Ejemplo n.º 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);
}
Ejemplo n.º 2
0
acpi_status
acpi_ps_delete_completed_op (
	struct acpi_walk_state          *walk_state)
{

	acpi_ps_free_op (walk_state->op);
	return (AE_OK);
}
Ejemplo n.º 3
0
static ACPI_STATUS
acpi_ps_delete_completed_op (
	ACPI_WALK_STATE         *state,
	ACPI_PARSE_OBJECT       *op)
{

	acpi_ps_free_op (op);
	return (AE_OK);
}
Ejemplo n.º 4
0
/*******************************************************************************
 *
 * FUNCTION:    acpi_ps_delete_parse_tree
 *
 * PARAMETERS:  subtree_root        - Root of tree (or subtree) to delete
 *
 * RETURN:      None
 *
 * DESCRIPTION: Delete a portion of or an entire parse tree.
 *
 ******************************************************************************/
void acpi_ps_delete_parse_tree(union acpi_parse_object *subtree_root)
{
	union acpi_parse_object *op = subtree_root;
	union acpi_parse_object *next = NULL;
	union acpi_parse_object *parent = NULL;

	ACPI_FUNCTION_TRACE_PTR(ps_delete_parse_tree, subtree_root);

	/* Visit all nodes in the subtree */

	while (op) {

		/* Check if we are not ascending */

		if (op != parent) {

			/* Look for an argument or child of the current op */

			next = acpi_ps_get_arg(op, 0);
			if (next) {

				/* Still going downward in tree (Op is not completed yet) */

				op = next;
				continue;
			}
		}

		/* No more children, this Op is complete. */

		next = op->common.next;
		parent = op->common.parent;

		acpi_ps_free_op(op);

		/* If we are back to the starting point, the walk is complete. */

		if (op == subtree_root) {
			return_VOID;
		}

		if (next) {
			op = next;
		} else {
			op = parent;
		}
	}

	return_VOID;
}
Ejemplo n.º 5
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);
}
/**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);
}
Ejemplo n.º 7
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);
}
Ejemplo n.º 8
0
acpi_status
acpi_ps_create_op(struct acpi_walk_state *walk_state,
		  u8 *aml_op_start, union acpi_parse_object **new_op)
{
	acpi_status status = AE_OK;
	union acpi_parse_object *op;
	union acpi_parse_object *named_op = NULL;
	union acpi_parse_object *parent_scope;
	u8 argument_count;
	const struct acpi_opcode_info *op_info;

	ACPI_FUNCTION_TRACE_PTR(ps_create_op, walk_state);

	status = acpi_ps_get_aml_opcode(walk_state);
	if (status == AE_CTRL_PARSE_CONTINUE) {
		return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE);
	}
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Create Op structure and append to parent's argument list */

	walk_state->op_info = acpi_ps_get_opcode_info(walk_state->opcode);
	op = acpi_ps_alloc_op(walk_state->opcode, aml_op_start);
	if (!op) {
		return_ACPI_STATUS(AE_NO_MEMORY);
	}

	if (walk_state->op_info->flags & AML_NAMED) {
		status =
		    acpi_ps_build_named_op(walk_state, aml_op_start, op,
					   &named_op);
		acpi_ps_free_op(op);
		if (ACPI_FAILURE(status)) {
			return_ACPI_STATUS(status);
		}

		*new_op = named_op;
		return_ACPI_STATUS(AE_OK);
	}

	/* Not a named opcode, just allocate Op and append to parent */

	if (walk_state->op_info->flags & AML_CREATE) {
		/*
		 * Backup to beginning of create_XXXfield declaration
		 * body_length is unknown until we parse the body
		 */
		op->named.data = aml_op_start;
		op->named.length = 0;
	}

	if (walk_state->opcode == AML_BANK_FIELD_OP) {
		/*
		 * Backup to beginning of bank_field declaration
		 * body_length is unknown until we parse the body
		 */
		op->named.data = aml_op_start;
		op->named.length = 0;
	}

	parent_scope = acpi_ps_get_parent_scope(&(walk_state->parser_state));
	acpi_ps_append_arg(parent_scope, op);

	if (parent_scope) {
		op_info =
		    acpi_ps_get_opcode_info(parent_scope->common.aml_opcode);
		if (op_info->flags & AML_HAS_TARGET) {
			argument_count =
			    acpi_ps_get_argument_count(op_info->type);
			if (parent_scope->common.arg_list_length >
			    argument_count) {
				op->common.flags |= ACPI_PARSEOP_TARGET;
			}
		}

