502 files changed, 56610 insertions, 2446 deletions

diff --git a/CREDITS b/CREDITS
index 2358846f06be..b50db1767554 100644
--- a/CREDITS
+++ b/CREDITS
@@ -598,6 +598,11 @@ S: Tamsui town, Taipei county,
 S: Taiwan 251
 S: Republic of China
 
+N: Reinette Chatre
+E: reinette.chatre@intel.com
+D: WiMedia Link Protocol implementation
+D: UWB stack bits and pieces
+
 N: Michael Elizabeth Chastain
 E: mec@shout.net
 D: Configure, Menuconfig, xconfig
@@ -2695,6 +2700,12 @@ S: Demonstratsii 8-382
 S: Tula 300000
 S: Russia
 
+N: Inaky Perez-Gonzalez
+E: inaky.perez-gonzalez@intel.com
+D: UWB stack, HWA-RC driver and HWA-HC drivers
+D: Wireless USB additions to the USB stack
+D: WiMedia Link Protocol bits and pieces
+
 N: Gordon Peters
 E: GordPeters@smarttech.com
 D: Isochronous receive for IEEE 1394 driver (OHCI module).
diff --git a/Documentation/ABI/testing/sysfs-bus-umc b/Documentation/ABI/testing/sysfs-bus-umc
new file mode 100644
index 000000000000..948fec412446
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-umc
@@ -0,0 +1,28 @@
+What:           /sys/bus/umc/
+Date:           July 2008
+KernelVersion:  2.6.27
+Contact:        David Vrabel <david.vrabel@csr.com>
+Description:
+                The Wireless Host Controller Interface (WHCI)
+                specification describes a PCI-based device with
+                multiple capabilities; the UWB Multi-interface
+                Controller (UMC).
+
+                The umc bus presents each of the individual
+                capabilties as a device.
+
+What:           /sys/bus/umc/devices/.../capability_id
+Date:           July 2008
+KernelVersion:  2.6.27
+Contact:        David Vrabel <david.vrabel@csr.com>
+Description:
+                The ID of this capability, with 0 being the radio
+                controller capability.
+
+What:           /sys/bus/umc/devices/.../version
+Date:           July 2008
+KernelVersion:  2.6.27
+Contact:        David Vrabel <david.vrabel@csr.com>
+Description:
+                The specification version this capability's hardware
+                interface complies with.
diff --git a/Documentation/ABI/testing/sysfs-bus-usb b/Documentation/ABI/testing/sysfs-bus-usb
index df6c8a0159f1..7772928ee48f 100644
--- a/Documentation/ABI/testing/sysfs-bus-usb
+++ b/Documentation/ABI/testing/sysfs-bus-usb
@@ -101,3 +101,46 @@ Description:
 Users:
                 USB PM tool
                 git://git.moblin.org/users/sarah/usb-pm-tool/
+
+What:           /sys/bus/usb/device/.../authorized
+Date:           July 2008
+KernelVersion:  2.6.26
+Contact:        David Vrabel <david.vrabel@csr.com>
+Description:
+                Authorized devices are available for use by device
+                drivers, non-authorized one are not.  By default, wired
+                USB devices are authorized.
+
+                Certified Wireless USB devices are not authorized
+                initially and should be (by writing 1) after the
+                device has been authenticated.
+
+What:           /sys/bus/usb/device/.../wusb_cdid
+Date:           July 2008
+KernelVersion:  2.6.27
+Contact:        David Vrabel <david.vrabel@csr.com>
+Description:
+                For Certified Wireless USB devices only.
+
+                A devices's CDID, as 16 space-separated hex octets.
+
+What:           /sys/bus/usb/device/.../wusb_ck
+Date:           July 2008
+KernelVersion:  2.6.27
+Contact:        David Vrabel <david.vrabel@csr.com>
+Description:
+                For Certified Wireless USB devices only.
+
+                Write the device's connection key (CK) to start the
+                authentication of the device.  The CK is 16
+                space-separated hex octets.
+
+What:           /sys/bus/usb/device/.../wusb_disconnect
+Date:           July 2008
+KernelVersion:  2.6.27
+Contact:        David Vrabel <david.vrabel@csr.com>
+Description:
+                For Certified Wireless USB devices only.
+
+                Write a 1 to force the device to disconnect
+                (equivalent to unplugging a wired USB device).
diff --git a/Documentation/ABI/testing/sysfs-class-usb_host b/Documentation/ABI/testing/sysfs-class-usb_host
new file mode 100644
index 000000000000..46b66ad1f1b4
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-usb_host
@@ -0,0 +1,25 @@
+What:           /sys/class/usb_host/usb_hostN/wusb_chid
+Date:           July 2008
+KernelVersion:  2.6.27
+Contact:        David Vrabel <david.vrabel@csr.com>
+Description:
+                Write the CHID (16 space-separated hex octets) for this host controller.
+                This starts the host controller, allowing it to accept connection from
+                WUSB devices.
+
+                Set an all zero CHID to stop the host controller.
+
+What:           /sys/class/usb_host/usb_hostN/wusb_trust_timeout
+Date:           July 2008
+KernelVersion:  2.6.27
+Contact:        David Vrabel <david.vrabel@csr.com>
+Description:
+                Devices that haven't sent a WUSB packet to the host
+                within 'wusb_trust_timeout' ms are considered to have
+                disconnected and are removed.  The default value of
+                4000 ms is the value required by the WUSB
+                specification.
+
+                Since this relates to security (specifically, the
+                lifetime of PTKs and GTKs) it should not be changed
+                from the default.
diff --git a/Documentation/ABI/testing/sysfs-class-uwb_rc b/Documentation/ABI/testing/sysfs-class-uwb_rc
new file mode 100644
index 000000000000..a0d18dbeb7a9
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-uwb_rc
@@ -0,0 +1,144 @@
+What:           /sys/class/uwb_rc
+Date:           July 2008
+KernelVersion:  2.6.27
+Contact:        linux-usb@vger.kernel.org
+Description:
+                Interfaces for WiMedia Ultra Wideband Common Radio
+                Platform (UWB) radio controllers.
+
+                Familiarity with the ECMA-368 'High Rate Ultra
+                Wideband MAC and PHY Specification' is assumed.
+
+What:           /sys/class/uwb_rc/beacon_timeout_ms
+Date:           July 2008
+KernelVersion:  2.6.27
+Description:
+                If no beacons are received from a device for at least
+                this time, the device will be considered to have gone
+                and it will be removed.  The default is 3 superframes
+                (~197 ms) as required by the specification.
+
+What:           /sys/class/uwb_rc/uwbN/
+Date:           July 2008
+KernelVersion:  2.6.27
+Contact:        linux-usb@vger.kernel.org
+Description:
+                An individual UWB radio controller.
+
+What:           /sys/class/uwb_rc/uwbN/beacon
+Date:           July 2008
+KernelVersion:  2.6.27
+Contact:        linux-usb@vger.kernel.org
+Description:
+                Write:
+
+                <channel> [<bpst offset>]
+
+                to start beaconing on a specific channel, or stop
+                beaconing if <channel> is -1.  Valid channels depends
+                on the radio controller's supported band groups.
+
+                <bpst offset> may be used to try and join a specific
+                beacon group if more than one was found during a scan.
+
+What:           /sys/class/uwb_rc/uwbN/scan
+Date:           July 2008
+KernelVersion:  2.6.27
+Contact:        linux-usb@vger.kernel.org
+Description:
+                Write:
+
+                <channel> <type> [<bpst offset>]
+
+                to start (or stop) scanning on a channel.  <type> is one of:
+                    0 - scan
+                    1 - scan outside BP
+                    2 - scan while inactive
+                    3 - scanning disabled
+                    4 - scan (with start time of <bpst offset>)
+
+What:           /sys/class/uwb_rc/uwbN/mac_address
+Date:           July 2008
+KernelVersion:  2.6.27
+Contact:        linux-usb@vger.kernel.org
+Description:
+                The EUI-48, in colon-separated hex octets, for this
+                radio controller.  A write will change the radio
+                controller's EUI-48 but only do so while the device is
+                not beaconing or scanning.
+
+What:           /sys/class/uwb_rc/uwbN/wusbhc
+Date:           July 2008
+KernelVersion:  2.6.27
+Contact:        linux-usb@vger.kernel.org
+Description:
+                A symlink to the device (if any) of the WUSB Host
+                Controller PAL using this radio controller.
+
+What:           /sys/class/uwb_rc/uwbN/<EUI-48>/
+Date:           July 2008
+KernelVersion:  2.6.27
+Contact:        linux-usb@vger.kernel.org
+Description:
+                A neighbour UWB device that has either been detected
+                as part of a scan or is a member of the radio
+                controllers beacon group.
+
+What:           /sys/class/uwb_rc/uwbN/<EUI-48>/BPST
+Date:           July 2008
+KernelVersion:  2.6.27
+Contact:        linux-usb@vger.kernel.org
+Description:
+                The time (using the radio controllers internal 1 ms
+                interval superframe timer) of the last beacon from
+                this device was received.
+
+What:           /sys/class/uwb_rc/uwbN/<EUI-48>/DevAddr
+Date:           July 2008
+KernelVersion:  2.6.27
+Contact:        linux-usb@vger.kernel.org
+Description:
+                The current DevAddr of this device in colon separated
+                hex octets.
+
+What:           /sys/class/uwb_rc/uwbN/<EUI-48>/EUI_48
+Date:           July 2008
+KernelVersion:  2.6.27
+Contact:        linux-usb@vger.kernel.org
+Description:
+
+                The EUI-48 of this device in colon separated hex
+                octets.
+
+What:           /sys/class/uwb_rc/uwbN/<EUI-48>/BPST
+Date:           July 2008
+KernelVersion:  2.6.27
+Contact:        linux-usb@vger.kernel.org
+Description:
+
+What:           /sys/class/uwb_rc/uwbN/<EUI-48>/IEs
+Date:           July 2008
+KernelVersion:  2.6.27
+Contact:        linux-usb@vger.kernel.org
+Description:
+                The latest IEs included in this device's beacon, in
+                space separated hex octets with one IE per line.
+
+What:           /sys/class/uwb_rc/uwbN/<EUI-48>/LQE
+Date:           July 2008
+KernelVersion:  2.6.27
+Contact:        linux-usb@vger.kernel.org
+Description:
+                Link Quality Estimate - the Signal to Noise Ratio
+                (SNR) of all packets received from this device in dB.
+                This gives an estimate on a suitable PHY rate. Refer
+                to [ECMA-368] section 13.3 for more details.
+
+What:           /sys/class/uwb_rc/uwbN/<EUI-48>/RSSI
+Date:           July 2008
+KernelVersion:  2.6.27
+Contact:        linux-usb@vger.kernel.org
+Description:
+                Received Signal Strength Indication - the strength of
+                the received signal in dB.  LQE is a more useful
+                measure of the radio link quality.
diff --git a/Documentation/ABI/testing/sysfs-wusb_cbaf b/Documentation/ABI/testing/sysfs-wusb_cbaf
new file mode 100644
index 000000000000..a99c5f86a37a
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-wusb_cbaf
@@ -0,0 +1,100 @@
+What:           /sys/bus/usb/drivers/wusb_cbaf/.../wusb_*
+Date:           August 2008
+KernelVersion:  2.6.27
+Contact:        David Vrabel <david.vrabel@csr.com>
+Description:
+                Various files for managing Cable Based Association of
+                (wireless) USB devices.
+
+                The sequence of operations should be:
+
+                1. Device is plugged in.
+
+                2. The connection manager (CM) sees a device with CBA capability.
+                   (the wusb_chid etc. files in /sys/devices/blah/OURDEVICE).
+
+                3. The CM writes the host name, supported band groups,
+                   and the CHID (host ID) into the wusb_host_name,
+                   wusb_host_band_groups and wusb_chid files. These
+                   get sent to the device and the CDID (if any) for
+                   this host is requested.
+
+                4. The CM can verify that the device's supported band
+                   groups (wusb_device_band_groups) are compatible
+                   with the host.
+
+                5. The CM reads the wusb_cdid file.
+
+                6. The CM looks it up its database.
+
+                   - If it has a matching CHID,CDID entry, the device
+                     has been authorized before and nothing further
+                     needs to be done.
+
+                   - If the CDID is zero (or the CM doesn't find a
+                     matching CDID in its database), the device is
+                     assumed to be not known.  The CM may associate
+                     the host with device by: writing a randomly
+                     generated CDID to wusb_cdid and then a random CK
+                     to wusb_ck (this uploads the new CC to the
+                     device).
+
+                     CMD may choose to prompt the user before
+                     associating with a new device.
+
+                7. Device is unplugged.
+
+                References:
+                  [WUSB-AM] Association Models Supplement to the
+                            Certified Wireless Universal Serial Bus
+                            Specification, version 1.0.
+
+What:           /sys/bus/usb/drivers/wusb_cbaf/.../wusb_chid
+Date:           August 2008
+KernelVersion:  2.6.27
+Contact:        David Vrabel <david.vrabel@csr.com>
+Description:
+                The CHID of the host formatted as 16 space-separated
+                hex octets.
+
+                Writes fetches device's supported band groups and the
+                the CDID for any existing association with this host.
+
+What:           /sys/bus/usb/drivers/wusb_cbaf/.../wusb_host_name
+Date:           August 2008
+KernelVersion:  2.6.27
+Contact:        David Vrabel <david.vrabel@csr.com>
+Description:
+                A friendly name for the host as a UTF-8 encoded string.
+
+What:           /sys/bus/usb/drivers/wusb_cbaf/.../wusb_host_band_groups
+Date:           August 2008
+KernelVersion:  2.6.27
+Contact:        David Vrabel <david.vrabel@csr.com>
+Description:
+                The band groups supported by the host, in the format
+                defined in [WUSB-AM].
+
+What:           /sys/bus/usb/drivers/wusb_cbaf/.../wusb_device_band_groups
+Date:           August 2008
+KernelVersion:  2.6.27
+Contact:        David Vrabel <david.vrabel@csr.com>
+Description:
+                The band groups supported by the device, in the format
+                defined in [WUSB-AM].
+
+What:           /sys/bus/usb/drivers/wusb_cbaf/.../wusb_cdid
+Date:           August 2008
+KernelVersion:  2.6.27
+Contact:        David Vrabel <david.vrabel@csr.com>
+Description:
+                The device's CDID formatted as 16 space-separated hex
+                octets.
+
+What:           /sys/bus/usb/drivers/wusb_cbaf/.../wusb_ck
+Date:           August 2008
+KernelVersion:  2.6.27
+Contact:        David Vrabel <david.vrabel@csr.com>
+Description:
+                Write 16 space-separated random, hex octets to
+                associate with the device.
diff --git a/Documentation/ia64/xen.txt b/Documentation/ia64/xen.txt
new file mode 100644
index 000000000000..c61a99f7c8bb
--- /dev/null
+++ b/Documentation/ia64/xen.txt
@@ -0,0 +1,183 @@
+       Recipe for getting/building/running Xen/ia64 with pv_ops
+       --------------------------------------------------------
+
+This recipe describes how to get xen-ia64 source and build it,
+and run domU with pv_ops.
+
+============
+Requirements
+============
+
+  - python
+  - mercurial
+    it (aka "hg") is an open-source source code
+    management software. See the below.
+    http://www.selenic.com/mercurial/wiki/
+  - git
+  - bridge-utils
+
+=================================
+Getting and Building Xen and Dom0
+=================================
+
+  My environment is;
+    Machine  : Tiger4
+    Domain0 OS  : RHEL5
+    DomainU OS  : RHEL5
+
+ 1. Download source
+    # hg clone http://xenbits.xensource.com/ext/ia64/xen-unstable.hg
+    # cd xen-unstable.hg
+    # hg clone http://xenbits.xensource.com/ext/ia64/linux-2.6.18-xen.hg
+
+ 2. # make world
+
+ 3. # make install-tools
+
+ 4. copy kernels and xen
+    # cp xen/xen.gz /boot/efi/efi/redhat/
+    # cp build-linux-2.6.18-xen_ia64/vmlinux.gz \
+      /boot/efi/efi/redhat/vmlinuz-2.6.18.8-xen
+
+ 5. make initrd for Dom0/DomU
+    # make -C linux-2.6.18-xen.hg ARCH=ia64 modules_install \
+      O=$(/bin/pwd)/build-linux-2.6.18-xen_ia64
+    # mkinitrd -f /boot/efi/efi/redhat/initrd-2.6.18.8-xen.img \
+      2.6.18.8-xen --builtin mptspi --builtin mptbase \
+      --builtin mptscsih --builtin uhci-hcd --builtin ohci-hcd \
+      --builtin ehci-hcd
+
+================================
+Making a disk image for guest OS
+================================
+
+ 1. make file
+    # dd if=/dev/zero of=/root/rhel5.img bs=1M seek=4096 count=0
+    # mke2fs -F -j /root/rhel5.img
+    # mount -o loop /root/rhel5.img /mnt
+    # cp -ax /{dev,var,etc,usr,bin,sbin,lib} /mnt
+    # mkdir /mnt/{root,proc,sys,home,tmp}
+
+    Note: You may miss some device files. If so, please create them
+    with mknod. Or you can use tar instead of cp.
+
+ 2. modify DomU's fstab
+    # vi /mnt/etc/fstab
+       /dev/xvda1  /            ext3    defaults        1 1
+       none        /dev/pts     devpts  gid=5,mode=620  0 0
+       none        /dev/shm     tmpfs   defaults        0 0
+       none        /proc        proc    defaults        0 0
+       none        /sys         sysfs   defaults        0 0
+
+ 3. modify inittab
+    set runlevel to 3 to avoid X trying to start
+    # vi /mnt/etc/inittab
+       id:3:initdefault:
+    Start a getty on the hvc0 console
+       X0:2345:respawn:/sbin/mingetty hvc0
+    tty1-6 mingetty can be commented out
+
+ 4. add hvc0 into /etc/securetty
+    # vi /mnt/etc/securetty (add hvc0)
+
+ 5. umount
+    # umount /mnt
+
+FYI, virt-manager can also make a disk image for guest OS.
+It's GUI tools and easy to make it.
+
+==================
+Boot Xen & Domain0
+==================
+
+ 1. replace elilo
+    elilo of RHEL5 can boot Xen and Dom0.
+    If you use old elilo (e.g RHEL4), please download from the below
+    http://elilo.sourceforge.net/cgi-bin/blosxom
+    and copy into /boot/efi/efi/redhat/
+    # cp elilo-3.6-ia64.efi /boot/efi/efi/redhat/elilo.efi
+
+ 2. modify elilo.conf (like the below)
+    # vi /boot/efi/efi/redhat/elilo.conf
+     prompt
+     timeout=20
+     default=xen
+     relocatable
+
+     image=vmlinuz-2.6.18.8-xen
+             label=xen
+             vmm=xen.gz
+             initrd=initrd-2.6.18.8-xen.img
+             read-only
+             append=" -- rhgb root=/dev/sda2"
+
+The append options before "--" are for xen hypervisor,
+the options after "--" are for dom0.
+
+FYI, your machine may need console options like
+"com1=19200,8n1 console=vga,com1". For example,
+append="com1=19200,8n1 console=vga,com1 -- rhgb console=tty0 \
+console=ttyS0 root=/dev/sda2"
+
+=====================================
+Getting and Building domU with pv_ops
+=====================================
+
+ 1. get pv_ops tree
+    # git clone http://people.valinux.co.jp/~yamahata/xen-ia64/linux-2.6-xen-ia64.git/
+
+ 2. git branch (if necessary)
+    # cd linux-2.6-xen-ia64/
+    # git checkout -b your_branch origin/xen-ia64-domu-minimal-2008may19
+    (Note: The current branch is xen-ia64-domu-minimal-2008may19.
+    But you would find the new branch. You can see with
+    "git branch -r" to get the branch lists.
+    http://people.valinux.co.jp/~yamahata/xen-ia64/for_eagl/linux-2.6-ia64-pv-ops.git/
+    is also available. The tree is based on
+    git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 test)
+
+
+ 3. copy .config for pv_ops of domU
+    # cp arch/ia64/configs/xen_domu_wip_defconfig .config
+
+ 4. make kernel with pv_ops
+    # make oldconfig
+    # make
+
+ 5. install the kernel and initrd
+    # cp vmlinux.gz /boot/efi/efi/redhat/vmlinuz-2.6-pv_ops-xenU
+    # make modules_install
+    # mkinitrd -f /boot/efi/efi/redhat/initrd-2.6-pv_ops-xenU.img \
+      2.6.26-rc3xen-ia64-08941-g1b12161 --builtin mptspi \
+      --builtin mptbase --builtin mptscsih --builtin uhci-hcd \
+      --builtin ohci-hcd --builtin ehci-hcd
+
+========================
+Boot DomainU with pv_ops
+========================
+
+ 1. make config of DomU
+   # vi /etc/xen/rhel5
+     kernel = "/boot/efi/efi/redhat/vmlinuz-2.6-pv_ops-xenU"
+     ramdisk = "/boot/efi/efi/redhat/initrd-2.6-pv_ops-xenU.img"
+     vcpus = 1
+     memory = 512
+     name = "rhel5"
+     disk = [ 'file:/root/rhel5.img,xvda1,w' ]
+     root = "/dev/xvda1 ro"
+     extra= "rhgb console=hvc0"
+
+ 2. After boot xen and dom0, start xend
+   # /etc/init.d/xend start
+   ( In the debugging case, # XEND_DEBUG=1 xend trace_start )
+
+ 3. start domU
+   # xm create -c rhel5
+
+=========
+Reference
+=========
+- Wiki of Xen/IA64 upstream merge
+  http://wiki.xensource.com/xenwiki/XenIA64/UpstreamMerge
+
+Written by Akio Takebe <takebe_akio@jp.fujitsu.com> on 28 May 2008
diff --git a/Documentation/kdump/kdump.txt b/Documentation/kdump/kdump.txt
index 0705040531a5..3f4bc840da8b 100644
--- a/Documentation/kdump/kdump.txt
+++ b/Documentation/kdump/kdump.txt
@@ -109,7 +109,8 @@ There are two possible methods of using Kdump.
 2) Or use the system kernel binary itself as dump-capture kernel and there is
    no need to build a separate dump-capture kernel. This is possible
    only with the architecutres which support a relocatable kernel. As
-   of today, i386, x86_64 and ia64 architectures support relocatable kernel.
+   of today, i386, x86_64, ppc64 and ia64 architectures support relocatable
+   kernel.
 
 Building a relocatable kernel is advantageous from the point of view that
 one does not have to build a second kernel for capturing the dump. But
@@ -207,8 +208,15 @@ Dump-capture kernel config options (Arch Dependent, i386 and x86_64)
 Dump-capture kernel config options (Arch Dependent, ppc64)
 ----------------------------------------------------------
 
-*  Make and install the kernel and its modules. DO NOT add this kernel
-   to the boot loader configuration files.
+1) Enable "Build a kdump crash kernel" support under "Kernel" options:
+
+   CONFIG_CRASH_DUMP=y
+
+2)   Enable "Build a relocatable kernel" support
+
+   CONFIG_RELOCATABLE=y
+
+   Make and install the kernel and its modules.
 
 Dump-capture kernel config options (Arch Dependent, ia64)
 ----------------------------------------------------------
diff --git a/Documentation/powerpc/booting-without-of.txt b/Documentation/powerpc/booting-without-of.txt
index de4063cb4fdc..02ea9a971b8e 100644
--- a/Documentation/powerpc/booting-without-of.txt
+++ b/Documentation/powerpc/booting-without-of.txt
@@ -1917,6 +1917,8 @@ platforms are moved over to use the flattened-device-tree model.
                         inverse clock polarity (CPOL) mode
     - spi-cpha        - (optional) Empty property indicating device requires
                         shifted clock phase (CPHA) mode
+    - spi-cs-high     - (optional) Empty property indicating device requires
+                        chip select active high
 
     SPI example for an MPC5200 SPI bus:
                 spi@f00 {
diff --git a/Documentation/powerpc/dts-bindings/fsl/board.txt b/Documentation/powerpc/dts-bindings/fsl/board.txt
index 74ae6f1cd2d6..81a917ef96e9 100644
--- a/Documentation/powerpc/dts-bindings/fsl/board.txt
+++ b/Documentation/powerpc/dts-bindings/fsl/board.txt
@@ -2,13 +2,13 @@
 
 Required properties:
 
- - device_type : Should be "board-control"
+ - compatible : Should be "fsl,<board>-bcsr"
  - reg : Offset and length of the register set for the device
 
 Example:
 
         bcsr@f8000000 {
-                device_type = "board-control";
+                compatible = "fsl,mpc8360mds-bcsr";
                 reg = <f8000000 8000>;
         };
 
diff --git a/Documentation/usb/WUSB-Design-overview.txt b/Documentation/usb/WUSB-Design-overview.txt
new file mode 100644
index 000000000000..4c3d62c7843a
--- /dev/null
+++ b/Documentation/usb/WUSB-Design-overview.txt
@@ -0,0 +1,448 @@
+
+Linux UWB + Wireless USB + WiNET
+
+   (C) 2005-2006 Intel Corporation
+   Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License version
+   2 as published by the Free Software Foundation.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301, USA.
+
+
+Please visit http://bughost.org/thewiki/Design-overview.txt-1.8 for
+updated content.
+
+    * Design-overview.txt-1.8
+
+This code implements a Ultra Wide Band stack for Linux, as well as
+drivers for the the USB based UWB radio controllers defined in the
+Wireless USB 1.0 specification (including Wireless USB host controller
+and an Intel WiNET controller).
+
+   1. Introduction
+         1. HWA: Host Wire adapters, your Wireless USB dongle
+
+         2. DWA: Device Wired Adaptor, a Wireless USB hub for wired
+            devices
+         3. WHCI: Wireless Host Controller Interface, the PCI WUSB host
+            adapter
+   2. The UWB stack
+         1. Devices and hosts: the basic structure
+
+         2. Host Controller life cycle
+
+         3. On the air: beacons and enumerating the radio neighborhood
+
+         4. Device lists
+         5. Bandwidth allocation
+
+   3. Wireless USB Host Controller drivers
+
+   4. Glossary
+
+
+    Introduction
+
+UWB is a wide-band communication protocol that is to serve also as the
+low-level protocol for others (much like TCP sits on IP). Currently
+these others are Wireless USB and TCP/IP, but seems Bluetooth and
+Firewire/1394 are coming along.
+
+UWB uses a band from roughly 3 to 10 GHz, transmitting at a max of
+~-41dB (or 0.074 uW/MHz--geography specific data is still being
+negotiated w/ regulators, so watch for changes). That band is divided in
+a bunch of ~1.5 GHz wide channels (or band groups) composed of three
+subbands/subchannels (528 MHz each). Each channel is independent of each
+other, so you could consider them different "busses". Initially this
+driver considers them all a single one.
+
+Radio time is divided in 65536 us long /superframes/, each one divided
+in 256 256us long /MASs/ (Media Allocation Slots), which are the basic
+time/media allocation units for transferring data. At the beginning of
+each superframe there is a Beacon Period (BP), where every device
+transmit its beacon on a single MAS. The length of the BP depends on how
+many devices are present and the length of their beacons.
+
+Devices have a MAC (fixed, 48 bit address) and a device (changeable, 16
+bit address) and send periodic beacons to advertise themselves and pass
+info on what they are and do. They advertise their capabilities and a
+bunch of other stuff.
+
+The different logical parts of this driver are:
+
+    *
+
+      *UWB*: the Ultra-Wide-Band stack -- manages the radio and
+      associated spectrum to allow for devices sharing it. Allows to
+      control bandwidth assingment, beaconing, scanning, etc
+
+    *
+
+      *WUSB*: the layer that sits on top of UWB to provide Wireless USB.
+      The Wireless USB spec defines means to control a UWB radio and to
+      do the actual WUSB.
+
+
+      HWA: Host Wire adapters, your Wireless USB dongle
+
+WUSB also defines a device called a Host Wire Adaptor (HWA), which in
+mere terms is a USB dongle that enables your PC to have UWB and Wireless
+USB. The Wireless USB Host Controller in a HWA looks to the host like a
+[Wireless] USB controller connected via USB (!)
+
+The HWA itself is broken in two or three main interfaces:
+
+    *
+
+      *RC*: Radio control -- this implements an interface to the
+      Ultra-Wide-Band radio controller. The driver for this implements a
+      USB-based UWB Radio Controller to the UWB stack.
+
+    *
+
+      *HC*: the wireless USB host controller. It looks like a USB host
+      whose root port is the radio and the WUSB devices connect to it.
+      To the system it looks like a separate USB host. The driver (will)
+      implement a USB host controller (similar to UHCI, OHCI or EHCI)
+      for which the root hub is the radio...To reiterate: it is a USB
+      controller that is connected via USB instead of PCI.
+
+    *
+
+      *WINET*: some HW provide a WiNET interface (IP over UWB). This
+      package provides a driver for it (it looks like a network
+      interface, winetX). The driver detects when there is a link up for
+      their type and kick into gear.
+
+
+      DWA: Device Wired Adaptor, a Wireless USB hub for wired devices
+
+These are the complement to HWAs. They are a USB host for connecting
+wired devices, but it is connected to your PC connected via Wireless
+USB. To the system it looks like yet another USB host. To the untrained
+eye, it looks like a hub that connects upstream wirelessly.
+
+We still offer no support for this; however, it should share a lot of
+code with the HWA-RC driver; there is a bunch of factorization work that
+has been done to support that in upcoming releases.
+
+
+      WHCI: Wireless Host Controller Interface, the PCI WUSB host adapter
+
+This is your usual PCI device that implements WHCI. Similar in concept
+to EHCI, it allows your wireless USB devices (including DWAs) to connect
+to your host via a PCI interface. As in the case of the HWA, it has a
+Radio Control interface and the WUSB Host Controller interface per se.
+
+There is still no driver support for this, but will be in upcoming
+releases.
+
+
+    The UWB stack
+
+The main mission of the UWB stack is to keep a tally of which devices
+are in radio proximity to allow drivers to connect to them. As well, it
+provides an API for controlling the local radio controllers (RCs from
+now on), such as to start/stop beaconing, scan, allocate bandwidth, etc.
+
+
+      Devices and hosts: the basic structure
+
+The main building block here is the UWB device (struct uwb_dev). For
+each device that pops up in radio presence (ie: the UWB host receives a
+beacon from it) you get a struct uwb_dev that will show up in
+/sys/class/uwb and in /sys/bus/uwb/devices.
+
+For each RC that is detected, a new struct uwb_rc is created. In turn, a
+RC is also a device, so they also show in /sys/class/uwb and
+/sys/bus/uwb/devices, but at the same time, only radio controllers show
+up in /sys/class/uwb_rc.
+
+    *
+
+      [*] The reason for RCs being also devices is that not only we can
+      see them while enumerating the system device tree, but also on the
+      radio (their beacons and stuff), so the handling has to be
+      likewise to that of a device.
+
+Each RC driver is implemented by a separate driver that plugs into the
+interface that the UWB stack provides through a struct uwb_rc_ops. The
+spec creators have been nice enough to make the message format the same
+for HWA and WHCI RCs, so the driver is really a very thin transport that
+moves the requests from the UWB API to the device [/uwb_rc_ops->cmd()/]
+and sends the replies and notifications back to the API
+[/uwb_rc_neh_grok()/]. Notifications are handled to the UWB daemon, that
+is chartered, among other things, to keep the tab of how the UWB radio
+neighborhood looks, creating and destroying devices as they show up or
+dissapear.
+
+Command execution is very simple: a command block is sent and a event
+block or reply is expected back. For sending/receiving command/events, a
+handle called /neh/ (Notification/Event Handle) is opened with
+/uwb_rc_neh_open()/.
+
+The HWA-RC (USB dongle) driver (drivers/uwb/hwa-rc.c) does this job for
+the USB connected HWA. Eventually, drivers/whci-rc.c will do the same
+for the PCI connected WHCI controller.
+
+
+      Host Controller life cycle
+
+So let's say we connect a dongle to the system: it is detected and
+firmware uploaded if needed [for Intel's i1480
+/drivers/uwb/ptc/usb.c:ptc_usb_probe()/] and then it is reenumerated.
+Now we have a real HWA device connected and
+/drivers/uwb/hwa-rc.c:hwarc_probe()/ picks it up, that will set up the
+Wire-Adaptor environment and then suck it into the UWB stack's vision of
+the world [/drivers/uwb/lc-rc.c:uwb_rc_add()/].
+
+    *
+
+      [*] The stack should put a new RC to scan for devices
+      [/uwb_rc_scan()/] so it finds what's available around and tries to
+      connect to them, but this is policy stuff and should be driven
+      from user space. As of now, the operator is expected to do it
+      manually; see the release notes for documentation on the procedure.
+
+When a dongle is disconnected, /drivers/uwb/hwa-rc.c:hwarc_disconnect()/
+takes time of tearing everything down safely (or not...).
+
+
+      On the air: beacons and enumerating the radio neighborhood
+
+So assuming we have devices and we have agreed for a channel to connect
+on (let's say 9), we put the new RC to beacon:
+
+    *
+
+            $ echo 9 0 > /sys/class/uwb_rc/uwb0/beacon
+
+Now it is visible. If there were other devices in the same radio channel
+and beacon group (that's what the zero is for), the dongle's radio
+control interface will send beacon notifications on its
+notification/event endpoint (NEEP). The beacon notifications are part of
+the event stream that is funneled into the API with
+/drivers/uwb/neh.c:uwb_rc_neh_grok()/ and delivered to the UWBD, the UWB
+daemon through a notification list.
+
+UWBD wakes up and scans the event list; finds a beacon and adds it to
+the BEACON CACHE (/uwb_beca/). If he receives a number of beacons from
+the same device, he considers it to be 'onair' and creates a new device
+[/drivers/uwb/lc-dev.c:uwbd_dev_onair()/]. Similarly, when no beacons
+are received in some time, the device is considered gone and wiped out
+[uwbd calls periodically /uwb/beacon.c:uwb_beca_purge()/ that will purge
+the beacon cache of dead devices].
+
+
+      Device lists
+
+All UWB devices are kept in the list of the struct bus_type uwb_bus.
+
+
+      Bandwidth allocation
+
+The UWB stack maintains a local copy of DRP availability through
+processing of incoming *DRP Availability Change* notifications. This
+local copy is currently used to present the current bandwidth
+availability to the user through the sysfs file
+/sys/class/uwb_rc/uwbx/bw_avail. In the future the bandwidth
+availability information will be used by the bandwidth reservation
+routines.
+
+The bandwidth reservation routines are in progress and are thus not
+present in the current release. When completed they will enable a user
+to initiate DRP reservation requests through interaction with sysfs. DRP
+reservation requests from remote UWB devices will also be handled. The
+bandwidth management done by the UWB stack will include callbacks to the
+higher layers will enable the higher layers to use the reservations upon
+completion. [Note: The bandwidth reservation work is in progress and
+subject to change.]
+
+
+    Wireless USB Host Controller drivers
+
+*WARNING* This section needs a lot of work!
+
+As explained above, there are three different types of HCs in the WUSB
+world: HWA-HC, DWA-HC and WHCI-HC.
+
+HWA-HC and DWA-HC share that they are Wire-Adapters (USB or WUSB
+connected controllers), and their transfer management system is almost
+identical. So is their notification delivery system.
+
+HWA-HC and WHCI-HC share that they are both WUSB host controllers, so
+they have to deal with WUSB device life cycle and maintenance, wireless
+root-hub
+
+HWA exposes a Host Controller interface (HWA-HC 0xe0/02/02). This has
+three endpoints (Notifications, Data Transfer In and Data Transfer
+Out--known as NEP, DTI and DTO in the code).
+
+We reserve UWB bandwidth for our Wireless USB Cluster, create a Cluster
+ID and tell the HC to use all that. Then we start it. This means the HC
+starts sending MMCs.
+
+    *
+
+      The MMCs are blocks of data defined somewhere in the WUSB1.0 spec
+      that define a stream in the UWB channel time allocated for sending
+      WUSB IEs (host to device commands/notifications) and Device
+      Notifications (device initiated to host). Each host defines a
+      unique Wireless USB cluster through MMCs. Devices can connect to a
+      single cluster at the time. The IEs are Information Elements, and
+      among them are the bandwidth allocations that tell each device
+      when can they transmit or receive.
+
+Now it all depends on external stimuli.
+
+*New device connection*
+
+A new device pops up, it scans the radio looking for MMCs that give out
+the existence of Wireless USB channels. Once one (or more) are found,
+selects which one to connect to. Sends a /DN_Connect/ (device
+notification connect) during the DNTS (Device Notification Time
+Slot--announced in the MMCs
+
+HC picks the /DN_Connect/ out (nep module sends to notif.c for delivery
+into /devconnect/). This process starts the authentication process for
+the device. First we allocate a /fake port/ and assign an
+unauthenticated address (128 to 255--what we really do is
+0x80 | fake_port_idx). We fiddle with the fake port status and /khubd/
+sees a new connection, so he moves on to enable the fake port with a reset.
+
+So now we are in the reset path -- we know we have a non-yet enumerated
+device with an unauthorized address; we ask user space to authenticate
+(FIXME: not yet done, similar to bluetooth pairing), then we do the key
+exchange (FIXME: not yet done) and issue a /set address 0/ to bring the
+device to the default state. Device is authenticated.
+
+From here, the USB stack takes control through the usb_hcd ops. khubd
+has seen the port status changes, as we have been toggling them. It will
+start enumerating and doing transfers through usb_hcd->urb_enqueue() to
+read descriptors and move our data.
+
+*Device life cycle and keep alives*
+
+Everytime there is a succesful transfer to/from a device, we update a
+per-device activity timestamp. If not, every now and then we check and
+if the activity timestamp gets old, we ping the device by sending it a
+Keep Alive IE; it responds with a /DN_Alive/ pong during the DNTS (this
+arrives to us as a notification through
+devconnect.c:wusb_handle_dn_alive(). If a device times out, we
+disconnect it from the system (cleaning up internal information and
+toggling the bits in the fake hub port, which kicks khubd into removing
+the rest of the stuff).
+
+This is done through devconnect:__wusb_check_devs(), which will scan the
+device list looking for whom needs refreshing.
+
+If the device wants to disconnect, it will either die (ugly) or send a
+/DN_Disconnect/ that will prompt a disconnection from the system.
+
+*Sending and receiving data*
+
+Data is sent and received through /Remote Pipes/ (rpipes). An rpipe is
+/aimed/ at an endpoint in a WUSB device. This is the same for HWAs and
+DWAs.
+
+Each HC has a number of rpipes and buffers that can be assigned to them;
+when doing a data transfer (xfer), first the rpipe has to be aimed and
+prepared (buffers assigned), then we can start queueing requests for
+data in or out.
+
+Data buffers have to be segmented out before sending--so we send first a
+header (segment request) and then if there is any data, a data buffer
+immediately after to the DTI interface (yep, even the request). If our
+buffer is bigger than the max segment size, then we just do multiple
+requests.
+
+[This sucks, because doing USB scatter gatter in Linux is resource
+intensive, if any...not that the current approach is not. It just has to
+be cleaned up a lot :)].
+
+If reading, we don't send data buffers, just the segment headers saying
+we want to read segments.
+
+When the xfer is executed, we receive a notification that says data is
+ready in the DTI endpoint (handled through
+xfer.c:wa_handle_notif_xfer()). In there we read from the DTI endpoint a
+descriptor that gives us the status of the transfer, its identification
+(given when we issued it) and the segment number. If it was a data read,
+we issue another URB to read into the destination buffer the chunk of
+data coming out of the remote endpoint. Done, wait for the next guy. The
+callbacks for the URBs issued from here are the ones that will declare
+the xfer complete at some point and call it's callback.
+
+Seems simple, but the implementation is not trivial.
+
+    *
+
+      *WARNING* Old!!
+
+The main xfer descriptor, wa_xfer (equivalent to a URB) contains an
+array of segments, tallys on segments and buffers and callback
+information. Buried in there is a lot of URBs for executing the segments
+and buffer transfers.
+
+For OUT xfers, there is an array of segments, one URB for each, another
+one of buffer URB. When submitting, we submit URBs for segment request
+1, buffer 1, segment 2, buffer 2...etc. Then we wait on the DTI for xfer
+result data; when all the segments are complete, we call the callback to
+finalize the transfer.
+
+For IN xfers, we only issue URBs for the segments we want to read and
+then wait for the xfer result data.
+
+*URB mapping into xfers*
+
+This is done by hwahc_op_urb_[en|de]queue(). In enqueue() we aim an
+rpipe to the endpoint where we have to transmit, create a transfer
+context (wa_xfer) and submit it. When the xfer is done, our callback is
+called and we assign the status bits and release the xfer resources.
+
+In dequeue() we are basically cancelling/aborting the transfer. We issue
+a xfer abort request to the HC, cancell all the URBs we had submitted
+and not yet done and when all that is done, the xfer callback will be
+called--this will call the URB callback.
+
+
+    Glossary
+
+*DWA* -- Device Wire Adapter
+
+USB host, wired for downstream devices, upstream connects wirelessly
+with Wireless USB.
+
+*EVENT* -- Response to a command on the NEEP
+
+*HWA* -- Host Wire Adapter / USB dongle for UWB and Wireless USB
+
+*NEH* -- Notification/Event Handle
+
+Handle/file descriptor for receiving notifications or events. The WA
+code requires you to get one of this to listen for notifications or
+events on the NEEP.
+
+*NEEP* -- Notification/Event EndPoint
+
+Stuff related to the management of the first endpoint of a HWA USB
+dongle that is used to deliver an stream of events and notifications to
+the host.
+
+*NOTIFICATION* -- Message coming in the NEEP as response to something.
+
+*RC* -- Radio Control
+
+Design-overview.txt-1.8 (last edited 2006-11-04 12:22:24 by
+InakyPerezGonzalez)
+
diff --git a/Documentation/usb/wusb-cbaf b/Documentation/usb/wusb-cbaf
new file mode 100644
index 000000000000..2e78b70f3adc
--- /dev/null
+++ b/Documentation/usb/wusb-cbaf
@@ -0,0 +1,139 @@
+#! /bin/bash
+#
+
+set -e
+
+progname=$(basename $0)
+function help
+{
+    cat <<EOF
+Usage: $progname COMMAND DEVICEs [ARGS]
+
+Command for manipulating the pairing/authentication credentials of a
+Wireless USB device that supports wired-mode Cable-Based-Association.
+
+Works in conjunction with the wusb-cba.ko driver from http://linuxuwb.org.
+
+
+DEVICE
+
+ sysfs path to the device to authenticate; for example, both this
+ guys are the same:
+
+ /sys/devices/pci0000:00/0000:00:1d.7/usb1/1-4/1-4.4/1-4.4:1.1
+ /sys/bus/usb/drivers/wusb-cbaf/1-4.4:1.1
+
+COMMAND/ARGS are
+
+ start
+
+   Start a WUSB host controller (by setting up a CHID)
+
+ set-chid DEVICE HOST-CHID HOST-BANDGROUP HOST-NAME
+
+   Sets host information in the device; after this you can call the
+   get-cdid to see how does this device report itself to us.
+
+ get-cdid DEVICE
+
+   Get the device ID associated to the HOST-CHDI we sent with
+   'set-chid'. We might not know about it.
+
+ set-cc DEVICE
+
+   If we allow the device to connect, set a random new CDID and CK
+   (connection key). Device saves them for the next time it wants to
+   connect wireless. We save them for that next time also so we can
+   authenticate the device (when we see the CDID he uses to id
+   itself) and the CK to crypto talk to it.
+
+CHID is always 16 hex bytes in 'XX YY ZZ...' form
+BANDGROUP is almost always 0001
+
+Examples:
+
+  You can default most arguments to '' to get a sane value:
+
+  $ $progname set-chid '' '' '' "My host name"
+
+  A full sequence:
+
+  $ $progname set-chid '' '' '' "My host name"
+  $ $progname get-cdid ''
+  $ $progname set-cc ''
+
+EOF
+}
+
+
+# Defaults
+# FIXME: CHID should come from a database :), band group from the host
+host_CHID="00 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff"
+host_band_group="0001"
+host_name=$(hostname)
+
+devs="$(echo /sys/bus/usb/drivers/wusb-cbaf/[0-9]*)"
+hdevs="$(for h in /sys/class/uwb_rc/*/wusbhc; do readlink -f $h; done)"
+
+result=0
+case $1 in
+    start)
+        for dev in ${2:-$hdevs}
+          do
+          uwb_rc=$(readlink -f $dev/uwb_rc)
+          if cat $uwb_rc/beacon | grep -q -- "-1"
+              then
+              echo 13 0 > $uwb_rc/beacon
+              echo I: started beaconing on ch 13 on $(basename $uwb_rc) >&2
+          fi
+          echo $host_CHID > $dev/wusb_chid
+          echo I: started host $(basename $dev) >&2
+        done
+        ;;
+    stop)
+        for dev in ${2:-$hdevs}
+          do
+          echo 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > $dev/wusb_chid
+          echo I: stopped host $(basename $dev) >&2
+          uwb_rc=$(readlink -f $dev/uwb_rc)
+          echo -1 | cat > $uwb_rc/beacon
+          echo I: stopped beaconing on $(basename $uwb_rc) >&2
+        done
+        ;;
+    set-chid)
+        shift
+        for dev in ${2:-$devs}; do
+            echo "${4:-$host_name}" > $dev/wusb_host_name
+            echo "${3:-$host_band_group}" > $dev/wusb_host_band_groups
+            echo ${2:-$host_CHID} > $dev/wusb_chid
+        done
+        ;;
+    get-cdid)
+        for dev in ${2:-$devs}
+          do
+          cat $dev/wusb_cdid
+        done
+        ;;
+    set-cc)
+        for dev in ${2:-$devs}; do
+            shift
+            CDID="$(head --bytes=16 /dev/urandom  | od -tx1 -An)"
+            CK="$(head --bytes=16 /dev/urandom  | od -tx1 -An)"
+            echo "$CDID" > $dev/wusb_cdid
+            echo "$CK" > $dev/wusb_ck
+
+            echo I: CC set >&2
+            echo "CHID: $(cat $dev/wusb_chid)"
+            echo "CDID:$CDID"
+            echo "CK:  $CK"
+        done
+        ;;
+    help|h|--help|-h)
+        help
+        ;;
+    *)
+        echo "E: Unknown usage" 1>&2
+        help 1>&2
+        result=1
+esac
+exit $result
diff --git a/MAINTAINERS b/MAINTAINERS
index 5c3f79c26384..cecf1592609e 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1053,6 +1053,12 @@ L:	cbe-oss-dev@ozlabs.org
 W:      http://www.ibm.com/developerworks/power/cell/
 S:      Supported
 
+CERTIFIED WIRELESS USB (WUSB) SUBSYSTEM:
+P:      David Vrabel
+M:      david.vrabel@csr.com
+L:      linux-usb@vger.kernel.org
+S:      Supported
+
 CFAG12864B LCD DRIVER
 P:      Miguel Ojeda Sandonis
 M:      miguel.ojeda.sandonis@gmail.com
@@ -2176,6 +2182,13 @@ M:	maciej.sosnowski@intel.com
 L:      linux-kernel@vger.kernel.org
 S:      Supported
 
+INTEL IOMMU (VT-d)
+P:      David Woodhouse
+M:      dwmw2@infradead.org
+L:      iommu@lists.linux-foundation.org
+T:      git://git.infradead.org/iommu-2.6.git
+S:      Supported
+
 INTEL IOP-ADMA DMA DRIVER
 P:      Dan Williams
 M:      dan.j.williams@intel.com
@@ -2928,9 +2941,9 @@ S:	Maintained
 
 NETEFFECT IWARP RNIC DRIVER (IW_NES)
 P:      Faisal Latif
-M:      flatif@neteffect.com
+M:      faisal.latif@intel.com
 P:      Chien Tung
-M:      ctung@neteffect.com
+M:      chien.tin.tung@intel.com
 L:      general@lists.openfabrics.org
 W:      http://www.neteffect.com
 S:      Supported
@@ -4191,6 +4204,12 @@ L:	sparclinux@vger.kernel.org
 T:      git kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6.git
 S:      Maintained
 
+ULTRA-WIDEBAND (UWB) SUBSYSTEM:
+P:      David Vrabel
+M:      david.vrabel@csr.com
+L:      linux-usb@vger.kernel.org
+S:      Supported
+
 UNIFORM CDROM DRIVER
 P:      Jens Axboe
 M:      axboe@kernel.dk
@@ -4616,6 +4635,11 @@ M:	zaga@fly.cc.fer.hr
 L:      linux-scsi@vger.kernel.org
 S:      Maintained
 
+WIMEDIA LLC PROTOCOL (WLP) SUBSYSTEM
+P:      David Vrabel
+M:      david.vrabel@csr.com
+S:      Maintained
+
 WISTRON LAPTOP BUTTON DRIVER
 P:      Miloslav Trmac
 M:      mitr@volny.cz
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index df39d20f7425..f504c801792f 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -356,7 +356,7 @@ config ARCH_IXP4XX
         select GENERIC_GPIO
         select GENERIC_TIME
         select GENERIC_CLOCKEVENTS
-        select ZONE_DMA if PCI
+        select DMABOUNCE if PCI
         help
           Support for Intel's IXP4XX (XScale) family of processors.
 
@@ -1256,6 +1256,8 @@ source "drivers/hid/Kconfig"
 
 source "drivers/usb/Kconfig"
 
+source "drivers/uwb/Kconfig"
+
 source "drivers/mmc/Kconfig"
 
 source "drivers/memstick/Kconfig"
diff --git a/arch/arm/common/Kconfig b/arch/arm/common/Kconfig
index 2e32acca02fb..86b5e6982660 100644
--- a/arch/arm/common/Kconfig
+++ b/arch/arm/common/Kconfig
@@ -13,10 +13,10 @@ config ICST307
 config SA1111
         bool
         select DMABOUNCE if !ARCH_PXA
-        select ZONE_DMA if !ARCH_PXA
 
 config DMABOUNCE
         bool
+        select ZONE_DMA
 
 config TIMER_ACORN
         bool
diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c
index fb86f248aab8..47ccec95f3e8 100644
--- a/arch/arm/common/sa1111.c
+++ b/arch/arm/common/sa1111.c
@@ -581,6 +581,7 @@ sa1111_init_one_child(struct sa1111 *sachip, struct resource *parent,
                 goto out;
         }
 
+#ifdef CONFIG_DMABOUNCE
         /*
          * If the parent device has a DMA mask associated with it,
          * propagate it down to the children.
@@ -598,6 +599,7 @@ sa1111_init_one_child(struct sa1111 *sachip, struct resource *parent,
                         }
                 }
         }
+#endif
 
 out:
         return ret;
@@ -937,7 +939,7 @@ static int sa1111_resume(struct platform_device *dev)
 #define sa1111_resume  NULL
 #endif
 
-static int sa1111_probe(struct platform_device *pdev)
+static int __devinit sa1111_probe(struct platform_device *pdev)
 {
         struct resource *mem;
         int irq;
diff --git a/arch/arm/configs/trizeps4_defconfig b/arch/arm/configs/trizeps4_defconfig
index 8b7a431a8bfc..9033d147f052 100644
--- a/arch/arm/configs/trizeps4_defconfig
+++ b/arch/arm/configs/trizeps4_defconfig
@@ -147,6 +147,7 @@ CONFIG_ARCH_PXA=y
 # CONFIG_MACH_MAINSTONE is not set
 # CONFIG_ARCH_PXA_IDP is not set
 # CONFIG_PXA_SHARPSL is not set
+CONFIG_TRIZEPS_PXA=y
 CONFIG_MACH_TRIZEPS4=y
 CONFIG_MACH_TRIZEPS4_CONXS=y
 # CONFIG_MACH_TRIZEPS4_ANY is not set
diff --git a/arch/arm/mach-clps711x/include/mach/memory.h b/arch/arm/mach-clps711x/include/mach/memory.h
index 71c2fa70c8e8..98ec30c97bbe 100644
--- a/arch/arm/mach-clps711x/include/mach/memory.h
+++ b/arch/arm/mach-clps711x/include/mach/memory.h
@@ -89,6 +89,8 @@
  *      node 3:  0xd8000000 - 0xdfffffff
  */
 #define NODE_MEM_SIZE_BITS      24
+#define SECTION_SIZE_BITS       24
+#define MAX_PHYSMEM_BITS        32
 
 #endif
 
diff --git a/arch/arm/mach-ixp4xx/Kconfig b/arch/arm/mach-ixp4xx/Kconfig
index db8b5fe06c0d..2c5a02b8520e 100644
--- a/arch/arm/mach-ixp4xx/Kconfig
+++ b/arch/arm/mach-ixp4xx/Kconfig
@@ -167,11 +167,6 @@ config MACH_GTWX5715
 
 comment "IXP4xx Options"
 
-config DMABOUNCE
-        bool
-        default y
-        depends on PCI
-
 config IXP4XX_INDIRECT_PCI
         bool "Use indirect PCI memory access"
         depends on PCI
diff --git a/arch/arm/mach-kirkwood/common.c b/arch/arm/mach-kirkwood/common.c
index 85cad05d8c5b..0bb1fbd84ccb 100644
--- a/arch/arm/mach-kirkwood/common.c
+++ b/arch/arm/mach-kirkwood/common.c
@@ -16,6 +16,7 @@
 #include <linux/mv643xx_eth.h>
 #include <linux/ata_platform.h>
 #include <linux/spi/orion_spi.h>
+#include <net/dsa.h>
 #include <asm/page.h>
 #include <asm/timex.h>
 #include <asm/mach/map.h>
@@ -152,6 +153,40 @@ void __init kirkwood_ge00_init(struct mv643xx_eth_platform_data *eth_data)
 
 
 /*****************************************************************************
+ * Ethernet switch
+ ****************************************************************************/
+static struct resource kirkwood_switch_resources[] = {
+        {
+                .start  = 0,
+                .end    = 0,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+static struct platform_device kirkwood_switch_device = {
+        .name           = "dsa",
+        .id             = 0,
+        .num_resources  = 0,
+        .resource       = kirkwood_switch_resources,
+};
+
+void __init kirkwood_ge00_switch_init(struct dsa_platform_data *d, int irq)
+{
+        if (irq != NO_IRQ) {
+                kirkwood_switch_resources[0].start = irq;
+                kirkwood_switch_resources[0].end = irq;
+                kirkwood_switch_device.num_resources = 1;
+        }
+
+        d->mii_bus = &kirkwood_ge00_shared.dev;
+        d->netdev = &kirkwood_ge00.dev;
+        kirkwood_switch_device.dev.platform_data = d;
+
+        platform_device_register(&kirkwood_switch_device);
+}
+
+
+/*****************************************************************************
  * SoC RTC
  ****************************************************************************/
 static struct resource kirkwood_rtc_resource = {
diff --git a/arch/arm/mach-kirkwood/common.h b/arch/arm/mach-kirkwood/common.h
index 8fa0f6a27635..5774632a67e3 100644
--- a/arch/arm/mach-kirkwood/common.h
+++ b/arch/arm/mach-kirkwood/common.h
@@ -11,6 +11,7 @@
 #ifndef __ARCH_KIRKWOOD_COMMON_H
 #define __ARCH_KIRKWOOD_COMMON_H
 
+struct dsa_platform_data;
 struct mv643xx_eth_platform_data;
 struct mv_sata_platform_data;
 
@@ -29,6 +30,7 @@ void kirkwood_pcie_id(u32 *dev, u32 *rev);
 
 void kirkwood_ehci_init(void);
 void kirkwood_ge00_init(struct mv643xx_eth_platform_data *eth_data);
+void kirkwood_ge00_switch_init(struct dsa_platform_data *d, int irq);
 void kirkwood_pcie_init(void);
 void kirkwood_rtc_init(void);
 void kirkwood_sata_init(struct mv_sata_platform_data *sata_data);
diff --git a/arch/arm/mach-kirkwood/rd88f6281-setup.c b/arch/arm/mach-kirkwood/rd88f6281-setup.c
index f785093e433f..175054abd630 100644
--- a/arch/arm/mach-kirkwood/rd88f6281-setup.c
+++ b/arch/arm/mach-kirkwood/rd88f6281-setup.c
@@ -19,6 +19,7 @@
 #include <linux/ata_platform.h>
 #include <linux/mv643xx_eth.h>
 #include <linux/ethtool.h>
+#include <net/dsa.h>
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/pci.h>
@@ -74,6 +75,15 @@ static struct mv643xx_eth_platform_data rd88f6281_ge00_data = {
         .duplex         = DUPLEX_FULL,
 };
 
+static struct dsa_platform_data rd88f6281_switch_data = {
+        .port_names[0]  = "lan1",
+        .port_names[1]  = "lan2",
+        .port_names[2]  = "lan3",
+        .port_names[3]  = "lan4",
+        .port_names[4]  = "wan",
+        .port_names[5]  = "cpu",
+};
+
 static struct mv_sata_platform_data rd88f6281_sata_data = {
         .n_ports        = 2,
 };
@@ -87,6 +97,7 @@ static void __init rd88f6281_init(void)
 
         kirkwood_ehci_init();
         kirkwood_ge00_init(&rd88f6281_ge00_data);
+        kirkwood_ge00_switch_init(&rd88f6281_switch_data, NO_IRQ);
         kirkwood_rtc_init();
         kirkwood_sata_init(&rd88f6281_sata_data);
         kirkwood_uart0_init();
diff --git a/arch/arm/mach-mv78xx0/db78x00-bp-setup.c b/arch/arm/mach-mv78xx0/db78x00-bp-setup.c
index 49f434c39eb7..2e285bbb7bbd 100644
--- a/arch/arm/mach-mv78xx0/db78x00-bp-setup.c
+++ b/arch/arm/mach-mv78xx0/db78x00-bp-setup.c
@@ -13,6 +13,7 @@
 #include <linux/platform_device.h>
 #include <linux/ata_platform.h>
 #include <linux/mv643xx_eth.h>
+#include <linux/ethtool.h>
 #include <mach/mv78xx0.h>
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -28,10 +29,14 @@ static struct mv643xx_eth_platform_data db78x00_ge01_data = {
 
 static struct mv643xx_eth_platform_data db78x00_ge10_data = {
         .phy_addr       = MV643XX_ETH_PHY_NONE,
+        .speed          = SPEED_1000,
+        .duplex         = DUPLEX_FULL,
 };
 
 static struct mv643xx_eth_platform_data db78x00_ge11_data = {
         .phy_addr       = MV643XX_ETH_PHY_NONE,
+        .speed          = SPEED_1000,
+        .duplex         = DUPLEX_FULL,
 };
 
 static struct mv_sata_platform_data db78x00_sata_data = {
diff --git a/arch/arm/mach-orion5x/common.c b/arch/arm/mach-orion5x/common.c
index 9625ef5975d0..437065c25c9c 100644
--- a/arch/arm/mach-orion5x/common.c
+++ b/arch/arm/mach-orion5x/common.c
@@ -19,6 +19,7 @@
 #include <linux/mv643xx_i2c.h>
 #include <linux/ata_platform.h>
 #include <linux/spi/orion_spi.h>
+#include <net/dsa.h>
 #include <asm/page.h>
 #include <asm/setup.h>
 #include <asm/timex.h>
@@ -198,6 +199,40 @@ void __init orion5x_eth_init(struct mv643xx_eth_platform_data *eth_data)
 
 
 /*****************************************************************************
+ * Ethernet switch
+ ****************************************************************************/
+static struct resource orion5x_switch_resources[] = {
+        {
+                .start  = 0,
+                .end    = 0,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+static struct platform_device orion5x_switch_device = {
+        .name           = "dsa",
+        .id             = 0,
+        .num_resources  = 0,
+        .resource       = orion5x_switch_resources,
+};
+
+void __init orion5x_eth_switch_init(struct dsa_platform_data *d, int irq)
+{
+        if (irq != NO_IRQ) {
+                orion5x_switch_resources[0].start = irq;
+                orion5x_switch_resources[0].end = irq;
+                orion5x_switch_device.num_resources = 1;
+        }
+
+        d->mii_bus = &orion5x_eth_shared.dev;
+        d->netdev = &orion5x_eth.dev;
+        orion5x_switch_device.dev.platform_data = d;
+
+        platform_device_register(&orion5x_switch_device);
+}
+
+
+/*****************************************************************************
  * I2C
  ****************************************************************************/
 static struct mv64xxx_i2c_pdata orion5x_i2c_pdata = {
@@ -275,7 +310,8 @@ void __init orion5x_sata_init(struct mv_sata_platform_data *sata_data)
  * SPI
  ****************************************************************************/
 static struct orion_spi_info orion5x_spi_plat_data = {
-        .tclk           = 0,
+        .tclk                   = 0,
+        .enable_clock_fix       = 1,
 };
 
 static struct resource orion5x_spi_resources[] = {
diff --git a/arch/arm/mach-orion5x/common.h b/arch/arm/mach-orion5x/common.h
index 1f8b2da676a5..a000c7c6ee96 100644
--- a/arch/arm/mach-orion5x/common.h
+++ b/arch/arm/mach-orion5x/common.h
@@ -1,6 +1,7 @@
 #ifndef __ARCH_ORION5X_COMMON_H
 #define __ARCH_ORION5X_COMMON_H
 
+struct dsa_platform_data;
 struct mv643xx_eth_platform_data;
 struct mv_sata_platform_data;
 
@@ -29,6 +30,7 @@ void orion5x_setup_pcie_wa_win(u32 base, u32 size);
 void orion5x_ehci0_init(void);
 void orion5x_ehci1_init(void);
 void orion5x_eth_init(struct mv643xx_eth_platform_data *eth_data);
+void orion5x_eth_switch_init(struct dsa_platform_data *d, int irq);
 void orion5x_i2c_init(void);
 void orion5x_sata_init(struct mv_sata_platform_data *sata_data);
 void orion5x_spi_init(void);
diff --git a/arch/arm/mach-orion5x/rd88f5181l-fxo-setup.c b/arch/arm/mach-orion5x/rd88f5181l-fxo-setup.c
index 500cdadaf09c..15f53235ee30 100644
--- a/arch/arm/mach-orion5x/rd88f5181l-fxo-setup.c
+++ b/arch/arm/mach-orion5x/rd88f5181l-fxo-setup.c
@@ -16,6 +16,7 @@
 #include <linux/mtd/physmap.h>
 #include <linux/mv643xx_eth.h>
 #include <linux/ethtool.h>
+#include <net/dsa.h>
 #include <asm/mach-types.h>
 #include <asm/gpio.h>
 #include <asm/leds.h>
@@ -93,6 +94,15 @@ static struct mv643xx_eth_platform_data rd88f5181l_fxo_eth_data = {
         .duplex         = DUPLEX_FULL,
 };
 
+static struct dsa_platform_data rd88f5181l_fxo_switch_data = {
+        .port_names[0]  = "lan2",
+        .port_names[1]  = "lan1",
+        .port_names[2]  = "wan",
+        .port_names[3]  = "cpu",
+        .port_names[5]  = "lan4",
+        .port_names[7]  = "lan3",
+};
+
 static void __init rd88f5181l_fxo_init(void)
 {
         /*
@@ -107,6 +117,7 @@ static void __init rd88f5181l_fxo_init(void)
          */
         orion5x_ehci0_init();
         orion5x_eth_init(&rd88f5181l_fxo_eth_data);
+        orion5x_eth_switch_init(&rd88f5181l_fxo_switch_data, NO_IRQ);
         orion5x_uart0_init();
 
         orion5x_setup_dev_boot_win(RD88F5181L_FXO_NOR_BOOT_BASE,
diff --git a/arch/arm/mach-orion5x/rd88f5181l-ge-setup.c b/arch/arm/mach-orion5x/rd88f5181l-ge-setup.c
index ebde81416499..8ad3934399d4 100644
--- a/arch/arm/mach-orion5x/rd88f5181l-ge-setup.c
+++ b/arch/arm/mach-orion5x/rd88f5181l-ge-setup.c
@@ -17,6 +17,7 @@
 #include <linux/mv643xx_eth.h>
 #include <linux/ethtool.h>
 #include <linux/i2c.h>
+#include <net/dsa.h>
 #include <asm/mach-types.h>
 #include <asm/gpio.h>
 #include <asm/leds.h>
@@ -94,6 +95,15 @@ static struct mv643xx_eth_platform_data rd88f5181l_ge_eth_data = {
         .duplex         = DUPLEX_FULL,
 };
 
+static struct dsa_platform_data rd88f5181l_ge_switch_data = {
+        .port_names[0]  = "lan2",
+        .port_names[1]  = "lan1",
+        .port_names[2]  = "wan",
+        .port_names[3]  = "cpu",
+        .port_names[5]  = "lan4",
+        .port_names[7]  = "lan3",
+};
+
 static struct i2c_board_info __initdata rd88f5181l_ge_i2c_rtc = {
         I2C_BOARD_INFO("ds1338", 0x68),
 };
@@ -112,6 +122,7 @@ static void __init rd88f5181l_ge_init(void)
          */
         orion5x_ehci0_init();
         orion5x_eth_init(&rd88f5181l_ge_eth_data);
+        orion5x_eth_switch_init(&rd88f5181l_ge_switch_data, gpio_to_irq(8));
         orion5x_i2c_init();
         orion5x_uart0_init();
 
diff --git a/arch/arm/mach-orion5x/rd88f6183ap-ge-setup.c b/arch/arm/mach-orion5x/rd88f6183ap-ge-setup.c
index 40e049539091..262e25e4dace 100644
--- a/arch/arm/mach-orion5x/rd88f6183ap-ge-setup.c
+++ b/arch/arm/mach-orion5x/rd88f6183ap-ge-setup.c
@@ -19,6 +19,7 @@
 #include <linux/spi/orion_spi.h>
 #include <linux/spi/flash.h>
 #include <linux/ethtool.h>
+#include <net/dsa.h>
 #include <asm/mach-types.h>
 #include <asm/gpio.h>
 #include <asm/leds.h>
@@ -34,6 +35,15 @@ static struct mv643xx_eth_platform_data rd88f6183ap_ge_eth_data = {
         .duplex         = DUPLEX_FULL,
 };
 
+static struct dsa_platform_data rd88f6183ap_ge_switch_data = {
+        .port_names[0]  = "lan1",
+        .port_names[1]  = "lan2",
+        .port_names[2]  = "lan3",
+        .port_names[3]  = "lan4",
+        .port_names[4]  = "wan",
+        .port_names[5]  = "cpu",
+};
+
 static struct mtd_partition rd88f6183ap_ge_partitions[] = {
         {
                 .name   = "kernel",
@@ -79,6 +89,7 @@ static void __init rd88f6183ap_ge_init(void)
          */
         orion5x_ehci0_init();
         orion5x_eth_init(&rd88f6183ap_ge_eth_data);
+        orion5x_eth_switch_init(&rd88f6183ap_ge_switch_data, gpio_to_irq(3));
         spi_register_board_info(rd88f6183ap_ge_spi_slave_info,
                                 ARRAY_SIZE(rd88f6183ap_ge_spi_slave_info));
         orion5x_spi_init();
diff --git a/arch/arm/mach-orion5x/wrt350n-v2-setup.c b/arch/arm/mach-orion5x/wrt350n-v2-setup.c
index 9a4fd5256462..cc8f89200865 100644
--- a/arch/arm/mach-orion5x/wrt350n-v2-setup.c
+++ b/arch/arm/mach-orion5x/wrt350n-v2-setup.c
@@ -15,6 +15,7 @@
 #include <linux/mtd/physmap.h>
 #include <linux/mv643xx_eth.h>
 #include <linux/ethtool.h>
+#include <net/dsa.h>
 #include <asm/mach-types.h>
 #include <asm/gpio.h>
 #include <asm/mach/arch.h>
@@ -105,6 +106,15 @@ static struct mv643xx_eth_platform_data wrt350n_v2_eth_data = {
         .duplex         = DUPLEX_FULL,
 };
 
+static struct dsa_platform_data wrt350n_v2_switch_data = {
+        .port_names[0]  = "lan2",
+        .port_names[1]  = "lan1",
+        .port_names[2]  = "wan",
+        .port_names[3]  = "cpu",
+        .port_names[5]  = "lan3",
+        .port_names[7]  = "lan4",
+};
+
 static void __init wrt350n_v2_init(void)
 {
         /*
@@ -119,6 +129,7 @@ static void __init wrt350n_v2_init(void)
          */
         orion5x_ehci0_init();
         orion5x_eth_init(&wrt350n_v2_eth_data);
+        orion5x_eth_switch_init(&wrt350n_v2_switch_data, NO_IRQ);
         orion5x_uart0_init();
 
         orion5x_setup_dev_boot_win(WRT350N_V2_NOR_BOOT_BASE,
diff --git a/arch/arm/mach-pxa/Kconfig b/arch/arm/mach-pxa/Kconfig
index f27f6b3d6e6f..f781873431f3 100644
--- a/arch/arm/mach-pxa/Kconfig
+++ b/arch/arm/mach-pxa/Kconfig
@@ -257,7 +257,6 @@ config MACH_ARMCORE
         bool "CompuLab CM-X255/CM-X270 modules"
         select PXA27x
         select IWMMXT
-        select ZONE_DMA if PCI
         select PXA25x
         select PXA_SSP
 
diff --git a/arch/arm/mach-pxa/include/mach/irqs.h b/arch/arm/mach-pxa/include/mach/irqs.h
index 9c163e19ada9..32bb4a2eb7f1 100644
--- a/arch/arm/mach-pxa/include/mach/irqs.h
+++ b/arch/arm/mach-pxa/include/mach/irqs.h
@@ -9,7 +9,8 @@
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
-
+#ifndef __ASM_MACH_IRQS_H
+#define __ASM_MACH_IRQS_H
 
 #ifdef CONFIG_PXA_HAVE_ISA_IRQS
 #define PXA_ISA_IRQ(x)  (x)
@@ -264,3 +265,5 @@
 #endif
 
 #endif /* CONFIG_PCI_HOST_ITE8152 */
+
+#endif /* __ASM_MACH_IRQS_H */
diff --git a/arch/arm/mach-pxa/include/mach/spitz.h b/arch/arm/mach-pxa/include/mach/spitz.h
index 31ac26b55bc1..e8488dfb7e91 100644
--- a/arch/arm/mach-pxa/include/mach/spitz.h
+++ b/arch/arm/mach-pxa/include/mach/spitz.h
@@ -142,7 +142,7 @@
 
 #define SPITZ_SCP2_GPIO_BASE            (NR_BUILTIN_GPIO + 12)
 #define SPITZ_GPIO_IR_ON                (SPITZ_SCP2_GPIO_BASE + 0)
-#define SPITZ_GPIO_AKIN_PULLUP          (SPITZ_SCP2_GPIO_BASE + 1
+#define SPITZ_GPIO_AKIN_PULLUP          (SPITZ_SCP2_GPIO_BASE + 1)
 #define SPITZ_GPIO_RESERVED_1           (SPITZ_SCP2_GPIO_BASE + 2)
 #define SPITZ_GPIO_RESERVED_2           (SPITZ_SCP2_GPIO_BASE + 3)
 #define SPITZ_GPIO_RESERVED_3           (SPITZ_SCP2_GPIO_BASE + 4)
diff --git a/arch/arm/mach-pxa/pwm.c b/arch/arm/mach-pxa/pwm.c
index 316cd986da5c..74e2ead8cee8 100644
--- a/arch/arm/mach-pxa/pwm.c
+++ b/arch/arm/mach-pxa/pwm.c
@@ -60,7 +60,7 @@ int pwm_config(struct pwm_device *pwm, int duty_ns, int period_ns)
         do_div(c, 1000000000);
         period_cycles = c;
 
-        if (period_cycles < 0)
+        if (period_cycles < 1)
                 period_cycles = 1;
         prescale = (period_cycles - 1) / 1024;
         pv = period_cycles / (prescale + 1) - 1;
diff --git a/arch/arm/mach-pxa/trizeps4.c b/arch/arm/mach-pxa/trizeps4.c
index a13dbf3c2c05..a72e3add743c 100644
--- a/arch/arm/mach-pxa/trizeps4.c
+++ b/arch/arm/mach-pxa/trizeps4.c
@@ -399,7 +399,7 @@ static void trizeps4_irda_transceiver_mode(struct device *dev, int mode)
         /* Switch mode */
         if (mode & IR_SIRMODE)
                 trizeps_conxs_ircr &= ~ConXS_IRCR_MODE; /* Slow mode */
-        else if (mode & IR_FIRMODE) {
+        else if (mode & IR_FIRMODE)
                 trizeps_conxs_ircr |= ConXS_IRCR_MODE;  /* Fast mode */
 
         /* Switch power */
diff --git a/arch/arm/mach-s3c2443/clock.c b/arch/arm/mach-s3c2443/clock.c
index 2f60bf6b8d43..f854e7385e3c 100644
--- a/arch/arm/mach-s3c2443/clock.c
+++ b/arch/arm/mach-s3c2443/clock.c
@@ -1033,8 +1033,7 @@ void __init s3c2443_init_clocks(int xtal)
 
         fclk = pll / s3c2443_fclk_div(clkdiv0);
         hclk = s3c2443_prediv_getrate(&clk_prediv);
-        hclk = hclk / s3c2443_get_hdiv(clkdiv0);
-        hclk = hclk / ((clkdiv0 & S3C2443_CLKDIV0_HALF_HCLK) ? 2 : 1);
+        hclk /= s3c2443_get_hdiv(clkdiv0);
         pclk = hclk / ((clkdiv0 & S3C2443_CLKDIV0_HALF_PCLK) ? 2 : 1);
 
         s3c24xx_setup_clocks(xtal, fclk, hclk, pclk);
diff --git a/arch/arm/mm/cache-v4.S b/arch/arm/mm/cache-v4.S
index 33926c9fcda6..5786adf10040 100644
--- a/arch/arm/mm/cache-v4.S
+++ b/arch/arm/mm/cache-v4.S
@@ -29,7 +29,7 @@ ENTRY(v4_flush_user_cache_all)
  *      Clean and invalidate the entire cache.
  */
 ENTRY(v4_flush_kern_cache_all)
-#ifdef CPU_CP15
+#ifdef CONFIG_CPU_CP15
         mov     r0, #0
         mcr     p15, 0, r0, c7, c7, 0           @ flush ID cache
         mov     pc, lr
@@ -48,7 +48,7 @@ ENTRY(v4_flush_kern_cache_all)
  *      - flags - vma_area_struct flags describing address space
  */
 ENTRY(v4_flush_user_cache_range)
-#ifdef CPU_CP15
+#ifdef CONFIG_CPU_CP15
         mov     ip, #0
         mcreq   p15, 0, ip, c7, c7, 0           @ flush ID cache
         mov     pc, lr
@@ -116,7 +116,7 @@ ENTRY(v4_dma_inv_range)
  *      - end    - virtual end address
  */
 ENTRY(v4_dma_flush_range)
-#ifdef CPU_CP15
+#ifdef CONFIG_CPU_CP15
         mov     r0, #0
         mcr     p15, 0, r0, c7, c7, 0           @ flush ID cache
 #endif
diff --git a/arch/arm/plat-s3c24xx/pwm-clock.c b/arch/arm/plat-s3c24xx/pwm-clock.c
index b8e854f1b1d5..3fad68a1e6bc 100644
--- a/arch/arm/plat-s3c24xx/pwm-clock.c
+++ b/arch/arm/plat-s3c24xx/pwm-clock.c
@@ -315,7 +315,7 @@ static int clk_pwm_tin_set_parent(struct clk *clk, struct clk *parent)
         if (parent == s3c24xx_pwmclk_tclk(id))
                 bits = S3C2410_TCFG1_MUX_TCLK << shift;
         else if (parent == s3c24xx_pwmclk_tdiv(id))
-                bits = clk_pwm_tdiv_bits(to_tdiv(clk)) << shift;
+                bits = clk_pwm_tdiv_bits(to_tdiv(parent)) << shift;
         else
                 return -EINVAL;
 
diff --git a/arch/arm/plat-s3c24xx/pwm.c b/arch/arm/plat-s3c24xx/pwm.c
index feb770f2e84e..ec56b88866c4 100644
--- a/arch/arm/plat-s3c24xx/pwm.c
+++ b/arch/arm/plat-s3c24xx/pwm.c
@@ -56,7 +56,7 @@ static struct clk *clk_scaler[2];
                 }                                       \
         }
 
-#define DEFINE_TIMER(_tmr_no, _irq)                     \
+#define DEFINE_S3C_TIMER(_tmr_no, _irq)                 \
         .name           = "s3c24xx-pwm",                \
         .id             = _tmr_no,                      \
         .num_resources  = TIMER_RESOURCE_SIZE,          \
@@ -67,11 +67,11 @@ static struct clk *clk_scaler[2];
  */
 
 struct platform_device s3c_device_timer[] = {
-        [0] = { DEFINE_TIMER(0, IRQ_TIMER0) },
-        [1] = { DEFINE_TIMER(1, IRQ_TIMER1) },
-        [2] = { DEFINE_TIMER(2, IRQ_TIMER2) },
-        [3] = { DEFINE_TIMER(3, IRQ_TIMER3) },
-        [4] = { DEFINE_TIMER(4, IRQ_TIMER4) },
+        [0] = { DEFINE_S3C_TIMER(0, IRQ_TIMER0) },
+        [1] = { DEFINE_S3C_TIMER(1, IRQ_TIMER1) },
+        [2] = { DEFINE_S3C_TIMER(2, IRQ_TIMER2) },
+        [3] = { DEFINE_S3C_TIMER(3, IRQ_TIMER3) },
+        [4] = { DEFINE_S3C_TIMER(4, IRQ_TIMER4) },
 };
 
 static inline int pwm_is_tdiv(struct pwm_device *pwm)
diff --git a/arch/cris/Kconfig b/arch/cris/Kconfig
index 07335e719bf8..b17aeea8d620 100644
--- a/arch/cris/Kconfig
+++ b/arch/cris/Kconfig
@@ -679,6 +679,8 @@ source "fs/Kconfig"
 
 source "drivers/usb/Kconfig"
 
+source "drivers/uwb/Kconfig"
+
 source "arch/cris/Kconfig.debug"
 
 source "security/Kconfig"
diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig
index bd1995403c67..28f06fd9b7b7 100644
--- a/arch/h8300/Kconfig
+++ b/arch/h8300/Kconfig
@@ -216,6 +216,8 @@ source "drivers/hwmon/Kconfig"
 
 source "drivers/usb/Kconfig"
 
+source "drivers/uwb/Kconfig"
+
 endmenu
 
 source "fs/Kconfig"
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 912c57db2d21..27eec71429b0 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -23,6 +23,7 @@ config IA64
         select HAVE_KRETPROBES
         select HAVE_DMA_ATTRS
         select HAVE_KVM
+        select HAVE_ARCH_TRACEHOOK
         default y
         help
           The Itanium Processor Family is Intel's 64-bit successor to
@@ -110,6 +111,33 @@ config AUDIT_ARCH
         bool
         default y
 
+menuconfig PARAVIRT_GUEST
+        bool "Paravirtualized guest support"
+        help
+          Say Y here to get to see options related to running Linux under
+          various hypervisors.  This option alone does not add any kernel code.
+
+          If you say N, all options in this submenu will be skipped and disabled.
+
+if PARAVIRT_GUEST
+
+config PARAVIRT
+        bool "Enable paravirtualization code"
+        depends on PARAVIRT_GUEST
+        default y
+        bool
+        default y
+        help
+          This changes the kernel so it can modify itself when it is run
+          under a hypervisor, potentially improving performance significantly
+          over full virtualization.  However, when run without a hypervisor
+          the kernel is theoretically slower and slightly larger.
+
+
+source "arch/ia64/xen/Kconfig"
+
+endif
+
 choice
         prompt "System type"
         default IA64_GENERIC
@@ -119,6 +147,7 @@ config IA64_GENERIC
         select NUMA
         select ACPI_NUMA
         select SWIOTLB
+        select PCI_MSI
         help
           This selects the system type of your hardware.  A "generic" kernel
           will run on any supported IA-64 system.  However, if you configure
@@ -126,11 +155,13 @@ config IA64_GENERIC
 
           generic               For any supported IA-64 system
           DIG-compliant         For DIG ("Developer's Interface Guide") compliant systems
+          DIG+Intel+IOMMU       For DIG systems with Intel IOMMU
           HP-zx1/sx1000         For HP systems
           HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
           SGI-SN2               For SGI Altix systems
           SGI-UV                For SGI UV systems
           Ski-simulator         For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
+          Xen-domU              For xen domU system
 
           If you don't know what to do, choose "generic".
 
@@ -138,6 +169,11 @@ config IA64_DIG
         bool "DIG-compliant"
         select SWIOTLB
 
+config IA64_DIG_VTD
+        bool "DIG+Intel+IOMMU"
+        select DMAR
+        select PCI_MSI
+
 config IA64_HP_ZX1
         bool "HP-zx1/sx1000"
         help
@@ -181,6 +217,10 @@ config IA64_HP_SIM
         bool "Ski-simulator"
         select SWIOTLB
 
+config IA64_XEN_GUEST
+        bool "Xen guest"
+        depends on XEN
+
 endchoice
 
 choice
@@ -583,6 +623,16 @@ source "drivers/pci/hotplug/Kconfig"
 
 source "drivers/pcmcia/Kconfig"
 
+config DMAR
+        bool "Support for DMA Remapping Devices (EXPERIMENTAL)"
+        depends on IA64_GENERIC && ACPI && EXPERIMENTAL
+        help
+          DMA remapping (DMAR) devices support enables independent address
+          translations for Direct Memory Access (DMA) from devices.
+          These DMA remapping devices are reported via ACPI tables
+          and include PCI device scope covered by these DMA
+          remapping devices.
+
 endmenu
 
 endif
diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile
index 905d25b13d5a..58a7e46affda 100644
--- a/arch/ia64/Makefile
+++ b/arch/ia64/Makefile
@@ -53,12 +53,15 @@ libs-y				+= arch/ia64/lib/
 core-y                          += arch/ia64/kernel/ arch/ia64/mm/
 core-$(CONFIG_IA32_SUPPORT)     += arch/ia64/ia32/
 core-$(CONFIG_IA64_DIG)         += arch/ia64/dig/
+core-$(CONFIG_IA64_DIG_VTD)     += arch/ia64/dig/
 core-$(CONFIG_IA64_GENERIC)     += arch/ia64/dig/
 core-$(CONFIG_IA64_HP_ZX1)      += arch/ia64/dig/
 core-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += arch/ia64/dig/
+core-$(CONFIG_IA64_XEN_GUEST)   += arch/ia64/dig/
 core-$(CONFIG_IA64_SGI_SN2)     += arch/ia64/sn/
 core-$(CONFIG_IA64_SGI_UV)      += arch/ia64/uv/
 core-$(CONFIG_KVM)              += arch/ia64/kvm/
+core-$(CONFIG_XEN)              += arch/ia64/xen/
 
 drivers-$(CONFIG_PCI)           += arch/ia64/pci/
 drivers-$(CONFIG_IA64_HP_SIM)   += arch/ia64/hp/sim/
diff --git a/arch/ia64/configs/generic_defconfig b/arch/ia64/configs/generic_defconfig
index 9f483976228f..e05f9e1d3faa 100644
--- a/arch/ia64/configs/generic_defconfig
+++ b/arch/ia64/configs/generic_defconfig
@@ -233,6 +233,8 @@ CONFIG_DMIID=y
 CONFIG_BINFMT_ELF=y
 CONFIG_BINFMT_MISC=m
 
+# CONFIG_DMAR is not set
+
 #
 # Power management and ACPI
 #
diff --git a/arch/ia64/configs/tiger_defconfig b/arch/ia64/configs/tiger_defconfig
index 797acf9066c1..c522edf23c62 100644
--- a/arch/ia64/configs/tiger_defconfig
+++ b/arch/ia64/configs/tiger_defconfig
@@ -172,6 +172,8 @@ CONFIG_DMIID=y
 CONFIG_BINFMT_ELF=y
 CONFIG_BINFMT_MISC=m
 
+# CONFIG_DMAR is not set
+
 #
 # Power management and ACPI
 #
diff --git a/arch/ia64/dig/Makefile b/arch/ia64/dig/Makefile
index 971cd7870dd4..5c0283830bd6 100644
--- a/arch/ia64/dig/Makefile
+++ b/arch/ia64/dig/Makefile
@@ -6,4 +6,9 @@
 #
 
 obj-y := setup.o
+ifeq ($(CONFIG_DMAR), y)
+obj-$(CONFIG_IA64_GENERIC) += machvec.o machvec_vtd.o dig_vtd_iommu.o
+else
 obj-$(CONFIG_IA64_GENERIC) += machvec.o
+endif
+obj-$(CONFIG_IA64_DIG_VTD) += dig_vtd_iommu.o
diff --git a/arch/ia64/dig/dig_vtd_iommu.c b/arch/ia64/dig/dig_vtd_iommu.c
new file mode 100644
index 000000000000..1c8a079017a3
--- /dev/null
+++ b/arch/ia64/dig/dig_vtd_iommu.c
@@ -0,0 +1,59 @@
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/intel-iommu.h>
+
+void *
+vtd_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
+                 gfp_t flags)
+{
+        return intel_alloc_coherent(dev, size, dma_handle, flags);
+}
+EXPORT_SYMBOL_GPL(vtd_alloc_coherent);
+
+void
+vtd_free_coherent(struct device *dev, size_t size, void *vaddr,
+                 dma_addr_t dma_handle)
+{
+        intel_free_coherent(dev, size, vaddr, dma_handle);
+}
+EXPORT_SYMBOL_GPL(vtd_free_coherent);
+
+dma_addr_t
+vtd_map_single_attrs(struct device *dev, void *addr, size_t size,
+                     int dir, struct dma_attrs *attrs)
+{
+        return intel_map_single(dev, (phys_addr_t)addr, size, dir);
+}
+EXPORT_SYMBOL_GPL(vtd_map_single_attrs);
+
+void
+vtd_unmap_single_attrs(struct device *dev, dma_addr_t iova, size_t size,
+                       int dir, struct dma_attrs *attrs)
+{
+        intel_unmap_single(dev, iova, size, dir);
+}
+EXPORT_SYMBOL_GPL(vtd_unmap_single_attrs);
+
+int
+vtd_map_sg_attrs(struct device *dev, struct scatterlist *sglist, int nents,
+                 int dir, struct dma_attrs *attrs)
+{
+        return intel_map_sg(dev, sglist, nents, dir);
+}
+EXPORT_SYMBOL_GPL(vtd_map_sg_attrs);
+
+void
+vtd_unmap_sg_attrs(struct device *dev, struct scatterlist *sglist,
+                   int nents, int dir, struct dma_attrs *attrs)
+{
+        intel_unmap_sg(dev, sglist, nents, dir);
+}
+EXPORT_SYMBOL_GPL(vtd_unmap_sg_attrs);
+
+int
+vtd_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
+{
+        return 0;
+}
+EXPORT_SYMBOL_GPL(vtd_dma_mapping_error);
diff --git a/arch/ia64/dig/machvec_vtd.c b/arch/ia64/dig/machvec_vtd.c
new file mode 100644
index 000000000000..7cd3eb471cad
--- /dev/null
+++ b/arch/ia64/dig/machvec_vtd.c
@@ -0,0 +1,3 @@
+#define MACHVEC_PLATFORM_NAME           dig_vtd
+#define MACHVEC_PLATFORM_HEADER         <asm/machvec_dig_vtd.h>
+#include <asm/machvec_init.h>
diff --git a/arch/ia64/ia32/ia32_entry.S b/arch/ia64/ia32/ia32_entry.S
index 53505bb04771..a8cf19958850 100644
--- a/arch/ia64/ia32/ia32_entry.S
+++ b/arch/ia64/ia32/ia32_entry.S
@@ -108,6 +108,11 @@ GLOBAL_ENTRY(ia32_trace_syscall)
         ;;
         st8 [r2]=r3                             // initialize return code to -ENOSYS
         br.call.sptk.few rp=syscall_trace_enter // give parent a chance to catch syscall args
+        cmp.lt p6,p0=r8,r0                      // check tracehook
+        adds r2=IA64_PT_REGS_R8_OFFSET+16,sp    // r2 = &pt_regs.r8
+        ;;
+(p6)    st8.spill [r2]=r8                       // store return value in slot for r8
+(p6)    br.spnt.few .ret4
 .ret2:  // Need to reload arguments (they may be changed by the tracing process)
         adds r2=IA64_PT_REGS_R1_OFFSET+16,sp    // r2 = &pt_regs.r1
         adds r3=IA64_PT_REGS_R13_OFFSET+16,sp   // r3 = &pt_regs.r13
@@ -199,10 +204,10 @@ ia32_syscall_table:
         data8 sys_setuid        /* 16-bit version */
         data8 sys_getuid        /* 16-bit version */
         data8 compat_sys_stime    /* 25 */
-        data8 sys32_ptrace
+        data8 compat_sys_ptrace
         data8 sys32_alarm
         data8 sys_ni_syscall
-        data8 sys32_pause
+        data8 sys_pause
         data8 compat_sys_utime    /* 30 */
         data8 sys_ni_syscall      /* old stty syscall holder */
         data8 sys_ni_syscall      /* old gtty syscall holder */
@@ -215,7 +220,7 @@ ia32_syscall_table:
         data8 sys_mkdir
         data8 sys_rmdir           /* 40 */
         data8 sys_dup
-        data8 sys32_pipe
+        data8 sys_pipe
         data8 compat_sys_times
         data8 sys_ni_syscall      /* old prof syscall holder */
         data8 sys32_brk           /* 45 */
diff --git a/arch/ia64/ia32/sys_ia32.c b/arch/ia64/ia32/sys_ia32.c
index f4430bb4bbdc..5e92ae00bdbb 100644
--- a/arch/ia64/ia32/sys_ia32.c
+++ b/arch/ia64/ia32/sys_ia32.c
@@ -1098,21 +1098,6 @@ sys32_mremap (unsigned int addr, unsigned int old_len, unsigned int new_len,
         return ret;
 }
 
-asmlinkage long
-sys32_pipe (int __user *fd)
-{
-        int retval;
-        int fds[2];
-
-        retval = do_pipe_flags(fds, 0);
-        if (retval)
-                goto out;
-        if (copy_to_user(fd, fds, sizeof(fds)))
-                retval = -EFAULT;
-  out:
-        return retval;
-}
-
 asmlinkage unsigned long
 sys32_alarm (unsigned int seconds)
 {
@@ -1209,25 +1194,6 @@ sys32_waitpid (int pid, unsigned int *stat_addr, int options)
         return compat_sys_wait4(pid, stat_addr, options, NULL);
 }
 
-static unsigned int
-ia32_peek (struct task_struct *child, unsigned long addr, unsigned int *val)
-{
-        size_t copied;
-        unsigned int ret;
-
-        copied = access_process_vm(child, addr, val, sizeof(*val), 0);
-        return (copied != sizeof(ret)) ? -EIO : 0;
-}
-
-static unsigned int
-ia32_poke (struct task_struct *child, unsigned long addr, unsigned int val)
-{
-
-        if (access_process_vm(child, addr, &val, sizeof(val), 1) != sizeof(val))
-                return -EIO;
-        return 0;
-}
-
 /*
  *  The order in which registers are stored in the ptrace regs structure
  */
@@ -1525,49 +1491,15 @@ restore_ia32_fpxstate (struct task_struct *tsk, struct ia32_user_fxsr_struct __u
         return 0;
 }
 
-asmlinkage long
-sys32_ptrace (int request, pid_t pid, unsigned int addr, unsigned int data)
+long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
+        compat_ulong_t caddr, compat_ulong_t cdata)
 {
-        struct task_struct *child;
-        unsigned int value, tmp;
+        unsigned long addr = caddr;
+        unsigned long data = cdata;
+        unsigned int tmp;
         long i, ret;
 
-        lock_kernel();
-        if (request == PTRACE_TRACEME) {
-                ret = ptrace_traceme();
-                goto out;
-        }
-
-        child = ptrace_get_task_struct(pid);
-        if (IS_ERR(child)) {
-                ret = PTR_ERR(child);
-                goto out;
-        }
-
-        if (request == PTRACE_ATTACH) {
-                ret = sys_ptrace(request, pid, addr, data);
-                goto out_tsk;
-        }
-
-        ret = ptrace_check_attach(child, request == PTRACE_KILL);
-        if (ret < 0)
-                goto out_tsk;
-
         switch (request) {
-              case PTRACE_PEEKTEXT:
-              case PTRACE_PEEKDATA:     /* read word at location addr */
-                ret = ia32_peek(child, addr, &value);
-                if (ret == 0)
-                        ret = put_user(value, (unsigned int __user *) compat_ptr(data));
-                else
-                        ret = -EIO;
-                goto out_tsk;
-
-              case PTRACE_POKETEXT:
-              case PTRACE_POKEDATA:     /* write the word at location addr */
-                ret = ia32_poke(child, addr, data);
-                goto out_tsk;
-
               case PTRACE_PEEKUSR:      /* read word at addr in USER area */
                 ret = -EIO;
                 if ((addr & 3) || addr > 17*sizeof(int))
@@ -1632,27 +1564,9 @@ sys32_ptrace (int request, pid_t pid, unsigned int addr, unsigned int data)
                                             compat_ptr(data));
                 break;
 
-              case PTRACE_GETEVENTMSG:   
-                ret = put_user(child->ptrace_message, (unsigned int __user *) compat_ptr(data));
-                break;
-
-              case PTRACE_SYSCALL:      /* continue, stop after next syscall */
-              case PTRACE_CONT:         /* restart after signal. */
-              case PTRACE_KILL:
-              case PTRACE_SINGLESTEP:   /* execute chile for one instruction */
-              case PTRACE_DETACH:       /* detach a process */
-                ret = sys_ptrace(request, pid, addr, data);
-                break;
-
               default:
-                ret = ptrace_request(child, request, addr, data);
-                break;
-
+                return compat_ptrace_request(child, request, caddr, cdata);
         }
-  out_tsk:
-        put_task_struct(child);
-  out:
-        unlock_kernel();
         return ret;
 }
 
@@ -1704,14 +1618,6 @@ out:
 }
 
 asmlinkage int
-sys32_pause (void)
-{
-        current->state = TASK_INTERRUPTIBLE;
-        schedule();
-        return -ERESTARTNOHAND;
-}
-
-asmlinkage int
 sys32_msync (unsigned int start, unsigned int len, int flags)
 {
         unsigned int addr;
diff --git a/arch/ia64/include/asm/break.h b/arch/ia64/include/asm/break.h
index f03402039896..e90c40ec9edf 100644
--- a/arch/ia64/include/asm/break.h
+++ b/arch/ia64/include/asm/break.h
@@ -20,4 +20,13 @@
  */
 #define __IA64_BREAK_SYSCALL            0x100000
 
+/*
+ * Xen specific break numbers:
+ */
+#define __IA64_XEN_HYPERCALL            0x1000
+/* [__IA64_XEN_HYPERPRIVOP_START, __IA64_XEN_HYPERPRIVOP_MAX] is used
+   for xen hyperprivops */
+#define __IA64_XEN_HYPERPRIVOP_START    0x1
+#define __IA64_XEN_HYPERPRIVOP_MAX      0x1a
+
 #endif /* _ASM_IA64_BREAK_H */
diff --git a/arch/ia64/include/asm/cacheflush.h b/arch/ia64/include/asm/cacheflush.h
index afcfbda76e20..c8ce2719fee8 100644
--- a/arch/ia64/include/asm/cacheflush.h
+++ b/arch/ia64/include/asm/cacheflush.h
@@ -34,6 +34,8 @@ do {						\
 #define flush_dcache_mmap_unlock(mapping)       do { } while (0)
 
 extern void flush_icache_range (unsigned long start, unsigned long end);
+extern void clflush_cache_range(void *addr, int size);
+
 
 #define flush_icache_user_range(vma, page, user_addr, len)                                      \
 do {                                                                                            \
diff --git a/arch/ia64/include/asm/device.h b/arch/ia64/include/asm/device.h
index 3db6daf7f251..41ab85d66f33 100644
--- a/arch/ia64/include/asm/device.h
+++ b/arch/ia64/include/asm/device.h
@@ -10,6 +10,9 @@ struct dev_archdata {
 #ifdef CONFIG_ACPI
         void    *acpi_handle;
 #endif
+#ifdef CONFIG_DMAR
+        void *iommu; /* hook for IOMMU specific extension */
+#endif
 };
 
 #endif /* _ASM_IA64_DEVICE_H */
diff --git a/arch/ia64/include/asm/dma-mapping.h b/arch/ia64/include/asm/dma-mapping.h
index 06ff1ba21465..bbab7e2b0fc9 100644
--- a/arch/ia64/include/asm/dma-mapping.h
+++ b/arch/ia64/include/asm/dma-mapping.h
@@ -7,6 +7,49 @@
  */
 #include <asm/machvec.h>
 #include <linux/scatterlist.h>
+#include <asm/swiotlb.h>
+
+struct dma_mapping_ops {
+        int             (*mapping_error)(struct device *dev,
+                                         dma_addr_t dma_addr);
+        void*           (*alloc_coherent)(struct device *dev, size_t size,
+                                dma_addr_t *dma_handle, gfp_t gfp);
+        void            (*free_coherent)(struct device *dev, size_t size,
+                                void *vaddr, dma_addr_t dma_handle);
+        dma_addr_t      (*map_single)(struct device *hwdev, unsigned long ptr,
+                                size_t size, int direction);
+        void            (*unmap_single)(struct device *dev, dma_addr_t addr,
+                                size_t size, int direction);
+        void            (*sync_single_for_cpu)(struct device *hwdev,
+                                dma_addr_t dma_handle, size_t size,
+                                int direction);
+        void            (*sync_single_for_device)(struct device *hwdev,
+                                dma_addr_t dma_handle, size_t size,
+                                int direction);
+        void            (*sync_single_range_for_cpu)(struct device *hwdev,
+                                dma_addr_t dma_handle, unsigned long offset,
+                                size_t size, int direction);
+        void            (*sync_single_range_for_device)(struct device *hwdev,
+                                dma_addr_t dma_handle, unsigned long offset,
+                                size_t size, int direction);
+        void            (*sync_sg_for_cpu)(struct device *hwdev,
+                                struct scatterlist *sg, int nelems,
+                                int direction);
+        void            (*sync_sg_for_device)(struct device *hwdev,
+                                struct scatterlist *sg, int nelems,
+                                int direction);
+        int             (*map_sg)(struct device *hwdev, struct scatterlist *sg,
+                                int nents, int direction);
+        void            (*unmap_sg)(struct device *hwdev,
+                                struct scatterlist *sg, int nents,
+                                int direction);
+        int             (*dma_supported_op)(struct device *hwdev, u64 mask);
+        int             is_phys;
+};
+
+extern struct dma_mapping_ops *dma_ops;
+extern struct ia64_machine_vector ia64_mv;
+extern void set_iommu_machvec(void);
 
 #define dma_alloc_coherent(dev, size, handle, gfp)      \
         platform_dma_alloc_coherent(dev, size, handle, (gfp) | GFP_DMA)
@@ -96,4 +139,11 @@ dma_cache_sync (struct device *dev, void *vaddr, size_t size,
 
 #define dma_is_consistent(d, h) (1)     /* all we do is coherent memory... */
 
+static inline struct dma_mapping_ops *get_dma_ops(struct device *dev)
+{
+        return dma_ops;
+}
+
+
+
 #endif /* _ASM_IA64_DMA_MAPPING_H */
diff --git a/arch/ia64/include/asm/iommu.h b/arch/ia64/include/asm/iommu.h
new file mode 100644
index 000000000000..5fb2bb93de3b
--- /dev/null
+++ b/arch/ia64/include/asm/iommu.h
@@ -0,0 +1,16 @@
+#ifndef _ASM_IA64_IOMMU_H
+#define _ASM_IA64_IOMMU_H 1
+
+#define cpu_has_x2apic 0
+/* 10 seconds */
+#define DMAR_OPERATION_TIMEOUT (((cycles_t) local_cpu_data->itc_freq)*10)
+
+extern void pci_iommu_shutdown(void);
+extern void no_iommu_init(void);
+extern int force_iommu, no_iommu;
+extern int iommu_detected;
+extern void iommu_dma_init(void);
+extern void machvec_init(const char *name);
+extern int forbid_dac;
+
+#endif
diff --git a/arch/ia64/include/asm/kregs.h b/arch/ia64/include/asm/kregs.h
index aefcdfee7f23..39e65f6639f5 100644
--- a/arch/ia64/include/asm/kregs.h
+++ b/arch/ia64/include/asm/kregs.h
@@ -32,7 +32,7 @@
 #define IA64_TR_CURRENT_STACK   1       /* dtr1: maps kernel's memory- & register-stacks */
 
 #define IA64_TR_ALLOC_BASE      2       /* itr&dtr: Base of dynamic TR resource*/
-#define IA64_TR_ALLOC_MAX       32      /* Max number for dynamic use*/
+#define IA64_TR_ALLOC_MAX       64      /* Max number for dynamic use*/
 
 /* Processor status register bits: */
 #define IA64_PSR_BE_BIT         1
diff --git a/arch/ia64/include/asm/machvec.h b/arch/ia64/include/asm/machvec.h
index 2b850ccafef5..1ea28bcee33b 100644
--- a/arch/ia64/include/asm/machvec.h
+++ b/arch/ia64/include/asm/machvec.h
@@ -120,6 +120,8 @@ extern void machvec_tlb_migrate_finish (struct mm_struct *);
 #  include <asm/machvec_hpsim.h>
 # elif defined (CONFIG_IA64_DIG)
 #  include <asm/machvec_dig.h>
+# elif defined(CONFIG_IA64_DIG_VTD)
+#  include <asm/machvec_dig_vtd.h>
 # elif defined (CONFIG_IA64_HP_ZX1)
 #  include <asm/machvec_hpzx1.h>
 # elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB)
@@ -128,6 +130,8 @@ extern void machvec_tlb_migrate_finish (struct mm_struct *);
 #  include <asm/machvec_sn2.h>
 # elif defined (CONFIG_IA64_SGI_UV)
 #  include <asm/machvec_uv.h>
+# elif defined (CONFIG_IA64_XEN_GUEST)
+#  include <asm/machvec_xen.h>
 # elif defined (CONFIG_IA64_GENERIC)
 
 # ifdef MACHVEC_PLATFORM_HEADER
diff --git a/arch/ia64/include/asm/machvec_dig_vtd.h b/arch/ia64/include/asm/machvec_dig_vtd.h
new file mode 100644
index 000000000000..3400b561e711
--- /dev/null
+++ b/arch/ia64/include/asm/machvec_dig_vtd.h
@@ -0,0 +1,38 @@
+#ifndef _ASM_IA64_MACHVEC_DIG_VTD_h
+#define _ASM_IA64_MACHVEC_DIG_VTD_h
+
+extern ia64_mv_setup_t                  dig_setup;
+extern ia64_mv_dma_alloc_coherent       vtd_alloc_coherent;
+extern ia64_mv_dma_free_coherent        vtd_free_coherent;
+extern ia64_mv_dma_map_single_attrs     vtd_map_single_attrs;
+extern ia64_mv_dma_unmap_single_attrs   vtd_unmap_single_attrs;
+extern ia64_mv_dma_map_sg_attrs         vtd_map_sg_attrs;
+extern ia64_mv_dma_unmap_sg_attrs       vtd_unmap_sg_attrs;
+extern ia64_mv_dma_supported            iommu_dma_supported;
+extern ia64_mv_dma_mapping_error        vtd_dma_mapping_error;
+extern ia64_mv_dma_init                 pci_iommu_alloc;
+
+/*
+ * This stuff has dual use!
+ *
+ * For a generic kernel, the macros are used to initialize the
+ * platform's machvec structure.  When compiling a non-generic kernel,
+ * the macros are used directly.
+ */
+#define platform_name                           "dig_vtd"
+#define platform_setup                          dig_setup
+#define platform_dma_init                       pci_iommu_alloc
+#define platform_dma_alloc_coherent             vtd_alloc_coherent
+#define platform_dma_free_coherent              vtd_free_coherent
+#define platform_dma_map_single_attrs           vtd_map_single_attrs
+#define platform_dma_unmap_single_attrs         vtd_unmap_single_attrs
+#define platform_dma_map_sg_attrs               vtd_map_sg_attrs
+#define platform_dma_unmap_sg_attrs             vtd_unmap_sg_attrs
+#define platform_dma_sync_single_for_cpu        machvec_dma_sync_single
+#define platform_dma_sync_sg_for_cpu            machvec_dma_sync_sg
+#define platform_dma_sync_single_for_device     machvec_dma_sync_single
+#define platform_dma_sync_sg_for_device         machvec_dma_sync_sg
+#define platform_dma_supported                  iommu_dma_supported
+#define platform_dma_mapping_error              vtd_dma_mapping_error
+
+#endif /* _ASM_IA64_MACHVEC_DIG_VTD_h */
diff --git a/arch/ia64/include/asm/machvec_init.h b/arch/ia64/include/asm/machvec_init.h
index 7f21249fba3f..ef964b286842 100644
--- a/arch/ia64/include/asm/machvec_init.h
+++ b/arch/ia64/include/asm/machvec_init.h
@@ -1,3 +1,4 @@
+#include <asm/iommu.h>
 #include <asm/machvec.h>
 
 extern ia64_mv_send_ipi_t ia64_send_ipi;
diff --git a/arch/ia64/include/asm/machvec_xen.h b/arch/ia64/include/asm/machvec_xen.h
new file mode 100644
index 000000000000..55f9228056cd
--- /dev/null
+++ b/arch/ia64/include/asm/machvec_xen.h
@@ -0,0 +1,22 @@
+#ifndef _ASM_IA64_MACHVEC_XEN_h
+#define _ASM_IA64_MACHVEC_XEN_h
+
+extern ia64_mv_setup_t                  dig_setup;
+extern ia64_mv_cpu_init_t               xen_cpu_init;
+extern ia64_mv_irq_init_t               xen_irq_init;
+extern ia64_mv_send_ipi_t               xen_platform_send_ipi;
+
+/*
+ * This stuff has dual use!
+ *
+ * For a generic kernel, the macros are used to initialize the
+ * platform's machvec structure.  When compiling a non-generic kernel,
+ * the macros are used directly.
+ */
+#define platform_name                           "xen"
+#define platform_setup                          dig_setup
+#define platform_cpu_init                       xen_cpu_init
+#define platform_irq_init                       xen_irq_init
+#define platform_send_ipi                       xen_platform_send_ipi
+
+#endif /* _ASM_IA64_MACHVEC_XEN_h */
diff --git a/arch/ia64/include/asm/meminit.h b/arch/ia64/include/asm/meminit.h
index 7245a5781594..6bc96ee54327 100644
--- a/arch/ia64/include/asm/meminit.h
+++ b/arch/ia64/include/asm/meminit.h
@@ -18,10 +18,11 @@
  *      - crash dumping code reserved region
  *      - Kernel memory map built from EFI memory map
  *      - ELF core header
+ *      - xen start info if CONFIG_XEN
  *
  * More could be added if necessary
  */
-#define IA64_MAX_RSVD_REGIONS 8
+#define IA64_MAX_RSVD_REGIONS 9
 
 struct rsvd_region {
         unsigned long start;    /* virtual address of beginning of element */
diff --git a/arch/ia64/include/asm/native/inst.h b/arch/ia64/include/asm/native/inst.h
index c8efbf7b849e..0a1026cca4fa 100644
--- a/arch/ia64/include/asm/native/inst.h
+++ b/arch/ia64/include/asm/native/inst.h
@@ -36,8 +36,13 @@
         ;;                                      \
         movl clob = PARAVIRT_POISON;            \
         ;;
+# define CLOBBER_PRED(pred_clob)                \
+        ;;                                      \
+        cmp.eq pred_clob, p0 = r0, r0           \
+        ;;
 #else
-# define CLOBBER(clob)          /* nothing */
+# define CLOBBER(clob)                  /* nothing */
+# define CLOBBER_PRED(pred_clob)        /* nothing */
 #endif
 
 #define MOV_FROM_IFA(reg)       \
@@ -136,7 +141,8 @@
 
 #define SSM_PSR_I(pred, pred_clob, clob)        \
 (pred)  ssm psr.i                               \
-        CLOBBER(clob)
+        CLOBBER(clob)                           \
+        CLOBBER_PRED(pred_clob)
 
 #define RSM_PSR_I(pred, clob0, clob1)   \
 (pred)  rsm psr.i                       \
diff --git a/arch/ia64/include/asm/native/pvchk_inst.h b/arch/ia64/include/asm/native/pvchk_inst.h
new file mode 100644
index 000000000000..b8e6eb1090d7
--- /dev/null
+++ b/arch/ia64/include/asm/native/pvchk_inst.h
@@ -0,0 +1,263 @@
+#ifndef _ASM_NATIVE_PVCHK_INST_H
+#define _ASM_NATIVE_PVCHK_INST_H
+
+/******************************************************************************
+ * arch/ia64/include/asm/native/pvchk_inst.h
+ * Checker for paravirtualizations of privileged operations.
+ *
+ * Copyright (C) 2005 Hewlett-Packard Co
+ *      Dan Magenheimer <dan.magenheimer@hp.com>
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ *                    VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+/**********************************************
+ * Instructions paravirtualized for correctness
+ **********************************************/
+
+/* "fc" and "thash" are privilege-sensitive instructions, meaning they
+ *  may have different semantics depending on whether they are executed
+ *  at PL0 vs PL!=0.  When paravirtualized, these instructions mustn't
+ *  be allowed to execute directly, lest incorrect semantics result.
+ */
+
+#define fc      .error "fc should not be used directly."
+#define thash   .error "thash should not be used directly."
+
+/* Note that "ttag" and "cover" are also privilege-sensitive; "ttag"
+ * is not currently used (though it may be in a long-format VHPT system!)
+ * and the semantics of cover only change if psr.ic is off which is very
+ * rare (and currently non-existent outside of assembly code
+ */
+#define ttag    .error "ttag should not be used directly."
+#define cover   .error "cover should not be used directly."
+
+/* There are also privilege-sensitive registers.  These registers are
+ * readable at any privilege level but only writable at PL0.
+ */
+#define cpuid   .error "cpuid should not be used directly."
+#define pmd     .error "pmd should not be used directly."
+
+/*
+ * mov ar.eflag =
+ * mov = ar.eflag
+ */
+
+/**********************************************
+ * Instructions paravirtualized for performance
+ **********************************************/
+/*
+ * Those instructions include '.' which can't be handled by cpp.
+ * or can't be handled by cpp easily.
+ * They are handled by sed instead of cpp.
+ */
+
+/* for .S
+ * itc.i
+ * itc.d
+ *
+ * bsw.0
+ * bsw.1
+ *
+ * ssm psr.ic | PSR_DEFAULT_BITS
+ * ssm psr.ic
+ * rsm psr.ic
+ * ssm psr.i
+ * rsm psr.i
+ * rsm psr.i | psr.ic
+ * rsm psr.dt
+ * ssm psr.dt
+ *
+ * mov = cr.ifa
+ * mov = cr.itir
+ * mov = cr.isr
+ * mov = cr.iha
+ * mov = cr.ipsr
+ * mov = cr.iim
+ * mov = cr.iip
+ * mov = cr.ivr
+ * mov = psr
+ *
+ * mov cr.ifa =
+ * mov cr.itir =
+ * mov cr.iha =
+ * mov cr.ipsr =
+ * mov cr.ifs =
+ * mov cr.iip =
+ * mov cr.kr =
+ */
+
+/* for intrinsics
+ * ssm psr.i
+ * rsm psr.i
+ * mov = psr
+ * mov = ivr
+ * mov = tpr
+ * mov cr.itm =
+ * mov eoi =
+ * mov rr[] =
+ * mov = rr[]
+ * mov = kr
+ * mov kr =
+ * ptc.ga
+ */
+
+/*************************************************************
+ * define paravirtualized instrcution macros as nop to ingore.
+ * and check whether arguments are appropriate.
+ *************************************************************/
+
+/* check whether reg is a regular register */
+.macro is_rreg_in reg
+        .ifc "\reg", "r0"
+                nop 0
+                .exitm
+        .endif
+        ;;
+        mov \reg = r0
+        ;;
+.endm
+#define IS_RREG_IN(reg) is_rreg_in reg ;
+
+#define IS_RREG_OUT(reg)                        \
+        ;;                                      \
+        mov reg = r0                            \
+        ;;
+
+#define IS_RREG_CLOB(reg)       IS_RREG_OUT(reg)
+
+/* check whether pred is a predicate register */
+#define IS_PRED_IN(pred)                        \
+        ;;                                      \
+        (pred)  nop 0                           \
+        ;;
+
+#define IS_PRED_OUT(pred)                       \
+        ;;                                      \
+        cmp.eq pred, p0 = r0, r0                \
+        ;;
+
+#define IS_PRED_CLOB(pred)      IS_PRED_OUT(pred)
+
+
+#define DO_SAVE_MIN(__COVER, SAVE_IFS, EXTRA, WORKAROUND)       \
+        nop 0
+#define MOV_FROM_IFA(reg)                       \
+        IS_RREG_OUT(reg)
+#define MOV_FROM_ITIR(reg)                      \
+        IS_RREG_OUT(reg)
+#define MOV_FROM_ISR(reg)                       \
+        IS_RREG_OUT(reg)
+#define MOV_FROM_IHA(reg)                       \
+        IS_RREG_OUT(reg)
+#define MOV_FROM_IPSR(pred, reg)                \
+        IS_PRED_IN(pred)                        \
+        IS_RREG_OUT(reg)
+#define MOV_FROM_IIM(reg)                       \
+        IS_RREG_OUT(reg)
+#define MOV_FROM_IIP(reg)                       \
+        IS_RREG_OUT(reg)
+#define MOV_FROM_IVR(reg, clob)                 \
+        IS_RREG_OUT(reg)                        \
+        IS_RREG_CLOB(clob)
+#define MOV_FROM_PSR(pred, reg, clob)           \
+        IS_PRED_IN(pred)                        \
+        IS_RREG_OUT(reg)                        \
+        IS_RREG_CLOB(clob)
+#define MOV_TO_IFA(reg, clob)                   \
+        IS_RREG_IN(reg)                         \
+        IS_RREG_CLOB(clob)
+#define MOV_TO_ITIR(pred, reg, clob)            \
+        IS_PRED_IN(pred)                        \
+        IS_RREG_IN(reg)                         \
+        IS_RREG_CLOB(clob)
+#define MOV_TO_IHA(pred, reg, clob)             \
+        IS_PRED_IN(pred)                        \
+        IS_RREG_IN(reg)                         \
+        IS_RREG_CLOB(clob)
+#define MOV_TO_IPSR(pred, reg, clob)            \
+        IS_PRED_IN(pred)                        \
+        IS_RREG_IN(reg)                         \
+        IS_RREG_CLOB(clob)
+#define MOV_TO_IFS(pred, reg, clob)             \
+        IS_PRED_IN(pred)                        \
+        IS_RREG_IN(reg)                         \
+        IS_RREG_CLOB(clob)
+#define MOV_TO_IIP(reg, clob)                   \
+        IS_RREG_IN(reg)                         \
+        IS_RREG_CLOB(clob)
+#define MOV_TO_KR(kr, reg, clob0, clob1)        \
+        IS_RREG_IN(reg)                         \
+        IS_RREG_CLOB(clob0)                     \
+        IS_RREG_CLOB(clob1)
+#define ITC_I(pred, reg, clob)                  \
+        IS_PRED_IN(pred)                        \
+        IS_RREG_IN(reg)                         \
+        IS_RREG_CLOB(clob)
+#define ITC_D(pred, reg, clob)                  \
+        IS_PRED_IN(pred)                        \
+        IS_RREG_IN(reg)                         \
+        IS_RREG_CLOB(clob)
+#define ITC_I_AND_D(pred_i, pred_d, reg, clob)  \
+        IS_PRED_IN(pred_i)                      \
+        IS_PRED_IN(pred_d)                      \
+        IS_RREG_IN(reg)                         \
+        IS_RREG_CLOB(clob)
+#define THASH(pred, reg0, reg1, clob)           \
+        IS_PRED_IN(pred)                        \
+        IS_RREG_OUT(reg0)                       \
+        IS_RREG_IN(reg1)                        \
+        IS_RREG_CLOB(clob)
+#define SSM_PSR_IC_AND_DEFAULT_BITS_AND_SRLZ_I(clob0, clob1)    \
+        IS_RREG_CLOB(clob0)                                     \
+        IS_RREG_CLOB(clob1)
+#define SSM_PSR_IC_AND_SRLZ_D(clob0, clob1)     \
+        IS_RREG_CLOB(clob0)                     \
+        IS_RREG_CLOB(clob1)
+#define RSM_PSR_IC(clob)                        \
+        IS_RREG_CLOB(clob)
+#define SSM_PSR_I(pred, pred_clob, clob)        \
+        IS_PRED_IN(pred)                        \
+        IS_PRED_CLOB(pred_clob)                 \
+        IS_RREG_CLOB(clob)
+#define RSM_PSR_I(pred, clob0, clob1)           \
+        IS_PRED_IN(pred)                        \
+        IS_RREG_CLOB(clob0)                     \
+        IS_RREG_CLOB(clob1)
+#define RSM_PSR_I_IC(clob0, clob1, clob2)       \
+        IS_RREG_CLOB(clob0)                     \
+        IS_RREG_CLOB(clob1)                     \
+        IS_RREG_CLOB(clob2)
+#define RSM_PSR_DT                              \
+        nop 0
+#define SSM_PSR_DT_AND_SRLZ_I                   \
+        nop 0
+#define BSW_0(clob0, clob1, clob2)              \
+        IS_RREG_CLOB(clob0)                     \
+        IS_RREG_CLOB(clob1)                     \
+        IS_RREG_CLOB(clob2)
+#define BSW_1(clob0, clob1)                     \
+        IS_RREG_CLOB(clob0)                     \
+        IS_RREG_CLOB(clob1)
+#define COVER                                   \
+        nop 0
+#define RFI                                     \
+        br.ret.sptk.many rp /* defining nop causes dependency error */
+
+#endif /* _ASM_NATIVE_PVCHK_INST_H */
diff --git a/arch/ia64/include/asm/paravirt.h b/arch/ia64/include/asm/paravirt.h
index 660cab044834..2bf3636473fe 100644
--- a/arch/ia64/include/asm/paravirt.h
+++ b/arch/ia64/include/asm/paravirt.h
@@ -117,7 +117,7 @@ static inline void paravirt_post_smp_prepare_boot_cpu(void)
 struct pv_iosapic_ops {
         void (*pcat_compat_init)(void);
 
-        struct irq_chip *(*get_irq_chip)(unsigned long trigger);
+        struct irq_chip *(*__get_irq_chip)(unsigned long trigger);
 
         unsigned int (*__read)(char __iomem *iosapic, unsigned int reg);
         void (*__write)(char __iomem *iosapic, unsigned int reg, u32 val);
@@ -135,7 +135,7 @@ iosapic_pcat_compat_init(void)
 static inline struct irq_chip*
 iosapic_get_irq_chip(unsigned long trigger)
 {
-        return pv_iosapic_ops.get_irq_chip(trigger);
+        return pv_iosapic_ops.__get_irq_chip(trigger);
 }
 
 static inline unsigned int
diff --git a/arch/ia64/include/asm/pci.h b/arch/ia64/include/asm/pci.h
index ce342fb74246..1d660d89db0d 100644
--- a/arch/ia64/include/asm/pci.h
+++ b/arch/ia64/include/asm/pci.h
@@ -156,4 +156,7 @@ static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
         return channel ? isa_irq_to_vector(15) : isa_irq_to_vector(14);
 }
 
+#ifdef CONFIG_DMAR
+extern void pci_iommu_alloc(void);
+#endif
 #endif /* _ASM_IA64_PCI_H */
diff --git a/arch/ia64/include/asm/ptrace.h b/arch/ia64/include/asm/ptrace.h
index 15f8dcfe6eee..6417c1ecb44e 100644
--- a/arch/ia64/include/asm/ptrace.h
+++ b/arch/ia64/include/asm/ptrace.h
@@ -240,6 +240,12 @@ struct switch_stack {
  */
 # define instruction_pointer(regs) ((regs)->cr_iip + ia64_psr(regs)->ri)
 
+static inline unsigned long user_stack_pointer(struct pt_regs *regs)
+{
+        /* FIXME: should this be bspstore + nr_dirty regs? */
+        return regs->ar_bspstore;
+}
+
 #define regs_return_value(regs) ((regs)->r8)
 
 /* Conserve space in histogram by encoding slot bits in address
@@ -319,6 +325,8 @@ struct switch_stack {
   #define arch_has_block_step()   (1)
   extern void user_enable_block_step(struct task_struct *);
 
+#define __ARCH_WANT_COMPAT_SYS_PTRACE
+
 #endif /* !__KERNEL__ */
 
 /* pt_all_user_regs is used for PTRACE_GETREGS PTRACE_SETREGS */
diff --git a/arch/ia64/include/asm/pvclock-abi.h b/arch/ia64/include/asm/pvclock-abi.h
new file mode 100644
index 000000000000..44ef9ef8f5b3
--- /dev/null
+++ b/arch/ia64/include/asm/pvclock-abi.h
@@ -0,0 +1,48 @@
+/*
+ * same structure to x86's
+ * Hopefully asm-x86/pvclock-abi.h would be moved to somewhere more generic.
+ * For now, define same duplicated definitions.
+ */
+
+#ifndef _ASM_IA64__PVCLOCK_ABI_H
+#define _ASM_IA64__PVCLOCK_ABI_H
+#ifndef __ASSEMBLY__
+
+/*
+ * These structs MUST NOT be changed.
+ * They are the ABI between hypervisor and guest OS.
+ * Both Xen and KVM are using this.
+ *
+ * pvclock_vcpu_time_info holds the system time and the tsc timestamp
+ * of the last update. So the guest can use the tsc delta to get a
+ * more precise system time.  There is one per virtual cpu.
+ *
+ * pvclock_wall_clock references the point in time when the system
+ * time was zero (usually boot time), thus the guest calculates the
+ * current wall clock by adding the system time.
+ *
+ * Protocol for the "version" fields is: hypervisor raises it (making
+ * it uneven) before it starts updating the fields and raises it again
+ * (making it even) when it is done.  Thus the guest can make sure the
+ * time values it got are consistent by checking the version before
+ * and after reading them.
+ */
+
+struct pvclock_vcpu_time_info {
+        u32   version;
+        u32   pad0;
+        u64   tsc_timestamp;
+        u64   system_time;
+        u32   tsc_to_system_mul;
+        s8    tsc_shift;
+        u8    pad[3];
+} __attribute__((__packed__)); /* 32 bytes */
+
+struct pvclock_wall_clock {
+        u32   version;
+        u32   sec;
+        u32   nsec;
+} __attribute__((__packed__));
+
+#endif /* __ASSEMBLY__ */
+#endif /* _ASM_IA64__PVCLOCK_ABI_H */
diff --git a/arch/ia64/include/asm/swiotlb.h b/arch/ia64/include/asm/swiotlb.h
new file mode 100644
index 000000000000..fb79423834d0
--- /dev/null
+++ b/arch/ia64/include/asm/swiotlb.h
@@ -0,0 +1,56 @@
+#ifndef ASM_IA64__SWIOTLB_H
+#define ASM_IA64__SWIOTLB_H
+
+#include <linux/dma-mapping.h>
+
+/* SWIOTLB interface */
+
+extern dma_addr_t swiotlb_map_single(struct device *hwdev, void *ptr,
+                                     size_t size, int dir);
+extern void *swiotlb_alloc_coherent(struct device *hwdev, size_t size,
+                                    dma_addr_t *dma_handle, gfp_t flags);
+extern void swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr,
+                                 size_t size, int dir);
+extern void swiotlb_sync_single_for_cpu(struct device *hwdev,
+                                        dma_addr_t dev_addr,
+                                        size_t size, int dir);
+extern void swiotlb_sync_single_for_device(struct device *hwdev,
+                                           dma_addr_t dev_addr,
+                                           size_t size, int dir);
+extern void swiotlb_sync_single_range_for_cpu(struct device *hwdev,
+                                              dma_addr_t dev_addr,
+                                              unsigned long offset,
+                                              size_t size, int dir);
+extern void swiotlb_sync_single_range_for_device(struct device *hwdev,
+                                                 dma_addr_t dev_addr,
+                                                 unsigned long offset,
+                                                 size_t size, int dir);
+extern void swiotlb_sync_sg_for_cpu(struct device *hwdev,
+                                    struct scatterlist *sg, int nelems,
+                                    int dir);
+extern void swiotlb_sync_sg_for_device(struct device *hwdev,
+                                       struct scatterlist *sg, int nelems,
+                                       int dir);
+extern int swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg,
+                          int nents, int direction);
+extern void swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg,
+                             int nents, int direction);
+extern int swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr);
+extern void swiotlb_free_coherent(struct device *hwdev, size_t size,
+                                  void *vaddr, dma_addr_t dma_handle);
+extern int swiotlb_dma_supported(struct device *hwdev, u64 mask);
+extern void swiotlb_init(void);
+
+extern int swiotlb_force;
+
+#ifdef CONFIG_SWIOTLB
+extern int swiotlb;
+extern void pci_swiotlb_init(void);
+#else
+#define swiotlb 0
+static inline void pci_swiotlb_init(void)
+{
+}
+#endif
+
+#endif /* ASM_IA64__SWIOTLB_H */
diff --git a/arch/ia64/include/asm/sync_bitops.h b/arch/ia64/include/asm/sync_bitops.h
new file mode 100644
index 000000000000..593c12eeb270
--- /dev/null
+++ b/arch/ia64/include/asm/sync_bitops.h
@@ -0,0 +1,51 @@
+#ifndef _ASM_IA64_SYNC_BITOPS_H
+#define _ASM_IA64_SYNC_BITOPS_H
+
+/*
+ * Copyright (C) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ *
+ * Based on synch_bitops.h which Dan Magenhaimer wrote.
+ *
+ * bit operations which provide guaranteed strong synchronisation
+ * when communicating with Xen or other guest OSes running on other CPUs.
+ */
+
+static inline void sync_set_bit(int nr, volatile void *addr)
+{
+        set_bit(nr, addr);
+}
+
+static inline void sync_clear_bit(int nr, volatile void *addr)
+{
+        clear_bit(nr, addr);
+}
+
+static inline void sync_change_bit(int nr, volatile void *addr)
+{
+        change_bit(nr, addr);
+}
+
+static inline int sync_test_and_set_bit(int nr, volatile void *addr)
+{
+        return test_and_set_bit(nr, addr);
+}
+
+static inline int sync_test_and_clear_bit(int nr, volatile void *addr)
+{
+        return test_and_clear_bit(nr, addr);
+}
+
+static inline int sync_test_and_change_bit(int nr, volatile void *addr)
+{
+        return test_and_change_bit(nr, addr);
+}
+
+static inline int sync_test_bit(int nr, const volatile void *addr)
+{
+        return test_bit(nr, addr);
+}
+
+#define sync_cmpxchg(ptr, old, new)                             \
+        ((__typeof__(*(ptr)))cmpxchg_acq((ptr), (old), (new)))
+
+#endif /* _ASM_IA64_SYNC_BITOPS_H */
diff --git a/arch/ia64/include/asm/syscall.h b/arch/ia64/include/asm/syscall.h
new file mode 100644
index 000000000000..2f758a42f94b
--- /dev/null
+++ b/arch/ia64/include/asm/syscall.h
@@ -0,0 +1,163 @@
+/*
+ * Access to user system call parameters and results
+ *
+ * Copyright (C) 2008 Intel Corp.  Shaohua Li <shaohua.li@intel.com>
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * See asm-generic/syscall.h for descriptions of what we must do here.
+ */
+
+#ifndef _ASM_SYSCALL_H
+#define _ASM_SYSCALL_H  1
+
+#include <linux/sched.h>
+#include <linux/err.h>
+
+static inline long syscall_get_nr(struct task_struct *task,
+                                  struct pt_regs *regs)
+{
+        if ((long)regs->cr_ifs < 0) /* Not a syscall */
+                return -1;
+
+#ifdef CONFIG_IA32_SUPPORT
+        if (IS_IA32_PROCESS(regs))
+                return regs->r1;
+#endif
+
+        return regs->r15;
+}
+
+static inline void syscall_rollback(struct task_struct *task,
+                                    struct pt_regs *regs)
+{
+#ifdef CONFIG_IA32_SUPPORT
+        if (IS_IA32_PROCESS(regs))
+                regs->r8 = regs->r1;
+#endif
+
+        /* do nothing */
+}
+
+static inline long syscall_get_error(struct task_struct *task,
+                                     struct pt_regs *regs)
+{
+#ifdef CONFIG_IA32_SUPPORT
+        if (IS_IA32_PROCESS(regs))
+                return regs->r8;
+#endif
+
+        return regs->r10 == -1 ? regs->r8:0;
+}
+
+static inline long syscall_get_return_value(struct task_struct *task,
+                                            struct pt_regs *regs)
+{
+        return regs->r8;
+}
+
+static inline void syscall_set_return_value(struct task_struct *task,
+                                            struct pt_regs *regs,
+                                            int error, long val)
+{
+#ifdef CONFIG_IA32_SUPPORT
+        if (IS_IA32_PROCESS(regs)) {
+                regs->r8 = (long) error ? error : val;
+                return;
+        }
+#endif
+
+        if (error) {
+                /* error < 0, but ia64 uses > 0 return value */
+                regs->r8 = -error;
+                regs->r10 = -1;
+        } else {
+                regs->r8 = val;
+                regs->r10 = 0;
+        }
+}
+
+extern void ia64_syscall_get_set_arguments(struct task_struct *task,
+        struct pt_regs *regs, unsigned int i, unsigned int n,
+        unsigned long *args, int rw);
+static inline void syscall_get_arguments(struct task_struct *task,
+                                         struct pt_regs *regs,
+                                         unsigned int i, unsigned int n,
+                                         unsigned long *args)
+{
+        BUG_ON(i + n > 6);
+
+#ifdef CONFIG_IA32_SUPPORT
+        if (IS_IA32_PROCESS(regs)) {
+                switch (i + n) {
+                case 6:
+                        if (!n--) break;
+                        *args++ = regs->r13;
+                case 5:
+                        if (!n--) break;
+                        *args++ = regs->r15;
+                case 4:
+                        if (!n--) break;
+                        *args++ = regs->r14;
+                case 3:
+                        if (!n--) break;
+                        *args++ = regs->r10;
+                case 2:
+                        if (!n--) break;
+                        *args++ = regs->r9;
+                case 1:
+                        if (!n--) break;
+                        *args++ = regs->r11;
+                case 0:
+                        if (!n--) break;
+                default:
+                        BUG();
+                        break;
+                }
+
+                return;
+        }
+#endif
+        ia64_syscall_get_set_arguments(task, regs, i, n, args, 0);
+}
+
+static inline void syscall_set_arguments(struct task_struct *task,
+                                         struct pt_regs *regs,
+                                         unsigned int i, unsigned int n,
+                                         unsigned long *args)
+{
+        BUG_ON(i + n > 6);
+
+#ifdef CONFIG_IA32_SUPPORT
+        if (IS_IA32_PROCESS(regs)) {
+                switch (i + n) {
+                case 6:
+                        if (!n--) break;
+                        regs->r13 = *args++;
+                case 5:
+                        if (!n--) break;
+                        regs->r15 = *args++;
+                case 4:
+                        if (!n--) break;
+                        regs->r14 = *args++;
+                case 3:
+                        if (!n--) break;
+                        regs->r10 = *args++;
+                case 2:
+                        if (!n--) break;
+                        regs->r9 = *args++;
+                case 1:
+                        if (!n--) break;
+                        regs->r11 = *args++;
+                case 0:
+                        if (!n--) break;
+                }
+
+                return;
+        }
+#endif
+        ia64_syscall_get_set_arguments(task, regs, i, n, args, 1);
+}
+#endif  /* _ASM_SYSCALL_H */
diff --git a/arch/ia64/include/asm/thread_info.h b/arch/ia64/include/asm/thread_info.h
index 7c60fcdd2efd..ae6922626bf4 100644
--- a/arch/ia64/include/asm/thread_info.h
+++ b/arch/ia64/include/asm/thread_info.h
@@ -87,9 +87,6 @@ struct thread_info {
 #define alloc_task_struct()     ((struct task_struct *)__get_free_pages(GFP_KERNEL | __GFP_COMP, KERNEL_STACK_SIZE_ORDER))
 #define free_task_struct(tsk)   free_pages((unsigned long) (tsk), KERNEL_STACK_SIZE_ORDER)
 
-#define tsk_set_notify_resume(tsk) \
-        set_ti_thread_flag(task_thread_info(tsk), TIF_NOTIFY_RESUME)
-extern void tsk_clear_notify_resume(struct task_struct *tsk);
 #endif /* !__ASSEMBLY */
 
 /*
diff --git a/arch/ia64/include/asm/timex.h b/arch/ia64/include/asm/timex.h
index 05a6baf8a472..4e03cfe74a0c 100644
--- a/arch/ia64/include/asm/timex.h
+++ b/arch/ia64/include/asm/timex.h
@@ -39,4 +39,6 @@ get_cycles (void)
         return ret;
 }
 
+extern void ia64_cpu_local_tick (void);
+
 #endif /* _ASM_IA64_TIMEX_H */
diff --git a/arch/ia64/include/asm/unistd.h b/arch/ia64/include/asm/unistd.h
index d535833aab5e..f791576355ad 100644
--- a/arch/ia64/include/asm/unistd.h
+++ b/arch/ia64/include/asm/unistd.h
@@ -337,6 +337,7 @@
 # define __ARCH_WANT_SYS_NICE
 # define __ARCH_WANT_SYS_OLD_GETRLIMIT
 # define __ARCH_WANT_SYS_OLDUMOUNT
+# define __ARCH_WANT_SYS_PAUSE
 # define __ARCH_WANT_SYS_SIGPENDING
 # define __ARCH_WANT_SYS_SIGPROCMASK
 # define __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND
diff --git a/arch/ia64/include/asm/xen/events.h b/arch/ia64/include/asm/xen/events.h
new file mode 100644
index 000000000000..73248781fba8
--- /dev/null
+++ b/arch/ia64/include/asm/xen/events.h
@@ -0,0 +1,50 @@
+/******************************************************************************
+ * arch/ia64/include/asm/xen/events.h
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ *                    VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+#ifndef _ASM_IA64_XEN_EVENTS_H
+#define _ASM_IA64_XEN_EVENTS_H
+
+enum ipi_vector {
+        XEN_RESCHEDULE_VECTOR,
+        XEN_IPI_VECTOR,
+        XEN_CMCP_VECTOR,
+        XEN_CPEP_VECTOR,
+
+        XEN_NR_IPIS,
+};
+
+static inline int xen_irqs_disabled(struct pt_regs *regs)
+{
+        return !(ia64_psr(regs)->i);
+}
+
+static inline void xen_do_IRQ(int irq, struct pt_regs *regs)
+{
+        struct pt_regs *old_regs;
+        old_regs = set_irq_regs(regs);
+        irq_enter();
+        __do_IRQ(irq);
+        irq_exit();
+        set_irq_regs(old_regs);
+}
+#define irq_ctx_init(cpu)       do { } while (0)
+
+#endif /* _ASM_IA64_XEN_EVENTS_H */
diff --git a/arch/ia64/include/asm/xen/grant_table.h b/arch/ia64/include/asm/xen/grant_table.h
new file mode 100644
index 000000000000..2b1fae0e2d11
--- /dev/null
+++ b/arch/ia64/include/asm/xen/grant_table.h
@@ -0,0 +1,29 @@
+/******************************************************************************
+ * arch/ia64/include/asm/xen/grant_table.h
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ *                    VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#ifndef _ASM_IA64_XEN_GRANT_TABLE_H
+#define _ASM_IA64_XEN_GRANT_TABLE_H
+
+struct vm_struct *xen_alloc_vm_area(unsigned long size);
+void xen_free_vm_area(struct vm_struct *area);
+
+#endif /* _ASM_IA64_XEN_GRANT_TABLE_H */
diff --git a/arch/ia64/include/asm/xen/hypercall.h b/arch/ia64/include/asm/xen/hypercall.h
new file mode 100644
index 000000000000..96fc62366aa4
--- /dev/null
+++ b/arch/ia64/include/asm/xen/hypercall.h
@@ -0,0 +1,265 @@
+/******************************************************************************
+ * hypercall.h
+ *
+ * Linux-specific hypervisor handling.
+ *
+ * Copyright (c) 2002-2004, K A Fraser
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation; or, when distributed
+ * separately from the Linux kernel or incorporated into other
+ * software packages, subject to the following license:
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this source file (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy, modify,
+ * merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#ifndef _ASM_IA64_XEN_HYPERCALL_H
+#define _ASM_IA64_XEN_HYPERCALL_H
+
+#include <xen/interface/xen.h>
+#include <xen/interface/physdev.h>
+#include <xen/interface/sched.h>
+#include <asm/xen/xcom_hcall.h>
+struct xencomm_handle;
+extern unsigned long __hypercall(unsigned long a1, unsigned long a2,
+                                 unsigned long a3, unsigned long a4,
+                                 unsigned long a5, unsigned long cmd);
+
+/*
+ * Assembler stubs for hyper-calls.
+ */
+
+#define _hypercall0(type, name)                                 \
+({                                                              \
+        long __res;                                             \
+        __res = __hypercall(0, 0, 0, 0, 0, __HYPERVISOR_##name);\
+        (type)__res;                                            \
+})
+
+#define _hypercall1(type, name, a1)                             \
+({                                                              \
+        long __res;                                             \
+        __res = __hypercall((unsigned long)a1,                  \
+                             0, 0, 0, 0, __HYPERVISOR_##name);  \
+        (type)__res;                                            \
+})
+
+#define _hypercall2(type, name, a1, a2)                         \
+({                                                              \
+        long __res;                                             \
+        __res = __hypercall((unsigned long)a1,                  \
+                            (unsigned long)a2,                  \
+                            0, 0, 0, __HYPERVISOR_##name);      \
+        (type)__res;                                            \
+})
+
+#define _hypercall3(type, name, a1, a2, a3)                     \
+({                                                              \
+        long __res;                                             \
+        __res = __hypercall((unsigned long)a1,                  \
+                            (unsigned long)a2,                  \
+                            (unsigned long)a3,                  \
+                            0, 0, __HYPERVISOR_##name);         \
+        (type)__res;                                            \
+})
+
+#define _hypercall4(type, name, a1, a2, a3, a4)                 \
+({                                                              \
+        long __res;                                             \
+        __res = __hypercall((unsigned long)a1,                  \
+                            (unsigned long)a2,                  \
+                            (unsigned long)a3,                  \
+                            (unsigned long)a4,                  \
+                            0, __HYPERVISOR_##name);            \
+        (type)__res;                                            \
+})
+
+#define _hypercall5(type, name, a1, a2, a3, a4, a5)             \
+({                                                              \
+        long __res;                                             \
+        __res = __hypercall((unsigned long)a1,                  \
+                            (unsigned long)a2,                  \
+                            (unsigned long)a3,                  \
+                            (unsigned long)a4,                  \
+                            (unsigned long)a5,                  \
+                            __HYPERVISOR_##name);               \
+        (type)__res;                                            \
+})
+
+
+static inline int
+xencomm_arch_hypercall_sched_op(int cmd, struct xencomm_handle *arg)
+{
+        return _hypercall2(int, sched_op_new, cmd, arg);
+}
+
+static inline long
+HYPERVISOR_set_timer_op(u64 timeout)
+{
+        unsigned long timeout_hi = (unsigned long)(timeout >> 32);
+        unsigned long timeout_lo = (unsigned long)timeout;
+        return _hypercall2(long, set_timer_op, timeout_lo, timeout_hi);
+}
+
+static inline int
+xencomm_arch_hypercall_multicall(struct xencomm_handle *call_list,
+                                 int nr_calls)
+{
+        return _hypercall2(int, multicall, call_list, nr_calls);
+}
+
+static inline int
+xencomm_arch_hypercall_memory_op(unsigned int cmd, struct xencomm_handle *arg)
+{
+        return _hypercall2(int, memory_op, cmd, arg);
+}
+
+static inline int
+xencomm_arch_hypercall_event_channel_op(int cmd, struct xencomm_handle *arg)
+{
+        return _hypercall2(int, event_channel_op, cmd, arg);
+}
+
+static inline int
+xencomm_arch_hypercall_xen_version(int cmd, struct xencomm_handle *arg)
+{
+        return _hypercall2(int, xen_version, cmd, arg);
+}
+
+static inline int
+xencomm_arch_hypercall_console_io(int cmd, int count,
+                                  struct xencomm_handle *str)
+{
+        return _hypercall3(int, console_io, cmd, count, str);
+}
+
+static inline int
+xencomm_arch_hypercall_physdev_op(int cmd, struct xencomm_handle *arg)
+{
+        return _hypercall2(int, physdev_op, cmd, arg);
+}
+
+static inline int
+xencomm_arch_hypercall_grant_table_op(unsigned int cmd,
+                                      struct xencomm_handle *uop,
+                                      unsigned int count)
+{
+        return _hypercall3(int, grant_table_op, cmd, uop, count);
+}
+
+int HYPERVISOR_grant_table_op(unsigned int cmd, void *uop, unsigned int count);
+
+extern int xencomm_arch_hypercall_suspend(struct xencomm_handle *arg);
+
+static inline int
+xencomm_arch_hypercall_callback_op(int cmd, struct xencomm_handle *arg)
+{
+        return _hypercall2(int, callback_op, cmd, arg);
+}
+
+static inline long
+xencomm_arch_hypercall_vcpu_op(int cmd, int cpu, void *arg)
+{
+        return _hypercall3(long, vcpu_op, cmd, cpu, arg);
+}
+
+static inline int
+HYPERVISOR_physdev_op(int cmd, void *arg)
+{
+        switch (cmd) {
+        case PHYSDEVOP_eoi:
+                return _hypercall1(int, ia64_fast_eoi,
+                                   ((struct physdev_eoi *)arg)->irq);
+        default:
+                return xencomm_hypercall_physdev_op(cmd, arg);
+        }
+}
+
+static inline long
+xencomm_arch_hypercall_opt_feature(struct xencomm_handle *arg)
+{
+        return _hypercall1(long, opt_feature, arg);
+}
+
+/* for balloon driver */
+#define HYPERVISOR_update_va_mapping(va, new_val, flags) (0)
+
+/* Use xencomm to do hypercalls.  */
+#define HYPERVISOR_sched_op xencomm_hypercall_sched_op
+#define HYPERVISOR_event_channel_op xencomm_hypercall_event_channel_op
+#define HYPERVISOR_callback_op xencomm_hypercall_callback_op
+#define HYPERVISOR_multicall xencomm_hypercall_multicall
+#define HYPERVISOR_xen_version xencomm_hypercall_xen_version
+#define HYPERVISOR_console_io xencomm_hypercall_console_io
+#define HYPERVISOR_memory_op xencomm_hypercall_memory_op
+#define HYPERVISOR_suspend xencomm_hypercall_suspend
+#define HYPERVISOR_vcpu_op xencomm_hypercall_vcpu_op
+#define HYPERVISOR_opt_feature xencomm_hypercall_opt_feature
+
+/* to compile gnttab_copy_grant_page() in drivers/xen/core/gnttab.c */
+#define HYPERVISOR_mmu_update(req, count, success_count, domid) ({ BUG(); 0; })
+
+static inline int
+HYPERVISOR_shutdown(
+        unsigned int reason)
+{
+        struct sched_shutdown sched_shutdown = {
+                .reason = reason
+        };
+
+        int rc = HYPERVISOR_sched_op(SCHEDOP_shutdown, &sched_shutdown);
+
+        return rc;
+}
+
+/* for netfront.c, netback.c */
+#define MULTI_UVMFLAGS_INDEX 0 /* XXX any value */
+
+static inline void
+MULTI_update_va_mapping(
+        struct multicall_entry *mcl, unsigned long va,
+        pte_t new_val, unsigned long flags)
+{
+        mcl->op = __HYPERVISOR_update_va_mapping;
+        mcl->result = 0;
+}
+
+static inline void
+MULTI_grant_table_op(struct multicall_entry *mcl, unsigned int cmd,
+        void *uop, unsigned int count)
+{
+        mcl->op = __HYPERVISOR_grant_table_op;
+        mcl->args[0] = cmd;
+        mcl->args[1] = (unsigned long)uop;
+        mcl->args[2] = count;
+}
+
+static inline void
+MULTI_mmu_update(struct multicall_entry *mcl, struct mmu_update *req,
+                 int count, int *success_count, domid_t domid)
+{
+        mcl->op = __HYPERVISOR_mmu_update;
+        mcl->args[0] = (unsigned long)req;
+        mcl->args[1] = count;
+        mcl->args[2] = (unsigned long)success_count;
+        mcl->args[3] = domid;
+}
+
+#endif /* _ASM_IA64_XEN_HYPERCALL_H */
diff --git a/arch/ia64/include/asm/xen/hypervisor.h b/arch/ia64/include/asm/xen/hypervisor.h
new file mode 100644
index 000000000000..7a804e80fc67
--- /dev/null
+++ b/arch/ia64/include/asm/xen/hypervisor.h
@@ -0,0 +1,89 @@
+/******************************************************************************
+ * hypervisor.h
+ *
+ * Linux-specific hypervisor handling.
+ *
+ * Copyright (c) 2002-2004, K A Fraser
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation; or, when distributed
+ * separately from the Linux kernel or incorporated into other
+ * software packages, subject to the following license:
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this source file (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy, modify,
+ * merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#ifndef _ASM_IA64_XEN_HYPERVISOR_H
+#define _ASM_IA64_XEN_HYPERVISOR_H
+
+#ifdef CONFIG_XEN
+
+#include <linux/init.h>
+#include <xen/interface/xen.h>
+#include <xen/interface/version.h>      /* to compile feature.c */
+#include <xen/features.h>               /* to comiple xen-netfront.c */
+#include <asm/xen/hypercall.h>
+
+/* xen_domain_type is set before executing any C code by early_xen_setup */
+enum xen_domain_type {
+        XEN_NATIVE,
+        XEN_PV_DOMAIN,
+        XEN_HVM_DOMAIN,
+};
+
+extern enum xen_domain_type xen_domain_type;
+
+#define xen_domain()            (xen_domain_type != XEN_NATIVE)
+#define xen_pv_domain()         (xen_domain_type == XEN_PV_DOMAIN)
+#define xen_initial_domain()    (xen_pv_domain() && \
+                                 (xen_start_info->flags & SIF_INITDOMAIN))
+#define xen_hvm_domain()        (xen_domain_type == XEN_HVM_DOMAIN)
+
+/* deprecated. remove this */
+#define is_running_on_xen()     (xen_domain_type == XEN_PV_DOMAIN)
+
+extern struct shared_info *HYPERVISOR_shared_info;
+extern struct start_info *xen_start_info;
+
+void __init xen_setup_vcpu_info_placement(void);
+void force_evtchn_callback(void);
+
+/* for drivers/xen/balloon/balloon.c */
+#ifdef CONFIG_XEN_SCRUB_PAGES
+#define scrub_pages(_p, _n) memset((void *)(_p), 0, (_n) << PAGE_SHIFT)
+#else
+#define scrub_pages(_p, _n) ((void)0)
+#endif
+
+/* For setup_arch() in arch/ia64/kernel/setup.c */
+void xen_ia64_enable_opt_feature(void);
+
+#else /* CONFIG_XEN */
+
+#define xen_domain()            (0)
+#define xen_pv_domain()         (0)
+#define xen_initial_domain()    (0)
+#define xen_hvm_domain()        (0)
+#define is_running_on_xen()     (0)     /* deprecated. remove this */
+#endif
+
+#define is_initial_xendomain()  (0)     /* deprecated. remove this */
+
+#endif /* _ASM_IA64_XEN_HYPERVISOR_H */
diff --git a/arch/ia64/include/asm/xen/inst.h b/arch/ia64/include/asm/xen/inst.h
new file mode 100644
index 000000000000..19c2ae1d878a
--- /dev/null
+++ b/arch/ia64/include/asm/xen/inst.h
@@ -0,0 +1,458 @@
+/******************************************************************************
+ * arch/ia64/include/asm/xen/inst.h
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ *                    VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include <asm/xen/privop.h>
+
+#define ia64_ivt                                xen_ivt
+#define DO_SAVE_MIN                             XEN_DO_SAVE_MIN
+
+#define __paravirt_switch_to                    xen_switch_to
+#define __paravirt_leave_syscall                xen_leave_syscall
+#define __paravirt_work_processed_syscall       xen_work_processed_syscall
+#define __paravirt_leave_kernel                 xen_leave_kernel
+#define __paravirt_pending_syscall_end          xen_work_pending_syscall_end
+#define __paravirt_work_processed_syscall_target \
+                                                xen_work_processed_syscall
+
+#define MOV_FROM_IFA(reg)       \
+        movl reg = XSI_IFA;     \
+        ;;                      \
+        ld8 reg = [reg]
+
+#define MOV_FROM_ITIR(reg)      \
+        movl reg = XSI_ITIR;    \
+        ;;                      \
+        ld8 reg = [reg]
+
+#define MOV_FROM_ISR(reg)       \
+        movl reg = XSI_ISR;     \
+        ;;                      \
+        ld8 reg = [reg]
+
+#define MOV_FROM_IHA(reg)       \
+        movl reg = XSI_IHA;     \
+        ;;                      \
+        ld8 reg = [reg]
+
+#define MOV_FROM_IPSR(pred, reg)        \
+(pred)  movl reg = XSI_IPSR;            \
+        ;;                              \
+(pred)  ld8 reg = [reg]
+
+#define MOV_FROM_IIM(reg)       \
+        movl reg = XSI_IIM;     \
+        ;;                      \
+        ld8 reg = [reg]
+
+#define MOV_FROM_IIP(reg)       \
+        movl reg = XSI_IIP;     \
+        ;;                      \
+        ld8 reg = [reg]
+
+.macro __MOV_FROM_IVR reg, clob
+        .ifc "\reg", "r8"
+                XEN_HYPER_GET_IVR
+                .exitm
+        .endif
+        .ifc "\clob", "r8"
+                XEN_HYPER_GET_IVR
+                ;;
+                mov \reg = r8
+                .exitm
+        .endif
+
+        mov \clob = r8
+        ;;
+        XEN_HYPER_GET_IVR
+        ;;
+        mov \reg = r8
+        ;;
+        mov r8 = \clob
+.endm
+#define MOV_FROM_IVR(reg, clob) __MOV_FROM_IVR reg, clob
+
+.macro __MOV_FROM_PSR pred, reg, clob
+        .ifc "\reg", "r8"
+                (\pred) XEN_HYPER_GET_PSR;
+                .exitm
+        .endif
+        .ifc "\clob", "r8"
+                (\pred) XEN_HYPER_GET_PSR
+                ;;
+                (\pred) mov \reg = r8
+                .exitm
+        .endif
+
+        (\pred) mov \clob = r8
+        (\pred) XEN_HYPER_GET_PSR
+        ;;
+        (\pred) mov \reg = r8
+        (\pred) mov r8 = \clob
+.endm
+#define MOV_FROM_PSR(pred, reg, clob)   __MOV_FROM_PSR pred, reg, clob
+
+
+#define MOV_TO_IFA(reg, clob)   \
+        movl clob = XSI_IFA;    \
+        ;;                      \
+        st8 [clob] = reg        \
+
+#define MOV_TO_ITIR(pred, reg, clob)    \
+(pred)  movl clob = XSI_ITIR;           \
+        ;;                              \
+(pred)  st8 [clob] = reg
+
+#define MOV_TO_IHA(pred, reg, clob)     \
+(pred)  movl clob = XSI_IHA;            \
+        ;;                              \
+(pred)  st8 [clob] = reg
+
+#define MOV_TO_IPSR(pred, reg, clob)    \
+(pred)  movl clob = XSI_IPSR;           \
+        ;;                              \
+(pred)  st8 [clob] = reg;               \
+        ;;
+
+#define MOV_TO_IFS(pred, reg, clob)     \
+(pred)  movl clob = XSI_IFS;            \
+        ;;                              \
+(pred)  st8 [clob] = reg;               \
+        ;;
+
+#define MOV_TO_IIP(reg, clob)   \
+        movl clob = XSI_IIP;    \
+        ;;                      \
+        st8 [clob] = reg
+
+.macro ____MOV_TO_KR kr, reg, clob0, clob1
+        .ifc "\clob0", "r9"
+                .error "clob0 \clob0 must not be r9"
+        .endif
+        .ifc "\clob1", "r8"
+                .error "clob1 \clob1 must not be r8"
+        .endif
+
+        .ifnc "\reg", "r9"
+                .ifnc "\clob1", "r9"
+                        mov \clob1 = r9
+                .endif
+                mov r9 = \reg
+        .endif
+        .ifnc "\clob0", "r8"
+                mov \clob0 = r8
+        .endif
+        mov r8 = \kr
+        ;;
+        XEN_HYPER_SET_KR
+
+        .ifnc "\reg", "r9"
+                .ifnc "\clob1", "r9"
+                        mov r9 = \clob1
+                .endif
+        .endif
+        .ifnc "\clob0", "r8"
+                mov r8 = \clob0
+        .endif
+.endm
+
+.macro __MOV_TO_KR kr, reg, clob0, clob1
+        .ifc "\clob0", "r9"
+                ____MOV_TO_KR \kr, \reg, \clob1, \clob0
+                .exitm
+        .endif
+        .ifc "\clob1", "r8"
+                ____MOV_TO_KR \kr, \reg, \clob1, \clob0
+                .exitm
+        .endif
+
+        ____MOV_TO_KR \kr, \reg, \clob0, \clob1
+.endm
+
+#define MOV_TO_KR(kr, reg, clob0, clob1) \
+        __MOV_TO_KR IA64_KR_ ## kr, reg, clob0, clob1
+
+
+.macro __ITC_I pred, reg, clob
+        .ifc "\reg", "r8"
+                (\pred) XEN_HYPER_ITC_I
+                .exitm
+        .endif
+        .ifc "\clob", "r8"
+                (\pred) mov r8 = \reg
+                ;;
+                (\pred) XEN_HYPER_ITC_I
+                .exitm
+        .endif
+
+        (\pred) mov \clob = r8
+        (\pred) mov r8 = \reg
+        ;;
+        (\pred) XEN_HYPER_ITC_I
+        ;;
+        (\pred) mov r8 = \clob
+        ;;
+.endm
+#define ITC_I(pred, reg, clob)  __ITC_I pred, reg, clob
+
+.macro __ITC_D pred, reg, clob
+        .ifc "\reg", "r8"
+                (\pred) XEN_HYPER_ITC_D
+                ;;
+                .exitm
+        .endif
+        .ifc "\clob", "r8"
+                (\pred) mov r8 = \reg
+                ;;
+                (\pred) XEN_HYPER_ITC_D
+                ;;
+                .exitm
+        .endif
+
+        (\pred) mov \clob = r8
+        (\pred) mov r8 = \reg
+        ;;
+        (\pred) XEN_HYPER_ITC_D
+        ;;
+        (\pred) mov r8 = \clob
+        ;;
+.endm
+#define ITC_D(pred, reg, clob)  __ITC_D pred, reg, clob
+
+.macro __ITC_I_AND_D pred_i, pred_d, reg, clob
+        .ifc "\reg", "r8"
+                (\pred_i)XEN_HYPER_ITC_I
+                ;;
+                (\pred_d)XEN_HYPER_ITC_D
+                ;;
+                .exitm
+        .endif
+        .ifc "\clob", "r8"
+                mov r8 = \reg
+                ;;
+                (\pred_i)XEN_HYPER_ITC_I
+                ;;
+                (\pred_d)XEN_HYPER_ITC_D
+                ;;
+                .exitm
+        .endif
+
+        mov \clob = r8
+        mov r8 = \reg
+        ;;
+        (\pred_i)XEN_HYPER_ITC_I
+        ;;
+        (\pred_d)XEN_HYPER_ITC_D
+        ;;
+        mov r8 = \clob
+        ;;
+.endm
+#define ITC_I_AND_D(pred_i, pred_d, reg, clob) \
+        __ITC_I_AND_D pred_i, pred_d, reg, clob
+
+.macro __THASH pred, reg0, reg1, clob
+        .ifc "\reg0", "r8"
+                (\pred) mov r8 = \reg1
+                (\pred) XEN_HYPER_THASH
+                .exitm
+        .endc
+        .ifc "\reg1", "r8"
+                (\pred) XEN_HYPER_THASH
+                ;;
+                (\pred) mov \reg0 = r8
+                ;;
+                .exitm
+        .endif
+        .ifc "\clob", "r8"
+                (\pred) mov r8 = \reg1
+                (\pred) XEN_HYPER_THASH
+                ;;
+                (\pred) mov \reg0 = r8
+                ;;
+                .exitm
+        .endif
+
+        (\pred) mov \clob = r8
+        (\pred) mov r8 = \reg1
+        (\pred) XEN_HYPER_THASH
+        ;;
+        (\pred) mov \reg0 = r8
+        (\pred) mov r8 = \clob
+        ;;
+.endm
+#define THASH(pred, reg0, reg1, clob) __THASH pred, reg0, reg1, clob
+
+#define SSM_PSR_IC_AND_DEFAULT_BITS_AND_SRLZ_I(clob0, clob1)    \
+        mov clob0 = 1;                                          \
+        movl clob1 = XSI_PSR_IC;                                \
+        ;;                                                      \
+        st4 [clob1] = clob0                                     \
+        ;;
+
+#define SSM_PSR_IC_AND_SRLZ_D(clob0, clob1)     \
+        ;;                                      \
+        srlz.d;                                 \
+        mov clob1 = 1;                          \
+        movl clob0 = XSI_PSR_IC;                \
+        ;;                                      \
+        st4 [clob0] = clob1
+
+#define RSM_PSR_IC(clob)        \
+        movl clob = XSI_PSR_IC; \
+        ;;                      \
+        st4 [clob] = r0;        \
+        ;;
+
+/* pred will be clobbered */
+#define MASK_TO_PEND_OFS    (-1)
+#define SSM_PSR_I(pred, pred_clob, clob)                                \
+(pred)  movl clob = XSI_PSR_I_ADDR                                      \
+        ;;                                                              \
+(pred)  ld8 clob = [clob]                                               \
+        ;;                                                              \
+        /* if (pred) vpsr.i = 1 */                                      \
+        /* if (pred) (vcpu->vcpu_info->evtchn_upcall_mask)=0 */         \
+(pred)  st1 [clob] = r0, MASK_TO_PEND_OFS                               \
+        ;;                                                              \
+        /* if (vcpu->vcpu_info->evtchn_upcall_pending) */               \
+(pred)  ld1 clob = [clob]                                               \
+        ;;                                                              \
+(pred)  cmp.ne.unc pred_clob, p0 = clob, r0                             \
+        ;;                                                              \
+(pred_clob)XEN_HYPER_SSM_I      /* do areal ssm psr.i */
+
+#define RSM_PSR_I(pred, clob0, clob1)   \
+        movl clob0 = XSI_PSR_I_ADDR;    \
+        mov clob1 = 1;                  \
+        ;;                              \
+        ld8 clob0 = [clob0];            \
+        ;;                              \
+(pred)  st1 [clob0] = clob1
+
+#define RSM_PSR_I_IC(clob0, clob1, clob2)               \
+        movl clob0 = XSI_PSR_I_ADDR;                    \
+        movl clob1 = XSI_PSR_IC;                        \
+        ;;                                              \
+        ld8 clob0 = [clob0];                            \
+        mov clob2 = 1;                                  \
+        ;;                                              \
+        /* note: clears both vpsr.i and vpsr.ic! */     \
+        st1 [clob0] = clob2;                            \
+        st4 [clob1] = r0;                               \
+        ;;
+
+#define RSM_PSR_DT              \
+        XEN_HYPER_RSM_PSR_DT
+
+#define SSM_PSR_DT_AND_SRLZ_I   \
+        XEN_HYPER_SSM_PSR_DT
+
+#define BSW_0(clob0, clob1, clob2)                      \
+        ;;                                              \
+        /* r16-r31 all now hold bank1 values */         \
+        mov clob2 = ar.unat;                            \
+        movl clob0 = XSI_BANK1_R16;                     \
+        movl clob1 = XSI_BANK1_R16 + 8;                 \
+        ;;                                              \
+.mem.offset 0, 0; st8.spill [clob0] = r16, 16;          \
+.mem.offset 8, 0; st8.spill [clob1] = r17, 16;          \
+        ;;                                              \
+.mem.offset 0, 0; st8.spill [clob0] = r18, 16;          \
+.mem.offset 8, 0; st8.spill [clob1] = r19, 16;          \
+        ;;                                              \
+.mem.offset 0, 0; st8.spill [clob0] = r20, 16;          \
+.mem.offset 8, 0; st8.spill [clob1] = r21, 16;          \
+        ;;                                              \
+.mem.offset 0, 0; st8.spill [clob0] = r22, 16;          \
+.mem.offset 8, 0; st8.spill [clob1] = r23, 16;          \
+        ;;                                              \
+.mem.offset 0, 0; st8.spill [clob0] = r24, 16;          \
+.mem.offset 8, 0; st8.spill [clob1] = r25, 16;          \
+        ;;                                              \
+.mem.offset 0, 0; st8.spill [clob0] = r26, 16;          \
+.mem.offset 8, 0; st8.spill [clob1] = r27, 16;          \
+        ;;                                              \
+.mem.offset 0, 0; st8.spill [clob0] = r28, 16;          \
+.mem.offset 8, 0; st8.spill [clob1] = r29, 16;          \
+        ;;                                              \
+.mem.offset 0, 0; st8.spill [clob0] = r30, 16;          \
+.mem.offset 8, 0; st8.spill [clob1] = r31, 16;          \
+        ;;                                              \
+        mov clob1 = ar.unat;                            \
+        movl clob0 = XSI_B1NAT;                         \
+        ;;                                              \
+        st8 [clob0] = clob1;                            \
+        mov ar.unat = clob2;                            \
+        movl clob0 = XSI_BANKNUM;                       \
+        ;;                                              \
+        st4 [clob0] = r0
+
+
+        /* FIXME: THIS CODE IS NOT NaT SAFE! */
+#define XEN_BSW_1(clob)                 \
+        mov clob = ar.unat;             \
+        movl r30 = XSI_B1NAT;           \
+        ;;                              \
+        ld8 r30 = [r30];                \
+        mov r31 = 1;                    \
+        ;;                              \
+        mov ar.unat = r30;              \
+        movl r30 = XSI_BANKNUM;         \
+        ;;                              \
+        st4 [r30] = r31;                \
+        movl r30 = XSI_BANK1_R16;       \
+        movl r31 = XSI_BANK1_R16+8;     \
+        ;;                              \
+        ld8.fill r16 = [r30], 16;       \
+        ld8.fill r17 = [r31], 16;       \
+        ;;                              \
+        ld8.fill r18 = [r30], 16;       \
+        ld8.fill r19 = [r31], 16;       \
+        ;;                              \
+        ld8.fill r20 = [r30], 16;       \
+        ld8.fill r21 = [r31], 16;       \
+        ;;                              \
+        ld8.fill r22 = [r30], 16;       \
+        ld8.fill r23 = [r31], 16;       \
+        ;;                              \
+        ld8.fill r24 = [r30], 16;       \
+        ld8.fill r25 = [r31], 16;       \
+        ;;                              \
+        ld8.fill r26 = [r30], 16;       \
+        ld8.fill r27 = [r31], 16;       \
+        ;;                              \
+        ld8.fill r28 = [r30], 16;       \
+        ld8.fill r29 = [r31], 16;       \
+        ;;                              \
+        ld8.fill r30 = [r30];           \
+        ld8.fill r31 = [r31];           \
+        ;;                              \
+        mov ar.unat = clob
+
+#define BSW_1(clob0, clob1)     XEN_BSW_1(clob1)
+
+
+#define COVER   \
+        XEN_HYPER_COVER
+
+#define RFI                     \
+        XEN_HYPER_RFI;          \
+        dv_serialize_data
diff --git a/arch/ia64/include/asm/xen/interface.h b/arch/ia64/include/asm/xen/interface.h
new file mode 100644
index 000000000000..f00fab40854d
--- /dev/null
+++ b/arch/ia64/include/asm/xen/interface.h
@@ -0,0 +1,346 @@
+/******************************************************************************
+ * arch-ia64/hypervisor-if.h
+ *
+ * Guest OS interface to IA64 Xen.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Copyright by those who contributed. (in alphabetical order)
+ *
+ * Anthony Xu <anthony.xu@intel.com>
+ * Eddie Dong <eddie.dong@intel.com>
+ * Fred Yang <fred.yang@intel.com>
+ * Kevin Tian <kevin.tian@intel.com>
+ * Alex Williamson <alex.williamson@hp.com>
+ * Chris Wright <chrisw@sous-sol.org>
+ * Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
+ * Dietmar Hahn <dietmar.hahn@fujitsu-siemens.com>
+ * Hollis Blanchard <hollisb@us.ibm.com>
+ * Isaku Yamahata <yamahata@valinux.co.jp>
+ * Jan Beulich <jbeulich@novell.com>
+ * John Levon <john.levon@sun.com>
+ * Kazuhiro Suzuki <kaz@jp.fujitsu.com>
+ * Keir Fraser <keir.fraser@citrix.com>
+ * Kouya Shimura <kouya@jp.fujitsu.com>
+ * Masaki Kanno <kanno.masaki@jp.fujitsu.com>
+ * Matt Chapman <matthewc@hp.com>
+ * Matthew Chapman <matthewc@hp.com>
+ * Samuel Thibault <samuel.thibault@eu.citrix.com>
+ * Tomonari Horikoshi <t.horikoshi@jp.fujitsu.com>
+ * Tristan Gingold <tgingold@free.fr>
+ * Tsunehisa Doi <Doi.Tsunehisa@jp.fujitsu.com>
+ * Yutaka Ezaki <yutaka.ezaki@jp.fujitsu.com>
+ * Zhang Xin <xing.z.zhang@intel.com>
+ * Zhang xiantao <xiantao.zhang@intel.com>
+ * dan.magenheimer@hp.com
+ * ian.pratt@cl.cam.ac.uk
+ * michael.fetterman@cl.cam.ac.uk
+ */
+
+#ifndef _ASM_IA64_XEN_INTERFACE_H
+#define _ASM_IA64_XEN_INTERFACE_H
+
+#define __DEFINE_GUEST_HANDLE(name, type)       \
+        typedef struct { type *p; } __guest_handle_ ## name
+
+#define DEFINE_GUEST_HANDLE_STRUCT(name)        \
+        __DEFINE_GUEST_HANDLE(name, struct name)
+#define DEFINE_GUEST_HANDLE(name)       __DEFINE_GUEST_HANDLE(name, name)
+#define GUEST_HANDLE(name)              __guest_handle_ ## name
+#define GUEST_HANDLE_64(name)           GUEST_HANDLE(name)
+#define set_xen_guest_handle(hnd, val)  do { (hnd).p = val; } while (0)
+
+#ifndef __ASSEMBLY__
+/* Guest handles for primitive C types. */
+__DEFINE_GUEST_HANDLE(uchar, unsigned char);
+__DEFINE_GUEST_HANDLE(uint, unsigned int);
+__DEFINE_GUEST_HANDLE(ulong, unsigned long);
+__DEFINE_GUEST_HANDLE(u64, unsigned long);
+DEFINE_GUEST_HANDLE(char);
+DEFINE_GUEST_HANDLE(int);
+DEFINE_GUEST_HANDLE(long);
+DEFINE_GUEST_HANDLE(void);
+
+typedef unsigned long xen_pfn_t;
+DEFINE_GUEST_HANDLE(xen_pfn_t);
+#define PRI_xen_pfn     "lx"
+#endif
+
+/* Arch specific VIRQs definition */
+#define VIRQ_ITC        VIRQ_ARCH_0     /* V. Virtual itc timer */
+#define VIRQ_MCA_CMC    VIRQ_ARCH_1     /* MCA cmc interrupt */
+#define VIRQ_MCA_CPE    VIRQ_ARCH_2     /* MCA cpe interrupt */
+
+/* Maximum number of virtual CPUs in multi-processor guests. */
+/* keep sizeof(struct shared_page) <= PAGE_SIZE.
+ * this is checked in arch/ia64/xen/hypervisor.c. */
+#define MAX_VIRT_CPUS   64
+
+#ifndef __ASSEMBLY__
+
+#define INVALID_MFN     (~0UL)
+
+union vac {
+        unsigned long value;
+        struct {
+                int a_int:1;
+                int a_from_int_cr:1;
+                int a_to_int_cr:1;
+                int a_from_psr:1;
+                int a_from_cpuid:1;
+                int a_cover:1;
+                int a_bsw:1;
+                long reserved:57;
+        };
+};
+
+union vdc {
+        unsigned long value;
+        struct {
+                int d_vmsw:1;
+                int d_extint:1;
+                int d_ibr_dbr:1;
+                int d_pmc:1;
+                int d_to_pmd:1;
+                int d_itm:1;
+                long reserved:58;
+        };
+};
+
+struct mapped_regs {
+        union vac vac;
+        union vdc vdc;
+        unsigned long virt_env_vaddr;
+        unsigned long reserved1[29];
+        unsigned long vhpi;
+        unsigned long reserved2[95];
+        union {
+                unsigned long vgr[16];
+                unsigned long bank1_regs[16];   /* bank1 regs (r16-r31)
+                                                   when bank0 active */
+        };
+        union {
+                unsigned long vbgr[16];
+                unsigned long bank0_regs[16];   /* bank0 regs (r16-r31)
+                                                   when bank1 active */
+        };
+        unsigned long vnat;
+        unsigned long vbnat;
+        unsigned long vcpuid[5];
+        unsigned long reserved3[11];
+        unsigned long vpsr;
+        unsigned long vpr;
+        unsigned long reserved4[76];
+        union {
+                unsigned long vcr[128];
+                struct {
+                        unsigned long dcr;      /* CR0 */
+                        unsigned long itm;
+                        unsigned long iva;
+                        unsigned long rsv1[5];
+                        unsigned long pta;      /* CR8 */
+                        unsigned long rsv2[7];
+                        unsigned long ipsr;     /* CR16 */
+                        unsigned long isr;
+                        unsigned long rsv3;
+                        unsigned long iip;
+                        unsigned long ifa;
+                        unsigned long itir;
+                        unsigned long iipa;
+                        unsigned long ifs;
+                        unsigned long iim;      /* CR24 */
+                        unsigned long iha;
+                        unsigned long rsv4[38];
+                        unsigned long lid;      /* CR64 */
+                        unsigned long ivr;
+                        unsigned long tpr;
+                        unsigned long eoi;
+                        unsigned long irr[4];
+                        unsigned long itv;      /* CR72 */
+                        unsigned long pmv;
+                        unsigned long cmcv;
+                        unsigned long rsv5[5];
+                        unsigned long lrr0;     /* CR80 */
+                        unsigned long lrr1;
+                        unsigned long rsv6[46];
+                };
+        };
+        union {
+                unsigned long reserved5[128];
+                struct {
+                        unsigned long precover_ifs;
+                        unsigned long unat;     /* not sure if this is needed
+                                                   until NaT arch is done */
+                        int interrupt_collection_enabled; /* virtual psr.ic */
+
+                        /* virtual interrupt deliverable flag is
+                         * evtchn_upcall_mask in shared info area now.
+                         * interrupt_mask_addr is the address
+                         * of evtchn_upcall_mask for current vcpu
+                         */
+                        unsigned char *interrupt_mask_addr;
+                        int pending_interruption;
+                        unsigned char vpsr_pp;
+                        unsigned char vpsr_dfh;
+                        unsigned char hpsr_dfh;
+                        unsigned char hpsr_mfh;
+                        unsigned long reserved5_1[4];
+                        int metaphysical_mode;  /* 1 = use metaphys mapping
+                                                   0 = use virtual */
+                        int banknum;            /* 0 or 1, which virtual
+                                                   register bank is active */
+                        unsigned long rrs[8];   /* region registers */
+                        unsigned long krs[8];   /* kernel registers */
+                        unsigned long tmp[16];  /* temp registers
+                                                   (e.g. for hyperprivops) */
+                };
+        };
+};
+
+struct arch_vcpu_info {
+        /* nothing */
+};
+
+/*
+ * This structure is used for magic page in domain pseudo physical address
+ * space and the result of XENMEM_machine_memory_map.
+ * As the XENMEM_machine_memory_map result,
+ * xen_memory_map::nr_entries indicates the size in bytes
+ * including struct xen_ia64_memmap_info. Not the number of entries.
+ */
+struct xen_ia64_memmap_info {
+        uint64_t efi_memmap_size;       /* size of EFI memory map */
+        uint64_t efi_memdesc_size;      /* size of an EFI memory map
+                                         * descriptor */
+        uint32_t efi_memdesc_version;   /* memory descriptor version */
+        void *memdesc[0];               /* array of efi_memory_desc_t */
+};
+
+struct arch_shared_info {
+        /* PFN of the start_info page.  */
+        unsigned long start_info_pfn;
+
+        /* Interrupt vector for event channel.  */
+        int evtchn_vector;
+
+        /* PFN of memmap_info page */
+        unsigned int memmap_info_num_pages;     /* currently only = 1 case is
+                                                   supported. */
+        unsigned long memmap_info_pfn;
+
+        uint64_t pad[31];
+};
+
+struct xen_callback {
+        unsigned long ip;
+};
+typedef struct xen_callback xen_callback_t;
+
+#endif /* !__ASSEMBLY__ */
+
+/* Size of the shared_info area (this is not related to page size).  */
+#define XSI_SHIFT                       14
+#define XSI_SIZE                        (1 << XSI_SHIFT)
+/* Log size of mapped_regs area (64 KB - only 4KB is used).  */
+#define XMAPPEDREGS_SHIFT               12
+#define XMAPPEDREGS_SIZE                (1 << XMAPPEDREGS_SHIFT)
+/* Offset of XASI (Xen arch shared info) wrt XSI_BASE.  */
+#define XMAPPEDREGS_OFS                 XSI_SIZE
+
+/* Hyperprivops.  */
+#define HYPERPRIVOP_START               0x1
+#define HYPERPRIVOP_RFI                 (HYPERPRIVOP_START + 0x0)
+#define HYPERPRIVOP_RSM_DT              (HYPERPRIVOP_START + 0x1)
+#define HYPERPRIVOP_SSM_DT              (HYPERPRIVOP_START + 0x2)
+#define HYPERPRIVOP_COVER               (HYPERPRIVOP_START + 0x3)
+#define HYPERPRIVOP_ITC_D               (HYPERPRIVOP_START + 0x4)
+#define HYPERPRIVOP_ITC_I               (HYPERPRIVOP_START + 0x5)
+#define HYPERPRIVOP_SSM_I               (HYPERPRIVOP_START + 0x6)
+#define HYPERPRIVOP_GET_IVR             (HYPERPRIVOP_START + 0x7)
+#define HYPERPRIVOP_GET_TPR             (HYPERPRIVOP_START + 0x8)
+#define HYPERPRIVOP_SET_TPR             (HYPERPRIVOP_START + 0x9)
+#define HYPERPRIVOP_EOI                 (HYPERPRIVOP_START + 0xa)
+#define HYPERPRIVOP_SET_ITM             (HYPERPRIVOP_START + 0xb)
+#define HYPERPRIVOP_THASH               (HYPERPRIVOP_START + 0xc)
+#define HYPERPRIVOP_PTC_GA              (HYPERPRIVOP_START + 0xd)
+#define HYPERPRIVOP_ITR_D               (HYPERPRIVOP_START + 0xe)
+#define HYPERPRIVOP_GET_RR              (HYPERPRIVOP_START + 0xf)
+#define HYPERPRIVOP_SET_RR              (HYPERPRIVOP_START + 0x10)
+#define HYPERPRIVOP_SET_KR              (HYPERPRIVOP_START + 0x11)
+#define HYPERPRIVOP_FC                  (HYPERPRIVOP_START + 0x12)
+#define HYPERPRIVOP_GET_CPUID           (HYPERPRIVOP_START + 0x13)
+#define HYPERPRIVOP_GET_PMD             (HYPERPRIVOP_START + 0x14)
+#define HYPERPRIVOP_GET_EFLAG           (HYPERPRIVOP_START + 0x15)
+#define HYPERPRIVOP_SET_EFLAG           (HYPERPRIVOP_START + 0x16)
+#define HYPERPRIVOP_RSM_BE              (HYPERPRIVOP_START + 0x17)
+#define HYPERPRIVOP_GET_PSR             (HYPERPRIVOP_START + 0x18)
+#define HYPERPRIVOP_SET_RR0_TO_RR4      (HYPERPRIVOP_START + 0x19)
+#define HYPERPRIVOP_MAX                 (0x1a)
+
+/* Fast and light hypercalls.  */
+#define __HYPERVISOR_ia64_fast_eoi      __HYPERVISOR_arch_1
+
+/* Xencomm macros.  */
+#define XENCOMM_INLINE_MASK             0xf800000000000000UL
+#define XENCOMM_INLINE_FLAG             0x8000000000000000UL
+
+#ifndef __ASSEMBLY__
+
+/*
+ * Optimization features.
+ * The hypervisor may do some special optimizations for guests. This hypercall
+ * can be used to switch on/of these special optimizations.
+ */
+#define __HYPERVISOR_opt_feature        0x700UL
+
+#define XEN_IA64_OPTF_OFF               0x0
+#define XEN_IA64_OPTF_ON                0x1
+
+/*
+ * If this feature is switched on, the hypervisor inserts the
+ * tlb entries without calling the guests traphandler.
+ * This is useful in guests using region 7 for identity mapping
+ * like the linux kernel does.
+ */
+#define XEN_IA64_OPTF_IDENT_MAP_REG7    1
+
+/* Identity mapping of region 4 addresses in HVM. */
+#define XEN_IA64_OPTF_IDENT_MAP_REG4    2
+
+/* Identity mapping of region 5 addresses in HVM. */
+#define XEN_IA64_OPTF_IDENT_MAP_REG5    3
+
+#define XEN_IA64_OPTF_IDENT_MAP_NOT_SET  (0)
+
+struct xen_ia64_opt_feature {
+        unsigned long cmd;      /* Which feature */
+        unsigned char on;       /* Switch feature on/off */
+        union {
+                struct {
+                        /* The page protection bit mask of the pte.
+                         * This will be or'ed with the pte. */
+                        unsigned long pgprot;
+                        unsigned long key;      /* A protection key for itir.*/
+                };
+        };
+};
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _ASM_IA64_XEN_INTERFACE_H */
diff --git a/arch/ia64/include/asm/xen/irq.h b/arch/ia64/include/asm/xen/irq.h
new file mode 100644
index 000000000000..a90450983003
--- /dev/null
+++ b/arch/ia64/include/asm/xen/irq.h
@@ -0,0 +1,44 @@
+/******************************************************************************
+ * arch/ia64/include/asm/xen/irq.h
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ *                    VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#ifndef _ASM_IA64_XEN_IRQ_H
+#define _ASM_IA64_XEN_IRQ_H
+
+/*
+ * The flat IRQ space is divided into two regions:
+ *  1. A one-to-one mapping of real physical IRQs. This space is only used
+ *     if we have physical device-access privilege. This region is at the
+ *     start of the IRQ space so that existing device drivers do not need
+ *     to be modified to translate physical IRQ numbers into our IRQ space.
+ *  3. A dynamic mapping of inter-domain and Xen-sourced virtual IRQs. These
+ *     are bound using the provided bind/unbind functions.
+ */
+
+#define XEN_PIRQ_BASE           0
+#define XEN_NR_PIRQS            256
+
+#define XEN_DYNIRQ_BASE         (XEN_PIRQ_BASE + XEN_NR_PIRQS)
+#define XEN_NR_DYNIRQS          (NR_CPUS * 8)
+
+#define XEN_NR_IRQS             (XEN_NR_PIRQS + XEN_NR_DYNIRQS)
+
+#endif /* _ASM_IA64_XEN_IRQ_H */
diff --git a/arch/ia64/include/asm/xen/minstate.h b/arch/ia64/include/asm/xen/minstate.h
new file mode 100644
index 000000000000..4d92d9bbda7b
--- /dev/null
+++ b/arch/ia64/include/asm/xen/minstate.h
@@ -0,0 +1,134 @@
+/*
+ * DO_SAVE_MIN switches to the kernel stacks (if necessary) and saves
+ * the minimum state necessary that allows us to turn psr.ic back
+ * on.
+ *
+ * Assumed state upon entry:
+ *      psr.ic: off
+ *      r31:    contains saved predicates (pr)
+ *
+ * Upon exit, the state is as follows:
+ *      psr.ic: off
+ *       r2 = points to &pt_regs.r16
+ *       r8 = contents of ar.ccv
+ *       r9 = contents of ar.csd
+ *      r10 = contents of ar.ssd
+ *      r11 = FPSR_DEFAULT
+ *      r12 = kernel sp (kernel virtual address)
+ *      r13 = points to current task_struct (kernel virtual address)
+ *      p15 = TRUE if psr.i is set in cr.ipsr
+ *      predicate registers (other than p2, p3, and p15), b6, r3, r14, r15:
+ *              preserved
+ * CONFIG_XEN note: p6/p7 are not preserved
+ *
+ * Note that psr.ic is NOT turned on by this macro.  This is so that
+ * we can pass interruption state as arguments to a handler.
+ */
+#define XEN_DO_SAVE_MIN(__COVER,SAVE_IFS,EXTRA,WORKAROUND)                                      \
+        mov r16=IA64_KR(CURRENT);       /* M */                                                 \
+        mov r27=ar.rsc;                 /* M */                                                 \
+        mov r20=r1;                     /* A */                                                 \
+        mov r25=ar.unat;                /* M */                                                 \
+        MOV_FROM_IPSR(p0,r29);          /* M */                                                 \
+        MOV_FROM_IIP(r28);              /* M */                                                 \
+        mov r21=ar.fpsr;                /* M */                                                 \
+        mov r26=ar.pfs;                 /* I */                                                 \
+        __COVER;                        /* B;; (or nothing) */                                  \
+        adds r16=IA64_TASK_THREAD_ON_USTACK_OFFSET,r16;                                         \
+        ;;                                                                                      \
+        ld1 r17=[r16];                          /* load current->thread.on_ustack flag */       \
+        st1 [r16]=r0;                           /* clear current->thread.on_ustack flag */      \
+        adds r1=-IA64_TASK_THREAD_ON_USTACK_OFFSET,r16                                          \
+        /* switch from user to kernel RBS: */                                                   \
+        ;;                                                                                      \
+        invala;                         /* M */                                                 \
+        /* SAVE_IFS;*/ /* see xen special handling below */                                     \
+        cmp.eq pKStk,pUStk=r0,r17;              /* are we in kernel mode already? */            \
+        ;;                                                                                      \
+(pUStk) mov ar.rsc=0;           /* set enforced lazy mode, pl 0, little-endian, loadrs=0 */     \
+        ;;                                                                                      \
+(pUStk) mov.m r24=ar.rnat;                                                                      \
+(pUStk) addl r22=IA64_RBS_OFFSET,r1;                    /* compute base of RBS */               \
+(pKStk) mov r1=sp;                                      /* get sp  */                           \
+        ;;                                                                                      \
+(pUStk) lfetch.fault.excl.nt1 [r22];                                                            \
+(pUStk) addl r1=IA64_STK_OFFSET-IA64_PT_REGS_SIZE,r1;   /* compute base of memory stack */      \
+(pUStk) mov r23=ar.bspstore;                            /* save ar.bspstore */                  \
+        ;;                                                                                      \
+(pUStk) mov ar.bspstore=r22;                            /* switch to kernel RBS */              \
+(pKStk) addl r1=-IA64_PT_REGS_SIZE,r1;                  /* if in kernel mode, use sp (r12) */   \
+        ;;                                                                                      \
+(pUStk) mov r18=ar.bsp;                                                                         \
+(pUStk) mov ar.rsc=0x3;         /* set eager mode, pl 0, little-endian, loadrs=0 */             \
+        adds r17=2*L1_CACHE_BYTES,r1;           /* really: biggest cache-line size */           \
+        adds r16=PT(CR_IPSR),r1;                                                                \
+        ;;                                                                                      \
+        lfetch.fault.excl.nt1 [r17],L1_CACHE_BYTES;                                             \
+        st8 [r16]=r29;          /* save cr.ipsr */                                              \
+        ;;                                                                                      \
+        lfetch.fault.excl.nt1 [r17];                                                            \
+        tbit.nz p15,p0=r29,IA64_PSR_I_BIT;                                                      \
+        mov r29=b0                                                                              \
+        ;;                                                                                      \
+        WORKAROUND;                                                                             \
+        adds r16=PT(R8),r1;     /* initialize first base pointer */                             \
+        adds r17=PT(R9),r1;     /* initialize second base pointer */                            \
+(pKStk) mov r18=r0;             /* make sure r18 isn't NaT */                                   \
+        ;;                                                                                      \
+.mem.offset 0,0; st8.spill [r16]=r8,16;                                                         \
+.mem.offset 8,0; st8.spill [r17]=r9,16;                                                         \
+        ;;                                                                                      \
+.mem.offset 0,0; st8.spill [r16]=r10,24;                                                        \
+        movl r8=XSI_PRECOVER_IFS;                                                               \
+.mem.offset 8,0; st8.spill [r17]=r11,24;                                                        \
+        ;;                                                                                      \
+        /* xen special handling for possibly lazy cover */                                      \
+        /* SAVE_MIN case in dispatch_ia32_handler: mov r30=r0 */                                \
+        ld8 r30=[r8];                                                                           \
+(pUStk) sub r18=r18,r22;        /* r18=RSE.ndirty*8 */                                          \
+        st8 [r16]=r28,16;       /* save cr.iip */                                               \
+        ;;                                                                                      \
+        st8 [r17]=r30,16;       /* save cr.ifs */                                               \
+        mov r8=ar.ccv;                                                                          \
+        mov r9=ar.csd;                                                                          \
+        mov r10=ar.ssd;                                                                         \
+        movl r11=FPSR_DEFAULT;   /* L-unit */                                                   \
+        ;;                                                                                      \
+        st8 [r16]=r25,16;       /* save ar.unat */                                              \
+        st8 [r17]=r26,16;       /* save ar.pfs */                                               \
+        shl r18=r18,16;         /* compute ar.rsc to be used for "loadrs" */                    \
+        ;;                                                                                      \
+        st8 [r16]=r27,16;       /* save ar.rsc */                                               \
+(pUStk) st8 [r17]=r24,16;       /* save ar.rnat */                                              \
+(pKStk) adds r17=16,r17;        /* skip over ar_rnat field */                                   \
+        ;;                      /* avoid RAW on r16 & r17 */                                    \
+(pUStk) st8 [r16]=r23,16;       /* save ar.bspstore */                                          \
+        st8 [r17]=r31,16;       /* save predicates */                                           \
+(pKStk) adds r16=16,r16;        /* skip over ar_bspstore field */                               \
+        ;;                                                                                      \
+        st8 [r16]=r29,16;       /* save b0 */                                                   \
+        st8 [r17]=r18,16;       /* save ar.rsc value for "loadrs" */                            \
+        cmp.eq pNonSys,pSys=r0,r0       /* initialize pSys=0, pNonSys=1 */                      \
+        ;;                                                                                      \
+.mem.offset 0,0; st8.spill [r16]=r20,16;        /* save original r1 */                          \
+.mem.offset 8,0; st8.spill [r17]=r12,16;                                                        \
+        adds r12=-16,r1;        /* switch to kernel memory stack (with 16 bytes of scratch) */  \
+        ;;                                                                                      \
+.mem.offset 0,0; st8.spill [r16]=r13,16;                                                        \
+.mem.offset 8,0; st8.spill [r17]=r21,16;        /* save ar.fpsr */                              \
+        mov r13=IA64_KR(CURRENT);       /* establish `current' */                               \
+        ;;                                                                                      \
+.mem.offset 0,0; st8.spill [r16]=r15,16;                                                        \
+.mem.offset 8,0; st8.spill [r17]=r14,16;                                                        \
+        ;;                                                                                      \
+.mem.offset 0,0; st8.spill [r16]=r2,16;                                                         \
+.mem.offset 8,0; st8.spill [r17]=r3,16;                                                         \
+        ACCOUNT_GET_STAMP                                                                       \
+        adds r2=IA64_PT_REGS_R16_OFFSET,r1;                                                     \
+        ;;                                                                                      \
+        EXTRA;                                                                                  \
+        movl r1=__gp;           /* establish kernel global pointer */                           \
+        ;;                                                                                      \
+        ACCOUNT_SYS_ENTER                                                                       \
+        BSW_1(r3,r14);  /* switch back to bank 1 (must be last in insn group) */                \
+        ;;
diff --git a/arch/ia64/include/asm/xen/page.h b/arch/ia64/include/asm/xen/page.h
new file mode 100644
index 000000000000..03441a780b5b
--- /dev/null
+++ b/arch/ia64/include/asm/xen/page.h
@@ -0,0 +1,65 @@
+/******************************************************************************
+ * arch/ia64/include/asm/xen/page.h
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ *                    VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#ifndef _ASM_IA64_XEN_PAGE_H
+#define _ASM_IA64_XEN_PAGE_H
+
+#define INVALID_P2M_ENTRY       (~0UL)
+
+static inline unsigned long mfn_to_pfn(unsigned long mfn)
+{
+        return mfn;
+}
+
+static inline unsigned long pfn_to_mfn(unsigned long pfn)
+{
+        return pfn;
+}
+
+#define phys_to_machine_mapping_valid(_x)       (1)
+
+static inline void *mfn_to_virt(unsigned long mfn)
+{
+        return __va(mfn << PAGE_SHIFT);
+}
+
+static inline unsigned long virt_to_mfn(void *virt)
+{
+        return __pa(virt) >> PAGE_SHIFT;
+}
+
+/* for tpmfront.c */
+static inline unsigned long virt_to_machine(void *virt)
+{
+        return __pa(virt);
+}
+
+static inline void set_phys_to_machine(unsigned long pfn, unsigned long mfn)
+{
+        /* nothing */
+}
+
+#define pte_mfn(_x)     pte_pfn(_x)
+#define mfn_pte(_x, _y) __pte_ma(0)             /* unmodified use */
+#define __pte_ma(_x)    ((pte_t) {(_x)})        /* unmodified use */
+
+#endif /* _ASM_IA64_XEN_PAGE_H */
diff --git a/arch/ia64/include/asm/xen/privop.h b/arch/ia64/include/asm/xen/privop.h
new file mode 100644
index 000000000000..71ec7546e100
--- /dev/null
+++ b/arch/ia64/include/asm/xen/privop.h
@@ -0,0 +1,129 @@
+#ifndef _ASM_IA64_XEN_PRIVOP_H
+#define _ASM_IA64_XEN_PRIVOP_H
+
+/*
+ * Copyright (C) 2005 Hewlett-Packard Co
+ *      Dan Magenheimer <dan.magenheimer@hp.com>
+ *
+ * Paravirtualizations of privileged operations for Xen/ia64
+ *
+ *
+ * inline privop and paravirt_alt support
+ * Copyright (c) 2007 Isaku Yamahata <yamahata at valinux co jp>
+ *                    VA Linux Systems Japan K.K.
+ *
+ */
+
+#ifndef __ASSEMBLY__
+#include <linux/types.h>                /* arch-ia64.h requires uint64_t */
+#endif
+#include <asm/xen/interface.h>
+
+/* At 1 MB, before per-cpu space but still addressable using addl instead
+   of movl. */
+#define XSI_BASE                        0xfffffffffff00000
+
+/* Address of mapped regs.  */
+#define XMAPPEDREGS_BASE                (XSI_BASE + XSI_SIZE)
+
+#ifdef __ASSEMBLY__
+#define XEN_HYPER_RFI                   break HYPERPRIVOP_RFI
+#define XEN_HYPER_RSM_PSR_DT            break HYPERPRIVOP_RSM_DT
+#define XEN_HYPER_SSM_PSR_DT            break HYPERPRIVOP_SSM_DT
+#define XEN_HYPER_COVER                 break HYPERPRIVOP_COVER
+#define XEN_HYPER_ITC_D                 break HYPERPRIVOP_ITC_D
+#define XEN_HYPER_ITC_I                 break HYPERPRIVOP_ITC_I
+#define XEN_HYPER_SSM_I                 break HYPERPRIVOP_SSM_I
+#define XEN_HYPER_GET_IVR               break HYPERPRIVOP_GET_IVR
+#define XEN_HYPER_THASH                 break HYPERPRIVOP_THASH
+#define XEN_HYPER_ITR_D                 break HYPERPRIVOP_ITR_D
+#define XEN_HYPER_SET_KR                break HYPERPRIVOP_SET_KR
+#define XEN_HYPER_GET_PSR               break HYPERPRIVOP_GET_PSR
+#define XEN_HYPER_SET_RR0_TO_RR4        break HYPERPRIVOP_SET_RR0_TO_RR4
+
+#define XSI_IFS                         (XSI_BASE + XSI_IFS_OFS)
+#define XSI_PRECOVER_IFS                (XSI_BASE + XSI_PRECOVER_IFS_OFS)
+#define XSI_IFA                         (XSI_BASE + XSI_IFA_OFS)
+#define XSI_ISR                         (XSI_BASE + XSI_ISR_OFS)
+#define XSI_IIM                         (XSI_BASE + XSI_IIM_OFS)
+#define XSI_ITIR                        (XSI_BASE + XSI_ITIR_OFS)
+#define XSI_PSR_I_ADDR                  (XSI_BASE + XSI_PSR_I_ADDR_OFS)
+#define XSI_PSR_IC                      (XSI_BASE + XSI_PSR_IC_OFS)
+#define XSI_IPSR                        (XSI_BASE + XSI_IPSR_OFS)
+#define XSI_IIP                         (XSI_BASE + XSI_IIP_OFS)
+#define XSI_B1NAT                       (XSI_BASE + XSI_B1NATS_OFS)
+#define XSI_BANK1_R16                   (XSI_BASE + XSI_BANK1_R16_OFS)
+#define XSI_BANKNUM                     (XSI_BASE + XSI_BANKNUM_OFS)
+#define XSI_IHA                         (XSI_BASE + XSI_IHA_OFS)
+#endif
+
+#ifndef __ASSEMBLY__
+
+/************************************************/
+/* Instructions paravirtualized for correctness */
+/************************************************/
+
+/* "fc" and "thash" are privilege-sensitive instructions, meaning they
+ *  may have different semantics depending on whether they are executed
+ *  at PL0 vs PL!=0.  When paravirtualized, these instructions mustn't
+ *  be allowed to execute directly, lest incorrect semantics result. */
+extern void xen_fc(unsigned long addr);
+extern unsigned long xen_thash(unsigned long addr);
+
+/* Note that "ttag" and "cover" are also privilege-sensitive; "ttag"
+ * is not currently used (though it may be in a long-format VHPT system!)
+ * and the semantics of cover only change if psr.ic is off which is very
+ * rare (and currently non-existent outside of assembly code */
+
+/* There are also privilege-sensitive registers.  These registers are
+ * readable at any privilege level but only writable at PL0. */
+extern unsigned long xen_get_cpuid(int index);
+extern unsigned long xen_get_pmd(int index);
+
+extern unsigned long xen_get_eflag(void);       /* see xen_ia64_getreg */
+extern void xen_set_eflag(unsigned long);       /* see xen_ia64_setreg */
+
+/************************************************/
+/* Instructions paravirtualized for performance */
+/************************************************/
+
+/* Xen uses memory-mapped virtual privileged registers for access to many
+ * performance-sensitive privileged registers.  Some, like the processor
+ * status register (psr), are broken up into multiple memory locations.
+ * Others, like "pend", are abstractions based on privileged registers.
+ * "Pend" is guaranteed to be set if reading cr.ivr would return a
+ * (non-spurious) interrupt. */
+#define XEN_MAPPEDREGS ((struct mapped_regs *)XMAPPEDREGS_BASE)
+
+#define XSI_PSR_I                       \
+        (*XEN_MAPPEDREGS->interrupt_mask_addr)
+#define xen_get_virtual_psr_i()         \
+        (!XSI_PSR_I)
+#define xen_set_virtual_psr_i(_val)     \
+        ({ XSI_PSR_I = (uint8_t)(_val) ? 0 : 1; })
+#define xen_set_virtual_psr_ic(_val)    \
+        ({ XEN_MAPPEDREGS->interrupt_collection_enabled = _val ? 1 : 0; })
+#define xen_get_virtual_pend()          \
+        (*(((uint8_t *)XEN_MAPPEDREGS->interrupt_mask_addr) - 1))
+
+/* Although all privileged operations can be left to trap and will
+ * be properly handled by Xen, some are frequent enough that we use
+ * hyperprivops for performance. */
+extern unsigned long xen_get_psr(void);
+extern unsigned long xen_get_ivr(void);
+extern unsigned long xen_get_tpr(void);
+extern void xen_hyper_ssm_i(void);
+extern void xen_set_itm(unsigned long);
+extern void xen_set_tpr(unsigned long);
+extern void xen_eoi(unsigned long);
+extern unsigned long xen_get_rr(unsigned long index);
+extern void xen_set_rr(unsigned long index, unsigned long val);
+extern void xen_set_rr0_to_rr4(unsigned long val0, unsigned long val1,
+                               unsigned long val2, unsigned long val3,
+                               unsigned long val4);
+extern void xen_set_kr(unsigned long index, unsigned long val);
+extern void xen_ptcga(unsigned long addr, unsigned long size);
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* _ASM_IA64_XEN_PRIVOP_H */
diff --git a/arch/ia64/include/asm/xen/xcom_hcall.h b/arch/ia64/include/asm/xen/xcom_hcall.h
new file mode 100644
index 000000000000..20b2950c71b6
--- /dev/null
+++ b/arch/ia64/include/asm/xen/xcom_hcall.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2006 Tristan Gingold <tristan.gingold@bull.net>, Bull SAS
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ */
+
+#ifndef _ASM_IA64_XEN_XCOM_HCALL_H
+#define _ASM_IA64_XEN_XCOM_HCALL_H
+
+/* These function creates inline or mini descriptor for the parameters and
+   calls the corresponding xencomm_arch_hypercall_X.
+   Architectures should defines HYPERVISOR_xxx as xencomm_hypercall_xxx unless
+   they want to use their own wrapper.  */
+extern int xencomm_hypercall_console_io(int cmd, int count, char *str);
+
+extern int xencomm_hypercall_event_channel_op(int cmd, void *op);
+
+extern int xencomm_hypercall_xen_version(int cmd, void *arg);
+
+extern int xencomm_hypercall_physdev_op(int cmd, void *op);
+
+extern int xencomm_hypercall_grant_table_op(unsigned int cmd, void *op,
+                                            unsigned int count);
+
+extern int xencomm_hypercall_sched_op(int cmd, void *arg);
+
+extern int xencomm_hypercall_multicall(void *call_list, int nr_calls);
+
+extern int xencomm_hypercall_callback_op(int cmd, void *arg);
+
+extern int xencomm_hypercall_memory_op(unsigned int cmd, void *arg);
+
+extern int xencomm_hypercall_suspend(unsigned long srec);
+
+extern long xencomm_hypercall_vcpu_op(int cmd, int cpu, void *arg);
+
+extern long xencomm_hypercall_opt_feature(void *arg);
+
+#endif /* _ASM_IA64_XEN_XCOM_HCALL_H */
diff --git a/arch/ia64/include/asm/xen/xencomm.h b/arch/ia64/include/asm/xen/xencomm.h
new file mode 100644
index 000000000000..cded677bebf2
--- /dev/null
+++ b/arch/ia64/include/asm/xen/xencomm.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2006 Hollis Blanchard <hollisb@us.ibm.com>, IBM Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ */
+
+#ifndef _ASM_IA64_XEN_XENCOMM_H
+#define _ASM_IA64_XEN_XENCOMM_H
+
+#include <xen/xencomm.h>
+#include <asm/pgtable.h>
+
+/* Must be called before any hypercall.  */
+extern void xencomm_initialize(void);
+extern int xencomm_is_initialized(void);
+
+/* Check if virtual contiguity means physical contiguity
+ * where the passed address is a pointer value in virtual address.
+ * On ia64, identity mapping area in region 7 or the piece of region 5
+ * that is mapped by itr[IA64_TR_KERNEL]/dtr[IA64_TR_KERNEL]
+ */
+static inline int xencomm_is_phys_contiguous(unsigned long addr)
+{
+        return (PAGE_OFFSET <= addr &&
+                addr < (PAGE_OFFSET + (1UL << IA64_MAX_PHYS_BITS))) ||
+                (KERNEL_START <= addr &&
+                 addr < KERNEL_START + KERNEL_TR_PAGE_SIZE);
+}
+
+#endif /* _ASM_IA64_XEN_XENCOMM_H */
diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile
index 87fea11aecb7..c381ea954892 100644
--- a/arch/ia64/kernel/Makefile
+++ b/arch/ia64/kernel/Makefile
@@ -42,6 +42,10 @@ obj-$(CONFIG_IA64_ESI)		+= esi.o
 ifneq ($(CONFIG_IA64_ESI),)
 obj-y                           += esi_stub.o   # must be in kernel proper
 endif
+obj-$(CONFIG_DMAR)              += pci-dma.o
+ifeq ($(CONFIG_DMAR), y)
+obj-$(CONFIG_SWIOTLB)           += pci-swiotlb.o
+endif
 
 # The gate DSO image is built using a special linker script.
 targets += gate.so gate-syms.o
@@ -112,5 +116,23 @@ clean-files += $(objtree)/include/asm-ia64/nr-irqs.h
 ASM_PARAVIRT_OBJS = ivt.o entry.o
 define paravirtualized_native
 AFLAGS_$(1) += -D__IA64_ASM_PARAVIRTUALIZED_NATIVE
+AFLAGS_pvchk-sed-$(1) += -D__IA64_ASM_PARAVIRTUALIZED_PVCHECK
+extra-y += pvchk-$(1)
 endef
 $(foreach obj,$(ASM_PARAVIRT_OBJS),$(eval $(call paravirtualized_native,$(obj))))
+
+#
+# Checker for paravirtualizations of privileged operations.
+#
+quiet_cmd_pv_check_sed = PVCHK   $@
+define cmd_pv_check_sed
+        sed -f $(srctree)/arch/$(SRCARCH)/scripts/pvcheck.sed $< > $@
+endef
+
+$(obj)/pvchk-sed-%.s: $(src)/%.S $(srctree)/arch/$(SRCARCH)/scripts/pvcheck.sed FORCE
+        $(call if_changed_dep,as_s_S)
+$(obj)/pvchk-%.s: $(obj)/pvchk-sed-%.s FORCE
+        $(call if_changed,pv_check_sed)
+$(obj)/pvchk-%.o: $(obj)/pvchk-%.s FORCE
+        $(call if_changed,as_o_S)
+.PRECIOUS: $(obj)/pvchk-sed-%.s $(obj)/pvchk-%.s $(obj)/pvchk-%.o
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index 5d1eb7ee2bf6..0635015d0aaa 100644
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -52,6 +52,7 @@
 #include <asm/numa.h>
 #include <asm/sal.h>
 #include <asm/cyclone.h>
+#include <asm/xen/hypervisor.h>
 
 #define BAD_MADT_ENTRY(entry, end) (                                        \
                 (!entry) || (unsigned long)entry + sizeof(*entry) > end ||  \
@@ -91,6 +92,9 @@ acpi_get_sysname(void)
         struct acpi_table_rsdp *rsdp;
         struct acpi_table_xsdt *xsdt;
         struct acpi_table_header *hdr;
+#ifdef CONFIG_DMAR
+        u64 i, nentries;
+#endif
 
         rsdp_phys = acpi_find_rsdp();
         if (!rsdp_phys) {
@@ -121,7 +125,21 @@ acpi_get_sysname(void)
                         return "uv";
                 else
                         return "sn2";
+        } else if (xen_pv_domain() && !strcmp(hdr->oem_id, "XEN")) {
+                return "xen";
+        }
+
+#ifdef CONFIG_DMAR
+        /* Look for Intel IOMMU */
+        nentries = (hdr->length - sizeof(*hdr)) /
+                         sizeof(xsdt->table_offset_entry[0]);
+        for (i = 0; i < nentries; i++) {
+                hdr = __va(xsdt->table_offset_entry[i]);
+                if (strncmp(hdr->signature, ACPI_SIG_DMAR,
+                        sizeof(ACPI_SIG_DMAR) - 1) == 0)
+                        return "dig_vtd";
         }
+#endif
 
         return "dig";
 #else
@@ -137,6 +155,10 @@ acpi_get_sysname(void)
         return "uv";
 # elif defined (CONFIG_IA64_DIG)
         return "dig";
+# elif defined (CONFIG_IA64_XEN_GUEST)
+        return "xen";
+# elif defined(CONFIG_IA64_DIG_VTD)
+        return "dig_vtd";
 # else
 #       error Unknown platform.  Fix acpi.c.
 # endif
diff --git a/arch/ia64/kernel/asm-offsets.c b/arch/ia64/kernel/asm-offsets.c
index 94c44b1ccfd0..742dbb1d5a4f 100644
--- a/arch/ia64/kernel/asm-offsets.c
+++ b/arch/ia64/kernel/asm-offsets.c
@@ -16,6 +16,9 @@
 #include <asm/sigcontext.h>
 #include <asm/mca.h>
 
+#include <asm/xen/interface.h>
+#include <asm/xen/hypervisor.h>
+
 #include "../kernel/sigframe.h"
 #include "../kernel/fsyscall_gtod_data.h"
 
@@ -286,4 +289,32 @@ void foo(void)
                 offsetof (struct itc_jitter_data_t, itc_jitter));
         DEFINE(IA64_ITC_LASTCYCLE_OFFSET,
                 offsetof (struct itc_jitter_data_t, itc_lastcycle));
+
+#ifdef CONFIG_XEN
+        BLANK();
+
+        DEFINE(XEN_NATIVE_ASM, XEN_NATIVE);
+        DEFINE(XEN_PV_DOMAIN_ASM, XEN_PV_DOMAIN);
+
+#define DEFINE_MAPPED_REG_OFS(sym, field) \
+        DEFINE(sym, (XMAPPEDREGS_OFS + offsetof(struct mapped_regs, field)))
+
+        DEFINE_MAPPED_REG_OFS(XSI_PSR_I_ADDR_OFS, interrupt_mask_addr);
+        DEFINE_MAPPED_REG_OFS(XSI_IPSR_OFS, ipsr);
+        DEFINE_MAPPED_REG_OFS(XSI_IIP_OFS, iip);
+        DEFINE_MAPPED_REG_OFS(XSI_IFS_OFS, ifs);
+        DEFINE_MAPPED_REG_OFS(XSI_PRECOVER_IFS_OFS, precover_ifs);
+        DEFINE_MAPPED_REG_OFS(XSI_ISR_OFS, isr);
+        DEFINE_MAPPED_REG_OFS(XSI_IFA_OFS, ifa);
+        DEFINE_MAPPED_REG_OFS(XSI_IIPA_OFS, iipa);
+        DEFINE_MAPPED_REG_OFS(XSI_IIM_OFS, iim);
+        DEFINE_MAPPED_REG_OFS(XSI_IHA_OFS, iha);
+        DEFINE_MAPPED_REG_OFS(XSI_ITIR_OFS, itir);
+        DEFINE_MAPPED_REG_OFS(XSI_PSR_IC_OFS, interrupt_collection_enabled);
+        DEFINE_MAPPED_REG_OFS(XSI_BANKNUM_OFS, banknum);
+        DEFINE_MAPPED_REG_OFS(XSI_BANK0_R16_OFS, bank0_regs[0]);
+        DEFINE_MAPPED_REG_OFS(XSI_BANK1_R16_OFS, bank1_regs[0]);
+        DEFINE_MAPPED_REG_OFS(XSI_B0NATS_OFS, vbnat);
+        DEFINE_MAPPED_REG_OFS(XSI_B1NATS_OFS, vnat);
+#endif /* CONFIG_XEN */
 }
diff --git a/arch/ia64/kernel/entry.S b/arch/ia64/kernel/entry.S
index 0dd6c1419d8d..7ef0c594f5ed 100644
--- a/arch/ia64/kernel/entry.S
+++ b/arch/ia64/kernel/entry.S
@@ -534,6 +534,11 @@ GLOBAL_ENTRY(ia64_trace_syscall)
         stf.spill [r16]=f10
         stf.spill [r17]=f11
         br.call.sptk.many rp=syscall_trace_enter // give parent a chance to catch syscall args
+        cmp.lt p6,p0=r8,r0                      // check tracehook
+        adds r2=PT(R8)+16,sp                    // r2 = &pt_regs.r8
+        adds r3=PT(R10)+16,sp                   // r3 = &pt_regs.r10
+        mov r10=0
+(p6)    br.cond.sptk strace_error               // syscall failed ->
         adds r16=PT(F6)+16,sp
         adds r17=PT(F7)+16,sp
         ;;
diff --git a/arch/ia64/kernel/ivt.S b/arch/ia64/kernel/ivt.S
index 416a952b19bd..f675d8e33853 100644
--- a/arch/ia64/kernel/ivt.S
+++ b/arch/ia64/kernel/ivt.S
@@ -580,7 +580,7 @@ ENTRY(dirty_bit)
         mov b0=r29                              // restore b0
         ;;
         st8 [r17]=r18                           // store back updated PTE
-        itc.d r18                               // install updated PTE
+        ITC_D(p0, r18, r16)                     // install updated PTE
 #endif
         mov pr=r31,-1                           // restore pr
         RFI
@@ -646,7 +646,7 @@ ENTRY(iaccess_bit)
         mov b0=r29                              // restore b0
         ;;
         st8 [r17]=r18                           // store back updated PTE
-        itc.i r18                               // install updated PTE
+        ITC_I(p0, r18, r16)                     // install updated PTE
 #endif /* !CONFIG_SMP */
         mov pr=r31,-1
         RFI
@@ -698,7 +698,7 @@ ENTRY(daccess_bit)
         or r18=_PAGE_A,r18                      // set the accessed bit
         ;;
         st8 [r17]=r18                           // store back updated PTE
-        itc.d r18                               // install updated PTE
+        ITC_D(p0, r18, r16)                     // install updated PTE
 #endif
         mov b0=r29                              // restore b0
         mov pr=r31,-1
diff --git a/arch/ia64/kernel/msi_ia64.c b/arch/ia64/kernel/msi_ia64.c
index 60c6ef67ebb2..702a09c13238 100644
--- a/arch/ia64/kernel/msi_ia64.c
+++ b/arch/ia64/kernel/msi_ia64.c
@@ -5,6 +5,7 @@
 #include <linux/pci.h>
 #include <linux/irq.h>
 #include <linux/msi.h>
+#include <linux/dmar.h>
 #include <asm/smp.h>
 
 /*
@@ -162,3 +163,82 @@ void arch_teardown_msi_irq(unsigned int irq)
 
         return ia64_teardown_msi_irq(irq);
 }
+
+#ifdef CONFIG_DMAR
+#ifdef CONFIG_SMP
+static void dmar_msi_set_affinity(unsigned int irq, cpumask_t mask)
+{
+        struct irq_cfg *cfg = irq_cfg + irq;
+        struct msi_msg msg;
+        int cpu = first_cpu(mask);
+
+
+        if (!cpu_online(cpu))
+                return;
+
+        if (irq_prepare_move(irq, cpu))
+                return;
+
+        dmar_msi_read(irq, &msg);
+
+        msg.data &= ~MSI_DATA_VECTOR_MASK;
+        msg.data |= MSI_DATA_VECTOR(cfg->vector);
+        msg.address_lo &= ~MSI_ADDR_DESTID_MASK;
+        msg.address_lo |= MSI_ADDR_DESTID_CPU(cpu_physical_id(cpu));
+
+        dmar_msi_write(irq, &msg);
+        irq_desc[irq].affinity = mask;
+}
+#endif /* CONFIG_SMP */
+
+struct irq_chip dmar_msi_type = {
+        .name = "DMAR_MSI",
+        .unmask = dmar_msi_unmask,
+        .mask = dmar_msi_mask,
+        .ack = ia64_ack_msi_irq,
+#ifdef CONFIG_SMP
+        .set_affinity = dmar_msi_set_affinity,
+#endif
+        .retrigger = ia64_msi_retrigger_irq,
+};
+
+static int
+msi_compose_msg(struct pci_dev *pdev, unsigned int irq, struct msi_msg *msg)
+{
+        struct irq_cfg *cfg = irq_cfg + irq;
+        unsigned dest;
+        cpumask_t mask;
+
+        cpus_and(mask, irq_to_domain(irq), cpu_online_map);
+        dest = cpu_physical_id(first_cpu(mask));
+
+        msg->address_hi = 0;
+        msg->address_lo =
+                MSI_ADDR_HEADER |
+                MSI_ADDR_DESTMODE_PHYS |
+                MSI_ADDR_REDIRECTION_CPU |
+                MSI_ADDR_DESTID_CPU(dest);
+
+        msg->data =
+                MSI_DATA_TRIGGER_EDGE |
+                MSI_DATA_LEVEL_ASSERT |
+                MSI_DATA_DELIVERY_FIXED |
+                MSI_DATA_VECTOR(cfg->vector);
+        return 0;
+}
+
+int arch_setup_dmar_msi(unsigned int irq)
+{
+        int ret;
+        struct msi_msg msg;
+
+        ret = msi_compose_msg(NULL, irq, &msg);
+        if (ret < 0)
+                return ret;
+        dmar_msi_write(irq, &msg);
+        set_irq_chip_and_handler_name(irq, &dmar_msi_type, handle_edge_irq,
+                "edge");
+        return 0;
+}
+#endif /* CONFIG_DMAR */
+
diff --git a/arch/ia64/kernel/nr-irqs.c b/arch/ia64/kernel/nr-irqs.c
index 8273afc32db8..ee564575148e 100644
--- a/arch/ia64/kernel/nr-irqs.c
+++ b/arch/ia64/kernel/nr-irqs.c
@@ -10,6 +10,7 @@
 #include <linux/kbuild.h>
 #include <linux/threads.h>
 #include <asm/native/irq.h>
+#include <asm/xen/irq.h>
 
 void foo(void)
 {
diff --git a/arch/ia64/kernel/paravirt.c b/arch/ia64/kernel/paravirt.c
index afaf5b9a2cf0..de35d8e8b7d2 100644
--- a/arch/ia64/kernel/paravirt.c
+++ b/arch/ia64/kernel/paravirt.c
@@ -332,7 +332,7 @@ ia64_native_iosapic_write(char __iomem *iosapic, unsigned int reg, u32 val)
 
 struct pv_iosapic_ops pv_iosapic_ops = {
         .pcat_compat_init = ia64_native_iosapic_pcat_compat_init,
-        .get_irq_chip = ia64_native_iosapic_get_irq_chip,
+        .__get_irq_chip = ia64_native_iosapic_get_irq_chip,
 
         .__read = ia64_native_iosapic_read,
         .__write = ia64_native_iosapic_write,
diff --git a/arch/ia64/kernel/paravirt_inst.h b/arch/ia64/kernel/paravirt_inst.h
index 5cad6fb2ed19..64d6d810c64b 100644
--- a/arch/ia64/kernel/paravirt_inst.h
+++ b/arch/ia64/kernel/paravirt_inst.h
@@ -20,7 +20,9 @@
  *
  */
 
-#ifdef __IA64_ASM_PARAVIRTUALIZED_XEN
+#ifdef __IA64_ASM_PARAVIRTUALIZED_PVCHECK
+#include <asm/native/pvchk_inst.h>
+#elif defined(__IA64_ASM_PARAVIRTUALIZED_XEN)
 #include <asm/xen/inst.h>
 #include <asm/xen/minstate.h>
 #else
diff --git a/arch/ia64/kernel/pci-dma.c b/arch/ia64/kernel/pci-dma.c
new file mode 100644
index 000000000000..10a75b557650
--- /dev/null
+++ b/arch/ia64/kernel/pci-dma.c
@@ -0,0 +1,129 @@
+/*
+ * Dynamic DMA mapping support.
+ */
+
+#include <linux/types.h>
+#include <linux/mm.h>
+#include <linux/string.h>
+#include <linux/pci.h>
+#include <linux/module.h>
+#include <linux/dmar.h>
+#include <asm/iommu.h>
+#include <asm/machvec.h>
+#include <linux/dma-mapping.h>
+
+#include <asm/machvec.h>
+#include <asm/system.h>
+
+#ifdef CONFIG_DMAR
+
+#include <linux/kernel.h>
+#include <linux/string.h>
+
+#include <asm/page.h>
+#include <asm/iommu.h>
+
+dma_addr_t bad_dma_address __read_mostly;
+EXPORT_SYMBOL(bad_dma_address);
+
+static int iommu_sac_force __read_mostly;
+
+int no_iommu __read_mostly;
+#ifdef CONFIG_IOMMU_DEBUG
+int force_iommu __read_mostly = 1;
+#else
+int force_iommu __read_mostly;
+#endif
+
+/* Set this to 1 if there is a HW IOMMU in the system */
+int iommu_detected __read_mostly;
+
+/* Dummy device used for NULL arguments (normally ISA). Better would
+   be probably a smaller DMA mask, but this is bug-to-bug compatible
+   to i386. */
+struct device fallback_dev = {
+        .bus_id = "fallback device",
+        .coherent_dma_mask = DMA_32BIT_MASK,
+        .dma_mask = &fallback_dev.coherent_dma_mask,
+};
+
+void __init pci_iommu_alloc(void)
+{
+        /*
+         * The order of these functions is important for
+         * fall-back/fail-over reasons
+         */
+        detect_intel_iommu();
+
+#ifdef CONFIG_SWIOTLB
+        pci_swiotlb_init();
+#endif
+}
+
+static int __init pci_iommu_init(void)
+{
+        if (iommu_detected)
+                intel_iommu_init();
+
+        return 0;
+}
+
+/* Must execute after PCI subsystem */
+fs_initcall(pci_iommu_init);
+
+void pci_iommu_shutdown(void)
+{
+        return;
+}
+
+void __init
+iommu_dma_init(void)
+{
+        return;
+}
+
+struct dma_mapping_ops *dma_ops;
+EXPORT_SYMBOL(dma_ops);
+
+int iommu_dma_supported(struct device *dev, u64 mask)
+{
+        struct dma_mapping_ops *ops = get_dma_ops(dev);
+
+#ifdef CONFIG_PCI
+        if (mask > 0xffffffff && forbid_dac > 0) {
+                dev_info(dev, "Disallowing DAC for device\n");
+                return 0;
+        }
+#endif
+
+        if (ops->dma_supported_op)
+                return ops->dma_supported_op(dev, mask);
+
+        /* Copied from i386. Doesn't make much sense, because it will
+           only work for pci_alloc_coherent.
+           The caller just has to use GFP_DMA in this case. */
+        if (mask < DMA_24BIT_MASK)
+                return 0;
+
+        /* Tell the device to use SAC when IOMMU force is on.  This
+           allows the driver to use cheaper accesses in some cases.
+
+           Problem with this is that if we overflow the IOMMU area and
+           return DAC as fallback address the device may not handle it
+           correctly.
+
+           As a special case some controllers have a 39bit address
+           mode that is as efficient as 32bit (aic79xx). Don't force
+           SAC for these.  Assume all masks <= 40 bits are of this
+           type. Normally this doesn't make any difference, but gives
+           more gentle handling of IOMMU overflow. */
+        if (iommu_sac_force && (mask >= DMA_40BIT_MASK)) {
+                dev_info(dev, "Force SAC with mask %lx\n", mask);
+                return 0;
+        }
+
+        return 1;
+}
+EXPORT_SYMBOL(iommu_dma_supported);
+
+#endif
diff --git a/arch/ia64/kernel/pci-swiotlb.c b/arch/ia64/kernel/pci-swiotlb.c
new file mode 100644
index 000000000000..16c50516dbc1
--- /dev/null
+++ b/arch/ia64/kernel/pci-swiotlb.c
@@ -0,0 +1,46 @@
+/* Glue code to lib/swiotlb.c */
+
+#include <linux/pci.h>
+#include <linux/cache.h>
+#include <linux/module.h>
+#include <linux/dma-mapping.h>
+
+#include <asm/swiotlb.h>
+#include <asm/dma.h>
+#include <asm/iommu.h>
+#include <asm/machvec.h>
+
+int swiotlb __read_mostly;
+EXPORT_SYMBOL(swiotlb);
+
+struct dma_mapping_ops swiotlb_dma_ops = {
+        .mapping_error = swiotlb_dma_mapping_error,
+        .alloc_coherent = swiotlb_alloc_coherent,
+        .free_coherent = swiotlb_free_coherent,
+        .map_single = swiotlb_map_single,
+        .unmap_single = swiotlb_unmap_single,
+        .sync_single_for_cpu = swiotlb_sync_single_for_cpu,
+        .sync_single_for_device = swiotlb_sync_single_for_device,
+        .sync_single_range_for_cpu = swiotlb_sync_single_range_for_cpu,
+        .sync_single_range_for_device = swiotlb_sync_single_range_for_device,
+        .sync_sg_for_cpu = swiotlb_sync_sg_for_cpu,
+        .sync_sg_for_device = swiotlb_sync_sg_for_device,
+        .map_sg = swiotlb_map_sg,
+        .unmap_sg = swiotlb_unmap_sg,
+        .dma_supported_op = swiotlb_dma_supported,
+};
+
+void __init pci_swiotlb_init(void)
+{
+        if (!iommu_detected) {
+#ifdef CONFIG_IA64_GENERIC
+                swiotlb = 1;
+                printk(KERN_INFO "PCI-DMA: Re-initialize machine vector.\n");
+                machvec_init("dig");
+                swiotlb_init();
+                dma_ops = &swiotlb_dma_ops;
+#else
+                panic("Unable to find Intel IOMMU");
+#endif
+        }
+}
diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c
index fc8f3509df27..ada4605d1223 100644
--- a/arch/ia64/kernel/perfmon.c
+++ b/arch/ia64/kernel/perfmon.c
@@ -40,6 +40,7 @@
 #include <linux/capability.h>
 #include <linux/rcupdate.h>
 #include <linux/completion.h>
+#include <linux/tracehook.h>
 
 #include <asm/errno.h>
 #include <asm/intrinsics.h>
@@ -3684,7 +3685,7 @@ pfm_restart(pfm_context_t *ctx, void *arg, int count, struct pt_regs *regs)
 
                 PFM_SET_WORK_PENDING(task, 1);
 
-                tsk_set_notify_resume(task);
+                set_notify_resume(task);
 
                 /*
                  * XXX: send reschedule if task runs on another CPU
@@ -5044,8 +5045,6 @@ pfm_handle_work(void)
 
         PFM_SET_WORK_PENDING(current, 0);
 
-        tsk_clear_notify_resume(current);
-
         regs = task_pt_regs(current);
 
         /*
@@ -5414,7 +5413,7 @@ pfm_overflow_handler(struct task_struct *task, pfm_context_t *ctx, u64 pmc0, str
                          * when coming from ctxsw, current still points to the
                          * previous task, therefore we must work with task and not current.
                          */
-                        tsk_set_notify_resume(task);
+                        set_notify_resume(task);
                 }
                 /*
                  * defer until state is changed (shorten spin window). the context is locked
diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c
index 3ab8373103ec..c57162705147 100644
--- a/arch/ia64/kernel/process.c
+++ b/arch/ia64/kernel/process.c
@@ -28,6 +28,7 @@
 #include <linux/delay.h>
 #include <linux/kdebug.h>
 #include <linux/utsname.h>
+#include <linux/tracehook.h>
 
 #include <asm/cpu.h>
 #include <asm/delay.h>
@@ -160,21 +161,6 @@ show_regs (struct pt_regs *regs)
                 show_stack(NULL, NULL);
 }
 
-void tsk_clear_notify_resume(struct task_struct *tsk)
-{
-#ifdef CONFIG_PERFMON
-        if (tsk->thread.pfm_needs_checking)
-                return;
-#endif
-        if (test_ti_thread_flag(task_thread_info(tsk), TIF_RESTORE_RSE))
-                return;
-        clear_ti_thread_flag(task_thread_info(tsk), TIF_NOTIFY_RESUME);
-}
-
-/*
- * do_notify_resume_user():
- *      Called from notify_resume_user at entry.S, with interrupts disabled.
- */
 void
 do_notify_resume_user(sigset_t *unused, struct sigscratch *scr, long in_syscall)
 {
@@ -203,6 +189,11 @@ do_notify_resume_user(sigset_t *unused, struct sigscratch *scr, long in_syscall)
                 ia64_do_signal(scr, in_syscall);
         }
 
+        if (test_thread_flag(TIF_NOTIFY_RESUME)) {
+                clear_thread_flag(TIF_NOTIFY_RESUME);
+                tracehook_notify_resume(&scr->pt);
+        }
+
         /* copy user rbs to kernel rbs */
         if (unlikely(test_thread_flag(TIF_RESTORE_RSE))) {
                 local_irq_enable();     /* force interrupt enable */
@@ -251,7 +242,6 @@ default_idle (void)
 /* We don't actually take CPU down, just spin without interrupts. */
 static inline void play_dead(void)
 {
-        extern void ia64_cpu_local_tick (void);
         unsigned int this_cpu = smp_processor_id();
 
         /* Ack it */
diff --git a/arch/ia64/kernel/ptrace.c b/arch/ia64/kernel/ptrace.c
index 2a9943b5947f..92c9689b7d97 100644
--- a/arch/ia64/kernel/ptrace.c
+++ b/arch/ia64/kernel/ptrace.c
@@ -22,6 +22,7 @@
 #include <linux/signal.h>
 #include <linux/regset.h>
 #include <linux/elf.h>
+#include <linux/tracehook.h>
 
 #include <asm/pgtable.h>
 #include <asm/processor.h>
@@ -603,7 +604,7 @@ void ia64_ptrace_stop(void)
 {
         if (test_and_set_tsk_thread_flag(current, TIF_RESTORE_RSE))
                 return;
-        tsk_set_notify_resume(current);
+        set_notify_resume(current);
         unw_init_running(do_sync_rbs, ia64_sync_user_rbs);
 }
 
@@ -613,7 +614,6 @@ void ia64_ptrace_stop(void)
 void ia64_sync_krbs(void)
 {
         clear_tsk_thread_flag(current, TIF_RESTORE_RSE);
-        tsk_clear_notify_resume(current);
 
         unw_init_running(do_sync_rbs, ia64_sync_kernel_rbs);
 }
@@ -644,7 +644,7 @@ ptrace_attach_sync_user_rbs (struct task_struct *child)
                 spin_lock_irq(&child->sighand->siglock);
                 if (child->state == TASK_STOPPED &&
                     !test_and_set_tsk_thread_flag(child, TIF_RESTORE_RSE)) {
-                        tsk_set_notify_resume(child);
+                        set_notify_resume(child);
 
                         child->state = TASK_TRACED;
                         stopped = 1;
@@ -1232,37 +1232,16 @@ arch_ptrace (struct task_struct *child, long request, long addr, long data)
 }
 
 
-static void
-syscall_trace (void)
-{
-        /*
-         * The 0x80 provides a way for the tracing parent to
-         * distinguish between a syscall stop and SIGTRAP delivery.
-         */
-        ptrace_notify(SIGTRAP
-                      | ((current->ptrace & PT_TRACESYSGOOD) ? 0x80 : 0));
-
-        /*
-         * This isn't the same as continuing with a signal, but it
-         * will do for normal use.  strace only continues with a
-         * signal if the stopping signal is not SIGTRAP.  -brl
-         */
-        if (current->exit_code) {
-                send_sig(current->exit_code, current, 1);
-                current->exit_code = 0;
-        }
-}
-
 /* "asmlinkage" so the input arguments are preserved... */
 
-asmlinkage void
+asmlinkage long
 syscall_trace_enter (long arg0, long arg1, long arg2, long arg3,
                      long arg4, long arg5, long arg6, long arg7,
                      struct pt_regs regs)
 {
-        if (test_thread_flag(TIF_SYSCALL_TRACE) 
-            && (current->ptrace & PT_PTRACED))
-                syscall_trace();
+        if (test_thread_flag(TIF_SYSCALL_TRACE))
+                if (tracehook_report_syscall_entry(&regs))
+                        return -ENOSYS;
 
         /* copy user rbs to kernel rbs */
         if (test_thread_flag(TIF_RESTORE_RSE))
@@ -1283,6 +1262,7 @@ syscall_trace_enter (long arg0, long arg1, long arg2, long arg3,
                 audit_syscall_entry(arch, syscall, arg0, arg1, arg2, arg3);
         }
 
+        return 0;
 }
 
 /* "asmlinkage" so the input arguments are preserved... */
@@ -1292,6 +1272,8 @@ syscall_trace_leave (long arg0, long arg1, long arg2, long arg3,
                      long arg4, long arg5, long arg6, long arg7,
                      struct pt_regs regs)
 {
+        int step;
+
         if (unlikely(current->audit_context)) {
                 int success = AUDITSC_RESULT(regs.r10);
                 long result = regs.r8;
@@ -1301,10 +1283,9 @@ syscall_trace_leave (long arg0, long arg1, long arg2, long arg3,
                 audit_syscall_exit(success, result);
         }
 
-        if ((test_thread_flag(TIF_SYSCALL_TRACE)
-            || test_thread_flag(TIF_SINGLESTEP))
-            && (current->ptrace & PT_PTRACED))
-                syscall_trace();
+        step = test_thread_flag(TIF_SINGLESTEP);
+        if (step || test_thread_flag(TIF_SYSCALL_TRACE))
+                tracehook_report_syscall_exit(&regs, step);
 
         /* copy user rbs to kernel rbs */
         if (test_thread_flag(TIF_RESTORE_RSE))
@@ -1940,7 +1921,7 @@ gpregs_writeback(struct task_struct *target,
 {
         if (test_and_set_tsk_thread_flag(target, TIF_RESTORE_RSE))
                 return 0;
-        tsk_set_notify_resume(target);
+        set_notify_resume(target);
         return do_regset_call(do_gpregs_writeback, target, regset, 0, 0,
                 NULL, NULL);
 }
@@ -2199,3 +2180,68 @@ const struct user_regset_view *task_user_regset_view(struct task_struct *tsk)
 #endif
         return &user_ia64_view;
 }
+
+struct syscall_get_set_args {
+        unsigned int i;
+        unsigned int n;
+        unsigned long *args;
+        struct pt_regs *regs;
+        int rw;
+};
+
+static void syscall_get_set_args_cb(struct unw_frame_info *info, void *data)
+{
+        struct syscall_get_set_args *args = data;
+        struct pt_regs *pt = args->regs;
+        unsigned long *krbs, cfm, ndirty;
+        int i, count;
+
+        if (unw_unwind_to_user(info) < 0)
+                return;
+
+        cfm = pt->cr_ifs;
+        krbs = (unsigned long *)info->task + IA64_RBS_OFFSET/8;
+        ndirty = ia64_rse_num_regs(krbs, krbs + (pt->loadrs >> 19));
+
+        count = 0;
+        if (in_syscall(pt))
+                count = min_t(int, args->n, cfm & 0x7f);
+
+        for (i = 0; i < count; i++) {
+                if (args->rw)
+                        *ia64_rse_skip_regs(krbs, ndirty + i + args->i) =
+                                args->args[i];
+                else
+                        args->args[i] = *ia64_rse_skip_regs(krbs,
+                                ndirty + i + args->i);
+        }
+
+        if (!args->rw) {
+                while (i < args->n) {
+                        args->args[i] = 0;
+                        i++;
+                }
+        }
+}
+
+void ia64_syscall_get_set_arguments(struct task_struct *task,
+        struct pt_regs *regs, unsigned int i, unsigned int n,
+        unsigned long *args, int rw)
+{
+        struct syscall_get_set_args data = {
+                .i = i,
+                .n = n,
+                .args = args,
+                .regs = regs,
+                .rw = rw,
+        };
+
+        if (task == current)
+                unw_init_running(syscall_get_set_args_cb, &data);
+        else {
+                struct unw_frame_info ufi;
+                memset(&ufi, 0, sizeof(ufi));
+                unw_init_from_blocked_task(&ufi, task);
+                syscall_get_set_args_cb(&ufi, &data);
+        }
+}
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index 916ba898237f..ae7911702bf8 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -116,6 +116,13 @@ unsigned int num_io_spaces;
  */
 #define I_CACHE_STRIDE_SHIFT    5       /* Safest way to go: 32 bytes by 32 bytes */
 unsigned long ia64_i_cache_stride_shift = ~0;
+/*
+ * "clflush_cache_range()" needs to know what processor dependent stride size to
+ * use when it flushes cache lines including both d-cache and i-cache.
+ */
+/* Safest way to go: 32 bytes by 32 bytes */
+#define CACHE_STRIDE_SHIFT      5
+unsigned long ia64_cache_stride_shift = ~0;
 
 /*
  * The merge_mask variable needs to be set to (max(iommu_page_size(iommu)) - 1).  This
@@ -852,13 +859,14 @@ setup_per_cpu_areas (void)
 }
 
 /*
- * Calculate the max. cache line size.
+ * Do the following calculations:
  *
- * In addition, the minimum of the i-cache stride sizes is calculated for
- * "flush_icache_range()".
+ * 1. the max. cache line size.
+ * 2. the minimum of the i-cache stride sizes for "flush_icache_range()".
+ * 3. the minimum of the cache stride sizes for "clflush_cache_range()".
  */
 static void __cpuinit
-get_max_cacheline_size (void)
+get_cache_info(void)
 {
         unsigned long line_size, max = 1;
         u64 l, levels, unique_caches;
@@ -872,12 +880,14 @@ get_max_cacheline_size (void)
                 max = SMP_CACHE_BYTES;
                 /* Safest setup for "flush_icache_range()" */
                 ia64_i_cache_stride_shift = I_CACHE_STRIDE_SHIFT;
+                /* Safest setup for "clflush_cache_range()" */
+                ia64_cache_stride_shift = CACHE_STRIDE_SHIFT;
                 goto out;
         }
 
         for (l = 0; l < levels; ++l) {
-                status = ia64_pal_cache_config_info(l, /* cache_type (data_or_unified)= */ 2,
-                                                    &cci);
+                /* cache_type (data_or_unified)=2 */
+                status = ia64_pal_cache_config_info(l, 2, &cci);
                 if (status != 0) {
                         printk(KERN_ERR
                                "%s: ia64_pal_cache_config_info(l=%lu, 2) failed (status=%ld)\n",
@@ -885,15 +895,21 @@ get_max_cacheline_size (void)
                         max = SMP_CACHE_BYTES;
                         /* The safest setup for "flush_icache_range()" */
                         cci.pcci_stride = I_CACHE_STRIDE_SHIFT;
+                        /* The safest setup for "clflush_cache_range()" */
+                        ia64_cache_stride_shift = CACHE_STRIDE_SHIFT;
                         cci.pcci_unified = 1;
+                } else {
+                        if (cci.pcci_stride < ia64_cache_stride_shift)
+                                ia64_cache_stride_shift = cci.pcci_stride;
+
+                        line_size = 1 << cci.pcci_line_size;
+                        if (line_size > max)
+                                max = line_size;
                 }
-                line_size = 1 << cci.pcci_line_size;
-                if (line_size > max)
-                        max = line_size;
+
                 if (!cci.pcci_unified) {
-                        status = ia64_pal_cache_config_info(l,
-                                                    /* cache_type (instruction)= */ 1,
-                                                    &cci);
+                        /* cache_type (instruction)=1*/
+                        status = ia64_pal_cache_config_info(l, 1, &cci);
                         if (status != 0) {
                                 printk(KERN_ERR
                                 "%s: ia64_pal_cache_config_info(l=%lu, 1) failed (status=%ld)\n",
@@ -947,7 +963,7 @@ cpu_init (void)
         }
 #endif
 
-        get_max_cacheline_size();
+        get_cache_info();
 
         /*
          * We can't pass "local_cpu_data" to identify_cpu() because we haven't called
diff --git a/arch/ia64/kernel/signal.c b/arch/ia64/kernel/signal.c
index 19c5a78636fc..e12500a9c443 100644
--- a/arch/ia64/kernel/signal.c
+++ b/arch/ia64/kernel/signal.c
@@ -11,6 +11,7 @@
 #include <linux/kernel.h>
 #include <linux/mm.h>
 #include <linux/ptrace.h>
+#include <linux/tracehook.h>
 #include <linux/sched.h>
 #include <linux/signal.h>
 #include <linux/smp.h>
@@ -439,6 +440,13 @@ handle_signal (unsigned long sig, struct k_sigaction *ka, siginfo_t *info, sigse
                 sigaddset(&current->blocked, sig);
         recalc_sigpending();
         spin_unlock_irq(&current->sighand->siglock);
+
+        /*
+         * Let tracing know that we've done the handler setup.
+         */
+        tracehook_signal_handler(sig, info, ka, &scr->pt,
+                                 test_thread_flag(TIF_SINGLESTEP));
+
         return 1;
 }
 
diff --git a/arch/ia64/lib/flush.S b/arch/ia64/lib/flush.S
index 2a0d27f2f21b..1d8c88860063 100644
--- a/arch/ia64/lib/flush.S
+++ b/arch/ia64/lib/flush.S
@@ -60,3 +60,58 @@ GLOBAL_ENTRY(flush_icache_range)
         mov     ar.lc=r3                // restore ar.lc
         br.ret.sptk.many rp
 END(flush_icache_range)
+
+        /*
+         * clflush_cache_range(start,size)
+         *
+         *      Flush cache lines from start to start+size-1.
+         *
+         *      Must deal with range from start to start+size-1 but nothing else
+         *      (need to be careful not to touch addresses that may be
+         *      unmapped).
+         *
+         *      Note: "in0" and "in1" are preserved for debugging purposes.
+         */
+        .section .kprobes.text,"ax"
+GLOBAL_ENTRY(clflush_cache_range)
+
+        .prologue
+        alloc   r2=ar.pfs,2,0,0,0
+        movl    r3=ia64_cache_stride_shift
+        mov     r21=1
+        add     r22=in1,in0
+        ;;
+        ld8     r20=[r3]                // r20: stride shift
+        sub     r22=r22,r0,1            // last byte address
+        ;;
+        shr.u   r23=in0,r20             // start / (stride size)
+        shr.u   r22=r22,r20             // (last byte address) / (stride size)
+        shl     r21=r21,r20             // r21: stride size of the i-cache(s)
+        ;;
+        sub     r8=r22,r23              // number of strides - 1
+        shl     r24=r23,r20             // r24: addresses for "fc" =
+                                        //      "start" rounded down to stride
+                                        //      boundary
+        .save   ar.lc,r3
+        mov     r3=ar.lc                // save ar.lc
+        ;;
+
+        .body
+        mov     ar.lc=r8
+        ;;
+        /*
+         * 32 byte aligned loop, even number of (actually 2) bundles
+         */
+.Loop_fc:
+        fc      r24             // issuable on M0 only
+        add     r24=r21,r24     // we flush "stride size" bytes per iteration
+        nop.i   0
+        br.cloop.sptk.few .Loop_fc
+        ;;
+        sync.i
+        ;;
+        srlz.i
+        ;;
+        mov     ar.lc=r3                // restore ar.lc
+        br.ret.sptk.many rp
+END(clflush_cache_range)
diff --git a/arch/ia64/mm/tlb.c b/arch/ia64/mm/tlb.c
index 8caf42471f0d..bd9818a36b47 100644
--- a/arch/ia64/mm/tlb.c
+++ b/arch/ia64/mm/tlb.c
@@ -362,9 +362,13 @@ ia64_tlb_init (void)
                 per_cpu(ia64_tr_num, cpu) =
                                 vm_info_1.pal_vm_info_1_s.max_dtr_entry+1;
         if (per_cpu(ia64_tr_num, cpu) > IA64_TR_ALLOC_MAX) {
+                static int justonce = 1;
                 per_cpu(ia64_tr_num, cpu) = IA64_TR_ALLOC_MAX;
-                printk(KERN_DEBUG "TR register number exceeds IA64_TR_ALLOC_MAX!"
-                        "IA64_TR_ALLOC_MAX should be extended\n");
+                if (justonce) {
+                        justonce = 0;
+                        printk(KERN_DEBUG "TR register number exceeds "
+                               "IA64_TR_ALLOC_MAX!\n");
+                }
         }
 }
 
diff --git a/arch/ia64/scripts/pvcheck.sed b/arch/ia64/scripts/pvcheck.sed
new file mode 100644
index 000000000000..ba66ac2e4c60
--- /dev/null
+++ b/arch/ia64/scripts/pvcheck.sed
@@ -0,0 +1,32 @@
+#
+# Checker for paravirtualizations of privileged operations.
+#
+s/ssm.*psr\.ic.*/.warning \"ssm psr.ic should not be used directly\"/g
+s/rsm.*psr\.ic.*/.warning \"rsm psr.ic should not be used directly\"/g
+s/ssm.*psr\.i.*/.warning \"ssm psr.i should not be used directly\"/g
+s/rsm.*psr\.i.*/.warning \"rsm psr.i should not be used directly\"/g
+s/ssm.*psr\.dt.*/.warning \"ssm psr.dt should not be used directly\"/g
+s/rsm.*psr\.dt.*/.warning \"rsm psr.dt should not be used directly\"/g
+s/mov.*=.*cr\.ifa/.warning \"cr.ifa should not used directly\"/g
+s/mov.*=.*cr\.itir/.warning \"cr.itir should not used directly\"/g
+s/mov.*=.*cr\.isr/.warning \"cr.isr should not used directly\"/g
+s/mov.*=.*cr\.iha/.warning \"cr.iha should not used directly\"/g
+s/mov.*=.*cr\.ipsr/.warning \"cr.ipsr should not used directly\"/g
+s/mov.*=.*cr\.iim/.warning \"cr.iim should not used directly\"/g
+s/mov.*=.*cr\.iip/.warning \"cr.iip should not used directly\"/g
+s/mov.*=.*cr\.ivr/.warning \"cr.ivr should not used directly\"/g
+s/mov.*=[^\.]*psr/.warning \"psr should not used directly\"/g   # avoid ar.fpsr
+s/mov.*=.*ar\.eflags/.warning \"ar.eflags should not used directly\"/g
+s/mov.*cr\.ifa.*=.*/.warning \"cr.ifa should not used directly\"/g
+s/mov.*cr\.itir.*=.*/.warning \"cr.itir should not used directly\"/g
+s/mov.*cr\.iha.*=.*/.warning \"cr.iha should not used directly\"/g
+s/mov.*cr\.ipsr.*=.*/.warning \"cr.ipsr should not used directly\"/g
+s/mov.*cr\.ifs.*=.*/.warning \"cr.ifs should not used directly\"/g
+s/mov.*cr\.iip.*=.*/.warning \"cr.iip should not used directly\"/g
+s/mov.*cr\.kr.*=.*/.warning \"cr.kr should not used directly\"/g
+s/mov.*ar\.eflags.*=.*/.warning \"ar.eflags should not used directly\"/g
+s/itc\.i.*/.warning \"itc.i should not be used directly.\"/g
+s/itc\.d.*/.warning \"itc.d should not be used directly.\"/g
+s/bsw\.0/.warning \"bsw.0 should not be used directly.\"/g
+s/bsw\.1/.warning \"bsw.1 should not be used directly.\"/g
+s/ptc\.ga.*/.warning \"ptc.ga should not be used directly.\"/g
diff --git a/arch/ia64/xen/Kconfig b/arch/ia64/xen/Kconfig
new file mode 100644
index 000000000000..f1683a20275b
--- /dev/null
+++ b/arch/ia64/xen/Kconfig
@@ -0,0 +1,26 @@
+#
+# This Kconfig describes xen/ia64 options
+#
+
+config XEN
+        bool "Xen hypervisor support"
+        default y
+        depends on PARAVIRT && MCKINLEY && IA64_PAGE_SIZE_16KB && EXPERIMENTAL
+        select XEN_XENCOMM
+        select NO_IDLE_HZ
+
+        # those are required to save/restore.
+        select ARCH_SUSPEND_POSSIBLE
+        select SUSPEND
+        select PM_SLEEP
+        help
+          Enable Xen hypervisor support.  Resulting kernel runs
+          both as a guest OS on Xen and natively on hardware.
+
+config XEN_XENCOMM
+        depends on XEN
+        bool
+
+config NO_IDLE_HZ
+        depends on XEN
+        bool
diff --git a/arch/ia64/xen/Makefile b/arch/ia64/xen/Makefile
new file mode 100644
index 000000000000..0ad0224693d9
--- /dev/null
+++ b/arch/ia64/xen/Makefile
@@ -0,0 +1,22 @@
+#
+# Makefile for Xen components
+#
+
+obj-y := hypercall.o xenivt.o xensetup.o xen_pv_ops.o irq_xen.o \
+         hypervisor.o xencomm.o xcom_hcall.o grant-table.o time.o suspend.o
+
+obj-$(CONFIG_IA64_GENERIC) += machvec.o
+
+AFLAGS_xenivt.o += -D__IA64_ASM_PARAVIRTUALIZED_XEN
+
+# xen multi compile
+ASM_PARAVIRT_MULTI_COMPILE_SRCS = ivt.S entry.S
+ASM_PARAVIRT_OBJS = $(addprefix xen-,$(ASM_PARAVIRT_MULTI_COMPILE_SRCS:.S=.o))
+obj-y += $(ASM_PARAVIRT_OBJS)
+define paravirtualized_xen
+AFLAGS_$(1) += -D__IA64_ASM_PARAVIRTUALIZED_XEN
+endef
+$(foreach o,$(ASM_PARAVIRT_OBJS),$(eval $(call paravirtualized_xen,$(o))))
+
+$(obj)/xen-%.o: $(src)/../kernel/%.S FORCE
+        $(call if_changed_dep,as_o_S)
diff --git a/arch/ia64/xen/grant-table.c b/arch/ia64/xen/grant-table.c
new file mode 100644
index 000000000000..777dd9a9108b
--- /dev/null
+++ b/arch/ia64/xen/grant-table.c
@@ -0,0 +1,155 @@
+/******************************************************************************
+ * arch/ia64/xen/grant-table.c
+ *
+ * Copyright (c) 2006 Isaku Yamahata <yamahata at valinux co jp>
+ *                    VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/vmalloc.h>
+#include <linux/mm.h>
+
+#include <xen/interface/xen.h>
+#include <xen/interface/memory.h>
+#include <xen/grant_table.h>
+
+#include <asm/xen/hypervisor.h>
+
+struct vm_struct *xen_alloc_vm_area(unsigned long size)
+{
+        int order;
+        unsigned long virt;
+        unsigned long nr_pages;
+        struct vm_struct *area;
+
+        order = get_order(size);
+        virt = __get_free_pages(GFP_KERNEL, order);
+        if (virt == 0)
+                goto err0;
+        nr_pages = 1 << order;
+        scrub_pages(virt, nr_pages);
+
+        area = kmalloc(sizeof(*area), GFP_KERNEL);
+        if (area == NULL)
+                goto err1;
+
+        area->flags = VM_IOREMAP;
+        area->addr = (void *)virt;
+        area->size = size;
+        area->pages = NULL;
+        area->nr_pages = nr_pages;
+        area->phys_addr = 0;    /* xenbus_map_ring_valloc uses this field!  */
+
+        return area;
+
+err1:
+        free_pages(virt, order);
+err0:
+        return NULL;
+}
+EXPORT_SYMBOL_GPL(xen_alloc_vm_area);
+
+void xen_free_vm_area(struct vm_struct *area)
+{
+        unsigned int order = get_order(area->size);
+        unsigned long i;
+        unsigned long phys_addr = __pa(area->addr);
+
+        /* This area is used for foreign page mappping.
+         * So underlying machine page may not be assigned. */
+        for (i = 0; i < (1 << order); i++) {
+                unsigned long ret;
+                unsigned long gpfn = (phys_addr >> PAGE_SHIFT) + i;
+                struct xen_memory_reservation reservation = {
+                        .nr_extents   = 1,
+                        .address_bits = 0,
+                        .extent_order = 0,
+                        .domid        = DOMID_SELF
+                };
+                set_xen_guest_handle(reservation.extent_start, &gpfn);
+                ret = HYPERVISOR_memory_op(XENMEM_populate_physmap,
+                                           &reservation);
+                BUG_ON(ret != 1);
+        }
+        free_pages((unsigned long)area->addr, order);
+        kfree(area);
+}
+EXPORT_SYMBOL_GPL(xen_free_vm_area);
+
+
+/****************************************************************************
+ * grant table hack
+ * cmd: GNTTABOP_xxx
+ */
+
+int arch_gnttab_map_shared(unsigned long *frames, unsigned long nr_gframes,
+                           unsigned long max_nr_gframes,
+                           struct grant_entry **__shared)
+{
+        *__shared = __va(frames[0] << PAGE_SHIFT);
+        return 0;
+}
+
+void arch_gnttab_unmap_shared(struct grant_entry *shared,
+                              unsigned long nr_gframes)
+{
+        /* nothing */
+}
+
+static void
+gnttab_map_grant_ref_pre(struct gnttab_map_grant_ref *uop)
+{
+        uint32_t flags;
+
+        flags = uop->flags;
+
+        if (flags & GNTMAP_host_map) {
+                if (flags & GNTMAP_application_map) {
+                        printk(KERN_DEBUG
+                               "GNTMAP_application_map is not supported yet: "
+                               "flags 0x%x\n", flags);
+                        BUG();
+                }
+                if (flags & GNTMAP_contains_pte) {
+                        printk(KERN_DEBUG
+                               "GNTMAP_contains_pte is not supported yet: "
+                               "flags 0x%x\n", flags);
+                        BUG();
+                }
+        } else if (flags & GNTMAP_device_map) {
+                printk("GNTMAP_device_map is not supported yet 0x%x\n", flags);
+                BUG();  /* not yet. actually this flag is not used. */
+        } else {
+                BUG();
+        }
+}
+
+int
+HYPERVISOR_grant_table_op(unsigned int cmd, void *uop, unsigned int count)
+{
+        if (cmd == GNTTABOP_map_grant_ref) {
+                unsigned int i;
+                for (i = 0; i < count; i++) {
+                        gnttab_map_grant_ref_pre(
+                                (struct gnttab_map_grant_ref *)uop + i);
+                }
+        }
+        return xencomm_hypercall_grant_table_op(cmd, uop, count);
+}
+
+EXPORT_SYMBOL(HYPERVISOR_grant_table_op);
diff --git a/arch/ia64/xen/hypercall.S b/arch/ia64/xen/hypercall.S
new file mode 100644
index 000000000000..d4ff0b9e79f1
--- /dev/null
+++ b/arch/ia64/xen/hypercall.S
@@ -0,0 +1,91 @@
+/*
+ * Support routines for Xen hypercalls
+ *
+ * Copyright (C) 2005 Dan Magenheimer <dan.magenheimer@hp.com>
+ * Copyright (C) 2008 Yaozu (Eddie) Dong <eddie.dong@intel.com>
+ */
+
+#include <asm/asmmacro.h>
+#include <asm/intrinsics.h>
+#include <asm/xen/privop.h>
+
+/*
+ * Hypercalls without parameter.
+ */
+#define __HCALL0(name,hcall)            \
+        GLOBAL_ENTRY(name);             \
+        break   hcall;                  \
+        br.ret.sptk.many rp;            \
+        END(name)
+
+/*
+ * Hypercalls with 1 parameter.
+ */
+#define __HCALL1(name,hcall)            \
+        GLOBAL_ENTRY(name);             \
+        mov r8=r32;                     \
+        break   hcall;                  \
+        br.ret.sptk.many rp;            \
+        END(name)
+
+/*
+ * Hypercalls with 2 parameters.
+ */
+#define __HCALL2(name,hcall)            \
+        GLOBAL_ENTRY(name);             \
+        mov r8=r32;                     \
+        mov r9=r33;                     \
+        break   hcall;                  \
+        br.ret.sptk.many rp;            \
+        END(name)
+
+__HCALL0(xen_get_psr, HYPERPRIVOP_GET_PSR)
+__HCALL0(xen_get_ivr, HYPERPRIVOP_GET_IVR)
+__HCALL0(xen_get_tpr, HYPERPRIVOP_GET_TPR)
+__HCALL0(xen_hyper_ssm_i, HYPERPRIVOP_SSM_I)
+
+__HCALL1(xen_set_tpr, HYPERPRIVOP_SET_TPR)
+__HCALL1(xen_eoi, HYPERPRIVOP_EOI)
+__HCALL1(xen_thash, HYPERPRIVOP_THASH)
+__HCALL1(xen_set_itm, HYPERPRIVOP_SET_ITM)
+__HCALL1(xen_get_rr, HYPERPRIVOP_GET_RR)
+__HCALL1(xen_fc, HYPERPRIVOP_FC)
+__HCALL1(xen_get_cpuid, HYPERPRIVOP_GET_CPUID)
+__HCALL1(xen_get_pmd, HYPERPRIVOP_GET_PMD)
+
+__HCALL2(xen_ptcga, HYPERPRIVOP_PTC_GA)
+__HCALL2(xen_set_rr, HYPERPRIVOP_SET_RR)
+__HCALL2(xen_set_kr, HYPERPRIVOP_SET_KR)
+
+#ifdef CONFIG_IA32_SUPPORT
+__HCALL1(xen_get_eflag, HYPERPRIVOP_GET_EFLAG)
+__HCALL1(xen_set_eflag, HYPERPRIVOP_SET_EFLAG)  // refer SDM vol1 3.1.8
+#endif /* CONFIG_IA32_SUPPORT */
+
+GLOBAL_ENTRY(xen_set_rr0_to_rr4)
+        mov r8=r32
+        mov r9=r33
+        mov r10=r34
+        mov r11=r35
+        mov r14=r36
+        XEN_HYPER_SET_RR0_TO_RR4
+        br.ret.sptk.many rp
+        ;;
+END(xen_set_rr0_to_rr4)
+
+GLOBAL_ENTRY(xen_send_ipi)
+        mov r14=r32
+        mov r15=r33
+        mov r2=0x400
+        break 0x1000
+        ;;
+        br.ret.sptk.many rp
+        ;;
+END(xen_send_ipi)
+
+GLOBAL_ENTRY(__hypercall)
+        mov r2=r37
+        break 0x1000
+        br.ret.sptk.many b0
+        ;;
+END(__hypercall)
diff --git a/arch/ia64/xen/hypervisor.c b/arch/ia64/xen/hypervisor.c
new file mode 100644
index 000000000000..cac4d97c0b5a
--- /dev/null
+++ b/arch/ia64/xen/hypervisor.c
@@ -0,0 +1,96 @@
+/******************************************************************************
+ * arch/ia64/xen/hypervisor.c
+ *
+ * Copyright (c) 2006 Isaku Yamahata <yamahata at valinux co jp>
+ *                    VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include <linux/efi.h>
+#include <asm/xen/hypervisor.h>
+#include <asm/xen/privop.h>
+
+#include "irq_xen.h"
+
+struct shared_info *HYPERVISOR_shared_info __read_mostly =
+        (struct shared_info *)XSI_BASE;
+EXPORT_SYMBOL(HYPERVISOR_shared_info);
+
+DEFINE_PER_CPU(struct vcpu_info *, xen_vcpu);
+
+struct start_info *xen_start_info;
+EXPORT_SYMBOL(xen_start_info);
+
+EXPORT_SYMBOL(xen_domain_type);
+
+EXPORT_SYMBOL(__hypercall);
+
+/* Stolen from arch/x86/xen/enlighten.c */
+/*
+ * Flag to determine whether vcpu info placement is available on all
+ * VCPUs.  We assume it is to start with, and then set it to zero on
+ * the first failure.  This is because it can succeed on some VCPUs
+ * and not others, since it can involve hypervisor memory allocation,
+ * or because the guest failed to guarantee all the appropriate
+ * constraints on all VCPUs (ie buffer can't cross a page boundary).
+ *
+ * Note that any particular CPU may be using a placed vcpu structure,
+ * but we can only optimise if the all are.
+ *
+ * 0: not available, 1: available
+ */
+
+static void __init xen_vcpu_setup(int cpu)
+{
+        /*
+         * WARNING:
+         * before changing MAX_VIRT_CPUS,
+         * check that shared_info fits on a page
+         */
+        BUILD_BUG_ON(sizeof(struct shared_info) > PAGE_SIZE);
+        per_cpu(xen_vcpu, cpu) = &HYPERVISOR_shared_info->vcpu_info[cpu];
+}
+
+void __init xen_setup_vcpu_info_placement(void)
+{
+        int cpu;
+
+        for_each_possible_cpu(cpu)
+                xen_vcpu_setup(cpu);
+}
+
+void __cpuinit
+xen_cpu_init(void)
+{
+        xen_smp_intr_init();
+}
+
+/**************************************************************************
+ * opt feature
+ */
+void
+xen_ia64_enable_opt_feature(void)
+{
+        /* Enable region 7 identity map optimizations in Xen */
+        struct xen_ia64_opt_feature optf;
+
+        optf.cmd = XEN_IA64_OPTF_IDENT_MAP_REG7;
+        optf.on = XEN_IA64_OPTF_ON;
+        optf.pgprot = pgprot_val(PAGE_KERNEL);
+        optf.key = 0;   /* No key on linux. */
+        HYPERVISOR_opt_feature(&optf);
+}
diff --git a/arch/ia64/xen/irq_xen.c b/arch/ia64/xen/irq_xen.c
new file mode 100644
index 000000000000..af93aadb68bb
--- /dev/null
+++ b/arch/ia64/xen/irq_xen.c
@@ -0,0 +1,435 @@
+/******************************************************************************
+ * arch/ia64/xen/irq_xen.c
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ *                    VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include <linux/cpu.h>
+
+#include <xen/interface/xen.h>
+#include <xen/interface/callback.h>
+#include <xen/events.h>
+
+#include <asm/xen/privop.h>
+
+#include "irq_xen.h"
+
+/***************************************************************************
+ * pv_irq_ops
+ * irq operations
+ */
+
+static int
+xen_assign_irq_vector(int irq)
+{
+        struct physdev_irq irq_op;
+
+        irq_op.irq = irq;
+        if (HYPERVISOR_physdev_op(PHYSDEVOP_alloc_irq_vector, &irq_op))
+                return -ENOSPC;
+
+        return irq_op.vector;
+}
+
+static void
+xen_free_irq_vector(int vector)
+{
+        struct physdev_irq irq_op;
+
+        if (vector < IA64_FIRST_DEVICE_VECTOR ||
+            vector > IA64_LAST_DEVICE_VECTOR)
+                return;
+
+        irq_op.vector = vector;
+        if (HYPERVISOR_physdev_op(PHYSDEVOP_free_irq_vector, &irq_op))
+                printk(KERN_WARNING "%s: xen_free_irq_vecotr fail vector=%d\n",
+                       __func__, vector);
+}
+
+
+static DEFINE_PER_CPU(int, timer_irq) = -1;
+static DEFINE_PER_CPU(int, ipi_irq) = -1;
+static DEFINE_PER_CPU(int, resched_irq) = -1;
+static DEFINE_PER_CPU(int, cmc_irq) = -1;
+static DEFINE_PER_CPU(int, cmcp_irq) = -1;
+static DEFINE_PER_CPU(int, cpep_irq) = -1;
+#define NAME_SIZE       15
+static DEFINE_PER_CPU(char[NAME_SIZE], timer_name);
+static DEFINE_PER_CPU(char[NAME_SIZE], ipi_name);
+static DEFINE_PER_CPU(char[NAME_SIZE], resched_name);
+static DEFINE_PER_CPU(char[NAME_SIZE], cmc_name);
+static DEFINE_PER_CPU(char[NAME_SIZE], cmcp_name);
+static DEFINE_PER_CPU(char[NAME_SIZE], cpep_name);
+#undef NAME_SIZE
+
+struct saved_irq {
+        unsigned int irq;
+        struct irqaction *action;
+};
+/* 16 should be far optimistic value, since only several percpu irqs
+ * are registered early.
+ */
+#define MAX_LATE_IRQ    16
+static struct saved_irq saved_percpu_irqs[MAX_LATE_IRQ];
+static unsigned short late_irq_cnt;
+static unsigned short saved_irq_cnt;
+static int xen_slab_ready;
+
+#ifdef CONFIG_SMP
+/* Dummy stub. Though we may check XEN_RESCHEDULE_VECTOR before __do_IRQ,
+ * it ends up to issue several memory accesses upon percpu data and
+ * thus adds unnecessary traffic to other paths.
+ */
+static irqreturn_t
+xen_dummy_handler(int irq, void *dev_id)
+{
+
+        return IRQ_HANDLED;
+}
+
+static struct irqaction xen_ipi_irqaction = {
+        .handler =      handle_IPI,
+        .flags =        IRQF_DISABLED,
+        .name =         "IPI"
+};
+
+static struct irqaction xen_resched_irqaction = {
+        .handler =      xen_dummy_handler,
+        .flags =        IRQF_DISABLED,
+        .name =         "resched"
+};
+
+static struct irqaction xen_tlb_irqaction = {
+        .handler =      xen_dummy_handler,
+        .flags =        IRQF_DISABLED,
+        .name =         "tlb_flush"
+};
+#endif
+
+/*
+ * This is xen version percpu irq registration, which needs bind
+ * to xen specific evtchn sub-system. One trick here is that xen
+ * evtchn binding interface depends on kmalloc because related
+ * port needs to be freed at device/cpu down. So we cache the
+ * registration on BSP before slab is ready and then deal them
+ * at later point. For rest instances happening after slab ready,
+ * we hook them to xen evtchn immediately.
+ *
+ * FIXME: MCA is not supported by far, and thus "nomca" boot param is
+ * required.
+ */
+static void
+__xen_register_percpu_irq(unsigned int cpu, unsigned int vec,
+                        struct irqaction *action, int save)
+{
+        irq_desc_t *desc;
+        int irq = 0;
+
+        if (xen_slab_ready) {
+                switch (vec) {
+                case IA64_TIMER_VECTOR:
+                        snprintf(per_cpu(timer_name, cpu),
+                                 sizeof(per_cpu(timer_name, cpu)),
+                                 "%s%d", action->name, cpu);
+                        irq = bind_virq_to_irqhandler(VIRQ_ITC, cpu,
+                                action->handler, action->flags,
+                                per_cpu(timer_name, cpu), action->dev_id);
+                        per_cpu(timer_irq, cpu) = irq;
+                        break;
+                case IA64_IPI_RESCHEDULE:
+                        snprintf(per_cpu(resched_name, cpu),
+                                 sizeof(per_cpu(resched_name, cpu)),
+                                 "%s%d", action->name, cpu);
+                        irq = bind_ipi_to_irqhandler(XEN_RESCHEDULE_VECTOR, cpu,
+                                action->handler, action->flags,
+                                per_cpu(resched_name, cpu), action->dev_id);
+                        per_cpu(resched_irq, cpu) = irq;
+                        break;
+                case IA64_IPI_VECTOR:
+                        snprintf(per_cpu(ipi_name, cpu),
+                                 sizeof(per_cpu(ipi_name, cpu)),
+                                 "%s%d", action->name, cpu);
+                        irq = bind_ipi_to_irqhandler(XEN_IPI_VECTOR, cpu,
+                                action->handler, action->flags,
+                                per_cpu(ipi_name, cpu), action->dev_id);
+                        per_cpu(ipi_irq, cpu) = irq;
+                        break;
+                case IA64_CMC_VECTOR:
+                        snprintf(per_cpu(cmc_name, cpu),
+                                 sizeof(per_cpu(cmc_name, cpu)),
+                                 "%s%d", action->name, cpu);
+                        irq = bind_virq_to_irqhandler(VIRQ_MCA_CMC, cpu,
+                                                      action->handler,
+                                                      action->flags,
+                                                      per_cpu(cmc_name, cpu),
+                                                      action->dev_id);
+                        per_cpu(cmc_irq, cpu) = irq;
+                        break;
+                case IA64_CMCP_VECTOR:
+                        snprintf(per_cpu(cmcp_name, cpu),
+                                 sizeof(per_cpu(cmcp_name, cpu)),
+                                 "%s%d", action->name, cpu);
+                        irq = bind_ipi_to_irqhandler(XEN_CMCP_VECTOR, cpu,
+                                                     action->handler,
+                                                     action->flags,
+                                                     per_cpu(cmcp_name, cpu),
+                                                     action->dev_id);
+                        per_cpu(cmcp_irq, cpu) = irq;
+                        break;
+                case IA64_CPEP_VECTOR:
+                        snprintf(per_cpu(cpep_name, cpu),
+                                 sizeof(per_cpu(cpep_name, cpu)),
+                                 "%s%d", action->name, cpu);
+                        irq = bind_ipi_to_irqhandler(XEN_CPEP_VECTOR, cpu,
+                                                     action->handler,
+                                                     action->flags,
+                                                     per_cpu(cpep_name, cpu),
+                                                     action->dev_id);
+                        per_cpu(cpep_irq, cpu) = irq;
+                        break;
+                case IA64_CPE_VECTOR:
+                case IA64_MCA_RENDEZ_VECTOR:
+                case IA64_PERFMON_VECTOR:
+                case IA64_MCA_WAKEUP_VECTOR:
+                case IA64_SPURIOUS_INT_VECTOR:
+                        /* No need to complain, these aren't supported. */
+                        break;
+                default:
+                        printk(KERN_WARNING "Percpu irq %d is unsupported "
+                               "by xen!\n", vec);
+                        break;
+                }
+                BUG_ON(irq < 0);
+
+                if (irq > 0) {
+                        /*
+                         * Mark percpu.  Without this, migrate_irqs() will
+                         * mark the interrupt for migrations and trigger it
+                         * on cpu hotplug.
+                         */
+                        desc = irq_desc + irq;
+                        desc->status |= IRQ_PER_CPU;
+                }
+        }
+
+        /* For BSP, we cache registered percpu irqs, and then re-walk
+         * them when initializing APs
+         */
+        if (!cpu && save) {
+                BUG_ON(saved_irq_cnt == MAX_LATE_IRQ);
+                saved_percpu_irqs[saved_irq_cnt].irq = vec;
+                saved_percpu_irqs[saved_irq_cnt].action = action;
+                saved_irq_cnt++;
+                if (!xen_slab_ready)
+                        late_irq_cnt++;
+        }
+}
+
+static void
+xen_register_percpu_irq(ia64_vector vec, struct irqaction *action)
+{
+        __xen_register_percpu_irq(smp_processor_id(), vec, action, 1);
+}
+
+static void
+xen_bind_early_percpu_irq(void)
+{
+        int i;
+
+        xen_slab_ready = 1;
+        /* There's no race when accessing this cached array, since only
+         * BSP will face with such step shortly
+         */
+        for (i = 0; i < late_irq_cnt; i++)
+                __xen_register_percpu_irq(smp_processor_id(),
+                                          saved_percpu_irqs[i].irq,
+                                          saved_percpu_irqs[i].action, 0);
+}
+
+/* FIXME: There's no obvious point to check whether slab is ready. So
+ * a hack is used here by utilizing a late time hook.
+ */
+
+#ifdef CONFIG_HOTPLUG_CPU
+static int __devinit
+unbind_evtchn_callback(struct notifier_block *nfb,
+                       unsigned long action, void *hcpu)
+{
+        unsigned int cpu = (unsigned long)hcpu;
+
+        if (action == CPU_DEAD) {
+                /* Unregister evtchn.  */
+                if (per_cpu(cpep_irq, cpu) >= 0) {
+                        unbind_from_irqhandler(per_cpu(cpep_irq, cpu), NULL);
+                        per_cpu(cpep_irq, cpu) = -1;
+                }
+                if (per_cpu(cmcp_irq, cpu) >= 0) {
+                        unbind_from_irqhandler(per_cpu(cmcp_irq, cpu), NULL);
+                        per_cpu(cmcp_irq, cpu) = -1;
+                }
+                if (per_cpu(cmc_irq, cpu) >= 0) {
+                        unbind_from_irqhandler(per_cpu(cmc_irq, cpu), NULL);
+                        per_cpu(cmc_irq, cpu) = -1;
+                }
+                if (per_cpu(ipi_irq, cpu) >= 0) {
+                        unbind_from_irqhandler(per_cpu(ipi_irq, cpu), NULL);
+                        per_cpu(ipi_irq, cpu) = -1;
+                }
+                if (per_cpu(resched_irq, cpu) >= 0) {
+                        unbind_from_irqhandler(per_cpu(resched_irq, cpu),
+                                                NULL);
+                        per_cpu(resched_irq, cpu) = -1;
+                }
+                if (per_cpu(timer_irq, cpu) >= 0) {
+                        unbind_from_irqhandler(per_cpu(timer_irq, cpu), NULL);
+                        per_cpu(timer_irq, cpu) = -1;
+                }
+        }
+        return NOTIFY_OK;
+}
+
+static struct notifier_block unbind_evtchn_notifier = {
+        .notifier_call = unbind_evtchn_callback,
+        .priority = 0
+};
+#endif
+
+void xen_smp_intr_init_early(unsigned int cpu)
+{
+#ifdef CONFIG_SMP
+        unsigned int i;
+
+        for (i = 0; i < saved_irq_cnt; i++)
+                __xen_register_percpu_irq(cpu, saved_percpu_irqs[i].irq,
+                                          saved_percpu_irqs[i].action, 0);
+#endif
+}
+
+void xen_smp_intr_init(void)
+{
+#ifdef CONFIG_SMP
+        unsigned int cpu = smp_processor_id();
+        struct callback_register event = {
+                .type = CALLBACKTYPE_event,
+                .address = { .ip = (unsigned long)&xen_event_callback },
+        };
+
+        if (cpu == 0) {
+                /* Initialization was already done for boot cpu.  */
+#ifdef CONFIG_HOTPLUG_CPU
+                /* Register the notifier only once.  */
+                register_cpu_notifier(&unbind_evtchn_notifier);
+#endif
+                return;
+        }
+
+        /* This should be piggyback when setup vcpu guest context */
+        BUG_ON(HYPERVISOR_callback_op(CALLBACKOP_register, &event));
+#endif /* CONFIG_SMP */
+}
+
+void __init
+xen_irq_init(void)
+{
+        struct callback_register event = {
+                .type = CALLBACKTYPE_event,
+                .address = { .ip = (unsigned long)&xen_event_callback },
+        };
+
+        xen_init_IRQ();
+        BUG_ON(HYPERVISOR_callback_op(CALLBACKOP_register, &event));
+        late_time_init = xen_bind_early_percpu_irq;
+}
+
+void
+xen_platform_send_ipi(int cpu, int vector, int delivery_mode, int redirect)
+{
+#ifdef CONFIG_SMP
+        /* TODO: we need to call vcpu_up here */
+        if (unlikely(vector == ap_wakeup_vector)) {
+                /* XXX
+                 * This should be in __cpu_up(cpu) in ia64 smpboot.c
+                 * like x86. But don't want to modify it,
+                 * keep it untouched.
+                 */
+                xen_smp_intr_init_early(cpu);
+
+                xen_send_ipi(cpu, vector);
+                /* vcpu_prepare_and_up(cpu); */
+                return;
+        }
+#endif
+
+        switch (vector) {
+        case IA64_IPI_VECTOR:
+                xen_send_IPI_one(cpu, XEN_IPI_VECTOR);
+                break;
+        case IA64_IPI_RESCHEDULE:
+                xen_send_IPI_one(cpu, XEN_RESCHEDULE_VECTOR);
+                break;
+        case IA64_CMCP_VECTOR:
+                xen_send_IPI_one(cpu, XEN_CMCP_VECTOR);
+                break;
+        case IA64_CPEP_VECTOR:
+                xen_send_IPI_one(cpu, XEN_CPEP_VECTOR);
+                break;
+        case IA64_TIMER_VECTOR: {
+                /* this is used only once by check_sal_cache_flush()
+                   at boot time */
+                static int used = 0;
+                if (!used) {
+                        xen_send_ipi(cpu, IA64_TIMER_VECTOR);
+                        used = 1;
+                        break;
+                }
+                /* fallthrough */
+        }
+        default:
+                printk(KERN_WARNING "Unsupported IPI type 0x%x\n",
+                       vector);
+                notify_remote_via_irq(0); /* defaults to 0 irq */
+                break;
+        }
+}
+
+static void __init
+xen_register_ipi(void)
+{
+#ifdef CONFIG_SMP
+        register_percpu_irq(IA64_IPI_VECTOR, &xen_ipi_irqaction);
+        register_percpu_irq(IA64_IPI_RESCHEDULE, &xen_resched_irqaction);
+        register_percpu_irq(IA64_IPI_LOCAL_TLB_FLUSH, &xen_tlb_irqaction);
+#endif
+}
+
+static void
+xen_resend_irq(unsigned int vector)
+{
+        (void)resend_irq_on_evtchn(vector);
+}
+
+const struct pv_irq_ops xen_irq_ops __initdata = {
+        .register_ipi = xen_register_ipi,
+
+        .assign_irq_vector = xen_assign_irq_vector,
+        .free_irq_vector = xen_free_irq_vector,
+        .register_percpu_irq = xen_register_percpu_irq,
+
+        .resend_irq = xen_resend_irq,
+};
diff --git a/arch/ia64/xen/irq_xen.h b/arch/ia64/xen/irq_xen.h
new file mode 100644
index 000000000000..26110f330c87
--- /dev/null
+++ b/arch/ia64/xen/irq_xen.h
@@ -0,0 +1,34 @@
+/******************************************************************************
+ * arch/ia64/xen/irq_xen.h
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ *                    VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#ifndef IRQ_XEN_H
+#define IRQ_XEN_H
+
+extern void (*late_time_init)(void);
+extern char xen_event_callback;
+void __init xen_init_IRQ(void);
+
+extern const struct pv_irq_ops xen_irq_ops __initdata;
+extern void xen_smp_intr_init(void);
+extern void xen_send_ipi(int cpu, int vec);
+
+#endif /* IRQ_XEN_H */
diff --git a/arch/ia64/xen/machvec.c b/arch/ia64/xen/machvec.c
new file mode 100644
index 000000000000..4ad588a7c279
--- /dev/null
+++ b/arch/ia64/xen/machvec.c
@@ -0,0 +1,4 @@
+#define MACHVEC_PLATFORM_NAME           xen
+#define MACHVEC_PLATFORM_HEADER         <asm/machvec_xen.h>
+#include <asm/machvec_init.h>
+
diff --git a/arch/ia64/xen/suspend.c b/arch/ia64/xen/suspend.c
new file mode 100644
index 000000000000..fd66b048c6fa
--- /dev/null
+++ b/arch/ia64/xen/suspend.c
@@ -0,0 +1,64 @@
+/******************************************************************************
+ * arch/ia64/xen/suspend.c
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ *                    VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * suspend/resume
+ */
+
+#include <xen/xen-ops.h>
+#include <asm/xen/hypervisor.h>
+#include "time.h"
+
+void
+xen_mm_pin_all(void)
+{
+        /* nothing */
+}
+
+void
+xen_mm_unpin_all(void)
+{
+        /* nothing */
+}
+
+void xen_pre_device_suspend(void)
+{
+        /* nothing */
+}
+
+void
+xen_pre_suspend()
+{
+        /* nothing */
+}
+
+void
+xen_post_suspend(int suspend_cancelled)
+{
+        if (suspend_cancelled)
+                return;
+
+        xen_ia64_enable_opt_feature();
+        /* add more if necessary */
+}
+
+void xen_arch_resume(void)
+{
+        xen_timer_resume_on_aps();
+}
diff --git a/arch/ia64/xen/time.c b/arch/ia64/xen/time.c
new file mode 100644
index 000000000000..d15a94c330fb
--- /dev/null
+++ b/arch/ia64/xen/time.c
@@ -0,0 +1,213 @@
+/******************************************************************************
+ * arch/ia64/xen/time.c
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ *                    VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include <linux/delay.h>
+#include <linux/kernel_stat.h>
+#include <linux/posix-timers.h>
+#include <linux/irq.h>
+#include <linux/clocksource.h>
+
+#include <asm/timex.h>
+
+#include <asm/xen/hypervisor.h>
+
+#include <xen/interface/vcpu.h>
+
+#include "../kernel/fsyscall_gtod_data.h"
+
+DEFINE_PER_CPU(struct vcpu_runstate_info, runstate);
+DEFINE_PER_CPU(unsigned long, processed_stolen_time);
+DEFINE_PER_CPU(unsigned long, processed_blocked_time);
+
+/* taken from i386/kernel/time-xen.c */
+static void xen_init_missing_ticks_accounting(int cpu)
+{
+        struct vcpu_register_runstate_memory_area area;
+        struct vcpu_runstate_info *runstate = &per_cpu(runstate, cpu);
+        int rc;
+
+        memset(runstate, 0, sizeof(*runstate));
+
+        area.addr.v = runstate;
+        rc = HYPERVISOR_vcpu_op(VCPUOP_register_runstate_memory_area, cpu,
+                                &area);
+        WARN_ON(rc && rc != -ENOSYS);
+
+        per_cpu(processed_blocked_time, cpu) = runstate->time[RUNSTATE_blocked];
+        per_cpu(processed_stolen_time, cpu) = runstate->time[RUNSTATE_runnable]
+                                            + runstate->time[RUNSTATE_offline];
+}
+
+/*
+ * Runstate accounting
+ */
+/* stolen from arch/x86/xen/time.c */
+static void get_runstate_snapshot(struct vcpu_runstate_info *res)
+{
+        u64 state_time;
+        struct vcpu_runstate_info *state;
+
+        BUG_ON(preemptible());
+
+        state = &__get_cpu_var(runstate);
+
+        /*
+         * The runstate info is always updated by the hypervisor on
+         * the current CPU, so there's no need to use anything
+         * stronger than a compiler barrier when fetching it.
+         */
+        do {
+                state_time = state->state_entry_time;
+                rmb();
+                *res = *state;
+                rmb();
+        } while (state->state_entry_time != state_time);
+}
+
+#define NS_PER_TICK (1000000000LL/HZ)
+
+static unsigned long
+consider_steal_time(unsigned long new_itm)
+{
+        unsigned long stolen, blocked;
+        unsigned long delta_itm = 0, stolentick = 0;
+        int cpu = smp_processor_id();
+        struct vcpu_runstate_info runstate;
+        struct task_struct *p = current;
+
+        get_runstate_snapshot(&runstate);
+
+        /*
+         * Check for vcpu migration effect
+         * In this case, itc value is reversed.
+         * This causes huge stolen value.
+         * This function just checks and reject this effect.
+         */
+        if (!time_after_eq(runstate.time[RUNSTATE_blocked],
+                           per_cpu(processed_blocked_time, cpu)))
+                blocked = 0;
+
+        if (!time_after_eq(runstate.time[RUNSTATE_runnable] +
+                           runstate.time[RUNSTATE_offline],
+                           per_cpu(processed_stolen_time, cpu)))
+                stolen = 0;
+
+        if (!time_after(delta_itm + new_itm, ia64_get_itc()))
+                stolentick = ia64_get_itc() - new_itm;
+
+        do_div(stolentick, NS_PER_TICK);
+        stolentick++;
+
+        do_div(stolen, NS_PER_TICK);
+
+        if (stolen > stolentick)
+                stolen = stolentick;
+
+        stolentick -= stolen;
+        do_div(blocked, NS_PER_TICK);
+
+        if (blocked > stolentick)
+                blocked = stolentick;
+
+        if (stolen > 0 || blocked > 0) {
+                account_steal_time(NULL, jiffies_to_cputime(stolen));
+                account_steal_time(idle_task(cpu), jiffies_to_cputime(blocked));
+                run_local_timers();
+
+                if (rcu_pending(cpu))
+                        rcu_check_callbacks(cpu, user_mode(get_irq_regs()));
+
+                scheduler_tick();
+                run_posix_cpu_timers(p);
+                delta_itm += local_cpu_data->itm_delta * (stolen + blocked);
+
+                if (cpu == time_keeper_id) {
+                        write_seqlock(&xtime_lock);
+                        do_timer(stolen + blocked);
+                        local_cpu_data->itm_next = delta_itm + new_itm;
+                        write_sequnlock(&xtime_lock);
+                } else {
+                        local_cpu_data->itm_next = delta_itm + new_itm;
+                }
+                per_cpu(processed_stolen_time, cpu) += NS_PER_TICK * stolen;
+                per_cpu(processed_blocked_time, cpu) += NS_PER_TICK * blocked;
+        }
+        return delta_itm;
+}
+
+static int xen_do_steal_accounting(unsigned long *new_itm)
+{
+        unsigned long delta_itm;
+        delta_itm = consider_steal_time(*new_itm);
+        *new_itm += delta_itm;
+        if (time_after(*new_itm, ia64_get_itc()) && delta_itm)
+                return 1;
+
+        return 0;
+}
+
+static void xen_itc_jitter_data_reset(void)
+{
+        u64 lcycle, ret;
+
+        do {
+                lcycle = itc_jitter_data.itc_lastcycle;
+                ret = cmpxchg(&itc_jitter_data.itc_lastcycle, lcycle, 0);
+        } while (unlikely(ret != lcycle));
+}
+
+struct pv_time_ops xen_time_ops __initdata = {
+        .init_missing_ticks_accounting  = xen_init_missing_ticks_accounting,
+        .do_steal_accounting            = xen_do_steal_accounting,
+        .clocksource_resume             = xen_itc_jitter_data_reset,
+};
+
+/* Called after suspend, to resume time.  */
+static void xen_local_tick_resume(void)
+{
+        /* Just trigger a tick.  */
+        ia64_cpu_local_tick();
+        touch_softlockup_watchdog();
+}
+
+void
+xen_timer_resume(void)
+{
+        unsigned int cpu;
+
+        xen_local_tick_resume();
+
+        for_each_online_cpu(cpu)
+                xen_init_missing_ticks_accounting(cpu);
+}
+
+static void ia64_cpu_local_tick_fn(void *unused)
+{
+        xen_local_tick_resume();
+        xen_init_missing_ticks_accounting(smp_processor_id());
+}
+
+void
+xen_timer_resume_on_aps(void)
+{
+        smp_call_function(&ia64_cpu_local_tick_fn, NULL, 1);
+}
diff --git a/arch/ia64/xen/time.h b/arch/ia64/xen/time.h
new file mode 100644
index 000000000000..f98d7e1a42f0
--- /dev/null
+++ b/arch/ia64/xen/time.h
@@ -0,0 +1,24 @@
+/******************************************************************************
+ * arch/ia64/xen/time.h
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ *                    VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+extern struct pv_time_ops xen_time_ops __initdata;
+void xen_timer_resume_on_aps(void);
diff --git a/arch/ia64/xen/xcom_hcall.c b/arch/ia64/xen/xcom_hcall.c
new file mode 100644
index 000000000000..ccaf7431f7c8
--- /dev/null
+++ b/arch/ia64/xen/xcom_hcall.c
@@ -0,0 +1,441 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ *          Tristan Gingold <tristan.gingold@bull.net>
+ *
+ *          Copyright (c) 2007
+ *          Isaku Yamahata <yamahata at valinux co jp>
+ *                          VA Linux Systems Japan K.K.
+ *          consolidate mini and inline version.
+ */
+
+#include <linux/module.h>
+#include <xen/interface/xen.h>
+#include <xen/interface/memory.h>
+#include <xen/interface/grant_table.h>
+#include <xen/interface/callback.h>
+#include <xen/interface/vcpu.h>
+#include <asm/xen/hypervisor.h>
+#include <asm/xen/xencomm.h>
+
+/* Xencomm notes:
+ * This file defines hypercalls to be used by xencomm.  The hypercalls simply
+ * create inlines or mini descriptors for pointers and then call the raw arch
+ * hypercall xencomm_arch_hypercall_XXX
+ *
+ * If the arch wants to directly use these hypercalls, simply define macros
+ * in asm/xen/hypercall.h, eg:
+ *  #define HYPERVISOR_sched_op xencomm_hypercall_sched_op
+ *
+ * The arch may also define HYPERVISOR_xxx as a function and do more operations
+ * before/after doing the hypercall.
+ *
+ * Note: because only inline or mini descriptors are created these functions
+ * must only be called with in kernel memory parameters.
+ */
+
+int
+xencomm_hypercall_console_io(int cmd, int count, char *str)
+{
+        /* xen early printk uses console io hypercall before
+         * xencomm initialization. In that case, we just ignore it.
+         */
+        if (!xencomm_is_initialized())
+                return 0;
+
+        return xencomm_arch_hypercall_console_io
+                (cmd, count, xencomm_map_no_alloc(str, count));
+}
+EXPORT_SYMBOL_GPL(xencomm_hypercall_console_io);
+
+int
+xencomm_hypercall_event_channel_op(int cmd, void *op)
+{
+        struct xencomm_handle *desc;
+        desc = xencomm_map_no_alloc(op, sizeof(struct evtchn_op));
+        if (desc == NULL)
+                return -EINVAL;
+
+        return xencomm_arch_hypercall_event_channel_op(cmd, desc);
+}
+EXPORT_SYMBOL_GPL(xencomm_hypercall_event_channel_op);
+
+int
+xencomm_hypercall_xen_version(int cmd, void *arg)
+{
+        struct xencomm_handle *desc;
+        unsigned int argsize;
+
+        switch (cmd) {
+        case XENVER_version:
+                /* do not actually pass an argument */
+                return xencomm_arch_hypercall_xen_version(cmd, 0);
+        case XENVER_extraversion:
+                argsize = sizeof(struct xen_extraversion);
+                break;
+        case XENVER_compile_info:
+                argsize = sizeof(struct xen_compile_info);
+                break;
+        case XENVER_capabilities:
+                argsize = sizeof(struct xen_capabilities_info);
+                break;
+        case XENVER_changeset:
+                argsize = sizeof(struct xen_changeset_info);
+                break;
+        case XENVER_platform_parameters:
+                argsize = sizeof(struct xen_platform_parameters);
+                break;
+        case XENVER_get_features:
+                argsize = (arg == NULL) ? 0 : sizeof(struct xen_feature_info);
+                break;
+
+        default:
+                printk(KERN_DEBUG
+                       "%s: unknown version op %d\n", __func__, cmd);
+                return -ENOSYS;
+        }
+
+        desc = xencomm_map_no_alloc(arg, argsize);
+        if (desc == NULL)
+                return -EINVAL;
+
+        return xencomm_arch_hypercall_xen_version(cmd, desc);
+}
+EXPORT_SYMBOL_GPL(xencomm_hypercall_xen_version);
+
+int
+xencomm_hypercall_physdev_op(int cmd, void *op)
+{
+        unsigned int argsize;
+
+        switch (cmd) {
+        case PHYSDEVOP_apic_read:
+        case PHYSDEVOP_apic_write:
+                argsize = sizeof(struct physdev_apic);
+                break;
+        case PHYSDEVOP_alloc_irq_vector:
+        case PHYSDEVOP_free_irq_vector:
+                argsize = sizeof(struct physdev_irq);
+                break;
+        case PHYSDEVOP_irq_status_query:
+                argsize = sizeof(struct physdev_irq_status_query);
+                break;
+
+        default:
+                printk(KERN_DEBUG
+                       "%s: unknown physdev op %d\n", __func__, cmd);
+                return -ENOSYS;
+        }
+
+        return xencomm_arch_hypercall_physdev_op
+                (cmd, xencomm_map_no_alloc(op, argsize));
+}
+
+static int
+xencommize_grant_table_op(struct xencomm_mini **xc_area,
+                          unsigned int cmd, void *op, unsigned int count,
+                          struct xencomm_handle **desc)
+{
+        struct xencomm_handle *desc1;
+        unsigned int argsize;
+
+        switch (cmd) {
+        case GNTTABOP_map_grant_ref:
+                argsize = sizeof(struct gnttab_map_grant_ref);
+                break;
+        case GNTTABOP_unmap_grant_ref:
+                argsize = sizeof(struct gnttab_unmap_grant_ref);
+                break;
+        case GNTTABOP_setup_table:
+        {
+                struct gnttab_setup_table *setup = op;
+
+                argsize = sizeof(*setup);
+
+                if (count != 1)
+                        return -EINVAL;
+                desc1 = __xencomm_map_no_alloc
+                        (xen_guest_handle(setup->frame_list),
+                         setup->nr_frames *
+                         sizeof(*xen_guest_handle(setup->frame_list)),
+                         *xc_area);
+                if (desc1 == NULL)
+                        return -EINVAL;
+                (*xc_area)++;
+                set_xen_guest_handle(setup->frame_list, (void *)desc1);
+                break;
+        }
+        case GNTTABOP_dump_table:
+                argsize = sizeof(struct gnttab_dump_table);
+                break;
+        case GNTTABOP_transfer:
+                argsize = sizeof(struct gnttab_transfer);
+                break;
+        case GNTTABOP_copy:
+                argsize = sizeof(struct gnttab_copy);
+                break;
+        case GNTTABOP_query_size:
+                argsize = sizeof(struct gnttab_query_size);
+                break;
+        default:
+                printk(KERN_DEBUG "%s: unknown hypercall grant table op %d\n",
+                       __func__, cmd);
+                BUG();
+        }
+
+        *desc = __xencomm_map_no_alloc(op, count * argsize, *xc_area);
+        if (*desc == NULL)
+                return -EINVAL;
+        (*xc_area)++;
+
+        return 0;
+}
+
+int
+xencomm_hypercall_grant_table_op(unsigned int cmd, void *op,
+                                 unsigned int count)
+{
+        int rc;
+        struct xencomm_handle *desc;
+        XENCOMM_MINI_ALIGNED(xc_area, 2);
+
+        rc = xencommize_grant_table_op(&xc_area, cmd, op, count, &desc);
+        if (rc)
+                return rc;
+
+        return xencomm_arch_hypercall_grant_table_op(cmd, desc, count);
+}
+EXPORT_SYMBOL_GPL(xencomm_hypercall_grant_table_op);
+
+int
+xencomm_hypercall_sched_op(int cmd, void *arg)
+{
+        struct xencomm_handle *desc;
+        unsigned int argsize;
+
+        switch (cmd) {
+        case SCHEDOP_yield:
+        case SCHEDOP_block:
+                argsize = 0;
+                break;
+        case SCHEDOP_shutdown:
+                argsize = sizeof(struct sched_shutdown);
+                break;
+        case SCHEDOP_poll:
+        {
+                struct sched_poll *poll = arg;
+                struct xencomm_handle *ports;
+
+                argsize = sizeof(struct sched_poll);
+                ports = xencomm_map_no_alloc(xen_guest_handle(poll->ports),
+                                     sizeof(*xen_guest_handle(poll->ports)));
+
+                set_xen_guest_handle(poll->ports, (void *)ports);
+                break;
+        }
+        default:
+                printk(KERN_DEBUG "%s: unknown sched op %d\n", __func__, cmd);
+                return -ENOSYS;
+        }
+
+        desc = xencomm_map_no_alloc(arg, argsize);
+        if (desc == NULL)
+                return -EINVAL;
+
+        return xencomm_arch_hypercall_sched_op(cmd, desc);
+}
+EXPORT_SYMBOL_GPL(xencomm_hypercall_sched_op);
+
+int
+xencomm_hypercall_multicall(void *call_list, int nr_calls)
+{
+        int rc;
+        int i;
+        struct multicall_entry *mce;
+        struct xencomm_handle *desc;
+        XENCOMM_MINI_ALIGNED(xc_area, nr_calls * 2);
+
+        for (i = 0; i < nr_calls; i++) {
+                mce = (struct multicall_entry *)call_list + i;
+
+                switch (mce->op) {
+                case __HYPERVISOR_update_va_mapping:
+                case __HYPERVISOR_mmu_update:
+                        /* No-op on ia64.  */
+                        break;
+                case __HYPERVISOR_grant_table_op:
+                        rc = xencommize_grant_table_op
+                                (&xc_area,
+                                 mce->args[0], (void *)mce->args[1],
+                                 mce->args[2], &desc);
+                        if (rc)
+                                return rc;
+                        mce->args[1] = (unsigned long)desc;
+                        break;
+                case __HYPERVISOR_memory_op:
+                default:
+                        printk(KERN_DEBUG
+                               "%s: unhandled multicall op entry op %lu\n",
+                               __func__, mce->op);
+                        return -ENOSYS;
+                }
+        }
+
+        desc = xencomm_map_no_alloc(call_list,
+                                    nr_calls * sizeof(struct multicall_entry));
+        if (desc == NULL)
+                return -EINVAL;
+
+        return xencomm_arch_hypercall_multicall(desc, nr_calls);
+}
+EXPORT_SYMBOL_GPL(xencomm_hypercall_multicall);
+
+int
+xencomm_hypercall_callback_op(int cmd, void *arg)
+{
+        unsigned int argsize;
+        switch (cmd) {
+        case CALLBACKOP_register:
+                argsize = sizeof(struct callback_register);
+                break;
+        case CALLBACKOP_unregister:
+                argsize = sizeof(struct callback_unregister);
+                break;
+        default:
+                printk(KERN_DEBUG
+                       "%s: unknown callback op %d\n", __func__, cmd);
+                return -ENOSYS;
+        }
+
+        return xencomm_arch_hypercall_callback_op
+                (cmd, xencomm_map_no_alloc(arg, argsize));
+}
+
+static int
+xencommize_memory_reservation(struct xencomm_mini *xc_area,
+                              struct xen_memory_reservation *mop)
+{
+        struct xencomm_handle *desc;
+
+        desc = __xencomm_map_no_alloc(xen_guest_handle(mop->extent_start),
+                        mop->nr_extents *
+                        sizeof(*xen_guest_handle(mop->extent_start)),
+                        xc_area);
+        if (desc == NULL)
+                return -EINVAL;
+
+        set_xen_guest_handle(mop->extent_start, (void *)desc);
+        return 0;
+}
+
+int
+xencomm_hypercall_memory_op(unsigned int cmd, void *arg)
+{
+        GUEST_HANDLE(xen_pfn_t) extent_start_va[2] = { {NULL}, {NULL} };
+        struct xen_memory_reservation *xmr = NULL;
+        int rc;
+        struct xencomm_handle *desc;
+        unsigned int argsize;
+        XENCOMM_MINI_ALIGNED(xc_area, 2);
+
+        switch (cmd) {
+        case XENMEM_increase_reservation:
+        case XENMEM_decrease_reservation:
+        case XENMEM_populate_physmap:
+                xmr = (struct xen_memory_reservation *)arg;
+                set_xen_guest_handle(extent_start_va[0],
+                                     xen_guest_handle(xmr->extent_start));
+
+                argsize = sizeof(*xmr);
+                rc = xencommize_memory_reservation(xc_area, xmr);
+                if (rc)
+                        return rc;
+                xc_area++;
+                break;
+
+        case XENMEM_maximum_ram_page:
+                argsize = 0;
+                break;
+
+        case XENMEM_add_to_physmap:
+                argsize = sizeof(struct xen_add_to_physmap);
+                break;
+
+        default:
+                printk(KERN_DEBUG "%s: unknown memory op %d\n", __func__, cmd);
+                return -ENOSYS;
+        }
+
+        desc = xencomm_map_no_alloc(arg, argsize);
+        if (desc == NULL)
+                return -EINVAL;
+
+        rc = xencomm_arch_hypercall_memory_op(cmd, desc);
+
+        switch (cmd) {
+        case XENMEM_increase_reservation:
+        case XENMEM_decrease_reservation:
+        case XENMEM_populate_physmap:
+                set_xen_guest_handle(xmr->extent_start,
+                                     xen_guest_handle(extent_start_va[0]));
+                break;
+        }
+
+        return rc;
+}
+EXPORT_SYMBOL_GPL(xencomm_hypercall_memory_op);
+
+int
+xencomm_hypercall_suspend(unsigned long srec)
+{
+        struct sched_shutdown arg;
+
+        arg.reason = SHUTDOWN_suspend;
+
+        return xencomm_arch_hypercall_sched_op(
+                SCHEDOP_shutdown, xencomm_map_no_alloc(&arg, sizeof(arg)));
+}
+
+long
+xencomm_hypercall_vcpu_op(int cmd, int cpu, void *arg)
+{
+        unsigned int argsize;
+        switch (cmd) {
+        case VCPUOP_register_runstate_memory_area: {
+                struct vcpu_register_runstate_memory_area *area =
+                        (struct vcpu_register_runstate_memory_area *)arg;
+                argsize = sizeof(*arg);
+                set_xen_guest_handle(area->addr.h,
+                     (void *)xencomm_map_no_alloc(area->addr.v,
+                                                  sizeof(area->addr.v)));
+                break;
+        }
+
+        default:
+                printk(KERN_DEBUG "%s: unknown vcpu op %d\n", __func__, cmd);
+                return -ENOSYS;
+        }
+
+        return xencomm_arch_hypercall_vcpu_op(cmd, cpu,
+                                        xencomm_map_no_alloc(arg, argsize));
+}
+
+long
+xencomm_hypercall_opt_feature(void *arg)
+{
+        return xencomm_arch_hypercall_opt_feature(
+                xencomm_map_no_alloc(arg,
+                                     sizeof(struct xen_ia64_opt_feature)));
+}
diff --git a/arch/ia64/xen/xen_pv_ops.c b/arch/ia64/xen/xen_pv_ops.c
new file mode 100644
index 000000000000..04cd12350455
--- /dev/null
+++ b/arch/ia64/xen/xen_pv_ops.c
@@ -0,0 +1,364 @@
+/******************************************************************************
+ * arch/ia64/xen/xen_pv_ops.c
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ *                    VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include <linux/console.h>
+#include <linux/irq.h>
+#include <linux/kernel.h>
+#include <linux/pm.h>
+
+#include <asm/xen/hypervisor.h>
+#include <asm/xen/xencomm.h>
+#include <asm/xen/privop.h>
+
+#include "irq_xen.h"
+#include "time.h"
+
+/***************************************************************************
+ * general info
+ */
+static struct pv_info xen_info __initdata = {
+        .kernel_rpl = 2,        /* or 1: determin at runtime */
+        .paravirt_enabled = 1,
+        .name = "Xen/ia64",
+};
+
+#define IA64_RSC_PL_SHIFT       2
+#define IA64_RSC_PL_BIT_SIZE    2
+#define IA64_RSC_PL_MASK        \
+        (((1UL << IA64_RSC_PL_BIT_SIZE) - 1) << IA64_RSC_PL_SHIFT)
+
+static void __init
+xen_info_init(void)
+{
+        /* Xenified Linux/ia64 may run on pl = 1 or 2.
+         * determin at run time. */
+        unsigned long rsc = ia64_getreg(_IA64_REG_AR_RSC);
+        unsigned int rpl = (rsc & IA64_RSC_PL_MASK) >> IA64_RSC_PL_SHIFT;
+        xen_info.kernel_rpl = rpl;
+}
+
+/***************************************************************************
+ * pv_init_ops
+ * initialization hooks.
+ */
+
+static void
+xen_panic_hypercall(struct unw_frame_info *info, void *arg)
+{
+        current->thread.ksp = (__u64)info->sw - 16;
+        HYPERVISOR_shutdown(SHUTDOWN_crash);
+        /* we're never actually going to get here... */
+}
+
+static int
+xen_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
+{
+        unw_init_running(xen_panic_hypercall, NULL);
+        /* we're never actually going to get here... */
+        return NOTIFY_DONE;
+}
+
+static struct notifier_block xen_panic_block = {
+        xen_panic_event, NULL, 0 /* try to go last */
+};
+
+static void xen_pm_power_off(void)
+{
+        local_irq_disable();
+        HYPERVISOR_shutdown(SHUTDOWN_poweroff);
+}
+
+static void __init
+xen_banner(void)
+{
+        printk(KERN_INFO
+               "Running on Xen! pl = %d start_info_pfn=0x%lx nr_pages=%ld "
+               "flags=0x%x\n",
+               xen_info.kernel_rpl,
+               HYPERVISOR_shared_info->arch.start_info_pfn,
+               xen_start_info->nr_pages, xen_start_info->flags);
+}
+
+static int __init
+xen_reserve_memory(struct rsvd_region *region)
+{
+        region->start = (unsigned long)__va(
+                (HYPERVISOR_shared_info->arch.start_info_pfn << PAGE_SHIFT));
+        region->end   = region->start + PAGE_SIZE;
+        return 1;
+}
+
+static void __init
+xen_arch_setup_early(void)
+{
+        struct shared_info *s;
+        BUG_ON(!xen_pv_domain());
+
+        s = HYPERVISOR_shared_info;
+        xen_start_info = __va(s->arch.start_info_pfn << PAGE_SHIFT);
+
+        /* Must be done before any hypercall.  */
+        xencomm_initialize();
+
+        xen_setup_features();
+        /* Register a call for panic conditions. */
+        atomic_notifier_chain_register(&panic_notifier_list,
+                                       &xen_panic_block);
+        pm_power_off = xen_pm_power_off;
+
+        xen_ia64_enable_opt_feature();
+}
+
+static void __init
+xen_arch_setup_console(char **cmdline_p)
+{
+        add_preferred_console("xenboot", 0, NULL);
+        add_preferred_console("tty", 0, NULL);
+        /* use hvc_xen */
+        add_preferred_console("hvc", 0, NULL);
+
+#if !defined(CONFIG_VT) || !defined(CONFIG_DUMMY_CONSOLE)
+        conswitchp = NULL;
+#endif
+}
+
+static int __init
+xen_arch_setup_nomca(void)
+{
+        return 1;
+}
+
+static void __init
+xen_post_smp_prepare_boot_cpu(void)
+{
+        xen_setup_vcpu_info_placement();
+}
+
+static const struct pv_init_ops xen_init_ops __initdata = {
+        .banner = xen_banner,
+
+        .reserve_memory = xen_reserve_memory,
+
+        .arch_setup_early = xen_arch_setup_early,
+        .arch_setup_console = xen_arch_setup_console,
+        .arch_setup_nomca = xen_arch_setup_nomca,
+
+        .post_smp_prepare_boot_cpu = xen_post_smp_prepare_boot_cpu,
+};
+
+/***************************************************************************
+ * pv_cpu_ops
+ * intrinsics hooks.
+ */
+
+static void xen_setreg(int regnum, unsigned long val)
+{
+        switch (regnum) {
+        case _IA64_REG_AR_KR0 ... _IA64_REG_AR_KR7:
+                xen_set_kr(regnum - _IA64_REG_AR_KR0, val);
+                break;
+#ifdef CONFIG_IA32_SUPPORT
+        case _IA64_REG_AR_EFLAG:
+                xen_set_eflag(val);
+                break;
+#endif
+        case _IA64_REG_CR_TPR:
+                xen_set_tpr(val);
+                break;
+        case _IA64_REG_CR_ITM:
+                xen_set_itm(val);
+                break;
+        case _IA64_REG_CR_EOI:
+                xen_eoi(val);
+                break;
+        default:
+                ia64_native_setreg_func(regnum, val);
+                break;
+        }
+}
+
+static unsigned long xen_getreg(int regnum)
+{
+        unsigned long res;
+
+        switch (regnum) {
+        case _IA64_REG_PSR:
+                res = xen_get_psr();
+                break;
+#ifdef CONFIG_IA32_SUPPORT
+        case _IA64_REG_AR_EFLAG:
+                res = xen_get_eflag();
+                break;
+#endif
+        case _IA64_REG_CR_IVR:
+                res = xen_get_ivr();
+                break;
+        case _IA64_REG_CR_TPR:
+                res = xen_get_tpr();
+                break;
+        default:
+                res = ia64_native_getreg_func(regnum);
+                break;
+        }
+        return res;
+}
+
+/* turning on interrupts is a bit more complicated.. write to the
+ * memory-mapped virtual psr.i bit first (to avoid race condition),
+ * then if any interrupts were pending, we have to execute a hyperprivop
+ * to ensure the pending interrupt gets delivered; else we're done! */
+static void
+xen_ssm_i(void)
+{
+        int old = xen_get_virtual_psr_i();
+        xen_set_virtual_psr_i(1);
+        barrier();
+        if (!old && xen_get_virtual_pend())
+                xen_hyper_ssm_i();
+}
+
+/* turning off interrupts can be paravirtualized simply by writing
+ * to a memory-mapped virtual psr.i bit (implemented as a 16-bit bool) */
+static void
+xen_rsm_i(void)
+{
+        xen_set_virtual_psr_i(0);
+        barrier();
+}
+
+static unsigned long
+xen_get_psr_i(void)
+{
+        return xen_get_virtual_psr_i() ? IA64_PSR_I : 0;
+}
+
+static void
+xen_intrin_local_irq_restore(unsigned long mask)
+{
+        if (mask & IA64_PSR_I)
+                xen_ssm_i();
+        else
+                xen_rsm_i();
+}
+
+static const struct pv_cpu_ops xen_cpu_ops __initdata = {
+        .fc             = xen_fc,
+        .thash          = xen_thash,
+        .get_cpuid      = xen_get_cpuid,
+        .get_pmd        = xen_get_pmd,
+        .getreg         = xen_getreg,
+        .setreg         = xen_setreg,
+        .ptcga          = xen_ptcga,
+        .get_rr         = xen_get_rr,
+        .set_rr         = xen_set_rr,
+        .set_rr0_to_rr4 = xen_set_rr0_to_rr4,
+        .ssm_i          = xen_ssm_i,
+        .rsm_i          = xen_rsm_i,
+        .get_psr_i      = xen_get_psr_i,
+        .intrin_local_irq_restore
+                        = xen_intrin_local_irq_restore,
+};
+
+/******************************************************************************
+ * replacement of hand written assembly codes.
+ */
+
+extern char xen_switch_to;
+extern char xen_leave_syscall;
+extern char xen_work_processed_syscall;
+extern char xen_leave_kernel;
+
+const struct pv_cpu_asm_switch xen_cpu_asm_switch = {
+        .switch_to              = (unsigned long)&xen_switch_to,
+        .leave_syscall          = (unsigned long)&xen_leave_syscall,
+        .work_processed_syscall = (unsigned long)&xen_work_processed_syscall,
+        .leave_kernel           = (unsigned long)&xen_leave_kernel,
+};
+
+/***************************************************************************
+ * pv_iosapic_ops
+ * iosapic read/write hooks.
+ */
+static void
+xen_pcat_compat_init(void)
+{
+        /* nothing */
+}
+
+static struct irq_chip*
+xen_iosapic_get_irq_chip(unsigned long trigger)
+{
+        return NULL;
+}
+
+static unsigned int
+xen_iosapic_read(char __iomem *iosapic, unsigned int reg)
+{
+        struct physdev_apic apic_op;
+        int ret;
+
+        apic_op.apic_physbase = (unsigned long)iosapic -
+                                        __IA64_UNCACHED_OFFSET;
+        apic_op.reg = reg;
+        ret = HYPERVISOR_physdev_op(PHYSDEVOP_apic_read, &apic_op);
+        if (ret)
+                return ret;
+        return apic_op.value;
+}
+
+static void
+xen_iosapic_write(char __iomem *iosapic, unsigned int reg, u32 val)
+{
+        struct physdev_apic apic_op;
+
+        apic_op.apic_physbase = (unsigned long)iosapic -
+                                        __IA64_UNCACHED_OFFSET;
+        apic_op.reg = reg;
+        apic_op.value = val;
+        HYPERVISOR_physdev_op(PHYSDEVOP_apic_write, &apic_op);
+}
+
+static const struct pv_iosapic_ops xen_iosapic_ops __initdata = {
+        .pcat_compat_init = xen_pcat_compat_init,
+        .__get_irq_chip = xen_iosapic_get_irq_chip,
+
+        .__read = xen_iosapic_read,
+        .__write = xen_iosapic_write,
+};
+
+/***************************************************************************
+ * pv_ops initialization
+ */
+
+void __init
+xen_setup_pv_ops(void)
+{
+        xen_info_init();
+        pv_info = xen_info;
+        pv_init_ops = xen_init_ops;
+        pv_cpu_ops = xen_cpu_ops;
+        pv_iosapic_ops = xen_iosapic_ops;
+        pv_irq_ops = xen_irq_ops;
+        pv_time_ops = xen_time_ops;
+
+        paravirt_cpu_asm_init(&xen_cpu_asm_switch);
+}
diff --git a/arch/ia64/xen/xencomm.c b/arch/ia64/xen/xencomm.c
new file mode 100644
index 000000000000..1f5d7ac82e97
--- /dev/null
+++ b/arch/ia64/xen/xencomm.c
@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2006 Hollis Blanchard <hollisb@us.ibm.com>, IBM Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ */
+
+#include <linux/mm.h>
+
+static unsigned long kernel_virtual_offset;
+static int is_xencomm_initialized;
+
+/* for xen early printk. It uses console io hypercall which uses xencomm.
+ * However early printk may use it before xencomm initialization.
+ */
+int
+xencomm_is_initialized(void)
+{
+        return is_xencomm_initialized;
+}
+
+void
+xencomm_initialize(void)
+{
+        kernel_virtual_offset = KERNEL_START - ia64_tpa(KERNEL_START);
+        is_xencomm_initialized = 1;
+}
+
+/* Translate virtual address to physical address.  */
+unsigned long
+xencomm_vtop(unsigned long vaddr)
+{
+        struct page *page;
+        struct vm_area_struct *vma;
+
+        if (vaddr == 0)
+                return 0UL;
+
+        if (REGION_NUMBER(vaddr) == 5) {
+                pgd_t *pgd;
+                pud_t *pud;
+                pmd_t *pmd;
+                pte_t *ptep;
+
+                /* On ia64, TASK_SIZE refers to current.  It is not initialized
+                   during boot.
+                   Furthermore the kernel is relocatable and __pa() doesn't
+                   work on  addresses.  */
+                if (vaddr >= KERNEL_START
+                    && vaddr < (KERNEL_START + KERNEL_TR_PAGE_SIZE))
+                        return vaddr - kernel_virtual_offset;
+
+                /* In kernel area -- virtually mapped.  */
+                pgd = pgd_offset_k(vaddr);
+                if (pgd_none(*pgd) || pgd_bad(*pgd))
+                        return ~0UL;
+
+                pud = pud_offset(pgd, vaddr);
+                if (pud_none(*pud) || pud_bad(*pud))
+                        return ~0UL;
+
+                pmd = pmd_offset(pud, vaddr);
+                if (pmd_none(*pmd) || pmd_bad(*pmd))
+                        return ~0UL;
+
+                ptep = pte_offset_kernel(pmd, vaddr);
+                if (!ptep)
+                        return ~0UL;
+
+                return (pte_val(*ptep) & _PFN_MASK) | (vaddr & ~PAGE_MASK);
+        }
+
+        if (vaddr > TASK_SIZE) {
+                /* percpu variables */
+                if (REGION_NUMBER(vaddr) == 7 &&
+                    REGION_OFFSET(vaddr) >= (1ULL << IA64_MAX_PHYS_BITS))
+                        ia64_tpa(vaddr);
+
+                /* kernel address */
+                return __pa(vaddr);
+        }
+
+        /* XXX double-check (lack of) locking */
+        vma = find_extend_vma(current->mm, vaddr);
+        if (!vma)
+                return ~0UL;
+
+        /* We assume the page is modified.  */
+        page = follow_page(vma, vaddr, FOLL_WRITE | FOLL_TOUCH);
+        if (!page)
+                return ~0UL;
+
+        return (page_to_pfn(page) << PAGE_SHIFT) | (vaddr & ~PAGE_MASK);
+}
diff --git a/arch/ia64/xen/xenivt.S b/arch/ia64/xen/xenivt.S
new file mode 100644
index 000000000000..3e71d50584d9
--- /dev/null
+++ b/arch/ia64/xen/xenivt.S
@@ -0,0 +1,52 @@
+/*
+ * arch/ia64/xen/ivt.S
+ *
+ * Copyright (C) 2005 Hewlett-Packard Co
+ *      Dan Magenheimer <dan.magenheimer@hp.com>
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ *                    VA Linux Systems Japan K.K.
+ *                    pv_ops.
+ */
+
+#include <asm/asmmacro.h>
+#include <asm/kregs.h>
+#include <asm/pgtable.h>
+
+#include "../kernel/minstate.h"
+
+        .section .text,"ax"
+GLOBAL_ENTRY(xen_event_callback)
+        mov r31=pr              // prepare to save predicates
+        ;;
+        SAVE_MIN_WITH_COVER     // uses r31; defines r2 and r3
+        ;;
+        movl r3=XSI_PSR_IC
+        mov r14=1
+        ;;
+        st4 [r3]=r14
+        ;;
+        adds r3=8,r2            // set up second base pointer for SAVE_REST
+        srlz.i                  // ensure everybody knows psr.ic is back on
+        ;;
+        SAVE_REST
+        ;;
+1:
+        alloc r14=ar.pfs,0,0,1,0 // must be first in an insn group
+        add out0=16,sp          // pass pointer to pt_regs as first arg
+        ;;
+        br.call.sptk.many b0=xen_evtchn_do_upcall
+        ;;
+        movl r20=XSI_PSR_I_ADDR
+        ;;
+        ld8 r20=[r20]
+        ;;
+        adds r20=-1,r20         // vcpu_info->evtchn_upcall_pending
+        ;;
+        ld1 r20=[r20]
+        ;;
+        cmp.ne p6,p0=r20,r0     // if there are pending events,
+        (p6) br.spnt.few 1b     // call evtchn_do_upcall again.
+        br.sptk.many xen_leave_kernel   // we know ia64_leave_kernel is
+                                        // paravirtualized as xen_leave_kernel
+END(xen_event_callback)
diff --git a/arch/ia64/xen/xensetup.S b/arch/ia64/xen/xensetup.S
new file mode 100644
index 000000000000..28fed1fcc079
--- /dev/null
+++ b/arch/ia64/xen/xensetup.S
@@ -0,0 +1,83 @@
+/*
+ * Support routines for Xen
+ *
+ * Copyright (C) 2005 Dan Magenheimer <dan.magenheimer@hp.com>
+ */
+
+#include <asm/processor.h>
+#include <asm/asmmacro.h>
+#include <asm/pgtable.h>
+#include <asm/system.h>
+#include <asm/paravirt.h>
+#include <asm/xen/privop.h>
+#include <linux/elfnote.h>
+#include <linux/init.h>
+#include <xen/interface/elfnote.h>
+
+        .section .data.read_mostly
+        .align 8
+        .global xen_domain_type
+xen_domain_type:
+        data4 XEN_NATIVE_ASM
+        .previous
+
+        __INIT
+ENTRY(startup_xen)
+        // Calculate load offset.
+        // The constant, LOAD_OFFSET, can't be used because the boot
+        // loader doesn't always load to the LMA specified by the vmlinux.lds.
+        mov r9=ip       // must be the first instruction to make sure
+                        // that r9 = the physical address of startup_xen.
+                        // Usually r9 = startup_xen - LOAD_OFFSET
+        movl r8=startup_xen
+        ;;
+        sub r9=r9,r8    // Usually r9 = -LOAD_OFFSET.
+
+        mov r10=PARAVIRT_HYPERVISOR_TYPE_XEN
+        movl r11=_start
+        ;;
+        add r11=r11,r9
+        movl r8=hypervisor_type
+        ;;
+        add r8=r8,r9
+        mov b0=r11
+        ;;
+        st8 [r8]=r10
+        br.cond.sptk.many b0
+        ;;
+END(startup_xen)
+
+        ELFNOTE(Xen, XEN_ELFNOTE_GUEST_OS,      .asciz "linux")
+        ELFNOTE(Xen, XEN_ELFNOTE_GUEST_VERSION, .asciz "2.6")
+        ELFNOTE(Xen, XEN_ELFNOTE_XEN_VERSION,   .asciz "xen-3.0")
+        ELFNOTE(Xen, XEN_ELFNOTE_ENTRY,         data8.ua startup_xen - LOAD_OFFSET)
+
+#define isBP    p3      // are we the Bootstrap Processor?
+
+        .text
+
+GLOBAL_ENTRY(xen_setup_hook)
+        mov r8=XEN_PV_DOMAIN_ASM
+(isBP)  movl r9=xen_domain_type;;
+(isBP)  st4 [r9]=r8
+        movl r10=xen_ivt;;
+
+        mov cr.iva=r10
+
+        /* Set xsi base.  */
+#define FW_HYPERCALL_SET_SHARED_INFO_VA                 0x600
+(isBP)  mov r2=FW_HYPERCALL_SET_SHARED_INFO_VA
+(isBP)  movl r28=XSI_BASE;;
+(isBP)  break 0x1000;;
+
+        /* setup pv_ops */
+(isBP)  mov r4=rp
+        ;;
+(isBP)  br.call.sptk.many rp=xen_setup_pv_ops
+        ;;
+(isBP)  mov rp=r4
+        ;;
+
+        br.ret.sptk.many rp
+        ;;
+END(xen_setup_hook)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 9391199d9e77..5b1527883fcb 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -19,9 +19,6 @@ config WORD_SIZE
         default 64 if PPC64
         default 32 if !PPC64
 
-config PPC_MERGE
-        def_bool y
-
 config ARCH_PHYS_ADDR_T_64BIT
        def_bool PPC64 || PHYS_64BIT
 
@@ -326,13 +323,11 @@ config KEXEC
 
 config CRASH_DUMP
         bool "Build a kdump crash kernel"
-        depends on PPC_MULTIPLATFORM && PPC64
+        depends on PPC_MULTIPLATFORM && PPC64 && RELOCATABLE
         help
           Build a kernel suitable for use as a kdump capture kernel.
-          The kernel will be linked at a different address than normal, and
-          so can only be used for Kdump.
-
-          Don't change this unless you know what you are doing.
+          The same kernel binary can be used as production kernel and dump
+          capture kernel.
 
 config PHYP_DUMP
         bool "Hypervisor-assisted dump (EXPERIMENTAL)"
@@ -832,11 +827,9 @@ config PAGE_OFFSET
         default "0xc000000000000000"
 config KERNEL_START
         hex
-        default "0xc000000002000000" if CRASH_DUMP
         default "0xc000000000000000"
 config PHYSICAL_START
         hex
-        default "0x02000000" if CRASH_DUMP
         default "0x00000000"
 endif
 
