NATIVE_CHAR *
AcpiNsGetExternalPathname (
ACPI_NAMESPACE_NODE *Node)
{
NATIVE_CHAR *NameBuffer;
ACPI_SIZE Size;
ACPI_FUNCTION_TRACE_PTR ("NsGetExternalPathname", Node);
/* Calculate required buffer size based on depth below root */
Size = AcpiNsGetPathnameLength (Node);
/* Allocate a buffer to be returned to caller */
NameBuffer = ACPI_MEM_CALLOCATE (Size);
if (!NameBuffer)
{
ACPI_REPORT_ERROR (("NsGetTablePathname: allocation failure\n"));
return_PTR (NULL);
}
/* Build the path in the allocated buffer */
AcpiNsBuildExternalPath (Node, Size, NameBuffer);
return_PTR (NameBuffer);
}
ACPI_STATUS
AcpiNsHandleToPathname (
ACPI_HANDLE TargetHandle,
ACPI_BUFFER *Buffer)
{
ACPI_STATUS Status;
ACPI_NAMESPACE_NODE *Node;
ACPI_SIZE RequiredSize;
ACPI_FUNCTION_TRACE_PTR (NsHandleToPathname, TargetHandle);
Node = AcpiNsValidateHandle (TargetHandle);
if (!Node)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/* Determine size required for the caller buffer */
RequiredSize = AcpiNsGetPathnameLength (Node);
if (!RequiredSize)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/* Validate/Allocate/Clear caller buffer */
Status = AcpiUtInitializeBuffer (Buffer, RequiredSize);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Build the path in the caller buffer */
Status = AcpiNsBuildExternalPath (Node, RequiredSize, Buffer->Pointer);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "%s [%X]\n",
(char *) Buffer->Pointer, (UINT32) RequiredSize));
return_ACPI_STATUS (AE_OK);
}
char *
AcpiNsGetExternalPathname (
ACPI_NAMESPACE_NODE *Node)
{
ACPI_STATUS Status;
char *NameBuffer;
ACPI_SIZE Size;
ACPI_FUNCTION_TRACE_PTR (NsGetExternalPathname, Node);
/* Calculate required buffer size based on depth below root */
Size = AcpiNsGetPathnameLength (Node);
if (!Size)
{
return_PTR (NULL);
}
/* Allocate a buffer to be returned to caller */
NameBuffer = ACPI_ALLOCATE_ZEROED (Size);
if (!NameBuffer)
{
ACPI_ERROR ((AE_INFO, "Could not allocate %u bytes", (UINT32) Size));
return_PTR (NULL);
}
/* Build the path in the allocated buffer */
Status = AcpiNsBuildExternalPath (Node, Size, NameBuffer);
if (ACPI_FAILURE (Status))
{
ACPI_FREE (NameBuffer);
return_PTR (NULL);
}
return_PTR (NameBuffer);
}
static char *
AcpiGetTagPathname (
ACPI_NAMESPACE_NODE *BufferNode,
ACPI_NAMESPACE_NODE *ResourceNode,
UINT32 BitIndex)
{
ACPI_STATUS Status;
UINT32 ResourceBitIndex;
UINT8 ResourceTableIndex;
ACPI_SIZE RequiredSize;
char *Pathname;
AML_RESOURCE *Aml;
ACPI_PARSE_OBJECT *Op;
char *InternalPath;
char *Tag;
/* Get the Op that contains the actual buffer data */
Op = BufferNode->Op->Common.Value.Arg;
Op = Op->Common.Next;
if (!Op)
{
return (NULL);
}
/* Get the individual resource descriptor and validate it */
Aml = ACPI_CAST_PTR (AML_RESOURCE,
&Op->Named.Data[ResourceNode->Value]);
Status = AcpiUtValidateResource (Aml, &ResourceTableIndex);
if (ACPI_FAILURE (Status))
{
return (NULL);
}
/* Get offset into this descriptor (from offset into entire buffer) */
ResourceBitIndex = BitIndex - ACPI_MUL_8 (ResourceNode->Value);
/* Get the tag associated with this resource descriptor and offset */
Tag = AcpiDmGetResourceTag (ResourceBitIndex, Aml, ResourceTableIndex);
if (!Tag)
{
return (NULL);
}
/*
* Now that we know that we have a reference that can be converted to a
* symbol, change the name of the resource to a unique name.
