acpi.c revision 1.101.16.5
1 /* $NetBSD: acpi.c,v 1.101.16.5 2007/08/09 02:37:07 jmcneill Exp $ */ 2 3 /*- 4 * Copyright (c) 2003, 2007 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum of By Noon Software, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Copyright 2001, 2003 Wasabi Systems, Inc. 41 * All rights reserved. 42 * 43 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 44 * 45 * Redistribution and use in source and binary forms, with or without 46 * modification, are permitted provided that the following conditions 47 * are met: 48 * 1. Redistributions of source code must retain the above copyright 49 * notice, this list of conditions and the following disclaimer. 50 * 2. Redistributions in binary form must reproduce the above copyright 51 * notice, this list of conditions and the following disclaimer in the 52 * documentation and/or other materials provided with the distribution. 53 * 3. All advertising materials mentioning features or use of this software 54 * must display the following acknowledgement: 55 * This product includes software developed for the NetBSD Project by 56 * Wasabi Systems, Inc. 57 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 58 * or promote products derived from this software without specific prior 59 * written permission. 60 * 61 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 62 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 63 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 64 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 65 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 66 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 67 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 68 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 69 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 70 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 71 * POSSIBILITY OF SUCH DAMAGE. 72 */ 73 74 /* 75 * Autoconfiguration support for the Intel ACPI Component Architecture 76 * ACPI reference implementation. 77 */ 78 79 #include <sys/cdefs.h> 80 __KERNEL_RCSID(0, "$NetBSD: acpi.c,v 1.101.16.5 2007/08/09 02:37:07 jmcneill Exp $"); 81 82 #include "opt_acpi.h" 83 #include "opt_pcifixup.h" 84 85 #include <sys/param.h> 86 #include <sys/systm.h> 87 #include <sys/device.h> 88 #include <sys/malloc.h> 89 #include <sys/mutex.h> 90 #include <sys/kernel.h> 91 #include <sys/proc.h> 92 #include <sys/sysctl.h> 93 94 #include <dev/acpi/acpica.h> 95 #include <dev/acpi/acpireg.h> 96 #include <dev/acpi/acpivar.h> 97 #include <dev/acpi/acpi_osd.h> 98 #include <dev/acpi/acpi_timer.h> 99 #ifdef ACPIVERBOSE 100 #include <dev/acpi/acpidevs_data.h> 101 #endif 102 103 #if defined(ACPI_PCI_FIXUP) 104 #error The option ACPI_PCI_FIXUP has been obsoleted by PCI_INTR_FIXUP_DISABLED. Please adjust your kernel configuration file. 105 #endif 106 107 #ifdef PCI_INTR_FIXUP_DISABLED 108 #include <dev/pci/pcidevs.h> 109 #endif 110 111 MALLOC_DECLARE(M_ACPI); 112 113 #include <machine/acpi_machdep.h> 114 115 #ifdef ACPI_DEBUGGER 116 #define ACPI_DBGR_INIT 0x01 117 #define ACPI_DBGR_TABLES 0x02 118 #define ACPI_DBGR_ENABLE 0x04 119 #define ACPI_DBGR_PROBE 0x08 120 #define ACPI_DBGR_RUNNING 0x10 121 122 static int acpi_dbgr = 0x00; 123 #endif 124 125 static int acpi_match(struct device *, struct cfdata *, void *); 126 static void acpi_attach(struct device *, struct device *, void *); 127 128 static int acpi_print(void *aux, const char *); 129 130 static int sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS); 131 132 extern struct cfdriver acpi_cd; 133 134 CFATTACH_DECL(acpi, sizeof(struct acpi_softc), 135 acpi_match, acpi_attach, NULL, NULL); 136 137 /* 138 * This is a flag we set when the ACPI subsystem is active. Machine 139 * dependent code may wish to skip other steps (such as attaching 140 * subsystems that ACPI supercedes) when ACPI is active. 141 */ 142 int acpi_active; 143 int acpi_force_load; 144 145 /* 146 * Pointer to the ACPI subsystem's state. There can be only 147 * one ACPI instance. 148 */ 149 struct acpi_softc *acpi_softc; 150 151 /* 152 * Locking stuff. 153 */ 154 static kmutex_t acpi_slock; 155 static int acpi_locked; 156 extern kmutex_t acpi_interrupt_list_mtx; 157 158 /* 159 * sysctl-related information 160 */ 161 162 static int acpi_node = CTL_EOL; 163 static uint64_t acpi_root_pointer; /* found as hw.acpi.root */ 164 static int acpi_sleepstate = ACPI_STATE_S0; 165 166 /* 167 * Prototypes. 