| Commit message (Collapse) | Author | Age |
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This patch implements a weak function to return the default I/O or memory
window alignment for a P2P bridge. By default, I/O windows are aligned to
4KiB or 1KiB and memory windows are aligned to 4MiB. Some platforms, e.g.,
powernv, have special alignment requirements and can override
pcibios_window_alignment().
[bhelgaas: changelog]
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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* pci/shengzhou-irq:
PCI: Use dev->irq instead of dev->pin to enable non MSI/INTx interrupt
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On some platforms, root port has neither MSI/MSI-X nor INTx interrupt
generated in RC mode. In this case, we have to use other interrupt, e.g.,
system shared interrupt, for port service IRQ to have AER, Hot-plug, etc.,
services work.
Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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* pci/oliver-pciehp-resume:
PCI: pciehp: Always implement resume, regardless of pciehp_force param
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Previously, the driver ignored resume unless the pciehp_force module_param
was specified. On some laptops that means that interrupts are not
delivered after S3, so card removals and insertions are not handled.
This patch makes the driver handle resume regardless of pciehp_force.
[bhelgaas: changelog]
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rafael J. Wysocki <rjw@sisk.pl>
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* pci/feng-avoid-kmalloc:
PCI: Remove the obsolete no_pci_devices() check
PCI: Use pci_device_id on stack for pci_get_subsys/class() to avoid kmalloc
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In function pci_get_subsys() there is a check:
/*
* pci_find_subsys() can be called on the ide_setup() path,
* super-early in boot. But the down_read() will enable local
* interrupts, which can cause some machines to crash. So here we
* detect and flag that situation and bail out early.
*/
if (unlikely(no_pci_devices()))
return NULL;
But there is no ide_setup() now, and no down_read() either, which
makes the check obsolete. So remove it.
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This fixes a kernel warning https://lkml.org/lkml/2012/7/31/682
pci_get_subsys() may get called in late system reboot stage, using
a sleepable kmalloc() sounds fragile and will cause a kernel warning
with my recent commmit 55c844a "x86/reboot: Fix a warning message
triggered by stop_other_cpus()" which disable local interrupt in
late system shutdown/reboot phase. Using a local parameter instead
will fix it and make it eligible for calling from atomic context.
Do the same change for the pci_get_class() as suggested by Bjorn Helgaas.
Initializing the on-stack struct pci_device_id suggested by Fengguang Wu
and Jiri Slaby. Section 6.7.8 of the C99 standard guarantees that when we
initialize some of the struct members, the rest of the struct is implicitly
initialized the same as objects with static storage duration, i.e., to zero
in this case.
[bhelgaas: changelog, incorporate Fengguang/Jiri initialization fix]
Bisected-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Fengguang Wu <fengguang.wu@intel.com>
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* pci/bjorn-remove-fakephp:
PCI: Remove the fakephp driver
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The fakephp driver was scheduled for removal in 2011.
Fakephp presented /sys/bus/pci/slots/.../power files for every PCI
function. Writing "0" to one of these files logically removed the device
from the system. The PCI core now provides the same functionality with
/sys/bus/pci/devices/.../remove.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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* pci/bjorn-cleanup-remove:
PCI: Remove unused pci_dev_b()
sgi-agp: Use list_for_each_entry() for bus->devices traversal
parisc/PCI: Use list_for_each_entry() for bus->devices traversal
parisc/PCI: Enable PERR/SERR on all devices
frv/PCI: Use list_for_each_entry() for bus->devices traversal
PCI: Leave normal LIST_POISON in deleted list entries
PCI: Rename local variables to conventional names
PCI: Remove unused, commented-out, code
PCI: Stop and remove devices in one pass
PCI: Fold stop and remove helpers into their callers
PCI: Use list_for_each_entry() for bus->devices traversal
PCI: Remove pci_stop_and_remove_behind_bridge()
PCI: Don't export stop_bus_device and remove_bus_device interfaces
pcmcia: Use common pci_stop_and_remove_bus_device()
PCI: acpiphp: Use common pci_stop_and_remove_bus_device()
PCI: acpiphp: Stop disabling bridges on remove
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All uses of pci_dev_b() have been replaced by list_for_each_entry(), so
remove it.
Tested-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
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Replace list_for_each() + pci_dev_b() with the simpler
list_for_each_entry().
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
CC: David Airlie <airlied@linux.ie>
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Replace list_for_each() + pci_dev_b() with the simpler
list_for_each_entry().
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
CC: linux-parisc@vger.kernel.org
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Previously, we enabled PERR & SERR for the first device on the bus, but
left other devices alone.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
CC: linux-parisc@vger.kernel.org
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Replace open-coded list traversal with list_for_each_entry().
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
CC: David Howells <dhowells@redhat.com>
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list_del() already sets next/prev to LIST_POISON1/LIST_POISON2, so we
don't need to do anything special here to prevent further list accesses.
Tested-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
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"bus" is the conventional name for a "struct pci_bus *" variable.
Tested-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
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This removes unused code that was already commented out.
Tested-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
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Previously, when we removed a PCI device, we made two passes over the
hierarchy rooted at the device. In the first pass, we stopped all
the devices, and in the second, we removed them.
