1 /* $NetBSD: acpi.c,v 1.217 2010/08/22 00:39:08 jmcneill 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 1.217 2010/08/22 00:39:08 jmcneill 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/malloc.h> 112 #include <sys/module.h> 113 #include <sys/mutex.h> 114 #include <sys/sysctl.h> 115 #include <sys/systm.h> 116 #include <sys/timetc.h> 117 118 #include <dev/acpi/acpireg.h> 119 #include <dev/acpi/acpivar.h> 120 #include <dev/acpi/acpi_osd.h> 121 #include <dev/acpi/acpi_pci.h> 122 #include <dev/acpi/acpi_power.h> 123 #include <dev/acpi/acpi_timer.h> 124 #include <dev/acpi/acpi_wakedev.h> 125 126 #define _COMPONENT ACPI_BUS_COMPONENT 127 ACPI_MODULE_NAME ("acpi") 128 129 #if defined(ACPI_PCI_FIXUP) 130 #error The option ACPI_PCI_FIXUP has been obsoleted by PCI_INTR_FIXUP_DISABLED. Please adjust your kernel configuration file. 131 #endif 132 133 #ifdef PCI_INTR_FIXUP_DISABLED 134 #include <dev/pci/pcidevs.h> 135 #endif 136 137 MALLOC_DECLARE(M_ACPI); 138 139 #include <machine/acpi_machdep.h> 140 141 #ifdef ACPI_DEBUGGER 142 #define ACPI_DBGR_INIT 0x01 143 #define ACPI_DBGR_TABLES 0x02 144 #define ACPI_DBGR_ENABLE 0x04 145 #define ACPI_DBGR_PROBE 0x08 146 #define ACPI_DBGR_RUNNING 0x10 147 148 static int acpi_dbgr = 0x00; 149 #endif 150 151 /* 152 * This is a flag we set when the ACPI subsystem is active. Machine 153 * dependent code may wish to skip other steps (such as attaching 154 * subsystems that ACPI supercedes) when ACPI is active. 155 */ 156 int acpi_active; 157 int acpi_force_load; 158 int acpi_suspended = 0; 159 int acpi_verbose_loaded = 0; 160 161 struct acpi_softc *acpi_softc; 162 static uint64_t acpi_root_pointer; 163 extern kmutex_t acpi_interrupt_list_mtx; 164 extern struct cfdriver acpi_cd; 165 static ACPI_HANDLE acpi_scopes[4]; 166 ACPI_TABLE_HEADER *madt_header; 167 168 /* 169 * This structure provides a context for the ACPI 170 * namespace walk performed in acpi_build_tree(). 171 */ 172 struct acpi_walkcontext { 173 struct acpi_softc *aw_sc; 174 struct acpi_devnode *aw_parent; 175 }; 176 177 /* 178 * Ignored HIDs. 179 */ 180 static const char * const acpi_ignored_ids[] = { 181 #if defined(i386) || defined(x86_64) 182 "PNP0000", /* AT interrupt controller is handled internally */ 183 "PNP0200", /* AT DMA controller is handled internally */ 184 "PNP0A??", /* PCI Busses are handled internally */ 185 "PNP0B00", /* AT RTC is handled internally */ 186 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 187 #endif 188 #if defined(x86_64) 189 "PNP0C04", /* FPU is handled internally */ 190 #endif 191 NULL 192 }; 193 194 static int acpi_match(device_t, cfdata_t, void *); 195 static int acpi_submatch(device_t, cfdata_t, const int *, void *); 196 static void acpi_attach(device_t, device_t, void *); 197 static int acpi_detach(device_t, int); 198 static void acpi_childdet(device_t, device_t); 199 static bool acpi_suspend(device_t, const pmf_qual_t *); 200 static bool acpi_resume(device_t, const pmf_qual_t *); 201 202 static void acpi_build_tree(struct acpi_softc *); 203 static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, 204 void *, void **); 205 static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t, 206 void *, void **); 207 208 #ifdef ACPI_ACTIVATE_DEV 209 static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **); 210 static ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE); 211 #endif 212 213 static int acpi_rescan(device_t, const char *, const int *); 214 static void acpi_rescan_nodes(struct acpi_softc *); 215 static void acpi_rescan_capabilities(struct acpi_softc *); 216 static int acpi_print(void *aux, const char *); 217 218 static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); 219 220 static void acpi_register_fixed_button(struct acpi_softc *, int); 221 static void acpi_deregister_fixed_button(struct acpi_softc *, int); 222 static uint32_t acpi_fixed_button_handler(void *); 223 static void acpi_fixed_button_pressed(void *); 224 225 static void acpi_sleep_init(struct acpi_softc *); 226 227 static int sysctl_hw_acpi_fixedstats(SYSCTLFN_PROTO); 228 static int sysctl_hw_acpi_sleepstate(SYSCTLFN_PROTO); 229 static int sysctl_hw_acpi_sleepstates(SYSCTLFN_PROTO); 230 231 static bool acpi_is_scope(struct acpi_devnode *); 232 static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 233 static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 234 235 void acpi_print_verbose_stub(struct acpi_softc *); 236 void acpi_print_dev_stub(const char *); 237 238 void (*acpi_print_verbose)(struct acpi_softc *) = acpi_print_verbose_stub; 239 void (*acpi_print_dev)(const char *) = acpi_print_dev_stub; 240 241 CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 242 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 243 244 /* 245 * Probe for ACPI support. 246 * 247 * This is called by the machine-dependent ACPI front-end. 248 * Note: this is not an autoconfiguration interface function. 249 */ 250 int 251 acpi_probe(void) 252 { 253 ACPI_TABLE_HEADER *rsdt; 254 const char *func; 255 static int once; 256 bool initialized; 257 ACPI_STATUS rv; 258 259 if (once != 0) 260 panic("%s: already probed", __func__); 261 262 once = 1; 263 func = NULL; 264 initialized = false; 265 266 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 267 268 /* 269 * Start up ACPICA. 