scsi_tape.h revision 1.3
1 /* 2 * SCSI tape interface description 3 */ 4 5 /* 6 * Written by Julian Elischer (julian (at) tfs.com) 7 * for TRW Financial Systems. 8 * 9 * TRW Financial Systems, in accordance with their agreement with Carnegie 10 * Mellon University, makes this software available to CMU to distribute 11 * or use in any manner that they see fit as long as this message is kept with 12 * the software. For this reason TFS also grants any other persons or 13 * organisations permission to use or modify this software. 14 * 15 * TFS supplies this software to be publicly redistributed 16 * on the understanding that TFS is not responsible for the correct 17 * functioning of this software in any circumstances. 18 * 19 */ 20 21 /* 22 * Ported to run under 386BSD by Julian Elischer (julian (at) tfs.com) Sept 1992 23 * 24 * $Id: scsi_tape.h,v 1.3 1994/03/29 04:29:36 mycroft Exp $ 25 */ 26 #ifndef SCSI_SCSI_TAPE_H 27 #define SCSI_SCSI_TAPE_H 1 28 29 30 31 /* 32 * SCSI command formats 33 */ 34 35 36 struct scsi_rw_tape 37 { 38 u_char op_code; 39 u_char byte2; 40 #define SRWT_FIXED 0x01 41 u_char len[3]; 42 u_char control; 43 } rw_tape; 44 45 struct scsi_space 46 { 47 u_char op_code; 48 u_char byte2; 49 #define SS_CODE 0x03 50 u_char number[3]; 51 u_char control; 52 } space; 53 #define SP_BLKS 0 54 #define SP_FILEMARKS 1 55 #define SP_SEQ_FILEMARKS 2 56 #define SP_EOM 3 57 58 struct scsi_write_filemarks 59 { 60 u_char op_code; 61 u_char byte2; 62 u_char number[3]; 63 u_char control; 64 } write_filemarks; 65 66 struct scsi_rewind 67 { 68 u_char op_code; 69 u_char byte2; 70 #define SR_IMMED 0x01 71 u_char unused[3]; 72 u_char control; 73 } rewind; 74 75 struct scsi_load 76 { 77 u_char op_code; 78 u_char byte2; 79 #define SL_IMMED 0x01 80 u_char unused[2]; 81 u_char how; 82 u_char control; 83 } load; 84 #define LD_UNLOAD 0 85 #define LD_LOAD 1 86 #define LD_RETEN 2 87 88 89 struct scsi_blk_limits 90 { 91 u_char op_code; 92 u_char byte2; 93 u_char unused[3]; 94 u_char control; 95 } blk_limits; 96 97 /* 98 * Opcodes 99 */ 100 101 #define REWIND 0x01 102 #define READ_BLK_LIMITS 0x05 103 #define READ_COMMAND_TAPE 0x08 104 #define WRITE_COMMAND_TAPE 0x0a 105 #define WRITE_FILEMARKS 0x10 106 #define SPACE 0x11 107 #define LOAD_UNLOAD 0x1b /* same as above */ 108 109 110 111 struct scsi_blk_limits_data 112 { 113 u_char reserved; 114 u_char max_length_2; /* Most significant */ 115 u_char max_length_1; 116 u_char max_length_0; /* Least significant */ 117 u_char min_length_1; /* Most significant */ 118 u_char min_length_0; /* Least significant */ 119 }; 120 121 /* defines for the device specific byte in the mode select/sense header */ 122 #define SMH_DSP_SPEED 0x0F 123 #define SMH_DSP_BUFF_MODE 0x70 124 #define SMH_DSP_BUFF_MODE_OFF 0x00 125 #define SMH_DSP_BUFF_MODE_ON 0x10 126 #define SMH_DSP_BUFF_MODE_MLTI 0x20 127 #define SMH_DSP_WRITE_PROT 0x80 128 129 /* A special for the CIPHER ST150S(old drive) */ 130 struct blk_desc_cipher 131 { 132 u_char density; 133 u_char nblocks[3]; 134 u_char reserved; 135 u_char blklen[3]; 136 u_char other; 137 #define ST150_SEC 0x01 /* soft error count */ 138 #define SR150_AUI 0x02 /* autoload inhibit */ 139 }; 140 141 142 143 /********************************************************************** 144 from the scsi2 spec 145 Value Tracks Density(bpi) Code Type Reference Note 146 0x1 9 800 NRZI R X3.22-1983 2 147 0x2 9 1600 PE R X3.39-1986 2 148 0x3 9 6250 GCR R X3.54-1986 2 149 0x5 4/9 8000 GCR C X3.136-1986 1 150 0x6 9 3200 PE R X3.157-1987 2 151 0x7 4 6400 IMFM C X3.116-1986 1 152 0x8 4 8000 GCR CS X3.158-1986 1 153 0x9 18 37871 GCR C X3B5/87-099 2 154 0xA 22 6667 MFM C X3B5/86-199 1 155 0xB 4 1600 PE C X3.56-1986 1 156 0xC 24 12690 GCR C HI-TC1 1,5 157 0xD 24 25380 GCR C HI-TC2 1,5 158 0xF 15 10000 GCR C QIC-120 1,5 159 0x10 18 10000 GCR C QIC-150 1,5 160 0x11 26 16000 GCR C QIC-320(525?) 1,5 161 0x12 30 51667 RLL C QIC-1350 1,5 162 0x13 1 61000 DDS CS X3B5/88-185A 4 163 0x14 1 43245 RLL CS X3.202-1991 4 164 0x15 1 45434 RLL CS ECMA TC17 4 165 0x16 48 10000 MFM C X3.193-1990 1 166 0x17 48 42500 MFM C X3B5/91-174 1 167 168 where Code means: 169 NRZI Non Return to Zero, change on ones 170 GCR Group Code Recording 171 PE Phase Encoded 172 IMFM Inverted Modified Frequency Modulation 173 MFM Modified Frequency Modulation 174 DDS Dat Data Storage 175 RLL Run Length Encoding 176 177 where Type means: 178 R Real-to-Real 179 C Cartridge 180 CS cassette 181 182 where Notes means: 183 1 Serial Recorded 184 2 Parallel Recorded 185 3 Old format know as QIC-11 186 4 Helical Scan 187 5 Not ANSI standard, rather industry standard. 188 189 ********************************************************************/ 190 191 #define HALFINCH_800 0x01 192 #define HALFINCH_1600 0x02 193 #define HALFINCH_6250 0x03 194 #define QIC_11 0x04 /* from Archive 150S Theory of Op. XXX */ 195 #define QIC_24 0x05 /* may be bad, works for CIPHER ST150S XXX */ 196 #define QIC_120 0x0f 197 #define QIC_150 0x10 198 #define QIC_320 0x11 199 #define QIC_525 0x11 200 #define QIC_1320 0x12 201 #define DDS 0x13 202 #define DAT_1 0x13 203 204 #endif /*SCSI_SCSI_TAPE_H*/ 205
Indexes created Fri Sep 26 20:09:58 GMT 2025