--- a/usbdrv/peripheral/ldd/perilddsc/appifwrapper/src/usbcsc_bil.cpp	Tue Aug 31 17:01:47 2010 +0300
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,633 +0,0 @@
-// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
-// All rights reserved.
-// This component and the accompanying materials are made available
-// under the terms of the License "Eclipse Public License v1.0"
-// which accompanies this distribution, and is available
-// at the URL "http://www.eclipse.org/legal/epl-v10.html".
-//
-// Initial Contributors:
-// Nokia Corporation - initial contribution.
-//
-// Contributors:
-//
-// Description:
-// e32\drivers\usbcsc\usbcsc_bil.cpp
-// 
-//
-
-#include <e32std.h>
-#include <e32std_private.h>
-#include <usb/d32usbcsc.h>
-#include <e32debug.h>
-
-/** @file usbcsc_bil.cpp
-
-	Buffer Interface Layer for USB Client Device driver stack, using shared chunks.
-
-	@internalTechnology
-*/
-
-EXPORT_C TInt RDevUsbcScClient::FinalizeInterface()
-	{
-	TInt errorOrhandle = DoControl(EControlRealizeInterface); //returns a error value or chunk handle
-	TInt r = iSharedChunk.SetReturnedHandle(errorOrhandle);
-	iEndpointStatus = 0x00; //all endpoints are closed at the moment
-	iAlternateSetting = 0;
-	iNewAltSetting = 0;
-	iAltSettingSeq = 0;
-	return r;
-	}
-
-
-EXPORT_C TInt RDevUsbcScClient::FinalizeInterface(RChunk*& aChunk)
-	{
-	TInt errorOrhandle = DoControl(EControlRealizeInterface);
-	iSharedChunk.SetReturnedHandle(errorOrhandle);
-	iEndpointStatus = 0x00; //all endpoints are closed at the moment
-	iAlternateSetting = 0;
-	return aChunk->SetReturnedHandle(errorOrhandle);
-	}
-
-
-EXPORT_C TInt RDevUsbcScClient::OpenEndpoint(TEndpointBuffer& aEpB, TInt aEpI)
-	{
-	TUsbcScHdrEndpointRecord* endpointInf = NULL;
-	TBuf8<KUsbDescSize_Endpoint> descriptor;
-	TUsbcScChunkHeader chunkHeader(iSharedChunk);
-	//Do some validity checks
-	if((aEpB.iInState != TEndpointBuffer::ENotValid) && (aEpB.iOutState != TEndpointBuffer::ENotValid))
-		return KErrArgument;
-
-	TInt nEndpoints = chunkHeader.GetNumberOfEndpoints(iAlternateSetting);	
-	if ((aEpI < KEp0Number) && (aEpI > nEndpoints)) // Check endpoint number range 
-		return KErrNotFound;
-
-	if(iEndpointStatus & (1 << aEpI)) // Check that endpoint isn't already opene
-		return KErrInUse;
-
-	if(aEpI == KEp0Number) //endpoint 0
-		{
-		TUsbcScHdrEndpointRecord ep0=  TUsbcScHdrEndpointRecord(KUsbcScEndpointZero, KUsbScHdrEpDirectionBiDir | KUsbScHdrEpTypeControl);
-		aEpB.Construct(this,iSharedChunk.Base(), &ep0 ,aEpI, 
-		(SUsbcScBufferHeader*) ((TUint)iSharedChunk.Base() + (chunkHeader.iBuffers)->Ep0Out()->Offset()));
-
-		aEpB.iBufferStartAddr = (TUint8*) ((TUint)iSharedChunk.Base() + (chunkHeader.iBuffers)->Ep0In()->Offset());
-		aEpB.iSize = chunkHeader.iBuffers->Ep0In()->Size();
-		}
-	else  // If normal endpoint (!ep0)
-		{
-		TUsbcScBufferRecord* buf = 	chunkHeader.GetBuffer(iAlternateSetting,aEpI,endpointInf);
-		if (!buf)
-			return KErrGeneral;
-		// Set up endpoint members
