Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | # |
2 | # PCI configuration | |
3 | # | |
f282b970 DW |
4 | config ARCH_SUPPORTS_MSI |
5 | bool | |
f282b970 | 6 | |
1da177e4 LT |
7 | config PCI_MSI |
8 | bool "Message Signaled Interrupts (MSI and MSI-X)" | |
9 | depends on PCI | |
f282b970 | 10 | depends on ARCH_SUPPORTS_MSI |
1da177e4 LT |
11 | help |
12 | This allows device drivers to enable MSI (Message Signaled | |
13 | Interrupts). Message Signaled Interrupts enable a device to | |
14 | generate an interrupt using an inbound Memory Write on its | |
15 | PCI bus instead of asserting a device IRQ pin. | |
16 | ||
309e57df MW |
17 | Use of PCI MSI interrupts can be disabled at kernel boot time |
18 | by using the 'pci=nomsi' option. This disables MSI for the | |
19 | entire system. | |
20 | ||
3196180a | 21 | If you don't know what to do here, say Y. |
1da177e4 | 22 | |
1da177e4 LT |
23 | config PCI_DEBUG |
24 | bool "PCI Debugging" | |
25 | depends on PCI && DEBUG_KERNEL | |
26 | help | |
27 | Say Y here if you want the PCI core to produce a bunch of debug | |
28 | messages to the system log. Select this if you are having a | |
29 | problem with PCI support and want to see more of what is going on. | |
30 | ||
31 | When in doubt, say N. | |
32 | ||
b07f2ebc YL |
33 | config PCI_REALLOC_ENABLE_AUTO |
34 | bool "Enable PCI resource re-allocation detection" | |
35 | depends on PCI | |
36 | help | |
37 | Say Y here if you want the PCI core to detect if PCI resource | |
38 | re-allocation needs to be enabled. You can always use pci=realloc=on | |
39 | or pci=realloc=off to override it. Note this feature is a no-op | |
40 | unless PCI_IOV support is also enabled; in that case it will | |
41 | automatically re-allocate PCI resources if SR-IOV BARs have not | |
42 | been allocated by the BIOS. | |
43 | ||
44 | When in doubt, say N. | |
45 | ||
c70e0d9d CW |
46 | config PCI_STUB |
47 | tristate "PCI Stub driver" | |
48 | depends on PCI | |
49 | help | |
50 | Say Y or M here if you want be able to reserve a PCI device | |
51 | when it is going to be assigned to a guest operating system. | |
52 | ||
53 | When in doubt, say N. | |
54 | ||
956a9202 RW |
55 | config XEN_PCIDEV_FRONTEND |
56 | tristate "Xen PCI Frontend" | |
57 | depends on PCI && X86 && XEN | |
956a9202 | 58 | select PCI_XEN |
fce263c1 | 59 | select XEN_XENBUS_FRONTEND |
956a9202 RW |
60 | default y |
61 | help | |
62 | The PCI device frontend driver allows the kernel to import arbitrary | |
63 | PCI devices from a PCI backend to support PCI driver domains. | |
64 | ||
8b955b0d EB |
65 | config HT_IRQ |
66 | bool "Interrupts on hypertransport devices" | |
67 | default y | |
fbab41cc | 68 | depends on PCI && X86_LOCAL_APIC && X86_IO_APIC |
8b955b0d EB |
69 | help |
70 | This allows native hypertransport devices to use interrupts. | |
71 | ||
72 | If unsure say Y. | |
d1b054da | 73 | |
db3c33c6 JR |
74 | config PCI_ATS |
75 | bool | |
76 | ||
d1b054da YZ |
77 | config PCI_IOV |
78 | bool "PCI IOV support" | |
79 | depends on PCI | |
db3c33c6 | 80 | select PCI_ATS |
d1b054da YZ |
81 | 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. | |
204d49a5 | 87 | |
c320b976 JR |
88 | config PCI_PRI |
89 | bool "PCI PRI support" | |
c54420d3 | 90 | depends on PCI |
c320b976 JR |
91 | select PCI_ATS |
92 | help | |
93 | PRI is the PCI Page Request Interface. It allows PCI devices that are | |
94 | behind an IOMMU to recover from page faults. | |
95 | ||
96 | If unsure, say N. | |
97 | ||
086ac11f JR |
98 | config PCI_PASID |
99 | bool "PCI PASID support" | |
100 | depends on PCI | |
101 | select PCI_ATS | |
102 | help | |
103 | Process Address Space Identifiers (PASIDs) can be used by PCI devices | |
104 | to access more than one IO address space at the same time. To make | |
105 | use of this feature an IOMMU is required which also supports PASIDs. | |
106 | Select this option if you have such an IOMMU and want to compile the | |
107 | driver for it into your kernel. | |
108 | ||
109 | If unsure, say N. | |
110 | ||
204d49a5 | 111 | config PCI_IOAPIC |
b95a7bd7 | 112 | tristate "PCI IO-APIC hotplug support" if X86 |
204d49a5 BH |
113 | depends on PCI |
114 | depends on ACPI | |
b95a7bd7 | 115 | default !X86 |
6058989b | 116 | |
8a226e00 RD |
117 | config PCI_LABEL |
118 | def_bool y if (DMI || ACPI) | |
119 | select NLS | |
45361a4f TP |
120 | |
121 | source "drivers/pci/host/Kconfig" |