1# 2# PCI configuration 3# 4 5source "drivers/pci/pcie/Kconfig" 6 7config PCI_BUS_ADDR_T_64BIT 8 def_bool y if (ARCH_DMA_ADDR_T_64BIT || 64BIT) 9 depends on PCI 10 11config PCI_MSI 12 bool "Message Signaled Interrupts (MSI and MSI-X)" 13 depends on PCI 14 select GENERIC_MSI_IRQ 15 help 16 This allows device drivers to enable MSI (Message Signaled 17 Interrupts). Message Signaled Interrupts enable a device to 18 generate an interrupt using an inbound Memory Write on its 19 PCI bus instead of asserting a device IRQ pin. 20 21 Use of PCI MSI interrupts can be disabled at kernel boot time 22 by using the 'pci=nomsi' option. This disables MSI for the 23 entire system. 24 25 If you don't know what to do here, say Y. 26 27config PCI_MSI_IRQ_DOMAIN 28 def_bool ARC || ARM || ARM64 || X86 29 depends on PCI_MSI 30 select GENERIC_MSI_IRQ_DOMAIN 31 32config PCI_DEBUG 33 bool "PCI Debugging" 34 depends on PCI && DEBUG_KERNEL 35 help 36 Say Y here if you want the PCI core to produce a bunch of debug 37 messages to the system log. Select this if you are having a 38 problem with PCI support and want to see more of what is going on. 39 40 When in doubt, say N. 41 42config PCI_REALLOC_ENABLE_AUTO 43 bool "Enable PCI resource re-allocation detection" 44 depends on PCI 45 help 46 Say Y here if you want the PCI core to detect if PCI resource 47 re-allocation needs to be enabled. You can always use pci=realloc=on 48 or pci=realloc=off to override it. Note this feature is a no-op 49 unless PCI_IOV support is also enabled; in that case it will 50 automatically re-allocate PCI resources if SR-IOV BARs have not 51 been allocated by the BIOS. 52 53 When in doubt, say N. 54 55config PCI_STUB 56 tristate "PCI Stub driver" 57 depends on PCI 58 help 59 Say Y or M here if you want be able to reserve a PCI device 60 when it is going to be assigned to a guest operating system. 61 62 When in doubt, say N. 63 64config XEN_PCIDEV_FRONTEND 65 tristate "Xen PCI Frontend" 66 depends on PCI && X86 && XEN 67 select PCI_XEN 68 select XEN_XENBUS_FRONTEND 69 default y 70 help 71 The PCI device frontend driver allows the kernel to import arbitrary 72 PCI devices from a PCI backend to support PCI driver domains. 73 74config HT_IRQ 75 bool "Interrupts on hypertransport devices" 76 default y 77 depends on PCI && X86_LOCAL_APIC 78 help 79 This allows native hypertransport devices to use interrupts. 80 81 If unsure say Y. 82 83config PCI_ATS 84 bool 85 86config PCI_ECAM 87 bool 88 89config PCI_IOV 90 bool "PCI IOV support" 91 depends on PCI 92 select PCI_ATS 93 help 94 I/O Virtualization is a PCI feature supported by some devices 95 which allows them to create virtual devices which share their 96 physical resources. 97 98 If unsure, say N. 99 100config PCI_PRI 101 bool "PCI PRI support" 102 depends on PCI 103 select PCI_ATS 104 help 105 PRI is the PCI Page Request Interface. It allows PCI devices that are 106 behind an IOMMU to recover from page faults. 107 108 If unsure, say N. 109 110config PCI_PASID 111 bool "PCI PASID support" 112 depends on PCI 113 select PCI_ATS 114 help 115 Process Address Space Identifiers (PASIDs) can be used by PCI devices 116 to access more than one IO address space at the same time. To make 117 use of this feature an IOMMU is required which also supports PASIDs. 118 Select this option if you have such an IOMMU and want to compile the 119 driver for it into your kernel. 120 121 If unsure, say N. 122 123config PCI_LABEL 124 def_bool y if (DMI || ACPI) 125 select NLS 126 127config PCI_HYPERV 128 tristate "Hyper-V PCI Frontend" 129 depends on PCI && X86 && HYPERV && PCI_MSI && PCI_MSI_IRQ_DOMAIN && X86_64 130 help 131 The PCI device frontend driver allows the kernel to import arbitrary 132 PCI devices from a PCI backend to support PCI driver domains. 133 134source "drivers/pci/hotplug/Kconfig" 135source "drivers/pci/dwc/Kconfig" 136source "drivers/pci/host/Kconfig" 137