author | Pat Downey <patd@symbian.org> |
Wed, 01 Sep 2010 12:35:00 +0100 | |
branch | RCL_3 |
changeset 43 | 012cc2ee6408 |
parent 42 | f92a4f87e424 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1997-2009 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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* |
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*/ |
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|
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#include "AcmPortFactory.h" |
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#include "AcmUtils.h" |
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#include <acminterface.h> |
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#include "AcmPort.h" |
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#include "AcmPanic.h" |
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#include "acmserver.h" |
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#include "CdcAcmClass.h" |
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#include <usb/usblogger.h> |
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#include "c32comm_internal.h" |
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#ifdef __FLOG_ACTIVE |
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_LIT8(KLogComponent, "ECACM"); |
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#endif |
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// Do not move this into a header file. It must be kept private to the CSY. It |
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// is the secret information that enables the old (registration port) |
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// mechanism allowing the USB Manager to set up ACM interfaces. |
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const TUint KRegistrationPortUnit = 666; |
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CAcmPortFactory* CAcmPortFactory::NewL() |
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/** |
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* Make a new CAcmPortFactory |
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* |
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* @return Ownership of a newly created CAcmPortFactory object |
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*/ |
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{ |
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LOG_STATIC_FUNC_ENTRY |
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CAcmPortFactory* self = new(ELeave) CAcmPortFactory; |
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CleanupClosePushL(*self); |
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self->ConstructL(); |
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CleanupStack::Pop(); |
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return self; |
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} |
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CAcmPortFactory::CAcmPortFactory() |
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/** |
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* Constructor. |
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*/ |
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{ |
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iVersion = TVersion( |
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KEC32MajorVersionNumber, |
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KEC32MinorVersionNumber, |
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KEC32BuildVersionNumber); |
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iConfigBuf().iAcmConfigVersion = 1; |
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iOwned = EFalse; |
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} |
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void CAcmPortFactory::ConstructL() |
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/** |
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* Second phase constructor. |
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*/ |
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{ |
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LEAVEIFERRORL(SetName(&KAcmSerialName)); |
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iAcmServer = CAcmServer::NewL(*this); |
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TInt err = RProperty::Define(KUidSystemCategory, KAcmKey, RProperty::EByteArray, TPublishedAcmConfigs::KAcmMaxFunctions); |
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if(err == KErrAlreadyExists) |
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{ |
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LEAVEIFERRORL(iAcmProperty.Attach(KUidSystemCategory, KAcmKey, EOwnerThread)); |
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//Since the P&S data already exists we need to retrieve it |
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LEAVEIFERRORL(iAcmProperty.Get(iConfigBuf)); |
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} |
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else if(err == KErrNone) |
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{ |
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//A blank iConfigBuf already exists at this point to we don't need to do anything to it |
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//before publishing the P&S data |
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LEAVEIFERRORL(iAcmProperty.Attach(KUidSystemCategory, KAcmKey, EOwnerThread)); |
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PublishAcmConfig(); |
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iOwned = ETrue; |
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} |
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else |
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{ |
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LEAVEIFERRORL(err); //This will always leave, but a log will be created at least. |
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} |
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} |
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/** |
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* Utility function for publishing the TPublishedAcmConfigs data |
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* @pre Requires iAcmProperty to be attached before it is called |
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*/ |
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void CAcmPortFactory::PublishAcmConfig() |
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{ |
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// Update the publish and subscribe info |
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TInt err = iAcmProperty.Set(iConfigBuf); |
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__ASSERT_DEBUG(err == KErrNone, _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
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(void)err; |
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} |
