acpi.c revision 1.102
1 /* $NetBSD: acpi.c,v 1.102 2007/08/08 08:52:31 cube 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 1.102 2007/08/08 08:52:31 cube 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 * Bring ACPI on-line. 345 */ 346 #ifdef ACPI_DEBUGGER 347 if (acpi_dbgr & ACPI_DBGR_ENABLE) 348 acpi_osd_debugger(); 349 #endif 350 351 rv = AcpiEnableSubsystem(0); 352 if (ACPI_FAILURE(rv)) { 353 aprint_error("%s: unable to enable ACPI: %s\n", 354 sc->sc_dev.dv_xname, AcpiFormatException(rv)); 355 return; 356 } 357 358 /* early EC handler initialization if ECDT table is available */ 359 #if NACPIEC > 0 360 acpiec_early_attach(&sc->sc_dev); 361 #endif 362 363 rv = AcpiInitializeObjects(0); 364 if (ACPI_FAILURE(rv)) { 365 aprint_error("%s: unable to initialize ACPI objects: %s\n", 366 sc->sc_dev.dv_xname, AcpiFormatException(rv)); 367 return; 368 } 369 acpi_active = 1; 370 371 /* Our current state is "awake". */ 372 sc->sc_sleepstate = ACPI_STATE_S0; 373 374 /* Show SCI interrupt. */ 375 if (AcpiGbl_FADT != NULL) 376 aprint_verbose("%s: SCI interrupting at int %d\n", 377 sc->sc_dev.dv_xname, AcpiGbl_FADT->SciInt); 378 /* 379 * Check for fixed-hardware features. 380 */ 381 acpi_enable_fixed_events(sc); 382 acpitimer_init(); 383 384 /* 385 * Scan the namespace and build our device tree. 386 */ 387 #ifdef ACPI_DEBUGGER 388 if (acpi_dbgr & ACPI_DBGR_PROBE) 389 acpi_osd_debugger(); 390 #endif 391 acpi_md_callback((struct device *)sc); 392 acpi_build_tree(sc); 393 394 if (acpi_root_pointer != 0 && acpi_node != CTL_EOL) { 395 (void)sysctl_createv(NULL, 0, NULL, NULL, 396 CTLFLAG_IMMEDIATE, 397 CTLTYPE_QUAD, "root", NULL, NULL, 398 acpi_root_pointer, NULL, 0, 399 CTL_HW, acpi_node, CTL_CREATE, CTL_EOL); 400 } 401 402 403 /* 404 * Register a shutdown hook that disables certain ACPI 405 * events that might happen and confuse us while we're 406 * trying to shut down. 407 */ 408 sc->sc_sdhook = shutdownhook_establish(acpi_shutdown, sc); 409 if (sc->sc_sdhook == NULL) 410 aprint_error("%s: WARNING: unable to register shutdown hook\n", 411 sc->sc_dev.dv_xname); 412 413 #ifdef ACPI_DEBUGGER 414 if (acpi_dbgr & ACPI_DBGR_RUNNING) 415 acpi_osd_debugger(); 416 #endif 417 } 418 419 /* 420 * acpi_shutdown: 421 * 422 * Shutdown hook for ACPI -- disable some events that 423 * might confuse us. 424 */ 425 static void 426 acpi_shutdown(void *arg) 427 { 428 /* nothing */ 429 } 430 431 #if 0 432 /* 433 * acpi_disable: 434 * 435 * Disable ACPI. 436 */ 437 static ACPI_STATUS 438 acpi_disable(struct acpi_softc *sc) 439 { 440 ACPI_STATUS rv = AE_OK; 441 442 if (acpi_active) { 443 rv = AcpiDisable(); 444 if (ACPI_SUCCESS(rv)) 445 acpi_active = 0; 446 } 447 return rv; 448 } 449 #endif 450 451 struct acpi_make_devnode_state { 452 struct acpi_softc *softc; 453 struct acpi_scope *scope; 454 }; 455 456 /* 457 * acpi_build_tree: 458 * 459 * Scan relevant portions of the ACPI namespace and attach 460 * child devices. 