ACPI_STATUS
AcpiExConcatTemplate (
ACPI_OPERAND_OBJECT *ObjDesc1,
ACPI_OPERAND_OBJECT *ObjDesc2,
ACPI_OPERAND_OBJECT **ActualReturnDesc,
ACPI_WALK_STATE *WalkState)
{
ACPI_OPERAND_OBJECT *ReturnDesc;
UINT8 *NewBuf;
UINT8 *EndTag1;
UINT8 *EndTag2;
ACPI_SIZE Length1;
ACPI_SIZE Length2;
ACPI_FUNCTION_TRACE ("ExConcatTemplate");
/* Find the EndTags in each resource template */
EndTag1 = AcpiUtGetResourceEndTag (ObjDesc1);
EndTag2 = AcpiUtGetResourceEndTag (ObjDesc2);
if (!EndTag1 || !EndTag2)
{
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
}
/* Compute the length of each part */
Length1 = ACPI_PTR_DIFF (EndTag1, ObjDesc1->Buffer.Pointer);
Length2 = ACPI_PTR_DIFF (EndTag2, ObjDesc2->Buffer.Pointer) +
2; /* Size of END_TAG */
/* Create a new buffer object for the result */
ReturnDesc = AcpiUtCreateBufferObject (Length1 + Length2);
if (!ReturnDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
/* Copy the templates to the new descriptor */
NewBuf = ReturnDesc->Buffer.Pointer;
ACPI_MEMCPY (NewBuf, ObjDesc1->Buffer.Pointer, Length1);
ACPI_MEMCPY (NewBuf + Length1, ObjDesc2->Buffer.Pointer, Length2);
/* Compute the new checksum */
NewBuf[ReturnDesc->Buffer.Length - 1] =
AcpiUtGenerateChecksum (ReturnDesc->Buffer.Pointer,
(ReturnDesc->Buffer.Length - 1));
/* Return the completed template descriptor */
*ActualReturnDesc = ReturnDesc;
return_ACPI_STATUS (AE_OK);
}
ACPI_STATUS
AcpiNsConvertToUnicode (
ACPI_NAMESPACE_NODE *Scope,
ACPI_OPERAND_OBJECT *OriginalObject,
ACPI_OPERAND_OBJECT **ReturnObject)
{
ACPI_OPERAND_OBJECT *NewObject;
char *AsciiString;
UINT16 *UnicodeBuffer;
UINT32 UnicodeLength;
UINT32 i;
if (!OriginalObject)
{
return (AE_OK);
}
/* If a Buffer was returned, it must be at least two bytes long */
if (OriginalObject->Common.Type == ACPI_TYPE_BUFFER)
{
if (OriginalObject->Buffer.Length < 2)
{
return (AE_AML_OPERAND_VALUE);
}
*ReturnObject = NULL;
return (AE_OK);
}
/*
* The original object is an ASCII string. Convert this string to
* a unicode buffer.
*/
AsciiString = OriginalObject->String.Pointer;
UnicodeLength = (OriginalObject->String.Length * 2) + 2;
/* Create a new buffer object for the Unicode data */
NewObject = AcpiUtCreateBufferObject (UnicodeLength);
if (!NewObject)
{
return (AE_NO_MEMORY);
}
UnicodeBuffer = ACPI_CAST_PTR (UINT16, NewObject->Buffer.Pointer);
/* Convert ASCII to Unicode */
for (i = 0; i < OriginalObject->String.Length; i++)
{
UnicodeBuffer[i] = (UINT16) AsciiString[i];
}
*ReturnObject = NewObject;
return (AE_OK);
}
ACPI_STATUS
AcpiExConvertToBuffer (
ACPI_OPERAND_OBJECT *ObjDesc,
ACPI_OPERAND_OBJECT **ResultDesc)
{
ACPI_OPERAND_OBJECT *ReturnDesc;
UINT8 *NewBuf;
ACPI_FUNCTION_TRACE_PTR (ExConvertToBuffer, ObjDesc);
switch (ObjDesc->Common.Type)
{
case ACPI_TYPE_BUFFER:
/* No conversion necessary */
*ResultDesc = ObjDesc;
return_ACPI_STATUS (AE_OK);
case ACPI_TYPE_INTEGER:
/*
* Create a new Buffer object.
* Need enough space for one integer
*/
ReturnDesc = AcpiUtCreateBufferObject (AcpiGbl_IntegerByteWidth);
if (!ReturnDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
/* Copy the integer to the buffer, LSB first */
NewBuf = ReturnDesc->Buffer.Pointer;
ACPI_MEMCPY (NewBuf,
&ObjDesc->Integer.Value,
AcpiGbl_IntegerByteWidth);
break;
case ACPI_TYPE_STRING:
/*
* Create a new Buffer object
* Size will be the string length
*
* NOTE: Add one to the string length to include the null terminator.
* The ACPI spec is unclear on this subject, but there is existing
* ASL/AML code that depends on the null being transferred to the new
* buffer.
