Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | # |
| 2 | # PCI configuration |
| 3 | # |
| 4 | config PCI_MSI |
| 5 | bool "Message Signaled Interrupts (MSI and MSI-X)" |
| 6 | depends on PCI |
Jiang Liu | 38b6a1c | 2014-11-12 12:11:25 +0100 | [diff] [blame^] | 7 | select GENERIC_MSI_IRQ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | help |
| 9 | This allows device drivers to enable MSI (Message Signaled |
| 10 | Interrupts). Message Signaled Interrupts enable a device to |
| 11 | generate an interrupt using an inbound Memory Write on its |
| 12 | PCI bus instead of asserting a device IRQ pin. |
| 13 | |
Matthew Wilcox | 309e57d | 2006-03-05 22:33:34 -0700 | [diff] [blame] | 14 | Use of PCI MSI interrupts can be disabled at kernel boot time |
| 15 | by using the 'pci=nomsi' option. This disables MSI for the |
| 16 | entire system. |
| 17 | |
Jesse Barnes | 3196180 | 2010-04-08 09:38:47 -0700 | [diff] [blame] | 18 | If you don't know what to do here, say Y. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | config PCI_DEBUG |
| 21 | bool "PCI Debugging" |
| 22 | depends on PCI && DEBUG_KERNEL |
| 23 | help |
| 24 | Say Y here if you want the PCI core to produce a bunch of debug |
| 25 | messages to the system log. Select this if you are having a |
| 26 | problem with PCI support and want to see more of what is going on. |
| 27 | |
| 28 | When in doubt, say N. |
| 29 | |
Yinghai Lu | b07f2eb | 2012-02-23 19:23:32 -0800 | [diff] [blame] | 30 | config PCI_REALLOC_ENABLE_AUTO |
| 31 | bool "Enable PCI resource re-allocation detection" |
| 32 | depends on PCI |
| 33 | help |
| 34 | Say Y here if you want the PCI core to detect if PCI resource |
| 35 | re-allocation needs to be enabled. You can always use pci=realloc=on |
| 36 | or pci=realloc=off to override it. Note this feature is a no-op |
| 37 | unless PCI_IOV support is also enabled; in that case it will |
| 38 | automatically re-allocate PCI resources if SR-IOV BARs have not |
| 39 | been allocated by the BIOS. |
| 40 | |
| 41 | When in doubt, say N. |
| 42 | |
Chris Wright | c70e0d9 | 2008-11-25 21:17:13 -0800 | [diff] [blame] | 43 | config PCI_STUB |
| 44 | tristate "PCI Stub driver" |
| 45 | depends on PCI |
| 46 | help |
| 47 | Say Y or M here if you want be able to reserve a PCI device |
| 48 | when it is going to be assigned to a guest operating system. |
| 49 | |
| 50 | When in doubt, say N. |
| 51 | |
Ryan Wilson | 956a920 | 2010-08-02 21:31:05 -0400 | [diff] [blame] | 52 | config XEN_PCIDEV_FRONTEND |
| 53 | tristate "Xen PCI Frontend" |
| 54 | depends on PCI && X86 && XEN |
Ryan Wilson | 956a920 | 2010-08-02 21:31:05 -0400 | [diff] [blame] | 55 | select PCI_XEN |
Konrad Rzeszutek Wilk | fce263c1 | 2010-12-10 22:33:15 -0500 | [diff] [blame] | 56 | select XEN_XENBUS_FRONTEND |
Ryan Wilson | 956a920 | 2010-08-02 21:31:05 -0400 | [diff] [blame] | 57 | default y |
| 58 | help |
| 59 | The PCI device frontend driver allows the kernel to import arbitrary |
| 60 | PCI devices from a PCI backend to support PCI driver domains. |
| 61 | |
Eric W. Biederman | 8b955b0 | 2006-10-04 02:16:55 -0700 | [diff] [blame] | 62 | config HT_IRQ |
