acpi.c revision 1.244
1/* $NetBSD: acpi.c,v 1.244 2011/06/13 09:37:23 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 1.244 2011/06/13 09:37:23 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/kmem.h> 112#include <sys/malloc.h> 113#include <sys/module.h> 114#include <sys/mutex.h> 115#include <sys/sysctl.h> 116#include <sys/systm.h> 117#include <sys/timetc.h> 118 119#include <dev/acpi/acpireg.h> 120#include <dev/acpi/acpivar.h> 121#include <dev/acpi/acpi_osd.h> 122#include <dev/acpi/acpi_pci.h> 123#include <dev/acpi/acpi_power.h> 124#include <dev/acpi/acpi_timer.h> 125#include <dev/acpi/acpi_wakedev.h> 126 127#include <machine/acpi_machdep.h> 128 129#define _COMPONENT ACPI_BUS_COMPONENT 130ACPI_MODULE_NAME ("acpi") 131 132/* 133 * The acpi_active variable is set when the ACPI subsystem is active. 134 * Machine-dependent code may wish to skip other steps (such as attaching 135 * subsystems that ACPI supercedes) when ACPI is active. 136 */ 137int acpi_active = 0; 138int acpi_suspended = 0; 139int acpi_force_load = 0; 140int acpi_verbose_loaded = 0; 141 142struct acpi_softc *acpi_softc = NULL; 143static uint64_t acpi_root_pointer; 144extern kmutex_t acpi_interrupt_list_mtx; 145extern struct cfdriver acpi_cd; 146static ACPI_HANDLE acpi_scopes[4]; 147ACPI_TABLE_HEADER *madt_header; 148 149/* 150 * This structure provides a context for the ACPI 151 * namespace walk performed in acpi_build_tree(). 152 */ 153struct acpi_walkcontext { 154 struct acpi_softc *aw_sc; 155 struct acpi_devnode *aw_parent; 156}; 157 158/* 159 * Ignored HIDs. 160 */ 161static const char * const acpi_ignored_ids[] = { 162#if defined(i386) || defined(x86_64) 163 "ACPI0007", /* ACPI CPUs do not attach to acpi(4) */ 164 "PNP0000", /* AT interrupt controller is handled internally */ 165 "PNP0200", /* AT DMA controller is handled internally */ 166 "PNP0A??", /* PCI Busses are handled internally */ 167 "PNP0B00", /* AT RTC is handled internally */ 168 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 169#endif 170#if defined(x86_64) 171 "PNP0C04", /* FPU is handled internally */ 172#endif 173 NULL 174}; 175 176/* 177 * Devices that should be attached early. 178 */ 179static const char * const acpi_early_ids[] = { 180 "PNP0C09", /* acpiec(4) */ 181 NULL 182}; 183 184static int acpi_match(device_t, cfdata_t, void *); 185static int acpi_submatch(device_t, cfdata_t, const int *, void *); 186static void acpi_attach(device_t, device_t, void *); 187static int acpi_detach(device_t, int); 188static void acpi_childdet(device_t, device_t); 189static bool acpi_suspend(device_t, const pmf_qual_t *); 190static bool acpi_resume(device_t, const pmf_qual_t *); 191 192static void acpi_build_tree(struct acpi_softc *); 193static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, 194 void *, void **); 195static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t, 196 void *, void **); 197static void acpi_make_name(struct acpi_devnode *, uint32_t); 198 199static int acpi_rescan(device_t, const char *, const int *); 200static void acpi_rescan_early(struct acpi_softc *); 201static void acpi_rescan_nodes(struct acpi_softc *); 202static void acpi_rescan_capabilities(device_t); 203static int acpi_print(void *aux, const char *); 204 205static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); 206 207static void acpi_register_fixed_button(struct acpi_softc *, int); 208static void acpi_deregister_fixed_button(struct acpi_softc *, int); 209static uint32_t acpi_fixed_button_handler(void *); 210static void acpi_fixed_button_pressed(void *); 211 212static void acpi_sleep_init(struct acpi_softc *); 213 214static int sysctl_hw_acpi_fixedstats(SYSCTLFN_PROTO); 215static int sysctl_hw_acpi_sleepstate(SYSCTLFN_PROTO); 216static int sysctl_hw_acpi_sleepstates(SYSCTLFN_PROTO); 217 218static bool acpi_is_scope(struct acpi_devnode *); 219static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 220static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 221 222void acpi_print_verbose_stub(struct acpi_softc *); 223void acpi_print_dev_stub(const char *); 224 225static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **); 226ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE); 227 228void (*acpi_print_verbose)(struct acpi_softc *) = acpi_print_verbose_stub; 229void (*acpi_print_dev)(const char *) = acpi_print_dev_stub; 230 231CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 232 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 233 234/* 235 * Probe for ACPI support. 236 * 237 * This is called by the machine-dependent ACPI front-end. 238 * Note: this is not an autoconfiguration interface function. 239 */ 240int 241acpi_probe(void) 242{ 243 ACPI_TABLE_HEADER *rsdt; 244 ACPI_STATUS rv; 245 int quirks; 246 247 if (acpi_softc != NULL) 248 panic("%s: already probed", __func__); 249 250 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 251 252 /* 253 * Start up ACPICA. 254 */ 255 AcpiGbl_AllMethodsSerialized = false; 256 AcpiGbl_EnableInterpreterSlack = true; 257 258 rv = AcpiInitializeSubsystem(); 259 260 if (ACPI_FAILURE(rv)) { 261 aprint_error("%s: failed to initialize subsystem\n", __func__); 262 return 0; 263 } 264 265 /* 266 * Allocate space for RSDT/XSDT and DSDT, 267 * but allow resizing if more tables exist. 