*/
ReturnDesc = AcpiUtCreateBufferObject (
(ACPI_SIZE) ObjDesc->String.Length + 1);
if (!ReturnDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
/* Copy the string to the buffer */
NewBuf = ReturnDesc->Buffer.Pointer;
ACPI_STRNCPY ((char *) NewBuf, (char *) ObjDesc->String.Pointer,
ObjDesc->String.Length);
break;
default:
return_ACPI_STATUS (AE_TYPE);
}
/* Mark buffer initialized */
ReturnDesc->Common.Flags |= AOPOBJ_DATA_VALID;
*ResultDesc = ReturnDesc;
return_ACPI_STATUS (AE_OK);
}
static ACPI_STATUS
AcpiNsRepair_FDE (
ACPI_EVALUATE_INFO *Info,
ACPI_OPERAND_OBJECT **ReturnObjectPtr)
{
ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr;
ACPI_OPERAND_OBJECT *BufferObject;
UINT8 *ByteBuffer;
UINT32 *DwordBuffer;
UINT32 i;
ACPI_FUNCTION_NAME (NsRepair_FDE);
switch (ReturnObject->Common.Type)
{
case ACPI_TYPE_BUFFER:
/* This is the expected type. Length should be (at least) 5 DWORDs */
if (ReturnObject->Buffer.Length >= ACPI_FDE_DWORD_BUFFER_SIZE)
{
return (AE_OK);
}
/* We can only repair if we have exactly 5 BYTEs */
if (ReturnObject->Buffer.Length != ACPI_FDE_BYTE_BUFFER_SIZE)
{
ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, Info->NodeFlags,
"Incorrect return buffer length %u, expected %u",
ReturnObject->Buffer.Length, ACPI_FDE_DWORD_BUFFER_SIZE));
return (AE_AML_OPERAND_TYPE);
}
/* Create the new (larger) buffer object */
BufferObject = AcpiUtCreateBufferObject (ACPI_FDE_DWORD_BUFFER_SIZE);
if (!BufferObject)
{
return (AE_NO_MEMORY);
}
/* Expand each byte to a DWORD */
ByteBuffer = ReturnObject->Buffer.Pointer;
DwordBuffer = ACPI_CAST_PTR (UINT32, BufferObject->Buffer.Pointer);
for (i = 0; i < ACPI_FDE_FIELD_COUNT; i++)
{
*DwordBuffer = (UINT32) *ByteBuffer;
DwordBuffer++;
ByteBuffer++;
}
ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR,
"%s Expanded Byte Buffer to expected DWord Buffer\n",
Info->FullPathname));
break;
default:
return (AE_AML_OPERAND_TYPE);
}
/* Delete the original return object, return the new buffer object */
AcpiUtRemoveReference (ReturnObject);
*ReturnObjectPtr = BufferObject;
Info->ReturnFlags |= ACPI_OBJECT_REPAIRED;
return (AE_OK);
}
ACPI_STATUS
AcpiExConcatTemplate (
ACPI_OPERAND_OBJECT *Operand0,
ACPI_OPERAND_OBJECT *Operand1,
ACPI_OPERAND_OBJECT **ActualReturnDesc,
ACPI_WALK_STATE *WalkState)
{
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT *ReturnDesc;
UINT8 *NewBuf;
UINT8 *EndTag;
ACPI_SIZE Length0;
ACPI_SIZE Length1;
ACPI_SIZE NewLength;
ACPI_FUNCTION_TRACE (ExConcatTemplate);
/*
* Find the EndTag descriptor in each resource template.
* Note1: returned pointers point TO the EndTag, not past it.
* Note2: zero-length buffers are allowed; treated like one EndTag
*/
/* Get the length of the first resource template */
Status = AcpiUtGetResourceEndTag (Operand0, &EndTag);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
Length0 = ACPI_PTR_DIFF (EndTag, Operand0->Buffer.Pointer);
/* Get the length of the second resource template */
Status = AcpiUtGetResourceEndTag (Operand1, &EndTag);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
Length1 = ACPI_PTR_DIFF (EndTag, Operand1->Buffer.Pointer);
/* Combine both lengths, minimum size will be 2 for EndTag */
NewLength = Length0 + Length1 + sizeof (AML_RESOURCE_END_TAG);
/* Create a new buffer object for the result (with one EndTag) */
ReturnDesc = AcpiUtCreateBufferObject (NewLength);
if (!ReturnDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
/*
* Copy the templates to the new buffer, 0 first, then 1 follows. One
* EndTag descriptor is copied from Operand1.
*/
NewBuf = ReturnDesc->Buffer.Pointer;
memcpy (NewBuf, Operand0->Buffer.Pointer, Length0);
memcpy (NewBuf + Length0, Operand1->Buffer.Pointer, Length1);
/* Insert EndTag and set the checksum to zero, means "ignore checksum" */
NewBuf[NewLength - 1] = 0;
NewBuf[NewLength - 2] = ACPI_RESOURCE_NAME_END_TAG | 1;
/* Return the completed resource template */
*ActualReturnDesc = ReturnDesc;
return_ACPI_STATUS (AE_OK);
}
ACPI_STATUS
AcpiExDoConcatenate (
ACPI_OPERAND_OBJECT *Operand0,
ACPI_OPERAND_OBJECT *Operand1,
ACPI_OPERAND_OBJECT **ActualReturnDesc,
ACPI_WALK_STATE *WalkState)
{
ACPI_OPERAND_OBJECT *LocalOperand0 = Operand0;
ACPI_OPERAND_OBJECT *LocalOperand1 = Operand1;
ACPI_OPERAND_OBJECT *TempOperand1 = NULL;
ACPI_OPERAND_OBJECT *ReturnDesc;
char *Buffer;
ACPI_OBJECT_TYPE Operand0Type;
ACPI_OBJECT_TYPE Operand1Type;
ACPI_STATUS Status;
ACPI_FUNCTION_TRACE (ExDoConcatenate);
/* Operand 0 preprocessing */
switch (Operand0->Common.Type)
{
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
Operand0Type = Operand0->Common.Type;
break;
default:
/* For all other types, get the "object type" string */
Status = AcpiExConvertToObjectTypeString (
Operand0, &LocalOperand0);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
Operand0Type = ACPI_TYPE_STRING;
break;
}
/* Operand 1 preprocessing */
switch (Operand1->Common.Type)
{
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
Operand1Type = Operand1->Common.Type;
break;
default:
/* For all other types, get the "object type" string */
Status = AcpiExConvertToObjectTypeString (
Operand1, &LocalOperand1);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
Operand1Type = ACPI_TYPE_STRING;
break;
}
/*
* Convert the second operand if necessary. The first operand (0)
* determines the type of the second operand (1) (See the Data Types
* section of the ACPI specification). Both object types are
* guaranteed to be either Integer/String/Buffer by the operand
* resolution mechanism.
*/
switch (Operand0Type)
{
case ACPI_TYPE_INTEGER:
Status = AcpiExConvertToInteger (LocalOperand1, &TempOperand1,
ACPI_STRTOUL_BASE16);
break;
case ACPI_TYPE_BUFFER:
Status = AcpiExConvertToBuffer (LocalOperand1, &TempOperand1);
break;
case ACPI_TYPE_STRING:
switch (Operand1Type)
{
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
/* Other types have already been converted to string */
Status = AcpiExConvertToString (
LocalOperand1, &TempOperand1, ACPI_IMPLICIT_CONVERT_HEX);
break;
default:
Status = AE_OK;
break;
}
break;
default:
ACPI_ERROR ((AE_INFO, "Invalid object type: 0x%X",
Operand0->Common.Type));
Status = AE_AML_INTERNAL;
}
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
/* Take care with any newly created operand objects */
if ((LocalOperand1 != Operand1) &&
(LocalOperand1 != TempOperand1))
{
AcpiUtRemoveReference (LocalOperand1);
}
LocalOperand1 = TempOperand1;
/*
* Both operands are now known to be the same object type
* (Both are Integer, String, or Buffer), and we can now perform
* the concatenation.
