acpi.c revision 1.251
1/* $NetBSD: acpi.c,v 1.251 2011/10/18 23:47:26 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 * 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 1.251 2011/10/18 23:47:26 jmcneill 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/kmem.h> 112#include <sys/malloc.h> 113#include <sys/module.h> 114#include <sys/mutex.h> 115#include <sys/sysctl.h> 116#include <sys/systm.h> 117#include <sys/timetc.h> 118 119#include <dev/acpi/acpireg.h> 120#include <dev/acpi/acpivar.h> 121#include <dev/acpi/acpi_osd.h> 122#include <dev/acpi/acpi_pci.h> 123#include <dev/acpi/acpi_power.h> 124#include <dev/acpi/acpi_timer.h> 125#include <dev/acpi/acpi_wakedev.h> 126 127#include <machine/acpi_machdep.h> 128 129#define _COMPONENT ACPI_BUS_COMPONENT 130ACPI_MODULE_NAME ("acpi") 131 132/* 133 * The acpi_active variable is set when the ACPI subsystem is active. 134 * Machine-dependent code may wish to skip other steps (such as attaching 135 * subsystems that ACPI supercedes) when ACPI is active. 136 */ 137int acpi_active = 0; 138int acpi_suspended = 0; 139int acpi_force_load = 0; 140int acpi_verbose_loaded = 0; 141 142struct acpi_softc *acpi_softc = NULL; 143static uint64_t acpi_root_pointer; 144extern kmutex_t acpi_interrupt_list_mtx; 145extern struct cfdriver acpi_cd; 146static ACPI_HANDLE acpi_scopes[4]; 147ACPI_TABLE_HEADER *madt_header; 148 149/* 150 * This structure provides a context for the ACPI 151 * namespace walk performed in acpi_build_tree(). 152 */ 153struct acpi_walkcontext { 154 struct acpi_softc *aw_sc; 155 struct acpi_devnode *aw_parent; 156}; 157 158/* 159 * Ignored HIDs. 160 */ 161static const char * const acpi_ignored_ids[] = { 162#if defined(i386) || defined(x86_64) 163 "ACPI0007", /* ACPI CPUs do not attach to acpi(4) */ 164 "PNP0000", /* AT interrupt controller is handled internally */ 165 "PNP0200", /* AT DMA controller is handled internally */ 166 "PNP0A??", /* PCI Busses are handled internally */ 167 "PNP0B00", /* AT RTC is handled internally */ 168 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 169#endif 170#if defined(x86_64) 171 "PNP0C04", /* FPU is handled internally */ 172#endif 173 NULL 174}; 175 176/* 177 * Devices that should be attached early. 178 */ 179static const char * const acpi_early_ids[] = { 180 "PNP0C09", /* acpiec(4) */ 181 NULL 182}; 183 184static int acpi_match(device_t, cfdata_t, void *); 185static int acpi_submatch(device_t, cfdata_t, const int *, void *); 186static void acpi_attach(device_t, device_t, void *); 187static int acpi_detach(device_t, int); 188static void acpi_childdet(device_t, device_t); 189static bool acpi_suspend(device_t, const pmf_qual_t *); 190static bool acpi_resume(device_t, const pmf_qual_t *); 191 192static void acpi_build_tree(struct acpi_softc *); 193static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, 194 void *, void **); 195static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t, 196 void *, void **); 197static void acpi_make_name(struct acpi_devnode *, uint32_t); 198 199static int acpi_rescan(device_t, const char *, const int *); 200static void acpi_rescan_early(struct acpi_softc *); 201static void acpi_rescan_nodes(struct acpi_softc *); 202static void acpi_rescan_capabilities(device_t); 203static int acpi_print(void *aux, const char *); 204 205static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); 206 207static void acpi_register_fixed_button(struct acpi_softc *, int); 208static void acpi_deregister_fixed_button(struct acpi_softc *, int); 209static uint32_t acpi_fixed_button_handler(void *); 210static void acpi_fixed_button_pressed(void *); 211 212static void acpi_sleep_init(struct acpi_softc *); 213 214static int sysctl_hw_acpi_fixedstats(SYSCTLFN_PROTO); 215static int sysctl_hw_acpi_sleepstate(SYSCTLFN_PROTO); 216static int sysctl_hw_acpi_sleepstates(SYSCTLFN_PROTO); 217 218static bool acpi_is_scope(struct acpi_devnode *); 219static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 220static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 221 222void acpi_print_verbose_stub(struct acpi_softc *); 223void acpi_print_dev_stub(const char *); 224 225static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **); 226ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE); 227 228void (*acpi_print_verbose)(struct acpi_softc *) = acpi_print_verbose_stub; 229void (*acpi_print_dev)(const char *) = acpi_print_dev_stub; 230 231CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 232 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 233 234/* 235 * Probe for ACPI support. 236 * 237 * This is called by the machine-dependent ACPI front-end. 238 * Note: this is not an autoconfiguration interface function. 239 */ 240int 241acpi_probe(void) 242{ 243 ACPI_TABLE_HEADER *rsdt; 244 ACPI_STATUS rv; 245 int quirks; 246 247 if (acpi_softc != NULL) 248 panic("%s: already probed", __func__); 249 250 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 251 252 /* 253 * Start up ACPICA. 254 */ 255 AcpiGbl_AllMethodsSerialized = false; 256 AcpiGbl_EnableInterpreterSlack = true; 257 258 rv = AcpiInitializeSubsystem(); 259 260 if (ACPI_FAILURE(rv)) { 261 aprint_error("%s: failed to initialize subsystem\n", __func__); 262 return 0; 263 } 264 265 /* 266 * Allocate space for RSDT/XSDT and DSDT, 267 * but allow resizing if more tables exist. 