acpi.c revision 1.260
1 /* $NetBSD: acpi.c,v 1.260 2015/08/18 10:41:28 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 1.260 2015/08/18 10:41:28 christos Exp $"); 104 105 #include "opt_acpi.h" 106 #include "opt_pcifixup.h" 107 108 #include <sys/param.h> 109 #include <sys/device.h> 110 #include <sys/kernel.h> 111 #include <sys/kmem.h> 112 #include <sys/malloc.h> 113 #include <sys/module.h> 114 #include <sys/mutex.h> 115 #include <sys/sysctl.h> 116 #include <sys/systm.h> 117 #include <sys/timetc.h> 118 119 #include <dev/acpi/acpireg.h> 120 #include <dev/acpi/acpivar.h> 121 #include <dev/acpi/acpi_osd.h> 122 #include <dev/acpi/acpi_pci.h> 123 #include <dev/acpi/acpi_power.h> 124 #include <dev/acpi/acpi_timer.h> 125 #include <dev/acpi/acpi_wakedev.h> 126 127 #include <machine/acpi_machdep.h> 128 129 #define _COMPONENT ACPI_BUS_COMPONENT 130 ACPI_MODULE_NAME ("acpi") 131 132 /* 133 * The acpi_active variable is set when the ACPI subsystem is active. 134 * Machine-dependent code may wish to skip other steps (such as attaching 135 * subsystems that ACPI supercedes) when ACPI is active. 136 */ 137 int acpi_active = 0; 138 int acpi_suspended = 0; 139 int acpi_force_load = 0; 140 int acpi_verbose_loaded = 0; 141 142 struct acpi_softc *acpi_softc = NULL; 143 static uint64_t acpi_root_pointer; 144 extern kmutex_t acpi_interrupt_list_mtx; 145 extern struct cfdriver acpi_cd; 146 static ACPI_HANDLE acpi_scopes[4]; 147 ACPI_TABLE_HEADER *madt_header; 148 149 /* 150 * This structure provides a context for the ACPI 151 * namespace walk performed in acpi_build_tree(). 152 */ 153 struct acpi_walkcontext { 154 struct acpi_softc *aw_sc; 155 struct acpi_devnode *aw_parent; 156 }; 157 158 /* 159 * Ignored HIDs. 160 */ 161 static const char * const acpi_ignored_ids[] = { 162 #if defined(i386) || defined(x86_64) 163 "ACPI0007", /* ACPI CPUs do not attach to acpi(4) */ 164 "PNP0000", /* AT interrupt controller is handled internally */ 165 "PNP0200", /* AT DMA controller is handled internally */ 166 "PNP0A??", /* PCI Busses are handled internally */ 167 "PNP0B00", /* AT RTC is handled internally */ 168 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 169 #endif 170 #if defined(x86_64) 171 "PNP0C04", /* FPU is handled internally */ 172 #endif 173 NULL 174 }; 175 176 /* 177 * Devices that should be attached early. 178 */ 179 static const char * const acpi_early_ids[] = { 180 "PNP0C09", /* acpiec(4) */ 181 NULL 182 }; 183 184 static int acpi_match(device_t, cfdata_t, void *); 185 static int acpi_submatch(device_t, cfdata_t, const int *, void *); 186 static void acpi_attach(device_t, device_t, void *); 187 static int acpi_detach(device_t, int); 188 static void acpi_childdet(device_t, device_t); 189 static bool acpi_suspend(device_t, const pmf_qual_t *); 190 static bool acpi_resume(device_t, const pmf_qual_t *); 191 192 static void acpi_build_tree(struct acpi_softc *); 193 static void acpi_config_tree(struct acpi_softc *); 194 static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, 195 void *, void **); 196 static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t, 197 void *, void **); 198 static void acpi_make_name(struct acpi_devnode *, uint32_t); 199 200 static int acpi_rescan(device_t, const char *, const int *); 201 static void acpi_rescan_early(struct acpi_softc *); 202 static void acpi_rescan_nodes(struct acpi_softc *); 203 static void acpi_rescan_capabilities(device_t); 204 static int acpi_print(void *aux, const char *); 205 206 static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); 207 208 static void acpi_register_fixed_button(struct acpi_softc *, int); 209 static void acpi_deregister_fixed_button(struct acpi_softc *, int); 210 static uint32_t acpi_fixed_button_handler(void *); 211 static void acpi_fixed_button_pressed(void *); 212 213 static void acpi_sleep_init(struct acpi_softc *); 214 215 static int sysctl_hw_acpi_fixedstats(SYSCTLFN_PROTO); 216 static int sysctl_hw_acpi_sleepstate(SYSCTLFN_PROTO); 217 static int sysctl_hw_acpi_sleepstates(SYSCTLFN_PROTO); 218 219 static bool acpi_is_scope(struct acpi_devnode *); 220 static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 221 static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 222 223 void acpi_print_verbose_stub(struct acpi_softc *); 224 void acpi_print_dev_stub(const char *); 225 226 static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **); 227 ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE); 228 229 void (*acpi_print_verbose)(struct acpi_softc *) = acpi_print_verbose_stub; 230 void (*acpi_print_dev)(const char *) = acpi_print_dev_stub; 231 232 CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 233 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 234 235 /* 236 * Probe for ACPI support. 