1 | /* $NetBSD: acpi_tz.c,v 1.88 2015/04/23 23:23:00 pgoyette Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 2003 Jared D. McNeill <jmcneill@invisible.ca> |
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. The name of the author may not be used to endorse or promote products |
13 | * derived from this software without specific prior written permission. |
14 | * |
15 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
16 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
17 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
18 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
19 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
20 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
21 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
22 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
23 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
24 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
25 | * SUCH DAMAGE. |
26 | */ |
27 | |
28 | /* |
29 | * ACPI Thermal Zone driver |
30 | */ |
31 | |
32 | #include <sys/cdefs.h> |
33 | __KERNEL_RCSID(0, "$NetBSD: acpi_tz.c,v 1.88 2015/04/23 23:23:00 pgoyette Exp $" ); |
34 | |
35 | #include <sys/param.h> |
36 | #include <sys/device.h> |
37 | #include <sys/callout.h> |
38 | #include <sys/kernel.h> |
39 | #include <sys/module.h> |
40 | #include <sys/systm.h> |
41 | #include <sys/kmem.h> |
42 | |
43 | #include <dev/acpi/acpireg.h> |
44 | #include <dev/acpi/acpivar.h> |
45 | #include <dev/acpi/acpi_power.h> |
46 | |
47 | #define _COMPONENT ACPI_TZ_COMPONENT |
48 | ACPI_MODULE_NAME ("acpi_tz" ) |
49 | |
50 | #define ACPI_NOTIFY_TZ_ZONE 0x80 |
51 | #define ACPI_NOTIFY_TZ_TRIP 0x81 |
52 | #define ACPI_NOTIFY_TZ_DEVLIST 0x82 |
53 | |
54 | #define ATZ_F_CRITICAL 0x01 /* zone critical */ |
55 | #define ATZ_F_HOT 0x02 /* zone hot */ |
56 | #define ATZ_F_PASSIVE 0x04 /* zone passive cooling */ |
57 | #define ATZ_F_PASSIVEONLY 0x08 /* zone is passive cooling only */ |
58 | |
59 | #define ATZ_ACTIVE_NONE -1 |
60 | |
61 | /* |
62 | * The constants are as follows: |
63 | * |
64 | * ATZ_TZP_RATE default polling interval (30 seconds) if no _TZP |
65 | * ATZ_NLEVELS number of cooling levels for _ACx and _ALx |
66 | * ATZ_ZEROC 0 C, measured in 0.1 Kelvin |
67 | * ATZ_TMP_INVALID temporarily invalid temperature |
68 | * ATZ_ZONE_EXPIRE zone info refetch interval (15 minutes) |
69 | */ |
70 | #define ATZ_TZP_RATE 300 |
71 | #define ATZ_NLEVELS 10 |
72 | #define ATZ_ZEROC 2732 |
73 | #define ATZ_TMP_INVALID 0xffffffff |
74 | #define ATZ_ZONE_EXPIRE 9000 |
75 | |
76 | /* |
77 | * All temperatures are reported in 0.1 Kelvin. |
78 | * The ACPI specification assumes that K = C + 273.2 |
79 | * rather than the nominal 273.15 used by envsys(4). |
80 | */ |
81 | #define ATZ2UKELVIN(t) ((t) * 100000 - 50000) |
82 | |
83 | struct acpitz_zone { |
84 | ACPI_BUFFER al[ATZ_NLEVELS]; |
85 | uint32_t ac[ATZ_NLEVELS]; |
86 | uint32_t crt; |
87 | uint32_t hot; |
88 | uint32_t rtv; |
89 | uint32_t psv; |
90 | uint32_t tc1; |
91 | uint32_t tc2; |
92 | uint32_t tmp; |
93 | uint32_t prevtmp; |
94 | uint32_t tzp; |
95 | uint32_t fanmin; |
96 | uint32_t fanmax; |
97 | uint32_t fancurrent; |
98 | }; |
99 | |
100 | struct acpitz_softc { |
101 | struct acpi_devnode *sc_node; |
102 | struct sysmon_envsys *sc_sme; |
103 | struct acpitz_zone sc_zone; |
104 | struct callout sc_callout; |
