debug: tester: add simple DRAM execution test

Add new type of test: TESTER_MODULE_CASE_SIMPLE_DRAM_TEST
This will allow to test simple dram execution scenario

Signed-off-by: Adrian Bonislawski <adrian.bonislawski@intel.com>

Author: abonislawski

src/debug/tester/CMakeLists.txt

@@ -1,2 +1,3 @@
 add_local_sources(tester.c)
 add_local_sources(tester_dummy_test.c)
+add_local_sources(tester_simple_dram_test.c)

src/debug/tester/llext/CMakeLists.txt

@@ -4,4 +4,5 @@
 sof_llext_build("tester"
 	SOURCES ../tester.c
 		../tester_dummy_test.c
+		../tester_simple_dram_test.c
 )

src/debug/tester/tester.c

@@ -16,6 +16,7 @@
 #include <sof/audio/sink_source_utils.h>
 #include "tester.h"
 #include "tester_dummy_test.h"
+#include "tester_simple_dram_test.h"
 
 /**
  * Tester module is a framework for a runtime testing that need a special test code
@@ -76,6 +77,9 @@ static int tester_init(struct processing_module *mod)
 	case TESTER_MODULE_CASE_DUMMY_TEST:
 		cd->tester_case_interface = &tester_interface_dummy_test;
 		break;
+	case TESTER_MODULE_CASE_SIMPLE_DRAM_TEST:
+		cd->tester_case_interface = &tester_interface_simple_dram_test;
+		break;
 
 	default:
 		comp_err(dev, "Invalid config, unknown test type");

src/debug/tester/tester.h

@@ -15,6 +15,7 @@
 
 #define TESTER_MODULE_CASE_NO_TEST  0
 #define TESTER_MODULE_CASE_DUMMY_TEST 1
+#define TESTER_MODULE_CASE_SIMPLE_DRAM_TEST 2
 
 /**
  * API of a test case

src/debug/tester/tester_simple_dram_test.c

@@ -0,0 +1,83 @@
+// SPDX-License-Identifier: BSD-3-Clause
+//
+// Copyright(c) 2025 Intel Corporation. All rights reserved.
+//
+// Author: Adrian Bonislawski <adrian.bonislawski@intel.com>
+
+#include "tester_simple_dram_test.h"
+#include <sof/audio/component.h>
+#include <sof/audio/module_adapter/module/generic.h>
+#include <sof/lib/memory.h>
+
+/*
+ * This is a simple test case for DRAM execution
+ * The test case will copy every 2nd frame of data
+ * by setting do_copy flag to true/false
+ */
+
+struct tester_module_simple_dram_test_data {
+	bool do_copy_data;
+};
+
+static int validate_l3_memory(void *ptr)
+{
+	if (!((POINTER_TO_UINT(ptr) >= L3_MEM_BASE_ADDR) &&
+	      (POINTER_TO_UINT(ptr) < L3_MEM_BASE_ADDR + L3_MEM_SIZE)))
+		return -EINVAL;
+
+	return 0;
+}
+
+__cold static int simple_dram_test_case_init(struct processing_module *mod, void **ctx)
+{
+#if !CONFIG_L3_HEAP
+	return -EINVAL;
+#endif
+	struct tester_module_simple_dram_test_data *data =
+		rzalloc(0, 0, SOF_MEM_CAPS_L3, sizeof(*data));
+
+	if (!data)
+		return -ENOMEM;
+
+	if (validate_l3_memory(data) != 0) {
+		rfree(data);
+		return -EINVAL;
+	}
+
+	if (validate_l3_memory(tester_interface_simple_dram_test.init) != 0 ||
+	    validate_l3_memory(tester_interface_simple_dram_test.process) != 0 ||
+	    validate_l3_memory(tester_interface_simple_dram_test.free) != 0) {
+		rfree(data);
+		return -EINVAL;
+	}
+
+	data->do_copy_data = false;
+	*ctx = data;
+	return 0;
+}
+
+__cold static int simple_dram_test_case_process(void *ctx, struct processing_module *mod,
+			    struct sof_source **sources, int num_of_sources,
+			    struct sof_sink **sinks, int num_of_sinks,
+			    bool *do_copy)
+{
+	struct tester_module_simple_dram_test_data *data = ctx;
+
+	/* copy every second cycle */
+	*do_copy = data->do_copy_data;
+	data->do_copy_data = !data->do_copy_data;
+
+	return 0;
+}
+
+__cold static int simple_dram_test_free(void *ctx, struct processing_module *mod)
+{
+	rfree(ctx);
+	return 0;
+}
+
+const struct tester_test_case_interface tester_interface_simple_dram_test = {
+	.init = simple_dram_test_case_init,
+	.process = simple_dram_test_case_process,
+	.free = simple_dram_test_free
+};

src/debug/tester/tester_simple_dram_test.h

@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright(c) 2025 Intel Corporation.
+ *
+ * Author: Adrian Bonislawski <adrian.bonislawski@intel.com>
+ */
+
+#ifndef TESTER_SIMPLE_DRAM_TEST
+#define TESTER_SIMPLE_DRAM_TEST
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "tester.h"
+
+extern const struct tester_test_case_interface tester_interface_simple_dram_test;
+
+#endif /* TESTER_DUMMY_TEST */

zephyr/CMakeLists.txt

@@ -220,6 +220,7 @@ elseif(CONFIG_COMP_TESTER)
 	zephyr_library_sources_ifdef(CONFIG_COMP_TESTER
 		${SOF_DEBUG_PATH}/tester/tester.c
 		${SOF_DEBUG_PATH}/tester/tester_dummy_test.c
+		${SOF_DEBUG_PATH}/tester/tester_simple_dram_test.c
 	)
 endif()