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2009-04-06PCI: SR-IOV quirk for Intel 82576 NICYu Zhao1-0/+48
If BIOS doesn't allocate resources for the SR-IOV BARs, zero the Flash BAR and program the SR-IOV BARs to use the old Flash Memory Space. Please refer to Intel 82576 Gigabit Ethernet Controller Datasheet section 7.9.2.14.2 for details. http://download.intel.com/design/network/datashts/82576_Datasheet.pdf Signed-off-by: Yu Zhao <yu.zhao@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-04-05Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6Linus Torvalds1-2/+2
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (140 commits) ACPI: processor: use .notify method instead of installing handler directly ACPI: button: use .notify method instead of installing handler directly ACPI: support acpi_device_ops .notify methods toshiba-acpi: remove MAINTAINERS entry ACPI: battery: asynchronous init acer-wmi: Update copyright notice & documentation acer-wmi: Cleanup the failure cleanup handling acer-wmi: Blacklist Acer Aspire One video: build fix thinkpad-acpi: rework brightness support thinkpad-acpi: enhanced debugging messages for the fan subdriver thinkpad-acpi: enhanced debugging messages for the hotkey subdriver thinkpad-acpi: enhanced debugging messages for rfkill subdrivers thinkpad-acpi: restrict access to some firmware LEDs thinkpad-acpi: remove HKEY disable functionality thinkpad-acpi: add new debug helpers and warn of deprecated atts thinkpad-acpi: add missing log levels thinkpad-acpi: cleanup debug helpers thinkpad-acpi: documentation cleanup thinkpad-acpi: drop ibm-acpi alias ...
2009-04-05Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumaskLinus Torvalds1-2/+1
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask: (36 commits) cpumask: remove cpumask allocation from idle_balance, fix numa, cpumask: move numa_node_id default implementation to topology.h, fix cpumask: remove cpumask allocation from idle_balance x86: cpumask: x86 mmio-mod.c use cpumask_var_t for downed_cpus x86: cpumask: update 32-bit APM not to mug current->cpus_allowed x86: microcode: cleanup x86: cpumask: use work_on_cpu in arch/x86/kernel/microcode_core.c cpumask: fix CONFIG_CPUMASK_OFFSTACK=y cpu hotunplug crash numa, cpumask: move numa_node_id default implementation to topology.h cpumask: convert node_to_cpumask_map[] to cpumask_var_t cpumask: remove x86 cpumask_t uses. cpumask: use cpumask_var_t in uv_flush_tlb_others. cpumask: remove cpumask_t assignment from vector_allocation_domain() cpumask: make Xen use the new operators. cpumask: clean up summit's send_IPI functions cpumask: use new cpumask functions throughout x86 x86: unify cpu_callin_mask/cpu_callout_mask/cpu_initialized_mask/cpu_sibling_setup_mask cpumask: convert struct cpuinfo_x86's llc_shared_map to cpumask_var_t cpumask: convert node_to_cpumask_map[] to cpumask_var_t x86: unify 32 and 64-bit node_to_cpumask_map ...
