tspld.c revision 1.19 1 /* $NetBSD: tspld.c,v 1.19 2009/03/14 21:04:08 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 1.19 2009/03/14 21:04:08 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(struct device *parent, struct device *self, void *aux)
157 {
158 int i, rev, features, jp, model;
159 struct tspld_softc *sc = (struct tspld_softc *)self;
160 bus_space_handle_t ioh;
161 const struct sysctlnode *node;
162
163 if (sysctl_createv(NULL, 0, NULL, NULL,
164 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw",
165 NULL, NULL, 0, NULL, 0,
166 CTL_HW, CTL_EOL) != 0) {
167 printf("%s: could not create sysctl\n",
168 sc->sc_dev.dv_xname);
169 return;
170 }
171 if (sysctl_createv(NULL, 0, NULL, &node,
172 0, CTLTYPE_NODE, sc->sc_dev.dv_xname,
173 NULL,
174 NULL, 0, NULL, 0,
175 CTL_HW, CTL_CREATE, CTL_EOL) != 0) {
176 printf("%s: could not create sysctl\n",
177 sc->sc_dev.dv_xname);
178 return;
179 }
180
181 sc->sc_iot = &ep93xx_bs_tag;
182 bus_space_map(sc->sc_iot, TS7XXX_IO16_HWBASE + TS7XXX_MODEL, 2, 0,
183 &ioh);
184 model = bus_space_read_2(sc->sc_iot, ioh, 0) & 0x7;
185 sc->sc_model = (model ? "TS-7250" : "TS-7200");
186 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
187 0, CTLTYPE_STRING, "boardmodel",
188 SYSCTL_DESCR("Technologic Systems board model"),
189 NULL, 0, __UNCONST(sc->sc_model), 0,
190 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
191 != 0) {
192 printf("%s: could not create sysctl\n",
193 sc->sc_dev.dv_xname);
194 return;
195 }
196 bus_space_unmap(sc->sc_iot, ioh, 2);
197
198 bus_space_map(sc->sc_iot, TS7XXX_IO16_HWBASE + TS7XXX_PLDREV, 2, 0,
199 &ioh);
200 rev = bus_space_read_2(sc->sc_iot, ioh, 0) & 0x7;
201 rev = 'A' + rev - 1;
202 sc->sc_pldrev[0] = rev;
203 sc->sc_pldrev[1] = 0;
204 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
205 0, CTLTYPE_STRING, "pldrev",
206 SYSCTL_DESCR("CPLD revision"),
207 NULL, 0, sc->sc_pldrev, 0,
208 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
209 != 0) {
210 printf("%s: could not create sysctl\n",
211 sc->sc_dev.dv_xname);
212 return;
213 }
214 bus_space_unmap(sc->sc_iot, ioh, 2);
215
216 bus_space_map(sc->sc_iot, TS7XXX_IO16_HWBASE + TS7XXX_FEATURES, 2, 0,
217 &ioh);
218 features = bus_space_read_2(sc->sc_iot, ioh, 0) & 0x7;
219 bus_space_unmap(sc->sc_iot, ioh, 2);
220
221 bus_space_map(sc->sc_iot, TS7XXX_IO8_HWBASE + TS7XXX_STATUS1, 1, 0,
222 &ioh);
223 i = bus_space_read_1(sc->sc_iot, ioh, 0) & 0x1f;
224 jp = (~((i & 0x18) >> 1) & 0xc) | (i & 0x3);
225 bus_space_unmap(sc->sc_iot, ioh, 1);
226
227 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
228 0, CTLTYPE_INT, "blaster_present",
229 SYSCTL_DESCR("Whether or not a TS-9420/TS-9202 blaster board is connected"),
230 NULL, 0, &sc->sc_blaster_present, 0,
231 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
232 != 0) {
233 printf("%s: could not create sysctl\n",
234 sc->sc_dev.dv_xname);
235 return;
236 }
237 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
238 0, CTLTYPE_INT, "blaster_boot",
239 SYSCTL_DESCR("Whether or not a blast board was used to boot"),
