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// Copyright (c) 1998-2009 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:
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// e32\drivers\display\display.cpp
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// LDD for a Display driver with GCE support
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// LDD for a Display driver with GCE support
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//
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//
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/**
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@file
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@internalTechnology
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@prototype
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*/
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#include <drivers/display.h>
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#include <kernel/kern_priv.h>
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static const char KDisplayLddPanic[]="DISPLAY/GCE LDD";
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/************************************************************************************
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* DDisplayLdd LDD class implementation
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************************************************************************************/
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DDisplayLdd::DDisplayLdd()
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{
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__DEBUG_PRINT("DDisplayLdd::DDisplayLdd()\n");
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// store the pointer to the current thread for request completion
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iClient = &Kern::CurrentThread();
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__NK_ASSERT_DEBUG(iClient);
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// Open a reference on the client thread so it's control block can't disappear until the driver has finished with it.
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iClient->Open();
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iCurrentPostCount = 0;
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iRequestedPostCount = 0;
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iCompositionBuffIdx = 0;
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iUnit = -1;
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iThreadOpenCount = 0;
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}
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DDisplayLdd::~DDisplayLdd()
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{
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__DEBUG_PRINT("DDisplayLdd::~DDisplayLdd() \n");
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// cancel outstanding requests
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for(TInt k = 0; k < KPendingReqArraySize ; k++)
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{
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if(iPendingReq[k].iStatus)
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{
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CompleteRequest(iPendingReq[k].iOwningThread,iPendingReq[k].iStatus,KErrCancel);
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}
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}
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//Close User Buffer chunks not yet destroyed.
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for(TInt i = 0; i < KDisplayUBMax; i++)
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{
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if(iUserBuffer[i].iChunk != 0)
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{
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Kern::ChunkClose(iUserBuffer[i].iChunk);
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iUserBuffer[i].iChunk= NULL;
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}
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}
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Kern::SafeClose((DObject*&)iClient, NULL);
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__ASSERT_DEBUG(iThreadOpenCount==0,Kern::Fault(KDisplayLddPanic,__LINE__));
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// Clear the 'units open mask' in the LDD factory.
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if (iUnit>=0)
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((DDisplayLddFactory*)iDevice)->SetUnitOpen(iUnit,EFalse);
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}
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/**
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LDD second stage constructor
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*/
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TInt DDisplayLdd::DoCreate(TInt aUnit, const TDesC8* /* anInfo*/, const TVersion& aVer)
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{
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__DEBUG_PRINT("DDisplayLdd::DoCreate()\n");
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if( !Kern::CurrentThreadHasCapability(ECapabilityPowerMgmt, __PLATSEC_DIAGNOSTIC_STRING("Checked by DISPLAY.LDD (GCE Driver)") )
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&& !Kern::CurrentThreadHasCapability(ECapabilityReadDeviceData, __PLATSEC_DIAGNOSTIC_STRING("Checked by DISPLAY.LDD (GCE Driver)") )
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&& !Kern::CurrentThreadHasCapability(ECapabilityWriteDeviceData,__PLATSEC_DIAGNOSTIC_STRING("Checked by DISPLAY.LDD (GCE Driver)") )
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&& !Kern::CurrentThreadHasCapability(ECapabilityProtServ, __PLATSEC_DIAGNOSTIC_STRING("Checked by DISPLAY.LDD (GCE Driver)") ) )
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{
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return KErrPermissionDenied;
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}
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// Check that the display driver version specified by the client is compatible.
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if (!Kern::QueryVersionSupported(RDisplayChannel::VersionRequired(),aVer))
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{
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return(KErrNotSupported);
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}
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// Check that a channel hasn't already been opened on this unit.
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TInt r=((DDisplayLddFactory*)iDevice)->SetUnitOpen(aUnit,ETrue); // Try to update 'units open mask' in the LDD factory.
