acpi.c revision 1.233
1/* $NetBSD: acpi.c,v 1.233 2011/01/13 05:58:05 jruoho Exp $ */ 2 3/*- 4 * Copyright (c) 2003, 2007 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum of By Noon Software, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32/* 33 * Copyright (c) 2003 Wasabi Systems, Inc. 34 * All rights reserved. 35 * 36 * Written by Frank van der Linden for Wasabi Systems, Inc. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed for the NetBSD Project by 49 * Wasabi Systems, Inc. 50 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 51 * or promote products derived from this software without specific prior 52 * written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 56 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 57 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 58 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 59 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 60 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 61 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 62 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 63 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 64 * POSSIBILITY OF SUCH DAMAGE. 65 */ 66 67/* 68 * Copyright 2001, 2003 Wasabi Systems, Inc. 69 * All rights reserved. 70 * 71 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 72 * 73 * Redistribution and use in source and binary forms, with or without 74 * modification, are permitted provided that the following conditions 75 * are met: 76 * 1. Redistributions of source code must retain the above copyright 77 * notice, this list of conditions and the following disclaimer. 78 * 2. Redistributions in binary form must reproduce the above copyright 79 * notice, this list of conditions and the following disclaimer in the 80 * documentation and/or other materials provided with the distribution. 81 * 3. All advertising materials mentioning features or use of this software 82 * must display the following acknowledgement: 83 * This product includes software developed for the NetBSD Project by 84 * Wasabi Systems, Inc. 85 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 86 * or promote products derived from this software without specific prior 87 * written permission. 88 * 89 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 90 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 91 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 92 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 93 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 94 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 95 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 96 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 97 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 98 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 99 * POSSIBILITY OF SUCH DAMAGE. 100 */ 101 102#include <sys/cdefs.h> 103__KERNEL_RCSID(0, "$NetBSD: acpi.c,v 1.233 2011/01/13 05:58:05 jruoho Exp $"); 104 105#include "opt_acpi.h" 106#include "opt_pcifixup.h" 107 108#include <sys/param.h> 109#include <sys/device.h> 110#include <sys/kernel.h> 111#include <sys/malloc.h> 112#include <sys/module.h> 113#include <sys/mutex.h> 114#include <sys/sysctl.h> 115#include <sys/systm.h> 116#include <sys/timetc.h> 117 118#include <dev/acpi/acpireg.h> 119#include <dev/acpi/acpivar.h> 120#include <dev/acpi/acpi_osd.h> 121#include <dev/acpi/acpi_pci.h> 122#include <dev/acpi/acpi_power.h> 123#include <dev/acpi/acpi_timer.h> 124#include <dev/acpi/acpi_wakedev.h> 125 126#define _COMPONENT ACPI_BUS_COMPONENT 127ACPI_MODULE_NAME ("acpi") 128 129#if defined(ACPI_PCI_FIXUP) 130#error The option ACPI_PCI_FIXUP has been obsoleted by PCI_INTR_FIXUP_DISABLED. Please adjust your kernel configuration file. 131#endif 132 133#ifdef PCI_INTR_FIXUP_DISABLED 134#include <dev/pci/pcidevs.h> 135#endif 136 137MALLOC_DECLARE(M_ACPI); 138 139#include <machine/acpi_machdep.h> 140 141#ifdef ACPI_DEBUGGER 142#define ACPI_DBGR_INIT 0x01 143#define ACPI_DBGR_TABLES 0x02 144#define ACPI_DBGR_ENABLE 0x04 145#define ACPI_DBGR_PROBE 0x08 146#define ACPI_DBGR_RUNNING 0x10 147 148static int acpi_dbgr = 0x00; 149#endif 150 151/* 152 * The acpi_active variable is set when the ACPI subsystem is active. 153 * Machine-dependent code may wish to skip other steps (such as attaching 154 * subsystems that ACPI supercedes) when ACPI is active. 155 */ 156uint32_t acpi_cpus = 0; 157int acpi_active = 0; 158int acpi_suspended = 0; 159int acpi_force_load = 0; 160int acpi_verbose_loaded = 0; 161 162struct acpi_softc *acpi_softc; 163static uint64_t acpi_root_pointer; 164extern kmutex_t acpi_interrupt_list_mtx; 165extern struct cfdriver acpi_cd; 166static ACPI_HANDLE acpi_scopes[4]; 167ACPI_TABLE_HEADER *madt_header; 168 169/* 170 * This structure provides a context for the ACPI 171 * namespace walk performed in acpi_build_tree(). 172 */ 173struct acpi_walkcontext { 174 struct acpi_softc *aw_sc; 175 struct acpi_devnode *aw_parent; 176}; 177 178/* 179 * Ignored HIDs. 180 */ 181static const char * const acpi_ignored_ids[] = { 182#if defined(i386) || defined(x86_64) 183 "PNP0000", /* AT interrupt controller is handled internally */ 184 "PNP0200", /* AT DMA controller is handled internally */ 185 "PNP0A??", /* PCI Busses are handled internally */ 186 "PNP0B00", /* AT RTC is handled internally */ 187 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 188#endif 189#if defined(x86_64) 190 "PNP0C04", /* FPU is handled internally */ 191#endif 192 NULL 193}; 194 195/* 196 * Devices that should be attached early. 