182 lines
4.9 KiB
C
182 lines
4.9 KiB
C
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
|
|
/******************************************************************************
|
|
*
|
|
* Module Name: dswscope - Scope stack manipulation
|
|
*
|
|
* Copyright (C) 2000 - 2022, 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);
|
|
}
|