2009-04-05Merge branch 'linus' into releaseLen Brown37-1647/+2869
Conflicts: arch/x86/kernel/cpu/cpufreq/longhaul.c Signed-off-by: Len Brown <len.brown@intel.com>
2009-04-04intel-iommu: Handle PCI domains appropriately.David Woodhouse2-28/+49
We were comparing {bus,devfn} and assuming that a match meant it was the same device. It doesn't -- the same {bus,devfn} can exist in multiple PCI domains. Include domain number in device identification (and call it 'segment' in most places, because there's already a lot of references to 'domain' which means something else, and this code is infected with ACPI thinking already). Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-04-04intel-iommu: Fix device-to-iommu mapping for PCI-PCI bridges.David Woodhouse1-1/+6
When the DMAR table identifies that a PCI-PCI bridge belongs to a given IOMMU, that means that the bridge and all devices behind it should be associated with the IOMMU. Not just the bridge itself. This fixes the device_to_iommu() function accordingly. (It's broken if you have the same PCI bus numbers in multiple domains, but this function was always broken in that way; I'll be dealing with that later). Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-04-04x2apic/intr-remap: decouple interrupt remapping from x2apicHan, Weidong1-0/+9
interrupt remapping must be enabled before enabling x2apic, but interrupt remapping doesn't depend on x2apic, it can be used separately. Enable interrupt remapping in init_dmars even x2apic is not supported. [dwmw2: Update Kconfig accordingly, fix build with INTR_REMAP && !X2APIC] Signed-off-by: Weidong Han <weidong.han@intel.com> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-04-04x86, dmar: check if it's initialized before disable queue invalidationHan, Weidong1-0/+7
If queue invalidation is disabled after it's already initialized, dmar_enable_qi won't re-enable it due to iommu->qi is allocated. It may result in system hang when use queue invalidation. Add this check to avoid this case. Signed-off-by: Weidong Han <weidong.han@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-04-03Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivialLinus Torvalds1-1/+1
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (28 commits) trivial: Update my email address trivial: NULL noise: drivers/mtd/tests/mtd_*test.c trivial: NULL noise: drivers/media/dvb/frontends/drx397xD_fw.h trivial: Fix misspelling of "Celsius". trivial: remove unused variable 'path' in alloc_file() trivial: fix a pdlfush -> pdflush typo in comment trivial: jbd header comment typo fix for JBD_PARANOID_IOFAIL trivial: wusb: Storage class should be before const qualifier trivial: drivers/char/bsr.c: Storage class should be before const qualifier trivial: h8300: Storage class should be before const qualifier trivial: fix where cgroup documentation is not correctly referred to trivial: Give the right path in Documentation example trivial: MTD: remove EOL from MODULE_DESCRIPTION trivial: Fix typo in bio_split()'s documentation trivial: PWM: fix of #endif comment trivial: fix typos/grammar errors in Kconfig texts trivial: Fix misspelling of firmware trivial: cgroups: documentation typo and spelling corrections trivial: Update contact info for Jochen Hein trivial: fix typo "resgister" -> "register" ...
2009-04-03intel-iommu: set compatibility format interruptHan, Weidong1-0/+15
When extended interrupt mode (x2apic mode) is not supported in a system, it must set compatibility format interrupt to bypass interrupt remapping, otherwise compatibility format interrupts will be blocked. This will be used when interrupt remapping is enabled while x2apic is not supported. Signed-off-by: Weidong Han <weidong.han@intel.com> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-04-03Intel IOMMU Suspend/Resume Support - Interrupt RemappingFenghua Yu1-2/+59
This patch enables suspend/resume for interrupt remapping. During suspend, interrupt remapping is disabled. When resume, interrupt remapping is enabled again. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-04-03Intel IOMMU Suspend/Resume Support - Queued InvalidationFenghua Yu1-15/+55
This patch supports queued invalidation suspend/resume. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-04-03Intel IOMMU Suspend/Resume Support - DMARFenghua Yu1-0/+146
This patch implements the suspend and resume feature for Intel IOMMU DMAR. It hooks to kernel suspend and resume interface. When suspend happens, it saves necessary hardware registers. When resume happens, it restores the registers and restarts IOMMU by enabling translation, setting up root entry, and re-enabling queued invalidation. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-04-03Merge git://git.infradead.org/iommu-2.6Linus Torvalds1-19/+96
* git://git.infradead.org/iommu-2.6: intel-iommu: Fix address wrap on 32-bit kernel. intel-iommu: Enable DMAR on 32-bit kernel. intel-iommu: fix PCI device detach from virtual machine intel-iommu: VT-d page table to support snooping control bit iommu: Add domain_has_cap iommu_ops intel-iommu: Snooping control support Fixed trivial conflicts in arch/x86/Kconfig and drivers/pci/intel-iommu.c
2009-04-01Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6Linus Torvalds34-1241/+2149
* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (88 commits) PCI: fix HT MSI mapping fix PCI: don't enable too much HT MSI mapping x86/PCI: make pci=lastbus=255 work when acpi is on PCI: save and restore PCIe 2.0 registers PCI: update fakephp for bus_id removal PCI: fix kernel oops on bridge removal PCI: fix conflict between SR-IOV and config space sizing powerpc/PCI: include pci.h in powerpc MSI implementation PCI Hotplug: schedule fakephp for feature removal PCI Hotplug: rename legacy_fakephp to fakephp PCI Hotplug: restore fakephp interface with complete reimplementation PCI: Introduce /sys/bus/pci/devices/.../rescan PCI: Introduce /sys/bus/pci/devices/.../remove PCI: Introduce /sys/bus/pci/rescan PCI: Introduce pci_rescan_bus() PCI: do not enable bridges more than once PCI: do not initialize bridges more than once PCI: always scan child buses PCI: pci_scan_slot() returns newly found devices PCI: don't scan existing devices ... Fix trivial append-only conflict in Documentation/feature-removal-schedule.txt
2009-03-31Merge branch 'cpumask-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tipRusty Russell1-2/+1
Conflicts: arch/x86/include/asm/topology.h drivers/oprofile/buffer_sync.c (Both cases: changed in Linus' tree, removed in Ingo's).
