1 /* $NetBSD: mainbus.c,v 1.24 2022/09/27 06:36:42 skrll Exp $ */
2
3 /*
4 * Copyright (c) 1994,1995 Mark Brinicombe.
5 * Copyright (c) 1994 Brini.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by Brini.
19 * 4. The name of the company nor the name of the author may be used to
20 * endorse or promote products derived from this software without specific
21 * prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
27 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
28 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
29 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 * RiscBSD kernel project
36 *
37 * mainbus.c
38 *
39 * mainbus configuration
40 *
41 * Created : 15/12/94
42 */
43
44 #include <sys/cdefs.h>
45 __KERNEL_RCSID(0, "$NetBSD: mainbus.c,v 1.24 2022/09/27 06:36:42 skrll Exp $");
46
47 #include <sys/param.h>
48 #include <sys/systm.h>
49 #include <sys/kernel.h>
50 #include <sys/conf.h>
51 #include <sys/device.h>
52
53 #if defined(arm32) /* XXX */
54 #include <machine/io.h>
55 #endif
56 #include <sys/bus.h>
57 #include <arm/mainbus/mainbus.h>
58 #include "locators.h"
59
60 /*
61 * mainbus is a root device so we a bus space tag to pass to children
62 *
63 * The tag is provided by mainbus_io.c and mainbus_io_asm.S
64 */
65
66 extern struct bus_space mainbus_bs_tag;
67
68 /* Prototypes for functions provided */
69
70 static int mainbusmatch(device_t, cfdata_t, void *);
71 static void mainbusattach(device_t, device_t, void *);
72 static int mainbusprint(void *aux, const char *mainbus);
73 static int mainbussearch(device_t, cfdata_t,
74 const int *, void *);
75
76 /* attach and device structures for the device */
77
78 CFATTACH_DECL_NEW(mainbus, 0,
79 mainbusmatch, mainbusattach, NULL, NULL);
80
81 /*
82 * int mainbusmatch(device_t parent, cfdata_t cf, void *aux)
83 *
84 * Always match for unit 0
85 */
86
87 static int
mainbusmatch(device_t parent,cfdata_t cf,void * aux)88 mainbusmatch(device_t parent, cfdata_t cf, void *aux)
89 {
90 return (1);
91 }
92
93 /*
94 * int mainbusprint(void *aux, const char *mainbus)
95 *
96 * print routine used during config of children
97 */
98
99 static int
mainbusprint(void * aux,const char * mainbus)100 mainbusprint(void *aux, const char *mainbus)
101 {
102 struct mainbus_attach_args *mb = aux;
103
104 if (mb->mb_iobase != MAINBUSCF_BASE_DEFAULT)
105 aprint_normal(" base 0x%x", mb->mb_iobase);
106 if (mb->mb_iosize > 1)
107 aprint_normal("-0x%x", mb->mb_iobase + mb->mb_iosize - 1);
108 if (mb->mb_irq != -1)
109 aprint_normal(" irq %d", mb->mb_irq);
110 if (mb->mb_drq != -1)
111 aprint_normal(" drq 0x%08x", mb->mb_drq);
112 if (mb->mb_core != MAINBUSCF_CORE_DEFAULT)
113 aprint_normal(" core %d", mb->mb_core);
114
115 /* XXXX print flags */
116 return (QUIET);
117 }
118
119 /*
120 * int mainbussearch(device_t parent, device_t self, void *aux)
121 *
122 * search routine used during the config of children
123 */
124
125 static int
mainbussearch(device_t parent,cfdata_t cf,const int * ldesc,void * aux)126 mainbussearch(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
127 {
128 struct mainbus_attach_args mb;
129 int tryagain;
130
131 do {
132 if (cf->cf_loc[MAINBUSCF_BASE] == MAINBUSCF_BASE_DEFAULT) {
133 mb.mb_iobase = MAINBUSCF_BASE_DEFAULT;
134 mb.mb_iosize = 0;
135 mb.mb_drq = MAINBUSCF_DACK_DEFAULT;
136 mb.mb_irq = MAINBUSCF_IRQ_DEFAULT;
137 } else {
138 mb.mb_iobase = cf->cf_loc[MAINBUSCF_BASE];
139 #if defined(arm32) && !defined(EB7500ATX)
140 mb.mb_iobase += IO_CONF_BASE;
141 #endif
142 mb.mb_iosize = cf->cf_loc[MAINBUSCF_SIZE];
143 mb.mb_drq = cf->cf_loc[MAINBUSCF_DACK];
144 mb.mb_irq = cf->cf_loc[MAINBUSCF_IRQ];
145 }
146 mb.mb_core = cf->cf_loc[MAINBUSCF_CORE];
147 mb.mb_intrbase = cf->cf_loc[MAINBUSCF_INTRBASE];
148 mb.mb_iot = &mainbus_bs_tag;
149
150 tryagain = 0;
151 if (config_probe(parent, cf, &mb)) {
152 config_attach(parent, cf, &mb, mainbusprint, CFARGS_NONE);
153 #ifdef MULTIPROCESSOR
154 tryagain = (cf->cf_fstate == FSTATE_STAR);
155 #endif
156 }
157 } while (tryagain);
158
159 return (0);
160 }
161
162 /*
163 * void mainbusattach(device_t parent, device_t self, void *aux)
164 *
165 * probe and attach all children
166 */
167
168 static void
mainbusattach(device_t parent,device_t self,void * aux)169 mainbusattach(device_t parent, device_t self, void *aux)
170 {
171 aprint_naive("\n");
172 aprint_normal("\n");
173
174 config_search(self, NULL,
175 CFARGS(.search = mainbussearch));
176 }
177
178 /* End of mainbus.c */
179