1 /* $NetBSD: mainbus.c,v 1.24 2024/01/18 05:12:29 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 2000 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Steve C. Woodford
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 /*
33 * Derived from the mainbus code in mvme68k/autoconf.c by Chuck Cranor.
34 */
35
36 #include <sys/cdefs.h>
37 __KERNEL_RCSID(0, "$NetBSD: mainbus.c,v 1.24 2024/01/18 05:12:29 thorpej Exp $");
38
39 #include "opt_mvmeconf.h"
40 #include "vmetwo.h"
41
42 #include <sys/param.h>
43 #include <sys/kernel.h>
44 #include <sys/systm.h>
45 #include <sys/device.h>
46
47 #define _MVME68K_BUS_DMA_PRIVATE
48 #define _MVME68K_BUS_SPACE_PRIVATE
49 #include <machine/bus.h>
50 #undef _MVME68K_BUS_DMA_PRIVATE
51 #undef _MVME68K_BUS_SPACE_PRIVATE
52 #include <machine/cpu.h>
53
54 #include <mvme68k/dev/mainbus.h>
55
56 #if defined(MVME162) || defined(MVME172) || defined(MVME167) || defined(MVME177)
57 #if NVMETWO == 0
58 #include <dev/vme/vmevar.h>
59 #include <dev/mvme/mvmebus.h>
60 #include <dev/mvme/vme_twovar.h>
61 #endif
62 #endif
63
64 void mainbus_attach(device_t, device_t, void *);
65 int mainbus_match(device_t, cfdata_t, void *);
66 int mainbus_print(void *, const char *);
67
68 CFATTACH_DECL_NEW(mainbus, 0,
69 mainbus_match, mainbus_attach, NULL, NULL);
70
71
72 struct mainbus_devices {
73 const char *md_name;
74 bus_addr_t md_offset;
75 };
76
77 #ifdef MVME147
78 static struct mainbus_devices mainbusdevs_147[] = {
79 {"pcc", MAINBUS_PCC_OFFSET},
80 {"timekeeper", MAINBUS_TK147_OFFSET},
81 {NULL, 0}
82 };
83 #endif
84
85 #if defined(MVME162) || defined(MVME167) || defined(MVME172) || defined(MVME177)
86 static struct mainbus_devices mainbusdevs_1x7[] = {
87 {"pcctwo", MAINBUS_PCCTWO_OFFSET},
88 {"vmetwo", MAINBUS_VMETWO_OFFSET},
89 {"timekeeper", MAINBUS_TIMEKEEPER_OFFSET},
90 {NULL, 0}
91 };
92 #endif
93
94 struct mvme68k_bus_dma_tag _mainbus_dma_tag = {
95 NULL,
96 _bus_dmamap_create,
97 _bus_dmamap_destroy,
98 _bus_dmamap_load_direct,
99 _bus_dmamap_load_mbuf_direct,
100 _bus_dmamap_load_uio_direct,
101 _bus_dmamap_load_raw_direct,
102 _bus_dmamap_unload,
103 NULL, /* Set up at run-time */
104 _bus_dmamem_alloc,
105 _bus_dmamem_free,
106 _bus_dmamem_map,
107 _bus_dmamem_unmap,
108 _bus_dmamem_mmap
109 };
110
111 struct mvme68k_bus_space_tag _mainbus_space_tag = {
112 NULL,
113 _bus_space_map,
114 _bus_space_unmap,
115 _bus_space_peek_1,
116 _bus_space_peek_2,
117 _bus_space_peek_4,
118 _bus_space_poke_1,
119 _bus_space_poke_2,
120 _bus_space_poke_4
121 };
122
123
124 /* ARGSUSED */
125 int
mainbus_match(device_t parent,cfdata_t cf,void * args)126 mainbus_match(device_t parent, cfdata_t cf, void *args)
127 {
128 static int mainbus_matched;
129
130 if (mainbus_matched)
131 return 0;
132
133 return (mainbus_matched = 1);
134 }
135
136 /* ARGSUSED */
137 void
mainbus_attach(device_t parent,device_t self,void * args)138 mainbus_attach(device_t parent, device_t self, void *args)
139 {
140 struct mainbus_attach_args ma;
141 struct mainbus_devices *devices;
142 int i;
143
144 printf("\n");
145
146 /*
147 * Attach children appropriate for this CPU.
