acpi_status
acpi_ns_load_table(u32 table_index, struct acpi_namespace_node *node)
{
acpi_status status;
ACPI_FUNCTION_TRACE(ns_load_table);
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
if (acpi_tb_is_table_loaded(table_index)) {
status = AE_ALREADY_EXISTS;
goto unlock;
}
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"**** Loading table into namespace ****\n"));
status = acpi_tb_allocate_owner_id(table_index);
if (ACPI_FAILURE(status)) {
goto unlock;
}
status = acpi_ns_parse_table(table_index, node);
if (ACPI_SUCCESS(status)) {
acpi_tb_set_table_loaded_flag(table_index, TRUE);
} else {
(void)acpi_tb_release_owner_id(table_index);
}
unlock:
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"**** Begin Table Method Parsing and Object Initialization\n"));
status = acpi_ds_initialize_objects(table_index, node);
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"**** Completed Table Method Parsing and Object Initialization\n"));
return_ACPI_STATUS(status);
}
acpi_status
acpi_ns_load_table(acpi_native_uint table_index,
struct acpi_namespace_node *node)
{
acpi_status status;
ACPI_FUNCTION_TRACE(ns_load_table);
/*
* Parse the table and load the namespace with all named
* objects found within. Control methods are NOT parsed
* at this time. In fact, the control methods cannot be
* parsed until the entire namespace is loaded, because
* if a control method makes a forward reference (call)
* to another control method, we can't continue parsing
* because we don't know how many arguments to parse next!
*/
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* If table already loaded into namespace, just return */
if (acpi_tb_is_table_loaded(table_index)) {
status = AE_ALREADY_EXISTS;
goto unlock;
}
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"**** Loading table into namespace ****\n"));
status = acpi_tb_allocate_owner_id(table_index);
if (ACPI_FAILURE(status)) {
goto unlock;
}
status = acpi_ns_parse_table(table_index, node);
if (ACPI_SUCCESS(status)) {
acpi_tb_set_table_loaded_flag(table_index, TRUE);
} else {
(void)acpi_tb_release_owner_id(table_index);
}
unlock:
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/*
* Now we can parse the control methods. We always parse
* them here for a sanity check, and if configured for
* just-in-time parsing, we delete the control method
* parse trees.
*/
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"**** Begin Table Method Parsing and Object Initialization ****\n"));
status = acpi_ds_initialize_objects(table_index, node);
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"**** Completed Table Method Parsing and Object Initialization ****\n"));
return_ACPI_STATUS(status);
}
acpi_status
acpi_ns_load_table(u32 table_index, struct acpi_namespace_node *node)
{
acpi_status status;
ACPI_FUNCTION_TRACE(ns_load_table);
/* If table already loaded into namespace, just return */
if (acpi_tb_is_table_loaded(table_index)) {
status = AE_ALREADY_EXISTS;
goto unlock;
}
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"**** Loading table into namespace ****\n"));
status = acpi_tb_allocate_owner_id(table_index);
if (ACPI_FAILURE(status)) {
goto unlock;
}
/*
* Parse the table and load the namespace with all named
* objects found within. Control methods are NOT parsed
* at this time. In fact, the control methods cannot be
* parsed until the entire namespace is loaded, because
* if a control method makes a forward reference (call)
* to another control method, we can't continue parsing
* because we don't know how many arguments to parse next!
*/
status = acpi_ns_parse_table(table_index, node);
if (ACPI_SUCCESS(status)) {
acpi_tb_set_table_loaded_flag(table_index, TRUE);
} else {
/*
* On error, delete any namespace objects created by this table.
* We cannot initialize these objects, so delete them. There are
* a couple of especially bad cases:
* AE_ALREADY_EXISTS - namespace collision.
* AE_NOT_FOUND - the target of a Scope operator does not
* exist. This target of Scope must already exist in the
* namespace, as per the ACPI specification.
*/
acpi_ns_delete_namespace_by_owner(acpi_gbl_root_table_list.
tables[table_index].owner_id);
acpi_tb_release_owner_id(table_index);
return_ACPI_STATUS(status);
}
unlock:
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/*
* Now we can parse the control methods. We always parse
* them here for a sanity check, and if configured for
* just-in-time parsing, we delete the control method
* parse trees.
*/
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"**** Begin Table Object Initialization\n"));
acpi_ex_enter_interpreter();
status = acpi_ds_initialize_objects(table_index, node);
acpi_ex_exit_interpreter();
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"**** Completed Table Object Initialization\n"));
/*
* This case handles the legacy option that groups all module-level
* code blocks together and defers execution until all of the tables
* are loaded. Execute all of these blocks at this time.
* Execute any module-level code that was detected during the table
* load phase.
*
* Note: this option is deprecated and will be eliminated in the
* future. Use of this option can cause problems with AML code that
* depends upon in-order immediate execution of module-level code.
*/
acpi_ns_exec_module_code_list();
return_ACPI_STATUS(status);
}
acpi_status
acpi_ns_load_table(u32 table_index, struct acpi_namespace_node *node)
{
acpi_status status;
ACPI_FUNCTION_TRACE(ns_load_table);
/*
* Parse the table and load the namespace with all named
* objects found within. Control methods are NOT parsed
* at this time. In fact, the control methods cannot be
* parsed until the entire namespace is loaded, because
* if a control method makes a forward reference (call)
* to another control method, we can't continue parsing
* because we don't know how many arguments to parse next!
