Orange Pi5 kernel

// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
 *
 * Module Name: dswload2 - Dispatcher second pass namespace load callbacks
 *
 * Copyright (C) 2000 - 2020, Intel Corp.
 *
 *****************************************************************************/
 
#include <acpi/acpi.h>
#include "accommon.h"
#include "acparser.h"
#include "amlcode.h"
#include "acdispat.h"
#include "acinterp.h"
#include "acnamesp.h"
#include "acevents.h"
#ifdef ACPI_EXEC_APP
#include "aecommon.h"
#endif
 
#define _COMPONENT          ACPI_DISPATCHER
ACPI_MODULE_NAME("dswload2")
 
/*******************************************************************************
 *
 * FUNCTION:    acpi_ds_load2_begin_op
 *
 * PARAMETERS:  walk_state      - Current state of the parse tree walk
 *              out_op          - Where to return op if a new one is created
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Descending callback used during the loading of ACPI tables.
 *
 ******************************************************************************/
acpi_status
acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
<------><------>       union acpi_parse_object **out_op)
{
<------>union acpi_parse_object *op;
<------>struct acpi_namespace_node *node;
<------>acpi_status status;
<------>acpi_object_type object_type;
<------>char *buffer_ptr;
<------>u32 flags;
 
<------>ACPI_FUNCTION_TRACE(ds_load2_begin_op);
 
<------>op = walk_state->op;
<------>ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op,
<------><------><------>  walk_state));
 
<------>if (op) {
<------><------>if ((walk_state->control_state) &&
<------><------>    (walk_state->control_state->common.state ==
<------><------>     ACPI_CONTROL_CONDITIONAL_EXECUTING)) {
 
<------><------><------>/* We are executing a while loop outside of a method */
 
<------><------><------>status = acpi_ds_exec_begin_op(walk_state, out_op);
<------><------><------>return_ACPI_STATUS(status);
<------><------>}
 
<------><------>/* We only care about Namespace opcodes here */
 
<------><------>if ((!(walk_state->op_info->flags & AML_NSOPCODE) &&
<------><------>     (walk_state->opcode != AML_INT_NAMEPATH_OP)) ||
<------><------>    (!(walk_state->op_info->flags & AML_NAMED))) {
<------><------><------>return_ACPI_STATUS(AE_OK);
<------><------>}
 
<------><------>/* Get the name we are going to enter or lookup in the namespace */
 
<------><------>if (walk_state->opcode == AML_INT_NAMEPATH_OP) {
 
<------><------><------>/* For Namepath op, get the path string */
 
<------><------><------>buffer_ptr = op->common.value.string;
<------><------><------>if (!buffer_ptr) {
 
<------><------><------><------>/* No name, just exit */
 
<------><------><------><------>return_ACPI_STATUS(AE_OK);
<------><------><------>}
<------><------>} else {
<------><------><------>/* Get name from the op */
 
<------><------><------>buffer_ptr = ACPI_CAST_PTR(char, &op->named.name);
<------><------>}
<------>} else {
<------><------>/* Get the namestring from the raw AML */
 
<------><------>buffer_ptr =
<------><------>    acpi_ps_get_next_namestring(&walk_state->parser_state);
<------>}
 
<------>/* Map the opcode into an internal object type */
 
<------>object_type = walk_state->op_info->object_type;
 
<------>ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
<------><------><------>  "State=%p Op=%p Type=%X\n", walk_state, op,
<------><------><------>  object_type));
 
<------>switch (walk_state->opcode) {
<------>case AML_FIELD_OP:
<------>case AML_BANK_FIELD_OP:
<------>case AML_INDEX_FIELD_OP:
 
<------><------>node = NULL;
<------><------>status = AE_OK;
<------><------>break;
 
<------>case AML_INT_NAMEPATH_OP:
<------><------>/*
<------><------> * The name_path is an object reference to an existing object.
<------><------> * Don't enter the name into the namespace, but look it up
<------><------> * for use later.
<------><------> */
<------><------>status =
<------><------>    acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
<------><------><------><------>   object_type, ACPI_IMODE_EXECUTE,
<------><------><------><------>   ACPI_NS_SEARCH_PARENT, walk_state, &(node));
<------><------>break;
 
