acpi.c revision 1.199
1/* $NetBSD: acpi.c,v 1.199 2010/06/06 10:44:40 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 2001, 2003 Wasabi Systems, Inc. 34 * All rights reserved. 35 * 36 * Written by Jason R. Thorpe 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#include <sys/cdefs.h> 68__KERNEL_RCSID(0, "$NetBSD: acpi.c,v 1.199 2010/06/06 10:44:40 jruoho Exp $"); 69 70#include "opt_acpi.h" 71#include "opt_pcifixup.h" 72 73#include <sys/param.h> 74#include <sys/device.h> 75#include <sys/kernel.h> 76#include <sys/malloc.h> 77#include <sys/module.h> 78#include <sys/mutex.h> 79#include <sys/sysctl.h> 80#include <sys/systm.h> 81 82#include <dev/acpi/acpireg.h> 83#include <dev/acpi/acpivar.h> 84#include <dev/acpi/acpi_osd.h> 85#include <dev/acpi/acpi_pci.h> 86#include <dev/acpi/acpi_power.h> 87#include <dev/acpi/acpi_timer.h> 88#include <dev/acpi/acpi_wakedev.h> 89 90#define _COMPONENT ACPI_BUS_COMPONENT 91ACPI_MODULE_NAME ("acpi") 92 93#if defined(ACPI_PCI_FIXUP) 94#error The option ACPI_PCI_FIXUP has been obsoleted by PCI_INTR_FIXUP_DISABLED. Please adjust your kernel configuration file. 95#endif 96 97#ifdef PCI_INTR_FIXUP_DISABLED 98#include <dev/pci/pcidevs.h> 99#endif 100 101MALLOC_DECLARE(M_ACPI); 102 103#include <machine/acpi_machdep.h> 104 105#ifdef ACPI_DEBUGGER 106#define ACPI_DBGR_INIT 0x01 107#define ACPI_DBGR_TABLES 0x02 108#define ACPI_DBGR_ENABLE 0x04 109#define ACPI_DBGR_PROBE 0x08 110#define ACPI_DBGR_RUNNING 0x10 111 112static int acpi_dbgr = 0x00; 113#endif 114 115/* 116 * This is a flag we set when the ACPI subsystem is active. Machine 117 * dependent code may wish to skip other steps (such as attaching 118 * subsystems that ACPI supercedes) when ACPI is active. 119 */ 120int acpi_active; 121int acpi_force_load; 122int acpi_suspended = 0; 123 124struct acpi_softc *acpi_softc; 125static uint64_t acpi_root_pointer; 126extern kmutex_t acpi_interrupt_list_mtx; 127static ACPI_HANDLE acpi_scopes[4]; 128 129/* 130 * This structure provides a context for the ACPI 131 * namespace walk performed in acpi_build_tree(). 132 */ 133struct acpi_walkcontext { 134 struct acpi_softc *aw_sc; 135 struct acpi_devnode *aw_parent; 136}; 137 138/* 139 * Ignored HIDs. 140 */ 141static const char * const acpi_ignored_ids[] = { 142#if defined(i386) || defined(x86_64) 143 "PNP0000", /* AT interrupt controller is handled internally */ 144 "PNP0200", /* AT DMA controller is handled internally */ 145 "PNP0A??", /* PCI Busses are handled internally */ 146 "PNP0B00", /* AT RTC is handled internally */ 147 "PNP0C01", /* No "System Board" driver */ 148 "PNP0C02", /* No "PnP motherboard register resources" driver */ 149 "PNP0C0B", /* No need for "ACPI fan" driver */ 150 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 151 "IFX0102", /* No driver for Infineon TPM */ 152 "INT0800", /* No driver for Intel Firmware Hub device */ 153#endif 154#if defined(x86_64) 155 "PNP0C04", /* FPU is handled internally */ 156#endif 157 NULL 158}; 159 160static int acpi_match(device_t, cfdata_t, void *); 161static int acpi_submatch(device_t, cfdata_t, const int *, void *); 162static void acpi_attach(device_t, device_t, void *); 163static int acpi_detach(device_t, int); 164static void acpi_childdet(device_t, device_t); 165static bool acpi_suspend(device_t, const pmf_qual_t *); 166static bool acpi_resume(device_t, const pmf_qual_t *); 167 168static void acpi_build_tree(struct acpi_softc *); 169static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, 170 void *, void **); 171static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t, 172 void *, void **); 173 174#ifdef ACPI_ACTIVATE_DEV 175static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **); 176static ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE); 177#endif 178 179static int acpi_rescan(device_t, const char *, const int *); 180static void acpi_rescan1(struct acpi_softc *, 181 const char *, const int *); 182static void acpi_rescan_nodes(struct acpi_softc *); 183static void acpi_rescan_capabilities(struct acpi_softc *); 184static int acpi_print(void *aux, const char *); 185 186static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); 187 188static void acpi_register_fixed_button(struct acpi_softc *, int); 189static void acpi_deregister_fixed_button(struct acpi_softc *, int); 190static uint32_t acpi_fixed_button_handler(void *); 191static void acpi_fixed_button_pressed(void *); 192 193static void acpi_sleep_init(struct acpi_softc *); 194 195static int sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS); 196static int sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS); 197static int sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS); 198 199static bool acpi_is_scope(struct acpi_devnode *); 200static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 201static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 202 203extern struct cfdriver acpi_cd; 204 205/* Handle routine vectors and loading for acpiverbose module */ 206void acpi_verbose_ctl(bool load); 207void acpi_null(void); 208 209void (*acpi_print_devnodes)(struct acpi_softc *) = (void *)acpi_null; 210void (*acpi_print_tree)(struct acpi_devnode *, uint32_t) = (void *)acpi_null; 211void (*acpi_print_dev)(const char *) = (void *)acpi_null; 212void (*acpi_wmidump)(void *) = (void *)acpi_null; 213 214/* acpiverbose support */ 215void 216acpi_null(void) 217{ 218 /* Nothing to do */ 219} 220 221void 222acpi_verbose_ctl(bool load) 223{ 224 static int loaded = 0; 225 226 if (load) { 227 if (loaded++ == 0) 228 if (module_load("acpiverbose", MODCTL_LOAD_FORCE, 229 NULL, MODULE_CLASS_MISC) != 0) 230 loaded = 0; 231 return; 232 } 233 if (loaded == 0) 234 return; 235 if (--loaded == 0) 236 module_unload("acpiverbose"); 237} 238 239 240CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 241 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 242 243/* 244 * Probe for ACPI support. 