mingw-5.1.4/win32/include/ddk/scsi.h
changeset 0 76b1f169d9fe
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mingw-5.1.4/win32/include/ddk/scsi.h	Fri Apr 03 17:16:45 2009 +0100
@@ -0,0 +1,1694 @@
+/*
+ * scsi.h
+ *
+ * SCSI port and class interface.
+ *
+ * This file is part of the w32api package.
+ *
+ * Contributors:
+ *   Created by Casper S. Hornstrup <chorns@users.sourceforge.net>
+ *
+ * THIS SOFTWARE IS NOT COPYRIGHTED
+ *
+ * This source code is offered for use in the public domain. You may
+ * use, modify or distribute it freely.
+ *
+ * This code is distributed in the hope that it will be useful but
+ * WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
+ * DISCLAIMED. This includes but is not limited to warranties of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ */
+
+#ifndef __SCSI_H
+#define __SCSI_H
+
+#if __GNUC__ >=3
+#pragma GCC system_header
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "ntddk.h"
+
+typedef union _CDB {
+  struct _CDB6GENERIC {
+    UCHAR  OperationCode;
+    UCHAR  Immediate : 1;
+    UCHAR  CommandUniqueBits : 4;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  CommandUniqueBytes[3];
+    UCHAR  Link : 1;
+    UCHAR  Flag : 1;
+    UCHAR  Reserved : 4;
+    UCHAR  VendorUnique : 2;
+  } CDB6GENERIC, *PCDB6GENERIC;
+  
+  struct _CDB6READWRITE {
+    UCHAR  OperationCode;
+    UCHAR  LogicalBlockMsb1 : 5;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  LogicalBlockMsb0;
+    UCHAR  LogicalBlockLsb;
+    UCHAR  TransferBlocks;
+    UCHAR  Control;
+  } CDB6READWRITE, *PCDB6READWRITE;
+  
+  struct _CDB6INQUIRY {
+    UCHAR  OperationCode;
+    UCHAR  Reserved1 : 5;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  PageCode;
+    UCHAR  IReserved;
+    UCHAR  AllocationLength;
+    UCHAR  Control;
+  } CDB6INQUIRY, *PCDB6INQUIRY;
+  
+  struct _CDB6INQUIRY3 {
+    UCHAR  OperationCode;
+    UCHAR  EnableVitalProductData : 1;
+    UCHAR  CommandSupportData : 1;
+    UCHAR  Reserved1 : 6;
+    UCHAR  PageCode;
+    UCHAR  Reserved2;
+    UCHAR  AllocationLength;
+    UCHAR  Control;
+  } CDB6INQUIRY3, *PCDB6INQUIRY3;
+  
+  struct _CDB6VERIFY {
+    UCHAR  OperationCode;
+    UCHAR  Fixed : 1;
+    UCHAR  ByteCompare : 1;
+    UCHAR  Immediate : 1;
+    UCHAR  Reserved : 2;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  VerificationLength[3];
+    UCHAR  Control;
+  } CDB6VERIFY, *PCDB6VERIFY;
+  
+  struct _CDB6FORMAT {
+    UCHAR  OperationCode;
+    UCHAR  FormatControl : 5;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  FReserved1;
+    UCHAR  InterleaveMsb;
+    UCHAR  InterleaveLsb;
+    UCHAR  FReserved2;
+  } CDB6FORMAT, *PCDB6FORMAT;
+  
+  struct _CDB10 {
+    UCHAR  OperationCode;
+    UCHAR  RelativeAddress : 1;
+    UCHAR  Reserved1 : 2;
+    UCHAR  ForceUnitAccess : 1;
+    UCHAR  DisablePageOut : 1;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  LogicalBlockByte0;
+    UCHAR  LogicalBlockByte1;
+    UCHAR  LogicalBlockByte2;
+    UCHAR  LogicalBlockByte3;
+    UCHAR  Reserved2;
+    UCHAR  TransferBlocksMsb;
+    UCHAR  TransferBlocksLsb;
+    UCHAR  Control;
+  } CDB10, *PCDB10;
+  
+  struct _CDB12 {
+    UCHAR  OperationCode;
+    UCHAR  RelativeAddress : 1;
+    UCHAR  Reserved1 : 2;
+    UCHAR  ForceUnitAccess : 1;
+    UCHAR  DisablePageOut : 1;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  LogicalBlock[4];
+    UCHAR  TransferLength[4];
+    UCHAR  Reserved2;
+    UCHAR  Control;
+  } CDB12, *PCDB12;
+  
+  struct _PAUSE_RESUME {
+    UCHAR  OperationCode;
+    UCHAR  Reserved1 : 5;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  Reserved2[6];
+    UCHAR  Action;
+    UCHAR  Control;
+  } PAUSE_RESUME, *PPAUSE_RESUME;
+  
+  struct _READ_TOC {
+    UCHAR  OperationCode;
+    UCHAR  Reserved0 : 1;
+    UCHAR  Msf : 1;
+    UCHAR  Reserved1 : 3;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  Format2 : 4;
+    UCHAR  Reserved2 : 4;
+    UCHAR  Reserved3[3];
+    UCHAR  StartingTrack;
+    UCHAR  AllocationLength[2];
+    UCHAR  Control : 6;
+    UCHAR  Format : 2;
+  } READ_TOC, *PREAD_TOC;
+  
+  struct _READ_DISK_INFORMATION {
+    UCHAR  OperationCode;
+    UCHAR  Reserved1 : 5;
+    UCHAR  Lun : 3;
+    UCHAR  Reserved2[5];
+    UCHAR  AllocationLength[2];
+    UCHAR  Control;
+  } READ_DISK_INFORMATION, *PREAD_DISK_INFORMATION;
+  
+  struct _READ_TRACK_INFORMATION {
+    UCHAR  OperationCode;
+    UCHAR  Track : 1;
+    UCHAR  Reserved1 : 3;
+    UCHAR  Reserved2 : 1;
+    UCHAR  Lun : 3;
+    UCHAR  BlockAddress[4];
+    UCHAR  Reserved3;
+    UCHAR  AllocationLength[2];
+    UCHAR  Control;
+  } READ_TRACK_INFORMATION, *PREAD_TRACK_INFORMATION;
+  
+  struct _RESERVE_TRACK_RZONE {
+    UCHAR  OperationCode;
+    UCHAR  Reserved1[4];
+    UCHAR  ReservationSize[4];
+    UCHAR  Control;
+  } RESERVE_TRACK_RZONE, *PRESERVE_TRACK_RZONE;
+  
+  struct _SEND_OPC_INFORMATION {
+    UCHAR  OperationCode;
+    UCHAR  DoOpc    : 1;
+    UCHAR  Reserved : 7;
+    UCHAR  Reserved1[5];
+    UCHAR  ParameterListLength[2];
+    UCHAR  Reserved2;
+  } SEND_OPC_INFORMATION, *PSEND_OPC_INFORMATION;
+  
+  struct _CLOSE_TRACK {
+    UCHAR  OperationCode;
+    UCHAR  Immediate : 1;
+    UCHAR  Reserved1 : 7;
+    UCHAR  Track     : 1;
+    UCHAR  Session   : 1;
+    UCHAR  Reserved2 : 6;
+    UCHAR  Reserved3;
+    UCHAR  TrackNumber[2];
+    UCHAR  Reserved4[3];
+    UCHAR  Control;
+  } CLOSE_TRACK, *PCLOSE_TRACK;
+  
+  struct _SEND_CUE_SHEET {
+    UCHAR  OperationCode;
+    UCHAR  Reserved[5];
+    UCHAR  CueSheetSize[3];
+    UCHAR  Control;
+  } SEND_CUE_SHEET, *PSEND_CUE_SHEET;
+  
+  struct _READ_HEADER {
+    UCHAR  OperationCode;
+    UCHAR  Reserved1 : 1;
+    UCHAR  Msf : 1;
+    UCHAR  Reserved2 : 3;
+    UCHAR  Lun : 3;
+    UCHAR  LogicalBlockAddress[4];
+    UCHAR  Reserved3;
+    UCHAR  AllocationLength[2];
+    UCHAR  Control;
+  } READ_HEADER, *PREAD_HEADER;
+  
+  struct _PLAY_AUDIO {
+    UCHAR  OperationCode;
+    UCHAR  Reserved1 : 5;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  StartingBlockAddress[4];
+    UCHAR  Reserved2;
+    UCHAR  PlayLength[2];
+    UCHAR  Control;
+  } PLAY_AUDIO, *PPLAY_AUDIO;
+  
+  struct _PLAY_AUDIO_MSF { 
+    UCHAR  OperationCode;
+    UCHAR  Reserved1 : 5;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  Reserved2;
+    UCHAR  StartingM;
+    UCHAR  StartingS;
+    UCHAR  StartingF;
+    UCHAR  EndingM;
+    UCHAR  EndingS;
+    UCHAR  EndingF;
+    UCHAR  Control;
