LXR linux/drivers/gpu/drm/i915/selftests/mock

   1/*
   2 * Copyright © 2017 Intel Corporation
   3 *
   4 * Permission is hereby granted, free of charge, to any person obtaining a
   5 * copy of this software and associated documentation files (the "Software"),
   6 * to deal in the Software without restriction, including without limitation
   7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8 * and/or sell copies of the Software, and to permit persons to whom the
   9 * Software is furnished to do so, subject to the following conditions:
  10 *
  11 * The above copyright notice and this permission notice (including the next
  12 * paragraph) shall be included in all copies or substantial portions of the
  13 * Software.
  14 *
  15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21 * IN THE SOFTWARE.
  22 *
  23 */
  24
  25#include "mock_drm.h"
  26
  27struct drm_file *mock_file(struct drm_i915_private *i915)
  28{
  29        struct file *filp;
  30        struct inode *inode;
  31        struct drm_file *file;
  32        int err;
  33
  34        inode = kzalloc(sizeof(*inode), GFP_KERNEL);
  35        if (!inode) {
  36                err = -ENOMEM;
  37                goto err;
  38        }
  39
  40        inode->i_rdev = i915->drm.primary->index;
  41
  42        filp = kzalloc(sizeof(*filp), GFP_KERNEL);
  43        if (!filp) {
  44                err = -ENOMEM;
  45                goto err_inode;
  46        }
  47
  48        err = drm_open(inode, filp);
  49        if (err)
  50                goto err_filp;
  51
  52        file = filp->private_data;
  53        memset(&file->filp, POISON_INUSE, sizeof(file->filp));
  54        file->authenticated = true;
  55
  56        kfree(filp);
  57        kfree(inode);
  58        return file;
  59
  60err_filp:
  61        kfree(filp);
  62err_inode:
  63        kfree(inode);
  64err:
  65        return ERR_PTR(err);
  66}
  67
  68void mock_file_free(struct drm_i915_private *i915, struct drm_file *file)
  69{
  70        struct file filp = { .private_data = file };
  71
  72        drm_release(NULL, &filp);
  73}
  74