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1da177e4 LT |
1 | # |
2 | # PCI Express Port Bus Configuration | |
3 | # | |
4 | config PCIEPORTBUS | |
5 | bool "PCI Express 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 | # | |
16 | config HOTPLUG_PCI_PCIE | |
17 | tristate "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 | To compile this driver as a module, choose M here: the | |
24 | module will be called pciehp. | |
25 | ||
26 | When in doubt, say N. | |
27 | ||
6c2b374d | 28 | source "drivers/pci/pcie/aer/Kconfig" |
7d715a6c SL |
29 | |
30 | # | |
31 | # PCI Express ASPM | |
32 | # | |
33 | config PCIEASPM | |
6a108a14 | 34 | bool "PCI Express ASPM control" if EXPERT |
ea5f9fc5 MG |
35 | depends on PCI && PCIEPORTBUS |
36 | default y | |
7d715a6c | 37 | help |
ea5f9fc5 MG |
38 | This enables OS control over PCI Express ASPM (Active State |
39 | Power Management) and Clock Power Management. ASPM supports | |
40 | state L0/L0s/L1. | |
7d715a6c | 41 | |
d56641c7 | 42 | ASPM is initially set up by the firmware. With this option enabled, |
ea5f9fc5 MG |
43 | Linux can modify this state in order to disable ASPM on known-bad |
44 | hardware or configurations and enable it when known-safe. | |
45 | ||
46 | ASPM can be disabled or enabled at runtime via | |
47 | /sys/module/pcie_aspm/parameters/policy | |
48 | ||
49 | When in doubt, say Y. | |
7d715a6c SL |
50 | config PCIEASPM_DEBUG |
51 | bool "Debug PCI Express ASPM" | |
52 | depends on PCIEASPM | |
53 | default n | |
54 | help | |
55 | This enables PCI Express ASPM debug support. It will add per-device | |
56 | interface to control ASPM. | |
c7f48656 | 57 | |
ad71c962 MG |
58 | choice |
59 | prompt "Default ASPM policy" | |
60 | default PCIEASPM_DEFAULT | |
61 | depends on PCIEASPM | |
62 | ||
63 | config PCIEASPM_DEFAULT | |
64 | bool "BIOS default" | |
65 | depends on PCIEASPM | |
66 | help | |
67 | Use the BIOS defaults for PCI Express ASPM. | |
68 | ||
69 | config PCIEASPM_POWERSAVE | |
70 | bool "Powersave" | |
71 | depends on PCIEASPM | |
72 | help | |
73 | Enable PCI Express ASPM L0s and L1 where possible, even if the | |
74 | BIOS did not. | |
75 | ||
76 | config PCIEASPM_PERFORMANCE | |
77 | bool "Performance" | |
78 | depends on PCIEASPM | |
79 | help | |
80 | Disable PCI Express ASPM L0s and L1, even if the BIOS enabled them. | |
81 | endchoice | |
82 | ||
c7f48656 RW |
83 | config PCIE_PME |
84 | def_bool y | |
444ee9bd | 85 | depends on PCIEPORTBUS && PM_RUNTIME && ACPI |