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scsi_tape.h revision 1.2 
      1  1.1  cgd /*
      2  1.2  cgd  * SCSI tape interface description
      3  1.1  cgd  *
      4  1.1  cgd  * Written by Julian Elischer (julian (at) tfs.com)
      5  1.1  cgd  * for TRW Financial Systems.
      6  1.1  cgd  *
      7  1.1  cgd  * TRW Financial Systems, in accordance with their agreement with Carnegie
      8  1.1  cgd  * Mellon University, makes this software available to CMU to distribute
      9  1.1  cgd  * or use in any manner that they see fit as long as this message is kept with
     10  1.1  cgd  * the software. For this reason TFS also grants any other persons or
     11  1.1  cgd  * organisations permission to use or modify this software.
     12  1.1  cgd  *
     13  1.1  cgd  * TFS supplies this software to be publicly redistributed
     14  1.1  cgd  * on the understanding that TFS is not responsible for the correct
     15  1.1  cgd  * functioning of this software in any circumstances.
     16  1.1  cgd  *
     17  1.2  cgd  *	$Id: scsi_tape.h,v 1.2 1993/05/20 03:46:34 cgd Exp $
     18  1.1  cgd  */
     19  1.1  cgd 
     20  1.1  cgd /*
     21  1.1  cgd  * Ported to run under 386BSD by Julian Elischer (julian (at) tfs.com) Sept 1992
     22  1.1  cgd  */
     23  1.1  cgd 
     24  1.1  cgd /*
     25  1.1  cgd  * SCSI command format
     26  1.1  cgd  */
     27  1.1  cgd 
     28  1.1  cgd 
     29  1.1  cgd struct scsi_rw_tape
     30  1.1  cgd {
     31  1.1  cgd 	u_char	op_code;
     32  1.1  cgd 	u_char	fixed:1;
     33  1.1  cgd 	u_char	:4;
     34  1.1  cgd 	u_char	lun:3;
     35  1.1  cgd 	u_char	len[3];
     36  1.1  cgd 	u_char	link:1;
     37  1.1  cgd 	u_char	flag:1;
     38  1.1  cgd 	u_char	:6;
     39  1.1  cgd } rw_tape;
     40  1.1  cgd 
     41  1.1  cgd struct scsi_space
     42  1.1  cgd {
     43  1.1  cgd 	u_char	op_code;
     44  1.1  cgd 	u_char	code:2;
     45  1.1  cgd 	u_char	:3;
     46  1.1  cgd 	u_char	lun:3;
     47  1.1  cgd 	u_char	number[3];
     48  1.1  cgd 	u_char	link:1;
     49  1.1  cgd 	u_char	flag:1;
     50  1.1  cgd 	u_char	:6;
     51  1.1  cgd } space;
     52  1.1  cgd #define SP_BLKS	0
     53  1.1  cgd #define SP_FILEMARKS 1
     54  1.1  cgd #define SP_SEQ_FILEMARKS 2
     55  1.1  cgd #define	SP_EOM	3
     56  1.1  cgd 
     57  1.1  cgd struct scsi_write_filemarks
     58  1.1  cgd {
     59  1.1  cgd 	u_char	op_code;
     60  1.1  cgd 	u_char	:5;
     61  1.1  cgd 	u_char	lun:3;
     62  1.1  cgd 	u_char	number[3];
     63  1.1  cgd 	u_char	link:1;
     64  1.1  cgd 	u_char	flag:1;
     65  1.1  cgd 	u_char	:6;
     66  1.1  cgd } write_filemarks;
     67  1.1  cgd 
     68  1.1  cgd struct scsi_rewind
     69  1.1  cgd {
