1 /* $NetBSD: acpi.c,v 1.255 2012/09/23 00:31:06 chs 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 1.255 2012/09/23 00:31:06 chs 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 130 ACPI_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 */ 137 int acpi_active = 0; 138 int acpi_suspended = 0; 139 int acpi_force_load = 0; 140 int acpi_verbose_loaded = 0; 141 142 struct acpi_softc *acpi_softc = NULL; 143 static uint64_t acpi_root_pointer; 144 extern kmutex_t acpi_interrupt_list_mtx; 145 extern struct cfdriver acpi_cd; 146 static ACPI_HANDLE acpi_scopes[4]; 147 ACPI_TABLE_HEADER *madt_header; 148 149 /* 150 * This structure provides a context for the ACPI 151 * namespace walk performed in acpi_build_tree(). 152 */ 153 struct acpi_walkcontext { 154 struct acpi_softc *aw_sc; 155 struct acpi_devnode *aw_parent; 156 }; 157 158 /* 159 * Ignored HIDs. 160 */ 161 static 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 */ 179 static const char * const acpi_early_ids[] = { 180 "PNP0C09", /* acpiec(4) */ 181 NULL 182 }; 183 184 static int acpi_match(device_t, cfdata_t, void *); 185 static int acpi_submatch(device_t, cfdata_t, const int *, void *); 186 static void acpi_attach(device_t, device_t, void *); 187 static int acpi_detach(device_t, int); 188 static void acpi_childdet(device_t, device_t); 189 static bool acpi_suspend(device_t, const pmf_qual_t *); 190 static bool acpi_resume(device_t, const pmf_qual_t *); 191 192 static void acpi_build_tree(struct acpi_softc *); 193 static void acpi_config_tree(struct acpi_softc *); 194 static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, 195 void *, void **); 196 static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t, 197 void *, void **); 198 static void acpi_make_name(struct acpi_devnode *, uint32_t); 199 200 static int acpi_rescan(device_t, const char *, const int *); 201 static void acpi_rescan_early(struct acpi_softc *); 202 static void acpi_rescan_nodes(struct acpi_softc *); 203 static void acpi_rescan_capabilities(device_t); 204 static int acpi_print(void *aux, const char *); 205 206 static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); 207 208 static void acpi_register_fixed_button(struct acpi_softc *, int); 209 static void acpi_deregister_fixed_button(struct acpi_softc *, int); 210 static uint32_t acpi_fixed_button_handler(void *); 211 static void acpi_fixed_button_pressed(void *); 212 213 static void acpi_sleep_init(struct acpi_softc *); 214 215 static int sysctl_hw_acpi_fixedstats(SYSCTLFN_PROTO); 216 static int sysctl_hw_acpi_sleepstate(SYSCTLFN_PROTO); 217 static int sysctl_hw_acpi_sleepstates(SYSCTLFN_PROTO); 218 219 static bool acpi_is_scope(struct acpi_devnode *); 220 static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 221 static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 222 223 void acpi_print_verbose_stub(struct acpi_softc *); 224 void acpi_print_dev_stub(const char *); 225 226 static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **); 227 ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE); 228 229 void (*acpi_print_verbose)(struct acpi_softc *) = acpi_print_verbose_stub; 230 void (*acpi_print_dev)(const char *) = acpi_print_dev_stub; 231 232 CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 233 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 234 235 /* 236 * Probe for ACPI support. 237 * 238 * This is called by the machine-dependent ACPI front-end. 239 * Note: this is not an autoconfiguration interface function. 240 */ 241 int 242 acpi_probe(void) 243 { 244 ACPI_TABLE_HEADER *rsdt; 245 ACPI_STATUS rv; 246 int quirks; 247 248 if (acpi_softc != NULL) 249 panic("%s: already probed", __func__); 250 251 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 252 253 /* 254 * Start up ACPICA. 255 */ 256 AcpiGbl_AllMethodsSerialized = false; 257 AcpiGbl_EnableInterpreterSlack = true; 258 259 rv = AcpiInitializeSubsystem(); 260 261 if (ACPI_FAILURE(rv)) { 262 aprint_error("%s: failed to initialize subsystem\n", __func__); 263 return 0; 264 } 265 266 /* 267 * Allocate space for RSDT/XSDT and DSDT, 268 * but allow resizing if more tables exist. 269 */ 270 rv = AcpiInitializeTables(NULL, 2, true); 271 272 if (ACPI_FAILURE(rv)) { 273 aprint_error("%s: failed to initialize tables\n", __func__); 274 goto fail; 275 } 276 277 rv = AcpiLoadTables(); 278 279 if (ACPI_FAILURE(rv)) { 280 aprint_error("%s: failed to load tables\n", __func__); 281 goto fail; 282 } 283 284 rsdt = acpi_map_rsdt(); 285 286 if (rsdt == NULL) { 287 aprint_error("%s: failed to map RSDT\n", __func__); 288 goto fail; 289 } 290 291 quirks = acpi_find_quirks(); 292 293 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_BROKEN) != 0) { 294 295 aprint_normal("ACPI: BIOS is listed as broken:\n"); 296 aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 297 "AslId <%4.4s,%08x>\n", rsdt->OemId, rsdt->OemTableId, 298 rsdt->OemRevision, rsdt->AslCompilerId, 299 rsdt->AslCompilerRevision); 300 aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n"); 301 302 acpi_unmap_rsdt(rsdt); 303 goto fail; 304 } 305 306 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_OLDBIOS) != 0) { 307 308 aprint_normal("ACPI: BIOS is too old (%s). " 309 "Set acpi_force_load to use.