1 /************************************************************************** 2 * 3 * Copyright © 2011-2012 VMware, Inc., Palo Alto, CA., USA 4 * All Rights Reserved. 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/fence.h> 31 32 #define VMW_FENCE_WAIT_TIMEOUT (5*HZ) 33 34 struct vmw_private; 35 36 struct vmw_fence_manager; 37 38 /** 39 * 40 * 41 */ 42 enum vmw_action_type { 43 VMW_ACTION_EVENT = 0, 44 VMW_ACTION_MAX 45 }; 46 47 struct vmw_fence_action { 48 struct list_head head; 49 enum vmw_action_type type; 50 void (*seq_passed) (struct vmw_fence_action *action); 51 void (*cleanup) (struct vmw_fence_action *action); 52 }; 53 54 struct vmw_fence_obj { 55 struct fence base; 56 57 struct list_head head; 58 struct list_head seq_passed_actions; 59 void (*destroy)(struct vmw_fence_obj *fence); 60 }; 61 62 extern struct vmw_fence_manager * 63 vmw_fence_manager_init(struct vmw_private *dev_priv); 64 65 extern void vmw_fence_manager_takedown(struct vmw_fence_manager *fman); 66 67 static inline void 68 vmw_fence_obj_unreference(struct vmw_fence_obj **fence_p) 69 { 70 struct vmw_fence_obj *fence = *fence_p; 71 72 *fence_p = NULL; 73 if (fence) 74 fence_put(&fence->base); 75 } 76 77 static inline struct vmw_fence_obj * 78 vmw_fence_obj_reference(struct vmw_fence_obj *fence) 79 { 80 if (fence) 81 fence_get(&fence->base); 82 return fence; 83 } 84 85 extern void vmw_fences_update(struct vmw_fence_manager *fman); 86 87 extern bool vmw_fence_obj_signaled(struct vmw_fence_obj *fence); 88 89 extern int vmw_fence_obj_wait(struct vmw_fence_obj *fence, 90 bool lazy, 91 bool interruptible, unsigned long timeout); 92 93 extern void vmw_fence_obj_flush(struct vmw_fence_obj *fence); 94 95 extern int vmw_fence_create(struct vmw_fence_manager *fman, 96 uint32_t seqno, 97 struct vmw_fence_obj **p_fence); 98 99 extern int vmw_user_fence_create(struct drm_file *file_priv, 100 struct vmw_fence_manager *fman, 101 uint32_t sequence, 102 struct vmw_fence_obj **p_fence, 103 uint32_t *p_handle); 104 105 extern void vmw_fence_fifo_up(struct vmw_fence_manager *fman); 106 107 extern void vmw_fence_fifo_down(struct vmw_fence_manager *fman); 108 109 extern int vmw_fence_obj_wait_ioctl(struct drm_device *dev, void *data, 110 struct drm_file *file_priv); 111 112 extern int vmw_fence_obj_signaled_ioctl(struct drm_device *dev, void *data, 113 struct drm_file *file_priv); 114 115 extern int vmw_fence_obj_unref_ioctl(struct drm_device *dev, void *data, 116 struct drm_file *file_priv); 117 extern int vmw_fence_event_ioctl(struct drm_device *dev, void *data, 118 struct drm_file *file_priv); 119 extern void vmw_event_fence_fpriv_gone(struct vmw_fence_manager *fman, 120 struct list_head *event_list); 121 extern int vmw_event_fence_action_queue(struct drm_file *filee_priv, 122 struct vmw_fence_obj *fence, 123 struct drm_pending_event *event, 124 uint32_t *tv_sec, 125 uint32_t *tv_usec, 126 bool interruptible); 127 #endif /* _VMWGFX_FENCE_H_ */ 128