[deliverable/linux.git] / drivers / pci / Kconfig

#
# PCI configuration
#
config ARCH_SUPPORTS_MSI
	bool
	default n

config PCI_MSI
	bool "Message Signaled Interrupts (MSI and MSI-X)"
	depends on PCI
	depends on ARCH_SUPPORTS_MSI
	help
	   This allows device drivers to enable MSI (Message Signaled
	   Interrupts).  Message Signaled Interrupts enable a device to
	   generate an interrupt using an inbound Memory Write on its
	   PCI bus instead of asserting a device IRQ pin.

	   Use of PCI MSI interrupts can be disabled at kernel boot time
	   by using the 'pci=nomsi' option.  This disables MSI for the
	   entire system.

	   If you don't know what to do here, say Y.

config PCI_DEBUG
	bool "PCI Debugging"
	depends on PCI && DEBUG_KERNEL
	help
	  Say Y here if you want the PCI core to produce a bunch of debug
	  messages to the system log.  Select this if you are having a
	  problem with PCI support and want to see more of what is going on.

	  When in doubt, say N.

config PCI_STUB
	tristate "PCI Stub driver"
	depends on PCI
	help
	  Say Y or M here if you want be able to reserve a PCI device
	  when it is going to be assigned to a guest operating system.

	  When in doubt, say N.

config XEN_PCIDEV_FRONTEND
        tristate "Xen PCI Frontend"
        depends on PCI && X86 && XEN
        select HOTPLUG
        select PCI_XEN
	select XEN_XENBUS_FRONTEND
        default y
        help
          The PCI device frontend driver allows the kernel to import arbitrary
          PCI devices from a PCI backend to support PCI driver domains.

config XEN_PCIDEV_FE_DEBUG
        bool "Xen PCI Frontend debugging"
        depends on XEN_PCIDEV_FRONTEND && PCI_DEBUG
	help
	  Say Y here if you want the Xen PCI frontend to produce a bunch of debug
	  messages to the system log.  Select this if you are having a
	  problem with Xen PCI frontend support and want to see more of what is
	  going on.

	  When in doubt, say N.

config HT_IRQ
	bool "Interrupts on hypertransport devices"
	default y
	depends on PCI && X86_LOCAL_APIC && X86_IO_APIC
	help
	   This allows native hypertransport devices to use interrupts.

	   If unsure say Y.

config PCI_ATS
	bool

config PCI_IOV
	bool "PCI IOV support"
	depends on PCI
	select PCI_ATS
	help
	  I/O Virtualization is a PCI feature supported by some devices
	  which allows them to create virtual devices which share their
	  physical resources.

	  If unsure, say N.

config PCI_PRI
	bool "PCI PRI support"
	select PCI_ATS
	help
	  PRI is the PCI Page Request Interface. It allows PCI devices that are
	  behind an IOMMU to recover from page faults.

	  If unsure, say N.

config PCI_PASID
	bool "PCI PASID support"
	depends on PCI
	select PCI_ATS
	help
	  Process Address Space Identifiers (PASIDs) can be used by PCI devices
	  to access more than one IO address space at the same time. To make
	  use of this feature an IOMMU is required which also supports PASIDs.
	  Select this option if you have such an IOMMU and want to compile the
	  driver for it into your kernel.

	  If unsure, say N.

config PCI_IOAPIC
	bool
	depends on PCI
	depends on ACPI
	depends on HOTPLUG
	default y

config PCI_LABEL
	def_bool y if (DMI || ACPI)
	select NLS
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
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
	54	config 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
8b955b0d EB	65	config HT_IRQ
	66	bool "Interrupts on hypertransport devices"
	67	default y
fbab41cc	68	depends on PCI && X86_LOCAL_APIC && X86_IO_APIC
8b955b0d EB	69	help
	70	This allows native hypertransport devices to use interrupts.
	71
	72	If unsure say Y.
d1b054da	73
db3c33c6 JR	74	config PCI_ATS
	75	bool
	76
d1b054da YZ	77	config PCI_IOV
	78	bool "PCI IOV support"
	79	depends on PCI
db3c33c6	80	select PCI_ATS
d1b054da YZ	81	help
	82	I/O Virtualization is a PCI feature supported by some devices
	83	which allows them to create virtual devices which share their
	84	physical resources.
	85
	86	If unsure, say N.
204d49a5	87
c320b976 JR	88	config PCI_PRI
	89	bool "PCI PRI support"
	90	select PCI_ATS
	91	help
	92	PRI is the PCI Page Request Interface. It allows PCI devices that are
	93	behind an IOMMU to recover from page faults.
	94
	95	If unsure, say N.
	96
086ac11f JR	97	config PCI_PASID
	98	bool "PCI PASID support"
	99	depends on PCI
	100	select PCI_ATS
	101	help
	102	Process Address Space Identifiers (PASIDs) can be used by PCI devices
	103	to access more than one IO address space at the same time. To make
	104	use of this feature an IOMMU is required which also supports PASIDs.
	105	Select this option if you have such an IOMMU and want to compile the
	106	driver for it into your kernel.
	107
	108	If unsure, say N.
	109
204d49a5 BH	110	config PCI_IOAPIC
	111	bool
	112	depends on PCI
	113	depends on ACPI
	114	depends on HOTPLUG
	115	default y
6058989b	116
8a226e00 RD	117	config PCI_LABEL
	118	def_bool y if (DMI \|\| ACPI)
	119	select NLS