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 N. 23 24config PCI_LEGACY 25 bool "Enable deprecated pci_find_* API" 26 depends on PCI 27 default y 28 help 29 Say Y here if you want to include support for the deprecated 30 pci_find_slot() and pci_find_device() APIs. Most drivers have 31 been converted over to using the proper hotplug APIs, so this 32 option serves to include/exclude only a few drivers that are 33 still using this API. 34 35config PCI_DEBUG 36 bool "PCI Debugging" 37 depends on PCI && DEBUG_KERNEL 38 help 39 Say Y here if you want the PCI core to produce a bunch of debug 40 messages to the system log. Select this if you are having a 41 problem with PCI support and want to see more of what is going on. 42 43 When in doubt, say N. 44 45config PCI_STUB 46 tristate "PCI Stub driver" 47 depends on PCI 48 help 49 Say Y or M here if you want be able to reserve a PCI device 50 when it is going to be assigned to a guest operating system. 51 52 When in doubt, say N. 53 54config HT_IRQ 55 bool "Interrupts on hypertransport devices" 56 default y 57 depends on PCI && X86_LOCAL_APIC && X86_IO_APIC 58 help 59 This allows native hypertransport devices to use interrupts. 60 61 If unsure say Y. 62 63config PCI_IOV 64 bool "PCI IOV support" 65 depends on PCI 66 help 67 I/O Virtualization is a PCI feature supported by some devices 68 which allows them to create virtual devices which share their 69 physical resources. 70 71 If unsure, say N. 72