Пример #1
0
acpi_status
acpi_ds_auto_serialize_method(struct acpi_namespace_node *node,
			      union acpi_operand_object *obj_desc)
{
	acpi_status status;
	union acpi_parse_object *op = NULL;
	struct acpi_walk_state *walk_state;

	ACPI_FUNCTION_TRACE_PTR(ds_auto_serialize_method, node);

	ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
			  "Method auto-serialization parse [%4.4s] %p\n",
			  acpi_ut_get_node_name(node), node));

	acpi_ex_enter_interpreter();

	/* Create/Init a root op for the method parse tree */

	op = acpi_ps_alloc_op(AML_METHOD_OP, obj_desc->method.aml_start);
	if (!op) {
		status = AE_NO_MEMORY;
		goto unlock;
	}

	acpi_ps_set_name(op, node->name.integer);
	op->common.node = node;

	/* Create and initialize a new walk state */

	walk_state =
	    acpi_ds_create_walk_state(node->owner_id, NULL, NULL, NULL);
	if (!walk_state) {
		acpi_ps_free_op(op);
		status = AE_NO_MEMORY;
		goto unlock;
	}

	status = acpi_ds_init_aml_walk(walk_state, op, node,
				       obj_desc->method.aml_start,
				       obj_desc->method.aml_length, NULL, 0);
	if (ACPI_FAILURE(status)) {
		acpi_ds_delete_walk_state(walk_state);
		acpi_ps_free_op(op);
		return_ACPI_STATUS(status);
	}

	walk_state->descending_callback = acpi_ds_detect_named_opcodes;

	/* Parse the method, scan for creation of named objects */

	status = acpi_ps_parse_aml(walk_state);

	acpi_ps_delete_parse_tree(op);
unlock:
	acpi_ex_exit_interpreter();
	return_ACPI_STATUS(status);
}
Пример #2
0
acpi_status
acpi_ns_one_complete_parse (
	u32                     pass_number,
	acpi_table_desc         *table_desc)
{
	acpi_parse_object       *parse_root;
	acpi_status             status;
	acpi_walk_state         *walk_state;


	FUNCTION_TRACE ("Ns_one_complete_parse");


	/* Create and init a Root Node */

	parse_root = acpi_ps_alloc_op (AML_SCOPE_OP);
	if (!parse_root) {
		return_ACPI_STATUS (AE_NO_MEMORY);
	}

	((acpi_parse2_object *) parse_root)->name = ACPI_ROOT_NAME;


	/* Create and initialize a new walk state */

	walk_state = acpi_ds_create_walk_state (TABLE_ID_DSDT,
			   NULL, NULL, NULL);
	if (!walk_state) {
		acpi_ps_free_op (parse_root);
		return_ACPI_STATUS (AE_NO_MEMORY);
	}

	status = acpi_ds_init_aml_walk (walk_state, parse_root, NULL, table_desc->aml_start,
			  table_desc->aml_length, NULL, NULL, pass_number);
	if (ACPI_FAILURE (status)) {
		acpi_ds_delete_walk_state (walk_state);
		return_ACPI_STATUS (status);
	}

	/* Parse the AML */

	ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "*PARSE* pass %d parse\n", pass_number));
	status = acpi_ps_parse_aml (walk_state);

	acpi_ps_delete_parse_tree (parse_root);
	return_ACPI_STATUS (status);
}
Пример #3
0
static acpi_status acpi_ps_execute_pass(struct acpi_evaluate_info *info)
{
    acpi_status status;
    union acpi_parse_object *op;
    struct acpi_walk_state *walk_state;

    ACPI_FUNCTION_TRACE(ps_execute_pass);

    /* Create and init a Root Node */

    op = acpi_ps_create_scope_op();
    if (!op) {
        return_ACPI_STATUS(AE_NO_MEMORY);
    }

    /* Create and initialize a new walk state */

    walk_state =
        acpi_ds_create_walk_state(info->obj_desc->method.owner_id, NULL,
                                  NULL, NULL);
    if (!walk_state) {
        status = AE_NO_MEMORY;
        goto cleanup;
    }

    status = acpi_ds_init_aml_walk(walk_state, op, info->resolved_node,
                                   info->obj_desc->method.aml_start,
                                   info->obj_desc->method.aml_length,
                                   info->pass_number == 1 ? NULL : info,
                                   info->pass_number);
    if (ACPI_FAILURE(status)) {
        acpi_ds_delete_walk_state(walk_state);
        goto cleanup;
    }

    /* Parse the AML */

    status = acpi_ps_parse_aml(walk_state);

    /* Walk state was deleted by parse_aml */

cleanup:
    acpi_ps_delete_parse_tree(op);
    return_ACPI_STATUS(status);
}
/**ltl
 * 功能: ACPI表解析
 * 参数:
 * 返回值:
 * 说明:
 */
acpi_status
acpi_ns_one_complete_parse(u8 pass_number, struct acpi_table_desc *table_desc)
{
	union acpi_parse_object *parse_root;
	acpi_status status;
	struct acpi_walk_state *walk_state;

	ACPI_FUNCTION_TRACE(ns_one_complete_parse);

	/* Create and init a Root Node */
	/* 创建parse对象 */
	parse_root = acpi_ps_create_scope_op();
	if (!parse_root) {
		return_ACPI_STATUS(AE_NO_MEMORY);
	}

	/* Create and initialize a new walk state */
	/* 创建walk state对象 */
	walk_state = acpi_ds_create_walk_state(table_desc->owner_id,
					       NULL, NULL, NULL);
	if (!walk_state) {
		acpi_ps_free_op(parse_root);
		return_ACPI_STATUS(AE_NO_MEMORY);
	}
	/* 初始化init walk */
	status = acpi_ds_init_aml_walk(walk_state, parse_root, NULL,
				       table_desc->aml_start,
				       table_desc->aml_length, NULL,
				       pass_number);
	if (ACPI_FAILURE(status)) {
		acpi_ds_delete_walk_state(walk_state);
		return_ACPI_STATUS(status);
	}

	/* Parse the AML */

	ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "*PARSE* pass %d parse\n",
			  pass_number));
	/* 解析AML */
	status = acpi_ps_parse_aml(walk_state);

	acpi_ps_delete_parse_tree(parse_root);
	return_ACPI_STATUS(status);
}
Пример #5
0
acpi_status acpi_ps_execute_method(struct acpi_evaluate_info *info)
{
	acpi_status status;
	union acpi_parse_object *op;
	struct acpi_walk_state *walk_state;

	ACPI_FUNCTION_TRACE(ps_execute_method);

	/* Quick validation of DSDT header */

	acpi_tb_check_dsdt_header();

	/* Validate the Info and method Node */

	if (!info || !info->resolved_node) {
		return_ACPI_STATUS(AE_NULL_ENTRY);
	}

	/* Init for new method, wait on concurrency semaphore */

	status =
	    acpi_ds_begin_method_execution(info->resolved_node, info->obj_desc,
					   NULL);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/*
	 * The caller "owns" the parameters, so give each one an extra reference
	 */
	acpi_ps_update_parameter_list(info, REF_INCREMENT);

	/* Begin tracing if requested */

	acpi_ps_start_trace(info);

	/*
	 * Execute the method. Performs parse simultaneously
	 */
	ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
			  "**** Begin Method Parse/Execute [%4.4s] **** Node=%p Obj=%p\n",
			  info->resolved_node->name.ascii, info->resolved_node,
			  info->obj_desc));

	/* Create and init a Root Node */

	op = acpi_ps_create_scope_op();
	if (!op) {
		status = AE_NO_MEMORY;
		goto cleanup;
	}