240 NULL, 0, &sc->sc_blaster_boot, 0,
241 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
242 != 0) {
243 printf("%s: could not create sysctl\n",
244 sc->sc_dev.dv_xname);
245 return;
246 }
247 bus_space_map(sc->sc_iot, TS7XXX_IO16_HWBASE + TS7XXX_STATUS2, 2, 0,
248 &ioh);
249 i = bus_space_read_2(sc->sc_iot, ioh, 0) & 0x6;
250 sc->sc_blaster_boot = sc->sc_blaster_present = 0;
251 if (i & 0x2)
252 sc->sc_blaster_boot = 1;
253 if (i & 0x4)
254 sc->sc_blaster_present = 1;
255 jp |= (i << 4);
256 bus_space_unmap(sc->sc_iot, ioh, 1);
257
258 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
259 0, CTLTYPE_INT, "rs485_avail",
260 SYSCTL_DESCR("RS485 level driver for COM2 available"),
261 NULL, 0, &sc->sc_rs485, 0,
262 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
263 != 0) {
264 printf("%s: could not create sysctl\n",
265 sc->sc_dev.dv_xname);
266 return;
267 }
268 sc->sc_com2mode = "rs232";
269 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
270 0, CTLTYPE_STRING, "com2_mode",
271 SYSCTL_DESCR("line driver type for COM2"),
272 NULL, 0, __UNCONST(sc->sc_com2mode), 0,
273 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
274 != 0) {
275 printf("%s: could not create sysctl\n",
276 sc->sc_dev.dv_xname);
277 return;
278 }
279 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
280 0, CTLTYPE_INT, "max197adc_avail",
281 SYSCTL_DESCR("Maxim 197 Analog to Digital Converter available"),
282 NULL, 0, &sc->sc_adc, 0,
283 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
284 != 0) {
285 printf("%s: could not create sysctl\n",
286 sc->sc_dev.dv_xname);
287 return;
288 }
289 printf(": Technologic Systems %s rev %c, features 0x%x",
290 sc->sc_model, rev, features);
291 sc->sc_adc = sc->sc_rs485 = 0;
292 if (features == 0x1) {
293 printf("<MAX197-ADC>");
294 sc->sc_adc = 1;
295 } else if (features == 0x2) {
296 printf("<RS485>");
297 sc->sc_rs485 = 1;
298 } else if (features == 0x3) {
299 printf("<MAX197-ADC,RS485>");
300 sc->sc_adc = sc->sc_rs485 = 1;
301 }
302 printf("\n");
303 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
304 0, CTLTYPE_INT, "jp1",
305 SYSCTL_DESCR("onboard jumper setting"),
306 NULL, 0, &sc->sc_jp[0], 0,
307 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
308 != 0) {
309 printf("%s: could not create sysctl\n",
310 sc->sc_dev.dv_xname);
311 return;
312 }
313 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
314 0, CTLTYPE_INT, "jp2",
315 SYSCTL_DESCR("onboard jumper setting"),
316 NULL, 0, &sc->sc_jp[1], 0,
317 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
318 != 0) {
319 printf("%s: could not create sysctl\n",
320 sc->sc_dev.dv_xname);
321 return;
322 }
323 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
324 0, CTLTYPE_INT, "jp3",
325 SYSCTL_DESCR("onboard jumper setting"),
326 NULL, 0, &sc->sc_jp[2], 0,
327 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
328 != 0) {
329 printf("%s: could not create sysctl\n",
330 sc->sc_dev.dv_xname);
331 return;
332 }
333 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
