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kolibrios/drivers/devman/acpica/compiler/dtfield.c
Sergey Semyonov (Serge) 8ec96e9db0 update acpica 
git-svn-id: svn://kolibrios.org@2216 a494cfbc-eb01-0410-851d-a64ba20cac60
2011-09-20 16:54:11 +00:00

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/******************************************************************************
*
* Module Name: dtfield.c - Code generation for individual source fields
*
*****************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999 - 2011, 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 __DTFIELD_C__
#include "aslcompiler.h"
#include "dtcompiler.h"
#define _COMPONENT DT_COMPILER
ACPI_MODULE_NAME ("dtfield")
/* Local prototypes */
static void
DtCompileString (
UINT8 *Buffer,
DT_FIELD *Field,
UINT32 ByteLength);
static void
DtCompileUnicode (
UINT8 *Buffer,
DT_FIELD *Field,
UINT32 ByteLength);
static ACPI_STATUS
DtCompileUuid (
UINT8 *Buffer,
DT_FIELD *Field,
UINT32 ByteLength);
static char *
DtNormalizeBuffer (
char *Buffer,
UINT32 *Count);
/******************************************************************************
*
* FUNCTION: DtCompileOneField
*
* PARAMETERS: Buffer - Output buffer
* Field - Field to be compiled
* ByteLength - Byte length of the field
* Type - Field type
*
* RETURN: None
*
* DESCRIPTION: Compile a field value to binary
*
*****************************************************************************/
void
DtCompileOneField (
UINT8 *Buffer,
DT_FIELD *Field,
UINT32 ByteLength,
UINT8 Type,
UINT8 Flags)
{
ACPI_STATUS Status;
switch (Type)
{
case DT_FIELD_TYPE_INTEGER:
DtCompileInteger (Buffer, Field, ByteLength, Flags);
break;
case DT_FIELD_TYPE_STRING:
DtCompileString (Buffer, Field, ByteLength);
break;
case DT_FIELD_TYPE_UUID:
Status = DtCompileUuid (Buffer, Field, ByteLength);
if (ACPI_SUCCESS (Status))
{
break;
}
/* Fall through. */
case DT_FIELD_TYPE_BUFFER:
DtCompileBuffer (Buffer, Field->Value, Field, ByteLength);
break;
case DT_FIELD_TYPE_UNICODE:
DtCompileUnicode (Buffer, Field, ByteLength);
break;
case DT_FIELD_TYPE_DEVICE_PATH:
break;
default:
DtFatal (ASL_MSG_COMPILER_INTERNAL, Field, "Invalid field type");
break;
}
}
/******************************************************************************
*
* FUNCTION: DtCompileString
*
* PARAMETERS: Buffer - Output buffer
* Field - String to be copied to buffer
* ByteLength - Maximum length of string
*
* RETURN: None
*
* DESCRIPTION: Copy string to the buffer
*
*****************************************************************************/
static void
DtCompileString (
UINT8 *Buffer,
DT_FIELD *Field,
UINT32 ByteLength)
{
UINT32 Length;
Length = ACPI_STRLEN (Field->Value);
/* Check if the string is too long for the field */
if (Length > ByteLength)
{
sprintf (MsgBuffer, "Maximum %u characters", ByteLength);
DtError (ASL_ERROR, ASL_MSG_STRING_LENGTH, Field, MsgBuffer);
Length = ByteLength;
}
ACPI_MEMCPY (Buffer, Field->Value, Length);
}
/******************************************************************************
*
* FUNCTION: DtCompileUnicode
*
* PARAMETERS: Buffer - Output buffer
* Field - String to be copied to buffer
* ByteLength - Maximum length of string
*
* RETURN: None
*
* DESCRIPTION: Convert ASCII string to Unicode string
*
* Note: The Unicode string is 16 bits per character, no leading signature,
* with a 16-bit terminating NULL.
