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kolibrios-fun/drivers/devman/acpica/utilities/utcopy.c

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acpica library git-svn-id: svn://kolibrios.org@1498 a494cfbc-eb01-0410-851d-a64ba20cac60
2010-06-18 16:39:07 +02:00
/******************************************************************************
*
* Module Name: utcopy - Internal to external object translation utilities
*
*****************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp.
* All rights reserved.
*
* 2. License
*
* 2.1. This is your license from Intel Corp. under its intellectual property
* rights. You may have additional license terms from the party that provided
* you this software, covering your right to use that party's intellectual
* property rights.
*
* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
* copy of the source code appearing in this file ("Covered Code") an
* irrevocable, perpetual, worldwide license under Intel's copyrights in the
* base code distributed originally by Intel ("Original Intel Code") to copy,
* make derivatives, distribute, use and display any portion of the Covered
* Code in any form, with the right to sublicense such rights; and
*
* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
* license (with the right to sublicense), under only those claims of Intel
* patents that are infringed by the Original Intel Code, to make, use, sell,
* offer to sell, and import the Covered Code and derivative works thereof
* solely to the minimum extent necessary to exercise the above copyright
* license, and in no event shall the patent license extend to any additions
* to or modifications of the Original Intel Code. No other license or right
* is granted directly or by implication, estoppel or otherwise;
*
* The above copyright and patent license is granted only if the following
* conditions are met:
*
* 3. Conditions
*
* 3.1. Redistribution of Source with Rights to Further Distribute Source.
* Redistribution of source code of any substantial portion of the Covered
* Code or modification with rights to further distribute source must include
* the above Copyright Notice, the above License, this list of Conditions,
* and the following Disclaimer and Export Compliance provision. In addition,
* Licensee must cause all Covered Code to which Licensee contributes to
* contain a file documenting the changes Licensee made to create that Covered
* Code and the date of any change. Licensee must include in that file the
* documentation of any changes made by any predecessor Licensee. Licensee
* must include a prominent statement that the modification is derived,
* directly or indirectly, from Original Intel Code.
*
* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
* Redistribution of source code of any substantial portion of the Covered
* Code or modification without rights to further distribute source must
* include the following Disclaimer and Export Compliance provision in the
* documentation and/or other materials provided with distribution. In
* addition, Licensee may not authorize further sublicense of source of any
* portion of the Covered Code, and must include terms to the effect that the
* license from Licensee to its licensee is limited to the intellectual
* property embodied in the software Licensee provides to its licensee, and
* not to intellectual property embodied in modifications its licensee may
* make.
*
* 3.3. Redistribution of Executable. Redistribution in executable form of any
* substantial portion of the Covered Code or modification must reproduce the
* above Copyright Notice, and the following Disclaimer and Export Compliance
* provision in the documentation and/or other materials provided with the
* distribution.
*
* 3.4. Intel retains all right, title, and interest in and to the Original
* Intel Code.
*
* 3.5. Neither the name Intel nor any other trademark owned or controlled by
* Intel shall be used in advertising or otherwise to promote the sale, use or
* other dealings in products derived from or relating to the Covered Code
* without prior written authorization from Intel.
*
* 4. Disclaimer and Export Compliance
*
* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
* PARTICULAR PURPOSE.
*
* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
* LIMITED REMEDY.
*
* 4.3. Licensee shall not export, either directly or indirectly, any of this
* software or system incorporating such software without first obtaining any
* required license or other approval from the U. S. Department of Commerce or
* any other agency or department of the United States Government. In the
* event Licensee exports any such software from the United States or
* re-exports any such software from a foreign destination, Licensee shall
* ensure that the distribution and export/re-export of the software is in
* compliance with all laws, regulations, orders, or other restrictions of the
* U.S. Export Administration Regulations. Licensee agrees that neither it nor
* any of its subsidiaries will export/re-export any technical data, process,
* software, or service, directly or indirectly, to any country for which the
* United States government or any agency thereof requires an export license,
* other governmental approval, or letter of assurance, without first obtaining
* such license, approval or letter.
