text: /*	$NetBSD: vme.c,v 1.10 1998/02/05 04:57:52 gwr Exp $	*/
  
  /*-
   * Copyright (c) 1996 The NetBSD Foundation, Inc.
   * All rights reserved.
   *
   * This code is derived from software contributed to The NetBSD Foundation
   * by Gordon W. Ross.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. All advertising materials mentioning features or use of this software
   *    must display the following acknowledgement:
   *        This product includes software developed by the NetBSD
   *        Foundation, Inc. and its contributors.
   * 4. Neither the name of The NetBSD Foundation nor the names of its
   *    contributors may be used to endorse or promote products derived
   *    from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   * POSSIBILITY OF SUCH DAMAGE.
   */
  
  #include <sys/param.h>
  #include <sys/systm.h>
  #include <sys/device.h>
  
  #include <machine/autoconf.h>
  
  /* Does this machine have a VME bus? */
  extern int cpu_has_vme;
  
  /*
   * Convert vme unit number to bus type,
   * but only for supported bus types.
   * (See autoconf.h and vme.h)
   */
  #define VME_UNITS	6
  static const struct {
  	int bustype;
  	char name[8];
  } vme_info[VME_UNITS] = {
  	{ BUS_VME16D16, "A16/D16" },
  	{ BUS_VME16D32, "A16/D32" },
  	{ BUS_VME24D16, "A24/D16" },
  	{ BUS_VME24D32, "A24/D32" },
  	{ BUS_VME32D16, "A32/D16" },
  	{ BUS_VME32D32, "A32/D32" },
  };
  
  static int  vme_match __P((struct device *, struct cfdata *, void *));
  static void vme_attach __P((struct device *, struct device *, void *));
  
  struct cfattach vme_ca = {
  	sizeof(struct device), vme_match, vme_attach
  };
  
  static int
  vme_match(parent, cf, aux)
  	struct device *parent;
  	struct cfdata *cf;
  	void *aux;
  {
  	struct confargs *ca = aux;
  	int unit;
  
  	if (cpu_has_vme == 0)
  		return (0);
  
  	unit = cf->cf_unit;
  	if (unit >= VME_UNITS)
  		return (0);
  
  	if (ca->ca_bustype != vme_info[unit].bustype)
  		return (0);
  
  	return (1);
  }
  
  static void
  vme_attach(parent, self, args)
  	struct device *parent;
  	struct device *self;
  	void *args;
  {
  	int unit;
  
  	unit = self->dv_unit;
  	printf(": (%s)\n", vme_info[unit].name);
  
  	/* We know ca_bustype == BUS_VMExx */
  	(void) config_search(bus_scan, self, args);
  }
  