drivers/pci/Kconfig

   1 #
   2 # PCI configuration
   3 #
   4 config ARCH_SUPPORTS_MSI
   5         bool
   6         default n
   7
   8 config PCI_MSI
   9         bool "Message Signaled Interrupts (MSI and MSI-X)"
  10         depends on PCI
  11         depends on ARCH_SUPPORTS_MSI
  12         help
  13            This allows device drivers to enable MSI (Message Signaled
  14            Interrupts).  Message Signaled Interrupts enable a device to
  15            generate an interrupt using an inbound Memory Write on its
  16            PCI bus instead of asserting a device IRQ pin.
  17
  18            Use of PCI MSI interrupts can be disabled at kernel boot time
  19            by using the 'pci=nomsi' option.  This disables MSI for the
  20            entire system.
  21
  22            If you don't know what to do here, say Y.
  23
  24 config PCI_DEBUG
  25         bool "PCI Debugging"
  26         depends on PCI && DEBUG_KERNEL
  27         help
  28           Say Y here if you want the PCI core to produce a bunch of debug
  29           messages to the system log.  Select this if you are having a
  30           problem with PCI support and want to see more of what is going on.
  31
  32           When in doubt, say N.
  33
  34 config PCI_STUB
  35         tristate "PCI Stub driver"
  36         depends on PCI
  37         help
  38           Say Y or M here if you want be able to reserve a PCI device
  39           when it is going to be assigned to a guest operating system.
  40
  41           When in doubt, say N.
  42
  43 config XEN_PCIDEV_FRONTEND
  44         tristate "Xen PCI Frontend"
  45         depends on PCI && X86 && XEN
  46         select HOTPLUG
  47         select PCI_XEN
  48         select XEN_XENBUS_FRONTEND
  49         default y
  50         help
  51           The PCI device frontend driver allows the kernel to import arbitrary
  52           PCI devices from a PCI backend to support PCI driver domains.
  53
  54 config HT_IRQ
  55         bool "Interrupts on hypertransport devices"
  56         default y
  57         depends on PCI && X86_LOCAL_APIC && X86_IO_APIC
  58         help
  59            This allows native hypertransport devices to use interrupts.
  60
  61            If unsure say Y.
  62
  63 config PCI_ATS
  64         bool
  65
  66 config PCI_IOV
  67         bool "PCI IOV support"
  68         depends on PCI
  69         select PCI_ATS
  70         help
  71           I/O Virtualization is a PCI feature supported by some devices
  72           which allows them to create virtual devices which share their
  73           physical resources.
  74
  75           If unsure, say N.
  76
  77 config PCI_PRI
  78         bool "PCI PRI support"
  79         select PCI_ATS
  80         help
  81           PRI is the PCI Page Request Interface. It allows PCI devices that are
  82           behind an IOMMU to recover from page faults.
  83
  84           If unsure, say N.
  85
  86 config PCI_PASID
  87         bool "PCI PASID support"
  88         depends on PCI
  89         select PCI_ATS
  90         help
  91           Process Address Space Identifiers (PASIDs) can be used by PCI devices
  92           to access more than one IO address space at the same time. To make
  93           use of this feature an IOMMU is required which also supports PASIDs.
  94           Select this option if you have such an IOMMU and want to compile the
  95           driver for it into your kernel.
  96
  97           If unsure, say N.
  98
  99 config PCI_IOAPIC
 100         bool
 101         depends on PCI
 102         depends on ACPI
 103         depends on HOTPLUG
 104         default y
 105
 106 config PCI_LABEL
 107         def_bool y if (DMI || ACPI)
 108         select NLS