245 * 246 * This is called by the machine-dependent ACPI front-end. 247 * Note: this is not an autoconfiguration interface function. 248 */ 249int 250acpi_probe(void) 251{ 252 ACPI_TABLE_HEADER *rsdt; 253 const char *func; 254 static int once; 255 bool initialized; 256 ACPI_STATUS rv; 257 258 if (once != 0) 259 panic("%s: already probed", __func__); 260 261 once = 1; 262 func = NULL; 263 initialized = false; 264 265 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 266 267 /* 268 * Start up ACPICA. 269 */ 270#ifdef ACPI_DEBUGGER 271 if (acpi_dbgr & ACPI_DBGR_INIT) 272 acpi_osd_debugger(); 273#endif 274 275 CTASSERT(TRUE == true); 276 CTASSERT(FALSE == false); 277 278 AcpiGbl_AllMethodsSerialized = false; 279 AcpiGbl_EnableInterpreterSlack = true; 280 281 rv = AcpiInitializeSubsystem(); 282 283 if (ACPI_SUCCESS(rv)) 284 initialized = true; 285 else { 286 func = "AcpiInitializeSubsystem()"; 287 goto fail; 288 } 289 290 /* 291 * Allocate space for RSDT/XSDT and DSDT, 292 * but allow resizing if more tables exist. 293 */ 294 rv = AcpiInitializeTables(NULL, 2, true); 295 296 if (ACPI_FAILURE(rv)) { 297 func = "AcpiInitializeTables()"; 298 goto fail; 299 } 300 301#ifdef ACPI_DEBUGGER 302 if (acpi_dbgr & ACPI_DBGR_TABLES) 303 acpi_osd_debugger(); 304#endif 305 306 rv = AcpiLoadTables(); 307 308 if (ACPI_FAILURE(rv)) { 309 func = "AcpiLoadTables()"; 310 goto fail; 311 } 312 313 rsdt = acpi_map_rsdt(); 314 315 if (rsdt == NULL) { 316 func = "acpi_map_rsdt()"; 317 rv = AE_ERROR; 318 goto fail; 319 } 320 321 if (acpi_force_load == 0 && (acpi_find_quirks() & ACPI_QUIRK_BROKEN)) { 322 aprint_normal("ACPI: BIOS is listed as broken:\n"); 323 aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 324 "AslId <%4.4s,%08x>\n", 325 rsdt->OemId, rsdt->OemTableId, 326 rsdt->OemRevision, 327 rsdt->AslCompilerId, 328 rsdt->AslCompilerRevision); 329 aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n"); 330 acpi_unmap_rsdt(rsdt); 331 AcpiTerminate(); 332 return 0; 333 } 334 335 acpi_unmap_rsdt(rsdt); 336 337 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 338 339 if (ACPI_FAILURE(rv)) { 340 func = "AcpiEnableSubsystem()"; 341 goto fail; 342 } 343 344 /* 345 * Looks like we have ACPI! 346 */ 347 return 1; 348 349fail: 350 KASSERT(rv != AE_OK); 351 KASSERT(func != NULL); 352 353 aprint_error("%s: failed to probe ACPI: %s\n", 354 func, AcpiFormatException(rv)); 355 356 if (initialized != false) 357 (void)AcpiTerminate(); 358 359 return 0; 360} 361 362int 363acpi_check(device_t parent, const char *ifattr) 364{ 365 return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); 366} 367 368/* 369 * Autoconfiguration. 370 */ 371static int 372acpi_match(device_t parent, cfdata_t match, void *aux) 373{ 374 /* 375 * XXX: Nada; MD code has called acpi_probe(). 376 */ 377 return 1; 378} 379 380static int 381acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 382{ 383 struct cfattach *ca; 384 385 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 386 387 return (ca == &acpi_ca); 388} 389 390static void 391acpi_attach(device_t parent, device_t self, void *aux) 392{ 393 struct acpi_softc *sc = device_private(self); 394 struct acpibus_attach_args *aa = aux; 395 ACPI_TABLE_HEADER *rsdt; 396 ACPI_STATUS rv; 397 398 aprint_naive("\n"); 399 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 400 401 if (acpi_softc != NULL) 402 panic("%s: already attached", __func__); 403 404 acpi_verbose_ctl(true); 405 406 rsdt = acpi_map_rsdt(); 407 408 if (rsdt == NULL) 409 aprint_error_dev(self, "X/RSDT: Not found\n"); 410 else { 411 aprint_verbose_dev(self, 412 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 413 rsdt->OemId, rsdt->OemTableId, 414 rsdt->OemRevision, 415 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 416 } 417 418 acpi_unmap_rsdt(rsdt); 419 420 sc->sc_dev = self; 421 sc->sc_root = NULL; 422 423 sc->sc_sleepstate = ACPI_STATE_S0; 424 sc->sc_quirks = acpi_find_quirks(); 425 426 sysmon_power_settype("acpi"); 427 428 sc->sc_iot = aa->aa_iot; 429 sc->sc_memt = aa->aa_memt; 430 sc->sc_pc = aa->aa_pc; 431 sc->sc_pciflags = aa->aa_pciflags; 432 sc->sc_ic = aa->aa_ic; 433 434 SIMPLEQ_INIT(&sc->ad_head); 435 436 acpi_softc = sc; 437 438 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) 439 aprint_error_dev(self, "couldn't establish power handler\n"); 440 441 /* 442 * Bring ACPI on-line. 443 */ 444#ifdef ACPI_DEBUGGER 445 if (acpi_dbgr & ACPI_DBGR_ENABLE) 446 acpi_osd_debugger(); 447#endif 448 449#define ACPI_ENABLE_PHASE1 \ 450 (ACPI_NO_HANDLER_INIT | ACPI_NO_EVENT_INIT) 451#define ACPI_ENABLE_PHASE2 \ 452 (ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE | \ 453 ACPI_NO_ADDRESS_SPACE_INIT) 454 455 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE1); 456 457 if (ACPI_FAILURE(rv)) 458 goto fail; 459 460 acpi_md_callback(); 461 462 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE2); 463 464 if (ACPI_FAILURE(rv)) 465 goto fail; 466 467 /* 468 * Early EC handler initialization if ECDT table is available. 