acpi.c revision 1.204
1 /* $NetBSD: acpi.c,v 1.204 2010/07/02 05:00:48 jruoho 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 2001, 2003 Wasabi Systems, Inc. 34 * All rights reserved. 35 * 36 * Written by Jason R. Thorpe 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 #include <sys/cdefs.h> 68 __KERNEL_RCSID(0, "$NetBSD: acpi.c,v 1.204 2010/07/02 05:00:48 jruoho Exp $"); 69 70 #include "opt_acpi.h" 71 #include "opt_pcifixup.h" 72 73 #include <sys/param.h> 74 #include <sys/device.h> 75 #include <sys/kernel.h> 76 #include <sys/malloc.h> 77 #include <sys/module.h> 78 #include <sys/mutex.h> 79 #include <sys/sysctl.h> 80 #include <sys/systm.h> 81 82 #include <dev/acpi/acpireg.h> 83 #include <dev/acpi/acpivar.h> 84 #include <dev/acpi/acpi_osd.h> 85 #include <dev/acpi/acpi_pci.h> 86 #include <dev/acpi/acpi_power.h> 87 #include <dev/acpi/acpi_timer.h> 88 #include <dev/acpi/acpi_wakedev.h> 89 90 #define _COMPONENT ACPI_BUS_COMPONENT 91 ACPI_MODULE_NAME ("acpi") 92 93 #if defined(ACPI_PCI_FIXUP) 94 #error The option ACPI_PCI_FIXUP has been obsoleted by PCI_INTR_FIXUP_DISABLED. Please adjust your kernel configuration file. 95 #endif 96 97 #ifdef PCI_INTR_FIXUP_DISABLED 98 #include <dev/pci/pcidevs.h> 99 #endif 100 101 MALLOC_DECLARE(M_ACPI); 102 103 #include <machine/acpi_machdep.h> 104 105 #ifdef ACPI_DEBUGGER 106 #define ACPI_DBGR_INIT 0x01 107 #define ACPI_DBGR_TABLES 0x02 108 #define ACPI_DBGR_ENABLE 0x04 109 #define ACPI_DBGR_PROBE 0x08 110 #define ACPI_DBGR_RUNNING 0x10 111 112 static int acpi_dbgr = 0x00; 113 #endif 114 115 /* 116 * This is a flag we set when the ACPI subsystem is active. Machine 117 * dependent code may wish to skip other steps (such as attaching 118 * subsystems that ACPI supercedes) when ACPI is active. 119 */ 120 int acpi_active; 121 int acpi_force_load; 122 int acpi_suspended = 0; 123 124 struct acpi_softc *acpi_softc; 125 static uint64_t acpi_root_pointer; 126 extern kmutex_t acpi_interrupt_list_mtx; 127 static ACPI_HANDLE acpi_scopes[4]; 128 129 /* 130 * This structure provides a context for the ACPI 131 * namespace walk performed in acpi_build_tree(). 132 */ 133 struct acpi_walkcontext { 134 struct acpi_softc *aw_sc; 135 struct acpi_devnode *aw_parent; 136 }; 137 138 /* 139 * Ignored HIDs. 140 */ 141 static const char * const acpi_ignored_ids[] = { 142 #if defined(i386) || defined(x86_64) 143 "PNP0000", /* AT interrupt controller is handled internally */ 144 "PNP0200", /* AT DMA controller is handled internally */ 145 "PNP0A??", /* PCI Busses are handled internally */ 146 "PNP0B00", /* AT RTC is handled internally */ 147 "PNP0C01", /* No "System Board" driver */ 148 "PNP0C02", /* No "PnP motherboard register resources" driver */ 149 "PNP0C0B", /* No need for "ACPI fan" driver */ 150 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 151 "IFX0102", /* No driver for Infineon TPM */ 152 "INT0800", /* No driver for Intel Firmware Hub device */ 153 #endif 154 #if defined(x86_64) 155 "PNP0C04", /* FPU is handled internally */ 156 #endif 157 NULL 158 }; 159 160 static int acpi_match(device_t, cfdata_t, void *); 161 static int acpi_submatch(device_t, cfdata_t, const int *, void *); 162 static void acpi_attach(device_t, device_t, void *); 163 static int acpi_detach(device_t, int); 164 static void acpi_childdet(device_t, device_t); 165 static bool acpi_suspend(device_t, const pmf_qual_t *); 166 static bool acpi_resume(device_t, const pmf_qual_t *); 167 168 static void acpi_build_tree(struct acpi_softc *); 169 static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, 170 void *, void **); 171 static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t, 172 void *, void **); 173 174 #ifdef ACPI_ACTIVATE_DEV 175 static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **); 176 static ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE); 177 #endif 178 179 static int acpi_rescan(device_t, const char *, const int *); 180 static void acpi_rescan_nodes(struct acpi_softc *); 181 static void acpi_rescan_capabilities(struct acpi_softc *); 182 static int acpi_print(void *aux, const char *); 183 184 static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); 185 186 static void acpi_register_fixed_button(struct acpi_softc *, int); 187 static void acpi_deregister_fixed_button(struct acpi_softc *, int); 188 static uint32_t acpi_fixed_button_handler(void *); 189 static void acpi_fixed_button_pressed(void *); 190 191 static void acpi_sleep_init(struct acpi_softc *); 192 193 static int sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS); 194 static int sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS); 195 static int sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS); 196 197 static bool acpi_is_scope(struct acpi_devnode *); 198 static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 199 static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 200 201 extern struct cfdriver acpi_cd; 202 203 /* Handle routine vectors and loading for acpiverbose module */ 204 void acpi_null(void); 205 206 void acpi_print_devnodes_stub(struct acpi_softc *); 207 void acpi_print_tree_stub(struct acpi_devnode *, uint32_t); 208 void acpi_print_dev_stub(const char *); 209 void acpi_wmidump_stub(void *); 210 211 void (*acpi_print_devnodes)(struct acpi_softc *) = acpi_print_devnodes_stub; 212 void (*acpi_print_tree)(struct acpi_devnode *, uint32_t) = acpi_print_tree_stub; 213 void (*acpi_print_dev)(const char *) = acpi_print_dev_stub; 214 void (*acpi_wmidump)(void *) = acpi_wmidump_stub; 215 216 int acpi_verbose_loaded = 0; 217 218 /* 219 * Support for ACPIVERBOSE. 