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* PCI: alpha: use generic INTx swizzle from PCI coreBjorn Helgaas2009-01-072-20/+2
| | | | | | | | | | | Use the generic pci_common_swizzle() instead of arch-specific code. Note that pci_common_swizzle() loops based on dev->bus->self, not dev->bus->parent as the alpha common_swizzle() did. I think they are equivalent for this purpose. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: add pci_common_swizzle() for INTx swizzlingBjorn Helgaas2009-01-072-0/+21
| | | | | | | | | | | | This patch adds pci_common_swizzle(), which swizzles INTx values all the way up to a root bridge. This common implementation can replace several architecture-specific ones. This should someday be combined with pci_get_interrupt_pin(), but I left it separate for now to make reviewing easier. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI hotplug: introduce functions for ACPI slot detectionKenji Kaneshige2009-01-075-142/+100
| | | | | | | | | | | | | | | | | | | | | | | | | | Some ACPI related PCI hotplug code can be shared among PCI hotplug drivers. This patch introduces the following functions in drivers/pci/hotplug/acpi_pcihp.c to share the code, and changes acpiphp and pciehp to use them. - int acpi_pci_detect_ejectable(struct pci_bus *pbus) This checks if the specified PCI bus has ejectable slots. - int acpi_pci_check_ejectable(struct pci_bus *pbus, acpi_handle handle) This checks if the specified handle is ejectable ACPI PCI slot. The 'pbus' parameter is needed to check if 'handle' is PCI related ACPI object. This patch also introduces the following inline function in include/linux/pci-acpi.h, which is useful to get ACPI handle of the PCI bridge from struct pci_bus of the bridge's secondary bus. - static inline acpi_handle acpi_pci_get_bridge_handle(struct pci_bus *pbus) This returns ACPI handle of the PCI bridge which generates PCI bus specified by 'pbus'. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: pciehp: add auto option to pciehp_detect_modeKenji Kaneshige2009-01-071-4/+76
| | | | | | | | | | | | | | | | | | | ACPI based hot-pluggable PCIe slot detection logic was added to prevent the problem non hot-pluggable PCIe slot was detected as hot-pluggable. The slot detection logic can be selected through 'pciehp_detect_mode', but it would be better if it is selected automatically. This patch adds 'auto' option for 'pciehp_detect_mode'. When it is specified, pciehp judges which 'acpi' or 'pcie' should be used. It seems that the physical slot number is duplicated among some slots on most of the platforms with the above-mentioned problem. So 'auto' mode uses this information to judge which 'acpi' or 'pcie' should be used. That is, if duplicated physical slot numbers are detected, 'acpi' mode is used. This method is not perfect, but it's realistic. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: pciehp: add ACPI based slot detectionKenji Kaneshige2009-01-074-1/+132
| | | | | | | | | | | | | | | | | | | | | There is a problem that some non hot-pluggable PCIe slots are detected as hot-pluggable by pciehp on some platforms. The immediate cause of this problem is that hot-plug capable bit in the Slot Capabilities register is set even for non hot-pluggable slots on those platforms. It seems a BIOS/hardware problem, but we need workaround about that. Some of those platforms define hot-pluggable PCIe slots on ACPI namespace properly, while hot-plug capable bit in the Slot Capabilities register is set improperly. So using ACPI namespace information in pciehp to detect PCIe hot-pluggable slots would be a workaround. This patch adds 'pciehp_detect_mode' module option. When 'acpi' is specified, pciehp uses ACPI namespace information to detect PCIe hot-pluggable slots. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: work_on_cpu: use in drivers/pci/pci-driver.cRusty Russell2009-01-071-20/+32
| | | | | | | | | | | | | | | | This uses work_on_cpu(), rather than altering the cpumask of the thread which we happen to be. Note the cleanups: 1) I've removed the CONFIG_NUMA test, since dev_to_node() returns -1 for !CONFIG_NUMA anyway and the compiler will eliminate it. 2) No need to reset mempolicy to default (a bad idea anyway) since work_on_cpu is run from a workqueue. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI PM: Split PCI Express port suspend-resumeRafael J. Wysocki2009-01-071-6/+17