     70  1.1  cgd 	u_char	op_code;
     71  1.1  cgd 	u_char	immed:1;
     72  1.1  cgd 	u_char	:4;
     73  1.1  cgd 	u_char	lun:3;
     74  1.1  cgd 	u_char	unused[3];
     75  1.1  cgd 	u_char	link:1;
     76  1.1  cgd 	u_char	flag:1;
     77  1.1  cgd 	u_char	:6;
     78  1.1  cgd } rewind;
     79  1.1  cgd 
     80  1.1  cgd struct scsi_load
     81  1.1  cgd {
     82  1.1  cgd 	u_char	op_code;
     83  1.1  cgd 	u_char	immed:1;
     84  1.1  cgd 	u_char	:4;
     85  1.1  cgd 	u_char	lun:3;
     86  1.1  cgd 	u_char	unused[2];
     87  1.1  cgd 	u_char	load:1;
     88  1.1  cgd 	u_char	reten:1;
     89  1.1  cgd 	u_char	:6;
     90  1.1  cgd 	u_char	link:1;
     91  1.1  cgd 	u_char	flag:1;
     92  1.1  cgd 	u_char	:6;
     93  1.1  cgd } load;
     94  1.1  cgd #define LD_UNLOAD 0
     95  1.1  cgd #define LD_LOAD 1
     96  1.1  cgd 
     97  1.1  cgd struct scsi_blk_limits
     98  1.1  cgd {
     99  1.1  cgd 	u_char	op_code;
    100  1.1  cgd 	u_char	:5;
    101  1.1  cgd 	u_char	lun:3;
    102  1.1  cgd 	u_char	unused[3];
    103  1.1  cgd 	u_char	link:1;
    104  1.1  cgd 	u_char	flag:1;
    105  1.1  cgd 	u_char	:6;
    106  1.1  cgd } blk_limits;
    107  1.1  cgd 
    108  1.1  cgd /*
    109  1.1  cgd  * Opcodes
    110  1.1  cgd  */
    111  1.1  cgd 
    112  1.1  cgd #define REWIND			0x01
    113  1.1  cgd #define	READ_BLK_LIMITS		0x05
    114  1.1  cgd #define	READ_COMMAND_TAPE	0x08
    115  1.1  cgd #define WRITE_COMMAND_TAPE	0x0a
    116  1.1  cgd #define	WRITE_FILEMARKS		0x10
    117  1.1  cgd #define	SPACE			0x11
    118  1.1  cgd #define LOAD_UNLOAD		0x1b /* same as above */
    119  1.1  cgd 
    120  1.1  cgd 
    121  1.1  cgd 
    122  1.1  cgd struct scsi_blk_limits_data
    123  1.1  cgd {
    124  1.1  cgd 	u_char	reserved;
    125  1.1  cgd 	u_char	max_length_2;	/* Most significant */
    126  1.1  cgd 	u_char	max_length_1;
    127  1.1  cgd 	u_char	max_length_0;	/* Least significant */
    128  1.1  cgd 	u_char	min_length_1;	/* Most significant */
    129  1.1  cgd 	u_char	min_length_0;	/* Least significant */
    130  1.1  cgd };
    131  1.1  cgd 
    132  1.1  cgd struct	scsi_mode_header_tape
    133  1.1  cgd {
    134  1.1  cgd 	u_char  data_length;    /* Sense data length */
    135  1.1  cgd 	u_char  medium_type;
    136  1.1  cgd 	u_char	speed:4;
    137  1.1  cgd 	u_char	buf_mode:3;
    138  1.1  cgd 	u_char	write_protected:1;
    139  1.1  cgd 	u_char  blk_desc_len;
    140  1.1  cgd };
    141  1.1  cgd 
    142  1.1  cgd 
    143  1.1  cgd #define QIC_120     0x0f
    144  1.1  cgd #define QIC_150     0x10
    145  1.1  cgd #define QIC_320     0x11
    146  1.1  cgd #define QIC_525     0x11
    147  1.1  cgd #define QIC_1320     0x12
    148  1.1  cgd 
    149  1.1  cgd 
    150