220 */ 221 void 222 acpi_null(void) 223 { 224 /* Nothing to do. */ 225 } 226 227 void 228 acpi_load_verbose(void) 229 { 230 if (acpi_verbose_loaded) 231 return; 232 233 mutex_enter(&module_lock); 234 if (module_autoload("acpiverbose", MODULE_CLASS_MISC) == 0) 235 acpi_verbose_loaded++; 236 mutex_exit(&module_lock); 237 } 238 239 void 240 acpi_print_devnodes_stub(struct acpi_softc *sc) 241 { 242 acpi_load_verbose(); 243 if (acpi_verbose_loaded) 244 acpi_print_devnodes(sc); 245 } 246 247 void 248 acpi_print_tree_stub(struct acpi_devnode *ad, uint32_t level) 249 { 250 acpi_load_verbose(); 251 if (acpi_verbose_loaded) 252 acpi_print_tree(ad, level); 253 } 254 255 void 256 acpi_print_dev_stub(const char *pnpstr) 257 { 258 acpi_load_verbose(); 259 if (acpi_verbose_loaded) 260 acpi_print_dev(pnpstr); 261 } 262 263 void 264 acpi_wmidump_stub(void *arg) 265 { 266 acpi_load_verbose(); 267 if (acpi_verbose_loaded) 268 acpi_wmidump(arg); 269 } 270 271 CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 272 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 273 274 /* 275 * Probe for ACPI support. 276 * 277 * This is called by the machine-dependent ACPI front-end. 278 * Note: this is not an autoconfiguration interface function. 279 */ 280 int 281 acpi_probe(void) 282 { 283 ACPI_TABLE_HEADER *rsdt; 284 const char *func; 285 static int once; 286 bool initialized; 287 ACPI_STATUS rv; 288 289 if (once != 0) 290 panic("%s: already probed", __func__); 291 292 once = 1; 293 func = NULL; 294 initialized = false; 295 296 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 297 298 /* 299 * Start up ACPICA. 300 */ 301 #ifdef ACPI_DEBUGGER 302 if (acpi_dbgr & ACPI_DBGR_INIT) 303 acpi_osd_debugger(); 304 #endif 305 306 CTASSERT(TRUE == true); 307 CTASSERT(FALSE == false); 308 309 AcpiGbl_AllMethodsSerialized = false; 310 AcpiGbl_EnableInterpreterSlack = true; 311 312 rv = AcpiInitializeSubsystem(); 313 314 if (ACPI_SUCCESS(rv)) 315 initialized = true; 316 else { 317 func = "AcpiInitializeSubsystem()"; 318 goto fail; 319 } 320 321 /* 322 * Allocate space for RSDT/XSDT and DSDT, 323 * but allow resizing if more tables exist. 324 */ 325 rv = AcpiInitializeTables(NULL, 2, true); 326 327 if (ACPI_FAILURE(rv)) { 328 func = "AcpiInitializeTables()"; 329 goto fail; 330 } 331 332 #ifdef ACPI_DEBUGGER 333 if (acpi_dbgr & ACPI_DBGR_TABLES) 334 acpi_osd_debugger(); 335 #endif 336 337 rv = AcpiLoadTables(); 338 339 if (ACPI_FAILURE(rv)) { 340 func = "AcpiLoadTables()"; 341 goto fail; 342 } 343 344 rsdt = acpi_map_rsdt(); 345 346 if (rsdt == NULL) { 347 func = "acpi_map_rsdt()"; 348 rv = AE_ERROR; 349 goto fail; 350 } 351 352 if (acpi_force_load == 0 && (acpi_find_quirks() & ACPI_QUIRK_BROKEN)) { 353 aprint_normal("ACPI: BIOS is listed as broken:\n"); 354 aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 355 "AslId <%4.4s,%08x>\n", 356 rsdt->OemId, rsdt->OemTableId, 357 rsdt->OemRevision, 358 rsdt->AslCompilerId, 359 rsdt->AslCompilerRevision); 360 aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n"); 361 acpi_unmap_rsdt(rsdt); 362 AcpiTerminate(); 363 return 0; 364 } 365 366 acpi_unmap_rsdt(rsdt); 367 368 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 369 370 if (ACPI_FAILURE(rv)) { 371 func = "AcpiEnableSubsystem()"; 372 goto fail; 373 } 374 375 /* 376 * Looks like we have ACPI! 377 */ 378 return 1; 379 380 fail: 381 KASSERT(rv != AE_OK); 382 KASSERT(func != NULL); 383 384 aprint_error("%s: failed to probe ACPI: %s\n", 385 func, AcpiFormatException(rv)); 386 387 if (initialized != false) 388 (void)AcpiTerminate(); 389 390 return 0; 391 } 392 393 int 394 acpi_check(device_t parent, const char *ifattr) 395 { 396 return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); 397 } 398 399 /* 400 * Autoconfiguration. 401 */ 402 static int 403 acpi_match(device_t parent, cfdata_t match, void *aux) 404 { 405 /* 406 * XXX: Nada; MD code has called acpi_probe(). 407 */ 408 return 1; 409 } 410 411 static int 412 acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 413 { 414 struct cfattach *ca; 415 416 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 417 418 return (ca == &acpi_ca); 419 } 420 421 static void 422 acpi_attach(device_t parent, device_t self, void *aux) 423 { 424 struct acpi_softc *sc = device_private(self); 425 struct acpibus_attach_args *aa = aux; 426 ACPI_TABLE_HEADER *rsdt; 427 ACPI_STATUS rv; 428 429 aprint_naive("\n"); 430 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 431 432 if (acpi_softc != NULL) 433 panic("%s: already attached", __func__); 434 435 rsdt = acpi_map_rsdt(); 436 437 if (rsdt == NULL) 438 aprint_error_dev(self, "X/RSDT: Not found\n"); 439 else { 440 aprint_verbose_dev(self, 441 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 442 rsdt->OemId, rsdt->OemTableId, 443 rsdt->OemRevision, 444 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 445 } 446 447 acpi_unmap_rsdt(rsdt); 448 449 sc->sc_dev = self; 450 sc->sc_root = NULL; 451 452 sc->sc_sleepstate = ACPI_STATE_S0; 453 sc->sc_quirks = acpi_find_quirks(); 454 455 sysmon_power_settype("acpi"); 456 457 sc->sc_iot = aa->aa_iot; 458 sc->sc_memt = aa->aa_memt; 459 sc->sc_pc = aa->aa_pc; 