698 lines
22 KiB
C
698 lines
22 KiB
C
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/******************************************************************************
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*
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* Module Name: amresnte - AML Interpreter object resolution
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* $Revision: 25 $
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*
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*****************************************************************************/
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/******************************************************************************
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*
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* 1. Copyright Notice
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*
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* Some or all of this work - Copyright (c) 1999, Intel Corp. All rights
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* reserved.
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*
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* 2. License
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*
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* 2.1. This is your license from Intel Corp. under its intellectual property
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* rights. You may have additional license terms from the party that provided
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* you this software, covering your right to use that party's intellectual
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* property rights.
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*
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* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
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* copy of the source code appearing in this file ("Covered Code") an
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* irrevocable, perpetual, worldwide license under Intel's copyrights in the
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* base code distributed originally by Intel ("Original Intel Code") to copy,
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* make derivatives, distribute, use and display any portion of the Covered
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* Code in any form, with the right to sublicense such rights; and
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*
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* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
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* license (with the right to sublicense), under only those claims of Intel
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* patents that are infringed by the Original Intel Code, to make, use, sell,
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* offer to sell, and import the Covered Code and derivative works thereof
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* solely to the minimum extent necessary to exercise the above copyright
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* license, and in no event shall the patent license extend to any additions
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* to or modifications of the Original Intel Code. No other license or right
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* is granted directly or by implication, estoppel or otherwise;
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*
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* The above copyright and patent license is granted only if the following
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* conditions are met:
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*
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* 3. Conditions
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*
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* 3.1. Redistribution of Source with Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification with rights to further distribute source must include
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* the above Copyright Notice, the above License, this list of Conditions,
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* and the following Disclaimer and Export Compliance provision. In addition,
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* Licensee must cause all Covered Code to which Licensee contributes to
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* contain a file documenting the changes Licensee made to create that Covered
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* Code and the date of any change. Licensee must include in that file the
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* documentation of any changes made by any predecessor Licensee. Licensee
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* must include a prominent statement that the modification is derived,
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* directly or indirectly, from Original Intel Code.
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*
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* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification without rights to further distribute source must
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* include the following Disclaimer and Export Compliance provision in the
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* documentation and/or other materials provided with distribution. In
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* addition, Licensee may not authorize further sublicense of source of any
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* portion of the Covered Code, and must include terms to the effect that the
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* license from Licensee to its licensee is limited to the intellectual
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* property embodied in the software Licensee provides to its licensee, and
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* not to intellectual property embodied in modifications its licensee may
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* make.
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*
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* 3.3. Redistribution of Executable. Redistribution in executable form of any
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* substantial portion of the Covered Code or modification must reproduce the
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* above Copyright Notice, and the following Disclaimer and Export Compliance
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* provision in the documentation and/or other materials provided with the
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* distribution.
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*
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* 3.4. Intel retains all right, title, and interest in and to the Original
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* Intel Code.
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*
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* 3.5. Neither the name Intel nor any other trademark owned or controlled by
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* Intel shall be used in advertising or otherwise to promote the sale, use or
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* other dealings in products derived from or relating to the Covered Code
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* without prior written authorization from Intel.
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*
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* 4. Disclaimer and Export Compliance
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*
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* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
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* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
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* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
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* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
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* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
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* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
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* PARTICULAR PURPOSE.
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*
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* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
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* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
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* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
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* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
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* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
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* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
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* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
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* LIMITED REMEDY.
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*
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* 4.3. Licensee shall not export, either directly or indirectly, any of this
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* software or system incorporating such software without first obtaining any
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* required license or other approval from the U. S. Department of Commerce or
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* any other agency or department of the United States Government. In the
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* event Licensee exports any such software from the United States or
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* re-exports any such software from a foreign destination, Licensee shall
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* ensure that the distribution and export/re-export of the software is in
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* compliance with all laws, regulations, orders, or other restrictions of the
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* U.S. Export Administration Regulations. Licensee agrees that neither it nor
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* any of its subsidiaries will export/re-export any technical data, process,
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* software, or service, directly or indirectly, to any country for which the
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* United States government or any agency thereof requires an export license,
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* other governmental approval, or letter of assurance, without first obtaining
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* such license, approval or letter.
