acpi.c revision 1.227
1/* $NetBSD: acpi.c,v 1.227 2011/01/05 08:08:47 jruoho 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32/* 33 * Copyright (c) 2003 Wasabi Systems, Inc. 34 * All rights reserved. 35 * 36 * Written by Frank van der Linden for Wasabi Systems, Inc. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed for the NetBSD Project by 49 * Wasabi Systems, Inc. 50 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 51 * or promote products derived from this software without specific prior 52 * written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 56 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 57 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 58 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 59 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 60 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 61 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 62 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 63 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 64 * POSSIBILITY OF SUCH DAMAGE. 65 */ 66 67/* 68 * Copyright 2001, 2003 Wasabi Systems, Inc. 69 * All rights reserved. 70 * 71 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 72 * 73 * Redistribution and use in source and binary forms, with or without 74 * modification, are permitted provided that the following conditions 75 * are met: 76 * 1. Redistributions of source code must retain the above copyright 77 * notice, this list of conditions and the following disclaimer. 78 * 2. Redistributions in binary form must reproduce the above copyright 79 * notice, this list of conditions and the following disclaimer in the 80 * documentation and/or other materials provided with the distribution. 81 * 3. All advertising materials mentioning features or use of this software 82 * must display the following acknowledgement: 83 * This product includes software developed for the NetBSD Project by 84 * Wasabi Systems, Inc. 85 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 86 * or promote products derived from this software without specific prior 87 * written permission. 88 * 89 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 90 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 91 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 92 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 93 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 94 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 95 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 96 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 97 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 98 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 99 * POSSIBILITY OF SUCH DAMAGE. 100 */ 101 102#include <sys/cdefs.h> 103__KERNEL_RCSID(0, "$NetBSD: acpi.c,v 1.227 2011/01/05 08:08:47 jruoho Exp $"); 104 105#include "opt_acpi.h" 106#include "opt_pcifixup.h" 107 108#include <sys/param.h> 109#include <sys/device.h> 110#include <sys/kernel.h> 111#include <sys/malloc.h> 112#include <sys/module.h> 113#include <sys/mutex.h> 114#include <sys/sysctl.h> 115#include <sys/systm.h> 116#include <sys/timetc.h> 117 118#include <dev/acpi/acpireg.h> 119#include <dev/acpi/acpivar.h> 120#include <dev/acpi/acpi_osd.h> 121#include <dev/acpi/acpi_pci.h> 122#include <dev/acpi/acpi_power.h> 123#include <dev/acpi/acpi_timer.h> 124#include <dev/acpi/acpi_wakedev.h> 125 126#define _COMPONENT ACPI_BUS_COMPONENT 127ACPI_MODULE_NAME ("acpi") 128 129#if defined(ACPI_PCI_FIXUP) 130#error The option ACPI_PCI_FIXUP has been obsoleted by PCI_INTR_FIXUP_DISABLED. Please adjust your kernel configuration file. 131#endif 132 133#ifdef PCI_INTR_FIXUP_DISABLED 134#include <dev/pci/pcidevs.h> 135#endif 136 137MALLOC_DECLARE(M_ACPI); 138 139#include <machine/acpi_machdep.h> 140 141#ifdef ACPI_DEBUGGER 142#define ACPI_DBGR_INIT 0x01 143#define ACPI_DBGR_TABLES 0x02 144#define ACPI_DBGR_ENABLE 0x04 145#define ACPI_DBGR_PROBE 0x08 146#define ACPI_DBGR_RUNNING 0x10 147 148static int acpi_dbgr = 0x00; 149#endif 150 151/* 152 * This is a flag we set when the ACPI subsystem is active. Machine 153 * dependent code may wish to skip other steps (such as attaching 154 * subsystems that ACPI supercedes) when ACPI is active. 155 */ 156int acpi_active; 157 158int acpi_force_load = 0; 159int acpi_suspended = 0; 160int acpi_verbose_loaded = 0; 161 162struct acpi_softc *acpi_softc; 163static uint64_t acpi_root_pointer; 164extern kmutex_t acpi_interrupt_list_mtx; 165extern struct cfdriver acpi_cd; 166static ACPI_HANDLE acpi_scopes[4]; 167ACPI_TABLE_HEADER *madt_header; 168 169/* 170 * This structure provides a context for the ACPI 171 * namespace walk performed in acpi_build_tree(). 172 */ 173struct acpi_walkcontext { 174 struct acpi_softc *aw_sc; 175 struct acpi_devnode *aw_parent; 176}; 177 178/* 179 * Ignored HIDs. 180 */ 181static const char * const acpi_ignored_ids[] = { 182#if defined(i386) || defined(x86_64) 183 "PNP0000", /* AT interrupt controller is handled internally */ 184 "PNP0200", /* AT DMA controller is handled internally */ 185 "PNP0A??", /* PCI Busses are handled internally */ 186 "PNP0B00", /* AT RTC is handled internally */ 187 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 188#endif 189#if defined(x86_64) 190 "PNP0C04", /* FPU is handled internally */ 191#endif 192 NULL 193}; 194 195/* 196 * Devices that should be attached early. 