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// Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// wins/specific/serialldd.cpp
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//
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//
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#include "winscomm.h"
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#include <kernel/kern_priv.h>
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#include <e32hal.h>
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#include <e32uid.h>
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_LIT(KLddName,"Comm");
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const TUint KBreaking=0x02;
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const TUint KBreakPending=0x04;
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enum TPanic
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{
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ESetConfigWhileRequestPending,
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ESetSignalsSetAndClear,
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EResetBuffers,
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ESetReceiveBufferLength,
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};
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inline TUint32 SafeSwap(TUint32 aNewValue, TUint32& aWord)
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{ return __e32_atomic_swp_ord32(&aWord, aNewValue); }
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DECLARE_STANDARD_LDD()
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{
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return new DDeviceComm;
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}
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DDeviceComm::DDeviceComm()
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{
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iParseMask = KDeviceAllowAll;
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iUnitsMask = 0xffffffff; // Leave units decision to the PDD
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iVersion = TVersion(KCommsMajorVersionNumber,KCommsMinorVersionNumber,KCommsBuildVersionNumber);
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}
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TInt DDeviceComm::Install()
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{
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return(SetName(&KLddName));
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}
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void DDeviceComm::GetCaps(TDes8& aDes) const
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{
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TPckgBuf<TCapsDevCommV01> b;
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b().version = TVersion(KCommsMajorVersionNumber,KCommsMinorVersionNumber,KCommsBuildVersionNumber);
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Kern::InfoCopy(aDes,b);
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}
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TInt DDeviceComm::Create(DLogicalChannelBase*& aChannel)
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{
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aChannel = new DChannelComm;
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return aChannel?KErrNone:KErrNoMemory;
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}
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DChannelComm::DChannelComm()
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:
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iRxCompleteDfc(DChannelComm::CompleteRxDfc,this,2),
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iTxCompleteDfc(DChannelComm::CompleteTxDfc,this,2),
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iRxDataAvailableDfc(DChannelComm::RxDataAvailableDfc,this,2),
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iSigNotifyDfc(DChannelComm::SignalNotifyDfc,this,2),
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// iBreakMinMilliSeconds(0),
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// iTurnaroundTimerRunning(EFalse),
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// iTurnaroundTransmitDelayed(EFalse),
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iTurnaroundTimer(DChannelComm::TurnaroundStartDfc, this),
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iTurnaroundDfc(DChannelComm::TurnaroundTimeout, this, 2),
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// iTurnaroundTxDesPtr(0),
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// iTurnaroundTxDesLength(0)
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iBreakDfc(DChannelComm::FinishBreakDfc, this, 2)
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{
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iConfig.iRate = EBps9600;
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iConfig.iDataBits = EData8;
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iConfig.iStopBits = EStop1;
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iConfig.iParity = EParityNone;
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iConfig.iHandshake = KConfigObeyCTS;
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iConfig.iParityError = KConfigParityErrorFail;
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iConfig.iFifo = EFifoEnable;
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iConfig.iTerminatorCount = 0;
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iConfig.iXonChar = 0x11;
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iConfig.iXoffChar = 0x13;
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iConfig.iSIREnable = ESIRDisable;
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iTxError = KErrNone;
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iRxError = KErrNone;
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iRxDAError = KErrNone;
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iSignalError = KErrNone;
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iClientDestPtr = 0;
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iClientSignalResultPtr = 0;
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iClient = &Kern::CurrentThread();
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iClient->Open();
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}
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DChannelComm::~DChannelComm()
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{
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Kern::SafeClose((DObject*&)iClient, NULL);
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}
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void DChannelComm::Shutdown()
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{
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// clean-up...
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if (iStatus == EActive)
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Stop(EStopPwrDown); // stop PDD
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Complete(EAll, KErrAbort);
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iRxCompleteDfc.Cancel();
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iTxCompleteDfc.Cancel();
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iTurnaroundTimer.Cancel();
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iTurnaroundDfc.Cancel();
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iSigNotifyDfc.Cancel();
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iRxDataAvailableDfc.Cancel();
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iBreakTimer.Cancel();
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iBreakDfc.Cancel();
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}
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TInt DChannelComm::TurnaroundSet(TUint aNewTurnaroundMilliSeconds)
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{
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TInt r = KErrNone;
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iTurnaroundMinMilliSeconds = aNewTurnaroundMilliSeconds;
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return r;
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}
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TBool DChannelComm::TurnaroundStopTimer()
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// Stop the timer and DFC
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{
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TInt irq = 0;
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irq = NKern::DisableInterrupts(1);
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TBool result = iTurnaroundTimerRunning;
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if(result)
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{
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iTurnaroundTimerRunning = EFalse;
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iTurnaroundTimer.Cancel();
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iTurnaroundDfc.Cancel();
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}
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NKern::RestoreInterrupts(irq);
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return result;
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}
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TInt DChannelComm::TurnaroundClear()
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// Clear any old timer and start timer based on new turnaround value.
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// Called for any change: from T > 0 to T == 0 or (T = t1 > 0) to (T = t2 > 0)
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// POLICY: If a write has already been delayed, it will be started immediately if the requested
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// turnaround time is elapsed else will only start after it is elapsed.
