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@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@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
59struct 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
68struct 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
81struct 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
89struct 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
98struct 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
111struct 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
121struct 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
128struct 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 */
135struct 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) */
167struct 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
194struct 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
201struct 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