334 0, CTLTYPE_INT, "jp4",
335 SYSCTL_DESCR("onboard jumper setting"),
336 NULL, 0, &sc->sc_jp[3], 0,
337 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
338 != 0) {
339 printf("%s: could not create sysctl\n",
340 sc->sc_dev.dv_xname);
341 return;
342 }
343 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
344 0, CTLTYPE_INT, "jp5",
345 SYSCTL_DESCR("onboard jumper setting"),
346 NULL, 0, &sc->sc_jp[4], 0,
347 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
348 != 0) {
349 printf("%s: could not create sysctl\n",
350 sc->sc_dev.dv_xname);
351 return;
352 }
353 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
354 0, CTLTYPE_INT, "jp6",
355 SYSCTL_DESCR("onboard jumper setting"),
356 NULL, 0, &sc->sc_jp[5], 0,
357 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
358 != 0) {
359 printf("%s: could not create sysctl\n",
360 sc->sc_dev.dv_xname);
361 return;
362 }
363 printf("%s: jumpers 0x%x", sc->sc_dev.dv_xname, jp);
364 if (jp) {
365 printf("<");
366 for(i = 0; i < 5; i++) {
367 if (jp & (1 << i)) {
368 sc->sc_jp[i + 1] = 1;
369 printf("JP%d", i + 2);
370 jp &= ~(1 << i);
371 if (jp) printf(",");
372 } else {
373 sc->sc_jp[i + 2] = 0;
374 }
375 }
376 printf(">");
377 }
378 printf("\n");
379
380
381 bus_space_map(sc->sc_iot, EP93XX_APB_HWBASE + EP93XX_APB_SSP,
382 EP93XX_APB_SSP_SIZE, 0, &sc->sc_ssph);
383 bus_space_map(sc->sc_iot, EP93XX_APB_HWBASE + EP93XX_APB_GPIO,
384 EP93XX_APB_GPIO_SIZE, 0, &sc->sc_gpioh);
385 SSP_SETBITS(SSPCR1, 0x10);
386 SSP_SET(SSPCR0, 0xf);
387 SSP_SET(SSPCPSR, 0xfe);
388 SSP_CLEARBITS(SSPCR1, 0x10);
389 SSP_SETBITS(SSPCR1, 0x10);
390 GPIO_SET(PFDR, 0x0);
391 callout_init(&sc->boardtemp_callout, 0);
392 callout_setfunc(&sc->boardtemp_callout, boardtemp_poll, sc);
393 boardtemp_poll(sc);
394 delay(1000);
395 boardtemp_poll(sc);
396 sc->boardtemp_5s = sc->boardtemp_30s = sc->boardtemp;
397 #define DEGF(c) ((c) * 9 / 5 + 32000000)
398 printf("%s: board temperature %d.%02d degC (%d.%02d degF)\n",
399 sc->sc_dev.dv_xname,
400 sc->boardtemp / 1000000, sc->boardtemp / 10000 % 100,
401 DEGF(sc->boardtemp) / 1000000, DEGF(sc->boardtemp) / 10000 % 100);
402 #undef DEGF
403 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
404 0, CTLTYPE_INT, "board_temp",
405 SYSCTL_DESCR("board temperature in micro degrees Celsius"),
406 NULL, 0, &sc->boardtemp, 0,
407 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
408 != 0) {
409 printf("%s: could not create sysctl\n",
410 sc->sc_dev.dv_xname);
411 return;
412 }
413
414 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
415 0, CTLTYPE_INT, "board_temp_5s",
416 SYSCTL_DESCR("5 second average board temperature in micro degrees Celsius"),
417 NULL, 0, &sc->boardtemp_5s, 0,
418 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
419 != 0) {
420 printf("%s: could not create sysctl\n",
421 sc->sc_dev.dv_xname);
422 return;
423 }
424
425 if ((i = sysctl_createv(NULL, 0, NULL, NULL,
426 0, CTLTYPE_INT, "board_temp_30s",
427 SYSCTL_DESCR("30 second average board temperature in micro degrees Celsius"),