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index aac1406ccba5..8fc6d72849ae 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -68,7 +68,8 @@ src-plat := of.c cuboot-52xx.c cuboot-824x.c cuboot-83xx.c cuboot-85xx.c holly.c
                 fixed-head.S ep88xc.c ep405.c cuboot-c2k.c \
                 cuboot-katmai.c cuboot-rainier.c redboot-8xx.c ep8248e.c \
                 cuboot-warp.c cuboot-85xx-cpm2.c cuboot-yosemite.c simpleboot.c \
-                virtex405-head.S virtex.c redboot-83xx.c cuboot-sam440ep.c
+                virtex405-head.S virtex.c redboot-83xx.c cuboot-sam440ep.c \
+                cuboot-acadia.c
 src-boot := $(src-wlib) $(src-plat) empty.c
 
 src-boot := $(addprefix $(obj)/, $(src-boot))
@@ -211,6 +212,7 @@ image-$(CONFIG_DEFAULT_UIMAGE)		+= uImage
 # Board ports in arch/powerpc/platform/40x/Kconfig
 image-$(CONFIG_EP405)                   += dtbImage.ep405
 image-$(CONFIG_WALNUT)                  += treeImage.walnut
+image-$(CONFIG_ACADIA)                  += cuImage.acadia
 
 # Board ports in arch/powerpc/platform/44x/Kconfig
 image-$(CONFIG_EBONY)                   += treeImage.ebony cuImage.ebony
@@ -319,6 +321,9 @@ $(obj)/zImage.iseries: vmlinux
 $(obj)/uImage: vmlinux $(wrapperbits)
         $(call if_changed,wrap,uboot)
 
+$(obj)/cuImage.initrd.%: vmlinux $(obj)/%.dtb $(wrapperbits)
+        $(call if_changed,wrap,cuboot-$*,,$(obj)/$*.dtb,$(obj)/ramdisk.image.gz)
+
 $(obj)/cuImage.%: vmlinux $(obj)/%.dtb $(wrapperbits)
         $(call if_changed,wrap,cuboot-$*,,$(obj)/$*.dtb)
 
diff --git a/arch/powerpc/boot/addnote.c b/arch/powerpc/boot/addnote.c
index dcc9ab2ca823..3091d1d21aef 100644
--- a/arch/powerpc/boot/addnote.c
+++ b/arch/powerpc/boot/addnote.c
@@ -11,7 +11,7 @@
  * as published by the Free Software Foundation; either version
  * 2 of the License, or (at your option) any later version.
  *
- * Usage: addnote zImage [note.elf]
+ * Usage: addnote [-r realbase] zImage [note.elf]
  *
  * If note.elf is supplied, it is the name of an ELF file that contains
  * an RPA note to use instead of the built-in one.  Alternatively, the
@@ -153,18 +153,31 @@ unsigned char *read_rpanote(const char *fname, int *nnp)
 int
 main(int ac, char **av)
 {
-        int fd, n, i;
+        int fd, n, i, ai;
         int ph, ps, np;
         int nnote, nnote2, ns;
         unsigned char *rpap;
-
-        if (ac != 2 && ac != 3) {
-                fprintf(stderr, "Usage: %s elf-file [rpanote.elf]\n", av[0]);
+        char *p, *endp;
+
+        ai = 1;
+        if (ac >= ai + 2 && strcmp(av[ai], "-r") == 0) {
+                /* process -r realbase */
+                p = av[ai + 1];
+                descr[1] = strtol(p, &endp, 16);
+                if (endp == p || *endp != 0) {
+                        fprintf(stderr, "Can't parse -r argument '%s' as hex\n",
+                                p);
+                        exit(1);
+                }
+                ai += 2;
+        }
+        if (ac != ai + 1 && ac != ai + 2) {
+                fprintf(stderr, "Usage: %s [-r realbase] elf-file [rpanote.elf]\n", av[0]);
                 exit(1);
         }
-        fd = open(av[1], O_RDWR);
+        fd = open(av[ai], O_RDWR);
         if (fd < 0) {
-                perror(av[1]);
+                perror(av[ai]);
                 exit(1);
         }
 
@@ -184,12 +197,12 @@ main(int ac, char **av)
         if (buf[E_IDENT+EI_CLASS] != ELFCLASS32
             || buf[E_IDENT+EI_DATA] != ELFDATA2MSB) {
                 fprintf(stderr, "%s is not a big-endian 32-bit ELF image\n",
-                        av[1]);
+                        av[ai]);
                 exit(1);
         }
 
-        if (ac == 3)
-                rpap = read_rpanote(av[2], &nnote2);
+        if (ac == ai + 2)
+                rpap = read_rpanote(av[ai + 1], &nnote2);
 
         ph = GET_32BE(buf, E_PHOFF);
         ps = GET_16BE(buf, E_PHENTSIZE);
@@ -202,7 +215,7 @@ main(int ac, char **av)
         for (i = 0; i < np; ++i) {
                 if (GET_32BE(buf, ph + PH_TYPE) == PT_NOTE) {
                         fprintf(stderr, "%s already has a note entry\n",
-                                av[1]);
+                                av[ai]);
                         exit(0);
                 }
                 ph += ps;
@@ -260,18 +273,18 @@ main(int ac, char **av)
                 exit(1);
         }
         if (i < n) {
-                fprintf(stderr, "%s: write truncated\n", av[1]);
+                fprintf(stderr, "%s: write truncated\n", av[ai]);
                 exit(1);
         }
 
         exit(0);
 
  notelf:
-        fprintf(stderr, "%s does not appear to be an ELF file\n", av[1]);
+        fprintf(stderr, "%s does not appear to be an ELF file\n", av[ai]);
         exit(1);
 
  nospace:
         fprintf(stderr, "sorry, I can't find space in %s to put the note\n",
-                av[1]);
+                av[ai]);
         exit(1);
 }
diff --git a/arch/powerpc/boot/cuboot-52xx.c b/arch/powerpc/boot/cuboot-52xx.c
index a8611546a656..4c42ec8687be 100644
--- a/arch/powerpc/boot/cuboot-52xx.c
+++ b/arch/powerpc/boot/cuboot-52xx.c
@@ -37,6 +37,10 @@ static void platform_fixups(void)
          * this can do a simple path lookup.
          */
         soc = find_node_by_devtype(NULL, "soc");
+        if (!soc)
+                soc = find_node_by_compatible(NULL, "fsl,mpc5200-immr");
+        if (!soc)
+                soc = find_node_by_compatible(NULL, "fsl,mpc5200b-immr");
         if (soc) {
                 setprop(soc, "bus-frequency", &bd.bi_ipbfreq,
                         sizeof(bd.bi_ipbfreq));
diff --git a/arch/powerpc/boot/cuboot-acadia.c b/arch/powerpc/boot/cuboot-acadia.c
new file mode 100644
index 000000000000..0634aba6348a
--- /dev/null
+++ b/arch/powerpc/boot/cuboot-acadia.c
@@ -0,0 +1,174 @@
+/*
+ * Old U-boot compatibility for Acadia
+ *
+ * Author: Josh Boyer <jwboyer@linux.vnet.ibm.com>
+ *
+ * Copyright 2008 IBM Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include "ops.h"
+#include "io.h"
+#include "dcr.h"
+#include "stdio.h"
+#include "4xx.h"
+#include "44x.h"
+#include "cuboot.h"
+
+#define TARGET_4xx
+#include "ppcboot.h"
+
+static bd_t bd;
+
+#define CPR_PERD0_SPIDV_MASK   0x000F0000     /* SPI Clock Divider */
+
+#define PLLC_SRC_MASK          0x20000000     /* PLL feedback source */
+
+#define PLLD_FBDV_MASK         0x1F000000     /* PLL feedback divider value */
+#define PLLD_FWDVA_MASK        0x000F0000     /* PLL forward divider A value */
+#define PLLD_FWDVB_MASK        0x00000700     /* PLL forward divider B value */
+
+#define PRIMAD_CPUDV_MASK      0x0F000000     /* CPU Clock Divisor Mask */
+#define PRIMAD_PLBDV_MASK      0x000F0000     /* PLB Clock Divisor Mask */
+#define PRIMAD_OPBDV_MASK      0x00000F00     /* OPB Clock Divisor Mask */
+#define PRIMAD_EBCDV_MASK      0x0000000F     /* EBC Clock Divisor Mask */
+
+#define PERD0_PWMDV_MASK       0xFF000000     /* PWM Divider Mask */
+#define PERD0_SPIDV_MASK       0x000F0000     /* SPI Divider Mask */
+#define PERD0_U0DV_MASK        0x0000FF00     /* UART 0 Divider Mask */
+#define PERD0_U1DV_MASK        0x000000FF     /* UART 1 Divider Mask */
+
+static void get_clocks(void)
+{
+        unsigned long sysclk, cpr_plld, cpr_pllc, cpr_primad, plloutb, i;
+        unsigned long pllFwdDiv, pllFwdDivB, pllFbkDiv, pllPlbDiv, pllExtBusDiv;
+        unsigned long pllOpbDiv, freqEBC, freqUART, freqOPB;
+        unsigned long div;              /* total divisor udiv * bdiv */
+        unsigned long umin;             /* minimum udiv */
+        unsigned short diff;            /* smallest diff */
+        unsigned long udiv;             /* best udiv */
+        unsigned short idiff;           /* current diff */
+        unsigned short ibdiv;           /* current bdiv */
+        unsigned long est;              /* current estimate */
+        unsigned long baud;
+        void *np;
+
+        /* read the sysclk value from the CPLD */
+        sysclk = (in_8((unsigned char *)0x80000000) == 0xc) ? 66666666 : 33333000;
+
+        /*
+         * Read PLL Mode registers
+         */
+        cpr_plld = CPR0_READ(DCRN_CPR0_PLLD);
+        cpr_pllc = CPR0_READ(DCRN_CPR0_PLLC);
+
+        /*
+         * Determine forward divider A
+         */
+        pllFwdDiv = ((cpr_plld & PLLD_FWDVA_MASK) >> 16);
+
+        /*
+         * Determine forward divider B
+         */
+        pllFwdDivB = ((cpr_plld & PLLD_FWDVB_MASK) >> 8);
+        if (pllFwdDivB == 0)
+                pllFwdDivB = 8;
+
+        /*
+         * Determine FBK_DIV.
+         */
+        pllFbkDiv = ((cpr_plld & PLLD_FBDV_MASK) >> 24);
+        if (pllFbkDiv == 0)
+                pllFbkDiv = 256;
+
+        /*
+         * Read CPR_PRIMAD register
+         */
+        cpr_primad = CPR0_READ(DCRN_CPR0_PRIMAD);
+
+        /*
+         * Determine PLB_DIV.
+         */
+        pllPlbDiv = ((cpr_primad & PRIMAD_PLBDV_MASK) >> 16);
+        if (pllPlbDiv == 0)
+                pllPlbDiv = 16;
+
+        /*
+         * Determine EXTBUS_DIV.
+         */
+        pllExtBusDiv = (cpr_primad & PRIMAD_EBCDV_MASK);
+        if (pllExtBusDiv == 0)
+                pllExtBusDiv = 16;
+
+        /*
+         * Determine OPB_DIV.
+         */
+        pllOpbDiv = ((cpr_primad & PRIMAD_OPBDV_MASK) >> 8);
+        if (pllOpbDiv == 0)
+                pllOpbDiv = 16;
+
+        /* There is a bug in U-Boot that prevents us from using
+         * bd.bi_opbfreq because U-Boot doesn't populate it for
+         * 405EZ.  We get to calculate it, yay!
+         */
+        freqOPB = (sysclk *pllFbkDiv) /pllOpbDiv;
+
+        freqEBC = (sysclk * pllFbkDiv) / pllExtBusDiv;
+
+        plloutb = ((sysclk * ((cpr_pllc & PLLC_SRC_MASK) ?
+                                           pllFwdDivB : pllFwdDiv) *
+                    pllFbkDiv) / pllFwdDivB);
+
+        np = find_node_by_alias("serial0");
+        if (getprop(np, "current-speed", &baud, sizeof(baud)) != sizeof(baud))
+                fatal("no current-speed property\n\r");
+
+        udiv = 256;                     /* Assume lowest possible serial clk */
+        div = plloutb / (16 * baud); /* total divisor */
+        umin = (plloutb / freqOPB) << 1;        /* 2 x OPB divisor */
+        diff = 256;                     /* highest possible */
+
+        /* i is the test udiv value -- start with the largest
+         * possible (256) to minimize serial clock and constrain
+         * search to umin.
+         */
+        for (i = 256; i > umin; i--) {
+                ibdiv = div / i;
+                est = i * ibdiv;
+                idiff = (est > div) ? (est-div) : (div-est);
+                if (idiff == 0) {
+                        udiv = i;
+                        break;      /* can't do better */
+                } else if (idiff < diff) {
+                        udiv = i;       /* best so far */
+                        diff = idiff;   /* update lowest diff*/
+                }
+        }
+        freqUART = plloutb / udiv;
+
+        dt_fixup_cpu_clocks(bd.bi_procfreq, bd.bi_intfreq, bd.bi_plb_busfreq);
+        dt_fixup_clock("/plb/ebc", freqEBC);
+        dt_fixup_clock("/plb/opb", freqOPB);
+        dt_fixup_clock("/plb/opb/serial@ef600300", freqUART);
+        dt_fixup_clock("/plb/opb/serial@ef600400", freqUART);
+}
+
+static void acadia_fixups(void)
+{
+        dt_fixup_memory(bd.bi_memstart, bd.bi_memsize);
+        get_clocks();
+        dt_fixup_mac_address_by_alias("ethernet0", bd.bi_enetaddr);
+}
+        
+void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+                unsigned long r6, unsigned long r7)
+{
+        CUBOOT_INIT();
+        platform_ops.fixups = acadia_fixups;
+        platform_ops.exit = ibm40x_dbcr_reset;
+        fdt_init(_dtb_start);
+        serial_console_init();
+}
diff --git a/arch/powerpc/boot/dts/acadia.dts b/arch/powerpc/boot/dts/acadia.dts
new file mode 100644
index 000000000000..57291f61ffe7
--- /dev/null
+++ b/arch/powerpc/boot/dts/acadia.dts
@@ -0,0 +1,224 @@
+/*
+ * Device Tree Source for AMCC Acadia (405EZ)
+ *
+ * Copyright IBM Corp. 2008
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2.  This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+/dts-v1/;
+
+/ {
+        #address-cells = <1>;
+        #size-cells = <1>;
+        model = "amcc,acadia";
+        compatible = "amcc,acadia";
+        dcr-parent = <&{/cpus/cpu@0}>;
+
+        aliases {
+                ethernet0 = &EMAC0;
+                serial0 = &UART0;
+                serial1 = &UART1;
+        };
+
+        cpus {
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                cpu@0 {
+                        device_type = "cpu";
+                        model = "PowerPC,405EZ";
+                        reg = <0x0>;
+                        clock-frequency = <0>; /* Filled in by wrapper */
+                        timebase-frequency = <0>; /* Filled in by wrapper */
+                        i-cache-line-size = <32>;
+                        d-cache-line-size = <32>;
+                        i-cache-size = <16384>;
+                        d-cache-size = <16384>;
+                        dcr-controller;
+                        dcr-access-method = "native";
+                };
+        };
+
+        memory {
+                device_type = "memory";
+                reg = <0x0 0x0>; /* Filled in by wrapper */
+        };
+
+        UIC0: interrupt-controller {
+                compatible = "ibm,uic-405ez", "ibm,uic";
+                interrupt-controller;
+                dcr-reg = <0x0c0 0x009>;
+                cell-index = <0>;
+                #address-cells = <0>;
+                #size-cells = <0>;
+                #interrupt-cells = <2>;
+        };
+
+        plb {
+                compatible = "ibm,plb-405ez", "ibm,plb3";
+                #address-cells = <1>;
+                #size-cells = <1>;
+                ranges;
+                clock-frequency = <0>; /* Filled in by wrapper */
+
+                MAL0: mcmal {
+                        compatible = "ibm,mcmal-405ez", "ibm,mcmal";
+                        dcr-reg = <0x380 0x62>;
+                        num-tx-chans = <1>;
+                        num-rx-chans = <1>;
+                        interrupt-parent = <&UIC0>;
+                        /* 405EZ has only 3 interrupts to the UIC, as
+                         * SERR, TXDE, and RXDE are or'd together into
+                         * one UIC bit
+                         */
+                        interrupts = <
+                                0x13 0x4 /* TXEOB */
+                                0x15 0x4 /* RXEOB */
+                                0x12 0x4 /* SERR, TXDE, RXDE */>;
+                };
+
+                POB0: opb {
+                        compatible = "ibm,opb-405ez", "ibm,opb";
+                        #address-cells = <1>;
+                        #size-cells = <1>;
+                        ranges;
+                        dcr-reg = <0x0a 0x05>;
+                        clock-frequency = <0>; /* Filled in by wrapper */
+
+                        UART0: serial@ef600300 {
+                                device_type = "serial";
+                                compatible = "ns16550";
+                                reg = <0xef600300 0x8>;
+                                virtual-reg = <0xef600300>;
+                                clock-frequency = <0>; /* Filled in by wrapper */
+                                current-speed = <115200>;
+                                interrupt-parent = <&UIC0>;
+                                interrupts = <0x5 0x4>;
+                        };
+
+                        UART1: serial@ef600400 {
+                                device_type = "serial";
+                                compatible = "ns16550";
+                                reg = <0xef600400 0x8>;
+                                clock-frequency = <0>; /* Filled in by wrapper */
+                                current-speed = <115200>;
+                                interrupt-parent = <&UIC0>;
+                                interrupts = <0x6 0x4>;
+                        };
+
+                        IIC: i2c@ef600500 {
+                                compatible = "ibm,iic-405ez", "ibm,iic";
+                                reg = <0xef600500 0x11>;
+                                interrupt-parent = <&UIC0>;
+                                interrupts = <0xa 0x4>;
+                        };
+
+                        GPIO0: gpio@ef600700 {
+                                compatible = "ibm,gpio-405ez";
+                                reg = <0xef600700 0x20>;
+                        };
+
+                        GPIO1: gpio@ef600800 {
+                                compatible = "ibm,gpio-405ez";
+                                reg = <0xef600800 0x20>;
+                        };
+
+                        EMAC0: ethernet@ef600900 {
+                                device_type = "network";
+                                compatible = "ibm,emac-405ez", "ibm,emac";
+                                interrupt-parent = <&UIC0>;
+                                interrupts = <
+                                        0x10 0x4 /* Ethernet */
+                                        0x11 0x4 /* Ethernet Wake up */>;
+                                local-mac-address = [000000000000]; /* Filled in by wrapper */
+                                reg = <0xef600900 0x70>;
+                                mal-device = <&MAL0>;
+                                mal-tx-channel = <0>;
+                                mal-rx-channel = <0>;
+                                cell-index = <0>;
+                                max-frame-size = <1500>;
+                                rx-fifo-size = <4096>;
+                                tx-fifo-size = <2048>;
+                                phy-mode = "mii";
+                                phy-map = <0x0>;
+                        };
+
+                        CAN0: can@ef601000 {
+                                compatible = "amcc,can-405ez";
+                                reg = <0xef601000 0x620>;
+                                interrupt-parent = <&UIC0>;
+                                interrupts = <0x7 0x4>;
+                        };
+
+                        CAN1: can@ef601800 {
+                                compatible = "amcc,can-405ez";
+                                reg = <0xef601800 0x620>;
+                                interrupt-parent = <&UIC0>;
+                                interrupts = <0x8 0x4>;
+                        };
+
+                        cameleon@ef602000 {
+                                compatible = "amcc,cameleon-405ez";
+                                reg = <0xef602000 0x800>;
+                                interrupt-parent = <&UIC0>;
+                                interrupts = <0xb 0x4 0xc 0x4>;
+                        };
+
+                        ieee1588@ef602800 {
+                                compatible = "amcc,ieee1588-405ez";
+                                reg = <0xef602800 0x60>;
+                                interrupt-parent = <&UIC0>;
+                                interrupts = <0x4 0x4>;
+                                /* This thing is a bit weird.  It has it's own UIC
+                                 * that it uses to generate snapshot triggers.  We
+                                 * don't really support this device yet, and it needs
+                                 * work to figure this out.
+                                 */
+                                dcr-reg = <0xe0 0x9>;
+                        };
+
+                        usb@ef603000 {
+                                compatible = "ohci-be";
+                                reg = <0xef603000 0x80>;
+                                interrupts-parent = <&UIC0>;
+                                interrupts = <0xd 0x4 0xe 0x4>;
+                        };
+
+                        dac@ef603300 {
+                                compatible = "amcc,dac-405ez";
+                                reg = <0xef603300 0x40>;
+                                interrupt-parent = <&UIC0>;
+                                interrupts = <0x18 0x4>;
+                        };
+
+                        adc@ef603400 {
+                                compatible = "amcc,adc-405ez";
+                                reg = <0xef603400 0x40>;
+                                interrupt-parent = <&UIC0>;
+                                interrupts = <0x17 0x4>;
+                        };
+
+                        spi@ef603500 {
+                                compatible = "amcc,spi-405ez";
+                                reg = <0xef603500 0x100>;
+                                interrupt-parent = <&UIC0>;
+                                interrupts = <0x9 0x4>;
+                        };
+                };
+
+                EBC0: ebc {
+                        compatible = "ibm,ebc-405ez", "ibm,ebc";
+                        dcr-reg = <0x12 0x2>;
+                        #address-cells = <2>;
+                        #size-cells = <1>;
+                        clock-frequency = <0>; /* Filled in by wrapper */
+                };
+        };
+
+        chosen {
+                linux,stdout-path = "/plb/opb/serial@ef600300";
+        };
+};
diff --git a/arch/powerpc/boot/dts/hcu4.dts b/arch/powerpc/boot/dts/hcu4.dts
new file mode 100644
index 000000000000..7988598da4c9
--- /dev/null
+++ b/arch/powerpc/boot/dts/hcu4.dts
@@ -0,0 +1,168 @@
+/*
+* Device Tree Source for Netstal Maschinen HCU4
+* based on the IBM Walnut
+*
+* Copyright 2008
+* Niklaus Giger <niklaus.giger@member.fsf.org>
+*
+* Copyright 2007 IBM Corp.
+* Josh Boyer <jwboyer@linux.vnet.ibm.com>
+*
+* This file is licensed under the terms of the GNU General Public
+* License version 2.  This program is licensed "as is" without
+* any warranty of any kind, whether express or implied.
+*/
+
+/dts-v1/;
+
+/ {
+        #address-cells = <0x1>;
+        #size-cells = <0x1>;
+        model = "netstal,hcu4";
+        compatible = "netstal,hcu4";
+        dcr-parent = <0x1>;
+
+        aliases {
+                ethernet0 = "/plb/opb/ethernet@ef600800";
+                serial0 = "/plb/opb/serial@ef600300";
+        };
+
+        cpus {
+                #address-cells = <0x1>;
+                #size-cells = <0x0>;
+
+                cpu@0 {
+                        device_type = "cpu";
+                        model = "PowerPC,405GPr";
+                        reg = <0x0>;
+                        clock-frequency = <0>;          /* Filled in by U-Boot */
+                        timebase-frequency = <0x0>;     /* Filled in by U-Boot */
+                        i-cache-line-size = <0x20>;
+                        d-cache-line-size = <0x20>;
+                        i-cache-size = <0x4000>;
+                        d-cache-size = <0x4000>;
+                        dcr-controller;
+                        dcr-access-method = "native";
+                        linux,phandle = <0x1>;
+                };
+        };
+
+        memory {
+                device_type = "memory";
+                reg = <0x0 0x0>;        /* Filled in by U-Boot */
+        };
+
+        UIC0: interrupt-controller {
+                compatible = "ibm,uic";
+                interrupt-controller;
+                cell-index = <0x0>;
+                dcr-reg = <0xc0 0x9>;
+                #address-cells = <0x0>;
+                #size-cells = <0x0>;
+                #interrupt-cells = <0x2>;
+                linux,phandle = <0x2>;
+        };
+
+        plb {
+                compatible = "ibm,plb3";
+                #address-cells = <0x1>;
+                #size-cells = <0x1>;
+                ranges;
+                clock-frequency = <0x0>;        /* Filled in by U-Boot */
+
+                SDRAM0: memory-controller {
+                        compatible = "ibm,sdram-405gp";
+                        dcr-reg = <0x10 0x2>;
+                };
+
+                MAL: mcmal {
+                        compatible = "ibm,mcmal-405gp", "ibm,mcmal";
+                        dcr-reg = <0x180 0x62>;
+                        num-tx-chans = <0x1>;
+                        num-rx-chans = <0x1>;
+                        interrupt-parent = <0x2>;
+                        interrupts = <0xb 0x4 0xc 0x4 0xa 0x4 0xd 0x4 0xe 0x4>;
+                        linux,phandle = <0x3>;
+                };
+
+                POB0: opb {
+                        compatible = "ibm,opb-405gp", "ibm,opb";
+                        #address-cells = <0x1>;
+                        #size-cells = <0x1>;
+                        ranges = <0xef600000 0xef600000 0xa00000>;
+                        dcr-reg = <0xa0 0x5>;
+                        clock-frequency = <0x0>;        /* Filled in by U-Boot */
+
+                        UART0: serial@ef600300 {
+                                device_type = "serial";
+                                compatible = "ns16550";
+                                reg = <0xef600300 0x8>;
+                                virtual-reg = <0xef600300>;
+                                clock-frequency = <0x0>;/* Filled in by U-Boot */
+                                current-speed = <0>;    /* Filled in by U-Boot */
+                                interrupt-parent = <0x2>;
+                                interrupts = <0x0 0x4>;
+                        };
+
+                        IIC: i2c@ef600500 {
+                                compatible = "ibm,iic-405gp", "ibm,iic";
+                                reg = <0xef600500 0x11>;
+                                interrupt-parent = <0x2>;
+                                interrupts = <0x2 0x4>;
+                        };
+
+                        GPIO: gpio@ef600700 {
+                                compatible = "ibm,gpio-405gp";
+                                reg = <0xef600700 0x20>;
+                        };
+
+                        EMAC: ethernet@ef600800 {
+                                device_type = "network";
+                                compatible = "ibm,emac-405gp", "ibm,emac";
+                                interrupt-parent = <0x2>;
+                                interrupts = <0xf 0x4 0x9 0x4>;
+                                local-mac-address = [00 00 00 00 00 00];
+                                reg = <0xef600800 0x70>;
+                                mal-device = <0x3>;
+                                mal-tx-channel = <0x0>;
+                                mal-rx-channel = <0x0>;
+                                cell-index = <0x0>;
+                                max-frame-size = <0x5dc>;
+                                rx-fifo-size = <0x1000>;
+                                tx-fifo-size = <0x800>;
+                                phy-mode = "rmii";
+                                phy-map = <0x1>;
+                        };
+                };
+
+                EBC0: ebc {
+                        compatible = "ibm,ebc-405gp", "ibm,ebc";
+                        dcr-reg = <0x12 0x2>;
+                        #address-cells = <0x2>;
+                        #size-cells = <0x1>;
+                        clock-frequency = <0x0>;        /* Filled in by U-Boot */
+
+                        sram@0,0 {
+                                reg = <0x0 0x0 0x80000>;
+                        };
+
+                        flash@0,80000 {
+                                compatible = "jedec-flash";
+                                bank-width = <0x1>;
+                                reg = <0x0 0x80000 0x80000>;
+                                #address-cells = <0x1>;
+                                #size-cells = <0x1>;
+
+                                partition@0 {
+                                        label = "OpenBIOS";
+                                        reg = <0x0 0x80000>;
+                                        read-only;
+                                };
+                        };
+                };
+        };
+
+        chosen {
+                linux,stdout-path = "/plb/opb/serial@ef600300";
+        };
+};
diff --git a/arch/powerpc/boot/dts/mpc8315erdb.dts b/arch/powerpc/boot/dts/mpc8315erdb.dts
index 7449e54c1a90..6b850670de1d 100644
--- a/arch/powerpc/boot/dts/mpc8315erdb.dts
+++ b/arch/powerpc/boot/dts/mpc8315erdb.dts
@@ -121,6 +121,14 @@
                                 compatible = "dallas,ds1339";
                                 reg = <0x68>;
                         };
+
+                        mcu_pio: mcu@a {
+                                #gpio-cells = <2>;
+                                compatible = "fsl,mc9s08qg8-mpc8315erdb",
+                                             "fsl,mcu-mpc8349emitx";
+                                reg = <0x0a>;
+                                gpio-controller;
+                        };
                 };
 
                 spi@7000 {
diff --git a/arch/powerpc/boot/dts/mpc832x_mds.dts b/arch/powerpc/boot/dts/mpc832x_mds.dts
index e4cc1768f241..57c595bf1071 100644
--- a/arch/powerpc/boot/dts/mpc832x_mds.dts
+++ b/arch/powerpc/boot/dts/mpc832x_mds.dts
@@ -60,7 +60,7 @@
         };
 
         bcsr@f8000000 {
-                device_type = "board-control";
+                compatible = "fsl,mpc8323mds-bcsr";
                 reg = <0xf8000000 0x8000>;
         };
 
diff --git a/arch/powerpc/boot/dts/mpc8349emitx.dts b/arch/powerpc/boot/dts/mpc8349emitx.dts
index 5cedf373a1d8..2c9d54a35bc3 100644
--- a/arch/powerpc/boot/dts/mpc8349emitx.dts
+++ b/arch/powerpc/boot/dts/mpc8349emitx.dts
@@ -83,6 +83,14 @@
                         interrupts = <15 0x8>;
                         interrupt-parent = <&ipic>;
                         dfsrr;
+
+                        rtc@68 {
+                                device_type = "rtc";
+                                compatible = "dallas,ds1339";
+                                reg = <0x68>;
+                                interrupts = <18 0x8>;
+                                interrupt-parent = <&ipic>;
+                        };
                 };
 
                 spi@7000 {
@@ -131,6 +139,14 @@
                                 interrupt-parent = <&ipic>;
                                 interrupts = <71 8>;
                         };
+
+                        mcu_pio: mcu@a {
+                                #gpio-cells = <2>;
+                                compatible = "fsl,mc9s08qg8-mpc8349emitx",
+                                             "fsl,mcu-mpc8349emitx";
+                                reg = <0x0a>;
+                                gpio-controller;
+                        };
                 };
 
                 usb@22000 {
diff --git a/arch/powerpc/boot/dts/mpc8349emitxgp.dts b/arch/powerpc/boot/dts/mpc8349emitxgp.dts
index 81ae1d3e9440..fa40647ee62e 100644
--- a/arch/powerpc/boot/dts/mpc8349emitxgp.dts
+++ b/arch/powerpc/boot/dts/mpc8349emitxgp.dts
@@ -81,6 +81,14 @@
                         interrupts = <15 0x8>;
                         interrupt-parent = <&ipic>;
                         dfsrr;
+
+                        rtc@68 {
+                                device_type = "rtc";
+                                compatible = "dallas,ds1339";
+                                reg = <0x68>;
+                                interrupts = <18 0x8>;
+                                interrupt-parent = <&ipic>;
+                        };
                 };
 
                 spi@7000 {
diff --git a/arch/powerpc/boot/dts/mpc834x_mds.dts b/arch/powerpc/boot/dts/mpc834x_mds.dts
index 04bfde3ea605..c986c541e9bb 100644
--- a/arch/powerpc/boot/dts/mpc834x_mds.dts
+++ b/arch/powerpc/boot/dts/mpc834x_mds.dts
@@ -49,7 +49,7 @@
         };
 
         bcsr@e2400000 {
-                device_type = "board-control";
+                compatible = "fsl,mpc8349mds-bcsr";
                 reg = <0xe2400000 0x8000>;
         };
 
diff --git a/arch/powerpc/boot/dts/mpc836x_mds.dts b/arch/powerpc/boot/dts/mpc836x_mds.dts
index 66a12d2631fb..14534d04e4db 100644
--- a/arch/powerpc/boot/dts/mpc836x_mds.dts
+++ b/arch/powerpc/boot/dts/mpc836x_mds.dts
@@ -69,7 +69,7 @@
                 };
 
                 bcsr@1,0 {
-                        device_type = "board-control";
+                        compatible = "fsl,mpc8360mds-bcsr";
                         reg = <1 0 0x8000>;
                 };
         };
diff --git a/arch/powerpc/boot/dts/mpc8377_rdb.dts b/arch/powerpc/boot/dts/mpc8377_rdb.dts
index 53191ba67aaa..435ef3dd022d 100644
--- a/arch/powerpc/boot/dts/mpc8377_rdb.dts
+++ b/arch/powerpc/boot/dts/mpc8377_rdb.dts
@@ -121,6 +121,14 @@
                                 compatible = "dallas,ds1339";
                                 reg = <0x68>;
                         };
+
+                        mcu_pio: mcu@a {
+                                #gpio-cells = <2>;
+                                compatible = "fsl,mc9s08qg8-mpc8377erdb",
+                                             "fsl,mcu-mpc8349emitx";
+                                reg = <0x0a>;
+                                gpio-controller;
+                        };
                 };
 
                 i2c@3100 {
diff --git a/arch/powerpc/boot/dts/mpc8378_rdb.dts b/arch/powerpc/boot/dts/mpc8378_rdb.dts
index 4a09153d160c..b11e68f56a06 100644
--- a/arch/powerpc/boot/dts/mpc8378_rdb.dts
+++ b/arch/powerpc/boot/dts/mpc8378_rdb.dts
@@ -121,6 +121,14 @@
                                 compatible = "dallas,ds1339";
                                 reg = <0x68>;
                         };
+
+                        mcu_pio: mcu@a {
+                                #gpio-cells = <2>;
+                                compatible = "fsl,mc9s08qg8-mpc8378erdb",
+                                             "fsl,mcu-mpc8349emitx";
+                                reg = <0x0a>;
+                                gpio-controller;
+                        };
                 };
 
                 i2c@3100 {
diff --git a/arch/powerpc/boot/dts/mpc8379_rdb.dts b/arch/powerpc/boot/dts/mpc8379_rdb.dts
index bbd884ac9dc0..337af6ea26d3 100644
--- a/arch/powerpc/boot/dts/mpc8379_rdb.dts
+++ b/arch/powerpc/boot/dts/mpc8379_rdb.dts
@@ -121,6 +121,14 @@
                                 compatible = "dallas,ds1339";
                                 reg = <0x68>;
                         };
+
+                        mcu_pio: mcu@a {
+                                #gpio-cells = <2>;
+                                compatible = "fsl,mc9s08qg8-mpc8379erdb",
+                                             "fsl,mcu-mpc8349emitx";
+                                reg = <0x0a>;
+                                gpio-controller;
+                        };
                 };
 
                 i2c@3100 {
diff --git a/arch/powerpc/boot/dts/mpc8536ds.dts b/arch/powerpc/boot/dts/mpc8536ds.dts
index 93fdd99901b6..35db1e5440c7 100644
--- a/arch/powerpc/boot/dts/mpc8536ds.dts
+++ b/arch/powerpc/boot/dts/mpc8536ds.dts
@@ -109,7 +109,7 @@
                                 reg = <0x0 0x80>;
                                 cell-index = <0>;
                                 interrupt-parent = <&mpic>;
-                                interrupts = <14 0x2>;
+                                interrupts = <20 2>;
                         };
                         dma-channel@80 {
                                 compatible = "fsl,mpc8536-dma-channel",
@@ -117,7 +117,7 @@
                                 reg = <0x80 0x80>;
                                 cell-index = <1>;
                                 interrupt-parent = <&mpic>;
-                                interrupts = <15 0x2>;
+                                interrupts = <21 2>;
                         };
                         dma-channel@100 {
                                 compatible = "fsl,mpc8536-dma-channel",
@@ -125,7 +125,7 @@
                                 reg = <0x100 0x80>;
                                 cell-index = <2>;
                                 interrupt-parent = <&mpic>;
-                                interrupts = <16 0x2>;
+                                interrupts = <22 2>;
                         };
                         dma-channel@180 {
                                 compatible = "fsl,mpc8536-dma-channel",
@@ -133,7 +133,7 @@
                                 reg = <0x180 0x80>;
                                 cell-index = <3>;
                                 interrupt-parent = <&mpic>;
-                                interrupts = <17 0x2>;
+                                interrupts = <23 2>;
                         };
                 };
 
@@ -180,7 +180,7 @@
                 enet0: ethernet@24000 {
                         cell-index = <0>;
                         device_type = "network";
-                        model = "TSEC";
+                        model = "eTSEC";
                         compatible = "gianfar";
                         reg = <0x24000 0x1000>;
                         local-mac-address = [ 00 00 00 00 00 00 ];
@@ -193,7 +193,7 @@
                 enet1: ethernet@26000 {
                         cell-index = <1>;
                         device_type = "network";
-                        model = "TSEC";
+                        model = "eTSEC";
                         compatible = "gianfar";
                         reg = <0x26000 0x1000>;
                         local-mac-address = [ 00 00 00 00 00 00 ];
diff --git a/arch/powerpc/boot/dts/mpc8568mds.dts b/arch/powerpc/boot/dts/mpc8568mds.dts
index a15f10343f53..c80158f7741d 100644
--- a/arch/powerpc/boot/dts/mpc8568mds.dts
+++ b/arch/powerpc/boot/dts/mpc8568mds.dts
@@ -52,7 +52,7 @@
         };
 
         bcsr@f8000000 {
-                device_type = "board-control";
+                compatible = "fsl,mpc8568mds-bcsr";
                 reg = <0xf8000000 0x8000>;
         };
 
diff --git a/arch/powerpc/boot/dts/mpc8572ds.dts b/arch/powerpc/boot/dts/mpc8572ds.dts
index e124dd18fb5a..cadd4652a695 100644
--- a/arch/powerpc/boot/dts/mpc8572ds.dts
+++ b/arch/powerpc/boot/dts/mpc8572ds.dts
@@ -13,8 +13,8 @@
 / {
         model = "fsl,MPC8572DS";
         compatible = "fsl,MPC8572DS";
-        #address-cells = <1>;
-        #size-cells = <1>;
+        #address-cells = <2>;
+        #size-cells = <2>;
 
         aliases {
                 ethernet0 = &enet0;
@@ -61,7 +61,6 @@
 
         memory {
                 device_type = "memory";
-                reg = <0x0 0x0>;        // Filled by U-Boot
         };
 
         soc8572@ffe00000 {
@@ -69,8 +68,8 @@
                 #size-cells = <1>;
                 device_type = "soc";
                 compatible = "simple-bus";
-                ranges = <0x0 0xffe00000 0x100000>;
-                reg = <0xffe00000 0x1000>;      // CCSRBAR & soc regs, remove once parse code for immrbase fixed
+                ranges = <0x0 0 0xffe00000 0x100000>;
+                reg = <0 0xffe00000 0 0x1000>;  // CCSRBAR & soc regs, remove once parse code for immrbase fixed
                 bus-frequency = <0>;            // Filled out by uboot.
 
                 memory-controller@2000 {
@@ -351,10 +350,10 @@
                 #interrupt-cells = <1>;
                 #size-cells = <2>;
                 #address-cells = <3>;
-                reg = <0xffe08000 0x1000>;
+                reg = <0 0xffe08000 0 0x1000>;
                 bus-range = <0 255>;
-                ranges = <0x2000000 0x0 0x80000000 0x80000000 0x0 0x20000000
-                          0x1000000 0x0 0x0 0xffc00000 0x0 0x10000>;
+                ranges = <0x2000000 0x0 0x80000000 0 0x80000000 0x0 0x20000000
+                          0x1000000 0x0 0x00000000 0 0xffc00000 0x0 0x00010000>;
                 clock-frequency = <33333333>;
                 interrupt-parent = <&mpic>;
                 interrupts = <24 2>;
@@ -561,10 +560,10 @@
                 #interrupt-cells = <1>;
                 #size-cells = <2>;
                 #address-cells = <3>;
-                reg = <0xffe09000 0x1000>;
+                reg = <0 0xffe09000 0 0x1000>;
                 bus-range = <0 255>;
-                ranges = <0x2000000 0x0 0xa0000000 0xa0000000 0x0 0x20000000
-                          0x1000000 0x0 0x0 0xffc10000 0x0 0x10000>;
+                ranges = <0x2000000 0x0 0xa0000000 0 0xa0000000 0x0 0x20000000
+                          0x1000000 0x0 0x00000000 0 0xffc10000 0x0 0x00010000>;
                 clock-frequency = <33333333>;
                 interrupt-parent = <&mpic>;
                 interrupts = <26 2>;
@@ -598,10 +597,10 @@
                 #interrupt-cells = <1>;
                 #size-cells = <2>;
                 #address-cells = <3>;
-                reg = <0xffe0a000 0x1000>;
+                reg = <0 0xffe0a000 0 0x1000>;
                 bus-range = <0 255>;
-                ranges = <0x2000000 0x0 0xc0000000 0xc0000000 0x0 0x20000000
-                          0x1000000 0x0 0x0 0xffc20000 0x0 0x10000>;
+                ranges = <0x2000000 0x0 0xc0000000 0 0xc0000000 0x0 0x20000000
+                          0x1000000 0x0 0x00000000 0 0xffc20000 0x0 0x00010000>;
                 clock-frequency = <33333333>;
                 interrupt-parent = <&mpic>;
                 interrupts = <27 2>;
diff --git a/arch/powerpc/boot/libfdt-wrapper.c b/arch/powerpc/boot/libfdt-wrapper.c
index c541fd8a95d4..9276327bc2bb 100644
--- a/arch/powerpc/boot/libfdt-wrapper.c
+++ b/arch/powerpc/boot/libfdt-wrapper.c
@@ -105,6 +105,11 @@ static int fdt_wrapper_setprop(const void *devp, const char *name,
         return check_err(rc);
 }
 
+static int fdt_wrapper_del_node(const void *devp)
+{
+        return fdt_del_node(fdt, devp_offset(devp));
+}
+
 static void *fdt_wrapper_get_parent(const void *devp)
 {
         return offset_devp(fdt_parent_offset(fdt, devp_offset(devp)));
@@ -165,6 +170,7 @@ static unsigned long fdt_wrapper_finalize(void)
 void fdt_init(void *blob)
 {
         int err;
+        int bufsize;
 
         dt_ops.finddevice = fdt_wrapper_finddevice;
         dt_ops.getprop = fdt_wrapper_getprop;
@@ -173,21 +179,21 @@ void fdt_init(void *blob)
         dt_ops.create_node = fdt_wrapper_create_node;
         dt_ops.find_node_by_prop_value = fdt_wrapper_find_node_by_prop_value;
         dt_ops.find_node_by_compatible = fdt_wrapper_find_node_by_compatible;
+        dt_ops.del_node = fdt_wrapper_del_node;
         dt_ops.get_path = fdt_wrapper_get_path;
         dt_ops.finalize = fdt_wrapper_finalize;
 
         /* Make sure the dt blob is the right version and so forth */
         fdt = blob;
-        err = fdt_open_into(fdt, fdt, fdt_totalsize(blob));
-        if (err == -FDT_ERR_NOSPACE) {
-                int bufsize = fdt_totalsize(fdt) + 4;
-                buf = malloc(bufsize);
-                err = fdt_open_into(fdt, buf, bufsize);
-        }
+        bufsize = fdt_totalsize(fdt) + 4;
+        buf = malloc(bufsize);
+        if(!buf)
+                fatal("malloc failed. can't relocate the device tree\n\r");
+
+        err = fdt_open_into(fdt, buf, bufsize);
 
         if (err != 0)
                 fatal("fdt_init(): %s\n\r", fdt_strerror(err));
 
-        if (buf)
-                fdt = buf;
+        fdt = buf;
 }
diff --git a/arch/powerpc/boot/main.c b/arch/powerpc/boot/main.c
index 9e7f3ddd9913..ae32801ebd69 100644
--- a/arch/powerpc/boot/main.c
+++ b/arch/powerpc/boot/main.c
@@ -56,9 +56,19 @@ static struct addr_range prep_kernel(void)
         if (platform_ops.vmlinux_alloc) {
                 addr = platform_ops.vmlinux_alloc(ei.memsize);
         } else {
-                if ((unsigned long)_start < ei.memsize)
+                /*
+                 * Check if the kernel image (without bss) would overwrite the
+                 * bootwrapper. The device tree has been moved in fdt_init()
+                 * to an area allocated with malloc() (somewhere past _end).
+                 */
+                if ((unsigned long)_start < ei.loadsize)
                         fatal("Insufficient memory for kernel at address 0!"
-                               " (_start=%p)\n\r", _start);
+                               " (_start=%p, uncomressed size=%08x)\n\r",
+                               _start, ei.loadsize);
+
+                if ((unsigned long)_end < ei.memsize)
+                        fatal("The final kernel image would overwrite the "
+                                        "device tree\n\r");
         }
 
         /* Finally, gunzip the kernel */
diff --git a/arch/powerpc/boot/ops.h b/arch/powerpc/boot/ops.h
index 321e2f5afe71..b3218ce451bb 100644
--- a/arch/powerpc/boot/ops.h
+++ b/arch/powerpc/boot/ops.h
@@ -40,6 +40,7 @@ struct dt_ops {
                         const int buflen);
         int     (*setprop)(const void *phandle, const char *name,
                         const void *buf, const int buflen);
+        int (*del_node)(const void *phandle);
         void *(*get_parent)(const void *phandle);
         /* The node must not already exist. */
         void *(*create_node)(const void *parent, const char *name);
@@ -126,6 +127,11 @@ static inline int setprop_str(void *devp, const char *name, const char *buf)
         return -1;
 }
 
+static inline int del_node(const void *devp)
+{
+        return dt_ops.del_node ? dt_ops.del_node(devp) : -1;
+}
+
 static inline void *get_parent(const char *devp)
 {
         return dt_ops.get_parent ? dt_ops.get_parent(devp) : NULL;
diff --git a/arch/powerpc/boot/string.S b/arch/powerpc/boot/string.S
index 643e4cb2f11d..acc9428f2789 100644
--- a/arch/powerpc/boot/string.S
+++ b/arch/powerpc/boot/string.S
@@ -235,7 +235,7 @@ memchr:
         .globl  memcmp
 memcmp:
         cmpwi   0,r5,0
-        blelr
+        ble     2f
         mtctr   r5
         addi    r6,r3,-1
         addi    r4,r4,-1
@@ -244,6 +244,8 @@ memcmp:
         subf.   r3,r0,r3
         bdnzt   2,1b
         blr
+2:      li      r3,0
+        blr
 
 
 /*
diff --git a/arch/powerpc/boot/wrapper b/arch/powerpc/boot/wrapper
index ee0dc41d7c56..f39073511a49 100755
--- a/arch/powerpc/boot/wrapper
+++ b/arch/powerpc/boot/wrapper
@@ -306,11 +306,14 @@ fi
 
 # post-processing needed for some platforms
 case "$platform" in
-pseries|chrp)
+pseries)
     ${CROSS}objcopy -O binary -j .fakeelf "$kernel" "$ofile".rpanote
     $objbin/addnote "$ofile" "$ofile".rpanote
     rm -r "$ofile".rpanote
     ;;
+chrp)
+    $objbin/addnote -r c00000 "$ofile"
+    ;;
 coff)
     ${CROSS}objcopy -O aixcoff-rs6000 --set-start "$entry" "$ofile"
     $objbin/hack-coff "$ofile"
diff --git a/arch/powerpc/configs/40x/acadia_defconfig b/arch/powerpc/configs/40x/acadia_defconfig
new file mode 100644
index 000000000000..39bd9eb453f0
--- /dev/null
+++ b/arch/powerpc/configs/40x/acadia_defconfig
@@ -0,0 +1,921 @@
+#
+# Automatically generated make config: don't edit
+# Linux kernel version: 2.6.27-rc5
+# Mon Oct 13 13:47:16 2008
+#
+# CONFIG_PPC64 is not set
+
+#
+# Processor support
+#
+# CONFIG_6xx is not set
+# CONFIG_PPC_85xx is not set
+# CONFIG_PPC_8xx is not set
+CONFIG_40x=y
+# CONFIG_44x is not set
+# CONFIG_E200 is not set
+CONFIG_4xx=y
+# CONFIG_PPC_MM_SLICES is not set
+CONFIG_NOT_COHERENT_CACHE=y
+CONFIG_PPC32=y
+CONFIG_WORD_SIZE=32
+CONFIG_PPC_MERGE=y
+CONFIG_MMU=y
+CONFIG_GENERIC_CMOS_UPDATE=y
+CONFIG_GENERIC_TIME=y
+CONFIG_GENERIC_TIME_VSYSCALL=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_HARDIRQS=y
+# CONFIG_HAVE_SETUP_PER_CPU_AREA is not set
+CONFIG_IRQ_PER_CPU=y
+CONFIG_STACKTRACE_SUPPORT=y
+CONFIG_HAVE_LATENCYTOP_SUPPORT=y
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_RWSEM_XCHGADD_ALGORITHM=y
+CONFIG_ARCH_HAS_ILOG2_U32=y
+CONFIG_GENERIC_HWEIGHT=y
+CONFIG_GENERIC_CALIBRATE_DELAY=y
+CONFIG_GENERIC_FIND_NEXT_BIT=y
+# CONFIG_ARCH_NO_VIRT_TO_BUS is not set
+CONFIG_PPC=y
+CONFIG_EARLY_PRINTK=y
+CONFIG_GENERIC_NVRAM=y
+CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER=y
+CONFIG_ARCH_MAY_HAVE_PC_FDC=y
+CONFIG_PPC_OF=y
+CONFIG_OF=y
+CONFIG_PPC_UDBG_16550=y
+# CONFIG_GENERIC_TBSYNC is not set
+CONFIG_AUDIT_ARCH=y
+CONFIG_GENERIC_BUG=y
+# CONFIG_DEFAULT_UIMAGE is not set
+CONFIG_PPC_DCR_NATIVE=y
+# CONFIG_PPC_DCR_MMIO is not set
+CONFIG_PPC_DCR=y
+CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
+
+#
+# General setup
+#
+CONFIG_EXPERIMENTAL=y
+CONFIG_BROKEN_ON_SMP=y
+CONFIG_INIT_ENV_ARG_LIMIT=32
+CONFIG_LOCALVERSION=""
+CONFIG_LOCALVERSION_AUTO=y
+CONFIG_SWAP=y
+CONFIG_SYSVIPC=y
+CONFIG_SYSVIPC_SYSCTL=y
+CONFIG_POSIX_MQUEUE=y
+# CONFIG_BSD_PROCESS_ACCT is not set
+# CONFIG_TASKSTATS is not set
+# CONFIG_AUDIT is not set
+# CONFIG_IKCONFIG is not set
+CONFIG_LOG_BUF_SHIFT=14
+# CONFIG_CGROUPS is not set
+CONFIG_GROUP_SCHED=y
+# CONFIG_FAIR_GROUP_SCHED is not set
+# CONFIG_RT_GROUP_SCHED is not set
+CONFIG_USER_SCHED=y
+# CONFIG_CGROUP_SCHED is not set
+CONFIG_SYSFS_DEPRECATED=y
+CONFIG_SYSFS_DEPRECATED_V2=y
+# CONFIG_RELAY is not set
+# CONFIG_NAMESPACES is not set
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_INITRAMFS_SOURCE=""
+# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
+CONFIG_SYSCTL=y
+CONFIG_EMBEDDED=y
+CONFIG_SYSCTL_SYSCALL=y
+CONFIG_KALLSYMS=y
+CONFIG_KALLSYMS_ALL=y
+CONFIG_KALLSYMS_EXTRA_PASS=y
+CONFIG_HOTPLUG=y
+CONFIG_PRINTK=y
+CONFIG_BUG=y
+CONFIG_ELF_CORE=y
+CONFIG_COMPAT_BRK=y
+CONFIG_BASE_FULL=y
+CONFIG_FUTEX=y
+CONFIG_ANON_INODES=y
+CONFIG_EPOLL=y
+CONFIG_SIGNALFD=y
+CONFIG_TIMERFD=y
+CONFIG_EVENTFD=y
+CONFIG_SHMEM=y
+CONFIG_VM_EVENT_COUNTERS=y
+CONFIG_SLUB_DEBUG=y
+# CONFIG_SLAB is not set
+CONFIG_SLUB=y
+# CONFIG_SLOB is not set
+# CONFIG_PROFILING is not set
+# CONFIG_MARKERS is not set
+CONFIG_HAVE_OPROFILE=y
+# CONFIG_KPROBES is not set
+CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
+CONFIG_HAVE_IOREMAP_PROT=y
+CONFIG_HAVE_KPROBES=y
+CONFIG_HAVE_KRETPROBES=y
+CONFIG_HAVE_ARCH_TRACEHOOK=y
+# CONFIG_HAVE_DMA_ATTRS is not set
+# CONFIG_USE_GENERIC_SMP_HELPERS is not set
+# CONFIG_HAVE_CLK is not set
+CONFIG_PROC_PAGE_MONITOR=y
+# CONFIG_HAVE_GENERIC_DMA_COHERENT is not set
+CONFIG_SLABINFO=y
+CONFIG_RT_MUTEXES=y
+# CONFIG_TINY_SHMEM is not set
+CONFIG_BASE_SMALL=0
+CONFIG_MODULES=y
+# CONFIG_MODULE_FORCE_LOAD is not set
+CONFIG_MODULE_UNLOAD=y
+# CONFIG_MODULE_FORCE_UNLOAD is not set
+# CONFIG_MODVERSIONS is not set
+# CONFIG_MODULE_SRCVERSION_ALL is not set
+CONFIG_KMOD=y
+CONFIG_BLOCK=y
+CONFIG_LBD=y
+# CONFIG_BLK_DEV_IO_TRACE is not set
+# CONFIG_LSF is not set
+# CONFIG_BLK_DEV_BSG is not set
+# CONFIG_BLK_DEV_INTEGRITY is not set
+
+#
+# IO Schedulers
+#
+CONFIG_IOSCHED_NOOP=y
+CONFIG_IOSCHED_AS=y
+CONFIG_IOSCHED_DEADLINE=y
+CONFIG_IOSCHED_CFQ=y
+CONFIG_DEFAULT_AS=y
+# CONFIG_DEFAULT_DEADLINE is not set
+# CONFIG_DEFAULT_CFQ is not set
+# CONFIG_DEFAULT_NOOP is not set
+CONFIG_DEFAULT_IOSCHED="anticipatory"
+CONFIG_CLASSIC_RCU=y
+# CONFIG_PPC4xx_PCI_EXPRESS is not set
+
+#
+# Platform support
+#
+# CONFIG_PPC_CELL is not set
+# CONFIG_PPC_CELL_NATIVE is not set
+# CONFIG_PQ2ADS is not set
+CONFIG_ACADIA=y
+# CONFIG_EP405 is not set
+# CONFIG_KILAUEA is not set
+# CONFIG_MAKALU is not set
+# CONFIG_WALNUT is not set
+# CONFIG_XILINX_VIRTEX_GENERIC_BOARD is not set
+CONFIG_PPC40x_SIMPLE=y
+CONFIG_405EZ=y
+# CONFIG_IPIC is not set
+# CONFIG_MPIC is not set
+# CONFIG_MPIC_WEIRD is not set
+# CONFIG_PPC_I8259 is not set
+# CONFIG_PPC_RTAS is not set
+# CONFIG_MMIO_NVRAM is not set
+# CONFIG_PPC_MPC106 is not set
+# CONFIG_PPC_970_NAP is not set
+# CONFIG_PPC_INDIRECT_IO is not set
+# CONFIG_GENERIC_IOMAP is not set
+# CONFIG_CPU_FREQ is not set
+# CONFIG_FSL_ULI1575 is not set
+
+#
+# Kernel options
+#
+# CONFIG_HIGHMEM is not set
+# CONFIG_TICK_ONESHOT is not set
+# CONFIG_NO_HZ is not set
+# CONFIG_HIGH_RES_TIMERS is not set
+CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
+# CONFIG_HZ_100 is not set
+CONFIG_HZ_250=y
+# CONFIG_HZ_300 is not set
+# CONFIG_HZ_1000 is not set
+CONFIG_HZ=250
+# CONFIG_SCHED_HRTICK is not set
+CONFIG_PREEMPT_NONE=y
+# CONFIG_PREEMPT_VOLUNTARY is not set
+# CONFIG_PREEMPT is not set
+CONFIG_BINFMT_ELF=y
+# CONFIG_BINFMT_MISC is not set
+# CONFIG_MATH_EMULATION is not set
+# CONFIG_IOMMU_HELPER is not set
+CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
+CONFIG_ARCH_HAS_WALK_MEMORY=y
+CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE=y
+CONFIG_ARCH_FLATMEM_ENABLE=y
+CONFIG_ARCH_POPULATES_NODE_MAP=y
+CONFIG_SELECT_MEMORY_MODEL=y
+CONFIG_FLATMEM_MANUAL=y
+# CONFIG_DISCONTIGMEM_MANUAL is not set
+# CONFIG_SPARSEMEM_MANUAL is not set
+CONFIG_FLATMEM=y
+CONFIG_FLAT_NODE_MEM_MAP=y
+# CONFIG_SPARSEMEM_STATIC is not set
+# CONFIG_SPARSEMEM_VMEMMAP_ENABLE is not set
+CONFIG_PAGEFLAGS_EXTENDED=y
+CONFIG_SPLIT_PTLOCK_CPUS=4
+CONFIG_MIGRATION=y
+# CONFIG_RESOURCES_64BIT is not set
+CONFIG_ZONE_DMA_FLAG=1
+CONFIG_BOUNCE=y
+CONFIG_VIRT_TO_BUS=y
+CONFIG_FORCE_MAX_ZONEORDER=11
+CONFIG_PROC_DEVICETREE=y
+# CONFIG_CMDLINE_BOOL is not set
+CONFIG_EXTRA_TARGETS=""
+# CONFIG_PM is not set
+CONFIG_SECCOMP=y
+CONFIG_ISA_DMA_API=y
+
+#
+# Bus options
+#
+CONFIG_ZONE_DMA=y
+CONFIG_PPC_INDIRECT_PCI=y
+CONFIG_4xx_SOC=y
+CONFIG_PPC_PCI_CHOICE=y
+CONFIG_PCI=y
+CONFIG_PCI_DOMAINS=y
+CONFIG_PCI_SYSCALL=y
+# CONFIG_PCIEPORTBUS is not set
+CONFIG_ARCH_SUPPORTS_MSI=y
+# CONFIG_PCI_MSI is not set
+CONFIG_PCI_LEGACY=y
+# CONFIG_PCI_DEBUG is not set
+# CONFIG_PCCARD is not set
+# CONFIG_HOTPLUG_PCI is not set
+# CONFIG_HAS_RAPIDIO is not set
+
+#
+# Advanced setup
+#
+# CONFIG_ADVANCED_OPTIONS is not set
+
+#
+# Default settings for advanced configuration options are used
+#
+CONFIG_LOWMEM_SIZE=0x30000000
+CONFIG_PAGE_OFFSET=0xc0000000
+CONFIG_KERNEL_START=0xc0000000
+CONFIG_PHYSICAL_START=0x00000000
+CONFIG_TASK_SIZE=0xc0000000
+CONFIG_CONSISTENT_START=0xff100000
+CONFIG_CONSISTENT_SIZE=0x00200000
+CONFIG_NET=y
+
+#
+# Networking options
+#
+CONFIG_PACKET=y
+# CONFIG_PACKET_MMAP is not set
+CONFIG_UNIX=y
+# CONFIG_NET_KEY is not set
+CONFIG_INET=y
+# CONFIG_IP_MULTICAST is not set
+# CONFIG_IP_ADVANCED_ROUTER is not set
+CONFIG_IP_FIB_HASH=y
+CONFIG_IP_PNP=y
+CONFIG_IP_PNP_DHCP=y
+CONFIG_IP_PNP_BOOTP=y
+# CONFIG_IP_PNP_RARP is not set
+# CONFIG_NET_IPIP is not set
+# CONFIG_NET_IPGRE is not set
+# CONFIG_ARPD is not set
+# CONFIG_SYN_COOKIES is not set
+# CONFIG_INET_AH is not set
+# CONFIG_INET_ESP is not set
+# CONFIG_INET_IPCOMP is not set
+# CONFIG_INET_XFRM_TUNNEL is not set
+# CONFIG_INET_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
+# CONFIG_INET_XFRM_MODE_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_BEET is not set
+# CONFIG_INET_LRO is not set
+CONFIG_INET_DIAG=y
+CONFIG_INET_TCP_DIAG=y
+# CONFIG_TCP_CONG_ADVANCED is not set
+CONFIG_TCP_CONG_CUBIC=y
+CONFIG_DEFAULT_TCP_CONG="cubic"
+# CONFIG_TCP_MD5SIG is not set
+# CONFIG_IPV6 is not set
+# CONFIG_NETWORK_SECMARK is not set
+# CONFIG_NETFILTER is not set
+# CONFIG_IP_DCCP is not set
+# CONFIG_IP_SCTP is not set
+# CONFIG_TIPC is not set
+# CONFIG_ATM is not set
+# CONFIG_BRIDGE is not set
+# CONFIG_VLAN_8021Q is not set
+# CONFIG_DECNET is not set
+# CONFIG_LLC2 is not set
+# CONFIG_IPX is not set
+# CONFIG_ATALK is not set
+# CONFIG_X25 is not set
+# CONFIG_LAPB is not set
+# CONFIG_ECONET is not set
+# CONFIG_WAN_ROUTER is not set
+# CONFIG_NET_SCHED is not set
+
+#
+# Network testing
+#
+# CONFIG_NET_PKTGEN is not set
+# CONFIG_HAMRADIO is not set
+# CONFIG_CAN is not set
+# CONFIG_IRDA is not set
+# CONFIG_BT is not set
+# CONFIG_AF_RXRPC is not set
+
+#
+# Wireless
+#
+# CONFIG_CFG80211 is not set
+# CONFIG_WIRELESS_EXT is not set
+# CONFIG_MAC80211 is not set
+# CONFIG_IEEE80211 is not set
+# CONFIG_RFKILL is not set
+# CONFIG_NET_9P is not set
+
+#
+# Device Drivers
+#
+
+#
+# Generic Driver Options
+#
+CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
+CONFIG_STANDALONE=y
+CONFIG_PREVENT_FIRMWARE_BUILD=y
+CONFIG_FW_LOADER=y
+CONFIG_FIRMWARE_IN_KERNEL=y
+CONFIG_EXTRA_FIRMWARE=""
+# CONFIG_DEBUG_DRIVER is not set
+# CONFIG_DEBUG_DEVRES is not set
+# CONFIG_SYS_HYPERVISOR is not set
+CONFIG_CONNECTOR=y
+CONFIG_PROC_EVENTS=y
+CONFIG_MTD=y
+# CONFIG_MTD_DEBUG is not set
+# CONFIG_MTD_CONCAT is not set
+CONFIG_MTD_PARTITIONS=y
+# CONFIG_MTD_REDBOOT_PARTS is not set
+CONFIG_MTD_CMDLINE_PARTS=y
+CONFIG_MTD_OF_PARTS=y
+# CONFIG_MTD_AR7_PARTS is not set
+
+#
+# User Modules And Translation Layers
+#
+CONFIG_MTD_CHAR=y
+CONFIG_MTD_BLKDEVS=m
+CONFIG_MTD_BLOCK=m
+# CONFIG_MTD_BLOCK_RO is not set
+# CONFIG_FTL is not set
+# CONFIG_NFTL is not set
+# CONFIG_INFTL is not set
+# CONFIG_RFD_FTL is not set
+# CONFIG_SSFDC is not set
+# CONFIG_MTD_OOPS is not set
+
+#
+# RAM/ROM/Flash chip drivers
+#
+CONFIG_MTD_CFI=y
+CONFIG_MTD_JEDECPROBE=y
+CONFIG_MTD_GEN_PROBE=y
+# CONFIG_MTD_CFI_ADV_OPTIONS is not set
+CONFIG_MTD_MAP_BANK_WIDTH_1=y
+CONFIG_MTD_MAP_BANK_WIDTH_2=y
+CONFIG_MTD_MAP_BANK_WIDTH_4=y
+# CONFIG_MTD_MAP_BANK_WIDTH_8 is not set
+# CONFIG_MTD_MAP_BANK_WIDTH_16 is not set
+# CONFIG_MTD_MAP_BANK_WIDTH_32 is not set
+CONFIG_MTD_CFI_I1=y
+CONFIG_MTD_CFI_I2=y
+# CONFIG_MTD_CFI_I4 is not set
+# CONFIG_MTD_CFI_I8 is not set
+# CONFIG_MTD_CFI_INTELEXT is not set
+CONFIG_MTD_CFI_AMDSTD=y
+# CONFIG_MTD_CFI_STAA is not set
+CONFIG_MTD_CFI_UTIL=y
+# CONFIG_MTD_RAM is not set
+# CONFIG_MTD_ROM is not set
+# CONFIG_MTD_ABSENT is not set
+
+#
+# Mapping drivers for chip access
+#
+# CONFIG_MTD_COMPLEX_MAPPINGS is not set
+# CONFIG_MTD_PHYSMAP is not set
+CONFIG_MTD_PHYSMAP_OF=y
+# CONFIG_MTD_INTEL_VR_NOR is not set
+# CONFIG_MTD_PLATRAM is not set
+
+#
+# Self-contained MTD device drivers
+#
+# CONFIG_MTD_PMC551 is not set
+# CONFIG_MTD_SLRAM is not set
+# CONFIG_MTD_PHRAM is not set
+# CONFIG_MTD_MTDRAM is not set
+# CONFIG_MTD_BLOCK2MTD is not set
+
+#
+# Disk-On-Chip Device Drivers
+#
+# CONFIG_MTD_DOC2000 is not set
+# CONFIG_MTD_DOC2001 is not set
+# CONFIG_MTD_DOC2001PLUS is not set
+# CONFIG_MTD_NAND is not set
+# CONFIG_MTD_ONENAND is not set
+
+#
+# UBI - Unsorted block images
+#
+# CONFIG_MTD_UBI is not set
+CONFIG_OF_DEVICE=y
+# CONFIG_PARPORT is not set
+CONFIG_BLK_DEV=y
+# CONFIG_BLK_DEV_FD is not set
+# CONFIG_BLK_CPQ_DA is not set
+# CONFIG_BLK_CPQ_CISS_DA is not set
+# CONFIG_BLK_DEV_DAC960 is not set
+# CONFIG_BLK_DEV_UMEM is not set
+# CONFIG_BLK_DEV_COW_COMMON is not set
+# CONFIG_BLK_DEV_LOOP is not set
+# CONFIG_BLK_DEV_NBD is not set
+# CONFIG_BLK_DEV_SX8 is not set
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=16
+CONFIG_BLK_DEV_RAM_SIZE=35000
+# CONFIG_BLK_DEV_XIP is not set
+# CONFIG_CDROM_PKTCDVD is not set
+# CONFIG_ATA_OVER_ETH is not set
+# CONFIG_XILINX_SYSACE is not set
+# CONFIG_BLK_DEV_HD is not set
+# CONFIG_MISC_DEVICES is not set
+CONFIG_HAVE_IDE=y
+# CONFIG_IDE is not set
+
+#
+# SCSI device support
+#
+# CONFIG_RAID_ATTRS is not set
+# CONFIG_SCSI is not set
+# CONFIG_SCSI_DMA is not set
+# CONFIG_SCSI_NETLINK is not set
+# CONFIG_ATA is not set
+# CONFIG_MD is not set
+# CONFIG_FUSION is not set
+
+#
+# IEEE 1394 (FireWire) support
+#
+
+#
+# Enable only one of the two stacks, unless you know what you are doing
+#
+# CONFIG_FIREWIRE is not set
+# CONFIG_IEEE1394 is not set
+# CONFIG_I2O is not set
+# CONFIG_MACINTOSH_DRIVERS is not set
+CONFIG_NETDEVICES=y
+# CONFIG_DUMMY is not set
+# CONFIG_BONDING is not set
+# CONFIG_MACVLAN is not set
+# CONFIG_EQUALIZER is not set
+# CONFIG_TUN is not set
+# CONFIG_VETH is not set
+# CONFIG_ARCNET is not set
+# CONFIG_PHYLIB is not set
+CONFIG_NET_ETHERNET=y
+CONFIG_MII=y
+# CONFIG_HAPPYMEAL is not set
+# CONFIG_SUNGEM is not set
+# CONFIG_CASSINI is not set
+# CONFIG_NET_VENDOR_3COM is not set
+# CONFIG_NET_TULIP is not set
+# CONFIG_HP100 is not set
+CONFIG_IBM_NEW_EMAC=y
+CONFIG_IBM_NEW_EMAC_RXB=256
+CONFIG_IBM_NEW_EMAC_TXB=256
+CONFIG_IBM_NEW_EMAC_POLL_WEIGHT=32
+CONFIG_IBM_NEW_EMAC_RX_COPY_THRESHOLD=256
+CONFIG_IBM_NEW_EMAC_RX_SKB_HEADROOM=0
+CONFIG_IBM_NEW_EMAC_DEBUG=y
+# CONFIG_IBM_NEW_EMAC_ZMII is not set
+# CONFIG_IBM_NEW_EMAC_RGMII is not set
+# CONFIG_IBM_NEW_EMAC_TAH is not set
+# CONFIG_IBM_NEW_EMAC_EMAC4 is not set
+CONFIG_IBM_NEW_EMAC_NO_FLOW_CTRL=y
+CONFIG_IBM_NEW_EMAC_MAL_CLR_ICINTSTAT=y
+CONFIG_IBM_NEW_EMAC_MAL_COMMON_ERR=y
+# CONFIG_NET_PCI is not set
+# CONFIG_B44 is not set
+# CONFIG_NETDEV_1000 is not set
+# CONFIG_NETDEV_10000 is not set
+# CONFIG_TR is not set
+
+#
+# Wireless LAN
+#
+# CONFIG_WLAN_PRE80211 is not set
+# CONFIG_WLAN_80211 is not set
+# CONFIG_IWLWIFI_LEDS is not set
+# CONFIG_WAN is not set
+# CONFIG_FDDI is not set
+# CONFIG_HIPPI is not set
+# CONFIG_PPP is not set
+# CONFIG_SLIP is not set
+# CONFIG_NETCONSOLE is not set
+# CONFIG_NETPOLL is not set
+# CONFIG_NET_POLL_CONTROLLER is not set
+# CONFIG_ISDN is not set
+# CONFIG_PHONE is not set
+
+#
+# Input device support
+#
+# CONFIG_INPUT is not set
+
+#
+# Hardware I/O ports
+#
+# CONFIG_SERIO is not set
+# CONFIG_GAMEPORT is not set
+
+#
+# Character devices
+#
+# CONFIG_VT is not set
+CONFIG_DEVKMEM=y
+# CONFIG_SERIAL_NONSTANDARD is not set
+# CONFIG_NOZOMI is not set
+
+#
+# Serial drivers
+#
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_PCI=y
+CONFIG_SERIAL_8250_NR_UARTS=4
+CONFIG_SERIAL_8250_RUNTIME_UARTS=4
+CONFIG_SERIAL_8250_EXTENDED=y
+# CONFIG_SERIAL_8250_MANY_PORTS is not set
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+# CONFIG_SERIAL_8250_DETECT_IRQ is not set
+# CONFIG_SERIAL_8250_RSA is not set
+
+#
+# Non-8250 serial port support
+#
+# CONFIG_SERIAL_UARTLITE is not set
+CONFIG_SERIAL_CORE=y
+CONFIG_SERIAL_CORE_CONSOLE=y
+# CONFIG_SERIAL_JSM is not set
+CONFIG_SERIAL_OF_PLATFORM=y
+CONFIG_UNIX98_PTYS=y
+CONFIG_LEGACY_PTYS=y
+CONFIG_LEGACY_PTY_COUNT=256
+# CONFIG_IPMI_HANDLER is not set
+# CONFIG_HW_RANDOM is not set
+# CONFIG_NVRAM is not set
+# CONFIG_GEN_RTC is not set
+# CONFIG_R3964 is not set
+# CONFIG_APPLICOM is not set
+# CONFIG_RAW_DRIVER is not set
+# CONFIG_TCG_TPM is not set
+CONFIG_DEVPORT=y
+# CONFIG_I2C is not set
+# CONFIG_SPI is not set
+CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y
+# CONFIG_GPIOLIB is not set
+# CONFIG_W1 is not set
+# CONFIG_POWER_SUPPLY is not set
+# CONFIG_HWMON is not set
+CONFIG_THERMAL=y
+# CONFIG_WATCHDOG is not set
+
+#
+# Sonics Silicon Backplane
+#
+CONFIG_SSB_POSSIBLE=y
+# CONFIG_SSB is not set
+
+#
+# Multifunction device drivers
+#
+# CONFIG_MFD_CORE is not set
+# CONFIG_MFD_SM501 is not set
+# CONFIG_HTC_PASIC3 is not set
+# CONFIG_MFD_TMIO is not set
+
+#
+# Multimedia devices
+#
+
+#
+# Multimedia core support
+#
+# CONFIG_VIDEO_DEV is not set
+# CONFIG_DVB_CORE is not set
+# CONFIG_VIDEO_MEDIA is not set
+
+#
+# Multimedia drivers
+#
+# CONFIG_DAB is not set
+
+#
+# Graphics support
+#
+# CONFIG_AGP is not set
+# CONFIG_DRM is not set
+# CONFIG_VGASTATE is not set
+# CONFIG_VIDEO_OUTPUT_CONTROL is not set
+# CONFIG_FB is not set
+# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
+
+#
+# Display device support
+#
+# CONFIG_DISPLAY_SUPPORT is not set
+# CONFIG_SOUND is not set
+# CONFIG_USB_SUPPORT is not set
+# CONFIG_MMC is not set
+# CONFIG_MEMSTICK is not set
+# CONFIG_NEW_LEDS is not set
+# CONFIG_ACCESSIBILITY is not set
+# CONFIG_INFINIBAND is not set
+# CONFIG_EDAC is not set
+# CONFIG_RTC_CLASS is not set
+# CONFIG_DMADEVICES is not set
+# CONFIG_UIO is not set
+
+#
+# File systems
+#
+CONFIG_EXT2_FS=y
+# CONFIG_EXT2_FS_XATTR is not set
+# CONFIG_EXT2_FS_XIP is not set
+# CONFIG_EXT3_FS is not set
+# CONFIG_EXT4DEV_FS is not set
+# CONFIG_REISERFS_FS is not set
+# CONFIG_JFS_FS is not set
+# CONFIG_FS_POSIX_ACL is not set
+# CONFIG_XFS_FS is not set
+# CONFIG_OCFS2_FS is not set
+CONFIG_DNOTIFY=y
+CONFIG_INOTIFY=y
+CONFIG_INOTIFY_USER=y
+# CONFIG_QUOTA is not set
+# CONFIG_AUTOFS_FS is not set
+# CONFIG_AUTOFS4_FS is not set
+# CONFIG_FUSE_FS is not set
+
+#
+# CD-ROM/DVD Filesystems
+#
+# CONFIG_ISO9660_FS is not set
+# CONFIG_UDF_FS is not set
+
+#
+# DOS/FAT/NT Filesystems
+#
+# CONFIG_MSDOS_FS is not set
+# CONFIG_VFAT_FS is not set
+# CONFIG_NTFS_FS is not set
+
+#
+# Pseudo filesystems
+#
+CONFIG_PROC_FS=y
+CONFIG_PROC_KCORE=y
+CONFIG_PROC_SYSCTL=y
+CONFIG_SYSFS=y
+CONFIG_TMPFS=y
+# CONFIG_TMPFS_POSIX_ACL is not set
+# CONFIG_HUGETLB_PAGE is not set
+# CONFIG_CONFIGFS_FS is not set
+
+#
+# Miscellaneous filesystems
+#
+# CONFIG_ADFS_FS is not set
+# CONFIG_AFFS_FS is not set
+# CONFIG_HFS_FS is not set
+# CONFIG_HFSPLUS_FS is not set
+# CONFIG_BEFS_FS is not set
+# CONFIG_BFS_FS is not set
+# CONFIG_EFS_FS is not set
+# CONFIG_JFFS2_FS is not set
+CONFIG_CRAMFS=y
+# CONFIG_VXFS_FS is not set
+# CONFIG_MINIX_FS is not set
+# CONFIG_OMFS_FS is not set
+# CONFIG_HPFS_FS is not set
+# CONFIG_QNX4FS_FS is not set
+# CONFIG_ROMFS_FS is not set
+# CONFIG_SYSV_FS is not set
+# CONFIG_UFS_FS is not set
+CONFIG_NETWORK_FILESYSTEMS=y
+CONFIG_NFS_FS=y
+CONFIG_NFS_V3=y
+# CONFIG_NFS_V3_ACL is not set
+# CONFIG_NFS_V4 is not set
+CONFIG_ROOT_NFS=y
+# CONFIG_NFSD is not set
+CONFIG_LOCKD=y
+CONFIG_LOCKD_V4=y
+CONFIG_NFS_COMMON=y
+CONFIG_SUNRPC=y
+# CONFIG_RPCSEC_GSS_KRB5 is not set
+# CONFIG_RPCSEC_GSS_SPKM3 is not set
+# CONFIG_SMB_FS is not set
+# CONFIG_CIFS is not set
+# CONFIG_NCP_FS is not set
+# CONFIG_CODA_FS is not set
+# CONFIG_AFS_FS is not set
+
+#
+# Partition Types
+#
+# CONFIG_PARTITION_ADVANCED is not set
+CONFIG_MSDOS_PARTITION=y
+# CONFIG_NLS is not set
+# CONFIG_DLM is not set
+
+#
+# Library routines
+#
+CONFIG_BITREVERSE=y
+# CONFIG_GENERIC_FIND_FIRST_BIT is not set
+# CONFIG_CRC_CCITT is not set
+# CONFIG_CRC16 is not set
+# CONFIG_CRC_T10DIF is not set
+# CONFIG_CRC_ITU_T is not set
+CONFIG_CRC32=y
+# CONFIG_CRC7 is not set
+# CONFIG_LIBCRC32C is not set
+CONFIG_ZLIB_INFLATE=y
+CONFIG_PLIST=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT=y
+CONFIG_HAS_DMA=y
+CONFIG_HAVE_LMB=y
+
+#
+# Kernel hacking
+#
+# CONFIG_PRINTK_TIME is not set
+CONFIG_ENABLE_WARN_DEPRECATED=y
+CONFIG_ENABLE_MUST_CHECK=y
+CONFIG_FRAME_WARN=1024
+CONFIG_MAGIC_SYSRQ=y
+# CONFIG_UNUSED_SYMBOLS is not set
+CONFIG_DEBUG_FS=y
+# CONFIG_HEADERS_CHECK is not set
+CONFIG_DEBUG_KERNEL=y
+# CONFIG_DEBUG_SHIRQ is not set
+CONFIG_DETECT_SOFTLOCKUP=y
+# CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set
+CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC_VALUE=0
+CONFIG_SCHED_DEBUG=y
+# CONFIG_SCHEDSTATS is not set
+# CONFIG_TIMER_STATS is not set
+# CONFIG_DEBUG_OBJECTS is not set
+# CONFIG_SLUB_DEBUG_ON is not set
+# CONFIG_SLUB_STATS is not set
+# CONFIG_DEBUG_RT_MUTEXES is not set
+# CONFIG_RT_MUTEX_TESTER is not set
+# CONFIG_DEBUG_SPINLOCK is not set
+# CONFIG_DEBUG_MUTEXES is not set
+# CONFIG_DEBUG_SPINLOCK_SLEEP is not set
+# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
+# CONFIG_DEBUG_KOBJECT is not set
+CONFIG_DEBUG_BUGVERBOSE=y
+# CONFIG_DEBUG_INFO is not set
+# CONFIG_DEBUG_VM is not set
+# CONFIG_DEBUG_WRITECOUNT is not set
+# CONFIG_DEBUG_MEMORY_INIT is not set
+# CONFIG_DEBUG_LIST is not set
+# CONFIG_DEBUG_SG is not set
+# CONFIG_BOOT_PRINTK_DELAY is not set
+# CONFIG_RCU_TORTURE_TEST is not set
+# CONFIG_BACKTRACE_SELF_TEST is not set
+# CONFIG_FAULT_INJECTION is not set
+# CONFIG_LATENCYTOP is not set
+CONFIG_SYSCTL_SYSCALL_CHECK=y
+CONFIG_HAVE_FTRACE=y
+CONFIG_HAVE_DYNAMIC_FTRACE=y
+# CONFIG_FTRACE is not set
+# CONFIG_SCHED_TRACER is not set
+# CONFIG_CONTEXT_SWITCH_TRACER is not set
+# CONFIG_SAMPLES is not set
+CONFIG_HAVE_ARCH_KGDB=y
+# CONFIG_KGDB is not set
+# CONFIG_DEBUG_STACKOVERFLOW is not set
+# CONFIG_DEBUG_STACK_USAGE is not set
+# CONFIG_DEBUG_PAGEALLOC is not set
+# CONFIG_CODE_PATCHING_SELFTEST is not set
+# CONFIG_FTR_FIXUP_SELFTEST is not set
+# CONFIG_MSI_BITMAP_SELFTEST is not set
+# CONFIG_XMON is not set
+# CONFIG_IRQSTACKS is not set
+# CONFIG_VIRQ_DEBUG is not set
+# CONFIG_BDI_SWITCH is not set
+# CONFIG_PPC_EARLY_DEBUG is not set
+
+#
+# Security options
+#
+# CONFIG_KEYS is not set
+# CONFIG_SECURITY is not set
+# CONFIG_SECURITY_FILE_CAPABILITIES is not set
+CONFIG_CRYPTO=y
+
+#
+# Crypto core or helper
+#
+CONFIG_CRYPTO_ALGAPI=y
+CONFIG_CRYPTO_BLKCIPHER=y
+CONFIG_CRYPTO_MANAGER=y
+# CONFIG_CRYPTO_GF128MUL is not set
+# CONFIG_CRYPTO_NULL is not set
+# CONFIG_CRYPTO_CRYPTD is not set
+# CONFIG_CRYPTO_AUTHENC is not set
+# CONFIG_CRYPTO_TEST is not set
+
+#
+# Authenticated Encryption with Associated Data
+#
+# CONFIG_CRYPTO_CCM is not set
+# CONFIG_CRYPTO_GCM is not set
+# CONFIG_CRYPTO_SEQIV is not set
+
+#
+# Block modes
+#
+CONFIG_CRYPTO_CBC=y
+# CONFIG_CRYPTO_CTR is not set
+# CONFIG_CRYPTO_CTS is not set
+CONFIG_CRYPTO_ECB=y
+# CONFIG_CRYPTO_LRW is not set
+CONFIG_CRYPTO_PCBC=y
+# CONFIG_CRYPTO_XTS is not set
+
+#
+# Hash modes
+#
+# CONFIG_CRYPTO_HMAC is not set
+# CONFIG_CRYPTO_XCBC is not set
+
+#
+# Digest
+#
+# CONFIG_CRYPTO_CRC32C is not set
+# CONFIG_CRYPTO_MD4 is not set
+CONFIG_CRYPTO_MD5=y
+# CONFIG_CRYPTO_MICHAEL_MIC is not set
+# CONFIG_CRYPTO_RMD128 is not set
+# CONFIG_CRYPTO_RMD160 is not set
+# CONFIG_CRYPTO_RMD256 is not set
+# CONFIG_CRYPTO_RMD320 is not set
+# CONFIG_CRYPTO_SHA1 is not set
+# CONFIG_CRYPTO_SHA256 is not set
+# CONFIG_CRYPTO_SHA512 is not set
+# CONFIG_CRYPTO_TGR192 is not set
+# CONFIG_CRYPTO_WP512 is not set
+
+#
+# Ciphers
+#
+# CONFIG_CRYPTO_AES is not set
+# CONFIG_CRYPTO_ANUBIS is not set
+# CONFIG_CRYPTO_ARC4 is not set
+# CONFIG_CRYPTO_BLOWFISH is not set
+# CONFIG_CRYPTO_CAMELLIA is not set
+# CONFIG_CRYPTO_CAST5 is not set
+# CONFIG_CRYPTO_CAST6 is not set
+CONFIG_CRYPTO_DES=y
+# CONFIG_CRYPTO_FCRYPT is not set
+# CONFIG_CRYPTO_KHAZAD is not set
+# CONFIG_CRYPTO_SALSA20 is not set
+# CONFIG_CRYPTO_SEED is not set
+# CONFIG_CRYPTO_SERPENT is not set
+# CONFIG_CRYPTO_TEA is not set
+# CONFIG_CRYPTO_TWOFISH is not set
+
+#
+# Compression
+#
+# CONFIG_CRYPTO_DEFLATE is not set
+# CONFIG_CRYPTO_LZO is not set
+CONFIG_CRYPTO_HW=y
+# CONFIG_CRYPTO_DEV_HIFN_795X is not set
+# CONFIG_PPC_CLOCK is not set
+# CONFIG_VIRTUALIZATION is not set
diff --git a/arch/powerpc/configs/40x/hcu4_defconfig b/arch/powerpc/configs/40x/hcu4_defconfig
new file mode 100644
index 000000000000..682fce02c73a
--- /dev/null
+++ b/arch/powerpc/configs/40x/hcu4_defconfig
@@ -0,0 +1,929 @@
+#
+# Automatically generated make config: don't edit
+# Linux kernel version: 2.6.26.5
+# Tue Sep 16 00:44:33 2008
+#
+# CONFIG_PPC64 is not set
+
+#
+# Processor support
+#
+# CONFIG_6xx is not set
+# CONFIG_PPC_85xx is not set
+# CONFIG_PPC_8xx is not set
+CONFIG_40x=y
+# CONFIG_44x is not set
+# CONFIG_E200 is not set
+CONFIG_4xx=y
+# CONFIG_PPC_MM_SLICES is not set
+CONFIG_NOT_COHERENT_CACHE=y
+CONFIG_PPC32=y
+CONFIG_WORD_SIZE=32
+CONFIG_PPC_MERGE=y
+CONFIG_MMU=y
+CONFIG_GENERIC_CMOS_UPDATE=y
+CONFIG_GENERIC_TIME=y
+CONFIG_GENERIC_TIME_VSYSCALL=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_HARDIRQS=y
+# CONFIG_HAVE_SETUP_PER_CPU_AREA is not set
+CONFIG_IRQ_PER_CPU=y
+CONFIG_STACKTRACE_SUPPORT=y
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_RWSEM_XCHGADD_ALGORITHM=y
+CONFIG_ARCH_HAS_ILOG2_U32=y
+CONFIG_GENERIC_HWEIGHT=y
+CONFIG_GENERIC_CALIBRATE_DELAY=y
+CONFIG_GENERIC_FIND_NEXT_BIT=y
+# CONFIG_ARCH_NO_VIRT_TO_BUS is not set
+CONFIG_PPC=y
+CONFIG_EARLY_PRINTK=y
+CONFIG_GENERIC_NVRAM=y
+CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER=y
+CONFIG_ARCH_MAY_HAVE_PC_FDC=y
+CONFIG_PPC_OF=y
+CONFIG_OF=y
+CONFIG_PPC_UDBG_16550=y
+# CONFIG_GENERIC_TBSYNC is not set
+CONFIG_AUDIT_ARCH=y
+CONFIG_GENERIC_BUG=y
+# CONFIG_DEFAULT_UIMAGE is not set
+CONFIG_PPC_DCR_NATIVE=y
+# CONFIG_PPC_DCR_MMIO is not set
+CONFIG_PPC_DCR=y
+CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
+
+#
+# General setup
+#
+CONFIG_EXPERIMENTAL=y
+CONFIG_BROKEN_ON_SMP=y
+CONFIG_INIT_ENV_ARG_LIMIT=32
+CONFIG_LOCALVERSION=""
+CONFIG_LOCALVERSION_AUTO=y
+CONFIG_SWAP=y
+CONFIG_SYSVIPC=y
+CONFIG_SYSVIPC_SYSCTL=y
+CONFIG_POSIX_MQUEUE=y
+# CONFIG_BSD_PROCESS_ACCT is not set
+# CONFIG_TASKSTATS is not set
+# CONFIG_AUDIT is not set
+# CONFIG_IKCONFIG is not set
+CONFIG_LOG_BUF_SHIFT=14
+# CONFIG_CGROUPS is not set
+CONFIG_GROUP_SCHED=y
+CONFIG_FAIR_GROUP_SCHED=y
+# CONFIG_RT_GROUP_SCHED is not set
+CONFIG_USER_SCHED=y
+# CONFIG_CGROUP_SCHED is not set
+CONFIG_SYSFS_DEPRECATED=y
+CONFIG_SYSFS_DEPRECATED_V2=y
+# CONFIG_RELAY is not set
+# CONFIG_NAMESPACES is not set
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_INITRAMFS_SOURCE=""
+# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
+CONFIG_SYSCTL=y
+CONFIG_EMBEDDED=y
+CONFIG_SYSCTL_SYSCALL=y
+CONFIG_SYSCTL_SYSCALL_CHECK=y
+CONFIG_KALLSYMS=y
+CONFIG_KALLSYMS_ALL=y
+CONFIG_KALLSYMS_EXTRA_PASS=y
+CONFIG_HOTPLUG=y
+CONFIG_PRINTK=y
+# CONFIG_LOGBUFFER is not set
+CONFIG_BUG=y
+CONFIG_ELF_CORE=y
+CONFIG_COMPAT_BRK=y
+CONFIG_BASE_FULL=y
+CONFIG_FUTEX=y
+CONFIG_ANON_INODES=y
+CONFIG_EPOLL=y
+CONFIG_SIGNALFD=y
+CONFIG_TIMERFD=y
+CONFIG_EVENTFD=y
+CONFIG_SHMEM=y
+CONFIG_VM_EVENT_COUNTERS=y
+CONFIG_SLUB_DEBUG=y
+# CONFIG_SLAB is not set
+CONFIG_SLUB=y
+# CONFIG_SLOB is not set
+# CONFIG_PROFILING is not set
+# CONFIG_MARKERS is not set
+CONFIG_HAVE_OPROFILE=y
+# CONFIG_KPROBES is not set
+CONFIG_HAVE_KPROBES=y
+CONFIG_HAVE_KRETPROBES=y
+# CONFIG_HAVE_DMA_ATTRS is not set
+CONFIG_PROC_PAGE_MONITOR=y
+CONFIG_SLABINFO=y
+CONFIG_RT_MUTEXES=y
+# CONFIG_TINY_SHMEM is not set
+CONFIG_BASE_SMALL=0
+CONFIG_MODULES=y
+# CONFIG_MODULE_FORCE_LOAD is not set
+CONFIG_MODULE_UNLOAD=y
+# CONFIG_MODULE_FORCE_UNLOAD is not set
+# CONFIG_MODVERSIONS is not set
+# CONFIG_MODULE_SRCVERSION_ALL is not set
+CONFIG_KMOD=y
+CONFIG_BLOCK=y
+CONFIG_LBD=y
+# CONFIG_BLK_DEV_IO_TRACE is not set
+# CONFIG_LSF is not set
+# CONFIG_BLK_DEV_BSG is not set
+
+#
+# IO Schedulers
+#
+CONFIG_IOSCHED_NOOP=y
+CONFIG_IOSCHED_AS=y
+CONFIG_IOSCHED_DEADLINE=y
+CONFIG_IOSCHED_CFQ=y
+CONFIG_DEFAULT_AS=y
+# CONFIG_DEFAULT_DEADLINE is not set
+# CONFIG_DEFAULT_CFQ is not set
+# CONFIG_DEFAULT_NOOP is not set
+CONFIG_DEFAULT_IOSCHED="anticipatory"
+CONFIG_CLASSIC_RCU=y
+# CONFIG_PPC4xx_PCI_EXPRESS is not set
+
+#
+# Platform support
+#
+# CONFIG_PPC_MPC512x is not set
+# CONFIG_PPC_MPC5121 is not set
+# CONFIG_PPC_CELL is not set
+# CONFIG_PPC_CELL_NATIVE is not set
+# CONFIG_PQ2ADS is not set
+# CONFIG_EP405 is not set
+CONFIG_HCU4=y
+# CONFIG_KILAUEA is not set
+# CONFIG_MAKALU is not set
+# CONFIG_WALNUT is not set
+# CONFIG_XILINX_VIRTEX_GENERIC_BOARD is not set
+# CONFIG_IPIC is not set
+# CONFIG_MPIC is not set
+# CONFIG_MPIC_WEIRD is not set
+# CONFIG_PPC_I8259 is not set
+# CONFIG_PPC_RTAS is not set
+# CONFIG_MMIO_NVRAM is not set
+# CONFIG_PPC_MPC106 is not set
+# CONFIG_PPC_970_NAP is not set
+# CONFIG_PPC_INDIRECT_IO is not set
+# CONFIG_GENERIC_IOMAP is not set
+# CONFIG_CPU_FREQ is not set
+# CONFIG_FSL_ULI1575 is not set
+
+#
+# Kernel options
+#
+# CONFIG_HIGHMEM is not set
+# CONFIG_TICK_ONESHOT is not set
+# CONFIG_NO_HZ is not set
+# CONFIG_HIGH_RES_TIMERS is not set
+CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
+# CONFIG_HZ_100 is not set
+CONFIG_HZ_250=y
+# CONFIG_HZ_300 is not set
+# CONFIG_HZ_1000 is not set
+CONFIG_HZ=250
+# CONFIG_SCHED_HRTICK is not set
+CONFIG_PREEMPT_NONE=y
+# CONFIG_PREEMPT_VOLUNTARY is not set
+# CONFIG_PREEMPT is not set
+CONFIG_BINFMT_ELF=y
+# CONFIG_BINFMT_MISC is not set
+# CONFIG_MATH_EMULATION is not set
+# CONFIG_IOMMU_HELPER is not set
+CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
+CONFIG_ARCH_HAS_WALK_MEMORY=y
+CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE=y
+CONFIG_ARCH_FLATMEM_ENABLE=y
+CONFIG_ARCH_POPULATES_NODE_MAP=y
+CONFIG_SELECT_MEMORY_MODEL=y
+CONFIG_FLATMEM_MANUAL=y
+# CONFIG_DISCONTIGMEM_MANUAL is not set
+# CONFIG_SPARSEMEM_MANUAL is not set
+CONFIG_FLATMEM=y
+CONFIG_FLAT_NODE_MEM_MAP=y
+# CONFIG_SPARSEMEM_STATIC is not set
+# CONFIG_SPARSEMEM_VMEMMAP_ENABLE is not set
+CONFIG_PAGEFLAGS_EXTENDED=y
+CONFIG_SPLIT_PTLOCK_CPUS=4
+CONFIG_RESOURCES_64BIT=y
+CONFIG_ZONE_DMA_FLAG=1
+CONFIG_BOUNCE=y
+CONFIG_VIRT_TO_BUS=y
+CONFIG_FORCE_MAX_ZONEORDER=11
+CONFIG_PROC_DEVICETREE=y
+# CONFIG_CMDLINE_BOOL is not set
+# CONFIG_PM is not set
+CONFIG_SECCOMP=y
+CONFIG_ISA_DMA_API=y
+
+#
+# Bus options
+#
+CONFIG_ZONE_DMA=y
+CONFIG_PPC_INDIRECT_PCI=y
+CONFIG_4xx_SOC=y
+CONFIG_PCI=y
+CONFIG_PCI_DOMAINS=y
+CONFIG_PCI_SYSCALL=y
+# CONFIG_PCIEPORTBUS is not set
+CONFIG_ARCH_SUPPORTS_MSI=y
+# CONFIG_PCI_MSI is not set
+# CONFIG_PCI_LEGACY is not set
+# CONFIG_PCI_DEBUG is not set
+# CONFIG_PCCARD is not set
+# CONFIG_HOTPLUG_PCI is not set
+# CONFIG_HAS_RAPIDIO is not set
+
+#
+# Advanced setup
+#
+# CONFIG_ADVANCED_OPTIONS is not set
+
+#
+# Default settings for advanced configuration options are used
+#
+CONFIG_LOWMEM_SIZE=0x30000000
+CONFIG_PAGE_OFFSET=0xc0000000
+CONFIG_KERNEL_START=0xc0000000
+CONFIG_PHYSICAL_START=0x00000000
+CONFIG_TASK_SIZE=0xc0000000
+CONFIG_CONSISTENT_START=0xff100000
+CONFIG_CONSISTENT_SIZE=0x00200000
+
+#
+# Networking
+#
+CONFIG_NET=y
+
+#
+# Networking options
+#
+CONFIG_PACKET=y
+# CONFIG_PACKET_MMAP is not set
+CONFIG_UNIX=y
+# CONFIG_NET_KEY is not set
+CONFIG_INET=y
+# CONFIG_IP_MULTICAST is not set
+# CONFIG_IP_ADVANCED_ROUTER is not set
+CONFIG_IP_FIB_HASH=y
+CONFIG_IP_PNP=y
+CONFIG_IP_PNP_DHCP=y
+CONFIG_IP_PNP_BOOTP=y
+# CONFIG_IP_PNP_RARP is not set
+# CONFIG_NET_IPIP is not set
+# CONFIG_NET_IPGRE is not set
+# CONFIG_ARPD is not set
+# CONFIG_SYN_COOKIES is not set
+# CONFIG_INET_AH is not set
+# CONFIG_INET_ESP is not set
+# CONFIG_INET_IPCOMP is not set
+# CONFIG_INET_XFRM_TUNNEL is not set
+# CONFIG_INET_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
+# CONFIG_INET_XFRM_MODE_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_BEET is not set
+# CONFIG_INET_LRO is not set
+CONFIG_INET_DIAG=y
+CONFIG_INET_TCP_DIAG=y
+# CONFIG_TCP_CONG_ADVANCED is not set
+CONFIG_TCP_CONG_CUBIC=y
+CONFIG_DEFAULT_TCP_CONG="cubic"
+# CONFIG_TCP_MD5SIG is not set
+# CONFIG_IPV6 is not set
+# CONFIG_NETWORK_SECMARK is not set
+# CONFIG_NETFILTER is not set
+# CONFIG_IP_DCCP is not set
+# CONFIG_IP_SCTP is not set
+# CONFIG_TIPC is not set
+# CONFIG_ATM is not set
+# CONFIG_BRIDGE is not set
+# CONFIG_VLAN_8021Q is not set
+# CONFIG_DECNET is not set
+# CONFIG_LLC2 is not set
+# CONFIG_IPX is not set
+# CONFIG_ATALK is not set
+# CONFIG_X25 is not set
+# CONFIG_LAPB is not set
+# CONFIG_ECONET is not set
+# CONFIG_WAN_ROUTER is not set
+# CONFIG_NET_SCHED is not set
+
+#
+# Network testing
+#
+# CONFIG_NET_PKTGEN is not set
+# CONFIG_HAMRADIO is not set
+# CONFIG_CAN is not set
+# CONFIG_IRDA is not set
+# CONFIG_BT is not set
+# CONFIG_AF_RXRPC is not set
+
+#
+# Wireless
+#
+# CONFIG_CFG80211 is not set
+# CONFIG_WIRELESS_EXT is not set
+# CONFIG_MAC80211 is not set
+# CONFIG_IEEE80211 is not set
+# CONFIG_RFKILL is not set
+# CONFIG_NET_9P is not set
+
+#
+# Device Drivers
+#
+
+#
+# Generic Driver Options
+#
+CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
+CONFIG_STANDALONE=y
+CONFIG_PREVENT_FIRMWARE_BUILD=y
+CONFIG_FW_LOADER=y
+# CONFIG_DEBUG_DRIVER is not set
+# CONFIG_DEBUG_DEVRES is not set
+# CONFIG_SYS_HYPERVISOR is not set
+CONFIG_CONNECTOR=y
+CONFIG_PROC_EVENTS=y
+CONFIG_MTD=y
+# CONFIG_MTD_DEBUG is not set
+# CONFIG_MTD_CONCAT is not set
+CONFIG_MTD_PARTITIONS=y
+# CONFIG_MTD_REDBOOT_PARTS is not set
+CONFIG_MTD_CMDLINE_PARTS=y
+CONFIG_MTD_OF_PARTS=y
+# CONFIG_MTD_AR7_PARTS is not set
+
+#
+# User Modules And Translation Layers
+#
+CONFIG_MTD_CHAR=y
+CONFIG_MTD_BLKDEVS=m
+CONFIG_MTD_BLOCK=m
+# CONFIG_MTD_BLOCK_RO is not set
+# CONFIG_FTL is not set
+# CONFIG_NFTL is not set
+# CONFIG_INFTL is not set
+# CONFIG_RFD_FTL is not set
+# CONFIG_SSFDC is not set
+# CONFIG_MTD_OOPS is not set
+
+#
+# RAM/ROM/Flash chip drivers
+#
+CONFIG_MTD_CFI=y
+CONFIG_MTD_JEDECPROBE=y
+CONFIG_MTD_GEN_PROBE=y
+# CONFIG_MTD_CFI_ADV_OPTIONS is not set
+CONFIG_MTD_MAP_BANK_WIDTH_1=y
+CONFIG_MTD_MAP_BANK_WIDTH_2=y
+CONFIG_MTD_MAP_BANK_WIDTH_4=y
+# CONFIG_MTD_MAP_BANK_WIDTH_8 is not set
+# CONFIG_MTD_MAP_BANK_WIDTH_16 is not set
+# CONFIG_MTD_MAP_BANK_WIDTH_32 is not set
+CONFIG_MTD_CFI_I1=y
+CONFIG_MTD_CFI_I2=y
+# CONFIG_MTD_CFI_I4 is not set
+# CONFIG_MTD_CFI_I8 is not set
+# CONFIG_MTD_CFI_INTELEXT is not set
+CONFIG_MTD_CFI_AMDSTD=y
+# CONFIG_MTD_CFI_STAA is not set
+CONFIG_MTD_CFI_UTIL=y
+# CONFIG_MTD_RAM is not set
+# CONFIG_MTD_ROM is not set
+# CONFIG_MTD_ABSENT is not set
+
+#
+# Mapping drivers for chip access
+#
+# CONFIG_MTD_COMPLEX_MAPPINGS is not set
+# CONFIG_MTD_PHYSMAP is not set
+CONFIG_MTD_PHYSMAP_OF=y
+# CONFIG_MTD_INTEL_VR_NOR is not set
+# CONFIG_MTD_PLATRAM is not set
+
+#
+# Self-contained MTD device drivers
+#
+# CONFIG_MTD_PMC551 is not set
+# CONFIG_MTD_SLRAM is not set
+# CONFIG_MTD_PHRAM is not set
+# CONFIG_MTD_MTDRAM is not set
+# CONFIG_MTD_BLOCK2MTD is not set
+
+#
+# Disk-On-Chip Device Drivers
+#
+# CONFIG_MTD_DOC2000 is not set
+# CONFIG_MTD_DOC2001 is not set
+# CONFIG_MTD_DOC2001PLUS is not set
+# CONFIG_MTD_NAND is not set
+# CONFIG_MTD_ONENAND is not set
+
+#
+# UBI - Unsorted block images
+#
+# CONFIG_MTD_UBI is not set
+CONFIG_OF_DEVICE=y
+# CONFIG_PARPORT is not set
+CONFIG_BLK_DEV=y
+# CONFIG_BLK_DEV_FD is not set
+# CONFIG_BLK_CPQ_DA is not set
+# CONFIG_BLK_CPQ_CISS_DA is not set
+# CONFIG_BLK_DEV_DAC960 is not set
+# CONFIG_BLK_DEV_UMEM is not set
+# CONFIG_BLK_DEV_COW_COMMON is not set
+# CONFIG_BLK_DEV_LOOP is not set
+# CONFIG_BLK_DEV_NBD is not set
+# CONFIG_BLK_DEV_SX8 is not set
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=16
+CONFIG_BLK_DEV_RAM_SIZE=35000
+# CONFIG_BLK_DEV_XIP is not set
+# CONFIG_CDROM_PKTCDVD is not set
+# CONFIG_ATA_OVER_ETH is not set
+# CONFIG_XILINX_SYSACE is not set
+CONFIG_MISC_DEVICES=y
+# CONFIG_PHANTOM is not set
+# CONFIG_EEPROM_93CX6 is not set
+# CONFIG_SGI_IOC4 is not set
+# CONFIG_TIFM_CORE is not set
+# CONFIG_ENCLOSURE_SERVICES is not set
+CONFIG_HAVE_IDE=y
+# CONFIG_IDE is not set
+
+#
+# SCSI device support
+#
+# CONFIG_RAID_ATTRS is not set
+# CONFIG_SCSI is not set
+# CONFIG_SCSI_DMA is not set
+# CONFIG_SCSI_NETLINK is not set
+# CONFIG_ATA is not set
+# CONFIG_MD is not set
+# CONFIG_FUSION is not set
+
+#
+# IEEE 1394 (FireWire) support
+#
+
+#
+# Enable only one of the two stacks, unless you know what you are doing
+#
+# CONFIG_FIREWIRE is not set
+# CONFIG_IEEE1394 is not set
+# CONFIG_I2O is not set
+# CONFIG_MACINTOSH_DRIVERS is not set
+CONFIG_NETDEVICES=y
+# CONFIG_NETDEVICES_MULTIQUEUE is not set
+# CONFIG_DUMMY is not set
+# CONFIG_BONDING is not set
+# CONFIG_MACVLAN is not set
+# CONFIG_EQUALIZER is not set
+# CONFIG_TUN is not set
+# CONFIG_VETH is not set
+# CONFIG_ARCNET is not set
+# CONFIG_PHYLIB is not set
+CONFIG_NET_ETHERNET=y
+# CONFIG_MII is not set
+# CONFIG_HAPPYMEAL is not set
+# CONFIG_SUNGEM is not set
+# CONFIG_CASSINI is not set
+# CONFIG_NET_VENDOR_3COM is not set
+# CONFIG_NET_TULIP is not set
+# CONFIG_HP100 is not set
+CONFIG_IBM_NEW_EMAC=y
+CONFIG_IBM_NEW_EMAC_RXB=128
+CONFIG_IBM_NEW_EMAC_TXB=64
+CONFIG_IBM_NEW_EMAC_POLL_WEIGHT=32
+CONFIG_IBM_NEW_EMAC_RX_COPY_THRESHOLD=256
+CONFIG_IBM_NEW_EMAC_RX_SKB_HEADROOM=0
+# CONFIG_IBM_NEW_EMAC_DEBUG is not set
+# CONFIG_IBM_NEW_EMAC_ZMII is not set
+# CONFIG_IBM_NEW_EMAC_RGMII is not set
+# CONFIG_IBM_NEW_EMAC_TAH is not set
+# CONFIG_IBM_NEW_EMAC_EMAC4 is not set
+# CONFIG_NET_PCI is not set
+# CONFIG_B44 is not set
+CONFIG_NETDEV_1000=y
+# CONFIG_ACENIC is not set
+# CONFIG_DL2K is not set
+# CONFIG_E1000 is not set
+# CONFIG_E1000E is not set
+# CONFIG_E1000E_ENABLED is not set
+# CONFIG_IP1000 is not set
+# CONFIG_IGB is not set
+# CONFIG_NS83820 is not set
+# CONFIG_HAMACHI is not set
+# CONFIG_YELLOWFIN is not set
+# CONFIG_R8169 is not set
+# CONFIG_SIS190 is not set
+# CONFIG_SKGE is not set
+# CONFIG_SKY2 is not set
+# CONFIG_VIA_VELOCITY is not set
+# CONFIG_TIGON3 is not set
+# CONFIG_BNX2 is not set
+# CONFIG_QLA3XXX is not set
+# CONFIG_ATL1 is not set
+CONFIG_NETDEV_10000=y
+# CONFIG_CHELSIO_T1 is not set
+# CONFIG_CHELSIO_T3 is not set
+# CONFIG_IXGBE is not set
+# CONFIG_IXGB is not set
+# CONFIG_S2IO is not set
+# CONFIG_MYRI10GE is not set
+# CONFIG_NETXEN_NIC is not set
+# CONFIG_NIU is not set
+# CONFIG_MLX4_CORE is not set
+# CONFIG_TEHUTI is not set
+# CONFIG_BNX2X is not set
+# CONFIG_SFC is not set
+# CONFIG_TR is not set
+
+#
+# Wireless LAN
+#
+# CONFIG_WLAN_PRE80211 is not set
+# CONFIG_WLAN_80211 is not set
+# CONFIG_IWLWIFI_LEDS is not set
+# CONFIG_WAN is not set
+# CONFIG_FDDI is not set
+# CONFIG_HIPPI is not set
+# CONFIG_PPP is not set
+# CONFIG_SLIP is not set
+# CONFIG_NETCONSOLE is not set
+# CONFIG_NETPOLL is not set
+# CONFIG_NET_POLL_CONTROLLER is not set
+# CONFIG_ISDN is not set
+# CONFIG_PHONE is not set
+
+#
+# Input device support
+#
+# CONFIG_INPUT is not set
+
+#
+# Hardware I/O ports
+#
+# CONFIG_SERIO is not set
+# CONFIG_GAMEPORT is not set
+
+#
+# Character devices
+#
+# CONFIG_VT is not set
+CONFIG_DEVKMEM=y
+# CONFIG_SERIAL_NONSTANDARD is not set
+# CONFIG_NOZOMI is not set
+
+#
+# Serial drivers
+#
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_PCI=y
+CONFIG_SERIAL_8250_NR_UARTS=4
+CONFIG_SERIAL_8250_RUNTIME_UARTS=4
+CONFIG_SERIAL_8250_EXTENDED=y
+# CONFIG_SERIAL_8250_MANY_PORTS is not set
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+# CONFIG_SERIAL_8250_DETECT_IRQ is not set
+# CONFIG_SERIAL_8250_RSA is not set
+
+#
+# Non-8250 serial port support
+#
+# CONFIG_SERIAL_UARTLITE is not set
+CONFIG_SERIAL_CORE=y
+CONFIG_SERIAL_CORE_CONSOLE=y
+# CONFIG_SERIAL_JSM is not set
+CONFIG_SERIAL_OF_PLATFORM=y
+CONFIG_UNIX98_PTYS=y
+CONFIG_LEGACY_PTYS=y
+CONFIG_LEGACY_PTY_COUNT=256
+# CONFIG_IPMI_HANDLER is not set
+# CONFIG_HW_RANDOM is not set
+# CONFIG_NVRAM is not set
+# CONFIG_GEN_RTC is not set
+# CONFIG_R3964 is not set
+# CONFIG_APPLICOM is not set
+# CONFIG_RAW_DRIVER is not set
+# CONFIG_TCG_TPM is not set
+CONFIG_DEVPORT=y
+# CONFIG_I2C is not set
+# CONFIG_SPI is not set
+# CONFIG_W1 is not set
+# CONFIG_POWER_SUPPLY is not set
+# CONFIG_HWMON is not set
+# CONFIG_THERMAL is not set
+# CONFIG_THERMAL_HWMON is not set
+# CONFIG_WATCHDOG is not set
+
+#
+# Sonics Silicon Backplane
+#
+CONFIG_SSB_POSSIBLE=y
+# CONFIG_SSB is not set
+
+#
+# Multifunction device drivers
+#
+# CONFIG_MFD_SM501 is not set
+# CONFIG_HTC_PASIC3 is not set
+
+#
+# Multimedia devices
+#
+
+#
+# Multimedia core support
+#
+# CONFIG_VIDEO_DEV is not set
+# CONFIG_DVB_CORE is not set
+# CONFIG_VIDEO_MEDIA is not set
+
+#
+# Multimedia drivers
+#
+# CONFIG_DAB is not set
+
+#
+# Graphics support
+#
+# CONFIG_AGP is not set
+# CONFIG_DRM is not set
+# CONFIG_VGASTATE is not set
+CONFIG_VIDEO_OUTPUT_CONTROL=m
+# CONFIG_FB is not set
+# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
+
+#
+# Display device support
+#
+# CONFIG_DISPLAY_SUPPORT is not set
+
+#
+# Sound
+#
+# CONFIG_SOUND is not set
+# CONFIG_USB_SUPPORT is not set
+# CONFIG_MMC is not set
+# CONFIG_MEMSTICK is not set
+# CONFIG_NEW_LEDS is not set
+# CONFIG_ACCESSIBILITY is not set
+# CONFIG_INFINIBAND is not set
+# CONFIG_EDAC is not set
+# CONFIG_RTC_CLASS is not set
+# CONFIG_DMADEVICES is not set
+# CONFIG_UIO is not set
+
+#
+# File systems
+#
+CONFIG_EXT2_FS=y
+# CONFIG_EXT2_FS_XATTR is not set
+# CONFIG_EXT2_FS_XIP is not set
+# CONFIG_EXT3_FS is not set
+# CONFIG_EXT4DEV_FS is not set
+# CONFIG_REISERFS_FS is not set
+# CONFIG_JFS_FS is not set
+# CONFIG_FS_POSIX_ACL is not set
+# CONFIG_XFS_FS is not set
+# CONFIG_OCFS2_FS is not set
+CONFIG_DNOTIFY=y
+CONFIG_INOTIFY=y
+CONFIG_INOTIFY_USER=y
+# CONFIG_QUOTA is not set
+# CONFIG_AUTOFS_FS is not set
+# CONFIG_AUTOFS4_FS is not set
+# CONFIG_FUSE_FS is not set
+
+#
+# CD-ROM/DVD Filesystems
+#
+# CONFIG_ISO9660_FS is not set
+# CONFIG_UDF_FS is not set
+
+#
+# DOS/FAT/NT Filesystems
+#
+# CONFIG_MSDOS_FS is not set
+# CONFIG_VFAT_FS is not set
+# CONFIG_NTFS_FS is not set
+
+#
+# Pseudo filesystems
+#
+CONFIG_PROC_FS=y
+CONFIG_PROC_KCORE=y
+CONFIG_PROC_SYSCTL=y
+CONFIG_SYSFS=y
+CONFIG_TMPFS=y
+# CONFIG_TMPFS_POSIX_ACL is not set
+# CONFIG_HUGETLB_PAGE is not set
+# CONFIG_CONFIGFS_FS is not set
+
+#
+# Miscellaneous filesystems
+#
+# CONFIG_ADFS_FS is not set
+# CONFIG_AFFS_FS is not set
+# CONFIG_HFS_FS is not set
+# CONFIG_HFSPLUS_FS is not set
+# CONFIG_BEFS_FS is not set
+# CONFIG_BFS_FS is not set
+# CONFIG_EFS_FS is not set
+# CONFIG_YAFFS_FS is not set
+# CONFIG_JFFS2_FS is not set
+CONFIG_CRAMFS=y
+# CONFIG_VXFS_FS is not set
+# CONFIG_MINIX_FS is not set
+# CONFIG_HPFS_FS is not set
+# CONFIG_QNX4FS_FS is not set
+# CONFIG_ROMFS_FS is not set
+# CONFIG_SYSV_FS is not set
+# CONFIG_UFS_FS is not set
+CONFIG_NETWORK_FILESYSTEMS=y
+CONFIG_NFS_FS=y
+CONFIG_NFS_V3=y
+# CONFIG_NFS_V3_ACL is not set
+# CONFIG_NFS_V4 is not set
+# CONFIG_NFSD is not set
+CONFIG_ROOT_NFS=y
+CONFIG_LOCKD=y
+CONFIG_LOCKD_V4=y
+CONFIG_NFS_COMMON=y
+CONFIG_SUNRPC=y
+# CONFIG_SUNRPC_BIND34 is not set
+# CONFIG_RPCSEC_GSS_KRB5 is not set
+# CONFIG_RPCSEC_GSS_SPKM3 is not set
+# CONFIG_SMB_FS is not set
+# CONFIG_CIFS is not set
+# CONFIG_NCP_FS is not set
+# CONFIG_CODA_FS is not set
+# CONFIG_AFS_FS is not set
+
+#
+# Partition Types
+#
+# CONFIG_PARTITION_ADVANCED is not set
+CONFIG_MSDOS_PARTITION=y
+# CONFIG_NLS is not set
+# CONFIG_DLM is not set
+
+#
+# Library routines
+#
+CONFIG_BITREVERSE=y
+# CONFIG_GENERIC_FIND_FIRST_BIT is not set
+# CONFIG_CRC_CCITT is not set
+# CONFIG_CRC16 is not set
+# CONFIG_CRC_ITU_T is not set
+CONFIG_CRC32=y
+# CONFIG_CRC7 is not set
+# CONFIG_LIBCRC32C is not set
+CONFIG_ZLIB_INFLATE=y
+CONFIG_PLIST=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT=y
+CONFIG_HAS_DMA=y
+CONFIG_HAVE_LMB=y
+
+#
+# Kernel hacking
+#
+# CONFIG_PRINTK_TIME is not set
+CONFIG_ENABLE_WARN_DEPRECATED=y
+CONFIG_ENABLE_MUST_CHECK=y
+CONFIG_FRAME_WARN=1024
+CONFIG_MAGIC_SYSRQ=y
+# CONFIG_UNUSED_SYMBOLS is not set
+CONFIG_DEBUG_FS=y
+# CONFIG_HEADERS_CHECK is not set
+CONFIG_DEBUG_KERNEL=y
+# CONFIG_DEBUG_SHIRQ is not set
+CONFIG_DETECT_SOFTLOCKUP=y
+CONFIG_SCHED_DEBUG=y
+# CONFIG_SCHEDSTATS is not set
+# CONFIG_TIMER_STATS is not set
+# CONFIG_DEBUG_OBJECTS is not set
+# CONFIG_SLUB_DEBUG_ON is not set
+# CONFIG_SLUB_STATS is not set
+# CONFIG_DEBUG_RT_MUTEXES is not set
+# CONFIG_RT_MUTEX_TESTER is not set
+# CONFIG_DEBUG_SPINLOCK is not set
+# CONFIG_DEBUG_MUTEXES is not set
+# CONFIG_DEBUG_SPINLOCK_SLEEP is not set
+# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
+# CONFIG_DEBUG_KOBJECT is not set
+CONFIG_DEBUG_BUGVERBOSE=y
+# CONFIG_DEBUG_INFO is not set
+# CONFIG_DEBUG_VM is not set
+# CONFIG_DEBUG_WRITECOUNT is not set
+# CONFIG_DEBUG_LIST is not set
+# CONFIG_DEBUG_SG is not set
+# CONFIG_BOOT_PRINTK_DELAY is not set
+# CONFIG_RCU_TORTURE_TEST is not set
+# CONFIG_BACKTRACE_SELF_TEST is not set
+# CONFIG_FAULT_INJECTION is not set
+# CONFIG_SAMPLES is not set
+# CONFIG_DEBUG_STACKOVERFLOW is not set
+# CONFIG_DEBUG_STACK_USAGE is not set
+# CONFIG_DEBUG_PAGEALLOC is not set
+# CONFIG_DEBUGGER is not set
+# CONFIG_IRQSTACKS is not set
+# CONFIG_VIRQ_DEBUG is not set
+# CONFIG_BDI_SWITCH is not set
+# CONFIG_PPC_EARLY_DEBUG is not set
+
+#
+# Security options
+#
+# CONFIG_KEYS is not set
+# CONFIG_SECURITY is not set
+# CONFIG_SECURITY_FILE_CAPABILITIES is not set
+CONFIG_CRYPTO=y
+
+#
+# Crypto core or helper
+#
+CONFIG_CRYPTO_ALGAPI=y
+CONFIG_CRYPTO_BLKCIPHER=y
+CONFIG_CRYPTO_MANAGER=y
+# CONFIG_CRYPTO_GF128MUL is not set
+# CONFIG_CRYPTO_NULL is not set
+# CONFIG_CRYPTO_CRYPTD is not set
+# CONFIG_CRYPTO_AUTHENC is not set
+# CONFIG_CRYPTO_TEST is not set
+
+#
+# Authenticated Encryption with Associated Data
+#
+# CONFIG_CRYPTO_CCM is not set
+# CONFIG_CRYPTO_GCM is not set
+# CONFIG_CRYPTO_SEQIV is not set
+
+#
+# Block modes
+#
+CONFIG_CRYPTO_CBC=y
+# CONFIG_CRYPTO_CTR is not set
+# CONFIG_CRYPTO_CTS is not set
+CONFIG_CRYPTO_ECB=y
+# CONFIG_CRYPTO_LRW is not set
+CONFIG_CRYPTO_PCBC=y
+# CONFIG_CRYPTO_XTS is not set
+
+#
+# Hash modes
+#
+# CONFIG_CRYPTO_HMAC is not set
+# CONFIG_CRYPTO_XCBC is not set
+
+#
+# Digest
+#
+# CONFIG_CRYPTO_CRC32C is not set
+# CONFIG_CRYPTO_MD4 is not set
+CONFIG_CRYPTO_MD5=y
+# CONFIG_CRYPTO_MICHAEL_MIC is not set
+# CONFIG_CRYPTO_SHA1 is not set
+# CONFIG_CRYPTO_SHA256 is not set
+# CONFIG_CRYPTO_SHA512 is not set
+# CONFIG_CRYPTO_TGR192 is not set
+# CONFIG_CRYPTO_WP512 is not set
+
+#
+# Ciphers
+#
+# CONFIG_CRYPTO_AES is not set
+# CONFIG_CRYPTO_ANUBIS is not set
+# CONFIG_CRYPTO_ARC4 is not set
+# CONFIG_CRYPTO_BLOWFISH is not set
+# CONFIG_CRYPTO_CAMELLIA is not set
+# CONFIG_CRYPTO_CAST5 is not set
+# CONFIG_CRYPTO_CAST6 is not set
+CONFIG_CRYPTO_DES=y
+# CONFIG_CRYPTO_FCRYPT is not set
+# CONFIG_CRYPTO_KHAZAD is not set
+# CONFIG_CRYPTO_SALSA20 is not set
+# CONFIG_CRYPTO_SEED is not set
+# CONFIG_CRYPTO_SERPENT is not set
+# CONFIG_CRYPTO_TEA is not set
+# CONFIG_CRYPTO_TWOFISH is not set
+
+#
+# Compression
+#
+# CONFIG_CRYPTO_DEFLATE is not set
+# CONFIG_CRYPTO_LZO is not set
+CONFIG_CRYPTO_HW=y
+# CONFIG_CRYPTO_DEV_HIFN_795X is not set
+# CONFIG_PPC_CLOCK is not set
+# CONFIG_VIRTUALIZATION is not set
diff --git a/arch/powerpc/include/asm/kdump.h b/arch/powerpc/include/asm/kdump.h
index f6c93c716898..a503da9d56f3 100644
--- a/arch/powerpc/include/asm/kdump.h
+++ b/arch/powerpc/include/asm/kdump.h
@@ -9,6 +9,12 @@
  * Reserve to the end of the FWNMI area, see head_64.S */
 #define KDUMP_RESERVE_LIMIT     0x10000 /* 64K */
 
+/*
+ * Used to differentiate between relocatable kdump kernel and other
+ * kernels
+ */
+#define KDUMP_SIGNATURE 0xfeed1234
+
 #ifdef CONFIG_CRASH_DUMP
 
 #define KDUMP_TRAMPOLINE_START  0x0100
@@ -19,17 +25,18 @@
 #endif /* CONFIG_CRASH_DUMP */
 
 #ifndef __ASSEMBLY__
-#ifdef CONFIG_CRASH_DUMP
 
+extern unsigned long __kdump_flag;
+
+#if defined(CONFIG_CRASH_DUMP) && !defined(CONFIG_RELOCATABLE)
 extern void reserve_kdump_trampoline(void);
 extern void setup_kdump_trampoline(void);
-
-#else /* !CONFIG_CRASH_DUMP */
-
+#else
+/* !CRASH_DUMP || RELOCATABLE */
 static inline void reserve_kdump_trampoline(void) { ; }
 static inline void setup_kdump_trampoline(void) { ; }
+#endif
 
-#endif /* CONFIG_CRASH_DUMP */
 #endif /* __ASSEMBLY__ */
 
 #endif /* __PPC64_KDUMP_H */
diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h
index 5ac51e6efc1d..c0b8d4a29a91 100644
--- a/arch/powerpc/include/asm/page.h
+++ b/arch/powerpc/include/asm/page.h
@@ -77,6 +77,7 @@
 
 #if defined(CONFIG_RELOCATABLE)
 #ifndef __ASSEMBLY__
+
 extern phys_addr_t memstart_addr;
 extern phys_addr_t kernstart_addr;
 #endif
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index e70d0483fb4e..b1eb834bc0fc 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -1277,6 +1277,19 @@ static struct cpu_spec __initdata cpu_specs[] = {
                 .machine_check          = machine_check_4xx,
                 .platform               = "ppc405",
         },
+        {
+                /* 405EZ */
+                .pvr_mask               = 0xffff0000,
+                .pvr_value              = 0x41510000,
+                .cpu_name               = "405EZ",
+                .cpu_features           = CPU_FTRS_40X,
+                .cpu_user_features      = PPC_FEATURE_32 |
+                        PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
+                .icache_bsize           = 32,
+                .dcache_bsize           = 32,
+                .machine_check          = machine_check_4xx,
+                .platform               = "ppc405",
+        },
         {       /* default match */
                 .pvr_mask               = 0x00000000,
                 .pvr_value              = 0x00000000,
diff --git a/arch/powerpc/kernel/crash_dump.c b/arch/powerpc/kernel/crash_dump.c
index 97e056379728..19671aca6591 100644
--- a/arch/powerpc/kernel/crash_dump.c
+++ b/arch/powerpc/kernel/crash_dump.c
@@ -30,6 +30,7 @@
 /* Stores the physical address of elf header of crash image. */
 unsigned long long elfcorehdr_addr = ELFCORE_ADDR_MAX;
 
+#ifndef CONFIG_RELOCATABLE
 void __init reserve_kdump_trampoline(void)
 {
         lmb_reserve(0, KDUMP_RESERVE_LIMIT);
@@ -68,6 +69,7 @@ void __init setup_kdump_trampoline(void)
 
         DBG(" <- setup_kdump_trampoline()\n");
 }
+#endif /* CONFIG_RELOCATABLE */
 
 /*
  * Note: elfcorehdr_addr is not just limited to vmcore. It is also used by
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index 84856bee33a5..69489bd3210c 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -97,6 +97,12 @@ __secondary_hold_spinloop:
 __secondary_hold_acknowledge:
         .llong  0x0
 
+        /* This flag is set by purgatory if we should be a kdump kernel. */
+        /* Do not move this variable as purgatory knows about it. */
+        .globl  __kdump_flag
+__kdump_flag:
+        .llong  0x0
+
 #ifdef CONFIG_PPC_ISERIES
         /*
          * At offset 0x20, there is a pointer to iSeries LPAR data.
@@ -1384,7 +1390,13 @@ _STATIC(__after_prom_start)
         /* process relocations for the final address of the kernel */
         lis     r25,PAGE_OFFSET@highest /* compute virtual base of kernel */
         sldi    r25,r25,32
-        mr      r3,r25
+#ifdef CONFIG_CRASH_DUMP
+        ld      r7,__kdump_flag-_stext(r26)
+        cmpldi  cr0,r7,1        /* kdump kernel ? - stay where we are */
+        bne     1f
+        add     r25,r25,r26
+#endif
+1:      mr      r3,r25
         bl      .relocate
 #endif
 
@@ -1398,11 +1410,26 @@ _STATIC(__after_prom_start)
         li      r3,0                    /* target addr */
         mr.     r4,r26                  /* In some cases the loader may  */
         beq     9f                      /* have already put us at zero */
-        lis     r5,(copy_to_here - _stext)@ha
-        addi    r5,r5,(copy_to_here - _stext)@l /* # bytes of memory to copy */
         li      r6,0x100                /* Start offset, the first 0x100 */
                                         /* bytes were copied earlier.    */
 
+#ifdef CONFIG_CRASH_DUMP
+/*
+ * Check if the kernel has to be running as relocatable kernel based on the
+ * variable __kdump_flag, if it is set the kernel is treated as relocatable
+ * kernel, otherwise it will be moved to PHYSICAL_START
+ */
+        ld      r7,__kdump_flag-_stext(r26)
+        cmpldi  cr0,r7,1
+        bne     3f
+
+        li      r5,__end_interrupts - _stext    /* just copy interrupts */
+        b       5f
+3:
+#endif
+        lis     r5,(copy_to_here - _stext)@ha
+        addi    r5,r5,(copy_to_here - _stext)@l /* # bytes of memory to copy */
+
         bl      .copy_and_flush         /* copy the first n bytes        */
                                         /* this includes the code being  */
                                         /* executed here.                */
@@ -1411,15 +1438,15 @@ _STATIC(__after_prom_start)
         mtctr   r8
         bctr
 
+p_end:  .llong  _end - _stext
+
 4:      /* Now copy the rest of the kernel up to _end */
         addis   r5,r26,(p_end - _stext)@ha
         ld      r5,(p_end - _stext)@l(r5)       /* get _end */
-        bl      .copy_and_flush         /* copy the rest */
+5:      bl      .copy_and_flush         /* copy the rest */
 
 9:      b       .start_here_multiplatform
 
-p_end:  .llong  _end - _stext
-
 /*
  * Copy routine used to copy the kernel to start at physical address 0
  * and flush and invalidate the caches as needed.
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index ea1ba89f9c90..3857d7e2af0c 100644
--- a/arch/powerpc/kernel/iommu.c
+++ b/arch/powerpc/kernel/iommu.c
@@ -458,6 +458,42 @@ void iommu_unmap_sg(struct iommu_table *tbl, struct scatterlist *sglist,
         spin_unlock_irqrestore(&(tbl->it_lock), flags);
 }
 
+static void iommu_table_clear(struct iommu_table *tbl)
+{
+        if (!__kdump_flag) {
+                /* Clear the table in case firmware left allocations in it */
+                ppc_md.tce_free(tbl, tbl->it_offset, tbl->it_size);
+                return;
+        }
+
+#ifdef CONFIG_CRASH_DUMP
+        if (ppc_md.tce_get) {
+                unsigned long index, tceval, tcecount = 0;
+
+                /* Reserve the existing mappings left by the first kernel. */
+                for (index = 0; index < tbl->it_size; index++) {
+                        tceval = ppc_md.tce_get(tbl, index + tbl->it_offset);
+                        /*
+                         * Freed TCE entry contains 0x7fffffffffffffff on JS20
+                         */
+                        if (tceval && (tceval != 0x7fffffffffffffffUL)) {
+                                __set_bit(index, tbl->it_map);
+                                tcecount++;
+                        }
+                }
+
+                if ((tbl->it_size - tcecount) < KDUMP_MIN_TCE_ENTRIES) {
+                        printk(KERN_WARNING "TCE table is full; freeing ");
+                        printk(KERN_WARNING "%d entries for the kdump boot\n",
+                                KDUMP_MIN_TCE_ENTRIES);
+                        for (index = tbl->it_size - KDUMP_MIN_TCE_ENTRIES;
+                                index < tbl->it_size; index++)
+                                __clear_bit(index, tbl->it_map);
+                }
+        }
+#endif
+}
+
 /*
  * Build a iommu_table structure.  This contains a bit map which
  * is used to manage allocation of the tce space.
@@ -484,38 +520,7 @@ struct iommu_table *iommu_init_table(struct iommu_table *tbl, int nid)
         tbl->it_largehint = tbl->it_halfpoint;
         spin_lock_init(&tbl->it_lock);
 
-#ifdef CONFIG_CRASH_DUMP
-        if (ppc_md.tce_get) {
-                unsigned long index;
-                unsigned long tceval;
-                unsigned long tcecount = 0;
-
-                /*
-                 * Reserve the existing mappings left by the first kernel.
-                 */
-                for (index = 0; index < tbl->it_size; index++) {
-                        tceval = ppc_md.tce_get(tbl, index + tbl->it_offset);
-                        /*
-                         * Freed TCE entry contains 0x7fffffffffffffff on JS20
-                         */
-                        if (tceval && (tceval != 0x7fffffffffffffffUL)) {
-                                __set_bit(index, tbl->it_map);
-                                tcecount++;
-                        }
-                }
-                if ((tbl->it_size - tcecount) < KDUMP_MIN_TCE_ENTRIES) {
-                        printk(KERN_WARNING "TCE table is full; ");
-                        printk(KERN_WARNING "freeing %d entries for the kdump boot\n",
-                                KDUMP_MIN_TCE_ENTRIES);
-                        for (index = tbl->it_size - KDUMP_MIN_TCE_ENTRIES;
-                                index < tbl->it_size; index++)
-                                __clear_bit(index, tbl->it_map);
-                }
-        }
-#else
-        /* Clear the hardware table in case firmware left allocations in it */
-        ppc_md.tce_free(tbl, tbl->it_offset, tbl->it_size);
-#endif
+        iommu_table_clear(tbl);
 
         if (!welcomed) {
                 printk(KERN_INFO "IOMMU table initialized, virtual merging %s\n",
diff --git a/arch/powerpc/kernel/machine_kexec.c b/arch/powerpc/kernel/machine_kexec.c
index aab76887a842..ac2a21f45c75 100644
--- a/arch/powerpc/kernel/machine_kexec.c
+++ b/arch/powerpc/kernel/machine_kexec.c
@@ -88,11 +88,13 @@ void __init reserve_crashkernel(void)
 
         crash_size = crashk_res.end - crashk_res.start + 1;
 
+#ifndef CONFIG_RELOCATABLE
         if (crashk_res.start != KDUMP_KERNELBASE)
                 printk("Crash kernel location must be 0x%x\n",
                                 KDUMP_KERNELBASE);
 
         crashk_res.start = KDUMP_KERNELBASE;
+#endif
         crash_size = PAGE_ALIGN(crash_size);
         crashk_res.end = crashk_res.start + crash_size - 1;
 
diff --git a/arch/powerpc/kernel/machine_kexec_64.c b/arch/powerpc/kernel/machine_kexec_64.c
index a168514d8609..e6efec788c4d 100644
--- a/arch/powerpc/kernel/machine_kexec_64.c
+++ b/arch/powerpc/kernel/machine_kexec_64.c
@@ -255,11 +255,14 @@ static union thread_union kexec_stack
 /* Our assembly helper, in kexec_stub.S */
 extern NORET_TYPE void kexec_sequence(void *newstack, unsigned long start,
                                         void *image, void *control,
-                                        void (*clear_all)(void)) ATTRIB_NORET;
+                                        void (*clear_all)(void),
+                                        unsigned long kdump_flag) ATTRIB_NORET;
 
 /* too late to fail here */
 void default_machine_kexec(struct kimage *image)
 {
+        unsigned long kdump_flag = 0;
+
         /* prepare control code if any */
 
         /*
@@ -270,8 +273,10 @@ void default_machine_kexec(struct kimage *image)
         * using debugger IPI.
         */
 
-       if (crashing_cpu == -1)
-               kexec_prepare_cpus();
+        if (crashing_cpu == -1)
+                kexec_prepare_cpus();
+        else
+                kdump_flag = KDUMP_SIGNATURE;
 
         /* switch to a staticly allocated stack.  Based on irq stack code.
          * XXX: the task struct will likely be invalid once we do the copy!
@@ -284,7 +289,7 @@ void default_machine_kexec(struct kimage *image)
          */
         kexec_sequence(&kexec_stack, image->start, image,
                         page_address(image->control_code_page),
-                        ppc_md.hpte_clear_all);
+                        ppc_md.hpte_clear_all, kdump_flag);
         /* NOTREACHED */
 }
 
@@ -312,11 +317,24 @@ static struct property kernel_end_prop = {
 static void __init export_htab_values(void)
 {
         struct device_node *node;
+        struct property *prop;
 
         node = of_find_node_by_path("/chosen");
         if (!node)
                 return;
 
+        /* remove any stale propertys so ours can be found */
+        prop = of_find_property(node, kernel_end_prop.name, NULL);
+        if (prop)
+                prom_remove_property(node, prop);
+        prop = of_find_property(node, htab_base_prop.name, NULL);
+        if (prop)
+                prom_remove_property(node, prop);
+        prop = of_find_property(node, htab_size_prop.name, NULL);
+        if (prop)
+                prom_remove_property(node, prop);
+
+        /* information needed by userspace when using default_machine_kexec */
         kernel_end = __pa(_end);
         prom_add_property(node, &kernel_end_prop);
 
diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
index 3053fe5c62f2..a243fd072a77 100644
--- a/arch/powerpc/kernel/misc_64.S
+++ b/arch/powerpc/kernel/misc_64.S
@@ -611,10 +611,12 @@ real_mode:	/* assume normal blr return */
 
 
 /*
- * kexec_sequence(newstack, start, image, control, clear_all())
+ * kexec_sequence(newstack, start, image, control, clear_all(), kdump_flag)
  *
  * does the grungy work with stack switching and real mode switches
  * also does simple calls to other code
+ *
+ * kdump_flag says whether the next kernel should be a kdump kernel.
  */
 
 _GLOBAL(kexec_sequence)
@@ -647,7 +649,7 @@ _GLOBAL(kexec_sequence)
         mr      r29,r5                  /* image (virt) */
         mr      r28,r6                  /* control, unused */
         mr      r27,r7                  /* clear_all() fn desc */
-        mr      r26,r8                  /* spare */
+        mr      r26,r8                  /* kdump flag */
         lhz     r25,PACAHWCPUID(r13)    /* get our phys cpu from paca */
 
         /* disable interrupts, we are overwriting kernel data next */
@@ -709,5 +711,6 @@ _GLOBAL(kexec_sequence)
         mr      r4,r30  # start, aka phys mem offset
         mtlr    4
         li      r5,0
-        blr     /* image->start(physid, image->start, 0); */
+        mr      r6,r26                  /* kdump_flag */
+        blr     /* image->start(physid, image->start, 0, kdump_flag); */
 #endif /* CONFIG_KEXEC */
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 3815d84a1ef4..1ec73938a00f 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -610,7 +610,8 @@ int pci_mmap_legacy_page_range(struct pci_bus *bus,
         pr_debug(" -> mapping phys %llx\n", (unsigned long long)offset);
 
         vma->vm_pgoff = offset >> PAGE_SHIFT;
-        vma->vm_page_prot |= _PAGE_NO_CACHE | _PAGE_GUARDED;
+        vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot)
+                                     | _PAGE_NO_CACHE | _PAGE_GUARDED);
         return remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
                                vma->vm_end - vma->vm_start,
                                vma->vm_page_prot);
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 2fdbc18ae94a..23e0db203329 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -487,67 +487,6 @@ static int __init prom_setprop(phandle node, const char *nodename,
         return call_prom("interpret", 1, 1, (u32)(unsigned long) cmd);
 }
 
-/* We can't use the standard versions because of RELOC headaches. */
-#define isxdigit(c)     (('0' <= (c) && (c) <= '9') \
-                         || ('a' <= (c) && (c) <= 'f') \
-                         || ('A' <= (c) && (c) <= 'F'))
-
-#define isdigit(c)      ('0' <= (c) && (c) <= '9')
-#define islower(c)      ('a' <= (c) && (c) <= 'z')
-#define toupper(c)      (islower(c) ? ((c) - 'a' + 'A') : (c))
-
-unsigned long prom_strtoul(const char *cp, const char **endp)
-{
-        unsigned long result = 0, base = 10, value;
-
-        if (*cp == '0') {
-                base = 8;
-                cp++;
-                if (toupper(*cp) == 'X') {
-                        cp++;
-                        base = 16;
-                }
-        }
-
-        while (isxdigit(*cp) &&
-               (value = isdigit(*cp) ? *cp - '0' : toupper(*cp) - 'A' + 10) < base) {
-                result = result * base + value;
-                cp++;
-        }
-
-        if (endp)
-                *endp = cp;
-
-        return result;
-}
-
-unsigned long prom_memparse(const char *ptr, const char **retptr)
-{
-        unsigned long ret = prom_strtoul(ptr, retptr);
-        int shift = 0;
-
-        /*
-         * We can't use a switch here because GCC *may* generate a
-         * jump table which won't work, because we're not running at
-         * the address we're linked at.
-         */
-        if ('G' == **retptr || 'g' == **retptr)
-                shift = 30;
-
-        if ('M' == **retptr || 'm' == **retptr)
-                shift = 20;
-
-        if ('K' == **retptr || 'k' == **retptr)
-                shift = 10;
-
-        if (shift) {
-                ret <<= shift;
-                (*retptr)++;
-        }
-
-        return ret;
-}
-
 /*
  * Early parsing of the command line passed to the kernel, used for
  * "mem=x" and the options that affect the iommu
diff --git a/arch/powerpc/kernel/prom_init_check.sh b/arch/powerpc/kernel/prom_init_check.sh
index 2c7e8e87f770..ea3a2ec03ffa 100644
--- a/arch/powerpc/kernel/prom_init_check.sh
+++ b/arch/powerpc/kernel/prom_init_check.sh
@@ -20,7 +20,7 @@ WHITELIST="add_reloc_offset __bss_start __bss_stop copy_and_flush
 _end enter_prom memcpy memset reloc_offset __secondary_hold
 __secondary_hold_acknowledge __secondary_hold_spinloop __start
 strcmp strcpy strlcpy strlen strncmp strstr logo_linux_clut224
-reloc_got2 kernstart_addr"
+reloc_got2 kernstart_addr memstart_addr"
 
 NM="$1"
 OBJ="$2"
diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c
index 5ec56ff03e86..705fc4bf3800 100644
--- a/arch/powerpc/kernel/setup-common.c
+++ b/arch/powerpc/kernel/setup-common.c
@@ -59,6 +59,7 @@
 #include <asm/mmu.h>
 #include <asm/xmon.h>
 #include <asm/cputhreads.h>
+#include <mm/mmu_decl.h>
 
 #include "setup.h"
 
@@ -190,6 +191,12 @@ static int show_cpuinfo(struct seq_file *m, void *v)
                 if (ppc_md.show_cpuinfo != NULL)
                         ppc_md.show_cpuinfo(m);
 
+#ifdef CONFIG_PPC32
+                /* Display the amount of memory */
+                seq_printf(m, "Memory\t\t: %d MB\n",
+                           (unsigned int)(total_memory / (1024 * 1024)));
+#endif
+
                 return 0;
         }
 
diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c
index 65ad925c3a8f..c6a8f2326b6f 100644
--- a/arch/powerpc/kernel/signal_64.c
+++ b/arch/powerpc/kernel/signal_64.c
@@ -235,8 +235,6 @@ static long restore_sigcontext(struct pt_regs *regs, sigset_t *set, int sig,
         else
                 for (i = 0; i < 32 ; i++)
                         current->thread.fpr[i][TS_VSRLOWOFFSET] = 0;
-
-#else
 #endif
         return err;
 }
diff --git a/arch/powerpc/kernel/udbg_16550.c b/arch/powerpc/kernel/udbg_16550.c
index cb01ebc59387..7b7da8cfd5e8 100644
--- a/arch/powerpc/kernel/udbg_16550.c
+++ b/arch/powerpc/kernel/udbg_16550.c
@@ -142,7 +142,7 @@ unsigned int udbg_probe_uart_speed(void __iomem *comport, unsigned int clock)
         speed = (clock / prescaler) / (divisor * 16);
 
         /* sanity check */
-        if (speed < 0 || speed > (clock / 16))
+        if (speed > (clock / 16))
                 speed = 9600;
 
         return speed;
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 5c64af174752..8d5b4758c13a 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -382,8 +382,10 @@ static int __init htab_dt_scan_hugepage_blocks(unsigned long node,
         printk(KERN_INFO "Huge page(16GB) memory: "
                         "addr = 0x%lX size = 0x%lX pages = %d\n",
                         phys_addr, block_size, expected_pages);
-        lmb_reserve(phys_addr, block_size * expected_pages);
-        add_gpage(phys_addr, block_size, expected_pages);
+        if (phys_addr + (16 * GB) <= lmb_end_of_DRAM()) {
+                lmb_reserve(phys_addr, block_size * expected_pages);
+                add_gpage(phys_addr, block_size, expected_pages);
+        }
         return 0;
 }
 #endif /* CONFIG_HUGETLB_PAGE */
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 6cf5c71c431f..eb505ad34a85 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -116,6 +116,7 @@ static int __init get_active_region_work_fn(unsigned long start_pfn,
 
 /*
  * get_node_active_region - Return active region containing start_pfn
+ * Active range returned is empty if none found.
  * @start_pfn: The page to return the region for.
  * @node_ar: Returned set to the active region containing start_pfn
  */
@@ -126,6 +127,7 @@ static void __init get_node_active_region(unsigned long start_pfn,
 
         node_ar->nid = nid;
         node_ar->start_pfn = start_pfn;
+        node_ar->end_pfn = start_pfn;
         work_with_active_regions(nid, get_active_region_work_fn, node_ar);
 }
 
@@ -526,12 +528,10 @@ static unsigned long __init numa_enforce_memory_limit(unsigned long start,
         /*
          * We use lmb_end_of_DRAM() in here instead of memory_limit because
          * we've already adjusted it for the limit and it takes care of
-         * having memory holes below the limit.
+         * having memory holes below the limit.  Also, in the case of
+         * iommu_is_off, memory_limit is not set but is implicitly enforced.
          */
 
-        if (! memory_limit)
-                return size;
-
         if (start + size <= lmb_end_of_DRAM())
                 return size;
 
@@ -933,18 +933,20 @@ void __init do_init_bootmem(void)
                 struct node_active_region node_ar;
 
                 get_node_active_region(start_pfn, &node_ar);
-                while (start_pfn < end_pfn) {
+                while (start_pfn < end_pfn &&
+                        node_ar.start_pfn < node_ar.end_pfn) {
+                        unsigned long reserve_size = size;
                         /*
                          * if reserved region extends past active region
                          * then trim size to active region
                          */
                         if (end_pfn > node_ar.end_pfn)
-                                size = (node_ar.end_pfn << PAGE_SHIFT)
+                                reserve_size = (node_ar.end_pfn << PAGE_SHIFT)
                                         - (start_pfn << PAGE_SHIFT);
-                        dbg("reserve_bootmem %lx %lx nid=%d\n", physbase, size,
-                                node_ar.nid);
+                        dbg("reserve_bootmem %lx %lx nid=%d\n", physbase,
+                                reserve_size, node_ar.nid);
                         reserve_bootmem_node(NODE_DATA(node_ar.nid), physbase,
-                                                size, BOOTMEM_DEFAULT);
+                                                reserve_size, BOOTMEM_DEFAULT);
                         /*
                          * if reserved region is contained in the active region
                          * then done.
@@ -959,6 +961,7 @@ void __init do_init_bootmem(void)
                          */
                         start_pfn = node_ar.end_pfn;
                         physbase = start_pfn << PAGE_SHIFT;
+                        size = size - reserve_size;
                         get_node_active_region(start_pfn, &node_ar);
                 }
 
diff --git a/arch/powerpc/oprofile/cell/pr_util.h b/arch/powerpc/oprofile/cell/pr_util.h
index 22e4e8d4eb2c..628009c01958 100644
--- a/arch/powerpc/oprofile/cell/pr_util.h
+++ b/arch/powerpc/oprofile/cell/pr_util.h
@@ -24,6 +24,11 @@
 #define SKIP_GENERIC_SYNC 0
 #define SYNC_START_ERROR -1
 #define DO_GENERIC_SYNC 1
+#define SPUS_PER_NODE   8
+#define DEFAULT_TIMER_EXPIRE  (HZ / 10)
+
+extern struct delayed_work spu_work;
+extern int spu_prof_running;
 
 struct spu_overlay_info {       /* map of sections within an SPU overlay */
         unsigned int vma;       /* SPU virtual memory address from elf */
@@ -62,6 +67,14 @@ struct vma_to_fileoffset_map {	/* map of sections within an SPU program */
 
 };
 
+struct spu_buffer {
+        int last_guard_val;
+        int ctx_sw_seen;
+        unsigned long *buff;
+        unsigned int head, tail;
+};
+
+
 /* The three functions below are for maintaining and accessing
  * the vma-to-fileoffset map.
  */
diff --git a/arch/powerpc/oprofile/cell/spu_profiler.c b/arch/powerpc/oprofile/cell/spu_profiler.c
index 380d7e217531..6edaebd5099a 100644
--- a/arch/powerpc/oprofile/cell/spu_profiler.c
+++ b/arch/powerpc/oprofile/cell/spu_profiler.c
@@ -23,12 +23,11 @@
 
 static u32 *samples;
 
-static int spu_prof_running;
+int spu_prof_running;
 static unsigned int profiling_interval;
 
 #define NUM_SPU_BITS_TRBUF 16
 #define SPUS_PER_TB_ENTRY   4
-#define SPUS_PER_NODE        8
 
 #define SPU_PC_MASK          0xFFFF
 
@@ -208,6 +207,7 @@ int start_spu_profiling(unsigned int cycles_reset)
 
         spu_prof_running = 1;
         hrtimer_start(&timer, kt, HRTIMER_MODE_REL);
+        schedule_delayed_work(&spu_work, DEFAULT_TIMER_EXPIRE);
 
         return 0;
 }
diff --git a/arch/powerpc/oprofile/cell/spu_task_sync.c b/arch/powerpc/oprofile/cell/spu_task_sync.c
index 2a9b4a049329..2949126d28d1 100644
--- a/arch/powerpc/oprofile/cell/spu_task_sync.c
+++ b/arch/powerpc/oprofile/cell/spu_task_sync.c
@@ -35,7 +35,102 @@ static DEFINE_SPINLOCK(buffer_lock);
 static DEFINE_SPINLOCK(cache_lock);
 static int num_spu_nodes;
 int spu_prof_num_nodes;
-int last_guard_val[MAX_NUMNODES * 8];
+
+struct spu_buffer spu_buff[MAX_NUMNODES * SPUS_PER_NODE];
+struct delayed_work spu_work;
+static unsigned max_spu_buff;
+
+static void spu_buff_add(unsigned long int value, int spu)
+{
+        /* spu buff is a circular buffer.  Add entries to the
+         * head.  Head is the index to store the next value.
+         * The buffer is full when there is one available entry
+         * in the queue, i.e. head and tail can't be equal.
+         * That way we can tell the difference between the
+         * buffer being full versus empty.
+         *
+         *  ASSUPTION: the buffer_lock is held when this function
+         *             is called to lock the buffer, head and tail.
+         */
+        int full = 1;
+
+        if (spu_buff[spu].head >= spu_buff[spu].tail) {
+                if ((spu_buff[spu].head - spu_buff[spu].tail)
+                    <  (max_spu_buff - 1))
+                        full = 0;
+
+        } else if (spu_buff[spu].tail > spu_buff[spu].head) {
+                if ((spu_buff[spu].tail - spu_buff[spu].head)
+                    > 1)
+                        full = 0;
+        }
+
+        if (!full) {
+                spu_buff[spu].buff[spu_buff[spu].head] = value;
+                spu_buff[spu].head++;
+
+                if (spu_buff[spu].head >= max_spu_buff)
+                        spu_buff[spu].head = 0;
+        } else {
+                /* From the user's perspective make the SPU buffer
+                 * size management/overflow look like we are using
+                 * per cpu buffers.  The user uses the same
+                 * per cpu parameter to adjust the SPU buffer size.
+                 * Increment the sample_lost_overflow to inform
+                 * the user the buffer size needs to be increased.
+                 */
+                oprofile_cpu_buffer_inc_smpl_lost();
+        }
+}
+
+/* This function copies the per SPU buffers to the
+ * OProfile kernel buffer.
+ */
+void sync_spu_buff(void)
+{
+        int spu;
+        unsigned long flags;
+        int curr_head;
+
+        for (spu = 0; spu < num_spu_nodes; spu++) {
+                /* In case there was an issue and the buffer didn't
+                 * get created skip it.
+                 */
+                if (spu_buff[spu].buff == NULL)
+                        continue;
+
+                /* Hold the lock to make sure the head/tail
+                 * doesn't change while spu_buff_add() is
+                 * deciding if the buffer is full or not.
+                 * Being a little paranoid.
+                 */
+                spin_lock_irqsave(&buffer_lock, flags);
+                curr_head = spu_buff[spu].head;
+                spin_unlock_irqrestore(&buffer_lock, flags);
+
+                /* Transfer the current contents to the kernel buffer.
+                 * data can still be added to the head of the buffer.
+                 */
+                oprofile_put_buff(spu_buff[spu].buff,
+                                  spu_buff[spu].tail,
+                                  curr_head, max_spu_buff);
+
+                spin_lock_irqsave(&buffer_lock, flags);
+                spu_buff[spu].tail = curr_head;
+                spin_unlock_irqrestore(&buffer_lock, flags);
+        }
+
+}
+
+static void wq_sync_spu_buff(struct work_struct *work)
+{
+        /* move data from spu buffers to kernel buffer */
+        sync_spu_buff();
+
+        /* only reschedule if profiling is not done */
+        if (spu_prof_running)
+                schedule_delayed_work(&spu_work, DEFAULT_TIMER_EXPIRE);
+}
 
 /* Container for caching information about an active SPU task. */
 struct cached_info {
@@ -305,14 +400,21 @@ static int process_context_switch(struct spu *spu, unsigned long objectId)
 
         /* Record context info in event buffer */
         spin_lock_irqsave(&buffer_lock, flags);
-        add_event_entry(ESCAPE_CODE);
-        add_event_entry(SPU_CTX_SWITCH_CODE);
-        add_event_entry(spu->number);
-        add_event_entry(spu->pid);
-        add_event_entry(spu->tgid);
-        add_event_entry(app_dcookie);
-        add_event_entry(spu_cookie);
-        add_event_entry(offset);
+        spu_buff_add(ESCAPE_CODE, spu->number);
+        spu_buff_add(SPU_CTX_SWITCH_CODE, spu->number);
+        spu_buff_add(spu->number, spu->number);
+        spu_buff_add(spu->pid, spu->number);
+        spu_buff_add(spu->tgid, spu->number);
+        spu_buff_add(app_dcookie, spu->number);
+        spu_buff_add(spu_cookie, spu->number);
+        spu_buff_add(offset, spu->number);
+
+        /* Set flag to indicate SPU PC data can now be written out.  If
+         * the SPU program counter data is seen before an SPU context
+         * record is seen, the postprocessing will fail.
+         */
+        spu_buff[spu->number].ctx_sw_seen = 1;
+
         spin_unlock_irqrestore(&buffer_lock, flags);
         smp_wmb();      /* insure spu event buffer updates are written */
                         /* don't want entries intermingled... */
@@ -360,6 +462,47 @@ static int number_of_online_nodes(void)
         return nodes;
 }
 
+static int oprofile_spu_buff_create(void)
+{
+        int spu;
+
+        max_spu_buff = oprofile_get_cpu_buffer_size();
+
+        for (spu = 0; spu < num_spu_nodes; spu++) {
+                /* create circular buffers to store the data in.
+                 * use locks to manage accessing the buffers
+                 */
+                spu_buff[spu].head = 0;
+                spu_buff[spu].tail = 0;
+
+                /*
+                 * Create a buffer for each SPU.  Can't reliably
+                 * create a single buffer for all spus due to not
+                 * enough contiguous kernel memory.
+                 */
+
+                spu_buff[spu].buff = kzalloc((max_spu_buff
+                                              * sizeof(unsigned long)),
+                                             GFP_KERNEL);
+
+                if (!spu_buff[spu].buff) {
+                        printk(KERN_ERR "SPU_PROF: "
+                               "%s, line %d:  oprofile_spu_buff_create "
+                       "failed to allocate spu buffer %d.\n",
+                               __func__, __LINE__, spu);
+
+                        /* release the spu buffers that have been allocated */
+                        while (spu >= 0) {
+                                kfree(spu_buff[spu].buff);
+                                spu_buff[spu].buff = 0;
+                                spu--;
+                        }
+                        return -ENOMEM;
+                }
+        }
+        return 0;
+}
+
 /* The main purpose of this function is to synchronize
  * OProfile with SPUFS by registering to be notified of
  * SPU task switches.
@@ -372,20 +515,35 @@ static int number_of_online_nodes(void)
  */
 int spu_sync_start(void)
 {
-        int k;
+        int spu;
         int ret = SKIP_GENERIC_SYNC;
         int register_ret;
         unsigned long flags = 0;
 
         spu_prof_num_nodes = number_of_online_nodes();
         num_spu_nodes = spu_prof_num_nodes * 8;
+        INIT_DELAYED_WORK(&spu_work, wq_sync_spu_buff);
+
+        /* create buffer for storing the SPU data to put in
+         * the kernel buffer.
+         */
+        ret = oprofile_spu_buff_create();
+        if (ret)
+                goto out;
 
         spin_lock_irqsave(&buffer_lock, flags);
-        add_event_entry(ESCAPE_CODE);
-        add_event_entry(SPU_PROFILING_CODE);
-        add_event_entry(num_spu_nodes);
+        for (spu = 0; spu < num_spu_nodes; spu++) {
+                spu_buff_add(ESCAPE_CODE, spu);
+                spu_buff_add(SPU_PROFILING_CODE, spu);
+                spu_buff_add(num_spu_nodes, spu);
+        }
         spin_unlock_irqrestore(&buffer_lock, flags);
 
+        for (spu = 0; spu < num_spu_nodes; spu++) {
+                spu_buff[spu].ctx_sw_seen = 0;
+                spu_buff[spu].last_guard_val = 0;
+        }
+
         /* Register for SPU events  */
         register_ret = spu_switch_event_register(&spu_active);
         if (register_ret) {
@@ -393,8 +551,6 @@ int spu_sync_start(void)
                 goto out;
         }
 
-        for (k = 0; k < (MAX_NUMNODES * 8); k++)
-                last_guard_val[k] = 0;
         pr_debug("spu_sync_start -- running.\n");
 out:
         return ret;
@@ -446,13 +602,20 @@ void spu_sync_buffer(int spu_num, unsigned int *samples,
                  * use.  We need to discard samples taken during the time
                  * period which an overlay occurs (i.e., guard value changes).
                  */
-                if (grd_val && grd_val != last_guard_val[spu_num]) {
-                        last_guard_val[spu_num] = grd_val;
+                if (grd_val && grd_val != spu_buff[spu_num].last_guard_val) {
+                        spu_buff[spu_num].last_guard_val = grd_val;
                         /* Drop the rest of the samples. */
                         break;
                 }
 
-                add_event_entry(file_offset | spu_num_shifted);
+                /* We must ensure that the SPU context switch has been written
+                 * out before samples for the SPU.  Otherwise, the SPU context
+                 * information is not available and the postprocessing of the
+                 * SPU PC will fail with no available anonymous map information.
+                 */
+                if (spu_buff[spu_num].ctx_sw_seen)
+                        spu_buff_add((file_offset | spu_num_shifted),
+                                         spu_num);
         }
         spin_unlock(&buffer_lock);
 out:
@@ -463,20 +626,41 @@ out:
 int spu_sync_stop(void)
 {
         unsigned long flags = 0;
-        int ret = spu_switch_event_unregister(&spu_active);
-        if (ret) {
+        int ret;
+        int k;
+
+        ret = spu_switch_event_unregister(&spu_active);
+
+        if (ret)
                 printk(KERN_ERR "SPU_PROF: "
-                        "%s, line %d: spu_switch_event_unregister returned %d\n",
-                        __func__, __LINE__, ret);
-                goto out;
-        }
+                       "%s, line %d: spu_switch_event_unregister "      \
+                       "returned %d\n",
+                       __func__, __LINE__, ret);
+
+        /* flush any remaining data in the per SPU buffers */
+        sync_spu_buff();
 
         spin_lock_irqsave(&cache_lock, flags);
         ret = release_cached_info(RELEASE_ALL);
         spin_unlock_irqrestore(&cache_lock, flags);
-out:
+
+        /* remove scheduled work queue item rather then waiting
+         * for every queued entry to execute.  Then flush pending
+         * system wide buffer to event buffer.
+         */
+        cancel_delayed_work(&spu_work);
+
+        for (k = 0; k < num_spu_nodes; k++) {
+                spu_buff[k].ctx_sw_seen = 0;
+
+                /*
+                 * spu_sys_buff will be null if there was a problem
+                 * allocating the buffer.  Only delete if it exists.
+                 */
+                kfree(spu_buff[k].buff);
+                spu_buff[k].buff = 0;
+        }
         pr_debug("spu_sync_stop -- done.\n");
         return ret;
 }
 
-
diff --git a/arch/powerpc/platforms/40x/Kconfig b/arch/powerpc/platforms/40x/Kconfig
index a9260e21451e..65730275e012 100644
--- a/arch/powerpc/platforms/40x/Kconfig
+++ b/arch/powerpc/platforms/40x/Kconfig
@@ -14,6 +14,15 @@
 #       help
 #         This option enables support for the CPCI405 board.
 
+config ACADIA
+        bool "Acadia"
+        depends on 40x
+        default n
+        select PPC40x_SIMPLE
+        select 405EZ
+        help
+          This option enables support for the AMCC 405EZ Acadia evaluation board.
+
 config EP405
         bool "EP405/EP405PC"
         depends on 40x
@@ -23,6 +32,14 @@ config EP405
         help
           This option enables support for the EP405/EP405PC boards.
 
+config HCU4
+        bool "Hcu4"
+        depends on 40x
+        default y
+        select 405GPR
+        help
+          This option enables support for the Nestal Maschinen HCU4 board.
+
 config KILAUEA
         bool "Kilauea"
         depends on 40x
@@ -93,6 +110,13 @@ config XILINX_VIRTEX_GENERIC_BOARD
           Most Virtex designs should use this unless it needs to do some
           special configuration at board probe time.
 
+config PPC40x_SIMPLE
+        bool "Simple PowerPC 40x board support"
+        depends on 40x
+        default n
+        help
+          This option enables the simple PowerPC 40x platform support.
+
 # 40x specific CPU modules, selected based on the board above.
 config NP405H
         bool
@@ -118,6 +142,12 @@ config 405EX
         select IBM_NEW_EMAC_EMAC4
         select IBM_NEW_EMAC_RGMII
 
+config 405EZ
+        bool
+        select IBM_NEW_EMAC_NO_FLOW_CTRL
+        select IBM_NEW_EMAC_MAL_CLR_ICINTSTAT
+        select IBM_NEW_EMAC_MAL_COMMON_ERR
+
 config 405GPR
         bool
 
@@ -139,6 +169,14 @@ config STB03xxx
         select IBM405_ERR77
         select IBM405_ERR51
 
+config PPC4xx_GPIO
+        bool "PPC4xx GPIO support"
+        depends on 40x
+        select ARCH_REQUIRE_GPIOLIB
+        select GENERIC_GPIO
+        help
+          Enable gpiolib support for ppc40x based boards
+
 # 40x errata/workaround config symbols, selected by the CPU models above
 
 # All 405-based cores up until the 405GPR and 405EP have this errata.
diff --git a/arch/powerpc/platforms/40x/Makefile b/arch/powerpc/platforms/40x/Makefile
index 5533a5c8ce4e..9bab76a652a6 100644
--- a/arch/powerpc/platforms/40x/Makefile
+++ b/arch/powerpc/platforms/40x/Makefile
@@ -1,5 +1,7 @@
 obj-$(CONFIG_KILAUEA)                           += kilauea.o
+obj-$(CONFIG_HCU4)                              += hcu4.o
 obj-$(CONFIG_MAKALU)                            += makalu.o
 obj-$(CONFIG_WALNUT)                            += walnut.o
 obj-$(CONFIG_XILINX_VIRTEX_GENERIC_BOARD)       += virtex.o
 obj-$(CONFIG_EP405)                             += ep405.o
+obj-$(CONFIG_PPC40x_SIMPLE)             += ppc40x_simple.o
diff --git a/arch/powerpc/platforms/40x/hcu4.c b/arch/powerpc/platforms/40x/hcu4.c
new file mode 100644
index 000000000000..60b2afecab75
--- /dev/null
+++ b/arch/powerpc/platforms/40x/hcu4.c
@@ -0,0 +1,61 @@
+/*
+ * Architecture- / platform-specific boot-time initialization code for
+ * IBM PowerPC 4xx based boards. Adapted from original
+ * code by Gary Thomas, Cort Dougan <cort@fsmlabs.com>, and Dan Malek
+ * <dan@net4x.com>.
+ *
+ * Copyright(c) 1999-2000 Grant Erickson <grant@lcse.umn.edu>
+ *
+ * Rewritten and ported to the merged powerpc tree:
+ * Copyright 2007 IBM Corporation
+ * Josh Boyer <jwboyer@linux.vnet.ibm.com>
+ *
+ * 2002 (c) MontaVista, Software, Inc.  This file is licensed under
+ * the terms of the GNU General Public License version 2.  This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+
+#include <linux/init.h>
+#include <linux/of_platform.h>
+
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <asm/time.h>
+#include <asm/uic.h>
+#include <asm/ppc4xx.h>
+
+static __initdata struct of_device_id hcu4_of_bus[] = {
+        { .compatible = "ibm,plb3", },
+        { .compatible = "ibm,opb", },
+        { .compatible = "ibm,ebc", },
+        {},
+};
+
+static int __init hcu4_device_probe(void)
+{
+        of_platform_bus_probe(NULL, hcu4_of_bus, NULL);
+        return 0;
+}
+machine_device_initcall(hcu4, hcu4_device_probe);
+
+static int __init hcu4_probe(void)
+{
+        unsigned long root = of_get_flat_dt_root();
+
+        if (!of_flat_dt_is_compatible(root, "netstal,hcu4"))
+                return 0;
+
+        return 1;
+}
+
+define_machine(hcu4) {
+        .name                   = "HCU4",
+        .probe                  = hcu4_probe,
+        .progress               = udbg_progress,
+        .init_IRQ               = uic_init_tree,
+        .get_irq                = uic_get_irq,
+        .restart                = ppc4xx_reset_system,
+        .calibrate_decr         = generic_calibrate_decr,
+};
diff --git a/arch/powerpc/platforms/40x/ppc40x_simple.c b/arch/powerpc/platforms/40x/ppc40x_simple.c
new file mode 100644
index 000000000000..4498a86b46c3
--- /dev/null
+++ b/arch/powerpc/platforms/40x/ppc40x_simple.c
@@ -0,0 +1,80 @@
+/*
+ * Generic PowerPC 40x platform support
+ *
+ * Copyright 2008 IBM Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; version 2 of the License.
+ *
+ * This implements simple platform support for PowerPC 44x chips.  This is
+ * mostly used for eval boards or other simple and "generic" 44x boards.  If
+ * your board has custom functions or hardware, then you will likely want to
+ * implement your own board.c file to accommodate it.
+ */
+
+#include <asm/machdep.h>
+#include <asm/pci-bridge.h>
+#include <asm/ppc4xx.h>
+#include <asm/prom.h>
+#include <asm/time.h>
+#include <asm/udbg.h>
+#include <asm/uic.h>
+
+#include <linux/init.h>
+#include <linux/of_platform.h>
+
+static __initdata struct of_device_id ppc40x_of_bus[] = {
+        { .compatible = "ibm,plb3", },
+        { .compatible = "ibm,plb4", },
+        { .compatible = "ibm,opb", },
+        { .compatible = "ibm,ebc", },
+        { .compatible = "simple-bus", },
+        {},
+};
+
+static int __init ppc40x_device_probe(void)
+{
+        of_platform_bus_probe(NULL, ppc40x_of_bus, NULL);
+
+        return 0;
+}
+machine_device_initcall(ppc40x_simple, ppc40x_device_probe);
+
+/* This is the list of boards that can be supported by this simple
+ * platform code.  This does _not_ mean the boards are compatible,
+ * as they most certainly are not from a device tree perspective.
+ * However, their differences are handled by the device tree and the
+ * drivers and therefore they don't need custom board support files.
+ *
+ * Again, if your board needs to do things differently then create a
+ * board.c file for it rather than adding it to this list.
+ */
+static char *board[] __initdata = {
+        "amcc,acadia"
+};
+
+static int __init ppc40x_probe(void)
+{
+        unsigned long root = of_get_flat_dt_root();
+        int i = 0;
+
+        for (i = 0; i < ARRAY_SIZE(board); i++) {
+                if (of_flat_dt_is_compatible(root, board[i])) {
+                        ppc_pci_flags = PPC_PCI_REASSIGN_ALL_RSRC;
+                        return 1;
+                }
+        }
+
+        return 0;
+}
+
+define_machine(ppc40x_simple) {
+        .name = "PowerPC 40x Platform",
+        .probe = ppc40x_probe,
+        .progress = udbg_progress,
+        .init_IRQ = uic_init_tree,
+        .get_irq = uic_get_irq,
+        .restart = ppc4xx_reset_system,
+        .calibrate_decr = generic_calibrate_decr,
+};
diff --git a/arch/powerpc/platforms/44x/Kconfig b/arch/powerpc/platforms/44x/Kconfig
index 79c1154f88d4..3496bc05058e 100644
--- a/arch/powerpc/platforms/44x/Kconfig
+++ b/arch/powerpc/platforms/44x/Kconfig
@@ -167,6 +167,14 @@ config PPC44x_SIMPLE
         help
           This option enables the simple PowerPC 44x platform support.
 
+config PPC4xx_GPIO
+        bool "PPC4xx GPIO support"
+        depends on 44x
+        select ARCH_REQUIRE_GPIOLIB
+        select GENERIC_GPIO
+        help
+          Enable gpiolib support for ppc440 based boards
+
 # 44x specific CPU modules, selected based on the board above.
 config 440EP
         bool
diff --git a/arch/powerpc/platforms/52xx/mpc52xx_common.c b/arch/powerpc/platforms/52xx/mpc52xx_common.c
index 044b4e6e8743..ae7c34f37e1c 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_common.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_common.c
@@ -99,11 +99,14 @@ mpc5200_setup_xlb_arbiter(void)
         out_be32(&xlb->master_pri_enable, 0xff);
         out_be32(&xlb->master_priority, 0x11111111);
 
-        /* Disable XLB pipelining
+        /*
+         * Disable XLB pipelining
          * (cfr errate 292. We could do this only just before ATA PIO
          *  transaction and re-enable it afterwards ...)
+         * Not needed on MPC5200B.
          */
-        out_be32(&xlb->config, in_be32(&xlb->config) | MPC52xx_XLB_CFG_PLDIS);
+        if ((mfspr(SPRN_SVR) & MPC5200_SVR_MASK) == MPC5200_SVR)
+                out_be32(&xlb->config, in_be32(&xlb->config) | MPC52xx_XLB_CFG_PLDIS);
 
         iounmap(xlb);
 }
diff --git a/arch/powerpc/platforms/85xx/ksi8560.c b/arch/powerpc/platforms/85xx/ksi8560.c
index 8a3b117b6ce2..81cee7bbf2d2 100644
--- a/arch/powerpc/platforms/85xx/ksi8560.c
+++ b/arch/powerpc/platforms/85xx/ksi8560.c
@@ -193,7 +193,6 @@ static void __init ksi8560_setup_arch(void)
 static void ksi8560_show_cpuinfo(struct seq_file *m)
 {
         uint pvid, svid, phid1;
-        uint memsize = total_memory;
 
         pvid = mfspr(SPRN_PVR);
         svid = mfspr(SPRN_SVR);
@@ -215,9 +214,6 @@ static void ksi8560_show_cpuinfo(struct seq_file *m)
         /* Display cpu Pll setting */
         phid1 = mfspr(SPRN_HID1);
         seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
-
-        /* Display the amount of memory */
-        seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
 }
 
 static struct of_device_id __initdata of_bus_ids[] = {
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_ads.c b/arch/powerpc/platforms/85xx/mpc85xx_ads.c
index 0293e3d3580f..21f009023e26 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx_ads.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_ads.c
@@ -207,7 +207,6 @@ static void __init mpc85xx_ads_setup_arch(void)
 static void mpc85xx_ads_show_cpuinfo(struct seq_file *m)
 {
         uint pvid, svid, phid1;
-        uint memsize = total_memory;
 
         pvid = mfspr(SPRN_PVR);
         svid = mfspr(SPRN_SVR);
@@ -219,9 +218,6 @@ static void mpc85xx_ads_show_cpuinfo(struct seq_file *m)
         /* Display cpu Pll setting */
         phid1 = mfspr(SPRN_HID1);
         seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
-
-        /* Display the amount of memory */
-        seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
 }
 
 static struct of_device_id __initdata of_bus_ids[] = {
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_cds.c b/arch/powerpc/platforms/85xx/mpc85xx_cds.c
index 50d7ea8f922b..aeb6a5bc5522 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx_cds.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_cds.c
@@ -307,7 +307,6 @@ static void __init mpc85xx_cds_setup_arch(void)
 static void mpc85xx_cds_show_cpuinfo(struct seq_file *m)
 {
         uint pvid, svid, phid1;
-        uint memsize = total_memory;
 
         pvid = mfspr(SPRN_PVR);
         svid = mfspr(SPRN_SVR);
@@ -320,9 +319,6 @@ static void mpc85xx_cds_show_cpuinfo(struct seq_file *m)
         /* Display cpu Pll setting */
         phid1 = mfspr(SPRN_HID1);
         seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
-
-        /* Display the amount of memory */
-        seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
 }
 
 
diff --git a/arch/powerpc/platforms/85xx/sbc8548.c b/arch/powerpc/platforms/85xx/sbc8548.c
index b9246ea0928a..7ec77ce12dad 100644
--- a/arch/powerpc/platforms/85xx/sbc8548.c
+++ b/arch/powerpc/platforms/85xx/sbc8548.c
@@ -136,7 +136,6 @@ static void __init sbc8548_setup_arch(void)
 static void sbc8548_show_cpuinfo(struct seq_file *m)
 {
         uint pvid, svid, phid1;
-        uint memsize = total_memory;
 
         pvid = mfspr(SPRN_PVR);
         svid = mfspr(SPRN_SVR);
@@ -149,9 +148,6 @@ static void sbc8548_show_cpuinfo(struct seq_file *m)
         /* Display cpu Pll setting */
         phid1 = mfspr(SPRN_HID1);
         seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
-
-        /* Display the amount of memory */
-        seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
 }
 
 static struct of_device_id __initdata of_bus_ids[] = {
diff --git a/arch/powerpc/platforms/85xx/sbc8560.c b/arch/powerpc/platforms/85xx/sbc8560.c
index 0c9a856f66b6..472f254a19d2 100644
--- a/arch/powerpc/platforms/85xx/sbc8560.c
+++ b/arch/powerpc/platforms/85xx/sbc8560.c
@@ -194,7 +194,6 @@ static void __init sbc8560_setup_arch(void)
 static void sbc8560_show_cpuinfo(struct seq_file *m)
 {
         uint pvid, svid, phid1;
-        uint memsize = total_memory;
 
         pvid = mfspr(SPRN_PVR);
         svid = mfspr(SPRN_SVR);
@@ -206,9 +205,6 @@ static void sbc8560_show_cpuinfo(struct seq_file *m)
         /* Display cpu Pll setting */
         phid1 = mfspr(SPRN_HID1);
         seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
-
-        /* Display the amount of memory */
-        seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
 }
 
 static struct of_device_id __initdata of_bus_ids[] = {
diff --git a/arch/powerpc/platforms/85xx/stx_gp3.c b/arch/powerpc/platforms/85xx/stx_gp3.c
index 18499d7c9d9e..0cca8f5cb272 100644
--- a/arch/powerpc/platforms/85xx/stx_gp3.c
+++ b/arch/powerpc/platforms/85xx/stx_gp3.c
@@ -130,7 +130,6 @@ static void __init stx_gp3_setup_arch(void)
 static void stx_gp3_show_cpuinfo(struct seq_file *m)
 {
         uint pvid, svid, phid1;
-        uint memsize = total_memory;
 
         pvid = mfspr(SPRN_PVR);
         svid = mfspr(SPRN_SVR);
@@ -142,9 +141,6 @@ static void stx_gp3_show_cpuinfo(struct seq_file *m)
         /* Display cpu Pll setting */
         phid1 = mfspr(SPRN_HID1);
         seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
-
-        /* Display the amount of memory */
-        seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
 }
 
 static struct of_device_id __initdata of_bus_ids[] = {
diff --git a/arch/powerpc/platforms/85xx/tqm85xx.c b/arch/powerpc/platforms/85xx/tqm85xx.c
index d850880d6964..2933a8e827d9 100644
--- a/arch/powerpc/platforms/85xx/tqm85xx.c
+++ b/arch/powerpc/platforms/85xx/tqm85xx.c
@@ -138,7 +138,6 @@ static void __init tqm85xx_setup_arch(void)
 static void tqm85xx_show_cpuinfo(struct seq_file *m)
 {
         uint pvid, svid, phid1;
-        uint memsize = total_memory;
 
         pvid = mfspr(SPRN_PVR);
         svid = mfspr(SPRN_SVR);
@@ -150,9 +149,6 @@ static void tqm85xx_show_cpuinfo(struct seq_file *m)
         /* Display cpu Pll setting */
         phid1 = mfspr(SPRN_HID1);
         seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
-
-        /* Display the amount of memory */
-        seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
 }
 
 static struct of_device_id __initdata of_bus_ids[] = {
diff --git a/arch/powerpc/platforms/86xx/gef_sbc610.c b/arch/powerpc/platforms/86xx/gef_sbc610.c
index 821c45fac18b..fb371f5ce132 100644
--- a/arch/powerpc/platforms/86xx/gef_sbc610.c
+++ b/arch/powerpc/platforms/86xx/gef_sbc610.c
@@ -127,7 +127,6 @@ static unsigned int gef_sbc610_get_fpga_rev(void)
 
 static void gef_sbc610_show_cpuinfo(struct seq_file *m)
 {
-        uint memsize = total_memory;
         uint svid = mfspr(SPRN_SVR);
 
         seq_printf(m, "Vendor\t\t: GE Fanuc Intelligent Platforms\n");
@@ -137,7 +136,6 @@ static void gef_sbc610_show_cpuinfo(struct seq_file *m)
         seq_printf(m, "FPGA Revision\t: %u\n", gef_sbc610_get_fpga_rev());
 
         seq_printf(m, "SVR\t\t: 0x%x\n", svid);
-        seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
 }
 
 static void __init gef_sbc610_nec_fixup(struct pci_dev *pdev)
diff --git a/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c b/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
index 2672829a71dc..27e0e682d8e1 100644
--- a/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
+++ b/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
@@ -101,13 +101,11 @@ mpc86xx_hpcn_setup_arch(void)
 static void
 mpc86xx_hpcn_show_cpuinfo(struct seq_file *m)
 {
-        uint memsize = total_memory;
         uint svid = mfspr(SPRN_SVR);
 
         seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n");
 
         seq_printf(m, "SVR\t\t: 0x%x\n", svid);
-        seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
 }
 
 
diff --git a/arch/powerpc/platforms/86xx/sbc8641d.c b/arch/powerpc/platforms/86xx/sbc8641d.c
index da677a74e2d1..5fd7ed40986f 100644
--- a/arch/powerpc/platforms/86xx/sbc8641d.c
+++ b/arch/powerpc/platforms/86xx/sbc8641d.c
@@ -63,13 +63,11 @@ sbc8641_setup_arch(void)
 static void
 sbc8641_show_cpuinfo(struct seq_file *m)
 {
-        uint memsize = total_memory;
         uint svid = mfspr(SPRN_SVR);
 
         seq_printf(m, "Vendor\t\t: Wind River Systems\n");
 
         seq_printf(m, "SVR\t\t: 0x%x\n", svid);
-        seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
 }
 
 
diff --git a/arch/powerpc/platforms/cell/ras.c b/arch/powerpc/platforms/cell/ras.c
index 2a14b052abcd..665af1c4195b 100644
--- a/arch/powerpc/platforms/cell/ras.c
+++ b/arch/powerpc/platforms/cell/ras.c
@@ -21,6 +21,7 @@
 #include <asm/machdep.h>
 #include <asm/rtas.h>
 #include <asm/cell-regs.h>
+#include <asm/kdump.h>
 
 #include "ras.h"
 
@@ -111,9 +112,8 @@ static int __init cbe_ptcal_enable_on_node(int nid, int order)
         int ret = -ENOMEM;
         unsigned long addr;
 
-#ifdef CONFIG_CRASH_DUMP
-        rtas_call(ptcal_stop_tok, 1, 1, NULL, nid);
-#endif
+        if (__kdump_flag)
+                rtas_call(ptcal_stop_tok, 1, 1, NULL, nid);
 
         area = kmalloc(sizeof(*area), GFP_KERNEL);
         if (!area)
diff --git a/arch/powerpc/platforms/cell/smp.c b/arch/powerpc/platforms/cell/smp.c
index efb3964457b1..c0d86e1f56ea 100644
--- a/arch/powerpc/platforms/cell/smp.c
+++ b/arch/powerpc/platforms/cell/smp.c
@@ -54,8 +54,8 @@
 #endif
 
 /*
- * The primary thread of each non-boot processor is recorded here before
- * smp init.
+ * The Primary thread of each non-boot processor was started from the OF client
+ * interface by prom_hold_cpus and is spinning on secondary_hold_spinloop.
  */
 static cpumask_t of_spin_map;
 
@@ -208,11 +208,7 @@ void __init smp_init_cell(void)
         /* Mark threads which are still spinning in hold loops. */
         if (cpu_has_feature(CPU_FTR_SMT)) {
                 for_each_present_cpu(i) {
-                        if (i % 2 == 0)
-                                /*
-                                 * Even-numbered logical cpus correspond to
-                                 * primary threads.
-                                 */
+                        if (cpu_thread_in_core(i) == 0)
                                 cpu_set(i, of_spin_map);
                 }
         } else {
diff --git a/arch/powerpc/platforms/cell/spufs/file.c b/arch/powerpc/platforms/cell/spufs/file.c
index 010a51f59796..b73c369cc6f1 100644
--- a/arch/powerpc/platforms/cell/spufs/file.c
+++ b/arch/powerpc/platforms/cell/spufs/file.c
@@ -548,6 +548,11 @@ spufs_regs_read(struct file *file, char __user *buffer,
         int ret;
         struct spu_context *ctx = file->private_data;
 
+        /* pre-check for file position: if we'd return EOF, there's no point
+         * causing a deschedule */
+        if (*pos >= sizeof(ctx->csa.lscsa->gprs))
+                return 0;
+
         ret = spu_acquire_saved(ctx);
         if (ret)
                 return ret;
@@ -2426,38 +2431,49 @@ static inline int spufs_switch_log_avail(struct spu_context *ctx)
 static int spufs_switch_log_open(struct inode *inode, struct file *file)
 {
         struct spu_context *ctx = SPUFS_I(inode)->i_ctx;
+        int rc;
+
+        rc = spu_acquire(ctx);
+        if (rc)
+                return rc;
 
-        /*
-         * We (ab-)use the mapping_lock here because it serves the similar
-         * purpose for synchronizing open/close elsewhere.  Maybe it should
-         * be renamed eventually.
-         */
-        mutex_lock(&ctx->mapping_lock);
         if (ctx->switch_log) {
-                spin_lock(&ctx->switch_log->lock);
-                ctx->switch_log->head = 0;
-                ctx->switch_log->tail = 0;
-                spin_unlock(&ctx->switch_log->lock);
-        } else {
-                /*
-                 * We allocate the switch log data structures on first open.
-                 * They will never be free because we assume a context will
-                 * be traced until it goes away.
-                 */
-                ctx->switch_log = kzalloc(sizeof(struct switch_log) +
-                        SWITCH_LOG_BUFSIZE * sizeof(struct switch_log_entry),
-                        GFP_KERNEL);
-                if (!ctx->switch_log)
-                        goto out;
-                spin_lock_init(&ctx->switch_log->lock);
-                init_waitqueue_head(&ctx->switch_log->wait);
+                rc = -EBUSY;
+                goto out;
         }
-        mutex_unlock(&ctx->mapping_lock);
+
+        ctx->switch_log = kmalloc(sizeof(struct switch_log) +
+                SWITCH_LOG_BUFSIZE * sizeof(struct switch_log_entry),
+                GFP_KERNEL);
+
+        if (!ctx->switch_log) {
+                rc = -ENOMEM;
+                goto out;
+        }
+
+        ctx->switch_log->head = ctx->switch_log->tail = 0;
+        init_waitqueue_head(&ctx->switch_log->wait);
+        rc = 0;
+
+out:
+        spu_release(ctx);
+        return rc;
+}
+
+static int spufs_switch_log_release(struct inode *inode, struct file *file)
+{
+        struct spu_context *ctx = SPUFS_I(inode)->i_ctx;
+        int rc;
+
+        rc = spu_acquire(ctx);
+        if (rc)
+                return rc;
+
+        kfree(ctx->switch_log);
+        ctx->switch_log = NULL;
+        spu_release(ctx);
 
         return 0;
- out:
-        mutex_unlock(&ctx->mapping_lock);
-        return -ENOMEM;
 }
 
 static int switch_log_sprint(struct spu_context *ctx, char *tbuf, int n)
@@ -2485,42 +2501,54 @@ static ssize_t spufs_switch_log_read(struct file *file, char __user *buf,
         if (!buf || len < 0)
                 return -EINVAL;
 
+        error = spu_acquire(ctx);
+        if (error)
+                return error;
+
         while (cnt < len) {
                 char tbuf[128];
                 int width;
 
-                if (file->f_flags & O_NONBLOCK) {
-                        if (spufs_switch_log_used(ctx) <= 0)
-                                return cnt ? cnt : -EAGAIN;
-                } else {
-                        /* Wait for data in buffer */
-                        error = wait_event_interruptible(ctx->switch_log->wait,
-                                        spufs_switch_log_used(ctx) > 0);
-                        if (error)
+                if (spufs_switch_log_used(ctx) == 0) {
+                        if (cnt > 0) {
+                                /* If there's data ready to go, we can
+                                 * just return straight away */
+                                break;
+
+                        } else if (file->f_flags & O_NONBLOCK) {
+                                error = -EAGAIN;
                                 break;
-                }
 
-                spin_lock(&ctx->switch_log->lock);
-                if (ctx->switch_log->head == ctx->switch_log->tail) {
-                        /* multiple readers race? */
-                        spin_unlock(&ctx->switch_log->lock);
-                        continue;
+                        } else {
+                                /* spufs_wait will drop the mutex and
+                                 * re-acquire, but since we're in read(), the
+                                 * file cannot be _released (and so
+                                 * ctx->switch_log is stable).
+                                 */
+                                error = spufs_wait(ctx->switch_log->wait,
+                                                spufs_switch_log_used(ctx) > 0);
+
+                                /* On error, spufs_wait returns without the
+                                 * state mutex held */
+                                if (error)
+                                        return error;
+
+                                /* We may have had entries read from underneath
+                                 * us while we dropped the mutex in spufs_wait,
+                                 * so re-check */
+                                if (spufs_switch_log_used(ctx) == 0)
+                                        continue;
+                        }
                 }
 
                 width = switch_log_sprint(ctx, tbuf, sizeof(tbuf));
-                if (width < len) {
+                if (width < len)
                         ctx->switch_log->tail =
                                 (ctx->switch_log->tail + 1) %
                                  SWITCH_LOG_BUFSIZE;
-                }
-
-                spin_unlock(&ctx->switch_log->lock);
-
-                /*
-                 * If the record is greater than space available return
-                 * partial buffer (so far)
-                 */
-                if (width >= len)
+                else
+                        /* If the record is greater than space available return
+                         * partial buffer (so far) */
                         break;
 
                 error = copy_to_user(buf + cnt, tbuf, width);
@@ -2529,6 +2557,8 @@ static ssize_t spufs_switch_log_read(struct file *file, char __user *buf,
                 cnt += width;
         }
 
+        spu_release(ctx);
+
         return cnt == 0 ? error : cnt;
 }
 
@@ -2537,29 +2567,41 @@ static unsigned int spufs_switch_log_poll(struct file *file, poll_table *wait)
         struct inode *inode = file->f_path.dentry->d_inode;
         struct spu_context *ctx = SPUFS_I(inode)->i_ctx;
         unsigned int mask = 0;
+        int rc;
 
         poll_wait(file, &ctx->switch_log->wait, wait);
 
+        rc = spu_acquire(ctx);
+        if (rc)
+                return rc;
+
         if (spufs_switch_log_used(ctx) > 0)
                 mask |= POLLIN;
 
+        spu_release(ctx);
+
         return mask;
 }
 
 static const struct file_operations spufs_switch_log_fops = {
-        .owner  = THIS_MODULE,
-        .open   = spufs_switch_log_open,
-        .read   = spufs_switch_log_read,
-        .poll   = spufs_switch_log_poll,
+        .owner          = THIS_MODULE,
+        .open           = spufs_switch_log_open,
+        .read           = spufs_switch_log_read,
+        .poll           = spufs_switch_log_poll,
+        .release        = spufs_switch_log_release,
 };
 
+/**
+ * Log a context switch event to a switch log reader.
+ *
+ * Must be called with ctx->state_mutex held.
+ */
 void spu_switch_log_notify(struct spu *spu, struct spu_context *ctx,
                 u32 type, u32 val)
 {
         if (!ctx->switch_log)
                 return;
 
-        spin_lock(&ctx->switch_log->lock);
         if (spufs_switch_log_avail(ctx) > 1) {
                 struct switch_log_entry *p;
 
@@ -2573,7 +2615,6 @@ void spu_switch_log_notify(struct spu *spu, struct spu_context *ctx,
                 ctx->switch_log->head =
                         (ctx->switch_log->head + 1) % SWITCH_LOG_BUFSIZE;
         }
-        spin_unlock(&ctx->switch_log->lock);
 
         wake_up(&ctx->switch_log->wait);
 }
diff --git a/arch/powerpc/platforms/cell/spufs/run.c b/arch/powerpc/platforms/cell/spufs/run.c
index c9bb7cfd3dca..c58bd36b0c5b 100644
--- a/arch/powerpc/platforms/cell/spufs/run.c
+++ b/arch/powerpc/platforms/cell/spufs/run.c
@@ -249,6 +249,7 @@ static int spu_run_fini(struct spu_context *ctx, u32 *npc,
 
         spuctx_switch_state(ctx, SPU_UTIL_IDLE_LOADED);
         clear_bit(SPU_SCHED_SPU_RUN, &ctx->sched_flags);
+        spu_switch_log_notify(NULL, ctx, SWITCH_LOG_EXIT, *status);
         spu_release(ctx);
 
         if (signal_pending(current))
@@ -417,8 +418,6 @@ long spufs_run_spu(struct spu_context *ctx, u32 *npc, u32 *event)
         ret = spu_run_fini(ctx, npc, &status);
         spu_yield(ctx);
 
-        spu_switch_log_notify(NULL, ctx, SWITCH_LOG_EXIT, status);
-
         if ((status & SPU_STATUS_STOPPED_BY_STOP) &&
             (((status >> SPU_STOP_STATUS_SHIFT) & 0x3f00) == 0x2100))
                 ctx->stats.libassist++;
diff --git a/arch/powerpc/platforms/cell/spufs/sched.c b/arch/powerpc/platforms/cell/spufs/sched.c
index 67595bc380dc..2ad914c47493 100644
--- a/arch/powerpc/platforms/cell/spufs/sched.c
+++ b/arch/powerpc/platforms/cell/spufs/sched.c
@@ -312,6 +312,15 @@ static struct spu *aff_ref_location(struct spu_context *ctx, int mem_aff,
          */
         node = cpu_to_node(raw_smp_processor_id());
         for (n = 0; n < MAX_NUMNODES; n++, node++) {
+                /*
+                 * "available_spus" counts how many spus are not potentially
+                 * going to be used by other affinity gangs whose reference
+                 * context is already in place. Although this code seeks to
+                 * avoid having affinity gangs with a summed amount of
+                 * contexts bigger than the amount of spus in the node,
+                 * this may happen sporadically. In this case, available_spus
+                 * becomes negative, which is harmless.
+                 */
                 int available_spus;
 
                 node = (node < MAX_NUMNODES) ? node : 0;
@@ -321,12 +330,10 @@ static struct spu *aff_ref_location(struct spu_context *ctx, int mem_aff,
                 available_spus = 0;
                 mutex_lock(&cbe_spu_info[node].list_mutex);
                 list_for_each_entry(spu, &cbe_spu_info[node].spus, cbe_list) {
-                        if (spu->ctx && spu->ctx->gang
-                                        && spu->ctx->aff_offset == 0)
-                                available_spus -=
-                                        (spu->ctx->gang->contexts - 1);
-                        else
-                                available_spus++;
+                        if (spu->ctx && spu->ctx->gang && !spu->ctx->aff_offset
+                                        && spu->ctx->gang->aff_ref_spu)
+                                available_spus -= spu->ctx->gang->contexts;
+                        available_spus++;
                 }
                 if (available_spus < ctx->gang->contexts) {
                         mutex_unlock(&cbe_spu_info[node].list_mutex);
@@ -437,6 +444,11 @@ static void spu_unbind_context(struct spu *spu, struct spu_context *ctx)
                 atomic_dec(&cbe_spu_info[spu->node].reserved_spus);
 
         if (ctx->gang)
+                /*
+                 * If ctx->gang->aff_sched_count is positive, SPU affinity is
+                 * being considered in this gang. Using atomic_dec_if_positive
+                 * allow us to skip an explicit check for affinity in this gang
+                 */
                 atomic_dec_if_positive(&ctx->gang->aff_sched_count);
 
         spu_switch_notify(spu, NULL);
diff --git a/arch/powerpc/platforms/cell/spufs/spufs.h b/arch/powerpc/platforms/cell/spufs/spufs.h
index 8ae8ef9dfc22..15c62d3ca129 100644
--- a/arch/powerpc/platforms/cell/spufs/spufs.h
+++ b/arch/powerpc/platforms/cell/spufs/spufs.h
@@ -65,7 +65,6 @@ enum {
 };
 
 struct switch_log {
-        spinlock_t              lock;
         wait_queue_head_t       wait;
         unsigned long           head;
         unsigned long           tail;
diff --git a/arch/powerpc/platforms/cell/spufs/sputrace.c b/arch/powerpc/platforms/cell/spufs/sputrace.c
index 2ece399f2862..d0b1f3f4d9c8 100644
--- a/arch/powerpc/platforms/cell/spufs/sputrace.c
+++ b/arch/powerpc/platforms/cell/spufs/sputrace.c
@@ -40,6 +40,7 @@ static DECLARE_WAIT_QUEUE_HEAD(sputrace_wait);
 static ktime_t sputrace_start;
 static unsigned long sputrace_head, sputrace_tail;
 static struct sputrace *sputrace_log;
+static int sputrace_logging;
 
 static int sputrace_used(void)
 {
@@ -79,6 +80,11 @@ static ssize_t sputrace_read(struct file *file, char __user *buf,
                 char tbuf[128];
                 int width;
 
+                /* If we have data ready to return, don't block waiting
+                 * for more */
+                if (cnt > 0 && sputrace_used() == 0)
+                        break;
+
                 error = wait_event_interruptible(sputrace_wait,
                                                  sputrace_used() > 0);
                 if (error)
@@ -109,24 +115,49 @@ static ssize_t sputrace_read(struct file *file, char __user *buf,
 
 static int sputrace_open(struct inode *inode, struct file *file)
 {
+        int rc;
+
         spin_lock(&sputrace_lock);
+        if (sputrace_logging) {
+                rc = -EBUSY;
+                goto out;
+        }
+
+        sputrace_logging = 1;
         sputrace_head = sputrace_tail = 0;
         sputrace_start = ktime_get();
+        rc = 0;
+
+out:
         spin_unlock(&sputrace_lock);
+        return rc;
+}
 
+static int sputrace_release(struct inode *inode, struct file *file)
+{
+        spin_lock(&sputrace_lock);
+        sputrace_logging = 0;
+        spin_unlock(&sputrace_lock);
         return 0;
 }
 
 static const struct file_operations sputrace_fops = {
-        .owner  = THIS_MODULE,
-        .open   = sputrace_open,
-        .read   = sputrace_read,
+        .owner   = THIS_MODULE,
+        .open    = sputrace_open,
+        .read    = sputrace_read,
+        .release = sputrace_release,
 };
 
 static void sputrace_log_item(const char *name, struct spu_context *ctx,
                 struct spu *spu)
 {
         spin_lock(&sputrace_lock);
+
+        if (!sputrace_logging) {
+                spin_unlock(&sputrace_lock);
+                return;
+        }
+
         if (sputrace_avail() > 1) {
                 struct sputrace *t = sputrace_log + sputrace_head;
 
diff --git a/arch/powerpc/platforms/embedded6xx/c2k.c b/arch/powerpc/platforms/embedded6xx/c2k.c
index d0b25b8c39d1..32ba0fa0ad03 100644
--- a/arch/powerpc/platforms/embedded6xx/c2k.c
+++ b/arch/powerpc/platforms/embedded6xx/c2k.c
@@ -116,10 +116,7 @@ static void c2k_restart(char *cmd)
 
 void c2k_show_cpuinfo(struct seq_file *m)
 {
-        uint memsize = total_memory;
-
         seq_printf(m, "Vendor\t\t: GEFanuc\n");
-        seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
         seq_printf(m, "coherency\t: %s\n", COHERENCY_SETTING);
 }
 
diff --git a/arch/powerpc/platforms/embedded6xx/prpmc2800.c b/arch/powerpc/platforms/embedded6xx/prpmc2800.c
index 5a19b9a1457c..4c485e984236 100644
--- a/arch/powerpc/platforms/embedded6xx/prpmc2800.c
+++ b/arch/powerpc/platforms/embedded6xx/prpmc2800.c
@@ -119,10 +119,7 @@ static void prpmc2800_restart(char *cmd)
 
 void prpmc2800_show_cpuinfo(struct seq_file *m)
 {
-        uint memsize = total_memory;
-
         seq_printf(m, "Vendor\t\t: Motorola\n");
-        seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
         seq_printf(m, "coherency\t: %s\n", PPRPM2800_COHERENCY_SETTING);
 }
 
diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c
index 140d02a5232a..a623ad256e9e 100644
--- a/arch/powerpc/platforms/pseries/hotplug-memory.c
+++ b/arch/powerpc/platforms/pseries/hotplug-memory.c
@@ -22,6 +22,12 @@ static int pseries_remove_lmb(unsigned long base, unsigned int lmb_size)
         int ret;
 
         start_pfn = base >> PAGE_SHIFT;
+
+        if (!pfn_valid(start_pfn)) {
+                lmb_remove(base, lmb_size);
+                return 0;
+        }
+
         zone = page_zone(pfn_to_page(start_pfn));
 
         /*
diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c
index a8c446697f9e..d56491d182d3 100644
--- a/arch/powerpc/platforms/pseries/iommu.c
+++ b/arch/powerpc/platforms/pseries/iommu.c
@@ -44,6 +44,7 @@
 #include <asm/tce.h>
 #include <asm/ppc-pci.h>
 #include <asm/udbg.h>
+#include <asm/kdump.h>
 
 #include "plpar_wrappers.h"
 
@@ -291,9 +292,8 @@ static void iommu_table_setparms(struct pci_controller *phb,
 
         tbl->it_base = (unsigned long)__va(*basep);
 
-#ifndef CONFIG_CRASH_DUMP
-        memset((void *)tbl->it_base, 0, *sizep);
-#endif
+        if (!__kdump_flag)
+                memset((void *)tbl->it_base, 0, *sizep);
 
         tbl->it_busno = phb->bus->number;
 
diff --git a/arch/powerpc/platforms/pseries/smp.c b/arch/powerpc/platforms/pseries/smp.c
index e00f96baa381..1a231c389ba0 100644
--- a/arch/powerpc/platforms/pseries/smp.c
+++ b/arch/powerpc/platforms/pseries/smp.c
@@ -52,8 +52,8 @@
 
 
 /*
- * The primary thread of each non-boot processor is recorded here before
- * smp init.
+ * The Primary thread of each non-boot processor was started from the OF client
+ * interface by prom_hold_cpus and is spinning on secondary_hold_spinloop.
  */
 static cpumask_t of_spin_map;
 
@@ -161,8 +161,7 @@ static void __devinit smp_pSeries_kick_cpu(int nr)
 static int smp_pSeries_cpu_bootable(unsigned int nr)
 {
         /* Special case - we inhibit secondary thread startup
-         * during boot if the user requests it.  Odd-numbered
-         * cpus are assumed to be secondary threads.
+         * during boot if the user requests it.
          */
         if (system_state < SYSTEM_RUNNING &&
             cpu_has_feature(CPU_FTR_SMT) &&
@@ -199,11 +198,7 @@ static void __init smp_init_pseries(void)
         /* Mark threads which are still spinning in hold loops. */
         if (cpu_has_feature(CPU_FTR_SMT)) {
                 for_each_present_cpu(i) { 
-                        if (i % 2 == 0)
-                                /*
-                                 * Even-numbered logical cpus correspond to
-                                 * primary threads.
-                                 */
+                        if (cpu_thread_in_core(i) == 0)
                                 cpu_set(i, of_spin_map);
                 }
         } else {
diff --git a/arch/powerpc/sysdev/Makefile b/arch/powerpc/sysdev/Makefile
index a44709a94f97..5afce115ab1f 100644
--- a/arch/powerpc/sysdev/Makefile
+++ b/arch/powerpc/sysdev/Makefile
@@ -37,6 +37,7 @@ obj-$(CONFIG_OF_RTC)		+= of_rtc.o
 ifeq ($(CONFIG_PCI),y)
 obj-$(CONFIG_4xx)               += ppc4xx_pci.o
 endif
+obj-$(CONFIG_PPC4xx_GPIO)       += ppc4xx_gpio.o
 
 obj-$(CONFIG_CPM)               += cpm_common.o
 obj-$(CONFIG_CPM2)              += cpm2.o cpm2_pic.o
diff --git a/arch/powerpc/sysdev/ppc4xx_gpio.c b/arch/powerpc/sysdev/ppc4xx_gpio.c
new file mode 100644
index 000000000000..110efe2a54fc
--- /dev/null
+++ b/arch/powerpc/sysdev/ppc4xx_gpio.c
@@ -0,0 +1,217 @@
+/*
+ * PPC4xx gpio driver
+ *
+ * Copyright (c) 2008 Harris Corporation
+ * Copyright (c) 2008 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
+ * Copyright (c) MontaVista Software, Inc. 2008.
+ *
+ * Author: Steve Falco <sfalco@harris.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/gpio.h>
+#include <linux/types.h>
+
+#define GPIO_MASK(gpio)         (0x80000000 >> (gpio))
+#define GPIO_MASK2(gpio)        (0xc0000000 >> ((gpio) * 2))
+
+/* Physical GPIO register layout */
+struct ppc4xx_gpio {
+        __be32 or;
+        __be32 tcr;
+        __be32 osrl;
+        __be32 osrh;
+        __be32 tsrl;
+        __be32 tsrh;
+        __be32 odr;
+        __be32 ir;
+        __be32 rr1;
+        __be32 rr2;
+        __be32 rr3;
+        __be32 reserved1;
+        __be32 isr1l;
+        __be32 isr1h;
+        __be32 isr2l;
+        __be32 isr2h;
+        __be32 isr3l;
+        __be32 isr3h;
+};
+
+struct ppc4xx_gpio_chip {
+        struct of_mm_gpio_chip mm_gc;
+        spinlock_t lock;
+};
+
+/*
+ * GPIO LIB API implementation for GPIOs
+ *
+ * There are a maximum of 32 gpios in each gpio controller.
+ */
+
+static inline struct ppc4xx_gpio_chip *
+to_ppc4xx_gpiochip(struct of_mm_gpio_chip *mm_gc)
+{
+        return container_of(mm_gc, struct ppc4xx_gpio_chip, mm_gc);
+}
+
+static int ppc4xx_gpio_get(struct gpio_chip *gc, unsigned int gpio)
+{
+        struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+        struct ppc4xx_gpio __iomem *regs = mm_gc->regs;
+
+        return in_be32(&regs->ir) & GPIO_MASK(gpio);
+}
+
+static inline void
+__ppc4xx_gpio_set(struct gpio_chip *gc, unsigned int gpio, int val)
+{
+        struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+        struct ppc4xx_gpio __iomem *regs = mm_gc->regs;
+
+        if (val)
+                setbits32(&regs->or, GPIO_MASK(gpio));
+        else
+                clrbits32(&regs->or, GPIO_MASK(gpio));
+}
+
+static void
+ppc4xx_gpio_set(struct gpio_chip *gc, unsigned int gpio, int val)
+{
+        struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+        struct ppc4xx_gpio_chip *chip = to_ppc4xx_gpiochip(mm_gc);
+        unsigned long flags;
+
+        spin_lock_irqsave(&chip->lock, flags);
+
+        __ppc4xx_gpio_set(gc, gpio, val);
+
+        spin_unlock_irqrestore(&chip->lock, flags);
+
+        pr_debug("%s: gpio: %d val: %d\n", __func__, gpio, val);
+}
+
+static int ppc4xx_gpio_dir_in(struct gpio_chip *gc, unsigned int gpio)
+{
+        struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+        struct ppc4xx_gpio_chip *chip = to_ppc4xx_gpiochip(mm_gc);
+        struct ppc4xx_gpio __iomem *regs = mm_gc->regs;
+        unsigned long flags;
+
+        spin_lock_irqsave(&chip->lock, flags);
+
+        /* Disable open-drain function */
+        clrbits32(&regs->odr, GPIO_MASK(gpio));
+
+        /* Float the pin */
+        clrbits32(&regs->tcr, GPIO_MASK(gpio));
+
+        /* Bits 0-15 use TSRL/OSRL, bits 16-31 use TSRH/OSRH */
+        if (gpio < 16) {
+                clrbits32(&regs->osrl, GPIO_MASK2(gpio));
+                clrbits32(&regs->tsrl, GPIO_MASK2(gpio));
+        } else {
+                clrbits32(&regs->osrh, GPIO_MASK2(gpio));
+                clrbits32(&regs->tsrh, GPIO_MASK2(gpio));
+        }
+
+        spin_unlock_irqrestore(&chip->lock, flags);
+
+        return 0;
+}
+
+static int
+ppc4xx_gpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
+{
+        struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+        struct ppc4xx_gpio_chip *chip = to_ppc4xx_gpiochip(mm_gc);
+        struct ppc4xx_gpio __iomem *regs = mm_gc->regs;
+        unsigned long flags;
+
+        spin_lock_irqsave(&chip->lock, flags);
+
+        /* First set initial value */
+        __ppc4xx_gpio_set(gc, gpio, val);
+
+        /* Disable open-drain function */
+        clrbits32(&regs->odr, GPIO_MASK(gpio));
+
+        /* Drive the pin */
+        setbits32(&regs->tcr, GPIO_MASK(gpio));
+
+        /* Bits 0-15 use TSRL, bits 16-31 use TSRH */
+        if (gpio < 16) {
+                clrbits32(&regs->osrl, GPIO_MASK2(gpio));
+                clrbits32(&regs->tsrl, GPIO_MASK2(gpio));
+        } else {
+                clrbits32(&regs->osrh, GPIO_MASK2(gpio));
+                clrbits32(&regs->tsrh, GPIO_MASK2(gpio));
+        }
+
+        spin_unlock_irqrestore(&chip->lock, flags);
+
+        pr_debug("%s: gpio: %d val: %d\n", __func__, gpio, val);
+
+        return 0;
+}
+
+static int __init ppc4xx_add_gpiochips(void)
+{
+        struct device_node *np;
+
+        for_each_compatible_node(np, NULL, "ibm,ppc4xx-gpio") {
+                int ret;
+                struct ppc4xx_gpio_chip *ppc4xx_gc;
+                struct of_mm_gpio_chip *mm_gc;
+                struct of_gpio_chip *of_gc;
+                struct gpio_chip *gc;
+
+                ppc4xx_gc = kzalloc(sizeof(*ppc4xx_gc), GFP_KERNEL);
+                if (!ppc4xx_gc) {
+                        ret = -ENOMEM;
+                        goto err;
+                }
+
+                spin_lock_init(&ppc4xx_gc->lock);
+
+                mm_gc = &ppc4xx_gc->mm_gc;
+                of_gc = &mm_gc->of_gc;
+                gc = &of_gc->gc;
+
+                of_gc->gpio_cells = 2;
+                gc->ngpio = 32;
+                gc->direction_input = ppc4xx_gpio_dir_in;
+                gc->direction_output = ppc4xx_gpio_dir_out;
+                gc->get = ppc4xx_gpio_get;
+                gc->set = ppc4xx_gpio_set;
+
+                ret = of_mm_gpiochip_add(np, mm_gc);
+                if (ret)
+                        goto err;
+                continue;
+err:
+                pr_err("%s: registration failed with status %d\n",
+                       np->full_name, ret);
+                kfree(ppc4xx_gc);
+                /* try others anyway */
+        }
+        return 0;
+}
+arch_initcall(ppc4xx_add_gpiochips);
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index 4cd8083c58be..0cdcda35a05f 100644
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -212,7 +212,7 @@ static void __init iommu_set_exclusion_range(struct amd_iommu *iommu)
 /* Programs the physical address of the device table into the IOMMU hardware */
 static void __init iommu_set_device_table(struct amd_iommu *iommu)
 {
-        u32 entry;
+        u64 entry;
 
         BUG_ON(iommu->mmio_base == NULL);
 
diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
index ccf6c503fc3b..d1d4dc52f649 100644
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c
@@ -36,7 +36,7 @@ void ack_bad_irq(unsigned int irq)
 }
 
 #ifdef CONFIG_X86_32
-# define irq_stats(x)           (&per_cpu(irq_stat,x))
+# define irq_stats(x)           (&per_cpu(irq_stat, x))
 #else
 # define irq_stats(x)           cpu_pda(x)
 #endif
@@ -113,7 +113,7 @@ int show_interrupts(struct seq_file *p, void *v)
         if (i == 0) {
                 seq_printf(p, "           ");
                 for_each_online_cpu(j)
-                        seq_printf(p, "CPU%-8d",j);
+                        seq_printf(p, "CPU%-8d", j);
                 seq_putc(p, '\n');
         }
 
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index 192624820217..1972266e8ba5 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -9,8 +9,6 @@
 #include <asm/calgary.h>
 #include <asm/amd_iommu.h>
 
-static int forbid_dac __read_mostly;
-
 struct dma_mapping_ops *dma_ops;
 EXPORT_SYMBOL(dma_ops);
 
@@ -293,17 +291,3 @@ void pci_iommu_shutdown(void)
 }
 /* Must execute after PCI subsystem */
 fs_initcall(pci_iommu_init);
-
-#ifdef CONFIG_PCI
-/* Many VIA bridges seem to corrupt data for DAC. Disable it here */
-
-static __devinit void via_no_dac(struct pci_dev *dev)
-{
-        if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI && forbid_dac == 0) {
-                printk(KERN_INFO "PCI: VIA PCI bridge detected."
-                                 "Disabling DAC.\n");
-                forbid_dac = 1;
-        }
-}
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_ANY_ID, via_no_dac);
-#endif
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index a213260b51e5..6c873dceb177 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -64,7 +64,12 @@ choice
         default XTENSA_VARIANT_FSF
 
 config XTENSA_VARIANT_FSF
-        bool "fsf"
+        bool "fsf - default (not generic) configuration"
+
+config XTENSA_VARIANT_DC232B
+        bool "dc232b - Diamond 232L Standard Core Rev.B (LE)"
+        help
+        This variant refers to Tensilica's Diamond 232L Standard core Rev.B (LE).
 endchoice
 
 config MMU
diff --git a/arch/xtensa/Makefile b/arch/xtensa/Makefile
index 4bd1e14c6b90..015b6b2a26b9 100644
--- a/arch/xtensa/Makefile
+++ b/arch/xtensa/Makefile
@@ -14,6 +14,7 @@
 # (Use VAR=<xtensa_config> to use another default compiler.)
 
 variant-$(CONFIG_XTENSA_VARIANT_FSF)            := fsf
+variant-$(CONFIG_XTENSA_VARIANT_DC232B)         := dc232b
 variant-$(CONFIG_XTENSA_VARIANT_LINUX_CUSTOM)   := custom
 
 VARIANT = $(variant-y)
diff --git a/arch/xtensa/kernel/irq.c b/arch/xtensa/kernel/irq.c
index c9ea73b7031b..5fbcde59a92d 100644
--- a/arch/xtensa/kernel/irq.c
+++ b/arch/xtensa/kernel/irq.c
@@ -48,7 +48,7 @@ asmlinkage void do_IRQ(int irq, struct pt_regs *regs)
 
         if (irq >= NR_IRQS) {
                 printk(KERN_EMERG "%s: cannot handle IRQ %d\n",
-                                __FUNCTION__, irq);
+                                __func__, irq);
         }
 
         irq_enter();
diff --git a/arch/xtensa/platforms/iss/network.c b/arch/xtensa/platforms/iss/network.c
index a2e252217428..11a20adc1409 100644
--- a/arch/xtensa/platforms/iss/network.c
+++ b/arch/xtensa/platforms/iss/network.c
@@ -640,7 +640,7 @@ static int iss_net_configure(int index, char *init)
         *lp = ((struct iss_net_private) {
                 .device_list            = LIST_HEAD_INIT(lp->device_list),
                 .opened_list            = LIST_HEAD_INIT(lp->opened_list),
-                .lock                   = SPIN_LOCK_UNLOCKED,
+                .lock                   = __SPIN_LOCK_UNLOCKED(lp.lock),
                 .dev                    = dev,
                 .index                  = index,
                 //.fd                   = -1,
diff --git a/drivers/Kconfig b/drivers/Kconfig
index d19b6f5a1106..d38f43f593d4 100644
--- a/drivers/Kconfig
+++ b/drivers/Kconfig
@@ -78,6 +78,8 @@ source "drivers/hid/Kconfig"
 
 source "drivers/usb/Kconfig"
 
+source "drivers/uwb/Kconfig"
+
 source "drivers/mmc/Kconfig"
 
 source "drivers/memstick/Kconfig"
diff --git a/drivers/Makefile b/drivers/Makefile
index 46c8681a07f4..cadc64fe8f68 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -100,3 +100,4 @@ obj-$(CONFIG_SSB)		+= ssb/
 obj-$(CONFIG_VIRTIO)            += virtio/
 obj-$(CONFIG_REGULATOR)         += regulator/
 obj-$(CONFIG_STAGING)           += staging/
+obj-$(CONFIG_UWB)               += uwb/
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 1ee9499bd343..bbb3cae57492 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -5373,6 +5373,8 @@ struct ata_port *ata_port_alloc(struct ata_host *host)
 
 #ifdef CONFIG_ATA_SFF
         INIT_DELAYED_WORK(&ap->port_task, ata_pio_task);
+#else
+        INIT_DELAYED_WORK(&ap->port_task, NULL);
 #endif
         INIT_DELAYED_WORK(&ap->hotplug_task, ata_scsi_hotplug);
         INIT_WORK(&ap->scsi_rescan_task, ata_scsi_dev_rescan);
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index a93247cc395a..5d687d7cffae 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -1206,7 +1206,10 @@ void ata_eh_about_to_do(struct ata_link *link, struct ata_device *dev,
 
         ata_eh_clear_action(link, dev, ehi, action);
 
-        if (!(ehc->i.flags & ATA_EHI_QUIET))
+        /* About to take EH action, set RECOVERED.  Ignore actions on
+         * slave links as master will do them again.
+         */
+        if (!(ehc->i.flags & ATA_EHI_QUIET) && link != ap->slave_link)
                 ap->pflags |= ATA_PFLAG_RECOVERED;
 
         spin_unlock_irqrestore(ap->lock, flags);
@@ -2010,8 +2013,13 @@ void ata_eh_autopsy(struct ata_port *ap)
                 struct ata_eh_context *mehc = &ap->link.eh_context;
                 struct ata_eh_context *sehc = &ap->slave_link->eh_context;
 
+                /* transfer control flags from master to slave */
+                sehc->i.flags |= mehc->i.flags & ATA_EHI_TO_SLAVE_MASK;
+
+                /* perform autopsy on the slave link */
                 ata_eh_link_autopsy(ap->slave_link);
 
+                /* transfer actions from slave to master and clear slave */
                 ata_eh_about_to_do(ap->slave_link, NULL, ATA_EH_ALL_ACTIONS);
                 mehc->i.action          |= sehc->i.action;
                 mehc->i.dev_action[1]   |= sehc->i.dev_action[1];
@@ -2447,14 +2455,14 @@ int ata_eh_reset(struct ata_link *link, int classify,
                 dev->pio_mode = XFER_PIO_0;
                 dev->flags &= ~ATA_DFLAG_SLEEPING;
 
-                if (ata_phys_link_offline(ata_dev_phys_link(dev)))
-                        continue;
-
-                /* apply class override */
-                if (lflags & ATA_LFLAG_ASSUME_ATA)
-                        classes[dev->devno] = ATA_DEV_ATA;
-                else if (lflags & ATA_LFLAG_ASSUME_SEMB)
-                        classes[dev->devno] = ATA_DEV_SEMB_UNSUP; /* not yet */
+                if (!ata_phys_link_offline(ata_dev_phys_link(dev))) {
+                        /* apply class override */
+                        if (lflags & ATA_LFLAG_ASSUME_ATA)
+                                classes[dev->devno] = ATA_DEV_ATA;
+                        else if (lflags & ATA_LFLAG_ASSUME_SEMB)
+                                classes[dev->devno] = ATA_DEV_SEMB_UNSUP;
+                } else
+                        classes[dev->devno] = ATA_DEV_NONE;
         }
 
         /* record current link speed */
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index 2a4c516894f0..4b4739486327 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -2153,8 +2153,17 @@ void ata_sff_error_handler(struct ata_port *ap)
  */
 void ata_sff_post_internal_cmd(struct ata_queued_cmd *qc)
 {
-        if (qc->ap->ioaddr.bmdma_addr)
+        struct ata_port *ap = qc->ap;
+        unsigned long flags;
+
+        spin_lock_irqsave(ap->lock, flags);
+
+        ap->hsm_task_state = HSM_ST_IDLE;
+
+        if (ap->ioaddr.bmdma_addr)
                 ata_bmdma_stop(qc);
+
+        spin_unlock_irqrestore(ap->lock, flags);
 }
 
 /**
diff --git a/drivers/ata/sata_via.c b/drivers/ata/sata_via.c
index 1cfa74535d91..5b72e734300a 100644
--- a/drivers/ata/sata_via.c
+++ b/drivers/ata/sata_via.c
@@ -70,6 +70,7 @@ enum {
 static int svia_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
 static int svia_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
 static int svia_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
+static void svia_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
 static void svia_noop_freeze(struct ata_port *ap);
 static int vt6420_prereset(struct ata_link *link, unsigned long deadline);
 static int vt6421_pata_cable_detect(struct ata_port *ap);
@@ -103,21 +104,26 @@ static struct scsi_host_template svia_sht = {
         ATA_BMDMA_SHT(DRV_NAME),
 };
 
-static struct ata_port_operations vt6420_sata_ops = {
+static struct ata_port_operations svia_base_ops = {
         .inherits               = &ata_bmdma_port_ops,
+        .sff_tf_load            = svia_tf_load,
+};
+
+static struct ata_port_operations vt6420_sata_ops = {
+        .inherits               = &svia_base_ops,
         .freeze                 = svia_noop_freeze,
         .prereset               = vt6420_prereset,
 };
 
 static struct ata_port_operations vt6421_pata_ops = {
-        .inherits               = &ata_bmdma_port_ops,
+        .inherits               = &svia_base_ops,
         .cable_detect           = vt6421_pata_cable_detect,
         .set_piomode            = vt6421_set_pio_mode,
         .set_dmamode            = vt6421_set_dma_mode,
 };
 
 static struct ata_port_operations vt6421_sata_ops = {
-        .inherits               = &ata_bmdma_port_ops,
+        .inherits               = &svia_base_ops,
         .scr_read               = svia_scr_read,
         .scr_write              = svia_scr_write,
 };
@@ -168,6 +174,29 @@ static int svia_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)
         return 0;
 }
 
+/**
+ *      svia_tf_load - send taskfile registers to host controller
+ *      @ap: Port to which output is sent
+ *      @tf: ATA taskfile register set
+ *
+ *      Outputs ATA taskfile to standard ATA host controller.
+ *
+ *      This is to fix the internal bug of via chipsets, which will
+ *      reset the device register after changing the IEN bit on ctl
+ *      register.
+ */
+static void svia_tf_load(struct ata_port *ap, const struct ata_taskfile *tf)
+{
+        struct ata_taskfile ttf;
+
+        if (tf->ctl != ap->last_ctl)  {
+                ttf = *tf;
+                ttf.flags |= ATA_TFLAG_DEVICE;
+                tf = &ttf;
+        }
+        ata_sff_tf_load(ap, tf);
+}
+
 static void svia_noop_freeze(struct ata_port *ap)
 {
         /* Some VIA controllers choke if ATA_NIEN is manipulated in
diff --git a/drivers/char/hvc_console.c b/drivers/char/hvc_console.c
index bf70450a49cc..5b819b12675a 100644
--- a/drivers/char/hvc_console.c
+++ b/drivers/char/hvc_console.c
@@ -161,7 +161,7 @@ static void hvc_console_print(struct console *co, const char *b,
                         }
                 } else {
                         r = cons_ops[index]->put_chars(vtermnos[index], c, i);
-                        if (r < 0) {
+                        if (r <= 0) {
                                 /* throw away chars on error */
                                 i = 0;
                         } else if (r > 0) {
@@ -374,6 +374,9 @@ static void hvc_close(struct tty_struct *tty, struct file * filp)
                 if (hp->ops->notifier_del)
                         hp->ops->notifier_del(hp, hp->data);
 
+                /* cancel pending tty resize work */
+                cancel_work_sync(&hp->tty_resize);
+
                 /*
                  * Chain calls chars_in_buffer() and returns immediately if
                  * there is no buffered data otherwise sleeps on a wait queue
@@ -399,6 +402,9 @@ static void hvc_hangup(struct tty_struct *tty)
         if (!hp)
                 return;
 
+        /* cancel pending tty resize work */
+        cancel_work_sync(&hp->tty_resize);
+
         spin_lock_irqsave(&hp->lock, flags);
 
         /*
@@ -418,8 +424,8 @@ static void hvc_hangup(struct tty_struct *tty)
 
         spin_unlock_irqrestore(&hp->lock, flags);
 
-        if (hp->ops->notifier_del)
-                        hp->ops->notifier_del(hp, hp->data);
+        if (hp->ops->notifier_hangup)
+                        hp->ops->notifier_hangup(hp, hp->data);
 
         while(temp_open_count) {
                 --temp_open_count;
@@ -431,7 +437,7 @@ static void hvc_hangup(struct tty_struct *tty)
  * Push buffered characters whether they were just recently buffered or waiting
  * on a blocked hypervisor.  Call this function with hp->lock held.
  */
-static void hvc_push(struct hvc_struct *hp)
+static int hvc_push(struct hvc_struct *hp)
 {
         int n;
 
@@ -439,7 +445,7 @@ static void hvc_push(struct hvc_struct *hp)
         if (n <= 0) {
                 if (n == 0) {
                         hp->do_wakeup = 1;
-                        return;
+                        return 0;
                 }
                 /* throw away output on error; this happens when
                    there is no session connected to the vterm. */
@@ -450,6 +456,8 @@ static void hvc_push(struct hvc_struct *hp)
                 memmove(hp->outbuf, hp->outbuf + n, hp->n_outbuf);
         else
                 hp->do_wakeup = 1;
+
+        return n;
 }
 
 static int hvc_write(struct tty_struct *tty, const unsigned char *buf, int count)
@@ -492,6 +500,39 @@ static int hvc_write(struct tty_struct *tty, const unsigned char *buf, int count
         return written;
 }
 
+/**
+ * hvc_set_winsz() - Resize the hvc tty terminal window.
+ * @work:       work structure.
+ *
+ * The routine shall not be called within an atomic context because it
+ * might sleep.
+ *
+ * Locking:     hp->lock
+ */
+static void hvc_set_winsz(struct work_struct *work)
+{
+        struct hvc_struct *hp;
+        unsigned long hvc_flags;
+        struct tty_struct *tty;
+        struct winsize ws;
+
+        hp = container_of(work, struct hvc_struct, tty_resize);
+        if (!hp)
+                return;
+
+        spin_lock_irqsave(&hp->lock, hvc_flags);
+        if (!hp->tty) {
+                spin_unlock_irqrestore(&hp->lock, hvc_flags);
+                return;
+        }
+        ws  = hp->ws;
+        tty = tty_kref_get(hp->tty);
+        spin_unlock_irqrestore(&hp->lock, hvc_flags);
+
+        tty_do_resize(tty, tty, &ws);
+        tty_kref_put(tty);
+}
+
 /*
  * This is actually a contract between the driver and the tty layer outlining
  * how much write room the driver can guarantee will be sent OR BUFFERED.  This
@@ -538,16 +579,20 @@ int hvc_poll(struct hvc_struct *hp)
         char buf[N_INBUF] __ALIGNED__;
         unsigned long flags;
         int read_total = 0;
+        int written_total = 0;
 
         spin_lock_irqsave(&hp->lock, flags);
 
         /* Push pending writes */
         if (hp->n_outbuf > 0)
-                hvc_push(hp);
+                written_total = hvc_push(hp);
 
         /* Reschedule us if still some write pending */
-        if (hp->n_outbuf > 0)
+        if (hp->n_outbuf > 0) {
                 poll_mask |= HVC_POLL_WRITE;
+                /* If hvc_push() was not able to write, sleep a few msecs */
+                timeout = (written_total) ? 0 : MIN_TIMEOUT;
+        }
 
         /* No tty attached, just skip */
         tty = hp->tty;
@@ -632,6 +677,24 @@ int hvc_poll(struct hvc_struct *hp)
 }
 EXPORT_SYMBOL_GPL(hvc_poll);
 
+/**
+ * hvc_resize() - Update terminal window size information.
+ * @hp:         HVC console pointer
+ * @ws:         Terminal window size structure
+ *
+ * Stores the specified window size information in the hvc structure of @hp.
+ * The function schedule the tty resize update.
+ *
+ * Locking:     Locking free; the function MUST be called holding hp->lock
+ */
+void hvc_resize(struct hvc_struct *hp, struct winsize ws)
+{
+        if ((hp->ws.ws_row != ws.ws_row) || (hp->ws.ws_col != ws.ws_col)) {
+                hp->ws = ws;
+                schedule_work(&hp->tty_resize);
+        }
+}
+
 /*
  * This kthread is either polling or interrupt driven.  This is determined by
  * calling hvc_poll() who determines whether a console adapter support
@@ -659,10 +722,6 @@ static int khvcd(void *unused)
                         poll_mask |= HVC_POLL_READ;
                 if (hvc_kicked)
                         continue;
-                if (poll_mask & HVC_POLL_WRITE) {
-                        yield();
-                        continue;
-                }
                 set_current_state(TASK_INTERRUPTIBLE);
                 if (!hvc_kicked) {
                         if (poll_mask == 0)
@@ -718,6 +777,7 @@ struct hvc_struct __devinit *hvc_alloc(uint32_t vtermno, int data,
 
         kref_init(&hp->kref);
 
+        INIT_WORK(&hp->tty_resize, hvc_set_winsz);
         spin_lock_init(&hp->lock);
         spin_lock(&hvc_structs_lock);
 
@@ -743,7 +803,7 @@ struct hvc_struct __devinit *hvc_alloc(uint32_t vtermno, int data,
 }
 EXPORT_SYMBOL_GPL(hvc_alloc);
 
-int __devexit hvc_remove(struct hvc_struct *hp)
+int hvc_remove(struct hvc_struct *hp)
 {
         unsigned long flags;
         struct tty_struct *tty;
@@ -796,7 +856,7 @@ static int hvc_init(void)
         drv->minor_start = HVC_MINOR;
         drv->type = TTY_DRIVER_TYPE_SYSTEM;
         drv->init_termios = tty_std_termios;
-        drv->flags = TTY_DRIVER_REAL_RAW;
+        drv->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_RESET_TERMIOS;
         tty_set_operations(drv, &hvc_ops);
 
         /* Always start the kthread because there can be hotplug vty adapters
diff --git a/drivers/char/hvc_console.h b/drivers/char/hvc_console.h
index 9790201718ae..8297dbc2e6ec 100644
--- a/drivers/char/hvc_console.h
+++ b/drivers/char/hvc_console.h
@@ -27,6 +27,7 @@
 #ifndef HVC_CONSOLE_H
 #define HVC_CONSOLE_H
 #include <linux/kref.h>
+#include <linux/tty.h>
 
 /*
  * This is the max number of console adapters that can/will be found as
@@ -56,6 +57,8 @@ struct hvc_struct {
         struct hv_ops *ops;
         int irq_requested;
         int data;
+        struct winsize ws;
+        struct work_struct tty_resize;
         struct list_head next;
         struct kref kref; /* ref count & hvc_struct lifetime */
 };
@@ -65,9 +68,10 @@ struct hv_ops {
         int (*get_chars)(uint32_t vtermno, char *buf, int count);
         int (*put_chars)(uint32_t vtermno, const char *buf, int count);
 
-        /* Callbacks for notification. Called in open and close */
+        /* Callbacks for notification. Called in open, close and hangup */
         int (*notifier_add)(struct hvc_struct *hp, int irq);
         void (*notifier_del)(struct hvc_struct *hp, int irq);
+        void (*notifier_hangup)(struct hvc_struct *hp, int irq);
 };
 
 /* Register a vterm and a slot index for use as a console (console_init) */
@@ -77,15 +81,19 @@ extern int hvc_instantiate(uint32_t vtermno, int index, struct hv_ops *ops);
 extern struct hvc_struct * __devinit hvc_alloc(uint32_t vtermno, int data,
                                 struct hv_ops *ops, int outbuf_size);
 /* remove a vterm from hvc tty operation (module_exit or hotplug remove) */
-extern int __devexit hvc_remove(struct hvc_struct *hp);
+extern int hvc_remove(struct hvc_struct *hp);
 
 /* data available */
 int hvc_poll(struct hvc_struct *hp);
 void hvc_kick(void);
 
+/* Resize hvc tty terminal window */
+extern void hvc_resize(struct hvc_struct *hp, struct winsize ws);
+
 /* default notifier for irq based notification */
 extern int notifier_add_irq(struct hvc_struct *hp, int data);
 extern void notifier_del_irq(struct hvc_struct *hp, int data);
+extern void notifier_hangup_irq(struct hvc_struct *hp, int data);
 
 
 #if defined(CONFIG_XMON) && defined(CONFIG_SMP)
diff --git a/drivers/char/hvc_irq.c b/drivers/char/hvc_irq.c
index 73a59cdb8947..d09e5688d449 100644
--- a/drivers/char/hvc_irq.c
+++ b/drivers/char/hvc_irq.c
@@ -42,3 +42,8 @@ void notifier_del_irq(struct hvc_struct *hp, int irq)
         free_irq(irq, hp);
         hp->irq_requested = 0;
 }
+
+void notifier_hangup_irq(struct hvc_struct *hp, int irq)
+{
+        notifier_del_irq(hp, irq);
+}
diff --git a/drivers/char/hvc_iseries.c b/drivers/char/hvc_iseries.c
index b71c610fe5ae..b74a2f8ab908 100644
--- a/drivers/char/hvc_iseries.c
+++ b/drivers/char/hvc_iseries.c
@@ -202,6 +202,7 @@ static struct hv_ops hvc_get_put_ops = {
         .put_chars = put_chars,
         .notifier_add = notifier_add_irq,
         .notifier_del = notifier_del_irq,
+        .notifier_hangup = notifier_hangup_irq,
 };
 
 static int __devinit hvc_vio_probe(struct vio_dev *vdev,
diff --git a/drivers/char/hvc_vio.c b/drivers/char/hvc_vio.c
index 93f3840c1682..019e0b58593d 100644
--- a/drivers/char/hvc_vio.c
+++ b/drivers/char/hvc_vio.c
@@ -82,6 +82,7 @@ static struct hv_ops hvc_get_put_ops = {
         .put_chars = hvc_put_chars,
         .notifier_add = notifier_add_irq,
         .notifier_del = notifier_del_irq,
+        .notifier_hangup = notifier_hangup_irq,
 };
 
 static int __devinit hvc_vio_probe(struct vio_dev *vdev,
diff --git a/drivers/char/hvc_xen.c b/drivers/char/hvc_xen.c
index 538ceea5e7df..eba999f8598d 100644
--- a/drivers/char/hvc_xen.c
+++ b/drivers/char/hvc_xen.c
@@ -102,6 +102,7 @@ static struct hv_ops hvc_ops = {
         .put_chars = write_console,
         .notifier_add = notifier_add_irq,
         .notifier_del = notifier_del_irq,
+        .notifier_hangup = notifier_hangup_irq,
 };
 
 static int __init xen_init(void)
diff --git a/drivers/char/tty_port.c b/drivers/char/tty_port.c
index 553b0e9d8d17..c8f8024cb40e 100644
--- a/drivers/char/tty_port.c
+++ b/drivers/char/tty_port.c
@@ -90,7 +90,7 @@ void tty_port_tty_set(struct tty_port *port, struct tty_struct *tty)
         spin_lock_irqsave(&port->lock, flags);
         if (port->tty)
                 tty_kref_put(port->tty);
-        port->tty = tty;
+        port->tty = tty_kref_get(tty);
         spin_unlock_irqrestore(&port->lock, flags);
 }
 EXPORT_SYMBOL(tty_port_tty_set);
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index d0f4eb6fdb7f..3fb0d2c88ba5 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -198,6 +198,7 @@ static int __devinit virtcons_probe(struct virtio_device *dev)
         virtio_cons.put_chars = put_chars;
         virtio_cons.notifier_add = notifier_add_vio;
         virtio_cons.notifier_del = notifier_del_vio;
+        virtio_cons.notifier_hangup = notifier_del_vio;
 
         /* The first argument of hvc_alloc() is the virtual console number, so
          * we use zero.  The second argument is the parameter for the
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index dbd42d6c93a7..7f2ee27fe76b 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -127,6 +127,13 @@ config GPIO_PCF857X
           This driver provides an in-kernel interface to those GPIOs using
           platform-neutral GPIO calls.
 
+config GPIO_TWL4030
+        tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
+        depends on TWL4030_CORE
+        help
+          Say yes here to access the GPIO signals of various multi-function
+          power management chips from Texas Instruments.
+
 comment "PCI GPIO expanders:"
 
 config GPIO_BT8XX
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index 01b4bbde1956..6aafdeb9ad03 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -9,4 +9,5 @@ obj-$(CONFIG_GPIO_MAX732X)	+= max732x.o
 obj-$(CONFIG_GPIO_MCP23S08)     += mcp23s08.o
 obj-$(CONFIG_GPIO_PCA953X)      += pca953x.o
 obj-$(CONFIG_GPIO_PCF857X)      += pcf857x.o
+obj-$(CONFIG_GPIO_TWL4030)      += twl4030-gpio.o
 obj-$(CONFIG_GPIO_BT8XX)        += bt8xxgpio.o
diff --git a/drivers/gpio/twl4030-gpio.c b/drivers/gpio/twl4030-gpio.c
new file mode 100644
index 000000000000..37d3eec8730a
--- /dev/null
+++ b/drivers/gpio/twl4030-gpio.c
@@ -0,0 +1,521 @@
+/*
+ * twl4030_gpio.c -- access to GPIOs on TWL4030/TPS659x0 chips
+ *
+ * Copyright (C) 2006-2007 Texas Instruments, Inc.
+ * Copyright (C) 2006 MontaVista Software, Inc.
+ *
+ * Code re-arranged and cleaned up by:
+ *      Syed Mohammed Khasim <x0khasim@ti.com>
+ *
+ * Initial Code:
+ *      Andy Lowe / Nishanth Menon
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/kthread.h>
+#include <linux/irq.h>
+#include <linux/gpio.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#include <linux/i2c/twl4030.h>
+
+
+/*
+ * The GPIO "subchip" supports 18 GPIOs which can be configured as
+ * inputs or outputs, with pullups or pulldowns on each pin.  Each
+ * GPIO can trigger interrupts on either or both edges.
+ *
+ * GPIO interrupts can be fed to either of two IRQ lines; this is
+ * intended to support multiple hosts.
+ *
+ * There are also two LED pins used sometimes as output-only GPIOs.
+ */
+
+
+static struct gpio_chip twl_gpiochip;
+static int twl4030_gpio_irq_base;
+
+/* genirq interfaces are not available to modules */
+#ifdef MODULE
+#define is_module()     true
+#else
+#define is_module()     false
+#endif
+
+/* GPIO_CTRL Fields */
+#define MASK_GPIO_CTRL_GPIO0CD1         BIT(0)
+#define MASK_GPIO_CTRL_GPIO1CD2         BIT(1)
+#define MASK_GPIO_CTRL_GPIO_ON          BIT(2)
+
+/* Mask for GPIO registers when aggregated into a 32-bit integer */
+#define GPIO_32_MASK                    0x0003ffff
+
+/* Data structures */
+static DEFINE_MUTEX(gpio_lock);
+
+/* store usage of each GPIO. - each bit represents one GPIO */
+static unsigned int gpio_usage_count;
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * To configure TWL4030 GPIO module registers
+ */
+static inline int gpio_twl4030_write(u8 address, u8 data)
+{
+        return twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, data, address);
+}
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * LED register offsets (use TWL4030_MODULE_{LED,PWMA,PWMB}))
+ * PWMs A and B are dedicated to LEDs A and B, respectively.
+ */
+
+#define TWL4030_LED_LEDEN       0x0
+
+/* LEDEN bits */
+#define LEDEN_LEDAON            BIT(0)
+#define LEDEN_LEDBON            BIT(1)
+#define LEDEN_LEDAEXT           BIT(2)
+#define LEDEN_LEDBEXT           BIT(3)
+#define LEDEN_LEDAPWM           BIT(4)
+#define LEDEN_LEDBPWM           BIT(5)
+#define LEDEN_PWM_LENGTHA       BIT(6)
+#define LEDEN_PWM_LENGTHB       BIT(7)
+
+#define TWL4030_PWMx_PWMxON     0x0
+#define TWL4030_PWMx_PWMxOFF    0x1
+
+#define PWMxON_LENGTH           BIT(7)
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * To read a TWL4030 GPIO module register
+ */
+static inline int gpio_twl4030_read(u8 address)
+{
+        u8 data;
+        int ret = 0;
+
+        ret = twl4030_i2c_read_u8(TWL4030_MODULE_GPIO, &data, address);
+        return (ret < 0) ? ret : data;
+}
+
+/*----------------------------------------------------------------------*/
+
+static u8 cached_leden;         /* protected by gpio_lock */
+
+/* The LED lines are open drain outputs ... a FET pulls to GND, so an
+ * external pullup is needed.  We could also expose the integrated PWM
+ * as a LED brightness control; we initialize it as "always on".
+ */
+static void twl4030_led_set_value(int led, int value)
+{
+        u8 mask = LEDEN_LEDAON | LEDEN_LEDAPWM;
+        int status;
+
+        if (led)
+                mask <<= 1;
+
+        mutex_lock(&gpio_lock);
+        if (value)
+                cached_leden &= ~mask;
+        else
+                cached_leden |= mask;
+        status = twl4030_i2c_write_u8(TWL4030_MODULE_LED, cached_leden,
+                        TWL4030_LED_LEDEN);
+        mutex_unlock(&gpio_lock);
+}
+
+static int twl4030_set_gpio_direction(int gpio, int is_input)
+{
+        u8 d_bnk = gpio >> 3;
+        u8 d_msk = BIT(gpio & 0x7);
+        u8 reg = 0;
+        u8 base = REG_GPIODATADIR1 + d_bnk;
+        int ret = 0;
+
+        mutex_lock(&gpio_lock);
+        ret = gpio_twl4030_read(base);
+        if (ret >= 0) {
+                if (is_input)
+                        reg = ret & ~d_msk;
+                else
+                        reg = ret | d_msk;
+
+                ret = gpio_twl4030_write(base, reg);
+        }
+        mutex_unlock(&gpio_lock);
+        return ret;
+}
+
+static int twl4030_set_gpio_dataout(int gpio, int enable)
+{
+        u8 d_bnk = gpio >> 3;
+        u8 d_msk = BIT(gpio & 0x7);
+        u8 base = 0;
+
+        if (enable)
+                base = REG_SETGPIODATAOUT1 + d_bnk;
+        else
+                base = REG_CLEARGPIODATAOUT1 + d_bnk;
+
+        return gpio_twl4030_write(base, d_msk);
+}
+
+static int twl4030_get_gpio_datain(int gpio)
+{
+        u8 d_bnk = gpio >> 3;
+        u8 d_off = gpio & 0x7;
+        u8 base = 0;
+        int ret = 0;
+
+        if (unlikely((gpio >= TWL4030_GPIO_MAX)
+                || !(gpio_usage_count & BIT(gpio))))
+                return -EPERM;
+
+        base = REG_GPIODATAIN1 + d_bnk;
+        ret = gpio_twl4030_read(base);
+        if (ret > 0)
+                ret = (ret >> d_off) & 0x1;
+
+        return ret;
+}
+
+/*
+ * Configure debounce timing value for a GPIO pin on TWL4030
+ */
+int twl4030_set_gpio_debounce(int gpio, int enable)
+{
+        u8 d_bnk = gpio >> 3;
+        u8 d_msk = BIT(gpio & 0x7);
+        u8 reg = 0;
+        u8 base = 0;
+        int ret = 0;
+
+        if (unlikely((gpio >= TWL4030_GPIO_MAX)
+                || !(gpio_usage_count & BIT(gpio))))
+                return -EPERM;
+
+        base = REG_GPIO_DEBEN1 + d_bnk;
+        mutex_lock(&gpio_lock);
+        ret = gpio_twl4030_read(base);
+        if (ret >= 0) {
+                if (enable)
+                        reg = ret | d_msk;
+                else
+                        reg = ret & ~d_msk;
+
+                ret = gpio_twl4030_write(base, reg);
+        }
+        mutex_unlock(&gpio_lock);
+        return ret;
+}
+EXPORT_SYMBOL(twl4030_set_gpio_debounce);
+
+/*----------------------------------------------------------------------*/
+
+static int twl_request(struct gpio_chip *chip, unsigned offset)
+{
+        int status = 0;
+
+        mutex_lock(&gpio_lock);
+
+        /* Support the two LED outputs as output-only GPIOs. */
+        if (offset >= TWL4030_GPIO_MAX) {
+                u8      ledclr_mask = LEDEN_LEDAON | LEDEN_LEDAEXT
+                                | LEDEN_LEDAPWM | LEDEN_PWM_LENGTHA;
+                u8      module = TWL4030_MODULE_PWMA;
+
+                offset -= TWL4030_GPIO_MAX;
+                if (offset) {
+                        ledclr_mask <<= 1;
+                        module = TWL4030_MODULE_PWMB;
+                }
+
+                /* initialize PWM to always-drive */
+                status = twl4030_i2c_write_u8(module, 0x7f,
+                                TWL4030_PWMx_PWMxOFF);
+                if (status < 0)
+                        goto done;
+                status = twl4030_i2c_write_u8(module, 0x7f,
+                                TWL4030_PWMx_PWMxON);
+                if (status < 0)
+                        goto done;
+
+                /* init LED to not-driven (high) */
+                module = TWL4030_MODULE_LED;
+                status = twl4030_i2c_read_u8(module, &cached_leden,
+                                TWL4030_LED_LEDEN);
+                if (status < 0)
+                        goto done;
+                cached_leden &= ~ledclr_mask;
+                status = twl4030_i2c_write_u8(module, cached_leden,
+                                TWL4030_LED_LEDEN);
+                if (status < 0)
+                        goto done;
+
+                status = 0;
+                goto done;
+        }
+
+        /* on first use, turn GPIO module "on" */
+        if (!gpio_usage_count) {
+                struct twl4030_gpio_platform_data *pdata;
+                u8 value = MASK_GPIO_CTRL_GPIO_ON;
+
+                /* optionally have the first two GPIOs switch vMMC1
+                 * and vMMC2 power supplies based on card presence.
+                 */
+                pdata = chip->dev->platform_data;
+                value |= pdata->mmc_cd & 0x03;
+
+                status = gpio_twl4030_write(REG_GPIO_CTRL, value);
+        }
+
+        if (!status)
+                gpio_usage_count |= (0x1 << offset);
+
+done:
+        mutex_unlock(&gpio_lock);
+        return status;
+}
+
+static void twl_free(struct gpio_chip *chip, unsigned offset)
+{
+        if (offset >= TWL4030_GPIO_MAX) {
+                twl4030_led_set_value(offset - TWL4030_GPIO_MAX, 1);
+                return;
+        }
+
+        mutex_lock(&gpio_lock);
+
+        gpio_usage_count &= ~BIT(offset);
+
+        /* on last use, switch off GPIO module */
+        if (!gpio_usage_count)
+                gpio_twl4030_write(REG_GPIO_CTRL, 0x0);
+
+        mutex_unlock(&gpio_lock);
+}
+
+static int twl_direction_in(struct gpio_chip *chip, unsigned offset)
+{
+        return (offset < TWL4030_GPIO_MAX)
+                ? twl4030_set_gpio_direction(offset, 1)
+                : -EINVAL;
+}
+
+static int twl_get(struct gpio_chip *chip, unsigned offset)
+{
+        int status = 0;
+
+        if (offset < TWL4030_GPIO_MAX)
+                status = twl4030_get_gpio_datain(offset);
+        else if (offset == TWL4030_GPIO_MAX)
+                status = cached_leden & LEDEN_LEDAON;
+        else
+                status = cached_leden & LEDEN_LEDBON;
+        return (status < 0) ? 0 : status;
+}
+
+static int twl_direction_out(struct gpio_chip *chip, unsigned offset, int value)
+{
+        if (offset < TWL4030_GPIO_MAX) {
+                twl4030_set_gpio_dataout(offset, value);
+                return twl4030_set_gpio_direction(offset, 0);
+        } else {
+                twl4030_led_set_value(offset - TWL4030_GPIO_MAX, value);
+                return 0;
+        }
+}
+
+static void twl_set(struct gpio_chip *chip, unsigned offset, int value)
+{
+        if (offset < TWL4030_GPIO_MAX)
+                twl4030_set_gpio_dataout(offset, value);
+        else
+                twl4030_led_set_value(offset - TWL4030_GPIO_MAX, value);
+}
+
+static int twl_to_irq(struct gpio_chip *chip, unsigned offset)
+{
+        return (twl4030_gpio_irq_base && (offset < TWL4030_GPIO_MAX))
+                ? (twl4030_gpio_irq_base + offset)
+                : -EINVAL;
+}
+
+static struct gpio_chip twl_gpiochip = {
+        .label                  = "twl4030",
+        .owner                  = THIS_MODULE,
+        .request                = twl_request,
+        .free                   = twl_free,
+        .direction_input        = twl_direction_in,
+        .get                    = twl_get,
+        .direction_output       = twl_direction_out,
+        .set                    = twl_set,
+        .to_irq                 = twl_to_irq,
+        .can_sleep              = 1,
+};
+
+/*----------------------------------------------------------------------*/
+
+static int __devinit gpio_twl4030_pulls(u32 ups, u32 downs)
+{
+        u8              message[6];
+        unsigned        i, gpio_bit;
+
+        /* For most pins, a pulldown was enabled by default.
+         * We should have data that's specific to this board.
+         */
+        for (gpio_bit = 1, i = 1; i < 6; i++) {
+                u8              bit_mask;
+                unsigned        j;
+
+                for (bit_mask = 0, j = 0; j < 8; j += 2, gpio_bit <<= 1) {
+                        if (ups & gpio_bit)
+                                bit_mask |= 1 << (j + 1);
+                        else if (downs & gpio_bit)
+                                bit_mask |= 1 << (j + 0);
+                }
+                message[i] = bit_mask;
+        }
+
+        return twl4030_i2c_write(TWL4030_MODULE_GPIO, message,
+                                REG_GPIOPUPDCTR1, 5);
+}
+
+static int gpio_twl4030_remove(struct platform_device *pdev);
+
+static int __devinit gpio_twl4030_probe(struct platform_device *pdev)
+{
+        struct twl4030_gpio_platform_data *pdata = pdev->dev.platform_data;
+        int ret;
+
+        /* maybe setup IRQs */
+        if (pdata->irq_base) {
+                if (is_module()) {
+                        dev_err(&pdev->dev,
+                                "can't dispatch IRQs from modules\n");
+                        goto no_irqs;
+                }
+                ret = twl4030_sih_setup(TWL4030_MODULE_GPIO);
+                if (ret < 0)
+                        return ret;
+                WARN_ON(ret != pdata->irq_base);
+                twl4030_gpio_irq_base = ret;
+        }
+
+no_irqs:
+        /*
+         * NOTE:  boards may waste power if they don't set pullups
+         * and pulldowns correctly ... default for non-ULPI pins is
+         * pulldown, and some other pins may have external pullups
+         * or pulldowns.  Careful!
+         */
+        ret = gpio_twl4030_pulls(pdata->pullups, pdata->pulldowns);
+        if (ret)
+                dev_dbg(&pdev->dev, "pullups %.05x %.05x --> %d\n",
+                                pdata->pullups, pdata->pulldowns,
+                                ret);
+
+        twl_gpiochip.base = pdata->gpio_base;
+        twl_gpiochip.ngpio = TWL4030_GPIO_MAX;
+        twl_gpiochip.dev = &pdev->dev;
+
+        /* NOTE: we assume VIBRA_CTL.VIBRA_EN, in MODULE_AUDIO_VOICE,
+         * is (still) clear if use_leds is set.
+         */
+        if (pdata->use_leds)
+                twl_gpiochip.ngpio += 2;
+
+        ret = gpiochip_add(&twl_gpiochip);
+        if (ret < 0) {
+                dev_err(&pdev->dev,
+                                "could not register gpiochip, %d\n",
+                                ret);
+                twl_gpiochip.ngpio = 0;
+                gpio_twl4030_remove(pdev);
+        } else if (pdata->setup) {
+                int status;
+
+                status = pdata->setup(&pdev->dev,
+                                pdata->gpio_base, TWL4030_GPIO_MAX);
+                if (status)
+                        dev_dbg(&pdev->dev, "setup --> %d\n", status);
+        }
+
+        return ret;
+}
+
+static int __devexit gpio_twl4030_remove(struct platform_device *pdev)
+{
+        struct twl4030_gpio_platform_data *pdata = pdev->dev.platform_data;
+        int status;
+
+        if (pdata->teardown) {
+                status = pdata->teardown(&pdev->dev,
+                                pdata->gpio_base, TWL4030_GPIO_MAX);
+                if (status) {
+                        dev_dbg(&pdev->dev, "teardown --> %d\n", status);
+                        return status;
+                }
+        }
+
+        status = gpiochip_remove(&twl_gpiochip);
+        if (status < 0)
+                return status;
+
+        if (is_module())
+                return 0;
+
+        /* REVISIT no support yet for deregistering all the IRQs */
+        WARN_ON(1);
+        return -EIO;
+}
+
+/* Note:  this hardware lives inside an I2C-based multi-function device. */
+MODULE_ALIAS("platform:twl4030_gpio");
+
+static struct platform_driver gpio_twl4030_driver = {
+        .driver.name    = "twl4030_gpio",
+        .driver.owner   = THIS_MODULE,
+        .probe          = gpio_twl4030_probe,
+        .remove         = __devexit_p(gpio_twl4030_remove),
+};
+
+static int __init gpio_twl4030_init(void)
+{
+        return platform_driver_register(&gpio_twl4030_driver);
+}
+subsys_initcall(gpio_twl4030_init);
+
+static void __exit gpio_twl4030_exit(void)
+{
+        platform_driver_unregister(&gpio_twl4030_driver);
+}
+module_exit(gpio_twl4030_exit);
+
+MODULE_AUTHOR("Texas Instruments, Inc.");
+MODULE_DESCRIPTION("GPIO interface for TWL4030");
+MODULE_LICENSE("GPL");
diff --git a/drivers/i2c/busses/i2c-cpm.c b/drivers/i2c/busses/i2c-cpm.c
index 8164de1f4d72..228f75723063 100644
--- a/drivers/i2c/busses/i2c-cpm.c
+++ b/drivers/i2c/busses/i2c-cpm.c
@@ -423,7 +423,6 @@ static const struct i2c_adapter cpm_ops = {
         .owner          = THIS_MODULE,
         .name           = "i2c-cpm",
         .algo           = &cpm_i2c_algo,
-        .class          = I2C_CLASS_HWMON | I2C_CLASS_SPD,
 };
 
 static int __devinit cpm_i2c_setup(struct cpm_i2c *cpm)
diff --git a/drivers/ide/Makefile b/drivers/ide/Makefile
index 093d3248ca89..9cf92ac939d2 100644
--- a/drivers/ide/Makefile
+++ b/drivers/ide/Makefile
@@ -18,22 +18,66 @@ ide-core-$(CONFIG_BLK_DEV_IDEACPI)	+= ide-acpi.o
 
 obj-$(CONFIG_IDE)                       += ide-core.o
 
-ifeq ($(CONFIG_IDE_ARM), y)
-        ide-arm-core-y += arm/ide_arm.o
-        obj-y += ide-arm-core.o
-endif
-
-obj-$(CONFIG_IDE)                       += legacy/ pci/
+obj-$(CONFIG_IDE_ARM)                   += ide_arm.o
+
+obj-$(CONFIG_BLK_DEV_ALI14XX)           += ali14xx.o
+obj-$(CONFIG_BLK_DEV_UMC8672)           += umc8672.o
+obj-$(CONFIG_BLK_DEV_DTC2278)           += dtc2278.o
+obj-$(CONFIG_BLK_DEV_HT6560B)           += ht6560b.o
+obj-$(CONFIG_BLK_DEV_QD65XX)            += qd65xx.o
+obj-$(CONFIG_BLK_DEV_4DRIVES)           += ide-4drives.o
+
+obj-$(CONFIG_BLK_DEV_GAYLE)             += gayle.o
+obj-$(CONFIG_BLK_DEV_FALCON_IDE)        += falconide.o
+obj-$(CONFIG_BLK_DEV_MAC_IDE)           += macide.o
+obj-$(CONFIG_BLK_DEV_Q40IDE)            += q40ide.o
+obj-$(CONFIG_BLK_DEV_BUDDHA)            += buddha.o
+
+obj-$(CONFIG_BLK_DEV_AEC62XX)           += aec62xx.o
+obj-$(CONFIG_BLK_DEV_ALI15X3)           += alim15x3.o
+obj-$(CONFIG_BLK_DEV_AMD74XX)           += amd74xx.o
+obj-$(CONFIG_BLK_DEV_ATIIXP)            += atiixp.o
+obj-$(CONFIG_BLK_DEV_CELLEB)            += scc_pata.o
+obj-$(CONFIG_BLK_DEV_CMD64X)            += cmd64x.o
+obj-$(CONFIG_BLK_DEV_CS5520)            += cs5520.o
+obj-$(CONFIG_BLK_DEV_CS5530)            += cs5530.o
+obj-$(CONFIG_BLK_DEV_CS5535)            += cs5535.o
+obj-$(CONFIG_BLK_DEV_SC1200)            += sc1200.o
+obj-$(CONFIG_BLK_DEV_CY82C693)          += cy82c693.o
+obj-$(CONFIG_BLK_DEV_DELKIN)            += delkin_cb.o
+obj-$(CONFIG_BLK_DEV_HPT366)            += hpt366.o
+obj-$(CONFIG_BLK_DEV_IT8213)            += it8213.o
+obj-$(CONFIG_BLK_DEV_IT821X)            += it821x.o
+obj-$(CONFIG_BLK_DEV_JMICRON)           += jmicron.o
+obj-$(CONFIG_BLK_DEV_NS87415)           += ns87415.o
+obj-$(CONFIG_BLK_DEV_OPTI621)           += opti621.o
+obj-$(CONFIG_BLK_DEV_PDC202XX_OLD)      += pdc202xx_old.o
+obj-$(CONFIG_BLK_DEV_PDC202XX_NEW)      += pdc202xx_new.o
+obj-$(CONFIG_BLK_DEV_PIIX)              += piix.o
+obj-$(CONFIG_BLK_DEV_RZ1000)            += rz1000.o
+obj-$(CONFIG_BLK_DEV_SVWKS)             += serverworks.o
+obj-$(CONFIG_BLK_DEV_SGIIOC4)           += sgiioc4.o
+obj-$(CONFIG_BLK_DEV_SIIMAGE)           += siimage.o
+obj-$(CONFIG_BLK_DEV_SIS5513)           += sis5513.o
+obj-$(CONFIG_BLK_DEV_SL82C105)          += sl82c105.o
+obj-$(CONFIG_BLK_DEV_SLC90E66)          += slc90e66.o
+obj-$(CONFIG_BLK_DEV_TC86C001)          += tc86c001.o
+obj-$(CONFIG_BLK_DEV_TRIFLEX)           += triflex.o
+obj-$(CONFIG_BLK_DEV_TRM290)            += trm290.o
+obj-$(CONFIG_BLK_DEV_VIA82CXXX)         += via82cxxx.o
+
+# Must appear at the end of the block
+obj-$(CONFIG_BLK_DEV_GENERIC)           += ide-pci-generic.o
+ide-pci-generic-y                       += generic.o
 
 obj-$(CONFIG_IDEPCI_PCIBUS_ORDER)       += ide-scan-pci.o
 
-ifeq ($(CONFIG_BLK_DEV_CMD640), y)
-        cmd640-core-y += pci/cmd640.o
-        obj-y += cmd640-core.o
-endif
+obj-$(CONFIG_BLK_DEV_CMD640)            += cmd640.o
+
+obj-$(CONFIG_BLK_DEV_IDE_PMAC)          += pmac.o
+
+obj-$(CONFIG_IDE_H8300)                 += ide-h8300.o
 
-obj-$(CONFIG_IDE)                       += ppc/
-obj-$(CONFIG_IDE_H8300)                 += h8300/
 obj-$(CONFIG_IDE_GENERIC)               += ide-generic.o
 obj-$(CONFIG_BLK_DEV_IDEPNP)            += ide-pnp.o
 
@@ -58,14 +102,12 @@ obj-$(CONFIG_IDE_GD)			+= ide-gd_mod.o
 obj-$(CONFIG_BLK_DEV_IDECD)             += ide-cd_mod.o
 obj-$(CONFIG_BLK_DEV_IDETAPE)           += ide-tape.o
 
-ifeq ($(CONFIG_BLK_DEV_IDECS), y)
-        ide-cs-core-y += legacy/ide-cs.o
-        obj-y += ide-cs-core.o
-endif
+obj-$(CONFIG_BLK_DEV_IDECS)             += ide-cs.o
 
-ifeq ($(CONFIG_BLK_DEV_PLATFORM), y)
-        ide-platform-core-y += legacy/ide_platform.o
-        obj-y += ide-platform-core.o
-endif
+obj-$(CONFIG_BLK_DEV_PLATFORM)          += ide_platform.o
+
+obj-$(CONFIG_BLK_DEV_IDE_ICSIDE)        += icside.o
+obj-$(CONFIG_BLK_DEV_IDE_RAPIDE)        += rapide.o
+obj-$(CONFIG_BLK_DEV_PALMCHIP_BK3710)   += palm_bk3710.o
 
-obj-$(CONFIG_IDE)                       += arm/ mips/
+obj-$(CONFIG_BLK_DEV_IDE_AU1XXX)        += au1xxx-ide.o
diff --git a/drivers/ide/pci/aec62xx.c b/drivers/ide/aec62xx.c
index 4142c698e0d3..4142c698e0d3 100644
--- a/drivers/ide/pci/aec62xx.c
+++ b/drivers/ide/aec62xx.c
diff --git a/drivers/ide/legacy/ali14xx.c b/drivers/ide/ali14xx.c
index 90da1f953ed0..90da1f953ed0 100644
--- a/drivers/ide/legacy/ali14xx.c
+++ b/drivers/ide/ali14xx.c
diff --git a/drivers/ide/pci/alim15x3.c b/drivers/ide/alim15x3.c
index daf9dce39e52..daf9dce39e52 100644
--- a/drivers/ide/pci/alim15x3.c
+++ b/drivers/ide/alim15x3.c
diff --git a/drivers/ide/pci/amd74xx.c b/drivers/ide/amd74xx.c
index 81ec73134eda..81ec73134eda 100644
--- a/drivers/ide/pci/amd74xx.c
+++ b/drivers/ide/amd74xx.c
diff --git a/drivers/ide/arm/Makefile b/drivers/ide/arm/Makefile
deleted file mode 100644
index 5bc26053afa6..000000000000
--- a/drivers/ide/arm/Makefile
+++ /dev/null
@@ -1,10 +0,0 @@
-
-obj-$(CONFIG_BLK_DEV_IDE_ICSIDE)        += icside.o
-obj-$(CONFIG_BLK_DEV_IDE_RAPIDE)        += rapide.o
-obj-$(CONFIG_BLK_DEV_PALMCHIP_BK3710)   += palm_bk3710.o
-
-ifeq ($(CONFIG_IDE_ARM), m)
-        obj-m += ide_arm.o
-endif
-
-EXTRA_CFLAGS    := -Idrivers/ide
diff --git a/drivers/ide/pci/atiixp.c b/drivers/ide/atiixp.c
index b2735d28f5cc..b2735d28f5cc 100644
--- a/drivers/ide/pci/atiixp.c
+++ b/drivers/ide/atiixp.c
diff --git a/drivers/ide/mips/au1xxx-ide.c b/drivers/ide/au1xxx-ide.c
index 0ec8fd1e4dcb..0ec8fd1e4dcb 100644
--- a/drivers/ide/mips/au1xxx-ide.c
+++ b/drivers/ide/au1xxx-ide.c
diff --git a/drivers/ide/legacy/buddha.c b/drivers/ide/buddha.c
index c5a3c9ef6a5d..c5a3c9ef6a5d 100644
--- a/drivers/ide/legacy/buddha.c
+++ b/drivers/ide/buddha.c
diff --git a/drivers/ide/pci/cmd640.c b/drivers/ide/cmd640.c
index e4306647d00d..e4306647d00d 100644
--- a/drivers/ide/pci/cmd640.c
+++ b/drivers/ide/cmd640.c
diff --git a/drivers/ide/pci/cmd64x.c b/drivers/ide/cmd64x.c
index 935385c77e06..935385c77e06 100644
--- a/drivers/ide/pci/cmd64x.c
+++ b/drivers/ide/cmd64x.c
diff --git a/drivers/ide/pci/cs5520.c b/drivers/ide/cs5520.c
index 5efb467f8fa0..5efb467f8fa0 100644
--- a/drivers/ide/pci/cs5520.c
+++ b/drivers/ide/cs5520.c
diff --git a/drivers/ide/pci/cs5530.c b/drivers/ide/cs5530.c
index 53f079cc00af..53f079cc00af 100644
--- a/drivers/ide/pci/cs5530.c
+++ b/drivers/ide/cs5530.c
diff --git a/drivers/ide/pci/cs5535.c b/drivers/ide/cs5535.c
index 983d957a0189..983d957a0189 100644
--- a/drivers/ide/pci/cs5535.c
+++ b/drivers/ide/cs5535.c
diff --git a/drivers/ide/pci/cy82c693.c b/drivers/ide/cy82c693.c
index 5297f07d2933..5297f07d2933 100644
--- a/drivers/ide/pci/cy82c693.c
+++ b/drivers/ide/cy82c693.c
diff --git a/drivers/ide/pci/delkin_cb.c b/drivers/ide/delkin_cb.c
index 8f1b2d9f0513..8f1b2d9f0513 100644
--- a/drivers/ide/pci/delkin_cb.c
+++ b/drivers/ide/delkin_cb.c
diff --git a/drivers/ide/legacy/dtc2278.c b/drivers/ide/dtc2278.c
index 689b2e493413..689b2e493413 100644
--- a/drivers/ide/legacy/dtc2278.c
+++ b/drivers/ide/dtc2278.c
diff --git a/drivers/ide/legacy/falconide.c b/drivers/ide/falconide.c
index 39d500d84b07..39d500d84b07 100644
--- a/drivers/ide/legacy/falconide.c
+++ b/drivers/ide/falconide.c
diff --git a/drivers/ide/legacy/gayle.c b/drivers/ide/gayle.c
index 691506886561..691506886561 100644
--- a/drivers/ide/legacy/gayle.c
+++ b/drivers/ide/gayle.c
diff --git a/drivers/ide/pci/generic.c b/drivers/ide/generic.c
index 474f96a7c076..474f96a7c076 100644
--- a/drivers/ide/pci/generic.c
+++ b/drivers/ide/generic.c
diff --git a/drivers/ide/h8300/Makefile b/drivers/ide/h8300/Makefile
deleted file mode 100644
index 5eba16f423f4..000000000000
--- a/drivers/ide/h8300/Makefile
+++ /dev/null
@@ -1,2 +0,0 @@
-
-obj-$(CONFIG_IDE_H8300)                 += ide-h8300.o
diff --git a/drivers/ide/pci/hpt366.c b/drivers/ide/hpt366.c
index a7909e9c720e..a7909e9c720e 100644
--- a/drivers/ide/pci/hpt366.c
+++ b/drivers/ide/hpt366.c
diff --git a/drivers/ide/legacy/ht6560b.c b/drivers/ide/ht6560b.c
index c7e5c2246b79..c7e5c2246b79 100644
--- a/drivers/ide/legacy/ht6560b.c
+++ b/drivers/ide/ht6560b.c
diff --git a/drivers/ide/arm/icside.c b/drivers/ide/icside.c
index 76bdc9a27f6f..76bdc9a27f6f 100644
--- a/drivers/ide/arm/icside.c
+++ b/drivers/ide/icside.c
diff --git a/drivers/ide/legacy/ide-4drives.c b/drivers/ide/ide-4drives.c
index 9e85b1ec9607..9e85b1ec9607 100644
--- a/drivers/ide/legacy/ide-4drives.c
+++ b/drivers/ide/ide-4drives.c
diff --git a/drivers/ide/legacy/ide-cs.c b/drivers/ide/ide-cs.c
index cb199c815b53..cb199c815b53 100644
--- a/drivers/ide/legacy/ide-cs.c
+++ b/drivers/ide/ide-cs.c
diff --git a/drivers/ide/h8300/ide-h8300.c b/drivers/ide/ide-h8300.c
index e2cdd2e9cdec..e2cdd2e9cdec 100644
--- a/drivers/ide/h8300/ide-h8300.c
+++ b/drivers/ide/ide-h8300.c
diff --git a/drivers/ide/arm/ide_arm.c b/drivers/ide/ide_arm.c
index f728f2927b5a..f728f2927b5a 100644
--- a/drivers/ide/arm/ide_arm.c
+++ b/drivers/ide/ide_arm.c
diff --git a/drivers/ide/legacy/ide_platform.c b/drivers/ide/ide_platform.c
index 051b4ab0f359..051b4ab0f359 100644
--- a/drivers/ide/legacy/ide_platform.c
+++ b/drivers/ide/ide_platform.c
diff --git a/drivers/ide/pci/it8213.c b/drivers/ide/it8213.c
index 7c2feeb3c5ec..7c2feeb3c5ec 100644
--- a/drivers/ide/pci/it8213.c
+++ b/drivers/ide/it8213.c
diff --git a/drivers/ide/pci/it821x.c b/drivers/ide/it821x.c
index 995e18bb3139..995e18bb3139 100644
--- a/drivers/ide/pci/it821x.c
+++ b/drivers/ide/it821x.c
diff --git a/drivers/ide/pci/jmicron.c b/drivers/ide/jmicron.c
index 9a68433cf46d..9a68433cf46d 100644
--- a/drivers/ide/pci/jmicron.c
+++ b/drivers/ide/jmicron.c
diff --git a/drivers/ide/legacy/Makefile b/drivers/ide/legacy/Makefile
deleted file mode 100644
index 6939329f89e8..000000000000
--- a/drivers/ide/legacy/Makefile
+++ /dev/null
@@ -1,25 +0,0 @@
-
-# link order is important here
-
-obj-$(CONFIG_BLK_DEV_ALI14XX)           += ali14xx.o
-obj-$(CONFIG_BLK_DEV_UMC8672)           += umc8672.o
-obj-$(CONFIG_BLK_DEV_DTC2278)           += dtc2278.o
-obj-$(CONFIG_BLK_DEV_HT6560B)           += ht6560b.o
-obj-$(CONFIG_BLK_DEV_QD65XX)            += qd65xx.o
-obj-$(CONFIG_BLK_DEV_4DRIVES)           += ide-4drives.o
-
-obj-$(CONFIG_BLK_DEV_GAYLE)             += gayle.o
-obj-$(CONFIG_BLK_DEV_FALCON_IDE)        += falconide.o
-obj-$(CONFIG_BLK_DEV_MAC_IDE)           += macide.o
-obj-$(CONFIG_BLK_DEV_Q40IDE)            += q40ide.o
-obj-$(CONFIG_BLK_DEV_BUDDHA)            += buddha.o
-
-ifeq ($(CONFIG_BLK_DEV_IDECS), m)
-        obj-m += ide-cs.o
-endif
-
-ifeq ($(CONFIG_BLK_DEV_PLATFORM), m)
-        obj-m += ide_platform.o
-endif
-
-EXTRA_CFLAGS    := -Idrivers/ide
diff --git a/drivers/ide/legacy/macide.c b/drivers/ide/macide.c
index 43f97cc1d30e..43f97cc1d30e 100644
--- a/drivers/ide/legacy/macide.c
+++ b/drivers/ide/macide.c
diff --git a/drivers/ide/mips/Makefile b/drivers/ide/mips/Makefile
deleted file mode 100644
index 5873fa0b8769..000000000000
--- a/drivers/ide/mips/Makefile
+++ /dev/null
@@ -1,3 +0,0 @@
-obj-$(CONFIG_BLK_DEV_IDE_AU1XXX)        += au1xxx-ide.o
-
-EXTRA_CFLAGS    := -Idrivers/ide
diff --git a/drivers/ide/pci/ns87415.c b/drivers/ide/ns87415.c
index 13789060f407..13789060f407 100644
--- a/drivers/ide/pci/ns87415.c
+++ b/drivers/ide/ns87415.c
diff --git a/drivers/ide/pci/opti621.c b/drivers/ide/opti621.c
index 6048eda3cd61..6048eda3cd61 100644
--- a/drivers/ide/pci/opti621.c
+++ b/drivers/ide/opti621.c
diff --git a/drivers/ide/arm/palm_bk3710.c b/drivers/ide/palm_bk3710.c
index 122ed3c072fd..122ed3c072fd 100644
--- a/drivers/ide/arm/palm_bk3710.c
+++ b/drivers/ide/palm_bk3710.c
diff --git a/drivers/ide/pci/Makefile b/drivers/ide/pci/Makefile
deleted file mode 100644
index ab44a1f5f5a9..000000000000
--- a/drivers/ide/pci/Makefile
+++ /dev/null
@@ -1,43 +0,0 @@
-
-obj-$(CONFIG_BLK_DEV_AEC62XX)           += aec62xx.o
-obj-$(CONFIG_BLK_DEV_ALI15X3)           += alim15x3.o
-obj-$(CONFIG_BLK_DEV_AMD74XX)           += amd74xx.o
-obj-$(CONFIG_BLK_DEV_ATIIXP)            += atiixp.o
-obj-$(CONFIG_BLK_DEV_CELLEB)            += scc_pata.o
-obj-$(CONFIG_BLK_DEV_CMD64X)            += cmd64x.o
-obj-$(CONFIG_BLK_DEV_CS5520)            += cs5520.o
-obj-$(CONFIG_BLK_DEV_CS5530)            += cs5530.o
-obj-$(CONFIG_BLK_DEV_CS5535)            += cs5535.o
-obj-$(CONFIG_BLK_DEV_SC1200)            += sc1200.o
-obj-$(CONFIG_BLK_DEV_CY82C693)          += cy82c693.o
-obj-$(CONFIG_BLK_DEV_DELKIN)            += delkin_cb.o
-obj-$(CONFIG_BLK_DEV_HPT366)            += hpt366.o
-obj-$(CONFIG_BLK_DEV_IT8213)            += it8213.o
-obj-$(CONFIG_BLK_DEV_IT821X)            += it821x.o
-obj-$(CONFIG_BLK_DEV_JMICRON)           += jmicron.o
-obj-$(CONFIG_BLK_DEV_NS87415)           += ns87415.o
-obj-$(CONFIG_BLK_DEV_OPTI621)           += opti621.o
-obj-$(CONFIG_BLK_DEV_PDC202XX_OLD)      += pdc202xx_old.o
-obj-$(CONFIG_BLK_DEV_PDC202XX_NEW)      += pdc202xx_new.o
-obj-$(CONFIG_BLK_DEV_PIIX)              += piix.o
-obj-$(CONFIG_BLK_DEV_RZ1000)            += rz1000.o
-obj-$(CONFIG_BLK_DEV_SVWKS)             += serverworks.o
-obj-$(CONFIG_BLK_DEV_SGIIOC4)           += sgiioc4.o
-obj-$(CONFIG_BLK_DEV_SIIMAGE)           += siimage.o
-obj-$(CONFIG_BLK_DEV_SIS5513)           += sis5513.o
-obj-$(CONFIG_BLK_DEV_SL82C105)          += sl82c105.o
-obj-$(CONFIG_BLK_DEV_SLC90E66)          += slc90e66.o
-obj-$(CONFIG_BLK_DEV_TC86C001)          += tc86c001.o
-obj-$(CONFIG_BLK_DEV_TRIFLEX)           += triflex.o
-obj-$(CONFIG_BLK_DEV_TRM290)            += trm290.o
-obj-$(CONFIG_BLK_DEV_VIA82CXXX)         += via82cxxx.o
-
-# Must appear at the end of the block
-obj-$(CONFIG_BLK_DEV_GENERIC)           += ide-pci-generic.o
-ide-pci-generic-y                       += generic.o
-
-ifeq ($(CONFIG_BLK_DEV_CMD640), m)
-        obj-m += cmd640.o
-endif
-
-EXTRA_CFLAGS    := -Idrivers/ide
diff --git a/drivers/ide/pci/pdc202xx_new.c b/drivers/ide/pdc202xx_new.c
index 211ae46e3e0c..211ae46e3e0c 100644
--- a/drivers/ide/pci/pdc202xx_new.c
+++ b/drivers/ide/pdc202xx_new.c
diff --git a/drivers/ide/pci/pdc202xx_old.c b/drivers/ide/pdc202xx_old.c
index 799557c25eef..799557c25eef 100644
--- a/drivers/ide/pci/pdc202xx_old.c
+++ b/drivers/ide/pdc202xx_old.c
diff --git a/drivers/ide/pci/piix.c b/drivers/ide/piix.c
index d63f9fdca76b..d63f9fdca76b 100644
--- a/drivers/ide/pci/piix.c
+++ b/drivers/ide/piix.c
diff --git a/drivers/ide/ppc/pmac.c b/drivers/ide/pmac.c
index 2e19d6298536..2e19d6298536 100644
--- a/drivers/ide/ppc/pmac.c
+++ b/drivers/ide/pmac.c
diff --git a/drivers/ide/ppc/Makefile b/drivers/ide/ppc/Makefile
deleted file mode 100644
index 74e52adcdf4b..000000000000
--- a/drivers/ide/ppc/Makefile
+++ /dev/null
@@ -1,2 +0,0 @@
-
-obj-$(CONFIG_BLK_DEV_IDE_PMAC)          += pmac.o
diff --git a/drivers/ide/legacy/q40ide.c b/drivers/ide/q40ide.c
index 4af4a8ce4cdf..4af4a8ce4cdf 100644
--- a/drivers/ide/legacy/q40ide.c
+++ b/drivers/ide/q40ide.c
diff --git a/drivers/ide/legacy/qd65xx.c b/drivers/ide/qd65xx.c
index bc27c7aba936..bc27c7aba936 100644
--- a/drivers/ide/legacy/qd65xx.c
+++ b/drivers/ide/qd65xx.c
diff --git a/drivers/ide/legacy/qd65xx.h b/drivers/ide/qd65xx.h
index c83dea85e621..c83dea85e621 100644
--- a/drivers/ide/legacy/qd65xx.h
+++ b/drivers/ide/qd65xx.h
diff --git a/drivers/ide/arm/rapide.c b/drivers/ide/rapide.c
index 78d27d9ae430..78d27d9ae430 100644
--- a/drivers/ide/arm/rapide.c
+++ b/drivers/ide/rapide.c
diff --git a/drivers/ide/pci/rz1000.c b/drivers/ide/rz1000.c
index 7daf0135cbac..7daf0135cbac 100644
--- a/drivers/ide/pci/rz1000.c
+++ b/drivers/ide/rz1000.c
diff --git a/drivers/ide/pci/sc1200.c b/drivers/ide/sc1200.c
index f1a8758e3a99..f1a8758e3a99 100644
--- a/drivers/ide/pci/sc1200.c
+++ b/drivers/ide/sc1200.c
diff --git a/drivers/ide/pci/scc_pata.c b/drivers/ide/scc_pata.c
index 49f163aa51e3..49f163aa51e3 100644
--- a/drivers/ide/pci/scc_pata.c
+++ b/drivers/ide/scc_pata.c
diff --git a/drivers/ide/pci/serverworks.c b/drivers/ide/serverworks.c
index 437bc919dafd..437bc919dafd 100644
--- a/drivers/ide/pci/serverworks.c
+++ b/drivers/ide/serverworks.c
diff --git a/drivers/ide/pci/sgiioc4.c b/drivers/ide/sgiioc4.c
index 8af9b23499fd..8af9b23499fd 100644
--- a/drivers/ide/pci/sgiioc4.c
+++ b/drivers/ide/sgiioc4.c
diff --git a/drivers/ide/pci/siimage.c b/drivers/ide/siimage.c
index eb4faf92c571..eb4faf92c571 100644
--- a/drivers/ide/pci/siimage.c
+++ b/drivers/ide/siimage.c
diff --git a/drivers/ide/pci/sis5513.c b/drivers/ide/sis5513.c
index ad32e18c5ba3..ad32e18c5ba3 100644
--- a/drivers/ide/pci/sis5513.c
+++ b/drivers/ide/sis5513.c
diff --git a/drivers/ide/pci/sl82c105.c b/drivers/ide/sl82c105.c
index 84dc33602ff8..84dc33602ff8 100644
--- a/drivers/ide/pci/sl82c105.c
+++ b/drivers/ide/sl82c105.c
diff --git a/drivers/ide/pci/slc90e66.c b/drivers/ide/slc90e66.c
index 0f759e4ed779..0f759e4ed779 100644
--- a/drivers/ide/pci/slc90e66.c
+++ b/drivers/ide/slc90e66.c
diff --git a/drivers/ide/pci/tc86c001.c b/drivers/ide/tc86c001.c
index 93e2cce4b296..93e2cce4b296 100644
--- a/drivers/ide/pci/tc86c001.c
+++ b/drivers/ide/tc86c001.c
diff --git a/drivers/ide/pci/triflex.c b/drivers/ide/triflex.c
index b6ff40336aa9..b6ff40336aa9 100644
--- a/drivers/ide/pci/triflex.c
+++ b/drivers/ide/triflex.c
diff --git a/drivers/ide/pci/trm290.c b/drivers/ide/trm290.c
index 75ea61526566..75ea61526566 100644
--- a/drivers/ide/pci/trm290.c
+++ b/drivers/ide/trm290.c
diff --git a/drivers/ide/legacy/umc8672.c b/drivers/ide/umc8672.c
index 1da076e0c917..1da076e0c917 100644
--- a/drivers/ide/legacy/umc8672.c
+++ b/drivers/ide/umc8672.c
diff --git a/drivers/ide/pci/via82cxxx.c b/drivers/ide/via82cxxx.c
index 2a812d3207e9..2a812d3207e9 100644
--- a/drivers/ide/pci/via82cxxx.c
+++ b/drivers/ide/via82cxxx.c
diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c
index 49c45feccd5b..5c54fc2350be 100644
--- a/drivers/infiniband/core/mad.c
+++ b/drivers/infiniband/core/mad.c
@@ -406,19 +406,15 @@ static int register_snoop_agent(struct ib_mad_qp_info *qp_info,
 
         if (i == qp_info->snoop_table_size) {
                 /* Grow table. */
-                new_snoop_table = kmalloc(sizeof mad_snoop_priv *
-                                          qp_info->snoop_table_size + 1,
-                                          GFP_ATOMIC);
+                new_snoop_table = krealloc(qp_info->snoop_table,
+                                           sizeof mad_snoop_priv *
+                                           (qp_info->snoop_table_size + 1),
+                                           GFP_ATOMIC);
                 if (!new_snoop_table) {
                         i = -ENOMEM;
                         goto out;
                 }
-                if (qp_info->snoop_table) {
-                        memcpy(new_snoop_table, qp_info->snoop_table,
-                               sizeof mad_snoop_priv *
-                               qp_info->snoop_table_size);
-                        kfree(qp_info->snoop_table);
-                }
+
                 qp_info->snoop_table = new_snoop_table;
                 qp_info->snoop_table_size++;
         }
diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c
index 3ddacf39b7ba..4346a24568fb 100644
--- a/drivers/infiniband/core/ucma.c
+++ b/drivers/infiniband/core/ucma.c
@@ -904,8 +904,8 @@ static ssize_t ucma_join_multicast(struct ucma_file *file,
 
         mutex_lock(&file->mut);
         mc = ucma_alloc_multicast(ctx);
-        if (IS_ERR(mc)) {
-                ret = PTR_ERR(mc);
+        if (!mc) {
+                ret = -ENOMEM;
                 goto err1;
         }
 
diff --git a/drivers/infiniband/hw/cxgb3/iwch_cm.c b/drivers/infiniband/hw/cxgb3/iwch_cm.c
index c325c44807e8..44e936e48a31 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_cm.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_cm.c
@@ -1942,6 +1942,7 @@ fail4:
 fail3:
         cxgb3_free_atid(ep->com.tdev, ep->atid);
 fail2:
+        cm_id->rem_ref(cm_id);
         put_ep(&ep->com);
 out:
         return err;
diff --git a/drivers/infiniband/hw/ehca/ehca_classes.h b/drivers/infiniband/hw/ehca/ehca_classes.h
index 5d7b7855afb9..4df887af66a5 100644
--- a/drivers/infiniband/hw/ehca/ehca_classes.h
+++ b/drivers/infiniband/hw/ehca/ehca_classes.h
@@ -128,6 +128,8 @@ struct ehca_shca {
         /* MR pgsize: bit 0-3 means 4K, 64K, 1M, 16M respectively */
         u32 hca_cap_mr_pgsize;
         int max_mtu;
+        int max_num_qps;
+        int max_num_cqs;
         atomic_t num_cqs;
         atomic_t num_qps;
 };
diff --git a/drivers/infiniband/hw/ehca/ehca_cq.c b/drivers/infiniband/hw/ehca/ehca_cq.c
index 33647a95eb9a..2f4c28a30271 100644
--- a/drivers/infiniband/hw/ehca/ehca_cq.c
+++ b/drivers/infiniband/hw/ehca/ehca_cq.c
@@ -132,9 +132,9 @@ struct ib_cq *ehca_create_cq(struct ib_device *device, int cqe, int comp_vector,
         if (cqe >= 0xFFFFFFFF - 64 - additional_cqe)
                 return ERR_PTR(-EINVAL);
 
-        if (!atomic_add_unless(&shca->num_cqs, 1, ehca_max_cq)) {
+        if (!atomic_add_unless(&shca->num_cqs, 1, shca->max_num_cqs)) {
                 ehca_err(device, "Unable to create CQ, max number of %i "
-                        "CQs reached.", ehca_max_cq);
+                        "CQs reached.", shca->max_num_cqs);
                 ehca_err(device, "To increase the maximum number of CQs "
                         "use the number_of_cqs module parameter.\n");
                 return ERR_PTR(-ENOSPC);
diff --git a/drivers/infiniband/hw/ehca/ehca_main.c b/drivers/infiniband/hw/ehca/ehca_main.c
index 598844d2edc9..bb02a86aa526 100644
--- a/drivers/infiniband/hw/ehca/ehca_main.c
+++ b/drivers/infiniband/hw/ehca/ehca_main.c
@@ -44,6 +44,8 @@
 #include <linux/slab.h>
 #endif
 
+#include <linux/notifier.h>
+#include <linux/memory.h>
 #include "ehca_classes.h"
 #include "ehca_iverbs.h"
 #include "ehca_mrmw.h"
@@ -366,22 +368,23 @@ static int ehca_sense_attributes(struct ehca_shca *shca)
                         shca->hca_cap_mr_pgsize |= pgsize_map[i + 1];
 
         /* Set maximum number of CQs and QPs to calculate EQ size */
-        if (ehca_max_qp == -1)
-                ehca_max_qp = min_t(int, rblock->max_qp, EHCA_MAX_NUM_QUEUES);
-        else if (ehca_max_qp < 1 || ehca_max_qp > rblock->max_qp) {
-                ehca_gen_err("Requested number of QPs is out of range (1 - %i) "
-                        "specified by HW", rblock->max_qp);
-                ret = -EINVAL;
-                goto sense_attributes1;
+        if (shca->max_num_qps == -1)
+                shca->max_num_qps = min_t(int, rblock->max_qp,
+                                          EHCA_MAX_NUM_QUEUES);
+        else if (shca->max_num_qps < 1 || shca->max_num_qps > rblock->max_qp) {
+                ehca_gen_warn("The requested number of QPs is out of range "
+                              "(1 - %i) specified by HW. Value is set to %i",
+                              rblock->max_qp, rblock->max_qp);
+                shca->max_num_qps = rblock->max_qp;
         }
 
-        if (ehca_max_cq == -1)
-                ehca_max_cq = min_t(int, rblock->max_cq, EHCA_MAX_NUM_QUEUES);
-        else if (ehca_max_cq < 1 || ehca_max_cq > rblock->max_cq) {
-                ehca_gen_err("Requested number of CQs is out of range (1 - %i) "
-                        "specified by HW", rblock->max_cq);
-                ret = -EINVAL;
-                goto sense_attributes1;
+        if (shca->max_num_cqs == -1)
+                shca->max_num_cqs = min_t(int, rblock->max_cq,
+                                          EHCA_MAX_NUM_QUEUES);
+        else if (shca->max_num_cqs < 1 || shca->max_num_cqs > rblock->max_cq) {
+                ehca_gen_warn("The requested number of CQs is out of range "
+                              "(1 - %i) specified by HW. Value is set to %i",
+                              rblock->max_cq, rblock->max_cq);
         }
 
         /* query max MTU from first port -- it's the same for all ports */
@@ -733,9 +736,13 @@ static int __devinit ehca_probe(struct of_device *dev,
                 ehca_gen_err("Cannot allocate shca memory.");
                 return -ENOMEM;
         }
+
         mutex_init(&shca->modify_mutex);
         atomic_set(&shca->num_cqs, 0);
         atomic_set(&shca->num_qps, 0);
+        shca->max_num_qps = ehca_max_qp;
+        shca->max_num_cqs = ehca_max_cq;
+
         for (i = 0; i < ARRAY_SIZE(shca->sport); i++)
                 spin_lock_init(&shca->sport[i].mod_sqp_lock);
 
@@ -755,7 +762,7 @@ static int __devinit ehca_probe(struct of_device *dev,
                 goto probe1;
         }
 
-        eq_size = 2 * ehca_max_cq + 4 * ehca_max_qp;
+        eq_size = 2 * shca->max_num_cqs + 4 * shca->max_num_qps;
         /* create event queues */
         ret = ehca_create_eq(shca, &shca->eq, EHCA_EQ, eq_size);
         if (ret) {
@@ -964,6 +971,41 @@ void ehca_poll_eqs(unsigned long data)
         spin_unlock(&shca_list_lock);
 }
 
+static int ehca_mem_notifier(struct notifier_block *nb,
+                             unsigned long action, void *data)
+{
+        static unsigned long ehca_dmem_warn_time;
+
+        switch (action) {
+        case MEM_CANCEL_OFFLINE:
+        case MEM_CANCEL_ONLINE:
+        case MEM_ONLINE:
+        case MEM_OFFLINE:
+                return NOTIFY_OK;
+        case MEM_GOING_ONLINE:
+        case MEM_GOING_OFFLINE:
+                /* only ok if no hca is attached to the lpar */
+                spin_lock(&shca_list_lock);
+                if (list_empty(&shca_list)) {
+                        spin_unlock(&shca_list_lock);
+                        return NOTIFY_OK;
+                } else {
+                        spin_unlock(&shca_list_lock);
+                        if (printk_timed_ratelimit(&ehca_dmem_warn_time,
+                                                   30 * 1000))
+                                ehca_gen_err("DMEM operations are not allowed"
+                                             "as long as an ehca adapter is"
+                                             "attached to the LPAR");
+                        return NOTIFY_BAD;
+                }
+        }
+        return NOTIFY_OK;
+}
+
+static struct notifier_block ehca_mem_nb = {
+        .notifier_call = ehca_mem_notifier,
+};
+
 static int __init ehca_module_init(void)
 {
         int ret;
@@ -991,6 +1033,12 @@ static int __init ehca_module_init(void)
                 goto module_init2;
         }
 
+        ret = register_memory_notifier(&ehca_mem_nb);
+        if (ret) {
+                ehca_gen_err("Failed registering memory add/remove notifier");
+                goto module_init3;
+        }
+
         if (ehca_poll_all_eqs != 1) {
                 ehca_gen_err("WARNING!!!");
                 ehca_gen_err("It is possible to lose interrupts.");
@@ -1003,6 +1051,9 @@ static int __init ehca_module_init(void)
 
         return 0;
 
+module_init3:
+        ibmebus_unregister_driver(&ehca_driver);
+
 module_init2:
         ehca_destroy_slab_caches();
 
@@ -1018,6 +1069,8 @@ static void __exit ehca_module_exit(void)
 
         ibmebus_unregister_driver(&ehca_driver);
 
+        unregister_memory_notifier(&ehca_mem_nb);
+
         ehca_destroy_slab_caches();
 
         ehca_destroy_comp_pool();
diff --git a/drivers/infiniband/hw/ehca/ehca_qp.c b/drivers/infiniband/hw/ehca/ehca_qp.c
index 4dbe2870e014..4d54b9f64567 100644
--- a/drivers/infiniband/hw/ehca/ehca_qp.c
+++ b/drivers/infiniband/hw/ehca/ehca_qp.c
@@ -465,9 +465,9 @@ static struct ehca_qp *internal_create_qp(
         u32 swqe_size = 0, rwqe_size = 0, ib_qp_num;
         unsigned long flags;
 
-        if (!atomic_add_unless(&shca->num_qps, 1, ehca_max_qp)) {
+        if (!atomic_add_unless(&shca->num_qps, 1, shca->max_num_qps)) {
                 ehca_err(pd->device, "Unable to create QP, max number of %i "
-                         "QPs reached.", ehca_max_qp);
+                         "QPs reached.", shca->max_num_qps);
                 ehca_err(pd->device, "To increase the maximum number of QPs "
                          "use the number_of_qps module parameter.\n");
                 return ERR_PTR(-ENOSPC);
@@ -502,6 +502,12 @@ static struct ehca_qp *internal_create_qp(
         if (init_attr->srq) {
                 my_srq = container_of(init_attr->srq, struct ehca_qp, ib_srq);
 
+                if (qp_type == IB_QPT_UC) {
+                        ehca_err(pd->device, "UC with SRQ not supported");
+                        atomic_dec(&shca->num_qps);
+                        return ERR_PTR(-EINVAL);
+                }
+
                 has_srq = 1;
                 parms.ext_type = EQPT_SRQBASE;
                 parms.srq_qpn = my_srq->real_qp_num;
diff --git a/drivers/infiniband/hw/mlx4/mad.c b/drivers/infiniband/hw/mlx4/mad.c
index cdca3a511e1c..606f1e2ef284 100644
--- a/drivers/infiniband/hw/mlx4/mad.c
+++ b/drivers/infiniband/hw/mlx4/mad.c
@@ -298,7 +298,7 @@ int mlx4_ib_mad_init(struct mlx4_ib_dev *dev)
         int p, q;
         int ret;
 
-        for (p = 0; p < dev->dev->caps.num_ports; ++p)
+        for (p = 0; p < dev->num_ports; ++p)
                 for (q = 0; q <= 1; ++q) {
                         agent = ib_register_mad_agent(&dev->ib_dev, p + 1,
                                                       q ? IB_QPT_GSI : IB_QPT_SMI,
@@ -314,7 +314,7 @@ int mlx4_ib_mad_init(struct mlx4_ib_dev *dev)
         return 0;
 
 err:
-        for (p = 0; p < dev->dev->caps.num_ports; ++p)
+        for (p = 0; p < dev->num_ports; ++p)
                 for (q = 0; q <= 1; ++q)
                         if (dev->send_agent[p][q])
                                 ib_unregister_mad_agent(dev->send_agent[p][q]);
@@ -327,7 +327,7 @@ void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev)
         struct ib_mad_agent *agent;
         int p, q;
 
-        for (p = 0; p < dev->dev->caps.num_ports; ++p) {
+        for (p = 0; p < dev->num_ports; ++p) {
                 for (q = 0; q <= 1; ++q) {
                         agent = dev->send_agent[p][q];
                         dev->send_agent[p][q] = NULL;
diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
index a3c2851c0545..2e80f8f47b02 100644
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -574,7 +574,10 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
         ibdev->ib_dev.owner             = THIS_MODULE;
         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
         ibdev->ib_dev.local_dma_lkey    = dev->caps.reserved_lkey;
-        ibdev->ib_dev.phys_port_cnt     = dev->caps.num_ports;
+        ibdev->num_ports = 0;
+        mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
+                ibdev->num_ports++;
+        ibdev->ib_dev.phys_port_cnt     = ibdev->num_ports;
         ibdev->ib_dev.num_comp_vectors  = 1;
         ibdev->ib_dev.dma_device        = &dev->pdev->dev;
 
@@ -691,7 +694,7 @@ static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
         struct mlx4_ib_dev *ibdev = ibdev_ptr;
         int p;
 
-        for (p = 1; p <= dev->caps.num_ports; ++p)
+        for (p = 1; p <= ibdev->num_ports; ++p)
                 mlx4_CLOSE_PORT(dev, p);
 
         mlx4_ib_mad_cleanup(ibdev);
@@ -706,6 +709,10 @@ static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
                           enum mlx4_dev_event event, int port)
 {
         struct ib_event ibev;
+        struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
+
+        if (port > ibdev->num_ports)
+                return;
 
         switch (event) {
         case MLX4_DEV_EVENT_PORT_UP:
diff --git a/drivers/infiniband/hw/mlx4/mlx4_ib.h b/drivers/infiniband/hw/mlx4/mlx4_ib.h
index 6e2b0dc21b61..9974e886b8de 100644
--- a/drivers/infiniband/hw/mlx4/mlx4_ib.h
+++ b/drivers/infiniband/hw/mlx4/mlx4_ib.h
@@ -162,6 +162,7 @@ struct mlx4_ib_ah {
 struct mlx4_ib_dev {
         struct ib_device        ib_dev;
         struct mlx4_dev        *dev;
+        int                     num_ports;
         void __iomem           *uar_map;
 
         struct mlx4_uar         priv_uar;
diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c
index baa01deb2436..39167a797f99 100644
--- a/drivers/infiniband/hw/mlx4/qp.c
+++ b/drivers/infiniband/hw/mlx4/qp.c
@@ -451,6 +451,7 @@ static int create_qp_common(struct mlx4_ib_dev *dev, struct ib_pd *pd,
                             struct ib_qp_init_attr *init_attr,
                             struct ib_udata *udata, int sqpn, struct mlx4_ib_qp *qp)
 {
+        int qpn;
         int err;
 
         mutex_init(&qp->mutex);
@@ -545,9 +546,17 @@ static int create_qp_common(struct mlx4_ib_dev *dev, struct ib_pd *pd,
                 }
         }
 
-        err = mlx4_qp_alloc(dev->dev, sqpn, &qp->mqp);
+        if (sqpn) {
+                qpn = sqpn;
+        } else {
+                err = mlx4_qp_reserve_range(dev->dev, 1, 1, &qpn);
+                if (err)
+                        goto err_wrid;
+        }
+
+        err = mlx4_qp_alloc(dev->dev, qpn, &qp->mqp);
         if (err)
-                goto err_wrid;
+                goto err_qpn;
 
         /*
          * Hardware wants QPN written in big-endian order (after
@@ -560,6 +569,10 @@ static int create_qp_common(struct mlx4_ib_dev *dev, struct ib_pd *pd,
 
         return 0;
 
+err_qpn:
+        if (!sqpn)
+                mlx4_qp_release_range(dev->dev, qpn, 1);
+
 err_wrid:
         if (pd->uobject) {
                 if (!init_attr->srq)
@@ -655,6 +668,10 @@ static void destroy_qp_common(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp,
         mlx4_ib_unlock_cqs(send_cq, recv_cq);
 
         mlx4_qp_free(dev->dev, &qp->mqp);
+
+        if (!is_sqp(dev, qp))
+                mlx4_qp_release_range(dev->dev, qp->mqp.qpn, 1);
+
         mlx4_mtt_cleanup(dev->dev, &qp->mtt);
 
         if (is_user) {
diff --git a/drivers/infiniband/ulp/ipoib/ipoib.h b/drivers/infiniband/ulp/ipoib/ipoib.h
index 68ba5c3482e4..e0c7dfabf2b4 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib.h
+++ b/drivers/infiniband/ulp/ipoib/ipoib.h
@@ -507,6 +507,7 @@ int ipoib_pkey_dev_delay_open(struct net_device *dev);
 void ipoib_drain_cq(struct net_device *dev);
 
 void ipoib_set_ethtool_ops(struct net_device *dev);
+int ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca);
 
 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c b/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c
index 66af5c1a76e5..e9795f60e5d6 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c
@@ -42,6 +42,13 @@ static void ipoib_get_drvinfo(struct net_device *netdev,
         strncpy(drvinfo->driver, "ipoib", sizeof(drvinfo->driver) - 1);
 }
 
+static u32 ipoib_get_rx_csum(struct net_device *dev)
+{
+        struct ipoib_dev_priv *priv = netdev_priv(dev);
+        return test_bit(IPOIB_FLAG_CSUM, &priv->flags) &&
+                !test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
+}
+
 static int ipoib_get_coalesce(struct net_device *dev,
                               struct ethtool_coalesce *coal)
 {
@@ -129,7 +136,7 @@ static void ipoib_get_ethtool_stats(struct net_device *dev,
 
 static const struct ethtool_ops ipoib_ethtool_ops = {
         .get_drvinfo            = ipoib_get_drvinfo,
-        .get_tso                = ethtool_op_get_tso,
+        .get_rx_csum            = ipoib_get_rx_csum,
         .get_coalesce           = ipoib_get_coalesce,
         .set_coalesce           = ipoib_set_coalesce,
         .get_flags              = ethtool_op_get_flags,
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ib.c b/drivers/infiniband/ulp/ipoib/ipoib_ib.c
index 0e748aeeae99..28eb6f03c588 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_ib.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_ib.c
@@ -685,10 +685,6 @@ int ipoib_ib_dev_open(struct net_device *dev)
         queue_delayed_work(ipoib_workqueue, &priv->ah_reap_task,
                            round_jiffies_relative(HZ));
 
-        init_timer(&priv->poll_timer);
-        priv->poll_timer.function = ipoib_ib_tx_timer_func;
-        priv->poll_timer.data = (unsigned long)dev;
-
         set_bit(IPOIB_FLAG_INITIALIZED, &priv->flags);
 
         return 0;
@@ -906,6 +902,9 @@ int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port)
                 return -ENODEV;
         }
 
+        setup_timer(&priv->poll_timer, ipoib_ib_tx_timer_func,
+                    (unsigned long) dev);
+
         if (dev->flags & IFF_UP) {
                 if (ipoib_ib_dev_open(dev)) {
                         ipoib_transport_dev_cleanup(dev);
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index c0ee514396df..fddded7900d1 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -1173,11 +1173,48 @@ int ipoib_add_pkey_attr(struct net_device *dev)
         return device_create_file(&dev->dev, &dev_attr_pkey);
 }
 
+int ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca)
+{
+        struct ib_device_attr *device_attr;
+        int result = -ENOMEM;
+
+        device_attr = kmalloc(sizeof *device_attr, GFP_KERNEL);
+        if (!device_attr) {
+                printk(KERN_WARNING "%s: allocation of %zu bytes failed\n",
+                       hca->name, sizeof *device_attr);
+                return result;
+        }
+
+        result = ib_query_device(hca, device_attr);
+        if (result) {
+                printk(KERN_WARNING "%s: ib_query_device failed (ret = %d)\n",
+                       hca->name, result);
+                kfree(device_attr);
+                return result;
+        }
+        priv->hca_caps = device_attr->device_cap_flags;
+
+        kfree(device_attr);
+
+        if (priv->hca_caps & IB_DEVICE_UD_IP_CSUM) {
+                set_bit(IPOIB_FLAG_CSUM, &priv->flags);
+                priv->dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
+        }
+
+        if (lro)
+                priv->dev->features |= NETIF_F_LRO;
+
+        if (priv->dev->features & NETIF_F_SG && priv->hca_caps & IB_DEVICE_UD_TSO)
+                priv->dev->features |= NETIF_F_TSO;
+
+        return 0;
+}
+
+
 static struct net_device *ipoib_add_port(const char *format,
                                          struct ib_device *hca, u8 port)
 {
         struct ipoib_dev_priv *priv;
-        struct ib_device_attr *device_attr;
         struct ib_port_attr attr;
         int result = -ENOMEM;
 
@@ -1206,31 +1243,8 @@ static struct net_device *ipoib_add_port(const char *format,
                 goto device_init_failed;
         }
 
-        device_attr = kmalloc(sizeof *device_attr, GFP_KERNEL);
-        if (!device_attr) {
-                printk(KERN_WARNING "%s: allocation of %zu bytes failed\n",
-                       hca->name, sizeof *device_attr);
+        if (ipoib_set_dev_features(priv, hca))
                 goto device_init_failed;
-        }
-
-        result = ib_query_device(hca, device_attr);
-        if (result) {
-                printk(KERN_WARNING "%s: ib_query_device failed (ret = %d)\n",
-                       hca->name, result);
-                kfree(device_attr);
-                goto device_init_failed;
-        }
-        priv->hca_caps = device_attr->device_cap_flags;
-
-        kfree(device_attr);
-
-        if (priv->hca_caps & IB_DEVICE_UD_IP_CSUM) {
-                set_bit(IPOIB_FLAG_CSUM, &priv->flags);
-                priv->dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
-        }
-
-        if (lro)
-                priv->dev->features |= NETIF_F_LRO;
 
         /*
          * Set the full membership bit, so that we join the right
@@ -1266,9 +1280,6 @@ static struct net_device *ipoib_add_port(const char *format,
                 goto event_failed;
         }
 
-        if (priv->dev->features & NETIF_F_SG && priv->hca_caps & IB_DEVICE_UD_TSO)
-                priv->dev->features |= NETIF_F_TSO;
-
         result = register_netdev(priv->dev);
         if (result) {
                 printk(KERN_WARNING "%s: couldn't register ipoib port %d; error %d\n",
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_vlan.c b/drivers/infiniband/ulp/ipoib/ipoib_vlan.c
index b08eb56196d3..2cf1a4088718 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_vlan.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_vlan.c
@@ -93,6 +93,10 @@ int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey)
         priv->mcast_mtu  = priv->admin_mtu = priv->dev->mtu;
         set_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags);
 
+        result = ipoib_set_dev_features(priv, ppriv->ca);
+        if (result)
+                goto device_init_failed;
+
         priv->pkey = pkey;
 
         memcpy(priv->dev->dev_addr, ppriv->dev->dev_addr, INFINIBAND_ALEN);
diff --git a/drivers/md/Makefile b/drivers/md/Makefile
index f1ef33dfd8cf..1c615804ea76 100644
--- a/drivers/md/Makefile
+++ b/drivers/md/Makefile
@@ -34,7 +34,7 @@ obj-$(CONFIG_DM_CRYPT)		+= dm-crypt.o
 obj-$(CONFIG_DM_DELAY)          += dm-delay.o
 obj-$(CONFIG_DM_MULTIPATH)      += dm-multipath.o dm-round-robin.o
 obj-$(CONFIG_DM_SNAPSHOT)       += dm-snapshot.o
-obj-$(CONFIG_DM_MIRROR)         += dm-mirror.o dm-log.o
+obj-$(CONFIG_DM_MIRROR)         += dm-mirror.o dm-log.o dm-region-hash.o
 obj-$(CONFIG_DM_ZERO)           += dm-zero.o
 
 quiet_cmd_unroll = UNROLL  $@
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 682ef9e6acd3..ce26c84af064 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -23,7 +23,7 @@
 #include <asm/page.h>
 #include <asm/unaligned.h>
 
-#include "dm.h"
+#include <linux/device-mapper.h>
 
 #define DM_MSG_PREFIX "crypt"
 #define MESG_STR(x) x, sizeof(x)
@@ -56,6 +56,7 @@ struct dm_crypt_io {
         atomic_t pending;
         int error;
         sector_t sector;
+        struct dm_crypt_io *base_io;
 };
 
 struct dm_crypt_request {
@@ -93,7 +94,6 @@ struct crypt_config {
 
         struct workqueue_struct *io_queue;
         struct workqueue_struct *crypt_queue;
-        wait_queue_head_t writeq;
 
         /*
          * crypto related data
@@ -534,6 +534,7 @@ static struct dm_crypt_io *crypt_io_alloc(struct dm_target *ti,
         io->base_bio = bio;
         io->sector = sector;
         io->error = 0;
+        io->base_io = NULL;
         atomic_set(&io->pending, 0);
 
         return io;
@@ -547,6 +548,7 @@ static void crypt_inc_pending(struct dm_crypt_io *io)
 /*
  * One of the bios was finished. Check for completion of
  * the whole request and correctly clean up the buffer.
+ * If base_io is set, wait for the last fragment to complete.
  */
 static void crypt_dec_pending(struct dm_crypt_io *io)
 {
@@ -555,7 +557,14 @@ static void crypt_dec_pending(struct dm_crypt_io *io)
         if (!atomic_dec_and_test(&io->pending))
                 return;
 
-        bio_endio(io->base_bio, io->error);
+        if (likely(!io->base_io))
+                bio_endio(io->base_bio, io->error);
+        else {
+                if (io->error && !io->base_io->error)
+                        io->base_io->error = io->error;
+                crypt_dec_pending(io->base_io);
+        }
+
         mempool_free(io, cc->io_pool);
 }
 
@@ -646,10 +655,7 @@ static void kcryptd_io_read(struct dm_crypt_io *io)
 static void kcryptd_io_write(struct dm_crypt_io *io)
 {
         struct bio *clone = io->ctx.bio_out;
-        struct crypt_config *cc = io->target->private;
-
         generic_make_request(clone);
-        wake_up(&cc->writeq);
 }
 
 static void kcryptd_io(struct work_struct *work)
@@ -688,7 +694,6 @@ static void kcryptd_crypt_write_io_submit(struct dm_crypt_io *io,
         BUG_ON(io->ctx.idx_out < clone->bi_vcnt);
 
         clone->bi_sector = cc->start + io->sector;
-        io->sector += bio_sectors(clone);
 
         if (async)
                 kcryptd_queue_io(io);
@@ -700,16 +705,18 @@ static void kcryptd_crypt_write_convert(struct dm_crypt_io *io)
 {
         struct crypt_config *cc = io->target->private;
         struct bio *clone;
+        struct dm_crypt_io *new_io;
         int crypt_finished;
         unsigned out_of_pages = 0;
         unsigned remaining = io->base_bio->bi_size;
+        sector_t sector = io->sector;
         int r;
 
         /*
          * Prevent io from disappearing until this function completes.
          */
         crypt_inc_pending(io);
-        crypt_convert_init(cc, &io->ctx, NULL, io->base_bio, io->sector);
+        crypt_convert_init(cc, &io->ctx, NULL, io->base_bio, sector);
 
         /*
          * The allocated buffers can be smaller than the whole bio,
@@ -726,6 +733,7 @@ static void kcryptd_crypt_write_convert(struct dm_crypt_io *io)
                 io->ctx.idx_out = 0;
 
                 remaining -= clone->bi_size;
+                sector += bio_sectors(clone);
 
                 crypt_inc_pending(io);
                 r = crypt_convert(cc, &io->ctx);
@@ -741,6 +749,8 @@ static void kcryptd_crypt_write_convert(struct dm_crypt_io *io)
                          */
                         if (unlikely(r < 0))
                                 break;
+
+                        io->sector = sector;
                 }
 
                 /*
@@ -750,8 +760,33 @@ static void kcryptd_crypt_write_convert(struct dm_crypt_io *io)
                 if (unlikely(out_of_pages))
                         congestion_wait(WRITE, HZ/100);
 
-                if (unlikely(remaining))
-                        wait_event(cc->writeq, !atomic_read(&io->ctx.pending));
+                /*
+                 * With async crypto it is unsafe to share the crypto context
+                 * between fragments, so switch to a new dm_crypt_io structure.
+                 */
+                if (unlikely(!crypt_finished && remaining)) {
+                        new_io = crypt_io_alloc(io->target, io->base_bio,
+                                                sector);
+                        crypt_inc_pending(new_io);
+                        crypt_convert_init(cc, &new_io->ctx, NULL,
+                                           io->base_bio, sector);
+                        new_io->ctx.idx_in = io->ctx.idx_in;
+                        new_io->ctx.offset_in = io->ctx.offset_in;
+
+                        /*
+                         * Fragments after the first use the base_io
+                         * pending count.
+                         */
+                        if (!io->base_io)
+                                new_io->base_io = io;
+                        else {
+                                new_io->base_io = io->base_io;
+                                crypt_inc_pending(io->base_io);
+                                crypt_dec_pending(io);
+                        }
+
+                        io = new_io;
+                }
         }
 
         crypt_dec_pending(io);
@@ -1078,7 +1113,6 @@ static int crypt_ctr(struct dm_target *ti, unsigned int argc, char **argv)
                 goto bad_crypt_queue;
         }
 
-        init_waitqueue_head(&cc->writeq);
         ti->private = cc;
         return 0;
 
diff --git a/drivers/md/dm-delay.c b/drivers/md/dm-delay.c
index bdd37f881c42..848b381f1173 100644
--- a/drivers/md/dm-delay.c
+++ b/drivers/md/dm-delay.c
@@ -13,7 +13,8 @@
 #include <linux/bio.h>
 #include <linux/slab.h>
 
-#include "dm.h"
+#include <linux/device-mapper.h>
+
 #include "dm-bio-list.h"
 
 #define DM_MSG_PREFIX "delay"
diff --git a/drivers/md/dm-exception-store.c b/drivers/md/dm-exception-store.c
index 769ab677f8e0..01590f3e0009 100644
--- a/drivers/md/dm-exception-store.c
+++ b/drivers/md/dm-exception-store.c
@@ -7,7 +7,6 @@
  * This file is released under the GPL.
  */
 
-#include "dm.h"
 #include "dm-snap.h"
 
 #include <linux/mm.h>
@@ -105,6 +104,11 @@ struct pstore {
         void *area;
 
         /*
+         * An area of zeros used to clear the next area.
+         */
+        void *zero_area;
+
+        /*
          * Used to keep track of which metadata area the data in
          * 'chunk' refers to.
          */
@@ -149,6 +153,13 @@ static int alloc_area(struct pstore *ps)
         if (!ps->area)
                 return r;
 
+        ps->zero_area = vmalloc(len);
+        if (!ps->zero_area) {
+                vfree(ps->area);
+                return r;
+        }
+        memset(ps->zero_area, 0, len);
+
         return 0;
 }
 
@@ -156,6 +167,8 @@ static void free_area(struct pstore *ps)
 {
         vfree(ps->area);
         ps->area = NULL;
+        vfree(ps->zero_area);
+        ps->zero_area = NULL;
 }
 
 struct mdata_req {
@@ -220,25 +233,41 @@ static chunk_t area_location(struct pstore *ps, chunk_t area)
  * Read or write a metadata area.  Remembering to skip the first
  * chunk which holds the header.
  */
-static int area_io(struct pstore *ps, chunk_t area, int rw)
+static int area_io(struct pstore *ps, int rw)
 {
         int r;
         chunk_t chunk;
 
-        chunk = area_location(ps, area);
+        chunk = area_location(ps, ps->current_area);
 
         r = chunk_io(ps, chunk, rw, 0);
         if (r)
                 return r;
 
-        ps->current_area = area;
         return 0;
 }
 
-static int zero_area(struct pstore *ps, chunk_t area)
+static void zero_memory_area(struct pstore *ps)
 {
         memset(ps->area, 0, ps->snap->chunk_size << SECTOR_SHIFT);
-        return area_io(ps, area, WRITE);
+}
+
+static int zero_disk_area(struct pstore *ps, chunk_t area)
+{
+        struct dm_io_region where = {
+                .bdev = ps->snap->cow->bdev,
+                .sector = ps->snap->chunk_size * area_location(ps, area),
+                .count = ps->snap->chunk_size,
+        };
+        struct dm_io_request io_req = {
+                .bi_rw = WRITE,
+                .mem.type = DM_IO_VMA,
+                .mem.ptr.vma = ps->zero_area,
+                .client = ps->io_client,
+                .notify.fn = NULL,
+        };
+
+        return dm_io(&io_req, 1, &where, NULL);
 }
 
 static int read_header(struct pstore *ps, int *new_snapshot)
@@ -411,15 +440,14 @@ static int insert_exceptions(struct pstore *ps, int *full)
 
 static int read_exceptions(struct pstore *ps)
 {
-        chunk_t area;
         int r, full = 1;
 
         /*
          * Keeping reading chunks and inserting exceptions until
          * we find a partially full area.
          */
-        for (area = 0; full; area++) {
-                r = area_io(ps, area, READ);
+        for (ps->current_area = 0; full; ps->current_area++) {
+                r = area_io(ps, READ);
                 if (r)
                         return r;
 
@@ -428,6 +456,8 @@ static int read_exceptions(struct pstore *ps)
                         return r;
         }
 
+        ps->current_area--;
+
         return 0;
 }
 
@@ -486,12 +516,13 @@ static int persistent_read_metadata(struct exception_store *store)
                         return r;
                 }
 
-                r = zero_area(ps, 0);
+                ps->current_area = 0;
+                zero_memory_area(ps);
+                r = zero_disk_area(ps, 0);
                 if (r) {
-                        DMWARN("zero_area(0) failed");
+                        DMWARN("zero_disk_area(0) failed");
                         return r;
                 }
-
         } else {
                 /*
                  * Sanity checks.
@@ -551,7 +582,6 @@ static void persistent_commit(struct exception_store *store,
                               void (*callback) (void *, int success),
                               void *callback_context)
 {
-        int r;
         unsigned int i;
         struct pstore *ps = get_info(store);
         struct disk_exception de;
@@ -572,33 +602,41 @@ static void persistent_commit(struct exception_store *store,
         cb->context = callback_context;
 
         /*
-         * If there are no more exceptions in flight, or we have
-         * filled this metadata area we commit the exceptions to
-         * disk.
+         * If there are exceptions in flight and we have not yet
+         * filled this metadata area there's nothing more to do.
          */
-        if (atomic_dec_and_test(&ps->pending_count) ||
-            (ps->current_committed == ps->exceptions_per_area)) {
-                r = area_io(ps, ps->current_area, WRITE);
-                if (r)
-                        ps->valid = 0;
+        if (!atomic_dec_and_test(&ps->pending_count) &&
+            (ps->current_committed != ps->exceptions_per_area))
+                return;
 
-                /*
-                 * Have we completely filled the current area ?
-                 */
-                if (ps->current_committed == ps->exceptions_per_area) {
-                        ps->current_committed = 0;
-                        r = zero_area(ps, ps->current_area + 1);
-                        if (r)
-                                ps->valid = 0;
-                }
+        /*
+         * If we completely filled the current area, then wipe the next one.
+         */
+        if ((ps->current_committed == ps->exceptions_per_area) &&
+             zero_disk_area(ps, ps->current_area + 1))
+                ps->valid = 0;
 
-                for (i = 0; i < ps->callback_count; i++) {
-                        cb = ps->callbacks + i;
-                        cb->callback(cb->context, r == 0 ? 1 : 0);
-                }
+        /*
+         * Commit exceptions to disk.
+         */
+        if (ps->valid && area_io(ps, WRITE))
+                ps->valid = 0;
 
-                ps->callback_count = 0;
+        /*
+         * Advance to the next area if this one is full.
+         */
+        if (ps->current_committed == ps->exceptions_per_area) {
+                ps->current_committed = 0;
+                ps->current_area++;
+                zero_memory_area(ps);
         }
+
+        for (i = 0; i < ps->callback_count; i++) {
+                cb = ps->callbacks + i;
+                cb->callback(cb->context, ps->valid);
+        }
+
+        ps->callback_count = 0;
 }
 
 static void persistent_drop(struct exception_store *store)
diff --git a/drivers/md/dm-io.c b/drivers/md/dm-io.c
index 4789c42d9a3a..2fd6d4450637 100644
--- a/drivers/md/dm-io.c
+++ b/drivers/md/dm-io.c
@@ -5,7 +5,7 @@
  * This file is released under the GPL.
  */
 
-#include "dm.h"
+#include <linux/device-mapper.h>
 
 #include <linux/bio.h>
 #include <linux/mempool.h>
diff --git a/drivers/md/dm-kcopyd.c b/drivers/md/dm-kcopyd.c
index 996802b8a452..3073618269ea 100644
--- a/drivers/md/dm-kcopyd.c
+++ b/drivers/md/dm-kcopyd.c
@@ -22,6 +22,7 @@
 #include <linux/vmalloc.h>
 #include <linux/workqueue.h>
 #include <linux/mutex.h>
+#include <linux/device-mapper.h>
 #include <linux/dm-kcopyd.h>
 
 #include "dm.h"
@@ -268,6 +269,17 @@ static void push(struct list_head *jobs, struct kcopyd_job *job)
         spin_unlock_irqrestore(&kc->job_lock, flags);
 }
 
