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drm/xe/kunit: Define helper functions to allocate fake xe device

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There will be more KUnit tests added that will require fake device.
Define generic helper functions to avoid code duplications.

Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20231218190629.502-6-michal.wajdeczko@intel.com
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
This commit is contained in:
Michal Wajdeczko 2023-12-18 20:06:24 +01:00 committed by Rodrigo Vivi
parent 4ceb8645bd
commit 5095d13d75
3 changed files with 100 additions and 0 deletions
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3
drivers/gpu/drm/xe/Makefile
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@ -156,6 +156,9 @@ xe-$(CONFIG_PCI_IOV) += \
xe_lmtt_2l.o \
xe_lmtt_ml.o
xe-$(CONFIG_DRM_XE_KUNIT_TEST) += \
tests/xe_kunit_helpers.o
# i915 Display compat #defines and #includes
subdir-ccflags-$(CONFIG_DRM_XE_DISPLAY) += \
-I$(srctree)/$(src)/display/ext \

80
drivers/gpu/drm/xe/tests/xe_kunit_helpers.c Normal file
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@ -0,0 +1,80 @@
// SPDX-License-Identifier: GPL-2.0 AND MIT
/*
* Copyright © 2023 Intel Corporation
*/
#include <kunit/test.h>
#include <kunit/static_stub.h>
#include <kunit/visibility.h>
#include <drm/drm_drv.h>
#include <drm/drm_kunit_helpers.h>
#include "tests/xe_kunit_helpers.h"
#include "tests/xe_pci_test.h"
#include "xe_device_types.h"
/**
* xe_kunit_helper_alloc_xe_device - Allocate a &xe_device for a KUnit test.
* @test: the &kunit where this &xe_device will be used
* @dev: The parent device object
*
* This function allocates xe_device using drm_kunit_helper_alloc_device().
* The xe_device allocation is managed by the test.
*
* @dev should be allocated using drm_kunit_helper_alloc_device().
*
* This function uses KUNIT_ASSERT to detect any allocation failures.
*
* Return: A pointer to the new &xe_device.
*/
struct xe_device *xe_kunit_helper_alloc_xe_device(struct kunit *test,
struct device *dev)
{
struct xe_device *xe;
xe = drm_kunit_helper_alloc_drm_device(test, dev,
struct xe_device,
drm, DRIVER_GEM);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, xe);
return xe;
}
EXPORT_SYMBOL_IF_KUNIT(xe_kunit_helper_alloc_xe_device);
/**
* xe_kunit_helper_xe_device_test_init - Prepare a &xe_device for a KUnit test.
* @test: the &kunit where this fake &xe_device will be used
*
* This function allocates and initializes a fake &xe_device and stores its
* pointer as &kunit.priv to allow the test code to access it.
*
* This function can be directly used as custom implementation of
* &kunit_suite.init.
*
* It is possible to prepare specific variant of the fake &xe_device by passing
* in &kunit.priv pointer to the struct xe_pci_fake_data supplemented with
* desired parameters prior to calling this function.
*
* This function uses KUNIT_ASSERT to detect any failures.
*
* Return: Always 0.
*/
int xe_kunit_helper_xe_device_test_init(struct kunit *test)
{
struct xe_device *xe;
struct device *dev;
int err;
dev = drm_kunit_helper_alloc_device(test);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dev);
xe = xe_kunit_helper_alloc_xe_device(test, dev);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, xe);
err = xe_pci_fake_device_init(xe);
KUNIT_ASSERT_EQ(test, err, 0);
test->priv = xe;
return 0;
}
EXPORT_SYMBOL_IF_KUNIT(xe_kunit_helper_xe_device_test_init);

17
drivers/gpu/drm/xe/tests/xe_kunit_helpers.h Normal file
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@ -0,0 +1,17 @@
/* SPDX-License-Identifier: GPL-2.0 AND MIT */
/*
* Copyright © 2023 Intel Corporation
*/
#ifndef _XE_KUNIT_HELPERS_H_
#define _XE_KUNIT_HELPERS_H_
struct device;
struct kunit;
struct xe_device;
struct xe_device *xe_kunit_helper_alloc_xe_device(struct kunit *test,
struct device *dev);
int xe_kunit_helper_xe_device_test_init(struct kunit *test);
#endif