acpi.c revision 1.273
1/* $NetBSD: acpi.c,v 1.273 2018/10/12 21:20:54 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 1.273 2018/10/12 21:20:54 jmcneill Exp $"); 104 105#include "pci.h" 106#include "opt_acpi.h" 107#include "opt_pcifixup.h" 108 109#include <sys/param.h> 110#include <sys/device.h> 111#include <sys/kernel.h> 112#include <sys/kmem.h> 113#include <sys/malloc.h> 114#include <sys/module.h> 115#include <sys/mutex.h> 116#include <sys/sysctl.h> 117#include <sys/systm.h> 118#include <sys/timetc.h> 119 120#include <dev/acpi/acpireg.h> 121#include <dev/acpi/acpivar.h> 122#include <dev/acpi/acpi_mcfg.h> 123#include <dev/acpi/acpi_osd.h> 124#include <dev/acpi/acpi_pci.h> 125#include <dev/acpi/acpi_power.h> 126#include <dev/acpi/acpi_timer.h> 127#include <dev/acpi/acpi_wakedev.h> 128 129#include <machine/acpi_machdep.h> 130 131#include "ioconf.h" 132 133#define _COMPONENT ACPI_BUS_COMPONENT 134ACPI_MODULE_NAME ("acpi") 135 136/* 137 * The acpi_active variable is set when the ACPI subsystem is active. 138 * Machine-dependent code may wish to skip other steps (such as attaching 139 * subsystems that ACPI supercedes) when ACPI is active. 140 */ 141int acpi_active = 0; 142int acpi_suspended = 0; 143int acpi_force_load = 0; 144int acpi_verbose_loaded = 0; 145 146struct acpi_softc *acpi_softc = NULL; 147static uint64_t acpi_root_pointer; 148extern kmutex_t acpi_interrupt_list_mtx; 149static ACPI_HANDLE acpi_scopes[4]; 150ACPI_TABLE_HEADER *madt_header; 151ACPI_TABLE_HEADER *gtdt_header; 152 153/* 154 * This structure provides a context for the ACPI 155 * namespace walk performed in acpi_build_tree(). 156 */ 157struct acpi_walkcontext { 158 struct acpi_softc *aw_sc; 159 struct acpi_devnode *aw_parent; 160}; 161 162/* 163 * Ignored HIDs. 164 */ 165static const char * const acpi_ignored_ids[] = { 166#if defined(i386) || defined(x86_64) 167 "ACPI0007", /* ACPI CPUs do not attach to acpi(4) */ 168 "PNP0000", /* AT interrupt controller is handled internally */ 169 "PNP0200", /* AT DMA controller is handled internally */ 170 "PNP0A??", /* PCI Busses are handled internally */ 171 "PNP0B00", /* AT RTC is handled internally */ 172 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 173#endif 174#if defined(x86_64) 175 "PNP0C04", /* FPU is handled internally */ 176#endif 177 NULL 178}; 179 180/* 181 * Devices that should be attached early. 182 */ 183static const char * const acpi_early_ids[] = { 184 "PNP0C09", /* acpiec(4) */ 185 NULL 186}; 187 188static int acpi_match(device_t, cfdata_t, void *); 189static int acpi_submatch(device_t, cfdata_t, const int *, void *); 190static void acpi_attach(device_t, device_t, void *); 191static int acpi_detach(device_t, int); 192static void acpi_childdet(device_t, device_t); 193static bool acpi_suspend(device_t, const pmf_qual_t *); 194static bool acpi_resume(device_t, const pmf_qual_t *); 195 196static void acpi_build_tree(struct acpi_softc *); 197static void acpi_config_tree(struct acpi_softc *); 198static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, 199 void *, void **); 200static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t, 201 void *, void **); 202static void acpi_make_name(struct acpi_devnode *, uint32_t); 203 204static int acpi_rescan(device_t, const char *, const int *); 205static void acpi_rescan_early(struct acpi_softc *); 206static void acpi_rescan_nodes(struct acpi_softc *); 207static void acpi_rescan_capabilities(device_t); 208static int acpi_print(void *aux, const char *); 209 210static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); 211 212static void acpi_register_fixed_button(struct acpi_softc *, int); 213static void acpi_deregister_fixed_button(struct acpi_softc *, int); 214static uint32_t acpi_fixed_button_handler(void *); 215static void acpi_fixed_button_pressed(void *); 216 217static void acpi_sleep_init(struct acpi_softc *); 218 219static int sysctl_hw_acpi_fixedstats(SYSCTLFN_PROTO); 220static int sysctl_hw_acpi_sleepstate(SYSCTLFN_PROTO); 221static int sysctl_hw_acpi_sleepstates(SYSCTLFN_PROTO); 222 223static bool acpi_is_scope(struct acpi_devnode *); 224static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 225static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 226 227void acpi_print_verbose_stub(struct acpi_softc *); 228void acpi_print_dev_stub(const char *); 229 230static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **); 231ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE); 232 233void (*acpi_print_verbose)(struct acpi_softc *) = acpi_print_verbose_stub; 234void (*acpi_print_dev)(const char *) = acpi_print_dev_stub; 235 236CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 237 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 238 239/* 240 * Probe for ACPI support. 241 * 242 * This is called by the machine-dependent ACPI front-end. 243 * Note: this is not an autoconfiguration interface function. 244 */ 245int 246acpi_probe(void) 247{ 248 ACPI_TABLE_HEADER *rsdt; 249 ACPI_STATUS rv; 250 int quirks; 251 252 if (acpi_softc != NULL) 253 panic("%s: already probed", __func__); 254 255 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 256 257 /* 258 * Start up ACPICA. 259 */ 260 AcpiGbl_EnableInterpreterSlack = true; 261 262 rv = AcpiInitializeSubsystem(); 263 264 if (ACPI_FAILURE(rv)) { 265 aprint_error("%s: failed to initialize subsystem\n", __func__); 266 return 0; 267 } 268 269 /* 270 * Allocate space for RSDT/XSDT and DSDT, 271 * but allow resizing if more tables exist. 