270 */ 271 #ifdef ACPI_DEBUGGER 272 if (acpi_dbgr & ACPI_DBGR_INIT) 273 acpi_osd_debugger(); 274 #endif 275 276 CTASSERT(TRUE == true); 277 CTASSERT(FALSE == false); 278 279 AcpiGbl_AllMethodsSerialized = false; 280 AcpiGbl_EnableInterpreterSlack = true; 281 282 rv = AcpiInitializeSubsystem(); 283 284 if (ACPI_SUCCESS(rv)) 285 initialized = true; 286 else { 287 func = "AcpiInitializeSubsystem()"; 288 goto fail; 289 } 290 291 /* 292 * Allocate space for RSDT/XSDT and DSDT, 293 * but allow resizing if more tables exist. 294 */ 295 rv = AcpiInitializeTables(NULL, 2, true); 296 297 if (ACPI_FAILURE(rv)) { 298 func = "AcpiInitializeTables()"; 299 goto fail; 300 } 301 302 #ifdef ACPI_DEBUGGER 303 if (acpi_dbgr & ACPI_DBGR_TABLES) 304 acpi_osd_debugger(); 305 #endif 306 307 rv = AcpiLoadTables(); 308 309 if (ACPI_FAILURE(rv)) { 310 func = "AcpiLoadTables()"; 311 goto fail; 312 } 313 314 rsdt = acpi_map_rsdt(); 315 316 if (rsdt == NULL) { 317 func = "acpi_map_rsdt()"; 318 rv = AE_ERROR; 319 goto fail; 320 } 321 322 if (acpi_force_load == 0 && (acpi_find_quirks() & ACPI_QUIRK_BROKEN)) { 323 aprint_normal("ACPI: BIOS is listed as broken:\n"); 324 aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 325 "AslId <%4.4s,%08x>\n", 326 rsdt->OemId, rsdt->OemTableId, 327 rsdt->OemRevision, 328 rsdt->AslCompilerId, 329 rsdt->AslCompilerRevision); 330 aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n"); 331 acpi_unmap_rsdt(rsdt); 332 AcpiTerminate(); 333 return 0; 334 } 335 336 acpi_unmap_rsdt(rsdt); 337 338 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 339 340 if (ACPI_FAILURE(rv)) { 341 func = "AcpiEnableSubsystem()"; 342 goto fail; 343 } 344 345 /* 346 * Looks like we have ACPI! 347 */ 348 return 1; 349 350 fail: 351 KASSERT(rv != AE_OK); 352 KASSERT(func != NULL); 353 354 aprint_error("%s: failed to probe ACPI: %s\n", 355 func, AcpiFormatException(rv)); 356 357 if (initialized != false) 358 (void)AcpiTerminate(); 359 360 return 0; 361 } 362 363 void 364 acpi_disable(void) 365 { 366 367 if (AcpiGbl_FADT.SmiCommand != 0) 368 AcpiDisable(); 369 } 370 371 int 372 acpi_check(device_t parent, const char *ifattr) 373 { 374 return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); 375 } 376 377 /* 378 * Autoconfiguration. 379 */ 380 static int 381 acpi_match(device_t parent, cfdata_t match, void *aux) 382 { 383 /* 384 * XXX: Nada; MD code has called acpi_probe(). 385 */ 386 return 1; 387 } 388 389 static int 390 acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 391 { 392 struct cfattach *ca; 393 394 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 395 396 return (ca == &acpi_ca); 397 } 398 399 static void 400 acpi_attach(device_t parent, device_t self, void *aux) 401 { 402 struct acpi_softc *sc = device_private(self); 403 struct acpibus_attach_args *aa = aux; 404 ACPI_TABLE_HEADER *rsdt; 405 ACPI_STATUS rv; 406 407 aprint_naive("\n"); 408 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 409 410 if (acpi_softc != NULL) 411 panic("%s: already attached", __func__); 412 413 rsdt = acpi_map_rsdt(); 414 415 if (rsdt == NULL) 416 aprint_error_dev(self, "X/RSDT: Not found\n"); 417 else { 418 aprint_verbose_dev(self, 419 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 420 rsdt->OemId, rsdt->OemTableId, 421 rsdt->OemRevision, 422 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 423 } 424 425 acpi_unmap_rsdt(rsdt); 426 427 sc->sc_dev = self; 428 sc->sc_root = NULL; 429 430 sc->sc_sleepstate = ACPI_STATE_S0; 431 sc->sc_quirks = acpi_find_quirks(); 432 433 sysmon_power_settype("acpi"); 434 435 sc->sc_iot = aa->aa_iot; 436 sc->sc_memt = aa->aa_memt; 437 sc->sc_pc = aa->aa_pc; 438 sc->sc_pciflags = aa->aa_pciflags; 439 sc->sc_ic = aa->aa_ic; 440 441 SIMPLEQ_INIT(&sc->ad_head); 442 443 acpi_softc = sc; 444 445 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) 446 aprint_error_dev(self, "couldn't establish power handler\n"); 447 448 /* 449 * Bring ACPI on-line. 450 */ 451 #ifdef ACPI_DEBUGGER 452 if (acpi_dbgr & ACPI_DBGR_ENABLE) 453 acpi_osd_debugger(); 454 #endif 455 456 #define ACPI_ENABLE_PHASE1 \ 457 (ACPI_NO_HANDLER_INIT | ACPI_NO_EVENT_INIT) 458 #define ACPI_ENABLE_PHASE2 \ 459 (ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE | \ 460 ACPI_NO_ADDRESS_SPACE_INIT) 461 462 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE1); 463 464 if (ACPI_FAILURE(rv)) 465 goto fail; 466 467 acpi_md_callback(); 468 469 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE2); 470 471 if (ACPI_FAILURE(rv)) 472 goto fail; 473 474 /* 475 * Early EC handler initialization if ECDT table is available. 476 */ 477 config_found_ia(self, "acpiecdtbus", aa, NULL); 478 479 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 480 481 if (ACPI_FAILURE(rv)) 482 goto fail; 483 484 /* 485 * Install global notify handlers. 486 */ 487 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 488 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 489 490 if (ACPI_FAILURE(rv)) 491 goto fail; 492 493 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 494 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 495 496 if (ACPI_FAILURE(rv)) 497 goto fail; 498 499 acpi_active = 1; 500 501 /* Show SCI interrupt. */ 502 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 503 AcpiGbl_FADT.SciInterrupt); 504 505 /* 506 * Install fixed-event handlers. 