1 /* $NetBSD: acpi.c,v 1.269 2018/04/07 15:49:52 christos 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 1.269 2018/04/07 15:49:52 christos Exp $"); 104 105 #include "pci.h" 106 #include "opt_acpi.h" 107 #include "opt_pcifixup.h" 108 109 #include <sys/param.h> 110 #include <sys/device.h> 111 #include <sys/kernel.h> 112 #include <sys/kmem.h> 113 #include <sys/malloc.h> 114 #include <sys/module.h> 115 #include <sys/mutex.h> 116 #include <sys/sysctl.h> 117 #include <sys/systm.h> 118 #include <sys/timetc.h> 119 120 #include <dev/acpi/acpireg.h> 121 #include <dev/acpi/acpivar.h> 122 #include <dev/acpi/acpi_mcfg.h> 123 #include <dev/acpi/acpi_osd.h> 124 #include <dev/acpi/acpi_pci.h> 125 #include <dev/acpi/acpi_power.h> 126 #include <dev/acpi/acpi_timer.h> 127 #include <dev/acpi/acpi_wakedev.h> 128 129 #include <machine/acpi_machdep.h> 130 131 #include "ioconf.h" 132 133 #define _COMPONENT ACPI_BUS_COMPONENT 134 ACPI_MODULE_NAME ("acpi") 135 136 /* 137 * The acpi_active variable is set when the ACPI subsystem is active. 138 * Machine-dependent code may wish to skip other steps (such as attaching 139 * subsystems that ACPI supercedes) when ACPI is active. 140 */ 141 int acpi_active = 0; 142 int acpi_suspended = 0; 143 int acpi_force_load = 0; 144 int acpi_verbose_loaded = 0; 145 146 struct acpi_softc *acpi_softc = NULL; 147 static uint64_t acpi_root_pointer; 148 extern kmutex_t acpi_interrupt_list_mtx; 149 static ACPI_HANDLE acpi_scopes[4]; 150 ACPI_TABLE_HEADER *madt_header; 151 152 /* 153 * This structure provides a context for the ACPI 154 * namespace walk performed in acpi_build_tree(). 155 */ 156 struct acpi_walkcontext { 157 struct acpi_softc *aw_sc; 158 struct acpi_devnode *aw_parent; 159 }; 160 161 /* 162 * Ignored HIDs. 163 */ 164 static const char * const acpi_ignored_ids[] = { 165 #if defined(i386) || defined(x86_64) 166 "ACPI0007", /* ACPI CPUs do not attach to acpi(4) */ 167 "PNP0000", /* AT interrupt controller is handled internally */ 168 "PNP0200", /* AT DMA controller is handled internally */ 169 "PNP0A??", /* PCI Busses are handled internally */ 170 "PNP0B00", /* AT RTC is handled internally */ 171 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 172 #endif 173 #if defined(x86_64) 174 "PNP0C04", /* FPU is handled internally */ 175 #endif 176 NULL 177 }; 178 179 /* 180 * Devices that should be attached early. 181 */ 182 static const char * const acpi_early_ids[] = { 183 "PNP0C09", /* acpiec(4) */ 184 NULL 185 }; 186 187 static int acpi_match(device_t, cfdata_t, void *); 188 static int acpi_submatch(device_t, cfdata_t, const int *, void *); 189 static void acpi_attach(device_t, device_t, void *); 190 static int acpi_detach(device_t, int); 191 static void acpi_childdet(device_t, device_t); 192 static bool acpi_suspend(device_t, const pmf_qual_t *); 193 static bool acpi_resume(device_t, const pmf_qual_t *); 194 195 static void acpi_build_tree(struct acpi_softc *); 196 static void acpi_config_tree(struct acpi_softc *); 197 static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, 198 void *, void **); 199 static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t, 200 void *, void **); 201 static void acpi_make_name(struct acpi_devnode *, uint32_t); 202 203 static int acpi_rescan(device_t, const char *, const int *); 204 static void acpi_rescan_early(struct acpi_softc *); 205 static void acpi_rescan_nodes(struct acpi_softc *); 206 static void acpi_rescan_capabilities(device_t); 207 static int acpi_print(void *aux, const char *); 208 209 static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); 210 211 static void acpi_register_fixed_button(struct acpi_softc *, int); 212 static void acpi_deregister_fixed_button(struct acpi_softc *, int); 213 static uint32_t acpi_fixed_button_handler(void *); 214 static void acpi_fixed_button_pressed(void *); 215 216 static void acpi_sleep_init(struct acpi_softc *); 217 218 static int sysctl_hw_acpi_fixedstats(SYSCTLFN_PROTO); 219 static int sysctl_hw_acpi_sleepstate(SYSCTLFN_PROTO); 220 static int sysctl_hw_acpi_sleepstates(SYSCTLFN_PROTO); 221 222 static bool acpi_is_scope(struct acpi_devnode *); 223 static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 224 static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 225 226 void acpi_print_verbose_stub(struct acpi_softc *); 227 void acpi_print_dev_stub(const char *); 228 229 static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **); 230 ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE); 231 232 void (*acpi_print_verbose)(struct acpi_softc *) = acpi_print_verbose_stub; 233 void (*acpi_print_dev)(const char *) = acpi_print_dev_stub; 234 235 CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 236 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 237 238 /* 239 * Probe for ACPI support. 