*/
AcpiDmUpdateResourceName (ResourceNode);
/* Get the full pathname to the parent buffer */
RequiredSize = AcpiNsGetPathnameLength (BufferNode);
if (!RequiredSize)
{
return (NULL);
}
Pathname = ACPI_ALLOCATE_ZEROED (RequiredSize + ACPI_PATH_SEGMENT_LENGTH);
if (!Pathname)
{
return (NULL);
}
Status = AcpiNsBuildExternalPath (BufferNode, RequiredSize, Pathname);
if (ACPI_FAILURE (Status))
{
return (NULL);
}
/*
* Create the full path to the resource and tag by: remove the buffer name,
* append the resource descriptor name, append a dot, append the tag name.
*
* TBD: Always using the full path is a bit brute force, the path can be
* often be optimized with carats (if the original buffer namepath is a
* single nameseg). This doesn't really matter, because these paths do not
* end up in the final compiled AML, it's just an appearance issue for the
* disassembled code.
*/
Pathname[ACPI_STRLEN (Pathname) - ACPI_NAME_SIZE] = 0;
ACPI_STRNCAT (Pathname, ResourceNode->Name.Ascii, ACPI_NAME_SIZE);
ACPI_STRCAT (Pathname, ".");
ACPI_STRNCAT (Pathname, Tag, ACPI_NAME_SIZE);
/* Internalize the namepath to AML format */
AcpiNsInternalizeName (Pathname, &InternalPath);
ACPI_FREE (Pathname);
return (InternalPath);
}
ACPI_STATUS
AcpiRsGetPciRoutingTableLength (
ACPI_OPERAND_OBJECT *PackageObject,
ACPI_SIZE *BufferSizeNeeded)
{
UINT32 NumberOfElements;
ACPI_SIZE TempSizeNeeded = 0;
ACPI_OPERAND_OBJECT **TopObjectList;
UINT32 Index;
ACPI_OPERAND_OBJECT *PackageElement;
ACPI_OPERAND_OBJECT **SubObjectList;
BOOLEAN NameFound;
UINT32 TableIndex;
ACPI_FUNCTION_TRACE (RsGetPciRoutingTableLength);
NumberOfElements = PackageObject->Package.Count;
/*
* Calculate the size of the return buffer.
* The base size is the number of elements * the sizes of the
* structures. Additional space for the strings is added below.
* The minus one is to subtract the size of the UINT8 Source[1]
* member because it is added below.
*
* But each PRT_ENTRY structure has a pointer to a string and
* the size of that string must be found.
*/
TopObjectList = PackageObject->Package.Elements;
for (Index = 0; Index < NumberOfElements; Index++)
{
/* Dereference the subpackage */
PackageElement = *TopObjectList;
/* We must have a valid Package object */
if (!PackageElement ||
(PackageElement->Common.Type != ACPI_TYPE_PACKAGE))
{
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
}
/*
* The SubObjectList will now point to an array of the
* four IRQ elements: Address, Pin, Source and SourceIndex
*/
SubObjectList = PackageElement->Package.Elements;
/* Scan the IrqTableElements for the Source Name String */
NameFound = FALSE;
for (TableIndex = 0;
TableIndex < PackageElement->Package.Count && !NameFound;
TableIndex++)
{
if (*SubObjectList && /* Null object allowed */
((ACPI_TYPE_STRING ==
(*SubObjectList)->Common.Type) ||
((ACPI_TYPE_LOCAL_REFERENCE ==
(*SubObjectList)->Common.Type) &&
((*SubObjectList)->Reference.Class ==
ACPI_REFCLASS_NAME))))
{
NameFound = TRUE;
}
else
{
/* Look at the next element */
SubObjectList++;
}
}
TempSizeNeeded += (sizeof (ACPI_PCI_ROUTING_TABLE) - 4);
/* Was a String type found? */
if (NameFound)
{
if ((*SubObjectList)->Common.Type == ACPI_TYPE_STRING)
{
/*
* The length String.Length field does not include the
* terminating NULL, add 1
*/
TempSizeNeeded += ((ACPI_SIZE)
(*SubObjectList)->String.Length + 1);
}
else
{
TempSizeNeeded += AcpiNsGetPathnameLength (
(*SubObjectList)->Reference.Node);
}
}
else
{
/*
* If no name was found, then this is a NULL, which is
* translated as a UINT32 zero.