*
*****************************************************************************/
#define __UTCOPY_C__
#include "acpi.h"
#include "accommon.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME ("utcopy")
/* Local prototypes */
static ACPI_STATUS
AcpiUtCopyIsimpleToEsimple (
ACPI_OPERAND_OBJECT *InternalObject,
ACPI_OBJECT *ExternalObject,
UINT8 *DataSpace,
ACPI_SIZE *BufferSpaceUsed);
static ACPI_STATUS
AcpiUtCopyIelementToIelement (
UINT8 ObjectType,
ACPI_OPERAND_OBJECT *SourceObject,
ACPI_GENERIC_STATE *State,
void *Context);
static ACPI_STATUS
AcpiUtCopyIpackageToEpackage (
ACPI_OPERAND_OBJECT *InternalObject,
UINT8 *Buffer,
ACPI_SIZE *SpaceUsed);
static ACPI_STATUS
AcpiUtCopyEsimpleToIsimple(
ACPI_OBJECT *UserObj,
ACPI_OPERAND_OBJECT **ReturnObj);
static ACPI_STATUS
AcpiUtCopyEpackageToIpackage (
ACPI_OBJECT *ExternalObject,
ACPI_OPERAND_OBJECT **InternalObject);
static ACPI_STATUS
AcpiUtCopySimpleObject (
ACPI_OPERAND_OBJECT *SourceDesc,
ACPI_OPERAND_OBJECT *DestDesc);
static ACPI_STATUS
AcpiUtCopyIelementToEelement (
UINT8 ObjectType,
ACPI_OPERAND_OBJECT *SourceObject,
ACPI_GENERIC_STATE *State,
void *Context);
static ACPI_STATUS
AcpiUtCopyIpackageToIpackage (
ACPI_OPERAND_OBJECT *SourceObj,
ACPI_OPERAND_OBJECT *DestObj,
ACPI_WALK_STATE *WalkState);
/*******************************************************************************
*
* FUNCTION: AcpiUtCopyIsimpleToEsimple
*
* PARAMETERS: InternalObject - Source object to be copied
* ExternalObject - Where to return the copied object
* DataSpace - Where object data is returned (such as
* buffer and string data)
* BufferSpaceUsed - Length of DataSpace that was used
*
* RETURN: Status
*
* DESCRIPTION: This function is called to copy a simple internal object to
* an external object.
*
* The DataSpace buffer is assumed to have sufficient space for
* the object.
*
******************************************************************************/
static ACPI_STATUS
AcpiUtCopyIsimpleToEsimple (
ACPI_OPERAND_OBJECT *InternalObject,
ACPI_OBJECT *ExternalObject,
UINT8 *DataSpace,
ACPI_SIZE *BufferSpaceUsed)
{
ACPI_STATUS Status = AE_OK;
ACPI_FUNCTION_TRACE (UtCopyIsimpleToEsimple);
*BufferSpaceUsed = 0;
/*
* Check for NULL object case (could be an uninitialized
* package element)
*/
if (!InternalObject)
{
return_ACPI_STATUS (AE_OK);
}
/* Always clear the external object */
ACPI_MEMSET (ExternalObject, 0, sizeof (ACPI_OBJECT));
/*
* In general, the external object will be the same type as
* the internal object
*/
ExternalObject->Type = InternalObject->Common.Type;
/* However, only a limited number of external types are supported */
switch (InternalObject->Common.Type)
{
case ACPI_TYPE_STRING:
ExternalObject->String.Pointer = (char *) DataSpace;
ExternalObject->String.Length = InternalObject->String.Length;
*BufferSpaceUsed = ACPI_ROUND_UP_TO_NATIVE_WORD (
(ACPI_SIZE) InternalObject->String.Length + 1);
ACPI_MEMCPY ((void *) DataSpace,
(void *) InternalObject->String.Pointer,
(ACPI_SIZE) InternalObject->String.Length + 1);
break;
case ACPI_TYPE_BUFFER:
ExternalObject->Buffer.Pointer = DataSpace;
ExternalObject->Buffer.Length = InternalObject->Buffer.Length;
*BufferSpaceUsed = ACPI_ROUND_UP_TO_NATIVE_WORD (
InternalObject->String.Length);
ACPI_MEMCPY ((void *) DataSpace,
(void *) InternalObject->Buffer.Pointer,
InternalObject->Buffer.Length);
