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 223196180aSJesse 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 43956a9202SRyan Wilsonconfig XEN_PCIDEV_FRONTEND 44956a9202SRyan Wilson tristate "Xen PCI Frontend" 45956a9202SRyan Wilson depends on PCI && X86 && XEN 46956a9202SRyan Wilson select HOTPLUG 47956a9202SRyan Wilson select PCI_XEN 48fce263c1SKonrad Rzeszutek Wilk select XEN_XENBUS_FRONTEND 49956a9202SRyan Wilson default y 50956a9202SRyan Wilson help 51956a9202SRyan Wilson The PCI device frontend driver allows the kernel to import arbitrary 52956a9202SRyan Wilson PCI devices from a PCI backend to support PCI driver domains. 53956a9202SRyan Wilson 54956a9202SRyan Wilsonconfig XEN_PCIDEV_FE_DEBUG 55956a9202SRyan Wilson bool "Xen PCI Frontend debugging" 56956a9202SRyan Wilson depends on XEN_PCIDEV_FRONTEND && PCI_DEBUG 57956a9202SRyan Wilson help 58956a9202SRyan Wilson Say Y here if you want the Xen PCI frontend to produce a bunch of debug 59956a9202SRyan Wilson messages to the system log. Select this if you are having a 60956a9202SRyan Wilson problem with Xen PCI frontend support and want to see more of what is 61956a9202SRyan Wilson going on. 62956a9202SRyan Wilson 63956a9202SRyan Wilson When in doubt, say N. 64956a9202SRyan Wilson 658b955b0dSEric W. Biedermanconfig HT_IRQ 668b955b0dSEric W. Biederman bool "Interrupts on hypertransport devices" 678b955b0dSEric W. Biederman default y 68fbab41ccSAdrian Bunk depends on PCI && X86_LOCAL_APIC && X86_IO_APIC 698b955b0dSEric W. Biederman help 708b955b0dSEric W. Biederman This allows native hypertransport devices to use interrupts. 718b955b0dSEric W. Biederman 728b955b0dSEric W. Biederman If unsure say Y. 73d1b054daSYu Zhao 74db3c33c6SJoerg Roedelconfig PCI_ATS 75db3c33c6SJoerg Roedel bool 76db3c33c6SJoerg Roedel 77d1b054daSYu Zhaoconfig PCI_IOV 78d1b054daSYu Zhao bool "PCI IOV support" 79d1b054daSYu Zhao depends on PCI 80db3c33c6SJoerg Roedel select PCI_ATS 81d1b054daSYu Zhao help 82d1b054daSYu Zhao I/O Virtualization is a PCI feature supported by some devices 83d1b054daSYu Zhao which allows them to create virtual devices which share their 84d1b054daSYu Zhao physical resources. 85d1b054daSYu Zhao 86d1b054daSYu Zhao If unsure, say N. 87204d49a5SBjorn Helgaas 88c320b976SJoerg Roedelconfig PCI_PRI 89c320b976SJoerg Roedel bool "PCI PRI support" 90c320b976SJoerg Roedel select PCI_ATS 91c320b976SJoerg Roedel help 92c320b976SJoerg Roedel PRI is the PCI Page Request Interface. It allows PCI devices that are 93c320b976SJoerg Roedel behind an IOMMU to recover from page faults. 94c320b976SJoerg Roedel 95c320b976SJoerg Roedel If unsure, say N. 96c320b976SJoerg Roedel 97204d49a5SBjorn Helgaasconfig PCI_IOAPIC 98204d49a5SBjorn Helgaas bool 99204d49a5SBjorn Helgaas depends on PCI 100204d49a5SBjorn Helgaas depends on ACPI 101204d49a5SBjorn Helgaas depends on HOTPLUG 102204d49a5SBjorn Helgaas default y 1036058989bSNarendra_K@Dell.com 1048a226e00SRandy Dunlapconfig PCI_LABEL 1058a226e00SRandy Dunlap def_bool y if (DMI || ACPI) 1068a226e00SRandy Dunlap select NLS 107