<------>case AML_SCOPE_OP:
 
<------><------>/* Special case for Scope(\) -> refers to the Root node */
 
<------><------>if (op && (op->named.node == acpi_gbl_root_node)) {
<------><------><------>node = op->named.node;
 
<------><------><------>status =
<------><------><------>    acpi_ds_scope_stack_push(node, object_type,
<------><------><------><------><------><------>     walk_state);
<------><------><------>if (ACPI_FAILURE(status)) {
<------><------><------><------>return_ACPI_STATUS(status);
<------><------><------>}
<------><------>} else {
<------><------><------>/*
<------><------><------> * The Path is an object reference to an existing object.
<------><------><------> * Don't enter the name into the namespace, but look it up
<------><------><------> * for use later.
<------><------><------> */
<------><------><------>status =
<------><------><------>    acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
<------><------><------><------><------>   object_type, ACPI_IMODE_EXECUTE,
<------><------><------><------><------>   ACPI_NS_SEARCH_PARENT, walk_state,
<------><------><------><------><------>   &(node));
<------><------><------>if (ACPI_FAILURE(status)) {
#ifdef ACPI_ASL_COMPILER
<------><------><------><------>if (status == AE_NOT_FOUND) {
<------><------><------><------><------>status = AE_OK;
<------><------><------><------>} else {
<------><------><------><------><------>ACPI_ERROR_NAMESPACE(walk_state->
<------><------><------><------><------><------><------>     scope_info,
<------><------><------><------><------><------><------>     buffer_ptr,
<------><------><------><------><------><------><------>     status);
<------><------><------><------>}
#else
<------><------><------><------>ACPI_ERROR_NAMESPACE(walk_state->scope_info,
<------><------><------><------><------><------>     buffer_ptr, status);
#endif
<------><------><------><------>return_ACPI_STATUS(status);
<------><------><------>}
<------><------>}
 
<------><------>/*
<------><------> * We must check to make sure that the target is
<------><------> * one of the opcodes that actually opens a scope
<------><------> */
<------><------>switch (node->type) {
<------><------>case ACPI_TYPE_ANY:
<------><------>case ACPI_TYPE_LOCAL_SCOPE:	/* Scope */
<------><------>case ACPI_TYPE_DEVICE:
<------><------>case ACPI_TYPE_POWER:
<------><------>case ACPI_TYPE_PROCESSOR:
<------><------>case ACPI_TYPE_THERMAL:
 
<------><------><------>/* These are acceptable types */
<------><------><------>break;
 
<------><------>case ACPI_TYPE_INTEGER:
<------><------>case ACPI_TYPE_STRING:
<------><------>case ACPI_TYPE_BUFFER:
 
<------><------><------>/*
<------><------><------> * These types we will allow, but we will change the type.
<------><------><------> * This enables some existing code of the form:
<------><------><------> *
<------><------><------> *  Name (DEB, 0)
<------><------><------> *  Scope (DEB) { ... }
<------><------><------> */
<------><------><------>ACPI_WARNING((AE_INFO,
<------><------><------><------>      "Type override - [%4.4s] had invalid type (%s) "
<------><------><------><------>      "for Scope operator, changed to type ANY",
<------><------><------><------>      acpi_ut_get_node_name(node),
<------><------><------><------>      acpi_ut_get_type_name(node->type)));
 
<------><------><------>node->type = ACPI_TYPE_ANY;
<------><------><------>walk_state->scope_info->common.value = ACPI_TYPE_ANY;
<------><------><------>break;
 
<------><------>case ACPI_TYPE_METHOD:
 
<------><------><------>/*
<------><------><------> * Allow scope change to root during execution of module-level
<------><------><------> * code. Root is typed METHOD during this time.
<------><------><------> */
<------><------><------>if ((node == acpi_gbl_root_node) &&
<------><------><------>    (walk_state->
<------><------><------>     parse_flags & ACPI_PARSE_MODULE_LEVEL)) {
<------><------><------><------>break;
<------><------><------>}
 
