1
2 #ifndef _ST_H
3 #define _ST_H
4
5
6
7
8 #ifndef _SCSI_H
9 #include "scsi.h"
10 #endif
11
12
13 typedef struct {
14 unsigned char in_use;
15 unsigned char dma;
16 int buffer_size;
17 int buffer_blocks;
18 int buffer_bytes;
19 int read_pointer;
20 int writing;
21 int last_result;
22 int last_result_fatal;
23 unsigned char *b_data;
24 int orig_size;
25 unsigned char *orig_b_data;
26 } ST_buffer;
27
28
29
30 typedef struct {
31 unsigned char defined;
32 unsigned char do_async_writes;
33 unsigned char do_buffer_writes;
34 unsigned char do_read_ahead;
35 unsigned char defaults_for_writes;
36 unsigned char default_compression;
37 short default_density;
38 int default_blksize;
39 } ST_mode;
40
41 #define ST_NBR_MODE_BITS 2
42 #define ST_NBR_MODES (1 << ST_NBR_MODE_BITS)
43 #define ST_MODE_SHIFT (7 - ST_NBR_MODE_BITS)
44 #define ST_MODE_MASK ((ST_NBR_MODES - 1) << ST_MODE_SHIFT)
45
46
47 typedef struct {
48 kdev_t devt;
49 unsigned capacity;
50 struct wait_queue * waiting;
51 Scsi_Device* device;
52 Scsi_Cmnd SCpnt;
53 struct semaphore sem;
54 ST_buffer * buffer;
55
56
57 unsigned char omit_blklims;
58 unsigned char do_auto_lock;
59 unsigned char can_bsr;
60 unsigned char two_fm;
61 unsigned char fast_mteom;
62 unsigned char restr_dma;
63 unsigned char default_drvbuffer;
64 int write_threshold;
65
66
67 ST_mode modes[ST_NBR_MODES];
68 int current_mode;
69
70
71 unsigned char dirty;
72 unsigned char rw;
73 unsigned char ready;
74 unsigned char eof;
75 unsigned char write_prot;
76 unsigned char drv_write_prot;
77 unsigned char in_use;
78 unsigned char eof_hit;
79 unsigned char moves_after_eof;
80 unsigned char at_sm;
81 unsigned char blksize_changed;
82 unsigned char density_changed;
83 unsigned char compression_changed;
84 unsigned char drv_buffer;
85 unsigned char density;
86 unsigned char door_locked;
87 unsigned char rew_at_close;
88 int block_size;
89 int min_block;
90 int max_block;
91 int recover_count;
92 int drv_block;
93 struct mtget * mt_status;
94
95 #if DEBUG
96 unsigned char write_pending;
97 int nbr_finished;
98 int nbr_waits;
99 #endif
100 } Scsi_Tape;
101
102 extern Scsi_Tape * scsi_tapes;
103
104
105 #define ST_NOEOF 0
106 #define ST_FM 1
107 #define ST_EOM_OK 2
108 #define ST_EOM_ERROR 3
109 #define ST_EOD 4
110
111
112 #define ST_IDLE 0
113 #define ST_READING 1
114 #define ST_WRITING 2
115
116
117 #define ST_READY 0
118 #define ST_NOT_READY 1
119 #define ST_NO_TAPE 2
120
121
122 #define ST_UNLOCKED 0
123 #define ST_LOCKED_EXPLICIT 1
124 #define ST_LOCKED_AUTO 2
125 #define ST_LOCK_FAILS 3
126
127
128 #define QFA_REQUEST_BLOCK 0x02
129 #define QFA_SEEK_BLOCK 0x0c
130
131
132 #define ST_DONT_TOUCH 0
133 #define ST_NO 1
134 #define ST_YES 2
135
136 #endif
137