author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 17 Dec 2009 09:24:54 +0200 | |
changeset 9 | 96e5fb8b040d |
child 10 | 36bfc973b146 |
permissions | -rw-r--r-- |
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// Copyright (c) 2008-2009 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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// |
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/** |
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@file |
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@internalTechnology |
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*/ |
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#include <e32base.h> |
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#include <e32base_private.h> |
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#include "msdebug.h" |
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#include "debug.h" |
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#include "msctypes.h" |
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#include "mtransport.h" |
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#include "mprotocol.h" |
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#include "tscsiclientreq.h" |
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#include "tblocktransfer.h" |
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#include "mscutils.h" |
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#include "usbmshostpanic.h" |
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#include "tscsiblockcmds.h" |
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#include "tsbcclientinterface.h" |
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/** |
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Constructor. |
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@param aTransport The Transport interface to be used |
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*/ |
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TSbcClientInterface::TSbcClientInterface(MTransport& aTransport) |
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: iTransport(aTransport) |
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{ |
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__MSFNLOG |
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} |
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TSbcClientInterface::~TSbcClientInterface() |
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{ |
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__MSFNLOG |
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} |
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/** |
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Constructor to create and send SCSI MODE SENSE (6) request to obtain the |
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medium's Write Protect status. The function leaves if the device response is not |
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compliant with the protocol standard. |
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|
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@param aPageCode The SCSI PAGE CODE value |
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@param aWriteProtected The SCSI WP value |
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@return TInt KErrNone if successful, KErrCommandFailed to indicate a |
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device status error, KErrCommandStalled to indicate device stall |
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*/ |
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TInt TSbcClientInterface::ModeSense6L(TUint aPageCode, TBool& aWriteProtected) |
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{ |
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__MSFNLOG |
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TScsiClientModeSense6Req modeSense6Req(TScsiClientModeSense6Req::ECurrentValues, |
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aPageCode); |
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TScsiClientModeSense6Resp modeSense6Resp; |
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TInt err = iTransport.SendControlCmdL(&modeSense6Req, &modeSense6Resp); |
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if (!err) |
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{ |
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__SCSIPRINT1(_L("SCSI MODE SENSE (6) INFO WrProtect=%d"), |
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modeSense6Resp.iWriteProtected); |
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aWriteProtected = modeSense6Resp.iWriteProtected; |
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} |
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else |
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{ |
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aWriteProtected = EFalse; |
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} |
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return err; |
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} |
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|
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|
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/** |
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Create and send SCSI MODE SENSE (10) request to obtain the mediums Write Protect |
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status. The function leaves if the device response is not compliant with the |
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protocol standard. |
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|
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@param aPageCode The SCSI PAGE CODE value |
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@param aWriteProtected The SCSI WP value |
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|
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@return TInt KErrNone if successful, KErrCommandFailed to indicate a |
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device status error, KErrCommandStalled to indicate a device stall |
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*/ |
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TInt TSbcClientInterface::ModeSense10L(TUint aPageCode, TBool& aWriteProtected) |
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{ |
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__MSFNLOG |
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TScsiClientModeSense10Req modeSense10Req(TScsiClientModeSense10Req::ECurrentValues, |
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aPageCode); |
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TScsiClientModeSense10Resp modeSense10Resp; |
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TInt err = iTransport.SendControlCmdL(&modeSense10Req, &modeSense10Resp); |
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105 |
|
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if (!err) |
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107 |
{ |
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__SCSIPRINT1(_L("SCSI MODE SENSE (10) INFO WrProtect=%d"), |
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modeSense10Resp.iWriteProtected); |
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aWriteProtected = modeSense10Resp.iWriteProtected; |
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} |
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else |
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113 |
{ |
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aWriteProtected = EFalse; |
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} |
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return err; |
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} |
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118 |
|
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119 |
|
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/** |
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Constructor to create SCSI MODE SENSE (10) request. |
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122 |
|
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@param aPageControl The SCSI PAGE CODE value |
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@param aPageCode The SCSI WP value |
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@param aSubPageCode The SCSI SUB PAGE CODE value |
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*/ |
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TScsiClientModeSense10Req::TScsiClientModeSense10Req(TPageControl aPageControl, |
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TUint aPageCode, |
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TUint aSubPageCode) |
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130 |
: |
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TScsiClientReq(EModeSense10), |
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iPageControl(aPageControl), |
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iPageCode(aPageCode), |
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iSubPageCode(aSubPageCode), |
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iAllocationLength(KResponseLength) |
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136 |
{ |
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137 |
__MSFNLOG |
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138 |
} |
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139 |
|
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140 |
|
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TInt TScsiClientModeSense10Req::EncodeRequestL(TDes8& aBuffer) const |
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142 |
{ |
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143 |
__MSFNSLOG |
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__SCSIPRINT(_L("<-- SCSI MODE SENSE (10)")); |
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TInt length = TScsiClientReq::EncodeRequestL(aBuffer); |
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146 |
|
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147 |
// PC |
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aBuffer[2] = iPageCode; |
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aBuffer[2] |= iPageControl << 6; |
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aBuffer[3] = iSubPageCode; |
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151 |
|
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BigEndian::Put16(&aBuffer[7], iAllocationLength); |
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return length; |
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} |
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155 |
|
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156 |
/** |
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157 |
Create READ (10) request and send to the transport layer. This performs a |
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logical block read of the device server. The received data is appended into the |
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copy buffer. The function leaves if the device response is not compliant with |
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the protocol standard. |
