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Annotation of xinu/sys/vcuinit.c, revision 1.1.1.1

1.1       root        1: /* vcuinit.c - vcuinit */
                      2: 
                      3: #include <conf.h>
                      4: #include <kernel.h>
                      5: #include <proc.h>
                      6: #include <tty.h>
                      7: #include <io.h>
                      8: #include <vcu.h>
                      9: #include <procreg.h>
                     10: 
                     11: /*------------------------------------------------------------------------
                     12:  *  vcuinit - initialize buffers and modes for a vax console device
                     13:  *------------------------------------------------------------------------
                     14:  */
                     15: vcuinit(devptr)
                     16:        struct  devsw   *devptr;
                     17: {
                     18:        register struct tty *iptr;
                     19:        int      junk, isconsole;
                     20: 
                     21:        /* set up interrupt vector and interrupt dispatch table */
                     22: 
                     23:        iptr = &tty[devptr->dvminor];
                     24:        iosetvec(devptr->dvnum, iptr, iptr);
                     25: 
                     26:        devptr->dvioblk = (char *)iptr;         /* fill tty control blk */
                     27:        isconsole = (devptr->dvnum == CONSOLE); /* make console cooked  */
                     28:        iptr->ioaddr=(struct csr *)devptr->dvcsr;/* not necessary       */
                     29:        iptr->ihead = iptr->itail = 0;          /* empty input queue    */
                     30:        iptr->isem = screate(0);                /* chars. read so far=0 */
                     31:        iptr->osem = screate(OBUFLEN);          /* buffer available=all */
                     32:        iptr->odsend = 0;                       /* sends delayed so far */
                     33:        iptr->ohead = iptr->otail = 0;          /* output queue empty   */
                     34:        iptr->ehead = iptr->etail = 0;          /* echo queue empty     */
                     35:        iptr->imode = (isconsole ? IMCOOKED : IMRAW);
                     36:        iptr->iecho = iptr->evis = isconsole;   /* echo console input   */
                     37:        iptr->ierase = iptr->ieback = isconsole;/* console honors erase */
                     38:        iptr->ierasec = BACKSP;                 /*  using ^h            */
                     39:        iptr->ecrlf = iptr->icrlf = isconsole;  /* map RETURN on input  */
                     40:        iptr->ocrlf = iptr->oflow = isconsole;  /* map RETURN on output */
                     41:        iptr->ieof  = iptr->ikill = isconsole;  /* set line kill=KILLCH */
                     42:        iptr->iintr = FALSE;
                     43:        iptr->iintrc = INTRCH;
                     44:        iptr->iintpid = BADPID;
                     45:        iptr->ikillc = KILLCH;
                     46:        iptr->ieofc = EOFC;
                     47:        iptr->oheld = FALSE;
                     48:        iptr->ostart = STRTCH;
                     49:        iptr->ostop = STOPCH;
                     50:        iptr->icursor = 0;
                     51:        iptr->ifullc = TFULLC;
                     52:        junk = mfpr(RXDB);                      /* clear receiver */
                     53:        mtpr(VCURXCSENBL, RXCS);                /* enable in intrpts*/
                     54:        mtpr(VCUTXCSDSBL, TXCS);                /* disable out "  */
                     55: }

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