1#
2# PCI configuration
3#
4config ARCH_SUPPORTS_MSI
5	bool
6	default n
7
8config PCI_MSI
9	bool "Message Signaled Interrupts (MSI and MSI-X)"
10	depends on PCI
11	depends on ARCH_SUPPORTS_MSI
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
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
22	   If you don't know what to do here, say Y.
23
24config 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
34config 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
43config XEN_PCIDEV_FRONTEND
44        tristate "Xen PCI Frontend"
45        depends on PCI && X86 && XEN
46        select HOTPLUG
47        select PCI_XEN
48	select XEN_XENBUS_FRONTEND
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
54config XEN_PCIDEV_FE_DEBUG
55        bool "Xen PCI Frontend debugging"
56        depends on XEN_PCIDEV_FRONTEND && PCI_DEBUG
57	help
58	  Say Y here if you want the Xen PCI frontend to produce a bunch of debug
59	  messages to the system log.  Select this if you are having a
60	  problem with Xen PCI frontend support and want to see more of what is
61	  going on.
62
63	  When in doubt, say N.
64
65config HT_IRQ
66	bool "Interrupts on hypertransport devices"
67	default y
68	depends on PCI && X86_LOCAL_APIC && X86_IO_APIC
69	help
70	   This allows native hypertransport devices to use interrupts.
71
72	   If unsure say Y.
73
74config PCI_IOV
75	bool "PCI IOV support"
76	depends on PCI
77	help
78	  I/O Virtualization is a PCI feature supported by some devices
79	  which allows them to create virtual devices which share their
80	  physical resources.
81
82	  If unsure, say N.
83
84config PCI_IOAPIC
85	bool
86	depends on PCI
87	depends on ACPI
88	depends on HOTPLUG
89	default y
90
91config PCI_LABEL
92	def_bool y if (DMI || ACPI)
93	select NLS
94