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gerrit-public.fairphone.software / kernel / msm-4.19 / f87b0f0dfa5496fc4a701c071fa3ce7ad7ca5152 / . / drivers / pci / Kconfig
blob: 56ff8f6d31fc503598954811e495ac44dcefe597 [file] [log] [blame]
Bjorn Helgaas7328c8f2018-01-26 11:45:16 -0600[diff] [blame]1# SPDX-License-Identifier: GPL-2.0
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]2#
3# PCI configuration
4#
Bogicevic Sasa5f8fc432016-02-03 13:24:22 -0800[diff] [blame]5
6source "drivers/pci/pcie/Kconfig"
7
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]8config PCI_MSI
9 bool "Message Signaled Interrupts (MSI and MSI-X)"
10 depends on PCI
Jiang Liu38b6a1c2014-11-12 12:11:25 +0100[diff] [blame]11 select GENERIC_MSI_IRQ
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]12 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 -0700[diff] [blame]18 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 -0700[diff] [blame]22 If you don't know what to do here, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]23
Jiang Liu3878eae2014-11-11 21:02:18 +0800[diff] [blame]24config PCI_MSI_IRQ_DOMAIN
Joao Pintof8430ea2016-08-09 16:49:37 +0100[diff] [blame]25 def_bool ARC || ARM || ARM64 || X86
Jiang Liu3878eae2014-11-11 21:02:18 +0800[diff] [blame]26 depends on PCI_MSI
27 select GENERIC_MSI_IRQ_DOMAIN
28
Randy Dunlap03ea2262017-11-02 15:14:02 -0700[diff] [blame]29config PCI_QUIRKS
30 default y
31 bool "Enable PCI quirk workarounds" if EXPERT
32 depends on PCI
33 help
34 This enables workarounds for various PCI chipset bugs/quirks.
35 Disable this only if your target machine is unaffected by PCI
36 quirks.
37
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]38config PCI_DEBUG
39 bool "PCI Debugging"
40 depends on PCI && DEBUG_KERNEL
41 help
42 Say Y here if you want the PCI core to produce a bunch of debug
43 messages to the system log. Select this if you are having a
44 problem with PCI support and want to see more of what is going on.
45
46 When in doubt, say N.
47
Yinghai Lub07f2eb2012-02-23 19:23:32 -0800[diff] [blame]48config PCI_REALLOC_ENABLE_AUTO
49 bool "Enable PCI resource re-allocation detection"
50 depends on PCI
Sascha El-Sharkawyad581f82017-09-20 08:44:20 +0200[diff] [blame]51 depends on PCI_IOV
Yinghai Lub07f2eb2012-02-23 19:23:32 -0800[diff] [blame]52 help
53 Say Y here if you want the PCI core to detect if PCI resource
54 re-allocation needs to be enabled. You can always use pci=realloc=on
Sascha El-Sharkawyad581f82017-09-20 08:44:20 +0200[diff] [blame]55 or pci=realloc=off to override it. It will automatically
56 re-allocate PCI resources if SR-IOV BARs have not been allocated by
57 the BIOS.
Yinghai Lub07f2eb2012-02-23 19:23:32 -0800[diff] [blame]58
59 When in doubt, say N.
60
Chris Wrightc70e0d92008-11-25 21:17:13 -0800[diff] [blame]61config PCI_STUB
62 tristate "PCI Stub driver"
63 depends on PCI
64 help
65 Say Y or M here if you want be able to reserve a PCI device
66 when it is going to be assigned to a guest operating system.
67
68 When in doubt, say N.
69
Alexander Duycka8ccf8a2018-04-24 16:47:16 -0500[diff] [blame]70config PCI_PF_STUB
71 tristate "PCI PF Stub driver"
72 depends on PCI
73 depends on PCI_IOV
74 help
75 Say Y or M here if you want to enable support for devices that
76 require SR-IOV support, while at the same time the PF itself is
77 not providing any actual services on the host itself such as
78 storage or networking.
