1 /* $NetBSD: scsi_tape.h,v 1.20 2001/04/25 17:53:39 bouyer Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Originally written by Julian Elischer (julian@tfs.com) 41 * for TRW Financial Systems. 42 * 43 * TRW Financial Systems, in accordance with their agreement with Carnegie 44 * Mellon University, makes this software available to CMU to distribute 45 * or use in any manner that they see fit as long as this message is kept with 46 * the software. For this reason TFS also grants any other persons or 47 * organisations permission to use or modify this software. 48 * 49 * TFS supplies this software to be publicly redistributed 50 * on the understanding that TFS is not responsible for the correct 51 * functioning of this software in any circumstances. 52 * 53 * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992 54 */ 55 56 /* 57 * SCSI tape interface description 58 */ 59 60 /* 61 * SCSI command formats 62 */ 63 64 #define READ 0x08 65 #define WRITE 0x0a 66 struct scsi_rw_tape { 67 u_int8_t opcode; 68 u_int8_t byte2; 69 #define SRW_FIXED 0x01 70 u_int8_t len[3]; 71 u_int8_t control; 72 }; 73 74 #define SPACE 0x11 75 struct scsi_space { 76 u_int8_t opcode; 77 u_int8_t byte2; 78 #define SS_CODE 0x03 79 #define SP_BLKS 0x00 80 #define SP_FILEMARKS 0x01 81 #define SP_SEQ_FILEMARKS 0x02 82 #define SP_EOM 0x03 83 u_int8_t number[3]; 84 u_int8_t control; 85 }; 86 87 #define WRITE_FILEMARKS 0x10 88 struct scsi_write_filemarks { 89 u_int8_t opcode; 90 u_int8_t byte2; 91 u_int8_t number[3]; 92 u_int8_t control; 93 }; 94 95 #define REWIND 0x01 96 struct scsi_rewind { 97 u_int8_t opcode; 98 u_int8_t byte2; 99 #define SR_IMMED 0x01 100 u_int8_t unused[3]; 101 u_int8_t control; 102 }; 103 104 #define LOAD 0x1b 105 struct scsi_load { 106 u_int8_t opcode; 107 u_int8_t byte2; 108 #define SL_IMMED 0x01 109 u_int8_t unused[2]; 110 u_int8_t how; 111 #define LD_UNLOAD 0x00 112 #define LD_LOAD 0x01 113 #define LD_RETENSION 0x02 114 u_int8_t control; 115 }; 116 117 #define ERASE 0x19 118 struct scsi_erase { 119 u_int8_t opcode; 120 u_int8_t byte2; 121 #define SE_LONG 0x01 122 #define SE_IMMED 0x02 123 u_int8_t unused[3]; 124 u_int8_t control; 125 }; 126 127 #define READ_BLOCK_LIMITS 0x05 128 struct scsi_block_limits { 129 u_int8_t opcode; 130 u_int8_t byte2; 131 u_int8_t unused[3]; 132 u_int8_t control; 133 }; 134 135 struct scsi_block_limits_data { 136 u_int8_t reserved; 137 u_int8_t max_length[3]; /* Most significant */ 138 u_int8_t min_length[2]; /* Most significant */ 139 }; 140 141 /* See SCSI-II spec 9.3.3.1 */ 142 struct scsi_tape_dev_conf_page { 143 u_int8_t pagecode; /* 0x10 */ 144 u_int8_t pagelength; /* 0x0e */ 145 u_int8_t byte2; 146 #define SMT_CAP 0x40 /* change active partition */ 147 #define SMT_CAF 0x20 /* change active format */ 148 #define SMT_AFMASK 0x1f /* active format mask */ 149 u_int8_t active_partition; 150 u_int8_t wb_full_ratio; 151 u_int8_t rb_empty_ratio; 152 u_int8_t wrdelay_time[2]; 153 u_int8_t byte8; 154 #define SMT_DBR 0x80 /* data