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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 | # SPDX-License-Identifier: GPL-2.0 # # PCI configuration # # select this to offer the PCI prompt config HAVE_PCI bool # select this to unconditionally force on PCI support config FORCE_PCI bool select HAVE_PCI select PCI menuconfig PCI bool "PCI support" depends on HAVE_PCI help This option enables support for the PCI local bus, including support for PCI-X and the foundations for PCI Express support. Say 'Y' here unless you know what you are doing. if PCI config PCI_DOMAINS bool depends on PCI config PCI_DOMAINS_GENERIC bool select PCI_DOMAINS config PCI_SYSCALL bool source "drivers/pci/pcie/Kconfig" config PCI_MSI bool "Message Signaled Interrupts (MSI and MSI-X)" select GENERIC_MSI_IRQ help This allows device drivers to enable MSI (Message Signaled Interrupts). Message Signaled Interrupts enable a device to generate an interrupt using an inbound Memory Write on its PCI bus instead of asserting a device IRQ pin. Use of PCI MSI interrupts can be disabled at kernel boot time by using the 'pci=nomsi' option. This disables MSI for the entire system. If you don't know what to do here, say Y. config PCI_MSI_IRQ_DOMAIN def_bool ARC || ARM || ARM64 || X86 || RISCV depends on PCI_MSI select GENERIC_MSI_IRQ_DOMAIN config PCI_QUIRKS default y bool "Enable PCI quirk workarounds" if EXPERT help This enables workarounds for various PCI chipset bugs/quirks. Disable this only if your target machine is unaffected by PCI quirks. config PCI_DEBUG bool "PCI Debugging" depends on DEBUG_KERNEL help Say Y here if you want the PCI core to produce a bunch of debug messages to the system log. Select this if you are having a problem with PCI support and want to see more of what is going on. When in doubt, say N. config PCI_REALLOC_ENABLE_AUTO bool "Enable PCI resource re-allocation detection" depends on PCI_IOV help Say Y here if you want the PCI core to detect if PCI resource re-allocation needs to be enabled. You can always use pci=realloc=on or pci=realloc=off to override it. It will automatically re-allocate PCI resources if SR-IOV BARs have not been allocated by the BIOS. When in doubt, say N. config PCI_STUB tristate "PCI Stub driver" help Say Y or M here if you want be able to reserve a PCI device when it is going to be assigned to a guest operating system. When in doubt, say N. config PCI_PF_STUB tristate "PCI PF Stub driver" depends on PCI_IOV help Say Y or M here if you want to enable support for devices that require SR-IOV support, while at the same time the PF (Physical Function) itself is not providing any actual services on the host itself such as storage or networking. When in doubt, say N. config XEN_PCIDEV_FRONTEND tristate "Xen PCI Frontend" depends on X86 && XEN select PCI_XEN select XEN_XENBUS_FRONTEND default y help The PCI device frontend driver allows the kernel to import arbitrary PCI devices from a PCI backend to support PCI driver domains. config PCI_ATS bool config PCI_ECAM bool config PCI_LOCKLESS_CONFIG bool config PCI_BRIDGE_EMUL bool config PCI_IOV bool "PCI IOV support" select PCI_ATS help I/O Virtualization is a PCI feature supported by some devices which allows them to create virtual devices which share their physical resources. If unsure, say N. config PCI_PRI bool "PCI PRI support" select PCI_ATS help PRI is the PCI Page Request Interface. It allows PCI devices that are behind an IOMMU to recover from page faults. If unsure, say N. config PCI_PASID bool "PCI PASID support" select PCI_ATS help Process Address Space Identifiers (PASIDs) can be used by PCI devices to access more than one IO address space at the same time. To make use of this feature an IOMMU is required which also supports PASIDs. Select this option if you have such an IOMMU and want to compile the driver for it into your kernel. If unsure, say N. config PCI_P2PDMA bool "PCI peer-to-peer transfer support" depends on ZONE_DEVICE select GENERIC_ALLOCATOR help Enableѕ drivers to do PCI peer-to-peer transactions to and from BARs that are exposed in other devices that are the part of the hierarchy where peer-to-peer DMA is guaranteed by the PCI specification to work (ie. anything below a single PCI bridge). Many PCIe root complexes do not support P2P transactions and it's hard to tell which support it at all, so at this time, P2P DMA transactions must be between devices behind the same root port. If unsure, say N. config PCI_LABEL def_bool y if (DMI || ACPI) select NLS config PCI_HYPERV tristate "Hyper-V PCI Frontend" depends on X86_64 && HYPERV && PCI_MSI && PCI_MSI_IRQ_DOMAIN && SYSFS select PCI_HYPERV_INTERFACE help The PCI device frontend driver allows the kernel to import arbitrary PCI devices from a PCI backend to support PCI driver domains. source "drivers/pci/hotplug/Kconfig" source "drivers/pci/controller/Kconfig" source "drivers/pci/endpoint/Kconfig" source "drivers/pci/switch/Kconfig" endif |