pci_get_subsys() will decrement the reference count of the device that
it starts searching from. Unfortunately, the pci_find_device() interface
will already have decremented the reference count of the device earlier,
so the device will end up losing all reference counts and be freed.
We can fix this by incrementing the reference count of the device to
start searching from before calling pci_get_subsys().
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Currently linux doesn't have any code to set the "MSI supported" bit in
Support Fireld of _OSC. This patch adds the code for that.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
If acpi_query_osc() returns other than AE_OK, __pci_osc_support_set()
stops scanning ACPI objects to evaluate _OSC. This prevents subsequent
_OSCs from being evaluated if some of root bridge doesn't have _OSC, for
example. So acpi_query_osc() should return always AE_OK to evaluate all
_OSC.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
In current pci_osc_control_set() implementation, once the _OSC control
field is queried, it is never queried again. But the query result can
change depending on the _OSC support field. For example, if PCI Express
Native Hot Plug control depends on ASPM support on a certain platform, a
PCI Express Native Hot Plug Control query would fail before the ASPM
driver was loaded, but it would succeed if the ASPM driver was loaded
first. Therefore, pci_osc_control_set() should query the _OSC control
field every time.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Current pci_osc_control_set() evaluates _OSC without query for control
bits, unless __pci_osc_support_set() is called beforehand. But as
strongly recommended in PCI firmware specification, it should query
control bits first.
This patch changes pci_osc_control_set() to query control bits first
even if __pci_osc_support_set() is not called beforehand.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Fix possible race condition on _OSC evaluation.
Current _OSC evaluation code has possible race condition because it
maniputes osc_data linked list or its contents without any lock
mechanism.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
We're trying to keep the !CONFIG_SHMEM tiny-shmem.c (using ramfs without
swap) in synch with CONFIG_SHMEM shmem.c (and mpm is preparing patches
to combine them). I was glad to see EXPORT_SYMBOL_GPL(shmem_file_setup)
go into shmem.c, but why not support DRM-GEM when !CONFIG_SHMEM too?
But caution says still depend on MMU, since !CONFIG_MMU is.. different.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Acked-by: Matt Mackall <mpm@selenic.com>
Acked-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
__FUNCTION__ is gcc-specific, use __func__
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
commit 9b7530cc32 ("i915: cleanup coding
horrors in i915_gem_gtt_pwrite()")
broke the i386 build for CONFIG_HIGHMEM=y.
Caught by automatic testing http://www.tglx.de/autoqa-logs/000137-0006-0001.log
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
[ My bad. It's the same patch I sent out earlier, nobody noticed then either.. ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This gets rid of an annoying warning in ehci-hcd.c when DEBUG isn't
enabled:
warning: label 'err_debug' defined but not used
by moving it inside the already-existing #ifdef DEBUG, so that it
matches the goto. And now my regular build is warning-free again.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Yes, this will probably be switched over to a cleaner model anyway, but
in the meantime I don't want to see the 'unused variable' warnings that
come from the disgusting #ifdef code. Make the special case be a nice
inlien function of its own, clean up the code, and make the warning go
away.
I wish people didn't write code that gets (valid) warnings from the
compiler, but I'll limit my fixes to code that I actually care about (in
this case just because I see the warning and it annoys me).
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Use "%zd" for size_t, and make sure to have a space between the numbers
instead of depending on the field width.
I don't like warnings in my default targeted build.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (41 commits)
PCI: fix pci_ioremap_bar() on s390
PCI: fix AER capability check
PCI: use pci_find_ext_capability everywhere
PCI: remove #ifdef DEBUG around dev_dbg call
PCI hotplug: fix get_##name return value problem
PCI: document the pcie_aspm kernel parameter
PCI: introduce an pci_ioremap(pdev, barnr) function
powerpc/PCI: Add legacy PCI access via sysfs
PCI: Add ability to mmap legacy_io on some platforms
PCI: probing debug message uniformization
PCI: support PCIe ARI capability
PCI: centralize the capabilities code in probe.c
PCI: centralize the capabilities code in pci-sysfs.c
PCI: fix 64-vbit prefetchable memory resource BARs
PCI: replace cfg space size (256/4096) by macros.
PCI: use resource_size() everywhere.
PCI: use same arg names in PCI_VDEVICE comment
PCI hotplug: rpaphp: make debug var unique
PCI: use %pF instead of print_fn_descriptor_symbol() in quirks.c
PCI: fix hotplug get_##name return value problem
...
This merges branches irq/genirq, irq/sparseirq-v4, timers/hpet-percpu
and x86/uv.
The sparseirq branch is just preliminary groundwork: no sparse IRQs are
actually implemented by this tree anymore - just the new APIs are added
while keeping the old way intact as well (the new APIs map 1:1 to
irq_desc[]). The 'real' sparse IRQ support will then be a relatively
small patch ontop of this - with a v2.6.29 merge target.