240 * 241 * This is called by the machine-dependent ACPI front-end. 242 * Note: this is not an autoconfiguration interface function. 243 */ 244 int 245 acpi_probe(void) 246 { 247 ACPI_TABLE_HEADER *rsdt; 248 ACPI_STATUS rv; 249 int quirks; 250 251 if (acpi_softc != NULL) 252 panic("%s: already probed", __func__); 253 254 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 255 256 /* 257 * Start up ACPICA. 258 */ 259 AcpiGbl_EnableInterpreterSlack = true; 260 261 rv = AcpiInitializeSubsystem(); 262 263 if (ACPI_FAILURE(rv)) { 264 aprint_error("%s: failed to initialize subsystem\n", __func__); 265 return 0; 266 } 267 268 /* 269 * Allocate space for RSDT/XSDT and DSDT, 270 * but allow resizing if more tables exist. 271 */ 272 rv = AcpiInitializeTables(NULL, 2, true); 273 274 if (ACPI_FAILURE(rv)) { 275 aprint_error("%s: failed to initialize tables\n", __func__); 276 goto fail; 277 } 278 279 rv = AcpiLoadTables(); 280 281 if (ACPI_FAILURE(rv)) { 282 aprint_error("%s: failed to load tables\n", __func__); 283 goto fail; 284 } 285 286 rsdt = acpi_map_rsdt(); 287 288 if (rsdt == NULL) { 289 aprint_error("%s: failed to map RSDT\n", __func__); 290 goto fail; 291 } 292 293 quirks = acpi_find_quirks(); 294 295 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_BROKEN) != 0) { 296 297 aprint_normal("ACPI: BIOS is listed as broken:\n"); 298 aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 299 "AslId <%4.4s,%08x>\n", rsdt->OemId, rsdt->OemTableId, 300 rsdt->OemRevision, rsdt->AslCompilerId, 301 rsdt->AslCompilerRevision); 302 aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n"); 303 304 acpi_unmap_rsdt(rsdt); 305 goto fail; 306 } 307 308 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_OLDBIOS) != 0) { 309 310 aprint_normal("ACPI: BIOS is too old (%s). " 311 "Set acpi_force_load to use.\n", 312 pmf_get_platform("bios-date")); 313 314 acpi_unmap_rsdt(rsdt); 315 goto fail; 316 } 317 318 acpi_unmap_rsdt(rsdt); 319 320 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 321 322 if (ACPI_FAILURE(rv)) { 323 aprint_error("%s: failed to enable subsystem\n", __func__); 324 goto fail; 325 } 326 327 return 1; 328 329 fail: 330 (void)AcpiTerminate(); 331 332 return 0; 333 } 334 335 void 336 acpi_disable(void) 337 { 338 339 if (acpi_softc == NULL) 340 return; 341 342 KASSERT(acpi_active != 0); 343 344 if (AcpiGbl_FADT.SmiCommand != 0) 345 AcpiDisable(); 346 } 347 348 int 349 acpi_check(device_t parent, const char *ifattr) 350 { 351 return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); 352 } 353 354 int 355 acpi_reset(void) 356 { 357 struct acpi_softc *sc = acpi_softc; 358 ACPI_GENERIC_ADDRESS *ResetReg; 359 ACPI_PCI_ID PciId; 360 ACPI_STATUS status; 361 362 if (sc == NULL) 363 return ENXIO; 364 365 ResetReg = &AcpiGbl_FADT.ResetRegister; 366 367 /* Check if the reset register is supported */ 368 if (!(AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) || 369 !ResetReg->Address) { 370 return ENOENT; 371 } 372 373 switch (ResetReg->SpaceId) { 374 case ACPI_ADR_SPACE_PCI_CONFIG: 375 PciId.Segment = PciId.Bus = 0; 376 PciId.Device = ACPI_GAS_PCI_DEV(ResetReg->Address); 377 PciId.Function = ACPI_GAS_PCI_FUNC(ResetReg->Address); 378 status = AcpiOsWritePciConfiguration(&PciId, 379 ACPI_GAS_PCI_REGOFF(ResetReg->Address), 380 AcpiGbl_FADT.ResetValue, ResetReg->BitWidth); 381 break; 382 case ACPI_ADR_SPACE_SYSTEM_IO: 383 case ACPI_ADR_SPACE_SYSTEM_MEMORY: 384 status = AcpiReset(); 385 break; 386 default: 387 status = AE_TYPE; 388 break; 389 } 390 391 return ACPI_FAILURE(status) ? EIO : 0; 392 } 393 394 /* 395 * Autoconfiguration. 396 */ 397 static int 398 acpi_match(device_t parent, cfdata_t match, void *aux) 399 { 400 /* 401 * XXX: Nada; MD code has called acpi_probe(). 402 */ 403 return 1; 404 } 405 406 static int 407 acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 408 { 409 struct cfattach *ca; 410 411 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 412 413 return (ca == &acpi_ca); 414 } 415 416 static void 417 acpi_attach(device_t parent, device_t self, void *aux) 418 { 419 struct acpi_softc *sc = device_private(self); 420 struct acpibus_attach_args *aa = aux; 421 ACPI_TABLE_HEADER *rsdt; 422 ACPI_STATUS rv; 423 424 aprint_naive("\n"); 425 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 426 427 if (acpi_softc != NULL) 428 panic("%s: already attached", __func__); 429 430 rsdt = acpi_map_rsdt(); 431 432 if (rsdt == NULL) 433 aprint_error_dev(self, "X/RSDT: Not found\n"); 434 else { 435 aprint_verbose_dev(self, 436 