1 /* $NetBSD: acpi.c,v 1.203 2010/06/10 20:36:55 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 1.203 2010/06/10 20:36:55 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_rescan1(struct acpi_softc *, 181 const char *, const int *); 182 static void acpi_rescan_nodes(struct acpi_softc *); 183 static void acpi_rescan_capabilities(struct acpi_softc *); 184 static int acpi_print(void *aux, const char *); 185 186 static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); 187 188 static void acpi_register_fixed_button(struct acpi_softc *, int); 189 static void acpi_deregister_fixed_button(struct acpi_softc *, int); 190 static uint32_t acpi_fixed_button_handler(void *); 191 static void acpi_fixed_button_pressed(void *); 192 193 static void acpi_sleep_init(struct acpi_softc *); 194 195 static int sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS); 196 static int sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS); 197 static int sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS); 198 199 static bool acpi_is_scope(struct acpi_devnode *); 200 static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 201 static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 202 203 extern struct cfdriver acpi_cd; 204 205 /* Handle routine vectors and loading for acpiverbose module */ 206 void acpi_null(void); 207 208 void acpi_print_devnodes_stub(struct acpi_softc *); 209 void acpi_print_tree_stub(struct acpi_devnode *, uint32_t); 210 void acpi_print_dev_stub(const char *); 211 void acpi_wmidump_stub(void *); 212 213 void (*acpi_print_devnodes)(struct acpi_softc *) = acpi_print_devnodes_stub; 214 void (*acpi_print_tree)(struct acpi_devnode *, uint32_t) = acpi_print_tree_stub; 215 void (*acpi_print_dev)(const char *) = acpi_print_dev_stub; 216 void (*acpi_wmidump)(void *) = acpi_wmidump_stub; 217 218 int acpi_verbose_loaded = 0; 219 220 /* 221 * Support for ACPIVERBOSE. 222 */ 223 void 224 acpi_null(void) 225 { 226 /* Nothing to do. */ 227 } 228 229 void 230 acpi_load_verbose(void) 231 { 232 if (acpi_verbose_loaded) 233 return; 234 235 mutex_enter(&module_lock); 236 if (module_autoload("acpiverbose", MODULE_CLASS_MISC) == 0) 237 acpi_verbose_loaded++; 238 mutex_exit(&module_lock); 239 } 240 241 void 242 acpi_print_devnodes_stub(struct acpi_softc *sc) 243 { 244 acpi_load_verbose(); 245 if (acpi_verbose_loaded) 246 acpi_print_devnodes(sc); 247 } 248 249 void 250 acpi_print_tree_stub(struct acpi_devnode *ad, uint32_t level) 251 { 252 acpi_load_verbose(); 253 if (acpi_verbose_loaded) 254 acpi_print_tree(ad, level); 255 } 256 257 void 258 acpi_print_dev_stub(const char *pnpstr) 259 { 260 acpi_load_verbose(); 261 if (acpi_verbose_loaded) 262 acpi_print_dev(pnpstr); 263 } 264 265 void 266 acpi_wmidump_stub(void *arg) 267 { 268 acpi_load_verbose(); 269 if (acpi_verbose_loaded) 270 acpi_wmidump(arg); 271 } 272 273 CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 274 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 275 276 /* 277 * Probe for ACPI support. 278 * 279 * This is called by the machine-dependent ACPI front-end. 280 * Note: this is not an autoconfiguration interface function. 281 */ 282 int 283 acpi_probe(void) 284 { 285 ACPI_TABLE_HEADER *rsdt; 286 const char *func; 287 static int once; 288 bool initialized; 289 ACPI_STATUS rv; 290 291 if (once != 0) 292 panic("%s: already probed", __func__); 293 294 once = 1; 295 func = NULL; 296 initialized = false; 297 298 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 299 300 /* 301 * Start up ACPICA. 302 */ 303 #ifdef ACPI_DEBUGGER 304 if (acpi_dbgr & ACPI_DBGR_INIT) 305 acpi_osd_debugger(); 306 #endif 307 308 CTASSERT(TRUE == true); 309 CTASSERT(FALSE == false); 310 311 AcpiGbl_AllMethodsSerialized = false; 312 AcpiGbl_EnableInterpreterSlack = true; 313 314 rv = AcpiInitializeSubsystem(); 315 316 if (ACPI_SUCCESS(rv)) 317 initialized = true; 318 else { 319 func = "AcpiInitializeSubsystem()"; 320 goto fail; 321 } 322 323 /* 324 * Allocate space for RSDT/XSDT and DSDT, 325 * but allow resizing if more tables exist. 326 */ 327 rv = AcpiInitializeTables(NULL, 2, true); 328 329 if (ACPI_FAILURE(rv)) { 330 func = "AcpiInitializeTables()"; 331 goto fail; 332 } 333 334 #ifdef ACPI_DEBUGGER 335 if (acpi_dbgr & ACPI_DBGR_TABLES) 336 acpi_osd_debugger(); 337 #endif 338 339 rv = AcpiLoadTables(); 340 341 if (ACPI_FAILURE(rv)) { 342 func = "AcpiLoadTables()"; 343 goto fail; 344 } 345 346 rsdt = acpi_map_rsdt(); 347 348 if (rsdt == NULL) { 349 func = "acpi_map_rsdt()"; 350 rv = AE_ERROR; 351 goto fail; 352 } 353 354 if (acpi_force_load == 0 && (acpi_find_quirks() & ACPI_QUIRK_BROKEN)) { 355 aprint_normal("ACPI: BIOS is listed as broken:\n"); 356 aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 357 "AslId <%4.4s,%08x>\n", 358 rsdt->OemId, rsdt->OemTableId, 359 rsdt->OemRevision, 360 rsdt->AslCompilerId, 361 rsdt->AslCompilerRevision); 362 aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n"); 