469 */ 470 config_found_ia(self, "acpiecdtbus", aa, NULL); 471 472 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 473 474 if (ACPI_FAILURE(rv)) 475 goto fail; 476 477 /* 478 * Install global notify handlers. 479 */ 480 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 481 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 482 483 if (ACPI_FAILURE(rv)) 484 goto fail; 485 486 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 487 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 488 489 if (ACPI_FAILURE(rv)) 490 goto fail; 491 492 acpi_active = 1; 493 494 /* Show SCI interrupt. */ 495 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 496 AcpiGbl_FADT.SciInterrupt); 497 498 /* 499 * Install fixed-event handlers. 500 */ 501 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 502 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 503 504 acpitimer_init(); 505 506#ifdef ACPI_DEBUGGER 507 if (acpi_dbgr & ACPI_DBGR_PROBE) 508 acpi_osd_debugger(); 509#endif 510 511 /* 512 * Scan the namespace and build our device tree. 513 */ 514 acpi_build_tree(sc); 515 acpi_sleep_init(sc); 516 517#ifdef ACPI_DEBUGGER 518 if (acpi_dbgr & ACPI_DBGR_RUNNING) 519 acpi_osd_debugger(); 520#endif 521 522#ifdef ACPI_DEBUG 523 acpi_debug_init(); 524#endif 525 526 return; 527 528fail: 529 KASSERT(rv != AE_OK); 530 531 aprint_error("%s: failed to initialize ACPI: %s\n", 532 __func__, AcpiFormatException(rv)); 533} 534 535/* 536 * XXX: This is incomplete. 537 */ 538static int 539acpi_detach(device_t self, int flags) 540{ 541 struct acpi_softc *sc = device_private(self); 542 ACPI_STATUS rv; 543 int rc; 544 545 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 546 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 547 548 if (ACPI_FAILURE(rv)) 549 return EBUSY; 550 551 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 552 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 553 554 if (ACPI_FAILURE(rv)) 555 return EBUSY; 556 557 if ((rc = config_detach_children(self, flags)) != 0) 558 return rc; 559 560 if ((rc = acpitimer_detach()) != 0) 561 return rc; 562 563 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 564 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 565 566 pmf_device_deregister(self); 567 568 acpi_softc = NULL; 569 570 acpi_verbose_ctl(false); 571 572 return 0; 573} 574 575/* 576 * XXX: Need to reclaim any resources? Yes. 577 */ 578static void 579acpi_childdet(device_t self, device_t child) 580{ 581 struct acpi_softc *sc = device_private(self); 582 struct acpi_devnode *ad; 583 584 if (sc->sc_apmbus == child) 585 sc->sc_apmbus = NULL; 586 587 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 588 589 if (ad->ad_device == child) 590 ad->ad_device = NULL; 591 } 592} 593 594static bool 595acpi_suspend(device_t dv, const pmf_qual_t *qual) 596{ 597 598 acpi_suspended = 1; 599 600 return true; 601} 602 603static bool 604acpi_resume(device_t dv, const pmf_qual_t *qual) 605{ 606 607 acpi_suspended = 0; 608 609 return true; 610} 611 612/* 613 * Namespace scan. 614 */ 615static void 616acpi_build_tree(struct acpi_softc *sc) 617{ 618 struct acpi_walkcontext awc; 619 620 /* 621 * Get the root scope handles. 622 */ 623 KASSERT(__arraycount(acpi_scopes) == 4); 624 625 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 626 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 627 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 628 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 629 630 /* 631 * Make the root node. 632 */ 633 awc.aw_sc = sc; 634 awc.aw_parent = NULL; 635 636 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 637 638 KASSERT(sc->sc_root == NULL); 639 KASSERT(awc.aw_parent != NULL); 640 641 sc->sc_root = awc.aw_parent; 642 643 /* 644 * Build the internal namespace. 645 */ 646 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 647 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 648 649 /* 650 * Scan the internal namespace. 651 */ 652 acpi_rescan1(sc, NULL, NULL); 653 acpi_rescan_capabilities(sc); 654 655 (void)acpi_pcidev_scan(sc->sc_root); 656 657 acpi_print_devnodes(sc); 658 acpi_print_tree(sc->sc_root, 0); 659} 660 661static ACPI_STATUS 662acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 663 void *context, void **status) 664{ 665 struct acpi_walkcontext *awc = context; 666 struct acpi_softc *sc = awc->aw_sc; 667 struct acpi_devnode *ad; 668 ACPI_DEVICE_INFO *devinfo; 669 ACPI_OBJECT_TYPE type; 670 ACPI_NAME_UNION *anu; 671 ACPI_STATUS rv; 672 int clear, i; 673 674 rv = AcpiGetObjectInfo(handle, &devinfo); 675 676 if (ACPI_FAILURE(rv)) 677 return AE_OK; /* Do not terminate the walk. */ 678 679 type = devinfo->Type; 680 681 switch (type) { 682 683 case ACPI_TYPE_DEVICE: 684 685#ifdef ACPI_ACTIVATE_DEV 686 acpi_activate_device(handle, &devinfo); 687#endif 688 689 case ACPI_TYPE_PROCESSOR: 690 case ACPI_TYPE_THERMAL: 691 case ACPI_TYPE_POWER: 692 693 ad = malloc(sizeof(*ad), M_ACPI, M_NOWAIT | M_ZERO); 694 695 if (ad == NULL) 696 return AE_NO_MEMORY; 697 698 ad->ad_device = NULL; 699 ad->ad_notify = NULL; 700 ad->ad_pciinfo = NULL; 701 702 ad->ad_type = type; 703 ad->ad_handle = handle; 704 ad->ad_devinfo = devinfo; 705 706 ad->ad_root = sc->sc_dev; 707 ad->ad_parent = awc->aw_parent; 708 709 anu = (ACPI_NAME_UNION *)&devinfo->Name; 710 ad->ad_name[4] = '\0'; 711 712 for (i = 3, clear = 0; i >= 0; i--) { 713 714 if (clear == 0 && anu->Ascii[i] == '_') 715 ad->ad_name[i] = '\0'; 716 else { 717 ad->ad_name[i] = anu->Ascii[i]; 718 clear = 1; 719 } 720 } 721 722 if (ad->ad_name[0] == '\0') 723 ad->ad_name[0] = '_'; 724 725 SIMPLEQ_INIT(&ad->ad_child_head); 726 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 727 728 if (ad->ad_parent != NULL) { 729 730 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 731 ad, ad_child_list); 732 } 733 734 awc->aw_parent = ad; 735 } 736 737 return AE_OK; 738} 739 740static ACPI_STATUS 741acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 742 void *context, void **status) 743{ 744 struct acpi_walkcontext *awc = context; 745 746 KASSERT(awc != NULL); 747 KASSERT(awc->aw_parent != NULL); 748 749 if (handle == awc->aw_parent->ad_handle) 750 awc->aw_parent = awc->aw_parent->ad_parent; 751 752 return AE_OK; 753} 754 755#ifdef ACPI_ACTIVATE_DEV 756static void 757acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 758{ 759 static const int valid = ACPI_VALID_STA | ACPI_VALID_HID; 760 ACPI_DEVICE_INFO *newdi; 761 ACPI_STATUS rv; 762 uint32_t old; 763 764 /* 765 * If the device is valid and present, 766 * but not enabled, try to activate it. 767 */ 768 if (((*di)->Valid & valid) != valid) 769 return; 770 771 old = (*di)->CurrentStatus; 772 773 if ((old & (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED)) != 774 ACPI_STA_DEVICE_PRESENT) 775 return; 776 777 rv = acpi_allocate_resources(handle); 778 779 if (ACPI_FAILURE(rv)) 780 goto fail; 781 782 rv = AcpiGetObjectInfo(handle, &newdi); 783 784 if (ACPI_FAILURE(rv)) 785 goto fail; 786 787 ACPI_FREE(*di); 788 *di = newdi; 789 790 aprint_verbose_dev(acpi_softc->sc_dev, 791 "%s activated, STA 0x%08X -> STA 0x%08X\n", 792 (*di)->HardwareId.String, old, (*di)->CurrentStatus); 793 794 return; 795 796fail: 797 aprint_error_dev(acpi_softc->sc_dev, "failed to " 798 "activate %s\n", (*di)->HardwareId.String); 799} 800 801/* 802 * XXX: This very incomplete. 803 */ 804ACPI_STATUS 805acpi_allocate_resources(ACPI_HANDLE handle) 806{ 807 ACPI_BUFFER bufp, bufc, bufn; 808 ACPI_RESOURCE *resp, *resc, *resn; 809 ACPI_RESOURCE_IRQ *irq; 810 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 811 ACPI_STATUS rv; 812 uint delta; 813 814 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 815 if (ACPI_FAILURE(rv)) 816 goto out; 817 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 818 if (ACPI_FAILURE(rv)) { 819 goto out1; 820 } 821 822 bufn.Length = 1000; 823 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 824 resp = bufp.Pointer; 825 resc = bufc.Pointer; 826 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 827 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 828 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 829 resp = ACPI_NEXT_RESOURCE(resp); 830 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 831 break; 832 /* Found identical Id */ 833 resn->Type = resc->Type; 834 switch (resc->Type) { 835 case ACPI_RESOURCE_TYPE_IRQ: 836 memcpy(&resn->Data, &resp->Data, 837 sizeof(ACPI_RESOURCE_IRQ)); 838 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 839 irq->Interrupts[0] = 840 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 841 Interrupts[irq->InterruptCount-1]; 842 irq->InterruptCount = 1; 843 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 844 break; 845 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 846 memcpy(&resn->Data, &resp->Data, 847 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 848 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 849#if 0 850 /* 851 * XXX: Not duplicating the interrupt logic above 852 * because its not clear what it accomplishes. 853 */ 854 xirq->Interrupts[0] = 855 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 856 Interrupts[irq->NumberOfInterrupts-1]; 857 xirq->NumberOfInterrupts = 1; 858#endif 859 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 860 break; 861 case ACPI_RESOURCE_TYPE_IO: 862 memcpy(&resn->Data, &resp->Data, 863 sizeof(ACPI_RESOURCE_IO)); 864 resn->Length = resp->Length; 865 break; 866 default: 867 aprint_error_dev(acpi_softc->sc_dev, 868 "%s: invalid type %u\n", __func__, resc->Type); 869 rv = AE_BAD_DATA; 870 goto out2; 871 } 872 resc = ACPI_NEXT_RESOURCE(resc); 873 resn = ACPI_NEXT_RESOURCE(resn); 874 resp = ACPI_NEXT_RESOURCE(resp); 875 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 876 if (delta >= 877 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 878 bufn.Length *= 2; 879 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 880 M_ACPI, M_WAITOK); 881 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 882 delta); 883 } 884 } 885 886 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 887 aprint_error_dev(acpi_softc->sc_dev, 888 "%s: resc not exhausted\n", __func__); 889 rv = AE_BAD_DATA; 890 goto out3; 891 } 892 893 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 894 rv = AcpiSetCurrentResources(handle, &bufn); 895 896 if (ACPI_FAILURE(rv)) 897 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 898 "resources: %s\n", __func__, AcpiFormatException(rv)); 899 900out3: 901 free(bufn.Pointer, M_ACPI); 902out2: 903 ACPI_FREE(bufc.Pointer); 904out1: 905 ACPI_FREE(bufp.Pointer); 906out: 907 return rv; 908} 909#endif /* ACPI_ACTIVATE_DEV */ 910 911/* 912 * Device attachment. 