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drivers
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pci
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pcie
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Kconfig

Kconfig 2.1 KB
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  1. #
    2. 

  2. # PCI Express Port Bus Configuration
    3. 

  3. #
    4. 

  4. config PCIEPORTBUS
    5. 

  5. 	bool "PCI Express 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. 	tristate "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. 	  To compile this driver as a module, choose M here: the
    24. 

  24. 	  module will be called pciehp.
    25. 

  25. 

  26. 	  When in doubt, say N.
    27. 

  27. 

  28. source "drivers/pci/pcie/aer/Kconfig"
    29. 

  29. 

  30. #
    31. 

  31. # PCI Express ASPM
    32. 

  32. #
    33. 

  33. config PCIEASPM
    34. 

  34. 	bool "PCI Express ASPM control" if EXPERT
    35. 

  35. 	depends on PCI && PCIEPORTBUS
    36. 

  36. 	default y
    37. 

  37. 	help
    38. 

  38. 	  This enables OS control over PCI Express ASPM (Active State
    39. 

  39. 	  Power Management) and Clock Power Management. ASPM supports
    40. 

  40. 	  state L0/L0s/L1.
    41. 

  41. 

  42. 	  ASPM is initially set up by the firmware. With this option enabled,
    43. 

  43. 	  Linux can modify this state in order to disable ASPM on known-bad
    44. 

  44. 	  hardware or configurations and enable it when known-safe.
    45. 

  45. 

  46. 	  ASPM can be disabled or enabled at runtime via
    47. 

  47. 	  /sys/module/pcie_aspm/parameters/policy
    48. 

  48. 

  49. 	  When in doubt, say Y.
    50. 

  50. config PCIEASPM_DEBUG
    51. 

  51. 	bool "Debug PCI Express ASPM"
    52. 

  52. 	depends on PCIEASPM
    53. 

  53. 	default n
    54. 

  54. 	help
    55. 

  55. 	  This enables PCI Express ASPM debug support. It will add per-device
    56. 

  56. 	  interface to control ASPM.
    57. 

  57. 

  58. choice
    59. 

  59. 	prompt "Default ASPM policy"
    60. 

  60. 	default PCIEASPM_DEFAULT
    61. 

  61. 	depends on PCIEASPM
    62. 

  62. 

  63. config PCIEASPM_DEFAULT
    64. 

  64.         bool "BIOS default"
    65. 

  65. 	depends on PCIEASPM
    66. 

  66. 	help
    67. 

  67. 	  Use the BIOS defaults for PCI Express ASPM.
    68. 

  68. 

  69. config PCIEASPM_POWERSAVE
    70. 

  70.         bool "Powersave"
    71. 

  71. 	depends on PCIEASPM
    72. 

  72. 	help
    73. 

  73. 	  Enable PCI Express ASPM L0s and L1 where possible, even if the
    74. 

  74. 	  BIOS did not.
    75. 

  75. 

  76. config PCIEASPM_PERFORMANCE
    77. 

  77.         bool "Performance"
    78. 

  78. 	depends on PCIEASPM
    79. 

  79. 	help
    80. 

  80. 	  Disable PCI Express ASPM L0s and L1, even if the BIOS enabled them.
    81. 

  81. endchoice
    82. 

  82. 

  83. config PCIE_PME
    84. 

  84. 	def_bool y
    85. 

  85. 	depends on PCIEPORTBUS && PM_RUNTIME && EXPERIMENTAL && ACPI
    86. 

  86.