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 dma_fence * msm_fence_alloc(struct msm_fence_context *fctx);
45
46#endif