272 */ 273 rv = AcpiInitializeTables(NULL, 2, true); 274 275 if (ACPI_FAILURE(rv)) { 276 aprint_error("%s: failed to initialize tables\n", __func__); 277 goto fail; 278 } 279 280 rv = AcpiLoadTables(); 281 282 if (ACPI_FAILURE(rv)) { 283 aprint_error("%s: failed to load tables\n", __func__); 284 goto fail; 285 } 286 287 rsdt = acpi_map_rsdt(); 288 289 if (rsdt == NULL) { 290 aprint_error("%s: failed to map RSDT\n", __func__); 291 goto fail; 292 } 293 294 quirks = acpi_find_quirks(); 295 296 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_BROKEN) != 0) { 297 298 aprint_normal("ACPI: BIOS is listed as broken:\n"); 299 aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 300 "AslId <%4.4s,%08x>\n", rsdt->OemId, rsdt->OemTableId, 301 rsdt->OemRevision, rsdt->AslCompilerId, 302 rsdt->AslCompilerRevision); 303 aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n"); 304 305 acpi_unmap_rsdt(rsdt); 306 goto fail; 307 } 308 309 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_OLDBIOS) != 0) { 310 311 aprint_normal("ACPI: BIOS is too old (%s). " 312 "Set acpi_force_load to use.\n", 313 pmf_get_platform("bios-date")); 314 315 acpi_unmap_rsdt(rsdt); 316 goto fail; 317 } 318 319 acpi_unmap_rsdt(rsdt); 320 321 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 322 323 if (ACPI_FAILURE(rv)) { 324 aprint_error("%s: failed to enable subsystem\n", __func__); 325 goto fail; 326 } 327 328 return 1; 329 330fail: 331 (void)AcpiTerminate(); 332 333 return 0; 334} 335 336void 337acpi_disable(void) 338{ 339 340 if (acpi_softc == NULL) 341 return; 342 343 KASSERT(acpi_active != 0); 344 345 if (AcpiGbl_FADT.SmiCommand != 0) 346 AcpiDisable(); 347} 348 349int 350acpi_check(device_t parent, const char *ifattr) 351{ 352 return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); 353} 354 355int 356acpi_reset(void) 357{ 358 struct acpi_softc *sc = acpi_softc; 359 ACPI_GENERIC_ADDRESS *ResetReg; 360 ACPI_PCI_ID PciId; 361 ACPI_STATUS status; 362 363 if (sc == NULL) 364 return ENXIO; 365 366 ResetReg = &AcpiGbl_FADT.ResetRegister; 367 368 /* Check if the reset register is supported */ 369 if (!(AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) || 370 !ResetReg->Address) { 371 return ENOENT; 372 } 373 374 switch (ResetReg->SpaceId) { 375 case ACPI_ADR_SPACE_PCI_CONFIG: 376 PciId.Segment = PciId.Bus = 0; 377 PciId.Device = ACPI_GAS_PCI_DEV(ResetReg->Address); 378 PciId.Function = ACPI_GAS_PCI_FUNC(ResetReg->Address); 379 status = AcpiOsWritePciConfiguration(&PciId, 380 ACPI_GAS_PCI_REGOFF(ResetReg->Address), 381 AcpiGbl_FADT.ResetValue, ResetReg->BitWidth); 382 break; 383 case ACPI_ADR_SPACE_SYSTEM_IO: 384 case ACPI_ADR_SPACE_SYSTEM_MEMORY: 385 status = AcpiReset(); 386 break; 387 default: 388 status = AE_TYPE; 389 break; 390 } 391 392 return ACPI_FAILURE(status) ? EIO : 0; 393} 394 395/* 396 * Autoconfiguration. 397 */ 398static int 399acpi_match(device_t parent, cfdata_t match, void *aux) 400{ 401 /* 402 * XXX: Nada; MD code has called acpi_probe(). 403 */ 404 return 1; 405} 406 407static int 408acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 409{ 410 struct cfattach *ca; 411 412 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 413 414 return (ca == &acpi_ca); 415} 416 417static void 418acpi_attach(device_t parent, device_t self, void *aux) 419{ 420 struct acpi_softc *sc = device_private(self); 421 struct acpibus_attach_args *aa = aux; 422 ACPI_TABLE_HEADER *rsdt; 423 ACPI_STATUS rv; 424 425 aprint_naive("\n"); 426 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 427 428 if (acpi_softc != NULL) 429 panic("%s: already attached", __func__); 430 431 rsdt = acpi_map_rsdt(); 432 433 if (rsdt == NULL) 434 aprint_error_dev(self, "X/RSDT: Not found\n"); 435 else { 436 aprint_verbose_dev(self, 437 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 438 rsdt->OemId, rsdt->OemTableId, 439 rsdt->OemRevision, 440 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 441 } 442 443 acpi_unmap_rsdt(rsdt); 444 445 sc->sc_dev = self; 446 sc->sc_root = NULL; 447 448 sc->sc_sleepstate = ACPI_STATE_S0; 449 sc->sc_quirks = acpi_find_quirks(); 450 451 sysmon_power_settype("acpi"); 452 453 sc->sc_iot = aa->aa_iot; 454 sc->sc_memt = aa->aa_memt; 455 sc->sc_pc = aa->aa_pc; 456 sc->sc_pciflags = aa->aa_pciflags; 457 sc->sc_ic = aa->aa_ic; 458 sc->sc_dmat = aa->aa_dmat; 459 sc->sc_dmat64 = aa->aa_dmat64; 460 461 SIMPLEQ_INIT(&sc->ad_head); 462 463 acpi_softc = sc; 464 465 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) 466 aprint_error_dev(self, "couldn't establish power handler\n"); 467 468 /* 469 * Bring ACPICA on-line. 470 */ 471 472 rv = AcpiEnableSubsystem(ACPI_FULL_INITIALIZATION); 473 474 if (ACPI_FAILURE(rv)) 475 goto fail; 476 477 /* 478 * Early initialization of acpiec(4) via ECDT. 479 */ 480 (void)config_found_ia(self, "acpiecdtbus", aa, NULL); 481 482 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 483 484 if (ACPI_FAILURE(rv)) 485 goto fail; 486 487 /* 488 * Scan the namespace and build our device tree. 489 */ 490 acpi_build_tree(sc); 491 492#if NPCI > 0 493 /* 494 * Probe MCFG table 495 */ 496 acpimcfg_probe(sc); 497#endif 498 499 acpi_md_callback(sc); 500 501 /* 502 * Early initialization of the _PDC control method 503 * that may load additional SSDT tables dynamically. 504 */ 505 (void)acpi_md_pdc(); 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 acpi_config_tree(sc); 536 acpi_sleep_init(sc); 537 538#ifdef ACPI_DEBUG 539 acpi_debug_init(); 540#endif 541 542 /* 543 * Print debug information. 544 */ 545 acpi_print_verbose(sc); 546 547 return; 548 549fail: 550 aprint_error("%s: failed to initialize ACPI: %s\n", 551 __func__, AcpiFormatException(rv)); 552} 553 554/* 555 * XXX: This is incomplete. 