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marcus.erl |
/******************************************************************************
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*
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* Module Name: dsobject - Dispatcher object management routines
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2007, R. Byron Moore
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <acpi/acpi.h>
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#include <acpi/acparser.h>
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#include <acpi/amlcode.h>
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#include <acpi/acdispat.h>
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#include <acpi/acnamesp.h>
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#include <acpi/acinterp.h>
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#define _COMPONENT ACPI_DISPATCHER
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ACPI_MODULE_NAME("dsobject")
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/* Local prototypes */
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static acpi_status
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acpi_ds_build_internal_object(struct acpi_walk_state *walk_state,
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union acpi_parse_object *op,
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union acpi_operand_object **obj_desc_ptr);
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#ifndef ACPI_NO_METHOD_EXECUTION
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/*******************************************************************************
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*
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* FUNCTION: acpi_ds_build_internal_object
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*
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* PARAMETERS: walk_state - Current walk state
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* Op - Parser object to be translated
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* obj_desc_ptr - Where the ACPI internal object is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Translate a parser Op object to the equivalent namespace object
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* Simple objects are any objects other than a package object!
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*
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******************************************************************************/
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static acpi_status
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acpi_ds_build_internal_object(struct acpi_walk_state *walk_state,
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union acpi_parse_object *op,
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union acpi_operand_object **obj_desc_ptr)
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{
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union acpi_operand_object *obj_desc;
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acpi_status status;
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ACPI_FUNCTION_TRACE(ds_build_internal_object);
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*obj_desc_ptr = NULL;
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if (op->common.aml_opcode == AML_INT_NAMEPATH_OP) {
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/*
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* This is a named object reference. If this name was
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* previously looked up in the namespace, it was stored in this op.
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* Otherwise, go ahead and look it up now
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*/
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if (!op->common.node) {
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status = acpi_ns_lookup(walk_state->scope_info,
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op->common.value.string,
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ACPI_TYPE_ANY,
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ACPI_IMODE_EXECUTE,
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ACPI_NS_SEARCH_PARENT |
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ACPI_NS_DONT_OPEN_SCOPE, NULL,
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ACPI_CAST_INDIRECT_PTR(struct
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acpi_namespace_node,
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&(op->
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common.
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node)));
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if (ACPI_FAILURE(status)) {
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/* Check if we are resolving a named reference within a package */
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if ((status == AE_NOT_FOUND)
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&& (acpi_gbl_enable_interpreter_slack)
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&&
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((op->common.parent->common.aml_opcode ==
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AML_PACKAGE_OP)
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|| (op->common.parent->common.aml_opcode ==
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AML_VAR_PACKAGE_OP))) {
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/*
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* We didn't find the target and we are populating elements
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* of a package - ignore if slack enabled. Some ASL code
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* contains dangling invalid references in packages and
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* expects that no exception will be issued. Leave the
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* element as a null element. It cannot be used, but it
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* can be overwritten by subsequent ASL code - this is
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* typically the case.
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*/
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ACPI_DEBUG_PRINT((ACPI_DB_INFO,
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"Ignoring unresolved reference in package [%4.4s]\n",
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walk_state->
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scope_info->scope.
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node->name.ascii));
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return_ACPI_STATUS(AE_OK);
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} else {
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ACPI_ERROR_NAMESPACE(op->common.value.
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string, status);
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}
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return_ACPI_STATUS(status);
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}
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}
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/* Special object resolution for elements of a package */
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if ((op->common.parent->common.aml_opcode == AML_PACKAGE_OP) ||
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(op->common.parent->common.aml_opcode ==
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AML_VAR_PACKAGE_OP)) {
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/*
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* Attempt to resolve the node to a value before we insert it into
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* the package. If this is a reference to a common data type,
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* resolve it immediately. According to the ACPI spec, package
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* elements can only be "data objects" or method references.
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* Attempt to resolve to an Integer, Buffer, String or Package.
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* If cannot, return the named reference (for things like Devices,
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* Methods, etc.) Buffer Fields and Fields will resolve to simple
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* objects (int/buf/str/pkg).
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*
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* NOTE: References to things like Devices, Methods, Mutexes, etc.
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* will remain as named references. This behavior is not described
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* in the ACPI spec, but it appears to be an oversight.
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*/
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obj_desc = (union acpi_operand_object *)op->common.node;
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status =
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acpi_ex_resolve_node_to_value(ACPI_CAST_INDIRECT_PTR
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(struct
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acpi_namespace_node,
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&obj_desc),
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walk_state);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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switch (op->common.node->type) {
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/*
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* For these types, we need the actual node, not the subobject.
