1 /* $NetBSD: gemini_obio.c,v 1.12 2021/08/07 16:18:44 thorpej Exp $ */
2
3 /* adapted from:
4 * NetBSD: omap2_obio.c,v 1.5 2008/10/21 18:50:25 matt Exp
5 */
6
7 /*
8 * Autoconfiguration support for the Gemini "On Board" I/O.
9 *
10 * Based on arm/omap/omap2_obio.c which in turn was derived
11 * Based on arm/omap/omap_emifs.c which in turn was derived
12 * Based on arm/xscale/pxa2x0.c which in turn was derived
13 * from arm/sa11x0/sa11x0.c
14 *
15 * Copyright (c) 2002, 2005 Genetec Corporation. All rights reserved.
16 * Written by Hiroyuki Bessho for Genetec Corporation.
17 *
18 * Redistribution and use in source and binary forms, with or without
19 * modification, are permitted provided that the following conditions
20 * are met:
21 * 1. Redistributions of source code must retain the above copyright
22 * notice, this list of conditions and the following disclaimer.
23 * 2. Redistributions in binary form must reproduce the above copyright
24 * notice, this list of conditions and the following disclaimer in the
25 * documentation and/or other materials provided with the distribution.
26 * 3. All advertising materials mentioning features or use of this software
27 * must display the following acknowledgement:
28 * This product includes software developed for the NetBSD Project by
29 * Genetec Corporation.
30 * 4. The name of Genetec Corporation may not be used to endorse or
31 * promote products derived from this software without specific prior
32 * written permission.
33 *
34 * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND
35 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
36 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
37 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GENETEC CORPORATION
38 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
39 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
40 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
41 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
42 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
43 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
44 * POSSIBILITY OF SUCH DAMAGE.
45 *
46 * Copyright (c) 1997,1998, 2001, The NetBSD Foundation, Inc.
47 * All rights reserved.
48 *
49 * This code is derived from software contributed to The NetBSD Foundation
50 * by IWAMOTO Toshihiro, Ichiro FUKUHARA and Paul Kranenburg.
51 *
52 * Redistribution and use in source and binary forms, with or without
53 * modification, are permitted provided that the following conditions
54 * are met:
55 * 1. Redistributions of source code must retain the above copyright
56 * notice, this list of conditions and the following disclaimer.
57 * 2. Redistributions in binary form must reproduce the above copyright
58 * notice, this list of conditions and the following disclaimer in the
59 * documentation and/or other materials provided with the distribution.
60 *
61 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
62 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
63 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
64 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
65 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
66 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
67 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
68 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
69 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
70 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
71 * POSSIBILITY OF SUCH DAMAGE.
72 *
73 * Copyright (c) 1999
74 * Shin Takemura and PocketBSD Project. All rights reserved.
75 *
76 * Redistribution and use in source and binary forms, with or without
77 * modification, are permitted provided that the following conditions
78 * are met:
79 * 1. Redistributions of source code must retain the above copyright
80 * notice, this list of conditions and the following disclaimer.
81 * 2. Redistributions in binary form must reproduce the above copyright
82 * notice, this list of conditions and the following disclaimer in the
83 * documentation and/or other materials provided with the distribution.
84 * 3. All advertising materials mentioning features or use of this software
85 * must display the following acknowledgement:
86 * This product includes software developed by the PocketBSD project
87 * and its contributors.
88 * 4. Neither the name of the project nor the names of its contributors
89 * may be used to endorse or promote products derived from this software
90 * without specific prior written permission.
91 *
92 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
93 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
95 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
96 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
97 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
98 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
99 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
100 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
101 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
102 * SUCH DAMAGE.