+
+static void push_head(struct list_head *jobs, struct kcopyd_job *job)
+{
+        unsigned long flags;
+        struct dm_kcopyd_client *kc = job->kc;
+
+        spin_lock_irqsave(&kc->job_lock, flags);
+        list_add(&job->list, jobs);
+        spin_unlock_irqrestore(&kc->job_lock, flags);
+}
+
 /*
  * These three functions process 1 item from the corresponding
  * job list.
@@ -398,7 +410,7 @@ static int process_jobs(struct list_head *jobs, struct dm_kcopyd_client *kc,
                          * We couldn't service this job ATM, so
                          * push this job back onto the list.
                          */
-                        push(jobs, job);
+                        push_head(jobs, job);
                         break;
                 }
 
diff --git a/drivers/md/dm-linear.c b/drivers/md/dm-linear.c
index 6449bcdf84ca..1b29e9136758 100644
--- a/drivers/md/dm-linear.c
+++ b/drivers/md/dm-linear.c
@@ -5,12 +5,12 @@
  */
 
 #include "dm.h"
-
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/blkdev.h>
 #include <linux/bio.h>
 #include <linux/slab.h>
+#include <linux/device-mapper.h>
 
 #define DM_MSG_PREFIX "linear"
 
diff --git a/drivers/md/dm-log.c b/drivers/md/dm-log.c
index 5b48478c79f5..a8c0fc79ca78 100644
--- a/drivers/md/dm-log.c
+++ b/drivers/md/dm-log.c
@@ -12,7 +12,7 @@
 #include <linux/dm-io.h>
 #include <linux/dm-dirty-log.h>
 
-#include "dm.h"
+#include <linux/device-mapper.h>
 
 #define DM_MSG_PREFIX "dirty region log"
 
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index 9bf3460c5540..abf6e8cfaedb 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -5,7 +5,8 @@
  * This file is released under the GPL.
  */
 
-#include "dm.h"
+#include <linux/device-mapper.h>
+
 #include "dm-path-selector.h"
 #include "dm-bio-list.h"
 #include "dm-bio-record.h"
diff --git a/drivers/md/dm-path-selector.c b/drivers/md/dm-path-selector.c
index ca1bb636a3e4..96ea226155b1 100644
--- a/drivers/md/dm-path-selector.c
+++ b/drivers/md/dm-path-selector.c
@@ -9,7 +9,8 @@
  * Path selector registration.
  */
 
-#include "dm.h"
+#include <linux/device-mapper.h>
+
 #include "dm-path-selector.h"
 
 #include <linux/slab.h>
diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
index 29913e42c4ab..92dcc06832a4 100644
--- a/drivers/md/dm-raid1.c
+++ b/drivers/md/dm-raid1.c
@@ -1,30 +1,30 @@
 /*
  * Copyright (C) 2003 Sistina Software Limited.
+ * Copyright (C) 2005-2008 Red Hat, Inc. All rights reserved.
  *
  * This file is released under the GPL.
  */
 
-#include "dm.h"
 #include "dm-bio-list.h"
 #include "dm-bio-record.h"
 
-#include <linux/ctype.h>
 #include <linux/init.h>
 #include <linux/mempool.h>
 #include <linux/module.h>
 #include <linux/pagemap.h>
 #include <linux/slab.h>
-#include <linux/time.h>
-#include <linux/vmalloc.h>
 #include <linux/workqueue.h>
-#include <linux/log2.h>
-#include <linux/hardirq.h>
+#include <linux/device-mapper.h>
 #include <linux/dm-io.h>
 #include <linux/dm-dirty-log.h>
 #include <linux/dm-kcopyd.h>
+#include <linux/dm-region-hash.h>
 
 #define DM_MSG_PREFIX "raid1"
+
+#define MAX_RECOVERY 1  /* Maximum number of regions recovered in parallel. */
 #define DM_IO_PAGES 64
+#define DM_KCOPYD_PAGES 64
 
 #define DM_RAID1_HANDLE_ERRORS 0x01
 #define errors_handled(p)       ((p)->features & DM_RAID1_HANDLE_ERRORS)
@@ -32,87 +32,6 @@
 static DECLARE_WAIT_QUEUE_HEAD(_kmirrord_recovery_stopped);
 
 /*-----------------------------------------------------------------
- * Region hash
- *
- * The mirror splits itself up into discrete regions.  Each
- * region can be in one of three states: clean, dirty,
- * nosync.  There is no need to put clean regions in the hash.
- *
- * In addition to being present in the hash table a region _may_
- * be present on one of three lists.
- *
- *   clean_regions: Regions on this list have no io pending to
- *   them, they are in sync, we are no longer interested in them,
- *   they are dull.  rh_update_states() will remove them from the
- *   hash table.
- *
- *   quiesced_regions: These regions have been spun down, ready
- *   for recovery.  rh_recovery_start() will remove regions from
- *   this list and hand them to kmirrord, which will schedule the
- *   recovery io with kcopyd.
- *
- *   recovered_regions: Regions that kcopyd has successfully
- *   recovered.  rh_update_states() will now schedule any delayed
- *   io, up the recovery_count, and remove the region from the
- *   hash.
- *
- * There are 2 locks:
- *   A rw spin lock 'hash_lock' protects just the hash table,
- *   this is never held in write mode from interrupt context,
- *   which I believe means that we only have to disable irqs when
- *   doing a write lock.
- *
- *   An ordinary spin lock 'region_lock' that protects the three
- *   lists in the region_hash, with the 'state', 'list' and
- *   'bhs_delayed' fields of the regions.  This is used from irq
- *   context, so all other uses will have to suspend local irqs.
- *---------------------------------------------------------------*/
-struct mirror_set;
-struct region_hash {
-        struct mirror_set *ms;
-        uint32_t region_size;
-        unsigned region_shift;
-
-        /* holds persistent region state */
-        struct dm_dirty_log *log;
-
-        /* hash table */
-        rwlock_t hash_lock;
-        mempool_t *region_pool;
-        unsigned int mask;
-        unsigned int nr_buckets;
-        struct list_head *buckets;
-
-        spinlock_t region_lock;
-        atomic_t recovery_in_flight;
-        struct semaphore recovery_count;
-        struct list_head clean_regions;
-        struct list_head quiesced_regions;
-        struct list_head recovered_regions;
-        struct list_head failed_recovered_regions;
-};
-
-enum {
-        RH_CLEAN,
-        RH_DIRTY,
-        RH_NOSYNC,
-        RH_RECOVERING
-};
-
-struct region {
-        struct region_hash *rh; /* FIXME: can we get rid of this ? */
-        region_t key;
-        int state;
-
-        struct list_head hash_list;
-        struct list_head list;
-
-        atomic_t pending;
-        struct bio_list delayed_bios;
-};
-
-
-/*-----------------------------------------------------------------
  * Mirror set structures.
  *---------------------------------------------------------------*/
 enum dm_raid1_error {
@@ -132,8 +51,7 @@ struct mirror {
 struct mirror_set {
         struct dm_target *ti;
         struct list_head list;
-        struct region_hash rh;
-        struct dm_kcopyd_client *kcopyd_client;
+
         uint64_t features;
 
         spinlock_t lock;        /* protects the lists */
@@ -141,6 +59,8 @@ struct mirror_set {
         struct bio_list writes;
         struct bio_list failures;
 
+        struct dm_region_hash *rh;
+        struct dm_kcopyd_client *kcopyd_client;
         struct dm_io_client *io_client;
         mempool_t *read_record_pool;
 
@@ -159,25 +79,14 @@ struct mirror_set {
 
         struct work_struct trigger_event;
 
-        unsigned int nr_mirrors;
+        unsigned nr_mirrors;
         struct mirror mirror[0];
 };
 
-/*
- * Conversion fns
- */
-static inline region_t bio_to_region(struct region_hash *rh, struct bio *bio)
-{
-        return (bio->bi_sector - rh->ms->ti->begin) >> rh->region_shift;
-}
-
-static inline sector_t region_to_sector(struct region_hash *rh, region_t region)
+static void wakeup_mirrord(void *context)
 {
-        return region << rh->region_shift;
-}
+        struct mirror_set *ms = context;
 
-static void wake(struct mirror_set *ms)
-{
         queue_work(ms->kmirrord_wq, &ms->kmirrord_work);
 }
 
@@ -186,7 +95,7 @@ static void delayed_wake_fn(unsigned long data)
         struct mirror_set *ms = (struct mirror_set *) data;
 
         clear_bit(0, &ms->timer_pending);
-        wake(ms);
+        wakeup_mirrord(ms);
 }
 
 static void delayed_wake(struct mirror_set *ms)
@@ -200,473 +109,34 @@ static void delayed_wake(struct mirror_set *ms)
         add_timer(&ms->timer);
 }
 
-/* FIXME move this */
-static void queue_bio(struct mirror_set *ms, struct bio *bio, int rw);
-
-#define MIN_REGIONS 64
-#define MAX_RECOVERY 1
-static int rh_init(struct region_hash *rh, struct mirror_set *ms,
-                   struct dm_dirty_log *log, uint32_t region_size,
-                   region_t nr_regions)
+static void wakeup_all_recovery_waiters(void *context)
 {
-        unsigned int nr_buckets, max_buckets;
-        size_t i;
-
-        /*
-         * Calculate a suitable number of buckets for our hash
-         * table.
-         */
-        max_buckets = nr_regions >> 6;
-        for (nr_buckets = 128u; nr_buckets < max_buckets; nr_buckets <<= 1)
-                ;
-        nr_buckets >>= 1;
-
-        rh->ms = ms;
-        rh->log = log;
-        rh->region_size = region_size;
-        rh->region_shift = ffs(region_size) - 1;
-        rwlock_init(&rh->hash_lock);
-        rh->mask = nr_buckets - 1;
-        rh->nr_buckets = nr_buckets;
-
-        rh->buckets = vmalloc(nr_buckets * sizeof(*rh->buckets));
-        if (!rh->buckets) {
-                DMERR("unable to allocate region hash memory");
-                return -ENOMEM;
-        }
-
-        for (i = 0; i < nr_buckets; i++)
-                INIT_LIST_HEAD(rh->buckets + i);
-
-        spin_lock_init(&rh->region_lock);
-        sema_init(&rh->recovery_count, 0);
-        atomic_set(&rh->recovery_in_flight, 0);
-        INIT_LIST_HEAD(&rh->clean_regions);
-        INIT_LIST_HEAD(&rh->quiesced_regions);
-        INIT_LIST_HEAD(&rh->recovered_regions);
-        INIT_LIST_HEAD(&rh->failed_recovered_regions);
-
-        rh->region_pool = mempool_create_kmalloc_pool(MIN_REGIONS,
-                                                      sizeof(struct region));
-        if (!rh->region_pool) {
-                vfree(rh->buckets);
-                rh->buckets = NULL;
-                return -ENOMEM;
-        }
-
-        return 0;
+        wake_up_all(&_kmirrord_recovery_stopped);
 }
 
-static void rh_exit(struct region_hash *rh)
-{
-        unsigned int h;
-        struct region *reg, *nreg;
-
-        BUG_ON(!list_empty(&rh->quiesced_regions));
-        for (h = 0; h < rh->nr_buckets; h++) {
-                list_for_each_entry_safe(reg, nreg, rh->buckets + h, hash_list) {
-                        BUG_ON(atomic_read(&reg->pending));
-                        mempool_free(reg, rh->region_pool);
-                }
-        }
-
-        if (rh->log)
-                dm_dirty_log_destroy(rh->log);
-        if (rh->region_pool)
-                mempool_destroy(rh->region_pool);
-        vfree(rh->buckets);
-}
-
-#define RH_HASH_MULT 2654435387U
-
-static inline unsigned int rh_hash(struct region_hash *rh, region_t region)
-{
-        return (unsigned int) ((region * RH_HASH_MULT) >> 12) & rh->mask;
-}
-
-static struct region *__rh_lookup(struct region_hash *rh, region_t region)
-{
-        struct region *reg;
-
-        list_for_each_entry (reg, rh->buckets + rh_hash(rh, region), hash_list)
-                if (reg->key == region)
-                        return reg;
-
-        return NULL;
-}
-
-static void __rh_insert(struct region_hash *rh, struct region *reg)
-{
-        unsigned int h = rh_hash(rh, reg->key);
-        list_add(&reg->hash_list, rh->buckets + h);
-}
-
-static struct region *__rh_alloc(struct region_hash *rh, region_t region)
-{
-        struct region *reg, *nreg;
-
-        read_unlock(&rh->hash_lock);
-        nreg = mempool_alloc(rh->region_pool, GFP_ATOMIC);
-        if (unlikely(!nreg))
-                nreg = kmalloc(sizeof(struct region), GFP_NOIO);
-        nreg->state = rh->log->type->in_sync(rh->log, region, 1) ?
-                RH_CLEAN : RH_NOSYNC;
-        nreg->rh = rh;
-        nreg->key = region;
-
-        INIT_LIST_HEAD(&nreg->list);
-
-        atomic_set(&nreg->pending, 0);
-        bio_list_init(&nreg->delayed_bios);
-        write_lock_irq(&rh->hash_lock);
-
-        reg = __rh_lookup(rh, region);
-        if (reg)
-                /* we lost the race */
-                mempool_free(nreg, rh->region_pool);
-
-        else {
-                __rh_insert(rh, nreg);
-                if (nreg->state == RH_CLEAN) {
-                        spin_lock(&rh->region_lock);
-                        list_add(&nreg->list, &rh->clean_regions);
-                        spin_unlock(&rh->region_lock);
-                }
-                reg = nreg;
-        }
-        write_unlock_irq(&rh->hash_lock);
-        read_lock(&rh->hash_lock);
-
-        return reg;
-}
-
-static inline struct region *__rh_find(struct region_hash *rh, region_t region)
-{
-        struct region *reg;
-
-        reg = __rh_lookup(rh, region);
-        if (!reg)
-                reg = __rh_alloc(rh, region);
-
-        return reg;
-}
-
-static int rh_state(struct region_hash *rh, region_t region, int may_block)
-{
-        int r;
-        struct region *reg;
-
-        read_lock(&rh->hash_lock);
-        reg = __rh_lookup(rh, region);
-        read_unlock(&rh->hash_lock);
-
-        if (reg)
-                return reg->state;
-
-        /*
-         * The region wasn't in the hash, so we fall back to the
-         * dirty log.
-         */
-        r = rh->log->type->in_sync(rh->log, region, may_block);
-
-        /*
-         * Any error from the dirty log (eg. -EWOULDBLOCK) gets
-         * taken as a RH_NOSYNC
-         */
-        return r == 1 ? RH_CLEAN : RH_NOSYNC;
-}
-
-static inline int rh_in_sync(struct region_hash *rh,
-                             region_t region, int may_block)
-{
-        int state = rh_state(rh, region, may_block);
-        return state == RH_CLEAN || state == RH_DIRTY;
-}
-
-static void dispatch_bios(struct mirror_set *ms, struct bio_list *bio_list)
-{
-        struct bio *bio;
-
-        while ((bio = bio_list_pop(bio_list))) {
-                queue_bio(ms, bio, WRITE);
-        }
-}
-
-static void complete_resync_work(struct region *reg, int success)
-{
-        struct region_hash *rh = reg->rh;
-
-        rh->log->type->set_region_sync(rh->log, reg->key, success);
-
-        /*
-         * Dispatch the bios before we call 'wake_up_all'.
-         * This is important because if we are suspending,
-         * we want to know that recovery is complete and
-         * the work queue is flushed.  If we wake_up_all
-         * before we dispatch_bios (queue bios and call wake()),
-         * then we risk suspending before the work queue
-         * has been properly flushed.
-         */
-        dispatch_bios(rh->ms, &reg->delayed_bios);
-        if (atomic_dec_and_test(&rh->recovery_in_flight))
-                wake_up_all(&_kmirrord_recovery_stopped);
-        up(&rh->recovery_count);
-}
-
-static void rh_update_states(struct region_hash *rh)
-{
-        struct region *reg, *next;
-
-        LIST_HEAD(clean);
-        LIST_HEAD(recovered);
-        LIST_HEAD(failed_recovered);
-
-        /*
-         * Quickly grab the lists.
-         */
-        write_lock_irq(&rh->hash_lock);
-        spin_lock(&rh->region_lock);
-        if (!list_empty(&rh->clean_regions)) {
-                list_splice_init(&rh->clean_regions, &clean);
-
-                list_for_each_entry(reg, &clean, list)
-                        list_del(&reg->hash_list);
-        }
-
-        if (!list_empty(&rh->recovered_regions)) {
-                list_splice_init(&rh->recovered_regions, &recovered);
-
-                list_for_each_entry (reg, &recovered, list)
-                        list_del(&reg->hash_list);
-        }
-
-        if (!list_empty(&rh->failed_recovered_regions)) {
-                list_splice_init(&rh->failed_recovered_regions,
-                                 &failed_recovered);
-
-                list_for_each_entry(reg, &failed_recovered, list)
-                        list_del(&reg->hash_list);
-        }
-
-        spin_unlock(&rh->region_lock);
-        write_unlock_irq(&rh->hash_lock);
-
-        /*
-         * All the regions on the recovered and clean lists have
-         * now been pulled out of the system, so no need to do
-         * any more locking.
-         */
-        list_for_each_entry_safe (reg, next, &recovered, list) {
-                rh->log->type->clear_region(rh->log, reg->key);
-                complete_resync_work(reg, 1);
-                mempool_free(reg, rh->region_pool);
-        }
-
-        list_for_each_entry_safe(reg, next, &failed_recovered, list) {
-                complete_resync_work(reg, errors_handled(rh->ms) ? 0 : 1);
-                mempool_free(reg, rh->region_pool);
-        }
-
-        list_for_each_entry_safe(reg, next, &clean, list) {
-                rh->log->type->clear_region(rh->log, reg->key);
-                mempool_free(reg, rh->region_pool);
-        }
-
-        rh->log->type->flush(rh->log);
-}
-
-static void rh_inc(struct region_hash *rh, region_t region)
-{
-        struct region *reg;
-
-        read_lock(&rh->hash_lock);
-        reg = __rh_find(rh, region);
-
-        spin_lock_irq(&rh->region_lock);
-        atomic_inc(&reg->pending);
-
-        if (reg->state == RH_CLEAN) {
-                reg->state = RH_DIRTY;
-                list_del_init(&reg->list);      /* take off the clean list */
-                spin_unlock_irq(&rh->region_lock);
-
-                rh->log->type->mark_region(rh->log, reg->key);
-        } else
-                spin_unlock_irq(&rh->region_lock);
-
-
-        read_unlock(&rh->hash_lock);
-}
-
-static void rh_inc_pending(struct region_hash *rh, struct bio_list *bios)
-{
-        struct bio *bio;
-
-        for (bio = bios->head; bio; bio = bio->bi_next)
-                rh_inc(rh, bio_to_region(rh, bio));
-}
-
-static void rh_dec(struct region_hash *rh, region_t region)
+static void queue_bio(struct mirror_set *ms, struct bio *bio, int rw)
 {
         unsigned long flags;
-        struct region *reg;
         int should_wake = 0;
+        struct bio_list *bl;
 
-        read_lock(&rh->hash_lock);
-        reg = __rh_lookup(rh, region);
-        read_unlock(&rh->hash_lock);
-
-        spin_lock_irqsave(&rh->region_lock, flags);
-        if (atomic_dec_and_test(&reg->pending)) {
-                /*
-                 * There is no pending I/O for this region.
-                 * We can move the region to corresponding list for next action.
-                 * At this point, the region is not yet connected to any list.
-                 *
-                 * If the state is RH_NOSYNC, the region should be kept off
-                 * from clean list.
-                 * The hash entry for RH_NOSYNC will remain in memory
-                 * until the region is recovered or the map is reloaded.
-                 */
-
-                /* do nothing for RH_NOSYNC */
-                if (reg->state == RH_RECOVERING) {
-                        list_add_tail(&reg->list, &rh->quiesced_regions);
-                } else if (reg->state == RH_DIRTY) {
-                        reg->state = RH_CLEAN;
-                        list_add(&reg->list, &rh->clean_regions);
-                }
-                should_wake = 1;
-        }
-        spin_unlock_irqrestore(&rh->region_lock, flags);
+        bl = (rw == WRITE) ? &ms->writes : &ms->reads;
+        spin_lock_irqsave(&ms->lock, flags);
+        should_wake = !(bl->head);
+        bio_list_add(bl, bio);
+        spin_unlock_irqrestore(&ms->lock, flags);
 
         if (should_wake)
-                wake(rh->ms);
-}
-
-/*
- * Starts quiescing a region in preparation for recovery.
- */
-static int __rh_recovery_prepare(struct region_hash *rh)
-{
-        int r;
-        struct region *reg;
-        region_t region;
-
-        /*
-         * Ask the dirty log what's next.
-         */
-        r = rh->log->type->get_resync_work(rh->log, &region);
-        if (r <= 0)
-                return r;
-
-        /*
-         * Get this region, and start it quiescing by setting the
-         * recovering flag.
-         */
-        read_lock(&rh->hash_lock);
-        reg = __rh_find(rh, region);
-        read_unlock(&rh->hash_lock);
-
-        spin_lock_irq(&rh->region_lock);
-        reg->state = RH_RECOVERING;
-
-        /* Already quiesced ? */
-        if (atomic_read(&reg->pending))
-                list_del_init(&reg->list);
-        else
-                list_move(&reg->list, &rh->quiesced_regions);
-
-        spin_unlock_irq(&rh->region_lock);
-
-        return 1;
-}
-
-static void rh_recovery_prepare(struct region_hash *rh)
-{
-        /* Extra reference to avoid race with rh_stop_recovery */
-        atomic_inc(&rh->recovery_in_flight);
-
-        while (!down_trylock(&rh->recovery_count)) {
-                atomic_inc(&rh->recovery_in_flight);
-                if (__rh_recovery_prepare(rh) <= 0) {
-                        atomic_dec(&rh->recovery_in_flight);
-                        up(&rh->recovery_count);
-                        break;
-                }
-        }
-
-        /* Drop the extra reference */
-        if (atomic_dec_and_test(&rh->recovery_in_flight))
-                wake_up_all(&_kmirrord_recovery_stopped);
-}
-
-/*
- * Returns any quiesced regions.
- */
-static struct region *rh_recovery_start(struct region_hash *rh)
-{
-        struct region *reg = NULL;
-
-        spin_lock_irq(&rh->region_lock);
-        if (!list_empty(&rh->quiesced_regions)) {
-                reg = list_entry(rh->quiesced_regions.next,
-                                 struct region, list);
-                list_del_init(&reg->list);      /* remove from the quiesced list */
-        }
-        spin_unlock_irq(&rh->region_lock);
-
-        return reg;
-}
-
-static void rh_recovery_end(struct region *reg, int success)
-{
-        struct region_hash *rh = reg->rh;
-
-        spin_lock_irq(&rh->region_lock);
-        if (success)
-                list_add(&reg->list, &reg->rh->recovered_regions);
-        else {
-                reg->state = RH_NOSYNC;
-                list_add(&reg->list, &reg->rh->failed_recovered_regions);
-        }
-        spin_unlock_irq(&rh->region_lock);
-
-        wake(rh->ms);
+                wakeup_mirrord(ms);
 }
 
-static int rh_flush(struct region_hash *rh)
+static void dispatch_bios(void *context, struct bio_list *bio_list)
 {
-        return rh->log->type->flush(rh->log);
-}
-
-static void rh_delay(struct region_hash *rh, struct bio *bio)
-{
-        struct region *reg;
-
-        read_lock(&rh->hash_lock);
-        reg = __rh_find(rh, bio_to_region(rh, bio));
-        bio_list_add(&reg->delayed_bios, bio);
-        read_unlock(&rh->hash_lock);
-}
-
-static void rh_stop_recovery(struct region_hash *rh)
-{
-        int i;
-
-        /* wait for any recovering regions */
-        for (i = 0; i < MAX_RECOVERY; i++)
-                down(&rh->recovery_count);
-}
-
-static void rh_start_recovery(struct region_hash *rh)
-{
-        int i;
-
-        for (i = 0; i < MAX_RECOVERY; i++)
-                up(&rh->recovery_count);
+        struct mirror_set *ms = context;
+        struct bio *bio;
 
-        wake(rh->ms);
+        while ((bio = bio_list_pop(bio_list)))
+                queue_bio(ms, bio, WRITE);
 }
 
 #define MIN_READ_RECORDS 20
@@ -776,8 +246,8 @@ out:
 static void recovery_complete(int read_err, unsigned long write_err,
                               void *context)
 {
-        struct region *reg = (struct region *)context;
-        struct mirror_set *ms = reg->rh->ms;
+        struct dm_region *reg = context;
+        struct mirror_set *ms = dm_rh_region_context(reg);
         int m, bit = 0;
 
         if (read_err) {
@@ -803,31 +273,33 @@ static void recovery_complete(int read_err, unsigned long write_err,
                 }
         }
 
-        rh_recovery_end(reg, !(read_err || write_err));
+        dm_rh_recovery_end(reg, !(read_err || write_err));
 }
 
-static int recover(struct mirror_set *ms, struct region *reg)
+static int recover(struct mirror_set *ms, struct dm_region *reg)
 {
         int r;
-        unsigned int i;
+        unsigned i;
         struct dm_io_region from, to[DM_KCOPYD_MAX_REGIONS], *dest;
         struct mirror *m;
         unsigned long flags = 0;
+        region_t key = dm_rh_get_region_key(reg);
+        sector_t region_size = dm_rh_get_region_size(ms->rh);
 
         /* fill in the source */
         m = get_default_mirror(ms);
         from.bdev = m->dev->bdev;
-        from.sector = m->offset + region_to_sector(reg->rh, reg->key);
-        if (reg->key == (ms->nr_regions - 1)) {
+        from.sector = m->offset + dm_rh_region_to_sector(ms->rh, key);
+        if (key == (ms->nr_regions - 1)) {
                 /*
                  * The final region may be smaller than
                  * region_size.
                  */
-                from.count = ms->ti->len & (reg->rh->region_size - 1);
+                from.count = ms->ti->len & (region_size - 1);
                 if (!from.count)
-                        from.count = reg->rh->region_size;
+                        from.count = region_size;
         } else
-                from.count = reg->rh->region_size;
+                from.count = region_size;
 
         /* fill in the destinations */
         for (i = 0, dest = to; i < ms->nr_mirrors; i++) {
@@ -836,7 +308,7 @@ static int recover(struct mirror_set *ms, struct region *reg)
 
                 m = ms->mirror + i;
                 dest->bdev = m->dev->bdev;
-                dest->sector = m->offset + region_to_sector(reg->rh, reg->key);
+                dest->sector = m->offset + dm_rh_region_to_sector(ms->rh, key);
                 dest->count = from.count;
                 dest++;
         }
@@ -853,22 +325,22 @@ static int recover(struct mirror_set *ms, struct region *reg)
 
 static void do_recovery(struct mirror_set *ms)
 {
+        struct dm_region *reg;
+        struct dm_dirty_log *log = dm_rh_dirty_log(ms->rh);
         int r;
-        struct region *reg;
-        struct dm_dirty_log *log = ms->rh.log;
 
         /*
          * Start quiescing some regions.
          */
-        rh_recovery_prepare(&ms->rh);
+        dm_rh_recovery_prepare(ms->rh);
 
         /*
          * Copy any already quiesced regions.
          */
-        while ((reg = rh_recovery_start(&ms->rh))) {
+        while ((reg = dm_rh_recovery_start(ms->rh))) {
                 r = recover(ms, reg);
                 if (r)
-                        rh_recovery_end(reg, 0);
+                        dm_rh_recovery_end(reg, 0);
         }
 
         /*
@@ -909,9 +381,10 @@ static int default_ok(struct mirror *m)
 
 static int mirror_available(struct mirror_set *ms, struct bio *bio)
 {
-        region_t region = bio_to_region(&ms->rh, bio);
+        struct dm_dirty_log *log = dm_rh_dirty_log(ms->rh);
+        region_t region = dm_rh_bio_to_region(ms->rh, bio);
 
-        if (ms->rh.log->type->in_sync(ms->rh.log, region, 0))
+        if (log->type->in_sync(log, region, 0))
                 return choose_mirror(ms,  bio->bi_sector) ? 1 : 0;
 
         return 0;
@@ -985,7 +458,14 @@ static void read_async_bio(struct mirror *m, struct bio *bio)
 
         map_region(&io, m, bio);
         bio_set_m(bio, m);
-        (void) dm_io(&io_req, 1, &io, NULL);
+        BUG_ON(dm_io(&io_req, 1, &io, NULL));
+}
+
+static inline int region_in_sync(struct mirror_set *ms, region_t region,
+                                 int may_block)
+{
+        int state = dm_rh_get_state(ms->rh, region, may_block);
+        return state == DM_RH_CLEAN || state == DM_RH_DIRTY;
 }
 
 static void do_reads(struct mirror_set *ms, struct bio_list *reads)
@@ -995,13 +475,13 @@ static void do_reads(struct mirror_set *ms, struct bio_list *reads)
         struct mirror *m;
 
         while ((bio = bio_list_pop(reads))) {
-                region = bio_to_region(&ms->rh, bio);
+                region = dm_rh_bio_to_region(ms->rh, bio);
                 m = get_default_mirror(ms);
 
                 /*
                  * We can only read balance if the region is in sync.
                  */
-                if (likely(rh_in_sync(&ms->rh, region, 1)))
+                if (likely(region_in_sync(ms, region, 1)))
                         m = choose_mirror(ms, bio->bi_sector);
                 else if (m && atomic_read(&m->error_count))
                         m = NULL;
@@ -1024,57 +504,6 @@ static void do_reads(struct mirror_set *ms, struct bio_list *reads)
  * NOSYNC:      increment pending, just write to the default mirror
  *---------------------------------------------------------------*/
 
-/* __bio_mark_nosync
- * @ms
- * @bio
- * @done
- * @error
- *
- * The bio was written on some mirror(s) but failed on other mirror(s).
- * We can successfully endio the bio but should avoid the region being
- * marked clean by setting the state RH_NOSYNC.
- *
- * This function is _not_ safe in interrupt context!
- */
-static void __bio_mark_nosync(struct mirror_set *ms,
-                              struct bio *bio, unsigned done, int error)
-{
-        unsigned long flags;
-        struct region_hash *rh = &ms->rh;
-        struct dm_dirty_log *log = ms->rh.log;
-        struct region *reg;
-        region_t region = bio_to_region(rh, bio);
-        int recovering = 0;
-
-        /* We must inform the log that the sync count has changed. */
-        log->type->set_region_sync(log, region, 0);
-        ms->in_sync = 0;
-
-        read_lock(&rh->hash_lock);
-        reg = __rh_find(rh, region);
-        read_unlock(&rh->hash_lock);
-
-        /* region hash entry should exist because write was in-flight */
-        BUG_ON(!reg);
-        BUG_ON(!list_empty(&reg->list));
-
-        spin_lock_irqsave(&rh->region_lock, flags);
-        /*
-         * Possible cases:
-         *   1) RH_DIRTY
-         *   2) RH_NOSYNC: was dirty, other preceeding writes failed
-         *   3) RH_RECOVERING: flushing pending writes
-         * Either case, the region should have not been connected to list.
-         */
-        recovering = (reg->state == RH_RECOVERING);
-        reg->state = RH_NOSYNC;
-        BUG_ON(!list_empty(&reg->list));
-        spin_unlock_irqrestore(&rh->region_lock, flags);
-
-        bio_endio(bio, error);
-        if (recovering)
-                complete_resync_work(reg, 0);
-}
 
 static void write_callback(unsigned long error, void *context)
 {
@@ -1119,7 +548,7 @@ static void write_callback(unsigned long error, void *context)
                 bio_list_add(&ms->failures, bio);
                 spin_unlock_irqrestore(&ms->lock, flags);
                 if (should_wake)
-                        wake(ms);
+                        wakeup_mirrord(ms);
                 return;
         }
 out:
@@ -1149,7 +578,7 @@ static void do_write(struct mirror_set *ms, struct bio *bio)
          */
         bio_set_m(bio, get_default_mirror(ms));
 
-        (void) dm_io(&io_req, ms->nr_mirrors, io, NULL);
+        BUG_ON(dm_io(&io_req, ms->nr_mirrors, io, NULL));
 }
 
 static void do_writes(struct mirror_set *ms, struct bio_list *writes)
@@ -1169,18 +598,19 @@ static void do_writes(struct mirror_set *ms, struct bio_list *writes)
         bio_list_init(&recover);
 
         while ((bio = bio_list_pop(writes))) {
-                state = rh_state(&ms->rh, bio_to_region(&ms->rh, bio), 1);
+                state = dm_rh_get_state(ms->rh,
+                                        dm_rh_bio_to_region(ms->rh, bio), 1);
                 switch (state) {
-                case RH_CLEAN:
-                case RH_DIRTY:
+                case DM_RH_CLEAN:
+                case DM_RH_DIRTY:
                         this_list = &sync;
                         break;
 
-                case RH_NOSYNC:
+                case DM_RH_NOSYNC:
                         this_list = &nosync;
                         break;
 
-                case RH_RECOVERING:
+                case DM_RH_RECOVERING:
                         this_list = &recover;
                         break;
                 }
@@ -1193,9 +623,9 @@ static void do_writes(struct mirror_set *ms, struct bio_list *writes)
          * be written to (writes to recover regions are going to
          * be delayed).
          */
-        rh_inc_pending(&ms->rh, &sync);
-        rh_inc_pending(&ms->rh, &nosync);
-        ms->log_failure = rh_flush(&ms->rh) ? 1 : 0;
+        dm_rh_inc_pending(ms->rh, &sync);
+        dm_rh_inc_pending(ms->rh, &nosync);
+        ms->log_failure = dm_rh_flush(ms->rh) ? 1 : 0;
 
         /*
          * Dispatch io.
@@ -1204,13 +634,13 @@ static void do_writes(struct mirror_set *ms, struct bio_list *writes)
                 spin_lock_irq(&ms->lock);
                 bio_list_merge(&ms->failures, &sync);
                 spin_unlock_irq(&ms->lock);
-                wake(ms);
+                wakeup_mirrord(ms);
         } else
                 while ((bio = bio_list_pop(&sync)))
                         do_write(ms, bio);
 
         while ((bio = bio_list_pop(&recover)))
-                rh_delay(&ms->rh, bio);
+                dm_rh_delay(ms->rh, bio);
 
         while ((bio = bio_list_pop(&nosync))) {
                 map_bio(get_default_mirror(ms), bio);
@@ -1227,7 +657,8 @@ static void do_failures(struct mirror_set *ms, struct bio_list *failures)
 
         if (!ms->log_failure) {
                 while ((bio = bio_list_pop(failures)))
-                        __bio_mark_nosync(ms, bio, bio->bi_size, 0);
+                        ms->in_sync = 0;
+                        dm_rh_mark_nosync(ms->rh, bio, bio->bi_size, 0);
                 return;
         }
 
@@ -1280,8 +711,8 @@ static void trigger_event(struct work_struct *work)
  *---------------------------------------------------------------*/
 static void do_mirror(struct work_struct *work)
 {
-        struct mirror_set *ms =container_of(work, struct mirror_set,
-                                            kmirrord_work);
+        struct mirror_set *ms = container_of(work, struct mirror_set,
+                                             kmirrord_work);
         struct bio_list reads, writes, failures;
         unsigned long flags;
 
@@ -1294,7 +725,7 @@ static void do_mirror(struct work_struct *work)
         bio_list_init(&ms->failures);
         spin_unlock_irqrestore(&ms->lock, flags);
 
-        rh_update_states(&ms->rh);
+        dm_rh_update_states(ms->rh, errors_handled(ms));
         do_recovery(ms);
         do_reads(ms, &reads);
         do_writes(ms, &writes);
@@ -1303,7 +734,6 @@ static void do_mirror(struct work_struct *work)
         dm_table_unplug_all(ms->ti->table);
 }
 
-
 /*-----------------------------------------------------------------
  * Target functions
  *---------------------------------------------------------------*/
@@ -1315,9 +745,6 @@ static struct mirror_set *alloc_context(unsigned int nr_mirrors,
         size_t len;
         struct mirror_set *ms = NULL;
 
-        if (array_too_big(sizeof(*ms), sizeof(ms->mirror[0]), nr_mirrors))
-                return NULL;
-
         len = sizeof(*ms) + (sizeof(ms->mirror[0]) * nr_mirrors);
 
         ms = kzalloc(len, GFP_KERNEL);
@@ -1353,7 +780,11 @@ static struct mirror_set *alloc_context(unsigned int nr_mirrors,
                 return NULL;
         }
 
-        if (rh_init(&ms->rh, ms, dl, region_size, ms->nr_regions)) {
+        ms->rh = dm_region_hash_create(ms, dispatch_bios, wakeup_mirrord,
+                                       wakeup_all_recovery_waiters,
+                                       ms->ti->begin, MAX_RECOVERY,
+                                       dl, region_size, ms->nr_regions);
+        if (IS_ERR(ms->rh)) {
                 ti->error = "Error creating dirty region hash";
                 dm_io_client_destroy(ms->io_client);
                 mempool_destroy(ms->read_record_pool);
@@ -1371,7 +802,7 @@ static void free_context(struct mirror_set *ms, struct dm_target *ti,
                 dm_put_device(ti, ms->mirror[m].dev);
 
         dm_io_client_destroy(ms->io_client);
-        rh_exit(&ms->rh);
+        dm_region_hash_destroy(ms->rh);
         mempool_destroy(ms->read_record_pool);
         kfree(ms);
 }
@@ -1411,10 +842,10 @@ static int get_mirror(struct mirror_set *ms, struct dm_target *ti,
  * Create dirty log: log_type #log_params <log_params>
  */
 static struct dm_dirty_log *create_dirty_log(struct dm_target *ti,
-                                          unsigned int argc, char **argv,
-                                          unsigned int *args_used)
+                                             unsigned argc, char **argv,
+                                             unsigned *args_used)
 {
-        unsigned int param_count;
+        unsigned param_count;
         struct dm_dirty_log *dl;
 
         if (argc < 2) {
@@ -1545,7 +976,7 @@ static int mirror_ctr(struct dm_target *ti, unsigned int argc, char **argv)
         }
 
         ti->private = ms;
-        ti->split_io = ms->rh.region_size;
+        ti->split_io = dm_rh_get_region_size(ms->rh);
 
         ms->kmirrord_wq = create_singlethread_workqueue("kmirrord");
         if (!ms->kmirrord_wq) {
@@ -1580,11 +1011,11 @@ static int mirror_ctr(struct dm_target *ti, unsigned int argc, char **argv)
                 goto err_destroy_wq;
         }
 
-        r = dm_kcopyd_client_create(DM_IO_PAGES, &ms->kcopyd_client);
+        r = dm_kcopyd_client_create(DM_KCOPYD_PAGES, &ms->kcopyd_client);
         if (r)
                 goto err_destroy_wq;
 
-        wake(ms);
+        wakeup_mirrord(ms);
         return 0;
 
 err_destroy_wq:
@@ -1605,22 +1036,6 @@ static void mirror_dtr(struct dm_target *ti)
         free_context(ms, ti, ms->nr_mirrors);
 }
 
-static void queue_bio(struct mirror_set *ms, struct bio *bio, int rw)
-{
-        unsigned long flags;
-        int should_wake = 0;
-        struct bio_list *bl;
-
-        bl = (rw == WRITE) ? &ms->writes : &ms->reads;
-        spin_lock_irqsave(&ms->lock, flags);
-        should_wake = !(bl->head);
-        bio_list_add(bl, bio);
-        spin_unlock_irqrestore(&ms->lock, flags);
-
-        if (should_wake)
-                wake(ms);
-}
-
 /*
  * Mirror mapping function
  */
@@ -1631,16 +1046,16 @@ static int mirror_map(struct dm_target *ti, struct bio *bio,
         struct mirror *m;
         struct mirror_set *ms = ti->private;
         struct dm_raid1_read_record *read_record = NULL;
+        struct dm_dirty_log *log = dm_rh_dirty_log(ms->rh);
 
         if (rw == WRITE) {
                 /* Save region for mirror_end_io() handler */
-                map_context->ll = bio_to_region(&ms->rh, bio);
+                map_context->ll = dm_rh_bio_to_region(ms->rh, bio);
                 queue_bio(ms, bio, rw);
                 return DM_MAPIO_SUBMITTED;
         }
 
-        r = ms->rh.log->type->in_sync(ms->rh.log,
-                                      bio_to_region(&ms->rh, bio), 0);
+        r = log->type->in_sync(log, dm_rh_bio_to_region(ms->rh, bio), 0);
         if (r < 0 && r != -EWOULDBLOCK)
                 return r;
 
@@ -1688,7 +1103,7 @@ static int mirror_end_io(struct dm_target *ti, struct bio *bio,
          * We need to dec pending if this was a write.
          */
         if (rw == WRITE) {
-                rh_dec(&ms->rh, map_context->ll);
+                dm_rh_dec(ms->rh, map_context->ll);
                 return error;
         }
 
@@ -1744,7 +1159,7 @@ out:
 static void mirror_presuspend(struct dm_target *ti)
 {
         struct mirror_set *ms = (struct mirror_set *) ti->private;
-        struct dm_dirty_log *log = ms->rh.log;
+        struct dm_dirty_log *log = dm_rh_dirty_log(ms->rh);
 
         atomic_set(&ms->suspend, 1);
 
@@ -1752,10 +1167,10 @@ static void mirror_presuspend(struct dm_target *ti)
          * We must finish up all the work that we've
          * generated (i.e. recovery work).
          */
-        rh_stop_recovery(&ms->rh);
+        dm_rh_stop_recovery(ms->rh);
 
         wait_event(_kmirrord_recovery_stopped,
-                   !atomic_read(&ms->rh.recovery_in_flight));
+                   !dm_rh_recovery_in_flight(ms->rh));
 
         if (log->type->presuspend && log->type->presuspend(log))
                 /* FIXME: need better error handling */
@@ -1773,7 +1188,7 @@ static void mirror_presuspend(struct dm_target *ti)
 static void mirror_postsuspend(struct dm_target *ti)
 {
         struct mirror_set *ms = ti->private;
-        struct dm_dirty_log *log = ms->rh.log;
+        struct dm_dirty_log *log = dm_rh_dirty_log(ms->rh);
 
         if (log->type->postsuspend && log->type->postsuspend(log))
                 /* FIXME: need better error handling */
@@ -1783,13 +1198,13 @@ static void mirror_postsuspend(struct dm_target *ti)
 static void mirror_resume(struct dm_target *ti)
 {
         struct mirror_set *ms = ti->private;
-        struct dm_dirty_log *log = ms->rh.log;
+        struct dm_dirty_log *log = dm_rh_dirty_log(ms->rh);
 
         atomic_set(&ms->suspend, 0);
         if (log->type->resume && log->type->resume(log))
                 /* FIXME: need better error handling */
                 DMWARN("log resume failed");
-        rh_start_recovery(&ms->rh);
+        dm_rh_start_recovery(ms->rh);
 }
 
 /*
@@ -1821,7 +1236,7 @@ static int mirror_status(struct dm_target *ti, status_type_t type,
 {
         unsigned int m, sz = 0;
         struct mirror_set *ms = (struct mirror_set *) ti->private;
-        struct dm_dirty_log *log = ms->rh.log;
+        struct dm_dirty_log *log = dm_rh_dirty_log(ms->rh);
         char buffer[ms->nr_mirrors + 1];
 
         switch (type) {
@@ -1834,15 +1249,15 @@ static int mirror_status(struct dm_target *ti, status_type_t type,
                 buffer[m] = '\0';
 
                 DMEMIT("%llu/%llu 1 %s ",
-                      (unsigned long long)log->type->get_sync_count(ms->rh.log),
+                      (unsigned long long)log->type->get_sync_count(log),
                       (unsigned long long)ms->nr_regions, buffer);
 
-                sz += log->type->status(ms->rh.log, type, result+sz, maxlen-sz);
+                sz += log->type->status(log, type, result+sz, maxlen-sz);
 
                 break;
 
         case STATUSTYPE_TABLE:
-                sz = log->type->status(ms->rh.log, type, result, maxlen);
+                sz = log->type->status(log, type, result, maxlen);
 
                 DMEMIT("%d", ms->nr_mirrors);
                 for (m = 0; m < ms->nr_mirrors; m++)
diff --git a/drivers/md/dm-region-hash.c b/drivers/md/dm-region-hash.c
new file mode 100644
index 000000000000..59f8d9df9e1a
--- /dev/null
+++ b/drivers/md/dm-region-hash.c
@@ -0,0 +1,704 @@
+/*
+ * Copyright (C) 2003 Sistina Software Limited.
+ * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
+ *
+ * This file is released under the GPL.
+ */
+
+#include <linux/dm-dirty-log.h>
+#include <linux/dm-region-hash.h>
+
+#include <linux/ctype.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/vmalloc.h>
+
+#include "dm.h"
+#include "dm-bio-list.h"
+
+#define DM_MSG_PREFIX   "region hash"
+
+/*-----------------------------------------------------------------
+ * Region hash
+ *
+ * The mirror splits itself up into discrete regions.  Each
+ * region can be in one of three states: clean, dirty,
+ * nosync.  There is no need to put clean regions in the hash.
+ *
+ * In addition to being present in the hash table a region _may_
+ * be present on one of three lists.
+ *
+ *   clean_regions: Regions on this list have no io pending to
+ *   them, they are in sync, we are no longer interested in them,
+ *   they are dull.  dm_rh_update_states() will remove them from the
+ *   hash table.
+ *
+ *   quiesced_regions: These regions have been spun down, ready
+ *   for recovery.  rh_recovery_start() will remove regions from
+ *   this list and hand them to kmirrord, which will schedule the
+ *   recovery io with kcopyd.
+ *
+ *   recovered_regions: Regions that kcopyd has successfully
+ *   recovered.  dm_rh_update_states() will now schedule any delayed
+ *   io, up the recovery_count, and remove the region from the
+ *   hash.
+ *
+ * There are 2 locks:
+ *   A rw spin lock 'hash_lock' protects just the hash table,
+ *   this is never held in write mode from interrupt context,
+ *   which I believe means that we only have to disable irqs when
+ *   doing a write lock.
+ *
+ *   An ordinary spin lock 'region_lock' that protects the three
+ *   lists in the region_hash, with the 'state', 'list' and
+ *   'delayed_bios' fields of the regions.  This is used from irq
+ *   context, so all other uses will have to suspend local irqs.
+ *---------------------------------------------------------------*/
+struct dm_region_hash {
+        uint32_t region_size;
+        unsigned region_shift;
+
+        /* holds persistent region state */
+        struct dm_dirty_log *log;
+
+        /* hash table */
+        rwlock_t hash_lock;
+        mempool_t *region_pool;
+        unsigned mask;
+        unsigned nr_buckets;
+        unsigned prime;
+        unsigned shift;
+        struct list_head *buckets;
+
+        unsigned max_recovery; /* Max # of regions to recover in parallel */
+
+        spinlock_t region_lock;
+        atomic_t recovery_in_flight;
+        struct semaphore recovery_count;
+        struct list_head clean_regions;
+        struct list_head quiesced_regions;
+        struct list_head recovered_regions;
+        struct list_head failed_recovered_regions;
+
+        void *context;
+        sector_t target_begin;
+
+        /* Callback function to schedule bios writes */
+        void (*dispatch_bios)(void *context, struct bio_list *bios);
+
+        /* Callback function to wakeup callers worker thread. */
+        void (*wakeup_workers)(void *context);
+
+        /* Callback function to wakeup callers recovery waiters. */
+        void (*wakeup_all_recovery_waiters)(void *context);
+};
+
+struct dm_region {
+        struct dm_region_hash *rh;      /* FIXME: can we get rid of this ? */
+        region_t key;
+        int state;
+
+        struct list_head hash_list;
+        struct list_head list;
+
+        atomic_t pending;
+        struct bio_list delayed_bios;
+};
+
+/*
+ * Conversion fns
+ */
+static region_t dm_rh_sector_to_region(struct dm_region_hash *rh, sector_t sector)
+{
+        return sector >> rh->region_shift;
+}
+
+sector_t dm_rh_region_to_sector(struct dm_region_hash *rh, region_t region)
+{
+        return region << rh->region_shift;
+}
+EXPORT_SYMBOL_GPL(dm_rh_region_to_sector);
+
+region_t dm_rh_bio_to_region(struct dm_region_hash *rh, struct bio *bio)
+{
+        return dm_rh_sector_to_region(rh, bio->bi_sector - rh->target_begin);
+}
+EXPORT_SYMBOL_GPL(dm_rh_bio_to_region);
+
+void *dm_rh_region_context(struct dm_region *reg)
+{
+        return reg->rh->context;
+}
+EXPORT_SYMBOL_GPL(dm_rh_region_context);
+
+region_t dm_rh_get_region_key(struct dm_region *reg)
+{
+        return reg->key;
+}
+EXPORT_SYMBOL_GPL(dm_rh_get_region_key);
+
+sector_t dm_rh_get_region_size(struct dm_region_hash *rh)
+{
+        return rh->region_size;
+}
+EXPORT_SYMBOL_GPL(dm_rh_get_region_size);
+
+/*
+ * FIXME: shall we pass in a structure instead of all these args to
+ * dm_region_hash_create()????
+ */
+#define RH_HASH_MULT 2654435387U
+#define RH_HASH_SHIFT 12
+
+#define MIN_REGIONS 64
+struct dm_region_hash *dm_region_hash_create(
+                void *context, void (*dispatch_bios)(void *context,
+                                                     struct bio_list *bios),
+                void (*wakeup_workers)(void *context),
+                void (*wakeup_all_recovery_waiters)(void *context),
+                sector_t target_begin, unsigned max_recovery,
+                struct dm_dirty_log *log, uint32_t region_size,
+                region_t nr_regions)
+{
+        struct dm_region_hash *rh;
+        unsigned nr_buckets, max_buckets;
+        size_t i;
+
+        /*
+         * Calculate a suitable number of buckets for our hash
+         * table.
+         */
+        max_buckets = nr_regions >> 6;
+        for (nr_buckets = 128u; nr_buckets < max_buckets; nr_buckets <<= 1)
+                ;
+        nr_buckets >>= 1;
+
+        rh = kmalloc(sizeof(*rh), GFP_KERNEL);
+        if (!rh) {
+                DMERR("unable to allocate region hash memory");
+                return ERR_PTR(-ENOMEM);
+        }
+
+        rh->context = context;
+        rh->dispatch_bios = dispatch_bios;
+        rh->wakeup_workers = wakeup_workers;
+        rh->wakeup_all_recovery_waiters = wakeup_all_recovery_waiters;
+        rh->target_begin = target_begin;
+        rh->max_recovery = max_recovery;
+        rh->log = log;
+        rh->region_size = region_size;
+        rh->region_shift = ffs(region_size) - 1;
+        rwlock_init(&rh->hash_lock);
+        rh->mask = nr_buckets - 1;
+        rh->nr_buckets = nr_buckets;
+
+        rh->shift = RH_HASH_SHIFT;
+        rh->prime = RH_HASH_MULT;
+
+        rh->buckets = vmalloc(nr_buckets * sizeof(*rh->buckets));
+        if (!rh->buckets) {
+                DMERR("unable to allocate region hash bucket memory");
+                kfree(rh);
+                return ERR_PTR(-ENOMEM);
+        }
+
+        for (i = 0; i < nr_buckets; i++)
+                INIT_LIST_HEAD(rh->buckets + i);
+
+        spin_lock_init(&rh->region_lock);
+        sema_init(&rh->recovery_count, 0);
+        atomic_set(&rh->recovery_in_flight, 0);
+        INIT_LIST_HEAD(&rh->clean_regions);
+        INIT_LIST_HEAD(&rh->quiesced_regions);
+        INIT_LIST_HEAD(&rh->recovered_regions);
+        INIT_LIST_HEAD(&rh->failed_recovered_regions);
+
+        rh->region_pool = mempool_create_kmalloc_pool(MIN_REGIONS,
+                                                      sizeof(struct dm_region));
+        if (!rh->region_pool) {
+                vfree(rh->buckets);
+                kfree(rh);
+                rh = ERR_PTR(-ENOMEM);
+        }
+
+        return rh;
+}
+EXPORT_SYMBOL_GPL(dm_region_hash_create);
+
+void dm_region_hash_destroy(struct dm_region_hash *rh)
+{
+        unsigned h;
+        struct dm_region *reg, *nreg;
+
+        BUG_ON(!list_empty(&rh->quiesced_regions));
+        for (h = 0; h < rh->nr_buckets; h++) {
+                list_for_each_entry_safe(reg, nreg, rh->buckets + h,
+                                         hash_list) {
+                        BUG_ON(atomic_read(&reg->pending));
+                        mempool_free(reg, rh->region_pool);
+                }
+        }
+
+        if (rh->log)
+                dm_dirty_log_destroy(rh->log);
+
+        if (rh->region_pool)
+                mempool_destroy(rh->region_pool);
+
+        vfree(rh->buckets);
+        kfree(rh);
+}
+EXPORT_SYMBOL_GPL(dm_region_hash_destroy);
+
+struct dm_dirty_log *dm_rh_dirty_log(struct dm_region_hash *rh)
+{
+        return rh->log;
+}
+EXPORT_SYMBOL_GPL(dm_rh_dirty_log);
+
+static unsigned rh_hash(struct dm_region_hash *rh, region_t region)
+{
+        return (unsigned) ((region * rh->prime) >> rh->shift) & rh->mask;
+}
+
+static struct dm_region *__rh_lookup(struct dm_region_hash *rh, region_t region)
+{
+        struct dm_region *reg;
+        struct list_head *bucket = rh->buckets + rh_hash(rh, region);
+
+        list_for_each_entry(reg, bucket, hash_list)
+                if (reg->key == region)
+                        return reg;
+
+        return NULL;
+}
+
+static void __rh_insert(struct dm_region_hash *rh, struct dm_region *reg)
+{
+        list_add(&reg->hash_list, rh->buckets + rh_hash(rh, reg->key));
+}
+
+static struct dm_region *__rh_alloc(struct dm_region_hash *rh, region_t region)
+{
+        struct dm_region *reg, *nreg;
+
+        nreg = mempool_alloc(rh->region_pool, GFP_ATOMIC);
+        if (unlikely(!nreg))
+                nreg = kmalloc(sizeof(*nreg), GFP_NOIO);
+
+        nreg->state = rh->log->type->in_sync(rh->log, region, 1) ?
+                      DM_RH_CLEAN : DM_RH_NOSYNC;
+        nreg->rh = rh;
+        nreg->key = region;
+        INIT_LIST_HEAD(&nreg->list);
+        atomic_set(&nreg->pending, 0);
+        bio_list_init(&nreg->delayed_bios);
+
+        write_lock_irq(&rh->hash_lock);
+        reg = __rh_lookup(rh, region);
+        if (reg)
+                /* We lost the race. */
+                mempool_free(nreg, rh->region_pool);
+        else {
+                __rh_insert(rh, nreg);
+                if (nreg->state == DM_RH_CLEAN) {
+                        spin_lock(&rh->region_lock);
+                        list_add(&nreg->list, &rh->clean_regions);
+                        spin_unlock(&rh->region_lock);
+                }
+
+                reg = nreg;
+        }
+        write_unlock_irq(&rh->hash_lock);
+
+        return reg;
+}
+
+static struct dm_region *__rh_find(struct dm_region_hash *rh, region_t region)
+{
+        struct dm_region *reg;
+
+        reg = __rh_lookup(rh, region);
+        if (!reg) {
+                read_unlock(&rh->hash_lock);
+                reg = __rh_alloc(rh, region);
+                read_lock(&rh->hash_lock);
+        }
+
+        return reg;
+}
+
+int dm_rh_get_state(struct dm_region_hash *rh, region_t region, int may_block)
+{
+        int r;
+        struct dm_region *reg;
+
+        read_lock(&rh->hash_lock);
+        reg = __rh_lookup(rh, region);
+        read_unlock(&rh->hash_lock);
+
+        if (reg)
+                return reg->state;
+
+        /*
+         * The region wasn't in the hash, so we fall back to the
+         * dirty log.
+         */
+        r = rh->log->type->in_sync(rh->log, region, may_block);
+
+        /*
+         * Any error from the dirty log (eg. -EWOULDBLOCK) gets
+         * taken as a DM_RH_NOSYNC
+         */
+        return r == 1 ? DM_RH_CLEAN : DM_RH_NOSYNC;
+}
+EXPORT_SYMBOL_GPL(dm_rh_get_state);
+
+static void complete_resync_work(struct dm_region *reg, int success)
+{
+        struct dm_region_hash *rh = reg->rh;
+
+        rh->log->type->set_region_sync(rh->log, reg->key, success);
+
+        /*
+         * Dispatch the bios before we call 'wake_up_all'.
+         * This is important because if we are suspending,
+         * we want to know that recovery is complete and
+         * the work queue is flushed.  If we wake_up_all
+         * before we dispatch_bios (queue bios and call wake()),
+         * then we risk suspending before the work queue
+         * has been properly flushed.
+         */
+        rh->dispatch_bios(rh->context, &reg->delayed_bios);
+        if (atomic_dec_and_test(&rh->recovery_in_flight))
+                rh->wakeup_all_recovery_waiters(rh->context);
+        up(&rh->recovery_count);
+}
+
+/* dm_rh_mark_nosync
+ * @ms
+ * @bio
+ * @done
+ * @error
+ *
+ * The bio was written on some mirror(s) but failed on other mirror(s).
+ * We can successfully endio the bio but should avoid the region being
+ * marked clean by setting the state DM_RH_NOSYNC.
+ *
+ * This function is _not_ safe in interrupt context!
+ */
+void dm_rh_mark_nosync(struct dm_region_hash *rh,
+                       struct bio *bio, unsigned done, int error)
+{
+        unsigned long flags;
+        struct dm_dirty_log *log = rh->log;
+        struct dm_region *reg;
+        region_t region = dm_rh_bio_to_region(rh, bio);
+        int recovering = 0;
+
+        /* We must inform the log that the sync count has changed. */
+        log->type->set_region_sync(log, region, 0);
+
+        read_lock(&rh->hash_lock);
+        reg = __rh_find(rh, region);
+        read_unlock(&rh->hash_lock);
+
+        /* region hash entry should exist because write was in-flight */
+        BUG_ON(!reg);
+        BUG_ON(!list_empty(&reg->list));
+
+        spin_lock_irqsave(&rh->region_lock, flags);
+        /*
+         * Possible cases:
+         *   1) DM_RH_DIRTY
+         *   2) DM_RH_NOSYNC: was dirty, other preceeding writes failed
+         *   3) DM_RH_RECOVERING: flushing pending writes
+         * Either case, the region should have not been connected to list.
+         */
+        recovering = (reg->state == DM_RH_RECOVERING);
+        reg->state = DM_RH_NOSYNC;
+        BUG_ON(!list_empty(&reg->list));
+        spin_unlock_irqrestore(&rh->region_lock, flags);
+
+        bio_endio(bio, error);
+        if (recovering)
+                complete_resync_work(reg, 0);
+}
+EXPORT_SYMBOL_GPL(dm_rh_mark_nosync);
+
+void dm_rh_update_states(struct dm_region_hash *rh, int errors_handled)
+{
+        struct dm_region *reg, *next;
+
+        LIST_HEAD(clean);
+        LIST_HEAD(recovered);
+        LIST_HEAD(failed_recovered);
+
+        /*
+         * Quickly grab the lists.
+         */
+        write_lock_irq(&rh->hash_lock);
+        spin_lock(&rh->region_lock);
+        if (!list_empty(&rh->clean_regions)) {
+                list_splice_init(&rh->clean_regions, &clean);
+
+                list_for_each_entry(reg, &clean, list)
+                        list_del(&reg->hash_list);
+        }
+
+        if (!list_empty(&rh->recovered_regions)) {
+                list_splice_init(&rh->recovered_regions, &recovered);
+
+                list_for_each_entry(reg, &recovered, list)
+                        list_del(&reg->hash_list);
+        }
+
+        if (!list_empty(&rh->failed_recovered_regions)) {
+                list_splice_init(&rh->failed_recovered_regions,
+                                 &failed_recovered);
+
+                list_for_each_entry(reg, &failed_recovered, list)
+                        list_del(&reg->hash_list);
+        }
+
+        spin_unlock(&rh->region_lock);
+        write_unlock_irq(&rh->hash_lock);
+
+        /*
+         * All the regions on the recovered and clean lists have
+         * now been pulled out of the system, so no need to do
+         * any more locking.
+         */
+        list_for_each_entry_safe(reg, next, &recovered, list) {
+                rh->log->type->clear_region(rh->log, reg->key);
+                complete_resync_work(reg, 1);
+                mempool_free(reg, rh->region_pool);
+        }
+
+        list_for_each_entry_safe(reg, next, &failed_recovered, list) {
+                complete_resync_work(reg, errors_handled ? 0 : 1);
+                mempool_free(reg, rh->region_pool);
+        }
+
+        list_for_each_entry_safe(reg, next, &clean, list) {
+                rh->log->type->clear_region(rh->log, reg->key);
+                mempool_free(reg, rh->region_pool);
+        }
+
+        rh->log->type->flush(rh->log);
+}
+EXPORT_SYMBOL_GPL(dm_rh_update_states);
+
+static void rh_inc(struct dm_region_hash *rh, region_t region)
+{
+        struct dm_region *reg;
+
+        read_lock(&rh->hash_lock);
+        reg = __rh_find(rh, region);
+
+        spin_lock_irq(&rh->region_lock);
+        atomic_inc(&reg->pending);
+
+        if (reg->state == DM_RH_CLEAN) {
+                reg->state = DM_RH_DIRTY;
+                list_del_init(&reg->list);      /* take off the clean list */
+                spin_unlock_irq(&rh->region_lock);
+
+                rh->log->type->mark_region(rh->log, reg->key);
+        } else
+                spin_unlock_irq(&rh->region_lock);
+
+
+        read_unlock(&rh->hash_lock);
+}
+
+void dm_rh_inc_pending(struct dm_region_hash *rh, struct bio_list *bios)
+{
+        struct bio *bio;
+
+        for (bio = bios->head; bio; bio = bio->bi_next)
+                rh_inc(rh, dm_rh_bio_to_region(rh, bio));
+}
+EXPORT_SYMBOL_GPL(dm_rh_inc_pending);
+
+void dm_rh_dec(struct dm_region_hash *rh, region_t region)
+{
+        unsigned long flags;
+        struct dm_region *reg;
+        int should_wake = 0;
+
+        read_lock(&rh->hash_lock);
+        reg = __rh_lookup(rh, region);
+        read_unlock(&rh->hash_lock);
+
+        spin_lock_irqsave(&rh->region_lock, flags);
+        if (atomic_dec_and_test(&reg->pending)) {
+                /*
+                 * There is no pending I/O for this region.
+                 * We can move the region to corresponding list for next action.
+                 * At this point, the region is not yet connected to any list.
+                 *
+                 * If the state is DM_RH_NOSYNC, the region should be kept off
+                 * from clean list.
+                 * The hash entry for DM_RH_NOSYNC will remain in memory
+                 * until the region is recovered or the map is reloaded.
+                 */
+
+                /* do nothing for DM_RH_NOSYNC */
+                if (reg->state == DM_RH_RECOVERING) {
+                        list_add_tail(&reg->list, &rh->quiesced_regions);
+                } else if (reg->state == DM_RH_DIRTY) {
+                        reg->state = DM_RH_CLEAN;
+                        list_add(&reg->list, &rh->clean_regions);
+                }
+                should_wake = 1;
+        }
+        spin_unlock_irqrestore(&rh->region_lock, flags);
+
+        if (should_wake)
+                rh->wakeup_workers(rh->context);
+}
+EXPORT_SYMBOL_GPL(dm_rh_dec);
+
+/*
+ * Starts quiescing a region in preparation for recovery.
+ */
+static int __rh_recovery_prepare(struct dm_region_hash *rh)
+{
+        int r;
+        region_t region;
+        struct dm_region *reg;
+
+        /*
+         * Ask the dirty log what's next.
+         */
+        r = rh->log->type->get_resync_work(rh->log, &region);
+        if (r <= 0)
+                return r;
+
+        /*
+         * Get this region, and start it quiescing by setting the
+         * recovering flag.
+         */
+        read_lock(&rh->hash_lock);
+        reg = __rh_find(rh, region);
+        read_unlock(&rh->hash_lock);
+
+        spin_lock_irq(&rh->region_lock);
+        reg->state = DM_RH_RECOVERING;
+
+        /* Already quiesced ? */
+        if (atomic_read(&reg->pending))
+                list_del_init(&reg->list);
+        else
+                list_move(&reg->list, &rh->quiesced_regions);
+
+        spin_unlock_irq(&rh->region_lock);
+
+        return 1;
+}
+
+void dm_rh_recovery_prepare(struct dm_region_hash *rh)
+{
+        /* Extra reference to avoid race with dm_rh_stop_recovery */
+        atomic_inc(&rh->recovery_in_flight);
+
+        while (!down_trylock(&rh->recovery_count)) {
+                atomic_inc(&rh->recovery_in_flight);
+                if (__rh_recovery_prepare(rh) <= 0) {
+                        atomic_dec(&rh->recovery_in_flight);
+                        up(&rh->recovery_count);
+                        break;
+                }
+        }
+
+        /* Drop the extra reference */
+        if (atomic_dec_and_test(&rh->recovery_in_flight))
+                rh->wakeup_all_recovery_waiters(rh->context);
+}
+EXPORT_SYMBOL_GPL(dm_rh_recovery_prepare);
+
+/*
+ * Returns any quiesced regions.
+ */
+struct dm_region *dm_rh_recovery_start(struct dm_region_hash *rh)
+{
+        struct dm_region *reg = NULL;
+
+        spin_lock_irq(&rh->region_lock);
+        if (!list_empty(&rh->quiesced_regions)) {
+                reg = list_entry(rh->quiesced_regions.next,
+                                 struct dm_region, list);
+                list_del_init(&reg->list);  /* remove from the quiesced list */
+        }
+        spin_unlock_irq(&rh->region_lock);
+
+        return reg;
+}
+EXPORT_SYMBOL_GPL(dm_rh_recovery_start);
+
+void dm_rh_recovery_end(struct dm_region *reg, int success)
+{
+        struct dm_region_hash *rh = reg->rh;
+
+        spin_lock_irq(&rh->region_lock);
+        if (success)
+                list_add(&reg->list, &reg->rh->recovered_regions);
+        else {
+                reg->state = DM_RH_NOSYNC;
+                list_add(&reg->list, &reg->rh->failed_recovered_regions);
+        }
+        spin_unlock_irq(&rh->region_lock);
+
+        rh->wakeup_workers(rh->context);
+}
+EXPORT_SYMBOL_GPL(dm_rh_recovery_end);
+
+/* Return recovery in flight count. */
+int dm_rh_recovery_in_flight(struct dm_region_hash *rh)
+{
+        return atomic_read(&rh->recovery_in_flight);
+}
+EXPORT_SYMBOL_GPL(dm_rh_recovery_in_flight);
+
+int dm_rh_flush(struct dm_region_hash *rh)
+{
+        return rh->log->type->flush(rh->log);
+}
+EXPORT_SYMBOL_GPL(dm_rh_flush);
+
+void dm_rh_delay(struct dm_region_hash *rh, struct bio *bio)
+{
+        struct dm_region *reg;
+
+        read_lock(&rh->hash_lock);
+        reg = __rh_find(rh, dm_rh_bio_to_region(rh, bio));
+        bio_list_add(&reg->delayed_bios, bio);
+        read_unlock(&rh->hash_lock);
+}
+EXPORT_SYMBOL_GPL(dm_rh_delay);
+
+void dm_rh_stop_recovery(struct dm_region_hash *rh)
+{
+        int i;
+
+        /* wait for any recovering regions */
+        for (i = 0; i < rh->max_recovery; i++)
+                down(&rh->recovery_count);
+}
+EXPORT_SYMBOL_GPL(dm_rh_stop_recovery);
+
+void dm_rh_start_recovery(struct dm_region_hash *rh)
+{
+        int i;
+
+        for (i = 0; i < rh->max_recovery; i++)
+                up(&rh->recovery_count);
+
+        rh->wakeup_workers(rh->context);
+}
+EXPORT_SYMBOL_GPL(dm_rh_start_recovery);
+
+MODULE_DESCRIPTION(DM_NAME " region hash");
+MODULE_AUTHOR("Joe Thornber/Heinz Mauelshagen <dm-devel@redhat.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/md/dm-round-robin.c b/drivers/md/dm-round-robin.c
index 391dfa2ad434..cdfbf65b28cb 100644
--- a/drivers/md/dm-round-robin.c
+++ b/drivers/md/dm-round-robin.c
@@ -9,7 +9,8 @@
  * Round-robin path selector.
  */
 
-#include "dm.h"
+#include <linux/device-mapper.h>
+
 #include "dm-path-selector.h"
 
 #include <linux/slab.h>
diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c
index 6e5528aecc98..b2d9d1ac28ad 100644
--- a/drivers/md/dm-snap.c
+++ b/drivers/md/dm-snap.c
@@ -600,7 +600,6 @@ static int snapshot_ctr(struct dm_target *ti, unsigned int argc, char **argv)
 
         s->valid = 1;
         s->active = 0;
-        s->last_percent = 0;
         init_rwsem(&s->lock);
         spin_lock_init(&s->pe_lock);
         s->ti = ti;
@@ -824,8 +823,10 @@ static struct bio *put_pending_exception(struct dm_snap_pending_exception *pe)
          * the bios for the original write to the origin.
          */
         if (primary_pe &&
-            atomic_dec_and_test(&primary_pe->ref_count))
+            atomic_dec_and_test(&primary_pe->ref_count)) {
                 origin_bios = bio_list_get(&primary_pe->origin_bios);
+                free_pending_exception(primary_pe);
+        }
 
         /*
          * Free the pe if it's not linked to an origin write or if
@@ -834,12 +835,6 @@ static struct bio *put_pending_exception(struct dm_snap_pending_exception *pe)
         if (!primary_pe || primary_pe != pe)
                 free_pending_exception(pe);
 
-        /*
-         * Free the primary pe if nothing references it.
-         */
-        if (primary_pe && !atomic_read(&primary_pe->ref_count))
-                free_pending_exception(primary_pe);
-
         return origin_bios;
 }
 
diff --git a/drivers/md/dm-snap.h b/drivers/md/dm-snap.h
index 292c15609ae3..f07315fe2362 100644
--- a/drivers/md/dm-snap.h
+++ b/drivers/md/dm-snap.h
@@ -9,7 +9,7 @@
 #ifndef DM_SNAPSHOT_H
 #define DM_SNAPSHOT_H
 
-#include "dm.h"
+#include <linux/device-mapper.h>
 #include "dm-bio-list.h"
 #include <linux/blkdev.h>
 #include <linux/workqueue.h>
@@ -158,9 +158,6 @@ struct dm_snapshot {
         /* Used for display of table */
         char type;
 
-        /* The last percentage we notified */
-        int last_percent;
-
         mempool_t *pending_pool;
 
         struct exception_table pending;
diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c
index b745d8ac625b..a2d068dbe9e2 100644
--- a/drivers/md/dm-stripe.c
+++ b/drivers/md/dm-stripe.c
@@ -4,7 +4,7 @@
  * This file is released under the GPL.
  */
 
-#include "dm.h"
+#include <linux/device-mapper.h>
 
 #include <linux/module.h>
 #include <linux/init.h>
@@ -60,8 +60,8 @@ static inline struct stripe_c *alloc_context(unsigned int stripes)
 {
         size_t len;
 
-        if (array_too_big(sizeof(struct stripe_c), sizeof(struct stripe),
-                          stripes))
+        if (dm_array_too_big(sizeof(struct stripe_c), sizeof(struct stripe),
+                             stripes))
                 return NULL;
 
         len = sizeof(struct stripe_c) + (sizeof(struct stripe) * stripes);
diff --git a/drivers/md/dm-zero.c b/drivers/md/dm-zero.c
index bdec206c404b..cdbf126ec106 100644
--- a/drivers/md/dm-zero.c
+++ b/drivers/md/dm-zero.c
@@ -4,7 +4,7 @@
  * This file is released under the GPL.
  */
 
-#include "dm.h"
+#include <linux/device-mapper.h>
 
 #include <linux/module.h>
 #include <linux/init.h>
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 327de03a5bdf..d1d0cd0f5750 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -76,7 +76,6 @@ union map_info *dm_get_mapinfo(struct bio *bio)
  */
 struct dm_wq_req {
         enum {
-                DM_WQ_FLUSH_ALL,
                 DM_WQ_FLUSH_DEFERRED,
         } type;
         struct work_struct work;
@@ -151,40 +150,40 @@ static struct kmem_cache *_tio_cache;
 
 static int __init local_init(void)
 {
-        int r;
+        int r = -ENOMEM;
 
         /* allocate a slab for the dm_ios */
         _io_cache = KMEM_CACHE(dm_io, 0);
         if (!_io_cache)
-                return -ENOMEM;
+                return r;
 
         /* allocate a slab for the target ios */
         _tio_cache = KMEM_CACHE(dm_target_io, 0);
-        if (!_tio_cache) {
-                kmem_cache_destroy(_io_cache);
-                return -ENOMEM;
-        }
+        if (!_tio_cache)
+                goto out_free_io_cache;
 
         r = dm_uevent_init();
-        if (r) {
-                kmem_cache_destroy(_tio_cache);
-                kmem_cache_destroy(_io_cache);
-                return r;
-        }
+        if (r)
+                goto out_free_tio_cache;
 
         _major = major;
         r = register_blkdev(_major, _name);
-        if (r < 0) {
-                kmem_cache_destroy(_tio_cache);
-                kmem_cache_destroy(_io_cache);
-                dm_uevent_exit();
-                return r;
-        }
+        if (r < 0)
+                goto out_uevent_exit;
 
         if (!_major)
                 _major = r;
 
         return 0;
+
+out_uevent_exit:
+        dm_uevent_exit();
+out_free_tio_cache:
+        kmem_cache_destroy(_tio_cache);
+out_free_io_cache:
+        kmem_cache_destroy(_io_cache);
+
+        return r;
 }
 
 static void local_exit(void)
@@ -669,6 +668,7 @@ static struct bio *split_bvec(struct bio *bio, sector_t sector,
         clone->bi_size = to_bytes(len);
         clone->bi_io_vec->bv_offset = offset;
         clone->bi_io_vec->bv_len = clone->bi_size;
+        clone->bi_flags |= 1 << BIO_CLONED;
 
         return clone;
 }
@@ -1394,9 +1394,6 @@ static void dm_wq_work(struct work_struct *work)
 
         down_write(&md->io_lock);
         switch (req->type) {
-        case DM_WQ_FLUSH_ALL:
-                __merge_pushback_list(md);
-                /* pass through */
         case DM_WQ_FLUSH_DEFERRED:
                 __flush_deferred_io(md);
                 break;
@@ -1526,7 +1523,7 @@ int dm_suspend(struct mapped_device *md, unsigned suspend_flags)
                 if (!md->suspended_bdev) {
                         DMWARN("bdget failed in dm_suspend");
                         r = -ENOMEM;
-                        goto flush_and_out;
+                        goto out;
                 }
 
                 /*
@@ -1577,14 +1574,6 @@ int dm_suspend(struct mapped_device *md, unsigned suspend_flags)
 
         set_bit(DMF_SUSPENDED, &md->flags);
 
-flush_and_out:
-        if (r && noflush)
-                /*
-                 * Because there may be already I/Os in the pushback list,
-                 * flush them before return.
-                 */
-                dm_queue_flush(md, DM_WQ_FLUSH_ALL, NULL);
-
 out:
         if (r && md->suspended_bdev) {
                 bdput(md->suspended_bdev);
diff --git a/drivers/md/dm.h b/drivers/md/dm.h
index cd189da2b2fa..0ade60cdef42 100644
--- a/drivers/md/dm.h
+++ b/drivers/md/dm.h
@@ -62,15 +62,6 @@ void dm_put_target_type(struct target_type *t);
 int dm_target_iterate(void (*iter_func)(struct target_type *tt,
                                         void *param), void *param);
 
-/*-----------------------------------------------------------------
- * Useful inlines.
- *---------------------------------------------------------------*/
-static inline int array_too_big(unsigned long fixed, unsigned long obj,
-                                unsigned long num)
-{
-        return (num > (ULONG_MAX - fixed) / obj);
-}
-
 int dm_split_args(int *argc, char ***argvp, char *input);
 
 /*
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 68e237b830ad..0acefe8aff87 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -17,7 +17,7 @@ wm8350-objs			:= wm8350-core.o wm8350-regmap.o wm8350-gpio.o
 obj-$(CONFIG_MFD_WM8350)        += wm8350.o
 obj-$(CONFIG_MFD_WM8350_I2C)    += wm8350-i2c.o
 
-obj-$(CONFIG_TWL4030_CORE)      += twl4030-core.o
+obj-$(CONFIG_TWL4030_CORE)      += twl4030-core.o twl4030-irq.o
 
 obj-$(CONFIG_MFD_CORE)          += mfd-core.o
 
diff --git a/drivers/mfd/sm501.c b/drivers/mfd/sm501.c
index 220e4371266b..170f9d47c2f9 100644
--- a/drivers/mfd/sm501.c
+++ b/drivers/mfd/sm501.c
@@ -1374,31 +1374,31 @@ static int sm501_init_dev(struct sm501_devdata *sm)
 static int sm501_plat_probe(struct platform_device *dev)
 {
         struct sm501_devdata *sm;
-        int err;
+        int ret;
 
         sm = kzalloc(sizeof(struct sm501_devdata), GFP_KERNEL);
         if (sm == NULL) {
                 dev_err(&dev->dev, "no memory for device data\n");
-                err = -ENOMEM;
+                ret = -ENOMEM;
                 goto err1;
         }
 
         sm->dev = &dev->dev;
         sm->pdev_id = dev->id;
-        sm->irq = platform_get_irq(dev, 0);
-        sm->io_res = platform_get_resource(dev, IORESOURCE_MEM, 1);
-        sm->mem_res = platform_get_resource(dev, IORESOURCE_MEM, 0);
         sm->platdata = dev->dev.platform_data;
 
-        if (sm->irq < 0) {
+        ret = platform_get_irq(dev, 0);
+        if (ret < 0) {
                 dev_err(&dev->dev, "failed to get irq resource\n");
-                err = sm->irq;
                 goto err_res;
         }
+        sm->irq = ret;
 
+        sm->io_res = platform_get_resource(dev, IORESOURCE_MEM, 1);
+        sm->mem_res = platform_get_resource(dev, IORESOURCE_MEM, 0);
         if (sm->io_res == NULL || sm->mem_res == NULL) {
                 dev_err(&dev->dev, "failed to get IO resource\n");
-                err = -ENOENT;
+                ret = -ENOENT;
                 goto err_res;
         }
 
@@ -1407,7 +1407,7 @@ static int sm501_plat_probe(struct platform_device *dev)
 
         if (sm->regs_claim == NULL) {
                 dev_err(&dev->dev, "cannot claim registers\n");
-                err= -EBUSY;
+                ret = -EBUSY;
                 goto err_res;
         }
 
@@ -1418,7 +1418,7 @@ static int sm501_plat_probe(struct platform_device *dev)
 
         if (sm->regs == NULL) {
                 dev_err(&dev->dev, "cannot remap registers\n");
-                err = -EIO;
+                ret = -EIO;
                 goto err_claim;
         }
 
@@ -1430,7 +1430,7 @@ static int sm501_plat_probe(struct platform_device *dev)
  err_res:
         kfree(sm);
  err1:
-        return err;
+        return ret;
 
 }
 
@@ -1625,8 +1625,7 @@ static int sm501_pci_probe(struct pci_dev *dev,
                 goto err3;
         }
 
-        sm->regs = ioremap(pci_resource_start(dev, 1),
-                           pci_resource_len(dev, 1));
+        sm->regs = pci_ioremap_bar(dev, 1);
 
         if (sm->regs == NULL) {
                 dev_err(&dev->dev, "cannot remap registers\n");
diff --git a/drivers/mfd/twl4030-core.c b/drivers/mfd/twl4030-core.c
index fd9a0160202c..dd843c4fbcc7 100644
--- a/drivers/mfd/twl4030-core.c
+++ b/drivers/mfd/twl4030-core.c
@@ -27,15 +27,11 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  */
 
-#include <linux/kernel_stat.h>
 #include <linux/init.h>
 #include <linux/mutex.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/random.h>
-#include <linux/kthread.h>
 #include <linux/platform_device.h>
 #include <linux/clk.h>
+#include <linux/err.h>
 
 #include <linux/i2c.h>
 #include <linux/i2c/twl4030.h>
@@ -93,26 +89,6 @@
 #define twl_has_usb()   false
 #endif
 
-static inline void activate_irq(int irq)
-{
-#ifdef CONFIG_ARM
-        /* ARM requires an extra step to clear IRQ_NOREQUEST, which it
-         * sets on behalf of every irq_chip.  Also sets IRQ_NOPROBE.
-         */
-        set_irq_flags(irq, IRQF_VALID);
-#else
-        /* same effect on other architectures */
-        set_irq_noprobe(irq);
-#endif
-}
-
-/* Primary Interrupt Handler on TWL4030 Registers */
-
-/* Register Definitions */
-
-#define REG_PIH_ISR_P1                  (0x1)
-#define REG_PIH_ISR_P2                  (0x2)
-#define REG_PIH_SIR                     (0x3)
 
 /* Triton Core internal information (BEGIN) */
 
@@ -175,138 +151,6 @@ static inline void activate_irq(int irq)
 
 /*----------------------------------------------------------------------*/
 
-/**
- * struct twl4030_mod_iregs - TWL module IMR/ISR regs to mask/clear at init
- * @mod_no: TWL4030 module number (e.g., TWL4030_MODULE_GPIO)
- * @sih_ctrl: address of module SIH_CTRL register
- * @reg_cnt: number of IMR/ISR regs
- * @imrs: pointer to array of TWL module interrupt mask register indices
- * @isrs: pointer to array of TWL module interrupt status register indices
- *
- * Ties together TWL4030 modules and lists of IMR/ISR registers to mask/clear
- * during twl_init_irq().
- */
-struct twl4030_mod_iregs {
-        const u8 mod_no;
-        const u8 sih_ctrl;
-        const u8 reg_cnt;
-        const u8 *imrs;
-        const u8 *isrs;
-};
-
-/* TWL4030 INT module interrupt mask registers */
-static const u8 __initconst twl4030_int_imr_regs[] = {
-        TWL4030_INT_PWR_IMR1,
-        TWL4030_INT_PWR_IMR2,
-};
-
-/* TWL4030 INT module interrupt status registers */
-static const u8 __initconst twl4030_int_isr_regs[] = {
-        TWL4030_INT_PWR_ISR1,
-        TWL4030_INT_PWR_ISR2,
-};
-
-/* TWL4030 INTERRUPTS module interrupt mask registers */
-static const u8 __initconst twl4030_interrupts_imr_regs[] = {
-        TWL4030_INTERRUPTS_BCIIMR1A,
-        TWL4030_INTERRUPTS_BCIIMR1B,
-        TWL4030_INTERRUPTS_BCIIMR2A,
-        TWL4030_INTERRUPTS_BCIIMR2B,
-};
-
-/* TWL4030 INTERRUPTS module interrupt status registers */
-static const u8 __initconst twl4030_interrupts_isr_regs[] = {
-        TWL4030_INTERRUPTS_BCIISR1A,
-        TWL4030_INTERRUPTS_BCIISR1B,
-        TWL4030_INTERRUPTS_BCIISR2A,
-        TWL4030_INTERRUPTS_BCIISR2B,
-};
-
-/* TWL4030 MADC module interrupt mask registers */
-static const u8 __initconst twl4030_madc_imr_regs[] = {
-        TWL4030_MADC_IMR1,
-        TWL4030_MADC_IMR2,
-};
-
-/* TWL4030 MADC module interrupt status registers */
-static const u8 __initconst twl4030_madc_isr_regs[] = {
-        TWL4030_MADC_ISR1,
-        TWL4030_MADC_ISR2,
-};
-
-/* TWL4030 keypad module interrupt mask registers */
-static const u8 __initconst twl4030_keypad_imr_regs[] = {
-        TWL4030_KEYPAD_KEYP_IMR1,
-        TWL4030_KEYPAD_KEYP_IMR2,
-};
-
-/* TWL4030 keypad module interrupt status registers */
-static const u8 __initconst twl4030_keypad_isr_regs[] = {
-        TWL4030_KEYPAD_KEYP_ISR1,
-        TWL4030_KEYPAD_KEYP_ISR2,
-};
-
-/* TWL4030 GPIO module interrupt mask registers */
-static const u8 __initconst twl4030_gpio_imr_regs[] = {
-        REG_GPIO_IMR1A,
-        REG_GPIO_IMR1B,
-        REG_GPIO_IMR2A,
-        REG_GPIO_IMR2B,
-        REG_GPIO_IMR3A,
-        REG_GPIO_IMR3B,
-};
-
-/* TWL4030 GPIO module interrupt status registers */
-static const u8 __initconst twl4030_gpio_isr_regs[] = {
-        REG_GPIO_ISR1A,
-        REG_GPIO_ISR1B,
-        REG_GPIO_ISR2A,
-        REG_GPIO_ISR2B,
-        REG_GPIO_ISR3A,
-        REG_GPIO_ISR3B,
-};
-
-/* TWL4030 modules that have IMR/ISR registers that must be masked/cleared */
-static const struct twl4030_mod_iregs __initconst twl4030_mod_regs[] = {
-        {
-                .mod_no   = TWL4030_MODULE_INT,
-                .sih_ctrl = TWL4030_INT_PWR_SIH_CTRL,
-                .reg_cnt  = ARRAY_SIZE(twl4030_int_imr_regs),
-                .imrs     = twl4030_int_imr_regs,
-                .isrs     = twl4030_int_isr_regs,
-        },
-        {
-                .mod_no   = TWL4030_MODULE_INTERRUPTS,
-                .sih_ctrl = TWL4030_INTERRUPTS_BCISIHCTRL,
-                .reg_cnt  = ARRAY_SIZE(twl4030_interrupts_imr_regs),
-                .imrs     = twl4030_interrupts_imr_regs,
-                .isrs     = twl4030_interrupts_isr_regs,
-        },
-        {
-                .mod_no   = TWL4030_MODULE_MADC,
-                .sih_ctrl = TWL4030_MADC_SIH_CTRL,
-                .reg_cnt  = ARRAY_SIZE(twl4030_madc_imr_regs),
-                .imrs     = twl4030_madc_imr_regs,
-                .isrs     = twl4030_madc_isr_regs,
-        },
-        {
-                .mod_no   = TWL4030_MODULE_KEYPAD,
-                .sih_ctrl = TWL4030_KEYPAD_KEYP_SIH_CTRL,
-                .reg_cnt  = ARRAY_SIZE(twl4030_keypad_imr_regs),
-                .imrs     = twl4030_keypad_imr_regs,
-                .isrs     = twl4030_keypad_isr_regs,
-        },
-        {
-                .mod_no   = TWL4030_MODULE_GPIO,
-                .sih_ctrl = REG_GPIO_SIH_CTRL,
-                .reg_cnt  = ARRAY_SIZE(twl4030_gpio_imr_regs),
-                .imrs     = twl4030_gpio_imr_regs,
-                .isrs     = twl4030_gpio_isr_regs,
-        },
-};
-
-/*----------------------------------------------------------------*/
-
 /* is driver active, bound to a chip? */
 static bool inuse;
 
@@ -367,33 +211,6 @@ static struct twl4030mapping twl4030_map[TWL4030_MODULE_LAST + 1] = {
 
 /*----------------------------------------------------------------------*/
 
-/*
- * TWL4030 doesn't have PIH mask, hence dummy function for mask
- * and unmask of the (eight) interrupts reported at that level ...
- * masking is only available from SIH (secondary) modules.
- */
-
-static void twl4030_i2c_ackirq(unsigned int irq)
-{
-}
-
-static void twl4030_i2c_disableint(unsigned int irq)
-{
-}
-
-static void twl4030_i2c_enableint(unsigned int irq)
-{
-}
-
-static struct irq_chip twl4030_irq_chip = {
-        .name   = "twl4030",
-        .ack    = twl4030_i2c_ackirq,
-        .mask   = twl4030_i2c_disableint,
-        .unmask = twl4030_i2c_enableint,
-};
-
-/*----------------------------------------------------------------------*/
-
 /* Exported Functions */
 
 /**
@@ -535,108 +352,11 @@ EXPORT_SYMBOL(twl4030_i2c_read_u8);
 
 /*----------------------------------------------------------------------*/
 
-static unsigned twl4030_irq_base;
-
-static struct completion irq_event;
-
-/*
- * This thread processes interrupts reported by the Primary Interrupt Handler.
- */
-static int twl4030_irq_thread(void *data)
-{
-        long irq = (long)data;
-        irq_desc_t *desc = irq_desc + irq;
-        static unsigned i2c_errors;
-        const static unsigned max_i2c_errors = 100;
-
-        current->flags |= PF_NOFREEZE;
-
-        while (!kthread_should_stop()) {
-                int ret;
-                int module_irq;
-                u8 pih_isr;
-
-                /* Wait for IRQ, then read PIH irq status (also blocking) */
-                wait_for_completion_interruptible(&irq_event);
-
-                ret = twl4030_i2c_read_u8(TWL4030_MODULE_PIH, &pih_isr,
-                                          REG_PIH_ISR_P1);
-                if (ret) {
-                        pr_warning("%s: I2C error %d reading PIH ISR\n",
-                                        DRIVER_NAME, ret);
-                        if (++i2c_errors >= max_i2c_errors) {
-                                printk(KERN_ERR "Maximum I2C error count"
-                                                " exceeded.  Terminating %s.\n",
-                                                __func__);
-                                break;
-                        }
-                        complete(&irq_event);
-                        continue;
-                }
-
-                /* these handlers deal with the relevant SIH irq status */
-                local_irq_disable();
-                for (module_irq = twl4030_irq_base;
-                                pih_isr;
-                                pih_isr >>= 1, module_irq++) {
-                        if (pih_isr & 0x1) {
-                                irq_desc_t *d = irq_desc + module_irq;
-
-                                d->handle_irq(module_irq, d);
-                        }
-                }
-                local_irq_enable();
-
-                desc->chip->unmask(irq);
-        }
-
-        return 0;
-}
-
 /*
- * do_twl4030_irq() is the desc->handle method for the twl4030 interrupt.
- * This is a chained interrupt, so there is no desc->action method for it.
- * Now we need to query the interrupt controller in the twl4030 to determine
- * which module is generating the interrupt request.  However, we can't do i2c
- * transactions in interrupt context, so we must defer that work to a kernel
- * thread.  All we do here is acknowledge and mask the interrupt and wakeup
- * the kernel thread.
+ * NOTE:  We know the first 8 IRQs after pdata->base_irq are
+ * for the PIH, and the next are for the PWR_INT SIH, since
+ * that's how twl_init_irq() sets things up.
  */
-static void do_twl4030_irq(unsigned int irq, irq_desc_t *desc)
-{
-        const unsigned int cpu = smp_processor_id();
-
-        /*
-         * Earlier this was desc->triggered = 1;
-         */
-        desc->status |= IRQ_LEVEL;
-
-        /*
-         * Acknowledge, clear _AND_ disable the interrupt.
-         */
-        desc->chip->ack(irq);
-
-        if (!desc->depth) {
-                kstat_cpu(cpu).irqs[irq]++;
-
-                complete(&irq_event);
-        }
-}
-
-static struct task_struct * __init start_twl4030_irq_thread(long irq)
-{
-        struct task_struct *thread;
-
-        init_completion(&irq_event);
-        thread = kthread_run(twl4030_irq_thread, (void *)irq, "twl4030-irq");
-        if (!thread)
-                pr_err("%s: could not create twl4030 irq %ld thread!\n",
-                       DRIVER_NAME, irq);
-
-        return thread;
-}
-
-/*----------------------------------------------------------------------*/
 
 static int add_children(struct twl4030_platform_data *pdata)
 {
@@ -668,7 +388,7 @@ static int add_children(struct twl4030_platform_data *pdata)
 
                 if (status == 0) {
                         struct resource r = {
-                                .start = TWL4030_PWRIRQ_CHG_PRES,
+                                .start = pdata->irq_base + 8 + 1,
                                 .flags = IORESOURCE_IRQ,
                         };
 
@@ -817,8 +537,7 @@ static int add_children(struct twl4030_platform_data *pdata)
                 /* RTC module IRQ */
                 if (status == 0) {
                         struct resource r = {
-                                /* REVISIT don't hard-wire this stuff */
-                                .start = TWL4030_PWRIRQ_RTC,
+                                .start = pdata->irq_base + 8 + 3,
                                 .flags = IORESOURCE_IRQ,
                         };
 
@@ -863,7 +582,7 @@ static int add_children(struct twl4030_platform_data *pdata)
 
                 if (status == 0) {
                         struct resource r = {
-                                .start = TWL4030_PWRIRQ_USB_PRES,
+                                .start = pdata->irq_base + 8 + 2,
                                 .flags = IORESOURCE_IRQ,
                         };
 
@@ -965,123 +684,17 @@ static void __init clocks_init(void)
 
 /*----------------------------------------------------------------------*/
 
-/**
- * twl4030_i2c_clear_isr - clear TWL4030 SIH ISR regs via read + write
- * @mod_no: TWL4030 module number
- * @reg: register index to clear
- * @cor: value of the <module>_SIH_CTRL.COR bit (1 or 0)
- *
- * Either reads (cor == 1) or writes (cor == 0) to a TWL4030 interrupt
- * status register to ensure that any prior interrupts are cleared.
- * Returns the status from the I2C read operation.
- */
-static int __init twl4030_i2c_clear_isr(u8 mod_no, u8 reg, u8 cor)
-{
-        u8 tmp;
-
-        return (cor) ? twl4030_i2c_read_u8(mod_no, &tmp, reg) :
-                twl4030_i2c_write_u8(mod_no, 0xff, reg);
-}
-
-/**
- * twl4030_read_cor_bit - are TWL module ISRs cleared by reads or writes?
- * @mod_no: TWL4030 module number
- * @reg: register index to clear
- *
- * Returns 1 if the TWL4030 SIH interrupt status registers (ISRs) for
- * the specified TWL module are cleared by reads, or 0 if cleared by
- * writes.
- */
-static int twl4030_read_cor_bit(u8 mod_no, u8 reg)
-{
-        u8 tmp = 0;
-
-        WARN_ON(twl4030_i2c_read_u8(mod_no, &tmp, reg) < 0);
-
-        tmp &= TWL4030_SIH_CTRL_COR_MASK;
-        tmp >>= __ffs(TWL4030_SIH_CTRL_COR_MASK);
-
-        return tmp;
-}
-
-/**
- * twl4030_mask_clear_intrs - mask and clear all TWL4030 interrupts
- * @t: pointer to twl4030_mod_iregs array
- * @t_sz: ARRAY_SIZE(t) (starting at 1)
- *
- * Mask all TWL4030 interrupt mask registers (IMRs) and clear all
- * interrupt status registers (ISRs).  No return value, but will WARN if
- * any I2C operations fail.
- */
-static void __init twl4030_mask_clear_intrs(const struct twl4030_mod_iregs *t,
-                                            const u8 t_sz)
-{
-        int i, j;
-
-        /*
-         * N.B. - further efficiency is possible here.  Eight I2C
-         * operations on BCI and GPIO modules are avoidable if I2C
-         * burst read/write transactions were implemented.  Would
-         * probably save about 1ms of boot time and a small amount of
-         * power.
-         */
-        for (i = 0; i < t_sz; i++) {
-                const struct twl4030_mod_iregs tmr = t[i];
-                int cor;
-
-                /* Are ISRs cleared by reads or writes? */
-                cor = twl4030_read_cor_bit(tmr.mod_no, tmr.sih_ctrl);
-
-                for (j = 0; j < tmr.reg_cnt; j++) {
-
-                        /* Mask interrupts at the TWL4030 */
-                        WARN_ON(twl4030_i2c_write_u8(tmr.mod_no, 0xff,
-                                                     tmr.imrs[j]) < 0);
-
-                        /* Clear TWL4030 ISRs */
-                        WARN_ON(twl4030_i2c_clear_isr(tmr.mod_no,
-                                                      tmr.isrs[j], cor) < 0);
-                }
-        }
-}
-
-
-static void twl_init_irq(int irq_num, unsigned irq_base, unsigned irq_end)
-{
-        int     i;
-
-        /*
-         * Mask and clear all TWL4030 interrupts since initially we do
-         * not have any TWL4030 module interrupt handlers present
-         */
-        twl4030_mask_clear_intrs(twl4030_mod_regs,
-                                 ARRAY_SIZE(twl4030_mod_regs));
-
-        twl4030_irq_base = irq_base;
-
-        /* install an irq handler for each of the PIH modules */
-        for (i = irq_base; i < irq_end; i++) {
-                set_irq_chip_and_handler(i, &twl4030_irq_chip,
-                                handle_simple_irq);
-                activate_irq(i);
-        }
-
-        /* install an irq handler to demultiplex the TWL4030 interrupt */
-        set_irq_data(irq_num, start_twl4030_irq_thread(irq_num));
-        set_irq_chained_handler(irq_num, do_twl4030_irq);
-}
-
-/*----------------------------------------------------------------------*/
+int twl_init_irq(int irq_num, unsigned irq_base, unsigned irq_end);
+int twl_exit_irq(void);
 
 static int twl4030_remove(struct i2c_client *client)
 {
         unsigned i;
+        int status;
 
-        /* FIXME undo twl_init_irq() */
-        if (twl4030_irq_base) {
-                dev_err(&client->dev, "can't yet clean up IRQs?\n");
-                return -ENOSYS;
-        }
+        status = twl_exit_irq();
+        if (status < 0)
+                return status;
 
         for (i = 0; i < TWL4030_NUM_SLAVES; i++) {
                 struct twl4030_client   *twl = &twl4030_modules[i];
@@ -1112,7 +725,7 @@ twl4030_probe(struct i2c_client *client, const struct i2c_device_id *id)
                 return -EIO;
         }
 
-        if (inuse || twl4030_irq_base) {
+        if (inuse) {
                 dev_dbg(&client->dev, "driver is already in use\n");
                 return -EBUSY;
         }
@@ -1146,9 +759,9 @@ twl4030_probe(struct i2c_client *client, const struct i2c_device_id *id)
         if (client->irq
                         && pdata->irq_base
                         && pdata->irq_end > pdata->irq_base) {
-                twl_init_irq(client->irq, pdata->irq_base, pdata->irq_end);
-                dev_info(&client->dev, "IRQ %d chains IRQs %d..%d\n",
-                                client->irq, pdata->irq_base, pdata->irq_end - 1);
+                status = twl_init_irq(client->irq, pdata->irq_base, pdata->irq_end);
+                if (status < 0)
+                        goto fail;
         }
 
         status = add_children(pdata);
diff --git a/drivers/mfd/twl4030-irq.c b/drivers/mfd/twl4030-irq.c
new file mode 100644
index 000000000000..fae868a8d499
--- /dev/null
+++ b/drivers/mfd/twl4030-irq.c
@@ -0,0 +1,743 @@
+/*
+ * twl4030-irq.c - TWL4030/TPS659x0 irq support
+ *
+ * Copyright (C) 2005-2006 Texas Instruments, Inc.
+ *
+ * Modifications to defer interrupt handling to a kernel thread:
+ * Copyright (C) 2006 MontaVista Software, Inc.
+ *
+ * Based on tlv320aic23.c:
+ * Copyright (c) by Kai Svahn <kai.svahn@nokia.com>
+ *
+ * Code cleanup and modifications to IRQ handler.
+ * by syed khasim <x0khasim@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ */
+
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/kthread.h>
+
+#include <linux/i2c/twl4030.h>
+
+
+/*
+ * TWL4030 IRQ handling has two stages in hardware, and thus in software.
+ * The Primary Interrupt Handler (PIH) stage exposes status bits saying
+ * which Secondary Interrupt Handler (SIH) stage is raising an interrupt.
+ * SIH modules are more traditional IRQ components, which support per-IRQ
+ * enable/disable and trigger controls; they do most of the work.
+ *
+ * These chips are designed to support IRQ handling from two different
+ * I2C masters.  Each has a dedicated IRQ line, and dedicated IRQ status
+ * and mask registers in the PIH and SIH modules.
+ *
+ * We set up IRQs starting at a platform-specified base, always starting
+ * with PIH and the SIH for PWR_INT and then usually adding GPIO:
+ *      base + 0  .. base + 7   PIH
+ *      base + 8  .. base + 15  SIH for PWR_INT
+ *      base + 16 .. base + 33  SIH for GPIO
+ */
+
+/* PIH register offsets */
+#define REG_PIH_ISR_P1                  0x01
+#define REG_PIH_ISR_P2                  0x02
+#define REG_PIH_SIR                     0x03    /* for testing */
+
+
+/* Linux could (eventually) use either IRQ line */
+static int irq_line;
+
+struct sih {
+        char    name[8];
+        u8      module;                 /* module id */
+        u8      control_offset;         /* for SIH_CTRL */
+        bool    set_cor;
+
+        u8      bits;                   /* valid in isr/imr */
+        u8      bytes_ixr;              /* bytelen of ISR/IMR/SIR */
+
+        u8      edr_offset;
+        u8      bytes_edr;              /* bytelen of EDR */
+
+        /* SIR ignored -- set interrupt, for testing only */
+        struct irq_data {
+                u8      isr_offset;
+                u8      imr_offset;
+        } mask[2];
+        /* + 2 bytes padding */
+};
+
+#define SIH_INITIALIZER(modname, nbits) \
+        .module         = TWL4030_MODULE_ ## modname, \
+        .control_offset = TWL4030_ ## modname ## _SIH_CTRL, \
+        .bits           = nbits, \
+        .bytes_ixr      = DIV_ROUND_UP(nbits, 8), \
+        .edr_offset     = TWL4030_ ## modname ## _EDR, \
+        .bytes_edr      = DIV_ROUND_UP((2*(nbits)), 8), \
+        .mask = { { \
+                .isr_offset     = TWL4030_ ## modname ## _ISR1, \
+                .imr_offset     = TWL4030_ ## modname ## _IMR1, \
+        }, \
+        { \
+                .isr_offset     = TWL4030_ ## modname ## _ISR2, \
+                .imr_offset     = TWL4030_ ## modname ## _IMR2, \
+        }, },
+
+/* register naming policies are inconsistent ... */
+#define TWL4030_INT_PWR_EDR             TWL4030_INT_PWR_EDR1
+#define TWL4030_MODULE_KEYPAD_KEYP      TWL4030_MODULE_KEYPAD
+#define TWL4030_MODULE_INT_PWR          TWL4030_MODULE_INT
+
+
+/* Order in this table matches order in PIH_ISR.  That is,
+ * BIT(n) in PIH_ISR is sih_modules[n].
+ */
+static const struct sih sih_modules[6] = {
+        [0] = {
+                .name           = "gpio",
+                .module         = TWL4030_MODULE_GPIO,
+                .control_offset = REG_GPIO_SIH_CTRL,
+                .set_cor        = true,
+                .bits           = TWL4030_GPIO_MAX,
+                .bytes_ixr      = 3,
+                /* Note: *all* of these IRQs default to no-trigger */
+                .edr_offset     = REG_GPIO_EDR1,
+                .bytes_edr      = 5,
+                .mask = { {
+                        .isr_offset     = REG_GPIO_ISR1A,
+                        .imr_offset     = REG_GPIO_IMR1A,
+                }, {
+                        .isr_offset     = REG_GPIO_ISR1B,
+                        .imr_offset     = REG_GPIO_IMR1B,
+                }, },
+        },
+        [1] = {
+                .name           = "keypad",
+                .set_cor        = true,
+                SIH_INITIALIZER(KEYPAD_KEYP, 4)
+        },
+        [2] = {
+                .name           = "bci",
+                .module         = TWL4030_MODULE_INTERRUPTS,
+                .control_offset = TWL4030_INTERRUPTS_BCISIHCTRL,
+                .bits           = 12,
+                .bytes_ixr      = 2,
+                .edr_offset     = TWL4030_INTERRUPTS_BCIEDR1,
+                /* Note: most of these IRQs default to no-trigger */
+                .bytes_edr      = 3,
+                .mask = { {
+                        .isr_offset     = TWL4030_INTERRUPTS_BCIISR1A,
+                        .imr_offset     = TWL4030_INTERRUPTS_BCIIMR1A,
+                }, {
+                        .isr_offset     = TWL4030_INTERRUPTS_BCIISR1B,
+                        .imr_offset     = TWL4030_INTERRUPTS_BCIIMR1B,
+                }, },
+        },
+        [3] = {
+                .name           = "madc",
+                SIH_INITIALIZER(MADC, 4)
+        },
+        [4] = {
+                /* USB doesn't use the same SIH organization */
+                .name           = "usb",
+        },
+        [5] = {
+                .name           = "power",
+                .set_cor        = true,
+                SIH_INITIALIZER(INT_PWR, 8)
+        },
+                /* there are no SIH modules #6 or #7 ... */
+};
+
+#undef TWL4030_MODULE_KEYPAD_KEYP
+#undef TWL4030_MODULE_INT_PWR
+#undef TWL4030_INT_PWR_EDR
+
+/*----------------------------------------------------------------------*/
+
+static unsigned twl4030_irq_base;
+
+static struct completion irq_event;
+
+/*
+ * This thread processes interrupts reported by the Primary Interrupt Handler.
+ */
+static int twl4030_irq_thread(void *data)
+{
+        long irq = (long)data;
+        irq_desc_t *desc = irq_desc + irq;
+        static unsigned i2c_errors;
+        const static unsigned max_i2c_errors = 100;
+
+        current->flags |= PF_NOFREEZE;
+
+        while (!kthread_should_stop()) {
+                int ret;
+                int module_irq;
+                u8 pih_isr;
+
+                /* Wait for IRQ, then read PIH irq status (also blocking) */
+                wait_for_completion_interruptible(&irq_event);
+
+                ret = twl4030_i2c_read_u8(TWL4030_MODULE_PIH, &pih_isr,
+                                          REG_PIH_ISR_P1);
+                if (ret) {
+                        pr_warning("twl4030: I2C error %d reading PIH ISR\n",
+                                        ret);
+                        if (++i2c_errors >= max_i2c_errors) {
+                                printk(KERN_ERR "Maximum I2C error count"
+                                                " exceeded.  Terminating %s.\n",
+                                                __func__);
+                                break;
+                        }
+                        complete(&irq_event);
+                        continue;
+                }
+
+                /* these handlers deal with the relevant SIH irq status */
+                local_irq_disable();
+                for (module_irq = twl4030_irq_base;
+                                pih_isr;
+                                pih_isr >>= 1, module_irq++) {
+                        if (pih_isr & 0x1) {
+                                irq_desc_t *d = irq_desc + module_irq;
+
+                                /* These can't be masked ... always warn
+                                 * if we get any surprises.
+                                 */
+                                if (d->status & IRQ_DISABLED)
+                                        note_interrupt(module_irq, d,
+                                                        IRQ_NONE);
+                                else
+                                        d->handle_irq(module_irq, d);
+                        }
+                }
+                local_irq_enable();
+
+                desc->chip->unmask(irq);
+        }
+
+        return 0;
+}
+
+/*
+ * handle_twl4030_pih() is the desc->handle method for the twl4030 interrupt.
+ * This is a chained interrupt, so there is no desc->action method for it.
+ * Now we need to query the interrupt controller in the twl4030 to determine
+ * which module is generating the interrupt request.  However, we can't do i2c
+ * transactions in interrupt context, so we must defer that work to a kernel
+ * thread.  All we do here is acknowledge and mask the interrupt and wakeup
+ * the kernel thread.
+ */
+static void handle_twl4030_pih(unsigned int irq, irq_desc_t *desc)
+{
+        /* Acknowledge, clear *AND* mask the interrupt... */
+        desc->chip->ack(irq);
+        complete(&irq_event);
+}
+
+static struct task_struct *start_twl4030_irq_thread(long irq)
+{
+        struct task_struct *thread;
+
+        init_completion(&irq_event);
+        thread = kthread_run(twl4030_irq_thread, (void *)irq, "twl4030-irq");
+        if (!thread)
+                pr_err("twl4030: could not create irq %ld thread!\n", irq);
+
+        return thread;
+}
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * twl4030_init_sih_modules() ... start from a known state where no
+ * IRQs will be coming in, and where we can quickly enable them then
+ * handle them as they arrive.  Mask all IRQs: maybe init SIH_CTRL.
+ *
+ * NOTE:  we don't touch EDR registers here; they stay with hardware
+ * defaults or whatever the last value was.  Note that when both EDR
+ * bits for an IRQ are clear, that's as if its IMR bit is set...
+ */
+static int twl4030_init_sih_modules(unsigned line)
+{
+        const struct sih *sih;
+        u8 buf[4];
+        int i;
+        int status;
+
+        /* line 0 == int1_n signal; line 1 == int2_n signal */
+        if (line > 1)
+                return -EINVAL;
+
+        irq_line = line;
+
+        /* disable all interrupts on our line */
+        memset(buf, 0xff, sizeof buf);
+        sih = sih_modules;
+        for (i = 0; i < ARRAY_SIZE(sih_modules); i++, sih++) {
+
+                /* skip USB -- it's funky */
+                if (!sih->bytes_ixr)
+                        continue;
+
+                status = twl4030_i2c_write(sih->module, buf,
+                                sih->mask[line].imr_offset, sih->bytes_ixr);
+                if (status < 0)
+                        pr_err("twl4030: err %d initializing %s %s\n",
+                                        status, sih->name, "IMR");
+
+                /* Maybe disable "exclusive" mode; buffer second pending irq;
+                 * set Clear-On-Read (COR) bit.
+                 *
+                 * NOTE that sometimes COR polarity is documented as being
+                 * inverted:  for MADC and BCI, COR=1 means "clear on write".
+                 * And for PWR_INT it's not documented...
+                 */
+                if (sih->set_cor) {
+                        status = twl4030_i2c_write_u8(sih->module,
+                                        TWL4030_SIH_CTRL_COR_MASK,
+                                        sih->control_offset);
+                        if (status < 0)
+                                pr_err("twl4030: err %d initializing %s %s\n",
+                                                status, sih->name, "SIH_CTRL");
+                }
+        }
+
+        sih = sih_modules;
+        for (i = 0; i < ARRAY_SIZE(sih_modules); i++, sih++) {
+                u8 rxbuf[4];
+                int j;
+
+                /* skip USB */
+                if (!sih->bytes_ixr)
+                        continue;
+
+                /* Clear pending interrupt status.  Either the read was
+                 * enough, or we need to write those bits.  Repeat, in
+                 * case an IRQ is pending (PENDDIS=0) ... that's not
+                 * uncommon with PWR_INT.PWRON.
+                 */
+                for (j = 0; j < 2; j++) {
+                        status = twl4030_i2c_read(sih->module, rxbuf,
+                                sih->mask[line].isr_offset, sih->bytes_ixr);
+                        if (status < 0)
+                                pr_err("twl4030: err %d initializing %s %s\n",
+                                        status, sih->name, "ISR");
+
+                        if (!sih->set_cor)
+                                status = twl4030_i2c_write(sih->module, buf,
+                                        sih->mask[line].isr_offset,
+                                        sih->bytes_ixr);
+                        /* else COR=1 means read sufficed.
+                         * (for most SIH modules...)
+                         */
+                }
+        }
+
+        return 0;
+}
+
+static inline void activate_irq(int irq)
+{
+#ifdef CONFIG_ARM
+        /* ARM requires an extra step to clear IRQ_NOREQUEST, which it
+         * sets on behalf of every irq_chip.  Also sets IRQ_NOPROBE.
+         */
+        set_irq_flags(irq, IRQF_VALID);
+#else
+        /* same effect on other architectures */
+        set_irq_noprobe(irq);
+#endif
+}
+
+/*----------------------------------------------------------------------*/
+
+static DEFINE_SPINLOCK(sih_agent_lock);
+
+static struct workqueue_struct *wq;
+
+struct sih_agent {
+        int                     irq_base;
+        const struct sih        *sih;
+
+        u32                     imr;
+        bool                    imr_change_pending;
+        struct work_struct      mask_work;
+
+        u32                     edge_change;
+        struct work_struct      edge_work;
+};
+
+static void twl4030_sih_do_mask(struct work_struct *work)
+{
+        struct sih_agent        *agent;
+        const struct sih        *sih;
+        union {
+                u8      bytes[4];
+                u32     word;
+        }                       imr;
+        int                     status;
+
+        agent = container_of(work, struct sih_agent, mask_work);
+
+        /* see what work we have */
+        spin_lock_irq(&sih_agent_lock);
+        if (agent->imr_change_pending) {
+                sih = agent->sih;
+                /* byte[0] gets overwritten as we write ... */
+                imr.word = cpu_to_le32(agent->imr << 8);
+                agent->imr_change_pending = false;
+        } else
+                sih = NULL;
+        spin_unlock_irq(&sih_agent_lock);
+        if (!sih)
+                return;
+
+        /* write the whole mask ... simpler than subsetting it */
+        status = twl4030_i2c_write(sih->module, imr.bytes,
+                        sih->mask[irq_line].imr_offset, sih->bytes_ixr);
+        if (status)
+                pr_err("twl4030: %s, %s --> %d\n", __func__,
+                                "write", status);
+}
+
+static void twl4030_sih_do_edge(struct work_struct *work)
+{
+        struct sih_agent        *agent;
+        const struct sih        *sih;
+        u8                      bytes[6];
+        u32                     edge_change;
+        int                     status;
+
+        agent = container_of(work, struct sih_agent, edge_work);
+
+        /* see what work we have */
+        spin_lock_irq(&sih_agent_lock);
+        edge_change = agent->edge_change;
+        agent->edge_change = 0;;
+        sih = edge_change ? agent->sih : NULL;
+        spin_unlock_irq(&sih_agent_lock);
+        if (!sih)
+                return;
+
+        /* Read, reserving first byte for write scratch.  Yes, this
+         * could be cached for some speedup ... but be careful about
+         * any processor on the other IRQ line, EDR registers are
+         * shared.
+         */
+        status = twl4030_i2c_read(sih->module, bytes + 1,
+                        sih->edr_offset, sih->bytes_edr);
+        if (status) {
+                pr_err("twl4030: %s, %s --> %d\n", __func__,
+                                "read", status);
+                return;
+        }
+
+        /* Modify only the bits we know must change */
+        while (edge_change) {
+                int             i = fls(edge_change) - 1;
+                struct irq_desc *d = irq_desc + i + agent->irq_base;
+                int             byte = 1 + (i >> 2);
+                int             off = (i & 0x3) * 2;
+
+                bytes[byte] &= ~(0x03 << off);
+
+                spin_lock_irq(&d->lock);
+                if (d->status & IRQ_TYPE_EDGE_RISING)
+                        bytes[byte] |= BIT(off + 1);
+                if (d->status & IRQ_TYPE_EDGE_FALLING)
+                        bytes[byte] |= BIT(off + 0);
+                spin_unlock_irq(&d->lock);
+
+                edge_change &= ~BIT(i);
+        }
+
+        /* Write */
+        status = twl4030_i2c_write(sih->module, bytes,
+                        sih->edr_offset, sih->bytes_edr);
+        if (status)
+                pr_err("twl4030: %s, %s --> %d\n", __func__,
+                                "write", status);
+}
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * All irq_chip methods get issued from code holding irq_desc[irq].lock,
+ * which can't perform the underlying I2C operations (because they sleep).
+ * So we must hand them off to a thread (workqueue) and cope with asynch
+ * completion, potentially including some re-ordering, of these requests.
+ */
+
+static void twl4030_sih_mask(unsigned irq)
+{
+        struct sih_agent *sih = get_irq_chip_data(irq);
+        unsigned long flags;
+
+        spin_lock_irqsave(&sih_agent_lock, flags);
+        sih->imr |= BIT(irq - sih->irq_base);
+        sih->imr_change_pending = true;
+        queue_work(wq, &sih->mask_work);
+        spin_unlock_irqrestore(&sih_agent_lock, flags);
+}
+
+static void twl4030_sih_unmask(unsigned irq)
+{
+        struct sih_agent *sih = get_irq_chip_data(irq);
+        unsigned long flags;
+
+        spin_lock_irqsave(&sih_agent_lock, flags);
+        sih->imr &= ~BIT(irq - sih->irq_base);
+        sih->imr_change_pending = true;
+        queue_work(wq, &sih->mask_work);
+        spin_unlock_irqrestore(&sih_agent_lock, flags);
+}
+
+static int twl4030_sih_set_type(unsigned irq, unsigned trigger)
+{
+        struct sih_agent *sih = get_irq_chip_data(irq);
+        struct irq_desc *desc = irq_desc + irq;
+        unsigned long flags;
+
+        if (trigger & ~(IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING))
+                return -EINVAL;
+
+        spin_lock_irqsave(&sih_agent_lock, flags);
+        if ((desc->status & IRQ_TYPE_SENSE_MASK) != trigger) {
+                desc->status &= ~IRQ_TYPE_SENSE_MASK;
+                desc->status |= trigger;
+                sih->edge_change |= BIT(irq - sih->irq_base);
+                queue_work(wq, &sih->edge_work);
+        }
+        spin_unlock_irqrestore(&sih_agent_lock, flags);
+        return 0;
+}
+
+static struct irq_chip twl4030_sih_irq_chip = {
+        .name           = "twl4030",
+        .mask           = twl4030_sih_mask,
+        .unmask         = twl4030_sih_unmask,
+        .set_type       = twl4030_sih_set_type,
+};
+
+/*----------------------------------------------------------------------*/
+
+static inline int sih_read_isr(const struct sih *sih)
+{
+        int status;
+        union {
+                u8 bytes[4];
+                u32 word;
+        } isr;
+
+        /* FIXME need retry-on-error ... */
+
+        isr.word = 0;
+        status = twl4030_i2c_read(sih->module, isr.bytes,
+                        sih->mask[irq_line].isr_offset, sih->bytes_ixr);
+
+        return (status < 0) ? status : le32_to_cpu(isr.word);
+}
+
+/*
+ * Generic handler for SIH interrupts ... we "know" this is called
+ * in task context, with IRQs enabled.
+ */
+static void handle_twl4030_sih(unsigned irq, struct irq_desc *desc)
+{
+        struct sih_agent *agent = get_irq_data(irq);
+        const struct sih *sih = agent->sih;
+        int isr;
+
+        /* reading ISR acks the IRQs, using clear-on-read mode */
+        local_irq_enable();
+        isr = sih_read_isr(sih);
+        local_irq_disable();
+
+        if (isr < 0) {
+                pr_err("twl4030: %s SIH, read ISR error %d\n",
+                        sih->name, isr);
+                /* REVISIT:  recover; eventually mask it all, etc */
+                return;
+        }
+
+        while (isr) {
+                irq = fls(isr);
+                irq--;
+                isr &= ~BIT(irq);
+
+                if (irq < sih->bits)
+                        generic_handle_irq(agent->irq_base + irq);
+                else
+                        pr_err("twl4030: %s SIH, invalid ISR bit %d\n",
+                                sih->name, irq);
+        }
+}
+
+static unsigned twl4030_irq_next;
+
+/* returns the first IRQ used by this SIH bank,
+ * or negative errno
+ */
+int twl4030_sih_setup(int module)
+{
+        int                     sih_mod;
+        const struct sih        *sih = NULL;
+        struct sih_agent        *agent;
+        int                     i, irq;
+        int                     status = -EINVAL;
+        unsigned                irq_base = twl4030_irq_next;
+
+        /* only support modules with standard clear-on-read for now */
+        for (sih_mod = 0, sih = sih_modules;
+                        sih_mod < ARRAY_SIZE(sih_modules);
+                        sih_mod++, sih++) {
+                if (sih->module == module && sih->set_cor) {
+                        if (!WARN((irq_base + sih->bits) > NR_IRQS,
+                                        "irq %d for %s too big\n",
+                                        irq_base + sih->bits,
+                                        sih->name))
+                                status = 0;
+                        break;
+                }
+        }
+        if (status < 0)
+                return status;
+
+        agent = kzalloc(sizeof *agent, GFP_KERNEL);
+        if (!agent)
+                return -ENOMEM;
+
+        status = 0;
+
+        agent->irq_base = irq_base;
+        agent->sih = sih;
+        agent->imr = ~0;
+        INIT_WORK(&agent->mask_work, twl4030_sih_do_mask);
+        INIT_WORK(&agent->edge_work, twl4030_sih_do_edge);
+
+        for (i = 0; i < sih->bits; i++) {
+                irq = irq_base + i;
+
+                set_irq_chip_and_handler(irq, &twl4030_sih_irq_chip,
+                                handle_edge_irq);
+                set_irq_chip_data(irq, agent);
+                activate_irq(irq);
+        }
+
+        status = irq_base;
+        twl4030_irq_next += i;
+
+        /* replace generic PIH handler (handle_simple_irq) */
+        irq = sih_mod + twl4030_irq_base;
+        set_irq_data(irq, agent);
+        set_irq_chained_handler(irq, handle_twl4030_sih);
+
+        pr_info("twl4030: %s (irq %d) chaining IRQs %d..%d\n", sih->name,
+                        irq, irq_base, twl4030_irq_next - 1);
+
+        return status;
+}
+
+/* FIXME need a call to reverse twl4030_sih_setup() ... */
+
+
+/*----------------------------------------------------------------------*/
+
+/* FIXME pass in which interrupt line we'll use ... */
+#define twl_irq_line    0
+
+int twl_init_irq(int irq_num, unsigned irq_base, unsigned irq_end)
+{
+        static struct irq_chip  twl4030_irq_chip;
+
+        int                     status;
+        int                     i;
+        struct task_struct      *task;
+
+        /*
+         * Mask and clear all TWL4030 interrupts since initially we do
+         * not have any TWL4030 module interrupt handlers present
+         */
+        status = twl4030_init_sih_modules(twl_irq_line);
+        if (status < 0)
+                return status;
+
+        wq = create_singlethread_workqueue("twl4030-irqchip");
+        if (!wq) {
+                pr_err("twl4030: workqueue FAIL\n");
+                return -ESRCH;
+        }
+
+        twl4030_irq_base = irq_base;
+
+        /* install an irq handler for each of the SIH modules;
+         * clone dummy irq_chip since PIH can't *do* anything
+         */
+        twl4030_irq_chip = dummy_irq_chip;
+        twl4030_irq_chip.name = "twl4030";
+
+        twl4030_sih_irq_chip.ack = dummy_irq_chip.ack;
+
+        for (i = irq_base; i < irq_end; i++) {
+                set_irq_chip_and_handler(i, &twl4030_irq_chip,
+                                handle_simple_irq);
+                activate_irq(i);
+        }
+        twl4030_irq_next = i;
+        pr_info("twl4030: %s (irq %d) chaining IRQs %d..%d\n", "PIH",
+                        irq_num, irq_base, twl4030_irq_next - 1);
+
+        /* ... and the PWR_INT module ... */
+        status = twl4030_sih_setup(TWL4030_MODULE_INT);
+        if (status < 0) {
+                pr_err("twl4030: sih_setup PWR INT --> %d\n", status);
+                goto fail;
+        }
+
+        /* install an irq handler to demultiplex the TWL4030 interrupt */
+        task = start_twl4030_irq_thread(irq_num);
+        if (!task) {
+                pr_err("twl4030: irq thread FAIL\n");
+                status = -ESRCH;
+                goto fail;
+        }
+
+        set_irq_data(irq_num, task);
+        set_irq_chained_handler(irq_num, handle_twl4030_pih);
+
+        return status;
+
+fail:
+        for (i = irq_base; i < irq_end; i++)
+                set_irq_chip_and_handler(i, NULL, NULL);
+        destroy_workqueue(wq);
+        wq = NULL;
+        return status;
+}
+
+int twl_exit_irq(void)
+{
+        /* FIXME undo twl_init_irq() */
+        if (twl4030_irq_base) {
+                pr_err("twl4030: can't yet clean up IRQs?\n");
+                return -ENOSYS;
+        }
+        return 0;
+}
diff --git a/drivers/mfd/wm8350-core.c b/drivers/mfd/wm8350-core.c
index bf87f675e7fa..0d47fb9e4b3b 100644
--- a/drivers/mfd/wm8350-core.c
+++ b/drivers/mfd/wm8350-core.c
@@ -183,6 +183,9 @@ static int wm8350_write(struct wm8350 *wm8350, u8 reg, int num_regs, u16 *src)
                         (wm8350->reg_cache[i] & ~wm8350_reg_io_map[i].writable)
                         | src[i - reg];
 
+                /* Don't store volatile bits */
+                wm8350->reg_cache[i] &= ~wm8350_reg_io_map[i].vol;
+
                 src[i - reg] = cpu_to_be16(src[i - reg]);
         }
 
@@ -1120,6 +1123,7 @@ static int wm8350_create_cache(struct wm8350 *wm8350, int mode)
                         }
                         value = be16_to_cpu(value);
                         value &= wm8350_reg_io_map[i].readable;
+                        value &= ~wm8350_reg_io_map[i].vol;
                         wm8350->reg_cache[i] = value;
                 } else
                         wm8350->reg_cache[i] = reg_map[i];
@@ -1128,7 +1132,6 @@ static int wm8350_create_cache(struct wm8350 *wm8350, int mode)
 out:
         return ret;
 }
-EXPORT_SYMBOL_GPL(wm8350_create_cache);
 
 /*
  * Register a client device.  This is non-fatal since there is no need to
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index ad301ace6085..0b71ebc074b6 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -464,6 +464,12 @@ config MIPS_JAZZ_SONIC
           This is the driver for the onboard card of MIPS Magnum 4000,
           Acer PICA, Olivetti M700-10 and a few other identical OEM systems.
 
+config XTENSA_XT2000_SONIC
+        tristate "Xtensa XT2000 onboard SONIC Ethernet support"
+        depends on XTENSA_PLATFORM_XT2000
+        help
+          This is the driver for the onboard card of the Xtensa XT2000 board.
+
 config MIPS_AU1X00_ENET
         bool "MIPS AU1000 Ethernet support"
         depends on SOC_AU1X00
@@ -2504,6 +2510,15 @@ config PASEMI_MAC
           This driver supports the on-chip 1/10Gbit Ethernet controller on
           PA Semi's PWRficient line of chips.
 
+config MLX4_EN
+        tristate "Mellanox Technologies 10Gbit Ethernet support"
+        depends on PCI && INET
+        select MLX4_CORE
+        select INET_LRO
+        help
+          This driver supports Mellanox Technologies ConnectX Ethernet
+          devices.
+
 config MLX4_CORE
         tristate
         depends on PCI
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index fa2510b2e609..f19acf8b9220 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -227,6 +227,8 @@ pasemi_mac_driver-objs := pasemi_mac.o pasemi_mac_ethtool.o
 obj-$(CONFIG_MLX4_CORE) += mlx4/
 obj-$(CONFIG_ENC28J60) += enc28j60.o
 
+obj-$(CONFIG_XTENSA_XT2000_SONIC) += xtsonic.o
+
 obj-$(CONFIG_MACB) += macb.o
 
 obj-$(CONFIG_ARM) += arm/
diff --git a/drivers/net/fec_mpc52xx_phy.c b/drivers/net/fec_mpc52xx_phy.c
index 08e18bcb970f..45dd9bdc5d62 100644
--- a/drivers/net/fec_mpc52xx_phy.c
+++ b/drivers/net/fec_mpc52xx_phy.c
@@ -2,6 +2,7 @@
  * Driver for the MPC5200 Fast Ethernet Controller - MDIO bus driver
  *
  * Copyright (C) 2007  Domen Puncer, Telargo, Inc.
+ * Copyright (C) 2008  Wolfram Sang, Pengutronix
  *
  * This file is licensed under the terms of the GNU General Public License
  * version 2. This program is licensed "as is" without any warranty of any
@@ -21,58 +22,45 @@ struct mpc52xx_fec_mdio_priv {
         struct mpc52xx_fec __iomem *regs;
 };
 
-static int mpc52xx_fec_mdio_read(struct mii_bus *bus, int phy_id, int reg)
+static int mpc52xx_fec_mdio_transfer(struct mii_bus *bus, int phy_id,
+                int reg, u32 value)
 {
         struct mpc52xx_fec_mdio_priv *priv = bus->priv;
         struct mpc52xx_fec __iomem *fec;
         int tries = 100;
-        u32 request = FEC_MII_READ_FRAME;
+
+        value |= (phy_id << FEC_MII_DATA_PA_SHIFT) & FEC_MII_DATA_PA_MSK;
+        value |= (reg << FEC_MII_DATA_RA_SHIFT) & FEC_MII_DATA_RA_MSK;
 
         fec = priv->regs;
         out_be32(&fec->ievent, FEC_IEVENT_MII);
-
-        request |= (phy_id << FEC_MII_DATA_PA_SHIFT) & FEC_MII_DATA_PA_MSK;
-        request |= (reg << FEC_MII_DATA_RA_SHIFT) & FEC_MII_DATA_RA_MSK;
-
-        out_be32(&priv->regs->mii_data, request);
+        out_be32(&priv->regs->mii_data, value);
 
         /* wait for it to finish, this takes about 23 us on lite5200b */
         while (!(in_be32(&fec->ievent) & FEC_IEVENT_MII) && --tries)
                 udelay(5);
 
-        if (tries == 0)
+        if (!tries)
                 return -ETIMEDOUT;
 
-        return in_be32(&priv->regs->mii_data) & FEC_MII_DATA_DATAMSK;
+        return value & FEC_MII_DATA_OP_RD ?
+                in_be32(&priv->regs->mii_data) & FEC_MII_DATA_DATAMSK : 0;
 }
 
-static int mpc52xx_fec_mdio_write(struct mii_bus *bus, int phy_id, int reg, u16 data)
+static int mpc52xx_fec_mdio_read(struct mii_bus *bus, int phy_id, int reg)
 {
-        struct mpc52xx_fec_mdio_priv *priv = bus->priv;
-        struct mpc52xx_fec __iomem *fec;
-        u32 value = data;
-        int tries = 100;
-
-        fec = priv->regs;
-        out_be32(&fec->ievent, FEC_IEVENT_MII);
-
-        value |= FEC_MII_WRITE_FRAME;
-        value |= (phy_id << FEC_MII_DATA_PA_SHIFT) & FEC_MII_DATA_PA_MSK;
-        value |= (reg << FEC_MII_DATA_RA_SHIFT) & FEC_MII_DATA_RA_MSK;
-
-        out_be32(&priv->regs->mii_data, value);
-
-        /* wait for request to finish */
-        while (!(in_be32(&fec->ievent) & FEC_IEVENT_MII) && --tries)
-                udelay(5);
-
-        if (tries == 0)
-                return -ETIMEDOUT;
+        return mpc52xx_fec_mdio_transfer(bus, phy_id, reg, FEC_MII_READ_FRAME);
+}
 
-        return 0;
+static int mpc52xx_fec_mdio_write(struct mii_bus *bus, int phy_id, int reg,
+                u16 data)
+{
+        return mpc52xx_fec_mdio_transfer(bus, phy_id, reg,
+                data | FEC_MII_WRITE_FRAME);
 }
 
-static int mpc52xx_fec_mdio_probe(struct of_device *of, const struct of_device_id *match)
+static int mpc52xx_fec_mdio_probe(struct of_device *of,
+                const struct of_device_id *match)
 {
         struct device *dev = &of->dev;
         struct device_node *np = of->node;
@@ -131,7 +119,8 @@ static int mpc52xx_fec_mdio_probe(struct of_device *of, const struct of_device_i
         dev_set_drvdata(dev, bus);
 
         /* set MII speed */
-        out_be32(&priv->regs->mii_speed, ((mpc52xx_find_ipb_freq(of->node) >> 20) / 5) << 1);
+        out_be32(&priv->regs->mii_speed,
+                ((mpc52xx_find_ipb_freq(of->node) >> 20) / 5) << 1);
 
         /* enable MII interrupt */
         out_be32(&priv->regs->imask, in_be32(&priv->regs->imask) | FEC_IMASK_MII);
diff --git a/drivers/net/ibm_newemac/core.c b/drivers/net/ibm_newemac/core.c
index efcf21c9f5c7..2ee2622258f5 100644
--- a/drivers/net/ibm_newemac/core.c
+++ b/drivers/net/ibm_newemac/core.c
@@ -2604,8 +2604,16 @@ static int __devinit emac_init_config(struct emac_instance *dev)
                 if (of_device_is_compatible(np, "ibm,emac-440ep") ||
                     of_device_is_compatible(np, "ibm,emac-440gr"))
                         dev->features |= EMAC_FTR_440EP_PHY_CLK_FIX;
-                if (of_device_is_compatible(np, "ibm,emac-405ez"))
+                if (of_device_is_compatible(np, "ibm,emac-405ez")) {
+#ifdef CONFIG_IBM_NEW_EMAC_NO_FLOW_CONTROL
                         dev->features |= EMAC_FTR_NO_FLOW_CONTROL_40x;
+#else
+                        printk(KERN_ERR "%s: Flow control not disabled!\n",
+                                        np->full_name);
+                        return -ENXIO;
+#endif
+                }
+
         }
 
         /* Fixup some feature bits based on the device tree */
diff --git a/drivers/net/ibm_newemac/mal.c b/drivers/net/ibm_newemac/mal.c
index 1839d3f154a3..ecf9798987fa 100644
--- a/drivers/net/ibm_newemac/mal.c
+++ b/drivers/net/ibm_newemac/mal.c
@@ -280,9 +280,11 @@ static irqreturn_t mal_txeob(int irq, void *dev_instance)
         mal_schedule_poll(mal);
         set_mal_dcrn(mal, MAL_TXEOBISR, r);
 
+#ifdef CONFIG_PPC_DCR_NATIVE
         if (mal_has_feature(mal, MAL_FTR_CLEAR_ICINTSTAT))
                 mtdcri(SDR0, DCRN_SDR_ICINTSTAT,
                                 (mfdcri(SDR0, DCRN_SDR_ICINTSTAT) | ICINTSTAT_ICTX));
+#endif
 
         return IRQ_HANDLED;
 }
@@ -298,9 +300,11 @@ static irqreturn_t mal_rxeob(int irq, void *dev_instance)
         mal_schedule_poll(mal);
         set_mal_dcrn(mal, MAL_RXEOBISR, r);
 
+#ifdef CONFIG_PPC_DCR_NATIVE
         if (mal_has_feature(mal, MAL_FTR_CLEAR_ICINTSTAT))
                 mtdcri(SDR0, DCRN_SDR_ICINTSTAT,
                                 (mfdcri(SDR0, DCRN_SDR_ICINTSTAT) | ICINTSTAT_ICRX));
+#endif
 
         return IRQ_HANDLED;
 }
@@ -572,9 +576,18 @@ static int __devinit mal_probe(struct of_device *ofdev,
                 goto fail;
         }
 
-        if (of_device_is_compatible(ofdev->node, "ibm,mcmal-405ez"))
+        if (of_device_is_compatible(ofdev->node, "ibm,mcmal-405ez")) {
+#if defined(CONFIG_IBM_NEW_EMAC_MAL_CLR_ICINTSTAT) && \
+                defined(CONFIG_IBM_NEW_EMAC_MAL_COMMON_ERR)
                 mal->features |= (MAL_FTR_CLEAR_ICINTSTAT |
                                 MAL_FTR_COMMON_ERR_INT);
+#else
+                printk(KERN_ERR "%s: Support for 405EZ not enabled!\n",
+                                ofdev->node->full_name);
+                err = -ENODEV;
+                goto fail;
+#endif
+        }
 
         mal->txeob_irq = irq_of_parse_and_map(ofdev->node, 0);
         mal->rxeob_irq = irq_of_parse_and_map(ofdev->node, 1);
diff --git a/drivers/net/mlx4/Makefile b/drivers/net/mlx4/Makefile
index 0952a6528f58..a7a97bf998f8 100644
--- a/drivers/net/mlx4/Makefile
+++ b/drivers/net/mlx4/Makefile
@@ -1,4 +1,9 @@
 obj-$(CONFIG_MLX4_CORE)         += mlx4_core.o
 
 mlx4_core-y :=  alloc.o catas.o cmd.o cq.o eq.o fw.o icm.o intf.o main.o mcg.o \
-                mr.o pd.o profile.o qp.o reset.o srq.o
+                mr.o pd.o port.o profile.o qp.o reset.o srq.o
+
+obj-$(CONFIG_MLX4_EN)               += mlx4_en.o
+
+mlx4_en-y :=    en_main.o en_tx.o en_rx.o en_params.o en_port.o en_cq.o \
+                en_resources.o en_netdev.o
diff --git a/drivers/net/mlx4/alloc.c b/drivers/net/mlx4/alloc.c
index b411b79d72ad..ad95d5f7b630 100644
--- a/drivers/net/mlx4/alloc.c
+++ b/drivers/net/mlx4/alloc.c
@@ -48,13 +48,16 @@ u32 mlx4_bitmap_alloc(struct mlx4_bitmap *bitmap)
 
         obj = find_next_zero_bit(bitmap->table, bitmap->max, bitmap->last);
         if (obj >= bitmap->max) {
-                bitmap->top = (bitmap->top + bitmap->max) & bitmap->mask;
+                bitmap->top = (bitmap->top + bitmap->max + bitmap->reserved_top)
+                                & bitmap->mask;
                 obj = find_first_zero_bit(bitmap->table, bitmap->max);
         }
 
         if (obj < bitmap->max) {
                 set_bit(obj, bitmap->table);
-                bitmap->last = (obj + 1) & (bitmap->max - 1);
+                bitmap->last = (obj + 1);
+                if (bitmap->last == bitmap->max)
+                        bitmap->last = 0;
                 obj |= bitmap->top;
         } else
                 obj = -1;
@@ -66,16 +69,90 @@ u32 mlx4_bitmap_alloc(struct mlx4_bitmap *bitmap)
 
 void mlx4_bitmap_free(struct mlx4_bitmap *bitmap, u32 obj)
 {
-        obj &= bitmap->max - 1;
+        mlx4_bitmap_free_range(bitmap, obj, 1);
+}
+
+static unsigned long find_aligned_range(unsigned long *bitmap,
+                                        u32 start, u32 nbits,
+                                        int len, int align)
+{
+        unsigned long end, i;
+
+again:
+        start = ALIGN(start, align);
+
+        while ((start < nbits) && test_bit(start, bitmap))
+                start += align;
+
+        if (start >= nbits)
+                return -1;
+
+        end = start+len;
+        if (end > nbits)
+                return -1;
+
+        for (i = start + 1; i < end; i++) {
+                if (test_bit(i, bitmap)) {
+                        start = i + 1;
+                        goto again;
+                }
+        }
+
+        return start;
+}
+
+u32 mlx4_bitmap_alloc_range(struct mlx4_bitmap *bitmap, int cnt, int align)
+{
+        u32 obj, i;
+
+        if (likely(cnt == 1 && align == 1))
+                return mlx4_bitmap_alloc(bitmap);
+
+        spin_lock(&bitmap->lock);
+
+        obj = find_aligned_range(bitmap->table, bitmap->last,
+                                 bitmap->max, cnt, align);
+        if (obj >= bitmap->max) {
+                bitmap->top = (bitmap->top + bitmap->max + bitmap->reserved_top)
+                                & bitmap->mask;
+                obj = find_aligned_range(bitmap->table, 0, bitmap->max,
+                                         cnt, align);
+        }
+
+        if (obj < bitmap->max) {
+                for (i = 0; i < cnt; i++)
+                        set_bit(obj + i, bitmap->table);
+                if (obj == bitmap->last) {
+                        bitmap->last = (obj + cnt);
+                        if (bitmap->last >= bitmap->max)
+                                bitmap->last = 0;
+                }
+                obj |= bitmap->top;
+        } else
+                obj = -1;
+
+        spin_unlock(&bitmap->lock);
+
+        return obj;
+}
+
+void mlx4_bitmap_free_range(struct mlx4_bitmap *bitmap, u32 obj, int cnt)
+{
+        u32 i;
+
+        obj &= bitmap->max + bitmap->reserved_top - 1;
 
         spin_lock(&bitmap->lock);
-        clear_bit(obj, bitmap->table);
+        for (i = 0; i < cnt; i++)
+                clear_bit(obj + i, bitmap->table);
         bitmap->last = min(bitmap->last, obj);
-        bitmap->top = (bitmap->top + bitmap->max) & bitmap->mask;
+        bitmap->top = (bitmap->top + bitmap->max + bitmap->reserved_top)
+                        & bitmap->mask;
         spin_unlock(&bitmap->lock);
 }
 
-int mlx4_bitmap_init(struct mlx4_bitmap *bitmap, u32 num, u32 mask, u32 reserved)
+int mlx4_bitmap_init(struct mlx4_bitmap *bitmap, u32 num, u32 mask,
+                     u32 reserved_bot, u32 reserved_top)
 {
         int i;
 
@@ -85,14 +162,16 @@ int mlx4_bitmap_init(struct mlx4_bitmap *bitmap, u32 num, u32 mask, u32 reserved
 
         bitmap->last = 0;
         bitmap->top  = 0;
-        bitmap->max  = num;
+        bitmap->max  = num - reserved_top;
         bitmap->mask = mask;
+        bitmap->reserved_top = reserved_top;
         spin_lock_init(&bitmap->lock);
-        bitmap->table = kzalloc(BITS_TO_LONGS(num) * sizeof (long), GFP_KERNEL);
+        bitmap->table = kzalloc(BITS_TO_LONGS(bitmap->max) *
+                                sizeof (long), GFP_KERNEL);
         if (!bitmap->table)
                 return -ENOMEM;
 
-        for (i = 0; i < reserved; ++i)
+        for (i = 0; i < reserved_bot; ++i)
                 set_bit(i, bitmap->table);
 
         return 0;
diff --git a/drivers/net/mlx4/cq.c b/drivers/net/mlx4/cq.c
index 9bb50e3f8974..b7ad2829d67e 100644
--- a/drivers/net/mlx4/cq.c
+++ b/drivers/net/mlx4/cq.c
@@ -300,7 +300,7 @@ int mlx4_init_cq_table(struct mlx4_dev *dev)
         INIT_RADIX_TREE(&cq_table->tree, GFP_ATOMIC);
 
         err = mlx4_bitmap_init(&cq_table->bitmap, dev->caps.num_cqs,
-                               dev->caps.num_cqs - 1, dev->caps.reserved_cqs);
+                               dev->caps.num_cqs - 1, dev->caps.reserved_cqs, 0);
         if (err)
                 return err;
 
diff --git a/drivers/net/mlx4/en_cq.c b/drivers/net/mlx4/en_cq.c
new file mode 100644
index 000000000000..1368a8010af4
--- /dev/null
+++ b/drivers/net/mlx4/en_cq.c
@@ -0,0 +1,146 @@
+/*
+ * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#include <linux/mlx4/cq.h>
+#include <linux/mlx4/qp.h>
+#include <linux/mlx4/cmd.h>
+
+#include "mlx4_en.h"
+
+static void mlx4_en_cq_event(struct mlx4_cq *cq, enum mlx4_event event)
+{
+        return;
+}
+
+
+int mlx4_en_create_cq(struct mlx4_en_priv *priv,
+                      struct mlx4_en_cq *cq,
+                      int entries, int ring, enum cq_type mode)
+{
+        struct mlx4_en_dev *mdev = priv->mdev;
+        int err;
+
+        cq->size = entries;
+        if (mode == RX)
+                cq->buf_size = cq->size * sizeof(struct mlx4_cqe);
+        else
+                cq->buf_size = sizeof(struct mlx4_cqe);
+
+        cq->ring = ring;
+        cq->is_tx = mode;
+        spin_lock_init(&cq->lock);
+
+        err = mlx4_alloc_hwq_res(mdev->dev, &cq->wqres,
+                                cq->buf_size, 2 * PAGE_SIZE);
+        if (err)
+                return err;
+
+        err = mlx4_en_map_buffer(&cq->wqres.buf);
+        if (err)
+                mlx4_free_hwq_res(mdev->dev, &cq->wqres, cq->buf_size);
+
+        return err;
+}
+
+int mlx4_en_activate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq)
+{
+        struct mlx4_en_dev *mdev = priv->mdev;
+        int err;
+
+        cq->dev = mdev->pndev[priv->port];
+        cq->mcq.set_ci_db  = cq->wqres.db.db;
+        cq->mcq.arm_db     = cq->wqres.db.db + 1;
+        *cq->mcq.set_ci_db = 0;
+        *cq->mcq.arm_db    = 0;
+        cq->buf = (struct mlx4_cqe *) cq->wqres.buf.direct.buf;
+        memset(cq->buf, 0, cq->buf_size);
+
+        err = mlx4_cq_alloc(mdev->dev, cq->size, &cq->wqres.mtt, &mdev->priv_uar,
+                            cq->wqres.db.dma, &cq->mcq, cq->is_tx);
+        if (err)
+                return err;
+
+        cq->mcq.comp  = cq->is_tx ? mlx4_en_tx_irq : mlx4_en_rx_irq;
+        cq->mcq.event = mlx4_en_cq_event;
+
+        if (cq->is_tx) {
+                init_timer(&cq->timer);
+                cq->timer.function = mlx4_en_poll_tx_cq;
+                cq->timer.data = (unsigned long) cq;
+        } else {
+                netif_napi_add(cq->dev, &cq->napi, mlx4_en_poll_rx_cq, 64);
+                napi_enable(&cq->napi);
+        }
+
+        return 0;
+}
+
+void mlx4_en_destroy_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq)
+{
+        struct mlx4_en_dev *mdev = priv->mdev;
+
+        mlx4_en_unmap_buffer(&cq->wqres.buf);
+        mlx4_free_hwq_res(mdev->dev, &cq->wqres, cq->buf_size);
+        cq->buf_size = 0;
+        cq->buf = NULL;
+}
+
+void mlx4_en_deactivate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq)
+{
+        struct mlx4_en_dev *mdev = priv->mdev;
+
+        if (cq->is_tx)
+                del_timer(&cq->timer);
+        else
+                napi_disable(&cq->napi);
+
+        mlx4_cq_free(mdev->dev, &cq->mcq);
+}
+
+/* Set rx cq moderation parameters */
+int mlx4_en_set_cq_moder(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq)
+{
+        return mlx4_cq_modify(priv->mdev->dev, &cq->mcq,
+                              cq->moder_cnt, cq->moder_time);
+}
+
+int mlx4_en_arm_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq)
+{
+        cq->armed = 1;
+        mlx4_cq_arm(&cq->mcq, MLX4_CQ_DB_REQ_NOT, priv->mdev->uar_map,
+                    &priv->mdev->uar_lock);
+
+        return 0;
+}
+
+
diff --git a/drivers/net/mlx4/en_main.c b/drivers/net/mlx4/en_main.c
new file mode 100644
index 000000000000..1b0eebf84f76
--- /dev/null
+++ b/drivers/net/mlx4/en_main.c
@@ -0,0 +1,254 @@
+/*
+ * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#include <linux/cpumask.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <linux/cpumask.h>
+
+#include <linux/mlx4/driver.h>
+#include <linux/mlx4/device.h>
+#include <linux/mlx4/cmd.h>
+
+#include "mlx4_en.h"
+
+MODULE_AUTHOR("Liran Liss, Yevgeny Petrilin");
+MODULE_DESCRIPTION("Mellanox ConnectX HCA Ethernet driver");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_VERSION(DRV_VERSION " ("DRV_RELDATE")");
+
+static const char mlx4_en_version[] =
+        DRV_NAME ": Mellanox ConnectX HCA Ethernet driver v"
+        DRV_VERSION " (" DRV_RELDATE ")\n";
+
+static void mlx4_en_event(struct mlx4_dev *dev, void *endev_ptr,
+                          enum mlx4_dev_event event, int port)
+{
+        struct mlx4_en_dev *mdev = (struct mlx4_en_dev *) endev_ptr;
+        struct mlx4_en_priv *priv;
+
+        if (!mdev->pndev[port])
+                return;
+
+        priv = netdev_priv(mdev->pndev[port]);
+        switch (event) {
+        case MLX4_DEV_EVENT_PORT_UP:
+        case MLX4_DEV_EVENT_PORT_DOWN:
+                /* To prevent races, we poll the link state in a separate
+                  task rather than changing it here */
+                priv->link_state = event;
+                queue_work(mdev->workqueue, &priv->linkstate_task);
+                break;
+
+        case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
+                mlx4_err(mdev, "Internal error detected, restarting device\n");
+                break;
+
+        default:
+                mlx4_warn(mdev, "Unhandled event: %d\n", event);
+        }
+}
+
+static void mlx4_en_remove(struct mlx4_dev *dev, void *endev_ptr)
+{
+        struct mlx4_en_dev *mdev = endev_ptr;
+        int i;
+
+        mutex_lock(&mdev->state_lock);
+        mdev->device_up = false;
+        mutex_unlock(&mdev->state_lock);
+
+        mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
+                if (mdev->pndev[i])
+                        mlx4_en_destroy_netdev(mdev->pndev[i]);
+
+        flush_workqueue(mdev->workqueue);
+        destroy_workqueue(mdev->workqueue);
+        mlx4_mr_free(dev, &mdev->mr);
+        mlx4_uar_free(dev, &mdev->priv_uar);
+        mlx4_pd_free(dev, mdev->priv_pdn);
+        kfree(mdev);
+}
+
+static void *mlx4_en_add(struct mlx4_dev *dev)
+{
+        static int mlx4_en_version_printed;
+        struct mlx4_en_dev *mdev;
+        int i;
+        int err;
+
+        if (!mlx4_en_version_printed) {
+                printk(KERN_INFO "%s", mlx4_en_version);
+                mlx4_en_version_printed++;
+        }
+
+        mdev = kzalloc(sizeof *mdev, GFP_KERNEL);
+        if (!mdev) {
+                dev_err(&dev->pdev->dev, "Device struct alloc failed, "
+                        "aborting.\n");
+                err = -ENOMEM;
+                goto err_free_res;
+        }
+
+        if (mlx4_pd_alloc(dev, &mdev->priv_pdn))
+                goto err_free_dev;
+
+        if (mlx4_uar_alloc(dev, &mdev->priv_uar))
+                goto err_pd;
+
+        mdev->uar_map = ioremap(mdev->priv_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
+        if (!mdev->uar_map)
+                goto err_uar;
+        spin_lock_init(&mdev->uar_lock);
+
+        mdev->dev = dev;
+        mdev->dma_device = &(dev->pdev->dev);
+        mdev->pdev = dev->pdev;
+        mdev->device_up = false;
+
+        mdev->LSO_support = !!(dev->caps.flags & (1 << 15));
+        if (!mdev->LSO_support)
+                mlx4_warn(mdev, "LSO not supported, please upgrade to later "
+                                "FW version to enable LSO\n");
+
+        if (mlx4_mr_alloc(mdev->dev, mdev->priv_pdn, 0, ~0ull,
+                         MLX4_PERM_LOCAL_WRITE |  MLX4_PERM_LOCAL_READ,
+                         0, 0, &mdev->mr)) {
+                mlx4_err(mdev, "Failed allocating memory region\n");
+                goto err_uar;
+        }
+        if (mlx4_mr_enable(mdev->dev, &mdev->mr)) {
+                mlx4_err(mdev, "Failed enabling memory region\n");
+                goto err_mr;
+        }
+
+        /* Build device profile according to supplied module parameters */
+        err = mlx4_en_get_profile(mdev);
+        if (err) {
+                mlx4_err(mdev, "Bad module parameters, aborting.\n");
+                goto err_mr;
+        }
+
+        /* Configure wich ports to start according to module parameters */
+        mdev->port_cnt = 0;
+        mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
+                mdev->port_cnt++;
+
+        /* If we did not receive an explicit number of Rx rings, default to
+         * the number of completion vectors populated by the mlx4_core */
+        mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
+                mlx4_info(mdev, "Using %d tx rings for port:%d\n",
+                          mdev->profile.prof[i].tx_ring_num, i);
+                if (!mdev->profile.prof[i].rx_ring_num) {
+                        mdev->profile.prof[i].rx_ring_num = 1;
+                        mlx4_info(mdev, "Defaulting to %d rx rings for port:%d\n",
+                                  1, i);
+                } else
+                        mlx4_info(mdev, "Using %d rx rings for port:%d\n",
+                                  mdev->profile.prof[i].rx_ring_num, i);
+        }
+
+        /* Create our own workqueue for reset/multicast tasks
+         * Note: we cannot use the shared workqueue because of deadlocks caused
+         *       by the rtnl lock */
+        mdev->workqueue = create_singlethread_workqueue("mlx4_en");
+        if (!mdev->workqueue) {
+                err = -ENOMEM;
+                goto err_close_nic;
+        }
+
+        /* At this stage all non-port specific tasks are complete:
+         * mark the card state as up */
+        mutex_init(&mdev->state_lock);
+        mdev->device_up = true;
+
+        /* Setup ports */
+
+        /* Create a netdev for each port */
+        mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
+                mlx4_info(mdev, "Activating port:%d\n", i);
+                if (mlx4_en_init_netdev(mdev, i, &mdev->profile.prof[i])) {
+                        mdev->pndev[i] = NULL;
+                        goto err_free_netdev;
+                }
+        }
+        return mdev;
+
+
+err_free_netdev:
+        mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
+                if (mdev->pndev[i])
+                        mlx4_en_destroy_netdev(mdev->pndev[i]);
+        }
+
+        mutex_lock(&mdev->state_lock);
+        mdev->device_up = false;
+        mutex_unlock(&mdev->state_lock);
+        flush_workqueue(mdev->workqueue);
+
+        /* Stop event queue before we drop down to release shared SW state */
+
+err_close_nic:
+        destroy_workqueue(mdev->workqueue);
+err_mr:
+        mlx4_mr_free(dev, &mdev->mr);
+err_uar:
+        mlx4_uar_free(dev, &mdev->priv_uar);
+err_pd:
+        mlx4_pd_free(dev, mdev->priv_pdn);
+err_free_dev:
+        kfree(mdev);
+err_free_res:
+        return NULL;
+}
+
+static struct mlx4_interface mlx4_en_interface = {
+        .add    = mlx4_en_add,
+        .remove = mlx4_en_remove,
+        .event  = mlx4_en_event,
+};
+
+static int __init mlx4_en_init(void)
+{
+        return mlx4_register_interface(&mlx4_en_interface);
+}
+
+static void __exit mlx4_en_cleanup(void)
+{
+        mlx4_unregister_interface(&mlx4_en_interface);
+}
+
+module_init(mlx4_en_init);
+module_exit(mlx4_en_cleanup);
+
diff --git a/drivers/net/mlx4/en_netdev.c b/drivers/net/mlx4/en_netdev.c
new file mode 100644
index 000000000000..a339afbeed38
--- /dev/null
+++ b/drivers/net/mlx4/en_netdev.c
@@ -0,0 +1,1088 @@
+/*
+ * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#include <linux/etherdevice.h>
+#include <linux/tcp.h>
+#include <linux/if_vlan.h>
+#include <linux/delay.h>
+
+#include <linux/mlx4/driver.h>
+#include <linux/mlx4/device.h>
+#include <linux/mlx4/cmd.h>
+#include <linux/mlx4/cq.h>
+
+#include "mlx4_en.h"
+#include "en_port.h"
+
+
+static void mlx4_en_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        struct mlx4_en_dev *mdev = priv->mdev;
+        int err;
+
+        mlx4_dbg(HW, priv, "Registering VLAN group:%p\n", grp);
+        priv->vlgrp = grp;
+
+        mutex_lock(&mdev->state_lock);
+        if (mdev->device_up && priv->port_up) {
+                err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, grp);
+                if (err)
+                        mlx4_err(mdev, "Failed configuring VLAN filter\n");
+        }
+        mutex_unlock(&mdev->state_lock);
+}
+
+static void mlx4_en_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        struct mlx4_en_dev *mdev = priv->mdev;
+        int err;
+
+        if (!priv->vlgrp)
+                return;
+
+        mlx4_dbg(HW, priv, "adding VLAN:%d (vlgrp entry:%p)\n",
+                 vid, vlan_group_get_device(priv->vlgrp, vid));
+
+        /* Add VID to port VLAN filter */
+        mutex_lock(&mdev->state_lock);
+        if (mdev->device_up && priv->port_up) {
+                err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, priv->vlgrp);
+                if (err)
+                        mlx4_err(mdev, "Failed configuring VLAN filter\n");
+        }
+        mutex_unlock(&mdev->state_lock);
+}
+
+static void mlx4_en_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        struct mlx4_en_dev *mdev = priv->mdev;
+        int err;
+
+        if (!priv->vlgrp)
+                return;
+
+        mlx4_dbg(HW, priv, "Killing VID:%d (vlgrp:%p vlgrp "
+                 "entry:%p)\n", vid, priv->vlgrp,
+                 vlan_group_get_device(priv->vlgrp, vid));
+        vlan_group_set_device(priv->vlgrp, vid, NULL);
+
+        /* Remove VID from port VLAN filter */
+        mutex_lock(&mdev->state_lock);
+        if (mdev->device_up && priv->port_up) {
+                err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, priv->vlgrp);
+                if (err)
+                        mlx4_err(mdev, "Failed configuring VLAN filter\n");
+        }
+        mutex_unlock(&mdev->state_lock);
+}
+
+static u64 mlx4_en_mac_to_u64(u8 *addr)
+{
+        u64 mac = 0;
+        int i;
+
+        for (i = 0; i < ETH_ALEN; i++) {
+                mac <<= 8;
+                mac |= addr[i];
+        }
+        return mac;
+}
+
+static int mlx4_en_set_mac(struct net_device *dev, void *addr)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        struct mlx4_en_dev *mdev = priv->mdev;
+        struct sockaddr *saddr = addr;
+
+        if (!is_valid_ether_addr(saddr->sa_data))
+                return -EADDRNOTAVAIL;
+
+        memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
+        priv->mac = mlx4_en_mac_to_u64(dev->dev_addr);
+        queue_work(mdev->workqueue, &priv->mac_task);
+        return 0;
+}
+
+static void mlx4_en_do_set_mac(struct work_struct *work)
+{
+        struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
+                                                 mac_task);
+        struct mlx4_en_dev *mdev = priv->mdev;
+        int err = 0;
+
+        mutex_lock(&mdev->state_lock);
+        if (priv->port_up) {
+                /* Remove old MAC and insert the new one */
+                mlx4_unregister_mac(mdev->dev, priv->port, priv->mac_index);
+                err = mlx4_register_mac(mdev->dev, priv->port,
+                                        priv->mac, &priv->mac_index);
+                if (err)
+                        mlx4_err(mdev, "Failed changing HW MAC address\n");
+        } else
+                mlx4_dbg(HW, priv, "Port is down, exiting...\n");
+
+        mutex_unlock(&mdev->state_lock);
+}
+
+static void mlx4_en_clear_list(struct net_device *dev)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        struct dev_mc_list *plist = priv->mc_list;
+        struct dev_mc_list *next;
+
+        while (plist) {
+                next = plist->next;
+                kfree(plist);
+                plist = next;
+        }
+        priv->mc_list = NULL;
+}
+
+static void mlx4_en_cache_mclist(struct net_device *dev)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        struct mlx4_en_dev *mdev = priv->mdev;
+        struct dev_mc_list *mclist;
+        struct dev_mc_list *tmp;
+        struct dev_mc_list *plist = NULL;
+
+        for (mclist = dev->mc_list; mclist; mclist = mclist->next) {
+                tmp = kmalloc(sizeof(struct dev_mc_list), GFP_ATOMIC);
+                if (!tmp) {
+                        mlx4_err(mdev, "failed to allocate multicast list\n");
+                        mlx4_en_clear_list(dev);
+                        return;
+                }
+                memcpy(tmp, mclist, sizeof(struct dev_mc_list));
+                tmp->next = NULL;
+                if (plist)
+                        plist->next = tmp;
+                else
+                        priv->mc_list = tmp;
+                plist = tmp;
+        }
+}
+
+
+static void mlx4_en_set_multicast(struct net_device *dev)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+
+        if (!priv->port_up)
+                return;
+
+        queue_work(priv->mdev->workqueue, &priv->mcast_task);
+}
+
+static void mlx4_en_do_set_multicast(struct work_struct *work)
+{
+        struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
+                                                 mcast_task);
+        struct mlx4_en_dev *mdev = priv->mdev;
+        struct net_device *dev = priv->dev;
+        struct dev_mc_list *mclist;
+        u64 mcast_addr = 0;
+        int err;
+
+        mutex_lock(&mdev->state_lock);
+        if (!mdev->device_up) {
+                mlx4_dbg(HW, priv, "Card is not up, ignoring "
+                                   "multicast change.\n");
+                goto out;
+        }
+        if (!priv->port_up) {
+                mlx4_dbg(HW, priv, "Port is down, ignoring "
+                                   "multicast change.\n");
+                goto out;
+        }
+
+        /*
+         * Promsicuous mode: disable all filters
+         */
+
+        if (dev->flags & IFF_PROMISC) {
+                if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
+                        if (netif_msg_rx_status(priv))
+                                mlx4_warn(mdev, "Port:%d entering promiscuous mode\n",
+                                          priv->port);
+                        priv->flags |= MLX4_EN_FLAG_PROMISC;
+
+                        /* Enable promiscouos mode */
+                        err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port,
+                                                     priv->base_qpn, 1);
+                        if (err)
+                                mlx4_err(mdev, "Failed enabling "
+                                         "promiscous mode\n");
+
+                        /* Disable port multicast filter (unconditionally) */
+                        err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
+                                                  0, MLX4_MCAST_DISABLE);
+                        if (err)
+                                mlx4_err(mdev, "Failed disabling "
+                                         "multicast filter\n");
+
+                        /* Disable port VLAN filter */
+                        err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, NULL);
+                        if (err)
+                                mlx4_err(mdev, "Failed disabling "
+                                         "VLAN filter\n");
+                }
+                goto out;
+        }
+
+        /*
+         * Not in promiscous mode
+         */
+
+        if (priv->flags & MLX4_EN_FLAG_PROMISC) {
+                if (netif_msg_rx_status(priv))
+                        mlx4_warn(mdev, "Port:%d leaving promiscuous mode\n",
+                                  priv->port);
+                priv->flags &= ~MLX4_EN_FLAG_PROMISC;
+
+                /* Disable promiscouos mode */
+                err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port,
+                                             priv->base_qpn, 0);
+                if (err)
+                        mlx4_err(mdev, "Failed disabling promiscous mode\n");
+
+                /* Enable port VLAN filter */
+                err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, priv->vlgrp);
+                if (err)
+                        mlx4_err(mdev, "Failed enabling VLAN filter\n");
+        }
+
+        /* Enable/disable the multicast filter according to IFF_ALLMULTI */
+        if (dev->flags & IFF_ALLMULTI) {
+                err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
+                                          0, MLX4_MCAST_DISABLE);
+                if (err)
+                        mlx4_err(mdev, "Failed disabling multicast filter\n");
+        } else {
+                err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
+                                          0, MLX4_MCAST_DISABLE);
+                if (err)
+                        mlx4_err(mdev, "Failed disabling multicast filter\n");
+
+                /* Flush mcast filter and init it with broadcast address */
+                mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
+                                    1, MLX4_MCAST_CONFIG);
+
+                /* Update multicast list - we cache all addresses so they won't
+                 * change while HW is updated holding the command semaphor */
+                netif_tx_lock_bh(dev);
+                mlx4_en_cache_mclist(dev);
+                netif_tx_unlock_bh(dev);
+                for (mclist = priv->mc_list; mclist; mclist = mclist->next) {
+                        mcast_addr = mlx4_en_mac_to_u64(mclist->dmi_addr);
+                        mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
+                                            mcast_addr, 0, MLX4_MCAST_CONFIG);
+                }
+                err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
+                                          0, MLX4_MCAST_ENABLE);
+                if (err)
+                        mlx4_err(mdev, "Failed enabling multicast filter\n");
+
+                mlx4_en_clear_list(dev);
+        }
+out:
+        mutex_unlock(&mdev->state_lock);
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void mlx4_en_netpoll(struct net_device *dev)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        struct mlx4_en_cq *cq;
+        unsigned long flags;
+        int i;
+
+        for (i = 0; i < priv->rx_ring_num; i++) {
+                cq = &priv->rx_cq[i];
+                spin_lock_irqsave(&cq->lock, flags);
+                napi_synchronize(&cq->napi);
+                mlx4_en_process_rx_cq(dev, cq, 0);
+                spin_unlock_irqrestore(&cq->lock, flags);
+        }
+}
+#endif
+
+static void mlx4_en_tx_timeout(struct net_device *dev)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        struct mlx4_en_dev *mdev = priv->mdev;
+
+        if (netif_msg_timer(priv))
+                mlx4_warn(mdev, "Tx timeout called on port:%d\n", priv->port);
+
+        if (netif_carrier_ok(dev)) {
+                priv->port_stats.tx_timeout++;
+                mlx4_dbg(DRV, priv, "Scheduling watchdog\n");
+                queue_work(mdev->workqueue, &priv->watchdog_task);
+        }
+}
+
+
+static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+
+        spin_lock_bh(&priv->stats_lock);
+        memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats));
+        spin_unlock_bh(&priv->stats_lock);
+
+        return &priv->ret_stats;
+}
+
+static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
+{
+        struct mlx4_en_dev *mdev = priv->mdev;
+        struct mlx4_en_cq *cq;
+        int i;
+
+        /* If we haven't received a specific coalescing setting
+         * (module param), we set the moderation paramters as follows:
+         * - moder_cnt is set to the number of mtu sized packets to
+         *   satisfy our coelsing target.
+         * - moder_time is set to a fixed value.
+         */
+        priv->rx_frames = (mdev->profile.rx_moder_cnt ==
+                           MLX4_EN_AUTO_CONF) ?
+                                MLX4_EN_RX_COAL_TARGET /
+                                priv->dev->mtu + 1 :
+                                mdev->profile.rx_moder_cnt;
+        priv->rx_usecs = (mdev->profile.rx_moder_time ==
+                          MLX4_EN_AUTO_CONF) ?
+                                MLX4_EN_RX_COAL_TIME :
+                                mdev->profile.rx_moder_time;
+        mlx4_dbg(INTR, priv, "Default coalesing params for mtu:%d - "
+                             "rx_frames:%d rx_usecs:%d\n",
+                 priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
+
+        /* Setup cq moderation params */
+        for (i = 0; i < priv->rx_ring_num; i++) {
+                cq = &priv->rx_cq[i];
+                cq->moder_cnt = priv->rx_frames;
+                cq->moder_time = priv->rx_usecs;
+        }
+
+        for (i = 0; i < priv->tx_ring_num; i++) {
+                cq = &priv->tx_cq[i];
+                cq->moder_cnt = MLX4_EN_TX_COAL_PKTS;
+                cq->moder_time = MLX4_EN_TX_COAL_TIME;
+        }
+
+        /* Reset auto-moderation params */
+        priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
+        priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
+        priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
+        priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
+        priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
+        priv->adaptive_rx_coal = mdev->profile.auto_moder;
+        priv->last_moder_time = MLX4_EN_AUTO_CONF;
+        priv->last_moder_jiffies = 0;
+        priv->last_moder_packets = 0;
+        priv->last_moder_tx_packets = 0;
+        priv->last_moder_bytes = 0;
+}
+
+static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
+{
+        unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
+        struct mlx4_en_dev *mdev = priv->mdev;
+        struct mlx4_en_cq *cq;
+        unsigned long packets;
+        unsigned long rate;
+        unsigned long avg_pkt_size;
+        unsigned long rx_packets;
+        unsigned long rx_bytes;
+        unsigned long tx_packets;
+        unsigned long tx_pkt_diff;
+        unsigned long rx_pkt_diff;
+        int moder_time;
+        int i, err;
+
+        if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
+                return;
+
+        spin_lock_bh(&priv->stats_lock);
+        rx_packets = priv->stats.rx_packets;
+        rx_bytes = priv->stats.rx_bytes;
+        tx_packets = priv->stats.tx_packets;
+        spin_unlock_bh(&priv->stats_lock);
+
+        if (!priv->last_moder_jiffies || !period)
+                goto out;
+
+        tx_pkt_diff = ((unsigned long) (tx_packets -
+                                        priv->last_moder_tx_packets));
+        rx_pkt_diff = ((unsigned long) (rx_packets -
+                                        priv->last_moder_packets));
+        packets = max(tx_pkt_diff, rx_pkt_diff);
+        rate = packets * HZ / period;
+        avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
+                                 priv->last_moder_bytes)) / packets : 0;
+
+        /* Apply auto-moderation only when packet rate exceeds a rate that
+         * it matters */
+        if (rate > MLX4_EN_RX_RATE_THRESH) {
+                /* If tx and rx packet rates are not balanced, assume that
+                 * traffic is mainly BW bound and apply maximum moderation.
+                 * Otherwise, moderate according to packet rate */
+                if (2 * tx_pkt_diff > 3 * rx_pkt_diff ||
+                    2 * rx_pkt_diff > 3 * tx_pkt_diff) {
+                        moder_time = priv->rx_usecs_high;
+                } else {
+                        if (rate < priv->pkt_rate_low)
+                                moder_time = priv->rx_usecs_low;
+                        else if (rate > priv->pkt_rate_high)
+                                moder_time = priv->rx_usecs_high;
+                        else
+                                moder_time = (rate - priv->pkt_rate_low) *
+                                        (priv->rx_usecs_high - priv->rx_usecs_low) /
+                                        (priv->pkt_rate_high - priv->pkt_rate_low) +
+                                        priv->rx_usecs_low;
+                }
+        } else {
+                /* When packet rate is low, use default moderation rather than
+                 * 0 to prevent interrupt storms if traffic suddenly increases */
+                moder_time = priv->rx_usecs;
+        }
+
+        mlx4_dbg(INTR, priv, "tx rate:%lu rx_rate:%lu\n",
+                 tx_pkt_diff * HZ / period, rx_pkt_diff * HZ / period);
+
+        mlx4_dbg(INTR, priv, "Rx moder_time changed from:%d to %d period:%lu "
+                 "[jiff] packets:%lu avg_pkt_size:%lu rate:%lu [p/s])\n",
+                 priv->last_moder_time, moder_time, period, packets,
+                 avg_pkt_size, rate);
+
+        if (moder_time != priv->last_moder_time) {
+                priv->last_moder_time = moder_time;
+                for (i = 0; i < priv->rx_ring_num; i++) {
+                        cq = &priv->rx_cq[i];
+                        cq->moder_time = moder_time;
+                        err = mlx4_en_set_cq_moder(priv, cq);
+                        if (err) {
+                                mlx4_err(mdev, "Failed modifying moderation for cq:%d "
+                                         "on port:%d\n", i, priv->port);
+                                break;
+                        }
+                }
+        }
+
+out:
+        priv->last_moder_packets = rx_packets;
+        priv->last_moder_tx_packets = tx_packets;
+        priv->last_moder_bytes = rx_bytes;
+        priv->last_moder_jiffies = jiffies;
+}
+
+static void mlx4_en_do_get_stats(struct work_struct *work)
+{
+        struct delayed_work *delay = container_of(work, struct delayed_work, work);
+        struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
+                                                 stats_task);
+        struct mlx4_en_dev *mdev = priv->mdev;
+        int err;
+
+        err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
+        if (err)
+                mlx4_dbg(HW, priv, "Could not update stats for "
+                                   "port:%d\n", priv->port);
+
+        mutex_lock(&mdev->state_lock);
+        if (mdev->device_up) {
+                if (priv->port_up)
+                        mlx4_en_auto_moderation(priv);
+
+                queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
+        }
+        mutex_unlock(&mdev->state_lock);
+}
+
+static void mlx4_en_linkstate(struct work_struct *work)
+{
+        struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
+                                                 linkstate_task);
+        struct mlx4_en_dev *mdev = priv->mdev;
+        int linkstate = priv->link_state;
+
+        mutex_lock(&mdev->state_lock);
+        /* If observable port state changed set carrier state and
+         * report to system log */
+        if (priv->last_link_state != linkstate) {
+                if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
+                        if (netif_msg_link(priv))
+                                mlx4_info(mdev, "Port %d - link down\n", priv->port);
+                        netif_carrier_off(priv->dev);
+                } else {
+                        if (netif_msg_link(priv))
+                                mlx4_info(mdev, "Port %d - link up\n", priv->port);
+                        netif_carrier_on(priv->dev);
+                }
+        }
+        priv->last_link_state = linkstate;
+        mutex_unlock(&mdev->state_lock);
+}
+
+
+static int mlx4_en_start_port(struct net_device *dev)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        struct mlx4_en_dev *mdev = priv->mdev;
+        struct mlx4_en_cq *cq;
+        struct mlx4_en_tx_ring *tx_ring;
+        struct mlx4_en_rx_ring *rx_ring;
+        int rx_index = 0;
+        int tx_index = 0;
+        u16 stride;
+        int err = 0;
+        int i;
+        int j;
+
+        if (priv->port_up) {
+                mlx4_dbg(DRV, priv, "start port called while port already up\n");
+                return 0;
+        }
+
+        /* Calculate Rx buf size */
+        dev->mtu = min(dev->mtu, priv->max_mtu);
+        mlx4_en_calc_rx_buf(dev);
+        mlx4_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
+        stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
+                                    DS_SIZE * priv->num_frags);
+        /* Configure rx cq's and rings */
+        for (i = 0; i < priv->rx_ring_num; i++) {
+                cq = &priv->rx_cq[i];
+                rx_ring = &priv->rx_ring[i];
+
+                err = mlx4_en_activate_cq(priv, cq);
+                if (err) {
+                        mlx4_err(mdev, "Failed activating Rx CQ\n");
+                        goto rx_err;
+                }
+                for (j = 0; j < cq->size; j++)
+                        cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
+                err = mlx4_en_set_cq_moder(priv, cq);
+                if (err) {
+                        mlx4_err(mdev, "Failed setting cq moderation parameters");
+                        mlx4_en_deactivate_cq(priv, cq);
+                        goto cq_err;
+                }
+                mlx4_en_arm_cq(priv, cq);
+
+                ++rx_index;
+        }
+
+        err = mlx4_en_activate_rx_rings(priv);
+        if (err) {
+                mlx4_err(mdev, "Failed to activate RX rings\n");
+                goto cq_err;
+        }
+
+        err = mlx4_en_config_rss_steer(priv);
+        if (err) {
+                mlx4_err(mdev, "Failed configuring rss steering\n");
+                goto rx_err;
+        }
+
+        /* Configure tx cq's and rings */
+        for (i = 0; i < priv->tx_ring_num; i++) {
+                /* Configure cq */
+                cq = &priv->tx_cq[i];
+                err = mlx4_en_activate_cq(priv, cq);
+                if (err) {
+                        mlx4_err(mdev, "Failed allocating Tx CQ\n");
+                        goto tx_err;
+                }
+                err = mlx4_en_set_cq_moder(priv, cq);
+                if (err) {
+                        mlx4_err(mdev, "Failed setting cq moderation parameters");
+                        mlx4_en_deactivate_cq(priv, cq);
+                        goto tx_err;
+                }
+                mlx4_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
+                cq->buf->wqe_index = cpu_to_be16(0xffff);
+
+                /* Configure ring */
+                tx_ring = &priv->tx_ring[i];
+                err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
+                                               priv->rx_ring[0].srq.srqn);
+                if (err) {
+                        mlx4_err(mdev, "Failed allocating Tx ring\n");
+                        mlx4_en_deactivate_cq(priv, cq);
+                        goto tx_err;
+                }
+                /* Set initial ownership of all Tx TXBBs to SW (1) */
+                for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
+                        *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
+                ++tx_index;
+        }
+
+        /* Configure port */
+        err = mlx4_SET_PORT_general(mdev->dev, priv->port,
+                                    priv->rx_skb_size + ETH_FCS_LEN,
+                                    mdev->profile.tx_pause,
+                                    mdev->profile.tx_ppp,
+                                    mdev->profile.rx_pause,
+                                    mdev->profile.rx_ppp);
+        if (err) {
+                mlx4_err(mdev, "Failed setting port general configurations"
+                               " for port %d, with error %d\n", priv->port, err);
+                goto tx_err;
+        }
+        /* Set default qp number */
+        err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
+        if (err) {
+                mlx4_err(mdev, "Failed setting default qp numbers\n");
+                goto tx_err;
+        }
+        /* Set port mac number */
+        mlx4_dbg(DRV, priv, "Setting mac for port %d\n", priv->port);
+        err = mlx4_register_mac(mdev->dev, priv->port,
+                                priv->mac, &priv->mac_index);
+        if (err) {
+                mlx4_err(mdev, "Failed setting port mac\n");
+                goto tx_err;
+        }
+
+        /* Init port */
+        mlx4_dbg(HW, priv, "Initializing port\n");
+        err = mlx4_INIT_PORT(mdev->dev, priv->port);
+        if (err) {
+                mlx4_err(mdev, "Failed Initializing port\n");
+                goto mac_err;
+        }
+
+        /* Schedule multicast task to populate multicast list */
+        queue_work(mdev->workqueue, &priv->mcast_task);
+
+        priv->port_up = true;
+        netif_start_queue(dev);
+        return 0;
+
+mac_err:
+        mlx4_unregister_mac(mdev->dev, priv->port, priv->mac_index);
+tx_err:
+        while (tx_index--) {
+                mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[tx_index]);
+                mlx4_en_deactivate_cq(priv, &priv->tx_cq[tx_index]);
+        }
+
+        mlx4_en_release_rss_steer(priv);
+rx_err:
+        for (i = 0; i < priv->rx_ring_num; i++)
+                mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[rx_index]);
+cq_err:
+        while (rx_index--)
+                mlx4_en_deactivate_cq(priv, &priv->rx_cq[rx_index]);
+
+        return err; /* need to close devices */
+}
+
+
+static void mlx4_en_stop_port(struct net_device *dev)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        struct mlx4_en_dev *mdev = priv->mdev;
+        int i;
+
+        if (!priv->port_up) {
+                mlx4_dbg(DRV, priv, "stop port (%d) called while port already down\n",
+                         priv->port);
+                return;
+        }
+        netif_stop_queue(dev);
+
+        /* Synchronize with tx routine */
+        netif_tx_lock_bh(dev);
+        priv->port_up = false;
+        netif_tx_unlock_bh(dev);
+
+        /* close port*/
+        mlx4_CLOSE_PORT(mdev->dev, priv->port);
+
+        /* Unregister Mac address for the port */
+        mlx4_unregister_mac(mdev->dev, priv->port, priv->mac_index);
+
+        /* Free TX Rings */
+        for (i = 0; i < priv->tx_ring_num; i++) {
+                mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[i]);
+                mlx4_en_deactivate_cq(priv, &priv->tx_cq[i]);
+        }
+        msleep(10);
+
+        for (i = 0; i < priv->tx_ring_num; i++)
+                mlx4_en_free_tx_buf(dev, &priv->tx_ring[i]);
+
+        /* Free RSS qps */
+        mlx4_en_release_rss_steer(priv);
+
+        /* Free RX Rings */
+        for (i = 0; i < priv->rx_ring_num; i++) {
+                mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
+                while (test_bit(NAPI_STATE_SCHED, &priv->rx_cq[i].napi.state))
+                        msleep(1);
+                mlx4_en_deactivate_cq(priv, &priv->rx_cq[i]);
+        }
+}
+
+static void mlx4_en_restart(struct work_struct *work)
+{
+        struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
+                                                 watchdog_task);
+        struct mlx4_en_dev *mdev = priv->mdev;
+        struct net_device *dev = priv->dev;
+
+        mlx4_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
+        mlx4_en_stop_port(dev);
+        if (mlx4_en_start_port(dev))
+            mlx4_err(mdev, "Failed restarting port %d\n", priv->port);
+}
+
+
+static int mlx4_en_open(struct net_device *dev)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        struct mlx4_en_dev *mdev = priv->mdev;
+        int i;
+        int err = 0;
+
+        mutex_lock(&mdev->state_lock);
+
+        if (!mdev->device_up) {
+                mlx4_err(mdev, "Cannot open - device down/disabled\n");
+                err = -EBUSY;
+                goto out;
+        }
+
+        /* Reset HW statistics and performance counters */
+        if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
+                mlx4_dbg(HW, priv, "Failed dumping statistics\n");
+
+        memset(&priv->stats, 0, sizeof(priv->stats));
+        memset(&priv->pstats, 0, sizeof(priv->pstats));
+
+        for (i = 0; i < priv->tx_ring_num; i++) {
+                priv->tx_ring[i].bytes = 0;
+                priv->tx_ring[i].packets = 0;
+        }
+        for (i = 0; i < priv->rx_ring_num; i++) {
+                priv->rx_ring[i].bytes = 0;
+                priv->rx_ring[i].packets = 0;
+        }
+
+        mlx4_en_set_default_moderation(priv);
+        err = mlx4_en_start_port(dev);
+        if (err)
+                mlx4_err(mdev, "Failed starting port:%d\n", priv->port);
+
+out:
+        mutex_unlock(&mdev->state_lock);
+        return err;
+}
+
+
+static int mlx4_en_close(struct net_device *dev)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        struct mlx4_en_dev *mdev = priv->mdev;
+
+        if (netif_msg_ifdown(priv))
+                mlx4_info(mdev, "Close called for port:%d\n", priv->port);
+
+        mutex_lock(&mdev->state_lock);
+
+        mlx4_en_stop_port(dev);
+        netif_carrier_off(dev);
+
+        mutex_unlock(&mdev->state_lock);
+        return 0;
+}
+
+static void mlx4_en_free_resources(struct mlx4_en_priv *priv)
+{
+        int i;
+
+        for (i = 0; i < priv->tx_ring_num; i++) {
+                if (priv->tx_ring[i].tx_info)
+                        mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
+                if (priv->tx_cq[i].buf)
+                        mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
+        }
+
+        for (i = 0; i < priv->rx_ring_num; i++) {
+                if (priv->rx_ring[i].rx_info)
+                        mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i]);
+                if (priv->rx_cq[i].buf)
+                        mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
+        }
+}
+
+static int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
+{
+        struct mlx4_en_dev *mdev = priv->mdev;
+        struct mlx4_en_port_profile *prof = priv->prof;
+        int i;
+
+        /* Create tx Rings */
+        for (i = 0; i < priv->tx_ring_num; i++) {
+                if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
+                                      prof->tx_ring_size, i, TX))
+                        goto err;
+
+                if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
+                                           prof->tx_ring_size, TXBB_SIZE))
+                        goto err;
+        }
+
+        /* Create rx Rings */
+        for (i = 0; i < priv->rx_ring_num; i++) {
+                if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
+                                      prof->rx_ring_size, i, RX))
+                        goto err;
+
+                if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
+                                           prof->rx_ring_size, priv->stride))
+                        goto err;
+        }
+
+        return 0;
+
+err:
+        mlx4_err(mdev, "Failed to allocate NIC resources\n");
+        return -ENOMEM;
+}
+
+
+void mlx4_en_destroy_netdev(struct net_device *dev)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        struct mlx4_en_dev *mdev = priv->mdev;
+
+        mlx4_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
+
+        /* Unregister device - this will close the port if it was up */
+        if (priv->registered)
+                unregister_netdev(dev);
+
+        if (priv->allocated)
+                mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
+
+        cancel_delayed_work(&priv->stats_task);
+        cancel_delayed_work(&priv->refill_task);
+        /* flush any pending task for this netdev */
+        flush_workqueue(mdev->workqueue);
+
+        /* Detach the netdev so tasks would not attempt to access it */
+        mutex_lock(&mdev->state_lock);
+        mdev->pndev[priv->port] = NULL;
+        mutex_unlock(&mdev->state_lock);
+
+        mlx4_en_free_resources(priv);
+        free_netdev(dev);
+}
+
+static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        struct mlx4_en_dev *mdev = priv->mdev;
+        int err = 0;
+
+        mlx4_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
+                 dev->mtu, new_mtu);
+
+        if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
+                mlx4_err(mdev, "Bad MTU size:%d.\n", new_mtu);
+                return -EPERM;
+        }
+        dev->mtu = new_mtu;
+
+        if (netif_running(dev)) {
+                mutex_lock(&mdev->state_lock);
+                if (!mdev->device_up) {
+                        /* NIC is probably restarting - let watchdog task reset
+                         * the port */
+                        mlx4_dbg(DRV, priv, "Change MTU called with card down!?\n");
+                } else {
+                        mlx4_en_stop_port(dev);
+                        mlx4_en_set_default_moderation(priv);
+                        err = mlx4_en_start_port(dev);
+                        if (err) {
+                                mlx4_err(mdev, "Failed restarting port:%d\n",
+                                         priv->port);
+                                queue_work(mdev->workqueue, &priv->watchdog_task);
+                        }
+                }
+                mutex_unlock(&mdev->state_lock);
+        }
+        return 0;
+}
+
+int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
+                        struct mlx4_en_port_profile *prof)
+{
+        struct net_device *dev;
+        struct mlx4_en_priv *priv;
+        int i;
+        int err;
+
+        dev = alloc_etherdev(sizeof(struct mlx4_en_priv));
+        if (dev == NULL) {
+                mlx4_err(mdev, "Net device allocation failed\n");
+                return -ENOMEM;
+        }
+
+        SET_NETDEV_DEV(dev, &mdev->dev->pdev->dev);
+
+        /*
+         * Initialize driver private data
+         */
+
+        priv = netdev_priv(dev);
+        memset(priv, 0, sizeof(struct mlx4_en_priv));
+        priv->dev = dev;
+        priv->mdev = mdev;
+        priv->prof = prof;
+        priv->port = port;
+        priv->port_up = false;
+        priv->rx_csum = 1;
+        priv->flags = prof->flags;
+        priv->tx_ring_num = prof->tx_ring_num;
+        priv->rx_ring_num = prof->rx_ring_num;
+        priv->mc_list = NULL;
+        priv->mac_index = -1;
+        priv->msg_enable = MLX4_EN_MSG_LEVEL;
+        spin_lock_init(&priv->stats_lock);
+        INIT_WORK(&priv->mcast_task, mlx4_en_do_set_multicast);
+        INIT_WORK(&priv->mac_task, mlx4_en_do_set_mac);
+        INIT_DELAYED_WORK(&priv->refill_task, mlx4_en_rx_refill);
+        INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
+        INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
+        INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
+
+        /* Query for default mac and max mtu */
+        priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
+        priv->mac = mdev->dev->caps.def_mac[priv->port];
+        if (ILLEGAL_MAC(priv->mac)) {
+                mlx4_err(mdev, "Port: %d, invalid mac burned: 0x%llx, quiting\n",
+                         priv->port, priv->mac);
+                err = -EINVAL;
+                goto out;
+        }
+
+        priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
+                                          DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
+        err = mlx4_en_alloc_resources(priv);
+        if (err)
+                goto out;
+
+        /* Populate Rx default RSS mappings */
+        mlx4_en_set_default_rss_map(priv, &priv->rss_map, priv->rx_ring_num *
+                                                RSS_FACTOR, priv->rx_ring_num);
+        /* Allocate page for receive rings */
+        err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
+                                MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
+        if (err) {
+                mlx4_err(mdev, "Failed to allocate page for rx qps\n");
+                goto out;
+        }
+        priv->allocated = 1;
+
+        /* Populate Tx priority mappings */
+        mlx4_en_set_prio_map(priv, priv->tx_prio_map, prof->tx_ring_num);
+
+        /*
+         * Initialize netdev entry points
+         */
+
+        dev->open = &mlx4_en_open;
+        dev->stop = &mlx4_en_close;
+        dev->hard_start_xmit = &mlx4_en_xmit;
+        dev->get_stats = &mlx4_en_get_stats;
+        dev->set_multicast_list = &mlx4_en_set_multicast;
+        dev->set_mac_address = &mlx4_en_set_mac;
+        dev->change_mtu = &mlx4_en_change_mtu;
+        dev->tx_timeout = &mlx4_en_tx_timeout;
+        dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
+        dev->vlan_rx_register = mlx4_en_vlan_rx_register;
+        dev->vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid;
+        dev->vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+        dev->poll_controller = mlx4_en_netpoll;
+#endif
+        SET_ETHTOOL_OPS(dev, &mlx4_en_ethtool_ops);
+
+        /* Set defualt MAC */
+        dev->addr_len = ETH_ALEN;
+        for (i = 0; i < ETH_ALEN; i++)
+                dev->dev_addr[ETH_ALEN - 1 - i] =
+                (u8) (priv->mac >> (8 * i));
+
+        /*
+         * Set driver features
+         */
+        dev->features |= NETIF_F_SG;
+        dev->features |= NETIF_F_HW_CSUM;
+        dev->features |= NETIF_F_HIGHDMA;
+        dev->features |= NETIF_F_HW_VLAN_TX |
+                         NETIF_F_HW_VLAN_RX |
+                         NETIF_F_HW_VLAN_FILTER;
+        if (mdev->profile.num_lro)
+                dev->features |= NETIF_F_LRO;
+        if (mdev->LSO_support) {
+                dev->features |= NETIF_F_TSO;
+                dev->features |= NETIF_F_TSO6;
+        }
+
+        mdev->pndev[port] = dev;
+
+        netif_carrier_off(dev);
+        err = register_netdev(dev);
+        if (err) {
+                mlx4_err(mdev, "Netdev registration failed\n");
+                goto out;
+        }
+        priv->registered = 1;
+        queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
+        return 0;
+
+out:
+        mlx4_en_destroy_netdev(dev);
+        return err;
+}
+
diff --git a/drivers/net/mlx4/en_params.c b/drivers/net/mlx4/en_params.c
new file mode 100644
index 000000000000..c2e69b1bcd0a
--- /dev/null
+++ b/drivers/net/mlx4/en_params.c
@@ -0,0 +1,480 @@
+/*
+ * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/ethtool.h>
+#include <linux/netdevice.h>
+
+#include "mlx4_en.h"
+#include "en_port.h"
+
+#define MLX4_EN_PARM_INT(X, def_val, desc) \
+        static unsigned int X = def_val;\
+        module_param(X , uint, 0444); \
+        MODULE_PARM_DESC(X, desc);
+
+
+/*
+ * Device scope module parameters
+ */
+
+
+/* Use a XOR rathern than Toeplitz hash function for RSS */
+MLX4_EN_PARM_INT(rss_xor, 0, "Use XOR hash function for RSS");
+
+/* RSS hash type mask - default to <saddr, daddr, sport, dport> */
+MLX4_EN_PARM_INT(rss_mask, 0xf, "RSS hash type bitmask");
+
+/* Number of LRO sessions per Rx ring (rounded up to a power of two) */
+MLX4_EN_PARM_INT(num_lro, MLX4_EN_MAX_LRO_DESCRIPTORS,
+                 "Number of LRO sessions per ring or disabled (0)");
+
+/* Priority pausing */
+MLX4_EN_PARM_INT(pptx, MLX4_EN_DEF_TX_PAUSE,
+                 "Pause policy on TX: 0 never generate pause frames "
+                 "1 generate pause frames according to RX buffer threshold");
+MLX4_EN_PARM_INT(pprx, MLX4_EN_DEF_RX_PAUSE,
+                 "Pause policy on RX: 0 ignore received pause frames "
+                 "1 respect received pause frames");
+MLX4_EN_PARM_INT(pfctx, 0, "Priority based Flow Control policy on TX[7:0]."
+                           " Per priority bit mask");
+MLX4_EN_PARM_INT(pfcrx, 0, "Priority based Flow Control policy on RX[7:0]."
+                           " Per priority bit mask");
+
+/* Interrupt moderation tunning */
+MLX4_EN_PARM_INT(rx_moder_cnt, MLX4_EN_AUTO_CONF,
+               "Max coalesced descriptors for Rx interrupt moderation");
+MLX4_EN_PARM_INT(rx_moder_time, MLX4_EN_AUTO_CONF,
+               "Timeout following last packet for Rx interrupt moderation");
+MLX4_EN_PARM_INT(auto_moder, 1, "Enable dynamic interrupt moderation");
+
+MLX4_EN_PARM_INT(rx_ring_num1, 0, "Number or Rx rings for port 1 (0 = #cores)");
+MLX4_EN_PARM_INT(rx_ring_num2, 0, "Number or Rx rings for port 2 (0 = #cores)");
+
+MLX4_EN_PARM_INT(tx_ring_size1, MLX4_EN_AUTO_CONF, "Tx ring size for port 1");
+MLX4_EN_PARM_INT(tx_ring_size2, MLX4_EN_AUTO_CONF, "Tx ring size for port 2");
+MLX4_EN_PARM_INT(rx_ring_size1, MLX4_EN_AUTO_CONF, "Rx ring size for port 1");
+MLX4_EN_PARM_INT(rx_ring_size2, MLX4_EN_AUTO_CONF, "Rx ring size for port 2");
+
+
+int mlx4_en_get_profile(struct mlx4_en_dev *mdev)
+{
+        struct mlx4_en_profile *params = &mdev->profile;
+
+        params->rx_moder_cnt = min_t(int, rx_moder_cnt, MLX4_EN_AUTO_CONF);
+        params->rx_moder_time = min_t(int, rx_moder_time, MLX4_EN_AUTO_CONF);
+        params->auto_moder = auto_moder;
+        params->rss_xor = (rss_xor != 0);
+        params->rss_mask = rss_mask & 0x1f;
+        params->num_lro = min_t(int, num_lro , MLX4_EN_MAX_LRO_DESCRIPTORS);
+        params->rx_pause = pprx;
+        params->rx_ppp = pfcrx;
+        params->tx_pause = pptx;
+        params->tx_ppp = pfctx;
+        if (params->rx_ppp || params->tx_ppp) {
+                params->prof[1].tx_ring_num = MLX4_EN_TX_RING_NUM;
+                params->prof[2].tx_ring_num = MLX4_EN_TX_RING_NUM;
+        } else {
+                params->prof[1].tx_ring_num = 1;
+                params->prof[2].tx_ring_num = 1;
+        }
+        params->prof[1].rx_ring_num = min_t(int, rx_ring_num1, MAX_RX_RINGS);
+        params->prof[2].rx_ring_num = min_t(int, rx_ring_num2, MAX_RX_RINGS);
+
+        if (tx_ring_size1 == MLX4_EN_AUTO_CONF)
+                tx_ring_size1 = MLX4_EN_DEF_TX_RING_SIZE;
+        params->prof[1].tx_ring_size =
+                (tx_ring_size1 < MLX4_EN_MIN_TX_SIZE) ?
+                 MLX4_EN_MIN_TX_SIZE : roundup_pow_of_two(tx_ring_size1);
+
+        if (tx_ring_size2 == MLX4_EN_AUTO_CONF)
+                tx_ring_size2 = MLX4_EN_DEF_TX_RING_SIZE;
+        params->prof[2].tx_ring_size =
+                (tx_ring_size2 < MLX4_EN_MIN_TX_SIZE) ?
+                 MLX4_EN_MIN_TX_SIZE : roundup_pow_of_two(tx_ring_size2);
+
+        if (rx_ring_size1 == MLX4_EN_AUTO_CONF)
+                rx_ring_size1 = MLX4_EN_DEF_RX_RING_SIZE;
+        params->prof[1].rx_ring_size =
+                (rx_ring_size1 < MLX4_EN_MIN_RX_SIZE) ?
+                 MLX4_EN_MIN_RX_SIZE : roundup_pow_of_two(rx_ring_size1);
+
+        if (rx_ring_size2 == MLX4_EN_AUTO_CONF)
+                rx_ring_size2 = MLX4_EN_DEF_RX_RING_SIZE;
+        params->prof[2].rx_ring_size =
+                (rx_ring_size2 < MLX4_EN_MIN_RX_SIZE) ?
+                 MLX4_EN_MIN_RX_SIZE : roundup_pow_of_two(rx_ring_size2);
+        return 0;
+}
+
+
+/*
+ * Ethtool support
+ */
+
+static void mlx4_en_update_lro_stats(struct mlx4_en_priv *priv)
+{
+        int i;
+
+        priv->port_stats.lro_aggregated = 0;
+        priv->port_stats.lro_flushed = 0;
+        priv->port_stats.lro_no_desc = 0;
+
+        for (i = 0; i < priv->rx_ring_num; i++) {
+                priv->port_stats.lro_aggregated += priv->rx_ring[i].lro.stats.aggregated;
+                priv->port_stats.lro_flushed += priv->rx_ring[i].lro.stats.flushed;
+                priv->port_stats.lro_no_desc += priv->rx_ring[i].lro.stats.no_desc;
+        }
+}
+
+static void
+mlx4_en_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *drvinfo)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        struct mlx4_en_dev *mdev = priv->mdev;
+
+        sprintf(drvinfo->driver, DRV_NAME " (%s)", mdev->dev->board_id);
+        strncpy(drvinfo->version, DRV_VERSION " (" DRV_RELDATE ")", 32);
+        sprintf(drvinfo->fw_version, "%d.%d.%d",
+                (u16) (mdev->dev->caps.fw_ver >> 32),
+                (u16) ((mdev->dev->caps.fw_ver >> 16) & 0xffff),
+                (u16) (mdev->dev->caps.fw_ver & 0xffff));
+        strncpy(drvinfo->bus_info, pci_name(mdev->dev->pdev), 32);
+        drvinfo->n_stats = 0;
+        drvinfo->regdump_len = 0;
+        drvinfo->eedump_len = 0;
+}
+
+static u32 mlx4_en_get_tso(struct net_device *dev)
+{
+        return (dev->features & NETIF_F_TSO) != 0;
+}
+
+static int mlx4_en_set_tso(struct net_device *dev, u32 data)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+
+        if (data) {
+                if (!priv->mdev->LSO_support)
+                        return -EPERM;
+                dev->features |= (NETIF_F_TSO | NETIF_F_TSO6);
+        } else
+                dev->features &= ~(NETIF_F_TSO | NETIF_F_TSO6);
+        return 0;
+}
+
+static u32 mlx4_en_get_rx_csum(struct net_device *dev)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        return priv->rx_csum;
+}
+
+static int mlx4_en_set_rx_csum(struct net_device *dev, u32 data)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        priv->rx_csum = (data != 0);
+        return 0;
+}
+
+static const char main_strings[][ETH_GSTRING_LEN] = {
+        "rx_packets", "tx_packets", "rx_bytes", "tx_bytes", "rx_errors",
+        "tx_errors", "rx_dropped", "tx_dropped", "multicast", "collisions",
+        "rx_length_errors", "rx_over_errors", "rx_crc_errors",
+        "rx_frame_errors", "rx_fifo_errors", "rx_missed_errors",
+        "tx_aborted_errors", "tx_carrier_errors", "tx_fifo_errors",
+        "tx_heartbeat_errors", "tx_window_errors",
+
+        /* port statistics */
+        "lro_aggregated", "lro_flushed", "lro_no_desc", "tso_packets",
+        "queue_stopped", "wake_queue", "tx_timeout", "rx_alloc_failed",
+        "rx_csum_good", "rx_csum_none", "tx_chksum_offload",
+
+        /* packet statistics */
+        "broadcast", "rx_prio_0", "rx_prio_1", "rx_prio_2", "rx_prio_3",
+        "rx_prio_4", "rx_prio_5", "rx_prio_6", "rx_prio_7", "tx_prio_0",
+        "tx_prio_1", "tx_prio_2", "tx_prio_3", "tx_prio_4", "tx_prio_5",
+        "tx_prio_6", "tx_prio_7",
+};
+#define NUM_MAIN_STATS  21
+#define NUM_ALL_STATS   (NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PKT_STATS + NUM_PERF_STATS)
+
+static u32 mlx4_en_get_msglevel(struct net_device *dev)
+{
+        return ((struct mlx4_en_priv *) netdev_priv(dev))->msg_enable;
+}
+
+static void mlx4_en_set_msglevel(struct net_device *dev, u32 val)
+{
+        ((struct mlx4_en_priv *) netdev_priv(dev))->msg_enable = val;
+}
+
+static void mlx4_en_get_wol(struct net_device *netdev,
+                            struct ethtool_wolinfo *wol)
+{
+        wol->supported = 0;
+        wol->wolopts = 0;
+
+        return;
+}
+
+static int mlx4_en_get_sset_count(struct net_device *dev, int sset)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+
+        if (sset != ETH_SS_STATS)
+                return -EOPNOTSUPP;
+
+        return NUM_ALL_STATS + (priv->tx_ring_num + priv->rx_ring_num) * 2;
+}
+
+static void mlx4_en_get_ethtool_stats(struct net_device *dev,
+                struct ethtool_stats *stats, uint64_t *data)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        int index = 0;
+        int i;
+
+        spin_lock_bh(&priv->stats_lock);
+
+        mlx4_en_update_lro_stats(priv);
+
+        for (i = 0; i < NUM_MAIN_STATS; i++)
+                data[index++] = ((unsigned long *) &priv->stats)[i];
+        for (i = 0; i < NUM_PORT_STATS; i++)
+                data[index++] = ((unsigned long *) &priv->port_stats)[i];
+        for (i = 0; i < priv->tx_ring_num; i++) {
+                data[index++] = priv->tx_ring[i].packets;
+                data[index++] = priv->tx_ring[i].bytes;
+        }
+        for (i = 0; i < priv->rx_ring_num; i++) {
+                data[index++] = priv->rx_ring[i].packets;
+                data[index++] = priv->rx_ring[i].bytes;
+        }
+        for (i = 0; i < NUM_PKT_STATS; i++)
+                data[index++] = ((unsigned long *) &priv->pkstats)[i];
+        spin_unlock_bh(&priv->stats_lock);
+
+}
+
+static void mlx4_en_get_strings(struct net_device *dev,
+                                uint32_t stringset, uint8_t *data)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        int index = 0;
+        int i;
+
+        if (stringset != ETH_SS_STATS)
+                return;
+
+        /* Add main counters */
+        for (i = 0; i < NUM_MAIN_STATS; i++)
+                strcpy(data + (index++) * ETH_GSTRING_LEN, main_strings[i]);
+        for (i = 0; i < NUM_PORT_STATS; i++)
+                strcpy(data + (index++) * ETH_GSTRING_LEN,
+                        main_strings[i + NUM_MAIN_STATS]);
+        for (i = 0; i < priv->tx_ring_num; i++) {
+                sprintf(data + (index++) * ETH_GSTRING_LEN,
+                        "tx%d_packets", i);
+                sprintf(data + (index++) * ETH_GSTRING_LEN,
+                        "tx%d_bytes", i);
+        }
+        for (i = 0; i < priv->rx_ring_num; i++) {
+                sprintf(data + (index++) * ETH_GSTRING_LEN,
+                        "rx%d_packets", i);
+                sprintf(data + (index++) * ETH_GSTRING_LEN,
+                        "rx%d_bytes", i);
+        }
+        for (i = 0; i < NUM_PKT_STATS; i++)
+                strcpy(data + (index++) * ETH_GSTRING_LEN,
+                        main_strings[i + NUM_MAIN_STATS + NUM_PORT_STATS]);
+}
+
+static int mlx4_en_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+        cmd->autoneg = AUTONEG_DISABLE;
+        cmd->supported = SUPPORTED_10000baseT_Full;
+        cmd->advertising = SUPPORTED_10000baseT_Full;
+        if (netif_carrier_ok(dev)) {
+                cmd->speed = SPEED_10000;
+                cmd->duplex = DUPLEX_FULL;
+        } else {
+                cmd->speed = -1;
+                cmd->duplex = -1;
+        }
+        return 0;
+}
+
+static int mlx4_en_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+        if ((cmd->autoneg == AUTONEG_ENABLE) ||
+            (cmd->speed != SPEED_10000) || (cmd->duplex != DUPLEX_FULL))
+                return -EINVAL;
+
+        /* Nothing to change */
+        return 0;
+}
+
+static int mlx4_en_get_coalesce(struct net_device *dev,
+                              struct ethtool_coalesce *coal)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+
+        coal->tx_coalesce_usecs = 0;
+        coal->tx_max_coalesced_frames = 0;
+        coal->rx_coalesce_usecs = priv->rx_usecs;
+        coal->rx_max_coalesced_frames = priv->rx_frames;
+
+        coal->pkt_rate_low = priv->pkt_rate_low;
+        coal->rx_coalesce_usecs_low = priv->rx_usecs_low;
+        coal->pkt_rate_high = priv->pkt_rate_high;
+        coal->rx_coalesce_usecs_high = priv->rx_usecs_high;
+        coal->rate_sample_interval = priv->sample_interval;
+        coal->use_adaptive_rx_coalesce = priv->adaptive_rx_coal;
+        return 0;
+}
+
+static int mlx4_en_set_coalesce(struct net_device *dev,
+                              struct ethtool_coalesce *coal)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        int err, i;
+
+        priv->rx_frames = (coal->rx_max_coalesced_frames ==
+                           MLX4_EN_AUTO_CONF) ?
+                                MLX4_EN_RX_COAL_TARGET /
+                                priv->dev->mtu + 1 :
+                                coal->rx_max_coalesced_frames;
+        priv->rx_usecs = (coal->rx_coalesce_usecs ==
+                          MLX4_EN_AUTO_CONF) ?
+                                MLX4_EN_RX_COAL_TIME :
+                                coal->rx_coalesce_usecs;
+
+        /* Set adaptive coalescing params */
+        priv->pkt_rate_low = coal->pkt_rate_low;
+        priv->rx_usecs_low = coal->rx_coalesce_usecs_low;
+        priv->pkt_rate_high = coal->pkt_rate_high;
+        priv->rx_usecs_high = coal->rx_coalesce_usecs_high;
+        priv->sample_interval = coal->rate_sample_interval;
+        priv->adaptive_rx_coal = coal->use_adaptive_rx_coalesce;
+        priv->last_moder_time = MLX4_EN_AUTO_CONF;
+        if (priv->adaptive_rx_coal)
+                return 0;
+
+        for (i = 0; i < priv->rx_ring_num; i++) {
+                priv->rx_cq[i].moder_cnt = priv->rx_frames;
+                priv->rx_cq[i].moder_time = priv->rx_usecs;
+                err = mlx4_en_set_cq_moder(priv, &priv->rx_cq[i]);
+                if (err)
+                        return err;
+        }
+        return 0;
+}
+
+static int mlx4_en_set_pauseparam(struct net_device *dev,
+                                struct ethtool_pauseparam *pause)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        struct mlx4_en_dev *mdev = priv->mdev;
+        int err;
+
+        mdev->profile.tx_pause = pause->tx_pause != 0;
+        mdev->profile.rx_pause = pause->rx_pause != 0;
+        err = mlx4_SET_PORT_general(mdev->dev, priv->port,
+                                    priv->rx_skb_size + ETH_FCS_LEN,
+                                    mdev->profile.tx_pause,
+                                    mdev->profile.tx_ppp,
+                                    mdev->profile.rx_pause,
+                                    mdev->profile.rx_ppp);
+        if (err)
+                mlx4_err(mdev, "Failed setting pause params to\n");
+
+        return err;
+}
+
+static void mlx4_en_get_pauseparam(struct net_device *dev,
+                                 struct ethtool_pauseparam *pause)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        struct mlx4_en_dev *mdev = priv->mdev;
+
+        pause->tx_pause = mdev->profile.tx_pause;
+        pause->rx_pause = mdev->profile.rx_pause;
+}
+
+static void mlx4_en_get_ringparam(struct net_device *dev,
+                                  struct ethtool_ringparam *param)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        struct mlx4_en_dev *mdev = priv->mdev;
+
+        memset(param, 0, sizeof(*param));
+        param->rx_max_pending = mdev->dev->caps.max_rq_sg;
+        param->tx_max_pending = mdev->dev->caps.max_sq_sg;
+        param->rx_pending = mdev->profile.prof[priv->port].rx_ring_size;
+        param->tx_pending = mdev->profile.prof[priv->port].tx_ring_size;
+}
+
+const struct ethtool_ops mlx4_en_ethtool_ops = {
+        .get_drvinfo = mlx4_en_get_drvinfo,
+        .get_settings = mlx4_en_get_settings,
+        .set_settings = mlx4_en_set_settings,
+#ifdef NETIF_F_TSO
+        .get_tso = mlx4_en_get_tso,
+        .set_tso = mlx4_en_set_tso,
+#endif
+        .get_sg = ethtool_op_get_sg,
+        .set_sg = ethtool_op_set_sg,
+        .get_link = ethtool_op_get_link,
+        .get_rx_csum = mlx4_en_get_rx_csum,
+        .set_rx_csum = mlx4_en_set_rx_csum,
+        .get_tx_csum = ethtool_op_get_tx_csum,
+        .set_tx_csum = ethtool_op_set_tx_ipv6_csum,
+        .get_strings = mlx4_en_get_strings,
+        .get_sset_count = mlx4_en_get_sset_count,
+        .get_ethtool_stats = mlx4_en_get_ethtool_stats,
+        .get_wol = mlx4_en_get_wol,
+        .get_msglevel = mlx4_en_get_msglevel,
+        .set_msglevel = mlx4_en_set_msglevel,
+        .get_coalesce = mlx4_en_get_coalesce,
+        .set_coalesce = mlx4_en_set_coalesce,
+        .get_pauseparam = mlx4_en_get_pauseparam,
+        .set_pauseparam = mlx4_en_set_pauseparam,
+        .get_ringparam = mlx4_en_get_ringparam,
+        .get_flags = ethtool_op_get_flags,
+        .set_flags = ethtool_op_set_flags,
+};
+
+
+
+
+
diff --git a/drivers/net/mlx4/en_port.c b/drivers/net/mlx4/en_port.c
new file mode 100644
index 000000000000..c5a4c0389752
--- /dev/null
+++ b/drivers/net/mlx4/en_port.c
@@ -0,0 +1,261 @@
+/*
+ * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+
+#include <linux/if_vlan.h>
+
+#include <linux/mlx4/device.h>
+#include <linux/mlx4/cmd.h>
+
+#include "en_port.h"
+#include "mlx4_en.h"
+
+
+int mlx4_SET_MCAST_FLTR(struct mlx4_dev *dev, u8 port,
+                        u64 mac, u64 clear, u8 mode)
+{
+        return mlx4_cmd(dev, (mac | (clear << 63)), port, mode,
+                        MLX4_CMD_SET_MCAST_FLTR, MLX4_CMD_TIME_CLASS_B);
+}
+
+int mlx4_SET_VLAN_FLTR(struct mlx4_dev *dev, u8 port, struct vlan_group *grp)
+{
+        struct mlx4_cmd_mailbox *mailbox;
+        struct mlx4_set_vlan_fltr_mbox *filter;
+        int i;
+        int j;
+        int index = 0;
+        u32 entry;
+        int err = 0;
+
+        mailbox = mlx4_alloc_cmd_mailbox(dev);
+        if (IS_ERR(mailbox))
+                return PTR_ERR(mailbox);
+
+        filter = mailbox->buf;
+        if (grp) {
+                memset(filter, 0, sizeof *filter);
+                for (i = VLAN_FLTR_SIZE - 1; i >= 0; i--) {
+                        entry = 0;
+                        for (j = 0; j < 32; j++)
+                                if (vlan_group_get_device(grp, index++))
+                                        entry |= 1 << j;
+                        filter->entry[i] = cpu_to_be32(entry);
+                }
+        } else {
+                /* When no vlans are configured we block all vlans */
+                memset(filter, 0, sizeof(*filter));
+        }
+        err = mlx4_cmd(dev, mailbox->dma, port, 0, MLX4_CMD_SET_VLAN_FLTR,
+                       MLX4_CMD_TIME_CLASS_B);
+        mlx4_free_cmd_mailbox(dev, mailbox);
+        return err;
+}
+
+
+int mlx4_SET_PORT_general(struct mlx4_dev *dev, u8 port, int mtu,
+                          u8 pptx, u8 pfctx, u8 pprx, u8 pfcrx)
+{
+        struct mlx4_cmd_mailbox *mailbox;
+        struct mlx4_set_port_general_context *context;
+        int err;
+        u32 in_mod;
+
+        mailbox = mlx4_alloc_cmd_mailbox(dev);
+        if (IS_ERR(mailbox))
+                return PTR_ERR(mailbox);
+        context = mailbox->buf;
+        memset(context, 0, sizeof *context);
+
+        context->flags = SET_PORT_GEN_ALL_VALID;
+        context->mtu = cpu_to_be16(mtu);
+        context->pptx = (pptx * (!pfctx)) << 7;
+        context->pfctx = pfctx;
+        context->pprx = (pprx * (!pfcrx)) << 7;
+        context->pfcrx = pfcrx;
+
+        in_mod = MLX4_SET_PORT_GENERAL << 8 | port;
+        err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
+                       MLX4_CMD_TIME_CLASS_B);
+
+        mlx4_free_cmd_mailbox(dev, mailbox);
+        return err;
+}
+
+int mlx4_SET_PORT_qpn_calc(struct mlx4_dev *dev, u8 port, u32 base_qpn,
+                           u8 promisc)
+{
+        struct mlx4_cmd_mailbox *mailbox;
+        struct mlx4_set_port_rqp_calc_context *context;
+        int err;
+        u32 in_mod;
+
+        mailbox = mlx4_alloc_cmd_mailbox(dev);
+        if (IS_ERR(mailbox))
+                return PTR_ERR(mailbox);
+        context = mailbox->buf;
+        memset(context, 0, sizeof *context);
+
+        context->base_qpn = cpu_to_be32(base_qpn);
+        context->promisc = cpu_to_be32(promisc << SET_PORT_PROMISC_SHIFT | base_qpn);
+        context->mcast = cpu_to_be32(1 << SET_PORT_PROMISC_SHIFT | base_qpn);
+        context->intra_no_vlan = 0;
+        context->no_vlan = MLX4_NO_VLAN_IDX;
+        context->intra_vlan_miss = 0;
+        context->vlan_miss = MLX4_VLAN_MISS_IDX;
+
+        in_mod = MLX4_SET_PORT_RQP_CALC << 8 | port;
+        err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
+                       MLX4_CMD_TIME_CLASS_B);
+
+        mlx4_free_cmd_mailbox(dev, mailbox);
+        return err;
+}
+
+
+int mlx4_en_DUMP_ETH_STATS(struct mlx4_en_dev *mdev, u8 port, u8 reset)
+{
+        struct mlx4_en_stat_out_mbox *mlx4_en_stats;
+        struct mlx4_en_priv *priv = netdev_priv(mdev->pndev[port]);
+        struct net_device_stats *stats = &priv->stats;
+        struct mlx4_cmd_mailbox *mailbox;
+        u64 in_mod = reset << 8 | port;
+        int err;
+
+        mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
+        if (IS_ERR(mailbox))
+                return PTR_ERR(mailbox);
+        memset(mailbox->buf, 0, sizeof(*mlx4_en_stats));
+        err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, in_mod, 0,
+                           MLX4_CMD_DUMP_ETH_STATS, MLX4_CMD_TIME_CLASS_B);
+        if (err)
+                goto out;
+
+        mlx4_en_stats = mailbox->buf;
+
+        spin_lock_bh(&priv->stats_lock);
+
+        stats->rx_packets = be32_to_cpu(mlx4_en_stats->RTOTFRMS) -
+                            be32_to_cpu(mlx4_en_stats->RDROP);
+        stats->tx_packets = be64_to_cpu(mlx4_en_stats->TTOT_prio_0) +
+                            be64_to_cpu(mlx4_en_stats->TTOT_prio_1) +
+                            be64_to_cpu(mlx4_en_stats->TTOT_prio_2) +
+                            be64_to_cpu(mlx4_en_stats->TTOT_prio_3) +
+                            be64_to_cpu(mlx4_en_stats->TTOT_prio_4) +
+                            be64_to_cpu(mlx4_en_stats->TTOT_prio_5) +
+                            be64_to_cpu(mlx4_en_stats->TTOT_prio_6) +
+                            be64_to_cpu(mlx4_en_stats->TTOT_prio_7) +
+                            be64_to_cpu(mlx4_en_stats->TTOT_novlan) +
+                            be64_to_cpu(mlx4_en_stats->TTOT_loopbk);
+        stats->rx_bytes = be64_to_cpu(mlx4_en_stats->ROCT_prio_0) +
+                          be64_to_cpu(mlx4_en_stats->ROCT_prio_1) +
+                          be64_to_cpu(mlx4_en_stats->ROCT_prio_2) +
+                          be64_to_cpu(mlx4_en_stats->ROCT_prio_3) +
+                          be64_to_cpu(mlx4_en_stats->ROCT_prio_4) +
+                          be64_to_cpu(mlx4_en_stats->ROCT_prio_5) +
+                          be64_to_cpu(mlx4_en_stats->ROCT_prio_6) +
+                          be64_to_cpu(mlx4_en_stats->ROCT_prio_7) +
+                          be64_to_cpu(mlx4_en_stats->ROCT_novlan);
+
+        stats->tx_bytes = be64_to_cpu(mlx4_en_stats->TTTLOCT_prio_0) +
+                          be64_to_cpu(mlx4_en_stats->TTTLOCT_prio_1) +
+                          be64_to_cpu(mlx4_en_stats->TTTLOCT_prio_2) +
+                          be64_to_cpu(mlx4_en_stats->TTTLOCT_prio_3) +
+                          be64_to_cpu(mlx4_en_stats->TTTLOCT_prio_4) +
+                          be64_to_cpu(mlx4_en_stats->TTTLOCT_prio_5) +
+                          be64_to_cpu(mlx4_en_stats->TTTLOCT_prio_6) +
+                          be64_to_cpu(mlx4_en_stats->TTTLOCT_prio_7) +
+                          be64_to_cpu(mlx4_en_stats->TTTLOCT_novlan) +
+                          be64_to_cpu(mlx4_en_stats->TTTLOCT_loopbk);
+
+        stats->rx_errors = be64_to_cpu(mlx4_en_stats->PCS) +
+                           be32_to_cpu(mlx4_en_stats->RdropLength) +
+                           be32_to_cpu(mlx4_en_stats->RJBBR) +
+                           be32_to_cpu(mlx4_en_stats->RCRC) +
+                           be32_to_cpu(mlx4_en_stats->RRUNT);
+        stats->tx_errors = be32_to_cpu(mlx4_en_stats->TDROP);
+        stats->multicast = be64_to_cpu(mlx4_en_stats->MCAST_prio_0) +
+                           be64_to_cpu(mlx4_en_stats->MCAST_prio_1) +
+                           be64_to_cpu(mlx4_en_stats->MCAST_prio_2) +
+                           be64_to_cpu(mlx4_en_stats->MCAST_prio_3) +
+                           be64_to_cpu(mlx4_en_stats->MCAST_prio_4) +
+                           be64_to_cpu(mlx4_en_stats->MCAST_prio_5) +
+                           be64_to_cpu(mlx4_en_stats->MCAST_prio_6) +
+                           be64_to_cpu(mlx4_en_stats->MCAST_prio_7) +
+                           be64_to_cpu(mlx4_en_stats->MCAST_novlan);
+        stats->collisions = 0;
+        stats->rx_length_errors = be32_to_cpu(mlx4_en_stats->RdropLength);
+        stats->rx_over_errors = be32_to_cpu(mlx4_en_stats->RdropOvflw);
+        stats->rx_crc_errors = be32_to_cpu(mlx4_en_stats->RCRC);
+        stats->rx_frame_errors = 0;
+        stats->rx_fifo_errors = be32_to_cpu(mlx4_en_stats->RdropOvflw);
+        stats->rx_missed_errors = be32_to_cpu(mlx4_en_stats->RdropOvflw);
+        stats->tx_aborted_errors = 0;
+        stats->tx_carrier_errors = 0;
+        stats->tx_fifo_errors = 0;
+        stats->tx_heartbeat_errors = 0;
+        stats->tx_window_errors = 0;
+
+        priv->pkstats.broadcast =
+                                be64_to_cpu(mlx4_en_stats->RBCAST_prio_0) +
+                                be64_to_cpu(mlx4_en_stats->RBCAST_prio_1) +
+                                be64_to_cpu(mlx4_en_stats->RBCAST_prio_2) +
+                                be64_to_cpu(mlx4_en_stats->RBCAST_prio_3) +
+                                be64_to_cpu(mlx4_en_stats->RBCAST_prio_4) +
+                                be64_to_cpu(mlx4_en_stats->RBCAST_prio_5) +
+                                be64_to_cpu(mlx4_en_stats->RBCAST_prio_6) +
+                                be64_to_cpu(mlx4_en_stats->RBCAST_prio_7) +
+                                be64_to_cpu(mlx4_en_stats->RBCAST_novlan);
+        priv->pkstats.rx_prio[0] = be64_to_cpu(mlx4_en_stats->RTOT_prio_0);
+        priv->pkstats.rx_prio[1] = be64_to_cpu(mlx4_en_stats->RTOT_prio_1);
+        priv->pkstats.rx_prio[2] = be64_to_cpu(mlx4_en_stats->RTOT_prio_2);
+        priv->pkstats.rx_prio[3] = be64_to_cpu(mlx4_en_stats->RTOT_prio_3);
+        priv->pkstats.rx_prio[4] = be64_to_cpu(mlx4_en_stats->RTOT_prio_4);
+        priv->pkstats.rx_prio[5] = be64_to_cpu(mlx4_en_stats->RTOT_prio_5);
+        priv->pkstats.rx_prio[6] = be64_to_cpu(mlx4_en_stats->RTOT_prio_6);
+        priv->pkstats.rx_prio[7] = be64_to_cpu(mlx4_en_stats->RTOT_prio_7);
+        priv->pkstats.tx_prio[0] = be64_to_cpu(mlx4_en_stats->TTOT_prio_0);
+        priv->pkstats.tx_prio[1] = be64_to_cpu(mlx4_en_stats->TTOT_prio_1);
+        priv->pkstats.tx_prio[2] = be64_to_cpu(mlx4_en_stats->TTOT_prio_2);
+        priv->pkstats.tx_prio[3] = be64_to_cpu(mlx4_en_stats->TTOT_prio_3);
+        priv->pkstats.tx_prio[4] = be64_to_cpu(mlx4_en_stats->TTOT_prio_4);
+        priv->pkstats.tx_prio[5] = be64_to_cpu(mlx4_en_stats->TTOT_prio_5);
+        priv->pkstats.tx_prio[6] = be64_to_cpu(mlx4_en_stats->TTOT_prio_6);
+        priv->pkstats.tx_prio[7] = be64_to_cpu(mlx4_en_stats->TTOT_prio_7);
+        spin_unlock_bh(&priv->stats_lock);
+
+out:
+        mlx4_free_cmd_mailbox(mdev->dev, mailbox);
+        return err;
+}
+
diff --git a/drivers/net/mlx4/en_port.h b/drivers/net/mlx4/en_port.h
new file mode 100644
index 000000000000..e6477f12beb5
--- /dev/null
+++ b/drivers/net/mlx4/en_port.h
@@ -0,0 +1,570 @@
+/*
+ * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#ifndef _MLX4_EN_PORT_H_
+#define _MLX4_EN_PORT_H_
+
+
+#define SET_PORT_GEN_ALL_VALID  0x7
+#define SET_PORT_PROMISC_SHIFT  31
+
+enum {
+        MLX4_CMD_SET_VLAN_FLTR  = 0x47,
+        MLX4_CMD_SET_MCAST_FLTR = 0x48,
+        MLX4_CMD_DUMP_ETH_STATS = 0x49,
+};
+
+struct mlx4_set_port_general_context {
+        u8 reserved[3];
+        u8 flags;
+        u16 reserved2;
+        __be16 mtu;
+        u8 pptx;
+        u8 pfctx;
+        u16 reserved3;
+        u8 pprx;
+        u8 pfcrx;
+        u16 reserved4;
+};
+
+struct mlx4_set_port_rqp_calc_context {
+        __be32 base_qpn;
+        __be32 flags;
+        u8 reserved[3];
+        u8 mac_miss;
+        u8 intra_no_vlan;
+        u8 no_vlan;
+        u8 intra_vlan_miss;
+        u8 vlan_miss;
+        u8 reserved2[3];
+        u8 no_vlan_prio;
+        __be32 promisc;
+        __be32 mcast;
+};
+
+#define VLAN_FLTR_SIZE  128
+struct mlx4_set_vlan_fltr_mbox {
+        __be32 entry[VLAN_FLTR_SIZE];
+};
+
+
+enum {
+        MLX4_MCAST_CONFIG       = 0,
+        MLX4_MCAST_DISABLE      = 1,
+        MLX4_MCAST_ENABLE       = 2,
+};
+
+
+struct mlx4_en_stat_out_mbox {
+        /* Received frames with a length of 64 octets */
+        __be64 R64_prio_0;
+        __be64 R64_prio_1;
+        __be64 R64_prio_2;
+        __be64 R64_prio_3;
+        __be64 R64_prio_4;
+        __be64 R64_prio_5;
+        __be64 R64_prio_6;
+        __be64 R64_prio_7;
+        __be64 R64_novlan;
+        /* Received frames with a length of 127 octets */
+        __be64 R127_prio_0;
+        __be64 R127_prio_1;
+        __be64 R127_prio_2;
+        __be64 R127_prio_3;
+        __be64 R127_prio_4;
+        __be64 R127_prio_5;
+        __be64 R127_prio_6;
+        __be64 R127_prio_7;
+        __be64 R127_novlan;
+        /* Received frames with a length of 255 octets */
+        __be64 R255_prio_0;
+        __be64 R255_prio_1;
+        __be64 R255_prio_2;
+        __be64 R255_prio_3;
+        __be64 R255_prio_4;
+        __be64 R255_prio_5;
+        __be64 R255_prio_6;
+        __be64 R255_prio_7;
+        __be64 R255_novlan;
+        /* Received frames with a length of 511 octets */
+        __be64 R511_prio_0;
+        __be64 R511_prio_1;
+        __be64 R511_prio_2;
+        __be64 R511_prio_3;
+        __be64 R511_prio_4;
+        __be64 R511_prio_5;
+        __be64 R511_prio_6;
+        __be64 R511_prio_7;
+        __be64 R511_novlan;
+        /* Received frames with a length of 1023 octets */
+        __be64 R1023_prio_0;
+        __be64 R1023_prio_1;
+        __be64 R1023_prio_2;
+        __be64 R1023_prio_3;
+        __be64 R1023_prio_4;
+        __be64 R1023_prio_5;
+        __be64 R1023_prio_6;
+        __be64 R1023_prio_7;
+        __be64 R1023_novlan;
+        /* Received frames with a length of 1518 octets */
+        __be64 R1518_prio_0;
+        __be64 R1518_prio_1;
+        __be64 R1518_prio_2;
+        __be64 R1518_prio_3;
+        __be64 R1518_prio_4;
+        __be64 R1518_prio_5;
+        __be64 R1518_prio_6;
+        __be64 R1518_prio_7;
+        __be64 R1518_novlan;
+        /* Received frames with a length of 1522 octets */
+        __be64 R1522_prio_0;
+        __be64 R1522_prio_1;
+        __be64 R1522_prio_2;
+        __be64 R1522_prio_3;
+        __be64 R1522_prio_4;
+        __be64 R1522_prio_5;
+        __be64 R1522_prio_6;
+        __be64 R1522_prio_7;
+        __be64 R1522_novlan;
+        /* Received frames with a length of 1548 octets */
+        __be64 R1548_prio_0;
+        __be64 R1548_prio_1;
+        __be64 R1548_prio_2;
+        __be64 R1548_prio_3;
+        __be64 R1548_prio_4;
+        __be64 R1548_prio_5;
+        __be64 R1548_prio_6;
+        __be64 R1548_prio_7;
+        __be64 R1548_novlan;
+        /* Received frames with a length of 1548 < octets < MTU */
+        __be64 R2MTU_prio_0;
+        __be64 R2MTU_prio_1;
+        __be64 R2MTU_prio_2;
+        __be64 R2MTU_prio_3;
+        __be64 R2MTU_prio_4;
+        __be64 R2MTU_prio_5;
+        __be64 R2MTU_prio_6;
+        __be64 R2MTU_prio_7;
+        __be64 R2MTU_novlan;
+        /* Received frames with a length of MTU< octets and good CRC */
+        __be64 RGIANT_prio_0;
+        __be64 RGIANT_prio_1;
+        __be64 RGIANT_prio_2;
+        __be64 RGIANT_prio_3;
+        __be64 RGIANT_prio_4;
+        __be64 RGIANT_prio_5;
+        __be64 RGIANT_prio_6;
+        __be64 RGIANT_prio_7;
+        __be64 RGIANT_novlan;
+        /* Received broadcast frames with good CRC */
+        __be64 RBCAST_prio_0;
+        __be64 RBCAST_prio_1;
+        __be64 RBCAST_prio_2;
+        __be64 RBCAST_prio_3;
+        __be64 RBCAST_prio_4;
+        __be64 RBCAST_prio_5;
+        __be64 RBCAST_prio_6;
+        __be64 RBCAST_prio_7;
+        __be64 RBCAST_novlan;
+        /* Received multicast frames with good CRC */
+        __be64 MCAST_prio_0;
+        __be64 MCAST_prio_1;
+        __be64 MCAST_prio_2;
+        __be64 MCAST_prio_3;
+        __be64 MCAST_prio_4;
+        __be64 MCAST_prio_5;
+        __be64 MCAST_prio_6;
+        __be64 MCAST_prio_7;
+        __be64 MCAST_novlan;
+        /* Received unicast not short or GIANT frames with good CRC */
+        __be64 RTOTG_prio_0;
+        __be64 RTOTG_prio_1;
+        __be64 RTOTG_prio_2;
+        __be64 RTOTG_prio_3;
+        __be64 RTOTG_prio_4;
+        __be64 RTOTG_prio_5;
+        __be64 RTOTG_prio_6;
+        __be64 RTOTG_prio_7;
+        __be64 RTOTG_novlan;
+
+        /* Count of total octets of received frames, includes framing characters */
+        __be64 RTTLOCT_prio_0;
+        /* Count of total octets of received frames, not including framing
+           characters */
+        __be64 RTTLOCT_NOFRM_prio_0;
+        /* Count of Total number of octets received
+           (only for frames without errors) */
+        __be64 ROCT_prio_0;
+
+        __be64 RTTLOCT_prio_1;
+        __be64 RTTLOCT_NOFRM_prio_1;
+        __be64 ROCT_prio_1;
+
+        __be64 RTTLOCT_prio_2;
+        __be64 RTTLOCT_NOFRM_prio_2;
+        __be64 ROCT_prio_2;
+
+        __be64 RTTLOCT_prio_3;
+        __be64 RTTLOCT_NOFRM_prio_3;
+        __be64 ROCT_prio_3;
+
+        __be64 RTTLOCT_prio_4;
+        __be64 RTTLOCT_NOFRM_prio_4;
+        __be64 ROCT_prio_4;
+
+        __be64 RTTLOCT_prio_5;
+        __be64 RTTLOCT_NOFRM_prio_5;
+        __be64 ROCT_prio_5;
+
+        __be64 RTTLOCT_prio_6;
+        __be64 RTTLOCT_NOFRM_prio_6;
+        __be64 ROCT_prio_6;
+
+        __be64 RTTLOCT_prio_7;
+        __be64 RTTLOCT_NOFRM_prio_7;
+        __be64 ROCT_prio_7;
+
+        __be64 RTTLOCT_novlan;
+        __be64 RTTLOCT_NOFRM_novlan;
+        __be64 ROCT_novlan;
+
+        /* Count of Total received frames including bad frames */
+        __be64 RTOT_prio_0;
+        /* Count of  Total number of received frames with 802.1Q encapsulation */
+        __be64 R1Q_prio_0;
+        __be64 reserved1;
+
+        __be64 RTOT_prio_1;
+        __be64 R1Q_prio_1;
+        __be64 reserved2;
+
+        __be64 RTOT_prio_2;
+        __be64 R1Q_prio_2;
+        __be64 reserved3;
+
+        __be64 RTOT_prio_3;
+        __be64 R1Q_prio_3;
+        __be64 reserved4;
+
+        __be64 RTOT_prio_4;
+        __be64 R1Q_prio_4;
+        __be64 reserved5;
+
+        __be64 RTOT_prio_5;
+        __be64 R1Q_prio_5;
+        __be64 reserved6;
+
+        __be64 RTOT_prio_6;
+        __be64 R1Q_prio_6;
+        __be64 reserved7;
+
+        __be64 RTOT_prio_7;
+        __be64 R1Q_prio_7;
+        __be64 reserved8;
+
+        __be64 RTOT_novlan;
+        __be64 R1Q_novlan;
+        __be64 reserved9;
+
+        /* Total number of Successfully Received Control Frames */
+        __be64 RCNTL;
+        __be64 reserved10;
+        __be64 reserved11;
+        __be64 reserved12;
+        /* Count of received frames with a length/type field  value between 46
+           (42 for VLANtagged frames) and 1500 (also 1500 for VLAN-tagged frames),
+           inclusive */
+        __be64 RInRangeLengthErr;
+        /* Count of received frames with length/type field between 1501 and 1535
+           decimal, inclusive */
+        __be64 ROutRangeLengthErr;
+        /* Count of received frames that are longer than max allowed size for
+           802.3 frames (1518/1522) */
+        __be64 RFrmTooLong;
+        /* Count frames received with PCS error */
+        __be64 PCS;
+
+        /* Transmit frames with a length of 64 octets */
+        __be64 T64_prio_0;
+        __be64 T64_prio_1;
+        __be64 T64_prio_2;
+        __be64 T64_prio_3;
+        __be64 T64_prio_4;
+        __be64 T64_prio_5;
+        __be64 T64_prio_6;
+        __be64 T64_prio_7;
+        __be64 T64_novlan;
+        __be64 T64_loopbk;
+        /* Transmit frames with a length of 65 to 127 octets. */
+        __be64 T127_prio_0;
+        __be64 T127_prio_1;
+        __be64 T127_prio_2;
+        __be64 T127_prio_3;
+        __be64 T127_prio_4;
+        __be64 T127_prio_5;
+        __be64 T127_prio_6;
+        __be64 T127_prio_7;
+        __be64 T127_novlan;
+        __be64 T127_loopbk;
+        /* Transmit frames with a length of 128 to 255 octets */
+        __be64 T255_prio_0;
+        __be64 T255_prio_1;
+        __be64 T255_prio_2;
+        __be64 T255_prio_3;
+        __be64 T255_prio_4;
+        __be64 T255_prio_5;
+        __be64 T255_prio_6;
+        __be64 T255_prio_7;
+        __be64 T255_novlan;
+        __be64 T255_loopbk;
+        /* Transmit frames with a length of 256 to 511 octets */
+        __be64 T511_prio_0;
+        __be64 T511_prio_1;
+        __be64 T511_prio_2;
+        __be64 T511_prio_3;
+        __be64 T511_prio_4;
+        __be64 T511_prio_5;
+        __be64 T511_prio_6;
+        __be64 T511_prio_7;
+        __be64 T511_novlan;
+        __be64 T511_loopbk;
+        /* Transmit frames with a length of 512 to 1023 octets */
+        __be64 T1023_prio_0;
+        __be64 T1023_prio_1;
+        __be64 T1023_prio_2;
+        __be64 T1023_prio_3;
+        __be64 T1023_prio_4;
+        __be64 T1023_prio_5;
+        __be64 T1023_prio_6;
+        __be64 T1023_prio_7;
+        __be64 T1023_novlan;
+        __be64 T1023_loopbk;
+        /* Transmit frames with a length of 1024 to 1518 octets */
+        __be64 T1518_prio_0;
+        __be64 T1518_prio_1;
+        __be64 T1518_prio_2;
+        __be64 T1518_prio_3;
+        __be64 T1518_prio_4;
+        __be64 T1518_prio_5;
+        __be64 T1518_prio_6;
+        __be64 T1518_prio_7;
+        __be64 T1518_novlan;
+        __be64 T1518_loopbk;
+        /* Counts transmit frames with a length of 1519 to 1522 bytes */
+        __be64 T1522_prio_0;
+        __be64 T1522_prio_1;
+        __be64 T1522_prio_2;
+        __be64 T1522_prio_3;
+        __be64 T1522_prio_4;
+        __be64 T1522_prio_5;
+        __be64 T1522_prio_6;
+        __be64 T1522_prio_7;
+        __be64 T1522_novlan;
+        __be64 T1522_loopbk;
+        /* Transmit frames with a length of 1523 to 1548 octets */
+        __be64 T1548_prio_0;
+        __be64 T1548_prio_1;
+        __be64 T1548_prio_2;
+        __be64 T1548_prio_3;
+        __be64 T1548_prio_4;
+        __be64 T1548_prio_5;
+        __be64 T1548_prio_6;
+        __be64 T1548_prio_7;
+        __be64 T1548_novlan;
+        __be64 T1548_loopbk;
+        /* Counts transmit frames with a length of 1549 to MTU bytes */
+        __be64 T2MTU_prio_0;
+        __be64 T2MTU_prio_1;
+        __be64 T2MTU_prio_2;
+        __be64 T2MTU_prio_3;
+        __be64 T2MTU_prio_4;
+        __be64 T2MTU_prio_5;
+        __be64 T2MTU_prio_6;
+        __be64 T2MTU_prio_7;
+        __be64 T2MTU_novlan;
+        __be64 T2MTU_loopbk;
+        /* Transmit frames with a length greater than MTU octets and a good CRC. */
+        __be64 TGIANT_prio_0;
+        __be64 TGIANT_prio_1;
+        __be64 TGIANT_prio_2;
+        __be64 TGIANT_prio_3;
+        __be64 TGIANT_prio_4;
+        __be64 TGIANT_prio_5;
+        __be64 TGIANT_prio_6;
+        __be64 TGIANT_prio_7;
+        __be64 TGIANT_novlan;
+        __be64 TGIANT_loopbk;
+        /* Transmit broadcast frames with a good CRC */
+        __be64 TBCAST_prio_0;
+        __be64 TBCAST_prio_1;
+        __be64 TBCAST_prio_2;
+        __be64 TBCAST_prio_3;
+        __be64 TBCAST_prio_4;
+        __be64 TBCAST_prio_5;
+        __be64 TBCAST_prio_6;
+        __be64 TBCAST_prio_7;
+        __be64 TBCAST_novlan;
+        __be64 TBCAST_loopbk;
+        /* Transmit multicast frames with a good CRC */
+        __be64 TMCAST_prio_0;
+        __be64 TMCAST_prio_1;
+        __be64 TMCAST_prio_2;
+        __be64 TMCAST_prio_3;
+        __be64 TMCAST_prio_4;
+        __be64 TMCAST_prio_5;
+        __be64 TMCAST_prio_6;
+        __be64 TMCAST_prio_7;
+        __be64 TMCAST_novlan;
+        __be64 TMCAST_loopbk;
+        /* Transmit good frames that are neither broadcast nor multicast */
+        __be64 TTOTG_prio_0;
+        __be64 TTOTG_prio_1;
+        __be64 TTOTG_prio_2;
+        __be64 TTOTG_prio_3;
+        __be64 TTOTG_prio_4;
+        __be64 TTOTG_prio_5;
+        __be64 TTOTG_prio_6;
+        __be64 TTOTG_prio_7;
+        __be64 TTOTG_novlan;
+        __be64 TTOTG_loopbk;
+
+        /* total octets of transmitted frames, including framing characters */
+        __be64 TTTLOCT_prio_0;
+        /* total octets of transmitted frames, not including framing characters */
+        __be64 TTTLOCT_NOFRM_prio_0;
+        /* ifOutOctets */
+        __be64 TOCT_prio_0;
+
+        __be64 TTTLOCT_prio_1;
+        __be64 TTTLOCT_NOFRM_prio_1;
+        __be64 TOCT_prio_1;
+
+        __be64 TTTLOCT_prio_2;
+        __be64 TTTLOCT_NOFRM_prio_2;
+        __be64 TOCT_prio_2;
+
+        __be64 TTTLOCT_prio_3;
+        __be64 TTTLOCT_NOFRM_prio_3;
+        __be64 TOCT_prio_3;
+
+        __be64 TTTLOCT_prio_4;
+        __be64 TTTLOCT_NOFRM_prio_4;
+        __be64 TOCT_prio_4;
+
+        __be64 TTTLOCT_prio_5;
+        __be64 TTTLOCT_NOFRM_prio_5;
+        __be64 TOCT_prio_5;
+
+        __be64 TTTLOCT_prio_6;
+        __be64 TTTLOCT_NOFRM_prio_6;
+        __be64 TOCT_prio_6;
+
+        __be64 TTTLOCT_prio_7;
+        __be64 TTTLOCT_NOFRM_prio_7;
+        __be64 TOCT_prio_7;
+
+        __be64 TTTLOCT_novlan;
+        __be64 TTTLOCT_NOFRM_novlan;
+        __be64 TOCT_novlan;
+
+        __be64 TTTLOCT_loopbk;
+        __be64 TTTLOCT_NOFRM_loopbk;
+        __be64 TOCT_loopbk;
+
+        /* Total frames transmitted with a good CRC that are not aborted  */
+        __be64 TTOT_prio_0;
+        /* Total number of frames transmitted with 802.1Q encapsulation */
+        __be64 T1Q_prio_0;
+        __be64 reserved13;
+
+        __be64 TTOT_prio_1;
+        __be64 T1Q_prio_1;
+        __be64 reserved14;
+
+        __be64 TTOT_prio_2;
+        __be64 T1Q_prio_2;
+        __be64 reserved15;
+
+        __be64 TTOT_prio_3;
+        __be64 T1Q_prio_3;
+        __be64 reserved16;
+
+        __be64 TTOT_prio_4;
+        __be64 T1Q_prio_4;
+        __be64 reserved17;
+
+        __be64 TTOT_prio_5;
+        __be64 T1Q_prio_5;
+        __be64 reserved18;
+
+        __be64 TTOT_prio_6;
+        __be64 T1Q_prio_6;
+        __be64 reserved19;
+
+        __be64 TTOT_prio_7;
+        __be64 T1Q_prio_7;
+        __be64 reserved20;
+
+        __be64 TTOT_novlan;
+        __be64 T1Q_novlan;
+        __be64 reserved21;
+
+        __be64 TTOT_loopbk;
+        __be64 T1Q_loopbk;
+        __be64 reserved22;
+
+        /* Received frames with a length greater than MTU octets and a bad CRC */
+        __be32 RJBBR;
+        /* Received frames with a bad CRC that are not runts, jabbers,
+           or alignment errors */
+        __be32 RCRC;
+        /* Received frames with SFD with a length of less than 64 octets and a
+           bad CRC */
+        __be32 RRUNT;
+        /* Received frames with a length less than 64 octets and a good CRC */
+        __be32 RSHORT;
+        /* Total Number of Received Packets Dropped */
+        __be32 RDROP;
+        /* Drop due to overflow  */
+        __be32 RdropOvflw;
+        /* Drop due to overflow */
+        __be32 RdropLength;
+        /* Total of good frames. Does not include frames received with
+           frame-too-long, FCS, or length errors */
+        __be32 RTOTFRMS;
+        /* Total dropped Xmited packets */
+        __be32 TDROP;
+};
+
+
+#endif
diff --git a/drivers/net/mlx4/en_resources.c b/drivers/net/mlx4/en_resources.c
new file mode 100644
index 000000000000..a0545209e507
--- /dev/null
+++ b/drivers/net/mlx4/en_resources.c
@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#include <linux/vmalloc.h>
+#include <linux/mlx4/qp.h>
+
+#include "mlx4_en.h"
+
+void mlx4_en_fill_qp_context(struct mlx4_en_priv *priv, int size, int stride,
+                             int is_tx, int rss, int qpn, int cqn, int srqn,
+                             struct mlx4_qp_context *context)
+{
+        struct mlx4_en_dev *mdev = priv->mdev;
+
+        memset(context, 0, sizeof *context);
+        context->flags = cpu_to_be32(7 << 16 | rss << 13);
+        context->pd = cpu_to_be32(mdev->priv_pdn);
+        context->mtu_msgmax = 0xff;
+        context->rq_size_stride = 0;
+        if (is_tx)
+                context->sq_size_stride = ilog2(size) << 3 | (ilog2(stride) - 4);
+        else
+                context->sq_size_stride = 1;
+        context->usr_page = cpu_to_be32(mdev->priv_uar.index);
+        context->local_qpn = cpu_to_be32(qpn);
+        context->pri_path.ackto = 1 & 0x07;
+        context->pri_path.sched_queue = 0x83 | (priv->port - 1) << 6;
+        context->pri_path.counter_index = 0xff;
+        context->cqn_send = cpu_to_be32(cqn);
+        context->cqn_recv = cpu_to_be32(cqn);
+        context->db_rec_addr = cpu_to_be64(priv->res.db.dma << 2);
+        if (!rss)
+                context->srqn = cpu_to_be32(MLX4_EN_USE_SRQ | srqn);
+}
+
+
+int mlx4_en_map_buffer(struct mlx4_buf *buf)
+{
+        struct page **pages;
+        int i;
+
+        if (BITS_PER_LONG == 64 || buf->nbufs == 1)
+                return 0;
+
+        pages = kmalloc(sizeof *pages * buf->nbufs, GFP_KERNEL);
+        if (!pages)
+                return -ENOMEM;
+
+        for (i = 0; i < buf->nbufs; ++i)
+                pages[i] = virt_to_page(buf->page_list[i].buf);
+
+        buf->direct.buf = vmap(pages, buf->nbufs, VM_MAP, PAGE_KERNEL);
+        kfree(pages);
+        if (!buf->direct.buf)
+                return -ENOMEM;
+
+        return 0;
+}
+
+void mlx4_en_unmap_buffer(struct mlx4_buf *buf)
+{
+        if (BITS_PER_LONG == 64 || buf->nbufs == 1)
+                return;
+
+        vunmap(buf->direct.buf);
+}
diff --git a/drivers/net/mlx4/en_rx.c b/drivers/net/mlx4/en_rx.c
new file mode 100644
index 000000000000..6232227f56c3
--- /dev/null
+++ b/drivers/net/mlx4/en_rx.c
@@ -0,0 +1,1080 @@
+/*
+ * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#include <linux/mlx4/cq.h>
+#include <linux/mlx4/qp.h>
+#include <linux/skbuff.h>
+#include <linux/if_ether.h>
+#include <linux/if_vlan.h>
+#include <linux/vmalloc.h>
+
+#include "mlx4_en.h"
+
+static void *get_wqe(struct mlx4_en_rx_ring *ring, int n)
+{
+        int offset = n << ring->srq.wqe_shift;
+        return ring->buf + offset;
+}
+
+static void mlx4_en_srq_event(struct mlx4_srq *srq, enum mlx4_event type)
+{
+        return;
+}
+
+static int mlx4_en_get_frag_header(struct skb_frag_struct *frags, void **mac_hdr,
+                                   void **ip_hdr, void **tcpudp_hdr,
+                                   u64 *hdr_flags, void *priv)
+{
+        *mac_hdr = page_address(frags->page) + frags->page_offset;
+        *ip_hdr = *mac_hdr + ETH_HLEN;
+        *tcpudp_hdr = (struct tcphdr *)(*ip_hdr + sizeof(struct iphdr));
+        *hdr_flags = LRO_IPV4 | LRO_TCP;
+
+        return 0;
+}
+
+static int mlx4_en_alloc_frag(struct mlx4_en_priv *priv,
+                              struct mlx4_en_rx_desc *rx_desc,
+                              struct skb_frag_struct *skb_frags,
+                              struct mlx4_en_rx_alloc *ring_alloc,
+                              int i)
+{
+        struct mlx4_en_dev *mdev = priv->mdev;
+        struct mlx4_en_frag_info *frag_info = &priv->frag_info[i];
+        struct mlx4_en_rx_alloc *page_alloc = &ring_alloc[i];
+        struct page *page;
+        dma_addr_t dma;
+
+        if (page_alloc->offset == frag_info->last_offset) {
+                /* Allocate new page */
+                page = alloc_pages(GFP_ATOMIC | __GFP_COMP, MLX4_EN_ALLOC_ORDER);
+                if (!page)
+                        return -ENOMEM;
+
+                skb_frags[i].page = page_alloc->page;
+                skb_frags[i].page_offset = page_alloc->offset;
+                page_alloc->page = page;
+                page_alloc->offset = frag_info->frag_align;
+        } else {
+                page = page_alloc->page;
+                get_page(page);
+
+                skb_frags[i].page = page;
+                skb_frags[i].page_offset = page_alloc->offset;
+                page_alloc->offset += frag_info->frag_stride;
+        }
+        dma = pci_map_single(mdev->pdev, page_address(skb_frags[i].page) +
+                             skb_frags[i].page_offset, frag_info->frag_size,
+                             PCI_DMA_FROMDEVICE);
+        rx_desc->data[i].addr = cpu_to_be64(dma);
+        return 0;
+}
+
+static int mlx4_en_init_allocator(struct mlx4_en_priv *priv,
+                                  struct mlx4_en_rx_ring *ring)
+{
+        struct mlx4_en_rx_alloc *page_alloc;
+        int i;
+
+        for (i = 0; i < priv->num_frags; i++) {
+                page_alloc = &ring->page_alloc[i];
+                page_alloc->page = alloc_pages(GFP_ATOMIC | __GFP_COMP,
+                                               MLX4_EN_ALLOC_ORDER);
+                if (!page_alloc->page)
+                        goto out;
+
+                page_alloc->offset = priv->frag_info[i].frag_align;
+                mlx4_dbg(DRV, priv, "Initialized allocator:%d with page:%p\n",
+                         i, page_alloc->page);
+        }
+        return 0;
+
+out:
+        while (i--) {
+                page_alloc = &ring->page_alloc[i];
+                put_page(page_alloc->page);
+                page_alloc->page = NULL;
+        }
+        return -ENOMEM;
+}
+
+static void mlx4_en_destroy_allocator(struct mlx4_en_priv *priv,
+                                      struct mlx4_en_rx_ring *ring)
+{
+        struct mlx4_en_rx_alloc *page_alloc;
+        int i;
+
+        for (i = 0; i < priv->num_frags; i++) {
+                page_alloc = &ring->page_alloc[i];
+                mlx4_dbg(DRV, priv, "Freeing allocator:%d count:%d\n",
+                         i, page_count(page_alloc->page));
+
+                put_page(page_alloc->page);
+                page_alloc->page = NULL;
+        }
+}
+
+
+static void mlx4_en_init_rx_desc(struct mlx4_en_priv *priv,
+                                 struct mlx4_en_rx_ring *ring, int index)
+{
+        struct mlx4_en_rx_desc *rx_desc = ring->buf + ring->stride * index;
+        struct skb_frag_struct *skb_frags = ring->rx_info +
+                                            (index << priv->log_rx_info);
+        int possible_frags;
+        int i;
+
+        /* Pre-link descriptor */
+        rx_desc->next.next_wqe_index = cpu_to_be16((index + 1) & ring->size_mask);
+
+        /* Set size and memtype fields */
+        for (i = 0; i < priv->num_frags; i++) {
+                skb_frags[i].size = priv->frag_info[i].frag_size;
+                rx_desc->data[i].byte_count =
+                        cpu_to_be32(priv->frag_info[i].frag_size);
+                rx_desc->data[i].lkey = cpu_to_be32(priv->mdev->mr.key);
+        }
+
+        /* If the number of used fragments does not fill up the ring stride,
+         * remaining (unused) fragments must be padded with null address/size
+         * and a special memory key */
+        possible_frags = (ring->stride - sizeof(struct mlx4_en_rx_desc)) / DS_SIZE;
+        for (i = priv->num_frags; i < possible_frags; i++) {
+                rx_desc->data[i].byte_count = 0;
+                rx_desc->data[i].lkey = cpu_to_be32(MLX4_EN_MEMTYPE_PAD);
+                rx_desc->data[i].addr = 0;
+        }
+}
+
+
+static int mlx4_en_prepare_rx_desc(struct mlx4_en_priv *priv,
+                                   struct mlx4_en_rx_ring *ring, int index)
+{
+        struct mlx4_en_rx_desc *rx_desc = ring->buf + (index * ring->stride);
+        struct skb_frag_struct *skb_frags = ring->rx_info +
+                                            (index << priv->log_rx_info);
+        int i;
+
+        for (i = 0; i < priv->num_frags; i++)
+                if (mlx4_en_alloc_frag(priv, rx_desc, skb_frags, ring->page_alloc, i))
+                        goto err;
+
+        return 0;
+
+err:
+        while (i--)
+                put_page(skb_frags[i].page);
+        return -ENOMEM;
+}
+
+static inline void mlx4_en_update_rx_prod_db(struct mlx4_en_rx_ring *ring)
+{
+        *ring->wqres.db.db = cpu_to_be32(ring->prod & 0xffff);
+}
+
+static int mlx4_en_fill_rx_buffers(struct mlx4_en_priv *priv)
+{
+        struct mlx4_en_dev *mdev = priv->mdev;
+        struct mlx4_en_rx_ring *ring;
+        int ring_ind;
+        int buf_ind;
+
+        for (buf_ind = 0; buf_ind < priv->prof->rx_ring_size; buf_ind++) {
+                for (ring_ind = 0; ring_ind < priv->rx_ring_num; ring_ind++) {
+                        ring = &priv->rx_ring[ring_ind];
+
+                        if (mlx4_en_prepare_rx_desc(priv, ring,
+                                                    ring->actual_size)) {
+                                if (ring->actual_size < MLX4_EN_MIN_RX_SIZE) {
+                                        mlx4_err(mdev, "Failed to allocate "
+                                                       "enough rx buffers\n");
+                                        return -ENOMEM;
+                                } else {
+                                        if (netif_msg_rx_err(priv))
+                                                mlx4_warn(mdev,
+                                                          "Only %d buffers allocated\n",
+                                                          ring->actual_size);
+                                        goto out;
+                                }
+                        }
+                        ring->actual_size++;
+                        ring->prod++;
+                }
+        }
+out:
+        return 0;
+}
+
+static int mlx4_en_fill_rx_buf(struct net_device *dev,
+                               struct mlx4_en_rx_ring *ring)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        int num = 0;
+        int err;
+
+        while ((u32) (ring->prod - ring->cons) < ring->actual_size) {
+                err = mlx4_en_prepare_rx_desc(priv, ring, ring->prod &
+                                              ring->size_mask);
+                if (err) {
+                        if (netif_msg_rx_err(priv))
+                                mlx4_warn(priv->mdev,
+                                          "Failed preparing rx descriptor\n");
+                        priv->port_stats.rx_alloc_failed++;
+                        break;
+                }
+                ++num;
+                ++ring->prod;
+        }
+        if ((u32) (ring->prod - ring->cons) == ring->size)
+                ring->full = 1;
+
+        return num;
+}
+
+static void mlx4_en_free_rx_buf(struct mlx4_en_priv *priv,
+                                struct mlx4_en_rx_ring *ring)
+{
+        struct mlx4_en_dev *mdev = priv->mdev;
+        struct skb_frag_struct *skb_frags;
+        struct mlx4_en_rx_desc *rx_desc;
+        dma_addr_t dma;
+        int index;
+        int nr;
+
+        mlx4_dbg(DRV, priv, "Freeing Rx buf - cons:%d prod:%d\n",
+                        ring->cons, ring->prod);
+
+        /* Unmap and free Rx buffers */
+        BUG_ON((u32) (ring->prod - ring->cons) > ring->size);
+        while (ring->cons != ring->prod) {
+                index = ring->cons & ring->size_mask;
+                rx_desc = ring->buf + (index << ring->log_stride);
+                skb_frags = ring->rx_info + (index << priv->log_rx_info);
+                mlx4_dbg(DRV, priv, "Processing descriptor:%d\n", index);
+
+                for (nr = 0; nr < priv->num_frags; nr++) {
+                        mlx4_dbg(DRV, priv, "Freeing fragment:%d\n", nr);
+                        dma = be64_to_cpu(rx_desc->data[nr].addr);
+
+                        mlx4_dbg(DRV, priv, "Unmaping buffer at dma:0x%llx\n", (u64) dma);
+                        pci_unmap_single(mdev->pdev, dma, skb_frags[nr].size,
+                                         PCI_DMA_FROMDEVICE);
+                        put_page(skb_frags[nr].page);
+                }
+                ++ring->cons;
+        }
+}
+
+
+void mlx4_en_rx_refill(struct work_struct *work)
+{
+        struct delayed_work *delay = container_of(work, struct delayed_work, work);
+        struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
+                                                 refill_task);
+        struct mlx4_en_dev *mdev = priv->mdev;
+        struct net_device *dev = priv->dev;
+        struct mlx4_en_rx_ring *ring;
+        int need_refill = 0;
+        int i;
+
+        mutex_lock(&mdev->state_lock);
+        if (!mdev->device_up || !priv->port_up)
+                goto out;
+
+        /* We only get here if there are no receive buffers, so we can't race
+         * with Rx interrupts while filling buffers */
+        for (i = 0; i < priv->rx_ring_num; i++) {
+                ring = &priv->rx_ring[i];
+                if (ring->need_refill) {
+                        if (mlx4_en_fill_rx_buf(dev, ring)) {
+                                ring->need_refill = 0;
+                                mlx4_en_update_rx_prod_db(ring);
+                        } else
+                                need_refill = 1;
+                }
+        }
+        if (need_refill)
+                queue_delayed_work(mdev->workqueue, &priv->refill_task, HZ);
+
+out:
+        mutex_unlock(&mdev->state_lock);
+}
+
+
+int mlx4_en_create_rx_ring(struct mlx4_en_priv *priv,
+                           struct mlx4_en_rx_ring *ring, u32 size, u16 stride)
+{
+        struct mlx4_en_dev *mdev = priv->mdev;
+        int err;
+        int tmp;
+
+        /* Sanity check SRQ size before proceeding */
+        if (size >= mdev->dev->caps.max_srq_wqes)
+                return -EINVAL;
+
+        ring->prod = 0;
+        ring->cons = 0;
+        ring->size = size;
+        ring->size_mask = size - 1;
+        ring->stride = stride;
+        ring->log_stride = ffs(ring->stride) - 1;
+        ring->buf_size = ring->size * ring->stride;
+
+        tmp = size * roundup_pow_of_two(MLX4_EN_MAX_RX_FRAGS *
+                                        sizeof(struct skb_frag_struct));
+        ring->rx_info = vmalloc(tmp);
+        if (!ring->rx_info) {
+                mlx4_err(mdev, "Failed allocating rx_info ring\n");
+                return -ENOMEM;
+        }
+        mlx4_dbg(DRV, priv, "Allocated rx_info ring at addr:%p size:%d\n",
+                 ring->rx_info, tmp);
+
+        err = mlx4_alloc_hwq_res(mdev->dev, &ring->wqres,
+                                 ring->buf_size, 2 * PAGE_SIZE);
+        if (err)
+                goto err_ring;
+
+        err = mlx4_en_map_buffer(&ring->wqres.buf);
+        if (err) {
+                mlx4_err(mdev, "Failed to map RX buffer\n");
+                goto err_hwq;
+        }
+        ring->buf = ring->wqres.buf.direct.buf;
+
+        /* Configure lro mngr */
+        memset(&ring->lro, 0, sizeof(struct net_lro_mgr));
+        ring->lro.dev = priv->dev;
+        ring->lro.features = LRO_F_NAPI;
+        ring->lro.frag_align_pad = NET_IP_ALIGN;
+        ring->lro.ip_summed = CHECKSUM_UNNECESSARY;
+        ring->lro.ip_summed_aggr = CHECKSUM_UNNECESSARY;
+        ring->lro.max_desc = mdev->profile.num_lro;
+        ring->lro.max_aggr = MAX_SKB_FRAGS;
+        ring->lro.lro_arr = kzalloc(mdev->profile.num_lro *
+                                    sizeof(struct net_lro_desc),
+                                    GFP_KERNEL);
+        if (!ring->lro.lro_arr) {
+                mlx4_err(mdev, "Failed to allocate lro array\n");
+                goto err_map;
+        }
+        ring->lro.get_frag_header = mlx4_en_get_frag_header;
+
+        return 0;
+
+err_map:
+        mlx4_en_unmap_buffer(&ring->wqres.buf);
+err_hwq:
+        mlx4_free_hwq_res(mdev->dev, &ring->wqres, ring->buf_size);
+err_ring:
+        vfree(ring->rx_info);
+        ring->rx_info = NULL;
+        return err;
+}
+
+int mlx4_en_activate_rx_rings(struct mlx4_en_priv *priv)
+{
+        struct mlx4_en_dev *mdev = priv->mdev;
+        struct mlx4_wqe_srq_next_seg *next;
+        struct mlx4_en_rx_ring *ring;
+        int i;
+        int ring_ind;
+        int err;
+        int stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
+                                        DS_SIZE * priv->num_frags);
+        int max_gs = (stride - sizeof(struct mlx4_wqe_srq_next_seg)) / DS_SIZE;
+
+        for (ring_ind = 0; ring_ind < priv->rx_ring_num; ring_ind++) {
+                ring = &priv->rx_ring[ring_ind];
+
+                ring->prod = 0;
+                ring->cons = 0;
+                ring->actual_size = 0;
+                ring->cqn = priv->rx_cq[ring_ind].mcq.cqn;
+
+                ring->stride = stride;
+                ring->log_stride = ffs(ring->stride) - 1;
+                ring->buf_size = ring->size * ring->stride;
+
+                memset(ring->buf, 0, ring->buf_size);
+                mlx4_en_update_rx_prod_db(ring);
+
+                /* Initailize all descriptors */
+                for (i = 0; i < ring->size; i++)
+                        mlx4_en_init_rx_desc(priv, ring, i);
+
+                /* Initialize page allocators */
+                err = mlx4_en_init_allocator(priv, ring);
+                if (err) {
+                         mlx4_err(mdev, "Failed initializing ring allocator\n");
+                         goto err_allocator;
+                }
+
+                /* Fill Rx buffers */
+                ring->full = 0;
+        }
+        if (mlx4_en_fill_rx_buffers(priv))
+                goto err_buffers;
+
+        for (ring_ind = 0; ring_ind < priv->rx_ring_num; ring_ind++) {
+                ring = &priv->rx_ring[ring_ind];
+
+                mlx4_en_update_rx_prod_db(ring);
+
+                /* Configure SRQ representing the ring */
+                ring->srq.max    = ring->size;
+                ring->srq.max_gs = max_gs;
+                ring->srq.wqe_shift = ilog2(ring->stride);
+
+                for (i = 0; i < ring->srq.max; ++i) {
+                        next = get_wqe(ring, i);
+                        next->next_wqe_index =
+                        cpu_to_be16((i + 1) & (ring->srq.max - 1));
+                }
+
+                err = mlx4_srq_alloc(mdev->dev, mdev->priv_pdn, &ring->wqres.mtt,
+                                     ring->wqres.db.dma, &ring->srq);
+                if (err){
+                        mlx4_err(mdev, "Failed to allocate srq\n");
+                        goto err_srq;
+                }
+                ring->srq.event = mlx4_en_srq_event;
+        }
+
+        return 0;
+
+err_srq:
+        while (ring_ind >= 0) {
+                ring = &priv->rx_ring[ring_ind];
+                mlx4_srq_free(mdev->dev, &ring->srq);
+                ring_ind--;
+        }
+
+err_buffers:
+        for (ring_ind = 0; ring_ind < priv->rx_ring_num; ring_ind++)
+                mlx4_en_free_rx_buf(priv, &priv->rx_ring[ring_ind]);
+
+        ring_ind = priv->rx_ring_num - 1;
+err_allocator:
+        while (ring_ind >= 0) {
+                mlx4_en_destroy_allocator(priv, &priv->rx_ring[ring_ind]);
+                ring_ind--;
+        }
+        return err;
+}
+
+void mlx4_en_destroy_rx_ring(struct mlx4_en_priv *priv,
+                             struct mlx4_en_rx_ring *ring)
+{
+        struct mlx4_en_dev *mdev = priv->mdev;
+
+        kfree(ring->lro.lro_arr);
+        mlx4_en_unmap_buffer(&ring->wqres.buf);
+        mlx4_free_hwq_res(mdev->dev, &ring->wqres, ring->buf_size);
+        vfree(ring->rx_info);
+        ring->rx_info = NULL;
+}
+
+void mlx4_en_deactivate_rx_ring(struct mlx4_en_priv *priv,
+                                struct mlx4_en_rx_ring *ring)
+{
+        struct mlx4_en_dev *mdev = priv->mdev;
+
+        mlx4_srq_free(mdev->dev, &ring->srq);
+        mlx4_en_free_rx_buf(priv, ring);
+        mlx4_en_destroy_allocator(priv, ring);
+}
+
+
+/* Unmap a completed descriptor and free unused pages */
+static int mlx4_en_complete_rx_desc(struct mlx4_en_priv *priv,
+                                    struct mlx4_en_rx_desc *rx_desc,
+                                    struct skb_frag_struct *skb_frags,
+                                    struct skb_frag_struct *skb_frags_rx,
+                                    struct mlx4_en_rx_alloc *page_alloc,
+                                    int length)
+{
+        struct mlx4_en_dev *mdev = priv->mdev;
+        struct mlx4_en_frag_info *frag_info;
+        int nr;
+        dma_addr_t dma;
+
+        /* Collect used fragments while replacing them in the HW descirptors */
+        for (nr = 0; nr < priv->num_frags; nr++) {
+                frag_info = &priv->frag_info[nr];
+                if (length <= frag_info->frag_prefix_size)
+                        break;
+
+                /* Save page reference in skb */
+                skb_frags_rx[nr].page = skb_frags[nr].page;
+                skb_frags_rx[nr].size = skb_frags[nr].size;
+                skb_frags_rx[nr].page_offset = skb_frags[nr].page_offset;
+                dma = be64_to_cpu(rx_desc->data[nr].addr);
+
+                /* Allocate a replacement page */
+                if (mlx4_en_alloc_frag(priv, rx_desc, skb_frags, page_alloc, nr))
+                        goto fail;
+
+                /* Unmap buffer */
+                pci_unmap_single(mdev->pdev, dma, skb_frags[nr].size,
+                                 PCI_DMA_FROMDEVICE);
+        }
+        /* Adjust size of last fragment to match actual length */
+        skb_frags_rx[nr - 1].size = length -
+                priv->frag_info[nr - 1].frag_prefix_size;
+        return nr;
+
+fail:
+        /* Drop all accumulated fragments (which have already been replaced in
+         * the descriptor) of this packet; remaining fragments are reused... */
+        while (nr > 0) {
+                nr--;
+                put_page(skb_frags_rx[nr].page);
+        }
+        return 0;
+}
+
+
+static struct sk_buff *mlx4_en_rx_skb(struct mlx4_en_priv *priv,
+                                      struct mlx4_en_rx_desc *rx_desc,
+                                      struct skb_frag_struct *skb_frags,
+                                      struct mlx4_en_rx_alloc *page_alloc,
+                                      unsigned int length)
+{
+        struct mlx4_en_dev *mdev = priv->mdev;
+        struct sk_buff *skb;
+        void *va;
+        int used_frags;
+        dma_addr_t dma;
+
+        skb = dev_alloc_skb(SMALL_PACKET_SIZE + NET_IP_ALIGN);
+        if (!skb) {
+                mlx4_dbg(RX_ERR, priv, "Failed allocating skb\n");
+                return NULL;
+        }
+        skb->dev = priv->dev;
+        skb_reserve(skb, NET_IP_ALIGN);
+        skb->len = length;
+        skb->truesize = length + sizeof(struct sk_buff);
+
+        /* Get pointer to first fragment so we could copy the headers into the
+         * (linear part of the) skb */
+        va = page_address(skb_frags[0].page) + skb_frags[0].page_offset;
+
+        if (length <= SMALL_PACKET_SIZE) {
+                /* We are copying all relevant data to the skb - temporarily
+                 * synch buffers for the copy */
+                dma = be64_to_cpu(rx_desc->data[0].addr);
+                dma_sync_single_range_for_cpu(&mdev->pdev->dev, dma, 0,
+                                              length, DMA_FROM_DEVICE);
+                skb_copy_to_linear_data(skb, va, length);
+                dma_sync_single_range_for_device(&mdev->pdev->dev, dma, 0,
+                                                 length, DMA_FROM_DEVICE);
+                skb->tail += length;
+        } else {
+
+                /* Move relevant fragments to skb */
+                used_frags = mlx4_en_complete_rx_desc(priv, rx_desc, skb_frags,
+                                                      skb_shinfo(skb)->frags,
+                                                      page_alloc, length);
+                skb_shinfo(skb)->nr_frags = used_frags;
+
+                /* Copy headers into the skb linear buffer */
+                memcpy(skb->data, va, HEADER_COPY_SIZE);
+                skb->tail += HEADER_COPY_SIZE;
+
+                /* Skip headers in first fragment */
+                skb_shinfo(skb)->frags[0].page_offset += HEADER_COPY_SIZE;
+
+                /* Adjust size of first fragment */
+                skb_shinfo(skb)->frags[0].size -= HEADER_COPY_SIZE;
+                skb->data_len = length - HEADER_COPY_SIZE;
+        }
+        return skb;
+}
+
+static void mlx4_en_copy_desc(struct mlx4_en_priv *priv,
+                              struct mlx4_en_rx_ring *ring,
+                              int from, int to, int num)
+{
+        struct skb_frag_struct *skb_frags_from;
+        struct skb_frag_struct *skb_frags_to;
+        struct mlx4_en_rx_desc *rx_desc_from;
+        struct mlx4_en_rx_desc *rx_desc_to;
+        int from_index, to_index;
+        int nr, i;
+
+        for (i = 0; i < num; i++) {
+                from_index = (from + i) & ring->size_mask;
+                to_index = (to + i) & ring->size_mask;
+                skb_frags_from = ring->rx_info + (from_index << priv->log_rx_info);
+                skb_frags_to = ring->rx_info + (to_index << priv->log_rx_info);
+                rx_desc_from = ring->buf + (from_index << ring->log_stride);
+                rx_desc_to = ring->buf + (to_index << ring->log_stride);
+
+                for (nr = 0; nr < priv->num_frags; nr++) {
+                        skb_frags_to[nr].page = skb_frags_from[nr].page;
+                        skb_frags_to[nr].page_offset = skb_frags_from[nr].page_offset;
+                        rx_desc_to->data[nr].addr = rx_desc_from->data[nr].addr;
+                }
+        }
+}
+
+
+int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int budget)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        struct mlx4_en_dev *mdev = priv->mdev;
+        struct mlx4_cqe *cqe;
+        struct mlx4_en_rx_ring *ring = &priv->rx_ring[cq->ring];
+        struct skb_frag_struct *skb_frags;
+        struct skb_frag_struct lro_frags[MLX4_EN_MAX_RX_FRAGS];
+        struct mlx4_en_rx_desc *rx_desc;
+        struct sk_buff *skb;
+        int index;
+        int nr;
+        unsigned int length;
+        int polled = 0;
+        int ip_summed;
+
+        if (!priv->port_up)
+                return 0;
+
+        /* We assume a 1:1 mapping between CQEs and Rx descriptors, so Rx
+         * descriptor offset can be deduced from the CQE index instead of
+         * reading 'cqe->index' */
+        index = cq->mcq.cons_index & ring->size_mask;
+        cqe = &cq->buf[index];
+
+        /* Process all completed CQEs */
+        while (XNOR(cqe->owner_sr_opcode & MLX4_CQE_OWNER_MASK,
+                    cq->mcq.cons_index & cq->size)) {
+
+                skb_frags = ring->rx_info + (index << priv->log_rx_info);
+                rx_desc = ring->buf + (index << ring->log_stride);
+
+                /*
+                 * make sure we read the CQE after we read the ownership bit
+                 */
+                rmb();
+
+                /* Drop packet on bad receive or bad checksum */
+                if (unlikely((cqe->owner_sr_opcode & MLX4_CQE_OPCODE_MASK) ==
+                                                MLX4_CQE_OPCODE_ERROR)) {
+                        mlx4_err(mdev, "CQE completed in error - vendor "
+                                  "syndrom:%d syndrom:%d\n",
+                                  ((struct mlx4_err_cqe *) cqe)->vendor_err_syndrome,
+                                  ((struct mlx4_err_cqe *) cqe)->syndrome);
+                        goto next;
+                }
+                if (unlikely(cqe->badfcs_enc & MLX4_CQE_BAD_FCS)) {
+                        mlx4_dbg(RX_ERR, priv, "Accepted frame with bad FCS\n");
+                        goto next;
+                }
+
+                /*
+                 * Packet is OK - process it.
+                 */
+                length = be32_to_cpu(cqe->byte_cnt);
+                ring->bytes += length;
+                ring->packets++;
+
+                if (likely(priv->rx_csum)) {
+                        if ((cqe->status & cpu_to_be16(MLX4_CQE_STATUS_IPOK)) &&
+                            (cqe->checksum == cpu_to_be16(0xffff))) {
+                                priv->port_stats.rx_chksum_good++;
+                                /* This packet is eligible for LRO if it is:
+                                 * - DIX Ethernet (type interpretation)
+                                 * - TCP/IP (v4)
+                                 * - without IP options
+                                 * - not an IP fragment */
+                                if (mlx4_en_can_lro(cqe->status) &&
+                                    dev->features & NETIF_F_LRO) {
+
+                                        nr = mlx4_en_complete_rx_desc(
+                                                priv, rx_desc,
+                                                skb_frags, lro_frags,
+                                                ring->page_alloc, length);
+                                        if (!nr)
+                                                goto next;
+
+                                        if (priv->vlgrp && (cqe->vlan_my_qpn &
+                                                            cpu_to_be32(MLX4_CQE_VLAN_PRESENT_MASK))) {
+                                                lro_vlan_hwaccel_receive_frags(
+                                                       &ring->lro, lro_frags,
+                                                       length, length,
+                                                       priv->vlgrp,
+                                                       be16_to_cpu(cqe->sl_vid),
+                                                       NULL, 0);
+                                        } else
+                                                lro_receive_frags(&ring->lro,
+                                                                  lro_frags,
+                                                                  length,
+                                                                  length,
+                                                                  NULL, 0);
+
+                                        goto next;
+                                }
+
+                                /* LRO not possible, complete processing here */
+                                ip_summed = CHECKSUM_UNNECESSARY;
+                                INC_PERF_COUNTER(priv->pstats.lro_misses);
+                        } else {
+                                ip_summed = CHECKSUM_NONE;
+                                priv->port_stats.rx_chksum_none++;
+                        }
+                } else {
+                        ip_summed = CHECKSUM_NONE;
+                        priv->port_stats.rx_chksum_none++;
+                }
+
+                skb = mlx4_en_rx_skb(priv, rx_desc, skb_frags,
+                                     ring->page_alloc, length);
+                if (!skb) {
+                        priv->stats.rx_dropped++;
+                        goto next;
+                }
+
+                skb->ip_summed = ip_summed;
+                skb->protocol = eth_type_trans(skb, dev);
+
+                /* Push it up the stack */
+                if (priv->vlgrp && (be32_to_cpu(cqe->vlan_my_qpn) &
+                                    MLX4_CQE_VLAN_PRESENT_MASK)) {
+                        vlan_hwaccel_receive_skb(skb, priv->vlgrp,
+                                                be16_to_cpu(cqe->sl_vid));
+                } else
+                        netif_receive_skb(skb);
+
+                dev->last_rx = jiffies;
+
+next:
+                ++cq->mcq.cons_index;
+                index = (cq->mcq.cons_index) & ring->size_mask;
+                cqe = &cq->buf[index];
+                if (++polled == budget) {
+                        /* We are here because we reached the NAPI budget -
+                         * flush only pending LRO sessions */
+                        lro_flush_all(&ring->lro);
+                        goto out;
+                }
+        }
+
+        /* If CQ is empty flush all LRO sessions unconditionally */
+        lro_flush_all(&ring->lro);
+
+out:
+        AVG_PERF_COUNTER(priv->pstats.rx_coal_avg, polled);
+        mlx4_cq_set_ci(&cq->mcq);
+        wmb(); /* ensure HW sees CQ consumer before we post new buffers */
+        ring->cons = cq->mcq.cons_index;
+        ring->prod += polled; /* Polled descriptors were realocated in place */
+        if (unlikely(!ring->full)) {
+                mlx4_en_copy_desc(priv, ring, ring->cons - polled,
+                                  ring->prod - polled, polled);
+                mlx4_en_fill_rx_buf(dev, ring);
+        }
+        mlx4_en_update_rx_prod_db(ring);
+        return polled;
+}
+
+
+void mlx4_en_rx_irq(struct mlx4_cq *mcq)
+{
+        struct mlx4_en_cq *cq = container_of(mcq, struct mlx4_en_cq, mcq);
+        struct mlx4_en_priv *priv = netdev_priv(cq->dev);
+
+        if (priv->port_up)
+                netif_rx_schedule(cq->dev, &cq->napi);
+        else
+                mlx4_en_arm_cq(priv, cq);
+}
+
+/* Rx CQ polling - called by NAPI */
+int mlx4_en_poll_rx_cq(struct napi_struct *napi, int budget)
+{
+        struct mlx4_en_cq *cq = container_of(napi, struct mlx4_en_cq, napi);
+        struct net_device *dev = cq->dev;
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        int done;
+
+        done = mlx4_en_process_rx_cq(dev, cq, budget);
+
+        /* If we used up all the quota - we're probably not done yet... */
+        if (done == budget)
+                INC_PERF_COUNTER(priv->pstats.napi_quota);
+        else {
+                /* Done for now */
+                netif_rx_complete(dev, napi);
+                mlx4_en_arm_cq(priv, cq);
+        }
+        return done;
+}
+
+
+/* Calculate the last offset position that accomodates a full fragment
+ * (assuming fagment size = stride-align) */
+static int mlx4_en_last_alloc_offset(struct mlx4_en_priv *priv, u16 stride, u16 align)
+{
+        u16 res = MLX4_EN_ALLOC_SIZE % stride;
+        u16 offset = MLX4_EN_ALLOC_SIZE - stride - res + align;
+
+        mlx4_dbg(DRV, priv, "Calculated last offset for stride:%d align:%d "
+                            "res:%d offset:%d\n", stride, align, res, offset);
+        return offset;
+}
+
+
+static int frag_sizes[] = {
+        FRAG_SZ0,
+        FRAG_SZ1,
+        FRAG_SZ2,
+        FRAG_SZ3
+};
+
+void mlx4_en_calc_rx_buf(struct net_device *dev)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        int eff_mtu = dev->mtu + ETH_HLEN + VLAN_HLEN + ETH_LLC_SNAP_SIZE;
+        int buf_size = 0;
+        int i = 0;
+
+        while (buf_size < eff_mtu) {
+                priv->frag_info[i].frag_size =
+                        (eff_mtu > buf_size + frag_sizes[i]) ?
+                                frag_sizes[i] : eff_mtu - buf_size;
+                priv->frag_info[i].frag_prefix_size = buf_size;
+                if (!i) {
+                        priv->frag_info[i].frag_align = NET_IP_ALIGN;
+                        priv->frag_info[i].frag_stride =
+                                ALIGN(frag_sizes[i] + NET_IP_ALIGN, SMP_CACHE_BYTES);
+                } else {
+                        priv->frag_info[i].frag_align = 0;
+                        priv->frag_info[i].frag_stride =
+                                ALIGN(frag_sizes[i], SMP_CACHE_BYTES);
+                }
+                priv->frag_info[i].last_offset = mlx4_en_last_alloc_offset(
+                                                priv, priv->frag_info[i].frag_stride,
+                                                priv->frag_info[i].frag_align);
+                buf_size += priv->frag_info[i].frag_size;
+                i++;
+        }
+
+        priv->num_frags = i;
+        priv->rx_skb_size = eff_mtu;
+        priv->log_rx_info = ROUNDUP_LOG2(i * sizeof(struct skb_frag_struct));
+
+        mlx4_dbg(DRV, priv, "Rx buffer scatter-list (effective-mtu:%d "
+                  "num_frags:%d):\n", eff_mtu, priv->num_frags);
+        for (i = 0; i < priv->num_frags; i++) {
+                mlx4_dbg(DRV, priv, "  frag:%d - size:%d prefix:%d align:%d "
+                                "stride:%d last_offset:%d\n", i,
+                                priv->frag_info[i].frag_size,
+                                priv->frag_info[i].frag_prefix_size,
+                                priv->frag_info[i].frag_align,
+                                priv->frag_info[i].frag_stride,
+                                priv->frag_info[i].last_offset);
+        }
+}
+
+/* RSS related functions */
+
+/* Calculate rss size and map each entry in rss table to rx ring */
+void mlx4_en_set_default_rss_map(struct mlx4_en_priv *priv,
+                                 struct mlx4_en_rss_map *rss_map,
+                                 int num_entries, int num_rings)
+{
+        int i;
+
+        rss_map->size = roundup_pow_of_two(num_entries);
+        mlx4_dbg(DRV, priv, "Setting default RSS map of %d entires\n",
+                 rss_map->size);
+
+        for (i = 0; i < rss_map->size; i++) {
+                rss_map->map[i] = i % num_rings;
+                mlx4_dbg(DRV, priv, "Entry %d ---> ring %d\n", i, rss_map->map[i]);
+        }
+}
+
+static void mlx4_en_sqp_event(struct mlx4_qp *qp, enum mlx4_event event)
+{
+    return;
+}
+
+
+static int mlx4_en_config_rss_qp(struct mlx4_en_priv *priv,
+                                 int qpn, int srqn, int cqn,
+                                 enum mlx4_qp_state *state,
+                                 struct mlx4_qp *qp)
+{
+        struct mlx4_en_dev *mdev = priv->mdev;
+        struct mlx4_qp_context *context;
+        int err = 0;
+
+        context = kmalloc(sizeof *context , GFP_KERNEL);
+        if (!context) {
+                mlx4_err(mdev, "Failed to allocate qp context\n");
+                return -ENOMEM;
+        }
+
+        err = mlx4_qp_alloc(mdev->dev, qpn, qp);
+        if (err) {
+                mlx4_err(mdev, "Failed to allocate qp #%d\n", qpn);
+                goto out;
+                return err;
+        }
+        qp->event = mlx4_en_sqp_event;
+
+        memset(context, 0, sizeof *context);
+        mlx4_en_fill_qp_context(priv, 0, 0, 0, 0, qpn, cqn, srqn, context);
+
+        err = mlx4_qp_to_ready(mdev->dev, &priv->res.mtt, context, qp, state);
+        if (err) {
+                mlx4_qp_remove(mdev->dev, qp);
+                mlx4_qp_free(mdev->dev, qp);
+        }
+out:
+        kfree(context);
+        return err;
+}
+
+/* Allocate rx qp's and configure them according to rss map */
+int mlx4_en_config_rss_steer(struct mlx4_en_priv *priv)
+{
+        struct mlx4_en_dev *mdev = priv->mdev;
+        struct mlx4_en_rss_map *rss_map = &priv->rss_map;
+        struct mlx4_qp_context context;
+        struct mlx4_en_rss_context *rss_context;
+        void *ptr;
+        int rss_xor = mdev->profile.rss_xor;
+        u8 rss_mask = mdev->profile.rss_mask;
+        int i, srqn, qpn, cqn;
+        int err = 0;
+        int good_qps = 0;
+
+        mlx4_dbg(DRV, priv, "Configuring rss steering for port %u\n", priv->port);
+        err = mlx4_qp_reserve_range(mdev->dev, rss_map->size,
+                                    rss_map->size, &rss_map->base_qpn);
+        if (err) {
+                mlx4_err(mdev, "Failed reserving %d qps for port %u\n",
+                         rss_map->size, priv->port);
+                return err;
+        }
+
+        for (i = 0; i < rss_map->size; i++) {
+                cqn = priv->rx_ring[rss_map->map[i]].cqn;
+                srqn = priv->rx_ring[rss_map->map[i]].srq.srqn;
+                qpn = rss_map->base_qpn + i;
+                err = mlx4_en_config_rss_qp(priv, qpn, srqn, cqn,
+                                            &rss_map->state[i],
+                                            &rss_map->qps[i]);
+                if (err)
+                        goto rss_err;
+
+                ++good_qps;
+        }
+
+        /* Configure RSS indirection qp */
+        err = mlx4_qp_reserve_range(mdev->dev, 1, 1, &priv->base_qpn);
+        if (err) {
+                mlx4_err(mdev, "Failed to reserve range for RSS "
+                               "indirection qp\n");
+                goto rss_err;
+        }
+        err = mlx4_qp_alloc(mdev->dev, priv->base_qpn, &rss_map->indir_qp);
+        if (err) {
+                mlx4_err(mdev, "Failed to allocate RSS indirection QP\n");
+                goto reserve_err;
+        }
+        rss_map->indir_qp.event = mlx4_en_sqp_event;
+        mlx4_en_fill_qp_context(priv, 0, 0, 0, 1, priv->base_qpn,
+                                priv->rx_ring[0].cqn, 0, &context);
+
+        ptr = ((void *) &context) + 0x3c;
+        rss_context = (struct mlx4_en_rss_context *) ptr;
+        rss_context->base_qpn = cpu_to_be32(ilog2(rss_map->size) << 24 |
+                                            (rss_map->base_qpn));
+        rss_context->default_qpn = cpu_to_be32(rss_map->base_qpn);
+        rss_context->hash_fn = rss_xor & 0x3;
+        rss_context->flags = rss_mask << 2;
+
+        err = mlx4_qp_to_ready(mdev->dev, &priv->res.mtt, &context,
+                               &rss_map->indir_qp, &rss_map->indir_state);
+        if (err)
+                goto indir_err;
+
+        return 0;
+
+indir_err:
+        mlx4_qp_modify(mdev->dev, NULL, rss_map->indir_state,
+                       MLX4_QP_STATE_RST, NULL, 0, 0, &rss_map->indir_qp);
+        mlx4_qp_remove(mdev->dev, &rss_map->indir_qp);
+        mlx4_qp_free(mdev->dev, &rss_map->indir_qp);
+reserve_err:
+        mlx4_qp_release_range(mdev->dev, priv->base_qpn, 1);
+rss_err:
+        for (i = 0; i < good_qps; i++) {
+                mlx4_qp_modify(mdev->dev, NULL, rss_map->state[i],
+                               MLX4_QP_STATE_RST, NULL, 0, 0, &rss_map->qps[i]);
+                mlx4_qp_remove(mdev->dev, &rss_map->qps[i]);
+                mlx4_qp_free(mdev->dev, &rss_map->qps[i]);
+        }
+        mlx4_qp_release_range(mdev->dev, rss_map->base_qpn, rss_map->size);
+        return err;
+}
+
+void mlx4_en_release_rss_steer(struct mlx4_en_priv *priv)
+{
+        struct mlx4_en_dev *mdev = priv->mdev;
+        struct mlx4_en_rss_map *rss_map = &priv->rss_map;
+        int i;
+
+        mlx4_qp_modify(mdev->dev, NULL, rss_map->indir_state,
+                       MLX4_QP_STATE_RST, NULL, 0, 0, &rss_map->indir_qp);
+        mlx4_qp_remove(mdev->dev, &rss_map->indir_qp);
+        mlx4_qp_free(mdev->dev, &rss_map->indir_qp);
+        mlx4_qp_release_range(mdev->dev, priv->base_qpn, 1);
+
+        for (i = 0; i < rss_map->size; i++) {
+                mlx4_qp_modify(mdev->dev, NULL, rss_map->state[i],
+                               MLX4_QP_STATE_RST, NULL, 0, 0, &rss_map->qps[i]);
+                mlx4_qp_remove(mdev->dev, &rss_map->qps[i]);
+                mlx4_qp_free(mdev->dev, &rss_map->qps[i]);
+        }
+        mlx4_qp_release_range(mdev->dev, rss_map->base_qpn, rss_map->size);
+}
+
+
+
+
+
diff --git a/drivers/net/mlx4/en_tx.c b/drivers/net/mlx4/en_tx.c
new file mode 100644
index 000000000000..8592f8fb8475
--- /dev/null
+++ b/drivers/net/mlx4/en_tx.c
@@ -0,0 +1,820 @@
+/*
+ * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#include <asm/page.h>
+#include <linux/mlx4/cq.h>
+#include <linux/mlx4/qp.h>
+#include <linux/skbuff.h>
+#include <linux/if_vlan.h>
+#include <linux/vmalloc.h>
+
+#include "mlx4_en.h"
+
+enum {
+        MAX_INLINE = 104, /* 128 - 16 - 4 - 4 */
+};
+
+static int inline_thold __read_mostly = MAX_INLINE;
+
+module_param_named(inline_thold, inline_thold, int, 0444);
+MODULE_PARM_DESC(inline_thold, "treshold for using inline data");
+
+int mlx4_en_create_tx_ring(struct mlx4_en_priv *priv,
+                           struct mlx4_en_tx_ring *ring, u32 size,
+                           u16 stride)
+{
+        struct mlx4_en_dev *mdev = priv->mdev;
+        int tmp;
+        int err;
+
+        ring->size = size;
+        ring->size_mask = size - 1;
+        ring->stride = stride;
+
+        inline_thold = min(inline_thold, MAX_INLINE);
+
+        spin_lock_init(&ring->comp_lock);
+
+        tmp = size * sizeof(struct mlx4_en_tx_info);
+        ring->tx_info = vmalloc(tmp);
+        if (!ring->tx_info) {
+                mlx4_err(mdev, "Failed allocating tx_info ring\n");
+                return -ENOMEM;
+        }
+        mlx4_dbg(DRV, priv, "Allocated tx_info ring at addr:%p size:%d\n",
+                 ring->tx_info, tmp);
+
+        ring->bounce_buf = kmalloc(MAX_DESC_SIZE, GFP_KERNEL);
+        if (!ring->bounce_buf) {
+                mlx4_err(mdev, "Failed allocating bounce buffer\n");
+                err = -ENOMEM;
+                goto err_tx;
+        }
+        ring->buf_size = ALIGN(size * ring->stride, MLX4_EN_PAGE_SIZE);
+
+        err = mlx4_alloc_hwq_res(mdev->dev, &ring->wqres, ring->buf_size,
+                                 2 * PAGE_SIZE);
+        if (err) {
+                mlx4_err(mdev, "Failed allocating hwq resources\n");
+                goto err_bounce;
+        }
+
+        err = mlx4_en_map_buffer(&ring->wqres.buf);
+        if (err) {
+                mlx4_err(mdev, "Failed to map TX buffer\n");
+                goto err_hwq_res;
+        }
+
+        ring->buf = ring->wqres.buf.direct.buf;
+
+        mlx4_dbg(DRV, priv, "Allocated TX ring (addr:%p) - buf:%p size:%d "
+                 "buf_size:%d dma:%llx\n", ring, ring->buf, ring->size,
+                 ring->buf_size, (unsigned long long) ring->wqres.buf.direct.map);
+
+        err = mlx4_qp_reserve_range(mdev->dev, 1, 1, &ring->qpn);
+        if (err) {
+                mlx4_err(mdev, "Failed reserving qp for tx ring.\n");
+                goto err_map;
+        }
+
+        err = mlx4_qp_alloc(mdev->dev, ring->qpn, &ring->qp);
+        if (err) {
+                mlx4_err(mdev, "Failed allocating qp %d\n", ring->qpn);
+                goto err_reserve;
+        }
+
+        return 0;
+
+err_reserve:
+        mlx4_qp_release_range(mdev->dev, ring->qpn, 1);
+err_map:
+        mlx4_en_unmap_buffer(&ring->wqres.buf);
+err_hwq_res:
+        mlx4_free_hwq_res(mdev->dev, &ring->wqres, ring->buf_size);
+err_bounce:
+        kfree(ring->bounce_buf);
+        ring->bounce_buf = NULL;
+err_tx:
+        vfree(ring->tx_info);
+        ring->tx_info = NULL;
+        return err;
+}
+
+void mlx4_en_destroy_tx_ring(struct mlx4_en_priv *priv,
+                             struct mlx4_en_tx_ring *ring)
+{
+        struct mlx4_en_dev *mdev = priv->mdev;
+        mlx4_dbg(DRV, priv, "Destroying tx ring, qpn: %d\n", ring->qpn);
+
+        mlx4_qp_remove(mdev->dev, &ring->qp);
+        mlx4_qp_free(mdev->dev, &ring->qp);
+        mlx4_qp_release_range(mdev->dev, ring->qpn, 1);
+        mlx4_en_unmap_buffer(&ring->wqres.buf);
+        mlx4_free_hwq_res(mdev->dev, &ring->wqres, ring->buf_size);
+        kfree(ring->bounce_buf);
+        ring->bounce_buf = NULL;
+        vfree(ring->tx_info);
+        ring->tx_info = NULL;
+}
+
+int mlx4_en_activate_tx_ring(struct mlx4_en_priv *priv,
+                             struct mlx4_en_tx_ring *ring,
+                             int cq, int srqn)
+{
+        struct mlx4_en_dev *mdev = priv->mdev;
+        int err;
+
+        ring->cqn = cq;
+        ring->prod = 0;
+        ring->cons = 0xffffffff;
+        ring->last_nr_txbb = 1;
+        ring->poll_cnt = 0;
+        ring->blocked = 0;
+        memset(ring->tx_info, 0, ring->size * sizeof(struct mlx4_en_tx_info));
+        memset(ring->buf, 0, ring->buf_size);
+
+        ring->qp_state = MLX4_QP_STATE_RST;
+        ring->doorbell_qpn = swab32(ring->qp.qpn << 8);
+
+        mlx4_en_fill_qp_context(priv, ring->size, ring->stride, 1, 0, ring->qpn,
+                                ring->cqn, srqn, &ring->context);
+
+        err = mlx4_qp_to_ready(mdev->dev, &ring->wqres.mtt, &ring->context,
+                               &ring->qp, &ring->qp_state);
+
+        return err;
+}
+
+void mlx4_en_deactivate_tx_ring(struct mlx4_en_priv *priv,
+                                struct mlx4_en_tx_ring *ring)
+{
+        struct mlx4_en_dev *mdev = priv->mdev;
+
+        mlx4_qp_modify(mdev->dev, NULL, ring->qp_state,
+                       MLX4_QP_STATE_RST, NULL, 0, 0, &ring->qp);
+}
+
+
+static u32 mlx4_en_free_tx_desc(struct mlx4_en_priv *priv,
+                                struct mlx4_en_tx_ring *ring,
+                                int index, u8 owner)
+{
+        struct mlx4_en_dev *mdev = priv->mdev;
+        struct mlx4_en_tx_info *tx_info = &ring->tx_info[index];
+        struct mlx4_en_tx_desc *tx_desc = ring->buf + index * TXBB_SIZE;
+        struct mlx4_wqe_data_seg *data = (void *) tx_desc + tx_info->data_offset;
+        struct sk_buff *skb = tx_info->skb;
+        struct skb_frag_struct *frag;
+        void *end = ring->buf + ring->buf_size;
+        int frags = skb_shinfo(skb)->nr_frags;
+        int i;
+        __be32 *ptr = (__be32 *)tx_desc;
+        __be32 stamp = cpu_to_be32(STAMP_VAL | (!!owner << STAMP_SHIFT));
+
+        /* Optimize the common case when there are no wraparounds */
+        if (likely((void *) tx_desc + tx_info->nr_txbb * TXBB_SIZE <= end)) {
+                if (tx_info->linear) {
+                        pci_unmap_single(mdev->pdev,
+                                         (dma_addr_t) be64_to_cpu(data->addr),
+                                         be32_to_cpu(data->byte_count),
+                                         PCI_DMA_TODEVICE);
+                        ++data;
+                }
+
+                for (i = 0; i < frags; i++) {
+                        frag = &skb_shinfo(skb)->frags[i];
+                        pci_unmap_page(mdev->pdev,
+                                       (dma_addr_t) be64_to_cpu(data[i].addr),
+                                       frag->size, PCI_DMA_TODEVICE);
+                }
+                /* Stamp the freed descriptor */
+                for (i = 0; i < tx_info->nr_txbb * TXBB_SIZE; i += STAMP_STRIDE) {
+                        *ptr = stamp;
+                        ptr += STAMP_DWORDS;
+                }
+
+        } else {
+                if ((void *) data >= end) {
+                        data = (struct mlx4_wqe_data_seg *)
+                                        (ring->buf + ((void *) data - end));
+                }
+
+                if (tx_info->linear) {
+                        pci_unmap_single(mdev->pdev,
+                                         (dma_addr_t) be64_to_cpu(data->addr),
+                                         be32_to_cpu(data->byte_count),
+                                         PCI_DMA_TODEVICE);
+                        ++data;
+                }
+
+                for (i = 0; i < frags; i++) {
+                        /* Check for wraparound before unmapping */
+                        if ((void *) data >= end)
+                                data = (struct mlx4_wqe_data_seg *) ring->buf;
+                        frag = &skb_shinfo(skb)->frags[i];
+                        pci_unmap_page(mdev->pdev,
+                                        (dma_addr_t) be64_to_cpu(data->addr),
+                                         frag->size, PCI_DMA_TODEVICE);
+                }
+                /* Stamp the freed descriptor */
+                for (i = 0; i < tx_info->nr_txbb * TXBB_SIZE; i += STAMP_STRIDE) {
+                        *ptr = stamp;
+                        ptr += STAMP_DWORDS;
+                        if ((void *) ptr >= end) {
+                                ptr = ring->buf;
+                                stamp ^= cpu_to_be32(0x80000000);
+                        }
+                }
+
+        }
+        dev_kfree_skb_any(skb);
+        return tx_info->nr_txbb;
+}
+
+
+int mlx4_en_free_tx_buf(struct net_device *dev, struct mlx4_en_tx_ring *ring)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        int cnt = 0;
+
+        /* Skip last polled descriptor */
+        ring->cons += ring->last_nr_txbb;
+        mlx4_dbg(DRV, priv, "Freeing Tx buf - cons:0x%x prod:0x%x\n",
+                 ring->cons, ring->prod);
+
+        if ((u32) (ring->prod - ring->cons) > ring->size) {
+                if (netif_msg_tx_err(priv))
+                        mlx4_warn(priv->mdev, "Tx consumer passed producer!\n");
+                return 0;
+        }
+
+        while (ring->cons != ring->prod) {
+                ring->last_nr_txbb = mlx4_en_free_tx_desc(priv, ring,
+                                                ring->cons & ring->size_mask,
+                                                !!(ring->cons & ring->size));
+                ring->cons += ring->last_nr_txbb;
+                cnt++;
+        }
+
+        if (cnt)
+                mlx4_dbg(DRV, priv, "Freed %d uncompleted tx descriptors\n", cnt);
+
+        return cnt;
+}
+
+void mlx4_en_set_prio_map(struct mlx4_en_priv *priv, u16 *prio_map, u32 ring_num)
+{
+        int block = 8 / ring_num;
+        int extra = 8 - (block * ring_num);
+        int num = 0;
+        u16 ring = 1;
+        int prio;
+
+        if (ring_num == 1) {
+                for (prio = 0; prio < 8; prio++)
+                        prio_map[prio] = 0;
+                return;
+        }
+
+        for (prio = 0; prio < 8; prio++) {
+                if (extra && (num == block + 1)) {
+                        ring++;
+                        num = 0;
+                        extra--;
+                } else if (!extra && (num == block)) {
+                        ring++;
+                        num = 0;
+                }
+                prio_map[prio] = ring;
+                mlx4_dbg(DRV, priv, " prio:%d --> ring:%d\n", prio, ring);
+                num++;
+        }
+}
+
+static void mlx4_en_process_tx_cq(struct net_device *dev, struct mlx4_en_cq *cq)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        struct mlx4_cq *mcq = &cq->mcq;
+        struct mlx4_en_tx_ring *ring = &priv->tx_ring[cq->ring];
+        struct mlx4_cqe *cqe = cq->buf;
+        u16 index;
+        u16 new_index;
+        u32 txbbs_skipped = 0;
+        u32 cq_last_sav;
+
+        /* index always points to the first TXBB of the last polled descriptor */
+        index = ring->cons & ring->size_mask;
+        new_index = be16_to_cpu(cqe->wqe_index) & ring->size_mask;
+        if (index == new_index)
+                return;
+
+        if (!priv->port_up)
+                return;
+
+        /*
+         * We use a two-stage loop:
+         * - the first samples the HW-updated CQE
+         * - the second frees TXBBs until the last sample
+         * This lets us amortize CQE cache misses, while still polling the CQ
+         * until is quiescent.
+         */
+        cq_last_sav = mcq->cons_index;
+        do {
+                do {
+                        /* Skip over last polled CQE */
+                        index = (index + ring->last_nr_txbb) & ring->size_mask;
+                        txbbs_skipped += ring->last_nr_txbb;
+
+                        /* Poll next CQE */
+                        ring->last_nr_txbb = mlx4_en_free_tx_desc(
+                                                priv, ring, index,
+                                                !!((ring->cons + txbbs_skipped) &
+                                                   ring->size));
+                        ++mcq->cons_index;
+
+                } while (index != new_index);
+
+                new_index = be16_to_cpu(cqe->wqe_index) & ring->size_mask;
+        } while (index != new_index);
+        AVG_PERF_COUNTER(priv->pstats.tx_coal_avg,
+                         (u32) (mcq->cons_index - cq_last_sav));
+
+        /*
+         * To prevent CQ overflow we first update CQ consumer and only then
+         * the ring consumer.
+         */
+        mlx4_cq_set_ci(mcq);
+        wmb();
+        ring->cons += txbbs_skipped;
+
+        /* Wakeup Tx queue if this ring stopped it */
+        if (unlikely(ring->blocked)) {
+                if (((u32) (ring->prod - ring->cons) <=
+                     ring->size - HEADROOM - MAX_DESC_TXBBS) && !cq->armed) {
+
+                        /* TODO: support multiqueue netdevs. Currently, we block
+                         * when *any* ring is full. Note that:
+                         * - 2 Tx rings can unblock at the same time and call
+                         *   netif_wake_queue(), which is OK since this
+                         *   operation is idempotent.
+                         * - We might wake the queue just after another ring
+                         *   stopped it. This is no big deal because the next
+                         *   transmission on that ring would stop the queue.
+                         */
+                        ring->blocked = 0;
+                        netif_wake_queue(dev);
+                        priv->port_stats.wake_queue++;
+                }
+        }
+}
+
+void mlx4_en_tx_irq(struct mlx4_cq *mcq)
+{
+        struct mlx4_en_cq *cq = container_of(mcq, struct mlx4_en_cq, mcq);
+        struct mlx4_en_priv *priv = netdev_priv(cq->dev);
+        struct mlx4_en_tx_ring *ring = &priv->tx_ring[cq->ring];
+
+        spin_lock_irq(&ring->comp_lock);
+        cq->armed = 0;
+        mlx4_en_process_tx_cq(cq->dev, cq);
+        if (ring->blocked)
+                mlx4_en_arm_cq(priv, cq);
+        else
+                mod_timer(&cq->timer, jiffies + 1);
+        spin_unlock_irq(&ring->comp_lock);
+}
+
+
+void mlx4_en_poll_tx_cq(unsigned long data)
+{
+        struct mlx4_en_cq *cq = (struct mlx4_en_cq *) data;
+        struct mlx4_en_priv *priv = netdev_priv(cq->dev);
+        struct mlx4_en_tx_ring *ring = &priv->tx_ring[cq->ring];
+        u32 inflight;
+
+        INC_PERF_COUNTER(priv->pstats.tx_poll);
+
+        netif_tx_lock(priv->dev);
+        spin_lock_irq(&ring->comp_lock);
+        mlx4_en_process_tx_cq(cq->dev, cq);
+        inflight = (u32) (ring->prod - ring->cons - ring->last_nr_txbb);
+
+        /* If there are still packets in flight and the timer has not already
+         * been scheduled by the Tx routine then schedule it here to guarantee
+         * completion processing of these packets */
+        if (inflight && priv->port_up)
+                mod_timer(&cq->timer, jiffies + MLX4_EN_TX_POLL_TIMEOUT);
+
+        spin_unlock_irq(&ring->comp_lock);
+        netif_tx_unlock(priv->dev);
+}
+
+static struct mlx4_en_tx_desc *mlx4_en_bounce_to_desc(struct mlx4_en_priv *priv,
+                                                      struct mlx4_en_tx_ring *ring,
+                                                      u32 index,
+                                                      unsigned int desc_size)
+{
+        u32 copy = (ring->size - index) * TXBB_SIZE;
+        int i;
+
+        for (i = desc_size - copy - 4; i >= 0; i -= 4) {
+                if ((i & (TXBB_SIZE - 1)) == 0)
+                        wmb();
+
+                *((u32 *) (ring->buf + i)) =
+                        *((u32 *) (ring->bounce_buf + copy + i));
+        }
+
+        for (i = copy - 4; i >= 4 ; i -= 4) {
+                if ((i & (TXBB_SIZE - 1)) == 0)
+                        wmb();
+
+                *((u32 *) (ring->buf + index * TXBB_SIZE + i)) =
+                        *((u32 *) (ring->bounce_buf + i));
+        }
+
+        /* Return real descriptor location */
+        return ring->buf + index * TXBB_SIZE;
+}
+
+static inline void mlx4_en_xmit_poll(struct mlx4_en_priv *priv, int tx_ind)
+{
+        struct mlx4_en_cq *cq = &priv->tx_cq[tx_ind];
+        struct mlx4_en_tx_ring *ring = &priv->tx_ring[tx_ind];
+
+        /* If we don't have a pending timer, set one up to catch our recent
+           post in case the interface becomes idle */
+        if (!timer_pending(&cq->timer))
+                mod_timer(&cq->timer, jiffies + MLX4_EN_TX_POLL_TIMEOUT);
+
+        /* Poll the CQ every mlx4_en_TX_MODER_POLL packets */
+        if ((++ring->poll_cnt & (MLX4_EN_TX_POLL_MODER - 1)) == 0)
+                mlx4_en_process_tx_cq(priv->dev, cq);
+}
+
+static void *get_frag_ptr(struct sk_buff *skb)
+{
+        struct skb_frag_struct *frag =  &skb_shinfo(skb)->frags[0];
+        struct page *page = frag->page;
+        void *ptr;
+
+        ptr = page_address(page);
+        if (unlikely(!ptr))
+                return NULL;
+
+        return ptr + frag->page_offset;
+}
+
+static int is_inline(struct sk_buff *skb, void **pfrag)
+{
+        void *ptr;
+
+        if (inline_thold && !skb_is_gso(skb) && skb->len <= inline_thold) {
+                if (skb_shinfo(skb)->nr_frags == 1) {
+                        ptr = get_frag_ptr(skb);
+                        if (unlikely(!ptr))
+                                return 0;
+
+                        if (pfrag)
+                                *pfrag = ptr;
+
+                        return 1;
+                } else if (unlikely(skb_shinfo(skb)->nr_frags))
+                        return 0;
+                else
+                        return 1;
+        }
+
+        return 0;
+}
+
+static int inline_size(struct sk_buff *skb)
+{
+        if (skb->len + CTRL_SIZE + sizeof(struct mlx4_wqe_inline_seg)
+            <= MLX4_INLINE_ALIGN)
+                return ALIGN(skb->len + CTRL_SIZE +
+                             sizeof(struct mlx4_wqe_inline_seg), 16);
+        else
+                return ALIGN(skb->len + CTRL_SIZE + 2 *
+                             sizeof(struct mlx4_wqe_inline_seg), 16);
+}
+
+static int get_real_size(struct sk_buff *skb, struct net_device *dev,
+                         int *lso_header_size)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        struct mlx4_en_dev *mdev = priv->mdev;
+        int real_size;
+
+        if (skb_is_gso(skb)) {
+                *lso_header_size = skb_transport_offset(skb) + tcp_hdrlen(skb);
+                real_size = CTRL_SIZE + skb_shinfo(skb)->nr_frags * DS_SIZE +
+                        ALIGN(*lso_header_size + 4, DS_SIZE);
+                if (unlikely(*lso_header_size != skb_headlen(skb))) {
+                        /* We add a segment for the skb linear buffer only if
+                         * it contains data */
+                        if (*lso_header_size < skb_headlen(skb))
+                                real_size += DS_SIZE;
+                        else {
+                                if (netif_msg_tx_err(priv))
+                                        mlx4_warn(mdev, "Non-linear headers\n");
+                                dev_kfree_skb_any(skb);
+                                return 0;
+                        }
+                }
+                if (unlikely(*lso_header_size > MAX_LSO_HDR_SIZE)) {
+                        if (netif_msg_tx_err(priv))
+                                mlx4_warn(mdev, "LSO header size too big\n");
+                        dev_kfree_skb_any(skb);
+                        return 0;
+                }
+        } else {
+                *lso_header_size = 0;
+                if (!is_inline(skb, NULL))
+                        real_size = CTRL_SIZE + (skb_shinfo(skb)->nr_frags + 1) * DS_SIZE;
+                else
+                        real_size = inline_size(skb);
+        }
+
+        return real_size;
+}
+
+static void build_inline_wqe(struct mlx4_en_tx_desc *tx_desc, struct sk_buff *skb,
+                             int real_size, u16 *vlan_tag, int tx_ind, void *fragptr)
+{
+        struct mlx4_wqe_inline_seg *inl = &tx_desc->inl;
+        int spc = MLX4_INLINE_ALIGN - CTRL_SIZE - sizeof *inl;
+
+        if (skb->len <= spc) {
+                inl->byte_count = cpu_to_be32(1 << 31 | skb->len);
+                skb_copy_from_linear_data(skb, inl + 1, skb_headlen(skb));
+                if (skb_shinfo(skb)->nr_frags)
+                        memcpy(((void *)(inl + 1)) + skb_headlen(skb), fragptr,
+                               skb_shinfo(skb)->frags[0].size);
+
+        } else {
+                inl->byte_count = cpu_to_be32(1 << 31 | spc);
+                if (skb_headlen(skb) <= spc) {
+                        skb_copy_from_linear_data(skb, inl + 1, skb_headlen(skb));
+                        if (skb_headlen(skb) < spc) {
+                                memcpy(((void *)(inl + 1)) + skb_headlen(skb),
+                                        fragptr, spc - skb_headlen(skb));
+                                fragptr +=  spc - skb_headlen(skb);
+                        }
+                        inl = (void *) (inl + 1) + spc;
+                        memcpy(((void *)(inl + 1)), fragptr, skb->len - spc);
+                } else {
+                        skb_copy_from_linear_data(skb, inl + 1, spc);
+                        inl = (void *) (inl + 1) + spc;
+                        skb_copy_from_linear_data_offset(skb, spc, inl + 1,
+                                        skb_headlen(skb) - spc);
+                        if (skb_shinfo(skb)->nr_frags)
+                                memcpy(((void *)(inl + 1)) + skb_headlen(skb) - spc,
+                                        fragptr, skb_shinfo(skb)->frags[0].size);
+                }
+
+                wmb();
+                inl->byte_count = cpu_to_be32(1 << 31 | (skb->len - spc));
+        }
+        tx_desc->ctrl.vlan_tag = cpu_to_be16(*vlan_tag);
+        tx_desc->ctrl.ins_vlan = MLX4_WQE_CTRL_INS_VLAN * !!(*vlan_tag);
+        tx_desc->ctrl.fence_size = (real_size / 16) & 0x3f;
+}
+
+static int get_vlan_info(struct mlx4_en_priv *priv, struct sk_buff *skb,
+                         u16 *vlan_tag)
+{
+        int tx_ind;
+
+        /* Obtain VLAN information if present */
+        if (priv->vlgrp && vlan_tx_tag_present(skb)) {
+                *vlan_tag = vlan_tx_tag_get(skb);
+                /* Set the Tx ring to use according to vlan priority */
+                tx_ind = priv->tx_prio_map[*vlan_tag >> 13];
+        } else {
+                *vlan_tag = 0;
+                tx_ind = 0;
+        }
+        return tx_ind;
+}
+
+int mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+        struct mlx4_en_priv *priv = netdev_priv(dev);
+        struct mlx4_en_dev *mdev = priv->mdev;
+        struct mlx4_en_tx_ring *ring;
+        struct mlx4_en_cq *cq;
+        struct mlx4_en_tx_desc *tx_desc;
+        struct mlx4_wqe_data_seg *data;
+        struct skb_frag_struct *frag;
+        struct mlx4_en_tx_info *tx_info;
+        int tx_ind = 0;
+        int nr_txbb;
+        int desc_size;
+        int real_size;
+        dma_addr_t dma;
+        u32 index;
+        __be32 op_own;
+        u16 vlan_tag;
+        int i;
+        int lso_header_size;
+        void *fragptr;
+
+        if (unlikely(!skb->len)) {
+                dev_kfree_skb_any(skb);
+                return NETDEV_TX_OK;
+        }
+        real_size = get_real_size(skb, dev, &lso_header_size);
+        if (unlikely(!real_size))
+                return NETDEV_TX_OK;
+
+        /* Allign descriptor to TXBB size */
+        desc_size = ALIGN(real_size, TXBB_SIZE);
+        nr_txbb = desc_size / TXBB_SIZE;
+        if (unlikely(nr_txbb > MAX_DESC_TXBBS)) {
+                if (netif_msg_tx_err(priv))
+                        mlx4_warn(mdev, "Oversized header or SG list\n");
+                dev_kfree_skb_any(skb);
+                return NETDEV_TX_OK;
+        }
+
+        tx_ind = get_vlan_info(priv, skb, &vlan_tag);
+        ring = &priv->tx_ring[tx_ind];
+
+        /* Check available TXBBs And 2K spare for prefetch */
+        if (unlikely(((int)(ring->prod - ring->cons)) >
+                     ring->size - HEADROOM - MAX_DESC_TXBBS)) {
+                /* every full Tx ring stops queue.
+                 * TODO: implement multi-queue support (per-queue stop) */
+                netif_stop_queue(dev);
+                ring->blocked = 1;
+                priv->port_stats.queue_stopped++;
+
+                /* Use interrupts to find out when queue opened */
+                cq = &priv->tx_cq[tx_ind];
+                mlx4_en_arm_cq(priv, cq);
+                return NETDEV_TX_BUSY;
+        }
+
+        /* Now that we know what Tx ring to use */
+        if (unlikely(!priv->port_up)) {
+                if (netif_msg_tx_err(priv))
+                        mlx4_warn(mdev, "xmit: port down!\n");
+                dev_kfree_skb_any(skb);
+                return NETDEV_TX_OK;
+        }
+
+        /* Track current inflight packets for performance analysis */
+        AVG_PERF_COUNTER(priv->pstats.inflight_avg,
+                         (u32) (ring->prod - ring->cons - 1));
+
+        /* Packet is good - grab an index and transmit it */
+        index = ring->prod & ring->size_mask;
+
+        /* See if we have enough space for whole descriptor TXBB for setting
+         * SW ownership on next descriptor; if not, use a bounce buffer. */
+        if (likely(index + nr_txbb <= ring->size))
+                tx_desc = ring->buf + index * TXBB_SIZE;
+        else
+                tx_desc = (struct mlx4_en_tx_desc *) ring->bounce_buf;
+
+        /* Save skb in tx_info ring */
+        tx_info = &ring->tx_info[index];
+        tx_info->skb = skb;
+        tx_info->nr_txbb = nr_txbb;
+
+        /* Prepare ctrl segement apart opcode+ownership, which depends on
+         * whether LSO is used */
+        tx_desc->ctrl.vlan_tag = cpu_to_be16(vlan_tag);
+        tx_desc->ctrl.ins_vlan = MLX4_WQE_CTRL_INS_VLAN * !!vlan_tag;
+        tx_desc->ctrl.fence_size = (real_size / 16) & 0x3f;
+        tx_desc->ctrl.srcrb_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
+                                                MLX4_WQE_CTRL_SOLICITED);
+        if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
+                tx_desc->ctrl.srcrb_flags |= cpu_to_be32(MLX4_WQE_CTRL_IP_CSUM |
+                                                         MLX4_WQE_CTRL_TCP_UDP_CSUM);
+                priv->port_stats.tx_chksum_offload++;
+        }
+
+        /* Handle LSO (TSO) packets */
+        if (lso_header_size) {
+                /* Mark opcode as LSO */
+                op_own = cpu_to_be32(MLX4_OPCODE_LSO | (1 << 6)) |
+                        ((ring->prod & ring->size) ?
+                                cpu_to_be32(MLX4_EN_BIT_DESC_OWN) : 0);
+
+                /* Fill in the LSO prefix */
+                tx_desc->lso.mss_hdr_size = cpu_to_be32(
+                        skb_shinfo(skb)->gso_size << 16 | lso_header_size);
+
+                /* Copy headers;
+                 * note that we already verified that it is linear */
+                memcpy(tx_desc->lso.header, skb->data, lso_header_size);
+                data = ((void *) &tx_desc->lso +
+                        ALIGN(lso_header_size + 4, DS_SIZE));
+
+                priv->port_stats.tso_packets++;
+                i = ((skb->len - lso_header_size) / skb_shinfo(skb)->gso_size) +
+                        !!((skb->len - lso_header_size) % skb_shinfo(skb)->gso_size);
+                ring->bytes += skb->len + (i - 1) * lso_header_size;
+                ring->packets += i;
+        } else {
+                /* Normal (Non LSO) packet */
+                op_own = cpu_to_be32(MLX4_OPCODE_SEND) |
+                        ((ring->prod & ring->size) ?
+                         cpu_to_be32(MLX4_EN_BIT_DESC_OWN) : 0);
+                data = &tx_desc->data;
+                ring->bytes += max(skb->len, (unsigned int) ETH_ZLEN);
+                ring->packets++;
+
+        }
+        AVG_PERF_COUNTER(priv->pstats.tx_pktsz_avg, skb->len);
+
+
+        /* valid only for none inline segments */
+        tx_info->data_offset = (void *) data - (void *) tx_desc;
+
+        tx_info->linear = (lso_header_size < skb_headlen(skb) && !is_inline(skb, NULL)) ? 1 : 0;
+        data += skb_shinfo(skb)->nr_frags + tx_info->linear - 1;
+
+        if (!is_inline(skb, &fragptr)) {
+                /* Map fragments */
+                for (i = skb_shinfo(skb)->nr_frags - 1; i >= 0; i--) {
+                        frag = &skb_shinfo(skb)->frags[i];
+                        dma = pci_map_page(mdev->dev->pdev, frag->page, frag->page_offset,
+                                           frag->size, PCI_DMA_TODEVICE);
+                        data->addr = cpu_to_be64(dma);
+                        data->lkey = cpu_to_be32(mdev->mr.key);
+                        wmb();
+                        data->byte_count = cpu_to_be32(frag->size);
+                        --data;
+                }
+
+                /* Map linear part */
+                if (tx_info->linear) {
+                        dma = pci_map_single(mdev->dev->pdev, skb->data + lso_header_size,
+                                             skb_headlen(skb) - lso_header_size, PCI_DMA_TODEVICE);
+                        data->addr = cpu_to_be64(dma);
+                        data->lkey = cpu_to_be32(mdev->mr.key);
+                        wmb();
+                        data->byte_count = cpu_to_be32(skb_headlen(skb) - lso_header_size);
+                }
+        } else
+                build_inline_wqe(tx_desc, skb, real_size, &vlan_tag, tx_ind, fragptr);
+
+        ring->prod += nr_txbb;
+
+        /* If we used a bounce buffer then copy descriptor back into place */
+        if (tx_desc == (struct mlx4_en_tx_desc *) ring->bounce_buf)
+                tx_desc = mlx4_en_bounce_to_desc(priv, ring, index, desc_size);
+
+        /* Run destructor before passing skb to HW */
+        if (likely(!skb_shared(skb)))
+                skb_orphan(skb);
+
+        /* Ensure new descirptor hits memory
+         * before setting ownership of this descriptor to HW */
+        wmb();
+        tx_desc->ctrl.owner_opcode = op_own;
+
+        /* Ring doorbell! */
+        wmb();
+        writel(ring->doorbell_qpn, mdev->uar_map + MLX4_SEND_DOORBELL);
+        dev->trans_start = jiffies;
+
+        /* Poll CQ here */
+        mlx4_en_xmit_poll(priv, tx_ind);
+
+        return 0;
+}
+
diff --git a/drivers/net/mlx4/eq.c b/drivers/net/mlx4/eq.c
index 8a8b56135a58..de169338cd90 100644
--- a/drivers/net/mlx4/eq.c
+++ b/drivers/net/mlx4/eq.c
@@ -558,7 +558,7 @@ int mlx4_init_eq_table(struct mlx4_dev *dev)
         int i;
 
         err = mlx4_bitmap_init(&priv->eq_table.bitmap, dev->caps.num_eqs,
-                               dev->caps.num_eqs - 1, dev->caps.reserved_eqs);
+                               dev->caps.num_eqs - 1, dev->caps.reserved_eqs, 0);
         if (err)
                 return err;
 
diff --git a/drivers/net/mlx4/fw.c b/drivers/net/mlx4/fw.c
index 7e32955da982..be09fdb79cb8 100644
--- a/drivers/net/mlx4/fw.c
+++ b/drivers/net/mlx4/fw.c
@@ -88,6 +88,7 @@ static void dump_dev_cap_flags(struct mlx4_dev *dev, u32 flags)
                 [ 8] = "P_Key violation counter",
                 [ 9] = "Q_Key violation counter",
                 [10] = "VMM",
+                [12] = "DPDP",
                 [16] = "MW support",
                 [17] = "APM support",
                 [18] = "Atomic ops support",
@@ -346,7 +347,7 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
                         MLX4_GET(field, outbox, QUERY_DEV_CAP_VL_PORT_OFFSET);
                         dev_cap->max_vl[i]         = field >> 4;
                         MLX4_GET(field, outbox, QUERY_DEV_CAP_MTU_WIDTH_OFFSET);
-                        dev_cap->max_mtu[i]        = field >> 4;
+                        dev_cap->ib_mtu[i]         = field >> 4;
                         dev_cap->max_port_width[i] = field & 0xf;
                         MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_GID_OFFSET);
                         dev_cap->max_gids[i]       = 1 << (field & 0xf);
@@ -354,9 +355,13 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
                         dev_cap->max_pkeys[i]      = 1 << (field & 0xf);
                 }
         } else {
+#define QUERY_PORT_SUPPORTED_TYPE_OFFSET        0x00
 #define QUERY_PORT_MTU_OFFSET                   0x01
+#define QUERY_PORT_ETH_MTU_OFFSET               0x02
 #define QUERY_PORT_WIDTH_OFFSET                 0x06
 #define QUERY_PORT_MAX_GID_PKEY_OFFSET          0x07
+#define QUERY_PORT_MAC_OFFSET                   0x08
+#define QUERY_PORT_MAX_MACVLAN_OFFSET           0x0a
 #define QUERY_PORT_MAX_VL_OFFSET                0x0b
 
                 for (i = 1; i <= dev_cap->num_ports; ++i) {
@@ -365,8 +370,10 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
                         if (err)
                                 goto out;
 
