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Differential D17676

Emulated S3 with s0ix (not currently working)
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Authored by bwidawsk on Oct 23 2018, 10:20 PM.
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Summary

These were developed on github:
https://github.com/bwidawsk/freebsd/tree/s0ix

S0ix is the name of Intel's implementation of Low Power Idle states as described
in ACPI spec via LPIT, and SPMC. It can be thought of as a hardware managed
suspend state whereby all software needs to do is sufficiently idle the system,
and hardware will go into the lower power state until woken by a specified set
of events.

Newer laptops with Intel CPUs prefer a sleep state known as s0ix (where x can be
1, 2, or 3). s0ix entry and benefits are explained in the patches found on
github.

Test Plan

Test suspend to idle on a machine supporting s0ix. Use residency
counters to determine if successful.

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Build Status
Buildable 20375
Build 19816: arc lint + arc unit

Event Timeline

bwidawsk created this revision.Oct 23 2018, 10:20 PM
Harbormaster completed remote builds in B20375: Diff 49532.Oct 23 2018, 10:20 PM
bwidawsk added a comment.Oct 23 2018, 10:22 PM

The hunks for the idle suspend stuff were some WIP that I hadn't finished. They can be ignored.

bwidawsk added a parent revision: D17675: Suspend to idle support.Oct 23 2018, 10:28 PM
bwidawsk added a parent revision: D16635: Summary: acpi: fix acpi_ec_probe to only check EC devices.
bwidawsk updated this revision to Diff 49637.Oct 25 2018, 11:38 PM

Small fix for systems which don't have a pm device

Harbormaster completed remote builds in B20436: Diff 49637.Oct 25 2018, 11:38 PM
scottph added a subscriber: scottph.Nov 29 2018, 7:49 PM
lwhsu added a subscriber: lwhsu.Dec 4 2018, 5:03 PM
val_packett.cool added a subscriber: val_packett.cool.Dec 25 2018, 9:00 PM
scottl added a subscriber: scottl.Jun 12 2019, 2:49 PM
git_danielschaefer.me added a subscriber: git_danielschaefer.me.Jul 21 2024, 6:49 PM
emaste mentioned this in D17675: Suspend to idle support.Sep 25 2024, 2:29 PM
grahamperrin added a subscriber: grahamperrin.Nov 3 2024, 2:08 AM
obiwac mentioned this in D48387: acpi_spmc: Add SPMC (system power management controller) driver.Jan 9 2025, 12:15 AM

Revision Contents
Changeset List

PathSize
sys/
conf/
2 lines
dev/
acpica/
132 lines
199 lines
417 lines
5 lines
kern/
64 lines
12 lines
sys/
3 lines

Diff 49532

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sys/conf/files.amd64

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sys/dev/acpica/acpi.c

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sys/dev/acpica/acpi_lpit.c

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sys/dev/acpica/acpi_spmc.c

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sys/dev/acpica/acpivar.h

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sys/kern/device_if.m

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sys/kern/subr_bus.c

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sys/sys/bus.h

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