105 | envsys_data_t sc_temp_sensor; |
106 | envsys_data_t sc_fan_sensor; |
107 | int sc_active; |
108 | int sc_flags; |
109 | int sc_zone_expire; |
110 | bool sc_first; |
111 | bool sc_have_fan; |
112 | struct cpu_info **sc_psl; |
113 | size_t sc_psl_size; |
114 | }; |
115 | |
116 | static int acpitz_match(device_t, cfdata_t, void *); |
117 | static void acpitz_attach(device_t, device_t, void *); |
118 | static int acpitz_detach(device_t, int); |
119 | static void acpitz_get_status(void *); |
120 | static void acpitz_get_zone(void *, int); |
121 | static void acpitz_get_zone_quiet(void *); |
122 | static char *acpitz_celcius_string(int); |
123 | static void acpitz_power_off(struct acpitz_softc *); |
124 | static void acpitz_power_zone(struct acpitz_softc *, int, int); |
125 | static void acpitz_sane_temp(uint32_t *tmp); |
126 | static ACPI_STATUS acpitz_switch_cooler(ACPI_OBJECT *, void *); |
127 | static void acpitz_notify_handler(ACPI_HANDLE, uint32_t, void *); |
128 | static int acpitz_get_integer(device_t, const char *, uint32_t *); |
129 | static void acpitz_tick(void *); |
130 | static void acpitz_init_envsys(device_t); |
131 | static void acpitz_get_limits(struct sysmon_envsys *, |
132 | envsys_data_t *, |
133 | sysmon_envsys_lim_t *, uint32_t *); |
134 | static int acpitz_get_fanspeed(device_t, uint32_t *, |
135 | uint32_t *, uint32_t *); |
136 | #ifdef notyet |
137 | static ACPI_STATUS acpitz_set_fanspeed(device_t, uint32_t); |
138 | #endif |
139 | static void acpitz_print_processor_list(device_t); |
140 | |
141 | CFATTACH_DECL_NEW(acpitz, sizeof(struct acpitz_softc), |
142 | acpitz_match, acpitz_attach, acpitz_detach, NULL); |
143 | |
144 | /* |
145 | * acpitz_match: autoconf(9) match routine |
146 | */ |
147 | static int |
148 | acpitz_match(device_t parent, cfdata_t match, void *aux) |
149 | { |
150 | struct acpi_attach_args *aa = aux; |
151 | |
152 | if (aa->aa_node->ad_type != ACPI_TYPE_THERMAL) |
153 | return 0; |
154 | |
155 | return 1; |
156 | } |
157 | |
158 | /* |
159 | * acpitz_attach: autoconf(9) attach routine |
160 | */ |
161 | static void |
162 | acpitz_attach(device_t parent, device_t self, void *aux) |
163 | { |
164 | struct acpitz_softc *sc = device_private(self); |
165 | struct acpi_attach_args *aa = aux; |
166 | ACPI_INTEGER val; |
167 | ACPI_STATUS rv; |
168 | |
169 | sc->sc_first = true; |
170 | sc->sc_have_fan = false; |
171 | sc->sc_node = aa->aa_node; |
172 | sc->sc_zone.tzp = ATZ_TZP_RATE; |
173 | |
174 | aprint_naive("\n" ); |
175 | acpitz_print_processor_list(self); |
176 | aprint_normal("\n" ); |
177 | |
178 | /* |
179 | * The _TZP (ACPI 4.0, p. 430) defines the recommended |
180 | * polling interval (in tenths of seconds). A value zero |
181 | * means that polling "should not be necessary". |
182 | */ |
183 | rv = acpi_eval_integer(sc->sc_node->ad_handle, "_TZP" , &val); |
184 | |
185 | if (ACPI_SUCCESS(rv) && val != 0) |
186 | sc->sc_zone.tzp = val; |
187 | |
188 | aprint_debug_dev(self, "polling interval %d.%d seconds\n" , |
189 | sc->sc_zone.tzp / 10, sc->sc_zone.tzp % 10); |
190 | |
191 | sc->sc_zone_expire = ATZ_ZONE_EXPIRE / sc->sc_zone.tzp; |
192 | |
193 | /* |
194 | * XXX: The fan controls seen here are available on |
195 | * some HP laptops. Arguably these should not |
196 | * appear in a generic device driver like this. |
197 | */ |
198 | if (acpitz_get_fanspeed(self, &sc->sc_zone.fanmin, |
