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linux/drivers/acpi/acpica/dbobject.c

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/*******************************************************************************
*
* Module Name: dbobject - ACPI object decode and display
*
******************************************************************************/
/*
* Copyright (C) 2000 - 2016, 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 "acnamesp.h"
#include "acdebug.h"
#define _COMPONENT ACPI_CA_DEBUGGER
ACPI_MODULE_NAME("dbobject")
/* Local prototypes */
static void acpi_db_decode_node(struct acpi_namespace_node *node);
/*******************************************************************************
*
* FUNCTION: acpi_db_dump_method_info
*
* PARAMETERS: status - Method execution status
* walk_state - Current state of the parse tree walk
*
* RETURN: None
*
* DESCRIPTION: Called when a method has been aborted because of an error.
* Dumps the method execution stack, and the method locals/args,
* and disassembles the AML opcode that failed.
*
******************************************************************************/
void
acpi_db_dump_method_info(acpi_status status, struct acpi_walk_state *walk_state)
{
struct acpi_thread_state *thread;
/* Ignore control codes, they are not errors */
if ((status & AE_CODE_MASK) == AE_CODE_CONTROL) {
return;
}
/* We may be executing a deferred opcode */
if (walk_state->deferred_node) {
acpi_os_printf("Executing subtree for Buffer/Package/Region\n");
return;
}
/*
* If there is no Thread, we are not actually executing a method.
* This can happen when the iASL compiler calls the interpreter
* to perform constant folding.
*/
thread = walk_state->thread;
if (!thread) {
return;
}
/* Display the method locals and arguments */
acpi_os_printf("\n");
acpi_db_decode_locals(walk_state);
acpi_os_printf("\n");
acpi_db_decode_arguments(walk_state);
acpi_os_printf("\n");
}
/*******************************************************************************
*
* FUNCTION: acpi_db_decode_internal_object
*
* PARAMETERS: obj_desc - Object to be displayed
*
* RETURN: None
*
* DESCRIPTION: Short display of an internal object. Numbers/Strings/Buffers.
*
******************************************************************************/
void acpi_db_decode_internal_object(union acpi_operand_object *obj_desc)
{
u32 i;
if (!obj_desc) {
acpi_os_printf(" Uninitialized");
return;
}
if (ACPI_GET_DESCRIPTOR_TYPE(obj_desc) != ACPI_DESC_TYPE_OPERAND) {
acpi_os_printf(" %p [%s]", obj_desc,
acpi_ut_get_descriptor_name(obj_desc));
return;
}
acpi_os_printf(" %s", acpi_ut_get_object_type_name(obj_desc));
switch (obj_desc->common.type) {
case ACPI_TYPE_INTEGER:
acpi_os_printf(" %8.8X%8.8X",
ACPI_FORMAT_UINT64(obj_desc->integer.value));
break;
case ACPI_TYPE_STRING:
acpi_os_printf("(%u) \"%.60s",
obj_desc->string.length,
obj_desc->string.pointer);
if (obj_desc->string.length > 60) {
acpi_os_printf("...");
} else {
acpi_os_printf("\"");
}
break;
case ACPI_TYPE_BUFFER:
acpi_os_printf("(%u)", obj_desc->buffer.length);
for (i = 0; (i < 8) && (i < obj_desc->buffer.length); i++) {
acpi_os_printf(" %2.2X", obj_desc->buffer.pointer[i]);
}
break;
default:
acpi_os_printf(" %p", obj_desc);
break;
}
}
/*******************************************************************************
*
