1 // Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of the License "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 // e32\include\drivers\dma.inl

    15 // DMA framework public inline functions

    16 // This file should not be modified when porting the DMA framework to

    17 // new hardware.

    18 // TDmaChannel

    19 // 

    20 // WARNING: This file contains some APIs which are internal and are subject

    21 //          to change without noticed. Such APIs should therefore not be used

    22 //          outside the Kernel and Hardware Services package.

    23 //

    24 

    25 inline void TDmaChannel::Wait()

    26 	{

    27 	NKern::FMWait(&iLock);

    28 	}

    29 

    30 inline void TDmaChannel::Signal()

    31 	{

    32 	NKern::FMSignal(&iLock);

    33 	}

    34 

    35 inline TBool TDmaChannel::Flash()

    36 	{

    37 	return NKern::FMFlash(&iLock);

    38 	}

    39 

    40 inline TBool TDmaChannel::IsOpened() const

    41 	{

    42 	return iController != NULL;

    43 	}

    44 

    45 inline TBool TDmaChannel::IsQueueEmpty() const

    46 	{

    47 	return const_cast<TDmaChannel*>(this)->iReqQ.IsEmpty();

    48 	}

    49 

    50 inline TUint32 TDmaChannel::PslId() const

    51 	{

    52 	return iPslId;

    53 	}

    54 

    55 inline TInt TDmaChannel::FailNext(TInt /*aFragmentCount*/)

    56 	{

    57 	return iController->FailNext(*this);

    58 	}

    59 

    60 inline TInt TDmaChannel::MissNextInterrupts(TInt aInterruptCount)

    61 	{

    62 	return iController->MissNextInterrupts(*this, aInterruptCount);

    63 	}

    64 

    65 /** Function allowing platform-specific layer to extend API with new

    66 	channel-specific operations.

    67  	@param aCmd Command identifier.  Negative values are reserved for Symbian use.

    68 	@param aArg PSL-specific

    69 	@return KErrNotSupported if aCmd is not supported.  PSL-specific value otherwise.

    70  */

    71 

    72 inline TInt TDmaChannel::Extension(TInt aCmd, TAny* aArg)

    73 	{

    74 	return iController->Extension(*this, aCmd, aArg);

    75 	}

    76 

    77 inline const TDmac* TDmaChannel::Controller() const

    78 	{

    79 	return iController;

    80 	}

    81 

    82 inline TInt TDmaChannel::MaxTransferSize(TUint aFlags, TUint32 aPslInfo)

    83 	{

    84 	return iController->MaxTransferSize(*this, aFlags, aPslInfo);

    85 	}

    86 

    87 inline TUint TDmaChannel::MemAlignMask(TUint aFlags, TUint32 aPslInfo)

    88 	{

    89 	return iController->MemAlignMask(*this, aFlags, aPslInfo);

    90 	}

    91 

    92 // DDmaRequest

    93 

    94 /** Called when request is removed from request queue in channel */

    95 

    96 inline void DDmaRequest::OnDeque()

    97 	{

    98 	iQueued = EFalse;

    99 	iLastHdr->iNext = NULL;

   100 	iChannel.DoUnlink(*iLastHdr);

   101 	}

   102 

   103 // TDmac

   104 

   105 inline void TDmac::Wait()

   106 	{

   107 	NKern::FMWait(&iLock);

   108 	}

   109 

   110 inline void TDmac::Signal()

   111 	{

   112 	NKern::FMSignal(&iLock);

   113 	}

   114 

   115 inline SDmaPseudoDes& TDmac::HdrToDes(const SDmaDesHdr& aHdr) const

   116 	{

   117 	return static_cast<SDmaPseudoDes*>(iDesPool)[&aHdr - iHdrPool];

   118 	}

   119 

   120 inline TAny* TDmac::HdrToHwDes(const SDmaDesHdr& aHdr) const

   121 	{

   122 	return static_cast<TUint8*>(iDesPool) + iDesSize*(&aHdr - iHdrPool);

   123 	}

   124 

   125 inline TUint32 TDmac::DesLinToPhys(TAny* aDes) const

   126 	{

   127 #ifdef __WINS__

   128 	(void)aDes;

   129 	return 0xDEADBEEF;

   130 #else

   131 	return iHwDesChunk->iPhysAddr + ((TLinAddr)aDes - iHwDesChunk->iLinAddr);

   132 #endif

   133 	}

   134 

   135 // DmaChannelMgr

   136 

   137 inline void DmaChannelMgr::Wait()

   138 	{

   139 	NKern::FMWait(&Lock);

   140 	}

   141 

   142 inline void DmaChannelMgr::Signal()

   143 	{

   144 	NKern::FMSignal(&Lock);

   145 	}

   146 

   147 //---