ACPI_STATUS
DtCompilePadding (
UINT32 Length,
DT_SUBTABLE **RetSubtable)
{
DT_SUBTABLE *Subtable;
/* UINT8 *Buffer; */
char *String;
Subtable = UtSubtableCacheCalloc ();
if (Length > 0)
{
String = UtLocalCacheCalloc (Length);
Subtable->Buffer = ACPI_CAST_PTR (UINT8, String);
}
Subtable->Length = Length;
Subtable->TotalLength = Length;
/* Buffer = Subtable->Buffer; */
*RetSubtable = Subtable;
return (AE_OK);
}
void
DtCreateSubtable (
UINT8 *Buffer,
UINT32 Length,
DT_SUBTABLE **RetSubtable)
{
DT_SUBTABLE *Subtable;
char *String;
Subtable = UtSubtableCacheCalloc ();
/* Create a new buffer for the subtable data */
String = UtStringCacheCalloc (Length);
Subtable->Buffer = ACPI_CAST_PTR (UINT8, String);
memcpy (Subtable->Buffer, Buffer, Length);
Subtable->Length = Length;
Subtable->TotalLength = Length;
*RetSubtable = Subtable;
}
ACPI_STATUS
DtCompileTable (
DT_FIELD **Field,
ACPI_DMTABLE_INFO *Info,
DT_SUBTABLE **RetSubtable,
BOOLEAN Required)
{
DT_FIELD *LocalField;
UINT32 Length;
DT_SUBTABLE *Subtable;
DT_SUBTABLE *InlineSubtable;
UINT32 FieldLength = 0;
UINT8 FieldType;
UINT8 *Buffer;
UINT8 *FlagBuffer = NULL;
UINT32 CurrentFlagByteOffset = 0;
ACPI_STATUS Status;
if (!Field || !*Field)
{
return (AE_BAD_PARAMETER);
}
/* Ignore optional subtable if name does not match */
if ((Info->Flags & DT_OPTIONAL) &&
ACPI_STRCMP ((*Field)->Name, Info->Name))
{
*RetSubtable = NULL;
return (AE_OK);
}
Length = DtGetSubtableLength (*Field, Info);
if (Length == ASL_EOF)
{
return (AE_ERROR);
}
Subtable = UtSubtableCacheCalloc ();
if (Length > 0)
{
Subtable->Buffer = ACPI_CAST_PTR (UINT8, UtStringCacheCalloc (Length));
}
Subtable->Length = Length;
Subtable->TotalLength = Length;
Buffer = Subtable->Buffer;
LocalField = *Field;
/*
* Main loop walks the info table for this ACPI table or subtable
*/
for (; Info->Name; Info++)
{
if (Info->Opcode == ACPI_DMT_EXTRA_TEXT)
{
continue;
}
if (!LocalField)
{
sprintf (MsgBuffer, "Found NULL field - Field name \"%s\" needed",
Info->Name);
DtFatal (ASL_MSG_COMPILER_INTERNAL, NULL, MsgBuffer);
Status = AE_BAD_DATA;
goto Error;
}
/* Maintain table offsets */
LocalField->TableOffset = Gbl_CurrentTableOffset;
FieldLength = DtGetFieldLength (LocalField, Info);
Gbl_CurrentTableOffset += FieldLength;
FieldType = DtGetFieldType (Info);
Gbl_InputFieldCount++;
switch (FieldType)
{
case DT_FIELD_TYPE_FLAGS_INTEGER:
/*
* Start of the definition of a flags field.
* This master flags integer starts at value zero, in preparation
* to compile and insert the flag fields from the individual bits
*/
LocalField = LocalField->Next;
*Field = LocalField;
FlagBuffer = Buffer;
CurrentFlagByteOffset = Info->Offset;
break;
case DT_FIELD_TYPE_FLAG:
/* Individual Flag field, can be multiple bits */
if (FlagBuffer)
{
/*
* We must increment the FlagBuffer when we have crossed
* into the next flags byte within the flags field
* of type DT_FIELD_TYPE_FLAGS_INTEGER.
*/
FlagBuffer += (Info->Offset - CurrentFlagByteOffset);
CurrentFlagByteOffset = Info->Offset;
DtCompileFlag (FlagBuffer, LocalField, Info);
}
else
{
/* TBD - this is an internal error */
}
LocalField = LocalField->Next;
*Field = LocalField;
break;
case DT_FIELD_TYPE_INLINE_SUBTABLE:
/*
* Recursion (one level max): compile GAS (Generic Address)
* or Notify in-line subtable
*/
*Field = LocalField;
if (Info->Opcode == ACPI_DMT_GAS)
{
Status = DtCompileTable (Field, AcpiDmTableInfoGas,
&InlineSubtable, TRUE);
}
else
{
Status = DtCompileTable (Field, AcpiDmTableInfoHestNotify,
&InlineSubtable, TRUE);
}
if (ACPI_FAILURE (Status))
{
goto Error;
}
DtSetSubtableLength (InlineSubtable);
ACPI_MEMCPY (Buffer, InlineSubtable->Buffer, FieldLength);
LocalField = *Field;
break;
case DT_FIELD_TYPE_LABEL:
DtWriteFieldToListing (Buffer, LocalField, 0);
LocalField = LocalField->Next;
break;
default:
/* Normal case for most field types (Integer, String, etc.) */
DtCompileOneField (Buffer, LocalField,
FieldLength, FieldType, Info->Flags);
DtWriteFieldToListing (Buffer, LocalField, FieldLength);
LocalField = LocalField->Next;
if (Info->Flags & DT_LENGTH)
{
/* Field is an Integer that will contain a subtable length */
Subtable->LengthField = Buffer;
Subtable->SizeOfLengthField = FieldLength;
}
break;
}
Buffer += FieldLength;
}
*Field = LocalField;
*RetSubtable = Subtable;
return (AE_OK);
Error:
ACPI_FREE (Subtable->Buffer);
ACPI_FREE (Subtable);
return (Status);
}