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if (r!=KErrNone)
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{
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return r;
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}
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Pdd()->iLdd = this;
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r = Pdd()->CreateChannelSetup(aUnit);
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if ( r!= KErrNone)
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{
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return r;
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}
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// set up user buffer nodes
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for (TInt node = 0; node < KDisplayUBMax; node++)
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{
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iUserBuffer[node].iType = EBufferTypeUser;
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iUserBuffer[node].iBufferId = (node + 1);
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iUserBuffer[node].iFree = ETrue;
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iUserBuffer[node].iState = EBufferFree;
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iUserBuffer[node].iAddress = 0;
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iUserBuffer[node].iSize = 0;
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iUserBuffer[node].iHandle = 0;
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iUserBuffer[node].iChunk = 0;
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iUserBuffer[node].iOffset = 0;
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iUserBuffer[node].iPendingRequest = 0;
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}
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//Initialise pending queue for asynchronous requests
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for(int k = 0; k < KPendingReqArraySize; k++)
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{
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iPendingReq[k].iStatus = 0;
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iPendingReq[k].iOwningThread = 0;
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}
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Pdd()->SetGceMode();
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SetDfcQ(Pdd()->DfcQ(aUnit));
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iMsgQ.Receive();
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return KErrNone;
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}
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/**
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* All driver's client requests (synchronous and asynchronous) are sent as
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* kernel messages by generic kernel to logical channel. This function
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* catches messages sent by the generic kernel
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*
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* @param aMsg KErnel side thread messaging
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*/
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void DDisplayLdd::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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DThread* client = m.Client();
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// close message
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if (id == (TInt)ECloseMsg)
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{
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//Device specific cleanup operations
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Pdd()->CloseMsg();
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// cancel outstanding requests
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for(int k = 0; k < KPendingReqArraySize; k++)
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{
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if(iPendingReq[k].iStatus)
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{
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CompleteRequest(iPendingReq[k].iOwningThread,iPendingReq[k].iStatus,KErrCancel);
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}
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}
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Pdd()->SetLegacyMode();
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m.Complete(KErrNone, EFalse);
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return;
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}
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// cancel
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if (id == KMaxTInt)
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{
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// DoCancel
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TInt req = m.Int0() >> 1;
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DoCancel(req);
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m.Complete(KErrNone,ETrue);
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return;
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}
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// asynchronous request
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else if (id < 0)
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{
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TRequestStatus* pS=(TRequestStatus*)m.Ptr0();
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TInt r = DoRequest(~id,pS,m.Ptr1(),m.Ptr2(), client);
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m.Complete(r, ETrue);
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}
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// synchronous request
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else
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{
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TInt r = DoControl(id,m.Ptr0(),m.Ptr1(), client);
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m.Complete(r,ETrue);
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}
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}
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/**
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Cancel outstanding request.
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@param aReqNumber Any value from the RDisplayChannel::TRequest enumeration.
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*/
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void DDisplayLdd::DoCancel(TUint aReqNumber)
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{
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__DEBUG_PRINT2("DDisplayLdd::DoCancel %d\n",aReqNumber);
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switch (aReqNumber)
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{
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case RDisplayChannel::ECtrlCancelGetCompositionBuffer:
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case RDisplayChannel::ECtrlCancelPostUserBuffer:
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case RDisplayChannel::ECtrlCancelWaitForPost:
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if(iPendingReq[aReqNumber].iStatus)
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{
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CompleteRequest(iPendingReq[aReqNumber].iOwningThread,iPendingReq[aReqNumber].iStatus,KErrCancel);
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iPendingReq[aReqNumber].iStatus = 0;
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iPendingReq[aReqNumber].iOwningThread = 0;
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}
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break;
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}
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}
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/**
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Asynchronous request processing.
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@param aFunction request function number
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@param apRqStat pointer to the user's request status object.
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@param apArg1 pointer to the 1st parameter
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@param apArg2 pointer to the 2nd parameter
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@return request scheduling result, system-wide error code.
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*/
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TInt DDisplayLdd::DoRequest(TInt aReqNumber, TRequestStatus* aRqStat, TAny* aArg1, TAny* aArg2, DThread* aClient)
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{
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TUint count;
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TInt pack[2];
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TInt r = KErrNone;
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TBufferNode* node = 0;
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TInt buffer_id = 0;
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// Open a reference on the client thread while the request is pending so it's control block can't disappear until this driver has finished with it.
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r=aClient->Open();
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__ASSERT_ALWAYS(r==KErrNone,Kern::Fault(KDisplayLddPanic,__LINE__));
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#ifdef _DEBUG
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__e32_atomic_add_ord32(&iThreadOpenCount, 1);
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#endif
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// check if this request is valid
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if(aReqNumber >= 0 && aReqNumber <= RDisplayChannel::EReqWaitForPost)
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{
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// cancel outstanding request
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if(iPendingReq[aReqNumber].iStatus)
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{
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CompleteRequest(iPendingReq[aReqNumber].iOwningThread,iPendingReq[aReqNumber].iStatus,KErrCancel);
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iPendingReq[aReqNumber].iStatus = 0;
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iPendingReq[aReqNumber].iOwningThread = 0;
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}
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// store request and client
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iPendingReq[aReqNumber].iStatus = aRqStat;
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iPendingReq[aReqNumber].iOwningThread = aClient;
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}
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switch (aReqNumber)
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{
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case RDisplayChannel::EReqGetCompositionBuffer:
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if(aArg1 == 0 )
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{
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r = KErrGeneral;
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CompleteRequest(iPendingReq[aReqNumber].iOwningThread,iPendingReq[aReqNumber].iStatus,r);
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iPendingReq[aReqNumber].iStatus = 0;
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iPendingReq[aReqNumber].iOwningThread = 0;
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}
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else
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{
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TInt index;
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TBool found = EFalse;
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for(index =0; index< KDisplayCBMax; index++)
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{
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if(iCompositionBuffer[index].iState == EBufferFree || iCompositionBuffer[index].iState == EBufferCompose )
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{
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__DEBUG_PRINT2("EReqGetCompositionBuffer: Getting iCompositionBuffer[%d] \n", index);
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iCompositionBuffIdx = index;
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r = Kern::ThreadRawWrite(aClient, aArg1, &iCompositionBuffIdx, sizeof(TInt), aClient);
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if ( r == KErrNone)
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{
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iCompositionBuffer[iCompositionBuffIdx].iState = EBufferCompose;
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CompleteRequest(iPendingReq[aReqNumber].iOwningThread,iPendingReq[aReqNumber].iStatus,r);
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iPendingReq[aReqNumber].iStatus = 0;
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iPendingReq[aReqNumber].iOwningThread = 0;
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found = ETrue;
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break;
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}
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}
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}
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if(!found) //There are no free buffers schedule request for completion
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{
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//Case of a single composition buffer.