2009-03-30Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6Linus Torvalds3-143/+177
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6: PCI PM: Make pci_prepare_to_sleep() disable wake-up if needed radeonfb: Use __pci_complete_power_transition() PCI PM: Introduce __pci_[start|complete]_power_transition() (rev. 2) PCI PM: Restore config spaces of all devices during early resume PCI PM: Make pci_set_power_state() handle devices with no PM support PCI PM: Put devices into low power states during late suspend (rev. 2) PCI PM: Move pci_restore_standard_config to pci-driver.c PCI PM: Use pci_set_power_state during early resume PCI PM: Consistently use variable name "error" for pm call return values kexec: Change kexec jump code ordering PM: Change hibernation code ordering PM: Change suspend code ordering PM: Rework handling of interrupts during suspend-resume PM: Introduce functions for suspending and resuming device interrupts
2009-03-30Merge branch 'linus' into cpumask-for-linusIngo Molnar4-241/+440
Conflicts: arch/x86/kernel/cpu/common.c
2009-03-30Merge branch 'iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tipLinus Torvalds1-17/+33
* 'iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (60 commits) dma-debug: make memory range checks more consistent dma-debug: warn of unmapping an invalid dma address dma-debug: fix dma_debug_add_bus() definition for !CONFIG_DMA_API_DEBUG dma-debug/x86: register pci bus for dma-debug leak detection dma-debug: add a check dma memory leaks dma-debug: add checks for kernel text and rodata dma-debug: print stacktrace of mapping path on unmap error dma-debug: Documentation update dma-debug: x86 architecture bindings dma-debug: add function to dump dma mappings dma-debug: add checks for sync_single_sg_* dma-debug: add checks for sync_single_range_* dma-debug: add checks for sync_single_* dma-debug: add checking for [alloc|free]_coherent dma-debug: add add checking for map/unmap_sg dma-debug: add checking for map/unmap_page/single dma-debug: add core checking functions dma-debug: add debugfs interface dma-debug: add kernel command line parameters dma-debug: add initialization code ... Fix trivial conflicts due to whitespace changes in arch/x86/kernel/pci-nommu.c
2009-03-30PCI PM: Make pci_prepare_to_sleep() disable wake-up if neededRafael J. Wysocki1-1/+1
If the device is not supposed to wake up the system, ie. when device_may_wakeup(&dev->dev) returns 'false', pci_prepare_to_sleep() should pass 'false' to pci_enable_wake() so that it calls the platform to disable the wake-up capability of the device. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-30PCI PM: Introduce __pci_[start|complete]_power_transition() (rev. 2)Rafael J. Wysocki1-18/+51
The radeonfb driver needs to program the device's PMCSR directly due to some quirky hardware it has to handle (see http://bugzilla.kernel.org/show_bug.cgi?id=12846 for details) and after doing that it needs to call the platform (usually ACPI) to finish the power transition of the device. Currently it uses pci_set_power_state() for this purpose, however making a specific assumption about the internal behavior of this function, which has changed recently so that this assumption is no longer satisfied. For this reason, introduce __pci_complete_power_transition() that may be called by the radeonfb driver to complete the power transition of the device. For symmetry, introduce __pci_start_power_transition(). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-30PCI PM: Restore config spaces of all devices during early resumeRafael J. Wysocki1-7/+9