363 acpi_unmap_rsdt(rsdt); 364 AcpiTerminate(); 365 return 0; 366 } 367 368 acpi_unmap_rsdt(rsdt); 369 370 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 371 372 if (ACPI_FAILURE(rv)) { 373 func = "AcpiEnableSubsystem()"; 374 goto fail; 375 } 376 377 /* 378 * Looks like we have ACPI! 379 */ 380 return 1; 381 382 fail: 383 KASSERT(rv != AE_OK); 384 KASSERT(func != NULL); 385 386 aprint_error("%s: failed to probe ACPI: %s\n", 387 func, AcpiFormatException(rv)); 388 389 if (initialized != false) 390 (void)AcpiTerminate(); 391 392 return 0; 393 } 394 395 int 396 acpi_check(device_t parent, const char *ifattr) 397 { 398 return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); 399 } 400 401 /* 402 * Autoconfiguration. 403 */ 404 static int 405 acpi_match(device_t parent, cfdata_t match, void *aux) 406 { 407 /* 408 * XXX: Nada; MD code has called acpi_probe(). 409 */ 410 return 1; 411 } 412 413 static int 414 acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 415 { 416 struct cfattach *ca; 417 418 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 419 420 return (ca == &acpi_ca); 421 } 422 423 static void 424 acpi_attach(device_t parent, device_t self, void *aux) 425 { 426 struct acpi_softc *sc = device_private(self); 427 struct acpibus_attach_args *aa = aux; 428 ACPI_TABLE_HEADER *rsdt; 429 ACPI_STATUS rv; 430 431 aprint_naive("\n"); 432 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 433 434 if (acpi_softc != NULL) 435 panic("%s: already attached", __func__); 436 437 rsdt = acpi_map_rsdt(); 438 439 if (rsdt == NULL) 440 aprint_error_dev(self, "X/RSDT: Not found\n"); 441 else { 442 aprint_verbose_dev(self, 443 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 444 rsdt->OemId, rsdt->OemTableId, 445 rsdt->OemRevision, 446 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 447 } 448 449 acpi_unmap_rsdt(rsdt); 450 451 sc->sc_dev = self; 452 sc->sc_root = NULL; 453 454 sc->sc_sleepstate = ACPI_STATE_S0; 455 sc->sc_quirks = acpi_find_quirks(); 456 457 sysmon_power_settype("acpi"); 458 459 sc->sc_iot = aa->aa_iot; 460 sc->sc_memt = aa->aa_memt; 461 sc->sc_pc = aa->aa_pc; 462 sc->sc_pciflags = aa->aa_pciflags; 463 sc->sc_ic = aa->aa_ic; 464 465 SIMPLEQ_INIT(&sc->ad_head); 466 467 acpi_softc = sc; 468 469 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) 470 aprint_error_dev(self, "couldn't establish power handler\n"); 471 472 /* 473 * Bring ACPI on-line. 474 */ 475 #ifdef ACPI_DEBUGGER 476 if (acpi_dbgr & ACPI_DBGR_ENABLE) 477 acpi_osd_debugger(); 478 #endif 479 480 #define ACPI_ENABLE_PHASE1 \ 481 (ACPI_NO_HANDLER_INIT | ACPI_NO_EVENT_INIT) 482 #define ACPI_ENABLE_PHASE2 \ 483 (ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE | \ 484 ACPI_NO_ADDRESS_SPACE_INIT) 485 486 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE1); 487 488 if (ACPI_FAILURE(rv)) 489 goto fail; 490 491 acpi_md_callback(); 492 493 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE2); 494 495 if (ACPI_FAILURE(rv)) 496 goto fail; 497 498 /* 499 * Early EC handler initialization if ECDT table is available. 500 */ 501 config_found_ia(self, "acpiecdtbus", aa, NULL); 502 503 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 504 505 if (ACPI_FAILURE(rv)) 506 goto fail; 507 508 /* 509 * Install global notify handlers. 510 */ 511 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 512 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 513 514 if (ACPI_FAILURE(rv)) 515 goto fail; 516 517 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 518 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 519 520 if (ACPI_FAILURE(rv)) 521 goto fail; 522 523 acpi_active = 1; 524 525 /* Show SCI interrupt. */ 526 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 527 AcpiGbl_FADT.SciInterrupt); 528 529 /* 530 * Install fixed-event handlers. 531 */ 532 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 533 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 534 535 acpitimer_init(); 536 537 #ifdef ACPI_DEBUGGER 538 if (acpi_dbgr & ACPI_DBGR_PROBE) 539 acpi_osd_debugger(); 540 #endif 541 542 /* 543 * Scan the namespace and build our device tree. 544 */ 545 acpi_build_tree(sc); 546 acpi_sleep_init(sc); 547 548 #ifdef ACPI_DEBUGGER 549 if (acpi_dbgr & ACPI_DBGR_RUNNING) 550 acpi_osd_debugger(); 551 #endif 552 553 #ifdef ACPI_DEBUG 554 acpi_debug_init(); 555 #endif 556 557 return; 558 559 fail: 560 KASSERT(rv != AE_OK); 561 562 aprint_error("%s: failed to initialize ACPI: %s\n", 563 __func__, AcpiFormatException(rv)); 564 } 565 566 /* 567 * XXX: This is incomplete. 