199 | &sc->sc_zone.fanmax, &sc->sc_zone.fancurrent) == 0) |
200 | sc->sc_have_fan = true; |
201 | |
202 | acpitz_get_zone(self, 1); |
203 | acpitz_get_status(self); |
204 | |
205 | (void)pmf_device_register(self, NULL, NULL); |
206 | (void)acpi_power_register(sc->sc_node->ad_handle); |
207 | (void)acpi_register_notify(sc->sc_node, acpitz_notify_handler); |
208 | |
209 | callout_init(&sc->sc_callout, CALLOUT_MPSAFE); |
210 | callout_setfunc(&sc->sc_callout, acpitz_tick, self); |
211 | |
212 | acpitz_init_envsys(self); |
213 | |
214 | callout_schedule(&sc->sc_callout, sc->sc_zone.tzp * hz / 10); |
215 | } |
216 | |
217 | static int |
218 | acpitz_detach(device_t self, int flags) |
219 | { |
220 | struct acpitz_softc *sc = device_private(self); |
221 | ACPI_HANDLE hdl; |
222 | ACPI_BUFFER al; |
223 | ACPI_STATUS rv; |
224 | int i; |
225 | |
226 | callout_halt(&sc->sc_callout, NULL); |
227 | callout_destroy(&sc->sc_callout); |
228 | |
229 | pmf_device_deregister(self); |
230 | acpi_deregister_notify(sc->sc_node); |
231 | |
232 | /* |
233 | * Although the device itself should not contain any power |
234 | * resources, we have possibly used the resources of active |
235 | * cooling devices. To unregister these, first fetch a fresh |
236 | * active cooling zone, and then detach the resources from |
237 | * the reference handles contained in the cooling zone. |
238 | */ |
239 | acpitz_get_zone(self, 0); |
240 | |
241 | for (i = 0; i < ATZ_NLEVELS; i++) { |
242 | |
243 | if (sc->sc_zone.al[i].Pointer == NULL) |
244 | continue; |
245 | |
246 | al = sc->sc_zone.al[i]; |
247 | rv = acpi_eval_reference_handle(al.Pointer, &hdl); |
248 | |
249 | if (ACPI_SUCCESS(rv)) |
250 | acpi_power_deregister(hdl); |
251 | |
252 | ACPI_FREE(sc->sc_zone.al[i].Pointer); |
253 | } |
254 | |
255 | if (sc->sc_psl) |
256 | kmem_free(sc->sc_psl, sc->sc_psl_size); |
257 | |
258 | if (sc->sc_sme != NULL) |
259 | sysmon_envsys_unregister(sc->sc_sme); |
260 | |
261 | return 0; |
262 | } |
263 | |
264 | static void |
265 | acpitz_get_zone_quiet(void *opaque) |
266 | { |
267 | acpitz_get_zone(opaque, 0); |
268 | } |
269 | |
270 | static void |
271 | acpitz_get_status(void *opaque) |
272 | { |
273 | device_t dv = opaque; |
274 | struct acpitz_softc *sc = device_private(dv); |
275 | uint32_t tmp, fmin, fmax, fcurrent; |
276 | int active, changed, flags, i; |
277 | |
278 | sc->sc_zone_expire--; |
279 | |
280 | if (sc->sc_zone_expire <= 0) { |
281 | sc->sc_zone_expire = ATZ_ZONE_EXPIRE / sc->sc_zone.tzp; |
282 | |
283 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
284 | "%s: zone refetch forced\n" , device_xname(dv))); |
285 | |
286 | acpitz_get_zone(dv, 0); |
287 | } |
288 | |
289 | if (acpitz_get_integer(dv, "_TMP" , &tmp) != 0) |
290 | return; |
291 | |
292 | sc->sc_zone.prevtmp = sc->sc_zone.tmp; |
293 | sc->sc_zone.tmp = tmp; |
294 | |
295 | if (sc->sc_first != false) |
296 | sc->sc_zone.prevtmp = tmp; /* XXX: Sanity check? */ |
297 | |
298 | if (acpitz_get_fanspeed(dv, &fmin, &fmax, &fcurrent) == 0) { |
299 | |
300 | if (fcurrent != ATZ_TMP_INVALID) |
301 | sc->sc_zone.fancurrent = fcurrent; |
302 | } |
303 | |
304 | sc->sc_temp_sensor.state = ENVSYS_SVALID; |
305 | sc->sc_temp_sensor.value_cur = ATZ2UKELVIN(sc->sc_zone.tmp); |
306 | |
307 | sc->sc_fan_sensor.state = ENVSYS_SVALID; |
308 | sc->sc_fan_sensor.value_cur = sc->sc_zone.fancurrent; |
309 | |
