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Commit Graph

1118 Commits

Author SHA1 Message Date
Shaohua Li
1253f7aabf dock: introduce .uevent for devices in dock, eg libata
dock's uevent reported itself, not ata. It might be difficult to find an
ata device just according to a dock. This patch introduces docking ops
for each device in a dock. when docking, dock driver can send device
specific uevent. This should help dock station too (not just bay)

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Acked-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-09-23 23:23:00 -04:00
Linus Torvalds
0cb60efd03 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  PCI: re-add debug prints for unmodified BARs
  PCI: fix pciehp_free_irq()
  PCI Hotplug: fakephp: fix deadlock... again
  PCI: Fix printk warnings in setup-bus.c
  PCI: Fix printk warnings in probe.c
  PCI/iommu: blacklist DMAR on Intel G31/G33 chipsets
2008-09-13 14:47:33 -07:00
Yinghai Lu
395a125c62 PCI: re-add debug prints for unmodified BARs
Print out for device BAR values before the kernel tries to update them.
Also make related output use KERN_DEBUG.

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-09-12 16:34:46 -07:00
Adrian Bunk
a5827f40af PCI: fix pciehp_free_irq()
This patch fixes an obvious bug (loop was never entered) caused by
commit 820943b6fc
(pciehp: cleanup pcie_poll_cmd).

Reported-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Acked-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-09-10 10:50:57 -07:00
Alex Chiang
48902025af PCI Hotplug: fakephp: fix deadlock... again
Commit fe99740cac (construct one
fakephp slot per PCI slot) introduced a regression, causing a
deadlock when removing a PCI device.

We also never actually removed the device from the PCI core.

So we:

	- remove the device from the PCI core
	- do not directly call remove_slot() to prevent deadlock

Yu Zhao reported and diagnosed this defect.

Signed-off-by: Alex Chiang <achiang@hp.com>
Acked-by: Yu Zhao <yu.zhao@intel.com>
Cc: Matthew Wilcox <matthew@wil.cx>
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>
2008-09-09 11:44:06 -07:00
Johann Felix Soden
53bc88701b PCI: Fix printk warnings in setup-bus.c
Again, the cleaned up code introduced some resource warnings:
drivers/pci/setup-bus.c: In function 'pci_bus_dump_res':
drivers/pci/setup-bus.c:542: warning: format '%llx' expects type 'long long unsigned int', but argument 5 has type 'resource_size_t'
drivers/pci/setup-bus.c:542: warning: format '%llx' expects type 'long long unsigned int', but argument 6 has type 'resource_size_t'

Fix those up too.

Signed-off-by: Johann Felix Soden <johfel@users.sourceforge.net>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-09-09 11:43:38 -07:00
Johann Felix Soden
4ca8a7726f PCI: Fix printk warnings in probe.c
The cleaned up resource code in probe.c introduced some warnings:
drivers/pci/probe.c: In function 'pci_read_bridge_bases':
drivers/pci/probe.c:386: warning: format '%llx' expects type 'long long unsigned int', but argument 3 has type 'resource_size_t'
drivers/pci/probe.c:386: warning: format '%llx' expects type 'long long unsigned int', but argument 4 has type 'resource_size_t'
drivers/pci/probe.c:398: warning: format '%llx' expects type 'long long unsigned int', but argument 3 has type 'resource_size_t'
drivers/pci/probe.c:398: warning: format '%llx' expects type 'long long unsigned int', but argument 4 has type 'resource_size_t'
drivers/pci/probe.c:434: warning: format '%llx' expects type 'long long unsigned int', but argument 4 has type 'resource_size_t'
drivers/pci/probe.c:434: warning: format '%llx' expects type 'long long unsigned int', but argument 5 has type 'resource_size_t'

So fix them up.

Signed-off-by: Johann Felix Soden <johfel@users.sourceforge.net>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-09-09 11:43:32 -07:00
David Woodhouse
cbda1ba898 PCI/iommu: blacklist DMAR on Intel G31/G33 chipsets
Some BIOSes (the Intel DG33BU, for example) wrongly claim to have DMAR
when they don't. Avoid the resulting crashes when it doesn't work as
expected.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-09-09 11:42:43 -07:00
Linus Torvalds
5f17cfce57 PCI: fix pbus_size_mem() resource alignment for CardBus controllers
Commit 884525655d ("PCI: clean up resource
alignment management") changed the resource handling to mark how a
resource was aligned on a per-resource basis.

Thus, instead of looking at the resource number to determine whether it
was a bridge resource or a regular resource (they have different
alignment rules), we should just ask the resource for its alignment
directly.

