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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#
2# PCI configuration
3#
Dan Williamsf282b972007-04-18 18:46:20 +10004config ARCH_SUPPORTS_MSI
5 bool
6 default n
7
Linus Torvalds1da177e2005-04-16 15:20:36 -07008config PCI_MSI
9 bool "Message Signaled Interrupts (MSI and MSI-X)"
10 depends on PCI
Dan Williamsf282b972007-04-18 18:46:20 +100011 depends on ARCH_SUPPORTS_MSI
Linus Torvalds1da177e2005-04-16 15:20:36 -070012 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
Matthew Wilcox309e57d2006-03-05 22:33:34 -070018 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
Jesse Barnes31961802010-04-08 09:38:47 -070022 If you don't know what to do here, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -070023
Linus Torvalds1da177e2005-04-16 15:20:36 -070024config PCI_DEBUG
25 bool "PCI Debugging"
26 depends on PCI && DEBUG_KERNEL
27 help
28 Say Y here if you want the PCI core to produce a bunch of debug
29 messages to the system log. Select this if you are having a
30 problem with PCI support and want to see more of what is going on.
31
32 When in doubt, say N.
33
Yinghai Lub07f2eb2012-02-23 19:23:32 -080034config PCI_REALLOC_ENABLE_AUTO
35 bool "Enable PCI resource re-allocation detection"
36 depends on PCI
37 help
38 Say Y here if you want the PCI core to detect if PCI resource
39 re-allocation needs to be enabled. You can always use pci=realloc=on
40 or pci=realloc=off to override it. Note this feature is a no-op
41 unless PCI_IOV support is also enabled; in that case it will
42 automatically re-allocate PCI resources if SR-IOV BARs have not
43 been allocated by the BIOS.
44
45 When in doubt, say N.
46
Chris Wrightc70e0d92008-11-25 21:17:13 -080047config PCI_STUB
48 tristate "PCI Stub driver"
49 depends on PCI
50 help
51 Say Y or M here if you want be able to reserve a PCI device
52 when it is going to be assigned to a guest operating system.
53
54 When in doubt, say N.
55
Ryan Wilson956a9202010-08-02 21:31:05 -040056config XEN_PCIDEV_FRONTEND
57 tristate "Xen PCI Frontend"
58 depends on PCI && X86 && XEN
59 select HOTPLUG
60 select PCI_XEN
Konrad Rzeszutek Wilkfce263c12010-12-10 22:33:15 -050061 select XEN_XENBUS_FRONTEND
Ryan Wilson956a9202010-08-02 21:31:05 -040062 default y
63 help
64 The PCI device frontend driver allows the kernel to import arbitrary
65 PCI devices from a PCI backend to support PCI driver domains.
66
Eric W. Biederman8b955b02006-10-04 02:16:55 -070067config HT_IRQ
68 bool "Interrupts on hypertransport devices"
69 default y
Adrian Bunkfbab41c2006-10-11 01:22:04 -070070 depends on PCI && X86_LOCAL_APIC && X86_IO_APIC
Eric W. Biederman8b955b02006-10-04 02:16:55 -070071 help
72 This allows native hypertransport devices to use interrupts.
73
74 If unsure say Y.
Yu Zhaod1b054d2009-03-20 11:25:11 +080075
Joerg Roedeldb3c33c2011-09-27 15:57:13 +020076config PCI_ATS
77 bool
78
Yu Zhaod1b054d2009-03-20 11:25:11 +080079config PCI_IOV
80 bool "PCI IOV support"
81 depends on PCI
Joerg Roedeldb3c33c2011-09-27 15:57:13 +020082 select PCI_ATS
Yu Zhaod1b054d2009-03-20 11:25:11 +080083 help
84 I/O Virtualization is a PCI feature supported by some devices
85 which allows them to create virtual devices which share their
86 physical resources.
87
88 If unsure, say N.
Bjorn Helgaas204d49a2009-10-26 11:20:47 -060089
Joerg Roedelc320b972011-09-27 15:57:15 +020090config PCI_PRI
91 bool "PCI PRI support"
Joerg Roedelc54420d2011-10-30 16:35:07 +010092 depends on PCI
Joerg Roedelc320b972011-09-27 15:57:15 +020093 select PCI_ATS
94 help
95 PRI is the PCI Page Request Interface. It allows PCI devices that are
96 behind an IOMMU to recover from page faults.
97
98 If unsure, say N.
99
Joerg Roedel086ac112011-09-27 15:57:16 +0200100config PCI_PASID
101 bool "PCI PASID support"
102 depends on PCI
103 select PCI_ATS
104 help
105 Process Address Space Identifiers (PASIDs) can be used by PCI devices
106 to access more than one IO address space at the same time. To make
107 use of this feature an IOMMU is required which also supports PASIDs.
108 Select this option if you have such an IOMMU and want to compile the
109 driver for it into your kernel.
110
111 If unsure, say N.
112
Bjorn Helgaas204d49a2009-10-26 11:20:47 -0600113config PCI_IOAPIC
Jan Beulichb95a7bd2011-12-06 07:49:30 +0000114 tristate "PCI IO-APIC hotplug support" if X86
Bjorn Helgaas204d49a2009-10-26 11:20:47 -0600115 depends on PCI
116 depends on ACPI
117 depends on HOTPLUG
Jan Beulichb95a7bd2011-12-06 07:49:30 +0000118 default !X86
Narendra_K@Dell.com60589892011-03-02 22:34:17 +0530119
Randy Dunlap8a226e02011-03-29 09:45:57 -0700120config PCI_LABEL
121 def_bool y if (DMI || ACPI)
122 select NLS