197 */ 198static const char * const acpi_early_ids[] = { 199 "PNP0C09", /* acpiec(4) */ 200 NULL 201}; 202 203static int acpi_match(device_t, cfdata_t, void *); 204static int acpi_submatch(device_t, cfdata_t, const int *, void *); 205static void acpi_attach(device_t, device_t, void *); 206static int acpi_detach(device_t, int); 207static void acpi_childdet(device_t, device_t); 208static bool acpi_suspend(device_t, const pmf_qual_t *); 209static bool acpi_resume(device_t, const pmf_qual_t *); 210 211static void acpi_build_tree(struct acpi_softc *); 212static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, 213 void *, void **); 214static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t, 215 void *, void **); 216 217#ifdef ACPI_ACTIVATE_DEV 218static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **); 219static ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE); 220#endif 221 222static int acpi_rescan(device_t, const char *, const int *); 223static void acpi_rescan_early(struct acpi_softc *); 224static void acpi_rescan_nodes(struct acpi_softc *); 225static void acpi_rescan_capabilities(device_t); 226static int acpi_print(void *aux, const char *); 227 228static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); 229 230static void acpi_register_fixed_button(struct acpi_softc *, int); 231static void acpi_deregister_fixed_button(struct acpi_softc *, int); 232static uint32_t acpi_fixed_button_handler(void *); 233static void acpi_fixed_button_pressed(void *); 234 235static void acpi_sleep_init(struct acpi_softc *); 236 237static int sysctl_hw_acpi_fixedstats(SYSCTLFN_PROTO); 238static int sysctl_hw_acpi_sleepstate(SYSCTLFN_PROTO); 239static int sysctl_hw_acpi_sleepstates(SYSCTLFN_PROTO); 240 241static bool acpi_is_scope(struct acpi_devnode *); 242static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 243static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 244 245void acpi_print_verbose_stub(struct acpi_softc *); 246void acpi_print_dev_stub(const char *); 247 248void (*acpi_print_verbose)(struct acpi_softc *) = acpi_print_verbose_stub; 249void (*acpi_print_dev)(const char *) = acpi_print_dev_stub; 250 251CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 252 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 253 254/* 255 * Probe for ACPI support. 256 * 257 * This is called by the machine-dependent ACPI front-end. 258 * Note: this is not an autoconfiguration interface function. 259 */ 260int 261acpi_probe(void) 262{ 263 ACPI_TABLE_HEADER *rsdt; 264 const char *func; 265 static int once; 266 bool initialized; 267 ACPI_STATUS rv; 268 269 if (once != 0) 270 panic("%s: already probed", __func__); 271 272 once = 1; 273 func = NULL; 274 acpi_softc = NULL; 275 initialized = false; 276 277 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 278 279 /* 280 * Start up ACPICA. 281 */ 282#ifdef ACPI_DEBUGGER 283 if (acpi_dbgr & ACPI_DBGR_INIT) 284 acpi_osd_debugger(); 285#endif 286 287 CTASSERT(TRUE == true); 288 CTASSERT(FALSE == false); 289 290 AcpiGbl_AllMethodsSerialized = false; 291 AcpiGbl_EnableInterpreterSlack = true; 292 293 rv = AcpiInitializeSubsystem(); 294 295 if (ACPI_SUCCESS(rv)) 296 initialized = true; 297 else { 298 func = "AcpiInitializeSubsystem()"; 299 goto fail; 300 } 301 302 /* 303 * Allocate space for RSDT/XSDT and DSDT, 304 * but allow resizing if more tables exist. 305 */ 306 rv = AcpiInitializeTables(NULL, 2, true); 307 308 if (ACPI_FAILURE(rv)) { 309 func = "AcpiInitializeTables()"; 310 goto fail; 311 } 312 313#ifdef ACPI_DEBUGGER 314 if (acpi_dbgr & ACPI_DBGR_TABLES) 315 acpi_osd_debugger(); 316#endif 317 318 rv = AcpiLoadTables(); 319 320 if (ACPI_FAILURE(rv)) { 321 func = "AcpiLoadTables()"; 322 goto fail; 323 } 324 325 rsdt = acpi_map_rsdt(); 326 327 if (rsdt == NULL) { 328 func = "acpi_map_rsdt()"; 329 rv = AE_ERROR; 330 goto fail; 331 } 332 333 if (acpi_force_load == 0 && (acpi_find_quirks() & ACPI_QUIRK_BROKEN)) { 334 aprint_normal("ACPI: BIOS is listed as broken:\n"); 335 aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 336 "AslId <%4.4s,%08x>\n", 337 rsdt->OemId, rsdt->OemTableId, 338 rsdt->OemRevision, 339 rsdt->AslCompilerId, 340 rsdt->AslCompilerRevision); 341 aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n"); 342 acpi_unmap_rsdt(rsdt); 343 AcpiTerminate(); 344 return 0; 345 } 346 if (acpi_force_load == 0 && (acpi_find_quirks() & ACPI_QUIRK_OLDBIOS)) { 347 aprint_normal("ACPI: BIOS is too old (%s). Set acpi_force_load to use.\n", 348 pmf_get_platform("firmware-date")); 349 acpi_unmap_rsdt(rsdt); 350 AcpiTerminate(); 351 return 0; 352 } 353 354 acpi_unmap_rsdt(rsdt); 355 356 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 357 358 if (ACPI_FAILURE(rv)) { 359 func = "AcpiEnableSubsystem()"; 360 goto fail; 361 } 362 363 /* 364 * Looks like we have ACPI! 365 */ 366 return 1; 367 368fail: 369 KASSERT(rv != AE_OK); 370 KASSERT(func != NULL); 371 372 aprint_error("%s: failed to probe ACPI: %s\n", 373 func, AcpiFormatException(rv)); 374 375 if (initialized != false) 376 (void)AcpiTerminate(); 377 378 return 0; 379} 380 381void 382acpi_disable(void) 383{ 384 385 if (acpi_softc == NULL) 386 return; 387 388 KASSERT(acpi_active != 0); 389 390 if (AcpiGbl_FADT.SmiCommand != 0) 391 AcpiDisable(); 392} 393 394int 395acpi_check(device_t parent, const char *ifattr) 396{ 397 return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); 398} 399 400/* 401 * Autoconfiguration. 402 */ 403static int 404acpi_match(device_t parent, cfdata_t match, void *aux) 405{ 406 /* 407 * XXX: Nada; MD code has called acpi_probe(). 408 */ 409 return 1; 410} 411 412static int 413acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 414{ 415 struct cfattach *ca; 416 417 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 418 419 return (ca == &acpi_ca); 420} 421 422static void 423acpi_attach(device_t parent, device_t self, void *aux) 424{ 425 struct acpi_softc *sc = device_private(self); 426 struct acpibus_attach_args *aa = aux; 427 ACPI_TABLE_HEADER *rsdt; 428 ACPI_STATUS rv; 429 430 aprint_naive("\n"); 431 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 432 433 if (acpi_softc != NULL) 434 panic("%s: already attached", __func__); 435 436 rsdt = acpi_map_rsdt(); 437 438 if (rsdt == NULL) 439 aprint_error_dev(self, "X/RSDT: Not found\n"); 440 else { 441 aprint_verbose_dev(self, 442 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 443 rsdt->OemId, rsdt->OemTableId, 444 rsdt->OemRevision, 445 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 