268 */ 269 rv = AcpiInitializeTables(NULL, 2, true); 270 271 if (ACPI_FAILURE(rv)) { 272 aprint_error("%s: failed to initialize tables\n", __func__); 273 goto fail; 274 } 275 276 rv = AcpiLoadTables(); 277 278 if (ACPI_FAILURE(rv)) { 279 aprint_error("%s: failed to load tables\n", __func__); 280 goto fail; 281 } 282 283 rsdt = acpi_map_rsdt(); 284 285 if (rsdt == NULL) { 286 aprint_error("%s: failed to map RSDT\n", __func__); 287 goto fail; 288 } 289 290 quirks = acpi_find_quirks(); 291 292 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_BROKEN) != 0) { 293 294 aprint_normal("ACPI: BIOS is listed as broken:\n"); 295 aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 296 "AslId <%4.4s,%08x>\n", rsdt->OemId, rsdt->OemTableId, 297 rsdt->OemRevision, rsdt->AslCompilerId, 298 rsdt->AslCompilerRevision); 299 aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n"); 300 301 acpi_unmap_rsdt(rsdt); 302 goto fail; 303 } 304 305 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_OLDBIOS) != 0) { 306 307 aprint_normal("ACPI: BIOS is too old (%s). " 308 "Set acpi_force_load to use.\n", 309 pmf_get_platform("firmware-date")); 310 311 acpi_unmap_rsdt(rsdt); 312 goto fail; 313 } 314 315 acpi_unmap_rsdt(rsdt); 316 317 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 318 319 if (ACPI_FAILURE(rv)) { 320 aprint_error("%s: failed to enable subsystem\n", __func__); 321 goto fail; 322 } 323 324 return 1; 325 326fail: 327 (void)AcpiTerminate(); 328 329 return 0; 330} 331 332void 333acpi_disable(void) 334{ 335 336 if (acpi_softc == NULL) 337 return; 338 339 KASSERT(acpi_active != 0); 340 341 if (AcpiGbl_FADT.SmiCommand != 0) 342 AcpiDisable(); 343} 344 345int 346acpi_check(device_t parent, const char *ifattr) 347{ 348 return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); 349} 350 351int 352acpi_reset(void) 353{ 354 struct acpi_softc *sc = acpi_softc; 355 ACPI_GENERIC_ADDRESS *ResetReg; 356 ACPI_PCI_ID PciId; 357 ACPI_STATUS status; 358 359 if (sc == NULL) 360 return ENXIO; 361 362 ResetReg = &AcpiGbl_FADT.ResetRegister; 363 364 /* Check if the reset register is supported */ 365 if (!(AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) || 366 !ResetReg->Address) { 367 return ENOENT; 368 } 369 370 switch (ResetReg->SpaceId) { 371 case ACPI_ADR_SPACE_PCI_CONFIG: 372 PciId.Segment = PciId.Bus = 0; 373 PciId.Device = ACPI_GAS_PCI_DEV(ResetReg->Address); 374 PciId.Function = ACPI_GAS_PCI_FUNC(ResetReg->Address); 375 status = AcpiOsWritePciConfiguration(&PciId, 376 ACPI_GAS_PCI_REGOFF(ResetReg->Address), 377 AcpiGbl_FADT.ResetValue, ResetReg->BitWidth); 378 break; 379 case ACPI_ADR_SPACE_SYSTEM_IO: 380 case ACPI_ADR_SPACE_SYSTEM_MEMORY: 381 status = AcpiReset(); 382 break; 383 default: 384 status = AE_TYPE; 385 break; 386 } 387 388 return ACPI_FAILURE(status) ? EIO : 0; 389} 390 391/* 392 * Autoconfiguration. 393 */ 394static int 395acpi_match(device_t parent, cfdata_t match, void *aux) 396{ 397 /* 398 * XXX: Nada; MD code has called acpi_probe(). 399 */ 400 return 1; 401} 402 403static int 404acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 405{ 406 struct cfattach *ca; 407 408 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 409 410 return (ca == &acpi_ca); 411} 412 413static void 414acpi_attach(device_t parent, device_t self, void *aux) 415{ 416 struct acpi_softc *sc = device_private(self); 417 struct acpibus_attach_args *aa = aux; 418 ACPI_TABLE_HEADER *rsdt; 419 ACPI_STATUS rv; 420 421 aprint_naive("\n"); 422 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 423 424 if (acpi_softc != NULL) 425 panic("%s: already attached", __func__); 426 427 rsdt = acpi_map_rsdt(); 428 429 if (rsdt == NULL) 430 aprint_error_dev(self, "X/RSDT: Not found\n"); 431 else { 432 aprint_verbose_dev(self, 433 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 434 rsdt->OemId, rsdt->OemTableId, 435 rsdt->OemRevision, 436 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 437 } 438 439 acpi_unmap_rsdt(rsdt); 440 441 sc->sc_dev = self; 442 sc->sc_root = NULL; 443 444 sc->sc_sleepstate = ACPI_STATE_S0; 445 sc->sc_quirks = acpi_find_quirks(); 446 447 sysmon_power_settype("acpi"); 448 449 sc->sc_iot = aa->aa_iot; 450 sc->sc_memt = aa->aa_memt; 451 sc->sc_pc = aa->aa_pc; 452 sc->sc_pciflags = aa->aa_pciflags; 453 sc->sc_ic = aa->aa_ic; 454 455 SIMPLEQ_INIT(&sc->ad_head); 456 457 acpi_softc = sc; 458 459 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) 460 aprint_error_dev(self, "couldn't establish power handler\n"); 461 462 /* 463 * Bring ACPICA on-line. 464 */ 465#define ACPI_ENABLE_PHASE1 \ 466 (ACPI_NO_HANDLER_INIT | ACPI_NO_EVENT_INIT) 467#define ACPI_ENABLE_PHASE2 \ 468 (ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE | \ 469 ACPI_NO_ADDRESS_SPACE_INIT) 470 471 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE1); 472 473 if (ACPI_FAILURE(rv)) 474 goto fail; 475 476 acpi_md_callback(); 477 478 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE2); 479 480 if (ACPI_FAILURE(rv)) 481 goto fail; 482 483 /* 484 * Early initialization of acpiec(4) via ECDT. 485 */ 486 (void)config_found_ia(self, "acpiecdtbus", aa, NULL); 487 488 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 489 490 if (ACPI_FAILURE(rv)) 491 goto fail; 492 493 /* 494 * Early initialization of the _PDC control method 495 * that may load additional SSDT tables dynamically. 496 */ 497 (void)acpi_md_pdc(); 498 499 /* 500 * Install global notify handlers. 501 */ 502 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 503 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 504 505 if (ACPI_FAILURE(rv)) 506 goto fail; 507 508 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 509 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 510 511 if (ACPI_FAILURE(rv)) 512 goto fail; 513 514 acpi_active = 1; 515 516 /* Show SCI interrupt. */ 517 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 518 AcpiGbl_FADT.SciInterrupt); 519 520 /* 521 * Install fixed-event handlers. 522 */ 523 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 524 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 525 526 acpitimer_init(sc); 527 528 /* 529 * Scan the namespace and build our device tree. 530 */ 531 acpi_build_tree(sc); 532 acpi_sleep_init(sc); 533 534#ifdef ACPI_DEBUG 535 acpi_debug_init(); 536#endif 537 538 /* 539 * Print debug information. 