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| |
| /****************************************************************************** |
| * |
| * Module Name: exresnte - AML Interpreter object resolution |
| * |
| *****************************************************************************/ |
| |
| /****************************************************************************** |
| * |
| * 1. Copyright Notice |
| * |
| * Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp. |
| * All rights reserved. |
| * |
| * 2. License |
| * |
| * 2.1. This is your license from Intel Corp. under its intellectual property |
| * rights. You may have additional license terms from the party that provided |
| * you this software, covering your right to use that party's intellectual |
| * property rights. |
| * |
| * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a |
| * copy of the source code appearing in this file ("Covered Code") an |
| * irrevocable, perpetual, worldwide license under Intel's copyrights in the |
| * base code distributed originally by Intel ("Original Intel Code") to copy, |
| * make derivatives, distribute, use and display any portion of the Covered |
| * Code in any form, with the right to sublicense such rights; and |
| * |
| * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent |
| * license (with the right to sublicense), under only those claims of Intel |
| * patents that are infringed by the Original Intel Code, to make, use, sell, |
| * offer to sell, and import the Covered Code and derivative works thereof |
| * solely to the minimum extent necessary to exercise the above copyright |
| * license, and in no event shall the patent license extend to any additions |
| * to or modifications of the Original Intel Code. No other license or right |
| * is granted directly or by implication, estoppel or otherwise; |
| * |
| * The above copyright and patent license is granted only if the following |
| * conditions are met: |
| * |
| * 3. Conditions |
| * |
| * 3.1. Redistribution of Source with Rights to Further Distribute Source. |
| * Redistribution of source code of any substantial portion of the Covered |
| * Code or modification with rights to further distribute source must include |
| * the above Copyright Notice, the above License, this list of Conditions, |
| * and the following Disclaimer and Export Compliance provision. In addition, |
| * Licensee must cause all Covered Code to which Licensee contributes to |
| * contain a file documenting the changes Licensee made to create that Covered |
| * Code and the date of any change. Licensee must include in that file the |
| * documentation of any changes made by any predecessor Licensee. Licensee |
| * must include a prominent statement that the modification is derived, |
| * directly or indirectly, from Original Intel Code. |
| * |
| * 3.2. Redistribution of Source with no Rights to Further Distribute Source. |
| * Redistribution of source code of any substantial portion of the Covered |
| * Code or modification without rights to further distribute source must |
| * include the following Disclaimer and Export Compliance provision in the |
| * documentation and/or other materials provided with distribution. In |
| * addition, Licensee may not authorize further sublicense of source of any |
| * portion of the Covered Code, and must include terms to the effect that the |
| * license from Licensee to its licensee is limited to the intellectual |
| * property embodied in the software Licensee provides to its licensee, and |
| * not to intellectual property embodied in modifications its licensee may |
| * make. |
| * |
| * 3.3. Redistribution of Executable. Redistribution in executable form of any |
| * substantial portion of the Covered Code or modification must reproduce the |
| * above Copyright Notice, and the following Disclaimer and Export Compliance |
| * provision in the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3.4. Intel retains all right, title, and interest in and to the Original |
| * Intel Code. |
| * |