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TSecurityPolicy CAcmPortFactory::PortPlatSecCapability (TUint aPort) const |
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/** |
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* Called by C32 when it needs to check the capabilities of a client against the |
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* capabilites required to perform C32 defered operations on this port, aPort. |
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* |
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* @param aPort The number of the port. |
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* @return a security policy |
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115 |
*/ |
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//return the security policy for the given port number, aPort. |
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117 |
{ |
43 | 118 |
LOG_FUNC |
119 |
||
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120 |
TSecurityPolicy securityPolicy; |
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if ( aPort == KRegistrationPortUnit ) |
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122 |
{ |
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securityPolicy = TSecurityPolicy(ECapabilityNetworkControl); |
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124 |
} |
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125 |
else |
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126 |
{ |
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securityPolicy = TSecurityPolicy(ECapabilityLocalServices); |
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128 |
} |
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return securityPolicy; |
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130 |
} |
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131 |
|
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void CAcmPortFactory::AcmPortClosed(const TUint aUnit) |
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133 |
/** |
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* Called by an ACM port when it is closed. |
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135 |
* |
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* @param aUnit The port number of the closing port. |
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137 |
*/ |
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{ |
43 | 139 |
LOG_FUNC |
140 |
LOGTEXT2(_L8("\taUnit = %d"), aUnit); |
|
141 |
||
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// I would assert that the calling port is stored in our array, but if we |
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// ran out of memory during CAcmPort::NewL, this function would be called |
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// from the port's destructor, but the slot in the port array would still |
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// be NULL. |
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146 |
|
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// Reset the slot in our array of ports. |
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const TUint index = aUnit - KAcmLowUnit; |
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iAcmPortArray[index] = NULL; |
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150 |
|
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151 |
#ifdef _DEBUG |
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LogPortsAndFunctions(); |
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#endif |
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154 |
} |
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155 |
|
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CAcmPortFactory::~CAcmPortFactory() |
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157 |
/** |
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* Destructor. |
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159 |
*/ |
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160 |
{ |
43 | 161 |
LOG_FUNC |
162 |
||
0
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// Delete ACM instances. We could assert that the ACM Class Controller has |
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// caused them all to be destroyed, but if we do that, and USBSVR panics |
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// while it's Started, it will result in C32 panicking too, which is |
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// undesirable. TODO: I'm not sure about this philosophy. |
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iAcmClassArray.ResetAndDestroy(); |
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168 |
|
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// We don't need to clean this array up because C32 will not shut us down |
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// while ports are still open on us. |
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iAcmPortArray.Close(); |
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172 |
|
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// Detach the local handles |
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iAcmProperty.Close(); |
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175 |
|
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// Remove the RProperty entries if they are owned by this instance of the PortFactory |
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177 |
if(iOwned) |
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178 |
{ |
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RProperty::Delete(KUidSystemCategory, KAcmKey); |
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180 |
} |
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181 |
|
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delete iAcmServer; |
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183 |
} |
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184 |
|
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CPort* CAcmPortFactory::NewPortL(const TUint aUnit) |
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186 |
/** |
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* Downcall from C32. Create a new port for the supplied unit number. |
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188 |
* |
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* @param aUnit Port unit number |
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190 |
*/ |
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191 |
{ |
43 | 192 |
LOG_LINE |
193 |
LOGTEXT2(_L8(">>CAcmPortFactory::NewPortL aUnit=%d"), aUnit); |
|
194 |
||
0
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CPort* port = NULL; |
43 | 196 |
|
0
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TUint lowerLimit = KAcmLowUnit; // This non-const TUint avoids compiler remarks (low-level warnings) for the following comparisons.. |
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// ACM ports |
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if ( (aUnit >= lowerLimit) && aUnit < static_cast<TUint>( iAcmClassArray.Count()) + KAcmLowUnit) |