168 */ 169 static void acpi_shutdown(void *); 170 static void acpi_build_tree(struct acpi_softc *); 171 static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, UINT32, void *, void **); 172 173 static void acpi_enable_fixed_events(struct acpi_softc *); 174 175 /* 176 * acpi_probe: 177 * 178 * Probe for ACPI support. This is called by the 179 * machine-dependent ACPI front-end. All of the 180 * actual work is done by ACPICA. 181 * 182 * NOTE: This is not an autoconfiguration interface function. 183 */ 184 int 185 acpi_probe(void) 186 { 187 static int beenhere; 188 ACPI_STATUS rv; 189 190 if (beenhere != 0) 191 panic("acpi_probe: ACPI has already been probed"); 192 beenhere = 1; 193 194 mutex_init(&acpi_slock, MUTEX_DRIVER, IPL_NONE); 195 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DRIVER, IPL_NONE); 196 acpi_locked = 0; 197 198 /* 199 * Start up ACPICA. 200 */ 201 #ifdef ACPI_DEBUGGER 202 if (acpi_dbgr & ACPI_DBGR_INIT) 203 acpi_osd_debugger(); 204 #endif 205 206 rv = AcpiInitializeSubsystem(); 207 if (ACPI_FAILURE(rv)) { 208 printf("ACPI: unable to initialize ACPICA: %s\n", 209 AcpiFormatException(rv)); 210 return 0; 211 } 212 213 #ifdef ACPI_DEBUGGER 214 if (acpi_dbgr & ACPI_DBGR_TABLES) 215 acpi_osd_debugger(); 216 #endif 217 218 rv = AcpiLoadTables(); 219 if (ACPI_FAILURE(rv)) { 220 printf("ACPI: unable to load tables: %s\n", 221 AcpiFormatException(rv)); 222 return 0; 223 } 224 225 226 if (!acpi_force_load && (acpi_find_quirks() & ACPI_QUIRK_BROKEN)) { 227 printf("ACPI: BIOS implementation in listed as broken:\n"); 228 printf("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 229 "AslId <%4.4s,%08x>\n", 230 AcpiGbl_XSDT->OemId, AcpiGbl_XSDT->OemTableId, 231 AcpiGbl_XSDT->OemRevision, 232 AcpiGbl_XSDT->AslCompilerId, 233 AcpiGbl_XSDT->AslCompilerRevision); 234 printf("ACPI: not used. set acpi_force_load to use anyway.\n"); 235 return 0; 236 } 237 238 /* 239 * Looks like we have ACPI! 240 */ 241 242 return 1; 243 } 244 245 static int 246 acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 247 { 248 struct cfattach *ca; 249 250 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 251 return (ca == &acpi_ca); 252 } 253 254 int 255 acpi_check(device_t parent, const char *ifattr) 256 { 257 return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); 258 } 259 260 ACPI_STATUS 261 acpi_OsGetRootPointer(UINT32 Flags, ACPI_POINTER *PhysicalAddress) 262 { 263 ACPI_STATUS rv; 264 265 /* 266 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 267 * 268 * IA-64: Use the EFI. 269 * 270 * We let MD code handle this since there are multiple 271 * ways to do it. 272 */ 273 274 rv = acpi_md_OsGetRootPointer(Flags, PhysicalAddress); 275 276 if (acpi_root_pointer == 0 && ACPI_SUCCESS(rv)) 277 acpi_root_pointer = 278 (uint64_t)PhysicalAddress->Pointer.Physical; 279 280 return rv; 281 } 282 283 /* 284 * acpi_match: 285 * 286 * Autoconfiguration `match' routine. 287 */ 288 static int 289 acpi_match(struct device *parent, struct cfdata *match, 290 void *aux) 291 { 292 /* 293 * XXX Check other locators? Hard to know -- machine 294 * dependent code has already checked for the presence 295 * of ACPI by calling acpi_probe(), so I suppose we 296 * don't really have to do anything else. 297 */ 298 return 1; 299 } 300 301 /* 302 * acpi_attach: 303 * 304 * Autoconfiguration `attach' routine. Finish initializing 305 * ACPICA (some initialization was done in acpi_probe(), 306 * which was required to check for the presence of ACPI), 307 * and enable the ACPI subsystem. 308 */ 309 static void 310 acpi_attach(struct device *parent, struct device *self, void *aux) 311 { 312 struct acpi_softc *sc = (void *) self; 313 struct acpibus_attach_args *aa = aux; 314 ACPI_STATUS rv; 315 316 aprint_naive(": Advanced Configuration and Power Interface\n"); 317 aprint_normal(": Advanced Configuration and Power Interface\n"); 318 319 if (acpi_softc != NULL) 320 panic("acpi_attach: ACPI has already been attached"); 321 322 sysmon_power_settype("acpi"); 323 324 aprint_verbose("%s: using Intel ACPI CA subsystem version %08x\n", 325 sc->sc_dev.dv_xname, ACPI_CA_VERSION); 326 327 aprint_verbose("%s: X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 