	/* Create and initialize a new walk state */

	info->pass_number = ACPI_IMODE_EXECUTE;
	walk_state =
	    acpi_ds_create_walk_state(info->obj_desc->method.owner_id, NULL,
				      NULL, NULL);
	if (!walk_state) {
		status = AE_NO_MEMORY;
		goto cleanup;
	}

	status = acpi_ds_init_aml_walk(walk_state, op, info->resolved_node,
				       info->obj_desc->method.aml_start,
				       info->obj_desc->method.aml_length, info,
				       info->pass_number);
	if (ACPI_FAILURE(status)) {
		acpi_ds_delete_walk_state(walk_state);
		goto cleanup;
	}

	if (info->obj_desc->method.info_flags & ACPI_METHOD_MODULE_LEVEL) {
		walk_state->parse_flags |= ACPI_PARSE_MODULE_LEVEL;
	}

	/* Invoke an internal method if necessary */

	if (info->obj_desc->method.info_flags & ACPI_METHOD_INTERNAL_ONLY) {
		status =
		    info->obj_desc->method.dispatch.implementation(walk_state);
		info->return_object = walk_state->return_desc;

		/* Cleanup states */

		acpi_ds_scope_stack_clear(walk_state);
		acpi_ps_cleanup_scope(&walk_state->parser_state);
		acpi_ds_terminate_control_method(walk_state->method_desc,
						 walk_state);
		acpi_ds_delete_walk_state(walk_state);
		goto cleanup;
	}

	/*
	 * Start method evaluation with an implicit return of zero.
	 * This is done for Windows compatibility.
	 */
	if (acpi_gbl_enable_interpreter_slack) {
		walk_state->implicit_return_obj =
		    acpi_ut_create_integer_object((u64) 0);
		if (!walk_state->implicit_return_obj) {
			status = AE_NO_MEMORY;
			acpi_ds_delete_walk_state(walk_state);
			goto cleanup;
		}
	}

	/* Parse the AML */

	status = acpi_ps_parse_aml(walk_state);

	/* walk_state was deleted by parse_aml */

      cleanup:
	acpi_ps_delete_parse_tree(op);

	/* End optional tracing */

	acpi_ps_stop_trace(info);

	/* Take away the extra reference that we gave the parameters above */

	acpi_ps_update_parameter_list(info, REF_DECREMENT);

	/* Exit now if error above */

	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/*
	 * If the method has returned an object, signal this to the caller with
	 * a control exception code
	 */
	if (info->return_object) {
		ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "Method returned ObjDesc=%p\n",
				  info->return_object));
		ACPI_DUMP_STACK_ENTRY(info->return_object);

		status = AE_CTRL_RETURN_VALUE;
	}

	return_ACPI_STATUS(status);
}
Пример #6
0
acpi_status acpi_db_second_pass_parse(union acpi_parse_object *root)
{
	union acpi_parse_object *op = root;
	union acpi_parse_object *method;
	union acpi_parse_object *search_op;
	union acpi_parse_object *start_op;
	acpi_status status = AE_OK;
	u32 base_aml_offset;
	struct acpi_walk_state *walk_state;

	ACPI_FUNCTION_ENTRY();

	acpi_os_printf("Pass two parse ....\n");

	while (op) {
		if (op->common.aml_opcode == AML_METHOD_OP) {
			method = op;

			/* Create a new walk state for the parse */

			walk_state =
			    acpi_ds_create_walk_state(0, NULL, NULL, NULL);
			if (!walk_state) {
				return (AE_NO_MEMORY);
			}

			/* Init the Walk State */

			walk_state->parser_state.aml =
			    walk_state->parser_state.aml_start =
			    method->named.data;
			walk_state->parser_state.aml_end =
			    walk_state->parser_state.pkg_end =
			    method->named.data + method->named.length;
			walk_state->parser_state.start_scope = op;

			walk_state->descending_callback =
			    acpi_ds_load1_begin_op;
			walk_state->ascending_callback = acpi_ds_load1_end_op;

			/* Perform the AML parse */

			status = acpi_ps_parse_aml(walk_state);

			base_aml_offset =
			    (method->common.value.arg)->common.aml_offset + 1;
			start_op = (method->common.value.arg)->common.next;
			search_op = start_op;

			while (search_op) {
				search_op->common.aml_offset += base_aml_offset;
				search_op =
				    acpi_ps_get_depth_next(start_op, search_op);
			}
		}

		if (op->common.aml_opcode == AML_REGION_OP) {

			/* TBD: [Investigate] this isn't quite the right thing to do! */
			/*
			 *
			 * Method = (ACPI_DEFERRED_OP *) Op;
			 * Status = acpi_ps_parse_aml (Op, Method->Body, Method->body_length);
			 */
		}

		if (ACPI_FAILURE(status)) {
			break;
		}

		op = acpi_ps_get_depth_next(root, op);
	}

	return (status);
}
Пример #7
0
acpi_status
acpi_ns_one_complete_parse(u32 pass_number,
			   u32 table_index,
			   struct acpi_namespace_node *start_node)
{
	union acpi_parse_object *parse_root;
	acpi_status status;
       u32 aml_length;
	u8 *aml_start;
	struct acpi_walk_state *walk_state;
	struct acpi_table_header *table;
	acpi_owner_id owner_id;

	ACPI_FUNCTION_TRACE(ns_one_complete_parse);

	status = acpi_tb_get_owner_id(table_index, &owner_id);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/*                             */

	parse_root = acpi_ps_create_scope_op();
	if (!parse_root) {
		return_ACPI_STATUS(AE_NO_MEMORY);
	}

	/*                                        */

	walk_state = acpi_ds_create_walk_state(owner_id, NULL, NULL, NULL);
	if (!walk_state) {
		acpi_ps_free_op(parse_root);
		return_ACPI_STATUS(AE_NO_MEMORY);
	}

	status = acpi_get_table_by_index(table_index, &table);
	if (ACPI_FAILURE(status)) {
		acpi_ds_delete_walk_state(walk_state);
		acpi_ps_free_op(parse_root);
		return_ACPI_STATUS(status);
	}

	/*                                                  */

	if (table->length < sizeof(struct acpi_table_header)) {
		status = AE_BAD_HEADER;
	} else {
		aml_start = (u8 *) table + sizeof(struct acpi_table_header);
		aml_length = table->length - sizeof(struct acpi_table_header);
		status = acpi_ds_init_aml_walk(walk_state, parse_root, NULL,
					       aml_start, aml_length, NULL,
					       (u8) pass_number);
	}

	if (ACPI_FAILURE(status)) {
		acpi_ds_delete_walk_state(walk_state);
		goto cleanup;
	}

	/*                                                      */

	if (start_node && start_node != acpi_gbl_root_node) {
		status =
		    acpi_ds_scope_stack_push(start_node, ACPI_TYPE_METHOD,
					     walk_state);
		if (ACPI_FAILURE(status)) {
			acpi_ds_delete_walk_state(walk_state);
			goto cleanup;
		}
	}

	/*               */

	ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "*PARSE* pass %u parse\n",
			  pass_number));
	status = acpi_ps_parse_aml(walk_state);

      cleanup:
	acpi_ps_delete_parse_tree(parse_root);
	return_ACPI_STATUS(status);
}
Пример #8
0
/*******************************************************************************
 *
 * FUNCTION:    acpi_ds_parse_method
 *
 * PARAMETERS:  Node        - Method node
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Parse the AML that is associated with the method.
 *
 * MUTEX:       Assumes parser is locked
 *
 ******************************************************************************/
acpi_status acpi_ds_parse_method(struct acpi_namespace_node *node)
{
	acpi_status status;
	union acpi_operand_object *obj_desc;
	union acpi_parse_object *op;
	struct acpi_walk_state *walk_state;

	ACPI_FUNCTION_TRACE_PTR("ds_parse_method", node);