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* However, the subobject got an extra reference count above.
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*/
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case ACPI_TYPE_MUTEX:
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case ACPI_TYPE_METHOD:
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case ACPI_TYPE_POWER:
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case ACPI_TYPE_PROCESSOR:
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case ACPI_TYPE_EVENT:
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case ACPI_TYPE_REGION:
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case ACPI_TYPE_DEVICE:
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case ACPI_TYPE_THERMAL:
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| 186 |
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obj_desc =
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(union acpi_operand_object *)op->common.
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node;
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break;
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| 190 |
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| 191 |
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default:
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break;
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| 193 |
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}
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| 194 |
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| 195 |
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/*
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| 196 |
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* If above resolved to an operand object, we are done. Otherwise,
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| 197 |
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* we have a NS node, we must create the package entry as a named
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| 198 |
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* reference.
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| 199 |
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*/
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| 200 |
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if (ACPI_GET_DESCRIPTOR_TYPE(obj_desc) !=
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ACPI_DESC_TYPE_NAMED) {
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| 202 |
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goto exit;
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| 203 |
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}
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| 204 |
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}
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| 205 |
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}
|
| 206 |
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|
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| 207 |
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/* Create and init a new internal ACPI object */
|
| 208 |
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|
|
| 209 |
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obj_desc = acpi_ut_create_internal_object((acpi_ps_get_opcode_info
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| 210 |
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(op->common.aml_opcode))->
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| 211 |
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object_type);
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| 212 |
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if (!obj_desc) {
|
| 213 |
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return_ACPI_STATUS(AE_NO_MEMORY);
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| 214 |
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}
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| 215 |
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|
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| 216 |
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status =
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| 217 |
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acpi_ds_init_object_from_op(walk_state, op, op->common.aml_opcode,
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| 218 |
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&obj_desc);
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| 219 |
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if (ACPI_FAILURE(status)) {
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| 220 |
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acpi_ut_remove_reference(obj_desc);
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| 221 |
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return_ACPI_STATUS(status);
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| 222 |
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}
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| 223 |
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| 224 |
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exit:
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| 225 |
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*obj_desc_ptr = obj_desc;
|
| 226 |
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return_ACPI_STATUS(AE_OK);
|
| 227 |
|
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}
|
| 228 |
|
|
|
| 229 |
|
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/*******************************************************************************
|
| 230 |
|
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*
|
| 231 |
|
|
* FUNCTION: acpi_ds_build_internal_buffer_obj
|
| 232 |
|
|
*
|
| 233 |
|
|
* PARAMETERS: walk_state - Current walk state
|
| 234 |
|
|
* Op - Parser object to be translated
|
| 235 |
|
|
* buffer_length - Length of the buffer
|
| 236 |
|
|
* obj_desc_ptr - Where the ACPI internal object is returned
|
| 237 |
|
|
*
|
| 238 |
|
|
* RETURN: Status
|
| 239 |
|
|
*
|
| 240 |
|
|
* DESCRIPTION: Translate a parser Op package object to the equivalent
|
| 241 |
|
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* namespace object
|
| 242 |
|
|
*
|
| 243 |
|
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******************************************************************************/
|
| 244 |
|
|
|
| 245 |
|
|
acpi_status
|
| 246 |
|
|
acpi_ds_build_internal_buffer_obj(struct acpi_walk_state *walk_state,
|
| 247 |
|
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union acpi_parse_object *op,
|
| 248 |
|
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u32 buffer_length,
|
| 249 |
|
|
union acpi_operand_object **obj_desc_ptr)
|
| 250 |
|
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{
|
| 251 |
|
|
union acpi_parse_object *arg;
|
| 252 |
|
|
union acpi_operand_object *obj_desc;
|
| 253 |
|
|
union acpi_parse_object *byte_list;
|
| 254 |
|
|
u32 byte_list_length = 0;
|
| 255 |
|
|
|
| 256 |
|
|
ACPI_FUNCTION_TRACE(ds_build_internal_buffer_obj);
|
| 257 |
|
|
|
| 258 |
|
|
/*
|
| 259 |
|
|
* If we are evaluating a Named buffer object "Name (xxxx, Buffer)".
|
| 260 |
|
|
* The buffer object already exists (from the NS node), otherwise it must
|
| 261 |
|
|
* be created.