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{
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TInt r = KErrNone;
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TUint delta = 0;
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if(iTurnaroundTimerStartTimeValid == 1)
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{
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//Calculate the turnaround time elapsed so far
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delta = (NKern::TickCount() - iTurnaroundTimerStartTime) * NKern::TickPeriod();
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}
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if(delta < iTurnaroundMicroSeconds)
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{
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iTurnaroundMinMilliSeconds = (iTurnaroundMicroSeconds - delta) / 1000;
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TInt irq = NKern::DisableInterrupts(1);
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// POLICY: if timer is running from a previous read, stop it and re-start it
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if(iTurnaroundTimerRunning)
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{
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iTurnaroundTimer.Cancel();
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iTurnaroundDfc.Cancel();
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}
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iTurnaroundTimerRunning = ETrue;
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TInt timeout = NKern::TimerTicks(iTurnaroundMinMilliSeconds);
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iTurnaroundTimer.OneShot(timeout);
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NKern::RestoreInterrupts(irq);
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}
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else
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{
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if(TurnaroundStopTimer())
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{
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// if a write is waiting, start a DFC to run it
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TurnaroundStartDfcImplementation(EFalse);
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}
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}
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iTurnaroundMinMilliSeconds = 0;
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return r;
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}
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void DChannelComm::TurnaroundStartDfc(TAny* aSelf)
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{
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DChannelComm* self = (DChannelComm*)aSelf;
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self->TurnaroundStartDfcImplementation(ETrue);
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}
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void DChannelComm::TurnaroundStartDfcImplementation(TBool inIsr)
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{
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TInt irq = 0;
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if(!inIsr)
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{
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irq = NKern::DisableInterrupts(1);
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}
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iTurnaroundTimerRunning = EFalse;
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if(iTurnaroundTransmitDelayed || iTurnaroundBreakDelayed)
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{
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if(inIsr)
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iTurnaroundDfc.Add();
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else
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{
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NKern::RestoreInterrupts(irq);
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iTurnaroundDfc.Enque();
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}
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return;
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}
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if(!inIsr)
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{
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NKern::RestoreInterrupts(irq);
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}
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}
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void DChannelComm::TurnaroundTimeout(TAny* aSelf)
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{
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DChannelComm* self = (DChannelComm*)aSelf;
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self->TurnaroundTimeoutImplementation();
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}
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void DChannelComm::TurnaroundTimeoutImplementation(void)
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{