		/*
		 * Special case for both Increment() and Decrement(), where
		 * the lone argument is both a source and a target.
		 */
		else if ((parent_scope->common.aml_opcode == AML_INCREMENT_OP)
			 || (parent_scope->common.aml_opcode ==
			     AML_DECREMENT_OP)) {
			op->common.flags |= ACPI_PARSEOP_TARGET;
		}
	}

	if (walk_state->descending_callback != NULL) {
		/*
		 * Find the object. This will either insert the object into
		 * the namespace or simply look it up
		 */
		walk_state->op = *new_op = op;

		status = walk_state->descending_callback(walk_state, &op);
		status = acpi_ps_next_parse_state(walk_state, op, status);
		if (status == AE_CTRL_PENDING) {
			status = AE_CTRL_PARSE_PENDING;
		}
	}

	return_ACPI_STATUS(status);
}
Ejemplo n.º 9
0
acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state)
{
	acpi_status status = AE_OK;
	acpi_status status2;
	union acpi_parse_object *op = NULL;	/* current op */
	union acpi_parse_object *arg = NULL;
	union acpi_parse_object *pre_op = NULL;
	struct acpi_parse_state *parser_state;
	u8 *aml_op_start = NULL;

	ACPI_FUNCTION_TRACE_PTR("ps_parse_loop", walk_state);

	if (walk_state->descending_callback == NULL) {
		return_ACPI_STATUS(AE_BAD_PARAMETER);
	}

	parser_state = &walk_state->parser_state;
	walk_state->arg_types = 0;

#if (!defined (ACPI_NO_METHOD_EXECUTION) && !defined (ACPI_CONSTANT_EVAL_ONLY))

	if (walk_state->walk_type & ACPI_WALK_METHOD_RESTART) {
		/* We are restarting a preempted control method */

		if (acpi_ps_has_completed_scope(parser_state)) {
			/*
			 * We must check if a predicate to an IF or WHILE statement
			 * was just completed
			 */
			if ((parser_state->scope->parse_scope.op) &&
			    ((parser_state->scope->parse_scope.op->common.
			      aml_opcode == AML_IF_OP)
			     || (parser_state->scope->parse_scope.op->common.
				 aml_opcode == AML_WHILE_OP))
			    && (walk_state->control_state)
			    && (walk_state->control_state->common.state ==
				ACPI_CONTROL_PREDICATE_EXECUTING)) {
				/*
				 * A predicate was just completed, get the value of the
				 * predicate and branch based on that value
				 */
				walk_state->op = NULL;
				status =
				    acpi_ds_get_predicate_value(walk_state,
								ACPI_TO_POINTER
								(TRUE));
				if (ACPI_FAILURE(status)
				    && ((status & AE_CODE_MASK) !=
					AE_CODE_CONTROL)) {
					if (status == AE_AML_NO_RETURN_VALUE) {
						ACPI_EXCEPTION((AE_INFO, status,
								"Invoked method did not return a value"));

					}
					ACPI_EXCEPTION((AE_INFO, status,
							"get_predicate Failed"));
					return_ACPI_STATUS(status);
				}

				status =
				    acpi_ps_next_parse_state(walk_state, op,
							     status);
			}

			acpi_ps_pop_scope(parser_state, &op,
					  &walk_state->arg_types,
					  &walk_state->arg_count);
			ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
					  "Popped scope, Op=%p\n", op));
		} else if (walk_state->prev_op) {
			/* We were in the middle of an op */

			op = walk_state->prev_op;
			walk_state->arg_types = walk_state->prev_arg_types;
		}
	}
#endif

	/* Iterative parsing loop, while there is more AML to process: */

	while ((parser_state->aml < parser_state->aml_end) || (op)) {
		aml_op_start = parser_state->aml;
		if (!op) {
			/* Get the next opcode from the AML stream */

			walk_state->aml_offset =
			    (u32) ACPI_PTR_DIFF(parser_state->aml,
						parser_state->aml_start);
			walk_state->opcode = acpi_ps_peek_opcode(parser_state);

