X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=src%2Ftbm_bo.c;h=f2870c92b55b3cae850b251ed725611d46a81532;hb=197f7ae3460ee6e7d55bf19c434c9c6495e767fa;hp=ed12dfc8f5d4c40ec122470939377d0ed713e431;hpb=14b37e60f4ce1d5667d6e07f85cbf58ff4dc0d78;p=platform%2Fcore%2Fuifw%2Flibtbm.git

diff --git a/src/tbm_bo.c b/src/tbm_bo.c
index ed12dfc..f2870c9 100644
--- a/src/tbm_bo.c
+++ b/src/tbm_bo.c
@@ -35,13 +35,13 @@ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include "list.h"
 
 static pthread_mutex_t tbm_bo_lock = PTHREAD_MUTEX_INITIALIZER;
-static __thread tbm_error_e tbm_last_error = TBM_ERROR_NONE;
 static void _tbm_bo_mutex_unlock(void);
 
 /* check condition */
 #define TBM_BO_RETURN_IF_FAIL(cond) {\
 	if (!(cond)) {\
-		TBM_LOG_E("'%s' failed.\n", #cond);\
+		TBM_ERR("'%s' failed.\n", #cond);\
+		_tbm_set_last_result(TBM_ERROR_INVALID_PARAMETER);\
 		_tbm_bo_mutex_unlock();\
 		return;\
 	} \
@@ -49,18 +49,13 @@ static void _tbm_bo_mutex_unlock(void);
 
 #define TBM_BO_RETURN_VAL_IF_FAIL(cond, val) {\
 	if (!(cond)) {\
-		TBM_LOG_E("'%s' failed.\n", #cond);\
+		TBM_ERR("'%s' failed.\n", #cond);\
+		_tbm_set_last_result(TBM_ERROR_INVALID_PARAMETER);\
 		_tbm_bo_mutex_unlock();\
 		return val;\
 	} \
 }
 
-static void
-_tbm_set_last_result(tbm_error_e err)
-{
-	tbm_last_error = err;
-}
-
 /* LCOV_EXCL_START */
 static bool
 _tbm_bo_mutex_init(void)
@@ -71,7 +66,7 @@ _tbm_bo_mutex_init(void)
 		return true;
 
 	if (pthread_mutex_init(&tbm_bo_lock, NULL)) {
-		TBM_LOG_E("fail: Cannot pthread_mutex_init for tbm_bo_lock.\n");
+		TBM_ERR("fail: Cannot pthread_mutex_init for tbm_bo_lock.\n");
 		return false;
 	}
 
@@ -84,7 +79,7 @@ static void
 _tbm_bo_mutex_lock(void)
 {
 	if (!_tbm_bo_mutex_init()) {
-		TBM_LOG_E("fail: _tbm_bo_mutex_init()\n");
+		TBM_ERR("fail: _tbm_bo_mutex_init()\n");
 		return;
 	}
 
@@ -137,15 +132,15 @@ _tbm_util_check_bo_cnt(tbm_bufmgr bufmgr)
 
 	if ((bufmgr->bo_cnt >= 500) && ((bufmgr->bo_cnt % 20) == 0) &&
 		(bufmgr->bo_cnt > last_chk_bo_cnt)) {
-		TBM_DEBUG("============TBM BO CNT DEBUG: bo_cnt=%d\n", bufmgr->bo_cnt);
+		TBM_DBG("============TBM BO CNT DEBUG: bo_cnt=%d\n", bufmgr->bo_cnt);
 		tbm_bufmgr_debug_show(bufmgr);
 		last_chk_bo_cnt = bufmgr->bo_cnt;
 	}
 }
 /* LCOV_EXCL_STOP */
 
-tbm_user_data
-*user_data_lookup(struct list_head *user_data_list, unsigned long key)
+tbm_user_data *
+user_data_lookup(struct list_head *user_data_list, unsigned long key)
 {
 	tbm_user_data *old_data = NULL;
 
@@ -160,15 +155,16 @@ tbm_user_data
 	return NULL;
 }
 
-tbm_user_data
-*user_data_create(unsigned long key, tbm_data_free data_free_func)
+tbm_user_data *
+user_data_create(unsigned long key, tbm_data_free data_free_func)
 {
 	tbm_user_data *user_data;
 
 	user_data = calloc(1, sizeof(tbm_user_data));
 	if (!user_data) {
 		/* LCOV_EXCL_START */
-		TBM_LOG_E("fail to allocate an user_date\n");
+		TBM_ERR("fail to allocate an user_date\n");
+		_tbm_set_last_result(TBM_ERROR_OUT_OF_MEMORY);
 		return NULL;
 		/* LCOV_EXCL_STOP */
 	}
@@ -194,9 +190,24 @@ static int
 _bo_lock(tbm_bo bo, int device, int opt)
 {
 	int ret = 1;
-
-	if (bo->bufmgr->backend->bo_lock)
-		ret = bo->bufmgr->backend->bo_lock(bo, device, opt);
+	tbm_error_e error;
+
+	if (bo->bufmgr->backend_module_data) {
+		if (bo->bufmgr->bo_func->bo_lock) {
+			error = bo->bufmgr->bo_func->bo_lock(bo->bo_data, device, opt);
+			if (error != TBM_ERROR_NONE) {
+				TBM_WRN("fail to lock");
+				_tbm_set_last_result(error);
+				ret = 0;
+			}
+		}
+	} else {
+		if (bo->bufmgr->backend->bo_lock) {
+			ret = bo->bufmgr->backend->bo_lock(bo, device, opt);
+			if (!ret)
+				_tbm_set_last_result(TBM_ERROR_INVALID_OPERATION);
+		}
+	}
 
 	return ret;
 }
@@ -204,8 +215,20 @@ _bo_lock(tbm_bo bo, int device, int opt)
 static void
 _bo_unlock(tbm_bo bo)
 {
-	if (bo->bufmgr->backend->bo_unlock)
-		bo->bufmgr->backend->bo_unlock(bo);
+	tbm_error_e error;
+
+	if (bo->bufmgr->backend_module_data) {
+		if (bo->bufmgr->bo_func->bo_unlock) {
+			error = bo->bufmgr->bo_func->bo_unlock(bo->bo_data);
+			if (error != TBM_ERROR_NONE) {
+				TBM_WRN("fail to unlock");
+				_tbm_set_last_result(error);
+			}
+		}
+	} else {
+		if (bo->bufmgr->backend->bo_unlock)
+			bo->bufmgr->backend->bo_unlock(bo);
+	}
 }
 
 static int
@@ -221,7 +244,7 @@ _tbm_bo_lock(tbm_bo bo, int device, int opt)
 		return 1;
 
 	if (bo->lock_cnt < 0) {
-		TBM_LOG_E("error bo:%p LOCK_CNT=%d\n",
+		TBM_ERR("error bo:%p LOCK_CNT=%d\n",
 			bo, bo->lock_cnt);
 		return 0;
 	}
@@ -247,13 +270,13 @@ _tbm_bo_lock(tbm_bo bo, int device, int opt)
 			bo->lock_cnt++;
 		break;
 	default:
-		TBM_LOG_E("error bo:%p bo_lock_type[%d] is wrong.\n",
+		TBM_ERR("error bo:%p bo_lock_type[%d] is wrong.\n",
 				bo, bo->bufmgr->bo_lock_type);
 		ret = 0;
 		break;
 	}
 
