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

1.1       root        1: /* ethinit.c - ethinit */
                      2: 
                      3: #include <conf.h>
                      4: #include <kernel.h>
                      5: #include <network.h>
                      6: #include <qbus.h>
                      7: 
                      8: /*------------------------------------------------------------------------
                      9:  *  ethinit  -  initialize ethernet I/O device and buffers
                     10:  *------------------------------------------------------------------------
                     11:  */
                     12: ethinit(devptr)
                     13:        struct  devsw   *devptr;
                     14: {
                     15:        struct  etblk   *etptr;
                     16:        struct  dqregs  *dqptr;
                     17:        struct  dcmd    *dcmptr;
                     18:        short   *iptr;
                     19:        int     i;
                     20:        struct  dqsetup setup;
                     21: 
                     22:        etptr = &eth[devptr->dvminor];
                     23:        devptr->dvioblk = (char *) etptr;
                     24:        iosetvec(devptr->dvnum, etptr, etptr);
                     25:        etptr->eioaddr = dqptr = (struct dqregs *) devptr->dvcsr;
                     26:        etptr->etdev = devptr;
                     27:        etptr->etrsem = screate(1);
                     28:        etptr->etwsem = screate(1);
                     29:        etptr->etrpid = 0;
                     30: 
                     31:        /* establish read and write buffer descriptor lists */
                     32: 
                     33:        dcmptr = &etptr->ercmd[1];
                     34:        dcmptr->dc_flag = DC_NUSED;
                     35:        dcmptr->dc_bufh = DC_ENDL;
                     36:        dcmptr->dc_buf = (short) NULL;
                     37: 
                     38:        dcmptr = &etptr->ewcmd[1];
                     39:        dcmptr->dc_flag = DC_NUSED;
                     40:        dcmptr->dc_bufh = DC_ENDL;
                     41:        dcmptr->dc_buf = (short) NULL;
                     42:        dcmptr->dc_st1 = dcmptr->dc_st2 = DC_INIT;
                     43: 
                     44:        /* extract physical ethernet address */
                     45: 
                     46:        for (iptr=(short *)dqptr ,i=0 ; i<EPADLEN ; i++)
                     47:                etptr->etpaddr[i] = LOWBYTE & *iptr++;
                     48: 
                     49:        ethstrt(etptr, &setup);
                     50:        return(OK);
                     51: }
                     52: 
                     53: #ifdef Neth
                     54: struct etblk   eth[Neth];
                     55: #endif

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