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>
Many device drivers use the following sequence of statements to enable
the device to wake up the system while being in the D3_hot or D3_cold
low power state:
pci_enable_wake(pdev, PCI_D3hot, 1);
pci_enable_wake(pdev, PCI_D3cold, 1);
However, the second call is not necessary if the first one succeeds (the
ordering of the statements above doesn't matter here) and it may even be
harmful, because we are not supposed to enable PME# after the wake-up
power has been enabled for the device.
To allow drivers to overcome this problem, introduce function
pci_wake_from_d3() that will enable the device to wake up the system
from any of D3_hot and D3_cold as long as the wake-up from at least one
of them is supported.
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This patch adds the CONFIG_PCI_QUIRKS option which allows to remove all
the PCI quirks, which are not necessarily used on embedded systems when
PCI is working properly. As this is a size-reduction option, it depends
on CONFIG_EMBEDDED. It allows to save almost 12 kilobytes of kernel
code:
text data bss dec hex filename
1287806 123596 212992 1624394 18c94a vmlinux.old
1275854 123596 212992 1612442 189a9a vmlinux
-11952 0 0 -11952 -2EB0 +/-
This patch has originally been written by Zwane Mwaikambo
<zwane@arm.linux.org.uk> and is part of the Linux Tiny project.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Only accept dynids whose driver_data value matches one of the driver's
pci_driver_id entries. This prevents the user from accidentally passing
values the drivers do not expect.
Cc: Milton Miller <miltonm@bga.com>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
The driver flag dynids.use_driver_data is almost consistently not set,
and causes more problems than it solves. It was initially intended as a
flag to indicate whether a driver's usage of driver_data had been
carefully inspected and was ready for values from userspace. That audit
was never done, so most drivers just get a 0 for driver_data when new
IDs are added from userspace via sysfs. So remove the flag, allowing
drivers to see the data directly (a followon patch validates the passed
driver_data value against what the drivers expect).
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This converts things in drivers/pci to use %pR to printout the
content of a struct resource instead of hand-casted %llx or
other variants.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* git://git.infradead.org/mtd-2.6: (69 commits)
Revert "[MTD] m25p80.c code cleanup"
[MTD] [NAND] GPIO driver depends on ARM... for now.
[MTD] [NAND] sh_flctl: fix compile error
[MTD] [NOR] AT49BV6416 has swapped erase regions
[MTD] [NAND] GPIO NAND flash driver
[MTD] cmdlineparts documentation change - explain where mtd-id comes from
[MTD] cfi_cmdset_0002.c: Add Macronix CFI V1.0 TopBottom detection
[MTD] [NAND] Fix compilation warnings in drivers/mtd/nand/cs553x_nand.c
[JFFS2] Write buffer offset adjustment for NOR-ECC (Sibley) flash
[MTD] mtdoops: Fix a bug where block may not be erased
[MTD] mtdoops: Add a magic number to logged kernel oops
[MTD] mtdoops: Fix an off by one error
[JFFS2] Correct parameter names of jffs2_compress() in comments
[MTD] [NAND] sh_flctl: add support for Renesas SuperH FLCTL
[MTD] [NAND] Bug on atmel_nand HW ECC : OOB info not correctly written
[MTD] [MAPS] Remove unused variable after ROM API cleanup.
[MTD] m25p80.c extended jedec support (v2)
[MTD] remove unused mtd parameter in of_mtd_parse_partitions()
[MTD] [NAND] remove dead Kconfig associated with !CONFIG_PPC_MERGE
[MTD] [NAND] driver extension to support NAND on TQM85xx modules
...
Fix for a typo and and replacing incorrect word in the comment.
Signed-off-by: Ameya Palande <2ameya@gmail.com>
Cc: "Ashok Raj" <ashok.raj@intel.com>
Cc: "Shaohua Li" <shaohua.li@intel.com>
Cc: "Anil S Keshavamurthy" <anil.s.keshavamurthy@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
I dunno how this missed Bjorn and his quest to use %pF in commit
c80cfb0406 ("vsprintf: use new vsprintf
symbolic function pointer format"), but it did.
So use %pF in the two remaining places that still tried to print out
function pointers by hand.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 'kvm-updates/2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm: (134 commits)
KVM: ia64: Add intel iommu support for guests.
KVM: ia64: add directed mmio range support for kvm guests
KVM: ia64: Make pmt table be able to hold physical mmio entries.
KVM: Move irqchip_in_kernel() from ioapic.h to irq.h
KVM: Separate irq ack notification out of arch/x86/kvm/irq.c
KVM: Change is_mmio_pfn to kvm_is_mmio_pfn, and make it common for all archs
KVM: Move device assignment logic to common code
KVM: Device Assignment: Move vtd.c from arch/x86/kvm/ to virt/kvm/
KVM: VMX: enable invlpg exiting if EPT is disabled
KVM: x86: Silence various LAPIC-related host kernel messages
KVM: Device Assignment: Map mmio pages into VT-d page table
KVM: PIC: enhance IPI avoidance
KVM: MMU: add "oos_shadow" parameter to disable oos
KVM: MMU: speed up mmu_unsync_walk
KVM: MMU: out of sync shadow core
KVM: MMU: mmu_convert_notrap helper
KVM: MMU: awareness of new kvm_mmu_zap_page behaviour
KVM: MMU: mmu_parent_walk
KVM: x86: trap invlpg
KVM: MMU: sync roots on mmu reload
...
The PCI core wants to reorder the devices in the bus list. So move this
functionality out of the pci core and into the driver core so that
anyone else can also do this if needed. This also lets us change how
struct device is attached to drivers in the future without messing with
the PCI core.