568 */ 569 static int 570 acpi_detach(device_t self, int flags) 571 { 572 struct acpi_softc *sc = device_private(self); 573 ACPI_STATUS rv; 574 int rc; 575 576 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 577 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 578 579 if (ACPI_FAILURE(rv)) 580 return EBUSY; 581 582 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 583 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 584 585 if (ACPI_FAILURE(rv)) 586 return EBUSY; 587 588 if ((rc = config_detach_children(self, flags)) != 0) 589 return rc; 590 591 if ((rc = acpitimer_detach()) != 0) 592 return rc; 593 594 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 595 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 596 597 pmf_device_deregister(self); 598 599 acpi_softc = NULL; 600 601 return 0; 602 } 603 604 /* 605 * XXX: Need to reclaim any resources? Yes. 606 */ 607 static void 608 acpi_childdet(device_t self, device_t child) 609 { 610 struct acpi_softc *sc = device_private(self); 611 struct acpi_devnode *ad; 612 613 if (sc->sc_apmbus == child) 614 sc->sc_apmbus = NULL; 615 616 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 617 618 if (ad->ad_device == child) 619 ad->ad_device = NULL; 620 } 621 } 622 623 static bool 624 acpi_suspend(device_t dv, const pmf_qual_t *qual) 625 { 626 627 acpi_suspended = 1; 628 629 return true; 630 } 631 632 static bool 633 acpi_resume(device_t dv, const pmf_qual_t *qual) 634 { 635 636 acpi_suspended = 0; 637 638 return true; 639 } 640 641 /* 642 * Namespace scan. 643 */ 644 static void 645 acpi_build_tree(struct acpi_softc *sc) 646 { 647 struct acpi_walkcontext awc; 648 649 /* 650 * Get the root scope handles. 651 */ 652 KASSERT(__arraycount(acpi_scopes) == 4); 653 654 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 655 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 656 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 657 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 658 659 /* 660 * Make the root node. 661 */ 662 awc.aw_sc = sc; 663 awc.aw_parent = NULL; 664 665 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 666 667 KASSERT(sc->sc_root == NULL); 668 KASSERT(awc.aw_parent != NULL); 669 670 sc->sc_root = awc.aw_parent; 671 672 /* 673 * Build the internal namespace. 674 */ 675 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 676 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 677 678 /* 679 * Scan the internal namespace. 680 */ 681 acpi_rescan1(sc, NULL, NULL); 682 acpi_rescan_capabilities(sc); 683 684 (void)acpi_pcidev_scan(sc->sc_root); 685 686 acpi_print_devnodes(sc); 687 acpi_print_tree(sc->sc_root, 0); 688 } 689 690 static ACPI_STATUS 691 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 692 void *context, void **status) 693 { 694 struct acpi_walkcontext *awc = context; 695 struct acpi_softc *sc = awc->aw_sc; 696 struct acpi_devnode *ad; 697 ACPI_DEVICE_INFO *devinfo; 698 ACPI_OBJECT_TYPE type; 699 ACPI_NAME_UNION *anu; 700 ACPI_STATUS rv; 701 int clear, i; 702 703 rv = AcpiGetObjectInfo(handle, &devinfo); 704 705 if (ACPI_FAILURE(rv)) 706 return AE_OK; /* Do not terminate the walk. */ 707 708 type = devinfo->Type; 709 710 switch (type) { 711 712 case ACPI_TYPE_DEVICE: 713 714 #ifdef ACPI_ACTIVATE_DEV 715 acpi_activate_device(handle, &devinfo); 716 #endif 717 718 case ACPI_TYPE_PROCESSOR: 719 case ACPI_TYPE_THERMAL: 720 case ACPI_TYPE_POWER: 721 722 ad = malloc(sizeof(*ad), M_ACPI, M_NOWAIT | M_ZERO); 723 724 if (ad == NULL) 725 return AE_NO_MEMORY; 726 727 ad->ad_device = NULL; 728 ad->ad_notify = NULL; 729 ad->ad_pciinfo = NULL; 730 731 ad->ad_type = type; 732 ad->ad_handle = handle; 733 ad->ad_devinfo = devinfo; 734 735 ad->ad_root = sc->sc_dev; 736 ad->ad_parent = awc->aw_parent; 737 738 anu = (ACPI_NAME_UNION *)&devinfo->Name; 739 ad->ad_name[4] = '\0'; 740 741 for (i = 3, clear = 0; i >= 0; i--) { 742 743 if (clear == 0 && anu->Ascii[i] == '_') 744 ad->ad_name[i] = '\0'; 745 else { 746 ad->ad_name[i] = anu->Ascii[i]; 747 clear = 1; 748 } 749 } 750 751 if (ad->ad_name[0] == '\0') 752 ad->ad_name[0] = '_'; 753 754 SIMPLEQ_INIT(&ad->ad_child_head); 755 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 756 757 acpi_set_node(ad); 758 759 if (ad->ad_parent != NULL) { 760 761 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 762 ad, ad_child_list); 763 } 764 765 awc->aw_parent = ad; 766 } 767 768 return AE_OK; 769 } 770 771 static ACPI_STATUS 772 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 773 void *context, void **status) 774 { 775 struct acpi_walkcontext *awc = context; 776 777 KASSERT(awc != NULL); 778 KASSERT(awc->aw_parent != NULL); 779 780 if (handle == awc->aw_parent->ad_handle) 781 awc->aw_parent = awc->aw_parent->ad_parent; 782 783 return AE_OK; 784 } 785 786 #ifdef ACPI_ACTIVATE_DEV 787 static void 788 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 789 { 790 static const int valid = ACPI_VALID_STA | ACPI_VALID_HID; 791 ACPI_DEVICE_INFO *newdi; 792 ACPI_STATUS rv; 793 uint32_t old; 794 795 /* 796 * If the device is valid and present, 797 * but not enabled, try to activate it. 798 */ 799 if (((*di)->Valid & valid) != valid) 800 return; 801 802 old = (*di)->CurrentStatus; 803 804 if ((old & (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED)) != 805 ACPI_STA_DEVICE_PRESENT) 806 return; 807 808 rv = acpi_allocate_resources(handle); 809 810 if (ACPI_FAILURE(rv)) 811 goto fail; 812 813 rv = AcpiGetObjectInfo(handle, &newdi); 814 815 if (ACPI_FAILURE(rv)) 816 goto fail; 817 818 ACPI_FREE(*di); 819 *di = newdi; 820 821 aprint_verbose_dev(acpi_softc->sc_dev, 822 "%s activated, STA 0x%08X -> STA 0x%08X\n", 823 (*di)->HardwareId.String, old, (*di)->CurrentStatus); 824 825 return; 826 827 fail: 828 aprint_error_dev(acpi_softc->sc_dev, "failed to " 829 "activate %s\n", (*di)->HardwareId.String); 830 } 831 832 /* 833 * XXX: This very incomplete. 