	/* Parameter Validation */

	if (!node) {
		return_ACPI_STATUS(AE_NULL_ENTRY);
	}

	ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
			  "**** Parsing [%4.4s] **** named_obj=%p\n",
			  acpi_ut_get_node_name(node), node));

	/* Extract the method object from the method Node */

	obj_desc = acpi_ns_get_attached_object(node);
	if (!obj_desc) {
		return_ACPI_STATUS(AE_NULL_OBJECT);
	}

	/* Create a mutex for the method if there is a concurrency limit */

	if ((obj_desc->method.concurrency != ACPI_INFINITE_CONCURRENCY) &&
	    (!obj_desc->method.semaphore)) {
		status = acpi_os_create_semaphore(obj_desc->method.concurrency,
						  obj_desc->method.concurrency,
						  &obj_desc->method.semaphore);
		if (ACPI_FAILURE(status)) {
			return_ACPI_STATUS(status);
		}
	}

	/*
	 * Allocate a new parser op to be the root of the parsed
	 * method tree
	 */
	op = acpi_ps_alloc_op(AML_METHOD_OP);
	if (!op) {
		return_ACPI_STATUS(AE_NO_MEMORY);
	}

	/* Init new op with the method name and pointer back to the Node */

	acpi_ps_set_name(op, node->name.integer);
	op->common.node = node;

	/*
	 * Get a new owner_id for objects created by this method. Namespace
	 * objects (such as Operation Regions) can be created during the
	 * first pass parse.
	 */
	status = acpi_ut_allocate_owner_id(&obj_desc->method.owner_id);
	if (ACPI_FAILURE(status)) {
		goto cleanup;
	}

	/* Create and initialize a new walk state */

	walk_state =
	    acpi_ds_create_walk_state(obj_desc->method.owner_id, NULL, NULL,
				      NULL);
	if (!walk_state) {
		status = AE_NO_MEMORY;
		goto cleanup2;
	}

	status = acpi_ds_init_aml_walk(walk_state, op, node,
				       obj_desc->method.aml_start,
				       obj_desc->method.aml_length, NULL, 1);
	if (ACPI_FAILURE(status)) {
		acpi_ds_delete_walk_state(walk_state);
		goto cleanup2;
	}

	/*
	 * Parse the method, first pass
	 *
	 * The first pass load is where newly declared named objects are added into
	 * the namespace.  Actual evaluation of the named objects (what would be
	 * called a "second pass") happens during the actual execution of the
	 * method so that operands to the named objects can take on dynamic
	 * run-time values.
	 */
	status = acpi_ps_parse_aml(walk_state);
	if (ACPI_FAILURE(status)) {
		goto cleanup2;
	}

	ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
			  "**** [%4.4s] Parsed **** named_obj=%p Op=%p\n",
			  acpi_ut_get_node_name(node), node, op));

	/*
	 * Delete the parse tree. We simply re-parse the method for every
	 * execution since there isn't much overhead (compared to keeping lots
	 * of parse trees around)
	 */
	acpi_ns_delete_namespace_subtree(node);
	acpi_ns_delete_namespace_by_owner(obj_desc->method.owner_id);

      cleanup2:
	acpi_ut_release_owner_id(&obj_desc->method.owner_id);

      cleanup:
	acpi_ps_delete_parse_tree(op);
	return_ACPI_STATUS(status);
}
Пример #9
0
acpi_status acpi_ps_execute_method(struct acpi_evaluate_info *info)
{
	acpi_status status;
	union acpi_parse_object *op;
	struct acpi_walk_state *walk_state;

	ACPI_FUNCTION_TRACE(ps_execute_method);

	

	if (!info || !info->resolved_node) {
		return_ACPI_STATUS(AE_NULL_ENTRY);
	}

	

	status =
	    acpi_ds_begin_method_execution(info->resolved_node, info->obj_desc,
					   NULL);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	
	acpi_ps_update_parameter_list(info, REF_INCREMENT);

	

	acpi_ps_start_trace(info);

	
	ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
			  "**** Begin Method Parse/Execute [%4.4s] **** Node=%p Obj=%p\n",
			  info->resolved_node->name.ascii, info->resolved_node,
			  info->obj_desc));

	

	op = acpi_ps_create_scope_op();
	if (!op) {
		status = AE_NO_MEMORY;
		goto cleanup;
	}

	

	info->pass_number = ACPI_IMODE_EXECUTE;
	walk_state =
	    acpi_ds_create_walk_state(info->obj_desc->method.owner_id, NULL,
				      NULL, NULL);
	if (!walk_state) {
		status = AE_NO_MEMORY;
		goto cleanup;
	}

	status = acpi_ds_init_aml_walk(walk_state, op, info->resolved_node,
				       info->obj_desc->method.aml_start,
				       info->obj_desc->method.aml_length, info,
				       info->pass_number);
	if (ACPI_FAILURE(status)) {
		acpi_ds_delete_walk_state(walk_state);
		goto cleanup;
	}

	if (info->obj_desc->method.flags & AOPOBJ_MODULE_LEVEL) {
		walk_state->parse_flags |= ACPI_PARSE_MODULE_LEVEL;
	}

	

	if (info->obj_desc->method.method_flags & AML_METHOD_INTERNAL_ONLY) {
		status = info->obj_desc->method.implementation(walk_state);
		info->return_object = walk_state->return_desc;

		

		acpi_ds_scope_stack_clear(walk_state);
		acpi_ps_cleanup_scope(&walk_state->parser_state);
		acpi_ds_terminate_control_method(walk_state->method_desc,
						 walk_state);
		acpi_ds_delete_walk_state(walk_state);
		goto cleanup;
	}

	
	if (acpi_gbl_enable_interpreter_slack) {
		walk_state->implicit_return_obj =
		    acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
		if (!walk_state->implicit_return_obj) {
			status = AE_NO_MEMORY;
			acpi_ds_delete_walk_state(walk_state);
			goto cleanup;
		}

		walk_state->implicit_return_obj->integer.value = 0;
	}

	

	status = acpi_ps_parse_aml(walk_state);

	

      cleanup:
	acpi_ps_delete_parse_tree(op);

	

	acpi_ps_stop_trace(info);

	

	acpi_ps_update_parameter_list(info, REF_DECREMENT);

	

	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	
	if (info->return_object) {
		ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "Method returned ObjDesc=%p\n",
				  info->return_object));
		ACPI_DUMP_STACK_ENTRY(info->return_object);

		status = AE_CTRL_RETURN_VALUE;
	}

	return_ACPI_STATUS(status);
}
Пример #10
0
ACPI_STATUS
acpi_ds_parse_method (
	ACPI_HANDLE             obj_handle)
{
	ACPI_STATUS             status;
	ACPI_OPERAND_OBJECT     *obj_desc;
	ACPI_PARSE_OBJECT       *op;
	ACPI_NAMESPACE_NODE     *node;
	ACPI_OWNER_ID           owner_id;


	/* Parameter Validation */

	if (!obj_handle) {
		return (AE_NULL_ENTRY);
	}


	/* Extract the method object from the method Node */

	node = (ACPI_NAMESPACE_NODE *) obj_handle;
	obj_desc = node->object;
	if (!obj_desc) {
		return (AE_NULL_OBJECT);
	}

	 /* Create a mutex for the method if there is a concurrency limit */

	if ((obj_desc->method.concurrency != INFINITE_CONCURRENCY) &&
		(!obj_desc->method.semaphore))
	{
		status = acpi_os_create_semaphore (1,obj_desc->method.concurrency,
				   &obj_desc->method.semaphore);
		if (ACPI_FAILURE (status)) {
			return (status);
		}
	}

