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 23 struct 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 34 struct msm_fence_context * msm_fence_context_alloc(struct drm_device *dev, 35 const char *name); 36 void msm_fence_context_free(struct msm_fence_context *fctx); 37 38 int msm_wait_fence(struct msm_fence_context *fctx, uint32_t fence, 39 ktime_t *timeout, bool interruptible); 40 int msm_queue_fence_cb(struct msm_fence_context *fctx, 41 struct msm_fence_cb *cb, uint32_t fence); 42 void msm_update_fence(struct msm_fence_context *fctx, uint32_t fence); 43 44 struct dma_fence * msm_fence_alloc(struct msm_fence_context *fctx); 45 46 #endif 47