103 */
104
105 #include "opt_gemini.h"
106 #include <sys/cdefs.h>
107 __KERNEL_RCSID(0, "$NetBSD: gemini_obio.c,v 1.12 2021/08/07 16:18:44 thorpej Exp $");
108
109 #include "locators.h"
110 #include "obio.h"
111 #include "geminiicu.h"
112 #include "pci.h"
113
114 #include <sys/param.h>
115 #include <sys/systm.h>
116 #include <sys/device.h>
117 #include <sys/kernel.h>
118 #include <sys/reboot.h>
119
120 #include <machine/cpu.h>
121 #include <sys/bus.h>
122
123 #include <arm/cpufunc.h>
124 #include <arm/mainbus/mainbus.h>
125 #include <arm/gemini/gemini_var.h>
126 #include <arm/gemini/gemini_reg.h>
127
128 #include <arm/gemini/gemini_obiovar.h>
129
130 typedef struct {
131 boolean_t cs_valid;
132 ulong cs_addr;
133 ulong cs_size;
134 } obio_csconfig_t;
135
136 /* prototypes */
137 static int obio_match(device_t, cfdata_t, void *);
138 static void obio_attach(device_t, device_t, void *);
139 static int obio_search(device_t, cfdata_t, const int *, void *);
140 static int obio_find(device_t, cfdata_t, const int *, void *);
141 static int obio_print(void *, const char *);
142 static void obio_attach_critical(struct obio_softc *);
143
144 /* attach structures */
145 CFATTACH_DECL_NEW(obio, sizeof(struct obio_softc),
146 obio_match, obio_attach, NULL, NULL);
147
148
149 static int
obio_match(device_t parent,cfdata_t match,void * aux)150 obio_match(device_t parent, cfdata_t match, void *aux)
151 {
152 return 1;
153 }
154
155 static void
obio_attach(device_t parent,device_t self,void * aux)156 obio_attach(device_t parent, device_t self, void *aux)
157 {
158 struct obio_softc *sc = device_private(self);
159 struct mainbus_attach_args *mb = (struct mainbus_attach_args *)aux;
160 #if NPCI > 0
161 struct pcibus_attach_args pba;
162 #endif
163
164 sc->sc_dev = self;
165
166 sc->sc_iot = &gemini_bs_tag;
167
168 aprint_normal(": On-Board IO\n");
169
170 #if (GEMINI_BUSBASE != 0)
171 sc->sc_dmarange.dr_sysbase = 0;
172 sc->sc_dmarange.dr_busbase = (GEMINI_BUSBASE * 1024 * 1024);
173 sc->sc_dmarange.dr_len = MEMSIZE * 1024 * 1024;
174 gemini_bus_dma_tag._ranges = &sc->sc_dmarange;
175 gemini_bus_dma_tag._nranges = 1;
176 #endif
177
178 sc->sc_ioh = 0;
179 sc->sc_dmat = &gemini_bus_dma_tag;
180 sc->sc_base = mb->mb_iobase;
181 sc->sc_size = mb->mb_iosize;
182
183 /*
184 * Attach critical devices first.
185 */
186 obio_attach_critical(sc);
187
188 #if NPCI > 0
189 /*
190 * map PCI controller registers
191 */
192 if (bus_space_map(sc->sc_iot, GEMINI_PCICFG_BASE,
193 GEMINI_PCI_CFG_DATA+4, 0, &sc->sc_pcicfg_ioh)) {
194 aprint_error("cannot map PCI controller at %#x\n",
195 GEMINI_PCICFG_BASE);
196 return;
197 }
198 /*
199 * initialize the PCI chipset tag
200 */
201 gemini_pci_init(&sc->sc_pci_chipset, sc);
202 #endif /* NPCI */
203
204 /*
205 * attach the rest of our devices
206 */
207 config_search(self, NULL,
208 CFARGS(.search = obio_search,
209 .iattr = "obio"));
210
211 #if NPCI > 0
212 /*
213 * attach the PCI bus
214 */
215 pba.pba_memt = sc->sc_iot;
