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/******************************************************************************
*
* Module Name: dtutils.c - Utility routines for the data table compiler
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2011, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*/
#define __DTUTILS_C__
#include <contrib/dev/acpica/compiler/aslcompiler.h>
#include <contrib/dev/acpica/compiler/dtcompiler.h>
#include <contrib/dev/acpica/include/actables.h>
#define _COMPONENT DT_COMPILER
ACPI_MODULE_NAME ("dtutils")
/* Local prototypes */
static void
DtSum (
DT_SUBTABLE *Subtable,
void *Context,
void *ReturnValue);
/******************************************************************************
*
* FUNCTION: DtError
*
* PARAMETERS: Level - Seriousness (Warning/error, etc.)
* MessageId - Index into global message buffer
* Op - Parse node where error happened
* ExtraMessage - additional error message
*
* RETURN: None
*
* DESCRIPTION: Common error interface for data table compiler
*
*****************************************************************************/
void
DtError (
UINT8 Level,
UINT8 MessageId,
DT_FIELD *FieldObject,
char *ExtraMessage)
{
switch (Level)
{
case ASL_WARNING2:
case ASL_WARNING3:
if (Gbl_WarningLevel < Level)
{
return;
}
break;
default:
break;
}
if (FieldObject)
{
AslCommonError (Level, MessageId,
FieldObject->Line,
FieldObject->Line,
FieldObject->ByteOffset,
FieldObject->Column,
Gbl_Files[ASL_FILE_INPUT].Filename, ExtraMessage);
}
else
{
AslCommonError (Level, MessageId, 0,
0, 0, 0, 0, ExtraMessage);
}
}
/******************************************************************************
*
* FUNCTION: DtNameError
*
* PARAMETERS: Level - Seriousness (Warning/error, etc.)
* MessageId - Index into global message buffer
* Op - Parse node where error happened
* ExtraMessage - additional error message
*
* RETURN: None
*
* DESCRIPTION: Error interface for named objects
*
*****************************************************************************/
void
DtNameError (
UINT8 Level,
UINT8 MessageId,
DT_FIELD *FieldObject,
char *ExtraMessage)
{
switch (Level)
{
case ASL_WARNING2:
case ASL_WARNING3:
if (Gbl_WarningLevel < Level)
{
return;
}
break;
default:
break;
}
if (FieldObject)
{
AslCommonError (Level, MessageId,
FieldObject->Line,
FieldObject->Line,
FieldObject->ByteOffset,
FieldObject->NameColumn,
Gbl_Files[ASL_FILE_INPUT].Filename, ExtraMessage);
}
else
{
AslCommonError (Level, MessageId, 0,
0, 0, 0, 0, ExtraMessage);
}
}
/*******************************************************************************
*
* FUNCTION: DtFatal
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Dump the error log and abort the compiler. Used for serious
* compile or I/O errors
*
******************************************************************************/
void
DtFatal (
UINT8 MessageId,
DT_FIELD *FieldObject,
char *ExtraMessage)
{
DtError (ASL_ERROR, MessageId, FieldObject, ExtraMessage);
/*
* TBD: remove this entire function, DtFatal
*
* We cannot abort the compiler on error, because we may be compiling a
* list of files. We must move on to the next file.
*/
#ifdef __OBSOLETE
CmCleanupAndExit ();
exit (1);
#endif
}
/******************************************************************************
*
* FUNCTION: DtStrtoul64
*
* PARAMETERS: String - Null terminated string
* ReturnInteger - Where the converted integer is returned
*
* RETURN: Status
*
* DESCRIPTION: Simple conversion of a string hex integer constant to unsigned
* value. Assumes no leading "0x" for the constant.
*
* Portability note: The reason this function exists is because a 64-bit
* sscanf is not available in all environments.
