baseport/syborg/specific/interrupts.cpp
author William Roberts <williamr@symbian.org>
Tue, 04 Aug 2009 10:28:23 +0100
changeset 2 d55eb581a87c
parent 0 baseport/src/cedar/generic/base/syborg/specific/interrupts.cpp@ffa851df0825
permissions -rw-r--r--
Move syborg baseport from old src/cedar/generic layout to baseport/syborg
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/*
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* Copyright (c) 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 the License "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: Syborg interrupt control and dispatch
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*
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*/
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#include <syborg_priv.h>
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SInterruptHandler SyborgInterrupt::Handlers[KNumSyborgInts];
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void SyborgInterrupt::DisableAndClearAll()
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{
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  WriteReg(KHwBaseSic, 3, 0);
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}
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void SyborgInterrupt::Init1()
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{
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	__KTRACE_OPT(KBOOT,Kern::Printf("SyborgInterrupt::Init1()"));
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	for(TUint i = 0; i < KNumSyborgInts; i++)
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	{
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		Handlers[i].iPtr = (TAny*)i;
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		Handlers[i].iIsr = Spurious;
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	}
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	DisableAndClearAll();
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	Arm::SetIrqHandler((TLinAddr)SyborgInterrupt::IrqDispatch);
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	Arm::SetFiqHandler((TLinAddr)SyborgInterrupt::FiqDispatch);
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}
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void SyborgInterrupt::Init3()
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{
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	__KTRACE_OPT(KHARDWARE,Kern::Printf("SyborgInterrupt::Init3()"));
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}
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void SyborgInterrupt::Spurious(TAny* anId)
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{
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	// Handle an unexpected interrupt
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	Kern::Fault("SpuriousInt", (TInt)anId);
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}
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EXPORT_C TInt Interrupt::Bind(TInt anId, TIsr anIsr, TAny* aPtr)
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{
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  __KTRACE_OPT(KHARDWARE,Kern::Printf("Interrupt::Bind(anId=%d anIsr=0x%X aPtr=0x%X)",anId,anIsr,aPtr));
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	if((anId >= 0) && ((TUint)anId < KNumSyborgInts))
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	{
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		SInterruptHandler& h = SyborgInterrupt::Handlers[anId];
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		TInt irq = NKern::DisableAllInterrupts();
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        TInt r;
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		if(h.iIsr != SyborgInterrupt::Spurious)
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		{
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            r = KErrInUse;
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	    }
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		else
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		{
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    	    h.iPtr = aPtr;
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	    	h.iIsr = anIsr;
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            r = KErrNone;
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		}
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		NKern::RestoreInterrupts(irq);
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		return r;
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	}
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	return KErrArgument;
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}
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EXPORT_C TInt Interrupt::Unbind(TInt anId)
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{
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	__KTRACE_OPT(KHARDWARE,Kern::Printf("Interrupt::Unbind(%d)",anId));
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	if((anId >= 0) && ((TUint)anId < KNumSyborgInts))
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	{
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		SInterruptHandler& h = SyborgInterrupt::Handlers[anId];
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		TInt irq = NKern::DisableAllInterrupts();
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    	TInt r;
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		if(h.iIsr == SyborgInterrupt::Spurious)
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		{
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			r = KErrGeneral;
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		}
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		else
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		{
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            // Reset pointer to handler back to default
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			h.iPtr = (TAny*)anId;
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			h.iIsr = SyborgInterrupt::Spurious;	
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			// Disable the interrupt
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			TSyborg::DisableInt(anId);
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			r = KErrNone;
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        }
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		NKern::RestoreInterrupts(irq);
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    	return r;
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	}
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	return KErrArgument;
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}
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EXPORT_C TInt Interrupt::Enable(TInt anId)
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{
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	__KTRACE_OPT(KHARDWARE,Kern::Printf("Interrupt::Enable(%d)",anId));
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	if((anId >= 0) && ((TUint)anId < KNumSyborgInts))
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	{
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		if(SyborgInterrupt::Handlers[anId].iIsr == SyborgInterrupt::Spurious)
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		{
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	        return KErrNotReady;
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		}
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		else
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		{
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		  TSyborg::EnableInt(anId);
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		  return KErrNone;
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		}
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	}
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	return KErrArgument;
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}
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EXPORT_C TInt Interrupt::Disable(TInt anId)
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{
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	__KTRACE_OPT(KHARDWARE,Kern::Printf("Interrupt::Disable(%d)",anId));
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	if((anId >= 0) && ((TUint)anId < KNumSyborgInts))
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	{
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	  TSyborg::DisableInt(anId);
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	  return KErrNone;
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	}
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	return KErrArgument;
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}
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EXPORT_C TInt Interrupt::Clear(TInt anId)
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{
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	__KTRACE_OPT(KHARDWARE,Kern::Printf("Interrupt::Clear(%d)",anId));
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	if((anId >= 0) && ((TUint)anId < KNumSyborgInts))
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	{
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        return KErrNone;
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	}
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	return KErrArgument;
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}
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EXPORT_C TInt Interrupt::SetPriority(TInt anId, TInt aPriority)
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{
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	__KTRACE_OPT(KHARDWARE,Kern::Printf("Interrupt::SetPriority(anId=%d aPriority=0x%X)",anId,aPriority));
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	return KErrNotSupported;
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}
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