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Open Menu / drivers / pci / pcie / Kconfig
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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_RUNTIME