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// SPDX-License-Identifier: GPL-2.0
/*
* Intel Platform Monitory Technology Discovery KUNIT tests
*
* Copyright (c) 2025, Intel Corporation.
* All Rights Reserved.
*/
#include <kunit/test.h>
#include <linux/err.h>
#include <linux/intel_pmt_features.h>
#include <linux/intel_vsec.h>
#include <linux/module.h>
#include <linux/slab.h>
#define PMT_FEATURE_COUNT (FEATURE_MAX + 1)
static void
validate_pmt_regions(struct kunit *test, struct pmt_feature_group *feature_group, int feature_id)
{
int i;
kunit_info(test, "Feature ID %d [%s] has %d regions.\n", feature_id,
pmt_feature_names[feature_id], feature_group->count);
for (i = 0; i < feature_group->count; i++) {
struct telemetry_region *region = &feature_group->regions[i];
kunit_info(test, " - Region %d: cdie_mask=%u, package_id=%u, partition=%u, segment=%u,",
i, region->plat_info.cdie_mask, region->plat_info.package_id,
region->plat_info.partition, region->plat_info.segment);
kunit_info(test, "\t\tbus=%u, device=%u, function=%u, guid=0x%x,",
region->plat_info.bus_number, region->plat_info.device_number,
region->plat_info.function_number, region->guid);
kunit_info(test, "\t\taddr=%p, size=%zu, num_rmids=%u", region->addr, region->size,
region->num_rmids);
KUNIT_ASSERT_GE(test, region->plat_info.cdie_mask, 0);
KUNIT_ASSERT_GE(test, region->plat_info.package_id, 0);
KUNIT_ASSERT_GE(test, region->plat_info.partition, 0);
KUNIT_ASSERT_GE(test, region->plat_info.segment, 0);
KUNIT_ASSERT_GE(test, region->plat_info.bus_number, 0);
KUNIT_ASSERT_GE(test, region->plat_info.device_number, 0);
KUNIT_ASSERT_GE(test, region->plat_info.function_number, 0);
KUNIT_ASSERT_NE(test, region->guid, 0);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, (__force const void *)region->addr);
}
}
static void linebreak(struct kunit *test)
{
kunit_info(test, "*****************************************************************************\n");
}
static void test_intel_pmt_get_regions_by_feature(struct kunit *test)
{
struct pmt_feature_group *feature_group;
int num_available = 0;
int feature_id;
/* Iterate through all possible feature IDs */
for (feature_id = 1; feature_id < PMT_FEATURE_COUNT; feature_id++, linebreak(test)) {
const char *name;
if (!pmt_feature_id_is_valid(feature_id))
continue;
name = pmt_feature_names[feature_id];
feature_group = intel_pmt_get_regions_by_feature(feature_id);
if (IS_ERR(feature_group)) {
if (PTR_ERR(feature_group) == -ENOENT)
kunit_warn(test, "intel_pmt_get_regions_by_feature() reporting feature %d [%s] is not present.\n",
feature_id, name);
else
kunit_warn(test, "intel_pmt_get_regions_by_feature() returned error %ld while attempt to lookup %d [%s].\n",
PTR_ERR(feature_group), feature_id, name);
continue;
}
if (!feature_group) {
kunit_warn(test, "Feature ID %d: %s is not available.\n", feature_id, name);
continue;
}
num_available++;
validate_pmt_regions(test, feature_group, feature_id);
intel_pmt_put_feature_group(feature_group);
}
if (num_available == 0)
kunit_warn(test, "No PMT region groups were available for any feature ID (0-10).\n");
}
static struct kunit_case intel_pmt_discovery_test_cases[] = {
KUNIT_CASE(test_intel_pmt_get_regions_by_feature),
{}
};
static struct kunit_suite intel_pmt_discovery_test_suite = {
.name = "pmt_discovery_test",
.test_cases = intel_pmt_discovery_test_cases,
};
kunit_test_suite(intel_pmt_discovery_test_suite);
MODULE_IMPORT_NS("INTEL_PMT_DISCOVERY");
MODULE_AUTHOR("David E. Box <david.e.box@linux.intel.com>");
MODULE_DESCRIPTION("Intel PMT Discovery KUNIT test driver");
MODULE_LICENSE("GPL");
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