328 sc->sc_dev.dv_xname, 329 AcpiGbl_XSDT->OemId, AcpiGbl_XSDT->OemTableId, 330 AcpiGbl_XSDT->OemRevision, 331 AcpiGbl_XSDT->AslCompilerId, AcpiGbl_XSDT->AslCompilerRevision); 332 333 sc->sc_quirks = acpi_find_quirks(); 334 335 sc->sc_iot = aa->aa_iot; 336 sc->sc_memt = aa->aa_memt; 337 sc->sc_pc = aa->aa_pc; 338 sc->sc_pciflags = aa->aa_pciflags; 339 sc->sc_ic = aa->aa_ic; 340 341 acpi_softc = sc; 342 343 /* 344 * Register null power management handler 345 */ 346 (void)pnp_register(self, pnp_generic_power); 347 348 /* 349 * Bring ACPI on-line. 350 */ 351 #ifdef ACPI_DEBUGGER 352 if (acpi_dbgr & ACPI_DBGR_ENABLE) 353 acpi_osd_debugger(); 354 #endif 355 356 rv = AcpiEnableSubsystem(0); 357 if (ACPI_FAILURE(rv)) { 358 aprint_error("%s: unable to enable ACPI: %s\n", 359 sc->sc_dev.dv_xname, AcpiFormatException(rv)); 360 return; 361 } 362 363 /* early EC handler initialization if ECDT table is available */ 364 #if NACPIEC > 0 365 acpiec_early_attach(&sc->sc_dev); 366 #endif 367 368 rv = AcpiInitializeObjects(0); 369 if (ACPI_FAILURE(rv)) { 370 aprint_error("%s: unable to initialize ACPI objects: %s\n", 371 sc->sc_dev.dv_xname, AcpiFormatException(rv)); 372 return; 373 } 374 acpi_active = 1; 375 376 /* Our current state is "awake". */ 377 sc->sc_sleepstate = ACPI_STATE_S0; 378 379 /* Show SCI interrupt. */ 380 if (AcpiGbl_FADT != NULL) 381 aprint_verbose("%s: SCI interrupting at int %d\n", 382 sc->sc_dev.dv_xname, AcpiGbl_FADT->SciInt); 383 /* 384 * Check for fixed-hardware features. 385 */ 386 acpi_enable_fixed_events(sc); 387 acpitimer_init(); 388 389 /* 390 * Scan the namespace and build our device tree. 391 */ 392 #ifdef ACPI_DEBUGGER 393 if (acpi_dbgr & ACPI_DBGR_PROBE) 394 acpi_osd_debugger(); 395 #endif 396 acpi_md_callback((struct device *)sc); 397 acpi_build_tree(sc); 398 399 if (acpi_root_pointer != 0 && acpi_node != CTL_EOL) { 400 (void)sysctl_createv(NULL, 0, NULL, NULL, 401 CTLFLAG_IMMEDIATE, 402 CTLTYPE_QUAD, "root", NULL, NULL, 403 acpi_root_pointer, NULL, 0, 404 CTL_HW, acpi_node, CTL_CREATE, CTL_EOL); 405 } 406 407 408 /* 409 * Register a shutdown hook that disables certain ACPI 410 * events that might happen and confuse us while we're 411 * trying to shut down. 412 */ 413 sc->sc_sdhook = shutdownhook_establish(acpi_shutdown, sc); 414 if (sc->sc_sdhook == NULL) 415 aprint_error("%s: WARNING: unable to register shutdown hook\n", 416 sc->sc_dev.dv_xname); 417 418 #ifdef ACPI_DEBUGGER 419 if (acpi_dbgr & ACPI_DBGR_RUNNING) 420 acpi_osd_debugger(); 421 #endif 422 } 423 424 /* 425 * acpi_shutdown: 426 * 427 * Shutdown hook for ACPI -- disable some events that 428 * might confuse us. 429 */ 430 static void 431 acpi_shutdown(void *arg) 432 { 433 /* nothing */ 434 } 435 436 #if 0 437 /* 438 * acpi_disable: 439 * 440 * Disable ACPI. 441 */ 442 static ACPI_STATUS 443 acpi_disable(struct acpi_softc *sc) 444 { 445 ACPI_STATUS rv = AE_OK; 446 447 if (acpi_active) { 448 rv = AcpiDisable(); 449 if (ACPI_SUCCESS(rv)) 450 acpi_active = 0; 451 } 452 return rv; 453 } 454 #endif 455 456 struct acpi_make_devnode_state { 457 struct acpi_softc *softc; 458 struct acpi_scope *scope; 459 }; 460 461 /* 462 * acpi_build_tree: 463 * 464 * Scan relevant portions of the ACPI namespace and attach 465 * child devices. 466 */ 467 static void 468 acpi_build_tree(struct acpi_softc *sc) 469 { 470 static const char *scopes[] = { 471 "\\_PR_", /* ACPI 1.0 processor namespace */ 472 "\\_SB_", /* system bus namespace */ 473 "\\_SI_", /* system indicator namespace */ 474 "\\_TZ_", /* ACPI 1.0 thermal zone namespace */ 475 NULL, 476 }; 477 struct acpi_attach_args aa; 478 struct acpi_make_devnode_state state; 479 struct acpi_scope *as; 480 struct acpi_devnode *ad; 481 ACPI_HANDLE parent; 482 ACPI_STATUS rv; 483 int i; 484 485 TAILQ_INIT(&sc->sc_scopes); 486 487 state.softc = sc; 488 489 /* 490 * Scan the namespace and build our tree. 491 */ 492 for (i = 0; scopes[i] != NULL; i++) { 493 as = malloc(sizeof(*as), M_ACPI, M_WAITOK); 494 as->as_name = scopes[i]; 495 TAILQ_INIT(&as->as_devnodes); 496 497 TAILQ_INSERT_TAIL(&sc->sc_scopes, as, as_list); 498 499 state.scope = as; 500 501 rv = AcpiGetHandle(ACPI_ROOT_OBJECT, scopes[i], 502 &parent); 503 if (ACPI_SUCCESS(rv)) { 504 AcpiWalkNamespace(ACPI_TYPE_ANY, parent, 100, 505 acpi_make_devnode, &state, NULL); 506 } 507 508 /* Now, for this namespace, try and attach the devices. */ 509 TAILQ_FOREACH(ad, &as->as_devnodes, ad_list) { 510 aa.aa_node = ad; 511 aa.aa_iot = sc->sc_iot; 512 aa.aa_memt = sc->sc_memt; 513 aa.aa_pc = sc->sc_pc; 514 aa.aa_pciflags = sc->sc_pciflags; 515 aa.aa_ic = sc->sc_ic; 516 517 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) { 518 /* 519 * XXX We only attach devices which are: 520 * 521 * - present 522 * - enabled 523 * - functioning properly 524 * 525 * However, if enabled, it's decoding resources, 526 * so we should claim them, if possible. 