+                        MLX4_GET(field, outbox, QUERY_PORT_SUPPORTED_TYPE_OFFSET);
+                        dev_cap->supported_port_types[i] = field & 3;
                         MLX4_GET(field, outbox, QUERY_PORT_MTU_OFFSET);
-                        dev_cap->max_mtu[i]        = field & 0xf;
+                        dev_cap->ib_mtu[i]         = field & 0xf;
                         MLX4_GET(field, outbox, QUERY_PORT_WIDTH_OFFSET);
                         dev_cap->max_port_width[i] = field & 0xf;
                         MLX4_GET(field, outbox, QUERY_PORT_MAX_GID_PKEY_OFFSET);
@@ -374,6 +381,11 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
                         dev_cap->max_pkeys[i]      = 1 << (field & 0xf);
                         MLX4_GET(field, outbox, QUERY_PORT_MAX_VL_OFFSET);
                         dev_cap->max_vl[i]         = field & 0xf;
+                        MLX4_GET(field, outbox, QUERY_PORT_MAX_MACVLAN_OFFSET);
+                        dev_cap->log_max_macs[i]  = field & 0xf;
+                        dev_cap->log_max_vlans[i] = field >> 4;
+                        MLX4_GET(dev_cap->eth_mtu[i], outbox, QUERY_PORT_ETH_MTU_OFFSET);
+                        MLX4_GET(dev_cap->def_mac[i], outbox, QUERY_PORT_MAC_OFFSET);
                 }
         }
 
@@ -407,7 +419,7 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
         mlx4_dbg(dev, "Max CQEs: %d, max WQEs: %d, max SRQ WQEs: %d\n",
                  dev_cap->max_cq_sz, dev_cap->max_qp_sz, dev_cap->max_srq_sz);
         mlx4_dbg(dev, "Local CA ACK delay: %d, max MTU: %d, port width cap: %d\n",
-                 dev_cap->local_ca_ack_delay, 128 << dev_cap->max_mtu[1],
+                 dev_cap->local_ca_ack_delay, 128 << dev_cap->ib_mtu[1],
                  dev_cap->max_port_width[1]);
         mlx4_dbg(dev, "Max SQ desc size: %d, max SQ S/G: %d\n",
                  dev_cap->max_sq_desc_sz, dev_cap->max_sq_sg);
@@ -819,7 +831,7 @@ int mlx4_INIT_PORT(struct mlx4_dev *dev, int port)
                 flags |= (dev->caps.port_width_cap[port] & 0xf) << INIT_PORT_PORT_WIDTH_SHIFT;
                 MLX4_PUT(inbox, flags,            INIT_PORT_FLAGS_OFFSET);
 
-                field = 128 << dev->caps.mtu_cap[port];
+                field = 128 << dev->caps.ib_mtu_cap[port];
                 MLX4_PUT(inbox, field, INIT_PORT_MTU_OFFSET);
                 field = dev->caps.gid_table_len[port];
                 MLX4_PUT(inbox, field, INIT_PORT_MAX_GID_OFFSET);
diff --git a/drivers/net/mlx4/fw.h b/drivers/net/mlx4/fw.h
index decbb5c2ad41..526d7f30c041 100644
--- a/drivers/net/mlx4/fw.h
+++ b/drivers/net/mlx4/fw.h
@@ -66,11 +66,13 @@ struct mlx4_dev_cap {
         int local_ca_ack_delay;
         int num_ports;
         u32 max_msg_sz;
-        int max_mtu[MLX4_MAX_PORTS + 1];
+        int ib_mtu[MLX4_MAX_PORTS + 1];
         int max_port_width[MLX4_MAX_PORTS + 1];
         int max_vl[MLX4_MAX_PORTS + 1];
         int max_gids[MLX4_MAX_PORTS + 1];
         int max_pkeys[MLX4_MAX_PORTS + 1];
+        u64 def_mac[MLX4_MAX_PORTS + 1];
+        u16 eth_mtu[MLX4_MAX_PORTS + 1];
         u16 stat_rate_support;
         u32 flags;
         int reserved_uars;
@@ -102,6 +104,9 @@ struct mlx4_dev_cap {
         u32 reserved_lkey;
         u64 max_icm_sz;
         int max_gso_sz;
+        u8  supported_port_types[MLX4_MAX_PORTS + 1];
+        u8  log_max_macs[MLX4_MAX_PORTS + 1];
+        u8  log_max_vlans[MLX4_MAX_PORTS + 1];
 };
 
 struct mlx4_adapter {
diff --git a/drivers/net/mlx4/main.c b/drivers/net/mlx4/main.c
index 1252a919de2e..468921b8f4b6 100644
--- a/drivers/net/mlx4/main.c
+++ b/drivers/net/mlx4/main.c
@@ -85,6 +85,57 @@ static struct mlx4_profile default_profile = {
         .num_mtt        = 1 << 20,
 };
 
+static int log_num_mac = 2;
+module_param_named(log_num_mac, log_num_mac, int, 0444);
+MODULE_PARM_DESC(log_num_mac, "Log2 max number of MACs per ETH port (1-7)");
+
+static int log_num_vlan;
+module_param_named(log_num_vlan, log_num_vlan, int, 0444);
+MODULE_PARM_DESC(log_num_vlan, "Log2 max number of VLANs per ETH port (0-7)");
+
+static int use_prio;
+module_param_named(use_prio, use_prio, bool, 0444);
+MODULE_PARM_DESC(use_prio, "Enable steering by VLAN priority on ETH ports "
+                  "(0/1, default 0)");
+
+static int mlx4_check_port_params(struct mlx4_dev *dev,
+                                  enum mlx4_port_type *port_type)
+{
+        int i;
+
+        for (i = 0; i < dev->caps.num_ports - 1; i++) {
+                if (port_type[i] != port_type[i+1] &&
+                    !(dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP)) {
+                        mlx4_err(dev, "Only same port types supported "
+                                 "on this HCA, aborting.\n");
+                        return -EINVAL;
+                }
+        }
+        if ((port_type[0] == MLX4_PORT_TYPE_ETH) &&
+            (port_type[1] == MLX4_PORT_TYPE_IB)) {
+                mlx4_err(dev, "eth-ib configuration is not supported.\n");
+                return -EINVAL;
+        }
+
+        for (i = 0; i < dev->caps.num_ports; i++) {
+                if (!(port_type[i] & dev->caps.supported_type[i+1])) {
+                        mlx4_err(dev, "Requested port type for port %d is not "
+                                      "supported on this HCA\n", i + 1);
+                        return -EINVAL;
+                }
+        }
+        return 0;
+}
+
+static void mlx4_set_port_mask(struct mlx4_dev *dev)
+{
+        int i;
+
+        dev->caps.port_mask = 0;
+        for (i = 1; i <= dev->caps.num_ports; ++i)
+                if (dev->caps.port_type[i] == MLX4_PORT_TYPE_IB)
+                        dev->caps.port_mask |= 1 << (i - 1);
+}
 static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
 {
         int err;
@@ -120,10 +171,13 @@ static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
         dev->caps.num_ports          = dev_cap->num_ports;
         for (i = 1; i <= dev->caps.num_ports; ++i) {
                 dev->caps.vl_cap[i]         = dev_cap->max_vl[i];
-                dev->caps.mtu_cap[i]        = dev_cap->max_mtu[i];
+                dev->caps.ib_mtu_cap[i]     = dev_cap->ib_mtu[i];
                 dev->caps.gid_table_len[i]  = dev_cap->max_gids[i];
                 dev->caps.pkey_table_len[i] = dev_cap->max_pkeys[i];
                 dev->caps.port_width_cap[i] = dev_cap->max_port_width[i];
+                dev->caps.eth_mtu_cap[i]    = dev_cap->eth_mtu[i];
+                dev->caps.def_mac[i]        = dev_cap->def_mac[i];
+                dev->caps.supported_type[i] = dev_cap->supported_port_types[i];
         }
 
         dev->caps.num_uars           = dev_cap->uar_size / PAGE_SIZE;
@@ -134,7 +188,6 @@ static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
         dev->caps.max_rq_sg          = dev_cap->max_rq_sg;
         dev->caps.max_wqes           = dev_cap->max_qp_sz;
         dev->caps.max_qp_init_rdma   = dev_cap->max_requester_per_qp;
-        dev->caps.reserved_qps       = dev_cap->reserved_qps;
         dev->caps.max_srq_wqes       = dev_cap->max_srq_sz;
         dev->caps.max_srq_sge        = dev_cap->max_rq_sg - 1;
         dev->caps.reserved_srqs      = dev_cap->reserved_srqs;
@@ -163,9 +216,138 @@ static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
         dev->caps.stat_rate_support  = dev_cap->stat_rate_support;
         dev->caps.max_gso_sz         = dev_cap->max_gso_sz;
 
+        dev->caps.log_num_macs  = log_num_mac;
+        dev->caps.log_num_vlans = log_num_vlan;
+        dev->caps.log_num_prios = use_prio ? 3 : 0;
+
+        for (i = 1; i <= dev->caps.num_ports; ++i) {
+                if (dev->caps.supported_type[i] != MLX4_PORT_TYPE_ETH)
+                        dev->caps.port_type[i] = MLX4_PORT_TYPE_IB;
+                else
+                        dev->caps.port_type[i] = MLX4_PORT_TYPE_ETH;
+
+                if (dev->caps.log_num_macs > dev_cap->log_max_macs[i]) {
+                        dev->caps.log_num_macs = dev_cap->log_max_macs[i];
+                        mlx4_warn(dev, "Requested number of MACs is too much "
+                                  "for port %d, reducing to %d.\n",
+                                  i, 1 << dev->caps.log_num_macs);
+                }
+                if (dev->caps.log_num_vlans > dev_cap->log_max_vlans[i]) {
+                        dev->caps.log_num_vlans = dev_cap->log_max_vlans[i];
+                        mlx4_warn(dev, "Requested number of VLANs is too much "
+                                  "for port %d, reducing to %d.\n",
+                                  i, 1 << dev->caps.log_num_vlans);
+                }
+        }
+
+        mlx4_set_port_mask(dev);
+
+        dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] = dev_cap->reserved_qps;
+        dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] =
+                dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_ADDR] =
+                (1 << dev->caps.log_num_macs) *
+                (1 << dev->caps.log_num_vlans) *
+                (1 << dev->caps.log_num_prios) *
+                dev->caps.num_ports;
+        dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH] = MLX4_NUM_FEXCH;
+
+        dev->caps.reserved_qps = dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] +
+                dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] +
+                dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_ADDR] +
+                dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH];
+
         return 0;
 }
 
+/*
+ * Change the port configuration of the device.
+ * Every user of this function must hold the port mutex.
+ */
+static int mlx4_change_port_types(struct mlx4_dev *dev,
+                                  enum mlx4_port_type *port_types)
+{
+        int err = 0;
+        int change = 0;
+        int port;
+
+        for (port = 0; port <  dev->caps.num_ports; port++) {
+                if (port_types[port] != dev->caps.port_type[port + 1]) {
+                        change = 1;
+                        dev->caps.port_type[port + 1] = port_types[port];
+                }
+        }
+        if (change) {
+                mlx4_unregister_device(dev);
+                for (port = 1; port <= dev->caps.num_ports; port++) {
+                        mlx4_CLOSE_PORT(dev, port);
+                        err = mlx4_SET_PORT(dev, port);
+                        if (err) {
+                                mlx4_err(dev, "Failed to set port %d, "
+                                              "aborting\n", port);
+                                goto out;
+                        }
+                }
+                mlx4_set_port_mask(dev);
+                err = mlx4_register_device(dev);
+        }
+
+out:
+        return err;
+}
+
+static ssize_t show_port_type(struct device *dev,
+                              struct device_attribute *attr,
+                              char *buf)
+{
+        struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
+                                                   port_attr);
+        struct mlx4_dev *mdev = info->dev;
+
+        return sprintf(buf, "%s\n",
+                       mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_IB ?
+                       "ib" : "eth");
+}
+
+static ssize_t set_port_type(struct device *dev,
+                             struct device_attribute *attr,
+                             const char *buf, size_t count)
+{
+        struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
+                                                   port_attr);
+        struct mlx4_dev *mdev = info->dev;
+        struct mlx4_priv *priv = mlx4_priv(mdev);
+        enum mlx4_port_type types[MLX4_MAX_PORTS];
+        int i;
+        int err = 0;
+
+        if (!strcmp(buf, "ib\n"))
+                info->tmp_type = MLX4_PORT_TYPE_IB;
+        else if (!strcmp(buf, "eth\n"))
+                info->tmp_type = MLX4_PORT_TYPE_ETH;
+        else {
+                mlx4_err(mdev, "%s is not supported port type\n", buf);
+                return -EINVAL;
+        }
+
+        mutex_lock(&priv->port_mutex);
+        for (i = 0; i < mdev->caps.num_ports; i++)
+                types[i] = priv->port[i+1].tmp_type ? priv->port[i+1].tmp_type :
+                                        mdev->caps.port_type[i+1];
+
+        err = mlx4_check_port_params(mdev, types);
+        if (err)
+                goto out;
+
+        for (i = 1; i <= mdev->caps.num_ports; i++)
+                priv->port[i].tmp_type = 0;
+
+        err = mlx4_change_port_types(mdev, types);
+
+out:
+        mutex_unlock(&priv->port_mutex);
+        return err ? err : count;
+}
+
 static int mlx4_load_fw(struct mlx4_dev *dev)
 {
         struct mlx4_priv *priv = mlx4_priv(dev);
@@ -211,7 +393,8 @@ static int mlx4_init_cmpt_table(struct mlx4_dev *dev, u64 cmpt_base,
                                   ((u64) (MLX4_CMPT_TYPE_QP *
                                           cmpt_entry_sz) << MLX4_CMPT_SHIFT),
                                   cmpt_entry_sz, dev->caps.num_qps,
-                                  dev->caps.reserved_qps, 0, 0);
+                                  dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
+                                  0, 0);
         if (err)
                 goto err;
 
@@ -336,7 +519,8 @@ static int mlx4_init_icm(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap,
                                   init_hca->qpc_base,
                                   dev_cap->qpc_entry_sz,
                                   dev->caps.num_qps,
-                                  dev->caps.reserved_qps, 0, 0);
+                                  dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
+                                  0, 0);
         if (err) {
                 mlx4_err(dev, "Failed to map QP context memory, aborting.\n");
                 goto err_unmap_dmpt;
@@ -346,7 +530,8 @@ static int mlx4_init_icm(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap,
                                   init_hca->auxc_base,
                                   dev_cap->aux_entry_sz,
                                   dev->caps.num_qps,
-                                  dev->caps.reserved_qps, 0, 0);
+                                  dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
+                                  0, 0);
         if (err) {
                 mlx4_err(dev, "Failed to map AUXC context memory, aborting.\n");
                 goto err_unmap_qp;
@@ -356,7 +541,8 @@ static int mlx4_init_icm(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap,
                                   init_hca->altc_base,
                                   dev_cap->altc_entry_sz,
                                   dev->caps.num_qps,
-                                  dev->caps.reserved_qps, 0, 0);
+                                  dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
+                                  0, 0);
         if (err) {
                 mlx4_err(dev, "Failed to map ALTC context memory, aborting.\n");
                 goto err_unmap_auxc;
@@ -366,7 +552,8 @@ static int mlx4_init_icm(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap,
                                   init_hca->rdmarc_base,
                                   dev_cap->rdmarc_entry_sz << priv->qp_table.rdmarc_shift,
                                   dev->caps.num_qps,
-                                  dev->caps.reserved_qps, 0, 0);
+                                  dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
+                                  0, 0);
         if (err) {
                 mlx4_err(dev, "Failed to map RDMARC context memory, aborting\n");
                 goto err_unmap_altc;
@@ -565,6 +752,7 @@ static int mlx4_setup_hca(struct mlx4_dev *dev)
 {
         struct mlx4_priv *priv = mlx4_priv(dev);
         int err;
+        int port;
 
         err = mlx4_init_uar_table(dev);
         if (err) {
@@ -663,8 +851,20 @@ static int mlx4_setup_hca(struct mlx4_dev *dev)
                 goto err_qp_table_free;
         }
 
+        for (port = 1; port <= dev->caps.num_ports; port++) {
+                err = mlx4_SET_PORT(dev, port);
+                if (err) {
+                        mlx4_err(dev, "Failed to set port %d, aborting\n",
+                                port);
+                        goto err_mcg_table_free;
+                }
+        }
+
         return 0;
 
+err_mcg_table_free:
+        mlx4_cleanup_mcg_table(dev);
+
 err_qp_table_free:
         mlx4_cleanup_qp_table(dev);
 
@@ -728,11 +928,45 @@ no_msi:
                 priv->eq_table.eq[i].irq = dev->pdev->irq;
 }
 
+static int mlx4_init_port_info(struct mlx4_dev *dev, int port)
+{
+        struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
+        int err = 0;
+
+        info->dev = dev;
+        info->port = port;
+        mlx4_init_mac_table(dev, &info->mac_table);
+        mlx4_init_vlan_table(dev, &info->vlan_table);
+
+        sprintf(info->dev_name, "mlx4_port%d", port);
+        info->port_attr.attr.name = info->dev_name;
+        info->port_attr.attr.mode = S_IRUGO | S_IWUSR;
+        info->port_attr.show      = show_port_type;
+        info->port_attr.store     = set_port_type;
+
+        err = device_create_file(&dev->pdev->dev, &info->port_attr);
+        if (err) {
+                mlx4_err(dev, "Failed to create file for port %d\n", port);
+                info->port = -1;
+        }
+
+        return err;
+}
+
+static void mlx4_cleanup_port_info(struct mlx4_port_info *info)
+{
+        if (info->port < 0)
+                return;
+
+        device_remove_file(&info->dev->pdev->dev, &info->port_attr);
+}
+
 static int __mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
 {
         struct mlx4_priv *priv;
         struct mlx4_dev *dev;
         int err;
+        int port;
 
         printk(KERN_INFO PFX "Initializing %s\n",
                pci_name(pdev));
@@ -807,6 +1041,8 @@ static int __mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
         INIT_LIST_HEAD(&priv->ctx_list);
         spin_lock_init(&priv->ctx_lock);
 
+        mutex_init(&priv->port_mutex);
+
         INIT_LIST_HEAD(&priv->pgdir_list);
         mutex_init(&priv->pgdir_mutex);
 
@@ -842,15 +1078,24 @@ static int __mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
         if (err)
                 goto err_close;
 
+        for (port = 1; port <= dev->caps.num_ports; port++) {
+                err = mlx4_init_port_info(dev, port);
+                if (err)
+                        goto err_port;
+        }
+
         err = mlx4_register_device(dev);
         if (err)
-                goto err_cleanup;
+                goto err_port;
 
         pci_set_drvdata(pdev, dev);
 
         return 0;
 
-err_cleanup:
+err_port:
+        for (port = 1; port <= dev->caps.num_ports; port++)
+                mlx4_cleanup_port_info(&priv->port[port]);
+
         mlx4_cleanup_mcg_table(dev);
         mlx4_cleanup_qp_table(dev);
         mlx4_cleanup_srq_table(dev);
@@ -907,8 +1152,10 @@ static void mlx4_remove_one(struct pci_dev *pdev)
         if (dev) {
                 mlx4_unregister_device(dev);
 
-                for (p = 1; p <= dev->caps.num_ports; ++p)
+                for (p = 1; p <= dev->caps.num_ports; p++) {
+                        mlx4_cleanup_port_info(&priv->port[p]);
                         mlx4_CLOSE_PORT(dev, p);
+                }
 
                 mlx4_cleanup_mcg_table(dev);
                 mlx4_cleanup_qp_table(dev);
@@ -948,6 +1195,8 @@ static struct pci_device_id mlx4_pci_table[] = {
         { PCI_VDEVICE(MELLANOX, 0x6354) }, /* MT25408 "Hermon" QDR */
         { PCI_VDEVICE(MELLANOX, 0x6732) }, /* MT25408 "Hermon" DDR PCIe gen2 */
         { PCI_VDEVICE(MELLANOX, 0x673c) }, /* MT25408 "Hermon" QDR PCIe gen2 */
+        { PCI_VDEVICE(MELLANOX, 0x6368) }, /* MT25408 "Hermon" EN 10GigE */
+        { PCI_VDEVICE(MELLANOX, 0x6750) }, /* MT25408 "Hermon" EN 10GigE PCIe gen2 */
         { 0, }
 };
 
@@ -960,10 +1209,28 @@ static struct pci_driver mlx4_driver = {
         .remove         = __devexit_p(mlx4_remove_one)
 };
 
+static int __init mlx4_verify_params(void)
+{
+        if ((log_num_mac < 0) || (log_num_mac > 7)) {
+                printk(KERN_WARNING "mlx4_core: bad num_mac: %d\n", log_num_mac);
+                return -1;
+        }
+
+        if ((log_num_vlan < 0) || (log_num_vlan > 7)) {
+                printk(KERN_WARNING "mlx4_core: bad num_vlan: %d\n", log_num_vlan);
+                return -1;
+        }
+
+        return 0;
+}
+
 static int __init mlx4_init(void)
 {
         int ret;
 
+        if (mlx4_verify_params())
+                return -EINVAL;
+
         ret = mlx4_catas_init();
         if (ret)
                 return ret;
diff --git a/drivers/net/mlx4/mcg.c b/drivers/net/mlx4/mcg.c
index c83f88ce0736..592c01ae2c5d 100644
--- a/drivers/net/mlx4/mcg.c
+++ b/drivers/net/mlx4/mcg.c
@@ -368,8 +368,8 @@ int mlx4_init_mcg_table(struct mlx4_dev *dev)
         struct mlx4_priv *priv = mlx4_priv(dev);
         int err;
 
-        err = mlx4_bitmap_init(&priv->mcg_table.bitmap,
-                               dev->caps.num_amgms, dev->caps.num_amgms - 1, 0);
+        err = mlx4_bitmap_init(&priv->mcg_table.bitmap, dev->caps.num_amgms,
+                               dev->caps.num_amgms - 1, 0, 0);
         if (err)
                 return err;
 
diff --git a/drivers/net/mlx4/mlx4.h b/drivers/net/mlx4/mlx4.h
index 5337e3ac3e78..fa431fad0eec 100644
--- a/drivers/net/mlx4/mlx4.h
+++ b/drivers/net/mlx4/mlx4.h
@@ -111,6 +111,7 @@ struct mlx4_bitmap {
         u32                     last;
         u32                     top;
         u32                     max;
+        u32                     reserved_top;
         u32                     mask;
         spinlock_t              lock;
         unsigned long          *table;
@@ -251,6 +252,38 @@ struct mlx4_catas_err {
         struct list_head        list;
 };
 
+#define MLX4_MAX_MAC_NUM        128
+#define MLX4_MAC_TABLE_SIZE     (MLX4_MAX_MAC_NUM << 3)
+
+struct mlx4_mac_table {
+        __be64                  entries[MLX4_MAX_MAC_NUM];
+        int                     refs[MLX4_MAX_MAC_NUM];
+        struct mutex            mutex;
+        int                     total;
+        int                     max;
+};
+
+#define MLX4_MAX_VLAN_NUM       128
+#define MLX4_VLAN_TABLE_SIZE    (MLX4_MAX_VLAN_NUM << 2)
+
+struct mlx4_vlan_table {
+        __be32                  entries[MLX4_MAX_VLAN_NUM];
+        int                     refs[MLX4_MAX_VLAN_NUM];
+        struct mutex            mutex;
+        int                     total;
+        int                     max;
+};
+
+struct mlx4_port_info {
+        struct mlx4_dev        *dev;
+        int                     port;
+        char                    dev_name[16];
+        struct device_attribute port_attr;
+        enum mlx4_port_type     tmp_type;
+        struct mlx4_mac_table   mac_table;
+        struct mlx4_vlan_table  vlan_table;
+};
+
 struct mlx4_priv {
         struct mlx4_dev         dev;
 
@@ -279,6 +312,8 @@ struct mlx4_priv {
 
         struct mlx4_uar         driver_uar;
         void __iomem           *kar;
+        struct mlx4_port_info   port[MLX4_MAX_PORTS + 1];
+        struct mutex            port_mutex;
 };
 
 static inline struct mlx4_priv *mlx4_priv(struct mlx4_dev *dev)
@@ -288,7 +323,10 @@ static inline struct mlx4_priv *mlx4_priv(struct mlx4_dev *dev)
 
 u32 mlx4_bitmap_alloc(struct mlx4_bitmap *bitmap);
 void mlx4_bitmap_free(struct mlx4_bitmap *bitmap, u32 obj);
-int mlx4_bitmap_init(struct mlx4_bitmap *bitmap, u32 num, u32 mask, u32 reserved);
+u32 mlx4_bitmap_alloc_range(struct mlx4_bitmap *bitmap, int cnt, int align);
+void mlx4_bitmap_free_range(struct mlx4_bitmap *bitmap, u32 obj, int cnt);
+int mlx4_bitmap_init(struct mlx4_bitmap *bitmap, u32 num, u32 mask,
+                     u32 reserved_bot, u32 resetrved_top);
 void mlx4_bitmap_cleanup(struct mlx4_bitmap *bitmap);
 
 int mlx4_reset(struct mlx4_dev *dev);
@@ -346,4 +384,9 @@ void mlx4_srq_event(struct mlx4_dev *dev, u32 srqn, int event_type);
 
 void mlx4_handle_catas_err(struct mlx4_dev *dev);
 
+void mlx4_init_mac_table(struct mlx4_dev *dev, struct mlx4_mac_table *table);
+void mlx4_init_vlan_table(struct mlx4_dev *dev, struct mlx4_vlan_table *table);
+
+int mlx4_SET_PORT(struct mlx4_dev *dev, u8 port);
+
 #endif /* MLX4_H */
diff --git a/drivers/net/mlx4/mlx4_en.h b/drivers/net/mlx4/mlx4_en.h
new file mode 100644
index 000000000000..11fb17c6e97b
--- /dev/null
+++ b/drivers/net/mlx4/mlx4_en.h
@@ -0,0 +1,561 @@
+/*
+ * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#ifndef _MLX4_EN_H_
+#define _MLX4_EN_H_
+
+#include <linux/compiler.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/netdevice.h>
+#include <linux/inet_lro.h>
+
+#include <linux/mlx4/device.h>
+#include <linux/mlx4/qp.h>
+#include <linux/mlx4/cq.h>
+#include <linux/mlx4/srq.h>
+#include <linux/mlx4/doorbell.h>
+
+#include "en_port.h"
+
+#define DRV_NAME        "mlx4_en"
+#define DRV_VERSION     "1.4.0"
+#define DRV_RELDATE     "Sep 2008"
+
+
+#define MLX4_EN_MSG_LEVEL       (NETIF_MSG_LINK | NETIF_MSG_IFDOWN)
+
+#define mlx4_dbg(mlevel, priv, format, arg...)  \
+        if (NETIF_MSG_##mlevel & priv->msg_enable) \
+        printk(KERN_DEBUG "%s %s: " format , DRV_NAME ,\
+                (&priv->mdev->pdev->dev)->bus_id , ## arg)
+
+#define mlx4_err(mdev, format, arg...) \
+        printk(KERN_ERR "%s %s: " format , DRV_NAME ,\
+                (&mdev->pdev->dev)->bus_id , ## arg)
+#define mlx4_info(mdev, format, arg...) \
+        printk(KERN_INFO "%s %s: " format , DRV_NAME ,\
+                (&mdev->pdev->dev)->bus_id , ## arg)
+#define mlx4_warn(mdev, format, arg...) \
+        printk(KERN_WARNING "%s %s: " format , DRV_NAME ,\
+                (&mdev->pdev->dev)->bus_id , ## arg)
+
+/*
+ * Device constants
+ */
+
+
+#define MLX4_EN_PAGE_SHIFT      12
+#define MLX4_EN_PAGE_SIZE       (1 << MLX4_EN_PAGE_SHIFT)
+#define MAX_TX_RINGS            16
+#define MAX_RX_RINGS            16
+#define MAX_RSS_MAP_SIZE        64
+#define RSS_FACTOR              2
+#define TXBB_SIZE               64
+#define HEADROOM                (2048 / TXBB_SIZE + 1)
+#define MAX_LSO_HDR_SIZE        92
+#define STAMP_STRIDE            64
+#define STAMP_DWORDS            (STAMP_STRIDE / 4)
+#define STAMP_SHIFT             31
+#define STAMP_VAL               0x7fffffff
+#define STATS_DELAY             (HZ / 4)
+
+/* Typical TSO descriptor with 16 gather entries is 352 bytes... */
+#define MAX_DESC_SIZE           512
+#define MAX_DESC_TXBBS          (MAX_DESC_SIZE / TXBB_SIZE)
+
+/*
+ * OS related constants and tunables
+ */
+
+#define MLX4_EN_WATCHDOG_TIMEOUT        (15 * HZ)
+
+#define MLX4_EN_ALLOC_ORDER     2
+#define MLX4_EN_ALLOC_SIZE      (PAGE_SIZE << MLX4_EN_ALLOC_ORDER)
+
+#define MLX4_EN_MAX_LRO_DESCRIPTORS     32
+
+/* Receive fragment sizes; we use at most 4 fragments (for 9600 byte MTU
+ * and 4K allocations) */
+enum {
+        FRAG_SZ0 = 512 - NET_IP_ALIGN,
+        FRAG_SZ1 = 1024,
+        FRAG_SZ2 = 4096,
+        FRAG_SZ3 = MLX4_EN_ALLOC_SIZE
+};
+#define MLX4_EN_MAX_RX_FRAGS    4
+
+/* Minimum ring size for our page-allocation sceme to work */
+#define MLX4_EN_MIN_RX_SIZE     (MLX4_EN_ALLOC_SIZE / SMP_CACHE_BYTES)
+#define MLX4_EN_MIN_TX_SIZE     (4096 / TXBB_SIZE)
+
+#define MLX4_EN_TX_RING_NUM             9
+#define MLX4_EN_DEF_TX_RING_SIZE        1024
+#define MLX4_EN_DEF_RX_RING_SIZE        1024
+
+/* Target number of bytes to coalesce with interrupt moderation */
+#define MLX4_EN_RX_COAL_TARGET  0x20000
+#define MLX4_EN_RX_COAL_TIME    0x10
+
+#define MLX4_EN_TX_COAL_PKTS    5
+#define MLX4_EN_TX_COAL_TIME    0x80
+
+#define MLX4_EN_RX_RATE_LOW             400000
+#define MLX4_EN_RX_COAL_TIME_LOW        0
+#define MLX4_EN_RX_RATE_HIGH            450000
+#define MLX4_EN_RX_COAL_TIME_HIGH       128
+#define MLX4_EN_RX_SIZE_THRESH          1024
+#define MLX4_EN_RX_RATE_THRESH          (1000000 / MLX4_EN_RX_COAL_TIME_HIGH)
+#define MLX4_EN_SAMPLE_INTERVAL         0
+
+#define MLX4_EN_AUTO_CONF       0xffff
+
+#define MLX4_EN_DEF_RX_PAUSE    1
+#define MLX4_EN_DEF_TX_PAUSE    1
+
+/* Interval between sucessive polls in the Tx routine when polling is used
+   instead of interrupts (in per-core Tx rings) - should be power of 2 */
+#define MLX4_EN_TX_POLL_MODER   16
+#define MLX4_EN_TX_POLL_TIMEOUT (HZ / 4)
+
+#define ETH_LLC_SNAP_SIZE       8
+
+#define SMALL_PACKET_SIZE      (256 - NET_IP_ALIGN)
+#define HEADER_COPY_SIZE       (128 - NET_IP_ALIGN)
+
+#define MLX4_EN_MIN_MTU         46
+#define ETH_BCAST               0xffffffffffffULL
+
+#ifdef MLX4_EN_PERF_STAT
+/* Number of samples to 'average' */
+#define AVG_SIZE                        128
+#define AVG_FACTOR                      1024
+#define NUM_PERF_STATS                  NUM_PERF_COUNTERS
+
+#define INC_PERF_COUNTER(cnt)           (++(cnt))
+#define ADD_PERF_COUNTER(cnt, add)      ((cnt) += (add))
+#define AVG_PERF_COUNTER(cnt, sample) \
+        ((cnt) = ((cnt) * (AVG_SIZE - 1) + (sample) * AVG_FACTOR) / AVG_SIZE)
+#define GET_PERF_COUNTER(cnt)           (cnt)
+#define GET_AVG_PERF_COUNTER(cnt)       ((cnt) / AVG_FACTOR)
+
+#else
+
+#define NUM_PERF_STATS                  0
+#define INC_PERF_COUNTER(cnt)           do {} while (0)
+#define ADD_PERF_COUNTER(cnt, add)      do {} while (0)
+#define AVG_PERF_COUNTER(cnt, sample)   do {} while (0)
+#define GET_PERF_COUNTER(cnt)           (0)
+#define GET_AVG_PERF_COUNTER(cnt)       (0)
+#endif /* MLX4_EN_PERF_STAT */
+
+/*
+ * Configurables
+ */
+
+enum cq_type {
+        RX = 0,
+        TX = 1,
+};
+
+
+/*
+ * Useful macros
+ */
+#define ROUNDUP_LOG2(x)         ilog2(roundup_pow_of_two(x))
+#define XNOR(x, y)              (!(x) == !(y))
+#define ILLEGAL_MAC(addr)       (addr == 0xffffffffffffULL || addr == 0x0)
+
+
+struct mlx4_en_tx_info {
+        struct sk_buff *skb;
+        u32 nr_txbb;
+        u8 linear;
+        u8 data_offset;
+};
+
+
+#define MLX4_EN_BIT_DESC_OWN    0x80000000
+#define CTRL_SIZE       sizeof(struct mlx4_wqe_ctrl_seg)
+#define MLX4_EN_MEMTYPE_PAD     0x100
+#define DS_SIZE         sizeof(struct mlx4_wqe_data_seg)
+
+
+struct mlx4_en_tx_desc {
+        struct mlx4_wqe_ctrl_seg ctrl;
+        union {
+                struct mlx4_wqe_data_seg data; /* at least one data segment */
+                struct mlx4_wqe_lso_seg lso;
+                struct mlx4_wqe_inline_seg inl;
+        };
+};
+
+#define MLX4_EN_USE_SRQ         0x01000000
+
+struct mlx4_en_rx_alloc {
+        struct page *page;
+        u16 offset;
+};
+
+struct mlx4_en_tx_ring {
+        struct mlx4_hwq_resources wqres;
+        u32 size ; /* number of TXBBs */
+        u32 size_mask;
+        u16 stride;
+        u16 cqn;        /* index of port CQ associated with this ring */
+        u32 prod;
+        u32 cons;
+        u32 buf_size;
+        u32 doorbell_qpn;
+        void *buf;
+        u16 poll_cnt;
+        int blocked;
+        struct mlx4_en_tx_info *tx_info;
+        u8 *bounce_buf;
+        u32 last_nr_txbb;
+        struct mlx4_qp qp;
+        struct mlx4_qp_context context;
+        int qpn;
+        enum mlx4_qp_state qp_state;
+        struct mlx4_srq dummy;
+        unsigned long bytes;
+        unsigned long packets;
+        spinlock_t comp_lock;
+};
+
+struct mlx4_en_rx_desc {
+        struct mlx4_wqe_srq_next_seg next;
+        /* actual number of entries depends on rx ring stride */
+        struct mlx4_wqe_data_seg data[0];
+};
+
+struct mlx4_en_rx_ring {
+        struct mlx4_srq srq;
+        struct mlx4_hwq_resources wqres;
+        struct mlx4_en_rx_alloc page_alloc[MLX4_EN_MAX_RX_FRAGS];
+        struct net_lro_mgr lro;
+        u32 size ;      /* number of Rx descs*/
+        u32 actual_size;
+        u32 size_mask;
+        u16 stride;
+        u16 log_stride;
+        u16 cqn;        /* index of port CQ associated with this ring */
+        u32 prod;
+        u32 cons;
+        u32 buf_size;
+        int need_refill;
+        int full;
+        void *buf;
+        void *rx_info;
+        unsigned long bytes;
+        unsigned long packets;
+};
+
+
+static inline int mlx4_en_can_lro(__be16 status)
+{
+        return (status & cpu_to_be16(MLX4_CQE_STATUS_IPV4       |
+                                     MLX4_CQE_STATUS_IPV4F      |
+                                     MLX4_CQE_STATUS_IPV6       |
+                                     MLX4_CQE_STATUS_IPV4OPT    |
+                                     MLX4_CQE_STATUS_TCP        |
+                                     MLX4_CQE_STATUS_UDP        |
+                                     MLX4_CQE_STATUS_IPOK)) ==
+                cpu_to_be16(MLX4_CQE_STATUS_IPV4 |
+                            MLX4_CQE_STATUS_IPOK |
+                            MLX4_CQE_STATUS_TCP);
+}
+
+struct mlx4_en_cq {
+        struct mlx4_cq          mcq;
+        struct mlx4_hwq_resources wqres;
+        int                     ring;
+        spinlock_t              lock;
+        struct net_device      *dev;
+        struct napi_struct      napi;
+        /* Per-core Tx cq processing support */
+        struct timer_list timer;
+        int size;
+        int buf_size;
+        unsigned vector;
+        enum cq_type is_tx;
+        u16 moder_time;
+        u16 moder_cnt;
+        int armed;
+        struct mlx4_cqe *buf;
+#define MLX4_EN_OPCODE_ERROR    0x1e
+};
+
+struct mlx4_en_port_profile {
+        u32 flags;
+        u32 tx_ring_num;
+        u32 rx_ring_num;
+        u32 tx_ring_size;
+        u32 rx_ring_size;
+};
+
+struct mlx4_en_profile {
+        int rss_xor;
+        int num_lro;
+        u8 rss_mask;
+        u32 active_ports;
+        u32 small_pkt_int;
+        int rx_moder_cnt;
+        int rx_moder_time;
+        int auto_moder;
+        u8 rx_pause;
+        u8 rx_ppp;
+        u8 tx_pause;
+        u8 tx_ppp;
+        u8 no_reset;
+        struct mlx4_en_port_profile prof[MLX4_MAX_PORTS + 1];
+};
+
+struct mlx4_en_dev {
+        struct mlx4_dev         *dev;
+        struct pci_dev          *pdev;
+        struct mutex            state_lock;
+        struct net_device       *pndev[MLX4_MAX_PORTS + 1];
+        u32                     port_cnt;
+        bool                    device_up;
+        struct mlx4_en_profile  profile;
+        u32                     LSO_support;
+        struct workqueue_struct *workqueue;
+        struct device           *dma_device;
+        void __iomem            *uar_map;
+        struct mlx4_uar         priv_uar;
+        struct mlx4_mr          mr;
+        u32                     priv_pdn;
+        spinlock_t              uar_lock;
+};
+
+
+struct mlx4_en_rss_map {
+        int size;
+        int base_qpn;
+        u16 map[MAX_RSS_MAP_SIZE];
+        struct mlx4_qp qps[MAX_RSS_MAP_SIZE];
+        enum mlx4_qp_state state[MAX_RSS_MAP_SIZE];
+        struct mlx4_qp indir_qp;
+        enum mlx4_qp_state indir_state;
+};
+
+struct mlx4_en_rss_context {
+        __be32 base_qpn;
+        __be32 default_qpn;
+        u16 reserved;
+        u8 hash_fn;
+        u8 flags;
+        __be32 rss_key[10];
+};
+
+struct mlx4_en_pkt_stats {
+        unsigned long broadcast;
+        unsigned long rx_prio[8];
+        unsigned long tx_prio[8];
+#define NUM_PKT_STATS           17
+};
+
+struct mlx4_en_port_stats {
+        unsigned long lro_aggregated;
+        unsigned long lro_flushed;
+        unsigned long lro_no_desc;
+        unsigned long tso_packets;
+        unsigned long queue_stopped;
+        unsigned long wake_queue;
+        unsigned long tx_timeout;
+        unsigned long rx_alloc_failed;
+        unsigned long rx_chksum_good;
+        unsigned long rx_chksum_none;
+        unsigned long tx_chksum_offload;
+#define NUM_PORT_STATS          11
+};
+
+struct mlx4_en_perf_stats {
+        u32 tx_poll;
+        u64 tx_pktsz_avg;
+        u32 inflight_avg;
+        u16 tx_coal_avg;
+        u16 rx_coal_avg;
+        u32 napi_quota;
+#define NUM_PERF_COUNTERS               6
+};
+
+struct mlx4_en_frag_info {
+        u16 frag_size;
+        u16 frag_prefix_size;
+        u16 frag_stride;
+        u16 frag_align;
+        u16 last_offset;
+
+};
+
+struct mlx4_en_priv {
+        struct mlx4_en_dev *mdev;
+        struct mlx4_en_port_profile *prof;
+        struct net_device *dev;
+        struct vlan_group *vlgrp;
+        struct net_device_stats stats;
+        struct net_device_stats ret_stats;
+        spinlock_t stats_lock;
+
+        unsigned long last_moder_packets;
+        unsigned long last_moder_tx_packets;
+        unsigned long last_moder_bytes;
+        unsigned long last_moder_jiffies;
+        int last_moder_time;
+        u16 rx_usecs;
+        u16 rx_frames;
+        u16 tx_usecs;
+        u16 tx_frames;
+        u32 pkt_rate_low;
+        u16 rx_usecs_low;
+        u32 pkt_rate_high;
+        u16 rx_usecs_high;
+        u16 sample_interval;
+        u16 adaptive_rx_coal;
+        u32 msg_enable;
+
+        struct mlx4_hwq_resources res;
+        int link_state;
+        int last_link_state;
+        bool port_up;
+        int port;
+        int registered;
+        int allocated;
+        int stride;
+        int rx_csum;
+        u64 mac;
+        int mac_index;
+        unsigned max_mtu;
+        int base_qpn;
+
+        struct mlx4_en_rss_map rss_map;
+        u16 tx_prio_map[8];
+        u32 flags;
+#define MLX4_EN_FLAG_PROMISC    0x1
+        u32 tx_ring_num;
+        u32 rx_ring_num;
+        u32 rx_skb_size;
+        struct mlx4_en_frag_info frag_info[MLX4_EN_MAX_RX_FRAGS];
+        u16 num_frags;
+        u16 log_rx_info;
+
+        struct mlx4_en_tx_ring tx_ring[MAX_TX_RINGS];
+        struct mlx4_en_rx_ring rx_ring[MAX_RX_RINGS];
+        struct mlx4_en_cq tx_cq[MAX_TX_RINGS];
+        struct mlx4_en_cq rx_cq[MAX_RX_RINGS];
+        struct work_struct mcast_task;
+        struct work_struct mac_task;
+        struct delayed_work refill_task;
+        struct work_struct watchdog_task;
+        struct work_struct linkstate_task;
+        struct delayed_work stats_task;
+        struct mlx4_en_perf_stats pstats;
+        struct mlx4_en_pkt_stats pkstats;
+        struct mlx4_en_port_stats port_stats;
+        struct dev_mc_list *mc_list;
+        struct mlx4_en_stat_out_mbox hw_stats;
+};
+
+
+void mlx4_en_destroy_netdev(struct net_device *dev);
+int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
+                        struct mlx4_en_port_profile *prof);
+
+int mlx4_en_get_profile(struct mlx4_en_dev *mdev);
+
+int mlx4_en_create_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq,
+                      int entries, int ring, enum cq_type mode);
+void mlx4_en_destroy_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq);
+int mlx4_en_activate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq);
+void mlx4_en_deactivate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq);
+int mlx4_en_set_cq_moder(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq);
+int mlx4_en_arm_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq);
+
+void mlx4_en_poll_tx_cq(unsigned long data);
+void mlx4_en_tx_irq(struct mlx4_cq *mcq);
+int mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev);
+
+int mlx4_en_create_tx_ring(struct mlx4_en_priv *priv, struct mlx4_en_tx_ring *ring,
+                           u32 size, u16 stride);
+void mlx4_en_destroy_tx_ring(struct mlx4_en_priv *priv, struct mlx4_en_tx_ring *ring);
+int mlx4_en_activate_tx_ring(struct mlx4_en_priv *priv,
+                             struct mlx4_en_tx_ring *ring,
+                             int cq, int srqn);
+void mlx4_en_deactivate_tx_ring(struct mlx4_en_priv *priv,
+                                struct mlx4_en_tx_ring *ring);
+
+int mlx4_en_create_rx_ring(struct mlx4_en_priv *priv,
+                           struct mlx4_en_rx_ring *ring,
+                           u32 size, u16 stride);
+void mlx4_en_destroy_rx_ring(struct mlx4_en_priv *priv,
+                             struct mlx4_en_rx_ring *ring);
+int mlx4_en_activate_rx_rings(struct mlx4_en_priv *priv);
+void mlx4_en_deactivate_rx_ring(struct mlx4_en_priv *priv,
+                                struct mlx4_en_rx_ring *ring);
+int mlx4_en_process_rx_cq(struct net_device *dev,
+                          struct mlx4_en_cq *cq,
+                          int budget);
+int mlx4_en_poll_rx_cq(struct napi_struct *napi, int budget);
+void mlx4_en_fill_qp_context(struct mlx4_en_priv *priv, int size, int stride,
+                             int is_tx, int rss, int qpn, int cqn, int srqn,
+                             struct mlx4_qp_context *context);
+int mlx4_en_map_buffer(struct mlx4_buf *buf);
+void mlx4_en_unmap_buffer(struct mlx4_buf *buf);
+
+void mlx4_en_calc_rx_buf(struct net_device *dev);
+void mlx4_en_set_default_rss_map(struct mlx4_en_priv *priv,
+                                 struct mlx4_en_rss_map *rss_map,
+                                 int num_entries, int num_rings);
+void mlx4_en_set_prio_map(struct mlx4_en_priv *priv, u16 *prio_map, u32 ring_num);
+int mlx4_en_config_rss_steer(struct mlx4_en_priv *priv);
+void mlx4_en_release_rss_steer(struct mlx4_en_priv *priv);
+int mlx4_en_free_tx_buf(struct net_device *dev, struct mlx4_en_tx_ring *ring);
+void mlx4_en_rx_refill(struct work_struct *work);
+void mlx4_en_rx_irq(struct mlx4_cq *mcq);
+
+int mlx4_SET_MCAST_FLTR(struct mlx4_dev *dev, u8 port, u64 mac, u64 clear, u8 mode);
+int mlx4_SET_VLAN_FLTR(struct mlx4_dev *dev, u8 port, struct vlan_group *grp);
+int mlx4_SET_PORT_general(struct mlx4_dev *dev, u8 port, int mtu,
+                          u8 pptx, u8 pfctx, u8 pprx, u8 pfcrx);
+int mlx4_SET_PORT_qpn_calc(struct mlx4_dev *dev, u8 port, u32 base_qpn,
+                           u8 promisc);
+
+int mlx4_en_DUMP_ETH_STATS(struct mlx4_en_dev *mdev, u8 port, u8 reset);
+
+/*
+ * Globals
+ */
+extern const struct ethtool_ops mlx4_en_ethtool_ops;
+#endif
diff --git a/drivers/net/mlx4/mr.c b/drivers/net/mlx4/mr.c
index d1dd5b48dbd1..0caf74cae8bc 100644
--- a/drivers/net/mlx4/mr.c
+++ b/drivers/net/mlx4/mr.c
@@ -461,7 +461,7 @@ int mlx4_init_mr_table(struct mlx4_dev *dev)
         int err;
 
         err = mlx4_bitmap_init(&mr_table->mpt_bitmap, dev->caps.num_mpts,
-                               ~0, dev->caps.reserved_mrws);
+                               ~0, dev->caps.reserved_mrws, 0);
         if (err)
                 return err;
 
diff --git a/drivers/net/mlx4/pd.c b/drivers/net/mlx4/pd.c
index aa616892d09c..26d1a7a9e375 100644
--- a/drivers/net/mlx4/pd.c
+++ b/drivers/net/mlx4/pd.c
@@ -62,7 +62,7 @@ int mlx4_init_pd_table(struct mlx4_dev *dev)
         struct mlx4_priv *priv = mlx4_priv(dev);
 
         return mlx4_bitmap_init(&priv->pd_bitmap, dev->caps.num_pds,
-                                (1 << 24) - 1, dev->caps.reserved_pds);
+                                (1 << 24) - 1, dev->caps.reserved_pds, 0);
 }
 
 void mlx4_cleanup_pd_table(struct mlx4_dev *dev)
@@ -100,7 +100,7 @@ int mlx4_init_uar_table(struct mlx4_dev *dev)
 
         return mlx4_bitmap_init(&mlx4_priv(dev)->uar_table.bitmap,
                                 dev->caps.num_uars, dev->caps.num_uars - 1,
-                                max(128, dev->caps.reserved_uars));
+                                max(128, dev->caps.reserved_uars), 0);
 }
 
 void mlx4_cleanup_uar_table(struct mlx4_dev *dev)
diff --git a/drivers/net/mlx4/port.c b/drivers/net/mlx4/port.c
new file mode 100644
index 000000000000..e2fdab42c4ce
--- /dev/null
+++ b/drivers/net/mlx4/port.c
@@ -0,0 +1,282 @@
+/*
+ * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/errno.h>
+#include <linux/if_ether.h>
+
+#include <linux/mlx4/cmd.h>
+
+#include "mlx4.h"
+
+#define MLX4_MAC_VALID          (1ull << 63)
+#define MLX4_MAC_MASK           0xffffffffffffULL
+
+#define MLX4_VLAN_VALID         (1u << 31)
+#define MLX4_VLAN_MASK          0xfff
+
+void mlx4_init_mac_table(struct mlx4_dev *dev, struct mlx4_mac_table *table)
+{
+        int i;
+
+        mutex_init(&table->mutex);
+        for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
+                table->entries[i] = 0;
+                table->refs[i]   = 0;
+        }
+        table->max   = 1 << dev->caps.log_num_macs;
+        table->total = 0;
+}
+
+void mlx4_init_vlan_table(struct mlx4_dev *dev, struct mlx4_vlan_table *table)
+{
+        int i;
+
+        mutex_init(&table->mutex);
+        for (i = 0; i < MLX4_MAX_VLAN_NUM; i++) {
+                table->entries[i] = 0;
+                table->refs[i]   = 0;
+        }
+        table->max   = 1 << dev->caps.log_num_vlans;
+        table->total = 0;
+}
+
+static int mlx4_set_port_mac_table(struct mlx4_dev *dev, u8 port,
+                                   __be64 *entries)
+{
+        struct mlx4_cmd_mailbox *mailbox;
+        u32 in_mod;
+        int err;
+
+        mailbox = mlx4_alloc_cmd_mailbox(dev);
+        if (IS_ERR(mailbox))
+                return PTR_ERR(mailbox);
+
+        memcpy(mailbox->buf, entries, MLX4_MAC_TABLE_SIZE);
+
+        in_mod = MLX4_SET_PORT_MAC_TABLE << 8 | port;
+        err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
+                       MLX4_CMD_TIME_CLASS_B);
+
+        mlx4_free_cmd_mailbox(dev, mailbox);
+        return err;
+}
+
+int mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac, int *index)
+{
+        struct mlx4_mac_table *table = &mlx4_priv(dev)->port[port].mac_table;
+        int i, err = 0;
+        int free = -1;
+
+        mlx4_dbg(dev, "Registering MAC: 0x%llx\n", (unsigned long long) mac);
+        mutex_lock(&table->mutex);
+        for (i = 0; i < MLX4_MAX_MAC_NUM - 1; i++) {
+                if (free < 0 && !table->refs[i]) {
+                        free = i;
+                        continue;
+                }
+
+                if (mac == (MLX4_MAC_MASK & be64_to_cpu(table->entries[i]))) {
+                        /* MAC already registered, increase refernce count */
+                        *index = i;
+                        ++table->refs[i];
+                        goto out;
+                }
+        }
+        mlx4_dbg(dev, "Free MAC index is %d\n", free);
+
+        if (table->total == table->max) {
+                /* No free mac entries */
+                err = -ENOSPC;
+                goto out;
+        }
+
+        /* Register new MAC */
+        table->refs[free] = 1;
+        table->entries[free] = cpu_to_be64(mac | MLX4_MAC_VALID);
+
+        err = mlx4_set_port_mac_table(dev, port, table->entries);
+        if (unlikely(err)) {
+                mlx4_err(dev, "Failed adding MAC: 0x%llx\n", (unsigned long long) mac);
+                table->refs[free] = 0;
+                table->entries[free] = 0;
+                goto out;
+        }
+
+        *index = free;
+        ++table->total;
+out:
+        mutex_unlock(&table->mutex);
+        return err;
+}
+EXPORT_SYMBOL_GPL(mlx4_register_mac);
+
+void mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, int index)
+{
+        struct mlx4_mac_table *table = &mlx4_priv(dev)->port[port].mac_table;
+
+        mutex_lock(&table->mutex);
+        if (!table->refs[index]) {
+                mlx4_warn(dev, "No MAC entry for index %d\n", index);
+                goto out;
+        }
+        if (--table->refs[index]) {
+                mlx4_warn(dev, "Have more references for index %d,"
+                          "no need to modify MAC table\n", index);
+                goto out;
+        }
+        table->entries[index] = 0;
+        mlx4_set_port_mac_table(dev, port, table->entries);
+        --table->total;
+out:
+        mutex_unlock(&table->mutex);
+}
+EXPORT_SYMBOL_GPL(mlx4_unregister_mac);
+
+static int mlx4_set_port_vlan_table(struct mlx4_dev *dev, u8 port,
+                                    __be32 *entries)
+{
+        struct mlx4_cmd_mailbox *mailbox;
+        u32 in_mod;
+        int err;
+
+        mailbox = mlx4_alloc_cmd_mailbox(dev);
+        if (IS_ERR(mailbox))
+                return PTR_ERR(mailbox);
+
+        memcpy(mailbox->buf, entries, MLX4_VLAN_TABLE_SIZE);
+        in_mod = MLX4_SET_PORT_VLAN_TABLE << 8 | port;
+        err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
+                       MLX4_CMD_TIME_CLASS_B);
+
+        mlx4_free_cmd_mailbox(dev, mailbox);
+
+        return err;
+}
+
+int mlx4_register_vlan(struct mlx4_dev *dev, u8 port, u16 vlan, int *index)
+{
+        struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
+        int i, err = 0;
+        int free = -1;
+
+        mutex_lock(&table->mutex);
+        for (i = MLX4_VLAN_REGULAR; i < MLX4_MAX_VLAN_NUM; i++) {
+                if (free < 0 && (table->refs[i] == 0)) {
+                        free = i;
+                        continue;
+                }
+
+                if (table->refs[i] &&
+                    (vlan == (MLX4_VLAN_MASK &
+                              be32_to_cpu(table->entries[i])))) {
+                        /* Vlan already registered, increase refernce count */
+                        *index = i;
+                        ++table->refs[i];
+                        goto out;
+                }
+        }
+
+        if (table->total == table->max) {
+                /* No free vlan entries */
+                err = -ENOSPC;
+                goto out;
+        }
+
+        /* Register new MAC */
+        table->refs[free] = 1;
+        table->entries[free] = cpu_to_be32(vlan | MLX4_VLAN_VALID);
+
+        err = mlx4_set_port_vlan_table(dev, port, table->entries);
+        if (unlikely(err)) {
+                mlx4_warn(dev, "Failed adding vlan: %u\n", vlan);
+                table->refs[free] = 0;
+                table->entries[free] = 0;
+                goto out;
+        }
+
+        *index = free;
+        ++table->total;
+out:
+        mutex_unlock(&table->mutex);
+        return err;
+}
+EXPORT_SYMBOL_GPL(mlx4_register_vlan);
+
+void mlx4_unregister_vlan(struct mlx4_dev *dev, u8 port, int index)
+{
+        struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
+
+        if (index < MLX4_VLAN_REGULAR) {
+                mlx4_warn(dev, "Trying to free special vlan index %d\n", index);
+                return;
+        }
+
+        mutex_lock(&table->mutex);
+        if (!table->refs[index]) {
+                mlx4_warn(dev, "No vlan entry for index %d\n", index);
+                goto out;
+        }
+        if (--table->refs[index]) {
+                mlx4_dbg(dev, "Have more references for index %d,"
+                         "no need to modify vlan table\n", index);
+                goto out;
+        }
+        table->entries[index] = 0;
+        mlx4_set_port_vlan_table(dev, port, table->entries);
+        --table->total;
+out:
+        mutex_unlock(&table->mutex);
+}
+EXPORT_SYMBOL_GPL(mlx4_unregister_vlan);
+
+int mlx4_SET_PORT(struct mlx4_dev *dev, u8 port)
+{
+        struct mlx4_cmd_mailbox *mailbox;
+        int err;
+        u8 is_eth = dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
+
+        mailbox = mlx4_alloc_cmd_mailbox(dev);
+        if (IS_ERR(mailbox))
+                return PTR_ERR(mailbox);
+
+        memset(mailbox->buf, 0, 256);
+        if (is_eth) {
+                ((u8 *) mailbox->buf)[3] = 6;
+                ((__be16 *) mailbox->buf)[4] = cpu_to_be16(1 << 15);
+                ((__be16 *) mailbox->buf)[6] = cpu_to_be16(1 << 15);
+        }
+        err = mlx4_cmd(dev, mailbox->dma, port, is_eth, MLX4_CMD_SET_PORT,
+                       MLX4_CMD_TIME_CLASS_B);
+
+        mlx4_free_cmd_mailbox(dev, mailbox);
+        return err;
+}
diff --git a/drivers/net/mlx4/qp.c b/drivers/net/mlx4/qp.c
index c49a86044bf7..1c565ef8d179 100644
--- a/drivers/net/mlx4/qp.c
+++ b/drivers/net/mlx4/qp.c
@@ -147,19 +147,42 @@ int mlx4_qp_modify(struct mlx4_dev *dev, struct mlx4_mtt *mtt,
 }
 EXPORT_SYMBOL_GPL(mlx4_qp_modify);
 
-int mlx4_qp_alloc(struct mlx4_dev *dev, int sqpn, struct mlx4_qp *qp)
+int mlx4_qp_reserve_range(struct mlx4_dev *dev, int cnt, int align, int *base)
+{
+        struct mlx4_priv *priv = mlx4_priv(dev);
+        struct mlx4_qp_table *qp_table = &priv->qp_table;
+        int qpn;
+
+        qpn = mlx4_bitmap_alloc_range(&qp_table->bitmap, cnt, align);
+        if (qpn == -1)
+                return -ENOMEM;
+
+        *base = qpn;
+        return 0;
+}
+EXPORT_SYMBOL_GPL(mlx4_qp_reserve_range);
+
+void mlx4_qp_release_range(struct mlx4_dev *dev, int base_qpn, int cnt)
+{
+        struct mlx4_priv *priv = mlx4_priv(dev);
+        struct mlx4_qp_table *qp_table = &priv->qp_table;
+        if (base_qpn < dev->caps.sqp_start + 8)
+                return;
+
+        mlx4_bitmap_free_range(&qp_table->bitmap, base_qpn, cnt);
+}
+EXPORT_SYMBOL_GPL(mlx4_qp_release_range);
+
+int mlx4_qp_alloc(struct mlx4_dev *dev, int qpn, struct mlx4_qp *qp)
 {
         struct mlx4_priv *priv = mlx4_priv(dev);
         struct mlx4_qp_table *qp_table = &priv->qp_table;
         int err;
 
-        if (sqpn)
-                qp->qpn = sqpn;
-        else {
-                qp->qpn = mlx4_bitmap_alloc(&qp_table->bitmap);
-                if (qp->qpn == -1)
-                        return -ENOMEM;
-        }
+        if (!qpn)
+                return -EINVAL;
+
+        qp->qpn = qpn;
 
         err = mlx4_table_get(dev, &qp_table->qp_table, qp->qpn);
         if (err)
@@ -208,9 +231,6 @@ err_put_qp:
         mlx4_table_put(dev, &qp_table->qp_table, qp->qpn);
 
 err_out:
-        if (!sqpn)
-                mlx4_bitmap_free(&qp_table->bitmap, qp->qpn);
-
         return err;
 }
 EXPORT_SYMBOL_GPL(mlx4_qp_alloc);
@@ -239,9 +259,6 @@ void mlx4_qp_free(struct mlx4_dev *dev, struct mlx4_qp *qp)
         mlx4_table_put(dev, &qp_table->altc_table, qp->qpn);
         mlx4_table_put(dev, &qp_table->auxc_table, qp->qpn);
         mlx4_table_put(dev, &qp_table->qp_table, qp->qpn);
-
-        if (qp->qpn >= dev->caps.sqp_start + 8)
-                mlx4_bitmap_free(&qp_table->bitmap, qp->qpn);
 }
 EXPORT_SYMBOL_GPL(mlx4_qp_free);
 
@@ -255,6 +272,7 @@ int mlx4_init_qp_table(struct mlx4_dev *dev)
 {
         struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table;
         int err;
+        int reserved_from_top = 0;
 
         spin_lock_init(&qp_table->lock);
         INIT_RADIX_TREE(&dev->qp_table_tree, GFP_ATOMIC);
@@ -264,9 +282,40 @@ int mlx4_init_qp_table(struct mlx4_dev *dev)
          * block of special QPs must be aligned to a multiple of 8, so
          * round up.
          */
-        dev->caps.sqp_start = ALIGN(dev->caps.reserved_qps, 8);
+        dev->caps.sqp_start =
+                ALIGN(dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW], 8);
+
+        {
+                int sort[MLX4_NUM_QP_REGION];
+                int i, j, tmp;
+                int last_base = dev->caps.num_qps;
+
+                for (i = 1; i < MLX4_NUM_QP_REGION; ++i)
+                        sort[i] = i;
+
+                for (i = MLX4_NUM_QP_REGION; i > 0; --i) {
+                        for (j = 2; j < i; ++j) {
+                                if (dev->caps.reserved_qps_cnt[sort[j]] >
+                                    dev->caps.reserved_qps_cnt[sort[j - 1]]) {
+                                        tmp             = sort[j];
+                                        sort[j]         = sort[j - 1];
+                                        sort[j - 1]     = tmp;
+                                }
+                        }
+                }
+
+                for (i = 1; i < MLX4_NUM_QP_REGION; ++i) {
+                        last_base -= dev->caps.reserved_qps_cnt[sort[i]];
+                        dev->caps.reserved_qps_base[sort[i]] = last_base;
+                        reserved_from_top +=
+                                dev->caps.reserved_qps_cnt[sort[i]];
+                }
+
+        }
+
         err = mlx4_bitmap_init(&qp_table->bitmap, dev->caps.num_qps,
-                               (1 << 24) - 1, dev->caps.sqp_start + 8);
+                               (1 << 23) - 1, dev->caps.sqp_start + 8,
+                               reserved_from_top);
         if (err)
                 return err;
 
diff --git a/drivers/net/mlx4/srq.c b/drivers/net/mlx4/srq.c
index 533eb6db24b3..fe9f218691f5 100644
--- a/drivers/net/mlx4/srq.c
+++ b/drivers/net/mlx4/srq.c
@@ -245,7 +245,7 @@ int mlx4_init_srq_table(struct mlx4_dev *dev)
         INIT_RADIX_TREE(&srq_table->tree, GFP_ATOMIC);
 
         err = mlx4_bitmap_init(&srq_table->bitmap, dev->caps.num_srqs,
-                               dev->caps.num_srqs - 1, dev->caps.reserved_srqs);
+                               dev->caps.num_srqs - 1, dev->caps.reserved_srqs, 0);
         if (err)
                 return err;
 
diff --git a/drivers/net/xtsonic.c b/drivers/net/xtsonic.c
new file mode 100644
index 000000000000..da42aa06a3ba
--- /dev/null
+++ b/drivers/net/xtsonic.c
@@ -0,0 +1,319 @@
+/*
+ * xtsonic.c
+ *
+ * (C) 2001 - 2007 Tensilica Inc.
+ *      Kevin Chea <kchea@yahoo.com>
+ *      Marc Gauthier <marc@linux-xtensa.org>
+ *      Chris Zankel <chris@zankel.net>
+ *
+ * (C) 1996,1998 by Thomas Bogendoerfer (tsbogend@alpha.franken.de)
+ *
+ * This driver is based on work from Andreas Busse, but most of
+ * the code is rewritten.
+ *
+ * (C) 1995 by Andreas Busse (andy@waldorf-gmbh.de)
+ *
+ * A driver for the onboard Sonic ethernet controller on the XT2000.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/in.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+
+#include <asm/io.h>
+#include <asm/pgtable.h>
+#include <asm/dma.h>
+
+static char xtsonic_string[] = "xtsonic";
+
+extern unsigned xtboard_nvram_valid(void);
+extern void xtboard_get_ether_addr(unsigned char *buf);
+
+#include "sonic.h"
+
+/*
+ * According to the documentation for the Sonic ethernet controller,
+ * EOBC should be 760 words (1520 bytes) for 32-bit applications, and,
+ * as such, 2 words less than the buffer size. The value for RBSIZE
+ * defined in sonic.h, however is only 1520.
+ *
+ * (Note that in 16-bit configurations, EOBC is 759 words (1518 bytes) and
+ * RBSIZE 1520 bytes)
+ */
+#undef SONIC_RBSIZE
+#define SONIC_RBSIZE    1524
+
+/*
+ * The chip provides 256 byte register space.
+ */
+#define SONIC_MEM_SIZE  0x100
+
+/*
+ * Macros to access SONIC registers
+ */
+#define SONIC_READ(reg) \
+        (0xffff & *((volatile unsigned int *)dev->base_addr+reg))
+
+#define SONIC_WRITE(reg,val) \
+        *((volatile unsigned int *)dev->base_addr+reg) = val
+
+
+/* Use 0 for production, 1 for verification, and >2 for debug */
+#ifdef SONIC_DEBUG
+static unsigned int sonic_debug = SONIC_DEBUG;
+#else
+static unsigned int sonic_debug = 1;
+#endif
+
+/*
+ * We cannot use station (ethernet) address prefixes to detect the
+ * sonic controller since these are board manufacturer depended.
+ * So we check for known Silicon Revision IDs instead.
+ */
+static unsigned short known_revisions[] =
+{
+        0x101,                  /* SONIC 83934 */
+        0xffff                  /* end of list */
+};
+
+static int xtsonic_open(struct net_device *dev)
+{
+        if (request_irq(dev->irq,&sonic_interrupt,IRQF_DISABLED,"sonic",dev)) {
+                printk(KERN_ERR "%s: unable to get IRQ %d.\n",
+                       dev->name, dev->irq);
+                return -EAGAIN;
+        }
+        return sonic_open(dev);
+}
+
+static int xtsonic_close(struct net_device *dev)
+{
+        int err;
+        err = sonic_close(dev);
+        free_irq(dev->irq, dev);
+        return err;
+}
+
+static int __init sonic_probe1(struct net_device *dev)
+{
+        static unsigned version_printed = 0;
+        unsigned int silicon_revision;
+        struct sonic_local *lp = netdev_priv(dev);
+        unsigned int base_addr = dev->base_addr;
+        int i;
+        int err = 0;
+
+        if (!request_mem_region(base_addr, 0x100, xtsonic_string))
+                return -EBUSY;
+
+        /*
+         * get the Silicon Revision ID. If this is one of the known
+         * one assume that we found a SONIC ethernet controller at
+         * the expected location.
+         */
+        silicon_revision = SONIC_READ(SONIC_SR);
+        if (sonic_debug > 1)
+                printk("SONIC Silicon Revision = 0x%04x\n",silicon_revision);
+
+        i = 0;
+        while ((known_revisions[i] != 0xffff) &&
+                        (known_revisions[i] != silicon_revision))
+                i++;
+
+        if (known_revisions[i] == 0xffff) {
+                printk("SONIC ethernet controller not found (0x%4x)\n",
+                                silicon_revision);
+                return -ENODEV;
+        }
+
+        if (sonic_debug  &&  version_printed++ == 0)
+                printk(version);
+
+        /*
+         * Put the sonic into software reset, then retrieve ethernet address.
+         * Note: we are assuming that the boot-loader has initialized the cam.
+         */
+        SONIC_WRITE(SONIC_CMD,SONIC_CR_RST);
+        SONIC_WRITE(SONIC_DCR,
+                    SONIC_DCR_WC0|SONIC_DCR_DW|SONIC_DCR_LBR|SONIC_DCR_SBUS);
+        SONIC_WRITE(SONIC_CEP,0);
+        SONIC_WRITE(SONIC_IMR,0);
+
+        SONIC_WRITE(SONIC_CMD,SONIC_CR_RST);
+        SONIC_WRITE(SONIC_CEP,0);
+
+        for (i=0; i<3; i++) {
+                unsigned int val = SONIC_READ(SONIC_CAP0-i);
+                dev->dev_addr[i*2] = val;
+                dev->dev_addr[i*2+1] = val >> 8;
+        }
+
+        /* Initialize the device structure. */
+
+        lp->dma_bitmode = SONIC_BITMODE32;
+
+        /*
+         *  Allocate local private descriptor areas in uncached space.
+         *  The entire structure must be located within the same 64kb segment.
+         *  A simple way to ensure this is to allocate twice the
+         *  size of the structure -- given that the structure is
+         *  much less than 64 kB, at least one of the halves of
+         *  the allocated area will be contained entirely in 64 kB.
+         *  We also allocate extra space for a pointer to allow freeing
+         *  this structure later on (in xtsonic_cleanup_module()).
+         */
+        lp->descriptors =
+                dma_alloc_coherent(lp->device,
+                        SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
+                        &lp->descriptors_laddr, GFP_KERNEL);
+
+        if (lp->descriptors == NULL) {
+                printk(KERN_ERR "%s: couldn't alloc DMA memory for "
+                                " descriptors.\n", lp->device->bus_id);
+                goto out;
+        }
+
+        lp->cda = lp->descriptors;
+        lp->tda = lp->cda + (SIZEOF_SONIC_CDA
+                             * SONIC_BUS_SCALE(lp->dma_bitmode));
+        lp->rda = lp->tda + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
+                             * SONIC_BUS_SCALE(lp->dma_bitmode));
+        lp->rra = lp->rda + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
+                             * SONIC_BUS_SCALE(lp->dma_bitmode));
+
+        /* get the virtual dma address */
+
+        lp->cda_laddr = lp->descriptors_laddr;
+        lp->tda_laddr = lp->cda_laddr + (SIZEOF_SONIC_CDA
+                                         * SONIC_BUS_SCALE(lp->dma_bitmode));
+        lp->rda_laddr = lp->tda_laddr + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
+                                         * SONIC_BUS_SCALE(lp->dma_bitmode));
+        lp->rra_laddr = lp->rda_laddr + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
+                                         * SONIC_BUS_SCALE(lp->dma_bitmode));
+
+        dev->open = xtsonic_open;
+        dev->stop = xtsonic_close;
+        dev->hard_start_xmit    = sonic_send_packet;
+        dev->get_stats          = sonic_get_stats;
+        dev->set_multicast_list = &sonic_multicast_list;
+        dev->tx_timeout         = sonic_tx_timeout;
+        dev->watchdog_timeo     = TX_TIMEOUT;
+
+        /*
+         * clear tally counter
+         */
+        SONIC_WRITE(SONIC_CRCT,0xffff);
+        SONIC_WRITE(SONIC_FAET,0xffff);
+        SONIC_WRITE(SONIC_MPT,0xffff);
+
+        return 0;
+out:
+        release_region(dev->base_addr, SONIC_MEM_SIZE);
+        return err;
+}
+
+
+/*
+ * Probe for a SONIC ethernet controller on an XT2000 board.
+ * Actually probing is superfluous but we're paranoid.
+ */
+
+int __init xtsonic_probe(struct platform_device *pdev)
+{
+        struct net_device *dev;
+        struct sonic_local *lp;
+        struct resource *resmem, *resirq;
+        int err = 0;
+
+        DECLARE_MAC_BUF(mac);
+
+        if ((resmem = platform_get_resource(pdev, IORESOURCE_MEM, 0)) == NULL)
+                return -ENODEV;
+
+        if ((resirq = platform_get_resource(pdev, IORESOURCE_IRQ, 0)) == NULL)
+                return -ENODEV;
+
+        if ((dev = alloc_etherdev(sizeof(struct sonic_local))) == NULL)
+                return -ENOMEM;
+
+        lp = netdev_priv(dev);
+        lp->device = &pdev->dev;
+        SET_NETDEV_DEV(dev, &pdev->dev);
+        netdev_boot_setup_check(dev);
+
+        dev->base_addr = resmem->start;
+        dev->irq = resirq->start;
+
+        if ((err = sonic_probe1(dev)))
+                goto out;
+        if ((err = register_netdev(dev)))
+                goto out1;
+
+        printk("%s: SONIC ethernet @%08lx, MAC %s, IRQ %d\n", dev->name,
+               dev->base_addr, print_mac(mac, dev->dev_addr), dev->irq);
+
+        return 0;
+
+out1:
+        release_region(dev->base_addr, SONIC_MEM_SIZE);
+out:
+        free_netdev(dev);
+
+        return err;
+}
+
+MODULE_DESCRIPTION("Xtensa XT2000 SONIC ethernet driver");
+module_param(sonic_debug, int, 0);
+MODULE_PARM_DESC(sonic_debug, "xtsonic debug level (1-4)");
+
+#include "sonic.c"
+
+static int __devexit xtsonic_device_remove (struct platform_device *pdev)
+{
+        struct net_device *dev = platform_get_drvdata(pdev);
+        struct sonic_local *lp = netdev_priv(dev);
+
+        unregister_netdev(dev);
+        dma_free_coherent(lp->device,
+                          SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
+                          lp->descriptors, lp->descriptors_laddr);
+        release_region (dev->base_addr, SONIC_MEM_SIZE);
+        free_netdev(dev);
+
+        return 0;
+}
+
+static struct platform_driver xtsonic_driver = {
+        .probe = xtsonic_probe,
+        .remove = __devexit_p(xtsonic_device_remove),
+        .driver = {
+                .name = xtsonic_string,
+        },
+};
+
+static int __init xtsonic_init(void)
+{
+        return platform_driver_register(&xtsonic_driver);
+}
+
+static void __exit xtsonic_cleanup(void)
+{
+        platform_driver_unregister(&xtsonic_driver);
+}
+
+module_init(xtsonic_init);
+module_exit(xtsonic_cleanup);
diff --git a/drivers/of/of_i2c.c b/drivers/of/of_i2c.c
index 6a98dc8aa30b..24bbef777c19 100644
--- a/drivers/of/of_i2c.c
+++ b/drivers/of/of_i2c.c
@@ -41,7 +41,7 @@ void of_register_i2c_devices(struct i2c_adapter *adap,
 
                 info.addr = *addr;
 
-                request_module(info.type);
+                request_module("%s", info.type);
 
                 result = i2c_new_device(adap, &info);
                 if (result == NULL) {
diff --git a/drivers/of/of_spi.c b/drivers/of/of_spi.c
index b01eec026f68..bed0ed6dcdc1 100644
--- a/drivers/of/of_spi.c
+++ b/drivers/of/of_spi.c
@@ -61,6 +61,8 @@ void of_register_spi_devices(struct spi_master *master, struct device_node *np)
                         spi->mode |= SPI_CPHA;
                 if (of_find_property(nc, "spi-cpol", NULL))
                         spi->mode |= SPI_CPOL;
+                if (of_find_property(nc, "spi-cs-high", NULL))
+                        spi->mode |= SPI_CS_HIGH;
 
                 /* Device speed */
                 prop = of_get_property(nc, "spi-max-frequency", &len);
diff --git a/drivers/oprofile/buffer_sync.c b/drivers/oprofile/buffer_sync.c
index ed982273fb8b..37681700b61a 100644
--- a/drivers/oprofile/buffer_sync.c
+++ b/drivers/oprofile/buffer_sync.c
@@ -628,3 +628,27 @@ void sync_buffer(int cpu)
 
         mutex_unlock(&buffer_mutex);
 }
+
+/* The function can be used to add a buffer worth of data directly to
+ * the kernel buffer. The buffer is assumed to be a circular buffer.
+ * Take the entries from index start and end at index end, wrapping
+ * at max_entries.
+ */
+void oprofile_put_buff(unsigned long *buf, unsigned int start,
+                       unsigned int stop, unsigned int max)
+{
+        int i;
+
+        i = start;
+
+        mutex_lock(&buffer_mutex);
+        while (i != stop) {
+                add_event_entry(buf[i++]);
+
+                if (i >= max)
+                        i = 0;
+        }
+
+        mutex_unlock(&buffer_mutex);
+}
+
diff --git a/drivers/oprofile/cpu_buffer.c b/drivers/oprofile/cpu_buffer.c
index e1bd5a937f6c..7ba39fe20a8a 100644
--- a/drivers/oprofile/cpu_buffer.c
+++ b/drivers/oprofile/cpu_buffer.c
@@ -38,13 +38,26 @@ static int work_enabled;
 void free_cpu_buffers(void)
 {
         int i;
- 
+
         for_each_online_cpu(i) {
                 vfree(per_cpu(cpu_buffer, i).buffer);
                 per_cpu(cpu_buffer, i).buffer = NULL;
         }
 }
 
+unsigned long oprofile_get_cpu_buffer_size(void)
+{
+        return fs_cpu_buffer_size;
+}
+
+void oprofile_cpu_buffer_inc_smpl_lost(void)
+{
+        struct oprofile_cpu_buffer *cpu_buf
+                = &__get_cpu_var(cpu_buffer);
+
+        cpu_buf->sample_lost_overflow++;
+}
+
 int alloc_cpu_buffers(void)
 {
         int i;
diff --git a/drivers/oprofile/event_buffer.h b/drivers/oprofile/event_buffer.h
index 5076ed1ebd8f..84bf324c5771 100644
--- a/drivers/oprofile/event_buffer.h
+++ b/drivers/oprofile/event_buffer.h
@@ -17,6 +17,13 @@ int alloc_event_buffer(void);
 
 void free_event_buffer(void);
  
+/**
+ * Add data to the event buffer.
+ * The data passed is free-form, but typically consists of
+ * file offsets, dcookies, context information, and ESCAPE codes.
+ */
+void add_event_entry(unsigned long data);
+
 /* wake up the process sleeping on the event file */
 void wake_up_buffer_waiter(void);
 
diff --git a/drivers/parport/parport_pc.c b/drivers/parport/parport_pc.c
index 8a846adf1dcf..96f3bdf0ec4b 100644
--- a/drivers/parport/parport_pc.c
+++ b/drivers/parport/parport_pc.c
@@ -2791,6 +2791,7 @@ enum parport_pc_pci_cards {
         oxsemi_952,
         oxsemi_954,
         oxsemi_840,
+        oxsemi_pcie_pport,
         aks_0100,
         mobility_pp,
         netmos_9705,
@@ -2868,6 +2869,7 @@ static struct parport_pc_pci {
         /* oxsemi_952 */                { 1, { { 0, 1 }, } },
         /* oxsemi_954 */                { 1, { { 0, -1 }, } },
         /* oxsemi_840 */                { 1, { { 0, 1 }, } },
+        /* oxsemi_pcie_pport */         { 1, { { 0, 1 }, } },
         /* aks_0100 */                  { 1, { { 0, -1 }, } },
         /* mobility_pp */               { 1, { { 0, 1 }, } },
         /* netmos_9705 */               { 1, { { 0, -1 }, } }, /* untested */
@@ -2928,7 +2930,6 @@ static const struct pci_device_id parport_pc_pci_tbl[] = {
         { 0x1409, 0x7268, 0x1409, 0x0103, 0, 0, timedia_4008a },
         { 0x1409, 0x7268, 0x1409, 0x0104, 0, 0, timedia_4018 },
         { 0x1409, 0x7268, 0x1409, 0x9018, 0, 0, timedia_9018a },
-        { 0x14f2, 0x0121, PCI_ANY_ID, PCI_ANY_ID, 0, 0, mobility_pp },
         { PCI_VENDOR_ID_SYBA, PCI_DEVICE_ID_SYBA_2P_EPP,
           PCI_ANY_ID, PCI_ANY_ID, 0, 0, syba_2p_epp },
         { PCI_VENDOR_ID_SYBA, PCI_DEVICE_ID_SYBA_1P_ECP,
@@ -2946,8 +2947,25 @@ static const struct pci_device_id parport_pc_pci_tbl[] = {
           PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_954 },
         { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_12PCI840,
           PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_840 },
+        { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_PCIe840,
+          PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_pcie_pport },
+        { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_PCIe840_G,
+          PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_pcie_pport },
+        { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_PCIe952_0,
+          PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_pcie_pport },
+        { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_PCIe952_0_G,
+          PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_pcie_pport },
+        { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_PCIe952_1,
+          PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_pcie_pport },
+        { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_PCIe952_1_G,
+          PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_pcie_pport },
+        { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_PCIe952_1_U,
+          PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_pcie_pport },
+        { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_PCIe952_1_GU,
+          PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_pcie_pport },
         { PCI_VENDOR_ID_AKS, PCI_DEVICE_ID_AKS_ALADDINCARD,
           PCI_ANY_ID, PCI_ANY_ID, 0, 0, aks_0100 },
+        { 0x14f2, 0x0121, PCI_ANY_ID, PCI_ANY_ID, 0, 0, mobility_pp },
         /* NetMos communication controllers */
         { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9705,
           PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9705 },
diff --git a/drivers/pci/dmar.c b/drivers/pci/dmar.c
index 8b29c307f1a1..691b3adeb870 100644
--- a/drivers/pci/dmar.c
+++ b/drivers/pci/dmar.c
@@ -188,8 +188,7 @@ dmar_parse_one_drhd(struct acpi_dmar_header *header)
         return 0;
 }
 
-static int __init
-dmar_parse_dev(struct dmar_drhd_unit *dmaru)
+static int __init dmar_parse_dev(struct dmar_drhd_unit *dmaru)
 {
         struct acpi_dmar_hardware_unit *drhd;
         static int include_all;
@@ -277,14 +276,15 @@ dmar_table_print_dmar_entry(struct acpi_dmar_header *header)
                 drhd = (struct acpi_dmar_hardware_unit *)header;
                 printk (KERN_INFO PREFIX
                         "DRHD (flags: 0x%08x)base: 0x%016Lx\n",
-                        drhd->flags, drhd->address);
+                        drhd->flags, (unsigned long long)drhd->address);
                 break;
         case ACPI_DMAR_TYPE_RESERVED_MEMORY:
                 rmrr = (struct acpi_dmar_reserved_memory *)header;
 
                 printk (KERN_INFO PREFIX
                         "RMRR base: 0x%016Lx end: 0x%016Lx\n",
-                        rmrr->base_address, rmrr->end_address);
+                        (unsigned long long)rmrr->base_address,
+                        (unsigned long long)rmrr->end_address);
                 break;
         }
 }
@@ -328,7 +328,7 @@ parse_dmar_table(void)
         if (!dmar)
                 return -ENODEV;
 
-        if (dmar->width < PAGE_SHIFT_4K - 1) {
+        if (dmar->width < PAGE_SHIFT - 1) {
                 printk(KERN_WARNING PREFIX "Invalid DMAR haw\n");
                 return -EINVAL;
         }
@@ -460,8 +460,8 @@ void __init detect_intel_iommu(void)
 
         ret = dmar_table_detect();
 
-#ifdef CONFIG_DMAR
         {
+#ifdef CONFIG_INTR_REMAP
                 struct acpi_table_dmar *dmar;
                 /*
                  * for now we will disable dma-remapping when interrupt
@@ -470,29 +470,17 @@ void __init detect_intel_iommu(void)
                  * is added, we will not need this any more.
                  */
                 dmar = (struct acpi_table_dmar *) dmar_tbl;
-                if (ret && cpu_has_x2apic && dmar->flags & 0x1) {
+                if (ret && cpu_has_x2apic && dmar->flags & 0x1)
                         printk(KERN_INFO
                                "Queued invalidation will be enabled to support "
                                "x2apic and Intr-remapping.\n");
-                        printk(KERN_INFO
-                               "Disabling IOMMU detection, because of missing "
-                               "queued invalidation support for IOTLB "
-                               "invalidation\n");
-                        printk(KERN_INFO
-                               "Use \"nox2apic\", if you want to use Intel "
-                               " IOMMU for DMA-remapping and don't care about "
-                               " x2apic support\n");
-
-                        dmar_disabled = 1;
-                        goto end;
-                }
-
+#endif
+#ifdef CONFIG_DMAR
                 if (ret && !no_iommu && !iommu_detected && !swiotlb &&
                     !dmar_disabled)
                         iommu_detected = 1;
-        }
-end:
 #endif
+        }
         dmar_tbl = NULL;
 }
 
@@ -510,7 +498,7 @@ int alloc_iommu(struct dmar_drhd_unit *drhd)
 
         iommu->seq_id = iommu_allocated++;
 
-        iommu->reg = ioremap(drhd->reg_base_addr, PAGE_SIZE_4K);
+        iommu->reg = ioremap(drhd->reg_base_addr, VTD_PAGE_SIZE);
         if (!iommu->reg) {
                 printk(KERN_ERR "IOMMU: can't map the region\n");
                 goto error;
@@ -521,8 +509,8 @@ int alloc_iommu(struct dmar_drhd_unit *drhd)
         /* the registers might be more than one page */
         map_size = max_t(int, ecap_max_iotlb_offset(iommu->ecap),
                 cap_max_fault_reg_offset(iommu->cap));
-        map_size = PAGE_ALIGN_4K(map_size);
-        if (map_size > PAGE_SIZE_4K) {
+        map_size = VTD_PAGE_ALIGN(map_size);
+        if (map_size > VTD_PAGE_SIZE) {
                 iounmap(iommu->reg);
                 iommu->reg = ioremap(drhd->reg_base_addr, map_size);
                 if (!iommu->reg) {
@@ -533,8 +521,10 @@ int alloc_iommu(struct dmar_drhd_unit *drhd)
 
         ver = readl(iommu->reg + DMAR_VER_REG);
         pr_debug("IOMMU %llx: ver %d:%d cap %llx ecap %llx\n",
-                drhd->reg_base_addr, DMAR_VER_MAJOR(ver), DMAR_VER_MINOR(ver),
-                iommu->cap, iommu->ecap);
+                (unsigned long long)drhd->reg_base_addr,
+                DMAR_VER_MAJOR(ver), DMAR_VER_MINOR(ver),
+                (unsigned long long)iommu->cap,
+                (unsigned long long)iommu->ecap);
 
         spin_lock_init(&iommu->register_lock);
 
@@ -587,11 +577,11 @@ void qi_submit_sync(struct qi_desc *desc, struct intel_iommu *iommu)
 
         hw = qi->desc;
 
-        spin_lock(&qi->q_lock);
+        spin_lock_irqsave(&qi->q_lock, flags);
         while (qi->free_cnt < 3) {
-                spin_unlock(&qi->q_lock);
+                spin_unlock_irqrestore(&qi->q_lock, flags);
                 cpu_relax();
-                spin_lock(&qi->q_lock);
+                spin_lock_irqsave(&qi->q_lock, flags);
         }
 
         index = qi->free_head;
@@ -612,15 +602,22 @@ void qi_submit_sync(struct qi_desc *desc, struct intel_iommu *iommu)
         qi->free_head = (qi->free_head + 2) % QI_LENGTH;
         qi->free_cnt -= 2;
 
-        spin_lock_irqsave(&iommu->register_lock, flags);
+        spin_lock(&iommu->register_lock);
         /*
          * update the HW tail register indicating the presence of
          * new descriptors.
          */
         writel(qi->free_head << 4, iommu->reg + DMAR_IQT_REG);
-        spin_unlock_irqrestore(&iommu->register_lock, flags);
+        spin_unlock(&iommu->register_lock);
 
         while (qi->desc_status[wait_index] != QI_DONE) {
+                /*
+                 * We will leave the interrupts disabled, to prevent interrupt
+                 * context to queue another cmd while a cmd is already submitted
+                 * and waiting for completion on this cpu. This is to avoid
+                 * a deadlock where the interrupt context can wait indefinitely
+                 * for free slots in the queue.
+                 */
                 spin_unlock(&qi->q_lock);
                 cpu_relax();
                 spin_lock(&qi->q_lock);
@@ -629,7 +626,7 @@ void qi_submit_sync(struct qi_desc *desc, struct intel_iommu *iommu)
         qi->desc_status[index] = QI_DONE;
 
         reclaim_free_desc(qi);
-        spin_unlock(&qi->q_lock);
+        spin_unlock_irqrestore(&qi->q_lock, flags);
 }
 
 /*
@@ -645,6 +642,62 @@ void qi_global_iec(struct intel_iommu *iommu)
         qi_submit_sync(&desc, iommu);
 }
 
+int qi_flush_context(struct intel_iommu *iommu, u16 did, u16 sid, u8 fm,
+                     u64 type, int non_present_entry_flush)
+{
+
+        struct qi_desc desc;
+
+        if (non_present_entry_flush) {
+                if (!cap_caching_mode(iommu->cap))
+                        return 1;
+                else
+                        did = 0;
+        }
+
+        desc.low = QI_CC_FM(fm) | QI_CC_SID(sid) | QI_CC_DID(did)
+                        | QI_CC_GRAN(type) | QI_CC_TYPE;
+        desc.high = 0;
+
+        qi_submit_sync(&desc, iommu);
+
+        return 0;
+
+}
+
+int qi_flush_iotlb(struct intel_iommu *iommu, u16 did, u64 addr,
+                   unsigned int size_order, u64 type,
+                   int non_present_entry_flush)
+{
+        u8 dw = 0, dr = 0;
+
+        struct qi_desc desc;
+        int ih = 0;
+
+        if (non_present_entry_flush) {
+                if (!cap_caching_mode(iommu->cap))
+                        return 1;
+                else
+                        did = 0;
+        }
+
+        if (cap_write_drain(iommu->cap))
+                dw = 1;
+
+        if (cap_read_drain(iommu->cap))
+                dr = 1;
+
+        desc.low = QI_IOTLB_DID(did) | QI_IOTLB_DR(dr) | QI_IOTLB_DW(dw)
+                | QI_IOTLB_GRAN(type) | QI_IOTLB_TYPE;
+        desc.high = QI_IOTLB_ADDR(addr) | QI_IOTLB_IH(ih)
+                | QI_IOTLB_AM(size_order);
+
+        qi_submit_sync(&desc, iommu);
+
+        return 0;
+
+}
+
 /*
  * Enable Queued Invalidation interface. This is a must to support
  * interrupt-remapping. Also used by DMA-remapping, which replaces
diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index 8b51e10b7783..a2692724b68f 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -18,6 +18,7 @@
  * Author: Ashok Raj <ashok.raj@intel.com>
  * Author: Shaohua Li <shaohua.li@intel.com>
  * Author: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
+ * Author: Fenghua Yu <fenghua.yu@intel.com>
  */
 
 #include <linux/init.h>
@@ -35,11 +36,13 @@
 #include <linux/timer.h>
 #include <linux/iova.h>
 #include <linux/intel-iommu.h>
-#include <asm/proto.h> /* force_iommu in this header in x86-64*/
 #include <asm/cacheflush.h>
 #include <asm/iommu.h>
 #include "pci.h"
 
+#define ROOT_SIZE               VTD_PAGE_SIZE
+#define CONTEXT_SIZE            VTD_PAGE_SIZE
+
 #define IS_GFX_DEVICE(pdev) ((pdev->class >> 16) == PCI_BASE_CLASS_DISPLAY)
 #define IS_ISA_DEVICE(pdev) ((pdev->class >> 8) == PCI_CLASS_BRIDGE_ISA)
 
@@ -199,7 +202,7 @@ static struct context_entry * device_to_context_entry(struct intel_iommu *iommu,
                         spin_unlock_irqrestore(&iommu->lock, flags);
                         return NULL;
                 }
-                __iommu_flush_cache(iommu, (void *)context, PAGE_SIZE_4K);
+                __iommu_flush_cache(iommu, (void *)context, CONTEXT_SIZE);
                 phy_addr = virt_to_phys((void *)context);
                 set_root_value(root, phy_addr);
                 set_root_present(root);
@@ -345,7 +348,7 @@ static struct dma_pte * addr_to_dma_pte(struct dmar_domain *domain, u64 addr)
                                 return NULL;
                         }
                         __iommu_flush_cache(domain->iommu, tmp_page,
-                                        PAGE_SIZE_4K);
+                                        PAGE_SIZE);
                         dma_set_pte_addr(*pte, virt_to_phys(tmp_page));
                         /*
                          * high level table always sets r/w, last level page
@@ -408,13 +411,13 @@ static void dma_pte_clear_range(struct dmar_domain *domain, u64 start, u64 end)
         start &= (((u64)1) << addr_width) - 1;
         end &= (((u64)1) << addr_width) - 1;
         /* in case it's partial page */
-        start = PAGE_ALIGN_4K(start);
-        end &= PAGE_MASK_4K;
+        start = PAGE_ALIGN(start);
+        end &= PAGE_MASK;
 
         /* we don't need lock here, nobody else touches the iova range */
         while (start < end) {
                 dma_pte_clear_one(domain, start);
-                start += PAGE_SIZE_4K;
+                start += VTD_PAGE_SIZE;
         }
 }
 
@@ -468,7 +471,7 @@ static int iommu_alloc_root_entry(struct intel_iommu *iommu)
         if (!root)
                 return -ENOMEM;
 
-        __iommu_flush_cache(iommu, root, PAGE_SIZE_4K);
+        __iommu_flush_cache(iommu, root, ROOT_SIZE);
 
         spin_lock_irqsave(&iommu->lock, flags);
         iommu->root_entry = root;
@@ -567,27 +570,6 @@ static int __iommu_flush_context(struct intel_iommu *iommu,
         return 0;
 }
 
-static int inline iommu_flush_context_global(struct intel_iommu *iommu,
-        int non_present_entry_flush)
-{
-        return __iommu_flush_context(iommu, 0, 0, 0, DMA_CCMD_GLOBAL_INVL,
-                non_present_entry_flush);
-}
-
-static int inline iommu_flush_context_domain(struct intel_iommu *iommu, u16 did,
-        int non_present_entry_flush)
-{
-        return __iommu_flush_context(iommu, did, 0, 0, DMA_CCMD_DOMAIN_INVL,
-                non_present_entry_flush);
-}
-
-static int inline iommu_flush_context_device(struct intel_iommu *iommu,
-        u16 did, u16 source_id, u8 function_mask, int non_present_entry_flush)
-{
-        return __iommu_flush_context(iommu, did, source_id, function_mask,
-                DMA_CCMD_DEVICE_INVL, non_present_entry_flush);
-}
-
 /* return value determine if we need a write buffer flush */
 static int __iommu_flush_iotlb(struct intel_iommu *iommu, u16 did,
         u64 addr, unsigned int size_order, u64 type,
@@ -655,37 +637,25 @@ static int __iommu_flush_iotlb(struct intel_iommu *iommu, u16 did,
                 printk(KERN_ERR"IOMMU: flush IOTLB failed\n");
         if (DMA_TLB_IAIG(val) != DMA_TLB_IIRG(type))
                 pr_debug("IOMMU: tlb flush request %Lx, actual %Lx\n",
-                        DMA_TLB_IIRG(type), DMA_TLB_IAIG(val));
+                        (unsigned long long)DMA_TLB_IIRG(type),
+                        (unsigned long long)DMA_TLB_IAIG(val));
         /* flush iotlb entry will implicitly flush write buffer */
         return 0;
 }
 
-static int inline iommu_flush_iotlb_global(struct intel_iommu *iommu,
-        int non_present_entry_flush)
-{
-        return __iommu_flush_iotlb(iommu, 0, 0, 0, DMA_TLB_GLOBAL_FLUSH,
-                non_present_entry_flush);
-}
-
-static int inline iommu_flush_iotlb_dsi(struct intel_iommu *iommu, u16 did,
-        int non_present_entry_flush)
-{
-        return __iommu_flush_iotlb(iommu, did, 0, 0, DMA_TLB_DSI_FLUSH,
-                non_present_entry_flush);
-}
-
 static int iommu_flush_iotlb_psi(struct intel_iommu *iommu, u16 did,
         u64 addr, unsigned int pages, int non_present_entry_flush)
 {
         unsigned int mask;
 
-        BUG_ON(addr & (~PAGE_MASK_4K));
+        BUG_ON(addr & (~VTD_PAGE_MASK));
         BUG_ON(pages == 0);
 
         /* Fallback to domain selective flush if no PSI support */
         if (!cap_pgsel_inv(iommu->cap))
-                return iommu_flush_iotlb_dsi(iommu, did,
-                        non_present_entry_flush);
+                return iommu->flush.flush_iotlb(iommu, did, 0, 0,
+                                                DMA_TLB_DSI_FLUSH,
+                                                non_present_entry_flush);
 
         /*
          * PSI requires page size to be 2 ^ x, and the base address is naturally
@@ -694,11 +664,12 @@ static int iommu_flush_iotlb_psi(struct intel_iommu *iommu, u16 did,
         mask = ilog2(__roundup_pow_of_two(pages));
         /* Fallback to domain selective flush if size is too big */
         if (mask > cap_max_amask_val(iommu->cap))
-                return iommu_flush_iotlb_dsi(iommu, did,
-                        non_present_entry_flush);
+                return iommu->flush.flush_iotlb(iommu, did, 0, 0,
+                        DMA_TLB_DSI_FLUSH, non_present_entry_flush);
 
-        return __iommu_flush_iotlb(iommu, did, addr, mask,
-                DMA_TLB_PSI_FLUSH, non_present_entry_flush);
+        return iommu->flush.flush_iotlb(iommu, did, addr, mask,
+                                        DMA_TLB_PSI_FLUSH,
+                                        non_present_entry_flush);
 }
 
 static void iommu_disable_protect_mem_regions(struct intel_iommu *iommu)
@@ -831,7 +802,7 @@ void dmar_msi_read(int irq, struct msi_msg *msg)
 }
 
 static int iommu_page_fault_do_one(struct intel_iommu *iommu, int type,
-                u8 fault_reason, u16 source_id, u64 addr)
+                u8 fault_reason, u16 source_id, unsigned long long addr)
 {
         const char *reason;
 
@@ -1084,9 +1055,9 @@ static void dmar_init_reserved_ranges(void)
                         if (!r->flags || !(r->flags & IORESOURCE_MEM))
                                 continue;
                         addr = r->start;
-                        addr &= PAGE_MASK_4K;
+                        addr &= PAGE_MASK;
                         size = r->end - addr;
-                        size = PAGE_ALIGN_4K(size);
+                        size = PAGE_ALIGN(size);
                         iova = reserve_iova(&reserved_iova_list, IOVA_PFN(addr),
                                 IOVA_PFN(size + addr) - 1);
                         if (!iova)
@@ -1148,7 +1119,7 @@ static int domain_init(struct dmar_domain *domain, int guest_width)
         domain->pgd = (struct dma_pte *)alloc_pgtable_page();
         if (!domain->pgd)
                 return -ENOMEM;
-        __iommu_flush_cache(iommu, domain->pgd, PAGE_SIZE_4K);
+        __iommu_flush_cache(iommu, domain->pgd, PAGE_SIZE);
         return 0;
 }
 
@@ -1164,7 +1135,7 @@ static void domain_exit(struct dmar_domain *domain)
         /* destroy iovas */
         put_iova_domain(&domain->iovad);
         end = DOMAIN_MAX_ADDR(domain->gaw);
-        end = end & (~PAGE_MASK_4K);
+        end = end & (~PAGE_MASK);
 
         /* clear ptes */
         dma_pte_clear_range(domain, 0, end);
@@ -1204,11 +1175,13 @@ static int domain_context_mapping_one(struct dmar_domain *domain,
         __iommu_flush_cache(iommu, context, sizeof(*context));
 
         /* it's a non-present to present mapping */
-        if (iommu_flush_context_device(iommu, domain->id,
-                        (((u16)bus) << 8) | devfn, DMA_CCMD_MASK_NOBIT, 1))
+        if (iommu->flush.flush_context(iommu, domain->id,
+                (((u16)bus) << 8) | devfn, DMA_CCMD_MASK_NOBIT,
+                DMA_CCMD_DEVICE_INVL, 1))
                 iommu_flush_write_buffer(iommu);
         else
-                iommu_flush_iotlb_dsi(iommu, 0, 0);
+                iommu->flush.flush_iotlb(iommu, 0, 0, 0, DMA_TLB_DSI_FLUSH, 0);
+
         spin_unlock_irqrestore(&iommu->lock, flags);
         return 0;
 }
@@ -1283,22 +1256,25 @@ domain_page_mapping(struct dmar_domain *domain, dma_addr_t iova,
         u64 start_pfn, end_pfn;
         struct dma_pte *pte;
         int index;
+        int addr_width = agaw_to_width(domain->agaw);
+
+        hpa &= (((u64)1) << addr_width) - 1;
 
         if ((prot & (DMA_PTE_READ|DMA_PTE_WRITE)) == 0)
                 return -EINVAL;
-        iova &= PAGE_MASK_4K;
-        start_pfn = ((u64)hpa) >> PAGE_SHIFT_4K;
-        end_pfn = (PAGE_ALIGN_4K(((u64)hpa) + size)) >> PAGE_SHIFT_4K;
+        iova &= PAGE_MASK;
+        start_pfn = ((u64)hpa) >> VTD_PAGE_SHIFT;
+        end_pfn = (VTD_PAGE_ALIGN(((u64)hpa) + size)) >> VTD_PAGE_SHIFT;
         index = 0;
         while (start_pfn < end_pfn) {
-                pte = addr_to_dma_pte(domain, iova + PAGE_SIZE_4K * index);
+                pte = addr_to_dma_pte(domain, iova + VTD_PAGE_SIZE * index);
                 if (!pte)
                         return -ENOMEM;
                 /* We don't need lock here, nobody else
                  * touches the iova range
                  */
                 BUG_ON(dma_pte_addr(*pte));
-                dma_set_pte_addr(*pte, start_pfn << PAGE_SHIFT_4K);
+                dma_set_pte_addr(*pte, start_pfn << VTD_PAGE_SHIFT);
                 dma_set_pte_prot(*pte, prot);
                 __iommu_flush_cache(domain->iommu, pte, sizeof(*pte));
                 start_pfn++;
@@ -1310,8 +1286,10 @@ domain_page_mapping(struct dmar_domain *domain, dma_addr_t iova,
 static void detach_domain_for_dev(struct dmar_domain *domain, u8 bus, u8 devfn)
 {
         clear_context_table(domain->iommu, bus, devfn);
-        iommu_flush_context_global(domain->iommu, 0);
-        iommu_flush_iotlb_global(domain->iommu, 0);
+        domain->iommu->flush.flush_context(domain->iommu, 0, 0, 0,
+                                           DMA_CCMD_GLOBAL_INVL, 0);
+        domain->iommu->flush.flush_iotlb(domain->iommu, 0, 0, 0,
+                                         DMA_TLB_GLOBAL_FLUSH, 0);
 }
 
 static void domain_remove_dev_info(struct dmar_domain *domain)
@@ -1474,11 +1452,13 @@ error:
         return find_domain(pdev);
 }
 
-static int iommu_prepare_identity_map(struct pci_dev *pdev, u64 start, u64 end)
+static int iommu_prepare_identity_map(struct pci_dev *pdev,
+                                      unsigned long long start,
+                                      unsigned long long end)
 {
         struct dmar_domain *domain;
         unsigned long size;
-        u64 base;
+        unsigned long long base;
         int ret;
 
         printk(KERN_INFO
@@ -1490,9 +1470,9 @@ static int iommu_prepare_identity_map(struct pci_dev *pdev, u64 start, u64 end)
                 return -ENOMEM;
 
         /* The address might not be aligned */
-        base = start & PAGE_MASK_4K;
+        base = start & PAGE_MASK;
         size = end - base;
-        size = PAGE_ALIGN_4K(size);
+        size = PAGE_ALIGN(size);
         if (!reserve_iova(&domain->iovad, IOVA_PFN(base),
                         IOVA_PFN(base + size) - 1)) {
                 printk(KERN_ERR "IOMMU: reserve iova failed\n");
@@ -1662,6 +1642,28 @@ int __init init_dmars(void)
                 }
         }
 
+        for_each_drhd_unit(drhd) {
+                if (drhd->ignored)
+                        continue;
+
+                iommu = drhd->iommu;
+                if (dmar_enable_qi(iommu)) {
+                        /*
+                         * Queued Invalidate not enabled, use Register Based
+                         * Invalidate
+                         */
+                        iommu->flush.flush_context = __iommu_flush_context;
+                        iommu->flush.flush_iotlb = __iommu_flush_iotlb;
+                        printk(KERN_INFO "IOMMU 0x%Lx: using Register based "
+                               "invalidation\n", drhd->reg_base_addr);
+                } else {
+                        iommu->flush.flush_context = qi_flush_context;
+                        iommu->flush.flush_iotlb = qi_flush_iotlb;
+                        printk(KERN_INFO "IOMMU 0x%Lx: using Queued "
+                               "invalidation\n", drhd->reg_base_addr);
+                }
+        }
+
         /*
          * For each rmrr
          *   for each dev attached to rmrr
@@ -1714,9 +1716,10 @@ int __init init_dmars(void)
 
                 iommu_set_root_entry(iommu);
 
-                iommu_flush_context_global(iommu, 0);
-                iommu_flush_iotlb_global(iommu, 0);
-
+                iommu->flush.flush_context(iommu, 0, 0, 0, DMA_CCMD_GLOBAL_INVL,
+                                           0);
+                iommu->flush.flush_iotlb(iommu, 0, 0, 0, DMA_TLB_GLOBAL_FLUSH,
+                                         0);
                 iommu_disable_protect_mem_regions(iommu);
 
                 ret = iommu_enable_translation(iommu);
@@ -1738,8 +1741,8 @@ error:
 static inline u64 aligned_size(u64 host_addr, size_t size)
 {
         u64 addr;
-        addr = (host_addr & (~PAGE_MASK_4K)) + size;
-        return PAGE_ALIGN_4K(addr);
+        addr = (host_addr & (~PAGE_MASK)) + size;
+        return PAGE_ALIGN(addr);
 }
 
 struct iova *
@@ -1753,20 +1756,20 @@ iommu_alloc_iova(struct dmar_domain *domain, size_t size, u64 end)
                 return NULL;
 
         piova = alloc_iova(&domain->iovad,
-                        size >> PAGE_SHIFT_4K, IOVA_PFN(end), 1);
+                        size >> PAGE_SHIFT, IOVA_PFN(end), 1);
         return piova;
 }
 
 static struct iova *
 __intel_alloc_iova(struct device *dev, struct dmar_domain *domain,
-                size_t size)
+                   size_t size, u64 dma_mask)
 {
         struct pci_dev *pdev = to_pci_dev(dev);
         struct iova *iova = NULL;
 
-        if ((pdev->dma_mask <= DMA_32BIT_MASK) || (dmar_forcedac)) {
-                iova = iommu_alloc_iova(domain, size, pdev->dma_mask);
-        } else  {
+        if (dma_mask <= DMA_32BIT_MASK || dmar_forcedac)
+                iova = iommu_alloc_iova(domain, size, dma_mask);
+        else {
                 /*
                  * First try to allocate an io virtual address in
                  * DMA_32BIT_MASK and if that fails then try allocating
@@ -1774,7 +1777,7 @@ __intel_alloc_iova(struct device *dev, struct dmar_domain *domain,
                  */
                 iova = iommu_alloc_iova(domain, size, DMA_32BIT_MASK);
                 if (!iova)
-                        iova = iommu_alloc_iova(domain, size, pdev->dma_mask);
+                        iova = iommu_alloc_iova(domain, size, dma_mask);
         }
 
         if (!iova) {
@@ -1813,12 +1816,12 @@ get_valid_domain_for_dev(struct pci_dev *pdev)
         return domain;
 }
 
-static dma_addr_t
-intel_map_single(struct device *hwdev, phys_addr_t paddr, size_t size, int dir)
+static dma_addr_t __intel_map_single(struct device *hwdev, phys_addr_t paddr,
+                                     size_t size, int dir, u64 dma_mask)
 {
         struct pci_dev *pdev = to_pci_dev(hwdev);
         struct dmar_domain *domain;
-        unsigned long start_paddr;
+        phys_addr_t start_paddr;
         struct iova *iova;
         int prot = 0;
         int ret;
@@ -1833,11 +1836,11 @@ intel_map_single(struct device *hwdev, phys_addr_t paddr, size_t size, int dir)
 
         size = aligned_size((u64)paddr, size);
 
-        iova = __intel_alloc_iova(hwdev, domain, size);
+        iova = __intel_alloc_iova(hwdev, domain, size, pdev->dma_mask);
         if (!iova)
                 goto error;
 
-        start_paddr = iova->pfn_lo << PAGE_SHIFT_4K;
+        start_paddr = (phys_addr_t)iova->pfn_lo << PAGE_SHIFT;
 
         /*
          * Check if DMAR supports zero-length reads on write only
@@ -1855,30 +1858,33 @@ intel_map_single(struct device *hwdev, phys_addr_t paddr, size_t size, int dir)
          * is not a big problem
          */
         ret = domain_page_mapping(domain, start_paddr,
-                ((u64)paddr) & PAGE_MASK_4K, size, prot);
+                ((u64)paddr) & PAGE_MASK, size, prot);
         if (ret)
                 goto error;
 
-        pr_debug("Device %s request: %lx@%llx mapping: %lx@%llx, dir %d\n",
-                pci_name(pdev), size, (u64)paddr,
-                size, (u64)start_paddr, dir);
-
         /* it's a non-present to present mapping */
         ret = iommu_flush_iotlb_psi(domain->iommu, domain->id,
-                        start_paddr, size >> PAGE_SHIFT_4K, 1);
+                        start_paddr, size >> VTD_PAGE_SHIFT, 1);
         if (ret)
                 iommu_flush_write_buffer(domain->iommu);
 
-        return (start_paddr + ((u64)paddr & (~PAGE_MASK_4K)));
+        return start_paddr + ((u64)paddr & (~PAGE_MASK));
 
 error:
         if (iova)
                 __free_iova(&domain->iovad, iova);
         printk(KERN_ERR"Device %s request: %lx@%llx dir %d --- failed\n",
-                pci_name(pdev), size, (u64)paddr, dir);
+                pci_name(pdev), size, (unsigned long long)paddr, dir);
         return 0;
 }
 
+dma_addr_t intel_map_single(struct device *hwdev, phys_addr_t paddr,
+                            size_t size, int dir)
+{
+        return __intel_map_single(hwdev, paddr, size, dir,
+                                  to_pci_dev(hwdev)->dma_mask);
+}
+
 static void flush_unmaps(void)
 {
         int i, j;
@@ -1891,7 +1897,8 @@ static void flush_unmaps(void)
                         struct intel_iommu *iommu =
                                 deferred_flush[i].domain[0]->iommu;
 
-                        iommu_flush_iotlb_global(iommu, 0);
+                        iommu->flush.flush_iotlb(iommu, 0, 0, 0,
+                                                 DMA_TLB_GLOBAL_FLUSH, 0);
                         for (j = 0; j < deferred_flush[i].next; j++) {
                                 __free_iova(&deferred_flush[i].domain[j]->iovad,
                                                 deferred_flush[i].iova[j]);
@@ -1936,8 +1943,8 @@ static void add_unmap(struct dmar_domain *dom, struct iova *iova)
         spin_unlock_irqrestore(&async_umap_flush_lock, flags);
 }
 
-static void intel_unmap_single(struct device *dev, dma_addr_t dev_addr,
-        size_t size, int dir)
+void intel_unmap_single(struct device *dev, dma_addr_t dev_addr, size_t size,
+                        int dir)
 {
         struct pci_dev *pdev = to_pci_dev(dev);
         struct dmar_domain *domain;
@@ -1953,11 +1960,11 @@ static void intel_unmap_single(struct device *dev, dma_addr_t dev_addr,
         if (!iova)
                 return;
 
-        start_addr = iova->pfn_lo << PAGE_SHIFT_4K;
+        start_addr = iova->pfn_lo << PAGE_SHIFT;
         size = aligned_size((u64)dev_addr, size);
 
         pr_debug("Device %s unmapping: %lx@%llx\n",
-                pci_name(pdev), size, (u64)start_addr);
+                pci_name(pdev), size, (unsigned long long)start_addr);
 
         /*  clear the whole page */
         dma_pte_clear_range(domain, start_addr, start_addr + size);
@@ -1965,7 +1972,7 @@ static void intel_unmap_single(struct device *dev, dma_addr_t dev_addr,
         dma_pte_free_pagetable(domain, start_addr, start_addr + size);
         if (intel_iommu_strict) {
                 if (iommu_flush_iotlb_psi(domain->iommu,
-                        domain->id, start_addr, size >> PAGE_SHIFT_4K, 0))
+                        domain->id, start_addr, size >> VTD_PAGE_SHIFT, 0))
                         iommu_flush_write_buffer(domain->iommu);
                 /* free iova */
                 __free_iova(&domain->iovad, iova);
@@ -1978,13 +1985,13 @@ static void intel_unmap_single(struct device *dev, dma_addr_t dev_addr,
         }
 }
 
-static void * intel_alloc_coherent(struct device *hwdev, size_t size,
-                       dma_addr_t *dma_handle, gfp_t flags)
+void *intel_alloc_coherent(struct device *hwdev, size_t size,
+                           dma_addr_t *dma_handle, gfp_t flags)
 {
         void *vaddr;
         int order;
 
-        size = PAGE_ALIGN_4K(size);
+        size = PAGE_ALIGN(size);
         order = get_order(size);
         flags &= ~(GFP_DMA | GFP_DMA32);
 
@@ -1993,19 +2000,21 @@ static void * intel_alloc_coherent(struct device *hwdev, size_t size,
                 return NULL;
         memset(vaddr, 0, size);
 
-        *dma_handle = intel_map_single(hwdev, virt_to_bus(vaddr), size, DMA_BIDIRECTIONAL);
+        *dma_handle = __intel_map_single(hwdev, virt_to_bus(vaddr), size,
+                                         DMA_BIDIRECTIONAL,
+                                         hwdev->coherent_dma_mask);
         if (*dma_handle)
                 return vaddr;
         free_pages((unsigned long)vaddr, order);
         return NULL;
 }
 
-static void intel_free_coherent(struct device *hwdev, size_t size,
-        void *vaddr, dma_addr_t dma_handle)
+void intel_free_coherent(struct device *hwdev, size_t size, void *vaddr,
+                         dma_addr_t dma_handle)
 {
         int order;
 
-        size = PAGE_ALIGN_4K(size);
+        size = PAGE_ALIGN(size);
         order = get_order(size);
 
         intel_unmap_single(hwdev, dma_handle, size, DMA_BIDIRECTIONAL);
@@ -2013,8 +2022,9 @@ static void intel_free_coherent(struct device *hwdev, size_t size,
 }
 
 #define SG_ENT_VIRT_ADDRESS(sg) (sg_virt((sg)))
-static void intel_unmap_sg(struct device *hwdev, struct scatterlist *sglist,
-        int nelems, int dir)
+
+void intel_unmap_sg(struct device *hwdev, struct scatterlist *sglist,
+                    int nelems, int dir)
 {
         int i;
         struct pci_dev *pdev = to_pci_dev(hwdev);
@@ -2038,7 +2048,7 @@ static void intel_unmap_sg(struct device *hwdev, struct scatterlist *sglist,
                 size += aligned_size((u64)addr, sg->length);
         }
 
-        start_addr = iova->pfn_lo << PAGE_SHIFT_4K;
+        start_addr = iova->pfn_lo << PAGE_SHIFT;
 
         /*  clear the whole page */
         dma_pte_clear_range(domain, start_addr, start_addr + size);
@@ -2046,7 +2056,7 @@ static void intel_unmap_sg(struct device *hwdev, struct scatterlist *sglist,
         dma_pte_free_pagetable(domain, start_addr, start_addr + size);
 
         if (iommu_flush_iotlb_psi(domain->iommu, domain->id, start_addr,
-                        size >> PAGE_SHIFT_4K, 0))
+                        size >> VTD_PAGE_SHIFT, 0))
                 iommu_flush_write_buffer(domain->iommu);
 
         /* free iova */
@@ -2067,8 +2077,8 @@ static int intel_nontranslate_map_sg(struct device *hddev,
         return nelems;
 }
 
-static int intel_map_sg(struct device *hwdev, struct scatterlist *sglist,
-                                int nelems, int dir)
+int intel_map_sg(struct device *hwdev, struct scatterlist *sglist, int nelems,
+                 int dir)
 {
         void *addr;
         int i;
@@ -2096,7 +2106,7 @@ static int intel_map_sg(struct device *hwdev, struct scatterlist *sglist,
                 size += aligned_size((u64)addr, sg->length);
         }
 
-        iova = __intel_alloc_iova(hwdev, domain, size);
+        iova = __intel_alloc_iova(hwdev, domain, size, pdev->dma_mask);
         if (!iova) {
                 sglist->dma_length = 0;
                 return 0;
@@ -2112,14 +2122,14 @@ static int intel_map_sg(struct device *hwdev, struct scatterlist *sglist,
         if (dir == DMA_FROM_DEVICE || dir == DMA_BIDIRECTIONAL)
                 prot |= DMA_PTE_WRITE;
 
-        start_addr = iova->pfn_lo << PAGE_SHIFT_4K;
+        start_addr = iova->pfn_lo << PAGE_SHIFT;
         offset = 0;
         for_each_sg(sglist, sg, nelems, i) {
                 addr = SG_ENT_VIRT_ADDRESS(sg);
                 addr = (void *)virt_to_phys(addr);
                 size = aligned_size((u64)addr, sg->length);
                 ret = domain_page_mapping(domain, start_addr + offset,
-                        ((u64)addr) & PAGE_MASK_4K,
+                        ((u64)addr) & PAGE_MASK,
                         size, prot);
                 if (ret) {
                         /*  clear the page */
@@ -2133,14 +2143,14 @@ static int intel_map_sg(struct device *hwdev, struct scatterlist *sglist,
                         return 0;
                 }
                 sg->dma_address = start_addr + offset +
-                                ((u64)addr & (~PAGE_MASK_4K));
+                                ((u64)addr & (~PAGE_MASK));
                 sg->dma_length = sg->length;
                 offset += size;
         }
 
         /* it's a non-present to present mapping */
         if (iommu_flush_iotlb_psi(domain->iommu, domain->id,
-                        start_addr, offset >> PAGE_SHIFT_4K, 1))
+                        start_addr, offset >> VTD_PAGE_SHIFT, 1))
                 iommu_flush_write_buffer(domain->iommu);
         return nelems;
 }
@@ -2180,7 +2190,6 @@ static inline int iommu_devinfo_cache_init(void)
                                          sizeof(struct device_domain_info),
                                          0,
                                          SLAB_HWCACHE_ALIGN,
-
                                          NULL);
         if (!iommu_devinfo_cache) {
                 printk(KERN_ERR "Couldn't create devinfo cache\n");
@@ -2198,7 +2207,6 @@ static inline int iommu_iova_cache_init(void)
                                          sizeof(struct iova),
                                          0,
                                          SLAB_HWCACHE_ALIGN,
-
                                          NULL);
         if (!iommu_iova_cache) {
                 printk(KERN_ERR "Couldn't create iova cache\n");
@@ -2327,7 +2335,7 @@ void intel_iommu_domain_exit(struct dmar_domain *domain)
                 return;
 
         end = DOMAIN_MAX_ADDR(domain->gaw);
-        end = end & (~PAGE_MASK_4K);
+        end = end & (~VTD_PAGE_MASK);
 
         /* clear ptes */
         dma_pte_clear_range(domain, 0, end);
@@ -2423,6 +2431,6 @@ u64 intel_iommu_iova_to_pfn(struct dmar_domain *domain, u64 iova)
         if (pte)
                 pfn = dma_pte_addr(*pte);
 
-        return pfn >> PAGE_SHIFT_4K;
+        return pfn >> VTD_PAGE_SHIFT;
 }
 EXPORT_SYMBOL_GPL(intel_iommu_iova_to_pfn);
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index bbf66ea8fd87..96cf8ecd04ce 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -43,6 +43,20 @@ static void __devinit quirk_mellanox_tavor(struct pci_dev *dev)
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR,quirk_mellanox_tavor);
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE,quirk_mellanox_tavor);
 
+/* Many VIA bridges seem to corrupt data for DAC. Disable it here */
+int forbid_dac __read_mostly;
+EXPORT_SYMBOL(forbid_dac);
+
+static __devinit void via_no_dac(struct pci_dev *dev)
+{
+        if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI && forbid_dac == 0) {
+                dev_info(&dev->dev,
+                        "VIA PCI bridge detected. Disabling DAC.\n");
+                forbid_dac = 1;
+        }
+}
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_ANY_ID, via_no_dac);
+
 /* Deal with broken BIOS'es that neglect to enable passive release,
    which can cause problems in combination with the 82441FX/PPro MTRRs */
 static void quirk_passive_release(struct pci_dev *dev)
diff --git a/drivers/pcmcia/Makefile b/drivers/pcmcia/Makefile
index b46c60b72708..23e492bf75cf 100644
--- a/drivers/pcmcia/Makefile
+++ b/drivers/pcmcia/Makefile
@@ -70,7 +70,7 @@ pxa2xx-obj-$(CONFIG_MACH_MAINSTONE)		+= pxa2xx_mainstone.o
 pxa2xx-obj-$(CONFIG_PXA_SHARPSL)                += pxa2xx_sharpsl.o
 pxa2xx-obj-$(CONFIG_MACH_ARMCORE)               += pxa2xx_cm_x2xx_cs.o
 pxa2xx-obj-$(CONFIG_ARCH_VIPER)                 += pxa2xx_viper.o
-pxa2xx-obj-$(CONFIG_TRIZEPS_PCMCIA)             += pxa2xx_trizeps.o
+pxa2xx-obj-$(CONFIG_TRIZEPS_PCMCIA)             += pxa2xx_trizeps4.o
 pxa2xx-obj-$(CONFIG_MACH_PALMTX)                += pxa2xx_palmtx.o
 pxa2xx-obj-$(CONFIG_MACH_PALMLD)                += pxa2xx_palmld.o
 
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 814f49fde530..847481dc8d72 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -246,6 +246,16 @@ config RTC_DRV_TWL92330
           platforms.  The support is integrated with the rest of
           the Menelaus driver; it's not separate module.
 
+config RTC_DRV_TWL4030
+        tristate "TI TWL4030/TWL5030/TPS659x0"
+        depends on RTC_CLASS && TWL4030_CORE
+        help
+          If you say yes here you get support for the RTC on the
+          TWL4030 family chips, used mostly with OMAP3 platforms.
+
+          This driver can also be built as a module. If so, the module
+          will be called rtc-twl4030.
+
 config RTC_DRV_S35390A
         tristate "Seiko Instruments S-35390A"
         select BITREVERSE
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index d6a9ac7176ea..e9e8474cc8fe 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -63,6 +63,7 @@ obj-$(CONFIG_RTC_DRV_SA1100)	+= rtc-sa1100.o
 obj-$(CONFIG_RTC_DRV_SH)        += rtc-sh.o
 obj-$(CONFIG_RTC_DRV_STK17TA8)  += rtc-stk17ta8.o
 obj-$(CONFIG_RTC_DRV_TEST)      += rtc-test.o
+obj-$(CONFIG_RTC_DRV_TWL4030)   += rtc-twl4030.o
 obj-$(CONFIG_RTC_DRV_V3020)     += rtc-v3020.o
 obj-$(CONFIG_RTC_DRV_VR41XX)    += rtc-vr41xx.o
 obj-$(CONFIG_RTC_DRV_X1205)     += rtc-x1205.o
diff --git a/drivers/rtc/rtc-twl4030.c b/drivers/rtc/rtc-twl4030.c
new file mode 100644
index 000000000000..abe87a4d2665
--- /dev/null
+++ b/drivers/rtc/rtc-twl4030.c
@@ -0,0 +1,564 @@
+/*
+ * rtc-twl4030.c -- TWL4030 Real Time Clock interface
+ *
+ * Copyright (C) 2007 MontaVista Software, Inc
+ * Author: Alexandre Rusev <source@mvista.com>
+ *
+ * Based on original TI driver twl4030-rtc.c
+ *   Copyright (C) 2006 Texas Instruments, Inc.
+ *
+ * Based on rtc-omap.c
+ *   Copyright (C) 2003 MontaVista Software, Inc.
+ *   Author: George G. Davis <gdavis@mvista.com> or <source@mvista.com>
+ *   Copyright (C) 2006 David Brownell
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/rtc.h>
+#include <linux/bcd.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+
+#include <linux/i2c/twl4030.h>
+
+
+/*
+ * RTC block register offsets (use TWL_MODULE_RTC)
+ */
+#define REG_SECONDS_REG                          0x00
+#define REG_MINUTES_REG                          0x01
+#define REG_HOURS_REG                            0x02
+#define REG_DAYS_REG                             0x03
+#define REG_MONTHS_REG                           0x04
+#define REG_YEARS_REG                            0x05
+#define REG_WEEKS_REG                            0x06
+
+#define REG_ALARM_SECONDS_REG                    0x07
+#define REG_ALARM_MINUTES_REG                    0x08
+#define REG_ALARM_HOURS_REG                      0x09
+#define REG_ALARM_DAYS_REG                       0x0A
+#define REG_ALARM_MONTHS_REG                     0x0B
+#define REG_ALARM_YEARS_REG                      0x0C
+
+#define REG_RTC_CTRL_REG                         0x0D
+#define REG_RTC_STATUS_REG                       0x0E
+#define REG_RTC_INTERRUPTS_REG                   0x0F
+
+#define REG_RTC_COMP_LSB_REG                     0x10
+#define REG_RTC_COMP_MSB_REG                     0x11
+
+/* RTC_CTRL_REG bitfields */
+#define BIT_RTC_CTRL_REG_STOP_RTC_M              0x01
+#define BIT_RTC_CTRL_REG_ROUND_30S_M             0x02
+#define BIT_RTC_CTRL_REG_AUTO_COMP_M             0x04
+#define BIT_RTC_CTRL_REG_MODE_12_24_M            0x08
+#define BIT_RTC_CTRL_REG_TEST_MODE_M             0x10
+#define BIT_RTC_CTRL_REG_SET_32_COUNTER_M        0x20
+#define BIT_RTC_CTRL_REG_GET_TIME_M              0x40
+
+/* RTC_STATUS_REG bitfields */
+#define BIT_RTC_STATUS_REG_RUN_M                 0x02
+#define BIT_RTC_STATUS_REG_1S_EVENT_M            0x04
+#define BIT_RTC_STATUS_REG_1M_EVENT_M            0x08
+#define BIT_RTC_STATUS_REG_1H_EVENT_M            0x10
+#define BIT_RTC_STATUS_REG_1D_EVENT_M            0x20
+#define BIT_RTC_STATUS_REG_ALARM_M               0x40
+#define BIT_RTC_STATUS_REG_POWER_UP_M            0x80
+
+/* RTC_INTERRUPTS_REG bitfields */
+#define BIT_RTC_INTERRUPTS_REG_EVERY_M           0x03
+#define BIT_RTC_INTERRUPTS_REG_IT_TIMER_M        0x04
+#define BIT_RTC_INTERRUPTS_REG_IT_ALARM_M        0x08
+
+
+/* REG_SECONDS_REG through REG_YEARS_REG is how many registers? */
+#define ALL_TIME_REGS           6
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * Supports 1 byte read from TWL4030 RTC register.
+ */
+static int twl4030_rtc_read_u8(u8 *data, u8 reg)
+{
+        int ret;
+
+        ret = twl4030_i2c_read_u8(TWL4030_MODULE_RTC, data, reg);
+        if (ret < 0)
+                pr_err("twl4030_rtc: Could not read TWL4030"
+                       "register %X - error %d\n", reg, ret);
+        return ret;
+}
+
+/*
+ * Supports 1 byte write to TWL4030 RTC registers.
+ */
+static int twl4030_rtc_write_u8(u8 data, u8 reg)
+{
+        int ret;
+
+        ret = twl4030_i2c_write_u8(TWL4030_MODULE_RTC, data, reg);
+        if (ret < 0)
+                pr_err("twl4030_rtc: Could not write TWL4030"
+                       "register %X - error %d\n", reg, ret);
+        return ret;
+}
+
+/*
+ * Cache the value for timer/alarm interrupts register; this is
+ * only changed by callers holding rtc ops lock (or resume).
+ */
+static unsigned char rtc_irq_bits;
+
+/*
+ * Enable timer and/or alarm interrupts.
+ */
+static int set_rtc_irq_bit(unsigned char bit)
+{
+        unsigned char val;
+        int ret;
+
+        val = rtc_irq_bits | bit;
+        ret = twl4030_rtc_write_u8(val, REG_RTC_INTERRUPTS_REG);
+        if (ret == 0)
+                rtc_irq_bits = val;
+
+        return ret;
+}
+
+/*
+ * Disable timer and/or alarm interrupts.
+ */
+static int mask_rtc_irq_bit(unsigned char bit)
+{
+        unsigned char val;
+        int ret;
+
+        val = rtc_irq_bits & ~bit;
+        ret = twl4030_rtc_write_u8(val, REG_RTC_INTERRUPTS_REG);
+        if (ret == 0)
+                rtc_irq_bits = val;
+
+        return ret;
+}
+
+static inline int twl4030_rtc_alarm_irq_set_state(int enabled)
+{
+        int ret;
+
+        if (enabled)
+                ret = set_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_ALARM_M);
+        else
+                ret = mask_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_ALARM_M);
+
+        return ret;
+}
+
+static inline int twl4030_rtc_irq_set_state(int enabled)
+{
+        int ret;
+
+        if (enabled)
+                ret = set_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_TIMER_M);
+        else
+                ret = mask_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_TIMER_M);
+
+        return ret;
+}
+
+/*
+ * Gets current TWL4030 RTC time and date parameters.
+ *
+ * The RTC's time/alarm representation is not what gmtime(3) requires
+ * Linux to use:
+ *
+ *  - Months are 1..12 vs Linux 0-11
+ *  - Years are 0..99 vs Linux 1900..N (we assume 21st century)
+ */
+static int twl4030_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+        unsigned char rtc_data[ALL_TIME_REGS + 1];
+        int ret;
+        u8 save_control;
+
+        ret = twl4030_rtc_read_u8(&save_control, REG_RTC_CTRL_REG);
+        if (ret < 0)
+                return ret;
+
+        save_control |= BIT_RTC_CTRL_REG_GET_TIME_M;
+
+        ret = twl4030_rtc_write_u8(save_control, REG_RTC_CTRL_REG);
+        if (ret < 0)
+                return ret;
+
+        ret = twl4030_i2c_read(TWL4030_MODULE_RTC, rtc_data,
+                               REG_SECONDS_REG, ALL_TIME_REGS);
+
+        if (ret < 0) {
+                dev_err(dev, "rtc_read_time error %d\n", ret);
+                return ret;
+        }
+
+        tm->tm_sec = bcd2bin(rtc_data[0]);
+        tm->tm_min = bcd2bin(rtc_data[1]);
+        tm->tm_hour = bcd2bin(rtc_data[2]);
+        tm->tm_mday = bcd2bin(rtc_data[3]);
+        tm->tm_mon = bcd2bin(rtc_data[4]) - 1;
+        tm->tm_year = bcd2bin(rtc_data[5]) + 100;
+
+        return ret;
+}
+
+static int twl4030_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+        unsigned char save_control;
+        unsigned char rtc_data[ALL_TIME_REGS + 1];
+        int ret;
+
+        rtc_data[1] = bin2bcd(tm->tm_sec);
+        rtc_data[2] = bin2bcd(tm->tm_min);
+        rtc_data[3] = bin2bcd(tm->tm_hour);
+        rtc_data[4] = bin2bcd(tm->tm_mday);
+        rtc_data[5] = bin2bcd(tm->tm_mon + 1);
+        rtc_data[6] = bin2bcd(tm->tm_year - 100);
+
+        /* Stop RTC while updating the TC registers */
+        ret = twl4030_rtc_read_u8(&save_control, REG_RTC_CTRL_REG);
+        if (ret < 0)
+                goto out;
+
+        save_control &= ~BIT_RTC_CTRL_REG_STOP_RTC_M;
+        twl4030_rtc_write_u8(save_control, REG_RTC_CTRL_REG);
+        if (ret < 0)
+                goto out;
+
+        /* update all the time registers in one shot */
+        ret = twl4030_i2c_write(TWL4030_MODULE_RTC, rtc_data,
+                        REG_SECONDS_REG, ALL_TIME_REGS);
+        if (ret < 0) {
+                dev_err(dev, "rtc_set_time error %d\n", ret);
+                goto out;
+        }
+
+        /* Start back RTC */
+        save_control |= BIT_RTC_CTRL_REG_STOP_RTC_M;
+        ret = twl4030_rtc_write_u8(save_control, REG_RTC_CTRL_REG);
+
+out:
+        return ret;
+}
+
+/*
+ * Gets current TWL4030 RTC alarm time.
+ */
+static int twl4030_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm)
+{
+        unsigned char rtc_data[ALL_TIME_REGS + 1];
+        int ret;
+
+        ret = twl4030_i2c_read(TWL4030_MODULE_RTC, rtc_data,
+                               REG_ALARM_SECONDS_REG, ALL_TIME_REGS);
+        if (ret < 0) {
+                dev_err(dev, "rtc_read_alarm error %d\n", ret);
+                return ret;
+        }
+
+        /* some of these fields may be wildcard/"match all" */
+        alm->time.tm_sec = bcd2bin(rtc_data[0]);
+        alm->time.tm_min = bcd2bin(rtc_data[1]);
+        alm->time.tm_hour = bcd2bin(rtc_data[2]);
+        alm->time.tm_mday = bcd2bin(rtc_data[3]);
+        alm->time.tm_mon = bcd2bin(rtc_data[4]) - 1;
+        alm->time.tm_year = bcd2bin(rtc_data[5]) + 100;
+
+        /* report cached alarm enable state */
+        if (rtc_irq_bits & BIT_RTC_INTERRUPTS_REG_IT_ALARM_M)
+                alm->enabled = 1;
+
+        return ret;
+}
+
+static int twl4030_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
+{
+        unsigned char alarm_data[ALL_TIME_REGS + 1];
+        int ret;
+
+        ret = twl4030_rtc_alarm_irq_set_state(0);
+        if (ret)
+                goto out;
+
+        alarm_data[1] = bin2bcd(alm->time.tm_sec);
+        alarm_data[2] = bin2bcd(alm->time.tm_min);
+        alarm_data[3] = bin2bcd(alm->time.tm_hour);
+        alarm_data[4] = bin2bcd(alm->time.tm_mday);
+        alarm_data[5] = bin2bcd(alm->time.tm_mon + 1);
+        alarm_data[6] = bin2bcd(alm->time.tm_year - 100);
+
+        /* update all the alarm registers in one shot */
+        ret = twl4030_i2c_write(TWL4030_MODULE_RTC, alarm_data,
+                        REG_ALARM_SECONDS_REG, ALL_TIME_REGS);
+        if (ret) {
+                dev_err(dev, "rtc_set_alarm error %d\n", ret);
+                goto out;
+        }
+
+        if (alm->enabled)
+                ret = twl4030_rtc_alarm_irq_set_state(1);
+out:
+        return ret;
+}
+
+#ifdef  CONFIG_RTC_INTF_DEV
+
+static int twl4030_rtc_ioctl(struct device *dev, unsigned int cmd,
+                             unsigned long arg)
+{
+        switch (cmd) {
+        case RTC_AIE_OFF:
+                return twl4030_rtc_alarm_irq_set_state(0);
+        case RTC_AIE_ON:
+                return twl4030_rtc_alarm_irq_set_state(1);
+        case RTC_UIE_OFF:
+                return twl4030_rtc_irq_set_state(0);
+        case RTC_UIE_ON:
+                return twl4030_rtc_irq_set_state(1);
+
+        default:
+                return -ENOIOCTLCMD;
+        }
+}
+
+#else
+#define omap_rtc_ioctl  NULL
+#endif
+
+static irqreturn_t twl4030_rtc_interrupt(int irq, void *rtc)
+{
+        unsigned long events = 0;
+        int ret = IRQ_NONE;
+        int res;
+        u8 rd_reg;
+
+#ifdef CONFIG_LOCKDEP
+        /* WORKAROUND for lockdep forcing IRQF_DISABLED on us, which
+         * we don't want and can't tolerate.  Although it might be
+         * friendlier not to borrow this thread context...
+         */
+        local_irq_enable();
+#endif
+
+        res = twl4030_rtc_read_u8(&rd_reg, REG_RTC_STATUS_REG);
+        if (res)
+                goto out;
+        /*
+         * Figure out source of interrupt: ALARM or TIMER in RTC_STATUS_REG.
+         * only one (ALARM or RTC) interrupt source may be enabled
+         * at time, we also could check our results
+         * by reading RTS_INTERRUPTS_REGISTER[IT_TIMER,IT_ALARM]
+         */
+        if (rd_reg & BIT_RTC_STATUS_REG_ALARM_M)
+                events |= RTC_IRQF | RTC_AF;
+        else
+                events |= RTC_IRQF | RTC_UF;
+
+        res = twl4030_rtc_write_u8(rd_reg | BIT_RTC_STATUS_REG_ALARM_M,
+                                   REG_RTC_STATUS_REG);
+        if (res)
+                goto out;
+
+        /* Clear on Read enabled. RTC_IT bit of TWL4030_INT_PWR_ISR1
+         * needs 2 reads to clear the interrupt. One read is done in
+         * do_twl4030_pwrirq(). Doing the second read, to clear
+         * the bit.
+         *
+         * FIXME the reason PWR_ISR1 needs an extra read is that
+         * RTC_IF retriggered until we cleared REG_ALARM_M above.
+         * But re-reading like this is a bad hack; by doing so we
+         * risk wrongly clearing status for some other IRQ (losing
+         * the interrupt).  Be smarter about handling RTC_UF ...
+         */
+        res = twl4030_i2c_read_u8(TWL4030_MODULE_INT,
+                        &rd_reg, TWL4030_INT_PWR_ISR1);
+        if (res)
+                goto out;
+
+        /* Notify RTC core on event */
+        rtc_update_irq(rtc, 1, events);
+
+        ret = IRQ_HANDLED;
+out:
+        return ret;
+}
+
+static struct rtc_class_ops twl4030_rtc_ops = {
+        .ioctl          = twl4030_rtc_ioctl,
+        .read_time      = twl4030_rtc_read_time,
+        .set_time       = twl4030_rtc_set_time,
+        .read_alarm     = twl4030_rtc_read_alarm,
+        .set_alarm      = twl4030_rtc_set_alarm,
+};
+
+/*----------------------------------------------------------------------*/
+
+static int __devinit twl4030_rtc_probe(struct platform_device *pdev)
+{
+        struct rtc_device *rtc;
+        int ret = 0;
+        int irq = platform_get_irq(pdev, 0);
+        u8 rd_reg;
+
+        if (irq < 0)
+                return irq;
+
+        rtc = rtc_device_register(pdev->name,
+                                  &pdev->dev, &twl4030_rtc_ops, THIS_MODULE);
+        if (IS_ERR(rtc)) {
+                ret = -EINVAL;
+                dev_err(&pdev->dev, "can't register RTC device, err %ld\n",
+                        PTR_ERR(rtc));
+                goto out0;
+
+        }
+
+        platform_set_drvdata(pdev, rtc);
+
+        ret = twl4030_rtc_read_u8(&rd_reg, REG_RTC_STATUS_REG);
+
+        if (ret < 0)
+                goto out1;
+
+        if (rd_reg & BIT_RTC_STATUS_REG_POWER_UP_M)
+                dev_warn(&pdev->dev, "Power up reset detected.\n");
+
+        if (rd_reg & BIT_RTC_STATUS_REG_ALARM_M)
+                dev_warn(&pdev->dev, "Pending Alarm interrupt detected.\n");
+
+        /* Clear RTC Power up reset and pending alarm interrupts */
+        ret = twl4030_rtc_write_u8(rd_reg, REG_RTC_STATUS_REG);
+        if (ret < 0)
+                goto out1;
+
+        ret = request_irq(irq, twl4030_rtc_interrupt,
+                                IRQF_TRIGGER_RISING,
+                                rtc->dev.bus_id, rtc);
+        if (ret < 0) {
+                dev_err(&pdev->dev, "IRQ is not free.\n");
+                goto out1;
+        }
+
+        /* Check RTC module status, Enable if it is off */
+        ret = twl4030_rtc_read_u8(&rd_reg, REG_RTC_CTRL_REG);
+        if (ret < 0)
+                goto out2;
+
+        if (!(rd_reg & BIT_RTC_CTRL_REG_STOP_RTC_M)) {
+                dev_info(&pdev->dev, "Enabling TWL4030-RTC.\n");
+                rd_reg = BIT_RTC_CTRL_REG_STOP_RTC_M;
+                ret = twl4030_rtc_write_u8(rd_reg, REG_RTC_CTRL_REG);
+                if (ret < 0)
+                        goto out2;
+        }
+
+        /* init cached IRQ enable bits */
+        ret = twl4030_rtc_read_u8(&rtc_irq_bits, REG_RTC_INTERRUPTS_REG);
+        if (ret < 0)
+                goto out2;
+
+        return ret;
+
+
+out2:
+        free_irq(irq, rtc);
+out1:
+        rtc_device_unregister(rtc);
+out0:
+        return ret;
+}
+
+/*
+ * Disable all TWL4030 RTC module interrupts.
+ * Sets status flag to free.
+ */
+static int __devexit twl4030_rtc_remove(struct platform_device *pdev)
+{
+        /* leave rtc running, but disable irqs */
+        struct rtc_device *rtc = platform_get_drvdata(pdev);
+        int irq = platform_get_irq(pdev, 0);
+
+        mask_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_ALARM_M);
+        mask_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_TIMER_M);
+
+        free_irq(irq, rtc);
+
+        rtc_device_unregister(rtc);
+        platform_set_drvdata(pdev, NULL);
+        return 0;
+}
+
+static void twl4030_rtc_shutdown(struct platform_device *pdev)
+{
+        mask_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_TIMER_M |
+                         BIT_RTC_INTERRUPTS_REG_IT_ALARM_M);
+}
+
+#ifdef CONFIG_PM
+
+static unsigned char irqstat;
+
+static int twl4030_rtc_suspend(struct platform_device *pdev, pm_message_t state)
+{
+        irqstat = rtc_irq_bits;
+
+        /* REVISIT alarm may need to wake us from sleep */
+        mask_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_TIMER_M |
+                         BIT_RTC_INTERRUPTS_REG_IT_ALARM_M);
+        return 0;
+}
+
+static int twl4030_rtc_resume(struct platform_device *pdev)
+{
+        set_rtc_irq_bit(irqstat);
+        return 0;
+}
+
+#else
+#define twl4030_rtc_suspend NULL
+#define twl4030_rtc_resume  NULL
+#endif
+
+MODULE_ALIAS("platform:twl4030_rtc");
+
+static struct platform_driver twl4030rtc_driver = {
+        .probe          = twl4030_rtc_probe,
+        .remove         = __devexit_p(twl4030_rtc_remove),
+        .shutdown       = twl4030_rtc_shutdown,
+        .suspend        = twl4030_rtc_suspend,
+        .resume         = twl4030_rtc_resume,
+        .driver         = {
+                .owner  = THIS_MODULE,
+                .name   = "twl4030_rtc",
+        },
+};
+
+static int __init twl4030_rtc_init(void)
+{
+        return platform_driver_register(&twl4030rtc_driver);
+}
+module_init(twl4030_rtc_init);
+
+static void __exit twl4030_rtc_exit(void)
+{
+        platform_driver_unregister(&twl4030rtc_driver);
+}
+module_exit(twl4030_rtc_exit);
+
+MODULE_AUTHOR("Texas Instruments, MontaVista Software");
+MODULE_LICENSE("GPL");
diff --git a/drivers/serial/8250_pci.c b/drivers/serial/8250_pci.c
index c014ffb110e9..5450a0e5ecdb 100644
--- a/drivers/serial/8250_pci.c
+++ b/drivers/serial/8250_pci.c
@@ -1100,6 +1100,8 @@ enum pci_board_num_t {
         pbn_b0_4_1843200_200,
         pbn_b0_8_1843200_200,
 
+        pbn_b0_1_4000000,
+
         pbn_b0_bt_1_115200,
         pbn_b0_bt_2_115200,
         pbn_b0_bt_8_115200,
@@ -1167,6 +1169,10 @@ enum pci_board_num_t {
         pbn_exsys_4055,
         pbn_plx_romulus,
         pbn_oxsemi,
+        pbn_oxsemi_1_4000000,
+        pbn_oxsemi_2_4000000,
+        pbn_oxsemi_4_4000000,
+        pbn_oxsemi_8_4000000,
         pbn_intel_i960,
         pbn_sgi_ioc3,
         pbn_computone_4,
@@ -1290,6 +1296,12 @@ static struct pciserial_board pci_boards[] __devinitdata = {
                 .base_baud      = 1843200,
                 .uart_offset    = 0x200,
         },
+        [pbn_b0_1_4000000] = {
+                .flags          = FL_BASE0,
+                .num_ports      = 1,
+                .base_baud      = 4000000,
+                .uart_offset    = 8,
+        },
 
         [pbn_b0_bt_1_115200] = {
                 .flags          = FL_BASE0|FL_BASE_BARS,
@@ -1625,6 +1637,35 @@ static struct pciserial_board pci_boards[] __devinitdata = {
                 .base_baud      = 115200,
                 .uart_offset    = 8,
         },
+        [pbn_oxsemi_1_4000000] = {
+                .flags          = FL_BASE0,
+                .num_ports      = 1,
+                .base_baud      = 4000000,
+                .uart_offset    = 0x200,
+                .first_offset   = 0x1000,
+        },
+        [pbn_oxsemi_2_4000000] = {
+                .flags          = FL_BASE0,
+                .num_ports      = 2,
+                .base_baud      = 4000000,
+                .uart_offset    = 0x200,
+                .first_offset   = 0x1000,
+        },
+        [pbn_oxsemi_4_4000000] = {
+                .flags          = FL_BASE0,
+                .num_ports      = 4,
+                .base_baud      = 4000000,
+                .uart_offset    = 0x200,
+                .first_offset   = 0x1000,
+        },
+        [pbn_oxsemi_8_4000000] = {
+                .flags          = FL_BASE0,
+                .num_ports      = 8,
+                .base_baud      = 4000000,
+                .uart_offset    = 0x200,
+                .first_offset   = 0x1000,
+        },
+
 
         /*
          * EKF addition for i960 Boards form EKF with serial port.
@@ -1813,6 +1854,39 @@ serial_pci_matches(struct pciserial_board *board,
             board->first_offset == guessed->first_offset;
 }
 
+/*
+ * Oxford Semiconductor Inc.
+ * Check that device is part of the Tornado range of devices, then determine
+ * the number of ports available on the device.
+ */
+static int pci_oxsemi_tornado_init(struct pci_dev *dev, struct pciserial_board *board)
+{
+        u8 __iomem *p;
+        unsigned long deviceID;
+        unsigned int  number_uarts;
+
+        /* OxSemi Tornado devices are all 0xCxxx */
+        if (dev->vendor == PCI_VENDOR_ID_OXSEMI &&
+            (dev->device & 0xF000) != 0xC000)
+                return 0;
+
+        p = pci_iomap(dev, 0, 5);
+        if (p == NULL)
+                return -ENOMEM;
+
+        deviceID = ioread32(p);
+        /* Tornado device */
+        if (deviceID == 0x07000200) {
+                number_uarts = ioread8(p + 4);
+                board->num_ports = number_uarts;
+                printk(KERN_DEBUG
+                        "%d ports detected on Oxford PCI Express device\n",
+                                                                number_uarts);
+        }
+        pci_iounmap(dev, p);
+        return 0;
+}
+
 struct serial_private *
 pciserial_init_ports(struct pci_dev *dev, struct pciserial_board *board)
 {
@@ -1821,6 +1895,13 @@ pciserial_init_ports(struct pci_dev *dev, struct pciserial_board *board)
         struct pci_serial_quirk *quirk;
         int rc, nr_ports, i;
 
+        /*
+         * Find number of ports on board
+         */
+        if (dev->vendor == PCI_VENDOR_ID_OXSEMI ||
+            dev->vendor == PCI_VENDOR_ID_MAINPINE)
+                pci_oxsemi_tornado_init(dev, board);
+
         nr_ports = board->num_ports;
 
         /*
@@ -2301,6 +2382,156 @@ static struct pci_device_id serial_pci_tbl[] = {
                 pbn_b0_bt_2_921600 },
 
         /*
+         * Oxford Semiconductor Inc. Tornado PCI express device range.
+         */
+        {       PCI_VENDOR_ID_OXSEMI, 0xc101,    /* OXPCIe952 1 Legacy UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_b0_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc105,    /* OXPCIe952 1 Legacy UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_b0_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc11b,    /* OXPCIe952 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc11f,    /* OXPCIe952 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc120,    /* OXPCIe952 1 Legacy UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_b0_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc124,    /* OXPCIe952 1 Legacy UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_b0_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc138,    /* OXPCIe952 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc13d,    /* OXPCIe952 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc140,    /* OXPCIe952 1 Legacy UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_b0_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc141,    /* OXPCIe952 1 Legacy UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_b0_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc144,    /* OXPCIe952 1 Legacy UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_b0_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc145,    /* OXPCIe952 1 Legacy UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_b0_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc158,    /* OXPCIe952 2 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_2_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc15d,    /* OXPCIe952 2 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_2_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc208,    /* OXPCIe954 4 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_4_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc20d,    /* OXPCIe954 4 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_4_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc308,    /* OXPCIe958 8 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_8_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc30d,    /* OXPCIe958 8 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_8_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc40b,    /* OXPCIe200 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc40f,    /* OXPCIe200 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc41b,    /* OXPCIe200 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc41f,    /* OXPCIe200 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc42b,    /* OXPCIe200 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc42f,    /* OXPCIe200 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc43b,    /* OXPCIe200 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc43f,    /* OXPCIe200 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc44b,    /* OXPCIe200 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc44f,    /* OXPCIe200 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc45b,    /* OXPCIe200 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc45f,    /* OXPCIe200 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc46b,    /* OXPCIe200 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc46f,    /* OXPCIe200 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc47b,    /* OXPCIe200 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc47f,    /* OXPCIe200 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc48b,    /* OXPCIe200 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc48f,    /* OXPCIe200 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc49b,    /* OXPCIe200 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc49f,    /* OXPCIe200 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc4ab,    /* OXPCIe200 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc4af,    /* OXPCIe200 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc4bb,    /* OXPCIe200 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc4bf,    /* OXPCIe200 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc4cb,    /* OXPCIe200 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0xc4cf,    /* OXPCIe200 1 Native UART */
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        /*
+         * Mainpine Inc. IQ Express "Rev3" utilizing OxSemi Tornado
+         */
+        {       PCI_VENDOR_ID_MAINPINE, 0x4000, /* IQ Express 1 Port V.34 Super-G3 Fax */
+                PCI_VENDOR_ID_MAINPINE, 0x4001, 0, 0,
+                pbn_oxsemi_1_4000000 },
+        {       PCI_VENDOR_ID_MAINPINE, 0x4000, /* IQ Express 2 Port V.34 Super-G3 Fax */
+                PCI_VENDOR_ID_MAINPINE, 0x4002, 0, 0,
+                pbn_oxsemi_2_4000000 },
+        {       PCI_VENDOR_ID_MAINPINE, 0x4000, /* IQ Express 4 Port V.34 Super-G3 Fax */
+                PCI_VENDOR_ID_MAINPINE, 0x4004, 0, 0,
+                pbn_oxsemi_4_4000000 },
+        {       PCI_VENDOR_ID_MAINPINE, 0x4000, /* IQ Express 8 Port V.34 Super-G3 Fax */
+                PCI_VENDOR_ID_MAINPINE, 0x4008, 0, 0,
+                pbn_oxsemi_8_4000000 },
+        /*
          * SBS Technologies, Inc. P-Octal and PMC-OCTPRO cards,
          * from skokodyn@yahoo.com
          */
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index db783b77a881..c94d3c4b7521 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -457,7 +457,7 @@ config SERIAL_SAMSUNG
 
 config SERIAL_SAMSUNG_DEBUG
         bool "Samsung SoC serial debug"
-        depends on SERIAL_SAMSUNG
+        depends on SERIAL_SAMSUNG && DEBUG_LL
         help
           Add support for debugging the serial driver. Since this is
           generally being used as a console, we use our own output
diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig
index bcefbddeba50..c23a9857ee67 100644
--- a/drivers/usb/Kconfig
+++ b/drivers/usb/Kconfig
@@ -97,6 +97,8 @@ source "drivers/usb/core/Kconfig"
 
 source "drivers/usb/mon/Kconfig"
 
+source "drivers/usb/wusbcore/Kconfig"
+
 source "drivers/usb/host/Kconfig"
 
 source "drivers/usb/musb/Kconfig"
diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile
index a419c42e880e..8b7c419b876e 100644
--- a/drivers/usb/Makefile
+++ b/drivers/usb/Makefile
@@ -16,9 +16,12 @@ obj-$(CONFIG_USB_UHCI_HCD)	+= host/
 obj-$(CONFIG_USB_SL811_HCD)     += host/
 obj-$(CONFIG_USB_U132_HCD)      += host/
 obj-$(CONFIG_USB_R8A66597_HCD)  += host/
+obj-$(CONFIG_USB_HWA_HCD)       += host/
 
 obj-$(CONFIG_USB_C67X00_HCD)    += c67x00/
 
+obj-$(CONFIG_USB_WUSB)          += wusbcore/
+
 obj-$(CONFIG_USB_ACM)           += class/
 obj-$(CONFIG_USB_PRINTER)       += class/
 
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 228797e54f9c..72fb655e6033 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -305,3 +305,31 @@ config SUPERH_ON_CHIP_R8A66597
         help
            This driver enables support for the on-chip R8A66597 in the
            SH7366 and SH7723 processors.
+
+config USB_WHCI_HCD
+        tristate "Wireless USB Host Controller Interface (WHCI) driver (EXPERIMENTAL)"
+        depends on EXPERIMENTAL
+        depends on PCI && USB
+        select USB_WUSB
+        select UWB_WHCI
+        help
+          A driver for PCI-based Wireless USB Host Controllers that are
+          compliant with the WHCI specification.
+
+          To compile this driver a module, choose M here: the module
+          will be called "whci-hcd".
+
+config USB_HWA_HCD
+        tristate "Host Wire Adapter (HWA) driver (EXPERIMENTAL)"
+        depends on EXPERIMENTAL
+        depends on USB
+        select USB_WUSB
+        select UWB_HWA
+        help
+          This driver enables you to connect Wireless USB devices to
+          your system using a Host Wire Adaptor USB dongle. This is an
+          UWB Radio Controller and WUSB Host Controller connected to
+          your machine via USB (specified in WUSB1.0).
+
+          To compile this driver a module, choose M here: the module
+          will be called "hwa-hc".
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index f1edda2dcfde..23be22224044 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -8,6 +8,8 @@ endif
 
 isp1760-objs := isp1760-hcd.o isp1760-if.o
 
+obj-$(CONFIG_USB_WHCI_HCD)      += whci/
+
 obj-$(CONFIG_PCI)               += pci-quirks.o
 
