From f9b04d4f1c1952e94f2bc02aeba54914054bab20 Mon Sep 17 00:00:00 2001
From: Youngjae Cho <y0.cho@samsung.com>
Date: Fri, 21 Jun 2024 11:18:22 +0900
Subject: [PATCH] memory: Add empty function

Tizen C# TCT blame there is no memory backend. At least, it requires
empty backend.

Change-Id: I932232afd0fe5e8c8391410a9e92657320565791
Signed-off-by: Youngjae Cho <y0.cho@samsung.com>
---
 CMakeLists.txt           |  3 +-
 hw/memory/CMakeLists.txt | 18 +++++++++++
 hw/memory/memory.c       | 67 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 87 insertions(+), 1 deletion(-)
 create mode 100644 hw/memory/CMakeLists.txt
 create mode 100644 hw/memory/memory.c

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 44acd81..e73b8ca 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -16,4 +16,5 @@ ENDIF()
 
 INSTALL(FILES ${CMAKE_CURRENT_SOURCE_DIR}/LICENSE.Apache-2.0 DESTINATION ${HAL_LICENSE_DIR}/${PROJECT_NAME})
 
-ADD_SUBDIRECTORY(hw/display)
\ No newline at end of file
+ADD_SUBDIRECTORY(hw/display)
+ADD_SUBDIRECTORY(hw/memory)
\ No newline at end of file
diff --git a/hw/memory/CMakeLists.txt b/hw/memory/CMakeLists.txt
new file mode 100644
index 0000000..a35248a
--- /dev/null
+++ b/hw/memory/CMakeLists.txt
@@ -0,0 +1,18 @@
+CMAKE_MINIMUM_REQUIRED(VERSION 2.6)
+PROJECT(hal-backend-device-memory C)
+
+SET(PREFIX ${CMAKE_INSTALL_PREFIX})
+
+INCLUDE(FindPkgConfig)
+pkg_check_modules(hal-backend-device-memory_pkgs REQUIRED dlog)
+
+FOREACH(flag ${hal-backend-device-memory_pkgs_CFLAGS})
+	SET(EXTRA_CFLAGS "${EXTRA_CFLAGS} ${flag}")
+ENDFOREACH(flag)
+
+SET(EXTRA_CFLAGS "${EXTRA_CFLAGS} -fvisibility=hidden")
+SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${EXTRA_CFLAGS}")
+
+ADD_LIBRARY(${PROJECT_NAME} MODULE memory.c)
+TARGET_LINK_LIBRARIES(${PROJECT_NAME} ${hal-backend-device-memory_pkgs_LDFLAGS})
+INSTALL(TARGETS ${PROJECT_NAME} DESTINATION ${HAL_LIB_DIR} COMPONENT RuntimeLibraries)
diff --git a/hw/memory/memory.c b/hw/memory/memory.c
new file mode 100644
index 0000000..84f4c9b
--- /dev/null
+++ b/hw/memory/memory.c
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2024 Samsung Electronics Co., Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the License);
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#include <hal/hal-device-memory-interface.h>
+#include <hal/hal-common-interface.h>
+
+#include "hal-backend-device-visionfive2-common.h"
+
+static int memory_get_gpu_info(const int pid, hal_device_memory_gpu_info_s *info)
+{
+	return -ENODEV;
+}
+
+static int memory_get_gem_info(const int pid, hal_device_memory_gem_info_s *info)
+{
+	return -ENODEV;
+}
+
+static int memory_init(void **data)
+{
+	hal_backend_device_memory_funcs *device_memory_funcs;
+
+	if (!data) {
+		_E("Invalid parameter");
+		return -EINVAL;
+	}
+
+	device_memory_funcs = *(hal_backend_device_memory_funcs **) data;
+	if (!device_memory_funcs)
+		return -EINVAL;
+
+	device_memory_funcs->get_gpu_info = memory_get_gpu_info;
+	device_memory_funcs->get_gem_info = memory_get_gem_info;
+
+	return 0;
+}
+
+static int memory_exit(void *data)
+{
+	return 0;
+}
+
+hal_backend EXPORT hal_backend_device_memory_data = {
+	.name = "memory",
+	.vendor = "VisionFive2",
+	.init = memory_init,
+	.exit = memory_exit,
+	.major_version = 1,
+	.minor_version = 0,
+};
-- 
2.34.1