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TInt irq = NKern::DisableInterrupts(1);
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if (iTurnaroundBreakDelayed)
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{
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iTurnaroundBreakDelayed=EFalse;
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if (iStatus==EClosed)
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{
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NKern::RestoreInterrupts(irq);
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Complete(EBreak, KErrNotReady);
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return;
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}
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if (LineFail())
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{
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NKern::RestoreInterrupts(irq);
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Complete(EBreak, KErrCommsLineFail);
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return;
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}
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if (iTurnaroundTransmitDelayed)
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{
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//delay write by break instead of turnaround
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iBreakDelayedTx = ETrue;
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iBreakDelayedTxDesPtr = iTurnaroundTxDesPtr;
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iBreakDelayedTxDesLength = iTurnaroundTxDesLength;
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iTurnaroundTxDesPtr=0;
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iTurnaroundTxDesLength=0;
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iTurnaroundTransmitDelayed=EFalse;
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}
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NKern::RestoreInterrupts(irq);
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BreakOn();
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}
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else if(iTurnaroundTransmitDelayed)
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{
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iTurnaroundTransmitDelayed = EFalse; // protected -> prevent reentrant ISR
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NKern::RestoreInterrupts(irq);
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if (iStatus==EClosed)
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{
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iTurnaroundTxDesPtr = 0;
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iTurnaroundTxDesLength = 0;
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Complete(ETx,KErrNotReady);
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return;
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}
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// fail signals checked in the PDD
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InitiateWrite(iTurnaroundTxDesPtr, iTurnaroundTxDesLength);
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iTurnaroundTimerStartTime = 0;
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iTurnaroundTimerStartTimeValid = 2;
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iTurnaroundTxDesPtr = 0;
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iTurnaroundTxDesLength = 0;
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}
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else
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NKern::RestoreInterrupts(irq);
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}
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TInt DChannelComm::DoCreate(TInt aUnit, const TDesC8* /*aInfo*/, const TVersion &aVer)
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{
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if(!Kern::CurrentThreadHasCapability(ECapabilityCommDD,__PLATSEC_DIAGNOSTIC_STRING("Checked by ECOMM.LDD (Comm Driver)")))
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return KErrPermissionDenied;
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if (!Kern::QueryVersionSupported(TVersion(KCommsMajorVersionNumber,KCommsMinorVersionNumber,KCommsBuildVersionNumber),aVer))
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return KErrNotSupported;
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// set up the correct DFC queue
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SetDfcQ(((DComm*)iPdd)->DfcQ(aUnit));
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iRxCompleteDfc.SetDfcQ(iDfcQ);
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iTxCompleteDfc.SetDfcQ(iDfcQ);
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iRxDataAvailableDfc.SetDfcQ(iDfcQ);
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iSigNotifyDfc.SetDfcQ(iDfcQ);
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iTurnaroundDfc.SetDfcQ(iDfcQ);
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iBreakDfc.SetDfcQ(iDfcQ);
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iMsgQ.Receive();