*/
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* If table already loaded into namespace, just return */
if (acpi_tb_is_table_loaded(table_index)) {
status = AE_ALREADY_EXISTS;
goto unlock;
}
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"**** Loading table into namespace ****\n"));
status = acpi_tb_allocate_owner_id(table_index);
if (ACPI_FAILURE(status)) {
goto unlock;
}
status = acpi_ns_parse_table(table_index, node);
if (ACPI_SUCCESS(status)) {
acpi_tb_set_table_loaded_flag(table_index, TRUE);
} else {
/*
* On error, delete any namespace objects created by this table.
* We cannot initialize these objects, so delete them. There are
* a couple of expecially bad cases:
* AE_ALREADY_EXISTS - namespace collision.
* AE_NOT_FOUND - the target of a Scope operator does not
* exist. This target of Scope must already exist in the
* namespace, as per the ACPI specification.
*/
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
acpi_ns_delete_namespace_by_owner(acpi_gbl_root_table_list.
tables[table_index].owner_id);
acpi_tb_release_owner_id(table_index);
return_ACPI_STATUS(status);
}
unlock:
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/*
* Now we can parse the control methods. We always parse
* them here for a sanity check, and if configured for
* just-in-time parsing, we delete the control method
* parse trees.
*/
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"**** Begin Table Object Initialization\n"));
status = acpi_ds_initialize_objects(table_index, node);
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"**** Completed Table Object Initialization\n"));
/*
* Execute any module-level code that was detected during the table load
* phase. Although illegal since ACPI 2.0, there are many machines that
* contain this type of code. Each block of detected executable AML code
* outside of any control method is wrapped with a temporary control
* method object and placed on a global list. The methods on this list
* are executed below.
*
* This case executes the module-level code for each table immediately
* after the table has been loaded. This provides compatibility with
* other ACPI implementations. Optionally, the execution can be deferred
* until later, see acpi_initialize_objects.
*/
if (!acpi_gbl_group_module_level_code) {
acpi_ns_exec_module_code_list();
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_unload_parent_table
*
* PARAMETERS: object - Handle to any namespace object owned by
* the table to be unloaded
*
* RETURN: Status
*
* DESCRIPTION: Via any namespace object within an SSDT or OEMx table, unloads
* the table and deletes all namespace objects associated with
* that table. Unloading of the DSDT is not allowed.
* Note: Mainly intended to support hotplug removal of SSDTs.
*
******************************************************************************/
acpi_status acpi_unload_parent_table(acpi_handle object)
{
struct acpi_namespace_node *node =
ACPI_CAST_PTR(struct acpi_namespace_node, object);
acpi_status status = AE_NOT_EXIST;
acpi_owner_id owner_id;
u32 i;
ACPI_FUNCTION_TRACE(acpi_unload_parent_table);
/* Parameter validation */
if (!object) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/*
* The node owner_id is currently the same as the parent table ID.
* However, this could change in the future.
*/
owner_id = node->owner_id;
if (!owner_id) {
/* owner_id==0 means DSDT is the owner. DSDT cannot be unloaded */
return_ACPI_STATUS(AE_TYPE);
}
/* Must acquire the interpreter lock during this operation */
status = acpi_ut_acquire_mutex(ACPI_MTX_INTERPRETER);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Find the table in the global table list */
for (i = 0; i < acpi_gbl_root_table_list.current_table_count; i++) {
if (owner_id != acpi_gbl_root_table_list.tables[i].owner_id) {
continue;
}
/*
* Allow unload of SSDT and OEMx tables only. Do not allow unload
* of the DSDT. No other types of tables should get here, since
* only these types can contain AML and thus are the only types
* that can create namespace objects.
*/
if (ACPI_COMPARE_NAME
(acpi_gbl_root_table_list.tables[i].signature.ascii,
ACPI_SIG_DSDT)) {
status = AE_TYPE;
break;
}
/* Ensure the table is actually loaded */
if (!acpi_tb_is_table_loaded(i)) {
status = AE_NOT_EXIST;
break;
}
/* Invoke table handler if present */
if (acpi_gbl_table_handler) {
(void)acpi_gbl_table_handler(ACPI_TABLE_EVENT_UNLOAD,
acpi_gbl_root_table_list.
tables[i].pointer,
acpi_gbl_table_handler_context);
}
/*
* Delete all namespace objects owned by this table. Note that
* these objects can appear anywhere in the namespace by virtue
* of the AML "Scope" operator. Thus, we need to track ownership
* by an ID, not simply a position within the hierarchy.
*/
status = acpi_tb_delete_namespace_by_owner(i);
if (ACPI_FAILURE(status)) {
break;
}
status = acpi_tb_release_owner_id(i);
acpi_tb_set_table_loaded_flag(i, FALSE);
break;
}
(void)acpi_ut_release_mutex(ACPI_MTX_INTERPRETER);
return_ACPI_STATUS(status);
}