acpi_tz.c revision 1.13
1 /* $NetBSD: acpi_tz.c,v 1.13 2004/05/26 17:15:17 kochi Exp $ */ 2 3 /* 4 * Copyright (c) 2003 Jared D. McNeill <jmcneill (at) 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 1.13 2004/05/26 17:15:17 kochi Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #include <sys/errno.h> 39 #include <sys/ioctl.h> 40 #include <sys/syslog.h> 41 #include <sys/device.h> 42 #include <sys/callout.h> 43 #include <sys/proc.h> 44 #include <sys/lock.h> 45 #include <dev/sysmon/sysmonvar.h> 46 47 #include <dev/acpi/acpica.h> 48 #include <dev/acpi/acpireg.h> 49 #include <dev/acpi/acpivar.h> 50 51 /* flags */ 52 #define ATZ_F_VERBOSE 0x01 /* show events to console */ 53 #define ATZ_F_CRITICAL 0x02 /* zone critical */ 54 #define ATZ_F_HOT 0x04 /* zone hot */ 55 #define ATZ_F_PASSIVE 0x08 /* zone passive cooling */ 56 #define ATZ_F_PASSIVEONLY 0x10 /* zone is passive cooling only */ 57 58 /* no active cooling level */ 59 #define ATZ_ACTIVE_NONE -1 60 61 /* constants */ 62 #define ATZ_TZP_RATE 300 /* default if no _TZP CM present (30 secs) */ 63 #define ATZ_NLEVELS 10 /* number of cooling levels, from ACPI spec */ 64 #define ATZ_ZEROC 2732 /* 0C in tenths degrees Kelvin */ 65 #define ATZ_TMP_INVALID 0xffffffff /* invalid temperature */ 66 #define ATZ_ZONE_EXPIRE 9000 /* zone info refetch interval (15min) */ 67 68 /* sensor indexes */ 69 #define ATZ_SENSOR_TEMP 0 /* thermal zone temperature */ 70 #define ATZ_NUMSENSORS 1 /* number of sensors */ 71 72 static const struct envsys_range acpitz_ranges[] = { 73 { 0, 1, ATZ_SENSOR_TEMP }, 74 }; 75 76 static int acpitz_match(struct device *, struct cfdata *, void *); 77 static void acpitz_attach(struct device *, struct device *, void *); 78 79 /* 80 * ACPI Temperature Zone information. Note all temperatures are reported 81 * in tenths of degrees Kelvin 82 */ 83 struct acpitz_zone { 84 /* Active cooling temperature threshold */ 85 UINT32 ac[ATZ_NLEVELS]; 86 /* Package of references to all active cooling devices for a level */ 87 ACPI_BUFFER al[ATZ_NLEVELS]; 88 /* Critical temperature threshold for system shutdown */ 89 UINT32 crt; 90 /* Critical temperature threshold for S4 sleep */ 91 UINT32 hot; 92 /* Package of references to processor objects for passive cooling */ 93 ACPI_BUFFER psl; 94 /* Passive cooling temperature threshold */ 95 UINT32 psv; 96 /* Thermal constants for use in passive cooling formulas */ 97 UINT32 tc1, tc2; 98 /* Current temperature of the thermal zone */ 99 UINT32 tmp; 100 /* Thermal sampling period for passive cooling, in tenths of seconds */ 101 UINT32 tsp; 102 /* Package of references to devices in this TZ (optional) */ 103 ACPI_BUFFER tzd; 104 /* Recommended TZ polling frequency, in tenths of seconds */ 105 UINT32 tzp; 106 }; 107 108 struct acpitz_softc { 109 struct device