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((DComm *)iPdd)->iLdd = this;
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//setup the initial port configuration
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PddConfigure(iConfig);
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return KErrNone;
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}
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void DChannelComm::Start()
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{
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if (iStatus != EClosed)
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{
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PddStart();
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iStatus = EActive;
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}
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}
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void DChannelComm::HandleMsg(TMessageBase* aMsg)
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{
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TThreadMessage& m = *(TThreadMessage*)aMsg;
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TInt id = m.iValue;
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if (id == (TInt)ECloseMsg)
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{
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Shutdown();
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iStatus = EClosed;
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m.Complete(KErrNone, EFalse);
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return;
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}
|
sl@0
|
342 |
else if (id == KMaxTInt)
|
sl@0
|
343 |
{
|
sl@0
|
344 |
// DoCancel
|
sl@0
|
345 |
DoCancel(m.Int0());
|
sl@0
|
346 |
m.Complete(KErrNone, ETrue);
|
sl@0
|
347 |
return;
|
sl@0
|
348 |
}
|
sl@0
|
349 |
|
sl@0
|
350 |
if (id < 0)
|
sl@0
|
351 |
{
|
sl@0
|
352 |
// DoRequest
|
sl@0
|
353 |
TRequestStatus* pS = (TRequestStatus*)m.Ptr0();
|
sl@0
|
354 |
TInt r = DoRequest(~id, pS, m.Ptr1(), m.Ptr2());
|
sl@0
|
355 |
if (r != KErrNone)
|
sl@0
|
356 |
Kern::RequestComplete(iClient, pS, r);
|
sl@0
|
357 |
m.Complete(KErrNone, ETrue);
|
sl@0
|
358 |
}
|
sl@0
|
359 |
else
|
sl@0
|
360 |
{
|
sl@0
|
361 |
// DoControl
|
sl@0
|
362 |
TInt r = DoControl(id, m.Ptr0(), m.Ptr1());
|
sl@0
|
363 |
m.Complete(r, ETrue);
|
sl@0
|
364 |
}
|
sl@0
|
365 |
}
|
sl@0
|
366 |
|
sl@0
|
367 |
|
sl@0
|
368 |
TInt DChannelComm::DoRequest(TInt aReqNo, TRequestStatus* aStatus, TAny* a1, TAny* a2)
|
sl@0
|
369 |
{
|
sl@0
|
370 |
|
sl@0
|
371 |
//
|
sl@0
|
372 |
// First check if we have started
|
sl@0
|
373 |
//
|
sl@0
|
374 |
if (iStatus == EOpen)
|
sl@0
|
375 |
{
|
sl@0
|
376 |
Start();
|
sl@0
|
377 |
}
|
sl@0
|
378 |
|
sl@0
|
379 |
// Now we can dispatch the request
|
sl@0
|
380 |
TInt r = KErrNone;
|
sl@0
|
381 |
TInt len = 0;
|
sl@0
|
382 |
switch (aReqNo)
|
sl@0
|
383 |
{
|
sl@0
|
384 |
case RBusDevComm::ERequestRead:
|
sl@0
|
385 |
if (a2)
|
sl@0
|
386 |
//get the size of the client data
|
sl@0
|
387 |
r = Kern::ThreadRawRead(iClient, a2, &len, sizeof(len));
|
sl@0
|
388 |
if (r == KErrNone)
|
sl@0
|
389 |
{
|
sl@0
|
390 |
if (a1) //doing a read
|
sl@0
|
391 |
{
|
sl@0
|
392 |
iRxStatus = aStatus;
|
sl@0
|
393 |
//start the read
|
sl@0
|
394 |
InitiateRead(a1,len);
|
sl@0
|
395 |
}
|
sl@0
|
396 |
else //notify read data availiable
|
sl@0
|
397 |
{
|
sl@0
|
398 |
iRxDAStatus = aStatus;
|
sl@0
|
399 |
NotifyReadDataAvailable();
|
sl@0
|
400 |
}
|
sl@0
|
401 |
}
|
sl@0
|
402 |
break;
|
sl@0
|
403 |
|
sl@0
|
404 |
case RBusDevComm::ERequestWrite:
|
sl@0
|
405 |
{
|
sl@0
|
406 |
if (iStatus == EClosed)
|
sl@0
|
407 |
return KErrNotReady;
|
sl@0
|
408 |
if (!a1)
|
sl@0
|
409 |
a1 = (TAny*)1;
|
sl@0
|
410 |
r = Kern::ThreadRawRead(iClient, a2, &len, sizeof(len)); //get the length of the data to write
|
sl@0
|
411 |
if (r == KErrNone)
|
sl@0
|
412 |
{
|
sl@0
|
413 |
iTxStatus = aStatus;
|
sl@0
|
414 |
TInt irq = NKern::DisableInterrupts(1);
|
sl@0
|
415 |
if(iTurnaroundTimerRunning)
|
sl@0
|
416 |
{
|
sl@0
|
417 |
iTurnaroundTransmitDelayed = ETrue;
|
sl@0
|
418 |
iTurnaroundTxDesPtr = a1;
|
sl@0
|
419 |
iTurnaroundTxDesLength = len;
|
sl@0
|
420 |
NKern::RestoreInterrupts(irq);
|
sl@0
|
421 |
}
|
sl@0
|
422 |
else if (iFlags & KBreaking)
|
sl@0
|
423 |
{
|
sl@0
|
424 |
// currently breaking, delay the write
|
sl@0
|
425 |
iBreakDelayedTx = ETrue;
|
sl@0
|
426 |
iBreakDelayedTxDesPtr = a1; // save these as client could could start trashing them before the
|
sl@0
|
427 |
iBreakDelayedTxDesLength = len; // transmission effectively starts
|
sl@0
|
428 |
NKern::RestoreInterrupts(irq);
|
sl@0
|
429 |
}
|
sl@0
|
430 |
else
|
sl@0
|
431 |
{
|
sl@0
|
432 |
NKern::RestoreInterrupts(irq);
|
sl@0
|
433 |
InitiateWrite(a1, len); //a1 is ptr to data to write (on client side)
|
sl@0
|
434 |
iTurnaroundTimerStartTime = 0;
|
sl@0
|
435 |
iTurnaroundTimerStartTimeValid = 2;
|
sl@0
|
436 |
}
|
sl@0
|
437 |
}
|
sl@0
|
438 |
break;
|
sl@0
|
439 |
}
|
sl@0
|
440 |
|
sl@0
|
441 |
case RBusDevComm::ERequestNotifySignalChange:
|
sl@0
|
442 |
{
|
sl@0
|
443 |
//a1 has place to put the result
|
sl@0
|
444 |
//a2 has the signal mask
|
sl@0
|
445 |
if (!a1)
|
sl@0
|
446 |
{
|
sl@0
|
447 |