446 } 447 448 acpi_unmap_rsdt(rsdt); 449 450 sc->sc_dev = self; 451 sc->sc_root = NULL; 452 453 sc->sc_sleepstate = ACPI_STATE_S0; 454 sc->sc_quirks = acpi_find_quirks(); 455 456 sysmon_power_settype("acpi"); 457 458 sc->sc_iot = aa->aa_iot; 459 sc->sc_memt = aa->aa_memt; 460 sc->sc_pc = aa->aa_pc; 461 sc->sc_pciflags = aa->aa_pciflags; 462 sc->sc_ic = aa->aa_ic; 463 464 SIMPLEQ_INIT(&sc->ad_head); 465 466 acpi_softc = sc; 467 468 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) 469 aprint_error_dev(self, "couldn't establish power handler\n"); 470 471 /* 472 * Bring ACPI on-line. 473 */ 474#ifdef ACPI_DEBUGGER 475 if (acpi_dbgr & ACPI_DBGR_ENABLE) 476 acpi_osd_debugger(); 477#endif 478 479#define ACPI_ENABLE_PHASE1 \ 480 (ACPI_NO_HANDLER_INIT | ACPI_NO_EVENT_INIT) 481#define ACPI_ENABLE_PHASE2 \ 482 (ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE | \ 483 ACPI_NO_ADDRESS_SPACE_INIT) 484 485 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE1); 486 487 if (ACPI_FAILURE(rv)) 488 goto fail; 489 490 acpi_md_callback(); 491 492 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE2); 493 494 if (ACPI_FAILURE(rv)) 495 goto fail; 496 497 /* 498 * Early EC handler initialization if ECDT table is available. 499 */ 500 config_found_ia(self, "acpiecdtbus", aa, NULL); 501 502 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 503 504 if (ACPI_FAILURE(rv)) 505 goto fail; 506 507 /* 508 * Install global notify handlers. 509 */ 510 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 511 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 512 513 if (ACPI_FAILURE(rv)) 514 goto fail; 515 516 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 517 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 518 519 if (ACPI_FAILURE(rv)) 520 goto fail; 521 522 acpi_active = 1; 523 524 /* Show SCI interrupt. */ 525 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 526 AcpiGbl_FADT.SciInterrupt); 527 528 /* 529 * Install fixed-event handlers. 530 */ 531 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 532 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 533 534 acpitimer_init(sc); 535 536#ifdef ACPI_DEBUGGER 537 if (acpi_dbgr & ACPI_DBGR_PROBE) 538 acpi_osd_debugger(); 539#endif 540 541 /* 542 * Scan the namespace and build our device tree. 543 */ 544 acpi_build_tree(sc); 545 acpi_sleep_init(sc); 546 547#ifdef ACPI_DEBUGGER 548 if (acpi_dbgr & ACPI_DBGR_RUNNING) 549 acpi_osd_debugger(); 550#endif 551 552#ifdef ACPI_DEBUG 553 acpi_debug_init(); 554#endif 555 556 /* 557 * Print debug information. 558 */ 559 acpi_print_verbose(sc); 560 561 return; 562 563fail: 564 aprint_error("%s: failed to initialize ACPI: %s\n", 565 __func__, AcpiFormatException(rv)); 566} 567 568/* 569 * XXX: This is incomplete. 570 */ 571static int 572acpi_detach(device_t self, int flags) 573{ 574 struct acpi_softc *sc = device_private(self); 575 ACPI_STATUS rv; 576 int rc; 577 578 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 579 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 580 581 if (ACPI_FAILURE(rv)) 582 return EBUSY; 583 584 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 585 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 586 587 if (ACPI_FAILURE(rv)) 588 return EBUSY; 589 590 if ((rc = config_detach_children(self, flags)) != 0) 591 return rc; 592 593 if ((rc = acpitimer_detach()) != 0) 594 return rc; 595 596 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 597 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 598 599 pmf_device_deregister(self); 600 601 acpi_softc = NULL; 602 603 return 0; 604} 605 606/* 607 * XXX: Need to reclaim any resources? Yes. 608 */ 609static void 610acpi_childdet(device_t self, device_t child) 611{ 612 struct acpi_softc *sc = device_private(self); 613 struct acpi_devnode *ad; 614 615 if (sc->sc_apmbus == child) 616 sc->sc_apmbus = NULL; 617 618 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 619 620 if (ad->ad_device == child) 621 ad->ad_device = NULL; 622 } 623} 624 625static bool 626acpi_suspend(device_t dv, const pmf_qual_t *qual) 627{ 628 629 acpi_suspended = 1; 630 631 return true; 632} 633 634static bool 635acpi_resume(device_t dv, const pmf_qual_t *qual) 636{ 637 638 acpi_suspended = 0; 639 640 return true; 641} 642 643/* 644 * Namespace scan. 645 */ 646static void 647acpi_build_tree(struct acpi_softc *sc) 648{ 649 struct acpi_walkcontext awc; 650 651 /* 652 * Get the root scope handles. 653 */ 654 KASSERT(__arraycount(acpi_scopes) == 4); 655 656 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 657 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 658 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 659 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 660 661 /* 662 * Make the root node. 663 */ 664 awc.aw_sc = sc; 665 awc.aw_parent = NULL; 666 667 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 668 669 KASSERT(sc->sc_root == NULL); 670 KASSERT(awc.aw_parent != NULL); 671 672 sc->sc_root = awc.aw_parent; 673 674 /* 675 * Build the internal namespace. 676 */ 677 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 678 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 679 680 /* 681 * Scan the internal namespace. 682 */ 683 (void)acpi_pcidev_scan(sc->sc_root); 684 (void)acpi_rescan(sc->sc_dev, NULL, NULL); 685 686 /* 687 * Defer rest of the configuration. 