UINT32
DtCompileBuffer (
UINT8 *Buffer,
char *StringValue,
DT_FIELD *Field,
UINT32 ByteLength)
{
char *Substring;
ACPI_STATUS Status;
UINT32 Count;
UINT32 i;
/* Allow several different types of value separators */
StringValue = DtNormalizeBuffer (StringValue, &Count);
Substring = StringValue;
/* Each element of StringValue is now three chars (2 hex + 1 space) */
for (i = 0; i < Count; i++, Substring += 3)
{
/* Check for byte value too long */
if (*(&Substring[2]) &&
(*(&Substring[2]) != ' '))
{
DtError (ASL_ERROR, ASL_MSG_BUFFER_ELEMENT, Field, Substring);
goto Exit;
}
/* Convert two ASCII characters to one hex byte */
Status = AcpiUtAsciiToHexByte (Substring, &Buffer[i]);
if (ACPI_FAILURE (Status))
{
DtError (ASL_ERROR, ASL_MSG_BUFFER_ELEMENT, Field, Substring);
goto Exit;
}
}
Exit:
ACPI_FREE (StringValue);
return (ByteLength - Count);
}
ACPI_STATUS
AcpiEvMatchGpeMethod (
ACPI_HANDLE ObjHandle,
UINT32 Level,
void *Context,
void **ReturnValue)
{
ACPI_NAMESPACE_NODE *MethodNode = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle);
ACPI_GPE_WALK_INFO *WalkInfo = ACPI_CAST_PTR (ACPI_GPE_WALK_INFO, Context);
ACPI_GPE_EVENT_INFO *GpeEventInfo;
ACPI_STATUS Status;
UINT32 GpeNumber;
UINT8 TempGpeNumber;
char Name[ACPI_NAME_SIZE + 1];
UINT8 Type;
ACPI_FUNCTION_TRACE (EvMatchGpeMethod);
/* Check if requested OwnerId matches this OwnerId */
if ((WalkInfo->ExecuteByOwnerId) &&
(MethodNode->OwnerId != WalkInfo->OwnerId))
{
return_ACPI_STATUS (AE_OK);
}
/*
* Match and decode the _Lxx and _Exx GPE method names
*
* 1) Extract the method name and null terminate it
*/
ACPI_MOVE_32_TO_32 (Name, &MethodNode->Name.Integer);
Name[ACPI_NAME_SIZE] = 0;
/* 2) Name must begin with an underscore */
if (Name[0] != '_')
{
return_ACPI_STATUS (AE_OK); /* Ignore this method */
}
/*
* 3) Edge/Level determination is based on the 2nd character
* of the method name
*/
switch (Name[1])
{
case 'L':
Type = ACPI_GPE_LEVEL_TRIGGERED;
break;
case 'E':
Type = ACPI_GPE_EDGE_TRIGGERED;
break;
default:
/* Unknown method type, just ignore it */
ACPI_DEBUG_PRINT ((ACPI_DB_LOAD,
"Ignoring unknown GPE method type: %s "
"(name not of form _Lxx or _Exx)", Name));
return_ACPI_STATUS (AE_OK);
}
/* 4) The last two characters of the name are the hex GPE Number */
Status = AcpiUtAsciiToHexByte (&Name[2], &TempGpeNumber);
if (ACPI_FAILURE (Status))
{
/* Conversion failed; invalid method, just ignore it */
ACPI_DEBUG_PRINT ((ACPI_DB_LOAD,
"Could not extract GPE number from name: %s "
"(name is not of form _Lxx or _Exx)", Name));
return_ACPI_STATUS (AE_OK);
}
/* Ensure that we have a valid GPE number for this GPE block */
GpeNumber = (UINT32) TempGpeNumber;
GpeEventInfo = AcpiEvLowGetGpeInfo (GpeNumber, WalkInfo->GpeBlock);
if (!GpeEventInfo)
{
/*
* This GpeNumber is not valid for this GPE block, just ignore it.
* However, it may be valid for a different GPE block, since GPE0
* and GPE1 methods both appear under \_GPE.
*/
return_ACPI_STATUS (AE_OK);
}
if ((ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) ==
ACPI_GPE_DISPATCH_HANDLER) ||
(ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) ==
ACPI_GPE_DISPATCH_RAW_HANDLER))
{
/* If there is already a handler, ignore this GPE method */
return_ACPI_STATUS (AE_OK);
}
if (ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) ==
ACPI_GPE_DISPATCH_METHOD)
{
/*
* If there is already a method, ignore this method. But check
* for a type mismatch (if both the _Lxx AND _Exx exist)
*/
if (Type != (GpeEventInfo->Flags & ACPI_GPE_XRUPT_TYPE_MASK))
{
ACPI_ERROR ((AE_INFO,
"For GPE 0x%.2X, found both _L%2.2X and _E%2.2X methods",
GpeNumber, GpeNumber, GpeNumber));
}
return_ACPI_STATUS (AE_OK);
}
/* Disable the GPE in case it's been enabled already. */
(void) AcpiHwLowSetGpe (GpeEventInfo, ACPI_GPE_DISABLE);
/*
* Add the GPE information from above to the GpeEventInfo block for
* use during dispatch of this GPE.
*/
GpeEventInfo->Flags &= ~(ACPI_GPE_DISPATCH_MASK);
GpeEventInfo->Flags |= (UINT8) (Type | ACPI_GPE_DISPATCH_METHOD);
GpeEventInfo->Dispatch.MethodNode = MethodNode;
ACPI_DEBUG_PRINT ((ACPI_DB_LOAD,
"Registered GPE method %s as GPE number 0x%.2X\n",
Name, GpeNumber));
return_ACPI_STATUS (AE_OK);
}