556 */ 557static int 558acpi_detach(device_t self, int flags) 559{ 560 struct acpi_softc *sc = device_private(self); 561 ACPI_STATUS rv; 562 int rc; 563 564 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 565 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 566 567 if (ACPI_FAILURE(rv)) 568 return EBUSY; 569 570 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 571 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 572 573 if (ACPI_FAILURE(rv)) 574 return EBUSY; 575 576 if ((rc = config_detach_children(self, flags)) != 0) 577 return rc; 578 579 if ((rc = acpitimer_detach()) != 0) 580 return rc; 581 582 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 583 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 584 585 pmf_device_deregister(self); 586 587 acpi_softc = NULL; 588 589 return 0; 590} 591 592static void 593acpi_childdet(device_t self, device_t child) 594{ 595 struct acpi_softc *sc = device_private(self); 596 struct acpi_devnode *ad; 597 598 if (sc->sc_apmbus == child) 599 sc->sc_apmbus = NULL; 600 601 if (sc->sc_hpet == child) 602 sc->sc_hpet = NULL; 603 604 if (sc->sc_wdrt == child) 605 sc->sc_wdrt = NULL; 606 607 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 608 609 if (ad->ad_device == child) 610 ad->ad_device = NULL; 611 } 612} 613 614static bool 615acpi_suspend(device_t dv, const pmf_qual_t *qual) 616{ 617 618 acpi_suspended = 1; 619 620 return true; 621} 622 623static bool 624acpi_resume(device_t dv, const pmf_qual_t *qual) 625{ 626 627 acpi_suspended = 0; 628 629 return true; 630} 631 632/* 633 * Namespace scan. 634 */ 635static void 636acpi_build_tree(struct acpi_softc *sc) 637{ 638 struct acpi_walkcontext awc; 639 640 /* 641 * Get the root scope handles. 642 */ 643 KASSERT(__arraycount(acpi_scopes) == 4); 644 645 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 646 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 647 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 648 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 649 650 /* 651 * Make the root node. 652 */ 653 awc.aw_sc = sc; 654 awc.aw_parent = NULL; 655 656 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 657 658 KASSERT(sc->sc_root == NULL); 659 KASSERT(awc.aw_parent != NULL); 660 661 sc->sc_root = awc.aw_parent; 662 663 /* 664 * Build the internal namespace. 665 */ 666 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 667 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 668 669 /* 670 * Scan the internal namespace. 671 */ 672 (void)acpi_pcidev_scan(sc->sc_root); 673} 674 675static void 676acpi_config_tree(struct acpi_softc *sc) 677{ 678 679 /* 680 * Configure all everything found "at acpi?". 681 */ 682 (void)acpi_rescan(sc->sc_dev, NULL, NULL); 683 684 /* 685 * Update GPE information. 686 * 687 * Note that this must be called after 688 * all GPE handlers have been installed. 689 */ 690 (void)AcpiUpdateAllGpes(); 691 692 /* 693 * Defer rest of the configuration. 694 */ 695 (void)config_defer(sc->sc_dev, acpi_rescan_capabilities); 696} 697 698static ACPI_STATUS 699acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 700 void *context, void **status) 701{ 702 struct acpi_walkcontext *awc = context; 703 struct acpi_softc *sc = awc->aw_sc; 704 struct acpi_devnode *ad; 705 ACPI_DEVICE_INFO *devinfo; 706 ACPI_OBJECT_TYPE type; 707 ACPI_STATUS rv; 708 709 rv = AcpiGetObjectInfo(handle, &devinfo); 710 711 if (ACPI_FAILURE(rv)) 712 return AE_OK; /* Do not terminate the walk. */ 713 714 type = devinfo->Type; 715 716 switch (type) { 717 718 case ACPI_TYPE_DEVICE: 719 acpi_activate_device(handle, &devinfo); 720 /* FALLTHROUGH */ 721 722 case ACPI_TYPE_PROCESSOR: 723 case ACPI_TYPE_THERMAL: 724 case ACPI_TYPE_POWER: 725 726 ad = kmem_zalloc(sizeof(*ad), KM_SLEEP); 727 728 ad->ad_device = NULL; 729 ad->ad_notify = NULL; 730 ad->ad_pciinfo = NULL; 731 ad->ad_wakedev = 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 acpi_match_node_init(ad); 741 acpi_make_name(ad, devinfo->Name); 742 743 /* 744 * Identify wake GPEs from the _PRW. Note that 745 * AcpiUpdateAllGpes() must be called afterwards. 746 */ 747 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) 748 acpi_wakedev_init(ad); 749 750 SIMPLEQ_INIT(&ad->ad_child_head); 751 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 752 753 if (ad->ad_parent != NULL) { 754 755 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 756 ad, ad_child_list); 757 } 758 759 awc->aw_parent = ad; 760 } 761 762 return AE_OK; 763} 764 765static ACPI_STATUS 766acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 767 void *context, void **status) 768{ 769 struct acpi_walkcontext *awc = context; 770 771 KASSERT(awc != NULL); 772 KASSERT(awc->aw_parent != NULL); 773 774 if (handle == awc->aw_parent->ad_handle) 775 awc->aw_parent = awc->aw_parent->ad_parent; 776 777 return AE_OK; 778} 779 780static void 781acpi_make_name(struct acpi_devnode *ad, uint32_t name) 782{ 783 ACPI_NAME_UNION *anu; 784 int clear, i; 785 786 anu = (ACPI_NAME_UNION *)&name; 787 ad->ad_name[4] = '\0'; 788 789 for (i = 3, clear = 0; i >= 0; i--) { 790 791 if (clear == 0 && anu->Ascii[i] == '_') 792 ad->ad_name[i] = '\0'; 793 else { 794 ad->ad_name[i] = anu->Ascii[i]; 795 clear = 1; 796 } 797 } 798 799 if (ad->ad_name[0] == '\0') 800 ad->ad_name[0] = '_'; 801} 802 803/* 804 * Device attachment. 805 */ 806static int 807acpi_rescan(device_t self, const char *ifattr, const int *locators) 808{ 809 struct acpi_softc *sc = device_private(self); 810 struct acpi_attach_args aa; 811 812 /* 813 * Try to attach hpet(4) first via a specific table. 814 */ 815 aa.aa_memt = sc->sc_memt; 816 817 if (ifattr_match(ifattr, "acpihpetbus") && sc->sc_hpet == NULL) 818 sc->sc_hpet = config_found_ia(sc->sc_dev, 819 "acpihpetbus", &aa, NULL); 820 821 /* 822 * A two-pass scan for acpinodebus. 823 */ 824 if (ifattr_match(ifattr, "acpinodebus")) { 825 acpi_rescan_early(sc); 826 acpi_rescan_nodes(sc); 827 } 828 829 /* 830 * Attach APM emulation and acpiwdrt(4). 