freebsd-dev/sys/contrib/dev/acpica/exconvrt.c
2001-01-31 09:17:50 +00:00

654 lines
20 KiB
C

/******************************************************************************
*
* Module Name: amconvrt - Object conversion routines
* $Revision: 3 $
*
*****************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999, 2000, 2001, 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 __AMCONVRT_C__
#include "acpi.h"
#include "acparser.h"
#include "acnamesp.h"
#include "acinterp.h"
#include "acevents.h"
#include "amlcode.h"
#include "acdispat.h"
#define _COMPONENT INTERPRETER
MODULE_NAME ("amconvrt")
/*******************************************************************************
*
* FUNCTION: AcpiAmlConvertToTargetType
*
* PARAMETERS: *ObjDesc - Object to be converted.
* WalkState - Current method state
*
* RETURN: Status
*
* DESCRIPTION:
*
******************************************************************************/
ACPI_STATUS
AcpiAmlConvertToTargetType (
OBJECT_TYPE_INTERNAL DestinationType,
ACPI_OPERAND_OBJECT **ObjDesc,
ACPI_WALK_STATE *WalkState)
{
ACPI_STATUS Status = AE_OK;
FUNCTION_TRACE ("AmlConvertToTargetType");
/*
* If required by the target,
* perform implicit conversion on the source before we store it.
*/
switch (GET_CURRENT_ARG_TYPE (WalkState->OpInfo->RuntimeArgs))
{
case ARGI_SIMPLE_TARGET:
case ARGI_FIXED_TARGET:
case ARGI_INTEGER_REF: /* Handles Increment, Decrement cases */
switch (DestinationType)
{
case INTERNAL_TYPE_DEF_FIELD:
/*
* Named field can always handle conversions
*/
break;
default:
/* No conversion allowed for these types */
if (DestinationType != (*ObjDesc)->Common.Type)
{
DEBUG_PRINT (ACPI_ERROR,
("AmlConvertToTargetType: Target does not allow conversion of type %s to %s\n",
AcpiCmGetTypeName ((*ObjDesc)->Common.Type),
AcpiCmGetTypeName (DestinationType)));
Status = AE_TYPE;
}
}
break;
case ARGI_TARGETREF:
switch (DestinationType)
{
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_FIELD_UNIT:
case INTERNAL_TYPE_BANK_FIELD:
case INTERNAL_TYPE_INDEX_FIELD:
/*
* These types require an Integer operand. We can convert
* a Buffer or a String to an Integer if necessary.
*/
Status = AcpiAmlConvertToInteger (ObjDesc, WalkState);
break;
case ACPI_TYPE_STRING:
/*
* The operand must be a String. We can convert an
* Integer or Buffer if necessary
*/
Status = AcpiAmlConvertToString (ObjDesc, WalkState);
break;
case ACPI_TYPE_BUFFER:
/*
* The operand must be a String. We can convert an
* Integer or Buffer if necessary
*/
Status = AcpiAmlConvertToBuffer (ObjDesc, WalkState);
break;
}
break;
case ARGI_REFERENCE:
/*
* CreateXxxxField cases - we are storing the field object into the name
*/
break;
default:
DEBUG_PRINT (ACPI_ERROR,
("AmlConvertToTargetType: Unknown Target type ID 0x%X Op %s DestType %s\n",
GET_CURRENT_ARG_TYPE (WalkState->OpInfo->RuntimeArgs),
WalkState->OpInfo->Name,
AcpiCmGetTypeName (DestinationType)));
Status = AE_AML_INTERNAL;
}
/*
* Source-to-Target conversion semantics:
*
* If conversion to the target type cannot be performed, then simply
* overwrite the target with the new object and type.
*/
if (Status == AE_TYPE)
{
Status = AE_OK;
}
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiAmlConvertToInteger
*
* PARAMETERS: *ObjDesc - Object to be converted. Must be an
* Integer, Buffer, or String
* WalkState - Current method state
*
* RETURN: Status
*
* DESCRIPTION: Convert an ACPI Object to an integer.