460 sc->sc_pciflags = aa->aa_pciflags; 461 sc->sc_ic = aa->aa_ic; 462 463 SIMPLEQ_INIT(&sc->ad_head); 464 465 acpi_softc = sc; 466 467 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) 468 aprint_error_dev(self, "couldn't establish power handler\n"); 469 470 /* 471 * Bring ACPI on-line. 472 */ 473 #ifdef ACPI_DEBUGGER 474 if (acpi_dbgr & ACPI_DBGR_ENABLE) 475 acpi_osd_debugger(); 476 #endif 477 478 #define ACPI_ENABLE_PHASE1 \ 479 (ACPI_NO_HANDLER_INIT | ACPI_NO_EVENT_INIT) 480 #define ACPI_ENABLE_PHASE2 \ 481 (ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE | \ 482 ACPI_NO_ADDRESS_SPACE_INIT) 483 484 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE1); 485 486 if (ACPI_FAILURE(rv)) 487 goto fail; 488 489 acpi_md_callback(); 490 491 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE2); 492 493 if (ACPI_FAILURE(rv)) 494 goto fail; 495 496 /* 497 * Early EC handler initialization if ECDT table is available. 498 */ 499 config_found_ia(self, "acpiecdtbus", aa, NULL); 500 501 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 502 503 if (ACPI_FAILURE(rv)) 504 goto fail; 505 506 /* 507 * Install global notify handlers. 508 */ 509 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 510 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 511 512 if (ACPI_FAILURE(rv)) 513 goto fail; 514 515 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 516 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 517 518 if (ACPI_FAILURE(rv)) 519 goto fail; 520 521 acpi_active = 1; 522 523 /* Show SCI interrupt. */ 524 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 525 AcpiGbl_FADT.SciInterrupt); 526 527 /* 528 * Install fixed-event handlers. 529 */ 530 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 531 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 532 533 acpitimer_init(); 534 535 #ifdef ACPI_DEBUGGER 536 if (acpi_dbgr & ACPI_DBGR_PROBE) 537 acpi_osd_debugger(); 538 #endif 539 540 /* 541 * Scan the namespace and build our device tree. 542 */ 543 acpi_build_tree(sc); 544 acpi_sleep_init(sc); 545 546 #ifdef ACPI_DEBUGGER 547 if (acpi_dbgr & ACPI_DBGR_RUNNING) 548 acpi_osd_debugger(); 549 #endif 550 551 #ifdef ACPI_DEBUG 552 acpi_debug_init(); 553 #endif 554 555 return; 556 557 fail: 558 KASSERT(rv != AE_OK); 559 560 aprint_error("%s: failed to initialize ACPI: %s\n", 561 __func__, AcpiFormatException(rv)); 562 } 563 564 /* 565 * XXX: This is incomplete. 566 */ 567 static int 568 acpi_detach(device_t self, int flags) 569 { 570 struct acpi_softc *sc = device_private(self); 571 ACPI_STATUS rv; 572 int rc; 573 574 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 575 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 576 577 if (ACPI_FAILURE(rv)) 578 return EBUSY; 579 580 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 581 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 582 583 if (ACPI_FAILURE(rv)) 584 return EBUSY; 585 586 if ((rc = config_detach_children(self, flags)) != 0) 587 return rc; 588 589 if ((rc = acpitimer_detach()) != 0) 590 return rc; 591 592 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 593 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 594 595 pmf_device_deregister(self); 596 597 acpi_softc = NULL; 598 599 return 0; 600 } 601 602 /* 603 * XXX: Need to reclaim any resources? Yes. 604 */ 605 static void 606 acpi_childdet(device_t self, device_t child) 607 { 608 struct acpi_softc *sc = device_private(self); 609 struct acpi_devnode *ad; 610 611 if (sc->sc_apmbus == child) 612 sc->sc_apmbus = NULL; 613 614 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 615 616 if (ad->ad_device == child) 617 ad->ad_device = NULL; 618 } 619 } 620 621 static bool 622 acpi_suspend(device_t dv, const pmf_qual_t *qual) 623 { 624 625 acpi_suspended = 1; 626 627 return true; 628 } 629 630 static bool 631 acpi_resume(device_t dv, const pmf_qual_t *qual) 632 { 633 634 acpi_suspended = 0; 635 636 return true; 637 } 638 639 /* 640 * Namespace scan. 641 */ 642 static void 643 acpi_build_tree(struct acpi_softc *sc) 644 { 645 struct acpi_walkcontext awc; 646 647 /* 648 * Get the root scope handles. 649 */ 650 KASSERT(__arraycount(acpi_scopes) == 4); 651 652 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 653 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 654 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 655 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 656 657 /* 658 * Make the root node. 659 */ 660 awc.aw_sc = sc; 661 awc.aw_parent = NULL; 662 663 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 664 665 KASSERT(sc->sc_root == NULL); 666 KASSERT(awc.aw_parent != NULL); 667 668 sc->sc_root = awc.aw_parent; 669 670 /* 671 * Build the internal namespace. 672 */ 673 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 674 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 675 676 /* 677 * Scan the internal namespace. 