r = KErrArgument;
|
sl@0
|
448 |
break;
|
sl@0
|
449 |
}
|
sl@0
|
450 |
|
sl@0
|
451 |
//start the signal request
|
sl@0
|
452 |
TInt mask = 0;
|
sl@0
|
453 |
r = Kern::ThreadRawRead(iClient, a2, &mask, sizeof(mask)); //get the signal mask
|
sl@0
|
454 |
if (r == KErrNone)
|
sl@0
|
455 |
{
|
sl@0
|
456 |
iSignalStatus = aStatus;
|
sl@0
|
457 |
InitiateNotifySignals(a1, mask);
|
sl@0
|
458 |
}
|
sl@0
|
459 |
break;
|
sl@0
|
460 |
}
|
sl@0
|
461 |
|
sl@0
|
462 |
case RBusDevComm::ERequestBreak:
|
sl@0
|
463 |
{
|
sl@0
|
464 |
r = Kern::ThreadRawRead(iClient, a1, &iBreakTimeMicroSeconds, sizeof(TInt)); //get the time to break for
|
sl@0
|
465 |
if (r == KErrNone)
|
sl@0
|
466 |
{
|
sl@0
|
467 |
iBreakStatus=aStatus;
|
sl@0
|
468 |
|
sl@0
|
469 |
// check if turnaround timer running.
|
sl@0
|
470 |
TInt irq = NKern::DisableInterrupts(1);
|
sl@0
|
471 |
if(iTurnaroundTimerRunning)
|
sl@0
|
472 |
{
|
sl@0
|
473 |
iTurnaroundBreakDelayed = ETrue;
|
sl@0
|
474 |
NKern::RestoreInterrupts(irq);
|
sl@0
|
475 |
}
|
sl@0
|
476 |
else
|
sl@0
|
477 |
{
|
sl@0
|
478 |
NKern::RestoreInterrupts(irq);
|
sl@0
|
479 |
BreakOn();
|
sl@0
|
480 |
}
|
sl@0
|
481 |
}
|
sl@0
|
482 |
break;
|
sl@0
|
483 |
}
|
sl@0
|
484 |
|
sl@0
|
485 |
default:
|
sl@0
|
486 |
r = KErrNotSupported;
|
sl@0
|
487 |
break;
|
sl@0
|
488 |
|
sl@0
|
489 |
}
|
sl@0
|
490 |
return r;
|
sl@0
|
491 |
}
|
sl@0
|
492 |
|
sl@0
|
493 |
TInt DChannelComm::SetConfig(TCommConfigV01& c)
|
sl@0
|
494 |
{
|
sl@0
|
495 |
iConfig = c;
|
sl@0
|
496 |
PddConfigure(iConfig);
|
sl@0
|
497 |
return KErrNone;
|
sl@0
|
498 |
}
|
sl@0
|
499 |
|
sl@0
|
500 |
TInt DChannelComm::DoControl(TInt aFunction, TAny* a1, TAny* a2)
|
sl@0
|
501 |
{
|
sl@0
|
502 |
|
sl@0
|
503 |
TCommConfigV01 c;
|
sl@0
|
504 |
TInt r = KErrNone;
|
sl@0
|
505 |
|
sl@0
|
506 |
switch (aFunction)
|
sl@0
|
507 |
{
|
sl@0
|
508 |
case RBusDevComm::EControlConfig:
|
sl@0
|
509 |
{
|
sl@0
|
510 |
//get the current configuration
|
sl@0
|
511 |
TPtrC8 cfg((const TUint8*)&iConfig, sizeof(iConfig));
|
sl@0
|
512 |
r = Kern::ThreadDesWrite(iClient, a1, cfg, 0, KTruncateToMaxLength, iClient);
|
sl@0
|
513 |
break;
|
sl@0
|
514 |
}
|
sl@0
|
515 |
|
sl@0
|
516 |
case RBusDevComm::EControlSetConfig:
|
sl@0
|
517 |
{
|
sl@0
|
518 |
if (AreAnyPending())
|
sl@0
|
519 |
Kern::PanicCurrentThread(_L("D32COMM"), ESetConfigWhileRequestPending);
|
sl@0
|
520 |
else
|
sl@0
|
521 |
{
|
sl@0
|
522 |
memclr(&c, sizeof(c));
|
sl@0
|
523 |
TPtr8 cfg((TUint8*)&c, 0, sizeof(c));
|
sl@0
|
524 |
r = Kern::ThreadDesRead(iClient, a1, cfg, 0, 0);
|
sl@0
|
525 |
if (r == KErrNone)
|
sl@0
|
526 |
r = SetConfig(c); //set the new configuration
|
sl@0
|
527 |
}
|
sl@0
|
528 |
break;
|
sl@0
|
529 |
}
|
sl@0
|
530 |
|
sl@0
|
531 |
case RBusDevComm::EControlCaps:
|
sl@0
|
532 |
{
|
sl@0
|
533 |
//get capabilities
|
sl@0
|
534 |
TCommCaps2 caps;
|
sl@0
|
535 |
PddCaps(caps); //call ipdd->Caps
|
sl@0
|
536 |
r = Kern::ThreadDesWrite(iClient, a1, caps, 0, KTruncateToMaxLength, iClient);
|
sl@0
|
537 |
break;
|
sl@0
|
538 |
}
|
sl@0
|
539 |
|
sl@0
|
540 |
case RBusDevComm::EControlSignals:
|
sl@0
|
541 |
{
|
sl@0
|
542 |
r = Signals();
|
sl@0
|
543 |
break;
|
sl@0
|
544 |
}
|
sl@0
|
545 |
|
sl@0
|
546 |
case RBusDevComm::EControlSetSignals:
|
sl@0
|
547 |
{
|
sl@0
|
548 |
// if (((TUint)a1)&((TUint)a2)) //can't set and clear at same time
|
sl@0
|
549 |
// {
|
sl@0
|
550 |
// Kern::PanicCurrentThread(_L("D32COMM"), ESetSignalsSetAndClear);
|
sl@0
|
551 |
// }
|
sl@0
|
552 |
// else
|
sl@0
|
553 |
{
|
sl@0
|
554 |
|
sl@0
|
555 |
SetSignals((TUint)a1, (TUint)a2);
|
sl@0
|
556 |
}
|
sl@0
|
557 |
break;
|
sl@0
|
558 |
}
|
sl@0
|
559 |
|
sl@0
|
560 |
case RBusDevComm::EControlQueryReceiveBuffer:
|
sl@0
|
561 |
r = RxCount();
|
sl@0
|
562 |
break;
|
sl@0
|
563 |
|
sl@0
|
564 |
case RBusDevComm::EControlResetBuffers:
|
sl@0
|
565 |
if (AreAnyPending())
|
sl@0
|
566 |
Kern::PanicCurrentThread(_L("D32COMM"), EResetBuffers);
|
sl@0
|
567 |
else
|
sl@0
|
568 |
ResetBuffers(ETrue);
|
sl@0
|
569 |
break;
|
sl@0
|
570 |
|
sl@0
|
571 |
case RBusDevComm::EControlReceiveBufferLength:
|
sl@0
|
572 |
r = RxBufferSize();
|
sl@0
|
573 |
break;
|
sl@0
|
574 |
|
sl@0
|
575 |
case RBusDevComm::EControlSetReceiveBufferLength:
|
sl@0
|
576 |
if (AreAnyPending())
|
sl@0
|
577 |
Kern::PanicCurrentThread(_L("D32COMM"), ESetReceiveBufferLength);
|
sl@0
|
578 |
else
|
sl@0
|
579 |
r = SetRxBufferSize((TInt)a1);
|
sl@0
|
580 |
break;
|
sl@0
|
581 |
|
sl@0
|
582 |
case RBusDevComm::EControlMinTurnaroundTime:
|
sl@0
|
583 |
r = iTurnaroundMicroSeconds; // used saved value
|
sl@0
|
584 |
break;
|
sl@0
|
585 |
|
sl@0
|
586 |
case RBusDevComm::EControlSetMinTurnaroundTime:
|
sl@0
|
587 |
{
|
sl@0
|
588 |
if ((TInt)a1<0)
|
sl@0
|
589 |
a1=(TAny*)0;
|
sl@0
|
590 |
iTurnaroundMicroSeconds = (TUint)a1; // save this
|
sl@0
|
591 |
TUint newTurnaroundMilliSeconds = (TUint)a1/1000; // convert to ms
|
sl@0
|
592 |
if(newTurnaroundMilliSeconds != iTurnaroundMinMilliSeconds)
|
sl@0
|
593 |
{
|
sl@0
|
594 |
// POLICY: if a new turnaround time is set before the previous running timer has expired
|
sl@0
|
595 |
// then the timer is adjusted depending on the new value and if any
|
sl@0
|
596 |
// write request has been queued, transmission will proceed after the timer has expired.