527 * Requires changes to bus_space(9). 528 */ 529 if ((ad->ad_devinfo->Valid & ACPI_VALID_STA) == 530 ACPI_VALID_STA && 531 (ad->ad_devinfo->CurrentStatus & 532 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED| 533 ACPI_STA_DEV_OK)) != 534 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED| 535 ACPI_STA_DEV_OK)) 536 continue; 537 538 /* 539 * XXX Same problem as above... 540 */ 541 if ((ad->ad_devinfo->Valid & ACPI_VALID_HID) 542 == 0) 543 continue; 544 } 545 546 ad->ad_device = config_found_ia(&sc->sc_dev, 547 "acpinodebus", &aa, acpi_print); 548 } 549 } 550 config_found_ia(&sc->sc_dev, "acpiapmbus", NULL, NULL); 551 } 552 553 #ifdef ACPI_ACTIVATE_DEV 554 static void 555 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 556 { 557 ACPI_STATUS rv; 558 ACPI_BUFFER buf; 559 560 buf.Pointer = NULL; 561 buf.Length = ACPI_ALLOCATE_BUFFER; 562 563 #ifdef ACPI_DEBUG 564 aprint_normal("acpi_activate_device: %s, old status=%x\n", 565 (*di)->HardwareId.Value, (*di)->CurrentStatus); 566 #endif 567 568 rv = acpi_allocate_resources(handle); 569 if (ACPI_FAILURE(rv)) { 570 aprint_error("acpi: activate failed for %s\n", 571 (*di)->HardwareId.Value); 572 } else { 573 aprint_verbose("acpi: activated %s\n", 574 (*di)->HardwareId.Value); 575 } 576 577 (void)AcpiGetObjectInfo(handle, &buf); 578 AcpiOsFree(*di); 579 *di = buf.Pointer; 580 581 #ifdef ACPI_DEBUG 582 aprint_normal("acpi_activate_device: %s, new status=%x\n", 583 (*di)->HardwareId.Value, (*di)->CurrentStatus); 584 #endif 585 } 586 #endif /* ACPI_ACTIVATE_DEV */ 587 588 /* 589 * acpi_make_devnode: 590 * 591 * Make an ACPI devnode. 592 */ 593 static ACPI_STATUS 594 acpi_make_devnode(ACPI_HANDLE handle, UINT32 level, void *context, 595 void **status) 596 { 597 struct acpi_make_devnode_state *state = context; 598 #if defined(ACPI_DEBUG) || defined(ACPI_EXTRA_DEBUG) 599 struct acpi_softc *sc = state->softc; 600 #endif 601 struct acpi_scope *as = state->scope; 602 struct acpi_devnode *ad; 603 ACPI_OBJECT_TYPE type; 604 ACPI_BUFFER buf; 605 ACPI_DEVICE_INFO *devinfo; 606 ACPI_STATUS rv; 607 ACPI_NAME_UNION *anu; 608 int i, clear = 0; 609 610 rv = AcpiGetType(handle, &type); 611 if (ACPI_SUCCESS(rv)) { 612 buf.Pointer = NULL; 613 buf.Length = ACPI_ALLOCATE_BUFFER; 614 rv = AcpiGetObjectInfo(handle, &buf); 615 if (ACPI_FAILURE(rv)) { 616 #ifdef ACPI_DEBUG 617 aprint_normal("%s: AcpiGetObjectInfo failed: %s\n", 618 sc->sc_dev.dv_xname, AcpiFormatException(rv)); 619 #endif 620 goto out; /* XXX why return OK */ 621 } 622 623 devinfo = buf.Pointer; 624 625 switch (type) { 626 case ACPI_TYPE_DEVICE: 627 #ifdef ACPI_ACTIVATE_DEV 628 if ((devinfo->Valid & (ACPI_VALID_STA|ACPI_VALID_HID)) == 629 (ACPI_VALID_STA|ACPI_VALID_HID) && 630 (devinfo->CurrentStatus & 631 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED)) == 632 ACPI_STA_DEV_PRESENT) 633 acpi_activate_device(handle, &devinfo); 634 635 /* FALLTHROUGH */ 636 #endif 637 638 case ACPI_TYPE_PROCESSOR: 639 case ACPI_TYPE_THERMAL: 640 case ACPI_TYPE_POWER: 641 ad = malloc(sizeof(*ad), M_ACPI, M_NOWAIT|M_ZERO); 642 if (ad == NULL) 643 return AE_NO_MEMORY; 644 645 ad->ad_devinfo = devinfo; 646 ad->ad_handle = handle; 647 ad->ad_level = level; 648 ad->ad_scope = as; 649 ad->ad_type = type; 650 651 anu = (ACPI_NAME_UNION *)&devinfo->Name; 652 ad->ad_name[4] = '\0'; 653 for (i = 3, clear = 0; i >= 0; i--) { 654 if (!clear && anu->Ascii[i] == '_') 655 ad->ad_name[i] = '\0'; 656 else { 657 ad->ad_name[i] = anu->Ascii[i]; 658 clear = 1; 659 } 660 } 661 if (ad->ad_name[0] == '\0') 662 ad->ad_name[0] = '_'; 663 664 TAILQ_INSERT_TAIL(&as->as_devnodes, ad, ad_list); 665 666 if ((ad->ad_devinfo->Valid & ACPI_VALID_HID) == 0) 667 goto out; 668 669 #ifdef ACPI_EXTRA_DEBUG 670 aprint_normal("%s: HID %s found in scope %s