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/******************************************************************************
*
* Module Name: exconvrt - Object conversion routines
* $Revision: 24 $
*
*****************************************************************************/
/******************************************************************************
*
* 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 __EXCONVRT_C__
#include "acpi.h"
#include "acparser.h"
#include "acnamesp.h"
#include "acinterp.h"
#include "acevents.h"
#include "amlcode.h"
#include "acdispat.h"
#define _COMPONENT ACPI_EXECUTER
MODULE_NAME ("exconvrt")
/*******************************************************************************
*
* FUNCTION: AcpiExConvertToInteger
*
* 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
AcpiExConvertToInteger (
ACPI_OPERAND_OBJECT *ObjDesc,
ACPI_OPERAND_OBJECT **ResultDesc,
ACPI_WALK_STATE *WalkState)
{
UINT32 i;
ACPI_OPERAND_OBJECT *RetDesc;
UINT32 Count;
char *Pointer;
ACPI_INTEGER Result;
UINT32 IntegerSize = sizeof (ACPI_INTEGER);
FUNCTION_ENTRY ();
switch (ObjDesc->Common.Type)
{
case ACPI_TYPE_INTEGER:
*ResultDesc = ObjDesc;
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 = AcpiUtCreateInternalObject (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 (*ResultDesc == ObjDesc)
{
if (WalkState->Opcode != AML_STORE_OP)
{
AcpiUtRemoveReference (ObjDesc);
}
}
*ResultDesc = RetDesc;
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiExConvertToBuffer
*
* 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
AcpiExConvertToBuffer (
ACPI_OPERAND_OBJECT *ObjDesc,
ACPI_OPERAND_OBJECT **ResultDesc,
ACPI_WALK_STATE *WalkState)
{
ACPI_OPERAND_OBJECT *RetDesc;
UINT32 i;
UINT32 IntegerSize = sizeof (ACPI_INTEGER);
UINT8 *NewBuf;
FUNCTION_ENTRY ();
switch (ObjDesc->Common.Type)
{
case ACPI_TYPE_INTEGER:
/*
* Create a new Buffer
*/
RetDesc = AcpiUtCreateInternalObject (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 = ACPI_MEM_CALLOCATE (IntegerSize);
if (!NewBuf)
{
REPORT_ERROR
(("ExConvertToBuffer: Buffer allocation failure\n"));
AcpiUtRemoveReference (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 (*ResultDesc == ObjDesc)
{
if (WalkState->Opcode != AML_STORE_OP)
{
AcpiUtRemoveReference (ObjDesc);
}
}
*ResultDesc = RetDesc;
break;
case ACPI_TYPE_STRING:
*ResultDesc = ObjDesc;
break;
case ACPI_TYPE_BUFFER:
*ResultDesc = ObjDesc;
break;
default:
return (AE_TYPE);
break;
}
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiExConvertAscii
*
* PARAMETERS: Integer
*
* RETURN: Actual string length
*
* DESCRIPTION: Convert an ACPI Integer to a hex string
*
******************************************************************************/
UINT32
AcpiExConvertToAscii (
ACPI_INTEGER Integer,
UINT32 Base,
UINT8 *String)
{
UINT32 i;
UINT32 j;
UINT32 k = 0;
UINT8 HexDigit;
ACPI_INTEGER Digit;
UINT32 Remainder;
UINT32 Length = sizeof (ACPI_INTEGER);
BOOLEAN LeadingZero = TRUE;
FUNCTION_ENTRY ();
switch (Base)
{
case 10:
Remainder = 0;
for (i = ACPI_MAX_DECIMAL_DIGITS; i > 0 ; i--)
{
/* Divide by nth factor of 10 */
Digit = Integer;
for (j = 1; j < i; j++)
{
AcpiUtShortDivide (&Digit, 10, &Digit, &Remainder);
}
/* Create the decimal digit */
if (Digit != 0)
{
LeadingZero = FALSE;
}
if (!LeadingZero)
{
String[k] = (UINT8) (ASCII_ZERO + Remainder);
k++;
}
}
break;
case 16:
/* Copy the integer to the buffer */
for (i = 0, j = ((Length * 2) -1); i < (Length * 2); i++, j--)
{
HexDigit = AcpiUtHexToAsciiChar (Integer, (j * 4));
if (HexDigit != ASCII_ZERO)
{
LeadingZero = FALSE;
}
if (!LeadingZero)
{
String[k] = HexDigit;
k++;
}
}
break;
default:
break;
}
/*
* Since leading zeros are supressed, we must check for the case where
* the integer equals 0.