310 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s: zone temperature is %s C\n" , |
311 | device_xname(dv), acpitz_celcius_string(sc->sc_zone.tmp))); |
312 | |
313 | /* |
314 | * XXX: Passive cooling is not yet supported. |
315 | */ |
316 | if ((sc->sc_flags & ATZ_F_PASSIVEONLY) != 0) |
317 | return; |
318 | |
319 | /* |
320 | * As noted in ACPI 4.0 (p. 420), the temperature |
321 | * thresholds are conveyed in the optional _ACx |
322 | * object (x = 0 ... 9). The smaller the x, the |
323 | * greater the cooling level. We prefer to keep |
324 | * the highest cooling mode when in "active". |
325 | */ |
326 | active = ATZ_ACTIVE_NONE; |
327 | |
328 | for (i = ATZ_NLEVELS - 1; i >= 0; i--) { |
329 | |
330 | if (sc->sc_zone.ac[i] == ATZ_TMP_INVALID) |
331 | continue; |
332 | |
333 | if (sc->sc_zone.ac[i] <= tmp) |
334 | active = i; |
335 | } |
336 | |
337 | flags = sc->sc_flags & ~(ATZ_F_CRITICAL | ATZ_F_HOT | ATZ_F_PASSIVE); |
338 | |
339 | if (sc->sc_zone.psv != ATZ_TMP_INVALID && tmp >= sc->sc_zone.psv) |
340 | flags |= ATZ_F_PASSIVE; |
341 | |
342 | if (sc->sc_zone.hot != ATZ_TMP_INVALID && tmp >= sc->sc_zone.hot) |
343 | flags |= ATZ_F_HOT; |
344 | |
345 | if (sc->sc_zone.crt != ATZ_TMP_INVALID && tmp >= sc->sc_zone.crt) |
346 | flags |= ATZ_F_CRITICAL; |
347 | |
348 | if (flags != sc->sc_flags) { |
349 | |
350 | changed = (sc->sc_flags ^ flags) & flags; |
351 | sc->sc_flags = flags; |
352 | |
353 | if ((changed & ATZ_F_CRITICAL) != 0) { |
354 | sc->sc_temp_sensor.state = ENVSYS_SCRITOVER; |
355 | |
356 | aprint_debug_dev(dv, "zone went critical, %s C\n" , |
357 | acpitz_celcius_string(tmp)); |
358 | |
359 | } else if ((changed & ATZ_F_HOT) != 0) { |
360 | sc->sc_temp_sensor.state = ENVSYS_SCRITOVER; |
361 | |
362 | aprint_debug_dev(dv, "zone went hot, %s C\n" , |
363 | acpitz_celcius_string(tmp)); |
364 | } |
365 | } |
366 | |
367 | /* Power on the fans. */ |
368 | if (sc->sc_active != active) { |
369 | |
370 | if (sc->sc_active != ATZ_ACTIVE_NONE) |
371 | acpitz_power_zone(sc, sc->sc_active, 0); |
372 | |
373 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s: active cooling " |
374 | "level %d\n" , device_xname(dv), active)); |
375 | |
376 | if (active != ATZ_ACTIVE_NONE) |
377 | acpitz_power_zone(sc, active, 1); |
378 | |
379 | sc->sc_active = active; |
380 | } |
381 | } |
382 | |
383 | static char * |
384 | acpitz_celcius_string(int dk) |
385 | { |
386 | static char buf[10]; |
387 | int dc; |
388 | |
389 | dc = abs(dk - ATZ_ZEROC); |
390 | |
391 | (void)snprintf(buf, sizeof(buf), "%s%d.%d" , |
392 | (dk >= ATZ_ZEROC) ? "" : "-" , dc / 10, dc % 10); |
393 | |
394 | return buf; |
395 | } |
396 | |
397 | static ACPI_STATUS |
398 | acpitz_switch_cooler(ACPI_OBJECT *obj, void *arg) |
399 | { |
400 | int flag, pwr_state; |
401 | ACPI_HANDLE cooler; |
402 | ACPI_STATUS rv; |
403 | |
404 | /* |
405 | * The _ALx object is a package in which the elements |
406 | * are reference handles to an active cooling device |
407 | * (typically PNP0C0B, ACPI fan device). Try to turn |
408 | * on (or off) the power resources behind these handles |
409 | * to start (or terminate) the active cooling. |
410 | */ |
411 | flag = *(int *)arg; |
412 | pwr_state = (flag != 0) ? ACPI_STATE_D0 : ACPI_STATE_D3; |
413 | |
414 | rv = acpi_eval_reference_handle(obj, &cooler); |
415 | |
416 | if (ACPI_FAILURE(rv)) |
417 | return rv; |
418 | |
419 | (void)acpi_power_set(cooler, pwr_state); |
