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 Y. 23 24config 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 34config 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 43config XEN_PCIDEV_FRONTEND 44 tristate "Xen PCI Frontend" 45 depends on PCI && X86 && XEN 46 select HOTPLUG 47 select PCI_XEN 48 select XEN_XENBUS_FRONTEND 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 54config 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 65config HT_IRQ 66 bool "Interrupts on hypertransport devices" 67 default y 68 depends on PCI && X86_LOCAL_APIC && X86_IO_APIC 69 help 70 This allows native hypertransport devices to use interrupts. 71 72 If unsure say Y. 73 74config PCI_IOV 75 bool "PCI IOV support" 76 depends on PCI 77 help 78 I/O Virtualization is a PCI feature supported by some devices 79 which allows them to create virtual devices which share their 80 physical resources. 81 82 If unsure, say N. 83 84config PCI_IOAPIC 85 bool 86 depends on PCI 87 depends on ACPI 88 depends on HOTPLUG 89 default y 90 91config PCI_LABEL 92 def_bool y if (DMI || ACPI) 93 select NLS 94