1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
289 lines
8.5 KiB
C
289 lines
8.5 KiB
C
|
|
/******************************************************************************
|
|
*
|
|
* Module Name: exresnte - AML Interpreter object resolution
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/*
|
|
* Copyright (C) 2000 - 2005, R. Byron Moore
|
|
* 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 <acpi/acdispat.h>
|
|
#include <acpi/acinterp.h>
|
|
#include <acpi/acnamesp.h>
|
|
#include <acpi/acparser.h>
|
|
#include <acpi/amlcode.h>
|
|
|
|
|
|
#define _COMPONENT ACPI_EXECUTER
|
|
ACPI_MODULE_NAME ("exresnte")
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ex_resolve_node_to_value
|
|
*
|
|
* PARAMETERS: object_ptr - Pointer to a location that contains
|
|
* a pointer to a NS node, and will receive a
|
|
* pointer to the resolved object.
|
|
* walk_state - Current state. Valid only if executing AML
|
|
* code. NULL if simply resolving an object
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Resolve a Namespace node to a valued object
|
|
*
|
|
* Note: for some of the data types, the pointer attached to the Node
|
|
* can be either a pointer to an actual internal object or a pointer into the
|
|
* AML stream itself. These types are currently:
|
|
*
|
|
* ACPI_TYPE_INTEGER
|
|
* ACPI_TYPE_STRING
|
|
* ACPI_TYPE_BUFFER
|
|
* ACPI_TYPE_MUTEX
|
|
* ACPI_TYPE_PACKAGE
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ex_resolve_node_to_value (
|
|
struct acpi_namespace_node **object_ptr,
|
|
struct acpi_walk_state *walk_state)
|
|
|
|
{
|
|
acpi_status status = AE_OK;
|
|
union acpi_operand_object *source_desc;
|
|
union acpi_operand_object *obj_desc = NULL;
|
|
struct acpi_namespace_node *node;
|
|
acpi_object_type entry_type;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("ex_resolve_node_to_value");
|
|
|
|
|
|
/*
|
|
* The stack pointer points to a struct acpi_namespace_node (Node). Get the
|
|
* object that is attached to the Node.
|
|
*/
|
|
node = *object_ptr;
|
|
source_desc = acpi_ns_get_attached_object (node);
|
|
entry_type = acpi_ns_get_type ((acpi_handle) node);
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Entry=%p source_desc=%p [%s]\n",
|
|
node, source_desc, acpi_ut_get_type_name (entry_type)));
|
|
|
|
if ((entry_type == ACPI_TYPE_LOCAL_ALIAS) ||
|
|
(entry_type == ACPI_TYPE_LOCAL_METHOD_ALIAS)) {
|
|
/* There is always exactly one level of indirection */
|
|
|
|
node = ACPI_CAST_PTR (struct acpi_namespace_node, node->object);
|
|
source_desc = acpi_ns_get_attached_object (node);
|
|
entry_type = acpi_ns_get_type ((acpi_handle) node);
|
|
*object_ptr = node;
|
|
}
|
|
|
|
/*
|
|
* Several object types require no further processing:
|
|
* 1) Devices rarely have an attached object, return the Node
|
|
* 2) Method locals and arguments have a pseudo-Node
|
|
*/
|
|
if (entry_type == ACPI_TYPE_DEVICE ||
|
|
(node->flags & (ANOBJ_METHOD_ARG | ANOBJ_METHOD_LOCAL))) {
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
if (!source_desc) {
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "No object attached to node %p\n",
|
|
node));
|
|
return_ACPI_STATUS (AE_AML_NO_OPERAND);
|
|
}
|
|
|
|
/*
|
|
* Action is based on the type of the Node, which indicates the type
|
|
* of the attached object or pointer
|
|
*/
|
|
switch (entry_type) {
|
|
case ACPI_TYPE_PACKAGE:
|
|
|
|
if (ACPI_GET_OBJECT_TYPE (source_desc) != ACPI_TYPE_PACKAGE) {
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Object not a Package, type %s\n",
|
|
acpi_ut_get_object_type_name (source_desc)));
|
|
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
|
|
}
|
|
|
|
status = acpi_ds_get_package_arguments (source_desc);
|
|
if (ACPI_SUCCESS (status)) {
