1 /* $NetBSD: obio.c,v 1.27 2021/08/07 16:18:57 thorpej 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 1.27 2021/08/07 16:18:57 thorpej 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(device_t, cfdata_t, void *);
46 static void obio_attach(device_t, device_t, void *);
47 static int obio_print(void *, const char *);
48 static int obio_search(device_t, cfdata_t, const int *, void *);
49
50 CFATTACH_DECL_NEW(obio, 0,
51 obio_match, obio_attach, NULL, NULL);
52
53 static int
obio_match(device_t parent,cfdata_t cf,void * aux)54 obio_match(device_t parent, cfdata_t cf, void *aux)
55 {
56 static bool obio_matched;
57
58 /* Allow only one instance. */
59 if (obio_matched)
60 return (0);
61
62 obio_matched = true;
63 return (1);
64 }
65
66 static void
obio_attach(device_t parent,device_t self,void * aux)67 obio_attach(device_t parent, device_t self, void *aux)
68 {
69 printf("\n");
70
71 /* Search for and attach children. */
72 config_search(self, aux,
73 CFARGS(.search = obio_search));
74 }
75
76 int
obio_print(void * args,const char * name)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
obio_search(device_t parent,cfdata_t cf,const int * ldesc,void * aux)88 obio_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
89 {
90 struct mainbus_attach_args *mba = (struct mainbus_attach_args *) aux;
91 struct obio_attach_args oa;
92
93 oa.oa_addr = cf->cf_loc[OBIOCF_ADDR];
94 oa.oa_tag = mba->mba_bst;
95 oa.oa_dmat = mba->mba_dmat;
96
97 if (config_probe(parent, cf, &oa))
98 config_attach(parent, cf, &oa, obio_print, CFARGS_NONE);
99
100 return (0);
101 }
102