acpi.c revision 1.201
1 /* $NetBSD: acpi.c,v 1.201 2010/06/07 13:04:31 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 1.201 2010/06/07 13:04:31 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 /* acpiverbose support */ 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 acpi_print_devnodes_stub(struct acpi_softc *sc) 240 { 241 acpi_load_verbose(); 242 if (acpi_verbose_loaded) 243 acpi_print_devnodes(sc); 244 } 245 246 void acpi_print_tree_stub(struct acpi_devnode *ad, uint32_t level) 247 { 248 acpi_load_verbose(); 249 if (acpi_verbose_loaded) 250 acpi_print_tree(ad, level); 251 } 252 253 void acpi_print_dev_stub(const char *pnpstr) 254 { 255 acpi_load_verbose(); 256 if (acpi_verbose_loaded) 257 acpi_print_dev(pnpstr); 258 } 259 260 void acpi_wmidump_stub(void *arg) 261 { 262 acpi_load_verbose(); 263 if (acpi_verbose_loaded) 264 acpi_wmidump(arg); 265 } 266 267 CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 268 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 269 270 /* 271 * Probe for ACPI support. 272 * 273 * This is called by the machine-dependent ACPI front-end. 274 * Note: this is not an autoconfiguration interface function. 275 */ 276 int 277 acpi_probe(void) 278 { 279 ACPI_TABLE_HEADER *rsdt; 280 const char *func; 281 static int once; 282 bool initialized; 283 ACPI_STATUS rv; 284 285 if (once != 0) 286 panic("%s: already probed", __func__); 287 288 once = 1; 289 func = NULL; 290 initialized = false; 291 292 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 293 294 /* 295 * Start up ACPICA. 296 */ 297 #ifdef ACPI_DEBUGGER 298 if (acpi_dbgr & ACPI_DBGR_INIT) 299 acpi_osd_debugger(); 300 #endif 301 302 CTASSERT(TRUE == true); 303 CTASSERT(FALSE == false); 304 305 AcpiGbl_AllMethodsSerialized = false; 306 AcpiGbl_EnableInterpreterSlack = true; 307 308 rv = AcpiInitializeSubsystem(); 309 310 if (ACPI_SUCCESS(rv)) 311 initialized = true; 312 else { 313 func = "AcpiInitializeSubsystem()"; 314 goto fail; 315 } 316 317 /* 318 * Allocate space for RSDT/XSDT and DSDT, 319 * but allow resizing if more tables exist. 320 */ 321 rv = AcpiInitializeTables(NULL, 2, true); 322 323 if (ACPI_FAILURE(rv)) { 324 func = "AcpiInitializeTables()"; 325 goto fail; 326 } 327 328 #ifdef ACPI_DEBUGGER 329 if (acpi_dbgr & ACPI_DBGR_TABLES) 330 acpi_osd_debugger(); 331 #endif 332 333 rv = AcpiLoadTables(); 334 335 if (ACPI_FAILURE(rv)) { 336 func = "AcpiLoadTables()"; 337 goto fail; 338 } 339 340 rsdt = acpi_map_rsdt(); 341 342 if (rsdt == NULL) { 343 func = "acpi_map_rsdt()"; 344 rv = AE_ERROR; 345 goto fail; 346 } 347 348 if (acpi_force_load == 0 && (acpi_find_quirks() & ACPI_QUIRK_BROKEN)) { 349 aprint_normal("ACPI: BIOS is listed as broken:\n"); 350 aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 351 "AslId <%4.4s,%08x>\n", 352 rsdt->OemId, rsdt->OemTableId, 353 rsdt->OemRevision, 354 rsdt->AslCompilerId, 355 rsdt->AslCompilerRevision); 356 aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n"); 357 acpi_unmap_rsdt(rsdt); 358 AcpiTerminate(); 359 return 0; 360 } 361 362 acpi_unmap_rsdt(rsdt); 363 364 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 365 366 if (ACPI_FAILURE(rv)) { 367 func = "AcpiEnableSubsystem()"; 368 goto fail; 369 } 370 371 /* 372 * Looks like we have ACPI! 373 */ 374 return 1; 375 376 fail: 377 KASSERT(rv != AE_OK); 378 KASSERT(func != NULL); 379 380 aprint_error("%s: failed to probe ACPI: %s\n", 381 func, AcpiFormatException(rv)); 382 383 if (initialized != false) 384 (void)AcpiTerminate(); 385 386 return 0; 387 } 388 389 int 390 acpi_check(device_t parent, const char *ifattr) 391 { 392 return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); 393 } 394 395 /* 396 * Autoconfiguration. 