1 /* $NetBSD: acpi.c,v 1.250 2011/08/05 18:59:44 jakllsch 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 1.250 2011/08/05 18:59:44 jakllsch 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 ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, 194 void *, void **); 195 static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t, 196 void *, void **); 197 static void acpi_make_name(struct acpi_devnode *, uint32_t); 198 199 static int acpi_rescan(device_t, const char *, const int *); 200 static void acpi_rescan_early(struct acpi_softc *); 201 static void acpi_rescan_nodes(struct acpi_softc *); 202 static void acpi_rescan_capabilities(device_t); 203 static int acpi_print(void *aux, const char *); 204 205 static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); 206 207 static void acpi_register_fixed_button(struct acpi_softc *, int); 208 static void acpi_deregister_fixed_button(struct acpi_softc *, int); 209 static uint32_t acpi_fixed_button_handler(void *); 210 static void acpi_fixed_button_pressed(void *); 211 212 static void acpi_sleep_init(struct acpi_softc *); 213 214 static int sysctl_hw_acpi_fixedstats(SYSCTLFN_PROTO); 215 static int sysctl_hw_acpi_sleepstate(SYSCTLFN_PROTO); 216 static int sysctl_hw_acpi_sleepstates(SYSCTLFN_PROTO); 217 218 static bool acpi_is_scope(struct acpi_devnode *); 219 static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 220 static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 221 222 void acpi_print_verbose_stub(struct acpi_softc *); 223 void acpi_print_dev_stub(const char *); 224 225 static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **); 226 ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE); 227 228 void (*acpi_print_verbose)(struct acpi_softc *) = acpi_print_verbose_stub; 229 void (*acpi_print_dev)(const char *) = acpi_print_dev_stub; 230 231 CFATTACH_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 */ 240 int 241 acpi_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; 325 326 fail: 327 (void)AcpiTerminate(); 328 329 return 0; 330 } 331 332 void 333 acpi_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 } 344 345 int 346 acpi_check(device_t parent, const char *ifattr) 347 { 348 return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); 349 } 350 351 int 352 acpi_reset(void) 353 { 354 struct acpi_softc *sc = acpi_softc; 355 ACPI_GENERIC_ADDRESS *ResetReg; 356 ACPI_PCI_ID PciId; 357 ACPI_STATUS status; 358 359 if (sc == NULL) 360 return ENXIO; 361 362 ResetReg = &AcpiGbl_FADT.ResetRegister; 363 364 /* Check if the reset register is supported */ 365 if (!(AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) || 366 !ResetReg->Address) { 367 return ENOENT; 368 } 369 370 switch (ResetReg->SpaceId) { 371 case ACPI_ADR_SPACE_PCI_CONFIG: 372 PciId.Segment = PciId.Bus = 0; 373 PciId.Device = ACPI_GAS_PCI_DEV(ResetReg->Address); 374 PciId.Function = ACPI_GAS_PCI_FUNC(ResetReg->Address); 375 status = AcpiOsWritePciConfiguration(&PciId, 376 ACPI_GAS_PCI_REGOFF(ResetReg->Address), 377 AcpiGbl_FADT.ResetValue, ResetReg->BitWidth); 378 break; 379 case ACPI_ADR_SPACE_SYSTEM_IO: 380 case ACPI_ADR_SPACE_SYSTEM_MEMORY: 381 status = AcpiReset(); 382 break; 383 default: 384 status = AE_TYPE; 385 break; 386 } 387 388 return ACPI_FAILURE(status) ? EIO : 0; 389 } 390 391 /* 392 * Autoconfiguration. 393 */ 394 static int 395 acpi_match(device_t parent, cfdata_t match, void *aux) 396 { 397 /* 398 * XXX: Nada; MD code has called acpi_probe(). 399 */ 400 return 1; 401 } 402 403 static int 404 acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 405 { 406 struct cfattach *ca; 407 408 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 409 410 return (ca == &acpi_ca); 411 } 412 413 static void 414 acpi_attach(device_t parent, device_t self, void *aux) 415 { 416 struct acpi_softc *sc = device_private(self); 417 struct acpibus_attach_args *aa = aux; 418 ACPI_TABLE_HEADER *rsdt; 419 ACPI_STATUS rv; 420 421 aprint_naive("\n"); 422 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 423 424 if (acpi_softc != NULL) 425 panic("%s: already attached", __func__); 426 427 rsdt = acpi_map_rsdt(); 428 429 if (rsdt == NULL) 430 aprint_error_dev(self, "X/RSDT: Not found\n"); 431 else { 432 aprint_verbose_dev(self, 433 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 434 rsdt->OemId, rsdt->OemTableId, 435 rsdt->OemRevision, 436 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 437 } 438 439 acpi_unmap_rsdt(rsdt); 440 441 sc->sc_dev = self; 442 sc->sc_root = NULL; 443 444 sc->sc_sleepstate = ACPI_STATE_S0; 445 sc->sc_quirks = acpi_find_quirks(); 446 447 sysmon_power_settype("acpi"); 448 449 sc->sc_iot = aa->aa_iot; 450 sc->sc_memt = aa->aa_memt; 451 sc->sc_pc = aa->aa_pc; 452 sc->sc_pciflags = aa->aa_pciflags; 453 sc->sc_ic = aa->aa_ic; 454 455 SIMPLEQ_INIT(&sc->ad_head); 456 457 acpi_softc = sc; 458 459 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) 460 aprint_error_dev(self, "couldn't establish power handler\n"); 461 462 /* 463 * Bring ACPICA on-line. 464 */ 465 #define ACPI_ENABLE_PHASE1 \ 466 (ACPI_NO_HANDLER_INIT | ACPI_NO_EVENT_INIT) 467 #define ACPI_ENABLE_PHASE2 \ 468 (ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE | \ 469 ACPI_NO_ADDRESS_SPACE_INIT) 470 471 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE1); 472 473 if (ACPI_FAILURE(rv)) 474 goto fail; 475 476 acpi_md_callback(); 477 478 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE2); 479 480 if (ACPI_FAILURE(rv)) 481 goto fail; 482 483 /* 484 * Early initialization of acpiec(4) via ECDT. 485 */ 486 (void)config_found_ia(self, "acpiecdtbus", aa, NULL); 487 488 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 489 490 if (ACPI_FAILURE(rv)) 491 goto fail; 492 493 /* 494 * Early initialization of the _PDC control method 495 * that may load additional SSDT tables dynamically. 