At present the configuration spaces of PCI devices that have no drivers or no PM support in the drivers (either legacy or through a pm object) are not saved during suspend and, consequently, they are not restored during resume. This generally may lead to the state of the system being slightly inconsistent after the resume, so it's better to save and restore the configuration spaces of these devices as well. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Ingo Molnar <mingo@elte.hu> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-30PCI PM: Make pci_set_power_state() handle devices with no PM supportRafael J. Wysocki1-6/+12
There is a problem with PCI devices without any PM support (either native or through the platform) that pci_set_power_state() always returns error code for them, even if they are being put into D0. However, such devices are always in D0, so pci_set_power_state() should return success when attempting to put such a device into D0. It also should update the current_state field for these devices as appropriate. This modification is necessary so that the standard configuration registers of these devices are successfully restored by pci_restore_standard_config() during the "early" phase of resume. In addition, pci_set_power_state() should check the value of current_state before calling the platform to change the power state of the device to avoid doing that unnecessarily. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Ingo Molnar <mingo@elte.hu> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-30PCI PM: Put devices into low power states during late suspend (rev. 2)Rafael J. Wysocki1-53/+81
Once we have allowed timer interrupts to be enabled during the late phase of suspending devices, we are now able to use the generic pci_set_power_state() to put PCI devices into low power states at that time. We can also use some related platform callbacks, like the ones preparing devices for wake-up, during the late suspend. Doing this will allow us to avoid the race condition where a device using shared interrupts is put into a low power state with interrupts enabled and then an interrupt (for another device) comes in and confuses its driver. At the same time, devices that don't support the native PCI PM or that require some additional, platform-specific operations to be carried out to put them into low power states will be handled as appropriate. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Ingo Molnar <mingo@elte.hu> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-30PCI PM: Move pci_restore_standard_config to pci-driver.cRafael J. Wysocki3-22/+17
Move pci_restore_standard_config() from pci.c to pci-driver.c and make it static. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Ingo Molnar <mingo@elte.hu> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-30PCI PM: Use pci_set_power_state during early resumeRafael J. Wysocki1-39/+9
Once we have allowed timer interrupts to be enabled during the early phase of resuming devices, we are now able to use the generic pci_set_power_state() to put PCI devices into D0 at that time. Then, the platform-specific PM code will have a chance to handle devices that don't implement the native PCI PM or that require some additional, platform-specific operations to be carried out to power them up. Also, by doing this we can simplify the code quite a bit. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Ingo Molnar <mingo@elte.hu> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-30PCI PM: Consistently use variable name "error" for pm call return valuesFrans Pop1-10/+10
I noticed two functions use a variable "i" to store the return value of PM function calls while the rest of the file uses "error". As "i" normally indicates a counter of some sort it seems better to keep this consistent. Signed-off-by: Frans Pop <elendil@planet.nl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2009-03-30PCI: fix HT MSI mapping fixYinghai Lu1-2/+30