+  } PLAY_AUDIO_MSF, *PPLAY_AUDIO_MSF;
+  
+/* FIXME: Should the union be anonymous in C++ too?  If so,
+   can't define named types _LBA and _MSF within anonymous union
+   for C++. */ 	
+  struct _PLAY_CD {
+    UCHAR  OperationCode;
+    UCHAR  Reserved1 : 1;
+    UCHAR  CMSF : 1;
+    UCHAR  ExpectedSectorType : 3;
+    UCHAR  Lun : 3;
+#ifndef __cplusplus
+  _ANONYMOUS_UNION
+#endif
+  union {
+      struct _LBA {
+            UCHAR  StartingBlockAddress[4];
+            UCHAR  PlayLength[4];
+      } LBA;
+  
+      struct _MSF {
+            UCHAR  Reserved1;
+            UCHAR  StartingM;
+            UCHAR  StartingS;
+            UCHAR  StartingF;
+            UCHAR  EndingM;
+            UCHAR  EndingS;
+            UCHAR  EndingF;
+            UCHAR  Reserved2;
+      } MSF;
+  #ifndef __cplusplus
+  }DUMMYUNIONNAME;
+  #else
+  }u;
+  #endif
+  
+    UCHAR  Audio : 1;
+    UCHAR  Composite : 1;
+    UCHAR  Port1 : 1;
+    UCHAR  Port2 : 1;
+    UCHAR  Reserved2 : 3;
+    UCHAR  Speed : 1;
+    UCHAR  Control;
+  } PLAY_CD, *PPLAY_CD;
+  
+  struct _SCAN_CD {
+    UCHAR  OperationCode;
+    UCHAR  RelativeAddress : 1;
+    UCHAR  Reserved1 : 3;
+    UCHAR  Direct : 1;
+    UCHAR  Lun : 3;
+    UCHAR  StartingAddress[4];
+    UCHAR  Reserved2[3];
+    UCHAR  Reserved3 : 6;
+    UCHAR  Type : 2;
+    UCHAR  Reserved4;
+    UCHAR  Control;
+  } SCAN_CD, *PSCAN_CD;
+  
+  struct _STOP_PLAY_SCAN {
+    UCHAR  OperationCode;
+    UCHAR  Reserved1 : 5;
+    UCHAR  Lun : 3;
+    UCHAR  Reserved2[7];
+    UCHAR  Control;
+  } STOP_PLAY_SCAN, *PSTOP_PLAY_SCAN;
+  
+  struct _SUBCHANNEL {
+    UCHAR  OperationCode;
+    UCHAR  Reserved0 : 1;
+    UCHAR  Msf : 1;
+    UCHAR  Reserved1 : 3;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  Reserved2 : 6;
+    UCHAR  SubQ : 1;
+    UCHAR  Reserved3 : 1;
+    UCHAR  Format;
+    UCHAR  Reserved4[2];
+    UCHAR  TrackNumber;
+    UCHAR  AllocationLength[2];
+    UCHAR  Control;
+  } SUBCHANNEL, *PSUBCHANNEL;
+  
+  struct _READ_CD { 
+    UCHAR  OperationCode;
+    UCHAR  RelativeAddress : 1;
+    UCHAR  Reserved0 : 1;
+    UCHAR  ExpectedSectorType : 3;
+    UCHAR  Lun : 3;
+    UCHAR  StartingLBA[4];
+    UCHAR  TransferBlocks[3];
+    UCHAR  Reserved2 : 1;
+    UCHAR  ErrorFlags : 2;
+    UCHAR  IncludeEDC : 1;
+    UCHAR  IncludeUserData : 1;
+    UCHAR  HeaderCode : 2;
+    UCHAR  IncludeSyncData : 1;
+    UCHAR  SubChannelSelection : 3;
+    UCHAR  Reserved3 : 5;
+    UCHAR  Control;
+  } READ_CD, *PREAD_CD;
+  
+  struct _READ_CD_MSF {
+    UCHAR  OperationCode;
+    UCHAR  RelativeAddress : 1;
+    UCHAR  Reserved1 : 1;
+    UCHAR  ExpectedSectorType : 3;
+    UCHAR  Lun : 3;
+    UCHAR  Reserved2;
+    UCHAR  StartingM;
+    UCHAR  StartingS;
+    UCHAR  StartingF;
+    UCHAR  EndingM;
+    UCHAR  EndingS;
+    UCHAR  EndingF;
+    UCHAR  Reserved3;
+    UCHAR  Reserved4 : 1;
+    UCHAR  ErrorFlags : 2;
+    UCHAR  IncludeEDC : 1;
+    UCHAR  IncludeUserData : 1;
+    UCHAR  HeaderCode : 2;
+    UCHAR  IncludeSyncData : 1;
+    UCHAR  SubChannelSelection : 3;
+    UCHAR  Reserved5 : 5;
+    UCHAR  Control;
+  } READ_CD_MSF, *PREAD_CD_MSF;
+  
+  struct _PLXTR_READ_CDDA {
+    UCHAR  OperationCode;
+    UCHAR  Reserved0 : 5;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  LogicalBlockByte0;
+    UCHAR  LogicalBlockByte1;
+    UCHAR  LogicalBlockByte2;
+    UCHAR  LogicalBlockByte3;
+    UCHAR  TransferBlockByte0;
+    UCHAR  TransferBlockByte1;
+    UCHAR  TransferBlockByte2;
+    UCHAR  TransferBlockByte3;
+    UCHAR  SubCode;
+    UCHAR  Control;
+  } PLXTR_READ_CDDA, *PPLXTR_READ_CDDA;
+  
+  struct _NEC_READ_CDDA {
+    UCHAR  OperationCode;
+    UCHAR  Reserved0;
+    UCHAR  LogicalBlockByte0;
+    UCHAR  LogicalBlockByte1;
+    UCHAR  LogicalBlockByte2;
+    UCHAR  LogicalBlockByte3;
+    UCHAR  Reserved1;
+    UCHAR  TransferBlockByte0;
+    UCHAR  TransferBlockByte1;
+    UCHAR  Control;
+  } NEC_READ_CDDA, *PNEC_READ_CDDA;
+  
+  struct _MODE_SENSE {
+    UCHAR  OperationCode;
+    UCHAR  Reserved1 : 3;
+    UCHAR  Dbd : 1;
+    UCHAR  Reserved2 : 1;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  PageCode : 6;
+    UCHAR  Pc : 2;
+    UCHAR  Reserved3;
+    UCHAR  AllocationLength;
+    UCHAR  Control;
+  } MODE_SENSE, *PMODE_SENSE;
+  
+  struct _MODE_SENSE10 {
+    UCHAR  OperationCode;
+    UCHAR  Reserved1 : 3;
+    UCHAR  Dbd : 1;
+    UCHAR  Reserved2 : 1;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  PageCode : 6;
+    UCHAR  Pc : 2;
+    UCHAR  Reserved3[4];
+    UCHAR  AllocationLength[2];
+    UCHAR  Control;
+  } MODE_SENSE10, *PMODE_SENSE10;
+  
+  struct _MODE_SELECT {
+    UCHAR  OperationCode;
+    UCHAR  SPBit : 1;
+    UCHAR  Reserved1 : 3;
+    UCHAR  PFBit : 1;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  Reserved2[2];
+    UCHAR  ParameterListLength;
+    UCHAR  Control;
+  } MODE_SELECT, *PMODE_SELECT;
+  
+  struct _MODE_SELECT10 {
+    UCHAR  OperationCode;
+    UCHAR  SPBit : 1;
+    UCHAR  Reserved1 : 3;
+    UCHAR  PFBit : 1;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  Reserved2[5];
+    UCHAR  ParameterListLength[2];
+    UCHAR  Control;
+  } MODE_SELECT10, *PMODE_SELECT10;
+  
+  struct _LOCATE {
+    UCHAR  OperationCode;
+    UCHAR  Immediate : 1;
+    UCHAR  CPBit : 1;
+    UCHAR  BTBit : 1;
+    UCHAR  Reserved1 : 2;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  Reserved3;
+    UCHAR  LogicalBlockAddress[4];
+    UCHAR  Reserved4;
+    UCHAR  Partition;
+    UCHAR  Control;
+  } LOCATE, *PLOCATE;
+  
+  struct _LOGSENSE {
+    UCHAR  OperationCode;
+    UCHAR  SPBit : 1;
+    UCHAR  PPCBit : 1;
+    UCHAR  Reserved1 : 3;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  PageCode : 6;
+    UCHAR  PCBit : 2;
+    UCHAR  Reserved2;
+    UCHAR  Reserved3;
+    UCHAR  ParameterPointer[2];
+    UCHAR  AllocationLength[2];
+    UCHAR  Control;
+  } LOGSENSE, *PLOGSENSE;
+  
+  struct _LOGSELECT {
+    UCHAR  OperationCode;
+    UCHAR  SPBit : 1;
+    UCHAR  PCRBit : 1;
+    UCHAR  Reserved1 : 3;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  Reserved : 6;
+    UCHAR  PCBit : 2;
+    UCHAR  Reserved2[4];
+    UCHAR  ParameterListLength[2];
+    UCHAR  Control;
+  } LOGSELECT, *PLOGSELECT;
+  
+  struct _PRINT {
+    UCHAR  OperationCode;
+    UCHAR  Reserved : 5;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  TransferLength[3];
+    UCHAR  Control;
+  } PRINT, *PPRINT;
+  
+  struct _SEEK {