|
sl@0
|
597 |
if(iTurnaroundTimerStartTimeValid == 0)
|
sl@0
|
598 |
{
|
sl@0
|
599 |
iTurnaroundTimerStartTime = NKern::TickCount();
|
sl@0
|
600 |
iTurnaroundTimerStartTimeValid = 1;
|
sl@0
|
601 |
}
|
sl@0
|
602 |
if(iTurnaroundTimerStartTimeValid != 2)
|
sl@0
|
603 |
TurnaroundClear();
|
sl@0
|
604 |
if(newTurnaroundMilliSeconds > 0)
|
sl@0
|
605 |
{
|
sl@0
|
606 |
r = TurnaroundSet(newTurnaroundMilliSeconds);
|
sl@0
|
607 |
}
|
sl@0
|
608 |
}
|
sl@0
|
609 |
}
|
sl@0
|
610 |
break;
|
sl@0
|
611 |
|
sl@0
|
612 |
default:
|
sl@0
|
613 |
r = KErrNotSupported;
|
sl@0
|
614 |
}
|
sl@0
|
615 |
return(r);
|
sl@0
|
616 |
}
|
sl@0
|
617 |
|
sl@0
|
618 |
|
sl@0
|
619 |
void DChannelComm::SignalNotifyDfc(TAny* aPtr)
|
sl@0
|
620 |
{
|
sl@0
|
621 |
DChannelComm* pC = (DChannelComm*)aPtr;
|
sl@0
|
622 |
pC->DoSignalNotify();
|
sl@0
|
623 |
}
|
sl@0
|
624 |
|
sl@0
|
625 |
void DChannelComm::RxDataAvailableDfc(TAny* aPtr)
|
sl@0
|
626 |
{
|
sl@0
|
627 |
DChannelComm* pC = (DChannelComm*)aPtr;
|
sl@0
|
628 |
pC->DoRxDataAvailable();
|
sl@0
|
629 |
}
|
sl@0
|
630 |
|
sl@0
|
631 |
void DChannelComm::DoRxDataAvailable()
|
sl@0
|
632 |
{
|
sl@0
|
633 |
Complete(ERxDA, iRxDAError);
|
sl@0
|
634 |
iRxDAError = KErrNone;
|
sl@0
|
635 |
}
|
sl@0
|
636 |
|
sl@0
|
637 |
void DChannelComm::DoSignalNotify()
|
sl@0
|
638 |
{
|
sl@0
|
639 |
//copy the data back to the client
|
sl@0
|
640 |
if (iSignalError == KErrNone)
|
sl@0
|
641 |
iSignalError = Kern::ThreadRawWrite(iClient, iClientSignalResultPtr,&iSignalResult, sizeof(iSignalResult), iClient);
|
sl@0
|
642 |
Complete(ESigChg, iSignalError);
|
sl@0
|
643 |
iSignalError = KErrNone;
|
sl@0
|
644 |
}
|
sl@0
|
645 |
|
sl@0
|
646 |
void DChannelComm::CompleteTxDfc(TAny* aPtr)
|
sl@0
|
647 |
{
|
sl@0
|
648 |
DChannelComm* pC = (DChannelComm*)aPtr;
|
sl@0
|
649 |
pC->DoCompleteTx();
|
sl@0
|
650 |
}
|
sl@0
|
651 |
|
sl@0
|
652 |
void DChannelComm::DoCompleteTx()
|
sl@0
|
653 |
{
|
sl@0
|
654 |
Complete(ETx, iTxError);
|
sl@0
|
655 |
iTxError = KErrNone;
|
sl@0
|
656 |
}
|
sl@0
|
657 |
|
sl@0
|
658 |
void DChannelComm::CompleteRxDfc(TAny* aPtr)
|
sl@0
|
659 |
{
|
sl@0
|
660 |
DChannelComm* pC = (DChannelComm*)aPtr;
|
sl@0
|
661 |
pC->DoCompleteRx();
|
sl@0
|
662 |
}
|
sl@0
|
663 |
|
sl@0
|
664 |
void DChannelComm::DoCompleteRx()
|
sl@0
|
665 |
{
|
sl@0
|
666 |
if (iRxError == KErrNone)
|
sl@0
|
667 |
{
|
sl@0
|
668 |
//copy the data back to the client
|
sl@0
|
669 |
iRxError = Kern::ThreadDesWrite(iClient, (TDes8*)iClientDestPtr, *RxBuffer(), 0, KChunkShiftBy0, iClient);
|
sl@0
|
670 |
}
|
sl@0
|
671 |
Complete(ERx, iRxError);
|
sl@0
|
672 |
iRxError = KErrNone;
|
sl@0
|
673 |
TInt irq = NKern::DisableInterrupts(1);
|
sl@0
|
674 |
if(iTurnaroundMinMilliSeconds > 0)
|
sl@0
|
675 |
{
|
sl@0
|
676 |
// POLICY: if timer is running from a previous read, stop it and re-start it
|
sl@0
|
677 |
if(iTurnaroundTimerRunning)
|
sl@0
|
678 |
{
|
sl@0
|
679 |
iTurnaroundTimer.Cancel();
|
sl@0
|
680 |
iTurnaroundDfc.Cancel();
|
sl@0
|
681 |
}
|
sl@0
|
682 |
iTurnaroundTimerRunning = ETrue;
|
sl@0
|
683 |
TInt timeout = NKern::TimerTicks(iTurnaroundMinMilliSeconds);
|
sl@0
|
684 |
iTurnaroundTimer.OneShot(timeout);
|
sl@0
|
685 |
//Record the timestamp of turnaround timer start.