break;
case ACPI_TYPE_INTEGER:
ExternalObject->Integer.Value = InternalObject->Integer.Value;
break;
case ACPI_TYPE_LOCAL_REFERENCE:
/* This is an object reference. */
switch (InternalObject->Reference.Class)
{
case ACPI_REFCLASS_NAME:
/*
* For namepath, return the object handle ("reference")
* We are referring to the namespace node
*/
ExternalObject->Reference.Handle =
InternalObject->Reference.Node;
ExternalObject->Reference.ActualType =
AcpiNsGetType (InternalObject->Reference.Node);
break;
default:
/* All other reference types are unsupported */
return_ACPI_STATUS (AE_TYPE);
}
break;
case ACPI_TYPE_PROCESSOR:
ExternalObject->Processor.ProcId =
InternalObject->Processor.ProcId;
ExternalObject->Processor.PblkAddress =
InternalObject->Processor.Address;
ExternalObject->Processor.PblkLength =
InternalObject->Processor.Length;
break;
case ACPI_TYPE_POWER:
ExternalObject->PowerResource.SystemLevel =
InternalObject->PowerResource.SystemLevel;
ExternalObject->PowerResource.ResourceOrder =
InternalObject->PowerResource.ResourceOrder;
break;
default:
/*
* There is no corresponding external object type
*/
ACPI_ERROR ((AE_INFO,
"Unsupported object type, cannot convert to external object: %s",
AcpiUtGetTypeName (InternalObject->Common.Type)));
return_ACPI_STATUS (AE_SUPPORT);
}
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiUtCopyIelementToEelement
*
* PARAMETERS: ACPI_PKG_CALLBACK
*
* RETURN: Status
*
* DESCRIPTION: Copy one package element to another package element
*
******************************************************************************/
static ACPI_STATUS
AcpiUtCopyIelementToEelement (
UINT8 ObjectType,
ACPI_OPERAND_OBJECT *SourceObject,
ACPI_GENERIC_STATE *State,
void *Context)
{
ACPI_STATUS Status = AE_OK;
ACPI_PKG_INFO *Info = (ACPI_PKG_INFO *) Context;
ACPI_SIZE ObjectSpace;
UINT32 ThisIndex;
ACPI_OBJECT *TargetObject;
ACPI_FUNCTION_ENTRY ();
ThisIndex = State->Pkg.Index;
TargetObject = (ACPI_OBJECT *)
&((ACPI_OBJECT *)(State->Pkg.DestObject))->Package.Elements[ThisIndex];
switch (ObjectType)
{
case ACPI_COPY_TYPE_SIMPLE:
/*
* This is a simple or null object
*/
Status = AcpiUtCopyIsimpleToEsimple (SourceObject,
TargetObject, Info->FreeSpace, &ObjectSpace);
if (ACPI_FAILURE (Status))
{
return (Status);
}
break;
case ACPI_COPY_TYPE_PACKAGE:
/*
* Build the package object
*/
TargetObject->Type = ACPI_TYPE_PACKAGE;
TargetObject->Package.Count = SourceObject->Package.Count;
TargetObject->Package.Elements =
ACPI_CAST_PTR (ACPI_OBJECT, Info->FreeSpace);
/*
* Pass the new package object back to the package walk routine
*/
State->Pkg.ThisTargetObj = TargetObject;
/*
* Save space for the array of objects (Package elements)
* update the buffer length counter
*/
ObjectSpace = ACPI_ROUND_UP_TO_NATIVE_WORD (
(ACPI_SIZE) TargetObject->Package.Count *
sizeof (ACPI_OBJECT));
break;
default:
return (AE_BAD_PARAMETER);
}
Info->FreeSpace += ObjectSpace;
Info->Length += ObjectSpace;
return (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiUtCopyIpackageToEpackage
*
* PARAMETERS: InternalObject - Pointer to the object we are returning
* Buffer - Where the object is returned
* SpaceUsed - Where the object length is returned
*
* RETURN: Status
*
* DESCRIPTION: This function is called to place a package object in a user
* buffer. A package object by definition contains other objects.
