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
12struct 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
23struct msm_fence_context * msm_fence_context_alloc(struct drm_device *dev,
24		const char *name);
25void msm_fence_context_free(struct msm_fence_context *fctx);
26
27int msm_wait_fence(struct msm_fence_context *fctx, uint32_t fence,
28		ktime_t *timeout, bool interruptible);
29void msm_update_fence(struct msm_fence_context *fctx, uint32_t fence);
30
31struct dma_fence * msm_fence_alloc(struct msm_fence_context *fctx);
32
33#endif