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Diffstat (limited to 'source/components/utilities/utcopy.c')
| -rw-r--r-- | source/components/utilities/utcopy.c | 1078 |
1 files changed, 1078 insertions, 0 deletions
diff --git a/source/components/utilities/utcopy.c b/source/components/utilities/utcopy.c new file mode 100644 index 0000000..ab04a7a --- /dev/null +++ b/source/components/utilities/utcopy.c @@ -0,0 +1,1078 @@ +/****************************************************************************** + * + * Module Name: utcopy - Internal to external object translation utilities + * + *****************************************************************************/ + +/* + * Copyright (C) 2000 - 2012, Intel Corp. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions, and the following disclaimer, + * without modification. + * 2. Redistributions in binary form must reproduce at minimum a disclaimer + * substantially similar to the "NO WARRANTY" disclaimer below + * ("Disclaimer") and any redistribution must be conditioned upon + * including a substantially similar Disclaimer requirement for further + * binary redistribution. + * 3. Neither the names of the above-listed copyright holders nor the names + * of any contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * NO WARRANTY + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGES. + */ + +#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); +} + + |