*
*****************************************************************************/
ACPI_STATUS
DtStrtoul64 (
char *String,
UINT64 *ReturnInteger)
{
char *ThisChar = String;
UINT32 ThisDigit;
UINT64 ReturnValue = 0;
int DigitCount = 0;
/* Skip over any white space in the buffer */
while ((*ThisChar == ' ') || (*ThisChar == '\t'))
{
ThisChar++;
}
/* Skip leading zeros */
while ((*ThisChar) == '0')
{
ThisChar++;
}
/* Convert character-by-character */
while (*ThisChar)
{
if (ACPI_IS_DIGIT (*ThisChar))
{
/* Convert ASCII 0-9 to Decimal value */
ThisDigit = ((UINT8) *ThisChar) - '0';
}
else /* Letter */
{
ThisDigit = (UINT32) ACPI_TOUPPER (*ThisChar);
if (!ACPI_IS_XDIGIT ((char) ThisDigit))
{
/* Not A-F */
return (AE_BAD_CHARACTER);
}
/* Convert ASCII Hex char (A-F) to value */
ThisDigit = (ThisDigit - 'A') + 10;
}
/* Insert the 4-bit hex digit */
ReturnValue <<= 4;
ReturnValue += ThisDigit;
ThisChar++;
DigitCount++;
if (DigitCount > 16)
{
/* Value is too large (> 64 bits/8 bytes/16 hex digits) */
return (AE_LIMIT);
}
}
*ReturnInteger = ReturnValue;
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: DtGetFileSize
*
* PARAMETERS: Handle - Open file handler
*
* RETURN: Current file size
*
* DESCRIPTION: Get the current size of a file. Seek to the EOF and get the
* offset. Seek back to the original location.
*
*****************************************************************************/
UINT32
DtGetFileSize (
FILE *Handle)
{
int CurrentOffset;
int LastOffset;
CurrentOffset = ftell (Handle);
fseek (Handle, 0, SEEK_END);
LastOffset = ftell (Handle);
fseek (Handle, CurrentOffset, SEEK_SET);
return ((UINT32) LastOffset);
}
/******************************************************************************
*
* FUNCTION: DtGetFieldValue
*
* PARAMETERS: Field - Current field list pointer
*
* RETURN: Field value
*
* DESCRIPTION: Get field value
*
*****************************************************************************/
char *
DtGetFieldValue (
DT_FIELD *Field)
{
if (!Field)
{
return (NULL);
}
return (Field->Value);
}
/******************************************************************************
*
* FUNCTION: DtGetFieldType
*
* PARAMETERS: Info - Data table info
*
* RETURN: Field type
*
* DESCRIPTION: Get field type
*
*****************************************************************************/
UINT8
DtGetFieldType (
ACPI_DMTABLE_INFO *Info)
{
UINT8 Type;
/* DT_FLAG means that this is the start of a block of flag bits */
/* TBD - we can make these a separate opcode later */
if (Info->Flags & DT_FLAG)
{
return (DT_FIELD_TYPE_FLAGS_INTEGER);
}
/* Type is based upon the opcode for this field in the info table */
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:
case ACPI_DMT_FLAGS0:
case ACPI_DMT_FLAGS2:
Type = DT_FIELD_TYPE_FLAG;
break;
case ACPI_DMT_NAME4:
case ACPI_DMT_SIG:
case ACPI_DMT_NAME6:
case ACPI_DMT_NAME8:
case ACPI_DMT_STRING:
Type = DT_FIELD_TYPE_STRING;
break;
case ACPI_DMT_BUFFER:
case ACPI_DMT_BUF7:
case ACPI_DMT_BUF16:
case ACPI_DMT_BUF128:
case ACPI_DMT_PCI_PATH:
Type = DT_FIELD_TYPE_BUFFER;
break;
case ACPI_DMT_GAS:
case ACPI_DMT_HESTNTFY:
Type = DT_FIELD_TYPE_INLINE_SUBTABLE;
break;
case ACPI_DMT_UNICODE:
Type = DT_FIELD_TYPE_UNICODE;
break;
case ACPI_DMT_UUID:
Type = DT_FIELD_TYPE_UUID;
break;
case ACPI_DMT_DEVICE_PATH:
Type = DT_FIELD_TYPE_DEVICE_PATH;
break;
case ACPI_DMT_LABEL:
Type = DT_FIELD_TYPE_LABEL;
break;
default:
Type = DT_FIELD_TYPE_INTEGER;
break;
}
return (Type);
}
/******************************************************************************
*
* FUNCTION: DtGetBufferLength
*
* PARAMETERS: Buffer - List of integers,
* for example "10 3A 4F 2E"
*
* RETURN: Count of integer
*
* DESCRIPTION: Get length of bytes needed to store the integers
*
*****************************************************************************/
UINT32
DtGetBufferLength (
char *Buffer)
{
UINT32 ByteLength = 0;
while (*Buffer)
{
if (*Buffer == ' ')
{
ByteLength++;
while (*Buffer == ' ')
{
Buffer++;
}
}
Buffer++;
}
return (++ByteLength);
}
/******************************************************************************
*
* FUNCTION: DtGetFieldLength
*
* PARAMETERS: Field - Current field
* Info - Data table info
*
* RETURN: Field length
*
* DESCRIPTION: Get length of bytes needed to compile the field
*
* Note: This function must remain in sync with AcpiDmDumpTable.
