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/*
* 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
*
* $Id: scsi_tape.h,v 1.8 93/08/31 21:40:16 julian Exp Locker: julian $
*/
#ifndef SCSI_SCSI_TAPE_H
#define SCSI_SCSI_TAPE_H 1
/*
* SCSI command formats
*/
struct scsi_rw_tape
{
u_char op_code;
u_char byte2;
#define SRWT_FIXED 0x01
u_char len[3];
u_char control;
} rw_tape;
struct scsi_space
{
u_char op_code;
u_char byte2;
#define SS_CODE 0x03
u_char number[3];
u_char control;
} 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 byte2;
u_char number[3];
u_char control;
} write_filemarks;
struct scsi_rewind
{
u_char op_code;
u_char byte2;
#define SR_IMMED 0x01
u_char unused[3];
u_char control;
} rewind;
struct scsi_load
{
u_char op_code;
u_char byte2;
#define SL_IMMED 0x01
u_char unused[2];
u_char how;
u_char control;
} load;
#define LD_UNLOAD 0
#define LD_LOAD 1
#define LD_RETEN 2
struct scsi_blk_limits
{
u_char op_code;
u_char byte2;
u_char unused[3];
u_char control;
} 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 */
};
/* defines for the device specific byte in the mode select/sense header */
#define SMH_DSP_SPEED 0x0F
#define SMH_DSP_BUFF_MODE 0x70
#define SMH_DSP_BUFF_MODE_OFF 0x00
#define SMH_DSP_BUFF_MODE_ON 0x10
#define SMH_DSP_BUFF_MODE_MLTI 0x20
#define SMH_DSP_WRITE_PROT 0x80
/* A special for the CIPHER ST150S(old drive) */
struct blk_desc_cipher
{
u_char density;
u_char nblocks[3];
u_char reserved;
u_char blklen[3];
u_char other;
#define ST150_SEC 0x01 /* soft error count */
#define SR150_AUI 0x02 /* autoload inhibit */
};
/**********************************************************************
from the scsi2 spec
Value Tracks Density(bpi) Code Type Reference Note
0x1 9 800 NRZI R X3.22-1983 2
0x2 9 1600 PE R X3.39-1986 2
0x3 9 6250 GCR R X3.54-1986 2
0x5 4/9 8000 GCR C X3.136-1986 1
0x6 9 3200 PE R X3.157-1987 2
0x7 4 6400 IMFM C X3.116-1986 1
0x8 4 8000 GCR CS X3.158-1986 1
0x9 18 37871 GCR C X3B5/87-099 2
0xA 22 6667 MFM C X3B5/86-199 1
0xB 4 1600 PE C X3.56-1986 1
0xC 24 12690 GCR C HI-TC1 1,5
0xD 24 25380 GCR C HI-TC2 1,5
0xF 15 10000 GCR C QIC-120 1,5
0x10 18 10000 GCR C QIC-150 1,5
0x11 26 16000 GCR C QIC-320(525?) 1,5
0x12 30 51667 RLL C QIC-1350 1,5
0x13 1 61000 DDS CS X3B5/88-185A 4
0x14 1 43245 RLL CS X3.202-1991 4
0x15 1 45434 RLL CS ECMA TC17 4
0x16 48 10000 MFM C X3.193-1990 1
0x17 48 42500 MFM C X3B5/91-174 1
where Code means:
NRZI Non Return to Zero, change on ones
GCR Group Code Recording
PE Phase Encoded
IMFM Inverted Modified Frequency Modulation
MFM Modified Frequency Modulation
DDS Dat Data Storage
RLL Run Length Encoding
where Type means:
R Real-to-Real
C Cartridge
CS cassette
where Notes means:
1 Serial Recorded
2 Parallel Recorded
3 Old format know as QIC-11
4 Helical Scan
5 Not ANSI standard, rather industry standard.
********************************************************************/
#define HALFINCH_800 0x01
#define HALFINCH_1600 0x02
#define HALFINCH_6250 0x03
#define QIC_11 0x04 /* from Archive 150S Theory of Op. XXX */
#define QIC_24 0x05 /* may be bad, works for CIPHER ST150S XXX */
#define QIC_120 0x0f
#define QIC_150 0x10
#define QIC_320 0x11
#define QIC_525 0x11
#define QIC_1320 0x12
#define DDS 0x13
#define DAT_1 0x13
#endif /*SCSI_SCSI_TAPE_H*/
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