1 /* $NetBSD: scsi_tape.h,v 1.25 2008/04/28 20:23:57 martin 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Originally written by Julian Elischer (julian (at) tfs.com) 34 * for TRW Financial Systems. 35 * 36 * TRW Financial Systems, in accordance with their agreement with Carnegie 37 * Mellon University, makes this software available to CMU to distribute 38 * or use in any manner that they see fit as long as this message is kept with 39 * the software. For this reason TFS also grants any other persons or 40 * organisations permission to use or modify this software. 41 * 42 * TFS supplies this software to be publicly redistributed 43 * on the understanding that TFS is not responsible for the correct 44 * functioning of this software in any circumstances. 45 * 46 * Ported to run under 386BSD by Julian Elischer (julian (at) tfs.com) Sept 1992 47 */ 48 49 /* 50 * SCSI tape interface description 51 */ 52 53 /* 54 * SCSI command formats 55 */ 56 57 #define READ 0x08 58 #define WRITE 0x0a 59 struct scsi_rw_tape { 60 u_int8_t opcode; 61 u_int8_t byte2; 62 #define SRW_FIXED 0x01 63 u_int8_t len[3]; 64 u_int8_t control; 65 }; 66 67 #define SPACE 0x11 68 struct scsi_space { 69 u_int8_t opcode; 70 u_int8_t byte2; 71 #define SS_CODE 0x03 72 #define SP_BLKS 0x00 73 #define SP_FILEMARKS 0x01 74 #define SP_SEQ_FILEMARKS 0x02 75 #define SP_EOM 0x03 76 u_int8_t number[3]; 77 u_int8_t control; 78 }; 79 80 #define WRITE_FILEMARKS 0x10 81 struct scsi_write_filemarks { 82 u_int8_t opcode; 83 u_int8_t byte2; 84 u_int8_t number[3]; 85 u_int8_t control; 86 }; 87 88 #define REWIND 0x01 89 struct scsi_rewind { 90 u_int8_t opcode; 91 u_int8_t byte2; 92 #define SR_IMMED 0x01 93 u_int8_t unused[3]; 94 u_int8_t control; 95 }; 96 97 #define LOAD 0x1b 98 struct scsi_load { 99 u_int8_t opcode; 100 u_int8_t byte2; 101 #define SL_IMMED 0x01 102 u_int8_t unused[2]; 103 u_int8_t how; 104 #define LD_UNLOAD 0x00 105 #define LD_LOAD 0x01 106 #define LD_RETENSION 0x02 107 u_int8_t control; 108 }; 109 110 #define ERASE 0x19 111 struct scsi_erase { 112 u_int8_t opcode; 113 u_int8_t byte2; 114 #define SE_LONG 0x01 115 #define SE_IMMED 0x02 116 u_int8_t unused[3]; 117 u_int8_t control; 118 }; 119 120 #define READ_BLOCK_LIMITS 0x05 121 struct scsi_block_limits { 122 u_int8_t opcode; 123 u_int8_t byte2; 124 u_int8_t unused[3]; 125 u_int8_t control; 126 }; 127 128 struct scsi_block_limits_data { 129 u_int8_t reserved; 130 u_int8_t max_length[3]; /* Most significant */ 131 u_int8_t min_length[2]; /* Most significant */ 132 }; 133 134 /* See SCSI-II spec 9.3.3.1 */ 135 struct scsi_tape_dev_conf_page { 136 u_int8_t pagecode; /* 0x10 */ 137 u_int8_t pagelength; /* 0x0e */ 138 u_int8_t byte2; 139 #define SMT_CAP 0x40 /* change active partition */ 140 #define SMT_CAF 0x20 /* change active format */ 141 #define SMT_AFMASK 0x1f /* active format mask */ 142 u_int8_t active_partition; 143 u_int8_t wb_full_ratio; 144 u_int8_t rb_empty_ratio; 145 u_int8_t wrdelay_time[2]; 146 u_int8_t byte8; 147 #define SMT_DBR 0x80 /* data buffer recovery */ 148 #define SMT_BIS 0x40 /* block identifiers supported */ 149 #define SMT_RSMK 0x20 /* report setmarks */ 150 #define SMT_AVC 0x10 /* automatic velocity control */ 151 #define SMT_SOCF_MASK 0xc0 /* stop on consecutive formats */ 152 #define SMT_RBO 0x20 /* recover buffer order */ 153 #define SMT_REW 0x10 /* report early warning */ 154 u_int8_t gap_size; 155 u_int8_t byte10; 156 #define SMT_EODDEFINED 0xe0 /* EOD defined */ 157 #define SMT_EEG 0x10 /* enable EOD generation */ 158 #define SMT_SEW 0x80 /* synchronize at early warning */ 159 u_int8_t ew_bufsize[3]; 160 u_int8_t sel_comp_alg; 161 #define SMT_COMP_NONE 0x00 162 #define SMT_COMP_DEFAULT 0x01 163 u_int8_t reserved; 164 }; 165 166 /* from SCSI-3: SSC-Rev10 (6/97) */ 167 struct scsi_tape_dev_compression_page { 168 u_int8_t pagecode; /* 0x0f */ 169 u_int8_t pagelength; /* 0x0e */ 170 u_int8_t dce_dcc; 171 #define DCP_DCE 0x80 /* enable compression */ 172 #define DCP_DCC 0x40 /* compression capable */ 173 u_int8_t dde_red; 174 #define DCP_DDE 0x80 /* enable decompression */ 175 /* There's a lot of gup about bits 5,6 for reporting exceptions */ 176 /* in transitions between compressed and uncompressed data- but */ 177 /* mostly we want the default (0), which is to report a MEDIUM */ 178 /* ERROR when a read transitions into data that can't be de- */ 179 /* compressed */ 180 u_int8_t comp_alg[4]; /* compression algorithm */ 181 u_int8_t decomp_alg[4]; /* de-"" */ 182 u_int8_t reserved[4]; 183 }; 184 185 /* defines for the device specific byte in the mode select/sense header */ 186 #define SMH_DSP_SPEED 0x0F 187 #define SMH_DSP_BUFF_MODE 0x70 188 #define SMH_DSP_BUFF_MODE_OFF 0x00 189 #define SMH_DSP_BUFF_MODE_ON 0x10 190 #define SMH_DSP_BUFF_MODE_MLTI 0x20 191 #define SMH_DSP_WRITE_PROT 0x80 192 193 #define READ_POSITION 0x34 194 struct scsi_tape_read_position { 195 u_int8_t opcode; 196 u_int8_t byte1; /* set LSB to read hardware block pos */ 197 u_int8_t reserved[8]; 198 }; 199 200 #define LOCATE 0x2B 201 struct scsi_tape_locate { 202 u_int8_t opcode; 203 u_int8_t byte2; 204 u_int8_t reserved1; 205 u_int8_t blkaddr[4]; 206 u_int8_t reserved2; 207 u_int8_t partition; 208 u_int8_t control; 209 }; 210 211 #define HALFINCH_800 0x01 212 #define HALFINCH_1600 0x02 213 #define HALFINCH_6250 0x03 214 #define QIC_11 0x04 215 #define QIC_24 0x05 216 #define QIC_120 0x0f 217 #define QIC_150 0x10 218 #define QIC_320 0x11 219 #define QIC_525 0x11 220 #define QIC_1320 0x12 221 #define DDS 0x13 222 #define QIC_3095 0x45 223 #define QIC_3220 0x47 224
Indexes created Sat Sep 20 22:09:52 GMT 2025