*
* There are three cases to handle, as per the ACPI spec:
*
* 1) Two Integers concatenated to produce a new Buffer
* 2) Two Strings concatenated to produce a new String
* 3) Two Buffers concatenated to produce a new Buffer
*/
switch (Operand0Type)
{
case ACPI_TYPE_INTEGER:
/* Result of two Integers is a Buffer */
/* Need enough buffer space for two integers */
ReturnDesc = AcpiUtCreateBufferObject (
(ACPI_SIZE) ACPI_MUL_2 (AcpiGbl_IntegerByteWidth));
if (!ReturnDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
Buffer = (char *) ReturnDesc->Buffer.Pointer;
/* Copy the first integer, LSB first */
memcpy (Buffer, &Operand0->Integer.Value,
AcpiGbl_IntegerByteWidth);
/* Copy the second integer (LSB first) after the first */
memcpy (Buffer + AcpiGbl_IntegerByteWidth,
&LocalOperand1->Integer.Value, AcpiGbl_IntegerByteWidth);
break;
case ACPI_TYPE_STRING:
/* Result of two Strings is a String */
ReturnDesc = AcpiUtCreateStringObject (
((ACPI_SIZE) LocalOperand0->String.Length +
LocalOperand1->String.Length));
if (!ReturnDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
Buffer = ReturnDesc->String.Pointer;
/* Concatenate the strings */
strcpy (Buffer, LocalOperand0->String.Pointer);
strcat (Buffer, LocalOperand1->String.Pointer);
break;
case ACPI_TYPE_BUFFER:
/* Result of two Buffers is a Buffer */
ReturnDesc = AcpiUtCreateBufferObject (
((ACPI_SIZE) Operand0->Buffer.Length +
LocalOperand1->Buffer.Length));
if (!ReturnDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
Buffer = (char *) ReturnDesc->Buffer.Pointer;
/* Concatenate the buffers */
memcpy (Buffer, Operand0->Buffer.Pointer,
Operand0->Buffer.Length);
memcpy (Buffer + Operand0->Buffer.Length,
LocalOperand1->Buffer.Pointer,
LocalOperand1->Buffer.Length);
break;
default:
/* Invalid object type, should not happen here */
ACPI_ERROR ((AE_INFO, "Invalid object type: 0x%X",
Operand0->Common.Type));
Status = AE_AML_INTERNAL;
goto Cleanup;
}
*ActualReturnDesc = ReturnDesc;
Cleanup:
if (LocalOperand0 != Operand0)
{
AcpiUtRemoveReference (LocalOperand0);
}
if (LocalOperand1 != Operand1)
{
AcpiUtRemoveReference (LocalOperand1);
}
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiNsConvertToResource (
ACPI_NAMESPACE_NODE *Scope,
ACPI_OPERAND_OBJECT *OriginalObject,
ACPI_OPERAND_OBJECT **ReturnObject)
{
ACPI_OPERAND_OBJECT *NewObject;
UINT8 *Buffer;
/*
* We can fix the following cases for an expected resource template:
* 1. No return value (interpreter slack mode is disabled)
* 2. A "Return (Zero)" statement
* 3. A "Return empty buffer" statement
*
* We will return a buffer containing a single EndTag
* resource descriptor.
*/
if (OriginalObject)
{
switch (OriginalObject->Common.Type)
{
case ACPI_TYPE_INTEGER:
/* We can only repair an Integer==0 */
if (OriginalObject->Integer.Value)
{
return (AE_AML_OPERAND_TYPE);
}
break;
case ACPI_TYPE_BUFFER:
if (OriginalObject->Buffer.Length)
{
/* Additional checks can be added in the future */
*ReturnObject = NULL;
return (AE_OK);
}
break;
case ACPI_TYPE_STRING:
default:
return (AE_AML_OPERAND_TYPE);
}
}
/* Create the new buffer object for the resource descriptor */
NewObject = AcpiUtCreateBufferObject (2);
if (!NewObject)
{
return (AE_NO_MEMORY);
}
Buffer = ACPI_CAST_PTR (UINT8, NewObject->Buffer.Pointer);
/* Initialize the Buffer with a single EndTag descriptor */
Buffer[0] = (ACPI_RESOURCE_NAME_END_TAG | ASL_RDESC_END_TAG_SIZE);
Buffer[1] = 0x00;
*ReturnObject = NewObject;
return (AE_OK);
}
ACPI_STATUS
AcpiNsConvertToBuffer (
ACPI_OPERAND_OBJECT *OriginalObject,
ACPI_OPERAND_OBJECT **ReturnObject)
{
ACPI_OPERAND_OBJECT *NewObject;
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT **Elements;
UINT32 *DwordBuffer;
UINT32 Count;
UINT32 i;
switch (OriginalObject->Common.Type)
{
case ACPI_TYPE_INTEGER:
/*
* Integer-to-Buffer conversion.
* Convert the Integer to a packed-byte buffer. _MAT and other
* objects need this sometimes, if a read has been performed on a
* Field object that is less than or equal to the global integer
* size (32 or 64 bits).
*/
Status = AcpiExConvertToBuffer (OriginalObject, &NewObject);
if (ACPI_FAILURE (Status))
{
return (Status);
}
break;
case ACPI_TYPE_STRING:
/* String-to-Buffer conversion. Simple data copy */
NewObject = AcpiUtCreateBufferObject
(OriginalObject->String.Length);
if (!NewObject)
{
return (AE_NO_MEMORY);
}
memcpy (NewObject->Buffer.Pointer,
OriginalObject->String.Pointer, OriginalObject->String.Length);
break;
case ACPI_TYPE_PACKAGE:
/*
* This case is often seen for predefined names that must return a
* Buffer object with multiple DWORD integers within. For example,
* _FDE and _GTM. The Package can be converted to a Buffer.
*/
/* All elements of the Package must be integers */
Elements = OriginalObject->Package.Elements;
Count = OriginalObject->Package.Count;
for (i = 0; i < Count; i++)
{
if ((!*Elements) ||
((*Elements)->Common.Type != ACPI_TYPE_INTEGER))
{
return (AE_AML_OPERAND_TYPE);
}
Elements++;
}
/* Create the new buffer object to replace the Package */
NewObject = AcpiUtCreateBufferObject (ACPI_MUL_4 (Count));
if (!NewObject)
{
return (AE_NO_MEMORY);
}
/* Copy the package elements (integers) to the buffer as DWORDs */
Elements = OriginalObject->Package.Elements;
DwordBuffer = ACPI_CAST_PTR (UINT32, NewObject->Buffer.Pointer);
for (i = 0; i < Count; i++)
{
*DwordBuffer = (UINT32) (*Elements)->Integer.Value;
DwordBuffer++;
Elements++;
}
break;
default:
return (AE_AML_OPERAND_TYPE);
}
*ReturnObject = NewObject;
return (AE_OK);
}
ACPI_STATUS
AcpiExDoConcatenate (
ACPI_OPERAND_OBJECT *Operand0,
ACPI_OPERAND_OBJECT *Operand1,
ACPI_OPERAND_OBJECT **ActualReturnDesc,
ACPI_WALK_STATE *WalkState)
{
ACPI_OPERAND_OBJECT *LocalOperand1 = Operand1;
ACPI_OPERAND_OBJECT *ReturnDesc;
char *NewBuf;
ACPI_STATUS Status;
ACPI_FUNCTION_TRACE (ExDoConcatenate);
/*
* Convert the second operand if necessary. The first operand
* determines the type of the second operand, (See the Data Types
* section of the ACPI specification.) Both object types are
* guaranteed to be either Integer/String/Buffer by the operand
* resolution mechanism.
