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pci
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pcie
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Kconfig

Kconfig 2.0 KB
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  1. #
    2. 

  2. # PCI Express Port Bus Configuration
    3. 

  3. #
    4. 

  4. config PCIEPORTBUS
    5. 

  5. 	bool "PCI Express Port Bus support"
    6. 

  6. 	depends on PCI
    7. 

  7. 	help
    8. 

  8. 	  This automatically enables PCI Express Port Bus support. Users can
    9. 

  9. 	  choose Native Hot-Plug support, Advanced Error Reporting support,
    10. 

  10. 	  Power Management Event support and Virtual Channel support to run
    11. 

  11. 	  on PCI Express Ports (Root or Switch).
    12. 

  12. 

  13. #
    14. 

  14. # Include service Kconfig here
    15. 

  15. #
    16. 

  16. config HOTPLUG_PCI_PCIE
    17. 

  17. 	bool "PCI Express Hotplug driver"
    18. 

  18. 	depends on HOTPLUG_PCI && PCIEPORTBUS
    19. 

  19. 	help
    20. 

  20. 	  Say Y here if you have a motherboard that supports PCI Express Native
    21. 

  21. 	  Hotplug
    22. 

  22. 

  23. 	  When in doubt, say N.
    24. 

  24. 

  25. source "drivers/pci/pcie/aer/Kconfig"
    26. 

  26. 

  27. #
    28. 

  28. # PCI Express ASPM
    29. 

  29. #
    30. 

  30. config PCIEASPM
    31. 

  31. 	bool "PCI Express ASPM control" if EXPERT
    32. 

  32. 	depends on PCI && PCIEPORTBUS
    33. 

  33. 	default y
    34. 

  34. 	help
    35. 

  35. 	  This enables OS control over PCI Express ASPM (Active State
    36. 

  36. 	  Power Management) and Clock Power Management. ASPM supports
    37. 

  37. 	  state L0/L0s/L1.
    38. 

  38. 

  39. 	  ASPM is initially set up by the firmware. With this option enabled,
    40. 

  40. 	  Linux can modify this state in order to disable ASPM on known-bad
    41. 

  41. 	  hardware or configurations and enable it when known-safe.
    42. 

  42. 

  43. 	  ASPM can be disabled or enabled at runtime via
    44. 

  44. 	  /sys/module/pcie_aspm/parameters/policy
    45. 

  45. 

  46. 	  When in doubt, say Y.
    47. 

  47. config PCIEASPM_DEBUG
    48. 

  48. 	bool "Debug PCI Express ASPM"
    49. 

  49. 	depends on PCIEASPM
    50. 

  50. 	default n
    51. 

  51. 	help
    52. 

  52. 	  This enables PCI Express ASPM debug support. It will add per-device
    53. 

  53. 	  interface to control ASPM.
    54. 

  54. 

  55. choice
    56. 

  56. 	prompt "Default ASPM policy"
    57. 

  57. 	default PCIEASPM_DEFAULT
    58. 

  58. 	depends on PCIEASPM
    59. 

  59. 

  60. config PCIEASPM_DEFAULT
    61. 

  61.         bool "BIOS default"
    62. 

  62. 	depends on PCIEASPM
    63. 

  63. 	help
    64. 

  64. 	  Use the BIOS defaults for PCI Express ASPM.
    65. 

  65. 

  66. config PCIEASPM_POWERSAVE
    67. 

  67.         bool "Powersave"
    68. 

  68. 	depends on PCIEASPM
    69. 

  69. 	help
    70. 

  70. 	  Enable PCI Express ASPM L0s and L1 where possible, even if the
    71. 

  71. 	  BIOS did not.
    72. 

  72. 

  73. config PCIEASPM_PERFORMANCE
    74. 

  74.         bool "Performance"
    75. 

  75. 	depends on PCIEASPM
    76. 

  76. 	help
    77. 

  77. 	  Disable PCI Express ASPM L0s and L1, even if the BIOS enabled them.
    78. 

  78. endchoice
    79. 

  79. 

  80. config PCIE_PME
    81. 

  81. 	def_bool y
    82. 

  82. 	depends on PCIEPORTBUS && PM
    83.