268 */ 269 rv = AcpiInitializeTables(NULL, 2, true); 270 271 if (ACPI_FAILURE(rv)) { 272 aprint_error("%s: failed to initialize tables\n", __func__); 273 goto fail; 274 } 275 276 rv = AcpiLoadTables(); 277 278 if (ACPI_FAILURE(rv)) { 279 aprint_error("%s: failed to load tables\n", __func__); 280 goto fail; 281 } 282 283 rsdt = acpi_map_rsdt(); 284 285 if (rsdt == NULL) { 286 aprint_error("%s: failed to map RSDT\n", __func__); 287 goto fail; 288 } 289 290 quirks = acpi_find_quirks(); 291 292 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_BROKEN) != 0) { 293 294 aprint_normal("ACPI: BIOS is listed as broken:\n"); 295 aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 296 "AslId <%4.4s,%08x>\n", rsdt->OemId, rsdt->OemTableId, 297 rsdt->OemRevision, rsdt->AslCompilerId, 298 rsdt->AslCompilerRevision); 299 aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n"); 300 301 acpi_unmap_rsdt(rsdt); 302 goto fail; 303 } 304 305 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_OLDBIOS) != 0) { 306 307 aprint_normal("ACPI: BIOS is too old (%s). " 308 "Set acpi_force_load to use.\n", 309 pmf_get_platform("firmware-date")); 310 311 acpi_unmap_rsdt(rsdt); 312 goto fail; 313 } 314 315 acpi_unmap_rsdt(rsdt); 316 317 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 318 319 if (ACPI_FAILURE(rv)) { 320 aprint_error("%s: failed to enable subsystem\n", __func__); 321 goto fail; 322 } 323 324 return 1; 325 326fail: 327 (void)AcpiTerminate(); 328 329 return 0; 330} 331 332void 333acpi_disable(void) 334{ 335 336 if (acpi_softc == NULL) 337 return; 338 339 KASSERT(acpi_active != 0); 340 341 if (AcpiGbl_FADT.SmiCommand != 0) 342 AcpiDisable(); 343} 344 345int 346acpi_check(device_t parent, const char *ifattr) 347{ 348 return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); 349} 350 351/* 352 * Autoconfiguration. 353 */ 354static int 355acpi_match(device_t parent, cfdata_t match, void *aux) 356{ 357 /* 358 * XXX: Nada; MD code has called acpi_probe(). 359 */ 360 return 1; 361} 362 363static int 364acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 365{ 366 struct cfattach *ca; 367 368 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 369 370 return (ca == &acpi_ca); 371} 372 373static void 374acpi_attach(device_t parent, device_t self, void *aux) 375{ 376 struct acpi_softc *sc = device_private(self); 377 struct acpibus_attach_args *aa = aux; 378 ACPI_TABLE_HEADER *rsdt; 379 ACPI_STATUS rv; 380 381 aprint_naive("\n"); 382 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 383 384 if (acpi_softc != NULL) 385 panic("%s: already attached", __func__); 386 387 rsdt = acpi_map_rsdt(); 388 389 if (rsdt == NULL) 390 aprint_error_dev(self, "X/RSDT: Not found\n"); 391 else { 392 aprint_verbose_dev(self, 393 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 394 rsdt->OemId, rsdt->OemTableId, 395 rsdt->OemRevision, 396 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 397 } 398 399 acpi_unmap_rsdt(rsdt); 400 401 sc->sc_dev = self; 402 sc->sc_root = NULL; 403 404 sc->sc_sleepstate = ACPI_STATE_S0; 405 sc->sc_quirks = acpi_find_quirks(); 406 407 sysmon_power_settype("acpi"); 408 409 sc->sc_iot = aa->aa_iot; 410 sc->sc_memt = aa->aa_memt; 411 sc->sc_pc = aa->aa_pc; 412 sc->sc_pciflags = aa->aa_pciflags; 413 sc->sc_ic = aa->aa_ic; 414 415 SIMPLEQ_INIT(&sc->ad_head); 416 417 acpi_softc = sc; 418 419 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) 420 aprint_error_dev(self, "couldn't establish power handler\n"); 421 422 /* 423 * Bring ACPICA on-line. 424 */ 425#define ACPI_ENABLE_PHASE1 \ 426 (ACPI_NO_HANDLER_INIT | ACPI_NO_EVENT_INIT) 427#define ACPI_ENABLE_PHASE2 \ 428 (ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE | \ 429 ACPI_NO_ADDRESS_SPACE_INIT) 430 431 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE1); 432 433 if (ACPI_FAILURE(rv)) 434 goto fail; 435 436 acpi_md_callback(); 437 438 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE2); 439 440 if (ACPI_FAILURE(rv)) 441 goto fail; 442 443 /* 444 * Early initialization of acpiec(4) via ECDT. 445 */ 446 (void)config_found_ia(self, "acpiecdtbus", aa, NULL); 447 448 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 449 450 if (ACPI_FAILURE(rv)) 451 goto fail; 452 453 /* 454 * Early initialization of the _PDC control method 455 * that may load additional SSDT tables dynamically. 456 */ 457 (void)acpi_md_pdc(); 458 459 /* 460 * Install global notify handlers. 461 */ 462 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 463 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 464 465 if (ACPI_FAILURE(rv)) 466 goto fail; 467 468 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 469 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 470 471 if (ACPI_FAILURE(rv)) 472 goto fail; 473 474 acpi_active = 1; 475 476 /* Show SCI interrupt. */ 477 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 478 AcpiGbl_FADT.SciInterrupt); 479 480 /* 481 * Install fixed-event handlers. 482 */ 483 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 484 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 485 486 acpitimer_init(sc); 487 488 /* 489 * Scan the namespace and build our device tree. 490 */ 491 acpi_build_tree(sc); 492 acpi_sleep_init(sc); 493 494#ifdef ACPI_DEBUG 495 acpi_debug_init(); 496#endif 497 498 /* 499 * Print debug information. 500 */ 501 acpi_print_verbose(sc); 502 503 return; 504 505fail: 506 aprint_error("%s: failed to initialize ACPI: %s\n", 507 __func__, AcpiFormatException(rv)); 508} 509 510/* 511 * XXX: This is incomplete. 