237 * 238 * This is called by the machine-dependent ACPI front-end. 239 * Note: this is not an autoconfiguration interface function. 240 */ 241 int 242 acpi_probe(void) 243 { 244 ACPI_TABLE_HEADER *rsdt; 245 ACPI_STATUS rv; 246 int quirks; 247 248 if (acpi_softc != NULL) 249 panic("%s: already probed", __func__); 250 251 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 252 253 /* 254 * Start up ACPICA. 255 */ 256 AcpiGbl_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("bios-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 */ 465 466 rv = AcpiEnableSubsystem(ACPI_FULL_INITIALIZATION); 467 468 if (ACPI_FAILURE(rv)) 469 goto fail; 470 471 /* 472 * Early initialization of acpiec(4) via ECDT. 473 */ 474 (void)config_found_ia(self, "acpiecdtbus", aa, NULL); 475 476 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 477 478 if (ACPI_FAILURE(rv)) 479 goto fail; 480 481 /* 482 * Scan the namespace and build our device tree. 483 */ 484 acpi_build_tree(sc); 485 486 acpi_md_callback(sc); 487 488 /* 489 * Early initialization of the _PDC control method 490 * that may load additional SSDT tables dynamically. 491 */ 492 (void)acpi_md_pdc(); 493 494 /* 495 * Install global notify handlers. 496 */ 497 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 498 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 499 500 if (ACPI_FAILURE(rv)) 501 goto fail; 502 503 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 504 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 505 506 if (ACPI_FAILURE(rv)) 507 goto fail; 508 509 acpi_active = 1; 510 511 /* Show SCI interrupt. */ 512 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 513 AcpiGbl_FADT.SciInterrupt); 514 515 /* 516 * Install fixed-event handlers. 517 */ 518 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 519 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 520 521 acpitimer_init(sc); 522 acpi_config_tree(sc); 523 acpi_sleep_init(sc); 524 525 #ifdef ACPI_DEBUG 526 acpi_debug_init(); 527 #endif 528 529 /* 530 * Print debug information. 531 */ 532 acpi_print_verbose(sc); 533 534 return; 535 536 fail: 537 aprint_error("%s: failed to initialize ACPI: %s\n", 538 __func__, AcpiFormatException(rv)); 539 } 540 541 /* 542 * XXX: This is incomplete. 543 */ 544 static int 545 acpi_detach(device_t self, int flags) 546 { 547 struct acpi_softc *sc = device_private(self); 548 ACPI_STATUS rv; 549 int rc; 550 551 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 552 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 553 554 if (ACPI_FAILURE(rv)) 555 return EBUSY; 556 557 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 558 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 559 560 if (ACPI_FAILURE(rv)) 561 return EBUSY; 562 563 if ((rc = config_detach_children(self, flags)) != 0) 564 return rc; 565 566 if ((rc = acpitimer_detach()) != 0) 567 return rc; 568 569 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 570 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 571 572 pmf_device_deregister(self); 573 574 acpi_softc = NULL; 575 576 return 0; 577 } 578 579 static void 580 acpi_childdet(device_t self, device_t child) 581 { 582 struct acpi_softc *sc = device_private(self); 583 struct acpi_devnode *ad; 584 585 if (sc->sc_apmbus == child) 586 sc->sc_apmbus = NULL; 587 588 if (sc->sc_hpet == child) 589 sc->sc_hpet = NULL; 590 591 if (sc->sc_wdrt == child) 592 sc->sc_wdrt = NULL; 593 594 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 595 596 if (ad->ad_device == child) 597 ad->ad_device = NULL; 598 } 599 } 600 601 static bool 602 acpi_suspend(device_t dv, const pmf_qual_t *qual) 603 { 604 605 acpi_suspended = 1; 606 607 return true; 608 } 609 610 static bool 611 acpi_resume(device_t dv, const pmf_qual_t *qual) 612 { 613 614 acpi_suspended = 0; 615 616 return true; 617 } 618 619 /* 620 * Namespace scan. 621 */ 622 static void 623 acpi_build_tree(struct acpi_softc *sc) 624 { 625 struct acpi_walkcontext awc; 626 627 /* 628 * Get the root scope handles. 629 */ 630 KASSERT(__arraycount(acpi_scopes) == 4); 631 632 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 633 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 634 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 635 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 636 637 /* 638 * Make the root node. 639 */ 640 awc.aw_sc = sc; 641 awc.aw_parent = NULL; 642 643 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 644 645 KASSERT(sc->sc_root == NULL); 646 KASSERT(awc.aw_parent != NULL); 647 648 sc->sc_root = awc.aw_parent; 649 650 /* 651 * Build the internal namespace. 652 */ 653 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 654 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 655 656 /* 657 * Scan the internal namespace. 