[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 command format
 */

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