The reason this broke only cardbus resources was that for the other
types of resources, the old way of deciding alignment actually still
happened to work.  But CardBus bridge resources had been changed by
commit 934b7024f0 ("Fix cardbus resource
allocation") to look more like regular resources than PCI bridge
resources from an alignment handling standpoint.

Reported-and-tested-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-09-04 01:33:59 -07:00
Greg KH
ebca4f1bce PCI: fix reference leak in pci_get_dev_by_id()
Alex Chiang and Matthew Wilcox pointed out that pci_get_dev_by_id() does
not properly decrement the reference on the from pointer if it is
present, like the documentation for the function states it will.

It fixes a pretty bad leak in the hotplug core (we were leaking an
entire struct pci_dev for each function of each offlined card, the first
time around; subsequent onlines/offlines were ok).

Cc: Matthew Wilcox <matthew@wil.cx>
Cc: stable <stable@kernel.org>
Tested-by: Alex Chiang <achiang@hp.com>
Acked-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-08-21 15:22:46 -07:00
Alex Chiang
d6a9e9b40b PCI: shpchp: Rename duplicate slot name N as N-1, N-2, N-M...
Commit ef0ff95f13 (shpchp: fix slot name)
introduces the shpchp_slot_with_bus module parameter, which was intended
to help work around broken firmware that assigns the same name to multiple
slots.

Commit b3bd307c62 (shpchp: add message about
shpchp_slot_with_bus option) tells the user to use the above parameter
in the event of a name collision.

This approach is sub-optimal because it requires too much work from
the user.

Instead, let's rename the slot on behalf of the user. If firmware
assigns the name N to multiple slots, then:

	The first registered slot is assigned N
	The second registered slot is assigned N-1
	The third registered slot is assigned N-2
	The Mth registered slot becomes N-M

In the event we overflow the slot->name parameter, we report an
error to the user.

This is a temporary fix until the entire PCI core can be reworked
such that individual drivers no longer have to manage their own
slot names.

Tested-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Acked-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-08-21 15:15:31 -07:00
Alex Chiang
167e782e30 PCI: pciehp: Rename duplicate slot name N as N-1, N-2, N-M...
Commit 3800345f72 (pciehp: fix slot name)
introduces the pciehp_slot_with_bus module parameter, which was intended
to help work around broken firmware that assigns the same name to multiple
slots.

Commit 9e4f2e8d4d (pciehp: add message about
pciehp_slot_with_bus option) tells the user to use the above parameter
in the event of a name collision.

This approach is sub-optimal because it requires too much work from
the user.

Instead, let's rename the slot on behalf of the user. If firmware
assigns the name N to multiple slots, then:

	The first registered slot is assigned N
	The second registered slot is assigned N-1
	The third registered slot is assigned N-2
	The Mth registered slot becomes N-M

In the event we overflow the slot->name parameter, we report an
error to the user.

This is a temporary fix until the entire PCI core can be reworked
such that individual drivers no longer have to manage their own
slot names.

Tested-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Acked-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-08-21 15:15:10 -07:00
Jesse Barnes
a59f2bbaed Merge branch 'x86-merge' into for-linus 2008-08-18 17:23:24 -07:00
Jiri Slaby
056c58e8eb PCI: add acpi_find_root_bridge_handle
Consolidate finding of a root bridge and getting its handle to the one
inline function. It's cut & pasted on multiple places. Use this new
inline in those.

Cc: kristen.c.accardi@intel.com
Acked-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-08-18 13:48:04 -07:00
Jiri Slaby
e0d94beead PCI: acpi_pcihp: run _OSC on a root bridge
_OSC should be ran on a root bridge instead of the device itself.  Do
this before touching OSHP since PCI fw specs states that _OSC should be
preferred over OSHP (however if the device has OSHP but not _OSC -- not
a root bridge -- it's not).

Cc: kristen.c.accardi@intel.com
Acked-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-08-18 13:47:20 -07:00
Jesse Barnes
ce6754235b Merge branch 'pci-for-jesse' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip into x86-merge
Conflicts:

	drivers/pci/probe.c
2008-08-18 09:54:13 -07:00
Dean Hildebrand
35405f256d PCI: Limit VPD length for Broadcom 5708S
BCM5706S wont work correctly unless VPD length truncated to 128

Signed-off-by: Dean Hildebrand <dhildeb@us.ibm.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-08-07 17:47:37 -07:00
Rafael J. Wysocki
5a6c9b60b4 PCI PM: Export pci_pme_active to drivers
Export pci_pme_active() to drivers, so that they can clear the
PME_status bit and disable PME# for their devices without involving
ACPI.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-08-07 15:33:36 -07:00
Simon Horman
a844158a64 PCI: check the return value of device_create_bin_file() in pci_create_bus()
Check the return value of device_create_bin_file in pci_create_bus and
unwind if necessary. Don't propagate error to caller, as failure to create
these files shouldn't prevent PCI from being initialised. Instead, just
log a warning.

