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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
Chris Wrightc70e0d92008-11-25 21:17:13 -080034config PCI_STUB
35 tristate "PCI Stub driver"
36 depends on PCI
37 help
38 Say Y or M here if you want be able to reserve a PCI device
39 when it is going to be assigned to a guest operating system.
40
41 When in doubt, say N.
42
Ryan Wilson956a9202010-08-02 21:31:05 -040043config XEN_PCIDEV_FRONTEND
44 tristate "Xen PCI Frontend"
45 depends on PCI && X86 && XEN
46 select HOTPLUG
47 select PCI_XEN
Konrad Rzeszutek Wilkfce263c2010-12-10 22:33:15 -050048 select XEN_XENBUS_FRONTEND
Ryan Wilson956a9202010-08-02 21:31:05 -040049 default y
50 help
51 The PCI device frontend driver allows the kernel to import arbitrary
52 PCI devices from a PCI backend to support PCI driver domains.
53
Eric W. Biederman8b955b02006-10-04 02:16:55 -070054config HT_IRQ
55 bool "Interrupts on hypertransport devices"
56 default y
Adrian Bunkfbab41c2006-10-11 01:22:04 -070057 depends on PCI && X86_LOCAL_APIC && X86_IO_APIC
Eric W. Biederman8b955b02006-10-04 02:16:55 -070058 help
59 This allows native hypertransport devices to use interrupts.
60
61 If unsure say Y.
Yu Zhaod1b054d2009-03-20 11:25:11 +080062
Joerg Roedeldb3c33c2011-09-27 15:57:13 +020063config PCI_ATS
64 bool
65
Yu Zhaod1b054d2009-03-20 11:25:11 +080066config PCI_IOV
67 bool "PCI IOV support"
68 depends on PCI
Joerg Roedeldb3c33c2011-09-27 15:57:13 +020069 select PCI_ATS
Yu Zhaod1b054d2009-03-20 11:25:11 +080070 help
71 I/O Virtualization is a PCI feature supported by some devices
72 which allows them to create virtual devices which share their
73 physical resources.
74
75 If unsure, say N.
Bjorn Helgaas204d49a2009-10-26 11:20:47 -060076
Joerg Roedelc320b972011-09-27 15:57:15 +020077config PCI_PRI
78 bool "PCI PRI support"
Joerg Roedelc54420d2011-10-30 16:35:07 +010079 depends on PCI
Joerg Roedelc320b972011-09-27 15:57:15 +020080 select PCI_ATS
81 help
82 PRI is the PCI Page Request Interface. It allows PCI devices that are
83 behind an IOMMU to recover from page faults.
84
85 If unsure, say N.
86
Joerg Roedel086ac112011-09-27 15:57:16 +020087config PCI_PASID
88 bool "PCI PASID support"
89 depends on PCI
90 select PCI_ATS
91 help
92 Process Address Space Identifiers (PASIDs) can be used by PCI devices
93 to access more than one IO address space at the same time. To make
94 use of this feature an IOMMU is required which also supports PASIDs.
95 Select this option if you have such an IOMMU and want to compile the
96 driver for it into your kernel.
97
98 If unsure, say N.
99
Bjorn Helgaas204d49a2009-10-26 11:20:47 -0600100config PCI_IOAPIC
Jan Beulichb95a7bd2011-12-06 07:49:30 +0000101 tristate "PCI IO-APIC hotplug support" if X86
Bjorn Helgaas204d49a2009-10-26 11:20:47 -0600102 depends on PCI
103 depends on ACPI
104 depends on HOTPLUG
Jan Beulichb95a7bd2011-12-06 07:49:30 +0000105 default !X86
Narendra_K@Dell.com60589892011-03-02 22:34:17 +0530106
Randy Dunlap8a226e02011-03-29 09:45:57 -0700107config PCI_LABEL
108 def_bool y if (DMI || ACPI)
109 select NLS