<------><------><------>/*lint -fallthrough */
 
<------><------>default:
 
<------><------><------>/* All other types are an error */
 
<------><------><------>ACPI_ERROR((AE_INFO,
<------><------><------><------>    "Invalid type (%s) for target of "
<------><------><------><------>    "Scope operator [%4.4s] (Cannot override)",
<------><------><------><------>    acpi_ut_get_type_name(node->type),
<------><------><------><------>    acpi_ut_get_node_name(node)));
 
<------><------><------>return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
<------><------>}
<------><------>break;
 
<------>default:
 
<------><------>/* All other opcodes */
 
<------><------>if (op && op->common.node) {
 
<------><------><------>/* This op/node was previously entered into the namespace */
 
<------><------><------>node = op->common.node;
 
<------><------><------>if (acpi_ns_opens_scope(object_type)) {
<------><------><------><------>status =
<------><------><------><------>    acpi_ds_scope_stack_push(node, object_type,
<------><------><------><------><------><------><------>     walk_state);
<------><------><------><------>if (ACPI_FAILURE(status)) {
<------><------><------><------><------>return_ACPI_STATUS(status);
<------><------><------><------>}
<------><------><------>}
 
<------><------><------>return_ACPI_STATUS(AE_OK);
<------><------>}
 
<------><------>/*
<------><------> * Enter the named type into the internal namespace. We enter the name
<------><------> * as we go downward in the parse tree. Any necessary subobjects that
<------><------> * involve arguments to the opcode must be created as we go back up the
<------><------> * parse tree later.
<------><------> *
<------><------> * Note: Name may already exist if we are executing a deferred opcode.
<------><------> */
<------><------>if (walk_state->deferred_node) {
 
<------><------><------>/* This name is already in the namespace, get the node */
 
<------><------><------>node = walk_state->deferred_node;
<------><------><------>status = AE_OK;
<------><------><------>break;
<------><------>}
 
<------><------>flags = ACPI_NS_NO_UPSEARCH;
<------><------>if (walk_state->pass_number == ACPI_IMODE_EXECUTE) {
 
<------><------><------>/* Execution mode, node cannot already exist, node is temporary */
 
<------><------><------>flags |= ACPI_NS_ERROR_IF_FOUND;
 
<------><------><------>if (!
<------><------><------>    (walk_state->
<------><------><------>     parse_flags & ACPI_PARSE_MODULE_LEVEL)) {
<------><------><------><------>flags |= ACPI_NS_TEMPORARY;
<------><------><------>}
<------><------>}
#ifdef ACPI_ASL_COMPILER
 
<------><------>/*
<------><------> * Do not open a scope for AML_EXTERNAL_OP
<------><------> * acpi_ns_lookup can open a new scope based on the object type
<------><------> * of this op. AML_EXTERNAL_OP is a declaration rather than a
<------><------> * definition. In the case that this external is a method object,
<------><------> * acpi_ns_lookup will open a new scope. However, an AML_EXTERNAL_OP
<------><------> * associated with the ACPI_TYPE_METHOD is a declaration, rather than
<------><------> * a definition. Flags is set to avoid opening a scope for any
<------><------> * AML_EXTERNAL_OP.
<------><------> */
<------><------>if (walk_state->opcode == AML_EXTERNAL_OP) {
<------><------><------>flags |= ACPI_NS_DONT_OPEN_SCOPE;
<------><------>}
#endif
 
<------><------>/*
<------><------> * For name creation opcodes, the full namepath prefix must
<------><------> * exist, except for the final (new) nameseg.
<------><------> */
<------><------>if (walk_state->op_info->flags & AML_NAMED) {
<------><------><------>flags |= ACPI_NS_PREFIX_MUST_EXIST;
<------><------>}
 
