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gerrit-public.fairphone.software / kernel / msm-4.9 / 9288cac05405a7da406097a44721aa4004609b4d / . / drivers / pci / Kconfig
blob: b6a99f7a9b20786d3ead94f24f6afd1754808e91 [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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]7 help
8 This allows device drivers to enable MSI (Message Signaled
9 Interrupts). Message Signaled Interrupts enable a device to
10 generate an interrupt using an inbound Memory Write on its
11 PCI bus instead of asserting a device IRQ pin.
12
Matthew Wilcox309e57d2006-03-05 22:33:34 -0700[diff] [blame]13 Use of PCI MSI interrupts can be disabled at kernel boot time
14 by using the 'pci=nomsi' option. This disables MSI for the
15 entire system.
16
Jesse Barnes31961802010-04-08 09:38:47 -0700[diff] [blame]17 If you don't know what to do here, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]18
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]19config PCI_DEBUG
20 bool "PCI Debugging"
21 depends on PCI && DEBUG_KERNEL
22 help
23 Say Y here if you want the PCI core to produce a bunch of debug
24 messages to the system log. Select this if you are having a
25 problem with PCI support and want to see more of what is going on.
26
27 When in doubt, say N.
28
Yinghai Lub07f2eb2012-02-23 19:23:32 -0800[diff] [blame]29config PCI_REALLOC_ENABLE_AUTO
30 bool "Enable PCI resource re-allocation detection"
31 depends on PCI
32 help
33 Say Y here if you want the PCI core to detect if PCI resource
34 re-allocation needs to be enabled. You can always use pci=realloc=on
35 or pci=realloc=off to override it. Note this feature is a no-op
36 unless PCI_IOV support is also enabled; in that case it will
37 automatically re-allocate PCI resources if SR-IOV BARs have not
38 been allocated by the BIOS.
39
40 When in doubt, say N.
41
Chris Wrightc70e0d92008-11-25 21:17:13 -0800[diff] [blame]42config PCI_STUB
43 tristate "PCI Stub driver"
44 depends on PCI
45 help
46 Say Y or M here if you want be able to reserve a PCI device
47 when it is going to be assigned to a guest operating system.
48
49 When in doubt, say N.
50
Ryan Wilson956a9202010-08-02 21:31:05 -0400[diff] [blame]51config XEN_PCIDEV_FRONTEND
52 tristate "Xen PCI Frontend"
53 depends on PCI && X86 && XEN
Ryan Wilson956a9202010-08-02 21:31:05 -0400[diff] [blame]54 select PCI_XEN
Konrad Rzeszutek Wilkfce263c12010-12-10 22:33:15 -0500[diff] [blame]55 select XEN_XENBUS_FRONTEND
Ryan Wilson956a9202010-08-02 21:31:05 -0400[diff] [blame]56 default y
57 help
58 The PCI device frontend driver allows the kernel to import arbitrary
59 PCI devices from a PCI backend to support PCI driver domains.
60
Eric W. Biederman8b955b02006-10-04 02:16:55 -0700[diff] [blame]61config HT_IRQ
62 bool "Interrupts on hypertransport devices"
63 default y
Adrian Bunkfbab41c2006-10-11 01:22:04 -0700[diff] [blame]64 depends on PCI && X86_LOCAL_APIC && X86_IO_APIC
Eric W. Biederman8b955b02006-10-04 02:16:55 -0700[diff] [blame]65 help
66 This allows native hypertransport devices to use interrupts.
67
68 If unsure say Y.
Yu Zhaod1b054d2009-03-20 11:25:11 +0800[diff] [blame]69
Joerg Roedeldb3c33c2011-09-27 15:57:13 +0200[diff] [blame]70config PCI_ATS
71 bool
72
Yu Zhaod1b054d2009-03-20 11:25:11 +0800[diff] [blame]73config PCI_IOV
74 bool "PCI IOV support"
75 depends on PCI
Joerg Roedeldb3c33c2011-09-27 15:57:13 +0200[diff] [blame]76 select PCI_ATS
Yu Zhaod1b054d2009-03-20 11:25:11 +0800[diff] [blame]77 help
78 I/O Virtualization is a PCI feature supported by some devices
79 which allows them to create virtual devices which share their
80 physical resources.
81
82 If unsure, say N.
Bjorn Helgaas204d49a2009-10-26 11:20:47 -0600[diff] [blame]83
Joerg Roedelc320b972011-09-27 15:57:15 +0200[diff] [blame]84config PCI_PRI
85 bool "PCI PRI support"
Joerg Roedelc54420d2011-10-30 16:35:07 +0100[diff] [blame]86 depends on PCI
Joerg Roedelc320b972011-09-27 15:57:15 +0200[diff] [blame]87 select PCI_ATS
88 help
89 PRI is the PCI Page Request Interface. It allows PCI devices that are
90 behind an IOMMU to recover from page faults.
91
92 If unsure, say N.
93
Joerg Roedel086ac112011-09-27 15:57:16 +0200[diff] [blame]94config PCI_PASID
95 bool "PCI PASID support"
96 depends on PCI
97 select PCI_ATS
98 help
99 Process Address Space Identifiers (PASIDs) can be used by PCI devices
100 to access more than one IO address space at the same time. To make
101 use of this feature an IOMMU is required which also supports PASIDs.
102 Select this option if you have such an IOMMU and want to compile the
103 driver for it into your kernel.
104
105 If unsure, say N.
106
Bjorn Helgaas204d49a2009-10-26 11:20:47 -0600[diff] [blame]107config PCI_IOAPIC
Jan Beulichb95a7bd2011-12-06 07:49:30 +0000[diff] [blame]108 tristate "PCI IO-APIC hotplug support" if X86
Bjorn Helgaas204d49a2009-10-26 11:20:47 -0600[diff] [blame]109 depends on PCI
110 depends on ACPI
Jan Beulichb95a7bd2011-12-06 07:49:30 +0000[diff] [blame]111 default !X86
Narendra_K@Dell.com60589892011-03-02 22:34:17 +0530[diff] [blame]112
Randy Dunlap8a226e02011-03-29 09:45:57 -0700[diff] [blame]113config PCI_LABEL
114 def_bool y if (DMI || ACPI)
115 select NLS
Thomas Petazzoni45361a42013-05-16 17:55:22 +0200[diff] [blame]116
117source "drivers/pci/host/Kconfig"