1 // Copyright (c) 2002-2010 Nokia Corporation and/or its subsidiary(-ies). |
1 // Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies). |
2 // All rights reserved. |
2 // All rights reserved. |
3 // This component and the accompanying materials are made available |
3 // This component and the accompanying materials are made available |
4 // under the terms of the License "Eclipse Public License v1.0" |
4 // under the terms of the License "Eclipse Public License v1.0" |
5 // which accompanies this distribution, and is available |
5 // which accompanies this distribution, and is available |
6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
353 */ |
353 */ |
354 { |
354 { |
355 public: |
355 public: |
356 static void StartEmulation(); |
356 static void StartEmulation(); |
357 static void StopEmulation(); |
357 static void StopEmulation(); |
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358 static TBool InISR(); |
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359 static void Synchronize(); |
358 private: |
360 private: |
359 enum { KPeriod = 1 }; // in ms |
361 enum { KPeriod = 1 }; // in ms |
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362 enum { EDmaSimIdle=0u, EDmaSimStarted=1u, EDmaSimInISR=2u, EDmaSimStopping=0x80000000u }; |
360 static void TickCB(TAny* aThis); |
363 static void TickCB(TAny* aThis); |
361 static NTimer Timer; |
364 static NTimer Timer; |
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365 static volatile TInt StartStop; |
362 }; |
366 }; |
363 |
367 |
364 NTimer DmacSim::Timer; |
368 NTimer DmacSim::Timer; |
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369 volatile TInt DmacSim::StartStop; |
365 |
370 |
366 void DmacSim::StartEmulation() |
371 void DmacSim::StartEmulation() |
367 { |
372 { |
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373 __DMA_ASSERTA(StartStop==EDmaSimIdle); |
368 new (&Timer) NTimer(&TickCB, 0); |
374 new (&Timer) NTimer(&TickCB, 0); |
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375 __e32_atomic_store_ord32(&StartStop, EDmaSimStarted); |
369 __DMA_ASSERTA(Timer.OneShot(KPeriod, EFalse) == KErrNone); |
376 __DMA_ASSERTA(Timer.OneShot(KPeriod, EFalse) == KErrNone); |
370 } |
377 } |
371 |
378 |
372 void DmacSim::StopEmulation() |
379 void DmacSim::StopEmulation() |
373 { |
380 { |
374 // Ensure that timer really is cancelled. |
381 TInt orig = __e32_atomic_tas_ord32(&StartStop, (TInt)EDmaSimStarted, (TInt)EDmaSimStopping, 0); |
375 TBool cancelled = EFalse; |
382 if (orig == EDmaSimIdle) |
376 do |
383 return; // wasn't running |
377 { |
384 // loop until we succeed in cancelling the timer or the timer callback |
378 cancelled = Timer.Cancel(); |
385 // notices that we are shutting down |
379 } |
386 while (!Timer.Cancel() && __e32_atomic_load_acq32(&StartStop)!=EDmaSimIdle) |
380 while(!cancelled); |
387 {} |
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388 __e32_atomic_store_ord32(&StartStop, EDmaSimIdle); |
381 } |
389 } |
382 |
390 |
383 void DmacSim::TickCB(TAny*) |
391 void DmacSim::TickCB(TAny*) |
384 { |
392 { |
385 DmacSb::DoTransfer(); |
393 TInt orig = (TInt)__e32_atomic_ior_acq32(&StartStop, EDmaSimInISR); |
386 DmacDb::DoTransfer(); |
394 if (orig >= 0) |
387 DmacSg::DoTransfer(); |
395 { |
388 __DMA_ASSERTA(Timer.Again(KPeriod) == KErrNone); |
396 DmacSb::DoTransfer(); |
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397 DmacDb::DoTransfer(); |
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398 DmacSg::DoTransfer(); |
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399 } |
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400 orig = (TInt)__e32_atomic_and_rel32(&StartStop, (TUint32)~EDmaSimInISR); |
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401 if (orig < 0) |
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402 { |
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403 __e32_atomic_store_rel32(&StartStop, EDmaSimIdle); |
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404 return; |
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405 } |
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406 TInt r = Timer.Again(KPeriod); |
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407 if (r == KErrArgument) |
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408 r = Timer.OneShot(KPeriod); |
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409 __DMA_ASSERTA(r == KErrNone); |
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410 } |
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411 |
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412 TBool DmacSim::InISR() |
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413 { |
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414 return __e32_atomic_load_acq32(&StartStop) & EDmaSimInISR; |
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415 } |
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416 |
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417 void DmacSim::Synchronize() |
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418 { |
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419 while (InISR()) |
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420 {} |
389 } |
421 } |
390 |
422 |
391 ////////////////////////////////////////////////////////////////////////////// |
423 ////////////////////////////////////////////////////////////////////////////// |
392 // PSL FOR DMA SIMULATION |
424 // PSL FOR DMA SIMULATION |
393 ////////////////////////////////////////////////////////////////////////////// |
425 ////////////////////////////////////////////////////////////////////////////// |
670 |
704 |
671 |
705 |
672 void DSimSgController::StopTransfer(const TDmaChannel& aChannel) |
706 void DSimSgController::StopTransfer(const TDmaChannel& aChannel) |
673 { |
707 { |
674 __e32_atomic_and_ord32(&DmacSg::ChannelControl[aChannel.PslId()], (TUint32)~DmacSg::EChannelBitRun); |
708 __e32_atomic_and_ord32(&DmacSg::ChannelControl[aChannel.PslId()], (TUint32)~DmacSg::EChannelBitRun); |
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709 DmacSim::Synchronize(); |
675 } |
710 } |
676 |
711 |
677 |
712 |
678 void DSimSgController::InitHwDes(const SDmaDesHdr& aHdr, TUint32 aSrc, TUint32 aDest, TInt aCount, |
713 void DSimSgController::InitHwDes(const SDmaDesHdr& aHdr, TUint32 aSrc, TUint32 aDest, TInt aCount, |
679 TUint /*aFlags*/, TUint32 /*aPslInfo*/, TUint32 /*aCookie*/) |
714 TUint /*aFlags*/, TUint32 /*aPslInfo*/, TUint32 /*aCookie*/) |