540 */ 541 acpi_print_verbose(sc); 542 543 return; 544 545fail: 546 aprint_error("%s: failed to initialize ACPI: %s\n", 547 __func__, AcpiFormatException(rv)); 548} 549 550/* 551 * XXX: This is incomplete. 552 */ 553static int 554acpi_detach(device_t self, int flags) 555{ 556 struct acpi_softc *sc = device_private(self); 557 ACPI_STATUS rv; 558 int rc; 559 560 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 561 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 562 563 if (ACPI_FAILURE(rv)) 564 return EBUSY; 565 566 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 567 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 568 569 if (ACPI_FAILURE(rv)) 570 return EBUSY; 571 572 if ((rc = config_detach_children(self, flags)) != 0) 573 return rc; 574 575 if ((rc = acpitimer_detach()) != 0) 576 return rc; 577 578 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 579 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 580 581 pmf_device_deregister(self); 582 583 acpi_softc = NULL; 584 585 return 0; 586} 587 588static void 589acpi_childdet(device_t self, device_t child) 590{ 591 struct acpi_softc *sc = device_private(self); 592 struct acpi_devnode *ad; 593 594 if (sc->sc_apmbus == child) 595 sc->sc_apmbus = NULL; 596 597 if (sc->sc_hpet == child) 598 sc->sc_hpet = NULL; 599 600 if (sc->sc_wdrt == child) 601 sc->sc_wdrt = NULL; 602 603 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 604 605 if (ad->ad_device == child) 606 ad->ad_device = NULL; 607 } 608} 609 610static bool 611acpi_suspend(device_t dv, const pmf_qual_t *qual) 612{ 613 614 acpi_suspended = 1; 615 616 return true; 617} 618 619static bool 620acpi_resume(device_t dv, const pmf_qual_t *qual) 621{ 622 623 acpi_suspended = 0; 624 625 return true; 626} 627 628/* 629 * Namespace scan. 630 */ 631static void 632acpi_build_tree(struct acpi_softc *sc) 633{ 634 struct acpi_walkcontext awc; 635 636 /* 637 * Get the root scope handles. 638 */ 639 KASSERT(__arraycount(acpi_scopes) == 4); 640 641 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 642 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 643 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 644 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 645 646 /* 647 * Make the root node. 648 */ 649 awc.aw_sc = sc; 650 awc.aw_parent = NULL; 651 652 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 653 654 KASSERT(sc->sc_root == NULL); 655 KASSERT(awc.aw_parent != NULL); 656 657 sc->sc_root = awc.aw_parent; 658 659 /* 660 * Build the internal namespace. 661 */ 662 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 663 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 664 665 /* 666 * Scan the internal namespace. 667 */ 668 (void)acpi_pcidev_scan(sc->sc_root); 669 (void)acpi_rescan(sc->sc_dev, NULL, NULL); 670 671 /* 672 * Update GPE information. 673 * 674 * Note that this must be called after 675 * all GPE handlers have been installed. 676 */ 677 (void)AcpiUpdateAllGpes(); 678 679 /* 680 * Defer rest of the configuration. 681 */ 682 (void)config_defer(sc->sc_dev, acpi_rescan_capabilities); 683} 684 685static ACPI_STATUS 686acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 687 void *context, void **status) 688{ 689 struct acpi_walkcontext *awc = context; 690 struct acpi_softc *sc = awc->aw_sc; 691 struct acpi_devnode *ad; 692 ACPI_DEVICE_INFO *devinfo; 693 ACPI_OBJECT_TYPE type; 694 ACPI_STATUS rv; 695 696 rv = AcpiGetObjectInfo(handle, &devinfo); 697 698 if (ACPI_FAILURE(rv)) 699 return AE_OK; /* Do not terminate the walk. */ 700 701 type = devinfo->Type; 702 703 switch (type) { 704 705 case ACPI_TYPE_DEVICE: 706 acpi_activate_device(handle, &devinfo); 707 case ACPI_TYPE_PROCESSOR: 708 case ACPI_TYPE_THERMAL: 709 case ACPI_TYPE_POWER: 710 711 ad = kmem_zalloc(sizeof(*ad), KM_NOSLEEP); 712 713 if (ad == NULL) 714 return AE_NO_MEMORY; 715 716 ad->ad_device = NULL; 717 ad->ad_notify = NULL; 718 ad->ad_pciinfo = NULL; 719 ad->ad_wakedev = NULL; 720 721 ad->ad_type = type; 722 ad->ad_handle = handle; 723 ad->ad_devinfo = devinfo; 724 725 ad->ad_root = sc->sc_dev; 726 ad->ad_parent = awc->aw_parent; 727 728 acpi_match_node_init(ad); 729 acpi_make_name(ad, devinfo->Name); 730 731 /* 732 * Identify wake GPEs from the _PRW. Note that 733 * AcpiUpdateAllGpes() must be called afterwards. 734 */ 735 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) 736 acpi_wakedev_init(ad); 737 738 SIMPLEQ_INIT(&ad->ad_child_head); 739 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 740 741 if (ad->ad_parent != NULL) { 742 743 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 744 ad, ad_child_list); 745 } 746 747 awc->aw_parent = ad; 748 } 749 750 return AE_OK; 751} 752 753static ACPI_STATUS 754acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 755 void *context, void **status) 756{ 757 struct acpi_walkcontext *awc = context; 758 759 KASSERT(awc != NULL); 760 KASSERT(awc->aw_parent != NULL); 761 762 if (handle == awc->aw_parent->ad_handle) 763 awc->aw_parent = awc->aw_parent->ad_parent; 764 765 return AE_OK; 766} 767 768static void 769acpi_make_name(struct acpi_devnode *ad, uint32_t name) 770{ 771 ACPI_NAME_UNION *anu; 772 int clear, i; 773 774 anu = (ACPI_NAME_UNION *)&name; 775 ad->ad_name[4] = '\0'; 776 777 for (i = 3, clear = 0; i >= 0; i--) { 778 779 if (clear == 0 && anu->Ascii[i] == '_') 780 ad->ad_name[i] = '\0'; 781 else { 782 ad->ad_name[i] = anu->Ascii[i]; 783 clear = 1; 784 } 785 } 786 787 if (ad->ad_name[0] == '\0') 788 ad->ad_name[0] = '_'; 789} 790 791/* 792 * Device attachment. 793 */ 794static int 795acpi_rescan(device_t self, const char *ifattr, const int *locators) 796{ 797 struct acpi_softc *sc = device_private(self); 798 struct acpi_attach_args aa; 799 800 /* 801 * Try to attach hpet(4) first via a specific table. 802 */ 803 aa.aa_memt = sc->sc_memt; 804 805 if (ifattr_match(ifattr, "acpihpetbus") && sc->sc_hpet == NULL) 806 sc->sc_hpet = config_found_ia(sc->sc_dev, 807 "acpihpetbus", &aa, NULL); 808 809 /* 810 * A two-pass scan for acpinodebus. 