1 /* SPDX-License-Identifier: GPL-2.0 OR MIT */ 2 /************************************************************************** 3 * 4 * Copyright 2011-2012 VMware, Inc., Palo Alto, CA., USA 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sub license, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, 22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 24 * USE OR OTHER DEALINGS IN THE SOFTWARE. 25 * 26 **************************************************************************/ 27 28 #ifndef _VMWGFX_FENCE_H_ 29 30 #include <linux/dma-fence.h> 31 #include <linux/dma-fence-array.h> 32 33 #define VMW_FENCE_WAIT_TIMEOUT (5*HZ) 34 35 struct drm_device; 36 struct drm_file; 37 struct drm_pending_event; 38 39 struct vmw_private; 40 struct vmw_fence_manager; 41 42 struct vmw_fence_obj { 43 struct dma_fence base; 44 bool waiter_added; 45 struct list_head head; 46 void (*destroy)(struct vmw_fence_obj *fence); 47 }; 48 49 extern struct vmw_fence_manager * 50 vmw_fence_manager_init(struct vmw_private *dev_priv); 51 52 extern void vmw_fence_manager_takedown(struct vmw_fence_manager *fman); 53 54 static inline void 55 vmw_fence_obj_unreference(struct vmw_fence_obj **fence_p) 56 { 57 struct vmw_fence_obj *fence = *fence_p; 58 59 *fence_p = NULL; 60 if (fence) 61 dma_fence_put(&fence->base); 62 } 63 64 static inline struct vmw_fence_obj * 65 vmw_fence_obj_reference(struct vmw_fence_obj *fence) 66 { 67 if (fence) 68 dma_fence_get(&fence->base); 69 return fence; 70 } 71 72 u32 vmw_fences_update(struct vmw_fence_manager *fman); 73 74 extern bool vmw_fence_obj_signaled(struct vmw_fence_obj *fence); 75 76 extern int vmw_fence_obj_wait(struct vmw_fence_obj *fence, 77 bool lazy, 78 bool interruptible, unsigned long timeout); 79 80 extern int vmw_fence_create(struct vmw_fence_manager *fman, 81 uint32_t seqno, 82 struct vmw_fence_obj **p_fence); 83 84 extern int vmw_user_fence_create(struct drm_file *file_priv, 85 struct vmw_fence_manager *fman, 86 uint32_t sequence, 87 struct vmw_fence_obj **p_fence, 88 uint32_t *p_handle); 89 90 extern void vmw_fence_fifo_up(struct vmw_fence_manager *fman); 91 92 extern void vmw_fence_fifo_down(struct vmw_fence_manager *fman); 93 94 extern int vmw_fence_obj_wait_ioctl(struct drm_device *dev, void *data, 95 struct drm_file *file_priv); 96 97 extern int vmw_fence_obj_signaled_ioctl(struct drm_device *dev, void *data, 98 struct drm_file *file_priv); 99 100 extern int vmw_fence_obj_unref_ioctl(struct drm_device *dev, void *data, 101 struct drm_file *file_priv); 102 extern int vmw_fence_event_ioctl(struct drm_device *dev, void *data, 103 struct drm_file *file_priv); 104 extern int vmw_event_fence_action_queue(struct drm_file *filee_priv, 105 struct vmw_fence_obj *fence, 106 struct drm_pending_event *event, 107 uint32_t *tv_sec, 108 uint32_t *tv_usec, 109 bool interruptible); 110 #endif /* _VMWGFX_FENCE_H_ */ 111