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if (iDisplayInfo.iNumCompositionBuffers == 1)
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{
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iCompositionBuffIdx = 0;
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r = Kern::ThreadRawWrite(aClient, aArg1, &iCompositionBuffIdx, sizeof(TInt), aClient);
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__DEBUG_PRINT("EReqGetCompositionBuffer The single Composition buffer is currently being used\n");
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break;
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}
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for( index=0; index< KDisplayCBMax; index++)
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{
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if(iCompositionBuffer[index].iState == EBufferActive)
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{
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iCompositionBuffIdx = index;
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r = Kern::ThreadRawWrite(aClient, aArg1,&iCompositionBuffIdx, sizeof(TInt), aClient);
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__DEBUG_PRINT2("EReqGetCompositionBuffer No composition buffer available. Next available is iCompositionBuffIdx %d.\n",iCompositionBuffIdx );
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break;
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}
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}
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}
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}
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break;
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case RDisplayChannel::EReqPostUserBuffer:
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r= Kern::ThreadRawRead(aClient, aArg1, &pack, (sizeof(TInt)*2));
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if ( r == KErrNone)
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{
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r = KErrArgument;
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buffer_id = pack[0];
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if ( (buffer_id > 0) && (buffer_id <= KDisplayUBMax) )
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{
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node = FindUserBufferNode(buffer_id);
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if(node && (!(node->iFree) && node->iChunk ) )
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{
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__DEBUG_PRINT2("EReqPostUserBuffer Posting buffer id: %d \n",buffer_id );
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r = Pdd()->PostUserBuffer(node);
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if(r == KErrNone)
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{
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++iCurrentPostCount;
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r=Kern::ThreadRawWrite(aClient, aArg2, (const TAny *)&iCurrentPostCount, sizeof(RDisplayChannel::TPostCount), aClient);
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break;
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}
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}
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}
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RequestComplete(RDisplayChannel::EReqPostUserBuffer, r);
|
|
|
359 |
}
|
|
|
360 |
break;
|
|
|
361 |
|
|
|
362 |
case RDisplayChannel::EReqWaitForPost:
|
|
|
363 |
r= Kern::ThreadRawRead(aClient, aArg1, &count, sizeof(RDisplayChannel::TPostCount));
|
|
|
364 |
if ( r == KErrNone)
|
|
|
365 |
{
|
|
|
366 |
iRequestedPostCount = count;
|
|
|
367 |
//Any post operation increases iCurrentPostCount instantly but the actual post completes later on.
|
|
|
368 |
if( ! Pdd()->PostPending() )
|
|
|
369 |
{
|
|
|
370 |
RequestComplete(RDisplayChannel::EReqWaitForPost, KErrNone);
|
|
|
371 |
}
|
|
|
372 |
}
|
|
|
373 |
break;
|
|
|
374 |
|
|
|
375 |
default:
|
|
|
376 |
r = KErrNotSupported;
|
|
|
377 |
break;
|
|
|
378 |
}
|
|
|
379 |
return r;
|
|
|
380 |
}
|
|
|
381 |
|
|
|
382 |
|
|
|
383 |
/**
|
|
|
384 |
Synchronous requests processing.
