text: /*
   * Copyright © 2012 Intel Corporation
   * Copyright © 2014 The Chromium OS Authors
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice (including the next
   * paragraph) shall be included in all copies or substantial portions of the
   * Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
   * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
   * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
   * IN THE SOFTWARE.
   *
   * Authors:
   *    Ben Widawsky <ben@bwidawsk.net>
   *
   */
  
  #ifndef _VGEM_DRV_H_
  #define _VGEM_DRV_H_
  
  #include <drm/drm_gem.h>
  #include <drm/drm_cache.h>
  
  #include <uapi/drm/vgem_drm.h>
  
  struct vgem_file {
  	struct idr fence_idr;
  	struct mutex fence_mutex;
  };
  
  #define to_vgem_bo(x) container_of(x, struct drm_vgem_gem_object, base)
  struct drm_vgem_gem_object {
  	struct drm_gem_object base;
  
  	struct page **pages;
  	unsigned int pages_pin_count;
  	struct mutex pages_lock;
  
  	struct sg_table *table;
  };
  
  int vgem_fence_open(struct vgem_file *file);
  int vgem_fence_attach_ioctl(struct drm_device *dev,
  			    void *data,
  			    struct drm_file *file);
  int vgem_fence_signal_ioctl(struct drm_device *dev,
  			    void *data,
  			    struct drm_file *file);
  void vgem_fence_close(struct vgem_file *file);
  
  #endif
  