buffer recovery */ 155 #define SMT_BIS 0x40 /* block identifiers supported */ 156 #define SMT_RSMK 0x20 /* report setmarks */ 157 #define SMT_AVC 0x10 /* automatic velocity control */ 158 #define SMT_SOCF_MASK 0xc0 /* stop on consecutive formats */ 159 #define SMT_RBO 0x20 /* recover buffer order */ 160 #define SMT_REW 0x10 /* report early warning */ 161 u_int8_t gap_size; 162 u_int8_t byte10; 163 #define SMT_EODDEFINED 0xe0 /* EOD defined */ 164 #define SMT_EEG 0x10 /* enable EOD generation */ 165 #define SMT_SEW 0x80 /* synchronize at early warning */ 166 u_int8_t ew_bufsize[3]; 167 u_int8_t sel_comp_alg; 168 #define SMT_COMP_NONE 0x00 169 #define SMT_COMP_DEFAULT 0x01 170 u_int8_t reserved; 171 }; 172 173 /* from SCSI-3: SSC-Rev10 (6/97) */ 174 struct scsi_tape_dev_compression_page { 175 u_int8_t pagecode; /* 0x0f */ 176 u_int8_t pagelength; /* 0x0e */ 177 u_int8_t dce_dcc; 178 #define DCP_DCE 0x80 /* enable compression */ 179 #define DCP_DCC 0x40 /* compression capable */ 180 u_int8_t dde_red; 181 #define DCP_DDE 0x80 /* enable decompression */ 182 /* There's a lot of gup about bits 5,6 for reporting exceptions */ 183 /* in transitions between compressed and uncompressed data- but */ 184 /* mostly we want the default (0), which is to report a MEDIUM */ 185 /* ERROR when a read transitions into data that can't be de- */ 186 /* compressed */ 187 u_int8_t comp_alg[4]; /* compression algorithm */ 188 u_int8_t decomp_alg[4]; /* de-"" */ 189 u_int8_t reserved[4]; 190 }; 191 192 /* defines for the device specific byte in the mode select/sense header */ 193 #define SMH_DSP_SPEED 0x0F 194 #define SMH_DSP_BUFF_MODE 0x70 195 #define SMH_DSP_BUFF_MODE_OFF 0x00 196 #define SMH_DSP_BUFF_MODE_ON 0x10 197 #define SMH_DSP_BUFF_MODE_MLTI 0x20 198 #define SMH_DSP_WRITE_PROT 0x80 199 200 /* A special for the CIPHER ST150S(old drive) */ 201 struct block_desc_cipher { 202 u_int8_t density; 203 u_int8_t nblocks[3]; 204 u_int8_t reserved; 205 u_int8_t blklen[3]; 206 u_int8_t other; 207 #define ST150_SEC 0x01 /* soft error count */ 208 #define SR150_AUI 0x02 /* autoload inhibit */ 209 }; 210 211 212 #define READ_POSITION 0x34 213 struct scsi_tape_read_position { 214 u_int8_t opcode; /* READ_POSITION */ 215 u_int8_t byte1; /* set LSB to read hardware block pos */ 216 u_int8_t reserved[8]; 217 }; 218 219 #define LOCATE 0x2B 220 struct scsi_tape_locate { 221 u_int8_t opcode; 222 u_int8_t byte2; 223 u_int8_t reserved1; 224 u_int8_t blkaddr[4]; 225 u_int8_t reserved2; 226 u_int8_t partition; 227 u_int8_t control; 228 }; 229 230 #define HALFINCH_800 0x01 231 #define HALFINCH_1600 0x02 232 #define HALFINCH_6250 0x03 233 #define QIC_11 0x04 /* from Archive 150S Theory of Op. XXX */ 234 #define QIC_24 0x05 /* may be bad, works for CIPHER ST150S XXX */ 235 #define QIC_120 0x0f 236 #define QIC_150 0x10 237 #define QIC_320 0x11 238 #define QIC_525 0x11 239 #define QIC_1320 0x12 240 #define DDS 0x13 241 #define DAT_1 0x13 242 #define QIC_3095 0x45 243 #define QIC_3220 0x47 244