428 NULL, 0, &sc->boardtemp_30s, 0,
429 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL))
430 != 0) {
431 printf("%s: could not create sysctl\n",
432 sc->sc_dev.dv_xname);
433 return;
434 }
435
436 bus_space_map(sc->sc_iot, TS7XXX_IO16_HWBASE + TS7XXX_WDOGCTRL, 2, 0,
437 &sc->sc_wdogctrl_ioh);
438 bus_space_map(sc->sc_iot, TS7XXX_IO16_HWBASE + TS7XXX_WDOGFEED, 2, 0,
439 &sc->sc_wdogfeed_ioh);
440
441 sc->sc_wdog.smw_name = sc->sc_dev.dv_xname;
442 sc->sc_wdog.smw_cookie = sc;
443 sc->sc_wdog.smw_setmode = tspld_wdog_setmode;
444 sc->sc_wdog.smw_tickle = tspld_wdog_tickle;
445 sc->sc_wdog.smw_period = 8;
446 sysmon_wdog_register(&sc->sc_wdog);
447 tspld_wdog_setmode(&sc->sc_wdog);
448
449 /* Set the on board peripherals bus callback */
450 config_defer(self, tspld_callback);
451 }
452
453 int
454 tspld_search(struct device *parent, struct cfdata *cf, const int *ldesc, void *aux)
455 {
456 struct tspld_softc *sc = (struct tspld_softc *)parent;
457 struct tspld_attach_args sa;
458
459 sa.ta_iot = sc->sc_iot;
460
461 if (config_match(parent, cf, &sa) > 0)
462 config_attach(parent, cf, &sa, tspld_print);
463
464 return (0);
465 }
466
467 int
468 tspld_print(void *aux, const char *name)
469 {
470
471 return (UNCONF);
472 }
473
474 void
475 tspld_callback(struct device *self)
476 {
477 #if NISA > 0
478 extern void isa_bs_mallocok(void);
479 struct isabus_attach_args iba;
480
481 /*
482 * Attach the ISA bus behind this bridge.
483 */
484 memset(&iba, 0, sizeof(iba));
485 iba.iba_iot = &isa_io_bs_tag;
486 iba.iba_memt = &isa_mem_bs_tag;
487 isa_bs_mallocok();
488 config_found_ia(self, "isabus", &iba, isabusprint);
489 #endif
490 /*
491 * Attach each devices
492 */
493 config_search_ia(tspld_search, self, "tspldbus", NULL);
494
495 }
496
497 static int
498 tspld_wdog_tickle(struct sysmon_wdog *smw)
499 {
500 struct tspld_softc *sc = (struct tspld_softc *)smw->smw_cookie;
501
502 bus_space_write_2(sc->sc_iot, sc->sc_wdogfeed_ioh, 0, 0x5);
503 return 0;
504 }
505
506 static int
507 tspld_wdog_setmode(struct sysmon_wdog *smw)
508 {
509 int i, ret = 0;
510 struct tspld_softc *sc = (struct tspld_softc *)smw->smw_cookie;
511
512 i = disable_interrupts(I32_bit|F32_bit);
513 if ((smw->smw_mode & WDOG_MODE_MASK) == WDOG_MODE_DISARMED) {
514 bus_space_write_2(sc->sc_iot, sc->sc_wdogfeed_ioh, 0, 0x5);
515 bus_space_write_2(sc->sc_iot, sc->sc_wdogctrl_ioh, 0, 0);
516 } else {
517 if (smw->smw_period == WDOG_PERIOD_DEFAULT) {
518 smw->smw_period = 8;
519 }
520
521 bus_space_write_2(sc->sc_iot, sc->sc_wdogfeed_ioh, 0, 0x5);
522 switch (smw->smw_period) {
523 case 1:
524 bus_space_write_2(sc->sc_iot, sc->sc_wdogctrl_ioh, 0,
525 0x3);
526 break;
527 case 2:
528 bus_space_write_2(sc->sc_iot, sc->sc_wdogctrl_ioh, 0,
529 0x5);
530 break;
531 case 4:
532 bus_space_write_2(sc->sc_iot, sc->sc_wdogctrl_ioh, 0,
533 0x6);
534 break;
535 case 8:
536 bus_space_write_2(sc->sc_iot, sc->sc_wdogctrl_ioh, 0,
537 0x7);
538 break;
539 default:
540 ret = EINVAL;
541 }
542 }
543 restore_interrupts(i);
544 return ret;
545 }
546