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

   1/*
   2 * SPDX-License-Identifier: MIT
   3 *
   4 * Copyright © 2019 Intel Corporation
   5 */
   6
   7#include <drm/drm_file.h>
   8
   9#include "i915_drv.h"
  10#include "igt_mmap.h"
  11
  12unsigned long igt_mmap_node(struct drm_i915_private *i915,
  13                            struct drm_vma_offset_node *node,
  14                            unsigned long addr,
  15                            unsigned long prot,
  16                            unsigned long flags)
  17{
  18        struct file *file;
  19        int err;
  20
  21        /* Pretend to open("/dev/dri/card0") */
  22        file = mock_drm_getfile(i915->drm.primary, O_RDWR);
  23        if (IS_ERR(file))
  24                return PTR_ERR(file);
  25
  26        err = drm_vma_node_allow(node, file->private_data);
  27        if (err) {
  28                addr = err;
  29                goto out_file;
  30        }
  31
  32        addr = vm_mmap(file, addr, drm_vma_node_size(node) << PAGE_SHIFT,
  33                       prot, flags, drm_vma_node_offset_addr(node));
  34
  35        drm_vma_node_revoke(node, file->private_data);
  36out_file:
  37        fput(file);
  38        return addr;
  39}
  40