913 */ 914static int 915acpi_rescan(device_t self, const char *ifattr, const int *locators) 916{ 917 struct acpi_softc *sc = device_private(self); 918 919 acpi_rescan1(sc, ifattr, locators); 920 921 return 0; 922} 923 924static void 925acpi_rescan1(struct acpi_softc *sc, const char *ifattr, const int *locators) 926{ 927 928 if (ifattr_match(ifattr, "acpinodebus")) 929 acpi_rescan_nodes(sc); 930 931 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 932 sc->sc_apmbus = config_found_ia(sc->sc_dev, 933 "acpiapmbus", NULL, NULL); 934} 935 936static void 937acpi_rescan_nodes(struct acpi_softc *sc) 938{ 939 struct acpi_attach_args aa; 940 struct acpi_devnode *ad; 941 ACPI_DEVICE_INFO *di; 942 943 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 944 945 if (ad->ad_device != NULL) 946 continue; 947 948 /* 949 * There is a bug in ACPICA: it defines the type 950 * of the scopes incorrectly for its own reasons. 951 */ 952 if (acpi_is_scope(ad) != false) 953 continue; 954 955 di = ad->ad_devinfo; 956 957 /* 958 * We only attach devices which are present, enabled, and 959 * functioning properly. However, if a device is enabled, 960 * it is decoding resources and we should claim these, 961 * if possible. This requires changes to bus_space(9). 962 */ 963 if (di->Type == ACPI_TYPE_DEVICE) { 964 965 if ((di->Valid & ACPI_VALID_STA) != 0 && 966 (di->CurrentStatus & ACPI_STA_OK) != ACPI_STA_OK) 967 continue; 968 } 969 970 /* 971 * The same problem as above. As for example 972 * thermal zones and power resources do not 973 * have a valid HID, only evaluate devices. 974 */ 975 if (di->Type == ACPI_TYPE_DEVICE && 976 (di->Valid & ACPI_VALID_HID) == 0) 977 continue; 978 979 /* 980 * Handled internally. 981 */ 982 if (di->Type == ACPI_TYPE_PROCESSOR) 983 continue; 984 985 /* 986 * Ditto, but bind power resources. 987 */ 988 if (di->Type == ACPI_TYPE_POWER) { 989 acpi_power_res_add(ad); 990 continue; 991 } 992 993 /* 994 * Skip ignored HIDs. 995 */ 996 if (acpi_match_hid(di, acpi_ignored_ids)) 997 continue; 998 999 aa.aa_node = ad; 1000 aa.aa_iot = sc->sc_iot; 1001 aa.aa_memt = sc->sc_memt; 1002 aa.aa_pc = sc->sc_pc; 1003 aa.aa_pciflags = sc->sc_pciflags; 1004 aa.aa_ic = sc->sc_ic; 1005 1006 ad->ad_device = config_found_ia(sc->sc_dev, 1007 "acpinodebus", &aa, acpi_print); 1008 } 1009} 1010 1011static void 1012acpi_rescan_capabilities(struct acpi_softc *sc) 1013{ 1014 struct acpi_devnode *ad; 1015 ACPI_HANDLE tmp; 1016 ACPI_STATUS rv; 1017 1018 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1019 1020 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 1021 continue; 1022 1023 /* 1024 * Scan power resource capabilities. 1025 * 1026 * If any power states are supported, 1027 * at least _PR0 and _PR3 must be present. 1028 */ 1029 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 1030 1031 if (ACPI_SUCCESS(rv)) { 1032 ad->ad_flags |= ACPI_DEVICE_POWER; 1033 acpi_power_add(ad); 1034 } 1035 1036 /* 1037 * Scan wake-up capabilities. 1038 */ 1039 rv = AcpiGetHandle(ad->ad_handle, "_PRW", &tmp); 1040 1041 if (ACPI_SUCCESS(rv)) { 1042 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 1043 acpi_wakedev_add(ad); 1044 } 1045 } 1046} 1047 1048static int 1049acpi_print(void *aux, const char *pnp) 1050{ 1051 struct acpi_attach_args *aa = aux; 1052 ACPI_STATUS rv; 1053 1054 if (pnp) { 1055 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1056 char *pnpstr = 1057 aa->aa_node->ad_devinfo->HardwareId.String; 1058 ACPI_BUFFER buf; 1059 1060 aprint_normal("%s (%s) ", aa->aa_node->ad_name, 1061 pnpstr); 1062 1063 rv = acpi_eval_struct(aa->aa_node->ad_handle, 1064 "_STR", &buf); 1065 if (ACPI_SUCCESS(rv)) { 1066 ACPI_OBJECT *obj = buf.Pointer; 1067 switch (obj->Type) { 1068 case ACPI_TYPE_STRING: 1069 aprint_normal("[%s] ", obj->String.Pointer); 1070 break; 1071 case ACPI_TYPE_BUFFER: 1072 aprint_normal("buffer %p ", obj->Buffer.Pointer); 1073 break; 1074 default: 1075 aprint_normal("type %u ",obj->Type); 1076 break; 1077 } 1078 ACPI_FREE(buf.Pointer); 1079 } 1080 else 1081 acpi_print_dev(pnpstr); 1082 1083 aprint_normal("at %s", pnp); 1084 } else if (aa->aa_node->ad_devinfo->Type != ACPI_TYPE_DEVICE) { 1085 aprint_normal("%s (ACPI Object Type '%s' " 1086 "[0x%02x]) ", aa->aa_node->ad_name, 1087 AcpiUtGetTypeName(aa->aa_node->ad_devinfo->Type), 1088 aa->aa_node->ad_devinfo->Type); 1089 aprint_normal("at %s", pnp); 1090 } else 1091 return 0; 1092 } else { 1093 aprint_normal(" (%s", aa->aa_node->ad_name); 1094 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1095 aprint_normal(", %s", aa->aa_node->ad_devinfo->HardwareId.String); 1096 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_UID) { 1097 const char *uid; 1098 1099 uid = aa->aa_node->ad_devinfo->UniqueId.String; 1100 if (uid[0] == '\0') 1101 uid = "<null>"; 1102 aprint_normal("-%s", uid); 1103 } 1104 } 1105 aprint_normal(")"); 1106 } 1107 1108 return UNCONF; 1109} 1110 1111/* 1112 * Notify. 