Root/drivers/pci/Kconfig

1#
2# PCI configuration
3#
4config ARCH_SUPPORTS_MSI
5    bool
6
7config PCI_MSI
8    bool "Message Signaled Interrupts (MSI and MSI-X)"
9    depends on PCI
10    depends on ARCH_SUPPORTS_MSI
11    help
12       This allows device drivers to enable MSI (Message Signaled
13       Interrupts). Message Signaled Interrupts enable a device to
14       generate an interrupt using an inbound Memory Write on its
15       PCI bus instead of asserting a device IRQ pin.
16
17       Use of PCI MSI interrupts can be disabled at kernel boot time
18       by using the 'pci=nomsi' option. This disables MSI for the
19       entire system.
20
21       If you don't know what to do here, say Y.
22
23config PCI_DEBUG
24    bool "PCI Debugging"
25    depends on PCI && DEBUG_KERNEL
26    help
27      Say Y here if you want the PCI core to produce a bunch of debug
28      messages to the system log. Select this if you are having a
29      problem with PCI support and want to see more of what is going on.
30
31      When in doubt, say N.
32
33config PCI_REALLOC_ENABLE_AUTO
34    bool "Enable PCI resource re-allocation detection"
35    depends on PCI
36    help
37      Say Y here if you want the PCI core to detect if PCI resource
38      re-allocation needs to be enabled. You can always use pci=realloc=on
39          or pci=realloc=off to override it. Note this feature is a no-op
40          unless PCI_IOV support is also enabled; in that case it will
41          automatically re-allocate PCI resources if SR-IOV BARs have not
42          been allocated by the BIOS.
43
44      When in doubt, say N.
45
46config PCI_STUB
47    tristate "PCI Stub driver"
48    depends on PCI
49    help
50      Say Y or M here if you want be able to reserve a PCI device
51      when it is going to be assigned to a guest operating system.
52
53      When in doubt, say N.
54
55config XEN_PCIDEV_FRONTEND
56        tristate "Xen PCI Frontend"
57        depends on PCI && X86 && XEN
58        select HOTPLUG
59        select PCI_XEN
60    select XEN_XENBUS_FRONTEND
61        default y
62        help
63          The PCI device frontend driver allows the kernel to import arbitrary
64          PCI devices from a PCI backend to support PCI driver domains.
65
66config HT_IRQ
67    bool "Interrupts on hypertransport devices"
68    default y
69    depends on PCI && X86_LOCAL_APIC && X86_IO_APIC
70    help
71       This allows native hypertransport devices to use interrupts.
72
73       If unsure say Y.
74
75config PCI_ATS
76    bool
77
78config PCI_IOV
79    bool "PCI IOV support"
80    depends on PCI
81    select PCI_ATS
82    help
83      I/O Virtualization is a PCI feature supported by some devices
84      which allows them to create virtual devices which share their
85      physical resources.
86
87      If unsure, say N.
88
89config PCI_PRI
90    bool "PCI PRI support"
91    depends on PCI
92    select PCI_ATS
93    help
94      PRI is the PCI Page Request Interface. It allows PCI devices that are
95      behind an IOMMU to recover from page faults.
96
97      If unsure, say N.
98
99config PCI_PASID
100    bool "PCI PASID support"
101    depends on PCI
102    select PCI_ATS
103    help
104      Process Address Space Identifiers (PASIDs) can be used by PCI devices
105      to access more than one IO address space at the same time. To make
106      use of this feature an IOMMU is required which also supports PASIDs.
107      Select this option if you have such an IOMMU and want to compile the
108      driver for it into your kernel.
109
110      If unsure, say N.
111
112config PCI_IOAPIC
113    tristate "PCI IO-APIC hotplug support" if X86
114    depends on PCI
115    depends on ACPI
116    depends on HOTPLUG
117    default !X86
118
119config PCI_LABEL
120    def_bool y if (DMI || ACPI)
121    select NLS
122

Archive Download this file



interactive