*
* The buffer is assumed to have sufficient space for the object.
* The caller must have verified the buffer length needed using
* the AcpiUtGetObjectSize function before calling this function.
*
******************************************************************************/
static ACPI_STATUS
AcpiUtCopyIpackageToEpackage (
ACPI_OPERAND_OBJECT *InternalObject,
UINT8 *Buffer,
ACPI_SIZE *SpaceUsed)
{
ACPI_OBJECT *ExternalObject;
ACPI_STATUS Status;
ACPI_PKG_INFO Info;
ACPI_FUNCTION_TRACE (UtCopyIpackageToEpackage);
/*
* First package at head of the buffer
*/
ExternalObject = ACPI_CAST_PTR (ACPI_OBJECT, Buffer);
/*
* Free space begins right after the first package
*/
Info.Length = ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT));
Info.FreeSpace = Buffer + ACPI_ROUND_UP_TO_NATIVE_WORD (
sizeof (ACPI_OBJECT));
Info.ObjectSpace = 0;
Info.NumPackages = 1;
ExternalObject->Type = InternalObject->Common.Type;
ExternalObject->Package.Count = InternalObject->Package.Count;
ExternalObject->Package.Elements = ACPI_CAST_PTR (ACPI_OBJECT,
Info.FreeSpace);
/*
* Leave room for an array of ACPI_OBJECTS in the buffer
* and move the free space past it
*/
Info.Length += (ACPI_SIZE) ExternalObject->Package.Count *
ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT));
Info.FreeSpace += ExternalObject->Package.Count *
ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT));
Status = AcpiUtWalkPackageTree (InternalObject, ExternalObject,
AcpiUtCopyIelementToEelement, &Info);
*SpaceUsed = Info.Length;
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiUtCopyIobjectToEobject
*
* PARAMETERS: InternalObject - The internal object to be converted
* RetBuffer - Where the object is returned
*
* RETURN: Status
*
* DESCRIPTION: This function is called to build an API object to be returned
* to the caller.
*
******************************************************************************/
ACPI_STATUS
AcpiUtCopyIobjectToEobject (
ACPI_OPERAND_OBJECT *InternalObject,
ACPI_BUFFER *RetBuffer)
{
ACPI_STATUS Status;
ACPI_FUNCTION_TRACE (UtCopyIobjectToEobject);
if (InternalObject->Common.Type == ACPI_TYPE_PACKAGE)
{
/*
* Package object: Copy all subobjects (including
* nested packages)
*/
Status = AcpiUtCopyIpackageToEpackage (InternalObject,
RetBuffer->Pointer, &RetBuffer->Length);
}
else
{
/*
* Build a simple object (no nested objects)
*/
Status = AcpiUtCopyIsimpleToEsimple (InternalObject,
ACPI_CAST_PTR (ACPI_OBJECT, RetBuffer->Pointer),
ACPI_ADD_PTR (UINT8, RetBuffer->Pointer,
ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT))),
&RetBuffer->Length);
/*
* build simple does not include the object size in the length
* so we add it in here
*/
RetBuffer->Length += sizeof (ACPI_OBJECT);
}
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiUtCopyEsimpleToIsimple
*
* PARAMETERS: ExternalObject - The external object to be converted
* RetInternalObject - Where the internal object is returned
*
* RETURN: Status
*
* DESCRIPTION: This function copies an external object to an internal one.