-		aEpB.iBufferStartAddr = (TUint8*)  (buf->Offset() + (TUint)iSharedChunk.Base());
-		aEpB.iSize = buf->Size();
-		TInt r = GetEndpointDescriptor(iAlternateSetting, aEpI, descriptor);
-		if(r != KErrNone) // We need this to be able to calculate alignment
-			{
-			return r;
-			}
-
-		if (endpointInf->Direction()&KUsbScHdrEpDirectionIn)
-			{  							//in case of IN endpoints, first endpoint buffer location points to end offset
-			aEpB.Construct(this,iSharedChunk.Base(),endpointInf,aEpI);
-			if (iInAltSetting==KErrEof)
-			aEpB.iInState=TEndpointBuffer::EEOF;
-
-			}
-		else
-			{
-			SUsbcScBufferHeader *endpointHdr = (SUsbcScBufferHeader *) aEpB.iBufferStartAddr;
-			//In this case,SUsbcScBufferHeader points to full OUT endpoint header 
-			aEpB.Construct(this,iSharedChunk.Base(),endpointInf,aEpI, endpointHdr);
-			}
-		}
-	iEndpointStatus |= (1 << aEpI);	
-
-#ifdef _DEBUG
-	aEpB.Dump();
-	RDebug::Printf("iEndpointStatus: %x \n",iEndpointStatus);
-#endif
-	return KErrNone;
-	}
-
-
-//Internal, used by RDevUsbcScClient::StartNextOutAlternateSetting(...)
-//This drains any old data from an OUT buffer, and gets it ready for reading an ep.
-//aBufferOffset - The offset, into the chunk, that the buffer in question, may be found.
- 
-TInt RDevUsbcScClient::Drain(TUint aBufferOffset)
-{
-	TUint8* base = iSharedChunk.Base();
-	SUsbcScBufferHeader* endpointHdr = (SUsbcScBufferHeader*) (aBufferOffset+base);
-	TUint localTail = endpointHdr->iBilTail;
-	TUsbcScTransferHeader* currentTransfer;
-	TUint16 next = (iAltSettingSeq+1)&0xFFFF;
-	TInt err=KErrNone;
-
-	while (ETrue)
-		{
-		if (localTail == (TUint) endpointHdr->iHead)
-			{
-			err = KErrNotReady;
-			break;
-			}
-		currentTransfer = (TUsbcScTransferHeader*) (base + localTail);
-
-		if (currentTransfer->iAltSettingSeq == next)
-			{
-			iNewAltSetting=currentTransfer->iAltSetting; // record new alt setting
-			break;
-			}
-		else
-			{
-			localTail = currentTransfer->iNext;
-			}
-		} // end while
-	endpointHdr->iBilTail = localTail;
-	endpointHdr->iTail = localTail;
-	return err;
-}
-
-//Internal, used by RDevUsbcScClient::StartNextOutAlternateSetting(...)
-//This method checks that the OUT buffer is ready for reading an ep.
-//aBufferOffset - The offset, into the chunk, that the buffer in question, may be found.
-
-TInt RDevUsbcScClient::Peek(TUint aBufferOffset)
-{
-	TUint8* base = iSharedChunk.Base();
-	SUsbcScBufferHeader* endpointHdr = (SUsbcScBufferHeader*) (aBufferOffset+base);
-	TUint localTail = endpointHdr->iBilTail;
-	TUsbcScTransferHeader* currentTransfer = (TUsbcScTransferHeader*) (base + localTail);
-
-	if ((localTail == (TUint)endpointHdr->iHead) || (currentTransfer->iAltSettingSeq != (iAltSettingSeq+1)&0xFFFF))
-		// if alternate setting has not changed
-		return KErrNotReady;
-	else
-		{
-		iNewAltSetting=currentTransfer->iAltSetting;
-		return KErrNone;
-		}
-}
-
-//Internal, used by RDevUsbcScClient::StartNextOutAlternateSetting(...)