|
|
|
385 |
|
|
|
386 |
@param aFunction request function number,
|
|
|
387 |
@param apArg1 pointer to the 1st parameter
|
|
|
388 |
@param apArg2 pointer to the 2n parameter
|
|
|
389 |
|
|
|
390 |
@return request processing result
|
|
|
391 |
*/
|
|
|
392 |
TInt DDisplayLdd::DoControl(TInt aFunction, TAny* aArg1, TAny* aArg2, DThread* aClient)
|
|
|
393 |
{
|
|
|
394 |
TInt r = KErrNotSupported;
|
|
|
395 |
TBool changedRot = ETrue;
|
|
|
396 |
TBufferNode* node = 0;
|
|
|
397 |
TInt buffer_id;
|
|
|
398 |
TInt pack[2] = {0,0};
|
|
|
399 |
TInt handle, offset;
|
|
|
400 |
TInt index = 0;
|
|
|
401 |
|
|
|
402 |
TPckgBuf<RDisplayChannel::TDisplayInfo> pckgInfo(iDisplayInfo);
|
|
|
403 |
|
|
|
404 |
switch (aFunction)
|
|
|
405 |
{
|
|
|
406 |
case RDisplayChannel::ECtrlGetDisplayInfo:
|
|
|
407 |
r=Kern::ThreadRawWrite(aClient, aArg1, (const TAny *)&pckgInfo, sizeof(pckgInfo), aClient);
|
|
|
408 |
break;
|
|
|
409 |
|
|
|
410 |
case RDisplayChannel::ECtrlPostCompositionBuffer:
|
|
|
411 |
node = &iCompositionBuffer[iCompositionBuffIdx];
|
|
|
412 |
r = Pdd()->PostCompositionBuffer(node);
|
|
|
413 |
if(r == KErrNone)
|
|
|
414 |
{
|
|
|
415 |
++iCurrentPostCount;
|
|
|
416 |
r=Kern::ThreadRawWrite(aClient, aArg2, (const TAny *)&iCurrentPostCount, sizeof(RDisplayChannel::TPostCount), aClient);
|
|
|
417 |
}
|
|
|
418 |
else
|
|
|
419 |
{
|
|
|
420 |
r = KErrGeneral;
|
|
|
421 |
}
|
|
|
422 |
break;
|
|
|
423 |
|
|
|
424 |
case RDisplayChannel::ECtrlPostLegacyBuffer:
|
|
|
425 |
r= Pdd()->PostLegacyBuffer();
|
|
|
426 |
if ( r == KErrNone)
|
|
|
427 |
{
|
|
|
428 |
++iCurrentPostCount;
|
|
|
429 |
r = Kern::ThreadRawWrite(aClient, aArg2, (const TAny *)&iCurrentPostCount, sizeof(RDisplayChannel::TPostCount), aClient);
|
|
|
430 |
}
|
|
|
431 |
break;
|
|
|
432 |
|
|
|
433 |
case RDisplayChannel::ECtrlRegisterUserBuffer:
|
|
|
434 |
node = FindUserBufferNode(0);
|
|
|
435 |
if(node)
|
|
|
436 |
{
|
|
|
437 |
r= Kern::ThreadRawRead(aClient, aArg1, &pack, (sizeof(TInt)*2));
|
|
|
438 |
if(r == KErrNone)
|
|
|
439 |
{
|
|
|
440 |
handle = pack[0];
|
|
|
441 |
offset = pack[1];
|
|
|
442 |
r = CheckAndOpenUserBuffer(node, handle, offset, aClient);
|
|
|
443 |
|
|
|
444 |
if(r == KErrNone)
|
|
|
445 |
{
|
|
|
446 |
r= Kern::ThreadRawWrite(aClient, aArg2, (const TAny *)&node->iBufferId, sizeof(TInt), aClient);
|
|
|
447 |
}
|
|
|
448 |
}
|
|
|
449 |
}
|
|
|
450 |
else
|
|
|
451 |
{
|
|
|
452 |
r = KErrTooBig;
|
|
|
453 |
}
|
|
|
454 |
break;
|
|
|
455 |
|
|
|
456 |
case RDisplayChannel::ECtrlDeregisterUserBuffer:
|
|
|
457 |
r= Kern::ThreadRawRead(aClient, aArg1, &buffer_id, sizeof(TInt));
|
|
|
458 |
if ( r == KErrNone)
|
|
|
459 |
{
|
|
|
460 |
r = KErrArgument;
|
|
|
461 |
if ( (buffer_id > 0) && (buffer_id <= KDisplayUBMax) )
|
|
|
462 |
{
|
|
|
463 |
node = FindUserBufferNode(buffer_id);
|
|
|
464 |
if(node && (!(node->iFree) && node->iChunk ) )
|
|
|
465 |
{
|
|
|
466 |
if(node->iState==EBufferFree || node->iState==EBufferCompose )
|
|
|
467 |
{
|
|
|
468 |
r = FreeUserBufferNode(node);
|
|
|
469 |
}
|
|
|
470 |
else
|
|
|
471 |
{
|
|
|
472 |
r = KErrInUse;
|
|
|
473 |
}
|
|
|
474 |
}
|
|
|
475 |
}
|
|
|
476 |
}
|
|
|
477 |
break;
|
|
|
478 |
|
|
|
479 |
case RDisplayChannel::ECtrlPostCount:
|
|
|
480 |
r= Kern::ThreadRawWrite(aClient, aArg1, (const TAny *)&iCurrentPostCount, sizeof(TUint), aClient);
|
|
|
481 |
break;
|
|
|
482 |
|
|
|
483 |
case RDisplayChannel::ECtrlSetRotation:
|
|
|
484 |
{
|
|
|
485 |
RDisplayChannel::TDisplayRotation rot;
|
|
|
486 |
