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1 | # |
2 | # PCI configuration |
3 | # |
4 | config ARCH_SUPPORTS_MSI |
5 | bool |
6 | |
7 | config PCI_MSI |
8 | bool "Message Signaled Interrupts (MSI and MSI-X)" |
9 | depends on PCI |
10 | depends on ARCH_SUPPORTS_MSI |
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 | |
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 | |
21 | If you don't know what to do here, say Y. |
22 | |
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 | |
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 | |
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 | |
55 | config XEN_PCIDEV_FRONTEND |
56 | tristate "Xen PCI Frontend" |
57 | depends on PCI && X86 && XEN |
58 | select HOTPLUG |
59 | select PCI_XEN |
60 | select XEN_XENBUS_FRONTEND |
61 | default y |
62 | help |
63 | The PCI device frontend driver allows the kernel to import arbitrary |
64 | PCI devices from a PCI backend to support PCI driver domains. |
65 | |
66 | config HT_IRQ |
67 | bool "Interrupts on hypertransport devices" |
68 | default y |
69 | depends on PCI && X86_LOCAL_APIC && X86_IO_APIC |
70 | help |
71 | This allows native hypertransport devices to use interrupts. |
72 | |
73 | If unsure say Y. |
74 | |
75 | config PCI_ATS |
76 | bool |
77 | |
78 | config PCI_IOV |
79 | bool "PCI IOV support" |
80 | depends on PCI |
81 | select PCI_ATS |
82 | help |
83 | I/O Virtualization is a PCI feature supported by some devices |
84 | which allows them to create virtual devices which share their |
85 | physical resources. |
86 | |
87 | If unsure, say N. |
88 | |
89 | config PCI_PRI |
90 | bool "PCI PRI support" |
91 | depends on PCI |
92 | select PCI_ATS |
93 | help |
94 | PRI is the PCI Page Request Interface. It allows PCI devices that are |
95 | behind an IOMMU to recover from page faults. |
96 | |
97 | If unsure, say N. |
98 | |
99 | config PCI_PASID |
100 | bool "PCI PASID support" |
101 | depends on PCI |
102 | select PCI_ATS |
103 | help |
104 | Process Address Space Identifiers (PASIDs) can be used by PCI devices |
105 | to access more than one IO address space at the same time. To make |
106 | use of this feature an IOMMU is required which also supports PASIDs. |
107 | Select this option if you have such an IOMMU and want to compile the |
108 | driver for it into your kernel. |
109 | |
110 | If unsure, say N. |
111 | |
112 | config PCI_IOAPIC |
113 | tristate "PCI IO-APIC hotplug support" if X86 |
114 | depends on PCI |
115 | depends on ACPI |
116 | depends on HOTPLUG |
117 | default !X86 |
118 | |
119 | config PCI_LABEL |
120 | def_bool y if (DMI || ACPI) |
121 | select NLS |
122 |
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Tags:
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v2.6.34-rc5
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