461 */ 462 static void 463 acpi_build_tree(struct acpi_softc *sc) 464 { 465 static const char *scopes[] = { 466 "\\_PR_", /* ACPI 1.0 processor namespace */ 467 "\\_SB_", /* system bus namespace */ 468 "\\_SI_", /* system indicator namespace */ 469 "\\_TZ_", /* ACPI 1.0 thermal zone namespace */ 470 NULL, 471 }; 472 struct acpi_attach_args aa; 473 struct acpi_make_devnode_state state; 474 struct acpi_scope *as; 475 struct acpi_devnode *ad; 476 ACPI_HANDLE parent; 477 ACPI_STATUS rv; 478 int i; 479 480 TAILQ_INIT(&sc->sc_scopes); 481 482 state.softc = sc; 483 484 /* 485 * Scan the namespace and build our tree. 486 */ 487 for (i = 0; scopes[i] != NULL; i++) { 488 as = malloc(sizeof(*as), M_ACPI, M_WAITOK); 489 as->as_name = scopes[i]; 490 TAILQ_INIT(&as->as_devnodes); 491 492 TAILQ_INSERT_TAIL(&sc->sc_scopes, as, as_list); 493 494 state.scope = as; 495 496 rv = AcpiGetHandle(ACPI_ROOT_OBJECT, scopes[i], 497 &parent); 498 if (ACPI_SUCCESS(rv)) { 499 AcpiWalkNamespace(ACPI_TYPE_ANY, parent, 100, 500 acpi_make_devnode, &state, NULL); 501 } 502 503 /* Now, for this namespace, try and attach the devices. */ 504 TAILQ_FOREACH(ad, &as->as_devnodes, ad_list) { 505 aa.aa_node = ad; 506 aa.aa_iot = sc->sc_iot; 507 aa.aa_memt = sc->sc_memt; 508 aa.aa_pc = sc->sc_pc; 509 aa.aa_pciflags = sc->sc_pciflags; 510 aa.aa_ic = sc->sc_ic; 511 512 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) { 513 /* 514 * XXX We only attach devices which are: 515 * 516 * - present 517 * - enabled 518 * - functioning properly 519 * 520 * However, if enabled, it's decoding resources, 521 * so we should claim them, if possible. 522 * Requires changes to bus_space(9). 523 */ 524 if ((ad->ad_devinfo->Valid & ACPI_VALID_STA) == 525 ACPI_VALID_STA && 526 (ad->ad_devinfo->CurrentStatus & 527 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED| 528 ACPI_STA_DEV_OK)) != 529 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED| 530 ACPI_STA_DEV_OK)) 531 continue; 532 533 /* 534 * XXX Same problem as above... 535 */ 536 if ((ad->ad_devinfo->Valid & ACPI_VALID_HID) 537 == 0) 538 continue; 539 } 540 541 ad->ad_device = config_found_ia(&sc->sc_dev, 542 "acpinodebus", &aa, acpi_print); 543 } 544 } 545 config_found_ia(&sc->sc_dev, "acpiapmbus", NULL, NULL); 546 } 547 548 #ifdef ACPI_ACTIVATE_DEV 549 static void 550 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 551 { 552 ACPI_STATUS rv; 553 ACPI_BUFFER buf; 554 555 buf.Pointer = NULL; 556 buf.Length = ACPI_ALLOCATE_BUFFER; 557 558 #ifdef ACPI_DEBUG 559 aprint_normal("acpi_activate_device: %s, old status=%x\n", 560 (*di)->HardwareId.Value, (*di)->CurrentStatus); 561 #endif 562 563 rv = acpi_allocate_resources(handle); 564 if (ACPI_FAILURE(rv)) { 565 aprint_error("acpi: activate failed for %s\n", 566 (*di)->HardwareId.Value); 567 } else { 568 aprint_verbose("acpi: activated %s\n", 569 (*di)->HardwareId.Value); 570 } 571 572 (void)AcpiGetObjectInfo(handle, &buf); 573 AcpiOsFree(*di); 574 *di = buf.Pointer; 575 576 #ifdef ACPI_DEBUG 577 aprint_normal("acpi_activate_device: %s, new status=%x\n", 578 (*di)->HardwareId.Value, (*di)->CurrentStatus); 579 #endif 580 } 581 #endif /* ACPI_ACTIVATE_DEV */ 582 583 /* 584 * acpi_make_devnode: 585 * 586 * Make an ACPI devnode. 