*
*****************************************************************************/
UINT32
DtGetFieldLength (
DT_FIELD *Field,
ACPI_DMTABLE_INFO *Info)
{
UINT32 ByteLength = 0;
char *Value;
/* Length is based upon the opcode for this field in the info table */
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:
case ACPI_DMT_FLAGS0:
case ACPI_DMT_FLAGS2:
case ACPI_DMT_LABEL:
ByteLength = 0;
break;
case ACPI_DMT_UINT8:
case ACPI_DMT_CHKSUM:
case ACPI_DMT_SPACEID:
case ACPI_DMT_ACCWIDTH:
case ACPI_DMT_IVRS:
case ACPI_DMT_MADT:
case ACPI_DMT_SRAT:
case ACPI_DMT_ASF:
case ACPI_DMT_HESTNTYP:
case ACPI_DMT_FADTPM:
case ACPI_DMT_EINJACT:
case ACPI_DMT_EINJINST:
case ACPI_DMT_ERSTACT:
case ACPI_DMT_ERSTINST:
ByteLength = 1;
break;
case ACPI_DMT_UINT16:
case ACPI_DMT_DMAR:
case ACPI_DMT_HEST:
case ACPI_DMT_PCI_PATH:
ByteLength = 2;
break;
case ACPI_DMT_UINT24:
ByteLength = 3;
break;
case ACPI_DMT_UINT32:
case ACPI_DMT_NAME4:
case ACPI_DMT_SLIC:
case ACPI_DMT_SIG:
ByteLength = 4;
break;
case ACPI_DMT_NAME6:
ByteLength = 6;
break;
case ACPI_DMT_UINT56:
case ACPI_DMT_BUF7:
ByteLength = 7;
break;
case ACPI_DMT_UINT64:
case ACPI_DMT_NAME8:
ByteLength = 8;
break;
case ACPI_DMT_STRING:
Value = DtGetFieldValue (Field);
if (Value)
{
ByteLength = ACPI_STRLEN (Value) + 1;
}
else
{ /* At this point, this is a fatal error */
sprintf (MsgBuffer, "Expected \"%s\"", Info->Name);
DtFatal (ASL_MSG_COMPILER_INTERNAL, NULL, MsgBuffer);
return (0);
}
break;
case ACPI_DMT_GAS:
ByteLength = sizeof (ACPI_GENERIC_ADDRESS);
break;
case ACPI_DMT_HESTNTFY:
ByteLength = sizeof (ACPI_HEST_NOTIFY);
break;
case ACPI_DMT_BUFFER:
Value = DtGetFieldValue (Field);
if (Value)
{
ByteLength = DtGetBufferLength (Value);
}
else
{ /* At this point, this is a fatal error */
sprintf (MsgBuffer, "Expected \"%s\"", Info->Name);
DtFatal (ASL_MSG_COMPILER_INTERNAL, NULL, MsgBuffer);
return (0);
}
break;
case ACPI_DMT_BUF16:
case ACPI_DMT_UUID:
ByteLength = 16;
break;
case ACPI_DMT_BUF128:
ByteLength = 128;
break;
case ACPI_DMT_UNICODE:
Value = DtGetFieldValue (Field);
/* TBD: error if Value is NULL? (as below?) */
ByteLength = (ACPI_STRLEN (Value) + 1) * sizeof(UINT16);
break;
default:
DtFatal (ASL_MSG_COMPILER_INTERNAL, Field, "Invalid table opcode");
return (0);
}
return (ByteLength);
}
/******************************************************************************
*
* FUNCTION: DtSum
*
* PARAMETERS: DT_WALK_CALLBACK:
* Subtable - Subtable
* Context - Unused
* ReturnValue - Store the checksum of subtable
*
* RETURN: Status
*
* DESCRIPTION: Get the checksum of subtable
*
*****************************************************************************/
static void
DtSum (
DT_SUBTABLE *Subtable,
void *Context,
void *ReturnValue)
{
UINT8 Checksum;
UINT8 *Sum = ReturnValue;
Checksum = AcpiTbChecksum (Subtable->Buffer, Subtable->Length);
*Sum = (UINT8) (*Sum + Checksum);
}
/******************************************************************************
*
* FUNCTION: DtSetTableChecksum
*
* PARAMETERS: ChecksumPointer - Where to return the checksum
*
* RETURN: None
*
* DESCRIPTION: Set checksum of the whole data table into the checksum field
*
*****************************************************************************/
void
