1 /*
2  * SPDX-License-Identifier: MIT
3  *
4  * Copyright © 2016 Intel Corporation
5  */
6 
7 #include "i915_selftest.h"
8 
9 #include "huge_gem_object.h"
10 #include "selftests/igt_flush_test.h"
11 #include "selftests/mock_gem_device.h"
12 
13 static int igt_gem_object(void *arg)
14 {
15 	struct drm_i915_private *i915 = arg;
16 	struct drm_i915_gem_object *obj;
17 	int err;
18 
19 	/* Basic test to ensure we can create an object */
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 	err = 0;
29 	i915_gem_object_put(obj);
30 out:
31 	return err;
32 }
33 
34 static int igt_gem_huge(void *arg)
35 {
36 	const unsigned int nreal = 509; /* just to be awkward */
37 	struct drm_i915_private *i915 = arg;
38 	struct drm_i915_gem_object *obj;
39 	unsigned int n;
40 	int err;
41 
42 	/* Basic sanitycheck of our huge fake object allocation */
43 
44 	obj = huge_gem_object(i915,
45 			      nreal * PAGE_SIZE,
46 			      to_gt(i915)->ggtt->vm.total + PAGE_SIZE);
47 	if (IS_ERR(obj))
48 		return PTR_ERR(obj);
49 
50 	err = i915_gem_object_pin_pages_unlocked(obj);
51 	if (err) {
52 		pr_err("Failed to allocate %u pages (%lu total), err=%d\n",
53 		       nreal, obj->base.size / PAGE_SIZE, err);
54 		goto out;
55 	}
56 
57 	for (n = 0; n < obj->base.size / PAGE_SIZE; n++) {
58 		if (i915_gem_object_get_page(obj, n) !=
59 		    i915_gem_object_get_page(obj, n % nreal)) {
60 			pr_err("Page lookup mismatch at index %u [%u]\n",
61 			       n, n % nreal);
62 			err = -EINVAL;
63 			goto out_unpin;
64 		}
65 	}
66 
67 out_unpin:
68 	i915_gem_object_unpin_pages(obj);
69 out:
70 	i915_gem_object_put(obj);
71 	return err;
72 }
73 
74 int i915_gem_object_mock_selftests(void)
75 {
76 	static const struct i915_subtest tests[] = {
77 		SUBTEST(igt_gem_object),
78 	};
79 	struct drm_i915_private *i915;
80 	int err;
81 
82 	i915 = mock_gem_device();
83 	if (!i915)
84 		return -ENOMEM;
85 
86 	err = i915_subtests(tests, i915);
87 
88 	mock_destroy_device(i915);
89 	return err;
90 }
91 
92 int i915_gem_object_live_selftests(struct drm_i915_private *i915)
93 {
94 	static const struct i915_subtest tests[] = {
95 		SUBTEST(igt_gem_huge),
96 	};
97 
98 	return i915_live_subtests(tests, i915);
99 }
100