11da177e4SLinus Torvalds# 21da177e4SLinus Torvalds# PCI configuration 31da177e4SLinus Torvalds# 4f282b970SDan Williamsconfig ARCH_SUPPORTS_MSI 5f282b970SDan Williams bool 6f282b970SDan Williams default n 7f282b970SDan Williams 81da177e4SLinus Torvaldsconfig PCI_MSI 91da177e4SLinus Torvalds bool "Message Signaled Interrupts (MSI and MSI-X)" 101da177e4SLinus Torvalds depends on PCI 11f282b970SDan Williams depends on ARCH_SUPPORTS_MSI 121da177e4SLinus Torvalds help 131da177e4SLinus Torvalds This allows device drivers to enable MSI (Message Signaled 141da177e4SLinus Torvalds Interrupts). Message Signaled Interrupts enable a device to 151da177e4SLinus Torvalds generate an interrupt using an inbound Memory Write on its 161da177e4SLinus Torvalds PCI bus instead of asserting a device IRQ pin. 171da177e4SLinus Torvalds 18309e57dfSMatthew Wilcox Use of PCI MSI interrupts can be disabled at kernel boot time 19309e57dfSMatthew Wilcox by using the 'pci=nomsi' option. This disables MSI for the 20309e57dfSMatthew Wilcox entire system. 21309e57dfSMatthew Wilcox 22*3196180aSJesse Barnes If you don't know what to do here, say Y. 231da177e4SLinus Torvalds 241da177e4SLinus Torvaldsconfig PCI_DEBUG 251da177e4SLinus Torvalds bool "PCI Debugging" 261da177e4SLinus Torvalds depends on PCI && DEBUG_KERNEL 271da177e4SLinus Torvalds help 281da177e4SLinus Torvalds Say Y here if you want the PCI core to produce a bunch of debug 291da177e4SLinus Torvalds messages to the system log. Select this if you are having a 301da177e4SLinus Torvalds problem with PCI support and want to see more of what is going on. 311da177e4SLinus Torvalds 321da177e4SLinus Torvalds When in doubt, say N. 331da177e4SLinus Torvalds 34c70e0d9dSChris Wrightconfig PCI_STUB 35c70e0d9dSChris Wright tristate "PCI Stub driver" 36c70e0d9dSChris Wright depends on PCI 37c70e0d9dSChris Wright help 38c70e0d9dSChris Wright Say Y or M here if you want be able to reserve a PCI device 39c70e0d9dSChris Wright when it is going to be assigned to a guest operating system. 40c70e0d9dSChris Wright 41c70e0d9dSChris Wright When in doubt, say N. 42c70e0d9dSChris Wright 438b955b0dSEric W. Biedermanconfig HT_IRQ 448b955b0dSEric W. Biederman bool "Interrupts on hypertransport devices" 458b955b0dSEric W. Biederman default y 46fbab41ccSAdrian Bunk depends on PCI && X86_LOCAL_APIC && X86_IO_APIC 478b955b0dSEric W. Biederman help 488b955b0dSEric W. Biederman This allows native hypertransport devices to use interrupts. 498b955b0dSEric W. Biederman 508b955b0dSEric W. Biederman If unsure say Y. 51d1b054daSYu Zhao 52d1b054daSYu Zhaoconfig PCI_IOV 53d1b054daSYu Zhao bool "PCI IOV support" 54d1b054daSYu Zhao depends on PCI 55d1b054daSYu Zhao help 56d1b054daSYu Zhao I/O Virtualization is a PCI feature supported by some devices 57d1b054daSYu Zhao which allows them to create virtual devices which share their 58d1b054daSYu Zhao physical resources. 59d1b054daSYu Zhao 60d1b054daSYu Zhao If unsure, say N. 61204d49a5SBjorn Helgaas 62204d49a5SBjorn Helgaasconfig PCI_IOAPIC 63204d49a5SBjorn Helgaas bool 64204d49a5SBjorn Helgaas depends on PCI 65204d49a5SBjorn Helgaas depends on ACPI 66204d49a5SBjorn Helgaas depends on HOTPLUG 67204d49a5SBjorn Helgaas default y 68