| | | | | | | | | | | | Suspend-resume of PCI Express ports has recently been moved into _suspend_late() and _resume_early() callbacks, but some functions executed from there should not be called with interrupts disabled, eg. pci_enable_device(). For this reason, split the suspend-resume of PCI Express ports into parts to be executed with interrupts disabled and with interrupts enabled. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI PM: Fix pci_update_current_stateRafael J. Wysocki2009-01-071-3/+6
| | | | | | | | | | | | Currently, PCI devices without the PM capability that are power manageable by the platform (eg. ACPI) are not handled correctly by pci_set_power_state(), because their current_state field is not updated to reflect the new power state of the device. Fix this by making pci_update_current_state() accept additional argument representing the power state of the device as set by the platform. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: set device wakeup capable flag if platform support is presentJesse Barnes2009-01-073-0/+22
| | | | | | | | | | | | | When PCI devices are initialized, we check whether they support PCI PM caps and set the device can_wakeup flag if so. However, some devices may have platform provided wakeup events rather than PCI PME signals, so we need to set can_wakeup in that case too. Doing so should allow wakeups from many more devices, especially on cost constrained systems. Reported-by: Alan Stern <stern@rowland.harvard.edu> Tested-by: Joseph Chan <JosephChan@via.com.tw> Acked-by: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: factor pci_bus_add_child() from pci_bus_add_devices()Yu Zhao2009-01-072-23/+34
| | | | | | | | | This patch splits a new function, pci_bus_add_child(), from pci_bus_add_devices(). The new function can be used to register PCI buses to the device core. Signed-off-by: Yu Zhao <yu.zhao@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: cleanup pci_bus_add_devices()Yu Zhao2009-01-071-27/+28
| | | | | | | | | Cleanup pci_bus_add_devices() by negating the conditional and continuing, rather than having a single conditional take up the whole body. Signed-off-by: Yu Zhao <yu.zhao@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: add a new function to map BAR offsetsYu Zhao2009-01-073-8/+29
| | | | | | | | Add a function to map a given resource number to a corresponding register so drivers can get the offset and type of device specific BARs. Signed-off-by: Yu Zhao <yu.zhao@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: allow pci_alloc_child_bus() to handle a NULL bridgeYu Zhao2009-01-071-2/+6
| | | | | | | | | Allow pci_alloc_child_bus() to allocate buses without bridge devices. Some SR-IOV devices can occupy more than one bus number, but there is no explicit bridges because that have internal routing mechanism. Signed-off-by: Yu Zhao <yu.zhao@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: export __pci_read_base()Yu Zhao2009-01-072-11/+18
| | | | | | | Export __pci_read_base() so it can be used by whole PCI subsystem. Signed-off-by: Yu Zhao <yu.zhao@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: remove unnecessary condition check in pci_restore_bars()Yu Zhao2009-01-071-17/+2
| | | | | | | | Remove the unnecessary number of resources condition checks because the pci_update_resource() will check availability of the resources. Signed-off-by: Yu Zhao <yu.zhao@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: define PCI resource names in an 'enum'Yu Zhao2009-01-074-18/+32
| | | | | | | | | | This patch moves all definitions of the PCI resource names to an 'enum', and also replaces some hard-coded resource variables with symbol names. This change eases introduction of device specific resources. Reviewed-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Yu Zhao <yu.zhao@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: remove unnecessary arg of pci_update_resource()Yu Zhao2009-01-073-6/+7
| | | | | | | | | This cleanup removes unnecessary argument 'struct resource *res' in pci_update_resource(), so it takes same arguments as other companion functions (pci_assign_resource(), etc.). Signed-off-by: Yu Zhao <yu.zhao@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: enhance pci_ari_enabled()Yu Zhao2009-01-071-3/+3
| | | | | | | | | | | Change parameter of pci_ari_enabled() from 'pci_dev' to 'pci_bus'. ARI forwarding on the bridge mostly concerns the subordinate devices rather than the bridge itself. So this change will make the function easier to use. Signed-off-by: Yu Zhao <yu.zhao@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI quirks: piix3: warn softer about enabling passive releaseAdam Jackson2009-01-071-1/+1