Impact: fix bug This patch reworks the nv_msi_ht_cap_quirk() and will only try to avoid to enable ht_msi on device following that root dev, and don't touch that root dev, but only do that trick with end_device on the chain. Reported-by: Prakash Punnoor <prakash@punnoor.de> Tested-by: Prakash Punnoor <prakash@punnoor.de> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-30trivial: Fix misspelling of firmwareNick Andrew1-1/+1
Fix misspelling of firmware. Signed-off-by: Nick Andrew <nick@nick-andrew.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-03-28Merge branch 'linus' into core/iommuIngo Molnar3-4/+9
Conflicts: arch/x86/Kconfig
2009-03-28Merge branch 'linus' into x86/coreIngo Molnar2-2/+3
2009-03-27Merge branch 'core/percpu' into percpu-cpumask-x86-for-linus-2Ingo Molnar2-2/+6
Conflicts: arch/parisc/kernel/irq.c arch/x86/include/asm/fixmap_64.h arch/x86/include/asm/setup.h kernel/irq/handle.c Semantic merge: arch/x86/include/asm/fixmap.h Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-26PCI: don't enable too much HT MSI mappingYinghai Lu1-36/+82
Impact: fix bug Prakash reported that his c51-mcp51 system ondie sound card doesn't work MSI but if he hack out the HT-MSI on mcp51, the MSI will work well with sound card. This patch reworks nv_msi_ht_cap_quirk() and will only avoid enabling ht_msi on devices following that root device. Reported-by: Prakash Punnoor <prakash@punnoor.de> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-26Merge branch 'irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tipLinus Torvalds1-1/+1
* 'irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (32 commits) x86: disable __do_IRQ support sparseirq, powerpc/cell: fix unused variable warning in interrupt.c genirq: deprecate obsolete typedefs and defines genirq: deprecate __do_IRQ genirq: add doc to struct irqaction genirq: use kzalloc instead of explicit zero initialization genirq: make irqreturn_t an enum genirq: remove redundant if condition genirq: remove unused hw_irq_controller typedef irq: export remove_irq() and setup_irq() symbols irq: match remove_irq() args with setup_irq() irq: add remove_irq() for freeing of setup_irq() irqs genirq: assert that irq handlers are indeed running in hardirq context irq: name 'p' variables a bit better irq: further clean up the free_irq() code flow irq: refactor and clean up the free_irq() code flow irq: clean up manage.c irq: use GFP_KERNEL for action allocation in request_irq() kernel/irq: fix sparse warning: make symbol static irq: optimize init_kstat_irqs/init_copy_kstat_irqs ...
2009-03-26PCI: save and restore PCIe 2.0 registersYu Zhao1-1/+10
PCIe 2.0 defines several new registers (Device Control 2, Link Control 2, and Slot Control 2). Save and retore them in pci_save_pcie_state() and pci_restore_pcie_state(). Signed-off-by: Yu Zhao <yu.zhao@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-26PCI: update fakephp for bus_id removalStephen Rothwell1-1/+2
Get rid of a new use of bus_id that snuck in. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-26PCI: fix kernel oops on bridge removalKenji Kaneshige1-0/+1
Fix the following kernel oops problem that happens when removing PCI bridge with pciehp loaded. It should also occur with other hotplug driver that is implemented as a bridge's driver. [ 459.997257] pciehp 0000:2f:04.0:pcie24: unloading service driver pciehp [ 459.997495] general protection fault: 0000 [#1] SMP [ 459.997737] last sysfs file: /sys/devices/pci0000:00/0000:00:04.0/0000:2e:00.0/0000:2f:04.0/remove [ 459.997964] CPU 4 [ 459.998129] Modules linked in: pciehp ipv6 autofs4 hidp rfcomm l2cap bluetooth sunrpc cpufreq_ondemand acpi_cpufreq dm_mirror dm_region_hash dm_log dm_multipath scsi_dh dm_mod sbs sbshc battery ac