1/* $NetBSD: zbbus.c,v 1.4 2021/08/07 16:18:52 thorpej 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/cdefs.h>
36__KERNEL_RCSID(0, "$NetBSD: zbbus.c,v 1.4 2021/08/07 16:18:52 thorpej Exp $");
37
38#include <sys/param.h>
39#include <sys/systm.h>
40#include <sys/device.h>
41
42#include <mips/sibyte/include/zbbusvar.h>
43
44#include <evbmips/sbmips/systemsw.h>
45
46#include "locators.h"
47
48static int	zbbus_match(device_t, cfdata_t, void *);
49static void	zbbus_attach(device_t, device_t, void *);
50
51CFATTACH_DECL_NEW(zbbus, 0,
52    zbbus_match, zbbus_attach, NULL, NULL);
53
54static int	zbbus_print(void *, const char *);
55static int	zbbus_submatch(device_t, cfdata_t, const int *, void *);
56static const char *zbbus_entity_type_name(enum zbbus_entity_type type);
57
58static int	zbbus_attached;
59
60static const struct zbbus_attach_locs sb1250_zbbus_devs[] = {
61	{	0, 	ZBBUS_ENTTYPE_CPU	},
62	{	1, 	ZBBUS_ENTTYPE_CPU	},
63	{	4, 	ZBBUS_ENTTYPE_SCD	},
64	{	2, 	ZBBUS_ENTTYPE_BRZ	},
65	{	3, 	ZBBUS_ENTTYPE_OBIO	},
66};
67static const int sb1250_zbbus_dev_count =
68    sizeof sb1250_zbbus_devs / sizeof sb1250_zbbus_devs[0];
69
70static int
71zbbus_match(device_t parent, cfdata_t match, void *aux)
72{
73
74	if (zbbus_attached)
75		return (0);
76	return 1;
77}
78
79static void
80zbbus_attach(device_t parent, device_t self, void *aux)
81{
82	struct zbbus_attach_args za;
83	int i;
84
85	printf("\n");
86	zbbus_attached = 1;
87
88	sb1250_icu_init();
89
90	for (i = 0; i < sb1250_zbbus_dev_count; i++) {
91		memset(&za, 0, sizeof za);
92		za.za_locs = sb1250_zbbus_devs[i];
93		config_found(self, &za, zbbus_print,
94		    CFARGS(.submatch = zbbus_submatch));
95	}
96
97	return;
98}
99
100int
101zbbus_print(void *aux, const char *pnp)
102{
103	struct zbbus_attach_args *zap = aux;
104
105	if (pnp)
106		aprint_normal("%s at %s",
107		    zbbus_entity_type_name(zap->za_locs.za_type), pnp);
108	aprint_normal(" busid %d", zap->za_locs.za_busid);
109	return (UNCONF);
110}
111
112static int
113zbbus_submatch(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
114{
115	struct zbbus_attach_args *zap = aux;
116
117	if (cf->cf_loc[ZBBUSCF_BUSID] != ZBBUSCF_BUSID_DEFAULT &&
118	    cf->cf_loc[ZBBUSCF_BUSID] != zap->za_locs.za_busid)
119		return (0);
120
121	return (config_match(parent, cf, aux));
122}
123
124static const char *
125zbbus_entity_type_name(enum zbbus_entity_type type)
126{
127
128	switch (type) {
129	case ZBBUS_ENTTYPE_CPU:
130		return ("cpu");
131	case ZBBUS_ENTTYPE_SCD:
132		return ("sbscd");
133	case ZBBUS_ENTTYPE_BRZ:
134		return ("sbbrz");
135	case ZBBUS_ENTTYPE_OBIO:
136		return ("sbobio");
137	}
138	panic("zbbus_entity_type_name");
139	return ("panic");
140}
141