src/sys/dev/firewire/firewirereg.h, branch stable/14

Internal scheduling priorities: Always use symbolic ones

2025-07-28T13:28:20+00:00

Replace priorities specified by a base priority and some hardcoded
offset value by symbolic constants.  Hardcoded offsets prevent changing
the difference between priorities without changing their relative
ordering, and is generally a dangerous practice since the resulting
priority may inadvertently belong to a different selection policy's
range.

Since RQ_PPQ is 4, differences of less than 4 are insignificant, so just
remove them.  These small differences have not been changed for years,
so it is likely they have no real meaning (besides having no practical
effect).  One can still consult the changes history to recover them if
ever needed.

No functional change (intended).

MFC after:      1 month
Event:          Kitchener-Waterloo Hackathon 202506
Sponsored by:   The FreeBSD Foundation
Differential Revision:  https://reviews.freebsd.org/D45390

(cherry picked from commit 8ecc41918066422d6788a67251b22d11a6efeddf)

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

2023-08-16T17:54:11+00:00

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

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

2017-11-27T14:52:40+00:00

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.

Remove obsolete compatibility glue and improve firewire code readability.

2014-09-27T16:50:21+00:00

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

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

2014-09-18T17:28:21+00:00

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

Protect transaction labels by its own lock to reduce lock contention.

2007-07-20T03:42:57+00:00

Approved by: re (rwatson)

Improve acquisition of transaction labels.

2007-07-15T13:00:29+00:00

- Keep last transaction label for each destination.
- If the next label is not free, just give up.
- This should reduce CPU load for TX on if_fwip under heavy load.

Approved by: re (hrs)

Add a tunable hw.firewire.phydma_enable.

2007-06-07T13:20:48+00:00

This is enabled by default.  It should be disabled for
those who are uneasy with peeking/poking from FireWire.

Please note sbp(4) and dcons(4) over FireWire need
this feature.

MFp4: MPSAFE firewire stack.

2007-06-06T14:31:36+00:00

- lock its own locks and drop Giant.
- create its own taskqueue thread.
- split interrupt routine
- use interrupt filter as a fast interrupt.
- run watchdog timer in taskqueue so that it should be
   serialized with the bottom half.
- add extra sanity check for transaction labels.
   disable ad-hoc workaround for unknown tlabels.
- add sleep/wakeup synchronization primitives
- don't reset OHCI in fwohci_stop()

MFp4: Simplify the bus probe routin using a kthread.

2007-05-21T02:18:50+00:00

MFC after: 1 week