1/* $NetBSD: mainbus.c,v 1.17 2011/06/05 17:03:16 matt Exp $ */
2
3/*
4 * Copyright (c) 1994,1995 Mark Brinicombe.
5 * Copyright (c) 1994 Brini.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by Brini.
19 * 4. The name of the company nor the name of the author may be used to
20 *    endorse or promote products derived from this software without specific
21 *    prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
27 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
28 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
29 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 * RiscBSD kernel project
36 *
37 * mainbus.c
38 *
39 * mainbus configuration
40 *
41 * Created      : 15/12/94
42 */
43
44#include <sys/cdefs.h>
45__KERNEL_RCSID(0, "$NetBSD: mainbus.c,v 1.17 2011/06/05 17:03:16 matt Exp $");
46
47#include <sys/param.h>
48#include <sys/systm.h>
49#include <sys/kernel.h>
50#include <sys/conf.h>
51#include <sys/malloc.h>
52#include <sys/device.h>
53
54#if defined(arm32)		/* XXX */
55#include <machine/io.h>
56#endif
57#include <sys/bus.h>
58#include <arm/mainbus/mainbus.h>
59#include "locators.h"
60
61/*
62 * mainbus is a root device so we a bus space tag to pass to children
63 *
64 * The tag is provided by mainbus_io.c and mainbus_io_asm.S
65 */
66
67extern struct bus_space mainbus_bs_tag;
68
69/* Prototypes for functions provided */
70
71static int  mainbusmatch(device_t, cfdata_t, void *);
72static void mainbusattach(device_t, device_t, void *);
73static int  mainbusprint(void *aux, const char *mainbus);
74static int  mainbussearch(device_t, cfdata_t,
75				const int *, void *);
76
77/* attach and device structures for the device */
78
79CFATTACH_DECL_NEW(mainbus, 0,
80    mainbusmatch, mainbusattach, NULL, NULL);
81
82/*
83 * int mainbusmatch(device_t parent, cfdata_t cf, void *aux)
84 *
85 * Always match for unit 0
86 */
87
88static int
89mainbusmatch(device_t parent, cfdata_t cf, void *aux)
90{
91	return (1);
92}
93
94/*
95 * int mainbusprint(void *aux, const char *mainbus)
96 *
97 * print routine used during config of children
98 */
99
100static int
101mainbusprint(void *aux, const char *mainbus)
102{
103	struct mainbus_attach_args *mb = aux;
104
105	if (mb->mb_iobase != MAINBUSCF_BASE_DEFAULT)
106		aprint_normal(" base 0x%x", mb->mb_iobase);
107	if (mb->mb_iosize > 1)
108		aprint_normal("-0x%x", mb->mb_iobase + mb->mb_iosize - 1);
109	if (mb->mb_irq != -1)
110		aprint_normal(" irq %d", mb->mb_irq);
111	if (mb->mb_drq != -1)
112		aprint_normal(" drq 0x%08x", mb->mb_drq);
113
114/* XXXX print flags */
115	return (QUIET);
116}
117
118/*
119 * int mainbussearch(device_t parent, device_t self, void *aux)
120 *
121 * search routine used during the config of children
122 */
123
124static int
125mainbussearch(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
126{
127	struct mainbus_attach_args mb;
128	int tryagain;
129
130	do {
131		if (cf->cf_loc[MAINBUSCF_BASE] == MAINBUSCF_BASE_DEFAULT) {
132			mb.mb_iobase = MAINBUSCF_BASE_DEFAULT;
133			mb.mb_iosize = 0;
134			mb.mb_drq = MAINBUSCF_DACK_DEFAULT;
135			mb.mb_irq = MAINBUSCF_IRQ_DEFAULT;
136		} else {
137			mb.mb_iobase = cf->cf_loc[MAINBUSCF_BASE];
138#if defined(arm32) && !defined(EB7500ATX)
139			mb.mb_iobase += IO_CONF_BASE;
140#endif
141			mb.mb_iosize = cf->cf_loc[MAINBUSCF_SIZE];
142			mb.mb_drq = cf->cf_loc[MAINBUSCF_DACK];
143			mb.mb_irq = cf->cf_loc[MAINBUSCF_IRQ];
144		}
145		mb.mb_iot = &mainbus_bs_tag;
146
147		tryagain = 0;
148		if (config_match(parent, cf, &mb) > 0) {
149			config_attach(parent, cf, &mb, mainbusprint);
150/*			tryagain = (cf->cf_fstate == FSTATE_STAR);*/
151		}
152	} while (tryagain);
153
154	return (0);
155}
156
157/*
158 * void mainbusattach(device_t parent, device_t self, void *aux)
159 *
160 * probe and attach all children
161 */
162
163static void
164mainbusattach(device_t parent, device_t self, void *aux)
165{
166	aprint_naive("\n");
167	aprint_normal("\n");
168
169	config_search_ia(mainbussearch, self, "mainbus", NULL);
170}
171
172/* End of mainbus.c */
173