834 */ 835 ACPI_STATUS 836 acpi_allocate_resources(ACPI_HANDLE handle) 837 { 838 ACPI_BUFFER bufp, bufc, bufn; 839 ACPI_RESOURCE *resp, *resc, *resn; 840 ACPI_RESOURCE_IRQ *irq; 841 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 842 ACPI_STATUS rv; 843 uint delta; 844 845 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 846 if (ACPI_FAILURE(rv)) 847 goto out; 848 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 849 if (ACPI_FAILURE(rv)) { 850 goto out1; 851 } 852 853 bufn.Length = 1000; 854 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 855 resp = bufp.Pointer; 856 resc = bufc.Pointer; 857 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 858 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 859 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 860 resp = ACPI_NEXT_RESOURCE(resp); 861 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 862 break; 863 /* Found identical Id */ 864 resn->Type = resc->Type; 865 switch (resc->Type) { 866 case ACPI_RESOURCE_TYPE_IRQ: 867 memcpy(&resn->Data, &resp->Data, 868 sizeof(ACPI_RESOURCE_IRQ)); 869 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 870 irq->Interrupts[0] = 871 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 872 Interrupts[irq->InterruptCount-1]; 873 irq->InterruptCount = 1; 874 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 875 break; 876 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 877 memcpy(&resn->Data, &resp->Data, 878 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 879 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 880 #if 0 881 /* 882 * XXX: Not duplicating the interrupt logic above 883 * because its not clear what it accomplishes. 884 */ 885 xirq->Interrupts[0] = 886 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 887 Interrupts[irq->NumberOfInterrupts-1]; 888 xirq->NumberOfInterrupts = 1; 889 #endif 890 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 891 break; 892 case ACPI_RESOURCE_TYPE_IO: 893 memcpy(&resn->Data, &resp->Data, 894 sizeof(ACPI_RESOURCE_IO)); 895 resn->Length = resp->Length; 896 break; 897 default: 898 aprint_error_dev(acpi_softc->sc_dev, 899 "%s: invalid type %u\n", __func__, resc->Type); 900 rv = AE_BAD_DATA; 901 goto out2; 902 } 903 resc = ACPI_NEXT_RESOURCE(resc); 904 resn = ACPI_NEXT_RESOURCE(resn); 905 resp = ACPI_NEXT_RESOURCE(resp); 906 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 907 if (delta >= 908 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 909 bufn.Length *= 2; 910 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 911 M_ACPI, M_WAITOK); 912 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 913 delta); 914 } 915 } 916 917 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 918 aprint_error_dev(acpi_softc->sc_dev, 919 "%s: resc not exhausted\n", __func__); 920 rv = AE_BAD_DATA; 921 goto out3; 922 } 923 924 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 925 rv = AcpiSetCurrentResources(handle, &bufn); 926 927 if (ACPI_FAILURE(rv)) 928 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 929 "resources: %s\n", __func__, AcpiFormatException(rv)); 930 931 out3: 932 free(bufn.Pointer, M_ACPI); 933 out2: 934 ACPI_FREE(bufc.Pointer); 935 out1: 936 ACPI_FREE(bufp.Pointer); 937 out: 938 return rv; 939 } 940 #endif /* ACPI_ACTIVATE_DEV */ 941 942 /* 943 * Device attachment. 944 */ 945 static int 946 acpi_rescan(device_t self, const char *ifattr, const int *locators) 947 { 948 struct acpi_softc *sc = device_private(self); 949 950 acpi_rescan1(sc, ifattr, locators); 951 952 return 0; 953 } 954 955 static void 956 acpi_rescan1(struct acpi_softc *sc, const char *ifattr, const int *locators) 957 { 958 959 if (ifattr_match(ifattr, "acpinodebus")) 960 acpi_rescan_nodes(sc); 961 962 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 963 sc->sc_apmbus = config_found_ia(sc->sc_dev, 964 "acpiapmbus", NULL, NULL); 965 } 966 967 static void 968 acpi_rescan_nodes(struct acpi_softc *sc) 969 { 970 struct acpi_attach_args aa; 971 struct acpi_devnode *ad; 972 ACPI_DEVICE_INFO *di; 973 974 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 975 976 if (ad->ad_device != NULL) 977 continue; 978 979 /* 980 * There is a bug in ACPICA: it defines the type 981 * of the scopes incorrectly for its own reasons. 