diff -r 2f92ad2dc5db -r 1df514389a47 kernel/eka/drivers/usbho/usbdi_utils/zerocopymetadata.inl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/kernel/eka/drivers/usbho/usbdi_utils/zerocopymetadata.inl	Wed Apr 14 17:22:59 2010 +0300
@@ -0,0 +1,141 @@
+// Copyright (c) 2007-2009 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.
+//
+// Description:
+//
+
+/**
+ @file
+ @internalComponent
+*/
+
+
+template<typename XReturnType, TInt XFieldOffset>
+inline XReturnType& Field(TAddrType aBase, TInt aHeaderOffset)
+	{
+	TInt offset = aHeaderOffset + XFieldOffset;
+	return *reinterpret_cast<XReturnType*>(aBase + offset);
+	}
+
+
+//
+// UsbZeroCopyChunkHeaderBase
+//
+
+inline RUsbTransferDescriptor::TTransferType& UsbZeroCopyChunkHeaderBase::TransferType(TAddrType aBase, TInt aHeaderOffset)
+	{
+	return Field<RUsbTransferDescriptor::TTransferType, ETransferType>(aBase, aHeaderOffset);
+	}
+
+
+
+//
+// UsbZeroCopyBulkIntrChunkHeader
+//
+
+inline TInt UsbZeroCopyBulkIntrChunkHeader::HeaderSize()
+	{
+	__ASSERT_COMPILE(EHeaderSize % sizeof(TInt) == 0);
+	return EHeaderSize;
+	}
+
+
+inline TInt& UsbZeroCopyBulkIntrChunkHeader::DataOffset(TAddrType aBase, TInt aHeaderOffset)
+	{
+	return Field<TInt, EDataOffset>(aBase, aHeaderOffset);
+	}
+
+inline TInt& UsbZeroCopyBulkIntrChunkHeader::DataLength(TAddrType aBase, TInt aHeaderOffset)
+	{
+	return Field<TInt, EDataLength>(aBase, aHeaderOffset);
+	}
+
+inline TInt& UsbZeroCopyBulkIntrChunkHeader::DataMaxLength(TAddrType aBase, TInt aHeaderOffset)
+	{
+	return Field<TInt, EDataMaxLength>(aBase, aHeaderOffset);
+	}
+	
+inline RUsbTransferDescriptor::TZlpStatus& UsbZeroCopyBulkIntrChunkHeader::ZlpStatus(TAddrType aBase, TInt aHeaderOffset)
+	{
+	return Field<RUsbTransferDescriptor::TZlpStatus, EZlpStatus>(aBase, aHeaderOffset);
+	}
+
+
+
+//
+// UsbZeroCopyIsocChunkHeader
+//
+
+inline TInt UsbZeroCopyIsocChunkHeader::HeaderSize()
+	{
+	__ASSERT_COMPILE(EHeaderSize % sizeof(TInt) == 0);
+	return EHeaderSize;
+	}
+
+
+inline TInt& UsbZeroCopyIsocChunkHeader::FirstElementOffset(TAddrType aBase, TInt aHeaderOffset)
+	{
+	return Field<TInt, EFirstElementOffset>(aBase, aHeaderOffset);
+	}
+
+inline TInt& UsbZeroCopyIsocChunkHeader::MaxNumPackets(TAddrType aBase, TInt aHeaderOffset)
+	{
+	return Field<TInt, EMaxNumPackets>(aBase, aHeaderOffset);
+	}
+
+inline TInt& UsbZeroCopyIsocChunkHeader::MaxPacketSize(TAddrType aBase, TInt aHeaderOffset)
+	{
+	return Field<TInt, EMaxPacketSize>(aBase, aHeaderOffset);
+	}
+
+inline TInt& UsbZeroCopyIsocChunkHeader::LengthsOffset(TAddrType aBase, TInt aHeaderOffset)
+	{
+	return Field<TInt, ELengthsOffset>(aBase, aHeaderOffset);
+	}
+	
+inline TInt& UsbZeroCopyIsocChunkHeader::ReqLenOffset(TAddrType aBase, TInt aHeaderOffset)
+	{
+	return Field<TInt, EReqLenOffset>(aBase, aHeaderOffset);
+	}
+	
+inline TInt& UsbZeroCopyIsocChunkHeader::ResultsOffset(TAddrType aBase, TInt aHeaderOffset)
+	{
+	return Field<TInt, EResultsOffset>(aBase, aHeaderOffset);
+	}
+
+
+
+//
+// UsbZeroCopyIsocChunkHeader
+//
+
+inline TInt UsbZeroCopyIsocChunkElement::ElementSize()
+	{
+	__ASSERT_COMPILE(EElementSize % sizeof(TInt) == 0);
+	return EElementSize;
+	}
+
+
+inline TInt& UsbZeroCopyIsocChunkElement::DataOffset(TAddrType aBase, TInt aHeaderOffset)
+	{
+	return Field<TInt, EDataOffset>(aBase, aHeaderOffset);
+	}
+
+inline TInt& UsbZeroCopyIsocChunkElement::NumPackets(TAddrType aBase, TInt aHeaderOffset)
+	{
+	return Field<TInt, ENumPackets>(aBase, aHeaderOffset);
+	}
+
+inline TInt& UsbZeroCopyIsocChunkElement::NextElementOffset(TAddrType aBase, TInt aHeaderOffset)
+	{
+	return Field<TInt, ENextElementOffset>(aBase, aHeaderOffset);
+	}
+	
+