-//This method is called if an alternate setting change happens from a set of ONLY IN endpoints.
-//Used to find the least possible alternate setting it can return to the user, stored in iNewAltSetting
-//Returns the sequence number of the 'latest' alternate setting it can switch to
-
-TInt RDevUsbcScClient::FindNextAlternateSetting()
-	{
-	TUsbcScChunkHeader chunkHeader(iSharedChunk);
-	TUsbcScHdrEndpointRecord* endpointInf = NULL;
-	TUint bufOff;
-	TInt altSet;
-	TInt ep;
-	TInt bufNum;
-
-	RArray <TInt> bufferOffset;	// Array to contain all OUT enpoint buffer offsets
-	// Populate array
-	for (altSet = 0; altSet < chunkHeader.iAltSettings->iNumOfAltSettings ; altSet++)
-		{
-		TInt numEndpoints = chunkHeader.GetNumberOfEndpoints(altSet);
-		for (ep =  1; ep  <= numEndpoints ; ep ++)
-			{
-			bufOff = chunkHeader.GetBuffer(altSet, ep, endpointInf)->Offset();	
-			if ((endpointInf->Direction() & KUsbScHdrEpDirectionOut) && (bufferOffset.Find(bufOff) == KErrNotFound))
-				{
-				bufferOffset.Append(bufOff);
-				}
-			}
-		}
-
-	TInt err = KErrNotFound;
-	TUint16 altSetSeqDelta = 0;
-	TUint16 currentaltSetSeqDelta = 0;
-	TBool noNewSettingFound = ETrue;
-	TInt altSetSeq = iAltSettingSeq;
-	TUint8* base = iSharedChunk.Base();
-
-	for (bufNum = 0; bufNum < bufferOffset.Count(); bufNum++) // Scan all OUT buffers
-		{	
-		SUsbcScBufferHeader* endpointHdr = (SUsbcScBufferHeader*) (bufferOffset[bufNum] + base);
-		TUint localTail = endpointHdr->iBilTail;
-		TUsbcScTransferHeader* currentTransfer;
-		TUint16 next = (iAltSettingSeq+1)&0xFFFF;
-		
-		while (ETrue)
-			{
-			if (localTail == (TUint) endpointHdr->iHead)
-				{
-				break;	// This OUT endpoint buffer has no data, proceed checking with other OUT endpoint buffers
-				}
-			currentTransfer = (TUsbcScTransferHeader*) (base + localTail);
-
-			if (currentTransfer->iAltSettingSeq != iAltSettingSeq) 
-				{
-				if (currentTransfer->iAltSettingSeq == next)
-					{
-					altSetSeq = currentTransfer->iAltSettingSeq;
-					iNewAltSetting = currentTransfer->iAltSetting; // record new alt setting
-					err = KErrNone;
-					break;
-					}
-
-				if (noNewSettingFound)
-					{
-					altSetSeqDelta = Abs(iAltSettingSeq - currentTransfer->iAltSettingSeq);
-					altSetSeq = currentTransfer->iAltSettingSeq;
-					iNewAltSetting = currentTransfer->iAltSetting; // record new alt setting
-					noNewSettingFound = EFalse;
-					}
-				else
-					{
-					currentaltSetSeqDelta = Abs(iAltSettingSeq - currentTransfer->iAltSettingSeq);
-					if (currentaltSetSeqDelta < altSetSeqDelta)
-						{
-						altSetSeqDelta = currentaltSetSeqDelta;
-						altSetSeq = currentTransfer->iAltSettingSeq;
-						iNewAltSetting = currentTransfer->iAltSetting;
-						}
-					}
-				break;
-				}
-			
-			localTail = currentTransfer->iNext;
-			} // end while
-
-		if (!err) // Found an alt set sequence one after iAltSettingSeq
-			{
-			break; // found 'the next' alternate setting, exit for loop
-			}
-		
-		}// for loop
-
-	return altSetSeq;
-	}
-
-EXPORT_C TInt RDevUsbcScClient::StartNextOutAlternateSetting(TBool aFlush)
-	{
-	TUsbcScChunkHeader chunkHeader(iSharedChunk);
-	
-	//if endpoints are still open, return KErrInUse 
-	if((iEndpointStatus&~1) != 0)
-		{
-		return KErrInUse;
-		}
-
-	TInt r;
-	TInt ep;
-	TInt noEp;
-	TUint bufOff;
-	TBool inEndpointSet = ETrue;
-	TUsbcScHdrEndpointRecord* endpointInf = NULL;
-
-	// check if alternate setting contains all IN endpoints
-	noEp = chunkHeader.GetNumberOfEndpoints(iAlternateSetting);
-
-	// for each used buffer. 