*
*****************************************************************************/
static void
DtCompileUnicode (
UINT8 *Buffer,
DT_FIELD *Field,
UINT32 ByteLength)
{
UINT32 Count;
UINT32 i;
char *AsciiString;
UINT16 *UnicodeString;
AsciiString = Field->Value;
UnicodeString = (UINT16 *) Buffer;
Count = ACPI_STRLEN (AsciiString) + 1;
/* Convert to Unicode string (including null terminator) */
for (i = 0; i < Count; i++)
{
UnicodeString[i] = (UINT16) AsciiString[i];
}
}
/*******************************************************************************
*
* FUNCTION: DtCompileUuid
*
* PARAMETERS: Buffer - Output buffer
* Field - String to be copied to buffer
* ByteLength - Maximum length of string
*
* RETURN: None
*
* DESCRIPTION: Convert UUID string to 16-byte buffer
*
******************************************************************************/
static ACPI_STATUS
DtCompileUuid (
UINT8 *Buffer,
DT_FIELD *Field,
UINT32 ByteLength)
{
char *InString;
ACPI_STATUS Status;
InString = Field->Value;
Status = AuValidateUuid (InString);
if (ACPI_FAILURE (Status))
{
sprintf (MsgBuffer, "%s", Field->Value);
DtNameError (ASL_ERROR, ASL_MSG_INVALID_UUID, Field, MsgBuffer);
}
else
{
Status = AuConvertStringToUuid (InString, (char *) Buffer);
}
return (Status);
}
/******************************************************************************
*
* FUNCTION: DtCompileInteger
*
* PARAMETERS: Buffer - Output buffer
* Field - Field obj with Integer to be compiled
* ByteLength - Byte length of the integer
* Flags - Additional compile info
*
* RETURN: None
*
* DESCRIPTION: Compile an integer. Supports integer expressions with C-style
* operators.
*
*****************************************************************************/
void
DtCompileInteger (
UINT8 *Buffer,
DT_FIELD *Field,
UINT32 ByteLength,
UINT8 Flags)
{
UINT64 Value;
UINT64 MaxValue;
ACPI_STATUS Status;
/* Output buffer byte length must be in range 1-8 */
if ((ByteLength > 8) || (ByteLength == 0))
{
DtFatal (ASL_MSG_COMPILER_INTERNAL, Field,
"Invalid internal Byte length");
return;
}
/* Resolve integer expression to a single integer value */
Status = DtResolveIntegerExpression (Field, &Value);
if (ACPI_FAILURE (Status))
{
return;
}
/* Ensure that reserved fields are set to zero */
/* TBD: should we set to zero, or just make this an ERROR? */
/* TBD: Probably better to use a flag */
if (!ACPI_STRCMP (Field->Name, "Reserved") &&
(Value != 0))
{
DtError (ASL_WARNING, ASL_MSG_RESERVED_VALUE, Field,
"Setting to zero");
Value = 0;
}
/* Check if the value must be non-zero */
if ((Value == 0) && (Flags & DT_NON_ZERO))
{
DtError (ASL_ERROR, ASL_MSG_ZERO_VALUE, Field, NULL);
}
/*
* Generate the maximum value for the data type (ByteLength)
* Note: construct chosen for maximum portability
*/
MaxValue = ((UINT64) (-1)) >> (64 - (ByteLength * 8));
/* Validate that the input value is within range of the target */
if (Value > MaxValue)
{
sprintf (MsgBuffer, "%8.8X%8.8X", ACPI_FORMAT_UINT64 (Value));
DtError (ASL_ERROR, ASL_MSG_INTEGER_SIZE, Field, MsgBuffer);
}
ACPI_MEMCPY (Buffer, &Value, ByteLength);
return;
}
/******************************************************************************
*
* FUNCTION: DtNormalizeBuffer
*
* PARAMETERS: Buffer - Input buffer
* Count - Output the count of hex number in
* the Buffer
*
* RETURN: The normalized buffer, freed by caller
*