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200 |
{ |
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201 |
// Can only create an ACM port if the corresponding ACM interface |
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// itself has been created. We keep the slots in the iAcmClassArray array |
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// up-to-date with how many ACM interface instances have been created. |
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const TUint index = aUnit - KAcmLowUnit; |
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if ( iAcmPortArray[index] ) |
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206 |
{ |
43 | 207 |
LEAVEIFERRORL(KErrInUse); // TODO: is this ever executed? |
0
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208 |
} |
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209 |
iAcmPortArray[index] = CAcmPort::NewL(aUnit, *this); |
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210 |
iAcmPortArray[index]->SetAcm( iAcmClassArray[index]); |
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211 |
port = iAcmPortArray[index]; |
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212 |
} |
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213 |
// Registration port |
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else if ( aUnit == KRegistrationPortUnit ) |
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215 |
{ |
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port = CRegistrationPort::NewL(*this, KRegistrationPortUnit); |
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} |
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218 |
else |
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{ |
43 | 220 |
LEAVEIFERRORL(KErrAccessDenied); |
0
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221 |
} |
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222 |
|
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223 |
#ifdef _DEBUG |
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LogPortsAndFunctions(); |
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225 |
#endif |
43 | 226 |
|
227 |
LOGTEXT2(_L8("<<CAcmPortFactory::NewPortL port=0x%08x"), port); |
|
0
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228 |
return port; |
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229 |
} |
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|
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void CAcmPortFactory::DestroyFunctions(const TUint aNoAcms) |
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/** |
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* Utility to delete ACM functions in the array. Deletes ACM functions and |
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* resizes the ACM array down. Also tells each of the affected ACM ports that |
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* its function has gone down. |
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* |
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* @param aNoAcms Number of ACM interfaces to destroy. |
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*/ |
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{ |
43 | 240 |
LOGTEXT2(_L8(">>CAcmPortFactory::DestroyFunctions aNoAcms = %d"), aNoAcms); |
241 |
||
0
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#ifdef _DEBUG |
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CheckAcmArray(); |
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#endif |
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|
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for ( TUint ii = 0 ; ii < aNoAcms ; ii++ ) |
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{ |
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const TUint index = iAcmClassArray.Count() - 1; |
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|
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// Inform the relevant ACM ports, if any, so they can complete |
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// outstanding requests. NB The ACM port array should have been padded |
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// up adequately, but not necessarily filled with ports. |
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if ( iAcmPortArray[index] ) |
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{ |
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iAcmPortArray[index]->SetAcm(NULL); |
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// Don't remove slots from the ACM port array, because higher- |
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// indexed ports might still be open. |
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} |
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|
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// Destroy ACM interface. |
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delete iAcmClassArray[index]; |
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iAcmClassArray.Remove(index); |
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} |
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|
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//decrement the published configurations counter |
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iConfigBuf().iAcmCount -= aNoAcms; |
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PublishAcmConfig(); |
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|
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#ifdef _DEBUG |
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CheckAcmArray(); |
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LogPortsAndFunctions(); |
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#endif |
43 | 273 |
|
274 |
LOGTEXT(_L8("<<CAcmPortFactory::DestroyFunctions")); |
|
0
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} |
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|
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void CAcmPortFactory::CheckAcmArray() |
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/** |
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* Utility to check that each slot in the ACM interface array points to |
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* something valid. NB It is the ACM port array which may contain empty slots. |
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*/ |
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{ |
43 | 283 |
LOG_FUNC |
284 |
||
0
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for ( TUint ii = 0; ii < static_cast<TUint>( iAcmClassArray.Count()) ; ii++ ) |
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{ |
43 | 287 |
__ASSERT_DEBUG( iAcmClassArray[ii], _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
0
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} |
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} |
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|
