x86: Remove invalid DEVMETHOD methods for leaf devices

None of these drivers are for bus devices, so bus_generic_* is not
appropriate. Most of these were nops except that detach would
actually "suc

x86: Remove invalid DEVMETHOD methods for leaf devices

None of these drivers are for bus devices, so bus_generic_* is not
appropriate. Most of these were nops except that detach would
actually "succeed" (but not do any cleanup).

Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D47374

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sys: Remove ancient SCCS tags.

Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a perl s

sys: Remove ancient SCCS tags.

Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a perl script.

Sponsored by: Netflix

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x86: make EARLY_AP_STARTUP mandatory

When early AP startup was introduced in 2016 it was put behind a kernel
option EARLY_AP_STARTUP as a transition aid, so that it could be turned
off if necessary.

x86: make EARLY_AP_STARTUP mandatory

When early AP startup was introduced in 2016 it was put behind a kernel
option EARLY_AP_STARTUP as a transition aid, so that it could be turned
off if necessary. For x86 the non-EARLY_AP_STARTUP case is no longer
functional, so disallow it.

Other archs are still incompatible with EARLY_AP_STARTUP, so the option
cannot yet be removed entirely.

Reported by: wollman
Reviewed by: markj
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D41351

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

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

x86: Move i386 timerreg.h to x86

Reviewed by: emaste, jhb
Differential Revision: https://reviews.freebsd.org/D39656
MFC after: 1 month

x86: Move i386 ppireg.h to x86

Differential Revision: https://reviews.freebsd.org/D39655
MFC after: 1 month

x86: Remove unused devclass arguments to DRIVER_MODULE.

i386: Fix the nodevice apic build

PR: 263124
Fixes: 62d09b46ad75 ("x86: Defer LAPIC calibration until after timecounters are available")
Reviewed by: kib, jhb, emaste
MFC after: 3 days
Sponsored b

i386: Fix the nodevice apic build

PR: 263124
Fixes: 62d09b46ad75 ("x86: Defer LAPIC calibration until after timecounters are available")
Reviewed by: kib, jhb, emaste
MFC after: 3 days
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D34830

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x86/tsc: fetch frequency from CPUID when running on Xen

Introduce a helper to fetch the TSC frequency from CPUID when running
under Xen.

Since the TSC can also be initialized early when running as

x86/tsc: fetch frequency from CPUID when running on Xen

Introduce a helper to fetch the TSC frequency from CPUID when running
under Xen.

Since the TSC can also be initialized early when running as a Xen
guest pull out the call to tsc_init() from the
early_clock_source_init() handlers and place it in clock_init(), as
otherwise all handlers would call tsc_init() anyway.

Reviewed by: markj
Sponsored by: Citrix Systems R&D
Differential revision: https://reviews.freebsd.org/D34581

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x86: Probe the TSC frequency earlier

This lets us use the TSC to implement early DELAY, limiting the use of
the sometimes-unreliable 8254 PIT.

PR: 262155
Reviewed by: emaste
Tested by: emaste, mik

x86: Probe the TSC frequency earlier

This lets us use the TSC to implement early DELAY, limiting the use of
the sometimes-unreliable 8254 PIT.

PR: 262155
Reviewed by: emaste
Tested by: emaste, mike tancsa <mike@sentex.net>, Stefan Hegnauer <stefan.hegnauer@gmx.ch>
MFC after: 1 month
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D34367

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x86: Remove CTLFLAG_NEEDGIANT from sysctls.

MFC after: 2 weeks

x86: Perform late TSC calibration before LAPIC timer calibration

This ensures that LAPIC calibration is done using the correct tsc_freq
value, i.e., the one associated with the TSC timecounter. It

x86: Perform late TSC calibration before LAPIC timer calibration

This ensures that LAPIC calibration is done using the correct tsc_freq
value, i.e., the one associated with the TSC timecounter. It does mean
though that TSC calibration cannot use sbinuptime() to read the
reference timecounter, as timehands are not yet set up.

Reviewed by: kib, jhb
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D33209

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x86: Defer LAPIC calibration until after timecounters are available

This ensures that we have a good reference timecounter for performing
calibration.

Change lapic_setup to avoid configuring the ti

x86: Defer LAPIC calibration until after timecounters are available

This ensures that we have a good reference timecounter for performing
calibration.

Change lapic_setup to avoid configuring the timer when booting, and move
calibration and initial configuration to a new lapic routine,
lapic_calibrate_timer. This calibration will be initiated from
cpu_initclocks(), before an eventtimer is selected.

Reviewed by: kib, jhb
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D33206

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timer_restore is now unused, remove it

apm was the only consumer of timer_restore. Now that it's gone, this
can be removed.

x86: clean up empty lines in .c and .h files

Merge ^/head r358269 through r358399.

Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)

r357614 added CTLFLAG_NEEDGIANT to make it easier to find nodes that are
still not MPSAFE (or already are but aren’t properly mark

Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)

r357614 added CTLFLAG_NEEDGIANT to make it easier to find nodes that are
still not MPSAFE (or already are but aren’t properly marked).
Use it in preparation for a general review of all nodes.

This is non-functional change that adds annotations to SYSCTL_NODE and
SYSCTL_PROC nodes using one of the soon-to-be-required flags.

Mark all obvious cases as MPSAFE. All entries that haven't been marked
as MPSAFE before are by default marked as NEEDGIANT

Approved by: kib (mentor, blanket)
Commented by: kib, gallatin, melifaro
Differential Revision: https://reviews.freebsd.org/D23718

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Use separate mutexes for atrtc and i8254 locking. Change all the strange
un-function-like RTC_LOCK/UNLOCK macro usage into normal function calls.
Since there is no longer any need to handle register

Use separate mutexes for atrtc and i8254 locking. Change all the strange
un-function-like RTC_LOCK/UNLOCK macro usage into normal function calls.
Since there is no longer any need to handle register access from a debugger
context, those function calls can just be regular mutex lock/unlock calls.

Requested by: bde

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Add ISA PNP tables to ISA drivers. Fix a few incidental comments.
ACPI ISA PBP tables not tagged, there's bigger issues with them.

Merge ^/head r325999 through r326131.

sys: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for

sys: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.

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Merge ^/head r314420 through r314481.

Renumber copyright clause 4

Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is

Renumber copyright clause 4

Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is too pedantic, so give up on that point.

Submitted by: Jan Schaumann <jschauma@stevens.edu>
Pull Request: https://github.com/freebsd/freebsd/pull/96

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Merge ^/head r313644 through r313895.

Remove Micro Channel Architecture support. Of the commonly available
machines, only a few 486 machines that used it, and those haven't had
enough memory to run FreeBSD for quite some time (often limi

Remove Micro Channel Architecture support. Of the commonly available
machines, only a few 486 machines that used it, and those haven't had
enough memory to run FreeBSD for quite some time (often limited to
16MB).

Not to be confused with the Machine Check Architecture, which is still
very much alive and used (and untouched by this commit).

No Objection From: arch@

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