678 */ 679 (void)acpi_rescan(sc->sc_dev, NULL, NULL); 680 681 acpi_rescan_capabilities(sc); 682 683 (void)acpi_pcidev_scan(sc->sc_root); 684 685 acpi_print_devnodes(sc); 686 acpi_print_tree(sc->sc_root, 0); 687 } 688 689 static ACPI_STATUS 690 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 691 void *context, void **status) 692 { 693 struct acpi_walkcontext *awc = context; 694 struct acpi_softc *sc = awc->aw_sc; 695 struct acpi_devnode *ad; 696 ACPI_DEVICE_INFO *devinfo; 697 ACPI_OBJECT_TYPE type; 698 ACPI_NAME_UNION *anu; 699 ACPI_STATUS rv; 700 int clear, i; 701 702 rv = AcpiGetObjectInfo(handle, &devinfo); 703 704 if (ACPI_FAILURE(rv)) 705 return AE_OK; /* Do not terminate the walk. */ 706 707 type = devinfo->Type; 708 709 switch (type) { 710 711 case ACPI_TYPE_DEVICE: 712 713 #ifdef ACPI_ACTIVATE_DEV 714 acpi_activate_device(handle, &devinfo); 715 #endif 716 717 case ACPI_TYPE_PROCESSOR: 718 case ACPI_TYPE_THERMAL: 719 case ACPI_TYPE_POWER: 720 721 ad = malloc(sizeof(*ad), M_ACPI, M_NOWAIT | M_ZERO); 722 723 if (ad == NULL) 724 return AE_NO_MEMORY; 725 726 ad->ad_device = NULL; 727 ad->ad_notify = NULL; 728 ad->ad_pciinfo = NULL; 729 730 ad->ad_type = type; 731 ad->ad_handle = handle; 732 ad->ad_devinfo = devinfo; 733 734 ad->ad_root = sc->sc_dev; 735 ad->ad_parent = awc->aw_parent; 736 737 anu = (ACPI_NAME_UNION *)&devinfo->Name; 738 ad->ad_name[4] = '\0'; 739 740 for (i = 3, clear = 0; i >= 0; i--) { 741 742 if (clear == 0 && anu->Ascii[i] == '_') 743 ad->ad_name[i] = '\0'; 744 else { 745 ad->ad_name[i] = anu->Ascii[i]; 746 clear = 1; 747 } 748 } 749 750 if (ad->ad_name[0] == '\0') 751 ad->ad_name[0] = '_'; 752 753 SIMPLEQ_INIT(&ad->ad_child_head); 754 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 755 756 acpi_set_node(ad); 757 758 if (ad->ad_parent != NULL) { 759 760 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 761 ad, ad_child_list); 762 } 763 764 awc->aw_parent = ad; 765 } 766 767 return AE_OK; 768 } 769 770 static ACPI_STATUS 771 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 772 void *context, void **status) 773 { 774 struct acpi_walkcontext *awc = context; 775 776 KASSERT(awc != NULL); 777 KASSERT(awc->aw_parent != NULL); 778 779 if (handle == awc->aw_parent->ad_handle) 780 awc->aw_parent = awc->aw_parent->ad_parent; 781 782 return AE_OK; 783 } 784 785 #ifdef ACPI_ACTIVATE_DEV 786 static void 787 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 788 { 789 static const int valid = ACPI_VALID_STA | ACPI_VALID_HID; 790 ACPI_DEVICE_INFO *newdi; 791 ACPI_STATUS rv; 792 uint32_t old; 793 794 /* 795 * If the device is valid and present, 796 * but not enabled, try to activate it. 797 */ 798 if (((*di)->Valid & valid) != valid) 799 return; 800 801 old = (*di)->CurrentStatus; 802 803 if ((old & (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED)) != 804 ACPI_STA_DEVICE_PRESENT) 805 return; 806 807 rv = acpi_allocate_resources(handle); 808 809 if (ACPI_FAILURE(rv)) 810 goto fail; 811 812 rv = AcpiGetObjectInfo(handle, &newdi); 813 814 if (ACPI_FAILURE(rv)) 815 goto fail; 816 817 ACPI_FREE(*di); 818 *di = newdi; 819 820 aprint_verbose_dev(acpi_softc->sc_dev, 821 "%s activated, STA 0x%08X -> STA 0x%08X\n", 822 (*di)->HardwareId.String, old, (*di)->CurrentStatus); 823 824 return; 825 826 fail: 827 aprint_error_dev(acpi_softc->sc_dev, "failed to " 828 "activate %s\n", (*di)->HardwareId.String); 829 } 830 831 /* 832 * XXX: This very incomplete. 833 */ 834 ACPI_STATUS 835 acpi_allocate_resources(ACPI_HANDLE handle) 836 { 837 ACPI_BUFFER bufp, bufc, bufn; 838 ACPI_RESOURCE *resp, *resc, *resn; 839 ACPI_RESOURCE_IRQ *irq; 840 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 841 ACPI_STATUS rv; 842 uint delta; 843 844 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 845 if (ACPI_FAILURE(rv)) 846 goto out; 847 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 848 if (ACPI_FAILURE(rv)) { 849 goto out1; 850 } 851 852 bufn.Length = 1000; 853 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 854 resp = bufp.Pointer; 855 resc = bufc.Pointer; 856 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 857 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 858 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 859 resp = ACPI_NEXT_RESOURCE(resp); 860 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 861 break; 862 /* Found identical Id */ 863 resn->Type = resc->Type; 864 switch (resc->Type) { 865 case ACPI_RESOURCE_TYPE_IRQ: 866 memcpy(&resn->Data, &resp->Data, 867 sizeof(ACPI_RESOURCE_IRQ)); 868 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 869 irq->Interrupts[0] = 870 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 871 Interrupts[irq->InterruptCount-1]; 872 irq->InterruptCount = 1; 873 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 874 break; 875 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 876 memcpy(&resn->Data, &resp->Data, 877 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 878 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 879 #if 0 880 /* 881 * XXX: Not duplicating the interrupt logic above 882 * because its not clear what it accomplishes. 