zbbus.c revision 1.1 
1/* $NetBSD: zbbus.c,v 1.1 2017/07/24 08:56:29 mrg 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 1.1 2017/07/24 08:56:29 mrg 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 "locators.h"
45
46static int	zbbus_match(device_t, cfdata_t, void *);
47static void	zbbus_attach(device_t, device_t, void *);
48
49CFATTACH_DECL_NEW(zbbus, 0,
50    zbbus_match, zbbus_attach, NULL, NULL);
51
52static int	zbbus_print(void *, const char *);
53static int	zbbus_submatch(device_t, cfdata_t, const int *, void *);
54static const char *zbbus_entity_type_name(enum zbbus_entity_type type);
55
56static int	zbbus_attached;
57
58static const struct zbbus_attach_locs sb1250_zbbus_devs[] = {
59	{	0, 	ZBBUS_ENTTYPE_CPU	},
60	{	1, 	ZBBUS_ENTTYPE_CPU	},
61	{	4, 	ZBBUS_ENTTYPE_SCD	},
62	{	2, 	ZBBUS_ENTTYPE_BRZ	},
63	{	3, 	ZBBUS_ENTTYPE_OBIO	},
64};
65static const int sb1250_zbbus_dev_count =
66    sizeof sb1250_zbbus_devs / sizeof sb1250_zbbus_devs[0];
67
68static int
69zbbus_match(device_t parent, cfdata_t match, void *aux)
70{
71
72	if (zbbus_attached)
73		return (0);
74	return 1;
75}
76
77static void
78zbbus_attach(device_t parent, device_t self, void *aux)
79{
80	struct zbbus_attach_args za;
81	int i;
82
83	printf("\n");
84	zbbus_attached = 1;
85
86	sb1250_icu_init();
87
88	for (i = 0; i < sb1250_zbbus_dev_count; i++) {
89		memset(&za, 0, sizeof za);
90		za.za_locs = sb1250_zbbus_devs[i];
91		config_found_sm_loc(self, "zbbus", NULL, &za, zbbus_print,
92				    zbbus_submatch);
93	}
94
95	return;
96}
97
98int
99zbbus_print(void *aux, const char *pnp)
100{
101	struct zbbus_attach_args *zap = aux;
102
103	if (pnp)
104		aprint_normal("%s at %s",
105		    zbbus_entity_type_name(zap->za_locs.za_type), pnp);
106	aprint_normal(" busid %d", zap->za_locs.za_busid);
107	return (UNCONF);
108}
109
110static int
111zbbus_submatch(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
112{
113	struct zbbus_attach_args *zap = aux;
114
115	if (cf->cf_loc[ZBBUSCF_BUSID] != ZBBUSCF_BUSID_DEFAULT &&
116	    cf->cf_loc[ZBBUSCF_BUSID] != zap->za_locs.za_busid)
117		return (0);
118
119	return (config_match(parent, cf, aux));
120}
121
122static const char *
123zbbus_entity_type_name(enum zbbus_entity_type type)
124{
125
126	switch (type) {
127	case ZBBUS_ENTTYPE_CPU:
128		return ("cpu");
129	case ZBBUS_ENTTYPE_SCD:
130		return ("sbscd");
131	case ZBBUS_ENTTYPE_BRZ:
132		return ("sbbrz");
133	case ZBBUS_ENTTYPE_OBIO:
134		return ("sbobio");
135	}
136	panic("zbbus_entity_type_name");
137	return ("panic");
138}
139