| # SPDX-License-Identifier: GPL-2.0 |
| # |
| # PCI configuration |
| # |
| |
| source "drivers/pci/pcie/Kconfig" |
| |
| config PCI_MSI |
| bool "Message Signaled Interrupts (MSI and MSI-X)" |
| depends on PCI |
| 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 |
| depends on PCI_MSI |
| select GENERIC_MSI_IRQ_DOMAIN |
| |
| config PCI_QUIRKS |
| default y |
| bool "Enable PCI quirk workarounds" if EXPERT |
| depends on PCI |
| 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 PCI && 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 |
| 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" |
| depends on PCI |
| 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 |
| 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 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 PCI && 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_DISABLE_COMMON_QUIRKS |
| bool "PCI disable common quirks" |
| depends on PCI |
| help |
| If you don't know what to do here, say N. |
| |
| |
| config PCI_ATS |
| bool |
| |
| config PCI_ECAM |
| bool |
| |
| config PCI_LOCKLESS_CONFIG |
| bool |
| |
| config PCI_IOV |
| bool "PCI IOV support" |
| depends on PCI |
| 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" |
| depends on PCI |
| 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" |
| depends on PCI |
| 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_LABEL |
| def_bool y if (DMI || ACPI) |
| depends on PCI |
| select NLS |
| |
| config PCI_HYPERV |
| tristate "Hyper-V PCI Frontend" |
| depends on PCI && X86 && HYPERV && PCI_MSI && PCI_MSI_IRQ_DOMAIN && X86_64 |
| 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" |