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
48 static int zbbus_match(device_t, cfdata_t, void *);
49 static void zbbus_attach(device_t, device_t, void *);
50
51 CFATTACH_DECL_NEW(zbbus, 0,
52 zbbus_match, zbbus_attach, NULL, NULL);
53
54 static int zbbus_print(void *, const char *);
55 static int zbbus_submatch(device_t, cfdata_t, const int *, void *);
56 static const char *zbbus_entity_type_name(enum zbbus_entity_type type);
57
58 static int zbbus_attached;
59
60 static 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 };
67 static const int sb1250_zbbus_dev_count =
68 sizeof sb1250_zbbus_devs / sizeof sb1250_zbbus_devs[0];
69
70 static int
zbbus_match(device_t parent,cfdata_t match,void * aux)71 zbbus_match(device_t parent, cfdata_t match, void *aux)
72 {
73
74 if (zbbus_attached)
75 return (0);
76 return 1;
77 }
78
79 static void
zbbus_attach(device_t parent,device_t self,void * aux)80 zbbus_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
100 int
zbbus_print(void * aux,const char * pnp)101 zbbus_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
112 static int
zbbus_submatch(device_t parent,cfdata_t cf,const int * ldesc,void * aux)113 zbbus_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
124 static const char *
zbbus_entity_type_name(enum zbbus_entity_type type)125 zbbus_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