496 */ 497 (void)acpi_md_pdc(); 498 499 /* 500 * Install global notify handlers. 501 */ 502 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 503 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 504 505 if (ACPI_FAILURE(rv)) 506 goto fail; 507 508 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 509 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 510 511 if (ACPI_FAILURE(rv)) 512 goto fail; 513 514 acpi_active = 1; 515 516 /* Show SCI interrupt. */ 517 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 518 AcpiGbl_FADT.SciInterrupt); 519 520 /* 521 * Install fixed-event handlers. 522 */ 523 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 524 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 525 526 acpitimer_init(sc); 527 528 /* 529 * Scan the namespace and build our device tree. 530 */ 531 acpi_build_tree(sc); 532 acpi_sleep_init(sc); 533 534 #ifdef ACPI_DEBUG 535 acpi_debug_init(); 536 #endif 537 538 /* 539 * Print debug information. 540 */ 541 acpi_print_verbose(sc); 542 543 return; 544 545 fail: 546 aprint_error("%s: failed to initialize ACPI: %s\n", 547 __func__, AcpiFormatException(rv)); 548 } 549 550 /* 551 * XXX: This is incomplete. 552 */ 553 static int 554 acpi_detach(device_t self, int flags) 555 { 556 struct acpi_softc *sc = device_private(self); 557 ACPI_STATUS rv; 558 int rc; 559 560 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 561 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 562 563 if (ACPI_FAILURE(rv)) 564 return EBUSY; 565 566 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 567 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 568 569 if (ACPI_FAILURE(rv)) 570 return EBUSY; 571 572 if ((rc = config_detach_children(self, flags)) != 0) 573 return rc; 574 575 if ((rc = acpitimer_detach()) != 0) 576 return rc; 577 578 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 579 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 580 581 pmf_device_deregister(self); 582 583 acpi_softc = NULL; 584 585 return 0; 586 } 587 588 static void 589 acpi_childdet(device_t self, device_t child) 590 { 591 struct acpi_softc *sc = device_private(self); 592 struct acpi_devnode *ad; 593 594 if (sc->sc_apmbus == child) 595 sc->sc_apmbus = NULL; 596 597 if (sc->sc_hpet == child) 598 sc->sc_hpet = NULL; 599 600 if (sc->sc_wdrt == child) 601 sc->sc_wdrt = NULL; 602 603 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 604 605 if (ad->ad_device == child) 606 ad->ad_device = NULL; 607 } 608 } 609 610 static bool 611 acpi_suspend(device_t dv, const pmf_qual_t *qual) 612 { 613 614 acpi_suspended = 1; 615 616 return true; 617 } 618 619 static bool 620 acpi_resume(device_t dv, const pmf_qual_t *qual) 621 { 622 623 acpi_suspended = 0; 624 625 return true; 626 } 627 628 /* 629 * Namespace scan. 630 */ 631 static void 632 acpi_build_tree(struct acpi_softc *sc) 633 { 634 struct acpi_walkcontext awc; 635 636 /* 637 * Get the root scope handles. 638 */ 639 KASSERT(__arraycount(acpi_scopes) == 4); 640 641 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 642 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 643 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 644 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 645 646 /* 647 * Make the root node. 648 */ 649 awc.aw_sc = sc; 650 awc.aw_parent = NULL; 651 652 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 653 654 KASSERT(sc->sc_root == NULL); 655 KASSERT(awc.aw_parent != NULL); 656 657 sc->sc_root = awc.aw_parent; 658 659 /* 660 * Build the internal namespace. 661 */ 662 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 663 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 664 665 /* 666 * Scan the internal namespace. 667 */ 668 (void)acpi_pcidev_scan(sc->sc_root); 669 (void)acpi_rescan(sc->sc_dev, NULL, NULL); 670 671 /* 672 * Update GPE information. 673 * 674 * Note that this must be called after 675 * all GPE handlers have been installed. 676 */ 677 (void)AcpiUpdateAllGpes(); 678 679 /* 680 * Defer rest of the configuration. 