* FUNCTION: acpi_db_decode_node
*
* PARAMETERS: node - Object to be displayed
*
* RETURN: None
*
* DESCRIPTION: Short display of a namespace node
*
******************************************************************************/
static void acpi_db_decode_node(struct acpi_namespace_node *node)
{
acpi_os_printf("<Node> Name %4.4s",
acpi_ut_get_node_name(node));
if (node->flags & ANOBJ_METHOD_ARG) {
acpi_os_printf(" [Method Arg]");
}
if (node->flags & ANOBJ_METHOD_LOCAL) {
acpi_os_printf(" [Method Local]");
}
switch (node->type) {
/* These types have no attached object */
case ACPI_TYPE_DEVICE:
acpi_os_printf(" Device");
break;
case ACPI_TYPE_THERMAL:
acpi_os_printf(" Thermal Zone");
break;
default:
acpi_db_decode_internal_object(acpi_ns_get_attached_object
(node));
break;
}
}
/*******************************************************************************
*
* FUNCTION: acpi_db_display_internal_object
*
* PARAMETERS: obj_desc - Object to be displayed
* walk_state - Current walk state
*
* RETURN: None
*
* DESCRIPTION: Short display of an internal object
*
******************************************************************************/
void
acpi_db_display_internal_object(union acpi_operand_object *obj_desc,
struct acpi_walk_state *walk_state)
{
u8 type;
acpi_os_printf("%p ", obj_desc);
if (!obj_desc) {
acpi_os_printf("<Null Object>\n");
return;
}
/* Decode the object type */
switch (ACPI_GET_DESCRIPTOR_TYPE(obj_desc)) {
case ACPI_DESC_TYPE_PARSER:
acpi_os_printf("<Parser> ");
break;
case ACPI_DESC_TYPE_NAMED:
acpi_db_decode_node((struct acpi_namespace_node *)obj_desc);
break;
case ACPI_DESC_TYPE_OPERAND:
type = obj_desc->common.type;
if (type > ACPI_TYPE_LOCAL_MAX) {
acpi_os_printf(" Type %X [Invalid Type]", (u32)type);
return;
}
/* Decode the ACPI object type */
switch (obj_desc->common.type) {
case ACPI_TYPE_LOCAL_REFERENCE:
acpi_os_printf("[%s] ",
acpi_ut_get_reference_name(obj_desc));
/* Decode the refererence */
switch (obj_desc->reference.class) {
case ACPI_REFCLASS_LOCAL:
acpi_os_printf("%X ",
obj_desc->reference.value);
if (walk_state) {
obj_desc = walk_state->local_variables
[obj_desc->reference.value].object;
acpi_os_printf("%p", obj_desc);
acpi_db_decode_internal_object
(obj_desc);
}
break;
case ACPI_REFCLASS_ARG:
acpi_os_printf("%X ",
obj_desc->reference.value);
if (walk_state) {
obj_desc = walk_state->arguments
[obj_desc->reference.value].object;
acpi_os_printf("%p", obj_desc);
acpi_db_decode_internal_object
(obj_desc);
}
break;
case ACPI_REFCLASS_INDEX:
switch (obj_desc->reference.target_type) {
case ACPI_TYPE_BUFFER_FIELD:
acpi_os_printf("%p",
obj_desc->reference.
object);
acpi_db_decode_internal_object
(obj_desc->reference.object);
break;
case ACPI_TYPE_PACKAGE:
acpi_os_printf("%p",
obj_desc->reference.
where);
if (!obj_desc->reference.where) {
acpi_os_printf
(" Uninitialized WHERE pointer");
} else {
acpi_db_decode_internal_object(*
(obj_desc->
reference.
where));
}
break;
default:
acpi_os_printf
("Unknown index target type");
break;
}
break;
case ACPI_REFCLASS_REFOF:
if (!obj_desc->reference.object) {
acpi_os_printf
("Uninitialized reference subobject pointer");
break;
}
/* Reference can be to a Node or an Operand object */
switch (ACPI_GET_DESCRIPTOR_TYPE
(obj_desc->reference.object)) {
case ACPI_DESC_TYPE_NAMED:
acpi_db_decode_node(obj_desc->reference.
