11da177e4SLinus Torvalds# 21da177e4SLinus Torvalds# PCI configuration 31da177e4SLinus Torvalds# 4*5f8fc432SBogicevic Sasa 5*5f8fc432SBogicevic Sasasource "drivers/pci/pcie/Kconfig" 6*5f8fc432SBogicevic Sasa 73a9ad0b4SYinghai Luconfig PCI_BUS_ADDR_T_64BIT 8e02a653eSHelge Deller def_bool y if (ARCH_DMA_ADDR_T_64BIT || 64BIT) 93a9ad0b4SYinghai Lu depends on PCI 103a9ad0b4SYinghai Lu 111da177e4SLinus Torvaldsconfig PCI_MSI 121da177e4SLinus Torvalds bool "Message Signaled Interrupts (MSI and MSI-X)" 131da177e4SLinus Torvalds depends on PCI 1438b6a1cfSJiang Liu select GENERIC_MSI_IRQ 151da177e4SLinus Torvalds help 161da177e4SLinus Torvalds This allows device drivers to enable MSI (Message Signaled 171da177e4SLinus Torvalds Interrupts). Message Signaled Interrupts enable a device to 181da177e4SLinus Torvalds generate an interrupt using an inbound Memory Write on its 191da177e4SLinus Torvalds PCI bus instead of asserting a device IRQ pin. 201da177e4SLinus Torvalds 21309e57dfSMatthew Wilcox Use of PCI MSI interrupts can be disabled at kernel boot time 22309e57dfSMatthew Wilcox by using the 'pci=nomsi' option. This disables MSI for the 23309e57dfSMatthew Wilcox entire system. 24309e57dfSMatthew Wilcox 253196180aSJesse Barnes If you don't know what to do here, say Y. 261da177e4SLinus Torvalds 273878eaefSJiang Liuconfig PCI_MSI_IRQ_DOMAIN 283878eaefSJiang Liu bool 293878eaefSJiang Liu depends on PCI_MSI 303878eaefSJiang Liu select GENERIC_MSI_IRQ_DOMAIN 313878eaefSJiang Liu 321da177e4SLinus Torvaldsconfig PCI_DEBUG 331da177e4SLinus Torvalds bool "PCI Debugging" 341da177e4SLinus Torvalds depends on PCI && DEBUG_KERNEL 351da177e4SLinus Torvalds help 361da177e4SLinus Torvalds Say Y here if you want the PCI core to produce a bunch of debug 371da177e4SLinus Torvalds messages to the system log. Select this if you are having a 381da177e4SLinus Torvalds problem with PCI support and want to see more of what is going on. 391da177e4SLinus Torvalds 401da177e4SLinus Torvalds When in doubt, say N. 411da177e4SLinus Torvalds 42b07f2ebcSYinghai Luconfig PCI_REALLOC_ENABLE_AUTO 43b07f2ebcSYinghai Lu bool "Enable PCI resource re-allocation detection" 44b07f2ebcSYinghai Lu depends on PCI 45b07f2ebcSYinghai Lu help 46b07f2ebcSYinghai Lu Say Y here if you want the PCI core to detect if PCI resource 47b07f2ebcSYinghai Lu re-allocation needs to be enabled. You can always use pci=realloc=on 48b07f2ebcSYinghai Lu or pci=realloc=off to override it. Note this feature is a no-op 49b07f2ebcSYinghai Lu unless PCI_IOV support is also enabled; in that case it will 50b07f2ebcSYinghai Lu automatically re-allocate PCI resources if SR-IOV BARs have not 51b07f2ebcSYinghai Lu been allocated by the BIOS. 52b07f2ebcSYinghai Lu 53b07f2ebcSYinghai Lu When in doubt, say N. 54b07f2ebcSYinghai Lu 55c70e0d9dSChris Wrightconfig PCI_STUB 56c70e0d9dSChris Wright tristate "PCI Stub driver" 57c70e0d9dSChris Wright depends on PCI 58c70e0d9dSChris Wright help 59c70e0d9dSChris Wright Say Y or M here if you want be able to reserve a PCI device 60c70e0d9dSChris Wright when it is going to be assigned to a guest operating system. 