1# 2# PCI Express Port Bus Configuration 3# 4config 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# 16config 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 25source "drivers/pci/pcie/aer/Kconfig" 26 27# 28# PCI Express ASPM 29# 30config 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 48config PCIEASPM_DEBUG 49 bool "Debug PCI Express ASPM" 50 depends on PCIEASPM 51 default n 52 help 53 This enables PCI Express ASPM debug support. It will add per-device 54 interface to control ASPM. 55 56choice 57 prompt "Default ASPM policy" 58 default PCIEASPM_DEFAULT 59 depends on PCIEASPM 60 61config PCIEASPM_DEFAULT 62 bool "BIOS default" 63 depends on PCIEASPM 64 help 65 Use the BIOS defaults for PCI Express ASPM. 66 67config PCIEASPM_POWERSAVE 68 bool "Powersave" 69 depends on PCIEASPM 70 help 71 Enable PCI Express ASPM L0s and L1 where possible, even if the 72 BIOS did not. 73 74config PCIEASPM_PERFORMANCE 75 bool "Performance" 76 depends on PCIEASPM 77 help 78 Disable PCI Express ASPM L0s and L1, even if the BIOS enabled them. 79endchoice 80 81config PCIE_PME 82 def_bool y 83 depends on PCIEPORTBUS && PM 84