* 'genirq-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (178 commits)
genirq: improve include files
intr_remapping: fix typo
io_apic: make irq_mis_count available on 64-bit too
genirq: fix name space collisions of nr_irqs in arch/*
genirq: fix name space collision of nr_irqs in autoprobe.c
genirq: use iterators for irq_desc loops
proc: fixup irq iterator
genirq: add reverse iterator for irq_desc
x86: move ack_bad_irq() to irq.c
x86: unify show_interrupts() and proc helpers
x86: cleanup show_interrupts
genirq: cleanup the sparseirq modifications
genirq: remove artifacts from sparseirq removal
genirq: revert dynarray
genirq: remove irq_to_desc_alloc
genirq: remove sparse irq code
genirq: use inline function for irq_to_desc
genirq: consolidate nr_irqs and for_each_irq_desc()
x86: remove sparse irq from Kconfig
genirq: define nr_irqs for architectures with GENERIC_HARDIRQS=n
...
* 'v28-timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (36 commits)
fix documentation of sysrq-q really
Fix documentation of sysrq-q
timer_list: add base address to clock base
timer_list: print cpu number of clockevents device
timer_list: print real timer address
NOHZ: restart tick device from irq_enter()
NOHZ: split tick_nohz_restart_sched_tick()
NOHZ: unify the nohz function calls in irq_enter()
timers: fix itimer/many thread hang, fix
timers: fix itimer/many thread hang, v3
ntp: improve adjtimex frequency rounding
timekeeping: fix rounding problem during clock update
ntp: let update_persistent_clock() sleep
hrtimer: reorder struct hrtimer to save 8 bytes on 64bit builds
posix-timers: lock_timer: make it readable
posix-timers: lock_timer: kill the bogus ->it_id check
posix-timers: kill ->it_sigev_signo and ->it_sigev_value
posix-timers: sys_timer_create: cleanup the error handling
posix-timers: move the initialization of timer->sigq from send to create path
posix-timers: sys_timer_create: simplify and s/tasklist/rcu/
...
Fix trivial conflicts due to sysrq-q description clahes in
Documentation/sysrq.txt and drivers/char/sysrq.c
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx:
fsldma: allow Freescale Elo DMA driver to be compiled as a module
fsldma: remove internal self-test from Freescale Elo DMA driver
drivers/dma/dmatest.c: switch a GFP_ATOMIC to GFP_KERNEL
dmatest: properly handle duplicate DMA channels
drivers/dma/ioat_dma.c: drop code after return
async_tx: make async_tx_run_dependencies() easier to read
Update assorted email addresses and related info to point
to a single current, valid address.
additionally
- trivial CREDITS entry updates. (Not that this file means much any more)
- remove arjans dead redhat.com address from powernow driver
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit 7c08c9ae0c ("efifb/imacfb
consolidation + hardware support") claimed to remove imacfb entirely and
merge its DMI table into the efifb driver. So far so good, but the diff
actually ended up just generating an empty file instead of removing it.
[ Technical reason: the patch header looked like
diff -puN drivers/video/imacfb.c~efifb-imacfb-consolidation-hardware-support drivers/video/imacfb.c
--- a/drivers/video/imacfb.c~efifb-imacfb-consolidation-hardware-support
+++ a/drivers/video/imacfb.c
@@ -1,376 +0,0 @@
which git will think is a truncation, not a delete. Git wants to see a
target of /dev/null to consider it a delete. ]
So remove it properly.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The 'use pci_find_ext_capability everywhere' cleanup brought a new bug,
which makes the AER stop working. Fix it by actually using find_ext_cap
instead of just find_cap. Drop the unused config space size define while
we're at it.
Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Remove some open coded (and buggy) versions of pci_find_ext_capability
in favor of the real routine in the PCI core.
Tested-by: Tomasz Czernecki <czernecki@gmail.com>
Acked-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Reviewed-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
The commit 356a9d6f3dd283f83861adf1ac909879f0e66411 (PCI: fix hotplug
get_##name return value problem) doesn't seem to be merged properly.
Because of this, PCI hotplug no longer works (Read/Write PCI hotplug
files always returns -ENODEV).
This patch fixes wrong check of try_module_get() return value check in
get_##name().
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This adds the ability to mmap legacy IO space to the legacy_io files
in sysfs on platforms that support it. This will allow to clean up
X to use this instead of /dev/mem for legacy IO accesses such as
those performed by Int10.
While at it I moved pci_create/remove_legacy_files() to pci-sysfs.c
where I think they belong, thus making more things statis in there
and cleaned up some spurrious prototypes in the ia64 pci.h file
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This patch uniformizes PCI probing debug boot messages with dev_printk()
intead of manual printk()
It changes adress range output from [%llx, %llx] to [%#llx-%#llx], like
in pci_request_region().
For example, it goes from the mixed-style:
PCI: 0000:00:1b.0 reg 10 64bit mmio: [f4280000, f4283fff]
pci 0000:00:1b.0: PME# supported from D0 D3hot D3cold
to uniform:
pci 0000:00:1b.0: reg 10 64bit mmio: [0xf4280000-0xf4283fff]
pci 0000:00:1b.0: PME# supported from D0 D3hot D3cold
This patch has been runtime tested, boot log messages diffed, everything
looks OK.