| | | | | | | | | | | | All the other quirks are dev_info() not dev_err(), this one isn't special. This makes 'quiet' boot in qemu really quiet. Signed-off-by: Adam Jackson <ajax@redhat.com> Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Cc: Jeff Garzik <jeff@garzik.org> Cc: Tejun Heo <htejun@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: Make settable sysfs attributes more consistentTrent Piepho2009-01-071-20/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | PCI devices have three settable boolean attributes, enable, broken_parity_status, and msi_bus. The store functions for these would silently interpret "0x01" as false, "1llogical" as true, and "true" would be (silently!) ignored and do nothing. This is inconsistent with typical sysfs handling of settable attributes, and just plain doesn't make much sense. So, use strict_strtoul(), which was created for this purpose. The store functions will treat a value of 0 as false, non-zero as true, and return -EINVAL for a parse failure. Additionally, is_enabled_store() and msi_bus_store() return -EPERM if CAP_SYS_ADMIN is lacking, rather than silently doing nothing. This is more typical behavior for sysfs attributes that need a capability. And msi_bus_store() will only print the "forced subordinate bus ..." warning if the MSI flag was actually forced to a different value. Signed-off-by: Trent Piepho <xyzzy@speakeasy.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: uninline pci_ioremap_bar()Andrew Morton2009-01-072-14/+17
| | | | | | | | It's too large to be inlined. Acked-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: fix incorrect error return in pci_enable_wakeAlan Stern2009-01-071-1/+1
| | | | | | | | | | This patch (as1186) fixes a minor mistake in pci_enable_wake(). When the routine is asked to disable remote wakeup, it should not return an error merely because the device is not allowed to do wakeups! Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: parisc: use generic pci_swizzle_interrupt_pin()Bjorn Helgaas2009-01-072-4/+3
| | | | | | | | Use the generic pci_swizzle_interrupt_pin() instead of arch-specific code. Acked-by: Kyle McMartin <kyle@infradead.org> Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: mips: use generic pci_swizzle_interrupt_pin()Bjorn Helgaas2009-01-072-14/+1
| | | | | | | | Use the generic pci_swizzle_interrupt_pin() instead of arch-specific code. Acked-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: x86: use generic pci_swizzle_interrupt_pin()Bjorn Helgaas2009-01-072-8/+3
| | | | | | | | | | Use the generic pci_swizzle_interrupt_pin() instead of arch-specific code. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: hpa@zytor.com Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: alpha: use generic pci_swizzle_interrupt_pin()Bjorn Helgaas2009-01-078-14/+9
| | | | | | | | Use the generic pci_swizzle_interrupt_pin() instead of arch-specific code. Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: powerpc: use generic pci_swizzle_interrupt_pin()Bjorn Helgaas2009-01-071-6/+1
| | | | | | | | Use the generic pci_swizzle_interrupt_pin() instead of arch-specific code. Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: sh: use generic pci_swizzle_interrupt_pin()Bjorn Helgaas2009-01-072-13/+3
| | | | | | | | Use the generic pci_swizzle_interrupt_pin() instead of arch-specific code. Acked-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: arm: use generic pci_swizzle_interrupt_pin()Bjorn Helgaas2009-01-072-12/+5
| | | | | | | | Use the generic pci_swizzle_interrupt_pin() instead of arch-specific code. Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: add pci_swizzle_interrupt_pin()Bjorn Helgaas2009-01-072-1/+16
| | | | | | | | | | | | | This patch adds pci_swizzle_interrupt_pin(), which implements the INTx swizzling algorithm specified in Table 9-1 of the "PCI-to-PCI Bridge Architecture Specification," revision 1.2. There are many architecture-specific implementations of this swizzle that can be replaced by this common one. Reviewed-by: David Howells <dhowells@redhat.com> Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* x86/PCI: minor logic simplicationsBjorn Helgaas2009-01-071-4/+4
| | | | | | | | | | Test "pin" immediately to simplify the subsequent code. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: hpa@zytor.com Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* x86/PCI: use config space encoding for interrupt pinsBjorn Helgaas2009-01-071-24/+20