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TInt CAcmPortFactory::CreateFunctions(const TUint aNoAcms, const TUint8 aProtocolNum, const TDesC16& aAcmControlIfcName, const TDesC16& aAcmDataIfcName) |
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/** |
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* Tries to create the ACM functions. |
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* |
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* @param aNoAcms Number of ACM functions to create. |
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* @param aProtocolNum Protocol setting to use for these ACM functions. |
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* @param aAcmControlIfcName Control Interface Name or a null descriptor |
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* @param aAcmDataIfcName Data Interface Name or a null descriptor |
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*/ |
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|
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{ |
43 | 301 |
LOGTEXT5(_L("\taNoAcms = %d, aProtocolNum = %d, Control Ifc Name = %S, Data Ifc Name = %S"), |
302 |
aNoAcms, aProtocolNum, &aAcmControlIfcName, &aAcmDataIfcName); |
|
0
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|
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#ifdef _DEBUG |
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CheckAcmArray(); |
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#endif |
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|
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|
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TInt ret = KErrNone; |
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|
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// Create the ACM class instances. |
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for ( TUint ii = 0 ; ii < aNoAcms ; ii++ ) |
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{ |
43 | 313 |
LOGTEXT2(_L8("\tabout to create ACM instance %d"), ii); |
0
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TRAP(ret, CreateFunctionL(aProtocolNum, aAcmControlIfcName, aAcmDataIfcName)); |
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if ( ret != KErrNone ) |
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{ |
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// Destroy the most recent ACMs that _did_ get created. |
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DestroyFunctions(ii); |
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break; |
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} |
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} |
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|
322 |
|
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// all the ACM Functions should now have been created. publish the data |
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PublishAcmConfig(); |
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|
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|
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|
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#ifdef _DEBUG |
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|
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CheckAcmArray(); |
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LogPortsAndFunctions(); |
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#endif |
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|
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|
43 | 331 |
LOGTEXT2(_L8("<<CAcmPortFactory::CreateFunctions ret = %d"), ret); |
0
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return ret; |
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333 |
} |
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|
334 |
|
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void CAcmPortFactory::CreateFunctionL(const TUint8 aProtocolNum, const TDesC16& aAcmControlIfcName, const TDesC16& aAcmDataIfcName) |
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/** |
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|
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* Creates a single ACM function, appending it to the iAcmClassArray array. |
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|
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*/ |
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|
339 |
{ |
43 | 340 |
LOG_FUNC |
341 |
||
342 |
LOGTEXT3(_L8("\tiAcmPortArray.Count() = %d, iAcmClassArray.Count() = %d"), |
|
343 |
iAcmPortArray.Count(), iAcmClassArray.Count()); |
|
344 |
||
345 |
LOGTEXT4(_L("\taProtocolNum = %d, Control Ifc Name = %S, Data Ifc Name = %S"), |
|
346 |
aProtocolNum, &aAcmControlIfcName, &aAcmDataIfcName); |
|
0
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347 |
|
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|
348 |
CCdcAcmClass* acm = CCdcAcmClass::NewL(aProtocolNum, aAcmControlIfcName, aAcmDataIfcName); |
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349 |
CleanupStack::PushL(acm); |
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350 |
|
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|
351 |
// If there isn't already a slot in the ACM port array corresponding to |
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352 |
// this ACM interface instance, create one. |
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353 |
if ( iAcmPortArray.Count() < iAcmClassArray.Count() + 1 ) |
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354 |
{ |
43 | 355 |
LOGTEXT(_L8("\tappending a slot to the ACM port array")); |
356 |
LEAVEIFERRORL(iAcmPortArray.Append(NULL)); |
|
0
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357 |
} |
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|
358 |
|
43 | 359 |
LEAVEIFERRORL(iAcmClassArray.Append(acm)); |
0
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|
360 |
CleanupStack::Pop(acm); |
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|
361 |
|
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362 |
// If there's an ACM port at the relevant index (held open from when USB |
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363 |
// was previously Started, perhaps) then tell it about its new ACM |
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364 |
// interface. |
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365 |
if ( iAcmPortArray[iAcmClassArray.Count() - 1] ) |
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|
366 |
{ |
43 | 367 |
LOGTEXT3(_L8("\tinforming CAcmPort instance %d of acm 0x%08x"), iAcmClassArray.Count() - 1, acm); |
0
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368 |
iAcmPortArray[iAcmClassArray.Count() - 1]->SetAcm(acm); |
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369 |
} |
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370 |
|
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|
371 |
// update the TPublishedAcmConfig with the current details |
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372 |
iConfigBuf().iAcmConfig[iConfigBuf().iAcmCount].iProtocol = aProtocolNum; |
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|
