// SPDX-License-Identifier: GPL-2.0 AND MIT
/*
 * Copyright © 2023 Intel Corporation
 */

#include <kunit/test.h>

static const struct lmtt_ops_param {
        const char *desc;
        const struct xe_lmtt_ops *ops;
} lmtt_ops_params[] = {
        { "2-level", &lmtt_2l_ops, },
        { "multi-level", &lmtt_ml_ops, },
};

static void lmtt_ops_param_get_desc(const struct lmtt_ops_param *p, char *desc)
{
        snprintf(desc, KUNIT_PARAM_DESC_SIZE, "%s", p->desc);
}

KUNIT_ARRAY_PARAM(lmtt_ops, lmtt_ops_params, lmtt_ops_param_get_desc);

static void test_ops(struct kunit *test)
{
        const struct lmtt_ops_param *p = test->param_value;
        const struct xe_lmtt_ops *ops = p->ops;
        unsigned int n;

        KUNIT_ASSERT_NOT_NULL(test, ops->lmtt_root_pd_level);
        KUNIT_ASSERT_NOT_NULL(test, ops->lmtt_pte_num);
        KUNIT_ASSERT_NOT_NULL(test, ops->lmtt_pte_size);
        KUNIT_ASSERT_NOT_NULL(test, ops->lmtt_pte_shift);
        KUNIT_ASSERT_NOT_NULL(test, ops->lmtt_pte_index);
        KUNIT_ASSERT_NOT_NULL(test, ops->lmtt_pte_encode);

        KUNIT_EXPECT_NE(test, ops->lmtt_root_pd_level(), 0);

        for (n = 0; n <= ops->lmtt_root_pd_level(); n++) {
                KUNIT_EXPECT_NE_MSG(test, ops->lmtt_pte_num(n), 0,
                                    "level=%u", n);
                KUNIT_EXPECT_NE_MSG(test, ops->lmtt_pte_size(n), 0,
                                    "level=%u", n);
                KUNIT_EXPECT_NE_MSG(test, ops->lmtt_pte_encode(0, n), LMTT_PTE_INVALID,
                                    "level=%u", n);
        }

        for (n = 0; n < ops->lmtt_root_pd_level(); n++) {
                u64 addr = BIT_ULL(ops->lmtt_pte_shift(n));

                KUNIT_EXPECT_NE_MSG(test, ops->lmtt_pte_shift(n), 0,
                                    "level=%u", n);
                KUNIT_EXPECT_EQ_MSG(test, ops->lmtt_pte_index(addr - 1, n), 0,
                                    "addr=%#llx level=%u", addr, n);
                KUNIT_EXPECT_EQ_MSG(test, ops->lmtt_pte_index(addr + 1, n), 1,
                                    "addr=%#llx level=%u", addr, n);
                KUNIT_EXPECT_EQ_MSG(test, ops->lmtt_pte_index(addr * 2 - 1, n), 1,
                                    "addr=%#llx level=%u", addr, n);
                KUNIT_EXPECT_EQ_MSG(test, ops->lmtt_pte_index(addr * 2, n), 2,
                                    "addr=%#llx level=%u", addr, n);
        }
}

static struct kunit_case lmtt_test_cases[] = {
        KUNIT_CASE_PARAM(test_ops, lmtt_ops_gen_params),
        {}
};

static struct kunit_suite lmtt_suite = {
        .name = "lmtt",
        .test_cases = lmtt_test_cases,
};

kunit_test_suites(&lmtt_suite);