1/*	$NetBSD: obio.c,v 1.13 2021/08/07 16:18:49 thorpej Exp $	*/
2
3/*
4 * Copyright (c) 2001, 2002, 2003 Wasabi Systems, Inc.
5 * All rights reserved.
6 *
7 * Written by Jason R. Thorpe for Wasabi Systems, Inc.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 *    must display the following acknowledgement:
19 *	This product includes software developed for the NetBSD Project by
20 *	Wasabi Systems, Inc.
21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
22 *    or promote products derived from this software without specific prior
23 *    written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
36 */
37
38/*
39 * On-board device autoconfiguration support for ADI BRH
40 * evaluation boards.
41 */
42
43#include <sys/cdefs.h>
44__KERNEL_RCSID(0, "$NetBSD: obio.c,v 1.13 2021/08/07 16:18:49 thorpej Exp $");
45
46#include <sys/param.h>
47#include <sys/systm.h>
48#include <sys/device.h>
49
50#include <machine/autoconf.h>
51#include <sys/bus.h>
52
53#include <arm/xscale/beccreg.h>
54#include <arm/xscale/beccvar.h>
55
56#include <evbarm/adi_brh/brhreg.h>
57#include <evbarm/adi_brh/obiovar.h>
58
59#include "locators.h"
60
61int	obio_match(device_t, cfdata_t, void *);
62void	obio_attach(device_t, device_t, void *);
63
64CFATTACH_DECL_NEW(obio, 0,
65    obio_match, obio_attach, NULL, NULL);
66
67int	obio_print(void *, const char *);
68int	obio_search(device_t, cfdata_t, const int *, void *);
69
70/* there can be only one */
71bool	obio_found;
72
73int
74obio_match(device_t parent, cfdata_t cf, void *aux)
75{
76#if 0
77	struct mainbus_attach_args *ma = aux;
78#endif
79
80	if (obio_found)
81		return (0);
82
83#if 1
84	/* XXX Shoot arch/arm/mainbus in the head. */
85	return (1);
86#else
87	if (strcmp(cf->cf_name, ma->ma_name) == 0)
88		return (1);
89
90	return (0);
91#endif
92}
93
94void
95obio_attach(device_t parent, device_t self, void *aux)
96{
97
98	obio_found = true;
99
100	aprint_naive("\n");
101	aprint_normal("\n");
102
103	/*
104	 * Attach all on-board devices as described in the kernel
105	 * configuration file.
106	 */
107	config_search(self, NULL,
108	    CFARGS(.search = obio_search));
109}
110
111int
112obio_print(void *aux, const char *pnp)
113{
114	struct obio_attach_args *oba = aux;
115
116	aprint_normal(" addr 0x%08lx", oba->oba_addr);
117	if (oba->oba_size != OBIOCF_SIZE_DEFAULT)
118		aprint_normal("-0x%08lx", oba->oba_addr + (oba->oba_size - 1));
119	if (oba->oba_width != OBIOCF_WIDTH_DEFAULT)
120		aprint_normal(" width %d", oba->oba_width);
121	if (oba->oba_irq != OBIOCF_IRQ_DEFAULT)
122		aprint_normal(" irq %d", oba->oba_irq);
123
124	return (UNCONF);
125}
126
127int
128obio_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
129{
130	struct obio_attach_args oba;
131
132	oba.oba_st = &obio_bs_tag;
133
134	oba.oba_addr = cf->cf_loc[OBIOCF_ADDR];
135	oba.oba_size = cf->cf_loc[OBIOCF_SIZE];
136	oba.oba_width = cf->cf_loc[OBIOCF_WIDTH];
137	oba.oba_irq = cf->cf_loc[OBIOCF_IRQ];
138
139	if (config_probe(parent, cf, &oba))
140		config_attach(parent, cf, &oba, obio_print, CFARGS_NONE);
141
142	return (0);
143}
144