197 */ 198static const char * const acpi_early_ids[] = { 199 "PNP0C09", /* acpiec(4) */ 200 NULL 201}; 202 203static int acpi_match(device_t, cfdata_t, void *); 204static int acpi_submatch(device_t, cfdata_t, const int *, void *); 205static void acpi_attach(device_t, device_t, void *); 206static int acpi_detach(device_t, int); 207static void acpi_childdet(device_t, device_t); 208static bool acpi_suspend(device_t, const pmf_qual_t *); 209static bool acpi_resume(device_t, const pmf_qual_t *); 210 211static void acpi_build_tree(struct acpi_softc *); 212static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, 213 void *, void **); 214static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t, 215 void *, void **); 216static void acpi_make_name(struct acpi_devnode *, uint32_t); 217 218static int acpi_rescan(device_t, const char *, const int *); 219static void acpi_rescan_early(struct acpi_softc *); 220static void acpi_rescan_nodes(struct acpi_softc *); 221static void acpi_rescan_capabilities(device_t); 222static int acpi_print(void *aux, const char *); 223 224static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); 225 226static void acpi_register_fixed_button(struct acpi_softc *, int); 227static void acpi_deregister_fixed_button(struct acpi_softc *, int); 228static uint32_t acpi_fixed_button_handler(void *); 229static void acpi_fixed_button_pressed(void *); 230 231static void acpi_sleep_init(struct acpi_softc *); 232 233static int sysctl_hw_acpi_fixedstats(SYSCTLFN_PROTO); 234static int sysctl_hw_acpi_sleepstate(SYSCTLFN_PROTO); 235static int sysctl_hw_acpi_sleepstates(SYSCTLFN_PROTO); 236 237static bool acpi_is_scope(struct acpi_devnode *); 238static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 239static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 240 241void acpi_print_verbose_stub(struct acpi_softc *); 242void acpi_print_dev_stub(const char *); 243 244static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **); 245ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE); 246 247void (*acpi_print_verbose)(struct acpi_softc *) = acpi_print_verbose_stub; 248void (*acpi_print_dev)(const char *) = acpi_print_dev_stub; 249 250CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 251 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 252 253/* 254 * Probe for ACPI support. 255 * 256 * This is called by the machine-dependent ACPI front-end. 257 * Note: this is not an autoconfiguration interface function. 258 */ 259int 260acpi_probe(void) 261{ 262 ACPI_TABLE_HEADER *rsdt; 263 const char *func; 264 static int once; 265 bool initialized; 266 ACPI_STATUS rv; 267 268 if (once != 0) 269 panic("%s: already probed", __func__); 270 271 once = 1; 272 func = NULL; 273 acpi_softc = NULL; 274 initialized = false; 275 276 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 277 278 /* 279 * Start up ACPICA. 280 */ 281#ifdef ACPI_DEBUGGER 282 if (acpi_dbgr & ACPI_DBGR_INIT) 283 acpi_osd_debugger(); 284#endif 285 286 CTASSERT(TRUE == true); 287 CTASSERT(FALSE == false); 288 289 AcpiGbl_AllMethodsSerialized = false; 290 AcpiGbl_EnableInterpreterSlack = true; 291 292 rv = AcpiInitializeSubsystem(); 293 294 if (ACPI_SUCCESS(rv)) 295 initialized = true; 296 else { 297 func = "AcpiInitializeSubsystem()"; 298 goto fail; 299 } 300 301 /* 302 * Allocate space for RSDT/XSDT and DSDT, 303 * but allow resizing if more tables exist. 304 */ 305 rv = AcpiInitializeTables(NULL, 2, true); 306 307 if (ACPI_FAILURE(rv)) { 308 func = "AcpiInitializeTables()"; 309 goto fail; 310 } 311 312#ifdef ACPI_DEBUGGER 313 if (acpi_dbgr & ACPI_DBGR_TABLES) 314 acpi_osd_debugger(); 315#endif 316 317 rv = AcpiLoadTables(); 318 319 if (ACPI_FAILURE(rv)) { 320 func = "AcpiLoadTables()"; 321 goto fail; 322 } 323 324 rsdt = acpi_map_rsdt(); 325 326 if (rsdt == NULL) { 327 func = "acpi_map_rsdt()"; 328 rv = AE_ERROR; 329 goto fail; 330 } 331 332 if (acpi_force_load == 0 && (acpi_find_quirks() & ACPI_QUIRK_BROKEN)) { 333 aprint_normal("ACPI: BIOS is listed as broken:\n"); 334 aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 335 "AslId <%4.4s,%08x>\n", 336 rsdt->OemId, rsdt->OemTableId, 337 rsdt->OemRevision, 338 rsdt->AslCompilerId, 339 rsdt->AslCompilerRevision); 340 aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n"); 341 acpi_unmap_rsdt(rsdt); 342 AcpiTerminate(); 343 return 0; 344 } 345 if (acpi_force_load == 0 && (acpi_find_quirks() & ACPI_QUIRK_OLDBIOS)) { 346 aprint_normal("ACPI: BIOS is too old (%s). Set acpi_force_load to use.\n", 347 pmf_get_platform("firmware-date")); 348 acpi_unmap_rsdt(rsdt); 349 AcpiTerminate(); 350 return 0; 351 } 352 353 acpi_unmap_rsdt(rsdt); 354 355 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 356 357 if (ACPI_FAILURE(rv)) { 358 func = "AcpiEnableSubsystem()"; 359 goto fail; 360 } 361 362 /* 363 * Looks like we have ACPI! 364 */ 365 return 1; 366 367fail: 368 KASSERT(rv != AE_OK); 369 KASSERT(func != NULL); 370 371 aprint_error("%s: failed to probe ACPI: %s\n", 372 func, AcpiFormatException(rv)); 373 374 if (initialized != false) 375 (void)AcpiTerminate(); 376 377 return 0; 378} 379 380void 381acpi_disable(void) 382{ 383 384 if (acpi_softc == NULL) 385 return; 386 387 KASSERT(acpi_active != 0); 388 389 if (AcpiGbl_FADT.SmiCommand != 0) 390 AcpiDisable(); 391} 392 393int 394acpi_check(device_t parent, const char *ifattr) 395{ 396 return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); 397} 398 399/* 400 * Autoconfiguration. 401 */ 402static int 403acpi_match(device_t parent, cfdata_t match, void *aux) 404{ 405 /* 406 * XXX: Nada; MD code has called acpi_probe(). 