|
| 262 |
|
|
*/
|
| 263 |
|
|
obj_desc = *obj_desc_ptr;
|
| 264 |
|
|
if (!obj_desc) {
|
| 265 |
|
|
|
| 266 |
|
|
/* Create a new buffer object */
|
| 267 |
|
|
|
| 268 |
|
|
obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_BUFFER);
|
| 269 |
|
|
*obj_desc_ptr = obj_desc;
|
| 270 |
|
|
if (!obj_desc) {
|
| 271 |
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
| 272 |
|
|
}
|
| 273 |
|
|
}
|
| 274 |
|
|
|
| 275 |
|
|
/*
|
| 276 |
|
|
* Second arg is the buffer data (optional) byte_list can be either
|
| 277 |
|
|
* individual bytes or a string initializer. In either case, a
|
| 278 |
|
|
* byte_list appears in the AML.
|
| 279 |
|
|
*/
|
| 280 |
|
|
arg = op->common.value.arg; /* skip first arg */
|
| 281 |
|
|
|
| 282 |
|
|
byte_list = arg->named.next;
|
| 283 |
|
|
if (byte_list) {
|
| 284 |
|
|
if (byte_list->common.aml_opcode != AML_INT_BYTELIST_OP) {
|
| 285 |
|
|
ACPI_ERROR((AE_INFO,
|
| 286 |
|
|
"Expecting bytelist, got AML opcode %X in op %p",
|
| 287 |
|
|
byte_list->common.aml_opcode, byte_list));
|
| 288 |
|
|
|
| 289 |
|
|
acpi_ut_remove_reference(obj_desc);
|
| 290 |
|
|
return (AE_TYPE);
|
| 291 |
|
|
}
|
| 292 |
|
|
|
| 293 |
|
|
byte_list_length = (u32) byte_list->common.value.integer;
|
| 294 |
|
|
}
|
| 295 |
|
|
|
| 296 |
|
|
/*
|
| 297 |
|
|
* The buffer length (number of bytes) will be the larger of:
|
| 298 |
|
|
* 1) The specified buffer length and
|
| 299 |
|
|
* 2) The length of the initializer byte list
|
| 300 |
|
|
*/
|
| 301 |
|
|
obj_desc->buffer.length = buffer_length;
|
| 302 |
|
|
if (byte_list_length > buffer_length) {
|
| 303 |
|
|
obj_desc->buffer.length = byte_list_length;
|
| 304 |
|
|
}
|
| 305 |
|
|
|
| 306 |
|
|
/* Allocate the buffer */
|
| 307 |
|
|
|
| 308 |
|
|
if (obj_desc->buffer.length == 0) {
|
| 309 |
|
|
obj_desc->buffer.pointer = NULL;
|
| 310 |
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
|
| 311 |
|
|
"Buffer defined with zero length in AML, creating\n"));
|
| 312 |
|
|
} else {
|
| 313 |
|
|
obj_desc->buffer.pointer =
|
| 314 |
|
|
ACPI_ALLOCATE_ZEROED(obj_desc->buffer.length);
|
| 315 |
|
|
if (!obj_desc->buffer.pointer) {
|
| 316 |
|
|
acpi_ut_delete_object_desc(obj_desc);
|
| 317 |
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
| 318 |
|
|
}
|
| 319 |
|
|
|
| 320 |
|
|
/* Initialize buffer from the byte_list (if present) */
|
| 321 |
|
|
|
| 322 |
|
|
if (byte_list) {
|
| 323 |
|
|
ACPI_MEMCPY(obj_desc->buffer.pointer,
|
| 324 |
|
|
byte_list->named.data, byte_list_length);
|
| 325 |
|
|
}
|
| 326 |
|
|
}
|
| 327 |
|
|
|
| 328 |
|
|
obj_desc->buffer.flags |= AOPOBJ_DATA_VALID;
|
| 329 |
|
|
op->common.node = ACPI_CAST_PTR(struct acpi_namespace_node, obj_desc);
|
| 330 |
|
|
return_ACPI_STATUS(AE_OK);
|
| 331 |
|
|
}
|
| 332 |
|
|
|
| 333 |
|
|
/*******************************************************************************
|
| 334 |
|
|
*
|
| 335 |
|
|
* FUNCTION: acpi_ds_build_internal_package_obj
|
| 336 |
|
|
*
|
| 337 |
|
|
* PARAMETERS: walk_state - Current walk state
|
| 338 |
|
|
* Op - Parser object to be translated
|
| 339 |
|
|
* element_count - Number of elements in the package - this is
|
| 340 |
|
|
* the num_elements argument to Package()
|
| 341 |
|
|
* obj_desc_ptr - Where the ACPI internal object is returned
|
| 342 |
|
|
*
|
| 343 |
|
|
* RETURN: Status
|
| 344 |
|
|
*
|
| 345 |
|
|
* DESCRIPTION: Translate a parser Op package object to the equivalent
|
| 346 |
|
|
* namespace object
|
| 347 |
|
|
*
|
| 348 |
|
|
* NOTE: The number of elements in the package will be always be the num_elements
|
| 349 |
|
|
* count, regardless of the number of elements in the package list. If
|
| 350 |
|
|
* num_elements is smaller, only that many package list elements are used.
