Orange Pi5 kernel

// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
 *
 * Module Name: dswscope - Scope stack manipulation
 *
 * Copyright (C) 2000 - 2020, Intel Corp.
 *
 *****************************************************************************/
 
#include <acpi/acpi.h>
#include "accommon.h"
#include "acdispat.h"
 
#define _COMPONENT          ACPI_DISPATCHER
ACPI_MODULE_NAME("dswscope")
 
/****************************************************************************
 *
 * FUNCTION:    acpi_ds_scope_stack_clear
 *
 * PARAMETERS:  walk_state      - Current state
 *
 * RETURN:      None
 *
 * DESCRIPTION: Pop (and free) everything on the scope stack except the
 *              root scope object (which remains at the stack top.)
 *
 ***************************************************************************/
void acpi_ds_scope_stack_clear(struct acpi_walk_state *walk_state)
{
<------>union acpi_generic_state *scope_info;
 
<------>ACPI_FUNCTION_NAME(ds_scope_stack_clear);
 
<------>while (walk_state->scope_info) {
 
<------><------>/* Pop a scope off the stack */
 
<------><------>scope_info = walk_state->scope_info;
<------><------>walk_state->scope_info = scope_info->scope.next;
 
<------><------>ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
<------><------><------><------>  "Popped object type (%s)\n",
<------><------><------><------>  acpi_ut_get_type_name(scope_info->common.
<------><------><------><------><------><------><------>value)));
 
<------><------>acpi_ut_delete_generic_state(scope_info);
<------>}
}
 
/****************************************************************************
 *
 * FUNCTION:    acpi_ds_scope_stack_push
 *
 * PARAMETERS:  node            - Name to be made current
 *              type            - Type of frame being pushed
 *              walk_state      - Current state
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Push the current scope on the scope stack, and make the
 *              passed Node current.
 *
 ***************************************************************************/
 
acpi_status
acpi_ds_scope_stack_push(struct acpi_namespace_node *node,
<------><------><------> acpi_object_type type,
<------><------><------> struct acpi_walk_state *walk_state)
{
<------>union acpi_generic_state *scope_info;
<------>union acpi_generic_state *old_scope_info;
 
<------>ACPI_FUNCTION_TRACE(ds_scope_stack_push);
 
<------>if (!node) {
 
<------><------>/* Invalid scope   */
 
<------><------>ACPI_ERROR((AE_INFO, "Null scope parameter"));
<------><------>return_ACPI_STATUS(AE_BAD_PARAMETER);
<------>}
 
<------>/* Make sure object type is valid */
 
<------>if (!acpi_ut_valid_object_type(type)) {
<------><------>ACPI_WARNING((AE_INFO, "Invalid object type: 0x%X", type));
<------>}
 
<------>/* Allocate a new scope object */
 
<------>scope_info = acpi_ut_create_generic_state();
<------>if (!scope_info) {
<------><------>return_ACPI_STATUS(AE_NO_MEMORY);
<------>}
 
<------>/* Init new scope object */
 
<------>scope_info->common.descriptor_type = ACPI_DESC_TYPE_STATE_WSCOPE;
<------>scope_info->scope.node = node;
<------>scope_info->common.value = (u16) type;
 
<------>walk_state->scope_depth++;
 
<------>ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
<------><------><------>  "[%.2d] Pushed scope ",
<------><------><------>  (u32) walk_state->scope_depth));
 
<------>old_scope_info = walk_state->scope_info;
<------>if (old_scope_info) {
<------><------>ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC,
<------><------><------><------>      "[%4.4s] (%s)",
<------><------><------><------>      acpi_ut_get_node_name(old_scope_info->
<------><------><------><------><------><------><------>    scope.node),
<------><------><------><------>      acpi_ut_get_type_name(old_scope_info->
<------><------><------><------><------><------><------>    common.value)));
<------>} else {
<------><------>ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, ACPI_NAMESPACE_ROOT));
<------>}
 
<------>ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC,
<------><------><------>      ", New scope -> [%4.4s] (%s)\n",
<------><------><------>      acpi_ut_get_node_name(scope_info->scope.node),
<------><------><------>      acpi_ut_get_type_name(scope_info->common.value)));
 
<------>/* Push new scope object onto stack */
 
<------>acpi_ut_push_generic_state(&walk_state->scope_info, scope_info);
<------>return_ACPI_STATUS(AE_OK);
}
 
/****************************************************************************
 *
 * FUNCTION:    acpi_ds_scope_stack_pop
 *
 * PARAMETERS:  walk_state      - Current state
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Pop the scope stack once.
 *
 ***************************************************************************/
 
acpi_status acpi_ds_scope_stack_pop(struct acpi_walk_state *walk_state)
{
<------>union acpi_generic_state *scope_info;
<------>union acpi_generic_state *new_scope_info;
 
<------>ACPI_FUNCTION_TRACE(ds_scope_stack_pop);
 
<------>/*
<------> * Pop scope info object off the stack.
<------> */
<------>scope_info = acpi_ut_pop_generic_state(&walk_state->scope_info);
<------>if (!scope_info) {
<------><------>return_ACPI_STATUS(AE_STACK_UNDERFLOW);
<------>}
 
<------>walk_state->scope_depth--;
 
<------>ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
<------><------><------>  "[%.2d] Popped scope [%4.4s] (%s), New scope -> ",
<------><------><------>  (u32) walk_state->scope_depth,
<------><------><------>  acpi_ut_get_node_name(scope_info->scope.node),
<------><------><------>  acpi_ut_get_type_name(scope_info->common.value)));
 
<------>new_scope_info = walk_state->scope_info;
<------>if (new_scope_info) {
<------><------>ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, "[%4.4s] (%s)\n",
<------><------><------><------>      acpi_ut_get_node_name(new_scope_info->
<------><------><------><------><------><------><------>    scope.node),
<------><------><------><------>      acpi_ut_get_type_name(new_scope_info->
<------><------><------><------><------><------><------>    common.value)));
<------>} else {
<------><------>ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, "%s\n",
<------><------><------><------>      ACPI_NAMESPACE_ROOT));
<------>}
 
<------>acpi_ut_delete_generic_state(scope_info);
<------>return_ACPI_STATUS(AE_OK);
}