-	TBM_DBG_LOCK(">> LOCK bo:%p(%d->%d)\n", bo, old, bo->lock_cnt);
+	TBM_DBG(">> LOCK bo:%p(%d->%d)\n", bo, old, bo->lock_cnt);
 
 	return ret;
 }
@@ -284,7 +307,7 @@ _tbm_bo_unlock(tbm_bo bo)
 		}
 		break;
 	default:
-		TBM_LOG_E("error bo:%p bo_lock_type[%d] is wrong.\n",
+		TBM_ERR("error bo:%p bo_lock_type[%d] is wrong.\n",
 				bo, bo->bufmgr->bo_lock_type);
 		break;
 	}
@@ -292,7 +315,7 @@ _tbm_bo_unlock(tbm_bo bo)
 	if (bo->lock_cnt < 0)
 		bo->lock_cnt = 0;
 
-	TBM_DBG_LOCK(">> UNLOCK bo:%p(%d->%d)\n", bo, old, bo->lock_cnt);
+	TBM_DBG(">> UNLOCK bo:%p(%d->%d)\n", bo, old, bo->lock_cnt);
 }
 
 static int
@@ -302,28 +325,27 @@ _tbm_bo_is_valid(tbm_bo bo)
 	tbm_bo old_data = NULL;
 
 	if (bo == NULL) {
-		TBM_LOG_E("error: bo is NULL.\n");
+		TBM_ERR("error: bo is NULL.\n");
 		return 0;
 	}
 
-	bufmgr = bo->bufmgr;
-
-	if (!TBM_BUFMGR_IS_VALID(bufmgr)) {
-		TBM_LOG_E("error: bo->bufmgr is not valid.\n");
+	bufmgr = tbm_bufmgr_get();
+	if (bufmgr == NULL) {
+		TBM_ERR("error: bufmgr is NULL.\n");
 		return 0;
 	}
 
-	if (LIST_IS_EMPTY(&bo->bufmgr->bo_list)) {
-		TBM_LOG_E("error: bo->bo->bufmgr->bo_list is EMPTY.\n");
+	if (LIST_IS_EMPTY(&bufmgr->bo_list)) {
+		TBM_ERR("error: bo->bo->bufmgr->bo_list is EMPTY.\n");
 		return 0;
 	}
 
-	LIST_FOR_EACH_ENTRY(old_data, &bo->bufmgr->bo_list, item_link) {
+	LIST_FOR_EACH_ENTRY(old_data, &bufmgr->bo_list, item_link) {
 		if (old_data == bo)
 			return 1;
 	}
 
-	TBM_LOG_E("error: No valid bo(%p).\n", bo);
+	TBM_ERR("error: No valid bo(%p).\n", bo);
 
 	return 0;
 }
@@ -331,10 +353,13 @@ _tbm_bo_is_valid(tbm_bo bo)
 tbm_bo
 tbm_bo_alloc(tbm_bufmgr bufmgr, int size, int flags)
 {
-	void *bo_priv;
 	tbm_bo bo;
+	void *bo_priv;
+	tbm_backend_bo_data *bo_data;
+	tbm_error_e error;
 
 	_tbm_bo_mutex_lock();
+	_tbm_set_last_result(TBM_ERROR_NONE);
 
 	TBM_BO_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(bufmgr), NULL);
 	TBM_BO_RETURN_VAL_IF_FAIL(size > 0, NULL);
@@ -342,9 +367,9 @@ tbm_bo_alloc(tbm_bufmgr bufmgr, int size, int flags)
 	bo = calloc(1, sizeof(struct _tbm_bo));
 	if (!bo) {
 		/* LCOV_EXCL_START */
-		TBM_LOG_E("error: fail to create of tbm_bo size(%d) flag(%s)\n",
+		TBM_ERR("error: fail to create of tbm_bo size(%d) flag(%s)\n",
 				size, _tbm_flag_to_str(flags));
-		_tbm_set_last_result(TBM_BO_ERROR_HEAP_ALLOC_FAILED);
+		_tbm_set_last_result(TBM_ERROR_OUT_OF_MEMORY);
 		_tbm_bo_mutex_unlock();
 		return NULL;
 		/* LCOV_EXCL_STOP */
@@ -354,25 +379,39 @@ tbm_bo_alloc(tbm_bufmgr bufmgr, int size, int flags)
 
 	bo->bufmgr = bufmgr;
 
-	bo_priv = bo->bufmgr->backend->bo_alloc(bo, size, flags);
-	if (!bo_priv) {
-		/* LCOV_EXCL_START */
-		TBM_LOG_E("error: fail to create of tbm_bo size(%d) flag(%s)\n",
-				size, _tbm_flag_to_str(flags));
-		_tbm_set_last_result(TBM_BO_ERROR_BO_ALLOC_FAILED);
-		free(bo);
-		_tbm_bo_mutex_unlock();
-		return NULL;
-		/* LCOV_EXCL_STOP */
+	if (bufmgr->backend_module_data) {
+		bo_data = bufmgr->bufmgr_func->bufmgr_alloc_bo(bufmgr->bufmgr_data, (unsigned int)size, flags, &error);
+		if (!bo_data) {
+			/* LCOV_EXCL_START */
+			TBM_ERR("error: fail to create of tbm_bo size(%d) flag(%s)\n",
+					size, _tbm_flag_to_str(flags));
+			_tbm_set_last_result(error);
+			free(bo);
+			_tbm_bo_mutex_unlock();
+			return NULL;
+			/* LCOV_EXCL_STOP */
+		}
+		bo->bo_data = bo_data;
+	} else {
+		bo_priv = bo->bufmgr->backend->bo_alloc(bo, size, flags);
+		if (!bo_priv) {
+			/* LCOV_EXCL_START */
+			TBM_ERR("error: fail to create of tbm_bo size(%d) flag(%s)\n",
+					size, _tbm_flag_to_str(flags));
+			_tbm_set_last_result(TBM_ERROR_INVALID_OPERATION);
+			free(bo);
+			_tbm_bo_mutex_unlock();
+			return NULL;
+			/* LCOV_EXCL_STOP */
+		}
+		bo->priv = bo_priv;
 	}
 
 	bo->bufmgr->bo_cnt++;
-
 	bo->ref_cnt = 1;
 	bo->flags = flags;
-	bo->priv = bo_priv;
 
-	TBM_TRACE("bo(%p) size(%d) refcnt(%d), flag(%s)\n", bo, size, bo->ref_cnt,
+	TBM_TRACE_BO("bo(%p) size(%d) refcnt(%d), flag(%s)\n", bo, size, bo->ref_cnt,
 			_tbm_flag_to_str(bo->flags));
 