<------><------>/* Add new entry or lookup existing entry */
 
<------><------>status =
<------><------>    acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
<------><------><------><------>   object_type, ACPI_IMODE_LOAD_PASS2, flags,
<------><------><------><------>   walk_state, &node);
 
<------><------>if (ACPI_SUCCESS(status) && (flags & ACPI_NS_TEMPORARY)) {
<------><------><------>ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
<------><------><------><------><------>  "***New Node [%4.4s] %p is temporary\n",
<------><------><------><------><------>  acpi_ut_get_node_name(node), node));
<------><------>}
<------><------>break;
<------>}
 
<------>if (ACPI_FAILURE(status)) {
<------><------>ACPI_ERROR_NAMESPACE(walk_state->scope_info,
<------><------><------><------>     buffer_ptr, status);
<------><------>return_ACPI_STATUS(status);
<------>}
 
<------>if (!op) {
 
<------><------>/* Create a new op */
 
<------><------>op = acpi_ps_alloc_op(walk_state->opcode, walk_state->aml);
<------><------>if (!op) {
<------><------><------>return_ACPI_STATUS(AE_NO_MEMORY);
<------><------>}
 
<------><------>/* Initialize the new op */
 
<------><------>if (node) {
<------><------><------>op->named.name = node->name.integer;
<------><------>}
<------><------>*out_op = op;
<------>}
 
<------>/*
<------> * Put the Node in the "op" object that the parser uses, so we
<------> * can get it again quickly when this scope is closed
<------> */
<------>op->common.node = node;
<------>return_ACPI_STATUS(status);
}
 
/*******************************************************************************
 *
 * FUNCTION:    acpi_ds_load2_end_op
 *
 * PARAMETERS:  walk_state      - Current state of the parse tree walk
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Ascending callback used during the loading of the namespace,
 *              both control methods and everything else.
 *
 ******************************************************************************/
 
acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state)
{
<------>union acpi_parse_object *op;
<------>acpi_status status = AE_OK;
<------>acpi_object_type object_type;
<------>struct acpi_namespace_node *node;
<------>union acpi_parse_object *arg;
<------>struct acpi_namespace_node *new_node;
<------>u32 i;
<------>u8 region_space;
#ifdef ACPI_EXEC_APP
<------>union acpi_operand_object *obj_desc;
<------>char *namepath;
#endif
 
<------>ACPI_FUNCTION_TRACE(ds_load2_end_op);
 
<------>op = walk_state->op;
<------>ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n",
<------><------><------>  walk_state->op_info->name, op, walk_state));
 
<------>/* Check if opcode had an associated namespace object */
 
<------>if (!(walk_state->op_info->flags & AML_NSOBJECT)) {
<------><------>return_ACPI_STATUS(AE_OK);
<------>}
 
<------>if (op->common.aml_opcode == AML_SCOPE_OP) {
<------><------>ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
<------><------><------><------>  "Ending scope Op=%p State=%p\n", op,
<------><------><------><------>  walk_state));
<------>}
 
<------>object_type = walk_state->op_info->object_type;
 
<------>/*
<------> * Get the Node/name from the earlier lookup
<------> * (It was saved in the *op structure)
<------> */
<------>node = op->common.node;
 
<------>/*
<------> * Put the Node on the object stack (Contains the ACPI Name of
<------> * this object)
<------> */
<------>walk_state->operands[0] = (void *)node;
<------>walk_state->num_operands = 1;
 
<------>/* Pop the scope stack */
 
<------>if (acpi_ns_opens_scope(object_type) &&
<------>    (op->common.aml_opcode != AML_INT_METHODCALL_OP)) {
<------><------>ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
<------><------><------><------>  "(%s) Popping scope for Op %p\n",
<------><------><------><------>  acpi_ut_get_type_name(object_type), op));
 
<------><------>status = acpi_ds_scope_stack_pop(walk_state);
<------><------>if (ACPI_FAILURE(status)) {
<------><------><------>goto cleanup;
<------><------>}
<------>}
 