TInt previousRot = iCurrentRotation;
|
|
|
487 |
r= Kern::ThreadRawRead(aClient, aArg1, &rot, sizeof(RDisplayChannel::TDisplayRotation));
|
|
|
488 |
if ( r == KErrNone)
|
|
|
489 |
{
|
|
|
490 |
r = Pdd()->SetRotation((TInt)rot);
|
|
|
491 |
changedRot=(previousRot!=iCurrentRotation);
|
|
|
492 |
if( r == KErrNone)
|
|
|
493 |
{
|
|
|
494 |
r= Kern::ThreadRawWrite(aClient, aArg2, (const TAny *)&changedRot, sizeof(TBool), aClient);
|
|
|
495 |
}
|
|
|
496 |
}
|
|
|
497 |
}
|
|
|
498 |
break;
|
|
|
499 |
|
|
|
500 |
case RDisplayChannel::ECtrlCurrentRotation:
|
|
|
501 |
r=Kern::ThreadRawWrite(aClient, aArg1, (const TAny *)&iCurrentRotation, sizeof(RDisplayChannel::TDisplayRotation), aClient);
|
|
|
502 |
break;
|
|
|
503 |
|
|
|
504 |
case RDisplayChannel::ECtrlGetCompositionBufferInfo:
|
|
|
505 |
{
|
|
|
506 |
r= Kern::ThreadRawRead(aClient, aArg1, &index, sizeof(TInt));
|
|
|
507 |
if ( r == KErrNone)
|
|
|
508 |
{
|
|
|
509 |
if( (index >= KDisplayCBMax ) || (index < 0 ) )
|
|
|
510 |
{
|
|
|
511 |
r = KErrArgument;
|
|
|
512 |
break;
|
|
|
513 |
}
|
|
|
514 |
r = Kern::MakeHandleAndOpen(aClient, iCompositionBuffer[index].iChunk);
|
|
|
515 |
|
|
|
516 |
if(r >= KErrNone)
|
|
|
517 |
{
|
|
|
518 |
pack[0] = r;
|
|
|
519 |
pack[1] = iCompositionBuffer[index].iOffset;
|
|
|
520 |
r=Kern::ThreadRawWrite(aClient, aArg2, &pack, (sizeof(TInt)*2), aClient);
|
|
|
521 |
}
|
|
|
522 |
}
|
|
|
523 |
break;
|
|
|
524 |
}
|
|
|
525 |
|
|
|
526 |
default:
|
|
|
527 |
r = KErrNotSupported;
|
|
|
528 |
break;
|
|
|
529 |
};
|
|
|
530 |
return r;
|
|
|
531 |
}
|
|
|
532 |
|
|
|
533 |
|
|
|
534 |
/**
|
|
|
535 |
Open a shared Chunk for the User buffer and then set the appropriate values for the
|
|
|
536 |
User buffer node attributes.
|
|
|
537 |
|
|
|
538 |
*/
|
|
|
539 |
TInt DDisplayLdd::CheckAndOpenUserBuffer(TBufferNode* aNode, TInt aHandle, TInt aOffset, DThread* aClient)
|
|
|
540 |
{
|
|
|
541 |
|
|
|
542 |
TInt size = 0;
|
|
|
543 |
DChunk* chunk = 0;
|
|
|
544 |
TLinAddr kernelAddress = 0;
|
|
|
545 |
TUint32 mapAttr = 0;
|
|
|
546 |
TUint32 physicalAddress = 0;
|
|
|
547 |
TUint32 *physicalPageList = 0;
|
|
|
548 |
TInt r = KErrBadHandle;
|
|
|
549 |
|
|
|
550 |
NKern::ThreadEnterCS();
|
|
|
551 |
chunk = Kern::OpenSharedChunk(aClient, aHandle, EFalse);
|
|
|
552 |
NKern::ThreadLeaveCS();
|
|
|
553 |
if(chunk)
|
|
|
554 |
{
|
|
|
555 |
// Using iOffsetBetweenLines rather than iWidth as the controller may be using stride
|
|
|
556 |
size = iDisplayInfo.iNormal.iOffsetBetweenLines * iDisplayInfo.iNormal.iHeight;
|
|
|
557 |
|
|
|
558 |
r = Kern::ChunkPhysicalAddress(chunk, aOffset, size, kernelAddress, mapAttr, physicalAddress, physicalPageList);
|
|
|
559 |
if( r == KErrNone )
|
|
|
560 |
{
|
|
|
561 |
aNode->iChunk = chunk;
|
|
|
562 |
aNode->iFree = EFalse;
|
|
|
563 |
aNode->iState = EBufferCompose;
|
|
|
564 |
aNode->iAddress = (TUint32)kernelAddress;
|
|
|
565 |
aNode->iHandle = aHandle;
|
|
|
566 |
aNode->iPhysicalAddress = physicalAddress;
|
|
|
567 |
}
|
|
|
568 |
else
|
|
|
569 |
{ // we have an error here, close the chunk
|
|
|
570 |
r = KErrArgument;
|
|
|
571 |
Kern::ChunkClose(chunk);
|
|
|
572 |
}
|
|
|
573 |
}
|
|
|
574 |
return (r);
|
|
|
575 |
}
|
|
|
576 |
|
|
|
577 |
|
|
|
578 |
/**
|
|
|
579 |
Return any free buffer when trying to register a User buffer( aBufferId ==0 )
|
|
|
580 |
or return the specified User buffer( used by Deregister and PostUserBuffer).
|
|
|
581 |
In the second case checks about the state of the user buffer are specific to
|
|
|
582 |
each case.