|
| 351 |
|
|
* if num_elements is larger, the Package object is padded out with
|
| 352 |
|
|
* objects of type Uninitialized (as per ACPI spec.)
|
| 353 |
|
|
*
|
| 354 |
|
|
* Even though the ASL compilers do not allow num_elements to be smaller
|
| 355 |
|
|
* than the Package list length (for the fixed length package opcode), some
|
| 356 |
|
|
* BIOS code modifies the AML on the fly to adjust the num_elements, and
|
| 357 |
|
|
* this code compensates for that. This also provides compatibility with
|
| 358 |
|
|
* other AML interpreters.
|
| 359 |
|
|
*
|
| 360 |
|
|
******************************************************************************/
|
| 361 |
|
|
|
| 362 |
|
|
acpi_status
|
| 363 |
|
|
acpi_ds_build_internal_package_obj(struct acpi_walk_state *walk_state,
|
| 364 |
|
|
union acpi_parse_object *op,
|
| 365 |
|
|
u32 element_count,
|
| 366 |
|
|
union acpi_operand_object **obj_desc_ptr)
|
| 367 |
|
|
{
|
| 368 |
|
|
union acpi_parse_object *arg;
|
| 369 |
|
|
union acpi_parse_object *parent;
|
| 370 |
|
|
union acpi_operand_object *obj_desc = NULL;
|
| 371 |
|
|
acpi_status status = AE_OK;
|
| 372 |
|
|
acpi_native_uint i;
|
| 373 |
|
|
|
| 374 |
|
|
ACPI_FUNCTION_TRACE(ds_build_internal_package_obj);
|
| 375 |
|
|
|
| 376 |
|
|
/* Find the parent of a possibly nested package */
|
| 377 |
|
|
|
| 378 |
|
|
parent = op->common.parent;
|
| 379 |
|
|
while ((parent->common.aml_opcode == AML_PACKAGE_OP) ||
|
| 380 |
|
|
(parent->common.aml_opcode == AML_VAR_PACKAGE_OP)) {
|
| 381 |
|
|
parent = parent->common.parent;
|
| 382 |
|
|
}
|
| 383 |
|
|
|
| 384 |
|
|
/*
|
| 385 |
|
|
* If we are evaluating a Named package object "Name (xxxx, Package)",
|
| 386 |
|
|
* the package object already exists, otherwise it must be created.
|
| 387 |
|
|
*/
|
| 388 |
|
|
obj_desc = *obj_desc_ptr;
|
| 389 |
|
|
if (!obj_desc) {
|
| 390 |
|
|
obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_PACKAGE);
|
| 391 |
|
|
*obj_desc_ptr = obj_desc;
|
| 392 |
|
|
if (!obj_desc) {
|
| 393 |
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
| 394 |
|
|
}
|
| 395 |
|
|
|
| 396 |
|
|
obj_desc->package.node = parent->common.node;
|
| 397 |
|
|
}
|
| 398 |
|
|
|
| 399 |
|
|
/*
|
| 400 |
|
|
* Allocate the element array (array of pointers to the individual
|
| 401 |
|
|
* objects) based on the num_elements parameter. Add an extra pointer slot
|
| 402 |
|
|
* so that the list is always null terminated.
|
| 403 |
|
|
*/
|
| 404 |
|
|
obj_desc->package.elements = ACPI_ALLOCATE_ZEROED(((acpi_size)
|
| 405 |
|
|
element_count +
|
| 406 |
|
|
1) * sizeof(void *));
|
| 407 |
|
|
|
| 408 |
|
|
if (!obj_desc->package.elements) {
|
| 409 |
|
|
acpi_ut_delete_object_desc(obj_desc);
|
| 410 |
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
| 411 |
|
|
}
|
| 412 |
|
|
|
| 413 |
|
|
obj_desc->package.count = element_count;
|
| 414 |
|
|
|
| 415 |
|
|
/*
|
| 416 |
|
|
* Initialize the elements of the package, up to the num_elements count.
