diff options
Diffstat (limited to 'Documentation/PCI')
| -rw-r--r-- | Documentation/PCI/acpi-info.rst (renamed from Documentation/PCI/acpi-info.txt) | 15 | ||||
| -rw-r--r-- | Documentation/PCI/index.rst | 1 |
2 files changed, 11 insertions, 5 deletions
diff --git a/Documentation/PCI/acpi-info.txt b/Documentation/PCI/acpi-info.rst index 3ffa3b03970e..060217081c79 100644 --- a/Documentation/PCI/acpi-info.txt +++ b/Documentation/PCI/acpi-info.rst @@ -1,4 +1,8 @@ - ACPI considerations for PCI host bridges +.. SPDX-License-Identifier: GPL-2.0 + +======================================== +ACPI considerations for PCI host bridges +======================================== The general rule is that the ACPI namespace should describe everything the OS might use unless there's another way for the OS to find it [1, 2]. @@ -131,12 +135,13 @@ address always corresponds to bus 0, even if the bus range below the bridge [4] ACPI 6.2, sec 6.4.3.5.1, 2, 3, 4: QWord/DWord/Word Address Space Descriptor (.1, .2, .3) - General Flags: Bit [0] Ignored + General Flags: Bit [0] Ignored Extended Address Space Descriptor (.4) - General Flags: Bit [0] Consumer/Producer: - 1–This device consumes this resource - 0–This device produces and consumes this resource + General Flags: Bit [0] Consumer/Producer: + + * 1 – This device consumes this resource + * 0 – This device produces and consumes this resource [5] ACPI 6.2, sec 19.6.43: ResourceUsage specifies whether the Memory range is consumed by diff --git a/Documentation/PCI/index.rst b/Documentation/PCI/index.rst index 458354daac47..6f573f3df993 100644 --- a/Documentation/PCI/index.rst +++ b/Documentation/PCI/index.rst @@ -12,3 +12,4 @@ Linux PCI Bus Subsystem picebus-howto pci-iov-howto msi-howto + acpi-info |