- 07 Jan, 2009 40 commits
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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:
Adam Jackson <ajax@redhat.com> Signed-off-by:
Jesse Barnes <jbarnes@virtuousgeek.org>
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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:
"Rafael J. Wysocki" <rjw@sisk.pl> 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:
Arjan van de Ven <arjan@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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Andrew Patterson authored
Add pci_acpi_osc_support() and call it when a PCI bridge is added. This allows us to avoid having every individual PCI root bridge driver call _OSC support for every root bridge in their probe functions, a significant savings in boot time. Signed-off-by:
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Andrew Patterson authored
The pci-acpi.h file will not compile without including linux/acpi.h. Signed-off-by:
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Benjamin Herrenschmidt authored
Currently, only PHBs get the legacy_* files, which makes it tricky for userland to get access to the legacy space. This commit exposes them in every bus, since even child buses may forward legacy cycles if configured properly. Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by:
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Sheng Yang authored
Some PCI devices implement PCI Advanced Features, which means they support Function Level Reset(FLR). Implement support for that in pci_reset_function. Signed-off-by:
Sheng Yang <sheng@linux.intel.com> Signed-off-by:
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Sheng Yang authored
PCI Advanced Features Capability is introduced by "Conventional PCI Advanced Caps ECN" (can be downloaded in pcisig.com). Add defines for the various AF capabilities, including function level reset (FLR). Reviewed-by:
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Sheng Yang authored
Separate out function level reset so that pci_reset_function can be more easily extended. Signed-off-by:
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Kay Sievers authored
This patch is part of a larger patch series which will remove the "char bus_id[20]" name string from struct device. The device name is managed in the kobject anyway, and without any size limitation, and just needlessly copied into "struct device". To set and read the device name dev_name(dev) and dev_set_name(dev) must be used. If your code uses static kobjects, which it shouldn't do, "const char *init_name" can be used to statically provide the name the registered device should have. At registration time, the init_name field is cleared, to enforce the use of dev_name(dev) to access the device name at a later time. We need to get rid of all occurrences of bus_id in the entire tree to be able to enable the new interface. Please apply this patch, and possibly convert any remaining remaining occurrences of bus_id. Acked-by:
Kay Sievers <kay.sievers@vrfy.org> Signed-off-by:
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Jesse Barnes authored
Had a space before tab in do_fixups, prototype wasn't wrapped properly either. Signed-off-by: -
Kenji Kaneshige authored
The pciehp driver waits for 1000 msec after turning power off to make sure the power has been completely removed. But this 1000 msec wait is not needed if a slot doesn't implement power control because software cannot control the power. Power will be automatically removed at adapter removal time on such a slot Tested-by:
"Phil Endecott" <phil_pibbu_endecott@chezphil.org> Signed-off-by:
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Jesse Barnes authored
/proc/bus/pci allows you to mmap resource ranges too, so we should probably be checking to make sure the mapping is somewhat valid. Uses the same code as the recent sysfs mmap range checking patch from Linus. Acked-by:
David Miller <davem@davemloft.net> Signed-off-by:
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Linus Torvalds authored
The __SWAB_64_THRU_32__ case of a 64-bit byte swap was depending on the no-longer-existant ___swab32() method (three underscores). We got rid of some of the worst indirection and complexity, and now it should just use the 32-bit swab function that was defined right above it. Reported-and-tested-by:
Nicolas Pitre <nico@cam.org> Reported-by:
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Harvey Harrison authored
This implementation caused problems in userspace which can, and does define _both_ __LITTLE_ENDIAN and __BIG_ENDIAN. Signed-off-by:
Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by:
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Harvey Harrison authored
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Harvey Harrison authored
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Harvey Harrison authored
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Harvey Harrison authored
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Harvey Harrison authored
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Harvey Harrison authored
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Harvey Harrison authored
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Harvey Harrison authored
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Harvey Harrison authored
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Harvey Harrison authored
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