532 lines
18 KiB
C
532 lines
18 KiB
C
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/******************************************************************************
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*
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* Module Name: amstore - AML Interpreter object store support
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* $Revision: 118 $
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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, 2000, Intel Corp.
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* All rights 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 __AMSTORE_C__
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#include "acpi.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 "amlcode.h"
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#include "acnamesp.h"
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#include "actables.h"
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#define _COMPONENT INTERPRETER
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MODULE_NAME ("amstore")
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/*******************************************************************************
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*
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* FUNCTION: AcpiAmlExecStore
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*
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* PARAMETERS: *ValDesc - Value to be stored
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* *DestDesc - Where to store it 0 Must be (ACPI_HANDLE)
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* or an ACPI_OPERAND_OBJECT of type
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* Reference; if the latter the descriptor
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* will be either reused or deleted.
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*
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* RETURN: Status
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*
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* DESCRIPTION: Store the value described by ValDesc into the location
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* described by DestDesc. Called by various interpreter
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* functions to store the result of an operation into
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* the destination operand.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiAmlExecStore (
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ACPI_OPERAND_OBJECT *ValDesc,
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ACPI_OPERAND_OBJECT *DestDesc,
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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 *DeleteDestDesc = NULL;
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ACPI_OPERAND_OBJECT *TmpDesc;
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ACPI_NAMESPACE_NODE *Node = NULL;
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UINT8 Value = 0;
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UINT32 Length;
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UINT32 i;
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FUNCTION_TRACE ("AmlExecStore");
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DEBUG_PRINT (ACPI_INFO, ("entered AcpiAmlExecStore: Val=%p, Dest=%p\n",
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ValDesc, DestDesc));
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/* Validate parameters */
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if (!ValDesc || !DestDesc)
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{
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DEBUG_PRINT (ACPI_ERROR,
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("AmlExecStore: Internal error - null pointer\n"));
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return_ACPI_STATUS (AE_AML_NO_OPERAND);
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}
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/* Examine the datatype of the DestDesc */
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if (VALID_DESCRIPTOR_TYPE (DestDesc, ACPI_DESC_TYPE_NAMED))
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{
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/* Dest is an ACPI_HANDLE, create a new object */
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Node = (ACPI_NAMESPACE_NODE *) DestDesc;
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DestDesc = AcpiCmCreateInternalObject (INTERNAL_TYPE_REFERENCE);
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if (!DestDesc)
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{
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/* Allocation failure */
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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/* Build a new Reference wrapper around the handle */
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DestDesc->Reference.OpCode = AML_NAME_OP;
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DestDesc->Reference.Object = Node;
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}
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else
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{
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DEBUG_PRINT (ACPI_INFO,
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("AmlExecStore: Dest is object (not handle) - may be deleted!\n"));
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}
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/* Destination object must be of type Reference */
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if (DestDesc->Common.Type != INTERNAL_TYPE_REFERENCE)
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{
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/* Destination is not an Reference */
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DEBUG_PRINT (ACPI_ERROR,
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("AmlExecStore: Destination is not an Reference [%p]\n", DestDesc));
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DUMP_STACK_ENTRY (ValDesc);
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DUMP_STACK_ENTRY (DestDesc);
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DUMP_OPERANDS (&DestDesc, IMODE_EXECUTE, "AmlExecStore",
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2, "target not Reference");
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return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
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}
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/* Examine the Reference opcode */
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switch (DestDesc->Reference.OpCode)
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{
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case AML_NAME_OP:
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/*
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* Storing into a Name
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*/
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DeleteDestDesc = DestDesc;
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Status = AcpiAmlStoreObjectToNode (ValDesc, DestDesc->Reference.Object,
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WalkState);
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break; /* Case NameOp */
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case AML_INDEX_OP:
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DeleteDestDesc = DestDesc;
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/*
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* Valid source value and destination reference pointer.
