user/sven/linux.git/include/linux/pci.h, branch tmp/leds/core

PCI PM: Restore standard config registers of all devices early

2009-01-16T20:57:58Z

There is a problem in our handling of suspend-resume of PCI devices that many of them have their standard config registers restored with interrupts enabled and they are put into the full power state with interrupts enabled as well. This may lead to the following scenario: * an interrupt vector is shared between two or more devices * one device is resumed earlier and generates an interrupt * the interrupt handler of another device tries to handle it and attempts to access the device the config space of which hasn't been restored yet and/or which still is in a low power state * the system crashes as a result To prevent this from happening we should restore the standard configuration registers of all devices with interrupts disabled and we should put them into the D0 power state right after that. Unfortunately, this cannot be done using the existing pci_set_power_state(), because it can sleep. Also, to do it we have to make sure that the config spaces of all devices were actually saved during suspend. Signed-off-by: Rafael J. Wysocki Acked-by: Linus Torvalds Signed-off-by: Jesse Barnes

x86/PCI: Do not use interrupt links for devices using MSI-X

2009-01-07T19:13:25Z

pcibios_enable_device() and pcibios_disable_device() don't handle IRQs for devices that have MSI enabled and it should treat the devices with MSI-X enabled in the same way. Signed-off-by: Rafael J. Wysocki Acked-by: Ingo Molnar Signed-off-by: Jesse Barnes

PCI: Add pci_clear_master() as opposite of pci_set_master()

2009-01-07T19:13:23Z

During an online device reset it may be useful to disable bus-mastering. pci_disable_device() does that, and far more besides, so is not suitable for an online reset. Add pci_clear_master() which does just this. Signed-off-by: Ben Hutchings Reviewed-by: Matthew Wilcox Signed-off-by: Jesse Barnes

PCI: add interface to set visible size of VPD

2009-01-07T19:13:18Z

The VPD on all devices may not be 32K. Unfortunately, there is no generic way to find the size, so this adds a simple API hook to reset it. Signed-off-by: Stephen Hemminger Signed-off-by: Jesse Barnes

PCI: revise VPD access interface

2009-01-07T19:13:17Z

Change PCI VPD API which was only used by sysfs to something usable in drivers. * move iteration over multiple words to the low level * use conventional types for arguments * add exportable wrapper Signed-off-by: Stephen Hemminger Signed-off-by: Jesse Barnes

PCI: add pci_common_swizzle() for INTx swizzling

2009-01-07T19:13:12Z

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 Signed-off-by: Jesse Barnes

PCI: define PCI resource names in an 'enum'

2009-01-07T19:13:01Z

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 Signed-off-by: Yu Zhao Signed-off-by: Jesse Barnes

PCI: remove unnecessary arg of pci_update_resource()

2009-01-07T19:13:00Z

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 Signed-off-by: Jesse Barnes

PCI: uninline pci_ioremap_bar()

2009-01-07T19:12:57Z

It's too large to be inlined. Acked-by: Arjan van de Ven Signed-off-by: Andrew Morton Signed-off-by: Jesse Barnes

PCI: add pci_swizzle_interrupt_pin()

2009-01-07T19:12:50Z

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 Signed-off-by: Bjorn Helgaas Signed-off-by: Jesse Barnes