883 */ 884 xirq->Interrupts[0] = 885 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 886 Interrupts[irq->NumberOfInterrupts-1]; 887 xirq->NumberOfInterrupts = 1; 888 #endif 889 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 890 break; 891 case ACPI_RESOURCE_TYPE_IO: 892 memcpy(&resn->Data, &resp->Data, 893 sizeof(ACPI_RESOURCE_IO)); 894 resn->Length = resp->Length; 895 break; 896 default: 897 aprint_error_dev(acpi_softc->sc_dev, 898 "%s: invalid type %u\n", __func__, resc->Type); 899 rv = AE_BAD_DATA; 900 goto out2; 901 } 902 resc = ACPI_NEXT_RESOURCE(resc); 903 resn = ACPI_NEXT_RESOURCE(resn); 904 resp = ACPI_NEXT_RESOURCE(resp); 905 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 906 if (delta >= 907 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 908 bufn.Length *= 2; 909 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 910 M_ACPI, M_WAITOK); 911 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 912 delta); 913 } 914 } 915 916 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 917 aprint_error_dev(acpi_softc->sc_dev, 918 "%s: resc not exhausted\n", __func__); 919 rv = AE_BAD_DATA; 920 goto out3; 921 } 922 923 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 924 rv = AcpiSetCurrentResources(handle, &bufn); 925 926 if (ACPI_FAILURE(rv)) 927 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 928 "resources: %s\n", __func__, AcpiFormatException(rv)); 929 930 out3: 931 free(bufn.Pointer, M_ACPI); 932 out2: 933 ACPI_FREE(bufc.Pointer); 934 out1: 935 ACPI_FREE(bufp.Pointer); 936 out: 937 return rv; 938 } 939 #endif /* ACPI_ACTIVATE_DEV */ 940 941 /* 942 * Device attachment. 943 */ 944 static int 945 acpi_rescan(device_t self, const char *ifattr, const int *locators) 946 { 947 struct acpi_softc *sc = device_private(self); 948 949 if (ifattr_match(ifattr, "acpinodebus")) 950 acpi_rescan_nodes(sc); 951 952 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 953 sc->sc_apmbus = config_found_ia(sc->sc_dev, 954 "acpiapmbus", NULL, NULL); 955 956 return 0; 957 } 958 959 static void 960 acpi_rescan_nodes(struct acpi_softc *sc) 961 { 962 struct acpi_attach_args aa; 963 struct acpi_devnode *ad; 964 ACPI_DEVICE_INFO *di; 965 966 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 967 968 if (ad->ad_device != NULL) 969 continue; 970 971 /* 972 * There is a bug in ACPICA: it defines the type 973 * of the scopes incorrectly for its own reasons. 974 */ 975 if (acpi_is_scope(ad) != false) 976 continue; 977 978 di = ad->ad_devinfo; 979 980 /* 981 * We only attach devices which are present, enabled, and 982 * functioning properly. However, if a device is enabled, 983 * it is decoding resources and we should claim these, 984 * if possible. This requires changes to bus_space(9). 985 */ 986 if (di->Type == ACPI_TYPE_DEVICE) { 987 988 if ((di->Valid & ACPI_VALID_STA) != 0 && 989 (di->CurrentStatus & ACPI_STA_OK) != ACPI_STA_OK) 990 continue; 991 } 992 993 /* 994 * The same problem as above. As for example 995 * thermal zones and power resources do not 996 * have a valid HID, only evaluate devices. 997 */ 998 if (di->Type == ACPI_TYPE_DEVICE && 999 (di->Valid & ACPI_VALID_HID) == 0) 1000 continue; 1001 1002 /* 1003 * Handled internally. 1004 */ 1005 if (di->Type == ACPI_TYPE_POWER || 1006 di->Type == ACPI_TYPE_PROCESSOR) 1007 continue; 1008 1009 /* 1010 * Skip ignored HIDs. 1011 */ 1012 if (acpi_match_hid(di, acpi_ignored_ids)) 1013 continue; 1014 1015 aa.aa_node = ad; 1016 aa.aa_iot = sc->sc_iot; 1017 aa.aa_memt = sc->sc_memt; 1018 aa.aa_pc = sc->sc_pc; 1019 aa.aa_pciflags = sc->sc_pciflags; 1020 aa.aa_ic = sc->sc_ic; 1021 1022 ad->ad_device = config_found_ia(sc->sc_dev, 1023 "acpinodebus", &aa, acpi_print); 1024 } 1025 } 1026 1027 static void 1028 acpi_rescan_capabilities(struct acpi_softc *sc) 1029 { 1030 struct acpi_devnode *ad; 1031 ACPI_HANDLE tmp; 1032 ACPI_STATUS rv; 1033 1034 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1035 1036 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 1037 continue; 1038 1039 /* 1040 * Scan power resource capabilities. 1041 * 1042 * If any power states are supported, 1043 * at least _PR0 and _PR3 must be present. 1044 */ 1045 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 1046 1047 if (ACPI_SUCCESS(rv)) { 1048 ad->ad_flags |= ACPI_DEVICE_POWER; 1049 acpi_power_add(ad); 1050 } 1051 1052 /* 1053 * Scan wake-up capabilities. 1054 */ 1055 rv = AcpiGetHandle(ad->ad_handle, "_PRW", &tmp); 1056 1057 if (ACPI_SUCCESS(rv)) { 1058 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 1059 acpi_wakedev_add(ad); 1060 } 1061 } 1062 } 1063 1064 static int 1065 acpi_print(void *aux, const char *pnp) 1066 { 1067 struct acpi_attach_args *aa = aux; 1068 ACPI_STATUS rv; 1069 1070 if (pnp) { 1071 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1072 char *pnpstr = 1073 aa->aa_node->ad_devinfo->HardwareId.String; 1074 ACPI_BUFFER buf; 1075 1076 aprint_normal("%s (%s) ", aa->aa_node->ad_name, 1077 pnpstr); 1078 1079 rv = acpi_eval_struct(aa->aa_node->ad_handle, 1080 "_STR", &buf); 1081 if (ACPI_SUCCESS(rv)) { 1082 ACPI_OBJECT *obj = buf.Pointer; 1083 switch (obj->Type) { 1084 case ACPI_TYPE_STRING: 1085 aprint_normal("[%s] ", obj->String.Pointer); 1086 break; 1087 case ACPI_TYPE_BUFFER: 1088 aprint_normal("buffer %p ", obj->Buffer.Pointer); 1089 break; 1090 default: 1091 aprint_normal("type %u ",obj->Type); 1092 break; 1093 } 1094 ACPI_FREE(buf.Pointer); 1095 } 1096 else 1097 acpi_print_dev(pnpstr); 1098 1099 aprint_normal("at %s", pnp); 1100 } else if (aa->aa_node->ad_devinfo->Type != ACPI_TYPE_DEVICE) { 1101 aprint_normal("%s (ACPI Object Type '%s' " 1102 "[0x%02x]) ", aa->aa_node->ad_name, 1103 AcpiUtGetTypeName(aa->aa_node->ad_devinfo->Type), 1104 aa->aa_node->ad_devinfo->Type); 1105 aprint_normal("at %s", pnp); 1106 } else 1107 return 0; 1108 } else { 1109 aprint_normal(" (%s", aa->aa_node->ad_name); 1110 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1111 aprint_normal(", %s", aa->aa_node->ad_devinfo->HardwareId.String); 1112 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_UID) { 1113 const char *uid; 1114 1115 uid = aa->aa_node->ad_devinfo->UniqueId.String; 1116 if (uid[0] == '\0') 1117 uid = "<null>"; 1118 aprint_normal("-%s", uid); 1119 } 1120 } 1121 aprint_normal(")"); 1122 } 1123 1124 return UNCONF; 1125 } 1126 1127 /* 1128 * Notify. 