level %d\n", 671 sc->sc_dev.dv_xname, 672 ad->ad_devinfo->HardwareId.Value, 673 as->as_name, ad->ad_level); 674 if (ad->ad_devinfo->Valid & ACPI_VALID_UID) 675 aprint_normal(" UID %s\n", 676 ad->ad_devinfo->UniqueId.Value); 677 if (ad->ad_devinfo->Valid & ACPI_VALID_ADR) 678 aprint_normal(" ADR 0x%016qx\n", 679 ad->ad_devinfo->Address); 680 if (ad->ad_devinfo->Valid & ACPI_VALID_STA) 681 aprint_normal(" STA 0x%08x\n", 682 ad->ad_devinfo->CurrentStatus); 683 #endif 684 } 685 } 686 out: 687 return AE_OK; 688 } 689 690 /* 691 * acpi_print: 692 * 693 * Autoconfiguration print routine for ACPI node bus. 694 */ 695 static int 696 acpi_print(void *aux, const char *pnp) 697 { 698 struct acpi_attach_args *aa = aux; 699 ACPI_STATUS rv; 700 701 if (pnp) { 702 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 703 char *pnpstr = 704 aa->aa_node->ad_devinfo->HardwareId.Value; 705 char *str; 706 707 aprint_normal("%s (%s) ", aa->aa_node->ad_name, 708 pnpstr); 709 rv = acpi_eval_string(aa->aa_node->ad_handle, 710 "_STR", &str); 711 if (ACPI_SUCCESS(rv)) { 712 aprint_normal("[%s] ", str); 713 AcpiOsFree(str); 714 } 715 #ifdef ACPIVERBOSE 716 else { 717 int i; 718 719 for (i = 0; i < sizeof(acpi_knowndevs) / 720 sizeof(acpi_knowndevs[0]); i++) { 721 if (strcmp(acpi_knowndevs[i].pnp, 722 pnpstr) == 0) { 723 aprint_normal("[%s] ", 724 acpi_knowndevs[i].str); 725 } 726 } 727 } 728 729 #endif 730 } else { 731 aprint_normal("%s (ACPI Object Type '%s' " 732 "[0x%02x]) ", aa->aa_node->ad_name, 733 AcpiUtGetTypeName(aa->aa_node->ad_devinfo->Type), 734 aa->aa_node->ad_devinfo->Type); 735 } 736 aprint_normal("at %s", pnp); 737 } else { 738 aprint_normal(" (%s", aa->aa_node->ad_name); 739 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 740 aprint_normal(", %s", aa->aa_node->ad_devinfo->HardwareId.Value); 741 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_UID) { 742 const char *uid; 743 744 uid = aa->aa_node->ad_devinfo->UniqueId.Value; 745 if (uid[0] == '\0') 746 uid = "<null>"; 747 aprint_normal("-%s", uid); 748 } 749 } 750 aprint_normal(")"); 751 } 752 753 return UNCONF; 754 } 755 756 /***************************************************************************** 757 * ACPI fixed-hardware feature handlers 758 *****************************************************************************/ 759 760 static UINT32 acpi_fixed_button_handler(void *); 761 static void acpi_fixed_button_pressed(void *); 762 763 /* 764 * acpi_enable_fixed_events: 765 * 766 * Enable any fixed-hardware feature handlers. 767 */ 768 static void 769 acpi_enable_fixed_events(struct acpi_softc *sc) 770 { 771 static int beenhere; 772 ACPI_STATUS rv; 773 774 KASSERT(beenhere == 0); 775 beenhere = 1; 776 777 /* 778 * Check for fixed-hardware buttons. 779 */ 780 781 if (AcpiGbl_FADT != NULL && AcpiGbl_FADT->PwrButton == 0) { 782 aprint_verbose("%s: fixed-feature power button present\n", 783 sc->sc_dev.dv_xname); 784 sc->sc_smpsw_power.smpsw_name = sc->sc_dev.dv_xname; 785 sc->sc_smpsw_power.smpsw_type = PSWITCH_TYPE_POWER; 786 if (sysmon_pswitch_register(&sc->sc_smpsw_power) != 0) { 787 aprint_error("%s: unable to register fixed power " 788 "button with sysmon\n", sc->sc_dev.dv_xname); 789 } else { 790 rv = AcpiInstallFixedEventHandler( 791 ACPI_EVENT_POWER_BUTTON, 792 acpi_fixed_button_handler, &sc->sc_smpsw_power); 793 if (ACPI_FAILURE(rv)) { 794 aprint_error("%s: unable to install handler " 795 "for fixed power button: %s\n", 796 sc->sc_dev.dv_xname, 797 AcpiFormatException(rv)); 798 } 799 } 800 } 801 802 if (AcpiGbl_FADT != NULL && AcpiGbl_FADT->SleepButton == 0) { 803 aprint_verbose("%s: fixed-feature sleep button present\n", 804 sc->sc_dev.dv_xname); 805 sc->sc_smpsw_sleep.smpsw_name = sc->sc_dev.dv_xname; 806 sc->sc_smpsw_sleep.smpsw_type = PSWITCH_TYPE_SLEEP; 807 if (sysmon_pswitch_register(&sc->sc_smpsw_power) != 0) { 808 aprint_error("%s: unable to register fixed sleep " 809 "button with sysmon\n", sc->sc_dev.dv_xname); 810 } else { 811 rv = AcpiInstallFixedEventHandler( 812 ACPI_EVENT_SLEEP_BUTTON, 813 acpi_fixed_button_handler, &sc->sc_smpsw_sleep); 814 if (ACPI_FAILURE(rv)) { 815 aprint_error("%s: unable to install handler " 816 "for fixed sleep button: %s\n", 817 sc->sc_dev.dv_xname, 818 AcpiFormatException(rv)); 819 } 820 } 821 } 822 } 823 824 /* 825 * acpi_fixed_button_handler: 826 * 827 * Event handler for the fixed buttons. 