acpi_tz.c revision 1.60
1 /* $NetBSD: acpi_tz.c,v 1.60 2010/03/05 12:44:16 pgoyette 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 1.60 2010/03/05 12:44:16 pgoyette 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 <dev/sysmon/sysmonvar.h> 45 46 #include <dev/acpi/acpica.h> 47 #include <dev/acpi/acpireg.h> 48 #include <dev/acpi/acpivar.h> 49 50 #define _COMPONENT ACPI_TZ_COMPONENT 51 ACPI_MODULE_NAME ("acpi_tz") 52 53 /* flags */ 54 #define ATZ_F_VERBOSE 0x01 /* show events to console */ 55 #define ATZ_F_CRITICAL 0x02 /* zone critical */ 56 #define ATZ_F_HOT 0x04 /* zone hot */ 57 #define ATZ_F_PASSIVE 0x08 /* zone passive cooling */ 58 #define ATZ_F_PASSIVEONLY 0x10 /* zone is passive cooling only */ 59 60 /* no active cooling level */ 61 #define ATZ_ACTIVE_NONE -1 62 63 /* constants */ 64 #define ATZ_TZP_RATE 300 /* default if no _TZP CM present (30 secs) */ 65 #define ATZ_NLEVELS 10 /* number of cooling levels, from ACPI spec */ 66 #define ATZ_ZEROC 2732 /* 0C, measured in 0.1 Kelvin */ 67 #define ATZ_TMP_INVALID 0xffffffff /* invalid temperature */ 68 #define ATZ_ZONE_EXPIRE 9000 /* zone info refetch interval (15min) */ 69 70 /* sensor indexes */ 71 #define ATZ_SENSOR_TEMP 0 /* thermal zone temperature */ 72 73 static int acpitz_match(device_t, cfdata_t, void *); 74 static void acpitz_attach(device_t, device_t, void *); 75 76 /* 77 * ACPI Temperature Zone information. Note all temperatures are reported 78 * in 0.1 Kelvin, and that the ACPI specification assumes that 79 * K = C + 273.2 rather than the nominal 273.15 used by envsys(4). 80 * So define an appropriate conversion. 81 */ 82 83 #define ATZ2UKELVIN(t) ((t) * 100000 - 50000) 84 85 struct acpitz_zone { 86 /* Active cooling temperature threshold */ 87 UINT32 ac[ATZ_NLEVELS]; 88 /* Package of references to all active cooling devices for a level */ 89 ACPI_BUFFER al[ATZ_NLEVELS]; 90 /* Critical temperature threshold for system shutdown */ 91 UINT32 crt; 92 /* Critical temperature threshold for S4 sleep */ 93 UINT32 hot; 94 /* Package of references to processor objects for passive cooling */ 95 ACPI_BUFFER psl; 96 /* Conveys if temperatures are absolute or relative values. */ 97 UINT32 rtv; 98 /* Passive cooling temperature threshold */ 99 UINT32 psv; 100 /* Thermal constants for use in passive cooling formulas */ 101 UINT32 tc1, tc2; 102 /* Current temperature of the thermal zone */ 103 UINT32 prevtmp, tmp; 104 /* Thermal sampling period for passive cooling, in tenths of seconds */ 105 UINT32 tsp; 106 /* Package of references to devices in this TZ (optional) */ 107 ACPI_BUFFER tzd; 108 /* Recommended TZ polling frequency, in tenths of seconds */ 109 UINT32 tzp; 110 /* Thermal zone name */ 111 char *name; 112 /* FAN min, max, current rpms */ 113 UINT32 fanmin, fanmax, fancurrent; 114 }; 115 116 struct acpitz_softc { 117 struct acpi_devnode *sc_devnode; 118 struct acpitz_zone sc_zone; 119 