xe_lmtt_test.c

 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(desc, KUNIT_PARAM_DESC_SIZE, "%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);