	/*
	 * Allocate a new parser op to be the root of the parsed
	 * method tree
	 */

	op = acpi_ps_alloc_op (AML_METHOD_OP);
	if (!op) {
		return (AE_NO_MEMORY);
	}

	/* Init new op with the method name and pointer back to the Node */

	acpi_ps_set_name (op, node->name);
	op->node = node;


	/*
	 * Parse the method, first pass
	 *
	 * The first pass load is
	 * where newly declared named objects are
	 * added into the namespace.  Actual evaluation of
	 * the named objects (what would be called a "second
	 * pass") happens during the actual execution of the
	 * method so that operands to the named objects can
	 * take on dynamic run-time values.
	 */

	status = acpi_ps_parse_aml (op, obj_desc->method.pcode,
			   obj_desc->method.pcode_length,
			   ACPI_PARSE_LOAD_PASS1 | ACPI_PARSE_DELETE_TREE,
			   node, NULL, NULL,
			   acpi_ds_load1_begin_op, acpi_ds_load1_end_op);

	if (ACPI_FAILURE (status)) {
		return (status);
	}

	/* Get a new Owner_id for objects created by this method */

	owner_id = acpi_cm_allocate_owner_id (OWNER_TYPE_METHOD);
	obj_desc->method.owning_id = owner_id;

	/* Install the parsed tree in the method object */
	/* TBD: [Restructure] Obsolete field? */

	acpi_ps_delete_parse_tree (op);


	return (status);
}
Пример #11
0
ACPI_STATUS
acpi_ds_call_control_method (
	ACPI_WALK_LIST          *walk_list,
	ACPI_WALK_STATE         *this_walk_state,
	ACPI_PARSE_OBJECT       *op)
{
	ACPI_STATUS             status;
	ACPI_NAMESPACE_NODE     *method_node;
	ACPI_OPERAND_OBJECT     *obj_desc;
	ACPI_WALK_STATE         *next_walk_state;
	ACPI_PARSE_STATE        *parser_state;
	u32                     i;


	/*
	 * Get the namespace entry for the control method we are about to call
	 */

	method_node = this_walk_state->method_call_node;
	if (!method_node) {
		return (AE_NULL_ENTRY);
	}

	obj_desc = acpi_ns_get_attached_object (method_node);
	if (!obj_desc) {
		return (AE_NULL_OBJECT);
	}


	/* Init for new method, wait on concurrency semaphore */

	status = acpi_ds_begin_method_execution (method_node, obj_desc);
	if (ACPI_FAILURE (status)) {
		return (status);
	}


	/* Create and initialize a new parser state */

	parser_state = acpi_ps_create_state (obj_desc->method.pcode,
			   obj_desc->method.pcode_length);
	if (!parser_state) {
		return (AE_NO_MEMORY);
	}

	acpi_ps_init_scope (parser_state, NULL);
	parser_state->start_node = method_node;


	/* Create a new state for the preempting walk */

	next_walk_state = acpi_ds_create_walk_state (obj_desc->method.owning_id,
			  NULL, obj_desc, walk_list);
	if (!next_walk_state) {
		/* TBD: delete parser state */

		return (AE_NO_MEMORY);
	}

	next_walk_state->walk_type          = WALK_METHOD;
	next_walk_state->method_node        = method_node;
	next_walk_state->parser_state       = parser_state;
	next_walk_state->parse_flags        = this_walk_state->parse_flags;
	next_walk_state->descending_callback = this_walk_state->descending_callback;
	next_walk_state->ascending_callback = this_walk_state->ascending_callback;

	/* The Next_op of the Next_walk will be the beginning of the method */
	/* TBD: [Restructure] -- obsolete? */

	next_walk_state->next_op = NULL;

	/* Open a new scope */

	status = acpi_ds_scope_stack_push (method_node,
			   ACPI_TYPE_METHOD, next_walk_state);
	if (ACPI_FAILURE (status)) {
		goto cleanup;
	}


	/*
	 * Initialize the arguments for the method.  The resolved
	 * arguments were put on the previous walk state's operand
	 * stack.  Operands on the previous walk state stack always
	 * start at index 0.
	 */

	status = acpi_ds_method_data_init_args (&this_walk_state->operands[0],
			 this_walk_state->num_operands,
			 next_walk_state);
	if (ACPI_FAILURE (status)) {
		goto cleanup;
	}


	/* Create and init a Root Node */

	op = acpi_ps_alloc_op (AML_SCOPE_OP);
	if (!op) {
		return (AE_NO_MEMORY);
	}

	status = acpi_ps_parse_aml (op, obj_desc->method.pcode,
			  obj_desc->method.pcode_length,
			  ACPI_PARSE_LOAD_PASS1 | ACPI_PARSE_DELETE_TREE,
			  method_node, NULL, NULL,
			  acpi_ds_load1_begin_op, acpi_ds_load1_end_op);
	acpi_ps_delete_parse_tree (op);


	/*
	 * Delete the operands on the previous walkstate operand stack
	 * (they were copied to new objects)
	 */

	for (i = 0; i < obj_desc->method.param_count; i++) {
		acpi_cm_remove_reference (this_walk_state->operands [i]);
		this_walk_state->operands [i] = NULL;
	}

	/* Clear the operand stack */

	this_walk_state->num_operands = 0;


	return (AE_OK);


	/* On error, we must delete the new walk state */

cleanup:
	acpi_ds_terminate_control_method (next_walk_state);
	acpi_ds_delete_walk_state (next_walk_state);
	return (status);

}
Пример #12
0
acpi_status
acpi_psx_execute (
	struct acpi_parameter_info      *info)
{
	acpi_status                     status;
	union acpi_operand_object       *obj_desc;
	u32                             i;
	union acpi_parse_object         *op;
	struct acpi_walk_state          *walk_state;


	ACPI_FUNCTION_TRACE ("psx_execute");


	/* Validate the Node and get the attached object */

	if (!info || !info->node) {
		return_ACPI_STATUS (AE_NULL_ENTRY);
	}

	obj_desc = acpi_ns_get_attached_object (info->node);
	if (!obj_desc) {
		return_ACPI_STATUS (AE_NULL_OBJECT);
	}

	/* Init for new method, wait on concurrency semaphore */

	status = acpi_ds_begin_method_execution (info->node, obj_desc, NULL);
	if (ACPI_FAILURE (status)) {
		return_ACPI_STATUS (status);
	}

	if ((info->parameter_type == ACPI_PARAM_ARGS) &&
		(info->parameters)) {
		/*
		 * The caller "owns" the parameters, so give each one an extra
		 * reference
		 */
		for (i = 0; info->parameters[i]; i++) {
			acpi_ut_add_reference (info->parameters[i]);
		}
	}

	/*
	 * 1) Perform the first pass parse of the method to enter any
	 * named objects that it creates into the namespace
	 */
	ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
		"**** Begin Method Parse **** Entry=%p obj=%p\n",
		info->node, obj_desc));

	/* Create and init a Root Node */

	op = acpi_ps_create_scope_op ();
	if (!op) {
		status = AE_NO_MEMORY;
		goto cleanup1;
	}

	/*
	 * Get a new owner_id for objects created by this method. Namespace
	 * objects (such as Operation Regions) can be created during the
	 * first pass parse.
	 */
	obj_desc->method.owning_id = acpi_ut_allocate_owner_id (ACPI_OWNER_TYPE_METHOD);

	/* Create and initialize a new walk state */

	walk_state = acpi_ds_create_walk_state (obj_desc->method.owning_id,
			   NULL, NULL, NULL);
	if (!walk_state) {
		status = AE_NO_MEMORY;
		goto cleanup2;
	}

	status = acpi_ds_init_aml_walk (walk_state, op, info->node,
			  obj_desc->method.aml_start,
			  obj_desc->method.aml_length, NULL, 1);
	if (ACPI_FAILURE (status)) {
		goto cleanup3;
	}