+    UCHAR  OperationCode;
+    UCHAR  Reserved1 : 5;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  LogicalBlockAddress[4];
+    UCHAR  Reserved2[3];
+    UCHAR  Control;
+  } SEEK, *PSEEK;
+  
+  struct _ERASE {
+    UCHAR  OperationCode;
+    UCHAR  Long : 1;
+    UCHAR  Immediate : 1;
+    UCHAR  Reserved1 : 3;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  Reserved2[3];
+    UCHAR  Control;
+  } ERASE, *PERASE;
+  
+  struct _START_STOP {
+    UCHAR  OperationCode;
+    UCHAR  Immediate: 1;
+    UCHAR  Reserved1 : 4;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  Reserved2[2];
+    UCHAR  Start : 1;
+    UCHAR  LoadEject : 1;
+    UCHAR  Reserved3 : 6;
+    UCHAR  Control;
+  } START_STOP, *PSTART_STOP;
+  
+  struct _MEDIA_REMOVAL {
+    UCHAR  OperationCode;
+    UCHAR  Reserved1 : 5;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  Reserved2[2];
+  
+    UCHAR  Prevent : 1;
+    UCHAR  Persistant : 1;
+    UCHAR  Reserved3 : 6;
+  
+    UCHAR  Control;
+  } MEDIA_REMOVAL, *PMEDIA_REMOVAL;
+  
+  struct _SEEK_BLOCK {
+    UCHAR  OperationCode;
+    UCHAR  Immediate : 1;
+    UCHAR  Reserved1 : 7;
+    UCHAR  BlockAddress[3];
+    UCHAR  Link : 1;
+    UCHAR  Flag : 1;
+    UCHAR  Reserved2 : 4;
+    UCHAR  VendorUnique : 2;
+  } SEEK_BLOCK, *PSEEK_BLOCK;
+  
+  struct _REQUEST_BLOCK_ADDRESS {
+    UCHAR  OperationCode;
+    UCHAR  Reserved1[3];
+    UCHAR  AllocationLength;
+    UCHAR  Link : 1;
+    UCHAR  Flag : 1;
+    UCHAR  Reserved2 : 4;
+    UCHAR  VendorUnique : 2;
+  } REQUEST_BLOCK_ADDRESS, *PREQUEST_BLOCK_ADDRESS;
+  
+  struct _PARTITION {
+    UCHAR  OperationCode;
+    UCHAR  Immediate : 1;
+    UCHAR  Sel: 1;
+    UCHAR  PartitionSelect : 6;
+    UCHAR  Reserved1[3];
+    UCHAR  Control;
+  } PARTITION, *PPARTITION;
+  
+  struct _WRITE_TAPE_MARKS {
+    UCHAR  OperationCode;
+    UCHAR  Immediate : 1;
+    UCHAR  WriteSetMarks: 1;
+    UCHAR  Reserved : 3;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  TransferLength[3];
+    UCHAR  Control;
+  } WRITE_TAPE_MARKS, *PWRITE_TAPE_MARKS;
+  
+  struct _SPACE_TAPE_MARKS {
+    UCHAR  OperationCode;
+    UCHAR  Code : 3;
+    UCHAR  Reserved : 2;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  NumMarksMSB ;
+    UCHAR  NumMarks;
+    UCHAR  NumMarksLSB;
+  union {
+        UCHAR  value;
+      struct {
+            UCHAR  Link : 1;
+            UCHAR  Flag : 1;
+            UCHAR  Reserved : 4;
+            UCHAR  VendorUnique : 2;
+      } Fields;
+  } Byte6;
+  } SPACE_TAPE_MARKS, *PSPACE_TAPE_MARKS;
+  
+  struct _READ_POSITION {
+    UCHAR  Operation;
+    UCHAR  BlockType : 1;
+    UCHAR  Reserved1 : 4;
+    UCHAR  Lun : 3;
+    UCHAR  Reserved2[7];
+    UCHAR  Control;
+  } READ_POSITION, *PREAD_POSITION;
+  
+  struct _CDB6READWRITETAPE {
+    UCHAR  OperationCode;
+    UCHAR  VendorSpecific : 5;
+    UCHAR  Reserved : 3;
+    UCHAR  TransferLenMSB;
+    UCHAR  TransferLen;
+    UCHAR  TransferLenLSB;
+    UCHAR  Link : 1;
+    UCHAR  Flag : 1;
+    UCHAR  Reserved1 : 4;
+    UCHAR  VendorUnique : 2;
+  } CDB6READWRITETAPE, *PCDB6READWRITETAPE;
+  
+  struct _INIT_ELEMENT_STATUS {
+    UCHAR  OperationCode;
+    UCHAR  Reserved1 : 5;
+    UCHAR  LogicalUnitNubmer : 3;
+    UCHAR  Reserved2[3];
+    UCHAR  Reserved3 : 7;
+    UCHAR  NoBarCode : 1;
+  } INIT_ELEMENT_STATUS, *PINIT_ELEMENT_STATUS;
+  
+  struct _INITIALIZE_ELEMENT_RANGE {
+    UCHAR  OperationCode;
+    UCHAR  Range : 1;
+    UCHAR  Reserved1 : 4;
+    UCHAR  LogicalUnitNubmer : 3;
+    UCHAR  FirstElementAddress[2];
+    UCHAR  Reserved2[2];
+    UCHAR  NumberOfElements[2];
+    UCHAR  Reserved3;
+    UCHAR  Reserved4 : 7;
+    UCHAR  NoBarCode : 1;
+  } INITIALIZE_ELEMENT_RANGE, *PINITIALIZE_ELEMENT_RANGE;
+  
+  struct _POSITION_TO_ELEMENT {
+    UCHAR  OperationCode;
+    UCHAR  Reserved1 : 5;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  TransportElementAddress[2];
+    UCHAR  DestinationElementAddress[2];
+    UCHAR  Reserved2[2];
+    UCHAR  Flip : 1;
+    UCHAR  Reserved3 : 7;
+    UCHAR  Control;
+  } POSITION_TO_ELEMENT, *PPOSITION_TO_ELEMENT;
+  
+  struct _MOVE_MEDIUM {
+    UCHAR  OperationCode;
+    UCHAR  Reserved1 : 5;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  TransportElementAddress[2];
+    UCHAR  SourceElementAddress[2];
+    UCHAR  DestinationElementAddress[2];
+    UCHAR  Reserved2[2];
+    UCHAR  Flip : 1;
+    UCHAR  Reserved3 : 7;
+    UCHAR  Control;
+  } MOVE_MEDIUM, *PMOVE_MEDIUM;
+  
+  struct _EXCHANGE_MEDIUM {
+    UCHAR  OperationCode;
+    UCHAR  Reserved1 : 5;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  TransportElementAddress[2];
+    UCHAR  SourceElementAddress[2];
+    UCHAR  Destination1ElementAddress[2];
+    UCHAR  Destination2ElementAddress[2];
+    UCHAR  Flip1 : 1;
+    UCHAR  Flip2 : 1;
+    UCHAR  Reserved3 : 6;
+    UCHAR  Control;
+  } EXCHANGE_MEDIUM, *PEXCHANGE_MEDIUM;
+  
+  struct _READ_ELEMENT_STATUS {
+    UCHAR  OperationCode;
+    UCHAR  ElementType : 4;
+    UCHAR  VolTag : 1;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  StartingElementAddress[2];
+    UCHAR  NumberOfElements[2];
+    UCHAR  Reserved1;
+    UCHAR  AllocationLength[3];
+    UCHAR  Reserved2;
+    UCHAR  Control;
+  } READ_ELEMENT_STATUS, *PREAD_ELEMENT_STATUS;
+  
+  struct _SEND_VOLUME_TAG {
+    UCHAR  OperationCode;
+    UCHAR  ElementType : 4;
+    UCHAR  Reserved1 : 1;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  StartingElementAddress[2];
+    UCHAR  Reserved2;
+    UCHAR  ActionCode : 5;
+    UCHAR  Reserved3 : 3;
+    UCHAR  Reserved4[2];
+    UCHAR  ParameterListLength[2];
+    UCHAR  Reserved5;
+    UCHAR  Control;
+  } SEND_VOLUME_TAG, *PSEND_VOLUME_TAG;
+  
+  struct _REQUEST_VOLUME_ELEMENT_ADDRESS {
+    UCHAR  OperationCode;
+    UCHAR  ElementType : 4;
+    UCHAR  VolTag : 1;
+    UCHAR  LogicalUnitNumber : 3;
+    UCHAR  StartingElementAddress[2];
+    UCHAR  NumberElements[2];
+    UCHAR  Reserved1;
+    UCHAR  AllocationLength[3];
+    UCHAR  Reserved2;
+    UCHAR  Control;
+  } REQUEST_VOLUME_ELEMENT_ADDRESS, *PREQUEST_VOLUME_ELEMENT_ADDRESS;
+  
+  struct _LOAD_UNLOAD {
+    UCHAR  OperationCode;
+    UCHAR  Immediate : 1;
+    UCHAR  Reserved1 : 4;
+    UCHAR  Lun : 3;
+    UCHAR  Reserved2[2];
+    UCHAR  Start : 1;
+    UCHAR  LoadEject : 1;
+    UCHAR  Reserved3: 6;
+    UCHAR  Reserved4[3];
+    UCHAR  Slot;
+    UCHAR  Reserved5[3];
+  } LOAD_UNLOAD, *PLOAD_UNLOAD;
+  
+  struct _MECH_STATUS {
