mtx.h

通用SCSI设备备份/读写程序

  unsigned char VendorIdentification[8];		/* Bytes 8-15 */
  unsigned char ProductIdentification[16];		/* Bytes 16-31 */
  unsigned char ProductRevisionLevel[4];		/* Bytes 32-35 */
  unsigned char FullProductRevisionLevel[19];           /* bytes 36-54 */
  unsigned char VendorFlags;                            /* byte 55 */
}
Inquiry_T;

/* Hockey Pux may define these. If so, *UN*define them. */
#ifdef ILI
#undef ILI
#endif

#ifdef EOM
#undef EOM
#endif

typedef struct RequestSense
{
#ifdef LITTLE_ENDIAN_BITFIELDS
  unsigned char ErrorCode:7;				/* Byte 0 Bits 0-6 */
  boolean Valid:1;					/* Byte 0 Bit 7 */
#else
  boolean Valid:1;					/* Byte 0 Bit 7 */
  unsigned char ErrorCode:7;				/* Byte 0 Bits 0-6 */
#endif
  unsigned char SegmentNumber;				/* Byte 1 */
#ifdef LITTLE_ENDIAN_BITFIELDS
  unsigned char SenseKey:4;				/* Byte 2 Bits 0-3 */
  unsigned char :1;					/* Byte 2 Bit 4 */
  boolean ILI:1;					/* Byte 2 Bit 5 */
  boolean EOM:1;					/* Byte 2 Bit 6 */
  boolean Filemark:1;					/* Byte 2 Bit 7 */
#else
  boolean Filemark:1;					/* Byte 2 Bit 7 */
  boolean EOM:1;					/* Byte 2 Bit 6 */
  boolean ILI:1;					/* Byte 2 Bit 5 */
  unsigned char :1;					/* Byte 2 Bit 4 */
  unsigned char SenseKey:4;				/* Byte 2 Bits 0-3 */
#endif
  unsigned char Information[4];				/* Bytes 3-6 */
  unsigned char AdditionalSenseLength;			/* Byte 7 */
  unsigned char CommandSpecificInformation[4];		/* Bytes 8-11 */
  unsigned char AdditionalSenseCode;			/* Byte 12 */
  unsigned char AdditionalSenseCodeQualifier;		/* Byte 13 */
  unsigned char :8;					/* Byte 14 */
#ifdef LITTLE_ENDIAN_BITFIELDS
  unsigned char BitPointer:3;                           /* Byte 15 */
  boolean BPV:1;
  unsigned char :2;
  boolean CommandData :1;
  boolean SKSV:1;      
#else
  boolean SKSV:1;      
  boolean CommandData :1;
  unsigned char :2;
  boolean BPV:1;
  unsigned char BitPointer:3;                           /* Byte 15 */
#endif
  unsigned char FieldData[2];       	 		/* Byte 16,17 */
}
RequestSense_T;

/* Okay, now for the element status mode sense page (0x1d): */

typedef struct ElementModeSensePageHeader {
  unsigned char PageCode;  /* byte 0 */
  unsigned char ParameterLengthList;  /* byte 1; */
  unsigned char MediumTransportStartHi; /* byte 2,3 */
  unsigned char MediumTransportStartLo;
  unsigned char NumMediumTransportHi;   /* byte 4,5 */
  unsigned char NumMediumTransportLo;   /* byte 4,5 */
  unsigned char StorageStartHi;         /* byte 6,7 */
  unsigned char StorageStartLo;         /* byte 6,7 */
  unsigned char NumStorageHi;           /* byte 8,9 */
  unsigned char NumStorageLo;           /* byte 8,9 */
  unsigned char ImportExportStartHi;    /* byte 10,11 */
  unsigned char ImportExportStartLo;    /* byte 10,11 */
  unsigned char NumImportExportHi;      /* byte 12,13 */
  unsigned char NumImportExportLo;      /* byte 12,13 */
  unsigned char DataTransferStartHi;    /* byte 14,15 */
  unsigned char DataTransferStartLo;    /* byte 14,15 */
  unsigned char NumDataTransferHi;      /* byte 16,17 */
  unsigned char NumDataTransferLo;      /* byte 16,17 */
  unsigned char Reserved1;             /* byte 18, 19 */
  unsigned char Reserved2;             /* byte 18, 19 */
} ElementModeSensePage_T;

typedef struct ElementModeSenseHeader {
  int MaxReadElementStatusData; /* 'nuff for all of below. */
  int NumElements;              /* total # of elements. */
  int MediumTransportStart;
  int NumMediumTransport;
  int StorageStart;
  int NumStorage;
  int ImportExportStart;
  int NumImportExport;
  int DataTransferStart;
  int NumDataTransfer;
} ElementModeSense_T;


typedef enum ElementTypeCode
{
  AllElementTypes =		0,
  MediumTransportElement =	1,
  StorageElement =		2,
  ImportExportElement =		3,
  DataTransferElement =		4
}
ElementTypeCode_T;


typedef struct ElementStatusDataHeader
{
  unsigned char FirstElementAddressReported[2];		/* Bytes 0-1 */
  unsigned char NumberOfElementsAvailable[2];		/* Bytes 2-3 */
  unsigned char :8;					/* Byte 4 */
  unsigned char ByteCountOfReportAvailable[3];		/* Bytes 5-7 */
}
ElementStatusDataHeader_T;