struct callout sc_callout; 120 struct sysmon_envsys *sc_sme; 121 envsys_data_t sc_temp_sensor; 122 envsys_data_t sc_fan_sensor; 123 int sc_active; /* active cooling level */ 124 int sc_flags; 125 int sc_rate; /* tz poll rate */ 126 int sc_zone_expire; 127 128 int sc_first; 129 int sc_have_fan; /* FAN sensor is optional */ 130 }; 131 132 static void acpitz_get_status(void *); 133 static void acpitz_get_zone(void *, int); 134 static void acpitz_get_zone_quiet(void *); 135 static char *acpitz_celcius_string(int); 136 static void acpitz_print_status(device_t); 137 static void acpitz_power_off(struct acpitz_softc *); 138 static void acpitz_power_zone(struct acpitz_softc *, int, int); 139 static void acpitz_sane_temp(UINT32 *tmp); 140 static ACPI_STATUS 141 acpitz_switch_cooler(ACPI_OBJECT *, void *); 142 static void acpitz_notify_handler(ACPI_HANDLE, UINT32, void *); 143 static int acpitz_get_integer(device_t, const char *, UINT32 *); 144 static void acpitz_tick(void *); 145 static void acpitz_init_envsys(device_t); 146 static void acpitz_get_limits(struct sysmon_envsys *, envsys_data_t *, 147 sysmon_envsys_lim_t *, uint32_t *); 148 static int acpitz_get_fanspeed(device_t, UINT32 *, UINT32 *, UINT32 *); 149 #ifdef notyet 150 static ACPI_STATUS 151 acpitz_set_fanspeed(device_t, UINT32); 152 #endif 153 154 CFATTACH_DECL_NEW(acpitz, sizeof(struct acpitz_softc), acpitz_match, 155 acpitz_attach, NULL, NULL); 156 157 /* 158 * acpitz_match: autoconf(9) match routine 159 */ 160 static int 161 acpitz_match(device_t parent, cfdata_t match, void *aux) 162 { 163 struct acpi_attach_args *aa = aux; 164 165 if (aa->aa_node->ad_type != ACPI_TYPE_THERMAL) 166 return 0; 167 168 return 1; 169 } 170 171 /* 172 * acpitz_attach: autoconf(9) attach routine 173 */ 174 static void 175 acpitz_attach(device_t parent, device_t self, void *aux) 176 { 177 struct acpitz_softc *sc = device_private(self); 178 struct acpi_attach_args *aa = aux; 179 ACPI_STATUS rv; 180 ACPI_INTEGER v; 181 182 #if 0 183 sc->sc_flags = ATZ_F_VERBOSE; 184 #endif 185 sc->sc_devnode = aa->aa_node; 186 187 aprint_naive("\n"); 188 189 rv = acpi_eval_integer(sc->sc_devnode->ad_handle, "_TZP", &v); 190 if (ACPI_FAILURE(rv)) 191 sc->sc_zone.tzp = ATZ_TZP_RATE; 192 else 193 sc->sc_zone.tzp = v; 194 195 aprint_debug(" sample rate %d.%ds\n", 196 sc->sc_zone.tzp / 10, sc->sc_zone.tzp % 10); 197 198 /* XXX a value of 0 means "polling is not necessary" */ 199 if (sc->sc_zone.tzp == 0) 200 sc->sc_zone.tzp = ATZ_TZP_RATE; 201 202 sc->sc_zone_expire = ATZ_ZONE_EXPIRE / sc->sc_zone.tzp; 203 sc->sc_first = 1; 204 sc->sc_have_fan = 0; 205 if (acpitz_get_fanspeed(self, 206 &sc->sc_zone.fanmin, &sc->sc_zone.fanmax, &sc->sc_zone.fancurrent) 207 == 0) 208 sc->sc_have_fan = 1; 209 210 rv = acpi_eval_string(sc->sc_devnode->ad_handle, 211 "REGN", &sc->sc_zone.name); 212 if (ACPI_FAILURE(rv)) 213 sc->sc_zone.name = __UNCONST("temperature"); 214 