512 */ 513static int 514acpi_detach(device_t self, int flags) 515{ 516 struct acpi_softc *sc = device_private(self); 517 ACPI_STATUS rv; 518 int rc; 519 520 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 521 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 522 523 if (ACPI_FAILURE(rv)) 524 return EBUSY; 525 526 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 527 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 528 529 if (ACPI_FAILURE(rv)) 530 return EBUSY; 531 532 if ((rc = config_detach_children(self, flags)) != 0) 533 return rc; 534 535 if ((rc = acpitimer_detach()) != 0) 536 return rc; 537 538 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 539 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 540 541 pmf_device_deregister(self); 542 543 acpi_softc = NULL; 544 545 return 0; 546} 547 548static void 549acpi_childdet(device_t self, device_t child) 550{ 551 struct acpi_softc *sc = device_private(self); 552 struct acpi_devnode *ad; 553 554 if (sc->sc_apmbus == child) 555 sc->sc_apmbus = NULL; 556 557 if (sc->sc_wdrt == child) 558 sc->sc_wdrt = NULL; 559 560 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 561 562 if (ad->ad_device == child) 563 ad->ad_device = NULL; 564 } 565} 566 567static bool 568acpi_suspend(device_t dv, const pmf_qual_t *qual) 569{ 570 571 acpi_suspended = 1; 572 573 return true; 574} 575 576static bool 577acpi_resume(device_t dv, const pmf_qual_t *qual) 578{ 579 580 acpi_suspended = 0; 581 582 return true; 583} 584 585/* 586 * Namespace scan. 587 */ 588static void 589acpi_build_tree(struct acpi_softc *sc) 590{ 591 struct acpi_walkcontext awc; 592 593 /* 594 * Get the root scope handles. 595 */ 596 KASSERT(__arraycount(acpi_scopes) == 4); 597 598 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 599 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 600 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 601 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 602 603 /* 604 * Make the root node. 605 */ 606 awc.aw_sc = sc; 607 awc.aw_parent = NULL; 608 609 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 610 611 KASSERT(sc->sc_root == NULL); 612 KASSERT(awc.aw_parent != NULL); 613 614 sc->sc_root = awc.aw_parent; 615 616 /* 617 * Build the internal namespace. 618 */ 619 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 620 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 621 622 /* 623 * Scan the internal namespace. 624 */ 625 (void)acpi_pcidev_scan(sc->sc_root); 626 (void)acpi_rescan(sc->sc_dev, NULL, NULL); 627 628 /* 629 * Update GPE information. 630 * 631 * Note that this must be called after 632 * all GPE handlers have been installed. 633 */ 634 (void)AcpiUpdateAllGpes(); 635 636 /* 637 * Defer rest of the configuration. 638 */ 639 (void)config_defer(sc->sc_dev, acpi_rescan_capabilities); 640} 641 642static ACPI_STATUS 643acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 644 void *context, void **status) 645{ 646 struct acpi_walkcontext *awc = context; 647 struct acpi_softc *sc = awc->aw_sc; 648 struct acpi_devnode *ad; 649 ACPI_DEVICE_INFO *devinfo; 650 ACPI_OBJECT_TYPE type; 651 ACPI_STATUS rv; 652 653 rv = AcpiGetObjectInfo(handle, &devinfo); 654 655 if (ACPI_FAILURE(rv)) 656 return AE_OK; /* Do not terminate the walk. */ 657 658 type = devinfo->Type; 659 660 switch (type) { 661 662 case ACPI_TYPE_DEVICE: 663 acpi_activate_device(handle, &devinfo); 664 case ACPI_TYPE_PROCESSOR: 665 case ACPI_TYPE_THERMAL: 666 case ACPI_TYPE_POWER: 667 668 ad = kmem_zalloc(sizeof(*ad), KM_NOSLEEP); 669 670 if (ad == NULL) 671 return AE_NO_MEMORY; 672 673 ad->ad_device = NULL; 674 ad->ad_notify = NULL; 675 ad->ad_pciinfo = NULL; 676 ad->ad_wakedev = NULL; 677 678 ad->ad_type = type; 679 ad->ad_handle = handle; 680 ad->ad_devinfo = devinfo; 681 682 ad->ad_root = sc->sc_dev; 683 ad->ad_parent = awc->aw_parent; 684 685 acpi_set_node(ad); 686 acpi_make_name(ad, devinfo->Name); 687 688 /* 689 * Identify wake GPEs from the _PRW. Note that 690 * AcpiUpdateAllGpes() must be called afterwards. 691 */ 692 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) 693 acpi_wakedev_init(ad); 694 695 SIMPLEQ_INIT(&ad->ad_child_head); 696 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 697 698 if (ad->ad_parent != NULL) { 699 700 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 701 ad, ad_child_list); 702 } 703 704 awc->aw_parent = ad; 705 } 706 707 return AE_OK; 708} 709 710static ACPI_STATUS 711acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 712 void *context, void **status) 713{ 714 struct acpi_walkcontext *awc = context; 715 716 KASSERT(awc != NULL); 717 KASSERT(awc->aw_parent != NULL); 718 719 if (handle == awc->aw_parent->ad_handle) 720 awc->aw_parent = awc->aw_parent->ad_parent; 721 722 return AE_OK; 723} 724 725static void 726acpi_make_name(struct acpi_devnode *ad, uint32_t name) 727{ 728 ACPI_NAME_UNION *anu; 729 int clear, i; 730 731 anu = (ACPI_NAME_UNION *)&name; 732 ad->ad_name[4] = '\0'; 733 734 for (i = 3, clear = 0; i >= 0; i--) { 735 736 if (clear == 0 && anu->Ascii[i] == '_') 737 ad->ad_name[i] = '\0'; 738 else { 739 ad->ad_name[i] = anu->Ascii[i]; 740 clear = 1; 741 } 742 } 743 744 if (ad->ad_name[0] == '\0') 745 ad->ad_name[0] = '_'; 746} 747 748/* 749 * Device attachment. 750 */ 751static int 752acpi_rescan(device_t self, const char *ifattr, const int *locators) 753{ 754 struct acpi_softc *sc = device_private(self); 755 756 /* 757 * A two-pass scan for acpinodebus. 758 */ 759 if (ifattr_match(ifattr, "acpinodebus")) { 760 acpi_rescan_early(sc); 761 acpi_rescan_nodes(sc); 762 } 763 764 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 765 sc->sc_apmbus = config_found_ia(sc->sc_dev, 766 "acpiapmbus", NULL, NULL); 767 768 if (ifattr_match(ifattr, "acpiwdrtbus") && sc->sc_wdrt == NULL) 769 sc->sc_wdrt = config_found_ia(sc->sc_dev, 770 "acpiwdrtbus", NULL, NULL); 771 772 return 0; 773} 774 775static void 776acpi_rescan_early(struct acpi_softc *sc) 777{ 778 struct acpi_attach_args aa; 779 struct acpi_devnode *ad; 780 781 /* 782 * First scan for devices such as acpiec(4) that 783 * should be always attached before anything else. 784 * We want these devices to attach regardless of 785 * the device status and other restrictions. 