828 */ 829 static UINT32 830 acpi_fixed_button_handler(void *context) 831 { 832 struct sysmon_pswitch *smpsw = context; 833 int rv; 834 835 #ifdef ACPI_BUT_DEBUG 836 printf("%s: fixed button handler\n", smpsw->smpsw_name); 837 #endif 838 839 rv = AcpiOsQueueForExecution(OSD_PRIORITY_LO, 840 acpi_fixed_button_pressed, smpsw); 841 if (ACPI_FAILURE(rv)) 842 printf("%s: WARNING: unable to queue fixed button pressed " 843 "callback: %s\n", smpsw->smpsw_name, 844 AcpiFormatException(rv)); 845 846 return ACPI_INTERRUPT_HANDLED; 847 } 848 849 /* 850 * acpi_fixed_button_pressed: 851 * 852 * Deal with a fixed button being pressed. 853 */ 854 static void 855 acpi_fixed_button_pressed(void *context) 856 { 857 struct sysmon_pswitch *smpsw = context; 858 859 #ifdef ACPI_BUT_DEBUG 860 printf("%s: fixed button pressed, calling sysmon\n", 861 smpsw->smpsw_name); 862 #endif 863 864 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 865 } 866 867 /***************************************************************************** 868 * ACPI utility routines. 869 *****************************************************************************/ 870 871 /* 872 * acpi_eval_integer: 873 * 874 * Evaluate an integer object. 875 */ 876 ACPI_STATUS 877 acpi_eval_integer(ACPI_HANDLE handle, const char *path, ACPI_INTEGER *valp) 878 { 879 ACPI_STATUS rv; 880 ACPI_BUFFER buf; 881 ACPI_OBJECT param; 882 883 if (handle == NULL) 884 handle = ACPI_ROOT_OBJECT; 885 886 buf.Pointer = ¶m; 887 buf.Length = sizeof(param); 888 889 rv = AcpiEvaluateObjectTyped(handle, path, NULL, &buf, ACPI_TYPE_INTEGER); 890 if (ACPI_SUCCESS(rv)) 891 *valp = param.Integer.Value; 892 893 return rv; 894 } 895 896 /* 897 * acpi_eval_string: 898 * 899 * Evaluate a (Unicode) string object. 900 */ 901 ACPI_STATUS 902 acpi_eval_string(ACPI_HANDLE handle, const char *path, char **stringp) 903 { 904 ACPI_STATUS rv; 905 ACPI_BUFFER buf; 906 907 if (handle == NULL) 908 handle = ACPI_ROOT_OBJECT; 909 910 buf.Pointer = NULL; 911 buf.Length = ACPI_ALLOCATE_BUFFER; 912 913 rv = AcpiEvaluateObjectTyped(handle, path, NULL, &buf, ACPI_TYPE_STRING); 914 if (ACPI_SUCCESS(rv)) { 915 ACPI_OBJECT *param = buf.Pointer; 916 const char *ptr = param->String.Pointer; 917 size_t len = param->String.Length; 918 if ((*stringp = AcpiOsAllocate(len)) == NULL) 919 rv = AE_NO_MEMORY; 920 else 921 (void)memcpy(*stringp, ptr, len); 922 AcpiOsFree(param); 923 } 924 925 return rv; 926 } 927 928 929 /* 930 * acpi_eval_struct: 931 * 932 * Evaluate a more complex structure. 933 * Caller must free buf.Pointer by AcpiOsFree(). 934 */ 935 ACPI_STATUS 936 acpi_eval_struct(ACPI_HANDLE handle, const char *path, ACPI_BUFFER *bufp) 937 { 938 ACPI_STATUS rv; 939 940 if (handle == NULL) 941 handle = ACPI_ROOT_OBJECT; 942 943 bufp->Pointer = NULL; 944 bufp->Length = ACPI_ALLOCATE_BUFFER; 945 946 rv = AcpiEvaluateObject(handle, path, NULL, bufp); 947 948 return rv; 949 } 950 951 /* 952 * acpi_foreach_package_object: 953 * 954 * Iterate over all objects in a in a packages and pass then all 955 * to a function. If the called function returns non AE_OK, the 956 * iteration is stopped and that value is returned. 957 */ 958 959 ACPI_STATUS 960 acpi_foreach_package_object(ACPI_OBJECT *pkg, 961 ACPI_STATUS (*func)(ACPI_OBJECT *, void *), 962 void *arg) 963 { 964 ACPI_STATUS rv = AE_OK; 965 int i; 966 967 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE) 968 return AE_BAD_PARAMETER; 969 970 for (i = 0; i < pkg->Package.Count; i++) { 971 rv = (*func)(&pkg->Package.Elements[i], arg); 972 if (ACPI_FAILURE(rv)) 973 break; 974 } 975 976 return rv; 977 } 978 979 const char * 980 acpi_name(ACPI_HANDLE handle) 981 { 982 static char buffer[80]; 983 ACPI_BUFFER buf; 984 ACPI_STATUS rv; 985 986 buf.Length = sizeof(buffer); 987 buf.Pointer = buffer; 988 989 rv = AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf); 990 if (ACPI_FAILURE(rv)) 991 return "(unknown acpi path)"; 992 return buffer; 993 } 994 995 /* 996 * acpi_get: 997 * 998 * Fetch data info the specified (empty) ACPI buffer. 999 * Caller must free buf.Pointer by AcpiOsFree(). 