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Linux/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"

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