			/*
			 * First cut to determine what we have found:
			 * 1) A valid AML opcode
			 * 2) A name string
			 * 3) An unknown/invalid opcode
			 */
			walk_state->op_info =
			    acpi_ps_get_opcode_info(walk_state->opcode);
			switch (walk_state->op_info->class) {
			case AML_CLASS_ASCII:
			case AML_CLASS_PREFIX:
				/*
				 * Starts with a valid prefix or ASCII char, this is a name
				 * string.  Convert the bare name string to a namepath.
				 */
				walk_state->opcode = AML_INT_NAMEPATH_OP;
				walk_state->arg_types = ARGP_NAMESTRING;
				break;

			case AML_CLASS_UNKNOWN:

				/* The opcode is unrecognized.  Just skip unknown opcodes */

				ACPI_ERROR((AE_INFO,
					    "Found unknown opcode %X at AML address %p offset %X, ignoring",
					    walk_state->opcode,
					    parser_state->aml,
					    walk_state->aml_offset));

				ACPI_DUMP_BUFFER(parser_state->aml, 128);

				/* Assume one-byte bad opcode */

				parser_state->aml++;
				continue;

			default:

				/* Found opcode info, this is a normal opcode */

				parser_state->aml +=
				    acpi_ps_get_opcode_size(walk_state->opcode);
				walk_state->arg_types =
				    walk_state->op_info->parse_args;
				break;
			}

			/* Create Op structure and append to parent's argument list */

			if (walk_state->op_info->flags & AML_NAMED) {
				/* Allocate a new pre_op if necessary */

				if (!pre_op) {
					pre_op =
					    acpi_ps_alloc_op(walk_state->
							     opcode);
					if (!pre_op) {
						status = AE_NO_MEMORY;
						goto close_this_op;
					}
				}

				pre_op->common.value.arg = NULL;
				pre_op->common.aml_opcode = walk_state->opcode;

				/*
				 * Get and append arguments until we find the node that contains
				 * the name (the type ARGP_NAME).
				 */
				while (GET_CURRENT_ARG_TYPE
				       (walk_state->arg_types)
				       &&
				       (GET_CURRENT_ARG_TYPE
					(walk_state->arg_types) != ARGP_NAME)) {
					status =
					    acpi_ps_get_next_arg(walk_state,
								 parser_state,
								 GET_CURRENT_ARG_TYPE
								 (walk_state->
								  arg_types),
								 &arg);
					if (ACPI_FAILURE(status)) {
						goto close_this_op;
					}

					acpi_ps_append_arg(pre_op, arg);
					INCREMENT_ARG_LIST(walk_state->
							   arg_types);
				}

				/*
				 * Make sure that we found a NAME and didn't run out of
				 * arguments
				 */
				if (!GET_CURRENT_ARG_TYPE
				    (walk_state->arg_types)) {
					status = AE_AML_NO_OPERAND;
					goto close_this_op;
				}

				/* We know that this arg is a name, move to next arg */

				INCREMENT_ARG_LIST(walk_state->arg_types);

				/*
				 * Find the object.  This will either insert the object into
				 * the namespace or simply look it up
				 */
				walk_state->op = NULL;

				status =
				    walk_state->descending_callback(walk_state,
								    &op);
				if (ACPI_FAILURE(status)) {
					ACPI_EXCEPTION((AE_INFO, status,
							"During name lookup/catalog"));
					goto close_this_op;
				}

				if (!op) {
					continue;
				}

				status =
				    acpi_ps_next_parse_state(walk_state, op,
							     status);
				if (status == AE_CTRL_PENDING) {
					status = AE_OK;
					goto close_this_op;
				}

				if (ACPI_FAILURE(status)) {
					goto close_this_op;
				}

				acpi_ps_append_arg(op,
						   pre_op->common.value.arg);
				acpi_gbl_depth++;

				if (op->common.aml_opcode == AML_REGION_OP) {
					/*
					 * Defer final parsing of an operation_region body,
					 * because we don't have enough info in the first pass
					 * to parse it correctly (i.e., there may be method
					 * calls within the term_arg elements of the body.)
					 *
					 * However, we must continue parsing because
					 * the opregion is not a standalone package --
					 * we don't know where the end is at this point.
					 *
					 * (Length is unknown until parse of the body complete)
					 */
					op->named.data = aml_op_start;
					op->named.length = 0;
				}
			} else {
				/* Not a named opcode, just allocate Op and append to parent */