* NOTE: Pointers can be copied, we don't need to copy data.
* (The pointers have to be valid in our address space no matter
* what we do with them!)
*
******************************************************************************/
static ACPI_STATUS
AcpiUtCopyEsimpleToIsimple (
ACPI_OBJECT *ExternalObject,
ACPI_OPERAND_OBJECT **RetInternalObject)
{
ACPI_OPERAND_OBJECT *InternalObject;
ACPI_FUNCTION_TRACE (UtCopyEsimpleToIsimple);
/*
* Simple types supported are: String, Buffer, Integer
*/
switch (ExternalObject->Type)
{
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_LOCAL_REFERENCE:
InternalObject = AcpiUtCreateInternalObject (
(UINT8) ExternalObject->Type);
if (!InternalObject)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
break;
case ACPI_TYPE_ANY: /* This is the case for a NULL object */
*RetInternalObject = NULL;
return_ACPI_STATUS (AE_OK);
default:
/* All other types are not supported */
ACPI_ERROR ((AE_INFO,
"Unsupported object type, cannot convert to internal object: %s",
AcpiUtGetTypeName (ExternalObject->Type)));
return_ACPI_STATUS (AE_SUPPORT);
}
/* Must COPY string and buffer contents */
switch (ExternalObject->Type)
{
case ACPI_TYPE_STRING:
InternalObject->String.Pointer =
ACPI_ALLOCATE_ZEROED ((ACPI_SIZE)
ExternalObject->String.Length + 1);
if (!InternalObject->String.Pointer)
{
goto ErrorExit;
}
ACPI_MEMCPY (InternalObject->String.Pointer,
ExternalObject->String.Pointer,
ExternalObject->String.Length);
InternalObject->String.Length = ExternalObject->String.Length;
break;
case ACPI_TYPE_BUFFER:
InternalObject->Buffer.Pointer =
ACPI_ALLOCATE_ZEROED (ExternalObject->Buffer.Length);
if (!InternalObject->Buffer.Pointer)
{
goto ErrorExit;
}
ACPI_MEMCPY (InternalObject->Buffer.Pointer,
ExternalObject->Buffer.Pointer,
ExternalObject->Buffer.Length);
InternalObject->Buffer.Length = ExternalObject->Buffer.Length;
/* Mark buffer data valid */
InternalObject->Buffer.Flags |= AOPOBJ_DATA_VALID;
break;
case ACPI_TYPE_INTEGER:
InternalObject->Integer.Value = ExternalObject->Integer.Value;
break;
case ACPI_TYPE_LOCAL_REFERENCE:
/* TBD: should validate incoming handle */
InternalObject->Reference.Class = ACPI_REFCLASS_NAME;
InternalObject->Reference.Node = ExternalObject->Reference.Handle;
break;
default:
/* Other types can't get here */
break;
}
*RetInternalObject = InternalObject;
return_ACPI_STATUS (AE_OK);
ErrorExit:
AcpiUtRemoveReference (InternalObject);
return_ACPI_STATUS (AE_NO_MEMORY);
}
/*******************************************************************************
*
* FUNCTION: AcpiUtCopyEpackageToIpackage
*
* PARAMETERS: ExternalObject - The external object to be converted
* InternalObject - Where the internal object is returned
*
* RETURN: Status
*
* DESCRIPTION: Copy an external package object to an internal package.
* Handles nested packages.