parport_pc lp parport mptspi mptscsih mptbase scsi_transport_spi e1000e sg sr_mod cdrom button serio_raw i2c_i801 i2c_core shpchp pcspkr ata_piix libata megaraid_sas sd_mod scsi_mod crc_t10dif ext3 jbd uhci_hcd ohci_hcd ehci_hcd [last unloaded: microcode] [ 459.998129] Pid: 56, comm: events/4 Not tainted 2.6.29-rc8-kk #1 PRIMERGY [ 459.998129] RIP: 0010:[<ffffffff803bf047>] [<ffffffff803bf047>] pci_slot_release+0x37/0x100 [ 459.998129] RSP: 0018:ffff88083b3bf9e0 EFLAGS: 00010246 [ 459.998129] RAX: ffff88083adc5158 RBX: ffff880836c1bc80 RCX: 6b6b6b6b6b6b6b6b [ 459.998129] RDX: 0000000000000000 RSI: ffffffff803a77f0 RDI: ffff880836c1bc48 [ 459.998129] RBP: ffff88083b3bfa00 R08: 0000000000000002 R09: 0000000000000000 [ 459.998129] R10: 0000000000000000 R11: 0000000000000000 R12: ffff880836c1bc48 [ 459.998129] R13: ffff880836c1bc20 R14: ffff880836c1bc48 R15: ffff880836d1ec38 [ 459.998129] FS: 0000000000000000(0000) GS:ffff88083ccc3770(0000) knlGS:0000000000000000 [ 459.998129] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b [ 459.998129] CR2: 00007f1562f1d558 CR3: 0000000838090000 CR4: 00000000000006e0 [ 459.998129] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 459.998129] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 459.998129] Process events/4 (pid: 56, threadinfo ffff88083b3be000, task ffff88083b3b3e40) [ 459.998129] Stack: [ 459.998129] ffff880836c1bc80 ffff880836c1bc48 ffffffff80793320 ffff88083b0d0960 [ 459.998129] ffff88083b3bfa30 ffffffff803a788a ffff880836c1bc80 ffffffff803a77f0 [ 459.998129] ffff880836c1bc20 ffff880836d1ec38 ffff88083b3bfa50 ffffffff803a8ce7 [ 459.998129] Call Trace: [ 459.998129] [<ffffffff803a788a>] kobject_release+0x9a/0x290 [ 459.998129] [<ffffffff803a77f0>] ? kobject_release+0x0/0x290 [ 459.998129] [<ffffffff803a8ce7>] kref_put+0x37/0x80 [ 459.998129] [<ffffffff803a76f7>] kobject_put+0x27/0x60 [ 459.998129] [<ffffffff803bebcc>] ? pci_destroy_slot+0x3c/0xc0 [ 459.998129] [<ffffffff803bebd5>] pci_destroy_slot+0x45/0xc0 [ 459.998129] [<ffffffff803c797d>] pci_hp_deregister+0x13d/0x210 [ 459.998129] [<ffffffffa031141d>] cleanup_slots+0x2d/0x80 [pciehp] [ 459.998129] [<ffffffffa0311735>] pciehp_remove+0x15/0x30 [pciehp] [ 459.998129] [<ffffffff803c4c99>] pcie_port_remove_service+0x69/0x90 [ 459.998129] [<ffffffff80441da9>] __device_release_driver+0x59/0x90 [ 459.998129] [<ffffffff80441edb>] device_release_driver+0x2b/0x40 [ 459.998129] [<ffffffff804419d6>] bus_remove_device+0xa6/0x120 [ 459.998129] [<ffffffff8043e46b>] device_del+0x12b/0x190 [ 459.998129] [<ffffffff803c4d90>] ? remove_iter+0x0/0x40 [ 459.998129] [<ffffffff8043e4f6>] device_unregister+0x26/0x70 [ 459.998129] [<ffffffff803c4dbf>] remove_iter+0x2f/0x40 [ 459.998129] [<ffffffff8043ddf3>] device_for_each_child+0x33/0x60 [ 459.998129] [<ffffffff8033ee30>] ? sysfs_schedule_callback_work+0x0/0x50 [ 459.998129] [<ffffffff803c4d30>] pcie_port_device_remove+0x30/0x80 [ 459.998129] [<ffffffff803c55a1>] pcie_portdrv_remove+0x11/0x20 [ 459.998129] [<ffffffff803bfeb2>] pci_device_remove+0x32/0x70 [ 459.998129] [<ffffffff80441da9>] __device_release_driver+0x59/0x90 [ 459.998129] [<ffffffff80441edb>] device_release_driver+0x2b/0x40 [ 459.998129] [<ffffffff804419d6>] bus_remove_device+0xa6/0x120 [ 459.998129] [<ffffffff8043e46b>] device_del+0x12b/0x190 [ 459.998129] [<ffffffff8043e4f6>] device_unregister+0x26/0x70 [ 459.998129] [<ffffffff803ba969>] pci_stop_dev+0x49/0x60 [ 459.998129] [<ffffffff803baab0>] pci_remove_bus_device+0x40/0xc0 [ 459.998129] [<ffffffff803c10d9>] remove_callback+0x29/0x40 [ 459.998129] [<ffffffff8033ee4f>] sysfs_schedule_callback_work+0x1f/0x50 [ 459.998129] [<ffffffff8025769a>] run_workqueue+0x15a/0x230 [ 459.998129] [<ffffffff80257648>] ? run_workqueue+0x108/0x230 [ 