*
******************************************************************************/
ACPI_STATUS
AcpiAmlConvertToInteger (
ACPI_OPERAND_OBJECT **ObjDesc,
ACPI_WALK_STATE *WalkState)
{
UINT32 i;
ACPI_OPERAND_OBJECT *RetDesc;
UINT32 Count;
char *Pointer;
ACPI_INTEGER Result;
UINT32 IntegerSize = sizeof (ACPI_INTEGER);
switch ((*ObjDesc)->Common.Type)
{
case ACPI_TYPE_INTEGER:
return (AE_OK);
case ACPI_TYPE_STRING:
Pointer = (*ObjDesc)->String.Pointer;
Count = (*ObjDesc)->String.Length;
break;
case ACPI_TYPE_BUFFER:
Pointer = (char *) (*ObjDesc)->Buffer.Pointer;
Count = (*ObjDesc)->Buffer.Length;
break;
default:
return (AE_TYPE);
}
/*
* Create a new integer
*/
RetDesc = AcpiCmCreateInternalObject (ACPI_TYPE_INTEGER);
if (!RetDesc)
{
return (AE_NO_MEMORY);
}
/* Handle both ACPI 1.0 and ACPI 2.0 Integer widths */
if (WalkState->MethodNode->Flags & ANOBJ_DATA_WIDTH_32)
{
/*
* We are running a method that exists in a 32-bit ACPI table.
* Truncate the value to 32 bits by zeroing out the upper 32-bit field
*/
IntegerSize = sizeof (UINT32);
}
/*
* Convert the buffer/string to an integer. Note that both buffers and
* strings are treated as raw data - we don't convert ascii to hex for
* strings.
*
* There are two terminating conditions for the loop:
* 1) The size of an integer has been reached, or
* 2) The end of the buffer or string has been reached
*/
Result = 0;
/* Transfer no more than an integer's worth of data */
if (Count > IntegerSize)
{
Count = IntegerSize;
}
/*
* String conversion is different than Buffer conversion
*/
switch ((*ObjDesc)->Common.Type)
{
case ACPI_TYPE_STRING:
/* TBD: Need to use 64-bit STRTOUL */
/*
* Convert string to an integer
* String must be hexadecimal as per the ACPI specification
*/
Result = STRTOUL (Pointer, NULL, 16);
break;
case ACPI_TYPE_BUFFER:
/*
* Buffer conversion - we simply grab enough raw data from the
* buffer to fill an integer
*/
for (i = 0; i < Count; i++)
{
/*
* Get next byte and shift it into the Result.
* Little endian is used, meaning that the first byte of the buffer
* is the LSB of the integer
*/
Result |= (((ACPI_INTEGER) Pointer[i]) << (i * 8));
}
break;
}
/* Save the Result, delete original descriptor, store new descriptor */
RetDesc->Integer.Value = Result;
if (WalkState->Opcode != AML_STORE_OP)
{
AcpiCmRemoveReference (*ObjDesc);
}
*ObjDesc = RetDesc;
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiAmlConvertToBuffer
*
* PARAMETERS: *ObjDesc - Object to be converted. Must be an
* Integer, Buffer, or String
* WalkState - Current method state
*
* RETURN: Status
*
* DESCRIPTION: Convert an ACPI Object to an Buffer
*
******************************************************************************/
ACPI_STATUS
AcpiAmlConvertToBuffer (
ACPI_OPERAND_OBJECT **ObjDesc,
ACPI_WALK_STATE *WalkState)
{
ACPI_OPERAND_OBJECT *RetDesc;
UINT32 i;
UINT32 IntegerSize = sizeof (ACPI_INTEGER);
UINT8 *NewBuf;
switch ((*ObjDesc)->Common.Type)
{
case ACPI_TYPE_INTEGER:
/*
* Create a new Buffer
*/
RetDesc = AcpiCmCreateInternalObject (ACPI_TYPE_BUFFER);
if (!RetDesc)
{
return (AE_NO_MEMORY);
}
/* Handle both ACPI 1.0 and ACPI 2.0 Integer widths */
if (WalkState->MethodNode->Flags & ANOBJ_DATA_WIDTH_32)
{
/*
* We are running a method that exists in a 32-bit ACPI table.