786 */ 787 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 788 789 if (ad->ad_device != NULL) 790 continue; 791 792 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 793 continue; 794 795 if (acpi_match_hid(ad->ad_devinfo, acpi_early_ids) == 0) 796 continue; 797 798 aa.aa_node = ad; 799 aa.aa_iot = sc->sc_iot; 800 aa.aa_memt = sc->sc_memt; 801 aa.aa_pc = sc->sc_pc; 802 aa.aa_pciflags = sc->sc_pciflags; 803 aa.aa_ic = sc->sc_ic; 804 805 ad->ad_device = config_found_ia(sc->sc_dev, 806 "acpinodebus", &aa, acpi_print); 807 } 808} 809 810static void 811acpi_rescan_nodes(struct acpi_softc *sc) 812{ 813 struct acpi_attach_args aa; 814 struct acpi_devnode *ad; 815 ACPI_DEVICE_INFO *di; 816 817 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 818 819 if (ad->ad_device != NULL) 820 continue; 821 822 /* 823 * There is a bug in ACPICA: it defines the type 824 * of the scopes incorrectly for its own reasons. 825 */ 826 if (acpi_is_scope(ad) != false) 827 continue; 828 829 di = ad->ad_devinfo; 830 831 /* 832 * We only attach devices which are present, enabled, and 833 * functioning properly. However, if a device is enabled, 834 * it is decoding resources and we should claim these, 835 * if possible. This requires changes to bus_space(9). 836 * Note: there is a possible race condition, because _STA 837 * may have changed since di->CurrentStatus was set. 838 */ 839 if (di->Type == ACPI_TYPE_DEVICE) { 840 841 if ((di->Valid & ACPI_VALID_STA) != 0 && 842 (di->CurrentStatus & ACPI_STA_OK) != ACPI_STA_OK) 843 continue; 844 } 845 846 if (di->Type == ACPI_TYPE_POWER) 847 continue; 848 849 if (di->Type == ACPI_TYPE_PROCESSOR) 850 continue; 851 852 if (acpi_match_hid(di, acpi_early_ids) != 0) 853 continue; 854 855 if (acpi_match_hid(di, acpi_ignored_ids) != 0) 856 continue; 857 858 aa.aa_node = ad; 859 aa.aa_iot = sc->sc_iot; 860 aa.aa_memt = sc->sc_memt; 861 aa.aa_pc = sc->sc_pc; 862 aa.aa_pciflags = sc->sc_pciflags; 863 aa.aa_ic = sc->sc_ic; 864 865 ad->ad_device = config_found_ia(sc->sc_dev, 866 "acpinodebus", &aa, acpi_print); 867 } 868} 869 870static void 871acpi_rescan_capabilities(device_t self) 872{ 873 struct acpi_softc *sc = device_private(self); 874 struct acpi_devnode *ad; 875 ACPI_HANDLE tmp; 876 ACPI_STATUS rv; 877 878 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 879 880 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 881 continue; 882 883 /* 884 * Scan power resource capabilities. 885 * 886 * If any power states are supported, 887 * at least _PR0 and _PR3 must be present. 888 */ 889 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 890 891 if (ACPI_SUCCESS(rv)) { 892 ad->ad_flags |= ACPI_DEVICE_POWER; 893 acpi_power_add(ad); 894 } 895 896 /* 897 * Scan wake-up capabilities. 898 */ 899 if (ad->ad_wakedev != NULL) { 900 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 901 acpi_wakedev_add(ad); 902 } 903 904 /* 905 * Scan docking stations. 906 */ 907 rv = AcpiGetHandle(ad->ad_handle, "_DCK", &tmp); 908 909 if (ACPI_SUCCESS(rv)) 910 ad->ad_flags |= ACPI_DEVICE_DOCK; 911 912 /* 913 * Scan devices that are ejectable. 914 */ 915 rv = AcpiGetHandle(ad->ad_handle, "_EJ0", &tmp); 916 917 if (ACPI_SUCCESS(rv)) 918 ad->ad_flags |= ACPI_DEVICE_EJECT; 919 } 920} 921 922static int 923acpi_print(void *aux, const char *pnp) 924{ 925 struct acpi_attach_args *aa = aux; 926 struct acpi_devnode *ad; 927 const char *hid, *uid; 928 ACPI_DEVICE_INFO *di; 929 930 ad = aa->aa_node; 931 di = ad->ad_devinfo; 932 933 hid = di->HardwareId.String; 934 uid = di->UniqueId.String; 935 936 if (pnp != NULL) { 937 938 if (di->Type != ACPI_TYPE_DEVICE) { 939 940 aprint_normal("%s (ACPI Object Type '%s') at %s", 941 ad->ad_name, AcpiUtGetTypeName(ad->ad_type), pnp); 942 943 return UNCONF; 944 } 945 946 if ((di->Valid & ACPI_VALID_HID) == 0 || hid == NULL) 947 return 0; 948 949 aprint_normal("%s (%s) ", ad->ad_name, hid); 950 acpi_print_dev(hid); 951 aprint_normal("at %s", pnp); 952 953 return UNCONF; 954 } 955 956 aprint_normal(" (%s", ad->ad_name); 957 958 if ((di->Valid & ACPI_VALID_HID) != 0 && hid != NULL) { 959 960 aprint_normal(", %s", hid); 961 962 if ((di->Valid & ACPI_VALID_UID) != 0 && uid != NULL) { 963 964 if (uid[0] == '\0') 965 uid = "<null>"; 966 967 aprint_normal("-%s", uid); 968 } 969 } 970 971 aprint_normal(")"); 972 973 return UNCONF; 974} 975 976/* 977 * Notify. 978 */ 979static void 980acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 981{ 982 struct acpi_softc *sc = acpi_softc; 983 struct acpi_devnode *ad; 984 985 KASSERT(sc != NULL); 986 KASSERT(aux == NULL); 987 KASSERT(acpi_active != 0); 988 989 if (acpi_suspended != 0) 990 return; 991 992 /* 993 * System: 0x00 - 0x7F. 994 * Device: 0x80 - 0xFF. 995 */ 996 switch (event) { 997 998 case ACPI_NOTIFY_BUS_CHECK: 999 case ACPI_NOTIFY_DEVICE_CHECK: 1000 case ACPI_NOTIFY_DEVICE_WAKE: 1001 case ACPI_NOTIFY_EJECT_REQUEST: 1002 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1003 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1004 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1005 case ACPI_NOTIFY_POWER_FAULT: 1006 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1007 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1008 case ACPI_NOTIFY_RESERVED: 1009 case ACPI_NOTIFY_LOCALITY_UPDATE: 1010 break; 1011 } 1012 1013 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1014 "%s (%p)\n", event, acpi_name(handle), handle)); 1015 1016 /* 1017 * We deliver notifications only to drivers 1018 * that have been succesfully attached and 1019 * that have registered a handler with us. 1020 * The opaque pointer is always the device_t. 1021 */ 1022 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1023 1024 if (ad->ad_device == NULL) 1025 continue; 1026 1027 if (ad->ad_notify == NULL) 1028 continue; 1029 1030 if (ad->ad_handle != handle) 1031 continue; 1032 1033 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1034 1035 return; 1036 } 1037 1038 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1039 "for %s (%p)\n", event, acpi_name(handle), handle); 1040} 1041 1042bool 1043acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1044{ 1045 struct acpi_softc *sc = acpi_softc; 1046 1047 KASSERT(sc != NULL); 1048 KASSERT(acpi_active != 0); 1049 1050 if (acpi_suspended != 0) 1051 goto fail; 1052 1053 if (ad == NULL || notify == NULL) 1054 goto fail; 1055 1056 ad->ad_notify = notify; 1057 1058 return true; 1059 1060fail: 1061 aprint_error_dev(sc->sc_dev, "failed to register notify " 1062 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1063 1064 return false; 1065} 1066 1067void 1068acpi_deregister_notify(struct acpi_devnode *ad) 1069{ 1070 1071 ad->ad_notify = NULL; 1072} 1073 1074/* 1075 * Fixed buttons. 1076 */ 1077static void 1078acpi_register_fixed_button(struct acpi_softc *sc, int event) 1079{ 1080 struct sysmon_pswitch *smpsw; 1081 ACPI_STATUS rv; 1082 int type; 1083 1084 switch (event) { 1085 1086 case ACPI_EVENT_POWER_BUTTON: 1087 1088 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1089 return; 1090 1091 type = PSWITCH_TYPE_POWER; 1092 smpsw = &sc->sc_smpsw_power; 1093 break; 1094 1095 case ACPI_EVENT_SLEEP_BUTTON: 1096 1097 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1098 return; 1099 1100 type = PSWITCH_TYPE_SLEEP; 1101 smpsw = &sc->sc_smpsw_sleep; 1102 break; 1103 1104 default: 1105 rv = AE_TYPE; 1106 goto fail; 1107 } 1108 1109 smpsw->smpsw_type = type; 1110 smpsw->smpsw_name = device_xname(sc->sc_dev); 1111 1112 if (sysmon_pswitch_register(smpsw) != 0) { 1113 rv = AE_ERROR; 1114 goto fail; 1115 } 1116 1117 rv = AcpiInstallFixedEventHandler(event, 1118 acpi_fixed_button_handler, smpsw); 1119 1120 if (ACPI_FAILURE(rv)) { 1121 sysmon_pswitch_unregister(smpsw); 1122 goto fail; 1123 } 1124 1125 aprint_debug_dev(sc->sc_dev, "fixed %s button present\n", 1126 (type != ACPI_EVENT_SLEEP_BUTTON) ? "power" : "sleep"); 1127 1128 return; 1129 1130fail: 1131 aprint_error_dev(sc->sc_dev, "failed to register " 1132 "fixed event: %s\n", AcpiFormatException(rv)); 1133} 1134 1135static void 1136acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1137{ 1138 struct sysmon_pswitch *smpsw; 1139 ACPI_STATUS rv; 1140 1141 switch (event) { 1142 1143 case ACPI_EVENT_POWER_BUTTON: 1144 smpsw = &sc->sc_smpsw_power; 1145 1146 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1147 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1148 return; 1149 } 1150 1151 break; 1152 1153 case ACPI_EVENT_SLEEP_BUTTON: 1154 smpsw = &sc->sc_smpsw_sleep; 1155 1156 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1157 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1158 return; 1159 } 1160 1161 break; 1162 1163 default: 1164 rv = AE_TYPE; 1165 goto fail; 1166 } 1167 1168 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1169 1170 if (ACPI_SUCCESS(rv)) { 1171 sysmon_pswitch_unregister(smpsw); 1172 return; 1173 } 1174 1175fail: 1176 aprint_error_dev(sc->sc_dev, "failed to deregister " 1177 "fixed event: %s\n", AcpiFormatException(rv)); 1178} 1179 1180static uint32_t 1181acpi_fixed_button_handler(void *context) 1182{ 1183 static const int handler = OSL_NOTIFY_HANDLER; 1184 struct sysmon_pswitch *smpsw = context; 1185 1186 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1187 1188 return ACPI_INTERRUPT_HANDLED; 1189} 1190 1191static void 1192acpi_fixed_button_pressed(void *context) 1193{ 1194 struct sysmon_pswitch *smpsw = context; 1195 1196 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1197 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1198 "power" : "sleep")); 1199 1200 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1201} 1202 1203/* 1204 * Sleep. 1205 */ 1206static void 1207acpi_sleep_init(struct acpi_softc *sc) 1208{ 1209 uint8_t a, b, i; 1210 ACPI_STATUS rv; 1211 1212 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1213 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1214 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1215 1216 /* 1217 * Evaluate supported sleep states. 1218 */ 1219 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1220 1221 rv = AcpiGetSleepTypeData(i, &a, &b); 1222 1223 if (ACPI_SUCCESS(rv)) 1224 sc->sc_sleepstates |= __BIT(i); 1225 } 1226} 1227 1228/* 1229 * Must be called with interrupts enabled. 1230 */ 1231void 1232acpi_enter_sleep_state(int state) 1233{ 1234 struct acpi_softc *sc = acpi_softc; 1235 ACPI_STATUS rv; 1236 int err; 1237 1238 if (acpi_softc == NULL) 1239 return; 1240 1241 if (state == sc->sc_sleepstate) 1242 return; 1243 1244 if (state < ACPI_STATE_S0 || state > ACPI_STATE_S5) 1245 return; 1246 1247 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1248 1249 switch (state) { 1250 1251 case ACPI_STATE_S0: 1252 sc->sc_sleepstate = ACPI_STATE_S0; 1253 return; 1254 1255 case ACPI_STATE_S1: 1256 case ACPI_STATE_S2: 1257 case ACPI_STATE_S3: 1258 case ACPI_STATE_S4: 1259 1260 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1261 aprint_error_dev(sc->sc_dev, "sleep state " 1262 "S%d is not available\n", state); 1263 return; 1264 } 1265 1266 /* 1267 * Evaluate the _TTS method. This should be done before 1268 * pmf_system_suspend(9) and the evaluation of _PTS. 1269 * We should also re-evaluate this once we return to 1270 * S0 or if we abort the sleep state transition in the 1271 * middle (see ACPI 3.0, section 7.3.6). In reality, 1272 * however, the _TTS method is seldom seen in the field. 