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  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. /*
  115. extern int vmw_event_fence_action_queue(struct drm_file *filee_priv,
  116.                                         struct vmw_fence_obj *fence,
  117.                                         struct drm_pending_event *event,
  118.                                         uint32_t *tv_sec,
  119.                                         uint32_t *tv_usec,
  120.                                         bool interruptible);
  121. */
  122.  
  123. #endif /* _VMWGFX_FENCE_H_ */
  124.