|
|
|
583 |
|
|
|
584 |
*/
|
|
|
585 |
TBufferNode* DDisplayLdd::FindUserBufferNode(TInt aBufferId)
|
|
|
586 |
{
|
|
|
587 |
TBufferNode* node = 0;
|
|
|
588 |
|
|
|
589 |
if(aBufferId == 0)
|
|
|
590 |
{
|
|
|
591 |
for(TInt i = 0; i < KDisplayUBMax; i++)
|
|
|
592 |
{
|
|
|
593 |
if(iUserBuffer[i].iFree)
|
|
|
594 |
{
|
|
|
595 |
node = &iUserBuffer[i];
|
|
|
596 |
break;
|
|
|
597 |
}
|
|
|
598 |
}
|
|
|
599 |
}
|
|
|
600 |
else
|
|
|
601 |
{
|
|
|
602 |
node = &iUserBuffer[aBufferId-1];
|
|
|
603 |
}
|
|
|
604 |
return (node);
|
|
|
605 |
}
|
|
|
606 |
|
|
|
607 |
|
|
|
608 |
/**
|
|
|
609 |
Free user buffer by reseting all the appropriate fields and closing the corresponding chunk.
|
|
|
610 |
*/
|
|
|
611 |
TInt DDisplayLdd::FreeUserBufferNode(TBufferNode* aNode)
|
|
|
612 |
{
|
|
|
613 |
__DEBUG_PRINT2("FreeUserBufferNode with aNode->iAddress %08x.\n",aNode->iAddress );
|
|
|
614 |
TInt r = KErrNone;
|
|
|
615 |
NKern::ThreadEnterCS();
|
|
|
616 |
if(aNode->iChunk != 0)
|
|
|
617 |
{
|
|
|
618 |
r= Kern::ChunkClose(aNode->iChunk);
|
|
|
619 |
}
|
|
|
620 |
if( r== KErrNone)
|
|
|
621 |
{
|
|
|
622 |
aNode->iState = EBufferFree;
|
|
|
623 |
aNode->iFree = ETrue;
|
|
|
624 |
aNode->iAddress = 0;
|
|
|
625 |
aNode->iSize = 0;
|
|
|
626 |
aNode->iHandle = 0;
|
|
|
627 |
aNode->iChunk = 0;
|
|
|
628 |
}
|
|
|
629 |
else
|
|
|
630 |
{
|
|
|
631 |
__DEBUG_PRINT("Failed to close chunk\n");
|
|
|
632 |
}
|
|
|
633 |
NKern::ThreadLeaveCS();
|
|
|
634 |
|
|
|
635 |
return r;
|
|
|
636 |
}
|
|
|
637 |
|
|
|
638 |
|
|
|
639 |
/**
|
|
|
640 |
Calls CompleteRequest( which internally sends a Kern::RequestComplete message )for the specified request and with the reason passed,
|
|
|
641 |
in case such an asynchronous request is pending. Also resets the pending queue fields for that request if it was actually pending.
|
|
|
642 |
Called by both the LDD and PDD.
|
|
|
643 |
|
|
|
644 |
*/
|
|
|
645 |
TInt DDisplayLdd::RequestComplete(TInt aRequest, TInt aReason)
|
|
|
646 |
{
|
|
|
647 |
TBool flag = EFalse;
|
|
|
648 |
|
|
|
649 |
switch (aRequest)
|
|
|
650 |
{
|
|
|
651 |
case RDisplayChannel::EReqGetCompositionBuffer:
|
|
|
652 |
{
|
|
|
653 |
__DEBUG_PRINT2("RequestComplete() called with a RDisplayChannel::EReqGetCompositionBuffer request and reason %d\n",aReason );
|
|
|
654 |
|
|
|
655 |
if(iPendingReq[RDisplayChannel::EReqGetCompositionBuffer].iStatus)
|
|
|
656 |
{
|
|
|
657 |
__DEBUG_PRINT("RequestComplete(): Calling CompleteRequest EReqGetCompositionBuffer \n");
|
|
|
658 |
flag = ETrue;
|
|
|
659 |
}
|
|
|
660 |
break;
|
|
|
661 |
}
|
|
|
662 |
|
|
|
663 |
case RDisplayChannel::EReqWaitForPost:
|
|
|
664 |
{
|
|
|
665 |
__DEBUG_PRINT2("RequestComplete() called with a RDisplayChannel::EReqWaitForPost request and reason %d\n",aReason );
|
|
|
666 |
|
|
|
667 |
if((iPendingReq[RDisplayChannel::EReqWaitForPost].iStatus != 0) && (iCurrentPostCount >= iRequestedPostCount) )
|
|
|
668 |
{
|
|
|
669 |
__DEBUG_PRINT("RequestComplete(): Calling CompleteRequest EReqWaitForPost \n");
|
|
|
670 |
flag = ETrue;
|
|
|
671 |
}
|
|
|
672 |
break;
|
|
|
673 |
}
|
|
|
674 |
|
|
|
675 |
case RDisplayChannel::EReqPostUserBuffer:
|
|
|
676 |
{
|
|
|
677 |
__DEBUG_PRINT2("RequestComplete() called with a RDisplayChannel::EReqPostUserBuffer request and reason %d\n",aReason );
|
|
|
678 |
|
|
|
679 |
if((iPendingReq[RDisplayChannel::EReqPostUserBuffer].iStatus != 0) )
|
|
|
680 |
{
|
|
|
681 |
__DEBUG_PRINT("RequestComplete(): Calling CompleteRequest EReqPostUserBuffer \n");
|
|
|
682 |
flag = ETrue;
|
|
|
683 |
}
|
|
|
684 |
break;
|
|
|
685 |
}
|
|
|
686 |
default:
|
|
|
687 |
__DEBUG_PRINT("RequestComplete() called for an unknown request\n");
|
|
|
688 |
return KErrGeneral;
|
|
|
689 |
|
|
|
690 |
}
|
|
|
691 |
|
|
|
692 |
if (flag)
|
|
|
693 |
{
|
|
|
694 |
CompleteRequest(iPendingReq[aRequest].iOwningThread,iPendingReq[aRequest].iStatus,aReason);
|
|
|
695 |
iPendingReq[aRequest].iStatus = 0;
|
|
|
696 |
iPendingReq[aRequest].iOwningThread = 0;
|
|
|
697 |
}
|
|
|
698 |
|
|
|
699 |
return KErrNone;
|
|
|
700 |
}
|
|
|
701 |
|
|
|
702 |
|
|
|
703 |
/**
|
|
|
704 |
Complete an asynchronous request back to the client.