+    UCHAR  OperationCode;
+    UCHAR  Reserved : 5;
+    UCHAR  Lun : 3;
+    UCHAR  Reserved1[6];
+    UCHAR  AllocationLength[2];
+    UCHAR  Reserved2[1];
+    UCHAR  Control;
+  } MECH_STATUS, *PMECH_STATUS;
+  
+  struct _SYNCHRONIZE_CACHE10 {
+  
+    UCHAR  OperationCode;
+  
+    UCHAR  RelAddr : 1;
+    UCHAR  Immediate : 1;
+    UCHAR  Reserved : 3;
+    UCHAR  Lun : 3;
+  
+    UCHAR  LogicalBlockAddress[4];
+    UCHAR  Reserved2;
+    UCHAR  BlockCount[2];
+    UCHAR  Control;
+  } SYNCHRONIZE_CACHE10, *PSYNCHRONIZE_CACHE10;
+  
+  struct _GET_EVENT_STATUS_NOTIFICATION {
+    UCHAR  OperationCode;
+  
+    UCHAR  Immediate : 1;
+    UCHAR  Reserved : 4;
+    UCHAR  Lun : 3;
+  
+    UCHAR  Reserved2[2];
+    UCHAR  NotificationClassRequest;
+    UCHAR  Reserved3[2];
+    UCHAR  EventListLength[2];
+  
+    UCHAR  Control;
+  } GET_EVENT_STATUS_NOTIFICATION, *PGET_EVENT_STATUS_NOTIFICATION;
+  
+  struct _READ_DVD_STRUCTURE {
+    UCHAR  OperationCode;
+    UCHAR  Reserved1 : 5;
+    UCHAR  Lun : 3;
+    UCHAR  RMDBlockNumber[4];
+    UCHAR  LayerNumber;
+    UCHAR  Format;
+    UCHAR  AllocationLength[2];
+    UCHAR  Reserved3 : 6;
+    UCHAR  AGID : 2;
+    UCHAR  Control;
+  } READ_DVD_STRUCTURE, *PREAD_DVD_STRUCTURE;
+  
+  struct _SEND_DVD_STRUCTURE {
+    UCHAR  OperationCode;
+    UCHAR  Reserved1 : 5;
+    UCHAR  Lun : 3;
+    UCHAR  Reserved2[5];
+    UCHAR  Format;
+    UCHAR  ParameterListLength[2];
+    UCHAR  Reserved3;
+    UCHAR  Control;
+  } SEND_DVD_STRUCTURE, *PSEND_DVD_STRUCTURE;
+  
+  struct _SEND_KEY {
+    UCHAR  OperationCode;
+    UCHAR  Reserved1 : 5;
+    UCHAR  Lun : 3;
+    UCHAR  Reserved2[6];
+    UCHAR  ParameterListLength[2];
+    UCHAR  KeyFormat : 6;
+    UCHAR  AGID : 2;
+    UCHAR  Control;
+  } SEND_KEY, *PSEND_KEY;
+  
+  struct _REPORT_KEY {
+    UCHAR  OperationCode;
+    UCHAR  Reserved1 : 5;
+    UCHAR  Lun : 3;
+    UCHAR  LogicalBlockAddress[4];
+    UCHAR  Reserved2[2];
+    UCHAR  AllocationLength[2];
+    UCHAR  KeyFormat : 6;
+    UCHAR  AGID : 2;
+    UCHAR  Control;
+  } REPORT_KEY, *PREPORT_KEY;
+  
+  struct _SET_READ_AHEAD {
+    UCHAR  OperationCode;
+    UCHAR  Reserved1 : 5;
+    UCHAR  Lun : 3;
+    UCHAR  TriggerLBA[4];
+    UCHAR  ReadAheadLBA[4];
+    UCHAR  Reserved2;
+    UCHAR  Control;
+  } SET_READ_AHEAD, *PSET_READ_AHEAD;
+  
+  struct _READ_FORMATTED_CAPACITIES {
+    UCHAR  OperationCode;
+    UCHAR  Reserved1 : 5;
+    UCHAR  Lun : 3;
+    UCHAR  Reserved2[5];
+    UCHAR  AllocationLength[2];
+    UCHAR  Control;
+  } READ_FORMATTED_CAPACITIES, *PREAD_FORMATTED_CAPACITIES;
+  
+  struct _REPORT_LUNS {
+    UCHAR  OperationCode;
+    UCHAR  Reserved1[5];
+    UCHAR  AllocationLength[4];
+    UCHAR  Reserved2[1];
+    UCHAR  Control;
+  } REPORT_LUNS, *PREPORT_LUNS;
+  
+  struct _PERSISTENT_RESERVE_IN {
+    UCHAR  OperationCode;
+    UCHAR  ServiceAction : 5;
+    UCHAR  Reserved1 : 3;
+    UCHAR  Reserved2[5];
+    UCHAR  AllocationLength[2];
+    UCHAR  Control;
+  } PERSISTENT_RESERVE_IN, *PPERSISTENT_RESERVE_IN;
+  
+  struct _PERSISTENT_RESERVE_OUT {
+    UCHAR  OperationCode;
+    UCHAR  ServiceAction : 5;
+    UCHAR  Reserved1 : 3;
+    UCHAR  Type : 4;
+    UCHAR  Scope : 4;
+    UCHAR  Reserved2[4];
+    UCHAR  ParameterListLength[2];
+    UCHAR  Control;
+  } PERSISTENT_RESERVE_OUT, *PPERSISTENT_RESERVE_OUT;
+  
+  struct _GET_CONFIGURATION {
+    UCHAR  OperationCode;
+    UCHAR  RequestType : 1;
+    UCHAR  Reserved1   : 7;
+    UCHAR  StartingFeature[2];
+    UCHAR  Reserved2[3];
+    UCHAR  AllocationLength[2];
+    UCHAR  Control;
+  } GET_CONFIGURATION, *PGET_CONFIGURATION;
+  
+  struct _SET_CD_SPEED {
+    UCHAR  OperationCode;
+    UCHAR  Reserved1;
+    UCHAR  ReadSpeed[2];
+    UCHAR  WriteSpeed[2];
+    UCHAR  Reserved2[5];
+    UCHAR  Control;
+  } SET_CD_SPEED, *PSET_CD_SPEED;
+  
+  ULONG AsUlong[4];
+    UCHAR  AsByte[16];
+} CDB, *PCDB;
+
+#ifndef _INQUIRYDATA_DEFINED /* also in minitape.h */
+#define _INQUIRYDATA_DEFINED
+
+#define INQUIRYDATABUFFERSIZE             36
+
+typedef struct _INQUIRYDATA {
+  UCHAR  DeviceType : 5;
+  UCHAR  DeviceTypeQualifier : 3;
+  UCHAR  DeviceTypeModifier : 7;
+  UCHAR  RemovableMedia : 1;
+  _ANONYMOUS_UNION union {
+    UCHAR  Versions;
+    _ANONYMOUS_STRUCT struct {
+      UCHAR  ANSIVersion : 3;
+      UCHAR  ECMAVersion : 3;
+      UCHAR  ISOVersion : 2;
+    } DUMMYSTRUCTNAME;
+  } DUMMYUNIONNAME;
+  UCHAR  ResponseDataFormat : 4;
+  UCHAR  HiSupport : 1;
+  UCHAR  NormACA : 1;
+  UCHAR  TerminateTask : 1;
+  UCHAR  AERC : 1;
+  UCHAR  AdditionalLength;
+  UCHAR  Reserved;
+  UCHAR  Addr16 : 1;
+  UCHAR  Addr32 : 1;
+  UCHAR  AckReqQ: 1;
+  UCHAR  MediumChanger : 1;
+  UCHAR  MultiPort : 1;
+  UCHAR  ReservedBit2 : 1;
+  UCHAR  EnclosureServices : 1;
+  UCHAR  ReservedBit3 : 1;
+  UCHAR  SoftReset : 1;
+  UCHAR  CommandQueue : 1;
+  UCHAR  TransferDisable : 1;
+  UCHAR  LinkedCommands : 1;
+  UCHAR  Synchronous : 1;
+  UCHAR  Wide16Bit : 1;
+  UCHAR  Wide32Bit : 1;
+  UCHAR  RelativeAddressing : 1;
+  UCHAR  VendorId[8];
+  UCHAR  ProductId[16];
+  UCHAR  ProductRevisionLevel[4];
+  UCHAR  VendorSpecific[20];
+  UCHAR  Reserved3[40];
+} INQUIRYDATA, *PINQUIRYDATA;
+#endif
+
+/* INQUIRYDATA.DeviceType constants */
+#define DIRECT_ACCESS_DEVICE              0x00
+#define SEQUENTIAL_ACCESS_DEVICE          0x01
+#define PRINTER_DEVICE                    0x02
+#define PROCESSOR_DEVICE                  0x03
+#define WRITE_ONCE_READ_MULTIPLE_DEVICE   0x04
+#define READ_ONLY_DIRECT_ACCESS_DEVICE    0x05
+#define SCANNER_DEVICE                    0x06
+#define OPTICAL_DEVICE                    0x07
+#define MEDIUM_CHANGER                    0x08
+#define COMMUNICATION_DEVICE              0x09
+#define LOGICAL_UNIT_NOT_PRESENT_DEVICE   0x7F
+#define DEVICE_QUALIFIER_NOT_SUPPORTED    0x03
+
+/* INQUIRYDATA.DeviceTypeQualifier constants */
+#define DEVICE_CONNECTED 0x00
+
+#define SCSISTAT_GOOD                     0x00
+#define SCSISTAT_CHECK_CONDITION          0x02
+#define SCSISTAT_CONDITION_MET            0x04
+#define SCSISTAT_BUSY                     0x08
+#define SCSISTAT_INTERMEDIATE             0x10
+#define SCSISTAT_INTERMEDIATE_COND_MET    0x14
+#define SCSISTAT_RESERVATION_CONFLICT     0x18
+#define SCSISTAT_COMMAND_TERMINATED       0x22
+#define SCSISTAT_QUEUE_FULL               0x28
+
+/* Mode Sense/Select page constants */
+#define MODE_PAGE_ERROR_RECOVERY          0x01