\n", 310 pmf_get_platform("bios-date")); 311 312 acpi_unmap_rsdt(rsdt); 313 goto fail; 314 } 315 316 acpi_unmap_rsdt(rsdt); 317 318 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 319 320 if (ACPI_FAILURE(rv)) { 321 aprint_error("%s: failed to enable subsystem\n", __func__); 322 goto fail; 323 } 324 325 return 1; 326 327 fail: 328 (void)AcpiTerminate(); 329 330 return 0; 331 } 332 333 void 334 acpi_disable(void) 335 { 336 337 if (acpi_softc == NULL) 338 return; 339 340 KASSERT(acpi_active != 0); 341 342 if (AcpiGbl_FADT.SmiCommand != 0) 343 AcpiDisable(); 344 } 345 346 int 347 acpi_check(device_t parent, const char *ifattr) 348 { 349 return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); 350 } 351 352 int 353 acpi_reset(void) 354 { 355 struct acpi_softc *sc = acpi_softc; 356 ACPI_GENERIC_ADDRESS *ResetReg; 357 ACPI_PCI_ID PciId; 358 ACPI_STATUS status; 359 360 if (sc == NULL) 361 return ENXIO; 362 363 ResetReg = &AcpiGbl_FADT.ResetRegister; 364 365 /* Check if the reset register is supported */ 366 if (!(AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) || 367 !ResetReg->Address) { 368 return ENOENT; 369 } 370 371 switch (ResetReg->SpaceId) { 372 case ACPI_ADR_SPACE_PCI_CONFIG: 373 PciId.Segment = PciId.Bus = 0; 374 PciId.Device = ACPI_GAS_PCI_DEV(ResetReg->Address); 375 PciId.Function = ACPI_GAS_PCI_FUNC(ResetReg->Address); 376 status = AcpiOsWritePciConfiguration(&PciId, 377 ACPI_GAS_PCI_REGOFF(ResetReg->Address), 378 AcpiGbl_FADT.ResetValue, ResetReg->BitWidth); 379 break; 380 case ACPI_ADR_SPACE_SYSTEM_IO: 381 case ACPI_ADR_SPACE_SYSTEM_MEMORY: 382 status = AcpiReset(); 383 break; 384 default: 385 status = AE_TYPE; 386 break; 387 } 388 389 return ACPI_FAILURE(status) ? EIO : 0; 390 } 391 392 /* 393 * Autoconfiguration. 394 */ 395 static int 396 acpi_match(device_t parent, cfdata_t match, void *aux) 397 { 398 /* 399 * XXX: Nada; MD code has called acpi_probe(). 400 */ 401 return 1; 402 } 403 404 static int 405 acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 406 { 407 struct cfattach *ca; 408 409 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 410 411 return (ca == &acpi_ca); 412 } 413 414 static void 415 acpi_attach(device_t parent, device_t self, void *aux) 416 { 417 struct acpi_softc *sc = device_private(self); 418 struct acpibus_attach_args *aa = aux; 419 ACPI_TABLE_HEADER *rsdt; 420 ACPI_STATUS rv; 421 422 aprint_naive("\n"); 423 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 424 425 if (acpi_softc != NULL) 426 panic("%s: already attached", __func__); 427 428 rsdt = acpi_map_rsdt(); 429 430 if (rsdt == NULL) 431 aprint_error_dev(self, "X/RSDT: Not found\n"); 432 else { 433 aprint_verbose_dev(self, 434 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 435 rsdt->OemId, rsdt->OemTableId, 436 rsdt->OemRevision, 437 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 438 } 439 440 acpi_unmap_rsdt(rsdt); 441 442 sc->sc_dev = self; 443 sc->sc_root = NULL; 444 445 sc->sc_sleepstate = ACPI_STATE_S0; 446 sc->sc_quirks = acpi_find_quirks(); 447 448 sysmon_power_settype("acpi"); 449 450 sc->sc_iot = aa->aa_iot; 451 sc->sc_memt = aa->aa_memt; 452 sc->sc_pc = aa->aa_pc; 453 sc->sc_pciflags = aa->aa_pciflags; 454 sc->sc_ic = aa->aa_ic; 455 456 SIMPLEQ_INIT(&sc->ad_head); 457 458 acpi_softc = sc; 459 460 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) 461 aprint_error_dev(self, "couldn't establish power handler\n"); 462 463 /* 464 * Bring ACPICA on-line. 465 */ 466 467 rv = AcpiEnableSubsystem(ACPI_FULL_INITIALIZATION); 468 469 if (ACPI_FAILURE(rv)) 470 goto fail; 471 472 /* 473 * Early initialization of acpiec(4) via ECDT. 474 */ 475 (void)config_found_ia(self, "acpiecdtbus", aa, NULL); 476 477 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 478 479 if (ACPI_FAILURE(rv)) 480 goto fail; 481 482 /* 483 * Scan the namespace and build our device tree. 484 */ 485 acpi_build_tree(sc); 486 487 acpi_md_callback(sc); 488 489 /* 490 * Early initialization of the _PDC control method 491 * that may load additional SSDT tables dynamically. 492 */ 493 (void)acpi_md_pdc(); 494 495 /* 496 * Install global notify handlers. 497 */ 498 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 499 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 500 501 if (ACPI_FAILURE(rv)) 502 goto fail; 503 504 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 505 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 506 507 if (ACPI_FAILURE(rv)) 508 goto fail; 509 510 acpi_active = 1; 511 512 /* Show SCI interrupt. */ 513 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 514 AcpiGbl_FADT.SciInterrupt); 515 516 /* 517 * Install fixed-event handlers. 518 */ 519 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 520 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 521 522 acpitimer_init(sc); 523 acpi_config_tree(sc); 524 acpi_sleep_init(sc); 525 526 #ifdef ACPI_DEBUG 527 acpi_debug_init(); 528 #endif 529 530 /* 531 * Print debug information. 532 */ 533 acpi_print_verbose(sc); 534 535 return; 536 537 fail: 538 aprint_error("%s: failed to initialize ACPI: %s\n", 539 __func__, AcpiFormatException(rv)); 540 } 541 542 /* 543 * XXX: This is incomplete. 544 */ 545 static int 546 acpi_detach(device_t self, int flags) 547 { 548 struct acpi_softc *sc = device_private(self); 549 ACPI_STATUS rv; 550 int rc; 551 552 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 553 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 554 555 if (ACPI_FAILURE(rv)) 556 return EBUSY; 557 558 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 559 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 560 561 if (ACPI_FAILURE(rv)) 562 return EBUSY; 563 564 if ((rc = config_detach_children(self, flags)) != 0) 565 return rc; 566 567 if ((rc = acpitimer_detach()) != 0) 568 return rc; 569 570 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 571 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 572 573 pmf_device_deregister(self); 574 575 acpi_softc = NULL; 576 577 return 0; 578 } 579 580 static void 581 acpi_childdet(device_t