* Truncate the value to 32 bits by zeroing out the upper
* 32-bit field
*/
IntegerSize = sizeof (UINT32);
}
/* Need enough space for one integers */
RetDesc->Buffer.Length = IntegerSize;
NewBuf = AcpiCmCallocate (IntegerSize);
if (!NewBuf)
{
REPORT_ERROR
(("AmlExecDyadic2R/ConcatOp: Buffer allocation failure\n"));
AcpiCmRemoveReference (RetDesc);
return (AE_NO_MEMORY);
}
/* Copy the integer to the buffer */
for (i = 0; i < IntegerSize; i++)
{
NewBuf[i] = (UINT8) ((*ObjDesc)->Integer.Value >> (i * 8));
}
RetDesc->Buffer.Pointer = NewBuf;
/* Return the new buffer descriptor */
if (WalkState->Opcode != AML_STORE_OP)
{
AcpiCmRemoveReference (*ObjDesc);
}
*ObjDesc = RetDesc;
break;
case ACPI_TYPE_STRING:
break;
case ACPI_TYPE_BUFFER:
break;
default:
return (AE_TYPE);
break;
}
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiAmlConvertToString
*
* PARAMETERS: *ObjDesc - Object to be converted. Must be an
* Integer, Buffer, or String
* WalkState - Current method state
*
* RETURN: Status
*
* DESCRIPTION: Convert an ACPI Object to a string
*
******************************************************************************/
ACPI_STATUS
AcpiAmlConvertToString (
ACPI_OPERAND_OBJECT **ObjDesc,
ACPI_WALK_STATE *WalkState)
{
ACPI_OPERAND_OBJECT *RetDesc;
UINT32 i;
UINT32 Index;
UINT32 IntegerSize = sizeof (ACPI_INTEGER);
UINT8 *NewBuf;
UINT8 *Pointer;
switch ((*ObjDesc)->Common.Type)
{
case ACPI_TYPE_INTEGER:
/*
* Create a new String
*/
RetDesc = AcpiCmCreateInternalObject (ACPI_TYPE_STRING);
if (!RetDesc)
{
return (AE_NO_MEMORY);
}
/* Handle both ACPI 1.0 and ACPI 2.0 Integer widths */
if (WalkState->MethodNode->Flags & ANOBJ_DATA_WIDTH_32)
{
/*
* We are running a method that exists in a 32-bit ACPI table.
* Truncate the value to 32 bits by zeroing out the upper
* 32-bit field
*/
IntegerSize = sizeof (UINT32);
}
/* Need enough space for one ASCII integer plus null terminator */
RetDesc->String.Length = (IntegerSize * 2) + 1;
NewBuf = AcpiCmCallocate (RetDesc->String.Length);
if (!NewBuf)
{
REPORT_ERROR
(("AmlExecDyadic2R/ConcatOp: Buffer allocation failure\n"));
AcpiCmRemoveReference (RetDesc);
return (AE_NO_MEMORY);
}
/* Copy the integer to the buffer */
for (i = 0; i < (IntegerSize * 2); i++)
{
NewBuf[i] = AcpiGbl_HexToAscii [((*ObjDesc)->Integer.Value >> (i * 4)) & 0xF];
}
/* Null terminate */
NewBuf [i] = 0;
RetDesc->Buffer.Pointer = NewBuf;
/* Return the new buffer descriptor */
if (WalkState->Opcode != AML_STORE_OP)
{
AcpiCmRemoveReference (*ObjDesc);
}
*ObjDesc = RetDesc;
return (AE_OK);
case ACPI_TYPE_BUFFER:
if (((*ObjDesc)->Buffer.Length * 3) > ACPI_MAX_STRING_CONVERSION)
{
return (AE_AML_STRING_LIMIT);
}
/*
* Create a new String
*/
RetDesc = AcpiCmCreateInternalObject (ACPI_TYPE_STRING);
if (!RetDesc)
{
return (AE_NO_MEMORY);
}
/* Need enough space for one ASCII integer plus null terminator */
RetDesc->String.Length = (*ObjDesc)->Buffer.Length * 3;
NewBuf = AcpiCmCallocate (RetDesc->String.Length + 1);
if (!NewBuf)
{
REPORT_ERROR
(("AmlExecDyadic2R/ConcatOp: Buffer allocation failure\n"));
AcpiCmRemoveReference (RetDesc);
return (AE_NO_MEMORY);
}
/*
* Convert each byte of the buffer to two ASCII characters plus a space.
*/
Pointer = (*ObjDesc)->Buffer.Pointer;
Index = 0;
for (i = 0; i < (*ObjDesc)->Buffer.Length; i++)
{
NewBuf[Index + 0] = AcpiGbl_HexToAscii [Pointer[i] & 0x0F];
NewBuf[Index + 1] = AcpiGbl_HexToAscii [(Pointer[i] >> 4) & 0x0F];
NewBuf[Index + 2] = ' ';
Index += 3;
}
/* Null terminate */
NewBuf [Index] = 0;
RetDesc->Buffer.Pointer = NewBuf;
/* Return the new buffer descriptor */
if (WalkState->Opcode != AML_STORE_OP)
{
AcpiCmRemoveReference (*ObjDesc);
}
*ObjDesc = RetDesc;
break;
case ACPI_TYPE_STRING:
break;
default:
return (AE_TYPE);
break;
}
return (AE_OK);
}