acpi: Support Functional Fixed Hardware
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Authored by aokblast on Feb 24 2026, 7:25 AM.

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Summary

ACPI Functional Fixed Hardware is a address space defined in ACPI
GAS (Generic Address Space). This implementation relies on CPU
manufacturer to define specific hardware instruction to access. We
add it to our kernel resource management system.

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Repository

rG FreeBSD src repository

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Lint Passed

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No Test Coverage

Build Status

Buildable 71060
Build 67943: arc lint + arc unit

Event Timeline

aokblast created this revision.Feb 24 2026, 7:25 AM

Herald added subscribers: olce, imp. · View Herald TranscriptFeb 24 2026, 7:25 AM

aokblast requested review of this revision.Feb 24 2026, 7:25 AM

Harbormaster completed remote builds in B70942: Diff 172562.Feb 24 2026, 7:25 AM

aokblast added a child revision: D55477: hwpstate_amd: Support writable cpufreq interface in CPPC mode.Feb 24 2026, 7:31 AM

aokblast added a reviewer: olce.

Mark FFH resource as 1 byte to prevent resource overlap

Harbormaster completed remote builds in B70987: Diff 172665.Feb 25 2026, 10:43 AM

aokblast added a child revision: D55505: acpi_perf: Mark readonly when using FFH.Feb 25 2026, 10:45 AM

Use uint64_t instead of platform dependent register_t

Harbormaster completed remote builds in B71060: Diff 172845.Feb 27 2026, 7:12 AM

Revision Contents
Changeset List

Path

Size

sys/

dev/

acpica/

acpi.c

34 lines

acpivar.h

2 lines

kern/

subr_bus.c

6 lines

Diff 172845

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sys/dev/acpica/acpi.c

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sys/dev/acpica/acpivar.h

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acpi: Support Functional Fixed HardwareNeeds ReviewPublicActions

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Revision ContentsChangeset List

Diff 172845

sys/dev/acpica/acpi.c

sys/dev/acpica/acpivar.h

sys/kern/subr_bus.c

acpi: Support Functional Fixed Hardware
Needs ReviewPublic
Actions

Revision Contents
Changeset List