acpitz_get_zone(self, 1); 215 acpitz_get_status(self); 216 217 rv = AcpiInstallNotifyHandler(sc->sc_devnode->ad_handle, 218 ACPI_DEVICE_NOTIFY, acpitz_notify_handler, self); 219 220 if (ACPI_FAILURE(rv)) 221 return; 222 223 callout_init(&sc->sc_callout, CALLOUT_MPSAFE); 224 callout_setfunc(&sc->sc_callout, acpitz_tick, self); 225 226 acpitz_init_envsys(self); 227 228 if (!pmf_device_register(self, NULL, NULL)) 229 aprint_error(": couldn't establish power handler\n"); 230 231 callout_schedule(&sc->sc_callout, sc->sc_zone.tzp * hz / 10); 232 } 233 234 static void 235 acpitz_get_zone_quiet(void *opaque) 236 { 237 acpitz_get_zone(opaque, 0); 238 } 239 240 static void 241 acpitz_get_status(void *opaque) 242 { 243 device_t dv = opaque; 244 struct acpitz_softc *sc = device_private(dv); 245 UINT32 tmp, active; 246 int i, flags; 247 UINT32 fmin, fmax, fcurrent; 248 249 sc->sc_zone_expire--; 250 if (sc->sc_zone_expire <= 0) { 251 sc->sc_zone_expire = ATZ_ZONE_EXPIRE / sc->sc_zone.tzp; 252 if (sc->sc_flags & ATZ_F_VERBOSE) 253 printf("%s: force refetch zone\n", device_xname(dv)); 254 acpitz_get_zone(dv, 0); 255 } 256 257 if (acpitz_get_integer(dv, "_TMP", &tmp)) { 258 aprint_error_dev(dv, "failed to evaluate _TMP\n"); 259 return; 260 } 261 262 sc->sc_zone.prevtmp = sc->sc_zone.tmp; 263 sc->sc_zone.tmp = tmp; 264 if (sc->sc_first) 265 sc->sc_zone.prevtmp = tmp; 266 /* XXX sanity check for tmp here? */ 267 268 if (acpitz_get_fanspeed(dv, &fmin, &fmax, &fcurrent) == 0) { 269 if (fcurrent != ATZ_TMP_INVALID) 270 sc->sc_zone.fancurrent = fcurrent; 271 } 272 273 /* 274 * The temperature unit for envsys(4) is microKelvin, so convert to 275 * that from ACPI's microKelvin. Also, the ACPI specification assumes 276 * that K = C + 273.2 rather than the nominal 273.15 used by envsys(4), 277 * so we correct for that too. 278 */ 279 sc->sc_temp_sensor.value_cur = ATZ2UKELVIN(sc->sc_zone.tmp); 280 sc->sc_temp_sensor.state = ENVSYS_SVALID; 281 282 sc->sc_fan_sensor.value_cur = sc->sc_zone.fancurrent; 283 sc->sc_fan_sensor.state = ENVSYS_SVALID; 284 285 if (sc->sc_flags & ATZ_F_VERBOSE) 286 acpitz_print_status(dv); 287 288 if (sc->sc_flags & ATZ_F_PASSIVEONLY) { 289 /* Passive Cooling: XXX not yet */ 290 291 } else { 292 /* Active Cooling */ 293 294 /* temperature threshold: _AC0 > ... > _AC9 */ 295 active = ATZ_ACTIVE_NONE; 296 for (i = ATZ_NLEVELS - 1; i >= 0; i--) { 297 if (sc->sc_zone.ac[i] == ATZ_TMP_INVALID) 298 continue; 299 300 /* we want to keep highest cooling mode in 'active' */ 301 if (sc->sc_zone.ac[i] <= tmp) 302 active = i; 303 } 304 305 flags = sc->sc_flags & 306 ~(ATZ_F_CRITICAL|ATZ_F_HOT|ATZ_F_PASSIVE); 307 if (sc->sc_zone.psv != ATZ_TMP_INVALID && 308 tmp >= sc->sc_zone.psv) 309 flags |= ATZ_F_PASSIVE; 310 if (sc->sc_zone.hot != ATZ_TMP_INVALID && 311 tmp >= sc->sc_zone.hot) 312 flags |= ATZ_F_HOT; 313 if (sc->sc_zone.crt != ATZ_TMP_INVALID && 314 tmp >= sc->sc_zone.crt) 