2 * Copyright (C) 2013-2016 Red Hat
3 * Author: Rob Clark <robdclark@gmail.com>
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.
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
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/>.
18 #ifndef __MSM_FENCE_H__
19 #define __MSM_FENCE_H__
23 struct msm_fence_context {
24 struct drm_device *dev;
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;
34 struct msm_fence_context * msm_fence_context_alloc(struct drm_device *dev,
36 void msm_fence_context_free(struct msm_fence_context *fctx);
38 int msm_wait_fence(struct msm_fence_context *fctx, uint32_t fence,
39 ktime_t *timeout, bool interruptible);
40 void msm_update_fence(struct msm_fence_context *fctx, uint32_t fence);
42 struct dma_fence * msm_fence_alloc(struct msm_fence_context *fctx);