*/
TempSizeNeeded += sizeof (UINT32);
}
/* Round up the size since each element must be aligned */
TempSizeNeeded = ACPI_ROUND_UP_TO_64BIT (TempSizeNeeded);
/* Point to the next ACPI_OPERAND_OBJECT */
TopObjectList++;
}
/*
* Add an extra element to the end of the list, essentially a
* NULL terminator
*/
*BufferSizeNeeded = TempSizeNeeded + sizeof (ACPI_PCI_ROUTING_TABLE);
return_ACPI_STATUS (AE_OK);
}
static ACPI_STATUS
AcpiUtGetSimpleObjectSize (
ACPI_OPERAND_OBJECT *InternalObject,
ACPI_SIZE *ObjLength)
{
ACPI_SIZE Length;
ACPI_SIZE Size;
ACPI_STATUS Status = AE_OK;
ACPI_FUNCTION_TRACE_PTR (UtGetSimpleObjectSize, InternalObject);
/* Start with the length of the (external) Acpi object */
Length = sizeof (ACPI_OBJECT);
/* A NULL object is allowed, can be a legal uninitialized package element */
if (!InternalObject)
{
/*
* Object is NULL, just return the length of ACPI_OBJECT
* (A NULL ACPI_OBJECT is an object of all zeroes.)
*/
*ObjLength = ACPI_ROUND_UP_TO_NATIVE_WORD (Length);
return_ACPI_STATUS (AE_OK);
}
/* A Namespace Node should never appear here */
if (ACPI_GET_DESCRIPTOR_TYPE (InternalObject) == ACPI_DESC_TYPE_NAMED)
{
/* A namespace node should never get here */
ACPI_ERROR ((AE_INFO,
"Received a namespace node [%4.4s] "
"where an operand object is required",
ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, InternalObject)->Name.Ascii));
return_ACPI_STATUS (AE_AML_INTERNAL);
}
/*
* The final length depends on the object type
* Strings and Buffers are packed right up against the parent object and
* must be accessed bytewise or there may be alignment problems on
* certain processors
*/
switch (InternalObject->Common.Type)
{
case ACPI_TYPE_STRING:
Length += (ACPI_SIZE) InternalObject->String.Length + 1;
break;
case ACPI_TYPE_BUFFER:
Length += (ACPI_SIZE) InternalObject->Buffer.Length;
break;
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_POWER:
/* No extra data for these types */
break;
case ACPI_TYPE_LOCAL_REFERENCE:
switch (InternalObject->Reference.Class)
{
case ACPI_REFCLASS_NAME:
/*
* Get the actual length of the full pathname to this object.
* The reference will be converted to the pathname to the object
*/
Size = AcpiNsGetPathnameLength (InternalObject->Reference.Node);
if (!Size)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
Length += ACPI_ROUND_UP_TO_NATIVE_WORD (Size);
break;
default:
/*
* No other reference opcodes are supported.
* Notably, Locals and Args are not supported, but this may be
* required eventually.