315 flags |= ATZ_F_CRITICAL; 316 317 if (flags != sc->sc_flags) { 318 int changed = (sc->sc_flags ^ flags) & flags; 319 sc->sc_flags = flags; 320 if (changed & ATZ_F_CRITICAL) { 321 sc->sc_temp_sensor.state = ENVSYS_SCRITOVER; 322 aprint_debug_dev(dv, 323 "zone went critical at temp %sC\n", 324 acpitz_celcius_string(tmp)); 325 } else if (changed & ATZ_F_HOT) { 326 sc->sc_temp_sensor.state = ENVSYS_SCRITOVER; 327 aprint_debug_dev(dv, 328 "zone went hot at temp %sC\n", 329 acpitz_celcius_string(tmp)); 330 } 331 } 332 333 /* power on fans */ 334 if (sc->sc_active != active) { 335 if (sc->sc_active != ATZ_ACTIVE_NONE) 336 acpitz_power_zone(sc, sc->sc_active, 0); 337 338 if (active != ATZ_ACTIVE_NONE) { 339 if (sc->sc_flags & ATZ_F_VERBOSE) 340 printf("%s: active cooling level %u\n", 341 device_xname(dv), active); 342 acpitz_power_zone(sc, active, 1); 343 } else if (sc->sc_flags & ATZ_F_VERBOSE) 344 printf("%s: no active cooling level\n", 345 device_xname(dv)); 346 347 sc->sc_active = active; 348 } 349 } 350 351 return; 352 } 353 354 static char * 355 acpitz_celcius_string(int dk) 356 { 357 static char buf[10]; 358 int dc; 359 360 dc = abs(dk - ATZ_ZEROC); 361 snprintf(buf, sizeof(buf), "%s%d.%d", (dk >= ATZ_ZEROC)?"":"-", 362 dc / 10, dc % 10); 363 364 return buf; 365 } 366 367 static void 368 acpitz_print_status(device_t dv) 369 { 370 struct acpitz_softc *sc = device_private(dv); 371 372 printf("%s: zone temperature is now %sC\n", device_xname(dv), 373 acpitz_celcius_string(sc->sc_zone.tmp)); 374 if (sc->sc_have_fan) { 375 printf("%s: fan rpm %u\n", device_xname(dv), 376 sc->sc_zone.fancurrent); 377 } 378 379 return; 380 } 381 382 static ACPI_STATUS 383 acpitz_switch_cooler(ACPI_OBJECT *obj, void *arg) 384 { 385 ACPI_HANDLE cooler; 386 ACPI_STATUS rv; 387 int pwr_state, flag; 388 389 flag = *(int *)arg; 390 391 if (flag) 392 pwr_state = ACPI_STATE_D0; 393 else 394 pwr_state = ACPI_STATE_D3; 395 396 rv = acpi_eval_reference_handle(obj, &cooler); 397 if (ACPI_FAILURE(rv)) { 398 aprint_error("%s: failed to get handle\n", __func__); 399 return rv; 400 } 401 402 rv = acpi_pwr_switch_consumer(cooler, pwr_state); 403 if (rv != AE_BAD_PARAMETER && ACPI_FAILURE(rv)) 404 aprint_error("%s: failed to change state for %s: %s\n", 405 __func__, acpi_name(cooler), AcpiFormatException(rv)); 406 407 return AE_OK; 408 } 409 410 /* 411 * acpitz_power_zone: 412 * power on or off the i:th part of the zone zone 413 */ 414 static void 415 acpitz_power_zone(struct acpitz_softc *sc, int i, int on) 416 { 417 KASSERT(i >= 0 && i < ATZ_NLEVELS); 418 419 acpi_foreach_package_object(sc->sc_zone.al[i].Pointer, 420 acpitz_switch_cooler, &on); 421 } 422 423 424 /* 425 * acpitz_power_off: 426 * power off parts of the zone 427 */ 428 static void 429 acpitz_power_off(struct acpitz_softc *sc) 430 { 431 int i; 432 433 for (i = 0 ; i < ATZ_NLEVELS; i++) { 434 if (sc->sc_zone.al[i].Pointer == NULL) 