61c70e0d9dSChris Wright 62c70e0d9dSChris Wright When in doubt, say N. 63c70e0d9dSChris Wright 64956a9202SRyan Wilsonconfig XEN_PCIDEV_FRONTEND 65956a9202SRyan Wilson tristate "Xen PCI Frontend" 66956a9202SRyan Wilson depends on PCI && X86 && XEN 67956a9202SRyan Wilson select PCI_XEN 68fce263c1SKonrad Rzeszutek Wilk select XEN_XENBUS_FRONTEND 69956a9202SRyan Wilson default y 70956a9202SRyan Wilson help 71956a9202SRyan Wilson The PCI device frontend driver allows the kernel to import arbitrary 72956a9202SRyan Wilson PCI devices from a PCI backend to support PCI driver domains. 73956a9202SRyan Wilson 748b955b0dSEric W. Biedermanconfig HT_IRQ 758b955b0dSEric W. Biederman bool "Interrupts on hypertransport devices" 768b955b0dSEric W. Biederman default y 772f600025SJiang Liu depends on PCI && X86_LOCAL_APIC 788b955b0dSEric W. Biederman help 798b955b0dSEric W. Biederman This allows native hypertransport devices to use interrupts. 808b955b0dSEric W. Biederman 818b955b0dSEric W. Biederman If unsure say Y. 82d1b054daSYu Zhao 83db3c33c6SJoerg Roedelconfig PCI_ATS 84db3c33c6SJoerg Roedel bool 85db3c33c6SJoerg Roedel 86d1b054daSYu Zhaoconfig PCI_IOV 87d1b054daSYu Zhao bool "PCI IOV support" 88d1b054daSYu Zhao depends on PCI 89db3c33c6SJoerg Roedel select PCI_ATS 90d1b054daSYu Zhao help 91d1b054daSYu Zhao I/O Virtualization is a PCI feature supported by some devices 92d1b054daSYu Zhao which allows them to create virtual devices which share their 93d1b054daSYu Zhao physical resources. 94d1b054daSYu Zhao 95d1b054daSYu Zhao If unsure, say N. 96204d49a5SBjorn Helgaas 97c320b976SJoerg Roedelconfig PCI_PRI 98c320b976SJoerg Roedel bool "PCI PRI support" 99c54420d3SJoerg Roedel depends on PCI 100c320b976SJoerg Roedel select PCI_ATS 101c320b976SJoerg Roedel help 102c320b976SJoerg Roedel PRI is the PCI Page Request Interface. It allows PCI devices that are 103c320b976SJoerg Roedel behind an IOMMU to recover from page faults. 104c320b976SJoerg Roedel 105c320b976SJoerg Roedel If unsure, say N. 106c320b976SJoerg Roedel 107086ac11fSJoerg Roedelconfig PCI_PASID 108086ac11fSJoerg Roedel bool "PCI PASID support" 109086ac11fSJoerg Roedel depends on PCI 110086ac11fSJoerg Roedel select PCI_ATS 111086ac11fSJoerg Roedel help 112086ac11fSJoerg Roedel Process Address Space Identifiers (PASIDs) can be used by PCI devices 113086ac11fSJoerg Roedel to access more than one IO address space at the same time. To make 114086ac11fSJoerg Roedel use of this feature an IOMMU is required which also supports PASIDs. 115086ac11fSJoerg Roedel Select this option if you have such an IOMMU and want to compile the 116086ac11fSJoerg Roedel driver for it into your kernel. 117086ac11fSJoerg Roedel 118086ac11fSJoerg Roedel If unsure, say N. 119086ac11fSJoerg Roedel 1208a226e00SRandy Dunlapconfig PCI_LABEL 1218a226e00SRandy Dunlap def_bool y if (DMI || ACPI) 1228a226e00SRandy Dunlap select NLS 12345361a4fSThomas Petazzoni 12445361a4fSThomas Petazzonisource "drivers/pci/host/Kconfig" 125