681 */ 682 (void)config_defer(sc->sc_dev, acpi_rescan_capabilities); 683 } 684 685 static ACPI_STATUS 686 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 687 void *context, void **status) 688 { 689 struct acpi_walkcontext *awc = context; 690 struct acpi_softc *sc = awc->aw_sc; 691 struct acpi_devnode *ad; 692 ACPI_DEVICE_INFO *devinfo; 693 ACPI_OBJECT_TYPE type; 694 ACPI_STATUS rv; 695 696 rv = AcpiGetObjectInfo(handle, &devinfo); 697 698 if (ACPI_FAILURE(rv)) 699 return AE_OK; /* Do not terminate the walk. */ 700 701 type = devinfo->Type; 702 703 switch (type) { 704 705 case ACPI_TYPE_DEVICE: 706 acpi_activate_device(handle, &devinfo); 707 case ACPI_TYPE_PROCESSOR: 708 case ACPI_TYPE_THERMAL: 709 case ACPI_TYPE_POWER: 710 711 ad = kmem_zalloc(sizeof(*ad), KM_NOSLEEP); 712 713 if (ad == NULL) 714 return AE_NO_MEMORY; 715 716 ad->ad_device = NULL; 717 ad->ad_notify = NULL; 718 ad->ad_pciinfo = NULL; 719 ad->ad_wakedev = NULL; 720 721 ad->ad_type = type; 722 ad->ad_handle = handle; 723 ad->ad_devinfo = devinfo; 724 725 ad->ad_root = sc->sc_dev; 726 ad->ad_parent = awc->aw_parent; 727 728 acpi_match_node_init(ad); 729 acpi_make_name(ad, devinfo->Name); 730 731 /* 732 * Identify wake GPEs from the _PRW. Note that 733 * AcpiUpdateAllGpes() must be called afterwards. 734 */ 735 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) 736 acpi_wakedev_init(ad); 737 738 SIMPLEQ_INIT(&ad->ad_child_head); 739 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 740 741 if (ad->ad_parent != NULL) { 742 743 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 744 ad, ad_child_list); 745 } 746 747 awc->aw_parent = ad; 748 } 749 750 return AE_OK; 751 } 752 753 static ACPI_STATUS 754 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 755 void *context, void **status) 756 { 757 struct acpi_walkcontext *awc = context; 758 759 KASSERT(awc != NULL); 760 KASSERT(awc->aw_parent != NULL); 761 762 if (handle == awc->aw_parent->ad_handle) 763 awc->aw_parent = awc->aw_parent->ad_parent; 764 765 return AE_OK; 766 } 767 768 static void 769 acpi_make_name(struct acpi_devnode *ad, uint32_t name) 770 { 771 ACPI_NAME_UNION *anu; 772 int clear, i; 773 774 anu = (ACPI_NAME_UNION *)&name; 775 ad->ad_name[4] = '\0'; 776 777 for (i = 3, clear = 0; i >= 0; i--) { 778 779 if (clear == 0 && anu->Ascii[i] == '_') 780 ad->ad_name[i] = '\0'; 781 else { 782 ad->ad_name[i] = anu->Ascii[i]; 783 clear = 1; 784 } 785 } 786 787 if (ad->ad_name[0] == '\0') 788 ad->ad_name[0] = '_'; 789 } 790 791 /* 792 * Device attachment. 793 */ 794 static int 795 acpi_rescan(device_t self, const char *ifattr, const int *locators) 796 { 797 struct acpi_softc *sc = device_private(self); 798 struct acpi_attach_args aa; 799 800 /* 801 * Try to attach hpet(4) first via a specific table. 802 */ 803 aa.aa_memt = sc->sc_memt; 804 805 if (ifattr_match(ifattr, "acpihpetbus") && sc->sc_hpet == NULL) 806 sc->sc_hpet = config_found_ia(sc->sc_dev, 807 "acpihpetbus", &aa, NULL); 808 809 /* 810 * A two-pass scan for acpinodebus. 811 */ 812 if (ifattr_match(ifattr, "acpinodebus")) { 813 acpi_rescan_early(sc); 814 acpi_rescan_nodes(sc); 815 } 816 817 /* 818 * Attach APM emulation and acpiwdrt(4). 819 */ 820 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 821 sc->sc_apmbus = config_found_ia(sc->sc_dev, 822 "acpiapmbus", NULL, NULL); 823 824 if (ifattr_match(ifattr, "acpiwdrtbus") && sc->sc_wdrt == NULL) 825 sc->sc_wdrt = config_found_ia(sc->sc_dev, 826 "acpiwdrtbus", NULL, NULL); 827 828 return 0; 829 } 830 831 static void 832 acpi_rescan_early(struct acpi_softc *sc) 833 { 834 struct acpi_attach_args aa; 835 struct acpi_devnode *ad; 836 837 /* 838 * First scan for devices such as acpiec(4) that 839 * should be always attached before anything else. 840 * We want these devices to attach regardless of 841 * the device status and other restrictions. 842 */ 843 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 844 845 if (ad->ad_device != NULL) 846 continue; 847 848 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 849 continue; 850 851 if (acpi_match_hid(ad->ad_devinfo, acpi_early_ids) == 0) 852 continue; 853 854 aa.aa_node = ad; 855 aa.aa_iot = sc->sc_iot; 856 aa.aa_memt = sc->sc_memt; 857 aa.aa_pc = sc->sc_pc; 858 aa.aa_pciflags = sc->sc_pciflags; 859 aa.aa_ic = sc->sc_ic; 860 861 ad->ad_device = config_found_ia(sc->sc_dev, 862 "acpinodebus", &aa, acpi_print); 863 } 864 } 865 866 static void 867 acpi_rescan_nodes(struct acpi_softc *sc) 868 { 869 const char * const hpet_ids[] = { "PNP0103", NULL }; 870 struct acpi_attach_args aa; 871 struct acpi_devnode *ad; 872 ACPI_DEVICE_INFO *di; 873 874 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 875 876 if (ad->ad_device != NULL) 877 continue; 878 879 /* 880 * There is a bug in ACPICA: it defines the type 881 * of the scopes incorrectly for its own reasons. 882 */ 883 if (acpi_is_scope(ad) != false) 884 continue; 885 886 di = ad->ad_devinfo; 887 888 /* 889 * We only attach devices which are present, enabled, and 890 * functioning properly. However, if a device is enabled, 891 * it is decoding resources and we should claim these, 892 * if possible. This requires changes to bus_space(9). 