ACPI_STATUS
AcpiDsBuildInternalObject (
ACPI_WALK_STATE *WalkState,
ACPI_PARSE_OBJECT *Op,
ACPI_OPERAND_OBJECT **ObjDescPtr)
{
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_STATUS Status;
ACPI_FUNCTION_TRACE ("DsBuildInternalObject");
*ObjDescPtr = NULL;
if (Op->Common.AmlOpcode == AML_INT_NAMEPATH_OP)
{
/*
* This is an named object reference. If this name was
* previously looked up in the namespace, it was stored in this op.
* Otherwise, go ahead and look it up now
*/
if (!Op->Common.Node)
{
Status = AcpiNsLookup (WalkState->ScopeInfo, Op->Common.Value.String,
ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, NULL,
(ACPI_NAMESPACE_NODE **) &(Op->Common.Node));
if (ACPI_FAILURE (Status))
{
ACPI_REPORT_NSERROR (Op->Common.Value.String, Status);
return_ACPI_STATUS (Status);
}
}
}
/* Create and init the internal ACPI object */
ObjDesc = AcpiUtCreateInternalObject ((AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode))->ObjectType);
if (!ObjDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
Status = AcpiDsInitObjectFromOp (WalkState, Op, Op->Common.AmlOpcode, &ObjDesc);
if (ACPI_FAILURE (Status))
{
AcpiUtRemoveReference (ObjDesc);
return_ACPI_STATUS (Status);
}
*ObjDescPtr = ObjDesc;
return_ACPI_STATUS (AE_OK);
}
acpi_status
acpi_ds_build_internal_object (
struct acpi_walk_state *walk_state,
union acpi_parse_object *op,
union acpi_operand_object **obj_desc_ptr)
{
union acpi_operand_object *obj_desc;
acpi_status status;
ACPI_FUNCTION_TRACE ("ds_build_internal_object");
*obj_desc_ptr = NULL;
if (op->common.aml_opcode == AML_INT_NAMEPATH_OP) {
/*
* This is an named object reference. If this name was
* previously looked up in the namespace, it was stored in this op.
* Otherwise, go ahead and look it up now
*/
if (!op->common.node) {
status = acpi_ns_lookup (walk_state->scope_info, op->common.value.string,
ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, NULL,
(struct acpi_namespace_node **) &(op->common.node));
if (ACPI_FAILURE (status)) {
ACPI_REPORT_NSERROR (op->common.value.string, status);
return_ACPI_STATUS (status);
}
}
}
/* Create and init the internal ACPI object */
obj_desc = acpi_ut_create_internal_object ((acpi_ps_get_opcode_info (op->common.aml_opcode))->object_type);
if (!obj_desc) {
return_ACPI_STATUS (AE_NO_MEMORY);
}
status = acpi_ds_init_object_from_op (walk_state, op, op->common.aml_opcode, &obj_desc);
if (ACPI_FAILURE (status)) {
acpi_ut_remove_reference (obj_desc);
return_ACPI_STATUS (status);
}
*obj_desc_ptr = obj_desc;
return_ACPI_STATUS (AE_OK);
}
acpi_status
acpi_ps_get_next_namepath(struct acpi_walk_state *walk_state,
struct acpi_parse_state *parser_state,
union acpi_parse_object *arg, u8 method_call)
{
char *path;
union acpi_parse_object *name_op;
acpi_status status = AE_OK;
union acpi_operand_object *method_desc;
struct acpi_namespace_node *node;
union acpi_generic_state scope_info;
ACPI_FUNCTION_TRACE("ps_get_next_namepath");
path = acpi_ps_get_next_namestring(parser_state);
/* Null path case is allowed */
if (path) {
/*
* Lookup the name in the internal namespace
*/
scope_info.scope.node = NULL;
node = parser_state->start_node;
if (node) {
scope_info.scope.node = node;
}
/*
* Lookup object. We don't want to add anything new to the namespace
* here, however. So we use MODE_EXECUTE. Allow searching of the
* parent tree, but don't open a new scope -- we just want to lookup the
* object (MUST BE mode EXECUTE to perform upsearch)
*/
status = acpi_ns_lookup(&scope_info, path, ACPI_TYPE_ANY,
ACPI_IMODE_EXECUTE,
ACPI_NS_SEARCH_PARENT |
ACPI_NS_DONT_OPEN_SCOPE, NULL, &node);
if (ACPI_SUCCESS(status) && method_call) {
if (node->type == ACPI_TYPE_METHOD) {
/* This name is actually a control method invocation */
method_desc = acpi_ns_get_attached_object(node);
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"Control Method - %p Desc %p Path=%p\n",
node, method_desc, path));
name_op = acpi_ps_alloc_op(AML_INT_NAMEPATH_OP);
if (!name_op) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* Change arg into a METHOD CALL and attach name to it */
acpi_ps_init_op(arg, AML_INT_METHODCALL_OP);
name_op->common.value.name = path;
/* Point METHODCALL/NAME to the METHOD Node */
name_op->common.node = node;
acpi_ps_append_arg(arg, name_op);
if (!method_desc) {
ACPI_REPORT_ERROR(("ps_get_next_namepath: Control Method %p has no attached object\n", node));
return_ACPI_STATUS(AE_AML_INTERNAL);
}
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"Control Method - %p Args %X\n",
node,
method_desc->method.
param_count));
/* Get the number of arguments to expect */
walk_state->arg_count =
method_desc->method.param_count;
return_ACPI_STATUS(AE_OK);
}
/*
* Else this is normal named object reference.
* Just init the NAMEPATH object with the pathname.
* (See code below)
*/
}
if (ACPI_FAILURE(status)) {
/*
* 1) Any error other than NOT_FOUND is always severe
* 2) NOT_FOUND is only important if we are executing a method.
* 3) If executing a cond_ref_of opcode, NOT_FOUND is ok.
*/
if ((((walk_state->
parse_flags & ACPI_PARSE_MODE_MASK) ==
ACPI_PARSE_EXECUTE) && (status == AE_NOT_FOUND)
&& (walk_state->op->common.aml_opcode !=
AML_COND_REF_OF_OP))
|| (status != AE_NOT_FOUND)) {
ACPI_REPORT_NSERROR(path, status);
acpi_os_printf
("search_node %p start_node %p return_node %p\n",
scope_info.scope.node,
parser_state->start_node, node);
} else {
/*
* We got a NOT_FOUND during table load or we encountered
* a cond_ref_of(x) where the target does not exist.
* Either case is ok
*/
status = AE_OK;
}
}
}
/*
* Regardless of success/failure above,
* Just initialize the Op with the pathname.
*/
acpi_ps_init_op(arg, AML_INT_NAMEPATH_OP);
arg->common.value.name = path;
return_ACPI_STATUS(status);
}