+#define MODE_PAGE_DISCONNECT              0x02
+#define MODE_PAGE_FORMAT_DEVICE           0x03
+#define MODE_PAGE_RIGID_GEOMETRY          0x04
+#define MODE_PAGE_FLEXIBILE               0x05
+#define MODE_PAGE_WRITE_PARAMETERS        0x05
+#define MODE_PAGE_VERIFY_ERROR            0x07
+#define MODE_PAGE_CACHING                 0x08
+#define MODE_PAGE_PERIPHERAL              0x09
+#define MODE_PAGE_CONTROL                 0x0A
+#define MODE_PAGE_MEDIUM_TYPES            0x0B
+#define MODE_PAGE_NOTCH_PARTITION         0x0C
+#define MODE_PAGE_CD_AUDIO_CONTROL        0x0E
+#define MODE_PAGE_DATA_COMPRESS           0x0F
+#define MODE_PAGE_DEVICE_CONFIG           0x10
+#define MODE_PAGE_MEDIUM_PARTITION        0x11
+#define MODE_PAGE_CDVD_FEATURE_SET        0x18
+#define MODE_PAGE_POWER_CONDITION         0x1A
+#define MODE_PAGE_FAULT_REPORTING         0x1C
+#define MODE_PAGE_CDVD_INACTIVITY         0x1D
+#define MODE_PAGE_ELEMENT_ADDRESS         0x1D
+#define MODE_PAGE_TRANSPORT_GEOMETRY      0x1E
+#define MODE_PAGE_DEVICE_CAPABILITIES     0x1F
+#define MODE_PAGE_CAPABILITIES            0x2A
+#define MODE_SENSE_RETURN_ALL             0x3f
+#define MODE_SENSE_CURRENT_VALUES         0x00
+#define MODE_SENSE_CHANGEABLE_VALUES      0x40
+#define MODE_SENSE_DEFAULT_VAULES         0x80
+#define MODE_SENSE_SAVED_VALUES           0xc0
+
+/* SCSI CDB operation codes */
+#define SCSIOP_TEST_UNIT_READY            0x00
+#define SCSIOP_REZERO_UNIT                0x01
+#define SCSIOP_REWIND                     0x01
+#define SCSIOP_REQUEST_BLOCK_ADDR         0x02
+#define SCSIOP_REQUEST_SENSE              0x03
+#define SCSIOP_FORMAT_UNIT                0x04
+#define SCSIOP_READ_BLOCK_LIMITS          0x05
+#define SCSIOP_REASSIGN_BLOCKS            0x07
+#define SCSIOP_INIT_ELEMENT_STATUS        0x07
+#define SCSIOP_READ6                      0x08
+#define SCSIOP_RECEIVE                    0x08
+#define SCSIOP_WRITE6                     0x0A
+#define SCSIOP_PRINT                      0x0A
+#define SCSIOP_SEND                       0x0A
+#define SCSIOP_SEEK6                      0x0B
+#define SCSIOP_TRACK_SELECT               0x0B
+#define SCSIOP_SLEW_PRINT                 0x0B
+#define SCSIOP_SEEK_BLOCK                 0x0C
+#define SCSIOP_PARTITION                  0x0D
+#define SCSIOP_READ_REVERSE               0x0F
+#define SCSIOP_WRITE_FILEMARKS            0x10
+#define SCSIOP_FLUSH_BUFFER               0x10
+#define SCSIOP_SPACE                      0x11
+#define SCSIOP_INQUIRY                    0x12
+#define SCSIOP_VERIFY6                    0x13
+#define SCSIOP_RECOVER_BUF_DATA           0x14
+#define SCSIOP_MODE_SELECT                0x15
+#define SCSIOP_RESERVE_UNIT               0x16
+#define SCSIOP_RELEASE_UNIT               0x17
+#define SCSIOP_COPY                       0x18
+#define SCSIOP_ERASE                      0x19
+#define SCSIOP_MODE_SENSE                 0x1A
+#define SCSIOP_START_STOP_UNIT            0x1B
+#define SCSIOP_STOP_PRINT                 0x1B
+#define SCSIOP_LOAD_UNLOAD                0x1B
+#define SCSIOP_RECEIVE_DIAGNOSTIC         0x1C
+#define SCSIOP_SEND_DIAGNOSTIC            0x1D
+#define SCSIOP_MEDIUM_REMOVAL             0x1E
+
+#define SCSIOP_READ_FORMATTED_CAPACITY    0x23
+#define SCSIOP_READ_CAPACITY              0x25
+#define SCSIOP_READ                       0x28
+#define SCSIOP_WRITE                      0x2A
+#define SCSIOP_SEEK                       0x2B
+#define SCSIOP_LOCATE                     0x2B
+#define SCSIOP_POSITION_TO_ELEMENT        0x2B
+#define SCSIOP_WRITE_VERIFY               0x2E
+#define SCSIOP_VERIFY                     0x2F
+#define SCSIOP_SEARCH_DATA_HIGH           0x30
+#define SCSIOP_SEARCH_DATA_EQUAL          0x31
+#define SCSIOP_SEARCH_DATA_LOW            0x32
+#define SCSIOP_SET_LIMITS                 0x33
+#define SCSIOP_READ_POSITION              0x34
+#define SCSIOP_SYNCHRONIZE_CACHE          0x35
+#define SCSIOP_COMPARE                    0x39
+#define SCSIOP_COPY_COMPARE               0x3A
+#define SCSIOP_WRITE_DATA_BUFF            0x3B
+#define SCSIOP_READ_DATA_BUFF             0x3C
+#define SCSIOP_CHANGE_DEFINITION          0x40
+#define SCSIOP_READ_SUB_CHANNEL           0x42
+#define SCSIOP_READ_TOC                   0x43
+#define SCSIOP_READ_HEADER                0x44
+#define SCSIOP_PLAY_AUDIO                 0x45
+#define SCSIOP_GET_CONFIGURATION          0x46
+#define SCSIOP_PLAY_AUDIO_MSF             0x47
+#define SCSIOP_PLAY_TRACK_INDEX           0x48
+#define SCSIOP_PLAY_TRACK_RELATIVE        0x49
+#define SCSIOP_GET_EVENT_STATUS           0x4A
+#define SCSIOP_PAUSE_RESUME               0x4B
+#define SCSIOP_LOG_SELECT                 0x4C
+#define SCSIOP_LOG_SENSE                  0x4D
+#define SCSIOP_STOP_PLAY_SCAN             0x4E
+#define SCSIOP_READ_DISK_INFORMATION      0x51
+#define SCSIOP_READ_TRACK_INFORMATION     0x52
+#define SCSIOP_RESERVE_TRACK_RZONE        0x53
+#define SCSIOP_SEND_OPC_INFORMATION       0x54
+#define SCSIOP_MODE_SELECT10              0x55
+#define SCSIOP_MODE_SENSE10               0x5A
+#define SCSIOP_CLOSE_TRACK_SESSION        0x5B
+#define SCSIOP_READ_BUFFER_CAPACITY       0x5C
+#define SCSIOP_SEND_CUE_SHEET             0x5D
+#define SCSIOP_PERSISTENT_RESERVE_IN      0x5E
+#define SCSIOP_PERSISTENT_RESERVE_OUT     0x5F
+
+#define SCSIOP_REPORT_LUNS                0xA0
+#define SCSIOP_BLANK                      0xA1
+#define SCSIOP_SEND_KEY                   0xA3
+#define SCSIOP_REPORT_KEY                 0xA4
+#define SCSIOP_MOVE_MEDIUM                0xA5
+#define SCSIOP_LOAD_UNLOAD_SLOT           0xA6
+#define SCSIOP_EXCHANGE_MEDIUM            0xA6
+#define SCSIOP_SET_READ_AHEAD             0xA7
+#define SCSIOP_READ_DVD_STRUCTURE         0xAD
+#define SCSIOP_REQUEST_VOL_ELEMENT        0xB5
+#define SCSIOP_SEND_VOLUME_TAG            0xB6
+#define SCSIOP_READ_ELEMENT_STATUS        0xB8
+#define SCSIOP_READ_CD_MSF                0xB9
+#define SCSIOP_SCAN_CD                    0xBA
+#define SCSIOP_SET_CD_SPEED               0xBB
+#define SCSIOP_PLAY_CD                    0xBC
+#define SCSIOP_MECHANISM_STATUS           0xBD
+#define SCSIOP_READ_CD                    0xBE
+#define SCSIOP_SEND_DVD_STRUCTURE         0xBF
+#define SCSIOP_INIT_ELEMENT_RANGE         0xE7
+
+#define SCSIOP_DENON_EJECT_DISC           0xE6
+#define SCSIOP_DENON_STOP_AUDIO           0xE7
+#define SCSIOP_DENON_PLAY_AUDIO           0xE8
+#define SCSIOP_DENON_READ_TOC             0xE9
