drivers/pci/Kconfig

   1 #
   2 # PCI configuration
   3 #
   4 config PCI_MSI
   5         bool "Message Signaled Interrupts (MSI and MSI-X)"
   6         depends on PCI
   7         help
   8            This allows device drivers to enable MSI (Message Signaled
   9            Interrupts).  Message Signaled Interrupts enable a device to
  10            generate an interrupt using an inbound Memory Write on its
  11            PCI bus instead of asserting a device IRQ pin.
  12
  13            Use of PCI MSI interrupts can be disabled at kernel boot time
  14            by using the 'pci=nomsi' option.  This disables MSI for the
  15            entire system.
  16
  17            If you don't know what to do here, say Y.
  18
  19 config PCI_DEBUG
  20         bool "PCI Debugging"
  21         depends on PCI && DEBUG_KERNEL
  22         help
  23           Say Y here if you want the PCI core to produce a bunch of debug
  24           messages to the system log.  Select this if you are having a
  25           problem with PCI support and want to see more of what is going on.
  26
  27           When in doubt, say N.
  28
  29 config PCI_REALLOC_ENABLE_AUTO
  30         bool "Enable PCI resource re-allocation detection"
  31         depends on PCI
  32         help
  33           Say Y here if you want the PCI core to detect if PCI resource
  34           re-allocation needs to be enabled. You can always use pci=realloc=on
  35           or pci=realloc=off to override it.  Note this feature is a no-op
  36           unless PCI_IOV support is also enabled; in that case it will
  37           automatically re-allocate PCI resources if SR-IOV BARs have not
  38           been allocated by the BIOS.
  39
  40           When in doubt, say N.
  41
  42 config PCI_STUB
  43         tristate "PCI Stub driver"
  44         depends on PCI
  45         help
  46           Say Y or M here if you want be able to reserve a PCI device
  47           when it is going to be assigned to a guest operating system.
  48
  49           When in doubt, say N.
  50
  51 config XEN_PCIDEV_FRONTEND
  52         tristate "Xen PCI Frontend"
  53         depends on PCI && X86 && XEN
  54         select PCI_XEN
  55         select XEN_XENBUS_FRONTEND
  56         default y
  57         help
  58           The PCI device frontend driver allows the kernel to import arbitrary
  59           PCI devices from a PCI backend to support PCI driver domains.
  60
  61 config HT_IRQ
  62         bool "Interrupts on hypertransport devices"
  63         default y
  64         depends on PCI && X86_LOCAL_APIC && X86_IO_APIC
  65         help
  66            This allows native hypertransport devices to use interrupts.
  67
  68            If unsure say Y.
  69
  70 config PCI_ATS
  71         bool
  72
  73 config PCI_IOV
  74         bool "PCI IOV support"
  75         depends on PCI
  76         select PCI_ATS
  77         help
  78           I/O Virtualization is a PCI feature supported by some devices
  79           which allows them to create virtual devices which share their
  80           physical resources.
  81
  82           If unsure, say N.
  83
  84 config PCI_PRI
  85         bool "PCI PRI support"
  86         depends on PCI
  87         select PCI_ATS
  88         help
  89           PRI is the PCI Page Request Interface. It allows PCI devices that are
  90           behind an IOMMU to recover from page faults.
  91
  92           If unsure, say N.
  93
  94 config PCI_PASID
  95         bool "PCI PASID support"
  96         depends on PCI
  97         select PCI_ATS
  98         help
  99           Process Address Space Identifiers (PASIDs) can be used by PCI devices
 100           to access more than one IO address space at the same time. To make
 101           use of this feature an IOMMU is required which also supports PASIDs.
 102           Select this option if you have such an IOMMU and want to compile the
 103           driver for it into your kernel.
 104
 105           If unsure, say N.
 106
 107 config PCI_IOAPIC
 108         tristate "PCI IO-APIC hotplug support" if X86
 109         depends on PCI
 110         depends on ACPI
 111         default !X86
 112
 113 config PCI_LABEL
 114         def_bool y if (DMI || ACPI)
 115         select NLS
 116
 117 source "drivers/pci/host/Kconfig"