<------>/*
<------> * Named operations are as follows:
<------> *
<------> * AML_ALIAS
<------> * AML_BANKFIELD
<------> * AML_CREATEBITFIELD
<------> * AML_CREATEBYTEFIELD
<------> * AML_CREATEDWORDFIELD
<------> * AML_CREATEFIELD
<------> * AML_CREATEQWORDFIELD
<------> * AML_CREATEWORDFIELD
<------> * AML_DATA_REGION
<------> * AML_DEVICE
<------> * AML_EVENT
<------> * AML_FIELD
<------> * AML_INDEXFIELD
<------> * AML_METHOD
<------> * AML_METHODCALL
<------> * AML_MUTEX
<------> * AML_NAME
<------> * AML_NAMEDFIELD
<------> * AML_OPREGION
<------> * AML_POWERRES
<------> * AML_PROCESSOR
<------> * AML_SCOPE
<------> * AML_THERMALZONE
<------> */
 
<------>ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
<------><------><------>  "Create-Load [%s] State=%p Op=%p NamedObj=%p\n",
<------><------><------>  acpi_ps_get_opcode_name(op->common.aml_opcode),
<------><------><------>  walk_state, op, node));
 
<------>/* Decode the opcode */
 
<------>arg = op->common.value.arg;
 
<------>switch (walk_state->op_info->type) {
 
<------>case AML_TYPE_CREATE_FIELD:
<------><------>/*
<------><------> * Create the field object, but the field buffer and index must
<------><------> * be evaluated later during the execution phase
<------><------> */
<------><------>status = acpi_ds_create_buffer_field(op, walk_state);
<------><------>if (ACPI_FAILURE(status)) {
<------><------><------>ACPI_EXCEPTION((AE_INFO, status,
<------><------><------><------><------>"CreateBufferField failure"));
<------><------><------>goto cleanup;
<------><------><------>}
<------><------>break;
 
<------>case AML_TYPE_NAMED_FIELD:
<------><------>/*
<------><------> * If we are executing a method, initialize the field
<------><------> */
<------><------>if (walk_state->method_node) {
<------><------><------>status = acpi_ds_init_field_objects(op, walk_state);
<------><------>}
 
<------><------>switch (op->common.aml_opcode) {
<------><------>case AML_INDEX_FIELD_OP:
 
<------><------><------>status =
<------><------><------>    acpi_ds_create_index_field(op,
<------><------><------><------><------><------>       (acpi_handle)arg->common.
<------><------><------><------><------><------>       node, walk_state);
<------><------><------>break;
 
<------><------>case AML_BANK_FIELD_OP:
 
<------><------><------>status =
<------><------><------>    acpi_ds_create_bank_field(op, arg->common.node,
<------><------><------><------><------><------>      walk_state);
<------><------><------>break;
 
<------><------>case AML_FIELD_OP:
 
<------><------><------>status =
<------><------><------>    acpi_ds_create_field(op, arg->common.node,
<------><------><------><------><------><------> walk_state);
<------><------><------>break;
 
<------><------>default:
 
<------><------><------>/* All NAMED_FIELD opcodes must be handled above */
<------><------><------>break;
<------><------>}
<------><------>break;
 
<------>case AML_TYPE_NAMED_SIMPLE:
 
<------><------>status = acpi_ds_create_operands(walk_state, arg);
<------><------>if (ACPI_FAILURE(status)) {
<------><------><------>goto cleanup;
<------><------>}
 
<------><------>switch (op->common.aml_opcode) {
<------><------>case AML_PROCESSOR_OP:
 
<------><------><------>status = acpi_ex_create_processor(walk_state);
<------><------><------>break;
 
<------><------>case AML_POWER_RESOURCE_OP:
 
<------><------><------>status = acpi_ex_create_power_resource(walk_state);
<------><------><------>break;
 
<------><------>case AML_MUTEX_OP:
 
<------><------><------>status = acpi_ex_create_mutex(walk_state);
<------><------><------>break;
 
<------><------>case AML_EVENT_OP:
 
<------><------><------>status = acpi_ex_create_event(walk_state);
<------><------><------>break;
 
