Differential D41248

spibus(4): Add support for ACPI-based children enumeration
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Authored by wulf on Jul 31 2023, 2:59 PM.

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imp
manu

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rG7d380b986a18: spibus(4): Add support for ACPI-based children enumeration

Summary

When spibus is attached as child of Intel SPI controller it scans all
ACPI nodes for "SPI Serial Bus Connection Resource Descriptor" described
in section 19.6.126 of ACPI specs.
If such a descriptor is found, SPI child is added to spibus, it's SPI
chip select, mode, clock, IRQ resource and ACPI handle are added to ivars.
Existing ACPI bus-hosted child is deleted afterwards.

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Repository

rG FreeBSD src repository

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No Test Coverage

Build Status

Buildable 52904
Build 49795: arc lint + arc unit

Event Timeline

wulf requested review of this revision.Jul 31 2023, 2:59 PM

wulf created this revision.

Harbormaster completed remote builds in B52904: Diff 125373.Jul 31 2023, 2:59 PM

manu accepted this revision.Aug 1 2023, 7:21 AM

This revision is now accepted and ready to land.Aug 1 2023, 7:21 AM

Closed by commit rG7d380b986a18: spibus(4): Add support for ACPI-based children enumeration (authored by wulf). · Explain WhyAug 3 2023, 4:12 PM

This revision was automatically updated to reflect the committed changes.

wulf added a commit: rG7d380b986a18: spibus(4): Add support for ACPI-based children enumeration.

Revision Contents
Changeset List

Path

Size

sys/

dev/

spibus/

580 lines

26 lines

10 lines

modules/

spi/

spibus/

5 lines

Diff 125373

sys/dev/spibus/acpi_spibus.c

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sys/dev/spibus/spibus.c

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sys/dev/spibus/spibusvar.h

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sys/modules/spi/spibus/Makefile

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