*/
switch (ACPI_GET_OBJECT_TYPE (Operand0))
{
case ACPI_TYPE_INTEGER:
Status = AcpiExConvertToInteger (Operand1, &LocalOperand1, 16);
break;
case ACPI_TYPE_STRING:
Status = AcpiExConvertToString (Operand1, &LocalOperand1,
ACPI_IMPLICIT_CONVERT_HEX);
break;
case ACPI_TYPE_BUFFER:
Status = AcpiExConvertToBuffer (Operand1, &LocalOperand1);
break;
default:
ACPI_ERROR ((AE_INFO, "Invalid object type: %X",
ACPI_GET_OBJECT_TYPE (Operand0)));
Status = AE_AML_INTERNAL;
}
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
/*
* Both operands are now known to be the same object type
* (Both are Integer, String, or Buffer), and we can now perform the
* concatenation.
*/
/*
* There are three cases to handle:
*
* 1) Two Integers concatenated to produce a new Buffer
* 2) Two Strings concatenated to produce a new String
* 3) Two Buffers concatenated to produce a new Buffer
*/
switch (ACPI_GET_OBJECT_TYPE (Operand0))
{
case ACPI_TYPE_INTEGER:
/* Result of two Integers is a Buffer */
/* Need enough buffer space for two integers */
ReturnDesc = AcpiUtCreateBufferObject ((ACPI_SIZE)
ACPI_MUL_2 (AcpiGbl_IntegerByteWidth));
if (!ReturnDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
NewBuf = (char *) ReturnDesc->Buffer.Pointer;
/* Copy the first integer, LSB first */
ACPI_MEMCPY (NewBuf, &Operand0->Integer.Value,
AcpiGbl_IntegerByteWidth);
/* Copy the second integer (LSB first) after the first */
ACPI_MEMCPY (NewBuf + AcpiGbl_IntegerByteWidth,
&LocalOperand1->Integer.Value,
AcpiGbl_IntegerByteWidth);
break;
case ACPI_TYPE_STRING:
/* Result of two Strings is a String */
ReturnDesc = AcpiUtCreateStringObject ((ACPI_SIZE)
(Operand0->String.Length +
LocalOperand1->String.Length));
if (!ReturnDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
NewBuf = ReturnDesc->String.Pointer;
/* Concatenate the strings */
ACPI_STRCPY (NewBuf, Operand0->String.Pointer);
ACPI_STRCPY (NewBuf + Operand0->String.Length,
LocalOperand1->String.Pointer);
break;
case ACPI_TYPE_BUFFER:
/* Result of two Buffers is a Buffer */
ReturnDesc = AcpiUtCreateBufferObject ((ACPI_SIZE)
(Operand0->Buffer.Length +
LocalOperand1->Buffer.Length));
if (!ReturnDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
NewBuf = (char *) ReturnDesc->Buffer.Pointer;
/* Concatenate the buffers */
ACPI_MEMCPY (NewBuf, Operand0->Buffer.Pointer,
Operand0->Buffer.Length);
ACPI_MEMCPY (NewBuf + Operand0->Buffer.Length,
LocalOperand1->Buffer.Pointer,
LocalOperand1->Buffer.Length);
break;
default:
/* Invalid object type, should not happen here */
ACPI_ERROR ((AE_INFO, "Invalid object type: %X",
ACPI_GET_OBJECT_TYPE (Operand0)));
Status =AE_AML_INTERNAL;
goto Cleanup;
}
*ActualReturnDesc = ReturnDesc;
Cleanup:
if (LocalOperand1 != Operand1)
{
AcpiUtRemoveReference (LocalOperand1);
}
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiNsRepairNullElement (
ACPI_EVALUATE_INFO *Info,
UINT32 ExpectedBtypes,
UINT32 PackageIndex,
ACPI_OPERAND_OBJECT **ReturnObjectPtr)
{
ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr;
ACPI_OPERAND_OBJECT *NewObject;
ACPI_FUNCTION_NAME (NsRepairNullElement);
/* No repair needed if return object is non-NULL */
if (ReturnObject)
{
return (AE_OK);
}
/*
* Attempt to repair a NULL element of a Package object. This applies to
* predefined names that return a fixed-length package and each element
* is required. It does not apply to variable-length packages where NULL
* elements are allowed, especially at the end of the package.
*/
if (ExpectedBtypes & ACPI_RTYPE_INTEGER)
{
/* Need an Integer - create a zero-value integer */
NewObject = AcpiUtCreateIntegerObject ((UINT64) 0);
}
else if (ExpectedBtypes & ACPI_RTYPE_STRING)
{
/* Need a String - create a NULL string */
NewObject = AcpiUtCreateStringObject (0);
}
else if (ExpectedBtypes & ACPI_RTYPE_BUFFER)
{
/* Need a Buffer - create a zero-length buffer */
NewObject = AcpiUtCreateBufferObject (0);
}
else
{
/* Error for all other expected types */
return (AE_AML_OPERAND_TYPE);
}
if (!NewObject)
{
return (AE_NO_MEMORY);
}
/* Set the reference count according to the parent Package object */
NewObject->Common.ReferenceCount =
Info->ParentPackage->Common.ReferenceCount;
ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR,
"%s: Converted NULL package element to expected %s at index %u\n",
Info->FullPathname, AcpiUtGetObjectTypeName (NewObject),
PackageIndex));
*ReturnObjectPtr = NewObject;
Info->ReturnFlags |= ACPI_OBJECT_REPAIRED;
return (AE_OK);
}
ACPI_STATUS
AcpiExReadDataFromField (
ACPI_WALK_STATE *WalkState,
ACPI_OPERAND_OBJECT *ObjDesc,
ACPI_OPERAND_OBJECT **RetBufferDesc)
{
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT *BufferDesc;
ACPI_SIZE Length;
void *Buffer;
UINT32 Function;
ACPI_FUNCTION_TRACE_PTR (ExReadDataFromField, ObjDesc);
/* Parameter validation */
if (!ObjDesc)
{
return_ACPI_STATUS (AE_AML_NO_OPERAND);
}
if (!RetBufferDesc)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
if (ObjDesc->Common.Type == ACPI_TYPE_BUFFER_FIELD)
{
/*
* If the BufferField arguments have not been previously evaluated,
* evaluate them now and save the results.
