diff options
Diffstat (limited to 'drivers/pci/pcie/Kconfig')
| -rw-r--r-- | drivers/pci/pcie/Kconfig | 56 |
1 files changed, 45 insertions, 11 deletions
diff --git a/drivers/pci/pcie/Kconfig b/drivers/pci/pcie/Kconfig index 5a0c6ad53f8..7958e59d607 100644 --- a/drivers/pci/pcie/Kconfig +++ b/drivers/pci/pcie/Kconfig @@ -2,7 +2,7 @@ # PCI Express Port Bus Configuration # config PCIEPORTBUS - bool "PCI Express support" + bool "PCI Express Port Bus support" depends on PCI help This automatically enables PCI Express Port Bus support. Users can @@ -14,15 +14,12 @@ config PCIEPORTBUS # Include service Kconfig here # config HOTPLUG_PCI_PCIE - tristate "PCI Express Hotplug driver" + bool "PCI Express Hotplug driver" depends on HOTPLUG_PCI && PCIEPORTBUS help Say Y here if you have a motherboard that supports PCI Express Native Hotplug - To compile this driver as a module, choose M here: the - module will be called pciehp. - When in doubt, say N. source "drivers/pci/pcie/aer/Kconfig" @@ -31,14 +28,22 @@ source "drivers/pci/pcie/aer/Kconfig" # PCI Express ASPM # config PCIEASPM - bool "PCI Express ASPM support(Experimental)" - depends on PCI && EXPERIMENTAL && PCIEPORTBUS - default n + bool "PCI Express ASPM control" if EXPERT + depends on PCI && PCIEPORTBUS + default y help - This enables PCI Express ASPM (Active State Power Management) and - Clock Power Management. ASPM supports state L0/L0s/L1. + This enables OS control over PCI Express ASPM (Active State + Power Management) and Clock Power Management. ASPM supports + state L0/L0s/L1. - When in doubt, say N. + ASPM is initially set up by the firmware. With this option enabled, + Linux can modify this state in order to disable ASPM on known-bad + hardware or configurations and enable it when known-safe. + + ASPM can be disabled or enabled at runtime via + /sys/module/pcie_aspm/parameters/policy + + When in doubt, say Y. config PCIEASPM_DEBUG bool "Debug PCI Express ASPM" depends on PCIEASPM @@ -46,3 +51,32 @@ config PCIEASPM_DEBUG help This enables PCI Express ASPM debug support. It will add per-device interface to control ASPM. + +choice + prompt "Default ASPM policy" + default PCIEASPM_DEFAULT + depends on PCIEASPM + +config PCIEASPM_DEFAULT + bool "BIOS default" + depends on PCIEASPM + help + Use the BIOS defaults for PCI Express ASPM. + +config PCIEASPM_POWERSAVE + bool "Powersave" + depends on PCIEASPM + help + Enable PCI Express ASPM L0s and L1 where possible, even if the + BIOS did not. + +config PCIEASPM_PERFORMANCE + bool "Performance" + depends on PCIEASPM + help + Disable PCI Express ASPM L0s and L1, even if the BIOS enabled them. +endchoice + +config PCIE_PME + def_bool y + depends on PCIEPORTBUS && PM_RUNTIME |