--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/cbsref/csyrefplugins/csy27010/src/PortC32Interface.cpp Tue Aug 31 16:23:08 2010 +0300
@@ -0,0 +1,368 @@
+//
+// * Copyright 2004 Neusoft America Inc.
+// * All rights reserved.
+// * This component and the accompanying materials are made available
+// * under the terms of the Eclipse Public License v1.0
+// * which accompanies this distribution, and is available
+// * at the URL "http://www.eclipse.org/legal/epl-v10.html".
+// *
+// * Contributors:
+// * Keith Collins (Neusoft America Inc.) original software development and additional code and modifications.
+// * Thomas Gahagen (Neusoft America Inc.) additional code and modifications.
+// * Zhen Yuan (Neusoft America Inc.) additional code and modifications.
+// *
+// * Description: This file contains the implementation for the CPortC32Interface class.
+// * This class contains methods which are invoked by C32 when the
+// * associated client RComm public API is invoked. These methods
+// * are used to create, configure, read, write, and close logical
+// * serial ports. Instances of this class are created by the CSY's
+// * Port Factory.
+//
+
+// PortC32Interface.cpp
+
+/** @file PortC32Interface.cpp
+ *
+ */
+
+#include <cdbcols.h>
+#include "PortC32Interface.h"
+#include "Portfactory.h"
+#include "Mux0710Protocol.h"
+#include "CsyMsgBufBPFrame.h"
+#include "ChannelMgrCmdData.h"
+#include "CommFrameReaderAo.h"
+#include "CsyDebugLogger.h"
+#include "CsyGlobals.h"
+#include "CommFrameWriterAo.h"
+
+CPortC32Interface* CPortC32Interface::NewL(CPortFactory& aPortFactory,
+ CPortFactory::TC32PortInfo& aPortInfo)
+/**
+ * This method uses two phase construction and the cleanup stack to create
+ * an instance of class CPortC32Interface.
+ *
+ * @param aPortFactory - Reference to the port factory
+ * @param aPortInfo - Reference to the port information
+ * @return Pointer to the created instance
+ */
+ {
+ _LOG_L4C1( "CPortC32Interface::NewL");
+
+ CPortC32Interface* self = new(ELeave) CPortC32Interface(aPortFactory, aPortInfo);
+ TCleanupItem closeSelf(CPortFactory::CloseObject, self);
+ CleanupStack::PushL(closeSelf);
+ self->ConstructL();
+ CleanupStack::Pop(self);
+
+ return self;
+ }
+
+CPortC32Interface::~CPortC32Interface()
+/**
+ * Destructor.
+ */
+ {
+ _LOG_L4C1( ">>CPortC32Interface::~CPortC32Interface");
+
+ // let port factory know we are deleted
+ iPortFactory.RemoveC32Port(this);
+ CompleteOutstandingRequest();
+
+ iMuxChannel->Close(this);
+
+ if (iReadBuf)
+ {
+ _LOG_L3C1("Delete read buffer");
+ delete iReadBuf;
+ }
+
+ _LOG_L4C1( "<<CPortC32Interface::~CPortC32Interface");
+ }
+
+CPortC32Interface::CPortC32Interface(CPortFactory& aPortFactory,
+ CPortFactory::TC32PortInfo& aPortInfo)
+/**
+ * Constructor.
+ *
+ * @param aPortFactory - Reference to the port factory
+ * @param aPortInfo - Reference to the port information
+ */
+: CPortC32InterfaceBase(aPortFactory, aPortInfo)
+ {}
+
+void CPortC32Interface::ConstructL(void)
+/**
+ * Safe constructor
+ */
+ {
+ _LOG_L4C1( "CPortC32Interface::ConstructL");
+ CPortC32InterfaceBase::ConstructL();
+ }
+
+/********************************************************************************/
+/* Start of utility methods for CPortC32InterfaceBase */
+/********************************************************************************/
+
+TInt CPortC32Interface::QueryReceiveBuffer(TInt& aLength) const
+/**
+ * Called by C32 when the client queries the size of the receive buffer,
+ * which returns the number of receive characters available to be read by
+ * the C32 client RComm instance.