Cc: Sven Wegener <sven.wegener@stealer.net>
Cc: Michael Ellerman <michael@ellerman.id.au>
Cc: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-08-07 09:49:07 -07:00
Jesse Barnes
abad2ec98f PCI: fully restore MSI state at resume time
With the recent change to avoid masking MSIs using the MSI enable bit, devices
without an MSI mask bit will have their MSI capability always enabled when MSI
is in use, so we need to restore it regardless of the mask bit state.

Fixes kernel bz 11178.

Acked-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-08-07 08:52:37 -07:00
Eric Dumazet
9d82d8eaec PCI: add Broadcom 5708S to VPD length quirk
BCM5708S wont work correctly unless VPD length truncated to 128

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-08-07 06:52:01 -07:00
Alan Cox
979b1791e5 PCI: add D3 power state avoidance quirk
Libata has some hacks to deal with certain controllers going silly in D3
state. The right way to handle this is to keep a PCI device flag for
such devices. That can then be generalised for no ATA devices with power
problems.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-07-28 15:12:11 -07:00
Shaohua Li
d6d3857434 PCI: add an option to allow ASPM enabled forcibly
A new option, pcie_aspm=force, will force ASPM to be enabled, even on system
with PCIe 1.0 devices.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-07-28 14:57:30 -07:00
Shaohua Li
149e16372a PCI: disable ASPM on pre-1.1 PCIe devices
Disable ASPM on pre-1.1 PCIe devices, as many of them don't implement it
correctly.

Tested-by: Jack Howarth <howarth@bromo.msbb.uc.edu>
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-07-28 14:56:57 -07:00
Shaohua Li
5fde244d39 PCI: disable ASPM per ACPI FADT setting
The ACPI FADT table includes an ASPM control bit. If the bit is set, do
not enable ASPM since it may indicate that the platform doesn't actually
support the feature.

Tested-by: Jack Howarth <howarth@bromo.msbb.uc.edu>
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-07-28 14:56:09 -07:00
Matthew Wilcox
ce6fce4295 PCI MSI: Don't disable MSIs if the mask bit isn't supported
David Vrabel has a device which generates an interrupt storm on the INTx
pin if we disable MSI interrupts altogether.  Masking interrupts is only
a performance optimisation, so we can ignore the request to mask the
interrupt.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-07-28 14:43:22 -07:00
Matthew Wilcox
cc5499c3a6 PCI: handle 64-bit resources better on 32-bit machines
If the kernel is configured to support 64-bit resources on a 32-bit
machine, we can support 64-bit BARs properly.  Just change the condition
to check sizeof(resource_size_t) instead of BITS_PER_LONG.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-07-28 14:29:04 -07:00
Matthew Wilcox
6ac665c63d PCI: rewrite PCI BAR reading code
Factor out the code to read one BAR from the loop in pci_read_bases into
a new function, __pci_read_base.  The new code is slightly more
readable, better commented and removes the ifdef.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-07-28 14:28:53 -07:00
Jesse Barnes
3713907423 PCI: document pci_target_state
The empty kdoc was causing warnings, so provide some actual documentation.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-07-28 11:49:26 -07:00
Jesse Barnes
56adc59d81 PCI hotplug: fix typo in pcie hotplug output
Comamnd->Command

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-07-28 11:44:32 -07:00
Linus Torvalds
5042d99795 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  PCI: fixup sparse endianness warnings in proc.c
  PCI PM: make more PCI PM core functionality available to drivers
  PCI/DMAR: don't assume presence of RMRRs
  PCI hotplug: fix error path in pci_slot's register_slot
2008-07-24 13:57:13 -07:00
Harvey Harrison
f17a077e61 PCI: fixup sparse endianness warnings in proc.c
drivers/pci/proc.c:91:3: warning: cast from restricted __le16
drivers/pci/proc.c💯3: warning: cast from restricted __le32
drivers/pci/proc.c:109:3: warning: cast from restricted __le16
drivers/pci/proc.c:161:40: warning: cast to restricted __le16
drivers/pci/proc.c:170:41: warning: cast to restricted __le32
drivers/pci/proc.c:179:40: warning: cast to restricted __le16

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-07-22 15:19:44 -07:00
Rafael J. Wysocki
e5899e1b7d PCI PM: make more PCI PM core functionality available to drivers
Make more PCI PM core functionality available to drivers

* Export pci_pme_capable() so that it can be called directly by
  drivers (for example, tg3 needs that).

