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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
54config XEN_PCIDEV_FE_DEBUG
55 bool "Xen PCI Frontend debugging"
56 depends on XEN_PCIDEV_FRONTEND && PCI_DEBUG
57 help
58 Say Y here if you want the Xen PCI frontend to produce a bunch of debug
59 messages to the system log. Select this if you are having a
60 problem with Xen PCI frontend support and want to see more of what is
61 going on.
62
63 When in doubt, say N.
64
Eric W. Biederman8b955b02006-10-04 02:16:55 -070065config HT_IRQ
66 bool "Interrupts on hypertransport devices"
67 default y
Adrian Bunkfbab41c2006-10-11 01:22:04 -070068 depends on PCI && X86_LOCAL_APIC && X86_IO_APIC
Eric W. Biederman8b955b02006-10-04 02:16:55 -070069 help
70 This allows native hypertransport devices to use interrupts.
71
72 If unsure say Y.
Yu Zhaod1b054d2009-03-20 11:25:11 +080073
Joerg Roedeldb3c33c2011-09-27 15:57:13 +020074config PCI_ATS
75 bool
76
Yu Zhaod1b054d2009-03-20 11:25:11 +080077config PCI_IOV
78 bool "PCI IOV support"
79 depends on PCI
Joerg Roedeldb3c33c2011-09-27 15:57:13 +020080 select PCI_ATS
Yu Zhaod1b054d2009-03-20 11:25:11 +080081 help
82 I/O Virtualization is a PCI feature supported by some devices
83 which allows them to create virtual devices which share their
84 physical resources.
85
86 If unsure, say N.
Bjorn Helgaas204d49a2009-10-26 11:20:47 -060087
Joerg Roedelc320b972011-09-27 15:57:15 +020088config PCI_PRI
89 bool "PCI PRI support"
90 select PCI_ATS
91 help
92 PRI is the PCI Page Request Interface. It allows PCI devices that are
93 behind an IOMMU to recover from page faults.
94
95 If unsure, say N.
96
Joerg Roedel086ac112011-09-27 15:57:16 +020097config PCI_PASID
98 bool "PCI PASID support"
99 depends on PCI
100 select PCI_ATS
101 help
102 Process Address Space Identifiers (PASIDs) can be used by PCI devices
103 to access more than one IO address space at the same time. To make
104 use of this feature an IOMMU is required which also supports PASIDs.
105 Select this option if you have such an IOMMU and want to compile the
106 driver for it into your kernel.
107
108 If unsure, say N.
109
Bjorn Helgaas204d49a2009-10-26 11:20:47 -0600110config PCI_IOAPIC
111 bool
112 depends on PCI
113 depends on ACPI
114 depends on HOTPLUG
115 default y
Narendra_K@Dell.com60589892011-03-02 22:34:17 +0530116
Randy Dunlap8a226e02011-03-29 09:45:57 -0700117config PCI_LABEL
118 def_bool y if (DMI || ACPI)
119 select NLS