1273 */ 1274 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1275 1276 if (ACPI_SUCCESS(rv)) 1277 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1278 1279 if (state != ACPI_STATE_S1 && 1280 pmf_system_suspend(PMF_Q_NONE) != true) { 1281 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1282 break; 1283 } 1284 1285 /* 1286 * This will evaluate the _PTS and _SST methods, 1287 * but unlike the documentation claims, not _GTS, 1288 * which is evaluated in AcpiEnterSleepState(). 1289 * This must be called with interrupts enabled. 1290 */ 1291 rv = AcpiEnterSleepStatePrep(state); 1292 1293 if (ACPI_FAILURE(rv)) { 1294 aprint_error_dev(sc->sc_dev, "failed to prepare " 1295 "S%d: %s\n", state, AcpiFormatException(rv)); 1296 break; 1297 } 1298 1299 /* 1300 * After the _PTS method has been evaluated, we can 1301 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1302 */ 1303 acpi_wakedev_commit(sc, state); 1304 1305 sc->sc_sleepstate = state; 1306 1307 if (state == ACPI_STATE_S1) { 1308 1309 /* 1310 * Before the transition to S1, CPU caches 1311 * must be flushed (see ACPI 4.0, 7.3.4.2). 1312 * 1313 * Note that interrupts must be off before 1314 * calling AcpiEnterSleepState(). Conversely, 1315 * AcpiLeaveSleepState() should always be 1316 * called with interrupts enabled. 1317 */ 1318 acpi_md_OsDisableInterrupt(); 1319 1320 ACPI_FLUSH_CPU_CACHE(); 1321 rv = AcpiEnterSleepState(state); 1322 1323 if (ACPI_FAILURE(rv)) 1324 aprint_error_dev(sc->sc_dev, "failed to " 1325 "enter S1: %s\n", AcpiFormatException(rv)); 1326 1327 acpi_md_OsEnableInterrupt(); 1328 rv = AcpiLeaveSleepState(state); 1329 1330 } else { 1331 1332 err = acpi_md_sleep(state); 1333 1334 if (state == ACPI_STATE_S4) 1335 AcpiEnable(); 1336 1337 (void)pmf_system_bus_resume(PMF_Q_NONE); 1338 (void)AcpiLeaveSleepState(state); 1339 (void)AcpiSetFirmwareWakingVector(0); 1340 (void)pmf_system_resume(PMF_Q_NONE); 1341 } 1342 1343 /* 1344 * No wake GPEs should be enabled at runtime. 1345 */ 1346 acpi_wakedev_commit(sc, ACPI_STATE_S0); 1347 break; 1348 1349 case ACPI_STATE_S5: 1350 1351 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1352 1353 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1354 1355 if (ACPI_FAILURE(rv)) { 1356 aprint_error_dev(sc->sc_dev, "failed to prepare " 1357 "S%d: %s\n", state, AcpiFormatException(rv)); 1358 break; 1359 } 1360 1361 (void)AcpiDisableAllGpes(); 1362 1363 DELAY(1000000); 1364 1365 sc->sc_sleepstate = state; 1366 acpi_md_OsDisableInterrupt(); 1367 1368 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1369 1370 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1371 1372 break; 1373 } 1374 1375 sc->sc_sleepstate = ACPI_STATE_S0; 1376 1377 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1378} 1379 1380/* 1381 * Sysctl. 1382 */ 1383SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1384{ 1385 const struct sysctlnode *mnode, *rnode, *snode; 1386 int err; 1387 1388 err = sysctl_createv(clog, 0, NULL, &rnode, 1389 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", 1390 NULL, NULL, 0, NULL, 0, 1391 CTL_HW, CTL_EOL); 1392 1393 if (err != 0) 1394 return; 1395 1396 err = sysctl_createv(clog, 0, &rnode, &rnode, 1397 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1398 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1399 NULL, 0, NULL, 0, 1400 CTL_CREATE, CTL_EOL); 1401 1402 if (err != 0) 1403 return; 1404 1405 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1406 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1407 "root", SYSCTL_DESCR("ACPI root pointer"), 1408 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1409 CTL_CREATE, CTL_EOL); 1410 1411 err = sysctl_createv(clog, 0, &rnode, &snode, 1412 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1413 "sleep", SYSCTL_DESCR("ACPI sleep"), 1414 NULL, 0, NULL, 0, 1415 CTL_CREATE, CTL_EOL); 1416 1417 if (err != 0) 1418 return; 1419 1420 (void)sysctl_createv(NULL, 0, &snode, NULL, 1421 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1422 "state", SYSCTL_DESCR("System sleep state"), 1423 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1424 CTL_CREATE, CTL_EOL); 1425 1426 (void)sysctl_createv(NULL, 0, &snode, NULL, 1427 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1428 "states", SYSCTL_DESCR("Supported sleep states"), 1429 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1430 CTL_CREATE, CTL_EOL); 1431 1432 /* 1433 * For the time being, machdep.sleep_state 1434 * is provided for backwards compatibility. 