tspld.c revision 1.18 1 /* $NetBSD: tspld.c,v 1.18 2009/03/14 15:36:05 dsl Exp $ */
2
3 /*-
4 * Copyright (c) 2004 Jesse Off
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by the NetBSD
18 * Foundation, Inc. and its contributors.
19 * 4. Neither the name of The NetBSD Foundation nor the names of its
20 * contributors may be used to endorse or promote products derived
21 * from this software without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
25 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
26 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
27 * BE LIABLE FOR ANY 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 BUSINESS
30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
33 * POSSIBILITY OF SUCH DAMAGE.
34 *
35 */
36
37 #include <sys/cdefs.h>
38 __KERNEL_RCSID(0, "$NetBSD: tspld.c,v 1.18 2009/03/14 15:36:05 dsl Exp $");
39
40 #include <sys/param.h>
41 #include <sys/callout.h>
42 #include <sys/kernel.h>
43 #include <sys/sysctl.h>
44 #include <sys/systm.h>
45 #include <sys/device.h>
46 #include <sys/wdog.h>
47
48 #include <machine/bus.h>
49 #include <machine/cpu.h>
50 #include <machine/autoconf.h>
51 #include "isa.h"
52 #if NISA > 0
53 #include <dev/isa/isavar.h>
54 #include <machine/isa_machdep.h>
55 #endif
56
57 #include <evbarm/tsarm/tsarmreg.h>
58 #include <evbarm/tsarm/tspldvar.h>
59 #include <arm/ep93xx/ep93xxvar.h>
60 #include <arm/ep93xx/ep93xxreg.h>
61 #include <arm/ep93xx/epgpioreg.h>
62 #include <arm/arm32/machdep.h>
63 #include <arm/cpufunc.h>
64 #include <dev/sysmon/sysmonvar.h>
65
66 int tspldmatch (struct device *, struct cfdata *, void *);
67 void tspldattach (struct device *, struct device *, void *);
68 static int tspld_wdog_setmode (struct sysmon_wdog *);
69 static int tspld_wdog_tickle (struct sysmon_wdog *);
70 int tspld_search (struct device *, struct cfdata *, const int *, void *);
71 int tspld_print (void *, const char *);
72 void boardtemp_poll (void *);
73
74 struct tspld_softc {
75 struct device sc_dev;
76 bus_space_tag_t sc_iot;
77 bus_space_handle_t sc_wdogfeed_ioh;
78 bus_space_handle_t sc_wdogctrl_ioh;
79 struct sysmon_wdog sc_wdog;
80 bus_space_handle_t sc_ssph;
81 bus_space_handle_t sc_gpioh;
82 unsigned const char * sc_com2mode;
83 unsigned const char * sc_model;
84 unsigned char sc_pldrev[4];
85 uint32_t sc_rs485;
86 uint32_t sc_adc;
87 uint32_t sc_jp[6];
88 uint32_t sc_blaster_present;
89 uint32_t sc_blaster_boot;
90 uint32_t boardtemp;
91 uint32_t boardtemp_5s;
92 uint32_t boardtemp_30s;
93 struct callout boardtemp_callout;
94 };
95
96 CFATTACH_DECL(tspld, sizeof(struct tspld_softc),
97 tspldmatch, tspldattach, NULL, NULL);
98
99 void tspld_callback(struct device *);
100
101 #define GPIO_GET(x) bus_space_read_4(sc->sc_iot, sc->sc_gpioh, \
102 (EP93XX_GPIO_ ## x))
103
104 #define GPIO_SET(x, y) bus_space_write_4(sc->sc_iot, sc->sc_gpioh, \
105 (EP93XX_GPIO_ ## x), (y))
106
107 #define GPIO_SETBITS(x, y) bus_space_write_4(sc->sc_iot, sc->sc_gpioh, \
108 (EP93XX_GPIO_ ## x), GPIO_GET(x) | (y))
109
110 #define GPIO_CLEARBITS(x, y) bus_space_write_4(sc->sc_iot, sc->sc_gpioh, \
111 (EP93XX_GPIO_ ## x), GPIO_GET(x) & (~(y)))
112
113 #define SSP_GET(x) bus_space_read_4(sc->sc_iot, sc->sc_ssph, \
114 (EP93XX_SSP_ ## x))
115