| | | | | | | | | | | | | Keep "pin" encoded as it is in the "Interrupt Pin" value in PCI config space, i.e., 0=device doesn't use interrupts, 1=INTA, ..., 4=INTD. This makes the bridge INTx swizzle match other architectures. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: hpa@zytor.com Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: use config space encoding in pci_get_interrupt_pin()Bjorn Helgaas2009-01-072-3/+3
| | | | | | | | | | | | | | | This patch makes pci_get_interrupt_pin() return values encoded the same way as the "Interrupt Pin" value in PCI config space, i.e., 1=INTA, ..., 4=INTD. pirq_bios_set() is the only in-tree caller of pci_get_interrupt_pin() and pci_get_interrupt_pin() is not exported. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: hpa@zytor.com Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI hotplug: cpqphp: use config space PCI interrupt pin encodingBjorn Helgaas2009-01-072-3/+3
| | | | | | | | | | | | This patch changes cpqphp to use interrupt pin values just as they come from PCI config space, i.e., 1=INTA, ..., 4=INTD. pcibios_set_irq_routing() takes pin arguments in the range 0=INTA, ..., 3=INTD, so we'll adjust the pin just before calling it. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Acked-by: Alex Chiang <achiang@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: avoid early PCI mmconfig init if pci=noearly is given in cmdlineJacob Pan2009-01-071-1/+2
| | | | | | | | | | Early type 1 accesses can cause problems on some platforms, and pci=noearly is supposed to prevent them from occurring. However, early mcfg probing code uses type 1 and isn't protected by a check for noearly. This patch fixes that problem. Signed-off-by: Jacob Pan <jacob.jun.pan@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: pcie port driver: remove extra printksBjorn Helgaas2009-01-071-4/+0
| | | | | | | | | | These printks don't contain enough information to be useful. I think it would be more useful to have a message when a service driver binds to a root port. That could contain the service type, the interrupt mode and IRQ, etc. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* x86/PCI: make PCI bus locality messages more meaningfulBjorn Helgaas2009-01-071-4/+5
| | | | | | | | | | | | | Change PCI bus locality messages so they have a bit more context and look like the rest of PCI, e.g., - bus 01 -> node 0 - bus 04 -> node 0 + pci 0000:01: bus on NUMA node 0 + pci 0000:04: bus on NUMA node 0 Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: make PCI bus resource messages more meaningfulBjorn Helgaas2009-01-071-3/+3
| | | | | | | | | | | | | | | Change PCI bus resource messages so they have a bit more context and look like the rest of PCI, e.g., - bus: 00 index 0 io port: [0x00-0xffff] - bus: 00 index 1 mmio: [0x000000-0xffffffff] + pci 0000:00: bus resource 0 io : [0x00-0xffff] + pci 0000:00: bus resource 1 mem: [0x000000-0xffffffff] This also changes them from KERN_INFO to KERN_DEBUG. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI hotplug: acpiphp whitespace cleanupAlex Chiang2009-01-072-4/+4
| | | | | | | | | | Clean up whitespace. Setting 'let c_space_errors=1' in .vimrc shows all sorts of ugliness. ;) Signed-off-by: Alex Chiang <achiang@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: Don't carp about BAR allocation failures in quiet bootIngo Molnar2009-01-072-4/+4
| | | | | | | | | These are easy to trigger (more or less harmlessly) with multiple video cards, since the ROM BAR will typically not be given any space by the BIOS bridge setup. No reason to punish quiet boot for this. Signed-off-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI hotplug: aerdrv: fix a typo in error messageHidetoshi Seto2009-01-071-1/+1
| | | | | | | "TLP" is an acronym for "Transaction Layer Packet." Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: handle PCI state saving with interrupts disabledRafael J. Wysocki2009-01-073-22/+55
| | | | | | | | | | Since interrupts will soon be disabled at PCI resume time, we need to pre-allocate memory to save/restore PCI config space (or use GFP_ATOMIC, but this is safer). Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: extend on the ICH motherboard IO decode quirk listLinus Torvalds2009-01-071-15/+90
