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John Baldwin 4ba4cfaf9f acpi: Narrow workaround for broken interrupt settings on x86
Commit 9a7bf07ccd from 2016 introduced a workaround for some broken
BIOSes that specified active-lo instead of active-hi polarity for ISA
IRQs for UARTs.  The workaround assumed that edge-sensitive ISA IRQs
on x86 should always be active-hi.  However, some recent AMD systems
actually use active-lo edge-sensitive ISA IRQs (and not just for
UARTs, but also for the keyboard and PS/2 mouse devices) and the
override causes interrupts to be dropped resulting in boot time hangs,
non-working keyboards, etc.

Add a hw.acpi.override_isa_irq_polarity tunable (readable as a sysctl
post-boot) to control this quirk.  It can be set to 1 to force enable
the override and 0 to disable it.  The log of original message
mentions an Intel motherboard as the sample case, so default the
tunable to 1 on systems with an Intel CPU and 0 otherwise.

Special thanks to Matthias Lanter <freebsd@lanter-it.ch> for tracking
down boot time issues on recent AMD systems to mismatched interrupt
polarity.

PR:		270707
Reported by:	aixdroix_OSS@protonmail.com, Michael Dexter
Reported by:	mfw_burn@pm.me, Hannes Hfauswedell <h2+fbsdports@fsfe.org>
Reported by:	Matthias Lanter <freebsd@lanter-it.ch>
Reported by:	William Bulley <web@umich.edu>
Reviewed by:	imp, emaste
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D45554

(cherry picked from commit 0a34d050ae8ea14feddd3d2a62fd2f612613b2c5)
2024-07-22 15:54:14 -04:00
.cirrus-ci Cirrus-CI: add some timing info on pkg install failure 2021-08-04 15:02:00 -04:00
.github .github: Update the path used for the homebrew LLVM install on macOS 2024-05-14 12:53:59 -04:00
bin cat: Check for lack of success rather than a specific failure. 2024-05-14 08:58:40 +02:00
cddl libdtrace: Use designated initializers for modules ops tables 2024-07-21 20:55:27 -04:00
contrib contrib/bc: upgrade to version 6.7.6 2024-07-16 20:05:14 +02:00
crypto openssh: use '' instead of `' in config.h 2024-07-15 14:45:16 -04:00
etc Don't package /var/db/locate.database 2024-06-04 06:00:44 +01:00
gnu Remove $FreeBSD$: one-line sh pattern 2023-08-16 11:55:03 -06:00
include sysexits: Tidy deprecated header and manual 2024-05-20 21:10:15 -06:00
kerberos5 kerberos5: Mitigate the possibility of using an old libcrypto 2024-01-22 07:49:05 -08:00
lib csu: Find the main pointer through the GOT 2024-07-15 12:26:22 +00:00
libexec rc.conf: Leap-seconds sources: Add IANA back 2024-07-21 19:36:30 -07:00
release EC2: Bump AMI size to 6 GB 2024-07-12 10:17:28 -07:00
rescue zfs: merge openzfs/zfs@32949f256 (zfs-2.2-release) into stable/14 2023-09-03 09:15:24 +02:00
sbin nvmecontrol: Fix "Workloadd" typo 2024-07-21 13:46:02 -04:00
secure Update config/build info for OpenSSL 2024-06-29 13:29:19 -07:00
share acpi: Narrow workaround for broken interrupt settings on x86 2024-07-22 15:54:14 -04:00
stand stand: module: unlink the entire tail when dependencies fail to load 2024-07-21 00:24:50 -05:00
sys acpi: Narrow workaround for broken interrupt settings on x86 2024-07-22 15:54:14 -04:00
targets loader: add target for dirdeps build 2024-04-15 20:32:03 -06:00
tests sched tests: Avoid underflow when maxcpuid == 0 2024-07-21 20:55:27 -04:00
tools stale-symlink-buildworld.sh: a script to check for stale symlinks on a FreeBSD system 2024-07-13 10:11:51 +00:00
usr.bin lockf tests: Fix a race 2024-07-21 20:55:27 -04:00
usr.sbin leap-seconds: Update to leap-seconds 3960057600 obtained from IERS 2024-07-21 19:36:30 -07:00
.arcconfig arcanist: use FreeBSD/git project repository instead of FreeBSD/svn 2022-08-23 14:16:41 +00:00
.arclint
.cirrus.yml Cirrus-CI: switch to llvm18 by default 2024-04-23 13:56:58 -04:00
.clang-format clang-format: Minor tweaks 2024-05-20 09:42:32 -04:00
.git-blame-ignore-revs git-blame-ignore-revs: OptionalObsoleteFiles.inc sorting commits 2023-12-02 00:56:40 +00:00
.gitattributes
.gitignore .gitignore: Ignore LSP generated .cache 2023-03-07 10:04:18 -05:00
CONTRIBUTING.md CONTRIBUTING.md: fix typo from commmit to commit 2024-03-22 09:30:30 -04:00
COPYRIGHT Happy New Year 2023! 2023-01-01 13:44:43 +08:00
LOCKS Remove $FreeBSD$: one-line bare tag 2023-08-16 11:55:20 -06:00
MAINTAINERS Remove $FreeBSD$: one-line bare tag 2023-08-16 11:55:20 -06:00
Makefile pkgbase: Create two new rules for creating repo 2024-06-04 13:36:24 +02:00
Makefile.inc1 Makefile.inc1: Fix typo affecting incremental pkgbase builds. 2024-06-27 10:59:29 +02:00
Makefile.libcompat build{libcompat}: Pass UNIVERSE_TOOLCHAIN_PATH to the _lc_build-tools submake 2023-08-21 21:00:45 -07:00
Makefile.sys.inc Remove $FreeBSD$: one-line sh pattern 2023-08-16 11:55:03 -06:00
ObsoleteFiles.inc Remove remnants of portsnap(8) 2024-05-09 15:52:53 +09:00
README.md README.md: link to the list of supported platforms 2022-11-01 12:20:55 -03:00
RELNOTES RELNOTES: document MAC/do 2024-06-27 10:50:17 +02:00
UPDATING stand/lua: always allow overriding with local config files 2024-04-16 13:54:21 -06:00

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