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If a device has the SR-IOV capability, initialize it (set the ARI Capable Hierarchy in the lowest numbered PF if necessary; calculate the System Page Size for the VF MMIO, probe the VF Offset, Stride and BARs). A lock for the VF bus allocation is also initialized if a PF is the lowest numbered PF. Reviewed-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Yu Zhao <yu.zhao@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
72 lines
1.9 KiB
Plaintext
72 lines
1.9 KiB
Plaintext
#
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# PCI configuration
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#
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config ARCH_SUPPORTS_MSI
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bool
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default n
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config PCI_MSI
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bool "Message Signaled Interrupts (MSI and MSI-X)"
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depends on PCI
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depends on ARCH_SUPPORTS_MSI
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help
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This allows device drivers to enable MSI (Message Signaled
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Interrupts). Message Signaled Interrupts enable a device to
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generate an interrupt using an inbound Memory Write on its
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PCI bus instead of asserting a device IRQ pin.
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Use of PCI MSI interrupts can be disabled at kernel boot time
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by using the 'pci=nomsi' option. This disables MSI for the
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entire system.
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If you don't know what to do here, say N.
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config PCI_LEGACY
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bool "Enable deprecated pci_find_* API"
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depends on PCI
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default y
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help
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Say Y here if you want to include support for the deprecated
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pci_find_slot() and pci_find_device() APIs. Most drivers have
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been converted over to using the proper hotplug APIs, so this
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option serves to include/exclude only a few drivers that are
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still using this API.
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config PCI_DEBUG
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bool "PCI Debugging"
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depends on PCI && DEBUG_KERNEL
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help
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Say Y here if you want the PCI core to produce a bunch of debug
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messages to the system log. Select this if you are having a
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problem with PCI support and want to see more of what is going on.
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When in doubt, say N.
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config PCI_STUB
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tristate "PCI Stub driver"
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depends on PCI
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help
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Say Y or M here if you want be able to reserve a PCI device
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when it is going to be assigned to a guest operating system.
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When in doubt, say N.
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config HT_IRQ
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bool "Interrupts on hypertransport devices"
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default y
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depends on PCI && X86_LOCAL_APIC && X86_IO_APIC
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help
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This allows native hypertransport devices to use interrupts.
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If unsure say Y.
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config PCI_IOV
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bool "PCI IOV support"
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depends on PCI
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help
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I/O Virtualization is a PCI feature supported by some devices
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which allows them to create virtual devices which share their
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physical resources.
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If unsure, say N.
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