	/* Parse the AML */

	status = acpi_ps_parse_aml (walk_state);
	acpi_ps_delete_parse_tree (op);
	if (ACPI_FAILURE (status)) {
		goto cleanup1; /* Walk state is already deleted */
	}

	/*
	 * 2) Execute the method.  Performs second pass parse simultaneously
	 */
	ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
		"**** Begin Method Execution **** Entry=%p obj=%p\n",
		info->node, obj_desc));

	/* Create and init a Root Node */

	op = acpi_ps_create_scope_op ();
	if (!op) {
		status = AE_NO_MEMORY;
		goto cleanup1;
	}

	/* Init new op with the method name and pointer back to the NS node */

	acpi_ps_set_name (op, info->node->name.integer);
	op->common.node = info->node;

	/* Create and initialize a new walk state */

	walk_state = acpi_ds_create_walk_state (0, NULL, NULL, NULL);
	if (!walk_state) {
		status = AE_NO_MEMORY;
		goto cleanup2;
	}

	status = acpi_ds_init_aml_walk (walk_state, op, info->node,
			  obj_desc->method.aml_start,
			  obj_desc->method.aml_length, info, 3);
	if (ACPI_FAILURE (status)) {
		goto cleanup3;
	}

	/* The walk of the parse tree is where we actually execute the method */

	status = acpi_ps_parse_aml (walk_state);
	goto cleanup2; /* Walk state already deleted */


cleanup3:
	acpi_ds_delete_walk_state (walk_state);

cleanup2:
	acpi_ps_delete_parse_tree (op);

cleanup1:
	if ((info->parameter_type == ACPI_PARAM_ARGS) &&
		(info->parameters)) {
		/* Take away the extra reference that we gave the parameters above */

		for (i = 0; info->parameters[i]; i++) {
			/* Ignore errors, just do them all */

			(void) acpi_ut_update_object_reference (
					 info->parameters[i], REF_DECREMENT);
		}
	}

	if (ACPI_FAILURE (status)) {
		return_ACPI_STATUS (status);
	}

	/*
	 * If the method has returned an object, signal this to the caller with
	 * a control exception code
	 */
	if (info->return_object) {
		ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Method returned obj_desc=%p\n",
			info->return_object));
		ACPI_DUMP_STACK_ENTRY (info->return_object);

		status = AE_CTRL_RETURN_VALUE;
	}

	return_ACPI_STATUS (status);
}
Пример #13
0
acpi_status acpi_ps_execute_table(struct acpi_evaluate_info *info)
{
	acpi_status status;
	union acpi_parse_object *op = NULL;
	struct acpi_walk_state *walk_state = NULL;

	ACPI_FUNCTION_TRACE(ps_execute_table);

	/* Create and init a Root Node */

	op = acpi_ps_create_scope_op(info->obj_desc->method.aml_start);
	if (!op) {
		status = AE_NO_MEMORY;
		goto cleanup;
	}

	/* Create and initialize a new walk state */

	walk_state =
	    acpi_ds_create_walk_state(info->obj_desc->method.owner_id, NULL,
				      NULL, NULL);
	if (!walk_state) {
		status = AE_NO_MEMORY;
		goto cleanup;
	}

	status = acpi_ds_init_aml_walk(walk_state, op, info->node,
				       info->obj_desc->method.aml_start,
				       info->obj_desc->method.aml_length, info,
				       info->pass_number);
	if (ACPI_FAILURE(status)) {
		goto cleanup;
	}

	if (info->obj_desc->method.info_flags & ACPI_METHOD_MODULE_LEVEL) {
		walk_state->parse_flags |= ACPI_PARSE_MODULE_LEVEL;
	}

	/* Info->Node is the default location to load the table  */

	if (info->node && info->node != acpi_gbl_root_node) {
		status =
		    acpi_ds_scope_stack_push(info->node, ACPI_TYPE_METHOD,
					     walk_state);
		if (ACPI_FAILURE(status)) {
			goto cleanup;
		}
	}

	/*
	 * Parse the AML, walk_state will be deleted by parse_aml
	 */
	acpi_ex_enter_interpreter();
	status = acpi_ps_parse_aml(walk_state);
	acpi_ex_exit_interpreter();
	walk_state = NULL;

cleanup:
	if (walk_state) {
		acpi_ds_delete_walk_state(walk_state);
	}
	if (op) {
		acpi_ps_delete_parse_tree(op);
	}
	return_ACPI_STATUS(status);
}
acpi_status
acpi_ds_call_control_method(struct acpi_thread_state *thread,
			    struct acpi_walk_state *this_walk_state,
			    union acpi_parse_object *op)
{
	acpi_status status;
	struct acpi_namespace_node *method_node;
	struct acpi_walk_state *next_walk_state = NULL;
	union acpi_operand_object *obj_desc;
	struct acpi_evaluate_info *info;
	u32 i;

	ACPI_FUNCTION_TRACE_PTR(ds_call_control_method, this_walk_state);

	ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
			  "Execute method %p, currentstate=%p\n",
			  this_walk_state->prev_op, this_walk_state));

	/*
	 * Get the namespace entry for the control method we are about to call
	 */
	method_node = this_walk_state->method_call_node;
	if (!method_node) {
		return_ACPI_STATUS(AE_NULL_ENTRY);
	}

	obj_desc = acpi_ns_get_attached_object(method_node);
	if (!obj_desc) {
		return_ACPI_STATUS(AE_NULL_OBJECT);
	}

	/* Init for new method, possibly wait on method mutex */

	status = acpi_ds_begin_method_execution(method_node, obj_desc,
						this_walk_state);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/*
	 * 1) Parse the method. All "normal" methods are parsed for each execution.
	 * Internal methods (_OSI, etc.) do not require parsing.
	 */
	if (!(obj_desc->method.method_flags & AML_METHOD_INTERNAL_ONLY)) {

		/* Create a new walk state for the parse */

		next_walk_state =
		    acpi_ds_create_walk_state(obj_desc->method.owner_id, op,
					      obj_desc, NULL);
		if (!next_walk_state) {
			status = AE_NO_MEMORY;
			goto cleanup;
		}

		/* Create and init a parse tree root */

		op = acpi_ps_create_scope_op();
		if (!op) {
			status = AE_NO_MEMORY;
			goto cleanup;
		}

		status = acpi_ds_init_aml_walk(next_walk_state, op, method_node,
					       obj_desc->method.aml_start,
					       obj_desc->method.aml_length,
					       NULL, 1);
		if (ACPI_FAILURE(status)) {
			acpi_ps_delete_parse_tree(op);
			goto cleanup;
		}

		/* Begin AML parse (deletes next_walk_state) */

		status = acpi_ps_parse_aml(next_walk_state);
		acpi_ps_delete_parse_tree(op);
		if (ACPI_FAILURE(status)) {
			goto cleanup;
		}
	}

	/* 2) Begin method execution. Create a new walk state */

	next_walk_state = acpi_ds_create_walk_state(obj_desc->method.owner_id,
						    NULL, obj_desc, thread);
	if (!next_walk_state) {
		status = AE_NO_MEMORY;
		goto cleanup;
	}

	/*
	 * The resolved arguments were put on the previous walk state's operand
	 * stack. Operands on the previous walk state stack always
	 * start at index 0. Also, null terminate the list of arguments
	 */
	this_walk_state->operands[this_walk_state->num_operands] = NULL;

