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

   1/* SPDX-License-Identifier: GPL-2.0 OR MIT */
   2/**************************************************************************
   3 *
   4 * Copyright 2011-2012 VMware, Inc., Palo Alto, CA., USA
   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/dma-fence.h>
  31#include <linux/dma-fence-array.h>
  32
  33#define VMW_FENCE_WAIT_TIMEOUT (5*HZ)
  34
  35struct drm_device;
  36struct drm_file;
  37struct drm_pending_event;
  38
  39struct vmw_private;
  40struct vmw_fence_manager;
  41
  42/**
  43 *
  44 *
  45 */
  46enum vmw_action_type {
  47        VMW_ACTION_EVENT = 0,
  48        VMW_ACTION_MAX
  49};
  50
  51struct vmw_fence_action {
  52        struct list_head head;
  53        enum vmw_action_type type;
  54        void (*seq_passed) (struct vmw_fence_action *action);
  55        void (*cleanup) (struct vmw_fence_action *action);
  56};
  57
  58struct vmw_fence_obj {
  59        struct dma_fence base;
  60
  61        struct list_head head;
  62        struct list_head seq_passed_actions;
  63        void (*destroy)(struct vmw_fence_obj *fence);
  64};
  65
  66extern struct vmw_fence_manager *
  67vmw_fence_manager_init(struct vmw_private *dev_priv);
  68
  69extern void vmw_fence_manager_takedown(struct vmw_fence_manager *fman);
  70
  71static inline void
  72vmw_fence_obj_unreference(struct vmw_fence_obj **fence_p)
  73{
  74        struct vmw_fence_obj *fence = *fence_p;
  75
  76        *fence_p = NULL;
  77        if (fence)
  78                dma_fence_put(&fence->base);
  79}
  80
  81static inline struct vmw_fence_obj *
  82vmw_fence_obj_reference(struct vmw_fence_obj *fence)
  83{
  84        if (fence)
  85                dma_fence_get(&fence->base);
  86        return fence;
  87}
  88
  89extern void vmw_fences_update(struct vmw_fence_manager *fman);
  90
  91extern bool vmw_fence_obj_signaled(struct vmw_fence_obj *fence);
  92
  93extern int vmw_fence_obj_wait(struct vmw_fence_obj *fence,
  94                              bool lazy,
  95                              bool interruptible, unsigned long timeout);
  96
  97extern int vmw_fence_create(struct vmw_fence_manager *fman,
  98                            uint32_t seqno,
  99                            struct vmw_fence_obj **p_fence);
 100
 101extern int vmw_user_fence_create(struct drm_file *file_priv,
 102                                 struct vmw_fence_manager *fman,
 103                                 uint32_t sequence,
 104                                 struct vmw_fence_obj **p_fence,
 105                                 uint32_t *p_handle);
 106
 107extern int vmw_wait_dma_fence(struct vmw_fence_manager *fman,
 108                              struct dma_fence *fence);
 109
 110extern void vmw_fence_fifo_up(struct vmw_fence_manager *fman);
 111
 112extern void vmw_fence_fifo_down(struct vmw_fence_manager *fman);
 113
 114extern int vmw_fence_obj_wait_ioctl(struct drm_device *dev, void *data,
 115                                    struct drm_file *file_priv);
 116
 117extern int vmw_fence_obj_signaled_ioctl(struct drm_device *dev, void *data,
 118                                        struct drm_file *file_priv);
 119
 120extern int vmw_fence_obj_unref_ioctl(struct drm_device *dev, void *data,
 121                                     struct drm_file *file_priv);
 122extern int vmw_fence_event_ioctl(struct drm_device *dev, void *data,
 123                                 struct drm_file *file_priv);
 124extern int vmw_event_fence_action_queue(struct drm_file *filee_priv,
 125                                        struct vmw_fence_obj *fence,
 126                                        struct drm_pending_event *event,
 127                                        uint32_t *tv_sec,
 128                                        uint32_t *tv_usec,
 129                                        bool interruptible);
 130#endif /* _VMWGFX_FENCE_H_ */
 131