459.998129] [<ffffffff8025846f>] worker_thread+0x9f/0x100 [ 459.998129] [<ffffffff8025bce0>] ? autoremove_wake_function+0x0/0x40 [ 459.998129] [<ffffffff802583d0>] ? worker_thread+0x0/0x100 [ 459.998129] [<ffffffff8025b89d>] kthread+0x4d/0x80 [ 459.998129] [<ffffffff8020d4ba>] child_rip+0xa/0x20 [ 459.998129] [<ffffffff8020cebc>] ? restore_args+0x0/0x30 [ 459.998129] [<ffffffff8025b850>] ? kthread+0x0/0x80 [ 459.998129] [<ffffffff8020d4b0>] ? child_rip+0x0/0x20 [ 459.998129] Code: 56 49 89 fe 41 55 4c 8d 6f d8 41 54 53 74 09 f6 05 b8 05 c7 00 08 75 72 49 8b 45 00 48 8b 48 28 eb 05 66 90 48 89 f1 49 8b 45 00 <48> 8b 31 48 83 c0 28 0f 18 0e 48 39 c1 74 1c 8b 41 38 41 0f b6 [ 459.998129] RIP [<ffffffff803bf047>] pci_slot_release+0x37/0x100 [ 459.998129] RSP <ffff88083b3bf9e0> [ 460.018595] ---[ end trace 5a08d2095374aedc ]--- The pci_remove_bus_device() removes all buses and devices under the bridge, and then removes the bridge. So the remove() callback of the hotplug drivers implemented as a bridge's driver is executed after the struct pci_bus of the bridge's secondary bus is removed. The remove() callback of those driver unregisters the slot using pci_destroy_slot(), and slot's release callback refers to the the struct pci_bus that was already freed. This is the cause of the kernel oops. This patch solves the problem by stopping bus drivers before removing the bridge and its child bus and devices. Acked-by: Alex Chiang <achiang@hp.com> Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-26PCI: fix conflict between SR-IOV and config space sizingYu Zhao1-4/+3
New pci_cfg_space_size() needs invalid pdev->class, put it in the right place in the pci_setup_device(). Signed-off-by: Yu Zhao <yu.zhao@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-26ACPICA: Update FADT flag definitionsBob Moore1-2/+2
Add new flags in the Boot Architecture flags field. Update comments for all FADT flags. Add FADT version when each flag was defined. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-25intel-iommu: Fix address wrap on 32-bit kernel.Zhao, Yu1-1/+3
The problem is in dma_pte_clear_range and dma_pte_free_pagetable. When intel_unmap_single and intel_unmap_sg call them, the end address may be zero if the 'start_addr + size' rounds up. So no PTE gets cleared. The uncleared PTE fires the BUG_ON when it's used again to create new mappings. After I modified dma_pte_clear_range a bit, the BUG_ON is gone. Tested both 32 and 32 PAE modes on Intel X58 and Q35 platforms. Signed-off-by: Yu Zhao <yu.zhao@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-03-25intel-iommu: Enable DMAR on 32-bit kernel.David Woodhouse1-12/+8
If we fix a few highmem-related thinkos and a couple of printk format warnings, the Intel IOMMU driver works fine in a 32-bit kernel. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-03-25intel-iommu: fix PCI device detach from virtual machineHan, Weidong1-0/+29
When assign a device behind conventional PCI bridge or PCIe to PCI/PCI-x bridge to a domain, it must assign its bridge and may also need to assign secondary interface to the same domain. Dependent assignment is already there, but dependent deassignment is missed when detach device from virtual machine. This results in conventional PCI device assignment failure after it has been assigned once. This patch addes dependent deassignment, and fixes the issue. Signed-off-by: Weidong Han <weidong.han@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-03-24pci: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers1-1/+2
Cc: jbarnes@virtuousgeek.org Cc: linux-pci@vger.kernel.org Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
2009-03-24intel-iommu: VT-d page table to support snooping control bitSheng Yang1-1/+11
