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drm/msm: Implement preemption for A5XX targets

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Implement preemption for A5XX targets - this allows multiple
ringbuffers for different priorities with automatic preemption
of a lower priority ringbuffer if a higher one is ready.

Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Jordan Crouse
2017-10-20 11:07:01 -06:00
committed by Rob Clark
parent 4d87fc32df
commit b1fc2839d2
10 changed files with 599 additions and 20 deletions
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drivers/gpu/drm/msm/msm_ringbuffer.h
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@@ -40,6 +40,7 @@ struct msm_ringbuffer {
struct msm_rbmemptrs *memptrs;
uint64_t memptrs_iova;
struct msm_fence_context *fctx;
spinlock_t lock;
};
struct msm_ringbuffer *msm_ringbuffer_new(struct msm_gpu *gpu, int id,