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. 47config 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 55choice 56 prompt "Default ASPM policy" 57 default PCIEASPM_DEFAULT 58 depends on PCIEASPM 59 60config PCIEASPM_DEFAULT 61 bool "BIOS default" 62 depends on PCIEASPM 63 help 64 Use the BIOS defaults for PCI Express ASPM. 65 66config 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 73config 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. 78endchoice 79 80config PCIE_PME 81 def_bool y 82 depends on PCIEPORTBUS && PM 83