linux/drivers/gpu/drm/msm/msm_fence.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) 2013-2016 Red Hat
 * Author: Rob Clark <[email protected]>
 */

#ifndef __MSM_FENCE_H__
#define __MSM_FENCE_H__

#include "msm_drv.h"

/**
 * struct msm_fence_context - fence context for gpu
 *
 * Each ringbuffer has a single fence context, with the GPU writing an
 * incrementing fence seqno at the end of each submit
 */
struct msm_fence_context { … };

struct msm_fence_context * msm_fence_context_alloc(struct drm_device *dev,
		volatile uint32_t *fenceptr, const char *name);
void msm_fence_context_free(struct msm_fence_context *fctx);

bool msm_fence_completed(struct msm_fence_context *fctx, uint32_t fence);
void msm_update_fence(struct msm_fence_context *fctx, uint32_t fence);

struct dma_fence * msm_fence_alloc(void);
void msm_fence_init(struct dma_fence *fence, struct msm_fence_context *fctx);

static inline bool
fence_before(uint32_t a, uint32_t b)
{ … }

static inline bool
fence_after(uint32_t a, uint32_t b)
{ … }

#endif