116 #define SSP_SET(x, y) bus_space_write_4(sc->sc_iot, sc->sc_ssph, \
117 (EP93XX_SSP_ ## x), (y))
118
119 #define SSP_SETBITS(x, y) bus_space_write_4(sc->sc_iot, sc->sc_ssph, \
120 (EP93XX_SSP_ ## x), SSP_GET(x) | (y))
121
122 #define SSP_CLEARBITS(x, y) bus_space_write_4(sc->sc_iot, sc->sc_ssph, \
123 (EP93XX_SSP_ ## x), SSP_GET(x) & (~(y)))
124
125 int
126 tspldmatch(struct device *parent, struct cfdata *match, void *aux)
127 {
128
129 return 1;
130 }
131
132 void
133 boardtemp_poll(void *arg)
134 {
135 struct tspld_softc *sc = arg;
136 u_int16_t val;
137
138 /* Disable chip select */
139 GPIO_SET(PFDDR, 0x0);
140
141 val = SSP_GET(SSPDR) & 0xffff;
142 sc->boardtemp = ((int16_t)val >> 3) * 62500;
143 sc->boardtemp_5s = sc->boardtemp_5s / 20 * 19 + sc->boardtemp / 20;
144 sc->boardtemp_30s = sc->boardtemp_30s / 120 * 119 + sc->boardtemp / 120;
145
146 callout_schedule(&sc->boardtemp_callout, hz / 4);
147
148 /* Enable chip select */
149 GPIO_SET(PFDDR, 0x4);
150
151 /* Send read command */
152 SSP_SET(SSPDR, 0x8000);
153 }
154
155 void
156 tspldattach(parent, self, aux)
157 struct device *parent, *self;
158 void *aux;
159 {
160 int i, rev, features, jp, model;
161 struct tspld_softc *sc = (struct tspld_softc *)self;
162 bus_space_handle_t ioh;
163 const struct sysctlnode *node;
164
165 if (sysctl_createv(NULL, 0, NULL, NULL,
166 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw",
167 NULL, NULL, 0, NULL, 0,
168 CTL_HW, CTL_EOL) != 0) {
169 printf("%s: could not create sysctl\n",
170 sc->sc_dev.dv_xname);
171 return;
172 }
173 if (sysctl_createv(NULL, 0, NULL, &node,
174 0, CTLTYPE_NODE, sc->sc_dev.dv_xname,
175 NULL,
176 NULL, 0, NULL, 0,
177 CTL_HW, CTL_CREATE, CTL_EOL) != 0) {
178 printf("%s: could not create sysctl\n",
179 sc->sc_dev.dv_xname);
180 return;
181 }
182
183 sc->sc_iot = &ep93xx_bs_tag;
184 bus_space_map(sc->sc_iot, TS7XXX_IO16_HWBASE + TS7XXX_MODEL, 2, 0,
185 &ioh);
186 model = bus_space_read_2(sc->sc_iot, ioh, 0) & 0x7;
187 sc->sc_model = (model ? "TS-7250" : "TS-7200");
188 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
189 0, CTLTYPE_STRING, "boardmodel",
190 SYSCTL_DESCR("Technologic Systems board model"),
191 NULL, 0, __UNCONST(sc->sc_model), 0,
192 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
193 != 0) {
194 printf("%s: could not create sysctl\n",
195 sc->sc_dev.dv_xname);
196 return;
197 }
198 bus_space_unmap(sc->sc_iot, ioh, 2);
199
200 bus_space_map(sc->sc_iot, TS7XXX_IO16_HWBASE + TS7XXX_PLDREV, 2, 0,
201 &ioh);
202 rev = bus_space_read_2(sc->sc_iot, ioh, 0) & 0x7;
203 rev = 'A' + rev - 1;
204 sc->sc_pldrev[0] = rev;
205 sc->sc_pldrev[1] = 0;
206 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
207 0, CTLTYPE_STRING, "pldrev",
208 SYSCTL_DESCR("CPLD revision"),
209 NULL, 0, sc->sc_pldrev, 0,
210 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
211 != 0) {
212 printf("%s: could not create sysctl\n",
213 sc->sc_dev.dv_xname);
214 return;
215 }
216 bus_space_unmap(sc->sc_iot, ioh, 2);
217
218 bus_space_map(sc->sc_iot, TS7XXX_IO16_HWBASE + TS7XXX_FEATURES, 2, 0,
219 &ioh);
220 features = bus_space_read_2(sc->sc_iot, ioh, 0) & 0x7;
221 bus_space_unmap(sc->sc_iot, ioh, 2);
222
223 bus_space_map(sc->sc_iot, TS7XXX_IO8_HWBASE + TS7XXX_STATUS1, 1, 0,
224 &ioh);