	/*
	 * Allocate and initialize the evaluation information block
	 * TBD: this is somewhat inefficient, should change interface to
	 * ds_init_aml_walk. For now, keeps this struct off the CPU stack
	 */
	info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
	if (!info) {
		return_ACPI_STATUS(AE_NO_MEMORY);
	}

	info->parameters = &this_walk_state->operands[0];
	info->parameter_type = ACPI_PARAM_ARGS;

	status = acpi_ds_init_aml_walk(next_walk_state, NULL, method_node,
				       obj_desc->method.aml_start,
				       obj_desc->method.aml_length, info, 3);

	ACPI_FREE(info);
	if (ACPI_FAILURE(status)) {
		goto cleanup;
	}

	/*
	 * Delete the operands on the previous walkstate operand stack
	 * (they were copied to new objects)
	 */
	for (i = 0; i < obj_desc->method.param_count; i++) {
		acpi_ut_remove_reference(this_walk_state->operands[i]);
		this_walk_state->operands[i] = NULL;
	}

	/* Clear the operand stack */

	this_walk_state->num_operands = 0;

	ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
			  "Starting nested execution, newstate=%p\n",
			  next_walk_state));

	/* Invoke an internal method if necessary */

	if (obj_desc->method.method_flags & AML_METHOD_INTERNAL_ONLY) {
		status = obj_desc->method.implementation(next_walk_state);
	}

	return_ACPI_STATUS(status);

      cleanup:

	/* On error, we must terminate the method properly */

	acpi_ds_terminate_control_method(obj_desc, next_walk_state);
	if (next_walk_state) {
		acpi_ds_delete_walk_state(next_walk_state);
	}

	return_ACPI_STATUS(status);
}
Пример #15
0
static acpi_status
acpi_ds_execute_arguments(struct acpi_namespace_node *node,
			  struct acpi_namespace_node *scope_node,
			  u32 aml_length, u8 *aml_start)
{
	acpi_status status;
	union acpi_parse_object *op;
	struct acpi_walk_state *walk_state;

	ACPI_FUNCTION_TRACE(ds_execute_arguments);

	/* Allocate a new parser op to be the root of the parsed tree */

	op = acpi_ps_alloc_op(AML_INT_EVAL_SUBTREE_OP);
	if (!op) {
		return_ACPI_STATUS(AE_NO_MEMORY);
	}

	/* Save the Node for use in acpi_ps_parse_aml */

	op->common.node = scope_node;

	/* Create and initialize a new parser state */

	walk_state = acpi_ds_create_walk_state(0, NULL, NULL, NULL);
	if (!walk_state) {
		status = AE_NO_MEMORY;
		goto cleanup;
	}

	status = acpi_ds_init_aml_walk(walk_state, op, NULL, aml_start,
				       aml_length, NULL, ACPI_IMODE_LOAD_PASS1);
	if (ACPI_FAILURE(status)) {
		acpi_ds_delete_walk_state(walk_state);
		goto cleanup;
	}

	/* Mark this parse as a deferred opcode */

	walk_state->parse_flags = ACPI_PARSE_DEFERRED_OP;
	walk_state->deferred_node = node;

	/* Pass1: Parse the entire declaration */

	status = acpi_ps_parse_aml(walk_state);
	if (ACPI_FAILURE(status)) {
		goto cleanup;
	}

	/* Get and init the Op created above */

	op->common.node = node;
	acpi_ps_delete_parse_tree(op);

	/* Evaluate the deferred arguments */

	op = acpi_ps_alloc_op(AML_INT_EVAL_SUBTREE_OP);
	if (!op) {
		return_ACPI_STATUS(AE_NO_MEMORY);
	}

	op->common.node = scope_node;

	/* Create and initialize a new parser state */

	walk_state = acpi_ds_create_walk_state(0, NULL, NULL, NULL);
	if (!walk_state) {
		status = AE_NO_MEMORY;
		goto cleanup;
	}

	/* Execute the opcode and arguments */

	status = acpi_ds_init_aml_walk(walk_state, op, NULL, aml_start,
				       aml_length, NULL, ACPI_IMODE_EXECUTE);
	if (ACPI_FAILURE(status)) {
		acpi_ds_delete_walk_state(walk_state);
		goto cleanup;
	}

	/* Mark this execution as a deferred opcode */

	walk_state->deferred_node = node;
	status = acpi_ps_parse_aml(walk_state);

      cleanup:
	acpi_ps_delete_parse_tree(op);
	return_ACPI_STATUS(status);
}
Пример #16
0
/*******************************************************************************
 *
 * FUNCTION:    ns_one_complete_parse
 *
 * PARAMETERS:  pass_number             - 1 or 2
 *              table_desc              - The table to be parsed.
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Perform one complete parse of an ACPI/AML table.
 *
 ******************************************************************************/
acpi_status
acpi_ns_one_complete_parse(u32 pass_number,
			   u32 table_index,
			   struct acpi_namespace_node *start_node)
{
	union acpi_parse_object *parse_root;
	acpi_status status;
       u32 aml_length;
	u8 *aml_start;
	struct acpi_walk_state *walk_state;
	struct acpi_table_header *table;
	acpi_owner_id owner_id;

	ACPI_FUNCTION_TRACE(ns_one_complete_parse);

	status = acpi_tb_get_owner_id(table_index, &owner_id);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Create and init a Root Node */

	parse_root = acpi_ps_create_scope_op();
	if (!parse_root) {
		return_ACPI_STATUS(AE_NO_MEMORY);
	}

	/* Create and initialize a new walk state */

	walk_state = acpi_ds_create_walk_state(owner_id, NULL, NULL, NULL);
	if (!walk_state) {
		acpi_ps_free_op(parse_root);
		return_ACPI_STATUS(AE_NO_MEMORY);
	}

	status = acpi_get_table_by_index(table_index, &table);
	if (ACPI_FAILURE(status)) {
		acpi_ds_delete_walk_state(walk_state);
		acpi_ps_free_op(parse_root);
		return_ACPI_STATUS(status);
	}

	/* Table must consist of at least a complete header */

	if (table->length < sizeof(struct acpi_table_header)) {
		status = AE_BAD_HEADER;
	} else {
		aml_start = (u8 *) table + sizeof(struct acpi_table_header);
		aml_length = table->length - sizeof(struct acpi_table_header);
		status = acpi_ds_init_aml_walk(walk_state, parse_root, NULL,
					       aml_start, aml_length, NULL,
					       (u8) pass_number);
	}

	/* Found OSDT table, enable the namespace override feature */

	if (ACPI_COMPARE_NAME(table->signature, ACPI_SIG_OSDT) &&
	    pass_number == ACPI_IMODE_LOAD_PASS1) {
		walk_state->namespace_override = TRUE;
	}

	if (ACPI_FAILURE(status)) {
		acpi_ds_delete_walk_state(walk_state);
		goto cleanup;
	}

	/* start_node is the default location to load the table */

	if (start_node && start_node != acpi_gbl_root_node) {
		status =
		    acpi_ds_scope_stack_push(start_node, ACPI_TYPE_METHOD,
					     walk_state);
		if (ACPI_FAILURE(status)) {
			acpi_ds_delete_walk_state(walk_state);
			goto cleanup;
		}
	}

	/* Parse the AML */

	ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "*PARSE* pass %u parse\n",
			  pass_number));
	status = acpi_ps_parse_aml(walk_state);

cleanup:
	acpi_ps_delete_parse_tree(parse_root);
	return_ACPI_STATUS(status);
}
Пример #17
0
acpi_status acpi_ps_execute_method(struct acpi_evaluate_info *info)
{
	acpi_status status;
	union acpi_parse_object *op;
	struct acpi_walk_state *walk_state;

	ACPI_FUNCTION_TRACE(ps_execute_method);