*/
if (!(ObjDesc->Common.Flags & AOPOBJ_DATA_VALID))
{
Status = AcpiDsGetBufferFieldArguments (ObjDesc);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
}
}
else if ((ObjDesc->Common.Type == ACPI_TYPE_LOCAL_REGION_FIELD) &&
(ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_SMBUS ||
ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GSBUS ||
ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_IPMI))
{
/*
* This is an SMBus, GSBus or IPMI read. We must create a buffer to hold
* the data and then directly access the region handler.
*
* Note: SMBus and GSBus protocol value is passed in upper 16-bits of Function
*/
if (ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_SMBUS)
{
Length = ACPI_SMBUS_BUFFER_SIZE;
Function = ACPI_READ | (ObjDesc->Field.Attribute << 16);
}
else if (ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GSBUS)
{
Length = ACPI_GSBUS_BUFFER_SIZE;
Function = ACPI_READ | (ObjDesc->Field.Attribute << 16);
}
else /* IPMI */
{
Length = ACPI_IPMI_BUFFER_SIZE;
Function = ACPI_READ;
}
BufferDesc = AcpiUtCreateBufferObject (Length);
if (!BufferDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
/* Lock entire transaction if requested */
AcpiExAcquireGlobalLock (ObjDesc->CommonField.FieldFlags);
/* Call the region handler for the read */
Status = AcpiExAccessRegion (ObjDesc, 0,
ACPI_CAST_PTR (UINT64, BufferDesc->Buffer.Pointer),
Function);
AcpiExReleaseGlobalLock (ObjDesc->CommonField.FieldFlags);
goto Exit;
}
/*
* Allocate a buffer for the contents of the field.
*
* If the field is larger than the current integer width, create
* a BUFFER to hold it. Otherwise, use an INTEGER. This allows
* the use of arithmetic operators on the returned value if the
* field size is equal or smaller than an Integer.
*
* Note: Field.length is in bits.
*/
Length = (ACPI_SIZE) ACPI_ROUND_BITS_UP_TO_BYTES (ObjDesc->Field.BitLength);
if (Length > AcpiGbl_IntegerByteWidth)
{
/* Field is too large for an Integer, create a Buffer instead */
BufferDesc = AcpiUtCreateBufferObject (Length);
if (!BufferDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
Buffer = BufferDesc->Buffer.Pointer;
}
else
{
/* Field will fit within an Integer (normal case) */
BufferDesc = AcpiUtCreateIntegerObject ((UINT64) 0);
if (!BufferDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
Length = AcpiGbl_IntegerByteWidth;
Buffer = &BufferDesc->Integer.Value;
}
ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
"FieldRead [TO]: Obj %p, Type %X, Buf %p, ByteLen %X\n",
ObjDesc, ObjDesc->Common.Type, Buffer, (UINT32) Length));
ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
"FieldRead [FROM]: BitLen %X, BitOff %X, ByteOff %X\n",
ObjDesc->CommonField.BitLength,
ObjDesc->CommonField.StartFieldBitOffset,
ObjDesc->CommonField.BaseByteOffset));
/* Lock entire transaction if requested */
AcpiExAcquireGlobalLock (ObjDesc->CommonField.FieldFlags);
/* Read from the field */
Status = AcpiExExtractFromField (ObjDesc, Buffer, (UINT32) Length);
AcpiExReleaseGlobalLock (ObjDesc->CommonField.FieldFlags);
Exit:
if (ACPI_FAILURE (Status))
{
AcpiUtRemoveReference (BufferDesc);
}
else
{
*RetBufferDesc = BufferDesc;
}
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiExWriteDataToField (
ACPI_OPERAND_OBJECT *SourceDesc,
ACPI_OPERAND_OBJECT *ObjDesc,
ACPI_OPERAND_OBJECT **ResultDesc)
{
ACPI_STATUS Status;
UINT32 Length;
void *Buffer;
ACPI_OPERAND_OBJECT *BufferDesc;
UINT32 Function;
ACPI_FUNCTION_TRACE_PTR (ExWriteDataToField, ObjDesc);
/* Parameter validation */
if (!SourceDesc || !ObjDesc)
{
return_ACPI_STATUS (AE_AML_NO_OPERAND);
}
if (ObjDesc->Common.Type == ACPI_TYPE_BUFFER_FIELD)
{
/*
* If the BufferField arguments have not been previously evaluated,
* evaluate them now and save the results.
*/
if (!(ObjDesc->Common.Flags & AOPOBJ_DATA_VALID))
{
Status = AcpiDsGetBufferFieldArguments (ObjDesc);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
}
}
else if ((ObjDesc->Common.Type == ACPI_TYPE_LOCAL_REGION_FIELD) &&
(ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_SMBUS ||
ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GSBUS ||
ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_IPMI))
{
/*
* This is an SMBus, GSBus or IPMI write. We will bypass the entire field
* mechanism and handoff the buffer directly to the handler. For
* these address spaces, the buffer is bi-directional; on a write,
* return data is returned in the same buffer.
*
* Source must be a buffer of sufficient size:
* ACPI_SMBUS_BUFFER_SIZE, ACPI_GSBUS_BUFFER_SIZE, or ACPI_IPMI_BUFFER_SIZE.
