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Commit | Line | Data |
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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 | ||
c70e0d9d CW |
34 | config PCI_STUB |
35 | tristate "PCI Stub driver" | |
36 | depends on PCI | |
37 | help | |
38 | Say Y or M here if you want be able to reserve a PCI device | |
39 | when it is going to be assigned to a guest operating system. | |
40 | ||
41 | When in doubt, say N. | |
42 | ||
956a9202 RW |
43 | config XEN_PCIDEV_FRONTEND |
44 | tristate "Xen PCI Frontend" | |
45 | depends on PCI && X86 && XEN | |
46 | select HOTPLUG | |
47 | select PCI_XEN | |
fce263c1 | 48 | select XEN_XENBUS_FRONTEND |
956a9202 RW |
49 | default y |
50 | help | |
51 | The PCI device frontend driver allows the kernel to import arbitrary | |
52 | PCI devices from a PCI backend to support PCI driver domains. | |
53 | ||
8b955b0d EB |
54 | config HT_IRQ |
55 | bool "Interrupts on hypertransport devices" | |
56 | default y | |
fbab41cc | 57 | depends on PCI && X86_LOCAL_APIC && X86_IO_APIC |
8b955b0d EB |
58 | help |
59 | This allows native hypertransport devices to use interrupts. | |
60 | ||
61 | If unsure say Y. | |
d1b054da | 62 | |
db3c33c6 JR |
63 | config PCI_ATS |
64 | bool | |
65 | ||
d1b054da YZ |
66 | config PCI_IOV |
67 | bool "PCI IOV support" | |
68 | depends on PCI | |
db3c33c6 | 69 | select PCI_ATS |
d1b054da YZ |
70 | help |
71 | I/O Virtualization is a PCI feature supported by some devices | |
72 | which allows them to create virtual devices which share their | |
73 | physical resources. | |
74 | ||
75 | If unsure, say N. | |
204d49a5 | 76 | |
c320b976 JR |
77 | config PCI_PRI |
78 | bool "PCI PRI support" | |
c54420d3 | 79 | depends on PCI |
c320b976 JR |
80 | select PCI_ATS |
81 | help | |
82 | PRI is the PCI Page Request Interface. It allows PCI devices that are | |
83 | behind an IOMMU to recover from page faults. | |
84 | ||
85 | If unsure, say N. | |
86 | ||
086ac11f JR |
87 | config PCI_PASID |
88 | bool "PCI PASID support" | |
89 | depends on PCI | |
90 | select PCI_ATS | |
91 | help | |
92 | Process Address Space Identifiers (PASIDs) can be used by PCI devices | |
93 | to access more than one IO address space at the same time. To make | |
94 | use of this feature an IOMMU is required which also supports PASIDs. | |
95 | Select this option if you have such an IOMMU and want to compile the | |
96 | driver for it into your kernel. | |
97 | ||
98 | If unsure, say N. | |
99 | ||
204d49a5 | 100 | config PCI_IOAPIC |
b95a7bd7 | 101 | tristate "PCI IO-APIC hotplug support" if X86 |
204d49a5 BH |
102 | depends on PCI |
103 | depends on ACPI | |
104 | depends on HOTPLUG | |
b95a7bd7 | 105 | default !X86 |
6058989b | 106 | |
8a226e00 RD |
107 | config PCI_LABEL |
108 | def_bool y if (DMI || ACPI) | |
109 | select NLS |