This patch combines the two passes into one so that we remove a device as
soon as it and all its children have been stopped.
Note that we previously stopped devices in reverse order and removed them
in forward order. Now we stop and remove them in reverse order.
Tested-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
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pci_stop_bus_devices() is only two lines of code and is only called by
pci_stop_bus_device(), so I think it's easier to read if we just fold it
into the caller. Similarly for __pci_remove_behind_bridge().
Tested-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
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Replace list_for_each() + pci_dev_b() with the simpler
list_for_each_entry().
Tested-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
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The PCMCIA CardBus driver was the only user of
pci_stop_and_remove_behind_bridge(), and it now uses
pci_stop_and_remove_bus_device() instead, so remove this interface.
This removes exported symbol pci_stop_and_remove_behind_bridge.
Tested-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
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The acpiphp hotplug driver was the only user of pci_stop_bus_device() and
__pci_remove_bus_device(), and it now uses pci_stop_and_remove_bus_device()
instead, so stop exposing these interfaces.
This removes these exported symbols:
__pci_remove_bus_device
pci_stop_bus_device
Tested-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
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Use pci_stop_and_remove_bus_device() like most other hotplug drivers
rather than the special-purpose "behind_bridge" variant. This just
means we have to iterate through all the devices downstream of the
bridge ourselves, which is the same thing pci_stop_behind_bridge()
did.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
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Use pci_stop_and_remove_bus_device() like most other hotplug drivers
rather than stopping and removing separately.
Tested-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
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acpiphp_disable_slot() turns off power to the slot immediately after
calling disable_device(), so there's no point in disabling any bridges
below the slot: we're about to turn them off anyway.
Tested-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
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* pci/bjorn-find-next-ext-cap:
PCI: Add Vendor-Specific Extended Capability header info
PCI: Add pci_find_next_ext_capability()
Conflicts:
drivers/pci/pci.c
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This adds the fields in the Vendor-Specific Header: ID, Rev, and Length.
There may be multiple Vendor-Specific capabilities, so drivers should use
the VSEC ID to identify the one of interest.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Some extended capabilities, e.g., the vendor-specific capability, can
occur several times. The existing pci_find_ext_capability() only finds
the first occurrence. This adds pci_find_next_ext_capability(), which
can iterate through all of them.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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* pci/jiang-pcie-cap: (40 commits)
rtl8192e: Use PCI Express Capability accessors
et131x: Use PCI Express Capability accessors
rapdio/tsi721: Use PCI Express Capability accessors
drm/radeon: Use PCI Express Capability accessors
[SCSI] qla4xxx: Use PCI Express Capability accessors
[SCSI] qla4xxx: Use PCI Express Capability accessors
IB/qib: Use PCI Express Capability accessors
IB/mthca: Use PCI Express Capability accessors
rtlwifi: Use PCI Express Capability accessors
iwlwifi: Use PCI Express Capability accessors
iwlegacy: Use PCI Express Capability accessors
ath9k: Use PCI Express Capability accessors
atl1c: Use PCI Express Capability accessors
cxgb4: Use PCI Express Capability accessors
cxgb3: Use PCI Express Capability accessors
myri10ge: Use PCI Express Capability accessors
niu: Use PCI Express Capability accessors
mlx4: Use PCI Express Capability accessors
vxge: Use PCI Express Capability accessors
igb: Use PCI Express Capability accessors
...
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Use PCI Express Capability access functions to simplify rtl8192e driver.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Use PCI Express Capability access functions to simplify et131x driver.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Use PCI Express Capability access functions to simplify tsi721 driver.
[bhelgaas: use word (16-bit) accesses for PCI_EXP_DEVCTL, PCI_EXP_DEVCTL2]
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Alexandre Bounine <alexandre.bounine@idt.com>
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Use PCI Express Capability access functions to simplify radeon driver.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
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Use PCI Express Capability access functions to simplify qla4xxx driver.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Use PCI Express Capability access functions to simplify qla2xxx driver.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Use PCI Express Capability access functions to simplify qib driver.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
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Use PCI Express Capability access functions to simplify mthca driver.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Roland Dreier <roland@purestorage.com>
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Use PCI Express Capability access functions to simplify rtlwifi driver.
[bhelgaas: split iwlegacy, iwlwifi, rtlwifi into separate patches]
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Use PCI Express Capability access functions to simplify iwlwifi driver.
[bhelgaas: split iwlegacy, iwlwifi, rtlwifi into separate patches]
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Use PCI Express Capability access functions to simplify iwlegacy driver.
[bhelgaas: split iwlegacy, iwlwifi, rtlwifi into separate patches]
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Use PCI Express Capability access functions to simplify ath9k driver.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Use PCI Express Capability access functions to simplify atl1c driver.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Use PCI Express Capability access functions to simplify cxgb4 driver.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Use PCI Express Capability access functions to simplify cxgb3 driver.
[bhelgaas: split cxgb3 and cxgb4 into separate patches]
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Use PCI Express Capability access functions to simplify myri10ge driver.
[bhelgaas: fix myri10ge_toggle_relaxed() return value]
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Use PCI Express Capability access functions to simplify niu driver.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Use PCI Express Capability access functions to simplify mlx4 driver.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Use PCI Express Capability access functions to simplify vxge driver.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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