811 */ 812 if (ifattr_match(ifattr, "acpinodebus")) { 813 acpi_rescan_early(sc); 814 acpi_rescan_nodes(sc); 815 } 816 817 /* 818 * Attach APM emulation and acpiwdrt(4). 819 */ 820 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 821 sc->sc_apmbus = config_found_ia(sc->sc_dev, 822 "acpiapmbus", NULL, NULL); 823 824 if (ifattr_match(ifattr, "acpiwdrtbus") && sc->sc_wdrt == NULL) 825 sc->sc_wdrt = config_found_ia(sc->sc_dev, 826 "acpiwdrtbus", NULL, NULL); 827 828 return 0; 829} 830 831static void 832acpi_rescan_early(struct acpi_softc *sc) 833{ 834 struct acpi_attach_args aa; 835 struct acpi_devnode *ad; 836 837 /* 838 * First scan for devices such as acpiec(4) that 839 * should be always attached before anything else. 840 * We want these devices to attach regardless of 841 * the device status and other restrictions. 842 */ 843 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 844 845 if (ad->ad_device != NULL) 846 continue; 847 848 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 849 continue; 850 851 if (acpi_match_hid(ad->ad_devinfo, acpi_early_ids) == 0) 852 continue; 853 854 aa.aa_node = ad; 855 aa.aa_iot = sc->sc_iot; 856 aa.aa_memt = sc->sc_memt; 857 aa.aa_pc = sc->sc_pc; 858 aa.aa_pciflags = sc->sc_pciflags; 859 aa.aa_ic = sc->sc_ic; 860 861 ad->ad_device = config_found_ia(sc->sc_dev, 862 "acpinodebus", &aa, acpi_print); 863 } 864} 865 866static void 867acpi_rescan_nodes(struct acpi_softc *sc) 868{ 869 const char * const hpet_ids[] = { "PNP0103", NULL }; 870 struct acpi_attach_args aa; 871 struct acpi_devnode *ad; 872 ACPI_DEVICE_INFO *di; 873 874 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 875 876 if (ad->ad_device != NULL) 877 continue; 878 879 /* 880 * There is a bug in ACPICA: it defines the type 881 * of the scopes incorrectly for its own reasons. 882 */ 883 if (acpi_is_scope(ad) != false) 884 continue; 885 886 di = ad->ad_devinfo; 887 888 /* 889 * We only attach devices which are present, enabled, and 890 * functioning properly. However, if a device is enabled, 891 * it is decoding resources and we should claim these, 892 * if possible. This requires changes to bus_space(9). 893 * Note: there is a possible race condition, because _STA 894 * may have changed since di->CurrentStatus was set. 895 */ 896 if (di->Type == ACPI_TYPE_DEVICE) { 897 898 if ((di->Valid & ACPI_VALID_STA) != 0 && 899 (di->CurrentStatus & ACPI_STA_OK) != ACPI_STA_OK) 900 continue; 901 } 902 903 if (di->Type == ACPI_TYPE_POWER) 904 continue; 905 906 if (di->Type == ACPI_TYPE_PROCESSOR) 907 continue; 908 909 if (acpi_match_hid(di, acpi_early_ids) != 0) 910 continue; 911 912 if (acpi_match_hid(di, acpi_ignored_ids) != 0) 913 continue; 914 915 if (acpi_match_hid(di, hpet_ids) != 0 && sc->sc_hpet != NULL) 916 continue; 917 918 aa.aa_node = ad; 919 aa.aa_iot = sc->sc_iot; 920 aa.aa_memt = sc->sc_memt; 921 aa.aa_pc = sc->sc_pc; 922 aa.aa_pciflags = sc->sc_pciflags; 923 aa.aa_ic = sc->sc_ic; 924 925 ad->ad_device = config_found_ia(sc->sc_dev, 926 "acpinodebus", &aa, acpi_print); 927 } 928} 929 930static void 931acpi_rescan_capabilities(device_t self) 932{ 933 struct acpi_softc *sc = device_private(self); 934 struct acpi_devnode *ad; 935 ACPI_HANDLE tmp; 936 ACPI_STATUS rv; 937 938 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 939 940 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 941 continue; 942 943 /* 944 * Scan power resource capabilities. 945 * 946 * If any power states are supported, 947 * at least _PR0 and _PR3 must be present. 948 */ 949 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 950 951 if (ACPI_SUCCESS(rv)) { 952 ad->ad_flags |= ACPI_DEVICE_POWER; 953 acpi_power_add(ad); 954 } 955 956 /* 957 * Scan wake-up capabilities. 958 */ 959 if (ad->ad_wakedev != NULL) { 960 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 961 acpi_wakedev_add(ad); 962 } 963 964 /* 965 * Scan docking stations. 966 */ 967 rv = AcpiGetHandle(ad->ad_handle, "_DCK", &tmp); 968 969 if (ACPI_SUCCESS(rv)) 970 ad->ad_flags |= ACPI_DEVICE_DOCK; 971 972 /* 973 * Scan devices that are ejectable. 974 */ 975 rv = AcpiGetHandle(ad->ad_handle, "_EJ0", &tmp); 976 977 if (ACPI_SUCCESS(rv)) 978 ad->ad_flags |= ACPI_DEVICE_EJECT; 979 } 980} 981 982static int 983acpi_print(void *aux, const char *pnp) 984{ 985 struct acpi_attach_args *aa = aux; 986 struct acpi_devnode *ad; 987 const char *hid, *uid; 988 ACPI_DEVICE_INFO *di; 989 990 ad = aa->aa_node; 991 di = ad->ad_devinfo; 992 993 hid = di->HardwareId.String; 994 uid = di->UniqueId.String; 995 996 if (pnp != NULL) { 997 998 if (di->Type != ACPI_TYPE_DEVICE) { 999 1000 aprint_normal("%s (ACPI Object Type '%s') at %s", 1001 ad->ad_name, AcpiUtGetTypeName(ad->ad_type), pnp); 1002 1003 return UNCONF; 1004 } 1005 1006 if ((di->Valid & ACPI_VALID_HID) == 0 || hid == NULL) 1007 return 0; 1008 1009 aprint_normal("%s (%s) ", ad->ad_name, hid); 1010 acpi_print_dev(hid); 1011 aprint_normal("at %s", pnp); 1012 1013 return UNCONF; 1014 } 1015 1016 aprint_normal(" (%s", ad->ad_name); 1017 1018 if ((di->Valid & ACPI_VALID_HID) != 0 && hid != NULL) { 1019 1020 aprint_normal(", %s", hid); 1021 1022 if ((di->Valid & ACPI_VALID_UID) != 0 && uid != NULL) { 1023 1024 if (uid[0] == '\0') 1025 uid = "<null>"; 1026 1027 aprint_normal("-%s", uid); 1028 } 1029 } 1030 1031 aprint_normal(")"); 1032 1033 return UNCONF; 1034} 1035 1036/* 1037 * Notify. 