1 /*
2 * SPDX-License-Identifier: MIT
3 *
4 * Copyright © 2016 Intel Corporation
5 */
6
7 #include "i915_selftest.h"
8
9 #include "selftests/mock_gem_device.h"
10
mock_phys_object(void * arg)11 static int mock_phys_object(void *arg)
12 {
13 struct drm_i915_private *i915 = arg;
14 struct drm_i915_gem_object *obj;
15 int err;
16
17 /* Create an object and bind it to a contiguous set of physical pages,
18 * i.e. exercise the i915_gem_object_phys API.
19 */
20
21 obj = i915_gem_object_create_shmem(i915, PAGE_SIZE);
22 if (IS_ERR(obj)) {
23 err = PTR_ERR(obj);
24 pr_err("i915_gem_object_create failed, err=%d\n", err);
25 goto out;
26 }
27
28 mutex_lock(&i915->drm.struct_mutex);
29 err = i915_gem_object_attach_phys(obj, PAGE_SIZE);
30 mutex_unlock(&i915->drm.struct_mutex);
31 if (err) {
32 pr_err("i915_gem_object_attach_phys failed, err=%d\n", err);
33 goto out_obj;
34 }
35
36 if (obj->ops != &i915_gem_phys_ops) {
37 pr_err("i915_gem_object_attach_phys did not create a phys object\n");
38 err = -EINVAL;
39 goto out_obj;
40 }
41
42 if (!atomic_read(&obj->mm.pages_pin_count)) {
43 pr_err("i915_gem_object_attach_phys did not pin its phys pages\n");
44 err = -EINVAL;
45 goto out_obj;
46 }
47
48 /* Make the object dirty so that put_pages must do copy back the data */
49 i915_gem_object_lock(obj);
50 err = i915_gem_object_set_to_gtt_domain(obj, true);
51 i915_gem_object_unlock(obj);
52 if (err) {
53 pr_err("i915_gem_object_set_to_gtt_domain failed with err=%d\n",
54 err);
55 goto out_obj;
56 }
57
58 out_obj:
59 i915_gem_object_put(obj);
60 out:
61 return err;
62 }
63
i915_gem_phys_mock_selftests(void)64 int i915_gem_phys_mock_selftests(void)
65 {
66 static const struct i915_subtest tests[] = {
67 SUBTEST(mock_phys_object),
68 };
69 struct drm_i915_private *i915;
70 int err;
71
72 i915 = mock_gem_device();
73 if (!i915)
74 return -ENOMEM;
75
76 err = i915_subtests(tests, i915);
77
78 drm_dev_put(&i915->drm);
79 return err;
80 }
81
