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      1 /*      $NetBSD: clockport.c,v 1.8 2026/10/11 17:23:13 rkujawa Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2012 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Radoslaw Kujawa.
      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 
     34 #include <sys/param.h>
     35 #include <sys/device.h>
     36 #include <sys/termios.h>
     37 
     38 #include <sys/bus.h>
     39 #include <sys/intr.h>
     40 
     41 #include <amiga/clockport/clockportvar.h>
     42 
     43 static int	clockport_match(device_t, cfdata_t , void *);
     44 static void	clockport_attach(device_t, device_t, void *);
     45 static int	clockport_print(void *, const char *);
     46 static int	clockport_search(device_t, cfdata_t, const int *, void *);
     47 static int	clockport_rescan(device_t, const char *, const int *);
     48 static void	clockport_childdetached(device_t, device_t);
     49 
     50 CFATTACH_DECL3_NEW(clockport, sizeof(struct clockportbus_softc),
     51     clockport_match, clockport_attach, NULL, NULL, clockport_rescan,
     52     clockport_childdetached, 0);
     53 
     54 static int
     55 clockport_match(device_t parent, cfdata_t cf, void *aux)
     56 {
     57 	return 1;
     58 }
     59 
     60 static void
     61 clockport_attach(device_t parent, device_t self, void *aux)
     62 {
     63 	struct clockportbus_softc *sc;
     64 
     65         aprint_normal("\n");
     66 
     67 	sc = device_private(self);
     68 	sc->sc_dev = self;
     69 	sc->cpb_aa = *(struct clockportbus_attach_args *) aux;
     70 
     71 	clockport_rescan(self, NULL, NULL);
     72 }
     73 
     74 static int
     75 clockport_rescan(device_t self, const char *ifattr, const int *locs)
     76 {
     77 
     78 	config_search(self, NULL,
     79 	    CFARGS(.search = clockport_search));
     80 
     81 	return 0;
     82 }
     83 
     84 static void
     85 clockport_childdetached(device_t self, device_t child)
     86 {
     87 	struct clockportbus_softc *sc;
     88 
     89 	sc = device_private(self);
     90 
     91 	if (sc->sc_child == child)
     92 		sc->sc_child = NULL;
     93 }
     94 
     95 static int
     96 clockport_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
     97 {
     98 	struct clockportbus_softc *sc;
     99 	struct clockport_attach_args a;
    100 
    101 	sc = device_private(parent);
    102 
    103 	/* A clockport holds a single device. */
    104 	if (sc->sc_child != NULL)
    105 		return 0;
    106 
    107 	a.cp_iot = sc->cpb_aa.cp_iot;
    108 	a.cp_intr_establish = sc->cpb_aa.cp_intr_establish;
    109 	a.cp_intr_disestablish = sc->cpb_aa.cp_intr_disestablish;
    110 
    111 	if (config_probe(parent, cf, &a)) {
    112 		sc->sc_child = config_attach(parent, cf, &a, clockport_print,
    113 		    CFARGS_NONE);
    114 		return 1;
    115 	}
    116 
    117 	return 0;
    118 }
    119 
    120 static int
    121 clockport_print(void *aux, const char *str)
    122 {
    123 
    124         if (str == NULL)
    125                 return 0;
    126 
    127         printf("%s ", str);
    128 
    129         return 0;
    130 }
    131