|
| 417 |
|
|
* Package is automatically padded with uninitialized (NULL) elements
|
| 418 |
|
|
* if num_elements is greater than the package list length. Likewise,
|
| 419 |
|
|
* Package is truncated if num_elements is less than the list length.
|
| 420 |
|
|
*/
|
| 421 |
|
|
arg = op->common.value.arg;
|
| 422 |
|
|
arg = arg->common.next;
|
| 423 |
|
|
for (i = 0; arg && (i < element_count); i++) {
|
| 424 |
|
|
if (arg->common.aml_opcode == AML_INT_RETURN_VALUE_OP) {
|
| 425 |
|
|
if (arg->common.node->type == ACPI_TYPE_METHOD) {
|
| 426 |
|
|
/*
|
| 427 |
|
|
* A method reference "looks" to the parser to be a method
|
| 428 |
|
|
* invocation, so we special case it here
|
| 429 |
|
|
*/
|
| 430 |
|
|
arg->common.aml_opcode = AML_INT_NAMEPATH_OP;
|
| 431 |
|
|
status =
|
| 432 |
|
|
acpi_ds_build_internal_object(walk_state,
|
| 433 |
|
|
arg,
|
| 434 |
|
|
&obj_desc->
|
| 435 |
|
|
package.
|
| 436 |
|
|
elements[i]);
|
| 437 |
|
|
} else {
|
| 438 |
|
|
/* This package element is already built, just get it */
|
| 439 |
|
|
|
| 440 |
|
|
obj_desc->package.elements[i] =
|
| 441 |
|
|
ACPI_CAST_PTR(union acpi_operand_object,
|
| 442 |
|
|
arg->common.node);
|
| 443 |
|
|
}
|
| 444 |
|
|
} else {
|
| 445 |
|
|
status = acpi_ds_build_internal_object(walk_state, arg,
|
| 446 |
|
|
&obj_desc->
|
| 447 |
|
|
package.
|
| 448 |
|
|
elements[i]);
|
| 449 |
|
|
}
|
| 450 |
|
|
arg = arg->common.next;
|
| 451 |
|
|
}
|
| 452 |
|
|
|
| 453 |
|
|
if (!arg) {
|
| 454 |
|
|
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
|
| 455 |
|
|
"Package List length larger than NumElements count (%X), truncated\n",
|
| 456 |
|
|
element_count));
|
| 457 |
|
|
}
|
| 458 |
|
|
|
| 459 |
|
|
obj_desc->package.flags |= AOPOBJ_DATA_VALID;
|
| 460 |
|
|
op->common.node = ACPI_CAST_PTR(struct acpi_namespace_node, obj_desc);
|
| 461 |
|
|
return_ACPI_STATUS(status);
|
| 462 |
|
|
}
|
| 463 |
|
|
|
| 464 |
|
|
/*******************************************************************************
|
| 465 |
|
|
*
|
| 466 |
|
|
* FUNCTION: acpi_ds_create_node
|
| 467 |
|
|
*
|
| 468 |
|
|
* PARAMETERS: walk_state - Current walk state
|
| 469 |
|
|
* Node - NS Node to be initialized
|
| 470 |
|
|
* Op - Parser object to be translated
|
| 471 |
|
|
*
|
| 472 |
|
|
* RETURN: Status
|
| 473 |
|
|
*
|
| 474 |
|
|
* DESCRIPTION: Create the object to be associated with a namespace node
|
| 475 |
|
|
*
|
| 476 |
|
|
******************************************************************************/
|
| 477 |
|
|
|
| 478 |
|
|
acpi_status
|
| 479 |
|
|
acpi_ds_create_node(struct acpi_walk_state *walk_state,
|
| 480 |
|
|
struct acpi_namespace_node *node,
|
| 481 |
|
|
union acpi_parse_object *op)
|
| 482 |
|
|
{
|
| 483 |
|
|
acpi_status status;
|
| 484 |
|
|
union acpi_operand_object *obj_desc;
|
| 485 |
|
|
|
| 486 |
|
|
ACPI_FUNCTION_TRACE_PTR(ds_create_node, op);
|
| 487 |
|
|
|
| 488 |
|
|
/*
|
| 489 |
|
|
* Because of the execution pass through the non-control-method
|
| 490 |
|
|
* parts of the table, we can arrive here twice. Only init
|
| 491 |
|
|
* the named object node the first time through
|
| 492 |
|
|
*/
|
| 493 |
|
|
if (acpi_ns_get_attached_object(node)) {
|
| 494 |
|
|
return_ACPI_STATUS(AE_OK);
|
| 495 |
|
|
}
|
| 496 |
|
|
|
| 497 |
|
|
if (!op->common.value.arg) {
|
| 498 |
|
|
|
| 499 |
|
|
/* No arguments, there is nothing to do */
|
| 500 |
|
|
|
| 501 |
|
|
return_ACPI_STATUS(AE_OK);
|
| 502 |
|
|
}
|
| 503 |
|
|
|
| 504 |
|
|
/* Build an internal object for the argument(s) */
|
| 505 |
|
|
|
| 506 |
|
|