407 */ 408 return 1; 409} 410 411static int 412acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 413{ 414 struct cfattach *ca; 415 416 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 417 418 return (ca == &acpi_ca); 419} 420 421static void 422acpi_attach(device_t parent, device_t self, void *aux) 423{ 424 struct acpi_softc *sc = device_private(self); 425 struct acpibus_attach_args *aa = aux; 426 ACPI_TABLE_HEADER *rsdt; 427 ACPI_STATUS rv; 428 429 aprint_naive("\n"); 430 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 431 432 if (acpi_softc != NULL) 433 panic("%s: already attached", __func__); 434 435 rsdt = acpi_map_rsdt(); 436 437 if (rsdt == NULL) 438 aprint_error_dev(self, "X/RSDT: Not found\n"); 439 else { 440 aprint_verbose_dev(self, 441 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 442 rsdt->OemId, rsdt->OemTableId, 443 rsdt->OemRevision, 444 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 445 } 446 447 acpi_unmap_rsdt(rsdt); 448 449 sc->sc_dev = self; 450 sc->sc_root = NULL; 451 452 sc->sc_sleepstate = ACPI_STATE_S0; 453 sc->sc_quirks = acpi_find_quirks(); 454 455 sysmon_power_settype("acpi"); 456 457 sc->sc_iot = aa->aa_iot; 458 sc->sc_memt = aa->aa_memt; 459 sc->sc_pc = aa->aa_pc; 460 sc->sc_pciflags = aa->aa_pciflags; 461 sc->sc_ic = aa->aa_ic; 462 463 SIMPLEQ_INIT(&sc->ad_head); 464 465 acpi_softc = sc; 466 467 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) 468 aprint_error_dev(self, "couldn't establish power handler\n"); 469 470 /* 471 * Bring ACPI on-line. 472 */ 473#ifdef ACPI_DEBUGGER 474 if (acpi_dbgr & ACPI_DBGR_ENABLE) 475 acpi_osd_debugger(); 476#endif 477 478#define ACPI_ENABLE_PHASE1 \ 479 (ACPI_NO_HANDLER_INIT | ACPI_NO_EVENT_INIT) 480#define ACPI_ENABLE_PHASE2 \ 481 (ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE | \ 482 ACPI_NO_ADDRESS_SPACE_INIT) 483 484 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE1); 485 486 if (ACPI_FAILURE(rv)) 487 goto fail; 488 489 acpi_md_callback(); 490 491 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE2); 492 493 if (ACPI_FAILURE(rv)) 494 goto fail; 495 496 /* 497 * Early EC handler initialization if ECDT table is available. 498 */ 499 config_found_ia(self, "acpiecdtbus", aa, NULL); 500 501 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 502 503 if (ACPI_FAILURE(rv)) 504 goto fail; 505 506 /* 507 * Install global notify handlers. 508 */ 509 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 510 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 511 512 if (ACPI_FAILURE(rv)) 513 goto fail; 514 515 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 516 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 517 518 if (ACPI_FAILURE(rv)) 519 goto fail; 520 521 acpi_active = 1; 522 523 /* Show SCI interrupt. */ 524 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 525 AcpiGbl_FADT.SciInterrupt); 526 527 /* 528 * Install fixed-event handlers. 529 */ 530 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 531 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 532 533 acpitimer_init(sc); 534 535#ifdef ACPI_DEBUGGER 536 if (acpi_dbgr & ACPI_DBGR_PROBE) 537 acpi_osd_debugger(); 538#endif 539 540 /* 541 * Scan the namespace and build our device tree. 542 */ 543 acpi_build_tree(sc); 544 acpi_sleep_init(sc); 545 546#ifdef ACPI_DEBUGGER 547 if (acpi_dbgr & ACPI_DBGR_RUNNING) 548 acpi_osd_debugger(); 549#endif 550 551#ifdef ACPI_DEBUG 552 acpi_debug_init(); 553#endif 554 555 /* 556 * Print debug information. 557 */ 558 acpi_print_verbose(sc); 559 560 return; 561 562fail: 563 aprint_error("%s: failed to initialize ACPI: %s\n", 564 __func__, AcpiFormatException(rv)); 565} 566 567/* 568 * XXX: This is incomplete. 569 */ 570static int 571acpi_detach(device_t self, int flags) 572{ 573 struct acpi_softc *sc = device_private(self); 574 ACPI_STATUS rv; 575 int rc; 576 577 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 578 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 579 580 if (ACPI_FAILURE(rv)) 581 return EBUSY; 582 583 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 584 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 585 586 if (ACPI_FAILURE(rv)) 587 return EBUSY; 588 589 if ((rc = config_detach_children(self, flags)) != 0) 590 return rc; 591 592 if ((rc = acpitimer_detach()) != 0) 593 return rc; 594 595 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 596 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 597 598 pmf_device_deregister(self); 599 600 acpi_softc = NULL; 601 602 return 0; 603} 604 605/* 606 * XXX: Need to reclaim any resources? Yes. 607 */ 608static void 609acpi_childdet(device_t self, device_t child) 610{ 611 struct acpi_softc *sc = device_private(self); 612 struct acpi_devnode *ad; 613 614 if (sc->sc_apmbus == child) 615 sc->sc_apmbus = NULL; 616 617 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 618 619 if (ad->ad_device == child) 620 ad->ad_device = NULL; 621 } 622} 623 624static bool 625acpi_suspend(device_t dv, const pmf_qual_t *qual) 626{ 627 628 acpi_suspended = 1; 629 630 return true; 631} 632 633static bool 634acpi_resume(device_t dv, const pmf_qual_t *qual) 635{ 636 637 acpi_suspended = 0; 638 639 return true; 640} 641 642/* 643 * Namespace scan. 644 */ 645static void 646acpi_build_tree(struct acpi_softc *sc) 647{ 648 struct acpi_walkcontext awc; 649 650 /* 651 * Get the root scope handles. 652 */ 653 KASSERT(__arraycount(acpi_scopes) == 4); 654 655 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 656 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 657 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 658 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 659 660 /* 661 * Make the root node. 662 */ 663 awc.aw_sc = sc; 664 awc.aw_parent = NULL; 665 666 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 667 668 KASSERT(sc->sc_root == NULL); 669 KASSERT(awc.aw_parent != NULL); 670 671 sc->sc_root = awc.aw_parent; 672 673 /* 674 * Build the internal namespace. 675 */ 676 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 677 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 678 679 /* 680 * Scan the internal namespace. 681 */ 682 (void)acpi_pcidev_scan(sc->sc_root); 683 (void)acpi_rescan(sc->sc_dev, NULL, NULL); 684 685 /* 686 * Defer rest of the configuration. 