1/* $NetBSD: mainbus.c,v 1.4 2021/08/07 16:18:51 thorpej Exp $ */
2
3/*-
4 * Copyright (c) 2021 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Simon Burge.
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 1.4 2021/08/07 16:18:51 thorpej Exp $");
34
35#include <sys/param.h>
36#include <sys/device.h>
37
38#include <evbmips/mipssim/autoconf.h>
39#include <evbmips/mipssim/mipssimreg.h>
40#include <evbmips/mipssim/mipssimvar.h>
41
42static int	mainbus_match(device_t, cfdata_t, void *);
43static void	mainbus_attach(device_t, device_t, void *);
44static int	mainbus_print(void *, const char *);
45
46CFATTACH_DECL_NEW(mainbus, 0,
47    mainbus_match, mainbus_attach, NULL, NULL);
48
49/* There can be only one. */
50static int	mainbus_found;
51
52struct mainbusdev {
53	const char *md_name;
54	paddr_t md_addr;
55	int md_irq;
56};
57
58static struct mainbusdev mainbusdevs[] = {
59	{ "cpu",					},
60	{ "com",	MIPSSIM_UART0_ADDR,	2	},
61#ifdef notyet
62	{ "mipsnet",	MIPSSIM_MIPSNET0_ADDR,	0	},
63#endif
64	{ NULL,		}
65};
66
67static int
68mainbus_match(device_t parent, cfdata_t match, void *aux)
69{
70
71	if (mainbus_found)
72		return (0);
73
74	return (1);
75}
76
77static void
78mainbus_attach(device_t parent, device_t self, void *aux)
79{
80	struct mainbus_attach_args maa;
81	struct mipssim_config *mcp = &mipssim_configuration;
82	const struct mainbusdev *md;
83
84	mainbus_found = 1;
85	printf("\n");
86
87	/* attach children */
88	for (md = mainbusdevs; md->md_name != NULL; md++) {
89		maa.ma_name = md->md_name;
90		maa.ma_addr = md->md_addr;
91		maa.ma_irq = md->md_irq;
92		maa.ma_iot = &mcp->mc_iot;
93		maa.ma_dmat = &mcp->mc_dmat;
94		config_found(self, &maa, mainbus_print, CFARGS_NONE);
95	}
96
97	/* attach virtio children */
98	for (int i = 0; i < VIRTIO_NUM_TRANSPORTS; i++) {
99		maa.ma_name = "virtio";
100		maa.ma_addr = MIPSSIM_VIRTIO_ADDR + VIRTIO_STRIDE * i;
101		maa.ma_irq  = 1;
102		maa.ma_iot  = &mcp->mc_iot;
103		maa.ma_dmat = &mcp->mc_dmat;
104		config_found(self, &maa, mainbus_print, CFARGS_NONE);
105	}
106}
107
108static int
109mainbus_print(void *aux, const char *pnp)
110{
111
112	return (QUIET);
113}
114