The user can request to enable snooping control through VT-d page table. Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-03-24iommu: Add domain_has_cap iommu_opsSheng Yang1-0/+12
This iommu_op can tell if domain have a specific capability, like snooping control for Intel IOMMU, which can be used by other components of kernel to adjust the behaviour. Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-03-24intel-iommu: Snooping control supportSheng Yang1-5/+33
Snooping control enabled IOMMU to guarantee DMA cache coherency and thus reduce software effort (VMM) in maintaining effective memory type. Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-03-20PCI Hotplug: rename legacy_fakephp to fakephpAlex Chiang2-1/+1
We wanted to replace fakephp wholesale, so rename legacy_fakephp back to fakephp. Yes, this is a silly commit, but it produces a much easier patch to read and review. Signed-off-by: Alex Chiang <achiang@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-20PCI Hotplug: restore fakephp interface with complete reimplementationTrent Piepho3-396/+163
A complete re-implementation of fakephp is necessary if it is to present its former interface (pre-2.6.27, when it broke). The reason is that PCI hotplug drivers call pci_hp_register(), which enforces the rule that only one /sys/bus/pci/slots/ file may be created per physical slot. The change breaks the old fakephp's assumption that it could create a file per function. So we re-implement fakephp to avoid using the standard PCI hotplug API so that we can restore the old fakephp user interface. It puts entries in /sys/bus/pci/slots with the names of all PCI devices/functions, exactly symmetrical to what is shown in /sys/bus/pci/devices. Each slots/ entry has a "power" attribute, which works the same way as the fakephp driver's power attribute has worked. There are a few improvements over old fakephp, which couldn't handle PCI devices being added or removed via a means outside of fakephp's knowledge. If a device was added another way, old fakephp didn't notice and didn't create the fake slot for it. If a device was removed another way, old fakephp didn't delete the fake slot for it (and accessing the stale slot caused an oops). The new implementation overcomes these limitations. As a consequence, removing a bridge with other devices behind it now works as well, which is something else old fakephp couldn't do previously. This duplicates a tiny bit of the code in the PCI core that does this same function. Re-using that code ends up being more complex than duplicating it, and it makes code in the PCI core more ugly just to support this legacy fakephp interface compatibility layer. Reviewed-by: James Cameron <qz@hp.com> Signed-off-by: Trent Piepho <xyzzy@speakeasy.org> Signed-off-by: Alex Chiang <achiang@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-20PCI: Introduce /sys/bus/pci/devices/.../rescanAlex Chiang1-0/+19
This interface allows the user to force a rescan of the device's parent bus and all subordinate buses, and rediscover devices removed earlier from this part of the device tree. Cc: Trent Piepho <xyzzy@speakeasy.org> Signed-off-by: Alex Chiang <achiang@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-20PCI: Introduce /sys/bus/pci/devices/.../removeAlex Chiang1-0/+36
This patch adds an attribute named "remove" to a PCI device's sysfs directory. Writing a non-zero value to this attribute will remove the PCI device and any children of it. Trent Piepho wrote the original implementation and documentation. Thanks to Vegard Nossum for testing under kmemcheck and finding locking issues with the sysfs interface. Cc: Trent Piepho <xyzzy@speakeasy.org> Tested-by: Vegard Nossum <vegard.nossum@gmail.com> Signed-off-by: Alex Chiang <achiang@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>