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 34