self, device_t child) 582 { 583 struct acpi_softc *sc = device_private(self); 584 struct acpi_devnode *ad; 585 586 if (sc->sc_apmbus == child) 587 sc->sc_apmbus = NULL; 588 589 if (sc->sc_hpet == child) 590 sc->sc_hpet = NULL; 591 592 if (sc->sc_wdrt == child) 593 sc->sc_wdrt = NULL; 594 595 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 596 597 if (ad->ad_device == child) 598 ad->ad_device = NULL; 599 } 600 } 601 602 static bool 603 acpi_suspend(device_t dv, const pmf_qual_t *qual) 604 { 605 606 acpi_suspended = 1; 607 608 return true; 609 } 610 611 static bool 612 acpi_resume(device_t dv, const pmf_qual_t *qual) 613 { 614 615 acpi_suspended = 0; 616 617 return true; 618 } 619 620 /* 621 * Namespace scan. 622 */ 623 static void 624 acpi_build_tree(struct acpi_softc *sc) 625 { 626 struct acpi_walkcontext awc; 627 628 /* 629 * Get the root scope handles. 630 */ 631 KASSERT(__arraycount(acpi_scopes) == 4); 632 633 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 634 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 635 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 636 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 637 638 /* 639 * Make the root node. 640 */ 641 awc.aw_sc = sc; 642 awc.aw_parent = NULL; 643 644 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 645 646 KASSERT(sc->sc_root == NULL); 647 KASSERT(awc.aw_parent != NULL); 648 649 sc->sc_root = awc.aw_parent; 650 651 /* 652 * Build the internal namespace. 653 */ 654 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 655 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 656 657 /* 658 * Scan the internal namespace. 659 */ 660 (void)acpi_pcidev_scan(sc->sc_root); 661 } 662 663 static void 664 acpi_config_tree(struct acpi_softc *sc) 665 { 666 667 /* 668 * Configure all everything found "at acpi?". 669 */ 670 (void)acpi_rescan(sc->sc_dev, NULL, NULL); 671 672 /* 673 * Update GPE information. 674 * 675 * Note that this must be called after 676 * all GPE handlers have been installed. 677 */ 678 (void)AcpiUpdateAllGpes(); 679 680 /* 681 * Defer rest of the configuration. 682 */ 683 (void)config_defer(sc->sc_dev, acpi_rescan_capabilities); 684 } 685 686 static ACPI_STATUS 687 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 688 void *context, void **status) 689 { 690 struct acpi_walkcontext *awc = context; 691 struct acpi_softc *sc = awc->aw_sc; 692 struct acpi_devnode *ad; 693 ACPI_DEVICE_INFO *devinfo; 694 ACPI_OBJECT_TYPE type; 695 ACPI_STATUS rv; 696 697 rv = AcpiGetObjectInfo(handle, &devinfo); 698 699 if (ACPI_FAILURE(rv)) 700 return AE_OK; /* Do not terminate the walk. */ 701 702 type = devinfo->Type; 703 704 switch (type) { 705 706 case ACPI_TYPE_DEVICE: 707 acpi_activate_device(handle, &devinfo); 708 case ACPI_TYPE_PROCESSOR: 709 case ACPI_TYPE_THERMAL: 710 case ACPI_TYPE_POWER: 711 712 ad = kmem_zalloc(sizeof(*ad), KM_SLEEP); 713 714 if (ad == NULL) 715 return AE_NO_MEMORY; 716 717 ad->ad_device = NULL; 718 ad->ad_notify = NULL; 719 ad->ad_pciinfo = NULL; 720 ad->ad_wakedev = NULL; 721 722 ad->ad_type = type; 723 ad->ad_handle = handle; 724 ad->ad_devinfo = devinfo; 725 726 ad->ad_root = sc->sc_dev; 727 ad->ad_parent = awc->aw_parent; 728 729 acpi_match_node_init(ad); 730 acpi_make_name(ad, devinfo->Name); 731 732 /* 733 * Identify wake GPEs from the _PRW. Note that 734 * AcpiUpdateAllGpes() must be called afterwards. 735 */ 736 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) 737 acpi_wakedev_init(ad); 738 739 SIMPLEQ_INIT(&ad->ad_child_head); 740 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 741 742 if (ad->ad_parent != NULL) { 743 744 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 745 ad, ad_child_list); 746 } 747 748 awc->aw_parent = ad; 749 } 750 751 return AE_OK; 752 } 753 754 static ACPI_STATUS 755 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 756 void *context, void **status) 757 { 758 struct acpi_walkcontext *awc = context; 759 760 KASSERT(awc != NULL); 761 KASSERT(awc->aw_parent != NULL); 762 763 if (handle == awc->aw_parent->ad_handle) 764 awc->aw_parent = awc->aw_parent->ad_parent; 765 766 return AE_OK; 767 } 768 769 static void 770 acpi_make_name(struct acpi_devnode *ad, uint32_t name) 771 { 772 ACPI_NAME_UNION *anu; 773 int clear, i; 774 775 anu = (ACPI_NAME_UNION *)&name; 776 ad->ad_name[4] = '\0'; 777 778 for (i = 3, clear = 0; i >= 0; i--) { 779 780 if (clear == 0 && anu->Ascii[i] == '_') 781 ad->ad_name[i] = '\0'; 782 else { 783 ad->ad_name[i] = anu->Ascii[i]; 784 clear = 1; 785 } 786 } 787 788 if (ad->ad_name[0] == '\0') 789 ad->ad_name[0] = '_'; 790 } 791 792 /* 793 * Device attachment. 794 */ 795 static int 796 acpi_rescan(device_t self, const char *ifattr, const int *locators) 797 { 798 struct acpi_softc *sc = device_private(self); 799 struct acpi_attach_args aa; 800 801 /* 802 * Try to attach hpet(4) first via a specific table. 803 */ 804 aa.aa_memt = sc->sc_memt; 805 806 if (ifattr_match(ifattr, "acpihpetbus") && sc->sc_hpet == NULL) 807 sc->sc_hpet = config_found_ia(sc->sc_dev, 808 "acpihpetbus", &aa, NULL); 809 810 /* 811 * A two-pass scan for acpinodebus. 812 */ 813 if (ifattr_match(ifattr, "acpinodebus")) { 814 acpi_rescan_early(sc); 815 acpi_rescan_nodes(sc); 816 } 817 818 /* 819 * Attach APM emulation and acpiwdrt(4). 820 */ 821 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 822 sc->sc_apmbus = config_found_ia(sc->sc_dev, 823 "acpiapmbus", NULL, NULL); 824 825 if (ifattr_match(ifattr, "acpiwdrtbus") && sc->sc_wdrt == NULL) 826 sc->sc_wdrt = config_found_ia(sc->sc_dev, 827 "acpiwdrtbus", NULL, NULL); 828 829 return 0; 830 } 831 832 static void 833 acpi_rescan_early(struct acpi_softc *sc) 834 { 835 struct acpi_attach_args aa; 836 struct acpi_devnode *ad; 837 838 /* 839 * First scan for devices such as acpiec(4) that 840 * should be always attached before anything else. 841 * We want these devices to attach regardless of 842 * the device status and other restrictions. 