982 */ 983 if (acpi_is_scope(ad) != false) 984 continue; 985 986 di = ad->ad_devinfo; 987 988 /* 989 * We only attach devices which are present, enabled, and 990 * functioning properly. However, if a device is enabled, 991 * it is decoding resources and we should claim these, 992 * if possible. This requires changes to bus_space(9). 993 */ 994 if (di->Type == ACPI_TYPE_DEVICE) { 995 996 if ((di->Valid & ACPI_VALID_STA) != 0 && 997 (di->CurrentStatus & ACPI_STA_OK) != ACPI_STA_OK) 998 continue; 999 } 1000 1001 /* 1002 * The same problem as above. As for example 1003 * thermal zones and power resources do not 1004 * have a valid HID, only evaluate devices. 1005 */ 1006 if (di->Type == ACPI_TYPE_DEVICE && 1007 (di->Valid & ACPI_VALID_HID) == 0) 1008 continue; 1009 1010 /* 1011 * Handled internally. 1012 */ 1013 if (di->Type == ACPI_TYPE_POWER || 1014 di->Type == ACPI_TYPE_PROCESSOR) 1015 continue; 1016 1017 /* 1018 * Skip ignored HIDs. 1019 */ 1020 if (acpi_match_hid(di, acpi_ignored_ids)) 1021 continue; 1022 1023 aa.aa_node = ad; 1024 aa.aa_iot = sc->sc_iot; 1025 aa.aa_memt = sc->sc_memt; 1026 aa.aa_pc = sc->sc_pc; 1027 aa.aa_pciflags = sc->sc_pciflags; 1028 aa.aa_ic = sc->sc_ic; 1029 1030 ad->ad_device = config_found_ia(sc->sc_dev, 1031 "acpinodebus", &aa, acpi_print); 1032 } 1033 } 1034 1035 static void 1036 acpi_rescan_capabilities(struct acpi_softc *sc) 1037 { 1038 struct acpi_devnode *ad; 1039 ACPI_HANDLE tmp; 1040 ACPI_STATUS rv; 1041 1042 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1043 1044 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 1045 continue; 1046 1047 /* 1048 * Scan power resource capabilities. 1049 * 1050 * If any power states are supported, 1051 * at least _PR0 and _PR3 must be present. 1052 */ 1053 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 1054 1055 if (ACPI_SUCCESS(rv)) { 1056 ad->ad_flags |= ACPI_DEVICE_POWER; 1057 acpi_power_add(ad); 1058 } 1059 1060 /* 1061 * Scan wake-up capabilities. 1062 */ 1063 rv = AcpiGetHandle(ad->ad_handle, "_PRW", &tmp); 1064 1065 if (ACPI_SUCCESS(rv)) { 1066 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 1067 acpi_wakedev_add(ad); 1068 } 1069 } 1070 } 1071 1072 static int 1073 acpi_print(void *aux, const char *pnp) 1074 { 1075 struct acpi_attach_args *aa = aux; 1076 ACPI_STATUS rv; 1077 1078 if (pnp) { 1079 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1080 char *pnpstr = 1081 aa->aa_node->ad_devinfo->HardwareId.String; 1082 ACPI_BUFFER buf; 1083 1084 aprint_normal("%s (%s) ", aa->aa_node->ad_name, 1085 pnpstr); 1086 1087 rv = acpi_eval_struct(aa->aa_node->ad_handle, 1088 "_STR", &buf); 1089 if (ACPI_SUCCESS(rv)) { 1090 ACPI_OBJECT *obj = buf.Pointer; 1091 switch (obj->Type) { 1092 case ACPI_TYPE_STRING: 1093 aprint_normal("[%s] ", obj->String.Pointer); 1094 break; 1095 case ACPI_TYPE_BUFFER: 1096 aprint_normal("buffer %p ", obj->Buffer.Pointer); 1097 break; 1098 default: 1099 aprint_normal("type %u ",obj->Type); 1100 break; 1101 } 1102 ACPI_FREE(buf.Pointer); 1103 } 1104 else 1105 acpi_print_dev(pnpstr); 1106 1107 aprint_normal("at %s", pnp); 1108 } else if (aa->aa_node->ad_devinfo->Type != ACPI_TYPE_DEVICE) { 1109 aprint_normal("%s (ACPI Object Type '%s' " 1110 "[0x%02x]) ", aa->aa_node->ad_name, 1111 AcpiUtGetTypeName(aa->aa_node->ad_devinfo->Type), 1112 aa->aa_node->ad_devinfo->Type); 1113 aprint_normal("at %s", pnp); 1114 } else 1115 return 0; 1116 } else { 1117 aprint_normal(" (%s", aa->aa_node->ad_name); 1118 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1119 aprint_normal(", %s", aa->aa_node->ad_devinfo->HardwareId.String); 1120 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_UID) { 1121 const char *uid; 1122 1123 uid = aa->aa_node->ad_devinfo->UniqueId.String; 1124 if (uid[0] == '\0') 1125 uid = "<null>"; 1126 aprint_normal("-%s", uid); 1127 } 1128 } 1129 aprint_normal(")"); 1130 } 1131 1132 return UNCONF; 1133 } 1134 1135 /* 1136 * Notify. 1137 */ 1138 static void 1139 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1140 { 1141 struct acpi_softc *sc = acpi_softc; 1142 struct acpi_devnode *ad; 1143 1144 KASSERT(sc != NULL); 1145 KASSERT(aux == NULL); 1146 KASSERT(acpi_active != 0); 1147 1148 if (acpi_suspended != 0) 1149 return; 1150 1151 /* 1152 * System: 0x00 - 0x7F. 1153 * Device: 0x80 - 0xFF. 1154 */ 1155 switch (event) { 1156 1157 case ACPI_NOTIFY_BUS_CHECK: 1158 case ACPI_NOTIFY_DEVICE_CHECK: 1159 case ACPI_NOTIFY_DEVICE_WAKE: 1160 case ACPI_NOTIFY_EJECT_REQUEST: 1161 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1162 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1163 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1164 case ACPI_NOTIFY_POWER_FAULT: 1165 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1166 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1167 case ACPI_NOTIFY_RESERVED: 1168 case ACPI_NOTIFY_LOCALITY_UPDATE: 1169 break; 1170 } 1171 1172 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1173 "%s (%p)\n", event, acpi_name(handle), handle)); 