893 * Note: there is a possible race condition, because _STA 894 * may have changed since di->CurrentStatus was set. 895 */ 896 if (di->Type == ACPI_TYPE_DEVICE) { 897 898 if ((di->Valid & ACPI_VALID_STA) != 0 && 899 (di->CurrentStatus & ACPI_STA_OK) != ACPI_STA_OK) 900 continue; 901 } 902 903 if (di->Type == ACPI_TYPE_POWER) 904 continue; 905 906 if (di->Type == ACPI_TYPE_PROCESSOR) 907 continue; 908 909 if (acpi_match_hid(di, acpi_early_ids) != 0) 910 continue; 911 912 if (acpi_match_hid(di, acpi_ignored_ids) != 0) 913 continue; 914 915 if (acpi_match_hid(di, hpet_ids) != 0 && sc->sc_hpet != NULL) 916 continue; 917 918 aa.aa_node = ad; 919 aa.aa_iot = sc->sc_iot; 920 aa.aa_memt = sc->sc_memt; 921 aa.aa_pc = sc->sc_pc; 922 aa.aa_pciflags = sc->sc_pciflags; 923 aa.aa_ic = sc->sc_ic; 924 925 ad->ad_device = config_found_ia(sc->sc_dev, 926 "acpinodebus", &aa, acpi_print); 927 } 928 } 929 930 static void 931 acpi_rescan_capabilities(device_t self) 932 { 933 struct acpi_softc *sc = device_private(self); 934 struct acpi_devnode *ad; 935 ACPI_HANDLE tmp; 936 ACPI_STATUS rv; 937 938 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 939 940 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 941 continue; 942 943 /* 944 * Scan power resource capabilities. 945 * 946 * If any power states are supported, 947 * at least _PR0 and _PR3 must be present. 948 */ 949 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 950 951 if (ACPI_SUCCESS(rv)) { 952 ad->ad_flags |= ACPI_DEVICE_POWER; 953 acpi_power_add(ad); 954 } 955 956 /* 957 * Scan wake-up capabilities. 958 */ 959 if (ad->ad_wakedev != NULL) { 960 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 961 acpi_wakedev_add(ad); 962 } 963 964 /* 965 * Scan docking stations. 966 */ 967 rv = AcpiGetHandle(ad->ad_handle, "_DCK", &tmp); 968 969 if (ACPI_SUCCESS(rv)) 970 ad->ad_flags |= ACPI_DEVICE_DOCK; 971 972 /* 973 * Scan devices that are ejectable. 974 */ 975 rv = AcpiGetHandle(ad->ad_handle, "_EJ0", &tmp); 976 977 if (ACPI_SUCCESS(rv)) 978 ad->ad_flags |= ACPI_DEVICE_EJECT; 979 } 980 } 981 982 static int 983 acpi_print(void *aux, const char *pnp) 984 { 985 struct acpi_attach_args *aa = aux; 986 struct acpi_devnode *ad; 987 const char *hid, *uid; 988 ACPI_DEVICE_INFO *di; 989 990 ad = aa->aa_node; 991 di = ad->ad_devinfo; 992 993 hid = di->HardwareId.String; 994 uid = di->UniqueId.String; 995 996 if (pnp != NULL) { 997 998 if (di->Type != ACPI_TYPE_DEVICE) { 999 1000 aprint_normal("%s (ACPI Object Type '%s') at %s", 1001 ad->ad_name, AcpiUtGetTypeName(ad->ad_type), pnp); 1002 1003 return UNCONF; 1004 } 1005 1006 if ((di->Valid & ACPI_VALID_HID) == 0 || hid == NULL) 1007 return 0; 1008 1009 aprint_normal("%s (%s) ", ad->ad_name, hid); 1010 acpi_print_dev(hid); 1011 aprint_normal("at %s", pnp); 1012 1013 return UNCONF; 1014 } 1015 1016 aprint_normal(" (%s", ad->ad_name); 1017 1018 if ((di->Valid & ACPI_VALID_HID) != 0 && hid != NULL) { 1019 1020 aprint_normal(", %s", hid); 1021 1022 if ((di->Valid & ACPI_VALID_UID) != 0 && uid != NULL) { 1023 1024 if (uid[0] == '\0') 1025 uid = "<null>"; 1026 1027 aprint_normal("-%s", uid); 1028 } 1029 } 1030 1031 aprint_normal(")"); 1032 1033 return UNCONF; 1034 } 1035 1036 /* 1037 * Notify. 1038 */ 1039 static void 1040 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1041 { 1042 struct acpi_softc *sc = acpi_softc; 1043 struct acpi_devnode *ad; 1044 1045 KASSERT(sc != NULL); 1046 KASSERT(aux == NULL); 1047 KASSERT(acpi_active != 0); 1048 1049 if (acpi_suspended != 0) 1050 return; 1051 1052 /* 1053 * System: 0x00 - 0x7F. 1054 * Device: 0x80 - 0xFF. 1055 */ 1056 switch (event) { 1057 1058 case ACPI_NOTIFY_BUS_CHECK: 1059 case ACPI_NOTIFY_DEVICE_CHECK: 1060 case ACPI_NOTIFY_DEVICE_WAKE: 1061 case ACPI_NOTIFY_EJECT_REQUEST: 1062 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1063 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1064 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1065 case ACPI_NOTIFY_POWER_FAULT: 1066 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1067 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1068 case ACPI_NOTIFY_RESERVED: 1069 case ACPI_NOTIFY_LOCALITY_UPDATE: 1070 break; 1071 } 1072 1073 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1074 "%s (%p)\n", event, acpi_name(handle), handle)); 1075 1076 /* 1077 * We deliver notifications only to drivers 1078 * that have been successfully attached and 1079 * that have registered a handler with us. 1080 * The opaque pointer is always the device_t. 1081 */ 1082 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1083 1084 if (ad->ad_device == NULL) 1085 continue; 1086 1087 if (ad->ad_notify == NULL) 1088 continue; 1089 1090 if (ad->ad_handle != handle) 1091 continue; 1092 1093 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1094 1095 return; 1096 } 1097 1098 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1099 "for %s (%p)\n", event, acpi_name(handle), handle); 1100 } 1101 1102 bool 1103 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1104 { 1105 struct acpi_softc *sc = acpi_softc; 1106 1107 KASSERT(sc != NULL); 1108 KASSERT(acpi_active != 0); 1109 1110 if (acpi_suspended != 0) 1111 goto fail; 1112 1113 if (ad == NULL || notify == NULL) 1114 goto fail; 1115 1116 ad->ad_notify = notify; 1117 1118 return true; 1119 1120 fail: 1121 aprint_error_dev(sc->sc_dev, "failed to register notify " 1122 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1123 1124 return false; 1125 } 1126 1127 void 1128 acpi_deregister_notify(struct acpi_devnode *ad) 1129 { 1130 1131 ad->ad_notify = NULL; 1132 } 1133 1134 /* 1135 * Fixed buttons. 