507 */ 508 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 509 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 510 511 acpitimer_init(sc); 512 513 #ifdef ACPI_DEBUGGER 514 if (acpi_dbgr & ACPI_DBGR_PROBE) 515 acpi_osd_debugger(); 516 #endif 517 518 /* 519 * Scan the namespace and build our device tree. 520 */ 521 acpi_build_tree(sc); 522 acpi_sleep_init(sc); 523 524 #ifdef ACPI_DEBUGGER 525 if (acpi_dbgr & ACPI_DBGR_RUNNING) 526 acpi_osd_debugger(); 527 #endif 528 529 #ifdef ACPI_DEBUG 530 acpi_debug_init(); 531 #endif 532 533 /* 534 * Print debug information. 535 */ 536 acpi_print_verbose(sc); 537 538 return; 539 540 fail: 541 aprint_error("%s: failed to initialize ACPI: %s\n", 542 __func__, AcpiFormatException(rv)); 543 } 544 545 /* 546 * XXX: This is incomplete. 547 */ 548 static int 549 acpi_detach(device_t self, int flags) 550 { 551 struct acpi_softc *sc = device_private(self); 552 ACPI_STATUS rv; 553 int rc; 554 555 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 556 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 557 558 if (ACPI_FAILURE(rv)) 559 return EBUSY; 560 561 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 562 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 563 564 if (ACPI_FAILURE(rv)) 565 return EBUSY; 566 567 if ((rc = config_detach_children(self, flags)) != 0) 568 return rc; 569 570 if ((rc = acpitimer_detach()) != 0) 571 return rc; 572 573 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 574 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 575 576 pmf_device_deregister(self); 577 578 acpi_softc = NULL; 579 580 return 0; 581 } 582 583 /* 584 * XXX: Need to reclaim any resources? Yes. 585 */ 586 static void 587 acpi_childdet(device_t self, device_t child) 588 { 589 struct acpi_softc *sc = device_private(self); 590 struct acpi_devnode *ad; 591 592 if (sc->sc_apmbus == child) 593 sc->sc_apmbus = NULL; 594 595 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 596 597 if (ad->ad_device == child) 598 ad->ad_device = NULL; 599 } 600 } 601 602 static bool 603 acpi_suspend(device_t dv, const pmf_qual_t *qual) 604 { 605 606 acpi_suspended = 1; 607 608 return true; 609 } 610 611 static bool 612 acpi_resume(device_t dv, const pmf_qual_t *qual) 613 { 614 615 acpi_suspended = 0; 616 617 return true; 618 } 619 620 /* 621 * Namespace scan. 622 */ 623 static void 624 acpi_build_tree(struct acpi_softc *sc) 625 { 626 struct acpi_walkcontext awc; 627 628 /* 629 * Get the root scope handles. 630 */ 631 KASSERT(__arraycount(acpi_scopes) == 4); 632 633 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 634 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 635 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 636 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 637 638 /* 639 * Make the root node. 640 */ 641 awc.aw_sc = sc; 642 awc.aw_parent = NULL; 643 644 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 645 646 KASSERT(sc->sc_root == NULL); 647 KASSERT(awc.aw_parent != NULL); 648 649 sc->sc_root = awc.aw_parent; 650 651 /* 652 * Build the internal namespace. 653 */ 654 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 655 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 656 657 /* 658 * Scan the internal namespace. 659 */ 660 (void)acpi_rescan(sc->sc_dev, NULL, NULL); 661 662 acpi_rescan_capabilities(sc); 663 664 (void)acpi_pcidev_scan(sc->sc_root); 665 } 666 667 static ACPI_STATUS 668 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 669 void *context, void **status) 670 { 671 struct acpi_walkcontext *awc = context; 672 struct acpi_softc *sc = awc->aw_sc; 673 struct acpi_devnode *ad; 674 ACPI_DEVICE_INFO *devinfo; 675 ACPI_OBJECT_TYPE type; 676 ACPI_NAME_UNION *anu; 677 ACPI_STATUS rv; 678 int clear, i; 679 680 rv = AcpiGetObjectInfo(handle, &devinfo); 681 682 if (ACPI_FAILURE(rv)) 683 return AE_OK; /* Do not terminate the walk. */ 684 685 type = devinfo->Type; 686 687 switch (type) { 688 689 case ACPI_TYPE_DEVICE: 690 691 #ifdef ACPI_ACTIVATE_DEV 692 acpi_activate_device(handle, &devinfo); 693 #endif 694 695 case ACPI_TYPE_PROCESSOR: 696 case ACPI_TYPE_THERMAL: 697 case ACPI_TYPE_POWER: 698 699 ad = malloc(sizeof(*ad), M_ACPI, M_NOWAIT | M_ZERO); 700 701 if (ad == NULL) 702 return AE_NO_MEMORY; 703 704 ad->ad_device = NULL; 705 ad->ad_notify = NULL; 706 ad->ad_pciinfo = NULL; 707 708 ad->ad_type = type; 709 ad->ad_handle = handle; 710 ad->ad_devinfo = devinfo; 711 712 ad->ad_root = sc->sc_dev; 713 ad->ad_parent = awc->aw_parent; 714 715 anu = (ACPI_NAME_UNION *)&devinfo->Name; 716 ad->ad_name[4] = '\0'; 717 718 for (i = 3, clear = 0; i >= 0; i--) { 719 720 if (clear == 0 && anu->Ascii[i] == '_') 721 ad->ad_name[i] = '\0'; 722 else { 723 ad->ad_name[i] = anu->Ascii[i]; 724 clear = 1; 725 } 726 } 727 728 if (ad->ad_name[0] == '\0') 729 ad->ad_name[0] = '_'; 730 731 SIMPLEQ_INIT(&ad->ad_child_head); 732 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 733 734 acpi_set_node(ad); 735 736 if (ad->ad_parent != NULL) { 737 738 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 739 ad, ad_child_list); 740 } 741 742 awc->aw_parent = ad; 743 } 744 745 return AE_OK; 746 } 747 748 static ACPI_STATUS 749 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 750 void *context, void **status) 751 { 752 struct acpi_walkcontext *awc = context; 753 754 KASSERT(awc != NULL); 755 KASSERT(awc->aw_parent != NULL); 756 757 if (handle == awc->aw_parent->ad_handle) 758 awc->aw_parent = awc->aw_parent->ad_parent; 759 760 return AE_OK; 761 } 762 763 #ifdef ACPI_ACTIVATE_DEV 764 static void 765 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 766 { 767 static const int valid = ACPI_VALID_STA | ACPI_VALID_HID; 768 ACPI_DEVICE_INFO *newdi; 769 ACPI_STATUS rv; 770 uint32_t old; 771 772 /* 773 * If the device is valid and present, 774 * but not enabled, try to activate it. 775 */ 776 if (((*di)->Valid & valid) != valid) 777 return; 778 779 old = (*di)->CurrentStatus; 780 781 if ((old & (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED)) != 782 ACPI_STA_DEVICE_PRESENT) 783 return; 784 785 rv = acpi_allocate_resources(handle); 786 787 if (ACPI_FAILURE(rv)) 788 goto fail; 789 790 rv = AcpiGetObjectInfo(handle, &newdi); 791 792 if (ACPI_FAILURE(rv)) 793 goto fail; 794 795 ACPI_FREE(*di); 796 *di = newdi; 797 798 aprint_verbose_dev(acpi_softc->sc_dev, 799 "%s activated, STA 0x%08X -> STA 0x%08X\n", 800 (*di)->HardwareId.String, old, (*di)->CurrentStatus); 801 802 return; 803 804 fail: 805 aprint_error_dev(acpi_softc->sc_dev, "failed to " 806 "activate %s\n", (*di)->HardwareId.String); 807 } 808 809 /* 810 * XXX: This very incomplete. 811 */ 812 ACPI_STATUS 813 acpi_allocate_resources(ACPI_HANDLE handle) 814 { 815 ACPI_BUFFER bufp, bufc, bufn; 816 ACPI_RESOURCE *resp, *resc, *resn; 817 ACPI_RESOURCE_IRQ *irq; 818 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 819 ACPI_STATUS rv; 820 uint delta; 821 822 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 823 if (ACPI_FAILURE(rv)) 824 goto out; 825 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 826 if (ACPI_FAILURE(rv)) { 827 goto out1; 828 } 829 830 bufn.Length = 1000; 831 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 832 resp = bufp.Pointer; 833 resc = bufc.Pointer; 834 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 835 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 836 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 837 resp = ACPI_NEXT_RESOURCE(resp); 838 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 839 break; 840 /* Found identical Id */ 841 resn->Type = resc->Type; 842 switch (resc->Type) { 843 case ACPI_RESOURCE_TYPE_IRQ: 844 memcpy(&resn->Data, &resp->Data, 845 sizeof(ACPI_RESOURCE_IRQ)); 846 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 847 irq->Interrupts[0] = 848 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 849 Interrupts[irq->InterruptCount-1]; 850 irq->InterruptCount = 1; 851 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 852 break; 853 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 854 memcpy(&resn->Data, &resp->Data, 855 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 856 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 857 #if 0 858 /* 859 * XXX: Not duplicating the interrupt logic above 860 * because its not clear what it accomplishes. 861 */ 862 xirq->Interrupts[0] = 863 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 864 Interrupts[irq->NumberOfInterrupts-1]; 865 xirq->NumberOfInterrupts = 1; 866 #endif 867 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 868 break; 869 case ACPI_RESOURCE_TYPE_IO: 870 memcpy(&resn->Data, &resp->Data, 871 sizeof(ACPI_RESOURCE_IO)); 872 resn->Length = resp->Length; 873 break; 874 default: 875 aprint_error_dev(acpi_softc->sc_dev, 876 "%s: invalid type %u\n", __func__, resc->Type); 877 rv = AE_BAD_DATA; 878 goto out2; 879 } 880 resc = ACPI_NEXT_RESOURCE(resc); 881 resn = ACPI_NEXT_RESOURCE(resn); 882 resp = ACPI_NEXT_RESOURCE(resp); 883 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 884 if (delta >= 885 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 886 bufn.Length *= 2; 887 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 888 M_ACPI, M_WAITOK); 889 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 890 delta); 891 } 892 } 893 894 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 895 aprint_error_dev(acpi_softc->sc_dev, 896 "%s: resc not exhausted\n", __func__); 897 rv = AE_BAD_DATA; 898 goto out3; 899 } 900 901 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 902 rv = AcpiSetCurrentResources(handle, &bufn); 903 904 if (ACPI_FAILURE(rv)) 905 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 906 "resources: %s\n", __func__, AcpiFormatException(rv)); 907 908 out3: 909 free(bufn.Pointer, M_ACPI); 910 out2: 911 ACPI_FREE(bufc.Pointer); 912 out1: 913 ACPI_FREE(bufp.Pointer); 914 out: 915 return rv; 916 } 917 #endif /* ACPI_ACTIVATE_DEV */ 918 919 /* 920 * Device attachment. 921 */ 922 static int 923 acpi_rescan(device_t self, const char *ifattr, const int *locators) 924 { 925 struct acpi_softc *sc = device_private(self); 926 927 if (ifattr_match(ifattr, "acpinodebus")) 928 acpi_rescan_nodes(sc); 929 930 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 931 sc->sc_apmbus = config_found_ia(sc->sc_dev, 932 "acpiapmbus", NULL, NULL); 933 934 return 0; 935 } 936 937 static void 938 acpi_rescan_nodes(struct acpi_softc *sc) 939 { 940 struct acpi_attach_args aa; 941 struct acpi_devnode *ad; 942 ACPI_DEVICE_INFO *di; 943 944 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 945 946 if (ad->ad_device != NULL) 947 continue; 948 949 /* 950 * There is a bug in ACPICA: it defines the type 951 * of the scopes incorrectly for its own reasons. 