drivers/pci/pcie/Kconfig

   1 #
   2 # PCI Express Port Bus Configuration
   3 #
   4 config PCIEPORTBUS
   5         bool "PCI Express Port Bus 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         bool "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           When in doubt, say N.
  24
  25 source "drivers/pci/pcie/aer/Kconfig"
  26
  27 #
  28 # PCI Express ASPM
  29 #
  30 config PCIEASPM
  31         bool "PCI Express ASPM control" if EXPERT
  32         depends on PCI && PCIEPORTBUS
  33         default y
  34         help
  35           This enables OS control over PCI Express ASPM (Active State
  36           Power Management) and Clock Power Management. ASPM supports
  37           state L0/L0s/L1.
  38
  39           ASPM is initially set up by the firmware. With this option enabled,
  40           Linux can modify this state in order to disable ASPM on known-bad
  41           hardware or configurations and enable it when known-safe.
  42
  43           ASPM can be disabled or enabled at runtime via
  44           /sys/module/pcie_aspm/parameters/policy
  45
  46           When in doubt, say Y.
  47 config PCIEASPM_DEBUG
  48         bool "Debug PCI Express ASPM"
  49         depends on PCIEASPM
  50         default n
  51         help
  52           This enables PCI Express ASPM debug support. It will add per-device
  53           interface to control ASPM.
  54
  55 choice
  56         prompt "Default ASPM policy"
  57         default PCIEASPM_DEFAULT
  58         depends on PCIEASPM
  59
  60 config PCIEASPM_DEFAULT
  61         bool "BIOS default"
  62         depends on PCIEASPM
  63         help
  64           Use the BIOS defaults for PCI Express ASPM.
  65
  66 config PCIEASPM_POWERSAVE
  67         bool "Powersave"
  68         depends on PCIEASPM
  69         help
  70           Enable PCI Express ASPM L0s and L1 where possible, even if the
  71           BIOS did not.
  72
  73 config PCIEASPM_PERFORMANCE
  74         bool "Performance"
  75         depends on PCIEASPM
  76         help
  77           Disable PCI Express ASPM L0s and L1, even if the BIOS enabled them.
  78 endchoice
  79
  80 config PCIE_PME
  81         def_bool y
  82         depends on PCIEPORTBUS && PM_RUNTIME