| Commit message (Collapse) | Author | Age |
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This is part of a patch from Marc Singer to allow r2 to be
passed to the kernel. Marc's original comments follow:
This revised R2 (atags pointer) patch incorporates comments from Nico
Pitre and Ben Dooks. It modifies the head.S files such that the R2
value set by the bootloader is conveyed to the kernel startup code.
The kernel head.S heuristically validates the pointer. It will set R2
to zero if it believes the pointer is invalid. Presently, it requires
that the ATAGS list reside in the first 16KiB of physical RAM.
Relaxing this contraint may be both desirable as well as tricky.
Signed-off-by: Marc Singer <elf@buici.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Patch from Catalin Marinas
If the low interrupt latency mode is enabled for the CPU (from ARMv6
onwards), the ldm/stm instructions are no longer atomic. An ldm instruction
restoring the sp and pc registers can be interrupted immediately after sp
was updated but before the pc. If this happens, the CPU restores the base
register to the value before the ldm instruction but if the base register
is not sp, the interrupt routine will corrupt the stack and the restarted
ldm instruction will load garbage.
Note that future ARM cores might always run in the low interrupt latency
mode.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Patch from Richard Purdie
This patch adds a check to see if the pxa i2c interface is enabled
before allowing it to be used and resets it if found to be disabled.
This automatically restores the interface if the device has been
suspended and resumed without causing any suspend/resume call ordering
issues.
The patch also fixes a build warning and adds an appropriate module
licence (the module is gpl according to the header).
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Patch from Catalin Marinas
Since ARM1176, the CPU ID format has changed and it will also be used for
future ARM architectures.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Patch from Kevin Hilman
This patch increase available DMA-consistent memory allocated by dma_coherent_alloc(). The default remains at 2M (defined in asm/memory.h) and each platform has the ability to override in asm/arch-foo/memory.h.
Signed-off-by: Kevin Hilman <kevin@hilman.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Patch from Nicolas Pitre
Depending on your gcc version, the current C-only implementation would
produce suboptimal code, ranging from a bad register selection forcing
an additional mov instruction to a failure to merge the eor and the ror
in a single instruction. With a little help gcc always produces the
best code.
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Patch from Richard Purdie
Change mainstone and sharpsl pxa2xx pcmcia drivers to use
platform_device_alloc which fixes a memory leak.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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#3244)
Patch from Andrew Victor
This patch adds support to the 2.6 kernel series for the Atmel
AT91RM9200 processor.
This patch is the support for the Cogent CSB337 and CSB637 boards.
Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Patch from Andrew Victor
This patch adds support to the 2.6 kernel series for the Atmel
AT91RM9200 processor.
This patch is the support for Atmel's DK and EK boards.
Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Patch from Andrew Victor
This patch adds support to the 2.6 kernel series for the Atmel
AT91RM9200 processor.
This patch is the Serial driver.
This version uses the newly re-written GPL'ed hardware headers.
Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Replace obsolete pci_module_init() with pci_register_driver().
Signed-off-by: Richard Knutsson <ricknu-0@student.ltu.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Replace obsolete pci_module_init() with pci_register_driver().
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Richard Knutsson <ricknu-0@student.ltu.se>
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Replace obsolete pci_module_init() with pci_register_driver().
Signed-off-by: Richard Knutsson <ricknu-0@student.ltu.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Replace obsolete pci_module_init() with pci_register_driver().
Signed-off-by: Richard Knutsson <ricknu-0@student.ltu.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Various PCI bus errors can be signaled by newer PCI controllers.
Recovering from those errors requires an infrastructure to notify
affected device drivers of the error, and a way of walking through
a reset sequence. This patch adds documentation describing the
current error recovery proposal.
Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Various PCI bus errors can be signaled by newer PCI controllers.
Recovering from those errors requires an infrastructure to notify
affected device drivers of the error, and a way of walking through a
reset sequence. This patch adds a set of callbacks to be used by error
recovery routines to notify device drivers of the various stages of
recovery.
Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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I upgraded my Toshiba Satellite BIOS recently to see if it would fix an
ACPI related problem I have
(http://bugzilla.kernel.org/show_bug.cgi?id=5727). Unfortunately, it
didn't, and moreover, Toshiba chose to change the system version in the
DMI table with the update, causing the OHCI1394 related quirk to break.
This patch updates the DMI table for the quirk to include Toshiba's new
version name for this machine; I've tested it and it seems to work fine.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch contains the following cleanups:
- hotplug/pciehp_core.c: make the needlessly global hpdriver_context
static
- #if 0 the following unused functions:
- pci.c: pci_bus_max_busnr()
- pci.c: pci_max_busnr()
- proc.c: pci_proc_attach_bus()
- remove.c: pci_remove_device_safe
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Only size the bus that has been added.
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The Compaq PCI Hotplug driver was creating 2 sysfs files that contained
nothing but debug information, and had way more than "one value" in
them. This patch converts the code to use debugfs for these files
instead.
Compile tested only.
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Here's a small patch to reduce the nr. of pointer dereferences in
drivers/pci/hotplug/pciehp_core.c
Benefits:
- micro speed optimization due to fewer pointer derefs
- generated code is slightly smaller
- small line length cleanup
- better readability
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Here's a small patch to reduce the nr. of pointer dereferences in
drivers/pci/hotplug/pciehprm_acpi.c
Benefits:
- micro speed optimization due to fewer pointer derefs
- generated code is slightly smaller
- better readability
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Here's a small patch to reduce the nr. of pointer dereferences in
drivers/pci/hotplug/rpaphp_pci.c
Benefits:
- micro speed optimization due to fewer pointer derefs
- generated code should be slightly smaller
- better readability
note: due to lack of both hardware and cross-compile tools this patch is,
unfortunately, completely untested.