843 */ 844 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 845 846 if (ad->ad_device != NULL) 847 continue; 848 849 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 850 continue; 851 852 if (acpi_match_hid(ad->ad_devinfo, acpi_early_ids) == 0) 853 continue; 854 855 aa.aa_node = ad; 856 aa.aa_iot = sc->sc_iot; 857 aa.aa_memt = sc->sc_memt; 858 aa.aa_pc = sc->sc_pc; 859 aa.aa_pciflags = sc->sc_pciflags; 860 aa.aa_ic = sc->sc_ic; 861 862 ad->ad_device = config_found_ia(sc->sc_dev, 863 "acpinodebus", &aa, acpi_print); 864 } 865 } 866 867 static void 868 acpi_rescan_nodes(struct acpi_softc *sc) 869 { 870 const char * const hpet_ids[] = { "PNP0103", NULL }; 871 struct acpi_attach_args aa; 872 struct acpi_devnode *ad; 873 ACPI_DEVICE_INFO *di; 874 875 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 876 877 if (ad->ad_device != NULL) 878 continue; 879 880 /* 881 * There is a bug in ACPICA: it defines the type 882 * of the scopes incorrectly for its own reasons. 883 */ 884 if (acpi_is_scope(ad) != false) 885 continue; 886 887 di = ad->ad_devinfo; 888 889 /* 890 * We only attach devices which are present, enabled, and 891 * functioning properly. However, if a device is enabled, 892 * it is decoding resources and we should claim these, 893 * if possible. This requires changes to bus_space(9). 894 * Note: there is a possible race condition, because _STA 895 * may have changed since di->CurrentStatus was set. 896 */ 897 if (di->Type == ACPI_TYPE_DEVICE) { 898 899 if ((di->Valid & ACPI_VALID_STA) != 0 && 900 (di->CurrentStatus & ACPI_STA_OK) != ACPI_STA_OK) 901 continue; 902 } 903 904 if (di->Type == ACPI_TYPE_POWER) 905 continue; 906 907 if (di->Type == ACPI_TYPE_PROCESSOR) 908 continue; 909 910 if (acpi_match_hid(di, acpi_early_ids) != 0) 911 continue; 912 913 if (acpi_match_hid(di, acpi_ignored_ids) != 0) 914 continue; 915 916 if (acpi_match_hid(di, hpet_ids) != 0 && sc->sc_hpet != NULL) 917 continue; 918 919 aa.aa_node = ad; 920 aa.aa_iot = sc->sc_iot; 921 aa.aa_memt = sc->sc_memt; 922 aa.aa_pc = sc->sc_pc; 923 aa.aa_pciflags = sc->sc_pciflags; 924 aa.aa_ic = sc->sc_ic; 925 926 ad->ad_device = config_found_ia(sc->sc_dev, 927 "acpinodebus", &aa, acpi_print); 928 } 929 } 930 931 static void 932 acpi_rescan_capabilities(device_t self) 933 { 934 struct acpi_softc *sc = device_private(self); 935 struct acpi_devnode *ad; 936 ACPI_HANDLE tmp; 937 ACPI_STATUS rv; 938 939 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 940 941 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 942 continue; 943 944 /* 945 * Scan power resource capabilities. 946 * 947 * If any power states are supported, 948 * at least _PR0 and _PR3 must be present. 949 */ 950 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 951 952 if (ACPI_SUCCESS(rv)) { 953 ad->ad_flags |= ACPI_DEVICE_POWER; 954 acpi_power_add(ad); 955 } 956 957 /* 958 * Scan wake-up capabilities. 959 */ 960 if (ad->ad_wakedev != NULL) { 961 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 962 acpi_wakedev_add(ad); 963 } 964 965 /* 966 * Scan docking stations. 967 */ 968 rv = AcpiGetHandle(ad->ad_handle, "_DCK", &tmp); 969 970 if (ACPI_SUCCESS(rv)) 971 ad->ad_flags |= ACPI_DEVICE_DOCK; 972 973 /* 974 * Scan devices that are ejectable. 975 */ 976 rv = AcpiGetHandle(ad->ad_handle, "_EJ0", &tmp); 977 978 if (ACPI_SUCCESS(rv)) 979 ad->ad_flags |= ACPI_DEVICE_EJECT; 980 } 981 } 982 983 static int 984 acpi_print(void *aux, const char *pnp) 985 { 986 struct acpi_attach_args *aa = aux; 987 struct acpi_devnode *ad; 988 const char *hid, *uid; 989 ACPI_DEVICE_INFO *di; 990 991 ad = aa->aa_node; 992 di = ad->ad_devinfo; 993 994 hid = di->HardwareId.String; 995 uid = di->UniqueId.String; 996 997 if (pnp != NULL) { 998 999 if (di->Type != ACPI_TYPE_DEVICE) { 1000 1001 aprint_normal("%s (ACPI Object Type '%s') at %s", 1002 ad->ad_name, AcpiUtGetTypeName(ad->ad_type), pnp); 1003 1004 return UNCONF; 1005 } 1006 1007 if ((di->Valid & ACPI_VALID_HID) == 0 || hid == NULL) 1008 return 0; 1009 1010 aprint_normal("%s (%s) ", ad->ad_name, hid); 1011 acpi_print_dev(hid); 1012 aprint_normal("at %s", pnp); 1013 1014 return UNCONF; 1015 } 1016 1017 aprint_normal(" (%s", ad->ad_name); 1018 1019 if ((di->Valid & ACPI_VALID_HID) != 0 && hid != NULL) { 1020 1021 aprint_normal(", %s", hid); 1022 1023 if ((di->Valid & ACPI_VALID_UID) != 0 && uid != NULL) { 1024 1025 if (uid[0] == '\0') 1026 uid = "<null>"; 1027 1028 aprint_normal("-%s", uid); 1029 } 1030 } 1031 1032 aprint_normal(")"); 1033 1034 return UNCONF; 1035 } 1036 1037 /* 1038 * Notify. 