831 */ 832 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 833 sc->sc_apmbus = config_found_ia(sc->sc_dev, 834 "acpiapmbus", NULL, NULL); 835 836 if (ifattr_match(ifattr, "acpiwdrtbus") && sc->sc_wdrt == NULL) 837 sc->sc_wdrt = config_found_ia(sc->sc_dev, 838 "acpiwdrtbus", NULL, NULL); 839 840 return 0; 841} 842 843static void 844acpi_rescan_early(struct acpi_softc *sc) 845{ 846 struct acpi_attach_args aa; 847 struct acpi_devnode *ad; 848 849 /* 850 * First scan for devices such as acpiec(4) that 851 * should be always attached before anything else. 852 * We want these devices to attach regardless of 853 * the device status and other restrictions. 854 */ 855 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 856 857 if (ad->ad_device != NULL) 858 continue; 859 860 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 861 continue; 862 863 if (acpi_match_hid(ad->ad_devinfo, acpi_early_ids) == 0) 864 continue; 865 866 aa.aa_node = ad; 867 aa.aa_iot = sc->sc_iot; 868 aa.aa_memt = sc->sc_memt; 869 aa.aa_pc = sc->sc_pc; 870 aa.aa_pciflags = sc->sc_pciflags; 871 aa.aa_ic = sc->sc_ic; 872 aa.aa_dmat = sc->sc_dmat; 873 aa.aa_dmat64 = sc->sc_dmat64; 874 875 ad->ad_device = config_found_ia(sc->sc_dev, 876 "acpinodebus", &aa, acpi_print); 877 } 878} 879 880static void 881acpi_rescan_nodes(struct acpi_softc *sc) 882{ 883 const char * const hpet_ids[] = { "PNP0103", NULL }; 884 struct acpi_attach_args aa; 885 struct acpi_devnode *ad; 886 ACPI_DEVICE_INFO *di; 887 888 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 889 890 if (ad->ad_device != NULL) 891 continue; 892 893 /* 894 * There is a bug in ACPICA: it defines the type 895 * of the scopes incorrectly for its own reasons. 896 */ 897 if (acpi_is_scope(ad) != false) 898 continue; 899 900 di = ad->ad_devinfo; 901 902 /* 903 * We only attach devices which are present, enabled, and 904 * functioning properly. However, if a device is enabled, 905 * it is decoding resources and we should claim these, 906 * if possible. This requires changes to bus_space(9). 907 */ 908 if (di->Type == ACPI_TYPE_DEVICE && 909 !acpi_device_present(ad->ad_handle)) { 910 continue; 911 } 912 913 if (di->Type == ACPI_TYPE_POWER) 914 continue; 915 916 if (di->Type == ACPI_TYPE_PROCESSOR) 917 continue; 918 919 if (acpi_match_hid(di, acpi_early_ids) != 0) 920 continue; 921 922 if (acpi_match_hid(di, acpi_ignored_ids) != 0) 923 continue; 924 925 if (acpi_match_hid(di, hpet_ids) != 0 && sc->sc_hpet != NULL) 926 continue; 927 928 aa.aa_node = ad; 929 aa.aa_iot = sc->sc_iot; 930 aa.aa_memt = sc->sc_memt; 931 aa.aa_pc = sc->sc_pc; 932 aa.aa_pciflags = sc->sc_pciflags; 933 aa.aa_ic = sc->sc_ic; 934 aa.aa_dmat = sc->sc_dmat; 935 aa.aa_dmat64 = sc->sc_dmat64; 936 937 ad->ad_device = config_found_ia(sc->sc_dev, 938 "acpinodebus", &aa, acpi_print); 939 } 940} 941 942static void 943acpi_rescan_capabilities(device_t self) 944{ 945 struct acpi_softc *sc = device_private(self); 946 struct acpi_devnode *ad; 947 ACPI_HANDLE tmp; 948 ACPI_STATUS rv; 949 950 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 951 952 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 953 continue; 954 955 /* 956 * Scan power resource capabilities. 957 * 958 * If any power states are supported, 959 * at least _PR0 and _PR3 must be present. 960 */ 961 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 962 963 if (ACPI_SUCCESS(rv)) { 964 ad->ad_flags |= ACPI_DEVICE_POWER; 965 acpi_power_add(ad); 966 } 967 968 /* 969 * Scan wake-up capabilities. 970 */ 971 if (ad->ad_wakedev != NULL) { 972 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 973 acpi_wakedev_add(ad); 974 } 975 976 /* 977 * Scan docking stations. 978 */ 979 rv = AcpiGetHandle(ad->ad_handle, "_DCK", &tmp); 980 981 if (ACPI_SUCCESS(rv)) 982 ad->ad_flags |= ACPI_DEVICE_DOCK; 983 984 /* 985 * Scan devices that are ejectable. 986 */ 987 rv = AcpiGetHandle(ad->ad_handle, "_EJ0", &tmp); 988 989 if (ACPI_SUCCESS(rv)) 990 ad->ad_flags |= ACPI_DEVICE_EJECT; 991 } 992} 993 994static int 995acpi_print(void *aux, const char *pnp) 996{ 997 struct acpi_attach_args *aa = aux; 998 struct acpi_devnode *ad; 999 const char *hid, *uid; 1000 ACPI_DEVICE_INFO *di; 1001 1002 ad = aa->aa_node; 1003 di = ad->ad_devinfo; 1004 1005 hid = di->HardwareId.String; 1006 uid = di->UniqueId.String; 1007 1008 if (pnp != NULL) { 1009 1010 if (di->Type != ACPI_TYPE_DEVICE) { 1011 1012 aprint_normal("%s (ACPI Object Type '%s') at %s", 1013 ad->ad_name, AcpiUtGetTypeName(ad->ad_type), pnp); 1014 1015 return UNCONF; 1016 } 1017 1018 if ((di->Valid & ACPI_VALID_HID) == 0 || hid == NULL) 1019 return 0; 1020 1021 aprint_normal("%s (%s) ", ad->ad_name, hid); 1022 acpi_print_dev(hid); 1023 aprint_normal("at %s", pnp); 1024 1025 return UNCONF; 1026 } 1027 1028 aprint_normal(" (%s", ad->ad_name); 1029 1030 if ((di->Valid & ACPI_VALID_HID) != 0 && hid != NULL) { 1031 1032 aprint_normal(", %s", hid); 1033 1034 if ((di->Valid & ACPI_VALID_UID) != 0 && uid != NULL) { 1035 1036 if (uid[0] == '\0') 1037 uid = "<null>"; 1038 1039 aprint_normal("-%s", uid); 1040 } 1041 } 1042 1043 aprint_normal(")"); 1044 1045 return UNCONF; 1046} 1047 1048/* 1049 * Notify. 