1136 */ 1137 static void 1138 acpi_register_fixed_button(struct acpi_softc *sc, int event) 1139 { 1140 struct sysmon_pswitch *smpsw; 1141 ACPI_STATUS rv; 1142 int type; 1143 1144 switch (event) { 1145 1146 case ACPI_EVENT_POWER_BUTTON: 1147 1148 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1149 return; 1150 1151 type = PSWITCH_TYPE_POWER; 1152 smpsw = &sc->sc_smpsw_power; 1153 break; 1154 1155 case ACPI_EVENT_SLEEP_BUTTON: 1156 1157 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1158 return; 1159 1160 type = PSWITCH_TYPE_SLEEP; 1161 smpsw = &sc->sc_smpsw_sleep; 1162 break; 1163 1164 default: 1165 rv = AE_TYPE; 1166 goto fail; 1167 } 1168 1169 smpsw->smpsw_type = type; 1170 smpsw->smpsw_name = device_xname(sc->sc_dev); 1171 1172 if (sysmon_pswitch_register(smpsw) != 0) { 1173 rv = AE_ERROR; 1174 goto fail; 1175 } 1176 1177 AcpiClearEvent(event); 1178 1179 rv = AcpiInstallFixedEventHandler(event, 1180 acpi_fixed_button_handler, smpsw); 1181 1182 if (ACPI_FAILURE(rv)) { 1183 sysmon_pswitch_unregister(smpsw); 1184 goto fail; 1185 } 1186 1187 aprint_debug_dev(sc->sc_dev, "fixed %s button present\n", 1188 (type != ACPI_EVENT_SLEEP_BUTTON) ? "power" : "sleep"); 1189 1190 return; 1191 1192 fail: 1193 aprint_error_dev(sc->sc_dev, "failed to register " 1194 "fixed event %d: %s\n", event, AcpiFormatException(rv)); 1195 } 1196 1197 static void 1198 acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1199 { 1200 struct sysmon_pswitch *smpsw; 1201 ACPI_STATUS rv; 1202 1203 switch (event) { 1204 1205 case ACPI_EVENT_POWER_BUTTON: 1206 smpsw = &sc->sc_smpsw_power; 1207 1208 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1209 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1210 return; 1211 } 1212 1213 break; 1214 1215 case ACPI_EVENT_SLEEP_BUTTON: 1216 smpsw = &sc->sc_smpsw_sleep; 1217 1218 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1219 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1220 return; 1221 } 1222 1223 break; 1224 1225 default: 1226 rv = AE_TYPE; 1227 goto fail; 1228 } 1229 1230 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1231 1232 if (ACPI_SUCCESS(rv)) { 1233 sysmon_pswitch_unregister(smpsw); 1234 return; 1235 } 1236 1237 fail: 1238 aprint_error_dev(sc->sc_dev, "failed to deregister " 1239 "fixed event: %s\n", AcpiFormatException(rv)); 1240 } 1241 1242 static uint32_t 1243 acpi_fixed_button_handler(void *context) 1244 { 1245 static const int handler = OSL_NOTIFY_HANDLER; 1246 struct sysmon_pswitch *smpsw = context; 1247 1248 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1249 1250 return ACPI_INTERRUPT_HANDLED; 1251 } 1252 1253 static void 1254 acpi_fixed_button_pressed(void *context) 1255 { 1256 struct sysmon_pswitch *smpsw = context; 1257 1258 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1259 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1260 "power" : "sleep")); 1261 1262 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1263 } 1264 1265 /* 1266 * Sleep. 1267 */ 1268 static void 1269 acpi_sleep_init(struct acpi_softc *sc) 1270 { 1271 uint8_t a, b, i; 1272 ACPI_STATUS rv; 1273 1274 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1275 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1276 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1277 1278 /* 1279 * Evaluate supported sleep states. 1280 */ 1281 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1282 1283 rv = AcpiGetSleepTypeData(i, &a, &b); 1284 1285 if (ACPI_SUCCESS(rv)) 1286 sc->sc_sleepstates |= __BIT(i); 1287 } 1288 } 1289 1290 /* 1291 * Must be called with interrupts enabled. 1292 */ 1293 void 1294 acpi_enter_sleep_state(int state) 1295 { 1296 struct acpi_softc *sc = acpi_softc; 1297 ACPI_STATUS rv; 1298 int err; 1299 1300 if (acpi_softc == NULL) 1301 return; 1302 1303 if (state == sc->sc_sleepstate) 1304 return; 1305 1306 if (state < ACPI_STATE_S0 || state > ACPI_STATE_S5) 1307 return; 1308 1309 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1310 1311 switch (state) { 1312 1313 case ACPI_STATE_S0: 1314 sc->sc_sleepstate = ACPI_STATE_S0; 1315 return; 1316 1317 case ACPI_STATE_S1: 1318 case ACPI_STATE_S2: 1319 case ACPI_STATE_S3: 1320 case ACPI_STATE_S4: 1321 1322 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1323 aprint_error_dev(sc->sc_dev, "sleep state " 1324 "S%d is not available\n", state); 1325 return; 1326 } 1327 1328 /* 1329 * Evaluate the _TTS method. This should be done before 1330 * pmf_system_suspend(9) and the evaluation of _PTS. 1331 * We should also re-evaluate this once we return to 1332 * S0 or if we abort the sleep state transition in the 1333 * middle (see ACPI 3.0, section 7.3.6). In reality, 1334 * however, the _TTS method is seldom seen in the field. 1335 */ 1336 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1337 1338 if (ACPI_SUCCESS(rv)) 1339 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1340 1341 if (state != ACPI_STATE_S1 && 1342 pmf_system_suspend(PMF_Q_NONE) != true) { 1343 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1344 break; 1345 } 1346 1347 /* 1348 * This will evaluate the _PTS and _SST methods, 1349 * but unlike the documentation claims, not _GTS, 1350 * which is evaluated in AcpiEnterSleepState(). 1351 * This must be called with interrupts enabled. 