| 63 | bool "Interrupts on hypertransport devices" |
| 64 | default y |
Adrian Bunk | fbab41c | 2006-10-11 01:22:04 -0700 | [diff] [blame] | 65 | depends on PCI && X86_LOCAL_APIC && X86_IO_APIC |
Eric W. Biederman | 8b955b0 | 2006-10-04 02:16:55 -0700 | [diff] [blame] | 66 | help |
| 67 | This allows native hypertransport devices to use interrupts. |
| 68 | |
| 69 | If unsure say Y. |
Yu Zhao | d1b054d | 2009-03-20 11:25:11 +0800 | [diff] [blame] | 70 | |
Joerg Roedel | db3c33c | 2011-09-27 15:57:13 +0200 | [diff] [blame] | 71 | config PCI_ATS |
| 72 | bool |
| 73 | |
Yu Zhao | d1b054d | 2009-03-20 11:25:11 +0800 | [diff] [blame] | 74 | config PCI_IOV |
| 75 | bool "PCI IOV support" |
| 76 | depends on PCI |
Joerg Roedel | db3c33c | 2011-09-27 15:57:13 +0200 | [diff] [blame] | 77 | select PCI_ATS |
Yu Zhao | d1b054d | 2009-03-20 11:25:11 +0800 | [diff] [blame] | 78 | help |
| 79 | I/O Virtualization is a PCI feature supported by some devices |
| 80 | which allows them to create virtual devices which share their |
| 81 | physical resources. |
| 82 | |
| 83 | If unsure, say N. |
Bjorn Helgaas | 204d49a | 2009-10-26 11:20:47 -0600 | [diff] [blame] | 84 | |
Joerg Roedel | c320b97 | 2011-09-27 15:57:15 +0200 | [diff] [blame] | 85 | config PCI_PRI |
| 86 | bool "PCI PRI support" |
Joerg Roedel | c54420d | 2011-10-30 16:35:07 +0100 | [diff] [blame] | 87 | depends on PCI |
Joerg Roedel | c320b97 | 2011-09-27 15:57:15 +0200 | [diff] [blame] | 88 | select PCI_ATS |
| 89 | help |
| 90 | PRI is the PCI Page Request Interface. It allows PCI devices that are |
| 91 | behind an IOMMU to recover from page faults. |
| 92 | |
| 93 | If unsure, say N. |
| 94 | |
Joerg Roedel | 086ac11 | 2011-09-27 15:57:16 +0200 | [diff] [blame] | 95 | config PCI_PASID |
| 96 | bool "PCI PASID support" |
| 97 | depends on PCI |
| 98 | select PCI_ATS |
| 99 | help |
| 100 | Process Address Space Identifiers (PASIDs) can be used by PCI devices |
| 101 | to access more than one IO address space at the same time. To make |
| 102 | use of this feature an IOMMU is required which also supports PASIDs. |
| 103 | Select this option if you have such an IOMMU and want to compile the |
| 104 | driver for it into your kernel. |
| 105 | |
| 106 | If unsure, say N. |
| 107 | |
Bjorn Helgaas | 204d49a | 2009-10-26 11:20:47 -0600 | [diff] [blame] | 108 | config PCI_IOAPIC |
Yinghai Lu | 7741043 | 2014-01-02 16:05:57 -0800 | [diff] [blame] | 109 | bool "PCI IO-APIC hotplug support" if X86 |
Bjorn Helgaas | 204d49a | 2009-10-26 11:20:47 -0600 | [diff] [blame] | 110 | depends on PCI |
| 111 | depends on ACPI |
Yinghai Lu | 7741043 | 2014-01-02 16:05:57 -0800 | [diff] [blame] | 112 | depends on X86_IO_APIC |
Jan Beulich | b95a7bd | 2011-12-06 07:49:30 +0000 | [diff] [blame] | 113 | default !X86 |
Narendra_K@Dell.com | 6058989 | 2011-03-02 22:34:17 +0530 | [diff] [blame] | 114 | |
Randy Dunlap | 8a226e0 | 2011-03-29 09:45:57 -0700 | [diff] [blame] | 115 | config PCI_LABEL |
| 116 | def_bool y if (DMI || ACPI) |
| 117 | select NLS |
Thomas Petazzoni | 45361a4 | 2013-05-16 17:55:22 +0200 | [diff] [blame] | 118 | |
| 119 | source "drivers/pci/host/Kconfig" |