+#define SCSIOP_DENON_READ_SUBCODE         0xEB
+
+#define SCSIMESS_MODIFY_DATA_POINTER      0x00
+#define SCSIMESS_SYNCHRONOUS_DATA_REQ     0x01
+#define SCSIMESS_WIDE_DATA_REQUEST        0x03
+
+#define SCSIMESS_MODIFY_DATA_LENGTH       5
+#define SCSIMESS_SYNCH_DATA_LENGTH        3
+#define SCSIMESS_WIDE_DATA_LENGTH         2
+
+#define SCSIMESS_ABORT                    0x06
+#define SCSIMESS_ABORT_WITH_TAG           0x0D
+#define SCSIMESS_BUS_DEVICE_RESET         0x0C
+#define SCSIMESS_CLEAR_QUEUE              0x0E
+#define SCSIMESS_COMMAND_COMPLETE         0x00
+#define SCSIMESS_DISCONNECT               0x04
+#define SCSIMESS_EXTENDED_MESSAGE         0x01
+#define SCSIMESS_IDENTIFY                 0x80
+#define SCSIMESS_IDENTIFY_WITH_DISCON     0xC0
+#define SCSIMESS_IGNORE_WIDE_RESIDUE      0x23
+#define SCSIMESS_INITIATE_RECOVERY        0x0F
+#define SCSIMESS_INIT_DETECTED_ERROR      0x05
+#define SCSIMESS_LINK_CMD_COMP            0x0A
+#define SCSIMESS_LINK_CMD_COMP_W_FLAG     0x0B
+#define SCSIMESS_MESS_PARITY_ERROR        0x09
+#define SCSIMESS_MESSAGE_REJECT           0x07
+#define SCSIMESS_NO_OPERATION             0x08
+#define SCSIMESS_HEAD_OF_QUEUE_TAG        0x21
+#define SCSIMESS_ORDERED_QUEUE_TAG        0x22
+#define SCSIMESS_SIMPLE_QUEUE_TAG         0x20
+#define SCSIMESS_RELEASE_RECOVERY         0x10
+#define SCSIMESS_RESTORE_POINTERS         0x03
+#define SCSIMESS_SAVE_DATA_POINTER        0x02
+#define SCSIMESS_TERMINATE_IO_PROCESS     0x11
+
+#define CDB_FORCE_MEDIA_ACCESS            0x08
+
+#define CDB_RETURN_ON_COMPLETION          0
+#define CDB_RETURN_IMMEDIATE              1
+
+#define CDB_INQUIRY_EVPD                  0x01
+
+#define LUN0_FORMAT_SAVING_DEFECT_LIST    0
+#define USE_DEFAULTMSB                    0
+#define USE_DEFAULTLSB                    0
+
+#define START_UNIT_CODE                   0x01
+#define STOP_UNIT_CODE                    0x00
+
+typedef struct _SENSE_DATA {
+  UCHAR  ErrorCode : 7;
+  UCHAR  Valid : 1;
+  UCHAR  SegmentNumber;
+  UCHAR  SenseKey : 4;
+  UCHAR  Reserved : 1;
+  UCHAR  IncorrectLength : 1;
+  UCHAR  EndOfMedia : 1;
+  UCHAR  FileMark : 1;
+  UCHAR  Information[4];
+  UCHAR  AdditionalSenseLength;
+  UCHAR  CommandSpecificInformation[4];
+  UCHAR  AdditionalSenseCode;
+  UCHAR  AdditionalSenseCodeQualifier;
+  UCHAR  FieldReplaceableUnitCode;
+  UCHAR  SenseKeySpecific[3];
+} SENSE_DATA, *PSENSE_DATA;
+
+#define SENSE_BUFFER_SIZE                 18
+
+/* Sense codes */
+#define SCSI_SENSE_NO_SENSE               0x00
+#define SCSI_SENSE_RECOVERED_ERROR        0x01
+#define SCSI_SENSE_NOT_READY              0x02
+#define SCSI_SENSE_MEDIUM_ERROR           0x03
+#define SCSI_SENSE_HARDWARE_ERROR         0x04
+#define SCSI_SENSE_ILLEGAL_REQUEST        0x05
+#define SCSI_SENSE_UNIT_ATTENTION         0x06
+#define SCSI_SENSE_DATA_PROTECT           0x07
+#define SCSI_SENSE_BLANK_CHECK            0x08
+#define SCSI_SENSE_UNIQUE                 0x09
+#define SCSI_SENSE_COPY_ABORTED           0x0A
+#define SCSI_SENSE_ABORTED_COMMAND        0x0B
+#define SCSI_SENSE_EQUAL                  0x0C
+#define SCSI_SENSE_VOL_OVERFLOW           0x0D
+#define SCSI_SENSE_MISCOMPARE             0x0E
+#define SCSI_SENSE_RESERVED               0x0F
+
+/* Additional tape bit */
+#define SCSI_ILLEGAL_LENGTH               0x20
+#define SCSI_EOM                          0x40
+#define SCSI_FILE_MARK                    0x80
+
+/* Additional Sense codes */
+#define SCSI_ADSENSE_NO_SENSE                              0x00
+#define SCSI_ADSENSE_NO_SEEK_COMPLETE                      0x02
+#define SCSI_ADSENSE_LUN_NOT_READY                         0x04
+#define SCSI_ADSENSE_WRITE_ERROR                           0x0C
+#define SCSI_ADSENSE_TRACK_ERROR                           0x14
+#define SCSI_ADSENSE_SEEK_ERROR                            0x15
+#define SCSI_ADSENSE_REC_DATA_NOECC                        0x17
+#define SCSI_ADSENSE_REC_DATA_ECC                          0x18
+#define SCSI_ADSENSE_ILLEGAL_COMMAND                       0x20
+#define SCSI_ADSENSE_ILLEGAL_BLOCK                         0x21
+#define SCSI_ADSENSE_INVALID_CDB                           0x24
+#define SCSI_ADSENSE_INVALID_LUN                           0x25
+#define SCSI_ADSENSE_WRITE_PROTECT                         0x27
+#define SCSI_ADSENSE_MEDIUM_CHANGED                        0x28
+#define SCSI_ADSENSE_BUS_RESET                             0x29
+#define SCSI_ADSENSE_INSUFFICIENT_TIME_FOR_OPERATION       0x2E
+#define SCSI_ADSENSE_INVALID_MEDIA                         0x30
+#define SCSI_ADSENSE_NO_MEDIA_IN_DEVICE                    0x3a
+#define SCSI_ADSENSE_POSITION_ERROR                        0x3b
+#define SCSI_ADSENSE_OPERATOR_REQUEST                      0x5a
+#define SCSI_ADSENSE_FAILURE_PREDICTION_THRESHOLD_EXCEEDED 0x5d
+#define SCSI_ADSENSE_ILLEGAL_MODE_FOR_THIS_TRACK           0x64
+#define SCSI_ADSENSE_COPY_PROTECTION_FAILURE               0x6f
+#define SCSI_ADSENSE_POWER_CALIBRATION_ERROR               0x73
+#define SCSI_ADSENSE_VENDOR_UNIQUE                         0x80
+#define SCSI_ADSENSE_MUSIC_AREA                            0xA0
+#define SCSI_ADSENSE_DATA_AREA                             0xA1
+#define SCSI_ADSENSE_VOLUME_OVERFLOW                       0xA7
+
+#define SCSI_SENSEQ_CAUSE_NOT_REPORTABLE                   0x00
+#define SCSI_SENSEQ_BECOMING_READY                         0x01
+#define SCSI_SENSEQ_INIT_COMMAND_REQUIRED                  0x02
+#define SCSI_SENSEQ_MANUAL_INTERVENTION_REQUIRED           0x03
+#define SCSI_SENSEQ_FORMAT_IN_PROGRESS                     0x04
+#define SCSI_SENSEQ_REBUILD_IN_PROGRESS                    0x05
+#define SCSI_SENSEQ_RECALCULATION_IN_PROGRESS              0x06
+#define SCSI_SENSEQ_OPERATION_IN_PROGRESS                  0x07
+#define SCSI_SENSEQ_LONG_WRITE_IN_PROGRESS                 0x08
+#define SCSI_SENSEQ_LOSS_OF_STREAMING                      0x09
+#define SCSI_SENSEQ_PADDING_BLOCKS_ADDED                   0x0A
+
+
+#define FILE_DEVICE_SCSI 0x0000001b
+
+#define IOCTL_SCSI_EXECUTE_IN ((FILE_DEVICE_SCSI << 16) + 0x0011)
+#define IOCTL_SCSI_EXECUTE_OUT ((FILE_DEVICE_SCSI << 16) + 0x0012)
+#define IOCTL_SCSI_EXECUTE_NONE ((FILE_DEVICE_SCSI << 16) + 0x0013)
+
+/* SMART support in ATAPI */
+#define IOCTL_SCSI_MINIPORT_SMART_VERSION               ((FILE_DEVICE_SCSI << 16) + 0x0500)
+#define IOCTL_SCSI_MINIPORT_IDENTIFY                    ((FILE_DEVICE_SCSI << 16) + 0x0501)