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 437 rsdt->OemId, rsdt->OemTableId, 438 rsdt->OemRevision, 439 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 440 } 441 442 acpi_unmap_rsdt(rsdt); 443 444 sc->sc_dev = self; 445 sc->sc_root = NULL; 446 447 sc->sc_sleepstate = ACPI_STATE_S0; 448 sc->sc_quirks = acpi_find_quirks(); 449 450 sysmon_power_settype("acpi"); 451 452 sc->sc_iot = aa->aa_iot; 453 sc->sc_memt = aa->aa_memt; 454 sc->sc_pc = aa->aa_pc; 455 sc->sc_pciflags = aa->aa_pciflags; 456 sc->sc_ic = aa->aa_ic; 457 sc->sc_dmat = aa->aa_dmat; 458 sc->sc_dmat64 = aa->aa_dmat64; 459 460 SIMPLEQ_INIT(&sc->ad_head); 461 462 acpi_softc = sc; 463 464 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) 465 aprint_error_dev(self, "couldn't establish power handler\n"); 466 467 /* 468 * Bring ACPICA on-line. 469 */ 470 471 rv = AcpiEnableSubsystem(ACPI_FULL_INITIALIZATION); 472 473 if (ACPI_FAILURE(rv)) 474 goto fail; 475 476 /* 477 * Early initialization of acpiec(4) via ECDT. 478 */ 479 (void)config_found_ia(self, "acpiecdtbus", aa, NULL); 480 481 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 482 483 if (ACPI_FAILURE(rv)) 484 goto fail; 485 486 /* 487 * Scan the namespace and build our device tree. 488 */ 489 acpi_build_tree(sc); 490 491 #if NPCI > 0 492 /* 493 * Probe MCFG table 494 */ 495 acpimcfg_probe(sc); 496 #endif 497 498 acpi_md_callback(sc); 499 500 /* 501 * Early initialization of the _PDC control method 502 * that may load additional SSDT tables dynamically. 503 */ 504 (void)acpi_md_pdc(); 505 506 /* 507 * Install global notify handlers. 508 */ 509 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 510 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 511 512 if (ACPI_FAILURE(rv)) 513 goto fail; 514 515 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 516 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 517 518 if (ACPI_FAILURE(rv)) 519 goto fail; 520 521 acpi_active = 1; 522 523 /* Show SCI interrupt. */ 524 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 525 AcpiGbl_FADT.SciInterrupt); 526 527 /* 528 * Install fixed-event handlers. 529 */ 530 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 531 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 532 533 acpitimer_init(sc); 534 acpi_config_tree(sc); 535 acpi_sleep_init(sc); 536 537 #ifdef ACPI_DEBUG 538 acpi_debug_init(); 539 #endif 540 541 /* 542 * Print debug information. 543 */ 544 acpi_print_verbose(sc); 545 546 return; 547 548 fail: 549 aprint_error("%s: failed to initialize ACPI: %s\n", 550 __func__, AcpiFormatException(rv)); 551 } 552 553 /* 554 * XXX: This is incomplete. 555 */ 556 static int 557 acpi_detach(device_t self, int flags) 558 { 559 struct acpi_softc *sc = device_private(self); 560 ACPI_STATUS rv; 561 int rc; 562 563 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 564 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 565 566 if (ACPI_FAILURE(rv)) 567 return EBUSY; 568 569 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 570 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 571 572 if (ACPI_FAILURE(rv)) 573 return EBUSY; 574 575 if ((rc = config_detach_children(self, flags)) != 0) 576 return rc; 577 578 if ((rc = acpitimer_detach()) != 0) 579 return rc; 580 581 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 582 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 583 584 pmf_device_deregister(self); 585 586 acpi_softc = NULL; 587 588 return 0; 589 } 590 591 static void 592 acpi_childdet(device_t self, device_t child) 593 { 594 struct acpi_softc *sc = device_private(self); 595 struct acpi_devnode *ad; 596 597 if (sc->sc_apmbus == child) 598 sc->sc_apmbus = NULL; 599 600 if (sc->sc_hpet == child) 601 sc->sc_hpet = NULL; 602 603 if (sc->sc_wdrt == child) 604 sc->sc_wdrt = NULL; 605 606 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 607 608 if (ad->ad_device == child) 609 ad->ad_device = NULL; 610 } 611 } 612 613 static bool 614 acpi_suspend(device_t dv, const pmf_qual_t *qual) 615 { 616 617 acpi_suspended = 1; 618 619 return true; 620 } 621 622 static bool 623 acpi_resume(device_t dv, const pmf_qual_t *qual) 624 { 625 626 acpi_suspended = 0; 627 628 return true; 629 } 630 631 /* 632 * Namespace scan. 633 */ 634 static void 635 acpi_build_tree(struct acpi_softc *sc) 636 { 637 struct acpi_walkcontext awc; 638 639 /* 640 * Get the root scope handles. 641 */ 642 KASSERT(__arraycount(acpi_scopes) == 4); 643 644 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 645 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 646 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 647 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 648 649 /* 650 * Make the root node. 651 */ 652 awc.aw_sc = sc; 653 awc.aw_parent = NULL; 654 655 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 656 657 KASSERT(sc->sc_root == NULL); 658 KASSERT(awc.aw_parent != NULL); 659 660 sc->sc_root = awc.aw_parent; 661 662 /* 663 * Build the internal namespace. 