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gerrit-public.fairphone.software / kernel / msm-4.9 / bd1ba664147ae271e592aa90266cf9aba6efe116 / . / drivers / pci / Kconfig
blob: cced84233ac0f9e11f0b7a3ddb5dad39817325a9 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1#
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 +0100[diff] [blame]7 select GENERIC_MSI_IRQ
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]8 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 -0700[diff] [blame]14 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 -0700[diff] [blame]18 If you don't know what to do here, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]19
Jiang Liu3878eae2014-11-11 21:02:18 +0800[diff] [blame]20config PCI_MSI_IRQ_DOMAIN
21 bool
22 depends on PCI_MSI
23 select GENERIC_MSI_IRQ_DOMAIN
24
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]25config PCI_DEBUG
26 bool "PCI Debugging"
27 depends on PCI && DEBUG_KERNEL
28 help
29 Say Y here if you want the PCI core to produce a bunch of debug
30 messages to the system log. Select this if you are having a
31 problem with PCI support and want to see more of what is going on.
32
33 When in doubt, say N.
34
Yinghai Lub07f2eb2012-02-23 19:23:32 -0800[diff] [blame]35config PCI_REALLOC_ENABLE_AUTO
36 bool "Enable PCI resource re-allocation detection"
37 depends on PCI
38 help
39 Say Y here if you want the PCI core to detect if PCI resource
40 re-allocation needs to be enabled. You can always use pci=realloc=on
41 or pci=realloc=off to override it. Note this feature is a no-op
42 unless PCI_IOV support is also enabled; in that case it will
43 automatically re-allocate PCI resources if SR-IOV BARs have not
44 been allocated by the BIOS.
45
46 When in doubt, say N.
47
Chris Wrightc70e0d92008-11-25 21:17:13 -0800[diff] [blame]48config PCI_STUB
49 tristate "PCI Stub driver"
50 depends on PCI
51 help
52 Say Y or M here if you want be able to reserve a PCI device
53 when it is going to be assigned to a guest operating system.
54
55 When in doubt, say N.
56
Ryan Wilson956a9202010-08-02 21:31:05 -0400[diff] [blame]57config XEN_PCIDEV_FRONTEND
58 tristate "Xen PCI Frontend"
59 depends on PCI && X86 && XEN
Ryan Wilson956a9202010-08-02 21:31:05 -0400[diff] [blame]60 select PCI_XEN
Konrad Rzeszutek Wilkfce263c12010-12-10 22:33:15 -0500[diff] [blame]61 select XEN_XENBUS_FRONTEND
Ryan Wilson956a9202010-08-02 21:31:05 -0400[diff] [blame]62 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 -0700[diff] [blame]67config HT_IRQ
68 bool "Interrupts on hypertransport devices"
69 default y
Adrian Bunkfbab41c2006-10-11 01:22:04 -0700[diff] [blame]70 depends on PCI && X86_LOCAL_APIC && X86_IO_APIC
Eric W. Biederman8b955b02006-10-04 02:16:55 -0700[diff] [blame]71 help
72 This allows native hypertransport devices to use interrupts.
73
74 If unsure say Y.
Yu Zhaod1b054d2009-03-20 11:25:11 +0800[diff] [blame]75
Joerg Roedeldb3c33c2011-09-27 15:57:13 +0200[diff] [blame]76config PCI_ATS
77 bool
78
Yu Zhaod1b054d2009-03-20 11:25:11 +0800[diff] [blame]79config PCI_IOV
80 bool "PCI IOV support"
81 depends on PCI
Joerg Roedeldb3c33c2011-09-27 15:57:13 +0200[diff] [blame]82 select PCI_ATS
Yu Zhaod1b054d2009-03-20 11:25:11 +0800[diff] [blame]83 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 -0600[diff] [blame]89
Joerg Roedelc320b972011-09-27 15:57:15 +0200[diff] [blame]90config PCI_PRI
91 bool "PCI PRI support"
Joerg Roedelc54420d2011-10-30 16:35:07 +0100[diff] [blame]92 depends on PCI
Joerg Roedelc320b972011-09-27 15:57:15 +0200[diff] [blame]93 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 +0200[diff] [blame]100config 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 -0600[diff] [blame]113config PCI_IOAPIC
Yinghai Lu77410432014-01-02 16:05:57 -0800[diff] [blame]114 bool "PCI IO-APIC hotplug support" if X86
Bjorn Helgaas204d49a2009-10-26 11:20:47 -0600[diff] [blame]115 depends on PCI
116 depends on ACPI
Yinghai Lu77410432014-01-02 16:05:57 -0800[diff] [blame]117 depends on X86_IO_APIC
Jan Beulichb95a7bd2011-12-06 07:49:30 +0000[diff] [blame]118 default !X86
Narendra_K@Dell.com60589892011-03-02 22:34:17 +0530[diff] [blame]119
Randy Dunlap8a226e02011-03-29 09:45:57 -0700[diff] [blame]120config PCI_LABEL
121 def_bool y if (DMI || ACPI)
122 select NLS
Thomas Petazzoni45361a42013-05-16 17:55:22 +0200[diff] [blame]123
124source "drivers/pci/host/Kconfig"