952 */ 953 if (acpi_is_scope(ad) != false) 954 continue; 955 956 di = ad->ad_devinfo; 957 958 /* 959 * We only attach devices which are present, enabled, and 960 * functioning properly. However, if a device is enabled, 961 * it is decoding resources and we should claim these, 962 * if possible. This requires changes to bus_space(9). 963 * Note: there is a possible race condition, because _STA 964 * may have changed since di->CurrentStatus was set. 965 */ 966 if (di->Type == ACPI_TYPE_DEVICE) { 967 968 if ((di->Valid & ACPI_VALID_STA) != 0 && 969 (di->CurrentStatus & ACPI_STA_OK) != ACPI_STA_OK) 970 continue; 971 } 972 973 /* 974 * The same problem as above. As for example 975 * thermal zones and power resources do not 976 * have a valid HID, only evaluate devices. 977 */ 978 if (di->Type == ACPI_TYPE_DEVICE && 979 (di->Valid & ACPI_VALID_HID) == 0) 980 continue; 981 982 /* 983 * Handled internally. 984 */ 985 if (di->Type == ACPI_TYPE_POWER) 986 continue; 987 988 /* 989 * Skip ignored HIDs. 990 */ 991 if (acpi_match_hid(di, acpi_ignored_ids)) 992 continue; 993 994 aa.aa_node = ad; 995 aa.aa_iot = sc->sc_iot; 996 aa.aa_memt = sc->sc_memt; 997 aa.aa_pc = sc->sc_pc; 998 aa.aa_pciflags = sc->sc_pciflags; 999 aa.aa_ic = sc->sc_ic; 1000 1001 ad->ad_device = config_found_ia(sc->sc_dev, 1002 "acpinodebus", &aa, acpi_print); 1003 } 1004 } 1005 1006 static void 1007 acpi_rescan_capabilities(struct acpi_softc *sc) 1008 { 1009 struct acpi_devnode *ad; 1010 ACPI_HANDLE tmp; 1011 ACPI_STATUS rv; 1012 1013 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1014 1015 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 1016 continue; 1017 1018 /* 1019 * Scan power resource capabilities. 1020 * 1021 * If any power states are supported, 1022 * at least _PR0 and _PR3 must be present. 1023 */ 1024 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 1025 1026 if (ACPI_SUCCESS(rv)) { 1027 ad->ad_flags |= ACPI_DEVICE_POWER; 1028 acpi_power_add(ad); 1029 } 1030 1031 /* 1032 * Scan wake-up capabilities. 1033 */ 1034 rv = AcpiGetHandle(ad->ad_handle, "_PRW", &tmp); 1035 1036 if (ACPI_SUCCESS(rv)) { 1037 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 1038 acpi_wakedev_add(ad); 1039 } 1040 } 1041 } 1042 1043 static int 1044 acpi_print(void *aux, const char *pnp) 1045 { 1046 struct acpi_attach_args *aa = aux; 1047 ACPI_STATUS rv; 1048 1049 if (pnp) { 1050 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1051 char *pnpstr = 1052 aa->aa_node->ad_devinfo->HardwareId.String; 1053 ACPI_BUFFER buf; 1054 1055 aprint_normal("%s (%s) ", aa->aa_node->ad_name, 1056 pnpstr); 1057 1058 rv = acpi_eval_struct(aa->aa_node->ad_handle, 1059 "_STR", &buf); 1060 if (ACPI_SUCCESS(rv)) { 1061 ACPI_OBJECT *obj = buf.Pointer; 1062 switch (obj->Type) { 1063 case ACPI_TYPE_STRING: 1064 aprint_normal("[%s] ", obj->String.Pointer); 1065 break; 1066 case ACPI_TYPE_BUFFER: 1067 aprint_normal("buffer %p ", obj->Buffer.Pointer); 1068 break; 1069 default: 1070 aprint_normal("type %u ",obj->Type); 1071 break; 1072 } 1073 ACPI_FREE(buf.Pointer); 1074 } 1075 else 1076 acpi_print_dev(pnpstr); 1077 1078 aprint_normal("at %s", pnp); 1079 } else if (aa->aa_node->ad_devinfo->Type != ACPI_TYPE_DEVICE) { 1080 aprint_normal("%s (ACPI Object Type '%s' " 1081 "[0x%02x]) ", aa->aa_node->ad_name, 1082 AcpiUtGetTypeName(aa->aa_node->ad_devinfo->Type), 1083 aa->aa_node->ad_devinfo->Type); 1084 aprint_normal("at %s", pnp); 1085 } else 1086 return 0; 1087 } else { 1088 aprint_normal(" (%s", aa->aa_node->ad_name); 1089 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1090 aprint_normal(", %s", aa->aa_node->ad_devinfo->HardwareId.String); 1091 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_UID) { 1092 const char *uid; 1093 1094 uid = aa->aa_node->ad_devinfo->UniqueId.String; 1095 if (uid[0] == '\0') 1096 uid = "<null>"; 1097 aprint_normal("-%s", uid); 1098 } 1099 } 1100 aprint_normal(")"); 1101 } 1102 1103 return UNCONF; 1104 } 1105 1106 /* 1107 * Notify. 1108 */ 1109 static void 1110 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1111 { 1112 struct acpi_softc *sc = acpi_softc; 1113 struct acpi_devnode *ad; 1114 1115 KASSERT(sc != NULL); 1116 KASSERT(aux == NULL); 1117 KASSERT(acpi_active != 0); 1118 1119 if (acpi_suspended != 0) 1120 return; 1121 1122 /* 1123 * System: 0x00 - 0x7F. 1124 * Device: 0x80 - 0xFF. 1125 */ 1126 switch (event) { 1127 1128 case ACPI_NOTIFY_BUS_CHECK: 1129 case ACPI_NOTIFY_DEVICE_CHECK: 1130 case ACPI_NOTIFY_DEVICE_WAKE: 1131 case ACPI_NOTIFY_EJECT_REQUEST: 1132 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1133 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1134 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1135 case ACPI_NOTIFY_POWER_FAULT: 1136 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1137 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1138 case ACPI_NOTIFY_RESERVED: 1139 case ACPI_NOTIFY_LOCALITY_UPDATE: 1140 break; 1141 } 1142 1143 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1144 "%s (%p)\n", event, acpi_name(handle), handle)); 1145 1146 /* 1147 * We deliver notifications only to drivers 1148 * that have been succesfully attached and 1149 * that have registered a handler with us. 1150 * The opaque pointer is always the device_t. 1151 */ 1152 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1153 1154 if (ad->ad_device == NULL) 