+#define IOCTL_SCSI_MINIPORT_READ_SMART_ATTRIBS          ((FILE_DEVICE_SCSI << 16) + 0x0502)
+#define IOCTL_SCSI_MINIPORT_READ_SMART_THRESHOLDS       ((FILE_DEVICE_SCSI << 16) + 0x0503)
+#define IOCTL_SCSI_MINIPORT_ENABLE_SMART                ((FILE_DEVICE_SCSI << 16) + 0x0504)
+#define IOCTL_SCSI_MINIPORT_DISABLE_SMART               ((FILE_DEVICE_SCSI << 16) + 0x0505)
+#define IOCTL_SCSI_MINIPORT_RETURN_STATUS               ((FILE_DEVICE_SCSI << 16) + 0x0506)
+#define IOCTL_SCSI_MINIPORT_ENABLE_DISABLE_AUTOSAVE     ((FILE_DEVICE_SCSI << 16) + 0x0507)
+#define IOCTL_SCSI_MINIPORT_SAVE_ATTRIBUTE_VALUES       ((FILE_DEVICE_SCSI << 16) + 0x0508)
+#define IOCTL_SCSI_MINIPORT_EXECUTE_OFFLINE_DIAGS       ((FILE_DEVICE_SCSI << 16) + 0x0509)
+#define IOCTL_SCSI_MINIPORT_ENABLE_DISABLE_AUTO_OFFLINE ((FILE_DEVICE_SCSI << 16) + 0x050a)
+#define IOCTL_SCSI_MINIPORT_READ_SMART_LOG              ((FILE_DEVICE_SCSI << 16) + 0x050b)
+#define IOCTL_SCSI_MINIPORT_WRITE_SMART_LOG             ((FILE_DEVICE_SCSI << 16) + 0x050c)
+
+/* CLUSTER support */
+#define IOCTL_SCSI_MINIPORT_NOT_QUORUM_CAPABLE  ((FILE_DEVICE_SCSI << 16) + 0x0520)
+#define IOCTL_SCSI_MINIPORT_NOT_CLUSTER_CAPABLE ((FILE_DEVICE_SCSI << 16) + 0x0521)
+
+/* Read Capacity Data. Returned in Big Endian format */
+typedef struct _READ_CAPACITY_DATA {
+  ULONG  LogicalBlockAddress;
+  ULONG  BytesPerBlock;
+} READ_CAPACITY_DATA, *PREAD_CAPACITY_DATA;
+
+/* Read Block Limits Data. Returned in Big Endian format */
+typedef struct _READ_BLOCK_LIMITS {
+  UCHAR  Reserved;
+  UCHAR  BlockMaximumSize[3];
+  UCHAR  BlockMinimumSize[2];
+} READ_BLOCK_LIMITS_DATA, *PREAD_BLOCK_LIMITS_DATA;
+
+
+typedef struct _MODE_PARAMETER_HEADER {
+  UCHAR  ModeDataLength;
+  UCHAR  MediumType;
+  UCHAR  DeviceSpecificParameter;
+  UCHAR  BlockDescriptorLength;
+}MODE_PARAMETER_HEADER, *PMODE_PARAMETER_HEADER;
+
+typedef struct _MODE_PARAMETER_HEADER10 {
+  UCHAR  ModeDataLength[2];
+  UCHAR  MediumType;
+  UCHAR  DeviceSpecificParameter;
+  UCHAR  Reserved[2];
+  UCHAR  BlockDescriptorLength[2];
+} MODE_PARAMETER_HEADER10, *PMODE_PARAMETER_HEADER10;
+
+#define MODE_FD_SINGLE_SIDE               0x01
+#define MODE_FD_DOUBLE_SIDE               0x02
+#define MODE_FD_MAXIMUM_TYPE              0x1E
+#define MODE_DSP_FUA_SUPPORTED            0x10
+#define MODE_DSP_WRITE_PROTECT            0x80
+
+typedef struct _MODE_PARAMETER_BLOCK {
+  UCHAR  DensityCode;
+  UCHAR  NumberOfBlocks[3];
+  UCHAR  Reserved;
+  UCHAR  BlockLength[3];
+} MODE_PARAMETER_BLOCK, *PMODE_PARAMETER_BLOCK;
+
+typedef struct _MODE_DISCONNECT_PAGE {
+  UCHAR  PageCode : 6;
+  UCHAR  Reserved : 1;
+  UCHAR  PageSavable : 1;
+  UCHAR  PageLength;
+  UCHAR  BufferFullRatio;
+  UCHAR  BufferEmptyRatio;
+  UCHAR  BusInactivityLimit[2];
+  UCHAR  BusDisconnectTime[2];
+  UCHAR  BusConnectTime[2];
+  UCHAR  MaximumBurstSize[2];
+  UCHAR  DataTransferDisconnect : 2;
+  UCHAR  Reserved2[3];
+}MODE_DISCONNECT_PAGE, *PMODE_DISCONNECT_PAGE;
+
+typedef struct _MODE_CACHING_PAGE {
+  UCHAR  PageCode : 6;
+  UCHAR  Reserved : 1;
+  UCHAR  PageSavable : 1;
+  UCHAR  PageLength;
+  UCHAR  ReadDisableCache : 1;
+  UCHAR  MultiplicationFactor : 1;
+  UCHAR  WriteCacheEnable : 1;
+  UCHAR  Reserved2 : 5;
+  UCHAR  WriteRetensionPriority : 4;
+  UCHAR  ReadRetensionPriority : 4;
+  UCHAR  DisablePrefetchTransfer[2];
+  UCHAR  MinimumPrefetch[2];
+  UCHAR  MaximumPrefetch[2];
+  UCHAR  MaximumPrefetchCeiling[2];
+}MODE_CACHING_PAGE, *PMODE_CACHING_PAGE;
+
+typedef struct _MODE_CDROM_WRITE_PARAMETERS_PAGE {
+  UCHAR  PageLength;
+  UCHAR  WriteType : 4;
+  UCHAR  TestWrite : 1;
+  UCHAR  LinkSizeValid : 1;
+  UCHAR  BufferUnderrunFreeEnabled : 1;
+  UCHAR  Reserved2 : 1;
+  UCHAR  TrackMode : 4;
+  UCHAR  Copy : 1;
+  UCHAR  FixedPacket : 1;
+  UCHAR  MultiSession : 2;
+  UCHAR  DataBlockType : 4;
+  UCHAR  Reserved3 : 4;    
+  UCHAR  LinkSize;
+  UCHAR  Reserved4;
+  UCHAR  HostApplicationCode : 6;
+  UCHAR  Reserved5 : 2;    
+  UCHAR  SessionFormat;
+  UCHAR  Reserved6;
+  UCHAR  PacketSize[4];
+  UCHAR  AudioPauseLength[2];
+  UCHAR  Reserved7 : 7;
+  UCHAR  MediaCatalogNumberValid : 1;
+  UCHAR  MediaCatalogNumber[13];
+  UCHAR  MediaCatalogNumberZero;
+  UCHAR  MediaCatalogNumberAFrame;
+  UCHAR  Reserved8 : 7;
+  UCHAR  ISRCValid : 1;
+  UCHAR  ISRCCountry[2];
+  UCHAR  ISRCOwner[3];
+  UCHAR  ISRCRecordingYear[2];
+  UCHAR  ISRCSerialNumber[5];
+  UCHAR  ISRCZero;
+  UCHAR  ISRCAFrame;
+  UCHAR  ISRCReserved;
+  UCHAR  SubHeaderData[4];
+} MODE_CDROM_WRITE_PARAMETERS_PAGE, *PMODE_CDROM_WRITE_PARAMETERS_PAGE;
+
+typedef struct _MODE_FLEXIBLE_DISK_PAGE {
+  UCHAR  PageCode : 6;
+  UCHAR  Reserved : 1;
+  UCHAR  PageSavable : 1;
+  UCHAR  PageLength;
+  UCHAR  TransferRate[2];
+  UCHAR  NumberOfHeads;
+  UCHAR  SectorsPerTrack;
+  UCHAR  BytesPerSector[2];
+  UCHAR  NumberOfCylinders[2];
+  UCHAR  StartWritePrecom[2];
+  UCHAR  StartReducedCurrent[2];
+  UCHAR  StepRate[2];
+  UCHAR  StepPluseWidth;
+  UCHAR  HeadSettleDelay[2];
+  UCHAR  MotorOnDelay;
+  UCHAR  MotorOffDelay;
+  UCHAR  Reserved2 : 5;
+  UCHAR  MotorOnAsserted : 1;
+  UCHAR  StartSectorNumber : 1;
+  UCHAR  TrueReadySignal : 1;
+  UCHAR  StepPlusePerCyclynder : 4;
+  UCHAR  Reserved3 : 4;
+  UCHAR  WriteCompenstation;
+  UCHAR  HeadLoadDelay;
+  UCHAR  HeadUnloadDelay;
+  UCHAR  Pin2Usage : 4;
+  UCHAR  Pin34Usage : 4;
+  UCHAR  Pin1Usage : 4;
+  UCHAR  Pin4Usage : 4;
+  UCHAR  MediumRotationRate[2];
+  UCHAR  Reserved4[2];
+} MODE_FLEXIBLE_DISK_PAGE, *PMODE_FLEXIBLE_DISK_PAGE;
+
+typedef struct _MODE_FORMAT_PAGE {
+  UCHAR  PageCode : 6;
+  UCHAR  Reserved : 1;
+  UCHAR  PageSavable : 1;
+  UCHAR  PageLength;
+  UCHAR  TracksPerZone[2];
+  UCHAR  AlternateSectorsPerZone[2];
+  UCHAR  AlternateTracksPerZone[2];
+  UCHAR  AlternateTracksPerLogicalUnit[2];
+  UCHAR  SectorsPerTrack[2];
+  UCHAR  BytesPerPhysicalSector[2];
+  UCHAR  Interleave[2];
+  UCHAR  TrackSkewFactor[2];
+  UCHAR  CylinderSkewFactor[2];
+  UCHAR  Reserved2 : 4;
+  UCHAR  SurfaceFirst : 1;
+  UCHAR  RemovableMedia : 1;
+  UCHAR  HardSectorFormating : 1;
+  UCHAR  SoftSectorFormating : 1;
+  UCHAR  Reserved3[3];
+} MODE_FORMAT_PAGE, *PMODE_FORMAT_PAGE;
+
+typedef struct _MODE_RIGID_GEOMETRY_PAGE {
+  UCHAR  PageCode : 6;
+  UCHAR  Reserved : 1;
+  UCHAR  PageSavable : 1;
+  UCHAR  PageLength;
+  UCHAR  NumberOfCylinders[3];
+  UCHAR  NumberOfHeads;
+  UCHAR  StartWritePrecom[3];
+  UCHAR  StartReducedCurrent[3];
+  UCHAR  DriveStepRate[2];
+  UCHAR  LandZoneCyclinder[3];