1113 */ 1114static void 1115acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1116{ 1117 struct acpi_softc *sc = acpi_softc; 1118 struct acpi_devnode *ad; 1119 1120 KASSERT(sc != NULL); 1121 KASSERT(aux == NULL); 1122 KASSERT(acpi_active != 0); 1123 1124 if (acpi_suspended != 0) 1125 return; 1126 1127 /* 1128 * System: 0x00 - 0x7F. 1129 * Device: 0x80 - 0xFF. 1130 */ 1131 switch (event) { 1132 1133 case ACPI_NOTIFY_BUS_CHECK: 1134 case ACPI_NOTIFY_DEVICE_CHECK: 1135 case ACPI_NOTIFY_DEVICE_WAKE: 1136 case ACPI_NOTIFY_EJECT_REQUEST: 1137 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1138 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1139 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1140 case ACPI_NOTIFY_POWER_FAULT: 1141 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1142 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1143 case ACPI_NOTIFY_RESERVED: 1144 case ACPI_NOTIFY_LOCALITY_UPDATE: 1145 break; 1146 } 1147 1148 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1149 "%s (%p)\n", event, acpi_name(handle), handle)); 1150 1151 /* 1152 * We deliver notifications only to drivers 1153 * that have been succesfully attached and 1154 * that have registered a handler with us. 1155 * The opaque pointer is always the device_t. 1156 */ 1157 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1158 1159 if (ad->ad_device == NULL) 1160 continue; 1161 1162 if (ad->ad_notify == NULL) 1163 continue; 1164 1165 if (ad->ad_handle != handle) 1166 continue; 1167 1168 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1169 1170 return; 1171 } 1172 1173 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1174 "for %s (%p)\n", event, acpi_name(handle), handle); 1175} 1176 1177bool 1178acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1179{ 1180 struct acpi_softc *sc = acpi_softc; 1181 1182 KASSERT(sc != NULL); 1183 KASSERT(acpi_active != 0); 1184 1185 if (acpi_suspended != 0) 1186 goto fail; 1187 1188 if (ad == NULL || notify == NULL) 1189 goto fail; 1190 1191 ad->ad_notify = notify; 1192 1193 return true; 1194 1195fail: 1196 aprint_error_dev(sc->sc_dev, "failed to register notify " 1197 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1198 1199 return false; 1200} 1201 1202void 1203acpi_deregister_notify(struct acpi_devnode *ad) 1204{ 1205 1206 ad->ad_notify = NULL; 1207} 1208 1209/* 1210 * Fixed buttons. 1211 */ 1212static void 1213acpi_register_fixed_button(struct acpi_softc *sc, int event) 1214{ 1215 struct sysmon_pswitch *smpsw; 1216 ACPI_STATUS rv; 1217 int type; 1218 1219 switch (event) { 1220 1221 case ACPI_EVENT_POWER_BUTTON: 1222 1223 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1224 return; 1225 1226 type = PSWITCH_TYPE_POWER; 1227 smpsw = &sc->sc_smpsw_power; 1228 break; 1229 1230 case ACPI_EVENT_SLEEP_BUTTON: 1231 1232 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1233 return; 1234 1235 type = PSWITCH_TYPE_SLEEP; 1236 smpsw = &sc->sc_smpsw_sleep; 1237 break; 1238 1239 default: 1240 rv = AE_TYPE; 1241 goto fail; 1242 } 1243 1244 smpsw->smpsw_type = type; 1245 smpsw->smpsw_name = device_xname(sc->sc_dev); 1246 1247 if (sysmon_pswitch_register(smpsw) != 0) { 1248 rv = AE_ERROR; 1249 goto fail; 1250 } 1251 1252 rv = AcpiInstallFixedEventHandler(event, 1253 acpi_fixed_button_handler, smpsw); 1254 1255 if (ACPI_FAILURE(rv)) { 1256 sysmon_pswitch_unregister(smpsw); 1257 goto fail; 1258 } 1259 1260 aprint_debug_dev(sc->sc_dev, "fixed %s button present\n", 1261 (type != ACPI_EVENT_SLEEP_BUTTON) ? "power" : "sleep"); 1262 1263 return; 1264 1265fail: 1266 aprint_error_dev(sc->sc_dev, "failed to register " 1267 "fixed event: %s\n", AcpiFormatException(rv)); 1268} 1269 1270static void 1271acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1272{ 1273 struct sysmon_pswitch *smpsw; 1274 ACPI_STATUS rv; 1275 1276 switch (event) { 1277 1278 case ACPI_EVENT_POWER_BUTTON: 1279 smpsw = &sc->sc_smpsw_power; 1280 1281 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1282 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1283 return; 1284 } 1285 1286 break; 1287 1288 case ACPI_EVENT_SLEEP_BUTTON: 1289 smpsw = &sc->sc_smpsw_sleep; 1290 1291 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1292 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1293 return; 1294 } 1295 1296 break; 1297 1298 default: 1299 rv = AE_TYPE; 1300 goto fail; 1301 } 1302 1303 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1304 1305 if (ACPI_SUCCESS(rv)) { 1306 sysmon_pswitch_unregister(smpsw); 1307 return; 1308 } 1309 1310fail: 1311 aprint_error_dev(sc->sc_dev, "failed to deregister " 1312 "fixed event: %s\n", AcpiFormatException(rv)); 1313} 1314 1315static uint32_t 1316acpi_fixed_button_handler(void *context) 1317{ 1318 static const int handler = OSL_NOTIFY_HANDLER; 1319 struct sysmon_pswitch *smpsw = context; 1320 1321 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1322 1323 return ACPI_INTERRUPT_HANDLED; 1324} 1325 1326static void 1327acpi_fixed_button_pressed(void *context) 1328{ 1329 struct sysmon_pswitch *smpsw = context; 1330 1331 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1332 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1333 "power" : "sleep")); 1334 1335 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1336} 1337 1338/* 1339 * Sleep. 