148 */
149 switch (machineid) {
150 #ifdef MVME147
151 case MVME_147:
152 devices = mainbusdevs_147;
153 _mainbus_dma_tag._dmamap_sync = _bus_dmamap_sync_030;
154 break;
155 #endif
156
157 #if defined(MVME162) || defined(MVME167) || defined(MVME172) || defined(MVME177)
158 case MVME_162:
159 case MVME_167:
160 case MVME_172:
161 case MVME_177:
162 devices = mainbusdevs_1x7;
163 _mainbus_dma_tag._dmamap_sync = _bus_dmamap_sync_0460;
164 break;
165 #endif
166
167 default:
168 panic("mainbus_attach: impossible CPU type");
169 }
170
171 for (i = 0; devices[i].md_name != NULL; ++i) {
172 /*
173 * On mvme162 and up, if the kernel config file had no vmetwo0
174 * device, we have to do some manual initialisation on the
175 * VMEChip2 to get local interrupts working (ABORT switch,
176 * hardware assisted soft interrupts).
177 */
178 #if defined(MVME162) || defined(MVME172) || defined(MVME167) || defined(MVME177)
179 #if NVMETWO == 0
180 if (devices[i].md_offset == MAINBUS_VMETWO_OFFSET
181 #if defined(MVME147)
182 && machineid != MVME_147
183 #endif
184 ) {
185 (void)vmetwo_probe(&_mainbus_space_tag,
186 intiobase_phys + MAINBUS_VMETWO_OFFSET);
187 continue;
188 }
189 #endif
190 #endif
191 ma.ma_name = devices[i].md_name;
192 ma.ma_dmat = &_mainbus_dma_tag;
193 ma.ma_bust = &_mainbus_space_tag;
194 ma.ma_offset = devices[i].md_offset + intiobase_phys;
195
196 (void)config_found(self, &ma, mainbus_print, CFARGS_NONE);
197 }
198
199
200 /*
201 * Attach the memory controllers on mvme162->mvme177.
202 * Note: These *must* be attached after the PCCChip2/MCChip.
203 * They must also be attached *after* the VMEchip2 has been
204 * initialised (either by the driver, or the vmetwo_probe()
205 * call above).
206 */
207 #if defined(MVME162) || defined(MVME172) || defined(MVME167) || defined(MVME177)
208 #if defined(MVME147)
209 if (machineid != MVME_147)
210 #endif
211 {
212 ma.ma_name = "memc";
213 ma.ma_dmat = &_mainbus_dma_tag;
214 ma.ma_bust = &_mainbus_space_tag;
215 ma.ma_offset = MAINBUS_MEMC1_OFFSET + intiobase_phys;
216 (void)config_found(self, &ma, mainbus_print, CFARGS_NONE);
217 ma.ma_offset = MAINBUS_MEMC2_OFFSET + intiobase_phys;
218 (void)config_found(self, &ma, mainbus_print, CFARGS_NONE);
219 }
220 #endif
221
222 /*
223 * Attach Industry Pack modules on mvme162 and mvme172
224 */
225 #if defined(MVME162) || defined(MVME172)
226 #if defined(MVME147) || defined(MVME167) || defined(MVME177)
227 if (machineid == MVME_162 || machineid == MVME_172)
228 #endif
229 {
230 ma.ma_name = "ipack";
231 ma.ma_dmat = &_mainbus_dma_tag;
232 ma.ma_bust = &_mainbus_space_tag;
233 ma.ma_offset = MAINBUS_IPACK_OFFSET + intiobase_phys;
234 (void)config_found(self, &ma, mainbus_print, CFARGS_NONE);
235 }
236 #endif
237 }
238
239 int
mainbus_print(void * aux,const char * cp)240 mainbus_print(void *aux, const char *cp)
241 {
242 struct mainbus_attach_args *ma;
243
244 ma = aux;
245
246 if (cp)
247 aprint_normal("%s at %s", ma->ma_name, cp);
248
249 aprint_normal(" address 0x%lx", ma->ma_offset);
250
251 return UNCONF;
252 }
253