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Annotation of xinu/sys/dlcinit.c, revision 1.1

1.1     ! root        1: /* dlcinit.c - dlcinit */
        !             2: 
        !             3: #include <conf.h>
        !             4: #include <kernel.h>
        !             5: #include <slu11.h>
        !             6: #include <proc.h>
        !             7: #include <sleep.h>
        !             8: #include <dlc.h>
        !             9: 
        !            10: struct dlblk   dlc[Ndlc];
        !            11: 
        !            12: /*------------------------------------------------------------------------
        !            13:  *  dlcinit  --  initialize dlc control block and device
        !            14:  *------------------------------------------------------------------------
        !            15:  */
        !            16: dlcinit(devptr)
        !            17: struct devsw   *devptr;
        !            18: {
        !            19:        struct  dlblk   *dptr;
        !            20:        struct  csr     *cptr;
        !            21:        char    ps;
        !            22:        int     junk;
        !            23: 
        !            24:        return;                 /* to make MECB version work******** */
        !            25: 
        !            26:        disable(ps);
        !            27:        dptr = &dlc[devptr->dvminor];
        !            28:        devptr->dvioblk = dptr;
        !            29:        iosetvec(devptr->dvnum, dptr, dptr);
        !            30:        dptr->dioaddr = devptr->dvcsr;
        !            31:        dptr->dostall = 0;
        !            32:        dptr->distate = DLIINIT;
        !            33:        dptr->dostate = DLOINIT;
        !            34:        dptr->donext = dptr->dinext = NULL;
        !            35:        dptr->doesc = dptr->diesc = 0;
        !            36:        dptr->dpid = 0;
        !            37:        dptr->dovalid = FALSE;
        !            38:        dptr->diproc = dptr->doproc = -1;
        !            39:        dptr->dotot = dptr->docount = 0;
        !            40:        dptr->dimax = dptr->dicount = 0;
        !            41:        cptr = dptr->dioaddr;           /* get device CSR address       */
        !            42:        junk = cptr->crbuf;             /* clear device receiver and    */
        !            43:        cptr->crstat = SLUENABLE;       /*   enable read interrupts     */
        !            44:        cptr->ctstat = SLUDISABLE;      /* disable write interrupts     */
        !            45: }

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