397 */ 398 static int 399 acpi_match(device_t parent, cfdata_t match, void *aux) 400 { 401 /* 402 * XXX: Nada; MD code has called acpi_probe(). 403 */ 404 return 1; 405 } 406 407 static int 408 acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 409 { 410 struct cfattach *ca; 411 412 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 413 414 return (ca == &acpi_ca); 415 } 416 417 static void 418 acpi_attach(device_t parent, device_t self, void *aux) 419 { 420 struct acpi_softc *sc = device_private(self); 421 struct acpibus_attach_args *aa = aux; 422 ACPI_TABLE_HEADER *rsdt; 423 ACPI_STATUS rv; 424 425 aprint_naive("\n"); 426 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 427 428 if (acpi_softc != NULL) 429 panic("%s: already attached", __func__); 430 431 rsdt = acpi_map_rsdt(); 432 433 if (rsdt == NULL) 434 aprint_error_dev(self, "X/RSDT: Not found\n"); 435 else { 436 aprint_verbose_dev(self, 437 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 438 rsdt->OemId, rsdt->OemTableId, 439 rsdt->OemRevision, 440 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 441 } 442 443 acpi_unmap_rsdt(rsdt); 444 445 sc->sc_dev = self; 446 sc->sc_root = NULL; 447 448 sc->sc_sleepstate = ACPI_STATE_S0; 449 sc->sc_quirks = acpi_find_quirks(); 450 451 sysmon_power_settype("acpi"); 452 453 sc->sc_iot = aa->aa_iot; 454 sc->sc_memt = aa->aa_memt; 455 sc->sc_pc = aa->aa_pc; 456 sc->sc_pciflags = aa->aa_pciflags; 457 sc->sc_ic = aa->aa_ic; 458 459 SIMPLEQ_INIT(&sc->ad_head); 460 461 acpi_softc = sc; 462 463 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) 464 aprint_error_dev(self, "couldn't establish power handler\n"); 465 466 /* 467 * Bring ACPI on-line. 468 */ 469 #ifdef ACPI_DEBUGGER 470 if (acpi_dbgr & ACPI_DBGR_ENABLE) 471 acpi_osd_debugger(); 472 #endif 473 474 #define ACPI_ENABLE_PHASE1 \ 475 (ACPI_NO_HANDLER_INIT | ACPI_NO_EVENT_INIT) 476 #define ACPI_ENABLE_PHASE2 \ 477 (ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE | \ 478 ACPI_NO_ADDRESS_SPACE_INIT) 479 480 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE1); 481 482 if (ACPI_FAILURE(rv)) 483 goto fail; 484 485 acpi_md_callback(); 486 487 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE2); 488 489 if (ACPI_FAILURE(rv)) 490 goto fail; 491 492 /* 493 * Early EC handler initialization if ECDT table is available. 494 */ 495 config_found_ia(self, "acpiecdtbus", aa, NULL); 496 497 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 498 499 if (ACPI_FAILURE(rv)) 500 goto fail; 501 502 /* 503 * Install global notify handlers. 504 */ 505 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 506 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 507 508 if (ACPI_FAILURE(rv)) 509 goto fail; 510 511 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 512 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 513 514 if (ACPI_FAILURE(rv)) 515 goto fail; 516 517 acpi_active = 1; 518 519 /* Show SCI interrupt. */ 520 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 521 AcpiGbl_FADT.SciInterrupt); 522 523 /* 524 * Install fixed-event handlers. 