687 */ 688 (void)config_defer(sc->sc_dev, acpi_rescan_capabilities); 689} 690 691static ACPI_STATUS 692acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 693 void *context, void **status) 694{ 695 struct acpi_walkcontext *awc = context; 696 struct acpi_softc *sc = awc->aw_sc; 697 struct acpi_devnode *ad; 698 ACPI_DEVICE_INFO *devinfo; 699 ACPI_OBJECT_TYPE type; 700 ACPI_STATUS rv; 701 702 rv = AcpiGetObjectInfo(handle, &devinfo); 703 704 if (ACPI_FAILURE(rv)) 705 return AE_OK; /* Do not terminate the walk. */ 706 707 type = devinfo->Type; 708 709 switch (type) { 710 711 case ACPI_TYPE_DEVICE: 712 acpi_activate_device(handle, &devinfo); 713 case ACPI_TYPE_PROCESSOR: 714 case ACPI_TYPE_THERMAL: 715 case ACPI_TYPE_POWER: 716 717 ad = malloc(sizeof(*ad), M_ACPI, M_NOWAIT | M_ZERO); 718 719 if (ad == NULL) 720 return AE_NO_MEMORY; 721 722 ad->ad_device = NULL; 723 ad->ad_notify = NULL; 724 ad->ad_pciinfo = NULL; 725 726 ad->ad_type = type; 727 ad->ad_handle = handle; 728 ad->ad_devinfo = devinfo; 729 730 ad->ad_root = sc->sc_dev; 731 ad->ad_parent = awc->aw_parent; 732 733 acpi_set_node(ad); 734 acpi_make_name(ad, devinfo->Name); 735 736 SIMPLEQ_INIT(&ad->ad_child_head); 737 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 738 739 if (ad->ad_parent != NULL) { 740 741 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 742 ad, ad_child_list); 743 } 744 745 awc->aw_parent = ad; 746 } 747 748 return AE_OK; 749} 750 751static ACPI_STATUS 752acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 753 void *context, void **status) 754{ 755 struct acpi_walkcontext *awc = context; 756 757 KASSERT(awc != NULL); 758 KASSERT(awc->aw_parent != NULL); 759 760 if (handle == awc->aw_parent->ad_handle) 761 awc->aw_parent = awc->aw_parent->ad_parent; 762 763 return AE_OK; 764} 765 766static void 767acpi_make_name(struct acpi_devnode *ad, uint32_t name) 768{ 769 ACPI_NAME_UNION *anu; 770 int clear, i; 771 772 anu = (ACPI_NAME_UNION *)&name; 773 ad->ad_name[4] = '\0'; 774 775 for (i = 3, clear = 0; i >= 0; i--) { 776 777 if (clear == 0 && anu->Ascii[i] == '_') 778 ad->ad_name[i] = '\0'; 779 else { 780 ad->ad_name[i] = anu->Ascii[i]; 781 clear = 1; 782 } 783 } 784 785 if (ad->ad_name[0] == '\0') 786 ad->ad_name[0] = '_'; 787} 788 789/* 790 * Device attachment. 791 */ 792static int 793acpi_rescan(device_t self, const char *ifattr, const int *locators) 794{ 795 struct acpi_softc *sc = device_private(self); 796 797 /* 798 * A two-pass scan for acpinodebus. 799 */ 800 if (ifattr_match(ifattr, "acpinodebus")) { 801 acpi_rescan_early(sc); 802 acpi_rescan_nodes(sc); 803 } 804 805 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 806 sc->sc_apmbus = config_found_ia(sc->sc_dev, 807 "acpiapmbus", NULL, NULL); 808 809 return 0; 810} 811 812static void 813acpi_rescan_early(struct acpi_softc *sc) 814{ 815 struct acpi_attach_args aa; 816 struct acpi_devnode *ad; 817 818 /* 819 * First scan for devices such as acpiec(4) that 820 * should be always attached before anything else. 821 * We want these devices to attach regardless of 822 * the device status and other restrictions. 823 */ 824 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 825 826 if (ad->ad_device != NULL) 827 continue; 828 829 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 830 continue; 831 832 if (acpi_match_hid(ad->ad_devinfo, acpi_early_ids) == 0) 833 continue; 834 835 aa.aa_node = ad; 836 aa.aa_iot = sc->sc_iot; 837 aa.aa_memt = sc->sc_memt; 838 aa.aa_pc = sc->sc_pc; 839 aa.aa_pciflags = sc->sc_pciflags; 840 aa.aa_ic = sc->sc_ic; 841 842 ad->ad_device = config_found_ia(sc->sc_dev, 843 "acpinodebus", &aa, acpi_print); 844 } 845} 846 847static void 848acpi_rescan_nodes(struct acpi_softc *sc) 849{ 850 const uint32_t ncpus = acpi_md_ncpus(); 851 struct acpi_attach_args aa; 852 struct acpi_devnode *ad; 853 ACPI_DEVICE_INFO *di; 854 855 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 856 857 if (ad->ad_device != NULL) 858 continue; 859 860 /* 861 * There is a bug in ACPICA: it defines the type 862 * of the scopes incorrectly for its own reasons. 863 */ 864 if (acpi_is_scope(ad) != false) 865 continue; 866 867 di = ad->ad_devinfo; 868 869 /* 870 * We only attach devices which are present, enabled, and 871 * functioning properly. However, if a device is enabled, 872 * it is decoding resources and we should claim these, 873 * if possible. This requires changes to bus_space(9). 874 * Note: there is a possible race condition, because _STA 875 * may have changed since di->CurrentStatus was set. 876 */ 877 if (di->Type == ACPI_TYPE_DEVICE) { 878 879 if ((di->Valid & ACPI_VALID_STA) != 0 && 880 (di->CurrentStatus & ACPI_STA_OK) != ACPI_STA_OK) 881 continue; 882 } 883 884 if (di->Type == ACPI_TYPE_POWER) 885 continue; 886 887 if (di->Type == ACPI_TYPE_PROCESSOR && acpi_cpus >= ncpus) 888 continue; 889 890 if (acpi_match_hid(di, acpi_early_ids) != 0) 891 continue; 892 893 if (acpi_match_hid(di, acpi_ignored_ids) != 0) 894 continue; 895 896 aa.aa_node = ad; 897 aa.aa_iot = sc->sc_iot; 898 aa.aa_memt = sc->sc_memt; 899 aa.aa_pc = sc->sc_pc; 900 aa.aa_pciflags = sc->sc_pciflags; 901 aa.aa_ic = sc->sc_ic; 902 903 ad->ad_device = config_found_ia(sc->sc_dev, 904 "acpinodebus", &aa, acpi_print); 905 } 906} 907 908static void 909acpi_rescan_capabilities(device_t self) 910{ 911 struct acpi_softc *sc = device_private(self); 912 struct acpi_devnode *ad; 913 ACPI_HANDLE tmp; 914 ACPI_STATUS rv; 915 916 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 917 918 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 919 continue; 920 921 /* 922 * Scan power resource capabilities. 923 * 924 * If any power states are supported, 925 * at least _PR0 and _PR3 must be present. 926 */ 927 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 928 929 if (ACPI_SUCCESS(rv)) { 930 ad->ad_flags |= ACPI_DEVICE_POWER; 931 acpi_power_add(ad); 932 } 933 934 /* 935 * Scan wake-up capabilities. 936 */ 937 rv = AcpiGetHandle(ad->ad_handle, "_PRW", &tmp); 938 939 if (ACPI_SUCCESS(rv)) { 940 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 941 acpi_wakedev_add(ad); 942 } 943 944 /* 945 * Scan docking stations. 946 */ 947 rv = AcpiGetHandle(ad->ad_handle, "_DCK", &tmp); 948 949 if (ACPI_SUCCESS(rv)) 950 ad->ad_flags |= ACPI_DEVICE_DOCK; 951 952 /* 953 * Scan devices that are ejectable. 