diff options
| author |   Jordan Crouse <jcrouse@codeaurora.org> | 2017-10-20 11:07:01 -0600 |
|---|---|---|
| committer |   Rob Clark <robdclark@gmail.com> | 2017-10-28 11:01:38 -0400 |
| commit | b1fc2839d2f92d09da90d1e09156a73ddaba8a93 (patch) | |
| tree | 2cbc4001472d16c4290e7a4d8be6742d57c72d3c /drivers/gpu/drm/msm/adreno/adreno_gpu.h | |
| parent | drm/msm: Make the value of RB_CNTL (almost) generic (diff) | |
| download | linux-dev-b1fc2839d2f92d09da90d1e09156a73ddaba8a93.tar.xz linux-dev-b1fc2839d2f92d09da90d1e09156a73ddaba8a93.zip | |
drm/msm: Implement preemption for A5XX targets
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>
Diffstat (limited to 'drivers/gpu/drm/msm/adreno/adreno_gpu.h')
| -rw-r--r-- | drivers/gpu/drm/msm/adreno/adreno_gpu.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h index 3e9a1743f476..28e3de6e5f94 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h @@ -2,7 +2,7 @@ * Copyright (C) 2013 Red Hat * Author: Rob Clark <robdclark@gmail.com> * - * Copyright (c) 2014 The Linux Foundation. All rights reserved. + * Copyright (c) 2014,2017 The Linux Foundation. All rights reserved. * * 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 @@ -332,6 +332,11 @@ static inline void adreno_gpu_write64(struct adreno_gpu *gpu, adreno_gpu_write(gpu, hi, upper_32_bits(data)); } +static inline uint32_t get_wptr(struct msm_ringbuffer *ring) +{ + return (ring->cur - ring->start) % (MSM_GPU_RINGBUFFER_SZ >> 2); +} + /* * Given a register and a count, return a value to program into * REG_CP_PROTECT_REG(n) - this will block both reads and writes for _len |