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 /** 43 * 44 * 45 */ 46 enum vmw_action_type { 47 VMW_ACTION_EVENT = 0, 48 VMW_ACTION_MAX 49 }; 50 51 struct vmw_fence_action { 52 struct list_head head; 53 enum vmw_action_type type; 54 void (*seq_passed) (struct vmw_fence_action *action); 55 void (*cleanup) (struct vmw_fence_action *action); 56 }; 57 58 struct vmw_fence_obj { 59 struct dma_fence base; 60 61 struct list_head head; 62 struct list_head seq_passed_actions; 63 void (*destroy)(struct vmw_fence_obj *fence); 64 }; 65 66 extern struct vmw_fence_manager * 67 vmw_fence_manager_init(struct vmw_private *dev_priv); 68 69 extern void vmw_fence_manager_takedown(struct vmw_fence_manager *fman); 70 71 static inline void 72 vmw_fence_obj_unreference(struct vmw_fence_obj **fence_p) 73 { 74 struct vmw_fence_obj *fence = *fence_p; 75 76 *fence_p = NULL; 77 if (fence) 78 dma_fence_put(&fence->base); 79 } 80 81 static inline struct vmw_fence_obj * 82 vmw_fence_obj_reference(struct vmw_fence_obj *fence) 83 { 84 if (fence) 85 dma_fence_get(&fence->base); 86 return fence; 87 } 88 89 extern void vmw_fences_update(struct vmw_fence_manager *fman); 90 91 extern bool vmw_fence_obj_signaled(struct vmw_fence_obj *fence); 92 93 extern int vmw_fence_obj_wait(struct vmw_fence_obj *fence, 94 bool lazy, 95 bool interruptible, unsigned long timeout); 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 int vmw_wait_dma_fence(struct vmw_fence_manager *fman, 108 struct dma_fence *fence); 109 110 extern void vmw_fence_fifo_up(struct vmw_fence_manager *fman); 111 112 extern void vmw_fence_fifo_down(struct vmw_fence_manager *fman); 113 114 extern int vmw_fence_obj_wait_ioctl(struct drm_device *dev, void *data, 115 struct drm_file *file_priv); 116 117 extern int vmw_fence_obj_signaled_ioctl(struct drm_device *dev, void *data, 118 struct drm_file *file_priv); 119 120 extern int vmw_fence_obj_unref_ioctl(struct drm_device *dev, void *data, 121 struct drm_file *file_priv); 122 extern int vmw_fence_event_ioctl(struct drm_device *dev, void *data, 123 struct drm_file *file_priv); 124 extern int vmw_event_fence_action_queue(struct drm_file *filee_priv, 125 struct vmw_fence_obj *fence, 126 struct drm_pending_event *event, 127 uint32_t *tv_sec, 128 uint32_t *tv_usec, 129 bool interruptible); 130 #endif /* _VMWGFX_FENCE_H_ */ 131