 obj-$(CONFIG_USB_EHCI_HCD)      += ehci-hcd.o
@@ -19,3 +21,4 @@ obj-$(CONFIG_USB_SL811_CS)	+= sl811_cs.o
 obj-$(CONFIG_USB_U132_HCD)      += u132-hcd.o
 obj-$(CONFIG_USB_R8A66597_HCD)  += r8a66597-hcd.o
 obj-$(CONFIG_USB_ISP1760_HCD)   += isp1760.o
+obj-$(CONFIG_USB_HWA_HCD)       += hwa-hc.o
diff --git a/drivers/usb/host/hwa-hc.c b/drivers/usb/host/hwa-hc.c
new file mode 100644
index 000000000000..64be4d88df11
--- /dev/null
+++ b/drivers/usb/host/hwa-hc.c
@@ -0,0 +1,925 @@
+/*
+ * Host Wire Adapter:
+ * Driver glue, HWA-specific functions, bridges to WAHC and WUSBHC
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * The HWA driver is a simple layer that forwards requests to the WAHC
+ * (Wire Adater Host Controller) or WUSBHC (Wireless USB Host
+ * Controller) layers.
+ *
+ * Host Wire Adapter is the 'WUSB 1.0 standard' name for Wireless-USB
+ * Host Controller that is connected to your system via USB (a USB
+ * dongle that implements a USB host...). There is also a Device Wired
+ * Adaptor, DWA (Wireless USB hub) that uses the same mechanism for
+ * transferring data (it is after all a USB host connected via
+ * Wireless USB), we have a common layer called Wire Adapter Host
+ * Controller that does all the hard work. The WUSBHC (Wireless USB
+ * Host Controller) is the part common to WUSB Host Controllers, the
+ * HWA and the PCI-based one, that is implemented following the WHCI
+ * spec. All these layers are implemented in ../wusbcore.
+ *
+ * The main functions are hwahc_op_urb_{en,de}queue(), that pass the
+ * job of converting a URB to a Wire Adapter
+ *
+ * Entry points:
+ *
+ *   hwahc_driver_*()   Driver initialization, registration and
+ *                      teardown.
+ *
+ *   hwahc_probe()      New device came up, create an instance for
+ *                      it [from device enumeration].
+ *
+ *   hwahc_disconnect() Remove device instance [from device
+ *                      enumeration].
+ *
+ *   [__]hwahc_op_*()   Host-Wire-Adaptor specific functions for
+ *                      starting/stopping/etc (some might be made also
+ *                      DWA).
+ */
+#include <linux/kernel.h>
+#include <linux/version.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/workqueue.h>
+#include <linux/wait.h>
+#include <linux/completion.h>
+#include "../wusbcore/wa-hc.h"
+#include "../wusbcore/wusbhc.h"
+
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+struct hwahc {
+        struct wusbhc wusbhc;   /* has to be 1st */
+        struct wahc wa;
+        u8 buffer[16];          /* for misc usb transactions */
+};
+
+/**
+ * FIXME should be wusbhc
+ *
+ * NOTE: we need to cache the Cluster ID because later...there is no
+ *       way to get it :)
+ */
+static int __hwahc_set_cluster_id(struct hwahc *hwahc, u8 cluster_id)
+{
+        int result;
+        struct wusbhc *wusbhc = &hwahc->wusbhc;
+        struct wahc *wa = &hwahc->wa;
+        struct device *dev = &wa->usb_iface->dev;
+
+        result = usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
+                        WUSB_REQ_SET_CLUSTER_ID,
+                        USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+                        cluster_id,
+                        wa->usb_iface->cur_altsetting->desc.bInterfaceNumber,
+                        NULL, 0, 1000 /* FIXME: arbitrary */);
+        if (result < 0)
+                dev_err(dev, "Cannot set WUSB Cluster ID to 0x%02x: %d\n",
+                        cluster_id, result);
+        else
+                wusbhc->cluster_id = cluster_id;
+        dev_info(dev, "Wireless USB Cluster ID set to 0x%02x\n", cluster_id);
+        return result;
+}
+
+static int __hwahc_op_set_num_dnts(struct wusbhc *wusbhc, u8 interval, u8 slots)
+{
+        struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+        struct wahc *wa = &hwahc->wa;
+
+        return usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
+                        WUSB_REQ_SET_NUM_DNTS,
+                        USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+                        interval << 8 | slots,
+                        wa->usb_iface->cur_altsetting->desc.bInterfaceNumber,
+                        NULL, 0, 1000 /* FIXME: arbitrary */);
+}
+
+/*
+ * Reset a WUSB host controller and wait for it to complete doing it.
+ *
+ * @usb_hcd:    Pointer to WUSB Host Controller instance.
+ *
+ */
+static int hwahc_op_reset(struct usb_hcd *usb_hcd)
+{
+        int result;
+        struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+        struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+        struct device *dev = &hwahc->wa.usb_iface->dev;
+
+        d_fnstart(4, dev, "(hwahc %p)\n", hwahc);
+        mutex_lock(&wusbhc->mutex);
+        wa_nep_disarm(&hwahc->wa);
+        result = __wa_set_feature(&hwahc->wa, WA_RESET);
+        if (result < 0) {
+                dev_err(dev, "error commanding HC to reset: %d\n", result);
+                goto error_unlock;
+        }
+        d_printf(3, dev, "reset: waiting for device to change state\n");
+        result = __wa_wait_status(&hwahc->wa, WA_STATUS_RESETTING, 0);
+        if (result < 0) {
+                dev_err(dev, "error waiting for HC to reset: %d\n", result);
+                goto error_unlock;
+        }
+error_unlock:
+        mutex_unlock(&wusbhc->mutex);
+        d_fnend(4, dev, "(hwahc %p) = %d\n", hwahc, result);
+        return result;
+}
+
+/*
+ * FIXME: break this function up
+ */
+static int hwahc_op_start(struct usb_hcd *usb_hcd)
+{
+        u8 addr;
+        int result;
+        struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+        struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+        struct device *dev = &hwahc->wa.usb_iface->dev;
+
+        /* Set up a Host Info WUSB Information Element */
+        d_fnstart(4, dev, "(hwahc %p)\n", hwahc);
+        result = -ENOSPC;
+        mutex_lock(&wusbhc->mutex);
+        /* Start the numbering from the top so that the bottom
+         * range of the unauth addr space is used for devices,
+         * the top for HCs; use 0xfe - RC# */
+        addr = wusb_cluster_id_get();
+        if (addr == 0)
+                goto error_cluster_id_get;
+        result = __hwahc_set_cluster_id(hwahc, addr);
+        if (result < 0)
+                goto error_set_cluster_id;
+
+        result = wa_nep_arm(&hwahc->wa, GFP_KERNEL);
+        if (result < 0) {
+                dev_err(dev, "cannot listen to notifications: %d\n", result);
+                goto error_stop;
+        }
+        usb_hcd->uses_new_polling = 1;
+        usb_hcd->poll_rh = 1;
+        usb_hcd->state = HC_STATE_RUNNING;
+        result = 0;
+out:
+        mutex_unlock(&wusbhc->mutex);
+        d_fnend(4, dev, "(hwahc %p) = %d\n", hwahc, result);
+        return result;
+
+error_stop:
+        __wa_stop(&hwahc->wa);
+error_set_cluster_id:
+        wusb_cluster_id_put(wusbhc->cluster_id);
+error_cluster_id_get:
+        goto out;
+
+}
+
+/*
+ * FIXME: break this function up
+ */
+static int __hwahc_op_wusbhc_start(struct wusbhc *wusbhc)
+{
+        int result;
+        struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+        struct device *dev = &hwahc->wa.usb_iface->dev;
+
+        /* Set up a Host Info WUSB Information Element */
+        d_fnstart(4, dev, "(hwahc %p)\n", hwahc);
+        result = -ENOSPC;
+
+        result = __wa_set_feature(&hwahc->wa, WA_ENABLE);
+        if (result < 0) {
+                dev_err(dev, "error commanding HC to start: %d\n", result);
+                goto error_stop;
+        }
+        result = __wa_wait_status(&hwahc->wa, WA_ENABLE, WA_ENABLE);
+        if (result < 0) {
+                dev_err(dev, "error waiting for HC to start: %d\n", result);
+                goto error_stop;
+        }
+        result = 0;
+out:
+        d_fnend(4, dev, "(hwahc %p) = %d\n", hwahc, result);
+        return result;
+
+error_stop:
+        result = __wa_clear_feature(&hwahc->wa, WA_ENABLE);
+        goto out;
+}
+
+static int hwahc_op_suspend(struct usb_hcd *usb_hcd, pm_message_t msg)
+{
+        struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+        struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+        dev_err(wusbhc->dev, "%s (%p [%p], 0x%lx) UNIMPLEMENTED\n", __func__,
+                usb_hcd, hwahc, *(unsigned long *) &msg);
+        return -ENOSYS;
+}
+
+static int hwahc_op_resume(struct usb_hcd *usb_hcd)
+{
+        struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+        struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+
+        dev_err(wusbhc->dev, "%s (%p [%p]) UNIMPLEMENTED\n", __func__,
+                usb_hcd, hwahc);
+        return -ENOSYS;
+}
+
+static void __hwahc_op_wusbhc_stop(struct wusbhc *wusbhc)
+{
+        int result;
+        struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+        struct device *dev = &hwahc->wa.usb_iface->dev;
+
+        d_fnstart(4, dev, "(hwahc %p)\n", hwahc);
+        /* Nothing for now */
+        d_fnend(4, dev, "(hwahc %p) = %d\n", hwahc, result);
+        return;
+}
+
+/*
+ * No need to abort pipes, as when this is called, all the children
+ * has been disconnected and that has done it [through
+ * usb_disable_interface() -> usb_disable_endpoint() ->
+ * hwahc_op_ep_disable() - >rpipe_ep_disable()].
+ */
+static void hwahc_op_stop(struct usb_hcd *usb_hcd)
+{
+        int result;
+        struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+        struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+        struct wahc *wa = &hwahc->wa;
+        struct device *dev = &wa->usb_iface->dev;
+
+        d_fnstart(4, dev, "(hwahc %p)\n", hwahc);
+        mutex_lock(&wusbhc->mutex);
+        wusbhc_stop(wusbhc);
+        wa_nep_disarm(&hwahc->wa);
+        result = __wa_stop(&hwahc->wa);
+        wusb_cluster_id_put(wusbhc->cluster_id);
+        mutex_unlock(&wusbhc->mutex);
+        d_fnend(4, dev, "(hwahc %p) = %d\n", hwahc, result);
+        return;
+}
+
+static int hwahc_op_get_frame_number(struct usb_hcd *usb_hcd)
+{
+        struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+        struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+
+        dev_err(wusbhc->dev, "%s (%p [%p]) UNIMPLEMENTED\n", __func__,
+                usb_hcd, hwahc);
+        return -ENOSYS;
+}
+
+static int hwahc_op_urb_enqueue(struct usb_hcd *usb_hcd, struct urb *urb,
+                                gfp_t gfp)
+{
+        struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+        struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+
+        return wa_urb_enqueue(&hwahc->wa, urb->ep, urb, gfp);
+}
+
+static int hwahc_op_urb_dequeue(struct usb_hcd *usb_hcd, struct urb *urb,
+                                int status)
+{
+        struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+        struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+
+        return wa_urb_dequeue(&hwahc->wa, urb);
+}
+
+/*
+ * Release resources allocated for an endpoint
+ *
+ * If there is an associated rpipe to this endpoint, go ahead and put it.
+ */
+static void hwahc_op_endpoint_disable(struct usb_hcd *usb_hcd,
+                                      struct usb_host_endpoint *ep)
+{
+        struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+        struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+
+        rpipe_ep_disable(&hwahc->wa, ep);
+}
+
+/*
+ * Set the UWB MAS allocation for the WUSB cluster
+ *
+ * @stream_index: stream to use (-1 for cancelling the allocation)
+ * @mas: mas bitmap to use
+ */
+static int __hwahc_op_bwa_set(struct wusbhc *wusbhc, s8 stream_index,
+                              const struct uwb_mas_bm *mas)
+{
+        int result;
+        struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+        struct wahc *wa = &hwahc->wa;
+        struct device *dev = &wa->usb_iface->dev;
+        u8 mas_le[UWB_NUM_MAS/8];
+
+        /* Set the stream index */
+        result = usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
+                        WUSB_REQ_SET_STREAM_IDX,
+                        USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+                        stream_index,
+                        wa->usb_iface->cur_altsetting->desc.bInterfaceNumber,
+                        NULL, 0, 1000 /* FIXME: arbitrary */);
+        if (result < 0) {
+                dev_err(dev, "Cannot set WUSB stream index: %d\n", result);
+                goto out;
+        }
+        uwb_mas_bm_copy_le(mas_le, mas);
+        /* Set the MAS allocation */
+        result = usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
+                        WUSB_REQ_SET_WUSB_MAS,
+                        USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+                        0, wa->usb_iface->cur_altsetting->desc.bInterfaceNumber,
+                        mas_le, 32, 1000 /* FIXME: arbitrary */);
+        if (result < 0)
+                dev_err(dev, "Cannot set WUSB MAS allocation: %d\n", result);
+out:
+        return result;
+}
+
+/*
+ * Add an IE to the host's MMC
+ *
+ * @interval:    See WUSB1.0[8.5.3.1]
+ * @repeat_cnt:  See WUSB1.0[8.5.3.1]
+ * @handle:      See WUSB1.0[8.5.3.1]
+ * @wuie:        Pointer to the header of the WUSB IE data to add.
+ *               MUST BE allocated in a kmalloc buffer (no stack or
+ *               vmalloc).
+ *
+ * NOTE: the format of the WUSB IEs for MMCs are different to the
+ *       normal MBOA MAC IEs (IE Id + Length in MBOA MAC vs. Length +
+ *       Id in WUSB IEs). Standards...you gotta love'em.
+ */
+static int __hwahc_op_mmcie_add(struct wusbhc *wusbhc, u8 interval,
+                                u8 repeat_cnt, u8 handle,
+                                struct wuie_hdr *wuie)
+{
+        struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+        struct wahc *wa = &hwahc->wa;
+        u8 iface_no = wa->usb_iface->cur_altsetting->desc.bInterfaceNumber;
+
+        return usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
+                        WUSB_REQ_ADD_MMC_IE,
+                        USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+                        interval << 8 | repeat_cnt,
+                        handle << 8 | iface_no,
+                        wuie, wuie->bLength, 1000 /* FIXME: arbitrary */);
+}
+
+/*
+ * Remove an IE to the host's MMC
+ *
+ * @handle:      See WUSB1.0[8.5.3.1]
+ */
+static int __hwahc_op_mmcie_rm(struct wusbhc *wusbhc, u8 handle)
+{
+        struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+        struct wahc *wa = &hwahc->wa;
+        u8 iface_no = wa->usb_iface->cur_altsetting->desc.bInterfaceNumber;
+        return usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
+                        WUSB_REQ_REMOVE_MMC_IE,
+                        USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+                        0, handle << 8 | iface_no,
+                        NULL, 0, 1000 /* FIXME: arbitrary */);
+}
+
+/*
+ * Update device information for a given fake port
+ *
+ * @port_idx: Fake port to which device is connected (wusbhc index, not
+ *            USB port number).
+ */
+static int __hwahc_op_dev_info_set(struct wusbhc *wusbhc,
+                                   struct wusb_dev *wusb_dev)
+{
+        struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+        struct wahc *wa = &hwahc->wa;
+        u8 iface_no = wa->usb_iface->cur_altsetting->desc.bInterfaceNumber;
+        struct hwa_dev_info *dev_info;
+        int ret;
+
+        /* fill out the Device Info buffer and send it */
+        dev_info = kzalloc(sizeof(struct hwa_dev_info), GFP_KERNEL);
+        if (!dev_info)
+                return -ENOMEM;
+        uwb_mas_bm_copy_le(dev_info->bmDeviceAvailability,
+                           &wusb_dev->availability);
+        dev_info->bDeviceAddress = wusb_dev->addr;
+
+        /*
+         * If the descriptors haven't been read yet, use a default PHY
+         * rate of 53.3 Mbit/s only.  The correct value will be used
+         * when this will be called again as part of the
+         * authentication process (which occurs after the descriptors
+         * have been read).
+         */
+        if (wusb_dev->wusb_cap_descr)
+                dev_info->wPHYRates = wusb_dev->wusb_cap_descr->wPHYRates;
+        else
+                dev_info->wPHYRates = cpu_to_le16(USB_WIRELESS_PHY_53);
+
+        ret = usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
+                        WUSB_REQ_SET_DEV_INFO,
+                        USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+                        0, wusb_dev->port_idx << 8 | iface_no,
+                        dev_info, sizeof(struct hwa_dev_info),
+                        1000 /* FIXME: arbitrary */);
+        kfree(dev_info);
+        return ret;
+}
+
+/*
+ * Set host's idea of which encryption (and key) method to use when
+ * talking to ad evice on a given port.
+ *
+ * If key is NULL, it means disable encryption for that "virtual port"
+ * (used when we disconnect).
+ */
+static int __hwahc_dev_set_key(struct wusbhc *wusbhc, u8 port_idx, u32 tkid,
+                               const void *key, size_t key_size,
+                               u8 key_idx)
+{
+        int result = -ENOMEM;
+        struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+        struct wahc *wa = &hwahc->wa;
+        u8 iface_no = wa->usb_iface->cur_altsetting->desc.bInterfaceNumber;
+        struct usb_key_descriptor *keyd;
+        size_t keyd_len;
+
+        keyd_len = sizeof(*keyd) + key_size;
+        keyd = kzalloc(keyd_len, GFP_KERNEL);
+        if (keyd == NULL)
+                return -ENOMEM;
+
+        keyd->bLength = keyd_len;
+        keyd->bDescriptorType = USB_DT_KEY;
+        keyd->tTKID[0] = (tkid >>  0) & 0xff;
+        keyd->tTKID[1] = (tkid >>  8) & 0xff;
+        keyd->tTKID[2] = (tkid >> 16) & 0xff;
+        memcpy(keyd->bKeyData, key, key_size);
+
+        result = usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
+                        USB_REQ_SET_DESCRIPTOR,
+                        USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+                        USB_DT_KEY << 8 | key_idx,
+                        port_idx << 8 | iface_no,
+                        keyd, keyd_len, 1000 /* FIXME: arbitrary */);
+
+        memset(keyd, 0, sizeof(*keyd)); /* clear keys etc. */
+        kfree(keyd);
+        return result;
+}
+
+/*
+ * Set host's idea of which encryption (and key) method to use when
+ * talking to ad evice on a given port.
+ *
+ * If key is NULL, it means disable encryption for that "virtual port"
+ * (used when we disconnect).
+ */
+static int __hwahc_op_set_ptk(struct wusbhc *wusbhc, u8 port_idx, u32 tkid,
+                              const void *key, size_t key_size)
+{
+        int result = -ENOMEM;
+        struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+        struct wahc *wa = &hwahc->wa;
+        u8 iface_no = wa->usb_iface->cur_altsetting->desc.bInterfaceNumber;
+        u8 encryption_value;
+
+        /* Tell the host which key to use to talk to the device */
+        if (key) {
+                u8 key_idx = wusb_key_index(0, WUSB_KEY_INDEX_TYPE_PTK,
+                                            WUSB_KEY_INDEX_ORIGINATOR_HOST);
+
+                result = __hwahc_dev_set_key(wusbhc, port_idx, tkid,
+                                             key, key_size, key_idx);
+                if (result < 0)
+                        goto error_set_key;
+                encryption_value = wusbhc->ccm1_etd->bEncryptionValue;
+        } else {
+                /* FIXME: this should come from wusbhc->etd[UNSECURE].value */
+                encryption_value = 0;
+        }
+
+        /* Set the encryption type for commmunicating with the device */
+        result = usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
+                        USB_REQ_SET_ENCRYPTION,
+                        USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+                        encryption_value, port_idx << 8 | iface_no,
+                        NULL, 0, 1000 /* FIXME: arbitrary */);
+        if (result < 0)
+                dev_err(wusbhc->dev, "Can't set host's WUSB encryption for "
+                        "port index %u to %s (value %d): %d\n", port_idx,
+                        wusb_et_name(wusbhc->ccm1_etd->bEncryptionType),
+                        wusbhc->ccm1_etd->bEncryptionValue, result);
+error_set_key:
+        return result;
+}
+
+/*
+ * Set host's GTK key
+ */
+static int __hwahc_op_set_gtk(struct wusbhc *wusbhc, u32 tkid,
+                              const void *key, size_t key_size)
+{
+        u8 key_idx = wusb_key_index(0, WUSB_KEY_INDEX_TYPE_GTK,
+                                    WUSB_KEY_INDEX_ORIGINATOR_HOST);
+
+        return __hwahc_dev_set_key(wusbhc, 0, tkid, key, key_size, key_idx);
+}
+
+/*
+ * Get the Wire Adapter class-specific descriptor
+ *
+ * NOTE: this descriptor comes with the big bundled configuration
+ *       descriptor that includes the interfaces' and endpoints', so
+ *       we just look for it in the cached copy kept by the USB stack.
+ *
+ * NOTE2: We convert LE fields to CPU order.
+ */
+static int wa_fill_descr(struct wahc *wa)
+{
+        int result;
+        struct device *dev = &wa->usb_iface->dev;
+        char *itr;
+        struct usb_device *usb_dev = wa->usb_dev;
+        struct usb_descriptor_header *hdr;
+        struct usb_wa_descriptor *wa_descr;
+        size_t itr_size, actconfig_idx;
+
+        actconfig_idx = (usb_dev->actconfig - usb_dev->config) /
+                        sizeof(usb_dev->config[0]);
+        itr = usb_dev->rawdescriptors[actconfig_idx];
+        itr_size = le16_to_cpu(usb_dev->actconfig->desc.wTotalLength);
+        while (itr_size >= sizeof(*hdr)) {
+                hdr = (struct usb_descriptor_header *) itr;
+                d_printf(3, dev, "Extra device descriptor: "
+                         "type %02x/%u bytes @ %zu (%zu left)\n",
+                         hdr->bDescriptorType, hdr->bLength,
+                         (itr - usb_dev->rawdescriptors[actconfig_idx]),
+                         itr_size);
+                if (hdr->bDescriptorType == USB_DT_WIRE_ADAPTER)
+                        goto found;
+                itr += hdr->bLength;
+                itr_size -= hdr->bLength;
+        }
+        dev_err(dev, "cannot find Wire Adapter Class descriptor\n");
+        return -ENODEV;
+
+found:
+        result = -EINVAL;
+        if (hdr->bLength > itr_size) {  /* is it available? */
+                dev_err(dev, "incomplete Wire Adapter Class descriptor "
+                        "(%zu bytes left, %u needed)\n",
+                        itr_size, hdr->bLength);
+                goto error;
+        }
+        if (hdr->bLength < sizeof(*wa->wa_descr)) {
+                dev_err(dev, "short Wire Adapter Class descriptor\n");
+                goto error;
+        }
+        wa->wa_descr = wa_descr = (struct usb_wa_descriptor *) hdr;
+        /* Make LE fields CPU order */
+        wa_descr->bcdWAVersion = le16_to_cpu(wa_descr->bcdWAVersion);
+        wa_descr->wNumRPipes = le16_to_cpu(wa_descr->wNumRPipes);
+        wa_descr->wRPipeMaxBlock = le16_to_cpu(wa_descr->wRPipeMaxBlock);
+        if (wa_descr->bcdWAVersion > 0x0100)
+                dev_warn(dev, "Wire Adapter v%d.%d newer than groked v1.0\n",
+                         wa_descr->bcdWAVersion & 0xff00 >> 8,
+                         wa_descr->bcdWAVersion & 0x00ff);
+        result = 0;
+error:
+        return result;
+}
+
+static struct hc_driver hwahc_hc_driver = {
+        .description = "hwa-hcd",
+        .product_desc = "Wireless USB HWA host controller",
+        .hcd_priv_size = sizeof(struct hwahc) - sizeof(struct usb_hcd),
+        .irq = NULL,                    /* FIXME */
+        .flags = HCD_USB2,              /* FIXME */
+        .reset = hwahc_op_reset,
+        .start = hwahc_op_start,
+        .pci_suspend = hwahc_op_suspend,
+        .pci_resume = hwahc_op_resume,
+        .stop = hwahc_op_stop,
+        .get_frame_number = hwahc_op_get_frame_number,
+        .urb_enqueue = hwahc_op_urb_enqueue,
+        .urb_dequeue = hwahc_op_urb_dequeue,
+        .endpoint_disable = hwahc_op_endpoint_disable,
+
+        .hub_status_data = wusbhc_rh_status_data,
+        .hub_control = wusbhc_rh_control,
+        .bus_suspend = wusbhc_rh_suspend,
+        .bus_resume = wusbhc_rh_resume,
+        .start_port_reset = wusbhc_rh_start_port_reset,
+};
+
+static int hwahc_security_create(struct hwahc *hwahc)
+{
+        int result;
+        struct wusbhc *wusbhc = &hwahc->wusbhc;
+        struct usb_device *usb_dev = hwahc->wa.usb_dev;
+        struct device *dev = &usb_dev->dev;
+        struct usb_security_descriptor *secd;
+        struct usb_encryption_descriptor *etd;
+        void *itr, *top;
+        size_t itr_size, needed, bytes;
+        u8 index;
+        char buf[64];
+
+        /* Find the host's security descriptors in the config descr bundle */
+        index = (usb_dev->actconfig - usb_dev->config) /
+                sizeof(usb_dev->config[0]);
+        itr = usb_dev->rawdescriptors[index];
+        itr_size = le16_to_cpu(usb_dev->actconfig->desc.wTotalLength);
+        top = itr + itr_size;
+        result = __usb_get_extra_descriptor(usb_dev->rawdescriptors[index],
+                        le16_to_cpu(usb_dev->actconfig->desc.wTotalLength),
+                        USB_DT_SECURITY, (void **) &secd);
+        if (result == -1) {
+                dev_warn(dev, "BUG? WUSB host has no security descriptors\n");
+                return 0;
+        }
+        needed = sizeof(*secd);
+        if (top - (void *)secd < needed) {
+                dev_err(dev, "BUG? Not enough data to process security "
+                        "descriptor header (%zu bytes left vs %zu needed)\n",
+                        top - (void *) secd, needed);
+                return 0;
+        }
+        needed = le16_to_cpu(secd->wTotalLength);
+        if (top - (void *)secd < needed) {
+                dev_err(dev, "BUG? Not enough data to process security "
+                        "descriptors (%zu bytes left vs %zu needed)\n",
+                        top - (void *) secd, needed);
+                return 0;
+        }
+        /* Walk over the sec descriptors and store CCM1's on wusbhc */
+        itr = (void *) secd + sizeof(*secd);
+        top = (void *) secd + le16_to_cpu(secd->wTotalLength);
+        index = 0;
+        bytes = 0;
+        while (itr < top) {
+                etd = itr;
+                if (top - itr < sizeof(*etd)) {
+                        dev_err(dev, "BUG: bad host security descriptor; "
+                                "not enough data (%zu vs %zu left)\n",
+                                top - itr, sizeof(*etd));
+                        break;
+                }
+                if (etd->bLength < sizeof(*etd)) {
+                        dev_err(dev, "BUG: bad host encryption descriptor; "
+                                "descriptor is too short "
+                                "(%zu vs %zu needed)\n",
+                                (size_t)etd->bLength, sizeof(*etd));
+                        break;
+                }
+                itr += etd->bLength;
+                bytes += snprintf(buf + bytes, sizeof(buf) - bytes,
+                                  "%s (0x%02x) ",
+                                  wusb_et_name(etd->bEncryptionType),
+                                  etd->bEncryptionValue);
+                wusbhc->ccm1_etd = etd;
+        }
+        dev_info(dev, "supported encryption types: %s\n", buf);
+        if (wusbhc->ccm1_etd == NULL) {
+                dev_err(dev, "E: host doesn't support CCM-1 crypto\n");
+                return 0;
+        }
+        /* Pretty print what we support */
+        return 0;
+}
+
+static void hwahc_security_release(struct hwahc *hwahc)
+{
+        /* nothing to do here so far... */
+}
+
+static int hwahc_create(struct hwahc *hwahc, struct usb_interface *iface)
+{
+        int result;
+        struct device *dev = &iface->dev;
+        struct wusbhc *wusbhc = &hwahc->wusbhc;
+        struct wahc *wa = &hwahc->wa;
+        struct usb_device *usb_dev = interface_to_usbdev(iface);
+
+        wa->usb_dev = usb_get_dev(usb_dev);     /* bind the USB device */
+        wa->usb_iface = usb_get_intf(iface);
+        wusbhc->dev = dev;
+        wusbhc->uwb_rc = uwb_rc_get_by_grandpa(iface->dev.parent);
+        if (wusbhc->uwb_rc == NULL) {
+                result = -ENODEV;
+                dev_err(dev, "Cannot get associated UWB Host Controller\n");
+                goto error_rc_get;
+        }
+        result = wa_fill_descr(wa);     /* Get the device descriptor */
+        if (result < 0)
+                goto error_fill_descriptor;
+        if (wa->wa_descr->bNumPorts > USB_MAXCHILDREN) {
+                dev_err(dev, "FIXME: USB_MAXCHILDREN too low for WUSB "
+                        "adapter (%u ports)\n", wa->wa_descr->bNumPorts);
+                wusbhc->ports_max = USB_MAXCHILDREN;
+        } else {
+                wusbhc->ports_max = wa->wa_descr->bNumPorts;
+        }
+        wusbhc->mmcies_max = wa->wa_descr->bNumMMCIEs;
+        wusbhc->start = __hwahc_op_wusbhc_start;
+        wusbhc->stop = __hwahc_op_wusbhc_stop;
+        wusbhc->mmcie_add = __hwahc_op_mmcie_add;
+        wusbhc->mmcie_rm = __hwahc_op_mmcie_rm;
+        wusbhc->dev_info_set = __hwahc_op_dev_info_set;
+        wusbhc->bwa_set = __hwahc_op_bwa_set;
+        wusbhc->set_num_dnts = __hwahc_op_set_num_dnts;
+        wusbhc->set_ptk = __hwahc_op_set_ptk;
+        wusbhc->set_gtk = __hwahc_op_set_gtk;
+        result = hwahc_security_create(hwahc);
+        if (result < 0) {
+                dev_err(dev, "Can't initialize security: %d\n", result);
+                goto error_security_create;
+        }
+        wa->wusb = wusbhc;      /* FIXME: ugly, need to fix */
+        result = wusbhc_create(&hwahc->wusbhc);
+        if (result < 0) {
+                dev_err(dev, "Can't create WUSB HC structures: %d\n", result);
+                goto error_wusbhc_create;
+        }
+        result = wa_create(&hwahc->wa, iface);
+        if (result < 0)
+                goto error_wa_create;
+        return 0;
+
+error_wa_create:
+        wusbhc_destroy(&hwahc->wusbhc);
+error_wusbhc_create:
+        /* WA Descr fill allocs no resources */
+error_security_create:
+error_fill_descriptor:
+        uwb_rc_put(wusbhc->uwb_rc);
+error_rc_get:
+        usb_put_intf(iface);
+        usb_put_dev(usb_dev);
+        return result;
+}
+
+static void hwahc_destroy(struct hwahc *hwahc)
+{
+        struct wusbhc *wusbhc = &hwahc->wusbhc;
+
+        d_fnstart(1, NULL, "(hwahc %p)\n", hwahc);
+        mutex_lock(&wusbhc->mutex);
+        __wa_destroy(&hwahc->wa);
+        wusbhc_destroy(&hwahc->wusbhc);
+        hwahc_security_release(hwahc);
+        hwahc->wusbhc.dev = NULL;
+        uwb_rc_put(wusbhc->uwb_rc);
+        usb_put_intf(hwahc->wa.usb_iface);
+        usb_put_dev(hwahc->wa.usb_dev);
+        mutex_unlock(&wusbhc->mutex);
+        d_fnend(1, NULL, "(hwahc %p) = void\n", hwahc);
+}
+
+static void hwahc_init(struct hwahc *hwahc)
+{
+        wa_init(&hwahc->wa);
+}
+
+static int hwahc_probe(struct usb_interface *usb_iface,
+                       const struct usb_device_id *id)
+{
+        int result;
+        struct usb_hcd *usb_hcd;
+        struct wusbhc *wusbhc;
+        struct hwahc *hwahc;
+        struct device *dev = &usb_iface->dev;
+
+        d_fnstart(4, dev, "(%p, %p)\n", usb_iface, id);
+        result = -ENOMEM;
+        usb_hcd = usb_create_hcd(&hwahc_hc_driver, &usb_iface->dev, "wusb-hwa");
+        if (usb_hcd == NULL) {
+                dev_err(dev, "unable to allocate instance\n");
+                goto error_alloc;
+        }
+        usb_hcd->wireless = 1;
+        usb_hcd->flags |= HCD_FLAG_SAW_IRQ;
+        wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+        hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+        hwahc_init(hwahc);
+        result = hwahc_create(hwahc, usb_iface);
+        if (result < 0) {
+                dev_err(dev, "Cannot initialize internals: %d\n", result);
+                goto error_hwahc_create;
+        }
+        result = usb_add_hcd(usb_hcd, 0, 0);
+        if (result < 0) {
+                dev_err(dev, "Cannot add HCD: %d\n", result);
+                goto error_add_hcd;
+        }
+        result = wusbhc_b_create(&hwahc->wusbhc);
+        if (result < 0) {
+                dev_err(dev, "Cannot setup phase B of WUSBHC: %d\n", result);
+                goto error_wusbhc_b_create;
+        }
+        d_fnend(4, dev, "(%p, %p) = 0\n", usb_iface, id);
+        return 0;
+
+error_wusbhc_b_create:
+        usb_remove_hcd(usb_hcd);
+error_add_hcd:
+        hwahc_destroy(hwahc);
+error_hwahc_create:
+        usb_put_hcd(usb_hcd);
+error_alloc:
+        d_fnend(4, dev, "(%p, %p) = %d\n", usb_iface, id, result);
+        return result;
+}
+
+static void hwahc_disconnect(struct usb_interface *usb_iface)
+{
+        struct usb_hcd *usb_hcd;
+        struct wusbhc *wusbhc;
+        struct hwahc *hwahc;
+
+        usb_hcd = usb_get_intfdata(usb_iface);
+        wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+        hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+
+        d_fnstart(1, NULL, "(hwahc %p [usb_iface %p])\n", hwahc, usb_iface);
+        wusbhc_b_destroy(&hwahc->wusbhc);
+        usb_remove_hcd(usb_hcd);
+        hwahc_destroy(hwahc);
+        usb_put_hcd(usb_hcd);
+        d_fnend(1, NULL, "(hwahc %p [usb_iface %p]) = void\n", hwahc,
+                usb_iface);
+}
+
+/** USB device ID's that we handle */
+static struct usb_device_id hwahc_id_table[] = {
+        /* FIXME: use class labels for this */
+        { USB_INTERFACE_INFO(0xe0, 0x02, 0x01), },
+        {},
+};
+MODULE_DEVICE_TABLE(usb, hwahc_id_table);
+
+static struct usb_driver hwahc_driver = {
+        .name =         "hwa-hc",
+        .probe =        hwahc_probe,
+        .disconnect =   hwahc_disconnect,
+        .id_table =     hwahc_id_table,
+};
+
+static int __init hwahc_driver_init(void)
+{
+        int result;
+        result = usb_register(&hwahc_driver);
+        if (result < 0) {
+                printk(KERN_ERR "WA-CDS: Cannot register USB driver: %d\n",
+                       result);
+                goto error_usb_register;
+        }
+        return 0;
+
+error_usb_register:
+        return result;
+
+}
+module_init(hwahc_driver_init);
+
+static void __exit hwahc_driver_exit(void)
+{
+        usb_deregister(&hwahc_driver);
+}
+module_exit(hwahc_driver_exit);
+
+
+MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
+MODULE_DESCRIPTION("Host Wired Adapter USB Host Control Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/usb/host/whci/Kbuild b/drivers/usb/host/whci/Kbuild
new file mode 100644
index 000000000000..26a3871ea0f9
--- /dev/null
+++ b/drivers/usb/host/whci/Kbuild
@@ -0,0 +1,11 @@
+obj-$(CONFIG_USB_WHCI_HCD) += whci-hcd.o
+
+whci-hcd-y := \
+        asl.o   \
+        hcd.o   \
+        hw.o    \
+        init.o  \
+        int.o   \
+        pzl.o   \
+        qset.o  \
+        wusb.o
diff --git a/drivers/usb/host/whci/asl.c b/drivers/usb/host/whci/asl.c
new file mode 100644
index 000000000000..4d7078e50572
--- /dev/null
+++ b/drivers/usb/host/whci/asl.c
@@ -0,0 +1,367 @@
+/*
+ * Wireless Host Controller (WHC) asynchronous schedule management.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/kernel.h>
+#include <linux/dma-mapping.h>
+#include <linux/uwb/umc.h>
+#include <linux/usb.h>
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+#include "../../wusbcore/wusbhc.h"
+
+#include "whcd.h"
+
+#if D_LOCAL >= 4
+static void dump_asl(struct whc *whc, const char *tag)
+{
+        struct device *dev = &whc->umc->dev;
+        struct whc_qset *qset;
+
+        d_printf(4, dev, "ASL %s\n", tag);
+
+        list_for_each_entry(qset, &whc->async_list, list_node) {
+                dump_qset(qset, dev);
+        }
+}
+#else
+static inline void dump_asl(struct whc *whc, const char *tag)
+{
+}
+#endif
+
+
+static void qset_get_next_prev(struct whc *whc, struct whc_qset *qset,
+                               struct whc_qset **next, struct whc_qset **prev)
+{
+        struct list_head *n, *p;
+
+        BUG_ON(list_empty(&whc->async_list));
+
+        n = qset->list_node.next;
+        if (n == &whc->async_list)
+                n = n->next;
+        p = qset->list_node.prev;
+        if (p == &whc->async_list)
+                p = p->prev;
+
+        *next = container_of(n, struct whc_qset, list_node);
+        *prev = container_of(p, struct whc_qset, list_node);
+
+}
+
+static void asl_qset_insert_begin(struct whc *whc, struct whc_qset *qset)
+{
+        list_move(&qset->list_node, &whc->async_list);
+        qset->in_sw_list = true;
+}
+
+static void asl_qset_insert(struct whc *whc, struct whc_qset *qset)
+{
+        struct whc_qset *next, *prev;
+
+        qset_clear(whc, qset);
+
+        /* Link into ASL. */
+        qset_get_next_prev(whc, qset, &next, &prev);
+        whc_qset_set_link_ptr(&qset->qh.link, next->qset_dma);
+        whc_qset_set_link_ptr(&prev->qh.link, qset->qset_dma);
+        qset->in_hw_list = true;
+}
+
+static void asl_qset_remove(struct whc *whc, struct whc_qset *qset)
+{
+        struct whc_qset *prev, *next;
+
+        qset_get_next_prev(whc, qset, &next, &prev);
+
+        list_move(&qset->list_node, &whc->async_removed_list);
+        qset->in_sw_list = false;
+
+        /*
+         * No more qsets in the ASL?  The caller must stop the ASL as
+         * it's no longer valid.
+         */
+        if (list_empty(&whc->async_list))
+                return;
+
+        /* Remove from ASL. */
+        whc_qset_set_link_ptr(&prev->qh.link, next->qset_dma);
+        qset->in_hw_list = false;
+}
+
+/**
+ * process_qset - process any recently inactivated or halted qTDs in a
+ * qset.
+ *
+ * After inactive qTDs are removed, new qTDs can be added if the
+ * urb queue still contains URBs.
+ *
+ * Returns any additional WUSBCMD bits for the ASL sync command (i.e.,
+ * WUSBCMD_ASYNC_QSET_RM if a halted qset was removed).
+ */
+static uint32_t process_qset(struct whc *whc, struct whc_qset *qset)
+{
+        enum whc_update update = 0;
+        uint32_t status = 0;
+
+        while (qset->ntds) {
+                struct whc_qtd *td;
+                int t;
+
+                t = qset->td_start;
+                td = &qset->qtd[qset->td_start];
+                status = le32_to_cpu(td->status);
+
+                /*
+                 * Nothing to do with a still active qTD.
+                 */
+                if (status & QTD_STS_ACTIVE)
+                        break;
+
+                if (status & QTD_STS_HALTED) {
+                        /* Ug, an error. */
+                        process_halted_qtd(whc, qset, td);
+                        goto done;
+                }
+
+                /* Mmm, a completed qTD. */
+                process_inactive_qtd(whc, qset, td);
+        }
+
+        update |= qset_add_qtds(whc, qset);
+
+done:
+        /*
+         * Remove this qset from the ASL if requested, but only if has
+         * no qTDs.
+         */
+        if (qset->remove && qset->ntds == 0) {
+                asl_qset_remove(whc, qset);
+                update |= WHC_UPDATE_REMOVED;
+        }
+        return update;
+}
+
+void asl_start(struct whc *whc)
+{
+        struct whc_qset *qset;
+
+        qset = list_first_entry(&whc->async_list, struct whc_qset, list_node);
+
+        le_writeq(qset->qset_dma | QH_LINK_NTDS(8), whc->base + WUSBASYNCLISTADDR);
+
+        whc_write_wusbcmd(whc, WUSBCMD_ASYNC_EN, WUSBCMD_ASYNC_EN);
+        whci_wait_for(&whc->umc->dev, whc->base + WUSBSTS,
+                      WUSBSTS_ASYNC_SCHED, WUSBSTS_ASYNC_SCHED,
+                      1000, "start ASL");
+}
+
+void asl_stop(struct whc *whc)
+{
+        whc_write_wusbcmd(whc, WUSBCMD_ASYNC_EN, 0);
+        whci_wait_for(&whc->umc->dev, whc->base + WUSBSTS,
+                      WUSBSTS_ASYNC_SCHED, 0,
+                      1000, "stop ASL");
+}
+
+void asl_update(struct whc *whc, uint32_t wusbcmd)
+{
+        whc_write_wusbcmd(whc, wusbcmd, wusbcmd);
+        wait_event(whc->async_list_wq,
+                   (le_readl(whc->base + WUSBCMD) & WUSBCMD_ASYNC_UPDATED) == 0);
+}
+
+/**
+ * scan_async_work - scan the ASL for qsets to process.
+ *
+ * Process each qset in the ASL in turn and then signal the WHC that
+ * the ASL has been updated.
+ *
+ * Then start, stop or update the asynchronous schedule as required.
+ */
+void scan_async_work(struct work_struct *work)
+{
+        struct whc *whc = container_of(work, struct whc, async_work);
+        struct whc_qset *qset, *t;
+        enum whc_update update = 0;
+
+        spin_lock_irq(&whc->lock);
+
+        dump_asl(whc, "before processing");
+
+        /*
+         * Transerve the software list backwards so new qsets can be
+         * safely inserted into the ASL without making it non-circular.
+         */
+        list_for_each_entry_safe_reverse(qset, t, &whc->async_list, list_node) {
+                if (!qset->in_hw_list) {
+                        asl_qset_insert(whc, qset);
+                        update |= WHC_UPDATE_ADDED;
+                }
+
+                update |= process_qset(whc, qset);
+        }
+
+        dump_asl(whc, "after processing");
+
+        spin_unlock_irq(&whc->lock);
+
+        if (update) {
+                uint32_t wusbcmd = WUSBCMD_ASYNC_UPDATED | WUSBCMD_ASYNC_SYNCED_DB;
+                if (update & WHC_UPDATE_REMOVED)
+                        wusbcmd |= WUSBCMD_ASYNC_QSET_RM;
+                asl_update(whc, wusbcmd);
+        }
+
+        /*
+         * Now that the ASL is updated, complete the removal of any
+         * removed qsets.
+         */
+        spin_lock(&whc->lock);
+
+        list_for_each_entry_safe(qset, t, &whc->async_removed_list, list_node) {
+                qset_remove_complete(whc, qset);
+        }
+
+        spin_unlock(&whc->lock);
+}
+
+/**
+ * asl_urb_enqueue - queue an URB onto the asynchronous list (ASL).
+ * @whc: the WHCI host controller
+ * @urb: the URB to enqueue
+ * @mem_flags: flags for any memory allocations
+ *
+ * The qset for the endpoint is obtained and the urb queued on to it.
+ *
+ * Work is scheduled to update the hardware's view of the ASL.
+ */
+int asl_urb_enqueue(struct whc *whc, struct urb *urb, gfp_t mem_flags)
+{
+        struct whc_qset *qset;
+        int err;
+        unsigned long flags;
+
+        spin_lock_irqsave(&whc->lock, flags);
+
+        qset = get_qset(whc, urb, GFP_ATOMIC);
+        if (qset == NULL)
+                err = -ENOMEM;
+        else
+                err = qset_add_urb(whc, qset, urb, GFP_ATOMIC);
+        if (!err) {
+                usb_hcd_link_urb_to_ep(&whc->wusbhc.usb_hcd, urb);
+                if (!qset->in_sw_list)
+                        asl_qset_insert_begin(whc, qset);
+        }
+
+        spin_unlock_irqrestore(&whc->lock, flags);
+
+        if (!err)
+                queue_work(whc->workqueue, &whc->async_work);
+
+        return 0;
+}
+
+/**
+ * asl_urb_dequeue - remove an URB (qset) from the async list.
+ * @whc: the WHCI host controller
+ * @urb: the URB to dequeue
+ * @status: the current status of the URB
+ *
+ * URBs that do yet have qTDs can simply be removed from the software
+ * queue, otherwise the qset must be removed from the ASL so the qTDs
+ * can be removed.
+ */
+int asl_urb_dequeue(struct whc *whc, struct urb *urb, int status)
+{
+        struct whc_urb *wurb = urb->hcpriv;
+        struct whc_qset *qset = wurb->qset;
+        struct whc_std *std, *t;
+        int ret;
+        unsigned long flags;
+
+        spin_lock_irqsave(&whc->lock, flags);
+
+        ret = usb_hcd_check_unlink_urb(&whc->wusbhc.usb_hcd, urb, status);
+        if (ret < 0)
+                goto out;
+
+        list_for_each_entry_safe(std, t, &qset->stds, list_node) {
+                if (std->urb == urb)
+                        qset_free_std(whc, std);
+                else
+                        std->qtd = NULL; /* so this std is re-added when the qset is */
+        }
+
+        asl_qset_remove(whc, qset);
+        wurb->status = status;
+        wurb->is_async = true;
+        queue_work(whc->workqueue, &wurb->dequeue_work);
+
+out:
+        spin_unlock_irqrestore(&whc->lock, flags);
+
+        return ret;
+}
+
+/**
+ * asl_qset_delete - delete a qset from the ASL
+ */
+void asl_qset_delete(struct whc *whc, struct whc_qset *qset)
+{
+        qset->remove = 1;
+        queue_work(whc->workqueue, &whc->async_work);
+        qset_delete(whc, qset);
+}
+
+/**
+ * asl_init - initialize the asynchronous schedule list
+ *
+ * A dummy qset with no qTDs is added to the ASL to simplify removing
+ * qsets (no need to stop the ASL when the last qset is removed).
+ */
+int asl_init(struct whc *whc)
+{
+        struct whc_qset *qset;
+
+        qset = qset_alloc(whc, GFP_KERNEL);
+        if (qset == NULL)
+                return -ENOMEM;
+
+        asl_qset_insert_begin(whc, qset);
+        asl_qset_insert(whc, qset);
+
+        return 0;
+}
+
+/**
+ * asl_clean_up - free ASL resources
+ *
+ * The ASL is stopped and empty except for the dummy qset.
+ */
+void asl_clean_up(struct whc *whc)
+{
+        struct whc_qset *qset;
+
+        if (!list_empty(&whc->async_list)) {
+                qset = list_first_entry(&whc->async_list, struct whc_qset, list_node);
+                list_del(&qset->list_node);
+                qset_free(whc, qset);
+        }
+}
diff --git a/drivers/usb/host/whci/hcd.c b/drivers/usb/host/whci/hcd.c
new file mode 100644
index 000000000000..ef3ad4dca945
--- /dev/null
+++ b/drivers/usb/host/whci/hcd.c
@@ -0,0 +1,339 @@
+/*
+ * Wireless Host Controller (WHC) driver.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/version.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/uwb/umc.h>
+
+#include "../../wusbcore/wusbhc.h"
+
+#include "whcd.h"
+
+/*
+ * One time initialization.
+ *
+ * Nothing to do here.
+ */
+static int whc_reset(struct usb_hcd *usb_hcd)
+{
+        return 0;
+}
+
+/*
+ * Start the wireless host controller.
+ *
+ * Start device notification.
+ *
+ * Put hc into run state, set DNTS parameters.
+ */
+static int whc_start(struct usb_hcd *usb_hcd)
+{
+        struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+        struct whc *whc = wusbhc_to_whc(wusbhc);
+        u8 bcid;
+        int ret;
+
+        mutex_lock(&wusbhc->mutex);
+
+        le_writel(WUSBINTR_GEN_CMD_DONE
+                  | WUSBINTR_HOST_ERR
+                  | WUSBINTR_ASYNC_SCHED_SYNCED
+                  | WUSBINTR_DNTS_INT
+                  | WUSBINTR_ERR_INT
+                  | WUSBINTR_INT,
+                  whc->base + WUSBINTR);
+
+        /* set cluster ID */
+        bcid = wusb_cluster_id_get();
+        ret = whc_set_cluster_id(whc, bcid);
+        if (ret < 0)
+                goto out;
+        wusbhc->cluster_id = bcid;
+
+        /* start HC */
+        whc_write_wusbcmd(whc, WUSBCMD_RUN, WUSBCMD_RUN);
+
+        usb_hcd->uses_new_polling = 1;
+        usb_hcd->poll_rh = 1;
+        usb_hcd->state = HC_STATE_RUNNING;
+
+out:
+        mutex_unlock(&wusbhc->mutex);
+        return ret;
+}
+
+
+/*
+ * Stop the wireless host controller.
+ *
+ * Stop device notification.
+ *
+ * Wait for pending transfer to stop? Put hc into stop state?
+ */
+static void whc_stop(struct usb_hcd *usb_hcd)
+{
+        struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+        struct whc *whc = wusbhc_to_whc(wusbhc);
+
+        mutex_lock(&wusbhc->mutex);
+
+        wusbhc_stop(wusbhc);
+
+        /* stop HC */
+        le_writel(0, whc->base + WUSBINTR);
+        whc_write_wusbcmd(whc, WUSBCMD_RUN, 0);
+        whci_wait_for(&whc->umc->dev, whc->base + WUSBSTS,
+                      WUSBSTS_HCHALTED, WUSBSTS_HCHALTED,
+                      100, "HC to halt");
+
+        wusb_cluster_id_put(wusbhc->cluster_id);
+
+        mutex_unlock(&wusbhc->mutex);
+}
+
+static int whc_get_frame_number(struct usb_hcd *usb_hcd)
+{
+        /* Frame numbers are not applicable to WUSB. */
+        return -ENOSYS;
+}
+
+
+/*
+ * Queue an URB to the ASL or PZL
+ */
+static int whc_urb_enqueue(struct usb_hcd *usb_hcd, struct urb *urb,
+                           gfp_t mem_flags)
+{
+        struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+        struct whc *whc = wusbhc_to_whc(wusbhc);
+        int ret;
+
+        switch (usb_pipetype(urb->pipe)) {
+        case PIPE_INTERRUPT:
+                ret = pzl_urb_enqueue(whc, urb, mem_flags);
+                break;
+        case PIPE_ISOCHRONOUS:
+                dev_err(&whc->umc->dev, "isochronous transfers unsupported\n");
+                ret = -ENOTSUPP;
+                break;
+        case PIPE_CONTROL:
+        case PIPE_BULK:
+        default:
+                ret = asl_urb_enqueue(whc, urb, mem_flags);
+                break;
+        };
+
+        return ret;
+}
+
+/*
+ * Remove a queued URB from the ASL or PZL.
+ */
+static int whc_urb_dequeue(struct usb_hcd *usb_hcd, struct urb *urb, int status)
+{
+        struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+        struct whc *whc = wusbhc_to_whc(wusbhc);
+        int ret;
+
+        switch (usb_pipetype(urb->pipe)) {
+        case PIPE_INTERRUPT:
+                ret = pzl_urb_dequeue(whc, urb, status);
+                break;
+        case PIPE_ISOCHRONOUS:
+                ret = -ENOTSUPP;
+                break;
+        case PIPE_CONTROL:
+        case PIPE_BULK:
+        default:
+                ret = asl_urb_dequeue(whc, urb, status);
+                break;
+        };
+
+        return ret;
+}
+
+/*
+ * Wait for all URBs to the endpoint to be completed, then delete the
+ * qset.
+ */
+static void whc_endpoint_disable(struct usb_hcd *usb_hcd,
+                                 struct usb_host_endpoint *ep)
+{
+        struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+        struct whc *whc = wusbhc_to_whc(wusbhc);
+        struct whc_qset *qset;
+
+        qset = ep->hcpriv;
+        if (qset) {
+                ep->hcpriv = NULL;
+                if (usb_endpoint_xfer_bulk(&ep->desc)
+                    || usb_endpoint_xfer_control(&ep->desc))
+                        asl_qset_delete(whc, qset);
+                else
+                        pzl_qset_delete(whc, qset);
+        }
+}
+
+static struct hc_driver whc_hc_driver = {
+        .description = "whci-hcd",
+        .product_desc = "Wireless host controller",
+        .hcd_priv_size = sizeof(struct whc) - sizeof(struct usb_hcd),
+        .irq = whc_int_handler,
+        .flags = HCD_USB2,
+
+        .reset = whc_reset,
+        .start = whc_start,
+        .stop = whc_stop,
+        .get_frame_number = whc_get_frame_number,
+        .urb_enqueue = whc_urb_enqueue,
+        .urb_dequeue = whc_urb_dequeue,
+        .endpoint_disable = whc_endpoint_disable,
+
+        .hub_status_data = wusbhc_rh_status_data,
+        .hub_control = wusbhc_rh_control,
+        .bus_suspend = wusbhc_rh_suspend,
+        .bus_resume = wusbhc_rh_resume,
+        .start_port_reset = wusbhc_rh_start_port_reset,
+};
+
+static int whc_probe(struct umc_dev *umc)
+{
+        int ret = -ENOMEM;
+        struct usb_hcd *usb_hcd;
+        struct wusbhc *wusbhc = NULL;
+        struct whc *whc = NULL;
+        struct device *dev = &umc->dev;
+
+        usb_hcd = usb_create_hcd(&whc_hc_driver, dev, "whci");
+        if (usb_hcd == NULL) {
+                dev_err(dev, "unable to create hcd\n");
+                goto error;
+        }
+
+        usb_hcd->wireless = 1;
+
+        wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+        whc = wusbhc_to_whc(wusbhc);
+        whc->umc = umc;
+
+        ret = whc_init(whc);
+        if (ret)
+                goto error;
+
+        wusbhc->dev = dev;
+        wusbhc->uwb_rc = uwb_rc_get_by_grandpa(umc->dev.parent);
+        if (!wusbhc->uwb_rc) {
+                ret = -ENODEV;
+                dev_err(dev, "cannot get radio controller\n");
+                goto error;
+        }
+
+        if (whc->n_devices > USB_MAXCHILDREN) {
+                dev_warn(dev, "USB_MAXCHILDREN too low for WUSB adapter (%u ports)\n",
+                         whc->n_devices);
+                wusbhc->ports_max = USB_MAXCHILDREN;
+        } else
+                wusbhc->ports_max = whc->n_devices;
+        wusbhc->mmcies_max      = whc->n_mmc_ies;
+        wusbhc->start           = whc_wusbhc_start;
+        wusbhc->stop            = whc_wusbhc_stop;
+        wusbhc->mmcie_add       = whc_mmcie_add;
+        wusbhc->mmcie_rm        = whc_mmcie_rm;
+        wusbhc->dev_info_set    = whc_dev_info_set;
+        wusbhc->bwa_set         = whc_bwa_set;
+        wusbhc->set_num_dnts    = whc_set_num_dnts;
+        wusbhc->set_ptk         = whc_set_ptk;
+        wusbhc->set_gtk         = whc_set_gtk;
+
+        ret = wusbhc_create(wusbhc);
+        if (ret)
+                goto error_wusbhc_create;
+
+        ret = usb_add_hcd(usb_hcd, whc->umc->irq, IRQF_SHARED);
+        if (ret) {
+                dev_err(dev, "cannot add HCD: %d\n", ret);
+                goto error_usb_add_hcd;
+        }
+
+        ret = wusbhc_b_create(wusbhc);
+        if (ret) {
+                dev_err(dev, "WUSBHC phase B setup failed: %d\n", ret);
+                goto error_wusbhc_b_create;
+        }
+
+        return 0;
+
+error_wusbhc_b_create:
+        usb_remove_hcd(usb_hcd);
+error_usb_add_hcd:
+        wusbhc_destroy(wusbhc);
+error_wusbhc_create:
+        uwb_rc_put(wusbhc->uwb_rc);
+error:
+        whc_clean_up(whc);
+        if (usb_hcd)
+                usb_put_hcd(usb_hcd);
+        return ret;
+}
+
+
+static void whc_remove(struct umc_dev *umc)
+{
+        struct usb_hcd *usb_hcd = dev_get_drvdata(&umc->dev);
+        struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+        struct whc *whc = wusbhc_to_whc(wusbhc);
+
+        if (usb_hcd) {
+                wusbhc_b_destroy(wusbhc);
+                usb_remove_hcd(usb_hcd);
+                wusbhc_destroy(wusbhc);
+                uwb_rc_put(wusbhc->uwb_rc);
+                whc_clean_up(whc);
+                usb_put_hcd(usb_hcd);
+        }
+}
+
+static struct umc_driver whci_hc_driver = {
+        .name =         "whci-hcd",
+        .cap_id =       UMC_CAP_ID_WHCI_WUSB_HC,
+        .probe =        whc_probe,
+        .remove =       whc_remove,
+};
+
+static int __init whci_hc_driver_init(void)
+{
+        return umc_driver_register(&whci_hc_driver);
+}
+module_init(whci_hc_driver_init);
+
+static void __exit whci_hc_driver_exit(void)
+{
+        umc_driver_unregister(&whci_hc_driver);
+}
+module_exit(whci_hc_driver_exit);
+
+/* PCI device ID's that we handle (so it gets loaded) */
+static struct pci_device_id whci_hcd_id_table[] = {
+        { PCI_DEVICE_CLASS(PCI_CLASS_WIRELESS_WHCI, ~0) },
+        { /* empty last entry */ }
+};
+MODULE_DEVICE_TABLE(pci, whci_hcd_id_table);
+
+MODULE_DESCRIPTION("WHCI Wireless USB host controller driver");
+MODULE_AUTHOR("Cambridge Silicon Radio Ltd.");
+MODULE_LICENSE("GPL");
diff --git a/drivers/usb/host/whci/hw.c b/drivers/usb/host/whci/hw.c
new file mode 100644
index 000000000000..ac86e59c1225
--- /dev/null
+++ b/drivers/usb/host/whci/hw.c
@@ -0,0 +1,87 @@
+/*
+ * Wireless Host Controller (WHC) hardware access helpers.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/kernel.h>
+#include <linux/dma-mapping.h>
+#include <linux/uwb/umc.h>
+
+#include "../../wusbcore/wusbhc.h"
+
+#include "whcd.h"
+
+void whc_write_wusbcmd(struct whc *whc, u32 mask, u32 val)
+{
+        unsigned long flags;
+        u32 cmd;
+
+        spin_lock_irqsave(&whc->lock, flags);
+
+        cmd = le_readl(whc->base + WUSBCMD);
+        cmd = (cmd & ~mask) | val;
+        le_writel(cmd, whc->base + WUSBCMD);
+
+        spin_unlock_irqrestore(&whc->lock, flags);
+}
+
+/**
+ * whc_do_gencmd - start a generic command via the WUSBGENCMDSTS register
+ * @whc:    the WHCI HC
+ * @cmd:    command to start.
+ * @params: parameters for the command (the WUSBGENCMDPARAMS register value).
+ * @addr:   pointer to any data for the command (may be NULL).
+ * @len:    length of the data (if any).
+ */
+int whc_do_gencmd(struct whc *whc, u32 cmd, u32 params, void *addr, size_t len)
+{
+        unsigned long flags;
+        dma_addr_t dma_addr;
+        int t;
+
+        mutex_lock(&whc->mutex);
+
+        /* Wait for previous command to complete. */
+        t = wait_event_timeout(whc->cmd_wq,
+                               (le_readl(whc->base + WUSBGENCMDSTS) & WUSBGENCMDSTS_ACTIVE) == 0,
+                               WHC_GENCMD_TIMEOUT_MS);
+        if (t == 0) {
+                dev_err(&whc->umc->dev, "generic command timeout (%04x/%04x)\n",
+                        le_readl(whc->base + WUSBGENCMDSTS),
+                        le_readl(whc->base + WUSBGENCMDPARAMS));
+                return -ETIMEDOUT;
+        }
+
+        if (addr) {
+                memcpy(whc->gen_cmd_buf, addr, len);
+                dma_addr = whc->gen_cmd_buf_dma;
+        } else
+                dma_addr = 0;
+
+        /* Poke registers to start cmd. */
+        spin_lock_irqsave(&whc->lock, flags);
+
+        le_writel(params, whc->base + WUSBGENCMDPARAMS);
+        le_writeq(dma_addr, whc->base + WUSBGENADDR);
+
+        le_writel(WUSBGENCMDSTS_ACTIVE | WUSBGENCMDSTS_IOC | cmd,
+                  whc->base + WUSBGENCMDSTS);
+
+        spin_unlock_irqrestore(&whc->lock, flags);
+
+        mutex_unlock(&whc->mutex);
+
+        return 0;
+}
diff --git a/drivers/usb/host/whci/init.c b/drivers/usb/host/whci/init.c
new file mode 100644
index 000000000000..34a783cb0133
--- /dev/null
+++ b/drivers/usb/host/whci/init.c
@@ -0,0 +1,188 @@
+/*
+ * Wireless Host Controller (WHC) initialization.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/kernel.h>
+#include <linux/dma-mapping.h>
+#include <linux/uwb/umc.h>
+
+#include "../../wusbcore/wusbhc.h"
+
+#include "whcd.h"
+
+/*
+ * Reset the host controller.
+ */
+static void whc_hw_reset(struct whc *whc)
+{
+        le_writel(WUSBCMD_WHCRESET, whc->base + WUSBCMD);
+        whci_wait_for(&whc->umc->dev, whc->base + WUSBCMD, WUSBCMD_WHCRESET, 0,
+                      100, "reset");
+}
+
+static void whc_hw_init_di_buf(struct whc *whc)
+{
+        int d;
+
+        /* Disable all entries in the Device Information buffer. */
+        for (d = 0; d < whc->n_devices; d++)
+                whc->di_buf[d].addr_sec_info = WHC_DI_DISABLE;
+
+        le_writeq(whc->di_buf_dma, whc->base + WUSBDEVICEINFOADDR);
+}
+
+static void whc_hw_init_dn_buf(struct whc *whc)
+{
+        /* Clear the Device Notification buffer to ensure the V (valid)
+         * bits are clear.  */
+        memset(whc->dn_buf, 0, 4096);
+
+        le_writeq(whc->dn_buf_dma, whc->base + WUSBDNTSBUFADDR);
+}
+
+int whc_init(struct whc *whc)
+{
+        u32 whcsparams;
+        int ret, i;
+        resource_size_t start, len;
+
+        spin_lock_init(&whc->lock);
+        mutex_init(&whc->mutex);
+        init_waitqueue_head(&whc->cmd_wq);
+        init_waitqueue_head(&whc->async_list_wq);
+        init_waitqueue_head(&whc->periodic_list_wq);
+        whc->workqueue = create_singlethread_workqueue(dev_name(&whc->umc->dev));
+        if (whc->workqueue == NULL) {
+                ret = -ENOMEM;
+                goto error;
+        }
+        INIT_WORK(&whc->dn_work, whc_dn_work);
+
+        INIT_WORK(&whc->async_work, scan_async_work);
+        INIT_LIST_HEAD(&whc->async_list);
+        INIT_LIST_HEAD(&whc->async_removed_list);
+
+        INIT_WORK(&whc->periodic_work, scan_periodic_work);
+        for (i = 0; i < 5; i++)
+                INIT_LIST_HEAD(&whc->periodic_list[i]);
+        INIT_LIST_HEAD(&whc->periodic_removed_list);
+
+        /* Map HC registers. */
+        start = whc->umc->resource.start;
+        len   = whc->umc->resource.end - start + 1;
+        if (!request_mem_region(start, len, "whci-hc")) {
+                dev_err(&whc->umc->dev, "can't request HC region\n");
+                ret = -EBUSY;
+                goto error;
+        }
+        whc->base_phys = start;
+        whc->base = ioremap(start, len);
+        if (!whc->base) {
+                dev_err(&whc->umc->dev, "ioremap\n");
+                ret = -ENOMEM;
+                goto error;
+        }
+
+        whc_hw_reset(whc);
+
+        /* Read maximum number of devices, keys and MMC IEs. */
+        whcsparams = le_readl(whc->base + WHCSPARAMS);
+        whc->n_devices = WHCSPARAMS_TO_N_DEVICES(whcsparams);
+        whc->n_keys    = WHCSPARAMS_TO_N_KEYS(whcsparams);
+        whc->n_mmc_ies = WHCSPARAMS_TO_N_MMC_IES(whcsparams);
+
+        dev_dbg(&whc->umc->dev, "N_DEVICES = %d, N_KEYS = %d, N_MMC_IES = %d\n",
+                whc->n_devices, whc->n_keys, whc->n_mmc_ies);
+
+        whc->qset_pool = dma_pool_create("qset", &whc->umc->dev,
+                                         sizeof(struct whc_qset), 64, 0);
+        if (whc->qset_pool == NULL) {
+                ret = -ENOMEM;
+                goto error;
+        }
+
+        ret = asl_init(whc);
+        if (ret < 0)
+                goto error;
+        ret = pzl_init(whc);
+        if (ret < 0)
+                goto error;
+
+        /* Allocate and initialize a buffer for generic commands, the
+           Device Information buffer, and the Device Notification
+           buffer. */
+
+        whc->gen_cmd_buf = dma_alloc_coherent(&whc->umc->dev, WHC_GEN_CMD_DATA_LEN,
+                                              &whc->gen_cmd_buf_dma, GFP_KERNEL);
+        if (whc->gen_cmd_buf == NULL) {
+                ret = -ENOMEM;
+                goto error;
+        }
+
+        whc->dn_buf = dma_alloc_coherent(&whc->umc->dev,
+                                         sizeof(struct dn_buf_entry) * WHC_N_DN_ENTRIES,
+                                         &whc->dn_buf_dma, GFP_KERNEL);
+        if (!whc->dn_buf) {
+                ret = -ENOMEM;
+                goto error;
+        }
+        whc_hw_init_dn_buf(whc);
+
+        whc->di_buf = dma_alloc_coherent(&whc->umc->dev,
+                                         sizeof(struct di_buf_entry) * whc->n_devices,
+                                         &whc->di_buf_dma, GFP_KERNEL);
+        if (!whc->di_buf) {
+                ret = -ENOMEM;
+                goto error;
+        }
+        whc_hw_init_di_buf(whc);
+
+        return 0;
+
+error:
+        whc_clean_up(whc);
+        return ret;
+}
+
+void whc_clean_up(struct whc *whc)
+{
+        resource_size_t len;
+
+        if (whc->di_buf)
+                dma_free_coherent(&whc->umc->dev, sizeof(struct di_buf_entry) * whc->n_devices,
+                                  whc->di_buf, whc->di_buf_dma);
+        if (whc->dn_buf)
+                dma_free_coherent(&whc->umc->dev, sizeof(struct dn_buf_entry) * WHC_N_DN_ENTRIES,
+                                  whc->dn_buf, whc->dn_buf_dma);
+        if (whc->gen_cmd_buf)
+                dma_free_coherent(&whc->umc->dev, WHC_GEN_CMD_DATA_LEN,
+                                  whc->gen_cmd_buf, whc->gen_cmd_buf_dma);
+
+        pzl_clean_up(whc);
+        asl_clean_up(whc);
+
+        if (whc->qset_pool)
+                dma_pool_destroy(whc->qset_pool);
+
+        len   = whc->umc->resource.end - whc->umc->resource.start + 1;
+        if (whc->base)
+                iounmap(whc->base);
+        if (whc->base_phys)
+                release_mem_region(whc->base_phys, len);
+
+        if (whc->workqueue)
+                destroy_workqueue(whc->workqueue);
+}
diff --git a/drivers/usb/host/whci/int.c b/drivers/usb/host/whci/int.c
new file mode 100644
index 000000000000..fce01174aa9b
--- /dev/null
+++ b/drivers/usb/host/whci/int.c
@@ -0,0 +1,95 @@
+/*
+ * Wireless Host Controller (WHC) interrupt handling.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/version.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/uwb/umc.h>
+
+#include "../../wusbcore/wusbhc.h"
+
+#include "whcd.h"
+
+static void transfer_done(struct whc *whc)
+{
+        queue_work(whc->workqueue, &whc->async_work);
+        queue_work(whc->workqueue, &whc->periodic_work);
+}
+
+irqreturn_t whc_int_handler(struct usb_hcd *hcd)
+{
+        struct wusbhc *wusbhc = usb_hcd_to_wusbhc(hcd);
+        struct whc *whc = wusbhc_to_whc(wusbhc);
+        u32 sts;
+
+        sts = le_readl(whc->base + WUSBSTS);
+        if (!(sts & WUSBSTS_INT_MASK))
+                return IRQ_NONE;
+        le_writel(sts & WUSBSTS_INT_MASK, whc->base + WUSBSTS);
+
+        if (sts & WUSBSTS_GEN_CMD_DONE)
+                wake_up(&whc->cmd_wq);
+
+        if (sts & WUSBSTS_HOST_ERR)
+                dev_err(&whc->umc->dev, "FIXME: host system error\n");
+
+        if (sts & WUSBSTS_ASYNC_SCHED_SYNCED)
+                wake_up(&whc->async_list_wq);
+
+        if (sts & WUSBSTS_PERIODIC_SCHED_SYNCED)
+                wake_up(&whc->periodic_list_wq);
+
+        if (sts & WUSBSTS_DNTS_INT)
+                queue_work(whc->workqueue, &whc->dn_work);
+
+        /*
+         * A transfer completed (see [WHCI] section 4.7.1.2 for when
+         * this occurs).
+         */
+        if (sts & (WUSBSTS_INT | WUSBSTS_ERR_INT))
+                transfer_done(whc);
+
+        return IRQ_HANDLED;
+}
+
+static int process_dn_buf(struct whc *whc)
+{
+        struct wusbhc *wusbhc = &whc->wusbhc;
+        struct dn_buf_entry *dn;
+        int processed = 0;
+
+        for (dn = whc->dn_buf; dn < whc->dn_buf + WHC_N_DN_ENTRIES; dn++) {
+                if (dn->status & WHC_DN_STATUS_VALID) {
+                        wusbhc_handle_dn(wusbhc, dn->src_addr,
+                                         (struct wusb_dn_hdr *)dn->dn_data,
+                                         dn->msg_size);
+                        dn->status &= ~WHC_DN_STATUS_VALID;
+                        processed++;
+                }
+        }
+        return processed;
+}
+
+void whc_dn_work(struct work_struct *work)
+{
+        struct whc *whc = container_of(work, struct whc, dn_work);
+        int processed;
+
+        do {
+                processed = process_dn_buf(whc);
+        } while (processed);
+}
diff --git a/drivers/usb/host/whci/pzl.c b/drivers/usb/host/whci/pzl.c
new file mode 100644
index 000000000000..8d62df0c330b
--- /dev/null
+++ b/drivers/usb/host/whci/pzl.c
@@ -0,0 +1,398 @@
+/*
+ * Wireless Host Controller (WHC) periodic schedule management.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/kernel.h>
+#include <linux/dma-mapping.h>
+#include <linux/uwb/umc.h>
+#include <linux/usb.h>
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+#include "../../wusbcore/wusbhc.h"
+
+#include "whcd.h"
+
+#if D_LOCAL >= 4
+static void dump_pzl(struct whc *whc, const char *tag)
+{
+        struct device *dev = &whc->umc->dev;
+        struct whc_qset *qset;
+        int period = 0;
+
+        d_printf(4, dev, "PZL %s\n", tag);
+
+        for (period = 0; period < 5; period++) {
+                d_printf(4, dev, "Period %d\n", period);
+                list_for_each_entry(qset, &whc->periodic_list[period], list_node) {
+                        dump_qset(qset, dev);
+                }
+        }
+}
+#else
+static inline void dump_pzl(struct whc *whc, const char *tag)
+{
+}
+#endif
+
+static void update_pzl_pointers(struct whc *whc, int period, u64 addr)
+{
+        switch (period) {
+        case 0:
+                whc_qset_set_link_ptr(&whc->pz_list[0], addr);
+                whc_qset_set_link_ptr(&whc->pz_list[2], addr);
+                whc_qset_set_link_ptr(&whc->pz_list[4], addr);
+                whc_qset_set_link_ptr(&whc->pz_list[6], addr);
+                whc_qset_set_link_ptr(&whc->pz_list[8], addr);
+                whc_qset_set_link_ptr(&whc->pz_list[10], addr);
+                whc_qset_set_link_ptr(&whc->pz_list[12], addr);
+                whc_qset_set_link_ptr(&whc->pz_list[14], addr);
+                break;
+        case 1:
+                whc_qset_set_link_ptr(&whc->pz_list[1], addr);
+                whc_qset_set_link_ptr(&whc->pz_list[5], addr);
+                whc_qset_set_link_ptr(&whc->pz_list[9], addr);
+                whc_qset_set_link_ptr(&whc->pz_list[13], addr);
+                break;
+        case 2:
+                whc_qset_set_link_ptr(&whc->pz_list[3], addr);
+                whc_qset_set_link_ptr(&whc->pz_list[11], addr);
+                break;
+        case 3:
+                whc_qset_set_link_ptr(&whc->pz_list[7], addr);
+                break;
+        case 4:
+                whc_qset_set_link_ptr(&whc->pz_list[15], addr);
+                break;
+        }
+}
+
+/*
+ * Return the 'period' to use for this qset.  The minimum interval for
+ * the endpoint is used so whatever urbs are submitted the device is
+ * polled often enough.
+ */
+static int qset_get_period(struct whc *whc, struct whc_qset *qset)
+{
+        uint8_t bInterval = qset->ep->desc.bInterval;
+
+        if (bInterval < 6)
+                bInterval = 6;
+        if (bInterval > 10)
+                bInterval = 10;
+        return bInterval - 6;
+}
+
+static void qset_insert_in_sw_list(struct whc *whc, struct whc_qset *qset)
+{
+        int period;
+
+        period = qset_get_period(whc, qset);
+
+        qset_clear(whc, qset);
+        list_move(&qset->list_node, &whc->periodic_list[period]);
+        qset->in_sw_list = true;
+}
+
+static void pzl_qset_remove(struct whc *whc, struct whc_qset *qset)
+{
+        list_move(&qset->list_node, &whc->periodic_removed_list);
+        qset->in_hw_list = false;
+        qset->in_sw_list = false;
+}
+
+/**
+ * pzl_process_qset - process any recently inactivated or halted qTDs
+ * in a qset.
+ *
+ * After inactive qTDs are removed, new qTDs can be added if the
+ * urb queue still contains URBs.
+ *
+ * Returns the schedule updates required.
+ */
+static enum whc_update pzl_process_qset(struct whc *whc, struct whc_qset *qset)
+{
+        enum whc_update update = 0;
+        uint32_t status = 0;
+
+        while (qset->ntds) {
+                struct whc_qtd *td;
+                int t;
+
+                t = qset->td_start;
+                td = &qset->qtd[qset->td_start];
+                status = le32_to_cpu(td->status);
+
+                /*
+                 * Nothing to do with a still active qTD.
+                 */
+                if (status & QTD_STS_ACTIVE)
+                        break;
+
+                if (status & QTD_STS_HALTED) {
+                        /* Ug, an error. */
+                        process_halted_qtd(whc, qset, td);
+                        goto done;
+                }
+
+                /* Mmm, a completed qTD. */
+                process_inactive_qtd(whc, qset, td);
+        }
+
+        update |= qset_add_qtds(whc, qset);
+
+done:
+        /*
+         * If there are no qTDs in this qset, remove it from the PZL.
+         */
+        if (qset->remove && qset->ntds == 0) {
+                pzl_qset_remove(whc, qset);
+                update |= WHC_UPDATE_REMOVED;
+        }
+
+        return update;
+}
+
+/**
+ * pzl_start - start the periodic schedule
+ * @whc: the WHCI host controller
+ *
+ * The PZL must be valid (e.g., all entries in the list should have
+ * the T bit set).
+ */
+void pzl_start(struct whc *whc)
+{
+        le_writeq(whc->pz_list_dma, whc->base + WUSBPERIODICLISTBASE);
+
+        whc_write_wusbcmd(whc, WUSBCMD_PERIODIC_EN, WUSBCMD_PERIODIC_EN);
+        whci_wait_for(&whc->umc->dev, whc->base + WUSBSTS,
+                      WUSBSTS_PERIODIC_SCHED, WUSBSTS_PERIODIC_SCHED,
+                      1000, "start PZL");
+}
+
+/**
+ * pzl_stop - stop the periodic schedule
+ * @whc: the WHCI host controller
+ */
+void pzl_stop(struct whc *whc)
+{
+        whc_write_wusbcmd(whc, WUSBCMD_PERIODIC_EN, 0);
+        whci_wait_for(&whc->umc->dev, whc->base + WUSBSTS,
+                      WUSBSTS_PERIODIC_SCHED, 0,
+                      1000, "stop PZL");
+}
+
+void pzl_update(struct whc *whc, uint32_t wusbcmd)
+{
+        whc_write_wusbcmd(whc, wusbcmd, wusbcmd);
+        wait_event(whc->periodic_list_wq,
+                   (le_readl(whc->base + WUSBCMD) & WUSBCMD_PERIODIC_UPDATED) == 0);
+}
+
+static void update_pzl_hw_view(struct whc *whc)
+{
+        struct whc_qset *qset, *t;
+        int period;
+        u64 tmp_qh = 0;
+
+        for (period = 0; period < 5; period++) {
+                list_for_each_entry_safe(qset, t, &whc->periodic_list[period], list_node) {
+                        whc_qset_set_link_ptr(&qset->qh.link, tmp_qh);
+                        tmp_qh = qset->qset_dma;
+                        qset->in_hw_list = true;
+                }
+                update_pzl_pointers(whc, period, tmp_qh);
+        }
+}
+
+/**
+ * scan_periodic_work - scan the PZL for qsets to process.
+ *
+ * Process each qset in the PZL in turn and then signal the WHC that
+ * the PZL has been updated.
+ *
+ * Then start, stop or update the periodic schedule as required.
+ */
+void scan_periodic_work(struct work_struct *work)
+{
+        struct whc *whc = container_of(work, struct whc, periodic_work);
+        struct whc_qset *qset, *t;
+        enum whc_update update = 0;
+        int period;
+
+        spin_lock_irq(&whc->lock);
+
+        dump_pzl(whc, "before processing");
+
+        for (period = 4; period >= 0; period--) {
+                list_for_each_entry_safe(qset, t, &whc->periodic_list[period], list_node) {
+                        if (!qset->in_hw_list)
+                                update |= WHC_UPDATE_ADDED;
+                        update |= pzl_process_qset(whc, qset);
+                }
+        }
+
+        if (update & (WHC_UPDATE_ADDED | WHC_UPDATE_REMOVED))
+                update_pzl_hw_view(whc);
+
+        dump_pzl(whc, "after processing");
+
+        spin_unlock_irq(&whc->lock);
+
+        if (update) {
+                uint32_t wusbcmd = WUSBCMD_PERIODIC_UPDATED | WUSBCMD_PERIODIC_SYNCED_DB;
+                if (update & WHC_UPDATE_REMOVED)
+                        wusbcmd |= WUSBCMD_PERIODIC_QSET_RM;
+                pzl_update(whc, wusbcmd);
+        }
+
+        /*
+         * Now that the PZL is updated, complete the removal of any
+         * removed qsets.
+         */
+        spin_lock(&whc->lock);
+
+        list_for_each_entry_safe(qset, t, &whc->periodic_removed_list, list_node) {
+                qset_remove_complete(whc, qset);
+        }
+
+        spin_unlock(&whc->lock);
+}
+
+/**
+ * pzl_urb_enqueue - queue an URB onto the periodic list (PZL)
+ * @whc: the WHCI host controller
+ * @urb: the URB to enqueue
+ * @mem_flags: flags for any memory allocations
+ *
+ * The qset for the endpoint is obtained and the urb queued on to it.
+ *
+ * Work is scheduled to update the hardware's view of the PZL.
+ */
+int pzl_urb_enqueue(struct whc *whc, struct urb *urb, gfp_t mem_flags)
+{
+        struct whc_qset *qset;
+        int err;
+        unsigned long flags;
+
+        spin_lock_irqsave(&whc->lock, flags);
+
+        qset = get_qset(whc, urb, GFP_ATOMIC);
+        if (qset == NULL)
+                err = -ENOMEM;
+        else
+                err = qset_add_urb(whc, qset, urb, GFP_ATOMIC);
+        if (!err) {
+                usb_hcd_link_urb_to_ep(&whc->wusbhc.usb_hcd, urb);
+                if (!qset->in_sw_list)
+                        qset_insert_in_sw_list(whc, qset);
+        }
+
+        spin_unlock_irqrestore(&whc->lock, flags);
+
+        if (!err)
+                queue_work(whc->workqueue, &whc->periodic_work);
+
+        return 0;
+}
+
+/**
+ * pzl_urb_dequeue - remove an URB (qset) from the periodic list
+ * @whc: the WHCI host controller
+ * @urb: the URB to dequeue
+ * @status: the current status of the URB
+ *
+ * URBs that do yet have qTDs can simply be removed from the software
+ * queue, otherwise the qset must be removed so the qTDs can be safely
+ * removed.
+ */
+int pzl_urb_dequeue(struct whc *whc, struct urb *urb, int status)
+{
+        struct whc_urb *wurb = urb->hcpriv;
+        struct whc_qset *qset = wurb->qset;
+        struct whc_std *std, *t;
+        int ret;
+        unsigned long flags;
+
+        spin_lock_irqsave(&whc->lock, flags);
+
+        ret = usb_hcd_check_unlink_urb(&whc->wusbhc.usb_hcd, urb, status);
+        if (ret < 0)
+                goto out;
+
+        list_for_each_entry_safe(std, t, &qset->stds, list_node) {
+                if (std->urb == urb)
+                        qset_free_std(whc, std);
+                else
+                        std->qtd = NULL; /* so this std is re-added when the qset is */
+        }
+
+        pzl_qset_remove(whc, qset);
+        wurb->status = status;
+        wurb->is_async = false;
+        queue_work(whc->workqueue, &wurb->dequeue_work);
+
+out:
+        spin_unlock_irqrestore(&whc->lock, flags);
+
+        return ret;
+}
+
+/**
+ * pzl_qset_delete - delete a qset from the PZL
+ */
+void pzl_qset_delete(struct whc *whc, struct whc_qset *qset)
+{
+        qset->remove = 1;
+        queue_work(whc->workqueue, &whc->periodic_work);
+        qset_delete(whc, qset);
+}
+
+
+/**
+ * pzl_init - initialize the periodic zone list
+ * @whc: the WHCI host controller
+ */
+int pzl_init(struct whc *whc)
+{
+        int i;
+
+        whc->pz_list = dma_alloc_coherent(&whc->umc->dev, sizeof(u64) * 16,
+                                          &whc->pz_list_dma, GFP_KERNEL);
+        if (whc->pz_list == NULL)
+                return -ENOMEM;
+
+        /* Set T bit on all elements in PZL. */
+        for (i = 0; i < 16; i++)
+                whc->pz_list[i] = cpu_to_le64(QH_LINK_NTDS(8) | QH_LINK_T);
+
+        le_writeq(whc->pz_list_dma, whc->base + WUSBPERIODICLISTBASE);
+
+        return 0;
+}
+
+/**
+ * pzl_clean_up - free PZL resources
+ * @whc: the WHCI host controller
+ *
+ * The PZL is stopped and empty.
+ */
+void pzl_clean_up(struct whc *whc)
+{
+        if (whc->pz_list)
+                dma_free_coherent(&whc->umc->dev,  sizeof(u64) * 16, whc->pz_list,
+                                  whc->pz_list_dma);
+}
diff --git a/drivers/usb/host/whci/qset.c b/drivers/usb/host/whci/qset.c
new file mode 100644
index 000000000000..0420037d2e18
--- /dev/null
+++ b/drivers/usb/host/whci/qset.c
@@ -0,0 +1,567 @@
+/*
+ * Wireless Host Controller (WHC) qset management.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/kernel.h>
+#include <linux/dma-mapping.h>
+#include <linux/uwb/umc.h>
+#include <linux/usb.h>
+
+#include "../../wusbcore/wusbhc.h"
+
+#include "whcd.h"
+
+void dump_qset(struct whc_qset *qset, struct device *dev)
+{
+        struct whc_std *std;
+        struct urb *urb = NULL;
+        int i;
+
+        dev_dbg(dev, "qset %08x\n", (u32)qset->qset_dma);
+        dev_dbg(dev, "  -> %08x\n", (u32)qset->qh.link);
+        dev_dbg(dev, "  info: %08x %08x %08x\n",
+                qset->qh.info1, qset->qh.info2,  qset->qh.info3);
+        dev_dbg(dev, "  sts: %04x errs: %d\n", qset->qh.status, qset->qh.err_count);
+        dev_dbg(dev, "  TD: sts: %08x opts: %08x\n",
+                qset->qh.overlay.qtd.status, qset->qh.overlay.qtd.options);
+
+        for (i = 0; i < WHCI_QSET_TD_MAX; i++) {
+                dev_dbg(dev, "  %c%c TD[%d]: sts: %08x opts: %08x ptr: %08x\n",
+                        i == qset->td_start ? 'S' : ' ',
+                        i == qset->td_end ? 'E' : ' ',
+                        i, qset->qtd[i].status, qset->qtd[i].options,
+                        (u32)qset->qtd[i].page_list_ptr);
+        }
+        dev_dbg(dev, "  ntds: %d\n", qset->ntds);
+        list_for_each_entry(std, &qset->stds, list_node) {
+                if (urb != std->urb) {
+                        urb = std->urb;
+                        dev_dbg(dev, "  urb %p transferred: %d bytes\n", urb,
+                                urb->actual_length);
+                }
+                if (std->qtd)
+                        dev_dbg(dev, "    sTD[%td]: %zu bytes @ %08x\n",
+                                std->qtd - &qset->qtd[0],
+                                std->len, std->num_pointers ?
+                                (u32)(std->pl_virt[0].buf_ptr) : (u32)std->dma_addr);
+                else
+                        dev_dbg(dev, "    sTD[-]: %zd bytes @ %08x\n",
+                                std->len, std->num_pointers ?
+                                (u32)(std->pl_virt[0].buf_ptr) : (u32)std->dma_addr);
+        }
+}
+
+struct whc_qset *qset_alloc(struct whc *whc, gfp_t mem_flags)
+{
+        struct whc_qset *qset;
+        dma_addr_t dma;
+
+        qset = dma_pool_alloc(whc->qset_pool, mem_flags, &dma);
+        if (qset == NULL)
+                return NULL;
+        memset(qset, 0, sizeof(struct whc_qset));
+
+        qset->qset_dma = dma;
+        qset->whc = whc;
+
+        INIT_LIST_HEAD(&qset->list_node);
+        INIT_LIST_HEAD(&qset->stds);
+
+        return qset;
+}
+
+/**
+ * qset_fill_qh - fill the static endpoint state in a qset's QHead
+ * @qset: the qset whose QH needs initializing with static endpoint
+ *        state
+ * @urb:  an urb for a transfer to this endpoint
+ */
+static void qset_fill_qh(struct whc_qset *qset, struct urb *urb)
+{
+        struct usb_device *usb_dev = urb->dev;
+        struct usb_wireless_ep_comp_descriptor *epcd;
+        bool is_out;
+
+        is_out = usb_pipeout(urb->pipe);
+
+        epcd = (struct usb_wireless_ep_comp_descriptor *)qset->ep->extra;
+
+        if (epcd) {
+                qset->max_seq = epcd->bMaxSequence;
+                qset->max_burst = epcd->bMaxBurst;
+        } else {
+                qset->max_seq = 2;
+                qset->max_burst = 1;
+        }
+
+        qset->qh.info1 = cpu_to_le32(
+                QH_INFO1_EP(usb_pipeendpoint(urb->pipe))
+                | (is_out ? QH_INFO1_DIR_OUT : QH_INFO1_DIR_IN)
+                | usb_pipe_to_qh_type(urb->pipe)
+                | QH_INFO1_DEV_INFO_IDX(wusb_port_no_to_idx(usb_dev->portnum))
+                | QH_INFO1_MAX_PKT_LEN(usb_maxpacket(urb->dev, urb->pipe, is_out))
+                );
+        qset->qh.info2 = cpu_to_le32(
+                QH_INFO2_BURST(qset->max_burst)
+                | QH_INFO2_DBP(0)
+                | QH_INFO2_MAX_COUNT(3)
+                | QH_INFO2_MAX_RETRY(3)
+                | QH_INFO2_MAX_SEQ(qset->max_seq - 1)
+                );
+        /* FIXME: where can we obtain these Tx parameters from?  Why
+         * doesn't the chip know what Tx power to use? It knows the Rx
+         * strength and can presumably guess the Tx power required
+         * from that? */
+        qset->qh.info3 = cpu_to_le32(
+                QH_INFO3_TX_RATE_53_3
+                | QH_INFO3_TX_PWR(0) /* 0 == max power */
+                );
+}
+
+/**
+ * qset_clear - clear fields in a qset so it may be reinserted into a
+ * schedule
+ */
+void qset_clear(struct whc *whc, struct whc_qset *qset)
+{
+        qset->td_start = qset->td_end = qset->ntds = 0;
+        qset->remove = 0;
+
+        qset->qh.link = cpu_to_le32(QH_LINK_NTDS(8) | QH_LINK_T);
+        qset->qh.status = cpu_to_le16(QH_STATUS_ICUR(qset->td_start));
+        qset->qh.err_count = 0;
+        qset->qh.cur_window = cpu_to_le32((1 << qset->max_burst) - 1);
+        qset->qh.scratch[0] = 0;
+        qset->qh.scratch[1] = 0;
+        qset->qh.scratch[2] = 0;
+
+        memset(&qset->qh.overlay, 0, sizeof(qset->qh.overlay));
+
+        init_completion(&qset->remove_complete);
+}
+
+/**
+ * get_qset - get the qset for an async endpoint
+ *
+ * A new qset is created if one does not already exist.
+ */
+struct whc_qset *get_qset(struct whc *whc, struct urb *urb,
+                                 gfp_t mem_flags)
+{
+        struct whc_qset *qset;
+
+        qset = urb->ep->hcpriv;
+        if (qset == NULL) {
+                qset = qset_alloc(whc, mem_flags);
+                if (qset == NULL)
+                        return NULL;
+
+                qset->ep = urb->ep;
+                urb->ep->hcpriv = qset;
+                qset_fill_qh(qset, urb);
+        }
+        return qset;
+}
+
+void qset_remove_complete(struct whc *whc, struct whc_qset *qset)
+{
+        list_del_init(&qset->list_node);
+        complete(&qset->remove_complete);
+}
+
+/**
+ * qset_add_qtds - add qTDs for an URB to a qset
+ *
+ * Returns true if the list (ASL/PZL) must be updated because (for a
+ * WHCI 0.95 controller) an activated qTD was pointed to be iCur.
+ */
+enum whc_update qset_add_qtds(struct whc *whc, struct whc_qset *qset)
+{
+        struct whc_std *std;
+        enum whc_update update = 0;
+
+        list_for_each_entry(std, &qset->stds, list_node) {
+                struct whc_qtd *qtd;
+                uint32_t status;
+
+                if (qset->ntds >= WHCI_QSET_TD_MAX
+                    || (qset->pause_after_urb && std->urb != qset->pause_after_urb))
+                        break;
+
+                if (std->qtd)
+                        continue; /* already has a qTD */
+
+                qtd = std->qtd = &qset->qtd[qset->td_end];
+
+                /* Fill in setup bytes for control transfers. */
+                if (usb_pipecontrol(std->urb->pipe))
+                        memcpy(qtd->setup, std->urb->setup_packet, 8);
+
+                status = QTD_STS_ACTIVE | QTD_STS_LEN(std->len);
+
+                if (whc_std_last(std) && usb_pipeout(std->urb->pipe))
+                        status |= QTD_STS_LAST_PKT;
+
+                /*
+                 * For an IN transfer the iAlt field should be set so
+                 * the h/w will automatically advance to the next
+                 * transfer. However, if there are 8 or more TDs
+                 * remaining in this transfer then iAlt cannot be set
+                 * as it could point to somewhere in this transfer.
+                 */
+                if (std->ntds_remaining < WHCI_QSET_TD_MAX) {
+                        int ialt;
+                        ialt = (qset->td_end + std->ntds_remaining) % WHCI_QSET_TD_MAX;
+                        status |= QTD_STS_IALT(ialt);
+                } else if (usb_pipein(std->urb->pipe))
+                        qset->pause_after_urb = std->urb;
+
+                if (std->num_pointers)
+                        qtd->options = cpu_to_le32(QTD_OPT_IOC);
+                else
+                        qtd->options = cpu_to_le32(QTD_OPT_IOC | QTD_OPT_SMALL);
+                qtd->page_list_ptr = cpu_to_le64(std->dma_addr);
+
+                qtd->status = cpu_to_le32(status);
+
+                if (QH_STATUS_TO_ICUR(qset->qh.status) == qset->td_end)
+                        update = WHC_UPDATE_UPDATED;
+
+                if (++qset->td_end >= WHCI_QSET_TD_MAX)
+                        qset->td_end = 0;
+                qset->ntds++;
+        }
+
+        return update;
+}
+
+/**
+ * qset_remove_qtd - remove the first qTD from a qset.
+ *
+ * The qTD might be still active (if it's part of a IN URB that
+ * resulted in a short read) so ensure it's deactivated.
+ */
+static void qset_remove_qtd(struct whc *whc, struct whc_qset *qset)
+{
+        qset->qtd[qset->td_start].status = 0;
+
+        if (++qset->td_start >= WHCI_QSET_TD_MAX)
+                qset->td_start = 0;
+        qset->ntds--;
+}
+
+/**
+ * qset_free_std - remove an sTD and free it.
+ * @whc: the WHCI host controller
+ * @std: the sTD to remove and free.
+ */
+void qset_free_std(struct whc *whc, struct whc_std *std)
+{
+        list_del(&std->list_node);
+        if (std->num_pointers) {
+                dma_unmap_single(whc->wusbhc.dev, std->dma_addr,
+                                 std->num_pointers * sizeof(struct whc_page_list_entry),
+                                 DMA_TO_DEVICE);
+                kfree(std->pl_virt);
+        }
+
+        kfree(std);
+}
+
+/**
+ * qset_remove_qtds - remove an URB's qTDs (and sTDs).
+ */
+static void qset_remove_qtds(struct whc *whc, struct whc_qset *qset,
+                             struct urb *urb)
+{
+        struct whc_std *std, *t;
+
+        list_for_each_entry_safe(std, t, &qset->stds, list_node) {
+                if (std->urb != urb)
+                        break;
+                if (std->qtd != NULL)
+                        qset_remove_qtd(whc, qset);
+                qset_free_std(whc, std);
+        }
+}
+
+/**
+ * qset_free_stds - free any remaining sTDs for an URB.
+ */
+static void qset_free_stds(struct whc_qset *qset, struct urb *urb)
+{
+        struct whc_std *std, *t;
+
+        list_for_each_entry_safe(std, t, &qset->stds, list_node) {
+                if (std->urb == urb)
+                        qset_free_std(qset->whc, std);
+        }
+}
+
+static int qset_fill_page_list(struct whc *whc, struct whc_std *std, gfp_t mem_flags)
+{
+        dma_addr_t dma_addr = std->dma_addr;
+        dma_addr_t sp, ep;
+        size_t std_len = std->len;
+        size_t pl_len;
+        int p;
+
+        sp = ALIGN(dma_addr, WHCI_PAGE_SIZE);
+        ep = dma_addr + std_len;
+        std->num_pointers = DIV_ROUND_UP(ep - sp, WHCI_PAGE_SIZE);
+
+        pl_len = std->num_pointers * sizeof(struct whc_page_list_entry);
+        std->pl_virt = kmalloc(pl_len, mem_flags);
+        if (std->pl_virt == NULL)
+                return -ENOMEM;
+        std->dma_addr = dma_map_single(whc->wusbhc.dev, std->pl_virt, pl_len, DMA_TO_DEVICE);
+
+        for (p = 0; p < std->num_pointers; p++) {
+                std->pl_virt[p].buf_ptr = cpu_to_le64(dma_addr);
+                dma_addr = ALIGN(dma_addr + WHCI_PAGE_SIZE, WHCI_PAGE_SIZE);
+        }
+
+        return 0;
+}
+
+/**
+ * urb_dequeue_work - executes asl/pzl update and gives back the urb to the system.
+ */
+static void urb_dequeue_work(struct work_struct *work)
+{
+        struct whc_urb *wurb = container_of(work, struct whc_urb, dequeue_work);
+        struct whc_qset *qset = wurb->qset;
+        struct whc *whc = qset->whc;
+        unsigned long flags;
+
+        if (wurb->is_async == true)
+                asl_update(whc, WUSBCMD_ASYNC_UPDATED
+                           | WUSBCMD_ASYNC_SYNCED_DB
+                           | WUSBCMD_ASYNC_QSET_RM);
+        else
+                pzl_update(whc, WUSBCMD_PERIODIC_UPDATED
+                           | WUSBCMD_PERIODIC_SYNCED_DB
+                           | WUSBCMD_PERIODIC_QSET_RM);
+
+        spin_lock_irqsave(&whc->lock, flags);
+        qset_remove_urb(whc, qset, wurb->urb, wurb->status);
+        spin_unlock_irqrestore(&whc->lock, flags);
+}
+
+/**
+ * qset_add_urb - add an urb to the qset's queue.
+ *
+ * The URB is chopped into sTDs, one for each qTD that will required.
+ * At least one qTD (and sTD) is required even if the transfer has no
+ * data (e.g., for some control transfers).
+ */
+int qset_add_urb(struct whc *whc, struct whc_qset *qset, struct urb *urb,
+        gfp_t mem_flags)
+{
+        struct whc_urb *wurb;
+        int remaining = urb->transfer_buffer_length;
+        u64 transfer_dma = urb->transfer_dma;
+        int ntds_remaining;
+
+        ntds_remaining = DIV_ROUND_UP(remaining, QTD_MAX_XFER_SIZE);
+        if (ntds_remaining == 0)
+                ntds_remaining = 1;
+
+        wurb = kzalloc(sizeof(struct whc_urb), mem_flags);
+        if (wurb == NULL)
+                goto err_no_mem;
+        urb->hcpriv = wurb;
+        wurb->qset = qset;
+        wurb->urb = urb;
+        INIT_WORK(&wurb->dequeue_work, urb_dequeue_work);
+
+        while (ntds_remaining) {
+                struct whc_std *std;
+                size_t std_len;
+
+                std = kmalloc(sizeof(struct whc_std), mem_flags);
+                if (std == NULL)
+                        goto err_no_mem;
+
+                std_len = remaining;
+                if (std_len > QTD_MAX_XFER_SIZE)
+                        std_len = QTD_MAX_XFER_SIZE;
+
+                std->urb = urb;
+                std->dma_addr = transfer_dma;
+                std->len = std_len;
+                std->ntds_remaining = ntds_remaining;
+                std->qtd = NULL;
+
+                INIT_LIST_HEAD(&std->list_node);
+                list_add_tail(&std->list_node, &qset->stds);
+
+                if (std_len > WHCI_PAGE_SIZE) {
+                        if (qset_fill_page_list(whc, std, mem_flags) < 0)
+                                goto err_no_mem;
+                } else
+                        std->num_pointers = 0;
+
+                ntds_remaining--;
+                remaining -= std_len;
+                transfer_dma += std_len;
+        }
+
+        return 0;
+
+err_no_mem:
+        qset_free_stds(qset, urb);
+        return -ENOMEM;
+}
+
+/**
+ * qset_remove_urb - remove an URB from the urb queue.
+ *
+ * The URB is returned to the USB subsystem.
+ */
+void qset_remove_urb(struct whc *whc, struct whc_qset *qset,
+                            struct urb *urb, int status)
+{
+        struct wusbhc *wusbhc = &whc->wusbhc;
+        struct whc_urb *wurb = urb->hcpriv;
+
+        usb_hcd_unlink_urb_from_ep(&wusbhc->usb_hcd, urb);
+        /* Drop the lock as urb->complete() may enqueue another urb. */
+        spin_unlock(&whc->lock);
+        wusbhc_giveback_urb(wusbhc, urb, status);
+        spin_lock(&whc->lock);
+
+        kfree(wurb);
+}
+
+/**
+ * get_urb_status_from_qtd - get the completed urb status from qTD status
+ * @urb:    completed urb
+ * @status: qTD status
+ */
+static int get_urb_status_from_qtd(struct urb *urb, u32 status)
+{
+        if (status & QTD_STS_HALTED) {
+                if (status & QTD_STS_DBE)
+                        return usb_pipein(urb->pipe) ? -ENOSR : -ECOMM;
+                else if (status & QTD_STS_BABBLE)
+                        return -EOVERFLOW;
+                else if (status & QTD_STS_RCE)
+                        return -ETIME;
+                return -EPIPE;
+        }
+        if (usb_pipein(urb->pipe)
+            && (urb->transfer_flags & URB_SHORT_NOT_OK)
+            && urb->actual_length < urb->transfer_buffer_length)
+                return -EREMOTEIO;
+        return 0;
+}
+
+/**
+ * process_inactive_qtd - process an inactive (but not halted) qTD.
+ *
+ * Update the urb with the transfer bytes from the qTD, if the urb is
+ * completely transfered or (in the case of an IN only) the LPF is
+ * set, then the transfer is complete and the urb should be returned
+ * to the system.
+ */
+void process_inactive_qtd(struct whc *whc, struct whc_qset *qset,
+                                 struct whc_qtd *qtd)
+{
+        struct whc_std *std = list_first_entry(&qset->stds, struct whc_std, list_node);
+        struct urb *urb = std->urb;
+        uint32_t status;
+        bool complete;
+
+        status = le32_to_cpu(qtd->status);
+
+        urb->actual_length += std->len - QTD_STS_TO_LEN(status);
+
+        if (usb_pipein(urb->pipe) && (status & QTD_STS_LAST_PKT))
+                complete = true;
+        else
+                complete = whc_std_last(std);
+
+        qset_remove_qtd(whc, qset);
+        qset_free_std(whc, std);
+
+        /*
+         * Transfers for this URB are complete?  Then return it to the
+         * USB subsystem.
+         */
+        if (complete) {
+                qset_remove_qtds(whc, qset, urb);
+                qset_remove_urb(whc, qset, urb, get_urb_status_from_qtd(urb, status));
+
+                /*
+                 * If iAlt isn't valid then the hardware didn't
+                 * advance iCur. Adjust the start and end pointers to
+                 * match iCur.
+                 */
+                if (!(status & QTD_STS_IALT_VALID))
+                        qset->td_start = qset->td_end
+                                = QH_STATUS_TO_ICUR(le16_to_cpu(qset->qh.status));
+                qset->pause_after_urb = NULL;
+        }
+}
+
+/**
+ * process_halted_qtd - process a qset with a halted qtd
+ *
+ * Remove all the qTDs for the failed URB and return the failed URB to
+ * the USB subsystem.  Then remove all other qTDs so the qset can be
+ * removed.
+ *
+ * FIXME: this is the point where rate adaptation can be done.  If a
+ * transfer failed because it exceeded the maximum number of retries
+ * then it could be reactivated with a slower rate without having to
+ * remove the qset.
+ */
+void process_halted_qtd(struct whc *whc, struct whc_qset *qset,
+                               struct whc_qtd *qtd)
+{
+        struct whc_std *std = list_first_entry(&qset->stds, struct whc_std, list_node);
+        struct urb *urb = std->urb;
+        int urb_status;
+
+        urb_status = get_urb_status_from_qtd(urb, le32_to_cpu(qtd->status));
+
+        qset_remove_qtds(whc, qset, urb);
+        qset_remove_urb(whc, qset, urb, urb_status);
+
+        list_for_each_entry(std, &qset->stds, list_node) {
+                if (qset->ntds == 0)
+                        break;
+                qset_remove_qtd(whc, qset);
+                std->qtd = NULL;
+        }
+
+        qset->remove = 1;
+}
+
+void qset_free(struct whc *whc, struct whc_qset *qset)
+{
+        dma_pool_free(whc->qset_pool, qset, qset->qset_dma);
+}
+
+/**
+ * qset_delete - wait for a qset to be unused, then free it.
+ */
+void qset_delete(struct whc *whc, struct whc_qset *qset)
+{
+        wait_for_completion(&qset->remove_complete);
+        qset_free(whc, qset);
+}
diff --git a/drivers/usb/host/whci/whcd.h b/drivers/usb/host/whci/whcd.h
new file mode 100644
index 000000000000..1d2a53bd39fd
--- /dev/null
+++ b/drivers/usb/host/whci/whcd.h
@@ -0,0 +1,197 @@
+/*
+ * Wireless Host Controller (WHC) private header.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+#ifndef __WHCD_H
+#define __WHCD_H
+
+#include <linux/uwb/whci.h>
+#include <linux/workqueue.h>
+
+#include "whci-hc.h"
+
+/* Generic command timeout. */
+#define WHC_GENCMD_TIMEOUT_MS 100
+
+
+struct whc {
+        struct wusbhc wusbhc;
+        struct umc_dev *umc;
+
+        resource_size_t base_phys;
+        void __iomem *base;
+        int irq;
+
+        u8 n_devices;
+        u8 n_keys;
+        u8 n_mmc_ies;
+
+        u64 *pz_list;
+        struct dn_buf_entry *dn_buf;
+        struct di_buf_entry *di_buf;
+        dma_addr_t pz_list_dma;
+        dma_addr_t dn_buf_dma;
+        dma_addr_t di_buf_dma;
+
+        spinlock_t   lock;
+        struct mutex mutex;
+
+        void *            gen_cmd_buf;
+        dma_addr_t        gen_cmd_buf_dma;
+        wait_queue_head_t cmd_wq;
+
+        struct workqueue_struct *workqueue;
+        struct work_struct       dn_work;
+
+        struct dma_pool *qset_pool;
+
+        struct list_head async_list;
+        struct list_head async_removed_list;
+        wait_queue_head_t async_list_wq;
+        struct work_struct async_work;
+
+        struct list_head periodic_list[5];
+        struct list_head periodic_removed_list;
+        wait_queue_head_t periodic_list_wq;
+        struct work_struct periodic_work;
+};
+
+#define wusbhc_to_whc(w) (container_of((w), struct whc, wusbhc))
+
+/**
+ * struct whc_std - a software TD.
+ * @urb: the URB this sTD is for.
+ * @offset: start of the URB's data for this TD.
+ * @len: the length of data in the associated TD.
+ * @ntds_remaining: number of TDs (starting from this one) in this transfer.
+ *
+ * Queued URBs may require more TDs than are available in a qset so we
+ * use a list of these "software TDs" (sTDs) to hold per-TD data.
+ */
+struct whc_std {
+        struct urb *urb;
+        size_t len;
+        int    ntds_remaining;
+        struct whc_qtd *qtd;
+
+        struct list_head list_node;
+        int num_pointers;
+        dma_addr_t dma_addr;
+        struct whc_page_list_entry *pl_virt;
+};
+
+/**
+ * struct whc_urb - per URB host controller structure.
+ * @urb: the URB this struct is for.
+ * @qset: the qset associated to the URB.
+ * @dequeue_work: the work to remove the URB when dequeued.
+ * @is_async: the URB belongs to async sheduler or not.
+ * @status: the status to be returned when calling wusbhc_giveback_urb.
+ */
+struct whc_urb {
+        struct urb *urb;
+        struct whc_qset *qset;
+        struct work_struct dequeue_work;
+        bool is_async;
+        int status;
+};
+
+/**
+ * whc_std_last - is this sTD the URB's last?
+ * @std: the sTD to check.
+ */
+static inline bool whc_std_last(struct whc_std *std)
+{
+        return std->ntds_remaining <= 1;
+}
+
+enum whc_update {
+        WHC_UPDATE_ADDED   = 0x01,
+        WHC_UPDATE_REMOVED = 0x02,
+        WHC_UPDATE_UPDATED = 0x04,
+};
+
+/* init.c */
+int whc_init(struct whc *whc);
+void whc_clean_up(struct whc *whc);
+
+/* hw.c */
+void whc_write_wusbcmd(struct whc *whc, u32 mask, u32 val);
+int whc_do_gencmd(struct whc *whc, u32 cmd, u32 params, void *addr, size_t len);
+
+/* wusb.c */
+int whc_wusbhc_start(struct wusbhc *wusbhc);
+void whc_wusbhc_stop(struct wusbhc *wusbhc);
+int whc_mmcie_add(struct wusbhc *wusbhc, u8 interval, u8 repeat_cnt,
+                  u8 handle, struct wuie_hdr *wuie);
+int whc_mmcie_rm(struct wusbhc *wusbhc, u8 handle);
+int whc_bwa_set(struct wusbhc *wusbhc, s8 stream_index, const struct uwb_mas_bm *mas_bm);
+int whc_dev_info_set(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev);
+int whc_set_num_dnts(struct wusbhc *wusbhc, u8 interval, u8 slots);
+int whc_set_ptk(struct wusbhc *wusbhc, u8 port_idx, u32 tkid,
+                const void *ptk, size_t key_size);
+int whc_set_gtk(struct wusbhc *wusbhc, u32 tkid,
+                const void *gtk, size_t key_size);
+int whc_set_cluster_id(struct whc *whc, u8 bcid);
+
+/* int.c */
+irqreturn_t whc_int_handler(struct usb_hcd *hcd);
+void whc_dn_work(struct work_struct *work);
+
+/* asl.c */
+void asl_start(struct whc *whc);
+void asl_stop(struct whc *whc);
+int  asl_init(struct whc *whc);
+void asl_clean_up(struct whc *whc);
+int  asl_urb_enqueue(struct whc *whc, struct urb *urb, gfp_t mem_flags);
+int  asl_urb_dequeue(struct whc *whc, struct urb *urb, int status);
+void asl_qset_delete(struct whc *whc, struct whc_qset *qset);
+void scan_async_work(struct work_struct *work);
+
+/* pzl.c */
+int  pzl_init(struct whc *whc);
+void pzl_clean_up(struct whc *whc);
+void pzl_start(struct whc *whc);
+void pzl_stop(struct whc *whc);
+int  pzl_urb_enqueue(struct whc *whc, struct urb *urb, gfp_t mem_flags);
+int  pzl_urb_dequeue(struct whc *whc, struct urb *urb, int status);
+void pzl_qset_delete(struct whc *whc, struct whc_qset *qset);
+void scan_periodic_work(struct work_struct *work);
+
+/* qset.c */
+struct whc_qset *qset_alloc(struct whc *whc, gfp_t mem_flags);
+void qset_free(struct whc *whc, struct whc_qset *qset);
+struct whc_qset *get_qset(struct whc *whc, struct urb *urb, gfp_t mem_flags);
+void qset_delete(struct whc *whc, struct whc_qset *qset);
+void qset_clear(struct whc *whc, struct whc_qset *qset);
+int qset_add_urb(struct whc *whc, struct whc_qset *qset, struct urb *urb,
+                 gfp_t mem_flags);
+void qset_free_std(struct whc *whc, struct whc_std *std);
+void qset_remove_urb(struct whc *whc, struct whc_qset *qset,
+                            struct urb *urb, int status);
+void process_halted_qtd(struct whc *whc, struct whc_qset *qset,
+                               struct whc_qtd *qtd);
+void process_inactive_qtd(struct whc *whc, struct whc_qset *qset,
+                                 struct whc_qtd *qtd);
+enum whc_update qset_add_qtds(struct whc *whc, struct whc_qset *qset);
+void qset_remove_complete(struct whc *whc, struct whc_qset *qset);
+void dump_qset(struct whc_qset *qset, struct device *dev);
+void pzl_update(struct whc *whc, uint32_t wusbcmd);
+void asl_update(struct whc *whc, uint32_t wusbcmd);
+
+#endif /* #ifndef __WHCD_H */
diff --git a/drivers/usb/host/whci/whci-hc.h b/drivers/usb/host/whci/whci-hc.h
new file mode 100644
index 000000000000..bff1eb7a35cf
--- /dev/null
+++ b/drivers/usb/host/whci/whci-hc.h
@@ -0,0 +1,416 @@
+/*
+ * Wireless Host Controller (WHC) data structures.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+#ifndef _WHCI_WHCI_HC_H
+#define _WHCI_WHCI_HC_H
+
+#include <linux/list.h>
+
+/**
+ * WHCI_PAGE_SIZE - page size use by WHCI
+ *
+ * WHCI assumes that host system uses pages of 4096 octets.
+ */
+#define WHCI_PAGE_SIZE 4096
+
+
+/**
+ * QTD_MAX_TXFER_SIZE - max number of bytes to transfer with a single
+ * qtd.
+ *
+ * This is 2^20 - 1.
+ */
+#define QTD_MAX_XFER_SIZE 1048575
+
+
+/**
+ * struct whc_qtd - Queue Element Transfer Descriptors (qTD)
+ *
+ * This describes the data for a bulk, control or interrupt transfer.
+ *
+ * [WHCI] section 3.2.4
+ */
+struct whc_qtd {
+        __le32 status; /*< remaining transfer len and transfer status */
+        __le32 options;
+        __le64 page_list_ptr; /*< physical pointer to data buffer page list*/
+        __u8   setup[8];      /*< setup data for control transfers */
+} __attribute__((packed));
+
+#define QTD_STS_ACTIVE     (1 << 31)  /* enable execution of transaction */
+#define QTD_STS_HALTED     (1 << 30)  /* transfer halted */
+#define QTD_STS_DBE        (1 << 29)  /* data buffer error */
+#define QTD_STS_BABBLE     (1 << 28)  /* babble detected */
+#define QTD_STS_RCE        (1 << 27)  /* retry count exceeded */
+#define QTD_STS_LAST_PKT   (1 << 26)  /* set Last Packet Flag in WUSB header */
+#define QTD_STS_INACTIVE   (1 << 25)  /* queue set is marked inactive */
+#define QTD_STS_IALT_VALID (1 << 23)                          /* iAlt field is valid */
+#define QTD_STS_IALT(i)    (QTD_STS_IALT_VALID | ((i) << 20)) /* iAlt field */
+#define QTD_STS_LEN(l)     ((l) << 0) /* transfer length */
+#define QTD_STS_TO_LEN(s)  ((s) & 0x000fffff)
+
+#define QTD_OPT_IOC      (1 << 1) /* page_list_ptr points to buffer directly */
+#define QTD_OPT_SMALL    (1 << 0) /* interrupt on complete */
+
+/**
+ * struct whc_itd - Isochronous Queue Element Transfer Descriptors (iTD)
+ *
+ * This describes the data and other parameters for an isochronous
+ * transfer.
+ *
+ * [WHCI] section 3.2.5
+ */
+struct whc_itd {
+        __le16 presentation_time;    /*< presentation time for OUT transfers */
+        __u8   num_segments;         /*< number of data segments in segment list */
+        __u8   status;               /*< command execution status */
+        __le32 options;              /*< misc transfer options */
+        __le64 page_list_ptr;        /*< physical pointer to data buffer page list */
+        __le64 seg_list_ptr;         /*< physical pointer to segment list */
+} __attribute__((packed));
+
+#define ITD_STS_ACTIVE   (1 << 7) /* enable execution of transaction */
+#define ITD_STS_DBE      (1 << 5) /* data buffer error */
+#define ITD_STS_BABBLE   (1 << 4) /* babble detected */
+#define ITD_STS_INACTIVE (1 << 1) /* queue set is marked inactive */
+
+#define ITD_OPT_IOC      (1 << 1) /* interrupt on complete */
+#define ITD_OPT_SMALL    (1 << 0) /* page_list_ptr points to buffer directly */
+
+/**
+ * Page list entry.
+ *
+ * A TD's page list must contain sufficient page list entries for the
+ * total data length in the TD.
+ *
+ * [WHCI] section 3.2.4.3
+ */
+struct whc_page_list_entry {
+        __le64 buf_ptr; /*< physical pointer to buffer */
+} __attribute__((packed));
+
+/**
+ * struct whc_seg_list_entry - Segment list entry.
+ *
+ * Describes a portion of the data buffer described in the containing
+ * qTD's page list.
+ *
+ * seg_ptr = qtd->page_list_ptr[qtd->seg_list_ptr[seg].idx].buf_ptr
+ *           + qtd->seg_list_ptr[seg].offset;
+ *
+ * Segments can't cross page boundries.
+ *
+ * [WHCI] section 3.2.5.5
+ */
+struct whc_seg_list_entry {
+        __le16 len;    /*< segment length */
+        __u8   idx;    /*< index into page list */
+        __u8   status; /*< segment status */
+        __le16 offset; /*< 12 bit offset into page */
+} __attribute__((packed));
+
+/**
+ * struct whc_qhead - endpoint and status information for a qset.
+ *
+ * [WHCI] section 3.2.6
+ */
+struct whc_qhead {
+        __le64 link; /*< next qset in list */
+        __le32 info1;
+        __le32 info2;
+        __le32 info3;
+        __le16 status;
+        __le16 err_count;  /*< transaction error count */
+        __le32 cur_window;
+        __le32 scratch[3]; /*< h/w scratch area */
+        union {
+                struct whc_qtd qtd;
+                struct whc_itd itd;
+        } overlay;
+} __attribute__((packed));
+
+#define QH_LINK_PTR_MASK (~0x03Full)
+#define QH_LINK_PTR(ptr) ((ptr) & QH_LINK_PTR_MASK)
+#define QH_LINK_IQS      (1 << 4) /* isochronous queue set */
+#define QH_LINK_NTDS(n)  (((n) - 1) << 1) /* number of TDs in queue set */
+#define QH_LINK_T        (1 << 0) /* last queue set in periodic schedule list */
+
+#define QH_INFO1_EP(e)           ((e) << 0)  /* endpoint number */
+#define QH_INFO1_DIR_IN          (1 << 4)    /* IN transfer */
+#define QH_INFO1_DIR_OUT         (0 << 4)    /* OUT transfer */
+#define QH_INFO1_TR_TYPE_CTRL    (0x0 << 5)  /* control transfer */
+#define QH_INFO1_TR_TYPE_ISOC    (0x1 << 5)  /* isochronous transfer */
+#define QH_INFO1_TR_TYPE_BULK    (0x2 << 5)  /* bulk transfer */
+#define QH_INFO1_TR_TYPE_INT     (0x3 << 5)  /* interrupt */
+#define QH_INFO1_TR_TYPE_LP_INT  (0x7 << 5)  /* low power interrupt */
+#define QH_INFO1_DEV_INFO_IDX(i) ((i) << 8)  /* index into device info buffer */
+#define QH_INFO1_SET_INACTIVE    (1 << 15)   /* set inactive after transfer */
+#define QH_INFO1_MAX_PKT_LEN(l)  ((l) << 16) /* maximum packet length */
+
+#define QH_INFO2_BURST(b)        ((b) << 0)  /* maximum burst length */
+#define QH_INFO2_DBP(p)          ((p) << 5)  /* data burst policy (see [WUSB] table 5-7) */
+#define QH_INFO2_MAX_COUNT(c)    ((c) << 8)  /* max isoc/int pkts per zone */
+#define QH_INFO2_RQS             (1 << 15)   /* reactivate queue set */
+#define QH_INFO2_MAX_RETRY(r)    ((r) << 16) /* maximum transaction retries */
+#define QH_INFO2_MAX_SEQ(s)      ((s) << 20) /* maximum sequence number */
+#define QH_INFO3_MAX_DELAY(d)    ((d) << 0)  /* maximum stream delay in 125 us units (isoc only) */
+#define QH_INFO3_INTERVAL(i)     ((i) << 16) /* segment interval in 125 us units (isoc only) */
+
+#define QH_INFO3_TX_RATE_53_3    (0 << 24)
+#define QH_INFO3_TX_RATE_80      (1 << 24)
+#define QH_INFO3_TX_RATE_106_7   (2 << 24)
+#define QH_INFO3_TX_RATE_160     (3 << 24)
+#define QH_INFO3_TX_RATE_200     (4 << 24)
+#define QH_INFO3_TX_RATE_320     (5 << 24)
+#define QH_INFO3_TX_RATE_400     (6 << 24)
+#define QH_INFO3_TX_RATE_480     (7 << 24)
+#define QH_INFO3_TX_PWR(p)       ((p) << 29) /* transmit power (see [WUSB] section 5.2.1.2) */
+
+#define QH_STATUS_FLOW_CTRL      (1 << 15)
+#define QH_STATUS_ICUR(i)        ((i) << 5)
+#define QH_STATUS_TO_ICUR(s)     (((s) >> 5) & 0x7)
+
+/**
+ * usb_pipe_to_qh_type - USB core pipe type to QH transfer type
+ *
+ * Returns the QH type field for a USB core pipe type.
+ */
+static inline unsigned usb_pipe_to_qh_type(unsigned pipe)
+{
+        static const unsigned type[] = {
+                [PIPE_ISOCHRONOUS] = QH_INFO1_TR_TYPE_ISOC,
+                [PIPE_INTERRUPT]   = QH_INFO1_TR_TYPE_INT,
+                [PIPE_CONTROL]     = QH_INFO1_TR_TYPE_CTRL,
+                [PIPE_BULK]        = QH_INFO1_TR_TYPE_BULK,
+        };
+        return type[usb_pipetype(pipe)];
+}
+
+/**
+ * Maxiumum number of TDs in a qset.
+ */
+#define WHCI_QSET_TD_MAX 8
+
+/**
+ * struct whc_qset - WUSB data transfers to a specific endpoint
+ * @qh: the QHead of this qset
+ * @qtd: up to 8 qTDs (for qsets for control, bulk and interrupt
+ * transfers)
+ * @itd: up to 8 iTDs (for qsets for isochronous transfers)
+ * @qset_dma: DMA address for this qset
+ * @whc: WHCI HC this qset is for
+ * @ep: endpoint
+ * @stds: list of sTDs queued to this qset
+ * @ntds: number of qTDs queued (not necessarily the same as nTDs
+ * field in the QH)
+ * @td_start: index of the first qTD in the list
+ * @td_end: index of next free qTD in the list (provided
+ *          ntds < WHCI_QSET_TD_MAX)
+ *
+ * Queue Sets (qsets) are added to the asynchronous schedule list
+ * (ASL) or the periodic zone list (PZL).
+ *
+ * qsets may contain up to 8 TDs (either qTDs or iTDs as appropriate).
+ * Each TD may refer to at most 1 MiB of data. If a single transfer
+ * has > 8MiB of data, TDs can be reused as they are completed since
+ * the TD list is used as a circular buffer.  Similarly, several
+ * (smaller) transfers may be queued in a qset.
+ *
+ * WHCI controllers may cache portions of the qsets in the ASL and
+ * PZL, requiring the WHCD to inform the WHC that the lists have been
+ * updated (fields changed or qsets inserted or removed).  For safe
+ * insertion and removal of qsets from the lists the schedule must be
+ * stopped to avoid races in updating the QH link pointers.
+ *
+ * Since the HC is free to execute qsets in any order, all transfers
+ * to an endpoint should use the same qset to ensure transfers are
+ * executed in the order they're submitted.
+ *
+ * [WHCI] section 3.2.3
+ */
+struct whc_qset {
+        struct whc_qhead qh;
+        union {
+                struct whc_qtd qtd[WHCI_QSET_TD_MAX];
+                struct whc_itd itd[WHCI_QSET_TD_MAX];
+        };
+
+        /* private data for WHCD */
+        dma_addr_t qset_dma;
+        struct whc *whc;
+        struct usb_host_endpoint *ep;
+        struct list_head stds;
+        int ntds;
+        int td_start;
+        int td_end;
+        struct list_head list_node;
+        unsigned in_sw_list:1;
+        unsigned in_hw_list:1;
+        unsigned remove:1;
+        struct urb *pause_after_urb;
+        struct completion remove_complete;
+        int max_burst;
+        int max_seq;
+};
+
+static inline void whc_qset_set_link_ptr(u64 *ptr, u64 target)
+{
+        if (target)
+                *ptr = (*ptr & ~(QH_LINK_PTR_MASK | QH_LINK_T)) | QH_LINK_PTR(target);
+        else
+                *ptr = QH_LINK_T;
+}
+
+/**
+ * struct di_buf_entry - Device Information (DI) buffer entry.
+ *
+ * There's one of these per connected device.
+ */
+struct di_buf_entry {
+        __le32 availability_info[8]; /*< MAS availability information, one MAS per bit */
+        __le32 addr_sec_info;        /*< addressing and security info */
+        __le32 reserved[7];
+} __attribute__((packed));
+
+#define WHC_DI_SECURE           (1 << 31)
+#define WHC_DI_DISABLE          (1 << 30)
+#define WHC_DI_KEY_IDX(k)       ((k) << 8)
+#define WHC_DI_KEY_IDX_MASK     0x0000ff00
+#define WHC_DI_DEV_ADDR(a)      ((a) << 0)
+#define WHC_DI_DEV_ADDR_MASK    0x000000ff
+
+/**
+ * struct dn_buf_entry - Device Notification (DN) buffer entry.
+ *
+ * [WHCI] section 3.2.8
+ */
+struct dn_buf_entry {
+        __u8   msg_size;    /*< number of octets of valid DN data */
+        __u8   reserved1;
+        __u8   src_addr;    /*< source address */
+        __u8   status;      /*< buffer entry status */
+        __le32 tkid;        /*< TKID for source device, valid if secure bit is set */
+        __u8   dn_data[56]; /*< up to 56 octets of DN data */
+} __attribute__((packed));
+
+#define WHC_DN_STATUS_VALID  (1 << 7) /* buffer entry is valid */
+#define WHC_DN_STATUS_SECURE (1 << 6) /* notification received using secure frame */
+
+#define WHC_N_DN_ENTRIES (4096 / sizeof(struct dn_buf_entry))
+
+/* The Add MMC IE WUSB Generic Command may take up to 256 bytes of
+   data. [WHCI] section 2.4.7. */
+#define WHC_GEN_CMD_DATA_LEN 256
+
+/*
+ * HC registers.
+ *
+ * [WHCI] section 2.4
+ */
+
+#define WHCIVERSION          0x00
+
+#define WHCSPARAMS           0x04
+#  define WHCSPARAMS_TO_N_MMC_IES(p) (((p) >> 16) & 0xff)
+#  define WHCSPARAMS_TO_N_KEYS(p)    (((p) >> 8) & 0xff)
+#  define WHCSPARAMS_TO_N_DEVICES(p) (((p) >> 0) & 0x7f)
+
+#define WUSBCMD              0x08
+#  define WUSBCMD_BCID(b)            ((b) << 16)
+#  define WUSBCMD_BCID_MASK          (0xff << 16)
+#  define WUSBCMD_ASYNC_QSET_RM      (1 << 12)
+#  define WUSBCMD_PERIODIC_QSET_RM   (1 << 11)
+#  define WUSBCMD_WUSBSI(s)          ((s) << 8)
+#  define WUSBCMD_WUSBSI_MASK        (0x7 << 8)
+#  define WUSBCMD_ASYNC_SYNCED_DB    (1 << 7)
+#  define WUSBCMD_PERIODIC_SYNCED_DB (1 << 6)
+#  define WUSBCMD_ASYNC_UPDATED      (1 << 5)
+#  define WUSBCMD_PERIODIC_UPDATED   (1 << 4)
+#  define WUSBCMD_ASYNC_EN           (1 << 3)
+#  define WUSBCMD_PERIODIC_EN        (1 << 2)
+#  define WUSBCMD_WHCRESET           (1 << 1)
+#  define WUSBCMD_RUN                (1 << 0)
+
+#define WUSBSTS              0x0c
+#  define WUSBSTS_ASYNC_SCHED             (1 << 15)
+#  define WUSBSTS_PERIODIC_SCHED          (1 << 14)
+#  define WUSBSTS_DNTS_SCHED              (1 << 13)
+#  define WUSBSTS_HCHALTED                (1 << 12)
+#  define WUSBSTS_GEN_CMD_DONE            (1 << 9)
+#  define WUSBSTS_CHAN_TIME_ROLLOVER      (1 << 8)
+#  define WUSBSTS_DNTS_OVERFLOW           (1 << 7)
+#  define WUSBSTS_BPST_ADJUSTMENT_CHANGED (1 << 6)
+#  define WUSBSTS_HOST_ERR                (1 << 5)
+#  define WUSBSTS_ASYNC_SCHED_SYNCED      (1 << 4)
+#  define WUSBSTS_PERIODIC_SCHED_SYNCED   (1 << 3)
+#  define WUSBSTS_DNTS_INT                (1 << 2)
+#  define WUSBSTS_ERR_INT                 (1 << 1)
+#  define WUSBSTS_INT                     (1 << 0)
+#  define WUSBSTS_INT_MASK                0x3ff
+
+#define WUSBINTR             0x10
+#  define WUSBINTR_GEN_CMD_DONE             (1 << 9)
+#  define WUSBINTR_CHAN_TIME_ROLLOVER       (1 << 8)
+#  define WUSBINTR_DNTS_OVERFLOW            (1 << 7)
+#  define WUSBINTR_BPST_ADJUSTMENT_CHANGED  (1 << 6)
+#  define WUSBINTR_HOST_ERR                 (1 << 5)
+#  define WUSBINTR_ASYNC_SCHED_SYNCED       (1 << 4)
+#  define WUSBINTR_PERIODIC_SCHED_SYNCED    (1 << 3)
+#  define WUSBINTR_DNTS_INT                 (1 << 2)
+#  define WUSBINTR_ERR_INT                  (1 << 1)
+#  define WUSBINTR_INT                      (1 << 0)
+#  define WUSBINTR_ALL 0x3ff
+
+#define WUSBGENCMDSTS        0x14
+#  define WUSBGENCMDSTS_ACTIVE (1 << 31)
+#  define WUSBGENCMDSTS_ERROR  (1 << 24)
+#  define WUSBGENCMDSTS_IOC    (1 << 23)
+#  define WUSBGENCMDSTS_MMCIE_ADD 0x01
+#  define WUSBGENCMDSTS_MMCIE_RM  0x02
+#  define WUSBGENCMDSTS_SET_MAS   0x03
+#  define WUSBGENCMDSTS_CHAN_STOP 0x04
+#  define WUSBGENCMDSTS_RWP_EN    0x05
+
+#define WUSBGENCMDPARAMS     0x18
+#define WUSBGENADDR          0x20
+#define WUSBASYNCLISTADDR    0x28
+#define WUSBDNTSBUFADDR      0x30
+#define WUSBDEVICEINFOADDR   0x38
+
+#define WUSBSETSECKEYCMD     0x40
+#  define WUSBSETSECKEYCMD_SET    (1 << 31)
+#  define WUSBSETSECKEYCMD_ERASE  (1 << 30)
+#  define WUSBSETSECKEYCMD_GTK    (1 << 8)
+#  define WUSBSETSECKEYCMD_IDX(i) ((i) << 0)
+
+#define WUSBTKID             0x44
+#define WUSBSECKEY           0x48
+#define WUSBPERIODICLISTBASE 0x58
+#define WUSBMASINDEX         0x60
+
+#define WUSBDNTSCTRL         0x64
+#  define WUSBDNTSCTRL_ACTIVE      (1 << 31)
+#  define WUSBDNTSCTRL_INTERVAL(i) ((i) << 8)
+#  define WUSBDNTSCTRL_SLOTS(s)    ((s) << 0)
+
+#define WUSBTIME             0x68
+#define WUSBBPST             0x6c
+#define WUSBDIBUPDATED       0x70
+
+#endif /* #ifndef _WHCI_WHCI_HC_H */
diff --git a/drivers/usb/host/whci/wusb.c b/drivers/usb/host/whci/wusb.c
new file mode 100644
index 000000000000..66e4ddcd961d
--- /dev/null
+++ b/drivers/usb/host/whci/wusb.c
@@ -0,0 +1,241 @@
+/*
+ * Wireless Host Controller (WHC) WUSB operations.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/version.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/uwb/umc.h>
+#define D_LOCAL 1
+#include <linux/uwb/debug.h>
+
+#include "../../wusbcore/wusbhc.h"
+
+#include "whcd.h"
+
+#if D_LOCAL >= 1
+static void dump_di(struct whc *whc, int idx)
+{
+        struct di_buf_entry *di = &whc->di_buf[idx];
+        struct device *dev = &whc->umc->dev;
+        char buf[128];
+
+        bitmap_scnprintf(buf, sizeof(buf), (unsigned long *)di->availability_info, UWB_NUM_MAS);
+
+        d_printf(1, dev, "DI[%d]\n", idx);
+        d_printf(1, dev, "  availability: %s\n", buf);
+        d_printf(1, dev, "  %c%c key idx: %d dev addr: %d\n",
+                 (di->addr_sec_info & WHC_DI_SECURE) ? 'S' : ' ',
+                 (di->addr_sec_info & WHC_DI_DISABLE) ? 'D' : ' ',
+                 (di->addr_sec_info & WHC_DI_KEY_IDX_MASK) >> 8,
+                 (di->addr_sec_info & WHC_DI_DEV_ADDR_MASK));
+}
+#else
+static inline void dump_di(struct whc *whc, int idx)
+{
+}
+#endif
+
+static int whc_update_di(struct whc *whc, int idx)
+{
+        int offset = idx / 32;
+        u32 bit = 1 << (idx % 32);
+
+        dump_di(whc, idx);
+
+        le_writel(bit, whc->base + WUSBDIBUPDATED + offset);
+
+        return whci_wait_for(&whc->umc->dev,
+                             whc->base + WUSBDIBUPDATED + offset, bit, 0,
+                             100, "DI update");
+}
+
+/*
+ * WHCI starts and stops MMCs based on there being a valid GTK so
+ * these need only start/stop the asynchronous and periodic schedules.
+ */
+
+int whc_wusbhc_start(struct wusbhc *wusbhc)
+{
+        struct whc *whc = wusbhc_to_whc(wusbhc);
+
+        asl_start(whc);
+        pzl_start(whc);
+
+        return 0;
+}
+
+void whc_wusbhc_stop(struct wusbhc *wusbhc)
+{
+        struct whc *whc = wusbhc_to_whc(wusbhc);
+
+        pzl_stop(whc);
+        asl_stop(whc);
+}
+
+int whc_mmcie_add(struct wusbhc *wusbhc, u8 interval, u8 repeat_cnt,
+                  u8 handle, struct wuie_hdr *wuie)
+{
+        struct whc *whc = wusbhc_to_whc(wusbhc);
+        u32 params;
+
+        params = (interval << 24)
+                | (repeat_cnt << 16)
+                | (wuie->bLength << 8)
+                | handle;
+
+        return whc_do_gencmd(whc, WUSBGENCMDSTS_MMCIE_ADD, params, wuie, wuie->bLength);
+}
+
+int whc_mmcie_rm(struct wusbhc *wusbhc, u8 handle)
+{
+        struct whc *whc = wusbhc_to_whc(wusbhc);
+        u32 params;
+
+        params = handle;
+
+        return whc_do_gencmd(whc, WUSBGENCMDSTS_MMCIE_RM, params, NULL, 0);
+}
+
+int whc_bwa_set(struct wusbhc *wusbhc, s8 stream_index, const struct uwb_mas_bm *mas_bm)
+{
+        struct whc *whc = wusbhc_to_whc(wusbhc);
+
+        if (stream_index >= 0)
+                whc_write_wusbcmd(whc, WUSBCMD_WUSBSI_MASK, WUSBCMD_WUSBSI(stream_index));
+
+        return whc_do_gencmd(whc, WUSBGENCMDSTS_SET_MAS, 0, (void *)mas_bm, sizeof(*mas_bm));
+}
+
+int whc_dev_info_set(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev)
+{
+        struct whc *whc = wusbhc_to_whc(wusbhc);
+        int idx = wusb_dev->port_idx;
+        struct di_buf_entry *di = &whc->di_buf[idx];
+        int ret;
+
+        mutex_lock(&whc->mutex);
+
+        uwb_mas_bm_copy_le(di->availability_info, &wusb_dev->availability);
+        di->addr_sec_info &= ~(WHC_DI_DISABLE | WHC_DI_DEV_ADDR_MASK);
+        di->addr_sec_info |= WHC_DI_DEV_ADDR(wusb_dev->addr);
+
+        ret = whc_update_di(whc, idx);
+
+        mutex_unlock(&whc->mutex);
+
+        return ret;
+}
+
+/*
+ * Set the number of Device Notification Time Slots (DNTS) and enable
+ * device notifications.
+ */
+int whc_set_num_dnts(struct wusbhc *wusbhc, u8 interval, u8 slots)
+{
+        struct whc *whc = wusbhc_to_whc(wusbhc);
+        u32 dntsctrl;
+
+        dntsctrl = WUSBDNTSCTRL_ACTIVE
+                | WUSBDNTSCTRL_INTERVAL(interval)
+                | WUSBDNTSCTRL_SLOTS(slots);
+
+        le_writel(dntsctrl, whc->base + WUSBDNTSCTRL);
+
+        return 0;
+}
+
+static int whc_set_key(struct whc *whc, u8 key_index, uint32_t tkid,
+                       const void *key, size_t key_size, bool is_gtk)
+{
+        uint32_t setkeycmd;
+        uint32_t seckey[4];
+        int i;
+        int ret;
+
+        memcpy(seckey, key, key_size);
+        setkeycmd = WUSBSETSECKEYCMD_SET | WUSBSETSECKEYCMD_IDX(key_index);
+        if (is_gtk)
+                setkeycmd |= WUSBSETSECKEYCMD_GTK;
+
+        le_writel(tkid, whc->base + WUSBTKID);
+        for (i = 0; i < 4; i++)
+                le_writel(seckey[i], whc->base + WUSBSECKEY + 4*i);
+        le_writel(setkeycmd, whc->base + WUSBSETSECKEYCMD);
+
+        ret = whci_wait_for(&whc->umc->dev, whc->base + WUSBSETSECKEYCMD,
+                            WUSBSETSECKEYCMD_SET, 0, 100, "set key");
+
+        return ret;
+}
+
+/**
+ * whc_set_ptk - set the PTK to use for a device.
+ *
+ * The index into the key table for this PTK is the same as the
+ * device's port index.
+ */
+int whc_set_ptk(struct wusbhc *wusbhc, u8 port_idx, u32 tkid,
+                const void *ptk, size_t key_size)
+{
+        struct whc *whc = wusbhc_to_whc(wusbhc);
+        struct di_buf_entry *di = &whc->di_buf[port_idx];
+        int ret;
+
+        mutex_lock(&whc->mutex);
+
+        if (ptk) {
+                ret = whc_set_key(whc, port_idx, tkid, ptk, key_size, false);
+                if (ret)
+                        goto out;
+
+                di->addr_sec_info &= ~WHC_DI_KEY_IDX_MASK;
+                di->addr_sec_info |= WHC_DI_SECURE | WHC_DI_KEY_IDX(port_idx);
+        } else
+                di->addr_sec_info &= ~WHC_DI_SECURE;
+
+        ret = whc_update_di(whc, port_idx);
+out:
+        mutex_unlock(&whc->mutex);
+        return ret;
+}
+
+/**
+ * whc_set_gtk - set the GTK for subsequent broadcast packets
+ *
+ * The GTK is stored in the last entry in the key table (the previous
+ * N_DEVICES entries are for the per-device PTKs).
+ */
+int whc_set_gtk(struct wusbhc *wusbhc, u32 tkid,
+                const void *gtk, size_t key_size)
+{
+        struct whc *whc = wusbhc_to_whc(wusbhc);
+        int ret;
+
+        mutex_lock(&whc->mutex);
+
+        ret = whc_set_key(whc, whc->n_devices, tkid, gtk, key_size, true);
+
+        mutex_unlock(&whc->mutex);
+
+        return ret;
+}
+
+int whc_set_cluster_id(struct whc *whc, u8 bcid)
+{
+        whc_write_wusbcmd(whc, WUSBCMD_BCID_MASK, WUSBCMD_BCID(bcid));
+        return 0;
+}
diff --git a/drivers/usb/wusbcore/Kconfig b/drivers/usb/wusbcore/Kconfig
new file mode 100644
index 000000000000..eb09a0a14a80
--- /dev/null
+++ b/drivers/usb/wusbcore/Kconfig
@@ -0,0 +1,41 @@
+#
+# Wireless USB Core configuration
+#
+config USB_WUSB
+        tristate "Enable Wireless USB extensions (EXPERIMENTAL)"
+        depends on EXPERIMENTAL
+        depends on USB
+        select UWB
+        select CRYPTO
+        select CRYPTO_BLKCIPHER
+        select CRYPTO_CBC
+        select CRYPTO_MANAGER
+        select CRYPTO_AES
+        help
+          Enable the host-side support for Wireless USB.
+
+          To compile this support select Y (built in). It is safe to
+          select even if you don't have the hardware.
+
+config USB_WUSB_CBAF
+        tristate "Support WUSB Cable Based Association (CBA)"
+        depends on USB
+        help
+          Some WUSB devices support Cable Based Association. It's used to
+          enable the secure communication between the host and the
+          device.
+
+          Enable this option if your WUSB device must to be connected
+          via wired USB before establishing a wireless link.
+
+          It is safe to select even if you don't have a compatible
+          hardware.
+
+config USB_WUSB_CBAF_DEBUG
+        bool "Enable CBA debug messages"
+        depends on USB_WUSB_CBAF
+        help
+          Say Y here if you want the CBA to produce a bunch of debug messages
+          to the system log. Select this if you are having a problem with
+          CBA support and want to see more of what is going on.
+
diff --git a/drivers/usb/wusbcore/Makefile b/drivers/usb/wusbcore/Makefile
new file mode 100644
index 000000000000..75f1ade66258
--- /dev/null
+++ b/drivers/usb/wusbcore/Makefile
@@ -0,0 +1,26 @@
+obj-$(CONFIG_USB_WUSB)          += wusbcore.o
+obj-$(CONFIG_USB_HWA_HCD)       += wusb-wa.o
+obj-$(CONFIG_USB_WUSB_CBAF)     += wusb-cbaf.o
+
+
+wusbcore-objs :=        \
+        crypto.o        \
+        devconnect.o    \
+        dev-sysfs.o     \
+        mmc.o           \
+        pal.o           \
+        rh.o            \
+        reservation.o   \
+        security.o      \
+        wusbhc.o
+
+wusb-cbaf-objs := cbaf.o
+
+wusb-wa-objs := wa-hc.o         \
+                wa-nep.o        \
+                wa-rpipe.o      \
+                wa-xfer.o
+
+ifeq ($(CONFIG_USB_WUSB_CBAF_DEBUG),y)
+EXTRA_CFLAGS += -DDEBUG
+endif
diff --git a/drivers/usb/wusbcore/cbaf.c b/drivers/usb/wusbcore/cbaf.c
new file mode 100644
index 000000000000..ab4788d1785a
--- /dev/null
+++ b/drivers/usb/wusbcore/cbaf.c
@@ -0,0 +1,673 @@
+/*
+ * Wireless USB - Cable Based Association
+ *
+ *
+ * Copyright (C) 2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ * Copyright (C) 2008 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * WUSB devices have to be paired (associated in WUSB lingo) so
+ * that they can connect to the system.
+ *
+ * One way of pairing is using CBA-Cable Based Association. First
+ * time you plug the device with a cable, association is done between
+ * host and device and subsequent times, you can connect wirelessly
+ * without having to associate again. That's the idea.
+ *
+ * This driver does nothing Earth shattering. It just provides an
+ * interface to chat with the wire-connected device so we can get a
+ * CDID (device ID) that might have been previously associated to a
+ * CHID (host ID) and to set up a new <CHID,CDID,CK> triplet
+ * (connection context), with the CK being the secret, or connection
+ * key. This is the pairing data.
+ *
+ * When a device with the CBA capability connects, the probe routine
+ * just creates a bunch of sysfs files that a user space enumeration
+ * manager uses to allow it to connect wirelessly to the system or not.
+ *
+ * The process goes like this:
+ *
+ * 1. Device plugs, cbaf is loaded, notifications happen.
+ *
+ * 2. The connection manager (CM) sees a device with CBAF capability
+ *    (the wusb_chid etc. files in /sys/devices/blah/OURDEVICE).
+ *
+ * 3. The CM writes the host name, supported band groups, and the CHID
+ *    (host ID) into the wusb_host_name, wusb_host_band_groups and
+ *    wusb_chid files. These get sent to the device and the CDID (if
+ *    any) for this host is requested.
+ *
+ * 4. The CM can verify that the device's supported band groups
+ *    (wusb_device_band_groups) are compatible with the host.
+ *
+ * 5. The CM reads the wusb_cdid file.
+ *
+ * 6. The CM looks up its database
+ *
+ * 6.1 If it has a matching CHID,CDID entry, the device has been
+ *     authorized before (paired) and nothing further needs to be
+ *     done.
+ *
+ * 6.2 If the CDID is zero (or the CM doesn't find a matching CDID in
+ *     its database), the device is assumed to be not known.  The CM
+ *     may associate the host with device by: writing a randomly
+ *     generated CDID to wusb_cdid and then a random CK to wusb_ck
+ *     (this uploads the new CC to the device).
+ *
+ *     CMD may choose to prompt the user before associating with a new
+ *     device.
+ *
+ * 7. Device is unplugged.
+ *
+ * When the device tries to connect wirelessly, it will present its
+ * CDID to the WUSB host controller.  The CM will query the
+ * database. If the CHID/CDID pair found, it will (with a 4-way
+ * handshake) challenge the device to demonstrate it has the CK secret
+ * key (from our database) without actually exchanging it. Once
+ * satisfied, crypto keys are derived from the CK, the device is
+ * connected and all communication is encrypted.
+ *
+ * References:
+ *   [WUSB-AM] Association Models Supplement to the Certified Wireless
+ *             Universal Serial Bus Specification, version 1.0.
+ */
+#include <linux/module.h>
+#include <linux/ctype.h>
+#include <linux/version.h>
+#include <linux/usb.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/random.h>
+#include <linux/mutex.h>
+#include <linux/uwb.h>
+#include <linux/usb/wusb.h>
+#include <linux/usb/association.h>
+
+#define CBA_NAME_LEN 0x40 /* [WUSB-AM] table 4-7 */
+
+/* An instance of a Cable-Based-Association-Framework device */
+struct cbaf {
+        struct usb_device *usb_dev;
+        struct usb_interface *usb_iface;
+        void *buffer;
+        size_t buffer_size;
+
+        struct wusb_ckhdid chid;
+        char host_name[CBA_NAME_LEN];
+        u16 host_band_groups;
+
+        struct wusb_ckhdid cdid;
+        char device_name[CBA_NAME_LEN];
+        u16 device_band_groups;
+
+        struct wusb_ckhdid ck;
+};
+
+/*
+ * Verify that a CBAF USB-interface has what we need
+ *
+ * According to [WUSB-AM], CBA devices should provide at least two
+ * interfaces:
+ *  - RETRIEVE_HOST_INFO
+ *  - ASSOCIATE
+ *
+ * If the device doesn't provide these interfaces, we do not know how
+ * to deal with it.
+ */
+static int cbaf_check(struct cbaf *cbaf)
+{
+        int result;
+        struct device *dev = &cbaf->usb_iface->dev;
+        struct wusb_cbaf_assoc_info *assoc_info;
+        struct wusb_cbaf_assoc_request *assoc_request;
+        size_t assoc_size;
+        void *itr, *top;
+        int ar_rhi = 0, ar_assoc = 0;
+
+        result = usb_control_msg(
+                cbaf->usb_dev, usb_rcvctrlpipe(cbaf->usb_dev, 0),
+                CBAF_REQ_GET_ASSOCIATION_INFORMATION,
+                USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+                0, cbaf->usb_iface->cur_altsetting->desc.bInterfaceNumber,
+                cbaf->buffer, cbaf->buffer_size, 1000 /* FIXME: arbitrary */);
+        if (result < 0) {
+                dev_err(dev, "Cannot get available association types: %d\n",
+                        result);
+                return result;
+        }
+
+        assoc_info = cbaf->buffer;
+        if (result < sizeof(*assoc_info)) {
+                dev_err(dev, "Not enough data to decode association info "
+                        "header (%zu vs %zu bytes required)\n",
+                        (size_t)result, sizeof(*assoc_info));
+                return result;
+        }
+
+        assoc_size = le16_to_cpu(assoc_info->Length);
+        if (result < assoc_size) {
+                dev_err(dev, "Not enough data to decode association info "
+                        "(%zu vs %zu bytes required)\n",
+                        (size_t)assoc_size, sizeof(*assoc_info));
+                return result;
+        }
+        /*
+         * From now on, we just verify, but won't error out unless we
+         * don't find the AR_TYPE_WUSB_{RETRIEVE_HOST_INFO,ASSOCIATE}
+         * types.
+         */
+        itr = cbaf->buffer + sizeof(*assoc_info);
+        top = cbaf->buffer + assoc_size;
+        dev_dbg(dev, "Found %u association requests (%zu bytes)\n",
+                 assoc_info->NumAssociationRequests, assoc_size);
+
+        while (itr < top) {
+                u16 ar_type, ar_subtype;
+                u32 ar_size;
+                const char *ar_name;
+
+                assoc_request = itr;
+
+                if (top - itr < sizeof(*assoc_request)) {
+                        dev_err(dev, "Not enough data to decode associaton "
+                                "request (%zu vs %zu bytes needed)\n",
+                                top - itr, sizeof(*assoc_request));
+                        break;
+                }
+
+                ar_type = le16_to_cpu(assoc_request->AssociationTypeId);
+                ar_subtype = le16_to_cpu(assoc_request->AssociationSubTypeId);
+                ar_size = le32_to_cpu(assoc_request->AssociationTypeInfoSize);
+                ar_name = "unknown";
+
+                switch (ar_type) {
+                case AR_TYPE_WUSB:
+                        /* Verify we have what is mandated by [WUSB-AM]. */
+                        switch (ar_subtype) {
+                        case AR_TYPE_WUSB_RETRIEVE_HOST_INFO:
+                                ar_name = "RETRIEVE_HOST_INFO";
+                                ar_rhi = 1;
+                                break;
+                        case AR_TYPE_WUSB_ASSOCIATE:
+                                /* send assoc data */
+                                ar_name = "ASSOCIATE";
+                                ar_assoc = 1;
+                                break;
+                        };
+                        break;
+                };
+
+                dev_dbg(dev, "Association request #%02u: 0x%04x/%04x "
+                         "(%zu bytes): %s\n",
+                         assoc_request->AssociationDataIndex, ar_type,
+                         ar_subtype, (size_t)ar_size, ar_name);
+
+                itr += sizeof(*assoc_request);
+        }
+
+        if (!ar_rhi) {
+                dev_err(dev, "Missing RETRIEVE_HOST_INFO association "
+                        "request\n");
+                return -EINVAL;
+        }
+        if (!ar_assoc) {
+                dev_err(dev, "Missing ASSOCIATE association request\n");
+                return -EINVAL;
+        }
+
+        return 0;
+}
+
+static const struct wusb_cbaf_host_info cbaf_host_info_defaults = {
+        .AssociationTypeId_hdr    = WUSB_AR_AssociationTypeId,
+        .AssociationTypeId        = cpu_to_le16(AR_TYPE_WUSB),
+        .AssociationSubTypeId_hdr = WUSB_AR_AssociationSubTypeId,
+        .AssociationSubTypeId = cpu_to_le16(AR_TYPE_WUSB_RETRIEVE_HOST_INFO),
+        .CHID_hdr                 = WUSB_AR_CHID,
+        .LangID_hdr               = WUSB_AR_LangID,
+        .HostFriendlyName_hdr     = WUSB_AR_HostFriendlyName,
+};
+
+/* Send WUSB host information (CHID and name) to a CBAF device */
+static int cbaf_send_host_info(struct cbaf *cbaf)
+{
+        struct wusb_cbaf_host_info *hi;
+        size_t name_len;
+        size_t hi_size;
+
+        hi = cbaf->buffer;
+        memset(hi, 0, sizeof(*hi));
+        *hi = cbaf_host_info_defaults;
+        hi->CHID = cbaf->chid;
+        hi->LangID = 0; /* FIXME: I guess... */
+        strlcpy(hi->HostFriendlyName, cbaf->host_name, CBA_NAME_LEN);
+        name_len = strlen(cbaf->host_name);
+        hi->HostFriendlyName_hdr.len = cpu_to_le16(name_len);
+        hi_size = sizeof(*hi) + name_len;
+
+        return usb_control_msg(cbaf->usb_dev, usb_sndctrlpipe(cbaf->usb_dev, 0),
+                        CBAF_REQ_SET_ASSOCIATION_RESPONSE,
+                        USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+                        0x0101,
+                        cbaf->usb_iface->cur_altsetting->desc.bInterfaceNumber,
+                        hi, hi_size, 1000 /* FIXME: arbitrary */);
+}
+
+/*
+ * Get device's information (CDID) associated to CHID
+ *
+ * The device will return it's information (CDID, name, bandgroups)
+ * associated to the CHID we have set before, or 0 CDID and default
+ * name and bandgroup if no CHID set or unknown.
+ */
+static int cbaf_cdid_get(struct cbaf *cbaf)
+{
+        int result;
+        struct device *dev = &cbaf->usb_iface->dev;
+        struct wusb_cbaf_device_info *di;
+        size_t needed;
+
+        di = cbaf->buffer;
+        result = usb_control_msg(
+                cbaf->usb_dev, usb_rcvctrlpipe(cbaf->usb_dev, 0),
+                CBAF_REQ_GET_ASSOCIATION_REQUEST,
+                USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+                0x0200, cbaf->usb_iface->cur_altsetting->desc.bInterfaceNumber,
+                di, cbaf->buffer_size, 1000 /* FIXME: arbitrary */);
+        if (result < 0) {
+                dev_err(dev, "Cannot request device information: %d\n", result);
+                return result;
+        }
+
+        needed = result < sizeof(*di) ? sizeof(*di) : le32_to_cpu(di->Length);
+        if (result < needed) {
+                dev_err(dev, "Not enough data in DEVICE_INFO reply (%zu vs "
+                        "%zu bytes needed)\n", (size_t)result, needed);
+                return result;
+        }
+
+        strlcpy(cbaf->device_name, di->DeviceFriendlyName, CBA_NAME_LEN);
+        cbaf->cdid = di->CDID;
+        cbaf->device_band_groups = le16_to_cpu(di->BandGroups);
+
+        return 0;
+}
+
+static ssize_t cbaf_wusb_chid_show(struct device *dev,
+                                        struct device_attribute *attr,
+                                        char *buf)
+{
+        struct usb_interface *iface = to_usb_interface(dev);
+        struct cbaf *cbaf = usb_get_intfdata(iface);
+        char pr_chid[WUSB_CKHDID_STRSIZE];
+
+        ckhdid_printf(pr_chid, sizeof(pr_chid), &cbaf->chid);
+        return scnprintf(buf, PAGE_SIZE, "%s\n", pr_chid);
+}
+
+static ssize_t cbaf_wusb_chid_store(struct device *dev,
+                                         struct device_attribute *attr,
+                                         const char *buf, size_t size)
+{
+        ssize_t result;
+        struct usb_interface *iface = to_usb_interface(dev);
+        struct cbaf *cbaf = usb_get_intfdata(iface);
+
+        result = sscanf(buf,
+                        "%02hhx %02hhx %02hhx %02hhx "
+                        "%02hhx %02hhx %02hhx %02hhx "
+                        "%02hhx %02hhx %02hhx %02hhx "
+                        "%02hhx %02hhx %02hhx %02hhx",
+                        &cbaf->chid.data[0] , &cbaf->chid.data[1],
+                        &cbaf->chid.data[2] , &cbaf->chid.data[3],
+                        &cbaf->chid.data[4] , &cbaf->chid.data[5],
+                        &cbaf->chid.data[6] , &cbaf->chid.data[7],
+                        &cbaf->chid.data[8] , &cbaf->chid.data[9],
+                        &cbaf->chid.data[10], &cbaf->chid.data[11],
+                        &cbaf->chid.data[12], &cbaf->chid.data[13],
+                        &cbaf->chid.data[14], &cbaf->chid.data[15]);
+
+        if (result != 16)
+                return -EINVAL;
+
+        result = cbaf_send_host_info(cbaf);
+        if (result < 0)
+                return result;
+        result = cbaf_cdid_get(cbaf);
+        if (result < 0)
+                return -result;
+        return size;
+}
+static DEVICE_ATTR(wusb_chid, 0600, cbaf_wusb_chid_show, cbaf_wusb_chid_store);
+
+static ssize_t cbaf_wusb_host_name_show(struct device *dev,
+                                        struct device_attribute *attr,
+                                        char *buf)
+{
+        struct usb_interface *iface = to_usb_interface(dev);
+        struct cbaf *cbaf = usb_get_intfdata(iface);
+
+        return scnprintf(buf, PAGE_SIZE, "%s\n", cbaf->host_name);
+}
+
+static ssize_t cbaf_wusb_host_name_store(struct device *dev,
+                                         struct device_attribute *attr,
+                                         const char *buf, size_t size)
+{
+        ssize_t result;
+        struct usb_interface *iface = to_usb_interface(dev);
+        struct cbaf *cbaf = usb_get_intfdata(iface);
+
+        result = sscanf(buf, "%63s", cbaf->host_name);
+        if (result != 1)
+                return -EINVAL;
+
+        return size;
+}
+static DEVICE_ATTR(wusb_host_name, 0600, cbaf_wusb_host_name_show,
+                                         cbaf_wusb_host_name_store);
+
+static ssize_t cbaf_wusb_host_band_groups_show(struct device *dev,
+                                               struct device_attribute *attr,
+                                               char *buf)
+{
+        struct usb_interface *iface = to_usb_interface(dev);
+        struct cbaf *cbaf = usb_get_intfdata(iface);
+
+        return scnprintf(buf, PAGE_SIZE, "0x%04x\n", cbaf->host_band_groups);
+}
+
+static ssize_t cbaf_wusb_host_band_groups_store(struct device *dev,
+                                                struct device_attribute *attr,
+                                                const char *buf, size_t size)
+{
+        ssize_t result;
+        struct usb_interface *iface = to_usb_interface(dev);
+        struct cbaf *cbaf = usb_get_intfdata(iface);
+        u16 band_groups = 0;
+
+        result = sscanf(buf, "%04hx", &band_groups);
+        if (result != 1)
+                return -EINVAL;
+
+        cbaf->host_band_groups = band_groups;
+
+        return size;
+}
+
+static DEVICE_ATTR(wusb_host_band_groups, 0600,
+                   cbaf_wusb_host_band_groups_show,
+                   cbaf_wusb_host_band_groups_store);
+
+static const struct wusb_cbaf_device_info cbaf_device_info_defaults = {
+        .Length_hdr               = WUSB_AR_Length,
+        .CDID_hdr                 = WUSB_AR_CDID,
+        .BandGroups_hdr           = WUSB_AR_BandGroups,
+        .LangID_hdr               = WUSB_AR_LangID,
+        .DeviceFriendlyName_hdr   = WUSB_AR_DeviceFriendlyName,
+};
+
+static ssize_t cbaf_wusb_cdid_show(struct device *dev,
+                                   struct device_attribute *attr, char *buf)
+{
+        struct usb_interface *iface = to_usb_interface(dev);
+        struct cbaf *cbaf = usb_get_intfdata(iface);
+        char pr_cdid[WUSB_CKHDID_STRSIZE];
+
+        ckhdid_printf(pr_cdid, sizeof(pr_cdid), &cbaf->cdid);
+        return scnprintf(buf, PAGE_SIZE, "%s\n", pr_cdid);
+}
+
+static ssize_t cbaf_wusb_cdid_store(struct device *dev,
+                                struct device_attribute *attr,
+                                const char *buf, size_t size)
+{
+        ssize_t result;
+        struct usb_interface *iface = to_usb_interface(dev);
+        struct cbaf *cbaf = usb_get_intfdata(iface);
+        struct wusb_ckhdid cdid;
+
+        result = sscanf(buf,
+                        "%02hhx %02hhx %02hhx %02hhx "
+                        "%02hhx %02hhx %02hhx %02hhx "
+                        "%02hhx %02hhx %02hhx %02hhx "
+                        "%02hhx %02hhx %02hhx %02hhx",
+                        &cdid.data[0] , &cdid.data[1],
+                        &cdid.data[2] , &cdid.data[3],
+                        &cdid.data[4] , &cdid.data[5],
+                        &cdid.data[6] , &cdid.data[7],
+                        &cdid.data[8] , &cdid.data[9],
+                        &cdid.data[10], &cdid.data[11],
+                        &cdid.data[12], &cdid.data[13],
+                        &cdid.data[14], &cdid.data[15]);
+        if (result != 16)
+                return -EINVAL;
+
+        cbaf->cdid = cdid;
+
+        return size;
+}
+static DEVICE_ATTR(wusb_cdid, 0600, cbaf_wusb_cdid_show, cbaf_wusb_cdid_store);
+
+static ssize_t cbaf_wusb_device_band_groups_show(struct device *dev,
+                                                 struct device_attribute *attr,
+                                                 char *buf)
+{
+        struct usb_interface *iface = to_usb_interface(dev);
+        struct cbaf *cbaf = usb_get_intfdata(iface);
+
+        return scnprintf(buf, PAGE_SIZE, "0x%04x\n", cbaf->device_band_groups);
+}
+
+static DEVICE_ATTR(wusb_device_band_groups, 0600,
+                   cbaf_wusb_device_band_groups_show,
+                   NULL);
+
+static ssize_t cbaf_wusb_device_name_show(struct device *dev,
+                                        struct device_attribute *attr,
+                                        char *buf)
+{
+        struct usb_interface *iface = to_usb_interface(dev);
+        struct cbaf *cbaf = usb_get_intfdata(iface);
+
+        return scnprintf(buf, PAGE_SIZE, "%s\n", cbaf->device_name);
+}
+static DEVICE_ATTR(wusb_device_name, 0600, cbaf_wusb_device_name_show, NULL);
+
+static const struct wusb_cbaf_cc_data cbaf_cc_data_defaults = {
+        .AssociationTypeId_hdr    = WUSB_AR_AssociationTypeId,
+        .AssociationTypeId        = cpu_to_le16(AR_TYPE_WUSB),
+        .AssociationSubTypeId_hdr = WUSB_AR_AssociationSubTypeId,
+        .AssociationSubTypeId     = cpu_to_le16(AR_TYPE_WUSB_ASSOCIATE),
+        .Length_hdr               = WUSB_AR_Length,
+        .Length                   = cpu_to_le32(sizeof(struct wusb_cbaf_cc_data)),
+        .ConnectionContext_hdr    = WUSB_AR_ConnectionContext,
+        .BandGroups_hdr           = WUSB_AR_BandGroups,
+};
+
+static const struct wusb_cbaf_cc_data_fail cbaf_cc_data_fail_defaults = {
+        .AssociationTypeId_hdr    = WUSB_AR_AssociationTypeId,
+        .AssociationSubTypeId_hdr = WUSB_AR_AssociationSubTypeId,
+        .Length_hdr               = WUSB_AR_Length,
+        .AssociationStatus_hdr    = WUSB_AR_AssociationStatus,
+};
+
+/*
+ * Send a new CC to the device.
+ */
+static int cbaf_cc_upload(struct cbaf *cbaf)
+{
+        int result;
+        struct device *dev = &cbaf->usb_iface->dev;
+        struct wusb_cbaf_cc_data *ccd;
+        char pr_cdid[WUSB_CKHDID_STRSIZE];
+
+        ccd =  cbaf->buffer;
+        *ccd = cbaf_cc_data_defaults;
+        ccd->CHID = cbaf->chid;
+        ccd->CDID = cbaf->cdid;
+        ccd->CK = cbaf->ck;
+        ccd->BandGroups = cpu_to_le16(cbaf->host_band_groups);
+
+        dev_dbg(dev, "Trying to upload CC:\n");
+        ckhdid_printf(pr_cdid, sizeof(pr_cdid), &ccd->CHID);
+        dev_dbg(dev, "  CHID       %s\n", pr_cdid);
+        ckhdid_printf(pr_cdid, sizeof(pr_cdid), &ccd->CDID);
+        dev_dbg(dev, "  CDID       %s\n", pr_cdid);
+        dev_dbg(dev, "  Bandgroups 0x%04x\n", cbaf->host_band_groups);
+
+        result = usb_control_msg(
+                cbaf->usb_dev, usb_sndctrlpipe(cbaf->usb_dev, 0),
+                CBAF_REQ_SET_ASSOCIATION_RESPONSE,
+                USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+                0x0201, cbaf->usb_iface->cur_altsetting->desc.bInterfaceNumber,
+                ccd, sizeof(*ccd), 1000 /* FIXME: arbitrary */);
+
+        return result;
+}
+
+static ssize_t cbaf_wusb_ck_store(struct device *dev,
+                                  struct device_attribute *attr,
+                                  const char *buf, size_t size)
+{
+        ssize_t result;
+        struct usb_interface *iface = to_usb_interface(dev);
+        struct cbaf *cbaf = usb_get_intfdata(iface);
+
+        result = sscanf(buf,
+                        "%02hhx %02hhx %02hhx %02hhx "
+                        "%02hhx %02hhx %02hhx %02hhx "
+                        "%02hhx %02hhx %02hhx %02hhx "
+                        "%02hhx %02hhx %02hhx %02hhx",
+                        &cbaf->ck.data[0] , &cbaf->ck.data[1],
+                        &cbaf->ck.data[2] , &cbaf->ck.data[3],
+                        &cbaf->ck.data[4] , &cbaf->ck.data[5],
+                        &cbaf->ck.data[6] , &cbaf->ck.data[7],
+                        &cbaf->ck.data[8] , &cbaf->ck.data[9],
+                        &cbaf->ck.data[10], &cbaf->ck.data[11],
+                        &cbaf->ck.data[12], &cbaf->ck.data[13],
+                        &cbaf->ck.data[14], &cbaf->ck.data[15]);
+        if (result != 16)
+                return -EINVAL;
+
+        result = cbaf_cc_upload(cbaf);
+        if (result < 0)
+                return result;
+
+        return size;
+}
+static DEVICE_ATTR(wusb_ck, 0600, NULL, cbaf_wusb_ck_store);
+
+static struct attribute *cbaf_dev_attrs[] = {
+        &dev_attr_wusb_host_name.attr,
+        &dev_attr_wusb_host_band_groups.attr,
+        &dev_attr_wusb_chid.attr,
+        &dev_attr_wusb_cdid.attr,
+        &dev_attr_wusb_device_name.attr,
+        &dev_attr_wusb_device_band_groups.attr,
+        &dev_attr_wusb_ck.attr,
+        NULL,
+};
+
+static struct attribute_group cbaf_dev_attr_group = {
+        .name = NULL,   /* we want them in the same directory */
+        .attrs = cbaf_dev_attrs,
+};
+
+static int cbaf_probe(struct usb_interface *iface,
+                      const struct usb_device_id *id)
+{
+        struct cbaf *cbaf;
+        struct device *dev = &iface->dev;
+        int result = -ENOMEM;
+
+        cbaf = kzalloc(sizeof(*cbaf), GFP_KERNEL);
+        if (cbaf == NULL)
+                goto error_kzalloc;
+        cbaf->buffer = kmalloc(512, GFP_KERNEL);
+        if (cbaf->buffer == NULL)
+                goto error_kmalloc_buffer;
+
+        cbaf->buffer_size = 512;
+        cbaf->usb_dev = usb_get_dev(interface_to_usbdev(iface));
+        cbaf->usb_iface = usb_get_intf(iface);
+        result = cbaf_check(cbaf);
+        if (result < 0) {
+                dev_err(dev, "This device is not WUSB-CBAF compliant"
+                        "and is not supported yet.\n");
+                goto error_check;
+        }
+
+        result = sysfs_create_group(&dev->kobj, &cbaf_dev_attr_group);
+        if (result < 0) {
+                dev_err(dev, "Can't register sysfs attr group: %d\n", result);
+                goto error_create_group;
+        }
+        usb_set_intfdata(iface, cbaf);
+        return 0;
+
+error_create_group:
+error_check:
+        kfree(cbaf->buffer);
+error_kmalloc_buffer:
+        kfree(cbaf);
+error_kzalloc:
+        return result;
+}
+
+static void cbaf_disconnect(struct usb_interface *iface)
+{
+        struct cbaf *cbaf = usb_get_intfdata(iface);
+        struct device *dev = &iface->dev;
+        sysfs_remove_group(&dev->kobj, &cbaf_dev_attr_group);
+        usb_set_intfdata(iface, NULL);
+        usb_put_intf(iface);
+        kfree(cbaf->buffer);
+        /* paranoia: clean up crypto keys */
+        memset(cbaf, 0, sizeof(*cbaf));
+        kfree(cbaf);
+}
+
+static struct usb_device_id cbaf_id_table[] = {
+        { USB_INTERFACE_INFO(0xef, 0x03, 0x01), },
+        { },
+};
+MODULE_DEVICE_TABLE(usb, cbaf_id_table);
+
+static struct usb_driver cbaf_driver = {
+        .name =         "wusb-cbaf",
+        .id_table =     cbaf_id_table,
+        .probe =        cbaf_probe,
+        .disconnect =   cbaf_disconnect,
+};
+
+static int __init cbaf_driver_init(void)
+{
+        return usb_register(&cbaf_driver);
+}
+module_init(cbaf_driver_init);
+
+static void __exit cbaf_driver_exit(void)
+{
+        usb_deregister(&cbaf_driver);
+}
+module_exit(cbaf_driver_exit);
+
+MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
+MODULE_DESCRIPTION("Wireless USB Cable Based Association");
+MODULE_LICENSE("GPL");
diff --git a/drivers/usb/wusbcore/crypto.c b/drivers/usb/wusbcore/crypto.c
new file mode 100644
index 000000000000..c36c4389baae
--- /dev/null
+++ b/drivers/usb/wusbcore/crypto.c
@@ -0,0 +1,538 @@
+/*
+ * Ultra Wide Band
+ * AES-128 CCM Encryption
+ *
+ * Copyright (C) 2007 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * We don't do any encryption here; we use the Linux Kernel's AES-128
+ * crypto modules to construct keys and payload blocks in a way
+ * defined by WUSB1.0[6]. Check the erratas, as typos are are patched
+ * there.
+ *
+ * Thanks a zillion to John Keys for his help and clarifications over
+ * the designed-by-a-committee text.
+ *
+ * So the idea is that there is this basic Pseudo-Random-Function
+ * defined in WUSB1.0[6.5] which is the core of everything. It works
+ * by tweaking some blocks, AES crypting them and then xoring
+ * something else with them (this seems to be called CBC(AES) -- can
+ * you tell I know jack about crypto?). So we just funnel it into the
+ * Linux Crypto API.
+ *
+ * We leave a crypto test module so we can verify that vectors match,
+ * every now and then.
+ *
+ * Block size: 16 bytes -- AES seems to do things in 'block sizes'. I
+ *             am learning a lot...
+ *
+ *             Conveniently, some data structures that need to be
+ *             funneled through AES are...16 bytes in size!
+ */
+
+#include <linux/crypto.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/uwb.h>
+#include <linux/usb/wusb.h>
+#include <linux/scatterlist.h>
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+
+/*
+ * Block of data, as understood by AES-CCM
+ *
+ * The code assumes this structure is nothing but a 16 byte array
+ * (packed in a struct to avoid common mess ups that I usually do with
+ * arrays and enforcing type checking).
+ */
+struct aes_ccm_block {
+        u8 data[16];
+} __attribute__((packed));
+
+/*
+ * Counter-mode Blocks (WUSB1.0[6.4])
+ *
+ * According to CCM (or so it seems), for the purpose of calculating
+ * the MIC, the message is broken in N counter-mode blocks, B0, B1,
+ * ... BN.
+ *
+ * B0 contains flags, the CCM nonce and l(m).
+ *
+ * B1 contains l(a), the MAC header, the encryption offset and padding.
+ *
+ * If EO is nonzero, additional blocks are built from payload bytes
+ * until EO is exahusted (FIXME: padding to 16 bytes, I guess). The
+ * padding is not xmitted.
+ */
+
+/* WUSB1.0[T6.4] */
+struct aes_ccm_b0 {
+        u8 flags;       /* 0x59, per CCM spec */
+        struct aes_ccm_nonce ccm_nonce;
+        __be16 lm;
+} __attribute__((packed));
+
+/* WUSB1.0[T6.5] */
+struct aes_ccm_b1 {
+        __be16 la;
+        u8 mac_header[10];
+        __le16 eo;
+        u8 security_reserved;   /* This is always zero */
+        u8 padding;             /* 0 */
+} __attribute__((packed));
+
+/*
+ * Encryption Blocks (WUSB1.0[6.4.4])
+ *
+ * CCM uses Ax blocks to generate a keystream with which the MIC and
+ * the message's payload are encoded. A0 always encrypts/decrypts the
+ * MIC. Ax (x>0) are used for the sucesive payload blocks.
+ *
+ * The x is the counter, and is increased for each block.
+ */
+struct aes_ccm_a {
+        u8 flags;       /* 0x01, per CCM spec */
+        struct aes_ccm_nonce ccm_nonce;
+        __be16 counter; /* Value of x */
+} __attribute__((packed));
+
+static void bytewise_xor(void *_bo, const void *_bi1, const void *_bi2,
+                         size_t size)
+{
+        u8 *bo = _bo;
+        const u8 *bi1 = _bi1, *bi2 = _bi2;
+        size_t itr;
+        for (itr = 0; itr < size; itr++)
+                bo[itr] = bi1[itr] ^ bi2[itr];
+}
+
+/*
+ * CC-MAC function WUSB1.0[6.5]
+ *
+ * Take a data string and produce the encrypted CBC Counter-mode MIC
+ *
+ * Note the names for most function arguments are made to (more or
+ * less) match those used in the pseudo-function definition given in
+ * WUSB1.0[6.5].
+ *
+ * @tfm_cbc: CBC(AES) blkcipher handle (initialized)
+ *
+ * @tfm_aes: AES cipher handle (initialized)
+ *
+ * @mic: buffer for placing the computed MIC (Message Integrity
+ *       Code). This is exactly 8 bytes, and we expect the buffer to
+ *       be at least eight bytes in length.
+ *
+ * @key: 128 bit symmetric key
+ *
+ * @n: CCM nonce
+ *
+ * @a: ASCII string, 14 bytes long (I guess zero padded if needed;
+ *     we use exactly 14 bytes).
+ *
+ * @b: data stream to be processed; cannot be a global or const local
+ *     (will confuse the scatterlists)
+ *
+ * @blen: size of b...
+ *
+ * Still not very clear how this is done, but looks like this: we
+ * create block B0 (as WUSB1.0[6.5] says), then we AES-crypt it with
+ * @key. We bytewise xor B0 with B1 (1) and AES-crypt that. Then we
+ * take the payload and divide it in blocks (16 bytes), xor them with
+ * the previous crypto result (16 bytes) and crypt it, repeat the next
+ * block with the output of the previous one, rinse wash (I guess this
+ * is what AES CBC mode means...but I truly have no idea). So we use
+ * the CBC(AES) blkcipher, that does precisely that. The IV (Initial
+ * Vector) is 16 bytes and is set to zero, so
+ *
+ * See rfc3610. Linux crypto has a CBC implementation, but the
+ * documentation is scarce, to say the least, and the example code is
+ * so intricated that is difficult to understand how things work. Most
+ * of this is guess work -- bite me.
+ *
+ * (1) Created as 6.5 says, again, using as l(a) 'Blen + 14', and
+ *     using the 14 bytes of @a to fill up
+ *     b1.{mac_header,e0,security_reserved,padding}.
+ *
+ * NOTE: The definiton of l(a) in WUSB1.0[6.5] vs the definition of
+ *       l(m) is orthogonal, they bear no relationship, so it is not
+ *       in conflict with the parameter's relation that
+ *       WUSB1.0[6.4.2]) defines.
+ *
+ * NOTE: WUSB1.0[A.1]: Host Nonce is missing a nibble? (1e); fixed in
+ *       first errata released on 2005/07.
+ *
+ * NOTE: we need to clean IV to zero at each invocation to make sure
+ *       we start with a fresh empty Initial Vector, so that the CBC
+ *       works ok.
+ *
+ * NOTE: blen is not aligned to a block size, we'll pad zeros, that's
+ *       what sg[4] is for. Maybe there is a smarter way to do this.
+ */
+static int wusb_ccm_mac(struct crypto_blkcipher *tfm_cbc,
+                        struct crypto_cipher *tfm_aes, void *mic,
+                        const struct aes_ccm_nonce *n,
+                        const struct aes_ccm_label *a, const void *b,
+                        size_t blen)
+{
+        int result = 0;
+        struct blkcipher_desc desc;
+        struct aes_ccm_b0 b0;
+        struct aes_ccm_b1 b1;
+        struct aes_ccm_a ax;
+        struct scatterlist sg[4], sg_dst;
+        void *iv, *dst_buf;
+        size_t ivsize, dst_size;
+        const u8 bzero[16] = { 0 };
+        size_t zero_padding;
+
+        d_fnstart(3, NULL, "(tfm_cbc %p, tfm_aes %p, mic %p, "
+                  "n %p, a %p, b %p, blen %zu)\n",
+                  tfm_cbc, tfm_aes, mic, n, a, b, blen);
+        /*
+         * These checks should be compile time optimized out
+         * ensure @a fills b1's mac_header and following fields
+         */
+        WARN_ON(sizeof(*a) != sizeof(b1) - sizeof(b1.la));
+        WARN_ON(sizeof(b0) != sizeof(struct aes_ccm_block));
+        WARN_ON(sizeof(b1) != sizeof(struct aes_ccm_block));
+        WARN_ON(sizeof(ax) != sizeof(struct aes_ccm_block));
+
+        result = -ENOMEM;
+        zero_padding = sizeof(struct aes_ccm_block)
+                - blen % sizeof(struct aes_ccm_block);
+        zero_padding = blen % sizeof(struct aes_ccm_block);
+        if (zero_padding)
+                zero_padding = sizeof(struct aes_ccm_block) - zero_padding;
+        dst_size = blen + sizeof(b0) + sizeof(b1) + zero_padding;
+        dst_buf = kzalloc(dst_size, GFP_KERNEL);
+        if (dst_buf == NULL) {
+                printk(KERN_ERR "E: can't alloc destination buffer\n");
+                goto error_dst_buf;
+        }
+
+        iv = crypto_blkcipher_crt(tfm_cbc)->iv;
+        ivsize = crypto_blkcipher_ivsize(tfm_cbc);
+        memset(iv, 0, ivsize);
+
+        /* Setup B0 */
+        b0.flags = 0x59;        /* Format B0 */
+        b0.ccm_nonce = *n;
+        b0.lm = cpu_to_be16(0); /* WUSB1.0[6.5] sez l(m) is 0 */
+
+        /* Setup B1
+         *
+         * The WUSB spec is anything but clear! WUSB1.0[6.5]
+         * says that to initialize B1 from A with 'l(a) = blen +
+         * 14'--after clarification, it means to use A's contents
+         * for MAC Header, EO, sec reserved and padding.
+         */
+        b1.la = cpu_to_be16(blen + 14);
+        memcpy(&b1.mac_header, a, sizeof(*a));
+
+        d_printf(4, NULL, "I: B0 (%zu bytes)\n", sizeof(b0));
+        d_dump(4, NULL, &b0, sizeof(b0));
+        d_printf(4, NULL, "I: B1 (%zu bytes)\n", sizeof(b1));
+        d_dump(4, NULL, &b1, sizeof(b1));
+        d_printf(4, NULL, "I: B (%zu bytes)\n", blen);
+        d_dump(4, NULL, b, blen);
+        d_printf(4, NULL, "I: B 0-padding (%zu bytes)\n", zero_padding);
+        d_printf(4, NULL, "D: IV before crypto (%zu)\n", ivsize);
+        d_dump(4, NULL, iv, ivsize);
+
+        sg_init_table(sg, ARRAY_SIZE(sg));
+        sg_set_buf(&sg[0], &b0, sizeof(b0));
+        sg_set_buf(&sg[1], &b1, sizeof(b1));
+        sg_set_buf(&sg[2], b, blen);
+        /* 0 if well behaved :) */
+        sg_set_buf(&sg[3], bzero, zero_padding);
+        sg_init_one(&sg_dst, dst_buf, dst_size);
+
+        desc.tfm = tfm_cbc;
+        desc.flags = 0;
+        result = crypto_blkcipher_encrypt(&desc, &sg_dst, sg, dst_size);
+        if (result < 0) {
+                printk(KERN_ERR "E: can't compute CBC-MAC tag (MIC): %d\n",
+                       result);
+                goto error_cbc_crypt;
+        }
+        d_printf(4, NULL, "D: MIC tag\n");
+        d_dump(4, NULL, iv, ivsize);
+
+        /* Now we crypt the MIC Tag (*iv) with Ax -- values per WUSB1.0[6.5]
+         * The procedure is to AES crypt the A0 block and XOR the MIC
+         * Tag agains it; we only do the first 8 bytes and place it
+         * directly in the destination buffer.
+         *
+         * POS Crypto API: size is assumed to be AES's block size.
+         * Thanks for documenting it -- tip taken from airo.c
+         */
+        ax.flags = 0x01;                /* as per WUSB 1.0 spec */
+        ax.ccm_nonce = *n;
+        ax.counter = 0;
+        crypto_cipher_encrypt_one(tfm_aes, (void *)&ax, (void *)&ax);
+        bytewise_xor(mic, &ax, iv, 8);
+        d_printf(4, NULL, "D: CTR[MIC]\n");
+        d_dump(4, NULL, &ax, 8);
+        d_printf(4, NULL, "D: CCM-MIC tag\n");
+        d_dump(4, NULL, mic, 8);
+        result = 8;
+error_cbc_crypt:
+        kfree(dst_buf);
+error_dst_buf:
+        d_fnend(3, NULL, "(tfm_cbc %p, tfm_aes %p, mic %p, "
+                "n %p, a %p, b %p, blen %zu)\n",
+                tfm_cbc, tfm_aes, mic, n, a, b, blen);
+        return result;
+}
+
+/*
+ * WUSB Pseudo Random Function (WUSB1.0[6.5])
+ *
+ * @b: buffer to the source data; cannot be a global or const local
+ *     (will confuse the scatterlists)
+ */
+ssize_t wusb_prf(void *out, size_t out_size,
+                 const u8 key[16], const struct aes_ccm_nonce *_n,
+                 const struct aes_ccm_label *a,
+                 const void *b, size_t blen, size_t len)
+{
+        ssize_t result, bytes = 0, bitr;
+        struct aes_ccm_nonce n = *_n;
+        struct crypto_blkcipher *tfm_cbc;
+        struct crypto_cipher *tfm_aes;
+        u64 sfn = 0;
+        __le64 sfn_le;
+
+        d_fnstart(3, NULL, "(out %p, out_size %zu, key %p, _n %p, "
+                  "a %p, b %p, blen %zu, len %zu)\n", out, out_size,
+                  key, _n, a, b, blen, len);
+
+        tfm_cbc = crypto_alloc_blkcipher("cbc(aes)", 0, CRYPTO_ALG_ASYNC);
+        if (IS_ERR(tfm_cbc)) {
+                result = PTR_ERR(tfm_cbc);
+                printk(KERN_ERR "E: can't load CBC(AES): %d\n", (int)result);
+                goto error_alloc_cbc;
+        }
+        result = crypto_blkcipher_setkey(tfm_cbc, key, 16);
+        if (result < 0) {
+                printk(KERN_ERR "E: can't set CBC key: %d\n", (int)result);
+                goto error_setkey_cbc;
+        }
+
+        tfm_aes = crypto_alloc_cipher("aes", 0, CRYPTO_ALG_ASYNC);
+        if (IS_ERR(tfm_aes)) {
+                result = PTR_ERR(tfm_aes);
+                printk(KERN_ERR "E: can't load AES: %d\n", (int)result);
+                goto error_alloc_aes;
+        }
+        result = crypto_cipher_setkey(tfm_aes, key, 16);
+        if (result < 0) {
+                printk(KERN_ERR "E: can't set AES key: %d\n", (int)result);
+                goto error_setkey_aes;
+        }
+
+        for (bitr = 0; bitr < (len + 63) / 64; bitr++) {
+                sfn_le = cpu_to_le64(sfn++);
+                memcpy(&n.sfn, &sfn_le, sizeof(n.sfn)); /* n.sfn++... */
+                result = wusb_ccm_mac(tfm_cbc, tfm_aes, out + bytes,
+                                      &n, a, b, blen);
+                if (result < 0)
+                        goto error_ccm_mac;
+                bytes += result;
+        }
+        result = bytes;
+error_ccm_mac:
+error_setkey_aes:
+        crypto_free_cipher(tfm_aes);
+error_alloc_aes:
+error_setkey_cbc:
+        crypto_free_blkcipher(tfm_cbc);
+error_alloc_cbc:
+        d_fnend(3, NULL, "(out %p, out_size %zu, key %p, _n %p, "
+                "a %p, b %p, blen %zu, len %zu) = %d\n", out, out_size,
+                key, _n, a, b, blen, len, (int)bytes);
+        return result;
+}
+
+/* WUSB1.0[A.2] test vectors */
+static const u8 stv_hsmic_key[16] = {
+        0x4b, 0x79, 0xa3, 0xcf, 0xe5, 0x53, 0x23, 0x9d,
+        0xd7, 0xc1, 0x6d, 0x1c, 0x2d, 0xab, 0x6d, 0x3f
+};
+
+static const struct aes_ccm_nonce stv_hsmic_n = {
+        .sfn = { 0 },
+        .tkid = { 0x76, 0x98, 0x01,  },
+        .dest_addr = { .data = { 0xbe, 0x00 } },
+                .src_addr = { .data = { 0x76, 0x98 } },
+};
+
+/*
+ * Out-of-band MIC Generation verification code
+ *
+ */
+static int wusb_oob_mic_verify(void)
+{
+        int result;
+        u8 mic[8];
+        /* WUSB1.0[A.2] test vectors
+         *
+         * Need to keep it in the local stack as GCC 4.1.3something
+         * messes up and generates noise.
+         */
+        struct usb_handshake stv_hsmic_hs = {
+                .bMessageNumber = 2,
+                .bStatus        = 00,
+                .tTKID          = { 0x76, 0x98, 0x01 },
+                .bReserved      = 00,
+                .CDID           = { 0x30, 0x31, 0x32, 0x33, 0x34, 0x35,
+                                    0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b,
+                                    0x3c, 0x3d, 0x3e, 0x3f },
+                .nonce          = { 0x20, 0x21, 0x22, 0x23, 0x24, 0x25,
+                                    0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b,
+                                    0x2c, 0x2d, 0x2e, 0x2f },
+                .MIC            = { 0x75, 0x6a, 0x97, 0x51, 0x0c, 0x8c,
+                                    0x14, 0x7b } ,
+        };
+        size_t hs_size;
+
+        result = wusb_oob_mic(mic, stv_hsmic_key, &stv_hsmic_n, &stv_hsmic_hs);
+        if (result < 0)
+                printk(KERN_ERR "E: WUSB OOB MIC test: failed: %d\n", result);
+        else if (memcmp(stv_hsmic_hs.MIC, mic, sizeof(mic))) {
+                printk(KERN_ERR "E: OOB MIC test: "
+                       "mismatch between MIC result and WUSB1.0[A2]\n");
+                hs_size = sizeof(stv_hsmic_hs) - sizeof(stv_hsmic_hs.MIC);
+                printk(KERN_ERR "E: Handshake2 in: (%zu bytes)\n", hs_size);
+                dump_bytes(NULL, &stv_hsmic_hs, hs_size);
+                printk(KERN_ERR "E: CCM Nonce in: (%zu bytes)\n",
+                       sizeof(stv_hsmic_n));
+                dump_bytes(NULL, &stv_hsmic_n, sizeof(stv_hsmic_n));
+                printk(KERN_ERR "E: MIC out:\n");
+                dump_bytes(NULL, mic, sizeof(mic));
+                printk(KERN_ERR "E: MIC out (from WUSB1.0[A.2]):\n");
+                dump_bytes(NULL, stv_hsmic_hs.MIC, sizeof(stv_hsmic_hs.MIC));
+                result = -EINVAL;
+        } else
+                result = 0;
+        return result;
+}
+
+/*
+ * Test vectors for Key derivation
+ *
+ * These come from WUSB1.0[6.5.1], the vectors in WUSB1.0[A.1]
+ * (errata corrected in 2005/07).
+ */
+static const u8 stv_key_a1[16] __attribute__ ((__aligned__(4))) = {
+        0xf0, 0xe1, 0xd2, 0xc3, 0xb4, 0xa5, 0x96, 0x87,
+        0x78, 0x69, 0x5a, 0x4b, 0x3c, 0x2d, 0x1e, 0x0f
+};
+
+static const struct aes_ccm_nonce stv_keydvt_n_a1 = {
+        .sfn = { 0 },
+        .tkid = { 0x76, 0x98, 0x01,  },
+        .dest_addr = { .data = { 0xbe, 0x00 } },
+        .src_addr = { .data = { 0x76, 0x98 } },
+};
+
+static const struct wusb_keydvt_out stv_keydvt_out_a1 = {
+        .kck = {
+                0x4b, 0x79, 0xa3, 0xcf, 0xe5, 0x53, 0x23, 0x9d,
+                0xd7, 0xc1, 0x6d, 0x1c, 0x2d, 0xab, 0x6d, 0x3f
+        },
+        .ptk = {
+                0xc8, 0x70, 0x62, 0x82, 0xb6, 0x7c, 0xe9, 0x06,
+                0x7b, 0xc5, 0x25, 0x69, 0xf2, 0x36, 0x61, 0x2d
+        }
+};
+
+/*
+ * Performa a test to make sure we match the vectors defined in
+ * WUSB1.0[A.1](Errata2006/12)
+ */
+static int wusb_key_derive_verify(void)
+{
+        int result = 0;
+        struct wusb_keydvt_out keydvt_out;
+        /* These come from WUSB1.0[A.1] + 2006/12 errata
+         * NOTE: can't make this const or global -- somehow it seems
+         *       the scatterlists for crypto get confused and we get
+         *       bad data. There is no doc on this... */
+        struct wusb_keydvt_in stv_keydvt_in_a1 = {
+                .hnonce = {
+                        0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
+                        0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f
+                },
+                .dnonce = {
+                        0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
+                        0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f
+                }
+        };
+
+        result = wusb_key_derive(&keydvt_out, stv_key_a1, &stv_keydvt_n_a1,
+                                 &stv_keydvt_in_a1);
+        if (result < 0)
+                printk(KERN_ERR "E: WUSB key derivation test: "
+                       "derivation failed: %d\n", result);
+        if (memcmp(&stv_keydvt_out_a1, &keydvt_out, sizeof(keydvt_out))) {
+                printk(KERN_ERR "E: WUSB key derivation test: "
+                       "mismatch between key derivation result "
+                       "and WUSB1.0[A1] Errata 2006/12\n");
+                printk(KERN_ERR "E: keydvt in: key (%zu bytes)\n",
+                       sizeof(stv_key_a1));
+                dump_bytes(NULL, stv_key_a1, sizeof(stv_key_a1));
+                printk(KERN_ERR "E: keydvt in: nonce (%zu bytes)\n",
+                       sizeof(stv_keydvt_n_a1));
+                dump_bytes(NULL, &stv_keydvt_n_a1, sizeof(stv_keydvt_n_a1));
+                printk(KERN_ERR "E: keydvt in: hnonce & dnonce (%zu bytes)\n",
+                       sizeof(stv_keydvt_in_a1));
+                dump_bytes(NULL, &stv_keydvt_in_a1, sizeof(stv_keydvt_in_a1));
+                printk(KERN_ERR "E: keydvt out: KCK\n");
+                dump_bytes(NULL, &keydvt_out.kck, sizeof(keydvt_out.kck));
+                printk(KERN_ERR "E: keydvt out: PTK\n");
+                dump_bytes(NULL, &keydvt_out.ptk, sizeof(keydvt_out.ptk));
+                result = -EINVAL;
+        } else
+                result = 0;
+        return result;
+}
+
+/*
+ * Initialize crypto system
+ *
+ * FIXME: we do nothing now, other than verifying. Later on we'll
+ * cache the encryption stuff, so that's why we have a separate init.
+ */
+int wusb_crypto_init(void)
+{
+        int result;
+
+        result = wusb_key_derive_verify();
+        if (result < 0)
+                return result;
+        return wusb_oob_mic_verify();
+}
+
+void wusb_crypto_exit(void)
+{
+        /* FIXME: free cached crypto transforms */
+}
diff --git a/drivers/usb/wusbcore/dev-sysfs.c b/drivers/usb/wusbcore/dev-sysfs.c
new file mode 100644
index 000000000000..7897a19652e5
--- /dev/null
+++ b/drivers/usb/wusbcore/dev-sysfs.c
@@ -0,0 +1,143 @@
+/*
+ * WUSB devices
+ * sysfs bindings
+ *
+ * Copyright (C) 2007 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * Get them out of the way...
+ */
+
+#include <linux/jiffies.h>
+#include <linux/ctype.h>
+#include <linux/workqueue.h>
+#include "wusbhc.h"
+
+#undef D_LOCAL
+#define D_LOCAL 4
+#include <linux/uwb/debug.h>
+
+static ssize_t wusb_disconnect_store(struct device *dev,
+                                     struct device_attribute *attr,
+                                     const char *buf, size_t size)
+{
+        struct usb_device *usb_dev;
+        struct wusbhc *wusbhc;
+        unsigned command;
+        u8 port_idx;
+
+        if (sscanf(buf, "%u", &command) != 1)
+                return -EINVAL;
+        if (command == 0)
+                return size;
+        usb_dev = to_usb_device(dev);
+        wusbhc = wusbhc_get_by_usb_dev(usb_dev);
+        if (wusbhc == NULL)
+                return -ENODEV;
+
+        mutex_lock(&wusbhc->mutex);
+        port_idx = wusb_port_no_to_idx(usb_dev->portnum);
+        __wusbhc_dev_disable(wusbhc, port_idx);
+        mutex_unlock(&wusbhc->mutex);
+        wusbhc_put(wusbhc);
+        return size;
+}
+static DEVICE_ATTR(wusb_disconnect, 0200, NULL, wusb_disconnect_store);
+
+static ssize_t wusb_cdid_show(struct device *dev,
+                              struct device_attribute *attr, char *buf)
+{
+        ssize_t result;
+        struct wusb_dev *wusb_dev;
+
+        wusb_dev = wusb_dev_get_by_usb_dev(to_usb_device(dev));
+        if (wusb_dev == NULL)
+                return -ENODEV;
+        result = ckhdid_printf(buf, PAGE_SIZE, &wusb_dev->cdid);
+        strcat(buf, "\n");
+        wusb_dev_put(wusb_dev);
+        return result + 1;
+}
+static DEVICE_ATTR(wusb_cdid, 0444, wusb_cdid_show, NULL);
+
+static ssize_t wusb_ck_store(struct device *dev,
+                             struct device_attribute *attr,
+                             const char *buf, size_t size)
+{
+        int result;
+        struct usb_device *usb_dev;
+        struct wusbhc *wusbhc;
+        struct wusb_ckhdid ck;
+
+        result = sscanf(buf,
+                        "%02hhx %02hhx %02hhx %02hhx "
+                        "%02hhx %02hhx %02hhx %02hhx "
+                        "%02hhx %02hhx %02hhx %02hhx "
+                        "%02hhx %02hhx %02hhx %02hhx\n",
+                        &ck.data[0] , &ck.data[1],
+                        &ck.data[2] , &ck.data[3],
+                        &ck.data[4] , &ck.data[5],
+                        &ck.data[6] , &ck.data[7],
+                        &ck.data[8] , &ck.data[9],
+                        &ck.data[10], &ck.data[11],
+                        &ck.data[12], &ck.data[13],
+                        &ck.data[14], &ck.data[15]);
+        if (result != 16)
+                return -EINVAL;
+
+        usb_dev = to_usb_device(dev);
+        wusbhc = wusbhc_get_by_usb_dev(usb_dev);
+        if (wusbhc == NULL)
+                return -ENODEV;
+        result = wusb_dev_4way_handshake(wusbhc, usb_dev->wusb_dev, &ck);
+        memset(&ck, 0, sizeof(ck));
+        wusbhc_put(wusbhc);
+        return result < 0 ? result : size;
+}
+static DEVICE_ATTR(wusb_ck, 0200, NULL, wusb_ck_store);
+
+static struct attribute *wusb_dev_attrs[] = {
+                &dev_attr_wusb_disconnect.attr,
+                &dev_attr_wusb_cdid.attr,
+                &dev_attr_wusb_ck.attr,
+                NULL,
+};
+
+static struct attribute_group wusb_dev_attr_group = {
+        .name = NULL,   /* we want them in the same directory */
+        .attrs = wusb_dev_attrs,
+};
+
+int wusb_dev_sysfs_add(struct wusbhc *wusbhc, struct usb_device *usb_dev,
+                       struct wusb_dev *wusb_dev)
+{
+        int result = sysfs_create_group(&usb_dev->dev.kobj,
+                                        &wusb_dev_attr_group);
+        struct device *dev = &usb_dev->dev;
+        if (result < 0)
+                dev_err(dev, "Cannot register WUSB-dev attributes: %d\n",
+                        result);
+        return result;
+}
+
+void wusb_dev_sysfs_rm(struct wusb_dev *wusb_dev)
+{
+        struct usb_device *usb_dev = wusb_dev->usb_dev;
+        if (usb_dev)
+                sysfs_remove_group(&usb_dev->dev.kobj, &wusb_dev_attr_group);
+}
diff --git a/drivers/usb/wusbcore/devconnect.c b/drivers/usb/wusbcore/devconnect.c
new file mode 100644
index 000000000000..f45d777bef34
--- /dev/null
+++ b/drivers/usb/wusbcore/devconnect.c
@@ -0,0 +1,1297 @@
+/*
+ * WUSB Wire Adapter: Control/Data Streaming Interface (WUSB[8])
+ * Device Connect handling
+ *
+ * Copyright (C) 2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ * FIXME: this file needs to be broken up, it's grown too big
+ *
+ *
+ * WUSB1.0[7.1, 7.5.1, ]
+ *
+ * WUSB device connection is kind of messy. Some background:
+ *
+ *     When a device wants to connect it scans the UWB radio channels
+ *     looking for a WUSB Channel; a WUSB channel is defined by MMCs
+ *     (Micro Managed Commands or something like that) [see
+ *     Design-overview for more on this] .
+ *
+ * So, device scans the radio, finds MMCs and thus a host and checks
+ * when the next DNTS is. It sends a Device Notification Connect
+ * (DN_Connect); the host picks it up (through nep.c and notif.c, ends
+ * up in wusb_devconnect_ack(), which creates a wusb_dev structure in
+ * wusbhc->port[port_number].wusb_dev), assigns an unauth address
+ * to the device (this means from 0x80 to 0xfe) and sends, in the MMC
+ * a Connect Ack Information Element (ConnAck IE).
+ *
+ * So now the device now has a WUSB address. From now on, we use
+ * that to talk to it in the RPipes.
+ *
+ * ASSUMPTIONS:
+ *
+ *  - We use the the as device address the port number where it is
+ *    connected (port 0 doesn't exist). For unauth, it is 128 + that.
+ *
+ * ROADMAP:
+ *
+ *   This file contains the logic for doing that--entry points:
+ *
+ *   wusb_devconnect_ack()      Ack a device until _acked() called.
+ *                              Called by notif.c:wusb_handle_dn_connect()
+ *                              when a DN_Connect is received.
+ *
+ *   wusbhc_devconnect_auth()   Called by rh.c:wusbhc_rh_port_reset() when
+ *                              doing the device connect sequence.
+ *
+ *     wusb_devconnect_acked()  Ack done, release resources.
+ *
+ *   wusb_handle_dn_alive()     Called by notif.c:wusb_handle_dn()
+ *                              for processing a DN_Alive pong from a device.
+ *
+ *   wusb_handle_dn_disconnect()Called by notif.c:wusb_handle_dn() to
+ *                              process a disconenct request from a
+ *                              device.
+ *
+ *   wusb_dev_reset()           Called by rh.c:wusbhc_rh_port_reset() when
+ *                              resetting a device.
+ *
+ *   __wusb_dev_disable()       Called by rh.c:wusbhc_rh_clear_port_feat() when
+ *                              disabling a port.
+ *
+ *   wusb_devconnect_create()   Called when creating the host by
+ *                              lc.c:wusbhc_create().
+ *
+ *   wusb_devconnect_destroy()  Cleanup called removing the host. Called
+ *                              by lc.c:wusbhc_destroy().
+ *
+ *   Each Wireless USB host maintains a list of DN_Connect requests
+ *   (actually we maintain a list of pending Connect Acks, the
+ *   wusbhc->ca_list).
+ *
+ * LIFE CYCLE OF port->wusb_dev
+ *
+ *   Before the @wusbhc structure put()s the reference it owns for
+ *   port->wusb_dev [and clean the wusb_dev pointer], it needs to
+ *   lock @wusbhc->mutex.
+ */
+
+#include <linux/jiffies.h>
+#include <linux/ctype.h>
+#include <linux/workqueue.h>
+#include "wusbhc.h"
+
+#undef D_LOCAL
+#define D_LOCAL 1
+#include <linux/uwb/debug.h>
+
+static void wusbhc_devconnect_acked_work(struct work_struct *work);
+
+static void wusb_dev_free(struct wusb_dev *wusb_dev)
+{
+        if (wusb_dev) {
+                kfree(wusb_dev->set_gtk_req);
+                usb_free_urb(wusb_dev->set_gtk_urb);
+                kfree(wusb_dev);
+        }
+}
+
+static struct wusb_dev *wusb_dev_alloc(struct wusbhc *wusbhc)
+{
+        struct wusb_dev *wusb_dev;
+        struct urb *urb;
+        struct usb_ctrlrequest *req;
+
+        wusb_dev = kzalloc(sizeof(*wusb_dev), GFP_KERNEL);
+        if (wusb_dev == NULL)
+                goto err;
+
+        wusb_dev->wusbhc = wusbhc;
+
+        INIT_WORK(&wusb_dev->devconnect_acked_work, wusbhc_devconnect_acked_work);
+
+        urb = usb_alloc_urb(0, GFP_KERNEL);
+        if (urb == NULL)
+                goto err;
+
+        req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL);
+        if (req == NULL)
+                goto err;
+
+        req->bRequestType = USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE;
+        req->bRequest = USB_REQ_SET_DESCRIPTOR;
+        req->wValue = cpu_to_le16(USB_DT_KEY << 8 | wusbhc->gtk_index);
+        req->wIndex = 0;
+        req->wLength = cpu_to_le16(wusbhc->gtk.descr.bLength);
+
+        wusb_dev->set_gtk_urb = urb;
+        wusb_dev->set_gtk_req = req;
+
+        return wusb_dev;
+err:
+        wusb_dev_free(wusb_dev);
+        return NULL;
+}
+
+
+/*
+ * Using the Connect-Ack list, fill out the @wusbhc Connect-Ack WUSB IE
+ * properly so that it can be added to the MMC.
+ *
+ * We just get the @wusbhc->ca_list and fill out the first four ones or
+ * less (per-spec WUSB1.0[7.5, before T7-38). If the ConnectAck WUSB
+ * IE is not allocated, we alloc it.
+ *
+ * @wusbhc->mutex must be taken
+ */
+static void wusbhc_fill_cack_ie(struct wusbhc *wusbhc)
+{
+        unsigned cnt;
+        struct wusb_dev *dev_itr;
+        struct wuie_connect_ack *cack_ie;
+
+        cack_ie = &wusbhc->cack_ie;
+        cnt = 0;
+        list_for_each_entry(dev_itr, &wusbhc->cack_list, cack_node) {
+                cack_ie->blk[cnt].CDID = dev_itr->cdid;
+                cack_ie->blk[cnt].bDeviceAddress = dev_itr->addr;
+                if (++cnt >= WUIE_ELT_MAX)
+                        break;
+        }
+        cack_ie->hdr.bLength = sizeof(cack_ie->hdr)
+                + cnt * sizeof(cack_ie->blk[0]);
+}
+
+/*
+ * Register a new device that wants to connect
+ *
+ * A new device wants to connect, so we add it to the Connect-Ack
+ * list. We give it an address in the unauthorized range (bit 8 set);
+ * user space will have to drive authorization further on.
+ *
+ * @dev_addr: address to use for the device (which is also the port
+ *            number).
+ *
+ * @wusbhc->mutex must be taken
+ */
+static struct wusb_dev *wusbhc_cack_add(struct wusbhc *wusbhc,
+                                        struct wusb_dn_connect *dnc,
+                                        const char *pr_cdid, u8 port_idx)
+{
+        struct device *dev = wusbhc->dev;
+        struct wusb_dev *wusb_dev;
+        int new_connection = wusb_dn_connect_new_connection(dnc);
+        u8 dev_addr;
+        int result;
+
+        /* Is it registered already? */
+        list_for_each_entry(wusb_dev, &wusbhc->cack_list, cack_node)
+                if (!memcmp(&wusb_dev->cdid, &dnc->CDID,
+                            sizeof(wusb_dev->cdid)))
+                        return wusb_dev;
+        /* We don't have it, create an entry, register it */
+        wusb_dev = wusb_dev_alloc(wusbhc);
+        if (wusb_dev == NULL)
+                return NULL;
+        wusb_dev_init(wusb_dev);
+        wusb_dev->cdid = dnc->CDID;
+        wusb_dev->port_idx = port_idx;
+
+        /*
+         * Devices are always available within the cluster reservation
+         * and since the hardware will take the intersection of the
+         * per-device availability and the cluster reservation, the
+         * per-device availability can simply be set to always
+         * available.
+         */
+        bitmap_fill(wusb_dev->availability.bm, UWB_NUM_MAS);
+
+        /* FIXME: handle reconnects instead of assuming connects are
+           always new. */
+        if (1 && new_connection == 0)
+                new_connection = 1;
+        if (new_connection) {
+                dev_addr = (port_idx + 2) | WUSB_DEV_ADDR_UNAUTH;
+
+                dev_info(dev, "Connecting new WUSB device to address %u, "
+                        "port %u\n", dev_addr, port_idx);
+
+                result = wusb_set_dev_addr(wusbhc, wusb_dev, dev_addr);
+                if (result < 0)
+                        return NULL;
+        }
+        wusb_dev->entry_ts = jiffies;
+        list_add_tail(&wusb_dev->cack_node, &wusbhc->cack_list);
+        wusbhc->cack_count++;
+        wusbhc_fill_cack_ie(wusbhc);
+        return wusb_dev;
+}
+
+/*
+ * Remove a Connect-Ack context entry from the HCs view
+ *
+ * @wusbhc->mutex must be taken
+ */
+static void wusbhc_cack_rm(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev)
+{
+        struct device *dev = wusbhc->dev;
+        d_fnstart(3, dev, "(wusbhc %p wusb_dev %p)\n", wusbhc, wusb_dev);
+        list_del_init(&wusb_dev->cack_node);
+        wusbhc->cack_count--;
+        wusbhc_fill_cack_ie(wusbhc);
+        d_fnend(3, dev, "(wusbhc %p wusb_dev %p) = void\n", wusbhc, wusb_dev);
+}
+
+/*
+ * @wusbhc->mutex must be taken */
+static
+void wusbhc_devconnect_acked(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev)
+{
+        struct device *dev = wusbhc->dev;
+        d_fnstart(3, dev, "(wusbhc %p wusb_dev %p)\n", wusbhc, wusb_dev);
+        wusbhc_cack_rm(wusbhc, wusb_dev);
+        if (wusbhc->cack_count)
+                wusbhc_mmcie_set(wusbhc, 0, 0, &wusbhc->cack_ie.hdr);
+        else
+                wusbhc_mmcie_rm(wusbhc, &wusbhc->cack_ie.hdr);
+        d_fnend(3, dev, "(wusbhc %p wusb_dev %p) = void\n", wusbhc, wusb_dev);
+}
+
+static void wusbhc_devconnect_acked_work(struct work_struct *work)
+{
+        struct wusb_dev *wusb_dev = container_of(work, struct wusb_dev,
+                                                 devconnect_acked_work);
+        struct wusbhc *wusbhc = wusb_dev->wusbhc;
+
+        mutex_lock(&wusbhc->mutex);
+        wusbhc_devconnect_acked(wusbhc, wusb_dev);
+        mutex_unlock(&wusbhc->mutex);
+}
+
+/*
+ * Ack a device for connection
+ *
+ * FIXME: docs
+ *
+ * @pr_cdid:    Printable CDID...hex Use @dnc->cdid for the real deal.
+ *
+ * So we get the connect ack IE (may have been allocated already),
+ * find an empty connect block, an empty virtual port, create an
+ * address with it (see below), make it an unauth addr [bit 7 set] and
+ * set the MMC.
+ *
+ * Addresses: because WUSB hosts have no downstream hubs, we can do a
+ *            1:1 mapping between 'port number' and device
+ *            address. This simplifies many things, as during this
+ *            initial connect phase the USB stack has no knoledge of
+ *            the device and hasn't assigned an address yet--we know
+ *            USB's choose_address() will use the same euristics we
+ *            use here, so we can assume which address will be assigned.
+ *
+ *            USB stack always assigns address 1 to the root hub, so
+ *            to the port number we add 2 (thus virtual port #0 is
+ *            addr #2).
+ *
+ * @wusbhc shall be referenced
+ */
+static
+void wusbhc_devconnect_ack(struct wusbhc *wusbhc, struct wusb_dn_connect *dnc,
+                           const char *pr_cdid)
+{
+        int result;
+        struct device *dev = wusbhc->dev;
+        struct wusb_dev *wusb_dev;
+        struct wusb_port *port;
+        unsigned idx, devnum;
+
+        d_fnstart(3, dev, "(%p, %p, %s)\n", wusbhc, dnc, pr_cdid);
+        mutex_lock(&wusbhc->mutex);
+
+        /* Check we are not handling it already */
+        for (idx = 0; idx < wusbhc->ports_max; idx++) {
+                port = wusb_port_by_idx(wusbhc, idx);
+                if (port->wusb_dev
+                    && memcmp(&dnc->CDID, &port->wusb_dev->cdid, sizeof(dnc->CDID)) == 0)
+                        goto error_unlock;
+        }
+        /* Look up those fake ports we have for a free one */
+        for (idx = 0; idx < wusbhc->ports_max; idx++) {
+                port = wusb_port_by_idx(wusbhc, idx);
+                if ((port->status & USB_PORT_STAT_POWER)
+                    && !(port->status & USB_PORT_STAT_CONNECTION))
+                        break;
+        }
+        if (idx >= wusbhc->ports_max) {
+                dev_err(dev, "Host controller can't connect more devices "
+                        "(%u already connected); device %s rejected\n",
+                        wusbhc->ports_max, pr_cdid);
+                /* NOTE: we could send a WUIE_Disconnect here, but we haven't
+                 *       event acked, so the device will eventually timeout the
+                 *       connection, right? */
+                goto error_unlock;
+        }
+
+        devnum = idx + 2;
+
+        /* Make sure we are using no crypto on that "virtual port" */
+        wusbhc->set_ptk(wusbhc, idx, 0, NULL, 0);
+
+        /* Grab a filled in Connect-Ack context, fill out the
+         * Connect-Ack Wireless USB IE, set the MMC */
+        wusb_dev = wusbhc_cack_add(wusbhc, dnc, pr_cdid, idx);
+        if (wusb_dev == NULL)
+                goto error_unlock;
+        result = wusbhc_mmcie_set(wusbhc, 0, 0, &wusbhc->cack_ie.hdr);
+        if (result < 0)
+                goto error_unlock;
+        /* Give the device at least 2ms (WUSB1.0[7.5.1p3]), let's do
+         * three for a good measure */
+        msleep(3);
+        port->wusb_dev = wusb_dev;
+        port->status |= USB_PORT_STAT_CONNECTION;
+        port->change |= USB_PORT_STAT_C_CONNECTION;
+        port->reset_count = 0;
+        /* Now the port status changed to connected; khubd will
+         * pick the change up and try to reset the port to bring it to
+         * the enabled state--so this process returns up to the stack
+         * and it calls back into wusbhc_rh_port_reset() who will call
+         * devconnect_auth().
+         */
+error_unlock:
+        mutex_unlock(&wusbhc->mutex);
+        d_fnend(3, dev, "(%p, %p, %s) = void\n", wusbhc, dnc, pr_cdid);
+        return;
+
+}
+
+/*
+ * Disconnect a Wireless USB device from its fake port
+ *
+ * Marks the port as disconnected so that khubd can pick up the change
+ * and drops our knowledge about the device.
+ *
+ * Assumes there is a device connected
+ *
+ * @port_index: zero based port number
+ *
+ * NOTE: @wusbhc->mutex is locked
+ *
+ * WARNING: From here it is not very safe to access anything hanging off
+ *          wusb_dev
+ */
+static void __wusbhc_dev_disconnect(struct wusbhc *wusbhc,
+                                    struct wusb_port *port)
+{
+        struct device *dev = wusbhc->dev;
+        struct wusb_dev *wusb_dev = port->wusb_dev;
+
+        d_fnstart(3, dev, "(wusbhc %p, port %p)\n", wusbhc, port);
+        port->status &= ~(USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE
+                          | USB_PORT_STAT_SUSPEND | USB_PORT_STAT_RESET
+                          | USB_PORT_STAT_LOW_SPEED | USB_PORT_STAT_HIGH_SPEED);
+        port->change |= USB_PORT_STAT_C_CONNECTION | USB_PORT_STAT_C_ENABLE;
+        if (wusb_dev) {
+                if (!list_empty(&wusb_dev->cack_node))
+                        list_del_init(&wusb_dev->cack_node);
+                /* For the one in cack_add() */
+                wusb_dev_put(wusb_dev);
+        }
+        port->wusb_dev = NULL;
+        /* don't reset the reset_count to zero or wusbhc_rh_port_reset will get
+         * confused! We only reset to zero when we connect a new device.
+         */
+
+        /* After a device disconnects, change the GTK (see [WUSB]
+         * section 6.2.11.2). */
+        wusbhc_gtk_rekey(wusbhc);
+
+        d_fnend(3, dev, "(wusbhc %p, port %p) = void\n", wusbhc, port);
+        /* The Wireless USB part has forgotten about the device already; now
+         * khubd's timer will pick up the disconnection and remove the USB
+         * device from the system
+         */
+}
+
+/*
+ * Authenticate a device into the WUSB Cluster
+ *
+ * Called from the Root Hub code (rh.c:wusbhc_rh_port_reset()) when
+ * asking for a reset on a port that is not enabled (ie: first connect
+ * on the port).
+ *
+ * Performs the 4way handshake to allow the device to comunicate w/ the
+ * WUSB Cluster securely; once done, issue a request to the device for
+ * it to change to address 0.
+ *
+ * This mimics the reset step of Wired USB that once resetting a
+ * device, leaves the port in enabled state and the dev with the
+ * default address (0).
+ *
+ * WUSB1.0[7.1.2]
+ *
+ * @port_idx: port where the change happened--This is the index into
+ *            the wusbhc port array, not the USB port number.
+ */
+int wusbhc_devconnect_auth(struct wusbhc *wusbhc, u8 port_idx)
+{
+        struct device *dev = wusbhc->dev;
+        struct wusb_port *port = wusb_port_by_idx(wusbhc, port_idx);
+
+        d_fnstart(3, dev, "(%p, %u)\n", wusbhc, port_idx);
+        port->status &= ~USB_PORT_STAT_RESET;
+        port->status |= USB_PORT_STAT_ENABLE;
+        port->change |= USB_PORT_STAT_C_RESET | USB_PORT_STAT_C_ENABLE;
+        d_fnend(3, dev, "(%p, %u) = 0\n", wusbhc, port_idx);
+        return 0;
+}
+
+/*
+ * Refresh the list of keep alives to emit in the MMC
+ *
+ * Some devices don't respond to keep alives unless they've been
+ * authenticated, so skip unauthenticated devices.
+ *
+ * We only publish the first four devices that have a coming timeout
+ * condition. Then when we are done processing those, we go for the
+ * next ones. We ignore the ones that have timed out already (they'll
+ * be purged).
+ *
+ * This might cause the first devices to timeout the last devices in
+ * the port array...FIXME: come up with a better algorithm?
+ *
+ * Note we can't do much about MMC's ops errors; we hope next refresh
+ * will kind of handle it.
+ *
+ * NOTE: @wusbhc->mutex is locked
+ */
+static void __wusbhc_keep_alive(struct wusbhc *wusbhc)
+{
+        struct device *dev = wusbhc->dev;
+        unsigned cnt;
+        struct wusb_dev *wusb_dev;
+        struct wusb_port *wusb_port;
+        struct wuie_keep_alive *ie = &wusbhc->keep_alive_ie;
+        unsigned keep_alives, old_keep_alives;
+
+        old_keep_alives = ie->hdr.bLength - sizeof(ie->hdr);
+        keep_alives = 0;
+        for (cnt = 0;
+             keep_alives <= WUIE_ELT_MAX && cnt < wusbhc->ports_max;
+             cnt++) {
+                unsigned tt = msecs_to_jiffies(wusbhc->trust_timeout);
+
+                wusb_port = wusb_port_by_idx(wusbhc, cnt);
+                wusb_dev = wusb_port->wusb_dev;
+
+                if (wusb_dev == NULL)
+                        continue;
+                if (wusb_dev->usb_dev == NULL || !wusb_dev->usb_dev->authenticated)
+                        continue;
+
+                if (time_after(jiffies, wusb_dev->entry_ts + tt)) {
+                        dev_err(dev, "KEEPALIVE: device %u timed out\n",
+                                wusb_dev->addr);
+                        __wusbhc_dev_disconnect(wusbhc, wusb_port);
+                } else if (time_after(jiffies, wusb_dev->entry_ts + tt/2)) {
+                        /* Approaching timeout cut out, need to refresh */
+                        ie->bDeviceAddress[keep_alives++] = wusb_dev->addr;
+                }
+        }
+        if (keep_alives & 0x1)  /* pad to even number ([WUSB] section 7.5.9) */
+                ie->bDeviceAddress[keep_alives++] = 0x7f;
+        ie->hdr.bLength = sizeof(ie->hdr) +
+                keep_alives*sizeof(ie->bDeviceAddress[0]);
+        if (keep_alives > 0)
+                wusbhc_mmcie_set(wusbhc, 10, 5, &ie->hdr);
+        else if (old_keep_alives != 0)
+                wusbhc_mmcie_rm(wusbhc, &ie->hdr);
+}
+
+/*
+ * Do a run through all devices checking for timeouts
+ */
+static void wusbhc_keep_alive_run(struct work_struct *ws)
+{
+        struct delayed_work *dw =
+                container_of(ws, struct delayed_work, work);
+        struct wusbhc *wusbhc =
+                container_of(dw, struct wusbhc, keep_alive_timer);
+
+        d_fnstart(5, wusbhc->dev, "(wusbhc %p)\n", wusbhc);
+        if (wusbhc->active) {
+                mutex_lock(&wusbhc->mutex);
+                __wusbhc_keep_alive(wusbhc);
+                mutex_unlock(&wusbhc->mutex);
+                queue_delayed_work(wusbd, &wusbhc->keep_alive_timer,
+                                   (wusbhc->trust_timeout * CONFIG_HZ)/1000/2);
+        }
+        d_fnend(5, wusbhc->dev, "(wusbhc %p) = void\n", wusbhc);
+        return;
+}
+
+/*
+ * Find the wusb_dev from its device address.
+ *
+ * The device can be found directly from the address (see
+ * wusb_cack_add() for where the device address is set to port_idx
+ * +2), except when the address is zero.
+ */
+static struct wusb_dev *wusbhc_find_dev_by_addr(struct wusbhc *wusbhc, u8 addr)
+{
+        int p;
+
+        if (addr == 0xff) /* unconnected */
+                return NULL;
+
+        if (addr > 0) {
+                int port = (addr & ~0x80) - 2;
+                if (port < 0 || port >= wusbhc->ports_max)
+                        return NULL;
+                return wusb_port_by_idx(wusbhc, port)->wusb_dev;
+        }
+
+        /* Look for the device with address 0. */
+        for (p = 0; p < wusbhc->ports_max; p++) {
+                struct wusb_dev *wusb_dev = wusb_port_by_idx(wusbhc, p)->wusb_dev;
+                if (wusb_dev && wusb_dev->addr == addr)
+                        return wusb_dev;
+        }
+        return NULL;
+}
+
+/*
+ * Handle a DN_Alive notification (WUSB1.0[7.6.1])
+ *
+ * This just updates the device activity timestamp and then refreshes
+ * the keep alive IE.
+ *
+ * @wusbhc shall be referenced and unlocked
+ */
+static void wusbhc_handle_dn_alive(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev)
+{
+        struct device *dev = wusbhc->dev;
+
+        d_printf(2, dev, "DN ALIVE: device 0x%02x pong\n", wusb_dev->addr);
+
+        mutex_lock(&wusbhc->mutex);
+        wusb_dev->entry_ts = jiffies;
+        __wusbhc_keep_alive(wusbhc);
+        mutex_unlock(&wusbhc->mutex);
+}
+
+/*
+ * Handle a DN_Connect notification (WUSB1.0[7.6.1])
+ *
+ * @wusbhc
+ * @pkt_hdr
+ * @size:    Size of the buffer where the notification resides; if the
+ *           notification data suggests there should be more data than
+ *           available, an error will be signaled and the whole buffer
+ *           consumed.
+ *
+ * @wusbhc->mutex shall be held
+ */
+static void wusbhc_handle_dn_connect(struct wusbhc *wusbhc,
+                                     struct wusb_dn_hdr *dn_hdr,
+                                     size_t size)
+{
+        struct device *dev = wusbhc->dev;
+        struct wusb_dn_connect *dnc;
+        char pr_cdid[WUSB_CKHDID_STRSIZE];
+        static const char *beacon_behaviour[] = {
+                "reserved",
+                "self-beacon",
+                "directed-beacon",
+                "no-beacon"
+        };
+
+        d_fnstart(3, dev, "(%p, %p, %zu)\n", wusbhc, dn_hdr, size);
+        if (size < sizeof(*dnc)) {
+                dev_err(dev, "DN CONNECT: short notification (%zu < %zu)\n",
+                        size, sizeof(*dnc));
+                goto out;
+        }
+
+        dnc = container_of(dn_hdr, struct wusb_dn_connect, hdr);
+        ckhdid_printf(pr_cdid, sizeof(pr_cdid), &dnc->CDID);
+        dev_info(dev, "DN CONNECT: device %s @ %x (%s) wants to %s\n",
+                 pr_cdid,
+                 wusb_dn_connect_prev_dev_addr(dnc),
+                 beacon_behaviour[wusb_dn_connect_beacon_behavior(dnc)],
+                 wusb_dn_connect_new_connection(dnc) ? "connect" : "reconnect");
+        /* ACK the connect */
+        wusbhc_devconnect_ack(wusbhc, dnc, pr_cdid);
+out:
+        d_fnend(3, dev, "(%p, %p, %zu) = void\n",
+                wusbhc, dn_hdr, size);
+        return;
+}
+
+/*
+ * Handle a DN_Disconnect notification (WUSB1.0[7.6.1])
+ *
+ * Device is going down -- do the disconnect.
+ *
+ * @wusbhc shall be referenced and unlocked
+ */
+static void wusbhc_handle_dn_disconnect(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev)
+{
+        struct device *dev = wusbhc->dev;
+
+        dev_info(dev, "DN DISCONNECT: device 0x%02x going down\n", wusb_dev->addr);
+
+        mutex_lock(&wusbhc->mutex);
+        __wusbhc_dev_disconnect(wusbhc, wusb_port_by_idx(wusbhc, wusb_dev->port_idx));
+        mutex_unlock(&wusbhc->mutex);
+}
+
+/*
+ * Reset a WUSB device on a HWA
+ *
+ * @wusbhc
+ * @port_idx   Index of the port where the device is
+ *
+ * In Wireless USB, a reset is more or less equivalent to a full
+ * disconnect; so we just do a full disconnect and send the device a
+ * Device Reset IE (WUSB1.0[7.5.11]) giving it a few millisecs (6 MMCs).
+ *
+ * @wusbhc should be refcounted and unlocked
+ */
+int wusbhc_dev_reset(struct wusbhc *wusbhc, u8 port_idx)
+{
+        int result;
+        struct device *dev = wusbhc->dev;
+        struct wusb_dev *wusb_dev;
+        struct wuie_reset *ie;
+
+        d_fnstart(3, dev, "(%p, %u)\n", wusbhc, port_idx);
+        mutex_lock(&wusbhc->mutex);
+        result = 0;
+        wusb_dev = wusb_port_by_idx(wusbhc, port_idx)->wusb_dev;
+        if (wusb_dev == NULL) {
+                /* reset no device? ignore */
+                dev_dbg(dev, "RESET: no device at port %u, ignoring\n",
+                        port_idx);
+                goto error_unlock;
+        }
+        result = -ENOMEM;
+        ie = kzalloc(sizeof(*ie), GFP_KERNEL);
+        if (ie == NULL)
+                goto error_unlock;
+        ie->hdr.bLength = sizeof(ie->hdr) + sizeof(ie->CDID);
+        ie->hdr.bIEIdentifier = WUIE_ID_RESET_DEVICE;
+        ie->CDID = wusb_dev->cdid;
+        result = wusbhc_mmcie_set(wusbhc, 0xff, 6, &ie->hdr);
+        if (result < 0) {
+                dev_err(dev, "RESET: cant's set MMC: %d\n", result);
+                goto error_kfree;
+        }
+        __wusbhc_dev_disconnect(wusbhc, wusb_port_by_idx(wusbhc, port_idx));
+
+        /* 120ms, hopefully 6 MMCs (FIXME) */
+        msleep(120);
+        wusbhc_mmcie_rm(wusbhc, &ie->hdr);
+error_kfree:
+        kfree(ie);
+error_unlock:
+        mutex_unlock(&wusbhc->mutex);
+        d_fnend(3, dev, "(%p, %u) = %d\n", wusbhc, port_idx, result);
+        return result;
+}
+
+/*
+ * Handle a Device Notification coming a host
+ *
+ * The Device Notification comes from a host (HWA, DWA or WHCI)
+ * wrapped in a set of headers. Somebody else has peeled off those
+ * headers for us and we just get one Device Notifications.
+ *
+ * Invalid DNs (e.g., too short) are discarded.
+ *
+ * @wusbhc shall be referenced
+ *
+ * FIXMES:
+ *  - implement priorities as in WUSB1.0[Table 7-55]?
+ */
+void wusbhc_handle_dn(struct wusbhc *wusbhc, u8 srcaddr,
+                      struct wusb_dn_hdr *dn_hdr, size_t size)
+{
+        struct device *dev = wusbhc->dev;
+        struct wusb_dev *wusb_dev;
+
+        d_fnstart(3, dev, "(%p, %p)\n", wusbhc, dn_hdr);
+
+        if (size < sizeof(struct wusb_dn_hdr)) {
+                dev_err(dev, "DN data shorter than DN header (%d < %d)\n",
+                        (int)size, (int)sizeof(struct wusb_dn_hdr));
+                goto out;
+        }
+
+        wusb_dev = wusbhc_find_dev_by_addr(wusbhc, srcaddr);
+        if (wusb_dev == NULL && dn_hdr->bType != WUSB_DN_CONNECT) {
+                dev_dbg(dev, "ignoring DN %d from unconnected device %02x\n",
+                        dn_hdr->bType, srcaddr);
+                goto out;
+        }
+
+        switch (dn_hdr->bType) {
+        case WUSB_DN_CONNECT:
+                wusbhc_handle_dn_connect(wusbhc, dn_hdr, size);
+                break;
+        case WUSB_DN_ALIVE:
+                wusbhc_handle_dn_alive(wusbhc, wusb_dev);
+                break;
+        case WUSB_DN_DISCONNECT:
+                wusbhc_handle_dn_disconnect(wusbhc, wusb_dev);
+                break;
+        case WUSB_DN_MASAVAILCHANGED:
+        case WUSB_DN_RWAKE:
+        case WUSB_DN_SLEEP:
+                /* FIXME: handle these DNs. */
+                break;
+        case WUSB_DN_EPRDY:
+                /* The hardware handles these. */
+                break;
+        default:
+                dev_warn(dev, "unknown DN %u (%d octets) from %u\n",
+                         dn_hdr->bType, (int)size, srcaddr);
+        }
+out:
+        d_fnend(3, dev, "(%p, %p) = void\n", wusbhc, dn_hdr);
+        return;
+}
+EXPORT_SYMBOL_GPL(wusbhc_handle_dn);
+
+/*
+ * Disconnect a WUSB device from a the cluster
+ *
+ * @wusbhc
+ * @port     Fake port where the device is (wusbhc index, not USB port number).
+ *
+ * In Wireless USB, a disconnect is basically telling the device he is
+ * being disconnected and forgetting about him.
+ *
+ * We send the device a Device Disconnect IE (WUSB1.0[7.5.11]) for 100
+ * ms and then keep going.
+ *
+ * We don't do much in case of error; we always pretend we disabled
+ * the port and disconnected the device. If physically the request
+ * didn't get there (many things can fail in the way there), the stack
+ * will reject the device's communication attempts.
+ *
+ * @wusbhc should be refcounted and locked
+ */
+void __wusbhc_dev_disable(struct wusbhc *wusbhc, u8 port_idx)
+{
+        int result;
+        struct device *dev = wusbhc->dev;
+        struct wusb_dev *wusb_dev;
+        struct wuie_disconnect *ie;
+
+        d_fnstart(3, dev, "(%p, %u)\n", wusbhc, port_idx);
+        result = 0;
+        wusb_dev = wusb_port_by_idx(wusbhc, port_idx)->wusb_dev;
+        if (wusb_dev == NULL) {
+                /* reset no device? ignore */
+                dev_dbg(dev, "DISCONNECT: no device at port %u, ignoring\n",
+                        port_idx);
+                goto error;
+        }
+        __wusbhc_dev_disconnect(wusbhc, wusb_port_by_idx(wusbhc, port_idx));
+
+        result = -ENOMEM;
+        ie = kzalloc(sizeof(*ie), GFP_KERNEL);
+        if (ie == NULL)
+                goto error;
+        ie->hdr.bLength = sizeof(*ie);
+        ie->hdr.bIEIdentifier = WUIE_ID_DEVICE_DISCONNECT;
+        ie->bDeviceAddress = wusb_dev->addr;
+        result = wusbhc_mmcie_set(wusbhc, 0, 0, &ie->hdr);
+        if (result < 0) {
+                dev_err(dev, "DISCONNECT: can't set MMC: %d\n", result);
+                goto error_kfree;
+        }
+
+        /* 120ms, hopefully 6 MMCs */
+        msleep(100);
+        wusbhc_mmcie_rm(wusbhc, &ie->hdr);
+error_kfree:
+        kfree(ie);
+error:
+        d_fnend(3, dev, "(%p, %u) = %d\n", wusbhc, port_idx, result);
+        return;
+}
+
+static void wusb_cap_descr_printf(const unsigned level, struct device *dev,
+                                  const struct usb_wireless_cap_descriptor *wcd)
+{
+        d_printf(level, dev,
+                 "WUSB Capability Descriptor\n"
+                 "  bDevCapabilityType          0x%02x\n"
+                 "  bmAttributes                0x%02x\n"
+                 "  wPhyRates                   0x%04x\n"
+                 "  bmTFITXPowerInfo            0x%02x\n"
+                 "  bmFFITXPowerInfo            0x%02x\n"
+                 "  bmBandGroup                 0x%04x\n"
+                 "  bReserved                   0x%02x\n",
+                 wcd->bDevCapabilityType,
+                 wcd->bmAttributes,
+                 le16_to_cpu(wcd->wPHYRates),
+                 wcd->bmTFITXPowerInfo,
+                 wcd->bmFFITXPowerInfo,
+                 wcd->bmBandGroup,
+                 wcd->bReserved);
+}
+
+/*
+ * Walk over the BOS descriptor, verify and grok it
+ *
+ * @usb_dev: referenced
+ * @wusb_dev: referenced and unlocked
+ *
+ * The BOS descriptor is defined at WUSB1.0[7.4.1], and it defines a
+ * "flexible" way to wrap all kinds of descriptors inside an standard
+ * descriptor (wonder why they didn't use normal descriptors,
+ * btw). Not like they lack code.
+ *
+ * At the end we go to look for the WUSB Device Capabilities
+ * (WUSB1.0[7.4.1.1]) that is wrapped in a device capability descriptor
+ * that is part of the BOS descriptor set. That tells us what does the
+ * device support (dual role, beacon type, UWB PHY rates).
+ */
+static int wusb_dev_bos_grok(struct usb_device *usb_dev,
+                             struct wusb_dev *wusb_dev,
+                             struct usb_bos_descriptor *bos, size_t desc_size)
+{
+        ssize_t result;
+        struct device *dev = &usb_dev->dev;
+        void *itr, *top;
+
+        /* Walk over BOS capabilities, verify them */
+        itr = (void *)bos + sizeof(*bos);
+        top = itr + desc_size - sizeof(*bos);
+        while (itr < top) {
+                struct usb_dev_cap_header *cap_hdr = itr;
+                size_t cap_size;
+                u8 cap_type;
+                if (top - itr < sizeof(*cap_hdr)) {
+                        dev_err(dev, "Device BUG? premature end of BOS header "
+                                "data [offset 0x%02x]: only %zu bytes left\n",
+                                (int)(itr - (void *)bos), top - itr);
+                        result = -ENOSPC;
+                        goto error_bad_cap;
+                }
+                cap_size = cap_hdr->bLength;
+                cap_type = cap_hdr->bDevCapabilityType;
+                d_printf(4, dev, "BOS Capability: 0x%02x (%zu bytes)\n",
+                         cap_type, cap_size);
+                if (cap_size == 0)
+                        break;
+                if (cap_size > top - itr) {
+                        dev_err(dev, "Device BUG? premature end of BOS data "
+                                "[offset 0x%02x cap %02x %zu bytes]: "
+                                "only %zu bytes left\n",
+                                (int)(itr - (void *)bos),
+                                cap_type, cap_size, top - itr);
+                        result = -EBADF;
+                        goto error_bad_cap;
+                }
+                d_dump(3, dev, itr, cap_size);
+                switch (cap_type) {
+                case USB_CAP_TYPE_WIRELESS_USB:
+                        if (cap_size != sizeof(*wusb_dev->wusb_cap_descr))
+                                dev_err(dev, "Device BUG? WUSB Capability "
+                                        "descriptor is %zu bytes vs %zu "
+                                        "needed\n", cap_size,
+                                        sizeof(*wusb_dev->wusb_cap_descr));
+                        else {
+                                wusb_dev->wusb_cap_descr = itr;
+                                wusb_cap_descr_printf(3, dev, itr);
+                        }
+                        break;
+                default:
+                        dev_err(dev, "BUG? Unknown BOS capability 0x%02x "
+                                "(%zu bytes) at offset 0x%02x\n", cap_type,
+                                cap_size, (int)(itr - (void *)bos));
+                }
+                itr += cap_size;
+        }
+        result = 0;
+error_bad_cap:
+        return result;
+}
+
+/*
+ * Add information from the BOS descriptors to the device
+ *
+ * @usb_dev: referenced
+ * @wusb_dev: referenced and unlocked
+ *
+ * So what we do is we alloc a space for the BOS descriptor of 64
+ * bytes; read the first four bytes which include the wTotalLength
+ * field (WUSB1.0[T7-26]) and if it fits in those 64 bytes, read the
+ * whole thing. If not we realloc to that size.
+ *
+ * Then we call the groking function, that will fill up
+ * wusb_dev->wusb_cap_descr, which is what we'll need later on.
+ */
+static int wusb_dev_bos_add(struct usb_device *usb_dev,
+                            struct wusb_dev *wusb_dev)
+{
+        ssize_t result;
+        struct device *dev = &usb_dev->dev;
+        struct usb_bos_descriptor *bos;
+        size_t alloc_size = 32, desc_size = 4;
+
+        bos = kmalloc(alloc_size, GFP_KERNEL);
+        if (bos == NULL)
+                return -ENOMEM;
+        result = usb_get_descriptor(usb_dev, USB_DT_BOS, 0, bos, desc_size);
+        if (result < 4) {
+                dev_err(dev, "Can't get BOS descriptor or too short: %zd\n",
+                        result);
+                goto error_get_descriptor;
+        }
+        desc_size = le16_to_cpu(bos->wTotalLength);
+        if (desc_size >= alloc_size) {
+                kfree(bos);
+                alloc_size = desc_size;
+                bos = kmalloc(alloc_size, GFP_KERNEL);
+                if (bos == NULL)
+                        return -ENOMEM;
+        }
+        result = usb_get_descriptor(usb_dev, USB_DT_BOS, 0, bos, desc_size);
+        if (result < 0 || result != desc_size) {
+                dev_err(dev, "Can't get  BOS descriptor or too short (need "
+                        "%zu bytes): %zd\n", desc_size, result);
+                goto error_get_descriptor;
+        }
+        if (result < sizeof(*bos)
+            || le16_to_cpu(bos->wTotalLength) != desc_size) {
+                dev_err(dev, "Can't get  BOS descriptor or too short (need "
+                        "%zu bytes): %zd\n", desc_size, result);
+                goto error_get_descriptor;
+        }
+        d_printf(2, dev, "Got BOS descriptor %zd bytes, %u capabilities\n",
+                 result, bos->bNumDeviceCaps);
+        d_dump(2, dev, bos, result);
+        result = wusb_dev_bos_grok(usb_dev, wusb_dev, bos, result);
+        if (result < 0)
+                goto error_bad_bos;
+        wusb_dev->bos = bos;
+        return 0;
+
+error_bad_bos:
+error_get_descriptor:
+        kfree(bos);
+        wusb_dev->wusb_cap_descr = NULL;
+        return result;
+}
+
+static void wusb_dev_bos_rm(struct wusb_dev *wusb_dev)
+{
+        kfree(wusb_dev->bos);
+        wusb_dev->wusb_cap_descr = NULL;
+};
+
+static struct usb_wireless_cap_descriptor wusb_cap_descr_default = {
+        .bLength = sizeof(wusb_cap_descr_default),
+        .bDescriptorType = USB_DT_DEVICE_CAPABILITY,
+        .bDevCapabilityType = USB_CAP_TYPE_WIRELESS_USB,
+
+        .bmAttributes = USB_WIRELESS_BEACON_NONE,
+        .wPHYRates = cpu_to_le16(USB_WIRELESS_PHY_53),
+        .bmTFITXPowerInfo = 0,
+        .bmFFITXPowerInfo = 0,
+        .bmBandGroup = cpu_to_le16(0x0001),     /* WUSB1.0[7.4.1] bottom */
+        .bReserved = 0
+};
+
+/*
+ * USB stack's device addition Notifier Callback
+ *
+ * Called from drivers/usb/core/hub.c when a new device is added; we
+ * use this hook to perform certain WUSB specific setup work on the
+ * new device. As well, it is the first time we can connect the
+ * wusb_dev and the usb_dev. So we note it down in wusb_dev and take a
+ * reference that we'll drop.
+ *
+ * First we need to determine if the device is a WUSB device (else we
+ * ignore it). For that we use the speed setting (USB_SPEED_VARIABLE)
+ * [FIXME: maybe we'd need something more definitive]. If so, we track
+ * it's usb_busd and from there, the WUSB HC.
+ *
+ * Because all WUSB HCs are contained in a 'struct wusbhc', voila, we
+ * get the wusbhc for the device.
+ *
+ * We have a reference on @usb_dev (as we are called at the end of its
+ * enumeration).
+ *
+ * NOTE: @usb_dev locked
+ */
+static void wusb_dev_add_ncb(struct usb_device *usb_dev)
+{
+        int result = 0;
+        struct wusb_dev *wusb_dev;
+        struct wusbhc *wusbhc;
+        struct device *dev = &usb_dev->dev;
+        u8 port_idx;
+
+        if (usb_dev->wusb == 0 || usb_dev->devnum == 1)
+                return;         /* skip non wusb and wusb RHs */
+
+        d_fnstart(3, dev, "(usb_dev %p)\n", usb_dev);
+
+        wusbhc = wusbhc_get_by_usb_dev(usb_dev);
+        if (wusbhc == NULL)
+                goto error_nodev;
+        mutex_lock(&wusbhc->mutex);
+        wusb_dev = __wusb_dev_get_by_usb_dev(wusbhc, usb_dev);
+        port_idx = wusb_port_no_to_idx(usb_dev->portnum);
+        mutex_unlock(&wusbhc->mutex);
+        if (wusb_dev == NULL)
+                goto error_nodev;
+        wusb_dev->usb_dev = usb_get_dev(usb_dev);
+        usb_dev->wusb_dev = wusb_dev_get(wusb_dev);
+        result = wusb_dev_sec_add(wusbhc, usb_dev, wusb_dev);
+        if (result < 0) {
+                dev_err(dev, "Cannot enable security: %d\n", result);
+                goto error_sec_add;
+        }
+        /* Now query the device for it's BOS and attach it to wusb_dev */
+        result = wusb_dev_bos_add(usb_dev, wusb_dev);
+        if (result < 0) {
+                dev_err(dev, "Cannot get BOS descriptors: %d\n", result);
+                goto error_bos_add;
+        }
+        result = wusb_dev_sysfs_add(wusbhc, usb_dev, wusb_dev);
+        if (result < 0)
+                goto error_add_sysfs;
+out:
+        wusb_dev_put(wusb_dev);
+        wusbhc_put(wusbhc);
+error_nodev:
+        d_fnend(3, dev, "(usb_dev %p) = void\n", usb_dev);
+        return;
+
+        wusb_dev_sysfs_rm(wusb_dev);
+error_add_sysfs:
+        wusb_dev_bos_rm(wusb_dev);
+error_bos_add:
+        wusb_dev_sec_rm(wusb_dev);
+error_sec_add:
+        mutex_lock(&wusbhc->mutex);
+        __wusbhc_dev_disconnect(wusbhc, wusb_port_by_idx(wusbhc, port_idx));
+        mutex_unlock(&wusbhc->mutex);
+        goto out;
+}
+
+/*
+ * Undo all the steps done at connection by the notifier callback
+ *
+ * NOTE: @usb_dev locked
+ */
+static void wusb_dev_rm_ncb(struct usb_device *usb_dev)
+{
+        struct wusb_dev *wusb_dev = usb_dev->wusb_dev;
+
+        if (usb_dev->wusb == 0 || usb_dev->devnum == 1)
+                return;         /* skip non wusb and wusb RHs */
+
+        wusb_dev_sysfs_rm(wusb_dev);
+        wusb_dev_bos_rm(wusb_dev);
+        wusb_dev_sec_rm(wusb_dev);
+        wusb_dev->usb_dev = NULL;
+        usb_dev->wusb_dev = NULL;
+        wusb_dev_put(wusb_dev);
+        usb_put_dev(usb_dev);
+}
+
+/*
+ * Handle notifications from the USB stack (notifier call back)
+ *
+ * This is called when the USB stack does a
+ * usb_{bus,device}_{add,remove}() so we can do WUSB specific
+ * handling. It is called with [for the case of
+ * USB_DEVICE_{ADD,REMOVE} with the usb_dev locked.
+ */
+int wusb_usb_ncb(struct notifier_block *nb, unsigned long val,
+                 void *priv)
+{
+        int result = NOTIFY_OK;
+
+        switch (val) {
+        case USB_DEVICE_ADD:
+                wusb_dev_add_ncb(priv);
+                break;
+        case USB_DEVICE_REMOVE:
+                wusb_dev_rm_ncb(priv);
+                break;
+        case USB_BUS_ADD:
+                /* ignore (for now) */
+        case USB_BUS_REMOVE:
+                break;
+        default:
+                WARN_ON(1);
+                result = NOTIFY_BAD;
+        };
+        return result;
+}
+
+/*
+ * Return a referenced wusb_dev given a @wusbhc and @usb_dev
+ */
+struct wusb_dev *__wusb_dev_get_by_usb_dev(struct wusbhc *wusbhc,
+                                           struct usb_device *usb_dev)
+{
+        struct wusb_dev *wusb_dev;
+        u8 port_idx;
+
+        port_idx = wusb_port_no_to_idx(usb_dev->portnum);
+        BUG_ON(port_idx > wusbhc->ports_max);
+        wusb_dev = wusb_port_by_idx(wusbhc, port_idx)->wusb_dev;
+        if (wusb_dev != NULL)           /* ops, device is gone */
+                wusb_dev_get(wusb_dev);
+        return wusb_dev;
+}
+EXPORT_SYMBOL_GPL(__wusb_dev_get_by_usb_dev);
+
+void wusb_dev_destroy(struct kref *_wusb_dev)
+{
+        struct wusb_dev *wusb_dev
+                = container_of(_wusb_dev, struct wusb_dev, refcnt);
+        list_del_init(&wusb_dev->cack_node);
+        wusb_dev_free(wusb_dev);
+        d_fnend(1, NULL, "%s (wusb_dev %p) = void\n", __func__, wusb_dev);
+}
+EXPORT_SYMBOL_GPL(wusb_dev_destroy);
+
+/*
+ * Create all the device connect handling infrastructure
+ *
+ * This is basically the device info array, Connect Acknowledgement
+ * (cack) lists, keep-alive timers (and delayed work thread).
+ */
+int wusbhc_devconnect_create(struct wusbhc *wusbhc)
+{
+        d_fnstart(3, wusbhc->dev, "(wusbhc %p)\n", wusbhc);
+
+        wusbhc->keep_alive_ie.hdr.bIEIdentifier = WUIE_ID_KEEP_ALIVE;
+        wusbhc->keep_alive_ie.hdr.bLength = sizeof(wusbhc->keep_alive_ie.hdr);
+        INIT_DELAYED_WORK(&wusbhc->keep_alive_timer, wusbhc_keep_alive_run);
+
+        wusbhc->cack_ie.hdr.bIEIdentifier = WUIE_ID_CONNECTACK;
+        wusbhc->cack_ie.hdr.bLength = sizeof(wusbhc->cack_ie.hdr);
+        INIT_LIST_HEAD(&wusbhc->cack_list);
+
+        d_fnend(3, wusbhc->dev, "(wusbhc %p) = void\n", wusbhc);
+        return 0;
+}
+
+/*
+ * Release all resources taken by the devconnect stuff
+ */
+void wusbhc_devconnect_destroy(struct wusbhc *wusbhc)
+{
+        d_fnstart(3, wusbhc->dev, "(wusbhc %p)\n", wusbhc);
+        d_fnend(3, wusbhc->dev, "(wusbhc %p) = void\n", wusbhc);
+}
+
+/*
+ * wusbhc_devconnect_start - start accepting device connections
+ * @wusbhc: the WUSB HC
+ *
+ * Sets the Host Info IE to accept all new connections.
+ *
+ * FIXME: This also enables the keep alives but this is not necessary
+ * until there are connected and authenticated devices.
+ */
+int wusbhc_devconnect_start(struct wusbhc *wusbhc,
+                            const struct wusb_ckhdid *chid)
+{
+        struct device *dev = wusbhc->dev;
+        struct wuie_host_info *hi;
+        int result;
+
+        hi = kzalloc(sizeof(*hi), GFP_KERNEL);
+        if (hi == NULL)
+                return -ENOMEM;
+
+        hi->hdr.bLength       = sizeof(*hi);
+        hi->hdr.bIEIdentifier = WUIE_ID_HOST_INFO;
+        hi->attributes        = cpu_to_le16((wusbhc->rsv->stream << 3) | WUIE_HI_CAP_ALL);
+        hi->CHID              = *chid;
+        result = wusbhc_mmcie_set(wusbhc, 0, 0, &hi->hdr);
+        if (result < 0) {
+                dev_err(dev, "Cannot add Host Info MMCIE: %d\n", result);
+                goto error_mmcie_set;
+        }
+        wusbhc->wuie_host_info = hi;
+
+        queue_delayed_work(wusbd, &wusbhc->keep_alive_timer,
+                           (wusbhc->trust_timeout*CONFIG_HZ)/1000/2);
+
+        return 0;
+
+error_mmcie_set:
+        kfree(hi);
+        return result;
+}
+
+/*
+ * wusbhc_devconnect_stop - stop managing connected devices
+ * @wusbhc: the WUSB HC
+ *
+ * Removes the Host Info IE and stops the keep alives.
+ *
+ * FIXME: should this disconnect all devices?
+ */
+void wusbhc_devconnect_stop(struct wusbhc *wusbhc)
+{
+        cancel_delayed_work_sync(&wusbhc->keep_alive_timer);
+        WARN_ON(!list_empty(&wusbhc->cack_list));
+
+        wusbhc_mmcie_rm(wusbhc, &wusbhc->wuie_host_info->hdr);
+        kfree(wusbhc->wuie_host_info);
+        wusbhc->wuie_host_info = NULL;
+}
+
+/*
+ * wusb_set_dev_addr - set the WUSB device address used by the host
+ * @wusbhc: the WUSB HC the device is connect to
+ * @wusb_dev: the WUSB device
+ * @addr: new device address
+ */
+int wusb_set_dev_addr(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev, u8 addr)
+{
+        int result;
+
+        wusb_dev->addr = addr;
+        result = wusbhc->dev_info_set(wusbhc, wusb_dev);
+        if (result < 0)
+                dev_err(wusbhc->dev, "device %d: failed to set device "
+                        "address\n", wusb_dev->port_idx);
+        else
+                dev_info(wusbhc->dev, "device %d: %s addr %u\n",
+                         wusb_dev->port_idx,
+                         (addr & WUSB_DEV_ADDR_UNAUTH) ? "unauth" : "auth",
+                         wusb_dev->addr);
+
+        return result;
+}
diff --git a/drivers/usb/wusbcore/mmc.c b/drivers/usb/wusbcore/mmc.c
new file mode 100644
index 000000000000..cfa77a01cebd
--- /dev/null
+++ b/drivers/usb/wusbcore/mmc.c
@@ -0,0 +1,321 @@
+/*
+ * WUSB Wire Adapter: Control/Data Streaming Interface (WUSB[8])
+ * MMC (Microscheduled Management Command) handling
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * WUIEs and MMC IEs...well, they are almost the same at the end. MMC
+ * IEs are Wireless USB IEs that go into the MMC period...[what is
+ * that? look in Design-overview.txt].
+ *
+ *
+ * This is a simple subsystem to keep track of which IEs are being
+ * sent by the host in the MMC period.
+ *
+ * For each WUIE we ask to send, we keep it in an array, so we can
+ * request its removal later, or replace the content. They are tracked
+ * by pointer, so be sure to use the same pointer if you want to
+ * remove it or update the contents.
+ *
+ * FIXME:
+ *  - add timers that autoremove intervalled IEs?
+ */
+#include <linux/usb/wusb.h>
+#include "wusbhc.h"
+
+/* Initialize the MMCIEs handling mechanism */
+int wusbhc_mmcie_create(struct wusbhc *wusbhc)
+{
+        u8 mmcies = wusbhc->mmcies_max;
+        wusbhc->mmcie = kcalloc(mmcies, sizeof(wusbhc->mmcie[0]), GFP_KERNEL);
+        if (wusbhc->mmcie == NULL)
+                return -ENOMEM;
+        mutex_init(&wusbhc->mmcie_mutex);
+        return 0;
+}
+
+/* Release resources used by the MMCIEs handling mechanism */
+void wusbhc_mmcie_destroy(struct wusbhc *wusbhc)
+{
+        kfree(wusbhc->mmcie);
+}
+
+/*
+ * Add or replace an MMC Wireless USB IE.
+ *
+ * @interval:    See WUSB1.0[8.5.3.1]
+ * @repeat_cnt:  See WUSB1.0[8.5.3.1]
+ * @handle:      See WUSB1.0[8.5.3.1]
+ * @wuie:        Pointer to the header of the WUSB IE data to add.
+ *               MUST BE allocated in a kmalloc buffer (no stack or
+ *               vmalloc).
+ *               THE CALLER ALWAYS OWNS THE POINTER (we don't free it
+ *               on remove, we just forget about it).
+ * @returns:     0 if ok, < 0 errno code on error.
+ *
+ * Goes over the *whole* @wusbhc->mmcie array looking for (a) the
+ * first free spot and (b) if @wuie is already in the array (aka:
+ * transmitted in the MMCs) the spot were it is.
+ *
+ * If present, we "overwrite it" (update).
+ *
+ *
+ * NOTE: Need special ordering rules -- see below WUSB1.0 Table 7-38.
+ *       The host uses the handle as the 'sort' index. We
+ *       allocate the last one always for the WUIE_ID_HOST_INFO, and
+ *       the rest, first come first serve in inverse order.
+ *
+ *       Host software must make sure that it adds the other IEs in
+ *       the right order... the host hardware is responsible for
+ *       placing the WCTA IEs in the right place with the other IEs
+ *       set by host software.
+ *
+ * NOTE: we can access wusbhc->wa_descr without locking because it is
+ *       read only.
+ */
+int wusbhc_mmcie_set(struct wusbhc *wusbhc, u8 interval, u8 repeat_cnt,
+                     struct wuie_hdr *wuie)
+{
+        int result = -ENOBUFS;
+        unsigned handle, itr;
+
+        /* Search a handle, taking into account the ordering */
+        mutex_lock(&wusbhc->mmcie_mutex);
+        switch (wuie->bIEIdentifier) {
+        case WUIE_ID_HOST_INFO:
+                /* Always last */
+                handle = wusbhc->mmcies_max - 1;
+                break;
+        case WUIE_ID_ISOCH_DISCARD:
+                dev_err(wusbhc->dev, "Special ordering case for WUIE ID 0x%x "
+                        "unimplemented\n", wuie->bIEIdentifier);
+                result = -ENOSYS;
+                goto error_unlock;
+        default:
+                /* search for it or find the last empty slot */
+                handle = ~0;
+                for (itr = 0; itr < wusbhc->mmcies_max - 1; itr++) {
+                        if (wusbhc->mmcie[itr] == wuie) {
+                                handle = itr;
+                                break;
+                        }
+                        if (wusbhc->mmcie[itr] == NULL)
+                                handle = itr;
+                }
+                if (handle == ~0)
+                        goto error_unlock;
+        }
+        result = (wusbhc->mmcie_add)(wusbhc, interval, repeat_cnt, handle,
+                                     wuie);
+        if (result >= 0)
+                wusbhc->mmcie[handle] = wuie;
+error_unlock:
+        mutex_unlock(&wusbhc->mmcie_mutex);
+        return result;
+}
+EXPORT_SYMBOL_GPL(wusbhc_mmcie_set);
+
+/*
+ * Remove an MMC IE previously added with wusbhc_mmcie_set()
+ *
+ * @wuie        Pointer used to add the WUIE
+ */
+void wusbhc_mmcie_rm(struct wusbhc *wusbhc, struct wuie_hdr *wuie)
+{
+        int result;
+        unsigned handle, itr;
+
+        mutex_lock(&wusbhc->mmcie_mutex);
+        for (itr = 0; itr < wusbhc->mmcies_max; itr++) {
+                if (wusbhc->mmcie[itr] == wuie) {
+                        handle = itr;
+                        goto found;
+                }
+        }
+        mutex_unlock(&wusbhc->mmcie_mutex);
+        return;
+
+found:
+        result = (wusbhc->mmcie_rm)(wusbhc, handle);
+        if (result == 0)
+                wusbhc->mmcie[itr] = NULL;
+        mutex_unlock(&wusbhc->mmcie_mutex);
+}
+EXPORT_SYMBOL_GPL(wusbhc_mmcie_rm);
+
+/*
+ * wusbhc_start - start transmitting MMCs and accepting connections
+ * @wusbhc: the HC to start
+ * @chid: the CHID to use for this host
+ *
+ * Establishes a cluster reservation, enables device connections, and
+ * starts MMCs with appropriate DNTS parameters.
+ */
+int wusbhc_start(struct wusbhc *wusbhc, const struct wusb_ckhdid *chid)
+{
+        int result;
+        struct device *dev = wusbhc->dev;
+
+        WARN_ON(wusbhc->wuie_host_info != NULL);
+
+        result = wusbhc_rsv_establish(wusbhc);
+        if (result < 0) {
+                dev_err(dev, "cannot establish cluster reservation: %d\n",
+                        result);
+                goto error_rsv_establish;
+        }
+
+        result = wusbhc_devconnect_start(wusbhc, chid);
+        if (result < 0) {
+                dev_err(dev, "error enabling device connections: %d\n", result);
+                goto error_devconnect_start;
+        }
+
+        result = wusbhc_sec_start(wusbhc);
+        if (result < 0) {
+                dev_err(dev, "error starting security in the HC: %d\n", result);
+                goto error_sec_start;
+        }
+        /* FIXME: the choice of the DNTS parameters is somewhat
+         * arbitrary */
+        result = wusbhc->set_num_dnts(wusbhc, 0, 15);
+        if (result < 0) {
+                dev_err(dev, "Cannot set DNTS parameters: %d\n", result);
+                goto error_set_num_dnts;
+        }
+        result = wusbhc->start(wusbhc);
+        if (result < 0) {
+                dev_err(dev, "error starting wusbch: %d\n", result);
+                goto error_wusbhc_start;
+        }
+        wusbhc->active = 1;
+        return 0;
+
+error_wusbhc_start:
+        wusbhc_sec_stop(wusbhc);
+error_set_num_dnts:
+error_sec_start:
+        wusbhc_devconnect_stop(wusbhc);
+error_devconnect_start:
+        wusbhc_rsv_terminate(wusbhc);
+error_rsv_establish:
+        return result;
+}
+
+/*
+ * Disconnect all from the WUSB Channel
+ *
+ * Send a Host Disconnect IE in the MMC, wait, don't send it any more
+ */
+static int __wusbhc_host_disconnect_ie(struct wusbhc *wusbhc)
+{
+        int result = -ENOMEM;
+        struct wuie_host_disconnect *host_disconnect_ie;
+        might_sleep();
+        host_disconnect_ie = kmalloc(sizeof(*host_disconnect_ie), GFP_KERNEL);
+        if (host_disconnect_ie == NULL)
+                goto error_alloc;
+        host_disconnect_ie->hdr.bLength       = sizeof(*host_disconnect_ie);
+        host_disconnect_ie->hdr.bIEIdentifier = WUIE_ID_HOST_DISCONNECT;
+        result = wusbhc_mmcie_set(wusbhc, 0, 0, &host_disconnect_ie->hdr);
+        if (result < 0)
+                goto error_mmcie_set;
+
+        /* WUSB1.0[8.5.3.1 & 7.5.2] */
+        msleep(100);
+        wusbhc_mmcie_rm(wusbhc, &host_disconnect_ie->hdr);
+error_mmcie_set:
+        kfree(host_disconnect_ie);
+error_alloc:
+        return result;
+}
+
+/*
+ * wusbhc_stop - stop transmitting MMCs
+ * @wusbhc: the HC to stop
+ *
+ * Send a Host Disconnect IE, wait, remove all the MMCs (stop sending MMCs).
+ *
+ * If we can't allocate a Host Stop IE, screw it, we don't notify the
+ * devices we are disconnecting...
+ */
+void wusbhc_stop(struct wusbhc *wusbhc)
+{
+        if (wusbhc->active) {
+                wusbhc->active = 0;
+                wusbhc->stop(wusbhc);
+                wusbhc_sec_stop(wusbhc);
+                __wusbhc_host_disconnect_ie(wusbhc);
+                wusbhc_devconnect_stop(wusbhc);
+                wusbhc_rsv_terminate(wusbhc);
+        }
+}
+EXPORT_SYMBOL_GPL(wusbhc_stop);
+
+/*
+ * Change the CHID in a WUSB Channel
+ *
+ * If it is just a new CHID, send a Host Disconnect IE and then change
+ * the CHID IE.
+ */
+static int __wusbhc_chid_change(struct wusbhc *wusbhc,
+                                const struct wusb_ckhdid *chid)
+{
+        int result = -ENOSYS;
+        struct device *dev = wusbhc->dev;
+        dev_err(dev, "%s() not implemented yet\n", __func__);
+        return result;
+
+        BUG_ON(wusbhc->wuie_host_info == NULL);
+        __wusbhc_host_disconnect_ie(wusbhc);
+        wusbhc->wuie_host_info->CHID = *chid;
+        result = wusbhc_mmcie_set(wusbhc, 0, 0, &wusbhc->wuie_host_info->hdr);
+        if (result < 0)
+                dev_err(dev, "Can't update Host Info WUSB IE: %d\n", result);
+        return result;
+}
+
+/*
+ * Set/reset/update a new CHID
+ *
+ * Depending on the previous state of the MMCs, start, stop or change
+ * the sent MMC. This effectively switches the host controller on and
+ * off (radio wise).
+ */
+int wusbhc_chid_set(struct wusbhc *wusbhc, const struct wusb_ckhdid *chid)
+{
+        int result = 0;
+
+        if (memcmp(chid, &wusb_ckhdid_zero, sizeof(chid)) == 0)
+                chid = NULL;
+
+        mutex_lock(&wusbhc->mutex);
+        if (wusbhc->active) {
+                if (chid)
+                        result = __wusbhc_chid_change(wusbhc, chid);
+                else
+                        wusbhc_stop(wusbhc);
+        } else {
+                if (chid)
+                        wusbhc_start(wusbhc, chid);
+        }
+        mutex_unlock(&wusbhc->mutex);
+        return result;
+}
+EXPORT_SYMBOL_GPL(wusbhc_chid_set);
diff --git a/drivers/usb/wusbcore/pal.c b/drivers/usb/wusbcore/pal.c
new file mode 100644
index 000000000000..7cc51e9905cf
--- /dev/null
+++ b/drivers/usb/wusbcore/pal.c
@@ -0,0 +1,42 @@
+/*
+ * Wireless USB Host Controller
+ * UWB Protocol Adaptation Layer (PAL) glue.
+ *
+ * Copyright (C) 2008 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "wusbhc.h"
+
+/**
+ * wusbhc_pal_register - register the WUSB HC as a UWB PAL
+ * @wusbhc: the WUSB HC
+ */
+int wusbhc_pal_register(struct wusbhc *wusbhc)
+{
+        uwb_pal_init(&wusbhc->pal);
+
+        wusbhc->pal.name   = "wusbhc";
+        wusbhc->pal.device = wusbhc->usb_hcd.self.controller;
+
+        return uwb_pal_register(wusbhc->uwb_rc, &wusbhc->pal);
+}
+
+/**
+ * wusbhc_pal_register - unregister the WUSB HC as a UWB PAL
+ * @wusbhc: the WUSB HC
+ */
+void wusbhc_pal_unregister(struct wusbhc *wusbhc)
+{
+        uwb_pal_unregister(wusbhc->uwb_rc, &wusbhc->pal);
+}
diff --git a/drivers/usb/wusbcore/reservation.c b/drivers/usb/wusbcore/reservation.c
new file mode 100644
index 000000000000..fc63e77ded2d
--- /dev/null
+++ b/drivers/usb/wusbcore/reservation.c
@@ -0,0 +1,115 @@
+/*
+ * WUSB cluster reservation management
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/kernel.h>
+#include <linux/uwb.h>
+
+#include "wusbhc.h"
+
+/*
+ * WUSB cluster reservations are multicast reservations with the
+ * broadcast cluster ID (BCID) as the target DevAddr.
+ *
+ * FIXME: consider adjusting the reservation depending on what devices
+ * are attached.
+ */
+
+static int wusbhc_bwa_set(struct wusbhc *wusbhc, u8 stream,
+        const struct uwb_mas_bm *mas)
+{
+        if (mas == NULL)
+                mas = &uwb_mas_bm_zero;
+        return wusbhc->bwa_set(wusbhc, stream, mas);
+}
+
+/**
+ * wusbhc_rsv_complete_cb - WUSB HC reservation complete callback
+ * @rsv:    the reservation
+ *
+ * Either set or clear the HC's view of the reservation.
+ *
+ * FIXME: when a reservation is denied the HC should be stopped.
+ */
+static void wusbhc_rsv_complete_cb(struct uwb_rsv *rsv)
+{
+        struct wusbhc *wusbhc = rsv->pal_priv;
+        struct device *dev = wusbhc->dev;
+        char buf[72];
+
+        switch (rsv->state) {
+        case UWB_RSV_STATE_O_ESTABLISHED:
+                bitmap_scnprintf(buf, sizeof(buf), rsv->mas.bm, UWB_NUM_MAS);
+                dev_dbg(dev, "established reservation: %s\n", buf);
+                wusbhc_bwa_set(wusbhc, rsv->stream, &rsv->mas);
+                break;
+        case UWB_RSV_STATE_NONE:
+                dev_dbg(dev, "removed reservation\n");
+                wusbhc_bwa_set(wusbhc, 0, NULL);
+                wusbhc->rsv = NULL;
+                break;
+        default:
+                dev_dbg(dev, "unexpected reservation state: %d\n", rsv->state);
+                break;
+        }
+}
+
+
+/**
+ * wusbhc_rsv_establish - establish a reservation for the cluster
+ * @wusbhc: the WUSB HC requesting a bandwith reservation
+ */
+int wusbhc_rsv_establish(struct wusbhc *wusbhc)
+{
+        struct uwb_rc *rc = wusbhc->uwb_rc;
+        struct uwb_rsv *rsv;
+        struct uwb_dev_addr bcid;
+        int ret;
+
+        rsv = uwb_rsv_create(rc, wusbhc_rsv_complete_cb, wusbhc);
+        if (rsv == NULL)
+                return -ENOMEM;
+
+        bcid.data[0] = wusbhc->cluster_id;
+        bcid.data[1] = 0;
+
+        rsv->owner = &rc->uwb_dev;
+        rsv->target.type = UWB_RSV_TARGET_DEVADDR;
+        rsv->target.devaddr = bcid;
+        rsv->type = UWB_DRP_TYPE_PRIVATE;
+        rsv->max_mas = 256;
+        rsv->min_mas = 16;  /* one MAS per zone? */
+        rsv->sparsity = 16; /* at least one MAS in each zone? */
+        rsv->is_multicast = true;
+
+        ret = uwb_rsv_establish(rsv);
+        if (ret == 0)
+                wusbhc->rsv = rsv;
+        else
+                uwb_rsv_destroy(rsv);
+        return ret;
+}
+
+
+/**
+ * wusbhc_rsv_terminate - terminate any cluster reservation
+ * @wusbhc: the WUSB host whose reservation is to be terminated
+ */
+void wusbhc_rsv_terminate(struct wusbhc *wusbhc)
+{
+        if (wusbhc->rsv)
+                uwb_rsv_terminate(wusbhc->rsv);
+}
diff --git a/drivers/usb/wusbcore/rh.c b/drivers/usb/wusbcore/rh.c
new file mode 100644
index 000000000000..267a64325106
--- /dev/null
+++ b/drivers/usb/wusbcore/rh.c
@@ -0,0 +1,477 @@
+/*
+ * Wireless USB Host Controller
+ * Root Hub operations
+ *
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * We fake a root hub that has fake ports (as many as simultaneous
+ * devices the Wireless USB Host Controller can deal with). For each
+ * port we keep an state in @wusbhc->port[index] identical to the one
+ * specified in the USB2.0[ch11] spec and some extra device
+ * information that complements the one in 'struct usb_device' (as
+ * this lacs a hcpriv pointer).
+ *
+ * Note this is common to WHCI and HWA host controllers.
+ *
+ * Through here we enable most of the state changes that the USB stack
+ * will use to connect or disconnect devices. We need to do some
+ * forced adaptation of Wireless USB device states vs. wired:
+ *
+ *        USB:                 WUSB:
+ *
+ * Port   Powered-off          port slot n/a
+ *        Powered-on           port slot available
+ *        Disconnected         port slot available
+ *        Connected            port slot assigned device
+ *                             device sent DN_Connect
+ *                             device was authenticated
+ *        Enabled              device is authenticated, transitioned
+ *                             from unauth -> auth -> default address
+ *                             -> enabled
+ *        Reset                disconnect
+ *        Disable              disconnect
+ *
+ * This maps the standard USB port states with the WUSB device states
+ * so we can fake ports without having to modify the USB stack.
+ *
+ * FIXME: this process will change in the future
+ *
+ *
+ * ENTRY POINTS
+ *
+ * Our entry points into here are, as in hcd.c, the USB stack root hub
+ * ops defined in the usb_hcd struct:
+ *
+ * wusbhc_rh_status_data()      Provide hub and port status data bitmap
+ *
+ * wusbhc_rh_control()          Execution of all the major requests
+ *                              you can do to a hub (Set|Clear
+ *                              features, get descriptors, status, etc).
+ *
+ * wusbhc_rh_[suspend|resume]() That
+ *
+ * wusbhc_rh_start_port_reset() ??? unimplemented
+ */
+#include "wusbhc.h"
+
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+/*
+ * Reset a fake port
+ *
+ * This can be called to reset a port from any other state or to reset
+ * it when connecting. In Wireless USB they are different; when doing
+ * a new connect that involves going over the authentication. When
+ * just reseting, its a different story.
+ *
+ * The Linux USB stack resets a port twice before it considers it
+ * enabled, so we have to detect and ignore that.
+ *
+ * @wusbhc is assumed referenced and @wusbhc->mutex unlocked.
+ *
+ * Supposedly we are the only thread accesing @wusbhc->port; in any
+ * case, maybe we should move the mutex locking from
+ * wusbhc_devconnect_auth() to here.
+ *
+ * @port_idx refers to the wusbhc's port index, not the USB port number
+ */
+static int wusbhc_rh_port_reset(struct wusbhc *wusbhc, u8 port_idx)
+{
+        int result = 0;
+        struct wusb_port *port = wusb_port_by_idx(wusbhc, port_idx);
+
+        d_fnstart(3, wusbhc->dev, "(wusbhc %p port_idx %u)\n",
+                  wusbhc, port_idx);
+        if (port->reset_count == 0) {
+                wusbhc_devconnect_auth(wusbhc, port_idx);
+                port->reset_count++;
+        } else if (port->reset_count == 1)
+                /* see header */
+                d_printf(2, wusbhc->dev, "Ignoring second reset on port_idx "
+                        "%u\n", port_idx);
+        else
+                result = wusbhc_dev_reset(wusbhc, port_idx);
+        d_fnend(3, wusbhc->dev, "(wusbhc %p port_idx %u) = %d\n",
+                wusbhc, port_idx, result);
+        return result;
+}
+
+/*
+ * Return the hub change status bitmap
+ *
+ * The bits in the change status bitmap are cleared when a
+ * ClearPortFeature request is issued (USB2.0[11.12.3,11.12.4].
+ *
+ * @wusbhc is assumed referenced and @wusbhc->mutex unlocked.
+ *
+ * WARNING!! This gets called from atomic context; we cannot get the
+ *           mutex--the only race condition we can find is some bit
+ *           changing just after we copy it, which shouldn't be too
+ *           big of a problem [and we can't make it an spinlock
+ *           because other parts need to take it and sleep] .
+ *
+ *           @usb_hcd is refcounted, so it won't dissapear under us
+ *           and before killing a host, the polling of the root hub
+ *           would be stopped anyway.
+ */
+int wusbhc_rh_status_data(struct usb_hcd *usb_hcd, char *_buf)
+{
+        struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+        size_t cnt, size;
+        unsigned long *buf = (unsigned long *) _buf;
+
+        d_fnstart(1, wusbhc->dev, "(wusbhc %p)\n", wusbhc);
+        /* WE DON'T LOCK, see comment */
+        size = wusbhc->ports_max + 1 /* hub bit */;
+        size = (size + 8 - 1) / 8;      /* round to bytes */
+        for (cnt = 0; cnt < wusbhc->ports_max; cnt++)
+                if (wusb_port_by_idx(wusbhc, cnt)->change)
+                        set_bit(cnt + 1, buf);
+                else
+                        clear_bit(cnt + 1, buf);
+        d_fnend(1, wusbhc->dev, "(wusbhc %p) %u, buffer:\n", wusbhc, (int)size);
+        d_dump(1, wusbhc->dev, _buf, size);
+        return size;
+}
+EXPORT_SYMBOL_GPL(wusbhc_rh_status_data);
+
+/*
+ * Return the hub's desciptor
+ *
+ * NOTE: almost cut and paste from ehci-hub.c
+ *
+ * @wusbhc is assumed referenced and @wusbhc->mutex unlocked
+ */
+static int wusbhc_rh_get_hub_descr(struct wusbhc *wusbhc, u16 wValue,
+                                   u16 wIndex,
+                                   struct usb_hub_descriptor *descr,
+                                   u16 wLength)
+{
+        u16 temp = 1 + (wusbhc->ports_max / 8);
+        u8 length = 7 + 2 * temp;
+
+        if (wLength < length)
+                return -ENOSPC;
+        descr->bDescLength = 7 + 2 * temp;
+        descr->bDescriptorType = 0x29;  /* HUB type */
+        descr->bNbrPorts = wusbhc->ports_max;
+        descr->wHubCharacteristics = cpu_to_le16(
+                0x00                    /* All ports power at once */
+                | 0x00                  /* not part of compound device */
+                | 0x10                  /* No overcurrent protection */
+                | 0x00                  /* 8 FS think time FIXME ?? */
+                | 0x00);                /* No port indicators */
+        descr->bPwrOn2PwrGood = 0;
+        descr->bHubContrCurrent = 0;
+        /* two bitmaps:  ports removable, and usb 1.0 legacy PortPwrCtrlMask */
+        memset(&descr->bitmap[0], 0, temp);
+        memset(&descr->bitmap[temp], 0xff, temp);
+        return 0;
+}
+
+/*
+ * Clear a hub feature
+ *
+ * @wusbhc is assumed referenced and @wusbhc->mutex unlocked.
+ *
+ * Nothing to do, so no locking needed ;)
+ */
+static int wusbhc_rh_clear_hub_feat(struct wusbhc *wusbhc, u16 feature)
+{
+        int result;
+        struct device *dev = wusbhc->dev;
+
+        d_fnstart(4, dev, "(%p, feature 0x%04u)\n", wusbhc, feature);
+        switch (feature) {
+        case C_HUB_LOCAL_POWER:
+                /* FIXME: maybe plug bit 0 to the power input status,
+                 * if any?
+                 * see wusbhc_rh_get_hub_status() */
+        case C_HUB_OVER_CURRENT:
+                result = 0;
+                break;
+        default:
+                result = -EPIPE;
+        }
+        d_fnend(4, dev, "(%p, feature 0x%04u), %d\n", wusbhc, feature, result);
+        return result;
+}
+
+/*
+ * Return hub status (it is always zero...)
+ *
+ * @wusbhc is assumed referenced and @wusbhc->mutex unlocked.
+ *
+ * Nothing to do, so no locking needed ;)
+ */
+static int wusbhc_rh_get_hub_status(struct wusbhc *wusbhc, u32 *buf,
+                                    u16 wLength)
+{
+        /* FIXME: maybe plug bit 0 to the power input status (if any)? */
+        *buf = 0;
+        return 0;
+}
+
+/*
+ * Set a port feature
+ *
+ * @wusbhc is assumed referenced and @wusbhc->mutex unlocked.
+ */
+static int wusbhc_rh_set_port_feat(struct wusbhc *wusbhc, u16 feature,
+                                   u8 selector, u8 port_idx)
+{
+        int result = -EINVAL;
+        struct device *dev = wusbhc->dev;
+
+        d_fnstart(4, dev, "(feat 0x%04u, selector 0x%u, port_idx %d)\n",
+                  feature, selector, port_idx);
+
+        if (port_idx > wusbhc->ports_max)
+                goto error;
+
+        switch (feature) {
+                /* According to USB2.0[11.24.2.13]p2, these features
+                 * are not required to be implemented. */
+        case USB_PORT_FEAT_C_OVER_CURRENT:
+        case USB_PORT_FEAT_C_ENABLE:
+        case USB_PORT_FEAT_C_SUSPEND:
+        case USB_PORT_FEAT_C_CONNECTION:
+        case USB_PORT_FEAT_C_RESET:
+                result = 0;
+                break;
+
+        case USB_PORT_FEAT_POWER:
+                /* No such thing, but we fake it works */
+                mutex_lock(&wusbhc->mutex);
+                wusb_port_by_idx(wusbhc, port_idx)->status |= USB_PORT_STAT_POWER;
+                mutex_unlock(&wusbhc->mutex);
+                result = 0;
+                break;
+        case USB_PORT_FEAT_RESET:
+                result = wusbhc_rh_port_reset(wusbhc, port_idx);
+                break;
+        case USB_PORT_FEAT_ENABLE:
+        case USB_PORT_FEAT_SUSPEND:
+                dev_err(dev, "(port_idx %d) set feat %d/%d UNIMPLEMENTED\n",
+                        port_idx, feature, selector);
+                result = -ENOSYS;
+                break;
+        default:
+                dev_err(dev, "(port_idx %d) set feat %d/%d UNKNOWN\n",
+                        port_idx, feature, selector);
+                result = -EPIPE;
+                break;
+        }
+error:
+        d_fnend(4, dev, "(feat 0x%04u, selector 0x%u, port_idx %d) = %d\n",
+                feature, selector, port_idx, result);
+        return result;
+}
+
+/*
+ * Clear a port feature...
+ *
+ * @wusbhc is assumed referenced and @wusbhc->mutex unlocked.
+ */
+static int wusbhc_rh_clear_port_feat(struct wusbhc *wusbhc, u16 feature,
+                                     u8 selector, u8 port_idx)
+{
+        int result = -EINVAL;
+        struct device *dev = wusbhc->dev;
+
+        d_fnstart(4, dev, "(wusbhc %p feat 0x%04x selector %d port_idx %d)\n",
+                  wusbhc, feature, selector, port_idx);
+
+        if (port_idx > wusbhc->ports_max)
+                goto error;
+
+        mutex_lock(&wusbhc->mutex);
+        result = 0;
+        switch (feature) {
+        case USB_PORT_FEAT_POWER:       /* fake port always on */
+                /* According to USB2.0[11.24.2.7.1.4], no need to implement? */
+        case USB_PORT_FEAT_C_OVER_CURRENT:
+                break;
+        case USB_PORT_FEAT_C_RESET:
+                wusb_port_by_idx(wusbhc, port_idx)->change &= ~USB_PORT_STAT_C_RESET;
+                break;
+        case USB_PORT_FEAT_C_CONNECTION:
+                wusb_port_by_idx(wusbhc, port_idx)->change &= ~USB_PORT_STAT_C_CONNECTION;
+                break;
+        case USB_PORT_FEAT_ENABLE:
+                __wusbhc_dev_disable(wusbhc, port_idx);
+                break;
+        case USB_PORT_FEAT_C_ENABLE:
+                wusb_port_by_idx(wusbhc, port_idx)->change &= ~USB_PORT_STAT_C_ENABLE;
+                break;
+        case USB_PORT_FEAT_SUSPEND:
+        case USB_PORT_FEAT_C_SUSPEND:
+        case 0xffff:            /* ??? FIXME */
+                dev_err(dev, "(port_idx %d) Clear feat %d/%d UNIMPLEMENTED\n",
+                        port_idx, feature, selector);
+                /* dump_stack(); */
+                result = -ENOSYS;
+                break;
+        default:
+                dev_err(dev, "(port_idx %d) Clear feat %d/%d UNKNOWN\n",
+                        port_idx, feature, selector);
+                result = -EPIPE;
+                break;
+        }
+        mutex_unlock(&wusbhc->mutex);
+error:
+        d_fnend(4, dev, "(wusbhc %p feat 0x%04x selector %d port_idx %d) = "
+                "%d\n", wusbhc, feature, selector, port_idx, result);
+        return result;
+}
+
+/*
+ * Return the port's status
+ *
+ * @wusbhc is assumed referenced and @wusbhc->mutex unlocked.
+ */
+static int wusbhc_rh_get_port_status(struct wusbhc *wusbhc, u16 port_idx,
+                                     u32 *_buf, u16 wLength)
+{
+        int result = -EINVAL;
+        u16 *buf = (u16 *) _buf;
+
+        d_fnstart(1, wusbhc->dev, "(wusbhc %p port_idx %u wLength %u)\n",
+                  wusbhc, port_idx, wLength);
+        if (port_idx > wusbhc->ports_max)
+                goto error;
+        mutex_lock(&wusbhc->mutex);
+        buf[0] = cpu_to_le16(wusb_port_by_idx(wusbhc, port_idx)->status);
+        buf[1] = cpu_to_le16(wusb_port_by_idx(wusbhc, port_idx)->change);
+        result = 0;
+        mutex_unlock(&wusbhc->mutex);
+error:
+        d_fnend(1, wusbhc->dev, "(wusbhc %p) = %d, buffer:\n", wusbhc, result);
+        d_dump(1, wusbhc->dev, _buf, wLength);
+        return result;
+}
+
+/*
+ * Entry point for Root Hub operations
+ *
+ * @wusbhc is assumed referenced and @wusbhc->mutex unlocked.
+ */
+int wusbhc_rh_control(struct usb_hcd *usb_hcd, u16 reqntype, u16 wValue,
+                      u16 wIndex, char *buf, u16 wLength)
+{
+        int result = -ENOSYS;
+        struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+
+        switch (reqntype) {
+        case GetHubDescriptor:
+                result = wusbhc_rh_get_hub_descr(
+                        wusbhc, wValue, wIndex,
+                        (struct usb_hub_descriptor *) buf, wLength);
+                break;
+        case ClearHubFeature:
+                result = wusbhc_rh_clear_hub_feat(wusbhc, wValue);
+                break;
+        case GetHubStatus:
+                result = wusbhc_rh_get_hub_status(wusbhc, (u32 *)buf, wLength);
+                break;
+
+        case SetPortFeature:
+                result = wusbhc_rh_set_port_feat(wusbhc, wValue, wIndex >> 8,
+                                                 (wIndex & 0xff) - 1);
+                break;
+        case ClearPortFeature:
+                result = wusbhc_rh_clear_port_feat(wusbhc, wValue, wIndex >> 8,
+                                                   (wIndex & 0xff) - 1);
+                break;
+        case GetPortStatus:
+                result = wusbhc_rh_get_port_status(wusbhc, wIndex - 1,
+                                                   (u32 *)buf, wLength);
+                break;
+
+        case SetHubFeature:
+        default:
+                dev_err(wusbhc->dev, "%s (%p [%p], %x, %x, %x, %p, %x) "
+                        "UNIMPLEMENTED\n", __func__, usb_hcd, wusbhc, reqntype,
+                        wValue, wIndex, buf, wLength);
+                /* dump_stack(); */
+                result = -ENOSYS;
+        }
+        return result;
+}
+EXPORT_SYMBOL_GPL(wusbhc_rh_control);
+
+int wusbhc_rh_suspend(struct usb_hcd *usb_hcd)
+{
+        struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+        dev_err(wusbhc->dev, "%s (%p [%p]) UNIMPLEMENTED\n", __func__,
+                usb_hcd, wusbhc);
+        /* dump_stack(); */
+        return -ENOSYS;
+}
+EXPORT_SYMBOL_GPL(wusbhc_rh_suspend);
+
+int wusbhc_rh_resume(struct usb_hcd *usb_hcd)
+{
+        struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+        dev_err(wusbhc->dev, "%s (%p [%p]) UNIMPLEMENTED\n", __func__,
+                usb_hcd, wusbhc);
+        /* dump_stack(); */
+        return -ENOSYS;
+}
+EXPORT_SYMBOL_GPL(wusbhc_rh_resume);
+
+int wusbhc_rh_start_port_reset(struct usb_hcd *usb_hcd, unsigned port_idx)
+{
+        struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+        dev_err(wusbhc->dev, "%s (%p [%p], port_idx %u) UNIMPLEMENTED\n",
+                __func__, usb_hcd, wusbhc, port_idx);
+        WARN_ON(1);
+        return -ENOSYS;
+}
+EXPORT_SYMBOL_GPL(wusbhc_rh_start_port_reset);
+
+static void wusb_port_init(struct wusb_port *port)
+{
+        port->status |= USB_PORT_STAT_HIGH_SPEED;
+}
+
+/*
+ * Alloc fake port specific fields and status.
+ */
+int wusbhc_rh_create(struct wusbhc *wusbhc)
+{
+        int result = -ENOMEM;
+        size_t port_size, itr;
+        port_size = wusbhc->ports_max * sizeof(wusbhc->port[0]);
+        wusbhc->port = kzalloc(port_size, GFP_KERNEL);
+        if (wusbhc->port == NULL)
+                goto error_port_alloc;
+        for (itr = 0; itr < wusbhc->ports_max; itr++)
+                wusb_port_init(&wusbhc->port[itr]);
+        result = 0;
+error_port_alloc:
+        return result;
+}
+
+void wusbhc_rh_destroy(struct wusbhc *wusbhc)
+{
+        kfree(wusbhc->port);
+}
diff --git a/drivers/usb/wusbcore/security.c b/drivers/usb/wusbcore/security.c
new file mode 100644
index 000000000000..a101cad6a8d4
--- /dev/null
+++ b/drivers/usb/wusbcore/security.c
@@ -0,0 +1,642 @@
+/*
+ * Wireless USB Host Controller
+ * Security support: encryption enablement, etc
+ *
+ * Copyright (C) 2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ */
+#include <linux/types.h>
+#include <linux/usb/ch9.h>
+#include <linux/random.h>
+#include "wusbhc.h"
+
+/*
+ * DEBUG & SECURITY WARNING!!!!
+ *
+ * If you enable this past 1, the debug code will weaken the
+ * cryptographic safety of the system (on purpose, for debugging).
+ *
+ * Weaken means:
+ *   we print secret keys and intermediate values all the way,
+ */
+#undef D_LOCAL
+#define D_LOCAL 2
+#include <linux/uwb/debug.h>
+
+static void wusbhc_set_gtk_callback(struct urb *urb);
+static void wusbhc_gtk_rekey_done_work(struct work_struct *work);
+
+int wusbhc_sec_create(struct wusbhc *wusbhc)
+{
+        wusbhc->gtk.descr.bLength = sizeof(wusbhc->gtk.descr) + sizeof(wusbhc->gtk.data);
+        wusbhc->gtk.descr.bDescriptorType = USB_DT_KEY;
+        wusbhc->gtk.descr.bReserved = 0;
+
+        wusbhc->gtk_index = wusb_key_index(0, WUSB_KEY_INDEX_TYPE_GTK,
+                                           WUSB_KEY_INDEX_ORIGINATOR_HOST);
+
+        INIT_WORK(&wusbhc->gtk_rekey_done_work, wusbhc_gtk_rekey_done_work);
+
+        return 0;
+}
+
+
+/* Called when the HC is destroyed */
+void wusbhc_sec_destroy(struct wusbhc *wusbhc)
+{
+}
+
+
+/**
+ * wusbhc_next_tkid - generate a new, currently unused, TKID
+ * @wusbhc:   the WUSB host controller
+ * @wusb_dev: the device whose PTK the TKID is for
+ *            (or NULL for a TKID for a GTK)
+ *
+ * The generated TKID consist of two parts: the device's authenicated
+ * address (or 0 or a GTK); and an incrementing number.  This ensures
+ * that TKIDs cannot be shared between devices and by the time the
+ * incrementing number wraps around the older TKIDs will no longer be
+ * in use (a maximum of two keys may be active at any one time).
+ */
+static u32 wusbhc_next_tkid(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev)
+{
+        u32 *tkid;
+        u32 addr;
+
+        if (wusb_dev == NULL) {
+                tkid = &wusbhc->gtk_tkid;
+                addr = 0;
+        } else {
+                tkid = &wusb_port_by_idx(wusbhc, wusb_dev->port_idx)->ptk_tkid;
+                addr = wusb_dev->addr & 0x7f;
+        }
+
+        *tkid = (addr << 8) | ((*tkid + 1) & 0xff);
+
+        return *tkid;
+}
+
+static void wusbhc_generate_gtk(struct wusbhc *wusbhc)
+{
+        const size_t key_size = sizeof(wusbhc->gtk.data);
+        u32 tkid;
+
+        tkid = wusbhc_next_tkid(wusbhc, NULL);
+
+        wusbhc->gtk.descr.tTKID[0] = (tkid >>  0) & 0xff;
+        wusbhc->gtk.descr.tTKID[1] = (tkid >>  8) & 0xff;
+        wusbhc->gtk.descr.tTKID[2] = (tkid >> 16) & 0xff;
+
+        get_random_bytes(wusbhc->gtk.descr.bKeyData, key_size);
+}
+
+/**
+ * wusbhc_sec_start - start the security management process
+ * @wusbhc: the WUSB host controller
+ *
+ * Generate and set an initial GTK on the host controller.
+ *
+ * Called when the HC is started.
+ */
+int wusbhc_sec_start(struct wusbhc *wusbhc)
+{
+        const size_t key_size = sizeof(wusbhc->gtk.data);
+        int result;
+
+        wusbhc_generate_gtk(wusbhc);
+
+        result = wusbhc->set_gtk(wusbhc, wusbhc->gtk_tkid,
+                                 &wusbhc->gtk.descr.bKeyData, key_size);
+        if (result < 0)
+                dev_err(wusbhc->dev, "cannot set GTK for the host: %d\n",
+                        result);
+
+        return result;
+}
+
+/**
+ * wusbhc_sec_stop - stop the security management process
+ * @wusbhc: the WUSB host controller
+ *
+ * Wait for any pending GTK rekeys to stop.
+ */
+void wusbhc_sec_stop(struct wusbhc *wusbhc)
+{
+        cancel_work_sync(&wusbhc->gtk_rekey_done_work);
+}
+
+
+/** @returns encryption type name */
+const char *wusb_et_name(u8 x)
+{
+        switch (x) {
+        case USB_ENC_TYPE_UNSECURE:     return "unsecure";
+        case USB_ENC_TYPE_WIRED:        return "wired";
+        case USB_ENC_TYPE_CCM_1:        return "CCM-1";
+        case USB_ENC_TYPE_RSA_1:        return "RSA-1";
+        default:                        return "unknown";
+        }
+}
+EXPORT_SYMBOL_GPL(wusb_et_name);
+
+/*
+ * Set the device encryption method
+ *
+ * We tell the device which encryption method to use; we do this when
+ * setting up the device's security.
+ */
+static int wusb_dev_set_encryption(struct usb_device *usb_dev, int value)
+{
+        int result;
+        struct device *dev = &usb_dev->dev;
+        struct wusb_dev *wusb_dev = usb_dev->wusb_dev;
+
+        if (value) {
+                value = wusb_dev->ccm1_etd.bEncryptionValue;
+        } else {
+                /* FIXME: should be wusb_dev->etd[UNSECURE].bEncryptionValue */
+                value = 0;
+        }
+        /* Set device's */
+        result = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0),
+                        USB_REQ_SET_ENCRYPTION,
+                        USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
+                        value, 0, NULL, 0, 1000 /* FIXME: arbitrary */);
+        if (result < 0)
+                dev_err(dev, "Can't set device's WUSB encryption to "
+                        "%s (value %d): %d\n",
+                        wusb_et_name(wusb_dev->ccm1_etd.bEncryptionType),
+                        wusb_dev->ccm1_etd.bEncryptionValue,  result);
+        return result;
+}
+
+/*
+ * Set the GTK to be used by a device.
+ *
+ * The device must be authenticated.
+ */
+static int wusb_dev_set_gtk(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev)
+{
+        struct usb_device *usb_dev = wusb_dev->usb_dev;
+
+        return usb_control_msg(
+                usb_dev, usb_sndctrlpipe(usb_dev, 0),
+                USB_REQ_SET_DESCRIPTOR,
+                USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
+                USB_DT_KEY << 8 | wusbhc->gtk_index, 0,
+                &wusbhc->gtk.descr, wusbhc->gtk.descr.bLength,
+                1000);
+}
+
+
+/* FIXME: prototype for adding security */
+int wusb_dev_sec_add(struct wusbhc *wusbhc,
+                     struct usb_device *usb_dev, struct wusb_dev *wusb_dev)
+{
+        int result, bytes, secd_size;
+        struct device *dev = &usb_dev->dev;
+        struct usb_security_descriptor secd;
+        const struct usb_encryption_descriptor *etd, *ccm1_etd = NULL;
+        void *secd_buf;
+        const void *itr, *top;
+        char buf[64];
+
+        d_fnstart(3, dev, "(usb_dev %p, wusb_dev %p)\n", usb_dev, wusb_dev);
+        result = usb_get_descriptor(usb_dev, USB_DT_SECURITY,
+                                    0, &secd, sizeof(secd));
+        if (result < sizeof(secd)) {
+                dev_err(dev, "Can't read security descriptor or "
+                        "not enough data: %d\n", result);
+                goto error_secd;
+        }
+        secd_size = le16_to_cpu(secd.wTotalLength);
+        d_printf(5, dev, "got %d bytes of sec descriptor, total is %d\n",
+                 result, secd_size);
+        secd_buf = kmalloc(secd_size, GFP_KERNEL);
+        if (secd_buf == NULL) {
+                dev_err(dev, "Can't allocate space for security descriptors\n");
+                goto error_secd_alloc;
+        }
+        result = usb_get_descriptor(usb_dev, USB_DT_SECURITY,
+                                    0, secd_buf, secd_size);
+        if (result < secd_size) {
+                dev_err(dev, "Can't read security descriptor or "
+                        "not enough data: %d\n", result);
+                goto error_secd_all;
+        }
+        d_printf(5, dev, "got %d bytes of sec descriptors\n", result);
+        bytes = 0;
+        itr = secd_buf + sizeof(secd);
+        top = secd_buf + result;
+        while (itr < top) {
+                etd = itr;
+                if (top - itr < sizeof(*etd)) {
+                        dev_err(dev, "BUG: bad device security descriptor; "
+                                "not enough data (%zu vs %zu bytes left)\n",
+                                top - itr, sizeof(*etd));
+                        break;
+                }
+                if (etd->bLength < sizeof(*etd)) {
+                        dev_err(dev, "BUG: bad device encryption descriptor; "
+                                "descriptor is too short "
+                                "(%u vs %zu needed)\n",
+                                etd->bLength, sizeof(*etd));
+                        break;
+                }
+                itr += etd->bLength;
+                bytes += snprintf(buf + bytes, sizeof(buf) - bytes,
+                                  "%s (0x%02x/%02x) ",
+                                  wusb_et_name(etd->bEncryptionType),
+                                  etd->bEncryptionValue, etd->bAuthKeyIndex);
+                if (etd->bEncryptionType == USB_ENC_TYPE_CCM_1)
+                        ccm1_etd = etd;
+        }
+        /* This code only supports CCM1 as of now. */
+        /* FIXME: user has to choose which sec mode to use?
+         * In theory we want CCM */
+        if (ccm1_etd == NULL) {
+                dev_err(dev, "WUSB device doesn't support CCM1 encryption, "
+                        "can't use!\n");
+                result = -EINVAL;
+                goto error_no_ccm1;
+        }
+        wusb_dev->ccm1_etd = *ccm1_etd;
+        dev_info(dev, "supported encryption: %s; using %s (0x%02x/%02x)\n",
+                 buf, wusb_et_name(ccm1_etd->bEncryptionType),
+                 ccm1_etd->bEncryptionValue, ccm1_etd->bAuthKeyIndex);
+        result = 0;
+        kfree(secd_buf);
+out:
+        d_fnend(3, dev, "(usb_dev %p, wusb_dev %p) = %d\n",
+                usb_dev, wusb_dev, result);
+        return result;
+
+
+error_no_ccm1:
+error_secd_all:
+        kfree(secd_buf);
+error_secd_alloc:
+error_secd:
+        goto out;
+}
+
+void wusb_dev_sec_rm(struct wusb_dev *wusb_dev)
+{
+        /* Nothing so far */
+}
+
+static void hs_printk(unsigned level, struct device *dev,
+                      struct usb_handshake *hs)
+{
+        d_printf(level, dev,
+                 "  bMessageNumber: %u\n"
+                 "  bStatus:        %u\n"
+                 "  tTKID:          %02x %02x %02x\n"
+                 "  CDID:           %02x %02x %02x %02x %02x %02x %02x %02x\n"
+                 "                  %02x %02x %02x %02x %02x %02x %02x %02x\n"
+                 "  nonce:          %02x %02x %02x %02x %02x %02x %02x %02x\n"
+                 "                  %02x %02x %02x %02x %02x %02x %02x %02x\n"
+                 "  MIC:            %02x %02x %02x %02x %02x %02x %02x %02x\n",
+                 hs->bMessageNumber, hs->bStatus,
+                 hs->tTKID[2], hs->tTKID[1], hs->tTKID[0],
+                 hs->CDID[0], hs->CDID[1], hs->CDID[2], hs->CDID[3],
+                 hs->CDID[4], hs->CDID[5], hs->CDID[6], hs->CDID[7],
+                 hs->CDID[8], hs->CDID[9], hs->CDID[10], hs->CDID[11],
+                 hs->CDID[12], hs->CDID[13], hs->CDID[14], hs->CDID[15],
+                 hs->nonce[0], hs->nonce[1], hs->nonce[2], hs->nonce[3],
+                 hs->nonce[4], hs->nonce[5], hs->nonce[6], hs->nonce[7],
+                 hs->nonce[8], hs->nonce[9], hs->nonce[10], hs->nonce[11],
+                 hs->nonce[12], hs->nonce[13], hs->nonce[14], hs->nonce[15],
+                 hs->MIC[0], hs->MIC[1], hs->MIC[2], hs->MIC[3],
+                 hs->MIC[4], hs->MIC[5], hs->MIC[6], hs->MIC[7]);
+}
+
+/**
+ * Update the address of an unauthenticated WUSB device
+ *
+ * Once we have successfully authenticated, we take it to addr0 state
+ * and then to a normal address.
+ *
+ * Before the device's address (as known by it) was usb_dev->devnum |
+ * 0x80 (unauthenticated address). With this we update it to usb_dev->devnum.
+ */
+static int wusb_dev_update_address(struct wusbhc *wusbhc,
+                                   struct wusb_dev *wusb_dev)
+{
+        int result = -ENOMEM;
+        struct usb_device *usb_dev = wusb_dev->usb_dev;
+        struct device *dev = &usb_dev->dev;
+        u8 new_address = wusb_dev->addr & 0x7F;
+
+        /* Set address 0 */
+        result = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0),
+                                 USB_REQ_SET_ADDRESS, 0,
+                                 0, 0, NULL, 0, 1000 /* FIXME: arbitrary */);
+        if (result < 0) {
+                dev_err(dev, "auth failed: can't set address 0: %d\n",
+                        result);
+                goto error_addr0;
+        }
+        result = wusb_set_dev_addr(wusbhc, wusb_dev, 0);
+        if (result < 0)
+                goto error_addr0;
+        usb_ep0_reinit(usb_dev);
+
+        /* Set new (authenticated) address. */
+        result = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0),
+                                 USB_REQ_SET_ADDRESS, 0,
+                                 new_address, 0, NULL, 0,
+                                 1000 /* FIXME: arbitrary */);
+        if (result < 0) {
+                dev_err(dev, "auth failed: can't set address %u: %d\n",
+                        new_address, result);
+                goto error_addr;
+        }
+        result = wusb_set_dev_addr(wusbhc, wusb_dev, new_address);
+        if (result < 0)
+                goto error_addr;
+        usb_ep0_reinit(usb_dev);
+        usb_dev->authenticated = 1;
+error_addr:
+error_addr0:
+        return result;
+}
+
+/*
+ *
+ *
+ */
+/* FIXME: split and cleanup */
+int wusb_dev_4way_handshake(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev,
+                            struct wusb_ckhdid *ck)
+{
+        int result = -ENOMEM;
+        struct usb_device *usb_dev = wusb_dev->usb_dev;
+        struct device *dev = &usb_dev->dev;
+        u32 tkid;
+        __le32 tkid_le;
+        struct usb_handshake *hs;
+        struct aes_ccm_nonce ccm_n;
+        u8 mic[8];
+        struct wusb_keydvt_in keydvt_in;
+        struct wusb_keydvt_out keydvt_out;
+
+        hs = kzalloc(3*sizeof(hs[0]), GFP_KERNEL);
+        if (hs == NULL) {
+                dev_err(dev, "can't allocate handshake data\n");
+                goto error_kzalloc;
+        }
+
+        /* We need to turn encryption before beginning the 4way
+         * hshake (WUSB1.0[.3.2.2]) */
+        result = wusb_dev_set_encryption(usb_dev, 1);
+        if (result < 0)
+                goto error_dev_set_encryption;
+
+        tkid = wusbhc_next_tkid(wusbhc, wusb_dev);
+        tkid_le = cpu_to_le32(tkid);
+
+        hs[0].bMessageNumber = 1;
+        hs[0].bStatus = 0;
+        memcpy(hs[0].tTKID, &tkid_le, sizeof(hs[0].tTKID));
+        hs[0].bReserved = 0;
+        memcpy(hs[0].CDID, &wusb_dev->cdid, sizeof(hs[0].CDID));
+        get_random_bytes(&hs[0].nonce, sizeof(hs[0].nonce));
+        memset(hs[0].MIC, 0, sizeof(hs[0].MIC));        /* Per WUSB1.0[T7-22] */
+
+        d_printf(1, dev, "I: sending hs1:\n");
+        hs_printk(2, dev, &hs[0]);
+
+        result = usb_control_msg(
+                usb_dev, usb_sndctrlpipe(usb_dev, 0),
+                USB_REQ_SET_HANDSHAKE,
+                USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
+                1, 0, &hs[0], sizeof(hs[0]), 1000 /* FIXME: arbitrary */);
+        if (result < 0) {
+                dev_err(dev, "Handshake1: request failed: %d\n", result);
+                goto error_hs1;
+        }
+
+        /* Handshake 2, from the device -- need to verify fields */
+        result = usb_control_msg(
+                usb_dev, usb_rcvctrlpipe(usb_dev, 0),
+                USB_REQ_GET_HANDSHAKE,
+                USB_DIR_IN | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
+                2, 0, &hs[1], sizeof(hs[1]), 1000 /* FIXME: arbitrary */);
+        if (result < 0) {
+                dev_err(dev, "Handshake2: request failed: %d\n", result);
+                goto error_hs2;
+        }
+        d_printf(1, dev, "got HS2:\n");
+        hs_printk(2, dev, &hs[1]);
+
+        result = -EINVAL;
+        if (hs[1].bMessageNumber != 2) {
+                dev_err(dev, "Handshake2 failed: bad message number %u\n",
+                        hs[1].bMessageNumber);
+                goto error_hs2;
+        }
+        if (hs[1].bStatus != 0) {
+                dev_err(dev, "Handshake2 failed: bad status %u\n",
+                        hs[1].bStatus);
+                goto error_hs2;
+        }
+        if (memcmp(hs[0].tTKID, hs[1].tTKID, sizeof(hs[0].tTKID))) {
+                dev_err(dev, "Handshake2 failed: TKID mismatch "
+                        "(#1 0x%02x%02x%02x vs #2 0x%02x%02x%02x)\n",
+                        hs[0].tTKID[0], hs[0].tTKID[1], hs[0].tTKID[2],
+                        hs[1].tTKID[0], hs[1].tTKID[1], hs[1].tTKID[2]);
+                goto error_hs2;
+        }
+        if (memcmp(hs[0].CDID, hs[1].CDID, sizeof(hs[0].CDID))) {
+                dev_err(dev, "Handshake2 failed: CDID mismatch\n");
+                goto error_hs2;
+        }
+
+        /* Setup the CCM nonce */
+        memset(&ccm_n.sfn, 0, sizeof(ccm_n.sfn));       /* Per WUSB1.0[6.5.2] */
+        memcpy(ccm_n.tkid, &tkid_le, sizeof(ccm_n.tkid));
+        ccm_n.src_addr = wusbhc->uwb_rc->uwb_dev.dev_addr;
+        ccm_n.dest_addr.data[0] = wusb_dev->addr;
+        ccm_n.dest_addr.data[1] = 0;
+
+        /* Derive the KCK and PTK from CK, the CCM, H and D nonces */
+        memcpy(keydvt_in.hnonce, hs[0].nonce, sizeof(keydvt_in.hnonce));
+        memcpy(keydvt_in.dnonce, hs[1].nonce, sizeof(keydvt_in.dnonce));
+        result = wusb_key_derive(&keydvt_out, ck->data, &ccm_n, &keydvt_in);
+        if (result < 0) {
+                dev_err(dev, "Handshake2 failed: cannot derive keys: %d\n",
+                        result);
+                goto error_hs2;
+        }
+        d_printf(2, dev, "KCK:\n");
+        d_dump(2, dev, keydvt_out.kck, sizeof(keydvt_out.kck));
+        d_printf(2, dev, "PTK:\n");
+        d_dump(2, dev, keydvt_out.ptk, sizeof(keydvt_out.ptk));
+
+        /* Compute MIC and verify it */
+        result = wusb_oob_mic(mic, keydvt_out.kck, &ccm_n, &hs[1]);
+        if (result < 0) {
+                dev_err(dev, "Handshake2 failed: cannot compute MIC: %d\n",
+                        result);
+                goto error_hs2;
+        }
+
+        d_printf(2, dev, "MIC:\n");
+        d_dump(2, dev, mic, sizeof(mic));
+        if (memcmp(hs[1].MIC, mic, sizeof(hs[1].MIC))) {
+                dev_err(dev, "Handshake2 failed: MIC mismatch\n");
+                goto error_hs2;
+        }
+
+        /* Send Handshake3 */
+        hs[2].bMessageNumber = 3;
+        hs[2].bStatus = 0;
+        memcpy(hs[2].tTKID, &tkid_le, sizeof(hs[2].tTKID));
+        hs[2].bReserved = 0;
+        memcpy(hs[2].CDID, &wusb_dev->cdid, sizeof(hs[2].CDID));
+        memcpy(hs[2].nonce, hs[0].nonce, sizeof(hs[2].nonce));
+        result = wusb_oob_mic(hs[2].MIC, keydvt_out.kck, &ccm_n, &hs[2]);
+        if (result < 0) {
+                dev_err(dev, "Handshake3 failed: cannot compute MIC: %d\n",
+                        result);
+                goto error_hs2;
+        }
+
+        d_printf(1, dev, "I: sending hs3:\n");
+        hs_printk(2, dev, &hs[2]);
+
+        result = usb_control_msg(
+                usb_dev, usb_sndctrlpipe(usb_dev, 0),
+                USB_REQ_SET_HANDSHAKE,
+                USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
+                3, 0, &hs[2], sizeof(hs[2]), 1000 /* FIXME: arbitrary */);
+        if (result < 0) {
+                dev_err(dev, "Handshake3: request failed: %d\n", result);
+                goto error_hs3;
+        }
+
+        d_printf(1, dev, "I: turning on encryption on host for device\n");
+        d_dump(2, dev, keydvt_out.ptk, sizeof(keydvt_out.ptk));
+        result = wusbhc->set_ptk(wusbhc, wusb_dev->port_idx, tkid,
+                                 keydvt_out.ptk, sizeof(keydvt_out.ptk));
+        if (result < 0)
+                goto error_wusbhc_set_ptk;
+
+        d_printf(1, dev, "I: setting a GTK\n");
+        result = wusb_dev_set_gtk(wusbhc, wusb_dev);
+        if (result < 0) {
+                dev_err(dev, "Set GTK for device: request failed: %d\n",
+                        result);
+                goto error_wusbhc_set_gtk;
+        }
+
+        /* Update the device's address from unauth to auth */
+        if (usb_dev->authenticated == 0) {
+                d_printf(1, dev, "I: updating addres to auth from non-auth\n");
+                result = wusb_dev_update_address(wusbhc, wusb_dev);
+                if (result < 0)
+                        goto error_dev_update_address;
+        }
+        result = 0;
+        d_printf(1, dev, "I: 4way handshke done, device authenticated\n");
+
+error_dev_update_address:
+error_wusbhc_set_gtk:
+error_wusbhc_set_ptk:
+error_hs3:
+error_hs2:
+error_hs1:
+        memset(hs, 0, 3*sizeof(hs[0]));
+        memset(&keydvt_out, 0, sizeof(keydvt_out));
+        memset(&keydvt_in, 0, sizeof(keydvt_in));
+        memset(&ccm_n, 0, sizeof(ccm_n));
+        memset(mic, 0, sizeof(mic));
+        if (result < 0) {
+                /* error path */
+                wusb_dev_set_encryption(usb_dev, 0);
+        }
+error_dev_set_encryption:
+        kfree(hs);
+error_kzalloc:
+        return result;
+}
+
+/*
+ * Once all connected and authenticated devices have received the new
+ * GTK, switch the host to using it.
+ */
+static void wusbhc_gtk_rekey_done_work(struct work_struct *work)
+{
+        struct wusbhc *wusbhc = container_of(work, struct wusbhc, gtk_rekey_done_work);
+        size_t key_size = sizeof(wusbhc->gtk.data);
+
+        mutex_lock(&wusbhc->mutex);
+
+        if (--wusbhc->pending_set_gtks == 0)
+                wusbhc->set_gtk(wusbhc, wusbhc->gtk_tkid, &wusbhc->gtk.descr.bKeyData, key_size);
+
+        mutex_unlock(&wusbhc->mutex);
+}
+
+static void wusbhc_set_gtk_callback(struct urb *urb)
+{
+        struct wusbhc *wusbhc = urb->context;
+
+        queue_work(wusbd, &wusbhc->gtk_rekey_done_work);
+}
+
+/**
+ * wusbhc_gtk_rekey - generate and distribute a new GTK
+ * @wusbhc: the WUSB host controller
+ *
+ * Generate a new GTK and distribute it to all connected and
+ * authenticated devices.  When all devices have the new GTK, the host
+ * starts using it.
+ *
+ * This must be called after every device disconnect (see [WUSB]
+ * section 6.2.11.2).
+ */
+void wusbhc_gtk_rekey(struct wusbhc *wusbhc)
+{
+        static const size_t key_size = sizeof(wusbhc->gtk.data);
+        int p;
+
+        wusbhc_generate_gtk(wusbhc);
+
+        for (p = 0; p < wusbhc->ports_max; p++) {
+                struct wusb_dev *wusb_dev;
+
+                wusb_dev = wusbhc->port[p].wusb_dev;
+                if (!wusb_dev || !wusb_dev->usb_dev | !wusb_dev->usb_dev->authenticated)
+                        continue;
+
+                usb_fill_control_urb(wusb_dev->set_gtk_urb, wusb_dev->usb_dev,
+                                     usb_sndctrlpipe(wusb_dev->usb_dev, 0),
+                                     (void *)wusb_dev->set_gtk_req,
+                                     &wusbhc->gtk.descr, wusbhc->gtk.descr.bLength,
+                                     wusbhc_set_gtk_callback, wusbhc);
+                if (usb_submit_urb(wusb_dev->set_gtk_urb, GFP_KERNEL) == 0)
+                        wusbhc->pending_set_gtks++;
+        }
+        if (wusbhc->pending_set_gtks == 0)
+                wusbhc->set_gtk(wusbhc, wusbhc->gtk_tkid, &wusbhc->gtk.descr.bKeyData, key_size);
+}
diff --git a/drivers/usb/wusbcore/wa-hc.c b/drivers/usb/wusbcore/wa-hc.c
new file mode 100644
index 000000000000..9d04722415bb
--- /dev/null
+++ b/drivers/usb/wusbcore/wa-hc.c
@@ -0,0 +1,95 @@
+/*
+ * Wire Adapter Host Controller Driver
+ * Common items to HWA and DWA based HCDs
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ */
+#include "wusbhc.h"
+#include "wa-hc.h"
+
+/**
+ * Assumes
+ *
+ * wa->usb_dev and wa->usb_iface initialized and refcounted,
+ * wa->wa_descr initialized.
+ */
+int wa_create(struct wahc *wa, struct usb_interface *iface)
+{
+        int result;
+        struct device *dev = &iface->dev;
+
+        result = wa_rpipes_create(wa);
+        if (result < 0)
+                goto error_rpipes_create;
+        /* Fill up Data Transfer EP pointers */
+        wa->dti_epd = &iface->cur_altsetting->endpoint[1].desc;
+        wa->dto_epd = &iface->cur_altsetting->endpoint[2].desc;
+        wa->xfer_result_size = le16_to_cpu(wa->dti_epd->wMaxPacketSize);
+        wa->xfer_result = kmalloc(wa->xfer_result_size, GFP_KERNEL);
+        if (wa->xfer_result == NULL)
+                goto error_xfer_result_alloc;
+        result = wa_nep_create(wa, iface);
+        if (result < 0) {
+                dev_err(dev, "WA-CDS: can't initialize notif endpoint: %d\n",
+                        result);
+                goto error_nep_create;
+        }
+        return 0;
+
+error_nep_create:
+        kfree(wa->xfer_result);
+error_xfer_result_alloc:
+        wa_rpipes_destroy(wa);
+error_rpipes_create:
+        return result;
+}
+EXPORT_SYMBOL_GPL(wa_create);
+
+
+void __wa_destroy(struct wahc *wa)
+{
+        if (wa->dti_urb) {
+                usb_kill_urb(wa->dti_urb);
+                usb_put_urb(wa->dti_urb);
+                usb_kill_urb(wa->buf_in_urb);
+                usb_put_urb(wa->buf_in_urb);
+        }
+        kfree(wa->xfer_result);
+        wa_nep_destroy(wa);
+        wa_rpipes_destroy(wa);
+}
+EXPORT_SYMBOL_GPL(__wa_destroy);
+
+/**
+ * wa_reset_all - reset the WA device
+ * @wa: the WA to be reset
+ *
+ * For HWAs the radio controller and all other PALs are also reset.
+ */
+void wa_reset_all(struct wahc *wa)
+{
+        /* FIXME: assuming HWA. */
+        wusbhc_reset_all(wa->wusb);
+}
+
+MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
+MODULE_DESCRIPTION("Wireless USB Wire Adapter core");
+MODULE_LICENSE("GPL");
diff --git a/drivers/usb/wusbcore/wa-hc.h b/drivers/usb/wusbcore/wa-hc.h
new file mode 100644
index 000000000000..586d350cdb4d
--- /dev/null
+++ b/drivers/usb/wusbcore/wa-hc.h
@@ -0,0 +1,417 @@
+/*
+ * HWA Host Controller Driver
+ * Wire Adapter Control/Data Streaming Iface (WUSB1.0[8])
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * This driver implements a USB Host Controller (struct usb_hcd) for a
+ * Wireless USB Host Controller based on the Wireless USB 1.0
+ * Host-Wire-Adapter specification (in layman terms, a USB-dongle that
+ * implements a Wireless USB host).
+ *
+ * Check out the Design-overview.txt file in the source documentation
+ * for other details on the implementation.
+ *
+ * Main blocks:
+ *
+ *  driver     glue with the driver API, workqueue daemon
+ *
+ *  lc         RC instance life cycle management (create, destroy...)
+ *
+ *  hcd        glue with the USB API Host Controller Interface API.
+ *
+ *  nep        Notification EndPoint managent: collect notifications
+ *             and queue them with the workqueue daemon.
+ *
+ *             Handle notifications as coming from the NEP. Sends them
+ *             off others to their respective modules (eg: connect,
+ *             disconnect and reset go to devconnect).
+ *
+ *  rpipe      Remote Pipe management; rpipe is what we use to write
+ *             to an endpoint on a WUSB device that is connected to a
+ *             HWA RC.
+ *
+ *  xfer       Transfer managment -- this is all the code that gets a
+ *             buffer and pushes it to a device (or viceversa). *
+ *
+ * Some day a lot of this code will be shared between this driver and
+ * the drivers for DWA (xfer, rpipe).
+ *
+ * All starts at driver.c:hwahc_probe(), when one of this guys is
+ * connected. hwahc_disconnect() stops it.
+ *
+ * During operation, the main driver is devices connecting or
+ * disconnecting. They cause the HWA RC to send notifications into
+ * nep.c:hwahc_nep_cb() that will dispatch them to
+ * notif.c:wa_notif_dispatch(). From there they will fan to cause
+ * device connects, disconnects, etc.
+ *
+ * Note much of the activity is difficult to follow. For example a
+ * device connect goes to devconnect, which will cause the "fake" root
+ * hub port to show a connect and stop there. Then khubd will notice
+ * and call into the rh.c:hwahc_rc_port_reset() code to authenticate
+ * the device (and this might require user intervention) and enable
+ * the port.
+ *
+ * We also have a timer workqueue going from devconnect.c that
+ * schedules in hwahc_devconnect_create().
+ *
+ * The rest of the traffic is in the usual entry points of a USB HCD,
+ * which are hooked up in driver.c:hwahc_rc_driver, and defined in
+ * hcd.c.
+ */
+
+#ifndef __HWAHC_INTERNAL_H__
+#define __HWAHC_INTERNAL_H__
+
+#include <linux/completion.h>
+#include <linux/usb.h>
+#include <linux/mutex.h>
+#include <linux/spinlock.h>
+#include <linux/uwb.h>
+#include <linux/usb/wusb.h>
+#include <linux/usb/wusb-wa.h>
+
+struct wusbhc;
+struct wahc;
+extern void wa_urb_enqueue_run(struct work_struct *ws);
+
+/**
+ * RPipe instance
+ *
+ * @descr's fields are kept in LE, as we need to send it back and
+ * forth.
+ *
+ * @wa is referenced when set
+ *
+ * @segs_available is the number of requests segments that still can
+ *                 be submitted to the controller without overloading
+ *                 it. It is initialized to descr->wRequests when
+ *                 aiming.
+ *
+ * A rpipe supports a max of descr->wRequests at the same time; before
+ * submitting seg_lock has to be taken. If segs_avail > 0, then we can
+ * submit; if not, we have to queue them.
+ */
+struct wa_rpipe {
+        struct kref refcnt;
+        struct usb_rpipe_descriptor descr;
+        struct usb_host_endpoint *ep;
+        struct wahc *wa;
+        spinlock_t seg_lock;
+        struct list_head seg_list;
+        atomic_t segs_available;
+        u8 buffer[1];   /* For reads/writes on USB */
+};
+
+
+/**
+ * Instance of a HWA Host Controller
+ *
+ * Except where a more specific lock/mutex applies or atomic, all
+ * fields protected by @mutex.
+ *
+ * @wa_descr  Can be accessed without locking because it is in
+ *            the same area where the device descriptors were
+ *            read, so it is guaranteed to exist umodified while
+ *            the device exists.
+ *
+ *            Endianess has been converted to CPU's.
+ *
+ * @nep_* can be accessed without locking as its processing is
+ *        serialized; we submit a NEP URB and it comes to
+ *        hwahc_nep_cb(), which won't issue another URB until it is
+ *        done processing it.
+ *
+ * @xfer_list:
+ *
+ *   List of active transfers to verify existence from a xfer id
+ *   gotten from the xfer result message. Can't use urb->list because
+ *   it goes by endpoint, and we don't know the endpoint at the time
+ *   when we get the xfer result message. We can't really rely on the
+ *   pointer (will have to change for 64 bits) as the xfer id is 32 bits.
+ *
+ * @xfer_delayed_list:   List of transfers that need to be started
+ *                       (with a workqueue, because they were
+ *                       submitted from an atomic context).
+ *
+ * FIXME: this needs to be layered up: a wusbhc layer (for sharing
+ *        comonalities with WHCI), a wa layer (for sharing
+ *        comonalities with DWA-RC).
+ */
+struct wahc {
+        struct usb_device *usb_dev;
+        struct usb_interface *usb_iface;
+
+        /* HC to deliver notifications */
+        union {
+                struct wusbhc *wusb;
+                struct dwahc *dwa;
+        };
+
+        const struct usb_endpoint_descriptor *dto_epd, *dti_epd;
+        const struct usb_wa_descriptor *wa_descr;
+
+        struct urb *nep_urb;            /* Notification EndPoint [lockless] */
+        struct edc nep_edc;
+        void *nep_buffer;
+        size_t nep_buffer_size;
+
+        atomic_t notifs_queued;
+
+        u16 rpipes;
+        unsigned long *rpipe_bm;        /* rpipe usage bitmap */
+        spinlock_t rpipe_bm_lock;       /* protect rpipe_bm */
+        struct mutex rpipe_mutex;       /* assigning resources to endpoints */
+
+        struct urb *dti_urb;            /* URB for reading xfer results */
+        struct urb *buf_in_urb;         /* URB for reading data in */
+        struct edc dti_edc;             /* DTI error density counter */
+        struct wa_xfer_result *xfer_result; /* real size = dti_ep maxpktsize */
+        size_t xfer_result_size;
+
+        s32 status;                     /* For reading status */
+
+        struct list_head xfer_list;
+        struct list_head xfer_delayed_list;
+        spinlock_t xfer_list_lock;
+        struct work_struct xfer_work;
+        atomic_t xfer_id_count;
+};
+
+
+extern int wa_create(struct wahc *wa, struct usb_interface *iface);
+extern void __wa_destroy(struct wahc *wa);
+void wa_reset_all(struct wahc *wa);
+
+
+/* Miscellaneous constants */
+enum {
+        /** Max number of EPROTO errors we tolerate on the NEP in a
+         * period of time */
+        HWAHC_EPROTO_MAX = 16,
+        /** Period of time for EPROTO errors (in jiffies) */
+        HWAHC_EPROTO_PERIOD = 4 * HZ,
+};
+
+
+/* Notification endpoint handling */
+extern int wa_nep_create(struct wahc *, struct usb_interface *);
+extern void wa_nep_destroy(struct wahc *);
+
+static inline int wa_nep_arm(struct wahc *wa, gfp_t gfp_mask)
+{
+        struct urb *urb = wa->nep_urb;
+        urb->transfer_buffer = wa->nep_buffer;
+        urb->transfer_buffer_length = wa->nep_buffer_size;
+        return usb_submit_urb(urb, gfp_mask);
+}
+
+static inline void wa_nep_disarm(struct wahc *wa)
+{
+        usb_kill_urb(wa->nep_urb);
+}
+
+
+/* RPipes */
+static inline void wa_rpipe_init(struct wahc *wa)
+{
+        spin_lock_init(&wa->rpipe_bm_lock);
+        mutex_init(&wa->rpipe_mutex);
+}
+
+static inline void wa_init(struct wahc *wa)
+{
+        edc_init(&wa->nep_edc);
+        atomic_set(&wa->notifs_queued, 0);
+        wa_rpipe_init(wa);
+        edc_init(&wa->dti_edc);
+        INIT_LIST_HEAD(&wa->xfer_list);
+        INIT_LIST_HEAD(&wa->xfer_delayed_list);
+        spin_lock_init(&wa->xfer_list_lock);
+        INIT_WORK(&wa->xfer_work, wa_urb_enqueue_run);
+        atomic_set(&wa->xfer_id_count, 1);
+}
+
+/**
+ * Destroy a pipe (when refcount drops to zero)
+ *
+ * Assumes it has been moved to the "QUIESCING" state.
+ */
+struct wa_xfer;
+extern void rpipe_destroy(struct kref *_rpipe);
+static inline
+void __rpipe_get(struct wa_rpipe *rpipe)
+{
+        kref_get(&rpipe->refcnt);
+}
+extern int rpipe_get_by_ep(struct wahc *, struct usb_host_endpoint *,
+                           struct urb *, gfp_t);
+static inline void rpipe_put(struct wa_rpipe *rpipe)
+{
+        kref_put(&rpipe->refcnt, rpipe_destroy);
+
+}
+extern void rpipe_ep_disable(struct wahc *, struct usb_host_endpoint *);
+extern int wa_rpipes_create(struct wahc *);
+extern void wa_rpipes_destroy(struct wahc *);
+static inline void rpipe_avail_dec(struct wa_rpipe *rpipe)
+{
+        atomic_dec(&rpipe->segs_available);
+}
+
+/**
+ * Returns true if the rpipe is ready to submit more segments.
+ */
+static inline int rpipe_avail_inc(struct wa_rpipe *rpipe)
+{
+        return atomic_inc_return(&rpipe->segs_available) > 0
+                && !list_empty(&rpipe->seg_list);
+}
+
+
+/* Transferring data */
+extern int wa_urb_enqueue(struct wahc *, struct usb_host_endpoint *,
+                          struct urb *, gfp_t);
+extern int wa_urb_dequeue(struct wahc *, struct urb *);
+extern void wa_handle_notif_xfer(struct wahc *, struct wa_notif_hdr *);
+
+
+/* Misc
+ *
+ * FIXME: Refcounting for the actual @hwahc object is not correct; I
+ *        mean, this should be refcounting on the HCD underneath, but
+ *        it is not. In any case, the semantics for HCD refcounting
+ *        are *weird*...on refcount reaching zero it just frees
+ *        it...no RC specific function is called...unless I miss
+ *        something.
+ *
+ * FIXME: has to go away in favour of an 'struct' hcd based sollution
+ */
+static inline struct wahc *wa_get(struct wahc *wa)
+{
+        usb_get_intf(wa->usb_iface);
+        return wa;
+}
+
+static inline void wa_put(struct wahc *wa)
+{
+        usb_put_intf(wa->usb_iface);
+}
+
+
+static inline int __wa_feature(struct wahc *wa, unsigned op, u16 feature)
+{
+        return usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
+                        op ? USB_REQ_SET_FEATURE : USB_REQ_CLEAR_FEATURE,
+                        USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+                        feature,
+                        wa->usb_iface->cur_altsetting->desc.bInterfaceNumber,
+                        NULL, 0, 1000 /* FIXME: arbitrary */);
+}
+
+
+static inline int __wa_set_feature(struct wahc *wa, u16 feature)
+{
+        return  __wa_feature(wa, 1, feature);
+}
+
+
+static inline int __wa_clear_feature(struct wahc *wa, u16 feature)
+{
+        return __wa_feature(wa, 0, feature);
+}
+
+
+/**
+ * Return the status of a Wire Adapter
+ *
+ * @wa:         Wire Adapter instance
+ * @returns     < 0 errno code on error, or status bitmap as described
+ *              in WUSB1.0[8.3.1.6].
+ *
+ * NOTE: need malloc, some arches don't take USB from the stack
+ */
+static inline
+s32 __wa_get_status(struct wahc *wa)
+{
+        s32 result;
+        result = usb_control_msg(
+                wa->usb_dev, usb_rcvctrlpipe(wa->usb_dev, 0),
+                USB_REQ_GET_STATUS,
+                USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+                0, wa->usb_iface->cur_altsetting->desc.bInterfaceNumber,
+                &wa->status, sizeof(wa->status),
+                1000 /* FIXME: arbitrary */);
+        if (result >= 0)
+                result = wa->status;
+        return result;
+}
+
+
+/**
+ * Waits until the Wire Adapter's status matches @mask/@value
+ *
+ * @wa:         Wire Adapter instance.
+ * @returns     < 0 errno code on error, otherwise status.
+ *
+ * Loop until the WAs status matches the mask and value (status & mask
+ * == value). Timeout if it doesn't happen.
+ *
+ * FIXME: is there an official specification on how long status
+ *        changes can take?
+ */
+static inline s32 __wa_wait_status(struct wahc *wa, u32 mask, u32 value)
+{
+        s32 result;
+        unsigned loops = 10;
+        do {
+                msleep(50);
+                result = __wa_get_status(wa);
+                if ((result & mask) == value)
+                        break;
+                if (loops-- == 0) {
+                        result = -ETIMEDOUT;
+                        break;
+                }
+        } while (result >= 0);
+        return result;
+}
+
+
+/** Command @hwahc to stop, @returns 0 if ok, < 0 errno code on error */
+static inline int __wa_stop(struct wahc *wa)
+{
+        int result;
+        struct device *dev = &wa->usb_iface->dev;
+
+        result = __wa_clear_feature(wa, WA_ENABLE);
+        if (result < 0 && result != -ENODEV) {
+                dev_err(dev, "error commanding HC to stop: %d\n", result);
+                goto out;
+        }
+        result = __wa_wait_status(wa, WA_ENABLE, 0);
+        if (result < 0 && result != -ENODEV)
+                dev_err(dev, "error waiting for HC to stop: %d\n", result);
+out:
+        return 0;
+}
+
+
+#endif /* #ifndef __HWAHC_INTERNAL_H__ */
diff --git a/drivers/usb/wusbcore/wa-nep.c b/drivers/usb/wusbcore/wa-nep.c
new file mode 100644
index 000000000000..3f542990c73f
--- /dev/null
+++ b/drivers/usb/wusbcore/wa-nep.c
@@ -0,0 +1,310 @@
+/*
+ * WUSB Wire Adapter: Control/Data Streaming Interface (WUSB[8])
+ * Notification EndPoint support
+ *
+ * Copyright (C) 2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * This part takes care of getting the notification from the hw
+ * only and dispatching through wusbwad into
+ * wa_notif_dispatch. Handling is done there.
+ *
+ * WA notifications are limited in size; most of them are three or
+ * four bytes long, and the longest is the HWA Device Notification,
+ * which would not exceed 38 bytes (DNs are limited in payload to 32
+ * bytes plus 3 bytes header (WUSB1.0[7.6p2]), plus 3 bytes HWA
+ * header (WUSB1.0[8.5.4.2]).
+ *
+ * It is not clear if more than one Device Notification can be packed
+ * in a HWA Notification, I assume no because of the wording in
+ * WUSB1.0[8.5.4.2]. In any case, the bigger any notification could
+ * get is 256 bytes (as the bLength field is a byte).
+ *
+ * So what we do is we have this buffer and read into it; when a
+ * notification arrives we schedule work to a specific, single thread
+ * workqueue (so notifications are serialized) and copy the
+ * notification data. After scheduling the work, we rearm the read from
+ * the notification endpoint.
+ *
+ * Entry points here are:
+ *
+ * wa_nep_[create|destroy]()   To initialize/release this subsystem
+ *
+ * wa_nep_cb()                 Callback for the notification
+ *                                endpoint; when data is ready, this
+ *                                does the dispatching.
+ */
+#include <linux/workqueue.h>
+#include <linux/ctype.h>
+#include <linux/uwb/debug.h>
+#include "wa-hc.h"
+#include "wusbhc.h"
+
+/* Structure for queueing notifications to the workqueue */
+struct wa_notif_work {
+        struct work_struct work;
+        struct wahc *wa;
+        size_t size;
+        u8 data[];
+};
+
+/*
+ * Process incoming notifications from the WA's Notification EndPoint
+ * [the wuswad daemon, basically]
+ *
+ * @_nw:        Pointer to a descriptor which has the pointer to the
+ *              @wa, the size of the buffer and the work queue
+ *              structure (so we can free all when done).
+ * @returns     0 if ok, < 0 errno code on error.
+ *
+ * All notifications follow the same format; they need to start with a
+ * 'struct wa_notif_hdr' header, so it is easy to parse through
+ * them. We just break the buffer in individual notifications (the
+ * standard doesn't say if it can be done or is forbidden, so we are
+ * cautious) and dispatch each.
+ *
+ * So the handling layers are is:
+ *
+ *   WA specific notification (from NEP)
+ *      Device Notification Received -> wa_handle_notif_dn()
+ *        WUSB Device notification generic handling
+ *      BPST Adjustment -> wa_handle_notif_bpst_adj()
+ *      ... -> ...
+ *
+ * @wa has to be referenced
+ */
+static void wa_notif_dispatch(struct work_struct *ws)
+{
+        void *itr;
+        u8 missing = 0;
+        struct wa_notif_work *nw = container_of(ws, struct wa_notif_work, work);
+        struct wahc *wa = nw->wa;
+        struct wa_notif_hdr *notif_hdr;
+        size_t size;
+
+        struct device *dev = &wa->usb_iface->dev;
+
+#if 0
+        /* FIXME: need to check for this??? */
+        if (usb_hcd->state == HC_STATE_QUIESCING)       /* Going down? */
+                goto out;                               /* screw it */
+#endif
+        atomic_dec(&wa->notifs_queued);         /* Throttling ctl */
+        dev = &wa->usb_iface->dev;
+        size = nw->size;
+        itr = nw->data;
+
+        while (size) {
+                if (size < sizeof(*notif_hdr)) {
+                        missing = sizeof(*notif_hdr) - size;
+                        goto exhausted_buffer;
+                }
+                notif_hdr = itr;
+                if (size < notif_hdr->bLength)
+                        goto exhausted_buffer;
+                itr += notif_hdr->bLength;
+                size -= notif_hdr->bLength;
+                /* Dispatch the notification [don't use itr or size!] */
+                switch (notif_hdr->bNotifyType) {
+                case HWA_NOTIF_DN: {
+                        struct hwa_notif_dn *hwa_dn;
+                        hwa_dn = container_of(notif_hdr, struct hwa_notif_dn,
+                                              hdr);
+                        wusbhc_handle_dn(wa->wusb, hwa_dn->bSourceDeviceAddr,
+                                         hwa_dn->dndata,
+                                         notif_hdr->bLength - sizeof(*hwa_dn));
+                        break;
+                }
+                case WA_NOTIF_TRANSFER:
+                        wa_handle_notif_xfer(wa, notif_hdr);
+                        break;
+                case DWA_NOTIF_RWAKE:
+                case DWA_NOTIF_PORTSTATUS:
+                case HWA_NOTIF_BPST_ADJ:
+                        /* FIXME: unimplemented WA NOTIFs */
+                        /* fallthru */
+                default:
+                        if (printk_ratelimit()) {
+                                dev_err(dev, "HWA: unknown notification 0x%x, "
+                                        "%zu bytes; discarding\n",
+                                        notif_hdr->bNotifyType,
+                                        (size_t)notif_hdr->bLength);
+                                dump_bytes(dev, notif_hdr, 16);
+                        }
+                        break;
+                }
+        }
+out:
+        wa_put(wa);
+        kfree(nw);
+        return;
+
+        /* THIS SHOULD NOT HAPPEN
+         *
+         * Buffer exahusted with partial data remaining; just warn and
+         * discard the data, as this should not happen.
+         */
+exhausted_buffer:
+        if (!printk_ratelimit())
+                goto out;
+        dev_warn(dev, "HWA: device sent short notification, "
+                 "%d bytes missing; discarding %d bytes.\n",
+                 missing, (int)size);
+        dump_bytes(dev, itr, size);
+        goto out;
+}
+
+/*
+ * Deliver incoming WA notifications to the wusbwa workqueue
+ *
+ * @wa: Pointer the Wire Adapter Controller Data Streaming
+ *              instance (part of an 'struct usb_hcd').
+ * @size:       Size of the received buffer
+ * @returns     0 if ok, < 0 errno code on error.
+ *
+ * The input buffer is @wa->nep_buffer, with @size bytes
+ * (guaranteed to fit in the allocated space,
+ * @wa->nep_buffer_size).
+ */
+static int wa_nep_queue(struct wahc *wa, size_t size)
+{
+        int result = 0;
+        struct device *dev = &wa->usb_iface->dev;
+        struct wa_notif_work *nw;
+
+        /* dev_fnstart(dev, "(wa %p, size %zu)\n", wa, size); */
+        BUG_ON(size > wa->nep_buffer_size);
+        if (size == 0)
+                goto out;
+        if (atomic_read(&wa->notifs_queued) > 200) {
+                if (printk_ratelimit())
+                        dev_err(dev, "Too many notifications queued, "
+                                "throttling back\n");
+                goto out;
+        }
+        nw = kzalloc(sizeof(*nw) + size, GFP_ATOMIC);
+        if (nw == NULL) {
+                if (printk_ratelimit())
+                        dev_err(dev, "No memory to queue notification\n");
+                goto out;
+        }
+        INIT_WORK(&nw->work, wa_notif_dispatch);
+        nw->wa = wa_get(wa);
+        nw->size = size;
+        memcpy(nw->data, wa->nep_buffer, size);
+        atomic_inc(&wa->notifs_queued);         /* Throttling ctl */
+        queue_work(wusbd, &nw->work);
+out:
+        /* dev_fnend(dev, "(wa %p, size %zu) = result\n", wa, size, result); */
+        return result;
+}
+
+/*
+ * Callback for the notification event endpoint
+ *
+ * Check's that everything is fine and then passes the data to be
+ * queued to the workqueue.
+ */
+static void wa_nep_cb(struct urb *urb)
+{
+        int result;
+        struct wahc *wa = urb->context;
+        struct device *dev = &wa->usb_iface->dev;
+
+        switch (result = urb->status) {
+        case 0:
+                result = wa_nep_queue(wa, urb->actual_length);
+                if (result < 0)
+                        dev_err(dev, "NEP: unable to process notification(s): "
+                                "%d\n", result);
+                break;
+        case -ECONNRESET:       /* Not an error, but a controlled situation; */
+        case -ENOENT:           /* (we killed the URB)...so, no broadcast */
+        case -ESHUTDOWN:
+                dev_dbg(dev, "NEP: going down %d\n", urb->status);
+                goto out;
+        default:        /* On general errors, we retry unless it gets ugly */
+                if (edc_inc(&wa->nep_edc, EDC_MAX_ERRORS,
+                            EDC_ERROR_TIMEFRAME)) {
+                        dev_err(dev, "NEP: URB max acceptable errors "
+                                "exceeded, resetting device\n");
+                        wa_reset_all(wa);
+                        goto out;
+                }
+                dev_err(dev, "NEP: URB error %d\n", urb->status);
+        }
+        result = wa_nep_arm(wa, GFP_ATOMIC);
+        if (result < 0) {
+                dev_err(dev, "NEP: cannot submit URB: %d\n", result);
+                wa_reset_all(wa);
+        }
+out:
+        return;
+}
+
+/*
+ * Initialize @wa's notification and event's endpoint stuff
+ *
+ * This includes the allocating the read buffer, the context ID
+ * allocation bitmap, the URB and submitting the URB.
+ */
+int wa_nep_create(struct wahc *wa, struct usb_interface *iface)
+{
+        int result;
+        struct usb_endpoint_descriptor *epd;
+        struct usb_device *usb_dev = interface_to_usbdev(iface);
+        struct device *dev = &iface->dev;
+
+        edc_init(&wa->nep_edc);
+        epd = &iface->cur_altsetting->endpoint[0].desc;
+        wa->nep_buffer_size = 1024;
+        wa->nep_buffer = kmalloc(wa->nep_buffer_size, GFP_KERNEL);
+        if (wa->nep_buffer == NULL) {
+                dev_err(dev, "Unable to allocate notification's read buffer\n");
+                goto error_nep_buffer;
+        }
+        wa->nep_urb = usb_alloc_urb(0, GFP_KERNEL);
+        if (wa->nep_urb == NULL) {
+                dev_err(dev, "Unable to allocate notification URB\n");
+                goto error_urb_alloc;
+        }
+        usb_fill_int_urb(wa->nep_urb, usb_dev,
+                         usb_rcvintpipe(usb_dev, epd->bEndpointAddress),
+                         wa->nep_buffer, wa->nep_buffer_size,
+                         wa_nep_cb, wa, epd->bInterval);
+        result = wa_nep_arm(wa, GFP_KERNEL);
+        if (result < 0) {
+                dev_err(dev, "Cannot submit notification URB: %d\n", result);
+                goto error_nep_arm;
+        }
+        return 0;
+
+error_nep_arm:
+        usb_free_urb(wa->nep_urb);
+error_urb_alloc:
+        kfree(wa->nep_buffer);
+error_nep_buffer:
+        return -ENOMEM;
+}
+
+void wa_nep_destroy(struct wahc *wa)
+{
+        wa_nep_disarm(wa);
+        usb_free_urb(wa->nep_urb);
+        kfree(wa->nep_buffer);
+}
diff --git a/drivers/usb/wusbcore/wa-rpipe.c b/drivers/usb/wusbcore/wa-rpipe.c
new file mode 100644
index 000000000000..f18e4aae66e9
--- /dev/null
+++ b/drivers/usb/wusbcore/wa-rpipe.c
@@ -0,0 +1,562 @@
+/*
+ * WUSB Wire Adapter
+ * rpipe management
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ *
+ * RPIPE
+ *
+ *   Targetted at different downstream endpoints
+ *
+ *   Descriptor: use to config the remote pipe.
+ *
+ *   The number of blocks could be dynamic (wBlocks in descriptor is
+ *   0)--need to schedule them then.
+ *
+ * Each bit in wa->rpipe_bm represents if an rpipe is being used or
+ * not. Rpipes are represented with a 'struct wa_rpipe' that is
+ * attached to the hcpriv member of a 'struct usb_host_endpoint'.
+ *
+ * When you need to xfer data to an endpoint, you get an rpipe for it
+ * with wa_ep_rpipe_get(), which gives you a reference to the rpipe
+ * and keeps a single one (the first one) with the endpoint. When you
+ * are done transferring, you drop that reference. At the end the
+ * rpipe is always allocated and bound to the endpoint. There it might
+ * be recycled when not used.
+ *
+ * Addresses:
+ *
+ *  We use a 1:1 mapping mechanism between port address (0 based
+ *  index, actually) and the address. The USB stack knows about this.
+ *
+ *  USB Stack port number    4 (1 based)
+ *  WUSB code port index     3 (0 based)
+ *  USB Addresss             5 (2 based -- 0 is for default, 1 for root hub)
+ *
+ *  Now, because we don't use the concept as default address exactly
+ *  like the (wired) USB code does, we need to kind of skip it. So we
+ *  never take addresses from the urb->pipe, but from the
+ *  urb->dev->devnum, to make sure that we always have the right
+ *  destination address.
+ */
+#include <linux/init.h>
+#include <asm/atomic.h>
+#include <linux/bitmap.h>
+#include "wusbhc.h"
+#include "wa-hc.h"
+
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+
+static int __rpipe_get_descr(struct wahc *wa,
+                             struct usb_rpipe_descriptor *descr, u16 index)
+{
+        ssize_t result;
+        struct device *dev = &wa->usb_iface->dev;
+
+        /* Get the RPIPE descriptor -- we cannot use the usb_get_descriptor()
+         * function because the arguments are different.
+         */
+        d_printf(1, dev, "rpipe %u: get descr\n", index);
+        result = usb_control_msg(
+                wa->usb_dev, usb_rcvctrlpipe(wa->usb_dev, 0),
+                USB_REQ_GET_DESCRIPTOR,
+                USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_RPIPE,
+                USB_DT_RPIPE<<8, index, descr, sizeof(*descr),
+                1000 /* FIXME: arbitrary */);
+        if (result < 0) {
+                dev_err(dev, "rpipe %u: get descriptor failed: %d\n",
+                        index, (int)result);
+                goto error;
+        }
+        if (result < sizeof(*descr)) {
+                dev_err(dev, "rpipe %u: got short descriptor "
+                        "(%zd vs %zd bytes needed)\n",
+                        index, result, sizeof(*descr));
+                result = -EINVAL;
+                goto error;
+        }
+        result = 0;
+
+error:
+        return result;
+}
+
+/*
+ *
+ * The descriptor is assumed to be properly initialized (ie: you got
+ * it through __rpipe_get_descr()).
+ */
+static int __rpipe_set_descr(struct wahc *wa,
+                             struct usb_rpipe_descriptor *descr, u16 index)
+{
+        ssize_t result;
+        struct device *dev = &wa->usb_iface->dev;
+
+        /* we cannot use the usb_get_descriptor() function because the
+         * arguments are different.
+         */
+        d_printf(1, dev, "rpipe %u: set descr\n", index);
+        result = usb_control_msg(
+                wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
+                USB_REQ_SET_DESCRIPTOR,
+                USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_RPIPE,
+                USB_DT_RPIPE<<8, index, descr, sizeof(*descr),
+                HZ / 10);
+        if (result < 0) {
+                dev_err(dev, "rpipe %u: set descriptor failed: %d\n",
+                        index, (int)result);
+                goto error;
+        }
+        if (result < sizeof(*descr)) {
+                dev_err(dev, "rpipe %u: sent short descriptor "
+                        "(%zd vs %zd bytes required)\n",
+                        index, result, sizeof(*descr));
+                result = -EINVAL;
+                goto error;
+        }
+        result = 0;
+
+error:
+        return result;
+
+}
+
+static void rpipe_init(struct wa_rpipe *rpipe)
+{
+        kref_init(&rpipe->refcnt);
+        spin_lock_init(&rpipe->seg_lock);
+        INIT_LIST_HEAD(&rpipe->seg_list);
+}
+
+static unsigned rpipe_get_idx(struct wahc *wa, unsigned rpipe_idx)
+{
+        unsigned long flags;
+
+        spin_lock_irqsave(&wa->rpipe_bm_lock, flags);
+        rpipe_idx = find_next_zero_bit(wa->rpipe_bm, wa->rpipes, rpipe_idx);
+        if (rpipe_idx < wa->rpipes)
+                set_bit(rpipe_idx, wa->rpipe_bm);
+        spin_unlock_irqrestore(&wa->rpipe_bm_lock, flags);
+
+        return rpipe_idx;
+}
+
+static void rpipe_put_idx(struct wahc *wa, unsigned rpipe_idx)
+{
+        unsigned long flags;
+
+        spin_lock_irqsave(&wa->rpipe_bm_lock, flags);
+        clear_bit(rpipe_idx, wa->rpipe_bm);
+        spin_unlock_irqrestore(&wa->rpipe_bm_lock, flags);
+}
+
+void rpipe_destroy(struct kref *_rpipe)
+{
+        struct wa_rpipe *rpipe = container_of(_rpipe, struct wa_rpipe, refcnt);
+        u8 index = le16_to_cpu(rpipe->descr.wRPipeIndex);
+        d_fnstart(1, NULL, "(rpipe %p %u)\n", rpipe, index);
+        if (rpipe->ep)
+                rpipe->ep->hcpriv = NULL;
+        rpipe_put_idx(rpipe->wa, index);
+        wa_put(rpipe->wa);
+        kfree(rpipe);
+        d_fnend(1, NULL, "(rpipe %p %u)\n", rpipe, index);
+}
+EXPORT_SYMBOL_GPL(rpipe_destroy);
+
+/*
+ * Locate an idle rpipe, create an structure for it and return it
+ *
+ * @wa    is referenced and unlocked
+ * @crs   enum rpipe_attr, required endpoint characteristics
+ *
+ * The rpipe can be used only sequentially (not in parallel).
+ *
+ * The rpipe is moved into the "ready" state.
+ */
+static int rpipe_get_idle(struct wa_rpipe **prpipe, struct wahc *wa, u8 crs,
+                          gfp_t gfp)
+{
+        int result;
+        unsigned rpipe_idx;
+        struct wa_rpipe *rpipe;
+        struct device *dev = &wa->usb_iface->dev;
+
+        d_fnstart(3, dev, "(wa %p crs 0x%02x)\n", wa, crs);
+        rpipe = kzalloc(sizeof(*rpipe), gfp);
+        if (rpipe == NULL)
+                return -ENOMEM;
+        rpipe_init(rpipe);
+
+        /* Look for an idle pipe */
+        for (rpipe_idx = 0; rpipe_idx < wa->rpipes; rpipe_idx++) {
+                rpipe_idx = rpipe_get_idx(wa, rpipe_idx);
+                if (rpipe_idx >= wa->rpipes)    /* no more pipes :( */
+                        break;
+                result =  __rpipe_get_descr(wa, &rpipe->descr, rpipe_idx);
+                if (result < 0)
+                        dev_err(dev, "Can't get descriptor for rpipe %u: %d\n",
+                                rpipe_idx, result);
+                else if ((rpipe->descr.bmCharacteristics & crs) != 0)
+                        goto found;
+                rpipe_put_idx(wa, rpipe_idx);
+        }
+        *prpipe = NULL;
+        kfree(rpipe);
+        d_fnend(3, dev, "(wa %p crs 0x%02x) = -ENXIO\n", wa, crs);
+        return -ENXIO;
+
+found:
+        set_bit(rpipe_idx, wa->rpipe_bm);
+        rpipe->wa = wa_get(wa);
+        *prpipe = rpipe;
+        d_fnstart(3, dev, "(wa %p crs 0x%02x) = 0\n", wa, crs);
+        return 0;
+}
+
+static int __rpipe_reset(struct wahc *wa, unsigned index)
+{
+        int result;
+        struct device *dev = &wa->usb_iface->dev;
+
+        d_printf(1, dev, "rpipe %u: reset\n", index);
+        result = usb_control_msg(
+                wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
+                USB_REQ_RPIPE_RESET,
+                USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_RPIPE,
+                0, index, NULL, 0, 1000 /* FIXME: arbitrary */);
+        if (result < 0)
+                dev_err(dev, "rpipe %u: reset failed: %d\n",
+                        index, result);
+        return result;
+}
+
+/*
+ * Fake companion descriptor for ep0
+ *
+ * See WUSB1.0[7.4.4], most of this is zero for bulk/int/ctl
+ */
+static struct usb_wireless_ep_comp_descriptor epc0 = {
+        .bLength = sizeof(epc0),
+        .bDescriptorType = USB_DT_WIRELESS_ENDPOINT_COMP,
+/*      .bMaxBurst = 1, */
+        .bMaxSequence = 31,
+};
+
+/*
+ * Look for EP companion descriptor
+ *
+ * Get there, look for Inara in the endpoint's extra descriptors
+ */
+static struct usb_wireless_ep_comp_descriptor *rpipe_epc_find(
+                struct device *dev, struct usb_host_endpoint *ep)
+{
+        void *itr;
+        size_t itr_size;
+        struct usb_descriptor_header *hdr;
+        struct usb_wireless_ep_comp_descriptor *epcd;
+
+        d_fnstart(3, dev, "(ep %p)\n", ep);
+        if (ep->desc.bEndpointAddress == 0) {
+                epcd = &epc0;
+                goto out;
+        }
+        itr = ep->extra;
+        itr_size = ep->extralen;
+        epcd = NULL;
+        while (itr_size > 0) {
+                if (itr_size < sizeof(*hdr)) {
+                        dev_err(dev, "HW Bug? ep 0x%02x: extra descriptors "
+                                "at offset %zu: only %zu bytes left\n",
+                                ep->desc.bEndpointAddress,
+                                itr - (void *) ep->extra, itr_size);
+                        break;
+                }
+                hdr = itr;
+                if (hdr->bDescriptorType == USB_DT_WIRELESS_ENDPOINT_COMP) {
+                        epcd = itr;
+                        break;
+                }
+                if (hdr->bLength > itr_size) {
+                        dev_err(dev, "HW Bug? ep 0x%02x: extra descriptor "
+                                "at offset %zu (type 0x%02x) "
+                                "length %d but only %zu bytes left\n",
+                                ep->desc.bEndpointAddress,
+                                itr - (void *) ep->extra, hdr->bDescriptorType,
+                                hdr->bLength, itr_size);
+                        break;
+                }
+                itr += hdr->bLength;
+                itr_size -= hdr->bDescriptorType;
+        }
+out:
+        d_fnend(3, dev, "(ep %p) = %p\n", ep, epcd);
+        return epcd;
+}
+
+/*
+ * Aim an rpipe to its device & endpoint destination
+ *
+ * Make sure we change the address to unauthenticathed if the device
+ * is WUSB and it is not authenticated.
+ */
+static int rpipe_aim(struct wa_rpipe *rpipe, struct wahc *wa,
+                     struct usb_host_endpoint *ep, struct urb *urb, gfp_t gfp)
+{
+        int result = -ENOMSG;   /* better code for lack of companion? */
+        struct device *dev = &wa->usb_iface->dev;
+        struct usb_device *usb_dev = urb->dev;
+        struct usb_wireless_ep_comp_descriptor *epcd;
+        u8 unauth;
+
+        d_fnstart(3, dev, "(rpipe %p wa %p ep %p, urb %p)\n",
+                    rpipe, wa, ep, urb);
+        epcd = rpipe_epc_find(dev, ep);
+        if (epcd == NULL) {
+                dev_err(dev, "ep 0x%02x: can't find companion descriptor\n",
+                        ep->desc.bEndpointAddress);
+                goto error;
+        }
+        unauth = usb_dev->wusb && !usb_dev->authenticated ? 0x80 : 0;
+        __rpipe_reset(wa, le16_to_cpu(rpipe->descr.wRPipeIndex));
+        atomic_set(&rpipe->segs_available, le16_to_cpu(rpipe->descr.wRequests));
+        /* FIXME: block allocation system; request with queuing and timeout */
+        /* FIXME: compute so seg_size > ep->maxpktsize */
+        rpipe->descr.wBlocks = cpu_to_le16(16);         /* given */
+        /* ep0 maxpktsize is 0x200 (WUSB1.0[4.8.1]) */
+        rpipe->descr.wMaxPacketSize = cpu_to_le16(ep->desc.wMaxPacketSize);
+        rpipe->descr.bHSHubAddress = 0;                 /* reserved: zero */
+        rpipe->descr.bHSHubPort = wusb_port_no_to_idx(urb->dev->portnum);
+        /* FIXME: use maximum speed as supported or recommended by device */
+        rpipe->descr.bSpeed = usb_pipeendpoint(urb->pipe) == 0 ?
+                UWB_PHY_RATE_53 : UWB_PHY_RATE_200;
+        d_printf(2, dev, "addr %u (0x%02x) rpipe #%u ep# %u speed %d\n",
+                 urb->dev->devnum, urb->dev->devnum | unauth,
+                 le16_to_cpu(rpipe->descr.wRPipeIndex),
+                 usb_pipeendpoint(urb->pipe), rpipe->descr.bSpeed);
+        /* see security.c:wusb_update_address() */
+        if (unlikely(urb->dev->devnum == 0x80))
+                rpipe->descr.bDeviceAddress = 0;
+        else
+                rpipe->descr.bDeviceAddress = urb->dev->devnum | unauth;
+        rpipe->descr.bEndpointAddress = ep->desc.bEndpointAddress;
+        /* FIXME: bDataSequence */
+        rpipe->descr.bDataSequence = 0;
+        /* FIXME: dwCurrentWindow */
+        rpipe->descr.dwCurrentWindow = cpu_to_le32(1);
+        /* FIXME: bMaxDataSequence */
+        rpipe->descr.bMaxDataSequence = epcd->bMaxSequence - 1;
+        rpipe->descr.bInterval = ep->desc.bInterval;
+        /* FIXME: bOverTheAirInterval */
+        rpipe->descr.bOverTheAirInterval = 0;   /* 0 if not isoc */
+        /* FIXME: xmit power & preamble blah blah */
+        rpipe->descr.bmAttribute = ep->desc.bmAttributes & 0x03;
+        /* rpipe->descr.bmCharacteristics RO */
+        /* FIXME: bmRetryOptions */
+        rpipe->descr.bmRetryOptions = 15;
+        /* FIXME: use for assessing link quality? */
+        rpipe->descr.wNumTransactionErrors = 0;
+        result = __rpipe_set_descr(wa, &rpipe->descr,
+                                   le16_to_cpu(rpipe->descr.wRPipeIndex));
+        if (result < 0) {
+                dev_err(dev, "Cannot aim rpipe: %d\n", result);
+                goto error;
+        }
+        result = 0;
+error:
+        d_fnend(3, dev, "(rpipe %p wa %p ep %p urb %p) = %d\n",
+                  rpipe, wa, ep, urb, result);
+        return result;
+}
+
+/*
+ * Check an aimed rpipe to make sure it points to where we want
+ *
+ * We use bit 19 of the Linux USB pipe bitmap for unauth vs auth
+ * space; when it is like that, we or 0x80 to make an unauth address.
+ */
+static int rpipe_check_aim(const struct wa_rpipe *rpipe, const struct wahc *wa,
+                           const struct usb_host_endpoint *ep,
+                           const struct urb *urb, gfp_t gfp)
+{
+        int result = 0;         /* better code for lack of companion? */
+        struct device *dev = &wa->usb_iface->dev;
+        struct usb_device *usb_dev = urb->dev;
+        u8 unauth = (usb_dev->wusb && !usb_dev->authenticated) ? 0x80 : 0;
+        u8 portnum = wusb_port_no_to_idx(urb->dev->portnum);
+
+        d_fnstart(3, dev, "(rpipe %p wa %p ep %p, urb %p)\n",
+                    rpipe, wa, ep, urb);
+#define AIM_CHECK(rdf, val, text)                                       \
+        do {                                                            \
+                if (rpipe->descr.rdf != (val)) {                        \
+                        dev_err(dev,                                    \
+                                "rpipe aim discrepancy: " #rdf " " text "\n", \
+                                rpipe->descr.rdf, (val));               \
+                        result = -EINVAL;                               \
+                        WARN_ON(1);                                     \
+                }                                                       \
+        } while (0)
+        AIM_CHECK(wMaxPacketSize, cpu_to_le16(ep->desc.wMaxPacketSize),
+                  "(%u vs %u)");
+        AIM_CHECK(bHSHubPort, portnum, "(%u vs %u)");
+        AIM_CHECK(bSpeed, usb_pipeendpoint(urb->pipe) == 0 ?
+                        UWB_PHY_RATE_53 : UWB_PHY_RATE_200,
+                  "(%u vs %u)");
+        AIM_CHECK(bDeviceAddress, urb->dev->devnum | unauth, "(%u vs %u)");
+        AIM_CHECK(bEndpointAddress, ep->desc.bEndpointAddress, "(%u vs %u)");
+        AIM_CHECK(bInterval, ep->desc.bInterval, "(%u vs %u)");
+        AIM_CHECK(bmAttribute, ep->desc.bmAttributes & 0x03, "(%u vs %u)");
+#undef AIM_CHECK
+        return result;
+}
+
+#ifndef CONFIG_BUG
+#define CONFIG_BUG 0
+#endif
+
+/*
+ * Make sure there is an rpipe allocated for an endpoint
+ *
+ * If already allocated, we just refcount it; if not, we get an
+ * idle one, aim it to the right location and take it.
+ *
+ * Attaches to ep->hcpriv and rpipe->ep to ep.
+ */
+int rpipe_get_by_ep(struct wahc *wa, struct usb_host_endpoint *ep,
+                    struct urb *urb, gfp_t gfp)
+{
+        int result = 0;
+        struct device *dev = &wa->usb_iface->dev;
+        struct wa_rpipe *rpipe;
+        u8 eptype;
+
+        d_fnstart(3, dev, "(wa %p ep %p urb %p gfp 0x%08x)\n", wa, ep, urb,
+                  gfp);
+        mutex_lock(&wa->rpipe_mutex);
+        rpipe = ep->hcpriv;
+        if (rpipe != NULL) {
+                if (CONFIG_BUG == 1) {
+                        result = rpipe_check_aim(rpipe, wa, ep, urb, gfp);
+                        if (result < 0)
+                                goto error;
+                }
+                __rpipe_get(rpipe);
+                d_printf(2, dev, "ep 0x%02x: reusing rpipe %u\n",
+                         ep->desc.bEndpointAddress,
+                         le16_to_cpu(rpipe->descr.wRPipeIndex));
+        } else {
+                /* hmm, assign idle rpipe, aim it */
+                result = -ENOBUFS;
+                eptype = ep->desc.bmAttributes & 0x03;
+                result = rpipe_get_idle(&rpipe, wa, 1 << eptype, gfp);
+                if (result < 0)
+                        goto error;
+                result = rpipe_aim(rpipe, wa, ep, urb, gfp);
+                if (result < 0) {
+                        rpipe_put(rpipe);
+                        goto error;
+                }
+                ep->hcpriv = rpipe;
+                rpipe->ep = ep;
+                __rpipe_get(rpipe);     /* for caching into ep->hcpriv */
+                d_printf(2, dev, "ep 0x%02x: using rpipe %u\n",
+                         ep->desc.bEndpointAddress,
+                         le16_to_cpu(rpipe->descr.wRPipeIndex));
+        }
+        d_dump(4, dev, &rpipe->descr, sizeof(rpipe->descr));
+error:
+        mutex_unlock(&wa->rpipe_mutex);
+        d_fnend(3, dev, "(wa %p ep %p urb %p gfp 0x%08x)\n", wa, ep, urb, gfp);
+        return result;
+}
+
+/*
+ * Allocate the bitmap for each rpipe.
+ */
+int wa_rpipes_create(struct wahc *wa)
+{
+        wa->rpipes = wa->wa_descr->wNumRPipes;
+        wa->rpipe_bm = kzalloc(BITS_TO_LONGS(wa->rpipes)*sizeof(unsigned long),
+                               GFP_KERNEL);
+        if (wa->rpipe_bm == NULL)
+                return -ENOMEM;
+        return 0;
+}
+
+void wa_rpipes_destroy(struct wahc *wa)
+{
+        struct device *dev = &wa->usb_iface->dev;
+        d_fnstart(3, dev, "(wa %p)\n", wa);
+        if (!bitmap_empty(wa->rpipe_bm, wa->rpipes)) {
+                char buf[256];
+                WARN_ON(1);
+                bitmap_scnprintf(buf, sizeof(buf), wa->rpipe_bm, wa->rpipes);
+                dev_err(dev, "BUG: pipes not released on exit: %s\n", buf);
+        }
+        kfree(wa->rpipe_bm);
+        d_fnend(3, dev, "(wa %p)\n", wa);
+}
+
+/*
+ * Release resources allocated for an endpoint
+ *
+ * If there is an associated rpipe to this endpoint, Abort any pending
+ * transfers and put it. If the rpipe ends up being destroyed,
+ * __rpipe_destroy() will cleanup ep->hcpriv.
+ *
+ * This is called before calling hcd->stop(), so you don't need to do
+ * anything else in there.
+ */
+void rpipe_ep_disable(struct wahc *wa, struct usb_host_endpoint *ep)
+{
+        struct device *dev = &wa->usb_iface->dev;
+        struct wa_rpipe *rpipe;
+        d_fnstart(2, dev, "(wa %p ep %p)\n", wa, ep);
+        mutex_lock(&wa->rpipe_mutex);
+        rpipe = ep->hcpriv;
+        if (rpipe != NULL) {
+                unsigned rc = atomic_read(&rpipe->refcnt.refcount);
+                int result;
+                u16 index = le16_to_cpu(rpipe->descr.wRPipeIndex);
+
+                if (rc != 1)
+                        d_printf(1, dev, "(wa %p ep %p) rpipe %p refcnt %u\n",
+                                 wa, ep, rpipe, rc);
+
+                d_printf(1, dev, "rpipe %u: abort\n", index);
+                result = usb_control_msg(
+                        wa->usb_dev, usb_rcvctrlpipe(wa->usb_dev, 0),
+                        USB_REQ_RPIPE_ABORT,
+                        USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_RPIPE,
+                        0, index, NULL, 0, 1000 /* FIXME: arbitrary */);
+                if (result < 0 && result != -ENODEV /* dev is gone */)
+                        d_printf(1, dev, "(wa %p rpipe %u): abort failed: %d\n",
+                                 wa, index, result);
+                rpipe_put(rpipe);
+        }
+        mutex_unlock(&wa->rpipe_mutex);
+        d_fnend(2, dev, "(wa %p ep %p)\n", wa, ep);
+        return;
+}
+EXPORT_SYMBOL_GPL(rpipe_ep_disable);
diff --git a/drivers/usb/wusbcore/wa-xfer.c b/drivers/usb/wusbcore/wa-xfer.c
new file mode 100644
index 000000000000..c038635d1c64
--- /dev/null
+++ b/drivers/usb/wusbcore/wa-xfer.c
@@ -0,0 +1,1709 @@
+/*
+ * WUSB Wire Adapter
+ * Data transfer and URB enqueing
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * How transfers work: get a buffer, break it up in segments (segment
+ * size is a multiple of the maxpacket size). For each segment issue a
+ * segment request (struct wa_xfer_*), then send the data buffer if
+ * out or nothing if in (all over the DTO endpoint).
+ *
+ * For each submitted segment request, a notification will come over
+ * the NEP endpoint and a transfer result (struct xfer_result) will
+ * arrive in the DTI URB. Read it, get the xfer ID, see if there is
+ * data coming (inbound transfer), schedule a read and handle it.
+ *
+ * Sounds simple, it is a pain to implement.
+ *
+ *
+ * ENTRY POINTS
+ *
+ *   FIXME
+ *
+ * LIFE CYCLE / STATE DIAGRAM
+ *
+ *   FIXME
+ *
+ * THIS CODE IS DISGUSTING
+ *
+ *   Warned you are; it's my second try and still not happy with it.
+ *
+ * NOTES:
+ *
+ *   - No iso
+ *
+ *   - Supports DMA xfers, control, bulk and maybe interrupt
+ *
+ *   - Does not recycle unused rpipes
+ *
+ *     An rpipe is assigned to an endpoint the first time it is used,
+ *     and then it's there, assigned, until the endpoint is disabled
+ *     (destroyed [{h,d}wahc_op_ep_disable()]. The assignment of the
+ *     rpipe to the endpoint is done under the wa->rpipe_sem semaphore
+ *     (should be a mutex).
+ *
+ *     Two methods it could be done:
+ *
+ *     (a) set up a timer everytime an rpipe's use count drops to 1
+ *         (which means unused) or when a transfer ends. Reset the
+ *         timer when a xfer is queued. If the timer expires, release
+ *         the rpipe [see rpipe_ep_disable()].
+ *
+ *     (b) when looking for free rpipes to attach [rpipe_get_by_ep()],
+ *         when none are found go over the list, check their endpoint
+ *         and their activity record (if no last-xfer-done-ts in the
+ *         last x seconds) take it
+ *
+ *     However, due to the fact that we have a set of limited
+ *     resources (max-segments-at-the-same-time per xfer,
+ *     xfers-per-ripe, blocks-per-rpipe, rpipes-per-host), at the end
+ *     we are going to have to rebuild all this based on an scheduler,
+ *     to where we have a list of transactions to do and based on the
+ *     availability of the different requried components (blocks,
+ *     rpipes, segment slots, etc), we go scheduling them. Painful.
+ */
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/hash.h>
+#include "wa-hc.h"
+#include "wusbhc.h"
+
+#undef D_LOCAL
+#define D_LOCAL 0 /* 0 disabled, > 0 different levels... */
+#include <linux/uwb/debug.h>
+
+enum {
+        WA_SEGS_MAX = 255,
+};
+
+enum wa_seg_status {
+        WA_SEG_NOTREADY,
+        WA_SEG_READY,
+        WA_SEG_DELAYED,
+        WA_SEG_SUBMITTED,
+        WA_SEG_PENDING,
+        WA_SEG_DTI_PENDING,
+        WA_SEG_DONE,
+        WA_SEG_ERROR,
+        WA_SEG_ABORTED,
+};
+
+static void wa_xfer_delayed_run(struct wa_rpipe *);
+
+/*
+ * Life cycle governed by 'struct urb' (the refcount of the struct is
+ * that of the 'struct urb' and usb_free_urb() would free the whole
+ * struct).
+ */
+struct wa_seg {
+        struct urb urb;
+        struct urb *dto_urb;            /* for data output? */
+        struct list_head list_node;     /* for rpipe->req_list */
+        struct wa_xfer *xfer;           /* out xfer */
+        u8 index;                       /* which segment we are */
+        enum wa_seg_status status;
+        ssize_t result;                 /* bytes xfered or error */
+        struct wa_xfer_hdr xfer_hdr;
+        u8 xfer_extra[];                /* xtra space for xfer_hdr_ctl */
+};
+
+static void wa_seg_init(struct wa_seg *seg)
+{
+        /* usb_init_urb() repeats a lot of work, so we do it here */
+        kref_init(&seg->urb.kref);
+}
+
+/*
+ * Protected by xfer->lock
+ *
+ */
+struct wa_xfer {
+        struct kref refcnt;
+        struct list_head list_node;
+        spinlock_t lock;
+        u32 id;
+
+        struct wahc *wa;                /* Wire adapter we are plugged to */
+        struct usb_host_endpoint *ep;
+        struct urb *urb;                /* URB we are transfering for */
+        struct wa_seg **seg;            /* transfer segments */
+        u8 segs, segs_submitted, segs_done;
+        unsigned is_inbound:1;
+        unsigned is_dma:1;
+        size_t seg_size;
+        int result;
+
+        gfp_t gfp;                      /* allocation mask */
+
+        struct wusb_dev *wusb_dev;      /* for activity timestamps */
+};
+
+static inline void wa_xfer_init(struct wa_xfer *xfer)
+{
+        kref_init(&xfer->refcnt);
+        INIT_LIST_HEAD(&xfer->list_node);
+        spin_lock_init(&xfer->lock);
+}
+
+/*
+ * Destory a transfer structure
+ *
+ * Note that the xfer->seg[index] thingies follow the URB life cycle,
+ * so we need to put them, not free them.
+ */
+static void wa_xfer_destroy(struct kref *_xfer)
+{
+        struct wa_xfer *xfer = container_of(_xfer, struct wa_xfer, refcnt);
+        if (xfer->seg) {
+                unsigned cnt;
+                for (cnt = 0; cnt < xfer->segs; cnt++) {
+                        if (xfer->is_inbound)
+                                usb_put_urb(xfer->seg[cnt]->dto_urb);
+                        usb_put_urb(&xfer->seg[cnt]->urb);
+                }
+        }
+        kfree(xfer);
+        d_printf(2, NULL, "xfer %p destroyed\n", xfer);
+}
+
+static void wa_xfer_get(struct wa_xfer *xfer)
+{
+        kref_get(&xfer->refcnt);
+}
+
+static void wa_xfer_put(struct wa_xfer *xfer)
+{
+        d_fnstart(3, NULL, "(xfer %p) -- ref count bef put %d\n",
+                    xfer, atomic_read(&xfer->refcnt.refcount));
+        kref_put(&xfer->refcnt, wa_xfer_destroy);
+        d_fnend(3, NULL, "(xfer %p) = void\n", xfer);
+}
+
+/*
+ * xfer is referenced
+ *
+ * xfer->lock has to be unlocked
+ *
+ * We take xfer->lock for setting the result; this is a barrier
+ * against drivers/usb/core/hcd.c:unlink1() being called after we call
+ * usb_hcd_giveback_urb() and wa_urb_dequeue() trying to get a
+ * reference to the transfer.
+ */
+static void wa_xfer_giveback(struct wa_xfer *xfer)
+{
+        unsigned long flags;
+        d_fnstart(3, NULL, "(xfer %p)\n", xfer);
+        spin_lock_irqsave(&xfer->wa->xfer_list_lock, flags);
+        list_del_init(&xfer->list_node);
+        spin_unlock_irqrestore(&xfer->wa->xfer_list_lock, flags);
+        /* FIXME: segmentation broken -- kills DWA */
+        wusbhc_giveback_urb(xfer->wa->wusb, xfer->urb, xfer->result);
+        wa_put(xfer->wa);
+        wa_xfer_put(xfer);
+        d_fnend(3, NULL, "(xfer %p) = void\n", xfer);
+}
+
+/*
+ * xfer is referenced
+ *
+ * xfer->lock has to be unlocked
+ */
+static void wa_xfer_completion(struct wa_xfer *xfer)
+{
+        d_fnstart(3, NULL, "(xfer %p)\n", xfer);
+        if (xfer->wusb_dev)
+                wusb_dev_put(xfer->wusb_dev);
+        rpipe_put(xfer->ep->hcpriv);
+        wa_xfer_giveback(xfer);
+        d_fnend(3, NULL, "(xfer %p) = void\n", xfer);
+        return;
+}
+
+/*
+ * If transfer is done, wrap it up and return true
+ *
+ * xfer->lock has to be locked
+ */
+static unsigned __wa_xfer_is_done(struct wa_xfer *xfer)
+{
+        unsigned result, cnt;
+        struct wa_seg *seg;
+        struct urb *urb = xfer->urb;
+        unsigned found_short = 0;
+
+        d_fnstart(3, NULL, "(xfer %p)\n", xfer);
+        result = xfer->segs_done == xfer->segs_submitted;
+        if (result == 0)
+                goto out;
+        urb->actual_length = 0;
+        for (cnt = 0; cnt < xfer->segs; cnt++) {
+                seg = xfer->seg[cnt];
+                switch (seg->status) {
+                case WA_SEG_DONE:
+                        if (found_short && seg->result > 0) {
+                                if (printk_ratelimit())
+                                        printk(KERN_ERR "xfer %p#%u: bad short "
+                                               "segments (%zu)\n", xfer, cnt,
+                                               seg->result);
+                                urb->status = -EINVAL;
+                                goto out;
+                        }
+                        urb->actual_length += seg->result;
+                        if (seg->result < xfer->seg_size
+                            && cnt != xfer->segs-1)
+                                found_short = 1;
+                        d_printf(2, NULL, "xfer %p#%u: DONE short %d "
+                                 "result %zu urb->actual_length %d\n",
+                                 xfer, seg->index, found_short, seg->result,
+                                 urb->actual_length);
+                        break;
+                case WA_SEG_ERROR:
+                        xfer->result = seg->result;
+                        d_printf(2, NULL, "xfer %p#%u: ERROR result %zu\n",
+                                 xfer, seg->index, seg->result);
+                        goto out;
+                case WA_SEG_ABORTED:
+                        WARN_ON(urb->status != -ECONNRESET
+                                && urb->status != -ENOENT);
+                        d_printf(2, NULL, "xfer %p#%u ABORTED: result %d\n",
+                                 xfer, seg->index, urb->status);
+                        xfer->result = urb->status;
+                        goto out;
+                default:
+                        /* if (printk_ratelimit()) */
+                                printk(KERN_ERR "xfer %p#%u: "
+                                       "is_done bad state %d\n",
+                                       xfer, cnt, seg->status);
+                        xfer->result = -EINVAL;
+                        WARN_ON(1);
+                        goto out;
+                }
+        }
+        xfer->result = 0;
+out:
+        d_fnend(3, NULL, "(xfer %p) = void\n", xfer);
+        return result;
+}
+
+/*
+ * Initialize a transfer's ID
+ *
+ * We need to use a sequential number; if we use the pointer or the
+ * hash of the pointer, it can repeat over sequential transfers and
+ * then it will confuse the HWA....wonder why in hell they put a 32
+ * bit handle in there then.
+ */
+static void wa_xfer_id_init(struct wa_xfer *xfer)
+{
+        xfer->id = atomic_add_return(1, &xfer->wa->xfer_id_count);
+}
+
+/*
+ * Return the xfer's ID associated with xfer
+ *
+ * Need to generate a
+ */
+static u32 wa_xfer_id(struct wa_xfer *xfer)
+{
+        return xfer->id;
+}
+
+/*
+ * Search for a transfer list ID on the HCD's URB list
+ *
+ * For 32 bit architectures, we use the pointer itself; for 64 bits, a
+ * 32-bit hash of the pointer.
+ *
+ * @returns NULL if not found.
+ */
+static struct wa_xfer *wa_xfer_get_by_id(struct wahc *wa, u32 id)
+{
+        unsigned long flags;
+        struct wa_xfer *xfer_itr;
+        spin_lock_irqsave(&wa->xfer_list_lock, flags);
+        list_for_each_entry(xfer_itr, &wa->xfer_list, list_node) {
+                if (id == xfer_itr->id) {
+                        wa_xfer_get(xfer_itr);
+                        goto out;
+                }
+        }
+        xfer_itr = NULL;
+out:
+        spin_unlock_irqrestore(&wa->xfer_list_lock, flags);
+        return xfer_itr;
+}
+
+struct wa_xfer_abort_buffer {
+        struct urb urb;
+        struct wa_xfer_abort cmd;
+};
+
+static void __wa_xfer_abort_cb(struct urb *urb)
+{
+        struct wa_xfer_abort_buffer *b = urb->context;
+        usb_put_urb(&b->urb);
+}
+
+/*
+ * Aborts an ongoing transaction
+ *
+ * Assumes the transfer is referenced and locked and in a submitted
+ * state (mainly that there is an endpoint/rpipe assigned).
+ *
+ * The callback (see above) does nothing but freeing up the data by
+ * putting the URB. Because the URB is allocated at the head of the
+ * struct, the whole space we allocated is kfreed.
+ *
+ * We'll get an 'aborted transaction' xfer result on DTI, that'll
+ * politely ignore because at this point the transaction has been
+ * marked as aborted already.
+ */
+static void __wa_xfer_abort(struct wa_xfer *xfer)
+{
+        int result;
+        struct device *dev = &xfer->wa->usb_iface->dev;
+        struct wa_xfer_abort_buffer *b;
+        struct wa_rpipe *rpipe = xfer->ep->hcpriv;
+
+        b = kmalloc(sizeof(*b), GFP_ATOMIC);
+        if (b == NULL)
+                goto error_kmalloc;
+        b->cmd.bLength =  sizeof(b->cmd);
+        b->cmd.bRequestType = WA_XFER_ABORT;
+        b->cmd.wRPipe = rpipe->descr.wRPipeIndex;
+        b->cmd.dwTransferID = wa_xfer_id(xfer);
+
+        usb_init_urb(&b->urb);
+        usb_fill_bulk_urb(&b->urb, xfer->wa->usb_dev,
+                usb_sndbulkpipe(xfer->wa->usb_dev,
+                                xfer->wa->dto_epd->bEndpointAddress),
+                &b->cmd, sizeof(b->cmd), __wa_xfer_abort_cb, b);
+        result = usb_submit_urb(&b->urb, GFP_ATOMIC);
+        if (result < 0)
+                goto error_submit;
+        return;                         /* callback frees! */
+
+
+error_submit:
+        if (printk_ratelimit())
+                dev_err(dev, "xfer %p: Can't submit abort request: %d\n",
+                        xfer, result);
+        kfree(b);
+error_kmalloc:
+        return;
+
+}
+
+/*
+ *
+ * @returns < 0 on error, transfer segment request size if ok
+ */
+static ssize_t __wa_xfer_setup_sizes(struct wa_xfer *xfer,
+                                     enum wa_xfer_type *pxfer_type)
+{
+        ssize_t result;
+        struct device *dev = &xfer->wa->usb_iface->dev;
+        size_t maxpktsize;
+        struct urb *urb = xfer->urb;
+        struct wa_rpipe *rpipe = xfer->ep->hcpriv;
+
+        d_fnstart(3, dev, "(xfer %p [rpipe %p] urb %p)\n",
+                  xfer, rpipe, urb);
+        switch (rpipe->descr.bmAttribute & 0x3) {
+        case USB_ENDPOINT_XFER_CONTROL:
+                *pxfer_type = WA_XFER_TYPE_CTL;
+                result = sizeof(struct wa_xfer_ctl);
+                break;
+        case USB_ENDPOINT_XFER_INT:
+        case USB_ENDPOINT_XFER_BULK:
+                *pxfer_type = WA_XFER_TYPE_BI;
+                result = sizeof(struct wa_xfer_bi);
+                break;
+        case USB_ENDPOINT_XFER_ISOC:
+                dev_err(dev, "FIXME: ISOC not implemented\n");
+                result = -ENOSYS;
+                goto error;
+        default:
+                /* never happens */
+                BUG();
+                result = -EINVAL;       /* shut gcc up */
+        };
+        xfer->is_inbound = urb->pipe & USB_DIR_IN ? 1 : 0;
+        xfer->is_dma = urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP ? 1 : 0;
+        xfer->seg_size = le16_to_cpu(rpipe->descr.wBlocks)
+                * 1 << (xfer->wa->wa_descr->bRPipeBlockSize - 1);
+        /* Compute the segment size and make sure it is a multiple of
+         * the maxpktsize (WUSB1.0[8.3.3.1])...not really too much of
+         * a check (FIXME) */
+        maxpktsize = le16_to_cpu(rpipe->descr.wMaxPacketSize);
+        if (xfer->seg_size < maxpktsize) {
+                dev_err(dev, "HW BUG? seg_size %zu smaller than maxpktsize "
+                        "%zu\n", xfer->seg_size, maxpktsize);
+                result = -EINVAL;
+                goto error;
+        }
+        xfer->seg_size = (xfer->seg_size / maxpktsize) * maxpktsize;
+        xfer->segs = (urb->transfer_buffer_length + xfer->seg_size - 1)
+                / xfer->seg_size;
+        if (xfer->segs >= WA_SEGS_MAX) {
+                dev_err(dev, "BUG? ops, number of segments %d bigger than %d\n",
+                        (int)(urb->transfer_buffer_length / xfer->seg_size),
+                        WA_SEGS_MAX);
+                result = -EINVAL;
+                goto error;
+        }
+        if (xfer->segs == 0 && *pxfer_type == WA_XFER_TYPE_CTL)
+                xfer->segs = 1;
+error:
+        d_fnend(3, dev, "(xfer %p [rpipe %p] urb %p) = %d\n",
+                xfer, rpipe, urb, (int)result);
+        return result;
+}
+
+/** Fill in the common request header and xfer-type specific data. */
+static void __wa_xfer_setup_hdr0(struct wa_xfer *xfer,
+                                 struct wa_xfer_hdr *xfer_hdr0,
+                                 enum wa_xfer_type xfer_type,
+                                 size_t xfer_hdr_size)
+{
+        struct wa_rpipe *rpipe = xfer->ep->hcpriv;
+
+        xfer_hdr0 = &xfer->seg[0]->xfer_hdr;
+        xfer_hdr0->bLength = xfer_hdr_size;
+        xfer_hdr0->bRequestType = xfer_type;
+        xfer_hdr0->wRPipe = rpipe->descr.wRPipeIndex;
+        xfer_hdr0->dwTransferID = wa_xfer_id(xfer);
+        xfer_hdr0->bTransferSegment = 0;
+        switch (xfer_type) {
+        case WA_XFER_TYPE_CTL: {
+                struct wa_xfer_ctl *xfer_ctl =
+                        container_of(xfer_hdr0, struct wa_xfer_ctl, hdr);
+                xfer_ctl->bmAttribute = xfer->is_inbound ? 1 : 0;
+                BUG_ON(xfer->urb->transfer_flags & URB_NO_SETUP_DMA_MAP
+                       && xfer->urb->setup_packet == NULL);
+                memcpy(&xfer_ctl->baSetupData, xfer->urb->setup_packet,
+                       sizeof(xfer_ctl->baSetupData));
+                break;
+        }
+        case WA_XFER_TYPE_BI:
+                break;
+        case WA_XFER_TYPE_ISO:
+                printk(KERN_ERR "FIXME: ISOC not implemented\n");
+        default:
+                BUG();
+        };
+}
+
+/*
+ * Callback for the OUT data phase of the segment request
+ *
+ * Check wa_seg_cb(); most comments also apply here because this
+ * function does almost the same thing and they work closely
+ * together.
+ *
+ * If the seg request has failed but this DTO phase has suceeded,
+ * wa_seg_cb() has already failed the segment and moved the
+ * status to WA_SEG_ERROR, so this will go through 'case 0' and
+ * effectively do nothing.
+ */
+static void wa_seg_dto_cb(struct urb *urb)
+{
+        struct wa_seg *seg = urb->context;
+        struct wa_xfer *xfer = seg->xfer;
+        struct wahc *wa;
+        struct device *dev;
+        struct wa_rpipe *rpipe;
+        unsigned long flags;
+        unsigned rpipe_ready = 0;
+        u8 done = 0;
+
+        d_fnstart(3, NULL, "(urb %p [%d])\n", urb, urb->status);
+        switch (urb->status) {
+        case 0:
+                spin_lock_irqsave(&xfer->lock, flags);
+                wa = xfer->wa;
+                dev = &wa->usb_iface->dev;
+                d_printf(2, dev, "xfer %p#%u: data out done (%d bytes)\n",
+                           xfer, seg->index, urb->actual_length);
+                if (seg->status < WA_SEG_PENDING)
+                        seg->status = WA_SEG_PENDING;
+                seg->result = urb->actual_length;
+                spin_unlock_irqrestore(&xfer->lock, flags);
+                break;
+        case -ECONNRESET:       /* URB unlinked; no need to do anything */
+        case -ENOENT:           /* as it was done by the who unlinked us */
+                break;
+        default:                /* Other errors ... */
+                spin_lock_irqsave(&xfer->lock, flags);
+                wa = xfer->wa;
+                dev = &wa->usb_iface->dev;
+                rpipe = xfer->ep->hcpriv;
+                if (printk_ratelimit())
+                        dev_err(dev, "xfer %p#%u: data out error %d\n",
+                                xfer, seg->index, urb->status);
+                if (edc_inc(&wa->nep_edc, EDC_MAX_ERRORS,
+                            EDC_ERROR_TIMEFRAME)){
+                        dev_err(dev, "DTO: URB max acceptable errors "
+                                "exceeded, resetting device\n");
+                        wa_reset_all(wa);
+                }
+                if (seg->status != WA_SEG_ERROR) {
+                        seg->status = WA_SEG_ERROR;
+                        seg->result = urb->status;
+                        xfer->segs_done++;
+                        __wa_xfer_abort(xfer);
+                        rpipe_ready = rpipe_avail_inc(rpipe);
+                        done = __wa_xfer_is_done(xfer);
+                }
+                spin_unlock_irqrestore(&xfer->lock, flags);
+                if (done)
+                        wa_xfer_completion(xfer);
+                if (rpipe_ready)
+                        wa_xfer_delayed_run(rpipe);
+        }
+        d_fnend(3, NULL, "(urb %p [%d]) = void\n", urb, urb->status);
+}
+
+/*
+ * Callback for the segment request
+ *
+ * If succesful transition state (unless already transitioned or
+ * outbound transfer); otherwise, take a note of the error, mark this
+ * segment done and try completion.
+ *
+ * Note we don't access until we are sure that the transfer hasn't
+ * been cancelled (ECONNRESET, ENOENT), which could mean that
+ * seg->xfer could be already gone.
+ *
+ * We have to check before setting the status to WA_SEG_PENDING
+ * because sometimes the xfer result callback arrives before this
+ * callback (geeeeeeze), so it might happen that we are already in
+ * another state. As well, we don't set it if the transfer is inbound,
+ * as in that case, wa_seg_dto_cb will do it when the OUT data phase
+ * finishes.
+ */
+static void wa_seg_cb(struct urb *urb)
+{
+        struct wa_seg *seg = urb->context;
+        struct wa_xfer *xfer = seg->xfer;
+        struct wahc *wa;
+        struct device *dev;
+        struct wa_rpipe *rpipe;
+        unsigned long flags;
+        unsigned rpipe_ready;
+        u8 done = 0;
+
+        d_fnstart(3, NULL, "(urb %p [%d])\n", urb, urb->status);
+        switch (urb->status) {
+        case 0:
+                spin_lock_irqsave(&xfer->lock, flags);
+                wa = xfer->wa;
+                dev = &wa->usb_iface->dev;
+                d_printf(2, dev, "xfer %p#%u: request done\n",
+                           xfer, seg->index);
+                if (xfer->is_inbound && seg->status < WA_SEG_PENDING)
+                        seg->status = WA_SEG_PENDING;
+                spin_unlock_irqrestore(&xfer->lock, flags);
+                break;
+        case -ECONNRESET:       /* URB unlinked; no need to do anything */
+        case -ENOENT:           /* as it was done by the who unlinked us */
+                break;
+        default:                /* Other errors ... */
+                spin_lock_irqsave(&xfer->lock, flags);
+                wa = xfer->wa;
+                dev = &wa->usb_iface->dev;
+                rpipe = xfer->ep->hcpriv;
+                if (printk_ratelimit())
+                        dev_err(dev, "xfer %p#%u: request error %d\n",
+                                xfer, seg->index, urb->status);
+                if (edc_inc(&wa->nep_edc, EDC_MAX_ERRORS,
+                            EDC_ERROR_TIMEFRAME)){
+                        dev_err(dev, "DTO: URB max acceptable errors "
+                                "exceeded, resetting device\n");
+                        wa_reset_all(wa);
+                }
+                usb_unlink_urb(seg->dto_urb);
+                seg->status = WA_SEG_ERROR;
+                seg->result = urb->status;
+                xfer->segs_done++;
+                __wa_xfer_abort(xfer);
+                rpipe_ready = rpipe_avail_inc(rpipe);
+                done = __wa_xfer_is_done(xfer);
+                spin_unlock_irqrestore(&xfer->lock, flags);
+                if (done)
+                        wa_xfer_completion(xfer);
+                if (rpipe_ready)
+                        wa_xfer_delayed_run(rpipe);
+        }
+        d_fnend(3, NULL, "(urb %p [%d]) = void\n", urb, urb->status);
+}
+
+/*
+ * Allocate the segs array and initialize each of them
+ *
+ * The segments are freed by wa_xfer_destroy() when the xfer use count
+ * drops to zero; however, because each segment is given the same life
+ * cycle as the USB URB it contains, it is actually freed by
+ * usb_put_urb() on the contained USB URB (twisted, eh?).
+ */
+static int __wa_xfer_setup_segs(struct wa_xfer *xfer, size_t xfer_hdr_size)
+{
+        int result, cnt;
+        size_t alloc_size = sizeof(*xfer->seg[0])
+                - sizeof(xfer->seg[0]->xfer_hdr) + xfer_hdr_size;
+        struct usb_device *usb_dev = xfer->wa->usb_dev;
+        const struct usb_endpoint_descriptor *dto_epd = xfer->wa->dto_epd;
+        struct wa_seg *seg;
+        size_t buf_itr, buf_size, buf_itr_size;
+
+        result = -ENOMEM;
+        xfer->seg = kcalloc(xfer->segs, sizeof(xfer->seg[0]), GFP_ATOMIC);
+        if (xfer->seg == NULL)
+                goto error_segs_kzalloc;
+        buf_itr = 0;
+        buf_size = xfer->urb->transfer_buffer_length;
+        for (cnt = 0; cnt < xfer->segs; cnt++) {
+                seg = xfer->seg[cnt] = kzalloc(alloc_size, GFP_ATOMIC);
+                if (seg == NULL)
+                        goto error_seg_kzalloc;
+                wa_seg_init(seg);
+                seg->xfer = xfer;
+                seg->index = cnt;
+                usb_fill_bulk_urb(&seg->urb, usb_dev,
+                                  usb_sndbulkpipe(usb_dev,
+                                                  dto_epd->bEndpointAddress),
+                                  &seg->xfer_hdr, xfer_hdr_size,
+                                  wa_seg_cb, seg);
+                buf_itr_size = buf_size > xfer->seg_size ?
+                        xfer->seg_size : buf_size;
+                if (xfer->is_inbound == 0 && buf_size > 0) {
+                        seg->dto_urb = usb_alloc_urb(0, GFP_ATOMIC);
+                        if (seg->dto_urb == NULL)
+                                goto error_dto_alloc;
+                        usb_fill_bulk_urb(
+                                seg->dto_urb, usb_dev,
+                                usb_sndbulkpipe(usb_dev,
+                                                dto_epd->bEndpointAddress),
+                                NULL, 0, wa_seg_dto_cb, seg);
+                        if (xfer->is_dma) {
+                                seg->dto_urb->transfer_dma =
+                                        xfer->urb->transfer_dma + buf_itr;
+                                seg->dto_urb->transfer_flags |=
+                                        URB_NO_TRANSFER_DMA_MAP;
+                        } else
+                                seg->dto_urb->transfer_buffer =
+                                        xfer->urb->transfer_buffer + buf_itr;
+                        seg->dto_urb->transfer_buffer_length = buf_itr_size;
+                }
+                seg->status = WA_SEG_READY;
+                buf_itr += buf_itr_size;
+                buf_size -= buf_itr_size;
+        }
+        return 0;
+
+error_dto_alloc:
+        kfree(xfer->seg[cnt]);
+        cnt--;
+error_seg_kzalloc:
+        /* use the fact that cnt is left at were it failed */
+        for (; cnt > 0; cnt--) {
+                if (xfer->is_inbound == 0)
+                        kfree(xfer->seg[cnt]->dto_urb);
+                kfree(xfer->seg[cnt]);
+        }
+error_segs_kzalloc:
+        return result;
+}
+
+/*
+ * Allocates all the stuff needed to submit a transfer
+ *
+ * Breaks the whole data buffer in a list of segments, each one has a
+ * structure allocated to it and linked in xfer->seg[index]
+ *
+ * FIXME: merge setup_segs() and the last part of this function, no
+ *        need to do two for loops when we could run everything in a
+ *        single one
+ */
+static int __wa_xfer_setup(struct wa_xfer *xfer, struct urb *urb)
+{
+        int result;
+        struct device *dev = &xfer->wa->usb_iface->dev;
+        enum wa_xfer_type xfer_type = 0; /* shut up GCC */
+        size_t xfer_hdr_size, cnt, transfer_size;
+        struct wa_xfer_hdr *xfer_hdr0, *xfer_hdr;
+
+        d_fnstart(3, dev, "(xfer %p [rpipe %p] urb %p)\n",
+                  xfer, xfer->ep->hcpriv, urb);
+
+        result = __wa_xfer_setup_sizes(xfer, &xfer_type);
+        if (result < 0)
+                goto error_setup_sizes;
+        xfer_hdr_size = result;
+        result = __wa_xfer_setup_segs(xfer, xfer_hdr_size);
+        if (result < 0) {
+                dev_err(dev, "xfer %p: Failed to allocate %d segments: %d\n",
+                        xfer, xfer->segs, result);
+                goto error_setup_segs;
+        }
+        /* Fill the first header */
+        xfer_hdr0 = &xfer->seg[0]->xfer_hdr;
+        wa_xfer_id_init(xfer);
+        __wa_xfer_setup_hdr0(xfer, xfer_hdr0, xfer_type, xfer_hdr_size);
+
+        /* Fill remainig headers */
+        xfer_hdr = xfer_hdr0;
+        transfer_size = urb->transfer_buffer_length;
+        xfer_hdr0->dwTransferLength = transfer_size > xfer->seg_size ?
+                xfer->seg_size : transfer_size;
+        transfer_size -=  xfer->seg_size;
+        for (cnt = 1; cnt < xfer->segs; cnt++) {
+                xfer_hdr = &xfer->seg[cnt]->xfer_hdr;
+                memcpy(xfer_hdr, xfer_hdr0, xfer_hdr_size);
+                xfer_hdr->bTransferSegment = cnt;
+                xfer_hdr->dwTransferLength = transfer_size > xfer->seg_size ?
+                        cpu_to_le32(xfer->seg_size)
+                        : cpu_to_le32(transfer_size);
+                xfer->seg[cnt]->status = WA_SEG_READY;
+                transfer_size -=  xfer->seg_size;
+        }
+        xfer_hdr->bTransferSegment |= 0x80;     /* this is the last segment */
+        result = 0;
+error_setup_segs:
+error_setup_sizes:
+        d_fnend(3, dev, "(xfer %p [rpipe %p] urb %p) = %d\n",
+                xfer, xfer->ep->hcpriv, urb, result);
+        return result;
+}
+
+/*
+ *
+ *
+ * rpipe->seg_lock is held!
+ */
+static int __wa_seg_submit(struct wa_rpipe *rpipe, struct wa_xfer *xfer,
+                           struct wa_seg *seg)
+{
+        int result;
+        result = usb_submit_urb(&seg->urb, GFP_ATOMIC);
+        if (result < 0) {
+                printk(KERN_ERR "xfer %p#%u: REQ submit failed: %d\n",
+                       xfer, seg->index, result);
+                goto error_seg_submit;
+        }
+        if (seg->dto_urb) {
+                result = usb_submit_urb(seg->dto_urb, GFP_ATOMIC);
+                if (result < 0) {
+                        printk(KERN_ERR "xfer %p#%u: DTO submit failed: %d\n",
+                               xfer, seg->index, result);
+                        goto error_dto_submit;
+                }
+        }
+        seg->status = WA_SEG_SUBMITTED;
+        rpipe_avail_dec(rpipe);
+        return 0;
+
+error_dto_submit:
+        usb_unlink_urb(&seg->urb);
+error_seg_submit:
+        seg->status = WA_SEG_ERROR;
+        seg->result = result;
+        return result;
+}
+
+/*
+ * Execute more queued request segments until the maximum concurrent allowed
+ *
+ * The ugly unlock/lock sequence on the error path is needed as the
+ * xfer->lock normally nests the seg_lock and not viceversa.
+ *
+ */
+static void wa_xfer_delayed_run(struct wa_rpipe *rpipe)
+{
+        int result;
+        struct device *dev = &rpipe->wa->usb_iface->dev;
+        struct wa_seg *seg;
+        struct wa_xfer *xfer;
+        unsigned long flags;
+
+        d_fnstart(1, dev, "(rpipe #%d) %d segments available\n",
+                  le16_to_cpu(rpipe->descr.wRPipeIndex),
+                  atomic_read(&rpipe->segs_available));
+        spin_lock_irqsave(&rpipe->seg_lock, flags);
+        while (atomic_read(&rpipe->segs_available) > 0
+              && !list_empty(&rpipe->seg_list)) {
+                seg = list_entry(rpipe->seg_list.next, struct wa_seg,
+                                 list_node);
+                list_del(&seg->list_node);
+                xfer = seg->xfer;
+                result = __wa_seg_submit(rpipe, xfer, seg);
+                d_printf(1, dev, "xfer %p#%u submitted from delayed "
+                         "[%d segments available] %d\n",
+                         xfer, seg->index,
+                         atomic_read(&rpipe->segs_available), result);
+                if (unlikely(result < 0)) {
+                        spin_unlock_irqrestore(&rpipe->seg_lock, flags);
+                        spin_lock_irqsave(&xfer->lock, flags);
+                        __wa_xfer_abort(xfer);
+                        xfer->segs_done++;
+                        spin_unlock_irqrestore(&xfer->lock, flags);
+                        spin_lock_irqsave(&rpipe->seg_lock, flags);
+                }
+        }
+        spin_unlock_irqrestore(&rpipe->seg_lock, flags);
+        d_fnend(1, dev, "(rpipe #%d) = void, %d segments available\n",
+                le16_to_cpu(rpipe->descr.wRPipeIndex),
+                atomic_read(&rpipe->segs_available));
+
+}
+
+/*
+ *
+ * xfer->lock is taken
+ *
+ * On failure submitting we just stop submitting and return error;
+ * wa_urb_enqueue_b() will execute the completion path
+ */
+static int __wa_xfer_submit(struct wa_xfer *xfer)
+{
+        int result;
+        struct wahc *wa = xfer->wa;
+        struct device *dev = &wa->usb_iface->dev;
+        unsigned cnt;
+        struct wa_seg *seg;
+        unsigned long flags;
+        struct wa_rpipe *rpipe = xfer->ep->hcpriv;
+        size_t maxrequests = le16_to_cpu(rpipe->descr.wRequests);
+        u8 available;
+        u8 empty;
+
+        d_fnstart(3, dev, "(xfer %p [rpipe %p])\n",
+                  xfer, xfer->ep->hcpriv);
+
+        spin_lock_irqsave(&wa->xfer_list_lock, flags);
+        list_add_tail(&xfer->list_node, &wa->xfer_list);
+        spin_unlock_irqrestore(&wa->xfer_list_lock, flags);
+
+        BUG_ON(atomic_read(&rpipe->segs_available) > maxrequests);
+        result = 0;
+        spin_lock_irqsave(&rpipe->seg_lock, flags);
+        for (cnt = 0; cnt < xfer->segs; cnt++) {
+                available = atomic_read(&rpipe->segs_available);
+                empty = list_empty(&rpipe->seg_list);
+                seg = xfer->seg[cnt];
+                d_printf(2, dev, "xfer %p#%u: available %u empty %u (%s)\n",
+                         xfer, cnt, available, empty,
+                         available == 0 || !empty ? "delayed" : "submitted");
+                if (available == 0 || !empty) {
+                        d_printf(1, dev, "xfer %p#%u: delayed\n", xfer, cnt);
+                        seg->status = WA_SEG_DELAYED;
+                        list_add_tail(&seg->list_node, &rpipe->seg_list);
+                } else {
+                        result = __wa_seg_submit(rpipe, xfer, seg);
+                        if (result < 0)
+                                goto error_seg_submit;
+                }
+                xfer->segs_submitted++;
+        }
+        spin_unlock_irqrestore(&rpipe->seg_lock, flags);
+        d_fnend(3, dev, "(xfer %p [rpipe %p]) = void\n", xfer,
+                xfer->ep->hcpriv);
+        return result;
+
+error_seg_submit:
+        __wa_xfer_abort(xfer);
+        spin_unlock_irqrestore(&rpipe->seg_lock, flags);
+        d_fnend(3, dev, "(xfer %p [rpipe %p]) = void\n", xfer,
+                xfer->ep->hcpriv);
+        return result;
+}
+
+/*
+ * Second part of a URB/transfer enqueuement
+ *
+ * Assumes this comes from wa_urb_enqueue() [maybe through
+ * wa_urb_enqueue_run()]. At this point:
+ *
+ * xfer->wa     filled and refcounted
+ * xfer->ep     filled with rpipe refcounted if
+ *              delayed == 0
+ * xfer->urb    filled and refcounted (this is the case when called
+ *              from wa_urb_enqueue() as we come from usb_submit_urb()
+ *              and when called by wa_urb_enqueue_run(), as we took an
+ *              extra ref dropped by _run() after we return).
+ * xfer->gfp    filled
+ *
+ * If we fail at __wa_xfer_submit(), then we just check if we are done
+ * and if so, we run the completion procedure. However, if we are not
+ * yet done, we do nothing and wait for the completion handlers from
+ * the submitted URBs or from the xfer-result path to kick in. If xfer
+ * result never kicks in, the xfer will timeout from the USB code and
+ * dequeue() will be called.
+ */
+static void wa_urb_enqueue_b(struct wa_xfer *xfer)
+{
+        int result;
+        unsigned long flags;
+        struct urb *urb = xfer->urb;
+        struct wahc *wa = xfer->wa;
+        struct wusbhc *wusbhc = wa->wusb;
+        struct device *dev = &wa->usb_iface->dev;
+        struct wusb_dev *wusb_dev;
+        unsigned done;
+
+        d_fnstart(3, dev, "(wa %p urb %p)\n", wa, urb);
+        result = rpipe_get_by_ep(wa, xfer->ep, urb, xfer->gfp);
+        if (result < 0)
+                goto error_rpipe_get;
+        result = -ENODEV;
+        /* FIXME: segmentation broken -- kills DWA */
+        mutex_lock(&wusbhc->mutex);             /* get a WUSB dev */
+        if (urb->dev == NULL)
+                goto error_dev_gone;
+        wusb_dev = __wusb_dev_get_by_usb_dev(wusbhc, urb->dev);
+        if (wusb_dev == NULL) {
+                mutex_unlock(&wusbhc->mutex);
+                goto error_dev_gone;
+        }
+        mutex_unlock(&wusbhc->mutex);
+
+        spin_lock_irqsave(&xfer->lock, flags);
+        xfer->wusb_dev = wusb_dev;
+        result = urb->status;
+        if (urb->status != -EINPROGRESS)
+                goto error_dequeued;
+
+        result = __wa_xfer_setup(xfer, urb);
+        if (result < 0)
+                goto error_xfer_setup;
+        result = __wa_xfer_submit(xfer);
+        if (result < 0)
+                goto error_xfer_submit;
+        spin_unlock_irqrestore(&xfer->lock, flags);
+        d_fnend(3, dev, "(wa %p urb %p) = void\n", wa, urb);
+        return;
+
+        /* this is basically wa_xfer_completion() broken up wa_xfer_giveback()
+         * does a wa_xfer_put() that will call wa_xfer_destroy() and clean
+         * upundo setup().
+         */
+error_xfer_setup:
+error_dequeued:
+        spin_unlock_irqrestore(&xfer->lock, flags);
+        /* FIXME: segmentation broken, kills DWA */
+        if (wusb_dev)
+                wusb_dev_put(wusb_dev);
+error_dev_gone:
+        rpipe_put(xfer->ep->hcpriv);
+error_rpipe_get:
+        xfer->result = result;
+        wa_xfer_giveback(xfer);
+        d_fnend(3, dev, "(wa %p urb %p) = (void) %d\n", wa, urb, result);
+        return;
+
+error_xfer_submit:
+        done = __wa_xfer_is_done(xfer);
+        xfer->result = result;
+        spin_unlock_irqrestore(&xfer->lock, flags);
+        if (done)
+                wa_xfer_completion(xfer);
+        d_fnend(3, dev, "(wa %p urb %p) = (void) %d\n", wa, urb, result);
+        return;
+}
+
+/*
+ * Execute the delayed transfers in the Wire Adapter @wa
+ *
+ * We need to be careful here, as dequeue() could be called in the
+ * middle.  That's why we do the whole thing under the
+ * wa->xfer_list_lock. If dequeue() jumps in, it first locks urb->lock
+ * and then checks the list -- so as we would be acquiring in inverse
+ * order, we just drop the lock once we have the xfer and reacquire it
+ * later.
+ */
+void wa_urb_enqueue_run(struct work_struct *ws)
+{
+        struct wahc *wa = container_of(ws, struct wahc, xfer_work);
+        struct device *dev = &wa->usb_iface->dev;
+        struct wa_xfer *xfer, *next;
+        struct urb *urb;
+
+        d_fnstart(3, dev, "(wa %p)\n", wa);
+        spin_lock_irq(&wa->xfer_list_lock);
+        list_for_each_entry_safe(xfer, next, &wa->xfer_delayed_list,
+                                 list_node) {
+                list_del_init(&xfer->list_node);
+                spin_unlock_irq(&wa->xfer_list_lock);
+
+                urb = xfer->urb;
+                wa_urb_enqueue_b(xfer);
+                usb_put_urb(urb);       /* taken when queuing */
+
+                spin_lock_irq(&wa->xfer_list_lock);
+        }
+        spin_unlock_irq(&wa->xfer_list_lock);
+        d_fnend(3, dev, "(wa %p) = void\n", wa);
+}
+EXPORT_SYMBOL_GPL(wa_urb_enqueue_run);
+
+/*
+ * Submit a transfer to the Wire Adapter in a delayed way
+ *
+ * The process of enqueuing involves possible sleeps() [see
+ * enqueue_b(), for the rpipe_get() and the mutex_lock()]. If we are
+ * in an atomic section, we defer the enqueue_b() call--else we call direct.
+ *
+ * @urb: We own a reference to it done by the HCI Linux USB stack that
+ *       will be given up by calling usb_hcd_giveback_urb() or by
+ *       returning error from this function -> ergo we don't have to
+ *       refcount it.
+ */
+int wa_urb_enqueue(struct wahc *wa, struct usb_host_endpoint *ep,
+                   struct urb *urb, gfp_t gfp)
+{
+        int result;
+        struct device *dev = &wa->usb_iface->dev;
+        struct wa_xfer *xfer;
+        unsigned long my_flags;
+        unsigned cant_sleep = irqs_disabled() | in_atomic();
+
+        d_fnstart(3, dev, "(wa %p ep %p urb %p [%d] gfp 0x%x)\n",
+                  wa, ep, urb, urb->transfer_buffer_length, gfp);
+
+        if (urb->transfer_buffer == NULL
+            && !(urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)
+            && urb->transfer_buffer_length != 0) {
+                dev_err(dev, "BUG? urb %p: NULL xfer buffer & NODMA\n", urb);
+                dump_stack();
+        }
+
+        result = -ENOMEM;
+        xfer = kzalloc(sizeof(*xfer), gfp);
+        if (xfer == NULL)
+                goto error_kmalloc;
+
+        result = -ENOENT;
+        if (urb->status != -EINPROGRESS)        /* cancelled */
+                goto error_dequeued;            /* before starting? */
+        wa_xfer_init(xfer);
+        xfer->wa = wa_get(wa);
+        xfer->urb = urb;
+        xfer->gfp = gfp;
+        xfer->ep = ep;
+        urb->hcpriv = xfer;
+        d_printf(2, dev, "xfer %p urb %p pipe 0x%02x [%d bytes] %s %s %s\n",
+                 xfer, urb, urb->pipe, urb->transfer_buffer_length,
+                 urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP ? "dma" : "nodma",
+                 urb->pipe & USB_DIR_IN ? "inbound" : "outbound",
+                 cant_sleep ? "deferred" : "inline");
+        if (cant_sleep) {
+                usb_get_urb(urb);
+                spin_lock_irqsave(&wa->xfer_list_lock, my_flags);