688 */ 689 (void)config_defer(sc->sc_dev, acpi_rescan_capabilities); 690} 691 692static ACPI_STATUS 693acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 694 void *context, void **status) 695{ 696 struct acpi_walkcontext *awc = context; 697 struct acpi_softc *sc = awc->aw_sc; 698 struct acpi_devnode *ad; 699 ACPI_DEVICE_INFO *devinfo; 700 ACPI_OBJECT_TYPE type; 701 ACPI_NAME_UNION *anu; 702 ACPI_STATUS rv; 703 int clear, i; 704 705 rv = AcpiGetObjectInfo(handle, &devinfo); 706 707 if (ACPI_FAILURE(rv)) 708 return AE_OK; /* Do not terminate the walk. */ 709 710 type = devinfo->Type; 711 712 switch (type) { 713 714 case ACPI_TYPE_DEVICE: 715 716#ifdef ACPI_ACTIVATE_DEV 717 acpi_activate_device(handle, &devinfo); 718#endif 719 720 case ACPI_TYPE_PROCESSOR: 721 case ACPI_TYPE_THERMAL: 722 case ACPI_TYPE_POWER: 723 724 ad = malloc(sizeof(*ad), M_ACPI, M_NOWAIT | M_ZERO); 725 726 if (ad == NULL) 727 return AE_NO_MEMORY; 728 729 ad->ad_device = NULL; 730 ad->ad_notify = NULL; 731 ad->ad_pciinfo = NULL; 732 733 ad->ad_type = type; 734 ad->ad_handle = handle; 735 ad->ad_devinfo = devinfo; 736 737 ad->ad_root = sc->sc_dev; 738 ad->ad_parent = awc->aw_parent; 739 740 anu = (ACPI_NAME_UNION *)&devinfo->Name; 741 ad->ad_name[4] = '\0'; 742 743 for (i = 3, clear = 0; i >= 0; i--) { 744 745 if (clear == 0 && anu->Ascii[i] == '_') 746 ad->ad_name[i] = '\0'; 747 else { 748 ad->ad_name[i] = anu->Ascii[i]; 749 clear = 1; 750 } 751 } 752 753 if (ad->ad_name[0] == '\0') 754 ad->ad_name[0] = '_'; 755 756 SIMPLEQ_INIT(&ad->ad_child_head); 757 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 758 759 acpi_set_node(ad); 760 761 if (ad->ad_parent != NULL) { 762 763 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 764 ad, ad_child_list); 765 } 766 767 awc->aw_parent = ad; 768 } 769 770 return AE_OK; 771} 772 773static ACPI_STATUS 774acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 775 void *context, void **status) 776{ 777 struct acpi_walkcontext *awc = context; 778 779 KASSERT(awc != NULL); 780 KASSERT(awc->aw_parent != NULL); 781 782 if (handle == awc->aw_parent->ad_handle) 783 awc->aw_parent = awc->aw_parent->ad_parent; 784 785 return AE_OK; 786} 787 788#ifdef ACPI_ACTIVATE_DEV 789static void 790acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 791{ 792 static const int valid = ACPI_VALID_STA | ACPI_VALID_HID; 793 ACPI_DEVICE_INFO *newdi; 794 ACPI_STATUS rv; 795 uint32_t old; 796 797 /* 798 * If the device is valid and present, 799 * but not enabled, try to activate it. 800 */ 801 if (((*di)->Valid & valid) != valid) 802 return; 803 804 old = (*di)->CurrentStatus; 805 806 if ((old & (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED)) != 807 ACPI_STA_DEVICE_PRESENT) 808 return; 809 810 rv = acpi_allocate_resources(handle); 811 812 if (ACPI_FAILURE(rv)) 813 goto fail; 814 815 rv = AcpiGetObjectInfo(handle, &newdi); 816 817 if (ACPI_FAILURE(rv)) 818 goto fail; 819 820 ACPI_FREE(*di); 821 *di = newdi; 822 823 aprint_verbose_dev(acpi_softc->sc_dev, 824 "%s activated, STA 0x%08X -> STA 0x%08X\n", 825 (*di)->HardwareId.String, old, (*di)->CurrentStatus); 826 827 return; 828 829fail: 830 aprint_error_dev(acpi_softc->sc_dev, "failed to " 831 "activate %s\n", (*di)->HardwareId.String); 832} 833 834/* 835 * XXX: This very incomplete. 836 */ 837ACPI_STATUS 838acpi_allocate_resources(ACPI_HANDLE handle) 839{ 840 ACPI_BUFFER bufp, bufc, bufn; 841 ACPI_RESOURCE *resp, *resc, *resn; 842 ACPI_RESOURCE_IRQ *irq; 843 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 844 ACPI_STATUS rv; 845 uint delta; 846 847 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 848 if (ACPI_FAILURE(rv)) 849 goto out; 850 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 851 if (ACPI_FAILURE(rv)) { 852 goto out1; 853 } 854 855 bufn.Length = 1000; 856 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 857 resp = bufp.Pointer; 858 resc = bufc.Pointer; 859 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 860 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 861 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 862 resp = ACPI_NEXT_RESOURCE(resp); 863 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 864 break; 865 /* Found identical Id */ 866 resn->Type = resc->Type; 867 switch (resc->Type) { 868 case ACPI_RESOURCE_TYPE_IRQ: 869 memcpy(&resn->Data, &resp->Data, 870 sizeof(ACPI_RESOURCE_IRQ)); 871 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 872 irq->Interrupts[0] = 873 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 874 Interrupts[irq->InterruptCount-1]; 875 irq->InterruptCount = 1; 876 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 877 break; 878 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 879 memcpy(&resn->Data, &resp->Data, 880 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 881 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 882#if 0 883 /* 884 * XXX: Not duplicating the interrupt logic above 885 * because its not clear what it accomplishes. 886 */ 887 xirq->Interrupts[0] = 888 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 889 Interrupts[irq->NumberOfInterrupts-1]; 890 xirq->NumberOfInterrupts = 1; 891#endif 892 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 893 break; 894 case ACPI_RESOURCE_TYPE_IO: 895 memcpy(&resn->Data, &resp->Data, 896 sizeof(ACPI_RESOURCE_IO)); 897 resn->Length = resp->Length; 898 break; 899 default: 900 aprint_error_dev(acpi_softc->sc_dev, 901 "%s: invalid type %u\n", __func__, resc->Type); 902 rv = AE_BAD_DATA; 903 goto out2; 904 } 905 resc = ACPI_NEXT_RESOURCE(resc); 906 resn = ACPI_NEXT_RESOURCE(resn); 907 resp = ACPI_NEXT_RESOURCE(resp); 908 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 909 if (delta >= 910 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 911 bufn.Length *= 2; 912 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 913 M_ACPI, M_WAITOK); 914 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 915 delta); 916 } 917 } 918 919 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 920 aprint_error_dev(acpi_softc->sc_dev, 921 "%s: resc not exhausted\n", __func__); 922 rv = AE_BAD_DATA; 923 goto out3; 924 } 925 926 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 927 rv = AcpiSetCurrentResources(handle, &bufn); 928 929 if (ACPI_FAILURE(rv)) 930 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 931 "resources: %s\n", __func__, AcpiFormatException(rv)); 932 933out3: 934 free(bufn.Pointer, M_ACPI); 935out2: 936 ACPI_FREE(bufc.Pointer); 937out1: 938 ACPI_FREE(bufp.Pointer); 939out: 940 return rv; 941} 942#endif /* ACPI_ACTIVATE_DEV */ 943 944/* 945 * Device attachment. 