sys/arch/atari/stand/tostools/libtos/ahdi.c

   1 /*      $NetBSD: edahdi.c,v 1.3 2000/02/15 10:14:55 leo Exp $   */
   2
   3 /*
   4  * Copyright (c) 1996 Leo Weppelman, Waldi Ravens.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by
  18  *                      Leo Weppelman and Waldi Ravens.
  19  * 4. The name of the author may not be used to endorse or promote products
  20  *    derived from this software without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <sys/types.h>
  35 #include <stdlib.h>
  36 #include <string.h>
  37 #include <ctype.h>
  38 #include <stdio.h>
  39 #include <xhdi.h>
  40 #include "libtos.h"
  41 #include "diskio.h"
  42 #include "ahdilbl.h"
  43
  44 u_int
  45 ahdi_getparts(dd, ptable, rsec, esec)
  46         disk_t                  *dd;
  47         ptable_t                *ptable;
  48         u_int                   rsec,
  49                                 esec;
  50 {
  51         struct ahdi_part        *part, *end;
  52         struct ahdi_root        *root;
  53         u_int                   rv;
  54
  55         root = disk_read(dd, rsec, 1);
  56         if (!root) {
  57                 rv = rsec + (rsec == 0);
  58                 goto done;
  59         }
  60
  61         if (rsec == AHDI_BBLOCK)
  62                 end = &root->ar_parts[AHDI_MAXRPD];
  63         else end = &root->ar_parts[AHDI_MAXARPD];
  64         for (part = root->ar_parts; part < end; ++part) {
  65                 u_int   id = *((u_int32_t *)&part->ap_flg);
  66                 if (!(id & 0x01000000))
  67                         continue;
  68                 if ((id &= 0x00ffffff) == AHDI_PID_XGM) {
  69                         u_int   offs = part->ap_st + esec;
  70                         rv = ahdi_getparts(dd, ptable, offs,
  71                                         esec == AHDI_BBLOCK ? offs : esec);
  72                         if (rv)
  73                                 goto done;
  74                 } else {
  75                         part_t  *p;
  76                         u_int   i = ++ptable->nparts;
  77                         ptable->parts = xrealloc(ptable->parts,
  78                                                 i * sizeof *ptable->parts);
  79                         p = &ptable->parts[--i];
  80                         *((u_int32_t *)&p->id) = id << 8;
  81                         p->start = part->ap_st + rsec;
  82                         p->end   = p->start + part->ap_size - 1;
  83                         p->rsec  = rsec;
  84                         p->rent  = part - root->ar_parts;
  85                         p->mod   = 0;
  86                 }
  87         }
  88         rv = 0;
  89 done:
  90         free(root);
  91         return(rv);
  92 }