-	for (ep=1;ep<=noEp;ep++)
-		{
-		bufOff = chunkHeader.GetBuffer(iAlternateSetting,ep,endpointInf)->Offset();	
-	
-		if (endpointInf->Direction() & KUsbScHdrEpDirectionOut) 
-			{
-			inEndpointSet = EFalse;
-			if (aFlush)
-				r = Drain(bufOff); // we need to remove anythng in the way, and get it ready for reading.
-			else
-				r = Peek(bufOff); // we need to check it is ready for reading!
-			if (r) 
-				return r;
-			}
-		}
-
-
-	TInt altSeq = 0;
-	if (inEndpointSet)	// If all endpoints in the current alternate setting are IN endpoints
-		{	// go through all OUT buffers for alternate setting change
-		altSeq = FindNextAlternateSetting();
-		}
-
-	if((iNewAltSetting == iAlternateSetting) && (!inEndpointSet))
-			{
-			return KErrNotReady;
-			}
-
-	// Find/Set IN alternate setting
-	TInt ret = StartNextInAlternateSetting();
-	SUsbcScAlternateSetting* altrec = ((SUsbcScAlternateSetting*) (&ret));
-
-	if (altrec->iSequence==iAltSettingSeq+1)
-		{
-		if (altrec->iSetting!=iNewAltSetting)
-			return KErrGeneral;
-		iInAltSetting=iNewAltSetting;
-		}
-	else
-		{
-		if (inEndpointSet)
-			{
-			if ((altSeq == iAltSettingSeq) || (iAltSettingSeq == altrec->iSequence))
-				{
-				return KErrNotReady;
-				}
-			else if (altSeq != altrec->iSequence)
-				{
-				iInAltSetting=KErrEof;
-				}
-			}
-		iInAltSetting=KErrEof;
-		}
-
-	iAlternateSetting = iNewAltSetting;
-	iAltSettingSeq += 1;
-
-	return iAlternateSetting;
-	}
-
-
-EXPORT_C TInt RDevUsbcScClient::GetDataTransferChunk(RChunk* & aChunk)
-	{
-	aChunk = &iSharedChunk;
-	return KErrNone;
-	}
-
-// Constructor
-
-EXPORT_C TEndpointBuffer::TEndpointBuffer()
-		:iInState(ENotValid),
-		iOutState(ENotValid),
-		iEndpointNumber(-1),
-		iBufferNum(-1),
-		iBufferStartAddr(0),
-		iSize(0)
-	{
-	}
-
-// Internal, called by RDevUsbcScClient::OpenEndpoint.