	/* Validate the Info and method Node */

	if (!info || !info->resolved_node) {
		return_ACPI_STATUS(AE_NULL_ENTRY);
	}

	/* Init for new method, wait on concurrency semaphore */

	status =
	    acpi_ds_begin_method_execution(info->resolved_node, info->obj_desc,
					   NULL);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/*
	 * The caller "owns" the parameters, so give each one an extra reference
	 */
	acpi_ps_update_parameter_list(info, REF_INCREMENT);

	/* Begin tracing if requested */

	acpi_ps_start_trace(info);

	/*
	 * Execute the method. Performs parse simultaneously
	 */
	ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
			  "**** Begin Method Parse/Execute [%4.4s] **** Node=%p Obj=%p\n",
			  info->resolved_node->name.ascii, info->resolved_node,
			  info->obj_desc));

	/* Create and init a Root Node */

	op = acpi_ps_create_scope_op();
	if (!op) {
		status = AE_NO_MEMORY;
		goto cleanup;
	}

	/* Create and initialize a new walk state */

	info->pass_number = ACPI_IMODE_EXECUTE;
	walk_state =
	    acpi_ds_create_walk_state(info->obj_desc->method.owner_id, NULL,
				      NULL, NULL);
	if (!walk_state) {
		status = AE_NO_MEMORY;
		goto cleanup;
	}

	status = acpi_ds_init_aml_walk(walk_state, op, info->resolved_node,
				       info->obj_desc->method.aml_start,
				       info->obj_desc->method.aml_length, info,
				       info->pass_number);
	if (ACPI_FAILURE(status)) {
		acpi_ds_delete_walk_state(walk_state);
		goto cleanup;
	}

	/* Parse the AML */

	status = acpi_ps_parse_aml(walk_state);

	/* walk_state was deleted by parse_aml */

      cleanup:
	acpi_ps_delete_parse_tree(op);

	/* End optional tracing */

	acpi_ps_stop_trace(info);

	/* Take away the extra reference that we gave the parameters above */

	acpi_ps_update_parameter_list(info, REF_DECREMENT);

	/* Exit now if error above */

	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/*
	 * If the method has returned an object, signal this to the caller with
	 * a control exception code
	 */
	if (info->return_object) {
		ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "Method returned ObjDesc=%p\n",
				  info->return_object));
		ACPI_DUMP_STACK_ENTRY(info->return_object);

		status = AE_CTRL_RETURN_VALUE;
	}

	return_ACPI_STATUS(status);
}
Пример #18
0
acpi_status
acpi_ds_call_control_method(struct acpi_thread_state *thread,
			    struct acpi_walk_state *this_walk_state,
			    union acpi_parse_object *op)
{
	acpi_status status;
	struct acpi_namespace_node *method_node;
	struct acpi_walk_state *next_walk_state = NULL;
	union acpi_operand_object *obj_desc;
	struct acpi_parameter_info info;
	u32 i;

	ACPI_FUNCTION_TRACE_PTR("ds_call_control_method", this_walk_state);

	ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
			  "Execute method %p, currentstate=%p\n",
			  this_walk_state->prev_op, this_walk_state));

	/*
	 * Get the namespace entry for the control method we are about to call
	 */
	method_node = this_walk_state->method_call_node;
	if (!method_node) {
		return_ACPI_STATUS(AE_NULL_ENTRY);
	}

	obj_desc = acpi_ns_get_attached_object(method_node);
	if (!obj_desc) {
		return_ACPI_STATUS(AE_NULL_OBJECT);
	}

	/* Init for new method, wait on concurrency semaphore */

	status = acpi_ds_begin_method_execution(method_node, obj_desc,
						this_walk_state->method_node);
	if (ACPI_FAILURE(status)) {
		goto cleanup;
	}

	if (!(obj_desc->method.method_flags & AML_METHOD_INTERNAL_ONLY)) {
		/* 1) Parse: Create a new walk state for the preempting walk */

		next_walk_state =
		    acpi_ds_create_walk_state(obj_desc->method.owner_id, op,
					      obj_desc, NULL);
		if (!next_walk_state) {
			return_ACPI_STATUS(AE_NO_MEMORY);
		}

		/* Create and init a Root Node */

		op = acpi_ps_create_scope_op();
		if (!op) {
			status = AE_NO_MEMORY;
			goto cleanup;
		}

		status = acpi_ds_init_aml_walk(next_walk_state, op, method_node,
					       obj_desc->method.aml_start,
					       obj_desc->method.aml_length,
					       NULL, 1);
		if (ACPI_FAILURE(status)) {
			acpi_ds_delete_walk_state(next_walk_state);
			goto cleanup;
		}

		/* Begin AML parse */

		status = acpi_ps_parse_aml(next_walk_state);
		acpi_ps_delete_parse_tree(op);
	}

	/* 2) Execute: Create a new state for the preempting walk */

	next_walk_state = acpi_ds_create_walk_state(obj_desc->method.owner_id,
						    NULL, obj_desc, thread);
	if (!next_walk_state) {
		status = AE_NO_MEMORY;
		goto cleanup;
	}
	/*
	 * The resolved arguments were put on the previous walk state's operand
	 * stack. Operands on the previous walk state stack always
	 * start at index 0. Also, null terminate the list of arguments
	 */
	this_walk_state->operands[this_walk_state->num_operands] = NULL;

	info.parameters = &this_walk_state->operands[0];
	info.parameter_type = ACPI_PARAM_ARGS;

	status = acpi_ds_init_aml_walk(next_walk_state, NULL, method_node,
				       obj_desc->method.aml_start,
				       obj_desc->method.aml_length, &info, 3);
	if (ACPI_FAILURE(status)) {
		goto cleanup;
	}

	/*
	 * Delete the operands on the previous walkstate operand stack
	 * (they were copied to new objects)
	 */
	for (i = 0; i < obj_desc->method.param_count; i++) {
		acpi_ut_remove_reference(this_walk_state->operands[i]);
		this_walk_state->operands[i] = NULL;
	}

	/* Clear the operand stack */

	this_walk_state->num_operands = 0;

	ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
			  "Starting nested execution, newstate=%p\n",
			  next_walk_state));

	if (obj_desc->method.method_flags & AML_METHOD_INTERNAL_ONLY) {
		status = obj_desc->method.implementation(next_walk_state);
	}

	return_ACPI_STATUS(status);

      cleanup:
	/* Decrement the thread count on the method parse tree */

	if (next_walk_state && (next_walk_state->method_desc)) {
		next_walk_state->method_desc->method.thread_count--;
	}

	/* On error, we must delete the new walk state */

	acpi_ds_terminate_control_method(next_walk_state);
	acpi_ds_delete_walk_state(next_walk_state);
	return_ACPI_STATUS(status);
}
Пример #19
0
acpi_status
acpi_psx_execute (
	acpi_namespace_node     *method_node,
	acpi_operand_object     **params,
	acpi_operand_object     **return_obj_desc)
{
	acpi_status             status;
	acpi_operand_object     *obj_desc;
	u32                     i;
	acpi_parse_object       *op;
	acpi_walk_state         *walk_state;


	FUNCTION_TRACE ("Psx_execute");


	/* Validate the Node and get the attached object */

	if (!method_node) {
		return_ACPI_STATUS (AE_NULL_ENTRY);
	}

	obj_desc = acpi_ns_get_attached_object (method_node);
	if (!obj_desc) {
		return_ACPI_STATUS (AE_NULL_OBJECT);
	}

	/* Init for new method, wait on concurrency semaphore */

	status = acpi_ds_begin_method_execution (method_node, obj_desc, NULL);
	if (ACPI_FAILURE (status)) {
		return_ACPI_STATUS (status);
	}

	if (params) {
		/*
		 * The caller "owns" the parameters, so give each one an extra
		 * reference
		 */
		for (i = 0; params[i]; i++) {
			acpi_ut_add_reference (params[i]);
		}
	}