587 */ 588 static ACPI_STATUS 589 acpi_make_devnode(ACPI_HANDLE handle, UINT32 level, void *context, 590 void **status) 591 { 592 struct acpi_make_devnode_state *state = context; 593 #if defined(ACPI_DEBUG) || defined(ACPI_EXTRA_DEBUG) 594 struct acpi_softc *sc = state->softc; 595 #endif 596 struct acpi_scope *as = state->scope; 597 struct acpi_devnode *ad; 598 ACPI_OBJECT_TYPE type; 599 ACPI_BUFFER buf; 600 ACPI_DEVICE_INFO *devinfo; 601 ACPI_STATUS rv; 602 ACPI_NAME_UNION *anu; 603 int i, clear = 0; 604 605 rv = AcpiGetType(handle, &type); 606 if (ACPI_SUCCESS(rv)) { 607 buf.Pointer = NULL; 608 buf.Length = ACPI_ALLOCATE_BUFFER; 609 rv = AcpiGetObjectInfo(handle, &buf); 610 if (ACPI_FAILURE(rv)) { 611 #ifdef ACPI_DEBUG 612 aprint_normal("%s: AcpiGetObjectInfo failed: %s\n", 613 sc->sc_dev.dv_xname, AcpiFormatException(rv)); 614 #endif 615 goto out; /* XXX why return OK */ 616 } 617 618 devinfo = buf.Pointer; 619 620 switch (type) { 621 case ACPI_TYPE_DEVICE: 622 #ifdef ACPI_ACTIVATE_DEV 623 if ((devinfo->Valid & (ACPI_VALID_STA|ACPI_VALID_HID)) == 624 (ACPI_VALID_STA|ACPI_VALID_HID) && 625 (devinfo->CurrentStatus & 626 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED)) == 627 ACPI_STA_DEV_PRESENT) 628 acpi_activate_device(handle, &devinfo); 629 630 /* FALLTHROUGH */ 631 #endif 632 633 case ACPI_TYPE_PROCESSOR: 634 case ACPI_TYPE_THERMAL: 635 case ACPI_TYPE_POWER: 636 ad = malloc(sizeof(*ad), M_ACPI, M_NOWAIT|M_ZERO); 637 if (ad == NULL) 638 return AE_NO_MEMORY; 639 640 ad->ad_devinfo = devinfo; 641 ad->ad_handle = handle; 642 ad->ad_level = level; 643 ad->ad_scope = as; 644 ad->ad_type = type; 645 646 anu = (ACPI_NAME_UNION *)&devinfo->Name; 647 ad->ad_name[4] = '\0'; 648 for (i = 3, clear = 0; i >= 0; i--) { 649 if (!clear && anu->Ascii[i] == '_') 650 ad->ad_name[i] = '\0'; 651 else { 652 ad->ad_name[i] = anu->Ascii[i]; 653 clear = 1; 654 } 655 } 656 if (ad->ad_name[0] == '\0') 657 ad->ad_name[0] = '_'; 658 659 TAILQ_INSERT_TAIL(&as->as_devnodes, ad, ad_list); 660 661 if ((ad->ad_devinfo->Valid & ACPI_VALID_HID) == 0) 662 goto out; 663 664 #ifdef ACPI_EXTRA_DEBUG 665 aprint_normal("%s: HID %s found in scope %s level %d\n", 666 sc->sc_dev.dv_xname, 667 ad->ad_devinfo->HardwareId.Value, 668 as->as_name, ad->ad_level); 669 if (ad->ad_devinfo->Valid & ACPI_VALID_UID) 670 aprint_normal(" UID %s\n", 671 ad->ad_devinfo->UniqueId.Value); 672 if (ad->ad_devinfo->Valid & ACPI_VALID_ADR) 673 aprint_normal(" ADR 0x%016qx\n", 674 ad->ad_devinfo->Address); 675 if (ad->ad_devinfo->Valid & ACPI_VALID_STA) 676 aprint_normal(" STA 0x%08x\n", 677 ad->ad_devinfo->CurrentStatus); 678 #endif 679 } 680 } 681 out: 682 return AE_OK; 683 } 684 685 /* 686 * acpi_print: 687 * 688 * Autoconfiguration print routine for ACPI node bus. 689 */ 690 static int 691 acpi_print(void *aux, const char *pnp) 692 { 693 struct acpi_attach_args *aa = aux; 694 ACPI_STATUS rv; 695 696 if (pnp) { 697 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 698 char *pnpstr = 699 aa->aa_node->ad_devinfo->HardwareId.Value; 700 char *str; 701 702 aprint_normal("%s (%s) ", aa->aa_node->ad_name, 703 pnpstr); 704 rv = acpi_eval_string(aa->aa_node->ad_handle, 705 "_STR", &str); 706 if (ACPI_SUCCESS(rv)) { 707 aprint_normal("[%s] ", str); 708 AcpiOsFree(str); 709 } 710 #ifdef ACPIVERBOSE 711 else { 712 int i; 713 714 for (i = 0; i < sizeof(acpi_knowndevs) / 715 sizeof(acpi_knowndevs[0]); i++) { 716 if (strcmp(acpi_knowndevs[i].pnp, 