*
* Note: SMBus and GSBus protocol type is passed in upper 16-bits of Function
*/
if (SourceDesc->Common.Type != ACPI_TYPE_BUFFER)
{
ACPI_ERROR ((AE_INFO,
"SMBus/IPMI/GenericSerialBus write requires Buffer, found type %s",
AcpiUtGetObjectTypeName (SourceDesc)));
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
}
if (ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_SMBUS)
{
Length = ACPI_SMBUS_BUFFER_SIZE;
Function = ACPI_WRITE | (ObjDesc->Field.Attribute << 16);
}
else if (ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GSBUS)
{
Length = ACPI_GSBUS_BUFFER_SIZE;
Function = ACPI_WRITE | (ObjDesc->Field.Attribute << 16);
}
else /* IPMI */
{
Length = ACPI_IPMI_BUFFER_SIZE;
Function = ACPI_WRITE;
}
if (SourceDesc->Buffer.Length < Length)
{
ACPI_ERROR ((AE_INFO,
"SMBus/IPMI/GenericSerialBus write requires Buffer of length %u, found length %u",
Length, SourceDesc->Buffer.Length));
return_ACPI_STATUS (AE_AML_BUFFER_LIMIT);
}
/* Create the bi-directional buffer */
BufferDesc = AcpiUtCreateBufferObject (Length);
if (!BufferDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
Buffer = BufferDesc->Buffer.Pointer;
ACPI_MEMCPY (Buffer, SourceDesc->Buffer.Pointer, Length);
/* Lock entire transaction if requested */
AcpiExAcquireGlobalLock (ObjDesc->CommonField.FieldFlags);
/*
* Perform the write (returns status and perhaps data in the
* same buffer)
*/
Status = AcpiExAccessRegion (ObjDesc, 0,
(UINT64 *) Buffer, Function);
AcpiExReleaseGlobalLock (ObjDesc->CommonField.FieldFlags);
*ResultDesc = BufferDesc;
return_ACPI_STATUS (Status);
}
/* Get a pointer to the data to be written */
switch (SourceDesc->Common.Type)
{
case ACPI_TYPE_INTEGER:
Buffer = &SourceDesc->Integer.Value;
Length = sizeof (SourceDesc->Integer.Value);
break;
case ACPI_TYPE_BUFFER:
Buffer = SourceDesc->Buffer.Pointer;
Length = SourceDesc->Buffer.Length;
break;
case ACPI_TYPE_STRING:
Buffer = SourceDesc->String.Pointer;
Length = SourceDesc->String.Length;
break;
default:
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
}
ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
"FieldWrite [FROM]: Obj %p (%s:%X), Buf %p, ByteLen %X\n",
SourceDesc, AcpiUtGetTypeName (SourceDesc->Common.Type),
SourceDesc->Common.Type, Buffer, Length));
ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
"FieldWrite [TO]: Obj %p (%s:%X), BitLen %X, BitOff %X, ByteOff %X\n",
ObjDesc, AcpiUtGetTypeName (ObjDesc->Common.Type),
ObjDesc->Common.Type,
ObjDesc->CommonField.BitLength,
ObjDesc->CommonField.StartFieldBitOffset,
ObjDesc->CommonField.BaseByteOffset));
/* Lock entire transaction if requested */
AcpiExAcquireGlobalLock (ObjDesc->CommonField.FieldFlags);
/* Write to the field */
Status = AcpiExInsertIntoField (ObjDesc, Buffer, Length);
AcpiExReleaseGlobalLock (ObjDesc->CommonField.FieldFlags);
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiExWriteDataToField (
ACPI_OPERAND_OBJECT *SourceDesc,
ACPI_OPERAND_OBJECT *ObjDesc,
ACPI_OPERAND_OBJECT **ResultDesc)
{
ACPI_STATUS Status;
UINT32 Length;
void *Buffer;
ACPI_OPERAND_OBJECT *BufferDesc;
UINT32 Function;
UINT16 AccessorType;
ACPI_FUNCTION_TRACE_PTR (ExWriteDataToField, ObjDesc);
/* Parameter validation */
if (!SourceDesc || !ObjDesc)
{
return_ACPI_STATUS (AE_AML_NO_OPERAND);
}
if (ObjDesc->Common.Type == ACPI_TYPE_BUFFER_FIELD)
{
/*
* If the BufferField arguments have not been previously evaluated,
* evaluate them now and save the results.
*/
if (!(ObjDesc->Common.Flags & AOPOBJ_DATA_VALID))
{
Status = AcpiDsGetBufferFieldArguments (ObjDesc);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
}
}
else if ((ObjDesc->Common.Type == ACPI_TYPE_LOCAL_REGION_FIELD) &&
(ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_SMBUS ||
ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GSBUS ||
ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_IPMI))
{
/*
* This is an SMBus, GSBus or IPMI write. We will bypass the entire
* field mechanism and handoff the buffer directly to the handler.
* For these address spaces, the buffer is bi-directional; on a
* write, return data is returned in the same buffer.
*
* Source must be a buffer of sufficient size:
* ACPI_SMBUS_BUFFER_SIZE, ACPI_GSBUS_BUFFER_SIZE, or
* ACPI_IPMI_BUFFER_SIZE.
*
* Note: SMBus and GSBus protocol type is passed in upper 16-bits
* of Function
*/
if (SourceDesc->Common.Type != ACPI_TYPE_BUFFER)
{
ACPI_ERROR ((AE_INFO,
"SMBus/IPMI/GenericSerialBus write requires "
"Buffer, found type %s",
AcpiUtGetObjectTypeName (SourceDesc)));
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
}
if (ObjDesc->Field.RegionObj->Region.SpaceId ==
ACPI_ADR_SPACE_SMBUS)
{
Length = ACPI_SMBUS_BUFFER_SIZE;
Function = ACPI_WRITE | (ObjDesc->Field.Attribute << 16);
}
else if (ObjDesc->Field.RegionObj->Region.SpaceId ==
ACPI_ADR_SPACE_GSBUS)
{
AccessorType = ObjDesc->Field.Attribute;
Length = AcpiExGetSerialAccessLength (
AccessorType, ObjDesc->Field.AccessLength);
/*
* Add additional 2 bytes for the GenericSerialBus data buffer:
*
* Status; (Byte 0 of the data buffer)
* Length; (Byte 1 of the data buffer)
* Data[x-1]: (Bytes 2-x of the arbitrary length data buffer)
*/
Length += 2;
Function = ACPI_WRITE | (AccessorType << 16);
}
else /* IPMI */
{
Length = ACPI_IPMI_BUFFER_SIZE;
Function = ACPI_WRITE;
}
if (SourceDesc->Buffer.Length < Length)
{
ACPI_ERROR ((AE_INFO,
"SMBus/IPMI/GenericSerialBus write requires "
"Buffer of length %u, found length %u",
Length, SourceDesc->Buffer.Length));
return_ACPI_STATUS (AE_AML_BUFFER_LIMIT);
}
/* Create the bi-directional buffer */
BufferDesc = AcpiUtCreateBufferObject (Length);
if (!BufferDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
Buffer = BufferDesc->Buffer.Pointer;
memcpy (Buffer, SourceDesc->Buffer.Pointer, Length);
/* Lock entire transaction if requested */
AcpiExAcquireGlobalLock (ObjDesc->CommonField.FieldFlags);
/*
* Perform the write (returns status and perhaps data in the
* same buffer)
*/
Status = AcpiExAccessRegion (
ObjDesc, 0, (UINT64 *) Buffer, Function);
AcpiExReleaseGlobalLock (ObjDesc->CommonField.FieldFlags);
*ResultDesc = BufferDesc;
return_ACPI_STATUS (Status);
}
else if ((ObjDesc->Common.Type == ACPI_TYPE_LOCAL_REGION_FIELD) &&
(ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GPIO))
{
/*
* For GPIO (GeneralPurposeIo), we will bypass the entire field
* mechanism and handoff the bit address and bit width directly to
* the handler. The Address will be the bit offset
* from the previous Connection() operator, making it effectively a
* pin number index. The BitLength is the length of the field, which
* is thus the number of pins.