435 continue; 436 acpitz_power_zone(sc, i, 0); 437 } 438 sc->sc_active = ATZ_ACTIVE_NONE; 439 sc->sc_flags &= ~(ATZ_F_CRITICAL|ATZ_F_HOT|ATZ_F_PASSIVE); 440 } 441 442 static void 443 acpitz_get_zone(void *opaque, int verbose) 444 { 445 device_t dv = opaque; 446 struct acpitz_softc *sc = device_private(dv); 447 ACPI_STATUS rv; 448 char buf[8]; 449 int i, valid_levels; 450 451 if (!sc->sc_first) { 452 acpitz_power_off(sc); 453 454 for (i = 0; i < ATZ_NLEVELS; i++) { 455 if (sc->sc_zone.al[i].Pointer != NULL) 456 ACPI_FREE(sc->sc_zone.al[i].Pointer); 457 sc->sc_zone.al[i].Pointer = NULL; 458 } 459 } else 460 aprint_normal(":"); 461 462 valid_levels = 0; 463 464 for (i = 0; i < ATZ_NLEVELS; i++) { 465 ACPI_OBJECT *obj; 466 467 snprintf(buf, sizeof(buf), "_AC%d", i); 468 if (acpitz_get_integer(dv, buf, &sc->sc_zone.ac[i])) 469 continue; 470 471 snprintf(buf, sizeof(buf), "_AL%d", i); 472 rv = acpi_eval_struct(sc->sc_devnode->ad_handle, buf, 473 &sc->sc_zone.al[i]); 474 if (ACPI_FAILURE(rv)) { 475 sc->sc_zone.al[i].Pointer = NULL; 476 continue; 477 } 478 479 obj = sc->sc_zone.al[i].Pointer; 480 if (obj != NULL) { 481 if (obj->Type != ACPI_TYPE_PACKAGE) { 482 aprint_error("%d not package\n", i); 483 ACPI_FREE(obj); 484 sc->sc_zone.al[i].Pointer = NULL; 485 continue; 486 } 487 } 488 489 if (sc->sc_first) 490 aprint_normal(" active cooling level %d: %sC", i, 491 acpitz_celcius_string(sc->sc_zone.ac[i])); 492 493 valid_levels++; 494 } 495 496 acpitz_get_integer(dv, "_TMP", &sc->sc_zone.tmp); 497 acpitz_get_integer(dv, "_CRT", &sc->sc_zone.crt); 498 acpitz_get_integer(dv, "_HOT", &sc->sc_zone.hot); 499 acpitz_get_integer(dv, "_PSV", &sc->sc_zone.psv); 500 acpitz_get_integer(dv, "_TC1", &sc->sc_zone.tc1); 501 acpitz_get_integer(dv, "_TC2", &sc->sc_zone.tc2); 502 503 #if 0 504 sc->sc_zone.psl.Length = ACPI_ALLOCATE_LOCAL_BUFFER; 505 sc->sc_zone.psl.Pointer = NULL; 506 AcpiEvaluateObject(sc->sc_devnode->ad_handle, 507 "_PSL", NULL, &sc->sc_zone.psl); 508 #endif 509 510 /* ACPI spec: If _RTV is not present or present and zero, 511 * values are absolute. */ 512 acpitz_get_integer(dv, "_RTV", &sc->sc_zone.rtv); 513 if (sc->sc_zone.rtv == ATZ_TMP_INVALID) 514 sc->sc_zone.rtv = 0; 515 516 517 acpitz_sane_temp(&sc->sc_zone.tmp); 518 acpitz_sane_temp(&sc->sc_zone.crt); 519 acpitz_sane_temp(&sc->sc_zone.hot); 520 acpitz_sane_temp(&sc->sc_zone.psv); 521 522 if (verbose) { 523 if (sc->sc_zone.crt != ATZ_TMP_INVALID) 524 aprint_normal(" critical %sC", 525 acpitz_celcius_string(sc->sc_zone.crt)); 526 if (sc->sc_zone.hot != ATZ_TMP_INVALID) 527 aprint_normal(" hot %sC", 528 acpitz_celcius_string(sc->sc_zone.hot)); 529 if (sc->sc_zone.psv != ATZ_TMP_INVALID) 530 aprint_normal(" passive %sC", 531 acpitz_celcius_string(sc->sc_zone.psv)); 532 } 533 534 if (valid_levels == 0) { 535 sc->sc_flags |= ATZ_F_PASSIVEONLY; 536 if (sc->sc_first) 537 aprint_normal(", passive cooling"); 538 } 