954 */ 955 rv = AcpiGetHandle(ad->ad_handle, "_EJ0", &tmp); 956 957 if (ACPI_SUCCESS(rv)) 958 ad->ad_flags |= ACPI_DEVICE_EJECT; 959 } 960} 961 962static int 963acpi_print(void *aux, const char *pnp) 964{ 965 struct acpi_attach_args *aa = aux; 966 struct acpi_devnode *ad; 967 const char *hid, *uid; 968 ACPI_DEVICE_INFO *di; 969 970 ad = aa->aa_node; 971 di = ad->ad_devinfo; 972 973 hid = di->HardwareId.String; 974 uid = di->UniqueId.String; 975 976 if (pnp != NULL) { 977 978 if (di->Type != ACPI_TYPE_DEVICE) { 979 980 aprint_normal("%s (ACPI Object Type '%s') at %s", 981 ad->ad_name, AcpiUtGetTypeName(ad->ad_type), pnp); 982 983 return UNCONF; 984 } 985 986 if ((di->Valid & ACPI_VALID_HID) == 0 || hid == NULL) 987 return 0; 988 989 aprint_normal("%s (%s) ", ad->ad_name, hid); 990 acpi_print_dev(hid); 991 aprint_normal("at %s", pnp); 992 993 return UNCONF; 994 } 995 996 aprint_normal(" (%s", ad->ad_name); 997 998 if ((di->Valid & ACPI_VALID_HID) != 0 && hid != NULL) { 999 1000 aprint_normal(", %s", hid); 1001 1002 if ((di->Valid & ACPI_VALID_UID) != 0 && uid != NULL) { 1003 1004 if (uid[0] == '\0') 1005 uid = "<null>"; 1006 1007 aprint_normal("-%s", uid); 1008 } 1009 } 1010 1011 aprint_normal(")"); 1012 1013 return UNCONF; 1014} 1015 1016/* 1017 * Notify. 1018 */ 1019static void 1020acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1021{ 1022 struct acpi_softc *sc = acpi_softc; 1023 struct acpi_devnode *ad; 1024 1025 KASSERT(sc != NULL); 1026 KASSERT(aux == NULL); 1027 KASSERT(acpi_active != 0); 1028 1029 if (acpi_suspended != 0) 1030 return; 1031 1032 /* 1033 * System: 0x00 - 0x7F. 1034 * Device: 0x80 - 0xFF. 1035 */ 1036 switch (event) { 1037 1038 case ACPI_NOTIFY_BUS_CHECK: 1039 case ACPI_NOTIFY_DEVICE_CHECK: 1040 case ACPI_NOTIFY_DEVICE_WAKE: 1041 case ACPI_NOTIFY_EJECT_REQUEST: 1042 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1043 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1044 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1045 case ACPI_NOTIFY_POWER_FAULT: 1046 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1047 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1048 case ACPI_NOTIFY_RESERVED: 1049 case ACPI_NOTIFY_LOCALITY_UPDATE: 1050 break; 1051 } 1052 1053 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1054 "%s (%p)\n", event, acpi_name(handle), handle)); 1055 1056 /* 1057 * We deliver notifications only to drivers 1058 * that have been succesfully attached and 1059 * that have registered a handler with us. 1060 * The opaque pointer is always the device_t. 1061 */ 1062 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1063 1064 if (ad->ad_device == NULL) 1065 continue; 1066 1067 if (ad->ad_notify == NULL) 1068 continue; 1069 1070 if (ad->ad_handle != handle) 1071 continue; 1072 1073 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1074 1075 return; 1076 } 1077 1078 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1079 "for %s (%p)\n", event, acpi_name(handle), handle); 1080} 1081 1082bool 1083acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1084{ 1085 struct acpi_softc *sc = acpi_softc; 1086 1087 KASSERT(sc != NULL); 1088 KASSERT(acpi_active != 0); 1089 1090 if (acpi_suspended != 0) 1091 goto fail; 1092 1093 if (ad == NULL || notify == NULL) 1094 goto fail; 1095 1096 ad->ad_notify = notify; 1097 1098 return true; 1099 1100fail: 1101 aprint_error_dev(sc->sc_dev, "failed to register notify " 1102 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1103 1104 return false; 1105} 1106 1107void 1108acpi_deregister_notify(struct acpi_devnode *ad) 1109{ 1110 1111 ad->ad_notify = NULL; 1112} 1113 1114/* 1115 * Fixed buttons. 1116 */ 1117static void 1118acpi_register_fixed_button(struct acpi_softc *sc, int event) 1119{ 1120 struct sysmon_pswitch *smpsw; 1121 ACPI_STATUS rv; 1122 int type; 1123 1124 switch (event) { 1125 1126 case ACPI_EVENT_POWER_BUTTON: 1127 1128 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1129 return; 1130 1131 type = PSWITCH_TYPE_POWER; 1132 smpsw = &sc->sc_smpsw_power; 1133 break; 1134 1135 case ACPI_EVENT_SLEEP_BUTTON: 1136 1137 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1138 return; 1139 1140 type = PSWITCH_TYPE_SLEEP; 1141 smpsw = &sc->sc_smpsw_sleep; 1142 break; 1143 1144 default: 1145 rv = AE_TYPE; 1146 goto fail; 1147 } 1148 1149 smpsw->smpsw_type = type; 1150 smpsw->smpsw_name = device_xname(sc->sc_dev); 1151 1152 if (sysmon_pswitch_register(smpsw) != 0) { 1153 rv = AE_ERROR; 1154 goto fail; 1155 } 1156 1157 rv = AcpiInstallFixedEventHandler(event, 1158 acpi_fixed_button_handler, smpsw); 1159 1160 if (ACPI_FAILURE(rv)) { 1161 sysmon_pswitch_unregister(smpsw); 1162 goto fail; 1163 } 1164 1165 aprint_debug_dev(sc->sc_dev, "fixed %s button present\n", 1166 (type != ACPI_EVENT_SLEEP_BUTTON) ? "power" : "sleep"); 1167 1168 return; 1169 1170fail: 1171 aprint_error_dev(sc->sc_dev, "failed to register " 1172 "fixed event: %s\n", AcpiFormatException(rv)); 1173} 1174 1175static void 1176acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1177{ 1178 struct sysmon_pswitch *smpsw; 1179 ACPI_STATUS rv; 1180 1181 switch (event) { 1182 1183 case ACPI_EVENT_POWER_BUTTON: 1184 smpsw = &sc->sc_smpsw_power; 1185 1186 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1187 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1188 return; 1189 } 1190 1191 break; 1192 1193 case ACPI_EVENT_SLEEP_BUTTON: 1194 smpsw = &sc->sc_smpsw_sleep; 1195 1196 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1197 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1198 return; 1199 } 1200 1201 break; 1202 1203 default: 1204 rv = AE_TYPE; 1205 goto fail; 1206 } 1207 1208 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1209 1210 if (ACPI_SUCCESS(rv)) { 1211 sysmon_pswitch_unregister(smpsw); 1212 return; 1213 } 1214 1215fail: 1216 aprint_error_dev(sc->sc_dev, "failed to deregister " 1217 "fixed event: %s\n", AcpiFormatException(rv)); 1218} 1219 1220static uint32_t 1221acpi_fixed_button_handler(void *context) 1222{ 1223 static const int handler = OSL_NOTIFY_HANDLER; 1224 struct sysmon_pswitch *smpsw = context; 1225 1226 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1227 1228 return ACPI_INTERRUPT_HANDLED; 1229} 1230 1231static void 1232acpi_fixed_button_pressed(void *context) 1233{ 1234 struct sysmon_pswitch *smpsw = context; 1235 1236 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1237 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1238 "power" : "sleep")); 1239 1240 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1241} 1242 1243/* 1244 * Sleep. 