1// SPDX-License-Identifier: GPL-2.0 AND MIT
2/*
3 * Copyright © 2023 Intel Corporation
4 */
5
6#include <kunit/test.h>
7
8static const struct lmtt_ops_param {
9 const char *desc;
10 const struct xe_lmtt_ops *ops;
11} lmtt_ops_params[] = {
12 { "2-level", &lmtt_2l_ops, },
13 { "multi-level", &lmtt_ml_ops, },
14};
15
16static void lmtt_ops_param_get_desc(const struct lmtt_ops_param *p, char *desc)
17{
18 snprintf(buf: desc, KUNIT_PARAM_DESC_SIZE, fmt: "%s", p->desc);
19}
20
21KUNIT_ARRAY_PARAM(lmtt_ops, lmtt_ops_params, lmtt_ops_param_get_desc);
22
23static void test_ops(struct kunit *test)
24{
25 const struct lmtt_ops_param *p = test->param_value;
26 const struct xe_lmtt_ops *ops = p->ops;
27 unsigned int n;
28
29 KUNIT_ASSERT_NOT_NULL(test, ops->lmtt_root_pd_level);
30 KUNIT_ASSERT_NOT_NULL(test, ops->lmtt_pte_num);
31 KUNIT_ASSERT_NOT_NULL(test, ops->lmtt_pte_size);
32 KUNIT_ASSERT_NOT_NULL(test, ops->lmtt_pte_shift);
33 KUNIT_ASSERT_NOT_NULL(test, ops->lmtt_pte_index);
34 KUNIT_ASSERT_NOT_NULL(test, ops->lmtt_pte_encode);
35
36 KUNIT_EXPECT_NE(test, ops->lmtt_root_pd_level(), 0);
37
38 for (n = 0; n <= ops->lmtt_root_pd_level(); n++) {
39 KUNIT_EXPECT_NE_MSG(test, ops->lmtt_pte_num(n), 0,
40 "level=%u", n);
41 KUNIT_EXPECT_NE_MSG(test, ops->lmtt_pte_size(n), 0,
42 "level=%u", n);
43 KUNIT_EXPECT_NE_MSG(test, ops->lmtt_pte_encode(0, n), LMTT_PTE_INVALID,
44 "level=%u", n);
45 }
46
47 for (n = 0; n < ops->lmtt_root_pd_level(); n++) {
48 u64 addr = BIT_ULL(ops->lmtt_pte_shift(n));
49
50 KUNIT_EXPECT_NE_MSG(test, ops->lmtt_pte_shift(n), 0,
51 "level=%u", n);
52 KUNIT_EXPECT_EQ_MSG(test, ops->lmtt_pte_index(addr - 1, n), 0,
53 "addr=%#llx level=%u", addr, n);
54 KUNIT_EXPECT_EQ_MSG(test, ops->lmtt_pte_index(addr + 1, n), 1,
55 "addr=%#llx level=%u", addr, n);
56 KUNIT_EXPECT_EQ_MSG(test, ops->lmtt_pte_index(addr * 2 - 1, n), 1,
57 "addr=%#llx level=%u", addr, n);
58 KUNIT_EXPECT_EQ_MSG(test, ops->lmtt_pte_index(addr * 2, n), 2,
59 "addr=%#llx level=%u", addr, n);
60 }
61}
62
63static struct kunit_case lmtt_test_cases[] = {
64 KUNIT_CASE_PARAM(test_ops, lmtt_ops_gen_params),
65 {}
66};
67
68static struct kunit_suite lmtt_suite = {
69 .name = "lmtt",
70 .test_cases = lmtt_test_cases,
71};
72
73kunit_test_suites(&lmtt_suite);
74

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