946 */ 947static int 948acpi_rescan(device_t self, const char *ifattr, const int *locators) 949{ 950 struct acpi_softc *sc = device_private(self); 951 952 /* 953 * A two-pass scan for acpinodebus. 954 */ 955 if (ifattr_match(ifattr, "acpinodebus")) { 956 acpi_rescan_early(sc); 957 acpi_rescan_nodes(sc); 958 } 959 960 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 961 sc->sc_apmbus = config_found_ia(sc->sc_dev, 962 "acpiapmbus", NULL, NULL); 963 964 return 0; 965} 966 967static void 968acpi_rescan_early(struct acpi_softc *sc) 969{ 970 struct acpi_attach_args aa; 971 struct acpi_devnode *ad; 972 973 /* 974 * First scan for devices such as acpiec(4) that 975 * should be always attached before anything else. 976 * We want these devices to attach regardless of 977 * the device status and other restrictions. 978 */ 979 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 980 981 if (ad->ad_device != NULL) 982 continue; 983 984 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 985 continue; 986 987 if (acpi_match_hid(ad->ad_devinfo, acpi_early_ids) == 0) 988 continue; 989 990 aa.aa_node = ad; 991 aa.aa_iot = sc->sc_iot; 992 aa.aa_memt = sc->sc_memt; 993 aa.aa_pc = sc->sc_pc; 994 aa.aa_pciflags = sc->sc_pciflags; 995 aa.aa_ic = sc->sc_ic; 996 997 ad->ad_device = config_found_ia(sc->sc_dev, 998 "acpinodebus", &aa, acpi_print); 999 } 1000} 1001 1002static void 1003acpi_rescan_nodes(struct acpi_softc *sc) 1004{ 1005 struct acpi_attach_args aa; 1006 struct acpi_devnode *ad; 1007 ACPI_DEVICE_INFO *di; 1008 1009 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1010 1011 if (ad->ad_device != NULL) 1012 continue; 1013 1014 /* 1015 * There is a bug in ACPICA: it defines the type 1016 * of the scopes incorrectly for its own reasons. 1017 */ 1018 if (acpi_is_scope(ad) != false) 1019 continue; 1020 1021 di = ad->ad_devinfo; 1022 1023 /* 1024 * We only attach devices which are present, enabled, and 1025 * functioning properly. However, if a device is enabled, 1026 * it is decoding resources and we should claim these, 1027 * if possible. This requires changes to bus_space(9). 1028 * Note: there is a possible race condition, because _STA 1029 * may have changed since di->CurrentStatus was set. 1030 */ 1031 if (di->Type == ACPI_TYPE_DEVICE) { 1032 1033 if ((di->Valid & ACPI_VALID_STA) != 0 && 1034 (di->CurrentStatus & ACPI_STA_OK) != ACPI_STA_OK) 1035 continue; 1036 } 1037 1038 if (di->Type == ACPI_TYPE_POWER) 1039 continue; 1040 1041 if (acpi_match_hid(di, acpi_early_ids) != 0) 1042 continue; 1043 1044 if (acpi_match_hid(di, acpi_ignored_ids) != 0) 1045 continue; 1046 1047 aa.aa_node = ad; 1048 aa.aa_iot = sc->sc_iot; 1049 aa.aa_memt = sc->sc_memt; 1050 aa.aa_pc = sc->sc_pc; 1051 aa.aa_pciflags = sc->sc_pciflags; 1052 aa.aa_ic = sc->sc_ic; 1053 1054 ad->ad_device = config_found_ia(sc->sc_dev, 1055 "acpinodebus", &aa, acpi_print); 1056 } 1057} 1058 1059static void 1060acpi_rescan_capabilities(device_t self) 1061{ 1062 struct acpi_softc *sc = device_private(self); 1063 struct acpi_devnode *ad; 1064 ACPI_HANDLE tmp; 1065 ACPI_STATUS rv; 1066 1067 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1068 1069 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 1070 continue; 1071 1072 /* 1073 * Scan power resource capabilities. 1074 * 1075 * If any power states are supported, 1076 * at least _PR0 and _PR3 must be present. 1077 */ 1078 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 1079 1080 if (ACPI_SUCCESS(rv)) { 1081 ad->ad_flags |= ACPI_DEVICE_POWER; 1082 acpi_power_add(ad); 1083 } 1084 1085 /* 1086 * Scan wake-up capabilities. 1087 */ 1088 rv = AcpiGetHandle(ad->ad_handle, "_PRW", &tmp); 1089 1090 if (ACPI_SUCCESS(rv)) { 1091 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 1092 acpi_wakedev_add(ad); 1093 } 1094 1095 /* 1096 * Scan devices that are ejectable. 1097 */ 1098 rv = AcpiGetHandle(ad->ad_handle, "_EJ0", &tmp); 1099 1100 if (ACPI_SUCCESS(rv)) 1101 ad->ad_flags |= ACPI_DEVICE_EJECT; 1102 } 1103} 1104 1105static int 1106acpi_print(void *aux, const char *pnp) 1107{ 1108 struct acpi_attach_args *aa = aux; 1109 ACPI_STATUS rv; 1110 1111 if (pnp) { 1112 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1113 char *pnpstr = 1114 aa->aa_node->ad_devinfo->HardwareId.String; 1115 ACPI_BUFFER buf; 1116 1117 aprint_normal("%s (%s) ", aa->aa_node->ad_name, 1118 pnpstr); 1119 1120 rv = acpi_eval_struct(aa->aa_node->ad_handle, 1121 "_STR", &buf); 1122 if (ACPI_SUCCESS(rv)) { 1123 ACPI_OBJECT *obj = buf.Pointer; 1124 switch (obj->Type) { 1125 case ACPI_TYPE_STRING: 1126 aprint_normal("[%s] ", obj->String.Pointer); 1127 break; 1128 case ACPI_TYPE_BUFFER: 1129 aprint_normal("buffer %p ", obj->Buffer.Pointer); 1130 break; 1131 default: 1132 aprint_normal("type %u ",obj->Type); 1133 break; 1134 } 1135 ACPI_FREE(buf.Pointer); 1136 } 1137 else 1138 acpi_print_dev(pnpstr); 1139 1140 aprint_normal("at %s", pnp); 1141 } else if (aa->aa_node->ad_devinfo->Type != ACPI_TYPE_DEVICE) { 1142 aprint_normal("%s (ACPI Object Type '%s' " 1143 "[0x%02x]) ", aa->aa_node->ad_name, 1144 AcpiUtGetTypeName(aa->aa_node->ad_devinfo->Type), 1145 aa->aa_node->ad_devinfo->Type); 1146 aprint_normal("at %s", pnp); 1147 } else 1148 return 0; 1149 } else { 1150 aprint_normal(" (%s", aa->aa_node->ad_name); 1151 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1152 aprint_normal(", %s", aa->aa_node->ad_devinfo->HardwareId.String); 1153 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_UID) { 1154 const char *uid; 1155 1156 uid = aa->aa_node->ad_devinfo->UniqueId.String; 1157 if (uid[0] == '\0') 1158 uid = "<null>"; 1159 aprint_normal("-%s", uid); 1160 } 1161 } 1162 aprint_normal(")"); 1163 } 1164 1165 return UNCONF; 1166} 1167 1168/* 1169 * Notify. 