420 | |
421 | return AE_OK; |
422 | } |
423 | |
424 | /* |
425 | * acpitz_power_zone: |
426 | * |
427 | * Power on or off the i:th part of the zone zone. |
428 | */ |
429 | static void |
430 | acpitz_power_zone(struct acpitz_softc *sc, int i, int on) |
431 | { |
432 | |
433 | KASSERT(i >= 0 && i < ATZ_NLEVELS); |
434 | |
435 | (void)acpi_foreach_package_object(sc->sc_zone.al[i].Pointer, |
436 | acpitz_switch_cooler, &on); |
437 | } |
438 | |
439 | |
440 | /* |
441 | * acpitz_power_off: |
442 | * |
443 | * Power off parts of the zone. |
444 | */ |
445 | static void |
446 | acpitz_power_off(struct acpitz_softc *sc) |
447 | { |
448 | int i; |
449 | |
450 | for (i = 0 ; i < ATZ_NLEVELS; i++) { |
451 | |
452 | if (sc->sc_zone.al[i].Pointer == NULL) |
453 | continue; |
454 | |
455 | acpitz_power_zone(sc, i, 0); |
456 | } |
457 | |
458 | sc->sc_active = ATZ_ACTIVE_NONE; |
459 | sc->sc_flags &= ~(ATZ_F_CRITICAL | ATZ_F_HOT | ATZ_F_PASSIVE); |
460 | } |
461 | |
462 | static void |
463 | acpitz_get_zone(void *opaque, int verbose) |
464 | { |
465 | device_t dv = opaque; |
466 | struct acpitz_softc *sc = device_private(dv); |
467 | int comma, i, valid_levels; |
468 | ACPI_OBJECT *obj; |
469 | ACPI_STATUS rv; |
470 | char buf[5]; |
471 | |
472 | if (sc->sc_first != true) { |
473 | acpitz_power_off(sc); |
474 | |
475 | for (i = 0; i < ATZ_NLEVELS; i++) { |
476 | |
477 | if (sc->sc_zone.al[i].Pointer != NULL) |
478 | ACPI_FREE(sc->sc_zone.al[i].Pointer); |
479 | |
480 | sc->sc_zone.al[i].Pointer = NULL; |
481 | } |
482 | } |
483 | |
484 | valid_levels = 0; |
485 | |
486 | for (i = 0; i < ATZ_NLEVELS; i++) { |
487 | |
488 | (void)snprintf(buf, sizeof(buf), "_AC%d" , i); |
489 | |
490 | if (acpitz_get_integer(dv, buf, &sc->sc_zone.ac[i])) |
491 | continue; |
492 | |
493 | (void)snprintf(buf, sizeof(buf), "_AL%d" , i); |
494 | |
495 | rv = acpi_eval_struct(sc->sc_node->ad_handle, buf, |
496 | &sc->sc_zone.al[i]); |
497 | |
498 | if (ACPI_FAILURE(rv)) { |
499 | sc->sc_zone.al[i].Pointer = NULL; |
500 | continue; |
501 | } |
502 | |
503 | obj = sc->sc_zone.al[i].Pointer; |
504 | |
505 | if (obj->Type != ACPI_TYPE_PACKAGE || obj->Package.Count == 0) { |
506 | sc->sc_zone.al[i].Pointer = NULL; |
507 | ACPI_FREE(obj); |
508 | continue; |
509 | } |
510 | |
511 | if (sc->sc_first != false) |
512 | aprint_normal_dev(dv, "active cooling level %d: %sC\n" , |
513 | i, acpitz_celcius_string(sc->sc_zone.ac[i])); |
514 | |
515 | valid_levels++; |
516 | } |
517 | |
518 | /* |
519 | * A brief summary (ACPI 4.0, section 11.4): |
520 | * |
521 | * _TMP : current temperature (in tenths of degrees) |
522 | * _CRT : critical trip-point at which to shutdown |
523 | * _HOT : critical trip-point at which to go to S4 |
524 | * _PSV : passive cooling policy threshold |
525 | * _TC1 : thermal constant for passive cooling |
526 | * _TC2 : thermal constant for passive cooling |
527 | */ |
528 | (void)acpitz_get_integer(dv, "_TMP" , &sc->sc_zone.tmp); |
529 | (void)acpitz_get_integer(dv, "_CRT" , &sc->sc_zone.crt); |
530 | (void)acpitz_get_integer(dv, "_HOT" , &sc->sc_zone.hot); |
531 | (void)acpitz_get_integer(dv, "_PSV" , &sc->sc_zone.psv); |
532 | (void)acpitz_get_integer(dv, "_TC1" , &sc->sc_zone.tc1); |
533 | (void)acpitz_get_integer(dv, "_TC2" , &sc->sc_zone.tc2); |
534 | |
535 | /* |
536 | * If _RTV is not present or present and zero, |