*
* Finally, null terminate the string and return the length
*/
if (!k)
{
String [0] = ASCII_ZERO;
k = 1;
}
String [k] = 0;
return (k);
}
/*******************************************************************************
*
* FUNCTION: AcpiExConvertToString
*
* 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
AcpiExConvertToString (
ACPI_OPERAND_OBJECT *ObjDesc,
ACPI_OPERAND_OBJECT **ResultDesc,
UINT32 Base,
UINT32 MaxLength,
ACPI_WALK_STATE *WalkState)
{
ACPI_OPERAND_OBJECT *RetDesc;
UINT32 i;
UINT32 Index;
UINT32 StringLength;
UINT32 IntegerSize = sizeof (ACPI_INTEGER);
UINT8 *NewBuf;
UINT8 *Pointer;
FUNCTION_ENTRY ();
switch (ObjDesc->Common.Type)
{
case ACPI_TYPE_INTEGER:
/* 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);
}
StringLength = IntegerSize * 2;
if (Base == 10)
{
StringLength = ACPI_MAX_DECIMAL_DIGITS;
}
/*
* Create a new String
*/
RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_STRING);
if (!RetDesc)
{
return (AE_NO_MEMORY);
}
/* Need enough space for one ASCII integer plus null terminator */
NewBuf = ACPI_MEM_CALLOCATE (StringLength + 1);
if (!NewBuf)
{
REPORT_ERROR
(("ExConvertToString: Buffer allocation failure\n"));
AcpiUtRemoveReference (RetDesc);
return (AE_NO_MEMORY);
}
/* Convert */
i = AcpiExConvertToAscii (ObjDesc->Integer.Value, Base, NewBuf);
/* Null terminate at the correct place */
if (MaxLength < i)
{
NewBuf[MaxLength] = 0;
RetDesc->String.Length = MaxLength;
}
else
{
NewBuf [i] = 0;
RetDesc->String.Length = i;
}
RetDesc->Buffer.Pointer = NewBuf;
/* Return the new buffer descriptor */
if (*ResultDesc == ObjDesc)
{
if (WalkState->Opcode != AML_STORE_OP)
{
AcpiUtRemoveReference (ObjDesc);
}
}
*ResultDesc = RetDesc;
break;
case ACPI_TYPE_BUFFER:
StringLength = ObjDesc->Buffer.Length * 3;
if (Base == 10)
{
StringLength = ObjDesc->Buffer.Length * 4;
}
if (MaxLength > ACPI_MAX_STRING_CONVERSION)
{
if (StringLength > ACPI_MAX_STRING_CONVERSION)
{
return (AE_AML_STRING_LIMIT);
}
}
/*
* Create a new string object
*/
RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_STRING);
if (!RetDesc)
{
return (AE_NO_MEMORY);
}
/* String length is the lesser of the Max or the actual length */
if (MaxLength < StringLength)
{
StringLength = MaxLength;
}
NewBuf = ACPI_MEM_CALLOCATE (StringLength + 1);
if (!NewBuf)
{
REPORT_ERROR
(("ExConvertToString: Buffer allocation failure\n"));
AcpiUtRemoveReference (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, Index = 0; i < ObjDesc->Buffer.Length; i++)
{
Index = AcpiExConvertToAscii (Pointer[i], Base, &NewBuf[Index]);
NewBuf[Index] = ' ';
Index++;
}
/* Null terminate */
NewBuf [Index-1] = 0;
RetDesc->Buffer.Pointer = NewBuf;
RetDesc->String.Length = STRLEN ((char *) NewBuf);
/* Return the new buffer descriptor */
if (*ResultDesc == ObjDesc)
{
if (WalkState->Opcode != AML_STORE_OP)
{
AcpiUtRemoveReference (ObjDesc);
}
}
*ResultDesc = RetDesc;
break;
case ACPI_TYPE_STRING:
if (MaxLength >= ObjDesc->String.Length)
{
*ResultDesc = ObjDesc;
}
else
{
/* Must copy the string first and then truncate it */
return (AE_NOT_IMPLEMENTED);
}
break;
default:
return (AE_TYPE);
break;
}
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiExConvertToTargetType
*
* PARAMETERS: *ObjDesc - Object to be converted.
* WalkState - Current method state
*
* RETURN: Status
*
* DESCRIPTION:
*
******************************************************************************/
ACPI_STATUS
AcpiExConvertToTargetType (
ACPI_OBJECT_TYPE8 DestinationType,
ACPI_OPERAND_OBJECT **ObjDesc,
ACPI_WALK_STATE *WalkState)
{
ACPI_STATUS Status = AE_OK;
FUNCTION_TRACE ("ExConvertToTargetType");
/*
* 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_REGION_FIELD:
/*
* Named field can always handle conversions
*/
break;
default:
/* No conversion allowed for these types */
if (DestinationType != (*ObjDesc)->Common.Type)
{
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
"Target does not allow conversion of type %s to %s\n",
AcpiUtGetTypeName ((*ObjDesc)->Common.Type),
AcpiUtGetTypeName (DestinationType)));
Status = AE_TYPE;
}
}
break;
case ARGI_TARGETREF:
switch (DestinationType)
{
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_BUFFER_FIELD:
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 = AcpiExConvertToInteger (*ObjDesc, ObjDesc, WalkState);
break;
case ACPI_TYPE_STRING:
/*
* The operand must be a String. We can convert an
* Integer or Buffer if necessary
*/
Status = AcpiExConvertToString (*ObjDesc, ObjDesc, 16, ACPI_UINT32_MAX, WalkState);
break;
case ACPI_TYPE_BUFFER:
/*
* The operand must be a String. We can convert an
* Integer or Buffer if necessary
*/
Status = AcpiExConvertToBuffer (*ObjDesc, ObjDesc, WalkState);
break;
}
break;
case ARGI_REFERENCE:
/*
* CreateXxxxField cases - we are storing the field object into the name
*/
break;
default:
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
"Unknown Target type ID 0x%X Op %s DestType %s\n",
GET_CURRENT_ARG_TYPE (WalkState->OpInfo->RuntimeArgs),
WalkState->OpInfo->Name, AcpiUtGetTypeName (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);
}
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