<------><------>case AML_ALIAS_OP:
 
<------><------><------>status = acpi_ex_create_alias(walk_state);
<------><------><------>break;
 
<------><------>default:
 
<------><------><------>/* Unknown opcode */
 
<------><------><------>status = AE_OK;
<------><------><------>goto cleanup;
<------><------>}
 
<------><------>/* Delete operands */
 
<------><------>for (i = 1; i < walk_state->num_operands; i++) {
<------><------><------>acpi_ut_remove_reference(walk_state->operands[i]);
<------><------><------>walk_state->operands[i] = NULL;
<------><------>}
 
<------><------>break;
 
<------>case AML_TYPE_NAMED_COMPLEX:
 
<------><------>switch (op->common.aml_opcode) {
<------><------>case AML_REGION_OP:
<------><------>case AML_DATA_REGION_OP:
 
<------><------><------>if (op->common.aml_opcode == AML_REGION_OP) {
<------><------><------><------>region_space = (acpi_adr_space_type)
<------><------><------><------>    ((op->common.value.arg)->common.value.
<------><------><------><------>     integer);
<------><------><------>} else {
<------><------><------><------>region_space = ACPI_ADR_SPACE_DATA_TABLE;
<------><------><------>}
 
<------><------><------>/*
<------><------><------> * The op_region is not fully parsed at this time. The only valid
<------><------><------> * argument is the space_id. (We must save the address of the
<------><------><------> * AML of the address and length operands)
<------><------><------> *
<------><------><------> * If we have a valid region, initialize it. The namespace is
<------><------><------> * unlocked at this point.
<------><------><------> *
<------><------><------> * Need to unlock interpreter if it is locked (if we are running
<------><------><------> * a control method), in order to allow _REG methods to be run
<------><------><------> * during acpi_ev_initialize_region.
<------><------><------> */
<------><------><------>if (walk_state->method_node) {
<------><------><------><------>/*
<------><------><------><------> * Executing a method: initialize the region and unlock
<------><------><------><------> * the interpreter
<------><------><------><------> */
<------><------><------><------>status = acpi_ex_create_region(op->named.data,
<------><------><------><------><------><------><------>       op->named.length,
<------><------><------><------><------><------><------>       region_space,
<------><------><------><------><------><------><------>       walk_state);
<------><------><------><------>if (ACPI_FAILURE(status)) {
<------><------><------><------><------>return_ACPI_STATUS(status);
<------><------><------><------>}
<------><------><------>}
 
<------><------><------>status =
<------><------><------>    acpi_ev_initialize_region
<------><------><------>    (acpi_ns_get_attached_object(node));
<------><------><------>break;
 
<------><------>case AML_NAME_OP:
 
<------><------><------>status = acpi_ds_create_node(walk_state, node, op);
<------><------><------>if (ACPI_FAILURE(status)) {
<------><------><------><------>goto cleanup;
<------><------><------>}
#ifdef ACPI_EXEC_APP
<------><------><------>/*
<------><------><------> * acpi_exec support for namespace initialization file (initialize
<------><------><------> * Name opcodes in this code.)
<------><------><------> */
<------><------><------>namepath = acpi_ns_get_external_pathname(node);
<------><------><------>status = ae_lookup_init_file_entry(namepath, &obj_desc);
<------><------><------>if (ACPI_SUCCESS(status)) {
 
<------><------><------><------>/* Detach any existing object, attach new object */
 
<------><------><------><------>if (node->object) {
<------><------><------><------><------>acpi_ns_detach_object(node);
<------><------><------><------>}
<------><------><------><------>acpi_ns_attach_object(node, obj_desc,
<------><------><------><------><------><------>      obj_desc->common.type);
<------><------><------>}
<------><------><------>ACPI_FREE(namepath);
<------><------><------>status = AE_OK;
#endif
<------><------><------>break;
 