typedef struct ElementStatusPage
{
  ElementTypeCode_T ElementTypeCode:8;			/* Byte 0 */
#ifdef LITTLE_ENDIAN_BITFIELDS
  unsigned char :6;					/* Byte 1 Bits 0-5 */
  boolean AVolTag:1;					/* Byte 1 Bit 6 */
  boolean PVolTag:1;					/* Byte 1 Bit 7 */
#else
  boolean PVolTag:1;					/* Byte 1 Bit 7 */
  boolean AVolTag:1;					/* Byte 1 Bit 6 */
  unsigned char :6;					/* Byte 1 Bits 0-5 */
#endif
  unsigned char ElementDescriptorLength[2];		/* Bytes 2-3 */
  unsigned char :8;					/* Byte 4 */
  unsigned char ByteCountOfDescriptorDataAvailable[3];	/* Bytes 5-7 */
}
ElementStatusPage_T;

typedef struct Element2StatusPage
{
  ElementTypeCode_T ElementTypeCode:8;			/* Byte 0 */
  unsigned char VolBits ; /* byte 1 */
#define E2_PVOLTAG 0x80
#define E2_AVOLTAG 0x40
  unsigned char ElementDescriptorLength[2];		/* Bytes 2-3 */
  unsigned char :8;					/* Byte 4 */
  unsigned char ByteCountOfDescriptorDataAvailable[3];	/* Bytes 5-7 */
}
Element2StatusPage_T;



typedef struct TransportElementDescriptorShort
{
  unsigned char ElementAddress[2];			/* Bytes 0-1 */
#ifdef LITTLE_ENDIAN_BITFIELDS
  boolean Full:1;					/* Byte 2 Bit 0 */
  unsigned char :1;					/* Byte 2 Bit 1 */
  boolean Except:1;					/* Byte 2 Bit 2 */
  unsigned char :5;					/* Byte 2 Bits 3-7 */
#else
  unsigned char :5;					/* Byte 2 Bits 3-7 */
  boolean Except:1;					/* Byte 2 Bit 2 */
  unsigned char :1;					/* Byte 2 Bit 1 */
  boolean Full:1;					/* Byte 2 Bit 0 */
#endif
  unsigned char :8;					/* Byte 3 */
  unsigned char AdditionalSenseCode;			/* Byte 4 */
  unsigned char AdditionalSenseCodeQualifier;		/* Byte 5 */
  unsigned char :8;					/* Byte 6 */
  unsigned char :8;					/* Byte 7 */
  unsigned char :8;					/* Byte 8 */
#ifdef LITTLE_ENDIAN_BITFIELDS
  unsigned char :6;					/* Byte 9 Bits 0-5 */
  boolean SValid:1;					/* Byte 9 Bit 6 */
  boolean Invert:1;					/* Byte 9 Bit 7 */
#else
  boolean Invert:1;					/* Byte 9 Bit 7 */
  boolean SValid:1;					/* Byte 9 Bit 6 */
  unsigned char :6;					/* Byte 9 Bits 0-5 */
#endif
  unsigned char SourceStorageElementAddress[2];		/* Bytes 10-11 */
}
TransportElementDescriptorShort_T;


typedef struct TransportElementDescriptor
{
  unsigned char ElementAddress[2];			/* Bytes 0-1 */
#ifdef LITTLE_ENDIAN_BITFIELDS
  boolean Full:1;					/* Byte 2 Bit 0 */
  unsigned char :1;					/* Byte 2 Bit 1 */
  boolean Except:1;					/* Byte 2 Bit 2 */
  unsigned char :5;					/* Byte 2 Bits 3-7 */
#else
  unsigned char :5;					/* Byte 2 Bits 3-7 */
  boolean Except:1;					/* Byte 2 Bit 2 */
  unsigned char :1;					/* Byte 2 Bit 1 */
  boolean Full:1;					/* Byte 2 Bit 0 */
#endif
  unsigned char :8;					/* Byte 3 */
  unsigned char AdditionalSenseCode;			/* Byte 4 */
  unsigned char AdditionalSenseCodeQualifier;		/* Byte 5 */
  unsigned char :8;					/* Byte 6 */
  unsigned char :8;					/* Byte 7 */
  unsigned char :8;					/* Byte 8 */
#ifdef LITTLE_ENDIAN_BITFIELDS
  unsigned char :6;					/* Byte 9 Bits 0-5 */
  boolean SValid:1;					/* Byte 9 Bit 6 */
  boolean Invert:1;					/* Byte 9 Bit 7 */
#else
  boolean Invert:1;					/* Byte 9 Bit 7 */
  boolean SValid:1;					/* Byte 9 Bit 6 */
  unsigned char :6;					/* Byte 9 Bits 0-5 */
#endif
  unsigned char SourceStorageElementAddress[2];		/* Bytes 10-11 */
  unsigned char PrimaryVolumeTag[36];          /* barcode */
  unsigned char AlternateVolumeTag[36];        
}
TransportElementDescriptor_T;



/* Now for element status data; */

typedef unsigned char barcode[37];

typedef struct ElementStatus {

  int StorageElementCount;
  int ImportExportCount;
  int DataTransferElementCount;
  int *DataTransferElementAddress;  /* array. */
  int *DataTransferElementSourceStorageElementNumber; /* array */
  barcode *DataTransferPrimaryVolumeTag; /* array. */
  barcode *DataTransferAlternateVolumeTag; /* array. */
  barcode *PrimaryVolumeTag;  /* array */
  barcode *AlternateVolumeTag; /* array */
  int *StorageElementAddress; /* array */
  boolean *StorageElementIsImportExport; /* array */

  int TransportElementAddress;  /* assume only one of those... */

  boolean *DataTransferElementFull; /* array */
  boolean *StorageElementFull;  /* array */

} ElementStatus_T;


/* Now for the SCSI ID and LUN information: */
typedef struct scsi_id {
  int id;
  int lun;
} scsi_id_t;

#define MEDIUM_CHANGER_TYPE 8  /* what type bits are set for medium changers. */

#endif  /* of multi-include protection. */