* DESCRIPTION: [1A,2B,3C,4D] or 1A, 2B, 3C, 4D will be normalized
* to 1A 2B 3C 4D
*
*****************************************************************************/
static char *
DtNormalizeBuffer (
char *Buffer,
UINT32 *Count)
{
char *NewBuffer;
char *TmpBuffer;
UINT32 BufferCount = 0;
BOOLEAN Separator = TRUE;
char c;
NewBuffer = UtLocalCalloc (ACPI_STRLEN (Buffer) + 1);
TmpBuffer = NewBuffer;
while ((c = *Buffer++))
{
switch (c)
{
/* Valid separators */
case '[':
case ']':
case ' ':
case ',':
Separator = TRUE;
break;
default:
if (Separator)
{
/* Insert blank as the standard separator */
if (NewBuffer[0])
{
*TmpBuffer++ = ' ';
BufferCount++;
}
Separator = FALSE;
}
*TmpBuffer++ = c;
break;
}
}
*Count = BufferCount + 1;
return (NewBuffer);
}
/******************************************************************************
*
* FUNCTION: DtCompileBuffer
*
* PARAMETERS: Buffer - Output buffer
* StringValue - Integer list to be compiled
* Field - Current field object
* ByteLength - Byte length of the integer list
*
* RETURN: Count of remaining data in the input list
*
* DESCRIPTION: Compile and pack an integer list, for example
* "AA 1F 20 3B" ==> Buffer[] = {0xAA,0x1F,0x20,0x3B}
*
*****************************************************************************/
UINT32
DtCompileBuffer (
UINT8 *Buffer,
char *StringValue,
DT_FIELD *Field,
UINT32 ByteLength)
{
ACPI_STATUS Status;
char Hex[3];
UINT64 Value;
UINT32 i;
UINT32 Count;
/* Allow several different types of value separators */
StringValue = DtNormalizeBuffer (StringValue, &Count);
Hex[2] = 0;
for (i = 0; i < Count; i++)
{
/* Each element of StringValue is three chars */
Hex[0] = StringValue[(3 * i)];
Hex[1] = StringValue[(3 * i) + 1];
/* Convert one hex byte */
Value = 0;
Status = DtStrtoul64 (Hex, &Value);
if (ACPI_FAILURE (Status))
{
DtError (ASL_ERROR, ASL_MSG_BUFFER_ELEMENT, Field, MsgBuffer);
return (ByteLength - Count);
}
Buffer[i] = (UINT8) Value;
}
ACPI_FREE (StringValue);
return (ByteLength - Count);
}
/******************************************************************************
*
* FUNCTION: DtCompileFlag
*
* PARAMETERS: Buffer - Output buffer
* Field - Field to be compiled
* Info - Flag info
*
* RETURN:
*
* DESCRIPTION: Compile a flag
*
*****************************************************************************/
void
DtCompileFlag (
UINT8 *Buffer,
DT_FIELD *Field,
ACPI_DMTABLE_INFO *Info)
{
UINT64 Value = 0;
UINT32 BitLength = 1;
UINT8 BitPosition = 0;
ACPI_STATUS Status;
Status = DtStrtoul64 (Field->Value, &Value);
if (ACPI_FAILURE (Status))
{
DtError (ASL_ERROR, ASL_MSG_INVALID_HEX_INTEGER, Field, NULL);
}
switch (Info->Opcode)
{
case ACPI_DMT_FLAG0:
case ACPI_DMT_FLAG1:
case ACPI_DMT_FLAG2:
case ACPI_DMT_FLAG3:
case ACPI_DMT_FLAG4:
case ACPI_DMT_FLAG5:
case ACPI_DMT_FLAG6:
case ACPI_DMT_FLAG7:
BitPosition = Info->Opcode;
BitLength = 1;
break;
case ACPI_DMT_FLAGS0:
BitPosition = 0;
BitLength = 2;
break;
case ACPI_DMT_FLAGS2:
BitPosition = 2;
BitLength = 2;
break;
default:
DtFatal (ASL_MSG_COMPILER_INTERNAL, Field, "Invalid flag opcode");
break;
}
/* Check range of the input flag value */
if (Value >= ((UINT64) 1 << BitLength))
{
sprintf (MsgBuffer, "Maximum %u bit", BitLength);
DtError (ASL_ERROR, ASL_MSG_FLAG_VALUE, Field, MsgBuffer);
Value = 0;
}
*Buffer |= (UINT8) (Value << BitPosition);
}
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