*/
if (SourceDesc->Common.Type != ACPI_TYPE_INTEGER)
{
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
}
ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
"GPIO FieldWrite [FROM]: (%s:%X), Val %.8X [TO]: Pin %u Bits %u\n",
AcpiUtGetTypeName (SourceDesc->Common.Type),
SourceDesc->Common.Type, (UINT32) SourceDesc->Integer.Value,
ObjDesc->Field.PinNumberIndex, ObjDesc->Field.BitLength));
Buffer = &SourceDesc->Integer.Value;
/* Lock entire transaction if requested */
AcpiExAcquireGlobalLock (ObjDesc->CommonField.FieldFlags);
/* Perform the write */
Status = AcpiExAccessRegion (
ObjDesc, 0, (UINT64 *) Buffer, ACPI_WRITE);
AcpiExReleaseGlobalLock (ObjDesc->CommonField.FieldFlags);
return_ACPI_STATUS (Status);
}
/* Get a pointer to the data to be written */
switch (SourceDesc->Common.Type)
{
case ACPI_TYPE_INTEGER:
Buffer = &SourceDesc->Integer.Value;
Length = sizeof (SourceDesc->Integer.Value);
break;
case ACPI_TYPE_BUFFER:
Buffer = SourceDesc->Buffer.Pointer;
Length = SourceDesc->Buffer.Length;
break;
case ACPI_TYPE_STRING:
Buffer = SourceDesc->String.Pointer;
Length = SourceDesc->String.Length;
break;
default:
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
}
ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
"FieldWrite [FROM]: Obj %p (%s:%X), Buf %p, ByteLen %X\n",
SourceDesc, AcpiUtGetTypeName (SourceDesc->Common.Type),
SourceDesc->Common.Type, Buffer, Length));
ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
"FieldWrite [TO]: Obj %p (%s:%X), BitLen %X, BitOff %X, ByteOff %X\n",
ObjDesc, AcpiUtGetTypeName (ObjDesc->Common.Type),
ObjDesc->Common.Type,
ObjDesc->CommonField.BitLength,
ObjDesc->CommonField.StartFieldBitOffset,
ObjDesc->CommonField.BaseByteOffset));
/* Lock entire transaction if requested */
AcpiExAcquireGlobalLock (ObjDesc->CommonField.FieldFlags);
/* Write to the field */
Status = AcpiExInsertIntoField (ObjDesc, Buffer, Length);
AcpiExReleaseGlobalLock (ObjDesc->CommonField.FieldFlags);
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiExDoConcatenate (
ACPI_OPERAND_OBJECT *ObjDesc1,
ACPI_OPERAND_OBJECT *ObjDesc2,
ACPI_OPERAND_OBJECT **ActualReturnDesc,
ACPI_WALK_STATE *WalkState)
{
ACPI_STATUS Status;
UINT32 i;
ACPI_INTEGER ThisInteger;
ACPI_OPERAND_OBJECT *ReturnDesc;
NATIVE_CHAR *NewBuf;
ACPI_FUNCTION_ENTRY ();
/*
* There are three cases to handle:
*
* 1) Two Integers concatenated to produce a new Buffer
* 2) Two Strings concatenated to produce a new String
* 3) Two Buffers concatenated to produce a new Buffer
*/
switch (ACPI_GET_OBJECT_TYPE (ObjDesc1))
{
case ACPI_TYPE_INTEGER:
/* Result of two Integers is a Buffer */
/* Need enough buffer space for two integers */
ReturnDesc = AcpiUtCreateBufferObject (AcpiGbl_IntegerByteWidth * 2);
if (!ReturnDesc)
{
return (AE_NO_MEMORY);
}
NewBuf = (NATIVE_CHAR *) ReturnDesc->Buffer.Pointer;
/* Convert the first integer */
ThisInteger = ObjDesc1->Integer.Value;
for (i = 0; i < AcpiGbl_IntegerByteWidth; i++)
{
NewBuf[i] = (NATIVE_CHAR) ThisInteger;
ThisInteger >>= 8;
}
/* Convert the second integer */
ThisInteger = ObjDesc2->Integer.Value;
for (; i < (ACPI_MUL_2 (AcpiGbl_IntegerByteWidth)); i++)
{
NewBuf[i] = (NATIVE_CHAR) ThisInteger;
ThisInteger >>= 8;
}
break;
case ACPI_TYPE_STRING:
/* Result of two Strings is a String */
ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_STRING);
if (!ReturnDesc)
{
return (AE_NO_MEMORY);
}
/* Operand0 is string */
NewBuf = ACPI_MEM_ALLOCATE ((ACPI_SIZE) ObjDesc1->String.Length +
(ACPI_SIZE) ObjDesc2->String.Length + 1);
if (!NewBuf)
{
ACPI_REPORT_ERROR
(("ExDoConcatenate: String allocation failure\n"));
Status = AE_NO_MEMORY;
goto Cleanup;
}
/* Concatenate the strings */
ACPI_STRCPY (NewBuf, ObjDesc1->String.Pointer);
ACPI_STRCPY (NewBuf + ObjDesc1->String.Length,
ObjDesc2->String.Pointer);
/* Complete the String object initialization */
ReturnDesc->String.Pointer = NewBuf;
ReturnDesc->String.Length = ObjDesc1->String.Length +
ObjDesc2->String.Length;
break;
case ACPI_TYPE_BUFFER:
/* Result of two Buffers is a Buffer */
ReturnDesc = AcpiUtCreateBufferObject (
(ACPI_SIZE) ObjDesc1->Buffer.Length +
(ACPI_SIZE) ObjDesc2->Buffer.Length);
if (!ReturnDesc)
{
return (AE_NO_MEMORY);
}
NewBuf = (NATIVE_CHAR *) ReturnDesc->Buffer.Pointer;
/* Concatenate the buffers */
ACPI_MEMCPY (NewBuf, ObjDesc1->Buffer.Pointer,
ObjDesc1->Buffer.Length);
ACPI_MEMCPY (NewBuf + ObjDesc1->Buffer.Length, ObjDesc2->Buffer.Pointer,
ObjDesc2->Buffer.Length);
break;
default:
/* Invalid object type, should not happen here */
Status = AE_AML_INTERNAL;
ReturnDesc = NULL;
}
*ActualReturnDesc = ReturnDesc;
return (AE_OK);
Cleanup:
AcpiUtRemoveReference (ReturnDesc);
return (Status);
}
ACPI_STATUS
AcpiExWriteSerialBus (
ACPI_OPERAND_OBJECT *SourceDesc,
ACPI_OPERAND_OBJECT *ObjDesc,
ACPI_OPERAND_OBJECT **ReturnBuffer)
{
ACPI_STATUS Status;
UINT32 BufferLength;
UINT32 DataLength;
void *Buffer;
ACPI_OPERAND_OBJECT *BufferDesc;
UINT32 Function;
UINT16 AccessorType;
ACPI_FUNCTION_TRACE_PTR (ExWriteSerialBus, ObjDesc);
/*
* This is an SMBus, GSBus or IPMI write. We will bypass the entire
* field mechanism and handoff the buffer directly to the handler.