1000 */ 1001 ACPI_STATUS 1002 acpi_get(ACPI_HANDLE handle, ACPI_BUFFER *buf, 1003 ACPI_STATUS (*getit)(ACPI_HANDLE, ACPI_BUFFER *)) 1004 { 1005 buf->Pointer = NULL; 1006 buf->Length = ACPI_ALLOCATE_BUFFER; 1007 1008 return (*getit)(handle, buf); 1009 } 1010 1011 1012 /* 1013 * acpi_match_hid 1014 * 1015 * Match given ids against _HID and _CIDs 1016 */ 1017 int 1018 acpi_match_hid(ACPI_DEVICE_INFO *ad, const char * const *ids) 1019 { 1020 int i; 1021 1022 while (*ids) { 1023 if (ad->Valid & ACPI_VALID_HID) { 1024 if (pmatch(ad->HardwareId.Value, *ids, NULL) == 2) 1025 return 1; 1026 } 1027 1028 if (ad->Valid & ACPI_VALID_CID) { 1029 for (i = 0; i < ad->CompatibilityId.Count; i++) { 1030 if (pmatch(ad->CompatibilityId.Id[i].Value, *ids, NULL) == 2) 1031 return 1; 1032 } 1033 } 1034 ids++; 1035 } 1036 1037 return 0; 1038 } 1039 1040 /* 1041 * acpi_set_wake_gpe 1042 * 1043 * Set GPE as both Runtime and Wake 1044 */ 1045 void 1046 acpi_set_wake_gpe(ACPI_HANDLE handle) 1047 { 1048 ACPI_BUFFER buf; 1049 ACPI_STATUS rv; 1050 ACPI_OBJECT *p, *elt; 1051 1052 rv = acpi_eval_struct(handle, METHOD_NAME__PRW, &buf); 1053 if (ACPI_FAILURE(rv)) 1054 return; /* just ignore */ 1055 1056 p = buf.Pointer; 1057 if (p->Type != ACPI_TYPE_PACKAGE || p->Package.Count < 2) 1058 goto out; /* just ignore */ 1059 1060 elt = p->Package.Elements; 1061 1062 /* TBD: package support */ 1063 AcpiSetGpeType(NULL, elt[0].Integer.Value, ACPI_GPE_TYPE_WAKE_RUN); 1064 AcpiEnableGpe(NULL, elt[0].Integer.Value, ACPI_NOT_ISR); 1065 1066 out: 1067 AcpiOsFree(buf.Pointer); 1068 } 1069 1070 1071 /***************************************************************************** 1072 * ACPI sleep support. 1073 *****************************************************************************/ 1074 1075 static int 1076 is_available_state(struct acpi_softc *sc, int state) 1077 { 1078 UINT8 type_a, type_b; 1079 1080 return ACPI_SUCCESS(AcpiGetSleepTypeData((UINT8)state, 1081 &type_a, &type_b)); 1082 } 1083 1084 /* 1085 * acpi_enter_sleep_state: 1086 * 1087 * enter to the specified sleep state. 1088 */ 1089 1090 ACPI_STATUS 1091 acpi_enter_sleep_state(struct acpi_softc *sc, int state) 1092 { 1093 int s, err; 1094 ACPI_STATUS ret = AE_OK; 1095 1096 if (state == acpi_sleepstate) 1097 return AE_OK; 1098 1099 aprint_normal("%s: entering state %d\n", sc->sc_dev.dv_xname, state); 1100 1101 switch (state) { 1102 case ACPI_STATE_S0: 1103 break; 1104 case ACPI_STATE_S1: 1105 case ACPI_STATE_S2: 1106 case ACPI_STATE_S3: 1107 case ACPI_STATE_S4: 1108 if (!is_available_state(sc, state)) { 1109 aprint_error("%s: cannot enter the sleep state (%d).\n", 1110 sc->sc_dev.dv_xname, state); 1111 break; 1112 } 1113 1114 ret = AcpiEnterSleepStatePrep(state); 1115 if (ACPI_FAILURE(ret)) { 1116 aprint_error("%s: failed preparing to sleep (%s)\n", 1117 sc->sc_dev.dv_xname, AcpiFormatException(ret)); 1118 break; 1119 } 1120 1121 DELAY(1000000); 1122 acpi_sleepstate = state; 1123 if (state == ACPI_STATE_S1) { 1124 /* just enter the state */ 1125 acpi_md_OsDisableInterrupt(); 1126 AcpiEnterSleepState((UINT8)state); 1127 } else { 1128 pnp_global_transition(PNP_STATE_D3); 1129 s = splhigh(); 1130 err = acpi_md_sleep(state); 1131 if (err == 0 && state == ACPI_STATE_S3) 1132 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON); 1133 splx(s); 1134 pnp_global_transition(PNP_STATE_D0); 1135 if (state == ACPI_STATE_S4) 1136 AcpiEnable(); 1137 } 1138 AcpiLeaveSleepState((UINT8)state); 1139 1140 break; 1141 case ACPI_STATE_S5: 1142 ret = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1143 if (ACPI_FAILURE(ret)) { 1144 aprint_error("%s: failed preparing to sleep (%s)\n", 1145 sc->sc_dev.dv_xname, AcpiFormatException(ret)); 1146 break; 1147 } 1148 DELAY(1000000); 1149 acpi_sleepstate = state; 1150 acpi_md_OsDisableInterrupt(); 1151 AcpiEnterSleepState(ACPI_STATE_S5); 1152 aprint_error("%s: WARNING powerdown failed!