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*
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* ACPI Specification 1.0B section 15.2.3.4.2.13:
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* Destination should point to either a buffer or a package
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*/
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/*
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* Actually, storing to a package is not so simple. The source must be
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* evaluated and converted to the type of the destination and then the
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* source is copied into the destination - we can't just point to the
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* source object.
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*/
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if (DestDesc->Reference.TargetType == ACPI_TYPE_PACKAGE)
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{
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/*
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* The object at *(DestDesc->Reference.Where) is the
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* element within the package that is to be modified.
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*/
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TmpDesc = *(DestDesc->Reference.Where);
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if (TmpDesc)
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{
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/*
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* If the Destination element is a package, we will delete
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* that object and construct a new one.
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*
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* TBD: [Investigate] Should both the src and dest be required
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* to be packages?
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* && (ValDesc->Common.Type == ACPI_TYPE_PACKAGE)
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*/
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if (TmpDesc->Common.Type == ACPI_TYPE_PACKAGE)
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{
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/*
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* Take away the reference for being part of a package and
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* delete
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*/
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AcpiCmRemoveReference (TmpDesc);
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AcpiCmRemoveReference (TmpDesc);
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TmpDesc = NULL;
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}
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}
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if (!TmpDesc)
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{
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/*
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* If the TmpDesc is NULL, that means an uninitialized package
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* has been used as a destination, therefore, we must create
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* the destination element to match the type of the source
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* element NOTE: ValDesc can be of any type.
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*/
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TmpDesc = AcpiCmCreateInternalObject (ValDesc->Common.Type);
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if (!TmpDesc)
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{
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Status = AE_NO_MEMORY;
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goto Cleanup;
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}
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/*
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* If the source is a package, copy the source to the new dest
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*/
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if (ACPI_TYPE_PACKAGE == TmpDesc->Common.Type)
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{
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Status = AcpiAmlBuildCopyInternalPackageObject (
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ValDesc, TmpDesc, WalkState);
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if (ACPI_FAILURE (Status))
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{
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AcpiCmRemoveReference (TmpDesc);
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TmpDesc = NULL;
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goto Cleanup;
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}
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}
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/*
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* Install the new descriptor into the package and add a
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* reference to the newly created descriptor for now being
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* part of the parent package
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*/
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*(DestDesc->Reference.Where) = TmpDesc;
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AcpiCmAddReference (TmpDesc);
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}
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if (ACPI_TYPE_PACKAGE != TmpDesc->Common.Type)
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{
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/*
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* The destination element is not a package, so we need to
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* convert the contents of the source (ValDesc) and copy into
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* the destination (TmpDesc)
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*/
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Status = AcpiAmlStoreObjectToObject (ValDesc, TmpDesc,
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WalkState);
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if (ACPI_FAILURE (Status))
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{
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/*
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* An error occurrered when copying the internal object
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* so delete the reference.
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*/
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DEBUG_PRINT (ACPI_ERROR,
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("AmlExecStore/Index: Unable to copy the internal object\n"));
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Status = AE_AML_OPERAND_TYPE;
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}
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}
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break;
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}
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/*
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* Check that the destination is a Buffer Field type
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*/
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if (DestDesc->Reference.TargetType != ACPI_TYPE_BUFFER_FIELD)
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{
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Status = AE_AML_OPERAND_TYPE;
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break;
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}
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/*
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* Storing into a buffer at a location defined by an Index.
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*
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* Each 8-bit element of the source object is written to the
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* 8-bit Buffer Field of the Index destination object.
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*/
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/*
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* Set the TmpDesc to the destination object and type check.
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*/
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TmpDesc = DestDesc->Reference.Object;
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if (TmpDesc->Common.Type != ACPI_TYPE_BUFFER)
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{
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Status = AE_AML_OPERAND_TYPE;
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break;
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}
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/*
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* The assignment of the individual elements will be slightly
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* different for each source type.
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*/
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switch (ValDesc->Common.Type)
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{
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/*
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* If the type is Integer, the Length is 4.
