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#
# PCI Express Port Bus Configuration
#
config PCIEPORTBUS
bool "PCI Express Port Bus support"
depends on PCI
help
This automatically enables PCI Express Port Bus support. Users can
choose Native Hot-Plug support, Advanced Error Reporting support,
Power Management Event support and Virtual Channel support to run
on PCI Express Ports (Root or Switch).
#
# Include service Kconfig here
#
config HOTPLUG_PCI_PCIE
bool "PCI Express Hotplug driver"
depends on HOTPLUG_PCI && PCIEPORTBUS
help
Say Y here if you have a motherboard that supports PCI Express Native
Hotplug
When in doubt, say N.
source "drivers/pci/pcie/aer/Kconfig"
#
# PCI Express ASPM
#
config PCIEASPM
bool "PCI Express ASPM control" if EXPERT
depends on PCI && PCIEPORTBUS
default y
help
This enables OS control over PCI Express ASPM (Active State
Power Management) and Clock Power Management. ASPM supports
state L0/L0s/L1.
ASPM is initially set up by the firmware. With this option enabled,
Linux can modify this state in order to disable ASPM on known-bad
hardware or configurations and enable it when known-safe.
ASPM can be disabled or enabled at runtime via
/sys/module/pcie_aspm/parameters/policy
When in doubt, say Y.
config PCIEASPM_DEBUG
bool "Debug PCI Express ASPM"
depends on PCIEASPM
default n
help
This enables PCI Express ASPM debug support. It will add per-device
interface to control ASPM.
choice
prompt "Default ASPM policy"
default PCIEASPM_DEFAULT
depends on PCIEASPM
config PCIEASPM_DEFAULT
bool "BIOS default"
depends on PCIEASPM
help
Use the BIOS defaults for PCI Express ASPM.
config PCIEASPM_POWERSAVE
bool "Powersave"
depends on PCIEASPM
help
Enable PCI Express ASPM L0s and L1 where possible, even if the
BIOS did not.
config PCIEASPM_PERFORMANCE
bool "Performance"
depends on PCIEASPM
help
Disable PCI Express ASPM L0s and L1, even if the BIOS enabled them.
endchoice
config PCIE_PME
def_bool y
depends on PCIEPORTBUS && PM