1170 */ 1171static void 1172acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1173{ 1174 struct acpi_softc *sc = acpi_softc; 1175 struct acpi_devnode *ad; 1176 1177 KASSERT(sc != NULL); 1178 KASSERT(aux == NULL); 1179 KASSERT(acpi_active != 0); 1180 1181 if (acpi_suspended != 0) 1182 return; 1183 1184 /* 1185 * System: 0x00 - 0x7F. 1186 * Device: 0x80 - 0xFF. 1187 */ 1188 switch (event) { 1189 1190 case ACPI_NOTIFY_BUS_CHECK: 1191 case ACPI_NOTIFY_DEVICE_CHECK: 1192 case ACPI_NOTIFY_DEVICE_WAKE: 1193 case ACPI_NOTIFY_EJECT_REQUEST: 1194 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1195 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1196 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1197 case ACPI_NOTIFY_POWER_FAULT: 1198 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1199 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1200 case ACPI_NOTIFY_RESERVED: 1201 case ACPI_NOTIFY_LOCALITY_UPDATE: 1202 break; 1203 } 1204 1205 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1206 "%s (%p)\n", event, acpi_name(handle), handle)); 1207 1208 /* 1209 * We deliver notifications only to drivers 1210 * that have been succesfully attached and 1211 * that have registered a handler with us. 1212 * The opaque pointer is always the device_t. 1213 */ 1214 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1215 1216 if (ad->ad_device == NULL) 1217 continue; 1218 1219 if (ad->ad_notify == NULL) 1220 continue; 1221 1222 if (ad->ad_handle != handle) 1223 continue; 1224 1225 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1226 1227 return; 1228 } 1229 1230 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1231 "for %s (%p)\n", event, acpi_name(handle), handle); 1232} 1233 1234bool 1235acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1236{ 1237 struct acpi_softc *sc = acpi_softc; 1238 1239 KASSERT(sc != NULL); 1240 KASSERT(acpi_active != 0); 1241 1242 if (acpi_suspended != 0) 1243 goto fail; 1244 1245 if (ad == NULL || notify == NULL) 1246 goto fail; 1247 1248 ad->ad_notify = notify; 1249 1250 return true; 1251 1252fail: 1253 aprint_error_dev(sc->sc_dev, "failed to register notify " 1254 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1255 1256 return false; 1257} 1258 1259void 1260acpi_deregister_notify(struct acpi_devnode *ad) 1261{ 1262 1263 ad->ad_notify = NULL; 1264} 1265 1266/* 1267 * Fixed buttons. 1268 */ 1269static void 1270acpi_register_fixed_button(struct acpi_softc *sc, int event) 1271{ 1272 struct sysmon_pswitch *smpsw; 1273 ACPI_STATUS rv; 1274 int type; 1275 1276 switch (event) { 1277 1278 case ACPI_EVENT_POWER_BUTTON: 1279 1280 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1281 return; 1282 1283 type = PSWITCH_TYPE_POWER; 1284 smpsw = &sc->sc_smpsw_power; 1285 break; 1286 1287 case ACPI_EVENT_SLEEP_BUTTON: 1288 1289 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1290 return; 1291 1292 type = PSWITCH_TYPE_SLEEP; 1293 smpsw = &sc->sc_smpsw_sleep; 1294 break; 1295 1296 default: 1297 rv = AE_TYPE; 1298 goto fail; 1299 } 1300 1301 smpsw->smpsw_type = type; 1302 smpsw->smpsw_name = device_xname(sc->sc_dev); 1303 1304 if (sysmon_pswitch_register(smpsw) != 0) { 1305 rv = AE_ERROR; 1306 goto fail; 1307 } 1308 1309 rv = AcpiInstallFixedEventHandler(event, 1310 acpi_fixed_button_handler, smpsw); 1311 1312 if (ACPI_FAILURE(rv)) { 1313 sysmon_pswitch_unregister(smpsw); 1314 goto fail; 1315 } 1316 1317 aprint_debug_dev(sc->sc_dev, "fixed %s button present\n", 1318 (type != ACPI_EVENT_SLEEP_BUTTON) ? "power" : "sleep"); 1319 1320 return; 1321 1322fail: 1323 aprint_error_dev(sc->sc_dev, "failed to register " 1324 "fixed event: %s\n", AcpiFormatException(rv)); 1325} 1326 1327static void 1328acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1329{ 1330 struct sysmon_pswitch *smpsw; 1331 ACPI_STATUS rv; 1332 1333 switch (event) { 1334 1335 case ACPI_EVENT_POWER_BUTTON: 1336 smpsw = &sc->sc_smpsw_power; 1337 1338 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1339 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1340 return; 1341 } 1342 1343 break; 1344 1345 case ACPI_EVENT_SLEEP_BUTTON: 1346 smpsw = &sc->sc_smpsw_sleep; 1347 1348 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1349 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1350 return; 1351 } 1352 1353 break; 1354 1355 default: 1356 rv = AE_TYPE; 1357 goto fail; 1358 } 1359 1360 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1361 1362 if (ACPI_SUCCESS(rv)) { 1363 sysmon_pswitch_unregister(smpsw); 1364 return; 1365 } 1366 1367fail: 1368 aprint_error_dev(sc->sc_dev, "failed to deregister " 1369 "fixed event: %s\n", AcpiFormatException(rv)); 1370} 1371 1372static uint32_t 1373acpi_fixed_button_handler(void *context) 1374{ 1375 static const int handler = OSL_NOTIFY_HANDLER; 1376 struct sysmon_pswitch *smpsw = context; 1377 1378 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1379 1380 return ACPI_INTERRUPT_HANDLED; 1381} 1382 1383static void 1384acpi_fixed_button_pressed(void *context) 1385{ 1386 struct sysmon_pswitch *smpsw = context; 1387 1388 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1389 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1390 "power" : "sleep")); 1391 1392 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1393} 1394 1395/* 1396 * Sleep. 1397 */ 1398static void 1399acpi_sleep_init(struct acpi_softc *sc) 1400{ 1401 uint8_t a, b, i; 1402 ACPI_STATUS rv; 1403 1404 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1405 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1406 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1407 1408 /* 1409 * Evaluate supported sleep states. 