static ACPI_STATUS
AcpiUtTranslateOneCid (
ACPI_OPERAND_OBJECT *ObjDesc,
ACPI_COMPATIBLE_ID *OneCid)
{
switch (ObjDesc->Common.Type)
{
case ACPI_TYPE_INTEGER:
/* Convert the Numeric CID to string */
AcpiExEisaIdToString ((UINT32) ObjDesc->Integer.Value, OneCid->Value);
return (AE_OK);
case ACPI_TYPE_STRING:
if (ObjDesc->String.Length > ACPI_MAX_CID_LENGTH)
{
return (AE_AML_STRING_LIMIT);
}
/* Copy the String CID from the returned object */
AcpiUtCopyIdString (OneCid->Value, ObjDesc->String.Pointer,
ACPI_MAX_CID_LENGTH);
return (AE_OK);
default:
return (AE_TYPE);
}
}
ACPI_STATUS
AcpiUtExecute_UID (
ACPI_NAMESPACE_NODE *DeviceNode,
ACPI_DEVICE_ID *Uid)
{
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_STATUS Status;
ACPI_FUNCTION_TRACE (UtExecute_UID);
Status = AcpiUtEvaluateObject (DeviceNode, METHOD_NAME__UID,
ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING, &ObjDesc);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
if (ObjDesc->Common.Type == ACPI_TYPE_INTEGER)
{
/* Convert the Numeric UID to string */
AcpiExUnsignedIntegerToString (ObjDesc->Integer.Value, Uid->Value);
}
else
{
/* Copy the String UID from the returned object */
AcpiUtCopyIdString (Uid->Value, ObjDesc->String.Pointer,
sizeof (Uid->Value));
}
/* On exit, we must delete the return object */
AcpiUtRemoveReference (ObjDesc);
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiUtExecute_CID (
ACPI_NAMESPACE_NODE *DeviceNode,
ACPI_DEVICE_ID_LIST **ReturnCidList)
{
ACPI_OPERAND_OBJECT **CidObjects;
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_DEVICE_ID_LIST *CidList;
char *NextIdString;
UINT32 StringAreaSize;
UINT32 Length;
UINT32 CidListSize;
ACPI_STATUS Status;
UINT32 Count;
UINT32 i;
ACPI_FUNCTION_TRACE (UtExecute_CID);
/* Evaluate the _CID method for this device */
Status = AcpiUtEvaluateObject (DeviceNode, METHOD_NAME__CID,
ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING | ACPI_BTYPE_PACKAGE,
&ObjDesc);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/*
* Get the count and size of the returned _CIDs. _CID can return either
* a Package of Integers/Strings or a single Integer or String.
* Note: This section also validates that all CID elements are of the
* correct type (Integer or String).
*/
if (ObjDesc->Common.Type == ACPI_TYPE_PACKAGE)
{
Count = ObjDesc->Package.Count;
CidObjects = ObjDesc->Package.Elements;
}
else /* Single Integer or String CID */
{
Count = 1;
CidObjects = &ObjDesc;
}
StringAreaSize = 0;
for (i = 0; i < Count; i++)
{
/* String lengths include null terminator */
switch (CidObjects[i]->Common.Type)
{
case ACPI_TYPE_INTEGER:
StringAreaSize += ACPI_EISAID_STRING_SIZE;
break;
case ACPI_TYPE_STRING:
StringAreaSize += CidObjects[i]->String.Length + 1;
break;
default:
Status = AE_TYPE;
goto Cleanup;
}
}
/*
* Now that we know the length of the CIDs, allocate return buffer:
* 1) Size of the base structure +
* 2) Size of the CID DEVICE_ID array +
* 3) Size of the actual CID strings
*/
CidListSize = sizeof (ACPI_DEVICE_ID_LIST) +
((Count - 1) * sizeof (ACPI_DEVICE_ID)) +
StringAreaSize;
CidList = ACPI_ALLOCATE_ZEROED (CidListSize);
if (!CidList)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
/* Area for CID strings starts after the CID DEVICE_ID array */
NextIdString = ACPI_CAST_PTR (char, CidList->Ids) +
((ACPI_SIZE) Count * sizeof (ACPI_DEVICE_ID));
/* Copy/convert the CIDs to the return buffer */
for (i = 0; i < Count; i++)
{
if (CidObjects[i]->Common.Type == ACPI_TYPE_INTEGER)
{
/* Convert the Integer (EISAID) CID to a string */
AcpiExEisaIdToString (NextIdString, CidObjects[i]->Integer.Value);
Length = ACPI_EISAID_STRING_SIZE;
}
else /* ACPI_TYPE_STRING */
{
/* Copy the String CID from the returned object */
AcpiUtCopyIdString (NextIdString, CidObjects[i]->String.Pointer);
Length = CidObjects[i]->String.Length + 1;
}
CidList->Ids[i].String = NextIdString;
CidList->Ids[i].Length = Length;
NextIdString += Length;
}
/* Finish the CID list */
CidList->Count = Count;
CidList->ListSize = CidListSize;
*ReturnCidList = CidList;
Cleanup:
/* On exit, we must delete the _CID return object */
AcpiUtRemoveReference (ObjDesc);
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiUtExecute_UID (
ACPI_NAMESPACE_NODE *DeviceNode,
ACPI_DEVICE_ID **ReturnId)
{
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_DEVICE_ID *Uid;
UINT32 Length;
ACPI_STATUS Status;
ACPI_FUNCTION_TRACE (UtExecute_UID);
Status = AcpiUtEvaluateObject (DeviceNode, METHOD_NAME__UID,
ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING, &ObjDesc);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Get the size of the String to be returned, includes null terminator */
if (ObjDesc->Common.Type == ACPI_TYPE_INTEGER)
{
Length = ACPI_MAX64_DECIMAL_DIGITS + 1;
}
else
{
Length = ObjDesc->String.Length + 1;
}
/* Allocate a buffer for the UID */
Uid = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_DEVICE_ID) + (ACPI_SIZE) Length);
if (!Uid)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
/* Area for the string starts after DEVICE_ID struct */
Uid->String = ACPI_ADD_PTR (char, Uid, sizeof (ACPI_DEVICE_ID));
/* Convert an Integer to string, or just copy an existing string */
if (ObjDesc->Common.Type == ACPI_TYPE_INTEGER)
{
AcpiExIntegerToString (Uid->String, ObjDesc->Integer.Value);
}
else
{
AcpiUtCopyIdString (Uid->String, ObjDesc->String.Pointer);
}
Uid->Length = Length;
*ReturnId = Uid;
Cleanup:
/* On exit, we must delete the return object */
AcpiUtRemoveReference (ObjDesc);
return_ACPI_STATUS (Status);
}
