blob: 2b8a82f07460358d7cc4892cb67c102d74753add (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
/*
* HISTORY
* $Log: scsi_tape.h,v $
* Revision 1.2 1993/01/26 18:39:08 julian
* add the 'write protected' bit in the device status struct.
*
* Revision 1.1 1992/09/26 22:10:21 julian
* Initial revision
*
*
* PATCHES MAGIC LEVEL PATCH THAT GOT US HERE
* -------------------- ----- ----------------------
* CURRENT PATCH LEVEL: 1 00098
* -------------------- ----- ----------------------
*
* 16 Feb 93 Julian Elischer ADDED for SCSI system
*
*/
/*
* SCSI tape interface description
*/
/*
* Written by Julian Elischer (julian@tfs.com)
* for TRW Financial Systems.
*
* TRW Financial Systems, in accordance with their agreement with Carnegie
* Mellon University, makes this software available to CMU to distribute
* or use in any manner that they see fit as long as this message is kept with
* the software. For this reason TFS also grants any other persons or
* organisations permission to use or modify this software.
*
* TFS supplies this software to be publicly redistributed
* on the understanding that TFS is not responsible for the correct
* functioning of this software in any circumstances.
*
*/
/*
* Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
*/
/*
* SCSI command format
*/
struct scsi_rw_tape
{
u_char op_code;
u_char fixed:1;
u_char :4;
u_char lun:3;
u_char len[3];
u_char link:1;
u_char flag:1;
u_char :6;
} rw_tape;
struct scsi_space
{
u_char op_code;
u_char code:2;
u_char :3;
u_char lun:3;
u_char number[3];
u_char link:1;
u_char flag:1;
u_char :6;
} space;
#define SP_BLKS 0
#define SP_FILEMARKS 1
#define SP_SEQ_FILEMARKS 2
#define SP_EOM 3
struct scsi_write_filemarks
{
u_char op_code;
u_char :5;
u_char lun:3;
u_char number[3];
u_char link:1;
u_char flag:1;
u_char :6;
} write_filemarks;
struct scsi_rewind
{
u_char op_code;
u_char immed:1;
u_char :4;
u_char lun:3;
u_char unused[3];
u_char link:1;
u_char flag:1;
u_char :6;
} rewind;
struct scsi_load
{
u_char op_code;
u_char immed:1;
u_char :4;
u_char lun:3;
u_char unused[2];
u_char load:1;
u_char reten:1;
u_char :6;
u_char link:1;
u_char flag:1;
u_char :6;
} load;
#define LD_UNLOAD 0
#define LD_LOAD 1
struct scsi_blk_limits
{
u_char op_code;
u_char :5;
u_char lun:3;
u_char unused[3];
u_char link:1;
u_char flag:1;
u_char :6;
} blk_limits;
/*
* Opcodes
*/
#define REWIND 0x01
#define READ_BLK_LIMITS 0x05
#define READ_COMMAND_TAPE 0x08
#define WRITE_COMMAND_TAPE 0x0a
#define WRITE_FILEMARKS 0x10
#define SPACE 0x11
#define LOAD_UNLOAD 0x1b /* same as above */
struct scsi_blk_limits_data
{
u_char reserved;
u_char max_length_2; /* Most significant */
u_char max_length_1;
u_char max_length_0; /* Least significant */
u_char min_length_1; /* Most significant */
u_char min_length_0; /* Least significant */
};
struct scsi_mode_header_tape
{
u_char data_length; /* Sense data length */
u_char medium_type;
u_char speed:4;
u_char buf_mode:3;
u_char write_protected:1;
u_char blk_desc_len;
};
#define QIC_120 0x0f
#define QIC_150 0x10
#define QIC_320 0x11
#define QIC_525 0x11
#define QIC_1320 0x12
|