DtSetTableChecksum (
UINT8 *ChecksumPointer)
{
UINT8 Checksum = 0;
UINT8 OldSum;
DtWalkTableTree (Gbl_RootTable, DtSum, NULL, &Checksum);
OldSum = *ChecksumPointer;
Checksum = (UINT8) (Checksum - OldSum);
/* Compute the final checksum */
Checksum = (UINT8) (0 - Checksum);
*ChecksumPointer = Checksum;
}
/******************************************************************************
*
* FUNCTION: DtSetTableLength
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Walk the subtables and set all the length fields
*
*****************************************************************************/
void
DtSetTableLength (
void)
{
DT_SUBTABLE *ParentTable;
DT_SUBTABLE *ChildTable;
ParentTable = Gbl_RootTable;
ChildTable = NULL;
if (!ParentTable)
{
return;
}
DtSetSubtableLength (ParentTable);
while (1)
{
ChildTable = DtGetNextSubtable (ParentTable, ChildTable);
if (ChildTable)
{
if (ChildTable->LengthField)
{
DtSetSubtableLength (ChildTable);
}
if (ChildTable->Child)
{
ParentTable = ChildTable;
ChildTable = NULL;
}
else
{
ParentTable->TotalLength += ChildTable->TotalLength;
if (ParentTable->LengthField)
{
DtSetSubtableLength (ParentTable);
}
}
}
else
{
ChildTable = ParentTable;
if (ChildTable == Gbl_RootTable)
{
break;
}
ParentTable = DtGetParentSubtable (ParentTable);
ParentTable->TotalLength += ChildTable->TotalLength;
if (ParentTable->LengthField)
{
DtSetSubtableLength (ParentTable);
}
}
}
}
/******************************************************************************
*
* FUNCTION: DtWalkTableTree
*
* PARAMETERS: StartTable - Subtable in the tree where walking begins
* UserFunction - Called during the walk
* Context - Passed to user function
* ReturnValue - The return value of UserFunction
*
* RETURN: None
*
* DESCRIPTION: Performs a depth-first walk of the subtable tree
*
*****************************************************************************/
void
DtWalkTableTree (
DT_SUBTABLE *StartTable,
DT_WALK_CALLBACK UserFunction,
void *Context,
void *ReturnValue)
{
DT_SUBTABLE *ParentTable;
DT_SUBTABLE *ChildTable;
ParentTable = StartTable;
ChildTable = NULL;
if (!ParentTable)
{
return;
}
UserFunction (ParentTable, Context, ReturnValue);
while (1)
{
ChildTable = DtGetNextSubtable (ParentTable, ChildTable);
if (ChildTable)
{
UserFunction (ChildTable, Context, ReturnValue);
if (ChildTable->Child)
{
ParentTable = ChildTable;
ChildTable = NULL;
}
}
else
{
ChildTable = ParentTable;
if (ChildTable == Gbl_RootTable)
{
break;
}
ParentTable = DtGetParentSubtable (ParentTable);
if (ChildTable->Peer == StartTable)
{
break;
}
}
}
}
/******************************************************************************
*
* FUNCTION: DtFreeFieldList
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Free the field list
*
*****************************************************************************/
void
DtFreeFieldList (
void)
{
DT_FIELD *Field = Gbl_FieldList;
DT_FIELD *NextField;
/* Walk and free entire field list */
while (Field)
{
NextField = Field->Next; /* Save link */
if (!(Field->Flags & DT_FIELD_NOT_ALLOCATED))
{
ACPI_FREE (Field->Name);
ACPI_FREE (Field->Value);
}
ACPI_FREE (Field);
Field = NextField;
}
}