79
80 When in doubt, say N.
81
Ryan Wilson956a9202010-08-02 21:31:05 -0400[diff] [blame]82config XEN_PCIDEV_FRONTEND
83 tristate "Xen PCI Frontend"
84 depends on PCI && X86 && XEN
Ryan Wilson956a9202010-08-02 21:31:05 -0400[diff] [blame]85 select PCI_XEN
Konrad Rzeszutek Wilkfce263c2010-12-10 22:33:15 -0500[diff] [blame]86 select XEN_XENBUS_FRONTEND
Ryan Wilson956a9202010-08-02 21:31:05 -0400[diff] [blame]87 default y
88 help
89 The PCI device frontend driver allows the kernel to import arbitrary
90 PCI devices from a PCI backend to support PCI driver domains.
91
Joerg Roedeldb3c33c2011-09-27 15:57:13 +0200[diff] [blame]92config PCI_ATS
93 bool
94
Jayachandran C35ff9472016-05-10 17:19:51 +0200[diff] [blame]95config PCI_ECAM
96 bool
97
Thomas Gleixner714fe382017-03-16 22:50:06 +0100[diff] [blame]98config PCI_LOCKLESS_CONFIG
99 bool
100
Yu Zhaod1b054d2009-03-20 11:25:11 +0800[diff] [blame]101config PCI_IOV
102 bool "PCI IOV support"
103 depends on PCI
Joerg Roedeldb3c33c2011-09-27 15:57:13 +0200[diff] [blame]104 select PCI_ATS
Yu Zhaod1b054d2009-03-20 11:25:11 +0800[diff] [blame]105 help
106 I/O Virtualization is a PCI feature supported by some devices
107 which allows them to create virtual devices which share their
108 physical resources.
109
110 If unsure, say N.
Bjorn Helgaas204d49a2009-10-26 11:20:47 -0600[diff] [blame]111
Joerg Roedelc320b972011-09-27 15:57:15 +0200[diff] [blame]112config PCI_PRI
113 bool "PCI PRI support"
Joerg Roedelc54420d2011-10-30 16:35:07 +0100[diff] [blame]114 depends on PCI
Joerg Roedelc320b972011-09-27 15:57:15 +0200[diff] [blame]115 select PCI_ATS
116 help
117 PRI is the PCI Page Request Interface. It allows PCI devices that are
118 behind an IOMMU to recover from page faults.
119
120 If unsure, say N.
121
Joerg Roedel086ac112011-09-27 15:57:16 +0200[diff] [blame]122config PCI_PASID
123 bool "PCI PASID support"
124 depends on PCI
125 select PCI_ATS
126 help
127 Process Address Space Identifiers (PASIDs) can be used by PCI devices
128 to access more than one IO address space at the same time. To make
129 use of this feature an IOMMU is required which also supports PASIDs.
130 Select this option if you have such an IOMMU and want to compile the
131 driver for it into your kernel.
132
133 If unsure, say N.
134
Randy Dunlap8a226e02011-03-29 09:45:57 -0700[diff] [blame]135config PCI_LABEL
136 def_bool y if (DMI || ACPI)
Cyrille Pitchen9de0eec2018-01-30 21:56:49 +0100[diff] [blame]137 depends on PCI
Randy Dunlap8a226e02011-03-29 09:45:57 -0700[diff] [blame]138 select NLS
Thomas Petazzoni45361a42013-05-16 17:55:22 +0200[diff] [blame]139
Jake Oshins4daace02016-02-16 21:56:23 +0000[diff] [blame]140config PCI_HYPERV
141 tristate "Hyper-V PCI Frontend"
142 depends on PCI && X86 && HYPERV && PCI_MSI && PCI_MSI_IRQ_DOMAIN && X86_64
143 help
144 The PCI device frontend driver allows the kernel to import arbitrary
145 PCI devices from a PCI backend to support PCI driver domains.
146
Tero Roponen30b5b882016-03-21 09:26:41 +0200[diff] [blame]147source "drivers/pci/hotplug/Kconfig"
Shawn Lin6e0832f2018-05-31 09:12:37 +0800[diff] [blame]148source "drivers/pci/controller/Kconfig"
Kishon Vijay Abraham I5e8cb402017-04-10 19:25:10 +0530[diff] [blame]149source "drivers/pci/endpoint/Kconfig"
Logan Gunthorpe080b47d2017-03-06 18:30:54 -0600[diff] [blame]150source "drivers/pci/switch/Kconfig"