sc_dev; 110 struct acpi_devnode *sc_devnode; 111 struct acpitz_zone sc_zone; 112 struct callout sc_callout; 113 struct envsys_tre_data sc_data[ATZ_NUMSENSORS]; 114 struct envsys_basic_info sc_info[ATZ_NUMSENSORS]; 115 struct sysmon_envsys sc_sysmon; 116 struct simplelock sc_slock; 117 int sc_active; /* active cooling level */ 118 int sc_flags; 119 int sc_rate; /* tz poll rate */ 120 int sc_zone_expire; 121 }; 122 123 static void acpitz_get_status(void *); 124 static void acpitz_get_zone(void *); 125 static char* acpitz_celcius_string(int); 126 static void acpitz_print_status(struct acpitz_softc *); 127 static void acpitz_power_off(struct acpitz_softc *); 128 static void acpitz_power_zone(struct acpitz_softc *, int, int); 129 static void acpitz_sane_temp(UINT32 *tmp); 130 static ACPI_STATUS 131 acpitz_switch_cooler(ACPI_OBJECT *, void *); 132 static void acpitz_notify_handler(ACPI_HANDLE, UINT32, void *); 133 static int acpitz_get_integer(struct acpitz_softc *, char *, UINT32 *); 134 static void acpitz_tick(void *); 135 static void acpitz_init_envsys(struct acpitz_softc *); 136 static int acpitz_gtredata(struct sysmon_envsys *, 137 struct envsys_tre_data *); 138 static int acpitz_streinfo(struct sysmon_envsys *, 139 struct envsys_basic_info *); 140 141 CFATTACH_DECL(acpitz, sizeof(struct acpitz_softc), acpitz_match, 142 acpitz_attach, NULL, NULL); 143 144 /* 145 * acpitz_match: autoconf(9) match routine 146 */ 147 static int 148 acpitz_match(struct device *parent, struct cfdata *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(struct device *parent, struct device *self, void *aux) 163 { 164 struct acpitz_softc *sc = (struct acpitz_softc *)self; 165 struct acpi_attach_args *aa = aux; 166 ACPI_STATUS rv; 167 ACPI_INTEGER v; 168 169 #if 0 170 sc->sc_flags = ATZ_F_VERBOSE; 171 #endif 172 sc->sc_devnode = aa->aa_node; 173 174 printf(": ACPI Thermal Zone\n"); 175 176 rv = acpi_eval_integer(sc->sc_devnode->ad_handle, "_TZP", &v); 177 if (ACPI_FAILURE(rv)) { 178 printf("%s: unable to get polling interval; using default of", 179 sc->sc_dev.dv_xname); 180 sc->sc_zone.tzp = ATZ_TZP_RATE; 181 } else { 182 sc->sc_zone.tzp = v; 183 printf("%s: polling interval is", sc->sc_dev.dv_xname); 184 } 185 printf(" %d.%ds\n", sc->sc_zone.tzp / 10, sc->sc_zone.tzp % 10); 186 187 /* XXX a value of 0 means "polling is not necessary" */ 188 if (sc->sc_zone.tzp == 0) 189 sc->sc_zone.tzp = ATZ_TZP_RATE; 190 191 sc->sc_zone_expire = ATZ_ZONE_EXPIRE / sc->sc_zone.tzp; 192 193 acpitz_get_zone(sc); 194 acpitz_get_status(sc); 195 196 rv = AcpiInstallNotifyHandler(sc->sc_devnode->ad_handle, 197 ACPI_SYSTEM_NOTIFY, acpitz_notify_handler, sc); 198 if (ACPI_FAILURE(rv)) { 199 printf("%s: unable to install SYSTEM NOTIFY handler: %s\n", 200 sc->sc_dev.dv_xname, AcpiFormatException(rv)); 