+                list_add_tail(&xfer->list_node, &wa->xfer_delayed_list);
+                spin_unlock_irqrestore(&wa->xfer_list_lock, my_flags);
+                queue_work(wusbd, &wa->xfer_work);
+        } else {
+                wa_urb_enqueue_b(xfer);
+        }
+        d_fnend(3, dev, "(wa %p ep %p urb %p [%d] gfp 0x%x) = 0\n",
+                wa, ep, urb, urb->transfer_buffer_length, gfp);
+        return 0;
+
+error_dequeued:
+        kfree(xfer);
+error_kmalloc:
+        d_fnend(3, dev, "(wa %p ep %p urb %p [%d] gfp 0x%x) = %d\n",
+                wa, ep, urb, urb->transfer_buffer_length, gfp, result);
+        return result;
+}
+EXPORT_SYMBOL_GPL(wa_urb_enqueue);
+
+/*
+ * Dequeue a URB and make sure uwb_hcd_giveback_urb() [completion
+ * handler] is called.
+ *
+ * Until a transfer goes successfully through wa_urb_enqueue() it
+ * needs to be dequeued with completion calling; when stuck in delayed
+ * or before wa_xfer_setup() is called, we need to do completion.
+ *
+ *  not setup  If there is no hcpriv yet, that means that that enqueue
+ *             still had no time to set the xfer up. Because
+ *             urb->status should be other than -EINPROGRESS,
+ *             enqueue() will catch that and bail out.
+ *
+ * If the transfer has gone through setup, we just need to clean it
+ * up. If it has gone through submit(), we have to abort it [with an
+ * asynch request] and then make sure we cancel each segment.
+ *
+ */
+int wa_urb_dequeue(struct wahc *wa, struct urb *urb)
+{
+        struct device *dev = &wa->usb_iface->dev;
+        unsigned long flags, flags2;
+        struct wa_xfer *xfer;
+        struct wa_seg *seg;
+        struct wa_rpipe *rpipe;
+        unsigned cnt;
+        unsigned rpipe_ready = 0;
+
+        d_fnstart(3, dev, "(wa %p, urb %p)\n", wa, urb);
+
+        d_printf(1, dev, "xfer %p urb %p: aborting\n", urb->hcpriv, urb);
+        xfer = urb->hcpriv;
+        if (xfer == NULL) {
+                /* NOthing setup yet enqueue will see urb->status !=
+                 * -EINPROGRESS (by hcd layer) and bail out with
+                 * error, no need to do completion
+                 */
+                BUG_ON(urb->status == -EINPROGRESS);
+                goto out;
+        }
+        spin_lock_irqsave(&xfer->lock, flags);
+        rpipe = xfer->ep->hcpriv;
+        /* Check the delayed list -> if there, release and complete */
+        spin_lock_irqsave(&wa->xfer_list_lock, flags2);
+        if (!list_empty(&xfer->list_node) && xfer->seg == NULL)
+                goto dequeue_delayed;
+        spin_unlock_irqrestore(&wa->xfer_list_lock, flags2);
+        if (xfer->seg == NULL)          /* still hasn't reached */
+                goto out_unlock;        /* setup(), enqueue_b() completes */
+        /* Ok, the xfer is in flight already, it's been setup and submitted.*/
+        __wa_xfer_abort(xfer);
+        for (cnt = 0; cnt < xfer->segs; cnt++) {
+                seg = xfer->seg[cnt];
+                switch (seg->status) {
+                case WA_SEG_NOTREADY:
+                case WA_SEG_READY:
+                        printk(KERN_ERR "xfer %p#%u: dequeue bad state %u\n",
+                               xfer, cnt, seg->status);
+                        WARN_ON(1);
+                        break;
+                case WA_SEG_DELAYED:
+                        seg->status = WA_SEG_ABORTED;
+                        spin_lock_irqsave(&rpipe->seg_lock, flags2);
+                        list_del(&seg->list_node);
+                        xfer->segs_done++;
+                        rpipe_ready = rpipe_avail_inc(rpipe);
+                        spin_unlock_irqrestore(&rpipe->seg_lock, flags2);
+                        break;
+                case WA_SEG_SUBMITTED:
+                        seg->status = WA_SEG_ABORTED;
+                        usb_unlink_urb(&seg->urb);
+                        if (xfer->is_inbound == 0)
+                                usb_unlink_urb(seg->dto_urb);
+                        xfer->segs_done++;
+                        rpipe_ready = rpipe_avail_inc(rpipe);
+                        break;
+                case WA_SEG_PENDING:
+                        seg->status = WA_SEG_ABORTED;
+                        xfer->segs_done++;
+                        rpipe_ready = rpipe_avail_inc(rpipe);
+                        break;
+                case WA_SEG_DTI_PENDING:
+                        usb_unlink_urb(wa->dti_urb);
+                        seg->status = WA_SEG_ABORTED;
+                        xfer->segs_done++;
+                        rpipe_ready = rpipe_avail_inc(rpipe);
+                        break;
+                case WA_SEG_DONE:
+                case WA_SEG_ERROR:
+                case WA_SEG_ABORTED:
+                        break;
+                }
+        }
+        xfer->result = urb->status;     /* -ENOENT or -ECONNRESET */
+        __wa_xfer_is_done(xfer);
+        spin_unlock_irqrestore(&xfer->lock, flags);
+        wa_xfer_completion(xfer);
+        if (rpipe_ready)
+                wa_xfer_delayed_run(rpipe);
+        d_fnend(3, dev, "(wa %p, urb %p) = 0\n", wa, urb);
+        return 0;
+
+out_unlock:
+        spin_unlock_irqrestore(&xfer->lock, flags);
+out:
+        d_fnend(3, dev, "(wa %p, urb %p) = 0\n", wa, urb);
+        return 0;
+
+dequeue_delayed:
+        list_del_init(&xfer->list_node);
+        spin_unlock_irqrestore(&wa->xfer_list_lock, flags2);
+        xfer->result = urb->status;
+        spin_unlock_irqrestore(&xfer->lock, flags);
+        wa_xfer_giveback(xfer);
+        usb_put_urb(urb);               /* we got a ref in enqueue() */
+        d_fnend(3, dev, "(wa %p, urb %p) = 0\n", wa, urb);
+        return 0;
+}
+EXPORT_SYMBOL_GPL(wa_urb_dequeue);
+
+/*
+ * Translation from WA status codes (WUSB1.0 Table 8.15) to errno
+ * codes
+ *
+ * Positive errno values are internal inconsistencies and should be
+ * flagged louder. Negative are to be passed up to the user in the
+ * normal way.
+ *
+ * @status: USB WA status code -- high two bits are stripped.
+ */
+static int wa_xfer_status_to_errno(u8 status)
+{
+        int errno;
+        u8 real_status = status;
+        static int xlat[] = {
+                [WA_XFER_STATUS_SUCCESS] =              0,
+                [WA_XFER_STATUS_HALTED] =               -EPIPE,
+                [WA_XFER_STATUS_DATA_BUFFER_ERROR] =    -ENOBUFS,
+                [WA_XFER_STATUS_BABBLE] =               -EOVERFLOW,
+                [WA_XFER_RESERVED] =                    EINVAL,
+                [WA_XFER_STATUS_NOT_FOUND] =            0,
+                [WA_XFER_STATUS_INSUFFICIENT_RESOURCE] = -ENOMEM,
+                [WA_XFER_STATUS_TRANSACTION_ERROR] =    -EILSEQ,
+                [WA_XFER_STATUS_ABORTED] =              -EINTR,
+                [WA_XFER_STATUS_RPIPE_NOT_READY] =      EINVAL,
+                [WA_XFER_INVALID_FORMAT] =              EINVAL,
+                [WA_XFER_UNEXPECTED_SEGMENT_NUMBER] =   EINVAL,
+                [WA_XFER_STATUS_RPIPE_TYPE_MISMATCH] =  EINVAL,
+        };
+        status &= 0x3f;
+
+        if (status == 0)
+                return 0;
+        if (status >= ARRAY_SIZE(xlat)) {
+                if (printk_ratelimit())
+                        printk(KERN_ERR "%s(): BUG? "
+                               "Unknown WA transfer status 0x%02x\n",
+                               __func__, real_status);
+                return -EINVAL;
+        }
+        errno = xlat[status];
+        if (unlikely(errno > 0)) {
+                if (printk_ratelimit())
+                        printk(KERN_ERR "%s(): BUG? "
+                               "Inconsistent WA status: 0x%02x\n",
+                               __func__, real_status);
+                errno = -errno;
+        }
+        return errno;
+}
+
+/*
+ * Process a xfer result completion message
+ *
+ * inbound transfers: need to schedule a DTI read
+ *
+ * FIXME: this functio needs to be broken up in parts
+ */
+static void wa_xfer_result_chew(struct wahc *wa, struct wa_xfer *xfer)
+{
+        int result;
+        struct device *dev = &wa->usb_iface->dev;
+        unsigned long flags;
+        u8 seg_idx;
+        struct wa_seg *seg;
+        struct wa_rpipe *rpipe;
+        struct wa_xfer_result *xfer_result = wa->xfer_result;
+        u8 done = 0;
+        u8 usb_status;
+        unsigned rpipe_ready = 0;
+
+        d_fnstart(3, dev, "(wa %p xfer %p)\n", wa, xfer);
+        spin_lock_irqsave(&xfer->lock, flags);
+        seg_idx = xfer_result->bTransferSegment & 0x7f;
+        if (unlikely(seg_idx >= xfer->segs))
+                goto error_bad_seg;
+        seg = xfer->seg[seg_idx];
+        rpipe = xfer->ep->hcpriv;
+        usb_status = xfer_result->bTransferStatus;
+        d_printf(2, dev, "xfer %p#%u: bTransferStatus 0x%02x (seg %u)\n",
+                 xfer, seg_idx, usb_status, seg->status);
+        if (seg->status == WA_SEG_ABORTED
+            || seg->status == WA_SEG_ERROR)     /* already handled */
+                goto segment_aborted;
+        if (seg->status == WA_SEG_SUBMITTED)    /* ops, got here */
+                seg->status = WA_SEG_PENDING;   /* before wa_seg{_dto}_cb() */
+        if (seg->status != WA_SEG_PENDING) {
+                if (printk_ratelimit())
+                        dev_err(dev, "xfer %p#%u: Bad segment state %u\n",
+                                xfer, seg_idx, seg->status);
+                seg->status = WA_SEG_PENDING;   /* workaround/"fix" it */
+        }
+        if (usb_status & 0x80) {
+                seg->result = wa_xfer_status_to_errno(usb_status);
+                dev_err(dev, "DTI: xfer %p#%u failed (0x%02x)\n",
+                        xfer, seg->index, usb_status);
+                goto error_complete;
+        }
+        /* FIXME: we ignore warnings, tally them for stats */
+        if (usb_status & 0x40)          /* Warning?... */
+                usb_status = 0;         /* ... pass */
+        if (xfer->is_inbound) { /* IN data phase: read to buffer */
+                seg->status = WA_SEG_DTI_PENDING;
+                BUG_ON(wa->buf_in_urb->status == -EINPROGRESS);
+                if (xfer->is_dma) {
+                        wa->buf_in_urb->transfer_dma =
+                                xfer->urb->transfer_dma
+                                + seg_idx * xfer->seg_size;
+                        wa->buf_in_urb->transfer_flags
+                                |= URB_NO_TRANSFER_DMA_MAP;
+                } else {
+                        wa->buf_in_urb->transfer_buffer =
+                                xfer->urb->transfer_buffer
+                                + seg_idx * xfer->seg_size;
+                        wa->buf_in_urb->transfer_flags
+                                &= ~URB_NO_TRANSFER_DMA_MAP;
+                }
+                wa->buf_in_urb->transfer_buffer_length =
+                        le32_to_cpu(xfer_result->dwTransferLength);
+                wa->buf_in_urb->context = seg;
+                result = usb_submit_urb(wa->buf_in_urb, GFP_ATOMIC);
+                if (result < 0)
+                        goto error_submit_buf_in;
+        } else {
+                /* OUT data phase, complete it -- */
+                seg->status = WA_SEG_DONE;
+                seg->result = le32_to_cpu(xfer_result->dwTransferLength);
+                xfer->segs_done++;
+                rpipe_ready = rpipe_avail_inc(rpipe);
+                done = __wa_xfer_is_done(xfer);
+        }
+        spin_unlock_irqrestore(&xfer->lock, flags);
+        if (done)
+                wa_xfer_completion(xfer);
+        if (rpipe_ready)
+                wa_xfer_delayed_run(rpipe);
+        d_fnend(3, dev, "(wa %p xfer %p) = void\n", wa, xfer);
+        return;
+
+
+error_submit_buf_in:
+        if (edc_inc(&wa->dti_edc, EDC_MAX_ERRORS, EDC_ERROR_TIMEFRAME)) {
+                dev_err(dev, "DTI: URB max acceptable errors "
+                        "exceeded, resetting device\n");
+                wa_reset_all(wa);
+        }
+        if (printk_ratelimit())
+                dev_err(dev, "xfer %p#%u: can't submit DTI data phase: %d\n",
+                        xfer, seg_idx, result);
+        seg->result = result;
+error_complete:
+        seg->status = WA_SEG_ERROR;
+        xfer->segs_done++;
+        rpipe_ready = rpipe_avail_inc(rpipe);
+        __wa_xfer_abort(xfer);
+        done = __wa_xfer_is_done(xfer);
+        spin_unlock_irqrestore(&xfer->lock, flags);
+        if (done)
+                wa_xfer_completion(xfer);
+        if (rpipe_ready)
+                wa_xfer_delayed_run(rpipe);
+        d_fnend(3, dev, "(wa %p xfer %p) = void [segment/DTI-submit error]\n",
+                wa, xfer);
+        return;
+
+
+error_bad_seg:
+        spin_unlock_irqrestore(&xfer->lock, flags);
+        wa_urb_dequeue(wa, xfer->urb);
+        if (printk_ratelimit())
+                dev_err(dev, "xfer %p#%u: bad segment\n", xfer, seg_idx);
+        if (edc_inc(&wa->dti_edc, EDC_MAX_ERRORS, EDC_ERROR_TIMEFRAME)) {
+                dev_err(dev, "DTI: URB max acceptable errors "
+                        "exceeded, resetting device\n");
+                wa_reset_all(wa);
+        }
+        d_fnend(3, dev, "(wa %p xfer %p) = void [bad seg]\n", wa, xfer);
+        return;
+
+
+segment_aborted:
+        /* nothing to do, as the aborter did the completion */
+        spin_unlock_irqrestore(&xfer->lock, flags);
+        d_fnend(3, dev, "(wa %p xfer %p) = void [segment aborted]\n",
+                wa, xfer);
+        return;
+
+}
+
+/*
+ * Callback for the IN data phase
+ *
+ * If succesful transition state; otherwise, take a note of the
+ * error, mark this segment done and try completion.
+ *
+ * Note we don't access until we are sure that the transfer hasn't
+ * been cancelled (ECONNRESET, ENOENT), which could mean that
+ * seg->xfer could be already gone.
+ */
+static void wa_buf_in_cb(struct urb *urb)
+{
+        struct wa_seg *seg = urb->context;
+        struct wa_xfer *xfer = seg->xfer;
+        struct wahc *wa;
+        struct device *dev;
+        struct wa_rpipe *rpipe;
+        unsigned rpipe_ready;
+        unsigned long flags;
+        u8 done = 0;
+
+        d_fnstart(3, NULL, "(urb %p [%d])\n", urb, urb->status);
+        switch (urb->status) {
+        case 0:
+                spin_lock_irqsave(&xfer->lock, flags);
+                wa = xfer->wa;
+                dev = &wa->usb_iface->dev;
+                rpipe = xfer->ep->hcpriv;
+                d_printf(2, dev, "xfer %p#%u: data in done (%zu bytes)\n",
+                           xfer, seg->index, (size_t)urb->actual_length);
+                seg->status = WA_SEG_DONE;
+                seg->result = urb->actual_length;
+                xfer->segs_done++;
+                rpipe_ready = rpipe_avail_inc(rpipe);
+                done = __wa_xfer_is_done(xfer);
+                spin_unlock_irqrestore(&xfer->lock, flags);
+                if (done)
+                        wa_xfer_completion(xfer);
+                if (rpipe_ready)
+                        wa_xfer_delayed_run(rpipe);
+                break;
+        case -ECONNRESET:       /* URB unlinked; no need to do anything */
+        case -ENOENT:           /* as it was done by the who unlinked us */
+                break;
+        default:                /* Other errors ... */
+                spin_lock_irqsave(&xfer->lock, flags);
+                wa = xfer->wa;
+                dev = &wa->usb_iface->dev;
+                rpipe = xfer->ep->hcpriv;
+                if (printk_ratelimit())
+                        dev_err(dev, "xfer %p#%u: data in error %d\n",
+                                xfer, seg->index, urb->status);
+                if (edc_inc(&wa->nep_edc, EDC_MAX_ERRORS,
+                            EDC_ERROR_TIMEFRAME)){
+                        dev_err(dev, "DTO: URB max acceptable errors "
+                                "exceeded, resetting device\n");
+                        wa_reset_all(wa);
+                }
+                seg->status = WA_SEG_ERROR;
+                seg->result = urb->status;
+                xfer->segs_done++;
+                rpipe_ready = rpipe_avail_inc(rpipe);
+                __wa_xfer_abort(xfer);
+                done = __wa_xfer_is_done(xfer);
+                spin_unlock_irqrestore(&xfer->lock, flags);
+                if (done)
+                        wa_xfer_completion(xfer);
+                if (rpipe_ready)
+                        wa_xfer_delayed_run(rpipe);
+        }
+        d_fnend(3, NULL, "(urb %p [%d]) = void\n", urb, urb->status);
+}
+
+/*
+ * Handle an incoming transfer result buffer
+ *
+ * Given a transfer result buffer, it completes the transfer (possibly
+ * scheduling and buffer in read) and then resubmits the DTI URB for a
+ * new transfer result read.
+ *
+ *
+ * The xfer_result DTI URB state machine
+ *
+ * States: OFF | RXR (Read-Xfer-Result) | RBI (Read-Buffer-In)
+ *
+ * We start in OFF mode, the first xfer_result notification [through
+ * wa_handle_notif_xfer()] moves us to RXR by posting the DTI-URB to
+ * read.
+ *
+ * We receive a buffer -- if it is not a xfer_result, we complain and
+ * repost the DTI-URB. If it is a xfer_result then do the xfer seg
+ * request accounting. If it is an IN segment, we move to RBI and post
+ * a BUF-IN-URB to the right buffer. The BUF-IN-URB callback will
+ * repost the DTI-URB and move to RXR state. if there was no IN
+ * segment, it will repost the DTI-URB.
+ *
+ * We go back to OFF when we detect a ENOENT or ESHUTDOWN (or too many
+ * errors) in the URBs.
+ */
+static void wa_xfer_result_cb(struct urb *urb)
+{
+        int result;
+        struct wahc *wa = urb->context;
+        struct device *dev = &wa->usb_iface->dev;
+        struct wa_xfer_result *xfer_result;
+        u32 xfer_id;
+        struct wa_xfer *xfer;
+        u8 usb_status;
+
+        d_fnstart(3, dev, "(%p)\n", wa);
+        BUG_ON(wa->dti_urb != urb);
+        switch (wa->dti_urb->status) {
+        case 0:
+                /* We have a xfer result buffer; check it */
+                d_printf(2, dev, "DTI: xfer result %d bytes at %p\n",
+                           urb->actual_length, urb->transfer_buffer);
+                d_dump(3, dev, urb->transfer_buffer, urb->actual_length);
+                if (wa->dti_urb->actual_length != sizeof(*xfer_result)) {
+                        dev_err(dev, "DTI Error: xfer result--bad size "
+                                "xfer result (%d bytes vs %zu needed)\n",
+                                urb->actual_length, sizeof(*xfer_result));
+                        break;
+                }
+                xfer_result = wa->xfer_result;
+                if (xfer_result->hdr.bLength != sizeof(*xfer_result)) {
+                        dev_err(dev, "DTI Error: xfer result--"
+                                "bad header length %u\n",
+                                xfer_result->hdr.bLength);
+                        break;
+                }
+                if (xfer_result->hdr.bNotifyType != WA_XFER_RESULT) {
+                        dev_err(dev, "DTI Error: xfer result--"
+                                "bad header type 0x%02x\n",
+                                xfer_result->hdr.bNotifyType);
+                        break;
+                }
+                usb_status = xfer_result->bTransferStatus & 0x3f;
+                if (usb_status == WA_XFER_STATUS_ABORTED
+                    || usb_status == WA_XFER_STATUS_NOT_FOUND)
+                        /* taken care of already */
+                        break;
+                xfer_id = xfer_result->dwTransferID;
+                xfer = wa_xfer_get_by_id(wa, xfer_id);
+                if (xfer == NULL) {
+                        /* FIXME: transaction might have been cancelled */
+                        dev_err(dev, "DTI Error: xfer result--"
+                                "unknown xfer 0x%08x (status 0x%02x)\n",
+                                xfer_id, usb_status);
+                        break;
+                }
+                wa_xfer_result_chew(wa, xfer);
+                wa_xfer_put(xfer);
+                break;
+        case -ENOENT:           /* (we killed the URB)...so, no broadcast */
+        case -ESHUTDOWN:        /* going away! */
+                dev_dbg(dev, "DTI: going down! %d\n", urb->status);
+                goto out;
+        default:
+                /* Unknown error */
+                if (edc_inc(&wa->dti_edc, EDC_MAX_ERRORS,
+                            EDC_ERROR_TIMEFRAME)) {
+                        dev_err(dev, "DTI: URB max acceptable errors "
+                                "exceeded, resetting device\n");
+                        wa_reset_all(wa);
+                        goto out;
+                }
+                if (printk_ratelimit())
+                        dev_err(dev, "DTI: URB error %d\n", urb->status);
+                break;
+        }
+        /* Resubmit the DTI URB */
+        result = usb_submit_urb(wa->dti_urb, GFP_ATOMIC);
+        if (result < 0) {
+                dev_err(dev, "DTI Error: Could not submit DTI URB (%d), "
+                        "resetting\n", result);
+                wa_reset_all(wa);
+        }
+out:
+        d_fnend(3, dev, "(%p) = void\n", wa);
+        return;
+}
+
+/*
+ * Transfer complete notification
+ *
+ * Called from the notif.c code. We get a notification on EP2 saying
+ * that some endpoint has some transfer result data available. We are
+ * about to read it.
+ *
+ * To speed up things, we always have a URB reading the DTI URB; we
+ * don't really set it up and start it until the first xfer complete
+ * notification arrives, which is what we do here.
+ *
+ * Follow up in wa_xfer_result_cb(), as that's where the whole state
+ * machine starts.
+ *
+ * So here we just initialize the DTI URB for reading transfer result
+ * notifications and also the buffer-in URB, for reading buffers. Then
+ * we just submit the DTI URB.
+ *
+ * @wa shall be referenced
+ */
+void wa_handle_notif_xfer(struct wahc *wa, struct wa_notif_hdr *notif_hdr)
+{
+        int result;
+        struct device *dev = &wa->usb_iface->dev;
+        struct wa_notif_xfer *notif_xfer;
+        const struct usb_endpoint_descriptor *dti_epd = wa->dti_epd;
+
+        d_fnstart(4, dev, "(%p, %p)\n", wa, notif_hdr);
+        notif_xfer = container_of(notif_hdr, struct wa_notif_xfer, hdr);
+        BUG_ON(notif_hdr->bNotifyType != WA_NOTIF_TRANSFER);
+
+        if ((0x80 | notif_xfer->bEndpoint) != dti_epd->bEndpointAddress) {
+                /* FIXME: hardcoded limitation, adapt */
+                dev_err(dev, "BUG: DTI ep is %u, not %u (hack me)\n",
+                        notif_xfer->bEndpoint, dti_epd->bEndpointAddress);
+                goto error;
+        }
+        if (wa->dti_urb != NULL)        /* DTI URB already started */
+                goto out;
+
+        wa->dti_urb = usb_alloc_urb(0, GFP_KERNEL);
+        if (wa->dti_urb == NULL) {
+                dev_err(dev, "Can't allocate DTI URB\n");
+                goto error_dti_urb_alloc;
+        }
+        usb_fill_bulk_urb(
+                wa->dti_urb, wa->usb_dev,
+                usb_rcvbulkpipe(wa->usb_dev, 0x80 | notif_xfer->bEndpoint),
+                wa->xfer_result, wa->xfer_result_size,
+                wa_xfer_result_cb, wa);
+
+        wa->buf_in_urb = usb_alloc_urb(0, GFP_KERNEL);
+        if (wa->buf_in_urb == NULL) {
+                dev_err(dev, "Can't allocate BUF-IN URB\n");
+                goto error_buf_in_urb_alloc;
+        }
+        usb_fill_bulk_urb(
+                wa->buf_in_urb, wa->usb_dev,
+                usb_rcvbulkpipe(wa->usb_dev, 0x80 | notif_xfer->bEndpoint),
+                NULL, 0, wa_buf_in_cb, wa);
+        result = usb_submit_urb(wa->dti_urb, GFP_KERNEL);
+        if (result < 0) {
+                dev_err(dev, "DTI Error: Could not submit DTI URB (%d), "
+                        "resetting\n", result);
+                goto error_dti_urb_submit;
+        }
+out:
+        d_fnend(4, dev, "(%p, %p) = void\n", wa, notif_hdr);
+        return;
+
+error_dti_urb_submit:
+        usb_put_urb(wa->buf_in_urb);
+error_buf_in_urb_alloc:
+        usb_put_urb(wa->dti_urb);
+        wa->dti_urb = NULL;
+error_dti_urb_alloc:
+error:
+        wa_reset_all(wa);
+        d_fnend(4, dev, "(%p, %p) = void\n", wa, notif_hdr);
+        return;
+}
diff --git a/drivers/usb/wusbcore/wusbhc.c b/drivers/usb/wusbcore/wusbhc.c
new file mode 100644
index 000000000000..07c63a31c799
--- /dev/null
+++ b/drivers/usb/wusbcore/wusbhc.c
@@ -0,0 +1,418 @@
+/*
+ * Wireless USB Host Controller
+ * sysfs glue, wusbcore module support and life cycle management
+ *
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * Creation/destruction of wusbhc is split in two parts; that that
+ * doesn't require the HCD to be added (wusbhc_{create,destroy}) and
+ * the one that requires (phase B, wusbhc_b_{create,destroy}).
+ *
+ * This is so because usb_add_hcd() will start the HC, and thus, all
+ * the HC specific stuff has to be already initialiazed (like sysfs
+ * thingies).
+ */
+#include <linux/device.h>
+#include <linux/module.h>
+#include "wusbhc.h"
+
+/**
+ * Extract the wusbhc that corresponds to a USB Host Controller class device
+ *
+ * WARNING! Apply only if @dev is that of a
+ *          wusbhc.usb_hcd.self->class_dev; otherwise, you loose.
+ */
+static struct wusbhc *usbhc_dev_to_wusbhc(struct device *dev)
+{
+        struct usb_bus *usb_bus = dev_get_drvdata(dev);
+        struct usb_hcd *usb_hcd = bus_to_hcd(usb_bus);
+        return usb_hcd_to_wusbhc(usb_hcd);
+}
+
+/*
+ * Show & store the current WUSB trust timeout
+ *
+ * We don't do locking--it is an 'atomic' value.
+ *
+ * The units that we store/show are always MILLISECONDS. However, the
+ * value of trust_timeout is jiffies.
+ */
+static ssize_t wusb_trust_timeout_show(struct device *dev,
+                                       struct device_attribute *attr, char *buf)
+{
+        struct wusbhc *wusbhc = usbhc_dev_to_wusbhc(dev);
+
+        return scnprintf(buf, PAGE_SIZE, "%u\n", wusbhc->trust_timeout);
+}
+
+static ssize_t wusb_trust_timeout_store(struct device *dev,
+                                        struct device_attribute *attr,
+                                        const char *buf, size_t size)
+{
+        struct wusbhc *wusbhc = usbhc_dev_to_wusbhc(dev);
+        ssize_t result = -ENOSYS;
+        unsigned trust_timeout;
+
+        result = sscanf(buf, "%u", &trust_timeout);
+        if (result != 1) {
+                result = -EINVAL;
+                goto out;
+        }
+        /* FIXME: maybe we should check for range validity? */
+        wusbhc->trust_timeout = trust_timeout;
+        cancel_delayed_work(&wusbhc->keep_alive_timer);
+        flush_workqueue(wusbd);
+        queue_delayed_work(wusbd, &wusbhc->keep_alive_timer,
+                           (trust_timeout * CONFIG_HZ)/1000/2);
+out:
+        return result < 0 ? result : size;
+}
+static DEVICE_ATTR(wusb_trust_timeout, 0644, wusb_trust_timeout_show,
+                                             wusb_trust_timeout_store);
+
+/*
+ * Show & store the current WUSB CHID
+ */
+static ssize_t wusb_chid_show(struct device *dev,
+                              struct device_attribute *attr, char *buf)
+{
+        struct wusbhc *wusbhc = usbhc_dev_to_wusbhc(dev);
+        ssize_t result = 0;
+
+        if (wusbhc->wuie_host_info != NULL)
+                result += ckhdid_printf(buf, PAGE_SIZE,
+                                        &wusbhc->wuie_host_info->CHID);
+        return result;
+}
+
+/*
+ * Store a new CHID
+ *
+ * This will (FIXME) trigger many changes.
+ *
+ * - Send an all zeros CHID and it will stop the controller
+ * - Send a non-zero CHID and it will start it
+ *   (unless it was started, it will just change the CHID,
+ *   diconnecting all devices first).
+ *
+ * So first we scan the MMC we are sent and then we act on it.  We
+ * read it in the same format as we print it, an ASCII string of 16
+ * hex bytes.
+ *
+ * See wusbhc_chid_set() for more info.
+ */
+static ssize_t wusb_chid_store(struct device *dev,
+                               struct device_attribute *attr,
+                               const char *buf, size_t size)
+{
+        struct wusbhc *wusbhc = usbhc_dev_to_wusbhc(dev);
+        struct wusb_ckhdid chid;
+        ssize_t result;
+
+        result = sscanf(buf,
+                        "%02hhx %02hhx %02hhx %02hhx "
+                        "%02hhx %02hhx %02hhx %02hhx "
+                        "%02hhx %02hhx %02hhx %02hhx "
+                        "%02hhx %02hhx %02hhx %02hhx\n",
+                        &chid.data[0] , &chid.data[1] ,
+                        &chid.data[2] , &chid.data[3] ,
+                        &chid.data[4] , &chid.data[5] ,
+                        &chid.data[6] , &chid.data[7] ,
+                        &chid.data[8] , &chid.data[9] ,
+                        &chid.data[10], &chid.data[11],
+                        &chid.data[12], &chid.data[13],
+                        &chid.data[14], &chid.data[15]);
+        if (result != 16) {
+                dev_err(dev, "Unrecognized CHID (need 16 8-bit hex digits): "
+                        "%d\n", (int)result);
+                return -EINVAL;
+        }
+        result = wusbhc_chid_set(wusbhc, &chid);
+        return result < 0 ? result : size;
+}
+static DEVICE_ATTR(wusb_chid, 0644, wusb_chid_show, wusb_chid_store);
+
+/* Group all the WUSBHC attributes */
+static struct attribute *wusbhc_attrs[] = {
+                &dev_attr_wusb_trust_timeout.attr,
+                &dev_attr_wusb_chid.attr,
+                NULL,
+};
+
+static struct attribute_group wusbhc_attr_group = {
+        .name = NULL,   /* we want them in the same directory */
+        .attrs = wusbhc_attrs,
+};
+
+/*
+ * Create a wusbhc instance
+ *
+ * NOTEs:
+ *
+ *  - assumes *wusbhc has been zeroed and wusbhc->usb_hcd has been
+ *    initialized but not added.
+ *
+ *  - fill out ports_max, mmcies_max and mmcie_{add,rm} before calling.
+ *
+ *  - fill out wusbhc->uwb_rc and refcount it before calling
+ *  - fill out the wusbhc->sec_modes array
+ */
+int wusbhc_create(struct wusbhc *wusbhc)
+{
+        int result = 0;
+
+        wusbhc->trust_timeout = WUSB_TRUST_TIMEOUT_MS;
+        mutex_init(&wusbhc->mutex);
+        result = wusbhc_mmcie_create(wusbhc);
+        if (result < 0)
+                goto error_mmcie_create;
+        result = wusbhc_devconnect_create(wusbhc);
+        if (result < 0)
+                goto error_devconnect_create;
+        result = wusbhc_rh_create(wusbhc);
+        if (result < 0)
+                goto error_rh_create;
+        result = wusbhc_sec_create(wusbhc);
+        if (result < 0)
+                goto error_sec_create;
+        return 0;
+
+error_sec_create:
+        wusbhc_rh_destroy(wusbhc);
+error_rh_create:
+        wusbhc_devconnect_destroy(wusbhc);
+error_devconnect_create:
+        wusbhc_mmcie_destroy(wusbhc);
+error_mmcie_create:
+        return result;
+}
+EXPORT_SYMBOL_GPL(wusbhc_create);
+
+static inline struct kobject *wusbhc_kobj(struct wusbhc *wusbhc)
+{
+        return &wusbhc->usb_hcd.self.controller->kobj;
+}
+
+/*
+ * Phase B of a wusbhc instance creation
+ *
+ * Creates fields that depend on wusbhc->usb_hcd having been
+ * added. This is where we create the sysfs files in
+ * /sys/class/usb_host/usb_hostX/.
+ *
+ * NOTE: Assumes wusbhc->usb_hcd has been already added by the upper
+ *       layer (hwahc or whci)
+ */
+int wusbhc_b_create(struct wusbhc *wusbhc)
+{
+        int result = 0;
+        struct device *dev = wusbhc->usb_hcd.self.controller;
+
+        result = sysfs_create_group(wusbhc_kobj(wusbhc), &wusbhc_attr_group);
+        if (result < 0) {
+                dev_err(dev, "Cannot register WUSBHC attributes: %d\n", result);
+                goto error_create_attr_group;
+        }
+
+        result = wusbhc_pal_register(wusbhc);
+        if (result < 0)
+                goto error_pal_register;
+        return 0;
+
+error_pal_register:
+        sysfs_remove_group(wusbhc_kobj(wusbhc), &wusbhc_attr_group);
+error_create_attr_group:
+        return result;
+}
+EXPORT_SYMBOL_GPL(wusbhc_b_create);
+
+void wusbhc_b_destroy(struct wusbhc *wusbhc)
+{
+        wusbhc_pal_unregister(wusbhc);
+        sysfs_remove_group(wusbhc_kobj(wusbhc), &wusbhc_attr_group);
+}
+EXPORT_SYMBOL_GPL(wusbhc_b_destroy);
+
+void wusbhc_destroy(struct wusbhc *wusbhc)
+{
+        wusbhc_sec_destroy(wusbhc);
+        wusbhc_rh_destroy(wusbhc);
+        wusbhc_devconnect_destroy(wusbhc);
+        wusbhc_mmcie_destroy(wusbhc);
+}
+EXPORT_SYMBOL_GPL(wusbhc_destroy);
+
+struct workqueue_struct *wusbd;
+EXPORT_SYMBOL_GPL(wusbd);
+
+/*
+ * WUSB Cluster ID allocation map
+ *
+ * Each WUSB bus in a channel is identified with a Cluster Id in the
+ * unauth address pace (WUSB1.0[4.3]). We take the range 0xe0 to 0xff
+ * (that's space for 31 WUSB controllers, as 0xff can't be taken). We
+ * start taking from 0xff, 0xfe, 0xfd... (hence the += or -= 0xff).
+ *
+ * For each one we taken, we pin it in the bitap
+ */
+#define CLUSTER_IDS 32
+static DECLARE_BITMAP(wusb_cluster_id_table, CLUSTER_IDS);
+static DEFINE_SPINLOCK(wusb_cluster_ids_lock);
+
+/*
+ * Get a WUSB Cluster ID
+ *
+ * Need to release with wusb_cluster_id_put() when done w/ it.
+ */
+/* FIXME: coordinate with the choose_addres() from the USB stack */
+/* we want to leave the top of the 128 range for cluster addresses and
+ * the bottom for device addresses (as we map them one on one with
+ * ports). */
+u8 wusb_cluster_id_get(void)
+{
+        u8 id;
+        spin_lock(&wusb_cluster_ids_lock);
+        id = find_first_zero_bit(wusb_cluster_id_table, CLUSTER_IDS);
+        if (id > CLUSTER_IDS) {
+                id = 0;
+                goto out;
+        }
+        set_bit(id, wusb_cluster_id_table);
+        id = (u8) 0xff - id;
+out:
+        spin_unlock(&wusb_cluster_ids_lock);
+        return id;
+
+}
+EXPORT_SYMBOL_GPL(wusb_cluster_id_get);
+
+/*
+ * Release a WUSB Cluster ID
+ *
+ * Obtained it with wusb_cluster_id_get()
+ */
+void wusb_cluster_id_put(u8 id)
+{
+        id = 0xff - id;
+        BUG_ON(id >= CLUSTER_IDS);
+        spin_lock(&wusb_cluster_ids_lock);
+        WARN_ON(!test_bit(id, wusb_cluster_id_table));
+        clear_bit(id, wusb_cluster_id_table);
+        spin_unlock(&wusb_cluster_ids_lock);
+}
+EXPORT_SYMBOL_GPL(wusb_cluster_id_put);
+
+/**
+ * wusbhc_giveback_urb - return an URB to the USB core
+ * @wusbhc: the host controller the URB is from.
+ * @urb:    the URB.
+ * @status: the URB's status.
+ *
+ * Return an URB to the USB core doing some additional WUSB specific
+ * processing.
+ *
+ *  - After a successful transfer, update the trust timeout timestamp
+ *    for the WUSB device.
+ *
+ *  - [WUSB] sections 4.13 and 7.5.1 specifies the stop retrasmittion
+ *    condition for the WCONNECTACK_IE is that the host has observed
+ *    the associated device responding to a control transfer.
+ */
+void wusbhc_giveback_urb(struct wusbhc *wusbhc, struct urb *urb, int status)
+{
+        struct wusb_dev *wusb_dev = __wusb_dev_get_by_usb_dev(wusbhc, urb->dev);
+
+        if (status == 0) {
+                wusb_dev->entry_ts = jiffies;
+
+                /* wusbhc_devconnect_acked() can't be called from from
+                   atomic context so defer it to a work queue. */
+                if (!list_empty(&wusb_dev->cack_node))
+                        queue_work(wusbd, &wusb_dev->devconnect_acked_work);
+        }
+
+        usb_hcd_giveback_urb(&wusbhc->usb_hcd, urb, status);
+}
+EXPORT_SYMBOL_GPL(wusbhc_giveback_urb);
+
+/**
+ * wusbhc_reset_all - reset the HC hardware
+ * @wusbhc: the host controller to reset.
+ *
+ * Request a full hardware reset of the chip.  This will also reset
+ * the radio controller and any other PALs.
+ */
+void wusbhc_reset_all(struct wusbhc *wusbhc)
+{
+        uwb_rc_reset_all(wusbhc->uwb_rc);
+}
+EXPORT_SYMBOL_GPL(wusbhc_reset_all);
+
+static struct notifier_block wusb_usb_notifier = {
+        .notifier_call = wusb_usb_ncb,
+        .priority = INT_MAX     /* Need to be called first of all */
+};
+
+static int __init wusbcore_init(void)
+{
+        int result;
+        result = wusb_crypto_init();
+        if (result < 0)
+                goto error_crypto_init;
+        /* WQ is singlethread because we need to serialize notifications */
+        wusbd = create_singlethread_workqueue("wusbd");
+        if (wusbd == NULL) {
+                result = -ENOMEM;
+                printk(KERN_ERR "WUSB-core: Cannot create wusbd workqueue\n");
+                goto error_wusbd_create;
+        }
+        usb_register_notify(&wusb_usb_notifier);
+        bitmap_zero(wusb_cluster_id_table, CLUSTER_IDS);
+        set_bit(0, wusb_cluster_id_table);      /* reserve Cluster ID 0xff */
+        return 0;
+
+error_wusbd_create:
+        wusb_crypto_exit();
+error_crypto_init:
+        return result;
+
+}
+module_init(wusbcore_init);
+
+static void __exit wusbcore_exit(void)
+{
+        clear_bit(0, wusb_cluster_id_table);
+        if (!bitmap_empty(wusb_cluster_id_table, CLUSTER_IDS)) {
+                char buf[256];
+                bitmap_scnprintf(buf, sizeof(buf), wusb_cluster_id_table,
+                                 CLUSTER_IDS);
+                printk(KERN_ERR "BUG: WUSB Cluster IDs not released "
+                       "on exit: %s\n", buf);
+                WARN_ON(1);
+        }
+        usb_unregister_notify(&wusb_usb_notifier);
+        destroy_workqueue(wusbd);
+        wusb_crypto_exit();
+}
+module_exit(wusbcore_exit);
+
+MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
+MODULE_DESCRIPTION("Wireless USB core");
+MODULE_LICENSE("GPL");
diff --git a/drivers/usb/wusbcore/wusbhc.h b/drivers/usb/wusbcore/wusbhc.h
new file mode 100644
index 000000000000..d0c132434f1b
--- /dev/null
+++ b/drivers/usb/wusbcore/wusbhc.h
@@ -0,0 +1,495 @@
+/*
+ * Wireless USB Host Controller
+ * Common infrastructure for WHCI and HWA WUSB-HC drivers
+ *
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * This driver implements parts common to all Wireless USB Host
+ * Controllers (struct wusbhc, embedding a struct usb_hcd) and is used
+ * by:
+ *
+ *   - hwahc: HWA, USB-dongle that implements a Wireless USB host
+ *     controller, (Wireless USB 1.0 Host-Wire-Adapter specification).
+ *
+ *   - whci: WHCI, a PCI card with a wireless host controller
+ *     (Wireless Host Controller Interface 1.0 specification).
+ *
+ * Check out the Design-overview.txt file in the source documentation
+ * for other details on the implementation.
+ *
+ * Main blocks:
+ *
+ *  rh         Root Hub emulation (part of the HCD glue)
+ *
+ *  devconnect Handle all the issues related to device connection,
+ *             authentication, disconnection, timeout, reseting,
+ *             keepalives, etc.
+ *
+ *  mmc        MMC IE broadcasting handling
+ *
+ * A host controller driver just initializes its stuff and as part of
+ * that, creates a 'struct wusbhc' instance that handles all the
+ * common WUSB mechanisms. Links in the function ops that are specific
+ * to it and then registers the host controller. Ready to run.
+ */
+
+#ifndef __WUSBHC_H__
+#define __WUSBHC_H__
+
+#include <linux/usb.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/kref.h>
+#include <linux/workqueue.h>
+/* FIXME: Yes, I know: BAD--it's not my fault the USB HC iface is not
+ *        public */
+#include <linux/../../drivers/usb/core/hcd.h>
+#include <linux/uwb.h>
+#include <linux/usb/wusb.h>
+
+
+/**
+ * Wireless USB device
+ *
+ * Describe a WUSB device connected to the cluster. This struct
+ * belongs to the 'struct wusb_port' it is attached to and it is
+ * responsible for putting and clearing the pointer to it.
+ *
+ * Note this "complements" the 'struct usb_device' that the usb_hcd
+ * keeps for each connected USB device. However, it extends some
+ * information that is not available (there is no hcpriv ptr in it!)
+ * *and* most importantly, it's life cycle is different. It is created
+ * as soon as we get a DN_Connect (connect request notification) from
+ * the device through the WUSB host controller; the USB stack doesn't
+ * create the device until we authenticate it. FIXME: this will
+ * change.
+ *
+ * @bos:    This is allocated when the BOS descriptors are read from
+ *          the device and freed upon the wusb_dev struct dying.
+ * @wusb_cap_descr: points into @bos, and has been verified to be size
+ *                  safe.
+ */
+struct wusb_dev {
+        struct kref refcnt;
+        struct wusbhc *wusbhc;
+        struct list_head cack_node;     /* Connect-Ack list */
+        u8 port_idx;
+        u8 addr;
+        u8 beacon_type:4;
+        struct usb_encryption_descriptor ccm1_etd;
+        struct wusb_ckhdid cdid;
+        unsigned long entry_ts;
+        struct usb_bos_descriptor *bos;
+        struct usb_wireless_cap_descriptor *wusb_cap_descr;
+        struct uwb_mas_bm availability;
+        struct work_struct devconnect_acked_work;
+        struct urb *set_gtk_urb;
+        struct usb_ctrlrequest *set_gtk_req;
+        struct usb_device *usb_dev;
+};
+
+#define WUSB_DEV_ADDR_UNAUTH 0x80
+
+static inline void wusb_dev_init(struct wusb_dev *wusb_dev)
+{
+        kref_init(&wusb_dev->refcnt);
+        /* no need to init the cack_node */
+}
+
+extern void wusb_dev_destroy(struct kref *_wusb_dev);
+
+static inline struct wusb_dev *wusb_dev_get(struct wusb_dev *wusb_dev)
+{
+        kref_get(&wusb_dev->refcnt);
+        return wusb_dev;
+}
+
+static inline void wusb_dev_put(struct wusb_dev *wusb_dev)
+{
+        kref_put(&wusb_dev->refcnt, wusb_dev_destroy);
+}
+
+/**
+ * Wireless USB Host Controlller root hub "fake" ports
+ * (state and device information)
+ *
+ * Wireless USB is wireless, so there are no ports; but we
+ * fake'em. Each RC can connect a max of devices at the same time
+ * (given in the Wireless Adapter descriptor, bNumPorts or WHCI's
+ * caps), referred to in wusbhc->ports_max.
+ *
+ * See rh.c for more information.
+ *
+ * The @status and @change use the same bits as in USB2.0[11.24.2.7],
+ * so we don't have to do much when getting the port's status.
+ *
+ * WUSB1.0[7.1], USB2.0[11.24.2.7.1,fig 11-10],
+ * include/linux/usb_ch9.h (#define USB_PORT_STAT_*)
+ */
+struct wusb_port {
+        u16 status;
+        u16 change;
+        struct wusb_dev *wusb_dev;      /* connected device's info */
+        unsigned reset_count;
+        u32 ptk_tkid;
+};
+
+/**
+ * WUSB Host Controller specifics
+ *
+ * All fields that are common to all Wireless USB controller types
+ * (HWA and WHCI) are grouped here. Host Controller
+ * functions/operations that only deal with general Wireless USB HC
+ * issues use this data type to refer to the host.
+ *
+ * @usb_hcd        Instantiation of a USB host controller
+ *                 (initialized by upper layer [HWA=HC or WHCI].
+ *
+ * @dev            Device that implements this; initialized by the
+ *                 upper layer (HWA-HC, WHCI...); this device should
+ *                 have a refcount.
+ *
+ * @trust_timeout  After this time without hearing for device
+ *                 activity, we consider the device gone and we have to
+ *                 re-authenticate.
+ *
+ *                 Can be accessed w/o locking--however, read to a
+ *                 local variable then use.
+ *
+ * @chid           WUSB Cluster Host ID: this is supposed to be a
+ *                 unique value that doesn't change across reboots (so
+ *                 that your devices do not require re-association).
+ *
+ *                 Read/Write protected by @mutex
+ *
+ * @dev_info       This array has ports_max elements. It is used to
+ *                 give the HC information about the WUSB devices (see
+ *                 'struct wusb_dev_info').
+ *
+ *                 For HWA we need to allocate it in heap; for WHCI it
+ *                 needs to be permanently mapped, so we keep it for
+ *                 both and make it easy. Call wusbhc->dev_info_set()
+ *                 to update an entry.
+ *
+ * @ports_max      Number of simultaneous device connections (fake
+ *                 ports) this HC will take. Read-only.
+ *
+ * @port           Array of port status for each fake root port. Guaranteed to
+ *                 always be the same lenght during device existence
+ *                 [this allows for some unlocked but referenced reading].
+ *
+ * @mmcies_max     Max number of Information Elements this HC can send
+ *                 in its MMC. Read-only.
+ *
+ * @mmcie_add      HC specific operation (WHCI or HWA) for adding an
+ *                 MMCIE.
+ *
+ * @mmcie_rm       HC specific operation (WHCI or HWA) for removing an
+ *                 MMCIE.
+ *
+ * @enc_types      Array which describes the encryptions methods
+ *                 supported by the host as described in WUSB1.0 --
+ *                 one entry per supported method. As of WUSB1.0 there
+ *                 is only four methods, we make space for eight just in
+ *                 case they decide to add some more (and pray they do
+ *                 it in sequential order). if 'enc_types[enc_method]
+ *                 != 0', then it is supported by the host. enc_method
+ *                 is USB_ENC_TYPE*.
+ *
+ * @set_ptk:       Set the PTK and enable encryption for a device. Or, if
+ *                 the supplied key is NULL, disable encryption for that
+ *                 device.
+ *
+ * @set_gtk:       Set the GTK to be used for all future broadcast packets
+ *                 (i.e., MMCs).  With some hardware, setting the GTK may start
+ *                 MMC transmission.
+ *
+ * NOTE:
+ *
+ *  - If wusb_dev->usb_dev is not NULL, then usb_dev is valid
+ *    (wusb_dev has a refcount on it). Likewise, if usb_dev->wusb_dev
+ *    is not NULL, usb_dev->wusb_dev is valid (usb_dev keeps a
+ *    refcount on it).
+ *
+ *    Most of the times when you need to use it, it will be non-NULL,
+ *    so there is no real need to check for it (wusb_dev will
+ *    dissapear before usb_dev).
+ *
+ *  - The following fields need to be filled out before calling
+ *    wusbhc_create(): ports_max, mmcies_max, mmcie_{add,rm}.
+ *
+ *  - there is no wusbhc_init() method, we do everything in
+ *    wusbhc_create().
+ *
+ *  - Creation is done in two phases, wusbhc_create() and
+ *    wusbhc_create_b(); b are the parts that need to be called after
+ *    calling usb_hcd_add(&wusbhc->usb_hcd).
+ */
+struct wusbhc {
+        struct usb_hcd usb_hcd;         /* HAS TO BE 1st */
+        struct device *dev;
+        struct uwb_rc *uwb_rc;
+        struct uwb_pal pal;
+
+        unsigned trust_timeout;                 /* in jiffies */
+        struct wuie_host_info *wuie_host_info;  /* Includes CHID */
+
+        struct mutex mutex;                     /* locks everything else */
+        u16 cluster_id;                         /* Wireless USB Cluster ID */
+        struct wusb_port *port;                 /* Fake port status handling */
+        struct wusb_dev_info *dev_info;         /* for Set Device Info mgmt */
+        u8 ports_max;
+        unsigned active:1;                      /* currently xmit'ing MMCs */
+        struct wuie_keep_alive keep_alive_ie;   /* protected by mutex */
+        struct delayed_work keep_alive_timer;
+        struct list_head cack_list;             /* Connect acknowledging */
+        size_t cack_count;                      /* protected by 'mutex' */
+        struct wuie_connect_ack cack_ie;
+        struct uwb_rsv *rsv;            /* cluster bandwidth reservation */
+
+        struct mutex mmcie_mutex;               /* MMC WUIE handling */
+        struct wuie_hdr **mmcie;                /* WUIE array */
+        u8 mmcies_max;
+        /* FIXME: make wusbhc_ops? */
+        int (*start)(struct wusbhc *wusbhc);
+        void (*stop)(struct wusbhc *wusbhc);
+        int (*mmcie_add)(struct wusbhc *wusbhc, u8 interval, u8 repeat_cnt,
+                         u8 handle, struct wuie_hdr *wuie);
+        int (*mmcie_rm)(struct wusbhc *wusbhc, u8 handle);
+        int (*dev_info_set)(struct wusbhc *, struct wusb_dev *wusb_dev);
+        int (*bwa_set)(struct wusbhc *wusbhc, s8 stream_index,
+                       const struct uwb_mas_bm *);
+        int (*set_ptk)(struct wusbhc *wusbhc, u8 port_idx,
+                       u32 tkid, const void *key, size_t key_size);
+        int (*set_gtk)(struct wusbhc *wusbhc,
+                       u32 tkid, const void *key, size_t key_size);
+        int (*set_num_dnts)(struct wusbhc *wusbhc, u8 interval, u8 slots);
+
+        struct {
+                struct usb_key_descriptor descr;
+                u8 data[16];                            /* GTK key data */
+        } __attribute__((packed)) gtk;
+        u8 gtk_index;
+        u32 gtk_tkid;
+        struct work_struct gtk_rekey_done_work;
+        int pending_set_gtks;
+
+        struct usb_encryption_descriptor *ccm1_etd;
+};
+
+#define usb_hcd_to_wusbhc(u) container_of((u), struct wusbhc, usb_hcd)
+
+
+extern int wusbhc_create(struct wusbhc *);
+extern int wusbhc_b_create(struct wusbhc *);
+extern void wusbhc_b_destroy(struct wusbhc *);
+extern void wusbhc_destroy(struct wusbhc *);
+extern int wusb_dev_sysfs_add(struct wusbhc *, struct usb_device *,
+                              struct wusb_dev *);
+extern void wusb_dev_sysfs_rm(struct wusb_dev *);
+extern int wusbhc_sec_create(struct wusbhc *);
+extern int wusbhc_sec_start(struct wusbhc *);
+extern void wusbhc_sec_stop(struct wusbhc *);
+extern void wusbhc_sec_destroy(struct wusbhc *);
+extern void wusbhc_giveback_urb(struct wusbhc *wusbhc, struct urb *urb,
+                                int status);
+void wusbhc_reset_all(struct wusbhc *wusbhc);
+
+int wusbhc_pal_register(struct wusbhc *wusbhc);
+void wusbhc_pal_unregister(struct wusbhc *wusbhc);
+
+/*
+ * Return @usb_dev's @usb_hcd (properly referenced) or NULL if gone
+ *
+ * @usb_dev: USB device, UNLOCKED and referenced (or otherwise, safe ptr)
+ *
+ * This is a safe assumption as @usb_dev->bus is referenced all the
+ * time during the @usb_dev life cycle.
+ */
+static inline struct usb_hcd *usb_hcd_get_by_usb_dev(struct usb_device *usb_dev)
+{
+        struct usb_hcd *usb_hcd;
+        usb_hcd = container_of(usb_dev->bus, struct usb_hcd, self);
+        return usb_get_hcd(usb_hcd);
+}
+
+/*
+ * Increment the reference count on a wusbhc.
+ *
+ * @wusbhc's life cycle is identical to that of the underlying usb_hcd.
+ */
+static inline struct wusbhc *wusbhc_get(struct wusbhc *wusbhc)
+{
+        return usb_get_hcd(&wusbhc->usb_hcd) ? wusbhc : NULL;
+}
+
+/*
+ * Return the wusbhc associated to a @usb_dev
+ *
+ * @usb_dev: USB device, UNLOCKED and referenced (or otherwise, safe ptr)
+ *
+ * @returns: wusbhc for @usb_dev; NULL if the @usb_dev is being torn down.
+ *           WARNING: referenced at the usb_hcd level, unlocked
+ *
+ * FIXME: move offline
+ */
+static inline struct wusbhc *wusbhc_get_by_usb_dev(struct usb_device *usb_dev)
+{
+        struct wusbhc *wusbhc = NULL;
+        struct usb_hcd *usb_hcd;
+        if (usb_dev->devnum > 1 && !usb_dev->wusb) {
+                /* but root hubs */
+                dev_err(&usb_dev->dev, "devnum %d wusb %d\n", usb_dev->devnum,
+                        usb_dev->wusb);
+                BUG_ON(usb_dev->devnum > 1 && !usb_dev->wusb);
+        }
+        usb_hcd = usb_hcd_get_by_usb_dev(usb_dev);
+        if (usb_hcd == NULL)
+                return NULL;
+        BUG_ON(usb_hcd->wireless == 0);
+        return wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+}
+
+
+static inline void wusbhc_put(struct wusbhc *wusbhc)
+{
+        usb_put_hcd(&wusbhc->usb_hcd);
+}
+
+int wusbhc_start(struct wusbhc *wusbhc, const struct wusb_ckhdid *chid);
+void wusbhc_stop(struct wusbhc *wusbhc);
+extern int wusbhc_chid_set(struct wusbhc *, const struct wusb_ckhdid *);
+
+/* Device connect handling */
+extern int wusbhc_devconnect_create(struct wusbhc *);
+extern void wusbhc_devconnect_destroy(struct wusbhc *);
+extern int wusbhc_devconnect_start(struct wusbhc *wusbhc,
+                                   const struct wusb_ckhdid *chid);
+extern void wusbhc_devconnect_stop(struct wusbhc *wusbhc);
+extern int wusbhc_devconnect_auth(struct wusbhc *, u8);
+extern void wusbhc_handle_dn(struct wusbhc *, u8 srcaddr,
+                             struct wusb_dn_hdr *dn_hdr, size_t size);
+extern int wusbhc_dev_reset(struct wusbhc *wusbhc, u8 port);
+extern void __wusbhc_dev_disable(struct wusbhc *wusbhc, u8 port);
+extern int wusb_usb_ncb(struct notifier_block *nb, unsigned long val,
+                        void *priv);
+extern int wusb_set_dev_addr(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev,
+                             u8 addr);
+
+/* Wireless USB fake Root Hub methods */
+extern int wusbhc_rh_create(struct wusbhc *);
+extern void wusbhc_rh_destroy(struct wusbhc *);
+
+extern int wusbhc_rh_status_data(struct usb_hcd *, char *);
+extern int wusbhc_rh_control(struct usb_hcd *, u16, u16, u16, char *, u16);
+extern int wusbhc_rh_suspend(struct usb_hcd *);
+extern int wusbhc_rh_resume(struct usb_hcd *);
+extern int wusbhc_rh_start_port_reset(struct usb_hcd *, unsigned);
+
+/* MMC handling */
+extern int wusbhc_mmcie_create(struct wusbhc *);
+extern void wusbhc_mmcie_destroy(struct wusbhc *);
+extern int wusbhc_mmcie_set(struct wusbhc *, u8 interval, u8 repeat_cnt,
+                            struct wuie_hdr *);
+extern void wusbhc_mmcie_rm(struct wusbhc *, struct wuie_hdr *);
+
+/* Bandwidth reservation */
+int wusbhc_rsv_establish(struct wusbhc *wusbhc);
+void wusbhc_rsv_terminate(struct wusbhc *wusbhc);
+
+/*
+ * I've always said
+ * I wanted a wedding in a church...
+ *
+ * but lately I've been thinking about
+ * the Botanical Gardens.
+ *
+ * We could do it by the tulips.
+ * It'll be beautiful
+ *
+ * --Security!
+ */
+extern int wusb_dev_sec_add(struct wusbhc *, struct usb_device *,
+                                struct wusb_dev *);
+extern void wusb_dev_sec_rm(struct wusb_dev *) ;
+extern int wusb_dev_4way_handshake(struct wusbhc *, struct wusb_dev *,
+                                   struct wusb_ckhdid *ck);
+void wusbhc_gtk_rekey(struct wusbhc *wusbhc);
+
+
+/* WUSB Cluster ID handling */
+extern u8 wusb_cluster_id_get(void);
+extern void wusb_cluster_id_put(u8);
+
+/*
+ * wusb_port_by_idx - return the port associated to a zero-based port index
+ *
+ * NOTE: valid without locking as long as wusbhc is referenced (as the
+ *       number of ports doesn't change). The data pointed to has to
+ *       be verified though :)
+ */
+static inline struct wusb_port *wusb_port_by_idx(struct wusbhc *wusbhc,
+                                                 u8 port_idx)
+{
+        return &wusbhc->port[port_idx];
+}
+
+/*
+ * wusb_port_no_to_idx - Convert port number (per usb_dev->portnum) to
+ * a port_idx.
+ *
+ * USB stack USB ports are 1 based!!
+ *
+ * NOTE: only valid for WUSB devices!!!
+ */
+static inline u8 wusb_port_no_to_idx(u8 port_no)
+{
+        return port_no - 1;
+}
+
+extern struct wusb_dev *__wusb_dev_get_by_usb_dev(struct wusbhc *,
+                                                  struct usb_device *);
+
+/*
+ * Return a referenced wusb_dev given a @usb_dev
+ *
+ * Returns NULL if the usb_dev is being torn down.
+ *
+ * FIXME: move offline
+ */
+static inline
+struct wusb_dev *wusb_dev_get_by_usb_dev(struct usb_device *usb_dev)
+{
+        struct wusbhc *wusbhc;
+        struct wusb_dev *wusb_dev;
+        wusbhc = wusbhc_get_by_usb_dev(usb_dev);
+        if (wusbhc == NULL)
+                return NULL;
+        mutex_lock(&wusbhc->mutex);
+        wusb_dev = __wusb_dev_get_by_usb_dev(wusbhc, usb_dev);
+        mutex_unlock(&wusbhc->mutex);
+        wusbhc_put(wusbhc);
+        return wusb_dev;
+}
+
+/* Misc */
+
+extern struct workqueue_struct *wusbd;
+#endif /* #ifndef __WUSBHC_H__ */
diff --git a/drivers/uwb/Kconfig b/drivers/uwb/Kconfig
new file mode 100644
index 000000000000..ca783127af36
--- /dev/null
+++ b/drivers/uwb/Kconfig
@@ -0,0 +1,90 @@
+#
+# UWB device configuration
+#
+
+menuconfig UWB
+        tristate "Ultra Wideband devices (EXPERIMENTAL)"
+        depends on EXPERIMENTAL
+        depends on PCI
+        default n
+        help
+          UWB is a high-bandwidth, low-power, point-to-point radio
+          technology using a wide spectrum (3.1-10.6GHz). It is
+          optimized for in-room use (480Mbps at 2 meters, 110Mbps at
+          10m). It serves as the transport layer for other protocols,
+          such as Wireless USB (WUSB), IP (WLP) and upcoming
+          Bluetooth and 1394
+
+          The topology is peer to peer; however, higher level
+          protocols (such as WUSB) might impose a master/slave
+          relationship.
+
+          Say Y here if your computer has UWB radio controllers (USB or PCI)
+          based. You will need to enable the radio controllers
+          below.  It is ok to select all of them, no harm done.
+
+          For more help check the UWB and WUSB related files in
+          <file:Documentation/usb/>.
+
+          To compile the UWB stack as a module, choose M here.
+
+if UWB
+
+config UWB_HWA
+        tristate "UWB Radio Control driver for WUSB-compliant USB dongles (HWA)"
+        depends on USB
+        help
+          This driver enables the radio controller for HWA USB
+          devices. HWA stands for Host Wire Adapter, and it is a UWB
+          Radio Controller connected to your system via USB. Most of
+          them come with a Wireless USB host controller also.
+
+          To compile this driver select Y (built in) or M (module). It
+          is safe to select any even if you do not have the hardware.
+
+config UWB_WHCI
+        tristate "UWB Radio Control driver for WHCI-compliant cards"
+        depends on PCI
+        help
+          This driver enables the radio controller for WHCI cards.
+
+          WHCI is an specification developed by Intel
+          (http://www.intel.com/technology/comms/wusb/whci.htm) much
+          in the spirit of USB's EHCI, but for UWB and Wireless USB
+          radio/host controllers connected via memmory mapping (eg:
+          PCI). Most of these cards come also with a Wireless USB host
+          controller.
+
+          To compile this driver select Y (built in) or M (module). It
+          is safe to select any even if you do not have the hardware.
+
+config UWB_WLP
+        tristate "Support WiMedia Link Protocol (Ethernet/IP over UWB)"
+        depends on UWB && NET
+        help
+          This is a common library for drivers that implement
+          networking over UWB.
+
+config UWB_I1480U
+        tristate "Support for Intel Wireless UWB Link 1480 HWA"
+        depends on UWB_HWA
+        select FW_LOADER
+        help
+         This driver enables support for the i1480 when connected via
+         USB. It consists of a firmware uploader that will enable it
+         to behave as an HWA device.
+
+         To compile this driver select Y (built in) or M (module). It
+         is safe to select any even if you do not have the hardware.
+
+config UWB_I1480U_WLP
+        tristate "Support for Intel Wireless UWB Link 1480 HWA's WLP interface"
+        depends on UWB_I1480U &&  UWB_WLP && NET
+        help
+         This driver enables WLP support for the i1480 when connected via
+         USB. WLP is the WiMedia Link Protocol, or IP over UWB.
+
+         To compile this driver select Y (built in) or M (module). It
+         is safe to select any even if you don't have the hardware.
+
+endif # UWB
diff --git a/drivers/uwb/Makefile b/drivers/uwb/Makefile
new file mode 100644
index 000000000000..257e6908304c
--- /dev/null
+++ b/drivers/uwb/Makefile
@@ -0,0 +1,29 @@
+obj-$(CONFIG_UWB)               += uwb.o
+obj-$(CONFIG_UWB_WLP)           += wlp/
+obj-$(CONFIG_UWB_WHCI)          += umc.o whci.o whc-rc.o
+obj-$(CONFIG_UWB_HWA)           += hwa-rc.o
+obj-$(CONFIG_UWB_I1480U)        += i1480/
+
+uwb-objs :=             \
+        address.o       \
+        beacon.o        \
+        driver.o        \
+        drp.o           \
+        drp-avail.o     \
+        drp-ie.o        \
+        est.o           \
+        ie.o            \
+        lc-dev.o        \
+        lc-rc.o         \
+        neh.o           \
+        pal.o           \
+        reset.o         \
+        rsv.o           \
+        scan.o          \
+        uwb-debug.o     \
+        uwbd.o
+
+umc-objs :=             \
+        umc-bus.o       \
+        umc-dev.o       \
+        umc-drv.o
diff --git a/drivers/uwb/address.c b/drivers/uwb/address.c
new file mode 100644
index 000000000000..1664ae5f1706
--- /dev/null
+++ b/drivers/uwb/address.c
@@ -0,0 +1,374 @@
+/*
+ * Ultra Wide Band
+ * Address management
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ */
+
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/random.h>
+#include <linux/etherdevice.h>
+#include <linux/uwb/debug.h>
+#include "uwb-internal.h"
+
+
+/** Device Address Management command */
+struct uwb_rc_cmd_dev_addr_mgmt {
+        struct uwb_rccb rccb;
+        u8 bmOperationType;
+        u8 baAddr[6];
+} __attribute__((packed));
+
+
+/**
+ * Low level command for setting/getting UWB radio's addresses
+ *
+ * @hwarc:      HWA Radio Control interface instance
+ * @bmOperationType:
+ *              Set/get, MAC/DEV (see WUSB1.0[8.6.2.2])
+ * @baAddr:     address buffer--assumed to have enough data to hold
+ *              the address type requested.
+ * @reply:      Pointer to reply buffer (can be stack allocated)
+ * @returns:    0 if ok, < 0 errno code on error.
+ *
+ * @cmd has to be allocated because USB cannot grok USB or vmalloc
+ * buffers depending on your combination of host architecture.
+ */
+static
+int uwb_rc_dev_addr_mgmt(struct uwb_rc *rc,
+                         u8 bmOperationType, const u8 *baAddr,
+                         struct uwb_rc_evt_dev_addr_mgmt *reply)
+{
+        int result;
+        struct uwb_rc_cmd_dev_addr_mgmt *cmd;
+
+        result = -ENOMEM;
+        cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+        if (cmd == NULL)
+                goto error_kzalloc;
+        cmd->rccb.bCommandType = UWB_RC_CET_GENERAL;
+        cmd->rccb.wCommand = cpu_to_le16(UWB_RC_CMD_DEV_ADDR_MGMT);
+        cmd->bmOperationType = bmOperationType;
+        if (baAddr) {
+                size_t size = 0;
+                switch (bmOperationType >> 1) {
+                case 0: size = 2; break;
+                case 1: size = 6; break;
+                default: BUG();
+                }
+                memcpy(cmd->baAddr, baAddr, size);
+        }
+        reply->rceb.bEventType = UWB_RC_CET_GENERAL;
+        reply->rceb.wEvent = UWB_RC_CMD_DEV_ADDR_MGMT;
+        result = uwb_rc_cmd(rc, "DEV-ADDR-MGMT",
+                            &cmd->rccb, sizeof(*cmd),
+                            &reply->rceb, sizeof(*reply));
+        if (result < 0)
+                goto error_cmd;
+        if (result < sizeof(*reply)) {
+                dev_err(&rc->uwb_dev.dev,
+                        "DEV-ADDR-MGMT: not enough data replied: "
+                        "%d vs %zu bytes needed\n", result, sizeof(*reply));
+                result = -ENOMSG;
+        } else if (reply->bResultCode != UWB_RC_RES_SUCCESS) {
+                dev_err(&rc->uwb_dev.dev,
+                        "DEV-ADDR-MGMT: command execution failed: %s (%d)\n",
+                        uwb_rc_strerror(reply->bResultCode),
+                        reply->bResultCode);
+                result = -EIO;
+        } else
+                result = 0;
+error_cmd:
+        kfree(cmd);
+error_kzalloc:
+        return result;
+}
+
+
+/**
+ * Set the UWB RC MAC or device address.
+ *
+ * @rc:      UWB Radio Controller
+ * @_addr:   Pointer to address to write [assumed to be either a
+ *           'struct uwb_mac_addr *' or a 'struct uwb_dev_addr *'].
+ * @type:    Type of address to set (UWB_ADDR_DEV or UWB_ADDR_MAC).
+ * @returns: 0 if ok, < 0 errno code on error.
+ *
+ * Some anal retentivity here: even if both 'struct
+ * uwb_{dev,mac}_addr' have the actual byte array in the same offset
+ * and I could just pass _addr to hwarc_cmd_dev_addr_mgmt(), I prefer
+ * to use some syntatic sugar in case someday we decide to change the
+ * format of the structs. The compiler will optimize it out anyway.
+ */
+static int uwb_rc_addr_set(struct uwb_rc *rc,
+                    const void *_addr, enum uwb_addr_type type)
+{
+        int result;
+        u8 bmOperationType = 0x1;               /* Set address */
+        const struct uwb_dev_addr *dev_addr = _addr;
+        const struct uwb_mac_addr *mac_addr = _addr;
+        struct uwb_rc_evt_dev_addr_mgmt reply;
+        const u8 *baAddr;
+
+        result = -EINVAL;
+        switch (type) {
+        case UWB_ADDR_DEV:
+                baAddr = dev_addr->data;
+                break;
+        case UWB_ADDR_MAC:
+                baAddr = mac_addr->data;
+                bmOperationType |= 0x2;
+                break;
+        default:
+                return result;
+        }
+        return uwb_rc_dev_addr_mgmt(rc, bmOperationType, baAddr, &reply);
+}
+
+
+/**
+ * Get the UWB radio's MAC or device address.
+ *
+ * @rc:      UWB Radio Controller
+ * @_addr:   Where to write the address data [assumed to be either a
+ *           'struct uwb_mac_addr *' or a 'struct uwb_dev_addr *'].
+ * @type:    Type of address to get (UWB_ADDR_DEV or UWB_ADDR_MAC).
+ * @returns: 0 if ok (and *_addr set), < 0 errno code on error.
+ *
+ * See comment in uwb_rc_addr_set() about anal retentivity in the
+ * type handling of the address variables.
+ */
+static int uwb_rc_addr_get(struct uwb_rc *rc,
+                    void *_addr, enum uwb_addr_type type)
+{
+        int result;
+        u8 bmOperationType = 0x0;               /* Get address */
+        struct uwb_rc_evt_dev_addr_mgmt evt;
+        struct uwb_dev_addr *dev_addr = _addr;
+        struct uwb_mac_addr *mac_addr = _addr;
+        u8 *baAddr;
+
+        result = -EINVAL;
+        switch (type) {
+        case UWB_ADDR_DEV:
+                baAddr = dev_addr->data;
+                break;
+        case UWB_ADDR_MAC:
+                bmOperationType |= 0x2;
+                baAddr = mac_addr->data;
+                break;
+        default:
+                return result;
+        }
+        result = uwb_rc_dev_addr_mgmt(rc, bmOperationType, baAddr, &evt);
+        if (result == 0)
+                switch (type) {
+                case UWB_ADDR_DEV:
+                        memcpy(&dev_addr->data, evt.baAddr,
+                               sizeof(dev_addr->data));
+                        break;
+                case UWB_ADDR_MAC:
+                        memcpy(&mac_addr->data, evt.baAddr,
+                               sizeof(mac_addr->data));
+                        break;
+                default:                /* shut gcc up */
+                        BUG();
+                }
+        return result;
+}
+
+
+/** Get @rc's MAC address to @addr */
+int uwb_rc_mac_addr_get(struct uwb_rc *rc,
+                        struct uwb_mac_addr *addr) {
+        return uwb_rc_addr_get(rc, addr, UWB_ADDR_MAC);
+}
+EXPORT_SYMBOL_GPL(uwb_rc_mac_addr_get);
+
+
+/** Get @rc's device address to @addr */
+int uwb_rc_dev_addr_get(struct uwb_rc *rc,
+                        struct uwb_dev_addr *addr) {
+        return uwb_rc_addr_get(rc, addr, UWB_ADDR_DEV);
+}
+EXPORT_SYMBOL_GPL(uwb_rc_dev_addr_get);
+
+
+/** Set @rc's address to @addr */
+int uwb_rc_mac_addr_set(struct uwb_rc *rc,
+                        const struct uwb_mac_addr *addr)
+{
+        int result = -EINVAL;
+        mutex_lock(&rc->uwb_dev.mutex);
+        result = uwb_rc_addr_set(rc, addr, UWB_ADDR_MAC);
+        mutex_unlock(&rc->uwb_dev.mutex);
+        return result;
+}
+
+
+/** Set @rc's address to @addr */
+int uwb_rc_dev_addr_set(struct uwb_rc *rc,
+                        const struct uwb_dev_addr *addr)
+{
+        int result = -EINVAL;
+        mutex_lock(&rc->uwb_dev.mutex);
+        result = uwb_rc_addr_set(rc, addr, UWB_ADDR_DEV);
+        rc->uwb_dev.dev_addr = *addr;
+        mutex_unlock(&rc->uwb_dev.mutex);
+        return result;
+}
+
+/* Returns !0 if given address is already assigned to device. */
+int __uwb_mac_addr_assigned_check(struct device *dev, void *_addr)
+{
+        struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+        struct uwb_mac_addr *addr = _addr;
+
+        if (!uwb_mac_addr_cmp(addr, &uwb_dev->mac_addr))
+                return !0;
+        return 0;
+}
+
+/* Returns !0 if given address is already assigned to device. */
+int __uwb_dev_addr_assigned_check(struct device *dev, void *_addr)
+{
+        struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+        struct uwb_dev_addr *addr = _addr;
+        if (!uwb_dev_addr_cmp(addr, &uwb_dev->dev_addr))
+                return !0;
+        return 0;
+}
+
+/**
+ * uwb_dev_addr_assign - assigned a generated DevAddr to a radio controller
+ * @rc:      the (local) radio controller device requiring a new DevAddr
+ *
+ * A new DevAddr is required when:
+ *    - first setting up a radio controller
+ *    - if the hardware reports a DevAddr conflict
+ *
+ * The DevAddr is randomly generated in the generated DevAddr range
+ * [0x100, 0xfeff]. The number of devices in a beacon group is limited
+ * by mMaxBPLength (96) so this address space will never be exhausted.
+ *
+ * [ECMA-368] 17.1.1, 17.16.
+ */
+int uwb_rc_dev_addr_assign(struct uwb_rc *rc)
+{
+        struct uwb_dev_addr new_addr;
+
+        do {
+                get_random_bytes(new_addr.data, sizeof(new_addr.data));
+        } while (new_addr.data[0] == 0x00 || new_addr.data[0] == 0xff
+                 || __uwb_dev_addr_assigned(rc, &new_addr));
+
+        return uwb_rc_dev_addr_set(rc, &new_addr);
+}
+
+/**
+ * uwbd_evt_handle_rc_dev_addr_conflict - handle a DEV_ADDR_CONFLICT event
+ * @evt: the DEV_ADDR_CONFLICT notification from the radio controller
+ *
+ * A new (non-conflicting) DevAddr is assigned to the radio controller.
+ *
+ * [ECMA-368] 17.1.1.1.
+ */
+int uwbd_evt_handle_rc_dev_addr_conflict(struct uwb_event *evt)
+{
+        struct uwb_rc *rc = evt->rc;
+
+        return uwb_rc_dev_addr_assign(rc);
+}
+
+/*
+ * Print the 48-bit EUI MAC address of the radio controller when
+ * reading /sys/class/uwb_rc/XX/mac_address
+ */
+static ssize_t uwb_rc_mac_addr_show(struct device *dev,
+                                    struct device_attribute *attr, char *buf)
+{
+        struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+        struct uwb_rc *rc = uwb_dev->rc;
+        struct uwb_mac_addr addr;
+        ssize_t result;
+
+        mutex_lock(&rc->uwb_dev.mutex);
+        result = uwb_rc_addr_get(rc, &addr, UWB_ADDR_MAC);
+        mutex_unlock(&rc->uwb_dev.mutex);
+        if (result >= 0) {
+                result = uwb_mac_addr_print(buf, UWB_ADDR_STRSIZE, &addr);
+                buf[result++] = '\n';
+        }
+        return result;
+}
+
+/*
+ * Parse a 48 bit address written to /sys/class/uwb_rc/XX/mac_address
+ * and if correct, set it.
+ */
+static ssize_t uwb_rc_mac_addr_store(struct device *dev,
+                                     struct device_attribute *attr,
+                                     const char *buf, size_t size)
+{
+        struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+        struct uwb_rc *rc = uwb_dev->rc;
+        struct uwb_mac_addr addr;
+        ssize_t result;
+
+        result = sscanf(buf, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx\n",
+                        &addr.data[0], &addr.data[1], &addr.data[2],
+                        &addr.data[3], &addr.data[4], &addr.data[5]);
+        if (result != 6) {
+                result = -EINVAL;
+                goto out;
+        }
+        if (is_multicast_ether_addr(addr.data)) {
+                dev_err(&rc->uwb_dev.dev, "refusing to set multicast "
+                        "MAC address %s\n", buf);
+                result = -EINVAL;
+                goto out;
+        }
+        result = uwb_rc_mac_addr_set(rc, &addr);
+        if (result == 0)
+                rc->uwb_dev.mac_addr = addr;
+out:
+        return result < 0 ? result : size;
+}
+DEVICE_ATTR(mac_address, S_IRUGO | S_IWUSR, uwb_rc_mac_addr_show, uwb_rc_mac_addr_store);
+
+/** Print @addr to @buf, @return bytes written */
+size_t __uwb_addr_print(char *buf, size_t buf_size, const unsigned char *addr,
+                        int type)
+{
+        size_t result;
+        if (type)
+                result = scnprintf(buf, buf_size,
+                                  "%02x:%02x:%02x:%02x:%02x:%02x",
+                                  addr[0], addr[1], addr[2],
+                                  addr[3], addr[4], addr[5]);
+        else
+                result = scnprintf(buf, buf_size, "%02x:%02x",
+                                  addr[1], addr[0]);
+        return result;
+}
+EXPORT_SYMBOL_GPL(__uwb_addr_print);
diff --git a/drivers/uwb/beacon.c b/drivers/uwb/beacon.c
new file mode 100644
index 000000000000..46b18eec5026
--- /dev/null
+++ b/drivers/uwb/beacon.c
@@ -0,0 +1,642 @@
+/*
+ * Ultra Wide Band
+ * Beacon management
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/kdev_t.h>
+#include "uwb-internal.h"
+
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+/** Start Beaconing command structure */
+struct uwb_rc_cmd_start_beacon {
+        struct uwb_rccb rccb;
+        __le16 wBPSTOffset;
+        u8 bChannelNumber;
+} __attribute__((packed));
+
+
+static int uwb_rc_start_beacon(struct uwb_rc *rc, u16 bpst_offset, u8 channel)
+{
+        int result;
+        struct uwb_rc_cmd_start_beacon *cmd;
+        struct uwb_rc_evt_confirm reply;
+
+        cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+        if (cmd == NULL)
+                return -ENOMEM;
+        cmd->rccb.bCommandType = UWB_RC_CET_GENERAL;
+        cmd->rccb.wCommand = cpu_to_le16(UWB_RC_CMD_START_BEACON);
+        cmd->wBPSTOffset = cpu_to_le16(bpst_offset);
+        cmd->bChannelNumber = channel;
+        reply.rceb.bEventType = UWB_RC_CET_GENERAL;
+        reply.rceb.wEvent = UWB_RC_CMD_START_BEACON;
+        result = uwb_rc_cmd(rc, "START-BEACON", &cmd->rccb, sizeof(*cmd),
+                            &reply.rceb, sizeof(reply));
+        if (result < 0)
+                goto error_cmd;
+        if (reply.bResultCode != UWB_RC_RES_SUCCESS) {
+                dev_err(&rc->uwb_dev.dev,
+                        "START-BEACON: command execution failed: %s (%d)\n",
+                        uwb_rc_strerror(reply.bResultCode), reply.bResultCode);
+                result = -EIO;
+        }
+error_cmd:
+        kfree(cmd);
+        return result;
+}
+
+static int uwb_rc_stop_beacon(struct uwb_rc *rc)
+{
+        int result;
+        struct uwb_rccb *cmd;
+        struct uwb_rc_evt_confirm reply;
+
+        cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+        if (cmd == NULL)
+                return -ENOMEM;
+        cmd->bCommandType = UWB_RC_CET_GENERAL;
+        cmd->wCommand = cpu_to_le16(UWB_RC_CMD_STOP_BEACON);
+        reply.rceb.bEventType = UWB_RC_CET_GENERAL;
+        reply.rceb.wEvent = UWB_RC_CMD_STOP_BEACON;
+        result = uwb_rc_cmd(rc, "STOP-BEACON", cmd, sizeof(*cmd),
+                            &reply.rceb, sizeof(reply));
+        if (result < 0)
+                goto error_cmd;
+        if (reply.bResultCode != UWB_RC_RES_SUCCESS) {
+                dev_err(&rc->uwb_dev.dev,
+                        "STOP-BEACON: command execution failed: %s (%d)\n",
+                        uwb_rc_strerror(reply.bResultCode), reply.bResultCode);
+                result = -EIO;
+        }
+error_cmd:
+        kfree(cmd);
+        return result;
+}
+
+/*
+ * Start/stop beacons
+ *
+ * @rc:          UWB Radio Controller to operate on
+ * @channel:     UWB channel on which to beacon (WUSB[table
+ *               5-12]). If -1, stop beaconing.
+ * @bpst_offset: Beacon Period Start Time offset; FIXME-do zero
+ *
+ * According to WHCI 0.95 [4.13.6] the driver will only receive the RCEB
+ * of a SET IE command after the device sent the first beacon that includes
+ * the IEs specified in the SET IE command. So, after we start beaconing we
+ * check if there is anything in the IE cache and call the SET IE command
+ * if needed.
+ */
+int uwb_rc_beacon(struct uwb_rc *rc, int channel, unsigned bpst_offset)
+{
+        int result;
+        struct device *dev = &rc->uwb_dev.dev;
+
+        mutex_lock(&rc->uwb_dev.mutex);
+        if (channel < 0)
+                channel = -1;
+        if (channel == -1)
+                result = uwb_rc_stop_beacon(rc);
+        else {
+                /* channel >= 0...dah */
+                result = uwb_rc_start_beacon(rc, bpst_offset, channel);
+                if (result < 0)
+                        goto out_up;
+                if (le16_to_cpu(rc->ies->wIELength) > 0) {
+                        result = uwb_rc_set_ie(rc, rc->ies);
+                        if (result < 0) {
+                                dev_err(dev, "Cannot set new IE on device: "
+                                        "%d\n", result);
+                                result = uwb_rc_stop_beacon(rc);
+                                channel = -1;
+                                bpst_offset = 0;
+                        } else
+                                result = 0;
+                }
+        }
+
+        if (result < 0)
+                goto out_up;
+        rc->beaconing = channel;
+
+        uwb_notify(rc, NULL, uwb_bg_joined(rc) ? UWB_NOTIF_BG_JOIN : UWB_NOTIF_BG_LEAVE);
+
+out_up:
+        mutex_unlock(&rc->uwb_dev.mutex);
+        return result;
+}
+
+/*
+ * Beacon cache
+ *
+ * The purpose of this is to speed up the lookup of becon information
+ * when a new beacon arrives. The UWB Daemon uses it also to keep a
+ * tab of which devices are in radio distance and which not. When a
+ * device's beacon stays present for more than a certain amount of
+ * time, it is considered a new, usable device. When a beacon ceases
+ * to be received for a certain amount of time, it is considered that
+ * the device is gone.
+ *
+ * FIXME: use an allocator for the entries
+ * FIXME: use something faster for search than a list
+ */
+
+struct uwb_beca uwb_beca = {
+        .list = LIST_HEAD_INIT(uwb_beca.list),
+        .mutex = __MUTEX_INITIALIZER(uwb_beca.mutex)
+};
+
+
+void uwb_bce_kfree(struct kref *_bce)
+{
+        struct uwb_beca_e *bce = container_of(_bce, struct uwb_beca_e, refcnt);
+
+        kfree(bce->be);
+        kfree(bce);
+}
+
+
+/* Find a beacon by dev addr in the cache */
+static
+struct uwb_beca_e *__uwb_beca_find_bydev(const struct uwb_dev_addr *dev_addr)
+{
+        struct uwb_beca_e *bce, *next;
+        list_for_each_entry_safe(bce, next, &uwb_beca.list, node) {
+                d_printf(6, NULL, "looking for addr %02x:%02x in %02x:%02x\n",
+                         dev_addr->data[0], dev_addr->data[1],
+                         bce->dev_addr.data[0], bce->dev_addr.data[1]);
+                if (!memcmp(&bce->dev_addr, dev_addr, sizeof(bce->dev_addr)))
+                        goto out;
+        }
+        bce = NULL;
+out:
+        return bce;
+}
+
+/* Find a beacon by dev addr in the cache */
+static
+struct uwb_beca_e *__uwb_beca_find_bymac(const struct uwb_mac_addr *mac_addr)
+{
+        struct uwb_beca_e *bce, *next;
+        list_for_each_entry_safe(bce, next, &uwb_beca.list, node) {
+                if (!memcmp(bce->mac_addr, mac_addr->data,
+                            sizeof(struct uwb_mac_addr)))
+                        goto out;
+        }
+        bce = NULL;
+out:
+        return bce;
+}
+
+/**
+ * uwb_dev_get_by_devaddr - get a UWB device with a specific DevAddr
+ * @rc:      the radio controller that saw the device
+ * @devaddr: DevAddr of the UWB device to find
+ *
+ * There may be more than one matching device (in the case of a
+ * DevAddr conflict), but only the first one is returned.
+ */
+struct uwb_dev *uwb_dev_get_by_devaddr(struct uwb_rc *rc,
+                                       const struct uwb_dev_addr *devaddr)
+{
+        struct uwb_dev *found = NULL;
+        struct uwb_beca_e *bce;
+
+        mutex_lock(&uwb_beca.mutex);
+        bce = __uwb_beca_find_bydev(devaddr);
+        if (bce)
+                found = uwb_dev_try_get(rc, bce->uwb_dev);
+        mutex_unlock(&uwb_beca.mutex);
+
+        return found;
+}
+
+/**
+ * uwb_dev_get_by_macaddr - get a UWB device with a specific EUI-48
+ * @rc:      the radio controller that saw the device
+ * @devaddr: EUI-48 of the UWB device to find
+ */
+struct uwb_dev *uwb_dev_get_by_macaddr(struct uwb_rc *rc,
+                                       const struct uwb_mac_addr *macaddr)
+{
+        struct uwb_dev *found = NULL;
+        struct uwb_beca_e *bce;
+
+        mutex_lock(&uwb_beca.mutex);
+        bce = __uwb_beca_find_bymac(macaddr);
+        if (bce)
+                found = uwb_dev_try_get(rc, bce->uwb_dev);
+        mutex_unlock(&uwb_beca.mutex);
+
+        return found;
+}
+
+/* Initialize a beacon cache entry */
+static void uwb_beca_e_init(struct uwb_beca_e *bce)
+{
+        mutex_init(&bce->mutex);
+        kref_init(&bce->refcnt);
+        stats_init(&bce->lqe_stats);
+        stats_init(&bce->rssi_stats);
+}
+
+/*
+ * Add a beacon to the cache
+ *
+ * @be:         Beacon event information
+ * @bf:         Beacon frame (part of b, really)
+ * @ts_jiffies: Timestamp (in jiffies) when the beacon was received
+ */
+struct uwb_beca_e *__uwb_beca_add(struct uwb_rc_evt_beacon *be,
+                                  struct uwb_beacon_frame *bf,
+                                  unsigned long ts_jiffies)
+{
+        struct uwb_beca_e *bce;
+
+        bce = kzalloc(sizeof(*bce), GFP_KERNEL);
+        if (bce == NULL)
+                return NULL;
+        uwb_beca_e_init(bce);
+        bce->ts_jiffies = ts_jiffies;
+        bce->uwb_dev = NULL;
+        list_add(&bce->node, &uwb_beca.list);
+        return bce;
+}
+
+/*
+ * Wipe out beacon entries that became stale
+ *
+ * Remove associated devicest too.
+ */
+void uwb_beca_purge(void)
+{
+        struct uwb_beca_e *bce, *next;
+        unsigned long expires;
+
+        mutex_lock(&uwb_beca.mutex);
+        list_for_each_entry_safe(bce, next, &uwb_beca.list, node) {
+                expires = bce->ts_jiffies + msecs_to_jiffies(beacon_timeout_ms);
+                if (time_after(jiffies, expires)) {
+                        uwbd_dev_offair(bce);
+                        list_del(&bce->node);
+                        uwb_bce_put(bce);
+                }
+        }
+        mutex_unlock(&uwb_beca.mutex);
+}
+
+/* Clean up the whole beacon cache. Called on shutdown */
+void uwb_beca_release(void)
+{
+        struct uwb_beca_e *bce, *next;
+        mutex_lock(&uwb_beca.mutex);
+        list_for_each_entry_safe(bce, next, &uwb_beca.list, node) {
+                list_del(&bce->node);
+                uwb_bce_put(bce);
+        }
+        mutex_unlock(&uwb_beca.mutex);
+}
+
+static void uwb_beacon_print(struct uwb_rc *rc, struct uwb_rc_evt_beacon *be,
+                             struct uwb_beacon_frame *bf)
+{
+        char macbuf[UWB_ADDR_STRSIZE];
+        char devbuf[UWB_ADDR_STRSIZE];
+        char dstbuf[UWB_ADDR_STRSIZE];
+
+        uwb_mac_addr_print(macbuf, sizeof(macbuf), &bf->Device_Identifier);
+        uwb_dev_addr_print(devbuf, sizeof(devbuf), &bf->hdr.SrcAddr);
+        uwb_dev_addr_print(dstbuf, sizeof(dstbuf), &bf->hdr.DestAddr);
+        dev_info(&rc->uwb_dev.dev,
+                 "BEACON from %s to %s (ch%u offset %u slot %u MAC %s)\n",
+                 devbuf, dstbuf, be->bChannelNumber, be->wBPSTOffset,
+                 bf->Beacon_Slot_Number, macbuf);
+}
+
+/*
+ * @bce: beacon cache entry, referenced
+ */
+ssize_t uwb_bce_print_IEs(struct uwb_dev *uwb_dev, struct uwb_beca_e *bce,
+                          char *buf, size_t size)
+{
+        ssize_t result = 0;
+        struct uwb_rc_evt_beacon *be;
+        struct uwb_beacon_frame *bf;
+        struct uwb_buf_ctx ctx = {
+                .buf = buf,
+                .bytes = 0,
+                .size = size
+        };
+
+        mutex_lock(&bce->mutex);
+        be = bce->be;
+        if (be == NULL)
+                goto out;
+        bf = (void *) be->BeaconInfo;
+        uwb_ie_for_each(uwb_dev, uwb_ie_dump_hex, &ctx,
+                        bf->IEData, be->wBeaconInfoLength - sizeof(*bf));
+        result = ctx.bytes;
+out:
+        mutex_unlock(&bce->mutex);
+        return result;
+}
+
+/*
+ * Verify that the beacon event, frame and IEs are ok
+ */
+static int uwb_verify_beacon(struct uwb_rc *rc, struct uwb_event *evt,
+                             struct uwb_rc_evt_beacon *be)
+{
+        int result = -EINVAL;
+        struct uwb_beacon_frame *bf;
+        struct device *dev = &rc->uwb_dev.dev;
+
+        /* Is there enough data to decode a beacon frame? */
+        if (evt->notif.size < sizeof(*be) + sizeof(*bf)) {
+                dev_err(dev, "BEACON event: Not enough data to decode "
+                        "(%zu vs %zu bytes needed)\n", evt->notif.size,
+                        sizeof(*be) + sizeof(*bf));
+                goto error;
+        }
+        /* FIXME: make sure beacon frame IEs are fine and that the whole thing
+         * is consistent */
+        result = 0;
+error:
+        return result;
+}
+
+/*
+ * Handle UWB_RC_EVT_BEACON events
+ *
+ * We check the beacon cache to see how the received beacon fares. If
+ * is there already we refresh the timestamp. If not we create a new
+ * entry.
+ *
+ * According to the WHCI and WUSB specs, only one beacon frame is
+ * allowed per notification block, so we don't bother about scanning
+ * for more.
+ */
+int uwbd_evt_handle_rc_beacon(struct uwb_event *evt)
+{
+        int result = -EINVAL;
+        struct uwb_rc *rc;
+        struct uwb_rc_evt_beacon *be;
+        struct uwb_beacon_frame *bf;
+        struct uwb_beca_e *bce;
+        unsigned long last_ts;
+
+        rc = evt->rc;
+        be = container_of(evt->notif.rceb, struct uwb_rc_evt_beacon, rceb);
+        result = uwb_verify_beacon(rc, evt, be);
+        if (result < 0)
+                return result;
+
+        /* FIXME: handle alien beacons. */
+        if (be->bBeaconType == UWB_RC_BEACON_TYPE_OL_ALIEN ||
+            be->bBeaconType == UWB_RC_BEACON_TYPE_NOL_ALIEN) {
+                return -ENOSYS;
+        }
+
+        bf = (struct uwb_beacon_frame *) be->BeaconInfo;
+
+        /*
+         * Drop beacons from devices with a NULL EUI-48 -- they cannot
+         * be uniquely identified.
+         *
+         * It's expected that these will all be WUSB devices and they
+         * have a WUSB specific connection method so ignoring them
+         * here shouldn't be a problem.
+         */
+        if (uwb_mac_addr_bcast(&bf->Device_Identifier))
+                return 0;
+
+        mutex_lock(&uwb_beca.mutex);
+        bce = __uwb_beca_find_bymac(&bf->Device_Identifier);
+        if (bce == NULL) {
+                /* Not in there, a new device is pinging */
+                uwb_beacon_print(evt->rc, be, bf);
+                bce = __uwb_beca_add(be, bf, evt->ts_jiffies);
+                if (bce == NULL) {
+                        mutex_unlock(&uwb_beca.mutex);
+                        return -ENOMEM;
+                }
+        }
+        mutex_unlock(&uwb_beca.mutex);
+
+        mutex_lock(&bce->mutex);
+        /* purge old beacon data */
+        kfree(bce->be);
+
+        last_ts = bce->ts_jiffies;
+
+        /* Update commonly used fields */
+        bce->ts_jiffies = evt->ts_jiffies;
+        bce->be = be;
+        bce->dev_addr = bf->hdr.SrcAddr;
+        bce->mac_addr = &bf->Device_Identifier;
+        be->wBPSTOffset = le16_to_cpu(be->wBPSTOffset);
+        be->wBeaconInfoLength = le16_to_cpu(be->wBeaconInfoLength);
+        stats_add_sample(&bce->lqe_stats, be->bLQI - 7);
+        stats_add_sample(&bce->rssi_stats, be->bRSSI + 18);
+
+        /*
+         * This might be a beacon from a new device.
+         */
+        if (bce->uwb_dev == NULL)
+                uwbd_dev_onair(evt->rc, bce);
+
+        mutex_unlock(&bce->mutex);
+
+        return 1; /* we keep the event data */
+}
+
+/*
+ * Handle UWB_RC_EVT_BEACON_SIZE events
+ *
+ * XXXXX
+ */
+int uwbd_evt_handle_rc_beacon_size(struct uwb_event *evt)
+{
+        int result = -EINVAL;
+        struct device *dev = &evt->rc->uwb_dev.dev;
+        struct uwb_rc_evt_beacon_size *bs;
+
+        /* Is there enough data to decode the event? */
+        if (evt->notif.size < sizeof(*bs)) {
+                dev_err(dev, "BEACON SIZE notification: Not enough data to "
+                        "decode (%zu vs %zu bytes needed)\n",
+                        evt->notif.size, sizeof(*bs));
+                goto error;
+        }
+        bs = container_of(evt->notif.rceb, struct uwb_rc_evt_beacon_size, rceb);
+        if (0)
+                dev_info(dev, "Beacon size changed to %u bytes "
+                        "(FIXME: action?)\n", le16_to_cpu(bs->wNewBeaconSize));
+        else {
+                /* temporary hack until we do something with this message... */
+                static unsigned count;
+                if (++count % 1000 == 0)
+                        dev_info(dev, "Beacon size changed %u times "
+                                "(FIXME: action?)\n", count);
+        }
+        result = 0;
+error:
+        return result;
+}
+
+/**
+ * uwbd_evt_handle_rc_bp_slot_change - handle a BP_SLOT_CHANGE event
+ * @evt: the BP_SLOT_CHANGE notification from the radio controller
+ *
+ * If the event indicates that no beacon period slots were available
+ * then radio controller has transitioned to a non-beaconing state.
+ * Otherwise, simply save the current beacon slot.
+ */
+int uwbd_evt_handle_rc_bp_slot_change(struct uwb_event *evt)
+{
+        struct uwb_rc *rc = evt->rc;
+        struct device *dev = &rc->uwb_dev.dev;
+        struct uwb_rc_evt_bp_slot_change *bpsc;
+
+        if (evt->notif.size < sizeof(*bpsc)) {
+                dev_err(dev, "BP SLOT CHANGE event: Not enough data\n");
+                return -EINVAL;
+        }
+        bpsc = container_of(evt->notif.rceb, struct uwb_rc_evt_bp_slot_change, rceb);
+
+        mutex_lock(&rc->uwb_dev.mutex);
+        if (uwb_rc_evt_bp_slot_change_no_slot(bpsc)) {
+                dev_info(dev, "stopped beaconing: No free slots in BP\n");
+                rc->beaconing = -1;
+        } else
+                rc->uwb_dev.beacon_slot = uwb_rc_evt_bp_slot_change_slot_num(bpsc);
+        mutex_unlock(&rc->uwb_dev.mutex);
+
+        return 0;
+}
+
+/**
+ * Handle UWB_RC_EVT_BPOIE_CHANGE events
+ *
+ * XXXXX
+ */
+struct uwb_ie_bpo {
+        struct uwb_ie_hdr hdr;
+        u8                bp_length;
+        u8                data[];
+} __attribute__((packed));
+
+int uwbd_evt_handle_rc_bpoie_change(struct uwb_event *evt)
+{
+        int result = -EINVAL;
+        struct device *dev = &evt->rc->uwb_dev.dev;
+        struct uwb_rc_evt_bpoie_change *bpoiec;
+        struct uwb_ie_bpo *bpoie;
+        static unsigned count;  /* FIXME: this is a temp hack */
+        size_t iesize;
+
+        /* Is there enough data to decode it? */
+        if (evt->notif.size < sizeof(*bpoiec)) {
+                dev_err(dev, "BPOIEC notification: Not enough data to "
+                        "decode (%zu vs %zu bytes needed)\n",
+                        evt->notif.size, sizeof(*bpoiec));
+                goto error;
+        }
+        bpoiec = container_of(evt->notif.rceb, struct uwb_rc_evt_bpoie_change, rceb);
+        iesize = le16_to_cpu(bpoiec->wBPOIELength);
+        if (iesize < sizeof(*bpoie)) {
+                dev_err(dev, "BPOIEC notification: Not enough IE data to "
+                        "decode (%zu vs %zu bytes needed)\n",
+                        iesize, sizeof(*bpoie));
+                goto error;
+        }
+        if (++count % 1000 == 0)        /* Lame placeholder */
+                dev_info(dev, "BPOIE: %u changes received\n", count);
+        /*
+         * FIXME: At this point we should go over all the IEs in the
+         *        bpoiec->BPOIE array and act on each.
+         */
+        result = 0;
+error:
+        return result;
+}
+
+/**
+ * uwb_bg_joined - is the RC in a beacon group?
+ * @rc: the radio controller
+ *
+ * Returns true if the radio controller is in a beacon group (even if
+ * it's the sole member).
+ */
+int uwb_bg_joined(struct uwb_rc *rc)
+{
+        return rc->beaconing != -1;
+}
+EXPORT_SYMBOL_GPL(uwb_bg_joined);
+
+/*
+ * Print beaconing state.
+ */
+static ssize_t uwb_rc_beacon_show(struct device *dev,
+                                  struct device_attribute *attr, char *buf)
+{
+        struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+        struct uwb_rc *rc = uwb_dev->rc;
+        ssize_t result;
+
+        mutex_lock(&rc->uwb_dev.mutex);
+        result = sprintf(buf, "%d\n", rc->beaconing);
+        mutex_unlock(&rc->uwb_dev.mutex);
+        return result;
+}
+
+/*
+ * Start beaconing on the specified channel, or stop beaconing.
+ *
+ * The BPST offset of when to start searching for a beacon group to
+ * join may be specified.
+ */
+static ssize_t uwb_rc_beacon_store(struct device *dev,
+                                   struct device_attribute *attr,
+                                   const char *buf, size_t size)
+{
+        struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+        struct uwb_rc *rc = uwb_dev->rc;
+        int channel;
+        unsigned bpst_offset = 0;
+        ssize_t result = -EINVAL;
+
+        result = sscanf(buf, "%d %u\n", &channel, &bpst_offset);
+        if (result >= 1)
+                result = uwb_rc_beacon(rc, channel, bpst_offset);
+
+        return result < 0 ? result : size;
+}
+DEVICE_ATTR(beacon, S_IRUGO | S_IWUSR, uwb_rc_beacon_show, uwb_rc_beacon_store);
diff --git a/drivers/uwb/driver.c b/drivers/uwb/driver.c
new file mode 100644
index 000000000000..521cdeb84971
--- /dev/null
+++ b/drivers/uwb/driver.c
@@ -0,0 +1,144 @@
+/*
+ * Ultra Wide Band
+ * Driver initialization, etc
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ *
+ * Life cycle: FIXME: explain
+ *
+ *  UWB radio controller:
+ *
+ *    1. alloc a uwb_rc, zero it
+ *    2. call uwb_rc_init() on it to set it up + ops (won't do any
+ *       kind of allocation)
+ *    3. register (now it is owned by the UWB stack--deregister before
+ *       freeing/destroying).
+ *    4. It lives on it's own now (UWB stack handles)--when it
+ *       disconnects, call unregister()
+ *    5. free it.
+ *
+ *    Make sure you have a reference to the uwb_rc before calling
+ *    any of the UWB API functions.
+ *
+ * TODO:
+ *
+ * 1. Locking and life cycle management is crappy still. All entry
+ *    points to the UWB HCD API assume you have a reference on the
+ *    uwb_rc structure and that it won't go away. They mutex lock it
+ *    before doing anything.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/kdev_t.h>
+#include <linux/random.h>
+#include <linux/uwb/debug.h>
+#include "uwb-internal.h"
+
+
+/* UWB stack attributes (or 'global' constants) */
+
+
+/**
+ * If a beacon dissapears for longer than this, then we consider the
+ * device who was represented by that beacon to be gone.
+ *
+ * ECMA-368[17.2.3, last para] establishes that a device must not
+ * consider a device to be its neighbour if he doesn't receive a beacon
+ * for more than mMaxLostBeacons. mMaxLostBeacons is defined in
+ * ECMA-368[17.16] as 3; because we can get only one beacon per
+ * superframe, that'd be 3 * 65ms = 195 ~ 200 ms. Let's give it time
+ * for jitter and stuff and make it 500 ms.
+ */
+unsigned long beacon_timeout_ms = 500;
+
+static
+ssize_t beacon_timeout_ms_show(struct class *class, char *buf)
+{
+        return scnprintf(buf, PAGE_SIZE, "%lu\n", beacon_timeout_ms);
+}
+
+static
+ssize_t beacon_timeout_ms_store(struct class *class,
+                                const char *buf, size_t size)
+{
+        unsigned long bt;
+        ssize_t result;
+        result = sscanf(buf, "%lu", &bt);
+        if (result != 1)
+                return -EINVAL;
+        beacon_timeout_ms = bt;
+        return size;
+}
+
+static struct class_attribute uwb_class_attrs[] = {
+        __ATTR(beacon_timeout_ms, S_IWUSR | S_IRUGO,
+               beacon_timeout_ms_show, beacon_timeout_ms_store),
+        __ATTR_NULL,
+};
+
+/** Device model classes */
+struct class uwb_rc_class = {
+        .name        = "uwb_rc",
+        .class_attrs = uwb_class_attrs,
+};
+
+
+static int __init uwb_subsys_init(void)
+{
+        int result = 0;
+
+        result = uwb_est_create();
+        if (result < 0) {
+                printk(KERN_ERR "uwb: Can't initialize EST subsystem\n");
+                goto error_est_init;
+        }
+
+        result = class_register(&uwb_rc_class);
+        if (result < 0)
+                goto error_uwb_rc_class_register;
+        uwbd_start();
+        uwb_dbg_init();
+        return 0;
+
+error_uwb_rc_class_register:
+        uwb_est_destroy();
+error_est_init:
+        return result;
+}
+module_init(uwb_subsys_init);
+
+static void __exit uwb_subsys_exit(void)
+{
+        uwb_dbg_exit();
+        uwbd_stop();
+        class_unregister(&uwb_rc_class);
+        uwb_est_destroy();
+        return;
+}
+module_exit(uwb_subsys_exit);
+
+MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
+MODULE_DESCRIPTION("Ultra Wide Band core");
+MODULE_LICENSE("GPL");
diff --git a/drivers/uwb/drp-avail.c b/drivers/uwb/drp-avail.c
new file mode 100644
index 000000000000..3febd8552808
--- /dev/null
+++ b/drivers/uwb/drp-avail.c
@@ -0,0 +1,288 @@
+/*
+ * Ultra Wide Band
+ * DRP availability management
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Reinette Chatre <reinette.chatre@intel.com>
+ * Copyright (C) 2008 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ * Manage DRP Availability (the MAS available for DRP
+ * reservations). Thus:
+ *
+ * - Handle DRP Availability Change notifications
+ *
+ * - Allow the reservation manager to indicate MAS reserved/released
+ *   by local (owned by/targeted at the radio controller)
+ *   reservations.
+ *
+ * - Based on the two sources above, generate a DRP Availability IE to
+ *   be included in the beacon.
+ *
+ * See also the documentation for struct uwb_drp_avail.
+ */
+
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/bitmap.h>
+#include "uwb-internal.h"
+
+/**
+ * uwb_drp_avail_init - initialize an RC's MAS availability
+ *
+ * All MAS are available initially.  The RC will inform use which
+ * slots are used for the BP (it may change in size).
+ */
+void uwb_drp_avail_init(struct uwb_rc *rc)
+{
+        bitmap_fill(rc->drp_avail.global, UWB_NUM_MAS);
+        bitmap_fill(rc->drp_avail.local, UWB_NUM_MAS);
+        bitmap_fill(rc->drp_avail.pending, UWB_NUM_MAS);
+}
+
+/*
+ * Determine MAS available for new local reservations.
+ *
+ * avail = global & local & pending
+ */
+static void uwb_drp_available(struct uwb_rc *rc, struct uwb_mas_bm *avail)
+{
+        bitmap_and(avail->bm, rc->drp_avail.global, rc->drp_avail.local, UWB_NUM_MAS);
+        bitmap_and(avail->bm, avail->bm, rc->drp_avail.pending, UWB_NUM_MAS);
+}
+
+/**
+ * uwb_drp_avail_reserve_pending - reserve MAS for a new reservation
+ * @rc: the radio controller
+ * @mas: the MAS to reserve
+ *
+ * Returns 0 on success, or -EBUSY if the MAS requested aren't available.
+ */
+int uwb_drp_avail_reserve_pending(struct uwb_rc *rc, struct uwb_mas_bm *mas)
+{
+        struct uwb_mas_bm avail;
+
+        uwb_drp_available(rc, &avail);
+        if (!bitmap_subset(mas->bm, avail.bm, UWB_NUM_MAS))
+                return -EBUSY;
+
+        bitmap_andnot(rc->drp_avail.pending, rc->drp_avail.pending, mas->bm, UWB_NUM_MAS);
+        return 0;
+}
+
+/**
+ * uwb_drp_avail_reserve - reserve MAS for an established reservation
+ * @rc: the radio controller
+ * @mas: the MAS to reserve
+ */
+void uwb_drp_avail_reserve(struct uwb_rc *rc, struct uwb_mas_bm *mas)
+{
+        bitmap_or(rc->drp_avail.pending, rc->drp_avail.pending, mas->bm, UWB_NUM_MAS);
+        bitmap_andnot(rc->drp_avail.local, rc->drp_avail.local, mas->bm, UWB_NUM_MAS);
+        rc->drp_avail.ie_valid = false;
+}
+
+/**
+ * uwb_drp_avail_release - release MAS from a pending or established reservation
+ * @rc: the radio controller
+ * @mas: the MAS to release
+ */
+void uwb_drp_avail_release(struct uwb_rc *rc, struct uwb_mas_bm *mas)
+{
+        bitmap_or(rc->drp_avail.local, rc->drp_avail.local, mas->bm, UWB_NUM_MAS);
+        bitmap_or(rc->drp_avail.pending, rc->drp_avail.pending, mas->bm, UWB_NUM_MAS);
+        rc->drp_avail.ie_valid = false;
+}
+
+/**
+ * uwb_drp_avail_ie_update - update the DRP Availability IE
+ * @rc: the radio controller
+ *
+ * avail = global & local
+ */
+void uwb_drp_avail_ie_update(struct uwb_rc *rc)
+{
+        struct uwb_mas_bm avail;
+
+        bitmap_and(avail.bm, rc->drp_avail.global, rc->drp_avail.local, UWB_NUM_MAS);
+
+        rc->drp_avail.ie.hdr.element_id = UWB_IE_DRP_AVAILABILITY;
+        rc->drp_avail.ie.hdr.length = UWB_NUM_MAS / 8;
+        uwb_mas_bm_copy_le(rc->drp_avail.ie.bmp, &avail);
+        rc->drp_avail.ie_valid = true;
+}
+
+/**
+ * Create an unsigned long from a buffer containing a byte stream.
+ *
+ * @array: pointer to buffer
+ * @itr:   index of buffer from where we start
+ * @len:   the buffer's remaining size may not be exact multiple of
+ *         sizeof(unsigned long), @len is the length of buffer that needs
+ *         to be converted. This will be sizeof(unsigned long) or smaller
+ *         (BUG if not). If it is smaller then we will pad the remaining
+ *         space of the result with zeroes.
+ */
+static
+unsigned long get_val(u8 *array, size_t itr, size_t len)
+{
+        unsigned long val = 0;
+        size_t top = itr + len;
+
+        BUG_ON(len > sizeof(val));
+
+        while (itr < top) {
+                val <<= 8;
+                val |= array[top - 1];
+                top--;
+        }
+        val <<= 8 * (sizeof(val) - len); /* padding */
+        return val;
+}
+
+/**
+ * Initialize bitmap from data buffer.
+ *
+ * The bitmap to be converted could come from a IE, for example a
+ * DRP Availability IE.
+ * From ECMA-368 1.0 [16.8.7]: "
+ * octets: 1            1               N * (0 to 32)
+ *         Element ID   Length (=N)     DRP Availability Bitmap
+ *
+ * The DRP Availability Bitmap field is up to 256 bits long, one
+ * bit for each MAS in the superframe, where the least-significant
+ * bit of the field corresponds to the first MAS in the superframe
+ * and successive bits correspond to successive MASs."
+ *
+ * The DRP Availability bitmap is in octets from 0 to 32, so octet
+ * 32 contains bits for MAS 1-8, etc. If the bitmap is smaller than 32
+ * octets, the bits in octets not included at the end of the bitmap are
+ * treated as zero. In this case (when the bitmap is smaller than 32
+ * octets) the MAS represented range from MAS 1 to MAS (size of bitmap)
+ * with the last octet still containing bits for MAS 1-8, etc.
+ *
+ * For example:
+ * F00F0102 03040506 0708090A 0B0C0D0E 0F010203
+ * ^^^^
+ * ||||
+ * ||||
+ * |||\LSB of byte is MAS 9
+ * ||\MSB of byte is MAS 16
+ * |\LSB of first byte is MAS 1
+ * \ MSB of byte is MAS 8
+ *
+ * An example of this encoding can be found in ECMA-368 Annex-D [Table D.11]
+ *
+ * The resulting bitmap will have the following mapping:
+ *      bit position 0 == MAS 1
+ *      bit position 1 == MAS 2
+ *      ...
+ *      bit position (UWB_NUM_MAS - 1) == MAS UWB_NUM_MAS
+ *
+ * @bmp_itr:    pointer to bitmap (can be declared with DECLARE_BITMAP)
+ * @buffer:     pointer to buffer containing bitmap data in big endian
+ *              format (MSB first)
+ * @buffer_size:number of bytes with which bitmap should be initialized
+ */
+static
+void buffer_to_bmp(unsigned long *bmp_itr, void *_buffer,
+                   size_t buffer_size)
+{
+        u8 *buffer = _buffer;
+        size_t itr, len;
+        unsigned long val;
+
+        itr = 0;
+        while (itr < buffer_size) {
+                len = buffer_size - itr >= sizeof(val) ?
+                        sizeof(val) : buffer_size - itr;
+                val = get_val(buffer, itr, len);
+                bmp_itr[itr / sizeof(val)] = val;
+                itr += sizeof(val);
+        }
+}
+
+
+/**
+ * Extract DRP Availability bitmap from the notification.
+ *
+ * The notification that comes in contains a bitmap of (UWB_NUM_MAS / 8) bytes
+ * We convert that to our internal representation.
+ */
+static
+int uwbd_evt_get_drp_avail(struct uwb_event *evt, unsigned long *bmp)
+{
+        struct device *dev = &evt->rc->uwb_dev.dev;
+        struct uwb_rc_evt_drp_avail *drp_evt;
+        int result = -EINVAL;
+
+        /* Is there enough data to decode the event? */
+        if (evt->notif.size < sizeof(*drp_evt)) {
+                dev_err(dev, "DRP Availability Change: Not enough "
+                        "data to decode event [%zu bytes, %zu "
+                        "needed]\n", evt->notif.size, sizeof(*drp_evt));
+                goto error;
+        }
+        drp_evt = container_of(evt->notif.rceb, struct uwb_rc_evt_drp_avail, rceb);
+        buffer_to_bmp(bmp, drp_evt->bmp, UWB_NUM_MAS/8);
+        result = 0;
+error:
+        return result;
+}
+
+
+/**
+ * Process an incoming DRP Availability notification.
+ *
+ * @evt:        Event information (packs the actual event data, which
+ *              radio controller it came to, etc).
+ *
+ * @returns:    0 on success (so uwbd() frees the event buffer), < 0
+ *              on error.
+ *
+ * According to ECMA-368 1.0 [16.8.7], bits set to ONE indicate that
+ * the MAS slot is available, bits set to ZERO indicate that the slot
+ * is busy.
+ *
+ * So we clear available slots, we set used slots :)
+ *
+ * The notification only marks non-availability based on the BP and
+ * received DRP IEs that are not for this radio controller.  A copy of
+ * this bitmap is needed to generate the real availability (which
+ * includes local and pending reservations).
+ *
+ * The DRP Availability IE that this radio controller emits will need
+ * to be updated.
+ */
+int uwbd_evt_handle_rc_drp_avail(struct uwb_event *evt)
+{
+        int result;
+        struct uwb_rc *rc = evt->rc;
+        DECLARE_BITMAP(bmp, UWB_NUM_MAS);
+
+        result = uwbd_evt_get_drp_avail(evt, bmp);
+        if (result < 0)
+                return result;
+
+        mutex_lock(&rc->rsvs_mutex);
+        bitmap_copy(rc->drp_avail.global, bmp, UWB_NUM_MAS);
+        rc->drp_avail.ie_valid = false;
+        mutex_unlock(&rc->rsvs_mutex);
+
+        uwb_rsv_sched_update(rc);
+
+        return 0;
+}
diff --git a/drivers/uwb/drp-ie.c b/drivers/uwb/drp-ie.c
new file mode 100644
index 000000000000..882724c5f126
--- /dev/null
+++ b/drivers/uwb/drp-ie.c
@@ -0,0 +1,232 @@
+/*
+ * UWB DRP IE management.
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Copyright (C) 2008 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/version.h>
+#include <linux/kernel.h>
+#include <linux/random.h>
+#include <linux/uwb.h>
+
+#include "uwb-internal.h"
+
+/*
+ * Allocate a DRP IE.
+ *
+ * To save having to free/allocate a DRP IE when its MAS changes,
+ * enough memory is allocated for the maxiumum number of DRP
+ * allocation fields.  This gives an overhead per reservation of up to
+ * (UWB_NUM_ZONES - 1) * 4 = 60 octets.
+ */
+static struct uwb_ie_drp *uwb_drp_ie_alloc(void)
+{
+        struct uwb_ie_drp *drp_ie;
+        unsigned tiebreaker;
+
+        drp_ie = kzalloc(sizeof(struct uwb_ie_drp) +
+                        UWB_NUM_ZONES * sizeof(struct uwb_drp_alloc),
+                        GFP_KERNEL);
+        if (drp_ie) {
+                drp_ie->hdr.element_id = UWB_IE_DRP;
+
+                get_random_bytes(&tiebreaker, sizeof(unsigned));
+                uwb_ie_drp_set_tiebreaker(drp_ie, tiebreaker & 1);
+        }
+        return drp_ie;
+}
+
+
+/*
+ * Fill a DRP IE's allocation fields from a MAS bitmap.
+ */
+static void uwb_drp_ie_from_bm(struct uwb_ie_drp *drp_ie,
+                               struct uwb_mas_bm *mas)
+{
+        int z, i, num_fields = 0, next = 0;
+        struct uwb_drp_alloc *zones;
+        __le16 current_bmp;
+        DECLARE_BITMAP(tmp_bmp, UWB_NUM_MAS);
+        DECLARE_BITMAP(tmp_mas_bm, UWB_MAS_PER_ZONE);
+
+        zones = drp_ie->allocs;
+
+        bitmap_copy(tmp_bmp, mas->bm, UWB_NUM_MAS);
+
+        /* Determine unique MAS bitmaps in zones from bitmap. */
+        for (z = 0; z < UWB_NUM_ZONES; z++) {
+                bitmap_copy(tmp_mas_bm, tmp_bmp, UWB_MAS_PER_ZONE);
+                if (bitmap_weight(tmp_mas_bm, UWB_MAS_PER_ZONE) > 0) {
+                        bool found = false;
+                        current_bmp = (__le16) *tmp_mas_bm;
+                        for (i = 0; i < next; i++) {
+                                if (current_bmp == zones[i].mas_bm) {
+                                        zones[i].zone_bm |= 1 << z;
+                                        found = true;
+                                        break;
+                                }
+                        }
+                        if (!found)  {
+                                num_fields++;
+                                zones[next].zone_bm = 1 << z;
+                                zones[next].mas_bm = current_bmp;
+                                next++;
+                        }
+                }
+                bitmap_shift_right(tmp_bmp, tmp_bmp, UWB_MAS_PER_ZONE, UWB_NUM_MAS);
+        }
+
+        /* Store in format ready for transmission (le16). */
+        for (i = 0; i < num_fields; i++) {
+                drp_ie->allocs[i].zone_bm = cpu_to_le16(zones[i].zone_bm);
+                drp_ie->allocs[i].mas_bm = cpu_to_le16(zones[i].mas_bm);
+        }
+
+        drp_ie->hdr.length = sizeof(struct uwb_ie_drp) - sizeof(struct uwb_ie_hdr)
+                + num_fields * sizeof(struct uwb_drp_alloc);
+}
+
+/**
+ * uwb_drp_ie_update - update a reservation's DRP IE
+ * @rsv: the reservation
+ */
+int uwb_drp_ie_update(struct uwb_rsv *rsv)
+{
+        struct device *dev = &rsv->rc->uwb_dev.dev;
+        struct uwb_ie_drp *drp_ie;
+        int reason_code, status;
+
+        switch (rsv->state) {
+        case UWB_RSV_STATE_NONE:
+                kfree(rsv->drp_ie);
+                rsv->drp_ie = NULL;
+                return 0;
+        case UWB_RSV_STATE_O_INITIATED:
+                reason_code = UWB_DRP_REASON_ACCEPTED;
+                status = 0;
+                break;
+        case UWB_RSV_STATE_O_PENDING:
+                reason_code = UWB_DRP_REASON_ACCEPTED;
+                status = 0;
+                break;
+        case UWB_RSV_STATE_O_MODIFIED:
+                reason_code = UWB_DRP_REASON_MODIFIED;
+                status = 1;
+                break;
+        case UWB_RSV_STATE_O_ESTABLISHED:
+                reason_code = UWB_DRP_REASON_ACCEPTED;
+                status = 1;
+                break;
+        case UWB_RSV_STATE_T_ACCEPTED:
+                reason_code = UWB_DRP_REASON_ACCEPTED;
+                status = 1;
+                break;
+        case UWB_RSV_STATE_T_DENIED:
+                reason_code = UWB_DRP_REASON_DENIED;
+                status = 0;
+                break;
+        default:
+                dev_dbg(dev, "rsv with unhandled state (%d)\n", rsv->state);
+                return -EINVAL;
+        }
+
+        if (rsv->drp_ie == NULL) {
+                rsv->drp_ie = uwb_drp_ie_alloc();
+                if (rsv->drp_ie == NULL)
+                        return -ENOMEM;
+        }
+        drp_ie = rsv->drp_ie;
+
+        uwb_ie_drp_set_owner(drp_ie,        uwb_rsv_is_owner(rsv));
+        uwb_ie_drp_set_status(drp_ie,       status);
+        uwb_ie_drp_set_reason_code(drp_ie,  reason_code);
+        uwb_ie_drp_set_stream_index(drp_ie, rsv->stream);
+        uwb_ie_drp_set_type(drp_ie,         rsv->type);
+
+        if (uwb_rsv_is_owner(rsv)) {
+                switch (rsv->target.type) {
+                case UWB_RSV_TARGET_DEV:
+                        drp_ie->dev_addr = rsv->target.dev->dev_addr;
+                        break;
+                case UWB_RSV_TARGET_DEVADDR:
+                        drp_ie->dev_addr = rsv->target.devaddr;
+                        break;
+                }
+        } else
+                drp_ie->dev_addr = rsv->owner->dev_addr;
+
+        uwb_drp_ie_from_bm(drp_ie, &rsv->mas);
+
+        rsv->ie_valid = true;
+        return 0;
+}
+
+/*
+ * Set MAS bits from given MAS bitmap in a single zone of large bitmap.
+ *
+ * We are given a zone id and the MAS bitmap of bits that need to be set in
+ * this zone. Note that this zone may already have bits set and this only
+ * adds settings - we cannot simply assign the MAS bitmap contents to the
+ * zone contents. We iterate over the the bits (MAS) in the zone and set the
+ * bits that are set in the given MAS bitmap.
+ */
+static
+void uwb_drp_ie_single_zone_to_bm(struct uwb_mas_bm *bm, u8 zone, u16 mas_bm)
+{
+        int mas;
+        u16 mas_mask;
+
+        for (mas = 0; mas < UWB_MAS_PER_ZONE; mas++) {
+                mas_mask = 1 << mas;
+                if (mas_bm & mas_mask)
+                        set_bit(zone * UWB_NUM_ZONES + mas, bm->bm);
+        }
+}
+
+/**
+ * uwb_drp_ie_zones_to_bm - convert DRP allocation fields to a bitmap
+ * @mas:    MAS bitmap that will be populated to correspond to the
+ *          allocation fields in the DRP IE
+ * @drp_ie: the DRP IE that contains the allocation fields.
+ *
+ * The input format is an array of MAS allocation fields (16 bit Zone
+ * bitmap, 16 bit MAS bitmap) as described in [ECMA-368] section
+ * 16.8.6. The output is a full 256 bit MAS bitmap.
+ *
+ * We go over all the allocation fields, for each allocation field we
+ * know which zones are impacted. We iterate over all the zones
+ * impacted and call a function that will set the correct MAS bits in
+ * each zone.
+ */
+void uwb_drp_ie_to_bm(struct uwb_mas_bm *bm, const struct uwb_ie_drp *drp_ie)
+{
+        int numallocs = (drp_ie->hdr.length - 4) / 4;
+        const struct uwb_drp_alloc *alloc;
+        int cnt;
+        u16 zone_bm, mas_bm;
+        u8 zone;
+        u16 zone_mask;
+
+        for (cnt = 0; cnt < numallocs; cnt++) {
+                alloc = &drp_ie->allocs[cnt];
+                zone_bm = le16_to_cpu(alloc->zone_bm);
+                mas_bm = le16_to_cpu(alloc->mas_bm);
+                for (zone = 0; zone < UWB_NUM_ZONES; zone++)   {
+                        zone_mask = 1 << zone;
+                        if (zone_bm & zone_mask)
+                                uwb_drp_ie_single_zone_to_bm(bm, zone, mas_bm);
+                }
+        }
+}
diff --git a/drivers/uwb/drp.c b/drivers/uwb/drp.c
new file mode 100644
index 000000000000..c0b1e5e2bd08
--- /dev/null
+++ b/drivers/uwb/drp.c
@@ -0,0 +1,461 @@
+/*
+ * Ultra Wide Band
+ * Dynamic Reservation Protocol handling
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ * Copyright (C) 2008 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/kthread.h>
+#include <linux/freezer.h>
+#include <linux/delay.h>
+#include "uwb-internal.h"
+
+/**
+ * Construct and send the SET DRP IE
+ *
+ * @rc:         UWB Host controller
+ * @returns:    >= 0 number of bytes still available in the beacon
+ *              < 0 errno code on error.
+ *
+ * See WUSB[8.6.2.7]: The host must set all the DRP IEs that it wants the
+ * device to include in its beacon at the same time. We thus have to
+ * traverse all reservations and include the DRP IEs of all PENDING
+ * and NEGOTIATED reservations in a SET DRP command for transmission.
+ *
+ * A DRP Availability IE is appended.
+ *
+ * rc->uwb_dev.mutex is held
+ *
+ * FIXME We currently ignore the returned value indicating the remaining space
+ * in beacon. This could be used to deny reservation requests earlier if
+ * determined that they would cause the beacon space to be exceeded.
+ */
+static
+int uwb_rc_gen_send_drp_ie(struct uwb_rc *rc)
+{
+        int result;
+        struct device *dev = &rc->uwb_dev.dev;
+        struct uwb_rc_cmd_set_drp_ie *cmd;
+        struct uwb_rc_evt_set_drp_ie reply;
+        struct uwb_rsv *rsv;
+        int num_bytes = 0;
+        u8 *IEDataptr;
+
+        result = -ENOMEM;
+        /* First traverse all reservations to determine memory needed. */
+        list_for_each_entry(rsv, &rc->reservations, rc_node) {
+                if (rsv->drp_ie != NULL)
+                        num_bytes += rsv->drp_ie->hdr.length + 2;
+        }
+        num_bytes += sizeof(rc->drp_avail.ie);
+        cmd = kzalloc(sizeof(*cmd) + num_bytes, GFP_KERNEL);
+        if (cmd == NULL)
+                goto error;
+        cmd->rccb.bCommandType = UWB_RC_CET_GENERAL;
+        cmd->rccb.wCommand = cpu_to_le16(UWB_RC_CMD_SET_DRP_IE);
+        cmd->wIELength = num_bytes;
+        IEDataptr = (u8 *)&cmd->IEData[0];
+
+        /* Next traverse all reservations to place IEs in allocated memory. */
+        list_for_each_entry(rsv, &rc->reservations, rc_node) {
+                if (rsv->drp_ie != NULL) {
+                        memcpy(IEDataptr, rsv->drp_ie,
+                               rsv->drp_ie->hdr.length + 2);
+                        IEDataptr += rsv->drp_ie->hdr.length + 2;
+                }
+        }
+        memcpy(IEDataptr, &rc->drp_avail.ie, sizeof(rc->drp_avail.ie));
+
+        reply.rceb.bEventType = UWB_RC_CET_GENERAL;
+        reply.rceb.wEvent = UWB_RC_CMD_SET_DRP_IE;
+        result = uwb_rc_cmd(rc, "SET-DRP-IE", &cmd->rccb,
+                        sizeof(*cmd) + num_bytes, &reply.rceb,
+                        sizeof(reply));
+        if (result < 0)
+                goto error_cmd;
+        result = le16_to_cpu(reply.wRemainingSpace);
+        if (reply.bResultCode != UWB_RC_RES_SUCCESS) {
+                dev_err(&rc->uwb_dev.dev, "SET-DRP-IE: command execution "
+                                "failed: %s (%d). RemainingSpace in beacon "
+                                "= %d\n", uwb_rc_strerror(reply.bResultCode),
+                                reply.bResultCode, result);
+                result = -EIO;
+        } else {
+                dev_dbg(dev, "SET-DRP-IE sent. RemainingSpace in beacon "
+                             "= %d.\n", result);
+                result = 0;
+        }
+error_cmd:
+        kfree(cmd);
+error:
+        return result;
+
+}
+/**
+ * Send all DRP IEs associated with this host
+ *
+ * @returns:    >= 0 number of bytes still available in the beacon
+ *              < 0 errno code on error.
+ *
+ * As per the protocol we obtain the host controller device lock to access
+ * bandwidth structures.
+ */
+int uwb_rc_send_all_drp_ie(struct uwb_rc *rc)
+{
+        int result;
+
+        mutex_lock(&rc->uwb_dev.mutex);
+        result = uwb_rc_gen_send_drp_ie(rc);
+        mutex_unlock(&rc->uwb_dev.mutex);
+        return result;
+}
+
+void uwb_drp_handle_timeout(struct uwb_rsv *rsv)
+{
+        struct device *dev = &rsv->rc->uwb_dev.dev;
+
+        dev_dbg(dev, "reservation timeout in state %s (%d)\n",
+                uwb_rsv_state_str(rsv->state), rsv->state);
+
+        switch (rsv->state) {
+        case UWB_RSV_STATE_O_INITIATED:
+                if (rsv->is_multicast) {
+                        uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_ESTABLISHED);
+                        return;
+                }
+                break;
+        case UWB_RSV_STATE_O_ESTABLISHED:
+                if (rsv->is_multicast)
+                        return;
+                break;
+        default:
+                break;
+        }
+        uwb_rsv_remove(rsv);
+}
+
+/*
+ * Based on the DRP IE, transition a target reservation to a new
+ * state.
+ */
+static void uwb_drp_process_target(struct uwb_rc *rc, struct uwb_rsv *rsv,
+                                   struct uwb_ie_drp *drp_ie)
+{
+        struct device *dev = &rc->uwb_dev.dev;
+        int status;
+        enum uwb_drp_reason reason_code;
+
+        status = uwb_ie_drp_status(drp_ie);
+        reason_code = uwb_ie_drp_reason_code(drp_ie);
+
+        if (status) {
+                switch (reason_code) {
+                case UWB_DRP_REASON_ACCEPTED:
+                        uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_ACCEPTED);
+                        break;
+                case UWB_DRP_REASON_MODIFIED:
+                        dev_err(dev, "FIXME: unhandled reason code (%d/%d)\n",
+                                reason_code, status);
+                        break;
+                default:
+                        dev_warn(dev, "ignoring invalid DRP IE state (%d/%d)\n",
+                                 reason_code, status);
+                }
+        } else {
+                switch (reason_code) {
+                case UWB_DRP_REASON_ACCEPTED:
+                        /* New reservations are handled in uwb_rsv_find(). */
+                        break;
+                case UWB_DRP_REASON_DENIED:
+                        uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE);
+                        break;
+                case UWB_DRP_REASON_CONFLICT:
+                case UWB_DRP_REASON_MODIFIED:
+                        dev_err(dev, "FIXME: unhandled reason code (%d/%d)\n",
+                                reason_code, status);
+                        break;
+                default:
+                        dev_warn(dev, "ignoring invalid DRP IE state (%d/%d)\n",
+                                 reason_code, status);
+                }
+        }
+}
+
+/*
+ * Based on the DRP IE, transition an owner reservation to a new
+ * state.
+ */
+static void uwb_drp_process_owner(struct uwb_rc *rc, struct uwb_rsv *rsv,
+                                  struct uwb_ie_drp *drp_ie)
+{
+        struct device *dev = &rc->uwb_dev.dev;
+        int status;
+        enum uwb_drp_reason reason_code;
+
+        status = uwb_ie_drp_status(drp_ie);
+        reason_code = uwb_ie_drp_reason_code(drp_ie);
+
+        if (status) {
+                switch (reason_code) {
+                case UWB_DRP_REASON_ACCEPTED:
+                        uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_ESTABLISHED);
+                        break;
+                case UWB_DRP_REASON_MODIFIED:
+                        dev_err(dev, "FIXME: unhandled reason code (%d/%d)\n",
+                                reason_code, status);
+                        break;
+                default:
+                        dev_warn(dev, "ignoring invalid DRP IE state (%d/%d)\n",
+                                 reason_code, status);
+                }
+        } else {
+                switch (reason_code) {
+                case UWB_DRP_REASON_PENDING:
+                        uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_PENDING);
+                        break;
+                case UWB_DRP_REASON_DENIED:
+                        uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE);
+                        break;
+                case UWB_DRP_REASON_CONFLICT:
+                case UWB_DRP_REASON_MODIFIED:
+                        dev_err(dev, "FIXME: unhandled reason code (%d/%d)\n",
+                                reason_code, status);
+                        break;
+                default:
+                        dev_warn(dev, "ignoring invalid DRP IE state (%d/%d)\n",
+                                 reason_code, status);
+                }
+        }
+}
+
+/*
+ * Process a received DRP IE, it's either for a reservation owned by
+ * the RC or targeted at it (or it's for a WUSB cluster reservation).
+ */
+static void uwb_drp_process(struct uwb_rc *rc, struct uwb_dev *src,
+                     struct uwb_ie_drp *drp_ie)
+{
+        struct uwb_rsv *rsv;
+
+        rsv = uwb_rsv_find(rc, src, drp_ie);
+        if (!rsv) {
+                /*
+                 * No reservation? It's either for a recently
+                 * terminated reservation; or the DRP IE couldn't be
+                 * processed (e.g., an invalid IE or out of memory).
+                 */
+                return;
+        }
+
+        /*
+         * Do nothing with DRP IEs for reservations that have been
+         * terminated.
+         */
+        if (rsv->state == UWB_RSV_STATE_NONE) {
+                uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE);
+                return;
+        }
+
+        if (uwb_ie_drp_owner(drp_ie))
+                uwb_drp_process_target(rc, rsv, drp_ie);
+        else
+                uwb_drp_process_owner(rc, rsv, drp_ie);
+}
+
+
+/*
+ * Process all the DRP IEs (both DRP IEs and the DRP Availability IE)
+ * from a device.
+ */
+static
+void uwb_drp_process_all(struct uwb_rc *rc, struct uwb_rc_evt_drp *drp_evt,
+                         size_t ielen, struct uwb_dev *src_dev)
+{
+        struct device *dev = &rc->uwb_dev.dev;
+        struct uwb_ie_hdr *ie_hdr;
+        void *ptr;
+
+        ptr = drp_evt->ie_data;
+        for (;;) {
+                ie_hdr = uwb_ie_next(&ptr, &ielen);
+                if (!ie_hdr)
+                        break;
+
+                switch (ie_hdr->element_id) {
+                case UWB_IE_DRP_AVAILABILITY:
+                        /* FIXME: does something need to be done with this? */
+                        break;
+                case UWB_IE_DRP:
+                        uwb_drp_process(rc, src_dev, (struct uwb_ie_drp *)ie_hdr);
+                        break;
+                default:
+                        dev_warn(dev, "unexpected IE in DRP notification\n");
+                        break;
+                }
+        }
+
+        if (ielen > 0)
+                dev_warn(dev, "%d octets remaining in DRP notification\n",
+                         (int)ielen);
+}
+
+
+/*
+ * Go through all the DRP IEs and find the ones that conflict with our
+ * reservations.
+ *
+ * FIXME: must resolve the conflict according the the rules in
+ * [ECMA-368].
+ */
+static
+void uwb_drp_process_conflict_all(struct uwb_rc *rc, struct uwb_rc_evt_drp *drp_evt,
+                                  size_t ielen, struct uwb_dev *src_dev)
+{
+        struct device *dev = &rc->uwb_dev.dev;
+        struct uwb_ie_hdr *ie_hdr;
+        struct uwb_ie_drp *drp_ie;
+        void *ptr;
+
+        ptr = drp_evt->ie_data;
+        for (;;) {
+                ie_hdr = uwb_ie_next(&ptr, &ielen);
+                if (!ie_hdr)
+                        break;
+
+                drp_ie = container_of(ie_hdr, struct uwb_ie_drp, hdr);
+
+                /* FIXME: check if this DRP IE conflicts. */
+        }
+
+        if (ielen > 0)
+                dev_warn(dev, "%d octets remaining in DRP notification\n",
+                         (int)ielen);
+}
+
+
+/*
+ * Terminate all reservations owned by, or targeted at, 'uwb_dev'.
+ */
+static void uwb_drp_terminate_all(struct uwb_rc *rc, struct uwb_dev *uwb_dev)
+{
+        struct uwb_rsv *rsv;
+
+        list_for_each_entry(rsv, &rc->reservations, rc_node) {
+                if (rsv->owner == uwb_dev
+                    || (rsv->target.type == UWB_RSV_TARGET_DEV && rsv->target.dev == uwb_dev))
+                        uwb_rsv_remove(rsv);
+        }
+}
+
+
+/**
+ * uwbd_evt_handle_rc_drp - handle a DRP_IE event
+ * @evt: the DRP_IE event from the radio controller
+ *
+ * This processes DRP notifications from the radio controller, either
+ * initiating a new reservation or transitioning an existing
+ * reservation into a different state.
+ *
+ * DRP notifications can occur for three different reasons:
+ *
+ * - UWB_DRP_NOTIF_DRP_IE_RECVD: one or more DRP IEs with the RC as
+ *   the target or source have been recieved.
+ *
+ *   These DRP IEs could be new or for an existing reservation.
+ *
+ *   If the DRP IE for an existing reservation ceases to be to
+ *   recieved for at least mMaxLostBeacons, the reservation should be
+ *   considered to be terminated.  Note that the TERMINATE reason (see
+ *   below) may not always be signalled (e.g., the remote device has
+ *   two or more reservations established with the RC).
+ *
+ * - UWB_DRP_NOTIF_CONFLICT: DRP IEs from any device in the beacon
+ *   group conflict with the RC's reservations.
+ *
+ * - UWB_DRP_NOTIF_TERMINATE: DRP IEs are no longer being received
+ *   from a device (i.e., it's terminated all reservations).
+ *
+ * Only the software state of the reservations is changed; the setting
+ * of the radio controller's DRP IEs is done after all the events in
+ * an event buffer are processed.  This saves waiting multiple times
+ * for the SET_DRP_IE command to complete.
+ */
+int uwbd_evt_handle_rc_drp(struct uwb_event *evt)
+{
+        struct device *dev = &evt->rc->uwb_dev.dev;
+        struct uwb_rc *rc = evt->rc;
+        struct uwb_rc_evt_drp *drp_evt;
+        size_t ielength, bytes_left;
+        struct uwb_dev_addr src_addr;
+        struct uwb_dev *src_dev;
+        int reason;
+
+        /* Is there enough data to decode the event (and any IEs in
+           its payload)? */
+        if (evt->notif.size < sizeof(*drp_evt)) {
+                dev_err(dev, "DRP event: Not enough data to decode event "
+                        "[%zu bytes left, %zu needed]\n",
+                        evt->notif.size, sizeof(*drp_evt));
+                return 0;
+        }
+        bytes_left = evt->notif.size - sizeof(*drp_evt);
+        drp_evt = container_of(evt->notif.rceb, struct uwb_rc_evt_drp, rceb);
+        ielength = le16_to_cpu(drp_evt->ie_length);
+        if (bytes_left != ielength) {
+                dev_err(dev, "DRP event: Not enough data in payload [%zu"
+                        "bytes left, %zu declared in the event]\n",
+                        bytes_left, ielength);
+                return 0;
+        }
+
+        memcpy(src_addr.data, &drp_evt->src_addr, sizeof(src_addr));
+        src_dev = uwb_dev_get_by_devaddr(rc, &src_addr);
+        if (!src_dev) {
+                /*
+                 * A DRP notification from an unrecognized device.
+                 *
+                 * This is probably from a WUSB device that doesn't
+                 * have an EUI-48 and therefore doesn't show up in the
+                 * UWB device database.  It's safe to simply ignore
+                 * these.
+                 */
+                return 0;
+        }
+
+        mutex_lock(&rc->rsvs_mutex);
+
+        reason = uwb_rc_evt_drp_reason(drp_evt);
+
+        switch (reason) {
+        case UWB_DRP_NOTIF_DRP_IE_RCVD:
+                uwb_drp_process_all(rc, drp_evt, ielength, src_dev);
+                break;
+        case UWB_DRP_NOTIF_CONFLICT:
+                uwb_drp_process_conflict_all(rc, drp_evt, ielength, src_dev);
+                break;
+        case UWB_DRP_NOTIF_TERMINATE:
+                uwb_drp_terminate_all(rc, src_dev);
+                break;
+        default:
+                dev_warn(dev, "ignored DRP event with reason code: %d\n", reason);
+                break;
+        }
+
+        mutex_unlock(&rc->rsvs_mutex);
+
+        uwb_dev_put(src_dev);
+        return 0;
+}
diff --git a/drivers/uwb/est.c b/drivers/uwb/est.c
new file mode 100644
index 000000000000..5fe566b7c845
--- /dev/null
+++ b/drivers/uwb/est.c
@@ -0,0 +1,477 @@
+/*
+ * Ultra Wide Band Radio Control
+ * Event Size Tables management
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ *
+ * Infrastructure, code and data tables for guessing the size of
+ * events received on the notification endpoints of UWB radio
+ * controllers.
+ *
+ * You define a table of events and for each, its size and how to get
+ * the extra size.
+ *
+ * ENTRY POINTS:
+ *
+ * uwb_est_{init/destroy}(): To initialize/release the EST subsystem.
+ *
+ * uwb_est_[u]register(): To un/register event size tables
+ *   uwb_est_grow()
+ *
+ * uwb_est_find_size(): Get the size of an event
+ *   uwb_est_get_size()
+ */
+#include <linux/spinlock.h>
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+#include "uwb-internal.h"
+
+
+struct uwb_est {
+        u16 type_event_high;
+        u16 vendor, product;
+        u8 entries;
+        const struct uwb_est_entry *entry;
+};
+
+
+static struct uwb_est *uwb_est;
+static u8 uwb_est_size;
+static u8 uwb_est_used;
+static DEFINE_RWLOCK(uwb_est_lock);
+
+/**
+ * WUSB Standard Event Size Table, HWA-RC interface
+ *
+ * Sizes for events and notifications type 0 (general), high nibble 0.
+ */
+static
+struct uwb_est_entry uwb_est_00_00xx[] = {
+        [UWB_RC_EVT_IE_RCV] = {
+                .size = sizeof(struct uwb_rc_evt_ie_rcv),
+                .offset = 1 + offsetof(struct uwb_rc_evt_ie_rcv, wIELength),
+        },
+        [UWB_RC_EVT_BEACON] = {
+                .size = sizeof(struct uwb_rc_evt_beacon),
+                .offset = 1 + offsetof(struct uwb_rc_evt_beacon, wBeaconInfoLength),
+        },
+        [UWB_RC_EVT_BEACON_SIZE] = {
+                .size = sizeof(struct uwb_rc_evt_beacon_size),
+        },
+        [UWB_RC_EVT_BPOIE_CHANGE] = {
+                .size = sizeof(struct uwb_rc_evt_bpoie_change),
+                .offset = 1 + offsetof(struct uwb_rc_evt_bpoie_change,
+                                       wBPOIELength),
+        },
+        [UWB_RC_EVT_BP_SLOT_CHANGE] = {
+                .size = sizeof(struct uwb_rc_evt_bp_slot_change),
+        },
+        [UWB_RC_EVT_BP_SWITCH_IE_RCV] = {
+                .size = sizeof(struct uwb_rc_evt_bp_switch_ie_rcv),
+                .offset = 1 + offsetof(struct uwb_rc_evt_bp_switch_ie_rcv, wIELength),
+        },
+        [UWB_RC_EVT_DEV_ADDR_CONFLICT] = {
+                .size = sizeof(struct uwb_rc_evt_dev_addr_conflict),
+        },
+        [UWB_RC_EVT_DRP_AVAIL] = {
+                .size = sizeof(struct uwb_rc_evt_drp_avail)
+        },
+        [UWB_RC_EVT_DRP] = {
+                .size = sizeof(struct uwb_rc_evt_drp),
+                .offset = 1 + offsetof(struct uwb_rc_evt_drp, ie_length),
+        },
+        [UWB_RC_EVT_BP_SWITCH_STATUS] = {
+                .size = sizeof(struct uwb_rc_evt_bp_switch_status),
+        },
+        [UWB_RC_EVT_CMD_FRAME_RCV] = {
+                .size = sizeof(struct uwb_rc_evt_cmd_frame_rcv),
+                .offset = 1 + offsetof(struct uwb_rc_evt_cmd_frame_rcv, dataLength),
+        },
+        [UWB_RC_EVT_CHANNEL_CHANGE_IE_RCV] = {
+                .size = sizeof(struct uwb_rc_evt_channel_change_ie_rcv),
+                .offset = 1 + offsetof(struct uwb_rc_evt_channel_change_ie_rcv, wIELength),
+        },
+        [UWB_RC_CMD_CHANNEL_CHANGE] = {
+                .size = sizeof(struct uwb_rc_evt_confirm),
+        },
+        [UWB_RC_CMD_DEV_ADDR_MGMT] = {
+                .size = sizeof(struct uwb_rc_evt_dev_addr_mgmt) },
+        [UWB_RC_CMD_GET_IE] = {
+                .size = sizeof(struct uwb_rc_evt_get_ie),
+                .offset = 1 + offsetof(struct uwb_rc_evt_get_ie, wIELength),
+        },
+        [UWB_RC_CMD_RESET] = {
+                .size = sizeof(struct uwb_rc_evt_confirm),
+        },
+        [UWB_RC_CMD_SCAN] = {
+                .size = sizeof(struct uwb_rc_evt_confirm),
+        },
+        [UWB_RC_CMD_SET_BEACON_FILTER] = {
+                .size = sizeof(struct uwb_rc_evt_confirm),
+        },
+        [UWB_RC_CMD_SET_DRP_IE] = {
+                .size = sizeof(struct uwb_rc_evt_set_drp_ie),
+        },
+        [UWB_RC_CMD_SET_IE] = {
+                .size = sizeof(struct uwb_rc_evt_set_ie),
+        },
+        [UWB_RC_CMD_SET_NOTIFICATION_FILTER] = {
+                .size = sizeof(struct uwb_rc_evt_confirm),
+        },
+        [UWB_RC_CMD_SET_TX_POWER] = {
+                .size = sizeof(struct uwb_rc_evt_confirm),
+        },
+        [UWB_RC_CMD_SLEEP] = {
+                .size = sizeof(struct uwb_rc_evt_confirm),
+        },
+        [UWB_RC_CMD_START_BEACON] = {
+                .size = sizeof(struct uwb_rc_evt_confirm),
+        },
+        [UWB_RC_CMD_STOP_BEACON] = {
+                .size = sizeof(struct uwb_rc_evt_confirm),
+        },
+        [UWB_RC_CMD_BP_MERGE] = {
+                .size = sizeof(struct uwb_rc_evt_confirm),
+        },
+        [UWB_RC_CMD_SEND_COMMAND_FRAME] = {
+                .size = sizeof(struct uwb_rc_evt_confirm),
+        },
+        [UWB_RC_CMD_SET_ASIE_NOTIF] = {
+                .size = sizeof(struct uwb_rc_evt_confirm),
+        },
+};
+
+static
+struct uwb_est_entry uwb_est_01_00xx[] = {
+        [UWB_RC_DAA_ENERGY_DETECTED] = {
+                .size = sizeof(struct uwb_rc_evt_daa_energy_detected),
+        },
+        [UWB_RC_SET_DAA_ENERGY_MASK] = {
+                .size = sizeof(struct uwb_rc_evt_set_daa_energy_mask),
+        },
+        [UWB_RC_SET_NOTIFICATION_FILTER_EX] = {
+                .size = sizeof(struct uwb_rc_evt_set_notification_filter_ex),
+        },
+};
+
+/**
+ * Initialize the EST subsystem
+ *
+ * Register the standard tables also.
+ *
+ * FIXME: tag init
+ */
+int uwb_est_create(void)
+{
+        int result;
+
+        uwb_est_size = 2;
+        uwb_est_used = 0;
+        uwb_est = kzalloc(uwb_est_size * sizeof(uwb_est[0]), GFP_KERNEL);
+        if (uwb_est == NULL)
+                return -ENOMEM;
+
+        result = uwb_est_register(UWB_RC_CET_GENERAL, 0, 0xffff, 0xffff,
+                                  uwb_est_00_00xx, ARRAY_SIZE(uwb_est_00_00xx));
+        if (result < 0)
+                goto out;
+        result = uwb_est_register(UWB_RC_CET_EX_TYPE_1, 0, 0xffff, 0xffff,
+                                  uwb_est_01_00xx, ARRAY_SIZE(uwb_est_01_00xx));
+out:
+        return result;
+}
+
+
+/** Clean it up */
+void uwb_est_destroy(void)
+{
+        kfree(uwb_est);
+        uwb_est = NULL;
+        uwb_est_size = uwb_est_used = 0;
+}
+
+
+/**
+ * Double the capacity of the EST table
+ *
+ * @returns 0 if ok, < 0 errno no error.
+ */
+static
+int uwb_est_grow(void)
+{
+        size_t actual_size = uwb_est_size * sizeof(uwb_est[0]);
+        void *new = kmalloc(2 * actual_size, GFP_ATOMIC);
+        if (new == NULL)
+                return -ENOMEM;
+        memcpy(new, uwb_est, actual_size);
+        memset(new + actual_size, 0, actual_size);
+        kfree(uwb_est);
+        uwb_est = new;
+        uwb_est_size *= 2;
+        return 0;
+}
+
+
+/**
+ * Register an event size table
+ *
+ * Makes room for it if the table is full, and then inserts  it in the
+ * right position (entries are sorted by type, event_high, vendor and
+ * then product).
+ *
+ * @vendor:  vendor code for matching against the device (0x0000 and
+ *           0xffff mean any); use 0x0000 to force all to match without
+ *           checking possible vendor specific ones, 0xfffff to match
+ *           after checking vendor specific ones.
+ *
+ * @product: product code from that vendor; same matching rules, use
+ *           0x0000 for not allowing vendor specific matches, 0xffff
+ *           for allowing.
+ *
+ * This arragement just makes the tables sort differenty. Because the
+ * table is sorted by growing type-event_high-vendor-product, a zero
+ * vendor will match before than a 0x456a vendor, that will match
+ * before a 0xfffff vendor.
+ *
+ * @returns 0 if ok, < 0 errno on error (-ENOENT if not found).
+ */
+/* FIXME: add bus type to vendor/product code */
+int uwb_est_register(u8 type, u8 event_high, u16 vendor, u16 product,
+                     const struct uwb_est_entry *entry, size_t entries)
+{
+        unsigned long flags;
+        unsigned itr;
+        u16 type_event_high;
+        int result = 0;
+
+        write_lock_irqsave(&uwb_est_lock, flags);
+        if (uwb_est_used == uwb_est_size) {
+                result = uwb_est_grow();
+                if (result < 0)
+                        goto out;
+        }
+        /* Find the right spot to insert it in */
+        type_event_high = type << 8 | event_high;
+        for (itr = 0; itr < uwb_est_used; itr++)
+                if (uwb_est[itr].type_event_high < type
+                    && uwb_est[itr].vendor < vendor
+                    && uwb_est[itr].product < product)
+                        break;
+
+        /* Shift others to make room for the new one? */
+        if (itr < uwb_est_used)
+                memmove(&uwb_est[itr+1], &uwb_est[itr], uwb_est_used - itr);
+        uwb_est[itr].type_event_high = type << 8 | event_high;
+        uwb_est[itr].vendor = vendor;
+        uwb_est[itr].product = product;
+        uwb_est[itr].entry = entry;
+        uwb_est[itr].entries = entries;
+        uwb_est_used++;
+out:
+        write_unlock_irqrestore(&uwb_est_lock, flags);
+        return result;
+}
+EXPORT_SYMBOL_GPL(uwb_est_register);
+
+
+/**
+ * Unregister an event size table
+ *
+ * This just removes the specified entry and moves the ones after it
+ * to fill in the gap. This is needed to keep the list sorted; no
+ * reallocation is done to reduce the size of the table.
+ *
+ * We unregister by all the data we used to register instead of by
+ * pointer to the @entry array because we might have used the same
+ * table for a bunch of IDs (for example).
+ *
+ * @returns 0 if ok, < 0 errno on error (-ENOENT if not found).
+ */
+int uwb_est_unregister(u8 type, u8 event_high, u16 vendor, u16 product,
+                       const struct uwb_est_entry *entry, size_t entries)
+{
+        unsigned long flags;
+        unsigned itr;
+        struct uwb_est est_cmp = {
+                .type_event_high = type << 8 | event_high,
+                .vendor = vendor,
+                .product = product,
+                .entry = entry,
+                .entries = entries
+        };
+        write_lock_irqsave(&uwb_est_lock, flags);
+        for (itr = 0; itr < uwb_est_used; itr++)
+                if (!memcmp(&uwb_est[itr], &est_cmp, sizeof(est_cmp)))
+                        goto found;
+        write_unlock_irqrestore(&uwb_est_lock, flags);
+        return -ENOENT;
+
+found:
+        if (itr < uwb_est_used - 1)     /* Not last one? move ones above */
+                memmove(&uwb_est[itr], &uwb_est[itr+1], uwb_est_used - itr - 1);
+        uwb_est_used--;
+        write_unlock_irqrestore(&uwb_est_lock, flags);
+        return 0;
+}
+EXPORT_SYMBOL_GPL(uwb_est_unregister);
+
+
+/**
+ * Get the size of an event from a table
+ *
+ * @rceb: pointer to the buffer with the event
+ * @rceb_size: size of the area pointed to by @rceb in bytes.
+ * @returns: > 0      Size of the event
+ *           -ENOSPC  An area big enough was not provided to look
+ *                    ahead into the event's guts and guess the size.
+ *           -EINVAL  Unknown event code (wEvent).
+ *
+ * This will look at the received RCEB and guess what is the total
+ * size. For variable sized events, it will look further ahead into
+ * their length field to see how much data should be read.
+ *
+ * Note this size is *not* final--the neh (Notification/Event Handle)
+ * might specificy an extra size to add.
+ */
+static
+ssize_t uwb_est_get_size(struct uwb_rc *uwb_rc, struct uwb_est *est,
+                         u8 event_low, const struct uwb_rceb *rceb,
+                         size_t rceb_size)
+{
+        unsigned offset;
+        ssize_t size;
+        struct device *dev = &uwb_rc->uwb_dev.dev;
+        const struct uwb_est_entry *entry;
+
+        size = -ENOENT;
+        if (event_low >= est->entries) {        /* in range? */
+                dev_err(dev, "EST %p 0x%04x/%04x/%04x[%u]: event %u out of range\n",
+                        est, est->type_event_high, est->vendor, est->product,
+                        est->entries, event_low);
+                goto out;
+        }
+        size = -ENOENT;
+        entry = &est->entry[event_low];
+        if (entry->size == 0 && entry->offset == 0) {   /* unknown? */
+                dev_err(dev, "EST %p 0x%04x/%04x/%04x[%u]: event %u unknown\n",
+                        est, est->type_event_high, est->vendor, est->product,
+                        est->entries, event_low);
+                goto out;
+        }
+        offset = entry->offset; /* extra fries with that? */
+        if (offset == 0)
+                size = entry->size;
+        else {
+                /* Ops, got an extra size field at 'offset'--read it */
+                const void *ptr = rceb;
+                size_t type_size = 0;
+                offset--;
+                size = -ENOSPC;                 /* enough data for more? */
+                switch (entry->type) {
+                case UWB_EST_16:  type_size = sizeof(__le16); break;
+                case UWB_EST_8:   type_size = sizeof(u8);     break;
+                default:         BUG();
+                }
+                if (offset + type_size > rceb_size) {
+                        dev_err(dev, "EST %p 0x%04x/%04x/%04x[%u]: "
+                                "not enough data to read extra size\n",
+                                est, est->type_event_high, est->vendor,
+                                est->product, est->entries);
+                        goto out;
+                }
+                size = entry->size;
+                ptr += offset;
+                switch (entry->type) {
+                case UWB_EST_16:  size += le16_to_cpu(*(__le16 *)ptr); break;
+                case UWB_EST_8:   size += *(u8 *)ptr;                  break;
+                default:         BUG();
+                }
+        }
+out:
+        return size;
+}
+
+
+/**
+ * Guesses the size of a WA event
+ *
+ * @rceb: pointer to the buffer with the event
+ * @rceb_size: size of the area pointed to by @rceb in bytes.
+ * @returns: > 0      Size of the event
+ *           -ENOSPC  An area big enough was not provided to look
+ *                    ahead into the event's guts and guess the size.
+ *           -EINVAL  Unknown event code (wEvent).
+ *
+ * This will look at the received RCEB and guess what is the total
+ * size by checking all the tables registered with
+ * uwb_est_register(). For variable sized events, it will look further
+ * ahead into their length field to see how much data should be read.
+ *
+ * Note this size is *not* final--the neh (Notification/Event Handle)
+ * might specificy an extra size to add or replace.
+ */
+ssize_t uwb_est_find_size(struct uwb_rc *rc, const struct uwb_rceb *rceb,
+                          size_t rceb_size)
+{
+        /* FIXME: add vendor/product data */
+        ssize_t size;
+        struct device *dev = &rc->uwb_dev.dev;
+        unsigned long flags;
+        unsigned itr;
+        u16 type_event_high, event;
+        u8 *ptr = (u8 *) rceb;
+
+        read_lock_irqsave(&uwb_est_lock, flags);
+        d_printf(2, dev, "Size query for event 0x%02x/%04x/%02x,"
+                 " buffer size %ld\n",
+                 (unsigned) rceb->bEventType,
+                 (unsigned) le16_to_cpu(rceb->wEvent),
+                 (unsigned) rceb->bEventContext,
+                 (long) rceb_size);
+        size = -ENOSPC;
+        if (rceb_size < sizeof(*rceb))
+                goto out;
+        event = le16_to_cpu(rceb->wEvent);
+        type_event_high = rceb->bEventType << 8 | (event & 0xff00) >> 8;
+        for (itr = 0; itr < uwb_est_used; itr++) {
+                d_printf(3, dev, "Checking EST 0x%04x/%04x/%04x\n",
+                        uwb_est[itr].type_event_high, uwb_est[itr].vendor,
+                        uwb_est[itr].product);
+                if (uwb_est[itr].type_event_high != type_event_high)
+                        continue;
+                size = uwb_est_get_size(rc, &uwb_est[itr],
+                                        event & 0x00ff, rceb, rceb_size);
+                /* try more tables that might handle the same type */
+                if (size != -ENOENT)
+                        goto out;
+        }
+        dev_dbg(dev, "event 0x%02x/%04x/%02x: no handlers available; "
+                "RCEB %02x %02x %02x %02x\n",
+                (unsigned) rceb->bEventType,
+                (unsigned) le16_to_cpu(rceb->wEvent),
+                (unsigned) rceb->bEventContext,
+                ptr[0], ptr[1], ptr[2], ptr[3]);
+        size = -ENOENT;
+out:
+        read_unlock_irqrestore(&uwb_est_lock, flags);
+        return size;
+}
+EXPORT_SYMBOL_GPL(uwb_est_find_size);
diff --git a/drivers/uwb/hwa-rc.c b/drivers/uwb/hwa-rc.c
new file mode 100644
index 000000000000..3d26fa0f8ae1
--- /dev/null
+++ b/drivers/uwb/hwa-rc.c
@@ -0,0 +1,926 @@
+/*
+ * WUSB Host Wire Adapter: Radio Control Interface (WUSB[8.6])
+ * Radio Control command/event transport
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * Initialize the Radio Control interface Driver.
+ *
+ * For each device probed, creates an 'struct hwarc' which contains
+ * just the representation of the UWB Radio Controller, and the logic
+ * for reading notifications and passing them to the UWB Core.
+ *
+ * So we initialize all of those, register the UWB Radio Controller
+ * and setup the notification/event handle to pipe the notifications
+ * to the UWB management Daemon.
+ *
+ * Command and event filtering.
+ *
+ * This is the driver for the Radio Control Interface described in WUSB
+ * 1.0. The core UWB module assumes that all drivers are compliant to the
+ * WHCI 0.95 specification. We thus create a filter that parses all
+ * incoming messages from the (WUSB 1.0) device and manipulate them to
+ * conform to the WHCI 0.95 specification. Similarly, outgoing messages
+ * are parsed and manipulated to conform to the WUSB 1.0 compliant messages
+ * that the device expects. Only a few messages are affected:
+ * Affected events:
+ *    UWB_RC_EVT_BEACON
+ *    UWB_RC_EVT_BP_SLOT_CHANGE
+ *    UWB_RC_EVT_DRP_AVAIL
+ *    UWB_RC_EVT_DRP
+ * Affected commands:
+ *    UWB_RC_CMD_SCAN
+ *    UWB_RC_CMD_SET_DRP_IE
+ *
+ *
+ *
+ */
+#include <linux/version.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/usb/wusb.h>
+#include <linux/usb/wusb-wa.h>
+#include <linux/uwb.h>
+#include "uwb-internal.h"
+#define D_LOCAL 1
+#include <linux/uwb/debug.h>
+
+/* The device uses commands and events from the WHCI specification, although
+ * reporting itself as WUSB compliant. */
+#define WUSB_QUIRK_WHCI_CMD_EVT         0x01
+
+/**
+ * Descriptor for an instance of the UWB Radio Control Driver that
+ * attaches to the RCI interface of the Host Wired Adapter.
+ *
+ * Unless there is a lock specific to the 'data members', all access
+ * is protected by uwb_rc->mutex.
+ *
+ * The NEEP (Notification/Event EndPoint) URB (@neep_urb) writes to
+ * @rd_buffer. Note there is no locking because it is perfectly (heh!)
+ * serialized--probe() submits an URB, callback is called, processes
+ * the data (synchronously), submits another URB, and so on. There is
+ * no concurrent access to the buffer.
+ */
+struct hwarc {
+        struct usb_device *usb_dev;
+        struct usb_interface *usb_iface;
+        struct uwb_rc *uwb_rc;          /* UWB host controller */
+        struct urb *neep_urb;           /* Notification endpoint handling */
+        struct edc neep_edc;
+        void *rd_buffer;                /* NEEP read buffer */
+};
+
+
+/* Beacon received notification (WUSB 1.0 [8.6.3.2]) */
+struct uwb_rc_evt_beacon_WUSB_0100 {
+        struct uwb_rceb rceb;
+        u8      bChannelNumber;
+        __le16  wBPSTOffset;
+        u8      bLQI;
+        u8      bRSSI;
+        __le16  wBeaconInfoLength;
+        u8      BeaconInfo[];
+} __attribute__((packed));
+
+/**
+ * Filter WUSB 1.0 BEACON RCV notification to be WHCI 0.95
+ *
+ * @header: the incoming event
+ * @buf_size: size of buffer containing incoming event
+ * @new_size: size of event after filtering completed
+ *
+ * The WHCI 0.95 spec has a "Beacon Type" field. This value is unknown at
+ * the time we receive the beacon from WUSB so we just set it to
+ * UWB_RC_BEACON_TYPE_NEIGHBOR as a default.
+ * The solution below allocates memory upon receipt of every beacon from a
+ * WUSB device. This will deteriorate performance. What is the right way to
+ * do this?
+ */
+static
+int hwarc_filter_evt_beacon_WUSB_0100(struct uwb_rc *rc,
+                                      struct uwb_rceb **header,
+                                      const size_t buf_size,
+                                      size_t *new_size)
+{
+        struct uwb_rc_evt_beacon_WUSB_0100 *be;
+        struct uwb_rc_evt_beacon *newbe;
+        size_t bytes_left, ielength;
+        struct device *dev = &rc->uwb_dev.dev;
+
+        be = container_of(*header, struct uwb_rc_evt_beacon_WUSB_0100, rceb);
+        bytes_left = buf_size;
+        if (bytes_left < sizeof(*be)) {
+                dev_err(dev, "Beacon Received Notification: Not enough data "
+                        "to decode for filtering (%zu vs %zu bytes needed)\n",
+                        bytes_left, sizeof(*be));
+                return -EINVAL;
+        }
+        bytes_left -= sizeof(*be);
+        ielength = le16_to_cpu(be->wBeaconInfoLength);
+        if (bytes_left < ielength) {
+                dev_err(dev, "Beacon Received Notification: Not enough data "
+                        "to decode IEs (%zu vs %zu bytes needed)\n",
+                        bytes_left, ielength);
+                return -EINVAL;
+        }
+        newbe = kzalloc(sizeof(*newbe) + ielength, GFP_ATOMIC);
+        if (newbe == NULL)
+                return -ENOMEM;
+        newbe->rceb = be->rceb;
+        newbe->bChannelNumber = be->bChannelNumber;
+        newbe->bBeaconType = UWB_RC_BEACON_TYPE_NEIGHBOR;
+        newbe->wBPSTOffset = be->wBPSTOffset;
+        newbe->bLQI = be->bLQI;
+        newbe->bRSSI = be->bRSSI;
+        newbe->wBeaconInfoLength = be->wBeaconInfoLength;
+        memcpy(newbe->BeaconInfo, be->BeaconInfo, ielength);
+        *header = &newbe->rceb;
+        *new_size = sizeof(*newbe) + ielength;
+        return 1;  /* calling function will free memory */
+}
+
+
+/* DRP Availability change notification (WUSB 1.0 [8.6.3.8]) */
+struct uwb_rc_evt_drp_avail_WUSB_0100 {
+        struct uwb_rceb rceb;
+        __le16 wIELength;
+        u8 IEData[];
+} __attribute__((packed));
+
+/**
+ * Filter WUSB 1.0 DRP AVAILABILITY CHANGE notification to be WHCI 0.95
+ *
+ * @header: the incoming event
+ * @buf_size: size of buffer containing incoming event
+ * @new_size: size of event after filtering completed
+ */
+static
+int hwarc_filter_evt_drp_avail_WUSB_0100(struct uwb_rc *rc,
+                                         struct uwb_rceb **header,
+                                         const size_t buf_size,
+                                         size_t *new_size)
+{
+        struct uwb_rc_evt_drp_avail_WUSB_0100 *da;
+        struct uwb_rc_evt_drp_avail *newda;
+        struct uwb_ie_hdr *ie_hdr;
+        size_t bytes_left, ielength;
+        struct device *dev = &rc->uwb_dev.dev;
+
+
+        da = container_of(*header, struct uwb_rc_evt_drp_avail_WUSB_0100, rceb);
+        bytes_left = buf_size;
+        if (bytes_left < sizeof(*da)) {
+                dev_err(dev, "Not enough data to decode DRP Avail "
+                        "Notification for filtering. Expected %zu, "
+                        "received %zu.\n", (size_t)sizeof(*da), bytes_left);
+                return -EINVAL;
+        }
+        bytes_left -= sizeof(*da);
+        ielength = le16_to_cpu(da->wIELength);
+        if (bytes_left < ielength) {
+                dev_err(dev, "DRP Avail Notification filter: IE length "
+                        "[%zu bytes] does not match actual length "
+                        "[%zu bytes].\n", ielength, bytes_left);
+                return -EINVAL;
+        }
+        if (ielength < sizeof(*ie_hdr)) {
+                dev_err(dev, "DRP Avail Notification filter: Not enough "
+                        "data to decode IE [%zu bytes, %zu needed]\n",
+                        ielength, sizeof(*ie_hdr));
+                return -EINVAL;
+        }
+        ie_hdr = (void *) da->IEData;
+        if (ie_hdr->length > 32) {
+                dev_err(dev, "DRP Availability Change event has unexpected "
+                        "length for filtering. Expected < 32 bytes, "
+                        "got %zu bytes.\n", (size_t)ie_hdr->length);
+                return -EINVAL;
+        }
+        newda = kzalloc(sizeof(*newda), GFP_ATOMIC);
+        if (newda == NULL)
+                return -ENOMEM;
+        newda->rceb = da->rceb;
+        memcpy(newda->bmp, (u8 *) ie_hdr + sizeof(*ie_hdr), ie_hdr->length);
+        *header = &newda->rceb;
+        *new_size = sizeof(*newda);
+        return 1; /* calling function will free memory */
+}
+
+
+/* DRP notification (WUSB 1.0 [8.6.3.9]) */
+struct uwb_rc_evt_drp_WUSB_0100 {
+        struct uwb_rceb rceb;
+        struct uwb_dev_addr wSrcAddr;
+        u8 bExplicit;
+        __le16 wIELength;
+        u8 IEData[];
+} __attribute__((packed));
+
+/**
+ * Filter WUSB 1.0 DRP Notification to be WHCI 0.95
+ *
+ * @header: the incoming event
+ * @buf_size: size of buffer containing incoming event
+ * @new_size: size of event after filtering completed
+ *
+ * It is hard to manage DRP reservations without having a Reason code.
+ * Unfortunately there is none in the WUSB spec. We just set the default to
+ * DRP IE RECEIVED.
+ * We do not currently use the bBeaconSlotNumber value, so we set this to
+ * zero for now.
+ */
+static
+int hwarc_filter_evt_drp_WUSB_0100(struct uwb_rc *rc,
+                                   struct uwb_rceb **header,
+                                   const size_t buf_size,
+                                   size_t *new_size)
+{
+        struct uwb_rc_evt_drp_WUSB_0100 *drpev;
+        struct uwb_rc_evt_drp *newdrpev;
+        size_t bytes_left, ielength;
+        struct device *dev = &rc->uwb_dev.dev;
+
+        drpev = container_of(*header, struct uwb_rc_evt_drp_WUSB_0100, rceb);
+        bytes_left = buf_size;
+        if (bytes_left < sizeof(*drpev)) {
+                dev_err(dev, "Not enough data to decode DRP Notification "
+                        "for filtering. Expected %zu, received %zu.\n",
+                        (size_t)sizeof(*drpev), bytes_left);
+                return -EINVAL;
+        }
+        ielength = le16_to_cpu(drpev->wIELength);
+        bytes_left -= sizeof(*drpev);
+        if (bytes_left < ielength) {
+                dev_err(dev, "DRP Notification filter: header length [%zu "
+                        "bytes] does not match actual length [%zu "
+                        "bytes].\n", ielength, bytes_left);
+                return -EINVAL;
+        }
+        newdrpev = kzalloc(sizeof(*newdrpev) + ielength, GFP_ATOMIC);
+        if (newdrpev == NULL)
+                return -ENOMEM;
+        newdrpev->rceb = drpev->rceb;
+        newdrpev->src_addr = drpev->wSrcAddr;
+        newdrpev->reason = UWB_DRP_NOTIF_DRP_IE_RCVD;
+        newdrpev->beacon_slot_number = 0;
+        newdrpev->ie_length = drpev->wIELength;
+        memcpy(newdrpev->ie_data, drpev->IEData, ielength);
+        *header = &newdrpev->rceb;
+        *new_size = sizeof(*newdrpev) + ielength;
+        return 1; /* calling function will free memory */
+}
+
+
+/* Scan Command (WUSB 1.0 [8.6.2.5]) */
+struct uwb_rc_cmd_scan_WUSB_0100 {
+        struct uwb_rccb rccb;
+        u8 bChannelNumber;
+        u8 bScanState;
+} __attribute__((packed));
+
+/**
+ * Filter WHCI 0.95 SCAN command to be WUSB 1.0 SCAN command
+ *
+ * @header:   command sent to device (compliant to WHCI 0.95)
+ * @size:     size of command sent to device
+ *
+ * We only reduce the size by two bytes because the WUSB 1.0 scan command
+ * does not have the last field (wStarttime). Also, make sure we don't send
+ * the device an unexpected scan type.
+ */
+static
+int hwarc_filter_cmd_scan_WUSB_0100(struct uwb_rc *rc,
+                                    struct uwb_rccb **header,
+                                    size_t *size)
+{
+        struct uwb_rc_cmd_scan *sc;
+
+        sc = container_of(*header, struct uwb_rc_cmd_scan, rccb);
+
+        if (sc->bScanState == UWB_SCAN_ONLY_STARTTIME)
+                sc->bScanState = UWB_SCAN_ONLY;
+        /* Don't send the last two bytes. */
+        *size -= 2;
+        return 0;
+}
+
+
+/* SET DRP IE command (WUSB 1.0 [8.6.2.7]) */
+struct uwb_rc_cmd_set_drp_ie_WUSB_0100 {
+        struct uwb_rccb rccb;
+        u8 bExplicit;
+        __le16 wIELength;
+        struct uwb_ie_drp IEData[];
+} __attribute__((packed));
+
+/**
+ * Filter WHCI 0.95 SET DRP IE command to be WUSB 1.0 SET DRP IE command
+ *
+ * @header:   command sent to device (compliant to WHCI 0.95)
+ * @size:     size of command sent to device
+ *
+ * WUSB has an extra bExplicit field - we assume always explicit
+ * negotiation so this field is set. The command expected by the device is
+ * thus larger than the one prepared by the driver so we need to
+ * reallocate memory to accommodate this.
+ * We trust the driver to send us the correct data so no checking is done
+ * on incoming data - evn though it is variable length.
+ */
+static
+int hwarc_filter_cmd_set_drp_ie_WUSB_0100(struct uwb_rc *rc,
+                                          struct uwb_rccb **header,
+                                          size_t *size)
+{
+        struct uwb_rc_cmd_set_drp_ie *orgcmd;
+        struct uwb_rc_cmd_set_drp_ie_WUSB_0100 *cmd;
+        size_t ielength;
+
+        orgcmd = container_of(*header, struct uwb_rc_cmd_set_drp_ie, rccb);
+        ielength = le16_to_cpu(orgcmd->wIELength);
+        cmd = kzalloc(sizeof(*cmd) + ielength, GFP_KERNEL);
+        if (cmd == NULL)
+                return -ENOMEM;
+        cmd->rccb = orgcmd->rccb;
+        cmd->bExplicit = 0;
+        cmd->wIELength = orgcmd->wIELength;
+        memcpy(cmd->IEData, orgcmd->IEData, ielength);
+        *header = &cmd->rccb;
+        *size = sizeof(*cmd) + ielength;
+        return 1; /* calling function will free memory */
+}
+
+
+/**
+ * Filter data from WHCI driver to WUSB device
+ *
+ * @header: WHCI 0.95 compliant command from driver
+ * @size:   length of command
+ *
+ * The routine managing commands to the device (uwb_rc_cmd()) will call the
+ * filtering function pointer (if it exists) before it passes any data to
+ * the device. At this time the command has been formatted according to
+ * WHCI 0.95 and is ready to be sent to the device.
+ *
+ * The filter function will be provided with the current command and its
+ * length. The function will manipulate the command if necessary and
+ * potentially reallocate memory for a command that needed more memory that
+ * the given command. If new memory was created the function will return 1
+ * to indicate to the calling function that the memory need to be freed
+ * when not needed any more. The size will contain the new length of the
+ * command.
+ * If memory has not been allocated we rely on the original mechanisms to
+ * free the memory of the command - even when we reduce the value of size.
+ */
+static
+int hwarc_filter_cmd_WUSB_0100(struct uwb_rc *rc, struct uwb_rccb **header,
+                               size_t *size)
+{
+        int result;
+        struct uwb_rccb *rccb = *header;
+        int cmd = le16_to_cpu(rccb->wCommand);
+        switch (cmd) {
+        case UWB_RC_CMD_SCAN:
+                result = hwarc_filter_cmd_scan_WUSB_0100(rc, header, size);
+                break;
+        case UWB_RC_CMD_SET_DRP_IE:
+                result = hwarc_filter_cmd_set_drp_ie_WUSB_0100(rc, header, size);
+                break;
+        default:
+                result = -ENOANO;
+                break;
+        }
+        return result;
+}
+
+
+/**
+ * Filter data from WHCI driver to WUSB device
+ *
+ * @header: WHCI 0.95 compliant command from driver
+ * @size:   length of command
+ *
+ * Filter commands based on which protocol the device supports. The WUSB
+ * errata should be the same as WHCI 0.95 so we do not filter that here -
+ * only WUSB 1.0.
+ */
+static
+int hwarc_filter_cmd(struct uwb_rc *rc, struct uwb_rccb **header,
+                     size_t *size)
+{
+        int result = -ENOANO;
+        if (rc->version == 0x0100)
+                result = hwarc_filter_cmd_WUSB_0100(rc, header, size);
+        return result;
+}
+
+
+/**
+ * Compute return value as sum of incoming value and value at given offset
+ *
+ * @rceb:      event for which we compute the size, it contains a variable
+ *             length field.
+ * @core_size: size of the "non variable" part of the event
+ * @offset:    place in event where the length of the variable part is stored
+ * @buf_size: total length of buffer in which event arrived - we need to make
+ *             sure we read the offset in memory that is still part of the event
+ */
+static
+ssize_t hwarc_get_event_size(struct uwb_rc *rc, const struct uwb_rceb *rceb,
+                             size_t core_size, size_t offset,
+                             const size_t buf_size)
+{
+        ssize_t size = -ENOSPC;
+        const void *ptr = rceb;
+        size_t type_size = sizeof(__le16);
+        struct device *dev = &rc->uwb_dev.dev;
+
+        if (offset + type_size >= buf_size) {
+                dev_err(dev, "Not enough data to read extra size of event "
+                        "0x%02x/%04x/%02x, only got %zu bytes.\n",
+                        rceb->bEventType, le16_to_cpu(rceb->wEvent),
+                        rceb->bEventContext, buf_size);
+                goto out;
+        }
+        ptr += offset;
+        size = core_size + le16_to_cpu(*(__le16 *)ptr);
+out:
+        return size;
+}
+
+
+/* Beacon slot change notification (WUSB 1.0 [8.6.3.5]) */
+struct uwb_rc_evt_bp_slot_change_WUSB_0100 {
+        struct uwb_rceb rceb;
+        u8 bSlotNumber;
+} __attribute__((packed));
+
+
+/**
+ * Filter data from WUSB device to WHCI driver
+ *
+ * @header:      incoming event
+ * @buf_size:    size of buffer in which event arrived
+ * @_event_size: actual size of event in the buffer
+ * @new_size:    size of event after filtered
+ *
+ * We don't know how the buffer is constructed - there may be more than one
+ * event in it so buffer length does not determine event length. We first
+ * determine the expected size of the incoming event. This value is passed
+ * back only if the actual filtering succeeded (so we know the computed
+ * expected size is correct). This value will be zero if
+ * the event did not need any filtering.
+ *
+ * WHCI interprets the BP Slot Change event's data differently than
+ * WUSB. The event sizes are exactly the same. The data field
+ * indicates the new beacon slot in which a RC is transmitting its
+ * beacon. The maximum value of this is 96 (wMacBPLength ECMA-368
+ * 17.16 (Table 117)). We thus know that the WUSB value will not set
+ * the bit bNoSlot, so we don't really do anything (placeholder).
+ */
+static
+int hwarc_filter_event_WUSB_0100(struct uwb_rc *rc, struct uwb_rceb **header,
+                                 const size_t buf_size, size_t *_real_size,
+                                 size_t *_new_size)
+{
+        int result = -ENOANO;
+        struct uwb_rceb *rceb = *header;
+        int event = le16_to_cpu(rceb->wEvent);
+        size_t event_size;
+        size_t core_size, offset;
+
+        if (rceb->bEventType != UWB_RC_CET_GENERAL)
+                goto out;
+        switch (event) {
+        case UWB_RC_EVT_BEACON:
+                core_size = sizeof(struct uwb_rc_evt_beacon_WUSB_0100);
+                offset = offsetof(struct uwb_rc_evt_beacon_WUSB_0100,
+                                  wBeaconInfoLength);
+                event_size = hwarc_get_event_size(rc, rceb, core_size,
+                                                  offset, buf_size);
+                if (event_size < 0)
+                        goto out;
+                *_real_size = event_size;
+                result = hwarc_filter_evt_beacon_WUSB_0100(rc, header,
+                                                           buf_size, _new_size);
+                break;
+        case UWB_RC_EVT_BP_SLOT_CHANGE:
+                *_new_size = *_real_size =
+                        sizeof(struct uwb_rc_evt_bp_slot_change_WUSB_0100);
+                result = 0;
+                break;
+
+        case UWB_RC_EVT_DRP_AVAIL:
+                core_size = sizeof(struct uwb_rc_evt_drp_avail_WUSB_0100);
+                offset = offsetof(struct uwb_rc_evt_drp_avail_WUSB_0100,
+                                  wIELength);
+                event_size = hwarc_get_event_size(rc, rceb, core_size,
+                                                  offset, buf_size);
+                if (event_size < 0)
+                        goto out;
+                *_real_size = event_size;
+                result = hwarc_filter_evt_drp_avail_WUSB_0100(
+                        rc, header, buf_size, _new_size);
+                break;
+
+        case UWB_RC_EVT_DRP:
+                core_size = sizeof(struct uwb_rc_evt_drp_WUSB_0100);
+                offset = offsetof(struct uwb_rc_evt_drp_WUSB_0100, wIELength);
+                event_size = hwarc_get_event_size(rc, rceb, core_size,
+                                                  offset, buf_size);
+                if (event_size < 0)
+                        goto out;
+                *_real_size = event_size;
+                result = hwarc_filter_evt_drp_WUSB_0100(rc, header,
+                                                        buf_size, _new_size);
+                break;
+
+        default:
+                break;
+        }
+out:
+        return result;
+}
+
+/**
+ * Filter data from WUSB device to WHCI driver
+ *
+ * @header:      incoming event
+ * @buf_size:    size of buffer in which event arrived
+ * @_event_size: actual size of event in the buffer
+ * @_new_size:   size of event after filtered
+ *
+ * Filter events based on which protocol the device supports. The WUSB
+ * errata should be the same as WHCI 0.95 so we do not filter that here -
+ * only WUSB 1.0.
+ *
+ * If we don't handle it, we return -ENOANO (why the weird error code?
+ * well, so if I get it, I can pinpoint in the code that raised
+ * it...after all, not too many places use the higher error codes).
+ */
+static
+int hwarc_filter_event(struct uwb_rc *rc, struct uwb_rceb **header,
+                       const size_t buf_size, size_t *_real_size,
+                       size_t *_new_size)
+{
+        int result = -ENOANO;
+        if (rc->version == 0x0100)
+                result =  hwarc_filter_event_WUSB_0100(
+                        rc, header, buf_size, _real_size, _new_size);
+        return result;
+}
+
+
+/**
+ * Execute an UWB RC command on HWA
+ *
+ * @rc:       Instance of a Radio Controller that is a HWA
+ * @cmd:      Buffer containing the RCCB and payload to execute
+ * @cmd_size: Size of the command buffer.
+ *
+ * NOTE: rc's mutex has to be locked
+ */
+static
+int hwarc_cmd(struct uwb_rc *uwb_rc, const struct uwb_rccb *cmd, size_t cmd_size)
+{
+        struct hwarc *hwarc = uwb_rc->priv;
+        return usb_control_msg(
+                hwarc->usb_dev, usb_sndctrlpipe(hwarc->usb_dev, 0),
+                WA_EXEC_RC_CMD, USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+                0, hwarc->usb_iface->cur_altsetting->desc.bInterfaceNumber,
+                (void *) cmd, cmd_size, 100 /* FIXME: this is totally arbitrary */);
+}
+
+static
+int hwarc_reset(struct uwb_rc *uwb_rc)
+{
+        struct hwarc *hwarc = uwb_rc->priv;
+        return usb_reset_device(hwarc->usb_dev);
+}
+
+/**
+ * Callback for the notification and event endpoint
+ *
+ * Check's that everything is fine and then passes the read data to
+ * the notification/event handling mechanism (neh).
+ */
+static
+void hwarc_neep_cb(struct urb *urb)
+{
+        struct hwarc *hwarc = urb->context;
+        struct usb_interface *usb_iface = hwarc->usb_iface;
+        struct device *dev = &usb_iface->dev;
+        int result;
+
+        switch (result = urb->status) {
+        case 0:
+                d_printf(3, dev, "NEEP: receive stat %d, %zu bytes\n",
+                         urb->status, (size_t)urb->actual_length);
+                uwb_rc_neh_grok(hwarc->uwb_rc, urb->transfer_buffer,
+                                urb->actual_length);
+                break;
+        case -ECONNRESET:       /* Not an error, but a controlled situation; */
+        case -ENOENT:           /* (we killed the URB)...so, no broadcast */
+                d_printf(2, dev, "NEEP: URB reset/noent %d\n", urb->status);
+                goto out;
+        case -ESHUTDOWN:        /* going away! */
+                d_printf(2, dev, "NEEP: URB down %d\n", urb->status);
+                goto out;
+        default:                /* On general errors, retry unless it gets ugly */
+                if (edc_inc(&hwarc->neep_edc, EDC_MAX_ERRORS,
+                            EDC_ERROR_TIMEFRAME))
+                        goto error_exceeded;
+                dev_err(dev, "NEEP: URB error %d\n", urb->status);
+        }
+        result = usb_submit_urb(urb, GFP_ATOMIC);
+        d_printf(3, dev, "NEEP: submit %d\n", result);
+        if (result < 0) {
+                dev_err(dev, "NEEP: Can't resubmit URB (%d) resetting device\n",
+                        result);
+                goto error;
+        }
+out:
+        return;
+
+error_exceeded:
+        dev_err(dev, "NEEP: URB max acceptable errors "
+                "exceeded, resetting device\n");
+error:
+        uwb_rc_neh_error(hwarc->uwb_rc, result);
+        uwb_rc_reset_all(hwarc->uwb_rc);
+        return;
+}
+
+static void hwarc_init(struct hwarc *hwarc)
+{
+        edc_init(&hwarc->neep_edc);
+}
+
+/**
+ * Initialize the notification/event endpoint stuff
+ *
+ * Note this is effectively a parallel thread; it knows that
+ * hwarc->uwb_rc always exists because the existence of a 'hwarc'
+ * means that there is a reverence on the hwarc->uwb_rc (see
+ * _probe()), and thus _neep_cb() can execute safely.
+ */
+static int hwarc_neep_init(struct uwb_rc *rc)
+{
+        struct hwarc *hwarc = rc->priv;
+        struct usb_interface *iface = hwarc->usb_iface;
+        struct usb_device *usb_dev = interface_to_usbdev(iface);
+        struct device *dev = &iface->dev;
+        int result;
+        struct usb_endpoint_descriptor *epd;
+
+        epd = &iface->cur_altsetting->endpoint[0].desc;
+        hwarc->rd_buffer = (void *) __get_free_page(GFP_KERNEL);
+        if (hwarc->rd_buffer == NULL) {
+                dev_err(dev, "Unable to allocate notification's read buffer\n");
+                goto error_rd_buffer;
+        }
+        hwarc->neep_urb = usb_alloc_urb(0, GFP_KERNEL);
+        if (hwarc->neep_urb == NULL) {
+                dev_err(dev, "Unable to allocate notification URB\n");
+                goto error_urb_alloc;
+        }
+        usb_fill_int_urb(hwarc->neep_urb, usb_dev,
+                         usb_rcvintpipe(usb_dev, epd->bEndpointAddress),
+                         hwarc->rd_buffer, PAGE_SIZE,
+                         hwarc_neep_cb, hwarc, epd->bInterval);
+        result = usb_submit_urb(hwarc->neep_urb, GFP_ATOMIC);
+        if (result < 0) {
+                dev_err(dev, "Cannot submit notification URB: %d\n", result);
+                goto error_neep_submit;
+        }
+        return 0;
+
+error_neep_submit:
+        usb_free_urb(hwarc->neep_urb);
+error_urb_alloc:
+        free_page((unsigned long)hwarc->rd_buffer);
+error_rd_buffer:
+        return -ENOMEM;
+}
+
+
+/** Clean up all the notification endpoint resources */
+static void hwarc_neep_release(struct uwb_rc *rc)
+{
+        struct hwarc *hwarc = rc->priv;
+
+        usb_kill_urb(hwarc->neep_urb);
+        usb_free_urb(hwarc->neep_urb);
+        free_page((unsigned long)hwarc->rd_buffer);
+}
+
+/**
+ * Get the version from class-specific descriptor
+ *
+ * NOTE: this descriptor comes with the big bundled configuration
+ *       descriptor that includes the interfaces' and endpoints', so
+ *       we just look for it in the cached copy kept by the USB stack.
+ *
+ * NOTE2: We convert LE fields to CPU order.
+ */
+static int hwarc_get_version(struct uwb_rc *rc)
+{
+        int result;
+
+        struct hwarc *hwarc = rc->priv;
+        struct uwb_rc_control_intf_class_desc *descr;
+        struct device *dev = &rc->uwb_dev.dev;
+        struct usb_device *usb_dev = hwarc->usb_dev;
+        char *itr;
+        struct usb_descriptor_header *hdr;
+        size_t itr_size, actconfig_idx;
+        u16 version;
+
+        actconfig_idx = (usb_dev->actconfig - usb_dev->config) /
+                sizeof(usb_dev->config[0]);
+        itr = usb_dev->rawdescriptors[actconfig_idx];
+        itr_size = le16_to_cpu(usb_dev->actconfig->desc.wTotalLength);
+        while (itr_size >= sizeof(*hdr)) {
+                hdr = (struct usb_descriptor_header *) itr;
+                d_printf(3, dev, "Extra device descriptor: "
+                         "type %02x/%u bytes @ %zu (%zu left)\n",
+                         hdr->bDescriptorType, hdr->bLength,
+                         (itr - usb_dev->rawdescriptors[actconfig_idx]),
+                         itr_size);
+                if (hdr->bDescriptorType == USB_DT_CS_RADIO_CONTROL)
+                        goto found;
+                itr += hdr->bLength;
+                itr_size -= hdr->bLength;
+        }
+        dev_err(dev, "cannot find Radio Control Interface Class descriptor\n");
+        return -ENODEV;
+
+found:
+        result = -EINVAL;
+        if (hdr->bLength > itr_size) {  /* is it available? */
+                dev_err(dev, "incomplete Radio Control Interface Class "
+                        "descriptor (%zu bytes left, %u needed)\n",
+                        itr_size, hdr->bLength);
+                goto error;
+        }
+        if (hdr->bLength < sizeof(*descr)) {
+                dev_err(dev, "short Radio Control Interface Class "
+                        "descriptor\n");
+                goto error;
+        }
+        descr = (struct uwb_rc_control_intf_class_desc *) hdr;
+        /* Make LE fields CPU order */
+        version = __le16_to_cpu(descr->bcdRCIVersion);
+        if (version != 0x0100) {
+                dev_err(dev, "Device reports protocol version 0x%04x. We "
+                        "do not support that. \n", version);
+                result = -EINVAL;
+                goto error;
+        }
+        rc->version = version;
+        d_printf(3, dev, "Device supports WUSB protocol version 0x%04x \n",
+                 rc->version);
+        result = 0;
+error:
+        return result;
+}
+
+/*
+ * By creating a 'uwb_rc', we have a reference on it -- that reference
+ * is the one we drop when we disconnect.
+ *
+ * No need to switch altsettings; according to WUSB1.0[8.6.1.1], there
+ * is only one altsetting allowed.
+ */
+static int hwarc_probe(struct usb_interface *iface,
+                       const struct usb_device_id *id)
+{
+        int result;
+        struct uwb_rc *uwb_rc;
+        struct hwarc *hwarc;
+        struct device *dev = &iface->dev;
+
+        result = -ENOMEM;
+        uwb_rc = uwb_rc_alloc();
+        if (uwb_rc == NULL) {
+                dev_err(dev, "unable to allocate RC instance\n");
+                goto error_rc_alloc;
+        }
+        hwarc = kzalloc(sizeof(*hwarc), GFP_KERNEL);
+        if (hwarc == NULL) {
+                dev_err(dev, "unable to allocate HWA RC instance\n");
+                goto error_alloc;
+        }
+        hwarc_init(hwarc);
+        hwarc->usb_dev = usb_get_dev(interface_to_usbdev(iface));
+        hwarc->usb_iface = usb_get_intf(iface);
+        hwarc->uwb_rc = uwb_rc;
+
+        uwb_rc->owner = THIS_MODULE;
+        uwb_rc->start = hwarc_neep_init;
+        uwb_rc->stop  = hwarc_neep_release;
+        uwb_rc->cmd   = hwarc_cmd;
+        uwb_rc->reset = hwarc_reset;
+        if (id->driver_info & WUSB_QUIRK_WHCI_CMD_EVT) {
+                uwb_rc->filter_cmd   = NULL;
+                uwb_rc->filter_event = NULL;
+        } else {
+                uwb_rc->filter_cmd   = hwarc_filter_cmd;
+                uwb_rc->filter_event = hwarc_filter_event;
+        }
+
+        result = uwb_rc_add(uwb_rc, dev, hwarc);
+        if (result < 0)
+                goto error_rc_add;
+        result = hwarc_get_version(uwb_rc);
+        if (result < 0) {
+                dev_err(dev, "cannot retrieve version of RC \n");
+                goto error_get_version;
+        }
+        usb_set_intfdata(iface, hwarc);
+        return 0;
+
+error_get_version:
+        uwb_rc_rm(uwb_rc);
+error_rc_add:
+        usb_put_intf(iface);
+        usb_put_dev(hwarc->usb_dev);
+error_alloc:
+        uwb_rc_put(uwb_rc);
+error_rc_alloc:
+        return result;
+}
+
+static void hwarc_disconnect(struct usb_interface *iface)
+{
+        struct hwarc *hwarc = usb_get_intfdata(iface);
+        struct uwb_rc *uwb_rc = hwarc->uwb_rc;
+
+        usb_set_intfdata(hwarc->usb_iface, NULL);
+        uwb_rc_rm(uwb_rc);
+        usb_put_intf(hwarc->usb_iface);
+        usb_put_dev(hwarc->usb_dev);
+        d_printf(1, &hwarc->usb_iface->dev, "freed hwarc %p\n", hwarc);
+        kfree(hwarc);
+        uwb_rc_put(uwb_rc);     /* when creating the device, refcount = 1 */
+}
+
+/** USB device ID's that we handle */
+static struct usb_device_id hwarc_id_table[] = {
+        /* D-Link DUB-1210 */
+        { USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x3d02, 0xe0, 0x01, 0x02),
+          .driver_info = WUSB_QUIRK_WHCI_CMD_EVT },
+        /* Intel i1480 (using firmware 1.3PA2-20070828) */
+        { USB_DEVICE_AND_INTERFACE_INFO(0x8086, 0x0c3b, 0xe0, 0x01, 0x02),
+          .driver_info = WUSB_QUIRK_WHCI_CMD_EVT },
+        /* Generic match for the Radio Control interface */
+        { USB_INTERFACE_INFO(0xe0, 0x01, 0x02), },
+        { },
+};
+MODULE_DEVICE_TABLE(usb, hwarc_id_table);
+
+static struct usb_driver hwarc_driver = {
+        .name =         "hwa-rc",
+        .probe =        hwarc_probe,
+        .disconnect =   hwarc_disconnect,
+        .id_table =     hwarc_id_table,
+};
+
+static int __init hwarc_driver_init(void)
+{
+        int result;
+        result = usb_register(&hwarc_driver);
+        if (result < 0)
+                printk(KERN_ERR "HWA-RC: Cannot register USB driver: %d\n",
+                       result);
+        return result;
+
+}
+module_init(hwarc_driver_init);
+
+static void __exit hwarc_driver_exit(void)
+{
+        usb_deregister(&hwarc_driver);
+}
+module_exit(hwarc_driver_exit);
+
+MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
+MODULE_DESCRIPTION("Host Wireless Adapter Radio Control Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/uwb/i1480/Makefile b/drivers/uwb/i1480/Makefile
new file mode 100644
index 000000000000..212bbc7d4c32
--- /dev/null
+++ b/drivers/uwb/i1480/Makefile
@@ -0,0 +1,2 @@
+obj-$(CONFIG_UWB_I1480U)        += dfu/ i1480-est.o
+obj-$(CONFIG_UWB_I1480U_WLP)    += i1480u-wlp/
diff --git a/drivers/uwb/i1480/dfu/Makefile b/drivers/uwb/i1480/dfu/Makefile
new file mode 100644
index 000000000000..bd1b9f25424c
--- /dev/null
+++ b/drivers/uwb/i1480/dfu/Makefile
@@ -0,0 +1,9 @@
+obj-$(CONFIG_UWB_I1480U)        += i1480-dfu-usb.o
+
+i1480-dfu-usb-objs := \
+        dfu.o   \
+        mac.o   \
+        phy.o   \
+        usb.o
+
+
diff --git a/drivers/uwb/i1480/dfu/dfu.c b/drivers/uwb/i1480/dfu/dfu.c
new file mode 100644
index 000000000000..9097b3b30385
--- /dev/null
+++ b/drivers/uwb/i1480/dfu/dfu.c
@@ -0,0 +1,217 @@
+/*
+ * Intel Wireless UWB Link 1480
+ * Main driver
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * Common code for firmware upload used by the USB and PCI version;
+ * i1480_fw_upload() takes a device descriptor and uses the function
+ * pointers it provides to upload firmware and prepare the PHY.
+ *
+ * As well, provides common functions used by the rest of the code.
+ */
+#include "i1480-dfu.h"
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/pci.h>
+#include <linux/device.h>
+#include <linux/uwb.h>
+#include <linux/random.h>
+
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+/**
+ * i1480_rceb_check - Check RCEB for expected field values
+ * @i1480: pointer to device for which RCEB is being checked
+ * @rceb: RCEB being checked
+ * @cmd: which command the RCEB is related to
+ * @context: expected context
+ * @expected_type: expected event type
+ * @expected_event: expected event
+ *
+ * If @cmd is NULL, do not print error messages, but still return an error
+ * code.
+ *
+ * Return 0 if @rceb matches the expected values, -EINVAL otherwise.
+ */
+int i1480_rceb_check(const struct i1480 *i1480, const struct uwb_rceb *rceb,
+                     const char *cmd, u8 context, u8 expected_type,
+                     unsigned expected_event)
+{
+        int result = 0;
+        struct device *dev = i1480->dev;
+        if (rceb->bEventContext != context) {
+                if (cmd)
+                        dev_err(dev, "%s: unexpected context id 0x%02x "
+                                "(expected 0x%02x)\n", cmd,
+                                rceb->bEventContext, context);
+                result = -EINVAL;
+        }
+        if (rceb->bEventType != expected_type) {
+                if (cmd)
+                        dev_err(dev, "%s: unexpected event type 0x%02x "
+                                "(expected 0x%02x)\n", cmd,
+                                rceb->bEventType, expected_type);
+                result = -EINVAL;
+        }
+        if (le16_to_cpu(rceb->wEvent) != expected_event) {
+                if (cmd)
+                        dev_err(dev, "%s: unexpected event 0x%04x "
+                                "(expected 0x%04x)\n", cmd,
+                                le16_to_cpu(rceb->wEvent), expected_event);
+                result = -EINVAL;
+        }
+        return result;
+}
+EXPORT_SYMBOL_GPL(i1480_rceb_check);
+
+
+/**
+ * Execute a Radio Control Command
+ *
+ * Command data has to be in i1480->cmd_buf.
+ *
+ * @returns size of the reply data filled in i1480->evt_buf or < 0 errno
+ *          code on error.
+ */
+ssize_t i1480_cmd(struct i1480 *i1480, const char *cmd_name, size_t cmd_size,
+                  size_t reply_size)
+{
+        ssize_t result;
+        struct uwb_rceb *reply = i1480->evt_buf;
+        struct uwb_rccb *cmd = i1480->cmd_buf;
+        u16 expected_event = reply->wEvent;
+        u8 expected_type = reply->bEventType;
+        u8 context;
+
+        d_fnstart(3, i1480->dev, "(%p, %s, %zu)\n", i1480, cmd_name, cmd_size);
+        init_completion(&i1480->evt_complete);
+        i1480->evt_result = -EINPROGRESS;
+        do {
+                get_random_bytes(&context, 1);
+        } while (context == 0x00 || context == 0xff);
+        cmd->bCommandContext = context;
+        result = i1480->cmd(i1480, cmd_name, cmd_size);
+        if (result < 0)
+                goto error;
+        /* wait for the callback to report a event was received */
+        result = wait_for_completion_interruptible_timeout(
+                &i1480->evt_complete, HZ);
+        if (result == 0) {
+                result = -ETIMEDOUT;
+                goto error;
+        }
+        if (result < 0)
+                goto error;
+        result = i1480->evt_result;
+        if (result < 0) {
+                dev_err(i1480->dev, "%s: command reply reception failed: %zd\n",
+                        cmd_name, result);
+                goto error;
+        }
+        /*
+         * Firmware versions >= 1.4.12224 for IOGear GUWA100U generate a
+         * spurious notification after firmware is downloaded. So check whether
+         * the receibed RCEB is such notification before assuming that the
+         * command has failed.
+         */
+        if (i1480_rceb_check(i1480, i1480->evt_buf, NULL,
+                             0, 0xfd, 0x0022) == 0) {
+                /* Now wait for the actual RCEB for this command. */
+                result = i1480->wait_init_done(i1480);
+                if (result < 0)
+                        goto error;
+                result = i1480->evt_result;
+        }
+        if (result != reply_size) {
+                dev_err(i1480->dev, "%s returned only %zu bytes, %zu expected\n",
+                        cmd_name, result, reply_size);
+                result = -EINVAL;
+                goto error;
+        }
+        /* Verify we got the right event in response */
+        result = i1480_rceb_check(i1480, i1480->evt_buf, cmd_name, context,
+                                  expected_type, expected_event);
+error:
+        d_fnend(3, i1480->dev, "(%p, %s, %zu) = %zd\n",
+                i1480, cmd_name, cmd_size, result);
+        return result;
+}
+EXPORT_SYMBOL_GPL(i1480_cmd);
+
+
+static
+int i1480_print_state(struct i1480 *i1480)
+{
+        int result;
+        u32 *buf = (u32 *) i1480->cmd_buf;
+
+        result = i1480->read(i1480, 0x80080000, 2 * sizeof(*buf));
+        if (result < 0) {
+                dev_err(i1480->dev, "cannot read U & L states: %d\n", result);
+                goto error;
+        }
+        dev_info(i1480->dev, "state U 0x%08x, L 0x%08x\n", buf[0], buf[1]);
+error:
+        return result;
+}
+
+
+/*
+ * PCI probe, firmware uploader
+ *
+ * _mac_fw_upload() will call rc_setup(), which needs an rc_release().
+ */
+int i1480_fw_upload(struct i1480 *i1480)
+{
+        int result;
+
+        result = i1480_pre_fw_upload(i1480);    /* PHY pre fw */
+        if (result < 0 && result != -ENOENT) {
+                i1480_print_state(i1480);
+                goto error;
+        }
+        result = i1480_mac_fw_upload(i1480);    /* MAC fw */
+        if (result < 0) {
+                if (result == -ENOENT)
+                        dev_err(i1480->dev, "Cannot locate MAC FW file '%s'\n",
+                                i1480->mac_fw_name);
+                else
+                        i1480_print_state(i1480);
+                goto error;
+        }
+        result = i1480_phy_fw_upload(i1480);    /* PHY fw */
+        if (result < 0 && result != -ENOENT) {
+                i1480_print_state(i1480);
+                goto error_rc_release;
+        }
+        /*
+         * FIXME: find some reliable way to check whether firmware is running
+         * properly. Maybe use some standard request that has no side effects?
+         */
+        dev_info(i1480->dev, "firmware uploaded successfully\n");
+error_rc_release:
+        if (i1480->rc_release)
+                i1480->rc_release(i1480);
+        result = 0;
+error:
+        return result;
+}
+EXPORT_SYMBOL_GPL(i1480_fw_upload);
diff --git a/drivers/uwb/i1480/dfu/i1480-dfu.h b/drivers/uwb/i1480/dfu/i1480-dfu.h
new file mode 100644
index 000000000000..46f45e800f36
--- /dev/null
+++ b/drivers/uwb/i1480/dfu/i1480-dfu.h
@@ -0,0 +1,260 @@
+/*
+ * i1480 Device Firmware Upload
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * This driver is the firmware uploader for the Intel Wireless UWB
+ * Link 1480 device (both in the USB and PCI incarnations).
+ *
+ * The process is quite simple: we stop the device, write the firmware
+ * to its memory and then restart it. Wait for the device to let us
+ * know it is done booting firmware. Ready.
+ *
+ * We might have to upload before or after a phy firmware (which might
+ * be done in two methods, using a normal firmware image or through
+ * the MPI port).
+ *
+ * Because USB and PCI use common methods, we just make ops out of the
+ * common operations (read, write, wait_init_done and cmd) and
+ * implement them in usb.c and pci.c.
+ *
+ * The flow is (some parts omitted):
+ *
+ * i1480_{usb,pci}_probe()        On enumerate/discovery
+ *   i1480_fw_upload()
+ *     i1480_pre_fw_upload()
+ *       __mac_fw_upload()
+ *         fw_hdrs_load()
+ *         mac_fw_hdrs_push()
+ *           i1480->write()       [i1480_{usb,pci}_write()]
+ *           i1480_fw_cmp()
+ *             i1480->read()      [i1480_{usb,pci}_read()]
+ *     i1480_mac_fw_upload()
+ *       __mac_fw_upload()
+ *       i1480->setup(()
+ *       i1480->wait_init_done()
+ *       i1480_cmd_reset()
+ *         i1480->cmd()           [i1480_{usb,pci}_cmd()]
+ *         ...
+ *     i1480_phy_fw_upload()
+ *       request_firmware()
+ *       i1480_mpi_write()
+ *         i1480->cmd()           [i1480_{usb,pci}_cmd()]
+ *
+ * Once the probe function enumerates the device and uploads the
+ * firmware, we just exit with -ENODEV, as we don't really want to
+ * attach to the device.
+ */
+#ifndef __i1480_DFU_H__
+#define __i1480_DFU_H__
+
+#include <linux/uwb/spec.h>
+#include <linux/types.h>
+#include <linux/completion.h>
+
+#define i1480_FW_UPLOAD_MODE_MASK (cpu_to_le32(0x00000018))
+
+#if i1480_FW > 0x00000302
+#define i1480_RCEB_EXTENDED
+#endif
+
+struct uwb_rccb;
+struct uwb_rceb;
+
+/*
+ * Common firmware upload handlers
+ *
+ * Normally you embed this struct in another one specific to your hw.
+ *
+ * @write       Write to device's memory from buffer.
+ * @read        Read from device's memory to i1480->evt_buf.
+ * @setup       Setup device after basic firmware is uploaded
+ * @wait_init_done
+ *              Wait for the device to send a notification saying init
+ *              is done.
+ * @cmd         FOP for issuing the command to the hardware. The
+ *              command data is contained in i1480->cmd_buf and the size
+ *              is supplied as an argument. The command replied is put
+ *              in i1480->evt_buf and the size in i1480->evt_result (or if
+ *              an error, a < 0 errno code).
+ *
+ * @cmd_buf     Memory buffer used to send commands to the device.
+ *              Allocated by the upper layers i1480_fw_upload().
+ *              Size has to be @buf_size.
+ * @evt_buf     Memory buffer used to place the async notifications
+ *              received by the hw. Allocated by the upper layers
+ *              i1480_fw_upload().
+ *              Size has to be @buf_size.
+ * @cmd_complete
+ *              Low level driver uses this to notify code waiting afor
+ *              an event that the event has arrived and data is in
+ *              i1480->evt_buf (and size/result in i1480->evt_result).
+ * @hw_rev
+ *              Use this value to activate dfu code to support new revisions
+ *              of hardware.  i1480_init() sets this to a default value.
+ *              It should be updated by the USB and PCI code.
+ */
+struct i1480 {
+        struct device *dev;
+
+        int (*write)(struct i1480 *, u32 addr, const void *, size_t);
+        int (*read)(struct i1480 *, u32 addr, size_t);
+        int (*rc_setup)(struct i1480 *);
+        void (*rc_release)(struct i1480 *);
+        int (*wait_init_done)(struct i1480 *);
+        int (*cmd)(struct i1480 *, const char *cmd_name, size_t cmd_size);
+        const char *pre_fw_name;
+        const char *mac_fw_name;
+        const char *mac_fw_name_deprecate;      /* FIXME: Will go away */
+        const char *phy_fw_name;
+        u8 hw_rev;
+
+        size_t buf_size;        /* size of both evt_buf and cmd_buf */
+        void *evt_buf, *cmd_buf;
+        ssize_t evt_result;
+        struct completion evt_complete;
+};
+
+static inline
+void i1480_init(struct i1480 *i1480)
+{
+        i1480->hw_rev = 1;
+        init_completion(&i1480->evt_complete);
+}
+
+extern int i1480_fw_upload(struct i1480 *);
+extern int i1480_pre_fw_upload(struct i1480 *);
+extern int i1480_mac_fw_upload(struct i1480 *);
+extern int i1480_phy_fw_upload(struct i1480 *);
+extern ssize_t i1480_cmd(struct i1480 *, const char *, size_t, size_t);
+extern int i1480_rceb_check(const struct i1480 *,
+                            const struct uwb_rceb *, const char *, u8,
+                            u8, unsigned);
+
+enum {
+        /* Vendor specific command type */
+        i1480_CET_VS1 =                 0xfd,
+        /* i1480 commands */
+        i1480_CMD_SET_IP_MAS =          0x000e,
+        i1480_CMD_GET_MAC_PHY_INFO =    0x0003,
+        i1480_CMD_MPI_WRITE =           0x000f,
+        i1480_CMD_MPI_READ =            0x0010,
+        /* i1480 events */
+#if i1480_FW > 0x00000302
+        i1480_EVT_CONFIRM =             0x0002,
+        i1480_EVT_RM_INIT_DONE =        0x0101,
+        i1480_EVT_DEV_ADD =             0x0103,
+        i1480_EVT_DEV_RM =              0x0104,
+        i1480_EVT_DEV_ID_CHANGE =       0x0105,
+        i1480_EVT_GET_MAC_PHY_INFO =    i1480_CMD_GET_MAC_PHY_INFO,
+#else
+        i1480_EVT_CONFIRM =             0x0002,
+        i1480_EVT_RM_INIT_DONE =        0x0101,
+        i1480_EVT_DEV_ADD =             0x0103,
+        i1480_EVT_DEV_RM =              0x0104,
+        i1480_EVT_DEV_ID_CHANGE =       0x0105,
+        i1480_EVT_GET_MAC_PHY_INFO =    i1480_EVT_CONFIRM,
+#endif
+};
+
+
+struct i1480_evt_confirm {
+        struct uwb_rceb rceb;
+#ifdef i1480_RCEB_EXTENDED
+        __le16 wParamLength;
+#endif
+        u8 bResultCode;
+} __attribute__((packed));
+
+
+struct i1480_rceb {
+        struct uwb_rceb rceb;
+#ifdef i1480_RCEB_EXTENDED
+        __le16 wParamLength;
+#endif
+} __attribute__((packed));
+
+
+/**
+ * Get MAC & PHY Information confirm event structure
+ *
+ * Confirm event returned by the command.
+ */
+struct i1480_evt_confirm_GMPI {
+#if i1480_FW > 0x00000302
+        struct uwb_rceb rceb;
+        __le16 wParamLength;
+        __le16 status;
+        u8 mac_addr[6];         /* EUI-64 bit IEEE address [still 8 bytes?] */
+        u8 dev_addr[2];
+        __le16 mac_fw_rev;      /* major = v >> 8; minor = v & 0xff */
+        u8 hw_rev;
+        u8 phy_vendor;
+        u8 phy_rev;             /* major v = >> 8; minor = v & 0xff */
+        __le16 mac_caps;
+        u8 phy_caps[3];
+        u8 key_stores;
+        __le16 mcast_addr_stores;
+        u8 sec_mode_supported;
+#else
+        struct uwb_rceb rceb;
+        u8 status;
+        u8 mac_addr[8];         /* EUI-64 bit IEEE address [still 8 bytes?] */
+        u8 dev_addr[2];
+        __le16 mac_fw_rev;      /* major = v >> 8; minor = v & 0xff */
+        __le16 phy_fw_rev;      /* major v = >> 8; minor = v & 0xff */
+        __le16 mac_caps;
+        u8 phy_caps;
+        u8 key_stores;
+        __le16 mcast_addr_stores;
+        u8 sec_mode_supported;
+#endif
+} __attribute__((packed));
+
+
+struct i1480_cmd_mpi_write {
+        struct uwb_rccb rccb;
+        __le16 size;
+        u8 data[];
+};
+
+
+struct i1480_cmd_mpi_read {
+        struct uwb_rccb rccb;
+        __le16 size;
+        struct {
+                u8 page, offset;
+        } __attribute__((packed)) data[];
+} __attribute__((packed));
+
+
+struct i1480_evt_mpi_read {
+        struct uwb_rceb rceb;
+#ifdef i1480_RCEB_EXTENDED
+        __le16 wParamLength;
+#endif
+        u8 bResultCode;
+        __le16 size;
+        struct {
+                u8 page, offset, value;
+        } __attribute__((packed)) data[];
+} __attribute__((packed));
+
+
+#endif /* #ifndef __i1480_DFU_H__ */
diff --git a/drivers/uwb/i1480/dfu/mac.c b/drivers/uwb/i1480/dfu/mac.c
new file mode 100644
index 000000000000..2e4d8f07c165
--- /dev/null
+++ b/drivers/uwb/i1480/dfu/mac.c
@@ -0,0 +1,527 @@
+/*
+ * Intel Wireless UWB Link 1480
+ * MAC Firmware upload implementation
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * Implementation of the code for parsing the firmware file (extract
+ * the headers and binary code chunks) in the fw_*() functions. The
+ * code to upload pre and mac firmwares is the same, so it uses a
+ * common entry point in __mac_fw_upload(), which uses the i1480
+ * function pointers to push the firmware to the device.
+ */
+#include <linux/delay.h>
+#include <linux/firmware.h>
+#include <linux/uwb.h>
+#include "i1480-dfu.h"
+
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+/*
+ * Descriptor for a continuous segment of MAC fw data
+ */
+struct fw_hdr {
+        unsigned long address;
+        size_t length;
+        const u32 *bin;
+        struct fw_hdr *next;
+};
+
+
+/* Free a chain of firmware headers */
+static
+void fw_hdrs_free(struct fw_hdr *hdr)
+{
+        struct fw_hdr *next;
+
+        while (hdr) {
+                next = hdr->next;
+                kfree(hdr);
+                hdr = next;
+        }
+}
+
+
+/* Fill a firmware header descriptor from a memory buffer */
+static
+int fw_hdr_load(struct i1480 *i1480, struct fw_hdr *hdr, unsigned hdr_cnt,
+                const char *_data, const u32 *data_itr, const u32 *data_top)
+{
+        size_t hdr_offset =  (const char *) data_itr - _data;
+        size_t remaining_size = (void *) data_top - (void *) data_itr;
+        if (data_itr + 2 > data_top) {
+                dev_err(i1480->dev, "fw hdr #%u/%zu: EOF reached in header at "
+                       "offset %zu, limit %zu\n",
+                       hdr_cnt, hdr_offset,
+                       (const char *) data_itr + 2 - _data,
+                       (const char *) data_top - _data);
+                return -EINVAL;
+        }
+        hdr->next = NULL;
+        hdr->address = le32_to_cpu(*data_itr++);
+        hdr->length = le32_to_cpu(*data_itr++);
+        hdr->bin = data_itr;
+        if (hdr->length > remaining_size) {
+                dev_err(i1480->dev, "fw hdr #%u/%zu: EOF reached in data; "
+                       "chunk too long (%zu bytes), only %zu left\n",
+                       hdr_cnt, hdr_offset, hdr->length, remaining_size);
+                return -EINVAL;
+        }
+        return 0;
+}
+
+
+/**
+ * Get a buffer where the firmware is supposed to be and create a
+ * chain of headers linking them together.
+ *
+ * @phdr: where to place the pointer to the first header (headers link
+ *        to the next via the @hdr->next ptr); need to free the whole
+ *        chain when done.
+ *
+ * @_data: Pointer to the data buffer.
+ *
+ * @_data_size: Size of the data buffer (bytes); data size has to be a
+ *              multiple of 4. Function will fail if not.
+ *
+ * Goes over the whole binary blob; reads the first chunk and creates
+ * a fw hdr from it (which points to where the data is in @_data and
+ * the length of the chunk); then goes on to the next chunk until
+ * done. Each header is linked to the next.
+ */
+static
+int fw_hdrs_load(struct i1480 *i1480, struct fw_hdr **phdr,
+                 const char *_data, size_t data_size)
+{
+        int result;
+        unsigned hdr_cnt = 0;
+        u32 *data = (u32 *) _data, *data_itr, *data_top;
+        struct fw_hdr *hdr, **prev_hdr = phdr;
+
+        result = -EINVAL;
+        /* Check size is ok and pointer is aligned */
+        if (data_size % sizeof(u32) != 0)
+                goto error;
+        if ((unsigned long) _data % sizeof(u16) != 0)
+                goto error;
+        *phdr = NULL;
+        data_itr = data;
+        data_top = (u32 *) (_data + data_size);
+        while (data_itr < data_top) {
+                result = -ENOMEM;
+                hdr = kmalloc(sizeof(*hdr), GFP_KERNEL);
+                if (hdr == NULL) {
+                        dev_err(i1480->dev, "Cannot allocate fw header "
+                               "for chunk #%u\n", hdr_cnt);
+                        goto error_alloc;
+                }
+                result = fw_hdr_load(i1480, hdr, hdr_cnt,
+                                     _data, data_itr, data_top);
+                if (result < 0)
+                        goto error_load;
+                data_itr += 2 + hdr->length;
+                *prev_hdr = hdr;
+                prev_hdr = &hdr->next;
+                hdr_cnt++;
+        };
+        *prev_hdr = NULL;
+        return 0;
+
+error_load:
+        kfree(hdr);
+error_alloc:
+        fw_hdrs_free(*phdr);
+error:
+        return result;
+}
+
+
+/**
+ * Compares a chunk of fw with one in the devices's memory
+ *
+ * @i1480:     Device instance
+ * @hdr:     Pointer to the firmware chunk
+ * @returns: 0 if equal, < 0 errno on error. If > 0, it is the offset
+ *           where the difference was found (plus one).
+ *
+ * Kind of dirty and simplistic, but does the trick in both the PCI
+ * and USB version. We do a quick[er] memcmp(), and if it fails, we do
+ * a byte-by-byte to find the offset.
+ */
+static
+ssize_t i1480_fw_cmp(struct i1480 *i1480, struct fw_hdr *hdr)
+{
+        ssize_t result = 0;
+        u32 src_itr = 0, cnt;
+        size_t size = hdr->length*sizeof(hdr->bin[0]);
+        size_t chunk_size;
+        u8 *bin = (u8 *) hdr->bin;
+
+        while (size > 0) {
+                chunk_size = size < i1480->buf_size ? size : i1480->buf_size;
+                result = i1480->read(i1480, hdr->address + src_itr, chunk_size);
+                if (result < 0) {
+                        dev_err(i1480->dev, "error reading for verification: "
+                                "%zd\n", result);
+                        goto error;
+                }
+                if (memcmp(i1480->cmd_buf, bin + src_itr, result)) {
+                        u8 *buf = i1480->cmd_buf;
+                        d_printf(2, i1480->dev,
+                                 "original data @ %p + %u, %zu bytes\n",
+                                 bin, src_itr, result);
+                        d_dump(4, i1480->dev, bin + src_itr, result);
+                        for (cnt = 0; cnt < result; cnt++)
+                                if (bin[src_itr + cnt] != buf[cnt]) {
+                                        dev_err(i1480->dev, "byte failed at "
+                                                "src_itr %u cnt %u [0x%02x "
+                                                "vs 0x%02x]\n", src_itr, cnt,
+                                                bin[src_itr + cnt], buf[cnt]);
+                                        result = src_itr + cnt + 1;
+                                        goto cmp_failed;
+                                }
+                }
+                src_itr += result;
+                size -= result;
+        }
+        result = 0;
+error:
+cmp_failed:
+        return result;
+}
+
+
+/**
+ * Writes firmware headers to the device.
+ *
+ * @prd:     PRD instance
+ * @hdr:     Processed firmware
+ * @returns: 0 if ok, < 0 errno on error.
+ */
+static
+int mac_fw_hdrs_push(struct i1480 *i1480, struct fw_hdr *hdr,
+                     const char *fw_name, const char *fw_tag)
+{
+        struct device *dev = i1480->dev;
+        ssize_t result = 0;
+        struct fw_hdr *hdr_itr;
+        int verif_retry_count;
+
+        d_fnstart(3, dev, "(%p, %p)\n", i1480, hdr);
+        /* Now, header by header, push them to the hw */
+        for (hdr_itr = hdr; hdr_itr != NULL; hdr_itr = hdr_itr->next) {
+                verif_retry_count = 0;
+retry:
+                dev_dbg(dev, "fw chunk (%zu @ 0x%08lx)\n",
+                        hdr_itr->length * sizeof(hdr_itr->bin[0]),
+                        hdr_itr->address);
+                result = i1480->write(i1480, hdr_itr->address, hdr_itr->bin,
+                                    hdr_itr->length*sizeof(hdr_itr->bin[0]));
+                if (result < 0) {
+                        dev_err(dev, "%s fw '%s': write failed (%zuB @ 0x%lx):"
+                                " %zd\n", fw_tag, fw_name,
+                                hdr_itr->length * sizeof(hdr_itr->bin[0]),
+                                hdr_itr->address, result);
+                        break;
+                }
+                result = i1480_fw_cmp(i1480, hdr_itr);
+                if (result < 0) {
+                        dev_err(dev, "%s fw '%s': verification read "
+                                "failed (%zuB @ 0x%lx): %zd\n",
+                                fw_tag, fw_name,
+                                hdr_itr->length * sizeof(hdr_itr->bin[0]),
+                                hdr_itr->address, result);
+                        break;
+                }
+                if (result > 0) {       /* Offset where it failed + 1 */
+                        result--;
+                        dev_err(dev, "%s fw '%s': WARNING: verification "
+                                "failed at 0x%lx: retrying\n",
+                                fw_tag, fw_name, hdr_itr->address + result);
+                        if (++verif_retry_count < 3)
+                                goto retry;     /* write this block again! */
+                        dev_err(dev, "%s fw '%s': verification failed at 0x%lx: "
+                                "tried %d times\n", fw_tag, fw_name,
+                                hdr_itr->address + result, verif_retry_count);
+                        result = -EINVAL;
+                        break;
+                }
+        }
+        d_fnend(3, dev, "(%zd)\n", result);
+        return result;
+}
+
+
+/** Puts the device in firmware upload mode.*/
+static
+int mac_fw_upload_enable(struct i1480 *i1480)
+{
+        int result;
+        u32 reg = 0x800000c0;
+        u32 *buffer = (u32 *)i1480->cmd_buf;
+
+        if (i1480->hw_rev > 1)
+                reg = 0x8000d0d4;
+        result = i1480->read(i1480, reg, sizeof(u32));
+        if (result < 0)
+                goto error_cmd;
+        *buffer &= ~i1480_FW_UPLOAD_MODE_MASK;
+        result = i1480->write(i1480, reg, buffer, sizeof(u32));
+        if (result < 0)
+                goto error_cmd;
+        return 0;
+error_cmd:
+        dev_err(i1480->dev, "can't enable fw upload mode: %d\n", result);
+        return result;
+}
+
+
+/** Gets the device out of firmware upload mode. */
+static
+int mac_fw_upload_disable(struct i1480 *i1480)
+{
+        int result;
+        u32 reg = 0x800000c0;
+        u32 *buffer = (u32 *)i1480->cmd_buf;
+
+        if (i1480->hw_rev > 1)
+                reg = 0x8000d0d4;
+        result = i1480->read(i1480, reg, sizeof(u32));
+        if (result < 0)
+                goto error_cmd;
+        *buffer |= i1480_FW_UPLOAD_MODE_MASK;
+        result = i1480->write(i1480, reg, buffer, sizeof(u32));
+        if (result < 0)
+                goto error_cmd;
+        return 0;
+error_cmd:
+        dev_err(i1480->dev, "can't disable fw upload mode: %d\n", result);
+        return result;
+}
+
+
+
+/**
+ * Generic function for uploading a MAC firmware.
+ *
+ * @i1480:     Device instance
+ * @fw_name: Name of firmware file to upload.
+ * @fw_tag:  Name of the firmware type (for messages)
+ *           [eg: MAC, PRE]
+ * @do_wait: Wait for device to emit initialization done message (0
+ *           for PRE fws, 1 for MAC fws).
+ * @returns: 0 if ok, < 0 errno on error.
+ */
+static
+int __mac_fw_upload(struct i1480 *i1480, const char *fw_name,
+                    const char *fw_tag)
+{
+        int result;
+        const struct firmware *fw;
+        struct fw_hdr *fw_hdrs;
+
+        d_fnstart(3, i1480->dev, "(%p, %s, %s)\n", i1480, fw_name, fw_tag);
+        result = request_firmware(&fw, fw_name, i1480->dev);
+        if (result < 0) /* Up to caller to complain on -ENOENT */
+                goto out;
+        d_printf(3, i1480->dev, "%s fw '%s': uploading\n", fw_tag, fw_name);
+        result = fw_hdrs_load(i1480, &fw_hdrs, fw->data, fw->size);
+        if (result < 0) {
+                dev_err(i1480->dev, "%s fw '%s': failed to parse firmware "
+                        "file: %d\n", fw_tag, fw_name, result);
+                goto out_release;
+        }
+        result = mac_fw_upload_enable(i1480);
+        if (result < 0)
+                goto out_hdrs_release;
+        result = mac_fw_hdrs_push(i1480, fw_hdrs, fw_name, fw_tag);
+        mac_fw_upload_disable(i1480);
+out_hdrs_release:
+        if (result >= 0)
+                dev_info(i1480->dev, "%s fw '%s': uploaded\n", fw_tag, fw_name);
+        else
+                dev_err(i1480->dev, "%s fw '%s': failed to upload (%d), "
+                        "power cycle device\n", fw_tag, fw_name, result);
+        fw_hdrs_free(fw_hdrs);
+out_release:
+        release_firmware(fw);
+out:
+        d_fnend(3, i1480->dev, "(%p, %s, %s) = %d\n", i1480, fw_name, fw_tag,
+                result);
+        return result;
+}
+
+
+/**
+ * Upload a pre-PHY firmware
+ *
+ */
+int i1480_pre_fw_upload(struct i1480 *i1480)
+{
+        int result;
+        result = __mac_fw_upload(i1480, i1480->pre_fw_name, "PRE");
+        if (result == 0)
+                msleep(400);
+        return result;
+}
+
+
+/**
+ * Reset a the MAC and PHY
+ *
+ * @i1480:     Device's instance
+ * @returns: 0 if ok, < 0 errno code on error
+ *
+ * We put the command on kmalloc'ed memory as some arches cannot do
+ * USB from the stack. The reply event is copied from an stage buffer,
+ * so it can be in the stack. See WUSB1.0[8.6.2.4] for more details.
+ *
+ * We issue the reset to make sure the UWB controller reinits the PHY;
+ * this way we can now if the PHY init went ok.
+ */
+static
+int i1480_cmd_reset(struct i1480 *i1480)
+{
+        int result;
+        struct uwb_rccb *cmd = (void *) i1480->cmd_buf;
+        struct i1480_evt_reset {
+                struct uwb_rceb rceb;
+                u8 bResultCode;
+        } __attribute__((packed)) *reply = (void *) i1480->evt_buf;
+
+        result = -ENOMEM;
+        cmd->bCommandType = UWB_RC_CET_GENERAL;
+        cmd->wCommand = cpu_to_le16(UWB_RC_CMD_RESET);
+        reply->rceb.bEventType = UWB_RC_CET_GENERAL;
+        reply->rceb.wEvent = UWB_RC_CMD_RESET;
+        result = i1480_cmd(i1480, "RESET", sizeof(*cmd), sizeof(*reply));
+        if (result < 0)
+                goto out;
+        if (reply->bResultCode != UWB_RC_RES_SUCCESS) {
+                dev_err(i1480->dev, "RESET: command execution failed: %u\n",
+                        reply->bResultCode);
+                result = -EIO;
+        }
+out:
+        return result;
+
+}
+
+
+/* Wait for the MAC FW to start running */
+static
+int i1480_fw_is_running_q(struct i1480 *i1480)
+{
+        int cnt = 0;
+        int result;
+        u32 *val = (u32 *) i1480->cmd_buf;
+
+        d_fnstart(3, i1480->dev, "(i1480 %p)\n", i1480);
+        for (cnt = 0; cnt < 10; cnt++) {
+                msleep(100);
+                result = i1480->read(i1480, 0x80080000, 4);
+                if (result < 0) {
+                        dev_err(i1480->dev, "Can't read 0x8008000: %d\n", result);
+                        goto out;
+                }
+                if (*val == 0x55555555UL)       /* fw running? cool */
+                        goto out;
+        }
+        dev_err(i1480->dev, "Timed out waiting for fw to start\n");
+        result = -ETIMEDOUT;
+out:
+        d_fnend(3, i1480->dev, "(i1480 %p) = %d\n", i1480, result);
+        return result;
+
+}
+
+
+/**
+ * Upload MAC firmware, wait for it to start
+ *
+ * @i1480:     Device instance
+ * @fw_name: Name of the file that contains the firmware
+ *
+ * This has to be called after the pre fw has been uploaded (if
+ * there is any).
+ */
+int i1480_mac_fw_upload(struct i1480 *i1480)
+{
+        int result = 0, deprecated_name = 0;
+        struct i1480_rceb *rcebe = (void *) i1480->evt_buf;
+
+        d_fnstart(3, i1480->dev, "(%p)\n", i1480);
+        result = __mac_fw_upload(i1480, i1480->mac_fw_name, "MAC");
+        if (result == -ENOENT) {
+                result = __mac_fw_upload(i1480, i1480->mac_fw_name_deprecate,
+                                         "MAC");
+                deprecated_name = 1;
+        }
+        if (result < 0)
+                return result;
+        if (deprecated_name == 1)
+                dev_warn(i1480->dev,
+                         "WARNING: firmware file name %s is deprecated, "
+                         "please rename to %s\n",
+                         i1480->mac_fw_name_deprecate, i1480->mac_fw_name);
+        result = i1480_fw_is_running_q(i1480);
+        if (result < 0)
+                goto error_fw_not_running;
+        result = i1480->rc_setup ? i1480->rc_setup(i1480) : 0;
+        if (result < 0) {
+                dev_err(i1480->dev, "Cannot setup after MAC fw upload: %d\n",
+                        result);
+                goto error_setup;
+        }
+        result = i1480->wait_init_done(i1480);  /* wait init'on */
+        if (result < 0) {
+                dev_err(i1480->dev, "MAC fw '%s': Initialization timed out "
+                        "(%d)\n", i1480->mac_fw_name, result);
+                goto error_init_timeout;
+        }
+        /* verify we got the right initialization done event */
+        if (i1480->evt_result != sizeof(*rcebe)) {
+                dev_err(i1480->dev, "MAC fw '%s': initialization event returns "
+                        "wrong size (%zu bytes vs %zu needed)\n",
+                        i1480->mac_fw_name, i1480->evt_result, sizeof(*rcebe));
+                dump_bytes(i1480->dev, rcebe, min(i1480->evt_result, (ssize_t)32));
+                goto error_size;
+        }
+        result = -EIO;
+        if (i1480_rceb_check(i1480, &rcebe->rceb, NULL, 0, i1480_CET_VS1,
+                             i1480_EVT_RM_INIT_DONE) < 0) {
+                dev_err(i1480->dev, "wrong initialization event 0x%02x/%04x/%02x "
+                        "received; expected 0x%02x/%04x/00\n",
+                        rcebe->rceb.bEventType, le16_to_cpu(rcebe->rceb.wEvent),
+                        rcebe->rceb.bEventContext, i1480_CET_VS1,
+                        i1480_EVT_RM_INIT_DONE);
+                goto error_init_timeout;
+        }
+        result = i1480_cmd_reset(i1480);
+        if (result < 0)
+                dev_err(i1480->dev, "MAC fw '%s': MBOA reset failed (%d)\n",
+                        i1480->mac_fw_name, result);
+error_fw_not_running:
+error_init_timeout:
+error_size:
+error_setup:
+        d_fnend(3, i1480->dev, "(i1480 %p) = %d\n", i1480, result);
+        return result;
+}
diff --git a/drivers/uwb/i1480/dfu/phy.c b/drivers/uwb/i1480/dfu/phy.c
new file mode 100644
index 000000000000..3b1a87de8e63
--- /dev/null
+++ b/drivers/uwb/i1480/dfu/phy.c
@@ -0,0 +1,203 @@
+/*
+ * Intel Wireless UWB Link 1480
+ * PHY parameters upload
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * Code for uploading the PHY parameters to the PHY through the UWB
+ * Radio Control interface.
+ *
+ * We just send the data through the MPI interface using HWA-like
+ * commands and then reset the PHY to make sure it is ok.
+ */
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/firmware.h>
+#include <linux/usb/wusb.h>
+#include "i1480-dfu.h"
+
+
+/**
+ * Write a value array to an address of the MPI interface
+ *
+ * @i1480:      Device descriptor
+ * @data:       Data array to write
+ * @size:       Size of the data array
+ * @returns:    0 if ok, < 0 errno code on error.
+ *
+ * The data array is organized into pairs:
+ *
+ * ADDRESS VALUE
+ *
+ * ADDRESS is BE 16 bit unsigned, VALUE 8 bit unsigned. Size thus has
+ * to be a multiple of three.
+ */
+static
+int i1480_mpi_write(struct i1480 *i1480, const void *data, size_t size)
+{
+        int result;
+        struct i1480_cmd_mpi_write *cmd = i1480->cmd_buf;
+        struct i1480_evt_confirm *reply = i1480->evt_buf;
+
+        BUG_ON(size > 480);
+        result = -ENOMEM;
+        cmd->rccb.bCommandType = i1480_CET_VS1;
+        cmd->rccb.wCommand = cpu_to_le16(i1480_CMD_MPI_WRITE);
+        cmd->size = cpu_to_le16(size);
+        memcpy(cmd->data, data, size);
+        reply->rceb.bEventType = i1480_CET_VS1;
+        reply->rceb.wEvent = i1480_CMD_MPI_WRITE;
+        result = i1480_cmd(i1480, "MPI-WRITE", sizeof(*cmd) + size, sizeof(*reply));
+        if (result < 0)
+                goto out;
+        if (reply->bResultCode != UWB_RC_RES_SUCCESS) {
+                dev_err(i1480->dev, "MPI-WRITE: command execution failed: %d\n",
+                        reply->bResultCode);
+                result = -EIO;
+        }
+out:
+        return result;
+}
+
+
+/**
+ * Read a value array to from an address of the MPI interface
+ *
+ * @i1480:      Device descriptor
+ * @data:       where to place the read array
+ * @srcaddr:    Where to read from
+ * @size:       Size of the data read array
+ * @returns:    0 if ok, < 0 errno code on error.
+ *
+ * The command data array is organized into pairs ADDR0 ADDR1..., and
+ * the returned data in ADDR0 VALUE0 ADDR1 VALUE1...
+ *
+ * We generate the command array to be a sequential read and then
+ * rearrange the result.
+ *
+ * We use the i1480->cmd_buf for the command, i1480->evt_buf for the reply.
+ *
+ * As the reply has to fit in 512 bytes (i1480->evt_buffer), the max amount
+ * of values we can read is (512 - sizeof(*reply)) / 3
+ */
+static
+int i1480_mpi_read(struct i1480 *i1480, u8 *data, u16 srcaddr, size_t size)
+{
+        int result;
+        struct i1480_cmd_mpi_read *cmd = i1480->cmd_buf;
+        struct i1480_evt_mpi_read *reply = i1480->evt_buf;
+        unsigned cnt;
+
+        memset(i1480->cmd_buf, 0x69, 512);
+        memset(i1480->evt_buf, 0x69, 512);
+
+        BUG_ON(size > (i1480->buf_size - sizeof(*reply)) / 3);
+        result = -ENOMEM;
+        cmd->rccb.bCommandType = i1480_CET_VS1;
+        cmd->rccb.wCommand = cpu_to_le16(i1480_CMD_MPI_READ);
+        cmd->size = cpu_to_le16(3*size);
+        for (cnt = 0; cnt < size; cnt++) {
+                cmd->data[cnt].page = (srcaddr + cnt) >> 8;
+                cmd->data[cnt].offset = (srcaddr + cnt) & 0xff;
+        }
+        reply->rceb.bEventType = i1480_CET_VS1;
+        reply->rceb.wEvent = i1480_CMD_MPI_READ;
+        result = i1480_cmd(i1480, "MPI-READ", sizeof(*cmd) + 2*size,
+                        sizeof(*reply) + 3*size);
+        if (result < 0)
+                goto out;
+        if (reply->bResultCode != UWB_RC_RES_SUCCESS) {
+                dev_err(i1480->dev, "MPI-READ: command execution failed: %d\n",
+                        reply->bResultCode);
+                result = -EIO;
+        }
+        for (cnt = 0; cnt < size; cnt++) {
+                if (reply->data[cnt].page != (srcaddr + cnt) >> 8)
+                        dev_err(i1480->dev, "MPI-READ: page inconsistency at "
+                                "index %u: expected 0x%02x, got 0x%02x\n", cnt,
+                                (srcaddr + cnt) >> 8, reply->data[cnt].page);
+                if (reply->data[cnt].offset != ((srcaddr + cnt) & 0x00ff))
+                        dev_err(i1480->dev, "MPI-READ: offset inconsistency at "
+                                "index %u: expected 0x%02x, got 0x%02x\n", cnt,
+                                (srcaddr + cnt) & 0x00ff,
+                                reply->data[cnt].offset);
+                data[cnt] = reply->data[cnt].value;
+        }
+        result = 0;
+out:
+        return result;
+}
+
+
+/**
+ * Upload a PHY firmware, wait for it to start
+ *
+ * @i1480:     Device instance
+ * @fw_name: Name of the file that contains the firmware
+ *
+ * We assume the MAC fw is up and running. This means we can use the
+ * MPI interface to write the PHY firmware. Once done, we issue an
+ * MBOA Reset, which will force the MAC to reset and reinitialize the
+ * PHY. If that works, we are ready to go.
+ *
+ * Max packet size for the MPI write is 512, so the max buffer is 480
+ * (which gives us 160 byte triads of MSB, LSB and VAL for the data).
+ */
+int i1480_phy_fw_upload(struct i1480 *i1480)
+{
+        int result;
+        const struct firmware *fw;
+        const char *data_itr, *data_top;
+        const size_t MAX_BLK_SIZE = 480;        /* 160 triads */
+        size_t data_size;
+        u8 phy_stat;
+
+        result = request_firmware(&fw, i1480->phy_fw_name, i1480->dev);
+        if (result < 0)
+                goto out;
+        /* Loop writing data in chunks as big as possible until done. */
+        for (data_itr = fw->data, data_top = data_itr + fw->size;
+             data_itr < data_top; data_itr += MAX_BLK_SIZE) {
+                data_size = min(MAX_BLK_SIZE, (size_t) (data_top - data_itr));
+                result = i1480_mpi_write(i1480, data_itr, data_size);
+                if (result < 0)
+                        goto error_mpi_write;
+        }
+        /* Read MPI page 0, offset 6; if 0, PHY was initialized correctly. */
+        result = i1480_mpi_read(i1480, &phy_stat, 0x0006, 1);
+        if (result < 0) {
+                dev_err(i1480->dev, "PHY: can't get status: %d\n", result);
+                goto error_mpi_status;
+        }
+        if (phy_stat != 0) {
+                result = -ENODEV;
+                dev_info(i1480->dev, "error, PHY not ready: %u\n", phy_stat);
+                goto error_phy_status;
+        }
+        dev_info(i1480->dev, "PHY fw '%s': uploaded\n", i1480->phy_fw_name);
+error_phy_status:
+error_mpi_status:
+error_mpi_write:
+        release_firmware(fw);
+        if (result < 0)
+                dev_err(i1480->dev, "PHY fw '%s': failed to upload (%d), "
+                        "power cycle device\n", i1480->phy_fw_name, result);
+out:
+        return result;
+}
diff --git a/drivers/uwb/i1480/dfu/usb.c b/drivers/uwb/i1480/dfu/usb.c
new file mode 100644
index 000000000000..98eeeff051aa
--- /dev/null
+++ b/drivers/uwb/i1480/dfu/usb.c
@@ -0,0 +1,500 @@
+/*
+ * Intel Wireless UWB Link 1480
+ * USB SKU firmware upload implementation
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * This driver will prepare the i1480 device to behave as a real
+ * Wireless USB HWA adaptor by uploading the firmware.
+ *
+ * When the device is connected or driver is loaded, i1480_usb_probe()
+ * is called--this will allocate and initialize the device structure,
+ * fill in the pointers to the common functions (read, write,
+ * wait_init_done and cmd for HWA command execution) and once that is
+ * done, call the common firmware uploading routine. Then clean up and
+ * return -ENODEV, as we don't attach to the device.
+ *
+ * The rest are the basic ops we implement that the fw upload code
+ * uses to do its job. All the ops in the common code are i1480->NAME,
+ * the functions are i1480_usb_NAME().
+ */
+#include <linux/module.h>
+#include <linux/version.h>
+#include <linux/usb.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/uwb.h>
+#include <linux/usb/wusb.h>
+#include <linux/usb/wusb-wa.h>
+#include "i1480-dfu.h"
+
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+
+struct i1480_usb {
+        struct i1480 i1480;
+        struct usb_device *usb_dev;
+        struct usb_interface *usb_iface;
+        struct urb *neep_urb;   /* URB for reading from EP1 */
+};
+
+
+static
+void i1480_usb_init(struct i1480_usb *i1480_usb)
+{
+        i1480_init(&i1480_usb->i1480);
+}
+
+
+static
+int i1480_usb_create(struct i1480_usb *i1480_usb, struct usb_interface *iface)
+{
+        struct usb_device *usb_dev = interface_to_usbdev(iface);
+        int result = -ENOMEM;
+
+        i1480_usb->usb_dev = usb_get_dev(usb_dev);      /* bind the USB device */
+        i1480_usb->usb_iface = usb_get_intf(iface);
+        usb_set_intfdata(iface, i1480_usb);             /* Bind the driver to iface0 */
+        i1480_usb->neep_urb = usb_alloc_urb(0, GFP_KERNEL);
+        if (i1480_usb->neep_urb == NULL)
+                goto error;
+        return 0;
+
+error:
+        usb_set_intfdata(iface, NULL);
+        usb_put_intf(iface);
+        usb_put_dev(usb_dev);
+        return result;
+}
+
+
+static
+void i1480_usb_destroy(struct i1480_usb *i1480_usb)
+{
+        usb_kill_urb(i1480_usb->neep_urb);
+        usb_free_urb(i1480_usb->neep_urb);
+        usb_set_intfdata(i1480_usb->usb_iface, NULL);
+        usb_put_intf(i1480_usb->usb_iface);
+        usb_put_dev(i1480_usb->usb_dev);
+}
+
+
+/**
+ * Write a buffer to a memory address in the i1480 device
+ *
+ * @i1480:  i1480 instance
+ * @memory_address:
+ *          Address where to write the data buffer to.
+ * @buffer: Buffer to the data
+ * @size:   Size of the buffer [has to be < 512].
+ * @returns: 0 if ok, < 0 errno code on error.
+ *
+ * Data buffers to USB cannot be on the stack or in vmalloc'ed areas,
+ * so we copy it to the local i1480 buffer before proceeding. In any
+ * case, we have a max size we can send, soooo.
+ */
+static
+int i1480_usb_write(struct i1480 *i1480, u32 memory_address,
+                    const void *buffer, size_t size)
+{
+        int result = 0;
+        struct i1480_usb *i1480_usb = container_of(i1480, struct i1480_usb, i1480);
+        size_t buffer_size, itr = 0;
+
+        d_fnstart(3, i1480->dev, "(%p, 0x%08x, %p, %zu)\n",
+                  i1480, memory_address, buffer, size);
+        BUG_ON(size & 0x3); /* Needs to be a multiple of 4 */
+        while (size > 0) {
+                buffer_size = size < i1480->buf_size ? size : i1480->buf_size;
+                memcpy(i1480->cmd_buf, buffer + itr, buffer_size);
+                result = usb_control_msg(
+                        i1480_usb->usb_dev, usb_sndctrlpipe(i1480_usb->usb_dev, 0),
+                        0xf0, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+                        cpu_to_le16(memory_address & 0xffff),
+                        cpu_to_le16((memory_address >> 16) & 0xffff),
+                        i1480->cmd_buf, buffer_size, 100 /* FIXME: arbitrary */);
+                if (result < 0)
+                        break;
+                d_printf(3, i1480->dev,
+                         "wrote @ 0x%08x %u bytes (of %zu bytes requested)\n",
+                         memory_address, result, buffer_size);
+                d_dump(4, i1480->dev, i1480->cmd_buf, result);
+                itr += result;
+                memory_address += result;
+                size -= result;
+        }
+        d_fnend(3, i1480->dev, "(%p, 0x%08x, %p, %zu) = %d\n",
+                i1480, memory_address, buffer, size, result);
+        return result;
+}
+
+
+/**
+ * Read a block [max size 512] of the device's memory to @i1480's buffer.
+ *
+ * @i1480: i1480 instance
+ * @memory_address:
+ *         Address where to read from.
+ * @size:  Size to read. Smaller than or equal to 512.
+ * @returns: >= 0 number of bytes written if ok, < 0 errno code on error.
+ *
+ * NOTE: if the memory address or block is incorrect, you might get a
+ *       stall or a different memory read. Caller has to verify the
+ *       memory address and size passed back in the @neh structure.
+ */
+static
+int i1480_usb_read(struct i1480 *i1480, u32 addr, size_t size)
+{
+        ssize_t result = 0, bytes = 0;
+        size_t itr, read_size = i1480->buf_size;
+        struct i1480_usb *i1480_usb = container_of(i1480, struct i1480_usb, i1480);
+
+        d_fnstart(3, i1480->dev, "(%p, 0x%08x, %zu)\n",
+                  i1480, addr, size);
+        BUG_ON(size > i1480->buf_size);
+        BUG_ON(size & 0x3); /* Needs to be a multiple of 4 */
+        BUG_ON(read_size > 512);
+
+        if (addr >= 0x8000d200 && addr < 0x8000d400)    /* Yeah, HW quirk */
+                read_size = 4;
+
+        for (itr = 0; itr < size; itr += read_size) {
+                size_t itr_addr = addr + itr;
+                size_t itr_size = min(read_size, size - itr);
+                result = usb_control_msg(
+                        i1480_usb->usb_dev, usb_rcvctrlpipe(i1480_usb->usb_dev, 0),
+                        0xf0, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+                        cpu_to_le16(itr_addr & 0xffff),
+                        cpu_to_le16((itr_addr >> 16) & 0xffff),
+                        i1480->cmd_buf + itr, itr_size,
+                        100 /* FIXME: arbitrary */);
+                if (result < 0) {
+                        dev_err(i1480->dev, "%s: USB read error: %zd\n",
+                                __func__, result);
+                        goto out;
+                }
+                if (result != itr_size) {
+                        result = -EIO;
+                        dev_err(i1480->dev,
+                                "%s: partial read got only %zu bytes vs %zu expected\n",
+                                __func__, result, itr_size);
+                        goto out;
+                }
+                bytes += result;
+        }
+        result = bytes;
+out:
+        d_fnend(3, i1480->dev, "(%p, 0x%08x, %zu) = %zd\n",
+                i1480, addr, size, result);
+        if (result > 0)
+                d_dump(4, i1480->dev, i1480->cmd_buf, result);
+        return result;
+}
+
+
+/**
+ * Callback for reads on the notification/event endpoint
+ *
+ * Just enables the completion read handler.
+ */
+static
+void i1480_usb_neep_cb(struct urb *urb)
+{
+        struct i1480 *i1480 = urb->context;
+        struct device *dev = i1480->dev;
+
+        switch (urb->status) {
+        case 0:
+                break;
+        case -ECONNRESET:       /* Not an error, but a controlled situation; */
+        case -ENOENT:           /* (we killed the URB)...so, no broadcast */
+                dev_dbg(dev, "NEEP: reset/noent %d\n", urb->status);
+                break;
+        case -ESHUTDOWN:        /* going away! */
+                dev_dbg(dev, "NEEP: down %d\n", urb->status);
+                break;
+        default:
+                dev_err(dev, "NEEP: unknown status %d\n", urb->status);
+                break;
+        }
+        i1480->evt_result = urb->actual_length;
+        complete(&i1480->evt_complete);
+        return;
+}
+
+
+/**
+ * Wait for the MAC FW to initialize
+ *
+ * MAC FW sends a 0xfd/0101/00 notification to EP1 when done
+ * initializing. Get that notification into i1480->evt_buf; upper layer
+ * will verify it.
+ *
+ * Set i1480->evt_result with the result of getting the event or its
+ * size (if succesful).
+ *
+ * Delivers the data directly to i1480->evt_buf
+ */
+static
+int i1480_usb_wait_init_done(struct i1480 *i1480)
+{
+        int result;
+        struct device *dev = i1480->dev;
+        struct i1480_usb *i1480_usb = container_of(i1480, struct i1480_usb, i1480);
+        struct usb_endpoint_descriptor *epd;
+
+        d_fnstart(3, dev, "(%p)\n", i1480);
+        init_completion(&i1480->evt_complete);
+        i1480->evt_result = -EINPROGRESS;
+        epd = &i1480_usb->usb_iface->cur_altsetting->endpoint[0].desc;
+        usb_fill_int_urb(i1480_usb->neep_urb, i1480_usb->usb_dev,
+                         usb_rcvintpipe(i1480_usb->usb_dev, epd->bEndpointAddress),
+                         i1480->evt_buf, i1480->buf_size,
+                         i1480_usb_neep_cb, i1480, epd->bInterval);
+        result = usb_submit_urb(i1480_usb->neep_urb, GFP_KERNEL);
+        if (result < 0) {
+                dev_err(dev, "init done: cannot submit NEEP read: %d\n",
+                        result);
+                goto error_submit;
+        }
+        /* Wait for the USB callback to get the data */
+        result = wait_for_completion_interruptible_timeout(
+                &i1480->evt_complete, HZ);
+        if (result <= 0) {
+                result = result == 0 ? -ETIMEDOUT : result;
+                goto error_wait;
+        }
+        usb_kill_urb(i1480_usb->neep_urb);
+        d_fnend(3, dev, "(%p) = 0\n", i1480);
+        return 0;
+
+error_wait:
+        usb_kill_urb(i1480_usb->neep_urb);
+error_submit:
+        i1480->evt_result = result;
+        d_fnend(3, dev, "(%p) = %d\n", i1480, result);
+        return result;
+}
+
+
+/**
+ * Generic function for issuing commands to the i1480
+ *
+ * @i1480:      i1480 instance
+ * @cmd_name:   Name of the command (for error messages)
+ * @cmd:        Pointer to command buffer
+ * @cmd_size:   Size of the command buffer
+ * @reply:      Buffer for the reply event
+ * @reply_size: Expected size back (including RCEB); the reply buffer
+ *              is assumed to be as big as this.
+ * @returns:    >= 0 size of the returned event data if ok,
+ *              < 0 errno code on error.
+ *
+ * Arms the NE handle, issues the command to the device and checks the
+ * basics of the reply event.
+ */
+static
+int i1480_usb_cmd(struct i1480 *i1480, const char *cmd_name, size_t cmd_size)
+{
+        int result;
+        struct device *dev = i1480->dev;
+        struct i1480_usb *i1480_usb = container_of(i1480, struct i1480_usb, i1480);
+        struct usb_endpoint_descriptor *epd;
+        struct uwb_rccb *cmd = i1480->cmd_buf;
+        u8 iface_no;
+
+        d_fnstart(3, dev, "(%p, %s, %zu)\n", i1480, cmd_name, cmd_size);
+        /* Post a read on the notification & event endpoint */
+        iface_no = i1480_usb->usb_iface->cur_altsetting->desc.bInterfaceNumber;
+        epd = &i1480_usb->usb_iface->cur_altsetting->endpoint[0].desc;
+        usb_fill_int_urb(
+                i1480_usb->neep_urb, i1480_usb->usb_dev,
+                usb_rcvintpipe(i1480_usb->usb_dev, epd->bEndpointAddress),
+                i1480->evt_buf, i1480->buf_size,
+                i1480_usb_neep_cb, i1480, epd->bInterval);
+        result = usb_submit_urb(i1480_usb->neep_urb, GFP_KERNEL);
+        if (result < 0) {
+                dev_err(dev, "%s: cannot submit NEEP read: %d\n",
+                        cmd_name, result);
+                        goto error_submit_ep1;
+        }
+        /* Now post the command on EP0 */
+        result = usb_control_msg(
+                i1480_usb->usb_dev, usb_sndctrlpipe(i1480_usb->usb_dev, 0),
+                WA_EXEC_RC_CMD,
+                USB_DIR_OUT | USB_RECIP_INTERFACE | USB_TYPE_CLASS,
+                0, iface_no,
+                cmd, cmd_size,
+                100 /* FIXME: this is totally arbitrary */);
+        if (result < 0) {
+                dev_err(dev, "%s: control request failed: %d\n",
+                        cmd_name, result);
+                goto error_submit_ep0;
+        }
+        d_fnend(3, dev, "(%p, %s, %zu) = %d\n",
+                i1480, cmd_name, cmd_size, result);
+        return result;
+
+error_submit_ep0:
+        usb_kill_urb(i1480_usb->neep_urb);
+error_submit_ep1:
+        d_fnend(3, dev, "(%p, %s, %zu) = %d\n",
+                i1480, cmd_name, cmd_size, result);
+        return result;
+}
+
+
+/*
+ * Probe a i1480 device for uploading firmware.
+ *
+ * We attach only to interface #0, which is the radio control interface.
+ */
+static
+int i1480_usb_probe(struct usb_interface *iface, const struct usb_device_id *id)
+{
+        struct i1480_usb *i1480_usb;
+        struct i1480 *i1480;
+        struct device *dev = &iface->dev;
+        int result;
+
+        result = -ENODEV;
+        if (iface->cur_altsetting->desc.bInterfaceNumber != 0) {
+                dev_dbg(dev, "not attaching to iface %d\n",
+                        iface->cur_altsetting->desc.bInterfaceNumber);
+                goto error;
+        }
+        if (iface->num_altsetting > 1
+            && interface_to_usbdev(iface)->descriptor.idProduct == 0xbabe) {
+                /* Need altsetting #1 [HW QUIRK] or EP1 won't work */
+                result = usb_set_interface(interface_to_usbdev(iface), 0, 1);
+                if (result < 0)
+                        dev_warn(dev,
+                                 "can't set altsetting 1 on iface 0: %d\n",
+                                 result);
+        }
+
+        result = -ENOMEM;
+        i1480_usb = kzalloc(sizeof(*i1480_usb), GFP_KERNEL);
+        if (i1480_usb == NULL) {
+                dev_err(dev, "Unable to allocate instance\n");
+                goto error;
+        }
+        i1480_usb_init(i1480_usb);
+
+        i1480 = &i1480_usb->i1480;
+        i1480->buf_size = 512;
+        i1480->cmd_buf = kmalloc(2 * i1480->buf_size, GFP_KERNEL);
+        if (i1480->cmd_buf == NULL) {
+                dev_err(dev, "Cannot allocate transfer buffers\n");
+                result = -ENOMEM;
+                goto error_buf_alloc;
+        }
+        i1480->evt_buf = i1480->cmd_buf + i1480->buf_size;
+
+        result = i1480_usb_create(i1480_usb, iface);
+        if (result < 0) {
+                dev_err(dev, "Cannot create instance: %d\n", result);
+                goto error_create;
+        }
+
+        /* setup the fops and upload the firmare */
+        i1480->pre_fw_name = "i1480-pre-phy-0.0.bin";
+        i1480->mac_fw_name = "i1480-usb-0.0.bin";
+        i1480->mac_fw_name_deprecate = "ptc-0.0.bin";
+        i1480->phy_fw_name = "i1480-phy-0.0.bin";
+        i1480->dev = &iface->dev;
+        i1480->write = i1480_usb_write;
+        i1480->read = i1480_usb_read;
+        i1480->rc_setup = NULL;
+        i1480->wait_init_done = i1480_usb_wait_init_done;
+        i1480->cmd = i1480_usb_cmd;
+
+        result = i1480_fw_upload(&i1480_usb->i1480);    /* the real thing */
+        if (result >= 0) {
+                usb_reset_device(i1480_usb->usb_dev);
+                result = -ENODEV;       /* we don't want to bind to the iface */
+        }
+        i1480_usb_destroy(i1480_usb);
+error_create:
+        kfree(i1480->cmd_buf);
+error_buf_alloc:
+        kfree(i1480_usb);
+error:
+        return result;
+}
+
+#define i1480_USB_DEV(v, p)                             \
+{                                                       \
+        .match_flags = USB_DEVICE_ID_MATCH_DEVICE       \
+                 | USB_DEVICE_ID_MATCH_DEV_INFO         \
+                 | USB_DEVICE_ID_MATCH_INT_INFO,        \
+        .idVendor = (v),                                \
+        .idProduct = (p),                               \
+        .bDeviceClass = 0xff,                           \
+        .bDeviceSubClass = 0xff,                        \
+        .bDeviceProtocol = 0xff,                        \
+        .bInterfaceClass = 0xff,                        \
+        .bInterfaceSubClass = 0xff,                     \
+        .bInterfaceProtocol = 0xff,                     \
+}
+
+
+/** USB device ID's that we handle */
+static struct usb_device_id i1480_usb_id_table[] = {
+        i1480_USB_DEV(0x8086, 0xdf3b),
+        i1480_USB_DEV(0x15a9, 0x0005),
+        i1480_USB_DEV(0x07d1, 0x3802),
+        i1480_USB_DEV(0x050d, 0x305a),
+        i1480_USB_DEV(0x3495, 0x3007),
+        {},
+};
+MODULE_DEVICE_TABLE(usb, i1480_usb_id_table);
+
+
+static struct usb_driver i1480_dfu_driver = {
+        .name =         "i1480-dfu-usb",
+        .id_table =     i1480_usb_id_table,
+        .probe =        i1480_usb_probe,
+        .disconnect =   NULL,
+};
+
+
+/*
+ * Initialize the i1480 DFU driver.
+ *
+ * We also need to register our function for guessing event sizes.
+ */
+static int __init i1480_dfu_driver_init(void)
+{
+        return usb_register(&i1480_dfu_driver);
+}
+module_init(i1480_dfu_driver_init);
+
+
+static void __exit i1480_dfu_driver_exit(void)
+{
+        usb_deregister(&i1480_dfu_driver);
+}
+module_exit(i1480_dfu_driver_exit);
+
+
+MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
+MODULE_DESCRIPTION("Intel Wireless UWB Link 1480 firmware uploader for USB");
+MODULE_LICENSE("GPL");
diff --git a/drivers/uwb/i1480/i1480-est.c b/drivers/uwb/i1480/i1480-est.c
new file mode 100644
index 000000000000..7bf8c6febae7
--- /dev/null
+++ b/drivers/uwb/i1480/i1480-est.c
@@ -0,0 +1,99 @@
+/*
+ * Intel Wireless UWB Link 1480
+ * Event Size tables for Wired Adaptors
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/uwb.h>
+#include "dfu/i1480-dfu.h"
+
+
+/** Event size table for wEvents 0x00XX */
+static struct uwb_est_entry i1480_est_fd00[] = {
+        /* Anybody expecting this response has to use
+         * neh->extra_size to specify the real size that will
+         * come back. */
+        [i1480_EVT_CONFIRM] = { .size = sizeof(struct i1480_evt_confirm) },
+        [i1480_CMD_SET_IP_MAS] = { .size = sizeof(struct i1480_evt_confirm) },
+#ifdef i1480_RCEB_EXTENDED
+        [0x09] = {
+                .size = sizeof(struct i1480_rceb),
+                .offset = 1 + offsetof(struct i1480_rceb, wParamLength),
+        },
+#endif
+};
+
+/** Event size table for wEvents 0x01XX */
+static struct uwb_est_entry i1480_est_fd01[] = {
+        [0xff & i1480_EVT_RM_INIT_DONE] = { .size = sizeof(struct i1480_rceb) },
+        [0xff & i1480_EVT_DEV_ADD] = { .size = sizeof(struct i1480_rceb) + 9 },
+        [0xff & i1480_EVT_DEV_RM] = { .size = sizeof(struct i1480_rceb) + 9 },
+        [0xff & i1480_EVT_DEV_ID_CHANGE] = {
+                .size = sizeof(struct i1480_rceb) + 2 },
+};
+
+static int i1480_est_init(void)
+{
+        int result = uwb_est_register(i1480_CET_VS1, 0x00, 0x8086, 0x0c3b,
+                                      i1480_est_fd00,
+                                      ARRAY_SIZE(i1480_est_fd00));
+        if (result < 0) {
+                printk(KERN_ERR "Can't register EST table fd00: %d\n", result);
+                return result;
+        }
+        result = uwb_est_register(i1480_CET_VS1, 0x01, 0x8086, 0x0c3b,
+                                  i1480_est_fd01, ARRAY_SIZE(i1480_est_fd01));
+        if (result < 0) {
+                printk(KERN_ERR "Can't register EST table fd01: %d\n", result);
+                return result;
+        }
+        return 0;
+}
+module_init(i1480_est_init);
+
+static void i1480_est_exit(void)
+{
+        uwb_est_unregister(i1480_CET_VS1, 0x00, 0x8086, 0x0c3b,
+                           i1480_est_fd00, ARRAY_SIZE(i1480_est_fd00));
+        uwb_est_unregister(i1480_CET_VS1, 0x01, 0x8086, 0x0c3b,
+                           i1480_est_fd01, ARRAY_SIZE(i1480_est_fd01));
+}
+module_exit(i1480_est_exit);
+
+MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
+MODULE_DESCRIPTION("i1480's Vendor Specific Event Size Tables");
+MODULE_LICENSE("GPL");
+
+/**
+ * USB device ID's that we handle
+ *
+ * [so we are loaded when this kind device is connected]
+ */
+static struct usb_device_id i1480_est_id_table[] = {
+        { USB_DEVICE(0x8086, 0xdf3b), },
+        { USB_DEVICE(0x8086, 0x0c3b), },
+        { },
+};
+MODULE_DEVICE_TABLE(usb, i1480_est_id_table);
diff --git a/drivers/uwb/i1480/i1480-wlp.h b/drivers/uwb/i1480/i1480-wlp.h
new file mode 100644
index 000000000000..18a8b0e4567b
--- /dev/null
+++ b/drivers/uwb/i1480/i1480-wlp.h
@@ -0,0 +1,200 @@
+/*
+ * Intel 1480 Wireless UWB Link
+ * WLP specific definitions
+ *
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ */
+
+#ifndef __i1480_wlp_h__
+#define __i1480_wlp_h__
+
+#include <linux/spinlock.h>
+#include <linux/list.h>
+#include <linux/uwb.h>
+#include <linux/if_ether.h>
+#include <asm/byteorder.h>
+
+/* New simplified header format? */
+#undef WLP_HDR_FMT_2            /* FIXME: rename */
+
+/**
+ * Values of the Delivery ID & Type field when PCA or DRP
+ *
+ * The Delivery ID & Type field in the WLP TX header indicates whether
+ * the frame is PCA or DRP. This is done based on the high level bit of
+ * this field.
+ * We use this constant to test if the traffic is PCA or DRP as follows:
+ * if (wlp_tx_hdr_delivery_id_type(wlp_tx_hdr) & WLP_DRP)
+ *      this is DRP traffic
+ * else
+ *      this is PCA traffic
+ */
+enum deliver_id_type_bit {
+        WLP_DRP = 8,
+};
+
+/**
+ * WLP TX header
+ *
+ * Indicates UWB/WLP-specific transmission parameters for a network
+ * packet.
+ */
+struct wlp_tx_hdr {
+        /* dword 0 */
+        struct uwb_dev_addr dstaddr;
+        u8                  key_index;
+        u8                  mac_params;
+        /* dword 1 */
+        u8                  phy_params;
+#ifndef WLP_HDR_FMT_2
+        u8                  reserved;
+        __le16              oui01;              /* FIXME: not so sure if __le16 or u8[2] */
+        /* dword 2 */
+        u8                  oui2;               /*        if all LE, it could be merged */
+        __le16              prid;
+#endif
+} __attribute__((packed));
+
+static inline int wlp_tx_hdr_delivery_id_type(const struct wlp_tx_hdr *hdr)
+{
+        return hdr->mac_params & 0x0f;
+}
+
+static inline int wlp_tx_hdr_ack_policy(const struct wlp_tx_hdr *hdr)
+{
+        return (hdr->mac_params >> 4) & 0x07;
+}
+
+static inline int wlp_tx_hdr_rts_cts(const struct wlp_tx_hdr *hdr)
+{
+        return (hdr->mac_params >> 7) & 0x01;
+}
+
+static inline void wlp_tx_hdr_set_delivery_id_type(struct wlp_tx_hdr *hdr, int id)
+{
+        hdr->mac_params = (hdr->mac_params & ~0x0f) | id;
+}
+
+static inline void wlp_tx_hdr_set_ack_policy(struct wlp_tx_hdr *hdr,
+                                             enum uwb_ack_pol policy)
+{
+        hdr->mac_params = (hdr->mac_params & ~0x70) | (policy << 4);
+}
+
+static inline void wlp_tx_hdr_set_rts_cts(struct wlp_tx_hdr *hdr, int rts_cts)
+{
+        hdr->mac_params = (hdr->mac_params & ~0x80) | (rts_cts << 7);
+}
+
+static inline enum uwb_phy_rate wlp_tx_hdr_phy_rate(const struct wlp_tx_hdr *hdr)
+{
+        return hdr->phy_params & 0x0f;
+}
+
+static inline int wlp_tx_hdr_tx_power(const struct wlp_tx_hdr *hdr)
+{
+        return (hdr->phy_params >> 4) & 0x0f;
+}
+
+static inline void wlp_tx_hdr_set_phy_rate(struct wlp_tx_hdr *hdr, enum uwb_phy_rate rate)
+{
+        hdr->phy_params = (hdr->phy_params & ~0x0f) | rate;
+}
+
+static inline void wlp_tx_hdr_set_tx_power(struct wlp_tx_hdr *hdr, int pwr)
+{
+        hdr->phy_params = (hdr->phy_params & ~0xf0) | (pwr << 4);
+}
+
+
+/**
+ * WLP RX header
+ *
+ * Provides UWB/WLP-specific transmission data for a received
+ * network packet.
+ */
+struct wlp_rx_hdr {
+        /* dword 0 */
+        struct uwb_dev_addr dstaddr;
+        struct uwb_dev_addr srcaddr;
+        /* dword 1 */
+        u8                  LQI;
+        s8                  RSSI;
+        u8                  reserved3;
+#ifndef WLP_HDR_FMT_2
+        u8                  oui0;
+        /* dword 2 */
+        __le16              oui12;
+        __le16              prid;
+#endif
+} __attribute__((packed));
+
+
+/** User configurable options for WLP */
+struct wlp_options {
+        struct mutex mutex; /* access to user configurable options*/
+        struct wlp_tx_hdr def_tx_hdr;   /* default tx hdr */
+        u8 pca_base_priority;
+        u8 bw_alloc; /*index into bw_allocs[] for PCA/DRP reservations*/
+};
+
+
+static inline
+void wlp_options_init(struct wlp_options *options)
+{
+        mutex_init(&options->mutex);
+        wlp_tx_hdr_set_ack_policy(&options->def_tx_hdr, UWB_ACK_INM);
+        wlp_tx_hdr_set_rts_cts(&options->def_tx_hdr, 1);
+        /* FIXME: default to phy caps */
+        wlp_tx_hdr_set_phy_rate(&options->def_tx_hdr, UWB_PHY_RATE_480);
+#ifndef WLP_HDR_FMT_2
+        options->def_tx_hdr.prid = cpu_to_le16(0x0000);
+#endif
+}
+
+
+/* sysfs helpers */
+
+extern ssize_t uwb_pca_base_priority_store(struct wlp_options *,
+                                           const char *, size_t);
+extern ssize_t uwb_pca_base_priority_show(const struct wlp_options *, char *);
+extern ssize_t uwb_bw_alloc_store(struct wlp_options *, const char *, size_t);
+extern ssize_t uwb_bw_alloc_show(const struct wlp_options *, char *);
+extern ssize_t uwb_ack_policy_store(struct wlp_options *,
+                                    const char *, size_t);
+extern ssize_t uwb_ack_policy_show(const struct wlp_options *, char *);
+extern ssize_t uwb_rts_cts_store(struct wlp_options *, const char *, size_t);
+extern ssize_t uwb_rts_cts_show(const struct wlp_options *, char *);
+extern ssize_t uwb_phy_rate_store(struct wlp_options *, const char *, size_t);
+extern ssize_t uwb_phy_rate_show(const struct wlp_options *, char *);
+
+
+/** Simple bandwidth allocation (temporary and too simple) */
+struct wlp_bw_allocs {
+        const char *name;
+        struct {
+                u8 mask, stream;
+        } tx, rx;
+};
+
+
+#endif /* #ifndef __i1480_wlp_h__ */
diff --git a/drivers/uwb/i1480/i1480u-wlp/Makefile b/drivers/uwb/i1480/i1480u-wlp/Makefile
new file mode 100644
index 000000000000..fe6709b8e68b
--- /dev/null
+++ b/drivers/uwb/i1480/i1480u-wlp/Makefile
@@ -0,0 +1,8 @@
+obj-$(CONFIG_UWB_I1480U_WLP) += i1480u-wlp.o
+
+i1480u-wlp-objs :=      \
+        lc.o            \
+        netdev.o        \
+        rx.o            \
+        sysfs.o         \
+        tx.o
diff --git a/drivers/uwb/i1480/i1480u-wlp/i1480u-wlp.h b/drivers/uwb/i1480/i1480u-wlp/i1480u-wlp.h
new file mode 100644
index 000000000000..5f1b2951bb83
--- /dev/null
+++ b/drivers/uwb/i1480/i1480u-wlp/i1480u-wlp.h
@@ -0,0 +1,284 @@
+/*
+ * Intel 1480 Wireless UWB Link USB
+ * Header formats, constants, general internal interfaces
+ *
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * This is not an standard interface.
+ *
+ * FIXME: docs
+ *
+ * i1480u-wlp is pretty simple: two endpoints, one for tx, one for
+ * rx. rx is polled. Network packets (ethernet, whatever) are wrapped
+ * in i1480 TX or RX headers (for sending over the air), and these
+ * packets are wrapped in UNTD headers (for sending to the WLP UWB
+ * controller).
+ *
+ * UNTD packets (UNTD hdr + i1480 hdr + network packet) packets
+ * cannot be bigger than i1480u_MAX_FRG_SIZE. When this happens, the
+ * i1480 packet is broken in chunks/packets:
+ *
+ * UNTD-1st.hdr + i1480.hdr + payload
+ * UNTD-next.hdr + payload
+ * ...
+ * UNTD-last.hdr + payload
+ *
+ * so that each packet is smaller or equal than i1480u_MAX_FRG_SIZE.
+ *
+ * All HW structures and bitmaps are little endian, so we need to play
+ * ugly tricks when defining bitfields. Hoping for the day GCC
+ * implements __attribute__((endian(1234))).
+ *
+ * FIXME: ROADMAP to the whole implementation
+ */
+
+#ifndef __i1480u_wlp_h__
+#define __i1480u_wlp_h__
+
+#include <linux/usb.h>
+#include <linux/netdevice.h>
+#include <linux/uwb.h>          /* struct uwb_rc, struct uwb_notifs_handler */
+#include <linux/wlp.h>
+#include "../i1480-wlp.h"
+
+#undef i1480u_FLOW_CONTROL      /* Enable flow control code */
+
+/**
+ * Basic flow control
+ */
+enum {
+        i1480u_TX_INFLIGHT_MAX = 1000,
+        i1480u_TX_INFLIGHT_THRESHOLD = 100,
+};
+
+/** Maximum size of a transaction that we can tx/rx */
+enum {
+        /* Maximum packet size computed as follows: max UNTD header (8) +
+         * i1480 RX header (8) + max Ethernet header and payload (4096) +
+         * Padding added by skb_reserve (2) to make post Ethernet payload
+         * start on 16 byte boundary*/
+        i1480u_MAX_RX_PKT_SIZE = 4114,
+        i1480u_MAX_FRG_SIZE = 512,
+        i1480u_RX_BUFS = 9,
+};
+
+
+/**
+ * UNTD packet type
+ *
+ * We need to fragment any payload whose UNTD packet is going to be
+ * bigger than i1480u_MAX_FRG_SIZE.
+ */
+enum i1480u_pkt_type {
+        i1480u_PKT_FRAG_1ST = 0x1,
+        i1480u_PKT_FRAG_NXT = 0x0,
+        i1480u_PKT_FRAG_LST = 0x2,
+        i1480u_PKT_FRAG_CMP = 0x3
+};
+enum {
+        i1480u_PKT_NONE = 0x4,
+};
+
+/** USB Network Transfer Descriptor - common */
+struct untd_hdr {
+        u8     type;
+        __le16 len;
+} __attribute__((packed));
+
+static inline enum i1480u_pkt_type untd_hdr_type(const struct untd_hdr *hdr)
+{
+        return hdr->type & 0x03;
+}
+
+static inline int untd_hdr_rx_tx(const struct untd_hdr *hdr)
+{
+        return (hdr->type >> 2) & 0x01;
+}
+
+static inline void untd_hdr_set_type(struct untd_hdr *hdr, enum i1480u_pkt_type type)
+{
+        hdr->type = (hdr->type & ~0x03) | type;
+}
+
+static inline void untd_hdr_set_rx_tx(struct untd_hdr *hdr, int rx_tx)
+{
+        hdr->type = (hdr->type & ~0x04) | (rx_tx << 2);
+}
+
+
+/**
+ * USB Network Transfer Descriptor - Complete Packet
+ *
+ * This is for a packet that is smaller (header + payload) than
+ * i1480u_MAX_FRG_SIZE.
+ *
+ * @hdr.total_len is the size of the payload; the payload doesn't
+ * count this header nor the padding, but includes the size of i1480
+ * header.
+ */
+struct untd_hdr_cmp {
+        struct untd_hdr hdr;
+        u8              padding;
+} __attribute__((packed));
+
+
+/**
+ * USB Network Transfer Descriptor - First fragment
+ *
+ * @hdr.len is the size of the *whole packet* (excluding UNTD
+ * headers); @fragment_len is the size of the payload (excluding UNTD
+ * headers, but including i1480 headers).
+ */
+struct untd_hdr_1st {
+        struct untd_hdr hdr;
+        __le16          fragment_len;
+        u8              padding[3];
+} __attribute__((packed));
+
+
+/**
+ * USB Network Transfer Descriptor - Next / Last [Rest]
+ *
+ * @hdr.len is the size of the payload, not including headrs.
+ */
+struct untd_hdr_rst {
+        struct untd_hdr hdr;
+        u8              padding;
+} __attribute__((packed));
+
+
+/**
+ * Transmission context
+ *
+ * Wraps all the stuff needed to track a pending/active tx
+ * operation.
+ */
+struct i1480u_tx {
+        struct list_head list_node;
+        struct i1480u *i1480u;
+        struct urb *urb;
+
+        struct sk_buff *skb;
+        struct wlp_tx_hdr *wlp_tx_hdr;
+
+        void *buf;      /* if NULL, no new buf was used */
+        size_t buf_size;
+};
+
+/**
+ * Basic flow control
+ *
+ * We maintain a basic flow control counter. "count" how many TX URBs are
+ * outstanding. Only allow "max"
+ * TX URBs to be outstanding. If this value is reached the queue will be
+ * stopped. The queue will be restarted when there are
+ * "threshold" URBs outstanding.
+ * Maintain a counter of how many time the TX queue needed to be restarted
+ * due to the "max" being exceeded and the "threshold" reached again. The
+ * timestamp "restart_ts" is to keep track from when the counter was last
+ * queried (see sysfs handling of file wlp_tx_inflight).
+ */
+struct i1480u_tx_inflight {
+        atomic_t count;
+        unsigned long max;
+        unsigned long threshold;
+        unsigned long restart_ts;
+        atomic_t restart_count;
+};
+
+/**
+ * Instance of a i1480u WLP interface
+ *
+ * Keeps references to the USB device that wraps it, as well as it's
+ * interface and associated UWB host controller. As well, it also
+ * keeps a link to the netdevice for integration into the networking
+ * stack.
+ * We maintian separate error history for the tx and rx endpoints because
+ * the implementation does not rely on locking - having one shared
+ * structure between endpoints may cause problems. Adding locking to the
+ * implementation will have higher cost than adding a separate structure.
+ */
+struct i1480u {
+        struct usb_device *usb_dev;
+        struct usb_interface *usb_iface;
+        struct net_device *net_dev;
+
+        spinlock_t lock;
+        struct net_device_stats stats;
+
+        /* RX context handling */
+        struct sk_buff *rx_skb;
+        struct uwb_dev_addr rx_srcaddr;
+        size_t rx_untd_pkt_size;
+        struct i1480u_rx_buf {
+                struct i1480u *i1480u;  /* back pointer */
+                struct urb *urb;
+                struct sk_buff *data;   /* i1480u_MAX_RX_PKT_SIZE each */
+        } rx_buf[i1480u_RX_BUFS];       /* N bufs */
+
+        spinlock_t tx_list_lock;        /* TX context */
+        struct list_head tx_list;
+        u8 tx_stream;
+
+        struct stats lqe_stats, rssi_stats;     /* radio statistics */
+
+        /* Options we can set from sysfs */
+        struct wlp_options options;
+        struct uwb_notifs_handler uwb_notifs_handler;
+        struct edc tx_errors;
+        struct edc rx_errors;
+        struct wlp wlp;
+#ifdef i1480u_FLOW_CONTROL
+        struct urb *notif_urb;
+        struct edc notif_edc;           /* error density counter */
+        u8 notif_buffer[1];
+#endif
+        struct i1480u_tx_inflight tx_inflight;
+};
+
+/* Internal interfaces */
+extern void i1480u_rx_cb(struct urb *urb);
+extern int i1480u_rx_setup(struct i1480u *);
+extern void i1480u_rx_release(struct i1480u *);
+extern void i1480u_tx_release(struct i1480u *);
+extern int i1480u_xmit_frame(struct wlp *, struct sk_buff *,
+                             struct uwb_dev_addr *);
+extern void i1480u_stop_queue(struct wlp *);
+extern void i1480u_start_queue(struct wlp *);
+extern int i1480u_sysfs_setup(struct i1480u *);
+extern void i1480u_sysfs_release(struct i1480u *);
+
+/* netdev interface */
+extern int i1480u_open(struct net_device *);
+extern int i1480u_stop(struct net_device *);
+extern int i1480u_hard_start_xmit(struct sk_buff *, struct net_device *);
+extern void i1480u_tx_timeout(struct net_device *);
+extern int i1480u_set_config(struct net_device *, struct ifmap *);
+extern struct net_device_stats *i1480u_get_stats(struct net_device *);
+extern int i1480u_change_mtu(struct net_device *, int);
+extern void i1480u_uwb_notifs_cb(void *, struct uwb_dev *, enum uwb_notifs);
+
+/* bandwidth allocation callback */
+extern void  i1480u_bw_alloc_cb(struct uwb_rsv *);
+
+/* Sys FS */
+extern struct attribute_group i1480u_wlp_attr_group;
+
+#endif /* #ifndef __i1480u_wlp_h__ */
diff --git a/drivers/uwb/i1480/i1480u-wlp/lc.c b/drivers/uwb/i1480/i1480u-wlp/lc.c
new file mode 100644
index 000000000000..737d60cd5b73
--- /dev/null
+++ b/drivers/uwb/i1480/i1480u-wlp/lc.c
@@ -0,0 +1,421 @@
+/*
+ * WUSB Wire Adapter: WLP interface
+ * Driver for the Linux Network stack.
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ *
+ * This implements a very simple network driver for the WLP USB
+ * device that is associated to a UWB (Ultra Wide Band) host.
+ *
+ * This is seen as an interface of a composite device. Once the UWB
+ * host has an association to another WLP capable device, the
+ * networking interface (aka WLP) can start to send packets back and
+ * forth.
+ *
+ * Limitations:
+ *
+ *  - Hand cranked; can't ifup the interface until there is an association
+ *
+ *  - BW allocation very simplistic [see i1480u_mas_set() and callees].
+ *
+ *
+ * ROADMAP:
+ *
+ *   ENTRY POINTS (driver model):
+ *
+ *     i1480u_driver_{exit,init}(): initialization of the driver.
+ *
+ *     i1480u_probe(): called by the driver code when a device
+ *                     matching 'i1480u_id_table' is connected.
+ *
+ *                     This allocs a netdev instance, inits with
+ *                     i1480u_add(), then registers_netdev().
+ *         i1480u_init()
+ *         i1480u_add()
+ *
+ *     i1480u_disconnect(): device has been disconnected/module
+ *                          is being removed.
+ *         i1480u_rm()
+ */
+#include <linux/version.h>
+#include <linux/if_arp.h>
+#include <linux/etherdevice.h>
+#include <linux/uwb/debug.h>
+#include "i1480u-wlp.h"
+
+
+
+static inline
+void i1480u_init(struct i1480u *i1480u)
+{
+        /* nothing so far... doesn't it suck? */
+        spin_lock_init(&i1480u->lock);
+        INIT_LIST_HEAD(&i1480u->tx_list);
+        spin_lock_init(&i1480u->tx_list_lock);
+        wlp_options_init(&i1480u->options);
+        edc_init(&i1480u->tx_errors);
+        edc_init(&i1480u->rx_errors);
+#ifdef i1480u_FLOW_CONTROL
+        edc_init(&i1480u->notif_edc);
+#endif
+        stats_init(&i1480u->lqe_stats);
+        stats_init(&i1480u->rssi_stats);
+        wlp_init(&i1480u->wlp);
+}
+
+/**
+ * Fill WLP device information structure
+ *
+ * The structure will contain a few character arrays, each ending with a
+ * null terminated string. Each string has to fit (excluding terminating
+ * character) into a specified range obtained from the WLP substack.
+ *
+ * It is still not clear exactly how this device information should be
+ * obtained. Until we find out we use the USB device descriptor as backup, some
+ * information elements have intuitive mappings, other not.
+ */
+static
+void i1480u_fill_device_info(struct wlp *wlp, struct wlp_device_info *dev_info)
+{
+        struct i1480u *i1480u = container_of(wlp, struct i1480u, wlp);
+        struct usb_device *usb_dev = i1480u->usb_dev;
+        /* Treat device name and model name the same */
+        if (usb_dev->descriptor.iProduct) {
+                usb_string(usb_dev, usb_dev->descriptor.iProduct,
+                           dev_info->name, sizeof(dev_info->name));
+                usb_string(usb_dev, usb_dev->descriptor.iProduct,
+                           dev_info->model_name, sizeof(dev_info->model_name));
+        }
+        if (usb_dev->descriptor.iManufacturer)
+                usb_string(usb_dev, usb_dev->descriptor.iManufacturer,
+                           dev_info->manufacturer,
+                           sizeof(dev_info->manufacturer));
+        scnprintf(dev_info->model_nr, sizeof(dev_info->model_nr), "%04x",
+                  __le16_to_cpu(usb_dev->descriptor.bcdDevice));
+        if (usb_dev->descriptor.iSerialNumber)
+                usb_string(usb_dev, usb_dev->descriptor.iSerialNumber,
+                           dev_info->serial, sizeof(dev_info->serial));
+        /* FIXME: where should we obtain category? */
+        dev_info->prim_dev_type.category = cpu_to_le16(WLP_DEV_CAT_OTHER);
+        /* FIXME: Complete OUI and OUIsubdiv attributes */
+}
+
+#ifdef i1480u_FLOW_CONTROL
+/**
+ * Callback for the notification endpoint
+ *
+ * This mostly controls the xon/xoff protocol. In case of hard error,
+ * we stop the queue. If not, we always retry.
+ */
+static
+void i1480u_notif_cb(struct urb *urb, struct pt_regs *regs)
+{
+        struct i1480u *i1480u = urb->context;
+        struct usb_interface *usb_iface = i1480u->usb_iface;
+        struct device *dev = &usb_iface->dev;
+        int result;
+
+        switch (urb->status) {
+        case 0:                         /* Got valid data, do xon/xoff */
+                switch (i1480u->notif_buffer[0]) {
+                case 'N':
+                        dev_err(dev, "XOFF STOPPING queue at %lu\n", jiffies);
+                        netif_stop_queue(i1480u->net_dev);
+                        break;
+                case 'A':
+                        dev_err(dev, "XON STARTING queue at %lu\n", jiffies);
+                        netif_start_queue(i1480u->net_dev);
+                        break;
+                default:
+                        dev_err(dev, "NEP: unknown data 0x%02hhx\n",
+                                i1480u->notif_buffer[0]);
+                }
+                break;
+        case -ECONNRESET:               /* Controlled situation ... */
+        case -ENOENT:                   /* we killed the URB... */
+                dev_err(dev, "NEP: URB reset/noent %d\n", urb->status);
+                goto error;
+        case -ESHUTDOWN:                /* going away! */
+                dev_err(dev, "NEP: URB down %d\n", urb->status);
+                goto error;
+        default:                        /* Retry unless it gets ugly */
+                if (edc_inc(&i1480u->notif_edc, EDC_MAX_ERRORS,
+                            EDC_ERROR_TIMEFRAME)) {
+                        dev_err(dev, "NEP: URB max acceptable errors "
+                                "exceeded; resetting device\n");
+                        goto error_reset;
+                }
+                dev_err(dev, "NEP: URB error %d\n", urb->status);
+                break;
+        }
+        result = usb_submit_urb(urb, GFP_ATOMIC);
+        if (result < 0) {
+                dev_err(dev, "NEP: Can't resubmit URB: %d; resetting device\n",
+                        result);
+                goto error_reset;
+        }
+        return;
+
+error_reset:
+        wlp_reset_all(&i1480-wlp);
+error:
+        netif_stop_queue(i1480u->net_dev);
+        return;
+}
+#endif
+
+static
+int i1480u_add(struct i1480u *i1480u, struct usb_interface *iface)
+{
+        int result = -ENODEV;
+        struct wlp *wlp = &i1480u->wlp;
+        struct usb_device *usb_dev = interface_to_usbdev(iface);
+        struct net_device *net_dev = i1480u->net_dev;
+        struct uwb_rc *rc;
+        struct uwb_dev *uwb_dev;
+#ifdef i1480u_FLOW_CONTROL
+        struct usb_endpoint_descriptor *epd;
+#endif
+
+        i1480u->usb_dev = usb_get_dev(usb_dev);
+        i1480u->usb_iface = iface;
+        rc = uwb_rc_get_by_grandpa(&i1480u->usb_dev->dev);
+        if (rc == NULL) {
+                dev_err(&iface->dev, "Cannot get associated UWB Radio "
+                        "Controller\n");
+                goto out;
+        }
+        wlp->xmit_frame = i1480u_xmit_frame;
+        wlp->fill_device_info = i1480u_fill_device_info;
+        wlp->stop_queue = i1480u_stop_queue;
+        wlp->start_queue = i1480u_start_queue;
+        result = wlp_setup(wlp, rc);
+        if (result < 0) {
+                dev_err(&iface->dev, "Cannot setup WLP\n");
+                goto error_wlp_setup;
+        }
+        result = 0;
+        ether_setup(net_dev);                   /* make it an etherdevice */
+        uwb_dev = &rc->uwb_dev;
+        /* FIXME: hookup address change notifications? */
+
+        memcpy(net_dev->dev_addr, uwb_dev->mac_addr.data,
+               sizeof(net_dev->dev_addr));
+
+        net_dev->hard_header_len = sizeof(struct untd_hdr_cmp)
+                + sizeof(struct wlp_tx_hdr)
+                + WLP_DATA_HLEN
+                + ETH_HLEN;
+        net_dev->mtu = 3500;
+        net_dev->tx_queue_len = 20;             /* FIXME: maybe use 1000? */
+
+/*      net_dev->flags &= ~IFF_BROADCAST;       FIXME: BUG in firmware */
+        /* FIXME: multicast disabled */
+        net_dev->flags &= ~IFF_MULTICAST;
+        net_dev->features &= ~NETIF_F_SG;
+        net_dev->features &= ~NETIF_F_FRAGLIST;
+        /* All NETIF_F_*_CSUM disabled */
+        net_dev->features |= NETIF_F_HIGHDMA;
+        net_dev->watchdog_timeo = 5*HZ;         /* FIXME: a better default? */
+
+        net_dev->open = i1480u_open;
+        net_dev->stop = i1480u_stop;
+        net_dev->hard_start_xmit = i1480u_hard_start_xmit;
+        net_dev->tx_timeout = i1480u_tx_timeout;
+        net_dev->get_stats = i1480u_get_stats;
+        net_dev->set_config = i1480u_set_config;
+        net_dev->change_mtu = i1480u_change_mtu;
+
+#ifdef i1480u_FLOW_CONTROL
+        /* Notification endpoint setup (submitted when we open the device) */
+        i1480u->notif_urb = usb_alloc_urb(0, GFP_KERNEL);
+        if (i1480u->notif_urb == NULL) {
+                dev_err(&iface->dev, "Unable to allocate notification URB\n");
+                result = -ENOMEM;
+                goto error_urb_alloc;
+        }
+        epd = &iface->cur_altsetting->endpoint[0].desc;
+        usb_fill_int_urb(i1480u->notif_urb, usb_dev,
+                         usb_rcvintpipe(usb_dev, epd->bEndpointAddress),
+                         i1480u->notif_buffer, sizeof(i1480u->notif_buffer),
+                         i1480u_notif_cb, i1480u, epd->bInterval);
+
+#endif
+
+        i1480u->tx_inflight.max = i1480u_TX_INFLIGHT_MAX;
+        i1480u->tx_inflight.threshold = i1480u_TX_INFLIGHT_THRESHOLD;
+        i1480u->tx_inflight.restart_ts = jiffies;
+        usb_set_intfdata(iface, i1480u);
+        return result;
+
+#ifdef i1480u_FLOW_CONTROL
+error_urb_alloc:
+#endif
+        wlp_remove(wlp);
+error_wlp_setup:
+        uwb_rc_put(rc);
+out:
+        usb_put_dev(i1480u->usb_dev);
+        return result;
+}
+
+static void i1480u_rm(struct i1480u *i1480u)
+{
+        struct uwb_rc *rc = i1480u->wlp.rc;
+        usb_set_intfdata(i1480u->usb_iface, NULL);
+#ifdef i1480u_FLOW_CONTROL
+        usb_kill_urb(i1480u->notif_urb);
+        usb_free_urb(i1480u->notif_urb);
+#endif
+        wlp_remove(&i1480u->wlp);
+        uwb_rc_put(rc);
+        usb_put_dev(i1480u->usb_dev);
+}
+
+/** Just setup @net_dev's i1480u private data */
+static void i1480u_netdev_setup(struct net_device *net_dev)
+{
+        struct i1480u *i1480u = netdev_priv(net_dev);
+        /* Initialize @i1480u */
+        memset(i1480u, 0, sizeof(*i1480u));
+        i1480u_init(i1480u);
+}
+
+/**
+ * Probe a i1480u interface and register it
+ *
+ * @iface:   USB interface to link to
+ * @id:      USB class/subclass/protocol id
+ * @returns: 0 if ok, < 0 errno code on error.
+ *
+ * Does basic housekeeping stuff and then allocs a netdev with space
+ * for the i1480u  data. Initializes, registers in i1480u, registers in
+ * netdev, ready to go.
+ */
+static int i1480u_probe(struct usb_interface *iface,
+                        const struct usb_device_id *id)
+{
+        int result;
+        struct net_device *net_dev;
+        struct device *dev = &iface->dev;
+        struct i1480u *i1480u;
+
+        /* Allocate instance [calls i1480u_netdev_setup() on it] */
+        result = -ENOMEM;
+        net_dev = alloc_netdev(sizeof(*i1480u), "wlp%d", i1480u_netdev_setup);
+        if (net_dev == NULL) {
+                dev_err(dev, "no memory for network device instance\n");
+                goto error_alloc_netdev;
+        }
+        SET_NETDEV_DEV(net_dev, dev);
+        i1480u = netdev_priv(net_dev);
+        i1480u->net_dev = net_dev;
+        result = i1480u_add(i1480u, iface);     /* Now setup all the wlp stuff */
+        if (result < 0) {
+                dev_err(dev, "cannot add i1480u device: %d\n", result);
+                goto error_i1480u_add;
+        }
+        result = register_netdev(net_dev);      /* Okey dokey, bring it up */
+        if (result < 0) {
+                dev_err(dev, "cannot register network device: %d\n", result);
+                goto error_register_netdev;
+        }
+        i1480u_sysfs_setup(i1480u);
+        if (result < 0)
+                goto error_sysfs_init;
+        return 0;
+
+error_sysfs_init:
+        unregister_netdev(net_dev);
+error_register_netdev:
+        i1480u_rm(i1480u);
+error_i1480u_add:
+        free_netdev(net_dev);
+error_alloc_netdev:
+        return result;
+}
+
+
+/**
+ * Disconect a i1480u from the system.
+ *
+ * i1480u_stop() has been called before, so al the rx and tx contexts
+ * have been taken down already. Make sure the queue is stopped,
+ * unregister netdev and i1480u, free and kill.
+ */
+static void i1480u_disconnect(struct usb_interface *iface)
+{
+        struct i1480u *i1480u;
+        struct net_device *net_dev;
+
+        i1480u = usb_get_intfdata(iface);
+        net_dev = i1480u->net_dev;
+        netif_stop_queue(net_dev);
+#ifdef i1480u_FLOW_CONTROL
+        usb_kill_urb(i1480u->notif_urb);
+#endif
+        i1480u_sysfs_release(i1480u);
+        unregister_netdev(net_dev);
+        i1480u_rm(i1480u);
+        free_netdev(net_dev);
+}
+
+static struct usb_device_id i1480u_id_table[] = {
+        {
+                .match_flags = USB_DEVICE_ID_MATCH_DEVICE \
+                                |  USB_DEVICE_ID_MATCH_DEV_INFO \
+                                |  USB_DEVICE_ID_MATCH_INT_INFO,
+                .idVendor = 0x8086,
+                .idProduct = 0x0c3b,
+                .bDeviceClass = 0xef,
+                .bDeviceSubClass = 0x02,
+                .bDeviceProtocol = 0x02,
+                .bInterfaceClass = 0xff,
+                .bInterfaceSubClass = 0xff,
+                .bInterfaceProtocol = 0xff,
+        },
+        {},
+};
+MODULE_DEVICE_TABLE(usb, i1480u_id_table);
+
+static struct usb_driver i1480u_driver = {
+        .name =         KBUILD_MODNAME,
+        .probe =        i1480u_probe,
+        .disconnect =   i1480u_disconnect,
+        .id_table =     i1480u_id_table,
+};
+
+static int __init i1480u_driver_init(void)
+{
+        return usb_register(&i1480u_driver);
+}
+module_init(i1480u_driver_init);
+
+
+static void __exit i1480u_driver_exit(void)
+{
+        usb_deregister(&i1480u_driver);
+}
+module_exit(i1480u_driver_exit);
+
+MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
+MODULE_DESCRIPTION("i1480 Wireless UWB Link WLP networking for USB");
+MODULE_LICENSE("GPL");
diff --git a/drivers/uwb/i1480/i1480u-wlp/netdev.c b/drivers/uwb/i1480/i1480u-wlp/netdev.c
new file mode 100644
index 000000000000..8802ac43d872
--- /dev/null
+++ b/drivers/uwb/i1480/i1480u-wlp/netdev.c
@@ -0,0 +1,368 @@
+/*
+ * WUSB Wire Adapter: WLP interface
+ * Driver for the Linux Network stack.
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ *
+ * Implementation of the netdevice linkage (except tx and rx related stuff).
+ *
+ * ROADMAP:
+ *
+ *   ENTRY POINTS (Net device):
+ *
+ *     i1480u_open(): Called when we ifconfig up the interface;
+ *                    associates to a UWB host controller, reserves
+ *                    bandwidth (MAS), sets up RX USB URB and starts
+ *                    the queue.
+ *
+ *     i1480u_stop(): Called when we ifconfig down a interface;
+ *                    reverses _open().
+ *
+ *     i1480u_set_config():
+ */
+
+#include <linux/if_arp.h>
+#include <linux/etherdevice.h>
+#include <linux/uwb/debug.h>
+#include "i1480u-wlp.h"
+
+struct i1480u_cmd_set_ip_mas {
+        struct uwb_rccb     rccb;
+        struct uwb_dev_addr addr;
+        u8                  stream;
+        u8                  owner;
+        u8                  type;       /* enum uwb_drp_type */
+        u8                  baMAS[32];
+} __attribute__((packed));
+
+
+static
+int i1480u_set_ip_mas(
+        struct uwb_rc *rc,
+        const struct uwb_dev_addr *dstaddr,
+        u8 stream, u8 owner, u8 type, unsigned long *mas)
+{
+
+        int result;
+        struct i1480u_cmd_set_ip_mas *cmd;
+        struct uwb_rc_evt_confirm reply;
+
+        result = -ENOMEM;
+        cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+        if (cmd == NULL)
+                goto error_kzalloc;
+        cmd->rccb.bCommandType = 0xfd;
+        cmd->rccb.wCommand = cpu_to_le16(0x000e);
+        cmd->addr = *dstaddr;
+        cmd->stream = stream;
+        cmd->owner = owner;
+        cmd->type = type;
+        if (mas == NULL)
+                memset(cmd->baMAS, 0x00, sizeof(cmd->baMAS));
+        else
+                memcpy(cmd->baMAS, mas, sizeof(cmd->baMAS));
+        reply.rceb.bEventType = 0xfd;
+        reply.rceb.wEvent = cpu_to_le16(0x000e);
+        result = uwb_rc_cmd(rc, "SET-IP-MAS", &cmd->rccb, sizeof(*cmd),
+                            &reply.rceb, sizeof(reply));
+        if (result < 0)
+                goto error_cmd;
+        if (reply.bResultCode != UWB_RC_RES_FAIL) {
+                dev_err(&rc->uwb_dev.dev,
+                        "SET-IP-MAS: command execution failed: %d\n",
+                        reply.bResultCode);
+                result = -EIO;
+        }
+error_cmd:
+        kfree(cmd);
+error_kzalloc:
+        return result;
+}
+
+/*
+ * Inform a WLP interface of a MAS reservation
+ *
+ * @rc is assumed refcnted.
+ */
+/* FIXME: detect if remote device is WLP capable? */
+static int i1480u_mas_set_dev(struct uwb_dev *uwb_dev, struct uwb_rc *rc,
+                              u8 stream, u8 owner, u8 type, unsigned long *mas)
+{
+        int result = 0;
+        struct device *dev = &rc->uwb_dev.dev;
+
+        result = i1480u_set_ip_mas(rc, &uwb_dev->dev_addr, stream, owner,
+                                   type, mas);
+        if (result < 0) {
+                char rcaddrbuf[UWB_ADDR_STRSIZE], devaddrbuf[UWB_ADDR_STRSIZE];
+                uwb_dev_addr_print(rcaddrbuf, sizeof(rcaddrbuf),
+                                   &rc->uwb_dev.dev_addr);
+                uwb_dev_addr_print(devaddrbuf, sizeof(devaddrbuf),
+                                   &uwb_dev->dev_addr);
+                dev_err(dev, "Set IP MAS (%s to %s) failed: %d\n",
+                        rcaddrbuf, devaddrbuf, result);
+        }
+        return result;
+}
+
+/**
+ * Called by bandwidth allocator when change occurs in reservation.
+ *
+ * @rsv:     The reservation that is being established, modified, or
+ *           terminated.
+ *
+ * When a reservation is established, modified, or terminated the upper layer
+ * (WLP here) needs set/update the currently available Media Access Slots
+ * that can be use for IP traffic.
+ *
+ * Our action taken during failure depends on how the reservation is being
+ * changed:
+ * - if reservation is being established we do nothing if we cannot set the
+ *   new MAS to be used
+ * - if reservation is being terminated we revert back to PCA whether the
+ *   SET IP MAS command succeeds or not.
+ */
+void i1480u_bw_alloc_cb(struct uwb_rsv *rsv)
+{
+        int result = 0;
+        struct i1480u *i1480u = rsv->pal_priv;
+        struct device *dev = &i1480u->usb_iface->dev;
+        struct uwb_dev *target_dev = rsv->target.dev;
+        struct uwb_rc *rc = i1480u->wlp.rc;
+        u8 stream = rsv->stream;
+        int type = rsv->type;
+        int is_owner = rsv->owner == &rc->uwb_dev;
+        unsigned long *bmp = rsv->mas.bm;
+
+        dev_err(dev, "WLP callback called - sending set ip mas\n");
+        /*user cannot change options while setting configuration*/
+        mutex_lock(&i1480u->options.mutex);
+        switch (rsv->state) {
+        case UWB_RSV_STATE_T_ACCEPTED:
+        case UWB_RSV_STATE_O_ESTABLISHED:
+                result = i1480u_mas_set_dev(target_dev, rc, stream, is_owner,
+                                        type, bmp);
+                if (result < 0) {
+                        dev_err(dev, "MAS reservation failed: %d\n", result);
+                        goto out;
+                }
+                if (is_owner) {
+                        wlp_tx_hdr_set_delivery_id_type(&i1480u->options.def_tx_hdr,
+                                                        WLP_DRP | stream);
+                        wlp_tx_hdr_set_rts_cts(&i1480u->options.def_tx_hdr, 0);
+                }
+                break;
+        case UWB_RSV_STATE_NONE:
+                /* revert back to PCA */
+                result = i1480u_mas_set_dev(target_dev, rc, stream, is_owner,
+                                            type, bmp);
+                if (result < 0)
+                        dev_err(dev, "MAS reservation failed: %d\n", result);
+                /* Revert to PCA even though SET IP MAS failed. */
+                wlp_tx_hdr_set_delivery_id_type(&i1480u->options.def_tx_hdr,
+                                                i1480u->options.pca_base_priority);
+                wlp_tx_hdr_set_rts_cts(&i1480u->options.def_tx_hdr, 1);
+                break;
+        default:
+                dev_err(dev, "unexpected WLP reservation state: %s (%d).\n",
+                        uwb_rsv_state_str(rsv->state), rsv->state);
+                break;
+        }
+out:
+        mutex_unlock(&i1480u->options.mutex);
+        return;
+}
+
+/**
+ *
+ * Called on 'ifconfig up'
+ */
+int i1480u_open(struct net_device *net_dev)
+{
+        int result;
+        struct i1480u *i1480u = netdev_priv(net_dev);
+        struct wlp *wlp = &i1480u->wlp;
+        struct uwb_rc *rc;
+        struct device *dev = &i1480u->usb_iface->dev;
+
+        rc = wlp->rc;
+        result = i1480u_rx_setup(i1480u);               /* Alloc RX stuff */
+        if (result < 0)
+                goto error_rx_setup;
+        netif_wake_queue(net_dev);
+#ifdef i1480u_FLOW_CONTROL
+        result = usb_submit_urb(i1480u->notif_urb, GFP_KERNEL);;
+        if (result < 0) {
+                dev_err(dev, "Can't submit notification URB: %d\n", result);
+                goto error_notif_urb_submit;
+        }
+#endif
+        i1480u->uwb_notifs_handler.cb = i1480u_uwb_notifs_cb;
+        i1480u->uwb_notifs_handler.data = i1480u;
+        if (uwb_bg_joined(rc))
+                netif_carrier_on(net_dev);
+        else
+                netif_carrier_off(net_dev);
+        uwb_notifs_register(rc, &i1480u->uwb_notifs_handler);
+        /* Interface is up with an address, now we can create WSS */
+        result = wlp_wss_setup(net_dev, &wlp->wss);
+        if (result < 0) {
+                dev_err(dev, "Can't create WSS: %d. \n", result);
+                goto error_notif_deregister;
+        }
+        return 0;
+error_notif_deregister:
+        uwb_notifs_deregister(rc, &i1480u->uwb_notifs_handler);
+#ifdef i1480u_FLOW_CONTROL
+error_notif_urb_submit:
+#endif
+        netif_stop_queue(net_dev);
+        i1480u_rx_release(i1480u);
+error_rx_setup:
+        return result;
+}
+
+
+/**
+ * Called on 'ifconfig down'
+ */
+int i1480u_stop(struct net_device *net_dev)
+{
+        struct i1480u *i1480u = netdev_priv(net_dev);
+        struct wlp *wlp = &i1480u->wlp;
+        struct uwb_rc *rc = wlp->rc;
+
+        BUG_ON(wlp->rc == NULL);
+        wlp_wss_remove(&wlp->wss);
+        uwb_notifs_deregister(rc, &i1480u->uwb_notifs_handler);
+        netif_carrier_off(net_dev);
+#ifdef i1480u_FLOW_CONTROL
+        usb_kill_urb(i1480u->notif_urb);
+#endif
+        netif_stop_queue(net_dev);
+        i1480u_rx_release(i1480u);
+        i1480u_tx_release(i1480u);
+        return 0;
+}
+
+
+/** Report statistics */
+struct net_device_stats *i1480u_get_stats(struct net_device *net_dev)
+{
+        struct i1480u *i1480u = netdev_priv(net_dev);
+        return &i1480u->stats;
+}
+
+
+/**
+ *
+ * Change the interface config--we probably don't have to do anything.
+ */
+int i1480u_set_config(struct net_device *net_dev, struct ifmap *map)
+{
+        int result;
+        struct i1480u *i1480u = netdev_priv(net_dev);
+        BUG_ON(i1480u->wlp.rc == NULL);
+        result = 0;
+        return result;
+}
+
+/**
+ * Change the MTU of the interface
+ */
+int i1480u_change_mtu(struct net_device *net_dev, int mtu)
+{
+        static union {
+                struct wlp_tx_hdr tx;
+                struct wlp_rx_hdr rx;
+        } i1480u_all_hdrs;
+
+        if (mtu < ETH_HLEN)     /* We encap eth frames */
+                return -ERANGE;
+        if (mtu > 4000 - sizeof(i1480u_all_hdrs))
+                return -ERANGE;
+        net_dev->mtu = mtu;
+        return 0;
+}
+
+
+/**
+ * Callback function to handle events from UWB
+ * When we see other devices we know the carrier is ok,
+ * if we are the only device in the beacon group we set the carrier
+ * state to off.
+ * */
+void i1480u_uwb_notifs_cb(void *data, struct uwb_dev *uwb_dev,
+                          enum uwb_notifs event)
+{
+        struct i1480u *i1480u = data;
+        struct net_device *net_dev = i1480u->net_dev;
+        struct device *dev = &i1480u->usb_iface->dev;
+        switch (event) {
+        case UWB_NOTIF_BG_JOIN:
+                netif_carrier_on(net_dev);
+                dev_info(dev, "Link is up\n");
+                break;
+        case UWB_NOTIF_BG_LEAVE:
+                netif_carrier_off(net_dev);
+                dev_info(dev, "Link is down\n");
+                break;
+        default:
+                dev_err(dev, "don't know how to handle event %d from uwb\n",
+                                event);
+        }
+}
+
+/**
+ * Stop the network queue
+ *
+ * Enable WLP substack to stop network queue. We also set the flow control
+ * threshold at this time to prevent the flow control from restarting the
+ * queue.
+ *
+ * we are loosing the current threshold value here ... FIXME?
+ */
+void i1480u_stop_queue(struct wlp *wlp)
+{
+        struct i1480u *i1480u = container_of(wlp, struct i1480u, wlp);
+        struct net_device *net_dev = i1480u->net_dev;
+        i1480u->tx_inflight.threshold = 0;
+        netif_stop_queue(net_dev);
+}
+
+/**
+ * Start the network queue
+ *
+ * Enable WLP substack to start network queue. Also re-enable the flow
+ * control to manage the queue again.
+ *
+ * We re-enable the flow control by storing the default threshold in the
+ * flow control threshold. This means that if the user modified the
+ * threshold before the queue was stopped and restarted that information
+ * will be lost. FIXME?
+ */
+void i1480u_start_queue(struct wlp *wlp)
+{
+        struct i1480u *i1480u = container_of(wlp, struct i1480u, wlp);
+        struct net_device *net_dev = i1480u->net_dev;
+        i1480u->tx_inflight.threshold = i1480u_TX_INFLIGHT_THRESHOLD;
+        netif_start_queue(net_dev);
+}
diff --git a/drivers/uwb/i1480/i1480u-wlp/rx.c b/drivers/uwb/i1480/i1480u-wlp/rx.c
new file mode 100644
index 000000000000..9fc035354a76
--- /dev/null
+++ b/drivers/uwb/i1480/i1480u-wlp/rx.c
@@ -0,0 +1,486 @@
+/*
+ * WUSB Wire Adapter: WLP interface
+ * Driver for the Linux Network stack.
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * i1480u's RX handling is simple. i1480u will send the received
+ * network packets broken up in fragments; 1 to N fragments make a
+ * packet, we assemble them together and deliver the packet with netif_rx().
+ *
+ * Beacuse each USB transfer is a *single* fragment (except when the
+ * transfer contains a first fragment), each URB called thus
+ * back contains one or two fragments. So we queue N URBs, each with its own
+ * fragment buffer. When a URB is done, we process it (adding to the
+ * current skb from the fragment buffer until complete). Once
+ * processed, we requeue the URB. There is always a bunch of URBs
+ * ready to take data, so the intergap should be minimal.
+ *
+ * An URB's transfer buffer is the data field of a socket buffer. This
+ * reduces copying as data can be passed directly to network layer. If a
+ * complete packet or 1st fragment is received the URB's transfer buffer is
+ * taken away from it and used to send data to the network layer. In this
+ * case a new transfer buffer is allocated to the URB before being requeued.
+ * If a "NEXT" or "LAST" fragment is received, the fragment contents is
+ * appended to the RX packet under construction and the transfer buffer
+ * is reused. To be able to use this buffer to assemble complete packets
+ * we set each buffer's size to that of the MAX ethernet packet that can
+ * be received. There is thus room for improvement in memory usage.
+ *
+ * When the max tx fragment size increases, we should be able to read
+ * data into the skbs directly with very simple code.
+ *
+ * ROADMAP:
+ *
+ *   ENTRY POINTS:
+ *
+ *     i1480u_rx_setup(): setup RX context [from i1480u_open()]
+ *
+ *     i1480u_rx_release(): release RX context [from i1480u_stop()]
+ *
+ *     i1480u_rx_cb(): called when the RX USB URB receives a
+ *                     packet. It removes the header and pushes it up
+ *                     the Linux netdev stack with netif_rx().
+ *
+ *       i1480u_rx_buffer()
+ *         i1480u_drop() and i1480u_fix()
+ *         i1480u_skb_deliver
+ *
+ */
+
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include "i1480u-wlp.h"
+
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+
+/**
+ * Setup the RX context
+ *
+ * Each URB is provided with a transfer_buffer that is the data field
+ * of a new socket buffer.
+ */
+int i1480u_rx_setup(struct i1480u *i1480u)
+{
+        int result, cnt;
+        struct device *dev = &i1480u->usb_iface->dev;
+        struct net_device *net_dev = i1480u->net_dev;
+        struct usb_endpoint_descriptor *epd;
+        struct sk_buff *skb;
+
+        /* Alloc RX stuff */
+        i1480u->rx_skb = NULL;  /* not in process of receiving packet */
+        result = -ENOMEM;
+        epd = &i1480u->usb_iface->cur_altsetting->endpoint[1].desc;
+        for (cnt = 0; cnt < i1480u_RX_BUFS; cnt++) {
+                struct i1480u_rx_buf *rx_buf = &i1480u->rx_buf[cnt];
+                rx_buf->i1480u = i1480u;
+                skb = dev_alloc_skb(i1480u_MAX_RX_PKT_SIZE);
+                if (!skb) {
+                        dev_err(dev,
+                                "RX: cannot allocate RX buffer %d\n", cnt);
+                        result = -ENOMEM;
+                        goto error;
+                }
+                skb->dev = net_dev;
+                skb->ip_summed = CHECKSUM_NONE;
+                skb_reserve(skb, 2);
+                rx_buf->data = skb;
+                rx_buf->urb = usb_alloc_urb(0, GFP_KERNEL);
+                if (unlikely(rx_buf->urb == NULL)) {
+                        dev_err(dev, "RX: cannot allocate URB %d\n", cnt);
+                        result = -ENOMEM;
+                        goto error;
+                }
+                usb_fill_bulk_urb(rx_buf->urb, i1480u->usb_dev,
+                          usb_rcvbulkpipe(i1480u->usb_dev, epd->bEndpointAddress),
+                          rx_buf->data->data, i1480u_MAX_RX_PKT_SIZE - 2,
+                          i1480u_rx_cb, rx_buf);
+                result = usb_submit_urb(rx_buf->urb, GFP_NOIO);
+                if (unlikely(result < 0)) {
+                        dev_err(dev, "RX: cannot submit URB %d: %d\n",
+                                cnt, result);
+                        goto error;
+                }
+        }
+        return 0;
+
+error:
+        i1480u_rx_release(i1480u);
+        return result;
+}
+
+
+/** Release resources associated to the rx context */
+void i1480u_rx_release(struct i1480u *i1480u)
+{
+        int cnt;
+        for (cnt = 0; cnt < i1480u_RX_BUFS; cnt++) {
+                if (i1480u->rx_buf[cnt].data)
+                        dev_kfree_skb(i1480u->rx_buf[cnt].data);
+                if (i1480u->rx_buf[cnt].urb) {
+                        usb_kill_urb(i1480u->rx_buf[cnt].urb);
+                        usb_free_urb(i1480u->rx_buf[cnt].urb);
+                }
+        }
+        if (i1480u->rx_skb != NULL)
+                dev_kfree_skb(i1480u->rx_skb);
+}
+
+static
+void i1480u_rx_unlink_urbs(struct i1480u *i1480u)
+{
+        int cnt;
+        for (cnt = 0; cnt < i1480u_RX_BUFS; cnt++) {
+                if (i1480u->rx_buf[cnt].urb)
+                        usb_unlink_urb(i1480u->rx_buf[cnt].urb);
+        }
+}
+
+/** Fix an out-of-sequence packet */
+#define i1480u_fix(i1480u, msg...)                      \
+do {                                                    \
+        if (printk_ratelimit())                         \
+                dev_err(&i1480u->usb_iface->dev, msg);  \
+        dev_kfree_skb_irq(i1480u->rx_skb);              \
+        i1480u->rx_skb = NULL;                          \
+        i1480u->rx_untd_pkt_size = 0;                   \
+} while (0)
+
+
+/** Drop an out-of-sequence packet */
+#define i1480u_drop(i1480u, msg...)                     \
+do {                                                    \
+        if (printk_ratelimit())                         \
+                dev_err(&i1480u->usb_iface->dev, msg);  \
+        i1480u->stats.rx_dropped++;                     \
+} while (0)
+
+
+
+
+/** Finalizes setting up the SKB and delivers it
+ *
+ * We first pass the incoming frame to WLP substack for verification. It
+ * may also be a WLP association frame in which case WLP will take over the
+ * processing. If WLP does not take it over it will still verify it, if the
+ * frame is invalid the skb will be freed by WLP and we will not continue
+ * parsing.
+ * */
+static
+void i1480u_skb_deliver(struct i1480u *i1480u)
+{
+        int should_parse;
+        struct net_device *net_dev = i1480u->net_dev;
+        struct device *dev = &i1480u->usb_iface->dev;
+
+        d_printf(6, dev, "RX delivered pre skb(%p), %u bytes\n",
+                 i1480u->rx_skb, i1480u->rx_skb->len);
+        d_dump(7, dev, i1480u->rx_skb->data, i1480u->rx_skb->len);
+        should_parse = wlp_receive_frame(dev, &i1480u->wlp, i1480u->rx_skb,
+                                         &i1480u->rx_srcaddr);
+        if (!should_parse)
+                goto out;
+        i1480u->rx_skb->protocol = eth_type_trans(i1480u->rx_skb, net_dev);
+        d_printf(5, dev, "RX delivered skb(%p), %u bytes\n",
+                 i1480u->rx_skb, i1480u->rx_skb->len);
+        d_dump(7, dev, i1480u->rx_skb->data,
+               i1480u->rx_skb->len > 72 ? 72 : i1480u->rx_skb->len);
+        i1480u->stats.rx_packets++;
+        i1480u->stats.rx_bytes += i1480u->rx_untd_pkt_size;
+        net_dev->last_rx = jiffies;
+        /* FIXME: flow control: check netif_rx() retval */
+
+        netif_rx(i1480u->rx_skb);               /* deliver */
+out:
+        i1480u->rx_skb = NULL;
+        i1480u->rx_untd_pkt_size = 0;
+}
+
+
+/**
+ * Process a buffer of data received from the USB RX endpoint
+ *
+ * First fragment arrives with next or last fragment. All other fragments
+ * arrive alone.
+ *
+ * /me hates long functions.
+ */
+static
+void i1480u_rx_buffer(struct i1480u_rx_buf *rx_buf)
+{
+        unsigned pkt_completed = 0;     /* !0 when we got all pkt fragments */
+        size_t untd_hdr_size, untd_frg_size;
+        size_t i1480u_hdr_size;
+        struct wlp_rx_hdr *i1480u_hdr = NULL;
+
+        struct i1480u *i1480u = rx_buf->i1480u;
+        struct sk_buff *skb = rx_buf->data;
+        int size_left = rx_buf->urb->actual_length;
+        void *ptr = rx_buf->urb->transfer_buffer; /* also rx_buf->data->data */
+        struct untd_hdr *untd_hdr;
+
+        struct net_device *net_dev = i1480u->net_dev;
+        struct device *dev = &i1480u->usb_iface->dev;
+        struct sk_buff *new_skb;
+
+#if 0
+        dev_fnstart(dev,
+                    "(i1480u %p ptr %p size_left %zu)\n", i1480u, ptr, size_left);
+        dev_err(dev, "RX packet, %zu bytes\n", size_left);
+        dump_bytes(dev, ptr, size_left);
+#endif
+        i1480u_hdr_size = sizeof(struct wlp_rx_hdr);
+
+        while (size_left > 0) {
+                if (pkt_completed) {
+                        i1480u_drop(i1480u, "RX: fragment follows completed"
+                                         "packet in same buffer. Dropping\n");
+                        break;
+                }
+                untd_hdr = ptr;
+                if (size_left < sizeof(*untd_hdr)) {    /*  Check the UNTD header */
+                        i1480u_drop(i1480u, "RX: short UNTD header! Dropping\n");
+                        goto out;
+                }
+                if (unlikely(untd_hdr_rx_tx(untd_hdr) == 0)) {  /* Paranoia: TX set? */
+                        i1480u_drop(i1480u, "RX: TX bit set! Dropping\n");
+                        goto out;
+                }
+                switch (untd_hdr_type(untd_hdr)) {      /* Check the UNTD header type */
+                case i1480u_PKT_FRAG_1ST: {
+                        struct untd_hdr_1st *untd_hdr_1st = (void *) untd_hdr;
+                        dev_dbg(dev, "1st fragment\n");
+                        untd_hdr_size = sizeof(struct untd_hdr_1st);
+                        if (i1480u->rx_skb != NULL)
+                                i1480u_fix(i1480u, "RX: 1st fragment out of "
+                                        "sequence! Fixing\n");
+                        if (size_left < untd_hdr_size + i1480u_hdr_size) {
+                                i1480u_drop(i1480u, "RX: short 1st fragment! "
+                                        "Dropping\n");
+                                goto out;
+                        }
+                        i1480u->rx_untd_pkt_size = le16_to_cpu(untd_hdr->len)
+                                                 - i1480u_hdr_size;
+                        untd_frg_size = le16_to_cpu(untd_hdr_1st->fragment_len);
+                        if (size_left < untd_hdr_size + untd_frg_size) {
+                                i1480u_drop(i1480u,
+                                            "RX: short payload! Dropping\n");
+                                goto out;
+                        }
+                        i1480u->rx_skb = skb;
+                        i1480u_hdr = (void *) untd_hdr_1st + untd_hdr_size;
+                        i1480u->rx_srcaddr = i1480u_hdr->srcaddr;
+                        skb_put(i1480u->rx_skb, untd_hdr_size + untd_frg_size);
+                        skb_pull(i1480u->rx_skb, untd_hdr_size + i1480u_hdr_size);
+                        stats_add_sample(&i1480u->lqe_stats, (s8) i1480u_hdr->LQI - 7);
+                        stats_add_sample(&i1480u->rssi_stats, i1480u_hdr->RSSI + 18);
+                        rx_buf->data = NULL; /* need to create new buffer */
+                        break;
+                }
+                case i1480u_PKT_FRAG_NXT: {
+                        dev_dbg(dev, "nxt fragment\n");
+                        untd_hdr_size = sizeof(struct untd_hdr_rst);
+                        if (i1480u->rx_skb == NULL) {
+                                i1480u_drop(i1480u, "RX: next fragment out of "
+                                            "sequence! Dropping\n");
+                                goto out;
+                        }
+                        if (size_left < untd_hdr_size) {
+                                i1480u_drop(i1480u, "RX: short NXT fragment! "
+                                            "Dropping\n");
+                                goto out;
+                        }
+                        untd_frg_size = le16_to_cpu(untd_hdr->len);
+                        if (size_left < untd_hdr_size + untd_frg_size) {
+                                i1480u_drop(i1480u,
+                                            "RX: short payload! Dropping\n");
+                                goto out;
+                        }
+                        memmove(skb_put(i1480u->rx_skb, untd_frg_size),
+                                        ptr + untd_hdr_size, untd_frg_size);
+                        break;
+                }
+                case i1480u_PKT_FRAG_LST: {
+                        dev_dbg(dev, "Lst fragment\n");
+                        untd_hdr_size = sizeof(struct untd_hdr_rst);
+                        if (i1480u->rx_skb == NULL) {
+                                i1480u_drop(i1480u, "RX: last fragment out of "
+                                            "sequence! Dropping\n");
+                                goto out;
+                        }
+                        if (size_left < untd_hdr_size) {
+                                i1480u_drop(i1480u, "RX: short LST fragment! "
+                                            "Dropping\n");
+                                goto out;
+                        }
+                        untd_frg_size = le16_to_cpu(untd_hdr->len);
+                        if (size_left < untd_frg_size + untd_hdr_size) {
+                                i1480u_drop(i1480u,
+                                            "RX: short payload! Dropping\n");
+                                goto out;
+                        }
+                        memmove(skb_put(i1480u->rx_skb, untd_frg_size),
+                                        ptr + untd_hdr_size, untd_frg_size);
+                        pkt_completed = 1;
+                        break;
+                }
+                case i1480u_PKT_FRAG_CMP: {
+                        dev_dbg(dev, "cmp fragment\n");
+                        untd_hdr_size = sizeof(struct untd_hdr_cmp);
+                        if (i1480u->rx_skb != NULL)
+                                i1480u_fix(i1480u, "RX: fix out-of-sequence CMP"
+                                           " fragment!\n");
+                        if (size_left < untd_hdr_size + i1480u_hdr_size) {
+                                i1480u_drop(i1480u, "RX: short CMP fragment! "
+                                            "Dropping\n");
+                                goto out;
+                        }
+                        i1480u->rx_untd_pkt_size = le16_to_cpu(untd_hdr->len);
+                        untd_frg_size = i1480u->rx_untd_pkt_size;
+                        if (size_left < i1480u->rx_untd_pkt_size + untd_hdr_size) {
+                                i1480u_drop(i1480u,
+                                            "RX: short payload! Dropping\n");
+                                goto out;
+                        }
+                        i1480u->rx_skb = skb;
+                        i1480u_hdr = (void *) untd_hdr + untd_hdr_size;
+                        i1480u->rx_srcaddr = i1480u_hdr->srcaddr;
+                        stats_add_sample(&i1480u->lqe_stats, (s8) i1480u_hdr->LQI - 7);
+                        stats_add_sample(&i1480u->rssi_stats, i1480u_hdr->RSSI + 18);
+                        skb_put(i1480u->rx_skb, untd_hdr_size + i1480u->rx_untd_pkt_size);
+                        skb_pull(i1480u->rx_skb, untd_hdr_size + i1480u_hdr_size);
+                        rx_buf->data = NULL;    /* for hand off skb to network stack */
+                        pkt_completed = 1;
+                        i1480u->rx_untd_pkt_size -= i1480u_hdr_size; /* accurate stat */
+                        break;
+                }
+                default:
+                        i1480u_drop(i1480u, "RX: unknown packet type %u! "
+                                    "Dropping\n", untd_hdr_type(untd_hdr));
+                        goto out;
+                }
+                size_left -= untd_hdr_size + untd_frg_size;
+                if (size_left > 0)
+                        ptr += untd_hdr_size + untd_frg_size;
+        }
+        if (pkt_completed)
+                i1480u_skb_deliver(i1480u);
+out:
+        /* recreate needed RX buffers*/
+        if (rx_buf->data == NULL) {
+                /* buffer is being used to receive packet, create new */
+                new_skb = dev_alloc_skb(i1480u_MAX_RX_PKT_SIZE);
+                if (!new_skb) {
+                        if (printk_ratelimit())
+                                dev_err(dev,
+                                "RX: cannot allocate RX buffer\n");
+                } else {
+                        new_skb->dev = net_dev;
+                        new_skb->ip_summed = CHECKSUM_NONE;
+                        skb_reserve(new_skb, 2);
+                        rx_buf->data = new_skb;
+                }
+        }
+        return;
+}
+
+
+/**
+ * Called when an RX URB has finished receiving or has found some kind
+ * of error condition.
+ *
+ * LIMITATIONS:
+ *
+ *  - We read USB-transfers, each transfer contains a SINGLE fragment
+ *    (can contain a complete packet, or a 1st, next, or last fragment
+ *    of a packet).
+ *    Looks like a transfer can contain more than one fragment (07/18/06)
+ *
+ *  - Each transfer buffer is the size of the maximum packet size (minus
+ *    headroom), i1480u_MAX_PKT_SIZE - 2
+ *
+ *  - We always read the full USB-transfer, no partials.
+ *
+ *  - Each transfer is read directly into a skb. This skb will be used to
+ *    send data to the upper layers if it is the first fragment or a complete
+ *    packet. In the other cases the data will be copied from the skb to
+ *    another skb that is being prepared for the upper layers from a prev
+ *    first fragment.
+ *
+ * It is simply too much of a pain. Gosh, there should be a unified
+ * SG infrastructure for *everything* [so that I could declare a SG
+ * buffer, pass it to USB for receiving, append some space to it if
+ * I wish, receive more until I have the whole chunk, adapt
+ * pointers on each fragment to remove hardware headers and then
+ * attach that to an skbuff and netif_rx()].
+ */
+void i1480u_rx_cb(struct urb *urb)
+{
+        int result;
+        int do_parse_buffer = 1;
+        struct i1480u_rx_buf *rx_buf = urb->context;
+        struct i1480u *i1480u = rx_buf->i1480u;
+        struct device *dev = &i1480u->usb_iface->dev;
+        unsigned long flags;
+        u8 rx_buf_idx = rx_buf - i1480u->rx_buf;
+
+        switch (urb->status) {
+        case 0:
+                break;
+        case -ECONNRESET:       /* Not an error, but a controlled situation; */
+        case -ENOENT:           /* (we killed the URB)...so, no broadcast */
+        case -ESHUTDOWN:        /* going away! */
+                dev_err(dev, "RX URB[%u]: goind down %d\n",
+                        rx_buf_idx, urb->status);
+                goto error;
+        default:
+                dev_err(dev, "RX URB[%u]: unknown status %d\n",
+                        rx_buf_idx, urb->status);
+                if (edc_inc(&i1480u->rx_errors, EDC_MAX_ERRORS,
+                                        EDC_ERROR_TIMEFRAME)) {
+                        dev_err(dev, "RX: max acceptable errors exceeded,"
+                                        " resetting device.\n");
+                        i1480u_rx_unlink_urbs(i1480u);
+                        wlp_reset_all(&i1480u->wlp);
+                        goto error;
+                }
+                do_parse_buffer = 0;
+                break;
+        }
+        spin_lock_irqsave(&i1480u->lock, flags);
+        /* chew the data fragments, extract network packets */
+        if (do_parse_buffer) {
+                i1480u_rx_buffer(rx_buf);
+                if (rx_buf->data) {
+                        rx_buf->urb->transfer_buffer = rx_buf->data->data;
+                        result = usb_submit_urb(rx_buf->urb, GFP_ATOMIC);
+                        if (result < 0) {
+                                dev_err(dev, "RX URB[%u]: cannot submit %d\n",
+                                        rx_buf_idx, result);
+                        }
+                }
+        }
+        spin_unlock_irqrestore(&i1480u->lock, flags);
+error:
+        return;
+}
+
diff --git a/drivers/uwb/i1480/i1480u-wlp/sysfs.c b/drivers/uwb/i1480/i1480u-wlp/sysfs.c
new file mode 100644
index 000000000000..a1d8ca6ac935
--- /dev/null
+++ b/drivers/uwb/i1480/i1480u-wlp/sysfs.c
@@ -0,0 +1,408 @@
+/*
+ * WUSB Wire Adapter: WLP interface
+ * Sysfs interfaces
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ */
+
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/uwb/debug.h>
+#include <linux/device.h>
+#include "i1480u-wlp.h"
+
+
+/**
+ *
+ * @dev: Class device from the net_device; assumed refcnted.
+ *
+ * Yes, I don't lock--we assume it is refcounted and I am getting a
+ * single byte value that is kind of atomic to read.
+ */
+ssize_t uwb_phy_rate_show(const struct wlp_options *options, char *buf)
+{
+        return sprintf(buf, "%u\n",
+                       wlp_tx_hdr_phy_rate(&options->def_tx_hdr));
+}
+EXPORT_SYMBOL_GPL(uwb_phy_rate_show);
+
+
+ssize_t uwb_phy_rate_store(struct wlp_options *options,
+                           const char *buf, size_t size)
+{
+        ssize_t result;
+        unsigned rate;
+
+        result = sscanf(buf, "%u\n", &rate);
+        if (result != 1) {
+                result = -EINVAL;
+                goto out;
+        }
+        result = -EINVAL;
+        if (rate >= UWB_PHY_RATE_INVALID)
+                goto out;
+        wlp_tx_hdr_set_phy_rate(&options->def_tx_hdr, rate);
+        result = 0;
+out:
+        return result < 0 ? result : size;
+}
+EXPORT_SYMBOL_GPL(uwb_phy_rate_store);
+
+
+ssize_t uwb_rts_cts_show(const struct wlp_options *options, char *buf)
+{
+        return sprintf(buf, "%u\n",
+                       wlp_tx_hdr_rts_cts(&options->def_tx_hdr));
+}
+EXPORT_SYMBOL_GPL(uwb_rts_cts_show);
+
+
+ssize_t uwb_rts_cts_store(struct wlp_options *options,
+                          const char *buf, size_t size)
+{
+        ssize_t result;
+        unsigned value;
+
+        result = sscanf(buf, "%u\n", &value);
+        if (result != 1) {
+                result = -EINVAL;
+                goto out;
+        }
+        result = -EINVAL;
+        wlp_tx_hdr_set_rts_cts(&options->def_tx_hdr, !!value);
+        result = 0;
+out:
+        return result < 0 ? result : size;
+}
+EXPORT_SYMBOL_GPL(uwb_rts_cts_store);
+
+
+ssize_t uwb_ack_policy_show(const struct wlp_options *options, char *buf)
+{
+        return sprintf(buf, "%u\n",
+                       wlp_tx_hdr_ack_policy(&options->def_tx_hdr));
+}
+EXPORT_SYMBOL_GPL(uwb_ack_policy_show);
+
+
+ssize_t uwb_ack_policy_store(struct wlp_options *options,
+                             const char *buf, size_t size)
+{
+        ssize_t result;
+        unsigned value;
+
+        result = sscanf(buf, "%u\n", &value);
+        if (result != 1 || value > UWB_ACK_B_REQ) {
+                result = -EINVAL;
+                goto out;
+        }
+        wlp_tx_hdr_set_ack_policy(&options->def_tx_hdr, value);
+        result = 0;
+out:
+        return result < 0 ? result : size;
+}
+EXPORT_SYMBOL_GPL(uwb_ack_policy_store);
+
+
+/**
+ * Show the PCA base priority.
+ *
+ * We can access without locking, as the value is (for now) orthogonal
+ * to other values.
+ */
+ssize_t uwb_pca_base_priority_show(const struct wlp_options *options,
+                                   char *buf)
+{
+        return sprintf(buf, "%u\n",
+                       options->pca_base_priority);
+}
+EXPORT_SYMBOL_GPL(uwb_pca_base_priority_show);
+
+
+/**
+ * Set the PCA base priority.
+ *
+ * We can access without locking, as the value is (for now) orthogonal
+ * to other values.
+ */
+ssize_t uwb_pca_base_priority_store(struct wlp_options *options,
+                                    const char *buf, size_t size)
+{
+        ssize_t result = -EINVAL;
+        u8 pca_base_priority;
+
+        result = sscanf(buf, "%hhu\n", &pca_base_priority);
+        if (result != 1) {
+                result = -EINVAL;
+                goto out;
+        }
+        result = -EINVAL;
+        if (pca_base_priority >= 8)
+                goto out;
+        options->pca_base_priority = pca_base_priority;
+        /* Update TX header if we are currently using PCA. */
+        if (result >= 0 && (wlp_tx_hdr_delivery_id_type(&options->def_tx_hdr) & WLP_DRP) == 0)
+                wlp_tx_hdr_set_delivery_id_type(&options->def_tx_hdr, options->pca_base_priority);
+        result = 0;
+out:
+        return result < 0 ? result : size;
+}
+EXPORT_SYMBOL_GPL(uwb_pca_base_priority_store);
+
+/**
+ * Show current inflight values
+ *
+ * Will print the current MAX and THRESHOLD values for the basic flow
+ * control. In addition it will report how many times the TX queue needed
+ * to be restarted since the last time this query was made.
+ */
+static ssize_t wlp_tx_inflight_show(struct i1480u_tx_inflight *inflight,
+                                    char *buf)
+{
+        ssize_t result;
+        unsigned long sec_elapsed = (jiffies - inflight->restart_ts)/HZ;
+        unsigned long restart_count = atomic_read(&inflight->restart_count);
+
+        result = scnprintf(buf, PAGE_SIZE, "%lu %lu %d %lu %lu %lu\n"
+                           "#read: threshold max inflight_count restarts "
+                           "seconds restarts/sec\n"
+                           "#write: threshold max\n",
+                           inflight->threshold, inflight->max,
+                           atomic_read(&inflight->count),
+                           restart_count, sec_elapsed,
+                           sec_elapsed == 0 ? 0 : restart_count/sec_elapsed);
+        inflight->restart_ts = jiffies;
+        atomic_set(&inflight->restart_count, 0);
+        return result;
+}
+
+static
+ssize_t wlp_tx_inflight_store(struct i1480u_tx_inflight *inflight,
+                                const char *buf, size_t size)
+{
+        unsigned long in_threshold, in_max;
+        ssize_t result;
+        result = sscanf(buf, "%lu %lu", &in_threshold, &in_max);
+        if (result != 2)
+                return -EINVAL;
+        if (in_max <= in_threshold)
+                return -EINVAL;
+        inflight->max = in_max;
+        inflight->threshold = in_threshold;
+        return size;
+}
+/*
+ * Glue (or function adaptors) for accesing info on sysfs
+ *
+ * [we need this indirection because the PCI driver does almost the
+ * same]
+ *
+ * Linux 2.6.21 changed how 'struct netdevice' does attributes (from
+ * having a 'struct class_dev' to having a 'struct device'). That is
+ * quite of a pain.
+ *
+ * So we try to abstract that here. i1480u_SHOW() and i1480u_STORE()
+ * create adaptors for extracting the 'struct i1480u' from a 'struct
+ * dev' and calling a function for doing a sysfs operation (as we have
+ * them factorized already). i1480u_ATTR creates the attribute file
+ * (CLASS_DEVICE_ATTR or DEVICE_ATTR) and i1480u_ATTR_NAME produces a
+ * class_device_attr_NAME or device_attr_NAME (for group registration).
+ */
+#include <linux/version.h>
+
+#define i1480u_SHOW(name, fn, param)                            \
+static ssize_t i1480u_show_##name(struct device *dev,           \
+                                  struct device_attribute *attr,\
+                                  char *buf)                    \
+{                                                               \
+        struct i1480u *i1480u = netdev_priv(to_net_dev(dev));   \
+        return fn(&i1480u->param, buf);                         \
+}
+
+#define i1480u_STORE(name, fn, param)                           \
+static ssize_t i1480u_store_##name(struct device *dev,          \
+                                   struct device_attribute *attr,\
+                                   const char *buf, size_t size)\
+{                                                               \
+        struct i1480u *i1480u = netdev_priv(to_net_dev(dev));   \
+        return fn(&i1480u->param, buf, size);                   \
+}
+
+#define i1480u_ATTR(name, perm) static DEVICE_ATTR(name, perm,  \
+                                             i1480u_show_##name,\
+                                             i1480u_store_##name)
+
+#define i1480u_ATTR_SHOW(name) static DEVICE_ATTR(name,         \
+                                        S_IRUGO,                \
+                                        i1480u_show_##name, NULL)
+
+#define i1480u_ATTR_NAME(a) (dev_attr_##a)
+
+
+/*
+ * Sysfs adaptors
+ */
+i1480u_SHOW(uwb_phy_rate, uwb_phy_rate_show, options);
+i1480u_STORE(uwb_phy_rate, uwb_phy_rate_store, options);
+i1480u_ATTR(uwb_phy_rate, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(uwb_rts_cts, uwb_rts_cts_show, options);
+i1480u_STORE(uwb_rts_cts, uwb_rts_cts_store, options);
+i1480u_ATTR(uwb_rts_cts, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(uwb_ack_policy, uwb_ack_policy_show, options);
+i1480u_STORE(uwb_ack_policy, uwb_ack_policy_store, options);
+i1480u_ATTR(uwb_ack_policy, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(uwb_pca_base_priority, uwb_pca_base_priority_show, options);
+i1480u_STORE(uwb_pca_base_priority, uwb_pca_base_priority_store, options);
+i1480u_ATTR(uwb_pca_base_priority, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(wlp_eda, wlp_eda_show, wlp);
+i1480u_STORE(wlp_eda, wlp_eda_store, wlp);
+i1480u_ATTR(wlp_eda, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(wlp_uuid, wlp_uuid_show, wlp);
+i1480u_STORE(wlp_uuid, wlp_uuid_store, wlp);
+i1480u_ATTR(wlp_uuid, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(wlp_dev_name, wlp_dev_name_show, wlp);
+i1480u_STORE(wlp_dev_name, wlp_dev_name_store, wlp);
+i1480u_ATTR(wlp_dev_name, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(wlp_dev_manufacturer, wlp_dev_manufacturer_show, wlp);
+i1480u_STORE(wlp_dev_manufacturer, wlp_dev_manufacturer_store, wlp);
+i1480u_ATTR(wlp_dev_manufacturer, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(wlp_dev_model_name, wlp_dev_model_name_show, wlp);
+i1480u_STORE(wlp_dev_model_name, wlp_dev_model_name_store, wlp);
+i1480u_ATTR(wlp_dev_model_name, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(wlp_dev_model_nr, wlp_dev_model_nr_show, wlp);
+i1480u_STORE(wlp_dev_model_nr, wlp_dev_model_nr_store, wlp);
+i1480u_ATTR(wlp_dev_model_nr, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(wlp_dev_serial, wlp_dev_serial_show, wlp);
+i1480u_STORE(wlp_dev_serial, wlp_dev_serial_store, wlp);
+i1480u_ATTR(wlp_dev_serial, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(wlp_dev_prim_category, wlp_dev_prim_category_show, wlp);
+i1480u_STORE(wlp_dev_prim_category, wlp_dev_prim_category_store, wlp);
+i1480u_ATTR(wlp_dev_prim_category, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(wlp_dev_prim_OUI, wlp_dev_prim_OUI_show, wlp);
+i1480u_STORE(wlp_dev_prim_OUI, wlp_dev_prim_OUI_store, wlp);
+i1480u_ATTR(wlp_dev_prim_OUI, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(wlp_dev_prim_OUI_sub, wlp_dev_prim_OUI_sub_show, wlp);
+i1480u_STORE(wlp_dev_prim_OUI_sub, wlp_dev_prim_OUI_sub_store, wlp);
+i1480u_ATTR(wlp_dev_prim_OUI_sub, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(wlp_dev_prim_subcat, wlp_dev_prim_subcat_show, wlp);
+i1480u_STORE(wlp_dev_prim_subcat, wlp_dev_prim_subcat_store, wlp);
+i1480u_ATTR(wlp_dev_prim_subcat, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(wlp_neighborhood, wlp_neighborhood_show, wlp);
+i1480u_ATTR_SHOW(wlp_neighborhood);
+
+i1480u_SHOW(wss_activate, wlp_wss_activate_show, wlp.wss);
+i1480u_STORE(wss_activate, wlp_wss_activate_store, wlp.wss);
+i1480u_ATTR(wss_activate, S_IRUGO | S_IWUSR);
+
+/*
+ * Show the (min, max, avg) Line Quality Estimate (LQE, in dB) as over
+ * the last 256 received WLP frames (ECMA-368 13.3).
+ *
+ * [the -7dB that have to be substracted from the LQI to make the LQE
+ * are already taken into account].
+ */
+i1480u_SHOW(wlp_lqe, stats_show, lqe_stats);
+i1480u_STORE(wlp_lqe, stats_store, lqe_stats);
+i1480u_ATTR(wlp_lqe, S_IRUGO | S_IWUSR);
+
+/*
+ * Show the Receive Signal Strength Indicator averaged over all the
+ * received WLP frames (ECMA-368 13.3). Still is not clear what
+ * this value is, but is kind of a percentage of the signal strength
+ * at the antenna.
+ */
+i1480u_SHOW(wlp_rssi, stats_show, rssi_stats);
+i1480u_STORE(wlp_rssi, stats_store, rssi_stats);
+i1480u_ATTR(wlp_rssi, S_IRUGO | S_IWUSR);
+
+/**
+ * We maintain a basic flow control counter. "count" how many TX URBs are
+ * outstanding. Only allow "max"
+ * TX URBs to be outstanding. If this value is reached the queue will be
+ * stopped. The queue will be restarted when there are
+ * "threshold" URBs outstanding.
+ */
+i1480u_SHOW(wlp_tx_inflight, wlp_tx_inflight_show, tx_inflight);
+i1480u_STORE(wlp_tx_inflight, wlp_tx_inflight_store, tx_inflight);
+i1480u_ATTR(wlp_tx_inflight, S_IRUGO | S_IWUSR);
+
+static struct attribute *i1480u_attrs[] = {
+        &i1480u_ATTR_NAME(uwb_phy_rate).attr,
+        &i1480u_ATTR_NAME(uwb_rts_cts).attr,
+        &i1480u_ATTR_NAME(uwb_ack_policy).attr,
+        &i1480u_ATTR_NAME(uwb_pca_base_priority).attr,
+        &i1480u_ATTR_NAME(wlp_lqe).attr,
+        &i1480u_ATTR_NAME(wlp_rssi).attr,
+        &i1480u_ATTR_NAME(wlp_eda).attr,
+        &i1480u_ATTR_NAME(wlp_uuid).attr,
+        &i1480u_ATTR_NAME(wlp_dev_name).attr,
+        &i1480u_ATTR_NAME(wlp_dev_manufacturer).attr,
+        &i1480u_ATTR_NAME(wlp_dev_model_name).attr,
+        &i1480u_ATTR_NAME(wlp_dev_model_nr).attr,
+        &i1480u_ATTR_NAME(wlp_dev_serial).attr,
+        &i1480u_ATTR_NAME(wlp_dev_prim_category).attr,
+        &i1480u_ATTR_NAME(wlp_dev_prim_OUI).attr,
+        &i1480u_ATTR_NAME(wlp_dev_prim_OUI_sub).attr,
+        &i1480u_ATTR_NAME(wlp_dev_prim_subcat).attr,
+        &i1480u_ATTR_NAME(wlp_neighborhood).attr,
+        &i1480u_ATTR_NAME(wss_activate).attr,
+        &i1480u_ATTR_NAME(wlp_tx_inflight).attr,
+        NULL,
+};
+
+static struct attribute_group i1480u_attr_group = {
+        .name = NULL,   /* we want them in the same directory */
+        .attrs = i1480u_attrs,
+};
+
+int i1480u_sysfs_setup(struct i1480u *i1480u)
+{
+        int result;
+        struct device *dev = &i1480u->usb_iface->dev;
+        result = sysfs_create_group(&i1480u->net_dev->dev.kobj,
+                                    &i1480u_attr_group);
+        if (result < 0)
+                dev_err(dev, "cannot initialize sysfs attributes: %d\n",
+                        result);
+        return result;
+}
+
+
+void i1480u_sysfs_release(struct i1480u *i1480u)
+{
+        sysfs_remove_group(&i1480u->net_dev->dev.kobj,
+                           &i1480u_attr_group);
+}
diff --git a/drivers/uwb/i1480/i1480u-wlp/tx.c b/drivers/uwb/i1480/i1480u-wlp/tx.c
new file mode 100644
index 000000000000..3426bfb68240
--- /dev/null
+++ b/drivers/uwb/i1480/i1480u-wlp/tx.c
@@ -0,0 +1,632 @@
+/*
+ * WUSB Wire Adapter: WLP interface
+ * Deal with TX (massaging data to transmit, handling it)
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * Transmission engine. Get an skb, create from that a WLP transmit
+ * context, add a WLP TX header (which we keep prefilled in the
+ * device's instance), fill out the target-specific fields and
+ * fire it.
+ *
+ * ROADMAP:
+ *
+ *   Entry points:
+ *
+ *     i1480u_tx_release(): called by i1480u_disconnect() to release
+ *                          pending tx contexts.
+ *
+ *     i1480u_tx_cb(): callback for TX contexts (USB URBs)
+ *       i1480u_tx_destroy():
+ *
+ *     i1480u_tx_timeout(): called for timeout handling from the
+ *                          network stack.
+ *
+ *     i1480u_hard_start_xmit(): called for transmitting an skb from
+ *                               the network stack. Will interact with WLP
+ *                               substack to verify and prepare frame.
+ *       i1480u_xmit_frame(): actual transmission on hardware
+ *
+ *         i1480u_tx_create()       Creates TX context
+ *            i1480u_tx_create_1()    For packets in 1 fragment
+ *            i1480u_tx_create_n()    For packets in >1 fragments
+ *
+ * TODO:
+ *
+ * - FIXME: rewrite using usb_sg_*(), add asynch support to
+ *          usb_sg_*(). It might not make too much sense as most of
+ *          the times the MTU will be smaller than one page...
+ */
+
+#include "i1480u-wlp.h"
+#define D_LOCAL 5
+#include <linux/uwb/debug.h>
+
+enum {
+        /* This is only for Next and Last TX packets */
+        i1480u_MAX_PL_SIZE = i1480u_MAX_FRG_SIZE
+                - sizeof(struct untd_hdr_rst),
+};
+
+/** Free resources allocated to a i1480u tx context. */
+static
+void i1480u_tx_free(struct i1480u_tx *wtx)
+{
+        kfree(wtx->buf);
+        if (wtx->skb)
+                dev_kfree_skb_irq(wtx->skb);
+        usb_free_urb(wtx->urb);
+        kfree(wtx);
+}
+
+static
+void i1480u_tx_destroy(struct i1480u *i1480u, struct i1480u_tx *wtx)
+{
+        unsigned long flags;
+        spin_lock_irqsave(&i1480u->tx_list_lock, flags);        /* not active any more */
+        list_del(&wtx->list_node);
+        i1480u_tx_free(wtx);
+        spin_unlock_irqrestore(&i1480u->tx_list_lock, flags);
+}
+
+static
+void i1480u_tx_unlink_urbs(struct i1480u *i1480u)
+{
+        unsigned long flags;
+        struct i1480u_tx *wtx, *next;
+
+        spin_lock_irqsave(&i1480u->tx_list_lock, flags);
+        list_for_each_entry_safe(wtx, next, &i1480u->tx_list, list_node) {
+                usb_unlink_urb(wtx->urb);
+        }
+        spin_unlock_irqrestore(&i1480u->tx_list_lock, flags);
+}
+
+
+/**
+ * Callback for a completed tx USB URB.
+ *
+ * TODO:
+ *
+ * - FIXME: recover errors more gracefully
+ * - FIXME: handle NAKs (I dont think they come here) for flow ctl
+ */
+static
+void i1480u_tx_cb(struct urb *urb)
+{
+        struct i1480u_tx *wtx = urb->context;
+        struct i1480u *i1480u = wtx->i1480u;
+        struct net_device *net_dev = i1480u->net_dev;
+        struct device *dev = &i1480u->usb_iface->dev;
+        unsigned long flags;
+
+        switch (urb->status) {
+        case 0:
+                spin_lock_irqsave(&i1480u->lock, flags);
+                i1480u->stats.tx_packets++;
+                i1480u->stats.tx_bytes += urb->actual_length;
+                spin_unlock_irqrestore(&i1480u->lock, flags);
+                break;
+        case -ECONNRESET:       /* Not an error, but a controlled situation; */
+        case -ENOENT:           /* (we killed the URB)...so, no broadcast */
+                dev_dbg(dev, "notif endp: reset/noent %d\n", urb->status);
+                netif_stop_queue(net_dev);
+                break;
+        case -ESHUTDOWN:        /* going away! */
+                dev_dbg(dev, "notif endp: down %d\n", urb->status);
+                netif_stop_queue(net_dev);
+                break;
+        default:
+                dev_err(dev, "TX: unknown URB status %d\n", urb->status);
+                if (edc_inc(&i1480u->tx_errors, EDC_MAX_ERRORS,
+                                        EDC_ERROR_TIMEFRAME)) {
+                        dev_err(dev, "TX: max acceptable errors exceeded."
+                                        "Reset device.\n");
+                        netif_stop_queue(net_dev);
+                        i1480u_tx_unlink_urbs(i1480u);
+                        wlp_reset_all(&i1480u->wlp);
+                }
+                break;
+        }
+        i1480u_tx_destroy(i1480u, wtx);
+        if (atomic_dec_return(&i1480u->tx_inflight.count)
+            <= i1480u->tx_inflight.threshold
+            && netif_queue_stopped(net_dev)
+            && i1480u->tx_inflight.threshold != 0) {
+                if (d_test(2) && printk_ratelimit())
+                        d_printf(2, dev, "Restart queue. \n");
+                netif_start_queue(net_dev);
+                atomic_inc(&i1480u->tx_inflight.restart_count);
+        }
+        return;
+}
+
+
+/**
+ * Given a buffer that doesn't fit in a single fragment, create an
+ * scatter/gather structure for delivery to the USB pipe.
+ *
+ * Implements functionality of i1480u_tx_create().
+ *
+ * @wtx:        tx descriptor
+ * @skb:        skb to send
+ * @gfp_mask:   gfp allocation mask
+ * @returns:    Pointer to @wtx if ok, NULL on error.
+ *
+ * Sorry, TOO LONG a function, but breaking it up is kind of hard
+ *
+ * This will break the buffer in chunks smaller than
+ * i1480u_MAX_FRG_SIZE (including the header) and add proper headers
+ * to each:
+ *
+ *   1st header           \
+ *   i1480 tx header      |  fragment 1
+ *   fragment data        /
+ *   nxt header           \  fragment 2
+ *   fragment data        /
+ *   ..
+ *   ..
+ *   last header          \  fragment 3
+ *   last fragment data   /
+ *
+ * This does not fill the i1480 TX header, it is left up to the
+ * caller to do that; you can get it from @wtx->wlp_tx_hdr.
+ *
+ * This function consumes the skb unless there is an error.
+ */
+static
+int i1480u_tx_create_n(struct i1480u_tx *wtx, struct sk_buff *skb,
+                       gfp_t gfp_mask)
+{
+        int result;
+        void *pl;
+        size_t pl_size;
+
+        void *pl_itr, *buf_itr;
+        size_t pl_size_left, frgs, pl_size_1st, frg_pl_size = 0;
+        struct untd_hdr_1st *untd_hdr_1st;
+        struct wlp_tx_hdr *wlp_tx_hdr;
+        struct untd_hdr_rst *untd_hdr_rst;
+
+        wtx->skb = NULL;
+        pl = skb->data;
+        pl_itr = pl;
+        pl_size = skb->len;
+        pl_size_left = pl_size; /* payload size */
+        /* First fragment; fits as much as i1480u_MAX_FRG_SIZE minus
+         * the headers */
+        pl_size_1st = i1480u_MAX_FRG_SIZE
+                - sizeof(struct untd_hdr_1st) - sizeof(struct wlp_tx_hdr);
+        BUG_ON(pl_size_1st > pl_size);
+        pl_size_left -= pl_size_1st;
+        /* The rest have an smaller header (no i1480 TX header). We
+         * need to break up the payload in blocks smaller than
+         * i1480u_MAX_PL_SIZE (payload excluding header). */
+        frgs = (pl_size_left + i1480u_MAX_PL_SIZE - 1) / i1480u_MAX_PL_SIZE;
+        /* Allocate space for the new buffer. In this new buffer we'll
+         * place the headers followed by the data fragment, headers,
+         * data fragments, etc..
+         */
+        result = -ENOMEM;
+        wtx->buf_size = sizeof(*untd_hdr_1st)
+                + sizeof(*wlp_tx_hdr)
+                + frgs * sizeof(*untd_hdr_rst)
+                + pl_size;
+        wtx->buf = kmalloc(wtx->buf_size, gfp_mask);
+        if (wtx->buf == NULL)
+                goto error_buf_alloc;
+
+        buf_itr = wtx->buf;             /* We got the space, let's fill it up */
+        /* Fill 1st fragment */
+        untd_hdr_1st = buf_itr;
+        buf_itr += sizeof(*untd_hdr_1st);
+        untd_hdr_set_type(&untd_hdr_1st->hdr, i1480u_PKT_FRAG_1ST);
+        untd_hdr_set_rx_tx(&untd_hdr_1st->hdr, 0);
+        untd_hdr_1st->hdr.len = cpu_to_le16(pl_size + sizeof(*wlp_tx_hdr));
+        untd_hdr_1st->fragment_len =
+                cpu_to_le16(pl_size_1st + sizeof(*wlp_tx_hdr));
+        memset(untd_hdr_1st->padding, 0, sizeof(untd_hdr_1st->padding));
+        /* Set up i1480 header info */
+        wlp_tx_hdr = wtx->wlp_tx_hdr = buf_itr;
+        buf_itr += sizeof(*wlp_tx_hdr);
+        /* Copy the first fragment */
+        memcpy(buf_itr, pl_itr, pl_size_1st);
+        pl_itr += pl_size_1st;
+        buf_itr += pl_size_1st;
+
+        /* Now do each remaining fragment */
+        result = -EINVAL;
+        while (pl_size_left > 0) {
+                d_printf(5, NULL, "ITR HDR: pl_size_left %zu buf_itr %zu\n",
+                         pl_size_left, buf_itr - wtx->buf);
+                if (buf_itr + sizeof(*untd_hdr_rst) - wtx->buf
+                    > wtx->buf_size) {
+                        printk(KERN_ERR "BUG: no space for header\n");
+                        goto error_bug;
+                }
+                d_printf(5, NULL, "ITR HDR 2: pl_size_left %zu buf_itr %zu\n",
+                         pl_size_left, buf_itr - wtx->buf);
+                untd_hdr_rst = buf_itr;
+                buf_itr += sizeof(*untd_hdr_rst);
+                if (pl_size_left > i1480u_MAX_PL_SIZE) {
+                        frg_pl_size = i1480u_MAX_PL_SIZE;
+                        untd_hdr_set_type(&untd_hdr_rst->hdr, i1480u_PKT_FRAG_NXT);
+                } else {
+                        frg_pl_size = pl_size_left;
+                        untd_hdr_set_type(&untd_hdr_rst->hdr, i1480u_PKT_FRAG_LST);
+                }
+                d_printf(5, NULL,
+                         "ITR PL: pl_size_left %zu buf_itr %zu frg_pl_size %zu\n",
+                         pl_size_left, buf_itr - wtx->buf, frg_pl_size);
+                untd_hdr_set_rx_tx(&untd_hdr_rst->hdr, 0);
+                untd_hdr_rst->hdr.len = cpu_to_le16(frg_pl_size);
+                untd_hdr_rst->padding = 0;
+                if (buf_itr + frg_pl_size - wtx->buf
+                    > wtx->buf_size) {
+                        printk(KERN_ERR "BUG: no space for payload\n");
+                        goto error_bug;
+                }
+                memcpy(buf_itr, pl_itr, frg_pl_size);
+                buf_itr += frg_pl_size;
+                pl_itr += frg_pl_size;
+                pl_size_left -= frg_pl_size;
+                d_printf(5, NULL,
+                         "ITR PL 2: pl_size_left %zu buf_itr %zu frg_pl_size %zu\n",
+                         pl_size_left, buf_itr - wtx->buf, frg_pl_size);
+        }
+        dev_kfree_skb_irq(skb);
+        return 0;
+
+error_bug:
+        printk(KERN_ERR
+               "BUG: skb %u bytes\n"
+               "BUG: frg_pl_size %zd i1480u_MAX_FRG_SIZE %u\n"
+               "BUG: buf_itr %zu buf_size %zu pl_size_left %zu\n",
+               skb->len,
+               frg_pl_size, i1480u_MAX_FRG_SIZE,
+               buf_itr - wtx->buf, wtx->buf_size, pl_size_left);
+
+        kfree(wtx->buf);
+error_buf_alloc:
+        return result;
+}
+
+
+/**
+ * Given a buffer that fits in a single fragment, fill out a @wtx
+ * struct for transmitting it down the USB pipe.
+ *
+ * Uses the fact that we have space reserved in front of the skbuff
+ * for hardware headers :]
+ *
+ * This does not fill the i1480 TX header, it is left up to the
+ * caller to do that; you can get it from @wtx->wlp_tx_hdr.
+ *
+ * @pl:         pointer to payload data
+ * @pl_size:    size of the payuload
+ *
+ * This function does not consume the @skb.
+ */
+static
+int i1480u_tx_create_1(struct i1480u_tx *wtx, struct sk_buff *skb,
+                       gfp_t gfp_mask)
+{
+        struct untd_hdr_cmp *untd_hdr_cmp;
+        struct wlp_tx_hdr *wlp_tx_hdr;
+
+        wtx->buf = NULL;
+        wtx->skb = skb;
+        BUG_ON(skb_headroom(skb) < sizeof(*wlp_tx_hdr));
+        wlp_tx_hdr = (void *) __skb_push(skb, sizeof(*wlp_tx_hdr));
+        wtx->wlp_tx_hdr = wlp_tx_hdr;
+        BUG_ON(skb_headroom(skb) < sizeof(*untd_hdr_cmp));
+        untd_hdr_cmp = (void *) __skb_push(skb, sizeof(*untd_hdr_cmp));
+
+        untd_hdr_set_type(&untd_hdr_cmp->hdr, i1480u_PKT_FRAG_CMP);
+        untd_hdr_set_rx_tx(&untd_hdr_cmp->hdr, 0);
+        untd_hdr_cmp->hdr.len = cpu_to_le16(skb->len - sizeof(*untd_hdr_cmp));
+        untd_hdr_cmp->padding = 0;
+        return 0;
+}
+
+
+/**
+ * Given a skb to transmit, massage it to become palatable for the TX pipe
+ *
+ * This will break the buffer in chunks smaller than
+ * i1480u_MAX_FRG_SIZE and add proper headers to each.
+ *
+ *   1st header           \
+ *   i1480 tx header      |  fragment 1
+ *   fragment data        /
+ *   nxt header           \  fragment 2
+ *   fragment data        /
+ *   ..
+ *   ..
+ *   last header          \  fragment 3
+ *   last fragment data   /
+ *
+ * Each fragment will be always smaller or equal to i1480u_MAX_FRG_SIZE.
+ *
+ * If the first fragment is smaller than i1480u_MAX_FRG_SIZE, then the
+ * following is composed:
+ *
+ *   complete header      \
+ *   i1480 tx header      | single fragment
+ *   packet data          /
+ *
+ * We were going to use s/g support, but because the interface is
+ * synch and at the end there is plenty of overhead to do it, it
+ * didn't seem that worth for data that is going to be smaller than
+ * one page.
+ */
+static
+struct i1480u_tx *i1480u_tx_create(struct i1480u *i1480u,
+                                   struct sk_buff *skb, gfp_t gfp_mask)
+{
+        int result;
+        struct usb_endpoint_descriptor *epd;
+        int usb_pipe;
+        unsigned long flags;
+
+        struct i1480u_tx *wtx;
+        const size_t pl_max_size =
+                i1480u_MAX_FRG_SIZE - sizeof(struct untd_hdr_cmp)
+                - sizeof(struct wlp_tx_hdr);
+
+        wtx = kmalloc(sizeof(*wtx), gfp_mask);
+        if (wtx == NULL)
+                goto error_wtx_alloc;
+        wtx->urb = usb_alloc_urb(0, gfp_mask);
+        if (wtx->urb == NULL)
+                goto error_urb_alloc;
+        epd = &i1480u->usb_iface->cur_altsetting->endpoint[2].desc;
+        usb_pipe = usb_sndbulkpipe(i1480u->usb_dev, epd->bEndpointAddress);
+        /* Fits in a single complete packet or need to split? */
+        if (skb->len > pl_max_size) {
+                result = i1480u_tx_create_n(wtx, skb, gfp_mask);
+                if (result < 0)
+                        goto error_create;
+                usb_fill_bulk_urb(wtx->urb, i1480u->usb_dev, usb_pipe,
+                                  wtx->buf, wtx->buf_size, i1480u_tx_cb, wtx);
+        } else {
+                result = i1480u_tx_create_1(wtx, skb, gfp_mask);
+                if (result < 0)
+                        goto error_create;
+                usb_fill_bulk_urb(wtx->urb, i1480u->usb_dev, usb_pipe,
+                                  skb->data, skb->len, i1480u_tx_cb, wtx);
+        }
+        spin_lock_irqsave(&i1480u->tx_list_lock, flags);
+        list_add(&wtx->list_node, &i1480u->tx_list);
+        spin_unlock_irqrestore(&i1480u->tx_list_lock, flags);
+        return wtx;
+
+error_create:
+        kfree(wtx->urb);
+error_urb_alloc:
+        kfree(wtx);
+error_wtx_alloc:
+        return NULL;
+}
+
+/**
+ * Actual fragmentation and transmission of frame
+ *
+ * @wlp:  WLP substack data structure
+ * @skb:  To be transmitted
+ * @dst:  Device address of destination
+ * @returns: 0 on success, <0 on failure
+ *
+ * This function can also be called directly (not just from
+ * hard_start_xmit), so we also check here if the interface is up before
+ * taking sending anything.
+ */
+int i1480u_xmit_frame(struct wlp *wlp, struct sk_buff *skb,
+                      struct uwb_dev_addr *dst)
+{
+        int result = -ENXIO;
+        struct i1480u *i1480u = container_of(wlp, struct i1480u, wlp);
+        struct device *dev = &i1480u->usb_iface->dev;
+        struct net_device *net_dev = i1480u->net_dev;
+        struct i1480u_tx *wtx;
+        struct wlp_tx_hdr *wlp_tx_hdr;
+        static unsigned char dev_bcast[2] = { 0xff, 0xff };
+#if 0
+        int lockup = 50;
+#endif
+
+        d_fnstart(6, dev, "(skb %p (%u), net_dev %p)\n", skb, skb->len,
+                  net_dev);
+        BUG_ON(i1480u->wlp.rc == NULL);
+        if ((net_dev->flags & IFF_UP) == 0)
+                goto out;
+        result = -EBUSY;
+        if (atomic_read(&i1480u->tx_inflight.count) >= i1480u->tx_inflight.max) {
+                if (d_test(2) && printk_ratelimit())
+                        d_printf(2, dev, "Max frames in flight "
+                                 "stopping queue.\n");
+                netif_stop_queue(net_dev);
+                goto error_max_inflight;
+        }
+        result = -ENOMEM;
+        wtx = i1480u_tx_create(i1480u, skb, GFP_ATOMIC);
+        if (unlikely(wtx == NULL)) {
+                if (printk_ratelimit())
+                        dev_err(dev, "TX: no memory for WLP TX URB,"
+                                "dropping packet (in flight %d)\n",
+                                atomic_read(&i1480u->tx_inflight.count));
+                netif_stop_queue(net_dev);
+                goto error_wtx_alloc;
+        }
+        wtx->i1480u = i1480u;
+        /* Fill out the i1480 header; @i1480u->def_tx_hdr read without
+         * locking. We do so because they are kind of orthogonal to
+         * each other (and thus not changed in an atomic batch).
+         * The ETH header is right after the WLP TX header. */
+        wlp_tx_hdr = wtx->wlp_tx_hdr;
+        *wlp_tx_hdr = i1480u->options.def_tx_hdr;
+        wlp_tx_hdr->dstaddr = *dst;
+        if (!memcmp(&wlp_tx_hdr->dstaddr, dev_bcast, sizeof(dev_bcast))
+            && (wlp_tx_hdr_delivery_id_type(wlp_tx_hdr) & WLP_DRP)) {
+                /*Broadcast message directed to DRP host. Send as best effort
+                 * on PCA. */
+                wlp_tx_hdr_set_delivery_id_type(wlp_tx_hdr, i1480u->options.pca_base_priority);
+        }
+
+#if 0
+        dev_info(dev, "TX delivering skb -> USB, %zu bytes\n", skb->len);
+        dump_bytes(dev, skb->data, skb->len > 72 ? 72 : skb->len);
+#endif
+#if 0
+        /* simulates a device lockup after every lockup# packets */
+        if (lockup && ((i1480u->stats.tx_packets + 1) % lockup) == 0) {
+                /* Simulate a dropped transmit interrupt */
+                net_dev->trans_start = jiffies;
+                netif_stop_queue(net_dev);
+                dev_err(dev, "Simulate lockup at %ld\n", jiffies);
+                return result;
+        }
+#endif
+
+        result = usb_submit_urb(wtx->urb, GFP_ATOMIC);          /* Go baby */
+        if (result < 0) {
+                dev_err(dev, "TX: cannot submit URB: %d\n", result);
+                /* We leave the freeing of skb to calling function */
+                wtx->skb = NULL;
+                goto error_tx_urb_submit;
+        }
+        atomic_inc(&i1480u->tx_inflight.count);
+        net_dev->trans_start = jiffies;
+        d_fnend(6, dev, "(skb %p (%u), net_dev %p) = %d\n", skb, skb->len,
+                net_dev, result);
+        return result;
+
+error_tx_urb_submit:
+        i1480u_tx_destroy(i1480u, wtx);
+error_wtx_alloc:
+error_max_inflight:
+out:
+        d_fnend(6, dev, "(skb %p (%u), net_dev %p) = %d\n", skb, skb->len,
+                net_dev, result);
+        return result;
+}
+
+
+/**
+ * Transmit an skb  Called when an skbuf has to be transmitted
+ *
+ * The skb is first passed to WLP substack to ensure this is a valid
+ * frame. If valid the device address of destination will be filled and
+ * the WLP header prepended to the skb. If this step fails we fake sending
+ * the frame, if we return an error the network stack will just keep trying.
+ *
+ * Broadcast frames inside a WSS needs to be treated special as multicast is
+ * not supported. A broadcast frame is sent as unicast to each member of the
+ * WSS - this is done by the WLP substack when it finds a broadcast frame.
+ * So, we test if the WLP substack took over the skb and only transmit it
+ * if it has not (been taken over).
+ *
+ * @net_dev->xmit_lock is held
+ */
+int i1480u_hard_start_xmit(struct sk_buff *skb, struct net_device *net_dev)
+{
+        int result;
+        struct i1480u *i1480u = netdev_priv(net_dev);
+        struct device *dev = &i1480u->usb_iface->dev;
+        struct uwb_dev_addr dst;
+
+        d_fnstart(6, dev, "(skb %p (%u), net_dev %p)\n", skb, skb->len,
+                  net_dev);
+        BUG_ON(i1480u->wlp.rc == NULL);
+        if ((net_dev->flags & IFF_UP) == 0)
+                goto error;
+        result = wlp_prepare_tx_frame(dev, &i1480u->wlp, skb, &dst);
+        if (result < 0) {
+                dev_err(dev, "WLP verification of TX frame failed (%d). "
+                        "Dropping packet.\n", result);
+                goto error;
+        } else if (result == 1) {
+                d_printf(6, dev, "WLP will transmit frame. \n");
+                /* trans_start time will be set when WLP actually transmits
+                 * the frame */
+                goto out;
+        }
+        d_printf(6, dev, "Transmitting frame. \n");
+        result = i1480u_xmit_frame(&i1480u->wlp, skb, &dst);
+        if (result < 0) {
+                dev_err(dev, "Frame TX failed (%d).\n", result);
+                goto error;
+        }
+        d_fnend(6, dev, "(skb %p (%u), net_dev %p) = %d\n", skb, skb->len,
+                net_dev, result);
+        return NETDEV_TX_OK;
+error:
+        dev_kfree_skb_any(skb);
+        i1480u->stats.tx_dropped++;
+out:
+        d_fnend(6, dev, "(skb %p (%u), net_dev %p) = %d\n", skb, skb->len,
+                net_dev, result);
+        return NETDEV_TX_OK;
+}
+
+
+/**
+ * Called when a pkt transmission doesn't complete in a reasonable period
+ * Device reset may sleep - do it outside of interrupt context (delayed)
+ */
+void i1480u_tx_timeout(struct net_device *net_dev)
+{
+        struct i1480u *i1480u = netdev_priv(net_dev);
+
+        wlp_reset_all(&i1480u->wlp);
+}
+
+
+void i1480u_tx_release(struct i1480u *i1480u)
+{
+        unsigned long flags;
+        struct i1480u_tx *wtx, *next;
+        int count = 0, empty;
+
+        spin_lock_irqsave(&i1480u->tx_list_lock, flags);
+        list_for_each_entry_safe(wtx, next, &i1480u->tx_list, list_node) {
+                count++;
+                usb_unlink_urb(wtx->urb);
+        }
+        spin_unlock_irqrestore(&i1480u->tx_list_lock, flags);
+        count = count*10; /* i1480ut 200ms per unlinked urb (intervals of 20ms) */
+        /*
+         * We don't like this sollution too much (dirty as it is), but
+         * it is cheaper than putting a refcount on each i1480u_tx and
+         * i1480uting for all of them to go away...
+         *
+         * Called when no more packets can be added to tx_list
+         * so can i1480ut for it to be empty.
+         */
+        while (1) {
+                spin_lock_irqsave(&i1480u->tx_list_lock, flags);
+                empty = list_empty(&i1480u->tx_list);
+                spin_unlock_irqrestore(&i1480u->tx_list_lock, flags);
+                if (empty)
+                        break;
+                count--;
+                BUG_ON(count == 0);
+                msleep(20);
+        }
+}
diff --git a/drivers/uwb/ie.c b/drivers/uwb/ie.c
new file mode 100644
index 000000000000..cf6f3d152b9d
--- /dev/null
+++ b/drivers/uwb/ie.c
@@ -0,0 +1,541 @@
+/*
+ * Ultra Wide Band
+ * Information Element Handling
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ * Reinette Chatre <reinette.chatre@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ */
+
+#include "uwb-internal.h"
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+/**
+ * uwb_ie_next - get the next IE in a buffer
+ * @ptr: start of the buffer containing the IE data
+ * @len: length of the buffer
+ *
+ * Both @ptr and @len are updated so subsequent calls to uwb_ie_next()
+ * will get the next IE.
+ *
+ * NULL is returned (and @ptr and @len will not be updated) if there
+ * are no more IEs in the buffer or the buffer is too short.
+ */
+struct uwb_ie_hdr *uwb_ie_next(void **ptr, size_t *len)
+{
+        struct uwb_ie_hdr *hdr;
+        size_t ie_len;
+
+        if (*len < sizeof(struct uwb_ie_hdr))
+                return NULL;
+
+        hdr = *ptr;
+        ie_len = sizeof(struct uwb_ie_hdr) + hdr->length;
+
+        if (*len < ie_len)
+                return NULL;
+
+        *ptr += ie_len;
+        *len -= ie_len;
+
+        return hdr;
+}
+EXPORT_SYMBOL_GPL(uwb_ie_next);
+
+/**
+ * Get the IEs that a radio controller is sending in its beacon
+ *
+ * @uwb_rc:  UWB Radio Controller
+ * @returns: Size read from the system
+ *
+ * We don't need to lock the uwb_rc's mutex because we don't modify
+ * anything. Once done with the iedata buffer, call
+ * uwb_rc_ie_release(iedata). Don't call kfree on it.
+ */
+ssize_t uwb_rc_get_ie(struct uwb_rc *uwb_rc, struct uwb_rc_evt_get_ie **pget_ie)
+{
+        ssize_t result;
+        struct device *dev = &uwb_rc->uwb_dev.dev;
+        struct uwb_rccb *cmd = NULL;
+        struct uwb_rceb *reply = NULL;
+        struct uwb_rc_evt_get_ie *get_ie;
+
+        d_fnstart(3, dev, "(%p, %p)\n", uwb_rc, pget_ie);
+        result = -ENOMEM;
+        cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+        if (cmd == NULL)
+                goto error_kzalloc;
+        cmd->bCommandType = UWB_RC_CET_GENERAL;
+        cmd->wCommand = cpu_to_le16(UWB_RC_CMD_GET_IE);
+        result = uwb_rc_vcmd(uwb_rc, "GET_IE", cmd, sizeof(*cmd),
+                             UWB_RC_CET_GENERAL, UWB_RC_CMD_GET_IE,
+                             &reply);
+        if (result < 0)
+                goto error_cmd;
+        get_ie = container_of(reply, struct uwb_rc_evt_get_ie, rceb);
+        if (result < sizeof(*get_ie)) {
+                dev_err(dev, "not enough data returned for decoding GET IE "
+                        "(%zu bytes received vs %zu needed)\n",
+                        result, sizeof(*get_ie));
+                result = -EINVAL;
+        } else if (result < sizeof(*get_ie) + le16_to_cpu(get_ie->wIELength)) {
+                dev_err(dev, "not enough data returned for decoding GET IE "
+                        "payload (%zu bytes received vs %zu needed)\n", result,
+                        sizeof(*get_ie) + le16_to_cpu(get_ie->wIELength));
+                result = -EINVAL;
+        } else
+                *pget_ie = get_ie;
+error_cmd:
+        kfree(cmd);
+error_kzalloc:
+        d_fnend(3, dev, "(%p, %p) = %d\n", uwb_rc, pget_ie, (int)result);
+        return result;
+}
+EXPORT_SYMBOL_GPL(uwb_rc_get_ie);
+
+
+/*
+ * Given a pointer to an IE, print it in ASCII/hex followed by a new line
+ *
+ * @ie_hdr: pointer to the IE header. Length is in there, and it is
+ *          guaranteed that the ie_hdr->length bytes following it are
+ *          safely accesible.
+ *
+ * @_data: context data passed from uwb_ie_for_each(), an struct output_ctx
+ */
+int uwb_ie_dump_hex(struct uwb_dev *uwb_dev, const struct uwb_ie_hdr *ie_hdr,
+                    size_t offset, void *_ctx)
+{
+        struct uwb_buf_ctx *ctx = _ctx;
+        const u8 *pl = (void *)(ie_hdr + 1);
+        u8 pl_itr;
+
+        ctx->bytes += scnprintf(ctx->buf + ctx->bytes, ctx->size - ctx->bytes,
+                                "%02x %02x ", (unsigned) ie_hdr->element_id,
+                                (unsigned) ie_hdr->length);
+        pl_itr = 0;
+        while (pl_itr < ie_hdr->length && ctx->bytes < ctx->size)
+                ctx->bytes += scnprintf(ctx->buf + ctx->bytes,
+                                        ctx->size - ctx->bytes,
+                                        "%02x ", (unsigned) pl[pl_itr++]);
+        if (ctx->bytes < ctx->size)
+                ctx->buf[ctx->bytes++] = '\n';
+        return 0;
+}
+EXPORT_SYMBOL_GPL(uwb_ie_dump_hex);
+
+
+/**
+ * Verify that a pointer in a buffer points to valid IE
+ *
+ * @start: pointer to start of buffer in which IE appears
+ * @itr:   pointer to IE inside buffer that will be verified
+ * @top:   pointer to end of buffer
+ *
+ * @returns: 0 if IE is valid, <0 otherwise
+ *
+ * Verification involves checking that the buffer can contain a
+ * header and the amount of data reported in the IE header can be found in
+ * the buffer.
+ */
+static
+int uwb_rc_ie_verify(struct uwb_dev *uwb_dev, const void *start,
+                     const void *itr, const void *top)
+{
+        struct device *dev = &uwb_dev->dev;
+        const struct uwb_ie_hdr *ie_hdr;
+
+        if (top - itr < sizeof(*ie_hdr)) {
+                dev_err(dev, "Bad IE: no data to decode header "
+                        "(%zu bytes left vs %zu needed) at offset %zu\n",
+                        top - itr, sizeof(*ie_hdr), itr - start);
+                return -EINVAL;
+        }
+        ie_hdr = itr;
+        itr += sizeof(*ie_hdr);
+        if (top - itr < ie_hdr->length) {
+                dev_err(dev, "Bad IE: not enough data for payload "
+                        "(%zu bytes left vs %zu needed) at offset %zu\n",
+                        top - itr, (size_t)ie_hdr->length,
+                        (void *)ie_hdr - start);
+                return -EINVAL;
+        }
+        return 0;
+}
+
+
+/**
+ * Walk a buffer filled with consecutive IE's a buffer
+ *
+ * @uwb_dev: UWB device this IEs belong to (for err messages mainly)
+ *
+ * @fn: function to call with each IE; if it returns 0, we keep
+ *      traversing the buffer. If it returns !0, we'll stop and return
+ *      that value.
+ *
+ * @data: pointer passed to @fn
+ *
+ * @buf: buffer where the consecutive IEs are located
+ *
+ * @size: size of @buf
+ *
+ * Each IE is checked for basic correctness (there is space left for
+ * the header and the payload). If that test is failed, we stop
+ * processing. For every good IE, @fn is called.
+ */
+ssize_t uwb_ie_for_each(struct uwb_dev *uwb_dev, uwb_ie_f fn, void *data,
+                        const void *buf, size_t size)
+{
+        ssize_t result = 0;
+        const struct uwb_ie_hdr *ie_hdr;
+        const void *itr = buf, *top = itr + size;
+
+        while (itr < top) {
+                if (uwb_rc_ie_verify(uwb_dev, buf, itr, top) != 0)
+                        break;
+                ie_hdr = itr;
+                itr += sizeof(*ie_hdr) + ie_hdr->length;
+                result = fn(uwb_dev, ie_hdr, itr - buf, data);
+                if (result != 0)
+                        break;
+        }
+        return result;
+}
+EXPORT_SYMBOL_GPL(uwb_ie_for_each);
+
+
+/**
+ * Replace all IEs currently being transmitted by a device
+ *
+ * @cmd:    pointer to the SET-IE command with the IEs to set
+ * @size:   size of @buf
+ */
+int uwb_rc_set_ie(struct uwb_rc *rc, struct uwb_rc_cmd_set_ie *cmd)
+{
+        int result;
+        struct device *dev = &rc->uwb_dev.dev;
+        struct uwb_rc_evt_set_ie reply;
+
+        reply.rceb.bEventType = UWB_RC_CET_GENERAL;
+        reply.rceb.wEvent = UWB_RC_CMD_SET_IE;
+        result = uwb_rc_cmd(rc, "SET-IE", &cmd->rccb,
+                            sizeof(*cmd) + le16_to_cpu(cmd->wIELength),
+                            &reply.rceb, sizeof(reply));
+        if (result < 0)
+                goto error_cmd;
+        else if (result != sizeof(reply)) {
+                dev_err(dev, "SET-IE: not enough data to decode reply "
+                        "(%d bytes received vs %zu needed)\n",
+                        result, sizeof(reply));
+                result = -EIO;
+        } else if (reply.bResultCode != UWB_RC_RES_SUCCESS) {
+                dev_err(dev, "SET-IE: command execution failed: %s (%d)\n",
+                        uwb_rc_strerror(reply.bResultCode), reply.bResultCode);
+                result = -EIO;
+        } else
+                result = 0;
+error_cmd:
+        return result;
+}
+
+/**
+ * Determine by IE id if IE is host settable
+ * WUSB 1.0 [8.6.2.8 Table 8.85]
+ *
+ * EXCEPTION:
+ * All but UWB_IE_WLP appears in Table 8.85 from WUSB 1.0. Setting this IE
+ * is required for the WLP substack to perform association with its WSS so
+ * we hope that the WUSB spec will be changed to reflect this.
+ */
+static
+int uwb_rc_ie_is_host_settable(enum uwb_ie element_id)
+{
+        if (element_id == UWB_PCA_AVAILABILITY ||
+            element_id == UWB_BP_SWITCH_IE ||
+            element_id == UWB_MAC_CAPABILITIES_IE ||
+            element_id == UWB_PHY_CAPABILITIES_IE ||
+            element_id == UWB_APP_SPEC_PROBE_IE ||
+            element_id == UWB_IDENTIFICATION_IE ||
+            element_id == UWB_MASTER_KEY_ID_IE ||
+            element_id == UWB_IE_WLP ||
+            element_id == UWB_APP_SPEC_IE)
+                return 1;
+        return 0;
+}
+
+
+/**
+ * Extract Host Settable IEs from IE
+ *
+ * @ie_data: pointer to buffer containing all IEs
+ * @size:    size of buffer
+ *
+ * @returns: length of buffer that only includes host settable IEs
+ *
+ * Given a buffer of IEs we move all Host Settable IEs to front of buffer
+ * by overwriting the IEs that are not Host Settable.
+ * Buffer length is adjusted accordingly.
+ */
+static
+ssize_t uwb_rc_parse_host_settable_ie(struct uwb_dev *uwb_dev,
+                                      void *ie_data, size_t size)
+{
+        size_t new_len = size;
+        struct uwb_ie_hdr *ie_hdr;
+        size_t ie_length;
+        void *itr = ie_data, *top = itr + size;
+
+        while (itr < top) {
+                if (uwb_rc_ie_verify(uwb_dev, ie_data, itr, top) != 0)
+                        break;
+                ie_hdr = itr;
+                ie_length = sizeof(*ie_hdr) + ie_hdr->length;
+                if (uwb_rc_ie_is_host_settable(ie_hdr->element_id)) {
+                        itr += ie_length;
+                } else {
+                        memmove(itr, itr + ie_length, top - (itr + ie_length));
+                        new_len -= ie_length;
+                        top -= ie_length;
+                }
+        }
+        return new_len;
+}
+
+
+/* Cleanup the whole IE management subsystem */
+void uwb_rc_ie_init(struct uwb_rc *uwb_rc)
+{
+        mutex_init(&uwb_rc->ies_mutex);
+}
+
+
+/**
+ * Set up cache for host settable IEs currently being transmitted
+ *
+ * First we just call GET-IE to get the current IEs being transmitted
+ * (or we workaround and pretend we did) and (because the format is
+ * the same) reuse that as the IE cache (with the command prefix, as
+ * explained in 'struct uwb_rc').
+ *
+ * @returns: size of cache created
+ */
+ssize_t uwb_rc_ie_setup(struct uwb_rc *uwb_rc)
+{
+        struct device *dev = &uwb_rc->uwb_dev.dev;
+        ssize_t result;
+        size_t capacity;
+        struct uwb_rc_evt_get_ie *ie_info;
+
+        d_fnstart(3, dev, "(%p)\n", uwb_rc);
+        mutex_lock(&uwb_rc->ies_mutex);
+        result = uwb_rc_get_ie(uwb_rc, &ie_info);
+        if (result < 0)
+                goto error_get_ie;
+        capacity = result;
+        d_printf(5, dev, "Got IEs %zu bytes (%zu long at %p)\n", result,
+                 (size_t)le16_to_cpu(ie_info->wIELength), ie_info);
+
+        /* Remove IEs that host should not set. */
+        result = uwb_rc_parse_host_settable_ie(&uwb_rc->uwb_dev,
+                        ie_info->IEData, le16_to_cpu(ie_info->wIELength));
+        if (result < 0)
+                goto error_parse;
+        d_printf(5, dev, "purged non-settable IEs to %zu bytes\n", result);
+        uwb_rc->ies = (void *) ie_info;
+        uwb_rc->ies->rccb.bCommandType = UWB_RC_CET_GENERAL;
+        uwb_rc->ies->rccb.wCommand = cpu_to_le16(UWB_RC_CMD_SET_IE);
+        uwb_rc->ies_capacity = capacity;
+        d_printf(5, dev, "IE cache at %p %zu bytes, %zu capacity\n",
+                 ie_info, result, capacity);
+        result = 0;
+error_parse:
+error_get_ie:
+        mutex_unlock(&uwb_rc->ies_mutex);
+        d_fnend(3, dev, "(%p) = %zu\n", uwb_rc, result);
+        return result;
+}
+
+
+/* Cleanup the whole IE management subsystem */
+void uwb_rc_ie_release(struct uwb_rc *uwb_rc)
+{
+        kfree(uwb_rc->ies);
+        uwb_rc->ies = NULL;
+        uwb_rc->ies_capacity = 0;
+}
+
+
+static
+int __acc_size(struct uwb_dev *uwb_dev, const struct uwb_ie_hdr *ie_hdr,
+               size_t offset, void *_ctx)
+{
+        size_t *acc_size = _ctx;
+        *acc_size += sizeof(*ie_hdr) + ie_hdr->length;
+        d_printf(6, &uwb_dev->dev, "new acc size %zu\n", *acc_size);
+        return 0;
+}
+
+
+/**
+ * Add a new IE to IEs currently being transmitted by device
+ *
+ * @ies: the buffer containing the new IE or IEs to be added to
+ *       the device's beacon. The buffer will be verified for
+ *       consistence (meaning the headers should be right) and
+ *       consistent with the buffer size.
+ * @size: size of @ies (in bytes, total buffer size)
+ * @returns: 0 if ok, <0 errno code on error
+ *
+ * According to WHCI 0.95 [4.13.6] the driver will only receive the RCEB
+ * after the device sent the first beacon that includes the IEs specified
+ * in the SET IE command. We thus cannot send this command if the device is
+ * not beaconing. Instead, a SET IE command will be sent later right after
+ * we start beaconing.
+ *
+ * Setting an IE on the device will overwrite all current IEs in device. So
+ * we take the current IEs being transmitted by the device, append the
+ * new one, and call SET IE with all the IEs needed.
+ *
+ * The local IE cache will only be updated with the new IE if SET IE
+ * completed successfully.
+ */
+int uwb_rc_ie_add(struct uwb_rc *uwb_rc,
+                  const struct uwb_ie_hdr *ies, size_t size)
+{
+        int result = 0;
+        struct device *dev = &uwb_rc->uwb_dev.dev;
+        struct uwb_rc_cmd_set_ie *new_ies;
+        size_t ies_size, total_size, acc_size = 0;
+
+        if (uwb_rc->ies == NULL)
+                return -ESHUTDOWN;
+        uwb_ie_for_each(&uwb_rc->uwb_dev, __acc_size, &acc_size, ies, size);
+        if (acc_size != size) {
+                dev_err(dev, "BUG: bad IEs, misconstructed headers "
+                        "[%zu bytes reported vs %zu calculated]\n",
+                        size, acc_size);
+                WARN_ON(1);
+                return -EINVAL;
+        }
+        mutex_lock(&uwb_rc->ies_mutex);
+        ies_size = le16_to_cpu(uwb_rc->ies->wIELength);
+        total_size = sizeof(*uwb_rc->ies) + ies_size;
+        if (total_size + size > uwb_rc->ies_capacity) {
+                d_printf(4, dev, "Reallocating IE cache from %p capacity %zu "
+                         "to capacity %zu\n", uwb_rc->ies, uwb_rc->ies_capacity,
+                         total_size + size);
+                new_ies = kzalloc(total_size + size, GFP_KERNEL);
+                if (new_ies == NULL) {
+                        dev_err(dev, "No memory for adding new IE\n");
+                        result = -ENOMEM;
+                        goto error_alloc;
+                }
+                memcpy(new_ies, uwb_rc->ies, total_size);
+                uwb_rc->ies_capacity = total_size + size;
+                kfree(uwb_rc->ies);
+                uwb_rc->ies = new_ies;
+                d_printf(4, dev, "New IE cache at %p capacity %zu\n",
+                         uwb_rc->ies, uwb_rc->ies_capacity);
+        }
+        memcpy((void *)uwb_rc->ies + total_size, ies, size);
+        uwb_rc->ies->wIELength = cpu_to_le16(ies_size + size);
+        if (uwb_rc->beaconing != -1) {
+                result = uwb_rc_set_ie(uwb_rc, uwb_rc->ies);
+                if (result < 0) {
+                        dev_err(dev, "Cannot set new IE on device: %d\n",
+                                result);
+                        uwb_rc->ies->wIELength = cpu_to_le16(ies_size);
+                } else
+                        result = 0;
+        }
+        d_printf(4, dev, "IEs now occupy %hu bytes of %zu capacity at %p\n",
+                 le16_to_cpu(uwb_rc->ies->wIELength), uwb_rc->ies_capacity,
+                 uwb_rc->ies);
+error_alloc:
+        mutex_unlock(&uwb_rc->ies_mutex);
+        return result;
+}
+EXPORT_SYMBOL_GPL(uwb_rc_ie_add);
+
+
+/*
+ * Remove an IE from internal cache
+ *
+ * We are dealing with our internal IE cache so no need to verify that the
+ * IEs are valid (it has been done already).
+ *
+ * Should be called with ies_mutex held
+ *
+ * We do not break out once an IE is found in the cache. It is currently
+ * possible to have more than one IE with the same ID included in the
+ * beacon. We don't reallocate, we just mark the size smaller.
+ */
+static
+int uwb_rc_ie_cache_rm(struct uwb_rc *uwb_rc, enum uwb_ie to_remove)
+{
+        struct uwb_ie_hdr *ie_hdr;
+        size_t new_len = le16_to_cpu(uwb_rc->ies->wIELength);
+        void *itr = uwb_rc->ies->IEData;
+        void *top = itr + new_len;
+
+        while (itr < top) {
+                ie_hdr = itr;
+                if (ie_hdr->element_id != to_remove) {
+                        itr += sizeof(*ie_hdr) + ie_hdr->length;
+                } else {
+                        int ie_length;
+                        ie_length = sizeof(*ie_hdr) + ie_hdr->length;
+                        if (top - itr != ie_length)
+                                memmove(itr, itr + ie_length, top - itr + ie_length);
+                        top -= ie_length;
+                        new_len -= ie_length;
+                }
+        }
+        uwb_rc->ies->wIELength = cpu_to_le16(new_len);
+        return 0;
+}
+
+
+/**
+ * Remove an IE currently being transmitted by device
+ *
+ * @element_id: id of IE to be removed from device's beacon
+ */
+int uwb_rc_ie_rm(struct uwb_rc *uwb_rc, enum uwb_ie element_id)
+{
+        struct device *dev = &uwb_rc->uwb_dev.dev;
+        int result;
+
+        if (uwb_rc->ies == NULL)
+                return -ESHUTDOWN;
+        mutex_lock(&uwb_rc->ies_mutex);
+        result = uwb_rc_ie_cache_rm(uwb_rc, element_id);
+        if (result < 0)
+                dev_err(dev, "Cannot remove IE from cache.\n");
+        if (uwb_rc->beaconing != -1) {
+                result = uwb_rc_set_ie(uwb_rc, uwb_rc->ies);
+                if (result < 0)
+                        dev_err(dev, "Cannot set new IE on device.\n");
+        }
+        mutex_unlock(&uwb_rc->ies_mutex);
+        return result;
+}
+EXPORT_SYMBOL_GPL(uwb_rc_ie_rm);
diff --git a/drivers/uwb/lc-dev.c b/drivers/uwb/lc-dev.c
new file mode 100644
index 000000000000..15f856c9689a
--- /dev/null
+++ b/drivers/uwb/lc-dev.c
@@ -0,0 +1,492 @@
+/*
+ * Ultra Wide Band
+ * Life cycle of devices
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ */
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/kdev_t.h>
+#include <linux/random.h>
+#include "uwb-internal.h"
+
+#define D_LOCAL 1
+#include <linux/uwb/debug.h>
+
+
+/* We initialize addresses to 0xff (invalid, as it is bcast) */
+static inline void uwb_dev_addr_init(struct uwb_dev_addr *addr)
+{
+        memset(&addr->data, 0xff, sizeof(addr->data));
+}
+
+static inline void uwb_mac_addr_init(struct uwb_mac_addr *addr)
+{
+        memset(&addr->data, 0xff, sizeof(addr->data));
+}
+
+/* @returns !0 if a device @addr is a broadcast address */
+static inline int uwb_dev_addr_bcast(const struct uwb_dev_addr *addr)
+{
+        static const struct uwb_dev_addr bcast = { .data = { 0xff, 0xff } };
+        return !uwb_dev_addr_cmp(addr, &bcast);
+}
+
+/*
+ * Add callback @new to be called when an event occurs in @rc.
+ */
+int uwb_notifs_register(struct uwb_rc *rc, struct uwb_notifs_handler *new)
+{
+        if (mutex_lock_interruptible(&rc->notifs_chain.mutex))
+                return -ERESTARTSYS;
+        list_add(&new->list_node, &rc->notifs_chain.list);
+        mutex_unlock(&rc->notifs_chain.mutex);
+        return 0;
+}
+EXPORT_SYMBOL_GPL(uwb_notifs_register);
+
+/*
+ * Remove event handler (callback)
+ */
+int uwb_notifs_deregister(struct uwb_rc *rc, struct uwb_notifs_handler *entry)
+{
+        if (mutex_lock_interruptible(&rc->notifs_chain.mutex))
+                return -ERESTARTSYS;
+        list_del(&entry->list_node);
+        mutex_unlock(&rc->notifs_chain.mutex);
+        return 0;
+}
+EXPORT_SYMBOL_GPL(uwb_notifs_deregister);
+
+/*
+ * Notify all event handlers of a given event on @rc
+ *
+ * We are called with a valid reference to the device, or NULL if the
+ * event is not for a particular event (e.g., a BG join event).
+ */
+void uwb_notify(struct uwb_rc *rc, struct uwb_dev *uwb_dev, enum uwb_notifs event)
+{
+        struct uwb_notifs_handler *handler;
+        if (mutex_lock_interruptible(&rc->notifs_chain.mutex))
+                return;
+        if (!list_empty(&rc->notifs_chain.list)) {
+                list_for_each_entry(handler, &rc->notifs_chain.list, list_node) {
+                        handler->cb(handler->data, uwb_dev, event);
+                }
+        }
+        mutex_unlock(&rc->notifs_chain.mutex);
+}
+
+/*
+ * Release the backing device of a uwb_dev that has been dynamically allocated.
+ */
+static void uwb_dev_sys_release(struct device *dev)
+{
+        struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+
+        d_fnstart(4, NULL, "(dev %p uwb_dev %p)\n", dev, uwb_dev);
+        uwb_bce_put(uwb_dev->bce);
+        d_printf(0, &uwb_dev->dev, "uwb_dev %p freed\n", uwb_dev);
+        memset(uwb_dev, 0x69, sizeof(*uwb_dev));
+        kfree(uwb_dev);
+        d_fnend(4, NULL, "(dev %p uwb_dev %p) = void\n", dev, uwb_dev);
+}
+
+/*
+ * Initialize a UWB device instance
+ *
+ * Alloc, zero and call this function.
+ */
+void uwb_dev_init(struct uwb_dev *uwb_dev)
+{
+        mutex_init(&uwb_dev->mutex);
+        device_initialize(&uwb_dev->dev);
+        uwb_dev->dev.release = uwb_dev_sys_release;
+        uwb_dev_addr_init(&uwb_dev->dev_addr);
+        uwb_mac_addr_init(&uwb_dev->mac_addr);
+        bitmap_fill(uwb_dev->streams, UWB_NUM_GLOBAL_STREAMS);
+}
+
+static ssize_t uwb_dev_EUI_48_show(struct device *dev,
+                                   struct device_attribute *attr, char *buf)
+{
+        struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+        char addr[UWB_ADDR_STRSIZE];
+
+        uwb_mac_addr_print(addr, sizeof(addr), &uwb_dev->mac_addr);
+        return sprintf(buf, "%s\n", addr);
+}
+static DEVICE_ATTR(EUI_48, S_IRUGO, uwb_dev_EUI_48_show, NULL);
+
+static ssize_t uwb_dev_DevAddr_show(struct device *dev,
+                                    struct device_attribute *attr, char *buf)
+{
+        struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+        char addr[UWB_ADDR_STRSIZE];
+
+        uwb_dev_addr_print(addr, sizeof(addr), &uwb_dev->dev_addr);
+        return sprintf(buf, "%s\n", addr);
+}
+static DEVICE_ATTR(DevAddr, S_IRUGO, uwb_dev_DevAddr_show, NULL);
+
+/*
+ * Show the BPST of this device.
+ *
+ * Calculated from the receive time of the device's beacon and it's
+ * slot number.
+ */
+static ssize_t uwb_dev_BPST_show(struct device *dev,
+                                 struct device_attribute *attr, char *buf)
+{
+        struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+        struct uwb_beca_e *bce;
+        struct uwb_beacon_frame *bf;
+        u16 bpst;
+
+        bce = uwb_dev->bce;
+        mutex_lock(&bce->mutex);
+        bf = (struct uwb_beacon_frame *)bce->be->BeaconInfo;
+        bpst = bce->be->wBPSTOffset
+                - (u16)(bf->Beacon_Slot_Number * UWB_BEACON_SLOT_LENGTH_US);
+        mutex_unlock(&bce->mutex);
+
+        return sprintf(buf, "%d\n", bpst);
+}
+static DEVICE_ATTR(BPST, S_IRUGO, uwb_dev_BPST_show, NULL);
+
+/*
+ * Show the IEs a device is beaconing
+ *
+ * We need to access the beacon cache, so we just lock it really
+ * quick, print the IEs and unlock.
+ *
+ * We have a reference on the cache entry, so that should be
+ * quite safe.
+ */
+static ssize_t uwb_dev_IEs_show(struct device *dev,
+                                struct device_attribute *attr, char *buf)
+{
+        struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+
+        return uwb_bce_print_IEs(uwb_dev, uwb_dev->bce, buf, PAGE_SIZE);
+}
+static DEVICE_ATTR(IEs, S_IRUGO | S_IWUSR, uwb_dev_IEs_show, NULL);
+
+static ssize_t uwb_dev_LQE_show(struct device *dev,
+                                struct device_attribute *attr, char *buf)