| * 3.5. Neither the name Intel nor any other trademark owned or controlled by |
| * Intel shall be used in advertising or otherwise to promote the sale, use or |
| * other dealings in products derived from or relating to the Covered Code |
| * without prior written authorization from Intel. |
| * |
| * 4. Disclaimer and Export Compliance |
| * |
| * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED |
| * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE |
| * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, |
| * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY |
| * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY |
| * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A |
| * PARTICULAR PURPOSE. |
| * |
| * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES |
| * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR |
| * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, |
| * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY |
| * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL |
| * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS |
| * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY |
| * LIMITED REMEDY. |
| * |
| * 4.3. Licensee shall not export, either directly or indirectly, any of this |
| * software or system incorporating such software without first obtaining any |
| * required license or other approval from the U. S. Department of Commerce or |
| * any other agency or department of the United States Government. In the |
| * event Licensee exports any such software from the United States or |
| * re-exports any such software from a foreign destination, Licensee shall |
| * ensure that the distribution and export/re-export of the software is in |
| * compliance with all laws, regulations, orders, or other restrictions of the |
| * U.S. Export Administration Regulations. Licensee agrees that neither it nor |
| * any of its subsidiaries will export/re-export any technical data, process, |
| * software, or service, directly or indirectly, to any country for which the |
| * United States government or any agency thereof requires an export license, |
| * other governmental approval, or letter of assurance, without first obtaining |
| * such license, approval or letter. |
| * |
| *****************************************************************************/ |
| |
| #define __EXRESNTE_C__ |
| |
| #include "acpi.h" |
| #include "accommon.h" |
| #include "acdispat.h" |
| #include "acinterp.h" |
| #include "acnamesp.h" |
| |
| |
| #define _COMPONENT ACPI_EXECUTER |
| ACPI_MODULE_NAME ("exresnte") |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiExResolveNodeToValue |
| * |
| * PARAMETERS: ObjectPtr - Pointer to a location that contains |
| * a pointer to a NS node, and will receive a |
| * pointer to the resolved object. |
| * WalkState - 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 |
| AcpiExResolveNodeToValue ( |
| ACPI_NAMESPACE_NODE **ObjectPtr, |
| ACPI_WALK_STATE *WalkState) |
| |
| { |
| ACPI_STATUS Status = AE_OK; |
| ACPI_OPERAND_OBJECT *SourceDesc; |
| ACPI_OPERAND_OBJECT *ObjDesc = NULL; |
| ACPI_NAMESPACE_NODE *Node; |
| ACPI_OBJECT_TYPE EntryType; |
| |
| |
| ACPI_FUNCTION_TRACE (ExResolveNodeToValue); |
| |
| |
| /* |
| * The stack pointer points to a ACPI_NAMESPACE_NODE (Node). Get the |
| * object that is attached to the Node. |
| */ |
| Node = *ObjectPtr; |
| SourceDesc = AcpiNsGetAttachedObject (Node); |
| EntryType = AcpiNsGetType ((ACPI_HANDLE) Node); |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Entry=%p SourceDesc=%p [%s]\n", |
| Node, SourceDesc, AcpiUtGetTypeName (EntryType))); |
| |
| if ((EntryType == ACPI_TYPE_LOCAL_ALIAS) || |
| (EntryType == ACPI_TYPE_LOCAL_METHOD_ALIAS)) |
| { |
| /* There is always exactly one level of indirection */ |
| |
| Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, Node->Object); |
| SourceDesc = AcpiNsGetAttachedObject (Node); |
| EntryType = AcpiNsGetType ((ACPI_HANDLE) Node); |
| *ObjectPtr = Node; |
| } |
| |
| /* |
| * Several object types require no further processing: |