+ *
+ * @param aLength - Reference to client's buffer length variable
+ * @return KErrNone
+ */
+ {
+ _LOG_L4C2( "CPortC32Interface::QueryReceiveBuffer [port=%d]", GetPortNumber());
+
+ aLength = 0;
+ if (iReadBuf)
+ {
+ aLength = iReadBuf->iMsg.Length();
+ _LOG_L4C2("iReadBuf aLength=%d", aLength);
+ }
+ else if (!iFramesWaitingToBeReadList.IsEmpty())
+ {
+ CCsyMsgBufBpFrame* frame = iFramesWaitingToBeReadList.First();
+ if ((frame)&&(frame->iMsg.Length() >= (KAdvOptionHeaderSize + KChecksumSize)))
+ {
+#ifdef _27010ADVANCEOPTION
+ aLength = frame->iMsg.Length() - (KAdvOptionHeaderSize + KChecksumSize);
+#else
+ aLength = frame->iMsg.Length() - (KBasicOptionHeaderSize + KChecksumSize);
+#endif
+ _LOG_L4C2("iFramesWaitingToBeReadList aLength=%d", aLength);
+ }
+ }
+
+ return KErrNone;
+ }
+
+void CPortC32Interface::ResetBuffers(TUint aFlags)
+/**
+ * Called by C32 when the client requests to reset the buffers,
+ * by removing all receive and/or transmit messages according to
+ * the specified flags.
+ *
+ * @param aFlags Indicate which buffers (receive and/or transmit) should be reset
+ */
+ {
+ _LOG_L4C2(">>CPortC32Interface::ResetBuffers [aFlags=%d]", aFlags);
+ _LOG_L4C2("[port=%d]", GetPortNumber());
+
+ if (aFlags & KCommResetRx)
+ {
+ _LOG_L4C1("Removing all messages intended for the C32 client");
+
+ RemoveWaitingAllFrames();
+ }
+
+ if (aFlags & KCommResetTx)
+ {
+ _LOG_L4C1("Removing all messages intended for the modem");
+
+ GetMuxChannel()->WriteCancel();
+ }
+
+ _LOG_L4C1("<<CPortC32Interface::ResetBuffers");
+ }
+
+void CPortC32Interface::SendFrameToClient(CCsyMsgBufBpFrame* aFrame)
+/**
+ * This method is called by a CSY Channel object when it has a single
+ * frame to send to a C32 client RComm object.
+ *
+ * @param aFrame - Pointer to message to send to client
+ */
+ {
+ _LOG_L4C2( "CPortC32Interface::SendFrameToClient [port=%d]", GetPortNumber());
+
+ if (aFrame)
+ {
+ // check if queue is empty
+ TBool trigger = iFramesWaitingToBeReadList.IsEmpty();
+
+ iFramesWaitingToBeReadList.AddLast(*aFrame);
+ if (trigger)
+ {
+ _LOG_L4C1("No packets already waiting");
+ if (iIsReadInProgress)
+ {
+ _LOG_L4C1("A read is outstanding");
+ ReadFromBufOrQueue();
+ }
+ }
+
+ // inform client new data is available
+ SetDataAvailable();
+ }
+ else
+ {
+ //MAF __ASSERT_DEBUG(EFalse, PANIC(KPanicIllegalState));
+ }
+ }
+
+TBool CPortC32Interface::ReadFromBufOrQueue()
+/**
+ * This method is called to read from buffer or the frame list
+ * It will read as much as possible.