+  UCHAR  RotationalPositionLock : 2;
+  UCHAR  Reserved2 : 6;
+  UCHAR  RotationOffset;
+  UCHAR  Reserved3;
+  UCHAR  RoataionRate[2];
+  UCHAR  Reserved4[2];
+} MODE_RIGID_GEOMETRY_PAGE, *PMODE_RIGID_GEOMETRY_PAGE;
+
+typedef struct _MODE_READ_WRITE_RECOVERY_PAGE {
+  UCHAR  PageCode : 6;
+  UCHAR  Reserved1 : 1;
+  UCHAR  PSBit : 1;
+  UCHAR  PageLength;
+  UCHAR  DCRBit : 1;
+  UCHAR  DTEBit : 1;
+  UCHAR  PERBit : 1;
+  UCHAR  EERBit : 1;
+  UCHAR  RCBit : 1;
+  UCHAR  TBBit : 1;
+  UCHAR  ARRE : 1;
+  UCHAR  AWRE : 1;
+  UCHAR  ReadRetryCount;
+  UCHAR  Reserved4[4];
+  UCHAR  WriteRetryCount;
+  UCHAR  Reserved5[3];
+} MODE_READ_WRITE_RECOVERY_PAGE, *PMODE_READ_WRITE_RECOVERY_PAGE;
+
+typedef struct _MODE_READ_RECOVERY_PAGE {
+  UCHAR  PageCode : 6;
+  UCHAR  Reserved1 : 1;
+  UCHAR  PSBit : 1;
+  UCHAR  PageLength;
+  UCHAR  DCRBit : 1;
+  UCHAR  DTEBit : 1;
+  UCHAR  PERBit : 1;
+  UCHAR  Reserved2 : 1;
+  UCHAR  RCBit : 1;
+  UCHAR  TBBit : 1;
+  UCHAR  Reserved3 : 2;
+  UCHAR  ReadRetryCount;
+  UCHAR  Reserved4[4];
+} MODE_READ_RECOVERY_PAGE, *PMODE_READ_RECOVERY_PAGE;
+
+typedef struct _MODE_INFO_EXCEPTIONS {
+  UCHAR  PageCode : 6;
+  UCHAR  Reserved1 : 1;
+  UCHAR  PSBit : 1;
+  UCHAR  PageLength;
+  _ANONYMOUS_UNION union {
+    UCHAR  Flags;
+    _ANONYMOUS_STRUCT struct {
+      UCHAR  LogErr : 1;
+      UCHAR  Reserved2 : 1;
+      UCHAR  Test : 1;
+      UCHAR  Dexcpt : 1;
+      UCHAR  Reserved3 : 3;
+      UCHAR  Perf : 1;
+    } DUMMYSTRUCTNAME;
+  } DUMMYUNIONNAME;
+  UCHAR  ReportMethod : 4;
+  UCHAR  Reserved4 : 4;
+  UCHAR  IntervalTimer[4];
+  UCHAR  ReportCount[4];
+} MODE_INFO_EXCEPTIONS, *PMODE_INFO_EXCEPTIONS;
+
+/* CDROM audio control */
+#define CDB_AUDIO_PAUSE                   0x00
+#define CDB_AUDIO_RESUME                  0x01
+#define CDB_DEVICE_START                  0x11
+#define CDB_DEVICE_STOP                   0x10
+#define CDB_EJECT_MEDIA                   0x10
+#define CDB_LOAD_MEDIA                    0x01
+#define CDB_SUBCHANNEL_HEADER             0x00
+#define CDB_SUBCHANNEL_BLOCK              0x01
+
+#define CDROM_AUDIO_CONTROL_PAGE          0x0E
+#define MODE_SELECT_IMMEDIATE             0x04
+#define MODE_SELECT_PFBIT                 0x10
+
+#define CDB_USE_MSF                       0x01
+
+typedef struct _PORT_OUTPUT {
+  UCHAR  ChannelSelection;
+  UCHAR  Volume;
+} PORT_OUTPUT, *PPORT_OUTPUT;
+
+typedef struct _AUDIO_OUTPUT {
+  UCHAR  CodePage;
+  UCHAR  ParameterLength;
+  UCHAR  Immediate;
+  UCHAR  Reserved[2];
+  UCHAR  LbaFormat;
+  UCHAR  LogicalBlocksPerSecond[2];
+  PORT_OUTPUT  PortOutput[4];
+} AUDIO_OUTPUT, *PAUDIO_OUTPUT;
+
+/* Multisession CDROMs */
+#define GET_LAST_SESSION 0x01
+#define GET_SESSION_DATA 0x02;
+
+/* Atapi 2.5 changers */
+typedef struct _MECHANICAL_STATUS_INFORMATION_HEADER {
+  UCHAR  CurrentSlot : 5;
+  UCHAR  ChangerState : 2;
+  UCHAR  Fault : 1;
+  UCHAR  Reserved : 5;
+  UCHAR  MechanismState : 3;
+  UCHAR  CurrentLogicalBlockAddress[3];
+  UCHAR  NumberAvailableSlots;
+  UCHAR  SlotTableLength[2];
+} MECHANICAL_STATUS_INFORMATION_HEADER, *PMECHANICAL_STATUS_INFORMATION_HEADER;
+
+typedef struct _SLOT_TABLE_INFORMATION {
+  UCHAR  DiscChanged : 1;
+  UCHAR  Reserved : 6;
+  UCHAR  DiscPresent : 1;
+  UCHAR  Reserved2[3];
+} SLOT_TABLE_INFORMATION, *PSLOT_TABLE_INFORMATION;
+
+typedef struct _MECHANICAL_STATUS {
+  MECHANICAL_STATUS_INFORMATION_HEADER  MechanicalStatusHeader;
+  SLOT_TABLE_INFORMATION  SlotTableInfo[1];
+} MECHANICAL_STATUS, *PMECHANICAL_STATUS;
+
+
+/* Tape definitions */
+typedef struct _TAPE_POSITION_DATA {
+	UCHAR  Reserved1 : 2;
+	UCHAR  BlockPositionUnsupported : 1;
+	UCHAR  Reserved2 : 3;
+	UCHAR  EndOfPartition : 1;
+	UCHAR  BeginningOfPartition : 1;
+	UCHAR  PartitionNumber;
+	USHORT  Reserved3;
+	UCHAR  FirstBlock[4];
+	UCHAR  LastBlock[4];
+	UCHAR  Reserved4;
+	UCHAR  NumberOfBlocks[3];
+	UCHAR  NumberOfBytes[4];
+} TAPE_POSITION_DATA, *PTAPE_POSITION_DATA;
+
+/* This structure is used to convert little endian ULONGs
+   to SCSI CDB big endians values. */
+typedef union _EIGHT_BYTE {
+  _ANONYMOUS_STRUCT struct {
+    UCHAR  Byte0;
+    UCHAR  Byte1;
+    UCHAR  Byte2;
+    UCHAR  Byte3;
+    UCHAR  Byte4;
+    UCHAR  Byte5;
+    UCHAR  Byte6;
+    UCHAR  Byte7;
+  } DUMMYSTRUCTNAME;
+  ULONGLONG  AsULongLong;
+} EIGHT_BYTE, *PEIGHT_BYTE;
+
+typedef union _FOUR_BYTE {
+  _ANONYMOUS_STRUCT struct {
+    UCHAR  Byte0;
+    UCHAR  Byte1;
+    UCHAR  Byte2;
+    UCHAR  Byte3;
+  } DUMMYSTRUCTNAME;
+  ULONG  AsULong;
+} FOUR_BYTE, *PFOUR_BYTE;
+
+typedef union _TWO_BYTE {
+  _ANONYMOUS_STRUCT struct {
+    UCHAR  Byte0;
+    UCHAR  Byte1;
+  } DUMMYSTRUCTNAME;
+  USHORT  AsUShort;
+} TWO_BYTE, *PTWO_BYTE;
+
+/* Byte reversing macro for converting between
+   big- and little-endian formats */
+#define REVERSE_BYTES_QUAD(Destination, Source) { \
+    PEIGHT_BYTE _val1 = (PEIGHT_BYTE)(Destination); \
+    PEIGHT_BYTE _val2 = (PEIGHT_BYTE)(Source); \
+    _val1->Byte7 = _val2->Byte0; \
+    _val1->Byte6 = _val2->Byte1; \
+    _val1->Byte5 = _val2->Byte2; \
+    _val1->Byte4 = _val2->Byte3; \
+    _val1->Byte3 = _val2->Byte4; \
+    _val1->Byte2 = _val2->Byte5; \
+    _val1->Byte1 = _val2->Byte6; \
+    _val1->Byte0 = _val2->Byte7; \
+}
+
+#define REVERSE_BYTES(Destination, Source) { \
+    PFOUR_BYTE _val1 = (PFOUR_BYTE)(Destination); \
+    PFOUR_BYTE _val2 = (PFOUR_BYTE)(Source); \
+    _val1->Byte3 = _val2->Byte0; \
+    _val1->Byte2 = _val2->Byte1; \
+    _val1->Byte1 = _val2->Byte2; \
+    _val1->Byte0 = _val2->Byte3; \
+}
+
+#define REVERSE_BYTES_SHORT(Destination, Source) { \
+  PTWO_BYTE _val1 = (PTWO_BYTE)(Destination); \
+  PTWO_BYTE _val2 = (PTWO_BYTE)(Source); \
+  _val1->Byte1 = _val2->Byte0; \
+  _val1->Byte0 = _val2->Byte1; \
+}
+
+#define REVERSE_SHORT(Short) { \
+  UCHAR _val; \
+  PTWO_BYTE _val2 = (PTWO_BYTE)(Short); \
+  _val = _val2->Byte0; \
+  _val2->Byte0 = _val2->Byte1; \
+  _val2->Byte1 = _val; \
+}
+
+#define REVERSE_LONG(Long) { \
+  UCHAR _val; \
+  PFOUR_BYTE _val2 = (PFOUR_BYTE)(Long); \
+  _val = _val2->Byte3; \
+  _val2->Byte3 = _val2->Byte0; \
+  _val2->Byte0 = _val; \
+  _val = _val2->Byte2; \
+  _val2->Byte2 = _val2->Byte1; \
+  _val2->Byte1 = _val; \
+}
+
+#define WHICH_BIT(Data, Bit) { \
+  UCHAR _val; \
+  for (_val = 0; _val < 32; _val++) { \
+    if (((Data) >> _val) == 1) { \
+      break; \
+    } \
+  } \
+  ASSERT(_val != 32); \
+  (Bit) = _val; \
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __SCSI_H */