1050 */ 1051static void 1052acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1053{ 1054 struct acpi_softc *sc = acpi_softc; 1055 struct acpi_devnode *ad; 1056 1057 KASSERT(sc != NULL); 1058 KASSERT(aux == NULL); 1059 KASSERT(acpi_active != 0); 1060 1061 if (acpi_suspended != 0) 1062 return; 1063 1064 /* 1065 * System: 0x00 - 0x7F. 1066 * Device: 0x80 - 0xFF. 1067 */ 1068 switch (event) { 1069 1070 case ACPI_NOTIFY_BUS_CHECK: 1071 case ACPI_NOTIFY_DEVICE_CHECK: 1072 case ACPI_NOTIFY_DEVICE_WAKE: 1073 case ACPI_NOTIFY_EJECT_REQUEST: 1074 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1075 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1076 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1077 case ACPI_NOTIFY_POWER_FAULT: 1078 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1079 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1080 case ACPI_NOTIFY_RESERVED: 1081 case ACPI_NOTIFY_LOCALITY_UPDATE: 1082 break; 1083 } 1084 1085 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1086 "%s (%p)\n", event, acpi_name(handle), handle)); 1087 1088 /* 1089 * We deliver notifications only to drivers 1090 * that have been successfully attached and 1091 * that have registered a handler with us. 1092 * The opaque pointer is always the device_t. 1093 */ 1094 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1095 1096 if (ad->ad_device == NULL) 1097 continue; 1098 1099 if (ad->ad_notify == NULL) 1100 continue; 1101 1102 if (ad->ad_handle != handle) 1103 continue; 1104 1105 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1106 1107 return; 1108 } 1109 1110 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1111 "for %s (%p)\n", event, acpi_name(handle), handle); 1112} 1113 1114bool 1115acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1116{ 1117 struct acpi_softc *sc = acpi_softc; 1118 1119 KASSERT(sc != NULL); 1120 KASSERT(acpi_active != 0); 1121 1122 if (acpi_suspended != 0) 1123 goto fail; 1124 1125 if (ad == NULL || notify == NULL) 1126 goto fail; 1127 1128 ad->ad_notify = notify; 1129 1130 return true; 1131 1132fail: 1133 aprint_error_dev(sc->sc_dev, "failed to register notify " 1134 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1135 1136 return false; 1137} 1138 1139void 1140acpi_deregister_notify(struct acpi_devnode *ad) 1141{ 1142 1143 ad->ad_notify = NULL; 1144} 1145 1146/* 1147 * Fixed buttons. 1148 */ 1149static void 1150acpi_register_fixed_button(struct acpi_softc *sc, int event) 1151{ 1152 struct sysmon_pswitch *smpsw; 1153 ACPI_STATUS rv; 1154 int type; 1155 1156 switch (event) { 1157 1158 case ACPI_EVENT_POWER_BUTTON: 1159 1160 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1161 return; 1162 1163 type = PSWITCH_TYPE_POWER; 1164 smpsw = &sc->sc_smpsw_power; 1165 break; 1166 1167 case ACPI_EVENT_SLEEP_BUTTON: 1168 1169 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1170 return; 1171 1172 type = PSWITCH_TYPE_SLEEP; 1173 smpsw = &sc->sc_smpsw_sleep; 1174 break; 1175 1176 default: 1177 rv = AE_TYPE; 1178 goto fail; 1179 } 1180 1181 smpsw->smpsw_type = type; 1182 smpsw->smpsw_name = device_xname(sc->sc_dev); 1183 1184 if (sysmon_pswitch_register(smpsw) != 0) { 1185 rv = AE_ERROR; 1186 goto fail; 1187 } 1188 1189 AcpiClearEvent(event); 1190 1191 rv = AcpiInstallFixedEventHandler(event, 1192 acpi_fixed_button_handler, smpsw); 1193 1194 if (ACPI_FAILURE(rv)) { 1195 sysmon_pswitch_unregister(smpsw); 1196 goto fail; 1197 } 1198 1199 aprint_normal_dev(sc->sc_dev, "fixed %s button present\n", 1200 (type != PSWITCH_TYPE_SLEEP) ? "power" : "sleep"); 1201 1202 return; 1203 1204fail: 1205 aprint_error_dev(sc->sc_dev, "failed to register " 1206 "fixed event %d: %s\n", event, AcpiFormatException(rv)); 1207} 1208 1209static void 1210acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1211{ 1212 struct sysmon_pswitch *smpsw; 1213 ACPI_STATUS rv; 1214 1215 switch (event) { 1216 1217 case ACPI_EVENT_POWER_BUTTON: 1218 smpsw = &sc->sc_smpsw_power; 1219 1220 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1221 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1222 return; 1223 } 1224 1225 break; 1226 1227 case ACPI_EVENT_SLEEP_BUTTON: 1228 smpsw = &sc->sc_smpsw_sleep; 1229 1230 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1231 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1232 return; 1233 } 1234 1235 break; 1236 1237 default: 1238 rv = AE_TYPE; 1239 goto fail; 1240 } 1241 1242 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1243 1244 if (ACPI_SUCCESS(rv)) { 1245 sysmon_pswitch_unregister(smpsw); 1246 return; 1247 } 1248 1249fail: 1250 aprint_error_dev(sc->sc_dev, "failed to deregister " 1251 "fixed event: %s\n", AcpiFormatException(rv)); 1252} 1253 1254static uint32_t 1255acpi_fixed_button_handler(void *context) 1256{ 1257 static const int handler = OSL_NOTIFY_HANDLER; 1258 struct sysmon_pswitch *smpsw = context; 1259 1260 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1261 1262 return ACPI_INTERRUPT_HANDLED; 1263} 1264 1265static void 1266acpi_fixed_button_pressed(void *context) 1267{ 1268 struct sysmon_pswitch *smpsw = context; 1269 1270 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1271 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1272 "power" : "sleep")); 1273 1274 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1275} 1276 1277/* 1278 * Sleep. 1279 */ 1280static void 1281acpi_sleep_init(struct acpi_softc *sc) 1282{ 1283 uint8_t a, b, i; 1284 ACPI_STATUS rv; 1285 1286 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1287 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1288 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1289 1290 /* 1291 * Evaluate supported sleep states. 1292 */ 1293 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1294 1295 rv = AcpiGetSleepTypeData(i, &a, &b); 1296 1297 if (ACPI_SUCCESS(rv)) 1298 sc->sc_sleepstates |= __BIT(i); 1299 } 1300} 1301 1302/* 1303 * Must be called with interrupts enabled. 1304 */ 1305void 1306acpi_enter_sleep_state(int state) 1307{ 1308 struct acpi_softc *sc = acpi_softc; 1309 ACPI_STATUS rv; 1310 1311 if (acpi_softc == NULL) 1312 return; 1313 1314 if (state == sc->sc_sleepstate) 1315 return; 1316 1317 if (state < ACPI_STATE_S0 || state > ACPI_STATE_S5) 1318 return; 1319 1320 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1321 1322 switch (state) { 1323 1324 case ACPI_STATE_S0: 1325 sc->sc_sleepstate = ACPI_STATE_S0; 1326 return; 1327 1328 case ACPI_STATE_S1: 1329 case ACPI_STATE_S2: 1330 case ACPI_STATE_S3: 1331 case ACPI_STATE_S4: 1332 1333 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1334 aprint_error_dev(sc->sc_dev, "sleep state " 1335 "S%d is not available\n", state); 1336 return; 1337 } 1338 1339 /* 1340 * Evaluate the _TTS method. This should be done before 1341 * pmf_system_suspend(9) and the evaluation of _PTS. 1342 * We should also re-evaluate this once we return to 1343 * S0 or if we abort the sleep state transition in the 1344 * middle (see ACPI 3.0, section 7.3.6). In reality, 1345 * however, the _TTS method is seldom seen in the field. 