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*
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*****************************************************************************/
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#define __AMRESNTE_C__
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#include "acpi.h"
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#include "amlcode.h"
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#include "acparser.h"
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#include "acdispat.h"
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#include "acinterp.h"
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#include "acnamesp.h"
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#include "actables.h"
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#include "acevents.h"
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#define _COMPONENT INTERPRETER
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MODULE_NAME ("amresnte")
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/*******************************************************************************
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*
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* FUNCTION: AcpiAmlResolveNodeToValue
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*
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* PARAMETERS: StackPtr - Pointer to a location on a stack that contains
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* a pointer to an Node
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*
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* RETURN: Status
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*
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* DESCRIPTION: Resolve a ACPI_NAMESPACE_NODE (Node,
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* A.K.A. a "direct name pointer")
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*
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* Note: for some of the data types, the pointer attached to the Node
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* can be either a pointer to an actual internal object or a pointer into the
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* AML stream itself. These types are currently:
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*
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* ACPI_TYPE_NUMBER
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* ACPI_TYPE_STRING
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* ACPI_TYPE_BUFFER
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* ACPI_TYPE_MUTEX
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* ACPI_TYPE_PACKAGE
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiAmlResolveNodeToValue (
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ACPI_NAMESPACE_NODE **StackPtr,
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ACPI_WALK_STATE *WalkState)
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{
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ACPI_STATUS Status = AE_OK;
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ACPI_OPERAND_OBJECT *ValDesc = NULL;
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ACPI_OPERAND_OBJECT *ObjDesc = NULL;
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ACPI_NAMESPACE_NODE *Node;
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UINT8 *AmlPointer = NULL;
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OBJECT_TYPE_INTERNAL EntryType;
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BOOLEAN Locked;
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BOOLEAN AttachedAmlPointer = FALSE;
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UINT8 AmlOpcode = 0;
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ACPI_INTEGER TempVal;
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OBJECT_TYPE_INTERNAL ObjectType;
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FUNCTION_TRACE ("AmlResolveEntryToValue");
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Node = *StackPtr;
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/*
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* The stack pointer is a "Direct name ptr", and points to a
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* a ACPI_NAMESPACE_NODE (Node). Get the pointer that is attached to
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* the Node.
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*/
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ValDesc = AcpiNsGetAttachedObject ((ACPI_HANDLE) Node);
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EntryType = AcpiNsGetType ((ACPI_HANDLE) Node);
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DEBUG_PRINT (TRACE_EXEC,
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("AmlResolveEntryToValue: Entry=%p ValDesc=%p Type=%X\n",
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Node, ValDesc, EntryType));
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/*
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* The ValDesc attached to the Node can be either:
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* 1) An internal ACPI object
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* 2) A pointer into the AML stream (into one of the ACPI system tables)
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*/
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if (AcpiTbSystemTablePointer (ValDesc))
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{
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AttachedAmlPointer = TRUE;
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AmlOpcode = *((UINT8 *) ValDesc);
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AmlPointer = ((UINT8 *) ValDesc) + 1;
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DEBUG_PRINT (TRACE_EXEC,
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("AmlResolveEntryToValue: Unparsed AML: %p Len=%X\n",
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AmlOpcode, AmlPointer));
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}
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/*
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* Several EntryTypes do not require further processing, so
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* we will return immediately
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*/
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/* Devices rarely have an attached object, return the Node
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* and Method locals and arguments have a pseudo-Node
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*/
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if (EntryType == ACPI_TYPE_DEVICE ||
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(Node->Flags & (ANOBJ_METHOD_ARG | ANOBJ_METHOD_LOCAL)))
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{
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return_ACPI_STATUS (AE_OK);
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}
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if (!ValDesc)
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{
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DEBUG_PRINT (ACPI_ERROR,
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("AmlResolveEntryToValue: No object attached to node %p\n",
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Node));
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return_ACPI_STATUS (AE_AML_NO_OPERAND);
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}
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/*
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* Action is based on the type of the Node, which indicates the type
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* of the attached object or pointer
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*/
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switch (EntryType)
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{
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case ACPI_TYPE_PACKAGE:
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if (AttachedAmlPointer)
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{
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/*
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* This means that the package initialization is not parsed
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* -- should not happen
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*/
