1 # SPDX-License-Identifier: GPL-2.0
6 source "drivers/pci/pcie/Kconfig"
8 config PCI_BUS_ADDR_T_64BIT
9 def_bool y if (ARCH_DMA_ADDR_T_64BIT || 64BIT)
13 bool "Message Signaled Interrupts (MSI and MSI-X)"
15 select GENERIC_MSI_IRQ
17 This allows device drivers to enable MSI (Message Signaled
18 Interrupts). Message Signaled Interrupts enable a device to
19 generate an interrupt using an inbound Memory Write on its
20 PCI bus instead of asserting a device IRQ pin.
22 Use of PCI MSI interrupts can be disabled at kernel boot time
23 by using the 'pci=nomsi' option. This disables MSI for the
26 If you don't know what to do here, say Y.
28 config PCI_MSI_IRQ_DOMAIN
29 def_bool ARC || ARM || ARM64 || X86
31 select GENERIC_MSI_IRQ_DOMAIN
35 bool "Enable PCI quirk workarounds" if EXPERT
38 This enables workarounds for various PCI chipset bugs/quirks.
39 Disable this only if your target machine is unaffected by PCI
44 depends on PCI && DEBUG_KERNEL
46 Say Y here if you want the PCI core to produce a bunch of debug
47 messages to the system log. Select this if you are having a
48 problem with PCI support and want to see more of what is going on.
52 config PCI_REALLOC_ENABLE_AUTO
53 bool "Enable PCI resource re-allocation detection"
57 Say Y here if you want the PCI core to detect if PCI resource
58 re-allocation needs to be enabled. You can always use pci=realloc=on
59 or pci=realloc=off to override it. It will automatically
60 re-allocate PCI resources if SR-IOV BARs have not been allocated by
66 tristate "PCI Stub driver"
69 Say Y or M here if you want be able to reserve a PCI device
70 when it is going to be assigned to a guest operating system.
74 config XEN_PCIDEV_FRONTEND
75 tristate "Xen PCI Frontend"
76 depends on PCI && X86 && XEN
78 select XEN_XENBUS_FRONTEND
81 The PCI device frontend driver allows the kernel to import arbitrary
82 PCI devices from a PCI backend to support PCI driver domains.
90 config PCI_LOCKLESS_CONFIG
94 bool "PCI IOV support"
98 I/O Virtualization is a PCI feature supported by some devices
99 which allows them to create virtual devices which share their
105 bool "PCI PRI support"
109 PRI is the PCI Page Request Interface. It allows PCI devices that are
110 behind an IOMMU to recover from page faults.
115 bool "PCI PASID support"
119 Process Address Space Identifiers (PASIDs) can be used by PCI devices
120 to access more than one IO address space at the same time. To make
121 use of this feature an IOMMU is required which also supports PASIDs.
122 Select this option if you have such an IOMMU and want to compile the
123 driver for it into your kernel.
128 def_bool y if (DMI || ACPI)
133 tristate "Hyper-V PCI Frontend"
134 depends on PCI && X86 && HYPERV && PCI_MSI && PCI_MSI_IRQ_DOMAIN && X86_64
136 The PCI device frontend driver allows the kernel to import arbitrary
137 PCI devices from a PCI backend to support PCI driver domains.
139 source "drivers/pci/hotplug/Kconfig"
140 source "drivers/pci/cadence/Kconfig"
141 source "drivers/pci/dwc/Kconfig"
142 source "drivers/pci/host/Kconfig"
143 source "drivers/pci/endpoint/Kconfig"
144 source "drivers/pci/switch/Kconfig"