mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-02 08:34:20 +08:00
9de0eec29c
Clean up drivers/Makefile by moving the pci/endpoint and pci/dwc entries from drivers/Makefile into drivers/pci/Makefile. Since we don't want to introduce any dependency between CONFIG_PCI and CONFIG_PCI_ENDPOINT, we now always execute drivers/pci/Makefile. Hence all Makefiles in drivers/pci/ were updated accordingly so no file is compiled when CONFIG_PCI is not defined. Also, we add a comment to reinforce that EPC and EPF libraries must be initialized before their users. Hence built-in EPC drivers, such as those of Designware, are linked after the endpoint core libraries. Finally, we add another comment to explain why obj-y has been chosen instead of obj-$(CONFIG_PCIE_DW) to parse the dwc/ sub-folder. Signed-off-by: Cyrille Pitchen <cyrille.pitchen@free-electrons.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
143 lines
3.8 KiB
Plaintext
143 lines
3.8 KiB
Plaintext
#
|
|
# PCI configuration
|
|
#
|
|
|
|
source "drivers/pci/pcie/Kconfig"
|
|
|
|
config PCI_BUS_ADDR_T_64BIT
|
|
def_bool y if (ARCH_DMA_ADDR_T_64BIT || 64BIT)
|
|
depends on PCI
|
|
|
|
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 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_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/dwc/Kconfig"
|
|
source "drivers/pci/host/Kconfig"
|
|
source "drivers/pci/endpoint/Kconfig"
|
|
source "drivers/pci/switch/Kconfig"
|