usr/src/sys/vax/uba/tmreg.h

/*
 * Copyright (c) 1982, 1986 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 *
 *      @(#)tmreg.h     7.1 (Berkeley) %G%
 */

/*
 * TM11 controller registers
 */
struct tmdevice {
        u_short tmer;           /* error register, per drive */
        u_short tmcs;           /* control-status register */
        short   tmbc;           /* byte/frame count */
        u_short tmba;           /* address */
        short   tmdb;           /* data buffer */
        short   tmrd;           /* read lines */
        short   tmmr;           /* maintenance register */
#ifdef  AVIV
        short   tmfsr;          /* formatter status reading */
#endif
};

#define b_repcnt  b_bcount
#define b_command b_resid

/* bits in tmcs */
#define TM_GO           0000001
#define TM_OFFL         0000000         /* offline */
#define TM_RCOM         0000002         /* read */
#define TM_WCOM         0000004         /* write */
#define TM_WEOF         0000006         /* write-eof */
#define TM_SFORW        0000010         /* space forward */
#define TM_SREV         0000012         /* space backwards */
#define TM_WIRG         0000014         /* write with xtra interrecord gap */
#define TM_REW          0000016         /* rewind */
#define TM_SENSE        TM_IE           /* sense (internal to driver) */

#define tmreverseop(cmd)                ((cmd)==TM_SREV || (cmd)==TM_REW)

/* TM_SNS is a pseudo-op used to get tape status */
#define TM_IE           0000100         /* interrupt enable */
#define TM_CUR          0000200         /* control unit is ready */
#define TM_DCLR         0010000         /* drive clear */
#define TM_D800         0060000         /* select 800 bpi density */
#define TM_ERR          0100000         /* drive error summary */

/* bits in tmer */
#define TMER_ILC        0100000         /* illegal command */
#define TMER_EOF        0040000         /* end of file */
#define TMER_CRE        0020000         /* cyclic redundancy error */
#define TMER_PAE        0010000         /* parity error */
#define TMER_BGL        0004000         /* bus grant late */
#define TMER_EOT        0002000         /* at end of tape */
#define TMER_RLE        0001000         /* record length error */
#define TMER_BTE        0000400         /* bad tape error */
#define TMER_NXM        0000200         /* non-existant memory */
#define TMER_SELR       0000100         /* tape unit properly selected */
#define TMER_BOT        0000040         /* at beginning of tape */
#define TMER_CH7        0000020         /* 7 channel tape */
#define TMER_SDWN       0000010         /* gap settling down */
#define TMER_WRL        0000004         /* tape unit write protected */
#define TMER_RWS        0000002         /* tape unit rewinding */
#define TMER_TUR        0000001         /* tape unit ready */

#define TMER_BITS       \
"\10\20ILC\17EOF\16CRE\15PAE\14BGL\13EOT\12RLE\11BTE\10NXM\
\7SELR\6BOT\5CH7\4SDWN\3WRL\2RWS\1TUR"

#define TMER_HARD       (TMER_ILC|TMER_EOT)
#define TMER_SOFT       (TMER_CRE|TMER_PAE|TMER_BGL|TMER_RLE|TMER_BTE|TMER_NXM)

#ifdef  AVIV
/* bits in tmmr (formatter diagnostic reading) */
#define DTS             000000          /* select dead track status */
#   define      DTS_MASK        0xff

#define DAB             010000          /* select diagnostic aid bits */
#   define  DAB_MASK            037     /* reject code only */

#define RWERR           020000          /* select read-write errors */
#    define RWERR_MASK          01777   /* include bit 9 (MAI) */
#    define RWERR_BITS \
"\10\12MAI\11CRC ERR\10WTMCHK\7UCE\6PART REC\5MTE\3END DATA CHK\
\2VEL ERR\1DIAG MODE"

#define DRSENSE         030000          /* select drive sense */
#    define DRSENSE_MASK        0777
#    define DRSENSE_BITS \
"\10\11WRTS\10EOTS\7BOTS\6WNHB\5PROS\4BWDS\3HDNG\2RDYS\1ON LINE"

#define CRCF            040000          /* CRC-F Generator */

#define FSR_BITS \
"\10\20REJ\17TMS\16OVRN\15DATACHK\14SSC\13EOTS\12WRTS\11ROMPS\10CRERR\
\7ONLS\6BOTS\5HDENS\4BUPER\3FPTS\2REWS\1RDYS"
#endif  AVIV