1174 1175 /* 1176 * We deliver notifications only to drivers 1177 * that have been succesfully attached and 1178 * that have registered a handler with us. 1179 * The opaque pointer is always the device_t. 1180 */ 1181 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1182 1183 if (ad->ad_device == NULL) 1184 continue; 1185 1186 if (ad->ad_notify == NULL) 1187 continue; 1188 1189 if (ad->ad_handle != handle) 1190 continue; 1191 1192 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1193 1194 return; 1195 } 1196 1197 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1198 "for %s (%p)\n", event, acpi_name(handle), handle); 1199 } 1200 1201 bool 1202 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1203 { 1204 struct acpi_softc *sc = acpi_softc; 1205 1206 KASSERT(sc != NULL); 1207 KASSERT(acpi_active != 0); 1208 1209 if (acpi_suspended != 0) 1210 goto fail; 1211 1212 if (ad == NULL || notify == NULL) 1213 goto fail; 1214 1215 ad->ad_notify = notify; 1216 1217 return true; 1218 1219 fail: 1220 aprint_error_dev(sc->sc_dev, "failed to register notify " 1221 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1222 1223 return false; 1224 } 1225 1226 void 1227 acpi_deregister_notify(struct acpi_devnode *ad) 1228 { 1229 1230 ad->ad_notify = NULL; 1231 } 1232 1233 /* 1234 * Fixed buttons. 1235 */ 1236 static void 1237 acpi_register_fixed_button(struct acpi_softc *sc, int event) 1238 { 1239 struct sysmon_pswitch *smpsw; 1240 ACPI_STATUS rv; 1241 int type; 1242 1243 switch (event) { 1244 1245 case ACPI_EVENT_POWER_BUTTON: 1246 1247 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1248 return; 1249 1250 type = PSWITCH_TYPE_POWER; 1251 smpsw = &sc->sc_smpsw_power; 1252 break; 1253 1254 case ACPI_EVENT_SLEEP_BUTTON: 1255 1256 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1257 return; 1258 1259 type = PSWITCH_TYPE_SLEEP; 1260 smpsw = &sc->sc_smpsw_sleep; 1261 break; 1262 1263 default: 1264 rv = AE_TYPE; 1265 goto fail; 1266 } 1267 1268 smpsw->smpsw_type = type; 1269 smpsw->smpsw_name = device_xname(sc->sc_dev); 1270 1271 if (sysmon_pswitch_register(smpsw) != 0) { 1272 rv = AE_ERROR; 1273 goto fail; 1274 } 1275 1276 rv = AcpiInstallFixedEventHandler(event, 1277 acpi_fixed_button_handler, smpsw); 1278 1279 if (ACPI_FAILURE(rv)) { 1280 sysmon_pswitch_unregister(smpsw); 1281 goto fail; 1282 } 1283 1284 aprint_debug_dev(sc->sc_dev, "fixed %s button present\n", 1285 (type != ACPI_EVENT_SLEEP_BUTTON) ? "power" : "sleep"); 1286 1287 return; 1288 1289 fail: 1290 aprint_error_dev(sc->sc_dev, "failed to register " 1291 "fixed event: %s\n", AcpiFormatException(rv)); 1292 } 1293 1294 static void 1295 acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1296 { 1297 struct sysmon_pswitch *smpsw; 1298 ACPI_STATUS rv; 1299 1300 switch (event) { 1301 1302 case ACPI_EVENT_POWER_BUTTON: 1303 smpsw = &sc->sc_smpsw_power; 1304 1305 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1306 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1307 return; 1308 } 1309 1310 break; 1311 1312 case ACPI_EVENT_SLEEP_BUTTON: 1313 smpsw = &sc->sc_smpsw_sleep; 1314 1315 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1316 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1317 return; 1318 } 1319 1320 break; 1321 1322 default: 1323 rv = AE_TYPE; 1324 goto fail; 1325 } 1326 1327 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1328 1329 if (ACPI_SUCCESS(rv)) { 1330 sysmon_pswitch_unregister(smpsw); 1331 return; 1332 } 1333 1334 fail: 1335 aprint_error_dev(sc->sc_dev, "failed to deregister " 1336 "fixed event: %s\n", AcpiFormatException(rv)); 1337 } 1338 1339 static uint32_t 1340 acpi_fixed_button_handler(void *context) 1341 { 1342 static const int handler = OSL_NOTIFY_HANDLER; 1343 struct sysmon_pswitch *smpsw = context; 1344 1345 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1346 1347 return ACPI_INTERRUPT_HANDLED; 1348 } 1349 1350 static void 1351 acpi_fixed_button_pressed(void *context) 1352 { 1353 struct sysmon_pswitch *smpsw = context; 1354 1355 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1356 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1357 "power" : "sleep")); 1358 1359 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1360 } 1361 1362 /* 1363 * Sleep. 1364 */ 1365 static void 1366 acpi_sleep_init(struct acpi_softc *sc) 1367 { 1368 uint8_t a, b, i; 1369 ACPI_STATUS rv; 1370 1371 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1372 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1373 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1374 1375 /* 1376 * Evaluate supported sleep states. 