1129 */ 1130 static void 1131 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1132 { 1133 struct acpi_softc *sc = acpi_softc; 1134 struct acpi_devnode *ad; 1135 1136 KASSERT(sc != NULL); 1137 KASSERT(aux == NULL); 1138 KASSERT(acpi_active != 0); 1139 1140 if (acpi_suspended != 0) 1141 return; 1142 1143 /* 1144 * System: 0x00 - 0x7F. 1145 * Device: 0x80 - 0xFF. 1146 */ 1147 switch (event) { 1148 1149 case ACPI_NOTIFY_BUS_CHECK: 1150 case ACPI_NOTIFY_DEVICE_CHECK: 1151 case ACPI_NOTIFY_DEVICE_WAKE: 1152 case ACPI_NOTIFY_EJECT_REQUEST: 1153 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1154 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1155 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1156 case ACPI_NOTIFY_POWER_FAULT: 1157 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1158 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1159 case ACPI_NOTIFY_RESERVED: 1160 case ACPI_NOTIFY_LOCALITY_UPDATE: 1161 break; 1162 } 1163 1164 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1165 "%s (%p)\n", event, acpi_name(handle), handle)); 1166 1167 /* 1168 * We deliver notifications only to drivers 1169 * that have been succesfully attached and 1170 * that have registered a handler with us. 1171 * The opaque pointer is always the device_t. 1172 */ 1173 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1174 1175 if (ad->ad_device == NULL) 1176 continue; 1177 1178 if (ad->ad_notify == NULL) 1179 continue; 1180 1181 if (ad->ad_handle != handle) 1182 continue; 1183 1184 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1185 1186 return; 1187 } 1188 1189 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1190 "for %s (%p)\n", event, acpi_name(handle), handle); 1191 } 1192 1193 bool 1194 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1195 { 1196 struct acpi_softc *sc = acpi_softc; 1197 1198 KASSERT(sc != NULL); 1199 KASSERT(acpi_active != 0); 1200 1201 if (acpi_suspended != 0) 1202 goto fail; 1203 1204 if (ad == NULL || notify == NULL) 1205 goto fail; 1206 1207 ad->ad_notify = notify; 1208 1209 return true; 1210 1211 fail: 1212 aprint_error_dev(sc->sc_dev, "failed to register notify " 1213 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1214 1215 return false; 1216 } 1217 1218 void 1219 acpi_deregister_notify(struct acpi_devnode *ad) 1220 { 1221 1222 ad->ad_notify = NULL; 1223 } 1224 1225 /* 1226 * Fixed buttons. 1227 */ 1228 static void 1229 acpi_register_fixed_button(struct acpi_softc *sc, int event) 1230 { 1231 struct sysmon_pswitch *smpsw; 1232 ACPI_STATUS rv; 1233 int type; 1234 1235 switch (event) { 1236 1237 case ACPI_EVENT_POWER_BUTTON: 1238 1239 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1240 return; 1241 1242 type = PSWITCH_TYPE_POWER; 1243 smpsw = &sc->sc_smpsw_power; 1244 break; 1245 1246 case ACPI_EVENT_SLEEP_BUTTON: 1247 1248 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1249 return; 1250 1251 type = PSWITCH_TYPE_SLEEP; 1252 smpsw = &sc->sc_smpsw_sleep; 1253 break; 1254 1255 default: 1256 rv = AE_TYPE; 1257 goto fail; 1258 } 1259 1260 smpsw->smpsw_type = type; 1261 smpsw->smpsw_name = device_xname(sc->sc_dev); 1262 1263 if (sysmon_pswitch_register(smpsw) != 0) { 1264 rv = AE_ERROR; 1265 goto fail; 1266 } 1267 1268 rv = AcpiInstallFixedEventHandler(event, 1269 acpi_fixed_button_handler, smpsw); 1270 1271 if (ACPI_FAILURE(rv)) { 1272 sysmon_pswitch_unregister(smpsw); 1273 goto fail; 1274 } 1275 1276 aprint_debug_dev(sc->sc_dev, "fixed %s button present\n", 1277 (type != ACPI_EVENT_SLEEP_BUTTON) ? "power" : "sleep"); 1278 1279 return; 1280 1281 fail: 1282 aprint_error_dev(sc->sc_dev, "failed to register " 1283 "fixed event: %s\n", AcpiFormatException(rv)); 1284 } 1285 1286 static void 1287 acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1288 { 1289 struct sysmon_pswitch *smpsw; 1290 ACPI_STATUS rv; 1291 1292 switch (event) { 1293 1294 case ACPI_EVENT_POWER_BUTTON: 1295 smpsw = &sc->sc_smpsw_power; 1296 1297 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1298 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1299 return; 1300 } 1301 1302 break; 1303 1304 case ACPI_EVENT_SLEEP_BUTTON: 1305 smpsw = &sc->sc_smpsw_sleep; 1306 1307 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1308 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1309 return; 1310 } 1311 1312 break; 1313 1314 default: 1315 rv = AE_TYPE; 1316 goto fail; 1317 } 1318 1319 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1320 1321 if (ACPI_SUCCESS(rv)) { 1322 sysmon_pswitch_unregister(smpsw); 1323 return; 1324 } 1325 1326 fail: 1327 aprint_error_dev(sc->sc_dev, "failed to deregister " 1328 "fixed event: %s\n", AcpiFormatException(rv)); 1329 } 1330 1331 static uint32_t 1332 acpi_fixed_button_handler(void *context) 1333 { 1334 static const int handler = OSL_NOTIFY_HANDLER; 1335 struct sysmon_pswitch *smpsw = context; 1336 1337 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1338 1339 return ACPI_INTERRUPT_HANDLED; 1340 } 1341 1342 static void 1343 acpi_fixed_button_pressed(void *context) 1344 { 1345 struct sysmon_pswitch *smpsw = context; 1346 1347 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1348 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1349 "power" : "sleep")); 1350 1351 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1352 } 1353 1354 /* 1355 * Sleep. 