664 */ 665 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 666 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 667 668 /* 669 * Scan the internal namespace. 670 */ 671 (void)acpi_pcidev_scan(sc->sc_root); 672 } 673 674 static void 675 acpi_config_tree(struct acpi_softc *sc) 676 { 677 678 /* 679 * Configure all everything found "at acpi?". 680 */ 681 (void)acpi_rescan(sc->sc_dev, NULL, NULL); 682 683 /* 684 * Update GPE information. 685 * 686 * Note that this must be called after 687 * all GPE handlers have been installed. 688 */ 689 (void)AcpiUpdateAllGpes(); 690 691 /* 692 * Defer rest of the configuration. 693 */ 694 (void)config_defer(sc->sc_dev, acpi_rescan_capabilities); 695 } 696 697 static ACPI_STATUS 698 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 699 void *context, void **status) 700 { 701 struct acpi_walkcontext *awc = context; 702 struct acpi_softc *sc = awc->aw_sc; 703 struct acpi_devnode *ad; 704 ACPI_DEVICE_INFO *devinfo; 705 ACPI_OBJECT_TYPE type; 706 ACPI_STATUS rv; 707 708 rv = AcpiGetObjectInfo(handle, &devinfo); 709 710 if (ACPI_FAILURE(rv)) 711 return AE_OK; /* Do not terminate the walk. */ 712 713 type = devinfo->Type; 714 715 switch (type) { 716 717 case ACPI_TYPE_DEVICE: 718 acpi_activate_device(handle, &devinfo); 719 /* FALLTHROUGH */ 720 721 case ACPI_TYPE_PROCESSOR: 722 case ACPI_TYPE_THERMAL: 723 case ACPI_TYPE_POWER: 724 725 ad = kmem_zalloc(sizeof(*ad), KM_SLEEP); 726 727 ad->ad_device = NULL; 728 ad->ad_notify = NULL; 729 ad->ad_pciinfo = NULL; 730 ad->ad_wakedev = NULL; 731 732 ad->ad_type = type; 733 ad->ad_handle = handle; 734 ad->ad_devinfo = devinfo; 735 736 ad->ad_root = sc->sc_dev; 737 ad->ad_parent = awc->aw_parent; 738 739 acpi_match_node_init(ad); 740 acpi_make_name(ad, devinfo->Name); 741 742 /* 743 * Identify wake GPEs from the _PRW. Note that 744 * AcpiUpdateAllGpes() must be called afterwards. 745 */ 746 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) 747 acpi_wakedev_init(ad); 748 749 SIMPLEQ_INIT(&ad->ad_child_head); 750 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 751 752 if (ad->ad_parent != NULL) { 753 754 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 755 ad, ad_child_list); 756 } 757 758 awc->aw_parent = ad; 759 } 760 761 return AE_OK; 762 } 763 764 static ACPI_STATUS 765 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 766 void *context, void **status) 767 { 768 struct acpi_walkcontext *awc = context; 769 770 KASSERT(awc != NULL); 771 KASSERT(awc->aw_parent != NULL); 772 773 if (handle == awc->aw_parent->ad_handle) 774 awc->aw_parent = awc->aw_parent->ad_parent; 775 776 return AE_OK; 777 } 778 779 static void 780 acpi_make_name(struct acpi_devnode *ad, uint32_t name) 781 { 782 ACPI_NAME_UNION *anu; 783 int clear, i; 784 785 anu = (ACPI_NAME_UNION *)&name; 786 ad->ad_name[4] = '\0'; 787 788 for (i = 3, clear = 0; i >= 0; i--) { 789 790 if (clear == 0 && anu->Ascii[i] == '_') 791 ad->ad_name[i] = '\0'; 792 else { 793 ad->ad_name[i] = anu->Ascii[i]; 794 clear = 1; 795 } 796 } 797 798 if (ad->ad_name[0] == '\0') 799 ad->ad_name[0] = '_'; 800 } 801 802 /* 803 * Device attachment. 804 */ 805 static int 806 acpi_rescan(device_t self, const char *ifattr, const int *locators) 807 { 808 struct acpi_softc *sc = device_private(self); 809 struct acpi_attach_args aa; 810 811 /* 812 * Try to attach hpet(4) first via a specific table. 813 */ 814 aa.aa_memt = sc->sc_memt; 815 816 if (ifattr_match(ifattr, "acpihpetbus") && sc->sc_hpet == NULL) 817 sc->sc_hpet = config_found_ia(sc->sc_dev, 818 "acpihpetbus", &aa, NULL); 819 820 /* 821 * A two-pass scan for acpinodebus. 822 */ 823 if (ifattr_match(ifattr, "acpinodebus")) { 824 acpi_rescan_early(sc); 825 acpi_rescan_nodes(sc); 826 } 827 828 /* 829 * Attach APM emulation and acpiwdrt(4). 830 */ 831 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 832 sc->sc_apmbus = config_found_ia(sc->sc_dev, 833 "acpiapmbus", NULL, NULL); 834 835 if (ifattr_match(ifattr, "acpiwdrtbus") && sc->sc_wdrt == NULL) 836 sc->sc_wdrt = config_found_ia(sc->sc_dev, 837 "acpiwdrtbus", NULL, NULL); 838 839 return 0; 840 } 841 842 static void 843 acpi_rescan_early(struct acpi_softc *sc) 844 { 845 struct acpi_attach_args aa; 846 struct acpi_devnode *ad; 847 848 /* 849 * First scan for devices such as acpiec(4) that 850 * should be always attached before anything else. 851 * We want these devices to attach regardless of 852 * the device status and other restrictions. 