1377 */ 1378 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1379 1380 rv = AcpiGetSleepTypeData(i, &a, &b); 1381 1382 if (ACPI_SUCCESS(rv)) 1383 sc->sc_sleepstates |= __BIT(i); 1384 } 1385 } 1386 1387 void 1388 acpi_enter_sleep_state(struct acpi_softc *sc, int state) 1389 { 1390 ACPI_STATUS rv; 1391 int err; 1392 1393 if (state == sc->sc_sleepstate) 1394 return; 1395 1396 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1397 1398 switch (state) { 1399 1400 case ACPI_STATE_S0: 1401 sc->sc_sleepstate = ACPI_STATE_S0; 1402 return; 1403 1404 case ACPI_STATE_S1: 1405 case ACPI_STATE_S2: 1406 case ACPI_STATE_S3: 1407 case ACPI_STATE_S4: 1408 1409 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1410 aprint_error_dev(sc->sc_dev, "sleep state " 1411 "S%d is not available\n", state); 1412 return; 1413 } 1414 1415 /* 1416 * Evaluate the _TTS method. This should be done before 1417 * pmf_system_suspend(9) and the evaluation of _PTS. 1418 * We should also re-evaluate this once we return to 1419 * S0 or if we abort the sleep state transition in the 1420 * middle (see ACPI 3.0, section 7.3.6). In reality, 1421 * however, the _TTS method is seldom seen in the field. 1422 */ 1423 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1424 1425 if (ACPI_SUCCESS(rv)) 1426 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1427 1428 if (state != ACPI_STATE_S1 && 1429 pmf_system_suspend(PMF_Q_NONE) != true) { 1430 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1431 break; 1432 } 1433 1434 /* 1435 * This will evaluate the _PTS and _SST methods, 1436 * but unlike the documentation claims, not _GTS, 1437 * which is evaluated in AcpiEnterSleepState(). 1438 * This must be called with interrupts enabled. 1439 */ 1440 rv = AcpiEnterSleepStatePrep(state); 1441 1442 if (ACPI_FAILURE(rv)) { 1443 aprint_error_dev(sc->sc_dev, "failed to prepare " 1444 "S%d: %s\n", state, AcpiFormatException(rv)); 1445 break; 1446 } 1447 1448 /* 1449 * After the _PTS method has been evaluated, we can 1450 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1451 */ 1452 acpi_wakedev_commit(sc, state); 1453 1454 sc->sc_sleepstate = state; 1455 1456 if (state == ACPI_STATE_S1) { 1457 1458 /* Just enter the state. */ 1459 acpi_md_OsDisableInterrupt(); 1460 rv = AcpiEnterSleepState(state); 1461 1462 if (ACPI_FAILURE(rv)) 1463 aprint_error_dev(sc->sc_dev, "failed to " 1464 "enter S1: %s\n", AcpiFormatException(rv)); 1465 1466 (void)AcpiLeaveSleepState(state); 1467 1468 } else { 1469 1470 err = acpi_md_sleep(state); 1471 1472 if (state == ACPI_STATE_S4) 1473 AcpiEnable(); 1474 1475 pmf_system_bus_resume(PMF_Q_NONE); 1476 (void)AcpiLeaveSleepState(state); 1477 pmf_system_resume(PMF_Q_NONE); 1478 } 1479 1480 break; 1481 1482 case ACPI_STATE_S5: 1483 1484 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1485 1486 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1487 1488 if (ACPI_FAILURE(rv)) { 1489 aprint_error_dev(sc->sc_dev, "failed to prepare " 1490 "S%d: %s\n", state, AcpiFormatException(rv)); 1491 break; 1492 } 1493 1494 DELAY(1000000); 1495 1496 sc->sc_sleepstate = state; 1497 acpi_md_OsDisableInterrupt(); 1498 1499 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1500 1501 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1502 1503 break; 1504 } 1505 1506 sc->sc_sleepstate = ACPI_STATE_S0; 1507 1508 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1509 } 1510 1511 /* 1512 * Sysctl. 1513 */ 1514 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1515 { 1516 const struct sysctlnode *mnode, *rnode; 1517 int err; 1518 1519 err = sysctl_createv(clog, 0, NULL, &rnode, 1520 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", 1521 NULL, NULL, 0, NULL, 0, 1522 CTL_HW, CTL_EOL); 1523 1524 if (err != 0) 1525 return; 1526 1527 err = sysctl_createv(clog, 0, &rnode, &rnode, 1528 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1529 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1530 NULL, 0, NULL, 0, 1531 CTL_CREATE, CTL_EOL); 1532 1533 if (err != 0) 1534 return; 1535 1536 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1537 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1538 "root", SYSCTL_DESCR("ACPI root pointer"), 1539 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1540 CTL_CREATE, CTL_EOL); 1541 1542 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1543 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1544 "supported_states", SYSCTL_DESCR("Supported system states"), 1545 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1546 CTL_CREATE, CTL_EOL); 1547 1548 err = sysctl_createv(NULL, 0, NULL, &mnode, 1549 CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep", 1550 NULL, NULL, 0, NULL, 0, 1551 CTL_MACHDEP, CTL_EOL); 1552 1553 if (err == 0) { 1554 1555 (void)sysctl_createv(NULL, 0, &mnode, NULL, 1556 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1557 "sleep_state", SYSCTL_DESCR("System sleep state"), 1558 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1559 CTL_CREATE, CTL_EOL); 1560 } 1561 1562 err = sysctl_createv(clog, 0, &rnode, &rnode, 1563 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1564 "stat", SYSCTL_DESCR("ACPI statistics"), 1565 NULL, 0, NULL, 0, 1566 CTL_CREATE, CTL_EOL); 1567 1568 if (err != 