0,0 → 1,214 |
/****************************************************************************** |
* |
* Module Name: dswscope - Scope stack manipulation |
* |
*****************************************************************************/ |
|
/* |
* Copyright (C) 2000 - 2015, Intel Corp. |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* 1. Redistributions of source code must retain the above copyright |
* notice, this list of conditions, and the following disclaimer, |
* without modification. |
* 2. Redistributions in binary form must reproduce at minimum a disclaimer |
* substantially similar to the "NO WARRANTY" disclaimer below |
* ("Disclaimer") and any redistribution must be conditioned upon |
* including a substantially similar Disclaimer requirement for further |
* binary redistribution. |
* 3. Neither the names of the above-listed copyright holders nor the names |
* of any contributors may be used to endorse or promote products derived |
* from this software without specific prior written permission. |
* |
* Alternatively, this software may be distributed under the terms of the |
* GNU General Public License ("GPL") version 2 as published by the Free |
* Software Foundation. |
* |
* NO WARRANTY |
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
* POSSIBILITY OF SUCH DAMAGES. |
*/ |
|
#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, "[\\___] (%s)", "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, "[\\___] (ROOT)\n")); |
} |
|
acpi_ut_delete_generic_state(scope_info); |
return_ACPI_STATUS(AE_OK); |
} |