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Here's a small patch to reduce the nr of pointer dereferences in
drivers/pci/hotplug/cpqphp_core.c
Benefits of this patch:
- micro speed optimization due to fewer pointer derefs
- generated code is slightly smaller
- tiny line length and whitespace cleanup
- better readability
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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idr gently pointed out today that not only is the sysfs rom file
interface somewhat unintuitive (despite my efforts and initial
implementation), but it's also undocumented! This patch to
Documentation/filesystems/sysfs-pci.txt corrects the latter problem; the
former is a userland ABI now though, so we're stuck with it for awhile
at least.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The powerpc PCI code sets up the PCI tree without doing config space
accesses in most cases, from the firmware tree. However, it still wants
to call pci_cfg_space_size() under some conditions, thus it needs to
be made non-static (though I don't see a point to export it to modules).
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Add a warning if a child bus may be inaccessible because the
parent bridge has wrong secondary or subordinate bus numbers.
Note that this may or may not happen on "transparent" bridges,
as can be seen in bug #5557.
Also, if we do not fix up the assignment of bus numbers, try to
make use of the bus number space available.
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch fixes bugs in the pciehp driver that prevent hot-add
of a card with PCI bridges on it.
Signed-off-by: Rajesh Shah <rajesh.shah@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch disables power fault, MRL sensor and presence detection
interrupts when a PCIe slot is powered-off and enables those
interrupts when it is powered-on again. This is necessary to prevent
the associated events from causing an endless cycle of interrupts
due to the power-fault bit, which stays set till power is restored
to the slot.
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>
Signed-off-by: Rajesh Shah <rajesh.shah@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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I've implemented a quirk to take advantage of the 1KB I/O space
granularity option on the Intel P64H2 PCI Bridge. I had to change
probe.c because it sets the resource start and end to be aligned on 4k
boundaries (after the quirk sets them to 1k boundaries). I've tested
this patch on a Unisys ES7000-600 both with and without the 1KB option
enabled. I also tested this on a 2 processor Dell box that doesn't have
a P64H2 to make sure there were no negative affects there.
Signed-off-by: Dan Yeisley <dan.yeisley@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The following patch implements .get_address callback of
hotplug_slot_ops for SHPCHP driver. With this patch, we
can see bus address of hotplug slots as follows:
$ cat address
0000:0b:01
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The RPAPHP code contains two routines that appear to be gratuitous copies
of very similar pci code. In particular,
rpaphp_claim_resource ~~ pci_claim_resource
(there is a minor, non-functional difference)
rpadlpar_claim_one_bus == pcibios_claim_one_bus
(the code is identical)
This patch removes the rpaphp versions of the code.
Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Acked-by: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The RPAPHP code contains a routine that duplicates some existing code.
This patch removes the rpaphp version of the code.
Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Acked-by: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Updated printk and DBG with appropriate KERN_*.
Signed-off-by: Daniel Marjamäki <daniel.marjamaki@comhem.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Current SHPCHP driver uses msleep_interruptible() function to wait for
a command completion event. But I think this would cause an unnecessary
long wait until timeout, if command completion interrupt came before
task state was changed to TASK_INTERRUPTIBLE. This patch fixes this
issue. With this patch, command completion becomes faster as follows:
o Without this patch
# time echo 1 > power
real 0m4.708s
user 0m0.000s
sys 0m0.524s
o With this patch
# time echo 1 > power
real 0m2.221s
user 0m0.000s
sys 0m0.532s
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Current SHPCHP driver writes a '0' to the Command Completion Detect
bit to clear the Command Complete Interrupt Pending. But according to
the SHPC spec (See 4.7.3.1 System Interrupts), SHPCHP driver must
write '1'. This patch fixes this bug.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Current SHPCHP driver seems not to map MMIO region properly. This
patch fixes this bug. This patch also cleanup the code.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The hpc_get_mode1_ECC_cap() function of SHPCHP driver seems to refer
the wrong bit for refering the "Mode 1 ECC Capability" bit. This bug
seems not to cause any problem so far. But I think this should be
fixed. This patch fixes this bug.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The hpc_get_max_bus_speed() function of the SHPCHP driver seems to
refer wrong bits in the "Slot Avail Register I" and "Slot Avail
Register II". This patch fixes this bug. And this also cleanup the
code.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch replaces pci_find_slot() with pci_get_slot() in the SHPCHP
driver. This enables SHPCHP driver to work on multiple PCI segment
systems.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The Coverity checker spotted that we already did return -ENOMEM
if (!p_mem_node).
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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I noticed what appears to be a cut/paste error in
drivers/pci/hotplug/ibmphp_pci.c:
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The bus_id string must be unique for all devices of that bus in the
system, not just for devices with the same parent - otherwise multiple
symlinks with identical names appear in /sys/bus/pci_express/devices.
Signed-off-by: Sergey Vlasov <vsu@altlinux.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Hanna Linder <hannal@us.ibm.com>
Signed-off-by: Maximilian Attems <janitor@sternwelten.at>
Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Jiri Slaby <xslaby@fi.muni.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Jiri Slaby <xslaby@fi.muni.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Jiri Slaby <xslaby@fi.muni.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Jiri Slaby <xslaby@fi.muni.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Jiri Slaby <xslaby@fi.muni.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
arch/ppc/kernel/pci.c | 21 +++++++++++----------
1 file changed, 11 insertions(+), 10 deletions(-)
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