+{
+        struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+        struct uwb_beca_e *bce = uwb_dev->bce;
+        size_t result;
+
+        mutex_lock(&bce->mutex);
+        result = stats_show(&uwb_dev->bce->lqe_stats, buf);
+        mutex_unlock(&bce->mutex);
+        return result;
+}
+
+static ssize_t uwb_dev_LQE_store(struct device *dev,
+                                 struct device_attribute *attr,
+                                 const char *buf, size_t size)
+{
+        struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+        struct uwb_beca_e *bce = uwb_dev->bce;
+        ssize_t result;
+
+        mutex_lock(&bce->mutex);
+        result = stats_store(&uwb_dev->bce->lqe_stats, buf, size);
+        mutex_unlock(&bce->mutex);
+        return result;
+}
+static DEVICE_ATTR(LQE, S_IRUGO | S_IWUSR, uwb_dev_LQE_show, uwb_dev_LQE_store);
+
+static ssize_t uwb_dev_RSSI_show(struct device *dev,
+                                 struct device_attribute *attr, char *buf)
+{
+        struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+        struct uwb_beca_e *bce = uwb_dev->bce;
+        size_t result;
+
+        mutex_lock(&bce->mutex);
+        result = stats_show(&uwb_dev->bce->rssi_stats, buf);
+        mutex_unlock(&bce->mutex);
+        return result;
+}
+
+static ssize_t uwb_dev_RSSI_store(struct device *dev,
+                                  struct device_attribute *attr,
+                                  const char *buf, size_t size)
+{
+        struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+        struct uwb_beca_e *bce = uwb_dev->bce;
+        ssize_t result;
+
+        mutex_lock(&bce->mutex);
+        result = stats_store(&uwb_dev->bce->rssi_stats, buf, size);
+        mutex_unlock(&bce->mutex);
+        return result;
+}
+static DEVICE_ATTR(RSSI, S_IRUGO | S_IWUSR, uwb_dev_RSSI_show, uwb_dev_RSSI_store);
+
+
+static struct attribute *dev_attrs[] = {
+        &dev_attr_EUI_48.attr,
+        &dev_attr_DevAddr.attr,
+        &dev_attr_BPST.attr,
+        &dev_attr_IEs.attr,
+        &dev_attr_LQE.attr,
+        &dev_attr_RSSI.attr,
+        NULL,
+};
+
+static struct attribute_group dev_attr_group = {
+        .attrs = dev_attrs,
+};
+
+static struct attribute_group *groups[] = {
+        &dev_attr_group,
+        NULL,
+};
+
+/**
+ * Device SYSFS registration
+ *
+ *
+ */
+static int __uwb_dev_sys_add(struct uwb_dev *uwb_dev, struct device *parent_dev)
+{
+        int result;
+        struct device *dev;
+
+        d_fnstart(4, NULL, "(uwb_dev %p parent_dev %p)\n", uwb_dev, parent_dev);
+        BUG_ON(parent_dev == NULL);
+
+        dev = &uwb_dev->dev;
+        /* Device sysfs files are only useful for neighbor devices not
+           local radio controllers. */
+        if (&uwb_dev->rc->uwb_dev != uwb_dev)
+                dev->groups = groups;
+        dev->parent = parent_dev;
+        dev_set_drvdata(dev, uwb_dev);
+
+        result = device_add(dev);
+        d_fnend(4, NULL, "(uwb_dev %p parent_dev %p) = %d\n", uwb_dev, parent_dev, result);
+        return result;
+}
+
+
+static void __uwb_dev_sys_rm(struct uwb_dev *uwb_dev)
+{
+        d_fnstart(4, NULL, "(uwb_dev %p)\n", uwb_dev);
+        dev_set_drvdata(&uwb_dev->dev, NULL);
+        device_del(&uwb_dev->dev);
+        d_fnend(4, NULL, "(uwb_dev %p) = void\n", uwb_dev);
+}
+
+
+/**
+ * Register and initialize a new UWB device
+ *
+ * Did you call uwb_dev_init() on it?
+ *
+ * @parent_rc: is the parent radio controller who has the link to the
+ *             device. When registering the UWB device that is a UWB
+ *             Radio Controller, we point back to it.
+ *
+ * If registering the device that is part of a radio, caller has set
+ * rc->uwb_dev->dev. Otherwise it is to be left NULL--a new one will
+ * be allocated.
+ */
+int uwb_dev_add(struct uwb_dev *uwb_dev, struct device *parent_dev,
+                struct uwb_rc *parent_rc)
+{
+        int result;
+        struct device *dev;
+
+        BUG_ON(uwb_dev == NULL);
+        BUG_ON(parent_dev == NULL);
+        BUG_ON(parent_rc == NULL);
+
+        mutex_lock(&uwb_dev->mutex);
+        dev = &uwb_dev->dev;
+        uwb_dev->rc = parent_rc;
+        result = __uwb_dev_sys_add(uwb_dev, parent_dev);
+        if (result < 0)
+                printk(KERN_ERR "UWB: unable to register dev %s with sysfs: %d\n",
+                       dev_name(dev), result);
+        mutex_unlock(&uwb_dev->mutex);
+        return result;
+}
+
+
+void uwb_dev_rm(struct uwb_dev *uwb_dev)
+{
+        mutex_lock(&uwb_dev->mutex);
+        __uwb_dev_sys_rm(uwb_dev);
+        mutex_unlock(&uwb_dev->mutex);
+}
+
+
+static
+int __uwb_dev_try_get(struct device *dev, void *__target_uwb_dev)
+{
+        struct uwb_dev *target_uwb_dev = __target_uwb_dev;
+        struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+        if (uwb_dev == target_uwb_dev) {
+                uwb_dev_get(uwb_dev);
+                return 1;
+        } else
+                return 0;
+}
+
+
+/**
+ * Given a UWB device descriptor, validate and refcount it
+ *
+ * @returns NULL if the device does not exist or is quiescing; the ptr to
+ *               it otherwise.
+ */
+struct uwb_dev *uwb_dev_try_get(struct uwb_rc *rc, struct uwb_dev *uwb_dev)
+{
+        if (uwb_dev_for_each(rc, __uwb_dev_try_get, uwb_dev))
+                return uwb_dev;
+        else
+                return NULL;
+}
+EXPORT_SYMBOL_GPL(uwb_dev_try_get);
+
+
+/**
+ * Remove a device from the system [grunt for other functions]
+ */
+int __uwb_dev_offair(struct uwb_dev *uwb_dev, struct uwb_rc *rc)
+{
+        struct device *dev = &uwb_dev->dev;
+        char macbuf[UWB_ADDR_STRSIZE], devbuf[UWB_ADDR_STRSIZE];
+
+        d_fnstart(3, NULL, "(dev %p [uwb_dev %p], uwb_rc %p)\n", dev, uwb_dev, rc);
+        uwb_mac_addr_print(macbuf, sizeof(macbuf), &uwb_dev->mac_addr);
+        uwb_dev_addr_print(devbuf, sizeof(devbuf), &uwb_dev->dev_addr);
+        dev_info(dev, "uwb device (mac %s dev %s) disconnected from %s %s\n",
+                 macbuf, devbuf,
+                 rc ? rc->uwb_dev.dev.parent->bus->name : "n/a",
+                 rc ? dev_name(rc->uwb_dev.dev.parent) : "");
+        uwb_dev_rm(uwb_dev);
+        uwb_dev_put(uwb_dev);   /* for the creation in _onair() */
+        d_fnend(3, NULL, "(dev %p [uwb_dev %p], uwb_rc %p) = 0\n", dev, uwb_dev, rc);
+        return 0;
+}
+
+
+/**
+ * A device went off the air, clean up after it!
+ *
+ * This is called by the UWB Daemon (through the beacon purge function
+ * uwb_bcn_cache_purge) when it is detected that a device has been in
+ * radio silence for a while.
+ *
+ * If this device is actually a local radio controller we don't need
+ * to go through the offair process, as it is not registered as that.
+ *
+ * NOTE: uwb_bcn_cache.mutex is held!
+ */
+void uwbd_dev_offair(struct uwb_beca_e *bce)
+{
+        struct uwb_dev *uwb_dev;
+
+        uwb_dev = bce->uwb_dev;
+        if (uwb_dev) {
+                uwb_notify(uwb_dev->rc, uwb_dev, UWB_NOTIF_OFFAIR);
+                __uwb_dev_offair(uwb_dev, uwb_dev->rc);
+        }
+}
+
+
+/**
+ * A device went on the air, start it up!
+ *
+ * This is called by the UWB Daemon when it is detected that a device
+ * has popped up in the radio range of the radio controller.
+ *
+ * It will just create the freaking device, register the beacon and
+ * stuff and yatla, done.
+ *
+ *
+ * NOTE: uwb_beca.mutex is held, bce->mutex is held
+ */
+void uwbd_dev_onair(struct uwb_rc *rc, struct uwb_beca_e *bce)
+{
+        int result;
+        struct device *dev = &rc->uwb_dev.dev;
+        struct uwb_dev *uwb_dev;
+        char macbuf[UWB_ADDR_STRSIZE], devbuf[UWB_ADDR_STRSIZE];
+
+        uwb_mac_addr_print(macbuf, sizeof(macbuf), bce->mac_addr);
+        uwb_dev_addr_print(devbuf, sizeof(devbuf), &bce->dev_addr);
+        uwb_dev = kzalloc(sizeof(struct uwb_dev), GFP_KERNEL);
+        if (uwb_dev == NULL) {
+                dev_err(dev, "new device %s: Cannot allocate memory\n",
+                        macbuf);
+                return;
+        }
+        uwb_dev_init(uwb_dev);          /* This sets refcnt to one, we own it */
+        uwb_dev->mac_addr = *bce->mac_addr;
+        uwb_dev->dev_addr = bce->dev_addr;
+        dev_set_name(&uwb_dev->dev, macbuf);
+        result = uwb_dev_add(uwb_dev, &rc->uwb_dev.dev, rc);
+        if (result < 0) {
+                dev_err(dev, "new device %s: cannot instantiate device\n",
+                        macbuf);
+                goto error_dev_add;
+        }
+        /* plug the beacon cache */
+        bce->uwb_dev = uwb_dev;
+        uwb_dev->bce = bce;
+        uwb_bce_get(bce);               /* released in uwb_dev_sys_release() */
+        dev_info(dev, "uwb device (mac %s dev %s) connected to %s %s\n",
+                 macbuf, devbuf, rc->uwb_dev.dev.parent->bus->name,
+                 dev_name(rc->uwb_dev.dev.parent));
+        uwb_notify(rc, uwb_dev, UWB_NOTIF_ONAIR);
+        return;
+
+error_dev_add:
+        kfree(uwb_dev);
+        return;
+}
+
+/**
+ * Iterate over the list of UWB devices, calling a @function on each
+ *
+ * See docs for bus_for_each()....
+ *
+ * @rc:       radio controller for the devices.
+ * @function: function to call.
+ * @priv:     data to pass to @function.
+ * @returns:  0 if no invocation of function() returned a value
+ *            different to zero. That value otherwise.
+ */
+int uwb_dev_for_each(struct uwb_rc *rc, uwb_dev_for_each_f function, void *priv)
+{
+        return device_for_each_child(&rc->uwb_dev.dev, priv, function);
+}
+EXPORT_SYMBOL_GPL(uwb_dev_for_each);
diff --git a/drivers/uwb/lc-rc.c b/drivers/uwb/lc-rc.c
new file mode 100644
index 000000000000..ee5772f00d42
--- /dev/null
+++ b/drivers/uwb/lc-rc.c
@@ -0,0 +1,495 @@
+/*
+ * Ultra Wide Band
+ * Life cycle of radio controllers
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ *
+ * A UWB radio controller is also a UWB device, so it embeds one...
+ *
+ * List of RCs comes from the 'struct class uwb_rc_class'.
+ */
+
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/random.h>
+#include <linux/kdev_t.h>
+#include <linux/etherdevice.h>
+#include <linux/usb.h>
+
+#define D_LOCAL 1
+#include <linux/uwb/debug.h>
+#include "uwb-internal.h"
+
+static int uwb_rc_index_match(struct device *dev, void *data)
+{
+        int *index = data;
+        struct uwb_rc *rc = dev_get_drvdata(dev);
+
+        if (rc->index == *index)
+                return 1;
+        return 0;
+}
+
+static struct uwb_rc *uwb_rc_find_by_index(int index)
+{
+        struct device *dev;
+        struct uwb_rc *rc = NULL;
+
+        dev = class_find_device(&uwb_rc_class, NULL, &index, uwb_rc_index_match);
+        if (dev)
+                rc = dev_get_drvdata(dev);
+        return rc;
+}
+
+static int uwb_rc_new_index(void)
+{
+        int index = 0;
+
+        for (;;) {
+                if (!uwb_rc_find_by_index(index))
+                        return index;
+                if (++index < 0)
+                        index = 0;
+        }
+}
+
+/**
+ * Release the backing device of a uwb_rc that has been dynamically allocated.
+ */
+static void uwb_rc_sys_release(struct device *dev)
+{
+        struct uwb_dev *uwb_dev = container_of(dev, struct uwb_dev, dev);
+        struct uwb_rc *rc = container_of(uwb_dev, struct uwb_rc, uwb_dev);
+
+        uwb_rc_neh_destroy(rc);
+        uwb_rc_ie_release(rc);
+        d_printf(1, dev, "freed uwb_rc %p\n", rc);
+        kfree(rc);
+}
+
+
+void uwb_rc_init(struct uwb_rc *rc)
+{
+        struct uwb_dev *uwb_dev = &rc->uwb_dev;
+
+        uwb_dev_init(uwb_dev);
+        rc->uwb_dev.dev.class = &uwb_rc_class;
+        rc->uwb_dev.dev.release = uwb_rc_sys_release;
+        uwb_rc_neh_create(rc);
+        rc->beaconing = -1;
+        rc->scan_type = UWB_SCAN_DISABLED;
+        INIT_LIST_HEAD(&rc->notifs_chain.list);
+        mutex_init(&rc->notifs_chain.mutex);
+        uwb_drp_avail_init(rc);
+        uwb_rc_ie_init(rc);
+        uwb_rsv_init(rc);
+        uwb_rc_pal_init(rc);
+}
+EXPORT_SYMBOL_GPL(uwb_rc_init);
+
+
+struct uwb_rc *uwb_rc_alloc(void)
+{
+        struct uwb_rc *rc;
+        rc = kzalloc(sizeof(*rc), GFP_KERNEL);
+        if (rc == NULL)
+                return NULL;
+        uwb_rc_init(rc);
+        return rc;
+}
+EXPORT_SYMBOL_GPL(uwb_rc_alloc);
+
+static struct attribute *rc_attrs[] = {
+                &dev_attr_mac_address.attr,
+                &dev_attr_scan.attr,
+                &dev_attr_beacon.attr,
+                NULL,
+};
+
+static struct attribute_group rc_attr_group = {
+        .attrs = rc_attrs,
+};
+
+/*
+ * Registration of sysfs specific stuff
+ */
+static int uwb_rc_sys_add(struct uwb_rc *rc)
+{
+        return sysfs_create_group(&rc->uwb_dev.dev.kobj, &rc_attr_group);
+}
+
+
+static void __uwb_rc_sys_rm(struct uwb_rc *rc)
+{
+        sysfs_remove_group(&rc->uwb_dev.dev.kobj, &rc_attr_group);
+}
+
+/**
+ * uwb_rc_mac_addr_setup - get an RC's EUI-48 address or set it
+ * @rc:  the radio controller.
+ *
+ * If the EUI-48 address is 00:00:00:00:00:00 or FF:FF:FF:FF:FF:FF
+ * then a random locally administered EUI-48 is generated and set on
+ * the device.  The probability of address collisions is sufficiently
+ * unlikely (1/2^40 = 9.1e-13) that they're not checked for.
+ */
+static
+int uwb_rc_mac_addr_setup(struct uwb_rc *rc)
+{
+        int result;
+        struct device *dev = &rc->uwb_dev.dev;
+        struct uwb_dev *uwb_dev = &rc->uwb_dev;
+        char devname[UWB_ADDR_STRSIZE];
+        struct uwb_mac_addr addr;
+
+        result = uwb_rc_mac_addr_get(rc, &addr);
+        if (result < 0) {
+                dev_err(dev, "cannot retrieve UWB EUI-48 address: %d\n", result);
+                return result;
+        }
+
+        if (uwb_mac_addr_unset(&addr) || uwb_mac_addr_bcast(&addr)) {
+                addr.data[0] = 0x02; /* locally adminstered and unicast */
+                get_random_bytes(&addr.data[1], sizeof(addr.data)-1);
+
+                result = uwb_rc_mac_addr_set(rc, &addr);
+                if (result < 0) {
+                        uwb_mac_addr_print(devname, sizeof(devname), &addr);
+                        dev_err(dev, "cannot set EUI-48 address %s: %d\n",
+                                devname, result);
+                        return result;
+                }
+        }
+        uwb_dev->mac_addr = addr;
+        return 0;
+}
+
+
+
+static int uwb_rc_setup(struct uwb_rc *rc)
+{
+        int result;
+        struct device *dev = &rc->uwb_dev.dev;
+
+        result = uwb_rc_reset(rc);
+        if (result < 0) {
+                dev_err(dev, "cannot reset UWB radio: %d\n", result);
+                goto error;
+        }
+        result = uwb_rc_mac_addr_setup(rc);
+        if (result < 0) {
+                dev_err(dev, "cannot setup UWB MAC address: %d\n", result);
+                goto error;
+        }
+        result = uwb_rc_dev_addr_assign(rc);
+        if (result < 0) {
+                dev_err(dev, "cannot assign UWB DevAddr: %d\n", result);
+                goto error;
+        }
+        result = uwb_rc_ie_setup(rc);
+        if (result < 0) {
+                dev_err(dev, "cannot setup IE subsystem: %d\n", result);
+                goto error_ie_setup;
+        }
+        result = uwb_rsv_setup(rc);
+        if (result < 0) {
+                dev_err(dev, "cannot setup reservation subsystem: %d\n", result);
+                goto error_rsv_setup;
+        }
+        uwb_dbg_add_rc(rc);
+        return 0;
+
+error_rsv_setup:
+        uwb_rc_ie_release(rc);
+error_ie_setup:
+error:
+        return result;
+}
+
+
+/**
+ * Register a new UWB radio controller
+ *
+ * Did you call uwb_rc_init() on your rc?
+ *
+ * We assume that this is being called with a > 0 refcount on
+ * it [through ops->{get|put}_device(). We'll take our own, though.
+ *
+ * @parent_dev is our real device, the one that provides the actual UWB device
+ */
+int uwb_rc_add(struct uwb_rc *rc, struct device *parent_dev, void *priv)
+{
+        int result;
+        struct device *dev;
+        char macbuf[UWB_ADDR_STRSIZE], devbuf[UWB_ADDR_STRSIZE];
+
+        rc->index = uwb_rc_new_index();
+
+        dev = &rc->uwb_dev.dev;
+        dev_set_name(dev, "uwb%d", rc->index);
+
+        rc->priv = priv;
+
+        result = rc->start(rc);
+        if (result < 0)
+                goto error_rc_start;
+
+        result = uwb_rc_setup(rc);
+        if (result < 0) {
+                dev_err(dev, "cannot setup UWB radio controller: %d\n", result);
+                goto error_rc_setup;
+        }
+
+        result = uwb_dev_add(&rc->uwb_dev, parent_dev, rc);
+        if (result < 0 && result != -EADDRNOTAVAIL)
+                goto error_dev_add;
+
+        result = uwb_rc_sys_add(rc);
+        if (result < 0) {
+                dev_err(parent_dev, "cannot register UWB radio controller "
+                        "dev attributes: %d\n", result);
+                goto error_sys_add;
+        }
+
+        uwb_mac_addr_print(macbuf, sizeof(macbuf), &rc->uwb_dev.mac_addr);
+        uwb_dev_addr_print(devbuf, sizeof(devbuf), &rc->uwb_dev.dev_addr);
+        dev_info(dev,
+                 "new uwb radio controller (mac %s dev %s) on %s %s\n",
+                 macbuf, devbuf, parent_dev->bus->name, dev_name(parent_dev));
+        rc->ready = 1;
+        return 0;
+
+error_sys_add:
+        uwb_dev_rm(&rc->uwb_dev);
+error_dev_add:
+error_rc_setup:
+        rc->stop(rc);
+        uwbd_flush(rc);
+error_rc_start:
+        return result;
+}
+EXPORT_SYMBOL_GPL(uwb_rc_add);
+
+
+static int uwb_dev_offair_helper(struct device *dev, void *priv)
+{
+        struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+
+        return __uwb_dev_offair(uwb_dev, uwb_dev->rc);
+}
+
+/*
+ * Remove a Radio Controller; stop beaconing/scanning, disconnect all children
+ */
+void uwb_rc_rm(struct uwb_rc *rc)
+{
+        rc->ready = 0;
+
+        uwb_dbg_del_rc(rc);
+        uwb_rsv_cleanup(rc);
+        uwb_rc_ie_rm(rc, UWB_IDENTIFICATION_IE);
+        if (rc->beaconing >= 0)
+                uwb_rc_beacon(rc, -1, 0);
+        if (rc->scan_type != UWB_SCAN_DISABLED)
+                uwb_rc_scan(rc, rc->scanning, UWB_SCAN_DISABLED, 0);
+        uwb_rc_reset(rc);
+
+        rc->stop(rc);
+        uwbd_flush(rc);
+
+        uwb_dev_lock(&rc->uwb_dev);
+        rc->priv = NULL;
+        rc->cmd = NULL;
+        uwb_dev_unlock(&rc->uwb_dev);
+        mutex_lock(&uwb_beca.mutex);
+        uwb_dev_for_each(rc, uwb_dev_offair_helper, NULL);
+        __uwb_rc_sys_rm(rc);
+        mutex_unlock(&uwb_beca.mutex);
+        uwb_dev_rm(&rc->uwb_dev);
+}
+EXPORT_SYMBOL_GPL(uwb_rc_rm);
+
+static int find_rc_try_get(struct device *dev, void *data)
+{
+        struct uwb_rc *target_rc = data;
+        struct uwb_rc *rc = dev_get_drvdata(dev);
+
+        if (rc == NULL) {
+                WARN_ON(1);
+                return 0;
+        }
+        if (rc == target_rc) {
+                if (rc->ready == 0)
+                        return 0;
+                else
+                        return 1;
+        }
+        return 0;
+}
+
+/**
+ * Given a radio controller descriptor, validate and refcount it
+ *
+ * @returns NULL if the rc does not exist or is quiescing; the ptr to
+ *               it otherwise.
+ */
+struct uwb_rc *__uwb_rc_try_get(struct uwb_rc *target_rc)
+{
+        struct device *dev;
+        struct uwb_rc *rc = NULL;
+
+        dev = class_find_device(&uwb_rc_class, NULL, target_rc,
+                                find_rc_try_get);
+        if (dev) {
+                rc = dev_get_drvdata(dev);
+                __uwb_rc_get(rc);
+        }
+        return rc;
+}
+EXPORT_SYMBOL_GPL(__uwb_rc_try_get);
+
+/*
+ * RC get for external refcount acquirers...
+ *
+ * Increments the refcount of the device and it's backend modules
+ */
+static inline struct uwb_rc *uwb_rc_get(struct uwb_rc *rc)
+{
+        if (rc->ready == 0)
+                return NULL;
+        uwb_dev_get(&rc->uwb_dev);
+        return rc;
+}
+
+static int find_rc_grandpa(struct device *dev, void *data)
+{
+        struct device *grandpa_dev = data;
+        struct uwb_rc *rc = dev_get_drvdata(dev);
+
+        if (rc->uwb_dev.dev.parent->parent == grandpa_dev) {
+                rc = uwb_rc_get(rc);
+                return 1;
+        }
+        return 0;
+}
+
+/**
+ * Locate and refcount a radio controller given a common grand-parent
+ *
+ * @grandpa_dev  Pointer to the 'grandparent' device structure.
+ * @returns NULL If the rc does not exist or is quiescing; the ptr to
+ *               it otherwise, properly referenced.
+ *
+ * The Radio Control interface (or the UWB Radio Controller) is always
+ * an interface of a device. The parent is the interface, the
+ * grandparent is the device that encapsulates the interface.
+ *
+ * There is no need to lock around as the "grandpa" would be
+ * refcounted by the target, and to remove the referemes, the
+ * uwb_rc_class->sem would have to be taken--we hold it, ergo we
+ * should be safe.
+ */
+struct uwb_rc *uwb_rc_get_by_grandpa(const struct device *grandpa_dev)
+{
+        struct device *dev;
+        struct uwb_rc *rc = NULL;
+
+        dev = class_find_device(&uwb_rc_class, NULL, (void *)grandpa_dev,
+                                find_rc_grandpa);
+        if (dev)
+                rc = dev_get_drvdata(dev);
+        return rc;
+}
+EXPORT_SYMBOL_GPL(uwb_rc_get_by_grandpa);
+
+/**
+ * Find a radio controller by device address
+ *
+ * @returns the pointer to the radio controller, properly referenced
+ */
+static int find_rc_dev(struct device *dev, void *data)
+{
+        struct uwb_dev_addr *addr = data;
+        struct uwb_rc *rc = dev_get_drvdata(dev);
+
+        if (rc == NULL) {
+                WARN_ON(1);
+                return 0;
+        }
+        if (!uwb_dev_addr_cmp(&rc->uwb_dev.dev_addr, addr)) {
+                rc = uwb_rc_get(rc);
+                return 1;
+        }
+        return 0;
+}
+
+struct uwb_rc *uwb_rc_get_by_dev(const struct uwb_dev_addr *addr)
+{
+        struct device *dev;
+        struct uwb_rc *rc = NULL;
+
+        dev = class_find_device(&uwb_rc_class, NULL, (void *)addr,
+                                find_rc_dev);
+        if (dev)
+                rc = dev_get_drvdata(dev);
+
+        return rc;
+}
+EXPORT_SYMBOL_GPL(uwb_rc_get_by_dev);
+
+/**
+ * Drop a reference on a radio controller
+ *
+ * This is the version that should be done by entities external to the
+ * UWB Radio Control stack (ie: clients of the API).
+ */
+void uwb_rc_put(struct uwb_rc *rc)
+{
+        __uwb_rc_put(rc);
+}
+EXPORT_SYMBOL_GPL(uwb_rc_put);
+
+/*
+ *
+ *
+ */
+ssize_t uwb_rc_print_IEs(struct uwb_rc *uwb_rc, char *buf, size_t size)
+{
+        ssize_t result;
+        struct uwb_rc_evt_get_ie *ie_info;
+        struct uwb_buf_ctx ctx;
+
+        result = uwb_rc_get_ie(uwb_rc, &ie_info);
+        if (result < 0)
+                goto error_get_ie;
+        ctx.buf = buf;
+        ctx.size = size;
+        ctx.bytes = 0;
+        uwb_ie_for_each(&uwb_rc->uwb_dev, uwb_ie_dump_hex, &ctx,
+                        ie_info->IEData, result - sizeof(*ie_info));
+        result = ctx.bytes;
+        kfree(ie_info);
+error_get_ie:
+        return result;
+}
+
diff --git a/drivers/uwb/neh.c b/drivers/uwb/neh.c
new file mode 100644
index 000000000000..9b4eb64327ac
--- /dev/null
+++ b/drivers/uwb/neh.c
@@ -0,0 +1,616 @@
+/*
+ * WUSB Wire Adapter: Radio Control Interface (WUSB[8])
+ * Notification and Event Handling
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * The RC interface of the Host Wire Adapter (USB dongle) or WHCI PCI
+ * card delivers a stream of notifications and events to the
+ * notification end event endpoint or area. This code takes care of
+ * getting a buffer with that data, breaking it up in separate
+ * notifications and events and then deliver those.
+ *
+ * Events are answers to commands and they carry a context ID that
+ * associates them to the command. Notifications are that,
+ * notifications, they come out of the blue and have a context ID of
+ * zero. Think of the context ID kind of like a handler. The
+ * uwb_rc_neh_* code deals with managing context IDs.
+ *
+ * This is why you require a handle to operate on a UWB host. When you
+ * open a handle a context ID is assigned to you.
+ *
+ * So, as it is done is:
+ *
+ * 1. Add an event handler [uwb_rc_neh_add()] (assigns a ctx id)
+ * 2. Issue command [rc->cmd(rc, ...)]
+ * 3. Arm the timeout timer [uwb_rc_neh_arm()]
+ * 4, Release the reference to the neh [uwb_rc_neh_put()]
+ * 5. Wait for the callback
+ * 6. Command result (RCEB) is passed to the callback
+ *
+ * If (2) fails, you should remove the handle [uwb_rc_neh_rm()]
+ * instead of arming the timer.
+ *
+ * Handles are for using in *serialized* code, single thread.
+ *
+ * When the notification/event comes, the IRQ handler/endpoint
+ * callback passes the data read to uwb_rc_neh_grok() which will break
+ * it up in a discrete series of events, look up who is listening for
+ * them and execute the pertinent callbacks.
+ *
+ * If the reader detects an error while reading the data stream, call
+ * uwb_rc_neh_error().
+ *
+ * CONSTRAINTS/ASSUMPTIONS:
+ *
+ * - Most notifications/events are small (less thank .5k), copying
+ *   around is ok.
+ *
+ * - Notifications/events are ALWAYS smaller than PAGE_SIZE
+ *
+ * - Notifications/events always come in a single piece (ie: a buffer
+ *   will always contain entire notifications/events).
+ *
+ * - we cannot know in advance how long each event is (because they
+ *   lack a length field in their header--smart move by the standards
+ *   body, btw). So we need a facility to get the event size given the
+ *   header. This is what the EST code does (notif/Event Size
+ *   Tables), check nest.c--as well, you can associate the size to
+ *   the handle [w/ neh->extra_size()].
+ *
+ * - Most notifications/events are fixed size; only a few are variable
+ *   size (NEST takes care of that).
+ *
+ * - Listeners of events expect them, so they usually provide a
+ *   buffer, as they know the size. Listeners to notifications don't,
+ *   so we allocate their buffers dynamically.
+ */
+#include <linux/kernel.h>
+#include <linux/timer.h>
+#include <linux/err.h>
+
+#include "uwb-internal.h"
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+/*
+ * UWB Radio Controller Notification/Event Handle
+ *
+ * Represents an entity waiting for an event coming from the UWB Radio
+ * Controller with a given context id (context) and type (evt_type and
+ * evt). On reception of the notification/event, the callback (cb) is
+ * called with the event.
+ *
+ * If the timer expires before the event is received, the callback is
+ * called with -ETIMEDOUT as the event size.
+ */
+struct uwb_rc_neh {
+        struct kref kref;
+
+        struct uwb_rc *rc;
+        u8 evt_type;
+        __le16 evt;
+        u8 context;
+        uwb_rc_cmd_cb_f cb;
+        void *arg;
+
+        struct timer_list timer;
+        struct list_head list_node;
+};
+
+static void uwb_rc_neh_timer(unsigned long arg);
+
+static void uwb_rc_neh_release(struct kref *kref)
+{
+        struct uwb_rc_neh *neh = container_of(kref, struct uwb_rc_neh, kref);
+
+        kfree(neh);
+}
+
+static void uwb_rc_neh_get(struct uwb_rc_neh *neh)
+{
+        kref_get(&neh->kref);
+}
+
+/**
+ * uwb_rc_neh_put - release reference to a neh
+ * @neh: the neh
+ */
+void uwb_rc_neh_put(struct uwb_rc_neh *neh)
+{
+        kref_put(&neh->kref, uwb_rc_neh_release);
+}
+
+
+/**
+ * Assigns @neh a context id from @rc's pool
+ *
+ * @rc:     UWB Radio Controller descriptor; @rc->neh_lock taken
+ * @neh:    Notification/Event Handle
+ * @returns 0 if context id was assigned ok; < 0 errno on error (if
+ *          all the context IDs are taken).
+ *
+ * (assumes @wa is locked).
+ *
+ * NOTE: WUSB spec reserves context ids 0x00 for notifications and
+ *       0xff is invalid, so they must not be used. Initialization
+ *       fills up those two in the bitmap so they are not allocated.
+ *
+ * We spread the allocation around to reduce the posiblity of two
+ * consecutive opened @neh's getting the same context ID assigned (to
+ * avoid surprises with late events that timed out long time ago). So
+ * first we search from where @rc->ctx_roll is, if not found, we
+ * search from zero.
+ */
+static
+int __uwb_rc_ctx_get(struct uwb_rc *rc, struct uwb_rc_neh *neh)
+{
+        int result;
+        result = find_next_zero_bit(rc->ctx_bm, UWB_RC_CTX_MAX,
+                                    rc->ctx_roll++);
+        if (result < UWB_RC_CTX_MAX)
+                goto found;
+        result = find_first_zero_bit(rc->ctx_bm, UWB_RC_CTX_MAX);
+        if (result < UWB_RC_CTX_MAX)
+                goto found;
+        return -ENFILE;
+found:
+        set_bit(result, rc->ctx_bm);
+        neh->context = result;
+        return 0;
+}
+
+
+/** Releases @neh's context ID back to @rc (@rc->neh_lock is locked). */
+static
+void __uwb_rc_ctx_put(struct uwb_rc *rc, struct uwb_rc_neh *neh)
+{
+        struct device *dev = &rc->uwb_dev.dev;
+        if (neh->context == 0)
+                return;
+        if (test_bit(neh->context, rc->ctx_bm) == 0) {
+                dev_err(dev, "context %u not set in bitmap\n",
+                        neh->context);
+                WARN_ON(1);
+        }
+        clear_bit(neh->context, rc->ctx_bm);
+        neh->context = 0;
+}
+
+/**
+ * uwb_rc_neh_add - add a neh for a radio controller command
+ * @rc:             the radio controller
+ * @cmd:            the radio controller command
+ * @expected_type:  the type of the expected response event
+ * @expected_event: the expected event ID
+ * @cb:             callback for when the event is received
+ * @arg:            argument for the callback
+ *
+ * Creates a neh and adds it to the list of those waiting for an
+ * event.  A context ID will be assigned to the command.
+ */
+struct uwb_rc_neh *uwb_rc_neh_add(struct uwb_rc *rc, struct uwb_rccb *cmd,
+                                  u8 expected_type, u16 expected_event,
+                                  uwb_rc_cmd_cb_f cb, void *arg)
+{
+        int result;
+        unsigned long flags;
+        struct device *dev = &rc->uwb_dev.dev;
+        struct uwb_rc_neh *neh;
+
+        neh = kzalloc(sizeof(*neh), GFP_KERNEL);
+        if (neh == NULL) {
+                result = -ENOMEM;
+                goto error_kzalloc;
+        }
+
+        kref_init(&neh->kref);
+        INIT_LIST_HEAD(&neh->list_node);
+        init_timer(&neh->timer);
+        neh->timer.function = uwb_rc_neh_timer;
+        neh->timer.data     = (unsigned long)neh;
+
+        neh->rc = rc;
+        neh->evt_type = expected_type;
+        neh->evt = cpu_to_le16(expected_event);
+        neh->cb = cb;
+        neh->arg = arg;
+
+        spin_lock_irqsave(&rc->neh_lock, flags);
+        result = __uwb_rc_ctx_get(rc, neh);
+        if (result >= 0) {
+                cmd->bCommandContext = neh->context;
+                list_add_tail(&neh->list_node, &rc->neh_list);
+                uwb_rc_neh_get(neh);
+        }
+        spin_unlock_irqrestore(&rc->neh_lock, flags);
+        if (result < 0)
+                goto error_ctx_get;
+
+        return neh;
+
+error_ctx_get:
+        kfree(neh);
+error_kzalloc:
+        dev_err(dev, "cannot open handle to radio controller: %d\n", result);
+        return ERR_PTR(result);
+}
+
+static void __uwb_rc_neh_rm(struct uwb_rc *rc, struct uwb_rc_neh *neh)
+{
+        del_timer(&neh->timer);
+        __uwb_rc_ctx_put(rc, neh);
+        list_del(&neh->list_node);
+}
+
+/**
+ * uwb_rc_neh_rm - remove a neh.
+ * @rc:  the radio controller
+ * @neh: the neh to remove
+ *
+ * Remove an active neh immediately instead of waiting for the event
+ * (or a time out).
+ */
+void uwb_rc_neh_rm(struct uwb_rc *rc, struct uwb_rc_neh *neh)
+{
+        unsigned long flags;
+
+        spin_lock_irqsave(&rc->neh_lock, flags);
+        __uwb_rc_neh_rm(rc, neh);
+        spin_unlock_irqrestore(&rc->neh_lock, flags);
+
+        uwb_rc_neh_put(neh);
+}
+
+/**
+ * uwb_rc_neh_arm - arm an event handler timeout timer
+ *
+ * @rc:     UWB Radio Controller
+ * @neh:    Notification/event handler for @rc
+ *
+ * The timer is only armed if the neh is active.
+ */
+void uwb_rc_neh_arm(struct uwb_rc *rc, struct uwb_rc_neh *neh)
+{
+        unsigned long flags;
+
+        spin_lock_irqsave(&rc->neh_lock, flags);
+        if (neh->context)
+                mod_timer(&neh->timer,
+                          jiffies + msecs_to_jiffies(UWB_RC_CMD_TIMEOUT_MS));
+        spin_unlock_irqrestore(&rc->neh_lock, flags);
+}
+
+static void uwb_rc_neh_cb(struct uwb_rc_neh *neh, struct uwb_rceb *rceb, size_t size)
+{
+        (*neh->cb)(neh->rc, neh->arg, rceb, size);
+        uwb_rc_neh_put(neh);
+}
+
+static bool uwb_rc_neh_match(struct uwb_rc_neh *neh, const struct uwb_rceb *rceb)
+{
+        return neh->evt_type == rceb->bEventType
+                && neh->evt == rceb->wEvent
+                && neh->context == rceb->bEventContext;
+}
+
+/**
+ * Find the handle waiting for a RC Radio Control Event
+ *
+ * @rc:         UWB Radio Controller
+ * @rceb:       Pointer to the RCEB buffer
+ * @event_size: Pointer to the size of the RCEB buffer. Might be
+ *              adjusted to take into account the @neh->extra_size
+ *              settings.
+ *
+ * If the listener has no buffer (NULL buffer), one is allocated for
+ * the right size (the amount of data received). @neh->ptr will point
+ * to the event payload, which always starts with a 'struct
+ * uwb_rceb'. kfree() it when done.
+ */
+static
+struct uwb_rc_neh *uwb_rc_neh_lookup(struct uwb_rc *rc,
+                                     const struct uwb_rceb *rceb)
+{
+        struct uwb_rc_neh *neh = NULL, *h;
+        unsigned long flags;
+
+        spin_lock_irqsave(&rc->neh_lock, flags);
+
+        list_for_each_entry(h, &rc->neh_list, list_node) {
+                if (uwb_rc_neh_match(h, rceb)) {
+                        neh = h;
+                        break;
+                }
+        }
+
+        if (neh)
+                __uwb_rc_neh_rm(rc, neh);
+
+        spin_unlock_irqrestore(&rc->neh_lock, flags);
+
+        return neh;
+}
+
+
+/**
+ * Process notifications coming from the radio control interface
+ *
+ * @rc:    UWB Radio Control Interface descriptor
+ * @neh:   Notification/Event Handler @neh->ptr points to
+ *         @uwb_evt->buffer.
+ *
+ * This function is called by the event/notif handling subsystem when
+ * notifications arrive (hwarc_probe() arms a notification/event handle
+ * that calls back this function for every received notification; this
+ * function then will rearm itself).
+ *
+ * Notification data buffers are dynamically allocated by the NEH
+ * handling code in neh.c [uwb_rc_neh_lookup()]. What is actually
+ * allocated is space to contain the notification data.
+ *
+ * Buffers are prefixed with a Radio Control Event Block (RCEB) as
+ * defined by the WUSB Wired-Adapter Radio Control interface. We
+ * just use it for the notification code.
+ *
+ * On each case statement we just transcode endianess of the different
+ * fields. We declare a pointer to a RCI definition of an event, and
+ * then to a UWB definition of the same event (which are the same,
+ * remember). Event if we use different pointers
+ */
+static
+void uwb_rc_notif(struct uwb_rc *rc, struct uwb_rceb *rceb, ssize_t size)
+{
+        struct device *dev = &rc->uwb_dev.dev;
+        struct uwb_event *uwb_evt;
+
+        if (size == -ESHUTDOWN)
+                return;
+        if (size < 0) {
+                dev_err(dev, "ignoring event with error code %zu\n",
+                        size);
+                return;
+        }
+
+        uwb_evt = kzalloc(sizeof(*uwb_evt), GFP_ATOMIC);
+        if (unlikely(uwb_evt == NULL)) {
+                dev_err(dev, "no memory to queue event 0x%02x/%04x/%02x\n",
+                        rceb->bEventType, le16_to_cpu(rceb->wEvent),
+                        rceb->bEventContext);
+                return;
+        }
+        uwb_evt->rc = __uwb_rc_get(rc); /* will be put by uwbd's uwbd_event_handle() */
+        uwb_evt->ts_jiffies = jiffies;
+        uwb_evt->type = UWB_EVT_TYPE_NOTIF;
+        uwb_evt->notif.size = size;
+        uwb_evt->notif.rceb = rceb;
+
+        switch (le16_to_cpu(rceb->wEvent)) {
+                /* Trap some vendor specific events
+                 *
+                 * FIXME: move this to handling in ptc-est, where we
+                 * register a NULL event handler for these two guys
+                 * using the Intel IDs.
+                 */
+        case 0x0103:
+                dev_info(dev, "FIXME: DEVICE ADD\n");
+                return;
+        case 0x0104:
+                dev_info(dev, "FIXME: DEVICE RM\n");
+                return;
+        default:
+                break;
+        }
+
+        uwbd_event_queue(uwb_evt);
+}
+
+static void uwb_rc_neh_grok_event(struct uwb_rc *rc, struct uwb_rceb *rceb, size_t size)
+{
+        struct device *dev = &rc->uwb_dev.dev;
+        struct uwb_rc_neh *neh;
+        struct uwb_rceb *notif;
+
+        if (rceb->bEventContext == 0) {
+                notif = kmalloc(size, GFP_ATOMIC);
+                if (notif) {
+                        memcpy(notif, rceb, size);
+                        uwb_rc_notif(rc, notif, size);
+                } else
+                        dev_err(dev, "event 0x%02x/%04x/%02x (%zu bytes): no memory\n",
+                                rceb->bEventType, le16_to_cpu(rceb->wEvent),
+                                rceb->bEventContext, size);
+        } else {
+                neh = uwb_rc_neh_lookup(rc, rceb);
+                if (neh)
+                        uwb_rc_neh_cb(neh, rceb, size);
+                else
+                        dev_warn(dev, "event 0x%02x/%04x/%02x (%zu bytes): nobody cared\n",
+                                 rceb->bEventType, le16_to_cpu(rceb->wEvent),
+                                 rceb->bEventContext, size);
+        }
+}
+
+/**
+ * Given a buffer with one or more UWB RC events/notifications, break
+ * them up and dispatch them.
+ *
+ * @rc:       UWB Radio Controller
+ * @buf:      Buffer with the stream of notifications/events
+ * @buf_size: Amount of data in the buffer
+ *
+ * Note each notification/event starts always with a 'struct
+ * uwb_rceb', so the minimum size if 4 bytes.
+ *
+ * The device may pass us events formatted differently than expected.
+ * These are first filtered, potentially creating a new event in a new
+ * memory location. If a new event is created by the filter it is also
+ * freed here.
+ *
+ * For each notif/event, tries to guess the size looking at the EST
+ * tables, then looks for a neh that is waiting for that event and if
+ * found, copies the payload to the neh's buffer and calls it back. If
+ * not, the data is ignored.
+ *
+ * Note that if we can't find a size description in the EST tables, we
+ * still might find a size in the 'neh' handle in uwb_rc_neh_lookup().
+ *
+ * Assumptions:
+ *
+ *   @rc->neh_lock is NOT taken
+ *
+ * We keep track of various sizes here:
+ * size:      contains the size of the buffer that is processed for the
+ *            incoming event. this buffer may contain events that are not
+ *            formatted as WHCI.
+ * real_size: the actual space taken by this event in the buffer.
+ *            We need to keep track of the real size of an event to be able to
+ *            advance the buffer correctly.
+ * event_size: the size of the event as expected by the core layer
+ *            [OR] the size of the event after filtering. if the filtering
+ *            created a new event in a new memory location then this is
+ *            effectively the size of a new event buffer
+ */
+void uwb_rc_neh_grok(struct uwb_rc *rc, void *buf, size_t buf_size)
+{
+        struct device *dev = &rc->uwb_dev.dev;
+        void *itr;
+        struct uwb_rceb *rceb;
+        size_t size, real_size, event_size;
+        int needtofree;
+
+        d_fnstart(3, dev, "(rc %p buf %p %zu buf_size)\n", rc, buf, buf_size);
+        d_printf(2, dev, "groking event block: %zu bytes\n", buf_size);
+        itr = buf;
+        size = buf_size;
+        while (size > 0) {
+                if (size < sizeof(*rceb)) {
+                        dev_err(dev, "not enough data in event buffer to "
+                                "process incoming events (%zu left, minimum is "
+                                "%zu)\n", size, sizeof(*rceb));
+                        break;
+                }
+
+                rceb = itr;
+                if (rc->filter_event) {
+                        needtofree = rc->filter_event(rc, &rceb, size,
+                                                      &real_size, &event_size);
+                        if (needtofree < 0 && needtofree != -ENOANO) {
+                                dev_err(dev, "BUG: Unable to filter event "
+                                        "(0x%02x/%04x/%02x) from "
+                                        "device. \n", rceb->bEventType,
+                                        le16_to_cpu(rceb->wEvent),
+                                        rceb->bEventContext);
+                                break;
+                        }
+                } else
+                        needtofree = -ENOANO;
+                /* do real processing if there was no filtering or the
+                 * filtering didn't act */
+                if (needtofree == -ENOANO) {
+                        ssize_t ret = uwb_est_find_size(rc, rceb, size);
+                        if (ret < 0)
+                                break;
+                        if (ret > size) {
+                                dev_err(dev, "BUG: hw sent incomplete event "
+                                        "0x%02x/%04x/%02x (%zd bytes), only got "
+                                        "%zu bytes. We don't handle that.\n",
+                                        rceb->bEventType, le16_to_cpu(rceb->wEvent),
+                                        rceb->bEventContext, ret, size);
+                                break;
+                        }
+                        real_size = event_size = ret;
+                }
+                uwb_rc_neh_grok_event(rc, rceb, event_size);
+
+                if (needtofree == 1)
+                        kfree(rceb);
+
+                itr += real_size;
+                size -= real_size;
+                d_printf(2, dev, "consumed %zd bytes, %zu left\n",
+                         event_size, size);
+        }
+        d_fnend(3, dev, "(rc %p buf %p %zu buf_size) = void\n", rc, buf, buf_size);
+}
+EXPORT_SYMBOL_GPL(uwb_rc_neh_grok);
+
+
+/**
+ * The entity that reads from the device notification/event channel has
+ * detected an error.
+ *
+ * @rc:    UWB Radio Controller
+ * @error: Errno error code
+ *
+ */
+void uwb_rc_neh_error(struct uwb_rc *rc, int error)
+{
+        struct uwb_rc_neh *neh, *next;
+        unsigned long flags;
+
+        BUG_ON(error >= 0);
+        spin_lock_irqsave(&rc->neh_lock, flags);
+        list_for_each_entry_safe(neh, next, &rc->neh_list, list_node) {
+                __uwb_rc_neh_rm(rc, neh);
+                uwb_rc_neh_cb(neh, NULL, error);
+        }
+        spin_unlock_irqrestore(&rc->neh_lock, flags);
+}
+EXPORT_SYMBOL_GPL(uwb_rc_neh_error);
+
+
+static void uwb_rc_neh_timer(unsigned long arg)
+{
+        struct uwb_rc_neh *neh = (struct uwb_rc_neh *)arg;
+        struct uwb_rc *rc = neh->rc;
+        unsigned long flags;
+
+        spin_lock_irqsave(&rc->neh_lock, flags);
+        __uwb_rc_neh_rm(rc, neh);
+        spin_unlock_irqrestore(&rc->neh_lock, flags);
+
+        uwb_rc_neh_cb(neh, NULL, -ETIMEDOUT);
+}
+
+/** Initializes the @rc's neh subsystem
+ */
+void uwb_rc_neh_create(struct uwb_rc *rc)
+{
+        spin_lock_init(&rc->neh_lock);
+        INIT_LIST_HEAD(&rc->neh_list);
+        set_bit(0, rc->ctx_bm);         /* 0 is reserved (see [WUSB] table 8-65) */
+        set_bit(0xff, rc->ctx_bm);      /* and 0xff is invalid */
+        rc->ctx_roll = 1;
+}
+
+
+/** Release's the @rc's neh subsystem */
+void uwb_rc_neh_destroy(struct uwb_rc *rc)
+{
+        unsigned long flags;
+        struct uwb_rc_neh *neh, *next;
+
+        spin_lock_irqsave(&rc->neh_lock, flags);
+        list_for_each_entry_safe(neh, next, &rc->neh_list, list_node) {
+                __uwb_rc_neh_rm(rc, neh);
+                uwb_rc_neh_put(neh);
+        }
+        spin_unlock_irqrestore(&rc->neh_lock, flags);
+}
diff --git a/drivers/uwb/pal.c b/drivers/uwb/pal.c
new file mode 100644
index 000000000000..1afb38eacb9a
--- /dev/null
+++ b/drivers/uwb/pal.c
@@ -0,0 +1,91 @@
+/*
+ * UWB PAL support.
+ *
+ * Copyright (C) 2008 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/kernel.h>
+#include <linux/uwb.h>
+
+#include "uwb-internal.h"
+
+/**
+ * uwb_pal_init - initialize a UWB PAL
+ * @pal: the PAL to initialize
+ */
+void uwb_pal_init(struct uwb_pal *pal)
+{
+        INIT_LIST_HEAD(&pal->node);
+}
+EXPORT_SYMBOL_GPL(uwb_pal_init);
+
+/**
+ * uwb_pal_register - register a UWB PAL
+ * @rc: the radio controller the PAL will be using
+ * @pal: the PAL
+ *
+ * The PAL must be initialized with uwb_pal_init().
+ */
+int uwb_pal_register(struct uwb_rc *rc, struct uwb_pal *pal)
+{
+        int ret;
+
+        if (pal->device) {
+                ret = sysfs_create_link(&pal->device->kobj,
+                                        &rc->uwb_dev.dev.kobj, "uwb_rc");
+                if (ret < 0)
+                        return ret;
+                ret = sysfs_create_link(&rc->uwb_dev.dev.kobj,
+                                        &pal->device->kobj, pal->name);
+                if (ret < 0) {
+                        sysfs_remove_link(&pal->device->kobj, "uwb_rc");
+                        return ret;
+                }
+        }
+
+        spin_lock(&rc->pal_lock);
+        list_add(&pal->node, &rc->pals);
+        spin_unlock(&rc->pal_lock);
+
+        return 0;
+}
+EXPORT_SYMBOL_GPL(uwb_pal_register);
+
+/**
+ * uwb_pal_register - unregister a UWB PAL
+ * @rc: the radio controller the PAL was using
+ * @pal: the PAL
+ */
+void uwb_pal_unregister(struct uwb_rc *rc, struct uwb_pal *pal)
+{
+        spin_lock(&rc->pal_lock);
+        list_del(&pal->node);
+        spin_unlock(&rc->pal_lock);
+
+        if (pal->device) {
+                sysfs_remove_link(&rc->uwb_dev.dev.kobj, pal->name);
+                sysfs_remove_link(&pal->device->kobj, "uwb_rc");
+        }
+}
+EXPORT_SYMBOL_GPL(uwb_pal_unregister);
+
+/**
+ * uwb_rc_pal_init - initialize the PAL related parts of a radio controller
+ * @rc: the radio controller
+ */
+void uwb_rc_pal_init(struct uwb_rc *rc)
+{
+        spin_lock_init(&rc->pal_lock);
+        INIT_LIST_HEAD(&rc->pals);
+}
diff --git a/drivers/uwb/reset.c b/drivers/uwb/reset.c
new file mode 100644
index 000000000000..8de856fa7958
--- /dev/null
+++ b/drivers/uwb/reset.c
@@ -0,0 +1,362 @@
+/*
+ * Ultra Wide Band
+ * UWB basic command support and radio reset
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME:
+ *
+ *  - docs
+ *
+ *  - Now we are serializing (using the uwb_dev->mutex) the command
+ *    execution; it should be parallelized as much as possible some
+ *    day.
+ */
+#include <linux/kernel.h>
+#include <linux/err.h>
+
+#include "uwb-internal.h"
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+/**
+ * Command result codes (WUSB1.0[T8-69])
+ */
+static
+const char *__strerror[] = {
+        "success",
+        "failure",
+        "hardware failure",
+        "no more slots",
+        "beacon is too large",
+        "invalid parameter",
+        "unsupported power level",
+        "time out (wa) or invalid ie data (whci)",
+        "beacon size exceeded",
+        "cancelled",
+        "invalid state",
+        "invalid size",
+        "ack not recieved",
+        "no more asie notification",
+};
+
+
+/** Return a string matching the given error code */
+const char *uwb_rc_strerror(unsigned code)
+{
+        if (code == 255)
+                return "time out";
+        if (code >= ARRAY_SIZE(__strerror))
+                return "unknown error";
+        return __strerror[code];
+}
+
+int uwb_rc_cmd_async(struct uwb_rc *rc, const char *cmd_name,
+                     struct uwb_rccb *cmd, size_t cmd_size,
+                     u8 expected_type, u16 expected_event,
+                     uwb_rc_cmd_cb_f cb, void *arg)
+{
+        struct device *dev = &rc->uwb_dev.dev;
+        struct uwb_rc_neh *neh;
+        int needtofree = 0;
+        int result;
+
+        uwb_dev_lock(&rc->uwb_dev);     /* Protect against rc->priv being removed */
+        if (rc->priv == NULL) {
+                uwb_dev_unlock(&rc->uwb_dev);
+                return -ESHUTDOWN;
+        }
+
+        if (rc->filter_cmd) {
+                needtofree = rc->filter_cmd(rc, &cmd, &cmd_size);
+                if (needtofree < 0 && needtofree != -ENOANO) {
+                        dev_err(dev, "%s: filter error: %d\n",
+                                cmd_name, needtofree);
+                        uwb_dev_unlock(&rc->uwb_dev);
+                        return needtofree;
+                }
+        }
+
+        neh = uwb_rc_neh_add(rc, cmd, expected_type, expected_event, cb, arg);
+        if (IS_ERR(neh)) {
+                result = PTR_ERR(neh);
+                goto out;
+        }
+
+        result = rc->cmd(rc, cmd, cmd_size);
+        uwb_dev_unlock(&rc->uwb_dev);
+        if (result < 0)
+                uwb_rc_neh_rm(rc, neh);
+        else
+                uwb_rc_neh_arm(rc, neh);
+        uwb_rc_neh_put(neh);
+out:
+        if (needtofree == 1)
+                kfree(cmd);
+        return result < 0 ? result : 0;
+}
+EXPORT_SYMBOL_GPL(uwb_rc_cmd_async);
+
+struct uwb_rc_cmd_done_params {
+        struct completion completion;
+        struct uwb_rceb *reply;
+        ssize_t reply_size;
+};
+
+static void uwb_rc_cmd_done(struct uwb_rc *rc, void *arg,
+                            struct uwb_rceb *reply, ssize_t reply_size)
+{
+        struct uwb_rc_cmd_done_params *p = (struct uwb_rc_cmd_done_params *)arg;
+
+        if (reply_size > 0) {
+                if (p->reply)
+                        reply_size = min(p->reply_size, reply_size);
+                else
+                        p->reply = kmalloc(reply_size, GFP_ATOMIC);
+
+                if (p->reply)
+                        memcpy(p->reply, reply, reply_size);
+                else
+                        reply_size = -ENOMEM;
+        }
+        p->reply_size = reply_size;
+        complete(&p->completion);
+}
+
+
+/**
+ * Generic function for issuing commands to the Radio Control Interface
+ *
+ * @rc:       UWB Radio Control descriptor
+ * @cmd_name: Name of the command being issued (for error messages)
+ * @cmd:      Pointer to rccb structure containing the command;
+ *            normally you embed this structure as the first member of
+ *            the full command structure.
+ * @cmd_size: Size of the whole command buffer pointed to by @cmd.
+ * @reply:    Pointer to where to store the reply
+ * @reply_size: @reply's size
+ * @expected_type: Expected type in the return event
+ * @expected_event: Expected event code in the return event
+ * @preply:   Here a pointer to where the event data is received will
+ *            be stored. Once done with the data, free with kfree().
+ *
+ * This function is generic; it works for commands that return a fixed
+ * and known size or for commands that return a variable amount of data.
+ *
+ * If a buffer is provided, that is used, although it could be chopped
+ * to the maximum size of the buffer. If the buffer is NULL, then one
+ * be allocated in *preply with the whole contents of the reply.
+ *
+ * @rc needs to be referenced
+ */
+static
+ssize_t __uwb_rc_cmd(struct uwb_rc *rc, const char *cmd_name,
+                     struct uwb_rccb *cmd, size_t cmd_size,
+                     struct uwb_rceb *reply, size_t reply_size,
+                     u8 expected_type, u16 expected_event,
+                     struct uwb_rceb **preply)
+{
+        ssize_t result = 0;
+        struct device *dev = &rc->uwb_dev.dev;
+        struct uwb_rc_cmd_done_params params;
+
+        init_completion(&params.completion);
+        params.reply = reply;
+        params.reply_size = reply_size;
+
+        result = uwb_rc_cmd_async(rc, cmd_name, cmd, cmd_size,
+                                  expected_type, expected_event,
+                                  uwb_rc_cmd_done, &params);
+        if (result)
+                return result;
+
+        wait_for_completion(&params.completion);
+
+        if (preply)
+                *preply = params.reply;
+
+        if (params.reply_size < 0)
+                dev_err(dev, "%s: confirmation event 0x%02x/%04x/%02x "
+                        "reception failed: %d\n", cmd_name,
+                        expected_type, expected_event, cmd->bCommandContext,
+                        (int)params.reply_size);
+        return params.reply_size;
+}
+
+
+/**
+ * Generic function for issuing commands to the Radio Control Interface
+ *
+ * @rc:       UWB Radio Control descriptor
+ * @cmd_name: Name of the command being issued (for error messages)
+ * @cmd:      Pointer to rccb structure containing the command;
+ *            normally you embed this structure as the first member of
+ *            the full command structure.
+ * @cmd_size: Size of the whole command buffer pointed to by @cmd.
+ * @reply:    Pointer to the beginning of the confirmation event
+ *            buffer. Normally bigger than an 'struct hwarc_rceb'.
+ *            You need to fill out reply->bEventType and reply->wEvent (in
+ *            cpu order) as the function will use them to verify the
+ *            confirmation event.
+ * @reply_size: Size of the reply buffer
+ *
+ * The function checks that the length returned in the reply is at
+ * least as big as @reply_size; if not, it will be deemed an error and
+ * -EIO returned.
+ *
+ * @rc needs to be referenced
+ */
+ssize_t uwb_rc_cmd(struct uwb_rc *rc, const char *cmd_name,
+                   struct uwb_rccb *cmd, size_t cmd_size,
+                   struct uwb_rceb *reply, size_t reply_size)
+{
+        struct device *dev = &rc->uwb_dev.dev;
+        ssize_t result;
+
+        result = __uwb_rc_cmd(rc, cmd_name,
+                              cmd, cmd_size, reply, reply_size,
+                              reply->bEventType, reply->wEvent, NULL);
+
+        if (result > 0 && result < reply_size) {
+                dev_err(dev, "%s: not enough data returned for decoding reply "
+                        "(%zu bytes received vs at least %zu needed)\n",
+                        cmd_name, result, reply_size);
+                result = -EIO;
+        }
+        return result;
+}
+EXPORT_SYMBOL_GPL(uwb_rc_cmd);
+
+
+/**
+ * Generic function for issuing commands to the Radio Control
+ * Interface that return an unknown amount of data
+ *
+ * @rc:       UWB Radio Control descriptor
+ * @cmd_name: Name of the command being issued (for error messages)
+ * @cmd:      Pointer to rccb structure containing the command;
+ *            normally you embed this structure as the first member of
+ *            the full command structure.
+ * @cmd_size: Size of the whole command buffer pointed to by @cmd.
+ * @expected_type: Expected type in the return event
+ * @expected_event: Expected event code in the return event
+ * @preply:   Here a pointer to where the event data is received will
+ *            be stored. Once done with the data, free with kfree().
+ *
+ * The function checks that the length returned in the reply is at
+ * least as big as a 'struct uwb_rceb *'; if not, it will be deemed an
+ * error and -EIO returned.
+ *
+ * @rc needs to be referenced
+ */
+ssize_t uwb_rc_vcmd(struct uwb_rc *rc, const char *cmd_name,
+                    struct uwb_rccb *cmd, size_t cmd_size,
+                    u8 expected_type, u16 expected_event,
+                    struct uwb_rceb **preply)
+{
+        return __uwb_rc_cmd(rc, cmd_name, cmd, cmd_size, NULL, 0,
+                            expected_type, expected_event, preply);
+}
+EXPORT_SYMBOL_GPL(uwb_rc_vcmd);
+
+
+/**
+ * Reset a UWB Host Controller (and all radio settings)
+ *
+ * @rc:      Host Controller descriptor
+ * @returns: 0 if ok, < 0 errno code on error
+ *
+ * We put the command on kmalloc'ed memory as some arches cannot do
+ * USB from the stack. The reply event is copied from an stage buffer,
+ * so it can be in the stack. See WUSB1.0[8.6.2.4] for more details.
+ */
+int uwb_rc_reset(struct uwb_rc *rc)
+{
+        int result = -ENOMEM;
+        struct uwb_rc_evt_confirm reply;
+        struct uwb_rccb *cmd;
+        size_t cmd_size = sizeof(*cmd);
+
+        mutex_lock(&rc->uwb_dev.mutex);
+        cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+        if (cmd == NULL)
+                goto error_kzalloc;
+        cmd->bCommandType = UWB_RC_CET_GENERAL;
+        cmd->wCommand = cpu_to_le16(UWB_RC_CMD_RESET);
+        reply.rceb.bEventType = UWB_RC_CET_GENERAL;
+        reply.rceb.wEvent = UWB_RC_CMD_RESET;
+        result = uwb_rc_cmd(rc, "RESET", cmd, cmd_size,
+                            &reply.rceb, sizeof(reply));
+        if (result < 0)
+                goto error_cmd;
+        if (reply.bResultCode != UWB_RC_RES_SUCCESS) {
+                dev_err(&rc->uwb_dev.dev,
+                        "RESET: command execution failed: %s (%d)\n",
+                        uwb_rc_strerror(reply.bResultCode), reply.bResultCode);
+                result = -EIO;
+        }
+error_cmd:
+        kfree(cmd);
+error_kzalloc:
+        mutex_unlock(&rc->uwb_dev.mutex);
+        return result;
+}
+
+int uwbd_msg_handle_reset(struct uwb_event *evt)
+{
+        struct uwb_rc *rc = evt->rc;
+        int ret;
+
+        /* Need to prevent the RC hardware module going away while in
+           the rc->reset() call. */
+        if (!try_module_get(rc->owner))
+                return 0;
+
+        dev_info(&rc->uwb_dev.dev, "resetting radio controller\n");
+        ret = rc->reset(rc);
+        if (ret)
+                dev_err(&rc->uwb_dev.dev, "failed to reset hardware: %d\n", ret);
+
+        module_put(rc->owner);
+        return ret;
+}
+
+/**
+ * uwb_rc_reset_all - request a reset of the radio controller and PALs
+ * @rc: the radio controller of the hardware device to be reset.
+ *
+ * The full hardware reset of the radio controller and all the PALs
+ * will be scheduled.
+ */
+void uwb_rc_reset_all(struct uwb_rc *rc)
+{
+        struct uwb_event *evt;
+
+        evt = kzalloc(sizeof(struct uwb_event), GFP_ATOMIC);
+        if (unlikely(evt == NULL))
+                return;
+
+        evt->rc = __uwb_rc_get(rc);     /* will be put by uwbd's uwbd_event_handle() */
+        evt->ts_jiffies = jiffies;
+        evt->type = UWB_EVT_TYPE_MSG;
+        evt->message = UWB_EVT_MSG_RESET;
+
+        uwbd_event_queue(evt);
+}
+EXPORT_SYMBOL_GPL(uwb_rc_reset_all);
diff --git a/drivers/uwb/rsv.c b/drivers/uwb/rsv.c
new file mode 100644
index 000000000000..bae16204576d
--- /dev/null
+++ b/drivers/uwb/rsv.c
@@ -0,0 +1,680 @@
+/*
+ * UWB reservation management.
+ *
+ * Copyright (C) 2008 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/version.h>
+#include <linux/kernel.h>
+#include <linux/uwb.h>
+
+#include "uwb-internal.h"
+
+static void uwb_rsv_timer(unsigned long arg);
+
+static const char *rsv_states[] = {
+        [UWB_RSV_STATE_NONE]          = "none",
+        [UWB_RSV_STATE_O_INITIATED]   = "initiated",
+        [UWB_RSV_STATE_O_PENDING]     = "pending",
+        [UWB_RSV_STATE_O_MODIFIED]    = "modified",
+        [UWB_RSV_STATE_O_ESTABLISHED] = "established",
+        [UWB_RSV_STATE_T_ACCEPTED]    = "accepted",
+        [UWB_RSV_STATE_T_DENIED]      = "denied",
+        [UWB_RSV_STATE_T_PENDING]     = "pending",
+};
+
+static const char *rsv_types[] = {
+        [UWB_DRP_TYPE_ALIEN_BP] = "alien-bp",
+        [UWB_DRP_TYPE_HARD]     = "hard",
+        [UWB_DRP_TYPE_SOFT]     = "soft",
+        [UWB_DRP_TYPE_PRIVATE]  = "private",
+        [UWB_DRP_TYPE_PCA]      = "pca",
+};
+
+/**
+ * uwb_rsv_state_str - return a string for a reservation state
+ * @state: the reservation state.
+ */
+const char *uwb_rsv_state_str(enum uwb_rsv_state state)
+{
+        if (state < UWB_RSV_STATE_NONE || state >= UWB_RSV_STATE_LAST)
+                return "unknown";
+        return rsv_states[state];
+}
+EXPORT_SYMBOL_GPL(uwb_rsv_state_str);
+
+/**
+ * uwb_rsv_type_str - return a string for a reservation type
+ * @type: the reservation type
+ */
+const char *uwb_rsv_type_str(enum uwb_drp_type type)
+{
+        if (type < UWB_DRP_TYPE_ALIEN_BP || type > UWB_DRP_TYPE_PCA)
+                return "invalid";
+        return rsv_types[type];
+}
+EXPORT_SYMBOL_GPL(uwb_rsv_type_str);
+
+static void uwb_rsv_dump(struct uwb_rsv *rsv)
+{
+        struct device *dev = &rsv->rc->uwb_dev.dev;
+        struct uwb_dev_addr devaddr;
+        char owner[UWB_ADDR_STRSIZE], target[UWB_ADDR_STRSIZE];
+
+        uwb_dev_addr_print(owner, sizeof(owner), &rsv->owner->dev_addr);
+        if (rsv->target.type == UWB_RSV_TARGET_DEV)
+                devaddr = rsv->target.dev->dev_addr;
+        else
+                devaddr = rsv->target.devaddr;
+        uwb_dev_addr_print(target, sizeof(target), &devaddr);
+
+        dev_dbg(dev, "rsv %s -> %s: %s\n", owner, target, uwb_rsv_state_str(rsv->state));
+}
+
+/*
+ * Get a free stream index for a reservation.
+ *
+ * If the target is a DevAddr (e.g., a WUSB cluster reservation) then
+ * the stream is allocated from a pool of per-RC stream indexes,
+ * otherwise a unique stream index for the target is selected.
+ */
+static int uwb_rsv_get_stream(struct uwb_rsv *rsv)
+{
+        struct uwb_rc *rc = rsv->rc;
+        unsigned long *streams_bm;
+        int stream;
+
+        switch (rsv->target.type) {
+        case UWB_RSV_TARGET_DEV:
+                streams_bm = rsv->target.dev->streams;
+                break;
+        case UWB_RSV_TARGET_DEVADDR:
+                streams_bm = rc->uwb_dev.streams;
+                break;
+        default:
+                return -EINVAL;
+        }
+
+        stream = find_first_zero_bit(streams_bm, UWB_NUM_STREAMS);
+        if (stream >= UWB_NUM_STREAMS)
+                return -EBUSY;
+
+        rsv->stream = stream;
+        set_bit(stream, streams_bm);
+
+        return 0;
+}
+
+static void uwb_rsv_put_stream(struct uwb_rsv *rsv)
+{
+        struct uwb_rc *rc = rsv->rc;
+        unsigned long *streams_bm;
+
+        switch (rsv->target.type) {
+        case UWB_RSV_TARGET_DEV:
+                streams_bm = rsv->target.dev->streams;
+                break;
+        case UWB_RSV_TARGET_DEVADDR:
+                streams_bm = rc->uwb_dev.streams;
+                break;
+        default:
+                return;
+        }
+
+        clear_bit(rsv->stream, streams_bm);
+}
+
+/*
+ * Generate a MAS allocation with a single row component.
+ */
+static void uwb_rsv_gen_alloc_row(struct uwb_mas_bm *mas,
+                                  int first_mas, int mas_per_zone,
+                                  int zs, int ze)
+{
+        struct uwb_mas_bm col;
+        int z;
+
+        bitmap_zero(mas->bm, UWB_NUM_MAS);
+        bitmap_zero(col.bm, UWB_NUM_MAS);
+        bitmap_fill(col.bm, mas_per_zone);
+        bitmap_shift_left(col.bm, col.bm, first_mas + zs * UWB_MAS_PER_ZONE, UWB_NUM_MAS);
+
+        for (z = zs; z <= ze; z++) {
+                bitmap_or(mas->bm, mas->bm, col.bm, UWB_NUM_MAS);
+                bitmap_shift_left(col.bm, col.bm, UWB_MAS_PER_ZONE, UWB_NUM_MAS);
+        }
+}
+
+/*
+ * Allocate some MAS for this reservation based on current local
+ * availability, the reservation parameters (max_mas, min_mas,
+ * sparsity), and the WiMedia rules for MAS allocations.
+ *
+ * Returns -EBUSY is insufficient free MAS are available.
+ *
+ * FIXME: to simplify this, only safe reservations with a single row
+ * component in zones 1 to 15 are tried (zone 0 is skipped to avoid
+ * problems with the MAS reserved for the BP).
+ *
+ * [ECMA-368] section B.2.
+ */
+static int uwb_rsv_alloc_mas(struct uwb_rsv *rsv)
+{
+        static const int safe_mas_in_row[UWB_NUM_ZONES] = {
+                8, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1,
+        };
+        int n, r;
+        struct uwb_mas_bm mas;
+        bool found = false;
+
+        /*
+         * Search all valid safe allocations until either: too few MAS
+         * are available; or the smallest allocation with sufficient
+         * MAS is found.
+         *
+         * The top of the zones are preferred, so space for larger
+         * allocations is available in the bottom of the zone (e.g., a
+         * 15 MAS allocation should start in row 14 leaving space for
+         * a 120 MAS allocation at row 0).
+         */
+        for (n = safe_mas_in_row[0]; n >= 1; n--) {
+                int num_mas;
+
+                num_mas = n * (UWB_NUM_ZONES - 1);
+                if (num_mas < rsv->min_mas)
+                        break;
+                if (found && num_mas < rsv->max_mas)
+                        break;
+
+                for (r = UWB_MAS_PER_ZONE-1;  r >= 0; r--) {
+                        if (safe_mas_in_row[r] < n)
+                                continue;
+                        uwb_rsv_gen_alloc_row(&mas, r, n, 1, UWB_NUM_ZONES);
+                        if (uwb_drp_avail_reserve_pending(rsv->rc, &mas) == 0) {
+                                found = true;
+                                break;
+                        }
+                }
+        }
+
+        if (!found)
+                return -EBUSY;
+
+        bitmap_copy(rsv->mas.bm, mas.bm, UWB_NUM_MAS);
+        return 0;
+}
+
+static void uwb_rsv_stroke_timer(struct uwb_rsv *rsv)
+{
+        int sframes = UWB_MAX_LOST_BEACONS;
+
+        /*
+         * Multicast reservations can become established within 1
+         * super frame and should not be terminated if no response is
+         * received.
+         */
+        if (rsv->is_multicast) {
+                if (rsv->state == UWB_RSV_STATE_O_INITIATED)
+                        sframes = 1;
+                if (rsv->state == UWB_RSV_STATE_O_ESTABLISHED)
+                        sframes = 0;
+        }
+
+        rsv->expired = false;
+        if (sframes > 0) {
+                /*
+                 * Add an additional 2 superframes to account for the
+                 * time to send the SET DRP IE command.
+                 */
+                unsigned timeout_us = (sframes + 2) * UWB_SUPERFRAME_LENGTH_US;
+                mod_timer(&rsv->timer, jiffies + usecs_to_jiffies(timeout_us));
+        } else
+                del_timer(&rsv->timer);
+}
+
+/*
+ * Update a reservations state, and schedule an update of the
+ * transmitted DRP IEs.
+ */
+static void uwb_rsv_state_update(struct uwb_rsv *rsv,
+                                 enum uwb_rsv_state new_state)
+{
+        rsv->state = new_state;
+        rsv->ie_valid = false;
+
+        uwb_rsv_dump(rsv);
+
+        uwb_rsv_stroke_timer(rsv);
+        uwb_rsv_sched_update(rsv->rc);
+}
+
+static void uwb_rsv_callback(struct uwb_rsv *rsv)
+{
+        if (rsv->callback)
+                rsv->callback(rsv);
+}
+
+void uwb_rsv_set_state(struct uwb_rsv *rsv, enum uwb_rsv_state new_state)
+{
+        if (rsv->state == new_state) {
+                switch (rsv->state) {
+                case UWB_RSV_STATE_O_ESTABLISHED:
+                case UWB_RSV_STATE_T_ACCEPTED:
+                case UWB_RSV_STATE_NONE:
+                        uwb_rsv_stroke_timer(rsv);
+                        break;
+                default:
+                        /* Expecting a state transition so leave timer
+                           as-is. */
+                        break;
+                }
+                return;
+        }
+
+        switch (new_state) {
+        case UWB_RSV_STATE_NONE:
+                uwb_drp_avail_release(rsv->rc, &rsv->mas);
+                uwb_rsv_put_stream(rsv);
+                uwb_rsv_state_update(rsv, UWB_RSV_STATE_NONE);
+                uwb_rsv_callback(rsv);
+                break;
+        case UWB_RSV_STATE_O_INITIATED:
+                uwb_rsv_state_update(rsv, UWB_RSV_STATE_O_INITIATED);
+                break;
+        case UWB_RSV_STATE_O_PENDING:
+                uwb_rsv_state_update(rsv, UWB_RSV_STATE_O_PENDING);
+                break;
+        case UWB_RSV_STATE_O_ESTABLISHED:
+                uwb_drp_avail_reserve(rsv->rc, &rsv->mas);
+                uwb_rsv_state_update(rsv, UWB_RSV_STATE_O_ESTABLISHED);
+                uwb_rsv_callback(rsv);
+                break;
+        case UWB_RSV_STATE_T_ACCEPTED:
+                uwb_drp_avail_reserve(rsv->rc, &rsv->mas);
+                uwb_rsv_state_update(rsv, UWB_RSV_STATE_T_ACCEPTED);
+                uwb_rsv_callback(rsv);
+                break;
+        case UWB_RSV_STATE_T_DENIED:
+                uwb_rsv_state_update(rsv, UWB_RSV_STATE_T_DENIED);
+                break;
+        default:
+                dev_err(&rsv->rc->uwb_dev.dev, "unhandled state: %s (%d)\n",
+                        uwb_rsv_state_str(new_state), new_state);
+        }
+}
+
+static struct uwb_rsv *uwb_rsv_alloc(struct uwb_rc *rc)
+{
+        struct uwb_rsv *rsv;
+
+        rsv = kzalloc(sizeof(struct uwb_rsv), GFP_KERNEL);
+        if (!rsv)
+                return NULL;
+
+        INIT_LIST_HEAD(&rsv->rc_node);
+        INIT_LIST_HEAD(&rsv->pal_node);
+        init_timer(&rsv->timer);
+        rsv->timer.function = uwb_rsv_timer;
+        rsv->timer.data     = (unsigned long)rsv;
+
+        rsv->rc = rc;
+
+        return rsv;
+}
+
+static void uwb_rsv_free(struct uwb_rsv *rsv)
+{
+        uwb_dev_put(rsv->owner);
+        if (rsv->target.type == UWB_RSV_TARGET_DEV)
+                uwb_dev_put(rsv->target.dev);
+        kfree(rsv);
+}
+
+/**
+ * uwb_rsv_create - allocate and initialize a UWB reservation structure
+ * @rc: the radio controller
+ * @cb: callback to use when the reservation completes or terminates
+ * @pal_priv: data private to the PAL to be passed in the callback
+ *
+ * The callback is called when the state of the reservation changes from:
+ *
+ *   - pending to accepted
+ *   - pending to denined
+ *   - accepted to terminated
+ *   - pending to terminated
+ */
+struct uwb_rsv *uwb_rsv_create(struct uwb_rc *rc, uwb_rsv_cb_f cb, void *pal_priv)
+{
+        struct uwb_rsv *rsv;
+
+        rsv = uwb_rsv_alloc(rc);
+        if (!rsv)
+                return NULL;
+
+        rsv->callback = cb;
+        rsv->pal_priv = pal_priv;
+
+        return rsv;
+}
+EXPORT_SYMBOL_GPL(uwb_rsv_create);
+
+void uwb_rsv_remove(struct uwb_rsv *rsv)
+{
+        if (rsv->state != UWB_RSV_STATE_NONE)
+                uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE);
+        del_timer_sync(&rsv->timer);
+        list_del(&rsv->rc_node);
+        uwb_rsv_free(rsv);
+}
+
+/**
+ * uwb_rsv_destroy - free a UWB reservation structure
+ * @rsv: the reservation to free
+ *
+ * The reservation will be terminated if it is pending or established.
+ */
+void uwb_rsv_destroy(struct uwb_rsv *rsv)
+{
+        struct uwb_rc *rc = rsv->rc;
+
+        mutex_lock(&rc->rsvs_mutex);
+        uwb_rsv_remove(rsv);
+        mutex_unlock(&rc->rsvs_mutex);
+}
+EXPORT_SYMBOL_GPL(uwb_rsv_destroy);
+
+/**
+ * usb_rsv_establish - start a reservation establishment
+ * @rsv: the reservation
+ *
+ * The PAL should fill in @rsv's owner, target, type, max_mas,
+ * min_mas, sparsity and is_multicast fields.  If the target is a
+ * uwb_dev it must be referenced.
+ *
+ * The reservation's callback will be called when the reservation is
+ * accepted, denied or times out.
+ */
+int uwb_rsv_establish(struct uwb_rsv *rsv)
+{
+        struct uwb_rc *rc = rsv->rc;
+        int ret;
+
+        mutex_lock(&rc->rsvs_mutex);
+
+        ret = uwb_rsv_get_stream(rsv);
+        if (ret)
+                goto out;
+
+        ret = uwb_rsv_alloc_mas(rsv);
+        if (ret) {
+                uwb_rsv_put_stream(rsv);
+                goto out;
+        }
+
+        list_add_tail(&rsv->rc_node, &rc->reservations);
+        rsv->owner = &rc->uwb_dev;
+        uwb_dev_get(rsv->owner);
+        uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_INITIATED);
+out:
+        mutex_unlock(&rc->rsvs_mutex);
+        return ret;
+}
+EXPORT_SYMBOL_GPL(uwb_rsv_establish);
+
+/**
+ * uwb_rsv_modify - modify an already established reservation
+ * @rsv: the reservation to modify
+ * @max_mas: new maximum MAS to reserve
+ * @min_mas: new minimum MAS to reserve
+ * @sparsity: new sparsity to use
+ *
+ * FIXME: implement this once there are PALs that use it.
+ */
+int uwb_rsv_modify(struct uwb_rsv *rsv, int max_mas, int min_mas, int sparsity)
+{
+        return -ENOSYS;
+}
+EXPORT_SYMBOL_GPL(uwb_rsv_modify);
+
+/**
+ * uwb_rsv_terminate - terminate an established reservation
+ * @rsv: the reservation to terminate
+ *
+ * A reservation is terminated by removing the DRP IE from the beacon,
+ * the other end will consider the reservation to be terminated when
+ * it does not see the DRP IE for at least mMaxLostBeacons.
+ *
+ * If applicable, the reference to the target uwb_dev will be released.
+ */
+void uwb_rsv_terminate(struct uwb_rsv *rsv)
+{
+        struct uwb_rc *rc = rsv->rc;
+
+        mutex_lock(&rc->rsvs_mutex);
+
+        uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE);
+
+        mutex_unlock(&rc->rsvs_mutex);
+}
+EXPORT_SYMBOL_GPL(uwb_rsv_terminate);
+
+/**
+ * uwb_rsv_accept - accept a new reservation from a peer
+ * @rsv:      the reservation
+ * @cb:       call back for reservation changes
+ * @pal_priv: data to be passed in the above call back
+ *
+ * Reservation requests from peers are denied unless a PAL accepts it
+ * by calling this function.
+ */
+void uwb_rsv_accept(struct uwb_rsv *rsv, uwb_rsv_cb_f cb, void *pal_priv)
+{
+        rsv->callback = cb;
+        rsv->pal_priv = pal_priv;
+        rsv->state    = UWB_RSV_STATE_T_ACCEPTED;
+}
+EXPORT_SYMBOL_GPL(uwb_rsv_accept);
+
+/*
+ * Is a received DRP IE for this reservation?
+ */
+static bool uwb_rsv_match(struct uwb_rsv *rsv, struct uwb_dev *src,
+                          struct uwb_ie_drp *drp_ie)
+{
+        struct uwb_dev_addr *rsv_src;
+        int stream;
+
+        stream = uwb_ie_drp_stream_index(drp_ie);
+
+        if (rsv->stream != stream)
+                return false;
+
+        switch (rsv->target.type) {
+        case UWB_RSV_TARGET_DEVADDR:
+                return rsv->stream == stream;
+        case UWB_RSV_TARGET_DEV:
+                if (uwb_ie_drp_owner(drp_ie))
+                        rsv_src = &rsv->owner->dev_addr;
+                else
+                        rsv_src = &rsv->target.dev->dev_addr;
+                return uwb_dev_addr_cmp(&src->dev_addr, rsv_src) == 0;
+        }
+        return false;
+}
+
+static struct uwb_rsv *uwb_rsv_new_target(struct uwb_rc *rc,
+                                          struct uwb_dev *src,
+                                          struct uwb_ie_drp *drp_ie)
+{
+        struct uwb_rsv *rsv;
+        struct uwb_pal *pal;
+        enum uwb_rsv_state state;
+
+        rsv = uwb_rsv_alloc(rc);
+        if (!rsv)
+                return NULL;
+
+        rsv->rc          = rc;
+        rsv->owner       = src;
+        uwb_dev_get(rsv->owner);
+        rsv->target.type = UWB_RSV_TARGET_DEV;
+        rsv->target.dev  = &rc->uwb_dev;
+        rsv->type        = uwb_ie_drp_type(drp_ie);
+        rsv->stream      = uwb_ie_drp_stream_index(drp_ie);
+        set_bit(rsv->stream, rsv->owner->streams);
+        uwb_drp_ie_to_bm(&rsv->mas, drp_ie);
+
+        /*
+         * See if any PALs are interested in this reservation. If not,
+         * deny the request.
+         */
+        rsv->state = UWB_RSV_STATE_T_DENIED;
+        spin_lock(&rc->pal_lock);
+        list_for_each_entry(pal, &rc->pals, node) {
+                if (pal->new_rsv)
+                        pal->new_rsv(rsv);
+                if (rsv->state == UWB_RSV_STATE_T_ACCEPTED)
+                        break;
+        }
+        spin_unlock(&rc->pal_lock);
+
+        list_add_tail(&rsv->rc_node, &rc->reservations);
+        state = rsv->state;
+        rsv->state = UWB_RSV_STATE_NONE;
+        uwb_rsv_set_state(rsv, state);
+
+        return rsv;
+}
+
+/**
+ * uwb_rsv_find - find a reservation for a received DRP IE.
+ * @rc: the radio controller
+ * @src: source of the DRP IE
+ * @drp_ie: the DRP IE
+ *
+ * If the reservation cannot be found and the DRP IE is from a peer
+ * attempting to establish a new reservation, create a new reservation
+ * and add it to the list.
+ */
+struct uwb_rsv *uwb_rsv_find(struct uwb_rc *rc, struct uwb_dev *src,
+                             struct uwb_ie_drp *drp_ie)
+{
+        struct uwb_rsv *rsv;
+
+        list_for_each_entry(rsv, &rc->reservations, rc_node) {
+                if (uwb_rsv_match(rsv, src, drp_ie))
+                        return rsv;
+        }
+
+        if (uwb_ie_drp_owner(drp_ie))
+                return uwb_rsv_new_target(rc, src, drp_ie);
+
+        return NULL;
+}
+
+/*
+ * Go through all the reservations and check for timeouts and (if
+ * necessary) update their DRP IEs.
+ *
+ * FIXME: look at building the SET_DRP_IE command here rather than
+ * having to rescan the list in uwb_rc_send_all_drp_ie().
+ */
+static bool uwb_rsv_update_all(struct uwb_rc *rc)
+{
+        struct uwb_rsv *rsv, *t;
+        bool ie_updated = false;
+
+        list_for_each_entry_safe(rsv, t, &rc->reservations, rc_node) {
+                if (rsv->expired)
+                        uwb_drp_handle_timeout(rsv);
+                if (!rsv->ie_valid) {
+                        uwb_drp_ie_update(rsv);
+                        ie_updated = true;
+                }
+        }
+
+        return ie_updated;
+}
+
+void uwb_rsv_sched_update(struct uwb_rc *rc)
+{
+        queue_work(rc->rsv_workq, &rc->rsv_update_work);
+}
+
+/*
+ * Update DRP IEs and, if necessary, the DRP Availability IE and send
+ * the updated IEs to the radio controller.
+ */
+static void uwb_rsv_update_work(struct work_struct *work)
+{
+        struct uwb_rc *rc = container_of(work, struct uwb_rc, rsv_update_work);
+        bool ie_updated;
+
+        mutex_lock(&rc->rsvs_mutex);
+
+        ie_updated = uwb_rsv_update_all(rc);
+
+        if (!rc->drp_avail.ie_valid) {
+                uwb_drp_avail_ie_update(rc);
+                ie_updated = true;
+        }
+
+        if (ie_updated)
+                uwb_rc_send_all_drp_ie(rc);
+
+        mutex_unlock(&rc->rsvs_mutex);
+}
+
+static void uwb_rsv_timer(unsigned long arg)
+{
+        struct uwb_rsv *rsv = (struct uwb_rsv *)arg;
+
+        rsv->expired = true;
+        uwb_rsv_sched_update(rsv->rc);
+}
+
+void uwb_rsv_init(struct uwb_rc *rc)
+{
+        INIT_LIST_HEAD(&rc->reservations);
+        mutex_init(&rc->rsvs_mutex);
+        INIT_WORK(&rc->rsv_update_work, uwb_rsv_update_work);
+
+        bitmap_complement(rc->uwb_dev.streams, rc->uwb_dev.streams, UWB_NUM_STREAMS);
+}
+
+int uwb_rsv_setup(struct uwb_rc *rc)
+{
+        char name[16];
+
+        snprintf(name, sizeof(name), "%s_rsvd", dev_name(&rc->uwb_dev.dev));
+        rc->rsv_workq = create_singlethread_workqueue(name);
+        if (rc->rsv_workq == NULL)
+                return -ENOMEM;
+
+        return 0;
+}
+
+void uwb_rsv_cleanup(struct uwb_rc *rc)
+{
+        struct uwb_rsv *rsv, *t;
+
+        mutex_lock(&rc->rsvs_mutex);
+        list_for_each_entry_safe(rsv, t, &rc->reservations, rc_node) {
+                uwb_rsv_remove(rsv);
+        }
+        mutex_unlock(&rc->rsvs_mutex);
+
+        cancel_work_sync(&rc->rsv_update_work);
+        destroy_workqueue(rc->rsv_workq);
+}
diff --git a/drivers/uwb/scan.c b/drivers/uwb/scan.c
new file mode 100644
index 000000000000..2d270748f32b
--- /dev/null
+++ b/drivers/uwb/scan.c
@@ -0,0 +1,133 @@
+/*
+ * Ultra Wide Band
+ * Scanning management
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ *
+ * FIXME: docs
+ * FIXME: there are issues here on how BEACON and SCAN on USB RCI deal
+ *        with each other. Currently seems that START_BEACON while
+ *        SCAN_ONLY will cancel the scan, so we need to update the
+ *        state here. Clarification request sent by email on
+ *        10/05/2005.
+ *        10/28/2005 No clear answer heard--maybe we'll hack the API
+ *                   so that when we start beaconing, if the HC is
+ *                   scanning in a mode not compatible with beaconing
+ *                   we just fail.
+ */
+
+#include <linux/device.h>
+#include <linux/err.h>
+#include "uwb-internal.h"
+
+
+/**
+ * Start/stop scanning in a radio controller
+ *
+ * @rc:      UWB Radio Controlller
+ * @channel: Channel to scan; encodings in WUSB1.0[Table 5.12]
+ * @type:    Type of scanning to do.
+ * @bpst_offset: value at which to start scanning (if type ==
+ *                UWB_SCAN_ONLY_STARTTIME)
+ * @returns: 0 if ok, < 0 errno code on error
+ *
+ * We put the command on kmalloc'ed memory as some arches cannot do
+ * USB from the stack. The reply event is copied from an stage buffer,
+ * so it can be in the stack. See WUSB1.0[8.6.2.4] for more details.
+ */
+int uwb_rc_scan(struct uwb_rc *rc,
+                unsigned channel, enum uwb_scan_type type,
+                unsigned bpst_offset)
+{
+        int result;
+        struct uwb_rc_cmd_scan *cmd;
+        struct uwb_rc_evt_confirm reply;
+
+        result = -ENOMEM;
+        cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+        if (cmd == NULL)
+                goto error_kzalloc;
+        mutex_lock(&rc->uwb_dev.mutex);
+        cmd->rccb.bCommandType = UWB_RC_CET_GENERAL;
+        cmd->rccb.wCommand = cpu_to_le16(UWB_RC_CMD_SCAN);
+        cmd->bChannelNumber = channel;
+        cmd->bScanState = type;
+        cmd->wStartTime = cpu_to_le16(bpst_offset);
+        reply.rceb.bEventType = UWB_RC_CET_GENERAL;
+        reply.rceb.wEvent = UWB_RC_CMD_SCAN;
+        result = uwb_rc_cmd(rc, "SCAN", &cmd->rccb, sizeof(*cmd),
+                            &reply.rceb, sizeof(reply));
+        if (result < 0)
+                goto error_cmd;
+        if (reply.bResultCode != UWB_RC_RES_SUCCESS) {
+                dev_err(&rc->uwb_dev.dev,
+                        "SCAN: command execution failed: %s (%d)\n",
+                        uwb_rc_strerror(reply.bResultCode), reply.bResultCode);
+                result = -EIO;
+                goto error_cmd;
+        }
+        rc->scanning = channel;
+        rc->scan_type = type;
+error_cmd:
+        mutex_unlock(&rc->uwb_dev.mutex);
+        kfree(cmd);
+error_kzalloc:
+        return result;
+}
+
+/*
+ * Print scanning state
+ */
+static ssize_t uwb_rc_scan_show(struct device *dev,
+                                struct device_attribute *attr, char *buf)
+{
+        struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+        struct uwb_rc *rc = uwb_dev->rc;
+        ssize_t result;
+
+        mutex_lock(&rc->uwb_dev.mutex);
+        result = sprintf(buf, "%d %d\n", rc->scanning, rc->scan_type);
+        mutex_unlock(&rc->uwb_dev.mutex);
+        return result;
+}
+
+/*
+ *
+ */
+static ssize_t uwb_rc_scan_store(struct device *dev,
+                                 struct device_attribute *attr,
+                                 const char *buf, size_t size)
+{
+        struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+        struct uwb_rc *rc = uwb_dev->rc;
+        unsigned channel;
+        unsigned type;
+        unsigned bpst_offset = 0;
+        ssize_t result = -EINVAL;
+
+        result = sscanf(buf, "%u %u %u\n", &channel, &type, &bpst_offset);
+        if (result >= 2 && type < UWB_SCAN_TOP)
+                result = uwb_rc_scan(rc, channel, type, bpst_offset);
+
+        return result < 0 ? result : size;
+}
+
+/** Radio Control sysfs interface (declaration) */
+DEVICE_ATTR(scan, S_IRUGO | S_IWUSR, uwb_rc_scan_show, uwb_rc_scan_store);
diff --git a/drivers/uwb/umc-bus.c b/drivers/uwb/umc-bus.c
new file mode 100644
index 000000000000..2d8d62d9f53e
--- /dev/null
+++ b/drivers/uwb/umc-bus.c
@@ -0,0 +1,218 @@
+/*
+ * Bus for UWB Multi-interface Controller capabilities.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This file is released under the GNU GPL v2.
+ */
+#include <linux/kernel.h>
+#include <linux/sysfs.h>
+#include <linux/workqueue.h>
+#include <linux/uwb/umc.h>
+#include <linux/pci.h>
+
+static int umc_bus_unbind_helper(struct device *dev, void *data)
+{
+        struct device *parent = data;
+
+        if (dev->parent == parent && dev->driver)
+                device_release_driver(dev);
+        return 0;
+}
+
+/**
+ * umc_controller_reset - reset the whole UMC controller
+ * @umc: the UMC device for the radio controller.
+ *
+ * Drivers will be unbound from all UMC devices belonging to the
+ * controller and then the radio controller will be rebound.  The
+ * radio controller is expected to do a full hardware reset when it is
+ * probed.
+ *
+ * If this is called while a probe() or remove() is in progress it
+ * will return -EAGAIN and not perform the reset.
+ */
+int umc_controller_reset(struct umc_dev *umc)
+{
+        struct device *parent = umc->dev.parent;
+        int ret;
+
+        if (down_trylock(&parent->sem))
+                return -EAGAIN;
+        bus_for_each_dev(&umc_bus_type, NULL, parent, umc_bus_unbind_helper);
+        ret = device_attach(&umc->dev);
+        if (ret == 1)
+                ret = 0;
+        up(&parent->sem);
+
+        return ret;
+}
+EXPORT_SYMBOL_GPL(umc_controller_reset);
+
+/**
+ * umc_match_pci_id - match a UMC driver to a UMC device's parent PCI device.
+ * @umc_drv: umc driver with match_data pointing to a zero-terminated
+ * table of pci_device_id's.
+ * @umc: umc device whose parent is to be matched.
+ */
+int umc_match_pci_id(struct umc_driver *umc_drv, struct umc_dev *umc)
+{
+        const struct pci_device_id *id_table = umc_drv->match_data;
+        struct pci_dev *pci;
+
+        if (umc->dev.parent->bus != &pci_bus_type)
+                return 0;
+
+        pci = to_pci_dev(umc->dev.parent);
+        return pci_match_id(id_table, pci) != NULL;
+}
+EXPORT_SYMBOL_GPL(umc_match_pci_id);
+
+static int umc_bus_rescan_helper(struct device *dev, void *data)
+{
+        int ret = 0;
+
+        if (!dev->driver)
+                ret = device_attach(dev);
+
+        return ret < 0 ? ret : 0;
+}
+
+static void umc_bus_rescan(void)
+{
+        int err;
+
+        /*
+         * We can't use bus_rescan_devices() here as it deadlocks when
+         * it tries to retake the dev->parent semaphore.
+         */
+        err = bus_for_each_dev(&umc_bus_type, NULL, NULL, umc_bus_rescan_helper);
+        if (err < 0)
+                printk(KERN_WARNING "%s: rescan of bus failed: %d\n",
+                       KBUILD_MODNAME, err);
+}
+
+static int umc_bus_match(struct device *dev, struct device_driver *drv)
+{
+        struct umc_dev *umc = to_umc_dev(dev);
+        struct umc_driver *umc_driver = to_umc_driver(drv);
+
+        if (umc->cap_id == umc_driver->cap_id) {
+                if (umc_driver->match)
+                        return umc_driver->match(umc_driver, umc);
+                else
+                        return 1;
+        }
+        return 0;
+}
+
+static int umc_device_probe(struct device *dev)
+{
+        struct umc_dev *umc;
+        struct umc_driver *umc_driver;
+        int err;
+
+        umc_driver = to_umc_driver(dev->driver);
+        umc = to_umc_dev(dev);
+
+        get_device(dev);
+        err = umc_driver->probe(umc);
+        if (err)
+                put_device(dev);
+        else
+                umc_bus_rescan();
+
+        return err;
+}
+
+static int umc_device_remove(struct device *dev)
+{
+        struct umc_dev *umc;
+        struct umc_driver *umc_driver;
+
+        umc_driver = to_umc_driver(dev->driver);
+        umc = to_umc_dev(dev);
+
+        umc_driver->remove(umc);
+        put_device(dev);
+        return 0;
+}
+
+static int umc_device_suspend(struct device *dev, pm_message_t state)
+{
+        struct umc_dev *umc;
+        struct umc_driver *umc_driver;
+        int err = 0;
+
+        umc = to_umc_dev(dev);
+
+        if (dev->driver) {
+                umc_driver = to_umc_driver(dev->driver);
+                if (umc_driver->suspend)
+                        err = umc_driver->suspend(umc, state);
+        }
+        return err;
+}
+
+static int umc_device_resume(struct device *dev)
+{
+        struct umc_dev *umc;
+        struct umc_driver *umc_driver;
+        int err = 0;
+
+        umc = to_umc_dev(dev);
+
+        if (dev->driver) {
+                umc_driver = to_umc_driver(dev->driver);
+                if (umc_driver->resume)
+                        err = umc_driver->resume(umc);
+        }
+        return err;
+}
+
+static ssize_t capability_id_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+        struct umc_dev *umc = to_umc_dev(dev);
+
+        return sprintf(buf, "0x%02x\n", umc->cap_id);
+}
+
+static ssize_t version_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+        struct umc_dev *umc = to_umc_dev(dev);
+
+        return sprintf(buf, "0x%04x\n", umc->version);
+}
+
+static struct device_attribute umc_dev_attrs[] = {
+        __ATTR_RO(capability_id),
+        __ATTR_RO(version),
+        __ATTR_NULL,
+};
+
+struct bus_type umc_bus_type = {
+        .name           = "umc",
+        .match          = umc_bus_match,
+        .probe          = umc_device_probe,
+        .remove         = umc_device_remove,
+        .suspend        = umc_device_suspend,
+        .resume         = umc_device_resume,
+        .dev_attrs      = umc_dev_attrs,
+};
+EXPORT_SYMBOL_GPL(umc_bus_type);
+
+static int __init umc_bus_init(void)
+{
+        return bus_register(&umc_bus_type);
+}
+module_init(umc_bus_init);
+
+static void __exit umc_bus_exit(void)
+{
+        bus_unregister(&umc_bus_type);
+}
+module_exit(umc_bus_exit);
+
+MODULE_DESCRIPTION("UWB Multi-interface Controller capability bus");
+MODULE_AUTHOR("Cambridge Silicon Radio Ltd.");
+MODULE_LICENSE("GPL");
diff --git a/drivers/uwb/umc-dev.c b/drivers/uwb/umc-dev.c
new file mode 100644
index 000000000000..aa44e1c1a102
--- /dev/null
+++ b/drivers/uwb/umc-dev.c
@@ -0,0 +1,104 @@
+/*
+ * UWB Multi-interface Controller device management.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This file is released under the GNU GPL v2.
+ */
+#include <linux/kernel.h>
+#include <linux/uwb/umc.h>
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+static void umc_device_release(struct device *dev)
+{
+        struct umc_dev *umc = to_umc_dev(dev);
+
+        kfree(umc);
+}
+
+/**
+ * umc_device_create - allocate a child UMC device
+ * @parent: parent of the new UMC device.
+ * @n:      index of the new device.
+ *
+ * The new UMC device will have a bus ID of the parent with '-n'
+ * appended.
+ */
+struct umc_dev *umc_device_create(struct device *parent, int n)
+{
+        struct umc_dev *umc;
+
+        umc = kzalloc(sizeof(struct umc_dev), GFP_KERNEL);
+        if (umc) {
+                snprintf(umc->dev.bus_id, sizeof(umc->dev.bus_id), "%s-%d",
+                         parent->bus_id, n);
+                umc->dev.parent  = parent;
+                umc->dev.bus     = &umc_bus_type;
+                umc->dev.release = umc_device_release;
+
+                umc->dev.dma_mask = parent->dma_mask;
+        }
+        return umc;
+}
+EXPORT_SYMBOL_GPL(umc_device_create);
+
+/**
+ * umc_device_register - register a UMC device
+ * @umc: pointer to the UMC device
+ *
+ * The memory resource for the UMC device is acquired and the device
+ * registered with the system.
+ */
+int umc_device_register(struct umc_dev *umc)
+{
+        int err;
+
+        d_fnstart(3, &umc->dev, "(umc_dev %p)\n", umc);
+
+        err = request_resource(umc->resource.parent, &umc->resource);
+        if (err < 0) {
+                dev_err(&umc->dev, "can't allocate resource range "
+                        "%016Lx to %016Lx: %d\n",
+                        (unsigned long long)umc->resource.start,
+                        (unsigned long long)umc->resource.end,
+                        err);
+                goto error_request_resource;
+        }
+
+        err = device_register(&umc->dev);
+        if (err < 0)
+                goto error_device_register;
+        d_fnend(3, &umc->dev, "(umc_dev %p) = 0\n", umc);
+        return 0;
+
+error_device_register:
+        release_resource(&umc->resource);
+error_request_resource:
+        d_fnend(3, &umc->dev, "(umc_dev %p) = %d\n", umc, err);
+        return err;
+}
+EXPORT_SYMBOL_GPL(umc_device_register);
+
+/**
+ * umc_device_unregister - unregister a UMC device
+ * @umc: pointer to the UMC device
+ *
+ * First we unregister the device, make sure the driver can do it's
+ * resource release thing and then we try to release any left over
+ * resources. We take a ref to the device, to make sure it doesn't
+ * dissapear under our feet.
+ */
+void umc_device_unregister(struct umc_dev *umc)
+{
+        struct device *dev;
+        if (!umc)
+                return;
+        dev = get_device(&umc->dev);
+        d_fnstart(3, dev, "(umc_dev %p)\n", umc);
+        device_unregister(&umc->dev);
+        release_resource(&umc->resource);
+        d_fnend(3, dev, "(umc_dev %p) = void\n", umc);
+        put_device(dev);
+}
+EXPORT_SYMBOL_GPL(umc_device_unregister);
diff --git a/drivers/uwb/umc-drv.c b/drivers/uwb/umc-drv.c
new file mode 100644
index 000000000000..367b5eb85d60
--- /dev/null
+++ b/drivers/uwb/umc-drv.c
@@ -0,0 +1,31 @@
+/*
+ * UWB Multi-interface Controller driver management.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This file is released under the GNU GPL v2.
+ */
+#include <linux/kernel.h>
+#include <linux/uwb/umc.h>
+
+int __umc_driver_register(struct umc_driver *umc_drv, struct module *module,
+                          const char *mod_name)
+{
+        umc_drv->driver.name     = umc_drv->name;
+        umc_drv->driver.owner    = module;
+        umc_drv->driver.mod_name = mod_name;
+        umc_drv->driver.bus      = &umc_bus_type;
+
+        return driver_register(&umc_drv->driver);
+}
+EXPORT_SYMBOL_GPL(__umc_driver_register);
+
+/**
+ * umc_driver_register - unregister a UMC capabiltity driver.
+ * @umc_drv:  pointer to the driver.
+ */
+void umc_driver_unregister(struct umc_driver *umc_drv)
+{
+        driver_unregister(&umc_drv->driver);
+}
+EXPORT_SYMBOL_GPL(umc_driver_unregister);
diff --git a/drivers/uwb/uwb-debug.c b/drivers/uwb/uwb-debug.c
new file mode 100644
index 000000000000..6d232c35d07d
--- /dev/null
+++ b/drivers/uwb/uwb-debug.c
@@ -0,0 +1,367 @@
+/*
+ * Ultra Wide Band
+ * Debug support
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: doc
+ */
+
+#include <linux/spinlock.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/notifier.h>
+#include <linux/device.h>
+#include <linux/debugfs.h>
+#include <linux/uaccess.h>
+#include <linux/seq_file.h>
+
+#include <linux/uwb/debug-cmd.h>
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+#include "uwb-internal.h"
+
+void dump_bytes(struct device *dev, const void *_buf, size_t rsize)
+{
+        const char *buf = _buf;
+        char line[32];
+        size_t offset = 0;
+        int cnt, cnt2;
+        for (cnt = 0; cnt < rsize; cnt += 8) {
+                size_t rtop = rsize - cnt < 8 ? rsize - cnt : 8;
+                for (offset = cnt2 = 0; cnt2 < rtop; cnt2++) {
+                        offset += scnprintf(line + offset, sizeof(line) - offset,
+                                            "%02x ", buf[cnt + cnt2] & 0xff);
+                }
+                if (dev)
+                        dev_info(dev, "%s\n", line);
+                else
+                        printk(KERN_INFO "%s\n", line);
+        }
+}
+EXPORT_SYMBOL_GPL(dump_bytes);
+
+/*
+ * Debug interface
+ *
+ * Per radio controller debugfs files (in uwb/uwbN/):
+ *
+ * command: Flexible command interface (see <linux/uwb/debug-cmd.h>).
+ *
+ * reservations: information on reservations.
+ *
+ * accept: Set to true (Y or 1) to accept reservation requests from
+ * peers.
+ *
+ * drp_avail: DRP availability information.
+ */
+
+struct uwb_dbg {
+        struct uwb_pal pal;
+
+        u32 accept;
+        struct list_head rsvs;
+
+        struct dentry *root_d;
+        struct dentry *command_f;
+        struct dentry *reservations_f;
+        struct dentry *accept_f;
+        struct dentry *drp_avail_f;
+};
+
+static struct dentry *root_dir;
+
+static void uwb_dbg_rsv_cb(struct uwb_rsv *rsv)
+{
+        struct uwb_rc *rc = rsv->rc;
+        struct device *dev = &rc->uwb_dev.dev;
+        struct uwb_dev_addr devaddr;
+        char owner[UWB_ADDR_STRSIZE], target[UWB_ADDR_STRSIZE];
+
+        uwb_dev_addr_print(owner, sizeof(owner), &rsv->owner->dev_addr);
+        if (rsv->target.type == UWB_RSV_TARGET_DEV)
+                devaddr = rsv->target.dev->dev_addr;
+        else
+                devaddr = rsv->target.devaddr;
+        uwb_dev_addr_print(target, sizeof(target), &devaddr);
+
+        dev_dbg(dev, "debug: rsv %s -> %s: %s\n",
+                owner, target, uwb_rsv_state_str(rsv->state));
+}
+
+static int cmd_rsv_establish(struct uwb_rc *rc,
+                             struct uwb_dbg_cmd_rsv_establish *cmd)
+{
+        struct uwb_mac_addr macaddr;
+        struct uwb_rsv *rsv;
+        struct uwb_dev *target;
+        int ret;
+
+        memcpy(&macaddr, cmd->target, sizeof(macaddr));
+        target = uwb_dev_get_by_macaddr(rc, &macaddr);
+        if (target == NULL)
+                return -ENODEV;
+
+        rsv = uwb_rsv_create(rc, uwb_dbg_rsv_cb, NULL);
+        if (rsv == NULL) {
+                uwb_dev_put(target);
+                return -ENOMEM;
+        }
+
+        rsv->owner       = &rc->uwb_dev;
+        rsv->target.type = UWB_RSV_TARGET_DEV;
+        rsv->target.dev  = target;
+        rsv->type        = cmd->type;
+        rsv->max_mas     = cmd->max_mas;
+        rsv->min_mas     = cmd->min_mas;
+        rsv->sparsity    = cmd->sparsity;
+
+        ret = uwb_rsv_establish(rsv);
+        if (ret)
+                uwb_rsv_destroy(rsv);
+        else
+                list_add_tail(&rsv->pal_node, &rc->dbg->rsvs);
+
+        return ret;
+}
+
+static int cmd_rsv_terminate(struct uwb_rc *rc,
+                             struct uwb_dbg_cmd_rsv_terminate *cmd)
+{
+        struct uwb_rsv *rsv, *found = NULL;
+        int i = 0;
+
+        list_for_each_entry(rsv, &rc->dbg->rsvs, pal_node) {
+                if (i == cmd->index) {
+                        found = rsv;
+                        break;
+                }
+        }
+        if (!found)
+                return -EINVAL;
+
+        list_del(&found->pal_node);
+        uwb_rsv_terminate(found);
+
+        return 0;
+}
+
+static int command_open(struct inode *inode, struct file *file)
+{
+        file->private_data = inode->i_private;
+
+        return 0;
+}
+
+static ssize_t command_write(struct file *file, const char __user *buf,
+                         size_t len, loff_t *off)
+{
+        struct uwb_rc *rc = file->private_data;
+        struct uwb_dbg_cmd cmd;
+        int ret;
+
+        if (len != sizeof(struct uwb_dbg_cmd))
+                return -EINVAL;
+
+        if (copy_from_user(&cmd, buf, len) != 0)
+                return -EFAULT;
+
+        switch (cmd.type) {
+        case UWB_DBG_CMD_RSV_ESTABLISH:
+                ret = cmd_rsv_establish(rc, &cmd.rsv_establish);
+                break;
+        case UWB_DBG_CMD_RSV_TERMINATE:
+                ret = cmd_rsv_terminate(rc, &cmd.rsv_terminate);
+                break;
+        default:
+                return -EINVAL;
+        }
+
+        return ret < 0 ? ret : len;
+}
+
+static struct file_operations command_fops = {
+        .open   = command_open,
+        .write  = command_write,
+        .read   = NULL,
+        .llseek = no_llseek,
+        .owner  = THIS_MODULE,
+};
+
+static int reservations_print(struct seq_file *s, void *p)
+{
+        struct uwb_rc *rc = s->private;
+        struct uwb_rsv *rsv;
+
+        mutex_lock(&rc->rsvs_mutex);
+
+        list_for_each_entry(rsv, &rc->reservations, rc_node) {
+                struct uwb_dev_addr devaddr;
+                char owner[UWB_ADDR_STRSIZE], target[UWB_ADDR_STRSIZE];
+                bool is_owner;
+                char buf[72];
+
+                uwb_dev_addr_print(owner, sizeof(owner), &rsv->owner->dev_addr);
+                if (rsv->target.type == UWB_RSV_TARGET_DEV) {
+                        devaddr = rsv->target.dev->dev_addr;
+                        is_owner = &rc->uwb_dev == rsv->owner;
+                } else {
+                        devaddr = rsv->target.devaddr;
+                        is_owner = true;
+                }
+                uwb_dev_addr_print(target, sizeof(target), &devaddr);
+
+                seq_printf(s, "%c %s -> %s: %s\n",
+                           is_owner ? 'O' : 'T',
+                           owner, target, uwb_rsv_state_str(rsv->state));
+                seq_printf(s, "  stream: %d  type: %s\n",
+                           rsv->stream, uwb_rsv_type_str(rsv->type));
+                bitmap_scnprintf(buf, sizeof(buf), rsv->mas.bm, UWB_NUM_MAS);
+                seq_printf(s, "  %s\n", buf);
+        }
+
+        mutex_unlock(&rc->rsvs_mutex);
+
+        return 0;
+}
+
+static int reservations_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, reservations_print, inode->i_private);
+}
+
+static struct file_operations reservations_fops = {
+        .open    = reservations_open,
+        .read    = seq_read,
+        .llseek  = seq_lseek,
+        .release = single_release,
+        .owner   = THIS_MODULE,
+};
+
+static int drp_avail_print(struct seq_file *s, void *p)
+{
+        struct uwb_rc *rc = s->private;
+        char buf[72];
+
+        bitmap_scnprintf(buf, sizeof(buf), rc->drp_avail.global, UWB_NUM_MAS);
+        seq_printf(s, "global:  %s\n", buf);
+        bitmap_scnprintf(buf, sizeof(buf), rc->drp_avail.local, UWB_NUM_MAS);
+        seq_printf(s, "local:   %s\n", buf);
+        bitmap_scnprintf(buf, sizeof(buf), rc->drp_avail.pending, UWB_NUM_MAS);
+        seq_printf(s, "pending: %s\n", buf);
+
+        return 0;
+}
+
+static int drp_avail_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, drp_avail_print, inode->i_private);
+}
+
+static struct file_operations drp_avail_fops = {
+        .open    = drp_avail_open,
+        .read    = seq_read,
+        .llseek  = seq_lseek,
+        .release = single_release,
+        .owner   = THIS_MODULE,
+};
+
+static void uwb_dbg_new_rsv(struct uwb_rsv *rsv)
+{
+        struct uwb_rc *rc = rsv->rc;
+
+        if (rc->dbg->accept)
+                uwb_rsv_accept(rsv, uwb_dbg_rsv_cb, NULL);
+}
+
+/**
+ * uwb_dbg_add_rc - add a debug interface for a radio controller
+ * @rc: the radio controller
+ */
+void uwb_dbg_add_rc(struct uwb_rc *rc)
+{
+        rc->dbg = kzalloc(sizeof(struct uwb_dbg), GFP_KERNEL);
+        if (rc->dbg == NULL)
+                return;
+
+        INIT_LIST_HEAD(&rc->dbg->rsvs);
+
+        uwb_pal_init(&rc->dbg->pal);
+        rc->dbg->pal.new_rsv = uwb_dbg_new_rsv;
+        uwb_pal_register(rc, &rc->dbg->pal);
+        if (root_dir) {
+                rc->dbg->root_d = debugfs_create_dir(dev_name(&rc->uwb_dev.dev),
+                                                     root_dir);
+                rc->dbg->command_f = debugfs_create_file("command", 0200,
+                                                         rc->dbg->root_d, rc,
+                                                         &command_fops);
+                rc->dbg->reservations_f = debugfs_create_file("reservations", 0444,
+                                                              rc->dbg->root_d, rc,
+                                                              &reservations_fops);
+                rc->dbg->accept_f = debugfs_create_bool("accept", 0644,
+                                                        rc->dbg->root_d,
+                                                        &rc->dbg->accept);
+                rc->dbg->drp_avail_f = debugfs_create_file("drp_avail", 0444,
+                                                           rc->dbg->root_d, rc,
+                                                           &drp_avail_fops);
+        }
+}
+
+/**
+ * uwb_dbg_add_rc - remove a radio controller's debug interface
+ * @rc: the radio controller
+ */
+void uwb_dbg_del_rc(struct uwb_rc *rc)
+{
+        struct uwb_rsv *rsv, *t;
+
+        if (rc->dbg == NULL)
+                return;
+
+        list_for_each_entry_safe(rsv, t, &rc->dbg->rsvs, pal_node) {
+                uwb_rsv_destroy(rsv);
+        }
+
+        uwb_pal_unregister(rc, &rc->dbg->pal);
+
+        if (root_dir) {
+                debugfs_remove(rc->dbg->drp_avail_f);
+                debugfs_remove(rc->dbg->accept_f);
+                debugfs_remove(rc->dbg->reservations_f);
+                debugfs_remove(rc->dbg->command_f);
+                debugfs_remove(rc->dbg->root_d);
+        }
+}
+
+/**
+ * uwb_dbg_exit - initialize the debug interface sub-module
+ */
+void uwb_dbg_init(void)
+{
+        root_dir = debugfs_create_dir("uwb", NULL);
+}
+
+/**
+ * uwb_dbg_exit - clean-up the debug interface sub-module
+ */
+void uwb_dbg_exit(void)
+{
+        debugfs_remove(root_dir);
+}
diff --git a/drivers/uwb/uwb-internal.h b/drivers/uwb/uwb-internal.h
new file mode 100644
index 000000000000..2ad307d12961
--- /dev/null
+++ b/drivers/uwb/uwb-internal.h
@@ -0,0 +1,305 @@
+/*
+ * Ultra Wide Band
+ * UWB internal API
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ * This contains most of the internal API for UWB. This is stuff used
+ * across the stack that of course, is of no interest to the rest.
+ *
+ * Some parts might end up going public (like uwb_rc_*())...
+ */
+
+#ifndef __UWB_INTERNAL_H__
+#define __UWB_INTERNAL_H__
+
+#include <linux/version.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/uwb.h>
+#include <linux/mutex.h>
+
+struct uwb_beca_e;
+
+/* General device API */
+extern void uwb_dev_init(struct uwb_dev *uwb_dev);
+extern int __uwb_dev_offair(struct uwb_dev *, struct uwb_rc *);
+extern int uwb_dev_add(struct uwb_dev *uwb_dev, struct device *parent_dev,
+                       struct uwb_rc *parent_rc);
+extern void uwb_dev_rm(struct uwb_dev *uwb_dev);
+extern void uwbd_dev_onair(struct uwb_rc *, struct uwb_beca_e *);
+extern void uwbd_dev_offair(struct uwb_beca_e *);
+void uwb_notify(struct uwb_rc *rc, struct uwb_dev *uwb_dev, enum uwb_notifs event);
+
+/* General UWB Radio Controller Internal API */
+extern struct uwb_rc *__uwb_rc_try_get(struct uwb_rc *);
+static inline struct uwb_rc *__uwb_rc_get(struct uwb_rc *rc)
+{
+        uwb_dev_get(&rc->uwb_dev);
+        return rc;
+}
+
+static inline void __uwb_rc_put(struct uwb_rc *rc)
+{
+        uwb_dev_put(&rc->uwb_dev);
+}
+
+extern int uwb_rc_reset(struct uwb_rc *rc);
+extern int uwb_rc_beacon(struct uwb_rc *rc,
+                         int channel, unsigned bpst_offset);
+extern int uwb_rc_scan(struct uwb_rc *rc,
+                       unsigned channel, enum uwb_scan_type type,
+                       unsigned bpst_offset);
+extern int uwb_rc_send_all_drp_ie(struct uwb_rc *rc);
+extern ssize_t uwb_rc_print_IEs(struct uwb_rc *rc, char *, size_t);
+extern void uwb_rc_ie_init(struct uwb_rc *);
+extern void uwb_rc_ie_init(struct uwb_rc *);
+extern ssize_t uwb_rc_ie_setup(struct uwb_rc *);
+extern void uwb_rc_ie_release(struct uwb_rc *);
+extern int uwb_rc_ie_add(struct uwb_rc *,
+                         const struct uwb_ie_hdr *, size_t);
+extern int uwb_rc_ie_rm(struct uwb_rc *, enum uwb_ie);
+
+extern const char *uwb_rc_strerror(unsigned code);
+
+/*
+ * Time to wait for a response to an RC command.
+ *
+ * Some commands can take a long time to response. e.g., START_BEACON
+ * may scan for several superframes before joining an existing beacon
+ * group and this can take around 600 ms.
+ */
+#define UWB_RC_CMD_TIMEOUT_MS 1000 /* ms */
+
+/*
+ * Notification/Event Handlers
+ */
+
+struct uwb_rc_neh;
+
+void uwb_rc_neh_create(struct uwb_rc *rc);
+void uwb_rc_neh_destroy(struct uwb_rc *rc);
+
+struct uwb_rc_neh *uwb_rc_neh_add(struct uwb_rc *rc, struct uwb_rccb *cmd,
+                                  u8 expected_type, u16 expected_event,
+                                  uwb_rc_cmd_cb_f cb, void *arg);
+void uwb_rc_neh_rm(struct uwb_rc *rc, struct uwb_rc_neh *neh);
+void uwb_rc_neh_arm(struct uwb_rc *rc, struct uwb_rc_neh *neh);
+void uwb_rc_neh_put(struct uwb_rc_neh *neh);
+
+/* Event size tables */
+extern int uwb_est_create(void);
+extern void uwb_est_destroy(void);
+
+
+/*
+ * UWB Events & management daemon
+ */
+
+/**
+ * enum uwb_event_type - types of UWB management daemon events
+ *
+ * The UWB management daemon (uwbd) can receive two types of events:
+ *   UWB_EVT_TYPE_NOTIF - notification from the radio controller.
+ *   UWB_EVT_TYPE_MSG   - a simple message.
+ */
+enum uwb_event_type {
+        UWB_EVT_TYPE_NOTIF,
+        UWB_EVT_TYPE_MSG,
+};
+
+/**
+ * struct uwb_event_notif - an event for a radio controller notification
+ * @size: Size of the buffer (ie: Guaranteed to contain at least
+ *        a full 'struct uwb_rceb')
+ * @rceb: Pointer to a kmalloced() event payload
+ */
+struct uwb_event_notif {
+        size_t size;
+        struct uwb_rceb *rceb;
+};
+
+/**
+ * enum uwb_event_message - an event for a message for asynchronous processing
+ *
+ * UWB_EVT_MSG_RESET - reset the radio controller and all PAL hardware.
+ */
+enum uwb_event_message {
+        UWB_EVT_MSG_RESET,
+};
+
+/**
+ * UWB Event
+ * @rc:         Radio controller that emitted the event (referenced)
+ * @ts_jiffies: Timestamp, when was it received
+ * @type:       This event's type.
+ */
+struct uwb_event {
+        struct list_head list_node;
+        struct uwb_rc *rc;
+        unsigned long ts_jiffies;
+        enum uwb_event_type type;
+        union {
+                struct uwb_event_notif notif;
+                enum uwb_event_message message;
+        };
+};
+
+extern void uwbd_start(void);
+extern void uwbd_stop(void);
+extern struct uwb_event *uwb_event_alloc(size_t, gfp_t gfp_mask);
+extern void uwbd_event_queue(struct uwb_event *);
+void uwbd_flush(struct uwb_rc *rc);
+
+/* UWB event handlers */
+extern int uwbd_evt_handle_rc_beacon(struct uwb_event *);
+extern int uwbd_evt_handle_rc_beacon_size(struct uwb_event *);
+extern int uwbd_evt_handle_rc_bpoie_change(struct uwb_event *);
+extern int uwbd_evt_handle_rc_bp_slot_change(struct uwb_event *);
+extern int uwbd_evt_handle_rc_drp(struct uwb_event *);
+extern int uwbd_evt_handle_rc_drp_avail(struct uwb_event *);
+
+int uwbd_msg_handle_reset(struct uwb_event *evt);
+
+
+/*
+ * Address management
+ */
+int uwb_rc_dev_addr_assign(struct uwb_rc *rc);
+int uwbd_evt_handle_rc_dev_addr_conflict(struct uwb_event *evt);
+
+/*
+ * UWB Beacon Cache
+ *
+ * Each beacon we received is kept in a cache--when we receive that
+ * beacon consistently, that means there is a new device that we have
+ * to add to the system.
+ */
+
+extern unsigned long beacon_timeout_ms;
+
+/** Beacon cache list */
+struct uwb_beca {
+        struct list_head list;
+        size_t entries;
+        struct mutex mutex;
+};
+
+extern struct uwb_beca uwb_beca;
+
+/**
+ * Beacon cache entry
+ *
+ * @jiffies_refresh: last time a beacon was  received that refreshed
+ *                   this cache entry.
+ * @uwb_dev: device connected to this beacon. This pointer is not
+ *           safe, you need to get it with uwb_dev_try_get()
+ *
+ * @hits: how many time we have seen this beacon since last time we
+ *        cleared it
+ */
+struct uwb_beca_e {
+        struct mutex mutex;
+        struct kref refcnt;
+        struct list_head node;
+        struct uwb_mac_addr *mac_addr;
+        struct uwb_dev_addr dev_addr;
+        u8 hits;
+        unsigned long ts_jiffies;
+        struct uwb_dev *uwb_dev;
+        struct uwb_rc_evt_beacon *be;
+        struct stats lqe_stats, rssi_stats;     /* radio statistics */
+};
+struct uwb_beacon_frame;
+extern ssize_t uwb_bce_print_IEs(struct uwb_dev *, struct uwb_beca_e *,
+                                 char *, size_t);
+extern struct uwb_beca_e *__uwb_beca_add(struct uwb_rc_evt_beacon *,
+                                         struct uwb_beacon_frame *,
+                                         unsigned long);
+
+extern void uwb_bce_kfree(struct kref *_bce);
+static inline void uwb_bce_get(struct uwb_beca_e *bce)
+{
+        kref_get(&bce->refcnt);
+}
+static inline void uwb_bce_put(struct uwb_beca_e *bce)
+{
+        kref_put(&bce->refcnt, uwb_bce_kfree);
+}
+extern void uwb_beca_purge(void);
+extern void uwb_beca_release(void);
+
+struct uwb_dev *uwb_dev_get_by_devaddr(struct uwb_rc *rc,
+                                       const struct uwb_dev_addr *devaddr);
+struct uwb_dev *uwb_dev_get_by_macaddr(struct uwb_rc *rc,
+                                       const struct uwb_mac_addr *macaddr);
+
+/* -- UWB Sysfs representation */
+extern struct class uwb_rc_class;
+extern struct device_attribute dev_attr_mac_address;
+extern struct device_attribute dev_attr_beacon;
+extern struct device_attribute dev_attr_scan;
+
+/* -- DRP Bandwidth allocator: bandwidth allocations, reservations, DRP */
+void uwb_rsv_init(struct uwb_rc *rc);
+int uwb_rsv_setup(struct uwb_rc *rc);
+void uwb_rsv_cleanup(struct uwb_rc *rc);
+
+void uwb_rsv_set_state(struct uwb_rsv *rsv, enum uwb_rsv_state new_state);
+void uwb_rsv_remove(struct uwb_rsv *rsv);
+struct uwb_rsv *uwb_rsv_find(struct uwb_rc *rc, struct uwb_dev *src,
+                             struct uwb_ie_drp *drp_ie);
+void uwb_rsv_sched_update(struct uwb_rc *rc);
+
+void uwb_drp_handle_timeout(struct uwb_rsv *rsv);
+int uwb_drp_ie_update(struct uwb_rsv *rsv);
+void uwb_drp_ie_to_bm(struct uwb_mas_bm *bm, const struct uwb_ie_drp *drp_ie);
+
+void uwb_drp_avail_init(struct uwb_rc *rc);
+int  uwb_drp_avail_reserve_pending(struct uwb_rc *rc, struct uwb_mas_bm *mas);
+void uwb_drp_avail_reserve(struct uwb_rc *rc, struct uwb_mas_bm *mas);
+void uwb_drp_avail_release(struct uwb_rc *rc, struct uwb_mas_bm *mas);
+void uwb_drp_avail_ie_update(struct uwb_rc *rc);
+
+/* -- PAL support */
+void uwb_rc_pal_init(struct uwb_rc *rc);
+
+/* -- Misc */
+
+extern ssize_t uwb_mac_frame_hdr_print(char *, size_t,
+                                       const struct uwb_mac_frame_hdr *);
+
+/* -- Debug interface */
+void uwb_dbg_init(void);
+void uwb_dbg_exit(void);
+void uwb_dbg_add_rc(struct uwb_rc *rc);
+void uwb_dbg_del_rc(struct uwb_rc *rc);
+
+/* Workarounds for version specific stuff */
+
+static inline void uwb_dev_lock(struct uwb_dev *uwb_dev)
+{
+        down(&uwb_dev->dev.sem);
+}
+
+static inline void uwb_dev_unlock(struct uwb_dev *uwb_dev)
+{
+        up(&uwb_dev->dev.sem);
+}
+
+#endif /* #ifndef __UWB_INTERNAL_H__ */
diff --git a/drivers/uwb/uwbd.c b/drivers/uwb/uwbd.c
new file mode 100644
index 000000000000..78908416e42c
--- /dev/null
+++ b/drivers/uwb/uwbd.c
@@ -0,0 +1,410 @@
+/*
+ * Ultra Wide Band
+ * Neighborhood Management Daemon
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * This daemon takes care of maintaing information that describes the
+ * UWB neighborhood that the radios in this machine can see. It also
+ * keeps a tab of which devices are visible, makes sure each HC sits
+ * on a different channel to avoid interfering, etc.
+ *
+ * Different drivers (radio controller, device, any API in general)
+ * communicate with this daemon through an event queue. Daemon wakes
+ * up, takes a list of events and handles them one by one; handling
+ * function is extracted from a table based on the event's type and
+ * subtype. Events are freed only if the handling function says so.
+ *
+ *   . Lock protecting the event list has to be an spinlock and locked
+ *     with IRQSAVE because it might be called from an interrupt
+ *     context (ie: when events arrive and the notification drops
+ *     down from the ISR).
+ *
+ *   . UWB radio controller drivers queue events to the daemon using
+ *     uwbd_event_queue(). They just get the event, chew it to make it
+ *     look like UWBD likes it and pass it in a buffer allocated with
+ *     uwb_event_alloc().
+ *
+ * EVENTS
+ *
+ * Events have a type, a subtype, a lenght, some other stuff and the
+ * data blob, which depends on the event. The header is 'struct
+ * uwb_event'; for payloads, see 'struct uwbd_evt_*'.
+ *
+ * EVENT HANDLER TABLES
+ *
+ * To find a handling function for an event, the type is used to index
+ * a subtype-table in the type-table. The subtype-table is indexed
+ * with the subtype to get the function that handles the event. Start
+ * with the main type-table 'uwbd_evt_type_handler'.
+ *
+ * DEVICES
+ *
+ * Devices are created when a bunch of beacons have been received and
+ * it is stablished that the device has stable radio presence. CREATED
+ * only, not configured. Devices are ONLY configured when an
+ * Application-Specific IE Probe is receieved, in which the device
+ * declares which Protocol ID it groks. Then the device is CONFIGURED
+ * (and the driver->probe() stuff of the device model is invoked).
+ *
+ * Devices are considered disconnected when a certain number of
+ * beacons are not received in an amount of time.
+ *
+ * Handler functions are called normally uwbd_evt_handle_*().
+ */
+
+#include <linux/kthread.h>
+#include <linux/module.h>
+#include <linux/freezer.h>
+#include "uwb-internal.h"
+
+#define D_LOCAL 1
+#include <linux/uwb/debug.h>
+
+
+/**
+ * UWBD Event handler function signature
+ *
+ * Return !0 if the event needs not to be freed (ie the handler
+ * takes/took care of it). 0 means the daemon code will free the
+ * event.
+ *
+ * @evt->rc is already referenced and guaranteed to exist. See
+ * uwb_evt_handle().
+ */
+typedef int (*uwbd_evt_handler_f)(struct uwb_event *);
+
+/**
+ * Properties of a UWBD event
+ *
+ * @handler:    the function that will handle this event
+ * @name:       text name of event
+ */
+struct uwbd_event {
+        uwbd_evt_handler_f handler;
+        const char *name;
+};
+
+/** Table of handlers for and properties of the UWBD Radio Control Events */
+static
+struct uwbd_event uwbd_events[] = {
+        [UWB_RC_EVT_BEACON] = {
+                .handler = uwbd_evt_handle_rc_beacon,
+                .name = "BEACON_RECEIVED"
+        },
+        [UWB_RC_EVT_BEACON_SIZE] = {
+                .handler = uwbd_evt_handle_rc_beacon_size,
+                .name = "BEACON_SIZE_CHANGE"
+        },
+        [UWB_RC_EVT_BPOIE_CHANGE] = {
+                .handler = uwbd_evt_handle_rc_bpoie_change,
+                .name = "BPOIE_CHANGE"
+        },
+        [UWB_RC_EVT_BP_SLOT_CHANGE] = {
+                .handler = uwbd_evt_handle_rc_bp_slot_change,
+                .name = "BP_SLOT_CHANGE"
+        },
+        [UWB_RC_EVT_DRP_AVAIL] = {
+                .handler = uwbd_evt_handle_rc_drp_avail,
+                .name = "DRP_AVAILABILITY_CHANGE"
+        },
+        [UWB_RC_EVT_DRP] = {
+                .handler = uwbd_evt_handle_rc_drp,
+                .name = "DRP"
+        },
+        [UWB_RC_EVT_DEV_ADDR_CONFLICT] = {
+                .handler = uwbd_evt_handle_rc_dev_addr_conflict,
+                .name = "DEV_ADDR_CONFLICT",
+        },
+};
+
+
+
+struct uwbd_evt_type_handler {
+        const char *name;
+        struct uwbd_event *uwbd_events;
+        size_t size;
+};
+
+#define UWBD_EVT_TYPE_HANDLER(n,a) {            \
+        .name = (n),                            \
+        .uwbd_events = (a),                     \
+        .size = sizeof(a)/sizeof((a)[0])        \
+}
+
+
+/** Table of handlers for each UWBD Event type. */
+static
+struct uwbd_evt_type_handler uwbd_evt_type_handlers[] = {
+        [UWB_RC_CET_GENERAL] = UWBD_EVT_TYPE_HANDLER("RC", uwbd_events)
+};
+
+static const
+size_t uwbd_evt_type_handlers_len =
+        sizeof(uwbd_evt_type_handlers) / sizeof(uwbd_evt_type_handlers[0]);
+
+static const struct uwbd_event uwbd_message_handlers[] = {
+        [UWB_EVT_MSG_RESET] = {
+                .handler = uwbd_msg_handle_reset,
+                .name = "reset",
+        },
+};
+
+static DEFINE_MUTEX(uwbd_event_mutex);
+
+/**
+ * Handle an URC event passed to the UWB Daemon
+ *
+ * @evt: the event to handle
+ * @returns: 0 if the event can be kfreed, !0 on the contrary
+ *           (somebody else took ownership) [coincidentally, returning
+ *           a <0 errno code will free it :)].
+ *
+ * Looks up the two indirection tables (one for the type, one for the
+ * subtype) to decide which function handles it and then calls the
+ * handler.
+ *
+ * The event structure passed to the event handler has the radio
+ * controller in @evt->rc referenced. The reference will be dropped
+ * once the handler returns, so if it needs it for longer (async),
+ * it'll need to take another one.
+ */
+static
+int uwbd_event_handle_urc(struct uwb_event *evt)
+{
+        struct uwbd_evt_type_handler *type_table;
+        uwbd_evt_handler_f handler;
+        u8 type, context;
+        u16 event;
+
+        type = evt->notif.rceb->bEventType;
+        event = le16_to_cpu(evt->notif.rceb->wEvent);
+        context = evt->notif.rceb->bEventContext;
+
+        if (type > uwbd_evt_type_handlers_len) {
+                printk(KERN_ERR "UWBD: event type %u: unknown (too high)\n", type);
+                return -EINVAL;
+        }
+        type_table = &uwbd_evt_type_handlers[type];
+        if (type_table->uwbd_events == NULL) {
+                printk(KERN_ERR "UWBD: event type %u: unknown\n", type);
+                return -EINVAL;
+        }
+        if (event > type_table->size) {
+                printk(KERN_ERR "UWBD: event %s[%u]: unknown (too high)\n",
+                       type_table->name, event);
+                return -EINVAL;
+        }
+        handler = type_table->uwbd_events[event].handler;
+        if (handler == NULL) {
+                printk(KERN_ERR "UWBD: event %s[%u]: unknown\n", type_table->name, event);
+                return -EINVAL;
+        }
+        return (*handler)(evt);
+}
+
+static void uwbd_event_handle_message(struct uwb_event *evt)
+{
+        struct uwb_rc *rc;
+        int result;
+
+        rc = evt->rc;
+
+        if (evt->message < 0 || evt->message >= ARRAY_SIZE(uwbd_message_handlers)) {
+                dev_err(&rc->uwb_dev.dev, "UWBD: invalid message type %d\n", evt->message);
+                return;
+        }
+
+        /* If this is a reset event we need to drop the
+         * uwbd_event_mutex or it deadlocks when the reset handler
+         * attempts to flush the uwbd events. */
+        if (evt->message == UWB_EVT_MSG_RESET)
+                mutex_unlock(&uwbd_event_mutex);
+
+        result = uwbd_message_handlers[evt->message].handler(evt);
+        if (result < 0)
+                dev_err(&rc->uwb_dev.dev, "UWBD: '%s' message failed: %d\n",
+                        uwbd_message_handlers[evt->message].name, result);
+
+        if (evt->message == UWB_EVT_MSG_RESET)
+                mutex_lock(&uwbd_event_mutex);
+}
+
+static void uwbd_event_handle(struct uwb_event *evt)
+{
+        struct uwb_rc *rc;
+        int should_keep;
+
+        rc = evt->rc;
+
+        if (rc->ready) {
+                switch (evt->type) {
+                case UWB_EVT_TYPE_NOTIF:
+                        should_keep = uwbd_event_handle_urc(evt);
+                        if (should_keep <= 0)
+                                kfree(evt->notif.rceb);
+                        break;
+                case UWB_EVT_TYPE_MSG:
+                        uwbd_event_handle_message(evt);
+                        break;
+                default:
+                        dev_err(&rc->uwb_dev.dev, "UWBD: invalid event type %d\n", evt->type);
+                        break;
+                }
+        }
+
+        __uwb_rc_put(rc);       /* for the __uwb_rc_get() in uwb_rc_notif_cb() */
+}
+/* The UWB Daemon */
+
+
+/** Daemon's PID: used to decide if we can queue or not */
+static int uwbd_pid;
+/** Daemon's task struct for managing the kthread */
+static struct task_struct *uwbd_task;
+/** Daemon's waitqueue for waiting for new events */
+static DECLARE_WAIT_QUEUE_HEAD(uwbd_wq);
+/** Daemon's list of events; we queue/dequeue here */
+static struct list_head uwbd_event_list = LIST_HEAD_INIT(uwbd_event_list);
+/** Daemon's list lock to protect concurent access */
+static DEFINE_SPINLOCK(uwbd_event_list_lock);
+
+
+/**
+ * UWB Daemon
+ *
+ * Listens to all UWB notifications and takes care to track the state
+ * of the UWB neighboorhood for the kernel. When we do a run, we
+ * spinlock, move the list to a private copy and release the
+ * lock. Hold it as little as possible. Not a conflict: it is
+ * guaranteed we own the events in the private list.
+ *
+ * FIXME: should change so we don't have a 1HZ timer all the time, but
+ *        only if there are devices.
+ */
+static int uwbd(void *unused)
+{
+        unsigned long flags;
+        struct list_head list = LIST_HEAD_INIT(list);
+        struct uwb_event *evt, *nxt;
+        int should_stop = 0;
+        while (1) {
+                wait_event_interruptible_timeout(
+                        uwbd_wq,
+                        !list_empty(&uwbd_event_list)
+                          || (should_stop = kthread_should_stop()),
+                        HZ);
+                if (should_stop)
+                        break;
+                try_to_freeze();
+
+                mutex_lock(&uwbd_event_mutex);
+                spin_lock_irqsave(&uwbd_event_list_lock, flags);
+                list_splice_init(&uwbd_event_list, &list);
+                spin_unlock_irqrestore(&uwbd_event_list_lock, flags);
+                list_for_each_entry_safe(evt, nxt, &list, list_node) {
+                        list_del(&evt->list_node);
+                        uwbd_event_handle(evt);
+                        kfree(evt);
+                }
+                mutex_unlock(&uwbd_event_mutex);
+
+                uwb_beca_purge();       /* Purge devices that left */
+        }
+        return 0;
+}
+
+
+/** Start the UWB daemon */
+void uwbd_start(void)
+{
+        uwbd_task = kthread_run(uwbd, NULL, "uwbd");
+        if (uwbd_task == NULL)
+                printk(KERN_ERR "UWB: Cannot start management daemon; "
+                       "UWB won't work\n");
+        else
+                uwbd_pid = uwbd_task->pid;
+}
+
+/* Stop the UWB daemon and free any unprocessed events */
+void uwbd_stop(void)
+{
+        unsigned long flags;
+        struct uwb_event *evt, *nxt;
+        kthread_stop(uwbd_task);
+        spin_lock_irqsave(&uwbd_event_list_lock, flags);
+        uwbd_pid = 0;
+        list_for_each_entry_safe(evt, nxt, &uwbd_event_list, list_node) {
+                if (evt->type == UWB_EVT_TYPE_NOTIF)
+                        kfree(evt->notif.rceb);
+                kfree(evt);
+        }
+        spin_unlock_irqrestore(&uwbd_event_list_lock, flags);
+        uwb_beca_release();
+}
+
+/*
+ * Queue an event for the management daemon
+ *
+ * When some lower layer receives an event, it uses this function to
+ * push it forward to the UWB daemon.
+ *
+ * Once you pass the event, you don't own it any more, but the daemon
+ * does. It will uwb_event_free() it when done, so make sure you
+ * uwb_event_alloc()ed it or bad things will happen.
+ *
+ * If the daemon is not running, we just free the event.
+ */
+void uwbd_event_queue(struct uwb_event *evt)
+{
+        unsigned long flags;
+        spin_lock_irqsave(&uwbd_event_list_lock, flags);
+        if (uwbd_pid != 0) {
+                list_add(&evt->list_node, &uwbd_event_list);
+                wake_up_all(&uwbd_wq);
+        } else {
+                __uwb_rc_put(evt->rc);
+                if (evt->type == UWB_EVT_TYPE_NOTIF)
+                        kfree(evt->notif.rceb);
+                kfree(evt);
+        }
+        spin_unlock_irqrestore(&uwbd_event_list_lock, flags);
+        return;
+}
+
+void uwbd_flush(struct uwb_rc *rc)
+{
+        struct uwb_event *evt, *nxt;
+
+        mutex_lock(&uwbd_event_mutex);
+
+        spin_lock_irq(&uwbd_event_list_lock);
+        list_for_each_entry_safe(evt, nxt, &uwbd_event_list, list_node) {
+                if (evt->rc == rc) {
+                        __uwb_rc_put(rc);
+                        list_del(&evt->list_node);
+                        if (evt->type == UWB_EVT_TYPE_NOTIF)
+                                kfree(evt->notif.rceb);
+                        kfree(evt);
+                }
+        }
+        spin_unlock_irq(&uwbd_event_list_lock);
+
+        mutex_unlock(&uwbd_event_mutex);
+}
diff --git a/drivers/uwb/whc-rc.c b/drivers/uwb/whc-rc.c
new file mode 100644
index 000000000000..1711deadb114
--- /dev/null
+++ b/drivers/uwb/whc-rc.c
@@ -0,0 +1,520 @@
+/*
+ * Wireless Host Controller: Radio Control Interface (WHCI v0.95[2.3])
+ * Radio Control command/event transport to the UWB stack
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * Initialize and hook up the Radio Control interface.
+ *
+ * For each device probed, creates an 'struct whcrc' which contains
+ * just the representation of the UWB Radio Controller, and the logic
+ * for reading notifications and passing them to the UWB Core.
+ *
+ * So we initialize all of those, register the UWB Radio Controller
+ * and setup the notification/event handle to pipe the notifications
+ * to the UWB management Daemon.
+ *
+ * Once uwb_rc_add() is called, the UWB stack takes control, resets
+ * the radio and readies the device to take commands the UWB
+ * API/user-space.
+ *
+ * Note this driver is just a transport driver; the commands are
+ * formed at the UWB stack and given to this driver who will deliver
+ * them to the hw and transfer the replies/notifications back to the
+ * UWB stack through the UWB daemon (UWBD).
+ */
+#include <linux/version.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/interrupt.h>
+#include <linux/workqueue.h>
+#include <linux/uwb.h>
+#include <linux/uwb/whci.h>
+#include <linux/uwb/umc.h>
+#include "uwb-internal.h"
+
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+/**
+ * Descriptor for an instance of the UWB Radio Control Driver that
+ * attaches to the URC interface of the WHCI PCI card.
+ *
+ * Unless there is a lock specific to the 'data members', all access
+ * is protected by uwb_rc->mutex.
+ */
+struct whcrc {
+        struct umc_dev *umc_dev;
+        struct uwb_rc *uwb_rc;          /* UWB host controller */
+
+        unsigned long area;
+        void __iomem *rc_base;
+        size_t rc_len;
+        spinlock_t irq_lock;
+
+        void *evt_buf, *cmd_buf;
+        dma_addr_t evt_dma_buf, cmd_dma_buf;
+        wait_queue_head_t cmd_wq;
+        struct work_struct event_work;
+};
+
+/**
+ * Execute an UWB RC command on WHCI/RC
+ *
+ * @rc:       Instance of a Radio Controller that is a whcrc
+ * @cmd:      Buffer containing the RCCB and payload to execute
+ * @cmd_size: Size of the command buffer.
+ *
+ * We copy the command into whcrc->cmd_buf (as it is pretty and
+ * aligned`and physically contiguous) and then press the right keys in
+ * the controller's URCCMD register to get it to read it. We might
+ * have to wait for the cmd_sem to be open to us.
+ *
+ * NOTE: rc's mutex has to be locked
+ */
+static int whcrc_cmd(struct uwb_rc *uwb_rc,
+              const struct uwb_rccb *cmd, size_t cmd_size)
+{
+        int result = 0;
+        struct whcrc *whcrc = uwb_rc->priv;
+        struct device *dev = &whcrc->umc_dev->dev;
+        u32 urccmd;
+
+        d_fnstart(3, dev, "(%p, %p, %zu)\n", uwb_rc, cmd, cmd_size);
+        might_sleep();
+
+        if (cmd_size >= 4096) {
+                result = -E2BIG;
+                goto error;
+        }
+
+        /*
+         * If the URC is halted, then the hardware has reset itself.
+         * Attempt to recover by restarting the device and then return
+         * an error as it's likely that the current command isn't
+         * valid for a newly started RC.
+         */
+        if (le_readl(whcrc->rc_base + URCSTS) & URCSTS_HALTED) {
+                dev_err(dev, "requesting reset of halted radio controller\n");
+                uwb_rc_reset_all(uwb_rc);
+                result = -EIO;
+                goto error;
+        }
+
+        result = wait_event_timeout(whcrc->cmd_wq,
+                !(le_readl(whcrc->rc_base + URCCMD) & URCCMD_ACTIVE), HZ/2);
+        if (result == 0) {
+                dev_err(dev, "device is not ready to execute commands\n");
+                result = -ETIMEDOUT;
+                goto error;
+        }
+
+        memmove(whcrc->cmd_buf, cmd, cmd_size);
+        le_writeq(whcrc->cmd_dma_buf, whcrc->rc_base + URCCMDADDR);
+
+        spin_lock(&whcrc->irq_lock);
+        urccmd = le_readl(whcrc->rc_base + URCCMD);
+        urccmd &= ~(URCCMD_EARV | URCCMD_SIZE_MASK);
+        le_writel(urccmd | URCCMD_ACTIVE | URCCMD_IWR | cmd_size,
+                  whcrc->rc_base + URCCMD);
+        spin_unlock(&whcrc->irq_lock);
+
+error:
+        d_fnend(3, dev, "(%p, %p, %zu) = %d\n",
+                uwb_rc, cmd, cmd_size, result);
+        return result;
+}
+
+static int whcrc_reset(struct uwb_rc *rc)
+{
+        struct whcrc *whcrc = rc->priv;
+
+        return umc_controller_reset(whcrc->umc_dev);
+}
+
+/**
+ * Reset event reception mechanism and tell hw we are ready to get more
+ *
+ * We have read all the events in the event buffer, so we are ready to
+ * reset it to the beginning.
+ *
+ * This is only called during initialization or after an event buffer
+ * has been retired.  This means we can be sure that event processing
+ * is disabled and it's safe to update the URCEVTADDR register.
+ *
+ * There's no need to wait for the event processing to start as the
+ * URC will not clear URCCMD_ACTIVE until (internal) event buffer
+ * space is available.
+ */
+static
+void whcrc_enable_events(struct whcrc *whcrc)
+{
+        struct device *dev = &whcrc->umc_dev->dev;
+        u32 urccmd;
+
+        d_fnstart(4, dev, "(whcrc %p)\n", whcrc);
+
+        le_writeq(whcrc->evt_dma_buf, whcrc->rc_base + URCEVTADDR);
+
+        spin_lock(&whcrc->irq_lock);
+        urccmd = le_readl(whcrc->rc_base + URCCMD) & ~URCCMD_ACTIVE;
+        le_writel(urccmd | URCCMD_EARV, whcrc->rc_base + URCCMD);
+        spin_unlock(&whcrc->irq_lock);
+
+        d_fnend(4, dev, "(whcrc %p) = void\n", whcrc);
+}
+
+static void whcrc_event_work(struct work_struct *work)
+{
+        struct whcrc *whcrc = container_of(work, struct whcrc, event_work);
+        struct device *dev = &whcrc->umc_dev->dev;
+        size_t size;
+        u64 urcevtaddr;
+
+        urcevtaddr = le_readq(whcrc->rc_base + URCEVTADDR);
+        size = urcevtaddr & URCEVTADDR_OFFSET_MASK;
+
+        d_printf(3, dev, "received %zu octet event\n", size);
+        d_dump(4, dev, whcrc->evt_buf, size > 32 ? 32 : size);
+
+        uwb_rc_neh_grok(whcrc->uwb_rc, whcrc->evt_buf, size);
+        whcrc_enable_events(whcrc);
+}
+
+/**
+ * Catch interrupts?
+ *
+ * We ack inmediately (and expect the hw to do the right thing and
+ * raise another IRQ if things have changed :)
+ */
+static
+irqreturn_t whcrc_irq_cb(int irq, void *_whcrc)
+{
+        struct whcrc *whcrc = _whcrc;
+        struct device *dev = &whcrc->umc_dev->dev;
+        u32 urcsts;
+
+        urcsts = le_readl(whcrc->rc_base + URCSTS);
+        if (!(urcsts & URCSTS_INT_MASK))
+                return IRQ_NONE;
+        le_writel(urcsts & URCSTS_INT_MASK, whcrc->rc_base + URCSTS);
+
+        d_printf(4, dev, "acked 0x%08x, urcsts 0x%08x\n",
+                 le_readl(whcrc->rc_base + URCSTS), urcsts);
+
+        if (urcsts & URCSTS_HSE) {
+                dev_err(dev, "host system error -- hardware halted\n");
+                /* FIXME: do something sensible here */
+                goto out;
+        }
+        if (urcsts & URCSTS_ER) {
+                d_printf(3, dev, "ER: event ready\n");
+                schedule_work(&whcrc->event_work);
+        }
+        if (urcsts & URCSTS_RCI) {
+                d_printf(3, dev, "RCI: ready to execute another command\n");
+                wake_up_all(&whcrc->cmd_wq);
+        }
+out:
+        return IRQ_HANDLED;
+}
+
+
+/**
+ * Initialize a UMC RC interface: map regions, get (shared) IRQ
+ */
+static
+int whcrc_setup_rc_umc(struct whcrc *whcrc)
+{
+        int result = 0;
+        struct device *dev = &whcrc->umc_dev->dev;
+        struct umc_dev *umc_dev = whcrc->umc_dev;
+
+        whcrc->area = umc_dev->resource.start;
+        whcrc->rc_len = umc_dev->resource.end - umc_dev->resource.start + 1;
+        result = -EBUSY;
+        if (request_mem_region(whcrc->area, whcrc->rc_len, KBUILD_MODNAME)
+            == NULL) {
+                dev_err(dev, "can't request URC region (%zu bytes @ 0x%lx): %d\n",
+                        whcrc->rc_len, whcrc->area, result);
+                goto error_request_region;
+        }
+
+        whcrc->rc_base = ioremap_nocache(whcrc->area, whcrc->rc_len);
+        if (whcrc->rc_base == NULL) {
+                dev_err(dev, "can't ioremap registers (%zu bytes @ 0x%lx): %d\n",
+                        whcrc->rc_len, whcrc->area, result);
+                goto error_ioremap_nocache;
+        }
+
+        result = request_irq(umc_dev->irq, whcrc_irq_cb, IRQF_SHARED,
+                             KBUILD_MODNAME, whcrc);
+        if (result < 0) {
+                dev_err(dev, "can't allocate IRQ %d: %d\n",
+                        umc_dev->irq, result);
+                goto error_request_irq;
+        }
+
+        result = -ENOMEM;
+        whcrc->cmd_buf = dma_alloc_coherent(&umc_dev->dev, PAGE_SIZE,
+                                            &whcrc->cmd_dma_buf, GFP_KERNEL);
+        if (whcrc->cmd_buf == NULL) {
+                dev_err(dev, "Can't allocate cmd transfer buffer\n");
+                goto error_cmd_buffer;
+        }
+
+        whcrc->evt_buf = dma_alloc_coherent(&umc_dev->dev, PAGE_SIZE,
+                                            &whcrc->evt_dma_buf, GFP_KERNEL);
+        if (whcrc->evt_buf == NULL) {
+                dev_err(dev, "Can't allocate evt transfer buffer\n");
+                goto error_evt_buffer;
+        }
+        d_printf(3, dev, "UWB RC Interface: %zu bytes at 0x%p, irq %u\n",
+                 whcrc->rc_len, whcrc->rc_base, umc_dev->irq);
+        return 0;
+
+error_evt_buffer:
+        dma_free_coherent(&umc_dev->dev, PAGE_SIZE, whcrc->cmd_buf,
+                          whcrc->cmd_dma_buf);
+error_cmd_buffer:
+        free_irq(umc_dev->irq, whcrc);
+error_request_irq:
+        iounmap(whcrc->rc_base);
+error_ioremap_nocache:
+        release_mem_region(whcrc->area, whcrc->rc_len);
+error_request_region:
+        return result;
+}
+
+
+/**
+ * Release RC's UMC resources
+ */
+static
+void whcrc_release_rc_umc(struct whcrc *whcrc)
+{
+        struct umc_dev *umc_dev = whcrc->umc_dev;
+
+        dma_free_coherent(&umc_dev->dev, PAGE_SIZE, whcrc->evt_buf,
+                          whcrc->evt_dma_buf);
+        dma_free_coherent(&umc_dev->dev, PAGE_SIZE, whcrc->cmd_buf,
+                          whcrc->cmd_dma_buf);
+        free_irq(umc_dev->irq, whcrc);
+        iounmap(whcrc->rc_base);
+        release_mem_region(whcrc->area, whcrc->rc_len);
+}
+
+
+/**
+ * whcrc_start_rc - start a WHCI radio controller
+ * @whcrc: the radio controller to start
+ *
+ * Reset the UMC device, start the radio controller, enable events and
+ * finally enable interrupts.
+ */
+static int whcrc_start_rc(struct uwb_rc *rc)
+{
+        struct whcrc *whcrc = rc->priv;
+        int result = 0;
+        struct device *dev = &whcrc->umc_dev->dev;
+        unsigned long start, duration;
+
+        /* Reset the thing */
+        le_writel(URCCMD_RESET, whcrc->rc_base + URCCMD);
+        if (d_test(3))
+                start = jiffies;
+        if (whci_wait_for(dev, whcrc->rc_base + URCCMD, URCCMD_RESET, 0,
+                          5000, "device to reset at init") < 0) {
+                result = -EBUSY;
+                goto error;
+        } else if (d_test(3)) {
+                duration = jiffies - start;
+                if (duration > msecs_to_jiffies(40))
+                        dev_err(dev, "Device took %ums to "
+                                     "reset. MAX expected: 40ms\n",
+                                     jiffies_to_msecs(duration));
+        }
+
+        /* Set the event buffer, start the controller (enable IRQs later) */
+        le_writel(0, whcrc->rc_base + URCINTR);
+        le_writel(URCCMD_RS, whcrc->rc_base + URCCMD);
+        result = -ETIMEDOUT;
+        if (d_test(3))
+                start = jiffies;
+        if (whci_wait_for(dev, whcrc->rc_base + URCSTS, URCSTS_HALTED, 0,
+                          5000, "device to start") < 0)
+                goto error;
+        if (d_test(3)) {
+                duration = jiffies - start;
+                if (duration > msecs_to_jiffies(40))
+                        dev_err(dev, "Device took %ums to start. "
+                                     "MAX expected: 40ms\n",
+                                     jiffies_to_msecs(duration));
+        }
+        whcrc_enable_events(whcrc);
+        result = 0;
+        le_writel(URCINTR_EN_ALL, whcrc->rc_base + URCINTR);
+error:
+        return result;
+}
+
+
+/**
+ * whcrc_stop_rc - stop a WHCI radio controller
+ * @whcrc: the radio controller to stop
+ *
+ * Disable interrupts and cancel any pending event processing work
+ * before clearing the Run/Stop bit.
+ */
+static
+void whcrc_stop_rc(struct uwb_rc *rc)
+{
+        struct whcrc *whcrc = rc->priv;
+        struct umc_dev *umc_dev = whcrc->umc_dev;
+
+        le_writel(0, whcrc->rc_base + URCINTR);
+        cancel_work_sync(&whcrc->event_work);
+
+        le_writel(0, whcrc->rc_base + URCCMD);
+        whci_wait_for(&umc_dev->dev, whcrc->rc_base + URCSTS,
+                      URCSTS_HALTED, 0, 40, "URCSTS.HALTED");
+}
+
+static void whcrc_init(struct whcrc *whcrc)
+{
+        spin_lock_init(&whcrc->irq_lock);
+        init_waitqueue_head(&whcrc->cmd_wq);
+        INIT_WORK(&whcrc->event_work, whcrc_event_work);
+}
+
+/**
+ * Initialize the radio controller.
+ *
+ * NOTE: we setup whcrc->uwb_rc before calling uwb_rc_add(); in the
+ *       IRQ handler we use that to determine if the hw is ready to
+ *       handle events. Looks like a race condition, but it really is
+ *       not.
+ */
+static
+int whcrc_probe(struct umc_dev *umc_dev)
+{
+        int result;
+        struct uwb_rc *uwb_rc;
+        struct whcrc *whcrc;
+        struct device *dev = &umc_dev->dev;
+
+        d_fnstart(3, dev, "(umc_dev %p)\n", umc_dev);
+        result = -ENOMEM;
+        uwb_rc = uwb_rc_alloc();
+        if (uwb_rc == NULL) {
+                dev_err(dev, "unable to allocate RC instance\n");
+                goto error_rc_alloc;
+        }
+        whcrc = kzalloc(sizeof(*whcrc), GFP_KERNEL);
+        if (whcrc == NULL) {
+                dev_err(dev, "unable to allocate WHC-RC instance\n");
+                goto error_alloc;
+        }
+        whcrc_init(whcrc);
+        whcrc->umc_dev = umc_dev;
+
+        result = whcrc_setup_rc_umc(whcrc);
+        if (result < 0) {
+                dev_err(dev, "Can't setup RC UMC interface: %d\n", result);
+                goto error_setup_rc_umc;
+        }
+        whcrc->uwb_rc = uwb_rc;
+
+        uwb_rc->owner = THIS_MODULE;
+        uwb_rc->cmd   = whcrc_cmd;
+        uwb_rc->reset = whcrc_reset;
+        uwb_rc->start = whcrc_start_rc;
+        uwb_rc->stop  = whcrc_stop_rc;
+
+        result = uwb_rc_add(uwb_rc, dev, whcrc);
+        if (result < 0)
+                goto error_rc_add;
+        umc_set_drvdata(umc_dev, whcrc);
+        d_fnend(3, dev, "(umc_dev %p) = 0\n", umc_dev);
+        return 0;
+
+error_rc_add:
+        whcrc_release_rc_umc(whcrc);
+error_setup_rc_umc:
+        kfree(whcrc);
+error_alloc:
+        uwb_rc_put(uwb_rc);
+error_rc_alloc:
+        d_fnend(3, dev, "(umc_dev %p) = %d\n", umc_dev, result);
+        return result;
+}
+
+/**
+ * Clean up the radio control resources
+ *
+ * When we up the command semaphore, everybody possibly held trying to
+ * execute a command should be granted entry and then they'll see the
+ * host is quiescing and up it (so it will chain to the next waiter).
+ * This should not happen (in any case), as we can only remove when
+ * there are no handles open...
+ */
+static void whcrc_remove(struct umc_dev *umc_dev)
+{
+        struct whcrc *whcrc = umc_get_drvdata(umc_dev);
+        struct uwb_rc *uwb_rc = whcrc->uwb_rc;
+
+        umc_set_drvdata(umc_dev, NULL);
+        uwb_rc_rm(uwb_rc);
+        whcrc_release_rc_umc(whcrc);
+        kfree(whcrc);
+        uwb_rc_put(uwb_rc);
+        d_printf(1, &umc_dev->dev, "freed whcrc %p\n", whcrc);
+}
+
+/* PCI device ID's that we handle [so it gets loaded] */
+static struct pci_device_id whcrc_id_table[] = {
+        { PCI_DEVICE_CLASS(PCI_CLASS_WIRELESS_WHCI, ~0) },
+        { /* empty last entry */ }
+};
+MODULE_DEVICE_TABLE(pci, whcrc_id_table);
+
+static struct umc_driver whcrc_driver = {
+        .name   = "whc-rc",
+        .cap_id = UMC_CAP_ID_WHCI_RC,
+        .probe  = whcrc_probe,
+        .remove = whcrc_remove,
+};
+
+static int __init whcrc_driver_init(void)
+{
+        return umc_driver_register(&whcrc_driver);
+}
+module_init(whcrc_driver_init);
+
+static void __exit whcrc_driver_exit(void)
+{
+        umc_driver_unregister(&whcrc_driver);
+}
+module_exit(whcrc_driver_exit);
+
+MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
+MODULE_DESCRIPTION("Wireless Host Controller Radio Control Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/uwb/whci.c b/drivers/uwb/whci.c
new file mode 100644
index 000000000000..3df2388f908f
--- /dev/null
+++ b/drivers/uwb/whci.c
@@ -0,0 +1,269 @@
+/*
+ * WHCI UWB Multi-interface Controller enumerator.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This file is released under the GNU GPL v2.
+ */
+#include <linux/delay.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/uwb/whci.h>
+#include <linux/uwb/umc.h>
+
+struct whci_card {
+        struct pci_dev *pci;
+        void __iomem *uwbbase;
+        u8 n_caps;
+        struct umc_dev *devs[0];
+};
+
+
+/* Fix faulty HW :( */
+static
+u64 whci_capdata_quirks(struct whci_card *card, u64 capdata)
+{
+        u64 capdata_orig = capdata;
+        struct pci_dev *pci_dev = card->pci;
+        if (pci_dev->vendor == PCI_VENDOR_ID_INTEL
+            && (pci_dev->device == 0x0c3b || pci_dev->device == 0004)
+            && pci_dev->class == 0x0d1010) {
+                switch (UWBCAPDATA_TO_CAP_ID(capdata)) {
+                        /* WLP capability has 0x100 bytes of aperture */
+                case 0x80:
+                        capdata |= 0x40 << 8; break;
+                        /* WUSB capability has 0x80 bytes of aperture
+                         * and ID is 1 */
+                case 0x02:
+                        capdata &= ~0xffff;
+                        capdata |= 0x2001;
+                        break;
+                }
+        }
+        if (capdata_orig != capdata)
+                dev_warn(&pci_dev->dev,
+                         "PCI v%04x d%04x c%06x#%02x: "
+                         "corrected capdata from %016Lx to %016Lx\n",
+                         pci_dev->vendor, pci_dev->device, pci_dev->class,
+                         (unsigned)UWBCAPDATA_TO_CAP_ID(capdata),
+                         (unsigned long long)capdata_orig,
+                         (unsigned long long)capdata);
+        return capdata;
+}
+
+
+/**
+ * whci_wait_for - wait for a WHCI register to be set
+ *
+ * Polls (for at most @max_ms ms) until '*@reg & @mask == @result'.
+ */
+int whci_wait_for(struct device *dev, u32 __iomem *reg, u32 mask, u32 result,
+        unsigned long max_ms, const char *tag)
+{
+        unsigned t = 0;
+        u32 val;
+        for (;;) {
+                val = le_readl(reg);
+                if ((val & mask) == result)
+                        break;
+                msleep(10);
+                if (t >= max_ms) {
+                        dev_err(dev, "timed out waiting for %s ", tag);
+                        return -ETIMEDOUT;
+                }
+                t += 10;
+        }
+        return 0;
+}
+EXPORT_SYMBOL_GPL(whci_wait_for);
+
+
+/*
+ * NOTE: the capinfo and capdata registers are slightly different
+ *       (size and cap-id fields). So for cap #0, we need to fill
+ *       in. Size comes from the size of the register block
+ *       (statically calculated); cap_id comes from nowhere, we use
+ *       zero, that is reserved, for the radio controller, because
+ *       none was defined at the spec level.
+ */
+static int whci_add_cap(struct whci_card *card, int n)
+{
+        struct umc_dev *umc;
+        u64 capdata;
+        int bar, err;
+
+        umc = umc_device_create(&card->pci->dev, n);
+        if (umc == NULL)
+                return -ENOMEM;
+
+        capdata = le_readq(card->uwbbase + UWBCAPDATA(n));
+
+        bar = UWBCAPDATA_TO_BAR(capdata) << 1;
+
+        capdata = whci_capdata_quirks(card, capdata);
+        /* Capability 0 is the radio controller. It's size is 32
+         * bytes (WHCI0.95[2.3, T2-9]). */
+        umc->version         = UWBCAPDATA_TO_VERSION(capdata);
+        umc->cap_id          = n == 0 ? 0 : UWBCAPDATA_TO_CAP_ID(capdata);
+        umc->bar             = bar;
+        umc->resource.start  = pci_resource_start(card->pci, bar)
+                + UWBCAPDATA_TO_OFFSET(capdata);
+        umc->resource.end    = umc->resource.start
+                + (n == 0 ? 0x20 : UWBCAPDATA_TO_SIZE(capdata)) - 1;
+        umc->resource.name   = umc->dev.bus_id;
+        umc->resource.flags  = card->pci->resource[bar].flags;
+        umc->resource.parent = &card->pci->resource[bar];
+        umc->irq             = card->pci->irq;
+
+        err = umc_device_register(umc);
+        if (err < 0)
+                goto error;
+        card->devs[n] = umc;
+        return 0;
+
+error:
+        kfree(umc);
+        return err;
+}
+
+static void whci_del_cap(struct whci_card *card, int n)
+{
+        struct umc_dev *umc = card->devs[n];
+
+        if (umc != NULL)
+                umc_device_unregister(umc);
+}
+
+static int whci_n_caps(struct pci_dev *pci)
+{
+        void __iomem *uwbbase;
+        u64 capinfo;
+
+        uwbbase = pci_iomap(pci, 0, 8);
+        if (!uwbbase)
+                return -ENOMEM;
+        capinfo = le_readq(uwbbase + UWBCAPINFO);
+        pci_iounmap(pci, uwbbase);
+
+        return UWBCAPINFO_TO_N_CAPS(capinfo);
+}
+
+static int whci_probe(struct pci_dev *pci, const struct pci_device_id *id)
+{
+        struct whci_card *card;
+        int err, n_caps, n;
+
+        err = pci_enable_device(pci);
+        if (err < 0)
+                goto error;
+        pci_enable_msi(pci);
+        pci_set_master(pci);
+        err = -ENXIO;
+        if (!pci_set_dma_mask(pci, DMA_64BIT_MASK))
+                pci_set_consistent_dma_mask(pci, DMA_64BIT_MASK);
+        else if (!pci_set_dma_mask(pci, DMA_32BIT_MASK))
+                pci_set_consistent_dma_mask(pci, DMA_32BIT_MASK);
+        else
+                goto error_dma;
+
+        err = n_caps = whci_n_caps(pci);
+        if (n_caps < 0)
+                goto error_ncaps;
+
+        err = -ENOMEM;
+        card = kzalloc(sizeof(struct whci_card)
+                       + sizeof(struct whci_dev *) * (n_caps + 1),
+                       GFP_KERNEL);
+        if (card == NULL)
+                goto error_kzalloc;
+        card->pci = pci;
+        card->n_caps = n_caps;
+
+        err = -EBUSY;
+        if (!request_mem_region(pci_resource_start(pci, 0),
+                                UWBCAPDATA_SIZE(card->n_caps),
+                                "whci (capability data)"))
+                goto error_request_memregion;
+        err = -ENOMEM;
+        card->uwbbase = pci_iomap(pci, 0, UWBCAPDATA_SIZE(card->n_caps));
+        if (!card->uwbbase)
+                goto error_iomap;
+
+        /* Add each capability. */
+        for (n = 0; n <= card->n_caps; n++) {
+                err = whci_add_cap(card, n);
+                if (err < 0 && n == 0) {
+                        dev_err(&pci->dev, "cannot bind UWB radio controller:"
+                                " %d\n", err);
+                        goto error_bind;
+                }
+                if (err < 0)
+                        dev_warn(&pci->dev, "warning: cannot bind capability "
+                                 "#%u: %d\n", n, err);
+        }
+        pci_set_drvdata(pci, card);
+        return 0;
+
+error_bind:
+        pci_iounmap(pci, card->uwbbase);
+error_iomap:
+        release_mem_region(pci_resource_start(pci, 0), UWBCAPDATA_SIZE(card->n_caps));
+error_request_memregion:
+        kfree(card);
+error_kzalloc:
+error_ncaps:
+error_dma:
+        pci_disable_msi(pci);
+        pci_disable_device(pci);
+error:
+        return err;
+}
+
+static void whci_remove(struct pci_dev *pci)
+{
+        struct whci_card *card = pci_get_drvdata(pci);
+        int n;
+
+        pci_set_drvdata(pci, NULL);
+        /* Unregister each capability in reverse (so the master device
+         * is unregistered last). */
+        for (n = card->n_caps; n >= 0 ; n--)
+                whci_del_cap(card, n);
+        pci_iounmap(pci, card->uwbbase);
+        release_mem_region(pci_resource_start(pci, 0), UWBCAPDATA_SIZE(card->n_caps));
+        kfree(card);
+        pci_disable_msi(pci);
+        pci_disable_device(pci);
+}
+
+static struct pci_device_id whci_id_table[] = {
+        { PCI_DEVICE_CLASS(PCI_CLASS_WIRELESS_WHCI, ~0) },
+        { 0 },
+};
+MODULE_DEVICE_TABLE(pci, whci_id_table);
+
+
+static struct pci_driver whci_driver = {
+        .name     = "whci",
+        .id_table = whci_id_table,
+        .probe    = whci_probe,
+        .remove   = whci_remove,
+};
+
+static int __init whci_init(void)
+{
+        return pci_register_driver(&whci_driver);
+}
+
+static void __exit whci_exit(void)
+{
+        pci_unregister_driver(&whci_driver);
+}
+
+module_init(whci_init);
+module_exit(whci_exit);
+
+MODULE_DESCRIPTION("WHCI UWB Multi-interface Controller enumerator");
+MODULE_AUTHOR("Cambridge Silicon Radio Ltd.");
+MODULE_LICENSE("GPL");
diff --git a/drivers/uwb/wlp/Makefile b/drivers/uwb/wlp/Makefile
new file mode 100644
index 000000000000..c72c11db5b1b
--- /dev/null
+++ b/drivers/uwb/wlp/Makefile
@@ -0,0 +1,10 @@
+obj-$(CONFIG_UWB_WLP) := wlp.o
+
+wlp-objs :=     \
+        driver.o        \
+        eda.o           \
+        messages.o      \
+        sysfs.o         \
+        txrx.o          \
+        wlp-lc.o        \
+        wss-lc.o
diff --git a/drivers/uwb/wlp/driver.c b/drivers/uwb/wlp/driver.c
new file mode 100644
index 000000000000..cb8d699b6a67
--- /dev/null
+++ b/drivers/uwb/wlp/driver.c
@@ -0,0 +1,43 @@
+/*
+ * WiMedia Logical Link Control Protocol (WLP)
+ *
+ * Copyright (C) 2007 Intel Corporation
+ * Reinette Chatre <reinette.chatre@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * Life cycle of WLP substack
+ *
+ * FIXME: Docs
+ */
+
+#include <linux/module.h>
+
+static int __init wlp_subsys_init(void)
+{
+        return 0;
+}
+module_init(wlp_subsys_init);
+
+static void __exit wlp_subsys_exit(void)
+{
+        return;
+}
+module_exit(wlp_subsys_exit);
+
+MODULE_AUTHOR("Reinette Chatre <reinette.chatre@intel.com>");
+MODULE_DESCRIPTION("WiMedia Logical Link Control Protocol (WLP)");
+MODULE_LICENSE("GPL");
diff --git a/drivers/uwb/wlp/eda.c b/drivers/uwb/wlp/eda.c
new file mode 100644
index 000000000000..cdfe8dfc4340
--- /dev/null
+++ b/drivers/uwb/wlp/eda.c
@@ -0,0 +1,449 @@
+/*
+ * WUSB Wire Adapter: WLP interface
+ * Ethernet to device address cache
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * We need to be able to map ethernet addresses to device addresses
+ * and back because there is not explicit relationship between the eth
+ * addresses used in the ETH frames and the device addresses (no, it
+ * would not have been simpler to force as ETH address the MBOA MAC
+ * address...no, not at all :).
+ *
+ * A device has one MBOA MAC address and one device address. It is possible
+ * for a device to have more than one virtual MAC address (although a
+ * virtual address can be the same as the MBOA MAC address). The device
+ * address is guaranteed to be unique among the devices in the extended
+ * beacon group (see ECMA 17.1.1). We thus use the device address as index
+ * to this cache. We do allow searching based on virtual address as this
+ * is how Ethernet frames will be addressed.
+ *
+ * We need to support virtual EUI-48. Although, right now the virtual
+ * EUI-48 will always be the same as the MAC SAP address. The EDA cache
+ * entry thus contains a MAC SAP address as well as the virtual address
+ * (used to map the network stack address to a neighbor). When we move
+ * to support more than one virtual MAC on a host then this organization
+ * will have to change. Perhaps a neighbor has a list of WSSs, each with a
+ * tag and virtual EUI-48.
+ *
+ * On data transmission
+ * it is used to determine if the neighbor is connected and what WSS it
+ * belongs to. With this we know what tag to add to the WLP frame. Storing
+ * the WSS in the EDA cache may be overkill because we only support one
+ * WSS. Hopefully we will support more than one WSS at some point.
+ * On data reception it is used to determine the WSS based on
+ * the tag and address of the transmitting neighbor.
+ */
+
+#define D_LOCAL 5
+#include <linux/netdevice.h>
+#include <linux/uwb/debug.h>
+#include <linux/etherdevice.h>
+#include <linux/wlp.h>
+#include "wlp-internal.h"
+
+
+/* FIXME: cache is not purged, only on device close */
+
+/* FIXME: does not scale, change to dynamic array */
+
+/*
+ * Initialize the EDA cache
+ *
+ * @returns 0 if ok, < 0 errno code on error
+ *
+ * Call when the interface is being brought up
+ *
+ * NOTE: Keep it as a separate function as the implementation will
+ *       change and be more complex.
+ */
+void wlp_eda_init(struct wlp_eda *eda)
+{
+        INIT_LIST_HEAD(&eda->cache);
+        spin_lock_init(&eda->lock);
+}
+
+/*
+ * Release the EDA cache
+ *
+ * @returns 0 if ok, < 0 errno code on error
+ *
+ * Called when the interface is brought down
+ */
+void wlp_eda_release(struct wlp_eda *eda)
+{
+        unsigned long flags;
+        struct wlp_eda_node *itr, *next;
+
+        spin_lock_irqsave(&eda->lock, flags);
+        list_for_each_entry_safe(itr, next, &eda->cache, list_node) {
+                list_del(&itr->list_node);
+                kfree(itr);
+        }
+        spin_unlock_irqrestore(&eda->lock, flags);
+}
+
+/*
+ * Add an address mapping
+ *
+ * @returns 0 if ok, < 0 errno code on error
+ *
+ * An address mapping is initially created when the neighbor device is seen
+ * for the first time (it is "onair"). At this time the neighbor is not
+ * connected or associated with a WSS so we only populate the Ethernet and
+ * Device address fields.
+ *
+ */
+int wlp_eda_create_node(struct wlp_eda *eda,
+                        const unsigned char eth_addr[ETH_ALEN],
+                        const struct uwb_dev_addr *dev_addr)
+{
+        int result = 0;
+        struct wlp_eda_node *itr;
+        unsigned long flags;
+
+        BUG_ON(dev_addr == NULL || eth_addr == NULL);
+        spin_lock_irqsave(&eda->lock, flags);
+        list_for_each_entry(itr, &eda->cache, list_node) {
+                if (!memcmp(&itr->dev_addr, dev_addr, sizeof(itr->dev_addr))) {
+                        printk(KERN_ERR "EDA cache already contains entry "
+                               "for neighbor %02x:%02x\n",
+                               dev_addr->data[1], dev_addr->data[0]);
+                        result = -EEXIST;
+                        goto out_unlock;
+                }
+        }
+        itr = kzalloc(sizeof(*itr), GFP_ATOMIC);
+        if (itr != NULL) {
+                memcpy(itr->eth_addr, eth_addr, sizeof(itr->eth_addr));
+                itr->dev_addr = *dev_addr;
+                list_add(&itr->list_node, &eda->cache);
+        } else
+                result = -ENOMEM;
+out_unlock:
+        spin_unlock_irqrestore(&eda->lock, flags);
+        return result;
+}
+
+/*
+ * Remove entry from EDA cache
+ *
+ * This is done when the device goes off air.
+ */
+void wlp_eda_rm_node(struct wlp_eda *eda, const struct uwb_dev_addr *dev_addr)
+{
+        struct wlp_eda_node *itr, *next;
+        unsigned long flags;
+
+        spin_lock_irqsave(&eda->lock, flags);
+        list_for_each_entry_safe(itr, next, &eda->cache, list_node) {
+                if (!memcmp(&itr->dev_addr, dev_addr, sizeof(itr->dev_addr))) {
+                        list_del(&itr->list_node);
+                        kfree(itr);
+                        break;
+                }
+        }
+        spin_unlock_irqrestore(&eda->lock, flags);
+}
+
+/*
+ * Update an address mapping
+ *
+ * @returns 0 if ok, < 0 errno code on error
+ */
+int wlp_eda_update_node(struct wlp_eda *eda,
+                        const struct uwb_dev_addr *dev_addr,
+                        struct wlp_wss *wss,
+                        const unsigned char virt_addr[ETH_ALEN],
+                        const u8 tag, const enum wlp_wss_connect state)
+{
+        int result = -ENOENT;
+        struct wlp_eda_node *itr;
+        unsigned long flags;
+
+        spin_lock_irqsave(&eda->lock, flags);
+        list_for_each_entry(itr, &eda->cache, list_node) {
+                if (!memcmp(&itr->dev_addr, dev_addr, sizeof(itr->dev_addr))) {
+                        /* Found it, update it */
+                        itr->wss = wss;
+                        memcpy(itr->virt_addr, virt_addr,
+                               sizeof(itr->virt_addr));
+                        itr->tag = tag;
+                        itr->state = state;
+                        result = 0;
+                        goto out_unlock;
+                }
+        }
+        /* Not found */
+out_unlock:
+        spin_unlock_irqrestore(&eda->lock, flags);
+        return result;
+}
+
+/*
+ * Update only state field of an address mapping
+ *
+ * @returns 0 if ok, < 0 errno code on error
+ */
+int wlp_eda_update_node_state(struct wlp_eda *eda,
+                              const struct uwb_dev_addr *dev_addr,
+                              const enum wlp_wss_connect state)
+{
+        int result = -ENOENT;
+        struct wlp_eda_node *itr;
+        unsigned long flags;
+
+        spin_lock_irqsave(&eda->lock, flags);
+        list_for_each_entry(itr, &eda->cache, list_node) {
+                if (!memcmp(&itr->dev_addr, dev_addr, sizeof(itr->dev_addr))) {
+                        /* Found it, update it */
+                        itr->state = state;
+                        result = 0;
+                        goto out_unlock;
+                }
+        }
+        /* Not found */
+out_unlock:
+        spin_unlock_irqrestore(&eda->lock, flags);
+        return result;
+}
+
+/*
+ * Return contents of EDA cache entry
+ *
+ * @dev_addr: index to EDA cache
+ * @eda_entry: pointer to where contents of EDA cache will be copied
+ */
+int wlp_copy_eda_node(struct wlp_eda *eda, struct uwb_dev_addr *dev_addr,
+                      struct wlp_eda_node *eda_entry)
+{
+        int result = -ENOENT;
+        struct wlp_eda_node *itr;
+        unsigned long flags;
+
+        spin_lock_irqsave(&eda->lock, flags);
+        list_for_each_entry(itr, &eda->cache, list_node) {
+                if (!memcmp(&itr->dev_addr, dev_addr, sizeof(itr->dev_addr))) {
+                        *eda_entry = *itr;
+                        result = 0;
+                        goto out_unlock;
+                }
+        }
+        /* Not found */
+out_unlock:
+        spin_unlock_irqrestore(&eda->lock, flags);
+        return result;
+}
+
+/*
+ * Execute function for every element in the cache
+ *
+ * @function: function to execute on element of cache (must be atomic)
+ * @priv:     private data of function
+ * @returns:  result of first function that failed, or last function
+ *            executed if no function failed.
+ *
+ * Stop executing when function returns error for any element in cache.
+ *
+ * IMPORTANT: We are using a spinlock here: the function executed on each
+ * element has to be atomic.
+ */
+int wlp_eda_for_each(struct wlp_eda *eda, wlp_eda_for_each_f function,
+                     void *priv)
+{
+        int result = 0;
+        struct wlp *wlp = container_of(eda, struct wlp, eda);
+        struct wlp_eda_node *entry;
+        unsigned long flags;
+
+        spin_lock_irqsave(&eda->lock, flags);
+        list_for_each_entry(entry, &eda->cache, list_node) {
+                result = (*function)(wlp, entry, priv);
+                if (result < 0)
+                        break;
+        }
+        spin_unlock_irqrestore(&eda->lock, flags);
+        return result;
+}
+
+/*
+ * Execute function for single element in the cache (return dev addr)
+ *
+ * @virt_addr: index into EDA cache used to determine which element to
+ *             execute the function on
+ * @dev_addr: device address of element in cache will be returned using
+ *            @dev_addr
+ * @function: function to execute on element of cache (must be atomic)
+ * @priv:     private data of function
+ * @returns:  result of function
+ *
+ * IMPORTANT: We are using a spinlock here: the function executed on the
+ * element has to be atomic.
+ */
+int wlp_eda_for_virtual(struct wlp_eda *eda,
+                        const unsigned char virt_addr[ETH_ALEN],
+                        struct uwb_dev_addr *dev_addr,
+                        wlp_eda_for_each_f function,
+                        void *priv)
+{
+        int result = 0;
+        struct wlp *wlp = container_of(eda, struct wlp, eda);
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        struct wlp_eda_node *itr;
+        unsigned long flags;
+        int found = 0;
+
+        spin_lock_irqsave(&eda->lock, flags);
+        list_for_each_entry(itr, &eda->cache, list_node) {
+                if (!memcmp(itr->virt_addr, virt_addr,
+                           sizeof(itr->virt_addr))) {
+                        d_printf(6, dev, "EDA: looking for "
+                               "%02x:%02x:%02x:%02x:%02x:%02x hit %02x:%02x "
+                               "wss %p tag 0x%02x state %u\n",
+                               virt_addr[0], virt_addr[1],
+                               virt_addr[2], virt_addr[3],
+                               virt_addr[4], virt_addr[5],
+                               itr->dev_addr.data[1],
+                               itr->dev_addr.data[0], itr->wss,
+                               itr->tag, itr->state);
+                        result = (*function)(wlp, itr, priv);
+                        *dev_addr = itr->dev_addr;
+                        found = 1;
+                        break;
+                } else
+                        d_printf(6, dev, "EDA: looking for "
+                               "%02x:%02x:%02x:%02x:%02x:%02x "
+                               "against "
+                               "%02x:%02x:%02x:%02x:%02x:%02x miss\n",
+                               virt_addr[0], virt_addr[1],
+                               virt_addr[2], virt_addr[3],
+                               virt_addr[4], virt_addr[5],
+                               itr->virt_addr[0], itr->virt_addr[1],
+                               itr->virt_addr[2], itr->virt_addr[3],
+                               itr->virt_addr[4], itr->virt_addr[5]);
+        }
+        if (!found) {
+                if (printk_ratelimit())
+                        dev_err(dev, "EDA: Eth addr %02x:%02x:%02x"
+                                ":%02x:%02x:%02x not found.\n",
+                                virt_addr[0], virt_addr[1],
+                                virt_addr[2], virt_addr[3],
+                                virt_addr[4], virt_addr[5]);
+                result = -ENODEV;
+        }
+        spin_unlock_irqrestore(&eda->lock, flags);
+        return result;
+}
+
+static const char *__wlp_wss_connect_state[] = { "WLP_WSS_UNCONNECTED",
+                                          "WLP_WSS_CONNECTED",
+                                          "WLP_WSS_CONNECT_FAILED",
+};
+
+static const char *wlp_wss_connect_state_str(unsigned id)
+{
+        if (id >= ARRAY_SIZE(__wlp_wss_connect_state))
+                return "unknown WSS connection state";
+        return __wlp_wss_connect_state[id];
+}
+
+/*
+ * View EDA cache from user space
+ *
+ * A debugging feature to give user visibility into the EDA cache. Also
+ * used to display members of WSS to user (called from wlp_wss_members_show())
+ */
+ssize_t wlp_eda_show(struct wlp *wlp, char *buf)
+{
+        ssize_t result = 0;
+        struct wlp_eda_node *entry;
+        unsigned long flags;
+        struct wlp_eda *eda = &wlp->eda;
+        spin_lock_irqsave(&eda->lock, flags);
+        result = scnprintf(buf, PAGE_SIZE, "#eth_addr dev_addr wss_ptr "
+                           "tag state virt_addr\n");
+        list_for_each_entry(entry, &eda->cache, list_node) {
+                result += scnprintf(buf + result, PAGE_SIZE - result,
+                                    "%02x:%02x:%02x:%02x:%02x:%02x %02x:%02x "
+                                    "%p 0x%02x %s "
+                                    "%02x:%02x:%02x:%02x:%02x:%02x\n",
+                                    entry->eth_addr[0], entry->eth_addr[1],
+                                    entry->eth_addr[2], entry->eth_addr[3],
+                                    entry->eth_addr[4], entry->eth_addr[5],
+                                    entry->dev_addr.data[1],
+                                    entry->dev_addr.data[0], entry->wss,
+                                    entry->tag,
+                                    wlp_wss_connect_state_str(entry->state),
+                                    entry->virt_addr[0], entry->virt_addr[1],
+                                    entry->virt_addr[2], entry->virt_addr[3],
+                                    entry->virt_addr[4], entry->virt_addr[5]);
+                if (result >= PAGE_SIZE)
+                        break;
+        }
+        spin_unlock_irqrestore(&eda->lock, flags);
+        return result;
+}
+EXPORT_SYMBOL_GPL(wlp_eda_show);
+
+/*
+ * Add new EDA cache entry based on user input in sysfs
+ *
+ * Should only be used for debugging.
+ *
+ * The WSS is assumed to be the only WSS supported. This needs to be
+ * redesigned when we support more than one WSS.
+ */
+ssize_t wlp_eda_store(struct wlp *wlp, const char *buf, size_t size)
+{
+        ssize_t result;
+        struct wlp_eda *eda = &wlp->eda;
+        u8 eth_addr[6];
+        struct uwb_dev_addr dev_addr;
+        u8 tag;
+        unsigned state;
+
+        result = sscanf(buf, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx "
+                        "%02hhx:%02hhx %02hhx %u\n",
+                        &eth_addr[0], &eth_addr[1],
+                        &eth_addr[2], &eth_addr[3],
+                        &eth_addr[4], &eth_addr[5],
+                        &dev_addr.data[1], &dev_addr.data[0], &tag, &state);
+        switch (result) {
+        case 6: /* no dev addr specified -- remove entry NOT IMPLEMENTED */
+                /*result = wlp_eda_rm(eda, eth_addr, &dev_addr);*/
+                result = -ENOSYS;
+                break;
+        case 10:
+                state = state >= 1 ? 1 : 0;
+                result = wlp_eda_create_node(eda, eth_addr, &dev_addr);
+                if (result < 0 && result != -EEXIST)
+                        goto error;
+                /* Set virtual addr to be same as MAC */
+                result = wlp_eda_update_node(eda, &dev_addr, &wlp->wss,
+                                             eth_addr, tag, state);
+                if (result < 0)
+                        goto error;
+                break;
+        default: /* bad format */
+                result = -EINVAL;
+        }
+error:
+        return result < 0 ? result : size;
+}
+EXPORT_SYMBOL_GPL(wlp_eda_store);
diff --git a/drivers/uwb/wlp/messages.c b/drivers/uwb/wlp/messages.c
new file mode 100644
index 000000000000..a64cb8241713
--- /dev/null
+++ b/drivers/uwb/wlp/messages.c
@@ -0,0 +1,1946 @@
+/*
+ * WiMedia Logical Link Control Protocol (WLP)
+ * Message construction and parsing
+ *
+ * Copyright (C) 2007 Intel Corporation
+ * Reinette Chatre <reinette.chatre@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ */
+
+#include <linux/wlp.h>
+#define D_LOCAL 6
+#include <linux/uwb/debug.h>
+#include "wlp-internal.h"
+
+static
+const char *__wlp_assoc_frame[] = {
+        [WLP_ASSOC_D1] = "WLP_ASSOC_D1",
+        [WLP_ASSOC_D2] = "WLP_ASSOC_D2",
+        [WLP_ASSOC_M1] = "WLP_ASSOC_M1",
+        [WLP_ASSOC_M2] = "WLP_ASSOC_M2",
+        [WLP_ASSOC_M3] = "WLP_ASSOC_M3",
+        [WLP_ASSOC_M4] = "WLP_ASSOC_M4",
+        [WLP_ASSOC_M5] = "WLP_ASSOC_M5",
+        [WLP_ASSOC_M6] = "WLP_ASSOC_M6",
+        [WLP_ASSOC_M7] = "WLP_ASSOC_M7",
+        [WLP_ASSOC_M8] = "WLP_ASSOC_M8",
+        [WLP_ASSOC_F0] = "WLP_ASSOC_F0",
+        [WLP_ASSOC_E1] = "WLP_ASSOC_E1",
+        [WLP_ASSOC_E2] = "WLP_ASSOC_E2",
+        [WLP_ASSOC_C1] = "WLP_ASSOC_C1",
+        [WLP_ASSOC_C2] = "WLP_ASSOC_C2",
+        [WLP_ASSOC_C3] = "WLP_ASSOC_C3",
+        [WLP_ASSOC_C4] = "WLP_ASSOC_C4",
+};
+
+static const char *wlp_assoc_frame_str(unsigned id)
+{
+        if (id >= ARRAY_SIZE(__wlp_assoc_frame))
+                return "unknown association frame";
+        return __wlp_assoc_frame[id];
+}
+
+static const char *__wlp_assc_error[] = {
+        "none",
+        "Authenticator Failure",
+        "Rogue activity suspected",
+        "Device busy",
+        "Setup Locked",
+        "Registrar not ready",
+        "Invalid WSS selection",
+        "Message timeout",
+        "Enrollment session timeout",
+        "Device password invalid",
+        "Unsupported version",
+        "Internal error",
+        "Undefined error",
+        "Numeric comparison failure",
+        "Waiting for user input",
+};
+
+static const char *wlp_assc_error_str(unsigned id)
+{
+        if (id >= ARRAY_SIZE(__wlp_assc_error))
+                return "unknown WLP association error";
+        return __wlp_assc_error[id];
+}
+
+static inline void wlp_set_attr_hdr(struct wlp_attr_hdr *hdr, unsigned type,
+                                    size_t len)
+{
+        hdr->type = cpu_to_le16(type);
+        hdr->length = cpu_to_le16(len);
+}
+
+/*
+ * Populate fields of a constant sized attribute
+ *
+ * @returns: total size of attribute including size of new value
+ *
+ * We have two instances of this function (wlp_pset and wlp_set): one takes
+ * the value as a parameter, the other takes a pointer to the value as
+ * parameter. They thus only differ in how the value is assigned to the
+ * attribute.
+ *
+ * We use sizeof(*attr) - sizeof(struct wlp_attr_hdr) instead of
+ * sizeof(type) to be able to use this same code for the structures that
+ * contain 8bit enum values and be able to deal with pointer types.
+ */
+#define wlp_set(type, type_code, name)                                  \
+static size_t wlp_set_##name(struct wlp_attr_##name *attr, type value)  \
+{                                                                       \
+        d_fnstart(6, NULL, "(attribute %p)\n", attr);                   \
+        wlp_set_attr_hdr(&attr->hdr, type_code,                         \
+                         sizeof(*attr) - sizeof(struct wlp_attr_hdr));  \
+        attr->name = value;                                             \
+        d_dump(6, NULL, attr, sizeof(*attr));                           \
+        d_fnend(6, NULL, "(attribute %p)\n", attr);                     \
+        return sizeof(*attr);                                           \
+}
+
+#define wlp_pset(type, type_code, name)                                 \
+static size_t wlp_set_##name(struct wlp_attr_##name *attr, type value)  \
+{                                                                       \
+        d_fnstart(6, NULL, "(attribute %p)\n", attr);                   \
+        wlp_set_attr_hdr(&attr->hdr, type_code,                         \
+                         sizeof(*attr) - sizeof(struct wlp_attr_hdr));  \
+        attr->name = *value;                                            \
+        d_dump(6, NULL, attr, sizeof(*attr));                           \
+        d_fnend(6, NULL, "(attribute %p)\n", attr);                     \
+        return sizeof(*attr);                                           \
+}
+
+/**
+ * Populate fields of a variable attribute
+ *
+ * @returns: total size of attribute including size of new value
+ *
+ * Provided with a pointer to the memory area reserved for the
+ * attribute structure, the field is populated with the value. The
+ * reserved memory has to contain enough space for the value.
+ */
+#define wlp_vset(type, type_code, name)                                 \
+static size_t wlp_set_##name(struct wlp_attr_##name *attr, type value,  \
+                                size_t len)                             \
+{                                                                       \
+        d_fnstart(6, NULL, "(attribute %p)\n", attr);                   \
+        wlp_set_attr_hdr(&attr->hdr, type_code, len);                   \
+        memcpy(attr->name, value, len);                                 \
+        d_dump(6, NULL, attr, sizeof(*attr) + len);                     \
+        d_fnend(6, NULL, "(attribute %p)\n", attr);                     \
+        return sizeof(*attr) + len;                                     \
+}
+
+wlp_vset(char *, WLP_ATTR_DEV_NAME, dev_name)
+wlp_vset(char *, WLP_ATTR_MANUF, manufacturer)
+wlp_set(enum wlp_assoc_type, WLP_ATTR_MSG_TYPE, msg_type)
+wlp_vset(char *, WLP_ATTR_MODEL_NAME, model_name)
+wlp_vset(char *, WLP_ATTR_MODEL_NR, model_nr)
+wlp_vset(char *, WLP_ATTR_SERIAL, serial)
+wlp_vset(char *, WLP_ATTR_WSS_NAME, wss_name)
+wlp_pset(struct wlp_uuid *, WLP_ATTR_UUID_E, uuid_e)
+wlp_pset(struct wlp_uuid *, WLP_ATTR_UUID_R, uuid_r)
+wlp_pset(struct wlp_uuid *, WLP_ATTR_WSSID, wssid)
+wlp_pset(struct wlp_dev_type *, WLP_ATTR_PRI_DEV_TYPE, prim_dev_type)
+/*wlp_pset(struct wlp_dev_type *, WLP_ATTR_SEC_DEV_TYPE, sec_dev_type)*/
+wlp_set(u8, WLP_ATTR_WLP_VER, version)
+wlp_set(enum wlp_assc_error, WLP_ATTR_WLP_ASSC_ERR, wlp_assc_err)
+wlp_set(enum wlp_wss_sel_mthd, WLP_ATTR_WSS_SEL_MTHD, wss_sel_mthd)
+wlp_set(u8, WLP_ATTR_ACC_ENRL, accept_enrl)
+wlp_set(u8, WLP_ATTR_WSS_SEC_STAT, wss_sec_status)
+wlp_pset(struct uwb_mac_addr *, WLP_ATTR_WSS_BCAST, wss_bcast)
+wlp_pset(struct wlp_nonce *, WLP_ATTR_ENRL_NONCE, enonce)
+wlp_pset(struct wlp_nonce *, WLP_ATTR_REG_NONCE, rnonce)
+wlp_set(u8, WLP_ATTR_WSS_TAG, wss_tag)
+wlp_pset(struct uwb_mac_addr *, WLP_ATTR_WSS_VIRT, wss_virt)
+
+/**
+ * Fill in the WSS information attributes
+ *
+ * We currently only support one WSS, and this is assumed in this function
+ * that can populate only one WSS information attribute.
+ */
+static size_t wlp_set_wss_info(struct wlp_attr_wss_info *attr,
+                               struct wlp_wss *wss)
+{
+        size_t datalen;
+        void *ptr = attr->wss_info;
+        size_t used = sizeof(*attr);
+        d_fnstart(6, NULL, "(attribute %p)\n", attr);
+        datalen = sizeof(struct wlp_wss_info) + strlen(wss->name);
+        wlp_set_attr_hdr(&attr->hdr, WLP_ATTR_WSS_INFO, datalen);
+        used = wlp_set_wssid(ptr, &wss->wssid);
+        used += wlp_set_wss_name(ptr + used, wss->name, strlen(wss->name));
+        used += wlp_set_accept_enrl(ptr + used, wss->accept_enroll);
+        used += wlp_set_wss_sec_status(ptr + used, wss->secure_status);
+        used += wlp_set_wss_bcast(ptr + used, &wss->bcast);
+        d_dump(6, NULL, attr, sizeof(*attr) + datalen);
+        d_fnend(6, NULL, "(attribute %p, used %d)\n",
+                attr, (int)(sizeof(*attr) + used));
+        return sizeof(*attr) + used;
+}
+
+/**
+ * Verify attribute header
+ *
+ * @hdr:     Pointer to attribute header that will be verified.
+ * @type:    Expected attribute type.
+ * @len:     Expected length of attribute value (excluding header).
+ *
+ * Most attribute values have a known length even when they do have a
+ * length field. This knowledge can be used via this function to verify
+ * that the length field matches the expected value.
+ */
+static int wlp_check_attr_hdr(struct wlp *wlp, struct wlp_attr_hdr *hdr,
+                       enum wlp_attr_type type, unsigned len)
+{
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+
+        if (le16_to_cpu(hdr->type) != type) {
+                dev_err(dev, "WLP: unexpected header type. Expected "
+                        "%u, got %u.\n", type, le16_to_cpu(hdr->type));
+                return -EINVAL;
+        }
+        if (le16_to_cpu(hdr->length) != len) {
+                dev_err(dev, "WLP: unexpected length in header. Expected "
+                        "%u, got %u.\n", len, le16_to_cpu(hdr->length));
+                return -EINVAL;
+        }
+        return 0;
+}
+
+/**
+ * Check if header of WSS information attribute valid
+ *
+ * @returns: length of WSS attributes (value of length attribute field) if
+ *             valid WSS information attribute found
+ *           -ENODATA if no WSS information attribute found
+ *           -EIO other error occured
+ *
+ * The WSS information attribute is optional. The function will be provided
+ * with a pointer to data that could _potentially_ be a WSS information
+ * attribute. If a valid WSS information attribute is found it will return
+ * 0, if no WSS information attribute is found it will return -ENODATA, and
+ * another error will be returned if it is a WSS information attribute, but
+ * some parsing failure occured.
+ */
+static int wlp_check_wss_info_attr_hdr(struct wlp *wlp,
+                                       struct wlp_attr_hdr *hdr, size_t buflen)
+{
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        size_t len;
+        int result = 0;
+
+        if (buflen < sizeof(*hdr)) {
+                dev_err(dev, "WLP: Not enough space in buffer to parse"
+                        " WSS information attribute header.\n");
+                result = -EIO;
+                goto out;
+        }
+        if (le16_to_cpu(hdr->type) != WLP_ATTR_WSS_INFO) {
+                /* WSS information is optional */
+                result = -ENODATA;
+                goto out;
+        }
+        len = le16_to_cpu(hdr->length);
+        if (buflen < sizeof(*hdr) + len) {
+                dev_err(dev, "WLP: Not enough space in buffer to parse "
+                        "variable data. Got %d, expected %d.\n",
+                        (int)buflen, (int)(sizeof(*hdr) + len));
+                result = -EIO;
+                goto out;
+        }
+        result = len;
+out:
+        return result;
+}
+
+
+/**
+ * Get value of attribute from fixed size attribute field.
+ *
+ * @attr:    Pointer to attribute field.
+ * @value:   Pointer to variable in which attribute value will be placed.
+ * @buflen:  Size of buffer in which attribute field (including header)
+ *           can be found.
+ * @returns: Amount of given buffer consumed by parsing for this attribute.
+ *
+ * The size and type of the value is known by the type of the attribute.
+ */
+#define wlp_get(type, type_code, name)                                  \
+ssize_t wlp_get_##name(struct wlp *wlp, struct wlp_attr_##name *attr,   \
+                      type *value, ssize_t buflen)                      \
+{                                                                       \
+        struct device *dev = &wlp->rc->uwb_dev.dev;                     \
+        if (buflen < 0)                                                 \
+                return -EINVAL;                                         \
+        if (buflen < sizeof(*attr)) {                                   \
+                dev_err(dev, "WLP: Not enough space in buffer to parse" \
+                        " attribute field. Need %d, received %zu\n",    \
+                        (int)sizeof(*attr), buflen);                    \
+                return -EIO;                                            \
+        }                                                               \
+        if (wlp_check_attr_hdr(wlp, &attr->hdr, type_code,              \
+                               sizeof(attr->name)) < 0) {               \
+                dev_err(dev, "WLP: Header verification failed. \n");    \
+                return -EINVAL;                                         \
+        }                                                               \
+        *value = attr->name;                                            \
+        return sizeof(*attr);                                           \
+}
+
+#define wlp_get_sparse(type, type_code, name) \
+        static wlp_get(type, type_code, name)
+
+/**
+ * Get value of attribute from variable sized attribute field.
+ *
+ * @max:     The maximum size of this attribute. This value is dictated by
+ *           the maximum value from the WLP specification.
+ *
+ * @attr:    Pointer to attribute field.
+ * @value:   Pointer to variable that will contain the value. The memory
+ *           must already have been allocated for this value.
+ * @buflen:  Size of buffer in which attribute field (including header)
+ *           can be found.
+ * @returns: Amount of given bufferconsumed by parsing for this attribute.
+ */
+#define wlp_vget(type_val, type_code, name, max)                        \
+static ssize_t wlp_get_##name(struct wlp *wlp,                          \
+                              struct wlp_attr_##name *attr,             \
+                              type_val *value, ssize_t buflen)          \
+{                                                                       \
+        struct device *dev = &wlp->rc->uwb_dev.dev;                     \
+        size_t len;                                                     \
+        if (buflen < 0)                                                 \
+                return -EINVAL;                                         \
+        if (buflen < sizeof(*attr)) {                                   \
+                dev_err(dev, "WLP: Not enough space in buffer to parse" \
+                        " header.\n");                                  \
+                return -EIO;                                            \
+        }                                                               \
+        if (le16_to_cpu(attr->hdr.type) != type_code) {                 \
+                dev_err(dev, "WLP: Unexpected attribute type. Got %u, " \
+                        "expected %u.\n", le16_to_cpu(attr->hdr.type),  \
+                        type_code);                                     \
+                return -EINVAL;                                         \
+        }                                                               \
+        len = le16_to_cpu(attr->hdr.length);                            \
+        if (len > max) {                                                \
+                dev_err(dev, "WLP: Attribute larger than maximum "      \
+                        "allowed. Received %zu, max is %d.\n", len,     \
+                        (int)max);                                      \
+                return -EFBIG;                                          \
+        }                                                               \
+        if (buflen < sizeof(*attr) + len) {                             \
+                dev_err(dev, "WLP: Not enough space in buffer to parse "\
+                        "variable data.\n");                            \
+                return -EIO;                                            \
+        }                                                               \
+        memcpy(value, (void *) attr + sizeof(*attr), len);              \
+        return sizeof(*attr) + len;                                     \
+}
+
+wlp_get(u8, WLP_ATTR_WLP_VER, version)
+wlp_get_sparse(enum wlp_wss_sel_mthd, WLP_ATTR_WSS_SEL_MTHD, wss_sel_mthd)
+wlp_get_sparse(struct wlp_dev_type, WLP_ATTR_PRI_DEV_TYPE, prim_dev_type)
+wlp_get_sparse(enum wlp_assc_error, WLP_ATTR_WLP_ASSC_ERR, wlp_assc_err)
+wlp_get_sparse(struct wlp_uuid, WLP_ATTR_UUID_E, uuid_e)
+wlp_get_sparse(struct wlp_uuid, WLP_ATTR_UUID_R, uuid_r)
+wlp_get(struct wlp_uuid, WLP_ATTR_WSSID, wssid)
+wlp_get_sparse(u8, WLP_ATTR_ACC_ENRL, accept_enrl)
+wlp_get_sparse(u8, WLP_ATTR_WSS_SEC_STAT, wss_sec_status)
+wlp_get_sparse(struct uwb_mac_addr, WLP_ATTR_WSS_BCAST, wss_bcast)
+wlp_get_sparse(u8, WLP_ATTR_WSS_TAG, wss_tag)
+wlp_get_sparse(struct uwb_mac_addr, WLP_ATTR_WSS_VIRT, wss_virt)
+wlp_get_sparse(struct wlp_nonce, WLP_ATTR_ENRL_NONCE, enonce)
+wlp_get_sparse(struct wlp_nonce, WLP_ATTR_REG_NONCE, rnonce)
+
+/* The buffers for the device info attributes can be found in the
+ * wlp_device_info struct. These buffers contain one byte more than the
+ * max allowed by the spec - this is done to be able to add the
+ * terminating \0 for user display. This terminating byte is not required
+ * in the actual attribute field (because it has a length field) so the
+ * maximum allowed for this value is one less than its size in the
+ * structure.
+ */
+wlp_vget(char, WLP_ATTR_WSS_NAME, wss_name,
+         FIELD_SIZEOF(struct wlp_wss, name) - 1)
+wlp_vget(char, WLP_ATTR_DEV_NAME, dev_name,
+         FIELD_SIZEOF(struct wlp_device_info, name) - 1)
+wlp_vget(char, WLP_ATTR_MANUF, manufacturer,
+         FIELD_SIZEOF(struct wlp_device_info, manufacturer) - 1)
+wlp_vget(char, WLP_ATTR_MODEL_NAME, model_name,
+         FIELD_SIZEOF(struct wlp_device_info, model_name) - 1)
+wlp_vget(char, WLP_ATTR_MODEL_NR, model_nr,
+         FIELD_SIZEOF(struct wlp_device_info, model_nr) - 1)
+wlp_vget(char, WLP_ATTR_SERIAL, serial,
+         FIELD_SIZEOF(struct wlp_device_info, serial) - 1)
+
+/**
+ * Retrieve WSS Name, Accept enroll, Secure status, Broadcast from WSS info
+ *
+ * @attr: pointer to WSS name attribute in WSS information attribute field
+ * @info: structure that will be populated with data from WSS information
+ *        field (WSS name, Accept enroll, secure status, broadcast address)
+ * @buflen: size of buffer
+ *
+ * Although the WSSID attribute forms part of the WSS info attribute it is
+ * retrieved separately and stored in a different location.
+ */
+static ssize_t wlp_get_wss_info_attrs(struct wlp *wlp,
+                                      struct wlp_attr_hdr *attr,
+                                      struct wlp_wss_tmp_info *info,
+                                      ssize_t buflen)
+{
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        void *ptr = attr;
+        size_t used = 0;
+        ssize_t result = -EINVAL;
+
+        d_printf(6, dev, "WLP: WSS info: Retrieving WSS name\n");
+        result = wlp_get_wss_name(wlp, ptr, info->name, buflen);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain WSS name from "
+                        "WSS info in D2 message.\n");
+                goto error_parse;
+        }
+        used += result;
+        d_printf(6, dev, "WLP: WSS info: Retrieving accept enroll\n");
+        result = wlp_get_accept_enrl(wlp, ptr + used, &info->accept_enroll,
+                                     buflen - used);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain accepting "
+                        "enrollment from WSS info in D2 message.\n");
+                goto error_parse;
+        }
+        if (info->accept_enroll != 0 && info->accept_enroll != 1) {
+                dev_err(dev, "WLP: invalid value for accepting "
+                        "enrollment in D2 message.\n");
+                result = -EINVAL;
+                goto error_parse;
+        }
+        used += result;
+        d_printf(6, dev, "WLP: WSS info: Retrieving secure status\n");
+        result = wlp_get_wss_sec_status(wlp, ptr + used, &info->sec_status,
+                                        buflen - used);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain secure "
+                        "status from WSS info in D2 message.\n");
+                goto error_parse;
+        }
+        if (info->sec_status != 0 && info->sec_status != 1) {
+                dev_err(dev, "WLP: invalid value for secure "
+                        "status in D2 message.\n");
+                result = -EINVAL;
+                goto error_parse;
+        }
+        used += result;
+        d_printf(6, dev, "WLP: WSS info: Retrieving broadcast\n");
+        result = wlp_get_wss_bcast(wlp, ptr + used, &info->bcast,
+                                   buflen - used);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain broadcast "
+                        "address from WSS info in D2 message.\n");
+                goto error_parse;
+        }
+        used += result;
+        result = used;
+error_parse:
+        return result;
+}
+
+/**
+ * Create a new WSSID entry for the neighbor, allocate temporary storage
+ *
+ * Each neighbor can have many WSS active. We maintain a list of WSSIDs
+ * advertised by neighbor. During discovery we also cache information about
+ * these WSS in temporary storage.
+ *
+ * The temporary storage will be removed after it has been used (eg.
+ * displayed to user), the wssid element will be removed from the list when
+ * the neighbor is rediscovered or when it disappears.
+ */
+static struct wlp_wssid_e *wlp_create_wssid_e(struct wlp *wlp,
+                                              struct wlp_neighbor_e *neighbor)
+{
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        struct wlp_wssid_e *wssid_e;
+
+        wssid_e = kzalloc(sizeof(*wssid_e), GFP_KERNEL);
+        if (wssid_e == NULL) {
+                dev_err(dev, "WLP: unable to allocate memory "
+                        "for WSS information.\n");
+                goto error_alloc;
+        }
+        wssid_e->info = kzalloc(sizeof(struct wlp_wss_tmp_info), GFP_KERNEL);
+        if (wssid_e->info == NULL) {
+                dev_err(dev, "WLP: unable to allocate memory "
+                        "for temporary WSS information.\n");
+                kfree(wssid_e);
+                wssid_e = NULL;
+                goto error_alloc;
+        }
+        list_add(&wssid_e->node, &neighbor->wssid);
+error_alloc:
+        return wssid_e;
+}
+
+/**
+ * Parse WSS information attribute
+ *
+ * @attr: pointer to WSS information attribute header
+ * @buflen: size of buffer in which WSS information attribute appears
+ * @wssid: will place wssid from WSS info attribute in this location
+ * @wss_info: will place other information from WSS information attribute
+ * in this location
+ *
+ * memory for @wssid and @wss_info must be allocated when calling this
+ */
+static ssize_t wlp_get_wss_info(struct wlp *wlp, struct wlp_attr_wss_info *attr,
+                                size_t buflen, struct wlp_uuid *wssid,
+                                struct wlp_wss_tmp_info *wss_info)
+{
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        ssize_t result;
+        size_t len;
+        size_t used = 0;
+        void *ptr;
+
+        result = wlp_check_wss_info_attr_hdr(wlp, (struct wlp_attr_hdr *)attr,
+                                             buflen);
+        if (result < 0)
+                goto out;
+        len = result;
+        used = sizeof(*attr);
+        ptr = attr;
+        d_printf(6, dev, "WLP: WSS info: Retrieving WSSID\n");
+        result = wlp_get_wssid(wlp, ptr + used, wssid, buflen - used);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain WSSID from WSS info.\n");
+                goto out;
+        }
+        used += result;
+        result = wlp_get_wss_info_attrs(wlp, ptr + used, wss_info,
+                                        buflen - used);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain WSS information "
+                        "from WSS information attributes. \n");
+                goto out;
+        }
+        used += result;
+        if (len + sizeof(*attr) != used) {
+                dev_err(dev, "WLP: Amount of data parsed does not "
+                        "match length field. Parsed %zu, length "
+                        "field %zu. \n", used, len);
+                result = -EINVAL;
+                goto out;
+        }
+        result = used;
+        d_printf(6, dev, "WLP: Successfully parsed WLP information "
+                 "attribute. used %zu bytes\n", used);
+out:
+        return result;
+}
+
+/**
+ * Retrieve WSS info from association frame
+ *
+ * @attr:     pointer to WSS information attribute
+ * @neighbor: ptr to neighbor being discovered, NULL if enrollment in
+ *            progress
+ * @wss:      ptr to WSS being enrolled in, NULL if discovery in progress
+ * @buflen:   size of buffer in which WSS information appears
+ *
+ * The WSS information attribute appears in the D2 association message.
+ * This message is used in two ways: to discover all neighbors or to enroll
+ * into a WSS activated by a neighbor. During discovery we only want to
+ * store the WSS info in a cache, to be deleted right after it has been
+ * used (eg. displayed to the user). During enrollment we store the WSS
+ * information for the lifetime of enrollment.
+ *
+ * During discovery we are interested in all WSS information, during
+ * enrollment we are only interested in the WSS being enrolled in. Even so,
+ * when in enrollment we keep parsing the message after finding the WSS of
+ * interest, this simplifies the calling routine in that it can be sure
+ * that all WSS information attributes have been parsed out of the message.
+ *
+ * Association frame is process with nbmutex held. The list access is safe.
+ */
+static ssize_t wlp_get_all_wss_info(struct wlp *wlp,
+                                    struct wlp_attr_wss_info *attr,
+                                    struct wlp_neighbor_e *neighbor,
+                                    struct wlp_wss *wss, ssize_t buflen)
+{
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        size_t used = 0;
+        ssize_t result = -EINVAL;
+        struct wlp_attr_wss_info *cur;
+        struct wlp_uuid wssid;
+        struct wlp_wss_tmp_info wss_info;
+        unsigned enroll; /* 0 - discovery to cache, 1 - enrollment */
+        struct wlp_wssid_e *wssid_e;
+        char buf[WLP_WSS_UUID_STRSIZE];
+
+        d_fnstart(6, dev, "wlp %p, attr %p, neighbor %p, wss %p, buflen %d \n",
+                  wlp, attr, neighbor, wss, (int)buflen);
+        if (buflen < 0)
+                goto out;
+
+        if (neighbor != NULL && wss == NULL)
+                enroll = 0; /* discovery */
+        else if (wss != NULL && neighbor == NULL)
+                enroll = 1; /* enrollment */
+        else
+                goto out;
+
+        cur = attr;
+        while (buflen - used > 0) {
+                memset(&wss_info, 0, sizeof(wss_info));
+                cur = (void *)cur + used;
+                result = wlp_get_wss_info(wlp, cur, buflen - used, &wssid,
+                                          &wss_info);
+                if (result == -ENODATA) {
+                        result = used;
+                        goto out;
+                } else if (result < 0) {
+                        dev_err(dev, "WLP: Unable to parse WSS information "
+                                "from WSS information attribute. \n");
+                        result = -EINVAL;
+                        goto error_parse;
+                }
+                if (enroll && !memcmp(&wssid, &wss->wssid, sizeof(wssid))) {
+                        if (wss_info.accept_enroll != 1) {
+                                dev_err(dev, "WLP: Requested WSS does "
+                                        "not accept enrollment.\n");
+                                result = -EINVAL;
+                                goto out;
+                        }
+                        memcpy(wss->name, wss_info.name, sizeof(wss->name));
+                        wss->bcast = wss_info.bcast;
+                        wss->secure_status = wss_info.sec_status;
+                        wss->accept_enroll = wss_info.accept_enroll;
+                        wss->state = WLP_WSS_STATE_PART_ENROLLED;
+                        wlp_wss_uuid_print(buf, sizeof(buf), &wssid);
+                        d_printf(2, dev, "WLP: Found WSS %s. Enrolling.\n",
+                                 buf);
+                } else {
+                        wssid_e = wlp_create_wssid_e(wlp, neighbor);
+                        if (wssid_e == NULL) {
+                                dev_err(dev, "WLP: Cannot create new WSSID "
+                                        "entry for neighbor %02x:%02x.\n",
+                                        neighbor->uwb_dev->dev_addr.data[1],
+                                        neighbor->uwb_dev->dev_addr.data[0]);
+                                result = -ENOMEM;
+                                goto out;
+                        }
+                        wssid_e->wssid = wssid;
+                        *wssid_e->info = wss_info;
+                }
+                used += result;
+        }
+        result = used;
+error_parse:
+        if (result < 0 && !enroll) /* this was a discovery */
+                wlp_remove_neighbor_tmp_info(neighbor);
+out:
+        d_fnend(6, dev, "wlp %p, attr %p, neighbor %p, wss %p, buflen %d, "
+                "result %d \n", wlp, attr, neighbor, wss, (int)buflen,
+                (int)result);
+        return result;
+
+}
+
+/**
+ * Parse WSS information attributes into cache for discovery
+ *
+ * @attr: the first WSS information attribute in message
+ * @neighbor: the neighbor whose cache will be populated
+ * @buflen: size of the input buffer
+ */
+static ssize_t wlp_get_wss_info_to_cache(struct wlp *wlp,
+                                         struct wlp_attr_wss_info *attr,
+                                         struct wlp_neighbor_e *neighbor,
+                                         ssize_t buflen)
+{
+        return wlp_get_all_wss_info(wlp, attr, neighbor, NULL, buflen);
+}
+
+/**
+ * Parse WSS information attributes into WSS struct for enrollment
+ *
+ * @attr: the first WSS information attribute in message
+ * @wss: the WSS that will be enrolled
+ * @buflen: size of the input buffer
+ */
+static ssize_t wlp_get_wss_info_to_enroll(struct wlp *wlp,
+                                          struct wlp_attr_wss_info *attr,
+                                          struct wlp_wss *wss, ssize_t buflen)
+{
+        return wlp_get_all_wss_info(wlp, attr, NULL, wss, buflen);
+}
+
+/**
+ * Construct a D1 association frame
+ *
+ * We use the radio control functions to determine the values of the device
+ * properties. These are of variable length and the total space needed is
+ * tallied first before we start constructing the message. The radio
+ * control functions return strings that are terminated with \0. This
+ * character should not be included in the message (there is a length field
+ * accompanying it in the attribute).
+ */
+static int wlp_build_assoc_d1(struct wlp *wlp, struct wlp_wss *wss,
+                              struct sk_buff **skb)
+{
+
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        int result = 0;
+        struct wlp_device_info *info;
+        size_t used = 0;
+        struct wlp_frame_assoc *_d1;
+        struct sk_buff *_skb;
+        void *d1_itr;
+
+        d_fnstart(6, dev, "wlp %p\n", wlp);
+        if (wlp->dev_info == NULL) {
+                result = __wlp_setup_device_info(wlp);
+                if (result < 0) {
+                        dev_err(dev, "WLP: Unable to setup device "
+                                "information for D1 message.\n");
+                        goto error;
+                }
+        }
+        info = wlp->dev_info;
+        d_printf(6, dev, "Local properties:\n"
+                 "Device name (%d bytes): %s\n"
+                 "Model name (%d bytes): %s\n"
+                 "Manufacturer (%d bytes): %s\n"
+                 "Model number (%d bytes): %s\n"
+                 "Serial number (%d bytes): %s\n"
+                 "Primary device type: \n"
+                 " Category: %d \n"
+                 " OUI: %02x:%02x:%02x \n"
+                 " OUI Subdivision: %u \n",
+                 (int)strlen(info->name), info->name,
+                 (int)strlen(info->model_name), info->model_name,
+                 (int)strlen(info->manufacturer), info->manufacturer,
+                 (int)strlen(info->model_nr),  info->model_nr,
+                 (int)strlen(info->serial), info->serial,
+                 info->prim_dev_type.category,
+                 info->prim_dev_type.OUI[0], info->prim_dev_type.OUI[1],
+                 info->prim_dev_type.OUI[2], info->prim_dev_type.OUIsubdiv);
+        _skb = dev_alloc_skb(sizeof(*_d1)
+                      + sizeof(struct wlp_attr_uuid_e)
+                      + sizeof(struct wlp_attr_wss_sel_mthd)
+                      + sizeof(struct wlp_attr_dev_name)
+                      + strlen(info->name)
+                      + sizeof(struct wlp_attr_manufacturer)
+                      + strlen(info->manufacturer)
+                      + sizeof(struct wlp_attr_model_name)
+                      + strlen(info->model_name)
+                      + sizeof(struct wlp_attr_model_nr)
+                      + strlen(info->model_nr)
+                      + sizeof(struct wlp_attr_serial)
+                      + strlen(info->serial)
+                      + sizeof(struct wlp_attr_prim_dev_type)
+                      + sizeof(struct wlp_attr_wlp_assc_err));
+        if (_skb == NULL) {
+                dev_err(dev, "WLP: Cannot allocate memory for association "
+                        "message.\n");
+                result = -ENOMEM;
+                goto error;
+        }
+        _d1 = (void *) _skb->data;
+        d_printf(6, dev, "D1 starts at %p \n", _d1);
+        _d1->hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID);
+        _d1->hdr.type = WLP_FRAME_ASSOCIATION;
+        _d1->type = WLP_ASSOC_D1;
+
+        wlp_set_version(&_d1->version, WLP_VERSION);
+        wlp_set_msg_type(&_d1->msg_type, WLP_ASSOC_D1);
+        d1_itr = _d1->attr;
+        used = wlp_set_uuid_e(d1_itr, &wlp->uuid);
+        used += wlp_set_wss_sel_mthd(d1_itr + used, WLP_WSS_REG_SELECT);
+        used += wlp_set_dev_name(d1_itr + used, info->name,
+                                 strlen(info->name));
+        used += wlp_set_manufacturer(d1_itr + used, info->manufacturer,
+                                     strlen(info->manufacturer));
+        used += wlp_set_model_name(d1_itr + used, info->model_name,
+                                   strlen(info->model_name));
+        used += wlp_set_model_nr(d1_itr + used, info->model_nr,
+                                 strlen(info->model_nr));
+        used += wlp_set_serial(d1_itr + used, info->serial,
+                               strlen(info->serial));
+        used += wlp_set_prim_dev_type(d1_itr + used, &info->prim_dev_type);
+        used += wlp_set_wlp_assc_err(d1_itr + used, WLP_ASSOC_ERROR_NONE);
+        skb_put(_skb, sizeof(*_d1) + used);
+        d_printf(6, dev, "D1 message:\n");
+        d_dump(6, dev, _d1, sizeof(*_d1)
+                     + sizeof(struct wlp_attr_uuid_e)
+                     + sizeof(struct wlp_attr_wss_sel_mthd)
+                     + sizeof(struct wlp_attr_dev_name)
+                     + strlen(info->name)
+                     + sizeof(struct wlp_attr_manufacturer)
+                     + strlen(info->manufacturer)
+                     + sizeof(struct wlp_attr_model_name)
+                     + strlen(info->model_name)
+                     + sizeof(struct wlp_attr_model_nr)
+                     + strlen(info->model_nr)
+                     + sizeof(struct wlp_attr_serial)
+                     + strlen(info->serial)
+                     + sizeof(struct wlp_attr_prim_dev_type)
+                     + sizeof(struct wlp_attr_wlp_assc_err));
+        *skb = _skb;
+error:
+        d_fnend(6, dev, "wlp %p, result = %d\n", wlp, result);
+        return result;
+}
+
+/**
+ * Construct a D2 association frame
+ *
+ * We use the radio control functions to determine the values of the device
+ * properties. These are of variable length and the total space needed is
+ * tallied first before we start constructing the message. The radio
+ * control functions return strings that are terminated with \0. This
+ * character should not be included in the message (there is a length field
+ * accompanying it in the attribute).
+ */
+static
+int wlp_build_assoc_d2(struct wlp *wlp, struct wlp_wss *wss,
+                       struct sk_buff **skb, struct wlp_uuid *uuid_e)
+{
+
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        int result = 0;
+        struct wlp_device_info *info;
+        size_t used = 0;
+        struct wlp_frame_assoc *_d2;
+        struct sk_buff *_skb;
+        void *d2_itr;
+        size_t mem_needed;
+
+        d_fnstart(6, dev, "wlp %p\n", wlp);
+        if (wlp->dev_info == NULL) {
+                result = __wlp_setup_device_info(wlp);
+                if (result < 0) {
+                        dev_err(dev, "WLP: Unable to setup device "
+                                "information for D2 message.\n");
+                        goto error;
+                }
+        }
+        info = wlp->dev_info;
+        d_printf(6, dev, "Local properties:\n"
+                 "Device name (%d bytes): %s\n"
+                 "Model name (%d bytes): %s\n"
+                 "Manufacturer (%d bytes): %s\n"
+                 "Model number (%d bytes): %s\n"
+                 "Serial number (%d bytes): %s\n"
+                 "Primary device type: \n"
+                 " Category: %d \n"
+                 " OUI: %02x:%02x:%02x \n"
+                 " OUI Subdivision: %u \n",
+                 (int)strlen(info->name), info->name,
+                 (int)strlen(info->model_name), info->model_name,
+                 (int)strlen(info->manufacturer), info->manufacturer,
+                 (int)strlen(info->model_nr),  info->model_nr,
+                 (int)strlen(info->serial), info->serial,
+                 info->prim_dev_type.category,
+                 info->prim_dev_type.OUI[0], info->prim_dev_type.OUI[1],
+                 info->prim_dev_type.OUI[2], info->prim_dev_type.OUIsubdiv);
+        mem_needed = sizeof(*_d2)
+                      + sizeof(struct wlp_attr_uuid_e)
+                      + sizeof(struct wlp_attr_uuid_r)
+                      + sizeof(struct wlp_attr_dev_name)
+                      + strlen(info->name)
+                      + sizeof(struct wlp_attr_manufacturer)
+                      + strlen(info->manufacturer)
+                      + sizeof(struct wlp_attr_model_name)
+                      + strlen(info->model_name)
+                      + sizeof(struct wlp_attr_model_nr)
+                      + strlen(info->model_nr)
+                      + sizeof(struct wlp_attr_serial)
+                      + strlen(info->serial)
+                      + sizeof(struct wlp_attr_prim_dev_type)
+                      + sizeof(struct wlp_attr_wlp_assc_err);
+        if (wlp->wss.state >= WLP_WSS_STATE_ACTIVE)
+                mem_needed += sizeof(struct wlp_attr_wss_info)
+                              + sizeof(struct wlp_wss_info)
+                              + strlen(wlp->wss.name);
+        _skb = dev_alloc_skb(mem_needed);
+        if (_skb == NULL) {
+                dev_err(dev, "WLP: Cannot allocate memory for association "
+                        "message.\n");
+                result = -ENOMEM;
+                goto error;
+        }
+        _d2 = (void *) _skb->data;
+        d_printf(6, dev, "D2 starts at %p \n", _d2);
+        _d2->hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID);
+        _d2->hdr.type = WLP_FRAME_ASSOCIATION;
+        _d2->type = WLP_ASSOC_D2;
+
+        wlp_set_version(&_d2->version, WLP_VERSION);
+        wlp_set_msg_type(&_d2->msg_type, WLP_ASSOC_D2);
+        d2_itr = _d2->attr;
+        used = wlp_set_uuid_e(d2_itr, uuid_e);
+        used += wlp_set_uuid_r(d2_itr + used, &wlp->uuid);
+        if (wlp->wss.state >= WLP_WSS_STATE_ACTIVE)
+                used += wlp_set_wss_info(d2_itr + used, &wlp->wss);
+        used += wlp_set_dev_name(d2_itr + used, info->name,
+                                 strlen(info->name));
+        used += wlp_set_manufacturer(d2_itr + used, info->manufacturer,
+                                     strlen(info->manufacturer));
+        used += wlp_set_model_name(d2_itr + used, info->model_name,
+                                   strlen(info->model_name));
+        used += wlp_set_model_nr(d2_itr + used, info->model_nr,
+                                 strlen(info->model_nr));
+        used += wlp_set_serial(d2_itr + used, info->serial,
+                               strlen(info->serial));
+        used += wlp_set_prim_dev_type(d2_itr + used, &info->prim_dev_type);
+        used += wlp_set_wlp_assc_err(d2_itr + used, WLP_ASSOC_ERROR_NONE);
+        skb_put(_skb, sizeof(*_d2) + used);
+        d_printf(6, dev, "D2 message:\n");
+        d_dump(6, dev, _d2, mem_needed);
+        *skb = _skb;
+error:
+        d_fnend(6, dev, "wlp %p, result = %d\n", wlp, result);
+        return result;
+}
+
+/**
+ * Allocate memory for and populate fields of F0 association frame
+ *
+ * Currently (while focusing on unsecure enrollment) we ignore the
+ * nonce's that could be placed in the message. Only the error field is
+ * populated by the value provided by the caller.
+ */
+static
+int wlp_build_assoc_f0(struct wlp *wlp, struct sk_buff **skb,
+                       enum wlp_assc_error error)
+{
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        int result = -ENOMEM;
+        struct {
+                struct wlp_frame_assoc f0_hdr;
+                struct wlp_attr_enonce enonce;
+                struct wlp_attr_rnonce rnonce;
+                struct wlp_attr_wlp_assc_err assc_err;
+        } *f0;
+        struct sk_buff *_skb;
+        struct wlp_nonce tmp;
+
+        d_fnstart(6, dev, "wlp %p\n", wlp);
+        _skb = dev_alloc_skb(sizeof(*f0));
+        if (_skb == NULL) {
+                dev_err(dev, "WLP: Unable to allocate memory for F0 "
+                        "association frame. \n");
+                goto error_alloc;
+        }
+        f0 = (void *) _skb->data;
+        d_printf(6, dev, "F0 starts at %p \n", f0);
+        f0->f0_hdr.hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID);
+        f0->f0_hdr.hdr.type = WLP_FRAME_ASSOCIATION;
+        f0->f0_hdr.type = WLP_ASSOC_F0;
+        wlp_set_version(&f0->f0_hdr.version, WLP_VERSION);
+        wlp_set_msg_type(&f0->f0_hdr.msg_type, WLP_ASSOC_F0);
+        memset(&tmp, 0, sizeof(tmp));
+        wlp_set_enonce(&f0->enonce, &tmp);
+        wlp_set_rnonce(&f0->rnonce, &tmp);
+        wlp_set_wlp_assc_err(&f0->assc_err, error);
+        skb_put(_skb, sizeof(*f0));
+        *skb = _skb;
+        result = 0;
+error_alloc:
+        d_fnend(6, dev, "wlp %p, result %d \n", wlp, result);
+        return result;
+}
+
+/**
+ * Parse F0 frame
+ *
+ * We just retrieve the values and print it as an error to the user.
+ * Calling function already knows an error occured (F0 indicates error), so
+ * we just parse the content as debug for higher layers.
+ */
+int wlp_parse_f0(struct wlp *wlp, struct sk_buff *skb)
+{
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        struct wlp_frame_assoc *f0 = (void *) skb->data;
+        void *ptr = skb->data;
+        size_t len = skb->len;
+        size_t used;
+        ssize_t result;
+        struct wlp_nonce enonce, rnonce;
+        enum wlp_assc_error assc_err;
+        char enonce_buf[WLP_WSS_NONCE_STRSIZE];
+        char rnonce_buf[WLP_WSS_NONCE_STRSIZE];
+
+        used = sizeof(*f0);
+        result = wlp_get_enonce(wlp, ptr + used, &enonce, len - used);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain Enrollee nonce "
+                        "attribute from F0 message.\n");
+                goto error_parse;
+        }
+        used += result;
+        result = wlp_get_rnonce(wlp, ptr + used, &rnonce, len - used);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain Registrar nonce "
+                        "attribute from F0 message.\n");
+                goto error_parse;
+        }
+        used += result;
+        result = wlp_get_wlp_assc_err(wlp, ptr + used, &assc_err, len - used);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain WLP Association error "
+                        "attribute from F0 message.\n");
+                goto error_parse;
+        }
+        wlp_wss_nonce_print(enonce_buf, sizeof(enonce_buf), &enonce);
+        wlp_wss_nonce_print(rnonce_buf, sizeof(rnonce_buf), &rnonce);
+        dev_err(dev, "WLP: Received F0 error frame from neighbor. Enrollee "
+                "nonce: %s, Registrar nonce: %s, WLP Association error: %s.\n",
+                enonce_buf, rnonce_buf, wlp_assc_error_str(assc_err));
+        result = 0;
+error_parse:
+        return result;
+}
+
+/**
+ * Retrieve variable device information from association message
+ *
+ * The device information parsed is not required in any message. This
+ * routine will thus not fail if an attribute is not present.
+ * The attributes are expected in a certain order, even if all are not
+ * present. The "attribute type" value is used to ensure the attributes
+ * are parsed in the correct order.
+ *
+ * If an error is encountered during parsing the function will return an
+ * error code, when this happens the given device_info structure may be
+ * partially filled.
+ */
+static
+int wlp_get_variable_info(struct wlp *wlp, void *data,
+                          struct wlp_device_info *dev_info, ssize_t len)
+{
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        size_t used = 0;
+        struct wlp_attr_hdr *hdr;
+        ssize_t result = 0;
+        unsigned last = 0;
+
+        while (len - used > 0) {
+                if (len - used < sizeof(*hdr)) {
+                        dev_err(dev, "WLP: Partial data in frame, cannot "
+                                "parse. \n");
+                        goto error_parse;
+                }
+                hdr = data + used;
+                switch (le16_to_cpu(hdr->type)) {
+                case WLP_ATTR_MANUF:
+                        if (last >= WLP_ATTR_MANUF) {
+                                dev_err(dev, "WLP: Incorrect order of "
+                                        "attribute values in D1 msg.\n");
+                                goto error_parse;
+                        }
+                        result = wlp_get_manufacturer(wlp, data + used,
+                                                      dev_info->manufacturer,
+                                                      len - used);
+                        if (result < 0) {
+                                dev_err(dev, "WLP: Unable to obtain "
+                                        "Manufacturer attribute from D1 "
+                                        "message.\n");
+                                goto error_parse;
+                        }
+                        last = WLP_ATTR_MANUF;
+                        used += result;
+                        break;
+                case WLP_ATTR_MODEL_NAME:
+                        if (last >= WLP_ATTR_MODEL_NAME) {
+                                dev_err(dev, "WLP: Incorrect order of "
+                                        "attribute values in D1 msg.\n");
+                                goto error_parse;
+                        }
+                        result = wlp_get_model_name(wlp, data + used,
+                                                    dev_info->model_name,
+                                                    len - used);
+                        if (result < 0) {
+                                dev_err(dev, "WLP: Unable to obtain Model "
+                                        "name attribute from D1 message.\n");
+                                goto error_parse;
+                        }
+                        last = WLP_ATTR_MODEL_NAME;
+                        used += result;
+                        break;
+                case WLP_ATTR_MODEL_NR:
+                        if (last >= WLP_ATTR_MODEL_NR) {
+                                dev_err(dev, "WLP: Incorrect order of "
+                                        "attribute values in D1 msg.\n");
+                                goto error_parse;
+                        }
+                        result = wlp_get_model_nr(wlp, data + used,
+                                                  dev_info->model_nr,
+                                                  len - used);
+                        if (result < 0) {
+                                dev_err(dev, "WLP: Unable to obtain Model "
+                                        "number attribute from D1 message.\n");
+                                goto error_parse;
+                        }
+                        last = WLP_ATTR_MODEL_NR;
+                        used += result;
+                        break;
+                case WLP_ATTR_SERIAL:
+                        if (last >= WLP_ATTR_SERIAL) {
+                                dev_err(dev, "WLP: Incorrect order of "
+                                        "attribute values in D1 msg.\n");
+                                goto error_parse;
+                        }
+                        result = wlp_get_serial(wlp, data + used,
+                                                dev_info->serial, len - used);
+                        if (result < 0) {
+                                dev_err(dev, "WLP: Unable to obtain Serial "
+                                        "number attribute from D1 message.\n");
+                                goto error_parse;
+                        }
+                        last = WLP_ATTR_SERIAL;
+                        used += result;
+                        break;
+                case WLP_ATTR_PRI_DEV_TYPE:
+                        if (last >= WLP_ATTR_PRI_DEV_TYPE) {
+                                dev_err(dev, "WLP: Incorrect order of "
+                                        "attribute values in D1 msg.\n");
+                                goto error_parse;
+                        }
+                        result = wlp_get_prim_dev_type(wlp, data + used,
+                                                       &dev_info->prim_dev_type,
+                                                       len - used);
+                        if (result < 0) {
+                                dev_err(dev, "WLP: Unable to obtain Primary "
+                                        "device type attribute from D1 "
+                                        "message.\n");
+                                goto error_parse;
+                        }
+                        dev_info->prim_dev_type.category =
+                                le16_to_cpu(dev_info->prim_dev_type.category);
+                        dev_info->prim_dev_type.subID =
+                                le16_to_cpu(dev_info->prim_dev_type.subID);
+                        last = WLP_ATTR_PRI_DEV_TYPE;
+                        used += result;
+                        break;
+                default:
+                        /* This is not variable device information. */
+                        goto out;
+                        break;
+                }
+        }
+out:
+        return used;
+error_parse:
+        return -EINVAL;
+}
+
+/**
+ * Parse incoming D1 frame, populate attribute values
+ *
+ * Caller provides pointers to memory already allocated for attributes
+ * expected in the D1 frame. These variables will be populated.
+ */
+static
+int wlp_parse_d1_frame(struct wlp *wlp, struct sk_buff *skb,
+                       struct wlp_uuid *uuid_e,
+                       enum wlp_wss_sel_mthd *sel_mthd,
+                       struct wlp_device_info *dev_info,
+                       enum wlp_assc_error *assc_err)
+{
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        struct wlp_frame_assoc *d1 = (void *) skb->data;
+        void *ptr = skb->data;
+        size_t len = skb->len;
+        size_t used;
+        ssize_t result;
+
+        used = sizeof(*d1);
+        result = wlp_get_uuid_e(wlp, ptr + used, uuid_e, len - used);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain UUID-E attribute from D1 "
+                        "message.\n");
+                goto error_parse;
+        }
+        used += result;
+        result = wlp_get_wss_sel_mthd(wlp, ptr + used, sel_mthd, len - used);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain WSS selection method "
+                        "from D1 message.\n");
+                goto error_parse;
+        }
+        used += result;
+        result = wlp_get_dev_name(wlp, ptr + used, dev_info->name,
+                                     len - used);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain Device Name from D1 "
+                        "message.\n");
+                goto error_parse;
+        }
+        used += result;
+        result = wlp_get_variable_info(wlp, ptr + used, dev_info, len - used);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain Device Information from "
+                        "D1 message.\n");
+                goto error_parse;
+        }
+        used += result;
+        result = wlp_get_wlp_assc_err(wlp, ptr + used, assc_err, len - used);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain WLP Association Error "
+                        "Information from D1 message.\n");
+                goto error_parse;
+        }
+        result = 0;
+error_parse:
+        return result;
+}
+/**
+ * Handle incoming D1 frame
+ *
+ * The frame has already been verified to contain an Association header with
+ * the correct version number. Parse the incoming frame, construct and send
+ * a D2 frame in response.
+ *
+ * It is not clear what to do with most fields in the incoming D1 frame. We
+ * retrieve and discard the information here for now.
+ */
+void wlp_handle_d1_frame(struct work_struct *ws)
+{
+        struct wlp_assoc_frame_ctx *frame_ctx = container_of(ws,
+                                                  struct wlp_assoc_frame_ctx,
+                                                  ws);
+        struct wlp *wlp = frame_ctx->wlp;
+        struct wlp_wss *wss = &wlp->wss;
+        struct sk_buff *skb = frame_ctx->skb;
+        struct uwb_dev_addr *src = &frame_ctx->src;
+        int result;
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        struct wlp_uuid uuid_e;
+        enum wlp_wss_sel_mthd sel_mthd = 0;
+        struct wlp_device_info dev_info;
+        enum wlp_assc_error assc_err;
+        char uuid[WLP_WSS_UUID_STRSIZE];
+        struct sk_buff *resp = NULL;
+
+        /* Parse D1 frame */
+        d_fnstart(6, dev, "WLP: handle D1 frame. wlp = %p, skb = %p\n",
+                  wlp, skb);
+        mutex_lock(&wss->mutex);
+        mutex_lock(&wlp->mutex); /* to access wlp->uuid */
+        memset(&dev_info, 0, sizeof(dev_info));
+        result = wlp_parse_d1_frame(wlp, skb, &uuid_e, &sel_mthd, &dev_info,
+                                    &assc_err);
+        if (result < 0) {
+                dev_err(dev, "WLP: Unable to parse incoming D1 frame.\n");
+                kfree_skb(skb);
+                goto out;
+        }
+        wlp_wss_uuid_print(uuid, sizeof(uuid), &uuid_e);
+        d_printf(6, dev, "From D1 frame:\n"
+                 "UUID-E: %s\n"
+                 "Selection method: %d\n"
+                 "Device name (%d bytes): %s\n"
+                 "Model name (%d bytes): %s\n"
+                 "Manufacturer (%d bytes): %s\n"
+                 "Model number (%d bytes): %s\n"
+                 "Serial number (%d bytes): %s\n"
+                 "Primary device type: \n"
+                 " Category: %d \n"
+                 " OUI: %02x:%02x:%02x \n"
+                 " OUI Subdivision: %u \n",
+                 uuid, sel_mthd,
+                 (int)strlen(dev_info.name), dev_info.name,
+                 (int)strlen(dev_info.model_name), dev_info.model_name,
+                 (int)strlen(dev_info.manufacturer), dev_info.manufacturer,
+                 (int)strlen(dev_info.model_nr),  dev_info.model_nr,
+                 (int)strlen(dev_info.serial), dev_info.serial,
+                 dev_info.prim_dev_type.category,
+                 dev_info.prim_dev_type.OUI[0],
+                 dev_info.prim_dev_type.OUI[1],
+                 dev_info.prim_dev_type.OUI[2],
+                 dev_info.prim_dev_type.OUIsubdiv);
+
+        kfree_skb(skb);
+        if (!wlp_uuid_is_set(&wlp->uuid)) {
+                dev_err(dev, "WLP: UUID is not set. Set via sysfs to "
+                        "proceed. Respong to D1 message with error F0.\n");
+                result = wlp_build_assoc_f0(wlp, &resp,
+                                            WLP_ASSOC_ERROR_NOT_READY);
+                if (result < 0) {
+                        dev_err(dev, "WLP: Unable to construct F0 message.\n");
+                        goto out;
+                }
+        } else {
+                /* Construct D2 frame */
+                result = wlp_build_assoc_d2(wlp, wss, &resp, &uuid_e);
+                if (result < 0) {
+                        dev_err(dev, "WLP: Unable to construct D2 message.\n");
+                        goto out;
+                }
+        }
+        /* Send D2 frame */
+        BUG_ON(wlp->xmit_frame == NULL);
+        result = wlp->xmit_frame(wlp, resp, src);
+        if (result < 0) {
+                dev_err(dev, "WLP: Unable to transmit D2 association "
+                        "message: %d\n", result);
+                if (result == -ENXIO)
+                        dev_err(dev, "WLP: Is network interface up? \n");
+                /* We could try again ... */
+                dev_kfree_skb_any(resp); /* we need to free if tx fails */
+        }
+out:
+        kfree(frame_ctx);
+        mutex_unlock(&wlp->mutex);
+        mutex_unlock(&wss->mutex);
+        d_fnend(6, dev, "WLP: handle D1 frame. wlp = %p\n", wlp);
+}
+
+/**
+ * Parse incoming D2 frame, create and populate temporary cache
+ *
+ * @skb: socket buffer in which D2 frame can be found
+ * @neighbor: the neighbor that sent the D2 frame
+ *
+ * Will allocate memory for temporary storage of information learned during
+ * discovery.
+ */
+int wlp_parse_d2_frame_to_cache(struct wlp *wlp, struct sk_buff *skb,
+                                struct wlp_neighbor_e *neighbor)
+{
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        struct wlp_frame_assoc *d2 = (void *) skb->data;
+        void *ptr = skb->data;
+        size_t len = skb->len;
+        size_t used;
+        ssize_t result;
+        struct wlp_uuid uuid_e;
+        struct wlp_device_info *nb_info;
+        enum wlp_assc_error assc_err;
+
+        used = sizeof(*d2);
+        result = wlp_get_uuid_e(wlp, ptr + used, &uuid_e, len - used);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain UUID-E attribute from D2 "
+                        "message.\n");
+                goto error_parse;
+        }
+        if (memcmp(&uuid_e, &wlp->uuid, sizeof(uuid_e))) {
+                dev_err(dev, "WLP: UUID-E in incoming D2 does not match "
+                        "local UUID sent in D1. \n");
+                goto error_parse;
+        }
+        used += result;
+        result = wlp_get_uuid_r(wlp, ptr + used, &neighbor->uuid, len - used);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain UUID-R attribute from D2 "
+                        "message.\n");
+                goto error_parse;
+        }
+        used += result;
+        result = wlp_get_wss_info_to_cache(wlp, ptr + used, neighbor,
+                                           len - used);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain WSS information "
+                        "from D2 message.\n");
+                goto error_parse;
+        }
+        used += result;
+        neighbor->info = kzalloc(sizeof(struct wlp_device_info), GFP_KERNEL);
+        if (neighbor->info == NULL) {
+                dev_err(dev, "WLP: cannot allocate memory to store device "
+                        "info.\n");
+                result = -ENOMEM;
+                goto error_parse;
+        }
+        nb_info = neighbor->info;
+        result = wlp_get_dev_name(wlp, ptr + used, nb_info->name,
+                                  len - used);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain Device Name from D2 "
+                        "message.\n");
+                goto error_parse;
+        }
+        used += result;
+        result = wlp_get_variable_info(wlp, ptr + used, nb_info, len - used);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain Device Information from "
+                        "D2 message.\n");
+                goto error_parse;
+        }
+        used += result;
+        result = wlp_get_wlp_assc_err(wlp, ptr + used, &assc_err, len - used);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain WLP Association Error "
+                        "Information from D2 message.\n");
+                goto error_parse;
+        }
+        if (assc_err != WLP_ASSOC_ERROR_NONE) {
+                dev_err(dev, "WLP: neighbor device returned association "
+                        "error %d\n", assc_err);
+                result = -EINVAL;
+                goto error_parse;
+        }
+        result = 0;
+error_parse:
+        if (result < 0)
+                wlp_remove_neighbor_tmp_info(neighbor);
+        return result;
+}
+
+/**
+ * Parse incoming D2 frame, populate attribute values of WSS bein enrolled in
+ *
+ * @wss: our WSS that will be enrolled
+ * @skb: socket buffer in which D2 frame can be found
+ * @neighbor: the neighbor that sent the D2 frame
+ * @wssid: the wssid of the WSS in which we want to enroll
+ *
+ * Forms part of enrollment sequence. We are trying to enroll in WSS with
+ * @wssid by using @neighbor as registrar. A D1 message was sent to
+ * @neighbor and now we need to parse the D2 response. The neighbor's
+ * response is searched for the requested WSS and if found (and it accepts
+ * enrollment), we store the information.
+ */
+int wlp_parse_d2_frame_to_enroll(struct wlp_wss *wss, struct sk_buff *skb,
+                                 struct wlp_neighbor_e *neighbor,
+                                 struct wlp_uuid *wssid)
+{
+        struct wlp *wlp = container_of(wss, struct wlp, wss);
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        void *ptr = skb->data;
+        size_t len = skb->len;
+        size_t used;
+        ssize_t result;
+        struct wlp_uuid uuid_e;
+        struct wlp_uuid uuid_r;
+        struct wlp_device_info nb_info;
+        enum wlp_assc_error assc_err;
+        char uuid_bufA[WLP_WSS_UUID_STRSIZE];
+        char uuid_bufB[WLP_WSS_UUID_STRSIZE];
+
+        used = sizeof(struct wlp_frame_assoc);
+        result = wlp_get_uuid_e(wlp, ptr + used, &uuid_e, len - used);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain UUID-E attribute from D2 "
+                        "message.\n");
+                goto error_parse;
+        }
+        if (memcmp(&uuid_e, &wlp->uuid, sizeof(uuid_e))) {
+                dev_err(dev, "WLP: UUID-E in incoming D2 does not match "
+                        "local UUID sent in D1. \n");
+                goto error_parse;
+        }
+        used += result;
+        result = wlp_get_uuid_r(wlp, ptr + used, &uuid_r, len - used);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain UUID-R attribute from D2 "
+                        "message.\n");
+                goto error_parse;
+        }
+        if (memcmp(&uuid_r, &neighbor->uuid, sizeof(uuid_r))) {
+                wlp_wss_uuid_print(uuid_bufA, sizeof(uuid_bufA),
+                                   &neighbor->uuid);
+                wlp_wss_uuid_print(uuid_bufB, sizeof(uuid_bufB), &uuid_r);
+                dev_err(dev, "WLP: UUID of neighbor does not match UUID "
+                        "learned during discovery. Originally discovered: %s, "
+                        "now from D2 message: %s\n", uuid_bufA, uuid_bufB);
+                result = -EINVAL;
+                goto error_parse;
+        }
+        used += result;
+        wss->wssid = *wssid;
+        result = wlp_get_wss_info_to_enroll(wlp, ptr + used, wss, len - used);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain WSS information "
+                        "from D2 message.\n");
+                goto error_parse;
+        }
+        if (wss->state != WLP_WSS_STATE_PART_ENROLLED) {
+                dev_err(dev, "WLP: D2 message did not contain information "
+                        "for successful enrollment. \n");
+                result = -EINVAL;
+                goto error_parse;
+        }
+        used += result;
+        /* Place device information on stack to continue parsing of message */
+        result = wlp_get_dev_name(wlp, ptr + used, nb_info.name,
+                                  len - used);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain Device Name from D2 "
+                        "message.\n");
+                goto error_parse;
+        }
+        used += result;
+        result = wlp_get_variable_info(wlp, ptr + used, &nb_info, len - used);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain Device Information from "
+                        "D2 message.\n");
+                goto error_parse;
+        }
+        used += result;
+        result = wlp_get_wlp_assc_err(wlp, ptr + used, &assc_err, len - used);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain WLP Association Error "
+                        "Information from D2 message.\n");
+                goto error_parse;
+        }
+        if (assc_err != WLP_ASSOC_ERROR_NONE) {
+                dev_err(dev, "WLP: neighbor device returned association "
+                        "error %d\n", assc_err);
+                if (wss->state == WLP_WSS_STATE_PART_ENROLLED) {
+                        dev_err(dev, "WLP: Enrolled in WSS (should not "
+                                "happen according to spec). Undoing. \n");
+                        wlp_wss_reset(wss);
+                }
+                result = -EINVAL;
+                goto error_parse;
+        }
+        result = 0;
+error_parse:
+        return result;
+}
+
+/**
+ * Parse C3/C4 frame into provided variables
+ *
+ * @wssid: will point to copy of wssid retrieved from C3/C4 frame
+ * @tag:   will point to copy of tag retrieved from C3/C4 frame
+ * @virt_addr: will point to copy of virtual address retrieved from C3/C4
+ * frame.
+ *
+ * Calling function has to allocate memory for these values.
+ *
+ * skb contains a valid C3/C4 frame, return the individual fields of this
+ * frame in the provided variables.
+ */
+int wlp_parse_c3c4_frame(struct wlp *wlp, struct sk_buff *skb,
+                       struct wlp_uuid *wssid, u8 *tag,
+                       struct uwb_mac_addr *virt_addr)
+{
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        int result;
+        void *ptr = skb->data;
+        size_t len = skb->len;
+        size_t used;
+        char buf[WLP_WSS_UUID_STRSIZE];
+        struct wlp_frame_assoc *assoc = ptr;
+
+        d_fnstart(6, dev, "wlp %p, skb %p \n", wlp, skb);
+        used = sizeof(*assoc);
+        result = wlp_get_wssid(wlp, ptr + used, wssid, len - used);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain WSSID attribute from "
+                        "%s message.\n", wlp_assoc_frame_str(assoc->type));
+                goto error_parse;
+        }
+        used += result;
+        result = wlp_get_wss_tag(wlp, ptr + used, tag, len - used);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain WSS tag attribute from "
+                        "%s message.\n", wlp_assoc_frame_str(assoc->type));
+                goto error_parse;
+        }
+        used += result;
+        result = wlp_get_wss_virt(wlp, ptr + used, virt_addr, len - used);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain WSS virtual address "
+                        "attribute from %s message.\n",
+                        wlp_assoc_frame_str(assoc->type));
+                goto error_parse;
+        }
+        wlp_wss_uuid_print(buf, sizeof(buf), wssid);
+        d_printf(6, dev, "WLP: parsed: WSSID %s, tag 0x%02x, virt "
+                 "%02x:%02x:%02x:%02x:%02x:%02x \n", buf, *tag,
+                 virt_addr->data[0], virt_addr->data[1], virt_addr->data[2],
+                 virt_addr->data[3], virt_addr->data[4], virt_addr->data[5]);
+
+error_parse:
+        d_fnend(6, dev, "wlp %p, skb %p, result = %d \n", wlp, skb, result);
+        return result;
+}
+
+/**
+ * Allocate memory for and populate fields of C1 or C2 association frame
+ *
+ * The C1 and C2 association frames appear identical - except for the type.
+ */
+static
+int wlp_build_assoc_c1c2(struct wlp *wlp, struct wlp_wss *wss,
+                         struct sk_buff **skb, enum wlp_assoc_type type)
+{
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        int result  = -ENOMEM;
+        struct {
+                struct wlp_frame_assoc c_hdr;
+                struct wlp_attr_wssid wssid;
+        } *c;
+        struct sk_buff *_skb;
+
+        d_fnstart(6, dev, "wlp %p, wss %p \n", wlp, wss);
+        _skb = dev_alloc_skb(sizeof(*c));
+        if (_skb == NULL) {
+                dev_err(dev, "WLP: Unable to allocate memory for C1/C2 "
+                        "association frame. \n");
+                goto error_alloc;
+        }
+        c = (void *) _skb->data;
+        d_printf(6, dev, "C1/C2 starts at %p \n", c);
+        c->c_hdr.hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID);
+        c->c_hdr.hdr.type = WLP_FRAME_ASSOCIATION;
+        c->c_hdr.type = type;
+        wlp_set_version(&c->c_hdr.version, WLP_VERSION);
+        wlp_set_msg_type(&c->c_hdr.msg_type, type);
+        wlp_set_wssid(&c->wssid, &wss->wssid);
+        skb_put(_skb, sizeof(*c));
+        d_printf(6, dev, "C1/C2 message:\n");
+        d_dump(6, dev, c, sizeof(*c));
+        *skb = _skb;
+        result = 0;
+error_alloc:
+        d_fnend(6, dev, "wlp %p, wss %p, result %d \n", wlp, wss, result);
+        return result;
+}
+
+
+static
+int wlp_build_assoc_c1(struct wlp *wlp, struct wlp_wss *wss,
+                       struct sk_buff **skb)
+{
+        return wlp_build_assoc_c1c2(wlp, wss, skb, WLP_ASSOC_C1);
+}
+
+static
+int wlp_build_assoc_c2(struct wlp *wlp, struct wlp_wss *wss,
+                       struct sk_buff **skb)
+{
+        return wlp_build_assoc_c1c2(wlp, wss, skb, WLP_ASSOC_C2);
+}
+
+
+/**
+ * Allocate memory for and populate fields of C3 or C4 association frame
+ *
+ * The C3 and C4 association frames appear identical - except for the type.
+ */
+static
+int wlp_build_assoc_c3c4(struct wlp *wlp, struct wlp_wss *wss,
+                         struct sk_buff **skb, enum wlp_assoc_type type)
+{
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        int result  = -ENOMEM;
+        struct {
+                struct wlp_frame_assoc c_hdr;
+                struct wlp_attr_wssid wssid;
+                struct wlp_attr_wss_tag wss_tag;
+                struct wlp_attr_wss_virt wss_virt;
+        } *c;
+        struct sk_buff *_skb;
+
+        d_fnstart(6, dev, "wlp %p, wss %p \n", wlp, wss);
+        _skb = dev_alloc_skb(sizeof(*c));
+        if (_skb == NULL) {
+                dev_err(dev, "WLP: Unable to allocate memory for C3/C4 "
+                        "association frame. \n");
+                goto error_alloc;
+        }
+        c = (void *) _skb->data;
+        d_printf(6, dev, "C3/C4 starts at %p \n", c);
+        c->c_hdr.hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID);
+        c->c_hdr.hdr.type = WLP_FRAME_ASSOCIATION;
+        c->c_hdr.type = type;
+        wlp_set_version(&c->c_hdr.version, WLP_VERSION);
+        wlp_set_msg_type(&c->c_hdr.msg_type, type);
+        wlp_set_wssid(&c->wssid, &wss->wssid);
+        wlp_set_wss_tag(&c->wss_tag, wss->tag);
+        wlp_set_wss_virt(&c->wss_virt, &wss->virtual_addr);
+        skb_put(_skb, sizeof(*c));
+        d_printf(6, dev, "C3/C4 message:\n");
+        d_dump(6, dev, c, sizeof(*c));
+        *skb = _skb;
+        result = 0;
+error_alloc:
+        d_fnend(6, dev, "wlp %p, wss %p, result %d \n", wlp, wss, result);
+        return result;
+}
+
+static
+int wlp_build_assoc_c3(struct wlp *wlp, struct wlp_wss *wss,
+                       struct sk_buff **skb)
+{
+        return wlp_build_assoc_c3c4(wlp, wss, skb, WLP_ASSOC_C3);
+}
+
+static
+int wlp_build_assoc_c4(struct wlp *wlp, struct wlp_wss *wss,
+                       struct sk_buff **skb)
+{
+        return wlp_build_assoc_c3c4(wlp, wss, skb, WLP_ASSOC_C4);
+}
+
+
+#define wlp_send_assoc(type, id)                                        \
+static int wlp_send_assoc_##type(struct wlp *wlp, struct wlp_wss *wss,  \
+                                 struct uwb_dev_addr *dev_addr)         \
+{                                                                       \
+        struct device *dev = &wlp->rc->uwb_dev.dev;                     \
+        int result;                                                     \
+        struct sk_buff *skb = NULL;                                     \
+        d_fnstart(6, dev, "wlp %p, wss %p, neighbor: %02x:%02x\n",      \
+                  wlp, wss, dev_addr->data[1], dev_addr->data[0]);      \
+        d_printf(6, dev, "WLP: Constructing %s frame. \n",              \
+                 wlp_assoc_frame_str(id));                              \
+        /* Build the frame */                                           \
+        result = wlp_build_assoc_##type(wlp, wss, &skb);                \
+        if (result < 0) {                                               \
+                dev_err(dev, "WLP: Unable to construct %s association " \
+                        "frame: %d\n", wlp_assoc_frame_str(id), result);\
+                goto error_build_assoc;                                 \
+        }                                                               \
+        /* Send the frame */                                            \
+        d_printf(6, dev, "Transmitting %s frame to %02x:%02x \n",       \
+                 wlp_assoc_frame_str(id),                               \
+                 dev_addr->data[1], dev_addr->data[0]);                 \
+        BUG_ON(wlp->xmit_frame == NULL);                                \
+        result = wlp->xmit_frame(wlp, skb, dev_addr);                   \
+        if (result < 0) {                                               \
+                dev_err(dev, "WLP: Unable to transmit %s association "  \
+                        "message: %d\n", wlp_assoc_frame_str(id),       \
+                        result);                                        \
+                if (result == -ENXIO)                                   \
+                        dev_err(dev, "WLP: Is network interface "       \
+                                "up? \n");                              \
+                goto error_xmit;                                        \
+        }                                                               \
+        return 0;                                                       \
+error_xmit:                                                             \
+        /* We could try again ... */                                    \
+        dev_kfree_skb_any(skb);/*we need to free if tx fails*/          \
+error_build_assoc:                                                      \
+        d_fnend(6, dev, "wlp %p, wss %p, neighbor: %02x:%02x\n",        \
+                wlp, wss, dev_addr->data[1], dev_addr->data[0]);        \
+        return result;                                                  \
+}
+
+wlp_send_assoc(d1, WLP_ASSOC_D1)
+wlp_send_assoc(c1, WLP_ASSOC_C1)
+wlp_send_assoc(c3, WLP_ASSOC_C3)
+
+int wlp_send_assoc_frame(struct wlp *wlp, struct wlp_wss *wss,
+                         struct uwb_dev_addr *dev_addr,
+                         enum wlp_assoc_type type)
+{
+        int result = 0;
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        switch (type) {
+        case WLP_ASSOC_D1:
+                result = wlp_send_assoc_d1(wlp, wss, dev_addr);
+                break;
+        case WLP_ASSOC_C1:
+                result = wlp_send_assoc_c1(wlp, wss, dev_addr);
+                break;
+        case WLP_ASSOC_C3:
+                result = wlp_send_assoc_c3(wlp, wss, dev_addr);
+                break;
+        default:
+                dev_err(dev, "WLP: Received request to send unknown "
+                        "association message.\n");
+                result = -EINVAL;
+                break;
+        }
+        return result;
+}
+
+/**
+ * Handle incoming C1 frame
+ *
+ * The frame has already been verified to contain an Association header with
+ * the correct version number. Parse the incoming frame, construct and send
+ * a C2 frame in response.
+ */
+void wlp_handle_c1_frame(struct work_struct *ws)
+{
+        struct wlp_assoc_frame_ctx *frame_ctx = container_of(ws,
+                                                  struct wlp_assoc_frame_ctx,
+                                                  ws);
+        struct wlp *wlp = frame_ctx->wlp;
+        struct wlp_wss *wss = &wlp->wss;
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        struct wlp_frame_assoc *c1 = (void *) frame_ctx->skb->data;
+        unsigned int len = frame_ctx->skb->len;
+        struct uwb_dev_addr *src = &frame_ctx->src;
+        int result;
+        struct wlp_uuid wssid;
+        char buf[WLP_WSS_UUID_STRSIZE];
+        struct sk_buff *resp = NULL;
+
+        /* Parse C1 frame */
+        d_fnstart(6, dev, "WLP: handle C1 frame. wlp = %p, c1 = %p\n",
+                  wlp, c1);
+        mutex_lock(&wss->mutex);
+        result = wlp_get_wssid(wlp, (void *)c1 + sizeof(*c1), &wssid,
+                               len - sizeof(*c1));
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain WSSID from C1 frame.\n");
+                goto out;
+        }
+        wlp_wss_uuid_print(buf, sizeof(buf), &wssid);
+        d_printf(6, dev, "Received C1 frame with WSSID %s \n", buf);
+        if (!memcmp(&wssid, &wss->wssid, sizeof(wssid))
+            && wss->state == WLP_WSS_STATE_ACTIVE) {
+                d_printf(6, dev, "WSSID from C1 frame is known locally "
+                         "and is active\n");
+                /* Construct C2 frame */
+                result = wlp_build_assoc_c2(wlp, wss, &resp);
+                if (result < 0) {
+                        dev_err(dev, "WLP: Unable to construct C2 message.\n");
+                        goto out;
+                }
+        } else {
+                d_printf(6, dev, "WSSID from C1 frame is not known locally "
+                         "or is not active\n");
+                /* Construct F0 frame */
+                result = wlp_build_assoc_f0(wlp, &resp, WLP_ASSOC_ERROR_INV);
+                if (result < 0) {
+                        dev_err(dev, "WLP: Unable to construct F0 message.\n");
+                        goto out;
+                }
+        }
+        /* Send C2 frame */
+        d_printf(6, dev, "Transmitting response (C2/F0) frame to %02x:%02x \n",
+                 src->data[1], src->data[0]);
+        BUG_ON(wlp->xmit_frame == NULL);
+        result = wlp->xmit_frame(wlp, resp, src);
+        if (result < 0) {
+                dev_err(dev, "WLP: Unable to transmit response association "
+                        "message: %d\n", result);
+                if (result == -ENXIO)
+                        dev_err(dev, "WLP: Is network interface up? \n");
+                /* We could try again ... */
+                dev_kfree_skb_any(resp); /* we need to free if tx fails */
+        }
+out:
+        kfree_skb(frame_ctx->skb);
+        kfree(frame_ctx);
+        mutex_unlock(&wss->mutex);
+        d_fnend(6, dev, "WLP: handle C1 frame. wlp = %p\n", wlp);
+}
+
+/**
+ * Handle incoming C3 frame
+ *
+ * The frame has already been verified to contain an Association header with
+ * the correct version number. Parse the incoming frame, construct and send
+ * a C4 frame in response. If the C3 frame identifies a WSS that is locally
+ * active then we connect to this neighbor (add it to our EDA cache).
+ */
+void wlp_handle_c3_frame(struct work_struct *ws)
+{
+        struct wlp_assoc_frame_ctx *frame_ctx = container_of(ws,
+                                                  struct wlp_assoc_frame_ctx,
+                                                  ws);
+        struct wlp *wlp = frame_ctx->wlp;
+        struct wlp_wss *wss = &wlp->wss;
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        struct sk_buff *skb = frame_ctx->skb;
+        struct uwb_dev_addr *src = &frame_ctx->src;
+        int result;
+        char buf[WLP_WSS_UUID_STRSIZE];
+        struct sk_buff *resp = NULL;
+        struct wlp_uuid wssid;
+        u8 tag;
+        struct uwb_mac_addr virt_addr;
+
+        /* Parse C3 frame */
+        d_fnstart(6, dev, "WLP: handle C3 frame. wlp = %p, skb = %p\n",
+                  wlp, skb);
+        mutex_lock(&wss->mutex);
+        result = wlp_parse_c3c4_frame(wlp, skb, &wssid, &tag, &virt_addr);
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain values from C3 frame.\n");
+                goto out;
+        }
+        wlp_wss_uuid_print(buf, sizeof(buf), &wssid);
+        d_printf(6, dev, "Received C3 frame with WSSID %s \n", buf);
+        if (!memcmp(&wssid, &wss->wssid, sizeof(wssid))
+            && wss->state >= WLP_WSS_STATE_ACTIVE) {
+                d_printf(6, dev, "WSSID from C3 frame is known locally "
+                         "and is active\n");
+                result = wlp_eda_update_node(&wlp->eda, src, wss,
+                                             (void *) virt_addr.data, tag,
+                                             WLP_WSS_CONNECTED);
+                if (result < 0) {
+                        dev_err(dev, "WLP: Unable to update EDA cache "
+                                "with new connected neighbor information.\n");
+                        result = wlp_build_assoc_f0(wlp, &resp,
+                                                    WLP_ASSOC_ERROR_INT);
+                        if (result < 0) {
+                                dev_err(dev, "WLP: Unable to construct F0 "
+                                        "message.\n");
+                                goto out;
+                        }
+                } else {
+                        wss->state = WLP_WSS_STATE_CONNECTED;
+                        /* Construct C4 frame */
+                        result = wlp_build_assoc_c4(wlp, wss, &resp);
+                        if (result < 0) {
+                                dev_err(dev, "WLP: Unable to construct C4 "
+                                        "message.\n");
+                                goto out;
+                        }
+                }
+        } else {
+                d_printf(6, dev, "WSSID from C3 frame is not known locally "
+                         "or is not active\n");
+                /* Construct F0 frame */
+                result = wlp_build_assoc_f0(wlp, &resp, WLP_ASSOC_ERROR_INV);
+                if (result < 0) {
+                        dev_err(dev, "WLP: Unable to construct F0 message.\n");
+                        goto out;
+                }
+        }
+        /* Send C4 frame */
+        d_printf(6, dev, "Transmitting response (C4/F0) frame to %02x:%02x \n",
+                 src->data[1], src->data[0]);
+        BUG_ON(wlp->xmit_frame == NULL);
+        result = wlp->xmit_frame(wlp, resp, src);
+        if (result < 0) {
+                dev_err(dev, "WLP: Unable to transmit response association "
+                        "message: %d\n", result);
+                if (result == -ENXIO)
+                        dev_err(dev, "WLP: Is network interface up? \n");
+                /* We could try again ... */
+                dev_kfree_skb_any(resp); /* we need to free if tx fails */
+        }
+out:
+        kfree_skb(frame_ctx->skb);
+        kfree(frame_ctx);
+        mutex_unlock(&wss->mutex);
+        d_fnend(6, dev, "WLP: handle C3 frame. wlp = %p, skb = %p\n",
+                wlp, skb);
+}
+
+
diff --git a/drivers/uwb/wlp/sysfs.c b/drivers/uwb/wlp/sysfs.c
new file mode 100644
index 000000000000..1bb9b1f97d47
--- /dev/null
+++ b/drivers/uwb/wlp/sysfs.c
@@ -0,0 +1,709 @@
+/*
+ * WiMedia Logical Link Control Protocol (WLP)
+ * sysfs functions
+ *
+ * Copyright (C) 2007 Intel Corporation
+ * Reinette Chatre <reinette.chatre@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: Docs
+ *
+ */
+
+#include <linux/wlp.h>
+#include "wlp-internal.h"
+
+static
+size_t wlp_wss_wssid_e_print(char *buf, size_t bufsize,
+                             struct wlp_wssid_e *wssid_e)
+{
+        size_t used = 0;
+        used += scnprintf(buf, bufsize, " WSS: ");
+        used += wlp_wss_uuid_print(buf + used, bufsize - used,
+                                   &wssid_e->wssid);
+
+        if (wssid_e->info != NULL) {
+                used += scnprintf(buf + used, bufsize - used, " ");
+                used += uwb_mac_addr_print(buf + used, bufsize - used,
+                                           &wssid_e->info->bcast);
+                used += scnprintf(buf + used, bufsize - used, " %u %u %s\n",
+                                  wssid_e->info->accept_enroll,
+                                  wssid_e->info->sec_status,
+                                  wssid_e->info->name);
+        }
+        return used;
+}
+
+/**
+ * Print out information learned from neighbor discovery
+ *
+ * Some fields being printed may not be included in the device discovery
+ * information (it is not mandatory). We are thus careful how the
+ * information is printed to ensure it is clear to the user what field is
+ * being referenced.
+ * The information being printed is for one time use - temporary storage is
+ * cleaned after it is printed.
+ *
+ * Ideally sysfs output should be on one line. The information printed here
+ * contain a few strings so it will be hard to parse if they are all
+ * printed on the same line - without agreeing on a standard field
+ * separator.
+ */
+static
+ssize_t wlp_wss_neighborhood_print_remove(struct wlp *wlp, char *buf,
+                                   size_t bufsize)
+{
+        size_t used = 0;
+        struct wlp_neighbor_e *neighb;
+        struct wlp_wssid_e *wssid_e;
+
+        mutex_lock(&wlp->nbmutex);
+        used = scnprintf(buf, bufsize, "#Neighbor information\n"
+                         "#uuid dev_addr\n"
+                         "# Device Name:\n# Model Name:\n# Manufacturer:\n"
+                         "# Model Nr:\n# Serial:\n"
+                         "# Pri Dev type: CategoryID OUI OUISubdiv "
+                         "SubcategoryID\n"
+                         "# WSS: WSSID WSS_name accept_enroll sec_status "
+                         "bcast\n"
+                         "# WSS: WSSID WSS_name accept_enroll sec_status "
+                         "bcast\n\n");
+        list_for_each_entry(neighb, &wlp->neighbors, node) {
+                if (bufsize - used <= 0)
+                        goto out;
+                used += wlp_wss_uuid_print(buf + used, bufsize - used,
+                                           &neighb->uuid);
+                buf[used++] = ' ';
+                used += uwb_dev_addr_print(buf + used, bufsize - used,
+                                           &neighb->uwb_dev->dev_addr);
+                if (neighb->info != NULL)
+                        used += scnprintf(buf + used, bufsize - used,
+                                          "\n Device Name: %s\n"
+                                          " Model Name: %s\n"
+                                          " Manufacturer:%s \n"
+                                          " Model Nr: %s\n"
+                                          " Serial: %s\n"
+                                          " Pri Dev type: "
+                                          "%u %02x:%02x:%02x %u %u\n",
+                                          neighb->info->name,
+                                          neighb->info->model_name,
+                                          neighb->info->manufacturer,
+                                          neighb->info->model_nr,
+                                          neighb->info->serial,
+                                          neighb->info->prim_dev_type.category,
+                                          neighb->info->prim_dev_type.OUI[0],
+                                          neighb->info->prim_dev_type.OUI[1],
+                                          neighb->info->prim_dev_type.OUI[2],
+                                          neighb->info->prim_dev_type.OUIsubdiv,
+                                          neighb->info->prim_dev_type.subID);
+                list_for_each_entry(wssid_e, &neighb->wssid, node) {
+                        used += wlp_wss_wssid_e_print(buf + used,
+                                                      bufsize - used,
+                                                      wssid_e);
+                }
+                buf[used++] = '\n';
+                wlp_remove_neighbor_tmp_info(neighb);
+        }
+
+
+out:
+        mutex_unlock(&wlp->nbmutex);
+        return used;
+}
+
+
+/**
+ * Show properties of all WSS in neighborhood.
+ *
+ * Will trigger a complete discovery of WSS activated by this device and
+ * its neighbors.
+ */
+ssize_t wlp_neighborhood_show(struct wlp *wlp, char *buf)
+{
+        wlp_discover(wlp);
+        return wlp_wss_neighborhood_print_remove(wlp, buf, PAGE_SIZE);
+}
+EXPORT_SYMBOL_GPL(wlp_neighborhood_show);
+
+static
+ssize_t __wlp_wss_properties_show(struct wlp_wss *wss, char *buf,
+                                  size_t bufsize)
+{
+        ssize_t result;
+
+        result = wlp_wss_uuid_print(buf, bufsize, &wss->wssid);
+        result += scnprintf(buf + result, bufsize - result, " ");
+        result += uwb_mac_addr_print(buf + result, bufsize - result,
+                                     &wss->bcast);
+        result += scnprintf(buf + result, bufsize - result,
+                            " 0x%02x %u ", wss->hash, wss->secure_status);
+        result += wlp_wss_key_print(buf + result, bufsize - result,
+                                    wss->master_key);
+        result += scnprintf(buf + result, bufsize - result, " 0x%02x ",
+                            wss->tag);
+        result += uwb_mac_addr_print(buf + result, bufsize - result,
+                                     &wss->virtual_addr);
+        result += scnprintf(buf + result, bufsize - result, " %s", wss->name);
+        result += scnprintf(buf + result, bufsize - result,
+                            "\n\n#WSSID\n#WSS broadcast address\n"
+                            "#WSS hash\n#WSS secure status\n"
+                            "#WSS master key\n#WSS local tag\n"
+                            "#WSS local virtual EUI-48\n#WSS name\n");
+        return result;
+}
+
+/**
+ * Show which WSS is activated.
+ */
+ssize_t wlp_wss_activate_show(struct wlp_wss *wss, char *buf)
+{
+        int result = 0;
+
+        if (mutex_lock_interruptible(&wss->mutex))
+                goto out;
+        if (wss->state >= WLP_WSS_STATE_ACTIVE)
+                result = __wlp_wss_properties_show(wss, buf, PAGE_SIZE);
+        else
+                result = scnprintf(buf, PAGE_SIZE, "No local WSS active.\n");
+        result += scnprintf(buf + result, PAGE_SIZE - result,
+                        "\n\n"
+                        "# echo WSSID SECURE_STATUS ACCEPT_ENROLLMENT "
+                        "NAME #create new WSS\n"
+                        "# echo WSSID [DEV ADDR] #enroll in and activate "
+                        "existing WSS, can request registrar\n"
+                        "#\n"
+                        "# WSSID is a 16 byte hex array. Eg. 12 A3 3B ... \n"
+                        "# SECURE_STATUS 0 - unsecure, 1 - secure (default)\n"
+                        "# ACCEPT_ENROLLMENT 0 - no, 1 - yes (default)\n"
+                        "# NAME is the text string identifying the WSS\n"
+                        "# DEV ADDR is the device address of neighbor "
+                        "that should be registrar. Eg. 32:AB\n");
+
+        mutex_unlock(&wss->mutex);
+out:
+        return result;
+
+}
+EXPORT_SYMBOL_GPL(wlp_wss_activate_show);
+
+/**
+ * Create/activate a new WSS or enroll/activate in neighboring WSS
+ *
+ * The user can provide the WSSID of a WSS in which it wants to enroll.
+ * Only the WSSID is necessary if the WSS have been discovered before. If
+ * the WSS has not been discovered before, or the user wants to use a
+ * particular neighbor as its registrar, then the user can also provide a
+ * device address or the neighbor that will be used as registrar.
+ *
+ * A new WSS is created when the user provides a WSSID, secure status, and
+ * WSS name.
+ */
+ssize_t wlp_wss_activate_store(struct wlp_wss *wss,
+                               const char *buf, size_t size)
+{
+        ssize_t result = -EINVAL;
+        struct wlp_uuid wssid;
+        struct uwb_dev_addr dev;
+        struct uwb_dev_addr bcast = {.data = {0xff, 0xff} };
+        char name[65];
+        unsigned sec_status, accept;
+        memset(name, 0, sizeof(name));
+        result = sscanf(buf, "%02hhx %02hhx %02hhx %02hhx "
+                        "%02hhx %02hhx %02hhx %02hhx "
+                        "%02hhx %02hhx %02hhx %02hhx "
+                        "%02hhx %02hhx %02hhx %02hhx "
+                        "%02hhx:%02hhx",
+                        &wssid.data[0] , &wssid.data[1],
+                        &wssid.data[2] , &wssid.data[3],
+                        &wssid.data[4] , &wssid.data[5],
+                        &wssid.data[6] , &wssid.data[7],
+                        &wssid.data[8] , &wssid.data[9],
+                        &wssid.data[10], &wssid.data[11],
+                        &wssid.data[12], &wssid.data[13],
+                        &wssid.data[14], &wssid.data[15],
+                        &dev.data[1], &dev.data[0]);
+        if (result == 16 || result == 17) {
+                result = sscanf(buf, "%02hhx %02hhx %02hhx %02hhx "
+                                "%02hhx %02hhx %02hhx %02hhx "
+                                "%02hhx %02hhx %02hhx %02hhx "
+                                "%02hhx %02hhx %02hhx %02hhx "
+                                "%u %u %64c",
+                                &wssid.data[0] , &wssid.data[1],
+                                &wssid.data[2] , &wssid.data[3],
+                                &wssid.data[4] , &wssid.data[5],
+                                &wssid.data[6] , &wssid.data[7],
+                                &wssid.data[8] , &wssid.data[9],
+                                &wssid.data[10], &wssid.data[11],
+                                &wssid.data[12], &wssid.data[13],
+                                &wssid.data[14], &wssid.data[15],
+                                &sec_status, &accept, name);
+                if (result == 16)
+                        result = wlp_wss_enroll_activate(wss, &wssid, &bcast);
+                else if (result == 19) {
+                        sec_status = sec_status == 0 ? 0 : 1;
+                        accept = accept == 0 ? 0 : 1;
+                        /* We read name using %c, so the newline needs to be
+                         * removed */
+                        if (strlen(name) != sizeof(name) - 1)
+                                name[strlen(name) - 1] = '\0';
+                        result = wlp_wss_create_activate(wss, &wssid, name,
+                                                         sec_status, accept);
+                } else
+                        result = -EINVAL;
+        } else if (result == 18)
+                result = wlp_wss_enroll_activate(wss, &wssid, &dev);
+        else
+                result = -EINVAL;
+        return result < 0 ? result : size;
+}
+EXPORT_SYMBOL_GPL(wlp_wss_activate_store);
+
+/**
+ * Show the UUID of this host
+ */
+ssize_t wlp_uuid_show(struct wlp *wlp, char *buf)
+{
+        ssize_t result = 0;
+
+        mutex_lock(&wlp->mutex);
+        result = wlp_wss_uuid_print(buf, PAGE_SIZE, &wlp->uuid);
+        buf[result++] = '\n';
+        mutex_unlock(&wlp->mutex);
+        return result;
+}
+EXPORT_SYMBOL_GPL(wlp_uuid_show);
+
+/**
+ * Store a new UUID for this host
+ *
+ * According to the spec this should be encoded as an octet string in the
+ * order the octets are shown in string representation in RFC 4122 (WLP
+ * 0.99 [Table 6])
+ *
+ * We do not check value provided by user.
+ */
+ssize_t wlp_uuid_store(struct wlp *wlp, const char *buf, size_t size)
+{
+        ssize_t result;
+        struct wlp_uuid uuid;
+
+        mutex_lock(&wlp->mutex);
+        result = sscanf(buf, "%02hhx %02hhx %02hhx %02hhx "
+                        "%02hhx %02hhx %02hhx %02hhx "
+                        "%02hhx %02hhx %02hhx %02hhx "
+                        "%02hhx %02hhx %02hhx %02hhx ",
+                        &uuid.data[0] , &uuid.data[1],
+                        &uuid.data[2] , &uuid.data[3],
+                        &uuid.data[4] , &uuid.data[5],
+                        &uuid.data[6] , &uuid.data[7],
+                        &uuid.data[8] , &uuid.data[9],
+                        &uuid.data[10], &uuid.data[11],
+                        &uuid.data[12], &uuid.data[13],
+                        &uuid.data[14], &uuid.data[15]);
+        if (result != 16) {
+                result = -EINVAL;
+                goto error;
+        }
+        wlp->uuid = uuid;
+error:
+        mutex_unlock(&wlp->mutex);
+        return result < 0 ? result : size;
+}
+EXPORT_SYMBOL_GPL(wlp_uuid_store);
+
+/**
+ * Show contents of members of device information structure
+ */
+#define wlp_dev_info_show(type)                                         \
+ssize_t wlp_dev_##type##_show(struct wlp *wlp, char *buf)               \
+{                                                                       \
+        ssize_t result = 0;                                             \
+        mutex_lock(&wlp->mutex);                                        \
+        if (wlp->dev_info == NULL) {                                    \
+                result = __wlp_setup_device_info(wlp);                  \
+                if (result < 0)                                         \
+                        goto out;                                       \
+        }                                                               \
+        result = scnprintf(buf, PAGE_SIZE, "%s\n", wlp->dev_info->type);\
+out:                                                                    \
+        mutex_unlock(&wlp->mutex);                                      \
+        return result;                                                  \
+}                                                                       \
+EXPORT_SYMBOL_GPL(wlp_dev_##type##_show);
+
+wlp_dev_info_show(name)
+wlp_dev_info_show(model_name)
+wlp_dev_info_show(model_nr)
+wlp_dev_info_show(manufacturer)
+wlp_dev_info_show(serial)
+
+/**
+ * Store contents of members of device information structure
+ */
+#define wlp_dev_info_store(type, len)                                   \
+ssize_t wlp_dev_##type##_store(struct wlp *wlp, const char *buf, size_t size)\
+{                                                                       \
+        ssize_t result;                                                 \
+        char format[10];                                                \
+        mutex_lock(&wlp->mutex);                                        \
+        if (wlp->dev_info == NULL) {                                    \
+                result = __wlp_alloc_device_info(wlp);                  \
+                if (result < 0)                                         \
+                        goto out;                                       \
+        }                                                               \
+        memset(wlp->dev_info->type, 0, sizeof(wlp->dev_info->type));    \
+        sprintf(format, "%%%uc", len);                                  \
+        result = sscanf(buf, format, wlp->dev_info->type);              \
+out:                                                                    \
+        mutex_unlock(&wlp->mutex);                                      \
+        return result < 0 ? result : size;                              \
+}                                                                       \
+EXPORT_SYMBOL_GPL(wlp_dev_##type##_store);
+
+wlp_dev_info_store(name, 32)
+wlp_dev_info_store(manufacturer, 64)
+wlp_dev_info_store(model_name, 32)
+wlp_dev_info_store(model_nr, 32)
+wlp_dev_info_store(serial, 32)
+
+static
+const char *__wlp_dev_category[] = {
+        [WLP_DEV_CAT_COMPUTER] = "Computer",
+        [WLP_DEV_CAT_INPUT] = "Input device",
+        [WLP_DEV_CAT_PRINT_SCAN_FAX_COPIER] = "Printer, scanner, FAX, or "
+                                              "Copier",
+        [WLP_DEV_CAT_CAMERA] = "Camera",
+        [WLP_DEV_CAT_STORAGE] = "Storage Network",
+        [WLP_DEV_CAT_INFRASTRUCTURE] = "Infrastructure",
+        [WLP_DEV_CAT_DISPLAY] = "Display",
+        [WLP_DEV_CAT_MULTIM] = "Multimedia device",
+        [WLP_DEV_CAT_GAMING] = "Gaming device",
+        [WLP_DEV_CAT_TELEPHONE] = "Telephone",
+        [WLP_DEV_CAT_OTHER] = "Other",
+};
+
+static
+const char *wlp_dev_category_str(unsigned cat)
+{
+        if ((cat >= WLP_DEV_CAT_COMPUTER && cat <= WLP_DEV_CAT_TELEPHONE)
+            || cat == WLP_DEV_CAT_OTHER)
+                return __wlp_dev_category[cat];
+        return "unknown category";
+}
+
+ssize_t wlp_dev_prim_category_show(struct wlp *wlp, char *buf)
+{
+        ssize_t result = 0;
+        mutex_lock(&wlp->mutex);
+        if (wlp->dev_info == NULL) {
+                result = __wlp_setup_device_info(wlp);
+                if (result < 0)
+                        goto out;
+        }
+        result = scnprintf(buf, PAGE_SIZE, "%s\n",
+                  wlp_dev_category_str(wlp->dev_info->prim_dev_type.category));
+out:
+        mutex_unlock(&wlp->mutex);
+        return result;
+}
+EXPORT_SYMBOL_GPL(wlp_dev_prim_category_show);
+
+ssize_t wlp_dev_prim_category_store(struct wlp *wlp, const char *buf,
+                                    size_t size)
+{
+        ssize_t result;
+        u16 cat;
+        mutex_lock(&wlp->mutex);
+        if (wlp->dev_info == NULL) {
+                result = __wlp_alloc_device_info(wlp);
+                if (result < 0)
+                        goto out;
+        }
+        result = sscanf(buf, "%hu", &cat);
+        if ((cat >= WLP_DEV_CAT_COMPUTER && cat <= WLP_DEV_CAT_TELEPHONE)
+            || cat == WLP_DEV_CAT_OTHER)
+                wlp->dev_info->prim_dev_type.category = cat;
+        else
+                result = -EINVAL;
+out:
+        mutex_unlock(&wlp->mutex);
+        return result < 0 ? result : size;
+}
+EXPORT_SYMBOL_GPL(wlp_dev_prim_category_store);
+
+ssize_t wlp_dev_prim_OUI_show(struct wlp *wlp, char *buf)
+{
+        ssize_t result = 0;
+        mutex_lock(&wlp->mutex);
+        if (wlp->dev_info == NULL) {
+                result = __wlp_setup_device_info(wlp);
+                if (result < 0)
+                        goto out;
+        }
+        result = scnprintf(buf, PAGE_SIZE, "%02x:%02x:%02x\n",
+                           wlp->dev_info->prim_dev_type.OUI[0],
+                           wlp->dev_info->prim_dev_type.OUI[1],
+                           wlp->dev_info->prim_dev_type.OUI[2]);
+out:
+        mutex_unlock(&wlp->mutex);
+        return result;
+}
+EXPORT_SYMBOL_GPL(wlp_dev_prim_OUI_show);
+
+ssize_t wlp_dev_prim_OUI_store(struct wlp *wlp, const char *buf, size_t size)
+{
+        ssize_t result;
+        u8 OUI[3];
+        mutex_lock(&wlp->mutex);
+        if (wlp->dev_info == NULL) {
+                result = __wlp_alloc_device_info(wlp);
+                if (result < 0)
+                        goto out;
+        }
+        result = sscanf(buf, "%hhx:%hhx:%hhx",
+                        &OUI[0], &OUI[1], &OUI[2]);
+        if (result != 3) {
+                result = -EINVAL;
+                goto out;
+        } else
+                memcpy(wlp->dev_info->prim_dev_type.OUI, OUI, sizeof(OUI));
+out:
+        mutex_unlock(&wlp->mutex);
+        return result < 0 ? result : size;
+}
+EXPORT_SYMBOL_GPL(wlp_dev_prim_OUI_store);
+
+
+ssize_t wlp_dev_prim_OUI_sub_show(struct wlp *wlp, char *buf)
+{
+        ssize_t result = 0;
+        mutex_lock(&wlp->mutex);
+        if (wlp->dev_info == NULL) {
+                result = __wlp_setup_device_info(wlp);
+                if (result < 0)
+                        goto out;
+        }
+        result = scnprintf(buf, PAGE_SIZE, "%u\n",
+                           wlp->dev_info->prim_dev_type.OUIsubdiv);
+out:
+        mutex_unlock(&wlp->mutex);
+        return result;
+}
+EXPORT_SYMBOL_GPL(wlp_dev_prim_OUI_sub_show);
+
+ssize_t wlp_dev_prim_OUI_sub_store(struct wlp *wlp, const char *buf,
+                                   size_t size)
+{
+        ssize_t result;
+        unsigned sub;
+        u8 max_sub = ~0;
+        mutex_lock(&wlp->mutex);
+        if (wlp->dev_info == NULL) {
+                result = __wlp_alloc_device_info(wlp);
+                if (result < 0)
+                        goto out;
+        }
+        result = sscanf(buf, "%u", &sub);
+        if (sub <= max_sub)
+                wlp->dev_info->prim_dev_type.OUIsubdiv = sub;
+        else
+                result = -EINVAL;
+out:
+        mutex_unlock(&wlp->mutex);
+        return result < 0 ? result : size;
+}
+EXPORT_SYMBOL_GPL(wlp_dev_prim_OUI_sub_store);
+
+ssize_t wlp_dev_prim_subcat_show(struct wlp *wlp, char *buf)
+{
+        ssize_t result = 0;
+        mutex_lock(&wlp->mutex);
+        if (wlp->dev_info == NULL) {
+                result = __wlp_setup_device_info(wlp);
+                if (result < 0)
+                        goto out;
+        }
+        result = scnprintf(buf, PAGE_SIZE, "%u\n",
+                           wlp->dev_info->prim_dev_type.subID);
+out:
+        mutex_unlock(&wlp->mutex);
+        return result;
+}
+EXPORT_SYMBOL_GPL(wlp_dev_prim_subcat_show);
+
+ssize_t wlp_dev_prim_subcat_store(struct wlp *wlp, const char *buf,
+                                  size_t size)
+{
+        ssize_t result;
+        unsigned sub;
+        __le16 max_sub = ~0;
+        mutex_lock(&wlp->mutex);
+        if (wlp->dev_info == NULL) {
+                result = __wlp_alloc_device_info(wlp);
+                if (result < 0)
+                        goto out;
+        }
+        result = sscanf(buf, "%u", &sub);
+        if (sub <= max_sub)
+                wlp->dev_info->prim_dev_type.subID = sub;
+        else
+                result = -EINVAL;
+out:
+        mutex_unlock(&wlp->mutex);
+        return result < 0 ? result : size;
+}
+EXPORT_SYMBOL_GPL(wlp_dev_prim_subcat_store);
+
+/**
+ * Subsystem implementation for interaction with individual WSS via sysfs
+ *
+ * Followed instructions for subsystem in Documentation/filesystems/sysfs.txt
+ */
+
+#define kobj_to_wlp_wss(obj) container_of(obj, struct wlp_wss, kobj)
+#define attr_to_wlp_wss_attr(_attr) \
+        container_of(_attr, struct wlp_wss_attribute, attr)
+
+/**
+ * Sysfs subsystem: forward read calls
+ *
+ * Sysfs operation for forwarding read call to the show method of the
+ * attribute owner
+ */
+static
+ssize_t wlp_wss_attr_show(struct kobject *kobj, struct attribute *attr,
+                          char *buf)
+{
+        struct wlp_wss_attribute *wss_attr = attr_to_wlp_wss_attr(attr);
+        struct wlp_wss *wss = kobj_to_wlp_wss(kobj);
+        ssize_t ret = -EIO;
+
+        if (wss_attr->show)
+                ret = wss_attr->show(wss, buf);
+        return ret;
+}
+/**
+ * Sysfs subsystem: forward write calls
+ *
+ * Sysfs operation for forwarding write call to the store method of the
+ * attribute owner
+ */
+static
+ssize_t wlp_wss_attr_store(struct kobject *kobj, struct attribute *attr,
+                           const char *buf, size_t count)
+{
+        struct wlp_wss_attribute *wss_attr = attr_to_wlp_wss_attr(attr);
+        struct wlp_wss *wss = kobj_to_wlp_wss(kobj);
+        ssize_t ret = -EIO;
+
+        if (wss_attr->store)
+                ret = wss_attr->store(wss, buf, count);
+        return ret;
+}
+
+static
+struct sysfs_ops wss_sysfs_ops = {
+        .show   = wlp_wss_attr_show,
+        .store  = wlp_wss_attr_store,
+};
+
+struct kobj_type wss_ktype = {
+        .release        = wlp_wss_release,
+        .sysfs_ops      = &wss_sysfs_ops,
+};
+
+
+/**
+ * Sysfs files for individual WSS
+ */
+
+/**
+ * Print static properties of this WSS
+ *
+ * The name of a WSS may not be null teminated. It's max size is 64 bytes
+ * so we copy it to a larger array just to make sure we print sane data.
+ */
+static ssize_t wlp_wss_properties_show(struct wlp_wss *wss, char *buf)
+{
+        int result = 0;
+
+        if (mutex_lock_interruptible(&wss->mutex))
+                goto out;
+        result = __wlp_wss_properties_show(wss, buf, PAGE_SIZE);
+        mutex_unlock(&wss->mutex);
+out:
+        return result;
+}
+WSS_ATTR(properties, S_IRUGO, wlp_wss_properties_show, NULL);
+
+/**
+ * Print all connected members of this WSS
+ * The EDA cache contains all members of WSS neighborhood.
+ */
+static ssize_t wlp_wss_members_show(struct wlp_wss *wss, char *buf)
+{
+        struct wlp *wlp = container_of(wss, struct wlp, wss);
+        return wlp_eda_show(wlp, buf);
+}
+WSS_ATTR(members, S_IRUGO, wlp_wss_members_show, NULL);
+
+static
+const char *__wlp_strstate[] = {
+        "none",
+        "partially enrolled",
+        "enrolled",
+        "active",
+        "connected",
+};
+
+static const char *wlp_wss_strstate(unsigned state)
+{
+        if (state >= ARRAY_SIZE(__wlp_strstate))
+                return "unknown state";
+        return __wlp_strstate[state];
+}
+
+/*
+ * Print current state of this WSS
+ */
+static ssize_t wlp_wss_state_show(struct wlp_wss *wss, char *buf)
+{
+        int result = 0;
+
+        if (mutex_lock_interruptible(&wss->mutex))
+                goto out;
+        result = scnprintf(buf, PAGE_SIZE, "%s\n",
+                           wlp_wss_strstate(wss->state));
+        mutex_unlock(&wss->mutex);
+out:
+        return result;
+}
+WSS_ATTR(state, S_IRUGO, wlp_wss_state_show, NULL);
+
+
+static
+struct attribute *wss_attrs[] = {
+        &wss_attr_properties.attr,
+        &wss_attr_members.attr,
+        &wss_attr_state.attr,
+        NULL,
+};
+
+struct attribute_group wss_attr_group = {
+        .name = NULL,   /* we want them in the same directory */
+        .attrs = wss_attrs,
+};
diff --git a/drivers/uwb/wlp/txrx.c b/drivers/uwb/wlp/txrx.c
new file mode 100644
index 000000000000..c701bd1a2887
--- /dev/null
+++ b/drivers/uwb/wlp/txrx.c
@@ -0,0 +1,374 @@
+/*
+ * WiMedia Logical Link Control Protocol (WLP)
+ * Message exchange infrastructure
+ *
+ * Copyright (C) 2007 Intel Corporation
+ * Reinette Chatre <reinette.chatre@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: Docs
+ *
+ */
+
+#include <linux/etherdevice.h>
+#include <linux/wlp.h>
+#define D_LOCAL 5
+#include <linux/uwb/debug.h>
+#include "wlp-internal.h"
+
+
+/**
+ * Direct incoming association msg to correct parsing routine
+ *
+ * We only expect D1, E1, C1, C3 messages as new. All other incoming
+ * association messages should form part of an established session that is
+ * handled elsewhere.
+ * The handling of these messages often require calling sleeping functions
+ * - this cannot be done in interrupt context. We use the kernel's
+ * workqueue to handle these messages.
+ */
+static
+void wlp_direct_assoc_frame(struct wlp *wlp, struct sk_buff *skb,
+                           struct uwb_dev_addr *src)
+{
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        struct wlp_frame_assoc *assoc = (void *) skb->data;
+        struct wlp_assoc_frame_ctx *frame_ctx;
+        d_fnstart(5, dev, "wlp %p, skb %p\n", wlp, skb);
+        frame_ctx = kmalloc(sizeof(*frame_ctx), GFP_ATOMIC);
+        if (frame_ctx == NULL) {
+                dev_err(dev, "WLP: Unable to allocate memory for association "
+                        "frame handling.\n");
+                kfree_skb(skb);
+                goto out;
+        }
+        frame_ctx->wlp = wlp;
+        frame_ctx->skb = skb;
+        frame_ctx->src = *src;
+        switch (assoc->type) {
+        case WLP_ASSOC_D1:
+                d_printf(5, dev, "Received a D1 frame.\n");
+                INIT_WORK(&frame_ctx->ws, wlp_handle_d1_frame);
+                schedule_work(&frame_ctx->ws);
+                break;
+        case WLP_ASSOC_E1:
+                d_printf(5, dev, "Received a E1 frame. FIXME?\n");
+                kfree_skb(skb); /* Temporary until we handle it */
+                kfree(frame_ctx); /* Temporary until we handle it */
+                break;
+        case WLP_ASSOC_C1:
+                d_printf(5, dev, "Received a C1 frame.\n");
+                INIT_WORK(&frame_ctx->ws, wlp_handle_c1_frame);
+                schedule_work(&frame_ctx->ws);
+                break;
+        case WLP_ASSOC_C3:
+                d_printf(5, dev, "Received a C3 frame.\n");
+                INIT_WORK(&frame_ctx->ws, wlp_handle_c3_frame);
+                schedule_work(&frame_ctx->ws);
+                break;
+        default:
+                dev_err(dev, "Received unexpected association frame. "
+                        "Type = %d \n", assoc->type);
+                kfree_skb(skb);
+                kfree(frame_ctx);
+                break;
+        }
+out:
+        d_fnend(5, dev, "wlp %p\n", wlp);
+}
+
+/**
+ * Process incoming association frame
+ *
+ * Although it could be possible to deal with some incoming association
+ * messages without creating a new session we are keeping things simple. We
+ * do not accept new association messages if there is a session in progress
+ * and the messages do not belong to that session.
+ *
+ * If an association message arrives that causes the creation of a session
+ * (WLP_ASSOC_E1) while we are in the process of creating a session then we
+ * rely on the neighbor mutex to protect the data. That is, the new session
+ * will not be started until the previous is completed.
+ */
+static
+void wlp_receive_assoc_frame(struct wlp *wlp, struct sk_buff *skb,
+                             struct uwb_dev_addr *src)
+{
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        struct wlp_frame_assoc *assoc = (void *) skb->data;
+        struct wlp_session *session = wlp->session;
+        u8 version;
+        d_fnstart(5, dev, "wlp %p, skb %p\n", wlp, skb);
+
+        if (wlp_get_version(wlp, &assoc->version, &version,
+                            sizeof(assoc->version)) < 0)
+                goto error;
+        if (version != WLP_VERSION) {
+                dev_err(dev, "Unsupported WLP version in association "
+                        "message.\n");
+                goto error;
+        }
+        if (session != NULL) {
+                /* Function that created this session is still holding the
+                 * &wlp->mutex to protect this session. */
+                if (assoc->type == session->exp_message ||
+                    assoc->type == WLP_ASSOC_F0) {
+                        if (!memcmp(&session->neighbor_addr, src,
+                                   sizeof(*src))) {
+                                session->data = skb;
+                                (session->cb)(wlp);
+                        } else {
+                                dev_err(dev, "Received expected message from "
+                                        "unexpected source.  Expected message "
+                                        "%d or F0 from %02x:%02x, but received "
+                                        "it from %02x:%02x. Dropping.\n",
+                                        session->exp_message,
+                                        session->neighbor_addr.data[1],
+                                        session->neighbor_addr.data[0],
+                                        src->data[1], src->data[0]);
+                                goto error;
+                        }
+                } else {
+                        dev_err(dev, "Association already in progress. "
+                                "Dropping.\n");
+                        goto error;
+                }
+        } else {
+                wlp_direct_assoc_frame(wlp, skb, src);
+        }
+        d_fnend(5, dev, "wlp %p\n", wlp);
+        return;
+error:
+        kfree_skb(skb);
+        d_fnend(5, dev, "wlp %p\n", wlp);
+}
+
+/**
+ * Verify incoming frame is from connected neighbor, prep to pass to WLP client
+ *
+ * Verification proceeds according to WLP 0.99 [7.3.1]. The source address
+ * is used to determine which neighbor is sending the frame and the WSS tag
+ * is used to know to which WSS the frame belongs (we only support one WSS
+ * so this test is straight forward).
+ * With the WSS found we need to ensure that we are connected before
+ * allowing the exchange of data frames.
+ */
+static
+int wlp_verify_prep_rx_frame(struct wlp *wlp, struct sk_buff *skb,
+                             struct uwb_dev_addr *src)
+{
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        int result = -EINVAL;
+        struct wlp_eda_node eda_entry;
+        struct wlp_frame_std_abbrv_hdr *hdr = (void *) skb->data;
+
+        d_fnstart(6, dev, "wlp %p, skb %p \n", wlp, skb);
+        /*verify*/
+        result = wlp_copy_eda_node(&wlp->eda, src, &eda_entry);
+        if (result < 0) {
+                if (printk_ratelimit())
+                        dev_err(dev, "WLP: Incoming frame is from unknown "
+                                "neighbor %02x:%02x.\n", src->data[1],
+                                src->data[0]);
+                goto out;
+        }
+        if (hdr->tag != eda_entry.tag) {
+                if (printk_ratelimit())
+                        dev_err(dev, "WLP: Tag of incoming frame from "
+                                "%02x:%02x does not match expected tag. "
+                                "Received 0x%02x, expected 0x%02x. \n",
+                                src->data[1], src->data[0], hdr->tag,
+                                eda_entry.tag);
+                result = -EINVAL;
+                goto out;
+        }
+        if (eda_entry.state != WLP_WSS_CONNECTED) {
+                if (printk_ratelimit())
+                        dev_err(dev, "WLP: Incoming frame from "
+                                "%02x:%02x does is not from connected WSS.\n",
+                                src->data[1], src->data[0]);
+                result = -EINVAL;
+                goto out;
+        }
+        /*prep*/
+        skb_pull(skb, sizeof(*hdr));
+out:
+        d_fnend(6, dev, "wlp %p, skb %p, result = %d \n", wlp, skb, result);
+        return result;
+}
+
+/**
+ * Receive a WLP frame from device
+ *
+ * @returns: 1 if calling function should free the skb
+ *           0 if it successfully handled skb and freed it
+ *           0 if error occured, will free skb in this case
+ */
+int wlp_receive_frame(struct device *dev, struct wlp *wlp, struct sk_buff *skb,
+                      struct uwb_dev_addr *src)
+{
+        unsigned len = skb->len;
+        void *ptr = skb->data;
+        struct wlp_frame_hdr *hdr;
+        int result = 0;
+
+        d_fnstart(6, dev, "skb (%p), len (%u)\n", skb, len);
+        if (len < sizeof(*hdr)) {
+                dev_err(dev, "Not enough data to parse WLP header.\n");
+                result = -EINVAL;
+                goto out;
+        }
+        hdr = ptr;
+        d_dump(6, dev, hdr, sizeof(*hdr));
+        if (le16_to_cpu(hdr->mux_hdr) != WLP_PROTOCOL_ID) {
+                dev_err(dev, "Not a WLP frame type.\n");
+                result = -EINVAL;
+                goto out;
+        }
+        switch (hdr->type) {
+        case WLP_FRAME_STANDARD:
+                if (len < sizeof(struct wlp_frame_std_abbrv_hdr)) {
+                        dev_err(dev, "Not enough data to parse Standard "
+                                "WLP header.\n");
+                        goto out;
+                }
+                result = wlp_verify_prep_rx_frame(wlp, skb, src);
+                if (result < 0) {
+                        if (printk_ratelimit())
+                                dev_err(dev, "WLP: Verification of frame "
+                                        "from neighbor %02x:%02x failed.\n",
+                                        src->data[1], src->data[0]);
+                        goto out;
+                }
+                result = 1;
+                break;
+        case WLP_FRAME_ABBREVIATED:
+                dev_err(dev, "Abbreviated frame received. FIXME?\n");
+                kfree_skb(skb);
+                break;
+        case WLP_FRAME_CONTROL:
+                dev_err(dev, "Control frame received. FIXME?\n");
+                kfree_skb(skb);
+                break;
+        case WLP_FRAME_ASSOCIATION:
+                if (len < sizeof(struct wlp_frame_assoc)) {
+                        dev_err(dev, "Not enough data to parse Association "
+                                "WLP header.\n");
+                        goto out;
+                }
+                d_printf(5, dev, "Association frame received.\n");
+                wlp_receive_assoc_frame(wlp, skb, src);
+                break;
+        default:
+                dev_err(dev, "Invalid frame received.\n");
+                result = -EINVAL;
+                break;
+        }
+out:
+        if (result < 0) {
+                kfree_skb(skb);
+                result = 0;
+        }
+        d_fnend(6, dev, "skb (%p)\n", skb);
+        return result;
+}
+EXPORT_SYMBOL_GPL(wlp_receive_frame);
+
+
+/**
+ * Verify frame from network stack, prepare for further transmission
+ *
+ * @skb:   the socket buffer that needs to be prepared for transmission (it
+ *         is in need of a WLP header). If this is a broadcast frame we take
+ *         over the entire transmission.
+ *         If it is a unicast the WSS connection should already be established
+ *         and transmission will be done by the calling function.
+ * @dst:   On return this will contain the device address to which the
+ *         frame is destined.
+ * @returns: 0 on success no tx : WLP header sucessfully applied to skb buffer,
+ *                                calling function can proceed with tx
+ *           1 on success with tx : WLP will take over transmission of this
+ *                                  frame
+ *           <0 on error
+ *
+ * The network stack (WLP client) is attempting to transmit a frame. We can
+ * only transmit data if a local WSS is at least active (connection will be
+ * done here if this is a broadcast frame and neighbor also has the WSS
+ * active).
+ *
+ * The frame can be either broadcast or unicast. Broadcast in a WSS is
+ * supported via multicast, but we don't support multicast yet (until
+ * devices start to support MAB IEs). If a broadcast frame needs to be
+ * transmitted it is treated as a unicast frame to each neighbor. In this
+ * case the WLP takes over transmission of the skb and returns 1
+ * to the caller to indicate so. Also, in this case, if a neighbor has the
+ * same WSS activated but is not connected then the WSS connection will be
+ * done at this time. The neighbor's virtual address will be learned at
+ * this time.
+ *
+ * The destination address in a unicast frame is the virtual address of the
+ * neighbor. This address only becomes known when a WSS connection is
+ * established. We thus rely on a broadcast frame to trigger the setup of
+ * WSS connections to all neighbors before we are able to send unicast
+ * frames to them. This seems reasonable as IP would usually use ARP first
+ * before any unicast frames are sent.
+ *
+ * If we are already connected to the neighbor (neighbor's virtual address
+ * is known) we just prepare the WLP header and the caller will continue to
+ * send the frame.
+ *
+ * A failure in this function usually indicates something that cannot be
+ * fixed automatically. So, if this function fails (@return < 0) the calling
+ * function should not retry to send the frame as it will very likely keep
+ * failing.
+ *
+ */
+int wlp_prepare_tx_frame(struct device *dev, struct wlp *wlp,
+                         struct sk_buff *skb, struct uwb_dev_addr *dst)
+{
+        int result = -EINVAL;
+        struct ethhdr *eth_hdr = (void *) skb->data;
+
+        d_fnstart(6, dev, "wlp (%p), skb (%p) \n", wlp, skb);
+        if (is_broadcast_ether_addr(eth_hdr->h_dest)) {
+                d_printf(6, dev, "WLP: handling broadcast frame. \n");
+                result = wlp_eda_for_each(&wlp->eda, wlp_wss_send_copy, skb);
+                if (result < 0) {
+                        if (printk_ratelimit())
+                                dev_err(dev, "Unable to handle broadcast "
+                                        "frame from WLP client.\n");
+                        goto out;
+                }
+                dev_kfree_skb_irq(skb);
+                result = 1;
+                /* Frame will be transmitted by WLP. */
+        } else {
+                d_printf(6, dev, "WLP: handling unicast frame. \n");
+                result = wlp_eda_for_virtual(&wlp->eda, eth_hdr->h_dest, dst,
+                                             wlp_wss_prep_hdr, skb);
+                if (unlikely(result < 0)) {
+                        if (printk_ratelimit())
+                                dev_err(dev, "Unable to prepare "
+                                        "skb for transmission. \n");
+                        goto out;
+                }
+        }
+out:
+        d_fnend(6, dev, "wlp (%p), skb (%p). result = %d \n", wlp, skb, result);
+        return result;
+}
+EXPORT_SYMBOL_GPL(wlp_prepare_tx_frame);
diff --git a/drivers/uwb/wlp/wlp-internal.h b/drivers/uwb/wlp/wlp-internal.h
new file mode 100644
index 000000000000..1c94fabfb1a7
--- /dev/null
+++ b/drivers/uwb/wlp/wlp-internal.h
@@ -0,0 +1,228 @@
+/*
+ * WiMedia Logical Link Control Protocol (WLP)
+ * Internal API
+ *
+ * Copyright (C) 2007 Intel Corporation
+ * Reinette Chatre <reinette.chatre@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ */
+
+#ifndef __WLP_INTERNAL_H__
+#define __WLP_INTERNAL_H__
+
+/**
+ * State of WSS connection
+ *
+ * A device needs to connect to a neighbor in an activated WSS before data
+ * can be transmitted. The spec also distinguishes between a new connection
+ * attempt and a connection attempt after previous connection attempts. The
+ * state WLP_WSS_CONNECT_FAILED is used for this scenario. See WLP 0.99
+ * [7.2.6]
+ */
+enum wlp_wss_connect {
+        WLP_WSS_UNCONNECTED = 0,
+        WLP_WSS_CONNECTED,
+        WLP_WSS_CONNECT_FAILED,
+};
+
+extern struct kobj_type wss_ktype;
+extern struct attribute_group wss_attr_group;
+
+extern int uwb_rc_ie_add(struct uwb_rc *, const struct uwb_ie_hdr *, size_t);
+extern int uwb_rc_ie_rm(struct uwb_rc *, enum uwb_ie);
+
+
+/* This should be changed to a dynamic array where entries are sorted
+ * by eth_addr and search is done in a binary form
+ *
+ * Although thinking twice about it: this technologie's maximum reach
+ * is 10 meters...unless you want to pack too much stuff in around
+ * your radio controller/WLP device, the list will probably not be
+ * too big.
+ *
+ * In any case, there is probably some data structure in the kernel
+ * than we could reused for that already.
+ *
+ * The below structure is really just good while we support one WSS per
+ * host.
+ */
+struct wlp_eda_node {
+        struct list_head list_node;
+        unsigned char eth_addr[ETH_ALEN];
+        struct uwb_dev_addr dev_addr;
+        struct wlp_wss *wss;
+        unsigned char virt_addr[ETH_ALEN];
+        u8 tag;
+        enum wlp_wss_connect state;
+};
+
+typedef int (*wlp_eda_for_each_f)(struct wlp *, struct wlp_eda_node *, void *);
+
+extern void wlp_eda_init(struct wlp_eda *);
+extern void wlp_eda_release(struct wlp_eda *);
+extern int wlp_eda_create_node(struct wlp_eda *,
+                               const unsigned char eth_addr[ETH_ALEN],
+                               const struct uwb_dev_addr *);
+extern void wlp_eda_rm_node(struct wlp_eda *, const struct uwb_dev_addr *);
+extern int wlp_eda_update_node(struct wlp_eda *,
+                               const struct uwb_dev_addr *,
+                               struct wlp_wss *,
+                               const unsigned char virt_addr[ETH_ALEN],
+                               const u8, const enum wlp_wss_connect);
+extern int wlp_eda_update_node_state(struct wlp_eda *,
+                                     const struct uwb_dev_addr *,
+                                     const enum wlp_wss_connect);
+
+extern int wlp_copy_eda_node(struct wlp_eda *, struct uwb_dev_addr *,
+                             struct wlp_eda_node *);
+extern int wlp_eda_for_each(struct wlp_eda *, wlp_eda_for_each_f , void *);
+extern int wlp_eda_for_virtual(struct wlp_eda *,
+                               const unsigned char eth_addr[ETH_ALEN],
+                               struct uwb_dev_addr *,
+                               wlp_eda_for_each_f , void *);
+
+
+extern void wlp_remove_neighbor_tmp_info(struct wlp_neighbor_e *);
+
+extern size_t wlp_wss_key_print(char *, size_t, u8 *);
+
+/* Function called when no more references to WSS exists */
+extern void wlp_wss_release(struct kobject *);
+
+extern void wlp_wss_reset(struct wlp_wss *);
+extern int wlp_wss_create_activate(struct wlp_wss *, struct wlp_uuid *,
+                                   char *, unsigned, unsigned);
+extern int wlp_wss_enroll_activate(struct wlp_wss *, struct wlp_uuid *,
+                                   struct uwb_dev_addr *);
+extern ssize_t wlp_discover(struct wlp *);
+
+extern int wlp_enroll_neighbor(struct wlp *, struct wlp_neighbor_e *,
+                               struct wlp_wss *, struct wlp_uuid *);
+extern int wlp_wss_is_active(struct wlp *, struct wlp_wss *,
+                             struct uwb_dev_addr *);
+
+struct wlp_assoc_conn_ctx {
+        struct work_struct ws;
+        struct wlp *wlp;
+        struct sk_buff *skb;
+        struct wlp_eda_node eda_entry;
+};
+
+
+extern int wlp_wss_connect_prep(struct wlp *, struct wlp_eda_node *, void *);
+extern int wlp_wss_send_copy(struct wlp *, struct wlp_eda_node *, void *);
+
+
+/* Message handling */
+struct wlp_assoc_frame_ctx {
+        struct work_struct ws;
+        struct wlp *wlp;
+        struct sk_buff *skb;
+        struct uwb_dev_addr src;
+};
+
+extern int wlp_wss_prep_hdr(struct wlp *, struct wlp_eda_node *, void *);
+extern void wlp_handle_d1_frame(struct work_struct *);
+extern int wlp_parse_d2_frame_to_cache(struct wlp *, struct sk_buff *,
+                                       struct wlp_neighbor_e *);
+extern int wlp_parse_d2_frame_to_enroll(struct wlp_wss *, struct sk_buff *,
+                                        struct wlp_neighbor_e *,
+                                        struct wlp_uuid *);
+extern void wlp_handle_c1_frame(struct work_struct *);
+extern void wlp_handle_c3_frame(struct work_struct *);
+extern int wlp_parse_c3c4_frame(struct wlp *, struct sk_buff *,
+                                struct wlp_uuid *, u8 *,
+                                struct uwb_mac_addr *);
+extern int wlp_parse_f0(struct wlp *, struct sk_buff *);
+extern int wlp_send_assoc_frame(struct wlp *, struct wlp_wss *,
+                                struct uwb_dev_addr *, enum wlp_assoc_type);
+extern ssize_t wlp_get_version(struct wlp *, struct wlp_attr_version *,
+                               u8 *, ssize_t);
+extern ssize_t wlp_get_wssid(struct wlp *, struct wlp_attr_wssid *,
+                             struct wlp_uuid *, ssize_t);
+extern int __wlp_alloc_device_info(struct wlp *);
+extern int __wlp_setup_device_info(struct wlp *);
+
+extern struct wlp_wss_attribute wss_attribute_properties;
+extern struct wlp_wss_attribute wss_attribute_members;
+extern struct wlp_wss_attribute wss_attribute_state;
+
+static inline
+size_t wlp_wss_uuid_print(char *buf, size_t bufsize, struct wlp_uuid *uuid)
+{
+        size_t result;
+
+        result = scnprintf(buf, bufsize,
+                          "%02x:%02x:%02x:%02x:%02x:%02x:"
+                          "%02x:%02x:%02x:%02x:%02x:%02x:"
+                          "%02x:%02x:%02x:%02x",
+                          uuid->data[0], uuid->data[1],
+                          uuid->data[2], uuid->data[3],
+                          uuid->data[4], uuid->data[5],
+                          uuid->data[6], uuid->data[7],
+                          uuid->data[8], uuid->data[9],
+                          uuid->data[10], uuid->data[11],
+                          uuid->data[12], uuid->data[13],
+                          uuid->data[14], uuid->data[15]);
+        return result;
+}
+
+/**
+ * FIXME: How should a nonce be displayed?
+ */
+static inline
+size_t wlp_wss_nonce_print(char *buf, size_t bufsize, struct wlp_nonce *nonce)
+{
+        size_t result;
+
+        result = scnprintf(buf, bufsize,
+                          "%02x %02x %02x %02x %02x %02x "
+                          "%02x %02x %02x %02x %02x %02x "
+                          "%02x %02x %02x %02x",
+                          nonce->data[0], nonce->data[1],
+                          nonce->data[2], nonce->data[3],
+                          nonce->data[4], nonce->data[5],
+                          nonce->data[6], nonce->data[7],
+                          nonce->data[8], nonce->data[9],
+                          nonce->data[10], nonce->data[11],
+                          nonce->data[12], nonce->data[13],
+                          nonce->data[14], nonce->data[15]);
+        return result;
+}
+
+
+static inline
+void wlp_session_cb(struct wlp *wlp)
+{
+        struct completion *completion = wlp->session->cb_priv;
+        complete(completion);
+}
+
+static inline
+int wlp_uuid_is_set(struct wlp_uuid *uuid)
+{
+        struct wlp_uuid zero_uuid = { .data = { 0x00, 0x00, 0x00, 0x00,
+                                                0x00, 0x00, 0x00, 0x00,
+                                                0x00, 0x00, 0x00, 0x00,
+                                                0x00, 0x00, 0x00, 0x00} };
+
+        if (!memcmp(uuid, &zero_uuid, sizeof(*uuid)))
+                return 0;
+        return 1;
+}
+
+#endif /* __WLP_INTERNAL_H__ */
diff --git a/drivers/uwb/wlp/wlp-lc.c b/drivers/uwb/wlp/wlp-lc.c
new file mode 100644
index 000000000000..0799402e73fb
--- /dev/null
+++ b/drivers/uwb/wlp/wlp-lc.c
@@ -0,0 +1,585 @@
+/*
+ * WiMedia Logical Link Control Protocol (WLP)
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Reinette Chatre <reinette.chatre@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ */
+
+#include <linux/wlp.h>
+#define D_LOCAL 6
+#include <linux/uwb/debug.h>
+#include "wlp-internal.h"
+
+
+static
+void wlp_neighbor_init(struct wlp_neighbor_e *neighbor)
+{
+        INIT_LIST_HEAD(&neighbor->wssid);
+}
+
+/**
+ * Create area for device information storage
+ *
+ * wlp->mutex must be held
+ */
+int __wlp_alloc_device_info(struct wlp *wlp)
+{
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        BUG_ON(wlp->dev_info != NULL);
+        wlp->dev_info = kzalloc(sizeof(struct wlp_device_info), GFP_KERNEL);
+        if (wlp->dev_info == NULL) {
+                dev_err(dev, "WLP: Unable to allocate memory for "
+                        "device information.\n");
+                return -ENOMEM;
+        }
+        return 0;
+}
+
+
+/**
+ * Fill in device information using function provided by driver
+ *
+ * wlp->mutex must be held
+ */
+static
+void __wlp_fill_device_info(struct wlp *wlp)
+{
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+
+        BUG_ON(wlp->fill_device_info == NULL);
+        d_printf(6, dev, "Retrieving device information "
+                         "from device driver.\n");
+        wlp->fill_device_info(wlp, wlp->dev_info);
+}
+
+/**
+ * Setup device information
+ *
+ * Allocate area for device information and populate it.
+ *
+ * wlp->mutex must be held
+ */
+int __wlp_setup_device_info(struct wlp *wlp)
+{
+        int result;
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+
+        result = __wlp_alloc_device_info(wlp);
+        if (result < 0) {
+                dev_err(dev, "WLP: Unable to allocate area for "
+                        "device information.\n");
+                return result;
+        }
+        __wlp_fill_device_info(wlp);
+        return 0;
+}
+
+/**
+ * Remove information about neighbor stored temporarily
+ *
+ * Information learned during discovey should only be stored when the
+ * device enrolls in the neighbor's WSS. We do need to store this
+ * information temporarily in order to present it to the user.
+ *
+ * We are only interested in keeping neighbor WSS information if that
+ * neighbor is accepting enrollment.
+ *
+ * should be called with wlp->nbmutex held
+ */
+void wlp_remove_neighbor_tmp_info(struct wlp_neighbor_e *neighbor)
+{
+        struct wlp_wssid_e *wssid_e, *next;
+        u8 keep;
+        if (!list_empty(&neighbor->wssid)) {
+                list_for_each_entry_safe(wssid_e, next, &neighbor->wssid,
+                                         node) {
+                        if (wssid_e->info != NULL) {
+                                keep = wssid_e->info->accept_enroll;
+                                kfree(wssid_e->info);
+                                wssid_e->info = NULL;
+                                if (!keep) {
+                                        list_del(&wssid_e->node);
+                                        kfree(wssid_e);
+                                }
+                        }
+                }
+        }
+        if (neighbor->info != NULL) {
+                kfree(neighbor->info);
+                neighbor->info = NULL;
+        }
+}
+
+/**
+ * Populate WLP neighborhood cache with neighbor information
+ *
+ * A new neighbor is found. If it is discoverable then we add it to the
+ * neighborhood cache.
+ *
+ */
+static
+int wlp_add_neighbor(struct wlp *wlp, struct uwb_dev *dev)
+{
+        int result = 0;
+        int discoverable;
+        struct wlp_neighbor_e *neighbor;
+
+        d_fnstart(6, &dev->dev, "uwb %p \n", dev);
+        d_printf(6, &dev->dev, "Found neighbor device %02x:%02x \n",
+                 dev->dev_addr.data[1], dev->dev_addr.data[0]);
+        /**
+         * FIXME:
+         * Use contents of WLP IE found in beacon cache to determine if
+         * neighbor is discoverable.
+         * The device does not support WLP IE yet so this still needs to be
+         * done. Until then we assume all devices are discoverable.
+         */
+        discoverable = 1; /* will be changed when FIXME disappears */
+        if (discoverable) {
+                /* Add neighbor to cache for discovery */
+                neighbor = kzalloc(sizeof(*neighbor), GFP_KERNEL);
+                if (neighbor == NULL) {
+                        dev_err(&dev->dev, "Unable to create memory for "
+                                "new neighbor. \n");
+                        result = -ENOMEM;
+                        goto error_no_mem;
+                }
+                wlp_neighbor_init(neighbor);
+                uwb_dev_get(dev);
+                neighbor->uwb_dev = dev;
+                list_add(&neighbor->node, &wlp->neighbors);
+        }
+error_no_mem:
+        d_fnend(6, &dev->dev, "uwb %p, result = %d \n", dev, result);
+        return result;
+}
+
+/**
+ * Remove one neighbor from cache
+ */
+static
+void __wlp_neighbor_release(struct wlp_neighbor_e *neighbor)
+{
+        struct wlp_wssid_e *wssid_e, *next_wssid_e;
+
+        list_for_each_entry_safe(wssid_e, next_wssid_e,
+                                 &neighbor->wssid, node) {
+                list_del(&wssid_e->node);
+                kfree(wssid_e);
+        }
+        uwb_dev_put(neighbor->uwb_dev);
+        list_del(&neighbor->node);
+        kfree(neighbor);
+}
+
+/**
+ * Clear entire neighborhood cache.
+ */
+static
+void __wlp_neighbors_release(struct wlp *wlp)
+{
+        struct wlp_neighbor_e *neighbor, *next;
+        if (list_empty(&wlp->neighbors))
+                return;
+        list_for_each_entry_safe(neighbor, next, &wlp->neighbors, node) {
+                __wlp_neighbor_release(neighbor);
+        }
+}
+
+static
+void wlp_neighbors_release(struct wlp *wlp)
+{
+        mutex_lock(&wlp->nbmutex);
+        __wlp_neighbors_release(wlp);
+        mutex_unlock(&wlp->nbmutex);
+}
+
+
+
+/**
+ * Send D1 message to neighbor, receive D2 message
+ *
+ * @neighbor: neighbor to which D1 message will be sent
+ * @wss:      if not NULL, it is an enrollment request for this WSS
+ * @wssid:    if wss not NULL, this is the wssid of the WSS in which we
+ *            want to enroll
+ *
+ * A D1/D2 exchange is done for one of two reasons: discovery or
+ * enrollment. If done for discovery the D1 message is sent to the neighbor
+ * and the contents of the D2 response is stored in a temporary cache.
+ * If done for enrollment the @wss and @wssid are provided also. In this
+ * case the D1 message is sent to the neighbor, the D2 response is parsed
+ * for enrollment of the WSS with wssid.
+ *
+ * &wss->mutex is held
+ */
+static
+int wlp_d1d2_exchange(struct wlp *wlp, struct wlp_neighbor_e *neighbor,
+                      struct wlp_wss *wss, struct wlp_uuid *wssid)
+{
+        int result;
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        DECLARE_COMPLETION_ONSTACK(completion);
+        struct wlp_session session;
+        struct sk_buff  *skb;
+        struct wlp_frame_assoc *resp;
+        struct uwb_dev_addr *dev_addr = &neighbor->uwb_dev->dev_addr;
+
+        mutex_lock(&wlp->mutex);
+        if (!wlp_uuid_is_set(&wlp->uuid)) {
+                dev_err(dev, "WLP: UUID is not set. Set via sysfs to "
+                        "proceed.\n");
+                result = -ENXIO;
+                goto out;
+        }
+        /* Send D1 association frame */
+        result = wlp_send_assoc_frame(wlp, wss, dev_addr, WLP_ASSOC_D1);
+        if (result < 0) {
+                dev_err(dev, "Unable to send D1 frame to neighbor "
+                        "%02x:%02x (%d)\n", dev_addr->data[1],
+                        dev_addr->data[0], result);
+                d_printf(6, dev, "Add placeholders into buffer next to "
+                         "neighbor information we have (dev address).\n");
+                goto out;
+        }
+        /* Create session, wait for response */
+        session.exp_message = WLP_ASSOC_D2;
+        session.cb = wlp_session_cb;
+        session.cb_priv = &completion;
+        session.neighbor_addr = *dev_addr;
+        BUG_ON(wlp->session != NULL);
+        wlp->session = &session;
+        /* Wait for D2/F0 frame */
+        result = wait_for_completion_interruptible_timeout(&completion,
+                                                   WLP_PER_MSG_TIMEOUT * HZ);
+        if (result == 0) {
+                result = -ETIMEDOUT;
+                dev_err(dev, "Timeout while sending D1 to neighbor "
+                             "%02x:%02x.\n", dev_addr->data[1],
+                             dev_addr->data[0]);
+                goto error_session;
+        }
+        if (result < 0) {
+                dev_err(dev, "Unable to discover/enroll neighbor %02x:%02x.\n",
+                        dev_addr->data[1], dev_addr->data[0]);
+                goto error_session;
+        }
+        /* Parse message in session->data: it will be either D2 or F0 */
+        skb = session.data;
+        resp = (void *) skb->data;
+        d_printf(6, dev, "Received response to D1 frame. \n");
+        d_dump(6, dev, skb->data, skb->len > 72 ? 72 : skb->len);
+
+        if (resp->type == WLP_ASSOC_F0) {
+                result = wlp_parse_f0(wlp, skb);
+                if (result < 0)
+                        dev_err(dev, "WLP: Unable to parse F0 from neighbor "
+                                "%02x:%02x.\n", dev_addr->data[1],
+                                dev_addr->data[0]);
+                result = -EINVAL;
+                goto error_resp_parse;
+        }
+        if (wss == NULL) {
+                /* Discovery */
+                result = wlp_parse_d2_frame_to_cache(wlp, skb, neighbor);
+                if (result < 0) {
+                        dev_err(dev, "WLP: Unable to parse D2 message from "
+                                "neighbor %02x:%02x for discovery.\n",
+                                dev_addr->data[1], dev_addr->data[0]);
+                        goto error_resp_parse;
+                }
+        } else {
+                /* Enrollment */
+                result = wlp_parse_d2_frame_to_enroll(wss, skb, neighbor,
+                                                      wssid);
+                if (result < 0) {
+                        dev_err(dev, "WLP: Unable to parse D2 message from "
+                                "neighbor %02x:%02x for enrollment.\n",
+                                dev_addr->data[1], dev_addr->data[0]);
+                        goto error_resp_parse;
+                }
+        }
+error_resp_parse:
+        kfree_skb(skb);
+error_session:
+        wlp->session = NULL;
+out:
+        mutex_unlock(&wlp->mutex);
+        return result;
+}
+
+/**
+ * Enroll into WSS of provided WSSID by using neighbor as registrar
+ *
+ * &wss->mutex is held
+ */
+int wlp_enroll_neighbor(struct wlp *wlp, struct wlp_neighbor_e *neighbor,
+                        struct wlp_wss *wss, struct wlp_uuid *wssid)
+{
+        int result = 0;
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        char buf[WLP_WSS_UUID_STRSIZE];
+        struct uwb_dev_addr *dev_addr = &neighbor->uwb_dev->dev_addr;
+        wlp_wss_uuid_print(buf, sizeof(buf), wssid);
+        d_fnstart(6, dev, "wlp %p, neighbor %p, wss %p, wssid %p (%s)\n",
+                  wlp, neighbor, wss, wssid, buf);
+        d_printf(6, dev, "Complete me.\n");
+        result =  wlp_d1d2_exchange(wlp, neighbor, wss, wssid);
+        if (result < 0) {
+                dev_err(dev, "WLP: D1/D2 message exchange for enrollment "
+                        "failed. result = %d \n", result);
+                goto out;
+        }
+        if (wss->state != WLP_WSS_STATE_PART_ENROLLED) {
+                dev_err(dev, "WLP: Unable to enroll into WSS %s using "
+                        "neighbor %02x:%02x. \n", buf,
+                        dev_addr->data[1], dev_addr->data[0]);
+                result = -EINVAL;
+                goto out;
+        }
+        if (wss->secure_status == WLP_WSS_SECURE) {
+                dev_err(dev, "FIXME: need to complete secure enrollment.\n");
+                result = -EINVAL;
+                goto error;
+        } else {
+                wss->state = WLP_WSS_STATE_ENROLLED;
+                d_printf(2, dev, "WLP: Success Enrollment into unsecure WSS "
+                         "%s using neighbor %02x:%02x. \n", buf,
+                         dev_addr->data[1], dev_addr->data[0]);
+        }
+
+        d_fnend(6, dev, "wlp %p, neighbor %p, wss %p, wssid %p (%s)\n",
+                  wlp, neighbor, wss, wssid, buf);
+out:
+        return result;
+error:
+        wlp_wss_reset(wss);
+        return result;
+}
+
+/**
+ * Discover WSS information of neighbor's active WSS
+ */
+static
+int wlp_discover_neighbor(struct wlp *wlp,
+                          struct wlp_neighbor_e *neighbor)
+{
+        return wlp_d1d2_exchange(wlp, neighbor, NULL, NULL);
+}
+
+
+/**
+ * Each neighbor in the neighborhood cache is discoverable. Discover it.
+ *
+ * Discovery is done through sending of D1 association frame and parsing
+ * the D2 association frame response. Only wssid from D2 will be included
+ * in neighbor cache, rest is just displayed to user and forgotten.
+ *
+ * The discovery is not done in parallel. This is simple and enables us to
+ * maintain only one association context.
+ *
+ * The discovery of one neighbor does not affect the other, but if the
+ * discovery of a neighbor fails it is removed from the neighborhood cache.
+ */
+static
+int wlp_discover_all_neighbors(struct wlp *wlp)
+{
+        int result = 0;
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        struct wlp_neighbor_e *neighbor, *next;
+
+        list_for_each_entry_safe(neighbor, next, &wlp->neighbors, node) {
+                result = wlp_discover_neighbor(wlp, neighbor);
+                if (result < 0) {
+                        dev_err(dev, "WLP: Unable to discover neighbor "
+                                "%02x:%02x, removing from neighborhood. \n",
+                                neighbor->uwb_dev->dev_addr.data[1],
+                                neighbor->uwb_dev->dev_addr.data[0]);
+                        __wlp_neighbor_release(neighbor);
+                }
+        }
+        return result;
+}
+
+static int wlp_add_neighbor_helper(struct device *dev, void *priv)
+{
+        struct wlp *wlp = priv;
+        struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+
+        return wlp_add_neighbor(wlp, uwb_dev);
+}
+
+/**
+ * Discover WLP neighborhood
+ *
+ * Will send D1 association frame to all devices in beacon group that have
+ * discoverable bit set in WLP IE. D2 frames will be received, information
+ * displayed to user in @buf. Partial information (from D2 association
+ * frame) will be cached to assist with future association
+ * requests.
+ *
+ * The discovery of the WLP neighborhood is triggered by the user. This
+ * should occur infrequently and we thus free current cache and re-allocate
+ * memory if needed.
+ *
+ * If one neighbor fails during initial discovery (determining if it is a
+ * neighbor or not), we fail all - note that interaction with neighbor has
+ * not occured at this point so if a failure occurs we know something went wrong
+ * locally. We thus undo everything.
+ */
+ssize_t wlp_discover(struct wlp *wlp)
+{
+        int result = 0;
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+
+        d_fnstart(6, dev, "wlp %p \n", wlp);
+        mutex_lock(&wlp->nbmutex);
+        /* Clear current neighborhood cache. */
+        __wlp_neighbors_release(wlp);
+        /* Determine which devices in neighborhood. Repopulate cache. */
+        result = uwb_dev_for_each(wlp->rc, wlp_add_neighbor_helper, wlp);
+        if (result < 0) {
+                /* May have partial neighbor information, release all. */
+                __wlp_neighbors_release(wlp);
+                goto error_dev_for_each;
+        }
+        /* Discover the properties of devices in neighborhood. */
+        result = wlp_discover_all_neighbors(wlp);
+        /* In case of failure we still print our partial results. */
+        if (result < 0) {
+                dev_err(dev, "Unable to fully discover neighborhood. \n");
+                result = 0;
+        }
+error_dev_for_each:
+        mutex_unlock(&wlp->nbmutex);
+        d_fnend(6, dev, "wlp %p \n", wlp);
+        return result;
+}
+
+/**
+ * Handle events from UWB stack
+ *
+ * We handle events conservatively. If a neighbor goes off the air we
+ * remove it from the neighborhood. If an association process is in
+ * progress this function will block waiting for the nbmutex to become
+ * free. The association process will thus be allowed to complete before it
+ * is removed.
+ */
+static
+void wlp_uwb_notifs_cb(void *_wlp, struct uwb_dev *uwb_dev,
+                       enum uwb_notifs event)
+{
+        struct wlp *wlp = _wlp;
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        struct wlp_neighbor_e *neighbor, *next;
+        int result;
+        switch (event) {
+        case UWB_NOTIF_ONAIR:
+                d_printf(6, dev, "UWB device %02x:%02x is onair\n",
+                                uwb_dev->dev_addr.data[1],
+                                uwb_dev->dev_addr.data[0]);
+                result = wlp_eda_create_node(&wlp->eda,
+                                             uwb_dev->mac_addr.data,
+                                             &uwb_dev->dev_addr);
+                if (result < 0)
+                        dev_err(dev, "WLP: Unable to add new neighbor "
+                                "%02x:%02x to EDA cache.\n",
+                                uwb_dev->dev_addr.data[1],
+                                uwb_dev->dev_addr.data[0]);
+                break;
+        case UWB_NOTIF_OFFAIR:
+                d_printf(6, dev, "UWB device %02x:%02x is offair\n",
+                                uwb_dev->dev_addr.data[1],
+                                uwb_dev->dev_addr.data[0]);
+                wlp_eda_rm_node(&wlp->eda, &uwb_dev->dev_addr);
+                mutex_lock(&wlp->nbmutex);
+                list_for_each_entry_safe(neighbor, next, &wlp->neighbors,
+                                         node) {
+                        if (neighbor->uwb_dev == uwb_dev) {
+                                d_printf(6, dev, "Removing device from "
+                                         "neighborhood.\n");
+                                __wlp_neighbor_release(neighbor);
+                        }
+                }
+                mutex_unlock(&wlp->nbmutex);
+                break;
+        default:
+                dev_err(dev, "don't know how to handle event %d from uwb\n",
+                                event);
+        }
+}
+
+int wlp_setup(struct wlp *wlp, struct uwb_rc *rc)
+{
+        struct device *dev = &rc->uwb_dev.dev;
+        int result;
+
+        d_fnstart(6, dev, "wlp %p\n", wlp);
+        BUG_ON(wlp->fill_device_info == NULL);
+        BUG_ON(wlp->xmit_frame == NULL);
+        BUG_ON(wlp->stop_queue == NULL);
+        BUG_ON(wlp->start_queue == NULL);
+        wlp->rc = rc;
+        wlp_eda_init(&wlp->eda);/* Set up address cache */
+        wlp->uwb_notifs_handler.cb = wlp_uwb_notifs_cb;
+        wlp->uwb_notifs_handler.data = wlp;
+        uwb_notifs_register(rc, &wlp->uwb_notifs_handler);
+
+        uwb_pal_init(&wlp->pal);
+        result = uwb_pal_register(rc, &wlp->pal);
+        if (result < 0)
+                uwb_notifs_deregister(wlp->rc, &wlp->uwb_notifs_handler);
+
+        d_fnend(6, dev, "wlp %p, result = %d\n", wlp, result);
+        return result;
+}
+EXPORT_SYMBOL_GPL(wlp_setup);
+
+void wlp_remove(struct wlp *wlp)
+{
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        d_fnstart(6, dev, "wlp %p\n", wlp);
+        wlp_neighbors_release(wlp);
+        uwb_pal_unregister(wlp->rc, &wlp->pal);
+        uwb_notifs_deregister(wlp->rc, &wlp->uwb_notifs_handler);
+        wlp_eda_release(&wlp->eda);
+        mutex_lock(&wlp->mutex);
+        if (wlp->dev_info != NULL)
+                kfree(wlp->dev_info);
+        mutex_unlock(&wlp->mutex);
+        wlp->rc = NULL;
+        /* We have to use NULL here because this function can be called
+         * when the device disappeared. */
+        d_fnend(6, NULL, "wlp %p\n", wlp);
+}
+EXPORT_SYMBOL_GPL(wlp_remove);
+
+/**
+ * wlp_reset_all - reset the WLP hardware
+ * @wlp: the WLP device to reset.
+ *
+ * This schedules a full hardware reset of the WLP device.  The radio
+ * controller and any other PALs will also be reset.
+ */
+void wlp_reset_all(struct wlp *wlp)
+{
+        uwb_rc_reset_all(wlp->rc);
+}
+EXPORT_SYMBOL_GPL(wlp_reset_all);
diff --git a/drivers/uwb/wlp/wss-lc.c b/drivers/uwb/wlp/wss-lc.c
new file mode 100644
index 000000000000..96b18c9bd6e9
--- /dev/null
+++ b/drivers/uwb/wlp/wss-lc.c
@@ -0,0 +1,1055 @@
+/*
+ * WiMedia Logical Link Control Protocol (WLP)
+ *
+ * Copyright (C) 2007 Intel Corporation
+ * Reinette Chatre <reinette.chatre@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * Implementation of the WLP association protocol.
+ *
+ * FIXME: Docs
+ *
+ * A UWB network interface will configure a WSS through wlp_wss_setup() after
+ * the interface has been assigned a MAC address, typically after
+ * "ifconfig" has been called. When the interface goes down it should call
+ * wlp_wss_remove().
+ *
+ * When the WSS is ready for use the user interacts via sysfs to create,
+ * discover, and activate WSS.
+ *
+ * wlp_wss_enroll_activate()
+ *
+ * wlp_wss_create_activate()
+ *      wlp_wss_set_wssid_hash()
+ *              wlp_wss_comp_wssid_hash()
+ *      wlp_wss_sel_bcast_addr()
+ *      wlp_wss_sysfs_add()
+ *
+ * Called when no more references to WSS exist:
+ *      wlp_wss_release()
+ *              wlp_wss_reset()
+ */
+
+#include <linux/etherdevice.h> /* for is_valid_ether_addr */
+#include <linux/skbuff.h>
+#include <linux/wlp.h>
+#define D_LOCAL 5
+#include <linux/uwb/debug.h>
+#include "wlp-internal.h"
+
+
+size_t wlp_wss_key_print(char *buf, size_t bufsize, u8 *key)
+{
+        size_t result;
+
+        result = scnprintf(buf, bufsize,
+                          "%02x %02x %02x %02x %02x %02x "
+                          "%02x %02x %02x %02x %02x %02x "
+                          "%02x %02x %02x %02x",
+                          key[0], key[1], key[2], key[3],
+                          key[4], key[5], key[6], key[7],
+                          key[8], key[9], key[10], key[11],
+                          key[12], key[13], key[14], key[15]);
+        return result;
+}
+
+/**
+ * Compute WSSID hash
+ * WLP Draft 0.99 [7.2.1]
+ *
+ * The WSSID hash for a WSSID is the result of an octet-wise exclusive-OR
+ * of all octets in the WSSID.
+ */
+static
+u8 wlp_wss_comp_wssid_hash(struct wlp_uuid *wssid)
+{
+        return wssid->data[0]  ^ wssid->data[1]  ^ wssid->data[2]
+               ^ wssid->data[3]  ^ wssid->data[4]  ^ wssid->data[5]
+               ^ wssid->data[6]  ^ wssid->data[7]  ^ wssid->data[8]
+               ^ wssid->data[9]  ^ wssid->data[10] ^ wssid->data[11]
+               ^ wssid->data[12] ^ wssid->data[13] ^ wssid->data[14]
+               ^ wssid->data[15];
+}
+
+/**
+ * Select a multicast EUI-48 for the WSS broadcast address.
+ * WLP Draft 0.99 [7.2.1]
+ *
+ * Selected based on the WiMedia Alliance OUI, 00-13-88, within the WLP
+ * range, [01-13-88-00-01-00, 01-13-88-00-01-FF] inclusive.
+ *
+ * This address is currently hardcoded.
+ * FIXME?
+ */
+static
+struct uwb_mac_addr wlp_wss_sel_bcast_addr(struct wlp_wss *wss)
+{
+        struct uwb_mac_addr bcast = {
+                .data = { 0x01, 0x13, 0x88, 0x00, 0x01, 0x00 }
+        };
+        return bcast;
+}
+
+/**
+ * Clear the contents of the WSS structure - all except kobj, mutex, virtual
+ *
+ * We do not want to reinitialize - the internal kobj should not change as
+ * it still points to the parent received during setup. The mutex should
+ * remain also. We thus just reset values individually.
+ * The virutal address assigned to WSS will remain the same for the
+ * lifetime of the WSS. We only reset the fields that can change during its
+ * lifetime.
+ */
+void wlp_wss_reset(struct wlp_wss *wss)
+{
+        struct wlp *wlp = container_of(wss, struct wlp, wss);
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        d_fnstart(5, dev, "wss (%p) \n", wss);
+        memset(&wss->wssid, 0, sizeof(wss->wssid));
+        wss->hash = 0;
+        memset(&wss->name[0], 0, sizeof(wss->name));
+        memset(&wss->bcast, 0, sizeof(wss->bcast));
+        wss->secure_status = WLP_WSS_UNSECURE;
+        memset(&wss->master_key[0], 0, sizeof(wss->master_key));
+        wss->tag = 0;
+        wss->state = WLP_WSS_STATE_NONE;
+        d_fnend(5, dev, "wss (%p) \n", wss);
+}
+
+/**
+ * Create sysfs infrastructure for WSS
+ *
+ * The WSS is configured to have the interface as parent (see wlp_wss_setup())
+ * a new sysfs directory that includes wssid as its name is created in the
+ * interface's sysfs directory. The group of files interacting with WSS are
+ * created also.
+ */
+static
+int wlp_wss_sysfs_add(struct wlp_wss *wss, char *wssid_str)
+{
+        struct wlp *wlp = container_of(wss, struct wlp, wss);
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        int result;
+
+        d_fnstart(5, dev, "wss (%p), wssid: %s\n", wss, wssid_str);
+        result = kobject_set_name(&wss->kobj, "wss-%s", wssid_str);
+        if (result < 0)
+                return result;
+        wss->kobj.ktype = &wss_ktype;
+        result = kobject_init_and_add(&wss->kobj,
+                        &wss_ktype, wss->kobj.parent, "wlp");
+        if (result < 0) {
+                dev_err(dev, "WLP: Cannot register WSS kobject.\n");
+                goto error_kobject_register;
+        }
+        result = sysfs_create_group(&wss->kobj, &wss_attr_group);
+        if (result < 0) {
+                dev_err(dev, "WLP: Cannot register WSS attributes: %d\n",
+                        result);
+                goto error_sysfs_create_group;
+        }
+        d_fnend(5, dev, "Completed. result = %d \n", result);
+        return 0;
+error_sysfs_create_group:
+
+        kobject_put(&wss->kobj); /* will free name if needed */
+        return result;
+error_kobject_register:
+        kfree(wss->kobj.name);
+        wss->kobj.name = NULL;
+        wss->kobj.ktype = NULL;
+        return result;
+}
+
+
+/**
+ * Release WSS
+ *
+ * No more references exist to this WSS. We should undo everything that was
+ * done in wlp_wss_create_activate() except removing the group. The group
+ * is not removed because an object can be unregistered before the group is
+ * created. We also undo any additional operations on the WSS after this
+ * (addition of members).
+ *
+ * If memory was allocated for the kobject's name then it will
+ * be freed by the kobject system during this time.
+ *
+ * The EDA cache is removed and reinitilized when the WSS is removed. We
+ * thus loose knowledge of members of this WSS at that time and need not do
+ * it here.
+ */
+void wlp_wss_release(struct kobject *kobj)
+{
+        struct wlp_wss *wss = container_of(kobj, struct wlp_wss, kobj);
+
+        wlp_wss_reset(wss);
+}
+
+/**
+ * Enroll into a WSS using provided neighbor as registrar
+ *
+ * First search the neighborhood information to learn which neighbor is
+ * referred to, next proceed with enrollment.
+ *
+ * &wss->mutex is held
+ */
+static
+int wlp_wss_enroll_target(struct wlp_wss *wss, struct wlp_uuid *wssid,
+                          struct uwb_dev_addr *dest)
+{
+        struct wlp *wlp = container_of(wss, struct wlp, wss);
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        struct wlp_neighbor_e *neighbor;
+        char buf[WLP_WSS_UUID_STRSIZE];
+        int result = -ENXIO;
+        struct uwb_dev_addr *dev_addr;
+
+        wlp_wss_uuid_print(buf, sizeof(buf), wssid);
+        d_fnstart(5, dev, "wss %p, wssid %s, registrar %02x:%02x \n",
+                  wss, buf, dest->data[1], dest->data[0]);
+        mutex_lock(&wlp->nbmutex);
+        list_for_each_entry(neighbor, &wlp->neighbors, node) {
+                dev_addr = &neighbor->uwb_dev->dev_addr;
+                if (!memcmp(dest, dev_addr, sizeof(*dest))) {
+                        d_printf(5, dev, "Neighbor %02x:%02x is valid, "
+                                 "enrolling. \n",
+                                 dev_addr->data[1], dev_addr->data[0]);
+                        result = wlp_enroll_neighbor(wlp, neighbor, wss,
+                                                     wssid);
+                        break;
+                }
+        }
+        if (result == -ENXIO)
+                dev_err(dev, "WLP: Cannot find neighbor %02x:%02x. \n",
+                        dest->data[1], dest->data[0]);
+        mutex_unlock(&wlp->nbmutex);
+        d_fnend(5, dev, "wss %p, wssid %s, registrar %02x:%02x, result %d \n",
+                  wss, buf, dest->data[1], dest->data[0], result);
+        return result;
+}
+
+/**
+ * Enroll into a WSS previously discovered
+ *
+ * User provides WSSID of WSS, search for neighbor that has this WSS
+ * activated and attempt to enroll.
+ *
+ * &wss->mutex is held
+ */
+static
+int wlp_wss_enroll_discovered(struct wlp_wss *wss, struct wlp_uuid *wssid)
+{
+        struct wlp *wlp = container_of(wss, struct wlp, wss);
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        struct wlp_neighbor_e *neighbor;
+        struct wlp_wssid_e *wssid_e;
+        char buf[WLP_WSS_UUID_STRSIZE];
+        int result = -ENXIO;
+
+        wlp_wss_uuid_print(buf, sizeof(buf), wssid);
+        d_fnstart(5, dev, "wss %p, wssid %s \n", wss, buf);
+        mutex_lock(&wlp->nbmutex);
+        list_for_each_entry(neighbor, &wlp->neighbors, node) {
+                list_for_each_entry(wssid_e, &neighbor->wssid, node) {
+                        if (!memcmp(wssid, &wssid_e->wssid, sizeof(*wssid))) {
+                                d_printf(5, dev, "Found WSSID %s in neighbor "
+                                         "%02x:%02x cache. \n", buf,
+                                         neighbor->uwb_dev->dev_addr.data[1],
+                                         neighbor->uwb_dev->dev_addr.data[0]);
+                                result = wlp_enroll_neighbor(wlp, neighbor,
+                                                             wss, wssid);
+                                if (result == 0) /* enrollment success */
+                                        goto out;
+                                break;
+                        }
+                }
+        }
+out:
+        if (result == -ENXIO)
+                dev_err(dev, "WLP: Cannot find WSSID %s in cache. \n", buf);
+        mutex_unlock(&wlp->nbmutex);
+        d_fnend(5, dev, "wss %p, wssid %s, result %d \n", wss, buf, result);
+        return result;
+}
+
+/**
+ * Enroll into WSS with provided WSSID, registrar may be provided
+ *
+ * @wss: out WSS that will be enrolled
+ * @wssid: wssid of neighboring WSS that we want to enroll in
+ * @devaddr: registrar can be specified, will be broadcast (ff:ff) if any
+ *           neighbor can be used as registrar.
+ *
+ * &wss->mutex is held
+ */
+static
+int wlp_wss_enroll(struct wlp_wss *wss, struct wlp_uuid *wssid,
+                   struct uwb_dev_addr *devaddr)
+{
+        int result;
+        struct wlp *wlp = container_of(wss, struct wlp, wss);
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        char buf[WLP_WSS_UUID_STRSIZE];
+        struct uwb_dev_addr bcast = {.data = {0xff, 0xff} };
+
+        wlp_wss_uuid_print(buf, sizeof(buf), wssid);
+        if (wss->state != WLP_WSS_STATE_NONE) {
+                dev_err(dev, "WLP: Already enrolled in WSS %s.\n", buf);
+                result = -EEXIST;
+                goto error;
+        }
+        if (!memcmp(&bcast, devaddr, sizeof(bcast))) {
+                d_printf(5, dev, "Request to enroll in discovered WSS "
+                         "with WSSID %s \n", buf);
+                result = wlp_wss_enroll_discovered(wss, wssid);
+        } else {
+                d_printf(5, dev, "Request to enroll in WSSID %s with "
+                         "registrar %02x:%02x\n", buf, devaddr->data[1],
+                         devaddr->data[0]);
+                result = wlp_wss_enroll_target(wss, wssid, devaddr);
+        }
+        if (result < 0) {
+                dev_err(dev, "WLP: Unable to enroll into WSS %s, result %d \n",
+                        buf, result);
+                goto error;
+        }
+        d_printf(2, dev, "Successfully enrolled into WSS %s \n", buf);
+        result = wlp_wss_sysfs_add(wss, buf);
+        if (result < 0) {
+                dev_err(dev, "WLP: Unable to set up sysfs for WSS kobject.\n");
+                wlp_wss_reset(wss);
+        }
+error:
+        return result;
+
+}
+
+/**
+ * Activate given WSS
+ *
+ * Prior to activation a WSS must be enrolled. To activate a WSS a device
+ * includes the WSS hash in the WLP IE in its beacon in each superframe.
+ * WLP 0.99 [7.2.5].
+ *
+ * The WSS tag is also computed at this time. We only support one activated
+ * WSS so we can use the hash as a tag - there will never be a conflict.
+ *
+ * We currently only support one activated WSS so only one WSS hash is
+ * included in the WLP IE.
+ */
+static
+int wlp_wss_activate(struct wlp_wss *wss)
+{
+        struct wlp *wlp = container_of(wss, struct wlp, wss);
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        struct uwb_rc *uwb_rc = wlp->rc;
+        int result;
+        struct {
+                struct wlp_ie wlp_ie;
+                u8 hash; /* only include one hash */
+        } ie_data;
+
+        d_fnstart(5, dev, "Activating WSS %p. \n", wss);
+        BUG_ON(wss->state != WLP_WSS_STATE_ENROLLED);
+        wss->hash = wlp_wss_comp_wssid_hash(&wss->wssid);
+        wss->tag = wss->hash;
+        memset(&ie_data, 0, sizeof(ie_data));
+        ie_data.wlp_ie.hdr.element_id = UWB_IE_WLP;
+        ie_data.wlp_ie.hdr.length = sizeof(ie_data) - sizeof(struct uwb_ie_hdr);
+        wlp_ie_set_hash_length(&ie_data.wlp_ie, sizeof(ie_data.hash));
+        ie_data.hash = wss->hash;
+        result = uwb_rc_ie_add(uwb_rc, &ie_data.wlp_ie.hdr,
+                               sizeof(ie_data));
+        if (result < 0) {
+                dev_err(dev, "WLP: Unable to add WLP IE to beacon. "
+                        "result = %d.\n", result);
+                goto error_wlp_ie;
+        }
+        wss->state = WLP_WSS_STATE_ACTIVE;
+        result = 0;
+error_wlp_ie:
+        d_fnend(5, dev, "Activating WSS %p, result = %d \n", wss, result);
+        return result;
+}
+
+/**
+ * Enroll in and activate WSS identified by provided WSSID
+ *
+ * The neighborhood cache should contain a list of all neighbors and the
+ * WSS they have activated. Based on that cache we search which neighbor we
+ * can perform the association process with. The user also has option to
+ * specify which neighbor it prefers as registrar.
+ * Successful enrollment is followed by activation.
+ * Successful activation will create the sysfs directory containing
+ * specific information regarding this WSS.
+ */
+int wlp_wss_enroll_activate(struct wlp_wss *wss, struct wlp_uuid *wssid,
+                            struct uwb_dev_addr *devaddr)
+{
+        struct wlp *wlp = container_of(wss, struct wlp, wss);
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        int result = 0;
+        char buf[WLP_WSS_UUID_STRSIZE];
+
+        d_fnstart(5, dev, "Enrollment and activation requested. \n");
+        mutex_lock(&wss->mutex);
+        result = wlp_wss_enroll(wss, wssid, devaddr);
+        if (result < 0) {
+                wlp_wss_uuid_print(buf, sizeof(buf), &wss->wssid);
+                dev_err(dev, "WLP: Enrollment into WSS %s failed.\n", buf);
+                goto error_enroll;
+        }
+        result = wlp_wss_activate(wss);
+        if (result < 0) {
+                dev_err(dev, "WLP: Unable to activate WSS. Undoing enrollment "
+                        "result = %d \n", result);
+                /* Undo enrollment */
+                wlp_wss_reset(wss);
+                goto error_activate;
+        }
+error_activate:
+error_enroll:
+        mutex_unlock(&wss->mutex);
+        d_fnend(5, dev, "Completed. result = %d \n", result);
+        return result;
+}
+
+/**
+ * Create, enroll, and activate a new WSS
+ *
+ * @wssid: new wssid provided by user
+ * @name:  WSS name requested by used.
+ * @sec_status: security status requested by user
+ *
+ * A user requested the creation of a new WSS. All operations are done
+ * locally. The new WSS will be stored locally, the hash will be included
+ * in the WLP IE, and the sysfs infrastructure for this WSS will be
+ * created.
+ */
+int wlp_wss_create_activate(struct wlp_wss *wss, struct wlp_uuid *wssid,
+                            char *name, unsigned sec_status, unsigned accept)
+{
+        struct wlp *wlp = container_of(wss, struct wlp, wss);
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        int result = 0;
+        char buf[WLP_WSS_UUID_STRSIZE];
+        d_fnstart(5, dev, "Request to create new WSS.\n");
+        result = wlp_wss_uuid_print(buf, sizeof(buf), wssid);
+        d_printf(5, dev, "Request to create WSS: WSSID=%s, name=%s, "
+                 "sec_status=%u, accepting enrollment=%u \n",
+                 buf, name, sec_status, accept);
+        if (!mutex_trylock(&wss->mutex)) {
+                dev_err(dev, "WLP: WLP association session in progress.\n");
+                return -EBUSY;
+        }
+        if (wss->state != WLP_WSS_STATE_NONE) {
+                dev_err(dev, "WLP: WSS already exists. Not creating new.\n");
+                result = -EEXIST;
+                goto out;
+        }
+        if (wss->kobj.parent == NULL) {
+                dev_err(dev, "WLP: WSS parent not ready. Is network interface "
+                       "up?\n");
+                result = -ENXIO;
+                goto out;
+        }
+        if (sec_status == WLP_WSS_SECURE) {
+                dev_err(dev, "WLP: FIXME Creation of secure WSS not "
+                        "supported yet.\n");
+                result = -EINVAL;
+                goto out;
+        }
+        wss->wssid = *wssid;
+        memcpy(wss->name, name, sizeof(wss->name));
+        wss->bcast = wlp_wss_sel_bcast_addr(wss);
+        wss->secure_status = sec_status;
+        wss->accept_enroll = accept;
+        /*wss->virtual_addr is initialized in call to wlp_wss_setup*/
+        /* sysfs infrastructure */
+        result = wlp_wss_sysfs_add(wss, buf);
+        if (result < 0) {
+                dev_err(dev, "Cannot set up sysfs for WSS kobject.\n");
+                wlp_wss_reset(wss);
+                goto out;
+        } else
+                result = 0;
+        wss->state = WLP_WSS_STATE_ENROLLED;
+        result = wlp_wss_activate(wss);
+        if (result < 0) {
+                dev_err(dev, "WLP: Unable to activate WSS. Undoing "
+                        "enrollment\n");
+                wlp_wss_reset(wss);
+                goto out;
+        }
+        result = 0;
+out:
+        mutex_unlock(&wss->mutex);
+        d_fnend(5, dev, "Completed. result = %d \n", result);
+        return result;
+}
+
+/**
+ * Determine if neighbor has WSS activated
+ *
+ * @returns: 1 if neighbor has WSS activated, zero otherwise
+ *
+ * This can be done in two ways:
+ * - send a C1 frame, parse C2/F0 response
+ * - examine the WLP IE sent by the neighbor
+ *
+ * The WLP IE is not fully supported in hardware so we use the C1/C2 frame
+ * exchange to determine if a WSS is activated. Using the WLP IE should be
+ * faster and should be used when it becomes possible.
+ */
+int wlp_wss_is_active(struct wlp *wlp, struct wlp_wss *wss,
+                      struct uwb_dev_addr *dev_addr)
+{
+        int result = 0;
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        char buf[WLP_WSS_UUID_STRSIZE];
+        DECLARE_COMPLETION_ONSTACK(completion);
+        struct wlp_session session;
+        struct sk_buff  *skb;
+        struct wlp_frame_assoc *resp;
+        struct wlp_uuid wssid;
+
+        wlp_wss_uuid_print(buf, sizeof(buf), &wss->wssid);
+        d_fnstart(5, dev, "wlp %p, wss %p (wssid %s), neighbor %02x:%02x \n",
+                  wlp, wss, buf, dev_addr->data[1], dev_addr->data[0]);
+        mutex_lock(&wlp->mutex);
+        /* Send C1 association frame */
+        result = wlp_send_assoc_frame(wlp, wss, dev_addr, WLP_ASSOC_C1);
+        if (result < 0) {
+                dev_err(dev, "Unable to send C1 frame to neighbor "
+                        "%02x:%02x (%d)\n", dev_addr->data[1],
+                        dev_addr->data[0], result);
+                result = 0;
+                goto out;
+        }
+        /* Create session, wait for response */
+        session.exp_message = WLP_ASSOC_C2;
+        session.cb = wlp_session_cb;
+        session.cb_priv = &completion;
+        session.neighbor_addr = *dev_addr;
+        BUG_ON(wlp->session != NULL);
+        wlp->session = &session;
+        /* Wait for C2/F0 frame */
+        result = wait_for_completion_interruptible_timeout(&completion,
+                                                   WLP_PER_MSG_TIMEOUT * HZ);
+        if (result == 0) {
+                dev_err(dev, "Timeout while sending C1 to neighbor "
+                             "%02x:%02x.\n", dev_addr->data[1],
+                             dev_addr->data[0]);
+                goto out;
+        }
+        if (result < 0) {
+                dev_err(dev, "Unable to send C1 to neighbor %02x:%02x.\n",
+                        dev_addr->data[1], dev_addr->data[0]);
+                result = 0;
+                goto out;
+        }
+        /* Parse message in session->data: it will be either C2 or F0 */
+        skb = session.data;
+        resp = (void *) skb->data;
+        d_printf(5, dev, "Received response to C1 frame. \n");
+        d_dump(5, dev, skb->data, skb->len > 72 ? 72 : skb->len);
+        if (resp->type == WLP_ASSOC_F0) {
+                result = wlp_parse_f0(wlp, skb);
+                if (result < 0)
+                        dev_err(dev, "WLP:  unable to parse incoming F0 "
+                                "frame from neighbor %02x:%02x.\n",
+                                dev_addr->data[1], dev_addr->data[0]);
+                result = 0;
+                goto error_resp_parse;
+        }
+        /* WLP version and message type fields have already been parsed */
+        result = wlp_get_wssid(wlp, (void *)resp + sizeof(*resp), &wssid,
+                               skb->len - sizeof(*resp));
+        if (result < 0) {
+                dev_err(dev, "WLP: unable to obtain WSSID from C2 frame.\n");
+                result = 0;
+                goto error_resp_parse;
+        }
+        if (!memcmp(&wssid, &wss->wssid, sizeof(wssid))) {
+                d_printf(5, dev, "WSSID in C2 frame matches local "
+                         "active WSS.\n");
+                result = 1;
+        } else {
+                dev_err(dev, "WLP: Received a C2 frame without matching "
+                        "WSSID.\n");
+                result = 0;
+        }
+error_resp_parse:
+        kfree_skb(skb);
+out:
+        wlp->session = NULL;
+        mutex_unlock(&wlp->mutex);
+        d_fnend(5, dev, "wlp %p, wss %p (wssid %s), neighbor %02x:%02x \n",
+                  wlp, wss, buf, dev_addr->data[1], dev_addr->data[0]);
+        return result;
+}
+
+/**
+ * Activate connection with neighbor by updating EDA cache
+ *
+ * @wss:       local WSS to which neighbor wants to connect
+ * @dev_addr:  neighbor's address
+ * @wssid:     neighbor's WSSID - must be same as our WSS's WSSID
+ * @tag:       neighbor's WSS tag used to identify frames transmitted by it
+ * @virt_addr: neighbor's virtual EUI-48
+ */
+static
+int wlp_wss_activate_connection(struct wlp *wlp, struct wlp_wss *wss,
+                                struct uwb_dev_addr *dev_addr,
+                                struct wlp_uuid *wssid, u8 *tag,
+                                struct uwb_mac_addr *virt_addr)
+{
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        int result = 0;
+        char buf[WLP_WSS_UUID_STRSIZE];
+        wlp_wss_uuid_print(buf, sizeof(buf), wssid);
+        d_fnstart(5, dev, "wlp %p, wss %p, wssid %s, tag %u, virtual "
+                  "%02x:%02x:%02x:%02x:%02x:%02x \n", wlp, wss, buf, *tag,
+                  virt_addr->data[0], virt_addr->data[1], virt_addr->data[2],
+                  virt_addr->data[3], virt_addr->data[4], virt_addr->data[5]);
+
+        if (!memcmp(wssid, &wss->wssid, sizeof(*wssid))) {
+                d_printf(5, dev, "WSSID from neighbor frame matches local "
+                         "active WSS.\n");
+                /* Update EDA cache */
+                result = wlp_eda_update_node(&wlp->eda, dev_addr, wss,
+                                             (void *) virt_addr->data, *tag,
+                                             WLP_WSS_CONNECTED);
+                if (result < 0)
+                        dev_err(dev, "WLP: Unable to update EDA cache "
+                                "with new connected neighbor information.\n");
+        } else {
+                dev_err(dev, "WLP: Neighbor does not have matching "
+                        "WSSID.\n");
+                result = -EINVAL;
+        }
+
+        d_fnend(5, dev, "wlp %p, wss %p, wssid %s, tag %u, virtual "
+                  "%02x:%02x:%02x:%02x:%02x:%02x, result = %d \n",
+                  wlp, wss, buf, *tag,
+                  virt_addr->data[0], virt_addr->data[1], virt_addr->data[2],
+                  virt_addr->data[3], virt_addr->data[4], virt_addr->data[5],
+                  result);
+
+        return result;
+}
+
+/**
+ * Connect to WSS neighbor
+ *
+ * Use C3/C4 exchange to determine if neighbor has WSS activated and
+ * retrieve the WSS tag and virtual EUI-48 of the neighbor.
+ */
+static
+int wlp_wss_connect_neighbor(struct wlp *wlp, struct wlp_wss *wss,
+                             struct uwb_dev_addr *dev_addr)
+{
+        int result;
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        char buf[WLP_WSS_UUID_STRSIZE];
+        struct wlp_uuid wssid;
+        u8 tag;
+        struct uwb_mac_addr virt_addr;
+        DECLARE_COMPLETION_ONSTACK(completion);
+        struct wlp_session session;
+        struct wlp_frame_assoc *resp;
+        struct sk_buff *skb;
+
+        wlp_wss_uuid_print(buf, sizeof(buf), &wss->wssid);
+        d_fnstart(5, dev, "wlp %p, wss %p (wssid %s), neighbor %02x:%02x \n",
+                  wlp, wss, buf, dev_addr->data[1], dev_addr->data[0]);
+        mutex_lock(&wlp->mutex);
+        /* Send C3 association frame */
+        result = wlp_send_assoc_frame(wlp, wss, dev_addr, WLP_ASSOC_C3);
+        if (result < 0) {
+                dev_err(dev, "Unable to send C3 frame to neighbor "
+                        "%02x:%02x (%d)\n", dev_addr->data[1],
+                        dev_addr->data[0], result);
+                goto out;
+        }
+        /* Create session, wait for response */
+        session.exp_message = WLP_ASSOC_C4;
+        session.cb = wlp_session_cb;
+        session.cb_priv = &completion;
+        session.neighbor_addr = *dev_addr;
+        BUG_ON(wlp->session != NULL);
+        wlp->session = &session;
+        /* Wait for C4/F0 frame */
+        result = wait_for_completion_interruptible_timeout(&completion,
+                                                   WLP_PER_MSG_TIMEOUT * HZ);
+        if (result == 0) {
+                dev_err(dev, "Timeout while sending C3 to neighbor "
+                             "%02x:%02x.\n", dev_addr->data[1],
+                             dev_addr->data[0]);
+                result = -ETIMEDOUT;
+                goto out;
+        }
+        if (result < 0) {
+                dev_err(dev, "Unable to send C3 to neighbor %02x:%02x.\n",
+                        dev_addr->data[1], dev_addr->data[0]);
+                goto out;
+        }
+        /* Parse message in session->data: it will be either C4 or F0 */
+        skb = session.data;
+        resp = (void *) skb->data;
+        d_printf(5, dev, "Received response to C3 frame. \n");
+        d_dump(5, dev, skb->data, skb->len > 72 ? 72 : skb->len);
+        if (resp->type == WLP_ASSOC_F0) {
+                result = wlp_parse_f0(wlp, skb);
+                if (result < 0)
+                        dev_err(dev, "WLP: unable to parse incoming F0 "
+                                "frame from neighbor %02x:%02x.\n",
+                                dev_addr->data[1], dev_addr->data[0]);
+                result = -EINVAL;
+                goto error_resp_parse;
+        }
+        result = wlp_parse_c3c4_frame(wlp, skb, &wssid, &tag, &virt_addr);
+        if (result < 0) {
+                dev_err(dev, "WLP: Unable to parse C4 frame from neighbor.\n");
+                goto error_resp_parse;
+        }
+        result = wlp_wss_activate_connection(wlp, wss, dev_addr, &wssid, &tag,
+                                             &virt_addr);
+        if (result < 0) {
+                dev_err(dev, "WLP: Unable to activate connection to "
+                        "neighbor %02x:%02x.\n", dev_addr->data[1],
+                        dev_addr->data[0]);
+                goto error_resp_parse;
+        }
+error_resp_parse:
+        kfree_skb(skb);
+out:
+        /* Record that we unsuccessfully tried to connect to this neighbor */
+        if (result < 0)
+                wlp_eda_update_node_state(&wlp->eda, dev_addr,
+                                          WLP_WSS_CONNECT_FAILED);
+        wlp->session = NULL;
+        mutex_unlock(&wlp->mutex);
+        d_fnend(5, dev, "wlp %p, wss %p (wssid %s), neighbor %02x:%02x \n",
+                  wlp, wss, buf, dev_addr->data[1], dev_addr->data[0]);
+        return result;
+}
+
+/**
+ * Connect to neighbor with common WSS, send pending frame
+ *
+ * This function is scheduled when a frame is destined to a neighbor with
+ * which we do not have a connection. A copy of the EDA cache entry is
+ * provided - not the actual cache entry (because it is protected by a
+ * spinlock).
+ *
+ * First determine if neighbor has the same WSS activated, connect if it
+ * does. The C3/C4 exchange is dual purpose to determine if neighbor has
+ * WSS activated and proceed with the connection.
+ *
+ * The frame that triggered the connection setup is sent after connection
+ * setup.
+ *
+ * network queue is stopped - we need to restart when done
+ *
+ */
+static
+void wlp_wss_connect_send(struct work_struct *ws)
+{
+        struct wlp_assoc_conn_ctx *conn_ctx = container_of(ws,
+                                                  struct wlp_assoc_conn_ctx,
+                                                  ws);
+        struct wlp *wlp = conn_ctx->wlp;
+        struct sk_buff *skb = conn_ctx->skb;
+        struct wlp_eda_node *eda_entry = &conn_ctx->eda_entry;
+        struct uwb_dev_addr *dev_addr = &eda_entry->dev_addr;
+        struct wlp_wss *wss = &wlp->wss;
+        int result;
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        char buf[WLP_WSS_UUID_STRSIZE];
+
+        mutex_lock(&wss->mutex);
+        wlp_wss_uuid_print(buf, sizeof(buf), &wss->wssid);
+        d_fnstart(5, dev, "wlp %p, wss %p (wssid %s), neighbor %02x:%02x \n",
+                  wlp, wss, buf, dev_addr->data[1], dev_addr->data[0]);
+        if (wss->state < WLP_WSS_STATE_ACTIVE) {
+                if (printk_ratelimit())
+                        dev_err(dev, "WLP: Attempting to connect with "
+                                "WSS that is not active or connected.\n");
+                dev_kfree_skb(skb);
+                goto out;
+        }
+        /* Establish connection - send C3 rcv C4 */
+        result = wlp_wss_connect_neighbor(wlp, wss, dev_addr);
+        if (result < 0) {
+                if (printk_ratelimit())
+                        dev_err(dev, "WLP: Unable to establish connection "
+                                "with neighbor %02x:%02x.\n",
+                                dev_addr->data[1], dev_addr->data[0]);
+                dev_kfree_skb(skb);
+                goto out;
+        }
+        /* EDA entry changed, update the local copy being used */
+        result = wlp_copy_eda_node(&wlp->eda, dev_addr, eda_entry);
+        if (result < 0) {
+                if (printk_ratelimit())
+                        dev_err(dev, "WLP: Cannot find EDA entry for "
+                                "neighbor %02x:%02x \n",
+                                dev_addr->data[1], dev_addr->data[0]);
+        }
+        result = wlp_wss_prep_hdr(wlp, eda_entry, skb);
+        if (result < 0) {
+                if (printk_ratelimit())
+                        dev_err(dev, "WLP: Unable to prepare frame header for "
+                                "transmission (neighbor %02x:%02x). \n",
+                                dev_addr->data[1], dev_addr->data[0]);
+                dev_kfree_skb(skb);
+                goto out;
+        }
+        BUG_ON(wlp->xmit_frame == NULL);
+        result = wlp->xmit_frame(wlp, skb, dev_addr);
+        if (result < 0) {
+                if (printk_ratelimit())
+                        dev_err(dev, "WLP: Unable to transmit frame: %d\n",
+                                result);
+                if (result == -ENXIO)
+                        dev_err(dev, "WLP: Is network interface up? \n");
+                /* We could try again ... */
+                dev_kfree_skb(skb);/*we need to free if tx fails */
+        }
+out:
+        kfree(conn_ctx);
+        BUG_ON(wlp->start_queue == NULL);
+        wlp->start_queue(wlp);
+        mutex_unlock(&wss->mutex);
+        d_fnend(5, dev, "wlp %p, wss %p (wssid %s)\n", wlp, wss, buf);
+}
+
+/**
+ * Add WLP header to outgoing skb
+ *
+ * @eda_entry: pointer to neighbor's entry in the EDA cache
+ * @_skb:      skb containing data destined to the neighbor
+ */
+int wlp_wss_prep_hdr(struct wlp *wlp, struct wlp_eda_node *eda_entry,
+                     void *_skb)
+{
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        int result = 0;
+        unsigned char *eth_addr = eda_entry->eth_addr;
+        struct uwb_dev_addr *dev_addr = &eda_entry->dev_addr;
+        struct sk_buff *skb = _skb;
+        struct wlp_frame_std_abbrv_hdr *std_hdr;
+
+        d_fnstart(6, dev, "wlp %p \n", wlp);
+        if (eda_entry->state == WLP_WSS_CONNECTED) {
+                /* Add WLP header */
+                BUG_ON(skb_headroom(skb) < sizeof(*std_hdr));
+                std_hdr = (void *) __skb_push(skb, sizeof(*std_hdr));
+                std_hdr->hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID);
+                std_hdr->hdr.type = WLP_FRAME_STANDARD;
+                std_hdr->tag = eda_entry->wss->tag;
+        } else {
+                if (printk_ratelimit())
+                        dev_err(dev, "WLP: Destination neighbor (Ethernet: "
+                                "%02x:%02x:%02x:%02x:%02x:%02x, Dev: "
+                                "%02x:%02x) is not connected. \n", eth_addr[0],
+                                eth_addr[1], eth_addr[2], eth_addr[3],
+                                eth_addr[4], eth_addr[5], dev_addr->data[1],
+                                dev_addr->data[0]);
+                result = -EINVAL;
+        }
+        d_fnend(6, dev, "wlp %p \n", wlp);
+        return result;
+}
+
+
+/**
+ * Prepare skb for neighbor: connect if not already and prep WLP header
+ *
+ * This function is called in interrupt context, but it needs to sleep. We
+ * temporarily stop the net queue to establish the WLP connection.
+ * Setup of the WLP connection and restart of queue is scheduled
+ * on the default work queue.
+ *
+ * run with eda->lock held (spinlock)
+ */
+int wlp_wss_connect_prep(struct wlp *wlp, struct wlp_eda_node *eda_entry,
+                         void *_skb)
+{
+        int result = 0;
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        struct uwb_dev_addr *dev_addr = &eda_entry->dev_addr;
+        unsigned char *eth_addr = eda_entry->eth_addr;
+        struct sk_buff *skb = _skb;
+        struct wlp_assoc_conn_ctx *conn_ctx;
+
+        d_fnstart(5, dev, "wlp %p\n", wlp);
+        d_printf(5, dev, "To neighbor %02x:%02x with eth "
+                  "%02x:%02x:%02x:%02x:%02x:%02x\n", dev_addr->data[1],
+                  dev_addr->data[0], eth_addr[0], eth_addr[1], eth_addr[2],
+                  eth_addr[3], eth_addr[4], eth_addr[5]);
+        if (eda_entry->state == WLP_WSS_UNCONNECTED) {
+                /* We don't want any more packets while we set up connection */
+                BUG_ON(wlp->stop_queue == NULL);
+                wlp->stop_queue(wlp);
+                conn_ctx = kmalloc(sizeof(*conn_ctx), GFP_ATOMIC);
+                if (conn_ctx == NULL) {
+                        if (printk_ratelimit())
+                                dev_err(dev, "WLP: Unable to allocate memory "
+                                        "for connection handling.\n");
+                        result = -ENOMEM;
+                        goto out;
+                }
+                conn_ctx->wlp = wlp;
+                conn_ctx->skb = skb;
+                conn_ctx->eda_entry = *eda_entry;
+                INIT_WORK(&conn_ctx->ws, wlp_wss_connect_send);
+                schedule_work(&conn_ctx->ws);
+                result = 1;
+        } else if (eda_entry->state == WLP_WSS_CONNECT_FAILED) {
+                /* Previous connection attempts failed, don't retry - see
+                 * conditions for connection in WLP 0.99 [7.6.2] */
+                if (printk_ratelimit())
+                        dev_err(dev, "Could not connect to neighbor "
+                         "previously. Not retrying. \n");
+                result = -ENONET;
+                goto out;
+        } else { /* eda_entry->state == WLP_WSS_CONNECTED */
+                d_printf(5, dev, "Neighbor is connected, preparing frame.\n");
+                result = wlp_wss_prep_hdr(wlp, eda_entry, skb);
+        }
+out:
+        d_fnend(5, dev, "wlp %p, result = %d \n", wlp, result);
+        return result;
+}
+
+/**
+ * Emulate broadcast: copy skb, send copy to neighbor (connect if not already)
+ *
+ * We need to copy skbs in the case where we emulate broadcast through
+ * unicast. We copy instead of clone because we are modifying the data of
+ * the frame after copying ... clones share data so we cannot emulate
+ * broadcast using clones.
+ *
+ * run with eda->lock held (spinlock)
+ */
+int wlp_wss_send_copy(struct wlp *wlp, struct wlp_eda_node *eda_entry,
+                      void *_skb)
+{
+        int result = -ENOMEM;
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        struct sk_buff *skb = _skb;
+        struct sk_buff *copy;
+        struct uwb_dev_addr *dev_addr = &eda_entry->dev_addr;
+
+        d_fnstart(5, dev, "to neighbor %02x:%02x, skb (%p) \n",
+                  dev_addr->data[1], dev_addr->data[0], skb);
+        copy = skb_copy(skb, GFP_ATOMIC);
+        if (copy == NULL) {
+                if (printk_ratelimit())
+                        dev_err(dev, "WLP: Unable to copy skb for "
+                                "transmission.\n");
+                goto out;
+        }
+        result = wlp_wss_connect_prep(wlp, eda_entry, copy);
+        if (result < 0) {
+                if (printk_ratelimit())
+                        dev_err(dev, "WLP: Unable to connect/send skb "
+                                "to neighbor.\n");
+                dev_kfree_skb_irq(copy);
+                goto out;
+        } else if (result == 1)
+                /* Frame will be transmitted separately */
+                goto out;
+        BUG_ON(wlp->xmit_frame == NULL);
+        result = wlp->xmit_frame(wlp, copy, dev_addr);
+        if (result < 0) {
+                if (printk_ratelimit())
+                        dev_err(dev, "WLP: Unable to transmit frame: %d\n",
+                                result);
+                if ((result == -ENXIO) && printk_ratelimit())
+                        dev_err(dev, "WLP: Is network interface up? \n");
+                /* We could try again ... */
+                dev_kfree_skb_irq(copy);/*we need to free if tx fails */
+        }
+out:
+        d_fnend(5, dev, "to neighbor %02x:%02x \n", dev_addr->data[1],
+                  dev_addr->data[0]);
+        return result;
+}
+
+
+/**
+ * Setup WSS
+ *
+ * Should be called by network driver after the interface has been given a
+ * MAC address.
+ */
+int wlp_wss_setup(struct net_device *net_dev, struct wlp_wss *wss)
+{
+        struct wlp *wlp = container_of(wss, struct wlp, wss);
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        int result = 0;
+        d_fnstart(5, dev, "wss (%p) \n", wss);
+        mutex_lock(&wss->mutex);
+        wss->kobj.parent = &net_dev->dev.kobj;
+        if (!is_valid_ether_addr(net_dev->dev_addr)) {
+                dev_err(dev, "WLP: Invalid MAC address. Cannot use for"
+                       "virtual.\n");
+                result = -EINVAL;
+                goto out;
+        }
+        memcpy(wss->virtual_addr.data, net_dev->dev_addr,
+               sizeof(wss->virtual_addr.data));
+out:
+        mutex_unlock(&wss->mutex);
+        d_fnend(5, dev, "wss (%p) \n", wss);
+        return result;
+}
+EXPORT_SYMBOL_GPL(wlp_wss_setup);
+
+/**
+ * Remove WSS
+ *
+ * Called by client that configured WSS through wlp_wss_setup(). This
+ * function is called when client no longer needs WSS, eg. client shuts
+ * down.
+ *
+ * We remove the WLP IE from the beacon before initiating local cleanup.
+ */
+void wlp_wss_remove(struct wlp_wss *wss)
+{
+        struct wlp *wlp = container_of(wss, struct wlp, wss);
+        struct device *dev = &wlp->rc->uwb_dev.dev;
+        d_fnstart(5, dev, "wss (%p) \n", wss);
+        mutex_lock(&wss->mutex);
+        if (wss->state == WLP_WSS_STATE_ACTIVE)
+                uwb_rc_ie_rm(wlp->rc, UWB_IE_WLP);
+        if (wss->state != WLP_WSS_STATE_NONE) {
+                sysfs_remove_group(&wss->kobj, &wss_attr_group);
+                kobject_put(&wss->kobj);
+        }
+        wss->kobj.parent = NULL;
+        memset(&wss->virtual_addr, 0, sizeof(wss->virtual_addr));
+        /* Cleanup EDA cache */
+        wlp_eda_release(&wlp->eda);
+        wlp_eda_init(&wlp->eda);
+        mutex_unlock(&wss->mutex);
+        d_fnend(5, dev, "wss (%p) \n", wss);
+}
+EXPORT_SYMBOL_GPL(wlp_wss_remove);
diff --git a/drivers/watchdog/w83697ug_wdt.c b/drivers/watchdog/w83697ug_wdt.c
index c73b5e2919c6..ada8ad82d993 100644
--- a/drivers/watchdog/w83697ug_wdt.c
+++ b/drivers/watchdog/w83697ug_wdt.c
@@ -102,7 +102,7 @@ static void w83697ug_select_wd_register(void)
 