1352 */ 1353 rv = AcpiEnterSleepStatePrep(state); 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 /* 1362 * After the _PTS method has been evaluated, we can 1363 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1364 */ 1365 acpi_wakedev_commit(sc, state); 1366 1367 sc->sc_sleepstate = state; 1368 1369 if (state == ACPI_STATE_S1) { 1370 1371 /* 1372 * Before the transition to S1, CPU caches 1373 * must be flushed (see ACPI 4.0, 7.3.4.2). 1374 * 1375 * Note that interrupts must be off before 1376 * calling AcpiEnterSleepState(). Conversely, 1377 * AcpiLeaveSleepState() should always be 1378 * called with interrupts enabled. 1379 */ 1380 acpi_md_OsDisableInterrupt(); 1381 1382 ACPI_FLUSH_CPU_CACHE(); 1383 rv = AcpiEnterSleepState(state); 1384 1385 if (ACPI_FAILURE(rv)) 1386 aprint_error_dev(sc->sc_dev, "failed to " 1387 "enter S1: %s\n", AcpiFormatException(rv)); 1388 1389 acpi_md_OsEnableInterrupt(); 1390 rv = AcpiLeaveSleepState(state); 1391 1392 } else { 1393 1394 err = acpi_md_sleep(state); 1395 1396 if (state == ACPI_STATE_S4) 1397 AcpiEnable(); 1398 1399 (void)pmf_system_bus_resume(PMF_Q_NONE); 1400 (void)AcpiLeaveSleepState(state); 1401 (void)AcpiSetFirmwareWakingVector(0); 1402 (void)pmf_system_resume(PMF_Q_NONE); 1403 } 1404 1405 /* 1406 * No wake GPEs should be enabled at runtime. 1407 */ 1408 acpi_wakedev_commit(sc, ACPI_STATE_S0); 1409 break; 1410 1411 case ACPI_STATE_S5: 1412 1413 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1414 1415 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1416 1417 if (ACPI_FAILURE(rv)) { 1418 aprint_error_dev(sc->sc_dev, "failed to prepare " 1419 "S%d: %s\n", state, AcpiFormatException(rv)); 1420 break; 1421 } 1422 1423 (void)AcpiDisableAllGpes(); 1424 1425 DELAY(1000000); 1426 1427 sc->sc_sleepstate = state; 1428 acpi_md_OsDisableInterrupt(); 1429 1430 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1431 1432 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1433 1434 break; 1435 } 1436 1437 sc->sc_sleepstate = ACPI_STATE_S0; 1438 1439 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1440 } 1441 1442 /* 1443 * Sysctl. 1444 */ 1445 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1446 { 1447 const struct sysctlnode *mnode, *rnode, *snode; 1448 int err; 1449 1450 err = sysctl_createv(clog, 0, NULL, &rnode, 1451 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", 1452 NULL, NULL, 0, NULL, 0, 1453 CTL_HW, CTL_EOL); 1454 1455 if (err != 0) 1456 return; 1457 1458 err = sysctl_createv(clog, 0, &rnode, &rnode, 1459 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1460 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1461 NULL, 0, NULL, 0, 1462 CTL_CREATE, CTL_EOL); 1463 1464 if (err != 0) 1465 return; 1466 1467 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1468 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1469 "root", SYSCTL_DESCR("ACPI root pointer"), 1470 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1471 CTL_CREATE, CTL_EOL); 1472 1473 err = sysctl_createv(clog, 0, &rnode, &snode, 1474 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1475 "sleep", SYSCTL_DESCR("ACPI sleep"), 1476 NULL, 0, NULL, 0, 1477 CTL_CREATE, CTL_EOL); 1478 1479 if (err != 0) 1480 return; 1481 1482 (void)sysctl_createv(NULL, 0, &snode, NULL, 1483 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1484 "state", SYSCTL_DESCR("System sleep state"), 1485 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1486 CTL_CREATE, CTL_EOL); 1487 1488 (void)sysctl_createv(NULL, 0, &snode, NULL, 1489 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1490 "states", SYSCTL_DESCR("Supported sleep states"), 1491 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1492 CTL_CREATE, CTL_EOL); 1493 1494 /* 1495 * For the time being, machdep.sleep_state 1496 * is provided for backwards compatibility. 1497 */ 1498 err = sysctl_createv(NULL, 0, NULL, &mnode, 1499 CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep", 1500 NULL, NULL, 0, NULL, 0, 1501 CTL_MACHDEP, CTL_EOL); 1502 1503 if (err == 0) { 1504 1505 (void)sysctl_createv(NULL, 0, &mnode, NULL, 1506 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1507 "sleep_state", SYSCTL_DESCR("System sleep state"), 1508 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1509 CTL_CREATE, CTL_EOL); 1510 } 1511 1512 err = sysctl_createv(clog, 0, &rnode, &rnode, 1513 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1514 "stat", SYSCTL_DESCR("ACPI statistics"), 1515 NULL, 0, NULL, 0, 1516 CTL_CREATE, CTL_EOL); 1517 1518 if (err != 0) 1519 return; 1520 1521 (void)sysctl_createv(clog, 0, &rnode, NULL, 1522 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1523 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1524 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1525 CTL_CREATE, CTL_EOL); 1526 1527 (void)sysctl_createv(clog, 0, &rnode, NULL, 1528 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1529 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1530 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1531 CTL_CREATE, CTL_EOL); 1532 1533 (void)sysctl_createv(clog, 0, &rnode, NULL, 1534 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1535 "fixed", SYSCTL_DESCR("Number of fixed events"), 1536 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1537 CTL_CREATE, CTL_EOL); 1538 1539 (void)sysctl_createv(clog, 0, &rnode, NULL, 1540 