201 return; 202 } 203 204 callout_init(&sc->sc_callout); 205 callout_reset(&sc->sc_callout, sc->sc_zone.tzp * hz / 10, 206 acpitz_tick, sc); 207 208 acpitz_init_envsys(sc); 209 } 210 211 static void 212 acpitz_get_status(void *opaque) 213 { 214 struct acpitz_softc *sc = opaque; 215 UINT32 tmp, active; 216 int i, flags; 217 218 sc->sc_zone_expire--; 219 if (sc->sc_zone_expire <= 0) { 220 sc->sc_zone_expire = ATZ_ZONE_EXPIRE / sc->sc_zone.tzp; 221 if (sc->sc_flags & ATZ_F_VERBOSE) 222 printf("%s: force refetch zone\n", sc->sc_dev.dv_xname); 223 acpitz_get_zone(sc); 224 } 225 226 if (acpitz_get_integer(sc, "_TMP", &tmp)) { 227 printf("%s: failed to evaluate _TMP\n", sc->sc_dev.dv_xname); 228 return; 229 } 230 sc->sc_zone.tmp = tmp; 231 /* XXX sanity check for tmp here? */ 232 233 /* 234 * The temperature unit for envsys(4) is microKelvin, so convert to 235 * that from ACPI's microKelvin. Also, the ACPI specification assumes 236 * that K = C + 273.2 rather than the nominal 273.15 used by envsys(4), 237 * so we correct for that too. 238 */ 239 sc->sc_data[ATZ_SENSOR_TEMP].cur.data_us = 240 sc->sc_zone.tmp * 100000 - 50000; 241 sc->sc_data[ATZ_SENSOR_TEMP].validflags |= ENVSYS_FCURVALID; 242 243 if (sc->sc_flags & ATZ_F_VERBOSE) 244 acpitz_print_status(sc); 245 246 if (sc->sc_flags & ATZ_F_PASSIVEONLY) { 247 /* Passive Cooling: XXX not yet */ 248 249 } else { 250 /* Active Cooling */ 251 252 /* temperature threshold: _AC0 > ... > _AC9 */ 253 active = ATZ_ACTIVE_NONE; 254 for (i = ATZ_NLEVELS - 1; i >= 0; i--) { 255 if (sc->sc_zone.ac[i] == ATZ_TMP_INVALID) 256 continue; 257 258 /* we want to keep highest cooling mode in 'active' */ 259 if (sc->sc_zone.ac[i] <= tmp) 260 active = i; 261 } 262 263 flags = sc->sc_flags & ~(ATZ_F_CRITICAL|ATZ_F_HOT|ATZ_F_PASSIVE); 264 if (sc->sc_zone.psv != ATZ_TMP_INVALID && 265 tmp >= sc->sc_zone.psv) 266 flags |= ATZ_F_PASSIVE; 267 if (sc->sc_zone.hot != ATZ_TMP_INVALID && 268 tmp >= sc->sc_zone.hot) 269 flags |= ATZ_F_HOT; 270 if (sc->sc_zone.crt != ATZ_TMP_INVALID && 271 tmp >= sc->sc_zone.crt) 272 flags |= ATZ_F_CRITICAL; 273 274 if (flags != sc->sc_flags) { 275 int changed = (sc->sc_flags ^ flags) & flags; 276 sc->sc_flags = flags; 277 if (changed & ATZ_F_CRITICAL) 278 printf("%s: zone went critical at temp %sC\n", 279 sc->sc_dev.dv_xname, 280 acpitz_celcius_string(tmp)); 281 else if (changed & ATZ_F_HOT) 282 printf("%s: zone went hot at temp %sC\n", 283 sc->sc_dev.dv_xname, 284 acpitz_celcius_string(tmp)); 285 } 286 287 /* power on fans */ 288 if (sc->sc_active != active) { 289 if (sc->sc_active != ATZ_ACTIVE_NONE) 290 acpitz_power_zone(sc, sc->sc_active, 0); 291 292 if (active != ATZ_ACTIVE_NONE) { 293 if (sc->sc_flags & ATZ_F_VERBOSE) 294 printf("%s: active cooling level %u\n", 295 sc->sc_dev.dv_xname, active); 296 acpitz_power_zone(sc, active, 1); 297 } 298 299 sc->sc_active = active; 300 } 301 } 302 303 return; 304 } 305 306 static char * 307 acpitz_celcius_string(int dk) 308 { 309 static char buf[10]; 310 311 snprintf(buf, sizeof(buf), "%d.