1038 */ 1039static void 1040acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1041{ 1042 struct acpi_softc *sc = acpi_softc; 1043 struct acpi_devnode *ad; 1044 1045 KASSERT(sc != NULL); 1046 KASSERT(aux == NULL); 1047 KASSERT(acpi_active != 0); 1048 1049 if (acpi_suspended != 0) 1050 return; 1051 1052 /* 1053 * System: 0x00 - 0x7F. 1054 * Device: 0x80 - 0xFF. 1055 */ 1056 switch (event) { 1057 1058 case ACPI_NOTIFY_BUS_CHECK: 1059 case ACPI_NOTIFY_DEVICE_CHECK: 1060 case ACPI_NOTIFY_DEVICE_WAKE: 1061 case ACPI_NOTIFY_EJECT_REQUEST: 1062 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1063 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1064 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1065 case ACPI_NOTIFY_POWER_FAULT: 1066 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1067 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1068 case ACPI_NOTIFY_RESERVED: 1069 case ACPI_NOTIFY_LOCALITY_UPDATE: 1070 break; 1071 } 1072 1073 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1074 "%s (%p)\n", event, acpi_name(handle), handle)); 1075 1076 /* 1077 * We deliver notifications only to drivers 1078 * that have been successfully attached and 1079 * that have registered a handler with us. 1080 * The opaque pointer is always the device_t. 1081 */ 1082 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1083 1084 if (ad->ad_device == NULL) 1085 continue; 1086 1087 if (ad->ad_notify == NULL) 1088 continue; 1089 1090 if (ad->ad_handle != handle) 1091 continue; 1092 1093 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1094 1095 return; 1096 } 1097 1098 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1099 "for %s (%p)\n", event, acpi_name(handle), handle); 1100} 1101 1102bool 1103acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1104{ 1105 struct acpi_softc *sc = acpi_softc; 1106 1107 KASSERT(sc != NULL); 1108 KASSERT(acpi_active != 0); 1109 1110 if (acpi_suspended != 0) 1111 goto fail; 1112 1113 if (ad == NULL || notify == NULL) 1114 goto fail; 1115 1116 ad->ad_notify = notify; 1117 1118 return true; 1119 1120fail: 1121 aprint_error_dev(sc->sc_dev, "failed to register notify " 1122 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1123 1124 return false; 1125} 1126 1127void 1128acpi_deregister_notify(struct acpi_devnode *ad) 1129{ 1130 1131 ad->ad_notify = NULL; 1132} 1133 1134/* 1135 * Fixed buttons. 1136 */ 1137static void 1138acpi_register_fixed_button(struct acpi_softc *sc, int event) 1139{ 1140 struct sysmon_pswitch *smpsw; 1141 ACPI_STATUS rv; 1142 int type; 1143 1144 switch (event) { 1145 1146 case ACPI_EVENT_POWER_BUTTON: 1147 1148 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1149 return; 1150 1151 type = PSWITCH_TYPE_POWER; 1152 smpsw = &sc->sc_smpsw_power; 1153 break; 1154 1155 case ACPI_EVENT_SLEEP_BUTTON: 1156 1157 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1158 return; 1159 1160 type = PSWITCH_TYPE_SLEEP; 1161 smpsw = &sc->sc_smpsw_sleep; 1162 break; 1163 1164 default: 1165 rv = AE_TYPE; 1166 goto fail; 1167 } 1168 1169 smpsw->smpsw_type = type; 1170 smpsw->smpsw_name = device_xname(sc->sc_dev); 1171 1172 if (sysmon_pswitch_register(smpsw) != 0) { 1173 rv = AE_ERROR; 1174 goto fail; 1175 } 1176 1177 AcpiClearEvent(event); 1178 1179 rv = AcpiInstallFixedEventHandler(event, 1180 acpi_fixed_button_handler, smpsw); 1181 1182 if (ACPI_FAILURE(rv)) { 1183 sysmon_pswitch_unregister(smpsw); 1184 goto fail; 1185 } 1186 1187 aprint_debug_dev(sc->sc_dev, "fixed %s button present\n", 1188 (type != ACPI_EVENT_SLEEP_BUTTON) ? "power" : "sleep"); 1189 1190 return; 1191 1192fail: 1193 aprint_error_dev(sc->sc_dev, "failed to register " 1194 "fixed event %d: %s\n", event, AcpiFormatException(rv)); 1195} 1196 1197static void 1198acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1199{ 1200 struct sysmon_pswitch *smpsw; 1201 ACPI_STATUS rv; 1202 1203 switch (event) { 1204 1205 case ACPI_EVENT_POWER_BUTTON: 1206 smpsw = &sc->sc_smpsw_power; 1207 1208 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1209 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1210 return; 1211 } 1212 1213 break; 1214 1215 case ACPI_EVENT_SLEEP_BUTTON: 1216 smpsw = &sc->sc_smpsw_sleep; 1217 1218 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1219 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1220 return; 1221 } 1222 1223 break; 1224 1225 default: 1226 rv = AE_TYPE; 1227 goto fail; 1228 } 1229 1230 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1231 1232 if (ACPI_SUCCESS(rv)) { 1233 sysmon_pswitch_unregister(smpsw); 1234 return; 1235 } 1236 1237fail: 1238 aprint_error_dev(sc->sc_dev, "failed to deregister " 1239 "fixed event: %s\n", AcpiFormatException(rv)); 1240} 1241 1242static uint32_t 1243acpi_fixed_button_handler(void *context) 1244{ 1245 static const int handler = OSL_NOTIFY_HANDLER; 1246 struct sysmon_pswitch *smpsw = context; 1247 1248 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1249 1250 return ACPI_INTERRUPT_HANDLED; 1251} 1252 1253static void 1254acpi_fixed_button_pressed(void *context) 1255{ 1256 struct sysmon_pswitch *smpsw = context; 1257 1258 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1259 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1260 "power" : "sleep")); 1261 1262 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1263} 1264 1265/* 1266 * Sleep. 1267 */ 1268static void 1269acpi_sleep_init(struct acpi_softc *sc) 1270{ 1271 uint8_t a, b, i; 1272 ACPI_STATUS rv; 1273 1274 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1275 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1276 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1277 1278 /* 1279 * Evaluate supported sleep states. 1280 */ 1281 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1282 1283 rv = AcpiGetSleepTypeData(i, &a, &b); 1284 1285 if (ACPI_SUCCESS(rv)) 1286 sc->sc_sleepstates |= __BIT(i); 1287 } 1288} 1289 1290/* 1291 * Must be called with interrupts enabled. 