LXR linux/drivers/gpu/drm/vmwgfx/vmwgfx

   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,
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  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
  32struct vmw_private;
  33
  34struct vmw_fence_manager;
  35
  36/**
  37 *
  38 *
  39 */
  40enum vmw_action_type {
  41        VMW_ACTION_EVENT = 0,
  42        VMW_ACTION_MAX
  43};
  44
  45struct 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
  52struct 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
  65extern struct vmw_fence_manager *
  66vmw_fence_manager_init(struct vmw_private *dev_priv);
  67
  68extern void vmw_fence_manager_takedown(struct vmw_fence_manager *fman);
  69
  70extern void vmw_fence_obj_unreference(struct vmw_fence_obj **fence_p);
  71
  72extern struct vmw_fence_obj *
  73vmw_fence_obj_reference(struct vmw_fence_obj *fence);
  74
  75extern void vmw_fences_update(struct vmw_fence_manager *fman);
  76
  77extern bool vmw_fence_obj_signaled(struct vmw_fence_obj *fence,
  78                                   uint32_t flags);
  79
  80extern int vmw_fence_obj_wait(struct vmw_fence_obj *fence, uint32_t flags,
  81                              bool lazy,
  82                              bool interruptible, unsigned long timeout);
  83
  84extern void vmw_fence_obj_flush(struct vmw_fence_obj *fence);
  85
  86extern 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
  91extern 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
  98extern void vmw_fence_fifo_up(struct vmw_fence_manager *fman);
  99
 100extern void vmw_fence_fifo_down(struct vmw_fence_manager *fman);
 101
 102extern int vmw_fence_obj_wait_ioctl(struct drm_device *dev, void *data,
 103                                    struct drm_file *file_priv);
 104
 105extern int vmw_fence_obj_signaled_ioctl(struct drm_device *dev, void *data,
 106                                        struct drm_file *file_priv);
 107
 108extern int vmw_fence_obj_unref_ioctl(struct drm_device *dev, void *data,
 109                                     struct drm_file *file_priv);
 110extern int vmw_fence_event_ioctl(struct drm_device *dev, void *data,
 111                                 struct drm_file *file_priv);
 112extern void vmw_event_fence_fpriv_gone(struct vmw_fence_manager *fman,
 113                                       struct list_head *event_list);
 114extern 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