src/sys/dev/amdsbwd, branch releng/13.4

sys: Remove $FreeBSD$: one-line .c pattern

2023-08-23T17:43:25+00:00

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

Similar commit in current:
(cherry picked from commit 685dc743dc3b)

sys: Remove $FreeBSD$: two-line .h pattern

2023-08-23T17:43:20+00:00

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

Similar commit in current:
(cherry picked from commit 95ee2897e98f)

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

2023-07-25T15:13:49+00:00

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with:		pfg
MFC After:		3 days
Sponsored by:		Netflix

(cherry picked from commit 4d846d260e2b9a3d4d0a701462568268cbfe7a5b)

amdsbwd(4): Fix a typo in a source code comment

2022-06-10T12:32:22+00:00

- s/accross/across/

(cherry picked from commit 68c0bd3e3f45e030d48b354d7444934ca381a07e)

amdsbwd: always enable watchdog register decoding

2021-12-27T11:37:29+00:00

This seems to be required even if the watchdog is accessed via the common
MMIO space.

Tested on:
- Ryzen 3 3200U APU;
- Ryzen 7 5800X CPU with X570 chipset.

(cherry picked from commit cca0d3bbd8c9f8b50c6940c33704a6c8c464b68f)

amd*: clean up empty lines in .c and .h files

2020-09-01T21:39:19+00:00

amdsbwd, intpm: Add Hygon Dhyana support.

2020-02-13T19:09:24+00:00

Initialize the FCH SMBus controller for Hygon Dhyana CPU.
Set the vendor of the FCH description via the exact CPU vendor.

Submitted by:	Pu Wen 
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D23558

Extract eventfilter declarations to sys/_eventfilter.h

2019-05-20T00:38:23+00:00

This allows replacing "sys/eventfilter.h" includes with "sys/_eventfilter.h"
in other header files (e.g., sys/{bus,conf,cpu}.h) and reduces header
pollution substantially.

EVENTHANDLER_DECLARE and EVENTHANDLER_LIST_DECLAREs were moved out of .c
files into appropriate headers (e.g., sys/proc.h, powernv/opal.h).

As a side effect of reduced header pollution, many .c files and headers no
longer contain needed definitions.  The remainder of the patch addresses
adding appropriate includes to fix those files.

LOCK_DEBUG and LOCK_FILE_LINE_ARG are moved to sys/_lock.h, as required by
sys/mutex.h since r326106 (but silently protected by header pollution prior
to this change).

No functional change (intended).  Of course, any out of tree modules that
relied on header pollution for sys/eventhandler.h, sys/lock.h, or
sys/mutex.h inclusion need to be fixed.  __FreeBSD_version has been bumped.

amdsbwd: fix reboot status reporting

2018-05-05T05:22:11+00:00

Originally, I overlooked that PMIO register 0xc0 has a dual personality.
It can either be S5/Reset Status register or Misc. Fix register (aka
debug status register).  The mode is controlled by bit 2 in PMIO
register 0xc4.  Apparently there are register programming requirements
for the second personality, so many BIOSes leave the register, after
programming it, in that mode.  So, we need to switch the register to the
correct mode.

Additionally, AMDSB8_WD_RST_STS was defined incorrectly as bit 13 while
it is actually bit 25 (and the register's width is 32 bits, not 16).

With this change I see the following in dmesg after a reset by the
watchdog:
amdsbwd0: ResetStatus = 0x42000000
amdsbwd0: Previous Reset was caused by Watchdog

MFC after:	2 weeks

amdsbwd: add suspend and resume methods

2018-05-03T15:33:18+00:00

Without the suspend method the watchdog may fire in S1 state.  Without
the resume method the watchdog is not re-enabled after returning from S3
state.  I observe this on one of my systems.

Not sure if watchdog(4) should participate in the suspend actions.
Right now everything is up to individual drivers.

MFC after:	2 weeks