853 */ 854 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 855 856 if (ad->ad_device != NULL) 857 continue; 858 859 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 860 continue; 861 862 if (acpi_match_hid(ad->ad_devinfo, acpi_early_ids) == 0) 863 continue; 864 865 aa.aa_node = ad; 866 aa.aa_iot = sc->sc_iot; 867 aa.aa_memt = sc->sc_memt; 868 aa.aa_pc = sc->sc_pc; 869 aa.aa_pciflags = sc->sc_pciflags; 870 aa.aa_ic = sc->sc_ic; 871 aa.aa_dmat = sc->sc_dmat; 872 aa.aa_dmat64 = sc->sc_dmat64; 873 874 ad->ad_device = config_found_ia(sc->sc_dev, 875 "acpinodebus", &aa, acpi_print); 876 } 877 } 878 879 static void 880 acpi_rescan_nodes(struct acpi_softc *sc) 881 { 882 const char * const hpet_ids[] = { "PNP0103", NULL }; 883 struct acpi_attach_args aa; 884 struct acpi_devnode *ad; 885 ACPI_DEVICE_INFO *di; 886 887 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 888 889 if (ad->ad_device != NULL) 890 continue; 891 892 /* 893 * There is a bug in ACPICA: it defines the type 894 * of the scopes incorrectly for its own reasons. 895 */ 896 if (acpi_is_scope(ad) != false) 897 continue; 898 899 di = ad->ad_devinfo; 900 901 if (di->Type == ACPI_TYPE_POWER) 902 continue; 903 904 if (di->Type == ACPI_TYPE_PROCESSOR) 905 continue; 906 907 if (acpi_match_hid(di, acpi_early_ids) != 0) 908 continue; 909 910 if (acpi_match_hid(di, acpi_ignored_ids) != 0) 911 continue; 912 913 if (acpi_match_hid(di, hpet_ids) != 0 && sc->sc_hpet != NULL) 914 continue; 915 916 aa.aa_node = ad; 917 aa.aa_iot = sc->sc_iot; 918 aa.aa_memt = sc->sc_memt; 919 aa.aa_pc = sc->sc_pc; 920 aa.aa_pciflags = sc->sc_pciflags; 921 aa.aa_ic = sc->sc_ic; 922 aa.aa_dmat = sc->sc_dmat; 923 aa.aa_dmat64 = sc->sc_dmat64; 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 1299 if (acpi_softc == NULL) 1300 return; 1301 1302 if (state == sc->sc_sleepstate) 1303 return; 1304 1305 if (state < ACPI_STATE_S0 || state > ACPI_STATE_S5) 1306 return; 1307 1308 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1309 1310 switch (state) { 1311 1312 case ACPI_STATE_S0: 1313 sc->sc_sleepstate = ACPI_STATE_S0; 1314 return; 1315 1316 case ACPI_STATE_S1: 1317 case ACPI_STATE_S2: 1318 case ACPI_STATE_S3: 1319 case ACPI_STATE_S4: 1320 1321 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1322 aprint_error_dev(sc->sc_dev, "sleep state " 1323 "S%d is not available\n", state); 1324 return; 1325 } 1326 1327 /* 1328 * Evaluate the _TTS method. This should be done before 1329 * pmf_system_suspend(9) and the evaluation of _PTS. 1330 * We should also re-evaluate this once we return to 1331 * S0 or if we abort the sleep state transition in the 1332 * middle (see ACPI 3.0, section 7.3.6). In reality, 1333 * however, the _TTS method is seldom seen in the field. 1334 */ 1335 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1336 1337 if (ACPI_SUCCESS(rv)) 1338 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1339 1340 if (state != ACPI_STATE_S1 && 1341 pmf_system_suspend(PMF_Q_NONE) != true) { 1342 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1343 break; 1344 } 1345 1346 /* 1347 * This will evaluate the _PTS and _SST methods, 1348 * but unlike the documentation claims, not _GTS, 1349 * which is evaluated in AcpiEnterSleepState(). 1350 * This must be called with interrupts enabled. 1351 */ 1352 rv = AcpiEnterSleepStatePrep(state); 1353 1354 if (ACPI_FAILURE(rv)) { 1355 aprint_error_dev(sc->sc_dev, "failed to prepare " 1356 "S%d: %s\n", state, AcpiFormatException(rv)); 1357 break; 1358 } 1359 1360 /* 1361 * After the _PTS method has been evaluated, we can 1362 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1363 */ 1364 acpi_wakedev_commit(sc, state); 1365 1366 sc->sc_sleepstate = state; 1367 1368 if (state == ACPI_STATE_S1) { 1369 1370 /* 1371 * Before the transition to S1, CPU caches 1372 * must be flushed (see ACPI 4.0, 7.3.4.2). 1373 * 1374 * Note that interrupts must be off before 1375 * calling AcpiEnterSleepState(). Conversely, 1376 * AcpiLeaveSleepState() should always be 1377 * called with interrupts enabled. 1378 */ 1379 acpi_md_OsDisableInterrupt(); 1380 1381 ACPI_FLUSH_CPU_CACHE(); 1382 rv = AcpiEnterSleepState(state); 1383 1384 if (ACPI_FAILURE(rv)) 1385 aprint_error_dev(sc->sc_dev, "failed to " 1386 "enter S1: %s\n", AcpiFormatException(rv)); 1387 1388 /* 1389 * Clear fixed events and disable all GPEs before 1390 * interrupts are enabled. 