-void TEndpointBuffer::Construct(RDevUsbcScClient* aClient, TUint8* aBaseAddr, const TUsbcScHdrEndpointRecord* aEpType , TInt aEndpointNumber,SUsbcScBufferHeader* aEndpointHdr)
-	{
-	iClient		= aClient;
-	iBaseAddr	= (TUint) aBaseAddr;
-	iInState 	= (((aEpType->Direction())&KUsbScHdrEpDirectionIn) ? EValid :  ENotValid);
-	iOutState	= (((aEpType->Direction())&KUsbScHdrEpDirectionOut) ? EValid :  ENotValid);
-	iBufferNum	= (aEpType->iBufferNo==(KUsbcScEndpointZero&0xFF))?KUsbcScEndpointZero:aEpType->iBufferNo;
-	iEndpointNumber = aEndpointNumber;
-
-	iEndpointHdr = aEndpointHdr;
-	};
-
-EXPORT_C TInt TEndpointBuffer::GetInBufferRange(TAny*& aStart, TUint& aSize)
-	{
-	if ((iInState))
-		{
-		return iInState;
-		}
-	aStart= iBufferStartAddr;
-	aSize= iSize;
-	return KErrNone;
-	};
-
-EXPORT_C TInt TEndpointBuffer::GetInBufferRange(TUint& aStart, TUint& aSize)
-	{
-	if ((iInState))
-		return iInState;
-	aStart=	(TUint) iBufferStartAddr - iBaseAddr;
-	aSize= iSize;
-	return KErrNone;
-	}
-
-
-EXPORT_C TInt TEndpointBuffer::GetBuffer(TAny*& aBuffer,TUint& aSize,TBool& aZLP,TRequestStatus& aStatus,TUint aLength)
-	{
-	if (iOutState)
-		return iOutState;
-
-	TUsbcScTransferHeader* currentTransfer;
-	TInt r;
-	do // until we have a transfer with data.
-		{
-		iEndpointHdr->iTail = iEndpointHdr->iBilTail; 
-		if(iEndpointHdr->iBilTail == iEndpointHdr->iHead)  //If no new data, create request
-			{
-			r = iClient->ReadDataNotify(iBufferNum,aStatus);
-			if (r!=KErrCompletion)  // Data could arrive since we checked.
-				return r;
-			}
-		currentTransfer = (TUsbcScTransferHeader*) (iBaseAddr + iEndpointHdr->iBilTail);
-
-		iEndpointHdr->iBilTail = currentTransfer->iNext;
-		aZLP = (currentTransfer->iFlags & KUsbcScShortPacket)!=EFalse;
-
-		if(currentTransfer->iAltSettingSeq != (iClient->iAltSettingSeq))  // if alternate setting has changed
-			{
-			if (currentTransfer->iAltSettingSeq == (iClient->iAltSettingSeq+1))	   //Note- KIS ATM, if multiple alternate setting changes happen
-				iClient->iNewAltSetting = currentTransfer->iAltSetting; //before StartNextOutAlternateSetting is called, 		   
-																	   //this variable will reflect the latest requested AlternateSetting
-
-
-			if (iEndpointNumber != KEp0Number)
-				{
-//				iOutState =  EEOF;	
-				return KErrEof;
-				}
-			else if ((currentTransfer->iBytes==0) && (!aZLP)) 
-				{
-				return KErrAlternateSettingChanged;
-				}
-			}						
-
-		}
-	while ((currentTransfer->iBytes==0) && (!aZLP)); // ignore empty transfers
-
-	aBuffer = currentTransfer->iData.i;
-	aSize = currentTransfer->iBytes;	
-	return (currentTransfer->iFlags & KUsbcScStateChange)?KStateChange:KErrCompletion;	
-	}
-
-EXPORT_C TInt TEndpointBuffer::TakeBuffer(TAny*& aBuffer,TUint& aSize,TBool& aZLP,TRequestStatus& aStatus,TUint aLength)
-	{
-	if (iOutState)
-		return iOutState;
-
-	TUsbcScTransferHeader* currentTransfer;
-	TInt r;
-	do // until we have a transfer with data.
-		{
-		if(iEndpointHdr->iBilTail == iEndpointHdr->iHead)  //If no new data, create request
-			{
-			r = iClient->ReadDataNotify(iBufferNum,aStatus);
-			if (r!=KErrCompletion)  // Data could arrive since we checked.