225 i = bus_space_read_1(sc->sc_iot, ioh, 0) & 0x1f;
226 jp = (~((i & 0x18) >> 1) & 0xc) | (i & 0x3);
227 bus_space_unmap(sc->sc_iot, ioh, 1);
228
229 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
230 0, CTLTYPE_INT, "blaster_present",
231 SYSCTL_DESCR("Whether or not a TS-9420/TS-9202 blaster board is connected"),
232 NULL, 0, &sc->sc_blaster_present, 0,
233 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
234 != 0) {
235 printf("%s: could not create sysctl\n",
236 sc->sc_dev.dv_xname);
237 return;
238 }
239 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
240 0, CTLTYPE_INT, "blaster_boot",
241 SYSCTL_DESCR("Whether or not a blast board was used to boot"),
242 NULL, 0, &sc->sc_blaster_boot, 0,
243 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
244 != 0) {
245 printf("%s: could not create sysctl\n",
246 sc->sc_dev.dv_xname);
247 return;
248 }
249 bus_space_map(sc->sc_iot, TS7XXX_IO16_HWBASE + TS7XXX_STATUS2, 2, 0,
250 &ioh);
251 i = bus_space_read_2(sc->sc_iot, ioh, 0) & 0x6;
252 sc->sc_blaster_boot = sc->sc_blaster_present = 0;
253 if (i & 0x2)
254 sc->sc_blaster_boot = 1;
255 if (i & 0x4)
256 sc->sc_blaster_present = 1;
257 jp |= (i << 4);
258 bus_space_unmap(sc->sc_iot, ioh, 1);
259
260 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
261 0, CTLTYPE_INT, "rs485_avail",
262 SYSCTL_DESCR("RS485 level driver for COM2 available"),
263 NULL, 0, &sc->sc_rs485, 0,
264 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
265 != 0) {
266 printf("%s: could not create sysctl\n",
267 sc->sc_dev.dv_xname);
268 return;
269 }
270 sc->sc_com2mode = "rs232";
271 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
272 0, CTLTYPE_STRING, "com2_mode",
273 SYSCTL_DESCR("line driver type for COM2"),
274 NULL, 0, __UNCONST(sc->sc_com2mode), 0,
275 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
276 != 0) {
277 printf("%s: could not create sysctl\n",
278 sc->sc_dev.dv_xname);
279 return;
280 }
281 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
282 0, CTLTYPE_INT, "max197adc_avail",
283 SYSCTL_DESCR("Maxim 197 Analog to Digital Converter available"),
284 NULL, 0, &sc->sc_adc, 0,
285 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
286 != 0) {
287 printf("%s: could not create sysctl\n",
288 sc->sc_dev.dv_xname);
289 return;
290 }
291 printf(": Technologic Systems %s rev %c, features 0x%x",
292 sc->sc_model, rev, features);
293 sc->sc_adc = sc->sc_rs485 = 0;
294 if (features == 0x1) {
295 printf("<MAX197-ADC>");
296 sc->sc_adc = 1;
297 } else if (features == 0x2) {
298 printf("<RS485>");
299 sc->sc_rs485 = 1;
300 } else if (features == 0x3) {
301 printf("<MAX197-ADC,RS485>");
302 sc->sc_adc = sc->sc_rs485 = 1;
303 }
304 printf("\n");
305 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
306 0, CTLTYPE_INT, "jp1",
307 SYSCTL_DESCR("onboard jumper setting"),
308 NULL, 0, &sc->sc_jp[0], 0,
309 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
310 != 0) {
311 printf("%s: could not create sysctl\n",
312 sc->sc_dev.dv_xname);
313 return;
314 }
315 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
316 0, CTLTYPE_INT, "jp2",
317 SYSCTL_DESCR("onboard jumper setting"),
318 NULL, 0, &sc->sc_jp[1], 0,
319 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
320 != 0) {