status = acpi_ds_build_internal_object(walk_state, op->common.value.arg,
|
| 507 |
|
|
&obj_desc);
|
| 508 |
|
|
if (ACPI_FAILURE(status)) {
|
| 509 |
|
|
return_ACPI_STATUS(status);
|
| 510 |
|
|
}
|
| 511 |
|
|
|
| 512 |
|
|
/* Re-type the object according to its argument */
|
| 513 |
|
|
|
| 514 |
|
|
node->type = ACPI_GET_OBJECT_TYPE(obj_desc);
|
| 515 |
|
|
|
| 516 |
|
|
/* Attach obj to node */
|
| 517 |
|
|
|
| 518 |
|
|
status = acpi_ns_attach_object(node, obj_desc, node->type);
|
| 519 |
|
|
|
| 520 |
|
|
/* Remove local reference to the object */
|
| 521 |
|
|
|
| 522 |
|
|
acpi_ut_remove_reference(obj_desc);
|
| 523 |
|
|
return_ACPI_STATUS(status);
|
| 524 |
|
|
}
|
| 525 |
|
|
|
| 526 |
|
|
#endif /* ACPI_NO_METHOD_EXECUTION */
|
| 527 |
|
|
|
| 528 |
|
|
/*******************************************************************************
|
| 529 |
|
|
*
|
| 530 |
|
|
* FUNCTION: acpi_ds_init_object_from_op
|
| 531 |
|
|
*
|
| 532 |
|
|
* PARAMETERS: walk_state - Current walk state
|
| 533 |
|
|
* Op - Parser op used to init the internal object
|
| 534 |
|
|
* Opcode - AML opcode associated with the object
|
| 535 |
|
|
* ret_obj_desc - Namespace object to be initialized
|
| 536 |
|
|
*
|
| 537 |
|
|
* RETURN: Status
|
| 538 |
|
|
*
|
| 539 |
|
|
* DESCRIPTION: Initialize a namespace object from a parser Op and its
|
| 540 |
|
|
* associated arguments. The namespace object is a more compact
|
| 541 |
|
|
* representation of the Op and its arguments.
|
| 542 |
|
|
*
|
| 543 |
|
|
******************************************************************************/
|
| 544 |
|
|
|
| 545 |
|
|
acpi_status
|
| 546 |
|
|
acpi_ds_init_object_from_op(struct acpi_walk_state *walk_state,
|
| 547 |
|
|
union acpi_parse_object *op,
|
| 548 |
|
|
u16 opcode,
|
| 549 |
|
|
union acpi_operand_object **ret_obj_desc)
|
| 550 |
|
|
{
|
| 551 |
|
|
const struct acpi_opcode_info *op_info;
|
| 552 |
|
|
union acpi_operand_object *obj_desc;
|
| 553 |
|
|
acpi_status status = AE_OK;
|
| 554 |
|
|
|
| 555 |
|
|
ACPI_FUNCTION_TRACE(ds_init_object_from_op);
|
| 556 |
|
|
|
| 557 |
|
|
obj_desc = *ret_obj_desc;
|
| 558 |
|
|
op_info = acpi_ps_get_opcode_info(opcode);
|
| 559 |
|
|
if (op_info->class == AML_CLASS_UNKNOWN) {
|
| 560 |
|
|
|
| 561 |
|
|
/* Unknown opcode */
|
| 562 |
|
|
|
| 563 |
|
|
return_ACPI_STATUS(AE_TYPE);
|
| 564 |
|
|
}
|
| 565 |
|
|
|
| 566 |
|
|
/* Perform per-object initialization */
|
| 567 |
|
|
|
| 568 |
|
|
switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
|
| 569 |
|
|
case ACPI_TYPE_BUFFER:
|
| 570 |
|
|
|
| 571 |
|
|
/*
|
| 572 |
|
|
* Defer evaluation of Buffer term_arg operand
|
| 573 |
|
|
*/
|
| 574 |
|
|
obj_desc->buffer.node =
|
| 575 |
|
|
ACPI_CAST_PTR(struct acpi_namespace_node,
|
| 576 |
|
|
walk_state->operands[0]);
|
| 577 |
|
|
obj_desc->buffer.aml_start = op->named.data;
|
| 578 |
|
|
obj_desc->buffer.aml_length = op->named.length;
|
| 579 |
|
|
break;
|
| 580 |
|
|
|
| 581 |
|
|
case ACPI_TYPE_PACKAGE:
|
| 582 |
|
|
|
| 583 |
|
|
/*
|
| 584 |
|
|
* Defer evaluation of Package term_arg operand
|
| 585 |
|
|
*/
|
| 586 |
|
|
obj_desc->package.node =
|
| 587 |
|
|
ACPI_CAST_PTR(struct acpi_namespace_node,
|
| 588 |
|
|
walk_state->operands[0]);
|
| 589 |
|
|
obj_desc->package.aml_start = op->named.data;
|
| 590 |
|
|
obj_desc->package.aml_length = op->named.length;
|
| 591 |
|
|
break;
|
| 592 |
|
|
|
| 593 |
|
|
case ACPI_TYPE_INTEGER:
|
| 594 |
|
|
|
| 595 |
|
|
switch (op_info->type) {
|
| 596 |
|
|
case AML_TYPE_CONSTANT:
|
| 597 |
|
|
/*
|
| 598 |
|
|
* Resolve AML Constants here - AND ONLY HERE!
