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
34