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Diffstat (limited to 'sys/scsi/scsi_tape.h')
-rw-r--r-- | sys/scsi/scsi_tape.h | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/sys/scsi/scsi_tape.h b/sys/scsi/scsi_tape.h new file mode 100644 index 0000000..ac417c2 --- /dev/null +++ b/sys/scsi/scsi_tape.h @@ -0,0 +1,204 @@ +/* + * 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*/ |