[unix-history] / sys / scsi / scsi_tape.h

/*
 * 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 $
 */


/*
 * 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
Commit	Line	Data
15637ed4 RG	1	/*
	2	* SCSI tape interface description
	3	*/
	4
	5	/*
	6	* Written by Julian Elischer (julian@tfs.com)
	7	* for TRW Financial Systems.
	8	*
	9	* TRW Financial Systems, in accordance with their agreement with Carnegie
	10	* Mellon University, makes this software available to CMU to distribute
	11	* or use in any manner that they see fit as long as this message is kept with
	12	* the software. For this reason TFS also grants any other persons or
	13	* organisations permission to use or modify this software.
	14	*
	15	* TFS supplies this software to be publicly redistributed
	16	* on the understanding that TFS is not responsible for the correct
	17	* functioning of this software in any circumstances.
	18	*
d4284689 RG	19	*/
	20
	21	/*
15637ed4	22	* Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
98639498	23	*
0269d546	24	* $Id: scsi_tape.h,v 1.8 93/08/31 21:40:16 julian Exp Locker: julian $
15637ed4 RG	25	*/
15637ed4 RG	26
d4284689 RG	27
d4284689 RG	28
15637ed4	29	/*
d4284689	30	* SCSI command formats
15637ed4 RG	31	*/
15637ed4 RG	32
d4284689	33
15637ed4 RG	34	struct scsi_rw_tape
	35	{
	36	u_char op_code;
869c4419 RG	37	u_char byte2;
869c4419 RG	38	#define SRWT_FIXED 0x01
15637ed4	39	u_char len[3];
869c4419	40	u_char control;
15637ed4 RG	41	} rw_tape;
	42
	43	struct scsi_space
	44	{
	45	u_char op_code;
869c4419 RG	46	u_char byte2;
869c4419 RG	47	#define SS_CODE 0x03
15637ed4	48	u_char number[3];
869c4419	49	u_char control;
15637ed4 RG	50	} space;
	51	#define SP_BLKS 0
	52	#define SP_FILEMARKS 1
	53	#define SP_SEQ_FILEMARKS 2
	54	#define SP_EOM 3
	55
	56	struct scsi_write_filemarks
	57	{
	58	u_char op_code;
869c4419	59	u_char byte2;
15637ed4	60	u_char number[3];
869c4419	61	u_char control;
15637ed4 RG	62	} write_filemarks;
	63
	64	struct scsi_rewind
	65	{
	66	u_char op_code;
869c4419 RG	67	u_char byte2;
869c4419 RG	68	#define SR_IMMED 0x01
15637ed4	69	u_char unused[3];
869c4419	70	u_char control;
15637ed4 RG	71	} rewind;
	72
	73	struct scsi_load
	74	{
	75	u_char op_code;
869c4419 RG	76	u_char byte2;
869c4419 RG	77	#define SL_IMMED 0x01
15637ed4	78	u_char unused[2];
869c4419 RG	79	u_char how;
869c4419 RG	80	u_char control;
15637ed4 RG	81	} load;
	82	#define LD_UNLOAD 0
	83	#define LD_LOAD 1
869c4419 RG	84	#define LD_RETEN 2
869c4419 RG	85
15637ed4 RG	86
	87	struct scsi_blk_limits
	88	{
	89	u_char op_code;
869c4419	90	u_char byte2;
15637ed4	91	u_char unused[3];
869c4419	92	u_char control;
15637ed4 RG	93	} blk_limits;
	94
	95	/*
	96	* Opcodes
	97	*/
	98
	99	#define REWIND 0x01
	100	#define READ_BLK_LIMITS 0x05
	101	#define READ_COMMAND_TAPE 0x08
	102	#define WRITE_COMMAND_TAPE 0x0a
	103	#define WRITE_FILEMARKS 0x10
	104	#define SPACE 0x11
	105	#define LOAD_UNLOAD 0x1b /* same as above */
	106
	107
	108
	109	struct scsi_blk_limits_data
	110	{
