drivers/gpu/drm/vgem/vgem_drv.h

   1 /*
   2  * Copyright © 2012 Intel Corporation
   3  * Copyright © 2014 The Chromium OS Authors
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  22  * IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Ben Widawsky <ben@bwidawsk.net>
  26  *
  27  */
  28
  29 #ifndef _VGEM_DRV_H_
  30 #define _VGEM_DRV_H_
  31
  32 #include <drm/drmP.h>
  33 #include <drm/drm_gem.h>
  34 #include <drm/drm_cache.h>
  35
  36 #include <uapi/drm/vgem_drm.h>
  37
  38 struct vgem_file {
  39         struct idr fence_idr;
  40         struct mutex fence_mutex;
  41 };
  42
  43 #define to_vgem_bo(x) container_of(x, struct drm_vgem_gem_object, base)
  44 struct drm_vgem_gem_object {
  45         struct drm_gem_object base;
  46
  47         struct page **pages;
  48         unsigned int pages_pin_count;
  49         struct mutex pages_lock;
  50
  51         struct sg_table *table;
  52 };
  53
  54 int vgem_fence_open(struct vgem_file *file);
  55 int vgem_fence_attach_ioctl(struct drm_device *dev,
  56                             void *data,
  57                             struct drm_file *file);
  58 int vgem_fence_signal_ioctl(struct drm_device *dev,
  59                             void *data,
  60                             struct drm_file *file);
  61 void vgem_fence_close(struct vgem_file *file);
  62
  63 #endif