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1 // Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of the License "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // Provides utilities to build SCSI commands |
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15 // |
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16 // |
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17 |
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18 /** |
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19 @file |
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20 @internalTechnology |
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21 */ |
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22 |
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23 #ifndef __SCSICMDBUILDER_H__ |
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24 #define __SCSICMDBUILDER_H__ |
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25 |
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26 #include <e32std.h> |
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27 #include <f32file.h> |
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28 |
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29 const TInt KScsiCmdMaxLen = 10; |
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30 const TInt KCbwLength = 31; |
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31 const TInt KCswLength = 13; |
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32 const TInt KKiloBytes = 1024; |
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33 |
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34 GLREF_D TBuf8<KScsiCmdMaxLen> scsiCmdBuf; |
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35 |
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36 /** |
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37 builds read/write SCSI command |
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38 */ |
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39 GLREF_C void BuildReadWrite(TInt aFlag, TInt aLogicalBlkAddr, TInt aTotalBlks); |
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40 |
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41 /** |
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42 Builds prevent/allow medium removal SCSI command |
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43 |
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44 @param aFlag: indicating if the command is to allow or prevent medium removal |
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45 */ |
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46 GLREF_C void BuildMediumRemoval(TInt aFlag); |
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47 |
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48 /** |
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49 Builds a test unit ready SCSI command |
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50 */ |
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51 GLREF_C void BuildTestUnitReady(); |
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52 |
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53 /** |
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54 Builds a start/stop unit command |
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55 |
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56 @param aFlag: indicating if the command is to start or stop unit |
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57 */ |
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58 GLREF_C void BuildStartStopUnit(TInt aFlag); |
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59 |
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60 /** |
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61 Copy an int. Little endian |
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62 |
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63 @param dest the destination |
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64 @param source the source |
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65 */ |
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66 GLREF_C void fillInt(TUint8* dest, TInt source); |
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67 |
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68 /** |
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69 Extracts an integer from a buffer. Assume little endian |
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70 */ |
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71 GLREF_C TInt extractInt(const TUint8* aBuf); |
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72 |
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73 /** |
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74 Builds a CBW message |
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75 |
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76 @param aCbw: stores CBW |
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77 @param aDCBWTag: a command block tag sent by the host. Used to associates a CSW |
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78 with corresponding CBW |
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79 @param aDataTranferLen: the number of bytes the host expects to transfer |
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80 @param aInOutFlag: value for bmCBWFlags field, indicating the direction of transfer |
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81 @param aCBWCB: the actual command to be wrapped |
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82 @param aTestLun: local unit number |
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83 */ |
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84 GLREF_C void createCBW(TDes8& aCbw, TInt aDCBWTag, TInt aDataTransferLen, TUint8 aInOutFlag, TDes8& aCBWCB, TUint8 aTestLun); |
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85 |
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86 #endif // __SCSICMDBUILDER_H__ |
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87 |