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1541 "method", SYSCTL_DESCR("Number of methods executed"), 1542 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1543 CTL_CREATE, CTL_EOL); 1544 1545 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1546 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1547 } 1548 1549 static int 1550 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1551 { 1552 struct sysctlnode node; 1553 uint64_t t; 1554 int err, i; 1555 1556 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1557 t += AcpiFixedEventCount[i]; 1558 1559 node = *rnode; 1560 node.sysctl_data = &t; 1561 1562 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1563 1564 if (err || newp == NULL) 1565 return err; 1566 1567 return 0; 1568 } 1569 1570 static int 1571 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1572 { 1573 struct acpi_softc *sc = acpi_softc; 1574 struct sysctlnode node; 1575 int err, t; 1576 1577 if (acpi_softc == NULL) 1578 return ENOSYS; 1579 1580 node = *rnode; 1581 t = sc->sc_sleepstate; 1582 node.sysctl_data = &t; 1583 1584 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1585 1586 if (err || newp == NULL) 1587 return err; 1588 1589 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1590 return EINVAL; 1591 1592 acpi_enter_sleep_state(t); 1593 1594 return 0; 1595 } 1596 1597 static int 1598 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1599 { 1600 struct acpi_softc *sc = acpi_softc; 1601 struct sysctlnode node; 1602 char t[3 * 6 + 1]; 1603 int err; 1604 1605 if (acpi_softc == NULL) 1606 return ENOSYS; 1607 1608 (void)memset(t, '\0', sizeof(t)); 1609 1610 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1611 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1612 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1613 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1614 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1615 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1616 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1617 1618 node = *rnode; 1619 node.sysctl_data = &t; 1620 1621 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1622 1623 if (err || newp == NULL) 1624 return err; 1625 1626 return 0; 1627 } 1628 1629 /* 1630 * Tables. 1631 */ 1632 ACPI_PHYSICAL_ADDRESS 1633 acpi_OsGetRootPointer(void) 1634 { 1635 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1636 1637 /* 1638 * We let MD code handle this since there are multiple ways to do it: 1639 * 1640 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1641 * 1642 * IA-64: Use the EFI. 1643 */ 1644 PhysicalAddress = acpi_md_OsGetRootPointer(); 1645 1646 if (acpi_root_pointer == 0) 1647 acpi_root_pointer = PhysicalAddress; 1648 1649 return PhysicalAddress; 1650 } 1651 1652 static ACPI_TABLE_HEADER * 1653 acpi_map_rsdt(void) 1654 { 1655 ACPI_PHYSICAL_ADDRESS paddr; 1656 ACPI_TABLE_RSDP *rsdp; 1657 1658 paddr = AcpiOsGetRootPointer(); 1659 1660 if (paddr == 0) 1661 return NULL; 1662 1663 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1664 1665 if (rsdp == NULL) 1666 return NULL; 1667 1668 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1669 paddr = rsdp->XsdtPhysicalAddress; 1670 else 1671 paddr = rsdp->RsdtPhysicalAddress; 1672 1673 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1674 1675 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1676 } 1677 1678 /* 1679 * XXX: Refactor to be a generic function that unmaps tables. 1680 */ 1681 static void 1682 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1683 { 1684 1685 if (rsdt == NULL) 1686 return; 1687 1688 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1689 } 1690 1691 /* 1692 * XXX: Refactor to be a generic function that maps tables. 1693 */ 1694 ACPI_STATUS 1695 acpi_madt_map(void) 1696 { 1697 ACPI_STATUS rv; 1698 1699 if (madt_header != NULL) 1700 return AE_ALREADY_EXISTS; 1701 1702 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); 1703 1704 if (ACPI_FAILURE(rv)) 1705 return rv; 1706 1707 return AE_OK; 1708 } 1709 1710 void 1711 acpi_madt_unmap(void) 1712 { 1713 madt_header = NULL; 1714 } 1715 1716 /* 1717 * XXX: Refactor to be a generic function that walks tables. 1718 */ 1719 void 1720 acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) 1721 { 1722 ACPI_SUBTABLE_HEADER *hdrp; 1723 char *madtend, *where; 1724 1725 madtend = (char *)madt_header + madt_header->Length; 1726 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); 1727 1728 while (where < madtend) { 1729 1730 hdrp = (ACPI_SUBTABLE_HEADER *)where; 1731 1732 if (ACPI_FAILURE(func(hdrp, aux))) 1733 break; 1734 1735 where += hdrp->Length; 1736 } 1737 } 1738 1739 /* 1740 * Miscellaneous. 1741 */ 1742 static bool 1743 acpi_is_scope(struct acpi_devnode *ad) 1744 { 1745 int i; 1746 1747 /* 1748 * Return true if the node is a root scope. 1749 */ 1750 if (ad->ad_parent == NULL) 1751 return false; 1752 1753 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1754 return false; 1755 1756 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1757 1758 if (acpi_scopes[i] == NULL) 1759 continue; 1760 1761 if (ad->ad_handle == acpi_scopes[i]) 1762 return true; 1763 } 1764 1765 return false; 1766 } 1767 1768 /* 1769 * ACPIVERBOSE. 