537 | * values are absolute (see ACPI 4.0, 425). |
538 | */ |
539 | acpitz_get_integer(dv, "_RTV" , &sc->sc_zone.rtv); |
540 | |
541 | if (sc->sc_zone.rtv == ATZ_TMP_INVALID) |
542 | sc->sc_zone.rtv = 0; |
543 | |
544 | acpitz_sane_temp(&sc->sc_zone.tmp); |
545 | acpitz_sane_temp(&sc->sc_zone.crt); |
546 | acpitz_sane_temp(&sc->sc_zone.hot); |
547 | acpitz_sane_temp(&sc->sc_zone.psv); |
548 | |
549 | if (verbose != 0) { |
550 | comma = 0; |
551 | |
552 | aprint_verbose_dev(dv, "levels: " ); |
553 | |
554 | if (sc->sc_zone.crt != ATZ_TMP_INVALID) { |
555 | aprint_verbose("critical %s C" , |
556 | acpitz_celcius_string(sc->sc_zone.crt)); |
557 | comma = 1; |
558 | } |
559 | |
560 | if (sc->sc_zone.hot != ATZ_TMP_INVALID) { |
561 | aprint_verbose("%shot %s C" , comma ? ", " : "" , |
562 | acpitz_celcius_string(sc->sc_zone.hot)); |
563 | comma = 1; |
564 | } |
565 | |
566 | if (sc->sc_zone.psv != ATZ_TMP_INVALID) { |
567 | aprint_verbose("%spassive %s C" , comma ? ", " : "" , |
568 | acpitz_celcius_string(sc->sc_zone.psv)); |
569 | comma = 1; |
570 | } |
571 | |
572 | if (valid_levels == 0) { |
573 | sc->sc_flags |= ATZ_F_PASSIVEONLY; |
574 | |
575 | if (sc->sc_first != false) |
576 | aprint_verbose("%spassive cooling" , comma ? |
577 | ", " : "" ); |
578 | } |
579 | |
580 | aprint_verbose("\n" ); |
581 | } |
582 | |
583 | for (i = 0; i < ATZ_NLEVELS; i++) |
584 | acpitz_sane_temp(&sc->sc_zone.ac[i]); |
585 | |
586 | acpitz_power_off(sc); |
587 | sc->sc_first = false; |
588 | } |
589 | |
590 | static void |
591 | acpitz_notify_handler(ACPI_HANDLE hdl, uint32_t notify, void *opaque) |
592 | { |
593 | ACPI_OSD_EXEC_CALLBACK func = NULL; |
594 | device_t dv = opaque; |
595 | |
596 | switch (notify) { |
597 | |
598 | case ACPI_NOTIFY_TZ_ZONE: |
599 | func = acpitz_get_status; |
600 | break; |
601 | |
602 | case ACPI_NOTIFY_TZ_TRIP: |
603 | case ACPI_NOTIFY_TZ_DEVLIST: |
604 | func = acpitz_get_zone_quiet; |
605 | break; |
606 | |
607 | default: |
608 | aprint_debug_dev(dv, "unknown notify 0x%02X\n" , notify); |
609 | return; |
610 | } |
611 | |
612 | (void)AcpiOsExecute(OSL_NOTIFY_HANDLER, func, dv); |
613 | } |
614 | |
615 | static void |
616 | acpitz_sane_temp(uint32_t *tmp) |
617 | { |
618 | /* Sane temperatures are beteen 0 and 150 C. */ |
619 | if (*tmp < ATZ_ZEROC || *tmp > ATZ_ZEROC + 1500) |
620 | *tmp = ATZ_TMP_INVALID; |
621 | } |
622 | |
623 | static int |
624 | acpitz_get_integer(device_t dv, const char *cm, uint32_t *val) |
625 | { |
626 | struct acpitz_softc *sc = device_private(dv); |
627 | ACPI_INTEGER tmp; |
628 | ACPI_STATUS rv; |
629 | |
630 | rv = acpi_eval_integer(sc->sc_node->ad_handle, cm, &tmp); |
631 | |
632 | if (ACPI_FAILURE(rv)) { |
633 | *val = ATZ_TMP_INVALID; |
634 | |
635 | ACPI_DEBUG_PRINT((ACPI_DB_DEBUG_OBJECT, |
636 | "%s: failed to evaluate %s: %s\n" , |
637 | device_xname(dv), cm, AcpiFormatException(rv))); |
638 | |
639 | return 1; |
640 | } |
641 | |
642 | *val = tmp; |
643 | |
644 | return 0; |
645 | } |
646 | |
647 | static int |
648 | acpitz_get_fanspeed(device_t dv, |
649 | uint32_t *fanmin, uint32_t *fanmax, uint32_t *fancurrent) |
650 | { |
651 | struct acpitz_softc *sc = device_private(dv); |
652 | ACPI_INTEGER fmin, fmax, fcurr; |
653 | ACPI_HANDLE handle; |
654 | ACPI_STATUS rv; |
655 | int rc = 0; |
656 | |
657 | handle = sc->sc_node->ad_handle; |
658 | |
659 | rv = acpi_eval_integer(handle, "FMIN" , &fmin); |
