Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | # |
2 | # PCI configuration | |
3 | # | |
3a9ad0b4 | 4 | config PCI_BUS_ADDR_T_64BIT |
e02a653e | 5 | def_bool y if (ARCH_DMA_ADDR_T_64BIT || 64BIT) |
3a9ad0b4 YL |
6 | depends on PCI |
7 | ||
1da177e4 LT |
8 | config PCI_MSI |
9 | bool "Message Signaled Interrupts (MSI and MSI-X)" | |
10 | depends on PCI | |
38b6a1cf | 11 | select GENERIC_MSI_IRQ |
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 | |
3878eaef JL |
24 | config PCI_MSI_IRQ_DOMAIN |
25 | bool | |
26 | depends on PCI_MSI | |
27 | select GENERIC_MSI_IRQ_DOMAIN | |
28 | ||
1da177e4 LT |
29 | config PCI_DEBUG |
30 | bool "PCI Debugging" | |
31 | depends on PCI && DEBUG_KERNEL | |
32 | help | |
33 | Say Y here if you want the PCI core to produce a bunch of debug | |
34 | messages to the system log. Select this if you are having a | |
35 | problem with PCI support and want to see more of what is going on. | |
36 | ||
37 | When in doubt, say N. | |
38 | ||
b07f2ebc YL |
39 | config PCI_REALLOC_ENABLE_AUTO |
40 | bool "Enable PCI resource re-allocation detection" | |
41 | depends on PCI | |
42 | help | |
43 | Say Y here if you want the PCI core to detect if PCI resource | |
44 | re-allocation needs to be enabled. You can always use pci=realloc=on | |
45 | or pci=realloc=off to override it. Note this feature is a no-op | |
46 | unless PCI_IOV support is also enabled; in that case it will | |
47 | automatically re-allocate PCI resources if SR-IOV BARs have not | |
48 | been allocated by the BIOS. | |
49 | ||
50 | When in doubt, say N. | |
51 | ||
c70e0d9d CW |
52 | config PCI_STUB |
53 | tristate "PCI Stub driver" | |
54 | depends on PCI | |
55 | help | |
56 | Say Y or M here if you want be able to reserve a PCI device | |
57 | when it is going to be assigned to a guest operating system. | |
58 | ||
59 | When in doubt, say N. | |
60 | ||
956a9202 RW |
61 | config XEN_PCIDEV_FRONTEND |
62 | tristate "Xen PCI Frontend" | |
63 | depends on PCI && X86 && XEN | |
956a9202 | 64 | select PCI_XEN |
fce263c1 | 65 | select XEN_XENBUS_FRONTEND |
956a9202 RW |
66 | default y |
67 | help | |
68 | The PCI device frontend driver allows the kernel to import arbitrary | |
69 | PCI devices from a PCI backend to support PCI driver domains. | |
70 | ||
8b955b0d EB |
71 | config HT_IRQ |
72 | bool "Interrupts on hypertransport devices" | |
73 | default y | |
2f600025 | 74 | depends on PCI && X86_LOCAL_APIC |
8b955b0d EB |
75 | help |
76 | This allows native hypertransport devices to use interrupts. | |
77 | ||
78 | If unsure say Y. | |
d1b054da | 79 | |
db3c33c6 JR |
80 | config PCI_ATS |
81 | bool | |
82 | ||
d1b054da YZ |
83 | config PCI_IOV |
84 | bool "PCI IOV support" | |
85 | depends on PCI | |
db3c33c6 | 86 | select PCI_ATS |
d1b054da YZ |
87 | help |
88 | I/O Virtualization is a PCI feature supported by some devices | |
89 | which allows them to create virtual devices which share their | |
90 | physical resources. | |
91 | ||
92 | If unsure, say N. | |
204d49a5 | 93 | |
c320b976 JR |
94 | config PCI_PRI |
95 | bool "PCI PRI support" | |
c54420d3 | 96 | depends on PCI |
c320b976 JR |
97 | select PCI_ATS |
98 | help | |
99 | PRI is the PCI Page Request Interface. It allows PCI devices that are | |
100 | behind an IOMMU to recover from page faults. | |
101 | ||
102 | If unsure, say N. | |
103 | ||
086ac11f JR |
104 | config PCI_PASID |
105 | bool "PCI PASID support" | |
106 | depends on PCI | |
107 | select PCI_ATS | |
108 | help | |
109 | Process Address Space Identifiers (PASIDs) can be used by PCI devices | |
110 | to access more than one IO address space at the same time. To make | |
111 | use of this feature an IOMMU is required which also supports PASIDs. | |
112 | Select this option if you have such an IOMMU and want to compile the | |
113 | driver for it into your kernel. | |
114 | ||
115 | If unsure, say N. | |
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" |