321 printf("%s: could not create sysctl\n",
322 sc->sc_dev.dv_xname);
323 return;
324 }
325 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
326 0, CTLTYPE_INT, "jp3",
327 SYSCTL_DESCR("onboard jumper setting"),
328 NULL, 0, &sc->sc_jp[2], 0,
329 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
330 != 0) {
331 printf("%s: could not create sysctl\n",
332 sc->sc_dev.dv_xname);
333 return;
334 }
335 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
336 0, CTLTYPE_INT, "jp4",
337 SYSCTL_DESCR("onboard jumper setting"),
338 NULL, 0, &sc->sc_jp[3], 0,
339 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
340 != 0) {
341 printf("%s: could not create sysctl\n",
342 sc->sc_dev.dv_xname);
343 return;
344 }
345 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
346 0, CTLTYPE_INT, "jp5",
347 SYSCTL_DESCR("onboard jumper setting"),
348 NULL, 0, &sc->sc_jp[4], 0,
349 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
350 != 0) {
351 printf("%s: could not create sysctl\n",
352 sc->sc_dev.dv_xname);
353 return;
354 }
355 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
356 0, CTLTYPE_INT, "jp6",
357 SYSCTL_DESCR("onboard jumper setting"),
358 NULL, 0, &sc->sc_jp[5], 0,
359 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
360 != 0) {
361 printf("%s: could not create sysctl\n",
362 sc->sc_dev.dv_xname);
363 return;
364 }
365 printf("%s: jumpers 0x%x", sc->sc_dev.dv_xname, jp);
366 if (jp) {
367 printf("<");
368 for(i = 0; i < 5; i++) {
369 if (jp & (1 << i)) {
370 sc->sc_jp[i + 1] = 1;
371 printf("JP%d", i + 2);
372 jp &= ~(1 << i);
373 if (jp) printf(",");
374 } else {
375 sc->sc_jp[i + 2] = 0;
376 }
377 }
378 printf(">");
379 }
380 printf("\n");
381
382
383 bus_space_map(sc->sc_iot, EP93XX_APB_HWBASE + EP93XX_APB_SSP,
384 EP93XX_APB_SSP_SIZE, 0, &sc->sc_ssph);
385 bus_space_map(sc->sc_iot, EP93XX_APB_HWBASE + EP93XX_APB_GPIO,
386 EP93XX_APB_GPIO_SIZE, 0, &sc->sc_gpioh);
387 SSP_SETBITS(SSPCR1, 0x10);
388 SSP_SET(SSPCR0, 0xf);
389 SSP_SET(SSPCPSR, 0xfe);
390 SSP_CLEARBITS(SSPCR1, 0x10);
391 SSP_SETBITS(SSPCR1, 0x10);
392 GPIO_SET(PFDR, 0x0);
393 callout_init(&sc->boardtemp_callout, 0);
394 callout_setfunc(&sc->boardtemp_callout, boardtemp_poll, sc);
395 boardtemp_poll(sc);
396 delay(1000);
397 boardtemp_poll(sc);
398 sc->boardtemp_5s = sc->boardtemp_30s = sc->boardtemp;
399 #define DEGF(c) ((c) * 9 / 5 + 32000000)
400 printf("%s: board temperature %d.%02d degC (%d.%02d degF)\n",
401 sc->sc_dev.dv_xname,
402 sc->boardtemp / 1000000, sc->boardtemp / 10000 % 100,
403 DEGF(sc->boardtemp) / 1000000, DEGF(sc->boardtemp) / 10000 % 100);
404 #undef DEGF
405 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
406 0, CTLTYPE_INT, "board_temp",
407 SYSCTL_DESCR("board temperature in micro degrees Celsius"),
408 NULL, 0, &sc->boardtemp, 0,
409 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
410 != 0) {
411 printf("%s: could not create sysctl\n",
412 sc->sc_dev.dv_xname);
413 return;
414 }
415
416 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
417 0, CTLTYPE_INT, "board_temp_5s",
418 SYSCTL_DESCR("5 second average board temperature in micro degrees Celsius"),
419 NULL, 0, &sc->boardtemp_5s, 0,
420 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
421 != 0) {
422 printf("%s: could not create sysctl\n",
