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drm/panfrost: Expose a helper to trigger a GPU reset 

Expose a helper to trigger a GPU reset so we can easily trigger reset
operations outside the job timeout handler.

Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210630062751.2832545-8-boris.brezillon@collabora.com
This commit is contained in:
Boris Brezillon 2021-06-30 08:27:42 +02:00
parent 7319965fa1
commit 229f45788e
2 changed files with 9 additions and 3 deletions
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8
drivers/gpu/drm/panfrost/panfrost_device.h
View File

@ -244,4 +244,12 @@ enum drm_panfrost_exception_type {
const char *panfrost_exception_name(u32 exception_code);
static inline void
panfrost_device_schedule_reset(struct panfrost_device *pfdev)
{
/* Schedule a reset if there's no reset in progress. */
if (!atomic_xchg(&pfdev->reset.pending, 1))
schedule_work(&pfdev->reset.work);
}
#endif

4
drivers/gpu/drm/panfrost/panfrost_job.c
View File

@ -447,9 +447,7 @@ static enum drm_gpu_sched_stat panfrost_job_timedout(struct drm_sched_job
if (!panfrost_scheduler_stop(&pfdev->js->queue[js], sched_job))
return DRM_GPU_SCHED_STAT_NOMINAL;
/* Schedule a reset if there's no reset in progress. */
if (!atomic_xchg(&pfdev->reset.pending, 1))
schedule_work(&pfdev->reset.work);
panfrost_device_schedule_reset(pfdev);
return DRM_GPU_SCHED_STAT_NOMINAL;
}