linux-stable.git/drivers/gpu/drm/msm/msm_ringbuffer.c, branch v5.15

Merge tag 'drm-msm-next-2021-07-28' of https://gitlab.freedesktop.org/drm/msm into drm-next

2021-07-30T06:24:01+00:00

An early pull for v5.15 (there'll be more coming in a week or two),
consisting of the drm/scheduler conversion and a couple other small
series that one was based one.  Mostly sending this now because IIUC
danvet wanted it in drm-next so he could rebase on it.  (Daniel, if
you disagree then speak up, and I'll instead include this in the main
pull request once that is ready.)

This also has a core patch to drop drm_gem_object_put_locked() now
that the last use of it is removed.

[airlied: add NULL to drm_sched_init]

Signed-off-by: Dave Airlie 
From: Rob Clark 
Link: https://patchwork.freedesktop.org/patch/msgid/CAF6AEGumRk7H88bqV=H9Fb1SM0zPBo5B7NsCU3jFFKBYxf5k+Q@mail.gmail.com

drm/msm: Conversion to drm scheduler

2021-07-28T16:19:00+00:00

For existing adrenos, there is one or more ringbuffer, depending on
whether preemption is supported.  When preemption is supported, each
ringbuffer has it's own priority.  A submitqueue (which maps to a
gl context or vk queue in userspace) is mapped to a specific ring-
buffer at creation time, based on the submitqueue's priority.

Each ringbuffer has it's own drm_gpu_scheduler.  Each submitqueue
maps to a drm_sched_entity.  And each submit maps to a drm_sched_job.

Closes: https://gitlab.freedesktop.org/drm/msm/-/issues/4
Signed-off-by: Rob Clark 
Acked-by: Christian König 
Link: https://lore.kernel.org/r/20210728010632.2633470-10-robdclark@gmail.com
Signed-off-by: Rob Clark

drm/msm: drop drm_gem_object_put_locked()

2021-07-28T01:09:18+00:00

No idea why we were still using this.  It certainly hasn't been needed
for some time.  So drop the pointless twin codepaths.

Signed-off-by: Rob Clark 
Acked-by: Christian König 
Link: https://lore.kernel.org/r/20210728010632.2633470-4-robdclark@gmail.com
Signed-off-by: Rob Clark

drm/msm: Docs and misc cleanup

2021-07-28T01:09:17+00:00

Fix a couple incorrect or misspelt comments, and add submitqueue doc
comment.

Signed-off-by: Rob Clark 
Acked-by: Christian König 
Link: https://lore.kernel.org/r/20210728010632.2633470-2-robdclark@gmail.com
Signed-off-by: Rob Clark

drm/msm: Let fences read directly from memptrs

2021-07-28T00:53:51+00:00

Let dma_fence::signaled, etc, read directly from the address that the hw
is writing with updated completed fence seqno, so we can potentially
notice that the fence is signaled sooner.

Plus add some docs.

Signed-off-by: Rob Clark 
Link: https://lore.kernel.org/r/20210726144359.2179302-2-robdclark@gmail.com
Signed-off-by: Rob Clark

drm/msm: Protect ring->submits with it's own lock

2020-11-05T00:00:56+00:00

One less place to rely on dev->struct_mutex.

Signed-off-by: Rob Clark 
Reviewed-by: Jordan Crouse 
Reviewed-by: Kristian H. Kristensen 
Signed-off-by: Rob Clark

drm/msm: Document and rename preempt_lock

2020-11-05T00:00:56+00:00

Before adding another lock, give ring->lock a more descriptive name.

Signed-off-by: Rob Clark 
Reviewed-by: Jordan Crouse 
Reviewed-by: Kristian H. Kristensen 
Signed-off-by: Rob Clark

drm/msm: Enable expanded apriv support for a650

2020-09-04T19:14:07+00:00

a650 supports expanded apriv support that allows us to map critical buffers
(ringbuffer and memstore) as as privileged to protect them from corruption.

Cc: stable@vger.kernel.org
Signed-off-by: Jordan Crouse 
Signed-off-by: Rob Clark

drm/msm/gpu: make ringbuffer readonly

2020-08-17T19:25:22+00:00

The GPU has no business writing into the ringbuffer, let's make it
readonly to the GPU.

Fixes: 7198e6b03155 ("drm/msm: add a3xx gpu support")
Signed-off-by: Rob Clark 
Reviewed-by: Jordan Crouse 
Signed-off-by: Rob Clark

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234

2019-06-19T15:09:07+00:00

Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation this program is
  distributed in the hope that it will be useful but without any
  warranty without even the implied warranty of merchantability or
  fitness for a particular purpose see the gnu general public license
  for more details you should have received a copy of the gnu general
  public license along with this program if not see http www gnu org
  licenses

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 503 file(s).

Signed-off-by: Thomas Gleixner 
Reviewed-by: Alexios Zavras 
Reviewed-by: Allison Randal 
Reviewed-by: Enrico Weigelt 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190602204653.811534538@linutronix.de
Signed-off-by: Greg Kroah-Hartman