423 sc->sc_dev.dv_xname);
424 return;
425 }
426
427 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
428 0, CTLTYPE_INT, "board_temp_30s",
429 SYSCTL_DESCR("30 second average board temperature in micro degrees Celsius"),
430 NULL, 0, &sc->boardtemp_30s, 0,
431 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
432 != 0) {
433 printf("%s: could not create sysctl\n",
434 sc->sc_dev.dv_xname);
435 return;
436 }
437
438 bus_space_map(sc->sc_iot, TS7XXX_IO16_HWBASE + TS7XXX_WDOGCTRL, 2, 0,
439 &sc->sc_wdogctrl_ioh);
440 bus_space_map(sc->sc_iot, TS7XXX_IO16_HWBASE + TS7XXX_WDOGFEED, 2, 0,
441 &sc->sc_wdogfeed_ioh);
442
443 sc->sc_wdog.smw_name = sc->sc_dev.dv_xname;
444 sc->sc_wdog.smw_cookie = sc;
445 sc->sc_wdog.smw_setmode = tspld_wdog_setmode;
446 sc->sc_wdog.smw_tickle = tspld_wdog_tickle;
447 sc->sc_wdog.smw_period = 8;
448 sysmon_wdog_register(&sc->sc_wdog);
449 tspld_wdog_setmode(&sc->sc_wdog);
450
451 /* Set the on board peripherals bus callback */
452 config_defer(self, tspld_callback);
453 }
454
455 int
456 tspld_search(struct device *parent, struct cfdata *cf, const int *ldesc, void *aux)
457 {
458 struct tspld_softc *sc = (struct tspld_softc *)parent;
459 struct tspld_attach_args sa;
460
461 sa.ta_iot = sc->sc_iot;
462
463 if (config_match(parent, cf, &sa) > 0)
464 config_attach(parent, cf, &sa, tspld_print);
465
466 return (0);
467 }
468
469 int
470 tspld_print(void *aux, const char *name)
471 {
472
473 return (UNCONF);
474 }
475
476 void
477 tspld_callback(struct device *self)
478 {
479 #if NISA > 0
480 extern void isa_bs_mallocok(void);
481 struct isabus_attach_args iba;
482
483 /*
484 * Attach the ISA bus behind this bridge.
485 */
486 memset(&iba, 0, sizeof(iba));
487 iba.iba_iot = &isa_io_bs_tag;
488 iba.iba_memt = &isa_mem_bs_tag;
489 isa_bs_mallocok();
490 config_found_ia(self, "isabus", &iba, isabusprint);
491 #endif
492 /*
493 * Attach each devices
494 */
495 config_search_ia(tspld_search, self, "tspldbus", NULL);
496
497 }
498
499 static int
500 tspld_wdog_tickle(struct sysmon_wdog *smw)
501 {
502 struct tspld_softc *sc = (struct tspld_softc *)smw->smw_cookie;
503
504 bus_space_write_2(sc->sc_iot, sc->sc_wdogfeed_ioh, 0, 0x5);
505 return 0;
506 }
507
508 static int
509 tspld_wdog_setmode(struct sysmon_wdog *smw)
510 {
511 int i, ret = 0;
512 struct tspld_softc *sc = (struct tspld_softc *)smw->smw_cookie;
513
514 i = disable_interrupts(I32_bit|F32_bit);
515 if ((smw->smw_mode & WDOG_MODE_MASK) == WDOG_MODE_DISARMED) {
516 bus_space_write_2(sc->sc_iot, sc->sc_wdogfeed_ioh, 0, 0x5);
517 bus_space_write_2(sc->sc_iot, sc->sc_wdogctrl_ioh, 0, 0);
518 } else {
519 if (smw->smw_period == WDOG_PERIOD_DEFAULT) {
520 smw->smw_period = 8;
521 }
522
523 bus_space_write_2(sc->sc_iot, sc->sc_wdogfeed_ioh, 0, 0x5);
524 switch (smw->smw_period) {
525 case 1:
526 bus_space_write_2(sc->sc_iot, sc->sc_wdogctrl_ioh, 0,
527 0x3);
528 break;
529 case 2:
530 bus_space_write_2(sc->sc_iot, sc->sc_wdogctrl_ioh, 0,
531 0x5);
532 break;
533 case 4:
534 bus_space_write_2(sc->sc_iot, sc->sc_wdogctrl_ioh, 0,
535 0x6);
536 break;
537 case 8:
538 bus_space_write_2(sc->sc_iot, sc->sc_wdogctrl_ioh, 0,
539 0x7);
540 break;
541 default:
542 ret = EINVAL;
543 }
544 }
545 restore_interrupts(i);
546 return ret;
547 }
548