1346 */ 1347 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1348 1349 if (ACPI_SUCCESS(rv)) 1350 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1351 1352 if (state != ACPI_STATE_S1 && 1353 pmf_system_suspend(PMF_Q_NONE) != true) { 1354 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1355 break; 1356 } 1357 1358 /* 1359 * This will evaluate the _PTS and _SST methods, 1360 * but unlike the documentation claims, not _GTS, 1361 * which is evaluated in AcpiEnterSleepState(). 1362 * This must be called with interrupts enabled. 1363 */ 1364 rv = AcpiEnterSleepStatePrep(state); 1365 1366 if (ACPI_FAILURE(rv)) { 1367 aprint_error_dev(sc->sc_dev, "failed to prepare " 1368 "S%d: %s\n", state, AcpiFormatException(rv)); 1369 break; 1370 } 1371 1372 /* 1373 * After the _PTS method has been evaluated, we can 1374 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1375 */ 1376 acpi_wakedev_commit(sc, state); 1377 1378 sc->sc_sleepstate = state; 1379 1380 if (state == ACPI_STATE_S1) { 1381 1382 /* 1383 * Before the transition to S1, CPU caches 1384 * must be flushed (see ACPI 4.0, 7.3.4.2). 1385 * 1386 * Note that interrupts must be off before 1387 * calling AcpiEnterSleepState(). Conversely, 1388 * AcpiLeaveSleepState() should always be 1389 * called with interrupts enabled. 1390 */ 1391 acpi_md_OsDisableInterrupt(); 1392 1393 ACPI_FLUSH_CPU_CACHE(); 1394 rv = AcpiEnterSleepState(state); 1395 1396 if (ACPI_FAILURE(rv)) 1397 aprint_error_dev(sc->sc_dev, "failed to " 1398 "enter S1: %s\n", AcpiFormatException(rv)); 1399 1400 /* 1401 * Clear fixed events and disable all GPEs before 1402 * interrupts are enabled. 1403 */ 1404 AcpiClearEvent(ACPI_EVENT_PMTIMER); 1405 AcpiClearEvent(ACPI_EVENT_GLOBAL); 1406 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON); 1407 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON); 1408 AcpiClearEvent(ACPI_EVENT_RTC); 1409 AcpiHwDisableAllGpes(); 1410 1411 acpi_md_OsEnableInterrupt(); 1412 rv = AcpiLeaveSleepState(state); 1413 1414 } else { 1415 1416 (void)acpi_md_sleep(state); 1417 1418 if (state == ACPI_STATE_S4) 1419 AcpiEnable(); 1420 1421 (void)pmf_system_bus_resume(PMF_Q_NONE); 1422 (void)AcpiLeaveSleepState(state); 1423 (void)AcpiSetFirmwareWakingVector(0, 0); 1424 (void)pmf_system_resume(PMF_Q_NONE); 1425 } 1426 1427 /* 1428 * No wake GPEs should be enabled at runtime. 1429 */ 1430 acpi_wakedev_commit(sc, ACPI_STATE_S0); 1431 break; 1432 1433 case ACPI_STATE_S5: 1434 1435 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1436 1437 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1438 1439 if (ACPI_FAILURE(rv)) { 1440 aprint_error_dev(sc->sc_dev, "failed to prepare " 1441 "S%d: %s\n", state, AcpiFormatException(rv)); 1442 break; 1443 } 1444 1445 (void)AcpiDisableAllGpes(); 1446 1447 DELAY(1000000); 1448 1449 sc->sc_sleepstate = state; 1450 acpi_md_OsDisableInterrupt(); 1451 1452 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1453 1454 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1455 1456 break; 1457 } 1458 1459 sc->sc_sleepstate = ACPI_STATE_S0; 1460 1461 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1462} 1463 1464/* 1465 * Sysctl. 1466 */ 1467SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1468{ 1469 const struct sysctlnode *rnode, *snode; 1470 int err; 1471 1472 err = sysctl_createv(clog, 0, NULL, &rnode, 1473 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1474 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1475 NULL, 0, NULL, 0, 1476 CTL_HW, CTL_CREATE, CTL_EOL); 1477 1478 if (err != 0) 1479 return; 1480 1481 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1482 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1483 "root", SYSCTL_DESCR("ACPI root pointer"), 1484 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1485 CTL_CREATE, CTL_EOL); 1486 1487 err = sysctl_createv(clog, 0, &rnode, &snode, 1488 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1489 "sleep", SYSCTL_DESCR("ACPI sleep"), 1490 NULL, 0, NULL, 0, 1491 CTL_CREATE, CTL_EOL); 1492 1493 if (err != 0) 1494 return; 1495 1496 (void)sysctl_createv(NULL, 0, &snode, NULL, 1497 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1498 "state", SYSCTL_DESCR("System sleep state"), 1499 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1500 CTL_CREATE, CTL_EOL); 1501 1502 (void)sysctl_createv(NULL, 0, &snode, NULL, 1503 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1504 "states", SYSCTL_DESCR("Supported sleep states"), 1505 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1506 CTL_CREATE, CTL_EOL); 1507 1508 err = sysctl_createv(clog, 0, &rnode, &rnode, 1509 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1510 "stat", SYSCTL_DESCR("ACPI statistics"), 1511 NULL, 0, NULL, 0, 1512 CTL_CREATE, CTL_EOL); 1513 1514 if (err != 0) 1515 return; 1516 1517 (void)sysctl_createv(clog, 0, &rnode, NULL, 1518 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1519 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1520 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1521 CTL_CREATE, CTL_EOL); 1522 1523 (void)sysctl_createv(clog, 0, &rnode, NULL, 1524 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1525 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1526 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1527 CTL_CREATE, CTL_EOL); 1528 1529 (void)sysctl_createv(clog, 0, &rnode, NULL, 1530 