%d", (dk - ATZ_ZEROC) / 10, 312 (dk - ATZ_ZEROC) % 10); 313 314 return buf; 315 } 316 317 static void 318 acpitz_print_status(struct acpitz_softc *sc) 319 { 320 321 printf("%s: zone temperature is now %sC\n", sc->sc_dev.dv_xname, 322 acpitz_celcius_string(sc->sc_zone.tmp)); 323 324 return; 325 } 326 327 static ACPI_STATUS 328 acpitz_switch_cooler(ACPI_OBJECT *obj, void *arg) 329 { 330 ACPI_HANDLE cooler; 331 ACPI_STATUS rv; 332 int pwr_state, flag; 333 334 flag = *(int *)arg; 335 336 if (flag) 337 pwr_state = ACPI_STATE_D0; 338 else 339 pwr_state = ACPI_STATE_D3; 340 341 switch(obj->Type) { 342 case ACPI_TYPE_ANY: 343 cooler = obj->Reference.Handle; 344 break; 345 case ACPI_TYPE_STRING: 346 rv = AcpiGetHandle(NULL, obj->String.Pointer, &cooler); 347 if (ACPI_FAILURE(rv)) { 348 printf("failed to get handler from %s\n", 349 obj->String.Pointer); 350 return rv; 351 } 352 break; 353 default: 354 printf("unknown power type: %d\n", obj->Type); 355 return AE_OK; 356 } 357 358 rv = acpi_pwr_switch_consumer(cooler, pwr_state); 359 if (rv != AE_BAD_PARAMETER && ACPI_FAILURE(rv)) { 360 printf("failed to change state for %s: %s\n", 361 acpi_name(obj->Reference.Handle), 362 AcpiFormatException(rv)); 363 } 364 365 return AE_OK; 366 } 367 368 /* 369 * acpitz_power_zone: 370 * power on or off the i:th part of the zone zone 371 */ 372 static void 373 acpitz_power_zone(struct acpitz_softc *sc, int i, int on) 374 { 375 KASSERT(i >= 0 && i < ATZ_NLEVELS); 376 377 acpi_foreach_package_object(sc->sc_zone.al[i].Pointer, 378 acpitz_switch_cooler, &on); 379 } 380 381 382 /* 383 * acpitz_power_off: 384 * power off parts of the zone 385 */ 386 static void 387 acpitz_power_off(struct acpitz_softc *sc) 388 { 389 int i; 390 391 for (i = 0 ; i < ATZ_NLEVELS; i++) { 392 if (sc->sc_zone.al[i].Pointer == NULL) 393 continue; 394 acpitz_power_zone(sc, i, 0); 395 } 396 sc->sc_active = ATZ_ACTIVE_NONE; 397 sc->sc_flags &= ~(ATZ_F_CRITICAL|ATZ_F_HOT|ATZ_F_PASSIVE); 398 } 399 400 static void 401 acpitz_get_zone(void *opaque) 402 { 403 struct acpitz_softc *sc = opaque; 404 ACPI_STATUS rv; 405 char buf[8]; 406 int i, valid_levels; 407 static int first = 1; 408 409 if (!first) { 410 acpitz_power_off(sc); 411 412 for (i = 0; i < ATZ_NLEVELS; i++) { 413 if (sc->sc_zone.al[i].Pointer != NULL) 414 AcpiOsFree(sc->sc_zone.al[i].Pointer); 415 sc->sc_zone.al[i].Pointer = NULL; 416 } 417 } 418 419 valid_levels = 0; 420 421 for (i = 0; i < ATZ_NLEVELS; i++) { 422 ACPI_OBJECT *obj; 423 424 snprintf(buf, sizeof(buf), "_AC%d", i); 425 if (acpitz_get_integer(sc, buf, &sc->sc_zone.ac[i])) 