drivers/gpu/drm/vmwgfx/vmwgfx_fence.h

   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         struct list_head seq_passed_actions;
  60         void (*destroy)(struct vmw_fence_obj *fence);
  61         wait_queue_head_t queue;
  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 extern void vmw_fence_obj_unreference(struct vmw_fence_obj **fence_p);
  70
  71 extern struct vmw_fence_obj *
  72 vmw_fence_obj_reference(struct vmw_fence_obj *fence);
  73
  74 extern void vmw_fences_update(struct vmw_fence_manager *fman);
  75
  76 extern bool vmw_fence_obj_signaled(struct vmw_fence_obj *fence);
  77
  78 extern int vmw_fence_obj_wait(struct vmw_fence_obj *fence,
  79                               bool lazy,
  80                               bool interruptible, unsigned long timeout);
  81
  82 extern void vmw_fence_obj_flush(struct vmw_fence_obj *fence);
  83
  84 extern int vmw_fence_create(struct vmw_fence_manager *fman,
  85                             uint32_t seqno,
  86                             struct vmw_fence_obj **p_fence);
  87
  88 extern int vmw_user_fence_create(struct drm_file *file_priv,
  89                                  struct vmw_fence_manager *fman,
  90                                  uint32_t sequence,
  91                                  struct vmw_fence_obj **p_fence,
  92                                  uint32_t *p_handle);
  93
  94 extern void vmw_fence_fifo_up(struct vmw_fence_manager *fman);
  95
  96 extern void vmw_fence_fifo_down(struct vmw_fence_manager *fman);
  97
  98 extern int vmw_fence_obj_wait_ioctl(struct drm_device *dev, void *data,
  99                                     struct drm_file *file_priv);
 100
 101 extern int vmw_fence_obj_signaled_ioctl(struct drm_device *dev, void *data,
 102                                         struct drm_file *file_priv);
 103
 104 extern int vmw_fence_obj_unref_ioctl(struct drm_device *dev, void *data,
 105                                      struct drm_file *file_priv);
 106 extern int vmw_fence_event_ioctl(struct drm_device *dev, void *data,
 107                                  struct drm_file *file_priv);
 108 extern void vmw_event_fence_fpriv_gone(struct vmw_fence_manager *fman,
 109                                        struct list_head *event_list);
 110 extern int vmw_event_fence_action_queue(struct drm_file *filee_priv,
 111                                         struct vmw_fence_obj *fence,
 112                                         struct drm_pending_event *event,
 113                                         uint32_t *tv_sec,
 114                                         uint32_t *tv_usec,
 115                                         bool interruptible);
 116 #endif /* _VMWGFX_FENCE_H_ */