525 */ 526 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 527 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 528 529 acpitimer_init(); 530 531 #ifdef ACPI_DEBUGGER 532 if (acpi_dbgr & ACPI_DBGR_PROBE) 533 acpi_osd_debugger(); 534 #endif 535 536 /* 537 * Scan the namespace and build our device tree. 538 */ 539 acpi_build_tree(sc); 540 acpi_sleep_init(sc); 541 542 #ifdef ACPI_DEBUGGER 543 if (acpi_dbgr & ACPI_DBGR_RUNNING) 544 acpi_osd_debugger(); 545 #endif 546 547 #ifdef ACPI_DEBUG 548 acpi_debug_init(); 549 #endif 550 551 return; 552 553 fail: 554 KASSERT(rv != AE_OK); 555 556 aprint_error("%s: failed to initialize ACPI: %s\n", 557 __func__, AcpiFormatException(rv)); 558 } 559 560 /* 561 * XXX: This is incomplete. 562 */ 563 static int 564 acpi_detach(device_t self, int flags) 565 { 566 struct acpi_softc *sc = device_private(self); 567 ACPI_STATUS rv; 568 int rc; 569 570 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 571 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 572 573 if (ACPI_FAILURE(rv)) 574 return EBUSY; 575 576 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 577 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 578 579 if (ACPI_FAILURE(rv)) 580 return EBUSY; 581 582 if ((rc = config_detach_children(self, flags)) != 0) 583 return rc; 584 585 if ((rc = acpitimer_detach()) != 0) 586 return rc; 587 588 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 589 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 590 591 pmf_device_deregister(self); 592 593 acpi_softc = NULL; 594 595 return 0; 596 } 597 598 /* 599 * XXX: Need to reclaim any resources? Yes. 600 */ 601 static void 602 acpi_childdet(device_t self, device_t child) 603 { 604 struct acpi_softc *sc = device_private(self); 605 struct acpi_devnode *ad; 606 607 if (sc->sc_apmbus == child) 608 sc->sc_apmbus = NULL; 609 610 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 611 612 if (ad->ad_device == child) 613 ad->ad_device = NULL; 614 } 615 } 616 617 static bool 618 acpi_suspend(device_t dv, const pmf_qual_t *qual) 619 { 620 621 acpi_suspended = 1; 622 623 return true; 624 } 625 626 static bool 627 acpi_resume(device_t dv, const pmf_qual_t *qual) 628 { 629 630 acpi_suspended = 0; 631 632 return true; 633 } 634 635 /* 636 * Namespace scan. 637 */ 638 static void 639 acpi_build_tree(struct acpi_softc *sc) 640 { 641 struct acpi_walkcontext awc; 642 643 /* 644 * Get the root scope handles. 645 */ 646 KASSERT(__arraycount(acpi_scopes) == 4); 647 648 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 649 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 650 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 651 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 652 653 /* 654 * Make the root node. 655 */ 656 awc.aw_sc = sc; 657 awc.aw_parent = NULL; 658 659 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 660 661 KASSERT(sc->sc_root == NULL); 662 KASSERT(awc.aw_parent != NULL); 663 664 sc->sc_root = awc.aw_parent; 665 666 /* 667 * Build the internal namespace. 668 */ 669 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 670 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 671 672 /* 673 * Scan the internal namespace. 