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1531 "fixed", SYSCTL_DESCR("Number of fixed events"), 1532 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1533 CTL_CREATE, CTL_EOL); 1534 1535 (void)sysctl_createv(clog, 0, &rnode, NULL, 1536 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1537 "method", SYSCTL_DESCR("Number of methods executed"), 1538 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1539 CTL_CREATE, CTL_EOL); 1540 1541 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1542 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1543} 1544 1545static int 1546sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1547{ 1548 struct sysctlnode node; 1549 uint64_t t; 1550 int err, i; 1551 1552 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1553 t += AcpiFixedEventCount[i]; 1554 1555 node = *rnode; 1556 node.sysctl_data = &t; 1557 1558 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1559 1560 if (err || newp == NULL) 1561 return err; 1562 1563 return 0; 1564} 1565 1566static int 1567sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1568{ 1569 struct acpi_softc *sc = acpi_softc; 1570 struct sysctlnode node; 1571 int err, t; 1572 1573 if (acpi_softc == NULL) 1574 return ENOSYS; 1575 1576 node = *rnode; 1577 t = sc->sc_sleepstate; 1578 node.sysctl_data = &t; 1579 1580 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1581 1582 if (err || newp == NULL) 1583 return err; 1584 1585 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1586 return EINVAL; 1587 1588 acpi_enter_sleep_state(t); 1589 1590 return 0; 1591} 1592 1593static int 1594sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1595{ 1596 struct acpi_softc *sc = acpi_softc; 1597 struct sysctlnode node; 1598 char t[3 * 6 + 1]; 1599 int err; 1600 1601 if (acpi_softc == NULL) 1602 return ENOSYS; 1603 1604 (void)memset(t, '\0', sizeof(t)); 1605 1606 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1607 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1608 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1609 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1610 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1611 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1612 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1613 1614 node = *rnode; 1615 node.sysctl_data = &t; 1616 1617 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1618 1619 if (err || newp == NULL) 1620 return err; 1621 1622 return 0; 1623} 1624 1625/* 1626 * Tables. 1627 */ 1628ACPI_PHYSICAL_ADDRESS 1629acpi_OsGetRootPointer(void) 1630{ 1631 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1632 1633 /* 1634 * We let MD code handle this since there are multiple ways to do it: 1635 * 1636 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1637 * 1638 * IA-64: Use the EFI. 1639 */ 1640 PhysicalAddress = acpi_md_OsGetRootPointer(); 1641 1642 if (acpi_root_pointer == 0) 1643 acpi_root_pointer = PhysicalAddress; 1644 1645 return PhysicalAddress; 1646} 1647 1648static ACPI_TABLE_HEADER * 1649acpi_map_rsdt(void) 1650{ 1651 ACPI_PHYSICAL_ADDRESS paddr; 1652 ACPI_TABLE_RSDP *rsdp; 1653 1654 paddr = AcpiOsGetRootPointer(); 1655 1656 if (paddr == 0) 1657 return NULL; 1658 1659 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1660 1661 if (rsdp == NULL) 1662 return NULL; 1663 1664 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1665 paddr = rsdp->XsdtPhysicalAddress; 1666 else 1667 paddr = rsdp->RsdtPhysicalAddress; 1668 1669 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1670 1671 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1672} 1673 1674/* 1675 * XXX: Refactor to be a generic function that unmaps tables. 1676 */ 1677static void 1678acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1679{ 1680 1681 if (rsdt == NULL) 1682 return; 1683 1684 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1685} 1686 1687/* 1688 * XXX: Refactor to be a generic function that maps tables. 1689 */ 1690ACPI_STATUS 1691acpi_madt_map(void) 1692{ 1693 ACPI_STATUS rv; 1694 1695 if (madt_header != NULL) 1696 return AE_ALREADY_EXISTS; 1697 1698 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); 1699 1700 if (ACPI_FAILURE(rv)) 1701 return rv; 1702 1703 return AE_OK; 1704} 1705 1706void 1707acpi_madt_unmap(void) 1708{ 1709 madt_header = NULL; 1710} 1711 1712ACPI_STATUS 1713acpi_gtdt_map(void) 1714{ 1715 ACPI_STATUS rv; 1716 1717 if (gtdt_header != NULL) 1718 return AE_ALREADY_EXISTS; 1719 1720 rv = AcpiGetTable(ACPI_SIG_GTDT, 1, >dt_header); 1721 1722 if (ACPI_FAILURE(rv)) 1723 return rv; 1724 1725 return AE_OK; 1726} 1727 1728void 1729acpi_gtdt_unmap(void) 1730{ 1731 gtdt_header = NULL; 1732} 1733 1734/* 1735 * XXX: Refactor to be a generic function that walks tables. 1736 */ 1737void 1738acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) 1739{ 1740 ACPI_SUBTABLE_HEADER *hdrp; 1741 char *madtend, *where; 1742 1743 madtend = (char *)madt_header + madt_header->Length; 1744 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); 1745 1746 while (where < madtend) { 1747 1748 hdrp = (ACPI_SUBTABLE_HEADER *)where; 1749 1750 if (ACPI_FAILURE(func(hdrp, aux))) 1751 break; 1752 1753 where += hdrp->Length; 1754 } 1755} 1756 1757void 1758acpi_gtdt_walk(ACPI_STATUS (*func)(ACPI_GTDT_HEADER *, void *), void *aux) 1759{ 1760 ACPI_GTDT_HEADER *hdrp; 1761 char *gtdtend, *where; 1762 1763 gtdtend = (char *)gtdt_header + gtdt_header->Length; 1764 where = (char *)gtdt_header + sizeof (ACPI_TABLE_GTDT); 1765 1766 while (where < gtdtend) { 1767 1768 hdrp = (ACPI_GTDT_HEADER *)where; 1769 1770 if (ACPI_FAILURE(func(hdrp, aux))) 1771 break; 1772 1773 where += hdrp->Length; 1774 } 1775} 1776 1777/* 1778 * Miscellaneous. 1779 */ 1780static bool 1781acpi_is_scope(struct acpi_devnode *ad) 1782{ 1783 int i; 1784 1785 /* 1786 * Return true if the node is a root scope. 