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intio.c revision 1.10 
      1 /*	$NetBSD: intio.c,v 1.10 2005/06/30 17:03:53 drochner 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 FOUNDATION OR CONTRIBUTORS
     30  * BE 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 next68k internal i/o space.
     41  */
     42 
     43 #include <sys/cdefs.h>
     44 __KERNEL_RCSID(0, "$NetBSD: intio.c,v 1.10 2005/06/30 17:03:53 drochner Exp $");
     45 
     46 #include <sys/param.h>
     47 #include <sys/systm.h>
     48 #include <sys/device.h>
     49 #include <sys/reboot.h>
     50 
     51 #include <machine/autoconf.h>
     52 
     53 #include <next68k/dev/intiovar.h>
     54 
     55 int	intiomatch(struct device *, struct cfdata *, void *);
     56 void	intioattach(struct device *, struct device *, void *);
     57 int	intioprint(void *, const char *);
     58 int	intiosearch(struct device *, struct cfdata *,
     59 		    const locdesc_t *, void *);
     60 
     61 CFATTACH_DECL(intio, sizeof(struct device),
     62     intiomatch, intioattach, NULL, NULL);
     63 
     64 #if 0
     65 struct cfdriver intio_cd = {
     66 	NULL, "intio", DV_DULL
     67 };
     68 #endif
     69 
     70 static int intio_attached = 0;
     71 
     72 int
     73 intiomatch(struct device *parent, struct cfdata *match, void *aux)
     74 {
     75 	/* Allow only one instance. */
     76 	if (intio_attached)
     77 		return (0);
     78 
     79 	return (1);
     80 }
     81 
     82 void
     83 intioattach(struct device *parent, struct device *self, void *aux)
     84 {
     85 
     86 	printf("\n");
     87 
     88 	/* Search for and attach children. */
     89 	config_search_ia(intiosearch, self, "intio", aux);
     90 
     91 	intio_attached = 1;
     92 }
     93 
     94 int
     95 intioprint(void *aux, const char *pnp)
     96 {
     97 	struct intio_attach_args *ia = aux;
     98 
     99 	if (ia->ia_addr)
    100 		aprint_normal(" addr %p", ia->ia_addr);
    101 
    102 	return (UNCONF);
    103 }
    104 
    105 int
    106 intiosearch(struct device *parent, struct cfdata *cf,
    107 	    const locdesc_t *ldesc, void *aux)
    108 {
    109 	struct mainbus_attach_args *mba = (struct mainbus_attach_args *) aux;
    110 	struct intio_attach_args ia;
    111 
    112 	do {
    113 		ia.ia_addr = NULL;
    114 		ia.ia_bst = NEXT68K_INTIO_BUS_SPACE;
    115 		ia.ia_dmat = mba->mba_dmat;
    116 
    117 		if (config_match(parent, cf, &ia) == 0)
    118 			break;
    119 		config_attach(parent, cf, &ia, intioprint);
    120 	} while (cf->cf_fstate == FSTATE_STAR);
    121 
    122 	return (0);
    123 }
    124