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* This loop to assign each of the elements is somewhat
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* backward because of the Big Endian-ness of IA-64
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*/
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case ACPI_TYPE_NUMBER:
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Length = 4;
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for (i = Length; i != 0; i--)
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{
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Value = (UINT8)(ValDesc->Number.Value >> (MUL_8 (i - 1)));
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TmpDesc->Buffer.Pointer[DestDesc->Reference.Offset] = Value;
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}
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break;
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/*
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* If the type is Buffer, the Length is in the structure.
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* Just loop through the elements and assign each one in turn.
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*/
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case ACPI_TYPE_BUFFER:
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Length = ValDesc->Buffer.Length;
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for (i = 0; i < Length; i++)
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{
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Value = *(ValDesc->Buffer.Pointer + i);
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TmpDesc->Buffer.Pointer[DestDesc->Reference.Offset] = Value;
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}
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break;
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/*
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* If the type is String, the Length is in the structure.
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* Just loop through the elements and assign each one in turn.
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*/
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case ACPI_TYPE_STRING:
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Length = ValDesc->String.Length;
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for (i = 0; i < Length; i++)
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{
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Value = *(ValDesc->String.Pointer + i);
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TmpDesc->Buffer.Pointer[DestDesc->Reference.Offset] = Value;
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}
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break;
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/*
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* If source is not a valid type so return an error.
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*/
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default:
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DEBUG_PRINT (ACPI_ERROR,
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("AmlExecStore/Index: Source must be Number/Buffer/String type, not %X\n",
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ValDesc->Common.Type));
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Status = AE_AML_OPERAND_TYPE;
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break;
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}
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/*
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* If we had an error, break out of this case statement.
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*/
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if (ACPI_FAILURE (Status))
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{
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break;
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}
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/*
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* Set the return pointer
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*/
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DestDesc = TmpDesc;
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break;
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case AML_ZERO_OP:
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case AML_ONE_OP:
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case AML_ONES_OP:
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/*
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* Storing to a constant is a no-op -- see ACPI Specification
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* Delete the result descriptor.
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*/
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DeleteDestDesc = DestDesc;
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break;
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case AML_LOCAL_OP:
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Status = AcpiDsMethodDataSetValue (MTH_TYPE_LOCAL,
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(DestDesc->Reference.Offset), ValDesc, WalkState);
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DeleteDestDesc = DestDesc;
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break;
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case AML_ARG_OP:
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Status = AcpiDsMethodDataSetValue (MTH_TYPE_ARG,
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(DestDesc->Reference.Offset), ValDesc, WalkState);
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DeleteDestDesc = DestDesc;
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break;
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case AML_DEBUG_OP:
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/*
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* Storing to the Debug object causes the value stored to be
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* displayed and otherwise has no effect -- see ACPI Specification
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*/
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DEBUG_PRINT (ACPI_INFO, ("**** Write to Debug Object: ****: \n"));
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if (ValDesc->Common.Type == ACPI_TYPE_STRING)
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{
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DEBUG_PRINT (ACPI_INFO, ("%s\n", ValDesc->String.Pointer));
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}
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else
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{
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DUMP_STACK_ENTRY (ValDesc);
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}
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DeleteDestDesc = DestDesc;
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break;
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default:
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DEBUG_PRINT (ACPI_ERROR,
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("AmlExecStore: Internal error - Unknown Reference subtype %02x\n",
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DestDesc->Reference.OpCode));
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/* TBD: [Restructure] use object dump routine !! */
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DUMP_BUFFER (DestDesc, sizeof (ACPI_OPERAND_OBJECT));
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DeleteDestDesc = DestDesc;
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Status = AE_AML_INTERNAL;
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} /* switch(DestDesc->Reference.OpCode) */
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Cleanup:
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/* Cleanup and exit*/
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if (DeleteDestDesc)
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{
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AcpiCmRemoveReference (DeleteDestDesc);
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}
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return_ACPI_STATUS (Status);
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}
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