1// SPDX-License-Identifier: GPL-2.0 AND MIT
2/*
3 * Copyright © 2024 Intel Corporation
4 */
5
6#include <kunit/test.h>
7
8#include "xe_device.h"
9#include "xe_kunit_helpers.h"
10
11static int guc_id_mgr_test_init(struct kunit *test)
12{
13 struct xe_guc_id_mgr *idm;
14
15 xe_kunit_helper_xe_device_test_init(test);
16 idm = &xe_device_get_gt(xe: test->priv, gt_id: 0)->uc.guc.submission_state.idm;
17
18 mutex_init(idm_mutex(idm));
19 test->priv = idm;
20 return 0;
21}
22
23static void bad_init(struct kunit *test)
24{
25 struct xe_guc_id_mgr *idm = test->priv;
26
27 KUNIT_EXPECT_EQ(test, -EINVAL, xe_guc_id_mgr_init(idm, 0));
28 KUNIT_EXPECT_EQ(test, -ERANGE, xe_guc_id_mgr_init(idm, GUC_ID_MAX + 1));
29}
30
31static void no_init(struct kunit *test)
32{
33 struct xe_guc_id_mgr *idm = test->priv;
34
35 mutex_lock(idm_mutex(idm));
36 KUNIT_EXPECT_EQ(test, -ENODATA, xe_guc_id_mgr_reserve_locked(idm, 0));
37 mutex_unlock(lock: idm_mutex(idm));
38
39 KUNIT_EXPECT_EQ(test, -ENODATA, xe_guc_id_mgr_reserve(idm, 1, 1));
40}
41
42static void init_fini(struct kunit *test)
43{
44 struct xe_guc_id_mgr *idm = test->priv;
45
46 KUNIT_ASSERT_EQ(test, 0, xe_guc_id_mgr_init(idm, -1));
47 KUNIT_EXPECT_NOT_NULL(test, idm->bitmap);
48 KUNIT_EXPECT_EQ(test, idm->total, GUC_ID_MAX);
49 __fini_idm(NULL, idm);
50 KUNIT_EXPECT_NULL(test, idm->bitmap);
51 KUNIT_EXPECT_EQ(test, idm->total, 0);
52}
53
54static void check_used(struct kunit *test)
55{
56 struct xe_guc_id_mgr *idm = test->priv;
57 unsigned int n;
58
59 KUNIT_ASSERT_EQ(test, 0, xe_guc_id_mgr_init(idm, 2));
60
61 mutex_lock(idm_mutex(idm));
62
63 for (n = 0; n < idm->total; n++) {
64 kunit_info(test, "n=%u", n);
65 KUNIT_EXPECT_EQ(test, idm->used, n);
66 KUNIT_EXPECT_GE(test, idm_reserve_chunk_locked(idm, 1, 0), 0);
67 KUNIT_EXPECT_EQ(test, idm->used, n + 1);
68 }
69 KUNIT_EXPECT_EQ(test, idm->used, idm->total);
70 idm_release_chunk_locked(idm, 0, idm->used);
71 KUNIT_EXPECT_EQ(test, idm->used, 0);
72
73 mutex_unlock(lock: idm_mutex(idm));
74}
75
76static void check_quota(struct kunit *test)
77{
78 struct xe_guc_id_mgr *idm = test->priv;
79 unsigned int n;
80
81 KUNIT_ASSERT_EQ(test, 0, xe_guc_id_mgr_init(idm, 2));
82
83 mutex_lock(idm_mutex(idm));
84
85 for (n = 0; n < idm->total - 1; n++) {
86 kunit_info(test, "n=%u", n);
87 KUNIT_EXPECT_EQ(test, idm_reserve_chunk_locked(idm, 1, idm->total), -EDQUOT);
88 KUNIT_EXPECT_EQ(test, idm_reserve_chunk_locked(idm, 1, idm->total - n), -EDQUOT);
89 KUNIT_EXPECT_EQ(test, idm_reserve_chunk_locked(idm, idm->total - n, 1), -EDQUOT);
90 KUNIT_EXPECT_GE(test, idm_reserve_chunk_locked(idm, 1, 1), 0);
91 }
92 KUNIT_EXPECT_LE(test, 0, idm_reserve_chunk_locked(idm, 1, 0));
93 KUNIT_EXPECT_EQ(test, idm->used, idm->total);
94 idm_release_chunk_locked(idm, 0, idm->total);
95 KUNIT_EXPECT_EQ(test, idm->used, 0);
96
97 mutex_unlock(lock: idm_mutex(idm));
98}
99
100static void check_all(struct kunit *test)
101{
102 struct xe_guc_id_mgr *idm = test->priv;
103 unsigned int n;
104
105 KUNIT_ASSERT_EQ(test, 0, xe_guc_id_mgr_init(idm, -1));
106
107 mutex_lock(idm_mutex(idm));
108
109 for (n = 0; n < idm->total; n++)
110 KUNIT_EXPECT_LE(test, 0, idm_reserve_chunk_locked(idm, 1, 0));
111 KUNIT_EXPECT_EQ(test, idm->used, idm->total);
112 for (n = 0; n < idm->total; n++)
113 idm_release_chunk_locked(idm, n, 1);
114
115 mutex_unlock(lock: idm_mutex(idm));
116}
117
118static struct kunit_case guc_id_mgr_test_cases[] = {
119 KUNIT_CASE(bad_init),
120 KUNIT_CASE(no_init),
121 KUNIT_CASE(init_fini),
122 KUNIT_CASE(check_used),
123 KUNIT_CASE(check_quota),
124 KUNIT_CASE_SLOW(check_all),
125 {}
126};
127
128static struct kunit_suite guc_id_mgr_suite = {
129 .name = "guc_idm",
130 .test_cases = guc_id_mgr_test_cases,
131
132 .init = guc_id_mgr_test_init,
133 .exit = NULL,
134};
135
136kunit_test_suites(&guc_id_mgr_suite);
137

source code of linux/drivers/gpu/drm/xe/tests/xe_guc_id_mgr_test.c