 	LIST_INITHEAD(&bo->user_data_list);
@@ -388,12 +427,13 @@ tbm_bo
 tbm_bo_ref(tbm_bo bo)
 {
 	_tbm_bo_mutex_lock();
+	_tbm_set_last_result(TBM_ERROR_NONE);
 
 	TBM_BO_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), NULL);
 
 	bo->ref_cnt++;
 
-	TBM_TRACE("bo(%p) ref_cnt(%d)\n", bo, bo->ref_cnt);
+	TBM_TRACE_BO("bo(%p) ref_cnt(%d)\n", bo, bo->ref_cnt);
 
 	_tbm_bo_mutex_unlock();
 
@@ -404,10 +444,11 @@ void
 tbm_bo_unref(tbm_bo bo)
 {
 	_tbm_bo_mutex_lock();
+	_tbm_set_last_result(TBM_ERROR_NONE);
 
 	TBM_BO_RETURN_IF_FAIL(_tbm_bo_is_valid(bo));
 
-	TBM_TRACE("bo(%p) ref_cnt(%d)\n", bo, bo->ref_cnt - 1);
+	TBM_TRACE_BO("bo(%p) ref_cnt(%d)\n", bo, bo->ref_cnt - 1);
 
 	if (bo->ref_cnt <= 0) {
 		_tbm_bo_mutex_unlock();
@@ -425,33 +466,47 @@ tbm_bo_handle
 tbm_bo_map(tbm_bo bo, int device, int opt)
 {
 	tbm_bo_handle bo_handle;
+	tbm_error_e error;
 
 	_tbm_bo_mutex_lock();
+	_tbm_set_last_result(TBM_ERROR_NONE);
 
 	TBM_BO_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), (tbm_bo_handle) NULL);
 
 	if (!_tbm_bo_lock(bo, device, opt)) {
-		_tbm_set_last_result(TBM_BO_ERROR_LOCK_FAILED);
-		TBM_LOG_E("error: fail to lock bo:%p)\n", bo);
+		TBM_ERR("error: fail to lock bo:%p)\n", bo);
 		_tbm_bo_mutex_unlock();
 		return (tbm_bo_handle) NULL;
 	}
 
-	bo_handle = bo->bufmgr->backend->bo_map(bo, device, opt);
-	if (bo_handle.ptr == NULL) {
-		/* LCOV_EXCL_START */
-		_tbm_set_last_result(TBM_BO_ERROR_MAP_FAILED);
-		TBM_LOG_E("error: fail to map bo:%p\n", bo);
-		_tbm_bo_unlock(bo);
-		_tbm_bo_mutex_unlock();
-		return (tbm_bo_handle) NULL;
-		/* LCOV_EXCL_STOP */
+	if (bo->bufmgr->backend_module_data) {
+		bo_handle = bo->bufmgr->bo_func->bo_map(bo->bo_data, device, opt, &error);
+		if (bo_handle.ptr == NULL) {
+			/* LCOV_EXCL_START */
+			_tbm_set_last_result(error);
+			TBM_ERR("error: fail to map bo:%p error:%d\n", bo, error);
+			_tbm_bo_unlock(bo);
+			_tbm_bo_mutex_unlock();
+			return (tbm_bo_handle) NULL;
+			/* LCOV_EXCL_STOP */
+		}
+	} else {
+		bo_handle = bo->bufmgr->backend->bo_map(bo, device, opt);
+		if (bo_handle.ptr == NULL) {
+			/* LCOV_EXCL_START */
+			_tbm_set_last_result(TBM_ERROR_INVALID_OPERATION);
+			TBM_ERR("error: fail to map bo:%p\n", bo);
+			_tbm_bo_unlock(bo);
+			_tbm_bo_mutex_unlock();
+			return (tbm_bo_handle) NULL;
+			/* LCOV_EXCL_STOP */
+		}
 	}
 
 	/* increase the map_count */
 	bo->map_cnt++;
 
-	TBM_TRACE("bo(%p) map_cnt(%d)\n", bo, bo->map_cnt);
+	TBM_TRACE_BO("bo(%p) map_cnt(%d)\n", bo, bo->map_cnt);
 
 	_tbm_bo_mutex_unlock();
 
@@ -461,27 +516,42 @@ tbm_bo_map(tbm_bo bo, int device, int opt)
 int
 tbm_bo_unmap(tbm_bo bo)
 {
-	int ret;
+	int ret = 1;
+	tbm_error_e error;
 
 	_tbm_bo_mutex_lock();
+	_tbm_set_last_result(TBM_ERROR_NONE);
 
 	TBM_BO_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
 	TBM_BO_RETURN_VAL_IF_FAIL(bo->map_cnt > 0, 0);
 
-	ret = bo->bufmgr->backend->bo_unmap(bo);
-	if (!ret) {
-		/* LCOV_EXCL_START */
-		TBM_LOG_E("error: bo(%p) map_cnt(%d)\n", bo, bo->map_cnt);
-		_tbm_set_last_result(TBM_BO_ERROR_UNMAP_FAILED);
-		_tbm_bo_mutex_unlock();
-		return ret;
-		/* LCOV_EXCL_STOP */
+	if (bo->bufmgr->backend_module_data) {
+		error = bo->bufmgr->bo_func->bo_unmap(bo->bo_data);
+		if (error != TBM_ERROR_NONE) {
+			/* LCOV_EXCL_START */
+			TBM_ERR("error: bo(%p) map_cnt(%d) error(%d)\n", bo, bo->map_cnt, error);
+			_tbm_set_last_result(error);
+			ret = 0;
+			_tbm_bo_mutex_unlock();
+			return ret;
+			/* LCOV_EXCL_STOP */
+		}
+	} else {
+		ret = bo->bufmgr->backend->bo_unmap(bo);
+		if (!ret) {
+			/* LCOV_EXCL_START */
+			TBM_ERR("error: bo(%p) map_cnt(%d)\n", bo, bo->map_cnt);
+			_tbm_set_last_result(TBM_ERROR_INVALID_OPERATION);
+			_tbm_bo_mutex_unlock();
+			return ret;
+			/* LCOV_EXCL_STOP */
+		}
 	}
 
 	/* decrease the map_count */
 	bo->map_cnt--;
 
-	TBM_TRACE("bo(%p) map_cnt(%d)\n", bo, bo->map_cnt);
+	TBM_TRACE_BO("bo(%p) map_cnt(%d)\n", bo, bo->map_cnt);
 
 	_tbm_bo_unlock(bo);
 
@@ -494,22 +564,36 @@ tbm_bo_handle
 tbm_bo_get_handle(tbm_bo bo, int device)
 {
 	tbm_bo_handle bo_handle;
+	tbm_error_e error;
 
 	_tbm_bo_mutex_lock();
+	_tbm_set_last_result(TBM_ERROR_NONE);
 
 	TBM_BO_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), (tbm_bo_handle) NULL);
 
