drivers/pci/Kconfig

   1 #
   2 # PCI configuration
   3 #
   4
   5 source "drivers/pci/pcie/Kconfig"
   6
   7 config PCI_BUS_ADDR_T_64BIT
   8         def_bool y if (ARCH_DMA_ADDR_T_64BIT || 64BIT)
   9         depends on PCI
  10
  11 config PCI_MSI
  12         bool "Message Signaled Interrupts (MSI and MSI-X)"
  13         depends on PCI
  14         select GENERIC_MSI_IRQ
  15         help
  16            This allows device drivers to enable MSI (Message Signaled
  17            Interrupts).  Message Signaled Interrupts enable a device to
  18            generate an interrupt using an inbound Memory Write on its
  19            PCI bus instead of asserting a device IRQ pin.
  20
  21            Use of PCI MSI interrupts can be disabled at kernel boot time
  22            by using the 'pci=nomsi' option.  This disables MSI for the
  23            entire system.
  24
  25            If you don't know what to do here, say Y.
  26
  27 config PCI_MSI_IRQ_DOMAIN
  28         bool
  29         depends on PCI_MSI
  30         select GENERIC_MSI_IRQ_DOMAIN
  31
  32 config PCI_DEBUG
  33         bool "PCI Debugging"
  34         depends on PCI && DEBUG_KERNEL
  35         help
  36           Say Y here if you want the PCI core to produce a bunch of debug
  37           messages to the system log.  Select this if you are having a
  38           problem with PCI support and want to see more of what is going on.
  39
  40           When in doubt, say N.
  41
  42 config PCI_REALLOC_ENABLE_AUTO
  43         bool "Enable PCI resource re-allocation detection"
  44         depends on PCI
  45         help
  46           Say Y here if you want the PCI core to detect if PCI resource
  47           re-allocation needs to be enabled. You can always use pci=realloc=on
  48           or pci=realloc=off to override it.  Note this feature is a no-op
  49           unless PCI_IOV support is also enabled; in that case it will
  50           automatically re-allocate PCI resources if SR-IOV BARs have not
  51           been allocated by the BIOS.
  52
  53           When in doubt, say N.
  54
  55 config PCI_STUB
  56         tristate "PCI Stub driver"
  57         depends on PCI
  58         help
  59           Say Y or M here if you want be able to reserve a PCI device
  60           when it is going to be assigned to a guest operating system.
  61
  62           When in doubt, say N.
  63
  64 config XEN_PCIDEV_FRONTEND
  65         tristate "Xen PCI Frontend"
  66         depends on PCI && X86 && XEN
  67         select PCI_XEN
  68         select XEN_XENBUS_FRONTEND
  69         default y
  70         help
  71           The PCI device frontend driver allows the kernel to import arbitrary
  72           PCI devices from a PCI backend to support PCI driver domains.
  73
  74 config HT_IRQ
  75         bool "Interrupts on hypertransport devices"
  76         default y
  77         depends on PCI && X86_LOCAL_APIC
  78         help
  79            This allows native hypertransport devices to use interrupts.
  80
  81            If unsure say Y.
  82
  83 config PCI_ATS
  84         bool
  85
  86 config PCI_IOV
  87         bool "PCI IOV support"
  88         depends on PCI
  89         select PCI_ATS
  90         help
  91           I/O Virtualization is a PCI feature supported by some devices
  92           which allows them to create virtual devices which share their
  93           physical resources.
  94
  95           If unsure, say N.
  96
  97 config PCI_PRI
  98         bool "PCI PRI support"
  99         depends on PCI
 100         select PCI_ATS
 101         help
 102           PRI is the PCI Page Request Interface. It allows PCI devices that are
 103           behind an IOMMU to recover from page faults.
 104
 105           If unsure, say N.
 106
 107 config PCI_PASID
 108         bool "PCI PASID support"
 109         depends on PCI
 110         select PCI_ATS
 111         help
 112           Process Address Space Identifiers (PASIDs) can be used by PCI devices
 113           to access more than one IO address space at the same time. To make
 114           use of this feature an IOMMU is required which also supports PASIDs.
 115           Select this option if you have such an IOMMU and want to compile the
 116           driver for it into your kernel.
 117
 118           If unsure, say N.
 119
 120 config PCI_LABEL
 121         def_bool y if (DMI || ACPI)
 122         select NLS
 123
 124 config PCI_HYPERV
 125         tristate "Hyper-V PCI Frontend"
 126         depends on PCI && X86 && HYPERV && PCI_MSI && PCI_MSI_IRQ_DOMAIN && X86_64
 127         help
 128           The PCI device frontend driver allows the kernel to import arbitrary
 129           PCI devices from a PCI backend to support PCI driver domains.
 130
 131 source "drivers/pci/hotplug/Kconfig"
 132 source "drivers/pci/host/Kconfig"