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Documentation: PCI: convert acpi-info.txt to reST
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Convert plain text documentation to reStructuredText format and add it to
Sphinx TOC tree.  No essential content change.

Signed-off-by: Changbin Du <[email protected]>
Signed-off-by: Bjorn Helgaas <[email protected]>
Cc: Mauro Carvalho Chehab <[email protected]>
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changbindu authored and bjorn-helgaas committed May 30, 2019
1 parent 3b9bae0 commit b66357f
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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].
Expand Down Expand Up @@ -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
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1 change: 1 addition & 0 deletions Documentation/PCI/index.rst
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Expand Up @@ -12,3 +12,4 @@ Linux PCI Bus Subsystem
picebus-howto
pci-iov-howto
msi-howto
acpi-info

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