object);
break;
case ACPI_DESC_TYPE_OPERAND:
acpi_db_decode_internal_object
(obj_desc->reference.object);
break;
default:
break;
}
break;
case ACPI_REFCLASS_NAME:
acpi_db_decode_node(obj_desc->reference.node);
break;
case ACPI_REFCLASS_DEBUG:
case ACPI_REFCLASS_TABLE:
acpi_os_printf("\n");
break;
default: /* Unknown reference class */
acpi_os_printf("%2.2X\n",
obj_desc->reference.class);
break;
}
break;
default:
acpi_os_printf("<Obj> ");
acpi_db_decode_internal_object(obj_desc);
break;
}
break;
default:
acpi_os_printf("<Not a valid ACPI Object Descriptor> [%s]",
acpi_ut_get_descriptor_name(obj_desc));
break;
}
acpi_os_printf("\n");
}
/*******************************************************************************
*
* FUNCTION: acpi_db_decode_locals
*
* PARAMETERS: walk_state - State for current method
*
* RETURN: None
*
* DESCRIPTION: Display all locals for the currently running control method
*
******************************************************************************/
void acpi_db_decode_locals(struct acpi_walk_state *walk_state)
{
u32 i;
union acpi_operand_object *obj_desc;
struct acpi_namespace_node *node;
u8 display_locals = FALSE;
obj_desc = walk_state->method_desc;
node = walk_state->method_node;
if (!node) {
acpi_os_printf
("No method node (Executing subtree for buffer or opregion)\n");
return;
}
if (node->type != ACPI_TYPE_METHOD) {
acpi_os_printf("Executing subtree for Buffer/Package/Region\n");
return;
}
/* Are any locals actually set? */
for (i = 0; i < ACPI_METHOD_NUM_LOCALS; i++) {
obj_desc = walk_state->local_variables[i].object;
if (obj_desc) {
display_locals = TRUE;
break;
}
}
/* If any are set, only display the ones that are set */
if (display_locals) {
acpi_os_printf
("\nInitialized Local Variables for method [%4.4s]:\n",
acpi_ut_get_node_name(node));
for (i = 0; i < ACPI_METHOD_NUM_LOCALS; i++) {
obj_desc = walk_state->local_variables[i].object;
if (obj_desc) {
acpi_os_printf(" Local%X: ", i);
acpi_db_display_internal_object(obj_desc,
walk_state);
}
}
} else {
acpi_os_printf
("No Local Variables are initialized for method [%4.4s]\n",
acpi_ut_get_node_name(node));
}
}
/*******************************************************************************
*
* FUNCTION: acpi_db_decode_arguments
*
* PARAMETERS: walk_state - State for current method
*
* RETURN: None
*
* DESCRIPTION: Display all arguments for the currently running control method
*
******************************************************************************/
void acpi_db_decode_arguments(struct acpi_walk_state *walk_state)
{
u32 i;
union acpi_operand_object *obj_desc;
struct acpi_namespace_node *node;
u8 display_args = FALSE;
node = walk_state->method_node;
obj_desc = walk_state->method_desc;
if (!node) {
acpi_os_printf
("No method node (Executing subtree for buffer or opregion)\n");
return;
}
if (node->type != ACPI_TYPE_METHOD) {
acpi_os_printf("Executing subtree for Buffer/Package/Region\n");
return;
}
/* Are any arguments actually set? */
for (i = 0; i < ACPI_METHOD_NUM_ARGS; i++) {
obj_desc = walk_state->arguments[i].object;
if (obj_desc) {
display_args = TRUE;
break;
}
}
/* If any are set, only display the ones that are set */
if (display_args) {
acpi_os_printf("Initialized Arguments for Method [%4.4s]: "
"(%X arguments defined for method invocation)\n",
acpi_ut_get_node_name(node),
obj_desc->method.param_count);
for (i = 0; i < ACPI_METHOD_NUM_ARGS; i++) {
obj_desc = walk_state->arguments[i].object;
if (obj_desc) {
acpi_os_printf(" Arg%u: ", i);
acpi_db_display_internal_object(obj_desc,
walk_state);
}
}
} else {
acpi_os_printf
("No Arguments are initialized for method [%4.4s]\n",
acpi_ut_get_node_name(node));
}
}
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