*/
ACPI_ERROR ((AE_INFO, "Cannot convert to external object - "
"unsupported Reference Class [%s] 0x%X in object %p",
AcpiUtGetReferenceName (InternalObject),
InternalObject->Reference.Class, InternalObject));
Status = AE_TYPE;
break;
}
break;
default:
ACPI_ERROR ((AE_INFO, "Cannot convert to external object - "
"unsupported type [%s] 0x%X in object %p",
AcpiUtGetObjectTypeName (InternalObject),
InternalObject->Common.Type, InternalObject));
Status = AE_TYPE;
break;
}
/*
* Account for the space required by the object rounded up to the next
* multiple of the machine word size. This keeps each object aligned
* on a machine word boundary. (preventing alignment faults on some
* machines.)
*/
*ObjLength = ACPI_ROUND_UP_TO_NATIVE_WORD (Length);
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiNsHandleToPathname (
ACPI_HANDLE TargetHandle,
UINT32 *BufSize,
NATIVE_CHAR *UserBuffer)
{
ACPI_STATUS Status = AE_OK;
ACPI_NAMESPACE_NODE *Node;
UINT32 PathLength;
UINT32 UserBufSize;
ACPI_NAME Name;
UINT32 Size;
FUNCTION_TRACE_PTR ("NsHandleToPathname", TargetHandle);
if (!AcpiGbl_RootNode)
{
/*
* If the name space has not been initialized,
* this function should not have been called.
*/
return_ACPI_STATUS (AE_NO_NAMESPACE);
}
Node = AcpiNsConvertHandleToEntry (TargetHandle);
if (!Node)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/* Set return length to the required path length */
PathLength = AcpiNsGetPathnameLength (Node);
Size = PathLength - 1;
UserBufSize = *BufSize;
*BufSize = PathLength;
/* Check if the user buffer is sufficiently large */
if (PathLength > UserBufSize)
{
Status = AE_BUFFER_OVERFLOW;
goto Exit;
}
/* Store null terminator */
UserBuffer[Size] = 0;
Size -= ACPI_NAME_SIZE;
/* Put the original ACPI name at the end of the path */
MOVE_UNALIGNED32_TO_32 ((UserBuffer + Size),
&Node->Name);
UserBuffer[--Size] = PATH_SEPARATOR;
/* Build name backwards, putting "." between segments */
while ((Size > ACPI_NAME_SIZE) && Node)
{
Size -= ACPI_NAME_SIZE;
Name = AcpiNsFindParentName (Node);
MOVE_UNALIGNED32_TO_32 ((UserBuffer + Size), &Name);
UserBuffer[--Size] = PATH_SEPARATOR;
Node = AcpiNsGetParentObject (Node);
}
/*
* Overlay the "." preceding the first segment with
* the root name "\"
*/
UserBuffer[Size] = '\\';
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Len=%X, %s \n", PathLength, UserBuffer));
Exit:
return_ACPI_STATUS (Status);
}
static ACPI_STATUS
AcpiUtGetSimpleObjectSize (
ACPI_OPERAND_OBJECT *InternalObject,
ACPI_SIZE *ObjLength)
{
ACPI_SIZE Length;
ACPI_STATUS Status = AE_OK;
ACPI_FUNCTION_TRACE_PTR (UtGetSimpleObjectSize, InternalObject);
/*
* Handle a null object (Could be a uninitialized package
* element -- which is legal)
*/
if (!InternalObject)
{
*ObjLength = 0;
return_ACPI_STATUS (AE_OK);
}
/* Start with the length of the Acpi object */
Length = sizeof (ACPI_OBJECT);
if (ACPI_GET_DESCRIPTOR_TYPE (InternalObject) == ACPI_DESC_TYPE_NAMED)
{
/* Object is a named object (reference), just return the length */
*ObjLength = ACPI_ROUND_UP_TO_NATIVE_WORD (Length);
return_ACPI_STATUS (Status);
}
/*
* The final length depends on the object type
* Strings and Buffers are packed right up against the parent object and
* must be accessed bytewise or there may be alignment problems on
* certain processors
*/
switch (ACPI_GET_OBJECT_TYPE (InternalObject))
{
case ACPI_TYPE_STRING:
Length += (ACPI_SIZE) InternalObject->String.Length + 1;
break;
case ACPI_TYPE_BUFFER:
Length += (ACPI_SIZE) InternalObject->Buffer.Length;
break;
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_POWER:
/*
* No extra data for these types
*/
break;
case ACPI_TYPE_LOCAL_REFERENCE:
switch (InternalObject->Reference.Opcode)
{
case AML_INT_NAMEPATH_OP:
/*
* Get the actual length of the full pathname to this object.