| | | | | | | | | | | | | | | | | | | | | This adds more LPC controller IO range decode quirks for the Intel ICH family of chipsets. They differ a bit between the older ICH6 chipset and the more modern layout of the ICH7-ICH10 chipsets. This patch just prints out the IO decode information found by the quirks, but eventually we may want to add them to the resource tree, in order to know to avoid allocating things over them. That's especially true if it turns out that any firmware ends up putting the magic motherboard resources in an address range that we use for dynamic allocations (ie above PCIBIOS_MIN_IO, which is 0x1000 on x86). Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Rafael J. Wysocki <rjw@sisk.pl> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Greg KH <greg@kroah.com> Cc: Frans Pop <elendil@planet.nl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: Suspend and resume PCI Express ports with interrupts disabledRafael J. Wysocki2009-01-071-6/+6
| | | | | | | | | | | | | | | I don't see why the suspend and resume of PCI Express ports should be handled with interrupts enabled and it may even lead to problems in some situations. For this reason, move the suspending and resuming of PCI Express ports into ->suspend_late() and ->resume_early() callbacks executed with interrupts disabled. This patch addresses the regression from 2.6.26 tracked as http://bugzilla.kernel.org/show_bug.cgi?id=12121 . Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: pci-stub module to reserve pci deviceChris Wright2009-01-073-0/+58
| | | | | | | | | | | | | | | | | | | | When doing device assignment with KVM there's currently nothing to protect the device from having a driver in the host as well as the guest. This trivial module just binds the pci device on the host to a stub driver so that a real host driver can't bind to the device. It has no pci id table, it supports only dynamic ids. # echo "8086 10f5" > /sys/bus/pci/drivers/pci-stub/new_id # echo -n 0000:00:19.0 > /sys/bus/pci/drivers/e1000e/unbind # echo -n 0000:00:19.0 > /sys/bus/pci/drivers/pci-stub/bind # ls -l /sys/bus/pci/devices/0000:00:19.0/driver lrwxrwxrwx 1 root root 0 2008-11-25 19:10 /sys/bus/pci/devices/0000:00:19.0/driver -> ../../../bus/pci/drivers/pci-stub Cc: "Kay, Allen M" <allen.m.kay@intel.com> Cc: "Nakajima, Jun" <jun.nakajima@intel.com> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: allow pci driver to support only dynidsChris Wright2009-01-071-9/+11
| | | | | | | | | | | | commit b41d6cf38e27 (PCI: Check dynids driver_data value for validity) requires all drivers to include an id table to try and match driver_data. Before validating driver_data check driver has an id table. Acked-by: Jean Delvare <khali@linux-fr.org> Cc: Milton Miller <miltonm@bga.com> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI/ACPI: acpiphp: Identify more removable slotsMatthew Garrett2009-01-071-15/+17
| | | | | | | | | | | | | According to section 6.3.6 of the ACPI spec, the presence of an _RMV method that evaluates to 1 is sufficient to indicate that a slot is removable without needing an eject method. This patch refactors the ejectable slot detection code a little in order to flag these slots as ejectable and register them. Acpihp then binds to the expresscard slot on my HP test machine. Acked-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* pci-acpi: Cleanup _OSC evaluation codeTaku Izumi2009-01-071-17/+14
| | | | | | | | | | | Cleanup _OSC evaluation code. Some whitespace changes and a few other minor cleanups. Reviewed-by: Andrew Patterson <andrew.patterson@hp.com> Tested-by: Andrew Patterson <andrew.patterson@hp.com> 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>
* PCI/ACPI: Remove unnecessary _OSC evaluation for control requestTaku Izumi2009-01-071-0/+4
| | | | | | | | | | | | If a control had already been granted, we don't need to re-evaluate _OSC for it because firmware may not reject control of any feature it has previously granted control to. Reviewed-by: Andrew Patterson <andrew.patterson@hp.com> Tested-by: Andrew Patterson <andrew.patterson@hp.com> 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>
* PCI: revert additional _OSC evaluationTaku Izumi2009-01-071-13/+17
| | | | | | | | | | | | | | | | | Reverts adf411b819adc9fa96e9b3e638c7480d5e71d270. The commit adf411b819adc9fa96e9b3e638c7480d5e71d270 was based on the improper assumption that queried result was not updated when _OSC support field was changed. But, in fact, queried result is updated whenever _OSC support field was changed through __acpi_query_osc(). As a result, the commit adf411b819adc9fa96e9b3e638c7480d5e71d270 only introduced unnecessary additional _OSC evaluation... Tested-by: Andrew Patterson <andrew.patterson@hp.com> Reviewed-by: Andrew Patterson <andrew.patterson@hp.com> 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>
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