1155 continue; 1156 1157 if (ad->ad_notify == NULL) 1158 continue; 1159 1160 if (ad->ad_handle != handle) 1161 continue; 1162 1163 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1164 1165 return; 1166 } 1167 1168 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1169 "for %s (%p)\n", event, acpi_name(handle), handle); 1170 } 1171 1172 bool 1173 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1174 { 1175 struct acpi_softc *sc = acpi_softc; 1176 1177 KASSERT(sc != NULL); 1178 KASSERT(acpi_active != 0); 1179 1180 if (acpi_suspended != 0) 1181 goto fail; 1182 1183 if (ad == NULL || notify == NULL) 1184 goto fail; 1185 1186 ad->ad_notify = notify; 1187 1188 return true; 1189 1190 fail: 1191 aprint_error_dev(sc->sc_dev, "failed to register notify " 1192 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1193 1194 return false; 1195 } 1196 1197 void 1198 acpi_deregister_notify(struct acpi_devnode *ad) 1199 { 1200 1201 ad->ad_notify = NULL; 1202 } 1203 1204 /* 1205 * Fixed buttons. 1206 */ 1207 static void 1208 acpi_register_fixed_button(struct acpi_softc *sc, int event) 1209 { 1210 struct sysmon_pswitch *smpsw; 1211 ACPI_STATUS rv; 1212 int type; 1213 1214 switch (event) { 1215 1216 case ACPI_EVENT_POWER_BUTTON: 1217 1218 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1219 return; 1220 1221 type = PSWITCH_TYPE_POWER; 1222 smpsw = &sc->sc_smpsw_power; 1223 break; 1224 1225 case ACPI_EVENT_SLEEP_BUTTON: 1226 1227 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1228 return; 1229 1230 type = PSWITCH_TYPE_SLEEP; 1231 smpsw = &sc->sc_smpsw_sleep; 1232 break; 1233 1234 default: 1235 rv = AE_TYPE; 1236 goto fail; 1237 } 1238 1239 smpsw->smpsw_type = type; 1240 smpsw->smpsw_name = device_xname(sc->sc_dev); 1241 1242 if (sysmon_pswitch_register(smpsw) != 0) { 1243 rv = AE_ERROR; 1244 goto fail; 1245 } 1246 1247 rv = AcpiInstallFixedEventHandler(event, 1248 acpi_fixed_button_handler, smpsw); 1249 1250 if (ACPI_FAILURE(rv)) { 1251 sysmon_pswitch_unregister(smpsw); 1252 goto fail; 1253 } 1254 1255 aprint_debug_dev(sc->sc_dev, "fixed %s button present\n", 1256 (type != ACPI_EVENT_SLEEP_BUTTON) ? "power" : "sleep"); 1257 1258 return; 1259 1260 fail: 1261 aprint_error_dev(sc->sc_dev, "failed to register " 1262 "fixed event: %s\n", AcpiFormatException(rv)); 1263 } 1264 1265 static void 1266 acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1267 { 1268 struct sysmon_pswitch *smpsw; 1269 ACPI_STATUS rv; 1270 1271 switch (event) { 1272 1273 case ACPI_EVENT_POWER_BUTTON: 1274 smpsw = &sc->sc_smpsw_power; 1275 1276 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1277 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1278 return; 1279 } 1280 1281 break; 1282 1283 case ACPI_EVENT_SLEEP_BUTTON: 1284 smpsw = &sc->sc_smpsw_sleep; 1285 1286 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1287 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1288 return; 1289 } 1290 1291 break; 1292 1293 default: 1294 rv = AE_TYPE; 1295 goto fail; 1296 } 1297 1298 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1299 1300 if (ACPI_SUCCESS(rv)) { 1301 sysmon_pswitch_unregister(smpsw); 1302 return; 1303 } 1304 1305 fail: 1306 aprint_error_dev(sc->sc_dev, "failed to deregister " 1307 "fixed event: %s\n", AcpiFormatException(rv)); 1308 } 1309 1310 static uint32_t 1311 acpi_fixed_button_handler(void *context) 1312 { 1313 static const int handler = OSL_NOTIFY_HANDLER; 1314 struct sysmon_pswitch *smpsw = context; 1315 1316 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1317 1318 return ACPI_INTERRUPT_HANDLED; 1319 } 1320 1321 static void 1322 acpi_fixed_button_pressed(void *context) 1323 { 1324 struct sysmon_pswitch *smpsw = context; 1325 1326 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1327 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1328 "power" : "sleep")); 1329 1330 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1331 } 1332 1333 /* 1334 * Sleep. 1335 */ 1336 static void 1337 acpi_sleep_init(struct acpi_softc *sc) 1338 { 1339 uint8_t a, b, i; 1340 ACPI_STATUS rv; 1341 1342 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1343 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1344 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1345 1346 /* 1347 * Evaluate supported sleep states. 1348 */ 1349 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1350 1351 rv = AcpiGetSleepTypeData(i, &a, &b); 1352 1353 if (ACPI_SUCCESS(rv)) 1354 sc->sc_sleepstates |= __BIT(i); 1355 } 1356 } 1357 1358 void 1359 acpi_enter_sleep_state(struct acpi_softc *sc, int state) 1360 { 1361 ACPI_STATUS rv; 1362 int err; 1363 1364 if (state == sc->sc_sleepstate) 1365 return; 1366 1367 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1368 1369 switch (state) { 1370 1371 case ACPI_STATE_S0: 1372 sc->sc_sleepstate = ACPI_STATE_S0; 1373 return; 1374 1375 case ACPI_STATE_S1: 1376 case ACPI_STATE_S2: 1377 case ACPI_STATE_S3: 1378 case ACPI_STATE_S4: 1379 1380 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1381 aprint_error_dev(sc->sc_dev, "sleep state " 1382 "S%d is not available\n", state); 1383 return; 1384 } 1385 1386 /* 1387 * Evaluate the _TTS method. This should be done before 1388 * pmf_system_suspend(9) and the evaluation of _PTS. 1389 * We should also re-evaluate this once we return to 1390 * S0 or if we abort the sleep state transition in the 1391 * middle (see ACPI 3.0, section 7.3.6). In reality, 1392 * however, the _TTS method is seldom seen in the field. 