717 pnpstr) == 0) { 718 aprint_normal("[%s] ", 719 acpi_knowndevs[i].str); 720 } 721 } 722 } 723 724 #endif 725 } else { 726 aprint_normal("%s (ACPI Object Type '%s' " 727 "[0x%02x]) ", aa->aa_node->ad_name, 728 AcpiUtGetTypeName(aa->aa_node->ad_devinfo->Type), 729 aa->aa_node->ad_devinfo->Type); 730 } 731 aprint_normal("at %s", pnp); 732 } else { 733 aprint_normal(" (%s", aa->aa_node->ad_name); 734 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 735 aprint_normal(", %s", aa->aa_node->ad_devinfo->HardwareId.Value); 736 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_UID) { 737 const char *uid; 738 739 uid = aa->aa_node->ad_devinfo->UniqueId.Value; 740 if (uid[0] == '\0') 741 uid = "<null>"; 742 aprint_normal("-%s", uid); 743 } 744 } 745 aprint_normal(")"); 746 } 747 748 return UNCONF; 749 } 750 751 /***************************************************************************** 752 * ACPI fixed-hardware feature handlers 753 *****************************************************************************/ 754 755 static UINT32 acpi_fixed_button_handler(void *); 756 static void acpi_fixed_button_pressed(void *); 757 758 /* 759 * acpi_enable_fixed_events: 760 * 761 * Enable any fixed-hardware feature handlers. 762 */ 763 static void 764 acpi_enable_fixed_events(struct acpi_softc *sc) 765 { 766 static int beenhere; 767 ACPI_STATUS rv; 768 769 KASSERT(beenhere == 0); 770 beenhere = 1; 771 772 /* 773 * Check for fixed-hardware buttons. 774 */ 775 776 if (AcpiGbl_FADT != NULL && AcpiGbl_FADT->PwrButton == 0) { 777 aprint_verbose("%s: fixed-feature power button present\n", 778 sc->sc_dev.dv_xname); 779 sc->sc_smpsw_power.smpsw_name = sc->sc_dev.dv_xname; 780 sc->sc_smpsw_power.smpsw_type = PSWITCH_TYPE_POWER; 781 if (sysmon_pswitch_register(&sc->sc_smpsw_power) != 0) { 782 aprint_error("%s: unable to register fixed power " 783 "button with sysmon\n", sc->sc_dev.dv_xname); 784 } else { 785 rv = AcpiInstallFixedEventHandler( 786 ACPI_EVENT_POWER_BUTTON, 787 acpi_fixed_button_handler, &sc->sc_smpsw_power); 788 if (ACPI_FAILURE(rv)) { 789 aprint_error("%s: unable to install handler " 790 "for fixed power button: %s\n", 791 sc->sc_dev.dv_xname, 792 AcpiFormatException(rv)); 793 } 794 } 795 } 796 797 if (AcpiGbl_FADT != NULL && AcpiGbl_FADT->SleepButton == 0) { 798 aprint_verbose("%s: fixed-feature sleep button present\n", 799 sc->sc_dev.dv_xname); 800 sc->sc_smpsw_sleep.smpsw_name = sc->sc_dev.dv_xname; 801 sc->sc_smpsw_sleep.smpsw_type = PSWITCH_TYPE_SLEEP; 802 if (sysmon_pswitch_register(&sc->sc_smpsw_power) != 0) { 803 aprint_error("%s: unable to register fixed sleep " 804 "button with sysmon\n", sc->sc_dev.dv_xname); 805 } else { 806 rv = AcpiInstallFixedEventHandler( 807 ACPI_EVENT_SLEEP_BUTTON, 808 acpi_fixed_button_handler, &sc->sc_smpsw_sleep); 809 if (ACPI_FAILURE(rv)) { 810 aprint_error("%s: unable to install handler " 811 "for fixed sleep button: %s\n", 812 sc->sc_dev.dv_xname, 813 AcpiFormatException(rv)); 814 } 815 } 816 } 817 } 818 819 /* 820 * acpi_fixed_button_handler: 821 * 822 * Event handler for the fixed buttons. 