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// SPDX-License-Identifier: GPL-2.0
#include <kunit/test.h>
#include <kunit/device.h>
#include <linux/coresight.h>
#include "coresight-priv.h"
static struct coresight_device *coresight_test_device(struct device *dev)
{
struct coresight_device *csdev = devm_kcalloc(dev, 1,
sizeof(struct coresight_device),
GFP_KERNEL);
csdev->pdata = devm_kcalloc(dev, 1,
sizeof(struct coresight_platform_data),
GFP_KERNEL);
return csdev;
}
static void test_default_sink(struct kunit *test)
{
/*
* Source -> ETF -> ETR -> CATU
* ^
* | default
*/
struct device *dev = kunit_device_register(test, "coresight_kunit");
struct coresight_device *src = coresight_test_device(dev),
*etf = coresight_test_device(dev),
*etr = coresight_test_device(dev),
*catu = coresight_test_device(dev);
struct coresight_connection conn = {};
src->type = CORESIGHT_DEV_TYPE_SOURCE;
/*
* Don't use CORESIGHT_DEV_SUBTYPE_SOURCE_PROC, that would always return
* a TRBE sink if one is registered.
*/
src->subtype.source_subtype = CORESIGHT_DEV_SUBTYPE_SOURCE_BUS;
etf->type = CORESIGHT_DEV_TYPE_LINKSINK;
etf->subtype.sink_subtype = CORESIGHT_DEV_SUBTYPE_SINK_BUFFER;
etr->type = CORESIGHT_DEV_TYPE_SINK;
etr->subtype.sink_subtype = CORESIGHT_DEV_SUBTYPE_SINK_SYSMEM;
catu->type = CORESIGHT_DEV_TYPE_HELPER;
conn.src_dev = src;
conn.dest_dev = etf;
coresight_add_out_conn(dev, src->pdata, &conn);
conn.src_dev = etf;
conn.dest_dev = etr;
coresight_add_out_conn(dev, etf->pdata, &conn);
conn.src_dev = etr;
conn.dest_dev = catu;
coresight_add_out_conn(dev, etr->pdata, &conn);
KUNIT_ASSERT_PTR_EQ(test, coresight_find_default_sink(src), etr);
}
static struct kunit_case coresight_testcases[] = {
KUNIT_CASE(test_default_sink),
{}
};
static struct kunit_suite coresight_test_suite = {
.name = "coresight_test_suite",
.test_cases = coresight_testcases,
};
kunit_test_suites(&coresight_test_suite);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("James Clark <james.clark@linaro.org>");
MODULE_DESCRIPTION("Arm CoreSight KUnit tests");
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