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drm/xe/kunit: Add GuC Doorbells Manager tests

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Add few tests to make sure that basic usage scenarios of the GuC
Doorbells Manager are implemented correctly.

Cc: Piotr Piórkowski <piotr.piorkowski@intel.com>
Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Link: https://lore.kernel.org/r/20231218190629.502-11-michal.wajdeczko@intel.com
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
This commit is contained in:
Michal Wajdeczko 2023-12-18 20:06:29 +01:00 committed by Rodrigo Vivi
parent 90ad6f3017
commit 6e25461317
2 changed files with 205 additions and 0 deletions
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201
drivers/gpu/drm/xe/tests/xe_guc_db_mgr_test.c Normal file
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@ -0,0 +1,201 @@
// SPDX-License-Identifier: GPL-2.0 AND MIT
/*
* Copyright © 2023 Intel Corporation
*/
#include <kunit/test.h>
#include "xe_device.h"
#include "xe_kunit_helpers.h"
static int guc_dbm_test_init(struct kunit *test)
{
struct xe_guc_db_mgr *dbm;
xe_kunit_helper_xe_device_test_init(test);
dbm = &xe_device_get_gt(test->priv, 0)->uc.guc.dbm;
mutex_init(dbm_mutex(dbm));
test->priv = dbm;
return 0;
}
static void test_empty(struct kunit *test)
{
struct xe_guc_db_mgr *dbm = test->priv;
KUNIT_ASSERT_EQ(test, xe_guc_db_mgr_init(dbm, 0), 0);
KUNIT_ASSERT_EQ(test, dbm->count, 0);
mutex_lock(dbm_mutex(dbm));
KUNIT_EXPECT_LT(test, xe_guc_db_mgr_reserve_id_locked(dbm), 0);
mutex_unlock(dbm_mutex(dbm));
KUNIT_EXPECT_LT(test, xe_guc_db_mgr_reserve_range(dbm, 1, 0), 0);
}
static void test_default(struct kunit *test)
{
struct xe_guc_db_mgr *dbm = test->priv;
KUNIT_ASSERT_EQ(test, xe_guc_db_mgr_init(dbm, ~0), 0);
KUNIT_ASSERT_EQ(test, dbm->count, GUC_NUM_DOORBELLS);
}
static const unsigned int guc_dbm_params[] = {
GUC_NUM_DOORBELLS / 64,
GUC_NUM_DOORBELLS / 32,
GUC_NUM_DOORBELLS / 8,
GUC_NUM_DOORBELLS,
};
static void uint_param_get_desc(const unsigned int *p, char *desc)
{
snprintf(desc, KUNIT_PARAM_DESC_SIZE, "%u", *p);
}
KUNIT_ARRAY_PARAM(guc_dbm, guc_dbm_params, uint_param_get_desc);
static void test_size(struct kunit *test)
{
const unsigned int *p = test->param_value;
struct xe_guc_db_mgr *dbm = test->priv;
unsigned int n;
int id;
KUNIT_ASSERT_EQ(test, xe_guc_db_mgr_init(dbm, *p), 0);
KUNIT_ASSERT_EQ(test, dbm->count, *p);
mutex_lock(dbm_mutex(dbm));
for (n = 0; n < *p; n++) {
KUNIT_EXPECT_GE(test, id = xe_guc_db_mgr_reserve_id_locked(dbm), 0);
KUNIT_EXPECT_LT(test, id, dbm->count);
}
KUNIT_EXPECT_LT(test, xe_guc_db_mgr_reserve_id_locked(dbm), 0);
mutex_unlock(dbm_mutex(dbm));
mutex_lock(dbm_mutex(dbm));
for (n = 0; n < *p; n++)
xe_guc_db_mgr_release_id_locked(dbm, n);
mutex_unlock(dbm_mutex(dbm));
}
static void test_reuse(struct kunit *test)
{
const unsigned int *p = test->param_value;
struct xe_guc_db_mgr *dbm = test->priv;
unsigned int n;
KUNIT_ASSERT_EQ(test, xe_guc_db_mgr_init(dbm, *p), 0);
mutex_lock(dbm_mutex(dbm));
for (n = 0; n < *p; n++)
KUNIT_EXPECT_GE(test, xe_guc_db_mgr_reserve_id_locked(dbm), 0);
KUNIT_EXPECT_LT(test, xe_guc_db_mgr_reserve_id_locked(dbm), 0);
mutex_unlock(dbm_mutex(dbm));
mutex_lock(dbm_mutex(dbm));
for (n = 0; n < *p; n++) {
xe_guc_db_mgr_release_id_locked(dbm, n);
KUNIT_EXPECT_EQ(test, xe_guc_db_mgr_reserve_id_locked(dbm), n);
}
KUNIT_EXPECT_LT(test, xe_guc_db_mgr_reserve_id_locked(dbm), 0);
mutex_unlock(dbm_mutex(dbm));
mutex_lock(dbm_mutex(dbm));