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DEBUG_PRINT (ACPI_ERROR,
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("AmlResolveEntryToValue: Unparsed Packages not supported!\n"));
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return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
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}
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/* ValDesc is an internal object in all cases by the time we get here */
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if (ACPI_TYPE_PACKAGE != ValDesc->Common.Type)
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{
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DEBUG_PRINT (ACPI_ERROR,
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("AmlResolveEntryToValue: Object not a package, type %X\n",
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ValDesc->Common.Type));
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return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
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}
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/* Return an additional reference to the object */
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ObjDesc = ValDesc;
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AcpiCmAddReference (ObjDesc);
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break;
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case ACPI_TYPE_BUFFER:
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if (AttachedAmlPointer)
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{
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/*
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* This means that the buffer initialization is not parsed
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* -- should not happen
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*/
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DEBUG_PRINT (ACPI_ERROR,
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("AmlResolveEntryToValue: Unparsed Buffers not supported!\n"));
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return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
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}
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/* ValDesc is an internal object in all cases by the time we get here */
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if (ACPI_TYPE_BUFFER != ValDesc->Common.Type)
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{
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DEBUG_PRINT (ACPI_ERROR,
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("AmlResolveEntryToValue: Object not a buffer, type %X\n",
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ValDesc->Common.Type));
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return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
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}
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/* Return an additional reference to the object */
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ObjDesc = ValDesc;
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AcpiCmAddReference (ObjDesc);
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break;
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case ACPI_TYPE_STRING:
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if (AttachedAmlPointer)
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{
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/* Allocate a new string object */
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ObjDesc = AcpiCmCreateInternalObject (ACPI_TYPE_STRING);
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if (!ObjDesc)
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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/* Init the internal object */
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ObjDesc->String.Pointer = (NATIVE_CHAR *) AmlPointer;
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ObjDesc->String.Length = STRLEN (ObjDesc->String.Pointer);
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}
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else
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{
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if (ACPI_TYPE_STRING != ValDesc->Common.Type)
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{
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DEBUG_PRINT (ACPI_ERROR,
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("AmlResolveEntryToValue: Object not a string, type %X\n",
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ValDesc->Common.Type));
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return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
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}
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/* Return an additional reference to the object */
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ObjDesc = ValDesc;
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AcpiCmAddReference (ObjDesc);
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}
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break;
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case ACPI_TYPE_NUMBER:
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DEBUG_PRINT (TRACE_EXEC, ("AmlResolveEntryToValue: case Number \n"));
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/*
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* The Node has an attached internal object, make sure that it's a
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* number
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*/
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if (ACPI_TYPE_NUMBER != ValDesc->Common.Type)
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{
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DEBUG_PRINT (ACPI_ERROR,
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("AmlResolveToValue: Object not a Number, type %X\n",
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ValDesc->Common.Type));
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return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
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}
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/* Return an additional reference to the object */
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ObjDesc = ValDesc;
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AcpiCmAddReference (ObjDesc);
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break;
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case INTERNAL_TYPE_DEF_FIELD:
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/*
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* TBD: [Investigate] Is this the correct solution?
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*
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* This section was extended to convert to generic buffer if
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* the return length is greater than 32 bits, but still allows
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* for returning a type Number for smaller values because the
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* caller can then apply arithmetic operators on those fields.
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*
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* XXX - Implementation limitation: Fields are implemented as type
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* XXX - Number, but they really are supposed to be type Buffer.
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* XXX - The two are interchangeable only for lengths <= 32 bits.
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*/
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if(ValDesc->Field.Length > 32)
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{
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ObjectType = ACPI_TYPE_BUFFER;
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}
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else
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{
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ObjectType = ACPI_TYPE_NUMBER;
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}
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/*
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* Create the destination buffer object and the buffer space.