|
|
|
705 |
@param aThread The client thread which issued the request.
|
|
|
706 |
@param aStatus The TRequestStatus instance that will receive the request status code.
|
|
|
707 |
@param aReason The request status code.
|
|
|
708 |
@pre The thread must be in a critical section.
|
|
|
709 |
*/
|
|
|
710 |
void DDisplayLdd::CompleteRequest(DThread* aThread, TRequestStatus*& aStatus, TInt aReason)
|
|
|
711 |
{
|
|
|
712 |
Kern::RequestComplete(aThread,aStatus,aReason); // Complete the request back to the client.
|
|
|
713 |
|
|
|
714 |
aThread->AsyncClose(); // Asynchronously close our reference on the client thread - don't want to be blocked if this is final reference.
|
|
|
715 |
|
|
|
716 |
#ifdef _DEBUG
|
|
|
717 |
__e32_atomic_add_ord32(&iThreadOpenCount, TUint32(-1));
|
|
|
718 |
#endif
|
|
|
719 |
|
|
|
720 |
}
|
|
|
721 |
|
|
|
722 |
|
|
|
723 |
|
|
|
724 |
/**
|
|
|
725 |
static factory function for the LDD.
|
|
|
726 |
|
|
|
727 |
@return pointer to the created (or existing) instance of the class
|
|
|
728 |
*/
|
|
|
729 |
DDisplayLdd* DDisplayLdd::CreateInstance()
|
|
|
730 |
{
|
|
|
731 |
__DEBUG_PRINT("DDisplayLdd::CreateInstance()\n");
|
|
|
732 |
// create LDD channel instance
|
|
|
733 |
DDisplayLdd* obj = new DDisplayLdd();
|
|
|
734 |
return obj;
|
|
|
735 |
|
|
|
736 |
}
|
|
|
737 |
|
|
|
738 |
|
|
|
739 |
/************************************************************************************
|
|
|
740 |
* LDD factory, DDisplayLddFactory class implementation
|
|
|
741 |
************************************************************************************/
|
|
|
742 |
|
|
|
743 |
/**
|
|
|
744 |
Constructor
|
|
|
745 |
*/
|
|
|
746 |
DDisplayLddFactory::DDisplayLddFactory()
|
|
|
747 |
{
|
|
|
748 |
__DEBUG_PRINT("DDisplayLddFactory::DDisplayLddFactory() \n");
|
|
|
749 |
|
|
|
750 |
iParseMask = KDeviceAllowPhysicalDevice | KDeviceAllowUnit ;
|
|
|
751 |
|
|
|
752 |
iVersion = TVersion( KDisplayChMajorVersionNumber,
|
|
|
753 |
KDisplayChMinorVersionNumber,
|
|
|
754 |
KDisplayChBuildVersionNumber);
|
|
|
755 |
|
|
|
756 |
iUnitsOpenMask =0;
|
|
|
757 |
}
|
|
|
758 |
|
|
|
759 |
|
|
|
760 |
/**
|
|
|
761 |
Destructor
|
|
|
762 |
*/
|
|
|
763 |
DDisplayLddFactory::~DDisplayLddFactory()
|
|
|
764 |
{
|
|
|
765 |
}
|
|
|
766 |
|
|
|
767 |
|
|
|
768 |
/**
|
|
|
769 |
static factory function for the LDD factory.
