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drm/xe/kunit: Add test for LMTT operations

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The LMTT variants are abstracted with xe_lmtt_ops. Make sure that
both 2L and ML ops implementations are correct.

Reviewed-by: Michał Winiarski <michal.winiarski@intel.com>
Link: https://lore.kernel.org/r/20231128151507.1015-6-michal.wajdeczko@intel.com
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
This commit is contained in:
Michal Wajdeczko
2023-11-28 16:15:07 +01:00
committed by Rodrigo Vivi
parent a43ac2de4c
commit f1a5d808b2
2 changed files with 77 additions and 0 deletions
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73
drivers/gpu/drm/xe/tests/xe_lmtt_test.c Normal file
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// 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);