1039 */ 1040 static void 1041 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1042 { 1043 struct acpi_softc *sc = acpi_softc; 1044 struct acpi_devnode *ad; 1045 1046 KASSERT(sc != NULL); 1047 KASSERT(aux == NULL); 1048 KASSERT(acpi_active != 0); 1049 1050 if (acpi_suspended != 0) 1051 return; 1052 1053 /* 1054 * System: 0x00 - 0x7F. 1055 * Device: 0x80 - 0xFF. 1056 */ 1057 switch (event) { 1058 1059 case ACPI_NOTIFY_BUS_CHECK: 1060 case ACPI_NOTIFY_DEVICE_CHECK: 1061 case ACPI_NOTIFY_DEVICE_WAKE: 1062 case ACPI_NOTIFY_EJECT_REQUEST: 1063 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1064 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1065 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1066 case ACPI_NOTIFY_POWER_FAULT: 1067 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1068 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1069 case ACPI_NOTIFY_RESERVED: 1070 case ACPI_NOTIFY_LOCALITY_UPDATE: 1071 break; 1072 } 1073 1074 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1075 "%s (%p)\n", event, acpi_name(handle), handle)); 1076 1077 /* 1078 * We deliver notifications only to drivers 1079 * that have been successfully attached and 1080 * that have registered a handler with us. 1081 * The opaque pointer is always the device_t. 1082 */ 1083 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1084 1085 if (ad->ad_device == NULL) 1086 continue; 1087 1088 if (ad->ad_notify == NULL) 1089 continue; 1090 1091 if (ad->ad_handle != handle) 1092 continue; 1093 1094 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1095 1096 return; 1097 } 1098 1099 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1100 "for %s (%p)\n", event, acpi_name(handle), handle); 1101 } 1102 1103 bool 1104 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1105 { 1106 struct acpi_softc *sc = acpi_softc; 1107 1108 KASSERT(sc != NULL); 1109 KASSERT(acpi_active != 0); 1110 1111 if (acpi_suspended != 0) 1112 goto fail; 1113 1114 if (ad == NULL || notify == NULL) 1115 goto fail; 1116 1117 ad->ad_notify = notify; 1118 1119 return true; 1120 1121 fail: 1122 aprint_error_dev(sc->sc_dev, "failed to register notify " 1123 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1124 1125 return false; 1126 } 1127 1128 void 1129 acpi_deregister_notify(struct acpi_devnode *ad) 1130 { 1131 1132 ad->ad_notify = NULL; 1133 } 1134 1135 /* 1136 * Fixed buttons. 1137 */ 1138 static void 1139 acpi_register_fixed_button(struct acpi_softc *sc, int event) 1140 { 1141 struct sysmon_pswitch *smpsw; 1142 ACPI_STATUS rv; 1143 int type; 1144 1145 switch (event) { 1146 1147 case ACPI_EVENT_POWER_BUTTON: 1148 1149 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1150 return; 1151 1152 type = PSWITCH_TYPE_POWER; 1153 smpsw = &sc->sc_smpsw_power; 1154 break; 1155 1156 case ACPI_EVENT_SLEEP_BUTTON: 1157 1158 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1159 return; 1160 1161 type = PSWITCH_TYPE_SLEEP; 1162 smpsw = &sc->sc_smpsw_sleep; 1163 break; 1164 1165 default: 1166 rv = AE_TYPE; 1167 goto fail; 1168 } 1169 1170 smpsw->smpsw_type = type; 1171 smpsw->smpsw_name = device_xname(sc->sc_dev); 1172 1173 if (sysmon_pswitch_register(smpsw) != 0) { 1174 rv = AE_ERROR; 1175 goto fail; 1176 } 1177 1178 AcpiClearEvent(event); 1179 1180 rv = AcpiInstallFixedEventHandler(event, 1181 acpi_fixed_button_handler, smpsw); 1182 1183 if (ACPI_FAILURE(rv)) { 1184 sysmon_pswitch_unregister(smpsw); 1185 goto fail; 1186 } 1187 1188 aprint_debug_dev(sc->sc_dev, "fixed %s button present\n", 1189 (type != ACPI_EVENT_SLEEP_BUTTON) ? "power" : "sleep"); 1190 1191 return; 1192 1193 fail: 1194 aprint_error_dev(sc->sc_dev, "failed to register " 1195 "fixed event %d: %s\n", event, AcpiFormatException(rv)); 1196 } 1197 1198 static void 1199 acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1200 { 1201 struct sysmon_pswitch *smpsw; 1202 ACPI_STATUS rv; 1203 1204 switch (event) { 1205 1206 case ACPI_EVENT_POWER_BUTTON: 1207 smpsw = &sc->sc_smpsw_power; 1208 1209 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1210 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1211 return; 1212 } 1213 1214 break; 1215 1216 case ACPI_EVENT_SLEEP_BUTTON: 1217 smpsw = &sc->sc_smpsw_sleep; 1218 1219 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1220 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1221 return; 1222 } 1223 1224 break; 1225 1226 default: 1227 rv = AE_TYPE; 1228 goto fail; 1229 } 1230 1231 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1232 1233 if (ACPI_SUCCESS(rv)) { 1234 sysmon_pswitch_unregister(smpsw); 1235 return; 1236 } 1237 1238 fail: 1239 aprint_error_dev(sc->sc_dev, "failed to deregister " 1240 "fixed event: %s\n", AcpiFormatException(rv)); 1241 } 1242 1243 static uint32_t 1244 acpi_fixed_button_handler(void *context) 1245 { 1246 static const int handler = OSL_NOTIFY_HANDLER; 1247 struct sysmon_pswitch *smpsw = context; 1248 1249 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1250 1251 return ACPI_INTERRUPT_HANDLED; 1252 } 1253 1254 static void 1255 acpi_fixed_button_pressed(void *context) 1256 { 1257 struct sysmon_pswitch *smpsw = context; 1258 1259 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1260 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1261 "power" : "sleep")); 1262 1263 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1264 } 1265 1266 /* 1267 * Sleep. 1268 */ 1269 static void 1270 acpi_sleep_init(struct acpi_softc *sc) 1271 { 1272 uint8_t a, b, i; 1273 ACPI_STATUS rv; 1274 1275 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1276 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1277 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1278 1279 /* 1280 * Evaluate supported sleep states. 1281 */ 1282 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1283 1284 rv = AcpiGetSleepTypeData(i, &a, &b); 1285 1286 if (ACPI_SUCCESS(rv)) 1287 sc->sc_sleepstates |= __BIT(i); 1288 } 1289 } 1290 1291 /* 1292 * Must be called with interrupts enabled. 