LXR linux/drivers/gpu/drm/vgem/vgem

   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/drm_gem.h>
  33#include <drm/drm_cache.h>
  34
  35#include <uapi/drm/vgem_drm.h>
  36
  37struct vgem_file {
  38        struct idr fence_idr;
  39        struct mutex fence_mutex;
  40};
  41
  42#define to_vgem_bo(x) container_of(x, struct drm_vgem_gem_object, base)
  43struct drm_vgem_gem_object {
  44        struct drm_gem_object base;
  45
  46        struct page **pages;
  47        unsigned int pages_pin_count;
  48        struct mutex pages_lock;
  49
  50        struct sg_table *table;
  51};
  52
  53int vgem_fence_open(struct vgem_file *file);
  54int vgem_fence_attach_ioctl(struct drm_device *dev,
  55                            void *data,
  56                            struct drm_file *file);
  57int vgem_fence_signal_ioctl(struct drm_device *dev,
  58                            void *data,
  59                            struct drm_file *file);
  60void vgem_fence_close(struct vgem_file *file);
  61
  62#endif
  63