drivers/pci/pcie/Kconfig

   1 #
   2 # PCI Express Port Bus Configuration
   3 #
   4 config PCIEPORTBUS
   5         bool "PCI Express support"
   6         depends on PCI
   7         help
   8           This automatically enables PCI Express Port Bus support. Users can
   9           choose Native Hot-Plug support, Advanced Error Reporting support,
  10           Power Management Event support and Virtual Channel support to run
  11           on PCI Express Ports (Root or Switch).
  12
  13 #
  14 # Include service Kconfig here
  15 #
  16 config HOTPLUG_PCI_PCIE
  17         tristate "PCI Express Hotplug driver"
  18         depends on HOTPLUG_PCI && PCIEPORTBUS
  19         help
  20           Say Y here if you have a motherboard that supports PCI Express Native
  21           Hotplug
  22
  23           To compile this driver as a module, choose M here: the
  24           module will be called pciehp.
  25
  26           When in doubt, say N.
  27
  28 source "drivers/pci/pcie/aer/Kconfig"
  29
  30 #
  31 # PCI Express ASPM
  32 #
  33 config PCIEASPM
  34         bool "PCI Express ASPM control" if EXPERT
  35         depends on PCI && PCIEPORTBUS
  36         default y
  37         help
  38           This enables OS control over PCI Express ASPM (Active State
  39           Power Management) and Clock Power Management. ASPM supports
  40           state L0/L0s/L1.
  41
  42           ASPM is initially set up by the firmware. With this option enabled,
  43           Linux can modify this state in order to disable ASPM on known-bad
  44           hardware or configurations and enable it when known-safe.
  45
  46           ASPM can be disabled or enabled at runtime via
  47           /sys/module/pcie_aspm/parameters/policy
  48
  49           When in doubt, say Y.
  50 config PCIEASPM_DEBUG
  51         bool "Debug PCI Express ASPM"
  52         depends on PCIEASPM
  53         default n
  54         help
  55           This enables PCI Express ASPM debug support. It will add per-device
  56           interface to control ASPM.
  57
  58 choice
  59         prompt "Default ASPM policy"
  60         default PCIEASPM_DEFAULT
  61         depends on PCIEASPM
  62
  63 config PCIEASPM_DEFAULT
  64         bool "BIOS default"
  65         depends on PCIEASPM
  66         help
  67           Use the BIOS defaults for PCI Express ASPM.
  68
  69 config PCIEASPM_POWERSAVE
  70         bool "Powersave"
  71         depends on PCIEASPM
  72         help
  73           Enable PCI Express ASPM L0s and L1 where possible, even if the
  74           BIOS did not.
  75
  76 config PCIEASPM_PERFORMANCE
  77         bool "Performance"
  78         depends on PCIEASPM
  79         help
  80           Disable PCI Express ASPM L0s and L1, even if the BIOS enabled them.
  81 endchoice
  82
  83 config PCIE_PME
  84         def_bool y
  85         depends on PCIEPORTBUS && PM_RUNTIME && EXPERIMENTAL && ACPI