				walk_state->op_info =
				    acpi_ps_get_opcode_info(walk_state->opcode);
				op = acpi_ps_alloc_op(walk_state->opcode);
				if (!op) {
					status = AE_NO_MEMORY;
					goto close_this_op;
				}

				if (walk_state->op_info->flags & AML_CREATE) {
					/*
					 * Backup to beginning of create_xXXfield declaration
					 * body_length is unknown until we parse the body
					 */
					op->named.data = aml_op_start;
					op->named.length = 0;
				}

				acpi_ps_append_arg(acpi_ps_get_parent_scope
						   (parser_state), op);

				if ((walk_state->descending_callback != NULL)) {
					/*
					 * Find the object. This will either insert the object into
					 * the namespace or simply look it up
					 */
					walk_state->op = op;

					status =
					    walk_state->
					    descending_callback(walk_state,
								&op);
					status =
					    acpi_ps_next_parse_state(walk_state,
								     op,
								     status);
					if (status == AE_CTRL_PENDING) {
						status = AE_OK;
						goto close_this_op;
					}

					if (ACPI_FAILURE(status)) {
						goto close_this_op;
					}
				}
			}

			op->common.aml_offset = walk_state->aml_offset;

			if (walk_state->op_info) {
				ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
						  "Opcode %4.4X [%s] Op %p Aml %p aml_offset %5.5X\n",
						  (u32) op->common.aml_opcode,
						  walk_state->op_info->name, op,
						  parser_state->aml,
						  op->common.aml_offset));
			}
		}

		/*
		 * Start arg_count at zero because we don't know if there are
		 * any args yet
		 */
		walk_state->arg_count = 0;

		/* Are there any arguments that must be processed? */

		if (walk_state->arg_types) {
			/* Get arguments */

			switch (op->common.aml_opcode) {
			case AML_BYTE_OP:	/* AML_BYTEDATA_ARG */
			case AML_WORD_OP:	/* AML_WORDDATA_ARG */
			case AML_DWORD_OP:	/* AML_DWORDATA_ARG */
			case AML_QWORD_OP:	/* AML_QWORDATA_ARG */
			case AML_STRING_OP:	/* AML_ASCIICHARLIST_ARG */

				/* Fill in constant or string argument directly */

				acpi_ps_get_next_simple_arg(parser_state,
							    GET_CURRENT_ARG_TYPE
							    (walk_state->
							     arg_types), op);
				break;

			case AML_INT_NAMEPATH_OP:	/* AML_NAMESTRING_ARG */

				status =
				    acpi_ps_get_next_namepath(walk_state,
							      parser_state, op,
							      1);
				if (ACPI_FAILURE(status)) {
					goto close_this_op;
				}

				walk_state->arg_types = 0;
				break;

			default:
				/*
				 * Op is not a constant or string, append each argument
				 * to the Op
				 */
				while (GET_CURRENT_ARG_TYPE
				       (walk_state->arg_types)
				       && !walk_state->arg_count) {
					walk_state->aml_offset = (u32)
					    ACPI_PTR_DIFF(parser_state->aml,
							  parser_state->
							  aml_start);

					status =
					    acpi_ps_get_next_arg(walk_state,
								 parser_state,
								 GET_CURRENT_ARG_TYPE
								 (walk_state->
								  arg_types),
								 &arg);
					if (ACPI_FAILURE(status)) {
						goto close_this_op;
					}

					if (arg) {
						arg->common.aml_offset =
						    walk_state->aml_offset;
						acpi_ps_append_arg(op, arg);
					}
					INCREMENT_ARG_LIST(walk_state->
							   arg_types);
				}

				/* Special processing for certain opcodes */

				/* TBD (remove): Temporary mechanism to disable this code if needed */

#ifdef ACPI_ENABLE_MODULE_LEVEL_CODE

				if ((walk_state->pass_number <=
				     ACPI_IMODE_LOAD_PASS1)
				    &&
				    ((walk_state->
				      parse_flags & ACPI_PARSE_DISASSEMBLE) ==
				     0)) {
					/*
					 * We want to skip If/Else/While constructs during Pass1
					 * because we want to actually conditionally execute the
					 * code during Pass2.
					 *
					 * Except for disassembly, where we always want to
					 * walk the If/Else/While packages
					 */
					switch (op->common.aml_opcode) {
					case AML_IF_OP:
					case AML_ELSE_OP:
					case AML_WHILE_OP:

						ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
								  "Pass1: Skipping an If/Else/While body\n"));

						/* Skip body of if/else/while in pass 1 */

						parser_state->aml =
						    parser_state->pkg_end;
						walk_state->arg_count = 0;
						break;

					default:
						break;
					}
				}
#endif
				switch (op->common.aml_opcode) {
				case AML_METHOD_OP:

					/*
					 * Skip parsing of control method
					 * because we don't have enough info in the first pass
					 * to parse it correctly.
					 *
					 * Save the length and address of the body
					 */
					op->named.data = parser_state->aml;
					op->named.length =
					    (u32) (parser_state->pkg_end -
						   parser_state->aml);

					/* Skip body of method */

					parser_state->aml =
					    parser_state->pkg_end;
					walk_state->arg_count = 0;
					break;

				case AML_BUFFER_OP:
				case AML_PACKAGE_OP:
				case AML_VAR_PACKAGE_OP:

					if ((op->common.parent) &&
					    (op->common.parent->common.
					     aml_opcode == AML_NAME_OP)
					    && (walk_state->pass_number <=
						ACPI_IMODE_LOAD_PASS2)) {
						/*
						 * Skip parsing of Buffers and Packages
						 * because we don't have enough info in the first pass
						 * to parse them correctly.
						 */
						op->named.data = aml_op_start;
						op->named.length =
						    (u32) (parser_state->
							   pkg_end -
							   aml_op_start);

						/* Skip body */

						parser_state->aml =
						    parser_state->pkg_end;
						walk_state->arg_count = 0;
					}
					break;

				case AML_WHILE_OP:

					if (walk_state->control_state) {
						walk_state->control_state->
						    control.package_end =
						    parser_state->pkg_end;
					}
					break;

				default:

					/* No action for all other opcodes */
					break;
				}
				break;
			}
		}

		/* Check for arguments that need to be processed */

		if (walk_state->arg_count) {
			/*
			 * There are arguments (complex ones), push Op and
			 * prepare for argument
			 */
			status = acpi_ps_push_scope(parser_state, op,
						    walk_state->arg_types,
						    walk_state->arg_count);
			if (ACPI_FAILURE(status)) {
				goto close_this_op;
			}
			op = NULL;
			continue;
		}

		/*
		 * All arguments have been processed -- Op is complete,
		 * prepare for next
		 */
		walk_state->op_info =
		    acpi_ps_get_opcode_info(op->common.aml_opcode);
		if (walk_state->op_info->flags & AML_NAMED) {
			if (acpi_gbl_depth) {
				acpi_gbl_depth--;
			}

			if (op->common.aml_opcode == AML_REGION_OP) {
				/*
				 * Skip parsing of control method or opregion body,
				 * because we don't have enough info in the first pass
				 * to parse them correctly.
				 *
				 * Completed parsing an op_region declaration, we now
				 * know the length.
				 */
				op->named.length =
				    (u32) (parser_state->aml - op->named.data);
			}
		}

		if (walk_state->op_info->flags & AML_CREATE) {
			/*
			 * Backup to beginning of create_xXXfield declaration (1 for
			 * Opcode)
			 *
			 * body_length is unknown until we parse the body
			 */
			op->named.length =
			    (u32) (parser_state->aml - op->named.data);
		}

		/* This op complete, notify the dispatcher */

		if (walk_state->ascending_callback != NULL) {
			walk_state->op = op;
			walk_state->opcode = op->common.aml_opcode;

			status = walk_state->ascending_callback(walk_state);
			status =
			    acpi_ps_next_parse_state(walk_state, op, status);
			if (status == AE_CTRL_PENDING) {
				status = AE_OK;
				goto close_this_op;
			}
		}

	      close_this_op:
		/*
		 * Finished one argument of the containing scope
		 */
		parser_state->scope->parse_scope.arg_count--;

