105 lines
2.6 KiB
Text
105 lines
2.6 KiB
Text
#
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# PCI Express Port Bus Configuration
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#
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config PCIEPORTBUS
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bool "PCI Express Port Bus support"
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depends on PCI
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help
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This automatically enables PCI Express Port Bus support. Users can
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choose Native Hot-Plug support, Advanced Error Reporting support,
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Power Management Event support and Virtual Channel support to run
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on PCI Express Ports (Root or Switch).
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#
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# Include service Kconfig here
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#
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config HOTPLUG_PCI_PCIE
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bool "PCI Express Hotplug driver"
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depends on HOTPLUG_PCI && PCIEPORTBUS
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help
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Say Y here if you have a motherboard that supports PCI Express Native
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Hotplug
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When in doubt, say N.
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source "drivers/pci/pcie/aer/Kconfig"
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#
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# PCI Express ASPM
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#
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config PCIEASPM
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bool "PCI Express ASPM control" if EXPERT
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depends on PCI && PCIEPORTBUS
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default y
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help
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This enables OS control over PCI Express ASPM (Active State
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Power Management) and Clock Power Management. ASPM supports
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state L0/L0s/L1.
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ASPM is initially set up by the firmware. With this option enabled,
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Linux can modify this state in order to disable ASPM on known-bad
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hardware or configurations and enable it when known-safe.
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ASPM can be disabled or enabled at runtime via
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/sys/module/pcie_aspm/parameters/policy
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When in doubt, say Y.
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config PCIEASPM_DEBUG
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bool "Debug PCI Express ASPM"
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depends on PCIEASPM
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default n
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help
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This enables PCI Express ASPM debug support. It will add per-device
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interface to control ASPM.
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choice
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prompt "Default ASPM policy"
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default PCIEASPM_DEFAULT
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depends on PCIEASPM
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config PCIEASPM_DEFAULT
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bool "BIOS default"
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depends on PCIEASPM
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help
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Use the BIOS defaults for PCI Express ASPM.
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config PCIEASPM_POWERSAVE
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bool "Powersave"
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depends on PCIEASPM
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help
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Enable PCI Express ASPM L0s and L1 where possible, even if the
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BIOS did not.
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config PCIEASPM_PERFORMANCE
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bool "Performance"
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depends on PCIEASPM
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help
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Disable PCI Express ASPM L0s and L1, even if the BIOS enabled them.
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endchoice
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config PCIE_PME
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def_bool y
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depends on PCIEPORTBUS && PM
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config PCIE_DPC
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bool "PCIe Downstream Port Containment support"
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depends on PCIEPORTBUS
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default n
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help
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This enables PCI Express Downstream Port Containment (DPC)
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driver support. DPC events from Root and Downstream ports
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will be handled by the DPC driver. If your system doesn't
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have this capability or you do not want to use this feature,
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it is safe to answer N.
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config PCIE_PTM
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bool "PCIe Precision Time Measurement support"
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default n
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depends on PCIEPORTBUS
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help
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This enables PCI Express Precision Time Measurement (PTM)
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support.
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This is only useful if you have devices that support PTM, but it
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is safe to enable even if you don't.
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