1 /* $OpenBSD: mainbus.c,v 1.15 2022/03/13 08:04:13 mpi Exp $ */
2 /* $NetBSD: mainbus.c,v 1.27 1998/06/24 01:10:35 ross Exp $ */
3
4 /*
5 * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
6 * All rights reserved.
7 *
8 * Author: Chris G. Demetriou
9 *
10 * Permission to use, copy, modify and distribute this software and
11 * its documentation is hereby granted, provided that both the copyright
12 * notice and this permission notice appear in all copies of the
13 * software, derivative works or modified versions, and any portions
14 * thereof, and that both notices appear in supporting documentation.
15 *
16 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
17 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
18 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
19 *
20 * Carnegie Mellon requests users of this software to return to
21 *
22 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
23 * School of Computer Science
24 * Carnegie Mellon University
25 * Pittsburgh PA 15213-3890
26 *
27 * any improvements or extensions that they make and grant Carnegie the
28 * rights to redistribute these changes.
29 */
30
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/device.h>
34 #include <sys/reboot.h>
35 #include <sys/conf.h>
36
37 #include <machine/autoconf.h>
38 #include <machine/rpb.h>
39 #include <machine/cpuconf.h>
40
41 /* Definition of the mainbus driver. */
42 static int mbmatch(struct device *, void *, void *);
43 static void mbattach(struct device *, struct device *, void *);
44 static int mbprint(void *, const char *);
45
46 const struct cfattach mainbus_ca = {
47 sizeof(struct device), mbmatch, mbattach
48 };
49
50 struct cfdriver mainbus_cd = {
51 NULL, "mainbus", DV_DULL
52 };
53
54 /* There can be only one. */
55 int mainbus_found;
56
57 static int
mbmatch(parent,cf,aux)58 mbmatch(parent, cf, aux)
59 struct device *parent;
60 void *cf;
61 void *aux;
62 {
63
64 if (mainbus_found)
65 return (0);
66
67 return (1);
68 }
69
70 static void
mbattach(parent,self,aux)71 mbattach(parent, self, aux)
72 struct device *parent;
73 struct device *self;
74 void *aux;
75 {
76 struct mainbus_attach_args ma;
77 struct pcs *pcsp;
78 int i;
79
80 mainbus_found = 1;
81
82 printf("\n");
83
84 /*
85 * Try to find and attach all of the CPUs in the machine.
86 */
87 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) {
88 pcsp = LOCATE_PCS(hwrpb, i);
89 if ((pcsp->pcs_flags & PCS_PP) == 0)
90 continue;
91
92 ma.ma_name = "cpu";
93 ma.ma_slot = i;
94 config_found(self, &ma, mbprint);
95 }
96
97 if (platform.iobus != NULL) {
98 ma.ma_name = platform.iobus;
99 ma.ma_slot = 0; /* meaningless */
100 config_found(self, &ma, mbprint);
101 }
102 }
103
104 static int
mbprint(aux,pnp)105 mbprint(aux, pnp)
106 void *aux;
107 const char *pnp;
108 {
109 struct mainbus_attach_args *ma = aux;
110
111 if (pnp)
112 printf("%s at %s", ma->ma_name, pnp);
113
114 return (UNCONF);
115 }
116