823 */ 824 static UINT32 825 acpi_fixed_button_handler(void *context) 826 { 827 struct sysmon_pswitch *smpsw = context; 828 int rv; 829 830 #ifdef ACPI_BUT_DEBUG 831 printf("%s: fixed button handler\n", smpsw->smpsw_name); 832 #endif 833 834 rv = AcpiOsQueueForExecution(OSD_PRIORITY_LO, 835 acpi_fixed_button_pressed, smpsw); 836 if (ACPI_FAILURE(rv)) 837 printf("%s: WARNING: unable to queue fixed button pressed " 838 "callback: %s\n", smpsw->smpsw_name, 839 AcpiFormatException(rv)); 840 841 return ACPI_INTERRUPT_HANDLED; 842 } 843 844 /* 845 * acpi_fixed_button_pressed: 846 * 847 * Deal with a fixed button being pressed. 848 */ 849 static void 850 acpi_fixed_button_pressed(void *context) 851 { 852 struct sysmon_pswitch *smpsw = context; 853 854 #ifdef ACPI_BUT_DEBUG 855 printf("%s: fixed button pressed, calling sysmon\n", 856 smpsw->smpsw_name); 857 #endif 858 859 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 860 } 861 862 /***************************************************************************** 863 * ACPI utility routines. 864 *****************************************************************************/ 865 866 /* 867 * acpi_eval_integer: 868 * 869 * Evaluate an integer object. 870 */ 871 ACPI_STATUS 872 acpi_eval_integer(ACPI_HANDLE handle, const char *path, ACPI_INTEGER *valp) 873 { 874 ACPI_STATUS rv; 875 ACPI_BUFFER buf; 876 ACPI_OBJECT param; 877 878 if (handle == NULL) 879 handle = ACPI_ROOT_OBJECT; 880 881 buf.Pointer = ¶m; 882 buf.Length = sizeof(param); 883 884 rv = AcpiEvaluateObjectTyped(handle, path, NULL, &buf, ACPI_TYPE_INTEGER); 885 if (ACPI_SUCCESS(rv)) 886 *valp = param.Integer.Value; 887 888 return rv; 889 } 890 891 /* 892 * acpi_eval_string: 893 * 894 * Evaluate a (Unicode) string object. 895 */ 896 ACPI_STATUS 897 acpi_eval_string(ACPI_HANDLE handle, const char *path, char **stringp) 898 { 899 ACPI_STATUS rv; 900 ACPI_BUFFER buf; 901 902 if (handle == NULL) 903 handle = ACPI_ROOT_OBJECT; 904 905 buf.Pointer = NULL; 906 buf.Length = ACPI_ALLOCATE_BUFFER; 907 908 rv = AcpiEvaluateObjectTyped(handle, path, NULL, &buf, ACPI_TYPE_STRING); 909 if (ACPI_SUCCESS(rv)) { 910 ACPI_OBJECT *param = buf.Pointer; 911 const char *ptr = param->String.Pointer; 912 size_t len = param->String.Length; 913 if ((*stringp = AcpiOsAllocate(len)) == NULL) 914 rv = AE_NO_MEMORY; 915 else 916 (void)memcpy(*stringp, ptr, len); 917 AcpiOsFree(param); 918 } 919 920 return rv; 921 } 922 923 924 /* 925 * acpi_eval_struct: 926 * 927 * Evaluate a more complex structure. 928 * Caller must free buf.Pointer by AcpiOsFree(). 929 */ 930 ACPI_STATUS 931 acpi_eval_struct(ACPI_HANDLE handle, const char *path, ACPI_BUFFER *bufp) 932 { 933 ACPI_STATUS rv; 934 935 if (handle == NULL) 936 handle = ACPI_ROOT_OBJECT; 937 938 bufp->Pointer = NULL; 939 bufp->Length = ACPI_ALLOCATE_BUFFER; 940 941 rv = AcpiEvaluateObject(handle, path, NULL, bufp); 942 943 return rv; 944 } 945 946 /* 947 * acpi_foreach_package_object: 948 * 949 * Iterate over all objects in a in a packages and pass then all 950 * to a function. If the called function returns non AE_OK, the 951 * iteration is stopped and that value is returned. 