		/* Finished with pre_op */

		if (pre_op) {
			acpi_ps_free_op(pre_op);
			pre_op = NULL;
		}

		/* Close this Op (will result in parse subtree deletion) */

		status2 = acpi_ps_complete_this_op(walk_state, op);
		if (ACPI_FAILURE(status2)) {
			return_ACPI_STATUS(status2);
		}
		op = NULL;

		switch (status) {
		case AE_OK:
			break;

		case AE_CTRL_TRANSFER:

			/* We are about to transfer to a called method. */

			walk_state->prev_op = op;
			walk_state->prev_arg_types = walk_state->arg_types;
			return_ACPI_STATUS(status);

		case AE_CTRL_END:

			acpi_ps_pop_scope(parser_state, &op,
					  &walk_state->arg_types,
					  &walk_state->arg_count);

			if (op) {
				walk_state->op = op;
				walk_state->op_info =
				    acpi_ps_get_opcode_info(op->common.
							    aml_opcode);
				walk_state->opcode = op->common.aml_opcode;

				status =
				    walk_state->ascending_callback(walk_state);
				status =
				    acpi_ps_next_parse_state(walk_state, op,
							     status);

				status2 =
				    acpi_ps_complete_this_op(walk_state, op);
				if (ACPI_FAILURE(status2)) {
					return_ACPI_STATUS(status2);
				}
				op = NULL;
			}
			status = AE_OK;
			break;

		case AE_CTRL_BREAK:
		case AE_CTRL_CONTINUE:

			/* Pop off scopes until we find the While */

			while (!op || (op->common.aml_opcode != AML_WHILE_OP)) {
				acpi_ps_pop_scope(parser_state, &op,
						  &walk_state->arg_types,
						  &walk_state->arg_count);

				if (op->common.aml_opcode != AML_WHILE_OP) {
					status2 =
					    acpi_ds_result_stack_pop
					    (walk_state);
					if (ACPI_FAILURE(status2)) {
						return_ACPI_STATUS(status2);
					}
				}
			}

			/* Close this iteration of the While loop */

			walk_state->op = op;
			walk_state->op_info =
			    acpi_ps_get_opcode_info(op->common.aml_opcode);
			walk_state->opcode = op->common.aml_opcode;

			status = walk_state->ascending_callback(walk_state);
			status =
			    acpi_ps_next_parse_state(walk_state, op, status);

			status2 = acpi_ps_complete_this_op(walk_state, op);
			if (ACPI_FAILURE(status2)) {
				return_ACPI_STATUS(status2);
			}
			op = NULL;

			status = AE_OK;
			break;

		case AE_CTRL_TERMINATE:

			status = AE_OK;

			/* Clean up */
			do {
				if (op) {
					status2 =
					    acpi_ps_complete_this_op(walk_state,
								     op);
					if (ACPI_FAILURE(status2)) {
						return_ACPI_STATUS(status2);
					}
				}
				acpi_ps_pop_scope(parser_state, &op,
						  &walk_state->arg_types,
						  &walk_state->arg_count);

			} while (op);

			return_ACPI_STATUS(status);

		default:	/* All other non-AE_OK status */

			do {
				if (op) {
					status2 =
					    acpi_ps_complete_this_op(walk_state,
								     op);
					if (ACPI_FAILURE(status2)) {
						return_ACPI_STATUS(status2);
					}
				}
				acpi_ps_pop_scope(parser_state, &op,
						  &walk_state->arg_types,
						  &walk_state->arg_count);

			} while (op);

			/*
			 * TBD: Cleanup parse ops on error
			 */
#if 0
			if (op == NULL) {
				acpi_ps_pop_scope(parser_state, &op,
						  &walk_state->arg_types,
						  &walk_state->arg_count);
			}
#endif
			walk_state->prev_op = op;
			walk_state->prev_arg_types = walk_state->arg_types;
			return_ACPI_STATUS(status);
		}

		/* This scope complete? */

		if (acpi_ps_has_completed_scope(parser_state)) {
			acpi_ps_pop_scope(parser_state, &op,
					  &walk_state->arg_types,
					  &walk_state->arg_count);
			ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
					  "Popped scope, Op=%p\n", op));
		} else {
			op = NULL;
		}

	}			/* while parser_state->Aml */
Ejemplo n.º 10
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);
	}

