1 /* $NetBSD: mainbus.c,v 1.20 2021/08/07 16:19:06 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 Gordon W. Ross.
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: mainbus.c,v 1.20 2021/08/07 16:19:06 thorpej Exp $");
34
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/device.h>
38
39 #include <machine/autoconf.h>
40
41 static int main_match(device_t, cfdata_t, void *);
42 static void main_attach(device_t, device_t, void *);
43
44 CFATTACH_DECL_NEW(mainbus, 0,
45 main_match, main_attach, NULL, NULL);
46
47 /*
48 * Probe for the mainbus; always succeeds.
49 */
50 static int
main_match(device_t parent,cfdata_t cf,void * aux)51 main_match(device_t parent, cfdata_t cf, void *aux)
52 {
53
54 return 1;
55 }
56
57 /*
58 * Do "direct" configuration for the bus types on mainbus.
59 * This controls the order of autoconfig for important things
60 * used early. For example, idprom is used by Ether drivers.
61 */
62 static void
main_attach(device_t parent,device_t self,void * args)63 main_attach(device_t parent, device_t self, void *args)
64 {
65 struct confargs ca;
66 int i;
67
68 aprint_normal("\n");
69
70 ca.ca_bustag = &mainbus_space_tag;
71 ca.ca_dmatag = &mainbus_dma_tag;
72 ca.ca_name = NULL;
73 ca.ca_paddr = -1;
74 ca.ca_intpri = -1;
75 ca.ca_intvec = -1;
76
77 for (i = 0; i < BUS__NTYPES; i++) {
78 ca.ca_bustype = i;
79 (void)config_found(self, &ca, NULL, CFARGS_NONE);
80 }
81 }
82