1340 */ 1341static void 1342acpi_sleep_init(struct acpi_softc *sc) 1343{ 1344 uint8_t a, b, i; 1345 ACPI_STATUS rv; 1346 1347 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1348 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1349 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1350 1351 /* 1352 * Evaluate supported sleep states. 1353 */ 1354 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1355 1356 rv = AcpiGetSleepTypeData(i, &a, &b); 1357 1358 if (ACPI_SUCCESS(rv)) 1359 sc->sc_sleepstates |= __BIT(i); 1360 } 1361} 1362 1363void 1364acpi_enter_sleep_state(struct acpi_softc *sc, int state) 1365{ 1366 ACPI_STATUS rv; 1367 int err; 1368 1369 if (state == sc->sc_sleepstate) 1370 return; 1371 1372 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1373 1374 switch (state) { 1375 1376 case ACPI_STATE_S0: 1377 sc->sc_sleepstate = ACPI_STATE_S0; 1378 return; 1379 1380 case ACPI_STATE_S1: 1381 case ACPI_STATE_S2: 1382 case ACPI_STATE_S3: 1383 case ACPI_STATE_S4: 1384 1385 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1386 aprint_error_dev(sc->sc_dev, "sleep state " 1387 "S%d is not available\n", state); 1388 return; 1389 } 1390 1391 /* 1392 * Evaluate the _TTS method. This should be done before 1393 * pmf_system_suspend(9) and the evaluation of _PTS. 1394 * We should also re-evaluate this once we return to 1395 * S0 or if we abort the sleep state transition in the 1396 * middle (see ACPI 3.0, section 7.3.6). In reality, 1397 * however, the _TTS method is seldom seen in the field. 1398 */ 1399 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1400 1401 if (ACPI_SUCCESS(rv)) 1402 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1403 1404 acpi_wakedev_commit(sc, state); 1405 1406 if (state != ACPI_STATE_S1 && 1407 pmf_system_suspend(PMF_Q_NONE) != true) { 1408 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1409 break; 1410 } 1411 1412 /* 1413 * This will evaluate the _PTS and _SST methods, 1414 * but unlike the documentation claims, not _GTS, 1415 * which is evaluated in AcpiEnterSleepState(). 1416 * 1417 * This must be called with interrupts enabled. 1418 */ 1419 rv = AcpiEnterSleepStatePrep(state); 1420 1421 if (ACPI_FAILURE(rv)) { 1422 aprint_error_dev(sc->sc_dev, "failed to prepare " 1423 "S%d: %s\n", state, AcpiFormatException(rv)); 1424 break; 1425 } 1426 1427 sc->sc_sleepstate = state; 1428 1429 if (state == ACPI_STATE_S1) { 1430 1431 /* Just enter the state. */ 1432 acpi_md_OsDisableInterrupt(); 1433 rv = AcpiEnterSleepState(state); 1434 1435 if (ACPI_FAILURE(rv)) 1436 aprint_error_dev(sc->sc_dev, "failed to " 1437 "enter S1: %s\n", AcpiFormatException(rv)); 1438 1439 (void)AcpiLeaveSleepState(state); 1440 1441 } else { 1442 1443 err = acpi_md_sleep(state); 1444 1445 if (state == ACPI_STATE_S4) 1446 AcpiEnable(); 1447 1448 pmf_system_bus_resume(PMF_Q_NONE); 1449 (void)AcpiLeaveSleepState(state); 1450 pmf_system_resume(PMF_Q_NONE); 1451 } 1452 1453 break; 1454 1455 case ACPI_STATE_S5: 1456 1457 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1458 1459 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1460 1461 if (ACPI_FAILURE(rv)) { 1462 aprint_error_dev(sc->sc_dev, "failed to prepare " 1463 "S%d: %s\n", state, AcpiFormatException(rv)); 1464 break; 1465 } 1466 1467 DELAY(1000000); 1468 1469 sc->sc_sleepstate = state; 1470 acpi_md_OsDisableInterrupt(); 1471 1472 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1473 1474 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1475 1476 break; 1477 } 1478 1479 sc->sc_sleepstate = ACPI_STATE_S0; 1480 1481 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1482} 1483 1484/* 1485 * Sysctl. 1486 */ 1487SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1488{ 1489 const struct sysctlnode *mnode, *rnode; 1490 int err; 1491 1492 err = sysctl_createv(clog, 0, NULL, &rnode, 1493 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", 1494 NULL, NULL, 0, NULL, 0, 1495 CTL_HW, CTL_EOL); 1496 1497 if (err != 0) 1498 return; 1499 1500 err = sysctl_createv(clog, 0, &rnode, &rnode, 1501 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1502 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1503 NULL, 0, NULL, 0, 1504 CTL_CREATE, CTL_EOL); 1505 1506 if (err != 0) 1507 return; 1508 1509 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1510 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1511 "root", SYSCTL_DESCR("ACPI root pointer"), 1512 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1513 CTL_CREATE, CTL_EOL); 1514 1515 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1516 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1517 "supported_states", SYSCTL_DESCR("Supported system states"), 1518 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1519 CTL_CREATE, CTL_EOL); 1520 1521 err = sysctl_createv(NULL, 0, NULL, &mnode, 1522 CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep", 1523 NULL, NULL, 0, NULL, 0, 1524 CTL_MACHDEP, CTL_EOL); 1525 1526 if (err == 0) { 1527 1528 (void)sysctl_createv(NULL, 0, &mnode, NULL, 1529 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1530 "sleep_state", SYSCTL_DESCR("System sleep state"), 1531 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1532 CTL_CREATE, CTL_EOL); 1533 } 1534 1535 err = sysctl_createv(clog, 0, &rnode, &rnode, 1536 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1537 "stat", SYSCTL_DESCR("ACPI statistics"), 1538 NULL, 0, NULL, 0, 1539 CTL_CREATE, CTL_EOL); 1540 1541 if (err != 0) 1542 return; 1543 1544 (void)sysctl_createv(clog, 0, &rnode, NULL, 1545 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1546 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1547 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1548 CTL_CREATE, CTL_EOL); 1549 1550 (void)sysctl_createv(clog, 0, &rnode, NULL, 1551 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1552 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1553 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1554 CTL_CREATE, CTL_EOL); 1555 1556 (void)sysctl_createv(clog, 0, &rnode, NULL, 1557 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1558 "fixed", SYSCTL_DESCR("Number of fixed events"), 1559 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1560 CTL_CREATE, CTL_EOL); 1561 1562 (void)sysctl_createv(clog, 0, &rnode, NULL, 1563 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1564 "method", SYSCTL_DESCR("Number of methods executed"), 1565 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1566 CTL_CREATE, CTL_EOL); 1567 1568 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1569 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1570} 1571 1572static int 1573sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1574{ 1575 struct sysctlnode node; 1576 uint64_t t; 1577 int err, i; 1578 1579 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1580 t += AcpiFixedEventCount[i]; 1581 1582 node = *rnode; 1583 node.sysctl_data = &t; 1584 1585 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1586 1587 if (err || newp == NULL) 1588 return err; 1589 1590 return 0; 1591} 1592 1593static int 1594sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1595{ 1596 struct acpi_softc *sc = acpi_softc; 1597 struct sysctlnode node; 1598 int err, t; 1599 1600 if (acpi_softc == NULL) 1601 return ENOSYS; 1602 1603 node = *rnode; 1604 t = sc->sc_sleepstate; 1605 node.sysctl_data = &t; 1606 1607 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1608 1609 if (err || newp == NULL) 1610 return err; 1611 1612 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1613 return EINVAL; 1614 1615 acpi_enter_sleep_state(sc, t); 1616 1617 return 0; 1618} 1619 1620static int 1621sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1622{ 1623 struct acpi_softc *sc = acpi_softc; 1624 struct sysctlnode node; 1625 char t[3 * 6 + 1]; 1626 int err; 1627 1628 if (acpi_softc == NULL) 1629 return ENOSYS; 1630 1631 (void)memset(t, '\0', sizeof(t)); 1632 1633 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1634 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1635 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1636 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1637 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1638 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1639 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1640 1641 node = *rnode; 1642 node.sysctl_data = &t; 1643 1644 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1645 1646 if (err || newp == NULL) 1647 return err; 1648 1649 return 0; 1650} 1651 1652/* 1653 * Miscellaneous. 1654 */ 1655static bool 1656acpi_is_scope(struct acpi_devnode *ad) 1657{ 1658 int i; 1659 1660 /* 1661 * Return true if the node is a root scope. 1662 */ 1663 if (ad->ad_parent == NULL) 1664 return false; 1665 1666 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1667 return false; 1668 1669 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1670 1671 if (acpi_scopes[i] == NULL) 1672 continue; 1673 1674 if (ad->ad_handle == acpi_scopes[i]) 1675 return true; 1676 } 1677 1678 return false; 1679} 1680 1681ACPI_PHYSICAL_ADDRESS 1682acpi_OsGetRootPointer(void) 1683{ 1684 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1685 1686 /* 1687 * We let MD code handle this since there are multiple ways to do it: 1688 * 1689 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1690 * 1691 * IA-64: Use the EFI. 1692 */ 1693 PhysicalAddress = acpi_md_OsGetRootPointer(); 1694 1695 if (acpi_root_pointer == 0) 1696 acpi_root_pointer = PhysicalAddress; 1697 1698 return PhysicalAddress; 1699} 1700 1701static ACPI_TABLE_HEADER * 1702acpi_map_rsdt(void) 1703{ 1704 ACPI_PHYSICAL_ADDRESS paddr; 1705 ACPI_TABLE_RSDP *rsdp; 1706 1707 paddr = AcpiOsGetRootPointer(); 1708 1709 if (paddr == 0) 1710 return NULL; 1711 1712 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1713 1714 if (rsdp == NULL) 1715 return NULL; 1716 1717 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1718 paddr = rsdp->XsdtPhysicalAddress; 1719 else 1720 paddr = rsdp->RsdtPhysicalAddress; 1721 1722 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1723 1724 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1725} 1726 1727static void 1728acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1729{ 1730 1731 if (rsdt == NULL) 1732 return; 1733 1734 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1735} 1736