Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | # |
| 2 | # PCI configuration |
| 3 | # |
Dan Williams | f282b97 | 2007-04-18 18:46:20 +1000 | [diff] [blame] | 4 | config ARCH_SUPPORTS_MSI |
| 5 | bool |
| 6 | default n |
| 7 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | config PCI_MSI |
| 9 | bool "Message Signaled Interrupts (MSI and MSI-X)" |
| 10 | depends on PCI |
Dan Williams | f282b97 | 2007-04-18 18:46:20 +1000 | [diff] [blame] | 11 | depends on ARCH_SUPPORTS_MSI |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Matthew Wilcox | 309e57d | 2006-03-05 22:33:34 -0700 | [diff] [blame] | 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 | |
Jesse Barnes | 3196180 | 2010-04-08 09:38:47 -0700 | [diff] [blame] | 22 | If you don't know what to do here, say Y. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Chris Wright | c70e0d9 | 2008-11-25 21:17:13 -0800 | [diff] [blame] | 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 | |
Ryan Wilson | 956a920 | 2010-08-02 21:31:05 -0400 | [diff] [blame] | 43 | config XEN_PCIDEV_FRONTEND |
| 44 | tristate "Xen PCI Frontend" |
| 45 | depends on PCI && X86 && XEN |
| 46 | select HOTPLUG |
| 47 | select PCI_XEN |
Konrad Rzeszutek Wilk | fce263c | 2010-12-10 22:33:15 -0500 | [diff] [blame] | 48 | select XEN_XENBUS_FRONTEND |
Ryan Wilson | 956a920 | 2010-08-02 21:31:05 -0400 | [diff] [blame] | 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 | |
Eric W. Biederman | 8b955b0 | 2006-10-04 02:16:55 -0700 | [diff] [blame] | 65 | config HT_IRQ |
| 66 | bool "Interrupts on hypertransport devices" |
| 67 | default y |
Adrian Bunk | fbab41c | 2006-10-11 01:22:04 -0700 | [diff] [blame] | 68 | depends on PCI && X86_LOCAL_APIC && X86_IO_APIC |
Eric W. Biederman | 8b955b0 | 2006-10-04 02:16:55 -0700 | [diff] [blame] | 69 | help |
| 70 | This allows native hypertransport devices to use interrupts. |
| 71 | |
| 72 | If unsure say Y. |
Yu Zhao | d1b054d | 2009-03-20 11:25:11 +0800 | [diff] [blame] | 73 | |
Joerg Roedel | db3c33c | 2011-09-27 15:57:13 +0200 | [diff] [blame] | 74 | config PCI_ATS |
| 75 | bool |
| 76 | |
Yu Zhao | d1b054d | 2009-03-20 11:25:11 +0800 | [diff] [blame] | 77 | config PCI_IOV |
| 78 | bool "PCI IOV support" |
| 79 | depends on PCI |
Joerg Roedel | db3c33c | 2011-09-27 15:57:13 +0200 | [diff] [blame] | 80 | select PCI_ATS |
Yu Zhao | d1b054d | 2009-03-20 11:25:11 +0800 | [diff] [blame] | 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. |
Bjorn Helgaas | 204d49a | 2009-10-26 11:20:47 -0600 | [diff] [blame] | 87 | |
Joerg Roedel | c320b97 | 2011-09-27 15:57:15 +0200 | [diff] [blame] | 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 | |
Joerg Roedel | 086ac11 | 2011-09-27 15:57:16 +0200 | [diff] [blame^] | 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 | |
Bjorn Helgaas | 204d49a | 2009-10-26 11:20:47 -0600 | [diff] [blame] | 110 | config PCI_IOAPIC |
| 111 | bool |
| 112 | depends on PCI |
| 113 | depends on ACPI |
| 114 | depends on HOTPLUG |
| 115 | default y |
Narendra_K@Dell.com | 6058989 | 2011-03-02 22:34:17 +0530 | [diff] [blame] | 116 | |
Randy Dunlap | 8a226e0 | 2011-03-29 09:45:57 -0700 | [diff] [blame] | 117 | config PCI_LABEL |
| 118 | def_bool y if (DMI || ACPI) |
| 119 | select NLS |