952 */ 953 954 ACPI_STATUS 955 acpi_foreach_package_object(ACPI_OBJECT *pkg, 956 ACPI_STATUS (*func)(ACPI_OBJECT *, void *), 957 void *arg) 958 { 959 ACPI_STATUS rv = AE_OK; 960 int i; 961 962 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE) 963 return AE_BAD_PARAMETER; 964 965 for (i = 0; i < pkg->Package.Count; i++) { 966 rv = (*func)(&pkg->Package.Elements[i], arg); 967 if (ACPI_FAILURE(rv)) 968 break; 969 } 970 971 return rv; 972 } 973 974 const char * 975 acpi_name(ACPI_HANDLE handle) 976 { 977 static char buffer[80]; 978 ACPI_BUFFER buf; 979 ACPI_STATUS rv; 980 981 buf.Length = sizeof(buffer); 982 buf.Pointer = buffer; 983 984 rv = AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf); 985 if (ACPI_FAILURE(rv)) 986 return "(unknown acpi path)"; 987 return buffer; 988 } 989 990 /* 991 * acpi_get: 992 * 993 * Fetch data info the specified (empty) ACPI buffer. 994 * Caller must free buf.Pointer by AcpiOsFree(). 995 */ 996 ACPI_STATUS 997 acpi_get(ACPI_HANDLE handle, ACPI_BUFFER *buf, 998 ACPI_STATUS (*getit)(ACPI_HANDLE, ACPI_BUFFER *)) 999 { 1000 buf->Pointer = NULL; 1001 buf->Length = ACPI_ALLOCATE_BUFFER; 1002 1003 return (*getit)(handle, buf); 1004 } 1005 1006 1007 /* 1008 * acpi_match_hid 1009 * 1010 * Match given ids against _HID and _CIDs 1011 */ 1012 int 1013 acpi_match_hid(ACPI_DEVICE_INFO *ad, const char * const *ids) 1014 { 1015 int i; 1016 1017 while (*ids) { 1018 if (ad->Valid & ACPI_VALID_HID) { 1019 if (pmatch(ad->HardwareId.Value, *ids, NULL) == 2) 1020 return 1; 1021 } 1022 1023 if (ad->Valid & ACPI_VALID_CID) { 1024 for (i = 0; i < ad->CompatibilityId.Count; i++) { 1025 if (pmatch(ad->CompatibilityId.Id[i].Value, *ids, NULL) == 2) 1026 return 1; 1027 } 1028 } 1029 ids++; 1030 } 1031 1032 return 0; 1033 } 1034 1035 /* 1036 * acpi_set_wake_gpe 1037 * 1038 * Set GPE as both Runtime and Wake 1039 */ 1040 void 1041 acpi_set_wake_gpe(ACPI_HANDLE handle) 1042 { 1043 ACPI_BUFFER buf; 1044 ACPI_STATUS rv; 1045 ACPI_OBJECT *p, *elt; 1046 1047 rv = acpi_eval_struct(handle, METHOD_NAME__PRW, &buf); 1048 if (ACPI_FAILURE(rv)) 1049 return; /* just ignore */ 1050 1051 p = buf.Pointer; 1052 if (p->Type != ACPI_TYPE_PACKAGE || p->Package.Count < 2) 1053 goto out; /* just ignore */ 1054 1055 elt = p->Package.Elements; 1056 1057 /* TBD: package support */ 1058 AcpiSetGpeType(NULL, elt[0].Integer.Value, ACPI_GPE_TYPE_WAKE_RUN); 1059 AcpiEnableGpe(NULL, elt[0].Integer.Value, ACPI_NOT_ISR); 1060 1061 out: 1062 AcpiOsFree(buf.Pointer); 1063 } 1064 1065 1066 /***************************************************************************** 1067 * ACPI sleep support. 1068 *****************************************************************************/ 1069 1070 static int 1071 is_available_state(struct acpi_softc *sc, int state) 1072 { 1073 UINT8 type_a, type_b; 1074 1075 return ACPI_SUCCESS(AcpiGetSleepTypeData((UINT8)state, 1076 &type_a, &type_b)); 1077 } 1078 1079 /* 1080 * acpi_enter_sleep_state: 1081 * 1082 * enter to the specified sleep state. 1083 */ 1084 1085 ACPI_STATUS 1086 acpi_enter_sleep_state(struct acpi_softc *sc, int state) 1087 { 1088 int s; 1089 ACPI_STATUS ret = AE_OK; 1090 1091 if (state == acpi_sleepstate) 1092 return AE_OK; 1093 1094 aprint_normal("%s: entering state %d\n", sc->sc_dev.dv_xname, state); 1095 1096 switch (state) { 1097 case ACPI_STATE_S0: 1098 break; 1099 case ACPI_STATE_S1: 1100 case ACPI_STATE_S2: 1101 case ACPI_STATE_S3: 1102 case ACPI_STATE_S4: 1103 if (!is_available_state(sc, state)) { 1104 aprint_error("%s: cannot enter the sleep state (%d).