sys/arch/mac68k/obio/obio.c

   1 /*      $NetBSD: obio.c,v 1.23 2005/12/11 12:18:03 christos 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  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 __KERNEL_RCSID(0, "$NetBSD: obio.c,v 1.23 2005/12/11 12:18:03 christos Exp $");
  34
  35 #include <sys/param.h>
  36 #include <sys/systm.h>
  37 #include <sys/device.h>
  38
  39 #include "locators.h"
  40
  41 #include <machine/autoconf.h>
  42
  43 #include <mac68k/obio/obiovar.h>
  44
  45 static int      obio_match(struct device *, struct cfdata *, void *);
  46 static void     obio_attach(struct device *, struct device *, void *);
  47 static int      obio_print(void *, const char *);
  48 static int      obio_search(struct device *, struct cfdata *,
  49                             const int *, void *);
  50
  51 CFATTACH_DECL(obio, sizeof(struct device),
  52     obio_match, obio_attach, NULL, NULL);
  53
  54 static int
  55 obio_match(struct device *parent, struct cfdata *cf, void *aux)
  56 {
  57         static int obio_matched = 0;
  58
  59         /* Allow only one instance. */
  60         if (obio_matched)
  61                 return (0);
  62
  63         obio_matched = 1;
  64         return (1);
  65 }
  66
  67 static void
  68 obio_attach(struct device *parent, struct device *self, void *aux)
  69 {
  70         printf("\n");
  71
  72         /* Search for and attach children. */
  73         config_search_ia(obio_search, self, "obio", aux);
  74 }
  75
  76 int
  77 obio_print(void *args, const char *name)
  78 {
  79         struct obio_attach_args *oa = (struct obio_attach_args *)args;
  80
  81         if (oa->oa_addr != (-1))
  82                 aprint_normal(" addr %x", oa->oa_addr);
  83
  84         return (UNCONF);
  85 }
  86
  87 int
  88 obio_search(struct device *parent, struct cfdata *cf,
  89             const int *ldesc, void *aux)
  90 {
  91         struct mainbus_attach_args *mba = (struct mainbus_attach_args *) aux;
  92         struct obio_attach_args oa;
  93
  94         oa.oa_addr = cf->cf_loc[OBIOCF_ADDR];
  95         oa.oa_tag = mba->mba_bst;
  96         oa.oa_dmat = mba->mba_dmat;
  97
  98         if (config_match(parent, cf, &oa) > 0)
  99                 config_attach(parent, cf, &oa, obio_print);
 100
 101         return (0);
 102 }