|
sl@0
|
686 |
iTurnaroundTimerStartTimeValid = 1;
|
sl@0
|
687 |
iTurnaroundTimerStartTime = NKern::TickCount();
|
sl@0
|
688 |
}
|
sl@0
|
689 |
NKern::RestoreInterrupts(irq);
|
sl@0
|
690 |
}
|
sl@0
|
691 |
|
sl@0
|
692 |
void DChannelComm::DoCancel(TInt aMask)
|
sl@0
|
693 |
{
|
sl@0
|
694 |
if (aMask & RBusDevComm::ERequestReadCancel)
|
sl@0
|
695 |
{
|
sl@0
|
696 |
ReadCancel();
|
sl@0
|
697 |
}
|
sl@0
|
698 |
|
sl@0
|
699 |
if (aMask & RBusDevComm::ERequestWriteCancel)
|
sl@0
|
700 |
{
|
sl@0
|
701 |
TInt irq = NKern::DisableInterrupts(1);
|
sl@0
|
702 |
if(iTurnaroundTransmitDelayed)
|
sl@0
|
703 |
{
|
sl@0
|
704 |
iTurnaroundTxDesPtr = 0;
|
sl@0
|
705 |
iTurnaroundTxDesLength = 0;
|
sl@0
|
706 |
iTurnaroundTransmitDelayed = EFalse;
|
sl@0
|
707 |
}
|
sl@0
|
708 |
NKern::RestoreInterrupts(irq);
|
sl@0
|
709 |
|
sl@0
|
710 |
WriteCancel();
|
sl@0
|
711 |
}
|
sl@0
|
712 |
|
sl@0
|
713 |
if (aMask & RBusDevComm::ERequestNotifySignalChangeCancel)
|
sl@0
|
714 |
{
|
sl@0
|
715 |
SignalChangeCancel();
|
sl@0
|
716 |
Complete(ESigChg,KErrCancel);
|
sl@0
|
717 |
}
|
sl@0
|
718 |
|
sl@0
|
719 |
if (aMask & RBusDevComm::ERequestBreakCancel)
|
sl@0
|
720 |
{
|
sl@0
|
721 |
TInt irq = NKern::DisableInterrupts(1);
|
sl@0
|
722 |
if(iTurnaroundBreakDelayed)
|
sl@0
|
723 |
iTurnaroundBreakDelayed = EFalse;
|
sl@0
|
724 |
NKern::RestoreInterrupts(irq);
|
sl@0
|
725 |
|
sl@0
|
726 |
iBreakDfc.Cancel();
|
sl@0
|
727 |
iBreakTimer.Cancel();
|
sl@0
|
728 |
FinishBreakImplementation(KErrCancel);
|
sl@0
|
729 |
}
|
sl@0
|
730 |
}
|
sl@0
|
731 |
|
sl@0
|
732 |
|
sl@0
|
733 |
void DChannelComm::InitiateWrite(TAny *aTxDes, TInt aLength)
|
sl@0
|
734 |
{
|
sl@0
|
735 |
//aTxDes has client side data
|
sl@0
|
736 |
//aLength has the len
|
sl@0
|
737 |
|
sl@0
|
738 |
if (!aTxDes)
|
sl@0
|
739 |
{
|
sl@0
|
740 |
Complete(ETx, KErrArgument);
|
sl@0
|
741 |
return;
|
sl@0
|
742 |
}
|
sl@0
|
743 |
// call the pdd to fill its buffer and write the data
|
sl@0
|
744 |
Write(iClient, aTxDes, aLength);
|
sl@0
|
745 |
}
|
sl@0
|
746 |
|
sl@0
|
747 |
void DChannelComm::InitiateRead(TAny *aRxDes, TInt aLength)
|
sl@0
|
748 |
{
|
sl@0
|
749 |
|
sl@0
|
750 |
// Complete zero-length read immediately. maybe not
|
sl@0
|
751 |
|
sl@0
|
752 |
// if (aLength == 0)
|
sl@0
|
753 |
// {
|
sl@0
|
754 |
// Complete(ERx, KErrNone);
|
sl@0
|
755 |
// return;
|
sl@0
|
756 |
// }
|
sl@0
|
757 |
TInt max=Kern::ThreadGetDesMaxLength(iClient,aRxDes);
|
sl@0
|
758 |
|
sl@0
|
759 |
if (max < Abs(aLength) || max < 0)
|
sl@0
|
760 |
Complete(ERx, KErrGeneral);
|
sl@0
|
761 |
// do not start the Turnaround timer (invalid Descriptor this read never starts)
|
sl@0
|
762 |
else
|
sl@0
|
763 |
{
|
sl@0
|
764 |
iClientDestPtr = aRxDes;
|
sl@0
|
765 |
Read(iClient, aRxDes, aLength);
|
sl@0
|
766 |
}
|
sl@0
|
767 |
}
|
sl@0
|
768 |
|
sl@0
|
769 |
void DChannelComm::InitiateNotifySignals(TAny *aSignalResultPtr, TInt aMask)
|
sl@0
|
770 |
{
|
sl@0
|
771 |
//aMask has the mask of signals we require
|
sl@0
|
772 |
//aSignalResultPtr is a pointer to the clients area for the result
|
sl@0
|
773 |
iClientSignalResultPtr = (TUint*)aSignalResultPtr;
|
sl@0
|
774 |
NotifySignals(iClient, aMask);
|
sl@0
|
775 |
}
|
sl@0
|
776 |
|
sl@0
|
777 |
void DChannelComm::NotifyReadDataAvailable()
|
sl@0
|
778 |
{
|
sl@0
|
779 |
NotifyDataAvailable();
|
sl@0
|
780 |
}
|
sl@0
|
781 |
|
sl@0
|
782 |
|
sl@0
|
783 |
void DChannelComm::Complete(TInt aMask, TInt aReason)
|
sl@0
|
784 |
{
|
sl@0
|
785 |
if (aMask & ERx)
|
sl@0
|
786 |
Kern::RequestComplete(iClient, iRxStatus, aReason);
|
sl@0
|
787 |
if (aMask & ETx)
|
sl@0
|
788 |
Kern::RequestComplete(iClient, iTxStatus, aReason);
|
sl@0
|
789 |
if (aMask & ESigChg)
|
sl@0
|
790 |
Kern::RequestComplete(iClient, iSignalStatus, aReason);
|
sl@0
|
791 |
if (aMask & ERxDA)
|
sl@0
|
792 |
Kern::RequestComplete(iClient, iRxDAStatus, aReason);
|
sl@0
|
793 |
if (aMask & EBreak)
|
sl@0
|
794 |
Kern::RequestComplete(iClient, iBreakStatus, aReason);
|
sl@0
|
795 |
}
|
sl@0
|
796 |
|
sl@0
|
797 |
void DChannelComm::BreakOn()
|
sl@0
|
798 |
//
|
sl@0
|
799 |
// Start the driver breaking.