	/*
	 * 1) Perform the first pass parse of the method to enter any
	 * named objects that it creates into the namespace
	 */
	ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
		"**** Begin Method Parse **** Entry=%p obj=%p\n",
		method_node, obj_desc));

	/* Create and init a Root Node */

	op = acpi_ps_alloc_op (AML_SCOPE_OP);
	if (!op) {
		return_ACPI_STATUS (AE_NO_MEMORY);
	}

	/* Create and initialize a new walk state */

	walk_state = acpi_ds_create_walk_state (TABLE_ID_DSDT,
			   NULL, NULL, NULL);
	if (!walk_state) {
		return_ACPI_STATUS (AE_NO_MEMORY);
	}

	status = acpi_ds_init_aml_walk (walk_state, op, method_node, obj_desc->method.aml_start,
			  obj_desc->method.aml_length, NULL, NULL, 1);
	if (ACPI_FAILURE (status)) {
		/* TBD: delete walk state */
		return_ACPI_STATUS (status);
	}

	/* Parse the AML */

	status = acpi_ps_parse_aml (walk_state);
	acpi_ps_delete_parse_tree (op);


	/*
	 * 2) Execute the method.  Performs second pass parse simultaneously
	 */
	ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
		"**** Begin Method Execution **** Entry=%p obj=%p\n",
		method_node, obj_desc));

	/* Create and init a Root Node */

	op = acpi_ps_alloc_op (AML_SCOPE_OP);
	if (!op) {
		return_ACPI_STATUS (AE_NO_MEMORY);
	}

	/* Init new op with the method name and pointer back to the NS node */

	acpi_ps_set_name (op, method_node->name);
	op->node = method_node;

	/* Create and initialize a new walk state */

	walk_state = acpi_ds_create_walk_state (TABLE_ID_DSDT,
			   NULL, NULL, NULL);
	if (!walk_state) {
		return_ACPI_STATUS (AE_NO_MEMORY);
	}

	status = acpi_ds_init_aml_walk (walk_state, op, method_node, obj_desc->method.aml_start,
			  obj_desc->method.aml_length, params, return_obj_desc, 3);
	if (ACPI_FAILURE (status)) {
		/* TBD: delete walk state */
		return_ACPI_STATUS (status);
	}

	/*
	 * The walk of the parse tree is where we actually execute the method
	 */
	status = acpi_ps_parse_aml (walk_state);
	acpi_ps_delete_parse_tree (op);

	if (params) {
		/* Take away the extra reference that we gave the parameters above */

		for (i = 0; params[i]; i++) {
			acpi_ut_update_object_reference (params[i], REF_DECREMENT);
		}
	}


	if (ACPI_FAILURE (status)) {
		DUMP_PATHNAME (method_node, "Ps_execute: method failed -",
			ACPI_LV_ERROR, _COMPONENT);
	}


	/*
	 * If the method has returned an object, signal this to the caller with
	 * a control exception code
	 */
	if (*return_obj_desc) {
		ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Method returned Obj_desc=%p\n",
			*return_obj_desc));
		DUMP_STACK_ENTRY (*return_obj_desc);

		status = AE_CTRL_RETURN_VALUE;
	}


	return_ACPI_STATUS (status);
}
Пример #20
0
acpi_status
acpi_db_second_pass_parse (
	acpi_parse_object       *root)
{
	acpi_parse_object       *op = root;
	acpi_parse2_object      *method;
	acpi_parse_object       *search_op;
	acpi_parse_object       *start_op;
	acpi_status             status = AE_OK;
	u32                     base_aml_offset;
	acpi_walk_state         *walk_state;


	FUNCTION_ENTRY ();


	acpi_os_printf ("Pass two parse ....\n");


	while (op) {
		if (op->opcode == AML_METHOD_OP) {
			method = (acpi_parse2_object *) op;

			walk_state = acpi_ds_create_walk_state (TABLE_ID_DSDT,
					   NULL, NULL, NULL);
			if (!walk_state) {
				return (AE_NO_MEMORY);
			}


			walk_state->parser_state.aml        =
			walk_state->parser_state.aml_start  = method->data;
			walk_state->parser_state.aml_end    =
			walk_state->parser_state.pkg_end    = method->data + method->length;
			walk_state->parser_state.start_scope = op;

			walk_state->descending_callback     = acpi_ds_load1_begin_op;
			walk_state->ascending_callback      = acpi_ds_load1_end_op;


			status = acpi_ps_parse_aml (walk_state);


			base_aml_offset = (method->value.arg)->aml_offset + 1;
			start_op = (method->value.arg)->next;
			search_op = start_op;

			while (search_op) {
				search_op->aml_offset += base_aml_offset;
				search_op = acpi_ps_get_depth_next (start_op, search_op);
			}

		}

		if (op->opcode == AML_REGION_OP) {
			/* TBD: [Investigate] this isn't quite the right thing to do! */
			/*
			 *
			 * Method = (ACPI_DEFERRED_OP *) Op;
			 * Status = Acpi_ps_parse_aml (Op, Method->Body, Method->Body_length);
			 */
		}

		if (ACPI_FAILURE (status)) {
			break;
		}

		op = acpi_ps_get_depth_next (root, op);
	}

	return (status);
}
Пример #21
0
/*******************************************************************************
 *
 * FUNCTION:    ns_one_complete_parse
 *
 * PARAMETERS:  pass_number             - 1 or 2
 *              table_desc              - The table to be parsed.
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Perform one complete parse of an ACPI/AML table.
 *
 ******************************************************************************/
acpi_status
acpi_ns_one_complete_parse(acpi_native_uint pass_number,
			   acpi_native_uint table_index)
{
	union acpi_parse_object *parse_root;
	acpi_status status;
	acpi_native_uint aml_length;
	u8 *aml_start;
	struct acpi_walk_state *walk_state;
	struct acpi_table_header *table;
	acpi_owner_id owner_id;

	ACPI_FUNCTION_TRACE(ns_one_complete_parse);

	status = acpi_tb_get_owner_id(table_index, &owner_id);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Create and init a Root Node */

	parse_root = acpi_ps_create_scope_op();
	if (!parse_root) {
		return_ACPI_STATUS(AE_NO_MEMORY);
	}

	/* Create and initialize a new walk state */

	walk_state = acpi_ds_create_walk_state(owner_id, NULL, NULL, NULL);
	if (!walk_state) {
		acpi_ps_free_op(parse_root);
		return_ACPI_STATUS(AE_NO_MEMORY);
	}

	status = acpi_get_table_by_index(table_index, &table);
	if (ACPI_FAILURE(status)) {
		acpi_ds_delete_walk_state(walk_state);
		acpi_ps_free_op(parse_root);
		return_ACPI_STATUS(status);
	}

	/* Table must consist of at least a complete header */

	if (table->length < sizeof(struct acpi_table_header)) {
		status = AE_BAD_HEADER;
	} else {
		aml_start = (u8 *) table + sizeof(struct acpi_table_header);
		aml_length = table->length - sizeof(struct acpi_table_header);
		status = acpi_ds_init_aml_walk(walk_state, parse_root, NULL,
					       aml_start, aml_length, NULL,
					       (u8) pass_number);
	}

	if (ACPI_FAILURE(status)) {
		acpi_ds_delete_walk_state(walk_state);
		acpi_ps_delete_parse_tree(parse_root);
		return_ACPI_STATUS(status);
	}

	/* Parse the AML */

	ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "*PARSE* pass %d parse\n",
			  (unsigned)pass_number));
	status = acpi_ps_parse_aml(walk_state);

	acpi_ps_delete_parse_tree(parse_root);
	return_ACPI_STATUS(status);
}