-				{
-				return r;
-				}
-			}
-
-		currentTransfer = (TUsbcScTransferHeader*) (iBaseAddr + iEndpointHdr->iBilTail);
-		iEndpointHdr->iBilTail = currentTransfer->iNext;
-		aZLP = (currentTransfer->iFlags & KUsbcScShortPacket)!=EFalse; // True if short packet else false 
-
-		if(currentTransfer->iAltSettingSeq != (iClient->iAltSettingSeq))  // if alternate setting has changed
-			{
-			if (currentTransfer->iAltSettingSeq == (iClient->iAltSettingSeq+1))	   //Note- KIS ATM, if multiple alternate setting changes happen
-				iClient->iNewAltSetting = currentTransfer->iAltSetting; //before StartNextOutAlternateSetting is called, 		   
-																	   //this variable will reflect the latest requested AlternateSetting
-			Expire(currentTransfer->iData.i);
-			if (iEndpointNumber != KEp0Number)
-				{
-//				iOutState = EEOF;
-				return KErrEof;
-				}
-			else if ((currentTransfer->iBytes==0) && (!aZLP)) 
-				{
-				return KErrAlternateSettingChanged;
-				}
-
-			}	
-
-		if ((currentTransfer->iBytes==0) && (!aZLP)) // here , if empty transfer with alt setting information, Call expire 
-			{
-			Expire(currentTransfer->iData.i);
-			}
-		}
-	while ((currentTransfer->iBytes==0) && (!aZLP)); // ignore empty transfers
-
-	aBuffer = currentTransfer->iData.i;
-	aSize = currentTransfer->iBytes;
-	return (currentTransfer->iFlags & KUsbcScStateChange)?KStateChange:KErrCompletion;	
-	}
-
-EXPORT_C TInt TEndpointBuffer::Expire()
-	{
-	if (!(iOutState != ENotValid))
-		return iOutState;
-
-	if (iEndpointHdr->iTail != iEndpointHdr->iBilTail)
-		{
-		TUsbcScTransferHeader* currentTransfer = (TUsbcScTransferHeader*) (iBaseAddr + iEndpointHdr->iTail);
-		iEndpointHdr->iTail = currentTransfer->iNext;
-		}
-	return KErrNone;
-	}
-
-EXPORT_C TInt TEndpointBuffer::Expire(TAny* aAddress)
-	{
-	if (!(iOutState != ENotValid))
-		return iOutState;
-
-	TUint headerSize = sizeof(TUsbcScTransferHeader)-4; // TransferHeader includes 4 bytes of data.
-	TInt transferToExpire = ((TUint) aAddress - headerSize);
-	TInt offsetToExpire = transferToExpire - iBaseAddr; 
-
-	TInt currentTail = iEndpointHdr->iTail;
-
-	TInt prevTail = NULL;
-	TBool found = EFalse;
-	while (currentTail != iEndpointHdr->iBilTail)
-		{
-		TUsbcScTransferHeader* currentTransfer = (TUsbcScTransferHeader*) (iBaseAddr + currentTail);
-		if (currentTail == offsetToExpire)		// found which to expire
-			{
-			found = ETrue;
-			// This offset is to be expired
-			if (prevTail == NULL)
-				{
-				// The offset is at the list head
-				iEndpointHdr->iTail = currentTransfer->iNext;	
-				}
-			else
-				{
-				// The offset is NOT at the list head
-				// This leaves a GAP in the buffer which will not be filled unless the 'transfers' before 'currentTail' are expired
-				currentTail = currentTransfer->iNext;
-				TUsbcScTransferHeader* prevTransfer = (TUsbcScTransferHeader*) (iBaseAddr + prevTail);
-				prevTransfer->iNext = currentTail;
-				}
-			break;
-			}
-		prevTail = currentTail;