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*/
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ObjDesc = AcpiCmCreateInternalObject (ObjectType);
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if (!ObjDesc)
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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/*
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* Fill in the object specific details
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*/
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if (ACPI_TYPE_BUFFER == ObjectType)
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{
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ObjDesc->Buffer.Pointer = AcpiCmCallocate (ValDesc->Field.Length);
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if (!ObjDesc->Buffer.Pointer)
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{
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AcpiCmRemoveReference(ObjDesc);
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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ObjDesc->Buffer.Length = ValDesc->Field.Length;
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Status = AcpiAmlAccessNamedField (ACPI_READ, (ACPI_HANDLE) Node,
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ObjDesc->Buffer.Pointer, ObjDesc->Buffer.Length);
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if (ACPI_FAILURE (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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else
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{
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Status = AcpiAmlAccessNamedField (ACPI_READ, (ACPI_HANDLE) Node,
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&TempVal, sizeof (TempVal));
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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ObjDesc->Number.Value = TempVal;
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}
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DEBUG_PRINT (TRACE_EXEC,
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("AmlResolveEntryToValue: DefField Entry=%p ValDesc=%p Type=%X\n",
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Node, ValDesc, EntryType));
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break;
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case INTERNAL_TYPE_BANK_FIELD:
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if (AttachedAmlPointer)
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{
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DEBUG_PRINT (ACPI_ERROR,
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("AmlResolveEntryToValue: BankField cannot be an Aml ptr\n"));
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return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
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}
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if (INTERNAL_TYPE_BANK_FIELD != ValDesc->Common.Type)
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{
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DEBUG_PRINT (ACPI_ERROR, (
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"AmlResolveToValue: Object not a BankField, type %X\n",
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ValDesc->Common.Type));
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return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
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}
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/* Get the global lock if needed */
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ObjDesc = (ACPI_OPERAND_OBJECT *) *StackPtr;
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Locked = AcpiAmlAcquireGlobalLock (ObjDesc->FieldUnit.LockRule);
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/* Set Index value to select proper Data register */
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/* perform the update */
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Status = AcpiAmlAccessNamedField (ACPI_WRITE,
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ValDesc->BankField.BankSelect, &ValDesc->BankField.Value,
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sizeof (ValDesc->BankField.Value));
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AcpiAmlReleaseGlobalLock (Locked);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/* Read Data value */
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Status = AcpiAmlAccessNamedField (ACPI_READ,
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(ACPI_HANDLE) ValDesc->BankField.Container,
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&TempVal, sizeof (TempVal));
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/* Create an object for the result */
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ObjDesc = AcpiCmCreateInternalObject (ACPI_TYPE_NUMBER);
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if (!ObjDesc)
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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ObjDesc->Number.Value = TempVal;
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break;
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case INTERNAL_TYPE_INDEX_FIELD:
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if (AttachedAmlPointer)