373 |
iConfigBuf().iAcmCount++; |
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|
374 |
//don't update the p&s data here, do it in CreateFunctions after the construction of |
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375 |
//all the requested functions |
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|
376 |
} |
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377 |
|
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|
378 |
void CAcmPortFactory::Info(TSerialInfo& aSerialInfo) |
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|
379 |
/** |
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380 |
* Get info about this CSY, fill in the supplied structure. |
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|
381 |
* |
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382 |
* @param aSerialInfo where info will be written to |
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383 |
*/ |
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384 |
{ |
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385 |
// NB Our TSerialInfo does not advertise the existence of the registration |
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|
386 |
// port. |
43 | 387 |
LOG_FUNC |
388 |
||
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389 |
_LIT(KSerialDescription, "USB Serial Port Emulation via ACM"); |
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|
390 |
aSerialInfo.iDescription = KSerialDescription; |
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|
391 |
aSerialInfo.iName = KAcmSerialName; |
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|
392 |
aSerialInfo.iLowUnit = KAcmLowUnit; |
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|
393 |
aSerialInfo.iHighUnit = (iAcmPortArray.Count()==0) ? 0 : (iAcmPortArray.Count()-1); |
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|
394 |
// See comments in AcmInterface.h |
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|
395 |
} |
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|
396 |
|
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|
397 |
void CAcmPortFactory::LogPortsAndFunctions() |
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|
398 |
/** |
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|
399 |
* Utility to log in a tabular form all the ACM function instances and any |
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|
400 |
* associated ports. |
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|
401 |
* The number of ACM functions listed is the number we have been asked to |
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|
402 |
* make which we have made successfully. All the ACM |
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Revision: 201001
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|
403 |
* functions listed should be pointing somewhere (enforced by CheckAcmArray). |
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|
404 |
* Any or all of the ACM ports may be NULL, indicating simply that the client |
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Revision: 201001
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|
405 |
* side hasn't opened an RComm on that ACM port yet. |
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|
406 |
* It may also be the case that there are more ACM port slots than there are |
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Revision: 201001
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|
407 |
* ACM functions slots. This just means that USB is in a more 'Stopped' state |
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|
408 |
* than it has been in the past- the ports in these slots may still be open, |
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Revision: 201001
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|
409 |
* so the ACM port array must retain slots for them. |
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|
410 |
* All this is just so the logging gives a clear picture of the functions and |
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Revision: 201001
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|
411 |
* port open/closed history of the CSY. |
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Revision: 201001
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|
412 |
*/ |
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Revision: 201001
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|
413 |
{ |
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Revision: 201001
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|
414 |
TUint ii; |
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Revision: 201001
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|
415 |
|
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Revision: 201001
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|
416 |
// Log ACM functions and corresponding ports. |
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Revision: 201001
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|
417 |
for ( ii = 0 ; ii < static_cast<TUint>( iAcmClassArray.Count()) ; ii++ ) |
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diff
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|
418 |
{ |
43 | 419 |
LOGTEXT5(_L8("\t iAcmClassArray[%d] = 0x%08x, iAcmPortArray[%d] = 0x%08x"), ii, iAcmClassArray[ii], ii, iAcmPortArray[ii]); |
0
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Revision: 201001
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diff
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|
420 |
} |
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Revision: 201001
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|
421 |
// Log any ports extending beyond where we currently have ACM interfaces. |
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Revision: 201001
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|
422 |
for ( ; ii < static_cast<TUint>(iAcmPortArray.Count()) ; ii++ ) |
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Revision: 201001
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diff
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|
423 |
{ |
43 | 424 |
LOGTEXT4(_L8("\t iAcmClassArray[%d] = <no slot>, iAcmPortArray[%d] = 0x%08x"), ii, ii, iAcmPortArray[ii]); |
0
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Revision: 201001
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diff
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|
425 |
} |
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Revision: 201001
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parents:
diff
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|
426 |
} |
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Revision: 201001
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|
427 |
|
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Revision: 201001
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|
428 |
// |
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Revision: 201001
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|
429 |
// End of file |