1393 */ 1394 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1395 1396 if (ACPI_SUCCESS(rv)) 1397 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1398 1399 if (state != ACPI_STATE_S1 && 1400 pmf_system_suspend(PMF_Q_NONE) != true) { 1401 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1402 break; 1403 } 1404 1405 /* 1406 * This will evaluate the _PTS and _SST methods, 1407 * but unlike the documentation claims, not _GTS, 1408 * which is evaluated in AcpiEnterSleepState(). 1409 * This must be called with interrupts enabled. 1410 */ 1411 rv = AcpiEnterSleepStatePrep(state); 1412 1413 if (ACPI_FAILURE(rv)) { 1414 aprint_error_dev(sc->sc_dev, "failed to prepare " 1415 "S%d: %s\n", state, AcpiFormatException(rv)); 1416 break; 1417 } 1418 1419 /* 1420 * After the _PTS method has been evaluated, we can 1421 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1422 */ 1423 acpi_wakedev_commit(sc, state); 1424 1425 sc->sc_sleepstate = state; 1426 1427 if (state == ACPI_STATE_S1) { 1428 1429 /* Just enter the state. */ 1430 acpi_md_OsDisableInterrupt(); 1431 rv = AcpiEnterSleepState(state); 1432 1433 if (ACPI_FAILURE(rv)) 1434 aprint_error_dev(sc->sc_dev, "failed to " 1435 "enter S1: %s\n", AcpiFormatException(rv)); 1436 1437 (void)AcpiLeaveSleepState(state); 1438 1439 } else { 1440 1441 err = acpi_md_sleep(state); 1442 1443 if (state == ACPI_STATE_S4) 1444 AcpiEnable(); 1445 1446 pmf_system_bus_resume(PMF_Q_NONE); 1447 (void)AcpiLeaveSleepState(state); 1448 pmf_system_resume(PMF_Q_NONE); 1449 } 1450 1451 break; 1452 1453 case ACPI_STATE_S5: 1454 1455 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1456 1457 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1458 1459 if (ACPI_FAILURE(rv)) { 1460 aprint_error_dev(sc->sc_dev, "failed to prepare " 1461 "S%d: %s\n", state, AcpiFormatException(rv)); 1462 break; 1463 } 1464 1465 DELAY(1000000); 1466 1467 sc->sc_sleepstate = state; 1468 acpi_md_OsDisableInterrupt(); 1469 1470 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1471 1472 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1473 1474 break; 1475 } 1476 1477 sc->sc_sleepstate = ACPI_STATE_S0; 1478 1479 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1480 } 1481 1482 /* 1483 * Sysctl. 1484 */ 1485 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1486 { 1487 const struct sysctlnode *mnode, *rnode; 1488 int err; 1489 1490 err = sysctl_createv(clog, 0, NULL, &rnode, 1491 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", 1492 NULL, NULL, 0, NULL, 0, 1493 CTL_HW, CTL_EOL); 1494 1495 if (err != 0) 1496 return; 1497 1498 err = sysctl_createv(clog, 0, &rnode, &rnode, 1499 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1500 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1501 NULL, 0, NULL, 0, 1502 CTL_CREATE, CTL_EOL); 1503 1504 if (err != 0) 1505 return; 1506 1507 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1508 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1509 "root", SYSCTL_DESCR("ACPI root pointer"), 1510 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1511 CTL_CREATE, CTL_EOL); 1512 1513 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1514 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1515 "supported_states", SYSCTL_DESCR("Supported system states"), 1516 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1517 CTL_CREATE, CTL_EOL); 1518 1519 err = sysctl_createv(NULL, 0, NULL, &mnode, 1520 CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep", 1521 NULL, NULL, 0, NULL, 0, 1522 CTL_MACHDEP, CTL_EOL); 1523 1524 if (err == 0) { 1525 1526 (void)sysctl_createv(NULL, 0, &mnode, NULL, 1527 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1528 "sleep_state", SYSCTL_DESCR("System sleep state"), 1529 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1530 CTL_CREATE, CTL_EOL); 1531 } 1532 1533 err = sysctl_createv(clog, 0, &rnode, &rnode, 1534 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1535 "stat", SYSCTL_DESCR("ACPI statistics"), 1536 NULL, 0, NULL, 0, 1537 CTL_CREATE, CTL_EOL); 1538 1539 if (err != 0) 1540 return; 1541 1542 (void)sysctl_createv(clog, 0, &rnode, NULL, 1543 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1544 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1545 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1546 CTL_CREATE, CTL_EOL); 1547 1548 (void)sysctl_createv(clog, 0, &rnode, NULL, 1549 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1550 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1551 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1552 CTL_CREATE, CTL_EOL); 1553 1554 (void)sysctl_createv(clog, 0, &rnode, NULL, 1555 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1556 "fixed", SYSCTL_DESCR("Number of fixed events"), 1557 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1558 CTL_CREATE, CTL_EOL); 1559 1560 (void)sysctl_createv(clog, 0, &rnode, NULL, 1561 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1562 "method", SYSCTL_DESCR("Number of methods executed"), 1563 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1564 CTL_CREATE, CTL_EOL); 1565 1566 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1567 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1568 } 1569 1570 static int 1571 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1572 { 1573 struct sysctlnode node; 1574 uint64_t t; 1575 int err, i; 1576 1577 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1578 t += AcpiFixedEventCount[i]; 1579 1580 node = *rnode; 1581 node.sysctl_data = &t; 1582 1583 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1584 1585 if (err || newp == NULL) 1586 return err; 1587 1588 return 0; 1589 } 1590 1591 static int 1592 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1593 { 1594 struct acpi_softc *sc = acpi_softc; 1595 struct sysctlnode node; 1596 int err, t; 1597 1598 if (acpi_softc == NULL) 1599 return ENOSYS; 1600 1601 node = *rnode; 1602 t = sc->sc_sleepstate; 1603 node.sysctl_data = &t; 1604 1605 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1606 1607 if (err || newp == NULL) 1608 return err; 1609 1610 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1611 return EINVAL; 1612 1613 acpi_enter_sleep_state(sc, t); 1614 1615 return 0; 1616 } 1617 1618 static int 1619 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1620 { 1621 struct acpi_softc *sc = acpi_softc; 1622 struct sysctlnode node; 1623 char t[3 * 6 + 1]; 1624 int err; 1625 1626 if (acpi_softc == NULL) 1627 return ENOSYS; 1628 1629 (void)memset(t, '\0', sizeof(t)); 1630 1631 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1632 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1633 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1634 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1635 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1636 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1637 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1638 1639 node = *rnode; 1640 node.sysctl_data = &t; 1641 1642 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1643 1644 if (err || newp == NULL) 1645 return err; 1646 1647 return 0; 1648 } 1649 1650 /* 1651 * Tables. 1652 */ 1653 ACPI_PHYSICAL_ADDRESS 1654 acpi_OsGetRootPointer(void) 1655 { 1656 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1657 1658 /* 1659 * We let MD code handle this since there are multiple ways to do it: 1660 * 1661 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1662 * 1663 * IA-64: Use the EFI. 1664 */ 1665 PhysicalAddress = acpi_md_OsGetRootPointer(); 1666 1667 if (acpi_root_pointer == 0) 1668 acpi_root_pointer = PhysicalAddress; 1669 1670 return PhysicalAddress; 1671 } 1672 1673 static ACPI_TABLE_HEADER * 1674 acpi_map_rsdt(void) 1675 { 1676 ACPI_PHYSICAL_ADDRESS paddr; 1677 ACPI_TABLE_RSDP *rsdp; 1678 1679 paddr = AcpiOsGetRootPointer(); 1680 1681 if (paddr == 0) 1682 return NULL; 1683 1684 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1685 1686 if (rsdp == NULL) 1687 return NULL; 1688 1689 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1690 paddr = rsdp->XsdtPhysicalAddress; 1691 else 1692 paddr = rsdp->RsdtPhysicalAddress; 1693 1694 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1695 1696 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1697 } 1698 1699 static void 1700 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1701 { 1702 1703 if (rsdt == NULL) 1704 return; 1705 1706 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1707 } 1708 1709 /* 1710 * XXX: Refactor to be a generic function that maps tables. 1711 */ 1712 ACPI_STATUS 1713 acpi_madt_map(void) 1714 { 1715 ACPI_STATUS rv; 1716 1717 if (madt_header != NULL) 1718 return AE_ALREADY_EXISTS; 1719 1720 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); 1721 1722 if (ACPI_FAILURE(rv)) 1723 return rv; 1724 1725 return AE_OK; 1726 } 1727 1728 void 1729 acpi_madt_unmap(void) 1730 { 1731 madt_header = NULL; 1732 } 1733 1734 /* 1735 * XXX: Refactor to be a generic function that walks tables. 1736 */ 1737 void 1738 acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) 1739 { 1740 ACPI_SUBTABLE_HEADER *hdrp; 1741 char *madtend, *where; 1742 1743 madtend = (char *)madt_header + madt_header->Length; 1744 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); 1745 1746 while (where < madtend) { 1747 1748 hdrp = (ACPI_SUBTABLE_HEADER *)where; 1749 1750 if (ACPI_FAILURE(func(hdrp, aux))) 1751 break; 1752 1753 where += hdrp->Length; 1754 } 1755 } 1756 1757 /* 1758 * Miscellaneous. 1759 */ 1760 static bool 1761 acpi_is_scope(struct acpi_devnode *ad) 1762 { 1763 int i; 1764 1765 /* 1766 * Return true if the node is a root scope. 1767 */ 1768 if (ad->ad_parent == NULL) 1769 return false; 1770 1771 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1772 return false; 1773 1774 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1775 1776 if (acpi_scopes[i] == NULL) 1777 continue; 1778 1779 if (ad->ad_handle == acpi_scopes[i]) 1780 return true; 1781 } 1782 1783 return false; 1784 } 1785 1786 /* 1787 * ACPIVERBOSE. 1788 */ 1789 void 1790 acpi_load_verbose(void) 1791 { 1792 1793 if (acpi_verbose_loaded == 0) 1794 module_autoload("acpiverbose", MODULE_CLASS_MISC); 1795 } 1796 1797 void 1798 acpi_print_verbose_stub(struct acpi_softc *sc) 1799 { 1800 1801 acpi_load_verbose(); 1802 1803 if (acpi_verbose_loaded != 0) 1804 acpi_print_verbose(sc); 1805 } 1806 1807 void 1808 acpi_print_dev_stub(const char *pnpstr) 1809 { 1810 1811 acpi_load_verbose(); 1812 1813 if (acpi_verbose_loaded != 0) 1814 acpi_print_dev(pnpstr); 1815 } 1816