-	bo_handle = bo->bufmgr->backend->bo_get_handle(bo, device);
-	if (bo_handle.ptr == NULL) {
-		/* LCOV_EXCL_START */
-		_tbm_set_last_result(TBM_BO_ERROR_GET_HANDLE_FAILED);
-		TBM_LOG_E("error: bo(%p) bo_handle(%p)\n", bo, bo_handle.ptr);
-		_tbm_bo_mutex_unlock();
-		return (tbm_bo_handle) NULL;
-		/* LCOV_EXCL_STOP */
+	if (bo->bufmgr->backend_module_data) {
+		bo_handle = bo->bufmgr->bo_func->bo_get_handle(bo->bo_data, device, &error);
+		if (bo_handle.ptr == NULL) {
+			/* LCOV_EXCL_START */
+			TBM_ERR("error: bo(%p) bo_handle(%p) error(%d)\n", bo, bo_handle.ptr, error);
+			_tbm_set_last_result(error);
+			_tbm_bo_mutex_unlock();
+			return (tbm_bo_handle) NULL;
+			/* LCOV_EXCL_STOP */
+		}
+	} else {
+		bo_handle = bo->bufmgr->backend->bo_get_handle(bo, device);
+		if (bo_handle.ptr == NULL) {
+			/* LCOV_EXCL_START */
+			TBM_ERR("error: bo(%p) bo_handle(%p)\n", bo, bo_handle.ptr);
+			_tbm_set_last_result(TBM_ERROR_INVALID_OPERATION);
+			_tbm_bo_mutex_unlock();
+			return (tbm_bo_handle) NULL;
+			/* LCOV_EXCL_STOP */
+		}
 	}
 
-	TBM_TRACE("bo(%p) bo_handle(%p)\n", bo, bo_handle.ptr);
+	TBM_TRACE_BO("bo(%p) bo_handle(%p)\n", bo, bo_handle.ptr);
 
 	_tbm_bo_mutex_unlock();
 
@@ -520,29 +604,52 @@ tbm_key
 tbm_bo_export(tbm_bo bo)
 {
 	tbm_key ret;
+	tbm_error_e error;
 
 	_tbm_bo_mutex_lock();
+	_tbm_set_last_result(TBM_ERROR_NONE);
 
 	TBM_BO_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
 
-	if (!bo->bufmgr->backend->bo_export) {
-		/* LCOV_EXCL_START */
-		_tbm_bo_mutex_unlock();
-		return 0;
-		/* LCOV_EXCL_STOP */
-	}
+	if (bo->bufmgr->backend_module_data) {
+		if (!bo->bufmgr->bo_func->bo_export_key) {
+			/* LCOV_EXCL_START */
+			_tbm_bo_mutex_unlock();
+			_tbm_set_last_result(TBM_ERROR_NOT_SUPPORTED);
+			return 0;
+			/* LCOV_EXCL_STOP */
+		}
 
-	ret = bo->bufmgr->backend->bo_export(bo);
-	if (!ret) {
-		/* LCOV_EXCL_START */
-		_tbm_set_last_result(TBM_BO_ERROR_EXPORT_FAILED);
-		TBM_LOG_E("error: bo(%p) tbm_key(%d)\n", bo, ret);
-		_tbm_bo_mutex_unlock();
-		return ret;
-		/* LCOV_EXCL_STOP */
+		ret = bo->bufmgr->bo_func->bo_export_key(bo->bo_data, &error);
+		if (!ret) {
+			/* LCOV_EXCL_START */
+			TBM_ERR("error: bo(%p) tbm_key(%d) error(%d)\n", bo, ret, error);
+			_tbm_set_last_result(error);
+			_tbm_bo_mutex_unlock();
+			return ret;
+			/* LCOV_EXCL_STOP */
+		}
+	} else {
+		if (!bo->bufmgr->backend->bo_export) {
+			/* LCOV_EXCL_START */
+			_tbm_bo_mutex_unlock();
+			_tbm_set_last_result(TBM_ERROR_NOT_SUPPORTED);
+			return 0;
+			/* LCOV_EXCL_STOP */
+		}
+
+		ret = bo->bufmgr->backend->bo_export(bo);
+		if (!ret) {
+			/* LCOV_EXCL_START */
+			TBM_ERR("error: bo(%p) tbm_key(%d)\n", bo, ret);
+			_tbm_set_last_result(TBM_ERROR_INVALID_OPERATION);
+			_tbm_bo_mutex_unlock();
+			return ret;
+			/* LCOV_EXCL_STOP */
+		}
 	}
 
-	TBM_TRACE("bo(%p) tbm_key(%u)\n", bo, ret);
+	TBM_TRACE_BO("bo(%p) tbm_key(%u)\n", bo, ret);
 
 	_tbm_bo_mutex_unlock();
 
@@ -553,29 +660,52 @@ tbm_fd
 tbm_bo_export_fd(tbm_bo bo)
 {
 	tbm_fd ret;
+	tbm_error_e error;
 
 	_tbm_bo_mutex_lock();
+	_tbm_set_last_result(TBM_ERROR_NONE);
 
 	TBM_BO_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), -1);
 
-	if (!bo->bufmgr->backend->bo_export_fd) {
-		/* LCOV_EXCL_START */
-		_tbm_bo_mutex_unlock();
-		return -1;
-		/* LCOV_EXCL_STOP */
-	}
+	if (bo->bufmgr->backend_module_data) {
+		if (!bo->bufmgr->bo_func->bo_export_fd) {
+			/* LCOV_EXCL_START */
+			_tbm_bo_mutex_unlock();
+			_tbm_set_last_result(TBM_ERROR_NOT_SUPPORTED);
+			return -1;
+			/* LCOV_EXCL_STOP */
+		}
 
-	ret = bo->bufmgr->backend->bo_export_fd(bo);
-	if (ret < 0) {
-		/* LCOV_EXCL_START */
-		_tbm_set_last_result(TBM_BO_ERROR_EXPORT_FD_FAILED);
-		TBM_LOG_E("error: bo(%p) tbm_fd(%d)\n", bo, ret);
-		_tbm_bo_mutex_unlock();
-		return ret;
-		/* LCOV_EXCL_STOP */
+		ret = bo->bufmgr->bo_func->bo_export_fd(bo->bo_data, &error);
+		if (ret < 0) {
+			/* LCOV_EXCL_START */
+			TBM_ERR("error: bo(%p) tbm_fd(%d) error(%d)\n", bo, ret, error);
+			_tbm_set_last_result(error);
+			_tbm_bo_mutex_unlock();
+			return ret;
+			/* LCOV_EXCL_STOP */
+		}
+	} else {
+		if (!bo->bufmgr->backend->bo_export_fd) {
+			/* LCOV_EXCL_START */
+			_tbm_bo_mutex_unlock();
+			_tbm_set_last_result(TBM_ERROR_NOT_SUPPORTED);
+			return -1;
+			/* LCOV_EXCL_STOP */
+		}
+
+		ret = bo->bufmgr->backend->bo_export_fd(bo);
+		if (ret < 0) {
+			/* LCOV_EXCL_START */
+			TBM_ERR("error: bo(%p) tbm_fd(%d)\n", bo, ret);
+			_tbm_set_last_result(TBM_ERROR_INVALID_OPERATION);
+			_tbm_bo_mutex_unlock();
+			return ret;
+			/* LCOV_EXCL_STOP */
+		}
 	}
 
