4.2 distribution

[unix-history] / usr / src / sys / vax / uba / dmfreg.h

/*      dmfreg.h        6.1     83/07/29        */

/*
* DMF-32 definitions.
*/

/*
* "dmf" (unqualified) refers to the async portion of the dmf32,
* "dmfc" to the combo portion,
* "dmfs" to the sync portion,
* "dmfl" to the lp portion, and
* "dmfd" to the dr portion.
*/
struct dmfdevice {
       short   dmfccsr0;               /* combo csr 0 */
       short   dmfccsr1;               /* combo csr 1 */
       short   dmfs[4];
       short   dmfcsr;                 /* control-status register */
       short   dmflpr;                 /* line parameter register */
       short   dmfrbuf;                /* receiver buffer (ro) */
       union {
               u_short dmfirw;         /* indirect register word */
               u_char  dmfirc[2];      /*    "         "    bytes */
       } dmfun;
       short   dmfl[2];
       short   dmfd[4];
};

#define dmfrsp  dmfrbuf         /* receive silo parameter register (wo) */
#define dmftbuf dmfun.dmfirc[0] /* transmit buffer */
#define dmftsc  dmfun.dmfirc[0] /* transmit silo count */
#define dmfrms  dmfun.dmfirc[1] /* receive modem status */
#define dmflcr  dmfun.dmfirc[0] /* line control register */
#define dmftms  dmfun.dmfirc[1] /* transmit modem status */
#define dmftba  dmfun.dmfirw    /* transmit buffer address */
#define dmftcc  dmfun.dmfirw    /* transmit character count */

/* bits in dmfcsr */
#define DMF_TI  0100000         /* transmit interrupt */
#define DMF_TIE 0040000         /* transmit interrupt enable */
#define DMF_NXM 0020000         /* non-existant memory */
#define DMF_LIN 0003400         /* transmit line number */
#define DMF_RI  0000200         /* receiver interrupt */
#define DMF_RIE 0000100         /* receiver interrupt enable */
#define DMF_CLR 0000040         /* master reset */
#define DMF_IAD 0000037         /* indirect address register */

#define DMFIR_TBUF      000     /* select tbuf indirect register */
#define DMFIR_LCR       010     /* select lcr indirect register */
#define DMFIR_TBA       020     /* select tba indirect register */
#define DMFIR_TCC       030     /* select tcc indirect register */

/* bits in dmflpr */
#define BITS6   (01<<3)
#define BITS7   (02<<3)
#define BITS8   (03<<3)
#define TWOSB   0200
#define PENABLE 040
#define EPAR    0100

#define DMF_IE  (DMF_TIE|DMF_RIE)

#define DMF_SILOCNT     32              /* size of DMF output silo (per line) */

/* bits in dmfrbuf */
#define DMF_DSC         0004000         /* data set change */
#define DMF_PE          0010000         /* parity error */
#define DMF_FE          0020000         /* framing error */
#define DMF_DO          0040000         /* data overrun */

/* bits in dmfrms */
#define DMF_USRR        0004            /* user modem signal (pin 25) */
#define DMF_SR          0010            /* secondary receive */
#define DMF_CTS         0020            /* clear to send */
#define DMF_CAR         0040            /* carrier detect */
#define DMF_RNG         0100            /* ring */
#define DMF_DSR         0200            /* data set ready */

/* bits in dmftms */
#define DMF_USRW        0001            /* user modem signal (pin 18) */
#define DMF_DTR         0002            /* data terminal ready */
#define DMF_RATE        0004            /* data signal rate select */
#define DMF_ST          0010            /* secondary transmit */
#define DMF_RTS         0020            /* request to send */
#define DMF_BRK         0040            /* pseudo break bit */
#define DMF_PREEMPT     0200            /* preempt output */

/* flags for modem control */
#define DMF_ON  (DMF_DTR|DMF_RTS)
#define DMF_OFF 0

/* bits in dmflcr */
#define DMF_MIE         0040            /* modem interrupt enable */
#define DMF_FLUSH       0020            /* flush transmit silo */
#define DMF_RBRK        0010            /* real break bit */
#define DMF_RE          0004            /* receive enable */
#define DMF_AUTOX       0002            /* auto XON/XOFF */
#define DMF_TE          0001            /* transmit enable */

#define DMFLCR_ENA      (DMF_MIE|DMF_RE|DMF_TE)

/* bits in dm lsr, copied from dh.c */
#define DML_USR         0001000         /* usr modem sig, not a real DM bit */
#define DML_DSR         0000400         /* data set ready, not a real DM bit */
#define DML_RNG         0000200         /* ring */
#define DML_CAR         0000100         /* carrier detect */
#define DML_CTS         0000040         /* clear to send */
#define DML_SR          0000020         /* secondary receive */
#define DML_ST          0000010         /* secondary transmit */
#define DML_RTS         0000004         /* request to send */
#define DML_DTR         0000002         /* data terminal ready */
#define DML_LE          0000001         /* line enable */

#define SETLCR(pt, exp) \
       pt->dmfun.dmfirw = (((pt)->dmftms)<<8) | ((exp)&0xff)