\n", 1105 sc->sc_dev.dv_xname, state); 1106 break; 1107 } 1108 ret = AcpiEnterSleepStatePrep(state); 1109 if (ACPI_FAILURE(ret)) { 1110 aprint_error("%s: failed preparing to sleep (%s)\n", 1111 sc->sc_dev.dv_xname, AcpiFormatException(ret)); 1112 break; 1113 } 1114 acpi_sleepstate = state; 1115 if (state == ACPI_STATE_S1) { 1116 /* just enter the state */ 1117 acpi_md_OsDisableInterrupt(); 1118 AcpiEnterSleepState((UINT8)state); 1119 } else { 1120 /* XXX: powerhooks(9) framework is too poor to 1121 * support ACPI sleep state... 1122 */ 1123 dopowerhooks(PWR_SOFTSUSPEND); 1124 s = splhigh(); 1125 dopowerhooks(PWR_SUSPEND); 1126 acpi_md_sleep(state); 1127 dopowerhooks(PWR_RESUME); 1128 splx(s); 1129 dopowerhooks(PWR_SOFTRESUME); 1130 if (state==ACPI_STATE_S4) 1131 AcpiEnable(); 1132 } 1133 AcpiLeaveSleepState((UINT8)state); 1134 break; 1135 case ACPI_STATE_S5: 1136 ret = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1137 if (ACPI_FAILURE(ret)) { 1138 aprint_error("%s: failed preparing to sleep (%s)\n", 1139 sc->sc_dev.dv_xname, AcpiFormatException(ret)); 1140 break; 1141 } 1142 acpi_sleepstate = state; 1143 acpi_md_OsDisableInterrupt(); 1144 AcpiEnterSleepState(ACPI_STATE_S5); 1145 aprint_error("%s: WARNING powerdown failed!\n", 1146 sc->sc_dev.dv_xname); 1147 break; 1148 } 1149 1150 aprint_normal("%s: resuming\n", sc->sc_dev.dv_xname); 1151 acpi_sleepstate = ACPI_STATE_S0; 1152 return ret; 1153 } 1154 1155 #if defined(ACPI_ACTIVATE_DEV) 1156 /* XXX This very incomplete */ 1157 ACPI_STATUS 1158 acpi_allocate_resources(ACPI_HANDLE handle) 1159 { 1160 ACPI_BUFFER bufp, bufc, bufn; 1161 ACPI_RESOURCE *resp, *resc, *resn; 1162 ACPI_RESOURCE_IRQ *irq; 1163 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 1164 ACPI_STATUS rv; 1165 uint delta; 1166 1167 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 1168 if (ACPI_FAILURE(rv)) 1169 goto out; 1170 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 1171 if (ACPI_FAILURE(rv)) { 1172 goto out1; 1173 } 1174 1175 bufn.Length = 1000; 1176 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 1177 resp = bufp.Pointer; 1178 resc = bufc.Pointer; 1179 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 1180 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1181 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 1182 resp = ACPI_NEXT_RESOURCE(resp); 1183 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 1184 break; 1185 /* Found identical Id */ 1186 resn->Type = resc->Type; 1187 switch (resc->Type) { 1188 case ACPI_RESOURCE_TYPE_IRQ: 1189 memcpy(&resn->Data, &resp->Data, 1190 sizeof(ACPI_RESOURCE_IRQ)); 1191 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 1192 irq->Interrupts[0] = 1193 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 1194 Interrupts[irq->InterruptCount-1]; 1195 irq->InterruptCount = 1; 1196 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 1197 break; 1198 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 1199 memcpy(&resn->Data, &resp->Data, 1200 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 1201 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 1202 #if 0 1203 /* 1204 * XXX not duplicating the interrupt logic above 1205 * because its not clear what it accomplishes. 