1292 */ 1293void 1294acpi_enter_sleep_state(int state) 1295{ 1296 struct acpi_softc *sc = acpi_softc; 1297 ACPI_STATUS rv; 1298 int err; 1299 1300 if (acpi_softc == NULL) 1301 return; 1302 1303 if (state == sc->sc_sleepstate) 1304 return; 1305 1306 if (state < ACPI_STATE_S0 || state > ACPI_STATE_S5) 1307 return; 1308 1309 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1310 1311 switch (state) { 1312 1313 case ACPI_STATE_S0: 1314 sc->sc_sleepstate = ACPI_STATE_S0; 1315 return; 1316 1317 case ACPI_STATE_S1: 1318 case ACPI_STATE_S2: 1319 case ACPI_STATE_S3: 1320 case ACPI_STATE_S4: 1321 1322 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1323 aprint_error_dev(sc->sc_dev, "sleep state " 1324 "S%d is not available\n", state); 1325 return; 1326 } 1327 1328 /* 1329 * Evaluate the _TTS method. This should be done before 1330 * pmf_system_suspend(9) and the evaluation of _PTS. 1331 * We should also re-evaluate this once we return to 1332 * S0 or if we abort the sleep state transition in the 1333 * middle (see ACPI 3.0, section 7.3.6). In reality, 1334 * however, the _TTS method is seldom seen in the field. 1335 */ 1336 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1337 1338 if (ACPI_SUCCESS(rv)) 1339 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1340 1341 if (state != ACPI_STATE_S1 && 1342 pmf_system_suspend(PMF_Q_NONE) != true) { 1343 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1344 break; 1345 } 1346 1347 /* 1348 * This will evaluate the _PTS and _SST methods, 1349 * but unlike the documentation claims, not _GTS, 1350 * which is evaluated in AcpiEnterSleepState(). 1351 * This must be called with interrupts enabled. 1352 */ 1353 rv = AcpiEnterSleepStatePrep(state); 1354 1355 if (ACPI_FAILURE(rv)) { 1356 aprint_error_dev(sc->sc_dev, "failed to prepare " 1357 "S%d: %s\n", state, AcpiFormatException(rv)); 1358 break; 1359 } 1360 1361 /* 1362 * After the _PTS method has been evaluated, we can 1363 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1364 */ 1365 acpi_wakedev_commit(sc, state); 1366 1367 sc->sc_sleepstate = state; 1368 1369 if (state == ACPI_STATE_S1) { 1370 1371 /* 1372 * Before the transition to S1, CPU caches 1373 * must be flushed (see ACPI 4.0, 7.3.4.2). 1374 * 1375 * Note that interrupts must be off before 1376 * calling AcpiEnterSleepState(). Conversely, 1377 * AcpiLeaveSleepState() should always be 1378 * called with interrupts enabled. 1379 */ 1380 acpi_md_OsDisableInterrupt(); 1381 1382 ACPI_FLUSH_CPU_CACHE(); 1383 rv = AcpiEnterSleepState(state); 1384 1385 if (ACPI_FAILURE(rv)) 1386 aprint_error_dev(sc->sc_dev, "failed to " 1387 "enter S1: %s\n", AcpiFormatException(rv)); 1388 1389 /* 1390 * Clear fixed events and disable all GPEs before 1391 * interrupts are enabled. 1392 */ 1393 AcpiClearEvent(ACPI_EVENT_PMTIMER); 1394 AcpiClearEvent(ACPI_EVENT_GLOBAL); 1395 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON); 1396 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON); 1397 AcpiClearEvent(ACPI_EVENT_RTC); 1398 AcpiHwDisableAllGpes(); 1399 1400 acpi_md_OsEnableInterrupt(); 1401 rv = AcpiLeaveSleepState(state); 1402 1403 } else { 1404 1405 err = acpi_md_sleep(state); 1406 1407 if (state == ACPI_STATE_S4) 1408 AcpiEnable(); 1409 1410 (void)pmf_system_bus_resume(PMF_Q_NONE); 1411 (void)AcpiLeaveSleepState(state); 1412 (void)AcpiSetFirmwareWakingVector(0); 1413 (void)pmf_system_resume(PMF_Q_NONE); 1414 } 1415 1416 /* 1417 * No wake GPEs should be enabled at runtime. 1418 */ 1419 acpi_wakedev_commit(sc, ACPI_STATE_S0); 1420 break; 1421 1422 case ACPI_STATE_S5: 1423 1424 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1425 1426 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1427 1428 if (ACPI_FAILURE(rv)) { 1429 aprint_error_dev(sc->sc_dev, "failed to prepare " 1430 "S%d: %s\n", state, AcpiFormatException(rv)); 1431 break; 1432 } 1433 1434 (void)AcpiDisableAllGpes(); 1435 1436 DELAY(1000000); 1437 1438 sc->sc_sleepstate = state; 1439 acpi_md_OsDisableInterrupt(); 1440 1441 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1442 1443 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1444 1445 break; 1446 } 1447 1448 sc->sc_sleepstate = ACPI_STATE_S0; 1449 1450 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1451} 1452 1453/* 1454 * Sysctl. 1455 */ 1456SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1457{ 1458 const struct sysctlnode *mnode, *rnode, *snode; 1459 int err; 1460 1461 err = sysctl_createv(clog, 0, NULL, &rnode, 1462 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", 1463 NULL, NULL, 0, NULL, 0, 1464 CTL_HW, CTL_EOL); 1465 1466 if (err != 0) 1467 return; 1468 1469 err = sysctl_createv(clog, 0, &rnode, &rnode, 1470 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1471 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1472 NULL, 0, NULL, 0, 1473 CTL_CREATE, CTL_EOL); 1474 1475 if (err != 0) 1476 return; 1477 1478 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1479 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1480 "root", SYSCTL_DESCR("ACPI root pointer"), 1481 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1482 CTL_CREATE, CTL_EOL); 1483 1484 err = sysctl_createv(clog, 0, &rnode, &snode, 1485 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1486 "sleep", SYSCTL_DESCR("ACPI sleep"), 1487 NULL, 0, NULL, 0, 1488 CTL_CREATE, CTL_EOL); 1489 1490 if (err != 0) 1491 return; 1492 1493 (void)sysctl_createv(NULL, 0, &snode, NULL, 1494 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1495 "state", SYSCTL_DESCR("System sleep state"), 1496 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1497 CTL_CREATE, CTL_EOL); 1498 1499 (void)sysctl_createv(NULL, 0, &snode, NULL, 1500 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1501 "states", SYSCTL_DESCR("Supported sleep states"), 1502 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1503 CTL_CREATE, CTL_EOL); 1504 1505 /* 1506 * For the time being, machdep.sleep_state 1507 * is provided for backwards compatibility. 