| * 1) Device/Thermal objects don't have a "real" subobject, return the Node |
| * 2) Method locals and arguments have a pseudo-Node |
| * 3) 10/2007: Added method type to assist with Package construction. |
| */ |
| if ((EntryType == ACPI_TYPE_DEVICE) || |
| (EntryType == ACPI_TYPE_THERMAL) || |
| (EntryType == ACPI_TYPE_METHOD) || |
| (Node->Flags & (ANOBJ_METHOD_ARG | ANOBJ_METHOD_LOCAL))) |
| { |
| return_ACPI_STATUS (AE_OK); |
| } |
| |
| if (!SourceDesc) |
| { |
| ACPI_ERROR ((AE_INFO, "No object attached to node %p", |
| 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 (EntryType) |
| { |
| case ACPI_TYPE_PACKAGE: |
| |
| if (SourceDesc->Common.Type != ACPI_TYPE_PACKAGE) |
| { |
| ACPI_ERROR ((AE_INFO, "Object not a Package, type %s", |
| AcpiUtGetObjectTypeName (SourceDesc))); |
| return_ACPI_STATUS (AE_AML_OPERAND_TYPE); |
| } |
| |
| Status = AcpiDsGetPackageArguments (SourceDesc); |
| if (ACPI_SUCCESS (Status)) |
| { |
| /* Return an additional reference to the object */ |
| |
| ObjDesc = SourceDesc; |
| AcpiUtAddReference (ObjDesc); |
| } |
| break; |
| |
| |
| case ACPI_TYPE_BUFFER: |
| |
| if (SourceDesc->Common.Type != ACPI_TYPE_BUFFER) |
| { |
| ACPI_ERROR ((AE_INFO, "Object not a Buffer, type %s", |
| AcpiUtGetObjectTypeName (SourceDesc))); |
| return_ACPI_STATUS (AE_AML_OPERAND_TYPE); |
| } |
| |
| Status = AcpiDsGetBufferArguments (SourceDesc); |
| if (ACPI_SUCCESS (Status)) |
| { |
| /* Return an additional reference to the object */ |
| |
| ObjDesc = SourceDesc; |
| AcpiUtAddReference (ObjDesc); |
| } |
| break; |
| |
| |
| case ACPI_TYPE_STRING: |
| |
| if (SourceDesc->Common.Type != ACPI_TYPE_STRING) |
| { |
| ACPI_ERROR ((AE_INFO, "Object not a String, type %s", |
| AcpiUtGetObjectTypeName (SourceDesc))); |
| return_ACPI_STATUS (AE_AML_OPERAND_TYPE); |
| } |
| |
| /* Return an additional reference to the object */ |
| |
| ObjDesc = SourceDesc; |
| AcpiUtAddReference (ObjDesc); |
| break; |
| |
| |
| case ACPI_TYPE_INTEGER: |
| |
| if (SourceDesc->Common.Type != ACPI_TYPE_INTEGER) |
| { |
| ACPI_ERROR ((AE_INFO, "Object not a Integer, type %s", |
| AcpiUtGetObjectTypeName (SourceDesc))); |
| return_ACPI_STATUS (AE_AML_OPERAND_TYPE); |
| } |
| |
| /* Return an additional reference to the object */ |
| |
| ObjDesc = SourceDesc; |
| AcpiUtAddReference (ObjDesc); |
| 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, |
| "FieldRead Node=%p SourceDesc=%p Type=%X\n", |
| Node, SourceDesc, EntryType)); |
| |
| Status = AcpiExReadDataFromField (WalkState, SourceDesc, &ObjDesc); |
| break; |
| |
| /* For these objects, just return the object attached to the Node */ |
| |
| case ACPI_TYPE_MUTEX: |
| case ACPI_TYPE_POWER: |
| case ACPI_TYPE_PROCESSOR: |
| case ACPI_TYPE_EVENT: |
| case ACPI_TYPE_REGION: |
| |
| /* Return an additional reference to the object */ |
| |
| ObjDesc = SourceDesc; |
| AcpiUtAddReference (ObjDesc); |
| break; |
| |
| /* TYPE_ANY is untyped, and thus there is no object associated with it */ |
| |
| case ACPI_TYPE_ANY: |
| |
| ACPI_ERROR ((AE_INFO, |
| "Untyped entry %p, no attached object!", Node)); |
| |
| return_ACPI_STATUS (AE_AML_OPERAND_TYPE); /* Cannot be AE_TYPE */ |
| |
| |
| case ACPI_TYPE_LOCAL_REFERENCE: |
| |
| switch (SourceDesc->Reference.Class) |
| { |
| case ACPI_REFCLASS_TABLE: /* This is a DdbHandle */ |
| case ACPI_REFCLASS_REFOF: |
| case ACPI_REFCLASS_INDEX: |
| |
| /* Return an additional reference to the object */ |
| |
| ObjDesc = SourceDesc; |
| AcpiUtAddReference (ObjDesc); |
| break; |
| |
| default: |
| /* No named references are allowed here */ |
| |
| ACPI_ERROR ((AE_INFO, |
| "Unsupported Reference type 0x%X", |
| SourceDesc->Reference.Class)); |
| |
| return_ACPI_STATUS (AE_AML_OPERAND_TYPE); |
| } |
| break; |
| |
| |
| default: |
| |
| /* Default case is for unknown types */ |
| |
| ACPI_ERROR ((AE_INFO, |
| "Node %p - Unknown object type 0x%X", |
| Node, EntryType)); |
| |
| return_ACPI_STATUS (AE_AML_OPERAND_TYPE); |
| |
| } /* switch (EntryType) */ |
| |
| |
| /* Return the object descriptor */ |
| |
| *ObjectPtr = (void *) ObjDesc; |
| return_ACPI_STATUS (Status); |
| } |
| |
| |