LXR linux/drivers/gpu/drm/msm/msm

   1/*
   2 * Copyright (C) 2013-2016 Red Hat
   3 * Author: Rob Clark <robdclark@gmail.com>
   4 *
   5 * This program is free software; you can redistribute it and/or modify it
   6 * under the terms of the GNU General Public License version 2 as published by
   7 * the Free Software Foundation.
   8 *
   9 * This program is distributed in the hope that it will be useful, but WITHOUT
  10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12 * more details.
  13 *
  14 * You should have received a copy of the GNU General Public License along with
  15 * this program.  If not, see <http://www.gnu.org/licenses/>.
  16 */
  17
  18#ifndef __MSM_FENCE_H__
  19#define __MSM_FENCE_H__
  20
  21#include "msm_drv.h"
  22
  23struct msm_fence_context {
  24        struct drm_device *dev;
  25        const char *name;
  26        unsigned context;
  27        /* last_fence == completed_fence --> no pending work */
  28        uint32_t last_fence;          /* last assigned fence */
  29        uint32_t completed_fence;     /* last completed fence */
  30        wait_queue_head_t event;
  31        spinlock_t spinlock;
  32};
  33
  34struct msm_fence_context * msm_fence_context_alloc(struct drm_device *dev,
  35                const char *name);
  36void msm_fence_context_free(struct msm_fence_context *fctx);
  37
  38int msm_wait_fence(struct msm_fence_context *fctx, uint32_t fence,
  39                ktime_t *timeout, bool interruptible);
  40int msm_queue_fence_cb(struct msm_fence_context *fctx,
  41                struct msm_fence_cb *cb, uint32_t fence);
  42void msm_update_fence(struct msm_fence_context *fctx, uint32_t fence);
  43
  44struct fence * msm_fence_alloc(struct msm_fence_context *fctx);
  45
  46#endif
  47