539 if (verbose) 540 aprint_normal("\n"); 541 542 for (i = 0; i < ATZ_NLEVELS; i++) 543 acpitz_sane_temp(&sc->sc_zone.ac[i]); 544 545 acpitz_power_off(sc); 546 sc->sc_first = 0; 547 } 548 549 550 static void 551 acpitz_notify_handler(ACPI_HANDLE hdl, UINT32 notify, void *opaque) 552 { 553 device_t dv = opaque; 554 ACPI_OSD_EXEC_CALLBACK func = NULL; 555 const char *name; 556 ACPI_STATUS rv; 557 558 switch (notify) { 559 case ACPI_NOTIFY_ThermalZoneStatusChanged: 560 func = acpitz_get_status; 561 name = "status check"; 562 break; 563 case ACPI_NOTIFY_ThermalZoneTripPointsChanged: 564 case ACPI_NOTIFY_DeviceListsChanged: 565 func = acpitz_get_zone_quiet; 566 name = "get zone"; 567 break; 568 default: 569 aprint_debug_dev(dv, 570 "received unhandled notify message 0x%x\n", notify); 571 return; 572 } 573 574 KASSERT(func != NULL); 575 576 rv = AcpiOsExecute(OSL_NOTIFY_HANDLER, func, dv); 577 if (ACPI_FAILURE(rv)) 578 aprint_debug_dev(dv, "unable to queue %s\n", name); 579 } 580 581 static void 582 acpitz_sane_temp(UINT32 *tmp) 583 { 584 /* Sane temperatures are beteen 0 and 150 C */ 585 if (*tmp < ATZ_ZEROC || *tmp > ATZ_ZEROC + 1500) 586 *tmp = ATZ_TMP_INVALID; 587 } 588 589 static int 590 acpitz_get_integer(device_t dv, const char *cm, UINT32 *val) 591 { 592 struct acpitz_softc *sc = device_private(dv); 593 ACPI_STATUS rv; 594 ACPI_INTEGER tmp; 595 596 rv = acpi_eval_integer(sc->sc_devnode->ad_handle, cm, &tmp); 597 if (ACPI_FAILURE(rv)) { 598 #ifdef ACPI_DEBUG 599 aprint_debug_dev(dv, "failed to evaluate %s: %s\n", 600 cm, AcpiFormatException(rv)); 601 #endif 602 *val = ATZ_TMP_INVALID; 603 return 1; 604 } 605 606 *val = tmp; 607 608 return 0; 609 } 610 611 static int 612 acpitz_get_fanspeed(device_t dv, 613 UINT32 *fanmin, UINT32 *fanmax, UINT32 *fancurrent) 614 { 615 struct acpitz_softc *sc = device_private(dv); 616 ACPI_STATUS rv; 617 ACPI_HANDLE handle; 618 ACPI_INTEGER fmin, fmax, fcurr; 619 int rc = 0; 620 621 handle = sc->sc_devnode->ad_handle; 622 rv = acpi_eval_integer(handle, "FMIN", &fmin); 623 if (ACPI_FAILURE(rv)) { 624 fmin = ATZ_TMP_INVALID; 625 rc = 1; 626 } 627 rv = acpi_eval_integer(handle, "FMAX", &fmax); 628 if (ACPI_FAILURE(rv)) { 629 fmax = ATZ_TMP_INVALID; 630 rc = 1; 631 } 632 rv = acpi_eval_integer(handle, "FRSP", &fcurr); 633 if (ACPI_FAILURE(rv)) { 634 fcurr = ATZ_TMP_INVALID; 635 rc = 1; 636 } 637 638 if (fanmin) 639 *fanmin = fmin; 640 if (fanmax) 641 *fanmax = fmax; 642 if (fancurrent) 643 *fancurrent = fcurr; 644 return rc; 645 } 646 647 #ifdef notyet 648 static ACPI_STATUS 649 acpitz_set_fanspeed(device_t dv, UINT32 fanspeed) 650 { 651 struct acpitz_softc *sc = device_private(dv); 652 ACPI_STATUS rv; 653 ACPI_HANDLE handle; 654 handle = sc->sc_devnode->ad_handle; 655 656 rv = acpi_eval_set_integer(handle, "FSSP", fanspeed); 657 if (ACPI_FAILURE(rv)) 658 aprint_debug_dev(dv, "failed to set fanspeed to %u rpm: %s\n", 659 