1770 */ 1771 void 1772 acpi_load_verbose(void) 1773 { 1774 1775 if (acpi_verbose_loaded == 0) 1776 module_autoload("acpiverbose", MODULE_CLASS_MISC); 1777 } 1778 1779 void 1780 acpi_print_verbose_stub(struct acpi_softc *sc) 1781 { 1782 1783 acpi_load_verbose(); 1784 1785 if (acpi_verbose_loaded != 0) 1786 acpi_print_verbose(sc); 1787 } 1788 1789 void 1790 acpi_print_dev_stub(const char *pnpstr) 1791 { 1792 1793 acpi_load_verbose(); 1794 1795 if (acpi_verbose_loaded != 0) 1796 acpi_print_dev(pnpstr); 1797 } 1798 1799 MALLOC_DECLARE(M_ACPI); /* XXX: ACPI_ACTIVATE_DEV should use kmem(9). */ 1800 1801 /* 1802 * ACPI_ACTIVATE_DEV. 1803 */ 1804 static void 1805 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 1806 { 1807 1808 #ifndef ACPI_ACTIVATE_DEV 1809 return; 1810 } 1811 #else 1812 static const int valid = ACPI_VALID_STA | ACPI_VALID_HID; 1813 ACPI_DEVICE_INFO *newdi; 1814 ACPI_STATUS rv; 1815 uint32_t old; 1816 1817 /* 1818 * If the device is valid and present, 1819 * but not enabled, try to activate it. 1820 */ 1821 if (((*di)->Valid & valid) != valid) 1822 return; 1823 1824 old = (*di)->CurrentStatus; 1825 1826 if ((old & (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED)) != 1827 ACPI_STA_DEVICE_PRESENT) 1828 return; 1829 1830 rv = acpi_allocate_resources(handle); 1831 1832 if (ACPI_FAILURE(rv)) 1833 goto fail; 1834 1835 rv = AcpiGetObjectInfo(handle, &newdi); 1836 1837 if (ACPI_FAILURE(rv)) 1838 goto fail; 1839 1840 ACPI_FREE(*di); 1841 *di = newdi; 1842 1843 aprint_verbose_dev(acpi_softc->sc_dev, 1844 "%s activated, STA 0x%08X -> STA 0x%08X\n", 1845 (*di)->HardwareId.String, old, (*di)->CurrentStatus); 1846 1847 return; 1848 1849 fail: 1850 aprint_error_dev(acpi_softc->sc_dev, "failed to " 1851 "activate %s\n", (*di)->HardwareId.String); 1852 } 1853 1854 /* 1855 * XXX: This very incomplete. 1856 */ 1857 ACPI_STATUS 1858 acpi_allocate_resources(ACPI_HANDLE handle) 1859 { 1860 ACPI_BUFFER bufp, bufc, bufn; 1861 ACPI_RESOURCE *resp, *resc, *resn; 1862 ACPI_RESOURCE_IRQ *irq; 1863 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 1864 ACPI_STATUS rv; 1865 uint delta; 1866 1867 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 1868 if (ACPI_FAILURE(rv)) 1869 goto out; 1870 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 1871 if (ACPI_FAILURE(rv)) { 1872 goto out1; 1873 } 1874 1875 bufn.Length = 1000; 1876 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 1877 resp = bufp.Pointer; 1878 resc = bufc.Pointer; 1879 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 1880 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1881 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 1882 resp = ACPI_NEXT_RESOURCE(resp); 1883 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 1884 break; 1885 /* Found identical Id */ 1886 resn->Type = resc->Type; 1887 switch (resc->Type) { 1888 case ACPI_RESOURCE_TYPE_IRQ: 1889 memcpy(&resn->Data, &resp->Data, 1890 sizeof(ACPI_RESOURCE_IRQ)); 1891 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 1892 irq->Interrupts[0] = 1893 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 1894 Interrupts[irq->InterruptCount-1]; 1895 irq->InterruptCount = 1; 1896 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 1897 break; 1898 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 1899 memcpy(&resn->Data, &resp->Data, 1900 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 1901 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 1902 #if 0 1903 /* 1904 * XXX: Not duplicating the interrupt logic above 1905 * because its not clear what it accomplishes. 1906 */ 1907 xirq->Interrupts[0] = 1908 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 1909 Interrupts[irq->NumberOfInterrupts-1]; 1910 xirq->NumberOfInterrupts = 1; 1911 #endif 1912 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 1913 break; 1914 case ACPI_RESOURCE_TYPE_IO: 1915 memcpy(&resn->Data, &resp->Data, 1916 sizeof(ACPI_RESOURCE_IO)); 1917 resn->Length = resp->Length; 1918 break; 1919 default: 1920 aprint_error_dev(acpi_softc->sc_dev, 1921 "%s: invalid type %u\n", __func__, resc->Type); 1922 rv = AE_BAD_DATA; 1923 goto out2; 1924 } 1925 resc = ACPI_NEXT_RESOURCE(resc); 1926 resn = ACPI_NEXT_RESOURCE(resn); 1927 resp = ACPI_NEXT_RESOURCE(resp); 1928 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 1929 if (delta >= 1930 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 1931 bufn.Length *= 2; 1932 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 1933 M_ACPI, M_WAITOK); 1934 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 1935 delta); 1936 } 1937 } 1938 1939 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1940 aprint_error_dev(acpi_softc->sc_dev, 1941 "%s: resc not exhausted\n", __func__); 1942 rv = AE_BAD_DATA; 1943 goto out3; 1944 } 1945 1946 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 1947 rv = AcpiSetCurrentResources(handle, &bufn); 1948 1949 if (ACPI_FAILURE(rv)) 1950 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 1951 "resources: %s\n", __func__, AcpiFormatException(rv)); 1952 1953 out3: 1954 free(bufn.Pointer, M_ACPI); 1955 out2: 1956 ACPI_FREE(bufc.Pointer); 1957 out1: 1958 ACPI_FREE(bufp.Pointer); 1959 out: 1960 return rv; 1961 } 1962 1963 #endif /* ACPI_ACTIVATE_DEV */ 1964