|
| 599 |
|
|
* All constants are integers.
|
| 600 |
|
|
* We mark the integer with a flag that indicates that it started
|
| 601 |
|
|
* life as a constant -- so that stores to constants will perform
|
| 602 |
|
|
* as expected (noop). zero_op is used as a placeholder for optional
|
| 603 |
|
|
* target operands.
|
| 604 |
|
|
*/
|
| 605 |
|
|
obj_desc->common.flags = AOPOBJ_AML_CONSTANT;
|
| 606 |
|
|
|
| 607 |
|
|
switch (opcode) {
|
| 608 |
|
|
case AML_ZERO_OP:
|
| 609 |
|
|
|
| 610 |
|
|
obj_desc->integer.value = 0;
|
| 611 |
|
|
break;
|
| 612 |
|
|
|
| 613 |
|
|
case AML_ONE_OP:
|
| 614 |
|
|
|
| 615 |
|
|
obj_desc->integer.value = 1;
|
| 616 |
|
|
break;
|
| 617 |
|
|
|
| 618 |
|
|
case AML_ONES_OP:
|
| 619 |
|
|
|
| 620 |
|
|
obj_desc->integer.value = ACPI_INTEGER_MAX;
|
| 621 |
|
|
|
| 622 |
|
|
/* Truncate value if we are executing from a 32-bit ACPI table */
|
| 623 |
|
|
|
| 624 |
|
|
#ifndef ACPI_NO_METHOD_EXECUTION
|
| 625 |
|
|
acpi_ex_truncate_for32bit_table(obj_desc);
|
| 626 |
|
|
#endif
|
| 627 |
|
|
break;
|
| 628 |
|
|
|
| 629 |
|
|
case AML_REVISION_OP:
|
| 630 |
|
|
|
| 631 |
|
|
obj_desc->integer.value = ACPI_CA_VERSION;
|
| 632 |
|
|
break;
|
| 633 |
|
|
|
| 634 |
|
|
default:
|
| 635 |
|
|
|
| 636 |
|
|
ACPI_ERROR((AE_INFO,
|
| 637 |
|
|
"Unknown constant opcode %X",
|
| 638 |
|
|
opcode));
|
| 639 |
|
|
status = AE_AML_OPERAND_TYPE;
|
| 640 |
|
|
break;
|
| 641 |
|
|
}
|
| 642 |
|
|
break;
|
| 643 |
|
|
|
| 644 |
|
|
case AML_TYPE_LITERAL:
|
| 645 |
|
|
|
| 646 |
|
|
obj_desc->integer.value = op->common.value.integer;
|
| 647 |
|
|
#ifndef ACPI_NO_METHOD_EXECUTION
|
| 648 |
|
|
acpi_ex_truncate_for32bit_table(obj_desc);
|
| 649 |
|
|
#endif
|
| 650 |
|
|
break;
|
| 651 |
|
|
|
| 652 |
|
|
default:
|
| 653 |
|
|
ACPI_ERROR((AE_INFO, "Unknown Integer type %X",
|
| 654 |
|
|
op_info->type));
|
| 655 |
|
|
status = AE_AML_OPERAND_TYPE;
|
| 656 |
|
|
break;
|
| 657 |
|
|
}
|
| 658 |
|
|
break;
|
| 659 |
|
|
|
| 660 |
|
|
case ACPI_TYPE_STRING:
|
| 661 |
|
|
|
| 662 |
|
|
obj_desc->string.pointer = op->common.value.string;
|
| 663 |
|
|
obj_desc->string.length =
|
| 664 |
|
|
(u32) ACPI_STRLEN(op->common.value.string);
|
| 665 |
|
|
|
| 666 |
|
|
/*
|
| 667 |
|
|
* The string is contained in the ACPI table, don't ever try
|
| 668 |
|
|