*
******************************************************************************/
static ACPI_STATUS
AcpiUtCopyEpackageToIpackage (
ACPI_OBJECT *ExternalObject,
ACPI_OPERAND_OBJECT **InternalObject)
{
ACPI_STATUS Status = AE_OK;
ACPI_OPERAND_OBJECT *PackageObject;
ACPI_OPERAND_OBJECT **PackageElements;
UINT32 i;
ACPI_FUNCTION_TRACE (UtCopyEpackageToIpackage);
/* Create the package object */
PackageObject = AcpiUtCreatePackageObject (ExternalObject->Package.Count);
if (!PackageObject)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
PackageElements = PackageObject->Package.Elements;
/*
* Recursive implementation. Probably ok, since nested external packages
* as parameters should be very rare.
*/
for (i = 0; i < ExternalObject->Package.Count; i++)
{
Status = AcpiUtCopyEobjectToIobject (
&ExternalObject->Package.Elements[i],
&PackageElements[i]);
if (ACPI_FAILURE (Status))
{
/* Truncate package and delete it */
PackageObject->Package.Count = i;
PackageElements[i] = NULL;
AcpiUtRemoveReference (PackageObject);
return_ACPI_STATUS (Status);
}
}
/* Mark package data valid */
PackageObject->Package.Flags |= AOPOBJ_DATA_VALID;
*InternalObject = PackageObject;
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiUtCopyEobjectToIobject
*
* PARAMETERS: ExternalObject - The external object to be converted
* InternalObject - Where the internal object is returned
*
* RETURN: Status
*
* DESCRIPTION: Converts an external object to an internal object.
*
******************************************************************************/
ACPI_STATUS
AcpiUtCopyEobjectToIobject (
ACPI_OBJECT *ExternalObject,
ACPI_OPERAND_OBJECT **InternalObject)
{
ACPI_STATUS Status;
ACPI_FUNCTION_TRACE (UtCopyEobjectToIobject);
if (ExternalObject->Type == ACPI_TYPE_PACKAGE)
{
Status = AcpiUtCopyEpackageToIpackage (ExternalObject, InternalObject);
}
else
{
/*
* Build a simple object (no nested objects)
*/
Status = AcpiUtCopyEsimpleToIsimple (ExternalObject, InternalObject);
}
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiUtCopySimpleObject
*
* PARAMETERS: SourceDesc - The internal object to be copied
* DestDesc - New target object
*
* RETURN: Status
*
* DESCRIPTION: Simple copy of one internal object to another. Reference count
* of the destination object is preserved.
*
******************************************************************************/
static ACPI_STATUS
AcpiUtCopySimpleObject (
ACPI_OPERAND_OBJECT *SourceDesc,
ACPI_OPERAND_OBJECT *DestDesc)
{
UINT16 ReferenceCount;
ACPI_OPERAND_OBJECT *NextObject;
ACPI_STATUS Status;
ACPI_SIZE CopySize;
/* Save fields from destination that we don't want to overwrite */
ReferenceCount = DestDesc->Common.ReferenceCount;
NextObject = DestDesc->Common.NextObject;
/*
* Copy the entire source object over the destination object.
* Note: Source can be either an operand object or namespace node.
