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      1 /*	$NetBSD: g2bus.c,v 1.18 2025/11/24 08:17:29 nia Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2001 Marcus Comstedt
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. Neither the name of The NetBSD Foundation nor the names of its
     16  *    contributors may be used to endorse or promote products derived
     17  *    from this software without specific prior written permission.
     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 
     33 #include <sys/cdefs.h>
     34 __KERNEL_RCSID(0, "$NetBSD: g2bus.c,v 1.18 2025/11/24 08:17:29 nia Exp $");
     35 
     36 #include <sys/param.h>
     37 #include <sys/systm.h>
     38 #include <sys/kernel.h>
     39 #include <sys/conf.h>
     40 #include <sys/device.h>
     41 #include <sys/proc.h>
     42 
     43 #include <dreamcast/dev/g2/g2busvar.h>
     44 
     45 int	g2busmatch(device_t, cfdata_t, void *);
     46 void	g2busattach(device_t, device_t, void *);
     47 int	g2busprint(void *, const char *);
     48 
     49 CFATTACH_DECL_NEW(g2bus, sizeof(struct g2bus_softc),
     50     g2busmatch, g2busattach, NULL, NULL);
     51 
     52 int	g2bussearch(device_t, cfdata_t, const int *, void *);
     53 
     54 int
     55 g2busmatch(device_t parent, cfdata_t cf, void *aux)
     56 {
     57 
     58 	return 1;
     59 }
     60 
     61 void
     62 g2busattach(device_t parent, device_t self, void *aux)
     63 {
     64 	struct g2bus_softc *sc = device_private(self);
     65 	struct g2bus_attach_args ga;
     66 
     67 	sc->sc_dev = self;
     68 	printf("\n");
     69 
     70 	TAILQ_INIT(&sc->sc_subdevs);
     71 
     72 	g2bus_bus_mem_init(sc);
     73 
     74 	ga.ga_memt = &sc->sc_memt;
     75 
     76 	config_search(self, &ga,
     77 	    CFARGS(.search = g2bussearch));
     78 }
     79 
     80 int
     81 g2busprint(void *aux, const char *pnp)
     82 {
     83 
     84 	return UNCONF;
     85 }
     86 
     87 int
     88 g2bussearch(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
     89 {
     90 
     91 	if (config_probe(parent, cf, aux))
     92 		config_attach(parent, cf, aux, g2busprint, CFARGS_NONE);
     93 
     94 	return 0;
     95 }
     96