1391 */ 1392 AcpiClearEvent(ACPI_EVENT_PMTIMER); 1393 AcpiClearEvent(ACPI_EVENT_GLOBAL); 1394 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON); 1395 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON); 1396 AcpiClearEvent(ACPI_EVENT_RTC); 1397 AcpiHwDisableAllGpes(); 1398 1399 acpi_md_OsEnableInterrupt(); 1400 rv = AcpiLeaveSleepState(state); 1401 1402 } else { 1403 1404 (void)acpi_md_sleep(state); 1405 1406 if (state == ACPI_STATE_S4) 1407 AcpiEnable(); 1408 1409 (void)pmf_system_bus_resume(PMF_Q_NONE); 1410 (void)AcpiLeaveSleepState(state); 1411 (void)AcpiSetFirmwareWakingVector(0, 0); 1412 (void)pmf_system_resume(PMF_Q_NONE); 1413 } 1414 1415 /* 1416 * No wake GPEs should be enabled at runtime. 1417 */ 1418 acpi_wakedev_commit(sc, ACPI_STATE_S0); 1419 break; 1420 1421 case ACPI_STATE_S5: 1422 1423 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1424 1425 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1426 1427 if (ACPI_FAILURE(rv)) { 1428 aprint_error_dev(sc->sc_dev, "failed to prepare " 1429 "S%d: %s\n", state, AcpiFormatException(rv)); 1430 break; 1431 } 1432 1433 (void)AcpiDisableAllGpes(); 1434 1435 DELAY(1000000); 1436 1437 sc->sc_sleepstate = state; 1438 acpi_md_OsDisableInterrupt(); 1439 1440 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1441 1442 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1443 1444 break; 1445 } 1446 1447 sc->sc_sleepstate = ACPI_STATE_S0; 1448 1449 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1450 } 1451 1452 /* 1453 * Sysctl. 1454 */ 1455 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1456 { 1457 const struct sysctlnode *rnode, *snode; 1458 int err; 1459 1460 err = sysctl_createv(clog, 0, NULL, &rnode, 1461 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1462 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1463 NULL, 0, NULL, 0, 1464 CTL_HW, CTL_CREATE, CTL_EOL); 1465 1466 if (err != 0) 1467 return; 1468 1469 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1470 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1471 "root", SYSCTL_DESCR("ACPI root pointer"), 1472 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1473 CTL_CREATE, CTL_EOL); 1474 1475 err = sysctl_createv(clog, 0, &rnode, &snode, 1476 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1477 "sleep", SYSCTL_DESCR("ACPI sleep"), 1478 NULL, 0, NULL, 0, 1479 CTL_CREATE, CTL_EOL); 1480 1481 if (err != 0) 1482 return; 1483 1484 (void)sysctl_createv(NULL, 0, &snode, NULL, 1485 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1486 "state", SYSCTL_DESCR("System sleep state"), 1487 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1488 CTL_CREATE, CTL_EOL); 1489 1490 (void)sysctl_createv(NULL, 0, &snode, NULL, 1491 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1492 "states", SYSCTL_DESCR("Supported sleep states"), 1493 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1494 CTL_CREATE, CTL_EOL); 1495 1496 err = sysctl_createv(clog, 0, &rnode, &rnode, 1497 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1498 "stat", SYSCTL_DESCR("ACPI statistics"), 1499 NULL, 0, NULL, 0, 1500 CTL_CREATE, CTL_EOL); 1501 1502 if (err != 0) 1503 return; 1504 1505 (void)sysctl_createv(clog, 0, &rnode, NULL, 1506 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1507 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1508 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1509 CTL_CREATE, CTL_EOL); 1510 1511 (void)sysctl_createv(clog, 0, &rnode, NULL, 1512 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1513 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1514 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1515 CTL_CREATE, CTL_EOL); 1516 1517 (void)sysctl_createv(clog, 0, &rnode, NULL, 1518 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1519 "fixed", SYSCTL_DESCR("Number of fixed events"), 1520 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1521 CTL_CREATE, CTL_EOL); 1522 1523 (void)sysctl_createv(clog, 0, &rnode, NULL, 1524 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1525 "method", SYSCTL_DESCR("Number of methods executed"), 1526 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1527 CTL_CREATE, CTL_EOL); 1528 1529 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1530 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1531 } 1532 1533 static int 1534 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1535 { 1536 struct sysctlnode node; 1537 uint64_t t; 1538 int err, i; 1539 1540 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1541 t += AcpiFixedEventCount[i]; 1542 1543 node = *rnode; 1544 node.sysctl_data = &t; 1545 1546 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1547 1548 if (err || newp == NULL) 1549 return err; 1550 1551 return 0; 1552 } 1553 1554 static int 1555 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1556 { 1557 struct acpi_softc *sc = acpi_softc; 