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Linux/drivers/pci/Kconfig

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

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