| # |
| # PCI Express Port Bus Configuration |
| # |
| config PCIEPORTBUS |
| bool "PCI Express support" |
| depends on PCI |
| help |
| This automatically enables PCI Express Port Bus support. Users can |
| choose Native Hot-Plug support, Advanced Error Reporting support, |
| Power Management Event support and Virtual Channel support to run |
| on PCI Express Ports (Root or Switch). |
| |
| # |
| # Include service Kconfig here |
| # |
| config HOTPLUG_PCI_PCIE |
| tristate "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" |
| |
| # |
| # PCI Express ASPM |
| # |
| config PCIEASPM |
| bool "PCI Express ASPM control" if EXPERT |
| depends on PCI && PCIEPORTBUS |
| default y |
| help |
| This enables OS control over PCI Express ASPM (Active State |
| Power Management) and Clock Power Management. ASPM supports |
| state L0/L0s/L1. |
| |
| 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 |
| default n |
| 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 && EXPERIMENTAL && ACPI |
