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

/*      tmreg.h 4.3     81/02/21        */

/*
 * TM11 controller registers
 */
struct device {
        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 */
};

#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) */
/* 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 TM_TUR          0000001         /* tape unit ready */
#define TM_RWS          0000002         /* tape unit rewinding */
#define TM_WRL          0000004         /* tape unit write protected */
#define TM_SDWN         0000010         /* gap settling down */
#define TM_BOT          0000040         /* at beginning of tape */
#define TM_SELR         0000100         /* tape unit properly selected */
#define TM_NXM          0000200         /* non-existant memory */
#define TM_BTE          0000400         /* bad tape error */
#define TM_RLE          0001000         /* record length error */
#define TM_EOT          0002000         /* at end of tape */
#define TM_BGL          0004000         /* bus grant late */
#define TM_PAE          0010000         /* parity error */
#define TM_CRE          0020000         /* cyclic redundancy error */
#define TM_EOF          0040000         /* end of file */
#define TM_ILC          0100000         /* illegal command */

#define TM_HARD         (TM_ILC|TM_EOT)
#define TM_SOFT         (TM_CRE|TM_PAE|TM_BGL|TM_RLE|TM_BTE|TM_NXM)