-	TBM_TRACE("bo(%p) tbm_fd(%d)\n", bo, ret);
+	TBM_TRACE_BO("bo(%p) tbm_fd(%d)\n", bo, ret);
 
 	_tbm_bo_mutex_unlock();
 
@@ -588,16 +718,30 @@ tbm_bo_import(tbm_bufmgr bufmgr, unsigned int key)
 	tbm_bo bo;
 	tbm_bo bo2 = NULL;
 	void *bo_priv;
+	tbm_error_e error;
+	tbm_backend_bo_data *bo_data;
 
 	_tbm_bo_mutex_lock();
+	_tbm_set_last_result(TBM_ERROR_NONE);
 
 	TBM_BO_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(bufmgr), NULL);
 
-	if (!bufmgr->backend->bo_import) {
-		/* LCOV_EXCL_START */
-		_tbm_bo_mutex_unlock();
-		return NULL;
-		/* LCOV_EXCL_STOP */
+	if (bufmgr->backend_module_data) {
+		if (!bufmgr->bufmgr_func->bufmgr_import_key) {
+			/* LCOV_EXCL_START */
+			_tbm_bo_mutex_unlock();
+			_tbm_set_last_result(TBM_ERROR_NOT_SUPPORTED);
+			return NULL;
+			/* LCOV_EXCL_STOP */
+		}
+	} else {
+		if (!bufmgr->backend->bo_import) {
+			/* LCOV_EXCL_START */
+			_tbm_bo_mutex_unlock();
+			_tbm_set_last_result(TBM_ERROR_NOT_SUPPORTED);
+			return NULL;
+			/* LCOV_EXCL_STOP */
+		}
 	}
 
 	_tbm_util_check_bo_cnt(bufmgr);
@@ -605,7 +749,8 @@ tbm_bo_import(tbm_bufmgr bufmgr, unsigned int key)
 	bo = calloc(1, sizeof(struct _tbm_bo));
 	if (!bo) {
 		/* LCOV_EXCL_START */
-		TBM_LOG_E("error: fail to import of tbm_bo by key(%d)\n", key);
+		TBM_ERR("error: fail to import of tbm_bo by key(%d)\n", key);
+		_tbm_set_last_result(TBM_ERROR_OUT_OF_MEMORY);
 		_tbm_bo_mutex_unlock();
 		return NULL;
 		/* LCOV_EXCL_STOP */
@@ -613,42 +758,78 @@ tbm_bo_import(tbm_bufmgr bufmgr, unsigned int key)
 
 	bo->bufmgr = bufmgr;
 
-	bo_priv = bo->bufmgr->backend->bo_import(bo, key);
-	if (!bo_priv) {
-		/* LCOV_EXCL_START */
-		TBM_LOG_E("error: fail to import of tbm_bo by key(%d)\n", key);
-		_tbm_set_last_result(TBM_BO_ERROR_IMPORT_FAILED);
-		free(bo);
-		_tbm_bo_mutex_unlock();
-		return NULL;
-		/* LCOV_EXCL_STOP */
-	}
+	if (bo->bufmgr->backend_module_data) {
+		bo_data = bo->bufmgr->bufmgr_func->bufmgr_import_key(bufmgr->bufmgr_data, key, &error);
+		if (!bo_data) {
+			/* LCOV_EXCL_START */
+			TBM_ERR("error: fail to import of tbm_bo by key(%d). error(%d)\n", key, error);
+			_tbm_set_last_result(error);
+			free(bo);
+			_tbm_bo_mutex_unlock();
+			return NULL;
+			/* LCOV_EXCL_STOP */
+		}
+
+		if (!LIST_IS_EMPTY(&bo->bufmgr->bo_list)) {
+			LIST_FOR_EACH_ENTRY(bo2, &bo->bufmgr->bo_list, item_link) {
+				if (bo2->bo_data == bo_data) {
+					TBM_TRACE_BO("find bo(%p) ref(%d) key(%d) flag(%s) in list\n",
+							bo2, bo2->ref_cnt, key,
+							_tbm_flag_to_str(bo2->flags));
+					bo2->ref_cnt++;
+					free(bo);
+					_tbm_bo_mutex_unlock();
+					return bo2;
+				}
+			}
+		}
+		bo->bo_data = bo_data;
+	} else {
+		bo_priv = bo->bufmgr->backend->bo_import(bo, key);
+		if (!bo_priv) {
+			/* LCOV_EXCL_START */
+			TBM_ERR("error: fail to import of tbm_bo by key(%d)\n", key);
+			_tbm_set_last_result(TBM_ERROR_INVALID_OPERATION);
+			free(bo);
+			_tbm_bo_mutex_unlock();
+			return NULL;
+			/* LCOV_EXCL_STOP */
+		}
 
-	if (!LIST_IS_EMPTY(&bo->bufmgr->bo_list)) {
-		LIST_FOR_EACH_ENTRY(bo2, &bo->bufmgr->bo_list, item_link) {
-			if (bo2->priv == bo_priv) {
-				TBM_TRACE("find bo(%p) ref(%d) key(%d) flag(%s) in list\n",
-						bo2, bo2->ref_cnt, key,
-						_tbm_flag_to_str(bo2->flags));
-				bo2->ref_cnt++;
-				free(bo);
-				_tbm_bo_mutex_unlock();
-				return bo2;
+		if (!LIST_IS_EMPTY(&bo->bufmgr->bo_list)) {
+			LIST_FOR_EACH_ENTRY(bo2, &bo->bufmgr->bo_list, item_link) {
+				if (bo2->priv == bo_priv) {
+					TBM_TRACE_BO("find bo(%p) ref(%d) key(%d) flag(%s) in list\n",
+							bo2, bo2->ref_cnt, key,
+							_tbm_flag_to_str(bo2->flags));
+					bo2->ref_cnt++;
+					free(bo);
+					_tbm_bo_mutex_unlock();
+					return bo2;
+				}
 			}
 		}
+		bo->priv = bo_priv;
 	}
 
 	bo->bufmgr->bo_cnt++;
-
 	bo->ref_cnt = 1;
-	bo->priv = bo_priv;
 