1508 */ 1509 err = sysctl_createv(NULL, 0, NULL, &mnode, 1510 CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep", 1511 NULL, NULL, 0, NULL, 0, 1512 CTL_MACHDEP, CTL_EOL); 1513 1514 if (err == 0) { 1515 1516 (void)sysctl_createv(NULL, 0, &mnode, NULL, 1517 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1518 "sleep_state", SYSCTL_DESCR("System sleep state"), 1519 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1520 CTL_CREATE, CTL_EOL); 1521 } 1522 1523 err = sysctl_createv(clog, 0, &rnode, &rnode, 1524 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1525 "stat", SYSCTL_DESCR("ACPI statistics"), 1526 NULL, 0, NULL, 0, 1527 CTL_CREATE, CTL_EOL); 1528 1529 if (err != 0) 1530 return; 1531 1532 (void)sysctl_createv(clog, 0, &rnode, NULL, 1533 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1534 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1535 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1536 CTL_CREATE, CTL_EOL); 1537 1538 (void)sysctl_createv(clog, 0, &rnode, NULL, 1539 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1540 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1541 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1542 CTL_CREATE, CTL_EOL); 1543 1544 (void)sysctl_createv(clog, 0, &rnode, NULL, 1545 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1546 "fixed", SYSCTL_DESCR("Number of fixed events"), 1547 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1548 CTL_CREATE, CTL_EOL); 1549 1550 (void)sysctl_createv(clog, 0, &rnode, NULL, 1551 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1552 "method", SYSCTL_DESCR("Number of methods executed"), 1553 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1554 CTL_CREATE, CTL_EOL); 1555 1556 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1557 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1558} 1559 1560static int 1561sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1562{ 1563 struct sysctlnode node; 1564 uint64_t t; 1565 int err, i; 1566 1567 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1568 t += AcpiFixedEventCount[i]; 1569 1570 node = *rnode; 1571 node.sysctl_data = &t; 1572 1573 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1574 1575 if (err || newp == NULL) 1576 return err; 1577 1578 return 0; 1579} 1580 1581static int 1582sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1583{ 1584 struct acpi_softc *sc = acpi_softc; 1585 struct sysctlnode node; 1586 int err, t; 1587 1588 if (acpi_softc == NULL) 1589 return ENOSYS; 1590 1591 node = *rnode; 1592 t = sc->sc_sleepstate; 1593 node.sysctl_data = &t; 1594 1595 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1596 1597 if (err || newp == NULL) 1598 return err; 1599 1600 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1601 return EINVAL; 1602 1603 acpi_enter_sleep_state(t); 1604 1605 return 0; 1606} 1607 1608static int 1609sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1610{ 1611 struct acpi_softc *sc = acpi_softc; 1612 struct sysctlnode node; 1613 char t[3 * 6 + 1]; 1614 int err; 1615 1616 if (acpi_softc == NULL) 1617 return ENOSYS; 1618 1619 (void)memset(t, '\0', sizeof(t)); 1620 1621 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1622 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1623 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1624 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1625 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1626 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1627 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1628 1629 node = *rnode; 1630 node.sysctl_data = &t; 1631 1632 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1633 1634 if (err || newp == NULL) 1635 return err; 1636 1637 return 0; 1638} 1639 1640/* 1641 * Tables. 1642 */ 1643ACPI_PHYSICAL_ADDRESS 1644acpi_OsGetRootPointer(void) 1645{ 1646 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1647 1648 /* 1649 * We let MD code handle this since there are multiple ways to do it: 1650 * 1651 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1652 * 1653 * IA-64: Use the EFI. 1654 */ 1655 PhysicalAddress = acpi_md_OsGetRootPointer(); 1656 1657 if (acpi_root_pointer == 0) 1658 acpi_root_pointer = PhysicalAddress; 1659 1660 return PhysicalAddress; 1661} 1662 1663static ACPI_TABLE_HEADER * 1664acpi_map_rsdt(void) 1665{ 1666 ACPI_PHYSICAL_ADDRESS paddr; 1667 ACPI_TABLE_RSDP *rsdp; 1668 1669 paddr = AcpiOsGetRootPointer(); 1670 1671 if (paddr == 0) 1672 return NULL; 1673 1674 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1675 1676 if (rsdp == NULL) 1677 return NULL; 1678 1679 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1680 paddr = rsdp->XsdtPhysicalAddress; 1681 else 1682 paddr = rsdp->RsdtPhysicalAddress; 1683 1684 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1685 1686 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1687} 1688 1689/* 1690 * XXX: Refactor to be a generic function that unmaps tables. 1691 */ 1692static void 1693acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1694{ 1695 1696 if (rsdt == NULL) 1697 return; 1698 1699 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1700} 1701 1702/* 1703 * XXX: Refactor to be a generic function that maps tables. 1704 */ 1705ACPI_STATUS 1706acpi_madt_map(void) 1707{ 1708 ACPI_STATUS rv; 1709 1710 if (madt_header != NULL) 1711 return AE_ALREADY_EXISTS; 1712 1713 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); 1714 1715 if (ACPI_FAILURE(rv)) 1716 return rv; 1717 1718 return AE_OK; 1719} 1720 1721void 1722acpi_madt_unmap(void) 1723{ 1724 madt_header = NULL; 1725} 1726 1727/* 1728 * XXX: Refactor to be a generic function that walks tables. 1729 */ 1730void 1731acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) 1732{ 1733 ACPI_SUBTABLE_HEADER *hdrp; 1734 char *madtend, *where; 1735 1736 madtend = (char *)madt_header + madt_header->Length; 1737 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); 1738 1739 while (where < madtend) { 1740 1741 hdrp = (ACPI_SUBTABLE_HEADER *)where; 1742 1743 if (ACPI_FAILURE(func(hdrp, aux))) 1744 break; 1745 1746 where += hdrp->Length; 1747 } 1748} 1749 1750/* 1751 * Miscellaneous. 