1245 */ 1246static void 1247acpi_sleep_init(struct acpi_softc *sc) 1248{ 1249 uint8_t a, b, i; 1250 ACPI_STATUS rv; 1251 1252 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1253 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1254 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1255 1256 /* 1257 * Evaluate supported sleep states. 1258 */ 1259 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1260 1261 rv = AcpiGetSleepTypeData(i, &a, &b); 1262 1263 if (ACPI_SUCCESS(rv)) 1264 sc->sc_sleepstates |= __BIT(i); 1265 } 1266} 1267 1268/* 1269 * Must be called with interrupts enabled. 1270 */ 1271void 1272acpi_enter_sleep_state(int state) 1273{ 1274 struct acpi_softc *sc = acpi_softc; 1275 ACPI_STATUS rv; 1276 int err; 1277 1278 if (acpi_softc == NULL) 1279 return; 1280 1281 if (state == sc->sc_sleepstate) 1282 return; 1283 1284 if (state < ACPI_STATE_S0 || state > ACPI_STATE_S5) 1285 return; 1286 1287 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1288 1289 switch (state) { 1290 1291 case ACPI_STATE_S0: 1292 sc->sc_sleepstate = ACPI_STATE_S0; 1293 return; 1294 1295 case ACPI_STATE_S1: 1296 case ACPI_STATE_S2: 1297 case ACPI_STATE_S3: 1298 case ACPI_STATE_S4: 1299 1300 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1301 aprint_error_dev(sc->sc_dev, "sleep state " 1302 "S%d is not available\n", state); 1303 return; 1304 } 1305 1306 /* 1307 * Evaluate the _TTS method. This should be done before 1308 * pmf_system_suspend(9) and the evaluation of _PTS. 1309 * We should also re-evaluate this once we return to 1310 * S0 or if we abort the sleep state transition in the 1311 * middle (see ACPI 3.0, section 7.3.6). In reality, 1312 * however, the _TTS method is seldom seen in the field. 1313 */ 1314 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1315 1316 if (ACPI_SUCCESS(rv)) 1317 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1318 1319 if (state != ACPI_STATE_S1 && 1320 pmf_system_suspend(PMF_Q_NONE) != true) { 1321 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1322 break; 1323 } 1324 1325 /* 1326 * This will evaluate the _PTS and _SST methods, 1327 * but unlike the documentation claims, not _GTS, 1328 * which is evaluated in AcpiEnterSleepState(). 1329 * This must be called with interrupts enabled. 1330 */ 1331 rv = AcpiEnterSleepStatePrep(state); 1332 1333 if (ACPI_FAILURE(rv)) { 1334 aprint_error_dev(sc->sc_dev, "failed to prepare " 1335 "S%d: %s\n", state, AcpiFormatException(rv)); 1336 break; 1337 } 1338 1339 /* 1340 * After the _PTS method has been evaluated, we can 1341 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1342 */ 1343 acpi_wakedev_commit(sc, state); 1344 1345 sc->sc_sleepstate = state; 1346 1347 if (state == ACPI_STATE_S1) { 1348 1349 /* Just enter the state. */ 1350 acpi_md_OsDisableInterrupt(); 1351 rv = AcpiEnterSleepState(state); 1352 1353 if (ACPI_FAILURE(rv)) 1354 aprint_error_dev(sc->sc_dev, "failed to " 1355 "enter S1: %s\n", AcpiFormatException(rv)); 1356 1357 (void)AcpiLeaveSleepState(state); 1358 1359 } else { 1360 1361 err = acpi_md_sleep(state); 1362 1363 if (state == ACPI_STATE_S4) 1364 AcpiEnable(); 1365 1366 pmf_system_bus_resume(PMF_Q_NONE); 1367 (void)AcpiLeaveSleepState(state); 1368 pmf_system_resume(PMF_Q_NONE); 1369 } 1370 1371 break; 1372 1373 case ACPI_STATE_S5: 1374 1375 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1376 1377 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1378 1379 if (ACPI_FAILURE(rv)) { 1380 aprint_error_dev(sc->sc_dev, "failed to prepare " 1381 "S%d: %s\n", state, AcpiFormatException(rv)); 1382 break; 1383 } 1384 1385 (void)AcpiDisableAllGpes(); 1386 1387 DELAY(1000000); 1388 1389 sc->sc_sleepstate = state; 1390 acpi_md_OsDisableInterrupt(); 1391 1392 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1393 1394 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1395 1396 break; 1397 } 1398 1399 sc->sc_sleepstate = ACPI_STATE_S0; 1400 1401 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1402} 1403 1404/* 1405 * Sysctl. 1406 */ 1407SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1408{ 1409 const struct sysctlnode *mnode, *rnode, *snode; 1410 int err; 1411 1412 err = sysctl_createv(clog, 0, NULL, &rnode, 1413 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", 1414 NULL, NULL, 0, NULL, 0, 1415 CTL_HW, CTL_EOL); 1416 1417 if (err != 0) 1418 return; 1419 1420 err = sysctl_createv(clog, 0, &rnode, &rnode, 1421 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1422 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1423 NULL, 0, NULL, 0, 1424 CTL_CREATE, CTL_EOL); 1425 1426 if (err != 0) 1427 return; 1428 1429 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1430 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1431 "root", SYSCTL_DESCR("ACPI root pointer"), 1432 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1433 CTL_CREATE, CTL_EOL); 1434 1435 err = sysctl_createv(clog, 0, &rnode, &snode, 1436 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1437 "sleep", SYSCTL_DESCR("ACPI sleep"), 1438 NULL, 0, NULL, 0, 1439 CTL_CREATE, CTL_EOL); 1440 1441 if (err != 0) 1442 return; 1443 1444 (void)sysctl_createv(NULL, 0, &snode, NULL, 1445 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1446 "state", SYSCTL_DESCR("System sleep state"), 1447 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1448 CTL_CREATE, CTL_EOL); 1449 1450 (void)sysctl_createv(NULL, 0, &snode, NULL, 1451 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1452 "states", SYSCTL_DESCR("Supported sleep states"), 1453 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1454 CTL_CREATE, CTL_EOL); 1455 1456 /* 1457 * For the time being, machdep.sleep_state 1458 * is provided for backwards compatibility. 