Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | # |
2 | # PCI configuration | |
3 | # | |
f282b970 DW |
4 | config ARCH_SUPPORTS_MSI |
5 | bool | |
6 | default n | |
7 | ||
1da177e4 LT |
8 | config PCI_MSI |
9 | bool "Message Signaled Interrupts (MSI and MSI-X)" | |
10 | depends on PCI | |
f282b970 | 11 | depends on ARCH_SUPPORTS_MSI |
1da177e4 LT |
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 | ||
309e57df MW |
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 | ||
3196180a | 22 | If you don't know what to do here, say Y. |
1da177e4 | 23 | |
1da177e4 LT |
24 | config PCI_DEBUG |
25 | bool "PCI Debugging" | |
26 | depends on PCI && DEBUG_KERNEL | |
27 | help | |
28 | Say Y here if you want the PCI core to produce a bunch of debug | |
29 | messages to the system log. Select this if you are having a | |
30 | problem with PCI support and want to see more of what is going on. | |
31 | ||
32 | When in doubt, say N. | |
33 | ||
b07f2ebc YL |
34 | config PCI_REALLOC_ENABLE_AUTO |
35 | bool "Enable PCI resource re-allocation detection" | |
36 | depends on PCI | |
37 | help | |
38 | Say Y here if you want the PCI core to detect if PCI resource | |
39 | re-allocation needs to be enabled. You can always use pci=realloc=on | |
40 | or pci=realloc=off to override it. Note this feature is a no-op | |
41 | unless PCI_IOV support is also enabled; in that case it will | |
42 | automatically re-allocate PCI resources if SR-IOV BARs have not | |
43 | been allocated by the BIOS. | |
44 | ||
45 | When in doubt, say N. | |
46 | ||
c70e0d9d CW |
47 | config PCI_STUB |
48 | tristate "PCI Stub driver" | |
49 | depends on PCI | |
50 | help | |
51 | Say Y or M here if you want be able to reserve a PCI device | |
52 | when it is going to be assigned to a guest operating system. | |
53 | ||
54 | When in doubt, say N. | |
55 | ||
956a9202 RW |
56 | config XEN_PCIDEV_FRONTEND |
57 | tristate "Xen PCI Frontend" | |
58 | depends on PCI && X86 && XEN | |
59 | select HOTPLUG | |
60 | select PCI_XEN | |
fce263c1 | 61 | select XEN_XENBUS_FRONTEND |
956a9202 RW |
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 | ||
8b955b0d EB |
67 | config HT_IRQ |
68 | bool "Interrupts on hypertransport devices" | |
69 | default y | |
fbab41cc | 70 | depends on PCI && X86_LOCAL_APIC && X86_IO_APIC |
8b955b0d EB |
71 | help |
72 | This allows native hypertransport devices to use interrupts. | |
73 | ||
74 | If unsure say Y. | |
d1b054da | 75 | |
db3c33c6 JR |
76 | config PCI_ATS |
77 | bool | |
78 | ||
d1b054da YZ |
79 | config PCI_IOV |
80 | bool "PCI IOV support" | |
81 | depends on PCI | |
db3c33c6 | 82 | select PCI_ATS |
d1b054da YZ |
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. | |
204d49a5 | 89 | |
c320b976 JR |
90 | config PCI_PRI |
91 | bool "PCI PRI support" | |
c54420d3 | 92 | depends on PCI |
c320b976 JR |
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 | ||
086ac11f JR |
100 | config 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 | ||
204d49a5 | 113 | config PCI_IOAPIC |
b95a7bd7 | 114 | tristate "PCI IO-APIC hotplug support" if X86 |
204d49a5 BH |
115 | depends on PCI |
116 | depends on ACPI | |
117 | depends on HOTPLUG | |
b95a7bd7 | 118 | default !X86 |
6058989b | 119 | |
8a226e00 RD |
120 | config PCI_LABEL |
121 | def_bool y if (DMI || ACPI) | |
122 | select NLS |