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intio.c revision 1.1 
      1 /*	$NetBSD: intio.c,v 1.1 1996/12/17 08:41:15 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1996 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
     30  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 /*
     40  * Autoconfiguration support for hp300 internal i/o space.
     41  */
     42 
     43 #include <sys/param.h>
     44 #include <sys/systm.h>
     45 #include <sys/device.h>
     46 
     47 #include <hp300/dev/intiovar.h>
     48 
     49 int	intiomatch __P((struct device *, struct cfdata *, void *));
     50 void	intioattach __P((struct device *, struct device *, void *));
     51 int	intioprint __P((void *, const char *));
     52 int	intiosearch __P((struct device *, struct cfdata *, void *));
     53 
     54 struct cfattach intio_ca = {
     55 	sizeof(struct device), intiomatch, intioattach
     56 };
     57 
     58 struct cfdriver intio_cd = {
     59 	NULL, "intio", DV_DULL
     60 };
     61 
     62 int
     63 intiomatch(parent, match, aux)
     64 	struct device *parent;
     65 	struct cfdata *match;
     66 	void *aux;
     67 {
     68 	static int intio_matched = 0;
     69 
     70 	/* Allow only one instance. */
     71 	if (intio_matched)
     72 		return (0);
     73 
     74 	intio_matched = 1;
     75 	return (1);
     76 }
     77 
     78 void
     79 intioattach(parent, self, aux)
     80 	struct device *parent, *self;
     81 	void *aux;
     82 {
     83 
     84 	printf("\n");
     85 
     86 	/* Search for and attach children. */
     87 	config_search(intiosearch, self, NULL);
     88 }
     89 
     90 int
     91 intioprint(aux, pnp)
     92 	void *aux;
     93 	const char *pnp;
     94 {
     95 	struct intio_attach_args *ia = aux;
     96 
     97 	if (ia->ia_addr != 0)
     98 		printf(" addr %p", ia->ia_addr);
     99 	return (UNCONF);
    100 }
    101 
    102 int
    103 intiosearch(parent, cf, aux)
    104 	struct device *parent;
    105 	struct cfdata *cf;
    106 	void *aux;
    107 {
    108 	struct intio_attach_args ia;
    109 
    110 	bzero(&ia, sizeof(ia));
    111 	if ((*cf->cf_attach->ca_match)(parent, cf, &ia) > 0)
    112 		config_attach(parent, cf, &ia, intioprint);
    113 	return (0);
    114 }
    115