1293 */ 1294 void 1295 acpi_enter_sleep_state(int state) 1296 { 1297 struct acpi_softc *sc = acpi_softc; 1298 ACPI_STATUS rv; 1299 int err; 1300 1301 if (acpi_softc == NULL) 1302 return; 1303 1304 if (state == sc->sc_sleepstate) 1305 return; 1306 1307 if (state < ACPI_STATE_S0 || state > ACPI_STATE_S5) 1308 return; 1309 1310 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1311 1312 switch (state) { 1313 1314 case ACPI_STATE_S0: 1315 sc->sc_sleepstate = ACPI_STATE_S0; 1316 return; 1317 1318 case ACPI_STATE_S1: 1319 case ACPI_STATE_S2: 1320 case ACPI_STATE_S3: 1321 case ACPI_STATE_S4: 1322 1323 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1324 aprint_error_dev(sc->sc_dev, "sleep state " 1325 "S%d is not available\n", state); 1326 return; 1327 } 1328 1329 /* 1330 * Evaluate the _TTS method. This should be done before 1331 * pmf_system_suspend(9) and the evaluation of _PTS. 1332 * We should also re-evaluate this once we return to 1333 * S0 or if we abort the sleep state transition in the 1334 * middle (see ACPI 3.0, section 7.3.6). In reality, 1335 * however, the _TTS method is seldom seen in the field. 1336 */ 1337 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1338 1339 if (ACPI_SUCCESS(rv)) 1340 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1341 1342 if (state != ACPI_STATE_S1 && 1343 pmf_system_suspend(PMF_Q_NONE) != true) { 1344 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1345 break; 1346 } 1347 1348 /* 1349 * This will evaluate the _PTS and _SST methods, 1350 * but unlike the documentation claims, not _GTS, 1351 * which is evaluated in AcpiEnterSleepState(). 1352 * This must be called with interrupts enabled. 1353 */ 1354 rv = AcpiEnterSleepStatePrep(state); 1355 1356 if (ACPI_FAILURE(rv)) { 1357 aprint_error_dev(sc->sc_dev, "failed to prepare " 1358 "S%d: %s\n", state, AcpiFormatException(rv)); 1359 break; 1360 } 1361 1362 /* 1363 * After the _PTS method has been evaluated, we can 1364 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1365 */ 1366 acpi_wakedev_commit(sc, state); 1367 1368 sc->sc_sleepstate = state; 1369 1370 if (state == ACPI_STATE_S1) { 1371 1372 /* 1373 * Before the transition to S1, CPU caches 1374 * must be flushed (see ACPI 4.0, 7.3.4.2). 1375 * 1376 * Note that interrupts must be off before 1377 * calling AcpiEnterSleepState(). Conversely, 1378 * AcpiLeaveSleepState() should always be 1379 * called with interrupts enabled. 1380 */ 1381 acpi_md_OsDisableInterrupt(); 1382 1383 ACPI_FLUSH_CPU_CACHE(); 1384 rv = AcpiEnterSleepState(state); 1385 1386 if (ACPI_FAILURE(rv)) 1387 aprint_error_dev(sc->sc_dev, "failed to " 1388 "enter S1: %s\n", AcpiFormatException(rv)); 1389 1390 /* 1391 * Clear fixed events and disable all GPEs before 1392 * interrupts are enabled. 1393 */ 1394 AcpiClearEvent(ACPI_EVENT_PMTIMER); 1395 AcpiClearEvent(ACPI_EVENT_GLOBAL); 1396 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON); 1397 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON); 1398 AcpiClearEvent(ACPI_EVENT_RTC); 1399 AcpiHwDisableAllGpes(); 1400 1401 acpi_md_OsEnableInterrupt(); 1402 rv = AcpiLeaveSleepState(state); 1403 1404 } else { 1405 1406 err = acpi_md_sleep(state); 1407 1408 if (state == ACPI_STATE_S4) 1409 AcpiEnable(); 1410 1411 (void)pmf_system_bus_resume(PMF_Q_NONE); 1412 (void)AcpiLeaveSleepState(state); 1413 (void)AcpiSetFirmwareWakingVector(0); 1414 (void)pmf_system_resume(PMF_Q_NONE); 1415 } 1416 1417 /* 1418 * No wake GPEs should be enabled at runtime. 1419 */ 1420 acpi_wakedev_commit(sc, ACPI_STATE_S0); 1421 break; 1422 1423 case ACPI_STATE_S5: 1424 1425 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1426 1427 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1428 1429 if (ACPI_FAILURE(rv)) { 1430 aprint_error_dev(sc->sc_dev, "failed to prepare " 1431 "S%d: %s\n", state, AcpiFormatException(rv)); 1432 break; 1433 } 1434 1435 (void)AcpiDisableAllGpes(); 1436 1437 DELAY(1000000); 1438 1439 sc->sc_sleepstate = state; 1440 acpi_md_OsDisableInterrupt(); 1441 1442 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1443 1444 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1445 1446 break; 1447 } 1448 1449 sc->sc_sleepstate = ACPI_STATE_S0; 1450 1451 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1452 } 1453 1454 /* 1455 * Sysctl. 1456 */ 1457 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1458 { 1459 const struct sysctlnode *rnode, *snode; 1460 int err; 1461 1462 err = sysctl_createv(clog, 0, NULL, &rnode, 1463 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", 1464 NULL, NULL, 0, NULL, 0, 1465 CTL_HW, CTL_EOL); 1466 1467 if (err != 0) 1468 return; 1469 1470 err = sysctl_createv(clog, 0, &rnode, &rnode, 1471 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1472 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1473 NULL, 0, NULL, 0, 1474 CTL_CREATE, CTL_EOL); 1475 1476 if (err != 0) 1477 return; 1478 1479 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1480 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1481 "root", SYSCTL_DESCR("ACPI root pointer"), 1482 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1483 CTL_CREATE, CTL_EOL); 1484 1485 err = sysctl_createv(clog, 0, &rnode, &snode, 1486 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1487 "sleep", SYSCTL_DESCR("ACPI sleep"), 1488 NULL, 0, NULL, 0, 1489 CTL_CREATE, CTL_EOL); 1490 1491 if (err != 0) 1492 return; 1493 1494 (void)sysctl_createv(NULL, 0, &snode, NULL, 1495 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1496 "state", SYSCTL_DESCR("System sleep state"), 1497 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1498 CTL_CREATE, CTL_EOL); 1499 1500 (void)sysctl_createv(NULL, 0, &snode, NULL, 1501 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1502 "states", SYSCTL_DESCR("Supported sleep states"), 1503 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1504 CTL_CREATE, CTL_EOL); 1505 1506 err = sysctl_createv(clog, 0, &rnode, &rnode, 1507 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1508 "stat", SYSCTL_DESCR("ACPI statistics"), 1509 NULL, 0, NULL, 0, 1510 CTL_CREATE, CTL_EOL); 1511 1512 if (err != 0) 