for (n = 0; n < *p; n++)
xe_guc_db_mgr_release_id_locked(dbm, n);
mutex_unlock(dbm_mutex(dbm));
}
static void test_range_overlap(struct kunit *test)
{
const unsigned int *p = test->param_value;
struct xe_guc_db_mgr *dbm = test->priv;
int id1, id2, id3;
unsigned int n;
KUNIT_ASSERT_EQ(test, xe_guc_db_mgr_init(dbm, ~0), 0);
KUNIT_ASSERT_LE(test, *p, dbm->count);
KUNIT_ASSERT_GE(test, id1 = xe_guc_db_mgr_reserve_range(dbm, *p, 0), 0);
for (n = 0; n < dbm->count - *p; n++) {
KUNIT_ASSERT_GE(test, id2 = xe_guc_db_mgr_reserve_range(dbm, 1, 0), 0);
KUNIT_ASSERT_NE(test, id2, id1);
KUNIT_ASSERT_NE_MSG(test, id2 < id1, id2 > id1 + *p - 1,
"id1=%d id2=%d", id1, id2);
}
KUNIT_ASSERT_LT(test, xe_guc_db_mgr_reserve_range(dbm, 1, 0), 0);
xe_guc_db_mgr_release_range(dbm, 0, dbm->count);
if (*p >= 1) {
KUNIT_ASSERT_GE(test, id1 = xe_guc_db_mgr_reserve_range(dbm, 1, 0), 0);
KUNIT_ASSERT_GE(test, id2 = xe_guc_db_mgr_reserve_range(dbm, *p - 1, 0), 0);
KUNIT_ASSERT_NE(test, id2, id1);
KUNIT_ASSERT_NE_MSG(test, id1 < id2, id1 > id2 + *p - 2,
"id1=%d id2=%d", id1, id2);
for (n = 0; n < dbm->count - *p; n++) {
KUNIT_ASSERT_GE(test, id3 = xe_guc_db_mgr_reserve_range(dbm, 1, 0), 0);
KUNIT_ASSERT_NE(test, id3, id1);
KUNIT_ASSERT_NE(test, id3, id2);
KUNIT_ASSERT_NE_MSG(test, id3 < id2, id3 > id2 + *p - 2,
"id3=%d id2=%d", id3, id2);
}
KUNIT_ASSERT_LT(test, xe_guc_db_mgr_reserve_range(dbm, 1, 0), 0);
xe_guc_db_mgr_release_range(dbm, 0, dbm->count);
}
}
static void test_range_compact(struct kunit *test)
{
const unsigned int *p = test->param_value;
struct xe_guc_db_mgr *dbm = test->priv;
unsigned int n;
KUNIT_ASSERT_EQ(test, xe_guc_db_mgr_init(dbm, ~0), 0);
KUNIT_ASSERT_NE(test, *p, 0);
KUNIT_ASSERT_LE(test, *p, dbm->count);
if (dbm->count % *p)
kunit_skip(test, "must be divisible");
KUNIT_ASSERT_GE(test, xe_guc_db_mgr_reserve_range(dbm, *p, 0), 0);
for (n = 1; n < dbm->count / *p; n++)
KUNIT_ASSERT_GE(test, xe_guc_db_mgr_reserve_range(dbm, *p, 0), 0);
KUNIT_ASSERT_LT(test, xe_guc_db_mgr_reserve_range(dbm, 1, 0), 0);
xe_guc_db_mgr_release_range(dbm, 0, dbm->count);
}
static void test_range_spare(struct kunit *test)
{
const unsigned int *p = test->param_value;
struct xe_guc_db_mgr *dbm = test->priv;
int id;
KUNIT_ASSERT_EQ(test, xe_guc_db_mgr_init(dbm, ~0), 0);
KUNIT_ASSERT_LE(test, *p, dbm->count);
KUNIT_ASSERT_LT(test, xe_guc_db_mgr_reserve_range(dbm, *p, dbm->count), 0);
KUNIT_ASSERT_LT(test, xe_guc_db_mgr_reserve_range(dbm, *p, dbm->count - *p + 1), 0);
KUNIT_ASSERT_EQ(test, id = xe_guc_db_mgr_reserve_range(dbm, *p, dbm->count - *p), 0);
KUNIT_ASSERT_LT(test, xe_guc_db_mgr_reserve_range(dbm, 1, dbm->count - *p), 0);
xe_guc_db_mgr_release_range(dbm, id, *p);
}
static struct kunit_case guc_dbm_test_cases[] = {
KUNIT_CASE(test_empty),
KUNIT_CASE(test_default),
KUNIT_CASE_PARAM(test_size, guc_dbm_gen_params),
KUNIT_CASE_PARAM(test_reuse, guc_dbm_gen_params),
KUNIT_CASE_PARAM(test_range_overlap, guc_dbm_gen_params),
KUNIT_CASE_PARAM(test_range_compact, guc_dbm_gen_params),
KUNIT_CASE_PARAM(test_range_spare, guc_dbm_gen_params),
{}
};
static struct kunit_suite guc_dbm_suite = {
.name = "guc_dbm",
.test_cases = guc_dbm_test_cases,
.init = guc_dbm_test_init,
};
kunit_test_suites(&guc_dbm_suite);

4
drivers/gpu/drm/xe/xe_guc_db_mgr.c
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@ -255,3 +255,7 @@ void xe_guc_db_mgr_print(struct xe_guc_db_mgr *dbm,
mutex_unlock(dbm_mutex(dbm));
}
#if IS_BUILTIN(CONFIG_DRM_XE_KUNIT_TEST)
#include "tests/xe_guc_db_mgr_test.c"
#endif