1410 */ 1411 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1412 1413 rv = AcpiGetSleepTypeData(i, &a, &b); 1414 1415 if (ACPI_SUCCESS(rv)) 1416 sc->sc_sleepstates |= __BIT(i); 1417 } 1418} 1419 1420void 1421acpi_enter_sleep_state(int state) 1422{ 1423 struct acpi_softc *sc = acpi_softc; 1424 ACPI_STATUS rv; 1425 int err; 1426 1427 if (acpi_softc == NULL) 1428 return; 1429 1430 if (state == sc->sc_sleepstate) 1431 return; 1432 1433 if (state < ACPI_STATE_S0 || state > ACPI_STATE_S5) 1434 return; 1435 1436 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1437 1438 switch (state) { 1439 1440 case ACPI_STATE_S0: 1441 sc->sc_sleepstate = ACPI_STATE_S0; 1442 return; 1443 1444 case ACPI_STATE_S1: 1445 case ACPI_STATE_S2: 1446 case ACPI_STATE_S3: 1447 case ACPI_STATE_S4: 1448 1449 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1450 aprint_error_dev(sc->sc_dev, "sleep state " 1451 "S%d is not available\n", state); 1452 return; 1453 } 1454 1455 /* 1456 * Evaluate the _TTS method. This should be done before 1457 * pmf_system_suspend(9) and the evaluation of _PTS. 1458 * We should also re-evaluate this once we return to 1459 * S0 or if we abort the sleep state transition in the 1460 * middle (see ACPI 3.0, section 7.3.6). In reality, 1461 * however, the _TTS method is seldom seen in the field. 1462 */ 1463 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1464 1465 if (ACPI_SUCCESS(rv)) 1466 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1467 1468 if (state != ACPI_STATE_S1 && 1469 pmf_system_suspend(PMF_Q_NONE) != true) { 1470 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1471 break; 1472 } 1473 1474 /* 1475 * This will evaluate the _PTS and _SST methods, 1476 * but unlike the documentation claims, not _GTS, 1477 * which is evaluated in AcpiEnterSleepState(). 1478 * This must be called with interrupts enabled. 1479 */ 1480 rv = AcpiEnterSleepStatePrep(state); 1481 1482 if (ACPI_FAILURE(rv)) { 1483 aprint_error_dev(sc->sc_dev, "failed to prepare " 1484 "S%d: %s\n", state, AcpiFormatException(rv)); 1485 break; 1486 } 1487 1488 /* 1489 * After the _PTS method has been evaluated, we can 1490 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1491 */ 1492 acpi_wakedev_commit(sc, state); 1493 1494 sc->sc_sleepstate = state; 1495 1496 if (state == ACPI_STATE_S1) { 1497 1498 /* Just enter the state. */ 1499 acpi_md_OsDisableInterrupt(); 1500 rv = AcpiEnterSleepState(state); 1501 1502 if (ACPI_FAILURE(rv)) 1503 aprint_error_dev(sc->sc_dev, "failed to " 1504 "enter S1: %s\n", AcpiFormatException(rv)); 1505 1506 (void)AcpiLeaveSleepState(state); 1507 1508 } else { 1509 1510 err = acpi_md_sleep(state); 1511 1512 if (state == ACPI_STATE_S4) 1513 AcpiEnable(); 1514 1515 pmf_system_bus_resume(PMF_Q_NONE); 1516 (void)AcpiLeaveSleepState(state); 1517 pmf_system_resume(PMF_Q_NONE); 1518 } 1519 1520 break; 1521 1522 case ACPI_STATE_S5: 1523 1524 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1525 1526 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1527 1528 if (ACPI_FAILURE(rv)) { 1529 aprint_error_dev(sc->sc_dev, "failed to prepare " 1530 "S%d: %s\n", state, AcpiFormatException(rv)); 1531 break; 1532 } 1533 1534 DELAY(1000000); 1535 1536 sc->sc_sleepstate = state; 1537 acpi_md_OsDisableInterrupt(); 1538 1539 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1540 1541 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1542 1543 break; 1544 } 1545 1546 sc->sc_sleepstate = ACPI_STATE_S0; 1547 1548 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1549} 1550 1551/* 1552 * Sysctl. 1553 */ 1554SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1555{ 1556 const struct sysctlnode *mnode, *rnode, *snode; 1557 int err; 1558 1559 err = sysctl_createv(clog, 0, NULL, &rnode, 1560 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", 1561 NULL, NULL, 0, NULL, 0, 1562 CTL_HW, CTL_EOL); 1563 1564 if (err != 0) 1565 return; 1566 1567 err = sysctl_createv(clog, 0, &rnode, &rnode, 1568 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1569 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1570 NULL, 0, NULL, 0, 1571 CTL_CREATE, CTL_EOL); 1572 1573 if (err != 0) 1574 return; 1575 1576 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1577 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1578 "root", SYSCTL_DESCR("ACPI root pointer"), 1579 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1580 CTL_CREATE, CTL_EOL); 1581 1582 err = sysctl_createv(clog, 0, &rnode, &snode, 1583 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1584 "sleep", SYSCTL_DESCR("ACPI sleep"), 1585 NULL, 0, NULL, 0, 1586 CTL_CREATE, CTL_EOL); 1587 1588 if (err != 0) 1589 return; 1590 1591 (void)sysctl_createv(NULL, 0, &snode, NULL, 1592 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1593 "state", SYSCTL_DESCR("System sleep state"), 1594 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1595 CTL_CREATE, CTL_EOL); 1596 1597 (void)sysctl_createv(NULL, 0, &snode, NULL, 1598 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1599 "states", SYSCTL_DESCR("Supported sleep states"), 1600 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1601 CTL_CREATE, CTL_EOL); 1602 1603 /* 1604 * For the time being, machdep.sleep_state 1605 * is provided for backwards compatibility. 1606 */ 1607 err = sysctl_createv(NULL, 0, NULL, &mnode, 1608 CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep", 1609 NULL, NULL, 0, NULL, 0, 1610 CTL_MACHDEP, CTL_EOL); 1611 1612 if (err == 0) { 1613 1614 (void)sysctl_createv(NULL, 0, &mnode, NULL, 1615 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1616 "sleep_state", SYSCTL_DESCR("System sleep state"), 1617 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1618 CTL_CREATE, CTL_EOL); 1619 } 1620 1621 err = sysctl_createv(clog, 0, &rnode, &rnode, 1622 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1623 "stat", SYSCTL_DESCR("ACPI statistics"), 1624 NULL, 0, NULL, 0, 1625 CTL_CREATE, CTL_EOL); 1626 1627 if (err != 0) 1628 return; 1629 1630 (void)sysctl_createv(clog, 0, &rnode, NULL, 1631 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1632 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1633 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1634 CTL_CREATE, CTL_EOL); 1635 1636 (void)sysctl_createv(clog, 0, &rnode, NULL, 1637 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1638 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1639 