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,
  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/fence.h>
  31
  32#define VMW_FENCE_WAIT_TIMEOUT (5*HZ)
  33
  34struct vmw_private;
  35
  36struct vmw_fence_manager;
  37
  38/**
  39 *
  40 *
  41 */
  42enum vmw_action_type {
  43        VMW_ACTION_EVENT = 0,
  44        VMW_ACTION_MAX
  45};
  46
  47struct vmw_fence_action {
  48        struct list_head head;
  49        enum vmw_action_type type;
  50        void (*seq_passed) (struct vmw_fence_action *action);
  51        void (*cleanup) (struct vmw_fence_action *action);
  52};
  53
  54struct vmw_fence_obj {
  55        struct fence base;
  56
  57        struct list_head head;
  58        struct list_head seq_passed_actions;
  59        void (*destroy)(struct vmw_fence_obj *fence);
  60};
  61
  62extern struct vmw_fence_manager *
  63vmw_fence_manager_init(struct vmw_private *dev_priv);
  64
  65extern void vmw_fence_manager_takedown(struct vmw_fence_manager *fman);
  66
  67static inline void
  68vmw_fence_obj_unreference(struct vmw_fence_obj **fence_p)
  69{
  70        struct vmw_fence_obj *fence = *fence_p;
  71
  72        *fence_p = NULL;
  73        if (fence)
  74                fence_put(&fence->base);
  75}
  76
  77static inline struct vmw_fence_obj *
  78vmw_fence_obj_reference(struct vmw_fence_obj *fence)
  79{
  80        if (fence)
  81                fence_get(&fence->base);
  82        return fence;
  83}
  84
  85extern void vmw_fences_update(struct vmw_fence_manager *fman);
  86
  87extern bool vmw_fence_obj_signaled(struct vmw_fence_obj *fence);
  88
  89extern int vmw_fence_obj_wait(struct vmw_fence_obj *fence,
  90                              bool lazy,
  91                              bool interruptible, unsigned long timeout);
  92
  93extern void vmw_fence_obj_flush(struct vmw_fence_obj *fence);
  94
  95extern int vmw_fence_create(struct vmw_fence_manager *fman,
  96                            uint32_t seqno,
  97                            struct vmw_fence_obj **p_fence);
  98
  99extern int vmw_user_fence_create(struct drm_file *file_priv,
 100                                 struct vmw_fence_manager *fman,
 101                                 uint32_t sequence,
 102                                 struct vmw_fence_obj **p_fence,
 103                                 uint32_t *p_handle);
 104
 105extern void vmw_fence_fifo_up(struct vmw_fence_manager *fman);
 106
 107extern void vmw_fence_fifo_down(struct vmw_fence_manager *fman);
 108
 109extern int vmw_fence_obj_wait_ioctl(struct drm_device *dev, void *data,
 110                                    struct drm_file *file_priv);
 111
 112extern int vmw_fence_obj_signaled_ioctl(struct drm_device *dev, void *data,
 113                                        struct drm_file *file_priv);
 114
 115extern int vmw_fence_obj_unref_ioctl(struct drm_device *dev, void *data,
 116                                     struct drm_file *file_priv);
 117extern int vmw_fence_event_ioctl(struct drm_device *dev, void *data,
 118                                 struct drm_file *file_priv);
 119extern void vmw_event_fence_fpriv_gone(struct vmw_fence_manager *fman,
 120                                       struct list_head *event_list);
 121extern int vmw_event_fence_action_queue(struct drm_file *filee_priv,
 122                                        struct vmw_fence_obj *fence,
 123                                        struct drm_pending_event *event,
 124                                        uint32_t *tv_sec,
 125                                        uint32_t *tv_usec,
 126                                        bool interruptible);
 127#endif /* _VMWGFX_FENCE_H_ */
 128