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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#
2# PCI configuration
3#
4config PCI_MSI
5 bool "Message Signaled Interrupts (MSI and MSI-X)"
6 depends on PCI
Jiang Liu38b6a1c2014-11-12 12:11:25 +01007 select GENERIC_MSI_IRQ
Linus Torvalds1da177e2005-04-16 15:20:36 -07008 help
9 This allows device drivers to enable MSI (Message Signaled
10 Interrupts). Message Signaled Interrupts enable a device to
11 generate an interrupt using an inbound Memory Write on its
12 PCI bus instead of asserting a device IRQ pin.
13
Matthew Wilcox309e57d2006-03-05 22:33:34 -070014 Use of PCI MSI interrupts can be disabled at kernel boot time
15 by using the 'pci=nomsi' option. This disables MSI for the
16 entire system.
17
Jesse Barnes31961802010-04-08 09:38:47 -070018 If you don't know what to do here, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -070019
Linus Torvalds1da177e2005-04-16 15:20:36 -070020config PCI_DEBUG
21 bool "PCI Debugging"
22 depends on PCI && DEBUG_KERNEL
23 help
24 Say Y here if you want the PCI core to produce a bunch of debug
25 messages to the system log. Select this if you are having a
26 problem with PCI support and want to see more of what is going on.
27
28 When in doubt, say N.
29
Yinghai Lub07f2eb2012-02-23 19:23:32 -080030config PCI_REALLOC_ENABLE_AUTO
31 bool "Enable PCI resource re-allocation detection"
32 depends on PCI
33 help
34 Say Y here if you want the PCI core to detect if PCI resource
35 re-allocation needs to be enabled. You can always use pci=realloc=on
36 or pci=realloc=off to override it. Note this feature is a no-op
37 unless PCI_IOV support is also enabled; in that case it will
38 automatically re-allocate PCI resources if SR-IOV BARs have not
39 been allocated by the BIOS.
40
41 When in doubt, say N.
42
Chris Wrightc70e0d92008-11-25 21:17:13 -080043config PCI_STUB
44 tristate "PCI Stub driver"
45 depends on PCI
46 help
47 Say Y or M here if you want be able to reserve a PCI device
48 when it is going to be assigned to a guest operating system.
49
50 When in doubt, say N.
51
Ryan Wilson956a9202010-08-02 21:31:05 -040052config XEN_PCIDEV_FRONTEND
53 tristate "Xen PCI Frontend"
54 depends on PCI && X86 && XEN
Ryan Wilson956a9202010-08-02 21:31:05 -040055 select PCI_XEN
Konrad Rzeszutek Wilkfce263c12010-12-10 22:33:15 -050056 select XEN_XENBUS_FRONTEND
Ryan Wilson956a9202010-08-02 21:31:05 -040057 default y
58 help
59 The PCI device frontend driver allows the kernel to import arbitrary
60 PCI devices from a PCI backend to support PCI driver domains.
61
Eric W. Biederman8b955b02006-10-04 02:16:55 -070062config HT_IRQ
63 bool "Interrupts on hypertransport devices"
64 default y
Adrian Bunkfbab41c2006-10-11 01:22:04 -070065 depends on PCI && X86_LOCAL_APIC && X86_IO_APIC
Eric W. Biederman8b955b02006-10-04 02:16:55 -070066 help
67 This allows native hypertransport devices to use interrupts.
68
69 If unsure say Y.
Yu Zhaod1b054d2009-03-20 11:25:11 +080070
Joerg Roedeldb3c33c2011-09-27 15:57:13 +020071config PCI_ATS
72 bool
73
Yu Zhaod1b054d2009-03-20 11:25:11 +080074config PCI_IOV
75 bool "PCI IOV support"
76 depends on PCI
Joerg Roedeldb3c33c2011-09-27 15:57:13 +020077 select PCI_ATS
Yu Zhaod1b054d2009-03-20 11:25:11 +080078 help
79 I/O Virtualization is a PCI feature supported by some devices
80 which allows them to create virtual devices which share their
81 physical resources.
82
83 If unsure, say N.
Bjorn Helgaas204d49a2009-10-26 11:20:47 -060084
Joerg Roedelc320b972011-09-27 15:57:15 +020085config PCI_PRI
86 bool "PCI PRI support"
Joerg Roedelc54420d2011-10-30 16:35:07 +010087 depends on PCI
Joerg Roedelc320b972011-09-27 15:57:15 +020088 select PCI_ATS
89 help
90 PRI is the PCI Page Request Interface. It allows PCI devices that are
91 behind an IOMMU to recover from page faults.
92
93 If unsure, say N.
94
Joerg Roedel086ac112011-09-27 15:57:16 +020095config PCI_PASID
96 bool "PCI PASID support"
97 depends on PCI
98 select PCI_ATS
99 help
100 Process Address Space Identifiers (PASIDs) can be used by PCI devices
101 to access more than one IO address space at the same time. To make
102 use of this feature an IOMMU is required which also supports PASIDs.
103 Select this option if you have such an IOMMU and want to compile the
104 driver for it into your kernel.
105
106 If unsure, say N.
107
Bjorn Helgaas204d49a2009-10-26 11:20:47 -0600108config PCI_IOAPIC
Yinghai Lu77410432014-01-02 16:05:57 -0800109 bool "PCI IO-APIC hotplug support" if X86
Bjorn Helgaas204d49a2009-10-26 11:20:47 -0600110 depends on PCI
111 depends on ACPI
Yinghai Lu77410432014-01-02 16:05:57 -0800112 depends on X86_IO_APIC
Jan Beulichb95a7bd2011-12-06 07:49:30 +0000113 default !X86
Narendra_K@Dell.com60589892011-03-02 22:34:17 +0530114
Randy Dunlap8a226e02011-03-29 09:45:57 -0700115config PCI_LABEL
116 def_bool y if (DMI || ACPI)
117 select NLS
Thomas Petazzoni45361a42013-05-16 17:55:22 +0200118
119source "drivers/pci/host/Kconfig"