address already set in get()

[unix-history] / usr / src / sys / hp300 / stand / autoconf.c

/*
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department.
*
* %sccs.include.redist.c%
*
* from: Utah $Hdr: autoconf.c 1.9 89/10/07$
*
*      @(#)autoconf.c  7.1 (Berkeley) %G%
*/

#include "samachdep.h"
#include "param.h"

#include "../hpdev/device.h"
#include "../hpdev/grfvar.h"

struct hp_hw sc_table[MAX_CTLR];

configure()
{
       find_devs();
       cninit();
       hpibinit();
       scsiinit();
}

sctoaddr(sc)
       int sc;
{
       extern int internalhpib;

       if (sc == -2)
               return(0x1000000);
       if (sc == -1)
               return(GRFIADDR);
       if (sc == 7)
               return(internalhpib);
       if (sc < 32)
               return(0x600000+(0x10000*sc));
       return(sc);
}

/*
* Probe all select codes (0 - 32) and internal display address.
* Note that we only care about displays, SCSIs and HP-IBs.
*/
find_devs()
{
       u_char *id_reg;
       register short sc;
       register int addr;
       register struct hp_hw *hw;

       hw = sc_table;
       for (sc = -2; sc < 32; sc++) {
               addr = sctoaddr(sc);
               if (badaddr(addr))
                       continue;

               id_reg = (u_char *) addr;
               hw->hw_addr = (char *) addr;
               hw->hw_id = id_reg[1] & 0xff;
               hw->hw_sc = sc;

               switch (hw->hw_id) {
               case 8:         /* 98625B */
               case 128:       /* 98624A */
                       hw->hw_type = HPIB;
                       break;
               case 57:        /* Displays */
                       hw->hw_type = BITMAP;
                       hw->hw_id2 = id_reg[0x15];
                       switch (hw->hw_id2) {
                       case 4: /* renaissance */
                       case 8: /* davinci */
                               sc++;           /* occupy 2 select codes */
                               break;
                       }
                       break;
               case 9:
                       hw->hw_type = KEYBOARD;
                       break;
               case 7:
               case 39:
               case 71:
               case 103:
                       hw->hw_type = SCSI;
                       break;
               default:        /* who cares */
                       hw->hw_type = MISC;
                       break;
               }
               hw++;
       }
}