zbbus.c revision 1.1 
1/* $NetBSD: zbbus.c,v 1.1 2002/03/06 02:13:52 simonb Exp $ */
2
3/*
4 * Copyright 2000, 2001
5 * Broadcom Corporation. All rights reserved.
6 *
7 * This software is furnished under license and may be used and copied only
8 * in accordance with the following terms and conditions.  Subject to these
9 * conditions, you may download, copy, install, use, modify and distribute
10 * modified or unmodified copies of this software in source and/or binary
11 * form. No title or ownership is transferred hereby.
12 *
13 * 1) Any source code used, modified or distributed must reproduce and
14 *    retain this copyright notice and list of conditions as they appear in
15 *    the source file.
16 *
17 * 2) No right is granted to use any trade name, trademark, or logo of
18 *    Broadcom Corporation. Neither the "Broadcom Corporation" name nor any
19 *    trademark or logo of Broadcom Corporation may be used to endorse or
20 *    promote products derived from this software without the prior written
21 *    permission of Broadcom Corporation.
22 *
23 * 3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR IMPLIED
24 *    WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES OF
25 *    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
26 *    NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM BE LIABLE
27 *    FOR ANY DAMAGES WHATSOEVER, AND IN PARTICULAR, BROADCOM SHALL NOT BE
28 *    LIABLE FOR DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 *    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 *    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
31 *    BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
32 *    WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
33 *    OR OTHERWISE), EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 */
35
36#include <sys/param.h>
37#include <sys/systm.h>
38#include <sys/device.h>
39
40#include <mips/sibyte/include/zbbusvar.h>
41
42#include "locators.h"
43
44static int	zbbus_match(struct device *, struct cfdata *, void *);
45static void	zbbus_attach(struct device *, struct device *, void *);
46
47struct cfattach zbbus_ca = {
48	sizeof(struct device), zbbus_match, zbbus_attach
49};
50
51static int	zbbus_print(void *, const char *);
52static int	zbbus_submatch(struct device *, struct cfdata *, void *);
53static const char *zbbus_entity_type_name(enum zbbus_entity_type type);
54
55static int	zbbus_attached;
56
57static const struct zbbus_attach_locs sb1250_zbbus_devs[] = {
58	{	0, 	ZBBUS_ENTTYPE_CPU	},
59	{	1, 	ZBBUS_ENTTYPE_CPU	},
60	{	4, 	ZBBUS_ENTTYPE_SCD	},
61	{	2, 	ZBBUS_ENTTYPE_BRZ	},
62	{	3, 	ZBBUS_ENTTYPE_OBIO	},
63};
64static const int sb1250_zbbus_dev_count =
65    sizeof sb1250_zbbus_devs / sizeof sb1250_zbbus_devs[0];
66
67static int
68zbbus_match(struct device *parent, struct cfdata *match, void *aux)
69{
70
71	if (zbbus_attached)
72		return (0);
73	return 1;
74}
75
76static void
77zbbus_attach(struct device *parent, struct device *self, void *aux)
78{
79	struct zbbus_attach_args za;
80	int i;
81
82	printf("\n");
83	zbbus_attached = 1;
84
85	sb1250_icu_init();
86
87	for (i = 0; i < sb1250_zbbus_dev_count; i++) {
88		memset(&za, 0, sizeof za);
89		za.za_locs = sb1250_zbbus_devs[i];
90		config_found_sm(self, &za, zbbus_print, zbbus_submatch);
91	}
92
93	return;
94}
95
96int
97zbbus_print(void *aux, const char *pnp)
98{
99	struct zbbus_attach_args *zap = aux;
100
101	if (pnp)
102		printf("%s at %s",
103	zbbus_entity_type_name(zap->za_locs.za_type), pnp);
104	printf(" busid %d", zap->za_locs.za_busid);
105	return (UNCONF);
106}
107
108static int
109zbbus_submatch(struct device *parent, struct cfdata *cf, void *aux)
110{
111	struct zbbus_attach_args *zap = aux;
112
113	if (cf->cf_loc[ZBBUSCF_BUSID] != ZBBUSCF_BUSID_DEFAULT &&
114	    cf->cf_loc[ZBBUSCF_BUSID] != zap->za_locs.za_busid)
115		return (0);
116
117	return ((*cf->cf_attach->ca_match)(parent, cf, aux));
118}
119
120static const char *
121zbbus_entity_type_name(enum zbbus_entity_type type)
122{
123
124	switch (type) {
125	case ZBBUS_ENTTYPE_CPU:
126		return ("cpu");
127	case ZBBUS_ENTTYPE_SCD:
128		return ("sbscd");
129	case ZBBUS_ENTTYPE_BRZ:
130		return ("sbbrz");
131	case ZBBUS_ENTTYPE_OBIO:
132		return ("sbobio");
133	}
134	panic("zbbus_entity_type_name");
135	return ("panic");
136}
137