|
|
|
770 |
|
|
|
771 |
@return pointer to the created instance of the class
|
|
|
772 |
*/
|
|
|
773 |
DDisplayLddFactory* DDisplayLddFactory::CreateInstance()
|
|
|
774 |
|
|
|
775 |
{
|
|
|
776 |
__DEBUG_PRINT("DDisplayLddFactory::CreateInstance() \n");
|
|
|
777 |
|
|
|
778 |
DDisplayLddFactory* obj = new DDisplayLddFactory;
|
|
|
779 |
return obj;
|
|
|
780 |
}
|
|
|
781 |
|
|
|
782 |
|
|
|
783 |
/**
|
|
|
784 |
Set our name and return error code
|
|
|
785 |
*/
|
|
|
786 |
TInt DDisplayLddFactory::Install()
|
|
|
787 |
|
|
|
788 |
{
|
|
|
789 |
__DEBUG_PRINT("DDisplayLddFactory::Install() \n");
|
|
|
790 |
return SetName(&RDisplayChannel::Name());
|
|
|
791 |
}
|
|
|
792 |
|
|
|
793 |
|
|
|
794 |
void DDisplayLddFactory::GetCaps(TDes8& /*aDes*/) const
|
|
|
795 |
|
|
|
796 |
{
|
|
|
797 |
//No action.
|
|
|
798 |
}
|
|
|
799 |
|
|
|
800 |
|
|
|
801 |
/**
|
|
|
802 |
LDD factory function. Creates LDD object.
|
|
|
803 |
|
|
|
804 |
@param aChannel A pointer to an LDD channel object which will be initialised on return.
|
|
|
805 |
|
|
|
806 |
@return KErrNone if object successfully allocated, KErrNoMemory if not.
|
|
|
807 |
*/
|
|
|
808 |
TInt DDisplayLddFactory::Create(DLogicalChannelBase*& aChannel)
|
|
|
809 |
{
|
|
|
810 |
__DEBUG_PRINT("DDisplayLddFactory::Create \n");
|
|
|
811 |
aChannel = DDisplayLdd::CreateInstance();
|
|
|
812 |
return (!aChannel)? KErrNoMemory : KErrNone;
|
|
|
813 |
}
|
|
|
814 |
|
|
|
815 |
|
|
|
816 |
|
|
|
817 |
/**
|
|
|
818 |
Check whether a channel is currently open on the specified unit.
|
|
|
819 |
@param aUnit The number of the unit to be checked.
|
|
|
820 |
@return ETrue if a channel is open on the specified channel, EFalse otherwise.
|
|
|
821 |
@pre The unit info. mutex must be held.
|
|
|
822 |
*/
|
|
|
823 |
TBool DDisplayLddFactory::IsUnitOpen(TInt aUnit)
|
|
|
824 |
{
|
|
|
825 |
return(iUnitsOpenMask&(1<<aUnit));
|
|
|
826 |
}
|
|
|
827 |
|
|
|
828 |
|
|
|
829 |
/**
|
|
|
830 |
Attempt to change the state of the channel open status for a particular channel.
|
|
|
831 |
@param aUnit The number of the unit to be updated.
|
|
|
832 |
@param aIsOpenSetting The required new state for the channel open status: either ETrue to set the status to open or
|
|
|
833 |
EFalse to set the status to closed.
|
|
|
834 |
@return KErrNone if the status was updated successfully, KErrInUse if an attempt has been made to set the channnel status
|
|
|
835 |
to open while it is already open.
|
|
|
836 |
*/
|
|
|
837 |
TInt DDisplayLddFactory::SetUnitOpen(TInt aUnit,TBool aIsOpenSetting)
|
|
|
838 |
{
|
|
|
839 |
|
|
|
840 |
NKern::FMWait(&iUnitInfoMutex); // Acquire the unit info. mutex.
|
|
|
841 |
|
|
|
842 |
// Fail a request to open an channel that is already open
|
|
|
843 |
if (aIsOpenSetting && IsUnitOpen(aUnit))
|
|
|
844 |
{
|
|
|
845 |
NKern::FMSignal(&iUnitInfoMutex); // Release the unit info. mutex.
|
|
|
846 |
return(KErrInUse);
|
|
|
847 |
}
|
|
|
848 |
|
|
|
849 |
// Update the open status as requested
|
|
|
850 |
if (aIsOpenSetting)
|
|
|
851 |
iUnitsOpenMask|=(1<<aUnit);
|
|
|
852 |
else
|
|
|
853 |
iUnitsOpenMask&=~(1<<aUnit);
|
|
|
854 |
|
|
|
855 |
NKern::FMSignal(&iUnitInfoMutex); // Release the unit info. mutex.
|
|
|
856 |
return(KErrNone);
|
|
|
857 |
}
|
|
|
858 |
|
|
|
859 |
|
|
|
860 |
/**
|
|
|
861 |
"Standard LDD" entrypoint.
|
|
|
862 |
|
|
|
863 |
Is called on CreateLogicalDevice() if the user calls LoadLogicalDevice(). Creates LDD factory.
|
|
|
864 |
|
|
|
865 |
@return pointer to the LDD factory object.
|
|
|
866 |
*/
|
|
|
867 |
DECLARE_STANDARD_LDD()
|
|
|
868 |
{
|
|
|
869 |
__DEBUG_PRINT("DECLARE_STANDARD_LDD() \n");
|
|
|
870 |
DDisplayLddFactory* pLDDFactory = DDisplayLddFactory::CreateInstance();
|
|
|
871 |
return pLDDFactory;
|
|
|
872 |
}
|
|
|
873 |
|
|
|
874 |
|
|
|
875 |
|
|
|
876 |
|