* to delete it
|
| 669 |
|
|
*/
|
| 670 |
|
|
obj_desc->common.flags |= AOPOBJ_STATIC_POINTER;
|
| 671 |
|
|
break;
|
| 672 |
|
|
|
| 673 |
|
|
case ACPI_TYPE_METHOD:
|
| 674 |
|
|
break;
|
| 675 |
|
|
|
| 676 |
|
|
case ACPI_TYPE_LOCAL_REFERENCE:
|
| 677 |
|
|
|
| 678 |
|
|
switch (op_info->type) {
|
| 679 |
|
|
case AML_TYPE_LOCAL_VARIABLE:
|
| 680 |
|
|
|
| 681 |
|
|
/* Split the opcode into a base opcode + offset */
|
| 682 |
|
|
|
| 683 |
|
|
obj_desc->reference.opcode = AML_LOCAL_OP;
|
| 684 |
|
|
obj_desc->reference.offset = opcode - AML_LOCAL_OP;
|
| 685 |
|
|
|
| 686 |
|
|
#ifndef ACPI_NO_METHOD_EXECUTION
|
| 687 |
|
|
status = acpi_ds_method_data_get_node(AML_LOCAL_OP,
|
| 688 |
|
|
obj_desc->
|
| 689 |
|
|
reference.offset,
|
| 690 |
|
|
walk_state,
|
| 691 |
|
|
(struct
|
| 692 |
|
|
acpi_namespace_node
|
| 693 |
|
|
**)&obj_desc->
|
| 694 |
|
|
reference.object);
|
| 695 |
|
|
#endif
|
| 696 |
|
|
break;
|
| 697 |
|
|
|
| 698 |
|
|
case AML_TYPE_METHOD_ARGUMENT:
|
| 699 |
|
|
|
| 700 |
|
|
/* Split the opcode into a base opcode + offset */
|
| 701 |
|
|
|
| 702 |
|
|
obj_desc->reference.opcode = AML_ARG_OP;
|
| 703 |
|
|
obj_desc->reference.offset = opcode - AML_ARG_OP;
|
| 704 |
|
|
|
| 705 |
|
|
#ifndef ACPI_NO_METHOD_EXECUTION
|
| 706 |
|
|
status = acpi_ds_method_data_get_node(AML_ARG_OP,
|
| 707 |
|
|
obj_desc->
|
| 708 |
|
|
reference.offset,
|
| 709 |
|
|
walk_state,
|
| 710 |
|
|
(struct
|
| 711 |
|
|
acpi_namespace_node
|
| 712 |
|
|
**)&obj_desc->
|
| 713 |
|
|
reference.object);
|
| 714 |
|
|
#endif
|
| 715 |
|
|
break;
|
| 716 |
|
|
|
| 717 |
|
|
default: /* Other literals, etc.. */
|
| 718 |
|
|
|
| 719 |
|
|
if (op->common.aml_opcode == AML_INT_NAMEPATH_OP) {
|
| 720 |
|
|
|
| 721 |
|
|
/* Node was saved in Op */
|
| 722 |
|
|
|
| 723 |
|
|
obj_desc->reference.node = op->common.node;
|
| 724 |
|
|
}
|
| 725 |
|
|
|
| 726 |
|
|
obj_desc->reference.opcode = opcode;
|
| 727 |
|
|
break;
|
| 728 |
|
|
}
|
| 729 |
|
|
break;
|
| 730 |
|
|
|
| 731 |
|
|
default:
|
| 732 |
|
|
|
| 733 |
|
|
ACPI_ERROR((AE_INFO, "Unimplemented data type: %X",
|
| 734 |
|
|
ACPI_GET_OBJECT_TYPE(obj_desc)));
|
| 735 |
|
|
|
| 736 |
|
|
status = AE_AML_OPERAND_TYPE;
|
| 737 |
|
|
break;
|
| 738 |
|
|
}
|
| 739 |
|
|
|
| 740 |
|
|
return_ACPI_STATUS(status);
|
| 741 |
|
|
}
|