\n", 1153 sc->sc_dev.dv_xname); 1154 break; 1155 } 1156 1157 acpi_sleepstate = ACPI_STATE_S0; 1158 return ret; 1159 } 1160 1161 #if defined(ACPI_ACTIVATE_DEV) 1162 /* XXX This very incomplete */ 1163 ACPI_STATUS 1164 acpi_allocate_resources(ACPI_HANDLE handle) 1165 { 1166 ACPI_BUFFER bufp, bufc, bufn; 1167 ACPI_RESOURCE *resp, *resc, *resn; 1168 ACPI_RESOURCE_IRQ *irq; 1169 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 1170 ACPI_STATUS rv; 1171 uint delta; 1172 1173 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 1174 if (ACPI_FAILURE(rv)) 1175 goto out; 1176 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 1177 if (ACPI_FAILURE(rv)) { 1178 goto out1; 1179 } 1180 1181 bufn.Length = 1000; 1182 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 1183 resp = bufp.Pointer; 1184 resc = bufc.Pointer; 1185 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 1186 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1187 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 1188 resp = ACPI_NEXT_RESOURCE(resp); 1189 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 1190 break; 1191 /* Found identical Id */ 1192 resn->Type = resc->Type; 1193 switch (resc->Type) { 1194 case ACPI_RESOURCE_TYPE_IRQ: 1195 memcpy(&resn->Data, &resp->Data, 1196 sizeof(ACPI_RESOURCE_IRQ)); 1197 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 1198 irq->Interrupts[0] = 1199 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 1200 Interrupts[irq->InterruptCount-1]; 1201 irq->InterruptCount = 1; 1202 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 1203 break; 1204 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 1205 memcpy(&resn->Data, &resp->Data, 1206 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 1207 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 1208 #if 0 1209 /* 1210 * XXX not duplicating the interrupt logic above 1211 * because its not clear what it accomplishes. 1212 */ 1213 xirq->Interrupts[0] = 1214 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 1215 Interrupts[irq->NumberOfInterrupts-1]; 1216 xirq->NumberOfInterrupts = 1; 1217 #endif 1218 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 1219 break; 1220 case ACPI_RESOURCE_TYPE_IO: 1221 memcpy(&resn->Data, &resp->Data, 1222 sizeof(ACPI_RESOURCE_IO)); 1223 resn->Length = resp->Length; 1224 break; 1225 default: 1226 printf("acpi_allocate_resources: res=%d\n", resc->Type); 1227 rv = AE_BAD_DATA; 1228 goto out2; 1229 } 1230 resc = ACPI_NEXT_RESOURCE(resc); 1231 resn = ACPI_NEXT_RESOURCE(resn); 1232 resp = ACPI_NEXT_RESOURCE(resp); 1233 delta = (UINT8 *)resn - (UINT8 *)bufn.Pointer; 1234 if (delta >= 1235 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 1236 bufn.Length *= 2; 1237 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 1238 M_ACPI, M_WAITOK); 1239 resn = (ACPI_RESOURCE *)((UINT8 *)bufn.Pointer + delta); 1240 } 1241 } 1242 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1243 printf("acpi_allocate_resources: resc not exhausted\n"); 1244 rv = AE_BAD_DATA; 1245 goto out3; 1246 } 1247 1248 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 1249 rv = AcpiSetCurrentResources(handle, &bufn); 1250 if (ACPI_FAILURE(rv)) { 1251 printf("acpi_allocate_resources: AcpiSetCurrentResources %s\n", 1252 AcpiFormatException(rv)); 1253 } 1254 1255 out3: 1256 free(bufn.Pointer, M_ACPI); 1257 out2: 1258 AcpiOsFree(bufc.Pointer); 1259 out1: 1260 AcpiOsFree(bufp.Pointer); 1261 out: 1262 return rv; 1263 } 1264 #endif /* ACPI_ACTIVATE_DEV */ 1265 1266 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1267 { 1268 const struct sysctlnode *node; 1269 const struct sysctlnode *ssnode; 1270 1271 if (sysctl_createv(clog, 0, NULL, NULL, 1272 CTLFLAG_PERMANENT, 1273 CTLTYPE_NODE, "hw", NULL, 1274 NULL, 0, NULL, 0, 1275 CTL_HW, CTL_EOL) != 0) 1276 return; 1277 1278 if (sysctl_createv(clog, 0, NULL, &node, 1279 CTLFLAG_PERMANENT, 1280 CTLTYPE_NODE, "acpi", NULL, 1281 NULL, 0, NULL, 0, 1282 CTL_HW, CTL_CREATE, CTL_EOL) != 0) 1283 return; 1284 1285 acpi_node = node->sysctl_num; 1286 1287 /* ACPI sleepstate sysctl */ 1288 if (sysctl_createv(NULL, 0, NULL, &node, 1289 CTLFLAG_PERMANENT, 1290 CTLTYPE_NODE, "machdep", NULL, 1291 NULL, 0, NULL, 0, CTL_MACHDEP, CTL_EOL) != 0) 1292 return; 1293 if (sysctl_createv(NULL, 0, &node, &ssnode, 1294 CTLFLAG_READWRITE, CTLTYPE_INT, "sleep_state", 1295 NULL, sysctl_hw_acpi_sleepstate, 0, NULL, 0, CTL_CREATE, 1296 CTL_EOL) != 0) 1297 return; 1298 } 1299 1300 static int 1301 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1302 { 1303 int error, t; 1304 struct sysctlnode node; 1305 1306 node = *rnode; 1307 t = acpi_sleepstate; 1308 node.sysctl_data = &t; 1309 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1310 if (error || newp == NULL) 1311 return error; 1312 1313 if (acpi_softc == NULL) 1314 return ENOSYS; 1315 1316 acpi_enter_sleep_state(acpi_softc, t); 1317 1318 return 0; 1319 } 1320
Indexes created Wed Oct 01 19:09:53 GMT 2025