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{
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DEBUG_PRINT (ACPI_ERROR, ("AmlResolveEntryToValue: Internal - IndexField cannot be an Aml ptr\n"));
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return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
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}
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if (INTERNAL_TYPE_INDEX_FIELD != ValDesc->Common.Type)
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{
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DEBUG_PRINT (ACPI_ERROR, (
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"AmlResolveToValue: Object not an IndexField, type %X\n",
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ValDesc->Common.Type));
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return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
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}
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/* Set Index value to select proper Data register */
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/* Get the global lock if needed */
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ObjDesc = (ACPI_OPERAND_OBJECT *) *StackPtr;
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Locked = AcpiAmlAcquireGlobalLock (ObjDesc->FieldUnit.LockRule);
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/* Perform the update */
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Status = AcpiAmlAccessNamedField (ACPI_WRITE,
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ValDesc->IndexField.Index, &ValDesc->IndexField.Value,
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sizeof (ValDesc->IndexField.Value));
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AcpiAmlReleaseGlobalLock (Locked);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/* Read Data value */
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Status = AcpiAmlAccessNamedField (ACPI_READ, ValDesc->IndexField.Data,
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&TempVal, sizeof (TempVal));
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if (ACPI_FAILURE (Status))
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|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Create an object for the result */
|
|
|
|
ObjDesc = AcpiCmCreateInternalObject (ACPI_TYPE_NUMBER);
|
|
if (!ObjDesc)
|
|
{
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
ObjDesc->Number.Value = TempVal;
|
|
break;
|
|
|
|
|
|
case ACPI_TYPE_FIELD_UNIT:
|
|
|
|
if (AttachedAmlPointer)
|
|
{
|
|
DEBUG_PRINT (ACPI_ERROR,
|
|
("AmlResolveEntryToValue: FieldUnit cannot be an Aml ptr\n"));
|
|
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
|
|
}
|
|
|
|
if (ValDesc->Common.Type != (UINT8) EntryType)
|
|
{
|
|
DEBUG_PRINT (ACPI_ERROR, (
|
|
"AmlResolveToValue: Object type %X not same as EntryType %X\n",
|
|
ValDesc->Common.Type, EntryType));
|
|
|
|
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
|
|
break;
|
|
}
|
|
|
|
/* Create object for result */
|
|
|
|
ObjDesc = AcpiCmCreateInternalObject (ACPI_TYPE_ANY);
|
|
if (!ObjDesc)
|
|
{
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
Status = AcpiAmlGetFieldUnitValue (ValDesc, ObjDesc);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
AcpiCmRemoveReference (ObjDesc);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
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 */
|
|
|
|
ObjDesc = ValDesc;
|
|
AcpiCmAddReference (ObjDesc);
|
|
break;
|
|
|
|
|
|
/* TYPE_Any is untyped, and thus there is no object associated with it */
|
|
|
|
case ACPI_TYPE_ANY:
|
|
|
|
DEBUG_PRINT (ACPI_ERROR,
|
|
("AmlResolveEntryToValue: Untyped entry %p, no attached object!\n",
|
|
Node));
|
|
|
|
return_ACPI_STATUS (AE_AML_OPERAND_TYPE); /* Cannot be AE_TYPE */
|
|
break;
|
|
|
|
|
|
/*
|
|
* The only named references allowed are named constants
|
|
*
|
|
* e.g. Name (\OSFL, Ones)
|
|
*/
|
|
case INTERNAL_TYPE_REFERENCE:
|
|
|
|
switch (ValDesc->Reference.OpCode)
|
|
{
|
|
|
|
case AML_ZERO_OP:
|
|
|
|
TempVal = 0;
|
|
break;
|
|
|
|
|
|
case AML_ONE_OP:
|
|
|
|
TempVal = 1;
|
|
break;
|
|
|
|
|
|
case AML_ONES_OP:
|
|
|
|
TempVal = ACPI_INTEGER_MAX;
|
|
break;
|
|
|
|
|
|
default:
|
|
|
|
DEBUG_PRINT (ACPI_ERROR,
|
|
("AmlResolveToValue/Number: Unsupported reference opcode %X\n",
|
|
ValDesc->Reference.OpCode));
|
|
|
|
return_ACPI_STATUS (AE_AML_BAD_OPCODE);
|
|
}
|
|
|
|
/* Create object for result */
|
|
|
|
ObjDesc = AcpiCmCreateInternalObject (ACPI_TYPE_NUMBER);
|
|
if (!ObjDesc)
|
|
{
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
ObjDesc->Number.Value = TempVal;
|
|
|
|
/* Truncate value if we are executing from a 32-bit ACPI table */
|
|
|
|
AcpiAmlTruncateFor32bitTable (ObjDesc, WalkState);
|
|
break;
|
|
|
|
|
|
/* Default case is for unknown types */
|
|
|
|
default:
|
|
|
|
DEBUG_PRINT (ACPI_ERROR,
|
|
("AmlResolveEntryToValue: Node %p - Unknown object type %X\n",
|
|
Node, EntryType));
|
|
|
|
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
|
|
|
|
} /* switch (EntryType) */
|
|
|
|
|
|
/* Put the object descriptor on the stack */
|
|
|
|
*StackPtr = (void *) ObjDesc;
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|