*/
CopySize = sizeof (ACPI_OPERAND_OBJECT);
if (ACPI_GET_DESCRIPTOR_TYPE (SourceDesc) == ACPI_DESC_TYPE_NAMED)
{
CopySize = sizeof (ACPI_NAMESPACE_NODE);
}
ACPI_MEMCPY (ACPI_CAST_PTR (char, DestDesc),
ACPI_CAST_PTR (char, SourceDesc), CopySize);
/* Restore the saved fields */
DestDesc->Common.ReferenceCount = ReferenceCount;
DestDesc->Common.NextObject = NextObject;
/* New object is not static, regardless of source */
DestDesc->Common.Flags &= ~AOPOBJ_STATIC_POINTER;
/* Handle the objects with extra data */
switch (DestDesc->Common.Type)
{
case ACPI_TYPE_BUFFER:
/*
* Allocate and copy the actual buffer if and only if:
* 1) There is a valid buffer pointer
* 2) The buffer has a length > 0
*/
if ((SourceDesc->Buffer.Pointer) &&
(SourceDesc->Buffer.Length))
{
DestDesc->Buffer.Pointer =
ACPI_ALLOCATE (SourceDesc->Buffer.Length);
if (!DestDesc->Buffer.Pointer)
{
return (AE_NO_MEMORY);
}
/* Copy the actual buffer data */
ACPI_MEMCPY (DestDesc->Buffer.Pointer,
SourceDesc->Buffer.Pointer, SourceDesc->Buffer.Length);
}
break;
case ACPI_TYPE_STRING:
/*
* Allocate and copy the actual string if and only if:
* 1) There is a valid string pointer
* (Pointer to a NULL string is allowed)
*/
if (SourceDesc->String.Pointer)
{
DestDesc->String.Pointer =
ACPI_ALLOCATE ((ACPI_SIZE) SourceDesc->String.Length + 1);
if (!DestDesc->String.Pointer)
{
return (AE_NO_MEMORY);
}
/* Copy the actual string data */
ACPI_MEMCPY (DestDesc->String.Pointer, SourceDesc->String.Pointer,
(ACPI_SIZE) SourceDesc->String.Length + 1);
}
break;
case ACPI_TYPE_LOCAL_REFERENCE:
/*
* We copied the reference object, so we now must add a reference
* to the object pointed to by the reference
*
* DDBHandle reference (from Load/LoadTable) is a special reference,
* it does not have a Reference.Object, so does not need to
* increase the reference count
*/
if (SourceDesc->Reference.Class == ACPI_REFCLASS_TABLE)
{
break;
}
AcpiUtAddReference (SourceDesc->Reference.Object);
break;
case ACPI_TYPE_REGION:
/*
* We copied the Region Handler, so we now must add a reference
*/
if (DestDesc->Region.Handler)
{
AcpiUtAddReference (DestDesc->Region.Handler);
}
break;
/*
* For Mutex and Event objects, we cannot simply copy the underlying
* OS object. We must create a new one.
*/
case ACPI_TYPE_MUTEX:
Status = AcpiOsCreateMutex (&DestDesc->Mutex.OsMutex);
if (ACPI_FAILURE (Status))
{
return (Status);
}
break;
case ACPI_TYPE_EVENT:
Status = AcpiOsCreateSemaphore (ACPI_NO_UNIT_LIMIT, 0,
&DestDesc->Event.OsSemaphore);
if (ACPI_FAILURE (Status))
{
return (Status);
}
break;
default:
/* Nothing to do for other simple objects */
break;
}
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiUtCopyIelementToIelement
*
* PARAMETERS: ACPI_PKG_CALLBACK
*
* RETURN: Status
*
* DESCRIPTION: Copy one package element to another package element
*
******************************************************************************/
static ACPI_STATUS
AcpiUtCopyIelementToIelement (
UINT8 ObjectType,
ACPI_OPERAND_OBJECT *SourceObject,
ACPI_GENERIC_STATE *State,
void *Context)
{
ACPI_STATUS Status = AE_OK;
UINT32 ThisIndex;
ACPI_OPERAND_OBJECT **ThisTargetPtr;
ACPI_OPERAND_OBJECT *TargetObject;
ACPI_FUNCTION_ENTRY ();
ThisIndex = State->Pkg.Index;
ThisTargetPtr = (ACPI_OPERAND_OBJECT **)
&State->Pkg.DestObject->Package.Elements[ThisIndex];
switch (ObjectType)
{
case ACPI_COPY_TYPE_SIMPLE:
/* A null source object indicates a (legal) null package element */
if (SourceObject)
{
/*
* This is a simple object, just copy it
*/
