Donald Dutile 1789382a72 PCI: SRIOV control and status via sysfs ... Provide files under sysfs to determine the maximum number of VFs an SR-IOV-capable PCIe device supports, and methods to enable and disable the VFs on a per-device basis. Currently, VF enablement by SR-IOV-capable PCIe devices is done via driver-specific module parameters. If not setup in modprobe files, it requires admin to unload & reload PF drivers with number of desired VFs to enable. Additionally, the enablement is system wide: all devices controlled by the same driver have the same number of VFs enabled. Although the latter is probably desired, there are PCI configurations setup by system BIOS that may not enable that to occur. Two files are created for the PF of PCIe devices with SR-IOV support: sriov_totalvfs Contains the maximum number of VFs the device could support as reported by the TotalVFs register in the SR-IOV extended capability. sriov_numvfs Contains the number of VFs currently enabled on this device as reported by the NumVFs register in the SR-IOV extended capability. Writing zero to this file disables all VFs. Writing a positive number to this file enables that number of VFs. These files are readable for all SR-IOV PF devices. Writes to the sriov_numvfs file are effective only if a driver that supports the sriov_configure() method is attached. Signed-off-by: Donald Dutile <ddutile@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>		2012-11-09 20:10:39 -07:00
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hotplug	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	2012-10-06 03:16:12 +09:00
pcie
access.c
ats.c
bus.c
host-bridge.c
hotplug-pci.c
hotplug.c
htirq.c
ioapic.c
iov.c
irq.c
Kconfig
Makefile
msi.c
msi.h
of.c
pci-acpi.c
pci-driver.c	Power management updates for 3.7-rc1	2012-10-02 18:32:35 -07:00
pci-label.c
pci-stub.c
pci-sysfs.c	PCI: SRIOV control and status via sysfs	2012-11-09 20:10:39 -07:00
pci.c
pci.h	PCI: Add pci_device_type to pdev's device struct	2012-11-09 20:07:31 -07:00
probe.c	PCI: Add pci_device_type to pdev's device struct	2012-11-09 20:07:31 -07:00
proc.c
quirks.c
remove.c
rom.c
search.c
setup-bus.c
setup-irq.c
setup-res.c
slot.c
syscall.c
vpd.c
xen-pcifront.c	Features:	2012-10-02 22:09:10 -07:00