* Move the state choosing part of pci_prepare_to_sleep() to a
  separate function, pci_target_state(), that can be called directly
  by drivers (for example, tg3 needs that).

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-07-22 14:25:38 -07:00
Yong Wang
f42e86d95f PCI/DMAR: don't assume presence of RMRRs
RMRRs do not necessarily have to be present on all VT-d capable platforms.
The printk is just informational and does not need to be followed by an error
return.

Signed-off-by: Yong Y Wang <yong.y.wang@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: mark gross <mgross@linux.intel.com>
Cc: Keshavamurthy, Anil S <anil.s.keshavamurthy@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-07-22 14:14:18 -07:00
Kay Sievers
aab0de2451 driver core: remove KOBJ_NAME_LEN define
Kobjects do not have a limit in name size since a while, so stop
pretending that they do.

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-07-21 21:54:52 -07:00
Randy Dunlap
443bd1c4dd pci kernel-doc fatal error
Fix kernel-doc comments so that they don't produce errors.
Also cut some extraneous copy-paste text.

Error(linhead//drivers/pci/pci.c:1133): duplicate section name 'Description'
Error(linhead//drivers/pci/pci.c:1189): duplicate section name 'Description'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-21 10:43:26 -07:00
Ingo Molnar
acee709cab Merge branches 'x86/urgent', 'x86/amd-iommu', 'x86/apic', 'x86/cleanups', 'x86/core', 'x86/cpu', 'x86/fixmap', 'x86/gart', 'x86/kprobes', 'x86/memtest', 'x86/modules', 'x86/nmi', 'x86/pat', 'x86/reboot', 'x86/setup', 'x86/step', 'x86/unify-pci', 'x86/uv', 'x86/xen' and 'xen-64bit' into x86/for-linus 2008-07-21 16:37:17 +02:00
Ingo Molnar
0679c2f47d Merge branch 'linus' into pci-for-jesse 2008-07-18 22:39:59 +02:00
Linus Torvalds
dc7c65db28 Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (72 commits)
  Revert "x86/PCI: ACPI based PCI gap calculation"
  PCI: remove unnecessary volatile in PCIe hotplug struct controller
  x86/PCI: ACPI based PCI gap calculation
  PCI: include linux/pm_wakeup.h for device_set_wakeup_capable
  PCI PM: Fix pci_prepare_to_sleep
  x86/PCI: Fix PCI config space for domains > 0
  Fix acpi_pm_device_sleep_wake() by providing a stub for CONFIG_PM_SLEEP=n
  PCI: Simplify PCI device PM code
  PCI PM: Introduce pci_prepare_to_sleep and pci_back_from_sleep
  PCI ACPI: Rework PCI handling of wake-up
  ACPI: Introduce new device wakeup flag 'prepared'
  ACPI: Introduce acpi_device_sleep_wake function
  PCI: rework pci_set_power_state function to call platform first
  PCI: Introduce platform_pci_power_manageable function
  ACPI: Introduce acpi_bus_power_manageable function
  PCI: make pci_name use dev_name
  PCI: handle pci_name() being const
  PCI: add stub for pci_set_consistent_dma_mask()
  PCI: remove unused arch pcibios_update_resource() functions
  PCI: fix pci_setup_device()'s sprinting into a const buffer
  ...

Fixed up conflicts in various files (arch/x86/kernel/setup_64.c,
arch/x86/pci/irq.c, arch/x86/pci/pci.h, drivers/acpi/sleep/main.c,
drivers/pci/pci.c, drivers/pci/pci.h, include/acpi/acpi_bus.h) from x86
and ACPI updates manually.
2008-07-16 17:25:46 -07:00
Rafael J. Wysocki
a80a6da145 PCI ACPI: Drop the second argument of platform_pci_choose_state
Since the second argument of acpi_pci_choose_state() and
platform_pci_choose_state() is never used, remove it.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-07-16 23:27:02 +02:00
David Brownell
2fe2de5f6c ACPI PM: acpi_pm_device_sleep_state() cleanup
Get rid of a superfluous acpi_pm_device_sleep_state() parameter.  The
only legitimate value of that parameter must be derived from the first
parameter, which is what all the callers already do.  (However, this
does not address the fact that ACPI still doesn't set up those flags.)