1459 */ 1460 err = sysctl_createv(NULL, 0, NULL, &mnode, 1461 CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep", 1462 NULL, NULL, 0, NULL, 0, 1463 CTL_MACHDEP, CTL_EOL); 1464 1465 if (err == 0) { 1466 1467 (void)sysctl_createv(NULL, 0, &mnode, NULL, 1468 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1469 "sleep_state", SYSCTL_DESCR("System sleep state"), 1470 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1471 CTL_CREATE, CTL_EOL); 1472 } 1473 1474 err = sysctl_createv(clog, 0, &rnode, &rnode, 1475 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1476 "stat", SYSCTL_DESCR("ACPI statistics"), 1477 NULL, 0, NULL, 0, 1478 CTL_CREATE, CTL_EOL); 1479 1480 if (err != 0) 1481 return; 1482 1483 (void)sysctl_createv(clog, 0, &rnode, NULL, 1484 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1485 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1486 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1487 CTL_CREATE, CTL_EOL); 1488 1489 (void)sysctl_createv(clog, 0, &rnode, NULL, 1490 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1491 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1492 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1493 CTL_CREATE, CTL_EOL); 1494 1495 (void)sysctl_createv(clog, 0, &rnode, NULL, 1496 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1497 "fixed", SYSCTL_DESCR("Number of fixed events"), 1498 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1499 CTL_CREATE, CTL_EOL); 1500 1501 (void)sysctl_createv(clog, 0, &rnode, NULL, 1502 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1503 "method", SYSCTL_DESCR("Number of methods executed"), 1504 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1505 CTL_CREATE, CTL_EOL); 1506 1507 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1508 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1509} 1510 1511static int 1512sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1513{ 1514 struct sysctlnode node; 1515 uint64_t t; 1516 int err, i; 1517 1518 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1519 t += AcpiFixedEventCount[i]; 1520 1521 node = *rnode; 1522 node.sysctl_data = &t; 1523 1524 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1525 1526 if (err || newp == NULL) 1527 return err; 1528 1529 return 0; 1530} 1531 1532static int 1533sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1534{ 1535 struct acpi_softc *sc = acpi_softc; 1536 struct sysctlnode node; 1537 int err, t; 1538 1539 if (acpi_softc == NULL) 1540 return ENOSYS; 1541 1542 node = *rnode; 1543 t = sc->sc_sleepstate; 1544 node.sysctl_data = &t; 1545 1546 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1547 1548 if (err || newp == NULL) 1549 return err; 1550 1551 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1552 return EINVAL; 1553 1554 acpi_enter_sleep_state(t); 1555 1556 return 0; 1557} 1558 1559static int 1560sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1561{ 1562 struct acpi_softc *sc = acpi_softc; 1563 struct sysctlnode node; 1564 char t[3 * 6 + 1]; 1565 int err; 1566 1567 if (acpi_softc == NULL) 1568 return ENOSYS; 1569 1570 (void)memset(t, '\0', sizeof(t)); 1571 1572 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1573 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1574 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1575 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1576 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1577 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1578 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1579 1580 node = *rnode; 1581 node.sysctl_data = &t; 1582 1583 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1584 1585 if (err || newp == NULL) 1586 return err; 1587 1588 return 0; 1589} 1590 1591/* 1592 * Tables. 1593 */ 1594ACPI_PHYSICAL_ADDRESS 1595acpi_OsGetRootPointer(void) 1596{ 1597 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1598 1599 /* 1600 * We let MD code handle this since there are multiple ways to do it: 1601 * 1602 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1603 * 1604 * IA-64: Use the EFI. 1605 */ 1606 PhysicalAddress = acpi_md_OsGetRootPointer(); 1607 1608 if (acpi_root_pointer == 0) 1609 acpi_root_pointer = PhysicalAddress; 1610 1611 return PhysicalAddress; 1612} 1613 1614static ACPI_TABLE_HEADER * 1615acpi_map_rsdt(void) 1616{ 1617 ACPI_PHYSICAL_ADDRESS paddr; 1618 ACPI_TABLE_RSDP *rsdp; 1619 1620 paddr = AcpiOsGetRootPointer(); 1621 1622 if (paddr == 0) 1623 return NULL; 1624 1625 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1626 1627 if (rsdp == NULL) 1628 return NULL; 1629 1630 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1631 paddr = rsdp->XsdtPhysicalAddress; 1632 else 1633 paddr = rsdp->RsdtPhysicalAddress; 1634 1635 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1636 1637 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1638} 1639 1640static void 1641acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1642{ 1643 1644 if (rsdt == NULL) 1645 return; 1646 1647 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1648} 1649 1650/* 1651 * XXX: Refactor to be a generic function that maps tables. 1652 */ 1653ACPI_STATUS 1654acpi_madt_map(void) 1655{ 1656 ACPI_STATUS rv; 1657 1658 if (madt_header != NULL) 1659 return AE_ALREADY_EXISTS; 1660 1661 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); 1662 1663 if (ACPI_FAILURE(rv)) 1664 return rv; 1665 1666 return AE_OK; 1667} 1668 1669void 1670acpi_madt_unmap(void) 1671{ 1672 madt_header = NULL; 1673} 1674 1675/* 1676 * XXX: Refactor to be a generic function that walks tables. 