|
sl@0
|
800 |
//
|
sl@0
|
801 |
{
|
sl@0
|
802 |
iFlags&=(~KBreakPending);
|
sl@0
|
803 |
iFlags|=KBreaking;
|
sl@0
|
804 |
PddBreak(ETrue);
|
sl@0
|
805 |
iBreakTimer.OneShot(iBreakTimeMicroSeconds, DChannelComm::FinishBreak, this);
|
sl@0
|
806 |
}
|
sl@0
|
807 |
|
sl@0
|
808 |
void DChannelComm::BreakOff()
|
sl@0
|
809 |
//
|
sl@0
|
810 |
// Stop the driver breaking.
|
sl@0
|
811 |
//
|
sl@0
|
812 |
{
|
sl@0
|
813 |
PddBreak(EFalse);
|
sl@0
|
814 |
iFlags&=~KBreaking;
|
sl@0
|
815 |
}
|
sl@0
|
816 |
|
sl@0
|
817 |
void DChannelComm::FinishBreak(TAny* aSelf)
|
sl@0
|
818 |
{
|
sl@0
|
819 |
DChannelComm* self = (DChannelComm*)aSelf;
|
sl@0
|
820 |
self->QueueFinishBreakDfc();
|
sl@0
|
821 |
}
|
sl@0
|
822 |
|
sl@0
|
823 |
void DChannelComm::FinishBreakDfc(TAny* aSelf)
|
sl@0
|
824 |
{
|
sl@0
|
825 |
DChannelComm* self = (DChannelComm*)aSelf;
|
sl@0
|
826 |
self->FinishBreakImplementation(KErrNone);
|
sl@0
|
827 |
}
|
sl@0
|
828 |
|
sl@0
|
829 |
void DChannelComm::QueueFinishBreakDfc()
|
sl@0
|
830 |
{
|
sl@0
|
831 |
iBreakDfc.Enque();
|
sl@0
|
832 |
}
|
sl@0
|
833 |
|
sl@0
|
834 |
void DChannelComm::FinishBreakImplementation(TInt aBreakError)
|
sl@0
|
835 |
{
|
sl@0
|
836 |
if (iStatus==EClosed)
|
sl@0
|
837 |
{
|
sl@0
|
838 |
Complete(EBreak, KErrNotReady);
|
sl@0
|
839 |
}
|
sl@0
|
840 |
else if(LineFail()) // have signals changed in the meantime?
|
sl@0
|
841 |
{
|
sl@0
|
842 |
Complete(EBreak, KErrCommsLineFail);
|
sl@0
|
843 |
}
|
sl@0
|
844 |
else
|
sl@0
|
845 |
{
|
sl@0
|
846 |
BreakOff();
|
sl@0
|
847 |
Complete(EBreak, aBreakError);
|
sl@0
|
848 |
|
sl@0
|
849 |
TInt irq = NKern::DisableInterrupts(1);
|
sl@0
|
850 |
if(iBreakDelayedTx)
|
sl@0
|
851 |
{
|
sl@0
|
852 |
iBreakDelayedTx = EFalse; // protected -> prevent reentrant ISR
|
sl@0
|
853 |
NKern::RestoreInterrupts(irq);
|
sl@0
|
854 |
if (iStatus==EClosed)
|
sl@0
|
855 |
{
|
sl@0
|
856 |
iBreakDelayedTxDesPtr = 0;
|
sl@0
|
857 |
iBreakDelayedTxDesLength = 0;
|
sl@0
|
858 |
Complete(ETx,KErrNotReady);
|
sl@0
|
859 |
return;
|
sl@0
|
860 |
}
|
sl@0
|
861 |
|
sl@0
|
862 |
// fail signals checked in the PDD
|
sl@0
|
863 |
InitiateWrite(iBreakDelayedTxDesPtr, iBreakDelayedTxDesLength);
|
sl@0
|
864 |
iBreakDelayedTxDesPtr = 0;
|
sl@0
|
865 |
iBreakDelayedTxDesLength = 0;
|
sl@0
|
866 |
}
|
sl@0
|
867 |
else
|
sl@0
|
868 |
NKern::RestoreInterrupts(irq);
|
sl@0
|
869 |
|
sl@0
|
870 |
}
|
sl@0
|
871 |
}
|