         } else {
                 printk(KERN_ERR PFX "No W83697UG/UF could be found\n");
-                return -EIO;
+                return;
         }
 
         outb_p(0x07, WDT_EFER); /* point to logical device number reg */
diff --git a/fs/ext3/ioctl.c b/fs/ext3/ioctl.c
index 0d0c70151642..b7394d05ee8e 100644
--- a/fs/ext3/ioctl.c
+++ b/fs/ext3/ioctl.c
@@ -239,7 +239,7 @@ setrsvsz_out:
         case EXT3_IOC_GROUP_EXTEND: {
                 ext3_fsblk_t n_blocks_count;
                 struct super_block *sb = inode->i_sb;
-                int err;
+                int err, err2;
 
                 if (!capable(CAP_SYS_RESOURCE))
                         return -EPERM;
@@ -254,8 +254,10 @@ setrsvsz_out:
                 }
                 err = ext3_group_extend(sb, EXT3_SB(sb)->s_es, n_blocks_count);
                 journal_lock_updates(EXT3_SB(sb)->s_journal);
-                journal_flush(EXT3_SB(sb)->s_journal);
+                err2 = journal_flush(EXT3_SB(sb)->s_journal);
                 journal_unlock_updates(EXT3_SB(sb)->s_journal);
+                if (err == 0)
+                        err = err2;
 group_extend_out:
                 mnt_drop_write(filp->f_path.mnt);
                 return err;
@@ -263,7 +265,7 @@ group_extend_out:
         case EXT3_IOC_GROUP_ADD: {
                 struct ext3_new_group_data input;
                 struct super_block *sb = inode->i_sb;
-                int err;
+                int err, err2;
 
                 if (!capable(CAP_SYS_RESOURCE))
                         return -EPERM;
@@ -280,8 +282,10 @@ group_extend_out:
 
                 err = ext3_group_add(sb, &input);
                 journal_lock_updates(EXT3_SB(sb)->s_journal);
-                journal_flush(EXT3_SB(sb)->s_journal);
+                err2 = journal_flush(EXT3_SB(sb)->s_journal);
                 journal_unlock_updates(EXT3_SB(sb)->s_journal);
+                if (err == 0)
+                        err = err2;
 group_add_out:
                 mnt_drop_write(filp->f_path.mnt);
                 return err;
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index 3a260af5544d..cac29ee3b14a 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -393,7 +393,8 @@ static void ext3_put_super (struct super_block * sb)
         int i;
 
         ext3_xattr_put_super(sb);
-        journal_destroy(sbi->s_journal);
+        if (journal_destroy(sbi->s_journal) < 0)
+                ext3_abort(sb, __func__, "Couldn't clean up the journal");
         if (!(sb->s_flags & MS_RDONLY)) {
                 EXT3_CLEAR_INCOMPAT_FEATURE(sb, EXT3_FEATURE_INCOMPAT_RECOVER);
                 es->s_state = cpu_to_le16(sbi->s_mount_state);
@@ -2296,7 +2297,9 @@ static void ext3_mark_recovery_complete(struct super_block * sb,
         journal_t *journal = EXT3_SB(sb)->s_journal;
 
         journal_lock_updates(journal);
-        journal_flush(journal);
+        if (journal_flush(journal) < 0)
+                goto out;
+
         lock_super(sb);
         if (EXT3_HAS_INCOMPAT_FEATURE(sb, EXT3_FEATURE_INCOMPAT_RECOVER) &&
             sb->s_flags & MS_RDONLY) {
@@ -2305,6 +2308,8 @@ static void ext3_mark_recovery_complete(struct super_block * sb,
                 ext3_commit_super(sb, es, 1);
         }
         unlock_super(sb);
+
+out:
         journal_unlock_updates(journal);
 }
 
@@ -2404,7 +2409,13 @@ static void ext3_write_super_lockfs(struct super_block *sb)
 
                 /* Now we set up the journal barrier. */
                 journal_lock_updates(journal);
-                journal_flush(journal);
+
+                /*
+                 * We don't want to clear needs_recovery flag when we failed
+                 * to flush the journal.
+                 */
+                if (journal_flush(journal) < 0)
+                        return;
 
                 /* Journal blocked and flushed, clear needs_recovery flag. */
                 EXT3_CLEAR_INCOMPAT_FEATURE(sb, EXT3_FEATURE_INCOMPAT_RECOVER);
@@ -2822,8 +2833,12 @@ static int ext3_quota_on(struct super_block *sb, int type, int format_id,
                  * otherwise be livelocked...
                  */
                 journal_lock_updates(EXT3_SB(sb)->s_journal);
-                journal_flush(EXT3_SB(sb)->s_journal);
+                err = journal_flush(EXT3_SB(sb)->s_journal);
                 journal_unlock_updates(EXT3_SB(sb)->s_journal);
+                if (err) {
+                        path_put(&nd.path);
+                        return err;
+                }
         }
 
         err = vfs_quota_on_path(sb, type, format_id, &nd.path);
diff --git a/fs/jbd/checkpoint.c b/fs/jbd/checkpoint.c
index a5432bbbfb88..1bd8d4acc6f2 100644
--- a/fs/jbd/checkpoint.c
+++ b/fs/jbd/checkpoint.c
@@ -93,7 +93,8 @@ static int __try_to_free_cp_buf(struct journal_head *jh)
         int ret = 0;
         struct buffer_head *bh = jh2bh(jh);
 
-        if (jh->b_jlist == BJ_None && !buffer_locked(bh) && !buffer_dirty(bh)) {
+        if (jh->b_jlist == BJ_None && !buffer_locked(bh) &&
+            !buffer_dirty(bh) && !buffer_write_io_error(bh)) {
                 JBUFFER_TRACE(jh, "remove from checkpoint list");
                 ret = __journal_remove_checkpoint(jh) + 1;
                 jbd_unlock_bh_state(bh);
@@ -126,14 +127,29 @@ void __log_wait_for_space(journal_t *journal)
 
                 /*
                  * Test again, another process may have checkpointed while we
-                 * were waiting for the checkpoint lock
+                 * were waiting for the checkpoint lock. If there are no
+                 * outstanding transactions there is nothing to checkpoint and
+                 * we can't make progress. Abort the journal in this case.
                  */
                 spin_lock(&journal->j_state_lock);
+                spin_lock(&journal->j_list_lock);
                 nblocks = jbd_space_needed(journal);
                 if (__log_space_left(journal) < nblocks) {
+                        int chkpt = journal->j_checkpoint_transactions != NULL;
+
+                        spin_unlock(&journal->j_list_lock);
                         spin_unlock(&journal->j_state_lock);
-                        log_do_checkpoint(journal);
+                        if (chkpt) {
+                                log_do_checkpoint(journal);
+                        } else {
+                                printk(KERN_ERR "%s: no transactions\n",
+                                       __func__);
+                                journal_abort(journal, 0);
+                        }
+
                         spin_lock(&journal->j_state_lock);
+                } else {
+                        spin_unlock(&journal->j_list_lock);
                 }
                 mutex_unlock(&journal->j_checkpoint_mutex);
         }
@@ -160,21 +176,25 @@ static void jbd_sync_bh(journal_t *journal, struct buffer_head *bh)
  * buffers. Note that we take the buffers in the opposite ordering
  * from the one in which they were submitted for IO.
  *
+ * Return 0 on success, and return <0 if some buffers have failed
+ * to be written out.
+ *
  * Called with j_list_lock held.
  */
-static void __wait_cp_io(journal_t *journal, transaction_t *transaction)
+static int __wait_cp_io(journal_t *journal, transaction_t *transaction)
 {
         struct journal_head *jh;
         struct buffer_head *bh;
         tid_t this_tid;
         int released = 0;
+        int ret = 0;
 
         this_tid = transaction->t_tid;
 restart:
         /* Did somebody clean up the transaction in the meanwhile? */
         if (journal->j_checkpoint_transactions != transaction ||
                         transaction->t_tid != this_tid)
-                return;
+                return ret;
         while (!released && transaction->t_checkpoint_io_list) {
                 jh = transaction->t_checkpoint_io_list;
                 bh = jh2bh(jh);
@@ -194,6 +214,9 @@ restart:
                         spin_lock(&journal->j_list_lock);
                         goto restart;
                 }
+                if (unlikely(buffer_write_io_error(bh)))
+                        ret = -EIO;
+
                 /*
                  * Now in whatever state the buffer currently is, we know that
                  * it has been written out and so we can drop it from the list
@@ -203,6 +226,8 @@ restart:
                 journal_remove_journal_head(bh);
                 __brelse(bh);
         }
+
+        return ret;
 }
 
 #define NR_BATCH        64
@@ -226,7 +251,8 @@ __flush_batch(journal_t *journal, struct buffer_head **bhs, int *batch_count)
  * Try to flush one buffer from the checkpoint list to disk.
  *
  * Return 1 if something happened which requires us to abort the current
- * scan of the checkpoint list.
+ * scan of the checkpoint list.  Return <0 if the buffer has failed to
+ * be written out.
  *
  * Called with j_list_lock held and drops it if 1 is returned
  * Called under jbd_lock_bh_state(jh2bh(jh)), and drops it
@@ -256,6 +282,9 @@ static int __process_buffer(journal_t *journal, struct journal_head *jh,
                 log_wait_commit(journal, tid);
                 ret = 1;
         } else if (!buffer_dirty(bh)) {
+                ret = 1;
+                if (unlikely(buffer_write_io_error(bh)))
+                        ret = -EIO;
                 J_ASSERT_JH(jh, !buffer_jbddirty(bh));
                 BUFFER_TRACE(bh, "remove from checkpoint");
                 __journal_remove_checkpoint(jh);
@@ -263,7 +292,6 @@ static int __process_buffer(journal_t *journal, struct journal_head *jh,
                 jbd_unlock_bh_state(bh);
                 journal_remove_journal_head(bh);
                 __brelse(bh);
-                ret = 1;
         } else {
                 /*
                  * Important: we are about to write the buffer, and
@@ -295,6 +323,7 @@ static int __process_buffer(journal_t *journal, struct journal_head *jh,
  * to disk. We submit larger chunks of data at once.
  *
  * The journal should be locked before calling this function.
+ * Called with j_checkpoint_mutex held.
  */
 int log_do_checkpoint(journal_t *journal)
 {
@@ -318,6 +347,7 @@ int log_do_checkpoint(journal_t *journal)
          * OK, we need to start writing disk blocks.  Take one transaction
          * and write it.
          */
+        result = 0;
         spin_lock(&journal->j_list_lock);
         if (!journal->j_checkpoint_transactions)
                 goto out;
@@ -334,7 +364,7 @@ restart:
                 int batch_count = 0;
                 struct buffer_head *bhs[NR_BATCH];
                 struct journal_head *jh;
-                int retry = 0;
+                int retry = 0, err;
 
                 while (!retry && transaction->t_checkpoint_list) {
                         struct buffer_head *bh;
@@ -347,6 +377,8 @@ restart:
                                 break;
                         }
                         retry = __process_buffer(journal, jh, bhs,&batch_count);
+                        if (retry < 0 && !result)
+                                result = retry;
                         if (!retry && (need_resched() ||
                                 spin_needbreak(&journal->j_list_lock))) {
                                 spin_unlock(&journal->j_list_lock);
@@ -371,14 +403,18 @@ restart:
                  * Now we have cleaned up the first transaction's checkpoint
                  * list. Let's clean up the second one
                  */
-                __wait_cp_io(journal, transaction);
+                err = __wait_cp_io(journal, transaction);
+                if (!result)
+                        result = err;
         }
 out:
         spin_unlock(&journal->j_list_lock);
-        result = cleanup_journal_tail(journal);
         if (result < 0)
-                return result;
-        return 0;
+                journal_abort(journal, result);
+        else
+                result = cleanup_journal_tail(journal);
+
+        return (result < 0) ? result : 0;
 }
 
 /*
@@ -394,8 +430,9 @@ out:
  * This is the only part of the journaling code which really needs to be
  * aware of transaction aborts.  Checkpointing involves writing to the
  * main filesystem area rather than to the journal, so it can proceed
- * even in abort state, but we must not update the journal superblock if
- * we have an abort error outstanding.
+ * even in abort state, but we must not update the super block if
+ * checkpointing may have failed.  Otherwise, we would lose some metadata
+ * buffers which should be written-back to the filesystem.
  */
 
 int cleanup_journal_tail(journal_t *journal)
@@ -404,6 +441,9 @@ int cleanup_journal_tail(journal_t *journal)
         tid_t           first_tid;
         unsigned long   blocknr, freed;
 
+        if (is_journal_aborted(journal))
+                return 1;
+
         /* OK, work out the oldest transaction remaining in the log, and
          * the log block it starts at.
          *
diff --git a/fs/jbd/journal.c b/fs/jbd/journal.c
index aa7143a8349b..9e4fa52d7dc8 100644
--- a/fs/jbd/journal.c
+++ b/fs/jbd/journal.c
@@ -1121,9 +1121,12 @@ recovery_error:
  *
  * Release a journal_t structure once it is no longer in use by the
  * journaled object.
+ * Return <0 if we couldn't clean up the journal.
  */
-void journal_destroy(journal_t *journal)
+int journal_destroy(journal_t *journal)
 {
+        int err = 0;
+
         /* Wait for the commit thread to wake up and die. */
         journal_kill_thread(journal);
 
@@ -1146,11 +1149,16 @@ void journal_destroy(journal_t *journal)
         J_ASSERT(journal->j_checkpoint_transactions == NULL);
         spin_unlock(&journal->j_list_lock);
 
-        /* We can now mark the journal as empty. */
-        journal->j_tail = 0;
-        journal->j_tail_sequence = ++journal->j_transaction_sequence;
         if (journal->j_sb_buffer) {
-                journal_update_superblock(journal, 1);
+                if (!is_journal_aborted(journal)) {
+                        /* We can now mark the journal as empty. */
+                        journal->j_tail = 0;
+                        journal->j_tail_sequence =
+                                ++journal->j_transaction_sequence;
+                        journal_update_superblock(journal, 1);
+                } else {
+                        err = -EIO;
+                }
                 brelse(journal->j_sb_buffer);
         }
 
@@ -1160,6 +1168,8 @@ void journal_destroy(journal_t *journal)
                 journal_destroy_revoke(journal);
         kfree(journal->j_wbuf);
         kfree(journal);
+
+        return err;
 }
 
 
@@ -1359,10 +1369,16 @@ int journal_flush(journal_t *journal)
         spin_lock(&journal->j_list_lock);
         while (!err && journal->j_checkpoint_transactions != NULL) {
                 spin_unlock(&journal->j_list_lock);
+                mutex_lock(&journal->j_checkpoint_mutex);
                 err = log_do_checkpoint(journal);
+                mutex_unlock(&journal->j_checkpoint_mutex);
                 spin_lock(&journal->j_list_lock);
         }
         spin_unlock(&journal->j_list_lock);
+
+        if (is_journal_aborted(journal))
+                return -EIO;
+
         cleanup_journal_tail(journal);
 
         /* Finally, mark the journal as really needing no recovery.
@@ -1384,7 +1400,7 @@ int journal_flush(journal_t *journal)
         J_ASSERT(journal->j_head == journal->j_tail);
         J_ASSERT(journal->j_tail_sequence == journal->j_transaction_sequence);
         spin_unlock(&journal->j_state_lock);
-        return err;
+        return 0;
 }
 
 /**
diff --git a/fs/jbd/recovery.c b/fs/jbd/recovery.c
index 43bc5e5ed064..db5e982c5ddf 100644
--- a/fs/jbd/recovery.c
+++ b/fs/jbd/recovery.c
@@ -223,7 +223,7 @@ do {									\
  */
 int journal_recover(journal_t *journal)
 {
-        int                     err;
+        int                     err, err2;
         journal_superblock_t *  sb;
 
         struct recovery_info    info;
@@ -261,7 +261,10 @@ int journal_recover(journal_t *journal)
         journal->j_transaction_sequence = ++info.end_transaction;
 
         journal_clear_revoke(journal);
-        sync_blockdev(journal->j_fs_dev);
+        err2 = sync_blockdev(journal->j_fs_dev);
+        if (!err)
+                err = err2;
+
         return err;
 }
 
diff --git a/include/asm-generic/mutex-dec.h b/include/asm-generic/mutex-dec.h
index ed108be6743f..f104af7cf437 100644
--- a/include/asm-generic/mutex-dec.h
+++ b/include/asm-generic/mutex-dec.h
@@ -22,8 +22,6 @@ __mutex_fastpath_lock(atomic_t *count, void (*fail_fn)(atomic_t *))
 {
         if (unlikely(atomic_dec_return(count) < 0))
                 fail_fn(count);
-        else
-                smp_mb();
 }
 
 /**
@@ -41,10 +39,7 @@ __mutex_fastpath_lock_retval(atomic_t *count, int (*fail_fn)(atomic_t *))
 {
         if (unlikely(atomic_dec_return(count) < 0))
                 return fail_fn(count);
-        else {
-                smp_mb();
-                return 0;
-        }
+        return 0;
 }
 
 /**
@@ -63,7 +58,6 @@ __mutex_fastpath_lock_retval(atomic_t *count, int (*fail_fn)(atomic_t *))
 static inline void
 __mutex_fastpath_unlock(atomic_t *count, void (*fail_fn)(atomic_t *))
 {
-        smp_mb();
         if (unlikely(atomic_inc_return(count) <= 0))
                 fail_fn(count);
 }
@@ -88,25 +82,9 @@ __mutex_fastpath_unlock(atomic_t *count, void (*fail_fn)(atomic_t *))
 static inline int
 __mutex_fastpath_trylock(atomic_t *count, int (*fail_fn)(atomic_t *))
 {
-        /*
-         * We have two variants here. The cmpxchg based one is the best one
-         * because it never induce a false contention state.  It is included
-         * here because architectures using the inc/dec algorithms over the
-         * xchg ones are much more likely to support cmpxchg natively.
-         *
-         * If not we fall back to the spinlock based variant - that is
-         * just as efficient (and simpler) as a 'destructive' probing of
-         * the mutex state would be.
-         */
-#ifdef __HAVE_ARCH_CMPXCHG
-        if (likely(atomic_cmpxchg(count, 1, 0) == 1)) {
-                smp_mb();
+        if (likely(atomic_cmpxchg(count, 1, 0) == 1))
                 return 1;
-        }
         return 0;
-#else
-        return fail_fn(count);
-#endif
 }
 
 #endif
diff --git a/include/asm-generic/mutex-xchg.h b/include/asm-generic/mutex-xchg.h
index 7b9cd2cbfebe..580a6d35c700 100644
--- a/include/asm-generic/mutex-xchg.h
+++ b/include/asm-generic/mutex-xchg.h
@@ -27,8 +27,6 @@ __mutex_fastpath_lock(atomic_t *count, void (*fail_fn)(atomic_t *))
 {
         if (unlikely(atomic_xchg(count, 0) != 1))
                 fail_fn(count);
-        else
-                smp_mb();
 }
 
 /**
@@ -46,10 +44,7 @@ __mutex_fastpath_lock_retval(atomic_t *count, int (*fail_fn)(atomic_t *))
 {
         if (unlikely(atomic_xchg(count, 0) != 1))
                 return fail_fn(count);
-        else {
-                smp_mb();
-                return 0;
-        }
+        return 0;
 }
 
 /**
@@ -67,7 +62,6 @@ __mutex_fastpath_lock_retval(atomic_t *count, int (*fail_fn)(atomic_t *))
 static inline void
 __mutex_fastpath_unlock(atomic_t *count, void (*fail_fn)(atomic_t *))
 {
-        smp_mb();
         if (unlikely(atomic_xchg(count, 1) != 0))
                 fail_fn(count);
 }
@@ -110,7 +104,6 @@ __mutex_fastpath_trylock(atomic_t *count, int (*fail_fn)(atomic_t *))
                 if (prev < 0)
                         prev = 0;
         }
-        smp_mb();
 
         return prev;
 }
diff --git a/include/asm-x86/iommu.h b/include/asm-x86/iommu.h
index 961e746da977..2daaffcda52f 100644
--- a/include/asm-x86/iommu.h
+++ b/include/asm-x86/iommu.h
@@ -7,9 +7,13 @@ extern struct dma_mapping_ops nommu_dma_ops;
 extern int force_iommu, no_iommu;
 extern int iommu_detected;
 extern int dmar_disabled;
+extern int forbid_dac;
 
 extern unsigned long iommu_nr_pages(unsigned long addr, unsigned long len);
 
+/* 10 seconds */
+#define DMAR_OPERATION_TIMEOUT ((cycles_t) tsc_khz*10*1000)
+
 #ifdef CONFIG_GART_IOMMU
 extern int gart_iommu_aperture;
 extern int gart_iommu_aperture_allowed;
diff --git a/include/asm-xtensa/io.h b/include/asm-xtensa/io.h
index 47c3616ea9ac..07b7299dab20 100644
--- a/include/asm-xtensa/io.h
+++ b/include/asm-xtensa/io.h
@@ -18,10 +18,12 @@
 
 #include <linux/types.h>
 
-#define XCHAL_KIO_CACHED_VADDR  0xf0000000
-#define XCHAL_KIO_BYPASS_VADDR  0xf8000000
+#define XCHAL_KIO_CACHED_VADDR  0xe0000000
+#define XCHAL_KIO_BYPASS_VADDR  0xf0000000
 #define XCHAL_KIO_PADDR         0xf0000000
-#define XCHAL_KIO_SIZE          0x08000000
+#define XCHAL_KIO_SIZE          0x10000000
+
+#define IOADDR(x)               (XCHAL_KIO_BYPASS_VADDR + (x))
 
 /*
  * swap functions to change byte order from little-endian to big-endian and
diff --git a/include/asm-xtensa/rwsem.h b/include/asm-xtensa/rwsem.h
index 0aad3a587551..e39edf5c86f2 100644
--- a/include/asm-xtensa/rwsem.h
+++ b/include/asm-xtensa/rwsem.h
@@ -13,6 +13,10 @@
 #ifndef _XTENSA_RWSEM_H
 #define _XTENSA_RWSEM_H
 
+#ifndef _LINUX_RWSEM_H
+#error "Please don't include <asm/rwsem.h> directly, use <linux/rwsem.h> instead."
+#endif
+
 #include <linux/list.h>
 #include <linux/spinlock.h>
 #include <asm/atomic.h>
diff --git a/include/asm-xtensa/variant-dc232b/core.h b/include/asm-xtensa/variant-dc232b/core.h
new file mode 100644
index 000000000000..525bd3d90154
--- /dev/null
+++ b/include/asm-xtensa/variant-dc232b/core.h
@@ -0,0 +1,424 @@
+/*
+ * Xtensa processor core configuration information.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (c) 1999-2007 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_CORE_CONFIGURATION_H
+#define _XTENSA_CORE_CONFIGURATION_H
+
+
+/****************************************************************************
+            Parameters Useful for Any Code, USER or PRIVILEGED
+ ****************************************************************************/
+
+/*
+ *  Note:  Macros of the form XCHAL_HAVE_*** have a value of 1 if the option is
+ *  configured, and a value of 0 otherwise.  These macros are always defined.
+ */
+
+
+/*----------------------------------------------------------------------
+                                ISA
+  ----------------------------------------------------------------------*/
+
+#define XCHAL_HAVE_BE                   0       /* big-endian byte ordering */
+#define XCHAL_HAVE_WINDOWED             1       /* windowed registers option */
+#define XCHAL_NUM_AREGS                 32      /* num of physical addr regs */
+#define XCHAL_NUM_AREGS_LOG2            5       /* log2(XCHAL_NUM_AREGS) */
+#define XCHAL_MAX_INSTRUCTION_SIZE      3       /* max instr bytes (3..8) */
+#define XCHAL_HAVE_DEBUG                1       /* debug option */
+#define XCHAL_HAVE_DENSITY              1       /* 16-bit instructions */
+#define XCHAL_HAVE_LOOPS                1       /* zero-overhead loops */
+#define XCHAL_HAVE_NSA                  1       /* NSA/NSAU instructions */
+#define XCHAL_HAVE_MINMAX               1       /* MIN/MAX instructions */
+#define XCHAL_HAVE_SEXT                 1       /* SEXT instruction */
+#define XCHAL_HAVE_CLAMPS               1       /* CLAMPS instruction */
+#define XCHAL_HAVE_MUL16                1       /* MUL16S/MUL16U instructions */
+#define XCHAL_HAVE_MUL32                1       /* MULL instruction */
+#define XCHAL_HAVE_MUL32_HIGH           0       /* MULUH/MULSH instructions */
+#define XCHAL_HAVE_DIV32                1       /* QUOS/QUOU/REMS/REMU instructions */
+#define XCHAL_HAVE_L32R                 1       /* L32R instruction */
+#define XCHAL_HAVE_ABSOLUTE_LITERALS    1       /* non-PC-rel (extended) L32R */
+#define XCHAL_HAVE_CONST16              0       /* CONST16 instruction */
+#define XCHAL_HAVE_ADDX                 1       /* ADDX#/SUBX# instructions */
+#define XCHAL_HAVE_WIDE_BRANCHES        0       /* B*.W18 or B*.W15 instr's */
+#define XCHAL_HAVE_PREDICTED_BRANCHES   0       /* B[EQ/EQZ/NE/NEZ]T instr's */
+#define XCHAL_HAVE_CALL4AND12           1       /* (obsolete option) */
+#define XCHAL_HAVE_ABS                  1       /* ABS instruction */
+/*#define XCHAL_HAVE_POPC               0*/     /* POPC instruction */
+/*#define XCHAL_HAVE_CRC                0*/     /* CRC instruction */
+#define XCHAL_HAVE_RELEASE_SYNC         1       /* L32AI/S32RI instructions */
+#define XCHAL_HAVE_S32C1I               1       /* S32C1I instruction */
+#define XCHAL_HAVE_SPECULATION          0       /* speculation */
+#define XCHAL_HAVE_FULL_RESET           1       /* all regs/state reset */
+#define XCHAL_NUM_CONTEXTS              1       /* */
+#define XCHAL_NUM_MISC_REGS             2       /* num of scratch regs (0..4) */
+#define XCHAL_HAVE_TAP_MASTER           0       /* JTAG TAP control instr's */
+#define XCHAL_HAVE_PRID                 1       /* processor ID register */
+#define XCHAL_HAVE_THREADPTR            1       /* THREADPTR register */
+#define XCHAL_HAVE_BOOLEANS             0       /* boolean registers */
+#define XCHAL_HAVE_CP                   1       /* CPENABLE reg (coprocessor) */
+#define XCHAL_CP_MAXCFG                 8       /* max allowed cp id plus one */
+#define XCHAL_HAVE_MAC16                1       /* MAC16 package */
+#define XCHAL_HAVE_VECTORFPU2005        0       /* vector floating-point pkg */
+#define XCHAL_HAVE_FP                   0       /* floating point pkg */
+#define XCHAL_HAVE_VECTRA1              0       /* Vectra I  pkg */
+#define XCHAL_HAVE_VECTRALX             0       /* Vectra LX pkg */
+#define XCHAL_HAVE_HIFI2                0       /* HiFi2 Audio Engine pkg */
+
+
+/*----------------------------------------------------------------------
+                                MISC
+  ----------------------------------------------------------------------*/
+
+#define XCHAL_NUM_WRITEBUFFER_ENTRIES   8       /* size of write buffer */
+#define XCHAL_INST_FETCH_WIDTH          4       /* instr-fetch width in bytes */
+#define XCHAL_DATA_WIDTH                4       /* data width in bytes */
+/*  In T1050, applies to selected core load and store instructions (see ISA): */
+#define XCHAL_UNALIGNED_LOAD_EXCEPTION  1       /* unaligned loads cause exc. */
+#define XCHAL_UNALIGNED_STORE_EXCEPTION 1       /* unaligned stores cause exc.*/
+
+#define XCHAL_SW_VERSION                701001  /* sw version of this header */
+
+#define XCHAL_CORE_ID                   "dc232b"        /* alphanum core name
+                                                   (CoreID) set in the Xtensa
+                                                   Processor Generator */
+
+#define XCHAL_CORE_DESCRIPTION          "Diamond 232L Standard Core Rev.B (LE)"
+#define XCHAL_BUILD_UNIQUE_ID           0x0000BEEF      /* 22-bit sw build ID */
+
+/*
+ *  These definitions describe the hardware targeted by this software.
+ */
+#define XCHAL_HW_CONFIGID0              0xC56307FE      /* ConfigID hi 32 bits*/
+#define XCHAL_HW_CONFIGID1              0x0D40BEEF      /* ConfigID lo 32 bits*/
+#define XCHAL_HW_VERSION_NAME           "LX2.1.1"       /* full version name */
+#define XCHAL_HW_VERSION_MAJOR          2210    /* major ver# of targeted hw */
+#define XCHAL_HW_VERSION_MINOR          1       /* minor ver# of targeted hw */
+#define XCHAL_HW_VERSION                221001  /* major*100+minor */
+#define XCHAL_HW_REL_LX2                1
+#define XCHAL_HW_REL_LX2_1              1
+#define XCHAL_HW_REL_LX2_1_1            1
+#define XCHAL_HW_CONFIGID_RELIABLE      1
+/*  If software targets a *range* of hardware versions, these are the bounds: */
+#define XCHAL_HW_MIN_VERSION_MAJOR      2210    /* major v of earliest tgt hw */
+#define XCHAL_HW_MIN_VERSION_MINOR      1       /* minor v of earliest tgt hw */
+#define XCHAL_HW_MIN_VERSION            221001  /* earliest targeted hw */
+#define XCHAL_HW_MAX_VERSION_MAJOR      2210    /* major v of latest tgt hw */
+#define XCHAL_HW_MAX_VERSION_MINOR      1       /* minor v of latest tgt hw */
+#define XCHAL_HW_MAX_VERSION            221001  /* latest targeted hw */
+
+
+/*----------------------------------------------------------------------
+                                CACHE
+  ----------------------------------------------------------------------*/
+
+#define XCHAL_ICACHE_LINESIZE           32      /* I-cache line size in bytes */
+#define XCHAL_DCACHE_LINESIZE           32      /* D-cache line size in bytes */
+#define XCHAL_ICACHE_LINEWIDTH          5       /* log2(I line size in bytes) */
+#define XCHAL_DCACHE_LINEWIDTH          5       /* log2(D line size in bytes) */
+
+#define XCHAL_ICACHE_SIZE               16384   /* I-cache size in bytes or 0 */
+#define XCHAL_DCACHE_SIZE               16384   /* D-cache size in bytes or 0 */
+
+#define XCHAL_DCACHE_IS_WRITEBACK       1       /* writeback feature */
+
+
+
+
+/****************************************************************************
+    Parameters Useful for PRIVILEGED (Supervisory or Non-Virtualized) Code
+ ****************************************************************************/
+
+
+#ifndef XTENSA_HAL_NON_PRIVILEGED_ONLY
+
+/*----------------------------------------------------------------------
+                                CACHE
+  ----------------------------------------------------------------------*/
+
+#define XCHAL_HAVE_PIF                  1       /* any outbound PIF present */
+
+/*  If present, cache size in bytes == (ways * 2^(linewidth + setwidth)).  */
+
+/*  Number of cache sets in log2(lines per way):  */
+#define XCHAL_ICACHE_SETWIDTH           7
+#define XCHAL_DCACHE_SETWIDTH           7
+
+/*  Cache set associativity (number of ways):  */
+#define XCHAL_ICACHE_WAYS               4
+#define XCHAL_DCACHE_WAYS               4
+
+/*  Cache features:  */
+#define XCHAL_ICACHE_LINE_LOCKABLE      1
+#define XCHAL_DCACHE_LINE_LOCKABLE      1
+#define XCHAL_ICACHE_ECC_PARITY         0
+#define XCHAL_DCACHE_ECC_PARITY         0
+
+/*  Number of encoded cache attr bits (see <xtensa/hal.h> for decoded bits):  */
+#define XCHAL_CA_BITS                   4
+
+
+/*----------------------------------------------------------------------
+                        INTERNAL I/D RAM/ROMs and XLMI
+  ----------------------------------------------------------------------*/
+
+#define XCHAL_NUM_INSTROM               0       /* number of core instr. ROMs */
+#define XCHAL_NUM_INSTRAM               0       /* number of core instr. RAMs */
+#define XCHAL_NUM_DATAROM               0       /* number of core data ROMs */
+#define XCHAL_NUM_DATARAM               0       /* number of core data RAMs */
+#define XCHAL_NUM_URAM                  0       /* number of core unified RAMs*/
+#define XCHAL_NUM_XLMI                  0       /* number of core XLMI ports */
+
+
+/*----------------------------------------------------------------------
+                        INTERRUPTS and TIMERS
+  ----------------------------------------------------------------------*/
+
+#define XCHAL_HAVE_INTERRUPTS           1       /* interrupt option */
+#define XCHAL_HAVE_HIGHPRI_INTERRUPTS   1       /* med/high-pri. interrupts */
+#define XCHAL_HAVE_NMI                  1       /* non-maskable interrupt */
+#define XCHAL_HAVE_CCOUNT               1       /* CCOUNT reg. (timer option) */
+#define XCHAL_NUM_TIMERS                3       /* number of CCOMPAREn regs */
+#define XCHAL_NUM_INTERRUPTS            22      /* number of interrupts */
+#define XCHAL_NUM_INTERRUPTS_LOG2       5       /* ceil(log2(NUM_INTERRUPTS)) */
+#define XCHAL_NUM_EXTINTERRUPTS         17      /* num of external interrupts */
+#define XCHAL_NUM_INTLEVELS             6       /* number of interrupt levels
+                                                   (not including level zero) */
+#define XCHAL_EXCM_LEVEL                3       /* level masked by PS.EXCM */
+        /* (always 1 in XEA1; levels 2 .. EXCM_LEVEL are "medium priority") */
+
+/*  Masks of interrupts at each interrupt level:  */
+#define XCHAL_INTLEVEL1_MASK            0x001F80FF
+#define XCHAL_INTLEVEL2_MASK            0x00000100
+#define XCHAL_INTLEVEL3_MASK            0x00200E00
+#define XCHAL_INTLEVEL4_MASK            0x00001000
+#define XCHAL_INTLEVEL5_MASK            0x00002000
+#define XCHAL_INTLEVEL6_MASK            0x00000000
+#define XCHAL_INTLEVEL7_MASK            0x00004000
+
+/*  Masks of interrupts at each range 1..n of interrupt levels:  */
+#define XCHAL_INTLEVEL1_ANDBELOW_MASK   0x001F80FF
+#define XCHAL_INTLEVEL2_ANDBELOW_MASK   0x001F81FF
+#define XCHAL_INTLEVEL3_ANDBELOW_MASK   0x003F8FFF
+#define XCHAL_INTLEVEL4_ANDBELOW_MASK   0x003F9FFF
+#define XCHAL_INTLEVEL5_ANDBELOW_MASK   0x003FBFFF
+#define XCHAL_INTLEVEL6_ANDBELOW_MASK   0x003FBFFF
+#define XCHAL_INTLEVEL7_ANDBELOW_MASK   0x003FFFFF
+
+/*  Level of each interrupt:  */
+#define XCHAL_INT0_LEVEL                1
+#define XCHAL_INT1_LEVEL                1
+#define XCHAL_INT2_LEVEL                1
+#define XCHAL_INT3_LEVEL                1
+#define XCHAL_INT4_LEVEL                1
+#define XCHAL_INT5_LEVEL                1
+#define XCHAL_INT6_LEVEL                1
+#define XCHAL_INT7_LEVEL                1
+#define XCHAL_INT8_LEVEL                2
+#define XCHAL_INT9_LEVEL                3
+#define XCHAL_INT10_LEVEL               3
+#define XCHAL_INT11_LEVEL               3
+#define XCHAL_INT12_LEVEL               4
+#define XCHAL_INT13_LEVEL               5
+#define XCHAL_INT14_LEVEL               7
+#define XCHAL_INT15_LEVEL               1
+#define XCHAL_INT16_LEVEL               1
+#define XCHAL_INT17_LEVEL               1
+#define XCHAL_INT18_LEVEL               1
+#define XCHAL_INT19_LEVEL               1
+#define XCHAL_INT20_LEVEL               1
+#define XCHAL_INT21_LEVEL               3
+#define XCHAL_DEBUGLEVEL                6       /* debug interrupt level */
+#define XCHAL_HAVE_DEBUG_EXTERN_INT     1       /* OCD external db interrupt */
+#define XCHAL_NMILEVEL                  7       /* NMI "level" (for use with
+                                                   EXCSAVE/EPS/EPC_n, RFI n) */
+
+/*  Type of each interrupt:  */
+#define XCHAL_INT0_TYPE         XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT1_TYPE         XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT2_TYPE         XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT3_TYPE         XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT4_TYPE         XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT5_TYPE         XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT6_TYPE         XTHAL_INTTYPE_TIMER
+#define XCHAL_INT7_TYPE         XTHAL_INTTYPE_SOFTWARE
+#define XCHAL_INT8_TYPE         XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT9_TYPE         XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT10_TYPE        XTHAL_INTTYPE_TIMER
+#define XCHAL_INT11_TYPE        XTHAL_INTTYPE_SOFTWARE
+#define XCHAL_INT12_TYPE        XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT13_TYPE        XTHAL_INTTYPE_TIMER
+#define XCHAL_INT14_TYPE        XTHAL_INTTYPE_NMI
+#define XCHAL_INT15_TYPE        XTHAL_INTTYPE_EXTERN_EDGE
+#define XCHAL_INT16_TYPE        XTHAL_INTTYPE_EXTERN_EDGE
+#define XCHAL_INT17_TYPE        XTHAL_INTTYPE_EXTERN_EDGE
+#define XCHAL_INT18_TYPE        XTHAL_INTTYPE_EXTERN_EDGE
+#define XCHAL_INT19_TYPE        XTHAL_INTTYPE_EXTERN_EDGE
+#define XCHAL_INT20_TYPE        XTHAL_INTTYPE_EXTERN_EDGE
+#define XCHAL_INT21_TYPE        XTHAL_INTTYPE_EXTERN_EDGE
+
+/*  Masks of interrupts for each type of interrupt:  */
+#define XCHAL_INTTYPE_MASK_UNCONFIGURED 0xFFC00000
+#define XCHAL_INTTYPE_MASK_SOFTWARE     0x00000880
+#define XCHAL_INTTYPE_MASK_EXTERN_EDGE  0x003F8000
+#define XCHAL_INTTYPE_MASK_EXTERN_LEVEL 0x0000133F
+#define XCHAL_INTTYPE_MASK_TIMER        0x00002440
+#define XCHAL_INTTYPE_MASK_NMI          0x00004000
+#define XCHAL_INTTYPE_MASK_WRITE_ERROR  0x00000000
+
+/*  Interrupt numbers assigned to specific interrupt sources:  */
+#define XCHAL_TIMER0_INTERRUPT          6       /* CCOMPARE0 */
+#define XCHAL_TIMER1_INTERRUPT          10      /* CCOMPARE1 */
+#define XCHAL_TIMER2_INTERRUPT          13      /* CCOMPARE2 */
+#define XCHAL_TIMER3_INTERRUPT          XTHAL_TIMER_UNCONFIGURED
+#define XCHAL_NMI_INTERRUPT             14      /* non-maskable interrupt */
+
+/*  Interrupt numbers for levels at which only one interrupt is configured:  */
+#define XCHAL_INTLEVEL2_NUM             8
+#define XCHAL_INTLEVEL4_NUM             12
+#define XCHAL_INTLEVEL5_NUM             13
+#define XCHAL_INTLEVEL7_NUM             14
+/*  (There are many interrupts each at level(s) 1, 3.)  */
+
+
+/*
+ *  External interrupt vectors/levels.
+ *  These macros describe how Xtensa processor interrupt numbers
+ *  (as numbered internally, eg. in INTERRUPT and INTENABLE registers)
+ *  map to external BInterrupt<n> pins, for those interrupts
+ *  configured as external (level-triggered, edge-triggered, or NMI).
+ *  See the Xtensa processor databook for more details.
+ */
+
+/*  Core interrupt numbers mapped to each EXTERNAL interrupt number:  */
+#define XCHAL_EXTINT0_NUM               0       /* (intlevel 1) */
+#define XCHAL_EXTINT1_NUM               1       /* (intlevel 1) */
+#define XCHAL_EXTINT2_NUM               2       /* (intlevel 1) */
+#define XCHAL_EXTINT3_NUM               3       /* (intlevel 1) */
+#define XCHAL_EXTINT4_NUM               4       /* (intlevel 1) */
+#define XCHAL_EXTINT5_NUM               5       /* (intlevel 1) */
+#define XCHAL_EXTINT6_NUM               8       /* (intlevel 2) */
+#define XCHAL_EXTINT7_NUM               9       /* (intlevel 3) */
+#define XCHAL_EXTINT8_NUM               12      /* (intlevel 4) */
+#define XCHAL_EXTINT9_NUM               14      /* (intlevel 7) */
+#define XCHAL_EXTINT10_NUM              15      /* (intlevel 1) */
+#define XCHAL_EXTINT11_NUM              16      /* (intlevel 1) */
+#define XCHAL_EXTINT12_NUM              17      /* (intlevel 1) */
+#define XCHAL_EXTINT13_NUM              18      /* (intlevel 1) */
+#define XCHAL_EXTINT14_NUM              19      /* (intlevel 1) */
+#define XCHAL_EXTINT15_NUM              20      /* (intlevel 1) */
+#define XCHAL_EXTINT16_NUM              21      /* (intlevel 3) */
+
+
+/*----------------------------------------------------------------------
+                        EXCEPTIONS and VECTORS
+  ----------------------------------------------------------------------*/
+
+#define XCHAL_XEA_VERSION               2       /* Xtensa Exception Architecture
+                                                   number: 1 == XEA1 (old)
+                                                           2 == XEA2 (new)
+                                                           0 == XEAX (extern) */
+#define XCHAL_HAVE_XEA1                 0       /* Exception Architecture 1 */
+#define XCHAL_HAVE_XEA2                 1       /* Exception Architecture 2 */
+#define XCHAL_HAVE_XEAX                 0       /* External Exception Arch. */
+#define XCHAL_HAVE_EXCEPTIONS           1       /* exception option */
+#define XCHAL_HAVE_MEM_ECC_PARITY       0       /* local memory ECC/parity */
+#define XCHAL_HAVE_VECTOR_SELECT        1       /* relocatable vectors */
+#define XCHAL_HAVE_VECBASE              1       /* relocatable vectors */
+#define XCHAL_VECBASE_RESET_VADDR       0xD0000000  /* VECBASE reset value */
+#define XCHAL_VECBASE_RESET_PADDR       0x00000000
+#define XCHAL_RESET_VECBASE_OVERLAP     0
+
+#define XCHAL_RESET_VECTOR0_VADDR       0xFE000000
+#define XCHAL_RESET_VECTOR0_PADDR       0xFE000000
+#define XCHAL_RESET_VECTOR1_VADDR       0xD8000500
+#define XCHAL_RESET_VECTOR1_PADDR       0x00000500
+#define XCHAL_RESET_VECTOR_VADDR        0xFE000000
+#define XCHAL_RESET_VECTOR_PADDR        0xFE000000
+#define XCHAL_USER_VECOFS               0x00000340
+#define XCHAL_USER_VECTOR_VADDR         0xD0000340
+#define XCHAL_USER_VECTOR_PADDR         0x00000340
+#define XCHAL_KERNEL_VECOFS             0x00000300
+#define XCHAL_KERNEL_VECTOR_VADDR       0xD0000300
+#define XCHAL_KERNEL_VECTOR_PADDR       0x00000300
+#define XCHAL_DOUBLEEXC_VECOFS          0x000003C0
+#define XCHAL_DOUBLEEXC_VECTOR_VADDR    0xD00003C0
+#define XCHAL_DOUBLEEXC_VECTOR_PADDR    0x000003C0
+#define XCHAL_WINDOW_OF4_VECOFS         0x00000000
+#define XCHAL_WINDOW_UF4_VECOFS         0x00000040
+#define XCHAL_WINDOW_OF8_VECOFS         0x00000080
+#define XCHAL_WINDOW_UF8_VECOFS         0x000000C0
+#define XCHAL_WINDOW_OF12_VECOFS        0x00000100
+#define XCHAL_WINDOW_UF12_VECOFS        0x00000140
+#define XCHAL_WINDOW_VECTORS_VADDR      0xD0000000
+#define XCHAL_WINDOW_VECTORS_PADDR      0x00000000
+#define XCHAL_INTLEVEL2_VECOFS          0x00000180
+#define XCHAL_INTLEVEL2_VECTOR_VADDR    0xD0000180
+#define XCHAL_INTLEVEL2_VECTOR_PADDR    0x00000180
+#define XCHAL_INTLEVEL3_VECOFS          0x000001C0
+#define XCHAL_INTLEVEL3_VECTOR_VADDR    0xD00001C0
+#define XCHAL_INTLEVEL3_VECTOR_PADDR    0x000001C0
+#define XCHAL_INTLEVEL4_VECOFS          0x00000200
+#define XCHAL_INTLEVEL4_VECTOR_VADDR    0xD0000200
+#define XCHAL_INTLEVEL4_VECTOR_PADDR    0x00000200
+#define XCHAL_INTLEVEL5_VECOFS          0x00000240
+#define XCHAL_INTLEVEL5_VECTOR_VADDR    0xD0000240
+#define XCHAL_INTLEVEL5_VECTOR_PADDR    0x00000240
+#define XCHAL_INTLEVEL6_VECOFS          0x00000280
+#define XCHAL_INTLEVEL6_VECTOR_VADDR    0xD0000280
+#define XCHAL_INTLEVEL6_VECTOR_PADDR    0x00000280
+#define XCHAL_DEBUG_VECOFS              XCHAL_INTLEVEL6_VECOFS
+#define XCHAL_DEBUG_VECTOR_VADDR        XCHAL_INTLEVEL6_VECTOR_VADDR
+#define XCHAL_DEBUG_VECTOR_PADDR        XCHAL_INTLEVEL6_VECTOR_PADDR
+#define XCHAL_NMI_VECOFS                0x000002C0
+#define XCHAL_NMI_VECTOR_VADDR          0xD00002C0
+#define XCHAL_NMI_VECTOR_PADDR          0x000002C0
+#define XCHAL_INTLEVEL7_VECOFS          XCHAL_NMI_VECOFS
+#define XCHAL_INTLEVEL7_VECTOR_VADDR    XCHAL_NMI_VECTOR_VADDR
+#define XCHAL_INTLEVEL7_VECTOR_PADDR    XCHAL_NMI_VECTOR_PADDR
+
+
+/*----------------------------------------------------------------------
+                                DEBUG
+  ----------------------------------------------------------------------*/
+
+#define XCHAL_HAVE_OCD                  1       /* OnChipDebug option */
+#define XCHAL_NUM_IBREAK                2       /* number of IBREAKn regs */
+#define XCHAL_NUM_DBREAK                2       /* number of DBREAKn regs */
+#define XCHAL_HAVE_OCD_DIR_ARRAY        1       /* faster OCD option */
+
+
+/*----------------------------------------------------------------------
+                                MMU
+  ----------------------------------------------------------------------*/
+
+/*  See core-matmap.h header file for more details.  */
+
+#define XCHAL_HAVE_TLBS                 1       /* inverse of HAVE_CACHEATTR */
+#define XCHAL_HAVE_SPANNING_WAY         0       /* one way maps I+D 4GB vaddr */
+#define XCHAL_HAVE_IDENTITY_MAP         0       /* vaddr == paddr always */
+#define XCHAL_HAVE_CACHEATTR            0       /* CACHEATTR register present */
+#define XCHAL_HAVE_MIMIC_CACHEATTR      0       /* region protection */
+#define XCHAL_HAVE_XLT_CACHEATTR        0       /* region prot. w/translation */
+#define XCHAL_HAVE_PTP_MMU              1       /* full MMU (with page table
+                                                   [autorefill] and protection)
+                                                   usable for an MMU-based OS */
+/*  If none of the above last 4 are set, it's a custom TLB configuration.  */
+#define XCHAL_ITLB_ARF_ENTRIES_LOG2     2       /* log2(autorefill way size) */
+#define XCHAL_DTLB_ARF_ENTRIES_LOG2     2       /* log2(autorefill way size) */
+
+#define XCHAL_MMU_ASID_BITS             8       /* number of bits in ASIDs */
+#define XCHAL_MMU_RINGS                 4       /* number of rings (1..4) */
+#define XCHAL_MMU_RING_BITS             2       /* num of bits in RING field */
+
+#endif /* !XTENSA_HAL_NON_PRIVILEGED_ONLY */
+
+
+#endif /* _XTENSA_CORE_CONFIGURATION_H */
+
diff --git a/include/asm-xtensa/variant-dc232b/tie-asm.h b/include/asm-xtensa/variant-dc232b/tie-asm.h
new file mode 100644
index 000000000000..ed4f53f529db
--- /dev/null
+++ b/include/asm-xtensa/variant-dc232b/tie-asm.h
@@ -0,0 +1,122 @@
+/*
+ * This header file contains assembly-language definitions (assembly
+ * macros, etc.) for this specific Xtensa processor's TIE extensions
+ * and options.  It is customized to this Xtensa processor configuration.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1999-2007 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_CORE_TIE_ASM_H
+#define _XTENSA_CORE_TIE_ASM_H
+
+/*  Selection parameter values for save-area save/restore macros:  */
+/*  Option vs. TIE:  */
+#define XTHAL_SAS_TIE   0x0001  /* custom extension or coprocessor */
+#define XTHAL_SAS_OPT   0x0002  /* optional (and not a coprocessor) */
+/*  Whether used automatically by compiler:  */
+#define XTHAL_SAS_NOCC  0x0004  /* not used by compiler w/o special opts/code */
+#define XTHAL_SAS_CC    0x0008  /* used by compiler without special opts/code */
+/*  ABI handling across function calls:  */
+#define XTHAL_SAS_CALR  0x0010  /* caller-saved */
+#define XTHAL_SAS_CALE  0x0020  /* callee-saved */
+#define XTHAL_SAS_GLOB  0x0040  /* global across function calls (in thread) */
+/*  Misc  */
+#define XTHAL_SAS_ALL   0xFFFF  /* include all default NCP contents */
+
+
+
+/* Macro to save all non-coprocessor (extra) custom TIE and optional state
+ * (not including zero-overhead loop registers).
+ * Save area ptr (clobbered):  ptr  (1 byte aligned)
+ * Scratch regs  (clobbered):  at1..at4  (only first XCHAL_NCP_NUM_ATMPS needed)
+ */
+        .macro xchal_ncp_store  ptr at1 at2 at3 at4  continue=0 ofs=-1 select=XTHAL_SAS_ALL
+        xchal_sa_start  \continue, \ofs
+        .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_CALR) & ~\select
+        xchal_sa_align  \ptr, 0, 1024-8, 4, 4
+        rsr     \at1, ACCLO             // MAC16 accumulator
+        rsr     \at2, ACCHI
+        s32i    \at1, \ptr, .Lxchal_ofs_ + 0
+        s32i    \at2, \ptr, .Lxchal_ofs_ + 4
+        .set    .Lxchal_ofs_, .Lxchal_ofs_ + 8
+        .endif
+        .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select
+        xchal_sa_align  \ptr, 0, 1024-16, 4, 4
+        rsr     \at1, M0                // MAC16 registers
+        rsr     \at2, M1
+        s32i    \at1, \ptr, .Lxchal_ofs_ + 0
+        s32i    \at2, \ptr, .Lxchal_ofs_ + 4
+        rsr     \at1, M2
+        rsr     \at2, M3
+        s32i    \at1, \ptr, .Lxchal_ofs_ + 8
+        s32i    \at2, \ptr, .Lxchal_ofs_ + 12
+        .set    .Lxchal_ofs_, .Lxchal_ofs_ + 16
+        .endif
+        .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select
+        xchal_sa_align  \ptr, 0, 1024-4, 4, 4
+        rsr     \at1, SCOMPARE1         // conditional store option
+        s32i    \at1, \ptr, .Lxchal_ofs_ + 0
+        .set    .Lxchal_ofs_, .Lxchal_ofs_ + 4
+        .endif
+        .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_GLOB) & ~\select
+        xchal_sa_align  \ptr, 0, 1024-4, 4, 4
+        rur     \at1, THREADPTR         // threadptr option
+        s32i    \at1, \ptr, .Lxchal_ofs_ + 0
+        .set    .Lxchal_ofs_, .Lxchal_ofs_ + 4
+        .endif
+        .endm   // xchal_ncp_store
+
+/* Macro to save all non-coprocessor (extra) custom TIE and optional state
+ * (not including zero-overhead loop registers).
+ * Save area ptr (clobbered):  ptr  (1 byte aligned)
+ * Scratch regs  (clobbered):  at1..at4  (only first XCHAL_NCP_NUM_ATMPS needed)
+ */
+        .macro xchal_ncp_load  ptr at1 at2 at3 at4  continue=0 ofs=-1 select=XTHAL_SAS_ALL
+        xchal_sa_start  \continue, \ofs
+        .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_CALR) & ~\select
+        xchal_sa_align  \ptr, 0, 1024-8, 4, 4
+        l32i    \at1, \ptr, .Lxchal_ofs_ + 0
+        l32i    \at2, \ptr, .Lxchal_ofs_ + 4
+        wsr     \at1, ACCLO             // MAC16 accumulator
+        wsr     \at2, ACCHI
+        .set    .Lxchal_ofs_, .Lxchal_ofs_ + 8
+        .endif
+        .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select
+        xchal_sa_align  \ptr, 0, 1024-16, 4, 4
+        l32i    \at1, \ptr, .Lxchal_ofs_ + 0
+        l32i    \at2, \ptr, .Lxchal_ofs_ + 4
+        wsr     \at1, M0                // MAC16 registers
+        wsr     \at2, M1
+        l32i    \at1, \ptr, .Lxchal_ofs_ + 8
+        l32i    \at2, \ptr, .Lxchal_ofs_ + 12
+        wsr     \at1, M2
+        wsr     \at2, M3
+        .set    .Lxchal_ofs_, .Lxchal_ofs_ + 16
+        .endif
+        .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select
+        xchal_sa_align  \ptr, 0, 1024-4, 4, 4
+        l32i    \at1, \ptr, .Lxchal_ofs_ + 0
+        wsr     \at1, SCOMPARE1         // conditional store option
+        .set    .Lxchal_ofs_, .Lxchal_ofs_ + 4
+        .endif
+        .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_GLOB) & ~\select
+        xchal_sa_align  \ptr, 0, 1024-4, 4, 4
+        l32i    \at1, \ptr, .Lxchal_ofs_ + 0
+        wur     \at1, THREADPTR         // threadptr option
+        .set    .Lxchal_ofs_, .Lxchal_ofs_ + 4
+        .endif
+        .endm   // xchal_ncp_load
+
+
+
+#define XCHAL_NCP_NUM_ATMPS     2
+
+
+#define XCHAL_SA_NUM_ATMPS      2
+
+#endif /*_XTENSA_CORE_TIE_ASM_H*/
+
diff --git a/include/asm-xtensa/variant-dc232b/tie.h b/include/asm-xtensa/variant-dc232b/tie.h
new file mode 100644
index 000000000000..018e81af4393
--- /dev/null
+++ b/include/asm-xtensa/variant-dc232b/tie.h
@@ -0,0 +1,131 @@
+/*
+ * This header file describes this specific Xtensa processor's TIE extensions
+ * that extend basic Xtensa core functionality.  It is customized to this
+ * Xtensa processor configuration.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1999-2007 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_CORE_TIE_H
+#define _XTENSA_CORE_TIE_H
+
+#define XCHAL_CP_NUM                    1       /* number of coprocessors */
+#define XCHAL_CP_MAX                    8       /* max CP ID + 1 (0 if none) */
+#define XCHAL_CP_MASK                   0x80    /* bitmask of all CPs by ID */
+#define XCHAL_CP_PORT_MASK              0x80    /* bitmask of only port CPs */
+
+/*  Basic parameters of each coprocessor:  */
+#define XCHAL_CP7_NAME                  "XTIOP"
+#define XCHAL_CP7_IDENT                 XTIOP
+#define XCHAL_CP7_SA_SIZE               0       /* size of state save area */
+#define XCHAL_CP7_SA_ALIGN              1       /* min alignment of save area */
+#define XCHAL_CP_ID_XTIOP               7       /* coprocessor ID (0..7) */
+
+/*  Filler info for unassigned coprocessors, to simplify arrays etc:  */
+#define XCHAL_CP0_SA_SIZE               0
+#define XCHAL_CP0_SA_ALIGN              1
+#define XCHAL_CP1_SA_SIZE               0
+#define XCHAL_CP1_SA_ALIGN              1
+#define XCHAL_CP2_SA_SIZE               0
+#define XCHAL_CP2_SA_ALIGN              1
+#define XCHAL_CP3_SA_SIZE               0
+#define XCHAL_CP3_SA_ALIGN              1
+#define XCHAL_CP4_SA_SIZE               0
+#define XCHAL_CP4_SA_ALIGN              1
+#define XCHAL_CP5_SA_SIZE               0
+#define XCHAL_CP5_SA_ALIGN              1
+#define XCHAL_CP6_SA_SIZE               0
+#define XCHAL_CP6_SA_ALIGN              1
+
+/*  Save area for non-coprocessor optional and custom (TIE) state:  */
+#define XCHAL_NCP_SA_SIZE               32
+#define XCHAL_NCP_SA_ALIGN              4
+
+/*  Total save area for optional and custom state (NCP + CPn):  */
+#define XCHAL_TOTAL_SA_SIZE             32      /* with 16-byte align padding */
+#define XCHAL_TOTAL_SA_ALIGN            4       /* actual minimum alignment */
+
+/*
+ * Detailed contents of save areas.
+ * NOTE:  caller must define the XCHAL_SA_REG macro (not defined here)
+ * before expanding the XCHAL_xxx_SA_LIST() macros.
+ *
+ * XCHAL_SA_REG(s,ccused,abikind,kind,opt,name,galign,align,asize,
+ *              dbnum,base,regnum,bitsz,gapsz,reset,x...)
+ *
+ *      s = passed from XCHAL_*_LIST(s), eg. to select how to expand
+ *      ccused = set if used by compiler without special options or code
+ *      abikind = 0 (caller-saved), 1 (callee-saved), or 2 (thread-global)
+ *      kind = 0 (special reg), 1 (TIE user reg), or 2 (TIE regfile reg)
+ *      opt = 0 (custom TIE extension or coprocessor), or 1 (optional reg)
+ *      name = lowercase reg name (no quotes)
+ *      galign = group byte alignment (power of 2) (galign >= align)
+ *      align = register byte alignment (power of 2)
+ *      asize = allocated size in bytes (asize*8 == bitsz + gapsz + padsz)
+ *        (not including any pad bytes required to galign this or next reg)
+ *      dbnum = unique target number f/debug (see <xtensa-libdb-macros.h>)
+ *      base = reg shortname w/o index (or sr=special, ur=TIE user reg)
+ *      regnum = reg index in regfile, or special/TIE-user reg number
+ *      bitsz = number of significant bits (regfile width, or ur/sr mask bits)
+ *      gapsz = intervening bits, if bitsz bits not stored contiguously
+ *      (padsz = pad bits at end [TIE regfile] or at msbits [ur,sr] of asize)
+ *      reset = register reset value (or 0 if undefined at reset)
+ *      x = reserved for future use (0 until then)
+ *
+ *  To filter out certain registers, e.g. to expand only the non-global
+ *  registers used by the compiler, you can do something like this:
+ *
+ *  #define XCHAL_SA_REG(s,ccused,p...) SELCC##ccused(p)
+ *  #define SELCC0(p...)
+ *  #define SELCC1(abikind,p...)        SELAK##abikind(p)
+ *  #define SELAK0(p...)                REG(p)
+ *  #define SELAK1(p...)                REG(p)
+ *  #define SELAK2(p...)
+ *  #define REG(kind,tie,name,galn,aln,asz,csz,dbnum,base,rnum,bsz,rst,x...) \
+ *              ...what you want to expand...
+ */
+
+#define XCHAL_NCP_SA_NUM        8
+#define XCHAL_NCP_SA_LIST(s)    \
+ XCHAL_SA_REG(s,1,0,0,1,          acclo, 4, 4, 4,0x0210,  sr,16 , 32,0,0,0) \
+ XCHAL_SA_REG(s,1,0,0,1,          acchi, 4, 4, 4,0x0211,  sr,17 ,  8,0,0,0) \
+ XCHAL_SA_REG(s,0,0,0,1,             m0, 4, 4, 4,0x0220,  sr,32 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,0,1,             m1, 4, 4, 4,0x0221,  sr,33 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,0,1,             m2, 4, 4, 4,0x0222,  sr,34 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,0,1,             m3, 4, 4, 4,0x0223,  sr,35 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,0,1,      scompare1, 4, 4, 4,0x020C,  sr,12 , 32,0,0,0) \
+ XCHAL_SA_REG(s,1,2,1,1,      threadptr, 4, 4, 4,0x03E7,  ur,231, 32,0,0,0)
+
+#define XCHAL_CP0_SA_NUM        0
+#define XCHAL_CP0_SA_LIST(s)    /* empty */
+
+#define XCHAL_CP1_SA_NUM        0
+#define XCHAL_CP1_SA_LIST(s)    /* empty */
+
+#define XCHAL_CP2_SA_NUM        0
+#define XCHAL_CP2_SA_LIST(s)    /* empty */
+
+#define XCHAL_CP3_SA_NUM        0
+#define XCHAL_CP3_SA_LIST(s)    /* empty */
+
+#define XCHAL_CP4_SA_NUM        0
+#define XCHAL_CP4_SA_LIST(s)    /* empty */
+
+#define XCHAL_CP5_SA_NUM        0
+#define XCHAL_CP5_SA_LIST(s)    /* empty */
+
+#define XCHAL_CP6_SA_NUM        0
+#define XCHAL_CP6_SA_LIST(s)    /* empty */
+
+#define XCHAL_CP7_SA_NUM        0
+#define XCHAL_CP7_SA_LIST(s)    /* empty */
+
+/* Byte length of instruction from its first nibble (op0 field), per FLIX.  */
+#define XCHAL_OP0_FORMAT_LENGTHS        3,3,3,3,3,3,3,3,2,2,2,2,2,2,3,3
+
+#endif /*_XTENSA_CORE_TIE_H*/
+
diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h
index 1abfe664c444..a08c33a26ca9 100644
--- a/include/linux/bitmap.h
+++ b/include/linux/bitmap.h
@@ -129,6 +129,7 @@ extern void bitmap_fold(unsigned long *dst, const unsigned long *orig,
 extern int bitmap_find_free_region(unsigned long *bitmap, int bits, int order);
 extern void bitmap_release_region(unsigned long *bitmap, int pos, int order);
 extern int bitmap_allocate_region(unsigned long *bitmap, int pos, int order);
+extern void bitmap_copy_le(void *dst, const unsigned long *src, int nbits);
 
 #define BITMAP_LAST_WORD_MASK(nbits)                                    \
 (                                                                       \
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index 08d783592b73..dfb30db475ed 100644
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -354,6 +354,9 @@ void *dm_vcalloc(unsigned long nmemb, unsigned long elem_size);
  */
 #define dm_round_up(n, sz) (dm_div_up((n), (sz)) * (sz))
 
+#define dm_array_too_big(fixed, obj, num) \
+        ((num) > (UINT_MAX - (fixed)) / (obj))
+
 static inline sector_t to_sector(unsigned long n)
 {
         return (n >> SECTOR_SHIFT);
diff --git a/include/linux/dm-region-hash.h b/include/linux/dm-region-hash.h
new file mode 100644
index 000000000000..a9e652a41373
--- /dev/null
+++ b/include/linux/dm-region-hash.h
@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) 2003 Sistina Software Limited.
+ * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
+ *
+ * Device-Mapper dirty region hash interface.
+ *
+ * This file is released under the GPL.
+ */
+
+#ifndef DM_REGION_HASH_H
+#define DM_REGION_HASH_H
+
+#include <linux/dm-dirty-log.h>
+
+/*-----------------------------------------------------------------
+ * Region hash
+ *----------------------------------------------------------------*/
+struct dm_region_hash;
+struct dm_region;
+
+/*
+ * States a region can have.
+ */
+enum dm_rh_region_states {
+        DM_RH_CLEAN      = 0x01,        /* No writes in flight. */
+        DM_RH_DIRTY      = 0x02,        /* Writes in flight. */
+        DM_RH_NOSYNC     = 0x04,        /* Out of sync. */
+        DM_RH_RECOVERING = 0x08,        /* Under resynchronization. */
+};
+
+/*
+ * Region hash create/destroy.
+ */
+struct bio_list;
+struct dm_region_hash *dm_region_hash_create(
+                void *context, void (*dispatch_bios)(void *context,
+                                                     struct bio_list *bios),
+                void (*wakeup_workers)(void *context),
+                void (*wakeup_all_recovery_waiters)(void *context),
+                sector_t target_begin, unsigned max_recovery,
+                struct dm_dirty_log *log, uint32_t region_size,
+                region_t nr_regions);
+void dm_region_hash_destroy(struct dm_region_hash *rh);
+
+struct dm_dirty_log *dm_rh_dirty_log(struct dm_region_hash *rh);
+
+/*
+ * Conversion functions.
+ */
+region_t dm_rh_bio_to_region(struct dm_region_hash *rh, struct bio *bio);
+sector_t dm_rh_region_to_sector(struct dm_region_hash *rh, region_t region);
+void *dm_rh_region_context(struct dm_region *reg);
+
+/*
+ * Get region size and key (ie. number of the region).
+ */
+sector_t dm_rh_get_region_size(struct dm_region_hash *rh);
+region_t dm_rh_get_region_key(struct dm_region *reg);
+
+/*
+ * Get/set/update region state (and dirty log).
+ *
+ */
+int dm_rh_get_state(struct dm_region_hash *rh, region_t region, int may_block);
+void dm_rh_set_state(struct dm_region_hash *rh, region_t region,
+                     enum dm_rh_region_states state, int may_block);
+
+/* Non-zero errors_handled leaves the state of the region NOSYNC */
+void dm_rh_update_states(struct dm_region_hash *rh, int errors_handled);
+
+/* Flush the region hash and dirty log. */
+int dm_rh_flush(struct dm_region_hash *rh);
+
+/* Inc/dec pending count on regions. */
+void dm_rh_inc_pending(struct dm_region_hash *rh, struct bio_list *bios);
+void dm_rh_dec(struct dm_region_hash *rh, region_t region);
+
+/* Delay bios on regions. */
+void dm_rh_delay(struct dm_region_hash *rh, struct bio *bio);
+
+void dm_rh_mark_nosync(struct dm_region_hash *rh,
+                       struct bio *bio, unsigned done, int error);
+
+/*
+ * Region recovery control.
+ */
+
+/* Prepare some regions for recovery by starting to quiesce them. */
+void dm_rh_recovery_prepare(struct dm_region_hash *rh);
+
+/* Try fetching a quiesced region for recovery. */
+struct dm_region *dm_rh_recovery_start(struct dm_region_hash *rh);
+
+/* Report recovery end on a region. */
+void dm_rh_recovery_end(struct dm_region *reg, int error);
+
+/* Returns number of regions with recovery work outstanding. */
+int dm_rh_recovery_in_flight(struct dm_region_hash *rh);
+
+/* Start/stop recovery. */
+void dm_rh_start_recovery(struct dm_region_hash *rh);
+void dm_rh_stop_recovery(struct dm_region_hash *rh);
+
+#endif /* DM_REGION_HASH_H */
diff --git a/include/linux/dma_remapping.h b/include/linux/dma_remapping.h
index bff5c65f81dc..952df39c989d 100644
--- a/include/linux/dma_remapping.h
+++ b/include/linux/dma_remapping.h
@@ -2,15 +2,14 @@
 #define _DMA_REMAPPING_H
 
 /*
- * We need a fixed PAGE_SIZE of 4K irrespective of
- * arch PAGE_SIZE for IOMMU page tables.
+ * VT-d hardware uses 4KiB page size regardless of host page size.
  */
-#define PAGE_SHIFT_4K           (12)
-#define PAGE_SIZE_4K            (1UL << PAGE_SHIFT_4K)
-#define PAGE_MASK_4K            (((u64)-1) << PAGE_SHIFT_4K)
-#define PAGE_ALIGN_4K(addr)     (((addr) + PAGE_SIZE_4K - 1) & PAGE_MASK_4K)
+#define VTD_PAGE_SHIFT          (12)
+#define VTD_PAGE_SIZE           (1UL << VTD_PAGE_SHIFT)
+#define VTD_PAGE_MASK           (((u64)-1) << VTD_PAGE_SHIFT)
+#define VTD_PAGE_ALIGN(addr)    (((addr) + VTD_PAGE_SIZE - 1) & VTD_PAGE_MASK)
 
-#define IOVA_PFN(addr)          ((addr) >> PAGE_SHIFT_4K)
+#define IOVA_PFN(addr)          ((addr) >> PAGE_SHIFT)
 #define DMA_32BIT_PFN           IOVA_PFN(DMA_32BIT_MASK)
 #define DMA_64BIT_PFN           IOVA_PFN(DMA_64BIT_MASK)
 
@@ -25,7 +24,7 @@ struct root_entry {
         u64     val;
         u64     rsvd1;
 };
-#define ROOT_ENTRY_NR (PAGE_SIZE_4K/sizeof(struct root_entry))
+#define ROOT_ENTRY_NR (VTD_PAGE_SIZE/sizeof(struct root_entry))
 static inline bool root_present(struct root_entry *root)
 {
         return (root->val & 1);
@@ -36,7 +35,7 @@ static inline void set_root_present(struct root_entry *root)
 }
 static inline void set_root_value(struct root_entry *root, unsigned long value)
 {
-        root->val |= value & PAGE_MASK_4K;
+        root->val |= value & VTD_PAGE_MASK;
 }
 
 struct context_entry;
@@ -45,7 +44,7 @@ get_context_addr_from_root(struct root_entry *root)
 {
         return (struct context_entry *)
                 (root_present(root)?phys_to_virt(
-                root->val & PAGE_MASK_4K):
+                root->val & VTD_PAGE_MASK) :
                 NULL);
 }
 
@@ -67,7 +66,7 @@ struct context_entry {
 #define context_present(c) ((c).lo & 1)
 #define context_fault_disable(c) (((c).lo >> 1) & 1)
 #define context_translation_type(c) (((c).lo >> 2) & 3)
-#define context_address_root(c) ((c).lo & PAGE_MASK_4K)
+#define context_address_root(c) ((c).lo & VTD_PAGE_MASK)
 #define context_address_width(c) ((c).hi &  7)
 #define context_domain_id(c) (((c).hi >> 8) & ((1 << 16) - 1))
 
@@ -81,7 +80,7 @@ struct context_entry {
         } while (0)
 #define CONTEXT_TT_MULTI_LEVEL 0
 #define context_set_address_root(c, val) \
-        do {(c).lo |= (val) & PAGE_MASK_4K;} while (0)
+        do {(c).lo |= (val) & VTD_PAGE_MASK; } while (0)
 #define context_set_address_width(c, val) do {(c).hi |= (val) & 7;} while (0)
 #define context_set_domain_id(c, val) \
         do {(c).hi |= ((val) & ((1 << 16) - 1)) << 8;} while (0)
@@ -107,9 +106,9 @@ struct dma_pte {
 #define dma_set_pte_writable(p) do {(p).val |= DMA_PTE_WRITE;} while (0)
 #define dma_set_pte_prot(p, prot) \
                 do {(p).val = ((p).val & ~3) | ((prot) & 3); } while (0)
-#define dma_pte_addr(p) ((p).val & PAGE_MASK_4K)
+#define dma_pte_addr(p) ((p).val & VTD_PAGE_MASK)
 #define dma_set_pte_addr(p, addr) do {\
-                (p).val |= ((addr) & PAGE_MASK_4K); } while (0)
+                (p).val |= ((addr) & VTD_PAGE_MASK); } while (0)
 #define dma_pte_present(p) (((p).val & 3) != 0)
 
 struct intel_iommu;
diff --git a/include/linux/i2c/twl4030.h b/include/linux/i2c/twl4030.h
index cdb453162a97..fb604dcd38f1 100644
--- a/include/linux/i2c/twl4030.h
+++ b/include/linux/i2c/twl4030.h
@@ -228,6 +228,12 @@ struct twl4030_gpio_platform_data {
         int             gpio_base;
         unsigned        irq_base, irq_end;
 
+        /* package the two LED signals as output-only GPIOs? */
+        bool            use_leds;
+
+        /* gpio-n should control VMMC(n+1) if BIT(n) in mmc_cd is set */
+        u8              mmc_cd;
+
         /* For gpio-N, bit (1 << N) in "pullups" is set if that pullup
          * should be enabled.  Else, if that bit is set in "pulldowns",
          * that pulldown is enabled.  Don't waste power by letting any
@@ -277,6 +283,8 @@ struct twl4030_platform_data {
 
 /*----------------------------------------------------------------------*/
 
+int twl4030_sih_setup(int module);
+
 /*
  * FIXME completely stop using TWL4030_IRQ_BASE ... instead, pass the
  * IRQ data to subsidiary devices using platform device resources.
@@ -291,16 +299,16 @@ struct twl4030_platform_data {
 #define TWL4030_MODIRQ_BCI              (TWL4030_IRQ_BASE + 2)
 #define TWL4030_MODIRQ_MADC             (TWL4030_IRQ_BASE + 3)
 /* #define TWL4030_MODIRQ_USB           (TWL4030_IRQ_BASE + 4) */
-#define TWL4030_MODIRQ_PWR              (TWL4030_IRQ_BASE + 5)
+/* #define TWL4030_MODIRQ_PWR           (TWL4030_IRQ_BASE + 5) */
 
 #define TWL4030_PWRIRQ_PWRBTN           (TWL4030_PWR_IRQ_BASE + 0)
-#define TWL4030_PWRIRQ_CHG_PRES         (TWL4030_PWR_IRQ_BASE + 1)
-#define TWL4030_PWRIRQ_USB_PRES         (TWL4030_PWR_IRQ_BASE + 2)
-#define TWL4030_PWRIRQ_RTC              (TWL4030_PWR_IRQ_BASE + 3)
-#define TWL4030_PWRIRQ_HOT_DIE          (TWL4030_PWR_IRQ_BASE + 4)
-#define TWL4030_PWRIRQ_PWROK_TIMEOUT    (TWL4030_PWR_IRQ_BASE + 5)
-#define TWL4030_PWRIRQ_MBCHG            (TWL4030_PWR_IRQ_BASE + 6)
-#define TWL4030_PWRIRQ_SC_DETECT        (TWL4030_PWR_IRQ_BASE + 7)
+/* #define TWL4030_PWRIRQ_CHG_PRES              (TWL4030_PWR_IRQ_BASE + 1) */
+/* #define TWL4030_PWRIRQ_USB_PRES              (TWL4030_PWR_IRQ_BASE + 2) */
+/* #define TWL4030_PWRIRQ_RTC           (TWL4030_PWR_IRQ_BASE + 3) */
+/* #define TWL4030_PWRIRQ_HOT_DIE               (TWL4030_PWR_IRQ_BASE + 4) */
+/* #define TWL4030_PWRIRQ_PWROK_TIMEOUT (TWL4030_PWR_IRQ_BASE + 5) */
+/* #define TWL4030_PWRIRQ_MBCHG         (TWL4030_PWR_IRQ_BASE + 6) */
+/* #define TWL4030_PWRIRQ_SC_DETECT     (TWL4030_PWR_IRQ_BASE + 7) */
 
 /* Rest are unsued currently*/
 
@@ -317,17 +325,13 @@ struct twl4030_platform_data {
 /* TWL4030 GPIO interrupt definitions */
 
 #define TWL4030_GPIO_IRQ_NO(n)          (TWL4030_GPIO_IRQ_BASE + (n))
-#define TWL4030_GPIO_IS_ENABLE          1
 
 /*
  * Exported TWL4030 GPIO APIs
  *
  * WARNING -- use standard GPIO and IRQ calls instead; these will vanish.
  */
-int twl4030_get_gpio_datain(int gpio);
-int twl4030_request_gpio(int gpio);
 int twl4030_set_gpio_debounce(int gpio, int enable);
-int twl4030_free_gpio(int gpio);
 
 #if defined(CONFIG_TWL4030_BCI_BATTERY) || \
         defined(CONFIG_TWL4030_BCI_BATTERY_MODULE)
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index 2e117f30a76c..3d017cfd245b 100644
--- a/include/linux/intel-iommu.h
+++ b/include/linux/intel-iommu.h
@@ -29,6 +29,7 @@
 #include <linux/io.h>
 #include <linux/dma_remapping.h>
 #include <asm/cacheflush.h>
+#include <asm/iommu.h>
 
 /*
  * Intel IOMMU register specification per version 1.0 public spec.
@@ -127,6 +128,7 @@ static inline void dmar_writeq(void __iomem *addr, u64 val)
 
 
 /* IOTLB_REG */
+#define DMA_TLB_FLUSH_GRANU_OFFSET  60
 #define DMA_TLB_GLOBAL_FLUSH (((u64)1) << 60)
 #define DMA_TLB_DSI_FLUSH (((u64)2) << 60)
 #define DMA_TLB_PSI_FLUSH (((u64)3) << 60)
@@ -140,6 +142,7 @@ static inline void dmar_writeq(void __iomem *addr, u64 val)
 #define DMA_TLB_MAX_SIZE (0x3f)
 
 /* INVALID_DESC */
+#define DMA_CCMD_INVL_GRANU_OFFSET  61
 #define DMA_ID_TLB_GLOBAL_FLUSH (((u64)1) << 3)
 #define DMA_ID_TLB_DSI_FLUSH    (((u64)2) << 3)
 #define DMA_ID_TLB_PSI_FLUSH    (((u64)3) << 3)
@@ -200,22 +203,21 @@ static inline void dmar_writeq(void __iomem *addr, u64 val)
 #define dma_frcd_type(d) ((d >> 30) & 1)
 #define dma_frcd_fault_reason(c) (c & 0xff)
 #define dma_frcd_source_id(c) (c & 0xffff)
-#define dma_frcd_page_addr(d) (d & (((u64)-1) << 12)) /* low 64 bit */
-
-#define DMAR_OPERATION_TIMEOUT ((cycles_t) tsc_khz*10*1000) /* 10sec */
-
-#define IOMMU_WAIT_OP(iommu, offset, op, cond, sts) \
-{\
-        cycles_t start_time = get_cycles();\
-        while (1) {\
-                sts = op (iommu->reg + offset);\
-                if (cond)\
-                        break;\
+/* low 64 bit */
+#define dma_frcd_page_addr(d) (d & (((u64)-1) << PAGE_SHIFT))
+
+#define IOMMU_WAIT_OP(iommu, offset, op, cond, sts)                     \
+do {                                                                    \
+        cycles_t start_time = get_cycles();                             \
+        while (1) {                                                     \
+                sts = op(iommu->reg + offset);                          \
+                if (cond)                                               \
+                        break;                                          \
                 if (DMAR_OPERATION_TIMEOUT < (get_cycles() - start_time))\
-                        panic("DMAR hardware is malfunctioning\n");\
-                cpu_relax();\
-        }\
-}
+                        panic("DMAR hardware is malfunctioning\n");     \
+                cpu_relax();                                            \
+        }                                                               \
+} while (0)
 
 #define QI_LENGTH       256     /* queue length */
 
@@ -238,6 +240,19 @@ enum {
 #define QI_IWD_STATUS_DATA(d)   (((u64)d) << 32)
 #define QI_IWD_STATUS_WRITE     (((u64)1) << 5)
 
+#define QI_IOTLB_DID(did)       (((u64)did) << 16)
+#define QI_IOTLB_DR(dr)         (((u64)dr) << 7)
+#define QI_IOTLB_DW(dw)         (((u64)dw) << 6)
+#define QI_IOTLB_GRAN(gran)     (((u64)gran) >> (DMA_TLB_FLUSH_GRANU_OFFSET-4))
+#define QI_IOTLB_ADDR(addr)     (((u64)addr) & VTD_PAGE_MASK)
+#define QI_IOTLB_IH(ih)         (((u64)ih) << 6)
+#define QI_IOTLB_AM(am)         (((u8)am))
+
+#define QI_CC_FM(fm)            (((u64)fm) << 48)
+#define QI_CC_SID(sid)          (((u64)sid) << 32)
+#define QI_CC_DID(did)          (((u64)did) << 16)
+#define QI_CC_GRAN(gran)        (((u64)gran) >> (DMA_CCMD_INVL_GRANU_OFFSET-4))
+
 struct qi_desc {
         u64 low, high;
 };
@@ -263,6 +278,13 @@ struct ir_table {
 };
 #endif
 
+struct iommu_flush {
+        int (*flush_context)(struct intel_iommu *iommu, u16 did, u16 sid, u8 fm,
+                u64 type, int non_present_entry_flush);
+        int (*flush_iotlb)(struct intel_iommu *iommu, u16 did, u64 addr,
+                unsigned int size_order, u64 type, int non_present_entry_flush);
+};
+
 struct intel_iommu {
         void __iomem    *reg; /* Pointer to hardware regs, virtual addr */
         u64             cap;
@@ -282,6 +304,7 @@ struct intel_iommu {
         unsigned char name[7];    /* Device Name */
         struct msi_msg saved_msg;
         struct sys_device sysdev;
+        struct iommu_flush flush;
 #endif
         struct q_inval  *qi;            /* Queued invalidation info */
 #ifdef CONFIG_INTR_REMAP
@@ -303,6 +326,12 @@ extern void free_iommu(struct intel_iommu *iommu);
 extern int dmar_enable_qi(struct intel_iommu *iommu);
 extern void qi_global_iec(struct intel_iommu *iommu);
 
+extern int qi_flush_context(struct intel_iommu *iommu, u16 did, u16 sid,
+                                u8 fm, u64 type, int non_present_entry_flush);
+extern int qi_flush_iotlb(struct intel_iommu *iommu, u16 did, u64 addr,
+                          unsigned int size_order, u64 type,
+                          int non_present_entry_flush);
+
 extern void qi_submit_sync(struct qi_desc *desc, struct intel_iommu *iommu);
 
 void intel_iommu_domain_exit(struct dmar_domain *domain);
@@ -324,4 +353,11 @@ static inline int intel_iommu_found(void)
 }
 #endif /* CONFIG_DMAR */
 
+extern void *intel_alloc_coherent(struct device *, size_t, dma_addr_t *, gfp_t);
+extern void intel_free_coherent(struct device *, size_t, void *, dma_addr_t);
+extern dma_addr_t intel_map_single(struct device *, phys_addr_t, size_t, int);
+extern void intel_unmap_single(struct device *, dma_addr_t, size_t, int);
+extern int intel_map_sg(struct device *, struct scatterlist *, int, int);
+extern void intel_unmap_sg(struct device *, struct scatterlist *, int, int);
+
 #endif
diff --git a/include/linux/irqnr.h b/include/linux/irqnr.h
index 3171ddc3b39d..452c280c8115 100644
--- a/include/linux/irqnr.h
+++ b/include/linux/irqnr.h
@@ -13,9 +13,9 @@ extern int nr_irqs;
 # define for_each_irq_desc(irq, desc)           \
         for (irq = 0, desc = irq_desc; irq < nr_irqs; irq++, desc++)
 
-# define for_each_irq_desc_reverse(irq, desc)                   \
-        for (irq = nr_irqs -1, desc = irq_desc + (nr_irqs -1 ); \
-             irq > 0; irq--, desc--)
+# define for_each_irq_desc_reverse(irq, desc)                           \
+        for (irq = nr_irqs - 1, desc = irq_desc + (nr_irqs - 1);        \
+             irq >= 0; irq--, desc--)
 #endif
 
 #define for_each_irq_nr(irq)                    \
diff --git a/include/linux/jbd.h b/include/linux/jbd.h
index 35d4f6342fac..346e2b80be7d 100644
--- a/include/linux/jbd.h
+++ b/include/linux/jbd.h
@@ -911,7 +911,7 @@ extern int	   journal_set_features
                    (journal_t *, unsigned long, unsigned long, unsigned long);
 extern int         journal_create     (journal_t *);
 extern int         journal_load       (journal_t *journal);
-extern void        journal_destroy    (journal_t *);
+extern int         journal_destroy    (journal_t *);
 extern int         journal_recover    (journal_t *journal);
 extern int         journal_wipe       (journal_t *, int);
 extern int         journal_skip_recovery        (journal_t *);
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 947cf84e555d..c261aa0584b1 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -340,6 +340,9 @@ enum {
 
         ATA_EHI_DID_RESET       = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET,
 
+        /* mask of flags to transfer *to* the slave link */
+        ATA_EHI_TO_SLAVE_MASK   = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET,
+
         /* max tries if error condition is still set after ->error_handler */
         ATA_EH_MAX_TRIES        = 5,
 
diff --git a/include/linux/mlx4/cmd.h b/include/linux/mlx4/cmd.h
index 77323a72dd3c..cf9c679ab38b 100644
--- a/include/linux/mlx4/cmd.h
+++ b/include/linux/mlx4/cmd.h
@@ -132,6 +132,15 @@ enum {
         MLX4_MAILBOX_SIZE       =  4096
 };
 
+enum {
+        /* set port opcode modifiers */
+        MLX4_SET_PORT_GENERAL   = 0x0,
+        MLX4_SET_PORT_RQP_CALC  = 0x1,
+        MLX4_SET_PORT_MAC_TABLE = 0x2,
+        MLX4_SET_PORT_VLAN_TABLE = 0x3,
+        MLX4_SET_PORT_PRIO_MAP  = 0x4,
+};
+
 struct mlx4_dev;
 
 struct mlx4_cmd_mailbox {
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index b2f944468313..bd9977b89490 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -60,6 +60,7 @@ enum {
         MLX4_DEV_CAP_FLAG_IPOIB_CSUM    = 1 <<  7,
         MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR = 1 <<  8,
         MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR = 1 <<  9,
+        MLX4_DEV_CAP_FLAG_DPDP          = 1 << 12,
         MLX4_DEV_CAP_FLAG_MEM_WINDOW    = 1 << 16,
         MLX4_DEV_CAP_FLAG_APM           = 1 << 17,
         MLX4_DEV_CAP_FLAG_ATOMIC        = 1 << 18,
@@ -145,6 +146,29 @@ enum {
         MLX4_MTT_FLAG_PRESENT           = 1
 };
 
+enum mlx4_qp_region {
+        MLX4_QP_REGION_FW = 0,
+        MLX4_QP_REGION_ETH_ADDR,
+        MLX4_QP_REGION_FC_ADDR,
+        MLX4_QP_REGION_FC_EXCH,
+        MLX4_NUM_QP_REGION
+};
+
+enum mlx4_port_type {
+        MLX4_PORT_TYPE_IB       = 1 << 0,
+        MLX4_PORT_TYPE_ETH      = 1 << 1,
+};
+
+enum mlx4_special_vlan_idx {
+        MLX4_NO_VLAN_IDX        = 0,
+        MLX4_VLAN_MISS_IDX,
+        MLX4_VLAN_REGULAR
+};
+
+enum {
+        MLX4_NUM_FEXCH          = 64 * 1024,
+};
+
 static inline u64 mlx4_fw_ver(u64 major, u64 minor, u64 subminor)
 {
         return (major << 32) | (minor << 16) | subminor;
@@ -154,7 +178,9 @@ struct mlx4_caps {
         u64                     fw_ver;
         int                     num_ports;
         int                     vl_cap[MLX4_MAX_PORTS + 1];
-        int                     mtu_cap[MLX4_MAX_PORTS + 1];
+        int                     ib_mtu_cap[MLX4_MAX_PORTS + 1];
+        u64                     def_mac[MLX4_MAX_PORTS + 1];
+        int                     eth_mtu_cap[MLX4_MAX_PORTS + 1];
         int                     gid_table_len[MLX4_MAX_PORTS + 1];
         int                     pkey_table_len[MLX4_MAX_PORTS + 1];
         int                     local_ca_ack_delay;
@@ -169,7 +195,6 @@ struct mlx4_caps {
         int                     max_rq_desc_sz;
         int                     max_qp_init_rdma;
         int                     max_qp_dest_rdma;
-        int                     reserved_qps;
         int                     sqp_start;
         int                     num_srqs;
         int                     max_srq_wqes;
@@ -201,6 +226,15 @@ struct mlx4_caps {
         u16                     stat_rate_support;
         u8                      port_width_cap[MLX4_MAX_PORTS + 1];
         int                     max_gso_sz;
+        int                     reserved_qps_cnt[MLX4_NUM_QP_REGION];
+        int                     reserved_qps;
+        int                     reserved_qps_base[MLX4_NUM_QP_REGION];
+        int                     log_num_macs;
+        int                     log_num_vlans;
+        int                     log_num_prios;
+        enum mlx4_port_type     port_type[MLX4_MAX_PORTS + 1];
+        u8                      supported_type[MLX4_MAX_PORTS + 1];
+        u32                     port_mask;
 };
 
 struct mlx4_buf_list {
@@ -355,6 +389,11 @@ struct mlx4_init_port_param {
         u64                     si_guid;
 };
 
+#define mlx4_foreach_port(port, dev, type)                              \
+        for ((port) = 1; (port) <= (dev)->caps.num_ports; (port)++)     \
+                if (((type) == MLX4_PORT_TYPE_IB ? (dev)->caps.port_mask : \
+                     ~(dev)->caps.port_mask) & 1 << ((port) - 1))
+
 int mlx4_buf_alloc(struct mlx4_dev *dev, int size, int max_direct,
                    struct mlx4_buf *buf);
 void mlx4_buf_free(struct mlx4_dev *dev, int size, struct mlx4_buf *buf);
@@ -400,7 +439,10 @@ int mlx4_cq_alloc(struct mlx4_dev *dev, int nent, struct mlx4_mtt *mtt,
                   int collapsed);
 void mlx4_cq_free(struct mlx4_dev *dev, struct mlx4_cq *cq);
 
-int mlx4_qp_alloc(struct mlx4_dev *dev, int sqpn, struct mlx4_qp *qp);
+int mlx4_qp_reserve_range(struct mlx4_dev *dev, int cnt, int align, int *base);
+void mlx4_qp_release_range(struct mlx4_dev *dev, int base_qpn, int cnt);
+
+int mlx4_qp_alloc(struct mlx4_dev *dev, int qpn, struct mlx4_qp *qp);
 void mlx4_qp_free(struct mlx4_dev *dev, struct mlx4_qp *qp);
 
 int mlx4_srq_alloc(struct mlx4_dev *dev, u32 pdn, struct mlx4_mtt *mtt,
@@ -416,6 +458,12 @@ int mlx4_multicast_attach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
                           int block_mcast_loopback);
 int mlx4_multicast_detach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16]);
 
+int mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac, int *index);
+void mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, int index);
+
+int mlx4_register_vlan(struct mlx4_dev *dev, u8 port, u16 vlan, int *index);
+void mlx4_unregister_vlan(struct mlx4_dev *dev, u8 port, int index);
+
 int mlx4_map_phys_fmr(struct mlx4_dev *dev, struct mlx4_fmr *fmr, u64 *page_list,
                       int npages, u64 iova, u32 *lkey, u32 *rkey);
 int mlx4_fmr_alloc(struct mlx4_dev *dev, u32 pd, u32 access, int max_pages,
diff --git a/include/linux/oprofile.h b/include/linux/oprofile.h
index bcb8f725427c..5231861f357d 100644
--- a/include/linux/oprofile.h
+++ b/include/linux/oprofile.h
@@ -86,13 +86,6 @@ int oprofile_arch_init(struct oprofile_operations * ops);
 void oprofile_arch_exit(void);
 
 /**
- * Add data to the event buffer.
- * The data passed is free-form, but typically consists of
- * file offsets, dcookies, context information, and ESCAPE codes.
- */
-void add_event_entry(unsigned long data);
-
-/**
  * Add a sample. This may be called from any context. Pass
  * smp_processor_id() as cpu.
  */
@@ -162,5 +155,14 @@ int oprofilefs_ulong_from_user(unsigned long * val, char const __user * buf, siz
 
 /** lock for read/write safety */
 extern spinlock_t oprofilefs_lock;
+
+/**
+ * Add the contents of a circular buffer to the event buffer.
+ */
+void oprofile_put_buff(unsigned long *buf, unsigned int start,
+                        unsigned int stop, unsigned int max);
+
+unsigned long oprofile_get_cpu_buffer_size(void);
+void oprofile_cpu_buffer_inc_smpl_lost(void);
  
 #endif /* OPROFILE_H */
diff --git a/include/linux/page_cgroup.h b/include/linux/page_cgroup.h
index 0fd39f2231ec..f546ad6fc028 100644
--- a/include/linux/page_cgroup.h
+++ b/include/linux/page_cgroup.h
@@ -99,5 +99,10 @@ static inline struct page_cgroup *lookup_page_cgroup(struct page *page)
 {
         return NULL;
 }
+
+static inline void page_cgroup_init(void)
+{
+}
+
 #endif
 #endif
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index e5d344bfcb7e..369f44286353 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -1944,6 +1944,14 @@
 
 #define PCI_VENDOR_ID_OXSEMI            0x1415
 #define PCI_DEVICE_ID_OXSEMI_12PCI840   0x8403
+#define PCI_DEVICE_ID_OXSEMI_PCIe840            0xC000
+#define PCI_DEVICE_ID_OXSEMI_PCIe840_G          0xC004
+#define PCI_DEVICE_ID_OXSEMI_PCIe952_0          0xC100
+#define PCI_DEVICE_ID_OXSEMI_PCIe952_0_G        0xC104
+#define PCI_DEVICE_ID_OXSEMI_PCIe952_1          0xC110
+#define PCI_DEVICE_ID_OXSEMI_PCIe952_1_G        0xC114
+#define PCI_DEVICE_ID_OXSEMI_PCIe952_1_U        0xC118
+#define PCI_DEVICE_ID_OXSEMI_PCIe952_1_GU       0xC11C
 #define PCI_DEVICE_ID_OXSEMI_16PCI954   0x9501
 #define PCI_DEVICE_ID_OXSEMI_16PCI95N   0x9511
 #define PCI_DEVICE_ID_OXSEMI_16PCI954PP 0x9513
diff --git a/include/linux/profile.h b/include/linux/profile.h
index 570045053ce9..a0fc32279fc0 100644
--- a/include/linux/profile.h
+++ b/include/linux/profile.h
@@ -19,10 +19,16 @@ struct notifier_block;
 
 #if defined(CONFIG_PROFILING) && defined(CONFIG_PROC_FS)
 void create_prof_cpu_mask(struct proc_dir_entry *de);
+int create_proc_profile(void);
 #else
 static inline void create_prof_cpu_mask(struct proc_dir_entry *de)
 {
 }
+
+static inline int create_proc_profile(void)
+{
+        return 0;
+}
 #endif
 
 enum profile_type {
@@ -37,7 +43,6 @@ extern int prof_on __read_mostly;
 /* init basic kernel profiler */
 int profile_init(void);
 int profile_setup(char *str);
-int create_proc_profile(void);
 void profile_tick(int type);
 
 /*
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 5c38db536e07..10bff55b0824 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -287,7 +287,6 @@ extern void trap_init(void);
 extern void account_process_tick(struct task_struct *task, int user);
 extern void update_process_times(int user);
 extern void scheduler_tick(void);
-extern void hrtick_resched(void);
 
 extern void sched_show_task(struct task_struct *p);
 
@@ -1665,6 +1664,7 @@ extern unsigned int sysctl_sched_features;
 extern unsigned int sysctl_sched_migration_cost;
 extern unsigned int sysctl_sched_nr_migrate;
 extern unsigned int sysctl_sched_shares_ratelimit;
+extern unsigned int sysctl_sched_shares_thresh;
 
 int sched_nr_latency_handler(struct ctl_table *table, int write,
                 struct file *file, void __user *buffer, size_t *length,
diff --git a/include/linux/usb/wusb-wa.h b/include/linux/usb/wusb-wa.h
new file mode 100644
index 000000000000..a102561e7026
--- /dev/null
+++ b/include/linux/usb/wusb-wa.h
@@ -0,0 +1,271 @@
+/*
+ * Wireless USB Wire Adapter constants and structures.
+ *
+ * Copyright (C) 2005-2006 Intel Corporation.
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ * FIXME: organize properly, group logically
+ *
+ * All the event structures are defined in uwb/spec.h, as they are
+ * common to the WHCI and WUSB radio control interfaces.
+ *
+ * References:
+ *   [WUSB] Wireless Universal Serial Bus Specification, revision 1.0, ch8
+ */
+#ifndef __LINUX_USB_WUSB_WA_H
+#define __LINUX_USB_WUSB_WA_H
+
+/**
+ * Radio Command Request for the Radio Control Interface
+ *
+ * Radio Control Interface command and event codes are the same as
+ * WHCI, and listed in include/linux/uwb.h:UWB_RC_{CMD,EVT}_*
+ */
+enum {
+        WA_EXEC_RC_CMD = 40,    /* Radio Control command Request */
+};
+
+/* Wireless Adapter Requests ([WUSB] table 8-51) */
+enum {
+        WUSB_REQ_ADD_MMC_IE     = 20,
+        WUSB_REQ_REMOVE_MMC_IE  = 21,
+        WUSB_REQ_SET_NUM_DNTS   = 22,
+        WUSB_REQ_SET_CLUSTER_ID = 23,
+        WUSB_REQ_SET_DEV_INFO   = 24,
+        WUSB_REQ_GET_TIME       = 25,
+        WUSB_REQ_SET_STREAM_IDX = 26,
+        WUSB_REQ_SET_WUSB_MAS   = 27,
+};
+
+
+/* Wireless Adapter WUSB Channel Time types ([WUSB] table 8-52) */
+enum {
+        WUSB_TIME_ADJ   = 0,
+        WUSB_TIME_BPST  = 1,
+        WUSB_TIME_WUSB  = 2,
+};
+
+enum {
+        WA_ENABLE = 0x01,
+        WA_RESET = 0x02,
+        RPIPE_PAUSE = 0x1,
+};
+
+/* Responses from Get Status request ([WUSB] section 8.3.1.6) */
+enum {
+        WA_STATUS_ENABLED = 0x01,
+        WA_STATUS_RESETTING = 0x02
+};
+
+enum rpipe_crs {
+        RPIPE_CRS_CTL = 0x01,
+        RPIPE_CRS_ISO = 0x02,
+        RPIPE_CRS_BULK = 0x04,
+        RPIPE_CRS_INTR = 0x08
+};
+
+/**
+ * RPipe descriptor ([WUSB] section 8.5.2.11)
+ *
+ * FIXME: explain rpipes
+ */
+struct usb_rpipe_descriptor {
+        u8      bLength;
+        u8      bDescriptorType;
+        __le16  wRPipeIndex;
+        __le16  wRequests;
+        __le16  wBlocks;                /* rw if 0 */
+        __le16  wMaxPacketSize;         /* rw? */
+        u8      bHSHubAddress;          /* reserved: 0 */
+        u8      bHSHubPort;             /* ??? FIXME ??? */
+        u8      bSpeed;                 /* rw: xfer rate 'enum uwb_phy_rate' */
+        u8      bDeviceAddress;         /* rw: Target device address */
+        u8      bEndpointAddress;       /* rw: Target EP address */
+        u8      bDataSequence;          /* ro: Current Data sequence */
+        __le32  dwCurrentWindow;        /* ro */
+        u8      bMaxDataSequence;       /* ro?: max supported seq */
+        u8      bInterval;              /* rw:  */
+        u8      bOverTheAirInterval;    /* rw:  */
+        u8      bmAttribute;            /* ro?  */
+        u8      bmCharacteristics;      /* ro? enum rpipe_attr, supported xsactions */
+        u8      bmRetryOptions;         /* rw? */
+        __le16  wNumTransactionErrors;  /* rw */
+} __attribute__ ((packed));
+
+/**
+ * Wire Adapter Notification types ([WUSB] sections 8.4.5 & 8.5.4)
+ *
+ * These are the notifications coming on the notification endpoint of
+ * an HWA and a DWA.
+ */
+enum wa_notif_type {
+        DWA_NOTIF_RWAKE = 0x91,
+        DWA_NOTIF_PORTSTATUS = 0x92,
+        WA_NOTIF_TRANSFER = 0x93,
+        HWA_NOTIF_BPST_ADJ = 0x94,
+        HWA_NOTIF_DN = 0x95,
+};
+
+/**
+ * Wire Adapter notification header
+ *
+ * Notifications coming from a wire adapter use a common header
+ * defined in [WUSB] sections 8.4.5 & 8.5.4.
+ */
+struct wa_notif_hdr {
+        u8 bLength;
+        u8 bNotifyType;                 /* enum wa_notif_type */
+} __attribute__((packed));
+
+/**
+ * HWA DN Received notification [(WUSB] section 8.5.4.2)
+ *
+ * The DNData is specified in WUSB1.0[7.6]. For each device
+ * notification we received, we just need to dispatch it.
+ *
+ * @dndata:  this is really an array of notifications, but all start
+ *           with the same header.
+ */
+struct hwa_notif_dn {
+        struct wa_notif_hdr hdr;
+        u8 bSourceDeviceAddr;           /* from errata 2005/07 */
+        u8 bmAttributes;
+        struct wusb_dn_hdr dndata[];
+} __attribute__((packed));
+
+/* [WUSB] section 8.3.3 */
+enum wa_xfer_type {
+        WA_XFER_TYPE_CTL = 0x80,
+        WA_XFER_TYPE_BI = 0x81,         /* bulk/interrupt */
+        WA_XFER_TYPE_ISO = 0x82,
+        WA_XFER_RESULT = 0x83,
+        WA_XFER_ABORT = 0x84,
+};
+
+/* [WUSB] section 8.3.3 */
+struct wa_xfer_hdr {
+        u8 bLength;                     /* 0x18 */
+        u8 bRequestType;                /* 0x80 WA_REQUEST_TYPE_CTL */
+        __le16 wRPipe;                  /* RPipe index */
+        __le32 dwTransferID;            /* Host-assigned ID */
+        __le32 dwTransferLength;        /* Length of data to xfer */
+        u8 bTransferSegment;
+} __attribute__((packed));
+
+struct wa_xfer_ctl {
+        struct wa_xfer_hdr hdr;
+        u8 bmAttribute;
+        __le16 wReserved;
+        struct usb_ctrlrequest baSetupData;
+} __attribute__((packed));
+
+struct wa_xfer_bi {
+        struct wa_xfer_hdr hdr;
+        u8 bReserved;
+        __le16 wReserved;
+} __attribute__((packed));
+
+struct wa_xfer_hwaiso {
+        struct wa_xfer_hdr hdr;
+        u8 bReserved;
+        __le16 wPresentationTime;
+        __le32 dwNumOfPackets;
+        /* FIXME: u8 pktdata[]? */
+} __attribute__((packed));
+
+/* [WUSB] section 8.3.3.5 */
+struct wa_xfer_abort {
+        u8 bLength;
+        u8 bRequestType;
+        __le16 wRPipe;                  /* RPipe index */
+        __le32 dwTransferID;            /* Host-assigned ID */
+} __attribute__((packed));
+
+/**
+ * WA Transfer Complete notification ([WUSB] section 8.3.3.3)
+ *
+ */
+struct wa_notif_xfer {
+        struct wa_notif_hdr hdr;
+        u8 bEndpoint;
+        u8 Reserved;
+} __attribute__((packed));
+
+/** Transfer result basic codes [WUSB] table 8-15 */
+enum {
+        WA_XFER_STATUS_SUCCESS,
+        WA_XFER_STATUS_HALTED,
+        WA_XFER_STATUS_DATA_BUFFER_ERROR,
+        WA_XFER_STATUS_BABBLE,
+        WA_XFER_RESERVED,
+        WA_XFER_STATUS_NOT_FOUND,
+        WA_XFER_STATUS_INSUFFICIENT_RESOURCE,
+        WA_XFER_STATUS_TRANSACTION_ERROR,
+        WA_XFER_STATUS_ABORTED,
+        WA_XFER_STATUS_RPIPE_NOT_READY,
+        WA_XFER_INVALID_FORMAT,
+        WA_XFER_UNEXPECTED_SEGMENT_NUMBER,
+        WA_XFER_STATUS_RPIPE_TYPE_MISMATCH,
+};
+
+/** [WUSB] section 8.3.3.4 */
+struct wa_xfer_result {
+        struct wa_notif_hdr hdr;
+        __le32 dwTransferID;
+        __le32 dwTransferLength;
+        u8     bTransferSegment;
+        u8     bTransferStatus;
+        __le32 dwNumOfPackets;
+} __attribute__((packed));
+
+/**
+ * Wire Adapter Class Descriptor ([WUSB] section 8.5.2.7).
+ *
+ * NOTE: u16 fields are read Little Endian from the hardware.
+ *
+ * @bNumPorts is the original max number of devices that the host can
+ *            connect; we might chop this so the stack can handle
+ *            it. In case you need to access it, use wusbhc->ports_max
+ *            if it is a Wireless USB WA.
+ */
+struct usb_wa_descriptor {
+        u8      bLength;
+        u8      bDescriptorType;
+        u16     bcdWAVersion;
+        u8      bNumPorts;              /* don't use!! */
+        u8      bmAttributes;           /* Reserved == 0 */
+        u16     wNumRPipes;
+        u16     wRPipeMaxBlock;
+        u8      bRPipeBlockSize;
+        u8      bPwrOn2PwrGood;
+        u8      bNumMMCIEs;
+        u8      DeviceRemovable;        /* FIXME: in DWA this is up to 16 bytes */
+} __attribute__((packed));
+
+/**
+ * HWA Device Information Buffer (WUSB1.0[T8.54])
+ */
+struct hwa_dev_info {
+        u8      bmDeviceAvailability[32];       /* FIXME: ignored for now */
+        u8      bDeviceAddress;
+        __le16  wPHYRates;
+        u8      bmDeviceAttribute;
+} __attribute__((packed));
+
+#endif /* #ifndef __LINUX_USB_WUSB_WA_H */
diff --git a/include/linux/usb/wusb.h b/include/linux/usb/wusb.h
new file mode 100644
index 000000000000..5f401b644ed5
--- /dev/null
+++ b/include/linux/usb/wusb.h
@@ -0,0 +1,376 @@
+/*
+ * Wireless USB Standard Definitions
+ * Event Size Tables
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ * FIXME: organize properly, group logically
+ *
+ * All the event structures are defined in uwb/spec.h, as they are
+ * common to the WHCI and WUSB radio control interfaces.
+ */
+
+#ifndef __WUSB_H__
+#define __WUSB_H__
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/uwb/spec.h>
+#include <linux/usb/ch9.h>
+#include <linux/param.h>
+
+/**
+ * WUSB Information Element header
+ *
+ * I don't know why, they decided to make it different to the MBOA MAC
+ * IE Header; beats me.
+ */
+struct wuie_hdr {
+        u8 bLength;
+        u8 bIEIdentifier;
+} __attribute__((packed));
+
+enum {
+        WUIE_ID_WCTA = 0x80,
+        WUIE_ID_CONNECTACK,
+        WUIE_ID_HOST_INFO,
+        WUIE_ID_CHANGE_ANNOUNCE,
+        WUIE_ID_DEVICE_DISCONNECT,
+        WUIE_ID_HOST_DISCONNECT,
+        WUIE_ID_KEEP_ALIVE = 0x89,
+        WUIE_ID_ISOCH_DISCARD,
+        WUIE_ID_RESET_DEVICE,
+};
+
+/**
+ * Maximum number of array elements in a WUSB IE.
+ *
+ * WUSB1.0[7.5 before table 7-38] says that in WUSB IEs that
+ * are "arrays" have to limited to 4 elements. So we define it
+ * like that to ease up and submit only the neeed size.
+ */
+#define WUIE_ELT_MAX 4
+
+/**
+ * Wrapper for the data that defines a CHID, a CDID or a CK
+ *
+ * WUSB defines that CHIDs, CDIDs and CKs are a 16 byte string of
+ * data. In order to avoid confusion and enforce types, we wrap it.
+ *
+ * Make it packed, as we use it in some hw defintions.
+ */
+struct wusb_ckhdid {
+        u8 data[16];
+} __attribute__((packed));
+
+const static
+struct wusb_ckhdid wusb_ckhdid_zero = { .data = { 0 } };
+
+#define WUSB_CKHDID_STRSIZE (3 * sizeof(struct wusb_ckhdid) + 1)
+
+/**
+ * WUSB IE: Host Information (WUSB1.0[7.5.2])
+ *
+ * Used to provide information about the host to the Wireless USB
+ * devices in range (CHID can be used as an ASCII string).
+ */
+struct wuie_host_info {
+        struct wuie_hdr hdr;
+        __le16 attributes;
+        struct wusb_ckhdid CHID;
+} __attribute__((packed));
+
+/**
+ * WUSB IE: Connect Ack (WUSB1.0[7.5.1])
+ *
+ * Used to acknowledge device connect requests. See note for
+ * WUIE_ELT_MAX.
+ */
+struct wuie_connect_ack {
+        struct wuie_hdr hdr;
+        struct {
+                struct wusb_ckhdid CDID;
+                u8 bDeviceAddress;      /* 0 means unused */
+                u8 bReserved;
+        } blk[WUIE_ELT_MAX];
+} __attribute__((packed));
+
+/**
+ * WUSB IE Host Information Element, Connect Availability
+ *
+ * WUSB1.0[7.5.2], bmAttributes description
+ */
+enum {
+        WUIE_HI_CAP_RECONNECT = 0,
+        WUIE_HI_CAP_LIMITED,
+        WUIE_HI_CAP_RESERVED,
+        WUIE_HI_CAP_ALL,
+};
+
+/**
+ * WUSB IE: Channel Stop (WUSB1.0[7.5.8])
+ *
+ * Tells devices the host is going to stop sending MMCs and will dissapear.
+ */
+struct wuie_channel_stop {
+        struct wuie_hdr hdr;
+        u8 attributes;
+        u8 timestamp[3];
+} __attribute__((packed));
+
+/**
+ * WUSB IE: Keepalive (WUSB1.0[7.5.9])
+ *
+ * Ask device(s) to send keepalives.
+ */
+struct wuie_keep_alive {
+        struct wuie_hdr hdr;
+        u8 bDeviceAddress[WUIE_ELT_MAX];
+} __attribute__((packed));
+
+/**
+ * WUSB IE: Reset device (WUSB1.0[7.5.11])
+ *
+ * Tell device to reset; in all truth, we can fit 4 CDIDs, but we only
+ * use it for one at the time...
+ *
+ * In any case, this request is a wee bit silly: why don't they target
+ * by address??
+ */
+struct wuie_reset {
+        struct wuie_hdr hdr;
+        struct wusb_ckhdid CDID;
+} __attribute__((packed));
+
+/**
+ * WUSB IE: Disconnect device (WUSB1.0[7.5.11])
+ *
+ * Tell device to disconnect; we can fit 4 addresses, but we only use
+ * it for one at the time...
+ */
+struct wuie_disconnect {
+        struct wuie_hdr hdr;
+        u8 bDeviceAddress;
+        u8 padding;
+} __attribute__((packed));
+
+/**
+ * WUSB IE: Host disconnect ([WUSB] section 7.5.5)
+ *
+ * Tells all connected devices to disconnect.
+ */
+struct wuie_host_disconnect {
+        struct wuie_hdr hdr;
+} __attribute__((packed));
+
+/**
+ * WUSB Device Notification header (WUSB1.0[7.6])
+ */
+struct wusb_dn_hdr {
+        u8 bType;
+        u8 notifdata[];
+} __attribute__((packed));
+
+/** Device Notification codes (WUSB1.0[Table 7-54]) */
+enum WUSB_DN {
+        WUSB_DN_CONNECT = 0x01,
+        WUSB_DN_DISCONNECT = 0x02,
+        WUSB_DN_EPRDY = 0x03,
+        WUSB_DN_MASAVAILCHANGED = 0x04,
+        WUSB_DN_RWAKE = 0x05,
+        WUSB_DN_SLEEP = 0x06,
+        WUSB_DN_ALIVE = 0x07,
+};
+
+/** WUSB Device Notification Connect */
+struct wusb_dn_connect {
+        struct wusb_dn_hdr hdr;
+        __le16 attributes;
+        struct wusb_ckhdid CDID;
+} __attribute__((packed));
+
+static inline int wusb_dn_connect_prev_dev_addr(const struct wusb_dn_connect *dn)
+{
+        return le16_to_cpu(dn->attributes) & 0xff;
+}
+
+static inline int wusb_dn_connect_new_connection(const struct wusb_dn_connect *dn)
+{
+        return (le16_to_cpu(dn->attributes) >> 8) & 0x1;
+}
+
+static inline int wusb_dn_connect_beacon_behavior(const struct wusb_dn_connect *dn)
+{
+        return (le16_to_cpu(dn->attributes) >> 9) & 0x03;
+}
+
+/** Device is alive (aka: pong) (WUSB1.0[7.6.7]) */
+struct wusb_dn_alive {
+        struct wusb_dn_hdr hdr;
+} __attribute__((packed));
+
+/** Device is disconnecting (WUSB1.0[7.6.2]) */
+struct wusb_dn_disconnect {
+        struct wusb_dn_hdr hdr;
+} __attribute__((packed));
+
+/* General constants */
+enum {
+        WUSB_TRUST_TIMEOUT_MS = 4000,   /* [WUSB] section 4.15.1 */
+};
+
+static inline size_t ckhdid_printf(char *pr_ckhdid, size_t size,
+                                   const struct wusb_ckhdid *ckhdid)
+{
+        return scnprintf(pr_ckhdid, size,
+                         "%02hx %02hx %02hx %02hx %02hx %02hx %02hx %02hx "
+                         "%02hx %02hx %02hx %02hx %02hx %02hx %02hx %02hx",
+                         ckhdid->data[0],  ckhdid->data[1],
+                         ckhdid->data[2],  ckhdid->data[3],
+                         ckhdid->data[4],  ckhdid->data[5],
+                         ckhdid->data[6],  ckhdid->data[7],
+                         ckhdid->data[8],  ckhdid->data[9],
+                         ckhdid->data[10], ckhdid->data[11],
+                         ckhdid->data[12], ckhdid->data[13],
+                         ckhdid->data[14], ckhdid->data[15]);
+}
+
+/*
+ * WUSB Crypto stuff (WUSB1.0[6])
+ */
+
+extern const char *wusb_et_name(u8);
+
+/**
+ * WUSB key index WUSB1.0[7.3.2.4], for usage when setting keys for
+ * the host or the device.
+ */
+static inline u8 wusb_key_index(int index, int type, int originator)
+{
+        return (originator << 6) | (type << 4) | index;
+}
+
+#define WUSB_KEY_INDEX_TYPE_PTK                 0 /* for HWA only */
+#define WUSB_KEY_INDEX_TYPE_ASSOC               1
+#define WUSB_KEY_INDEX_TYPE_GTK                 2
+#define WUSB_KEY_INDEX_ORIGINATOR_HOST          0
+#define WUSB_KEY_INDEX_ORIGINATOR_DEVICE        1
+
+/* A CCM Nonce, defined in WUSB1.0[6.4.1] */
+struct aes_ccm_nonce {
+        u8 sfn[6];              /* Little Endian */
+        u8 tkid[3];             /* LE */
+        struct uwb_dev_addr dest_addr;
+        struct uwb_dev_addr src_addr;
+} __attribute__((packed));
+
+/* A CCM operation label, defined on WUSB1.0[6.5.x] */
+struct aes_ccm_label {
+        u8 data[14];
+} __attribute__((packed));
+
+/*
+ * Input to the key derivation sequence defined in
+ * WUSB1.0[6.5.1]. Rest of the data is in the CCM Nonce passed to the
+ * PRF function.
+ */
+struct wusb_keydvt_in {
+        u8 hnonce[16];
+        u8 dnonce[16];
+} __attribute__((packed));
+
+/*
+ * Output from the key derivation sequence defined in
+ * WUSB1.0[6.5.1].
+ */
+struct wusb_keydvt_out {
+        u8 kck[16];
+        u8 ptk[16];
+} __attribute__((packed));
+
+/* Pseudo Random Function WUSB1.0[6.5] */
+extern int wusb_crypto_init(void);
+extern void wusb_crypto_exit(void);
+extern ssize_t wusb_prf(void *out, size_t out_size,
+                        const u8 key[16], const struct aes_ccm_nonce *_n,
+                        const struct aes_ccm_label *a,
+                        const void *b, size_t blen, size_t len);
+
+static inline int wusb_prf_64(void *out, size_t out_size, const u8 key[16],
+                              const struct aes_ccm_nonce *n,
+                              const struct aes_ccm_label *a,
+                              const void *b, size_t blen)
+{
+        return wusb_prf(out, out_size, key, n, a, b, blen, 64);
+}
+
+static inline int wusb_prf_128(void *out, size_t out_size, const u8 key[16],
+                               const struct aes_ccm_nonce *n,
+                               const struct aes_ccm_label *a,
+                               const void *b, size_t blen)
+{
+        return wusb_prf(out, out_size, key, n, a, b, blen, 128);
+}
+
+static inline int wusb_prf_256(void *out, size_t out_size, const u8 key[16],
+                               const struct aes_ccm_nonce *n,
+                               const struct aes_ccm_label *a,
+                               const void *b, size_t blen)
+{
+        return wusb_prf(out, out_size, key, n, a, b, blen, 256);
+}
+
+/* Key derivation WUSB1.0[6.5.1] */
+static inline int wusb_key_derive(struct wusb_keydvt_out *keydvt_out,
+                                  const u8 key[16],
+                                  const struct aes_ccm_nonce *n,
+                                  const struct wusb_keydvt_in *keydvt_in)
+{
+        const struct aes_ccm_label a = { .data = "Pair-wise keys" };
+        return wusb_prf_256(keydvt_out, sizeof(*keydvt_out), key, n, &a,
+                            keydvt_in, sizeof(*keydvt_in));
+}
+
+/*
+ * Out-of-band MIC Generation WUSB1.0[6.5.2]
+ *
+ * Compute the MIC over @key, @n and @hs and place it in @mic_out.
+ *
+ * @mic_out:  Where to place the 8 byte MIC tag
+ * @key:      KCK from the derivation process
+ * @n:        CCM nonce, n->sfn == 0, TKID as established in the
+ *            process.
+ * @hs:       Handshake struct for phase 2 of the 4-way.
+ *            hs->bStatus and hs->bReserved are zero.
+ *            hs->bMessageNumber is 2 (WUSB1.0[7.3.2.5.2]
+ *            hs->dest_addr is the device's USB address padded with 0
+ *            hs->src_addr is the hosts's UWB device address
+ *            hs->mic is ignored (as we compute that value).
+ */
+static inline int wusb_oob_mic(u8 mic_out[8], const u8 key[16],
+                               const struct aes_ccm_nonce *n,
+                               const struct usb_handshake *hs)
+{
+        const struct aes_ccm_label a = { .data = "out-of-bandMIC" };
+        return wusb_prf_64(mic_out, 8, key, n, &a,
+                           hs, sizeof(*hs) - sizeof(hs->MIC));
+}
+
+#endif /* #ifndef __WUSB_H__ */
diff --git a/include/linux/uwb.h b/include/linux/uwb.h
new file mode 100644
index 000000000000..f9ccbd9a2ced
--- /dev/null
+++ b/include/linux/uwb.h
@@ -0,0 +1,765 @@
+/*
+ * Ultra Wide Band
+ * UWB API
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: doc: overview of the API, different parts and pointers
+ */
+
+#ifndef __LINUX__UWB_H__
+#define __LINUX__UWB_H__
+
+#include <linux/limits.h>
+#include <linux/device.h>
+#include <linux/mutex.h>
+#include <linux/timer.h>
+#include <linux/workqueue.h>
+#include <linux/uwb/spec.h>
+
+struct uwb_dev;
+struct uwb_beca_e;
+struct uwb_rc;
+struct uwb_rsv;
+struct uwb_dbg;
+
+/**
+ * struct uwb_dev - a UWB Device
+ * @rc: UWB Radio Controller that discovered the device (kind of its
+ *     parent).
+ * @bce: a beacon cache entry for this device; or NULL if the device
+ *     is a local radio controller.
+ * @mac_addr: the EUI-48 address of this device.
+ * @dev_addr: the current DevAddr used by this device.
+ * @beacon_slot: the slot number the beacon is using.
+ * @streams: bitmap of streams allocated to reservations targeted at
+ *     this device.  For an RC, this is the streams allocated for
+ *     reservations targeted at DevAddrs.
+ *
+ * A UWB device may either by a neighbor or part of a local radio
+ * controller.
+ */
+struct uwb_dev {
+        struct mutex mutex;
+        struct list_head list_node;
+        struct device dev;
+        struct uwb_rc *rc;              /* radio controller */
+        struct uwb_beca_e *bce;         /* Beacon Cache Entry */
+
+        struct uwb_mac_addr mac_addr;
+        struct uwb_dev_addr dev_addr;
+        int beacon_slot;
+        DECLARE_BITMAP(streams, UWB_NUM_STREAMS);
+};
+#define to_uwb_dev(d) container_of(d, struct uwb_dev, dev)
+
+/**
+ * UWB HWA/WHCI Radio Control {Command|Event} Block context IDs
+ *
+ * RC[CE]Bs have a 'context ID' field that matches the command with
+ * the event received to confirm it.
+ *
+ * Maximum number of context IDs
+ */
+enum { UWB_RC_CTX_MAX = 256 };
+
+
+/** Notification chain head for UWB generated events to listeners */
+struct uwb_notifs_chain {
+        struct list_head list;
+        struct mutex mutex;
+};
+
+/**
+ * struct uwb_mas_bm - a bitmap of all MAS in a superframe
+ * @bm: a bitmap of length #UWB_NUM_MAS
+ */
+struct uwb_mas_bm {
+        DECLARE_BITMAP(bm, UWB_NUM_MAS);
+};
+
+/**
+ * uwb_rsv_state - UWB Reservation state.
+ *
+ * NONE - reservation is not active (no DRP IE being transmitted).
+ *
+ * Owner reservation states:
+ *
+ * INITIATED - owner has sent an initial DRP request.
+ * PENDING - target responded with pending Reason Code.
+ * MODIFIED - reservation manager is modifying an established
+ * reservation with a different MAS allocation.
+ * ESTABLISHED - the reservation has been successfully negotiated.
+ *
+ * Target reservation states:
+ *
+ * DENIED - request is denied.
+ * ACCEPTED - request is accepted.
+ * PENDING - PAL has yet to make a decision to whether to accept or
+ * deny.
+ *
+ * FIXME: further target states TBD.
+ */
+enum uwb_rsv_state {
+        UWB_RSV_STATE_NONE,
+        UWB_RSV_STATE_O_INITIATED,
+        UWB_RSV_STATE_O_PENDING,
+        UWB_RSV_STATE_O_MODIFIED,
+        UWB_RSV_STATE_O_ESTABLISHED,
+        UWB_RSV_STATE_T_ACCEPTED,
+        UWB_RSV_STATE_T_DENIED,
+        UWB_RSV_STATE_T_PENDING,
+
+        UWB_RSV_STATE_LAST,
+};
+
+enum uwb_rsv_target_type {
+        UWB_RSV_TARGET_DEV,
+        UWB_RSV_TARGET_DEVADDR,
+};
+
+/**
+ * struct uwb_rsv_target - the target of a reservation.
+ *
+ * Reservations unicast and targeted at a single device
+ * (UWB_RSV_TARGET_DEV); or (e.g., in the case of WUSB) targeted at a
+ * specific (private) DevAddr (UWB_RSV_TARGET_DEVADDR).
+ */
+struct uwb_rsv_target {
+        enum uwb_rsv_target_type type;
+        union {
+                struct uwb_dev *dev;
+                struct uwb_dev_addr devaddr;
+        };
+};
+
+/*
+ * Number of streams reserved for reservations targeted at DevAddrs.
+ */
+#define UWB_NUM_GLOBAL_STREAMS 1
+
+typedef void (*uwb_rsv_cb_f)(struct uwb_rsv *rsv);
+
+/**
+ * struct uwb_rsv - a DRP reservation
+ *
+ * Data structure management:
+ *
+ * @rc:             the radio controller this reservation is for
+ *                  (as target or owner)
+ * @rc_node:        a list node for the RC
+ * @pal_node:       a list node for the PAL
+ *
+ * Owner and target parameters:
+ *
+ * @owner:          the UWB device owning this reservation
+ * @target:         the target UWB device
+ * @type:           reservation type
+ *
+ * Owner parameters:
+ *
+ * @max_mas:        maxiumum number of MAS
+ * @min_mas:        minimum number of MAS
+ * @sparsity:       owner selected sparsity
+ * @is_multicast:   true iff multicast
+ *
+ * @callback:       callback function when the reservation completes
+ * @pal_priv:       private data for the PAL making the reservation
+ *
+ * Reservation status:
+ *
+ * @status:         negotiation status
+ * @stream:         stream index allocated for this reservation
+ * @mas:            reserved MAS
+ * @drp_ie:         the DRP IE
+ * @ie_valid:       true iff the DRP IE matches the reservation parameters
+ *
+ * DRP reservations are uniquely identified by the owner, target and
+ * stream index.  However, when using a DevAddr as a target (e.g., for
+ * a WUSB cluster reservation) the responses may be received from
+ * devices with different DevAddrs.  In this case, reservations are
+ * uniquely identified by just the stream index.  A number of stream
+ * indexes (UWB_NUM_GLOBAL_STREAMS) are reserved for this.
+ */
+struct uwb_rsv {
+        struct uwb_rc *rc;
+        struct list_head rc_node;
+        struct list_head pal_node;
+
+        struct uwb_dev *owner;
+        struct uwb_rsv_target target;
+        enum uwb_drp_type type;
+        int max_mas;
+        int min_mas;
+        int sparsity;
+        bool is_multicast;
+
+        uwb_rsv_cb_f callback;
+        void *pal_priv;
+
+        enum uwb_rsv_state state;
+        u8 stream;
+        struct uwb_mas_bm mas;
+        struct uwb_ie_drp *drp_ie;
+        bool ie_valid;
+        struct timer_list timer;
+        bool expired;
+};
+
+static const
+struct uwb_mas_bm uwb_mas_bm_zero = { .bm = { 0 } };
+
+static inline void uwb_mas_bm_copy_le(void *dst, const struct uwb_mas_bm *mas)
+{
+        bitmap_copy_le(dst, mas->bm, UWB_NUM_MAS);
+}
+
+/**
+ * struct uwb_drp_avail - a radio controller's view of MAS usage
+ * @global:   MAS unused by neighbors (excluding reservations targetted
+ *            or owned by the local radio controller) or the beaon period
+ * @local:    MAS unused by local established reservations
+ * @pending:  MAS unused by local pending reservations
+ * @ie:       DRP Availability IE to be included in the beacon
+ * @ie_valid: true iff @ie is valid and does not need to regenerated from
+ *            @global and @local
+ *
+ * Each radio controller maintains a view of MAS usage or
+ * availability. MAS available for a new reservation are determined
+ * from the intersection of @global, @local, and @pending.
+ *
+ * The radio controller must transmit a DRP Availability IE that's the
+ * intersection of @global and @local.
+ *
+ * A set bit indicates the MAS is unused and available.
+ *
+ * rc->rsvs_mutex should be held before accessing this data structure.
+ *
+ * [ECMA-368] section 17.4.3.
+ */
+struct uwb_drp_avail {
+        DECLARE_BITMAP(global, UWB_NUM_MAS);
+        DECLARE_BITMAP(local, UWB_NUM_MAS);
+        DECLARE_BITMAP(pending, UWB_NUM_MAS);
+        struct uwb_ie_drp_avail ie;
+        bool ie_valid;
+};
+
+
+const char *uwb_rsv_state_str(enum uwb_rsv_state state);
+const char *uwb_rsv_type_str(enum uwb_drp_type type);
+
+struct uwb_rsv *uwb_rsv_create(struct uwb_rc *rc, uwb_rsv_cb_f cb,
+                               void *pal_priv);
+void uwb_rsv_destroy(struct uwb_rsv *rsv);
+
+int uwb_rsv_establish(struct uwb_rsv *rsv);
+int uwb_rsv_modify(struct uwb_rsv *rsv,
+                   int max_mas, int min_mas, int sparsity);
+void uwb_rsv_terminate(struct uwb_rsv *rsv);
+
+void uwb_rsv_accept(struct uwb_rsv *rsv, uwb_rsv_cb_f cb, void *pal_priv);
+
+/**
+ * Radio Control Interface instance
+ *
+ *
+ * Life cycle rules: those of the UWB Device.
+ *
+ * @index:    an index number for this radio controller, as used in the
+ *            device name.
+ * @version:  version of protocol supported by this device
+ * @priv:     Backend implementation; rw with uwb_dev.dev.sem taken.
+ * @cmd:      Backend implementation to execute commands; rw and call
+ *            only  with uwb_dev.dev.sem taken.
+ * @reset:    Hardware reset of radio controller and any PAL controllers.
+ * @filter:   Backend implementation to manipulate data to and from device
+ *            to be compliant to specification assumed by driver (WHCI
+ *            0.95).
+ *
+ *            uwb_dev.dev.mutex is used to execute commands and update
+ *            the corresponding structures; can't use a spinlock
+ *            because rc->cmd() can sleep.
+ * @ies:         This is a dynamically allocated array cacheing the
+ *               IEs (settable by the host) that the beacon of this
+ *               radio controller is currently sending.
+ *
+ *               In reality, we store here the full command we set to
+ *               the radio controller (which is basically a command
+ *               prefix followed by all the IEs the beacon currently
+ *               contains). This way we don't have to realloc and
+ *               memcpy when setting it.
+ *
+ *               We set this up in uwb_rc_ie_setup(), where we alloc
+ *               this struct, call get_ie() [so we know which IEs are
+ *               currently being sent, if any].
+ *
+ * @ies_capacity:Amount of space (in bytes) allocated in @ies. The
+ *               amount used is given by sizeof(*ies) plus ies->wIELength
+ *               (which is a little endian quantity all the time).
+ * @ies_mutex:   protect the IE cache
+ * @dbg:         information for the debug interface
+ */
+struct uwb_rc {
+        struct uwb_dev uwb_dev;
+        int index;
+        u16 version;
+
+        struct module *owner;
+        void *priv;
+        int (*start)(struct uwb_rc *rc);
+        void (*stop)(struct uwb_rc *rc);
+        int (*cmd)(struct uwb_rc *, const struct uwb_rccb *, size_t);
+        int (*reset)(struct uwb_rc *rc);
+        int (*filter_cmd)(struct uwb_rc *, struct uwb_rccb **, size_t *);
+        int (*filter_event)(struct uwb_rc *, struct uwb_rceb **, const size_t,
+                            size_t *, size_t *);
+
+        spinlock_t neh_lock;            /* protects neh_* and ctx_* */
+        struct list_head neh_list;      /* Open NE handles */
+        unsigned long ctx_bm[UWB_RC_CTX_MAX / 8 / sizeof(unsigned long)];
+        u8 ctx_roll;
+
+        int beaconing;                  /* Beaconing state [channel number] */
+        int scanning;
+        enum uwb_scan_type scan_type:3;
+        unsigned ready:1;
+        struct uwb_notifs_chain notifs_chain;
+
+        struct uwb_drp_avail drp_avail;
+        struct list_head reservations;
+        struct mutex rsvs_mutex;
+        struct workqueue_struct *rsv_workq;
+        struct work_struct rsv_update_work;
+
+        struct mutex ies_mutex;
+        struct uwb_rc_cmd_set_ie *ies;
+        size_t ies_capacity;
+
+        spinlock_t pal_lock;
+        struct list_head pals;
+
+        struct uwb_dbg *dbg;
+};
+
+
+/**
+ * struct uwb_pal - a UWB PAL
+ * @name:    descriptive name for this PAL (wushc, wlp, etc.).
+ * @device:  a device for the PAL.  Used to link the PAL and the radio
+ *           controller in sysfs.
+ * @new_rsv: called when a peer requests a reservation (may be NULL if
+ *           the PAL cannot accept reservation requests).
+ *
+ * A Protocol Adaptation Layer (PAL) is a user of the WiMedia UWB
+ * radio platform (e.g., WUSB, WLP or Bluetooth UWB AMP).
+ *
+ * The PALs using a radio controller must register themselves to
+ * permit the UWB stack to coordinate usage of the radio between the
+ * various PALs or to allow PALs to response to certain requests from
+ * peers.
+ *
+ * A struct uwb_pal should be embedded in a containing structure
+ * belonging to the PAL and initialized with uwb_pal_init()).  Fields
+ * should be set appropriately by the PAL before registering the PAL
+ * with uwb_pal_register().
+ */
+struct uwb_pal {
+        struct list_head node;
+        const char *name;
+        struct device *device;
+        void (*new_rsv)(struct uwb_rsv *rsv);
+};
+
+void uwb_pal_init(struct uwb_pal *pal);
+int uwb_pal_register(struct uwb_rc *rc, struct uwb_pal *pal);
+void uwb_pal_unregister(struct uwb_rc *rc, struct uwb_pal *pal);
+
+/*
+ * General public API
+ *
+ * This API can be used by UWB device drivers or by those implementing
+ * UWB Radio Controllers
+ */
+struct uwb_dev *uwb_dev_get_by_devaddr(struct uwb_rc *rc,
+                                       const struct uwb_dev_addr *devaddr);
+struct uwb_dev *uwb_dev_get_by_rc(struct uwb_dev *, struct uwb_rc *);
+static inline void uwb_dev_get(struct uwb_dev *uwb_dev)
+{
+        get_device(&uwb_dev->dev);
+}
+static inline void uwb_dev_put(struct uwb_dev *uwb_dev)
+{
+        put_device(&uwb_dev->dev);
+}
+struct uwb_dev *uwb_dev_try_get(struct uwb_rc *rc, struct uwb_dev *uwb_dev);
+
+/**
+ * Callback function for 'uwb_{dev,rc}_foreach()'.
+ *
+ * @dev:  Linux device instance
+ *        'uwb_dev = container_of(dev, struct uwb_dev, dev)'
+ * @priv: Data passed by the caller to 'uwb_{dev,rc}_foreach()'.
+ *
+ * @returns: 0 to continue the iterations, any other val to stop
+ *           iterating and return the value to the caller of
+ *           _foreach().
+ */
+typedef int (*uwb_dev_for_each_f)(struct device *dev, void *priv);
+int uwb_dev_for_each(struct uwb_rc *rc, uwb_dev_for_each_f func, void *priv);
+
+struct uwb_rc *uwb_rc_alloc(void);
+struct uwb_rc *uwb_rc_get_by_dev(const struct uwb_dev_addr *);
+struct uwb_rc *uwb_rc_get_by_grandpa(const struct device *);
+void uwb_rc_put(struct uwb_rc *rc);
+
+typedef void (*uwb_rc_cmd_cb_f)(struct uwb_rc *rc, void *arg,
+                                struct uwb_rceb *reply, ssize_t reply_size);
+
+int uwb_rc_cmd_async(struct uwb_rc *rc, const char *cmd_name,
+                     struct uwb_rccb *cmd, size_t cmd_size,
+                     u8 expected_type, u16 expected_event,
+                     uwb_rc_cmd_cb_f cb, void *arg);
+ssize_t uwb_rc_cmd(struct uwb_rc *rc, const char *cmd_name,
+                   struct uwb_rccb *cmd, size_t cmd_size,
+                   struct uwb_rceb *reply, size_t reply_size);
+ssize_t uwb_rc_vcmd(struct uwb_rc *rc, const char *cmd_name,
+                    struct uwb_rccb *cmd, size_t cmd_size,
+                    u8 expected_type, u16 expected_event,
+                    struct uwb_rceb **preply);
+ssize_t uwb_rc_get_ie(struct uwb_rc *, struct uwb_rc_evt_get_ie **);
+int uwb_bg_joined(struct uwb_rc *rc);
+
+size_t __uwb_addr_print(char *, size_t, const unsigned char *, int);
+
+int uwb_rc_dev_addr_set(struct uwb_rc *, const struct uwb_dev_addr *);
+int uwb_rc_dev_addr_get(struct uwb_rc *, struct uwb_dev_addr *);
+int uwb_rc_mac_addr_set(struct uwb_rc *, const struct uwb_mac_addr *);
+int uwb_rc_mac_addr_get(struct uwb_rc *, struct uwb_mac_addr *);
+int __uwb_mac_addr_assigned_check(struct device *, void *);
+int __uwb_dev_addr_assigned_check(struct device *, void *);
+
+/* Print in @buf a pretty repr of @addr */
+static inline size_t uwb_dev_addr_print(char *buf, size_t buf_size,
+                                        const struct uwb_dev_addr *addr)
+{
+        return __uwb_addr_print(buf, buf_size, addr->data, 0);
+}
+
+/* Print in @buf a pretty repr of @addr */
+static inline size_t uwb_mac_addr_print(char *buf, size_t buf_size,
+                                        const struct uwb_mac_addr *addr)
+{
+        return __uwb_addr_print(buf, buf_size, addr->data, 1);
+}
+
+/* @returns 0 if device addresses @addr2 and @addr1 are equal */
+static inline int uwb_dev_addr_cmp(const struct uwb_dev_addr *addr1,
+                                   const struct uwb_dev_addr *addr2)
+{
+        return memcmp(addr1, addr2, sizeof(*addr1));
+}
+
+/* @returns 0 if MAC addresses @addr2 and @addr1 are equal */
+static inline int uwb_mac_addr_cmp(const struct uwb_mac_addr *addr1,
+                                   const struct uwb_mac_addr *addr2)
+{
+        return memcmp(addr1, addr2, sizeof(*addr1));
+}
+
+/* @returns !0 if a MAC @addr is a broadcast address */
+static inline int uwb_mac_addr_bcast(const struct uwb_mac_addr *addr)
+{
+        struct uwb_mac_addr bcast = {
+                .data = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }
+        };
+        return !uwb_mac_addr_cmp(addr, &bcast);
+}
+
+/* @returns !0 if a MAC @addr is all zeroes*/
+static inline int uwb_mac_addr_unset(const struct uwb_mac_addr *addr)
+{
+        struct uwb_mac_addr unset = {
+                .data = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }
+        };
+        return !uwb_mac_addr_cmp(addr, &unset);
+}
+
+/* @returns !0 if the address is in use. */
+static inline unsigned __uwb_dev_addr_assigned(struct uwb_rc *rc,
+                                               struct uwb_dev_addr *addr)
+{
+        return uwb_dev_for_each(rc, __uwb_dev_addr_assigned_check, addr);
+}
+
+/*
+ * UWB Radio Controller API
+ *
+ * This API is used (in addition to the general API) to implement UWB
+ * Radio Controllers.
+ */
+void uwb_rc_init(struct uwb_rc *);
+int uwb_rc_add(struct uwb_rc *, struct device *dev, void *rc_priv);
+void uwb_rc_rm(struct uwb_rc *);
+void uwb_rc_neh_grok(struct uwb_rc *, void *, size_t);
+void uwb_rc_neh_error(struct uwb_rc *, int);
+void uwb_rc_reset_all(struct uwb_rc *rc);
+
+/**
+ * uwb_rsv_is_owner - is the owner of this reservation the RC?
+ * @rsv: the reservation
+ */
+static inline bool uwb_rsv_is_owner(struct uwb_rsv *rsv)
+{
+        return rsv->owner == &rsv->rc->uwb_dev;
+}
+
+/**
+ * Events generated by UWB that can be passed to any listeners
+ *
+ * Higher layers can register callback functions with the radio
+ * controller using uwb_notifs_register(). The radio controller
+ * maintains a list of all registered handlers and will notify all
+ * nodes when an event occurs.
+ */
+enum uwb_notifs {
+        UWB_NOTIF_BG_JOIN = 0,  /* radio controller joined a beacon group */
+        UWB_NOTIF_BG_LEAVE = 1, /* radio controller left a beacon group */
+        UWB_NOTIF_ONAIR,
+        UWB_NOTIF_OFFAIR,
+};
+
+/* Callback function registered with UWB */
+struct uwb_notifs_handler {
+        struct list_head list_node;
+        void (*cb)(void *, struct uwb_dev *, enum uwb_notifs);
+        void *data;
+};
+
+int uwb_notifs_register(struct uwb_rc *, struct uwb_notifs_handler *);
+int uwb_notifs_deregister(struct uwb_rc *, struct uwb_notifs_handler *);
+
+
+/**
+ * UWB radio controller Event Size Entry (for creating entry tables)
+ *
+ * WUSB and WHCI define events and notifications, and they might have
+ * fixed or variable size.
+ *
+ * Each event/notification has a size which is not necessarily known
+ * in advance based on the event code. As well, vendor specific
+ * events/notifications will have a size impossible to determine
+ * unless we know about the device's specific details.
+ *
+ * It was way too smart of the spec writers not to think that it would
+ * be impossible for a generic driver to skip over vendor specific
+ * events/notifications if there are no LENGTH fields in the HEADER of
+ * each message...the transaction size cannot be counted on as the
+ * spec does not forbid to pack more than one event in a single
+ * transaction.
+ *
+ * Thus, we guess sizes with tables (or for events, when you know the
+ * size ahead of time you can use uwb_rc_neh_extra_size*()). We
+ * register tables with the known events and their sizes, and then we
+ * traverse those tables. For those with variable length, we provide a
+ * way to lookup the size inside the event/notification's
+ * payload. This allows device-specific event size tables to be
+ * registered.
+ *
+ * @size:   Size of the payload
+ *
+ * @offset: if != 0, at offset @offset-1 starts a field with a length
+ *          that has to be added to @size. The format of the field is
+ *          given by @type.
+ *
+ * @type:   Type and length of the offset field. Most common is LE 16
+ *          bits (that's why that is zero); others are there mostly to
+ *          cover for bugs and weirdos.
+ */
+struct uwb_est_entry {
+        size_t size;
+        unsigned offset;
+        enum { UWB_EST_16 = 0, UWB_EST_8 = 1 } type;
+};
+
+int uwb_est_register(u8 type, u8 code_high, u16 vendor, u16 product,
+                     const struct uwb_est_entry *, size_t entries);
+int uwb_est_unregister(u8 type, u8 code_high, u16 vendor, u16 product,
+                       const struct uwb_est_entry *, size_t entries);
+ssize_t uwb_est_find_size(struct uwb_rc *rc, const struct uwb_rceb *rceb,
+                          size_t len);
+
+/* -- Misc */
+
+enum {
+        EDC_MAX_ERRORS = 10,
+        EDC_ERROR_TIMEFRAME = HZ,
+};
+
+/* error density counter */
+struct edc {
+        unsigned long timestart;
+        u16 errorcount;
+};
+
+static inline
+void edc_init(struct edc *edc)
+{
+        edc->timestart = jiffies;
+}
+
+/* Called when an error occured.
+ * This is way to determine if the number of acceptable errors per time
+ * period has been exceeded. It is not accurate as there are cases in which
+ * this scheme will not work, for example if there are periodic occurences
+ * of errors that straddle updates to the start time. This scheme is
+ * sufficient for our usage.
+ *
+ * @returns 1 if maximum acceptable errors per timeframe has been exceeded.
+ */
+static inline int edc_inc(struct edc *err_hist, u16 max_err, u16 timeframe)
+{
+        unsigned long now;
+
+        now = jiffies;
+        if (now - err_hist->timestart > timeframe) {
+                err_hist->errorcount = 1;
+                err_hist->timestart = now;
+        } else if (++err_hist->errorcount > max_err) {
+                        err_hist->errorcount = 0;
+                        err_hist->timestart = now;
+                        return 1;
+        }
+        return 0;
+}
+
+
+/* Information Element handling */
+
+/* For representing the state of writing to a buffer when iterating */
+struct uwb_buf_ctx {
+        char *buf;
+        size_t bytes, size;
+};
+
+typedef int (*uwb_ie_f)(struct uwb_dev *, const struct uwb_ie_hdr *,
+                        size_t, void *);
+struct uwb_ie_hdr *uwb_ie_next(void **ptr, size_t *len);
+ssize_t uwb_ie_for_each(struct uwb_dev *uwb_dev, uwb_ie_f fn, void *data,
+                        const void *buf, size_t size);
+int uwb_ie_dump_hex(struct uwb_dev *, const struct uwb_ie_hdr *,
+                    size_t, void *);
+int uwb_rc_set_ie(struct uwb_rc *, struct uwb_rc_cmd_set_ie *);
+struct uwb_ie_hdr *uwb_ie_next(void **ptr, size_t *len);
+
+
+/*
+ * Transmission statistics
+ *
+ * UWB uses LQI and RSSI (one byte values) for reporting radio signal
+ * strength and line quality indication. We do quick and dirty
+ * averages of those. They are signed values, btw.
+ *
+ * For 8 bit quantities, we keep the min, the max, an accumulator
+ * (@sigma) and a # of samples. When @samples gets to 255, we compute
+ * the average (@sigma / @samples), place it in @sigma and reset
+ * @samples to 1 (so we use it as the first sample).
+ *
+ * Now, statistically speaking, probably I am kicking the kidneys of
+ * some books I have in my shelves collecting dust, but I just want to
+ * get an approx, not the Nobel.
+ *
+ * LOCKING: there is no locking per se, but we try to keep a lockless
+ * schema. Only _add_samples() modifies the values--as long as you
+ * have other locking on top that makes sure that no two calls of
+ * _add_sample() happen at the same time, then we are fine. Now, for
+ * resetting the values we just set @samples to 0 and that makes the
+ * next _add_sample() to start with defaults. Reading the values in
+ * _show() currently can race, so you need to make sure the calls are
+ * under the same lock that protects calls to _add_sample(). FIXME:
+ * currently unlocked (It is not ultraprecise but does the trick. Bite
+ * me).
+ */
+struct stats {
+        s8 min, max;
+        s16 sigma;
+        atomic_t samples;
+};
+
+static inline
+void stats_init(struct stats *stats)
+{
+        atomic_set(&stats->samples, 0);
+        wmb();
+}
+
+static inline
+void stats_add_sample(struct stats *stats, s8 sample)
+{
+        s8 min, max;
+        s16 sigma;
+        unsigned samples = atomic_read(&stats->samples);
+        if (samples == 0) {     /* it was zero before, so we initialize */
+                min = 127;
+                max = -128;
+                sigma = 0;
+        } else {
+                min = stats->min;
+                max = stats->max;
+                sigma = stats->sigma;
+        }
+
+        if (sample < min)       /* compute new values */
+                min = sample;
+        else if (sample > max)
+                max = sample;
+        sigma += sample;
+
+        stats->min = min;       /* commit */
+        stats->max = max;
+        stats->sigma = sigma;
+        if (atomic_add_return(1, &stats->samples) > 255) {
+                /* wrapped around! reset */
+                stats->sigma = sigma / 256;
+                atomic_set(&stats->samples, 1);
+        }
+}
+
+static inline ssize_t stats_show(struct stats *stats, char *buf)
+{
+        int min, max, avg;
+        int samples = atomic_read(&stats->samples);
+        if (samples == 0)
+                min = max = avg = 0;
+        else {
+                min = stats->min;
+                max = stats->max;
+                avg = stats->sigma / samples;
+        }
+        return scnprintf(buf, PAGE_SIZE, "%d %d %d\n", min, max, avg);
+}
+
+static inline ssize_t stats_store(struct stats *stats, const char *buf,
+                                  size_t size)
+{
+        stats_init(stats);
+        return size;
+}
+
+#endif /* #ifndef __LINUX__UWB_H__ */
diff --git a/include/linux/uwb/debug-cmd.h b/include/linux/uwb/debug-cmd.h
new file mode 100644
index 000000000000..1141f41bab5c
--- /dev/null
+++ b/include/linux/uwb/debug-cmd.h
@@ -0,0 +1,57 @@
+/*
+ * Ultra Wide Band
+ * Debug interface commands
+ *
+ * Copyright (C) 2008 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef __LINUX__UWB__DEBUG_CMD_H__
+#define __LINUX__UWB__DEBUG_CMD_H__
+
+#include <linux/types.h>
+
+/*
+ * Debug interface commands
+ *
+ * UWB_DBG_CMD_RSV_ESTABLISH: Establish a new unicast reservation.
+ *
+ * UWB_DBG_CMD_RSV_TERMINATE: Terminate the Nth reservation.
+ */
+
+enum uwb_dbg_cmd_type {
+        UWB_DBG_CMD_RSV_ESTABLISH = 1,
+        UWB_DBG_CMD_RSV_TERMINATE = 2,
+};
+
+struct uwb_dbg_cmd_rsv_establish {
+        __u8  target[6];
+        __u8  type;
+        __u16 max_mas;
+        __u16 min_mas;
+        __u8  sparsity;
+};
+
+struct uwb_dbg_cmd_rsv_terminate {
+        int index;
+};
+
+struct uwb_dbg_cmd {
+        __u32 type;
+        union {
+                struct uwb_dbg_cmd_rsv_establish rsv_establish;
+                struct uwb_dbg_cmd_rsv_terminate rsv_terminate;
+        };
+};
+
+#endif /* #ifndef __LINUX__UWB__DEBUG_CMD_H__ */
diff --git a/include/linux/uwb/debug.h b/include/linux/uwb/debug.h
new file mode 100644
index 000000000000..a86a73fe303f
--- /dev/null
+++ b/include/linux/uwb/debug.h
@@ -0,0 +1,82 @@
+/*
+ * Ultra Wide Band
+ * Debug Support
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: doc
+ * Invoke like:
+ *
+ * #define D_LOCAL 4
+ * #include <linux/uwb/debug.h>
+ *
+ * At the end of your include files.
+ */
+#include <linux/types.h>
+
+struct device;
+extern void dump_bytes(struct device *dev, const void *_buf, size_t rsize);
+
+/* Master debug switch; !0 enables, 0 disables */
+#define D_MASTER (!0)
+
+/* Local (per-file) debug switch; #define before #including */
+#ifndef D_LOCAL
+#define D_LOCAL 0
+#endif
+
+#undef __d_printf
+#undef d_fnstart
+#undef d_fnend
+#undef d_printf
+#undef d_dump
+
+#define __d_printf(l, _tag, _dev, f, a...)                              \
+do {                                                                    \
+        struct device *__dev = (_dev);                                  \
+        if (D_MASTER && D_LOCAL >= (l)) {                               \
+                char __head[64] = "";                                   \
+                if (_dev != NULL) {                                     \
+                        if ((unsigned long)__dev < 4096)                \
+                                printk(KERN_ERR "E: Corrupt dev %p\n",  \
+                                        __dev);                         \
+                        else                                            \
+                                snprintf(__head, sizeof(__head),        \
+                                         "%s %s: ",                     \
+                                         dev_driver_string(__dev),      \
+                                         __dev->bus_id);                \
+                }                                                       \
+                printk(KERN_ERR "%s%s" _tag ": " f, __head,             \
+                        __func__, ## a);                                \
+        }                                                               \
+} while (0 && _dev)
+
+#define d_fnstart(l, _dev, f, a...)     \
+        __d_printf(l, " FNSTART", _dev, f, ## a)
+#define d_fnend(l, _dev, f, a...)       \
+        __d_printf(l, " FNEND", _dev, f, ## a)
+#define d_printf(l, _dev, f, a...)      \
+        __d_printf(l, "", _dev, f, ## a)
+#define d_dump(l, _dev, ptr, size)              \
+do {                                            \
+        struct device *__dev = _dev;            \
+        if (D_MASTER && D_LOCAL >= (l))         \
+                dump_bytes(__dev, ptr, size);   \
+} while (0 && _dev)
+#define d_test(l) (D_MASTER && D_LOCAL >= (l))
diff --git a/include/linux/uwb/spec.h b/include/linux/uwb/spec.h
new file mode 100644
index 000000000000..198c15f8e251
--- /dev/null
+++ b/include/linux/uwb/spec.h
@@ -0,0 +1,727 @@
+/*
+ * Ultra Wide Band
+ * UWB Standard definitions
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * All these definitions are based on the ECMA-368 standard.
+ *
+ * Note all definitions are Little Endian in the wire, and we will
+ * convert them to host order before operating on the bitfields (that
+ * yes, we use extensively).
+ */
+
+#ifndef __LINUX__UWB_SPEC_H__
+#define __LINUX__UWB_SPEC_H__
+
+#include <linux/types.h>
+#include <linux/bitmap.h>
+
+#define i1480_FW 0x00000303
+/* #define i1480_FW 0x00000302 */
+
+/**
+ * Number of Medium Access Slots in a superframe.
+ *
+ * UWB divides time in SuperFrames, each one divided in 256 pieces, or
+ * Medium Access Slots. See MBOA MAC[5.4.5] for details. The MAS is the
+ * basic bandwidth allocation unit in UWB.
+ */
+enum { UWB_NUM_MAS = 256 };
+
+/**
+ * Number of Zones in superframe.
+ *
+ * UWB divides the superframe into zones with numbering starting from BPST.
+ * See MBOA MAC[16.8.6]
+ */
+enum { UWB_NUM_ZONES = 16 };
+
+/*
+ * Number of MAS in a zone.
+ */
+#define UWB_MAS_PER_ZONE (UWB_NUM_MAS / UWB_NUM_ZONES)
+
+/*
+ * Number of streams per DRP reservation between a pair of devices.
+ *
+ * [ECMA-368] section 16.8.6.
+ */
+enum { UWB_NUM_STREAMS = 8 };
+
+/*
+ * mMasLength
+ *
+ * The length of a MAS in microseconds.
+ *
+ * [ECMA-368] section 17.16.
+ */
+enum { UWB_MAS_LENGTH_US = 256 };
+
+/*
+ * mBeaconSlotLength
+ *
+ * The length of the beacon slot in microseconds.
+ *
+ * [ECMA-368] section 17.16
+ */
+enum { UWB_BEACON_SLOT_LENGTH_US = 85 };
+
+/*
+ * mMaxLostBeacons
+ *
+ * The number beacons missing in consecutive superframes before a
+ * device can be considered as unreachable.
+ *
+ * [ECMA-368] section 17.16
+ */
+enum { UWB_MAX_LOST_BEACONS = 3 };
+
+/*
+ * Length of a superframe in microseconds.
+ */
+#define UWB_SUPERFRAME_LENGTH_US (UWB_MAS_LENGTH_US * UWB_NUM_MAS)
+
+/**
+ * UWB MAC address
+ *
+ * It is *imperative* that this struct is exactly 6 packed bytes (as
+ * it is also used to define headers sent down and up the wire/radio).
+ */
+struct uwb_mac_addr {
+        u8 data[6];
+} __attribute__((packed));
+
+
+/**
+ * UWB device address
+ *
+ * It is *imperative* that this struct is exactly 6 packed bytes (as
+ * it is also used to define headers sent down and up the wire/radio).
+ */
+struct uwb_dev_addr {
+        u8 data[2];
+} __attribute__((packed));
+
+
+/**
+ * Types of UWB addresses
+ *
+ * Order matters (by size).
+ */
+enum uwb_addr_type {
+        UWB_ADDR_DEV = 0,
+        UWB_ADDR_MAC = 1,
+};
+
+
+/** Size of a char buffer for printing a MAC/device address */
+enum { UWB_ADDR_STRSIZE = 32 };
+
+
+/** UWB WiMedia protocol IDs. */
+enum uwb_prid {
+        UWB_PRID_WLP_RESERVED   = 0x0000,
+        UWB_PRID_WLP            = 0x0001,
+        UWB_PRID_WUSB_BOT       = 0x0010,
+        UWB_PRID_WUSB           = 0x0010,
+        UWB_PRID_WUSB_TOP       = 0x001F,
+};
+
+
+/** PHY Rate (MBOA MAC[7.8.12, Table 61]) */
+enum uwb_phy_rate {
+        UWB_PHY_RATE_53 = 0,
+        UWB_PHY_RATE_80,
+        UWB_PHY_RATE_106,
+        UWB_PHY_RATE_160,
+        UWB_PHY_RATE_200,
+        UWB_PHY_RATE_320,
+        UWB_PHY_RATE_400,
+        UWB_PHY_RATE_480,
+        UWB_PHY_RATE_INVALID
+};
+
+
+/**
+ * Different ways to scan (MBOA MAC[6.2.2, Table 8], WUSB[Table 8-78])
+ */
+enum uwb_scan_type {
+        UWB_SCAN_ONLY = 0,
+        UWB_SCAN_OUTSIDE_BP,
+        UWB_SCAN_WHILE_INACTIVE,
+        UWB_SCAN_DISABLED,
+        UWB_SCAN_ONLY_STARTTIME,
+        UWB_SCAN_TOP
+};
+
+
+/** ACK Policy types (MBOA MAC[7.2.1.3]) */
+enum uwb_ack_pol {
+        UWB_ACK_NO = 0,
+        UWB_ACK_INM = 1,
+        UWB_ACK_B = 2,
+        UWB_ACK_B_REQ = 3,
+};
+
+
+/** DRP reservation types ([ECMA-368 table 106) */
+enum uwb_drp_type {
+        UWB_DRP_TYPE_ALIEN_BP = 0,
+        UWB_DRP_TYPE_HARD,
+        UWB_DRP_TYPE_SOFT,
+        UWB_DRP_TYPE_PRIVATE,
+        UWB_DRP_TYPE_PCA,
+};
+
+
+/** DRP Reason Codes ([ECMA-368] table 107) */
+enum uwb_drp_reason {
+        UWB_DRP_REASON_ACCEPTED = 0,
+        UWB_DRP_REASON_CONFLICT,
+        UWB_DRP_REASON_PENDING,
+        UWB_DRP_REASON_DENIED,
+        UWB_DRP_REASON_MODIFIED,
+};
+
+/**
+ *  DRP Notification Reason Codes (WHCI 0.95 [3.1.4.9])
+ */
+enum uwb_drp_notif_reason {
+        UWB_DRP_NOTIF_DRP_IE_RCVD = 0,
+        UWB_DRP_NOTIF_CONFLICT,
+        UWB_DRP_NOTIF_TERMINATE,
+};
+
+
+/** Allocation of MAS slots in a DRP request MBOA MAC[7.8.7] */
+struct uwb_drp_alloc {
+        __le16 zone_bm;
+        __le16 mas_bm;
+} __attribute__((packed));
+
+
+/** General MAC Header format (ECMA-368[16.2]) */
+struct uwb_mac_frame_hdr {
+        __le16 Frame_Control;
+        struct uwb_dev_addr DestAddr;
+        struct uwb_dev_addr SrcAddr;
+        __le16 Sequence_Control;
+        __le16 Access_Information;
+} __attribute__((packed));
+
+
+/**
+ * uwb_beacon_frame - a beacon frame including MAC headers
+ *
+ * [ECMA] section 16.3.
+ */
+struct uwb_beacon_frame {
+        struct uwb_mac_frame_hdr hdr;
+        struct uwb_mac_addr Device_Identifier;  /* may be a NULL EUI-48 */
+        u8 Beacon_Slot_Number;
+        u8 Device_Control;
+        u8 IEData[];
+} __attribute__((packed));
+
+
+/** Information Element codes (MBOA MAC[T54]) */
+enum uwb_ie {
+        UWB_PCA_AVAILABILITY = 2,
+        UWB_IE_DRP_AVAILABILITY = 8,
+        UWB_IE_DRP = 9,
+        UWB_BP_SWITCH_IE = 11,
+        UWB_MAC_CAPABILITIES_IE = 12,
+        UWB_PHY_CAPABILITIES_IE = 13,
+        UWB_APP_SPEC_PROBE_IE = 15,
+        UWB_IDENTIFICATION_IE = 19,
+        UWB_MASTER_KEY_ID_IE = 20,
+        UWB_IE_WLP = 250, /* WiMedia Logical Link Control Protocol WLP 0.99 */
+        UWB_APP_SPEC_IE = 255,
+};
+
+
+/**
+ * Header common to all Information Elements (IEs)
+ */
+struct uwb_ie_hdr {
+        u8 element_id;  /* enum uwb_ie */
+        u8 length;
+} __attribute__((packed));
+
+
+/** Dynamic Reservation Protocol IE (MBOA MAC[7.8.6]) */
+struct uwb_ie_drp {
+        struct uwb_ie_hdr       hdr;
+        __le16                  drp_control;
+        struct uwb_dev_addr     dev_addr;
+        struct uwb_drp_alloc    allocs[];
+} __attribute__((packed));
+
+static inline int uwb_ie_drp_type(struct uwb_ie_drp *ie)
+{
+        return (le16_to_cpu(ie->drp_control) >> 0) & 0x7;
+}
+
+static inline int uwb_ie_drp_stream_index(struct uwb_ie_drp *ie)
+{
+        return (le16_to_cpu(ie->drp_control) >> 3) & 0x7;
+}
+
+static inline int uwb_ie_drp_reason_code(struct uwb_ie_drp *ie)
+{
+        return (le16_to_cpu(ie->drp_control) >> 6) & 0x7;
+}
+
+static inline int uwb_ie_drp_status(struct uwb_ie_drp *ie)
+{
+        return (le16_to_cpu(ie->drp_control) >> 9) & 0x1;
+}
+
+static inline int uwb_ie_drp_owner(struct uwb_ie_drp *ie)
+{
+        return (le16_to_cpu(ie->drp_control) >> 10) & 0x1;
+}
+
+static inline int uwb_ie_drp_tiebreaker(struct uwb_ie_drp *ie)
+{
+        return (le16_to_cpu(ie->drp_control) >> 11) & 0x1;
+}
+
+static inline int uwb_ie_drp_unsafe(struct uwb_ie_drp *ie)
+{
+        return (le16_to_cpu(ie->drp_control) >> 12) & 0x1;
+}
+
+static inline void uwb_ie_drp_set_type(struct uwb_ie_drp *ie, enum uwb_drp_type type)
+{
+        u16 drp_control = le16_to_cpu(ie->drp_control);
+        drp_control = (drp_control & ~(0x7 << 0)) | (type << 0);
+        ie->drp_control = cpu_to_le16(drp_control);
+}
+
+static inline void uwb_ie_drp_set_stream_index(struct uwb_ie_drp *ie, int stream_index)
+{
+        u16 drp_control = le16_to_cpu(ie->drp_control);
+        drp_control = (drp_control & ~(0x7 << 3)) | (stream_index << 3);
+        ie->drp_control = cpu_to_le16(drp_control);
+}
+
+static inline void uwb_ie_drp_set_reason_code(struct uwb_ie_drp *ie,
+                                       enum uwb_drp_reason reason_code)
+{
+        u16 drp_control = le16_to_cpu(ie->drp_control);
+        drp_control = (ie->drp_control & ~(0x7 << 6)) | (reason_code << 6);
+        ie->drp_control = cpu_to_le16(drp_control);
+}
+
+static inline void uwb_ie_drp_set_status(struct uwb_ie_drp *ie, int status)
+{
+        u16 drp_control = le16_to_cpu(ie->drp_control);
+        drp_control = (drp_control & ~(0x1 << 9)) | (status << 9);
+        ie->drp_control = cpu_to_le16(drp_control);
+}
+
+static inline void uwb_ie_drp_set_owner(struct uwb_ie_drp *ie, int owner)
+{
+        u16 drp_control = le16_to_cpu(ie->drp_control);
+        drp_control = (drp_control & ~(0x1 << 10)) | (owner << 10);
+        ie->drp_control = cpu_to_le16(drp_control);
+}
+
+static inline void uwb_ie_drp_set_tiebreaker(struct uwb_ie_drp *ie, int tiebreaker)
+{
+        u16 drp_control = le16_to_cpu(ie->drp_control);
+        drp_control = (drp_control & ~(0x1 << 11)) | (tiebreaker << 11);
+        ie->drp_control = cpu_to_le16(drp_control);
+}
+
+static inline void uwb_ie_drp_set_unsafe(struct uwb_ie_drp *ie, int unsafe)
+{
+        u16 drp_control = le16_to_cpu(ie->drp_control);
+        drp_control = (drp_control & ~(0x1 << 12)) | (unsafe << 12);
+        ie->drp_control = cpu_to_le16(drp_control);
+}
+
+/** Dynamic Reservation Protocol IE (MBOA MAC[7.8.7]) */
+struct uwb_ie_drp_avail {
+        struct uwb_ie_hdr       hdr;
+        DECLARE_BITMAP(bmp, UWB_NUM_MAS);
+} __attribute__((packed));
+
+/**
+ * The Vendor ID is set to an OUI that indicates the vendor of the device.
+ * ECMA-368 [16.8.10]
+ */
+struct uwb_vendor_id {
+        u8 data[3];
+} __attribute__((packed));
+
+/**
+ * The device type ID
+ * FIXME: clarify what this means
+ * ECMA-368 [16.8.10]
+ */
+struct uwb_device_type_id {
+        u8 data[3];
+} __attribute__((packed));
+
+
+/**
+ * UWB device information types
+ * ECMA-368 [16.8.10]
+ */
+enum uwb_dev_info_type {
+        UWB_DEV_INFO_VENDOR_ID = 0,
+        UWB_DEV_INFO_VENDOR_TYPE,
+        UWB_DEV_INFO_NAME,
+};
+
+/**
+ * UWB device information found in Identification IE
+ * ECMA-368 [16.8.10]
+ */
+struct uwb_dev_info {
+        u8 type;        /* enum uwb_dev_info_type */
+        u8 length;
+        u8 data[];
+} __attribute__((packed));
+
+/**
+ * UWB Identification IE
+ * ECMA-368 [16.8.10]
+ */
+struct uwb_identification_ie {
+        struct uwb_ie_hdr hdr;
+        struct uwb_dev_info info[];
+} __attribute__((packed));
+
+/*
+ * UWB Radio Controller
+ *
+ * These definitions are common to the Radio Control layers as
+ * exported by the WUSB1.0 HWA and WHCI interfaces.
+ */
+
+/** Radio Control Command Block (WUSB1.0[Table 8-65] and WHCI 0.95) */
+struct uwb_rccb {
+        u8 bCommandType;                /* enum hwa_cet */
+        __le16 wCommand;                /* Command code */
+        u8 bCommandContext;             /* Context ID */
+} __attribute__((packed));
+
+
+/** Radio Control Event Block (WUSB[table 8-66], WHCI 0.95) */
+struct uwb_rceb {
+        u8 bEventType;                  /* enum hwa_cet */
+        __le16 wEvent;                  /* Event code */
+        u8 bEventContext;               /* Context ID */
+} __attribute__((packed));
+
+
+enum {
+        UWB_RC_CET_GENERAL = 0,         /* General Command/Event type */
+        UWB_RC_CET_EX_TYPE_1 = 1,       /* Extended Type 1 Command/Event type */
+};
+
+/* Commands to the radio controller */
+enum uwb_rc_cmd {
+        UWB_RC_CMD_CHANNEL_CHANGE = 16,
+        UWB_RC_CMD_DEV_ADDR_MGMT = 17,  /* Device Address Management */
+        UWB_RC_CMD_GET_IE = 18,         /* GET Information Elements */
+        UWB_RC_CMD_RESET = 19,
+        UWB_RC_CMD_SCAN = 20,           /* Scan management  */
+        UWB_RC_CMD_SET_BEACON_FILTER = 21,
+        UWB_RC_CMD_SET_DRP_IE = 22,     /* Dynamic Reservation Protocol IEs */
+        UWB_RC_CMD_SET_IE = 23,         /* Information Element management */
+        UWB_RC_CMD_SET_NOTIFICATION_FILTER = 24,
+        UWB_RC_CMD_SET_TX_POWER = 25,
+        UWB_RC_CMD_SLEEP = 26,
+        UWB_RC_CMD_START_BEACON = 27,
+        UWB_RC_CMD_STOP_BEACON = 28,
+        UWB_RC_CMD_BP_MERGE = 29,
+        UWB_RC_CMD_SEND_COMMAND_FRAME = 30,
+        UWB_RC_CMD_SET_ASIE_NOTIF = 31,
+};
+
+/* Notifications from the radio controller */
+enum uwb_rc_evt {
+        UWB_RC_EVT_IE_RCV = 0,
+        UWB_RC_EVT_BEACON = 1,
+        UWB_RC_EVT_BEACON_SIZE = 2,
+        UWB_RC_EVT_BPOIE_CHANGE = 3,
+        UWB_RC_EVT_BP_SLOT_CHANGE = 4,
+        UWB_RC_EVT_BP_SWITCH_IE_RCV = 5,
+        UWB_RC_EVT_DEV_ADDR_CONFLICT = 6,
+        UWB_RC_EVT_DRP_AVAIL = 7,
+        UWB_RC_EVT_DRP = 8,
+        UWB_RC_EVT_BP_SWITCH_STATUS = 9,
+        UWB_RC_EVT_CMD_FRAME_RCV = 10,
+        UWB_RC_EVT_CHANNEL_CHANGE_IE_RCV = 11,
+        /* Events (command responses) use the same code as the command */
+        UWB_RC_EVT_UNKNOWN_CMD_RCV = 65535,
+};
+
+enum uwb_rc_extended_type_1_cmd {
+        UWB_RC_SET_DAA_ENERGY_MASK = 32,
+        UWB_RC_SET_NOTIFICATION_FILTER_EX = 33,
+};
+
+enum uwb_rc_extended_type_1_evt {
+        UWB_RC_DAA_ENERGY_DETECTED = 0,
+};
+
+/* Radio Control Result Code. [WHCI] table 3-3. */
+enum {
+        UWB_RC_RES_SUCCESS = 0,
+        UWB_RC_RES_FAIL,
+        UWB_RC_RES_FAIL_HARDWARE,
+        UWB_RC_RES_FAIL_NO_SLOTS,
+        UWB_RC_RES_FAIL_BEACON_TOO_LARGE,
+        UWB_RC_RES_FAIL_INVALID_PARAMETER,
+        UWB_RC_RES_FAIL_UNSUPPORTED_PWR_LEVEL,
+        UWB_RC_RES_FAIL_INVALID_IE_DATA,
+        UWB_RC_RES_FAIL_BEACON_SIZE_EXCEEDED,
+        UWB_RC_RES_FAIL_CANCELLED,
+        UWB_RC_RES_FAIL_INVALID_STATE,
+        UWB_RC_RES_FAIL_INVALID_SIZE,
+        UWB_RC_RES_FAIL_ACK_NOT_RECEIVED,
+        UWB_RC_RES_FAIL_NO_MORE_ASIE_NOTIF,
+        UWB_RC_RES_FAIL_TIME_OUT = 255,
+};
+
+/* Confirm event. [WHCI] section 3.1.3.1 etc. */
+struct uwb_rc_evt_confirm {
+        struct uwb_rceb rceb;
+        u8 bResultCode;
+} __attribute__((packed));
+
+/* Device Address Management event. [WHCI] section 3.1.3.2. */
+struct uwb_rc_evt_dev_addr_mgmt {
+        struct uwb_rceb rceb;
+        u8 baAddr[6];
+        u8 bResultCode;
+} __attribute__((packed));
+
+
+/* Get IE Event. [WHCI] section 3.1.3.3. */
+struct uwb_rc_evt_get_ie {
+        struct uwb_rceb rceb;
+        __le16 wIELength;
+        u8 IEData[];
+} __attribute__((packed));
+
+/* Set DRP IE Event. [WHCI] section 3.1.3.7. */
+struct uwb_rc_evt_set_drp_ie {
+        struct uwb_rceb rceb;
+        __le16 wRemainingSpace;
+        u8 bResultCode;
+} __attribute__((packed));
+
+/* Set IE Event. [WHCI] section 3.1.3.8. */
+struct uwb_rc_evt_set_ie {
+        struct uwb_rceb rceb;
+        __le16 RemainingSpace;
+        u8 bResultCode;
+} __attribute__((packed));
+
+/* Scan command. [WHCI] 3.1.3.5. */
+struct uwb_rc_cmd_scan {
+        struct uwb_rccb rccb;
+        u8 bChannelNumber;
+        u8 bScanState;
+        __le16 wStartTime;
+} __attribute__((packed));
+
+/* Set DRP IE command. [WHCI] section 3.1.3.7. */
+struct uwb_rc_cmd_set_drp_ie {
+        struct uwb_rccb rccb;
+        __le16 wIELength;
+        struct uwb_ie_drp IEData[];
+} __attribute__((packed));
+
+/* Set IE command. [WHCI] section 3.1.3.8. */
+struct uwb_rc_cmd_set_ie {
+        struct uwb_rccb rccb;
+        __le16 wIELength;
+        u8 IEData[];
+} __attribute__((packed));
+
+/* Set DAA Energy Mask event. [WHCI 0.96] section 3.1.3.17. */
+struct uwb_rc_evt_set_daa_energy_mask {
+        struct uwb_rceb rceb;
+        __le16 wLength;
+        u8 result;
+} __attribute__((packed));
+
+/* Set Notification Filter Extended event. [WHCI 0.96] section 3.1.3.18. */
+struct uwb_rc_evt_set_notification_filter_ex {
+        struct uwb_rceb rceb;
+        __le16 wLength;
+        u8 result;
+} __attribute__((packed));
+
+/* IE Received notification. [WHCI] section 3.1.4.1. */
+struct uwb_rc_evt_ie_rcv {
+        struct uwb_rceb rceb;
+        struct uwb_dev_addr SrcAddr;
+        __le16 wIELength;
+        u8 IEData[];
+} __attribute__((packed));
+
+/* Type of the received beacon. [WHCI] section 3.1.4.2. */
+enum uwb_rc_beacon_type {
+        UWB_RC_BEACON_TYPE_SCAN = 0,
+        UWB_RC_BEACON_TYPE_NEIGHBOR,
+        UWB_RC_BEACON_TYPE_OL_ALIEN,
+        UWB_RC_BEACON_TYPE_NOL_ALIEN,
+};
+
+/* Beacon received notification. [WHCI] 3.1.4.2. */
+struct uwb_rc_evt_beacon {
+        struct uwb_rceb rceb;
+        u8      bChannelNumber;
+        u8      bBeaconType;
+        __le16  wBPSTOffset;
+        u8      bLQI;
+        u8      bRSSI;
+        __le16  wBeaconInfoLength;
+        u8      BeaconInfo[];
+} __attribute__((packed));
+
+
+/* Beacon Size Change notification. [WHCI] section 3.1.4.3 */
+struct uwb_rc_evt_beacon_size {
+        struct uwb_rceb rceb;
+        __le16 wNewBeaconSize;
+} __attribute__((packed));
+
+
+/* BPOIE Change notification. [WHCI] section 3.1.4.4. */
+struct uwb_rc_evt_bpoie_change {
+        struct uwb_rceb rceb;
+        __le16 wBPOIELength;
+        u8 BPOIE[];
+} __attribute__((packed));
+
+
+/* Beacon Slot Change notification. [WHCI] section 3.1.4.5. */
+struct uwb_rc_evt_bp_slot_change {
+        struct uwb_rceb rceb;
+        u8 slot_info;
+} __attribute__((packed));
+
+static inline int uwb_rc_evt_bp_slot_change_slot_num(
+        const struct uwb_rc_evt_bp_slot_change *evt)
+{
+        return evt->slot_info & 0x7f;
+}
+
+static inline int uwb_rc_evt_bp_slot_change_no_slot(
+        const struct uwb_rc_evt_bp_slot_change *evt)
+{
+        return (evt->slot_info & 0x80) >> 7;
+}
+
+/* BP Switch IE Received notification. [WHCI] section 3.1.4.6. */
+struct uwb_rc_evt_bp_switch_ie_rcv {
+        struct uwb_rceb rceb;
+        struct uwb_dev_addr wSrcAddr;
+        __le16 wIELength;
+        u8 IEData[];
+} __attribute__((packed));
+
+/* DevAddr Conflict notification. [WHCI] section 3.1.4.7. */
+struct uwb_rc_evt_dev_addr_conflict {
+        struct uwb_rceb rceb;
+} __attribute__((packed));
+
+/* DRP notification. [WHCI] section 3.1.4.9. */
+struct uwb_rc_evt_drp {
+        struct uwb_rceb           rceb;
+        struct uwb_dev_addr       src_addr;
+        u8                        reason;
+        u8                        beacon_slot_number;
+        __le16                    ie_length;
+        u8                        ie_data[];
+} __attribute__((packed));
+
+static inline enum uwb_drp_notif_reason uwb_rc_evt_drp_reason(struct uwb_rc_evt_drp *evt)
+{
+        return evt->reason & 0x0f;
+}
+
+
+/* DRP Availability Change notification. [WHCI] section 3.1.4.8. */
+struct uwb_rc_evt_drp_avail {
+        struct uwb_rceb rceb;
+        DECLARE_BITMAP(bmp, UWB_NUM_MAS);
+} __attribute__((packed));
+
+/* BP switch status notification. [WHCI] section 3.1.4.10. */
+struct uwb_rc_evt_bp_switch_status {
+        struct uwb_rceb rceb;
+        u8 status;
+        u8 slot_offset;
+        __le16 bpst_offset;
+        u8 move_countdown;
+} __attribute__((packed));
+
+/* Command Frame Received notification. [WHCI] section 3.1.4.11. */
+struct uwb_rc_evt_cmd_frame_rcv {
+        struct uwb_rceb rceb;
+        __le16 receive_time;
+        struct uwb_dev_addr wSrcAddr;
+        struct uwb_dev_addr wDstAddr;
+        __le16 control;
+        __le16 reserved;
+        __le16 dataLength;
+        u8 data[];
+} __attribute__((packed));
+
+/* Channel Change IE Received notification. [WHCI] section 3.1.4.12. */
+struct uwb_rc_evt_channel_change_ie_rcv {
+        struct uwb_rceb rceb;
+        struct uwb_dev_addr wSrcAddr;
+        __le16 wIELength;
+        u8 IEData[];
+} __attribute__((packed));
+
+/* DAA Energy Detected notification. [WHCI 0.96] section 3.1.4.14. */
+struct uwb_rc_evt_daa_energy_detected {
+        struct uwb_rceb rceb;
+        __le16 wLength;
+        u8 bandID;
+        u8 reserved;
+        u8 toneBmp[16];
+} __attribute__((packed));
+
+
+/**
+ * Radio Control Interface Class Descriptor
+ *
+ *  WUSB 1.0 [8.6.1.2]
+ */
+struct uwb_rc_control_intf_class_desc {
+        u8 bLength;
+        u8 bDescriptorType;
+        __le16 bcdRCIVersion;
+} __attribute__((packed));
+
+#endif /* #ifndef __LINUX__UWB_SPEC_H__ */
diff --git a/include/linux/uwb/umc.h b/include/linux/uwb/umc.h
new file mode 100644
index 000000000000..36a39e34f8d7
--- /dev/null
+++ b/include/linux/uwb/umc.h
@@ -0,0 +1,194 @@
+/*
+ * UWB Multi-interface Controller support.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This file is released under the GPLv2
+ *
+ * UMC (UWB Multi-interface Controller) capabilities (e.g., radio
+ * controller, host controller) are presented as devices on the "umc"
+ * bus.
+ *
+ * The radio controller is not strictly a UMC capability but it's
+ * useful to present it as such.
+ *
+ * References:
+ *
+ *   [WHCI] Wireless Host Controller Interface Specification for
+ *          Certified Wireless Universal Serial Bus, revision 0.95.
+ *
+ * How this works is kind of convoluted but simple. The whci.ko driver
+ * loads when WHCI devices are detected. These WHCI devices expose
+ * many devices in the same PCI function (they couldn't have reused
+ * functions, no), so for each PCI function that exposes these many
+ * devices, whci ceates a umc_dev [whci_probe() -> whci_add_cap()]
+ * with umc_device_create() and adds it to the bus with
+ * umc_device_register().
+ *
+ * umc_device_register() calls device_register() which will push the
+ * bus management code to load your UMC driver's somehting_probe()
+ * that you have registered for that capability code.
+ *
+ * Now when the WHCI device is removed, whci_remove() will go over
+ * each umc_dev assigned to each of the PCI function's capabilities
+ * and through whci_del_cap() call umc_device_unregister() each
+ * created umc_dev. Of course, if you are bound to the device, your
+ * driver's something_remove() will be called.
+ */
+
+#ifndef _LINUX_UWB_UMC_H_
+#define _LINUX_UWB_UMC_H_
+
+#include <linux/device.h>
+#include <linux/pci.h>
+
+/*
+ * UMC capability IDs.
+ *
+ * 0x00 is reserved so use it for the radio controller device.
+ *
+ * [WHCI] table 2-8
+ */
+#define UMC_CAP_ID_WHCI_RC      0x00 /* radio controller */
+#define UMC_CAP_ID_WHCI_WUSB_HC 0x01 /* WUSB host controller */
+
+/**
+ * struct umc_dev - UMC capability device
+ *
+ * @version:  version of the specification this capability conforms to.
+ * @cap_id:   capability ID.
+ * @bar:      PCI Bar (64 bit) where the resource lies
+ * @resource: register space resource.
+ * @irq:      interrupt line.
+ */
+struct umc_dev {
+        u16             version;
+        u8              cap_id;
+        u8              bar;
+        struct resource resource;
+        unsigned        irq;
+        struct device   dev;
+};
+
+#define to_umc_dev(d) container_of(d, struct umc_dev, dev)
+
+/**
+ * struct umc_driver - UMC capability driver
+ * @cap_id: supported capability ID.
+ * @match: driver specific capability matching function.
+ * @match_data: driver specific data for match() (e.g., a
+ * table of pci_device_id's if umc_match_pci_id() is used).
+ */
+struct umc_driver {
+        char *name;
+        u8 cap_id;
+        int (*match)(struct umc_driver *, struct umc_dev *);
+        const void *match_data;
+
+        int  (*probe)(struct umc_dev *);
+        void (*remove)(struct umc_dev *);
+        int  (*suspend)(struct umc_dev *, pm_message_t state);
+        int  (*resume)(struct umc_dev *);
+
+        struct device_driver driver;
+};
+
+#define to_umc_driver(d) container_of(d, struct umc_driver, driver)
+
+extern struct bus_type umc_bus_type;
+
+struct umc_dev *umc_device_create(struct device *parent, int n);
+int __must_check umc_device_register(struct umc_dev *umc);
+void umc_device_unregister(struct umc_dev *umc);
+
+int __must_check __umc_driver_register(struct umc_driver *umc_drv,
+                                       struct module *mod,
+                                       const char *mod_name);
+
+/**
+ * umc_driver_register - register a UMC capabiltity driver.
+ * @umc_drv:  pointer to the driver.
+ */
+static inline int __must_check umc_driver_register(struct umc_driver *umc_drv)
+{
+        return __umc_driver_register(umc_drv, THIS_MODULE, KBUILD_MODNAME);
+}
+void umc_driver_unregister(struct umc_driver *umc_drv);
+
+/*
+ * Utility function you can use to match (umc_driver->match) against a
+ * null-terminated array of 'struct pci_device_id' in
+ * umc_driver->match_data.
+ */
+int umc_match_pci_id(struct umc_driver *umc_drv, struct umc_dev *umc);
+
+/**
+ * umc_parent_pci_dev - return the UMC's parent PCI device or NULL if none
+ * @umc_dev: UMC device whose parent PCI device we are looking for
+ *
+ * DIRTY!!! DON'T RELY ON THIS
+ *
+ * FIXME: This is as dirty as it gets, but we need some way to check
+ * the correct type of umc_dev->parent (so that for example, we can
+ * cast to pci_dev). Casting to pci_dev is necesary because at some
+ * point we need to request resources from the device. Mapping is
+ * easily over come (ioremap and stuff are bus agnostic), but hooking
+ * up to some error handlers (such as pci error handlers) might need
+ * this.
+ *
+ * THIS might (probably will) be removed in the future, so don't count
+ * on it.
+ */
+static inline struct pci_dev *umc_parent_pci_dev(struct umc_dev *umc_dev)
+{
+        struct pci_dev *pci_dev = NULL;
+        if (umc_dev->dev.parent->bus == &pci_bus_type)
+                pci_dev = to_pci_dev(umc_dev->dev.parent);
+        return pci_dev;
+}
+
+/**
+ * umc_dev_get() - reference a UMC device.
+ * @umc_dev: Pointer to UMC device.
+ *
+ * NOTE: we are assuming in this whole scheme that the parent device
+ *       is referenced at _probe() time and unreferenced at _remove()
+ *       time by the parent's subsystem.
+ */
+static inline struct umc_dev *umc_dev_get(struct umc_dev *umc_dev)
+{
+        get_device(&umc_dev->dev);
+        return umc_dev;
+}
+
+/**
+ * umc_dev_put() - unreference a UMC device.
+ * @umc_dev: Pointer to UMC device.
+ */
+static inline void umc_dev_put(struct umc_dev *umc_dev)
+{
+        put_device(&umc_dev->dev);
+}
+
+/**
+ * umc_set_drvdata - set UMC device's driver data.
+ * @umc_dev: Pointer to UMC device.
+ * @data:    Data to set.
+ */
+static inline void umc_set_drvdata(struct umc_dev *umc_dev, void *data)
+{
+        dev_set_drvdata(&umc_dev->dev, data);
+}
+
+/**
+ * umc_get_drvdata - recover UMC device's driver data.
+ * @umc_dev: Pointer to UMC device.
+ */
+static inline void *umc_get_drvdata(struct umc_dev *umc_dev)
+{
+        return dev_get_drvdata(&umc_dev->dev);
+}
+
+int umc_controller_reset(struct umc_dev *umc);
+
+#endif /* #ifndef _LINUX_UWB_UMC_H_ */
diff --git a/include/linux/uwb/whci.h b/include/linux/uwb/whci.h
new file mode 100644
index 000000000000..915ec23042d4
--- /dev/null
+++ b/include/linux/uwb/whci.h
@@ -0,0 +1,117 @@
+/*
+ * Wireless Host Controller Interface for Ultra-Wide-Band and Wireless USB
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ *
+ * References:
+ *   [WHCI] Wireless Host Controller Interface Specification for
+ *          Certified Wireless Universal Serial Bus, revision 0.95.
+ */
+#ifndef _LINUX_UWB_WHCI_H_
+#define _LINUX_UWB_WHCI_H_
+
+#include <linux/pci.h>
+
+/*
+ * UWB interface capability registers (offsets from UWBBASE)
+ *
+ * [WHCI] section 2.2
+ */
+#define UWBCAPINFO      0x00 /* == UWBCAPDATA(0) */
+#  define UWBCAPINFO_TO_N_CAPS(c)       (((c) >> 0)  & 0xFull)
+#define UWBCAPDATA(n)   (8*(n))
+#  define UWBCAPDATA_TO_VERSION(c)      (((c) >> 32) & 0xFFFFull)
+#  define UWBCAPDATA_TO_OFFSET(c)       (((c) >> 18) & 0x3FFFull)
+#  define UWBCAPDATA_TO_BAR(c)          (((c) >> 16) & 0x3ull)
+#  define UWBCAPDATA_TO_SIZE(c)         ((((c) >> 8) & 0xFFull) * sizeof(u32))
+#  define UWBCAPDATA_TO_CAP_ID(c)       (((c) >> 0)  & 0xFFull)
+
+/* Size of the WHCI capability data (including the RC capability) for
+   a device with n capabilities. */
+#define UWBCAPDATA_SIZE(n) (8 + 8*(n))
+
+
+/*
+ * URC registers (offsets from URCBASE)
+ *
+ * [WHCI] section 2.3
+ */
+#define URCCMD          0x00
+#  define URCCMD_RESET          (1 << 31)  /* UMC Hardware reset */
+#  define URCCMD_RS             (1 << 30)  /* Run/Stop */
+#  define URCCMD_EARV           (1 << 29)  /* Event Address Register Valid */
+#  define URCCMD_ACTIVE         (1 << 15)  /* Command is active */
+#  define URCCMD_IWR            (1 << 14)  /* Interrupt When Ready */
+#  define URCCMD_SIZE_MASK      0x00000fff /* Command size mask */
+#define URCSTS          0x04
+#  define URCSTS_EPS            (1 << 17)  /* Event Processing Status */
+#  define URCSTS_HALTED         (1 << 16)  /* RC halted */
+#  define URCSTS_HSE            (1 << 10)  /* Host System Error...fried */
+#  define URCSTS_ER             (1 <<  9)  /* Event Ready */
+#  define URCSTS_RCI            (1 <<  8)  /* Ready for Command Interrupt */
+#  define URCSTS_INT_MASK       0x00000700 /* URC interrupt sources */
+#  define URCSTS_ISI            0x000000ff /* Interrupt Source Identification */
+#define URCINTR         0x08
+#  define URCINTR_EN_ALL        0x000007ff /* Enable all interrupt sources */
+#define URCCMDADDR      0x10
+#define URCEVTADDR      0x18
+#  define URCEVTADDR_OFFSET_MASK 0xfff    /* Event pointer offset mask */
+
+
+/** Write 32 bit @value to little endian register at @addr */
+static inline
+void le_writel(u32 value, void __iomem *addr)
+{
+        iowrite32(value, addr);
+}
+
+
+/** Read from 32 bit little endian register at @addr */
+static inline
+u32 le_readl(void __iomem *addr)
+{
+        return ioread32(addr);
+}
+
+
+/** Write 64 bit @value to little endian register at @addr */
+static inline
+void le_writeq(u64 value, void __iomem *addr)
+{
+        iowrite32(value, addr);
+        iowrite32(value >> 32, addr + 4);
+}
+
+
+/** Read from 64 bit little endian register at @addr */
+static inline
+u64 le_readq(void __iomem *addr)
+{
+        u64 value;
+        value  = ioread32(addr);
+        value |= (u64)ioread32(addr + 4) << 32;
+        return value;
+}
+
+extern int whci_wait_for(struct device *dev, u32 __iomem *reg,
+                         u32 mask, u32 result,
+                         unsigned long max_ms,  const char *tag);
+
+#endif /* #ifndef _LINUX_UWB_WHCI_H_ */
diff --git a/include/linux/wlp.h b/include/linux/wlp.h
new file mode 100644
index 000000000000..033545e145c7
--- /dev/null
+++ b/include/linux/wlp.h
@@ -0,0 +1,735 @@
+/*
+ * WiMedia Logical Link Control Protocol (WLP)
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Reinette Chatre <reinette.chatre@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ *
+ * - Does not (yet) include support for WLP control frames
+ *   WLP Draft 0.99 [6.5].
+ *
+ *   A visual representation of the data structures.
+ *
+ *                              wssidB      wssidB
+ *                               ^           ^
+ *                               |           |
+ *                              wssidA      wssidA
+ *   wlp interface {             ^           ^
+ *       ...                     |           |
+ *       ...               ...  wssid      wssid ...
+ *       wlp --- ...             |           |
+ *   };          neighbors --> neighbA --> neighbB
+ *               ...
+ *               wss
+ *               ...
+ *               eda cache  --> neighborA --> neighborB --> neighborC ...
+ */
+
+#ifndef __LINUX__WLP_H_
+#define __LINUX__WLP_H_
+
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/list.h>
+#include <linux/uwb.h>
+
+/**
+ * WLP Protocol ID
+ * WLP Draft 0.99 [6.2]
+ *
+ * The MUX header for all WLP frames
+ */
+#define WLP_PROTOCOL_ID 0x0100
+
+/**
+ * WLP Version
+ * WLP version placed in the association frames (WLP 0.99 [6.6])
+ */
+#define WLP_VERSION 0x10
+
+/**
+ * Bytes needed to print UUID as string
+ */
+#define WLP_WSS_UUID_STRSIZE 48
+
+/**
+ * Bytes needed to print nonce as string
+ */
+#define WLP_WSS_NONCE_STRSIZE 48
+
+
+/**
+ * Size used for WLP name size
+ *
+ * The WSS name is set to 65 bytes, 1 byte larger than the maximum
+ * allowed by the WLP spec. This is to have a null terminated string
+ * for display to the user. A maximum of 64 bytes will still be used
+ * when placing the WSS name field in association frames.
+ */
+#define WLP_WSS_NAME_SIZE 65
+
+/**
+ * Number of bytes added by WLP to data frame
+ *
+ * A data frame transmitted from a host will be placed in a Standard or
+ * Abbreviated WLP frame. These have an extra 4 bytes of header (struct
+ * wlp_frame_std_abbrv_hdr).
+ * When the stack sends this data frame for transmission it needs to ensure
+ * there is enough headroom for this header.
+ */
+#define WLP_DATA_HLEN 4
+
+/**
+ * State of device regarding WLP Service Set
+ *
+ * WLP_WSS_STATE_NONE: the host does not participate in any WSS
+ * WLP_WSS_STATE_PART_ENROLLED: used as part of the enrollment sequence
+ *                            ("Partial Enroll"). This state is used to
+ *                            indicate the first part of enrollment that is
+ *                            unsecure. If the WSS is unsecure then the
+ *                            state will promptly go to WLP_WSS_STATE_ENROLLED,
+ *                            if the WSS is not secure then the enrollment
+ *                            procedure is a few more steps before we are
+ *                            enrolled.
+ * WLP_WSS_STATE_ENROLLED: the host is enrolled in a WSS
+ * WLP_WSS_STATE_ACTIVE: WSS is activated
+ * WLP_WSS_STATE_CONNECTED: host is connected to neighbor in WSS
+ *
+ */
+enum wlp_wss_state {
+        WLP_WSS_STATE_NONE = 0,
+        WLP_WSS_STATE_PART_ENROLLED,
+        WLP_WSS_STATE_ENROLLED,
+        WLP_WSS_STATE_ACTIVE,
+        WLP_WSS_STATE_CONNECTED,
+};
+
+/**
+ * WSS Secure status
+ * WLP 0.99 Table 6
+ *
+ * Set to one if the WSS is secure, zero if it is not secure
+ */
+enum wlp_wss_sec_status {
+        WLP_WSS_UNSECURE = 0,
+        WLP_WSS_SECURE,
+};
+
+/**
+ * WLP frame type
+ * WLP Draft 0.99 [6.2 Table 1]
+ */
+enum wlp_frame_type {
+        WLP_FRAME_STANDARD = 0,
+        WLP_FRAME_ABBREVIATED,
+        WLP_FRAME_CONTROL,
+        WLP_FRAME_ASSOCIATION,
+};
+
+/**
+ * WLP Association Message Type
+ * WLP Draft 0.99 [6.6.1.2 Table 8]
+ */
+enum wlp_assoc_type {
+        WLP_ASSOC_D1 = 2,
+        WLP_ASSOC_D2 = 3,
+        WLP_ASSOC_M1 = 4,
+        WLP_ASSOC_M2 = 5,
+        WLP_ASSOC_M3 = 7,
+        WLP_ASSOC_M4 = 8,
+        WLP_ASSOC_M5 = 9,
+        WLP_ASSOC_M6 = 10,
+        WLP_ASSOC_M7 = 11,
+        WLP_ASSOC_M8 = 12,
+        WLP_ASSOC_F0 = 14,
+        WLP_ASSOC_E1 = 32,
+        WLP_ASSOC_E2 = 33,
+        WLP_ASSOC_C1 = 34,
+        WLP_ASSOC_C2 = 35,
+        WLP_ASSOC_C3 = 36,
+        WLP_ASSOC_C4 = 37,
+};
+
+/**
+ * WLP Attribute Type
+ * WLP Draft 0.99 [6.6.1 Table 6]
+ */
+enum wlp_attr_type {
+        WLP_ATTR_AUTH           = 0x1005, /* Authenticator */
+        WLP_ATTR_DEV_NAME       = 0x1011, /* Device Name */
+        WLP_ATTR_DEV_PWD_ID     = 0x1012, /* Device Password ID */
+        WLP_ATTR_E_HASH1        = 0x1014, /* E-Hash1 */
+        WLP_ATTR_E_HASH2        = 0x1015, /* E-Hash2 */
+        WLP_ATTR_E_SNONCE1      = 0x1016, /* E-SNonce1 */
+        WLP_ATTR_E_SNONCE2      = 0x1017, /* E-SNonce2 */
+        WLP_ATTR_ENCR_SET       = 0x1018, /* Encrypted Settings */
+        WLP_ATTR_ENRL_NONCE     = 0x101A, /* Enrollee Nonce */
+        WLP_ATTR_KEYWRAP_AUTH   = 0x101E, /* Key Wrap Authenticator */
+        WLP_ATTR_MANUF          = 0x1021, /* Manufacturer */
+        WLP_ATTR_MSG_TYPE       = 0x1022, /* Message Type */
+        WLP_ATTR_MODEL_NAME     = 0x1023, /* Model Name */
+        WLP_ATTR_MODEL_NR       = 0x1024, /* Model Number */
+        WLP_ATTR_PUB_KEY        = 0x1032, /* Public Key */
+        WLP_ATTR_REG_NONCE      = 0x1039, /* Registrar Nonce */
+        WLP_ATTR_R_HASH1        = 0x103D, /* R-Hash1 */
+        WLP_ATTR_R_HASH2        = 0x103E, /* R-Hash2 */
+        WLP_ATTR_R_SNONCE1      = 0x103F, /* R-SNonce1 */
+        WLP_ATTR_R_SNONCE2      = 0x1040, /* R-SNonce2 */
+        WLP_ATTR_SERIAL         = 0x1042, /* Serial number */
+        WLP_ATTR_UUID_E         = 0x1047, /* UUID-E */
+        WLP_ATTR_UUID_R         = 0x1048, /* UUID-R */
+        WLP_ATTR_PRI_DEV_TYPE   = 0x1054, /* Primary Device Type */
+        WLP_ATTR_SEC_DEV_TYPE   = 0x1055, /* Secondary Device Type */
+        WLP_ATTR_PORT_DEV       = 0x1056, /* Portable Device */
+        WLP_ATTR_APP_EXT        = 0x1058, /* Application Extension */
+        WLP_ATTR_WLP_VER        = 0x2000, /* WLP Version */
+        WLP_ATTR_WSSID          = 0x2001, /* WSSID */
+        WLP_ATTR_WSS_NAME       = 0x2002, /* WSS Name */
+        WLP_ATTR_WSS_SEC_STAT   = 0x2003, /* WSS Secure Status */
+        WLP_ATTR_WSS_BCAST      = 0x2004, /* WSS Broadcast Address */
+        WLP_ATTR_WSS_M_KEY      = 0x2005, /* WSS Master Key */
+        WLP_ATTR_ACC_ENRL       = 0x2006, /* Accepting Enrollment */
+        WLP_ATTR_WSS_INFO       = 0x2007, /* WSS Information */
+        WLP_ATTR_WSS_SEL_MTHD   = 0x2008, /* WSS Selection Method */
+        WLP_ATTR_ASSC_MTHD_LIST = 0x2009, /* Association Methods List */
+        WLP_ATTR_SEL_ASSC_MTHD  = 0x200A, /* Selected Association Method */
+        WLP_ATTR_ENRL_HASH_COMM = 0x200B, /* Enrollee Hash Commitment */
+        WLP_ATTR_WSS_TAG        = 0x200C, /* WSS Tag */
+        WLP_ATTR_WSS_VIRT       = 0x200D, /* WSS Virtual EUI-48 */
+        WLP_ATTR_WLP_ASSC_ERR   = 0x200E, /* WLP Association Error */
+        WLP_ATTR_VNDR_EXT       = 0x200F, /* Vendor Extension */
+};
+
+/**
+ * WLP Category ID of primary/secondary device
+ * WLP Draft 0.99 [6.6.1.8 Table 12]
+ */
+enum wlp_dev_category_id {
+        WLP_DEV_CAT_COMPUTER = 1,
+        WLP_DEV_CAT_INPUT,
+        WLP_DEV_CAT_PRINT_SCAN_FAX_COPIER,
+        WLP_DEV_CAT_CAMERA,
+        WLP_DEV_CAT_STORAGE,
+        WLP_DEV_CAT_INFRASTRUCTURE,
+        WLP_DEV_CAT_DISPLAY,
+        WLP_DEV_CAT_MULTIM,
+        WLP_DEV_CAT_GAMING,
+        WLP_DEV_CAT_TELEPHONE,
+        WLP_DEV_CAT_OTHER = 65535,
+};
+
+/**
+ * WLP WSS selection method
+ * WLP Draft 0.99 [6.6.1.6 Table 10]
+ */
+enum wlp_wss_sel_mthd {
+        WLP_WSS_ENRL_SELECT = 1,        /* Enrollee selects */
+        WLP_WSS_REG_SELECT,             /* Registrar selects */
+};
+
+/**
+ * WLP association error values
+ * WLP Draft 0.99 [6.6.1.5 Table 9]
+ */
+enum wlp_assc_error {
+        WLP_ASSOC_ERROR_NONE,
+        WLP_ASSOC_ERROR_AUTH,           /* Authenticator Failure */
+        WLP_ASSOC_ERROR_ROGUE,          /* Rogue activity suspected */
+        WLP_ASSOC_ERROR_BUSY,           /* Device busy */
+        WLP_ASSOC_ERROR_LOCK,           /* Setup Locked */
+        WLP_ASSOC_ERROR_NOT_READY,      /* Registrar not ready */
+        WLP_ASSOC_ERROR_INV,            /* Invalid WSS selection */
+        WLP_ASSOC_ERROR_MSG_TIME,       /* Message timeout */
+        WLP_ASSOC_ERROR_ENR_TIME,       /* Enrollment session timeout */
+        WLP_ASSOC_ERROR_PW,             /* Device password invalid */
+        WLP_ASSOC_ERROR_VER,            /* Unsupported version */
+        WLP_ASSOC_ERROR_INT,            /* Internal error */
+        WLP_ASSOC_ERROR_UNDEF,          /* Undefined error */
+        WLP_ASSOC_ERROR_NUM,            /* Numeric comparison failure */
+        WLP_ASSOC_ERROR_WAIT,           /* Waiting for user input */
+};
+
+/**
+ * WLP Parameters
+ * WLP 0.99 [7.7]
+ */
+enum wlp_parameters {
+        WLP_PER_MSG_TIMEOUT = 15,       /* Seconds to wait for response to
+                                           association message. */
+};
+
+/**
+ * WLP IE
+ *
+ * The WLP IE should be included in beacons by all devices.
+ *
+ * The driver can set only a few of the fields in this information element,
+ * most fields are managed by the device self. When the driver needs to set
+ * a field it will only provide values for the fields of interest, the rest
+ * will be filled with zeroes. The fields of interest are:
+ *
+ * Element ID
+ * Length
+ * Capabilities (only to include WSSID Hash list length)
+ * WSSID Hash List fields
+ *
+ * WLP 0.99 [6.7]
+ *
+ * Only the fields that will be used are detailed in this structure, rest
+ * are not detailed or marked as "notused".
+ */
+struct wlp_ie {
+        struct uwb_ie_hdr hdr;
+        __le16 capabilities;
+        __le16 cycle_param;
+        __le16 acw_anchor_addr;
+        u8 wssid_hash_list[];
+} __attribute__((packed));
+
+static inline int wlp_ie_hash_length(struct wlp_ie *ie)
+{
+        return (le16_to_cpu(ie->capabilities) >> 12) & 0xf;
+}
+
+static inline void wlp_ie_set_hash_length(struct wlp_ie *ie, int hash_length)
+{
+        u16 caps = le16_to_cpu(ie->capabilities);
+        caps = (caps & ~(0xf << 12)) | (hash_length << 12);
+        ie->capabilities = cpu_to_le16(caps);
+}
+
+/**
+ * WLP nonce
+ * WLP Draft 0.99 [6.6.1 Table 6]
+ *
+ * A 128-bit random number often used (E-SNonce1, E-SNonce2, Enrollee
+ * Nonce, Registrar Nonce, R-SNonce1, R-SNonce2). It is passed to HW so
+ * it is packed.
+ */
+struct wlp_nonce {
+        u8 data[16];
+} __attribute__((packed));
+
+/**
+ * WLP UUID
+ * WLP Draft 0.99 [6.6.1 Table 6]
+ *
+ * Universally Unique Identifier (UUID) encoded as an octet string in the
+ * order the octets are shown in string representation in RFC4122. A UUID
+ * is often used (UUID-E, UUID-R, WSSID). It is passed to HW so it is packed.
+ */
+struct wlp_uuid {
+        u8 data[16];
+} __attribute__((packed));
+
+
+/**
+ * Primary and secondary device type attributes
+ * WLP Draft 0.99 [6.6.1.8]
+ */
+struct wlp_dev_type {
+        enum wlp_dev_category_id category:16;
+        u8 OUI[3];
+        u8 OUIsubdiv;
+        __le16 subID;
+} __attribute__((packed));
+
+/**
+ * WLP frame header
+ * WLP Draft 0.99 [6.2]
+ */
+struct wlp_frame_hdr {
+        __le16 mux_hdr;                 /* WLP_PROTOCOL_ID */
+        enum wlp_frame_type type:8;
+} __attribute__((packed));
+
+/**
+ * WLP attribute field header
+ * WLP Draft 0.99 [6.6.1]
+ *
+ * Header of each attribute found in an association frame
+ */
+struct wlp_attr_hdr {
+        __le16 type;
+        __le16 length;
+} __attribute__((packed));
+
+/**
+ * Device information commonly used together
+ *
+ * Each of these device information elements has a specified range in which it
+ * should fit (WLP 0.99 [Table 6]). This range provided in the spec does not
+ * include the termination null '\0' character (when used in the
+ * association protocol the attribute fields are accompanied
+ * with a "length" field so the full range from the spec can be used for
+ * the value). We thus allocate an extra byte to be able to store a string
+ * of max length with a terminating '\0'.
+ */
+struct wlp_device_info {
+        char name[33];
+        char model_name[33];
+        char manufacturer[65];
+        char model_nr[33];
+        char serial[33];
+        struct wlp_dev_type prim_dev_type;
+};
+
+/**
+ * Macros for the WLP attributes
+ *
+ * There are quite a few attributes (total is 43). The attribute layout can be
+ * in one of three categories: one value, an array, an enum forced to 8 bits.
+ * These macros help with their definitions.
+ */
+#define wlp_attr(type, name)                                            \
+struct wlp_attr_##name {                                                \
+        struct wlp_attr_hdr hdr;                                        \
+        type name;                                                      \
+} __attribute__((packed));
+
+#define wlp_attr_array(type, name)                                      \
+struct wlp_attr_##name {                                                \
+        struct wlp_attr_hdr hdr;                                        \
+        type name[];                                                    \
+} __attribute__((packed));
+
+/**
+ * WLP association attribute fields
+ * WLP Draft 0.99 [6.6.1 Table 6]
+ *
+ * Attributes appear in same order as the Table in the spec
+ * FIXME Does not define all attributes yet
+ */
+
+/* Device name: Friendly name of sending device */
+wlp_attr_array(u8, dev_name)
+
+/* Enrollee Nonce: Random number generated by enrollee for an enrollment
+ * session */
+wlp_attr(struct wlp_nonce, enonce)
+
+/* Manufacturer name: Name of manufacturer of the sending device */
+wlp_attr_array(u8, manufacturer)
+
+/* WLP Message Type */
+wlp_attr(u8, msg_type)
+
+/* WLP Model name: Model name of sending device */
+wlp_attr_array(u8, model_name)
+
+/* WLP Model number: Model number of sending device */
+wlp_attr_array(u8, model_nr)
+
+/* Registrar Nonce: Random number generated by registrar for an enrollment
+ * session */
+wlp_attr(struct wlp_nonce, rnonce)
+
+/* Serial number of device */
+wlp_attr_array(u8, serial)
+
+/* UUID of enrollee */
+wlp_attr(struct wlp_uuid, uuid_e)
+
+/* UUID of registrar */
+wlp_attr(struct wlp_uuid, uuid_r)
+
+/* WLP Primary device type */
+wlp_attr(struct wlp_dev_type, prim_dev_type)
+
+/* WLP Secondary device type */
+wlp_attr(struct wlp_dev_type, sec_dev_type)
+
+/* WLP protocol version */
+wlp_attr(u8, version)
+
+/* WLP service set identifier */
+wlp_attr(struct wlp_uuid, wssid)
+
+/* WLP WSS name */
+wlp_attr_array(u8, wss_name)
+
+/* WLP WSS Secure Status */
+wlp_attr(u8, wss_sec_status)
+
+/* WSS Broadcast Address */
+wlp_attr(struct uwb_mac_addr, wss_bcast)
+
+/* WLP Accepting Enrollment */
+wlp_attr(u8, accept_enrl)
+
+/**
+ * WSS information attributes
+ * WLP Draft 0.99 [6.6.3 Table 15]
+ */
+struct wlp_wss_info {
+        struct wlp_attr_wssid wssid;
+        struct wlp_attr_wss_name name;
+        struct wlp_attr_accept_enrl accept;
+        struct wlp_attr_wss_sec_status sec_stat;
+        struct wlp_attr_wss_bcast bcast;
+} __attribute__((packed));
+
+/* WLP WSS Information */
+wlp_attr_array(struct wlp_wss_info, wss_info)
+
+/* WLP WSS Selection method */
+wlp_attr(u8, wss_sel_mthd)
+
+/* WLP WSS tag */
+wlp_attr(u8, wss_tag)
+
+/* WSS Virtual Address */
+wlp_attr(struct uwb_mac_addr, wss_virt)
+
+/* WLP association error */
+wlp_attr(u8, wlp_assc_err)
+
+/**
+ * WLP standard and abbreviated frames
+ *
+ * WLP Draft 0.99 [6.3] and [6.4]
+ *
+ * The difference between the WLP standard frame and the WLP
+ * abbreviated frame is that the standard frame includes the src
+ * and dest addresses from the Ethernet header, the abbreviated frame does
+ * not.
+ * The src/dest (as well as the type/length and client data) are already
+ * defined as part of the Ethernet header, we do not do this here.
+ * From this perspective the standard and abbreviated frames appear the
+ * same - they will be treated differently though.
+ *
+ * The size of this header is also captured in WLP_DATA_HLEN to enable
+ * interfaces to prepare their headroom.
+ */
+struct wlp_frame_std_abbrv_hdr {
+        struct wlp_frame_hdr hdr;
+        u8 tag;
+} __attribute__((packed));
+
+/**
+ * WLP association frames
+ *
+ * WLP Draft 0.99 [6.6]
+ */
+struct wlp_frame_assoc {
+        struct wlp_frame_hdr hdr;
+        enum wlp_assoc_type type:8;
+        struct wlp_attr_version version;
+        struct wlp_attr_msg_type msg_type;
+        u8 attr[];
+} __attribute__((packed));
+
+/* Ethernet to dev address mapping */
+struct wlp_eda {
+        spinlock_t lock;
+        struct list_head cache; /* Eth<->Dev Addr cache */
+};
+
+/**
+ * WSS information temporary storage
+ *
+ * This information is only stored temporarily during discovery. It should
+ * not be stored unless the device is enrolled in the advertised WSS. This
+ * is done mainly because we follow the letter of the spec in this regard.
+ * See WLP 0.99 [7.2.3].
+ * When the device does become enrolled in a WSS the WSS information will
+ * be stored as part of the more comprehensive struct wlp_wss.
+ */
+struct wlp_wss_tmp_info {
+        char name[WLP_WSS_NAME_SIZE];
+        u8 accept_enroll;
+        u8 sec_status;
+        struct uwb_mac_addr bcast;
+};
+
+struct wlp_wssid_e {
+        struct list_head node;
+        struct wlp_uuid wssid;
+        struct wlp_wss_tmp_info *info;
+};
+
+/**
+ * A cache entry of WLP neighborhood
+ *
+ * @node: head of list is wlp->neighbors
+ * @wssid: list of wssids of this neighbor, element is wlp_wssid_e
+ * @info:  temporary storage for information learned during discovery. This
+ *         storage is used together with the wssid_e temporary storage
+ *         during discovery.
+ */
+struct wlp_neighbor_e {
+        struct list_head node;
+        struct wlp_uuid uuid;
+        struct uwb_dev *uwb_dev;
+        struct list_head wssid; /* Elements are wlp_wssid_e */
+        struct wlp_device_info *info;
+};
+
+struct wlp;
+/**
+ * Information for an association session in progress.
+ *
+ * @exp_message: The type of the expected message. Both this message and a
+ *               F0 message (which can be sent in response to any
+ *               association frame) will be accepted as a valid message for
+ *               this session.
+ * @cb:          The function that will be called upon receipt of this
+ *               message.
+ * @cb_priv:     Private data of callback
+ * @data:        Data used in association process (always a sk_buff?)
+ * @neighbor:    Address of neighbor with which association session is in
+ *               progress.
+ */
+struct wlp_session {
+        enum wlp_assoc_type exp_message;
+        void (*cb)(struct wlp *);
+        void *cb_priv;
+        void *data;
+        struct uwb_dev_addr neighbor_addr;
+};
+
+/**
+ * WLP Service Set
+ *
+ * @mutex: used to protect entire WSS structure.
+ *
+ * @name: The WSS name is set to 65 bytes, 1 byte larger than the maximum
+ *        allowed by the WLP spec. This is to have a null terminated string
+ *        for display to the user. A maximum of 64 bytes will still be used
+ *        when placing the WSS name field in association frames.
+ *
+ * @accept_enroll: Accepting enrollment: Set to one if registrar is
+ *                 accepting enrollment in WSS, or zero otherwise.
+ *
+ * Global and local information for each WSS in which we are enrolled.
+ * WLP 0.99 Section 7.2.1 and Section 7.2.2
+ */
+struct wlp_wss {
+        struct mutex mutex;
+        struct kobject kobj;
+        /* Global properties. */
+        struct wlp_uuid wssid;
+        u8 hash;
+        char name[WLP_WSS_NAME_SIZE];
+        struct uwb_mac_addr bcast;
+        u8 secure_status:1;
+        u8 master_key[16];
+        /* Local properties. */
+        u8 tag;
+        struct uwb_mac_addr virtual_addr;
+        /* Extra */
+        u8 accept_enroll:1;
+        enum wlp_wss_state state;
+};
+
+/**
+ * WLP main structure
+ * @mutex: protect changes to WLP structure. We only allow changes to the
+ *         uuid, so currently this mutex only protects this field.
+ */
+struct wlp {
+        struct mutex mutex;
+        struct uwb_rc *rc;              /* UWB radio controller */
+        struct uwb_pal pal;
+        struct wlp_eda eda;
+        struct wlp_uuid uuid;
+        struct wlp_session *session;
+        struct wlp_wss wss;
+        struct mutex nbmutex; /* Neighbor mutex protects neighbors list */
+        struct list_head neighbors; /* Elements are wlp_neighbor_e */
+        struct uwb_notifs_handler uwb_notifs_handler;
+        struct wlp_device_info *dev_info;
+        void (*fill_device_info)(struct wlp *wlp, struct wlp_device_info *info);
+        int (*xmit_frame)(struct wlp *, struct sk_buff *,
+                          struct uwb_dev_addr *);
+        void (*stop_queue)(struct wlp *);
+        void (*start_queue)(struct wlp *);
+};
+
+/* sysfs */
+
+
+struct wlp_wss_attribute {
+        struct attribute attr;
+        ssize_t (*show)(struct wlp_wss *wss, char *buf);
+        ssize_t (*store)(struct wlp_wss *wss, const char *buf, size_t count);
+};
+
+#define WSS_ATTR(_name, _mode, _show, _store) \
+static struct wlp_wss_attribute wss_attr_##_name = __ATTR(_name, _mode, \
+                                                          _show, _store)
+
+extern int wlp_setup(struct wlp *, struct uwb_rc *);
+extern void wlp_remove(struct wlp *);
+extern ssize_t wlp_neighborhood_show(struct wlp *, char *);
+extern int wlp_wss_setup(struct net_device *, struct wlp_wss *);
+extern void wlp_wss_remove(struct wlp_wss *);
+extern ssize_t wlp_wss_activate_show(struct wlp_wss *, char *);
+extern ssize_t wlp_wss_activate_store(struct wlp_wss *, const char *, size_t);
+extern ssize_t wlp_eda_show(struct wlp *, char *);
+extern ssize_t wlp_eda_store(struct wlp *, const char *, size_t);
+extern ssize_t wlp_uuid_show(struct wlp *, char *);
+extern ssize_t wlp_uuid_store(struct wlp *, const char *, size_t);
+extern ssize_t wlp_dev_name_show(struct wlp *, char *);
+extern ssize_t wlp_dev_name_store(struct wlp *, const char *, size_t);
+extern ssize_t wlp_dev_manufacturer_show(struct wlp *, char *);
+extern ssize_t wlp_dev_manufacturer_store(struct wlp *, const char *, size_t);
+extern ssize_t wlp_dev_model_name_show(struct wlp *, char *);
+extern ssize_t wlp_dev_model_name_store(struct wlp *, const char *, size_t);
+extern ssize_t wlp_dev_model_nr_show(struct wlp *, char *);
+extern ssize_t wlp_dev_model_nr_store(struct wlp *, const char *, size_t);
+extern ssize_t wlp_dev_serial_show(struct wlp *, char *);
+extern ssize_t wlp_dev_serial_store(struct wlp *, const char *, size_t);
+extern ssize_t wlp_dev_prim_category_show(struct wlp *, char *);
+extern ssize_t wlp_dev_prim_category_store(struct wlp *, const char *,
+                                           size_t);
+extern ssize_t wlp_dev_prim_OUI_show(struct wlp *, char *);
+extern ssize_t wlp_dev_prim_OUI_store(struct wlp *, const char *, size_t);
+extern ssize_t wlp_dev_prim_OUI_sub_show(struct wlp *, char *);
+extern ssize_t wlp_dev_prim_OUI_sub_store(struct wlp *, const char *,
+                                          size_t);
+extern ssize_t wlp_dev_prim_subcat_show(struct wlp *, char *);
+extern ssize_t wlp_dev_prim_subcat_store(struct wlp *, const char *,
+                                         size_t);
+extern int wlp_receive_frame(struct device *, struct wlp *, struct sk_buff *,
+                             struct uwb_dev_addr *);
+extern int wlp_prepare_tx_frame(struct device *, struct wlp *,
+                               struct sk_buff *, struct uwb_dev_addr *);
+void wlp_reset_all(struct wlp *wlp);
+
+/**
+ * Initialize WSS
+ */
+static inline
+void wlp_wss_init(struct wlp_wss *wss)
+{
+        mutex_init(&wss->mutex);
+}
+
+static inline
+void wlp_init(struct wlp *wlp)
+{
+        INIT_LIST_HEAD(&wlp->neighbors);
+        mutex_init(&wlp->mutex);
+        mutex_init(&wlp->nbmutex);
+        wlp_wss_init(&wlp->wss);
+}
+
+
+#endif /* #ifndef __LINUX__WLP_H_ */
diff --git a/init/main.c b/init/main.c
index 3e17a3bafe60..672ae75b2059 100644
--- a/init/main.c
+++ b/init/main.c
@@ -52,6 +52,7 @@
 #include <linux/key.h>
 #include <linux/unwind.h>
 #include <linux/buffer_head.h>
+#include <linux/page_cgroup.h>
 #include <linux/debug_locks.h>
 #include <linux/debugobjects.h>
 #include <linux/lockdep.h>
@@ -647,6 +648,7 @@ asmlinkage void __init start_kernel(void)
         vmalloc_init();
         vfs_caches_init_early();
         cpuset_init_early();
+        page_cgroup_init();
         mem_init();
         enable_debug_pagealloc();
         cpu_hotplug_init();
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index 4895fde4eb93..10b5092e9bfe 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -76,6 +76,7 @@ void dynamic_irq_cleanup(unsigned int irq)
         desc->chip_data = NULL;
         desc->handle_irq = handle_bad_irq;
         desc->chip = &no_irq_chip;
+        desc->name = NULL;
         spin_unlock_irqrestore(&desc->lock, flags);
 }
 
@@ -127,7 +128,7 @@ int set_irq_type(unsigned int irq, unsigned int type)
                 return 0;
 
         spin_lock_irqsave(&desc->lock, flags);
-        ret = __irq_set_trigger(desc, irq, flags);
+        ret = __irq_set_trigger(desc, irq, type);
         spin_unlock_irqrestore(&desc->lock, flags);
         return ret;
 }
diff --git a/kernel/rcupdate.c b/kernel/rcupdate.c
index 467d5940f624..ad63af8b2521 100644
--- a/kernel/rcupdate.c
+++ b/kernel/rcupdate.c
@@ -119,18 +119,19 @@ static void _rcu_barrier(enum rcu_barrier type)
         /* Take cpucontrol mutex to protect against CPU hotplug */
         mutex_lock(&rcu_barrier_mutex);
         init_completion(&rcu_barrier_completion);
-        atomic_set(&rcu_barrier_cpu_count, 0);
         /*
-         * The queueing of callbacks in all CPUs must be atomic with
-         * respect to RCU, otherwise one CPU may queue a callback,
-         * wait for a grace period, decrement barrier count and call
-         * complete(), while other CPUs have not yet queued anything.
-         * So, we need to make sure that grace periods cannot complete
-         * until all the callbacks are queued.
+         * Initialize rcu_barrier_cpu_count to 1, then invoke
+         * rcu_barrier_func() on each CPU, so that each CPU also has
+         * incremented rcu_barrier_cpu_count.  Only then is it safe to
+         * decrement rcu_barrier_cpu_count -- otherwise the first CPU
+         * might complete its grace period before all of the other CPUs
+         * did their increment, causing this function to return too
+         * early.
          */
-        rcu_read_lock();
+        atomic_set(&rcu_barrier_cpu_count, 1);
         on_each_cpu(rcu_barrier_func, (void *)type, 1);
-        rcu_read_unlock();
+        if (atomic_dec_and_test(&rcu_barrier_cpu_count))
+                complete(&rcu_barrier_completion);
         wait_for_completion(&rcu_barrier_completion);
         mutex_unlock(&rcu_barrier_mutex);
 }
diff --git a/kernel/sched.c b/kernel/sched.c
index d906f72b42d2..945a97b9600d 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -819,6 +819,13 @@ const_debug unsigned int sysctl_sched_nr_migrate = 32;
 unsigned int sysctl_sched_shares_ratelimit = 250000;
 
 /*
+ * Inject some fuzzyness into changing the per-cpu group shares
+ * this avoids remote rq-locks at the expense of fairness.
+ * default: 4
+ */
+unsigned int sysctl_sched_shares_thresh = 4;
+
+/*
  * period over which we measure -rt task cpu usage in us.
  * default: 1s
  */
@@ -1454,8 +1461,8 @@ static void __set_se_shares(struct sched_entity *se, unsigned long shares);
  * Calculate and set the cpu's group shares.
  */
 static void
-__update_group_shares_cpu(struct task_group *tg, int cpu,
-                          unsigned long sd_shares, unsigned long sd_rq_weight)
+update_group_shares_cpu(struct task_group *tg, int cpu,
+                        unsigned long sd_shares, unsigned long sd_rq_weight)
 {
         int boost = 0;
         unsigned long shares;
@@ -1486,19 +1493,23 @@ __update_group_shares_cpu(struct task_group *tg, int cpu,
          *
          */
         shares = (sd_shares * rq_weight) / (sd_rq_weight + 1);
+        shares = clamp_t(unsigned long, shares, MIN_SHARES, MAX_SHARES);
 
-        /*
-         * record the actual number of shares, not the boosted amount.
-         */
-        tg->cfs_rq[cpu]->shares = boost ? 0 : shares;
-        tg->cfs_rq[cpu]->rq_weight = rq_weight;
+        if (abs(shares - tg->se[cpu]->load.weight) >
+                        sysctl_sched_shares_thresh) {
+                struct rq *rq = cpu_rq(cpu);
+                unsigned long flags;
 
-        if (shares < MIN_SHARES)
-                shares = MIN_SHARES;
-        else if (shares > MAX_SHARES)
-                shares = MAX_SHARES;
+                spin_lock_irqsave(&rq->lock, flags);
+                /*
+                 * record the actual number of shares, not the boosted amount.
+                 */
+                tg->cfs_rq[cpu]->shares = boost ? 0 : shares;
+                tg->cfs_rq[cpu]->rq_weight = rq_weight;
 
-        __set_se_shares(tg->se[cpu], shares);
+                __set_se_shares(tg->se[cpu], shares);
+                spin_unlock_irqrestore(&rq->lock, flags);
+        }
 }
 
 /*
@@ -1527,14 +1538,8 @@ static int tg_shares_up(struct task_group *tg, void *data)
         if (!rq_weight)
                 rq_weight = cpus_weight(sd->span) * NICE_0_LOAD;
 
-        for_each_cpu_mask(i, sd->span) {
-                struct rq *rq = cpu_rq(i);
-                unsigned long flags;
-
-                spin_lock_irqsave(&rq->lock, flags);
-                __update_group_shares_cpu(tg, i, shares, rq_weight);
-                spin_unlock_irqrestore(&rq->lock, flags);
-        }
+        for_each_cpu_mask(i, sd->span)
+                update_group_shares_cpu(tg, i, shares, rq_weight);
 
         return 0;
 }
@@ -4443,12 +4448,8 @@ need_resched_nonpreemptible:
         if (sched_feat(HRTICK))
                 hrtick_clear(rq);
 
-        /*
-         * Do the rq-clock update outside the rq lock:
-         */
-        local_irq_disable();
+        spin_lock_irq(&rq->lock);
         update_rq_clock(rq);
-        spin_lock(&rq->lock);
         clear_tsk_need_resched(prev);
 
         if (prev->state && !(preempt_count() & PREEMPT_ACTIVE)) {
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index f604dae71316..9573c33688b8 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -73,6 +73,8 @@ unsigned int sysctl_sched_wakeup_granularity = 5000000UL;
 
 const_debug unsigned int sysctl_sched_migration_cost = 500000UL;
 
+static const struct sched_class fair_sched_class;
+
 /**************************************************************
  * CFS operations on generic schedulable entities:
  */
@@ -334,7 +336,7 @@ int sched_nr_latency_handler(struct ctl_table *table, int write,
 #endif
 
 /*
- * delta *= w / rw
+ * delta *= P[w / rw]
  */
 static inline unsigned long
 calc_delta_weight(unsigned long delta, struct sched_entity *se)
@@ -348,15 +350,13 @@ calc_delta_weight(unsigned long delta, struct sched_entity *se)
 }
 
 /*
- * delta *= rw / w
+ * delta /= w
  */
 static inline unsigned long
 calc_delta_fair(unsigned long delta, struct sched_entity *se)
 {
-        for_each_sched_entity(se) {
-                delta = calc_delta_mine(delta,
-                                cfs_rq_of(se)->load.weight, &se->load);
-        }
+        if (unlikely(se->load.weight != NICE_0_LOAD))
+                delta = calc_delta_mine(delta, NICE_0_LOAD, &se->load);
 
         return delta;
 }
@@ -386,26 +386,26 @@ static u64 __sched_period(unsigned long nr_running)
  * We calculate the wall-time slice from the period by taking a part
  * proportional to the weight.
  *
- * s = p*w/rw
+ * s = p*P[w/rw]
  */
 static u64 sched_slice(struct cfs_rq *cfs_rq, struct sched_entity *se)
 {
-        return calc_delta_weight(__sched_period(cfs_rq->nr_running), se);
+        unsigned long nr_running = cfs_rq->nr_running;
+
+        if (unlikely(!se->on_rq))
+                nr_running++;
+
+        return calc_delta_weight(__sched_period(nr_running), se);
 }
 
 /*
  * We calculate the vruntime slice of a to be inserted task
  *
- * vs = s*rw/w = p
+ * vs = s/w
  */
-static u64 sched_vslice_add(struct cfs_rq *cfs_rq, struct sched_entity *se)
+static u64 sched_vslice(struct cfs_rq *cfs_rq, struct sched_entity *se)
 {
-        unsigned long nr_running = cfs_rq->nr_running;
-
-        if (!se->on_rq)
-                nr_running++;
-
-        return __sched_period(nr_running);
+        return calc_delta_fair(sched_slice(cfs_rq, se), se);
 }
 
 /*
@@ -628,7 +628,7 @@ place_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int initial)
          * stays open at the end.
          */
         if (initial && sched_feat(START_DEBIT))
-                vruntime += sched_vslice_add(cfs_rq, se);
+                vruntime += sched_vslice(cfs_rq, se);
 
         if (!initial) {
                 /* sleeps upto a single latency don't count. */
@@ -748,7 +748,7 @@ pick_next(struct cfs_rq *cfs_rq, struct sched_entity *se)
         struct rq *rq = rq_of(cfs_rq);
         u64 pair_slice = rq->clock - cfs_rq->pair_start;
 
-        if (!cfs_rq->next || pair_slice > sched_slice(cfs_rq, cfs_rq->next)) {
+        if (!cfs_rq->next || pair_slice > sysctl_sched_min_granularity) {
                 cfs_rq->pair_start = rq->clock;
                 return se;
         }
@@ -849,11 +849,31 @@ static void hrtick_start_fair(struct rq *rq, struct task_struct *p)
                 hrtick_start(rq, delta);
         }
 }
+
+/*
+ * called from enqueue/dequeue and updates the hrtick when the
+ * current task is from our class and nr_running is low enough
+ * to matter.
+ */
+static void hrtick_update(struct rq *rq)
+{
+        struct task_struct *curr = rq->curr;
+
+        if (curr->sched_class != &fair_sched_class)
+                return;
+
+        if (cfs_rq_of(&curr->se)->nr_running < sched_nr_latency)
+                hrtick_start_fair(rq, curr);
+}
 #else /* !CONFIG_SCHED_HRTICK */
 static inline void
 hrtick_start_fair(struct rq *rq, struct task_struct *p)
 {
 }
+
+static inline void hrtick_update(struct rq *rq)
+{
+}
 #endif
 
 /*
@@ -874,7 +894,7 @@ static void enqueue_task_fair(struct rq *rq, struct task_struct *p, int wakeup)
                 wakeup = 1;
         }
 
-        hrtick_start_fair(rq, rq->curr);
+        hrtick_update(rq);
 }
 
 /*
@@ -896,7 +916,7 @@ static void dequeue_task_fair(struct rq *rq, struct task_struct *p, int sleep)
                 sleep = 1;
         }
 
-        hrtick_start_fair(rq, rq->curr);
+        hrtick_update(rq);
 }
 
 /*
@@ -1002,8 +1022,6 @@ static inline int wake_idle(int cpu, struct task_struct *p)
 
 #ifdef CONFIG_SMP
 
-static const struct sched_class fair_sched_class;
-
 #ifdef CONFIG_FAIR_GROUP_SCHED
 /*
  * effective_load() calculates the load change as seen from the root_task_group
diff --git a/kernel/sched_features.h b/kernel/sched_features.h
index 7c9e8f4a049f..fda016218296 100644
--- a/kernel/sched_features.h
+++ b/kernel/sched_features.h
@@ -5,7 +5,7 @@ SCHED_FEAT(START_DEBIT, 1)
 SCHED_FEAT(AFFINE_WAKEUPS, 1)
 SCHED_FEAT(CACHE_HOT_BUDDY, 1)
 SCHED_FEAT(SYNC_WAKEUPS, 1)
-SCHED_FEAT(HRTICK, 1)
+SCHED_FEAT(HRTICK, 0)
 SCHED_FEAT(DOUBLE_TICK, 0)
 SCHED_FEAT(ASYM_GRAN, 1)
 SCHED_FEAT(LB_BIAS, 1)
diff --git a/kernel/sched_stats.h b/kernel/sched_stats.h
index b8c156979cf2..2df9d297d292 100644
--- a/kernel/sched_stats.h
+++ b/kernel/sched_stats.h
@@ -9,7 +9,7 @@
 static int show_schedstat(struct seq_file *seq, void *v)
 {
         int cpu;
-        int mask_len = NR_CPUS/32 * 9;
+        int mask_len = DIV_ROUND_UP(NR_CPUS, 32) * 9;
         char *mask_str = kmalloc(mask_len, GFP_KERNEL);
 
         if (mask_str == NULL)
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index b3cc73931d1f..a13bd4dfaeb1 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -276,6 +276,16 @@ static struct ctl_table kern_table[] = {
         },
         {
                 .ctl_name       = CTL_UNNUMBERED,
+                .procname       = "sched_shares_thresh",
+                .data           = &sysctl_sched_shares_thresh,
+                .maxlen         = sizeof(unsigned int),
+                .mode           = 0644,
+                .proc_handler   = &proc_dointvec_minmax,
+                .strategy       = &sysctl_intvec,
+                .extra1         = &zero,
+        },
+        {
+                .ctl_name       = CTL_UNNUMBERED,
                 .procname       = "sched_child_runs_first",
                 .data           = &sysctl_sched_child_runs_first,
                 .maxlen         = sizeof(unsigned int),
diff --git a/lib/bitmap.c b/lib/bitmap.c
index 482df94ea21e..1338469ac849 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -996,3 +996,25 @@ int bitmap_allocate_region(unsigned long *bitmap, int pos, int order)
         return 0;
 }
 EXPORT_SYMBOL(bitmap_allocate_region);
+
+/**
+ * bitmap_copy_le - copy a bitmap, putting the bits into little-endian order.
+ * @dst:   destination buffer
+ * @src:   bitmap to copy
+ * @nbits: number of bits in the bitmap
+ *
+ * Require nbits % BITS_PER_LONG == 0.
+ */
+void bitmap_copy_le(void *dst, const unsigned long *src, int nbits)
+{
+        unsigned long *d = dst;
+        int i;
+
+        for (i = 0; i < nbits/BITS_PER_LONG; i++) {
+                if (BITS_PER_LONG == 64)
+                        d[i] = cpu_to_le64(src[i]);
+                else
+                        d[i] = cpu_to_le32(src[i]);
+        }
+}
+EXPORT_SYMBOL(bitmap_copy_le);
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index d4a92b63e98e..866dcc7eeb0c 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1088,7 +1088,6 @@ mem_cgroup_create(struct cgroup_subsys *ss, struct cgroup *cont)
         int node;
 
         if (unlikely((cont->parent) == NULL)) {
-                page_cgroup_init();
                 mem = &init_mem_cgroup;
         } else {
                 mem = mem_cgroup_alloc();
diff --git a/mm/page_cgroup.c b/mm/page_cgroup.c
index 5d86550701f2..f59d797dc5a9 100644
--- a/mm/page_cgroup.c
+++ b/mm/page_cgroup.c
@@ -4,7 +4,10 @@
 #include <linux/bit_spinlock.h>
 #include <linux/page_cgroup.h>
 #include <linux/hash.h>
+#include <linux/slab.h>
 #include <linux/memory.h>
+#include <linux/vmalloc.h>
+#include <linux/cgroup.h>
 
 static void __meminit
 __init_page_cgroup(struct page_cgroup *pc, unsigned long pfn)
@@ -66,6 +69,9 @@ void __init page_cgroup_init(void)
 
         int nid, fail;
 
+        if (mem_cgroup_subsys.disabled)
+                return;
+
         for_each_online_node(nid)  {
                 fail = alloc_node_page_cgroup(nid);
                 if (fail)
@@ -106,9 +112,14 @@ int __meminit init_section_page_cgroup(unsigned long pfn)
         nid = page_to_nid(pfn_to_page(pfn));
 
         table_size = sizeof(struct page_cgroup) * PAGES_PER_SECTION;
-        base = kmalloc_node(table_size, GFP_KERNEL, nid);
-        if (!base)
-                base = vmalloc_node(table_size, nid);
+        if (slab_is_available()) {
+                base = kmalloc_node(table_size, GFP_KERNEL, nid);
+                if (!base)
+                        base = vmalloc_node(table_size, nid);
+        } else {
+                base = __alloc_bootmem_node_nopanic(NODE_DATA(nid), table_size,
+                                PAGE_SIZE, __pa(MAX_DMA_ADDRESS));
+        }
 
         if (!base) {
                 printk(KERN_ERR "page cgroup allocation failure\n");
@@ -135,11 +146,16 @@ void __free_page_cgroup(unsigned long pfn)
         if (!ms || !ms->page_cgroup)
                 return;
         base = ms->page_cgroup + pfn;
-        ms->page_cgroup = NULL;
-        if (is_vmalloc_addr(base))
+        if (is_vmalloc_addr(base)) {
                 vfree(base);
-        else
-                kfree(base);
+                ms->page_cgroup = NULL;
+        } else {
+                struct page *page = virt_to_page(base);
+                if (!PageReserved(page)) { /* Is bootmem ? */
+                        kfree(base);
+                        ms->page_cgroup = NULL;
+                }
+        }
 }
 
 int online_page_cgroup(unsigned long start_pfn,
@@ -213,6 +229,9 @@ void __init page_cgroup_init(void)
         unsigned long pfn;
         int fail = 0;
 
+        if (mem_cgroup_subsys.disabled)
+                return;
+
         for (pfn = 0; !fail && pfn < max_pfn; pfn += PAGES_PER_SECTION) {
                 if (!pfn_present(pfn))
                         continue;