1 /* $NetBSD: vmwgfx_fence.h,v 1.2 2018/08/27 04:58:37 riastradh Exp $ */ 2 3 /************************************************************************** 4 * 5 * Copyright © 2011-2012 VMware, Inc., Palo Alto, CA., USA 6 * All Rights Reserved. 7 * 8 * Permission is hereby granted, free of charge, to any person obtaining a 9 * copy of this software and associated documentation files (the 10 * "Software"), to deal in the Software without restriction, including 11 * without limitation the rights to use, copy, modify, merge, publish, 12 * distribute, sub license, and/or sell copies of the Software, and to 13 * permit persons to whom the Software is furnished to do so, subject to 14 * the following conditions: 15 * 16 * The above copyright notice and this permission notice (including the 17 * next paragraph) shall be included in all copies or substantial portions 18 * of the Software. 19 * 20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 23 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, 24 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 25 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 26 * USE OR OTHER DEALINGS IN THE SOFTWARE. 27 * 28 **************************************************************************/ 29 30 #ifndef _VMWGFX_FENCE_H_ 31 32 #include <linux/fence.h> 33 34 #define VMW_FENCE_WAIT_TIMEOUT (5*HZ) 35 36 struct vmw_private; 37 38 struct vmw_fence_manager; 39 40 /** 41 * 42 * 43 */ 44 enum vmw_action_type { 45 VMW_ACTION_EVENT = 0, 46 VMW_ACTION_MAX 47 }; 48 49 struct vmw_fence_action { 50 struct list_head head; 51 enum vmw_action_type type; 52 void (*seq_passed) (struct vmw_fence_action *action); 53 void (*cleanup) (struct vmw_fence_action *action); 54 }; 55 56 struct vmw_fence_obj { 57 struct fence base; 58 59 struct list_head head; 60 struct list_head seq_passed_actions; 61 void (*destroy)(struct vmw_fence_obj *fence); 62 }; 63 64 extern struct vmw_fence_manager * 65 vmw_fence_manager_init(struct vmw_private *dev_priv); 66 67 extern void vmw_fence_manager_takedown(struct vmw_fence_manager *fman); 68 69 static inline void 70 vmw_fence_obj_unreference(struct vmw_fence_obj **fence_p) 71 { 72 struct vmw_fence_obj *fence = *fence_p; 73 74 *fence_p = NULL; 75 if (fence) 76 fence_put(&fence->base); 77 } 78 79 static inline struct vmw_fence_obj * 80 vmw_fence_obj_reference(struct vmw_fence_obj *fence) 81 { 82 if (fence) 83 fence_get(&fence->base); 84 return fence; 85 } 86 87 extern void vmw_fences_update(struct vmw_fence_manager *fman); 88 89 extern bool vmw_fence_obj_signaled(struct vmw_fence_obj *fence); 90 91 extern int vmw_fence_obj_wait(struct vmw_fence_obj *fence, 92 bool lazy, 93 bool interruptible, unsigned long timeout); 94 95 extern void vmw_fence_obj_flush(struct vmw_fence_obj *fence); 96 97 extern int vmw_fence_create(struct vmw_fence_manager *fman, 98 uint32_t seqno, 99 struct vmw_fence_obj **p_fence); 100 101 extern int vmw_user_fence_create(struct drm_file *file_priv, 102 struct vmw_fence_manager *fman, 103 uint32_t sequence, 104 struct vmw_fence_obj **p_fence, 105 uint32_t *p_handle); 106 107 extern void vmw_fence_fifo_up(struct vmw_fence_manager *fman); 108 109 extern void vmw_fence_fifo_down(struct vmw_fence_manager *fman); 110 111 extern int vmw_fence_obj_wait_ioctl(struct drm_device *dev, void *data, 112 struct drm_file *file_priv); 113 114 extern int vmw_fence_obj_signaled_ioctl(struct drm_device *dev, void *data, 115 struct drm_file *file_priv); 116 117 extern int vmw_fence_obj_unref_ioctl(struct drm_device *dev, void *data, 118 struct drm_file *file_priv); 119 extern int vmw_fence_event_ioctl(struct drm_device *dev, void *data, 120 struct drm_file *file_priv); 121 extern void vmw_event_fence_fpriv_gone(struct vmw_fence_manager *fman, 122 struct list_head *event_list); 123 extern int vmw_event_fence_action_queue(struct drm_file *filee_priv, 124 struct vmw_fence_obj *fence, 125 struct drm_pending_event *event, 126 uint32_t *tv_sec, 127 uint32_t *tv_usec, 128 bool interruptible); 129 #endif /* _VMWGFX_FENCE_H_ */ 130