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Note that TBlockTransfer must be initialised beforehand. |
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162 |
|
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@param aLba The Logical Block address to read from |
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@param aBuffer The buffer to copy data to |
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@param aLen The number of bytes to be read (IN) and returns the number of bytes |
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actually read (OUT) |
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167 |
|
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@return TInt KErrNone if successful otherwise KErrCommandFailed to indicate a |
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169 |
device status error or KErrArgument to indicate that aLen is too large for the |
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protocol. |
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171 |
*/ |
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TInt TSbcClientInterface::Read10L(TLba aLba, TDes8& aBuffer, TInt& aLen) |
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173 |
{ |
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174 |
__MSFNLOG |
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__ASSERT_DEBUG(iBlockTransfer.BlockLength(), User::Panic(KUsbMsHostPanicCat, EBlockLengthNotSet)); |
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__ASSERT_DEBUG(aLen % iBlockTransfer.BlockLength() == 0, User::Panic(KUsbMsHostPanicCat, EBlockDevice)); |
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177 |
|
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TScsiClientRead10Req read10Req; |
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179 |
|
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read10Req.iLogicalBlockAddress = aLba; |
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181 |
|
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TInt blockTransferLength = aLen / iBlockTransfer.BlockLength(); |
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if (blockTransferLength > static_cast<TInt>(KMaxTUint16)) |
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184 |
{ |
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User::Leave(KErrArgument); |
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186 |
} |
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read10Req.iBlockTransferLength = static_cast<TUint16>(blockTransferLength); |
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188 |
TInt err = iTransport.SendDataRxCmdL(&read10Req, aBuffer, aLen); |
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189 |
return err; |
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190 |
} |
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191 |
|
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192 |
/** |
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193 |
Create READ CAPACITY (10) request and send to the transport layer. The request |
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194 |
returns the device servers capacity information. The device server's response |
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195 |
values are also used here to initialise the TBlockTransfer values. The function |
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leaves if the device response is not compliant with the protocol standard. |
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197 |
|
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@param aLba The Logical Block Address returned by the LU |
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@param aBlockSize The Block Size returned by the LU |
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200 |
|
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201 |
@return TInt KErrNone if successful, KErrCommandFailed to indicate a |
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202 |
device status error, KErrCommandStalled to indicate a device stall |
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203 |
*/ |
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204 |
TInt TSbcClientInterface::ReadCapacity10L(TLba& aLba, TUint32& aBlockSize) |
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205 |
{ |
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__MSFNLOG |
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TScsiClientReadCapacity10Req capacity10Req; |
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TScsiClientReadCapacity10Resp capacity10Resp; |
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|
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TInt err = iTransport.SendControlCmdL(&capacity10Req, &capacity10Resp); |
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if (!err) |
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{ |
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aLba = capacity10Resp.iLba; |
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aBlockSize = capacity10Resp.iBlockSize; |
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|
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__SCSIPRINT2(_L("Capacity LBA=0x%08x SIZE=0x%08x"), |
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aLba, aBlockSize); |
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|
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iBlockTransfer.SetCapacityL(aBlockSize, aLba); |
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} |
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return err; |
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} |
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|
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|
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/** |
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Create START STOP UNIT request. The function leaves if the device response is |
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not compliant with the protocol standard. |
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|
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@param aStart SCSI START value |
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|
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@return TInt KErrNone if successful otherwise KErrCommandFailed to indicate a |
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device status error |
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*/ |
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TInt TSbcClientInterface::StartStopUnitL(TBool aStart) |
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{ |
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__MSFNLOG |
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TScsiClientStartStopUnitReq startStopUnitReq; |
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|
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startStopUnitReq.iImmed = ETrue; |
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startStopUnitReq.iLoej = EFalse; |
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startStopUnitReq.iStart = aStart; |
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|
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TInt err = iTransport.SendControlCmdL(&startStopUnitReq); |
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|
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return err; |
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} |
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|
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|
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/** |
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Create WRITE (10) request and send to the transport layer. This performs a |
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logical block write of the device server. Note that TBlockTransfer must be |
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initialised beforehand. The function leaves if the device response is not |
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compliant with the protocol standard. |
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|
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@param aLba Logical Block Address to write the data to |
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@param aBuffer Buffer containing the data |
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@param aPos Offset into the buffer to the data |
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@param aLen The number of bytes to be written (IN) and returns the bytes |
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actually transferred (OUT) |
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|
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@return TInt KErrNone if successful otherwise KErrCommandFailed to indicate a |
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device status error or KErrArgument to indicate that aLen is too large for the |
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protocol. |
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*/ |
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TInt TSbcClientInterface::Write10L(TLba aLba, TDesC8& aBuffer, TUint aPos, TInt& aLen) |
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{ |
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__MSFNLOG |
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__ASSERT_DEBUG(iBlockTransfer.BlockLength(), User::Panic(KUsbMsHostPanicCat, EBlockLengthNotSet)); |
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__ASSERT_DEBUG(aLen % iBlockTransfer.BlockLength() == 0, User::Panic(KUsbMsHostPanicCat, EBlockDevice)); |
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|
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// check that buffer size is large enough |
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if (aBuffer.Length() < (aPos + aLen)) |
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{ |
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User::Leave(KErrArgument); |
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} |
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|
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TScsiClientWrite10Req write10Req; |
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write10Req.iLogicalBlockAddress = aLba; |
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|
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TInt blockTransferLength = aLen / iBlockTransfer.BlockLength(); |
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if (blockTransferLength > static_cast<TInt>(KMaxTUint16)) |
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{ |
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User::Leave(KErrArgument); |
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} |
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write10Req.iBlockTransferLength = static_cast<TUint16>(blockTransferLength); |
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|
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TInt err = iTransport.SendDataTxCmdL(&write10Req, aBuffer, aPos, aLen); |
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return err; |
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} |
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290 |