0) 1569 return; 1570 1571 (void)sysctl_createv(clog, 0, &rnode, NULL, 1572 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1573 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1574 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1575 CTL_CREATE, CTL_EOL); 1576 1577 (void)sysctl_createv(clog, 0, &rnode, NULL, 1578 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1579 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1580 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1581 CTL_CREATE, CTL_EOL); 1582 1583 (void)sysctl_createv(clog, 0, &rnode, NULL, 1584 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1585 "fixed", SYSCTL_DESCR("Number of fixed events"), 1586 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1587 CTL_CREATE, CTL_EOL); 1588 1589 (void)sysctl_createv(clog, 0, &rnode, NULL, 1590 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1591 "method", SYSCTL_DESCR("Number of methods executed"), 1592 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1593 CTL_CREATE, CTL_EOL); 1594 1595 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1596 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1597 } 1598 1599 static int 1600 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1601 { 1602 struct sysctlnode node; 1603 uint64_t t; 1604 int err, i; 1605 1606 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1607 t += AcpiFixedEventCount[i]; 1608 1609 node = *rnode; 1610 node.sysctl_data = &t; 1611 1612 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1613 1614 if (err || newp == NULL) 1615 return err; 1616 1617 return 0; 1618 } 1619 1620 static int 1621 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1622 { 1623 struct acpi_softc *sc = acpi_softc; 1624 struct sysctlnode node; 1625 int err, t; 1626 1627 if (acpi_softc == NULL) 1628 return ENOSYS; 1629 1630 node = *rnode; 1631 t = sc->sc_sleepstate; 1632 node.sysctl_data = &t; 1633 1634 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1635 1636 if (err || newp == NULL) 1637 return err; 1638 1639 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1640 return EINVAL; 1641 1642 acpi_enter_sleep_state(sc, t); 1643 1644 return 0; 1645 } 1646 1647 static int 1648 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1649 { 1650 struct acpi_softc *sc = acpi_softc; 1651 struct sysctlnode node; 1652 char t[3 * 6 + 1]; 1653 int err; 1654 1655 if (acpi_softc == NULL) 1656 return ENOSYS; 1657 1658 (void)memset(t, '\0', sizeof(t)); 1659 1660 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1661 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1662 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1663 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1664 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1665 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1666 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1667 1668 node = *rnode; 1669 node.sysctl_data = &t; 1670 1671 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1672 1673 if (err || newp == NULL) 1674 return err; 1675 1676 return 0; 1677 } 1678 1679 /* 1680 * Miscellaneous. 1681 */ 1682 static bool 1683 acpi_is_scope(struct acpi_devnode *ad) 1684 { 1685 int i; 1686 1687 /* 1688 * Return true if the node is a root scope. 1689 */ 1690 if (ad->ad_parent == NULL) 1691 return false; 1692 1693 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1694 return false; 1695 1696 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1697 1698 if (acpi_scopes[i] == NULL) 1699 continue; 1700 1701 if (ad->ad_handle == acpi_scopes[i]) 1702 return true; 1703 } 1704 1705 return false; 1706 } 1707 1708 ACPI_PHYSICAL_ADDRESS 1709 acpi_OsGetRootPointer(void) 1710 { 1711 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1712 1713 /* 1714 * We let MD code handle this since there are multiple ways to do it: 1715 * 1716 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1717 * 1718 * IA-64: Use the EFI. 1719 */ 1720 PhysicalAddress = acpi_md_OsGetRootPointer(); 1721 1722 if (acpi_root_pointer == 0) 1723 acpi_root_pointer = PhysicalAddress; 1724 1725 return PhysicalAddress; 1726 } 1727 1728 static ACPI_TABLE_HEADER * 1729 acpi_map_rsdt(void) 1730 { 1731 ACPI_PHYSICAL_ADDRESS paddr; 1732 ACPI_TABLE_RSDP *rsdp; 1733 1734 paddr = AcpiOsGetRootPointer(); 1735 1736 if (paddr == 0) 1737 return NULL; 1738 1739 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1740 1741 if (rsdp == NULL) 1742 return NULL; 1743 1744 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1745 paddr = rsdp->XsdtPhysicalAddress; 1746 else 1747 paddr = rsdp->RsdtPhysicalAddress; 1748 1749 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1750 1751 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1752 } 1753 1754 static void 1755 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1756 { 1757 1758 if (rsdt == NULL) 1759 return; 1760 1761 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1762 } 1763