* The reference will be converted to the pathname to the object
*/
Length += ACPI_ROUND_UP_TO_NATIVE_WORD (
AcpiNsGetPathnameLength (InternalObject->Reference.Node));
break;
default:
/*
* No other reference opcodes are supported.
* Notably, Locals and Args are not supported, but this may be
* required eventually.
*/
ACPI_ERROR ((AE_INFO,
"Unsupported Reference opcode=%X in object %p",
InternalObject->Reference.Opcode, InternalObject));
Status = AE_TYPE;
break;
}
break;
default:
ACPI_ERROR ((AE_INFO, "Unsupported type=%X in object %p",
ACPI_GET_OBJECT_TYPE (InternalObject), InternalObject));
Status = AE_TYPE;
break;
}
/*
* Account for the space required by the object rounded up to the next
* multiple of the machine word size. This keeps each object aligned
* on a machine word boundary. (preventing alignment faults on some
* machines.)
*/
*ObjLength = ACPI_ROUND_UP_TO_NATIVE_WORD (Length);
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiUtGetSimpleObjectSize (
ACPI_OPERAND_OBJECT *InternalObject,
UINT32 *ObjLength)
{
UINT32 Length;
ACPI_STATUS Status = AE_OK;
FUNCTION_TRACE_PTR ("UtGetSimpleObjectSize", InternalObject);
/* Handle a null object (Could be a uninitialized package element -- which is legal) */
if (!InternalObject)
{
*ObjLength = 0;
return_ACPI_STATUS (AE_OK);
}
/* Start with the length of the Acpi object */
Length = sizeof (ACPI_OBJECT);
if (VALID_DESCRIPTOR_TYPE (InternalObject, ACPI_DESC_TYPE_NAMED))
{
/* Object is a named object (reference), just return the length */
*ObjLength = (UINT32) ROUND_UP_TO_NATIVE_WORD (Length);
return_ACPI_STATUS (Status);
}
/*
* The final length depends on the object type
* Strings and Buffers are packed right up against the parent object and
* must be accessed bytewise or there may be alignment problems on
* certain processors
*/
switch (InternalObject->Common.Type)
{
case ACPI_TYPE_STRING:
Length += InternalObject->String.Length + 1;
break;
case ACPI_TYPE_BUFFER:
Length += InternalObject->Buffer.Length;
break;
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_POWER:
/*
* No extra data for these types
*/
break;
case INTERNAL_TYPE_REFERENCE:
/*
* The only type that should be here is internal opcode NAMEPATH_OP -- since
* this means an object reference
*/
if (InternalObject->Reference.Opcode != AML_INT_NAMEPATH_OP)
{
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
"Unsupported Reference opcode=%X in object %p\n",
InternalObject->Reference.Opcode, InternalObject));
Status = AE_TYPE;
}
else
{
/*
* Get the actual length of the full pathname to this object.
* The reference will be converted to the pathname to the object
*/
Length += ROUND_UP_TO_NATIVE_WORD (AcpiNsGetPathnameLength (InternalObject->Reference.Node));
}
break;
default:
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unsupported type=%X in object %p\n",
InternalObject->Common.Type, InternalObject));
Status = AE_TYPE;
break;
}
/*
* Account for the space required by the object rounded up to the next
* multiple of the machine word size. This keeps each object aligned
* on a machine word boundary. (preventing alignment faults on some
* machines.)
*/
*ObjLength = (UINT32) ROUND_UP_TO_NATIVE_WORD (Length);
return_ACPI_STATUS (Status);
}