<------><------>case AML_METHOD_OP:
<------><------><------>/*
<------><------><------> * method_op pkg_length name_string method_flags term_list
<------><------><------> *
<------><------><------> * Note: We must create the method node/object pair as soon as we
<------><------><------> * see the method declaration. This allows later pass1 parsing
<------><------><------> * of invocations of the method (need to know the number of
<------><------><------> * arguments.)
<------><------><------> */
<------><------><------>ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
<------><------><------><------><------>  "LOADING-Method: State=%p Op=%p NamedObj=%p\n",
<------><------><------><------><------>  walk_state, op, op->named.node));
 
<------><------><------>if (!acpi_ns_get_attached_object(op->named.node)) {
<------><------><------><------>walk_state->operands[0] =
<------><------><------><------>    ACPI_CAST_PTR(void, op->named.node);
<------><------><------><------>walk_state->num_operands = 1;
 
<------><------><------><------>status =
<------><------><------><------>    acpi_ds_create_operands(walk_state,
<------><------><------><------><------><------><------>    op->common.value.
<------><------><------><------><------><------><------>    arg);
<------><------><------><------>if (ACPI_SUCCESS(status)) {
<------><------><------><------><------>status =
<------><------><------><------><------>    acpi_ex_create_method(op->named.
<------><------><------><------><------><------><------><------>  data,
<------><------><------><------><------><------><------><------>  op->named.
<------><------><------><------><------><------><------><------>  length,
<------><------><------><------><------><------><------><------>  walk_state);
<------><------><------><------>}
 
<------><------><------><------>walk_state->operands[0] = NULL;
<------><------><------><------>walk_state->num_operands = 0;
 
<------><------><------><------>if (ACPI_FAILURE(status)) {
<------><------><------><------><------>return_ACPI_STATUS(status);
<------><------><------><------>}
<------><------><------>}
<------><------><------>break;
 
<------><------>default:
 
<------><------><------>/* All NAMED_COMPLEX opcodes must be handled above */
<------><------><------>break;
<------><------>}
<------><------>break;
 
<------>case AML_CLASS_INTERNAL:
 
<------><------>/* case AML_INT_NAMEPATH_OP: */
<------><------>break;
 
<------>case AML_CLASS_METHOD_CALL:
 
<------><------>ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
<------><------><------><------>  "RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n",
<------><------><------><------>  walk_state, op, node));
 
<------><------>/*
<------><------> * Lookup the method name and save the Node
<------><------> */
<------><------>status =
<------><------>    acpi_ns_lookup(walk_state->scope_info,
<------><------><------><------>   arg->common.value.string, ACPI_TYPE_ANY,
<------><------><------><------>   ACPI_IMODE_LOAD_PASS2,
<------><------><------><------>   ACPI_NS_SEARCH_PARENT |
<------><------><------><------>   ACPI_NS_DONT_OPEN_SCOPE, walk_state,
<------><------><------><------>   &(new_node));
<------><------>if (ACPI_SUCCESS(status)) {
<------><------><------>/*
<------><------><------> * Make sure that what we found is indeed a method
<------><------><------> * We didn't search for a method on purpose, to see if the name
<------><------><------> * would resolve
<------><------><------> */
<------><------><------>if (new_node->type != ACPI_TYPE_METHOD) {
<------><------><------><------>status = AE_AML_OPERAND_TYPE;
<------><------><------>}
 
<------><------><------>/* We could put the returned object (Node) on the object stack for
<------><------><------> * later, but for now, we will put it in the "op" object that the
<------><------><------> * parser uses, so we can get it again at the end of this scope
<------><------><------> */
<------><------><------>op->common.node = new_node;
<------><------>} else {
<------><------><------>ACPI_ERROR_NAMESPACE(walk_state->scope_info,
<------><------><------><------><------>     arg->common.value.string, status);
<------><------>}
<------><------>break;
 
<------>default:
 
<------><------>break;
<------>}
 
cleanup:
 
<------>/* Remove the Node pushed at the very beginning */
 
<------>walk_state->operands[0] = NULL;
<------>walk_state->num_operands = 0;
<------>return_ACPI_STATUS(status);
}