660 | |
661 | if (ACPI_FAILURE(rv)) { |
662 | fmin = ATZ_TMP_INVALID; |
663 | rc = 1; |
664 | } |
665 | |
666 | rv = acpi_eval_integer(handle, "FMAX" , &fmax); |
667 | |
668 | if (ACPI_FAILURE(rv)) { |
669 | fmax = ATZ_TMP_INVALID; |
670 | rc = 1; |
671 | } |
672 | rv = acpi_eval_integer(handle, "FRSP" , &fcurr); |
673 | |
674 | if (ACPI_FAILURE(rv)) { |
675 | fcurr = ATZ_TMP_INVALID; |
676 | rc = 1; |
677 | } |
678 | |
679 | if (fanmin != NULL) |
680 | *fanmin = fmin; |
681 | |
682 | if (fanmax != NULL) |
683 | *fanmax = fmax; |
684 | |
685 | if (fancurrent != NULL) |
686 | *fancurrent = fcurr; |
687 | |
688 | return rc; |
689 | } |
690 | |
691 | #ifdef notyet |
692 | static ACPI_STATUS |
693 | acpitz_set_fanspeed(device_t dv, uint32_t fanspeed) |
694 | { |
695 | struct acpitz_softc *sc = device_private(dv); |
696 | ACPI_HANDLE handle; |
697 | ACPI_STATUS rv; |
698 | |
699 | handle = sc->sc_node->ad_handle; |
700 | |
701 | rv = acpi_eval_set_integer(handle, "FSSP" , fanspeed); |
702 | |
703 | if (ACPI_FAILURE(rv)) |
704 | aprint_debug_dev(dv, "failed to set fan speed to %u RPM: %s\n" , |
705 | fanspeed, AcpiFormatException(rv)); |
706 | |
707 | return rv; |
708 | } |
709 | #endif |
710 | |
711 | static void |
712 | acpitz_print_processor_list(device_t dv) |
713 | { |
714 | struct acpitz_softc *sc = device_private(dv); |
715 | ACPI_HANDLE handle = sc->sc_node->ad_handle; |
716 | ACPI_OBJECT *obj, *pref; |
717 | ACPI_HANDLE prhandle; |
718 | ACPI_BUFFER buf; |
719 | ACPI_STATUS rv; |
720 | struct cpu_info *ci; |
721 | unsigned int i, cnt; |
722 | |
723 | rv = acpi_eval_struct(handle, "_PSL" , &buf); |
724 | |
725 | if (ACPI_FAILURE(rv) || buf.Pointer == NULL) |
726 | return; |
727 | |
728 | obj = buf.Pointer; |
729 | |
730 | if (obj->Type != ACPI_TYPE_PACKAGE || obj->Package.Count == 0) |
731 | goto done; |
732 | |
733 | sc->sc_psl_size = sizeof(ci) * (obj->Package.Count + 1); |
734 | sc->sc_psl = kmem_zalloc(sc->sc_psl_size, KM_SLEEP); |
735 | for (cnt = i = 0; i < obj->Package.Count; i++) { |
736 | |
737 | pref = &obj->Package.Elements[i]; |
738 | rv = acpi_eval_reference_handle(pref, &prhandle); |
739 | |
740 | if (ACPI_FAILURE(rv)) |
741 | continue; |
742 | |
743 | ci = acpi_match_cpu_handle(prhandle); |
744 | |
745 | if (ci == NULL) |
746 | continue; |
747 | |
748 | if (cnt == 0) |
749 | aprint_normal(":" ); |
750 | |
751 | aprint_normal(" %s" , device_xname(ci->ci_dev)); |
752 | |
753 | if (sc->sc_psl) |
754 | sc->sc_psl[cnt] = ci; |
755 | ++cnt; |
756 | } |
757 | |
758 | done: |
759 | ACPI_FREE(buf.Pointer); |
760 | } |
761 | |
762 | static void |
763 | acpitz_tick(void *opaque) |
764 | { |
765 | device_t dv = opaque; |
766 | struct acpitz_softc *sc = device_private(dv); |
767 | |
768 | (void)AcpiOsExecute(OSL_NOTIFY_HANDLER, acpitz_get_status, dv); |
769 | |
770 | callout_schedule(&sc->sc_callout, sc->sc_zone.tzp * hz / 10); |
771 | } |
772 | |
773 | static void |
774 | acpitz_init_envsys(device_t dv) |
775 | { |
776 | const int flags = ENVSYS_FMONLIMITS | ENVSYS_FMONNOTSUPP | |
777 | ENVSYS_FHAS_ENTROPY; |
778 | struct acpitz_softc *sc = device_private(dv); |
779 | unsigned int i; |
780 | |
781 | sc->sc_sme = sysmon_envsys_create(); |
782 | |
783 | sc->sc_sme->sme_cookie = sc; |
784 | sc->sc_sme->sme_name = device_xname(dv); |
785 | sc->sc_sme->sme_flags = SME_DISABLE_REFRESH; |
786 | sc->sc_sme->sme_get_limits = acpitz_get_limits; |