Acked-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Vincent Legoll <vincent.legoll@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This patch adds support for PCI Express Alternative Routing-ID
Interpretation (ARI) capability.
The ARI capability extends the Function Number field of the PCI Express
Endpoint by reusing the Device Number which is otherwise hardwired to 0.
With ARI, an Endpoint can have up to 256 functions.
Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This patch centralizes the initialization and release functions of
various PCI capabilities in probe.c, which makes the introduction
of new capability support functions cleaner in the future.
Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This patch centralizes functions used to add and remove sysfs entries
for various capabilities. With this cleanup, the code is more readable
and easier for adding new capability related functions.
Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Since patch 6ac665c63d my infiniband
controller hasn't worked. This is because it has 64-bit prefetchable
memory, which was mistakenly being taken to be 32-bit memory. The
resource flags in this case are PCI_BASE_ADDRESS_MEM_TYPE_64 |
PCI_BASE_ADDRESS_MEM_PREFETCH.
This patch checks only for the PCI_BASE_ADDRESS_MEM_TYPE_64 bit; thus
whether the region is prefetchable or not is ignored. This fixes my
Infiniband.
Reviewed-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: Peter Chubb <peterc@gelato.unsw.edu.au>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This is a cleanup that changes all PCI configuration space size
representations to the macros (PCI_CFG_SPACE_SIZE and
PCI_CFG_SPACE_EXP_SIZE). And the macros are also moved from
drivers/pci/probe.c to drivers/pci/pci.h.
Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This is a cleanup that replaces the resource calculation formula with
resource_size().
Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Change debug variable name to one more unique to this driver.
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Use %pF instead of print_fn_descriptor_symbol() in quirks.c to get the name of
the hook we're calling.
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Currently, get_##name in pci_hotplug_core.c will return 0 if module
unload wins the race between unload & reading the hotplug file. Fix
that case to return -ENODEV like it should.
Reviewed-by: Alex Chiang <achiang@hp.com>
Reviewed-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Get rid of the second definition of dev which hides the earlier one in
the argument list and causes a warning from sparse.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Checkpatch would have complained about this but neither Bjorn nor myself
ran it prior to pushing. Fixup the issues Andrew pointed out.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
The introduction of struct pci_slot (f46753c5e3)
added a struct pci_slot pointer to struct pci_dev, but we forgot to
associate the two.
Connect the two structs together; the interesting portions of the object
lifetimes are:
- when a new pci_slot is created, connect it to the appropriate
pci_dev's. A single pci_slot may be associated with multiple
pci_dev's, e.g. any multi-function PCI device.
- when a pci_slot is released, look for all the pci_dev's it was
associated with, and set their pci_slot pointers to NULL
- when a pci_dev is created, look for slots to associate with.
Note -- when a pci_dev is released, we don't need to do any bookkeeping,
since pci_slot's do not have pointers to pci_dev's.
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Stephen Hemminger wrote:
> Looks like Mike created cpulistaffinty in sysfs but never completed
> the job.
This patch hooks things up correctly, taking care to remove the new file
when the bus is destroyed.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
In msi_capability_init, we can make use of the calculated results
instead of calling is_mask_bit_support and is_64bit_address twice.
Signed-off-by: Jike Song <albcamus@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
I think an appropriate name tag of "hpdriver_portdrv" variable
is "pciehp" rather than "hpdriver".
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Current pciehp driver gets irq number from pci_dev->irq. But because
pciehp driver is a pci express port service driver, it should get irq
number from pcie_device->irq.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This patch changes these two messages:
pci 0000:00:03.0: supports D1
pci 0000:00:03.0: supports D2
to this:
pci 0000:00:03.0: supports D1 D2
It also trivially converts a "dev_printk(KERN_INFO, ...)" to
"dev_info(...)".
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Please run checkpatch prior to sending patches, this one fixes several style
issues with the list_for_each conversion patch.
Cc: Cordelia Sam <cordesam@gmail.com>
Cc: Cordelia Sam <cordsam@linux.vnet.ibm.com>
Cc: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Make code more readable with list_for_each_entry().
Signed-off-by: Cordelia Sam <cordesam@gmail.com>
Cc: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Use "[%04x:%04x]" for PCI vendor/device IDs to follow the format
used by lspci(8).
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
We are using 28bit pci (bus/dev/fn + 12 bits) as irq number, so the
cache for irq number should be 32 bit too.
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Matthew Wilcox
Taku Izumi
Hugh Dickins
Harvey Harrison
Thomas Gleixner
Linus Torvalds
Dave Jones
Yu Zhao
Jesse Barnes
Kenji Kaneshige
Benjamin Herrenschmidt
Vincent Legoll
Peter Chubb
Kristen Carlson Accardi
Yinghai Lu
Stephen Hemminger
Alex Chiang
Mike Travis
Jike Song
Bjorn Helgaas
akpm@linux-foundation.org