1558 struct sysctlnode node; 1559 int err, t; 1560 1561 if (acpi_softc == NULL) 1562 return ENOSYS; 1563 1564 node = *rnode; 1565 t = sc->sc_sleepstate; 1566 node.sysctl_data = &t; 1567 1568 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1569 1570 if (err || newp == NULL) 1571 return err; 1572 1573 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1574 return EINVAL; 1575 1576 acpi_enter_sleep_state(t); 1577 1578 return 0; 1579 } 1580 1581 static int 1582 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1583 { 1584 struct acpi_softc *sc = acpi_softc; 1585 struct sysctlnode node; 1586 char t[3 * 6 + 1]; 1587 int err; 1588 1589 if (acpi_softc == NULL) 1590 return ENOSYS; 1591 1592 (void)memset(t, '\0', sizeof(t)); 1593 1594 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1595 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1596 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1597 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1598 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1599 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1600 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1601 1602 node = *rnode; 1603 node.sysctl_data = &t; 1604 1605 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1606 1607 if (err || newp == NULL) 1608 return err; 1609 1610 return 0; 1611 } 1612 1613 /* 1614 * Tables. 1615 */ 1616 ACPI_PHYSICAL_ADDRESS 1617 acpi_OsGetRootPointer(void) 1618 { 1619 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1620 1621 /* 1622 * We let MD code handle this since there are multiple ways to do it: 1623 * 1624 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1625 * 1626 * IA-64: Use the EFI. 1627 */ 1628 PhysicalAddress = acpi_md_OsGetRootPointer(); 1629 1630 if (acpi_root_pointer == 0) 1631 acpi_root_pointer = PhysicalAddress; 1632 1633 return PhysicalAddress; 1634 } 1635 1636 static ACPI_TABLE_HEADER * 1637 acpi_map_rsdt(void) 1638 { 1639 ACPI_PHYSICAL_ADDRESS paddr; 1640 ACPI_TABLE_RSDP *rsdp; 1641 1642 paddr = AcpiOsGetRootPointer(); 1643 1644 if (paddr == 0) 1645 return NULL; 1646 1647 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1648 1649 if (rsdp == NULL) 1650 return NULL; 1651 1652 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1653 paddr = rsdp->XsdtPhysicalAddress; 1654 else 1655 paddr = rsdp->RsdtPhysicalAddress; 1656 1657 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1658 1659 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1660 } 1661 1662 /* 1663 * XXX: Refactor to be a generic function that unmaps tables. 1664 */ 1665 static void 1666 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1667 { 1668 1669 if (rsdt == NULL) 1670 return; 1671 1672 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1673 } 1674 1675 /* 1676 * XXX: Refactor to be a generic function that maps tables. 1677 */ 1678 ACPI_STATUS 1679 acpi_madt_map(void) 1680 { 1681 ACPI_STATUS rv; 1682 1683 if (madt_header != NULL) 1684 return AE_ALREADY_EXISTS; 1685 1686 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); 1687 1688 if (ACPI_FAILURE(rv)) 1689 return rv; 1690 1691 return AE_OK; 1692 } 1693 1694 void 1695 acpi_madt_unmap(void) 1696 { 1697 madt_header = NULL; 1698 } 1699 1700 /* 1701 * XXX: Refactor to be a generic function that walks tables. 1702 */ 1703 void 1704 acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) 1705 { 1706 ACPI_SUBTABLE_HEADER *hdrp; 1707 char *madtend, *where; 1708 1709 madtend = (char *)madt_header + madt_header->Length; 1710 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); 1711 1712 while (where < madtend) { 1713 1714 hdrp = (ACPI_SUBTABLE_HEADER *)where; 1715 1716 if (ACPI_FAILURE(func(hdrp, aux))) 1717 break; 1718 1719 where += hdrp->Length; 1720 } 1721 } 1722 1723 /* 1724 * Miscellaneous. 1725 */ 1726 static bool 1727 acpi_is_scope(struct acpi_devnode *ad) 1728 { 1729 int i; 1730 1731 /* 1732 * Return true if the node is a root scope. 1733 */ 1734 if (ad->ad_parent == NULL) 1735 return false; 1736 1737 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1738 return false; 1739 1740 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1741 1742 if (acpi_scopes[i] == NULL) 1743 continue; 1744 1745 if (ad->ad_handle == acpi_scopes[i]) 1746 return true; 1747 } 1748 1749 return false; 1750 } 1751 1752 /* 1753 * ACPIVERBOSE. 