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch extends the VT-d driver to support KVM
[Ben: fixed memory pinning]
[avi: move dma_remapping.h as well]
Signed-off-by: Kay, Allen M <allen.m.kay@intel.com>
Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Ben-Ami Yassour <benami@il.ibm.com>
Signed-off-by: Amit Shah <amit.shah@qumranet.com>
Acked-by: Mark Gross <mgross@linux.intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
This is loosely based on a patch by Jesse Barnes to check the user-space
PCI mappings though the sysfs interfaces. Quoting Jesse's original
explanation:
It's fairly common for applications to map PCI resources through sysfs.
However, with the current implementation, it's possible for an application
to map far more than the range corresponding to the resourceN file it
opened. This patch plugs that hole by checking the range at mmap time,
similar to what is done on platforms like sparc64 in their lower level
PCI remapping routines.
It was initially put together to help debug the e1000e NVRAM corruption
problem, since we initially thought an X driver might be walking past the
end of one of its mappings and clobbering the NVRAM. It now looks like
that's not the case, but doing the check is still important for obvious
reasons.
and this version of the patch differs in that it uses a helper function
to clarify the code, and does all the checks in pages (instead of bytes)
in order to avoid overflows when doing "<< PAGE_SHIFT" etc.
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
.... so that they can be used by MTD map drivers. Lets us close#9420
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
IO resource and ioremap debugging uncovered this ioremap() done
by drivers/pci/hotplug/ibmphp_ebda.c:
initcall pci_hotplug_init+0x0/0x41 returned 0 after 3 msecs
calling ibmphp_init+0x0/0x360 @ 1
ibmphpd: IBM Hot Plug PCI Controller Driver version: 0.6
resource map sanity check conflict: 0x9f800 0xaf5e7 0x9f800 0x9ffff reserved
------------[ cut here ]------------
WARNING: at arch/x86/mm/ioremap.c:175 __ioremap_caller+0x5c/0x226()
Pid: 1, comm: swapper Not tainted 2.6.27-rc7-tip-00914-g347b10f-dirty #36038
[<c013a72d>] warn_on_slowpath+0x41/0x68
[<c0156f00>] ? __lock_acquire+0x9ba/0xa7f
[<c012158c>] ? do_flush_tlb_all+0x0/0x59
[<c015ac31>] ? smp_call_function_mask+0x74/0x17d
[<c012158c>] ? do_flush_tlb_all+0x0/0x59
[<c013b228>] ? printk+0x1a/0x1c
[<c013f302>] ? iomem_map_sanity_check+0x82/0x8c
[<c0a773e8>] ? _read_unlock+0x22/0x25
[<c013f302>] ? iomem_map_sanity_check+0x82/0x8c
[<c0154e17>] ? trace_hardirqs_off+0xb/0xd
[<c0127731>] __ioremap_caller+0x5c/0x226
[<c0156158>] ? trace_hardirqs_on+0xb/0xd
[<c012767d>] ? iounmap+0x9d/0xa5
[<c01279dd>] ioremap_nocache+0x15/0x17
[<c0403c42>] ? ioremap+0xd/0xf
[<c0403c42>] ioremap+0xd/0xf
[<c0f1928f>] ibmphp_access_ebda+0x60/0xa0e
[<c0f17f64>] ibmphp_init+0xb5/0x360
[<c0101057>] do_one_initcall+0x57/0x138
[<c0f17eaf>] ? ibmphp_init+0x0/0x360
[<c0156158>] ? trace_hardirqs_on+0xb/0xd
[<c0148d75>] ? __queue_work+0x2b/0x30
[<c0f17eaf>] ? ibmphp_init+0x0/0x360
[<c0f015a0>] kernel_init+0x17b/0x1e2
[<c0f01425>] ? kernel_init+0x0/0x1e2
[<c01178b3>] kernel_thread_helper+0x7/0x10
=======================
---[ end trace a7919e7f17c0a725 ]---
initcall ibmphp_init+0x0/0x360 returned -19 after 144 msecs
calling zt5550_init+0x0/0x6a @ 1
the problem is this code:
io_mem = ioremap (ebda_seg<<4, 65000);
it assumes that the EBDA is 65000 bytes. But BIOS EBDA pointers are
at most 1K large.
_if_ the Rio code truly extends upon the customary EBDA size it needs
to iounmap() this memory and ioremap() it larger, once it knows it from
the generic descriptors that a Rio system is around.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
pci_get_subsys() changed in 2.6.26 so that the from pointer is modified
when the call is being invoked, so fix up the 'const' marking of it that
the compiler is complaining about.
Reported-by: Rufus & Azrael <rufus-azrael@numericable.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
pcie_aspm=force did not work because aspm_force was being double negated
leading to the sanity check failing. Moving a bracket should fix this.
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Sitsofe Wheeler <sitsofe@yahoo.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
There's no good reason why a resource_size_t shouldn't just be a
physical address, so simply redefine it in terms of phys_addr_t.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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>
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>
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>
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>
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>
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>
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.
I'd still be grateful if someone could test it on a DG33BU with the old
BIOS though, since I've killed mine. I tested the DMI version, but not
this one.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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>
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>
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>
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>
Commit f46753c5e3 ("PCI: introduce pci_slot") removed the need for this error path. Eliminate this warning:
drivers/pci/hotplug/rpaphp_slot.c: In function 'rpaphp_register_slot':
drivers/pci/hotplug/rpaphp_slot.c:151: warning: label 'sysfs_fail' defined but not used
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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>
_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>
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>
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>
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>