1752 */ 1753static bool 1754acpi_is_scope(struct acpi_devnode *ad) 1755{ 1756 int i; 1757 1758 /* 1759 * Return true if the node is a root scope. 1760 */ 1761 if (ad->ad_parent == NULL) 1762 return false; 1763 1764 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1765 return false; 1766 1767 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1768 1769 if (acpi_scopes[i] == NULL) 1770 continue; 1771 1772 if (ad->ad_handle == acpi_scopes[i]) 1773 return true; 1774 } 1775 1776 return false; 1777} 1778 1779/* 1780 * ACPIVERBOSE. 1781 */ 1782void 1783acpi_load_verbose(void) 1784{ 1785 1786 if (acpi_verbose_loaded == 0) 1787 module_autoload("acpiverbose", MODULE_CLASS_MISC); 1788} 1789 1790void 1791acpi_print_verbose_stub(struct acpi_softc *sc) 1792{ 1793 1794 acpi_load_verbose(); 1795 1796 if (acpi_verbose_loaded != 0) 1797 acpi_print_verbose(sc); 1798} 1799 1800void 1801acpi_print_dev_stub(const char *pnpstr) 1802{ 1803 1804 acpi_load_verbose(); 1805 1806 if (acpi_verbose_loaded != 0) 1807 acpi_print_dev(pnpstr); 1808} 1809 1810MALLOC_DECLARE(M_ACPI); /* XXX: ACPI_ACTIVATE_DEV should use kmem(9). */ 1811 1812/* 1813 * ACPI_ACTIVATE_DEV. 1814 */ 1815static void 1816acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 1817{ 1818 1819#ifndef ACPI_ACTIVATE_DEV 1820 return; 1821} 1822#else 1823 static const int valid = ACPI_VALID_STA | ACPI_VALID_HID; 1824 ACPI_DEVICE_INFO *newdi; 1825 ACPI_STATUS rv; 1826 uint32_t old; 1827 1828 /* 1829 * If the device is valid and present, 1830 * but not enabled, try to activate it. 1831 */ 1832 if (((*di)->Valid & valid) != valid) 1833 return; 1834 1835 old = (*di)->CurrentStatus; 1836 1837 if ((old & (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED)) != 1838 ACPI_STA_DEVICE_PRESENT) 1839 return; 1840 1841 rv = acpi_allocate_resources(handle); 1842 1843 if (ACPI_FAILURE(rv)) 1844 goto fail; 1845 1846 rv = AcpiGetObjectInfo(handle, &newdi); 1847 1848 if (ACPI_FAILURE(rv)) 1849 goto fail; 1850 1851 ACPI_FREE(*di); 1852 *di = newdi; 1853 1854 aprint_verbose_dev(acpi_softc->sc_dev, 1855 "%s activated, STA 0x%08X -> STA 0x%08X\n", 1856 (*di)->HardwareId.String, old, (*di)->CurrentStatus); 1857 1858 return; 1859 1860fail: 1861 aprint_error_dev(acpi_softc->sc_dev, "failed to " 1862 "activate %s\n", (*di)->HardwareId.String); 1863} 1864 1865/* 1866 * XXX: This very incomplete. 1867 */ 1868ACPI_STATUS 1869acpi_allocate_resources(ACPI_HANDLE handle) 1870{ 1871 ACPI_BUFFER bufp, bufc, bufn; 1872 ACPI_RESOURCE *resp, *resc, *resn; 1873 ACPI_RESOURCE_IRQ *irq; 1874 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 1875 ACPI_STATUS rv; 1876 uint delta; 1877 1878 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 1879 if (ACPI_FAILURE(rv)) 1880 goto out; 1881 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 1882 if (ACPI_FAILURE(rv)) { 1883 goto out1; 1884 } 1885 1886 bufn.Length = 1000; 1887 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 1888 resp = bufp.Pointer; 1889 resc = bufc.Pointer; 1890 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 1891 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1892 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 1893 resp = ACPI_NEXT_RESOURCE(resp); 1894 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 1895 break; 1896 /* Found identical Id */ 1897 resn->Type = resc->Type; 1898 switch (resc->Type) { 1899 case ACPI_RESOURCE_TYPE_IRQ: 1900 memcpy(&resn->Data, &resp->Data, 1901 sizeof(ACPI_RESOURCE_IRQ)); 1902 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 1903 irq->Interrupts[0] = 1904 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 1905 Interrupts[irq->InterruptCount-1]; 1906 irq->InterruptCount = 1; 1907 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 1908 break; 1909 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 1910 memcpy(&resn->Data, &resp->Data, 1911 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 1912 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 1913#if 0 1914 /* 1915 * XXX: Not duplicating the interrupt logic above 1916 * because its not clear what it accomplishes. 1917 */ 1918 xirq->Interrupts[0] = 1919 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 1920 Interrupts[irq->NumberOfInterrupts-1]; 1921 xirq->NumberOfInterrupts = 1; 1922#endif 1923 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 1924 break; 1925 case ACPI_RESOURCE_TYPE_IO: 1926 memcpy(&resn->Data, &resp->Data, 1927 sizeof(ACPI_RESOURCE_IO)); 1928 resn->Length = resp->Length; 1929 break; 1930 default: 1931 aprint_error_dev(acpi_softc->sc_dev, 1932 "%s: invalid type %u\n", __func__, resc->Type); 1933 rv = AE_BAD_DATA; 1934 goto out2; 1935 } 1936 resc = ACPI_NEXT_RESOURCE(resc); 1937 resn = ACPI_NEXT_RESOURCE(resn); 1938 resp = ACPI_NEXT_RESOURCE(resp); 1939 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 1940 if (delta >= 1941 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 1942 bufn.Length *= 2; 1943 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 1944 M_ACPI, M_WAITOK); 1945 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 1946 delta); 1947 } 1948 } 1949 1950 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1951 aprint_error_dev(acpi_softc->sc_dev, 1952 "%s: resc not exhausted\n", __func__); 1953 rv = AE_BAD_DATA; 1954 goto out3; 1955 } 1956 1957 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 1958 rv = AcpiSetCurrentResources(handle, &bufn); 1959 1960 if (ACPI_FAILURE(rv)) 1961 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 1962 "resources: %s\n", __func__, AcpiFormatException(rv)); 1963 1964out3: 1965 free(bufn.Pointer, M_ACPI); 1966out2: 1967 ACPI_FREE(bufc.Pointer); 1968out1: 1969 ACPI_FREE(bufp.Pointer); 1970out: 1971 return rv; 1972} 1973 1974#endif /* ACPI_ACTIVATE_DEV */ 1975