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-07-16 23:27:02 +02:00
Ming Lei
9fce1bc956 PCI: remove unnecessary volatile in PCIe hotplug struct controller
Proper memory barriers have been added to order accesses
to ->cmd_busy, so volatile declaration for cmd_busy can
be removed.

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-07-16 08:46:43 -07:00
Stephen Rothwell
c300bd2fb5 PCI: include linux/pm_wakeup.h for device_set_wakeup_capable
drivers/pci/pci.c needs pm_wakeup.h since it uses device_set_wakup_capable().
The latter also needs to be stubbed out for !CONFIG_PM.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-07-14 14:30:21 -07:00
Rafael J. Wysocki
c157dfa3e4 PCI PM: Fix pci_prepare_to_sleep
The recently introduced pci_prepare_to_sleep() needs the following fix,
because there are systems which are not power manageable by ACPI (ie.
ACPI doesn't provide methods to put the device into low power states and
back), but require ACPI hooks to be executed for wake-up to work.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-07-14 14:25:44 -07:00
FUJITA Tomonori
46a7fa270a x86: make only GART code include gart.h
gart.h has only GART-specific stuff. Only GART code needs it. Other
IOMMU stuff should include iommu.h instead of gart.h.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-11 11:00:54 +02:00
Yinghai Lu
d52d53b8a5 RFC x86: try to remove arch_get_ram_range
want to remove arch_get_ram_range, and use early_node_map instead.

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08 12:48:27 +02:00
Rafael J. Wysocki
337001b6c4 PCI: Simplify PCI device PM code
If the offset of PCI device's PM capability in its configuration space,
the mask of states that the device supports PME# from and the D1 and D2
support bits are cached in the corresponding struct pci_dev, the PCI
device PM code can be simplified quite a bit.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-07-07 16:26:50 -07:00
Rafael J. Wysocki
404cc2d8ce PCI PM: Introduce pci_prepare_to_sleep and pci_back_from_sleep
Introduce functions pci_prepare_to_sleep() and pci_back_from_sleep(),
to be used by the PCI drivers that want to place their devices into
the lowest power state appropiate for them (PCI_D3hot, if the device
is not supposed to wake up the system, or the deepest state from
which the wake-up is possible, otherwise) while the system is being
prepared to go into a sleeping state and to put them back into D0
during the subsequent transition to the working state.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-07-07 16:26:33 -07:00
Rafael J. Wysocki
eb9d0fe40e PCI ACPI: Rework PCI handling of wake-up
* Introduce function acpi_pm_device_sleep_wake() for enabling and
  disabling the system wake-up capability of devices that are power
  manageable by ACPI.

* Introduce function acpi_bus_can_wakeup() allowing other (dependent)
  subsystems to check if ACPI is able to enable the system wake-up
  capability of given device.

* Introduce callback .sleep_wake() in struct pci_platform_pm_ops and
  for the ACPI PCI 'driver' make it use acpi_pm_device_sleep_wake().

* Introduce callback .can_wakeup() in struct pci_platform_pm_ops and
  for the ACPI 'driver' make it use acpi_bus_can_wakeup().

* Move the PME# handlig code out of pci_enable_wake() and split it
  into two functions, pci_pme_capable() and pci_pme_active(),
  allowing the caller to check if given device is capable of
  generating PME# from given power state and to enable/disable the
  device's PME# functionality, respectively.

* Modify pci_enable_wake() to use the new ACPI callbacks and the new
  PME#-related functions.

* Drop the generic .platform_enable_wakeup() callback that is not
  used any more.

* Introduce device_set_wakeup_capable() that will set the
  power.can_wakeup flag of given device.

* Rework PCI device PM initialization so that, if given device is
  capable of generating wake-up events, either natively through the
  PME# mechanism, or with the help of the platform, its
  power.can_wakeup flag is set and its power.should_wakeup flag is
  unset as appropriate.

* Make ACPI set the power.can_wakeup flag for devices found to be
  wake-up capable by it.

* Make the ACPI wake-up code enable/disable GPEs for devices that
  have the wakeup.flags.prepared flag set (which means that their
  wake-up power has been enabled).

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-07-07 16:26:28 -07:00
Rafael J. Wysocki
44e4e66eea PCI: rework pci_set_power_state function to call platform first
Rework pci_set_power_state() so that the platform callback is
invoked before the native mechanism, if necessary.  Also, make
the function check if the device is power manageable by the
platform before invoking the platform callback.

This may matter if the device dependent on additional power
resources controlled by the platform is being put into D0, in which
case those power resources must be turned on before we attempt to
handle the device itself.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-07-07 16:25:43 -07:00