Commit e3912d09 authored by Karolina Stolarek's avatar Karolina Stolarek Committed by Christian König
Browse files

drm/ttm: Introduce KUnit test 



Add the initial version of unit tests for ttm_device struct, together
with helper functions.

Signed-off-by: default avatarKarolina Stolarek <karolina.stolarek@intel.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/3d1cc45c8a0cf536b92a850e0025f6c555de0169.1691487006.git.karolina.stolarek@intel.com


Signed-off-by: default avatarChristian König <christian.koenig@amd.com>
parent 79cdc56c

drivers/gpu/drm/Kconfig

+15 −0
Original line number Diff line number Diff line
@@ -195,6 +195,21 @@ config DRM_TTM 
	  GPU memory types. Will be enabled automatically if a device driver

	  uses it.



config DRM_TTM_KUNIT_TEST

        tristate "KUnit tests for TTM" if !KUNIT_ALL_TESTS

        default n

        depends on DRM && KUNIT

        select DRM_TTM

        select DRM_EXPORT_FOR_TESTS if m

        select DRM_KUNIT_TEST_HELPERS

        default KUNIT_ALL_TESTS

        help

          Enables unit tests for TTM, a GPU memory manager subsystem used

          to manage memory buffers. This option is mostly useful for kernel

          developers.



          If in doubt, say "N".



config DRM_EXEC

	tristate

	depends on DRM

drivers/gpu/drm/ttm/Makefile

+1 −0
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@@ -8,3 +8,4 @@ ttm-y := ttm_tt.o ttm_bo.o ttm_bo_util.o ttm_bo_vm.o ttm_module.o \ 
ttm-$(CONFIG_AGP) += ttm_agp_backend.o



obj-$(CONFIG_DRM_TTM) += ttm.o

obj-$(CONFIG_DRM_TTM_KUNIT_TEST) += tests/

drivers/gpu/drm/ttm/tests/.kunitconfig

0 → 100644
+4 −0
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CONFIG_KUNIT=y

CONFIG_DRM=y

CONFIG_DRM_KUNIT_TEST_HELPERS=y

CONFIG_DRM_TTM_KUNIT_TEST=y

drivers/gpu/drm/ttm/tests/Makefile

0 → 100644
+5 −0
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# SPDX-License-Identifier: GPL-2.0 AND MIT



obj-$(CONFIG_DRM_TTM_KUNIT_TEST) += \

        ttm_device_test.o \

        ttm_kunit_helpers.o

drivers/gpu/drm/ttm/tests/ttm_device_test.c

0 → 100644
+54 −0
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// SPDX-License-Identifier: GPL-2.0 AND MIT

/*

 * Copyright © 2023 Intel Corporation

 */

#include <drm/ttm/ttm_resource.h>

#include <drm/ttm/ttm_device.h>

#include <drm/ttm/ttm_placement.h>



#include "ttm_kunit_helpers.h"



static void ttm_device_init_basic(struct kunit *test)

{

	struct ttm_test_devices *priv = test->priv;

	struct ttm_device *ttm_dev;

	struct ttm_resource_manager *ttm_sys_man;

	int err;



	ttm_dev = kunit_kzalloc(test, sizeof(*ttm_dev), GFP_KERNEL);

	KUNIT_ASSERT_NOT_NULL(test, ttm_dev);



	err = ttm_device_kunit_init(priv, ttm_dev, false, false);

	KUNIT_ASSERT_EQ(test, err, 0);



	KUNIT_EXPECT_PTR_EQ(test, ttm_dev->funcs, &ttm_dev_funcs);

	KUNIT_ASSERT_NOT_NULL(test, ttm_dev->wq);

	KUNIT_ASSERT_NOT_NULL(test, ttm_dev->man_drv[TTM_PL_SYSTEM]);



	ttm_sys_man = &ttm_dev->sysman;

	KUNIT_ASSERT_NOT_NULL(test, ttm_sys_man);

	KUNIT_EXPECT_TRUE(test, ttm_sys_man->use_tt);

	KUNIT_EXPECT_TRUE(test, ttm_sys_man->use_type);

	KUNIT_ASSERT_NOT_NULL(test, ttm_sys_man->func);



	KUNIT_EXPECT_PTR_EQ(test, ttm_dev->dev_mapping,

			    priv->drm->anon_inode->i_mapping);



	ttm_device_fini(ttm_dev);

}



static struct kunit_case ttm_device_test_cases[] = {

	KUNIT_CASE(ttm_device_init_basic),

	{}

};



static struct kunit_suite ttm_device_test_suite = {

	.name = "ttm_device",

	.init = ttm_test_devices_init,

	.exit = ttm_test_devices_fini,

	.test_cases = ttm_device_test_cases,

};



kunit_test_suites(&ttm_device_test_suite);



MODULE_LICENSE("GPL");