1435 */ 1436 err = sysctl_createv(NULL, 0, NULL, &mnode, 1437 CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep", 1438 NULL, NULL, 0, NULL, 0, 1439 CTL_MACHDEP, CTL_EOL); 1440 1441 if (err == 0) { 1442 1443 (void)sysctl_createv(NULL, 0, &mnode, NULL, 1444 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1445 "sleep_state", SYSCTL_DESCR("System sleep state"), 1446 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1447 CTL_CREATE, CTL_EOL); 1448 } 1449 1450 err = sysctl_createv(clog, 0, &rnode, &rnode, 1451 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1452 "stat", SYSCTL_DESCR("ACPI statistics"), 1453 NULL, 0, NULL, 0, 1454 CTL_CREATE, CTL_EOL); 1455 1456 if (err != 0) 1457 return; 1458 1459 (void)sysctl_createv(clog, 0, &rnode, NULL, 1460 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1461 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1462 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1463 CTL_CREATE, CTL_EOL); 1464 1465 (void)sysctl_createv(clog, 0, &rnode, NULL, 1466 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1467 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1468 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1469 CTL_CREATE, CTL_EOL); 1470 1471 (void)sysctl_createv(clog, 0, &rnode, NULL, 1472 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1473 "fixed", SYSCTL_DESCR("Number of fixed events"), 1474 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1475 CTL_CREATE, CTL_EOL); 1476 1477 (void)sysctl_createv(clog, 0, &rnode, NULL, 1478 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1479 "method", SYSCTL_DESCR("Number of methods executed"), 1480 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1481 CTL_CREATE, CTL_EOL); 1482 1483 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1484 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1485} 1486 1487static int 1488sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1489{ 1490 struct sysctlnode node; 1491 uint64_t t; 1492 int err, i; 1493 1494 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1495 t += AcpiFixedEventCount[i]; 1496 1497 node = *rnode; 1498 node.sysctl_data = &t; 1499 1500 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1501 1502 if (err || newp == NULL) 1503 return err; 1504 1505 return 0; 1506} 1507 1508static int 1509sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1510{ 1511 struct acpi_softc *sc = acpi_softc; 1512 struct sysctlnode node; 1513 int err, t; 1514 1515 if (acpi_softc == NULL) 1516 return ENOSYS; 1517 1518 node = *rnode; 1519 t = sc->sc_sleepstate; 1520 node.sysctl_data = &t; 1521 1522 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1523 1524 if (err || newp == NULL) 1525 return err; 1526 1527 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1528 return EINVAL; 1529 1530 acpi_enter_sleep_state(t); 1531 1532 return 0; 1533} 1534 1535static int 1536sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1537{ 1538 struct acpi_softc *sc = acpi_softc; 1539 struct sysctlnode node; 1540 char t[3 * 6 + 1]; 1541 int err; 1542 1543 if (acpi_softc == NULL) 1544 return ENOSYS; 1545 1546 (void)memset(t, '\0', sizeof(t)); 1547 1548 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1549 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1550 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1551 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1552 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1553 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1554 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1555 1556 node = *rnode; 1557 node.sysctl_data = &t; 1558 1559 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1560 1561 if (err || newp == NULL) 1562 return err; 1563 1564 return 0; 1565} 1566 1567/* 1568 * Tables. 1569 */ 1570ACPI_PHYSICAL_ADDRESS 1571acpi_OsGetRootPointer(void) 1572{ 1573 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1574 1575 /* 1576 * We let MD code handle this since there are multiple ways to do it: 1577 * 1578 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1579 * 1580 * IA-64: Use the EFI. 1581 */ 1582 PhysicalAddress = acpi_md_OsGetRootPointer(); 1583 1584 if (acpi_root_pointer == 0) 1585 acpi_root_pointer = PhysicalAddress; 1586 1587 return PhysicalAddress; 1588} 1589 1590static ACPI_TABLE_HEADER * 1591acpi_map_rsdt(void) 1592{ 1593 ACPI_PHYSICAL_ADDRESS paddr; 1594 ACPI_TABLE_RSDP *rsdp; 1595 1596 paddr = AcpiOsGetRootPointer(); 1597 1598 if (paddr == 0) 1599 return NULL; 1600 1601 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1602 1603 if (rsdp == NULL) 1604 return NULL; 1605 1606 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1607 paddr = rsdp->XsdtPhysicalAddress; 1608 else 1609 paddr = rsdp->RsdtPhysicalAddress; 1610 1611 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1612 1613 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1614} 1615 1616/* 1617 * XXX: Refactor to be a generic function that unmaps tables. 1618 */ 1619static void 1620acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1621{ 1622 1623 if (rsdt == NULL) 1624 return; 1625 1626 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1627} 1628 1629/* 1630 * XXX: Refactor to be a generic function that maps tables. 1631 */ 1632ACPI_STATUS 1633acpi_madt_map(void) 1634{ 1635 ACPI_STATUS rv; 1636 1637 if (madt_header != NULL) 1638 return AE_ALREADY_EXISTS; 1639 1640 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); 1641 1642 if (ACPI_FAILURE(rv)) 1643 return rv; 1644 1645 return AE_OK; 1646} 1647 1648void 1649acpi_madt_unmap(void) 1650{ 1651 madt_header = NULL; 1652} 1653 1654/* 1655 * XXX: Refactor to be a generic function that walks tables. 1656 */ 1657void 1658acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) 1659{ 1660 ACPI_SUBTABLE_HEADER *hdrp; 1661 char *madtend, *where; 1662 1663 madtend = (char *)madt_header + madt_header->Length; 1664 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); 1665 1666 while (where < madtend) { 1667 1668 hdrp = (ACPI_SUBTABLE_HEADER *)where; 1669 1670 if (ACPI_FAILURE(func(hdrp, aux))) 1671 break; 1672 1673 where += hdrp->Length; 1674 } 1675} 1676 1677/* 1678 * Miscellaneous. 1679 */ 1680static bool 1681acpi_is_scope(struct acpi_devnode *ad) 1682{ 1683 int i; 1684 1685 /* 1686 * Return true if the node is a root scope. 