	111	u_char reserved;
	112	u_char max_length_2; /* Most significant */
	113	u_char max_length_1;
	114	u_char max_length_0; /* Least significant */
	115	u_char min_length_1; /* Most significant */
	116	u_char min_length_0; /* Least significant */
	117	};
	118
869c4419 RG	119	/* defines for the device specific byte in the mode select/sense header */
	120	#define SMH_DSP_SPEED 0x0F
	121	#define SMH_DSP_BUFF_MODE 0x70
	122	#define SMH_DSP_BUFF_MODE_OFF 0x00
	123	#define SMH_DSP_BUFF_MODE_ON 0x10
	124	#define SMH_DSP_BUFF_MODE_MLTI 0x20
	125	#define SMH_DSP_WRITE_PROT 0x80
15637ed4	126
a0becc21 NW	127	/* A special for the CIPHER ST150S(old drive) */
	128	struct blk_desc_cipher
	129	{
	130	u_char density;
	131	u_char nblocks[3];
	132	u_char reserved;
	133	u_char blklen[3];
869c4419 RG	134	u_char other;
	135	#define ST150_SEC 0x01 /* soft error count */
	136	#define SR150_AUI 0x02 /* autoload inhibit */
a0becc21 NW	137	};
	138
	139
15637ed4	140
a0becc21 NW	141	/**********************************************************************
	142	from the scsi2 spec
	143	Value Tracks Density(bpi) Code Type Reference Note
	144	0x1 9 800 NRZI R X3.22-1983 2
	145	0x2 9 1600 PE R X3.39-1986 2
	146	0x3 9 6250 GCR R X3.54-1986 2
	147	0x5 4/9 8000 GCR C X3.136-1986 1
	148	0x6 9 3200 PE R X3.157-1987 2
	149	0x7 4 6400 IMFM C X3.116-1986 1
	150	0x8 4 8000 GCR CS X3.158-1986 1
	151	0x9 18 37871 GCR C X3B5/87-099 2
	152	0xA 22 6667 MFM C X3B5/86-199 1
	153	0xB 4 1600 PE C X3.56-1986 1
	154	0xC 24 12690 GCR C HI-TC1 1,5
	155	0xD 24 25380 GCR C HI-TC2 1,5
	156	0xF 15 10000 GCR C QIC-120 1,5
	157	0x10 18 10000 GCR C QIC-150 1,5
	158	0x11 26 16000 GCR C QIC-320(525?) 1,5
	159	0x12 30 51667 RLL C QIC-1350 1,5
	160	0x13 1 61000 DDS CS X3B5/88-185A 4
	161	0x14 1 43245 RLL CS X3.202-1991 4
	162	0x15 1 45434 RLL CS ECMA TC17 4
	163	0x16 48 10000 MFM C X3.193-1990 1
	164	0x17 48 42500 MFM C X3B5/91-174 1
	165
	166	where Code means:
	167	NRZI Non Return to Zero, change on ones
	168	GCR Group Code Recording
	169	PE Phase Encoded
	170	IMFM Inverted Modified Frequency Modulation
	171	MFM Modified Frequency Modulation
	172	DDS Dat Data Storage
	173	RLL Run Length Encoding
	174
	175	where Type means:
	176	R Real-to-Real
	177	C Cartridge
	178	CS cassette
	179
	180	where Notes means:
	181	1 Serial Recorded
	182	2 Parallel Recorded
	183	3 Old format know as QIC-11
	184	4 Helical Scan
	185	5 Not ANSI standard, rather industry standard.
	186
	187	********************************************************************/
	188
	189	#define HALFINCH_800 0x01
	190	#define HALFINCH_1600 0x02
	191	#define HALFINCH_6250 0x03
d4284689	192	#define QIC_11 0x04 /* from Archive 150S Theory of Op. XXX */
a0becc21 NW	193	#define QIC_24 0x05 /* may be bad, works for CIPHER ST150S XXX */
	194	#define QIC_120 0x0f
	195	#define QIC_150 0x10
	196	#define QIC_320 0x11
	197	#define QIC_525 0x11
	198	#define QIC_1320 0x12
0269d546 RG	199	#define DDS 0x13
0269d546 RG	200	#define DAT-1 0x13
15637ed4 RG	201
15637ed4 RG	202