-	if (bo->bufmgr->backend->bo_get_flags)
-		bo->flags = bo->bufmgr->backend->bo_get_flags(bo);
-	else
-		bo->flags = TBM_BO_DEFAULT;
+	if (bo->bufmgr->backend_module_data) {
+		bo->flags = bo->bufmgr->bo_func->bo_get_memory_types(bo->bo_data, &error);
+		if (error != TBM_ERROR_NONE) {
+			TBM_ERR("fail to get the bo flags(memory_types)");
+			_tbm_set_last_result(error);
+			bo->flags = TBM_BO_DEFAULT;
+		}
+	} else {
+		if (bo->bufmgr->backend->bo_get_flags)
+			bo->flags = bo->bufmgr->backend->bo_get_flags(bo);
+		else
+			bo->flags = TBM_BO_DEFAULT;
+	}
 
-	TBM_TRACE("import new bo(%p) ref(%d) key(%d) flag(%s) in list\n",
+	TBM_TRACE_BO("import new bo(%p) ref(%d) key(%d) flag(%s) in list\n",
 			  bo, bo->ref_cnt, key, _tbm_flag_to_str(bo->flags));
 
 	LIST_INITHEAD(&bo->user_data_list);
@@ -666,16 +847,30 @@ tbm_bo_import_fd(tbm_bufmgr bufmgr, tbm_fd fd)
 	tbm_bo bo;
 	tbm_bo bo2 = NULL;
 	void *bo_priv;
+	tbm_backend_bo_data *bo_data;
+	tbm_error_e error;
 
 	_tbm_bo_mutex_lock();
+	_tbm_set_last_result(TBM_ERROR_NONE);
 
 	TBM_BO_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(bufmgr), NULL);
 
-	if (!bufmgr->backend->bo_import_fd) {
-		/* LCOV_EXCL_START */
-		_tbm_bo_mutex_unlock();
-		return NULL;
-		/* LCOV_EXCL_STOP */
+	if (bufmgr->backend_module_data) {
+		if (!bufmgr->bufmgr_func->bufmgr_import_fd) {
+			/* LCOV_EXCL_START */
+			_tbm_bo_mutex_unlock();
+			_tbm_set_last_result(TBM_ERROR_NOT_SUPPORTED);
+			return NULL;
+			/* LCOV_EXCL_STOP */
+		}
+	} else {
+		if (!bufmgr->backend->bo_import_fd) {
+			/* LCOV_EXCL_START */
+			_tbm_bo_mutex_unlock();
+			_tbm_set_last_result(TBM_ERROR_NOT_SUPPORTED);
+			return NULL;
+			/* LCOV_EXCL_STOP */
+		}
 	}
 
 	_tbm_util_check_bo_cnt(bufmgr);
@@ -683,7 +878,8 @@ tbm_bo_import_fd(tbm_bufmgr bufmgr, tbm_fd fd)
 	bo = calloc(1, sizeof(struct _tbm_bo));
 	if (!bo) {
 		/* LCOV_EXCL_START */
-		TBM_LOG_E("error: fail to import tbm_bo by tbm_fd(%d)\n", fd);
+		TBM_ERR("error: fail to import tbm_bo by tbm_fd(%d)\n", fd);
+		_tbm_set_last_result(TBM_ERROR_OUT_OF_MEMORY);
 		_tbm_bo_mutex_unlock();
 		return NULL;
 		/* LCOV_EXCL_STOP */
@@ -691,43 +887,78 @@ tbm_bo_import_fd(tbm_bufmgr bufmgr, tbm_fd fd)
 
 	bo->bufmgr = bufmgr;
 
-	bo_priv = bo->bufmgr->backend->bo_import_fd(bo, fd);
-	if (!bo_priv) {
-		/* LCOV_EXCL_START */
-		TBM_LOG_E("error: fail to import tbm_bo by tbm_fd(%d)\n", fd);
-		_tbm_set_last_result(TBM_BO_ERROR_IMPORT_FD_FAILED);
-		free(bo);
-		_tbm_bo_mutex_unlock();
-		return NULL;
-		/* LCOV_EXCL_STOP */
-	}
+	if (bo->bufmgr->backend_module_data) {
+		bo_data = bo->bufmgr->bufmgr_func->bufmgr_import_fd(bufmgr->bufmgr_data, fd, &error);
+		if (!bo_data) {
+			/* LCOV_EXCL_START */
+			TBM_ERR("error: fail to import tbm_bo by tbm_fd(%d). error(%d)\n", fd, error);
+			_tbm_set_last_result(error);
+			free(bo);
+			_tbm_bo_mutex_unlock();
+			return NULL;
+			/* LCOV_EXCL_STOP */
+		}
 
-	if (!LIST_IS_EMPTY(&bo->bufmgr->bo_list)) {
+		if (!LIST_IS_EMPTY(&bo->bufmgr->bo_list)) {
+			LIST_FOR_EACH_ENTRY(bo2, &bo->bufmgr->bo_list, item_link) {
+				if (bo2->bo_data == bo_data) {
+					TBM_TRACE_BO("find bo(%p) ref(%d) fd(%d) flag(%s) in list\n",
+							bo2, bo2->ref_cnt, fd,
+							_tbm_flag_to_str(bo2->flags));
+					bo2->ref_cnt++;
+					free(bo);
+					_tbm_bo_mutex_unlock();
+					return bo2;
+				}
+			}
+		}
+		bo->bo_data = bo_data;
+	} else {
+		bo_priv = bo->bufmgr->backend->bo_import_fd(bo, fd);
+		if (!bo_priv) {
+			/* LCOV_EXCL_START */
+			TBM_ERR("error: fail to import tbm_bo by tbm_fd(%d)\n", fd);
+			_tbm_set_last_result(TBM_ERROR_INVALID_OPERATION);
+			free(bo);
+			_tbm_bo_mutex_unlock();
+			return NULL;
+			/* LCOV_EXCL_STOP */
+		}
 
-		LIST_FOR_EACH_ENTRY(bo2, &bo->bufmgr->bo_list, item_link) {
-			if (bo2->priv == bo_priv) {
-				TBM_TRACE("find bo(%p) ref(%d) fd(%d) flag(%s) in list\n",
-						bo2, bo2->ref_cnt, fd,
-						_tbm_flag_to_str(bo2->flags));
-				bo2->ref_cnt++;
-				free(bo);
-				_tbm_bo_mutex_unlock();
-				return bo2;
+		if (!LIST_IS_EMPTY(&bo->bufmgr->bo_list)) {
+			LIST_FOR_EACH_ENTRY(bo2, &bo->bufmgr->bo_list, item_link) {
+				if (bo2->priv == bo_priv) {
+					TBM_TRACE_BO("find bo(%p) ref(%d) fd(%d) flag(%s) in list\n",
+							bo2, bo2->ref_cnt, fd,
+							_tbm_flag_to_str(bo2->flags));
+					bo2->ref_cnt++;
+					free(bo);
+					_tbm_bo_mutex_unlock();
+					return bo2;
+				}
 			}
 		}
+		bo->priv = bo_priv;
 	}
 
 	bo->bufmgr->bo_cnt++;
-
 	bo->ref_cnt = 1;
-	bo->priv = bo_priv;
 