1687 */ 1688 if (ad->ad_parent == NULL) 1689 return false; 1690 1691 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1692 return false; 1693 1694 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1695 1696 if (acpi_scopes[i] == NULL) 1697 continue; 1698 1699 if (ad->ad_handle == acpi_scopes[i]) 1700 return true; 1701 } 1702 1703 return false; 1704} 1705 1706/* 1707 * ACPIVERBOSE. 1708 */ 1709void 1710acpi_load_verbose(void) 1711{ 1712 1713 if (acpi_verbose_loaded == 0) 1714 module_autoload("acpiverbose", MODULE_CLASS_MISC); 1715} 1716 1717void 1718acpi_print_verbose_stub(struct acpi_softc *sc) 1719{ 1720 1721 acpi_load_verbose(); 1722 1723 if (acpi_verbose_loaded != 0) 1724 acpi_print_verbose(sc); 1725} 1726 1727void 1728acpi_print_dev_stub(const char *pnpstr) 1729{ 1730 1731 acpi_load_verbose(); 1732 1733 if (acpi_verbose_loaded != 0) 1734 acpi_print_dev(pnpstr); 1735} 1736 1737MALLOC_DECLARE(M_ACPI); /* XXX: ACPI_ACTIVATE_DEV should use kmem(9). */ 1738 1739/* 1740 * ACPI_ACTIVATE_DEV. 1741 */ 1742static void 1743acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 1744{ 1745 1746#ifndef ACPI_ACTIVATE_DEV 1747 return; 1748} 1749#else 1750 static const int valid = ACPI_VALID_STA | ACPI_VALID_HID; 1751 ACPI_DEVICE_INFO *newdi; 1752 ACPI_STATUS rv; 1753 uint32_t old; 1754 1755 /* 1756 * If the device is valid and present, 1757 * but not enabled, try to activate it. 1758 */ 1759 if (((*di)->Valid & valid) != valid) 1760 return; 1761 1762 old = (*di)->CurrentStatus; 1763 1764 if ((old & (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED)) != 1765 ACPI_STA_DEVICE_PRESENT) 1766 return; 1767 1768 rv = acpi_allocate_resources(handle); 1769 1770 if (ACPI_FAILURE(rv)) 1771 goto fail; 1772 1773 rv = AcpiGetObjectInfo(handle, &newdi); 1774 1775 if (ACPI_FAILURE(rv)) 1776 goto fail; 1777 1778 ACPI_FREE(*di); 1779 *di = newdi; 1780 1781 aprint_verbose_dev(acpi_softc->sc_dev, 1782 "%s activated, STA 0x%08X -> STA 0x%08X\n", 1783 (*di)->HardwareId.String, old, (*di)->CurrentStatus); 1784 1785 return; 1786 1787fail: 1788 aprint_error_dev(acpi_softc->sc_dev, "failed to " 1789 "activate %s\n", (*di)->HardwareId.String); 1790} 1791 1792/* 1793 * XXX: This very incomplete. 1794 */ 1795ACPI_STATUS 1796acpi_allocate_resources(ACPI_HANDLE handle) 1797{ 1798 ACPI_BUFFER bufp, bufc, bufn; 1799 ACPI_RESOURCE *resp, *resc, *resn; 1800 ACPI_RESOURCE_IRQ *irq; 1801 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 1802 ACPI_STATUS rv; 1803 uint delta; 1804 1805 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 1806 if (ACPI_FAILURE(rv)) 1807 goto out; 1808 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 1809 if (ACPI_FAILURE(rv)) { 1810 goto out1; 1811 } 1812 1813 bufn.Length = 1000; 1814 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 1815 resp = bufp.Pointer; 1816 resc = bufc.Pointer; 1817 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 1818 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1819 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 1820 resp = ACPI_NEXT_RESOURCE(resp); 1821 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 1822 break; 1823 /* Found identical Id */ 1824 resn->Type = resc->Type; 1825 switch (resc->Type) { 1826 case ACPI_RESOURCE_TYPE_IRQ: 1827 memcpy(&resn->Data, &resp->Data, 1828 sizeof(ACPI_RESOURCE_IRQ)); 1829 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 1830 irq->Interrupts[0] = 1831 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 1832 Interrupts[irq->InterruptCount-1]; 1833 irq->InterruptCount = 1; 1834 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 1835 break; 1836 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 1837 memcpy(&resn->Data, &resp->Data, 1838 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 1839 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 1840#if 0 1841 /* 1842 * XXX: Not duplicating the interrupt logic above 1843 * because its not clear what it accomplishes. 1844 */ 1845 xirq->Interrupts[0] = 1846 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 1847 Interrupts[irq->NumberOfInterrupts-1]; 1848 xirq->NumberOfInterrupts = 1; 1849#endif 1850 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 1851 break; 1852 case ACPI_RESOURCE_TYPE_IO: 1853 memcpy(&resn->Data, &resp->Data, 1854 sizeof(ACPI_RESOURCE_IO)); 1855 resn->Length = resp->Length; 1856 break; 1857 default: 1858 aprint_error_dev(acpi_softc->sc_dev, 1859 "%s: invalid type %u\n", __func__, resc->Type); 1860 rv = AE_BAD_DATA; 1861 goto out2; 1862 } 1863 resc = ACPI_NEXT_RESOURCE(resc); 1864 resn = ACPI_NEXT_RESOURCE(resn); 1865 resp = ACPI_NEXT_RESOURCE(resp); 1866 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 1867 if (delta >= 1868 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 1869 bufn.Length *= 2; 1870 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 1871 M_ACPI, M_WAITOK); 1872 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 1873 delta); 1874 } 1875 } 1876 1877 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1878 aprint_error_dev(acpi_softc->sc_dev, 1879 "%s: resc not exhausted\n", __func__); 1880 rv = AE_BAD_DATA; 1881 goto out3; 1882 } 1883 1884 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 1885 rv = AcpiSetCurrentResources(handle, &bufn); 1886 1887 if (ACPI_FAILURE(rv)) 1888 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 1889 "resources: %s\n", __func__, AcpiFormatException(rv)); 1890 1891out3: 1892 free(bufn.Pointer, M_ACPI); 1893out2: 1894 ACPI_FREE(bufc.Pointer); 1895out1: 1896 ACPI_FREE(bufp.Pointer); 1897out: 1898 return rv; 1899} 1900 1901#endif /* ACPI_ACTIVATE_DEV */ 1902