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

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

Fix unused variable warning in fwohci.c

With clang 15, the following -Werror warning is produced:

sys/dev/firewire/fwohci.c:2762:23: error: variable 'pcnt' set but not used [-Werror,-Wunused-bu

Fix unused variable warning in fwohci.c

With clang 15, the following -Werror warning is produced:

sys/dev/firewire/fwohci.c:2762:23: error: variable 'pcnt' set but not used [-Werror,-Wunused-but-set-variable]
int len, plen, hlen, pcnt, offset;
^

The 'pcnt' variable is eventually used only in an #if 0'd block,
obviously meant for debugging. Ensure that 'pcnt' is only declared and
used when COUNT_PACKETS is defined, so the debugging can be easily
turned on later, if desired.

MFC after: 3 days

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firewire: plug set-but-not-used vars

Sponsored by: Rubicon Communications, LLC ("Netgate")

fwohci: Cast bitfield to uint32_t before passing it to roundup2().

The fallback for __align_up() used by roundup2() uses __typeof__()
which doesn't work for bitfields. This fixes the build on GCC w

fwohci: Cast bitfield to uint32_t before passing it to roundup2().

The fallback for __align_up() used by roundup2() uses __typeof__()
which doesn't work for bitfields. This fixes the build on GCC which
uses the fallback.

Reviewed by: arichardson, markj
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D28599

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MFHead @348740

Sponsored by: The FreeBSD Foundation

Extract eventfilter declarations to sys/_eventfilter.h

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

Extract eventfilter declarations to sys/_eventfilter.h

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.

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sys/dev: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error

sys/dev: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

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.

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Merge ^/head r308870 through r309105.

fwohci: report whether PhysicalUpperBound register is implemented

Please see section 5.15 of 1394 OHCI Specification.
If the register is not implemented, then the physical response unit is
limited t

fwohci: report whether PhysicalUpperBound register is implemented

Please see section 5.15 of 1394 OHCI Specification.
If the register is not implemented, then the physical response unit is
limited to the first 4GB of the physical memory.
In that case the non-cooperative debugging over firewire (using /dev/fwmem)
can not be expected to work if a target has more RAM than that.
The method is described in gdb.4 and the Developer's Handbook.

It seems that most of the consumer hardware does not implement
PhysicalUpperBound register.

MFC after: 1 week

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Remove NULL checks after M_WAITOK allocations from firewire.

MFC after: 1 month
Sponsored by: The FreeBSD Foundation

sys/dev: minor spelling fixes.

Most affect comments, very few have user-visible effects.

Merge sync of head

Merge from HEAD

Merge ^/head r277327 through r277718.

MFhead @ r277555

Fix remote DMA based firewire debugging when targeting
systems with more than 4GB of physical memory.

To remotely debug the system 'stealthy' which has a kernel
with this change installed and firewi

Fix remote DMA based firewire debugging when targeting
systems with more than 4GB of physical memory.

To remotely debug the system 'stealthy' which has a kernel
with this change installed and firewire properly configured:

% fwcontrol -m stealthy (or stealthy's firewire EUI64)
% kgdb kernel /dev/fwmem0.0

sys/dev/firewire/fwohci.c:
Rather than hard code the upper limit for hw based
automatic responses to remote DMA requests at 4GB,
program the hardware using Maxmem, the page number
one higher than the highest physical page detected
in the system.

While here, garbage collect more useless splfw()
calls.

Submitted by: gibbs
MFC after: 1 week
Sponsored by: Spectra Logic
MFSpectraBSD: 1110994 on 2015/01/06

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Merge from head@274682

IFC @r272481

Sync to HEAD@r272516.

Do not pass whole descriptor block size as align to fwdma_malloc_multiseg

Do not pass wrong alignment value to fwdma_malloc_multiseg and ultimately
to contigalloc. In addition to being wrong, this c

Do not pass whole descriptor block size as align to fwdma_malloc_multiseg

Do not pass wrong alignment value to fwdma_malloc_multiseg and ultimately
to contigalloc. In addition to being wrong, this causes insta-panic in
certain cases due to safety assertion - the alignment is required to be
the power of two and the value we calculate here seldom is.

MFC after: 1 month

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Remove obsolete compatibility glue and improve firewire code readability.

Commit my version of style(9) pass over the firewire code. Now that
other people have started changing the code carrying thi

Remove obsolete compatibility glue and improve firewire code readability.

Commit my version of style(9) pass over the firewire code. Now that
other people have started changing the code carrying this is as a
local patch is not longer a viable option.

MFC after: 1 month

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IFC @r271887

Start the process of cleaning up FreeBSD's firewire driver.

sys/dev/firewire/firewire.c:
sys/dev/firewire/firewire.h:
sys/dev/firewire/firewirereg.h:
sys/dev/firewire/fwcrom.c:
sys/dev/firewire/fwde

Start the process of cleaning up FreeBSD's firewire driver.

sys/dev/firewire/firewire.c:
sys/dev/firewire/firewire.h:
sys/dev/firewire/firewirereg.h:
sys/dev/firewire/fwcrom.c:
sys/dev/firewire/fwdev.c:
sys/dev/firewire/fwdma.c:
sys/dev/firewire/fwmem.c:
sys/dev/firewire/fwohci.c:
sys/dev/firewire/fwohci_pci.c:
sys/dev/firewire/fwohcivar.h:
sys/dev/firewire/if_fwe.c:
sys/dev/firewire/if_fwip.c:
sys/dev/firewire/sbp.c:
sys/dev/firewire/sbp_targ.c:
Unifdef the code, removing support for DragonflyBSD
and FreeBSD prior to version 5.

Submitted by: gibbs
MFC after: 1 month
Sponsored by: Spectra Logic
MFSpectraBSD: 1081188 on 2014/08/01

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Silence noisy firewire logging.

MFC after: 1 month
Sponsored by: Spectra Logic
MFSpectraBSD: 974594 on 2013/08/02

IFC @r269962

Submitted by: Anish Gupta (akgupt3@gmail.com)