- 07 Jan, 2009 40 commits
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Yu Zhao authored
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>
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Adam Jackson authored
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:
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Trent Piepho authored
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:
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Andrew Morton authored
It's too large to be inlined. Acked-by:
Arjan van de Ven <arjan@linux.intel.com> Signed-off-by:
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Alan Stern authored
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:
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Bjorn Helgaas authored
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:
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Bjorn Helgaas authored
Use the generic pci_swizzle_interrupt_pin() instead of arch-specific code. Acked-by:
Ralf Baechle <ralf@linux-mips.org> Signed-off-by:
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Bjorn Helgaas authored
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:
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Bjorn Helgaas authored
Use the generic pci_swizzle_interrupt_pin() instead of arch-specific code. Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Signed-off-by:
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Bjorn Helgaas authored
Use the generic pci_swizzle_interrupt_pin() instead of arch-specific code. Acked-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by:
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Bjorn Helgaas authored
Use the generic pci_swizzle_interrupt_pin() instead of arch-specific code. Acked-by:
Paul Mundt <lethal@linux-sh.org> Signed-off-by:
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Bjorn Helgaas authored
Use the generic pci_swizzle_interrupt_pin() instead of arch-specific code. Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by:
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Bjorn Helgaas authored
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:
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Bjorn Helgaas authored
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:
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Bjorn Helgaas authored
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:
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Bjorn Helgaas authored
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:
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Bjorn Helgaas authored
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:
Alex Chiang <achiang@hp.com> Signed-off-by:
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Jacob Pan authored
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:
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Bjorn Helgaas authored
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:
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Bjorn Helgaas authored
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 authored
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: -
Alex Chiang authored
Clean up whitespace. Setting 'let c_space_errors=1' in .vimrc shows all sorts of ugliness. ;) Signed-off-by:
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Ingo Molnar authored
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:
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Hidetoshi Seto authored
"TLP" is an acronym for "Transaction Layer Packet." Signed-off-by:
Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by:
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Rafael J. Wysocki authored
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:
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Linus Torvalds authored
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:
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Rafael J. Wysocki authored
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:
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Chris Wright authored
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:
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Chris Wright authored
commit b41d6cf3 (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:
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Matthew Garrett authored
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:
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Taku Izumi authored
Cleanup _OSC evaluation code. Some whitespace changes and a few other minor cleanups. Reviewed-by:
Andrew Patterson <andrew.patterson@hp.com> Tested-by:
Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by:
Taku Izumi <izumi.taku@jp.fujitsu.com> Signed-off-by:
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Taku Izumi authored
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:
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Taku Izumi authored
Reverts adf411b8. The commit adf411b8 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 adf411b8 only introduced unnecessary additional _OSC evaluation... Tested-by:
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Julia Lawall authored
pci_get_slot does a pci_dev_get, so pci_dev_put needs to be called in an error case. An alterative would be to move the test_and_set_bit before the call to pci_get_slot. The problem was fixed using the following semantic patch. (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ local idexpression *n; statement S1,S2; expression E,E1; expression *ptr != NULL; type T,T1; @@ ( if (!(n = pci_get_slot(...))) S1 | n = pci_get_slot(...) ) <... when != pci_dev_put(n) when != if (...) { <+... pci_dev_put(n) ...+> } when != true !n || ... when != n = (T)E when != E = n if (!n || ...) S2 ...> ( return \(0\|<+...n...+>\|ptr\); | + pci_dev_put(n); return ...; | pci_dev_put(n); | n = (T1)E1 | E1 = n ) // </smpl> Signed-off-by:
Julia Lawall <julia@diku.dk> Signed-off-by:
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Arjan van de Ven authored
Device drivers that use pci_request_regions() (and similar APIs) have a reasonable expectation that they are the only ones accessing their device. As part of the e1000e hunt, we were afraid that some userland (X or some bootsplash stuff) was mapping the MMIO region that the driver thought it had exclusively via /dev/mem or via various sysfs resource mappings. This patch adds the option for device drivers to cause their reserved regions to the "banned from /dev/mem use" list, so now both kernel memory and device-exclusive MMIO regions are banned. NOTE: This is only active when CONFIG_STRICT_DEVMEM is set. In addition to the config option, a kernel parameter iomem=relaxed is provided for the cases where developers want to diagnose, in the field, drivers issues from userspace. Reviewed-by:
Matthew Wilcox <willy@linux.intel.com> Signed-off-by:
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Andrew Patterson authored
The acpi_query_osc, __pci_osc_support_set, pci_osc_support_set, and pcie_osc_support_set functions have been obsoleted in favor of setting these capabilities during root bridge discovery with pci_acpi_osc_support. There are no longer any callers of these functions, so remove them. Signed-off-by:
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Andrew Patterson authored
The _OSC capability OSC_MSI_SUPPORT is set when the root bridge is added with pci_acpi_osc_support(), so we no longer need to do it in the PCI MSI driver. Also adds the function pci_msi_enabled, which returns true if pci=nomsi is not on the kernel command-line. Signed-off-by:
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Andrew Patterson authored
The _OSC capability OSC_EXT_PCI_CONFIG_SUPPORT is set when the root bridge is added with pci_acpi_osc_support(), so we no longer need to do it in the PCIe AER driver. Signed-off-by:
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Andrew Patterson authored
The _OSC capabilities OSC_ACTIVE_STATE_PWR_SUPPORT and OSC_CLOCK_PWR_CAPABILITY_SUPPORT are set when the root bridge is added with pci_acpi_osc_support(), so we no longer need to do it in the ASPM driver. Also add the function pcie_aspm_enabled, which returns true if pcie_aspm=off is not on the kernel command-line. Signed-off-by:
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Andrew Patterson authored
The _OSC capability OSC_EXT_PCI_CONFIG_SUPPORT is set when the root bridge is added with pci_acpi_osc_support() if we can access PCI extended config space. This adds the function pci_ext_cfg_avail which returns true if we can access PCI extended config space (offset greater than 0xff). It currently only returns false if arch=x86 and raw_pci_ext_ops is not set (which might happen if pci=nommcfg is set on the kernel command-line). Signed-off-by:
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