xref: /netbsd-src/sys/arch/dreamcast/dev/g2/g2bus.c (revision 8ff6f65dafc58186614d149001c905dec4c934a2)
1 /*	$NetBSD: g2bus.c,v 1.17 2023/12/20 06:36:03 thorpej 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. All advertising materials mentioning features or use of this software
16  *    must display the following acknowledgement:
17  *	This product includes software developed by Marcus Comstedt.
18  * 4. Neither the name of The NetBSD Foundation nor the names of its
19  *    contributors may be used to endorse or promote products derived
20  *    from this software without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
23  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
24  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
25  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
26  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32  * POSSIBILITY OF SUCH DAMAGE.
33  */
34 
35 
36 #include <sys/cdefs.h>
37 __KERNEL_RCSID(0, "$NetBSD: g2bus.c,v 1.17 2023/12/20 06:36:03 thorpej Exp $");
38 
39 #include <sys/param.h>
40 #include <sys/systm.h>
41 #include <sys/kernel.h>
42 #include <sys/conf.h>
43 #include <sys/device.h>
44 #include <sys/proc.h>
45 
46 #include <dreamcast/dev/g2/g2busvar.h>
47 
48 int	g2busmatch(device_t, cfdata_t, void *);
49 void	g2busattach(device_t, device_t, void *);
50 int	g2busprint(void *, const char *);
51 
52 CFATTACH_DECL_NEW(g2bus, sizeof(struct g2bus_softc),
53     g2busmatch, g2busattach, NULL, NULL);
54 
55 int	g2bussearch(device_t, cfdata_t, const int *, void *);
56 
57 int
g2busmatch(device_t parent,cfdata_t cf,void * aux)58 g2busmatch(device_t parent, cfdata_t cf, void *aux)
59 {
60 
61 	return 1;
62 }
63 
64 void
g2busattach(device_t parent,device_t self,void * aux)65 g2busattach(device_t parent, device_t self, void *aux)
66 {
67 	struct g2bus_softc *sc = device_private(self);
68 	struct g2bus_attach_args ga;
69 
70 	sc->sc_dev = self;
71 	printf("\n");
72 
73 	TAILQ_INIT(&sc->sc_subdevs);
74 
75 	g2bus_bus_mem_init(sc);
76 
77 	ga.ga_memt = &sc->sc_memt;
78 
79 	config_search(self, &ga,
80 	    CFARGS(.search = g2bussearch));
81 }
82 
83 int
g2busprint(void * aux,const char * pnp)84 g2busprint(void *aux, const char *pnp)
85 {
86 
87 	return UNCONF;
88 }
89 
90 int
g2bussearch(device_t parent,cfdata_t cf,const int * ldesc,void * aux)91 g2bussearch(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
92 {
93 
94 	if (config_probe(parent, cf, aux))
95 		config_attach(parent, cf, aux, g2busprint, CFARGS_NONE);
96 
97 	return 0;
98 }
99