-		currentTail = currentTransfer->iNext;
-		}
-	return found ? KErrNone : KErrNotFound;
-	}
-
-	
-EXPORT_C TInt TEndpointBuffer::WriteBuffer(TAny* aBuffer,TUint aSize,TBool aZLP,TRequestStatus& aStatus)
-	{
-	if (iInState)
-		return iInState;
-
-	iClient->WriteData(iBufferNum, ((TUint)aBuffer - (TUint)iBaseAddr),aSize,aZLP,aStatus);
-	return KErrNone;
-	}
-
-
-EXPORT_C TInt TEndpointBuffer::WriteBuffer(TUint aOffset,TUint aSize,TBool aZLP,TRequestStatus& aStatus)
-	{
-	if (iInState)
-		return iInState;
-
-	iClient->WriteData(iBufferNum,aOffset,aSize,aZLP,aStatus);
-	return KErrNone;
-	}
-
-
-/**
-Closes the endpoint buffer
-@return			KErrNone if close is successfull
-*/	
-EXPORT_C TInt TEndpointBuffer::Close()
-	{
-	if ((iInState == ENotValid) && (iOutState == ENotValid))
-		return KErrNotFound;
-	if (iOutState != ENotValid)
-		{
-		TUsbcScTransferHeader* currentTransfer = (TUsbcScTransferHeader*) (iBaseAddr + iEndpointHdr->iTail);
-		//Incase of AlternateSetting changes and using TEndpointBuffer::GetBuffer, iTail is always one 'transfer' behind iBilTail
-		//Incase of AlternateSetting changes and using TEndpointBuffer::TakeBuffer, this shuold force the user to update iTail & only then closes the endpoint buffer
-		if (((TInt) currentTransfer->iNext != iEndpointHdr->iBilTail) && (iEndpointHdr->iTail != iEndpointHdr->iBilTail))
-			return KErrNotReady;
-		}
-	iClient->iEndpointStatus &= ~(1 << iEndpointNumber); //reset the bit corresponding to endpoint
-	iInState = ENotValid;
-	iOutState = ENotValid;
-	return KErrNone;
-	}
-
-
-  
-EXPORT_C TUsbcScChunkHeader::TUsbcScChunkHeader(RChunk aChunk)
-	{
-	iChunk = aChunk;
-	iBuffers     = (TUsbcScChunkBuffersHeader*)    (aChunk.Base()+((TUsbcScChunkHdrOffs*)iChunk.Base())->iBuffers);
-	iAltSettings = (TUsbcScChunkAltSettingHeader*) (aChunk.Base()+((TUsbcScChunkHdrOffs*)iChunk.Base())->iAltSettings);
-	}
-
-EXPORT_C TInt TUsbcScChunkHeader::GetNumberOfEndpoints(TInt aAltSetting)
-	{
-	if ((aAltSetting<0) || (aAltSetting>=iAltSettings->iNumOfAltSettings))
-		return KErrArgument;
-	return  *((TInt*) (iAltSettings->iAltTableOffset[aAltSetting] + (TInt) iChunk.Base()));
-	}
-
-
-EXPORT_C TUsbcScBufferRecord* TUsbcScChunkHeader::GetBuffer(TInt aAltSetting, TInt aEndpoint, TUsbcScHdrEndpointRecord*& aEndpointInf)
-	{
-	if ((aAltSetting<0) || (aAltSetting>=iAltSettings->iNumOfAltSettings))
-		return NULL;
-	TInt8* iEndpoint = (TInt8*) (iAltSettings->iAltTableOffset[aAltSetting] + (TInt) iChunk.Base());
-	if ((aEndpoint<=0) || (aEndpoint>*iEndpoint))
-		return NULL;
-	aEndpointInf = (TUsbcScHdrEndpointRecord*) &(iEndpoint[aEndpoint*iAltSettings->iEpRecordSize]);
-	return iBuffers->Buffers(aEndpointInf->iBufferNo);
-	}
-
-
-/* Debug functions */
-
-EXPORT_C void TEndpointBuffer::Dump()
-	{
-	RDebug::Printf("TEndpointBuffer::Dump iBufferStart: 0x%x, iSize: 0x%x, iEndpointNumber: 0x%x, iBufferNum: %d, iInState: 0x%x iOutState: 0x%x\n",
-							iBufferStartAddr,iSize,iEndpointNumber,iBufferNum,iInState,iOutState);
-	}
-