787 | |
788 | sc->sc_temp_sensor.flags = flags; |
789 | sc->sc_temp_sensor.units = ENVSYS_STEMP; |
790 | sc->sc_temp_sensor.state = ENVSYS_SINVALID; |
791 | |
792 | memset(sc->sc_temp_sensor.desc, 0, sizeof(sc->sc_temp_sensor.desc)); |
793 | if (sc->sc_psl) { |
794 | for (i = 0; sc->sc_psl[i] != NULL; i++) { |
795 | if (i > 0) |
796 | strlcat(sc->sc_temp_sensor.desc, "/" , |
797 | sizeof(sc->sc_temp_sensor.desc)); |
798 | strlcat(sc->sc_temp_sensor.desc, |
799 | device_xname(sc->sc_psl[i]->ci_dev), |
800 | sizeof(sc->sc_temp_sensor.desc)); |
801 | } |
802 | strlcat(sc->sc_temp_sensor.desc, " " , |
803 | sizeof(sc->sc_temp_sensor.desc)); |
804 | } |
805 | strlcat(sc->sc_temp_sensor.desc, "temperature" , |
806 | sizeof(sc->sc_temp_sensor.desc)); |
807 | |
808 | if (sysmon_envsys_sensor_attach(sc->sc_sme, &sc->sc_temp_sensor)) |
809 | goto out; |
810 | |
811 | if (sc->sc_have_fan != false) { |
812 | |
813 | sc->sc_fan_sensor.flags = flags; |
814 | sc->sc_fan_sensor.units = ENVSYS_SFANRPM; |
815 | sc->sc_fan_sensor.state = ENVSYS_SINVALID; |
816 | |
817 | (void)strlcpy(sc->sc_fan_sensor.desc, |
818 | "FAN" , sizeof(sc->sc_fan_sensor.desc)); |
819 | |
820 | /* Ignore error because fan sensor is optional. */ |
821 | (void)sysmon_envsys_sensor_attach(sc->sc_sme, |
822 | &sc->sc_fan_sensor); |
823 | } |
824 | |
825 | if (sysmon_envsys_register(sc->sc_sme) == 0) |
826 | return; |
827 | |
828 | out: |
829 | aprint_error_dev(dv, "unable to register with sysmon\n" ); |
830 | |
831 | sysmon_envsys_destroy(sc->sc_sme); |
832 | sc->sc_sme = NULL; |
833 | } |
834 | |
835 | static void |
836 | acpitz_get_limits(struct sysmon_envsys *sme, envsys_data_t *edata, |
837 | sysmon_envsys_lim_t *limits, uint32_t *props) |
838 | { |
839 | struct acpitz_softc *sc = sme->sme_cookie; |
840 | |
841 | switch (edata->units) { |
842 | case ENVSYS_STEMP: |
843 | *props = 0; |
844 | if (sc->sc_zone.hot != ATZ_TMP_INVALID) { |
845 | *props |= PROP_CRITMAX; |
846 | limits->sel_critmax = ATZ2UKELVIN(sc->sc_zone.hot); |
847 | } else if (sc->sc_zone.crt != ATZ_TMP_INVALID) { |
848 | *props |= PROP_CRITMAX; |
849 | limits->sel_critmax = ATZ2UKELVIN(sc->sc_zone.crt); |
850 | } |
851 | break; |
852 | |
853 | case ENVSYS_SFANRPM: |
854 | *props = 0; |
855 | if (sc->sc_zone.fanmin != ATZ_TMP_INVALID) { |
856 | *props |= PROP_WARNMIN; |
857 | limits->sel_warnmin = sc->sc_zone.fanmin; |
858 | } |
859 | if (sc->sc_zone.fanmax != ATZ_TMP_INVALID) { |
860 | *props |= PROP_WARNMAX; |
861 | limits->sel_warnmax = sc->sc_zone.fanmax; |
862 | } |
863 | break; |
864 | } |
865 | } |
866 | |
867 | MODULE(MODULE_CLASS_DRIVER, acpitz, "sysmon_envsys" ); |
868 | |
869 | #ifdef _MODULE |
870 | #include "ioconf.c" |
871 | #endif |
872 | |
873 | static int |
874 | acpitz_modcmd(modcmd_t cmd, void *aux) |
875 | { |
876 | int rv = 0; |
877 | |
878 | switch (cmd) { |
879 | |
880 | case MODULE_CMD_INIT: |
881 | |
882 | #ifdef _MODULE |
883 | rv = config_init_component(cfdriver_ioconf_acpitz, |
884 | cfattach_ioconf_acpitz, cfdata_ioconf_acpitz); |
885 | #endif |
886 | break; |
887 | |
888 | case MODULE_CMD_FINI: |
889 | |
890 | #ifdef _MODULE |
891 | rv = config_fini_component(cfdriver_ioconf_acpitz, |
892 | cfattach_ioconf_acpitz, cfdata_ioconf_acpitz); |
893 | #endif |
894 | break; |
895 | |
896 | default: |
897 | rv = ENOTTY; |
898 | } |
899 | |
900 | return rv; |
901 | } |
902 | |