drivers/gpu/drm/i915/selftests/igt_mmap.c

   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
  12 unsigned 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);
  36 out_file:
  37         fput(file);
  38         return addr;
  39 }