1513 return; 1514 1515 (void)sysctl_createv(clog, 0, &rnode, NULL, 1516 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1517 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1518 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1519 CTL_CREATE, CTL_EOL); 1520 1521 (void)sysctl_createv(clog, 0, &rnode, NULL, 1522 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1523 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1524 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1525 CTL_CREATE, CTL_EOL); 1526 1527 (void)sysctl_createv(clog, 0, &rnode, NULL, 1528 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1529 "fixed", SYSCTL_DESCR("Number of fixed events"), 1530 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1531 CTL_CREATE, CTL_EOL); 1532 1533 (void)sysctl_createv(clog, 0, &rnode, NULL, 1534 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1535 "method", SYSCTL_DESCR("Number of methods executed"), 1536 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1537 CTL_CREATE, CTL_EOL); 1538 1539 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1540 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1541 } 1542 1543 static int 1544 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1545 { 1546 struct sysctlnode node; 1547 uint64_t t; 1548 int err, i; 1549 1550 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1551 t += AcpiFixedEventCount[i]; 1552 1553 node = *rnode; 1554 node.sysctl_data = &t; 1555 1556 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1557 1558 if (err || newp == NULL) 1559 return err; 1560 1561 return 0; 1562 } 1563 1564 static int 1565 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1566 { 1567 struct acpi_softc *sc = acpi_softc; 1568 struct sysctlnode node; 1569 int err, t; 1570 1571 if (acpi_softc == NULL) 1572 return ENOSYS; 1573 1574 node = *rnode; 1575 t = sc->sc_sleepstate; 1576 node.sysctl_data = &t; 1577 1578 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1579 1580 if (err || newp == NULL) 1581 return err; 1582 1583 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1584 return EINVAL; 1585 1586 acpi_enter_sleep_state(t); 1587 1588 return 0; 1589 } 1590 1591 static int 1592 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1593 { 1594 struct acpi_softc *sc = acpi_softc; 1595 struct sysctlnode node; 1596 char t[3 * 6 + 1]; 1597 int err; 1598 1599 if (acpi_softc == NULL) 1600 return ENOSYS; 1601 1602 (void)memset(t, '\0', sizeof(t)); 1603 1604 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1605 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1606 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1607 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1608 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1609 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1610 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1611 1612 node = *rnode; 1613 node.sysctl_data = &t; 1614 1615 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1616 1617 if (err || newp == NULL) 1618 return err; 1619 1620 return 0; 1621 } 1622 1623 /* 1624 * Tables. 1625 */ 1626 ACPI_PHYSICAL_ADDRESS 1627 acpi_OsGetRootPointer(void) 1628 { 1629 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1630 1631 /* 1632 * We let MD code handle this since there are multiple ways to do it: 1633 * 1634 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1635 * 1636 * IA-64: Use the EFI. 1637 */ 1638 PhysicalAddress = acpi_md_OsGetRootPointer(); 1639 1640 if (acpi_root_pointer == 0) 1641 acpi_root_pointer = PhysicalAddress; 1642 1643 return PhysicalAddress; 1644 } 1645 1646 static ACPI_TABLE_HEADER * 1647 acpi_map_rsdt(void) 1648 { 1649 ACPI_PHYSICAL_ADDRESS paddr; 1650 ACPI_TABLE_RSDP *rsdp; 1651 1652 paddr = AcpiOsGetRootPointer(); 1653 1654 if (paddr == 0) 1655 return NULL; 1656 1657 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1658 1659 if (rsdp == NULL) 1660 return NULL; 1661 1662 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1663 paddr = rsdp->XsdtPhysicalAddress; 1664 else 1665 paddr = rsdp->RsdtPhysicalAddress; 1666 1667 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1668 1669 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1670 } 1671 1672 /* 1673 * XXX: Refactor to be a generic function that unmaps tables. 1674 */ 1675 static void 1676 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1677 { 1678 1679 if (rsdt == NULL) 1680 return; 1681 1682 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1683 } 1684 1685 /* 1686 * XXX: Refactor to be a generic function that maps tables. 1687 */ 1688 ACPI_STATUS 1689 acpi_madt_map(void) 1690 { 1691 ACPI_STATUS rv; 1692 1693 if (madt_header != NULL) 1694 return AE_ALREADY_EXISTS; 1695 1696 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); 1697 1698 if (ACPI_FAILURE(rv)) 1699 return rv; 1700 1701 return AE_OK; 1702 } 1703 1704 void 1705 acpi_madt_unmap(void) 1706 { 1707 madt_header = NULL; 1708 } 1709 1710 /* 1711 * XXX: Refactor to be a generic function that walks tables. 1712 */ 1713 void 1714 acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) 1715 { 1716 ACPI_SUBTABLE_HEADER *hdrp; 1717 char *madtend, *where; 1718 1719 madtend = (char *)madt_header + madt_header->Length; 1720 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); 1721 1722 while (where < madtend) { 1723 1724 hdrp = (ACPI_SUBTABLE_HEADER *)where; 1725 1726 if (ACPI_FAILURE(func(hdrp, aux))) 1727 break; 1728 1729 where += hdrp->Length; 1730 } 1731 } 1732 1733 /* 1734 * Miscellaneous. 1735 */ 1736 static bool 1737 acpi_is_scope(struct acpi_devnode *ad) 1738 { 1739 int i; 1740 1741 /* 1742 * Return true if the node is a root scope. 