|
|
/* Return an additional reference to the object */
|
|
|
|
obj_desc = source_desc;
|
|
acpi_ut_add_reference (obj_desc);
|
|
}
|
|
break;
|
|
|
|
|
|
case ACPI_TYPE_BUFFER:
|
|
|
|
if (ACPI_GET_OBJECT_TYPE (source_desc) != ACPI_TYPE_BUFFER) {
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Object not a Buffer, type %s\n",
|
|
acpi_ut_get_object_type_name (source_desc)));
|
|
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
|
|
}
|
|
|
|
status = acpi_ds_get_buffer_arguments (source_desc);
|
|
if (ACPI_SUCCESS (status)) {
|
|
/* Return an additional reference to the object */
|
|
|
|
obj_desc = source_desc;
|
|
acpi_ut_add_reference (obj_desc);
|
|
}
|
|
break;
|
|
|
|
|
|
case ACPI_TYPE_STRING:
|
|
|
|
if (ACPI_GET_OBJECT_TYPE (source_desc) != ACPI_TYPE_STRING) {
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Object not a String, type %s\n",
|
|
acpi_ut_get_object_type_name (source_desc)));
|
|
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
|
|
}
|
|
|
|
/* Return an additional reference to the object */
|
|
|
|
obj_desc = source_desc;
|
|
acpi_ut_add_reference (obj_desc);
|
|
break;
|
|
|
|
|
|
case ACPI_TYPE_INTEGER:
|
|
|
|
if (ACPI_GET_OBJECT_TYPE (source_desc) != ACPI_TYPE_INTEGER) {
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Object not a Integer, type %s\n",
|
|
acpi_ut_get_object_type_name (source_desc)));
|
|
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
|
|
}
|
|
|
|
/* Return an additional reference to the object */
|
|
|
|
obj_desc = source_desc;
|
|
acpi_ut_add_reference (obj_desc);
|
|
break;
|
|
|
|
|
|
case ACPI_TYPE_BUFFER_FIELD:
|
|
case ACPI_TYPE_LOCAL_REGION_FIELD:
|
|
case ACPI_TYPE_LOCAL_BANK_FIELD:
|
|
case ACPI_TYPE_LOCAL_INDEX_FIELD:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "field_read Node=%p source_desc=%p Type=%X\n",
|
|
node, source_desc, entry_type));
|
|
|
|
status = acpi_ex_read_data_from_field (walk_state, source_desc, &obj_desc);
|
|
break;
|
|
|
|
/*
|
|
* For these objects, just return the object attached to the Node
|
|
*/
|
|
case ACPI_TYPE_MUTEX:
|
|
case ACPI_TYPE_METHOD:
|
|
case ACPI_TYPE_POWER:
|
|
case ACPI_TYPE_PROCESSOR:
|
|
case ACPI_TYPE_THERMAL:
|
|
case ACPI_TYPE_EVENT:
|
|
case ACPI_TYPE_REGION:
|
|
|
|
/* Return an additional reference to the object */
|
|
|
|
obj_desc = source_desc;
|
|
acpi_ut_add_reference (obj_desc);
|
|
break;
|
|
|
|
|
|
/* TYPE_ANY is untyped, and thus there is no object associated with it */
|
|
|
|
case ACPI_TYPE_ANY:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Untyped entry %p, no attached object!\n",
|
|
node));
|
|
|
|
return_ACPI_STATUS (AE_AML_OPERAND_TYPE); /* Cannot be AE_TYPE */
|
|
|
|
|
|
case ACPI_TYPE_LOCAL_REFERENCE:
|
|
|
|
switch (source_desc->reference.opcode) {
|
|
case AML_LOAD_OP:
|
|
|
|
/* This is a ddb_handle */
|
|
/* Return an additional reference to the object */
|
|
|
|
obj_desc = source_desc;
|
|
acpi_ut_add_reference (obj_desc);
|
|
break;
|
|
|
|
default:
|
|
/* No named references are allowed here */
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unsupported Reference opcode %X (%s)\n",
|
|
source_desc->reference.opcode,
|
|
acpi_ps_get_opcode_name (source_desc->reference.opcode)));
|
|
|
|
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
|
|
}
|
|
break;
|
|
|
|
|
|
/* Default case is for unknown types */
|
|
|
|
default:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Node %p - Unknown object type %X\n",
|
|
node, entry_type));
|
|
|
|
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
|
|
|
|
} /* switch (entry_type) */
|
|
|
|
|
|
/* Put the object descriptor on the stack */
|
|
|
|
*object_ptr = (void *) obj_desc;
|
|
return_ACPI_STATUS (status);
|
|
}
|
|
|
|
|