-	if (bo->bufmgr->backend->bo_get_flags)
-		bo->flags = bo->bufmgr->backend->bo_get_flags(bo);
-	else
-		bo->flags = TBM_BO_DEFAULT;
+	if (bo->bufmgr->backend_module_data) {
+		bo->flags = bo->bufmgr->bo_func->bo_get_memory_types(bo->bo_data, &error);
+		if (error != TBM_ERROR_NONE) {
+			TBM_ERR("fail to get the bo flags(memory_types)");
+			_tbm_set_last_result(error);
+			bo->flags = TBM_BO_DEFAULT;
+		}
+	} else {
+		if (bo->bufmgr->backend->bo_get_flags)
+			bo->flags = bo->bufmgr->backend->bo_get_flags(bo);
+		else
+			bo->flags = TBM_BO_DEFAULT;
+	}
 
-	TBM_TRACE("import bo(%p) ref(%d) fd(%d) flag(%s)\n",
+	TBM_TRACE_BO("import bo(%p) ref(%d) fd(%d) flag(%s)\n",
 			bo, bo->ref_cnt, fd, _tbm_flag_to_str(bo->flags));
 
 	LIST_INITHEAD(&bo->user_data_list);
@@ -743,14 +974,23 @@ int
 tbm_bo_size(tbm_bo bo)
 {
 	int size;
+	tbm_error_e error;
 
 	_tbm_bo_mutex_lock();
+	_tbm_set_last_result(TBM_ERROR_NONE);
 
 	TBM_BO_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
 
-	size = bo->bufmgr->backend->bo_size(bo);
+	if (bo->bufmgr->backend_module_data) {
+		size = bo->bufmgr->bo_func->bo_get_size(bo->bo_data, &error);
+		if (error != TBM_ERROR_NONE) {
+			TBM_ERR("fail to get the size of the bo_data(%d).", error);
+			_tbm_set_last_result(TBM_ERROR_NONE);
+		}
+	} else
+		size = bo->bufmgr->backend->bo_size(bo);
 
-	TBM_TRACE("bo(%p) size(%d)\n", bo, size);
+	TBM_TRACE_BO("bo(%p) size(%d)\n", bo, size);
 
 	_tbm_bo_mutex_unlock();
 
@@ -761,22 +1001,24 @@ int
 tbm_bo_locked(tbm_bo bo)
 {
 	_tbm_bo_mutex_lock();
+	_tbm_set_last_result(TBM_ERROR_NONE);
 
 	TBM_BO_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
 
 	if (bo->bufmgr->bo_lock_type == TBM_BUFMGR_BO_LOCK_TYPE_NEVER) {
-		TBM_LOG_E("bo(%p) lock_cnt(%d)\n", bo, bo->lock_cnt);
+		TBM_ERR("bo(%p) lock_cnt(%d)\n", bo, bo->lock_cnt);
+		_tbm_set_last_result(TBM_ERROR_INVALID_OPERATION);
 		_tbm_bo_mutex_unlock();
 		return 0;
 	}
 
 	if (bo->lock_cnt > 0) {
-		TBM_TRACE("error: bo(%p) lock_cnt(%d)\n", bo, bo->lock_cnt);
+		TBM_TRACE_BO("error: bo(%p) lock_cnt(%d)\n", bo, bo->lock_cnt);
 		_tbm_bo_mutex_unlock();
 		return 1;
 	}
 
-	TBM_TRACE("bo(%p) lock_cnt(%d)\n", bo, bo->lock_cnt);
+	TBM_TRACE_BO("bo(%p) lock_cnt(%d)\n", bo, bo->lock_cnt);
 	_tbm_bo_mutex_unlock();
 
 	return 0;
@@ -785,23 +1027,43 @@ tbm_bo_locked(tbm_bo bo)
 int
 tbm_bo_swap(tbm_bo bo1, tbm_bo bo2)
 {
+	tbm_error_e error1, error2;
+	int size1 = -1, size2 = -2;
 	void *temp;
 
 	_tbm_bo_mutex_lock();
+	_tbm_set_last_result(TBM_ERROR_NONE);
 
 	TBM_BO_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo1), 0);
 	TBM_BO_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo2), 0);
 
-	TBM_TRACE("before: bo1(%p) bo2(%p)\n", bo1, bo2);
+	TBM_TRACE_BO("before: bo1(%p) bo2(%p)\n", bo1, bo2);
 
-	if (bo1->bufmgr->backend->bo_size(bo1) != bo2->bufmgr->backend->bo_size(bo2)) {
-		_tbm_set_last_result(TBM_BO_ERROR_SWAP_FAILED);
-		TBM_LOG_E("error: bo1(%p) bo2(%p)\n", bo1, bo2);
-		_tbm_bo_mutex_unlock();
-		return 0;
+	if (bo1->bufmgr->backend_module_data) {
+		size1 = bo1->bufmgr->bo_func->bo_get_size(bo1->bo_data, &error1);
+		if (error1 != TBM_ERROR_NONE) {
+			TBM_ERR("fail to get the size of bo1.(%d)", error1);
+			_tbm_set_last_result(error1);
+			goto fail;
+		}
+		size2 = bo2->bufmgr->bo_func->bo_get_size(bo2->bo_data, &error2);
+		if (error2 != TBM_ERROR_NONE) {
+			TBM_ERR("fail to get the size of bo2.(%d)", error2);
+			_tbm_set_last_result(error2);
+			goto fail;
+		}
+	} else {
+		size1 = bo1->bufmgr->backend->bo_size(bo1);
+		size2 = bo2->bufmgr->backend->bo_size(bo2);
+	}
+
+	if (size1 != size2) {
+		TBM_ERR("error: bo1 size(%d) and bo2 size(%d) is different.", size1, size2);
+		_tbm_set_last_result(TBM_ERROR_INVALID_OPERATION);
+		goto fail;
 	}
 
-	TBM_TRACE("after: bo1(%p) bo2(%p)\n", bo1, bo2);
+	TBM_TRACE_BO("after: bo1(%p) bo2(%p)\n", bo1, bo2);
 
 	temp = bo1->priv;
 	bo1->priv = bo2->priv;
@@ -810,6 +1072,12 @@ tbm_bo_swap(tbm_bo bo1, tbm_bo bo2)
 	_tbm_bo_mutex_unlock();
 
 	return 1;
+
+fail:
+	TBM_ERR("error: bo1(%p) bo2(%p)\n", bo1, bo2);
+	_tbm_bo_mutex_unlock();
+
+	return 0;
 }
 
 int
@@ -819,25 +1087,28 @@ tbm_bo_add_user_data(tbm_bo bo, unsigned long key,
 	tbm_user_data *data;
 
 	_tbm_bo_mutex_lock();
+	_tbm_set_last_result(TBM_ERROR_NONE);
 