426 continue; 427 428 snprintf(buf, sizeof(buf), "_AL%d", i); 429 rv = acpi_eval_struct(sc->sc_devnode->ad_handle, buf, 430 &sc->sc_zone.al[i]); 431 if (ACPI_FAILURE(rv)) { 432 printf("failed getting _AL%d", i); 433 sc->sc_zone.al[i].Pointer = NULL; 434 continue; 435 } 436 437 obj = sc->sc_zone.al[i].Pointer; 438 if (obj != NULL) { 439 if (obj->Type != ACPI_TYPE_PACKAGE) { 440 printf("%s: ac%d not package\n", 441 sc->sc_dev.dv_xname, i); 442 AcpiOsFree(obj); 443 sc->sc_zone.al[i].Pointer = NULL; 444 continue; 445 } 446 } 447 448 if (first) 449 printf("%s: active cooling level %d: %sC\n", 450 sc->sc_dev.dv_xname, i, 451 acpitz_celcius_string(sc->sc_zone.ac[i])); 452 453 valid_levels++; 454 } 455 456 if (valid_levels == 0) { 457 sc->sc_flags |= ATZ_F_PASSIVEONLY; 458 if (first) 459 printf("%s: passive cooling mode only\n", 460 sc->sc_dev.dv_xname); 461 } 462 463 acpitz_get_integer(sc, "_TMP", &sc->sc_zone.tmp); 464 acpitz_get_integer(sc, "_CRT", &sc->sc_zone.crt); 465 acpitz_get_integer(sc, "_HOT", &sc->sc_zone.hot); 466 sc->sc_zone.psl.Length = ACPI_ALLOCATE_BUFFER; 467 sc->sc_zone.psl.Pointer = NULL; 468 AcpiEvaluateObject(sc, "_PSL", NULL, &sc->sc_zone.psl); 469 acpitz_get_integer(sc, "_PSV", &sc->sc_zone.psv); 470 acpitz_get_integer(sc, "_TC1", &sc->sc_zone.tc1); 471 acpitz_get_integer(sc, "_TC2", &sc->sc_zone.tc2); 472 473 acpitz_sane_temp(&sc->sc_zone.tmp); 474 acpitz_sane_temp(&sc->sc_zone.crt); 475 acpitz_sane_temp(&sc->sc_zone.hot); 476 acpitz_sane_temp(&sc->sc_zone.psv); 477 478 printf("%s:", sc->sc_dev.dv_xname); 479 if (sc->sc_zone.crt != ATZ_TMP_INVALID) 480 printf(" critical %sC", 481 acpitz_celcius_string(sc->sc_zone.crt)); 482 if (sc->sc_zone.hot != ATZ_TMP_INVALID) 483 printf(" hot %sC", 484 acpitz_celcius_string(sc->sc_zone.hot)); 485 if (sc->sc_zone.psv != ATZ_TMP_INVALID) 486 printf(" passive %sC", 487 acpitz_celcius_string(sc->sc_zone.tmp)); 488 printf("\n"); 489 490 for (i = 0; i < ATZ_NLEVELS; i++) 491 acpitz_sane_temp(&sc->sc_zone.ac[i]); 492 493 acpitz_power_off(sc); 494 first = 0; 495 } 496 497 498 static void 499 acpitz_notify_handler(ACPI_HANDLE hdl, UINT32 notify, void *opaque) 500 { 501 struct acpitz_softc *sc = opaque; 502 OSD_EXECUTION_CALLBACK func = NULL; 503 const char *name; 504 int rv; 505 506 switch (notify) { 507 case ACPI_NOTIFY_ThermalZoneStatusChanged: 508 func = acpitz_get_status; 509 name = "status check"; 510 break; 511 case ACPI_NOTIFY_ThermalZoneTripPointsChanged: 512 case ACPI_NOTIFY_DeviceListsChanged: 513 func = acpitz_get_zone; 514 name = "get zone"; 515 break; 516 default: 517 printf("%s: received unhandled notify message 0x%x\n", 518 sc->sc_dev.dv_xname, notify); 519 return; 520 } 521 522 KASSERT(func != NULL); 523 524 rv = AcpiOsQueueForExecution(OSD_PRIORITY_LO, func, sc); 