216 pba.pba_iot = sc->sc_iot;
217 pba.pba_dmat = sc->sc_dmat;
218 pba.pba_dmat64 = NULL;
219 pba.pba_pc = &sc->sc_pci_chipset;
220 pba.pba_bus = 0;
221 pba.pba_bridgetag = NULL;
222 pba.pba_intrswiz = 0;
223 pba.pba_intrtag = 0;
224 pba.pba_flags = PCI_FLAGS_IO_OKAY | PCI_FLAGS_MEM_OKAY |
225 PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY | PCI_FLAGS_MWI_OKAY;
226
227 config_found(sc->sc_dev, &pba, pcibusprint,
228 CFARGS(.iattr = "pcibus"));
229 #endif /* NPCI */
230
231 }
232
233 static int
obio_search(device_t parent,cfdata_t cf,const int * ldesc,void * aux)234 obio_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
235 {
236 struct obio_softc * const sc = device_private(parent);
237 struct obio_attach_args oa;
238
239 /* Set up the attach args. */
240 if (cf->cf_loc[OBIOCF_NOBYTEACC] == 1) {
241 #if 0
242 if (cf->cf_loc[OBIOCF_MULT] == 1)
243 oa.obio_iot = &nobyteacc_bs_tag;
244 else
245 #endif
246 panic("nobyteacc specified for device with "
247 "non-byte multiplier\n");
248 } else {
249 switch (cf->cf_loc[OBIOCF_MULT]) {
250 case 1:
251 oa.obio_iot = &gemini_bs_tag;
252 break;
253 #if 0
254 case 2:
255 oa.obio_iot = &gemini_a2x_bs_tag;
256 break;
257 #endif
258 case 4:
259 oa.obio_iot = &gemini_a4x_bs_tag;
260 break;
261 default:
262 panic("Unsupported obio bus multiplier.");
263 break;
264 }
265 }
266
267 oa.obio_dmat = sc->sc_dmat;
268 oa.obio_addr = cf->cf_loc[OBIOCF_ADDR];
269 oa.obio_size = cf->cf_loc[OBIOCF_SIZE];
270 oa.obio_intr = cf->cf_loc[OBIOCF_INTR];
271 oa.obio_intrbase = cf->cf_loc[OBIOCF_INTRBASE];
272
273 if (config_probe(parent, cf, &oa)) {
274 config_attach(parent, cf, &oa, obio_print, CFARGS_NONE);
275 return 0; /* love it */
276 }
277
278 return UNCONF; /* NG */
279 }
280
281 static int
obio_find(device_t parent,cfdata_t cf,const int * ldesc,void * aux)282 obio_find(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
283 {
284 struct obio_attach_args * const oa = aux;
285
286 if (oa->obio_addr != OBIOCF_ADDR_DEFAULT
287 && oa->obio_addr != cf->cf_loc[OBIOCF_ADDR])
288 return 0;
289 if (oa->obio_size != OBIOCF_SIZE_DEFAULT
290 && oa->obio_size != cf->cf_loc[OBIOCF_SIZE])
291 return 0;
292 if (oa->obio_intr != OBIOCF_INTR_DEFAULT
293 && oa->obio_intr != cf->cf_loc[OBIOCF_INTR])
294 return 0;
295 if (oa->obio_intrbase != OBIOCF_INTRBASE_DEFAULT
296 && oa->obio_intrbase != cf->cf_loc[OBIOCF_INTRBASE])
297 return 0;
298
299 /* Set up the attach args. */
300 if (cf->cf_loc[OBIOCF_NOBYTEACC] == 1) {
301 #if 0
302 if (cf->cf_loc[OBIOCF_MULT] == 1)
303 oa->obio_iot = &nobyteacc_bs_tag;
304 else
305 #endif
306 panic("nobyteacc specified for device with "
307 "non-byte multiplier\n");
308 } else {
309 switch (cf->cf_loc[OBIOCF_MULT]) {
310 case 1:
311 oa->obio_iot = &gemini_bs_tag;
312 break;
313 #if 0
314 case 2:
315 oa->obio_iot = &gemini_a2x_bs_tag;
316 break;
317 #endif
318 case 4:
319 oa->obio_iot = &gemini_a4x_bs_tag;
320 break;
321 default:
322 panic("Unsupported obio bus multiplier.");