 	TBM_BO_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
 
 	/* check if the data according to the key exist if so, return false. */
 	data = user_data_lookup(&bo->user_data_list, key);
 	if (data) {
-		TBM_TRACE("warning: user data already exist key(%ld)\n", key);
+		TBM_TRACE_BO("warning: user data already exist key(%ld)\n", key);
+		_tbm_set_last_result(TBM_ERROR_INVALID_PARAMETER);
 		_tbm_bo_mutex_unlock();
 		return 0;
 	}
 
 	data = user_data_create(key, data_free_func);
 	if (!data) {
-		TBM_LOG_E("error: bo(%p) key(%lu)\n", bo, key);
+		TBM_ERR("error: bo(%p) key(%lu)\n", bo, key);
+		_tbm_set_last_result(TBM_ERROR_INVALID_PARAMETER);
 		_tbm_bo_mutex_unlock();
 		return 0;
 	}
 
-	TBM_TRACE("bo(%p) key(%lu) data(%p)\n", bo, key, data->data);
+	TBM_TRACE_BO("bo(%p) key(%lu) data(%p)\n", bo, key, data->data);
 
 	LIST_ADD(&data->item_link, &bo->user_data_list);
 
@@ -852,23 +1123,26 @@ tbm_bo_delete_user_data(tbm_bo bo, unsigned long key)
 	tbm_user_data *old_data;
 
 	_tbm_bo_mutex_lock();
+	_tbm_set_last_result(TBM_ERROR_NONE);
 
 	TBM_BO_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
 
 	if (LIST_IS_EMPTY(&bo->user_data_list)) {
-		TBM_TRACE("error: bo(%p) key(%lu)\n", bo, key);
+		TBM_TRACE_BO("bo(%p) key(%lu)\n", bo, key);
+		_tbm_set_last_result(TBM_ERROR_INVALID_PARAMETER);
 		_tbm_bo_mutex_unlock();
 		return 0;
 	}
 
 	old_data = user_data_lookup(&bo->user_data_list, key);
 	if (!old_data) {
-		TBM_TRACE("error: bo(%p) key(%lu)\n", bo, key);
+		TBM_TRACE_BO("bo(%p) key(%lu)\n", bo, key);
+		_tbm_set_last_result(TBM_ERROR_INVALID_PARAMETER);
 		_tbm_bo_mutex_unlock();
 		return 0;
 	}
 
-	TBM_TRACE("bo(%p) key(%lu) data(%p)\n", bo, key, old_data->data);
+	TBM_TRACE_BO("bo(%p) key(%lu) data(%p)\n", bo, key, old_data->data);
 
 	user_data_delete(old_data);
 
@@ -883,18 +1157,21 @@ tbm_bo_set_user_data(tbm_bo bo, unsigned long key, void *data)
 	tbm_user_data *old_data;
 
 	_tbm_bo_mutex_lock();
+	_tbm_set_last_result(TBM_ERROR_NONE);
 
 	TBM_BO_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
 
 	if (LIST_IS_EMPTY(&bo->user_data_list)) {
-		TBM_TRACE("error: bo(%p) key(%lu)\n", bo, key);
+		TBM_TRACE_BO("error: bo(%p) key(%lu)\n", bo, key);
+		_tbm_set_last_result(TBM_ERROR_INVALID_PARAMETER);
 		_tbm_bo_mutex_unlock();
 		return 0;
 	}
 
 	old_data = user_data_lookup(&bo->user_data_list, key);
 	if (!old_data) {
-		TBM_TRACE("error: bo(%p) key(%lu)\n", bo, key);
+		TBM_TRACE_BO("error: bo(%p) key(%lu)\n", bo, key);
+		_tbm_set_last_result(TBM_ERROR_INVALID_PARAMETER);
 		_tbm_bo_mutex_unlock();
 		return 0;
 	}
@@ -903,7 +1180,7 @@ tbm_bo_set_user_data(tbm_bo bo, unsigned long key, void *data)
 		old_data->free_func(old_data->data);
 	old_data->data = data;
 
-	TBM_TRACE("bo(%p) key(%lu) data(%p)\n", bo, key, old_data->data);
+	TBM_TRACE_BO("bo(%p) key(%lu) data(%p)\n", bo, key, old_data->data);
 
 	_tbm_bo_mutex_unlock();
 
@@ -916,40 +1193,35 @@ tbm_bo_get_user_data(tbm_bo bo, unsigned long key, void **data)
 	tbm_user_data *old_data;
 
 	_tbm_bo_mutex_lock();
+	_tbm_set_last_result(TBM_ERROR_NONE);
 
 	TBM_BO_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
 
 	if (!data || LIST_IS_EMPTY(&bo->user_data_list)) {
-		TBM_TRACE("error: bo(%p) key(%lu)\n", bo, key);
+		TBM_TRACE_BO("error: bo(%p) key(%lu)\n", bo, key);
+		_tbm_set_last_result(TBM_ERROR_INVALID_PARAMETER);
 		_tbm_bo_mutex_unlock();
 		return 0;
 	}
 
 	old_data = user_data_lookup(&bo->user_data_list, key);
 	if (!old_data) {
-		TBM_TRACE("error: bo(%p) key(%lu)\n", bo, key);
 		*data = NULL;
+		TBM_TRACE_BO("error: bo(%p) key(%lu)\n", bo, key);
+		_tbm_set_last_result(TBM_ERROR_INVALID_PARAMETER);
 		_tbm_bo_mutex_unlock();
 		return 0;
 	}
 
 	*data = old_data->data;
 
-	TBM_TRACE("bo(%p) key(%lu) data(%p)\n", bo, key, old_data->data);
+	TBM_TRACE_BO("bo(%p) key(%lu) data(%p)\n", bo, key, old_data->data);
 
 	_tbm_bo_mutex_unlock();
 
 	return 1;
 }
 
-/* LCOV_EXCL_START */
-tbm_error_e
-tbm_get_last_error(void)
-{
-	return tbm_last_error;
-}
-/* LCOV_EXCL_STOP */
-
 int
 tbm_bo_get_flags(tbm_bo bo)
 {
@@ -961,7 +1233,7 @@ tbm_bo_get_flags(tbm_bo bo)
 
 	flags = bo->flags;
 
-	TBM_TRACE("bo(%p)\n", bo);
+	TBM_TRACE_BO("bo(%p)\n", bo);
 
 	_tbm_bo_mutex_unlock();
 
@@ -999,14 +1271,19 @@ _tbm_bo_free(tbm_bo bo)
 	}
 
 	while (bo->lock_cnt > 0) {
-		TBM_LOG_E("error lock_cnt:%d\n", bo->lock_cnt);
+		TBM_ERR("error lock_cnt:%d\n", bo->lock_cnt);
 		_bo_unlock(bo);
 		bo->lock_cnt--;
 	}
 
 	/* call the bo_free */
-	bo->bufmgr->backend->bo_free(bo);
-	bo->priv = NULL;
+	if (bo->bufmgr->backend_module_data) {
+		bo->bufmgr->bo_func->bo_free(bo->bo_data);
+		bo->bo_data = NULL;
+	} else {
+		bo->bufmgr->backend->bo_free(bo);
+		bo->priv = NULL;
+	}
 
 	bo->bufmgr->bo_cnt--;