525 if (rv != AE_OK) 526 printf("%s: unable to queue %s\n", sc->sc_dev.dv_xname, name); 527 528 return; 529 } 530 531 static void 532 acpitz_sane_temp(UINT32 *tmp) 533 { 534 /* Sane temperatures are beteen 0 and 150 C */ 535 if (*tmp < ATZ_ZEROC || *tmp > ATZ_ZEROC + 1500) 536 *tmp = ATZ_TMP_INVALID; 537 } 538 539 static int 540 acpitz_get_integer(struct acpitz_softc *sc, char *cm, UINT32 *val) 541 { 542 ACPI_STATUS rv; 543 ACPI_INTEGER tmp; 544 545 rv = acpi_eval_integer(sc->sc_devnode->ad_handle, cm, &tmp); 546 if (ACPI_FAILURE(rv)) { 547 #ifdef ACPI_DEBUG 548 printf("%s: failed to evaluate %s: %s\n", sc->sc_dev.dv_xname, 549 cm, AcpiFormatException(rv)); 550 #endif 551 *val = ATZ_TMP_INVALID; 552 return 1; 553 } 554 555 *val = tmp; 556 557 return 0; 558 } 559 560 static void 561 acpitz_tick(void *opaque) 562 { 563 struct acpitz_softc *sc = opaque; 564 565 callout_reset(&sc->sc_callout, sc->sc_zone.tzp * hz / 10, 566 acpitz_tick, opaque); 567 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpitz_get_status, sc); 568 569 return; 570 } 571 572 static void 573 acpitz_init_envsys(struct acpitz_softc *sc) 574 { 575 int i; 576 577 simple_lock_init(&sc->sc_slock); 578 579 for (i = 0; i < ATZ_NUMSENSORS; i++) { 580 sc->sc_data[i].sensor = sc->sc_info[i].sensor = i; 581 sc->sc_data[i].validflags = ENVSYS_FVALID; 582 sc->sc_info[i].validflags = ENVSYS_FVALID; 583 sc->sc_data[i].warnflags = ENVSYS_WARN_OK; 584 } 585 #define INITDATA(index, unit, string) \ 586 sc->sc_data[index].units = unit; \ 587 sc->sc_info[index].units = unit; \ 588 snprintf(sc->sc_info[index].desc, sizeof(sc->sc_info[index].desc), \ 589 "%s %s", sc->sc_dev.dv_xname, string); 590 591 INITDATA(ATZ_SENSOR_TEMP, ENVSYS_STEMP, "temperature"); 592 593 /* hook into sysmon */ 594 sc->sc_sysmon.sme_ranges = acpitz_ranges; 595 sc->sc_sysmon.sme_sensor_info = sc->sc_info; 596 sc->sc_sysmon.sme_sensor_data = sc->sc_data; 597 sc->sc_sysmon.sme_cookie = sc; 598 sc->sc_sysmon.sme_gtredata = acpitz_gtredata; 599 sc->sc_sysmon.sme_streinfo = acpitz_streinfo; 600 sc->sc_sysmon.sme_nsensors = ATZ_NUMSENSORS; 601 sc->sc_sysmon.sme_envsys_version = 1000; 602 603 if (sysmon_envsys_register(&sc->sc_sysmon)) 604 printf("%s: unable to register with sysmon\n", 605 sc->sc_dev.dv_xname); 606 } 607 608 int 609 acpitz_gtredata(struct sysmon_envsys *sme, struct envsys_tre_data *tred) 610 { 611 struct acpitz_softc *sc = sme->sme_cookie; 612 613 simple_lock(&sc->sc_slock); 614 615 *tred = sc->sc_data[tred->sensor]; 616 617 simple_unlock(&sc->sc_slock); 618 619 return 0; 620 } 621 622 static int 623 acpitz_streinfo(struct sysmon_envsys *sme, struct envsys_basic_info *binfo) 624 { 625 626 /* XXX not implemented */ 627 binfo->validflags = 0; 628 629 return 0; 630 } 631
Indexes created Mon Sep 29 21:09:56 GMT 2025