	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 */

<<<<<<< HEAD
Ejemplo n.º 11
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);
}
Ejemplo n.º 12
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);
}
Ejemplo n.º 13
0
acpi_status
acpi_ps_create_op(struct acpi_walk_state *walk_state,
		  u8 *aml_op_start, union acpi_parse_object **new_op)
{
	acpi_status status = AE_OK;
	union acpi_parse_object *op;
	union acpi_parse_object *named_op = NULL;
	union acpi_parse_object *parent_scope;
	u8 argument_count;
	const struct acpi_opcode_info *op_info;

	ACPI_FUNCTION_TRACE_PTR(ps_create_op, walk_state);

	status = acpi_ps_get_aml_opcode(walk_state);
	if (status == AE_CTRL_PARSE_CONTINUE) {
		return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE);
	}
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Create Op structure and append to parent's argument list */

	walk_state->op_info = acpi_ps_get_opcode_info(walk_state->opcode);
	op = acpi_ps_alloc_op(walk_state->opcode, aml_op_start);
	if (!op) {
		return_ACPI_STATUS(AE_NO_MEMORY);
	}

	if (walk_state->op_info->flags & AML_NAMED) {
		status =
		    acpi_ps_build_named_op(walk_state, aml_op_start, op,
					   &named_op);
		acpi_ps_free_op(op);

#ifdef ACPI_ASL_COMPILER
		if (acpi_gbl_disasm_flag
		    && walk_state->opcode == AML_EXTERNAL_OP
		    && status == AE_NOT_FOUND) {
			/*
			 * If parsing of AML_EXTERNAL_OP's name path fails, then skip
			 * past this opcode and keep parsing. This is a much better
			 * alternative than to abort the entire disassembler. At this
			 * point, the parser_state is at the end of the namepath of the
			 * external declaration opcode. Setting walk_state->Aml to
			 * walk_state->parser_state.Aml + 2 moves increments the
			 * walk_state->Aml past the object type and the paramcount of the
			 * external opcode.
			 */
			walk_state->aml = walk_state->parser_state.aml + 2;
			walk_state->parser_state.aml = walk_state->aml;
			return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE);
		}
#endif
		if (ACPI_FAILURE(status)) {
			return_ACPI_STATUS(status);
		}

		*new_op = named_op;
		return_ACPI_STATUS(AE_OK);
	}

	/* Not a named opcode, just allocate Op and append to parent */

	if (walk_state->op_info->flags & AML_CREATE) {
		/*
		 * Backup to beginning of create_XXXfield declaration
		 * body_length is unknown until we parse the body
		 */
		op->named.data = aml_op_start;
		op->named.length = 0;
	}

	if (walk_state->opcode == AML_BANK_FIELD_OP) {
		/*
		 * Backup to beginning of bank_field declaration
		 * body_length is unknown until we parse the body
		 */
		op->named.data = aml_op_start;
		op->named.length = 0;
	}

	parent_scope = acpi_ps_get_parent_scope(&(walk_state->parser_state));
	acpi_ps_append_arg(parent_scope, op);

	if (parent_scope) {
		op_info =
		    acpi_ps_get_opcode_info(parent_scope->common.aml_opcode);
		if (op_info->flags & AML_HAS_TARGET) {
			argument_count =
			    acpi_ps_get_argument_count(op_info->type);
			if (parent_scope->common.arg_list_length >
			    argument_count) {
				op->common.flags |= ACPI_PARSEOP_TARGET;
			}
		}

		/*
		 * Special case for both Increment() and Decrement(), where
		 * the lone argument is both a source and a target.
		 */
		else if ((parent_scope->common.aml_opcode == AML_INCREMENT_OP)
			 || (parent_scope->common.aml_opcode ==
			     AML_DECREMENT_OP)) {
			op->common.flags |= ACPI_PARSEOP_TARGET;
		}
	}

	if (walk_state->descending_callback != NULL) {
		/*
		 * Find the object. This will either insert the object into
		 * the namespace or simply look it up
		 */
		walk_state->op = *new_op = op;

		status = walk_state->descending_callback(walk_state, &op);
		status = acpi_ps_next_parse_state(walk_state, op, status);
		if (status == AE_CTRL_PENDING) {
			status = AE_CTRL_PARSE_PENDING;
		}
	}

	return_ACPI_STATUS(status);
}