1 /* $NetBSD: scsi_tape.h,v 1.24 2005/12/11 12:23:50 christos 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 #define READ_POSITION 0x34
201 struct scsi_tape_read_position {
202 u_int8_t opcode;
203 u_int8_t byte1; /* set LSB to read hardware block pos */
204 u_int8_t reserved[8];
205 };
206
207 #define LOCATE 0x2B
208 struct scsi_tape_locate {
209 u_int8_t opcode;
210 u_int8_t byte2;
211 u_int8_t reserved1;
212 u_int8_t blkaddr[4];
213 u_int8_t reserved2;
214 u_int8_t partition;
215 u_int8_t control;
216 };
217
218 #define HALFINCH_800 0x01
219 #define HALFINCH_1600 0x02
220 #define HALFINCH_6250 0x03
221 #define QIC_11 0x04
222 #define QIC_24 0x05
223 #define QIC_120 0x0f
224 #define QIC_150 0x10
225 #define QIC_320 0x11
226 #define QIC_525 0x11
227 #define QIC_1320 0x12
228 #define DDS 0x13
229 #define QIC_3095 0x45
230 #define QIC_3220 0x47
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