1206 */ 1207 xirq->Interrupts[0] = 1208 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 1209 Interrupts[irq->NumberOfInterrupts-1]; 1210 xirq->NumberOfInterrupts = 1; 1211 #endif 1212 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 1213 break; 1214 case ACPI_RESOURCE_TYPE_IO: 1215 memcpy(&resn->Data, &resp->Data, 1216 sizeof(ACPI_RESOURCE_IO)); 1217 resn->Length = resp->Length; 1218 break; 1219 default: 1220 printf("acpi_allocate_resources: res=%d\n", resc->Type); 1221 rv = AE_BAD_DATA; 1222 goto out2; 1223 } 1224 resc = ACPI_NEXT_RESOURCE(resc); 1225 resn = ACPI_NEXT_RESOURCE(resn); 1226 resp = ACPI_NEXT_RESOURCE(resp); 1227 delta = (UINT8 *)resn - (UINT8 *)bufn.Pointer; 1228 if (delta >= 1229 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 1230 bufn.Length *= 2; 1231 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 1232 M_ACPI, M_WAITOK); 1233 resn = (ACPI_RESOURCE *)((UINT8 *)bufn.Pointer + delta); 1234 } 1235 } 1236 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1237 printf("acpi_allocate_resources: resc not exhausted\n"); 1238 rv = AE_BAD_DATA; 1239 goto out3; 1240 } 1241 1242 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 1243 rv = AcpiSetCurrentResources(handle, &bufn); 1244 if (ACPI_FAILURE(rv)) { 1245 printf("acpi_allocate_resources: AcpiSetCurrentResources %s\n", 1246 AcpiFormatException(rv)); 1247 } 1248 1249 out3: 1250 free(bufn.Pointer, M_ACPI); 1251 out2: 1252 AcpiOsFree(bufc.Pointer); 1253 out1: 1254 AcpiOsFree(bufp.Pointer); 1255 out: 1256 return rv; 1257 } 1258 #endif /* ACPI_ACTIVATE_DEV */ 1259 1260 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1261 { 1262 const struct sysctlnode *node; 1263 const struct sysctlnode *ssnode; 1264 1265 if (sysctl_createv(clog, 0, NULL, NULL, 1266 CTLFLAG_PERMANENT, 1267 CTLTYPE_NODE, "hw", NULL, 1268 NULL, 0, NULL, 0, 1269 CTL_HW, CTL_EOL) != 0) 1270 return; 1271 1272 if (sysctl_createv(clog, 0, NULL, &node, 1273 CTLFLAG_PERMANENT, 1274 CTLTYPE_NODE, "acpi", NULL, 1275 NULL, 0, NULL, 0, 1276 CTL_HW, CTL_CREATE, CTL_EOL) != 0) 1277 return; 1278 1279 acpi_node = node->sysctl_num; 1280 1281 /* ACPI sleepstate sysctl */ 1282 if (sysctl_createv(NULL, 0, NULL, &node, 1283 CTLFLAG_PERMANENT, 1284 CTLTYPE_NODE, "machdep", NULL, 1285 NULL, 0, NULL, 0, CTL_MACHDEP, CTL_EOL) != 0) 1286 return; 1287 if (sysctl_createv(NULL, 0, &node, &ssnode, 1288 CTLFLAG_READWRITE, CTLTYPE_INT, "sleep_state", 1289 NULL, sysctl_hw_acpi_sleepstate, 0, NULL, 0, CTL_CREATE, 1290 CTL_EOL) != 0) 1291 return; 1292 } 1293 1294 static int 1295 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1296 { 1297 int error, t; 1298 struct sysctlnode node; 1299 1300 node = *rnode; 1301 t = acpi_sleepstate; 1302 node.sysctl_data = &t; 1303 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1304 if (error || newp == NULL) 1305 return error; 1306 1307 if (acpi_softc == NULL) 1308 return ENOSYS; 1309 1310 acpi_enter_sleep_state(acpi_softc, t); 1311 1312 return 0; 1313 } 1314
Indexes created Sun Sep 21 16:09:51 GMT 2025