DiskController.cpp

/* ES40 emulator.
 * Copyright (C) 2007 by the ES40 Emulator Project
 *
 * WWW    : http://sourceforge.net/projects/es40
 * E-mail : camiel@camicom.com
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 * 
 * Although this is not required, the author would appreciate being notified of, 
 * and receiving any modifications you may make to the source code that might serve
 * the general public.
 */

/**
 * \file
 * Contains definitions for the disk controller base class.
 *
 * X-1.12       Camiel Vanderhoeven                             14-JAN-2008
 *      Removed unreferenced variable.
 *
 * X-1.11       Brian Wheeler                                   13-JAN-2008
 *      Avoid deleting Disk devices twice.
 *
 * X-1.9        Camiel Vanderhoeven                             12-JAN-2008
 *      Made register_disk void and virtual.
 *
 * X-1.8        Camiel Vanderhoeven                             29-DEC-2007
 *      Fix memory-leak.
 *
 * X-1.7        Camiel Vanderhoeven                             28-DEC-2007
 *      Keep the compiler happy.
 *
 * X-1.6        Camiel Vanderhoeven                             18-DEC-2007
 *      Initialize pointers to 0 in constructor. (doh!)
 *
 * X-1.5        Camiel Vanderhoeven                             17-DEC-2007
 *      Removed excessive whitespace.
 *
 * X-1.4        Brian Wheeler                                   16-DEC-2007
 *      Added newline at end of file.
 *
 * X-1.3        Camiel Vanderhoeven                             16-DEC-2007
 *      Include Disk.h, so children's destructors can be called.
 *
 * X-1.2        Camiel Vanderhoeven                             14-DEC-2007
 *      Delete children upon destruction.
 *
 * X-1.1        Camiel Vanderhoeven                             12-DEC-2007
 *      Initial version in CVS.
 **/

#include "StdAfx.h"
#include "DiskController.h"
#include "Disk.h"

CDiskController::CDiskController(CConfigurator * cfg, CSystem * c, int pcibus, int pcidev, int num_busses, int num_devices) : CPCIDevice(cfg,c,pcibus,pcidev)
{
  num_bus = num_busses;
  num_dev = num_devices;

  disks = (CDisk**) calloc(num_bus*num_dev,sizeof(CDisk*));
}

CDiskController::~CDiskController(void)
{
  free(disks);
}

void CDiskController::register_disk(class CDisk * dsk, int bus, int dev)
{
  if (bus>=num_bus) 
    FAILURE("Can't register disk: bus number out of range");
  if (dev>=num_dev)
    FAILURE("Can't register disk: device number out of range");

  disks[bus*num_bus+dev] = dsk;
}

class CDisk * CDiskController::get_disk(int bus, int dev)
{
  if (bus>=num_bus) return 0;
  if (dev>=num_dev) return 0;

  return disks[bus*num_bus+dev];
}