1743 */ 1744 if (ad->ad_parent == NULL) 1745 return false; 1746 1747 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1748 return false; 1749 1750 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1751 1752 if (acpi_scopes[i] == NULL) 1753 continue; 1754 1755 if (ad->ad_handle == acpi_scopes[i]) 1756 return true; 1757 } 1758 1759 return false; 1760 } 1761 1762 /* 1763 * ACPIVERBOSE. 1764 */ 1765 void 1766 acpi_load_verbose(void) 1767 { 1768 1769 if (acpi_verbose_loaded == 0) 1770 module_autoload("acpiverbose", MODULE_CLASS_MISC); 1771 } 1772 1773 void 1774 acpi_print_verbose_stub(struct acpi_softc *sc) 1775 { 1776 1777 acpi_load_verbose(); 1778 1779 if (acpi_verbose_loaded != 0) 1780 acpi_print_verbose(sc); 1781 } 1782 1783 void 1784 acpi_print_dev_stub(const char *pnpstr) 1785 { 1786 1787 acpi_load_verbose(); 1788 1789 if (acpi_verbose_loaded != 0) 1790 acpi_print_dev(pnpstr); 1791 } 1792 1793 MALLOC_DECLARE(M_ACPI); /* XXX: ACPI_ACTIVATE_DEV should use kmem(9). */ 1794 1795 /* 1796 * ACPI_ACTIVATE_DEV. 1797 */ 1798 static void 1799 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 1800 { 1801 1802 #ifndef ACPI_ACTIVATE_DEV 1803 return; 1804 } 1805 #else 1806 static const int valid = ACPI_VALID_STA | ACPI_VALID_HID; 1807 ACPI_DEVICE_INFO *newdi; 1808 ACPI_STATUS rv; 1809 uint32_t old; 1810 1811 /* 1812 * If the device is valid and present, 1813 * but not enabled, try to activate it. 1814 */ 1815 if (((*di)->Valid & valid) != valid) 1816 return; 1817 1818 old = (*di)->CurrentStatus; 1819 1820 if ((old & (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED)) != 1821 ACPI_STA_DEVICE_PRESENT) 1822 return; 1823 1824 rv = acpi_allocate_resources(handle); 1825 1826 if (ACPI_FAILURE(rv)) 1827 goto fail; 1828 1829 rv = AcpiGetObjectInfo(handle, &newdi); 1830 1831 if (ACPI_FAILURE(rv)) 1832 goto fail; 1833 1834 ACPI_FREE(*di); 1835 *di = newdi; 1836 1837 aprint_verbose_dev(acpi_softc->sc_dev, 1838 "%s activated, STA 0x%08X -> STA 0x%08X\n", 1839 (*di)->HardwareId.String, old, (*di)->CurrentStatus); 1840 1841 return; 1842 1843 fail: 1844 aprint_error_dev(acpi_softc->sc_dev, "failed to " 1845 "activate %s\n", (*di)->HardwareId.String); 1846 } 1847 1848 /* 1849 * XXX: This very incomplete. 1850 */ 1851 ACPI_STATUS 1852 acpi_allocate_resources(ACPI_HANDLE handle) 1853 { 1854 ACPI_BUFFER bufp, bufc, bufn; 1855 ACPI_RESOURCE *resp, *resc, *resn; 1856 ACPI_RESOURCE_IRQ *irq; 1857 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 1858 ACPI_STATUS rv; 1859 uint delta; 1860 1861 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 1862 if (ACPI_FAILURE(rv)) 1863 goto out; 1864 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 1865 if (ACPI_FAILURE(rv)) { 1866 goto out1; 1867 } 1868 1869 bufn.Length = 1000; 1870 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 1871 resp = bufp.Pointer; 1872 resc = bufc.Pointer; 1873 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 1874 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1875 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 1876 resp = ACPI_NEXT_RESOURCE(resp); 1877 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 1878 break; 1879 /* Found identical Id */ 1880 resn->Type = resc->Type; 1881 switch (resc->Type) { 1882 case ACPI_RESOURCE_TYPE_IRQ: 1883 memcpy(&resn->Data, &resp->Data, 1884 sizeof(ACPI_RESOURCE_IRQ)); 1885 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 1886 irq->Interrupts[0] = 1887 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 1888 Interrupts[irq->InterruptCount-1]; 1889 irq->InterruptCount = 1; 1890 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 1891 break; 1892 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 1893 memcpy(&resn->Data, &resp->Data, 1894 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 1895 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 1896 #if 0 1897 /* 1898 * XXX: Not duplicating the interrupt logic above 1899 * because its not clear what it accomplishes. 1900 */ 1901 xirq->Interrupts[0] = 1902 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 1903 Interrupts[irq->NumberOfInterrupts-1]; 1904 xirq->NumberOfInterrupts = 1; 1905 #endif 1906 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 1907 break; 1908 case ACPI_RESOURCE_TYPE_IO: 1909 memcpy(&resn->Data, &resp->Data, 1910 sizeof(ACPI_RESOURCE_IO)); 1911 resn->Length = resp->Length; 1912 break; 1913 default: 1914 aprint_error_dev(acpi_softc->sc_dev, 1915 "%s: invalid type %u\n", __func__, resc->Type); 1916 rv = AE_BAD_DATA; 1917 goto out2; 1918 } 1919 resc = ACPI_NEXT_RESOURCE(resc); 1920 resn = ACPI_NEXT_RESOURCE(resn); 1921 resp = ACPI_NEXT_RESOURCE(resp); 1922 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 1923 if (delta >= 1924 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 1925 bufn.Length *= 2; 1926 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 1927 M_ACPI, M_WAITOK); 1928 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 1929 delta); 1930 } 1931 } 1932 1933 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1934 aprint_error_dev(acpi_softc->sc_dev, 1935 "%s: resc not exhausted\n", __func__); 1936 rv = AE_BAD_DATA; 1937 goto out3; 1938 } 1939 1940 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 1941 rv = AcpiSetCurrentResources(handle, &bufn); 1942 1943 if (ACPI_FAILURE(rv)) 1944 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 1945 "resources: %s\n", __func__, AcpiFormatException(rv)); 1946 1947 out3: 1948 free(bufn.Pointer, M_ACPI); 1949 out2: 1950 ACPI_FREE(bufc.Pointer); 1951 out1: 1952 ACPI_FREE(bufp.Pointer); 1953 out: 1954 return rv; 1955 } 1956 1957 #endif /* ACPI_ACTIVATE_DEV */ 1958