+ *
+ * @return ETrue if complete the read request
+ */
+ {
+ _LOG_L4C2( ">>CPortC32Interface::ReadFromBufOrQueue [port=%d]",GetPortNumber());
+
+ TBool completedTheReadRequest = EFalse;
+
+ TInt err = KErrGeneral;
+ TBool cont;
+ do
+ {
+ cont = EFalse;
+ if(iReadBuf==NULL)
+ {
+ //Read data from the frame list
+ if (!iFramesWaitingToBeReadList.IsEmpty())
+ {
+ _LOG_L4C1("Set to first item");
+ iReadBuf = iFramesWaitingToBeReadList.First();
+ if (iReadBuf)
+ {
+ _LOG_L4C1("iReadBuf not null");
+ // remove msg buf from client list
+ iFramesWaitingToBeReadList.Remove(*iReadBuf);
+
+ // subtract checksum field
+ TInt frameLength = iReadBuf->iMsg.Length();
+ _LOG_L4C2("New read buffer frameLength=%d",frameLength);
+
+ if (frameLength >= KBasicOptionHeaderSize)
+ {
+ iReadBuf->iMsg.SetLength(frameLength - KChecksumSize);
+
+ // remove leading header ints from frame
+#ifdef _27010ADVANCEOPTION
+ iReadBuf->iMsg.Delete(0, KAdvOptionHeaderSize);
+#else
+ iReadBuf->iMsg.Delete(0, KBasicOptionHeaderSize);
+#endif
+ }
+ else
+ {
+ _LOG_L4C1("Incorrect frame size - freeing read buffer");
+ iPortFactory.GetMux0710Protocol()->AddFrameFreeQ(iReadBuf);
+ iReadBuf = NULL;
+ }
+ }
+ }
+ }
+ if (iReadBuf)
+ {
+ TInt length = -1;
+ if (iClientLength - iPos < iReadBuf->iMsg.Length())
+ {
+ length = iClientLength - iPos;
+ _LOG_L4C2("length = %d",length);
+ }
+
+ if (iConfig.iTerminatorCount > 0)
+ {
+ _LOG_L4C2("iTerminatorCount = %d",iConfig.iTerminatorCount);
+
+ // First find terminator
+ TInt terminatorLoc = -1;
+ TInt loc;
+ for (TInt i=0; i< iConfig.iTerminatorCount;i++)
+ {
+ loc = iReadBuf->iMsg.LocateF(iConfig.iTerminator[i]);
+ if (loc > KErrNotFound)
+ {
+ if (terminatorLoc == KErrNotFound)
+ {
+ terminatorLoc = loc;
+ }
+ else
+ {
+ terminatorLoc = Min(loc,terminatorLoc);
+ }
+ }
+ }
+ if (terminatorLoc>KErrNotFound)
+ {
+ if (length > KErrNotFound)
+ length = Min(terminatorLoc + 1,length);
+ else
+ length = terminatorLoc + 1;
+ }
+ _LOG_L4C2("length = %d",length);
+ }
+
+ _LOG_L4C2("Read buf length %d",iReadBuf->iMsg.Length());
+
+ if ((iReadBuf->iMsg.Length() >= length) && (length > -1))
+ {
+ _LOG_L2C2("complete partial read: # %d ", length);
+
+ iPartialReadBuf.Copy(&iReadBuf->iMsg[0], length);
+ iReadBuf->iMsg.Delete(0, length);
+
+ err = IPCWrite(iClientBuffer, iPartialReadBuf, iPos);
+ if (err)
+ {
+ _LOG_L1C2("** IPCWrite Error %d **",err);
+ }
+
+ CompleteReadRequest(err);
+ err = KErrGeneral;
+
+ completedTheReadRequest = ETrue;
+ iPos = 0;
+
+ if (iReadBuf->iMsg.Length()==0)
+ {
+ _LOG_L4C1("All data used - freeing read buffer");
+ iPortFactory.GetMux0710Protocol()->AddFrameFreeQ(iReadBuf);
+ iReadBuf = NULL;
+ }
+ }
+ else
+ {
+ err = IPCWrite(iClientBuffer, iReadBuf->iMsg, iPos);
+ if (err)
+ {
+ _LOG_L1C2("** IPCWrite Error %d **",err);
+ }
+
+ _LOG_L4C3( "Read: iPos = %d, add %d bytes", iPos, iReadBuf->iMsg.Length());
+
+ //try read next frame in the list
+ cont = ETrue;
+ iPos += iReadBuf->iMsg.Length();
+
+ _LOG_L4C1("Freeing read buffer");
+ iPortFactory.GetMux0710Protocol()->AddFrameFreeQ(iReadBuf);
+ iReadBuf = NULL;
+ }
+ }
+ }
+ while (cont);
+
+ if (iPos>0)
+ {
+ if (iOneOrMore)
+ {
+ CompleteReadRequest(err);
+ iPos = 0;
+ completedTheReadRequest = ETrue;
+ }
+ else
+ {
+ //normal read and have not filled the buffer yet
+ _LOG_L4C3( "Not filled buffer yet iPos = %d, iClientLength = %d", iPos, iClientLength);
+ }
+ }
+
+ _LOG_L4C2( "<<CPortC32Interface::ReadFromBufOrQueue [completedTheReadRequest=%d]",completedTheReadRequest);
+ return completedTheReadRequest;
+ }
\ No newline at end of file