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         def_bool ARC || ARM || ARM64 || X86
  29         depends on PCI_MSI
  30         select GENERIC_MSI_IRQ_DOMAIN
  31
  32 config PCI_QUIRKS
  33         default y
  34         bool "Enable PCI quirk workarounds" if EXPERT
  35         depends on PCI
  36         help
  37           This enables workarounds for various PCI chipset bugs/quirks.
  38           Disable this only if your target machine is unaffected by PCI
  39           quirks.
  40
  41 config PCI_DEBUG
  42         bool "PCI Debugging"
  43         depends on PCI && DEBUG_KERNEL
  44         help
  45           Say Y here if you want the PCI core to produce a bunch of debug
  46           messages to the system log.  Select this if you are having a
  47           problem with PCI support and want to see more of what is going on.
  48
  49           When in doubt, say N.
  50
  51 config PCI_REALLOC_ENABLE_AUTO
  52         bool "Enable PCI resource re-allocation detection"
  53         depends on PCI
  54         depends on PCI_IOV
  55         help
  56           Say Y here if you want the PCI core to detect if PCI resource
  57           re-allocation needs to be enabled. You can always use pci=realloc=on
  58           or pci=realloc=off to override it.  It will automatically
  59           re-allocate PCI resources if SR-IOV BARs have not been allocated by
  60           the BIOS.
  61
  62           When in doubt, say N.
  63
  64 config PCI_STUB
  65         tristate "PCI Stub driver"
  66         depends on PCI
  67         help
  68           Say Y or M here if you want be able to reserve a PCI device
  69           when it is going to be assigned to a guest operating system.
  70
  71           When in doubt, say N.
  72
  73 config XEN_PCIDEV_FRONTEND
  74         tristate "Xen PCI Frontend"
  75         depends on PCI && X86 && XEN
  76         select PCI_XEN
  77         select XEN_XENBUS_FRONTEND
  78         default y
  79         help
  80           The PCI device frontend driver allows the kernel to import arbitrary
  81           PCI devices from a PCI backend to support PCI driver domains.
  82
  83 config PCI_ATS
  84         bool
  85
  86 config PCI_ECAM
  87         bool
  88
  89 config PCI_LOCKLESS_CONFIG
  90         bool
  91
  92 config PCI_IOV
  93         bool "PCI IOV support"
  94         depends on PCI
  95         select PCI_ATS
  96         help
  97           I/O Virtualization is a PCI feature supported by some devices
  98           which allows them to create virtual devices which share their
  99           physical resources.
 100
 101           If unsure, say N.
 102
 103 config PCI_PRI
 104         bool "PCI PRI support"
 105         depends on PCI
 106         select PCI_ATS
 107         help
 108           PRI is the PCI Page Request Interface. It allows PCI devices that are
 109           behind an IOMMU to recover from page faults.
 110
 111           If unsure, say N.
 112
 113 config PCI_PASID
 114         bool "PCI PASID support"
 115         depends on PCI
 116         select PCI_ATS
 117         help
 118           Process Address Space Identifiers (PASIDs) can be used by PCI devices
 119           to access more than one IO address space at the same time. To make
 120           use of this feature an IOMMU is required which also supports PASIDs.
 121           Select this option if you have such an IOMMU and want to compile the
 122           driver for it into your kernel.
 123
 124           If unsure, say N.
 125
 126 config PCI_LABEL
 127         def_bool y if (DMI || ACPI)
 128         select NLS
 129
 130 config PCI_HYPERV
 131         tristate "Hyper-V PCI Frontend"
 132         depends on PCI && X86 && HYPERV && PCI_MSI && PCI_MSI_IRQ_DOMAIN && X86_64
 133         help
 134           The PCI device frontend driver allows the kernel to import arbitrary
 135           PCI devices from a PCI backend to support PCI driver domains.
 136
 137 source "drivers/pci/hotplug/Kconfig"
 138 source "drivers/pci/dwc/Kconfig"
 139 source "drivers/pci/host/Kconfig"
 140 source "drivers/pci/endpoint/Kconfig"
 141 source "drivers/pci/switch/Kconfig"