TargetObject = AcpiUtCreateInternalObject (
SourceObject->Common.Type);
if (!TargetObject)
{
return (AE_NO_MEMORY);
}
Status = AcpiUtCopySimpleObject (SourceObject, TargetObject);
if (ACPI_FAILURE (Status))
{
goto ErrorExit;
}
*ThisTargetPtr = TargetObject;
}
else
{
/* Pass through a null element */
*ThisTargetPtr = NULL;
}
break;
case ACPI_COPY_TYPE_PACKAGE:
/*
* This object is a package - go down another nesting level
* Create and build the package object
*/
TargetObject = AcpiUtCreatePackageObject (SourceObject->Package.Count);
if (!TargetObject)
{
return (AE_NO_MEMORY);
}
TargetObject->Common.Flags = SourceObject->Common.Flags;
/* Pass the new package object back to the package walk routine */
State->Pkg.ThisTargetObj = TargetObject;
/* Store the object pointer in the parent package object */
*ThisTargetPtr = TargetObject;
break;
default:
return (AE_BAD_PARAMETER);
}
return (Status);
ErrorExit:
AcpiUtRemoveReference (TargetObject);
return (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiUtCopyIpackageToIpackage
*
* PARAMETERS: SourceObj - Pointer to the source package object
* DestObj - Where the internal object is returned
* WalkState - Current Walk state descriptor
*
* RETURN: Status
*
* DESCRIPTION: This function is called to copy an internal package object
* into another internal package object.
*
******************************************************************************/
static ACPI_STATUS
AcpiUtCopyIpackageToIpackage (
ACPI_OPERAND_OBJECT *SourceObj,
ACPI_OPERAND_OBJECT *DestObj,
ACPI_WALK_STATE *WalkState)
{
ACPI_STATUS Status = AE_OK;
ACPI_FUNCTION_TRACE (UtCopyIpackageToIpackage);
DestObj->Common.Type = SourceObj->Common.Type;
DestObj->Common.Flags = SourceObj->Common.Flags;
DestObj->Package.Count = SourceObj->Package.Count;
/*
* Create the object array and walk the source package tree
*/
DestObj->Package.Elements = ACPI_ALLOCATE_ZEROED (
((ACPI_SIZE) SourceObj->Package.Count + 1) *
sizeof (void *));
if (!DestObj->Package.Elements)
{
ACPI_ERROR ((AE_INFO, "Package allocation failure"));
return_ACPI_STATUS (AE_NO_MEMORY);
}
/*
* Copy the package element-by-element by walking the package "tree".
* This handles nested packages of arbitrary depth.
*/
Status = AcpiUtWalkPackageTree (SourceObj, DestObj,
AcpiUtCopyIelementToIelement, WalkState);
if (ACPI_FAILURE (Status))
{
/* On failure, delete the destination package object */
AcpiUtRemoveReference (DestObj);
}
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiUtCopyIobjectToIobject
*
* PARAMETERS: SourceDesc - The internal object to be copied
* DestDesc - Where the copied object is returned
* WalkState - Current walk state
*
* RETURN: Status
*
* DESCRIPTION: Copy an internal object to a new internal object
*
******************************************************************************/
ACPI_STATUS
AcpiUtCopyIobjectToIobject (
ACPI_OPERAND_OBJECT *SourceDesc,
ACPI_OPERAND_OBJECT **DestDesc,
ACPI_WALK_STATE *WalkState)
{
ACPI_STATUS Status = AE_OK;
ACPI_FUNCTION_TRACE (UtCopyIobjectToIobject);
/* Create the top level object */
*DestDesc = AcpiUtCreateInternalObject (SourceDesc->Common.Type);
if (!*DestDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
/* Copy the object and possible subobjects */
if (SourceDesc->Common.Type == ACPI_TYPE_PACKAGE)
{
Status = AcpiUtCopyIpackageToIpackage (SourceDesc, *DestDesc,
WalkState);
}
else
{
Status = AcpiUtCopySimpleObject (SourceDesc, *DestDesc);
}
return_ACPI_STATUS (Status);
}
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