zbbus.c revision 1.7 
1/* $NetBSD: zbbus.c,v 1.7 2003/02/07 17:46:13 cgd 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.  The "Broadcom Corporation" name may not be
19 *    used to endorse or promote products derived from this software
20 *    without the prior written permission of Broadcom Corporation.
21 *
22 * 3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR IMPLIED
23 *    WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES OF
24 *    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
25 *    NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM BE LIABLE
26 *    FOR ANY DAMAGES WHATSOEVER, AND IN PARTICULAR, BROADCOM SHALL NOT BE
27 *    LIABLE FOR DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28 *    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29 *    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
30 *    BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
31 *    WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
32 *    OR OTHERWISE), EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 */
34
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/device.h>
38
39#include <mips/sibyte/include/zbbusvar.h>
40
41#include "locators.h"
42
43static int	zbbus_match(struct device *, struct cfdata *, void *);
44static void	zbbus_attach(struct device *, struct device *, void *);
45
46CFATTACH_DECL(zbbus, sizeof(struct device),
47    zbbus_match, zbbus_attach, NULL, NULL);
48
49static int	zbbus_print(void *, const char *);
50static int	zbbus_submatch(struct device *, struct cfdata *, void *);
51static const char *zbbus_entity_type_name(enum zbbus_entity_type type);
52
53static int	zbbus_attached;
54
55static const struct zbbus_attach_locs sb1250_zbbus_devs[] = {
56	{	0, 	ZBBUS_ENTTYPE_CPU	},
57	{	1, 	ZBBUS_ENTTYPE_CPU	},
58	{	4, 	ZBBUS_ENTTYPE_SCD	},
59	{	2, 	ZBBUS_ENTTYPE_BRZ	},
60	{	3, 	ZBBUS_ENTTYPE_OBIO	},
61};
62static const int sb1250_zbbus_dev_count =
63    sizeof sb1250_zbbus_devs / sizeof sb1250_zbbus_devs[0];
64
65static int
66zbbus_match(struct device *parent, struct cfdata *match, void *aux)
67{
68
69	if (zbbus_attached)
70		return (0);
71	return 1;
72}
73
74static void
75zbbus_attach(struct device *parent, struct device *self, void *aux)
76{
77	struct zbbus_attach_args za;
78	int i;
79
80	printf("\n");
81	zbbus_attached = 1;
82
83	sb1250_icu_init();
84
85	for (i = 0; i < sb1250_zbbus_dev_count; i++) {
86		memset(&za, 0, sizeof za);
87		za.za_locs = sb1250_zbbus_devs[i];
88		config_found_sm(self, &za, zbbus_print, zbbus_submatch);
89	}
90
91	return;
92}
93
94int
95zbbus_print(void *aux, const char *pnp)
96{
97	struct zbbus_attach_args *zap = aux;
98
99	if (pnp)
100		aprint_normal("%s at %s",
101		    zbbus_entity_type_name(zap->za_locs.za_type), pnp);
102	aprint_normal(" busid %d", zap->za_locs.za_busid);
103	return (UNCONF);
104}
105
106static int
107zbbus_submatch(struct device *parent, struct cfdata *cf, void *aux)
108{
109	struct zbbus_attach_args *zap = aux;
110
111	if (cf->cf_loc[ZBBUSCF_BUSID] != ZBBUSCF_BUSID_DEFAULT &&
112	    cf->cf_loc[ZBBUSCF_BUSID] != zap->za_locs.za_busid)
113		return (0);
114
115	return (config_match(parent, cf, aux));
116}
117
118static const char *
119zbbus_entity_type_name(enum zbbus_entity_type type)
120{
121
122	switch (type) {
123	case ZBBUS_ENTTYPE_CPU:
124		return ("cpu");
125	case ZBBUS_ENTTYPE_SCD:
126		return ("sbscd");
127	case ZBBUS_ENTTYPE_BRZ:
128		return ("sbbrz");
129	case ZBBUS_ENTTYPE_OBIO:
130		return ("sbobio");
131	}
132	panic("zbbus_entity_type_name");
133	return ("panic");
134}
135