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vmwgfx_fence.h revision 1.1.1.1.12.2 
      1 /**************************************************************************
      2  *
      3  * Copyright  2011 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 #define VMW_FENCE_WAIT_TIMEOUT (5*HZ)
     31 
     32 struct vmw_private;
     33 
     34 struct vmw_fence_manager;
     35 
     36 /**
     37  *
     38  *
     39  */
     40 enum vmw_action_type {
     41 	VMW_ACTION_EVENT = 0,
     42 	VMW_ACTION_MAX
     43 };
     44 
     45 struct vmw_fence_action {
     46 	struct list_head head;
     47 	enum vmw_action_type type;
     48 	void (*seq_passed) (struct vmw_fence_action *action);
     49 	void (*cleanup) (struct vmw_fence_action *action);
     50 };
     51 
     52 struct vmw_fence_obj {
     53 	struct kref kref;
     54 	u32 seqno;
     55 
     56 	struct vmw_fence_manager *fman;
     57 	struct list_head head;
     58 	uint32_t signaled;
     59 	uint32_t signal_mask;
     60 	struct list_head seq_passed_actions;
     61 	void (*destroy)(struct vmw_fence_obj *fence);
     62 	wait_queue_head_t queue;
     63 };
     64 
     65 extern struct vmw_fence_manager *
     66 vmw_fence_manager_init(struct vmw_private *dev_priv);
     67 
     68 extern void vmw_fence_manager_takedown(struct vmw_fence_manager *fman);
     69 
     70 extern void vmw_fence_obj_unreference(struct vmw_fence_obj **fence_p);
     71 
     72 extern struct vmw_fence_obj *
     73 vmw_fence_obj_reference(struct vmw_fence_obj *fence);
     74 
     75 extern void vmw_fences_update(struct vmw_fence_manager *fman);
     76 
     77 extern bool vmw_fence_obj_signaled(struct vmw_fence_obj *fence,
     78 				   uint32_t flags);
     79 
     80 extern int vmw_fence_obj_wait(struct vmw_fence_obj *fence, uint32_t flags,
     81 			      bool lazy,
     82 			      bool interruptible, unsigned long timeout);
     83 
     84 extern void vmw_fence_obj_flush(struct vmw_fence_obj *fence);
     85 
     86 extern int vmw_fence_create(struct vmw_fence_manager *fman,
     87 			    uint32_t seqno,
     88 			    uint32_t mask,
     89 			    struct vmw_fence_obj **p_fence);
     90 
     91 extern int vmw_user_fence_create(struct drm_file *file_priv,
     92 				 struct vmw_fence_manager *fman,
     93 				 uint32_t sequence,
     94 				 uint32_t mask,
     95 				 struct vmw_fence_obj **p_fence,
     96 				 uint32_t *p_handle);
     97 
     98 extern void vmw_fence_fifo_up(struct vmw_fence_manager *fman);
     99 
    100 extern void vmw_fence_fifo_down(struct vmw_fence_manager *fman);
    101 
    102 extern int vmw_fence_obj_wait_ioctl(struct drm_device *dev, void *data,
    103 				    struct drm_file *file_priv);
    104 
    105 extern int vmw_fence_obj_signaled_ioctl(struct drm_device *dev, void *data,
    106 					struct drm_file *file_priv);
    107 
    108 extern int vmw_fence_obj_unref_ioctl(struct drm_device *dev, void *data,
    109 				     struct drm_file *file_priv);
    110 extern int vmw_fence_event_ioctl(struct drm_device *dev, void *data,
    111 				 struct drm_file *file_priv);
    112 extern void vmw_event_fence_fpriv_gone(struct vmw_fence_manager *fman,
    113 				       struct list_head *event_list);
    114 extern int vmw_event_fence_action_queue(struct drm_file *filee_priv,
    115 					struct vmw_fence_obj *fence,
    116 					struct drm_pending_event *event,
    117 					uint32_t *tv_sec,
    118 					uint32_t *tv_usec,
    119 					bool interruptible);
    120 #endif /* _VMWGFX_FENCE_H_ */
    121