1 /* $NetBSD: mainbus.c,v 1.25 2021/08/07 16:18:42 thorpej Exp $ */
2 /* $OpenBSD: mainbus.c,v 1.4 1998/10/15 21:30:15 imp Exp $ */
3 /* NetBSD: mainbus.c,v 1.3 1995/06/28 02:45:10 cgd Exp */
4
5 /*
6 * Copyright (c) 1997 Per Fogelstrom.
7 * Copyright (c) 1994, 1995 Carnegie-Mellon University.
8 * All rights reserved.
9 *
10 * Author: Chris G. Demetriou
11 *
12 * Permission to use, copy, modify and distribute this software and
13 * its documentation is hereby granted, provided that both the copyright
14 * notice and this permission notice appear in all copies of the
15 * software, derivative works or modified versions, and any portions
16 * thereof, and that both notices appear in supporting documentation.
17 *
18 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
19 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
20 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
21 *
22 * Carnegie Mellon requests users of this software to return to
23 *
24 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
25 * School of Computer Science
26 * Carnegie Mellon University
27 * Pittsburgh PA 15213-3890
28 *
29 * any improvements or extensions that they make and grant Carnegie the
30 * rights to redistribute these changes.
31 */
32
33 #include <sys/cdefs.h>
34 __KERNEL_RCSID(0, "$NetBSD: mainbus.c,v 1.25 2021/08/07 16:18:42 thorpej Exp $");
35
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/device.h>
39
40 #include <machine/autoconf.h>
41 #include <machine/platform.h>
42
43 /* Definition of the mainbus driver. */
44 static int mbmatch(device_t, cfdata_t, void *);
45 static void mbattach(device_t, device_t, void *);
46 static int mbprint(void *, const char *);
47
48 CFATTACH_DECL_NEW(mainbus, 0,
49 mbmatch, mbattach, NULL, NULL);
50
51 static int mainbus_found;
52
53 static int
mbmatch(device_t parent,cfdata_t cf,void * aux)54 mbmatch(device_t parent, cfdata_t cf, void *aux)
55 {
56
57 if (mainbus_found)
58 return 0;
59
60 return 1;
61 }
62
63 static void
mbattach(device_t parent,device_t self,void * aux)64 mbattach(device_t parent, device_t self, void *aux)
65 {
66 struct confargs nca;
67 int i;
68
69 mainbus_found = 1;
70
71 aprint_normal("\n");
72
73 /*
74 * Try to find and attach all of the CPUs in the machine.
75 * ( Right now only one CPU so code is simple )
76 */
77
78 nca.ca_name = "cpu";
79 nca.ca_slot = 0;
80 nca.ca_offset = 0;
81 config_found(self, &nca, mbprint, CFARGS_NONE);
82
83 for (i = 0; platform->mainbusdevs[i] != NULL; i++) {
84 nca.ca_name = platform->mainbusdevs[i];
85 nca.ca_slot = 0;
86 nca.ca_offset = 0;
87 config_found(self, &nca, mbprint, CFARGS_NONE);
88 }
89 }
90
91 static int
mbprint(void * aux,const char * pnp)92 mbprint(void *aux, const char *pnp)
93 {
94
95 if (pnp)
96 return QUIET;
97 return UNCONF;
98 }
99