linux-imx

​

menuconfig PCI

    bool "PCI support"

    depends on HAVE_PCI

    help

      This option enables support for the PCI local bus, including

      support for PCI-X and the foundations for PCI Express support.

      Say 'Y' here unless you know what you are doing.

​

config PCI_DOMAINS

    bool

    depends on PCI

​

config PCI_DOMAINS_GENERIC

    bool

    select PCI_DOMAINS

​

config PCI_SYSCALL

    bool

​

source "drivers/pci/pcie/Kconfig"

​

config PCI_MSI

    bool "Message Signaled Interrupts (MSI and MSI-X)"

    select GENERIC_MSI_IRQ

    help

       This allows device drivers to enable MSI (Message Signaled

       Interrupts).  Message Signaled Interrupts enable a device to

       generate an interrupt using an inbound Memory Write on its

       PCI bus instead of asserting a device IRQ pin.

​

       Use of PCI MSI interrupts can be disabled at kernel boot time

       by using the 'pci=nomsi' option.  This disables MSI for the

       entire system.

​

config PCI_MSI_IRQ_DOMAIN

    def_bool ARC || ARM || ARM64 || X86

    depends on PCI_MSI

    select GENERIC_MSI_IRQ_DOMAIN

​

config PCI_QUIRKS

    default y

    bool "Enable PCI quirk workarounds" if EXPERT

    help

      This enables workarounds for various PCI chipset bugs/quirks.

      Disable this only if your target machine is unaffected by PCI

      quirks.

​

config PCI_DEBUG

    bool "PCI Debugging"

    help

      Say Y here if you want the PCI core to produce a bunch of debug

      messages to the system log.  Select this if you are having a

      problem with PCI support and want to see more of what is going on.

​

      When in doubt, say N.

​

config PCI_REALLOC_ENABLE_AUTO

    bool "Enable PCI resource re-allocation detection"

    depends on PCI_IOV

    help

      Say Y here if you want the PCI core to detect if PCI resource

      re-allocation needs to be enabled. You can always use pci=realloc=on

      or pci=realloc=off to override it.  It will automatically

      re-allocate PCI resources if SR-IOV BARs have not been allocated by

      the BIOS.

​

      When in doubt, say N.

​

config PCI_STUB

    tristate "PCI Stub driver"

    help

      Say Y or M here if you want be able to reserve a PCI device

      when it is going to be assigned to a guest operating system.

​

      When in doubt, say N.

​

config PCI_PF_STUB

    tristate "PCI PF Stub driver"

    depends on PCI_IOV

    help

      Say Y or M here if you want to enable support for devices that

      require SR-IOV support, while at the same time the PF (Physical

      Function) itself is not providing any actual services on the

      host itself such as storage or networking.

​

      When in doubt, say N.

​

config XEN_PCIDEV_FRONTEND

        tristate "Xen PCI Frontend"

        select PCI_XEN

    select XEN_XENBUS_FRONTEND

        default y

        help

          The PCI device frontend driver allows the kernel to import arbitrary

          PCI devices from a PCI backend to support PCI driver domains.

​

config PCI_ATS

    bool

​

​

config PCI_LOCKLESS_CONFIG

    bool

​

config PCI_BRIDGE_EMUL

    bool

​

config PCI_IOV

    bool "PCI IOV support"

    select PCI_ATS

    help

      I/O Virtualization is a PCI feature supported by some devices

      which allows them to create virtual devices which share their

      physical resources.

​

      If unsure, say N.

​

config PCI_PRI

    bool "PCI PRI support"

    select PCI_ATS

    help

      PRI is the PCI Page Request Interface. It allows PCI devices that are

      behind an IOMMU to recover from page faults.

​

      If unsure, say N.

​

config PCI_PASID

    bool "PCI PASID support"

    select PCI_ATS

    help

      Process Address Space Identifiers (PASIDs) can be used by PCI devices

      to access more than one IO address space at the same time. To make

      use of this feature an IOMMU is required which also supports PASIDs.

      Select this option if you have such an IOMMU and want to compile the

      driver for it into your kernel.

​

      If unsure, say N.

​

config PCI_P2PDMA

    bool "PCI peer-to-peer transfer support"

    select GENERIC_ALLOCATOR

    help

      Enableѕ drivers to do PCI peer-to-peer transactions to and from

      BARs that are exposed in other devices that are the part of

      the hierarchy where peer-to-peer DMA is guaranteed by the PCI

      specification to work (ie. anything below a single PCI bridge).

​

      Many PCIe root complexes do not support P2P transactions and

      it's hard to tell which support it at all, so at this time,

      P2P DMA transations must be between devices behind the same root

      port.

​

      If unsure, say N.

​

config PCI_LABEL

    def_bool y if (DMI || ACPI)

    select NLS

​

config PCI_HYPERV

        tristate "Hyper-V PCI Frontend"

        help

          The PCI device frontend driver allows the kernel to import arbitrary

          PCI devices from a PCI backend to support PCI driver domains.

​

source "drivers/pci/hotplug/Kconfig"

source "drivers/pci/controller/Kconfig"

source "drivers/pci/endpoint/Kconfig"

source "drivers/pci/switch/Kconfig"