1356 */ 1357 static void 1358 acpi_sleep_init(struct acpi_softc *sc) 1359 { 1360 uint8_t a, b, i; 1361 ACPI_STATUS rv; 1362 1363 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1364 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1365 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1366 1367 /* 1368 * Evaluate supported sleep states. 1369 */ 1370 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1371 1372 rv = AcpiGetSleepTypeData(i, &a, &b); 1373 1374 if (ACPI_SUCCESS(rv)) 1375 sc->sc_sleepstates |= __BIT(i); 1376 } 1377 } 1378 1379 void 1380 acpi_enter_sleep_state(struct acpi_softc *sc, int state) 1381 { 1382 ACPI_STATUS rv; 1383 int err; 1384 1385 if (state == sc->sc_sleepstate) 1386 return; 1387 1388 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1389 1390 switch (state) { 1391 1392 case ACPI_STATE_S0: 1393 sc->sc_sleepstate = ACPI_STATE_S0; 1394 return; 1395 1396 case ACPI_STATE_S1: 1397 case ACPI_STATE_S2: 1398 case ACPI_STATE_S3: 1399 case ACPI_STATE_S4: 1400 1401 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1402 aprint_error_dev(sc->sc_dev, "sleep state " 1403 "S%d is not available\n", state); 1404 return; 1405 } 1406 1407 /* 1408 * Evaluate the _TTS method. This should be done before 1409 * pmf_system_suspend(9) and the evaluation of _PTS. 1410 * We should also re-evaluate this once we return to 1411 * S0 or if we abort the sleep state transition in the 1412 * middle (see ACPI 3.0, section 7.3.6). In reality, 1413 * however, the _TTS method is seldom seen in the field. 1414 */ 1415 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1416 1417 if (ACPI_SUCCESS(rv)) 1418 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1419 1420 if (state != ACPI_STATE_S1 && 1421 pmf_system_suspend(PMF_Q_NONE) != true) { 1422 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1423 break; 1424 } 1425 1426 /* 1427 * This will evaluate the _PTS and _SST methods, 1428 * but unlike the documentation claims, not _GTS, 1429 * which is evaluated in AcpiEnterSleepState(). 1430 * This must be called with interrupts enabled. 1431 */ 1432 rv = AcpiEnterSleepStatePrep(state); 1433 1434 if (ACPI_FAILURE(rv)) { 1435 aprint_error_dev(sc->sc_dev, "failed to prepare " 1436 "S%d: %s\n", state, AcpiFormatException(rv)); 1437 break; 1438 } 1439 1440 /* 1441 * After the _PTS method has been evaluated, we can 1442 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1443 */ 1444 acpi_wakedev_commit(sc, state); 1445 1446 sc->sc_sleepstate = state; 1447 1448 if (state == ACPI_STATE_S1) { 1449 1450 /* Just enter the state. */ 1451 acpi_md_OsDisableInterrupt(); 1452 rv = AcpiEnterSleepState(state); 1453 1454 if (ACPI_FAILURE(rv)) 1455 aprint_error_dev(sc->sc_dev, "failed to " 1456 "enter S1: %s\n", AcpiFormatException(rv)); 1457 1458 (void)AcpiLeaveSleepState(state); 1459 1460 } else { 1461 1462 err = acpi_md_sleep(state); 1463 1464 if (state == ACPI_STATE_S4) 1465 AcpiEnable(); 1466 1467 pmf_system_bus_resume(PMF_Q_NONE); 1468 (void)AcpiLeaveSleepState(state); 1469 pmf_system_resume(PMF_Q_NONE); 1470 } 1471 1472 break; 1473 1474 case ACPI_STATE_S5: 1475 1476 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1477 1478 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1479 1480 if (ACPI_FAILURE(rv)) { 1481 aprint_error_dev(sc->sc_dev, "failed to prepare " 1482 "S%d: %s\n", state, AcpiFormatException(rv)); 1483 break; 1484 } 1485 1486 DELAY(1000000); 1487 1488 sc->sc_sleepstate = state; 1489 acpi_md_OsDisableInterrupt(); 1490 1491 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1492 1493 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1494 1495 break; 1496 } 1497 1498 sc->sc_sleepstate = ACPI_STATE_S0; 1499 1500 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1501 } 1502 1503 /* 1504 * Sysctl. 1505 */ 1506 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1507 { 1508 const struct sysctlnode *mnode, *rnode; 1509 int err; 1510 1511 err = sysctl_createv(clog, 0, NULL, &rnode, 1512 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", 1513 NULL, NULL, 0, NULL, 0, 1514 CTL_HW, CTL_EOL); 1515 1516 if (err != 0) 1517 return; 1518 1519 err = sysctl_createv(clog, 0, &rnode, &rnode, 1520 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1521 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1522 NULL, 0, NULL, 0, 1523 CTL_CREATE, CTL_EOL); 1524 1525 if (err != 0) 1526 return; 1527 1528 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1529 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1530 "root", SYSCTL_DESCR("ACPI root pointer"), 1531 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1532 CTL_CREATE, CTL_EOL); 1533 1534 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1535 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1536 "supported_states", SYSCTL_DESCR("Supported system states"), 1537 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1538 CTL_CREATE, CTL_EOL); 1539 1540 err = sysctl_createv(NULL, 0, NULL, &mnode, 1541 CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep", 1542 NULL, NULL, 0, NULL, 0, 1543 CTL_MACHDEP, CTL_EOL); 1544 1545 if (err == 0) { 1546 1547 (void)sysctl_createv(NULL, 0, &mnode, NULL, 1548 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1549 "sleep_state", SYSCTL_DESCR("System sleep state"), 1550 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1551 CTL_CREATE, CTL_EOL); 1552 } 1553 1554 err = sysctl_createv(clog, 0, &rnode, &rnode, 1555 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1556 "stat", SYSCTL_DESCR("ACPI statistics"), 1557 NULL, 0, NULL, 0, 1558 CTL_CREATE, CTL_EOL); 1559 1560 if (err != 0) 1561 return; 1562 1563 (void)sysctl_createv(clog, 0, &rnode, NULL, 1564 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1565 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1566 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1567 CTL_CREATE, CTL_EOL); 1568 1569 (void)sysctl_createv(clog, 0, &rnode, NULL, 1570 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1571 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1572 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1573 CTL_CREATE, CTL_EOL); 1574 1575 (void)sysctl_createv(clog, 0, &rnode, NULL, 1576 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1577 "fixed", SYSCTL_DESCR("Number of fixed events"), 1578 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1579 CTL_CREATE, CTL_EOL); 1580 1581 (void)sysctl_createv(clog, 0, &rnode, NULL, 1582 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1583 "method", SYSCTL_DESCR("Number of methods executed"), 1584 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1585 CTL_CREATE, CTL_EOL); 1586 1587 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1588 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1589 } 1590 1591 static int 1592 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1593 { 1594 struct sysctlnode node; 1595 uint64_t t; 1596 int err, i; 1597 1598 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1599 t += AcpiFixedEventCount[i]; 1600 1601 node = *rnode; 1602 node.sysctl_data = &t; 1603 1604 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1605 1606 if (err || newp == NULL) 1607 return err; 1608 1609 return 0; 1610 } 1611 1612 static int 1613 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1614 { 1615 struct acpi_softc *sc = acpi_softc; 1616 struct sysctlnode node; 1617 int err, t; 1618 1619 if (acpi_softc == NULL) 1620 return ENOSYS; 1621 1622 node = *rnode; 1623 t = sc->sc_sleepstate; 1624 node.sysctl_data = &t; 1625 1626 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1627 1628 if (err || newp == NULL) 1629 return err; 1630 1631 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1632 return EINVAL; 1633 1634 acpi_enter_sleep_state(sc, t); 1635 1636 return 0; 1637 } 1638 1639 static int 1640 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1641 { 1642 struct acpi_softc *sc = acpi_softc; 1643 struct sysctlnode node; 1644 char t[3 * 6 + 1]; 1645 int err; 1646 1647 if (acpi_softc == NULL) 1648 return ENOSYS; 1649 1650 (void)memset(t, '\0', sizeof(t)); 1651 1652 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1653 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1654 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1655 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1656 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1657 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1658 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1659 1660 node = *rnode; 1661 node.sysctl_data = &t; 1662 1663 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1664 1665 if (err || newp == NULL) 1666 return err; 1667 1668 return 0; 1669 } 1670 1671 /* 1672 * Miscellaneous. 1673 */ 1674 static bool 1675 acpi_is_scope(struct acpi_devnode *ad) 1676 { 1677 int i; 1678 1679 /* 1680 * Return true if the node is a root scope. 1681 */ 1682 if (ad->ad_parent == NULL) 1683 return false; 1684 1685 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1686 return false; 1687 1688 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1689 1690 if (acpi_scopes[i] == NULL) 1691 continue; 1692 1693 if (ad->ad_handle == acpi_scopes[i]) 1694 return true; 1695 } 1696 1697 return false; 1698 } 1699 1700 ACPI_PHYSICAL_ADDRESS 1701 acpi_OsGetRootPointer(void) 1702 { 1703 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1704 1705 /* 1706 * We let MD code handle this since there are multiple ways to do it: 1707 * 1708 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1709 * 1710 * IA-64: Use the EFI. 1711 */ 1712 PhysicalAddress = acpi_md_OsGetRootPointer(); 1713 1714 if (acpi_root_pointer == 0) 1715 acpi_root_pointer = PhysicalAddress; 1716 1717 return PhysicalAddress; 1718 } 1719 1720 static ACPI_TABLE_HEADER * 1721 acpi_map_rsdt(void) 1722 { 1723 ACPI_PHYSICAL_ADDRESS paddr; 1724 ACPI_TABLE_RSDP *rsdp; 1725 1726 paddr = AcpiOsGetRootPointer(); 1727 1728 if (paddr == 0) 1729 return NULL; 1730 1731 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1732 1733 if (rsdp == NULL) 1734 return NULL; 1735 1736 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1737 paddr = rsdp->XsdtPhysicalAddress; 1738 else 1739 paddr = rsdp->RsdtPhysicalAddress; 1740 1741 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1742 1743 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1744 } 1745 1746 static void 1747 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1748 { 1749 1750 if (rsdt == NULL) 1751 return; 1752 1753 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1754 } 1755
Indexes created Fri Sep 26 08:10:20 GMT 2025