src/sys/dev/uart/uart.h, branch releng/14.3

dev/uart: Support 8-byte register access

2024-02-19T13:17:56+00:00

While we only support 4-byte registers in the uart code the physical
access may be to an 8-byte register. Support this as an option on
non-i386. On i386 we lack the needed 8-byte bus_space functions.

ACPI has an option for 8-byte register io width, and FDT can be given
any size. Support these sizes, even if we don't expect to see hardware
with an 8-byte io width.

Reviewed by:	imp
Sponsored by:	Arm Ltd
Differential Revision:	https://reviews.freebsd.org/D43374

(cherry picked from commit a9fc9d6d15f006feb6d7ddb036e020d5f9d19fce)

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

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

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

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

2023-05-12T16:44:03+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

uart: Remove sbbc reference

2022-10-01T00:26:45+00:00

sbbc support is for sparc64 only, which was removed in 58aa35d42975.

Sponsored by:		Netflix

arm: Catch up with Samsung S3C2xx0 code removal

2022-10-01T00:12:10+00:00

The code backing these uart_class was removed 7 years ago in
4648ee952520.

Sponsored by:		Netflix

scc(4)/uart(4): Remove obsolete support for Siemens SAB 82532

2020-12-26T12:48:06+00:00

It's no longer used since 58aa35d42975c298ca0adba705c042596303c9f5
and r357455 respectively.

Add busy detect quirk to list of console options

2018-07-22T23:32:21+00:00

This change allows one to set the busy_detect flag
required by the synopsys UART at the loader prompt.
This is needed by the EPYC 3000 SoC.

This will give users a working console up to the point where getty is required:
hw.uart.console="mm:0xfedc9000,rs:2,bd:1"

Reviewed by:	imp
MFC after:	4 weeks
Differential Revision:	https://reviews.freebsd.org/D16399

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.

Allow setting access-width for UART registers.

2017-02-27T20:08:42+00:00

This is required for FDT's standard "reg-io-width" property
(similar to "reg-shift" property) found in many DTS files.

This fixes operation on Altera Arria 10 SOC Development Kit,
where standard ns8250 uart allows 4-byte access only.

Reviewed by:	kan, marcel
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D9785

Remove pc98 support completely.

2017-01-28T02:22:15+00:00

I thank all developers and contributors for pc98.

Relnotes:	yes