drivers/gpu/drm/msm/msm_fence.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (C) 2013-2016 Red Hat
   4  * Author: Rob Clark <robdclark@gmail.com>
   5  */
   6
   7 #ifndef __MSM_FENCE_H__
   8 #define __MSM_FENCE_H__
   9
  10 #include "msm_drv.h"
  11
  12 struct msm_fence_context {
  13         struct drm_device *dev;
  14         char name[32];
  15         unsigned context;
  16         /* last_fence == completed_fence --> no pending work */
  17         uint32_t last_fence;          /* last assigned fence */
  18         uint32_t completed_fence;     /* last completed fence */
  19         wait_queue_head_t event;
  20         spinlock_t spinlock;
  21 };
  22
  23 struct msm_fence_context * msm_fence_context_alloc(struct drm_device *dev,
  24                 const char *name);
  25 void msm_fence_context_free(struct msm_fence_context *fctx);
  26
  27 int msm_wait_fence(struct msm_fence_context *fctx, uint32_t fence,
  28                 ktime_t *timeout, bool interruptible);
  29 void msm_update_fence(struct msm_fence_context *fctx, uint32_t fence);
  30
  31 struct dma_fence * msm_fence_alloc(struct msm_fence_context *fctx);
  32
  33 #endif