fanspeed, AcpiFormatException(rv)); 660 return rv; 661 } 662 #endif 663 664 static void 665 acpitz_tick(void *opaque) 666 { 667 device_t dv = opaque; 668 struct acpitz_softc *sc = device_private(dv); 669 670 AcpiOsExecute(OSL_NOTIFY_HANDLER, acpitz_get_status, dv); 671 672 callout_schedule(&sc->sc_callout, sc->sc_zone.tzp * hz / 10); 673 } 674 675 static void 676 acpitz_init_envsys(device_t dv) 677 { 678 struct acpitz_softc *sc = device_private(dv); 679 680 sc->sc_sme = sysmon_envsys_create(); 681 sc->sc_sme->sme_get_limits = acpitz_get_limits; 682 sc->sc_sme->sme_cookie = sc; 683 sc->sc_sme->sme_name = device_xname(dv); 684 sc->sc_sme->sme_flags = SME_DISABLE_REFRESH; 685 686 sc->sc_temp_sensor.monitor = true; 687 sc->sc_temp_sensor.flags = ENVSYS_FMONLIMITS | ENVSYS_FMONNOTSUPP; 688 sc->sc_temp_sensor.units = ENVSYS_STEMP; 689 strlcpy(sc->sc_temp_sensor.desc, 690 sc->sc_zone.name, sizeof(sc->sc_temp_sensor.desc)); 691 if (sysmon_envsys_sensor_attach(sc->sc_sme, &sc->sc_temp_sensor)) 692 goto out; 693 694 if (sc->sc_have_fan) { 695 sc->sc_fan_sensor.monitor = true; 696 sc->sc_fan_sensor.flags = 697 ENVSYS_FMONLIMITS | ENVSYS_FMONNOTSUPP; 698 sc->sc_fan_sensor.units = ENVSYS_SFANRPM; 699 strlcpy(sc->sc_fan_sensor.desc, 700 "FAN", sizeof(sc->sc_fan_sensor.desc)); 701 if (sysmon_envsys_sensor_attach(sc->sc_sme, &sc->sc_fan_sensor)) 702 /* ignore error because fan sensor is optional */ 703 aprint_error_dev(dv, "unable to attach fan sensor\n"); 704 } 705 706 /* hook into sysmon */ 707 if (sysmon_envsys_register(sc->sc_sme) == 0) 708 return; 709 710 out: 711 aprint_error_dev(dv, "unable to register with sysmon\n"); 712 sysmon_envsys_destroy(sc->sc_sme); 713 } 714 715 static void 716 acpitz_get_limits(struct sysmon_envsys *sme, envsys_data_t *edata, 717 sysmon_envsys_lim_t *limits, uint32_t *props) 718 { 719 struct acpitz_softc *sc = sme->sme_cookie; 720 int i; 721 722 switch (edata->units) { 723 case ENVSYS_STEMP: 724 *props = 0; 725 if (sc->sc_zone.hot != ATZ_TMP_INVALID) { 726 *props |= PROP_CRITMAX; 727 limits->sel_critmax = ATZ2UKELVIN(sc->sc_zone.hot); 728 } else if (sc->sc_zone.crt != ATZ_TMP_INVALID) { 729 *props |= PROP_CRITMAX; 730 limits->sel_critmax = ATZ2UKELVIN(sc->sc_zone.crt); 731 } 732 for (i = 0; i < ATZ_NLEVELS; i++) { 733 if (sc->sc_zone.ac[i] != ATZ_TMP_INVALID) { 734 limits->sel_warnmax = 735 ATZ2UKELVIN(sc->sc_zone.ac[i]); 736 *props |= PROP_WARNMAX; 737 break; 738 } 739 } 740 break; 741 742 case ENVSYS_SFANRPM: 743 *props = 0; 744 if (sc->sc_zone.fanmin != ATZ_TMP_INVALID) { 745 *props |= PROP_WARNMIN; 746 limits->sel_warnmin = sc->sc_zone.fanmin; 747 sc->sc_fan_sensor.flags |= ENVSYS_FVALID_MIN; 748 } 749 if (sc->sc_zone.fanmax != ATZ_TMP_INVALID) { 750 *props |= PROP_WARNMAX; 751 limits->sel_warnmax = sc->sc_zone.fanmax; 752 sc->sc_fan_sensor.flags |= ENVSYS_FVALID_MAX; 753 } 754 break; 755 } 756 } 757
Indexes created Mon Sep 29 21:09:56 GMT 2025