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1640 CTL_CREATE, CTL_EOL); 1641 1642 (void)sysctl_createv(clog, 0, &rnode, NULL, 1643 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1644 "fixed", SYSCTL_DESCR("Number of fixed events"), 1645 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1646 CTL_CREATE, CTL_EOL); 1647 1648 (void)sysctl_createv(clog, 0, &rnode, NULL, 1649 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1650 "method", SYSCTL_DESCR("Number of methods executed"), 1651 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1652 CTL_CREATE, CTL_EOL); 1653 1654 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1655 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1656} 1657 1658static int 1659sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1660{ 1661 struct sysctlnode node; 1662 uint64_t t; 1663 int err, i; 1664 1665 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1666 t += AcpiFixedEventCount[i]; 1667 1668 node = *rnode; 1669 node.sysctl_data = &t; 1670 1671 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1672 1673 if (err || newp == NULL) 1674 return err; 1675 1676 return 0; 1677} 1678 1679static int 1680sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1681{ 1682 struct acpi_softc *sc = acpi_softc; 1683 struct sysctlnode node; 1684 int err, t; 1685 1686 if (acpi_softc == NULL) 1687 return ENOSYS; 1688 1689 node = *rnode; 1690 t = sc->sc_sleepstate; 1691 node.sysctl_data = &t; 1692 1693 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1694 1695 if (err || newp == NULL) 1696 return err; 1697 1698 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1699 return EINVAL; 1700 1701 acpi_enter_sleep_state(t); 1702 1703 return 0; 1704} 1705 1706static int 1707sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1708{ 1709 struct acpi_softc *sc = acpi_softc; 1710 struct sysctlnode node; 1711 char t[3 * 6 + 1]; 1712 int err; 1713 1714 if (acpi_softc == NULL) 1715 return ENOSYS; 1716 1717 (void)memset(t, '\0', sizeof(t)); 1718 1719 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1720 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1721 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1722 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1723 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1724 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1725 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1726 1727 node = *rnode; 1728 node.sysctl_data = &t; 1729 1730 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1731 1732 if (err || newp == NULL) 1733 return err; 1734 1735 return 0; 1736} 1737 1738/* 1739 * Tables. 1740 */ 1741ACPI_PHYSICAL_ADDRESS 1742acpi_OsGetRootPointer(void) 1743{ 1744 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1745 1746 /* 1747 * We let MD code handle this since there are multiple ways to do it: 1748 * 1749 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1750 * 1751 * IA-64: Use the EFI. 1752 */ 1753 PhysicalAddress = acpi_md_OsGetRootPointer(); 1754 1755 if (acpi_root_pointer == 0) 1756 acpi_root_pointer = PhysicalAddress; 1757 1758 return PhysicalAddress; 1759} 1760 1761static ACPI_TABLE_HEADER * 1762acpi_map_rsdt(void) 1763{ 1764 ACPI_PHYSICAL_ADDRESS paddr; 1765 ACPI_TABLE_RSDP *rsdp; 1766 1767 paddr = AcpiOsGetRootPointer(); 1768 1769 if (paddr == 0) 1770 return NULL; 1771 1772 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1773 1774 if (rsdp == NULL) 1775 return NULL; 1776 1777 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1778 paddr = rsdp->XsdtPhysicalAddress; 1779 else 1780 paddr = rsdp->RsdtPhysicalAddress; 1781 1782 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1783 1784 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1785} 1786 1787static void 1788acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1789{ 1790 1791 if (rsdt == NULL) 1792 return; 1793 1794 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1795} 1796 1797/* 1798 * XXX: Refactor to be a generic function that maps tables. 1799 */ 1800ACPI_STATUS 1801acpi_madt_map(void) 1802{ 1803 ACPI_STATUS rv; 1804 1805 if (madt_header != NULL) 1806 return AE_ALREADY_EXISTS; 1807 1808 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); 1809 1810 if (ACPI_FAILURE(rv)) 1811 return rv; 1812 1813 return AE_OK; 1814} 1815 1816void 1817acpi_madt_unmap(void) 1818{ 1819 madt_header = NULL; 1820} 1821 1822/* 1823 * XXX: Refactor to be a generic function that walks tables. 1824 */ 1825void 1826acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) 1827{ 1828 ACPI_SUBTABLE_HEADER *hdrp; 1829 char *madtend, *where; 1830 1831 madtend = (char *)madt_header + madt_header->Length; 1832 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); 1833 1834 while (where < madtend) { 1835 1836 hdrp = (ACPI_SUBTABLE_HEADER *)where; 1837 1838 if (ACPI_FAILURE(func(hdrp, aux))) 1839 break; 1840 1841 where += hdrp->Length; 1842 } 1843} 1844 1845/* 1846 * Miscellaneous. 1847 */ 1848static bool 1849acpi_is_scope(struct acpi_devnode *ad) 1850{ 1851 int i; 1852 1853 /* 1854 * Return true if the node is a root scope. 1855 */ 1856 if (ad->ad_parent == NULL) 1857 return false; 1858 1859 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1860 return false; 1861 1862 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1863 1864 if (acpi_scopes[i] == NULL) 1865 continue; 1866 1867 if (ad->ad_handle == acpi_scopes[i]) 1868 return true; 1869 } 1870 1871 return false; 1872} 1873 1874/* 1875 * ACPIVERBOSE. 1876 */ 1877void 1878acpi_load_verbose(void) 1879{ 1880 1881 if (acpi_verbose_loaded == 0) 1882 module_autoload("acpiverbose", MODULE_CLASS_MISC); 1883} 1884 1885void 1886acpi_print_verbose_stub(struct acpi_softc *sc) 1887{ 1888 1889 acpi_load_verbose(); 1890 1891 if (acpi_verbose_loaded != 0) 1892 acpi_print_verbose(sc); 1893} 1894 1895void 1896acpi_print_dev_stub(const char *pnpstr) 1897{ 1898 1899 acpi_load_verbose(); 1900 1901 if (acpi_verbose_loaded != 0) 1902 acpi_print_dev(pnpstr); 1903} 1904