1787 */ 1788 if (ad->ad_parent == NULL) 1789 return false; 1790 1791 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1792 return false; 1793 1794 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1795 1796 if (acpi_scopes[i] == NULL) 1797 continue; 1798 1799 if (ad->ad_handle == acpi_scopes[i]) 1800 return true; 1801 } 1802 1803 return false; 1804} 1805 1806bool 1807acpi_device_present(ACPI_HANDLE handle) 1808{ 1809 ACPI_STATUS rv; 1810 ACPI_INTEGER sta; 1811 1812 rv = acpi_eval_integer(handle, "_STA", &sta); 1813 1814 if (ACPI_FAILURE(rv)) { 1815 /* No _STA method -> must be there */ 1816 return rv == AE_NOT_FOUND; 1817 } 1818 1819 return (sta & ACPI_STA_OK) == ACPI_STA_OK; 1820} 1821 1822/* 1823 * ACPIVERBOSE. 1824 */ 1825void 1826acpi_load_verbose(void) 1827{ 1828 1829 if (acpi_verbose_loaded == 0) 1830 module_autoload("acpiverbose", MODULE_CLASS_MISC); 1831} 1832 1833void 1834acpi_print_verbose_stub(struct acpi_softc *sc) 1835{ 1836 1837 acpi_load_verbose(); 1838 1839 if (acpi_verbose_loaded != 0) 1840 acpi_print_verbose(sc); 1841} 1842 1843void 1844acpi_print_dev_stub(const char *pnpstr) 1845{ 1846 1847 acpi_load_verbose(); 1848 1849 if (acpi_verbose_loaded != 0) 1850 acpi_print_dev(pnpstr); 1851} 1852 1853MALLOC_DECLARE(M_ACPI); /* XXX: ACPI_ACTIVATE_DEV should use kmem(9). */ 1854 1855/* 1856 * ACPI_ACTIVATE_DEV. 1857 */ 1858static void 1859acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 1860{ 1861 1862#ifndef ACPI_ACTIVATE_DEV 1863 return; 1864} 1865#else 1866 static const int valid = ACPI_VALID_HID; 1867 ACPI_DEVICE_INFO *newdi; 1868 ACPI_STATUS rv; 1869 1870 1871 /* 1872 * If the device is valid and present, 1873 * but not enabled, try to activate it. 1874 */ 1875 if (((*di)->Valid & valid) != valid) 1876 return; 1877 1878 if (!acpi_device_present(handle)) 1879 return; 1880 1881 rv = acpi_allocate_resources(handle); 1882 1883 if (ACPI_FAILURE(rv)) 1884 goto fail; 1885 1886 rv = AcpiGetObjectInfo(handle, &newdi); 1887 1888 if (ACPI_FAILURE(rv)) 1889 goto fail; 1890 1891 ACPI_FREE(*di); 1892 *di = newdi; 1893 1894 aprint_verbose_dev(acpi_softc->sc_dev, 1895 "%s activated\n", (*di)->HardwareId.String); 1896 1897 return; 1898 1899fail: 1900 aprint_error_dev(acpi_softc->sc_dev, "failed to " 1901 "activate %s\n", (*di)->HardwareId.String); 1902} 1903 1904/* 1905 * XXX: This very incomplete. 1906 */ 1907ACPI_STATUS 1908acpi_allocate_resources(ACPI_HANDLE handle) 1909{ 1910 ACPI_BUFFER bufp, bufc, bufn; 1911 ACPI_RESOURCE *resp, *resc, *resn; 1912 ACPI_RESOURCE_IRQ *irq; 1913#if 0 1914 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 1915#endif 1916 ACPI_STATUS rv; 1917 uint delta; 1918 1919 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 1920 if (ACPI_FAILURE(rv)) 1921 goto out; 1922 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 1923 if (ACPI_FAILURE(rv)) { 1924 goto out1; 1925 } 1926 1927 bufn.Length = 1000; 1928 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 1929 resp = bufp.Pointer; 1930 resc = bufc.Pointer; 1931 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 1932 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1933 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 1934 resp = ACPI_NEXT_RESOURCE(resp); 1935 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 1936 break; 1937 /* Found identical Id */ 1938 resn->Type = resc->Type; 1939 switch (resc->Type) { 1940 case ACPI_RESOURCE_TYPE_IRQ: 1941 memcpy(&resn->Data, &resp->Data, 1942 sizeof(ACPI_RESOURCE_IRQ)); 1943 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 1944 irq->Interrupts[0] = 1945 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 1946 Interrupts[irq->InterruptCount-1]; 1947 irq->InterruptCount = 1; 1948 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 1949 break; 1950 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 1951 memcpy(&resn->Data, &resp->Data, 1952 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 1953#if 0 1954 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 1955 /* 1956 * XXX: Not duplicating the interrupt logic above 1957 * because its not clear what it accomplishes. 1958 */ 1959 xirq->Interrupts[0] = 1960 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 1961 Interrupts[irq->NumberOfInterrupts-1]; 1962 xirq->NumberOfInterrupts = 1; 1963#endif 1964 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 1965 break; 1966 case ACPI_RESOURCE_TYPE_IO: 1967 memcpy(&resn->Data, &resp->Data, 1968 sizeof(ACPI_RESOURCE_IO)); 1969 resn->Length = resp->Length; 1970 break; 1971 default: 1972 aprint_error_dev(acpi_softc->sc_dev, 1973 "%s: invalid type %u\n", __func__, resc->Type); 1974 rv = AE_BAD_DATA; 1975 goto out2; 1976 } 1977 resc = ACPI_NEXT_RESOURCE(resc); 1978 resn = ACPI_NEXT_RESOURCE(resn); 1979 resp = ACPI_NEXT_RESOURCE(resp); 1980 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 1981 if (delta >= 1982 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 1983 bufn.Length *= 2; 1984 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 1985 M_ACPI, M_WAITOK); 1986 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 1987 delta); 1988 } 1989 } 1990 1991 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1992 aprint_error_dev(acpi_softc->sc_dev, 1993 "%s: resc not exhausted\n", __func__); 1994 rv = AE_BAD_DATA; 1995 goto out3; 1996 } 1997 1998 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 1999 rv = AcpiSetCurrentResources(handle, &bufn); 2000 2001 if (ACPI_FAILURE(rv)) 2002 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 2003 "resources: %s\n", __func__, AcpiFormatException(rv)); 2004 2005out3: 2006 free(bufn.Pointer, M_ACPI); 2007out2: 2008 ACPI_FREE(bufc.Pointer); 2009out1: 2010 ACPI_FREE(bufp.Pointer); 2011out: 2012 return rv; 2013} 2014 2015#endif /* ACPI_ACTIVATE_DEV */ 2016