1754 */ 1755 void 1756 acpi_load_verbose(void) 1757 { 1758 1759 if (acpi_verbose_loaded == 0) 1760 module_autoload("acpiverbose", MODULE_CLASS_MISC); 1761 } 1762 1763 void 1764 acpi_print_verbose_stub(struct acpi_softc *sc) 1765 { 1766 1767 acpi_load_verbose(); 1768 1769 if (acpi_verbose_loaded != 0) 1770 acpi_print_verbose(sc); 1771 } 1772 1773 void 1774 acpi_print_dev_stub(const char *pnpstr) 1775 { 1776 1777 acpi_load_verbose(); 1778 1779 if (acpi_verbose_loaded != 0) 1780 acpi_print_dev(pnpstr); 1781 } 1782 1783 MALLOC_DECLARE(M_ACPI); /* XXX: ACPI_ACTIVATE_DEV should use kmem(9). */ 1784 1785 /* 1786 * ACPI_ACTIVATE_DEV. 1787 */ 1788 static void 1789 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 1790 { 1791 1792 #ifndef ACPI_ACTIVATE_DEV 1793 return; 1794 } 1795 #else 1796 static const int valid = ACPI_VALID_HID; 1797 ACPI_DEVICE_INFO *newdi; 1798 ACPI_STATUS rv; 1799 1800 /* 1801 * If the device is valid and present, 1802 * but not enabled, try to activate it. 1803 */ 1804 if (((*di)->Valid & valid) != valid) 1805 return; 1806 1807 rv = acpi_allocate_resources(handle); 1808 1809 if (ACPI_FAILURE(rv)) 1810 goto fail; 1811 1812 rv = AcpiGetObjectInfo(handle, &newdi); 1813 1814 if (ACPI_FAILURE(rv)) 1815 goto fail; 1816 1817 ACPI_FREE(*di); 1818 *di = newdi; 1819 1820 aprint_verbose_dev(acpi_softc->sc_dev, 1821 "%s activated\n", (*di)->HardwareId.String); 1822 1823 return; 1824 1825 fail: 1826 aprint_error_dev(acpi_softc->sc_dev, "failed to " 1827 "activate %s\n", (*di)->HardwareId.String); 1828 } 1829 1830 /* 1831 * XXX: This very incomplete. 1832 */ 1833 ACPI_STATUS 1834 acpi_allocate_resources(ACPI_HANDLE handle) 1835 { 1836 ACPI_BUFFER bufp, bufc, bufn; 1837 ACPI_RESOURCE *resp, *resc, *resn; 1838 ACPI_RESOURCE_IRQ *irq; 1839 #if 0 1840 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 1841 #endif 1842 ACPI_STATUS rv; 1843 uint delta; 1844 1845 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 1846 if (ACPI_FAILURE(rv)) 1847 goto out; 1848 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 1849 if (ACPI_FAILURE(rv)) { 1850 goto out1; 1851 } 1852 1853 bufn.Length = 1000; 1854 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 1855 resp = bufp.Pointer; 1856 resc = bufc.Pointer; 1857 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 1858 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1859 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 1860 resp = ACPI_NEXT_RESOURCE(resp); 1861 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 1862 break; 1863 /* Found identical Id */ 1864 resn->Type = resc->Type; 1865 switch (resc->Type) { 1866 case ACPI_RESOURCE_TYPE_IRQ: 1867 memcpy(&resn->Data, &resp->Data, 1868 sizeof(ACPI_RESOURCE_IRQ)); 1869 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 1870 irq->Interrupts[0] = 1871 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 1872 Interrupts[irq->InterruptCount-1]; 1873 irq->InterruptCount = 1; 1874 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 1875 break; 1876 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 1877 memcpy(&resn->Data, &resp->Data, 1878 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 1879 #if 0 1880 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 1881 /* 1882 * XXX: Not duplicating the interrupt logic above 1883 * because its not clear what it accomplishes. 1884 */ 1885 xirq->Interrupts[0] = 1886 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 1887 Interrupts[irq->NumberOfInterrupts-1]; 1888 xirq->NumberOfInterrupts = 1; 1889 #endif 1890 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 1891 break; 1892 case ACPI_RESOURCE_TYPE_IO: 1893 memcpy(&resn->Data, &resp->Data, 1894 sizeof(ACPI_RESOURCE_IO)); 1895 resn->Length = resp->Length; 1896 break; 1897 default: 1898 aprint_error_dev(acpi_softc->sc_dev, 1899 "%s: invalid type %u\n", __func__, resc->Type); 1900 rv = AE_BAD_DATA; 1901 goto out2; 1902 } 1903 resc = ACPI_NEXT_RESOURCE(resc); 1904 resn = ACPI_NEXT_RESOURCE(resn); 1905 resp = ACPI_NEXT_RESOURCE(resp); 1906 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 1907 if (delta >= 1908 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 1909 bufn.Length *= 2; 1910 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 1911 M_ACPI, M_WAITOK); 1912 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 1913 delta); 1914 } 1915 } 1916 1917 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1918 aprint_error_dev(acpi_softc->sc_dev, 1919 "%s: resc not exhausted\n", __func__); 1920 rv = AE_BAD_DATA; 1921 goto out3; 1922 } 1923 1924 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 1925 rv = AcpiSetCurrentResources(handle, &bufn); 1926 1927 if (ACPI_FAILURE(rv)) 1928 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 1929 "resources: %s\n", __func__, AcpiFormatException(rv)); 1930 1931 out3: 1932 free(bufn.Pointer, M_ACPI); 1933 out2: 1934 ACPI_FREE(bufc.Pointer); 1935 out1: 1936 ACPI_FREE(bufp.Pointer); 1937 out: 1938 return rv; 1939 } 1940 1941 #endif /* ACPI_ACTIVATE_DEV */ 1942