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 548b955b0dSEric W. Biedermanconfig HT_IRQ 558b955b0dSEric W. Biederman bool "Interrupts on hypertransport devices" 568b955b0dSEric W. Biederman default y 57fbab41ccSAdrian Bunk depends on PCI && X86_LOCAL_APIC && X86_IO_APIC 588b955b0dSEric W. Biederman help 598b955b0dSEric W. Biederman This allows native hypertransport devices to use interrupts. 608b955b0dSEric W. Biederman 618b955b0dSEric W. Biederman If unsure say Y. 62d1b054daSYu Zhao 63db3c33c6SJoerg Roedelconfig PCI_ATS 64db3c33c6SJoerg Roedel bool 65db3c33c6SJoerg Roedel 66d1b054daSYu Zhaoconfig PCI_IOV 67d1b054daSYu Zhao bool "PCI IOV support" 68d1b054daSYu Zhao depends on PCI 69db3c33c6SJoerg Roedel select PCI_ATS 70d1b054daSYu Zhao help 71d1b054daSYu Zhao I/O Virtualization is a PCI feature supported by some devices 72d1b054daSYu Zhao which allows them to create virtual devices which share their 73d1b054daSYu Zhao physical resources. 74d1b054daSYu Zhao 75d1b054daSYu Zhao If unsure, say N. 76204d49a5SBjorn Helgaas 77c320b976SJoerg Roedelconfig PCI_PRI 78c320b976SJoerg Roedel bool "PCI PRI support" 79c54420d3SJoerg Roedel depends on PCI 80c320b976SJoerg Roedel select PCI_ATS 81c320b976SJoerg Roedel help 82c320b976SJoerg Roedel PRI is the PCI Page Request Interface. It allows PCI devices that are 83c320b976SJoerg Roedel behind an IOMMU to recover from page faults. 84c320b976SJoerg Roedel 85c320b976SJoerg Roedel If unsure, say N. 86c320b976SJoerg Roedel 87086ac11fSJoerg Roedelconfig PCI_PASID 88086ac11fSJoerg Roedel bool "PCI PASID support" 89086ac11fSJoerg Roedel depends on PCI 90086ac11fSJoerg Roedel select PCI_ATS 91086ac11fSJoerg Roedel help 92086ac11fSJoerg Roedel Process Address Space Identifiers (PASIDs) can be used by PCI devices 93086ac11fSJoerg Roedel to access more than one IO address space at the same time. To make 94086ac11fSJoerg Roedel use of this feature an IOMMU is required which also supports PASIDs. 95086ac11fSJoerg Roedel Select this option if you have such an IOMMU and want to compile the 96086ac11fSJoerg Roedel driver for it into your kernel. 97086ac11fSJoerg Roedel 98086ac11fSJoerg Roedel If unsure, say N. 99086ac11fSJoerg Roedel 100204d49a5SBjorn Helgaasconfig PCI_IOAPIC 101*b95a7bd7SJan Beulich tristate "PCI IO-APIC hotplug support" if X86 102204d49a5SBjorn Helgaas depends on PCI 103204d49a5SBjorn Helgaas depends on ACPI 104204d49a5SBjorn Helgaas depends on HOTPLUG 105*b95a7bd7SJan Beulich default !X86 1066058989bSNarendra_K@Dell.com 1078a226e00SRandy Dunlapconfig PCI_LABEL 1088a226e00SRandy Dunlap def_bool y if (DMI || ACPI) 1098a226e00SRandy Dunlap select NLS 110