* For these address spaces, the buffer is bidirectional; on a
* write, return data is returned in the same buffer.
*
* Source must be a buffer of sufficient size, these are fixed size:
* ACPI_SMBUS_BUFFER_SIZE, or ACPI_IPMI_BUFFER_SIZE.
*
* Note: SMBus and GSBus protocol type is passed in upper 16-bits
* of Function
*
* Common buffer format:
* Status; (Byte 0 of the data buffer)
* Length; (Byte 1 of the data buffer)
* Data[x-1]: (Bytes 2-x of the arbitrary length data buffer)
*/
if (SourceDesc->Common.Type != ACPI_TYPE_BUFFER)
{
ACPI_ERROR ((AE_INFO,
"SMBus/IPMI/GenericSerialBus write requires "
"Buffer, found type %s",
AcpiUtGetObjectTypeName (SourceDesc)));
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
}
switch (ObjDesc->Field.RegionObj->Region.SpaceId)
{
case ACPI_ADR_SPACE_SMBUS:
BufferLength = ACPI_SMBUS_BUFFER_SIZE;
Function = ACPI_WRITE | (ObjDesc->Field.Attribute << 16);
break;
case ACPI_ADR_SPACE_IPMI:
BufferLength = ACPI_IPMI_BUFFER_SIZE;
Function = ACPI_WRITE;
break;
case ACPI_ADR_SPACE_GSBUS:
AccessorType = ObjDesc->Field.Attribute;
Status = AcpiExGetProtocolBufferLength (AccessorType, &BufferLength);
if (ACPI_FAILURE (Status))
{
ACPI_ERROR ((AE_INFO,
"Invalid protocol ID for GSBus: 0x%4.4X", AccessorType));
return_ACPI_STATUS (Status);
}
/* Add header length to get the full size of the buffer */
BufferLength += ACPI_SERIAL_HEADER_SIZE;
Function = ACPI_WRITE | (AccessorType << 16);
break;
default:
return_ACPI_STATUS (AE_AML_INVALID_SPACE_ID);
}
/* Create the transfer/bidirectional/return buffer */
BufferDesc = AcpiUtCreateBufferObject (BufferLength);
if (!BufferDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
/* Copy the input buffer data to the transfer buffer */
Buffer = BufferDesc->Buffer.Pointer;
DataLength = (BufferLength < SourceDesc->Buffer.Length ?
BufferLength : SourceDesc->Buffer.Length);
memcpy (Buffer, SourceDesc->Buffer.Pointer, DataLength);
/* Lock entire transaction if requested */
AcpiExAcquireGlobalLock (ObjDesc->CommonField.FieldFlags);
/*
* Perform the write (returns status and perhaps data in the
* same buffer)
*/
Status = AcpiExAccessRegion (
ObjDesc, 0, (UINT64 *) Buffer, Function);
AcpiExReleaseGlobalLock (ObjDesc->CommonField.FieldFlags);
*ReturnBuffer = BufferDesc;
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiExReadSerialBus (
ACPI_OPERAND_OBJECT *ObjDesc,
ACPI_OPERAND_OBJECT **ReturnBuffer)
{
ACPI_STATUS Status;
UINT32 BufferLength;
ACPI_OPERAND_OBJECT *BufferDesc;
UINT32 Function;
UINT16 AccessorType;
ACPI_FUNCTION_TRACE_PTR (ExReadSerialBus, ObjDesc);
/*
* This is an SMBus, GSBus or IPMI read. We must create a buffer to
* hold the data and then directly access the region handler.
*
* Note: SMBus and GSBus protocol value is passed in upper 16-bits
* of Function
*
* Common buffer format:
* Status; (Byte 0 of the data buffer)
* Length; (Byte 1 of the data buffer)
* Data[x-1]: (Bytes 2-x of the arbitrary length data buffer)
*/
switch (ObjDesc->Field.RegionObj->Region.SpaceId)
{
case ACPI_ADR_SPACE_SMBUS:
BufferLength = ACPI_SMBUS_BUFFER_SIZE;
Function = ACPI_READ | (ObjDesc->Field.Attribute << 16);
break;
case ACPI_ADR_SPACE_IPMI:
BufferLength = ACPI_IPMI_BUFFER_SIZE;
Function = ACPI_READ;
break;
case ACPI_ADR_SPACE_GSBUS:
AccessorType = ObjDesc->Field.Attribute;
if (AccessorType == AML_FIELD_ATTRIB_RAW_PROCESS_BYTES)
{
ACPI_ERROR ((AE_INFO,
"Invalid direct read using bidirectional write-then-read protocol"));
return_ACPI_STATUS (AE_AML_PROTOCOL);
}
Status = AcpiExGetProtocolBufferLength (AccessorType, &BufferLength);
if (ACPI_FAILURE (Status))
{
ACPI_ERROR ((AE_INFO,
"Invalid protocol ID for GSBus: 0x%4.4X", AccessorType));
return_ACPI_STATUS (Status);
}
/* Add header length to get the full size of the buffer */
BufferLength += ACPI_SERIAL_HEADER_SIZE;
Function = ACPI_READ | (AccessorType << 16);
break;
default:
return_ACPI_STATUS (AE_AML_INVALID_SPACE_ID);
}
/* Create the local transfer buffer that is returned to the caller */
BufferDesc = AcpiUtCreateBufferObject (BufferLength);
if (!BufferDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
/* Lock entire transaction if requested */
AcpiExAcquireGlobalLock (ObjDesc->CommonField.FieldFlags);
/* Call the region handler for the write-then-read */
Status = AcpiExAccessRegion (ObjDesc, 0,
ACPI_CAST_PTR (UINT64, BufferDesc->Buffer.Pointer), Function);
AcpiExReleaseGlobalLock (ObjDesc->CommonField.FieldFlags);
*ReturnBuffer = BufferDesc;
return_ACPI_STATUS (Status);
}