658 */ 659 (void)acpi_pcidev_scan(sc->sc_root); 660 } 661 662 static void 663 acpi_config_tree(struct acpi_softc *sc) 664 { 665 666 /* 667 * Configure all everything found "at acpi?". 668 */ 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_SLEEP); 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 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_STA | ACPI_VALID_HID; 1797 ACPI_DEVICE_INFO *newdi; 1798 ACPI_STATUS rv; 1799 uint32_t old; 1800 1801 /* 1802 * If the device is valid and present, 1803 * but not enabled, try to activate it. 1804 */ 1805 if (((*di)->Valid & valid) != valid) 1806 return; 1807 1808 old = (*di)->CurrentStatus; 1809 1810 if ((old & (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED)) != 1811 ACPI_STA_DEVICE_PRESENT) 1812 return; 1813 1814 rv = acpi_allocate_resources(handle); 1815 1816 if (ACPI_FAILURE(rv)) 1817 goto fail; 1818 1819 rv = AcpiGetObjectInfo(handle, &newdi); 1820 1821 if (ACPI_FAILURE(rv)) 1822 goto fail; 1823 1824 ACPI_FREE(*di); 1825 *di = newdi; 1826 1827 aprint_verbose_dev(acpi_softc->sc_dev, 1828 "%s activated, STA 0x%08X -> STA 0x%08X\n", 1829 (*di)->HardwareId.String, old, (*di)->CurrentStatus); 1830 1831 return; 1832 1833 fail: 1834 aprint_error_dev(acpi_softc->sc_dev, "failed to " 1835 "activate %s\n", (*di)->HardwareId.String); 1836 } 1837 1838 /* 1839 * XXX: This very incomplete. 1840 */ 1841 ACPI_STATUS 1842 acpi_allocate_resources(ACPI_HANDLE handle) 1843 { 1844 ACPI_BUFFER bufp, bufc, bufn; 1845 ACPI_RESOURCE *resp, *resc, *resn; 1846 ACPI_RESOURCE_IRQ *irq; 1847 #if 0 1848 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 1849 #endif 1850 ACPI_STATUS rv; 1851 uint delta; 1852 1853 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 1854 if (ACPI_FAILURE(rv)) 1855 goto out; 1856 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 1857 if (ACPI_FAILURE(rv)) { 1858 goto out1; 1859 } 1860 1861 bufn.Length = 1000; 1862 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 1863 resp = bufp.Pointer; 1864 resc = bufc.Pointer; 1865 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 1866 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1867 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 1868 resp = ACPI_NEXT_RESOURCE(resp); 1869 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 1870 break; 1871 /* Found identical Id */ 1872 resn->Type = resc->Type; 1873 switch (resc->Type) { 1874 case ACPI_RESOURCE_TYPE_IRQ: 1875 memcpy(&resn->Data, &resp->Data, 1876 sizeof(ACPI_RESOURCE_IRQ)); 1877 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 1878 irq->Interrupts[0] = 1879 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 1880 Interrupts[irq->InterruptCount-1]; 1881 irq->InterruptCount = 1; 1882 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 1883 break; 1884 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 1885 memcpy(&resn->Data, &resp->Data, 1886 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 1887 #if 0 1888 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 1889 /* 1890 * XXX: Not duplicating the interrupt logic above 1891 * because its not clear what it accomplishes. 1892 */ 1893 xirq->Interrupts[0] = 1894 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 1895 Interrupts[irq->NumberOfInterrupts-1]; 1896 xirq->NumberOfInterrupts = 1; 1897 #endif 1898 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 1899 break; 1900 case ACPI_RESOURCE_TYPE_IO: 1901 memcpy(&resn->Data, &resp->Data, 1902 sizeof(ACPI_RESOURCE_IO)); 1903 resn->Length = resp->Length; 1904 break; 1905 default: 1906 aprint_error_dev(acpi_softc->sc_dev, 1907 "%s: invalid type %u\n", __func__, resc->Type); 1908 rv = AE_BAD_DATA; 1909 goto out2; 1910 } 1911 resc = ACPI_NEXT_RESOURCE(resc); 1912 resn = ACPI_NEXT_RESOURCE(resn); 1913 resp = ACPI_NEXT_RESOURCE(resp); 1914 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 1915 if (delta >= 1916 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 1917 bufn.Length *= 2; 1918 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 1919 M_ACPI, M_WAITOK); 1920 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 1921 delta); 1922 } 1923 } 1924 1925 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1926 aprint_error_dev(acpi_softc->sc_dev, 1927 "%s: resc not exhausted\n", __func__); 1928 rv = AE_BAD_DATA; 1929 goto out3; 1930 } 1931 1932 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 1933 rv = AcpiSetCurrentResources(handle, &bufn); 1934 1935 if (ACPI_FAILURE(rv)) 1936 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 1937 "resources: %s\n", __func__, AcpiFormatException(rv)); 1938 1939 out3: 1940 free(bufn.Pointer, M_ACPI); 1941 out2: 1942 ACPI_FREE(bufc.Pointer); 1943 out1: 1944 ACPI_FREE(bufp.Pointer); 1945 out: 1946 return rv; 1947 } 1948 1949 #endif /* ACPI_ACTIVATE_DEV */ 1950
Indexes created Sun Sep 21 16:09:51 GMT 2025