323 break;
324 }
325 }
326 oa->obio_addr = cf->cf_loc[OBIOCF_ADDR];
327 oa->obio_size = cf->cf_loc[OBIOCF_SIZE];
328 oa->obio_intr = cf->cf_loc[OBIOCF_INTR];
329 oa->obio_intrbase = cf->cf_loc[OBIOCF_INTRBASE];
330
331 return config_match(parent, cf, oa);
332 }
333
334 #if NGEMINIICU == 0
335 #error no geminiicu present in config file
336 #endif
337
338 static const struct {
339 const char *name;
340 bus_addr_t addr;
341 bool required;
342 } critical_devs[] = {
343 #if defined(GEMINI_MASTER) || defined(GEMINI_SINGLE)
344 { .name = "geminiicu0", .addr = 0x48000000, .required = true },
345 { .name = "geminiwdt0", .addr = 0x41000000, .required = true },
346 { .name = "geminitmr0", .addr = 0x43000000, .required = true },
347 { .name = "geminitmr2", .addr = 0x43000000, .required = true },
348 { .name = "com0", .addr = 0x42000000, .required = true },
349 #elif defined(GEMINI_SLAVE)
350 { .name = "geminiicu1", .addr = 0x49000000, .required = true },
351 { .name = "geminitmr1", .addr = 0x43000000, .required = true },
352 { .name = "geminitmr2", .addr = 0x43000000, .required = true },
353 { .name = "geminilpchc0", .addr = 0x47000000, .required = true },
354 #endif
355 };
356
357 static void
obio_attach_critical(struct obio_softc * sc)358 obio_attach_critical(struct obio_softc *sc)
359 {
360 struct obio_attach_args oa;
361 cfdata_t cf;
362 size_t i;
363
364 for (i = 0; i < __arraycount(critical_devs); i++) {
365 oa.obio_iot = sc->sc_iot;
366 oa.obio_dmat = sc->sc_dmat;
367
368 oa.obio_addr = critical_devs[i].addr;
369 oa.obio_size = OBIOCF_SIZE_DEFAULT;
370 oa.obio_intr = OBIOCF_INTR_DEFAULT;
371 oa.obio_intrbase = OBIOCF_INTRBASE_DEFAULT;
372
373 #if 0
374 if (oa.obio_addr != OBIOCF_ADDR_DEFAULT
375 && (oa.obio_addr < sc->sc_base
376 || oa.obio_addr >= sc->sc_base + sc->sc_size))
377 continue;
378 #endif
379
380 cf = config_search(sc->sc_dev, &oa,
381 CFARGS(.submatch = obio_find,
382 .iattr = "obio"));
383 if (cf == NULL && critical_devs[i].required)
384 panic("obio_attach_critical: failed to find %s!",
385 critical_devs[i].name);
386
387 oa.obio_addr = cf->cf_loc[OBIOCF_ADDR];
388 oa.obio_size = cf->cf_loc[OBIOCF_SIZE];
389 oa.obio_intr = cf->cf_loc[OBIOCF_INTR];
390 oa.obio_intrbase = cf->cf_loc[OBIOCF_INTRBASE];
391 config_attach(sc->sc_dev, cf, &oa, obio_print, CFARGS_NONE);
392 }
393 }
394
395 static int
obio_print(void * aux,const char * name)396 obio_print(void *aux, const char *name)
397 {
398 struct obio_attach_args *oa = (struct obio_attach_args*)aux;
399
400 if (oa->obio_addr != OBIOCF_ADDR_DEFAULT) {
401 aprint_normal(" addr 0x%08lx", oa->obio_addr);
402 if (oa->obio_size != OBIOCF_SIZE_DEFAULT)
403 aprint_normal("-0x%08lx",
404 oa->obio_addr + oa->obio_size-1);
405 }
406 if (oa->obio_intr != OBIOCF_INTR_DEFAULT)
407 aprint_normal(" intr %d", oa->obio_intr);
408 if (oa->obio_intrbase != OBIOCF_INTRBASE_DEFAULT)
409 aprint_normal(" intrbase %d", oa->obio_intrbase);
410
411 return UNCONF;
412 }
413