1677 */ 1678void 1679acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) 1680{ 1681 ACPI_SUBTABLE_HEADER *hdrp; 1682 char *madtend, *where; 1683 1684 madtend = (char *)madt_header + madt_header->Length; 1685 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); 1686 1687 while (where < madtend) { 1688 1689 hdrp = (ACPI_SUBTABLE_HEADER *)where; 1690 1691 if (ACPI_FAILURE(func(hdrp, aux))) 1692 break; 1693 1694 where += hdrp->Length; 1695 } 1696} 1697 1698/* 1699 * Miscellaneous. 1700 */ 1701static bool 1702acpi_is_scope(struct acpi_devnode *ad) 1703{ 1704 int i; 1705 1706 /* 1707 * Return true if the node is a root scope. 1708 */ 1709 if (ad->ad_parent == NULL) 1710 return false; 1711 1712 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1713 return false; 1714 1715 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1716 1717 if (acpi_scopes[i] == NULL) 1718 continue; 1719 1720 if (ad->ad_handle == acpi_scopes[i]) 1721 return true; 1722 } 1723 1724 return false; 1725} 1726 1727/* 1728 * ACPIVERBOSE. 1729 */ 1730void 1731acpi_load_verbose(void) 1732{ 1733 1734 if (acpi_verbose_loaded == 0) 1735 module_autoload("acpiverbose", MODULE_CLASS_MISC); 1736} 1737 1738void 1739acpi_print_verbose_stub(struct acpi_softc *sc) 1740{ 1741 1742 acpi_load_verbose(); 1743 1744 if (acpi_verbose_loaded != 0) 1745 acpi_print_verbose(sc); 1746} 1747 1748void 1749acpi_print_dev_stub(const char *pnpstr) 1750{ 1751 1752 acpi_load_verbose(); 1753 1754 if (acpi_verbose_loaded != 0) 1755 acpi_print_dev(pnpstr); 1756} 1757 1758/* 1759 * ACPI_ACTIVATE_DEV. 1760 */ 1761static void 1762acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 1763{ 1764 1765#ifndef ACPI_ACTIVATE_DEV 1766 return; 1767} 1768#else 1769 static const int valid = ACPI_VALID_STA | ACPI_VALID_HID; 1770 ACPI_DEVICE_INFO *newdi; 1771 ACPI_STATUS rv; 1772 uint32_t old; 1773 1774 /* 1775 * If the device is valid and present, 1776 * but not enabled, try to activate it. 1777 */ 1778 if (((*di)->Valid & valid) != valid) 1779 return; 1780 1781 old = (*di)->CurrentStatus; 1782 1783 if ((old & (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED)) != 1784 ACPI_STA_DEVICE_PRESENT) 1785 return; 1786 1787 rv = acpi_allocate_resources(handle); 1788 1789 if (ACPI_FAILURE(rv)) 1790 goto fail; 1791 1792 rv = AcpiGetObjectInfo(handle, &newdi); 1793 1794 if (ACPI_FAILURE(rv)) 1795 goto fail; 1796 1797 ACPI_FREE(*di); 1798 *di = newdi; 1799 1800 aprint_verbose_dev(acpi_softc->sc_dev, 1801 "%s activated, STA 0x%08X -> STA 0x%08X\n", 1802 (*di)->HardwareId.String, old, (*di)->CurrentStatus); 1803 1804 return; 1805 1806fail: 1807 aprint_error_dev(acpi_softc->sc_dev, "failed to " 1808 "activate %s\n", (*di)->HardwareId.String); 1809} 1810 1811/* 1812 * XXX: This very incomplete. 1813 */ 1814ACPI_STATUS 1815acpi_allocate_resources(ACPI_HANDLE handle) 1816{ 1817 ACPI_BUFFER bufp, bufc, bufn; 1818 ACPI_RESOURCE *resp, *resc, *resn; 1819 ACPI_RESOURCE_IRQ *irq; 1820 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 1821 ACPI_STATUS rv; 1822 uint delta; 1823 1824 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 1825 if (ACPI_FAILURE(rv)) 1826 goto out; 1827 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 1828 if (ACPI_FAILURE(rv)) { 1829 goto out1; 1830 } 1831 1832 bufn.Length = 1000; 1833 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 1834 resp = bufp.Pointer; 1835 resc = bufc.Pointer; 1836 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 1837 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1838 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 1839 resp = ACPI_NEXT_RESOURCE(resp); 1840 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 1841 break; 1842 /* Found identical Id */ 1843 resn->Type = resc->Type; 1844 switch (resc->Type) { 1845 case ACPI_RESOURCE_TYPE_IRQ: 1846 memcpy(&resn->Data, &resp->Data, 1847 sizeof(ACPI_RESOURCE_IRQ)); 1848 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 1849 irq->Interrupts[0] = 1850 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 1851 Interrupts[irq->InterruptCount-1]; 1852 irq->InterruptCount = 1; 1853 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 1854 break; 1855 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 1856 memcpy(&resn->Data, &resp->Data, 1857 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 1858 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 1859#if 0 1860 /* 1861 * XXX: Not duplicating the interrupt logic above 1862 * because its not clear what it accomplishes. 1863 */ 1864 xirq->Interrupts[0] = 1865 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 1866 Interrupts[irq->NumberOfInterrupts-1]; 1867 xirq->NumberOfInterrupts = 1; 1868#endif 1869 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 1870 break; 1871 case ACPI_RESOURCE_TYPE_IO: 1872 memcpy(&resn->Data, &resp->Data, 1873 sizeof(ACPI_RESOURCE_IO)); 1874 resn->Length = resp->Length; 1875 break; 1876 default: 1877 aprint_error_dev(acpi_softc->sc_dev, 1878 "%s: invalid type %u\n", __func__, resc->Type); 1879 rv = AE_BAD_DATA; 1880 goto out2; 1881 } 1882 resc = ACPI_NEXT_RESOURCE(resc); 1883 resn = ACPI_NEXT_RESOURCE(resn); 1884 resp = ACPI_NEXT_RESOURCE(resp); 1885 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 1886 if (delta >= 1887 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 1888 bufn.Length *= 2; 1889 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 1890 M_ACPI, M_WAITOK); 1891 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 1892 delta); 1893 } 1894 } 1895 1896 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1897 aprint_error_dev(acpi_softc->sc_dev, 1898 "%s: resc not exhausted\n", __func__); 1899 rv = AE_BAD_DATA; 1900 goto out3; 1901 } 1902 1903 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 1904 rv = AcpiSetCurrentResources(handle, &bufn); 1905 1906 if (ACPI_FAILURE(rv)) 1907 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 1908 "resources: %s\n", __func__, AcpiFormatException(rv)); 1909 1910out3: 1911 free(bufn.Pointer, M_ACPI); 1912out2: 1913 ACPI_FREE(bufc.Pointer); 1914out1: 1915 ACPI_FREE(bufp.Pointer); 1916out: 1917 return rv; 1918} 1919 1920#endif /* ACPI_ACTIVATE_DEV */ 1921