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Commit	Line	Data
	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	*
	19	*/
	20
	21	/*
	22	* Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
	23	*
	24	* $Id: scsi_tape.h,v 1.8 93/08/31 21:40:16 julian Exp Locker: julian $
	25	*/
	26	#ifndef SCSI_SCSI_TAPE_H
	27	#define SCSI_SCSI_TAPE_H 1
	28
	29
	30
	31	/*
	32	* SCSI command formats
	33	*/
	34
	35
	36	struct scsi_rw_tape
	37	{
	38	u_char op_code;
	39	u_char byte2;
	40	#define SRWT_FIXED 0x01
	41	u_char len[3];
	42	u_char control;
	43	} rw_tape;
	44
	45	struct scsi_space
	46	{
	47	u_char op_code;
	48	u_char byte2;
	49	#define SS_CODE 0x03
	50	u_char number[3];
	51	u_char control;
	52	} space;
	53	#define SP_BLKS 0
	54	#define SP_FILEMARKS 1
	55	#define SP_SEQ_FILEMARKS 2
	56	#define SP_EOM 3
	57
	58	struct scsi_write_filemarks
	59	{
	60	u_char op_code;
	61	u_char byte2;
	62	u_char number[3];
	63	u_char control;
	64	} write_filemarks;
	65
	66	struct scsi_rewind
	67	{
	68	u_char op_code;
	69	u_char byte2;
	70	#define SR_IMMED 0x01
	71	u_char unused[3];
	72	u_char control;
	73	} rewind;
	74
	75	struct scsi_load
	76	{
	77	u_char op_code;
	78	u_char byte2;
	79	#define SL_IMMED 0x01
	80	u_char unused[2];
	81	u_char how;
	82	u_char control;
	83	} load;
	84	#define LD_UNLOAD 0
	85	#define LD_LOAD 1
	86	#define LD_RETEN 2
	87
	88
	89	struct scsi_blk_limits
	90	{
	91	u_char op_code;
	92	u_char byte2;
	93	u_char unused[3];
	94	u_char control;
	95	} blk_limits;
	96
	97	/*
	98	* Opcodes
	99	*/
	100
	101	#define REWIND 0x01
	102	#define READ_BLK_LIMITS 0x05
	103	#define READ_COMMAND_TAPE 0x08
	104	#define WRITE_COMMAND_TAPE 0x0a
	105	#define WRITE_FILEMARKS 0x10
	106	#define SPACE 0x11
	107	#define LOAD_UNLOAD 0x1b /* same as above */
	108
	109
	110
	111	struct scsi_blk_limits_data
	112	{
	113	u_char reserved;
	114	u_char max_length_2; /* Most significant */
	115	u_char max_length_1;
	116	u_char max_length_0; /* Least significant */
	117	u_char min_length_1; /* Most significant */
	118	u_char min_length_0; /* Least significant */
	119	};
	120
	121	/* defines for the device specific byte in the mode select/sense header */
	122	#define SMH_DSP_SPEED 0x0F
	123	#define SMH_DSP_BUFF_MODE 0x70
	124	#define SMH_DSP_BUFF_MODE_OFF 0x00
	125	#define SMH_DSP_BUFF_MODE_ON 0x10
	126	#define SMH_DSP_BUFF_MODE_MLTI 0x20
	127	#define SMH_DSP_WRITE_PROT 0x80
	128
	129	/* A special for the CIPHER ST150S(old drive) */
	130	struct blk_desc_cipher
	131	{
	132	u_char density;
	133	u_char nblocks[3];
	134	u_char reserved;
	135	u_char blklen[3];
	136	u_char other;
	137	#define ST150_SEC 0x01 /* soft error count */
	138	#define SR150_AUI 0x02 /* autoload inhibit */
	139	};
	140
	141
	142
	143	/**********************************************************************
	144	from the scsi2 spec
	145	Value Tracks Density(bpi) Code Type Reference Note
	146	0x1 9 800 NRZI R X3.22-1983 2
	147	0x2 9 1600 PE R X3.39-1986 2
	148	0x3 9 6250 GCR R X3.54-1986 2
	149	0x5 4/9 8000 GCR C X3.136-1986 1
	150	0x6 9 3200 PE R X3.157-1987 2
	151	0x7 4 6400 IMFM C X3.116-1986 1
	152	0x8 4 8000 GCR CS X3.158-1986 1
	153	0x9 18 37871 GCR C X3B5/87-099 2
	154	0xA 22 6667 MFM C X3B5/86-199 1
	155	0xB 4 1600 PE C X3.56-1986 1
	156	0xC 24 12690 GCR C HI-TC1 1,5
	157	0xD 24 25380 GCR C HI-TC2 1,5
	158	0xF 15 10000 GCR C QIC-120 1,5
	159	0x10 18 10000 GCR C QIC-150 1,5
	160	0x11 26 16000 GCR C QIC-320(525?) 1,5
	161	0x12 30 51667 RLL C QIC-1350 1,5
	162	0x13 1 61000 DDS CS X3B5/88-185A 4
	163	0x14 1 43245 RLL CS X3.202-1991 4
	164	0x15 1 45434 RLL CS ECMA TC17 4
	165	0x16 48 10000 MFM C X3.193-1990 1
	166	0x17 48 42500 MFM C X3B5/91-174 1
	167
	168	where Code means:
	169	NRZI Non Return to Zero, change on ones
	170	GCR Group Code Recording
	171	PE Phase Encoded
	172	IMFM Inverted Modified Frequency Modulation
	173	MFM Modified Frequency Modulation
	174	DDS Dat Data Storage
	175	RLL Run Length Encoding
	176
	177	where Type means:
	178	R Real-to-Real
	179	C Cartridge
	180	CS cassette
	181
	182	where Notes means:
	183	1 Serial Recorded
	184	2 Parallel Recorded
	185	3 Old format know as QIC-11
	186	4 Helical Scan
	187	5 Not ANSI standard, rather industry standard.
	188
	189	********************************************************************/
	190
	191	#define HALFINCH_800 0x01
	192	#define HALFINCH_1600 0x02
	193	#define HALFINCH_6250 0x03
	194	#define QIC_11 0x04 /* from Archive 150S Theory of Op. XXX */
	195	#define QIC_24 0x05 /* may be bad, works for CIPHER ST150S XXX */
	196	#define QIC_120 0x0f
	197	#define QIC_150 0x10
	198	#define QIC_320 0x11
	199	#define QIC_525 0x11
	200	#define QIC_1320 0x12
	201	#define DDS 0x13
	202	#define DAT_1 0x13
	203
	204	#endif /SCSI_SCSI_TAPE_H/