linux-stable.git/drivers/gpu/drm/msm/msm_ringbuffer.c, branch linux-5.17.y

drm/msm: Remove struct_mutex usage

2021-11-28T17:50:33+00:00

The remaining struct_mutex usage is just to serialize various gpu
related things (submit/retire/recover/fault/etc), so replace
struct_mutex with gpu->lock.

Signed-off-by: Rob Clark 
Link: https://lore.kernel.org/r/20211109181117.591148-4-robdclark@gmail.com
Signed-off-by: Rob Clark

drm/msm: Use scheduler dependency handling

2021-08-30T08:59:31+00:00

drm_sched_job_init is already at the right place, so this boils down
to deleting code.

Signed-off-by: Daniel Vetter 
Cc: Rob Clark 
Reviewed-by: Rob Clark 
Cc: Sean Paul 
Cc: Sumit Semwal 
Cc: "Christian König" 
Cc: linux-arm-msm@vger.kernel.org
Cc: freedreno@lists.freedesktop.org
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Link: https://patchwork.freedesktop.org/patch/msgid/20210805104705.862416-13-daniel.vetter@ffwll.ch

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