674 */ 675 acpi_rescan1(sc, NULL, NULL); 676 acpi_rescan_capabilities(sc); 677 678 (void)acpi_pcidev_scan(sc->sc_root); 679 680 acpi_print_devnodes(sc); 681 acpi_print_tree(sc->sc_root, 0); 682 } 683 684 static ACPI_STATUS 685 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 686 void *context, void **status) 687 { 688 struct acpi_walkcontext *awc = context; 689 struct acpi_softc *sc = awc->aw_sc; 690 struct acpi_devnode *ad; 691 ACPI_DEVICE_INFO *devinfo; 692 ACPI_OBJECT_TYPE type; 693 ACPI_NAME_UNION *anu; 694 ACPI_STATUS rv; 695 int clear, i; 696 697 rv = AcpiGetObjectInfo(handle, &devinfo); 698 699 if (ACPI_FAILURE(rv)) 700 return AE_OK; /* Do not terminate the walk. */ 701 702 type = devinfo->Type; 703 704 switch (type) { 705 706 case ACPI_TYPE_DEVICE: 707 708 #ifdef ACPI_ACTIVATE_DEV 709 acpi_activate_device(handle, &devinfo); 710 #endif 711 712 case ACPI_TYPE_PROCESSOR: 713 case ACPI_TYPE_THERMAL: 714 case ACPI_TYPE_POWER: 715 716 ad = malloc(sizeof(*ad), M_ACPI, M_NOWAIT | M_ZERO); 717 718 if (ad == NULL) 719 return AE_NO_MEMORY; 720 721 ad->ad_device = NULL; 722 ad->ad_notify = NULL; 723 ad->ad_pciinfo = NULL; 724 725 ad->ad_type = type; 726 ad->ad_handle = handle; 727 ad->ad_devinfo = devinfo; 728 729 ad->ad_root = sc->sc_dev; 730 ad->ad_parent = awc->aw_parent; 731 732 anu = (ACPI_NAME_UNION *)&devinfo->Name; 733 ad->ad_name[4] = '\0'; 734 735 for (i = 3, clear = 0; i >= 0; i--) { 736 737 if (clear == 0 && anu->Ascii[i] == '_') 738 ad->ad_name[i] = '\0'; 739 else { 740 ad->ad_name[i] = anu->Ascii[i]; 741 clear = 1; 742 } 743 } 744 745 if (ad->ad_name[0] == '\0') 746 ad->ad_name[0] = '_'; 747 748 SIMPLEQ_INIT(&ad->ad_child_head); 749 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 750 751 if (ad->ad_parent != NULL) { 752 753 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 754 ad, ad_child_list); 755 } 756 757 awc->aw_parent = ad; 758 } 759 760 return AE_OK; 761 } 762 763 static ACPI_STATUS 764 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 765 void *context, void **status) 766 { 767 struct acpi_walkcontext *awc = context; 768 769 KASSERT(awc != NULL); 770 KASSERT(awc->aw_parent != NULL); 771 772 if (handle == awc->aw_parent->ad_handle) 773 awc->aw_parent = awc->aw_parent->ad_parent; 774 775 return AE_OK; 776 } 777 778 #ifdef ACPI_ACTIVATE_DEV 779 static void 780 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 781 { 782 static const int valid = ACPI_VALID_STA | ACPI_VALID_HID; 783 ACPI_DEVICE_INFO *newdi; 784 ACPI_STATUS rv; 785 uint32_t old; 786 787 /* 788 * If the device is valid and present, 789 * but not enabled, try to activate it. 790 */ 791 if (((*di)->Valid & valid) != valid) 792 return; 793 794 old = (*di)->CurrentStatus; 795 796 if ((old & (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED)) != 797 ACPI_STA_DEVICE_PRESENT) 798 return; 799 800 rv = acpi_allocate_resources(handle); 801 802 if (ACPI_FAILURE(rv)) 803 goto fail; 804 805 rv = AcpiGetObjectInfo(handle, &newdi); 806 807 if (ACPI_FAILURE(rv)) 808 goto fail; 809 810 ACPI_FREE(*di); 811 *di = newdi; 812 813 aprint_verbose_dev(acpi_softc->sc_dev, 814 "%s activated, STA 0x%08X -> STA 0x%08X\n", 815 (*di)->HardwareId.String, old, (*di)->CurrentStatus); 816 817 return; 818 819 fail: 820 aprint_error_dev(acpi_softc->sc_dev, "failed to " 821 "activate %s\n", (*di)->HardwareId.String); 822 } 823 824 /* 825 * XXX: This very incomplete. 826 */ 827 ACPI_STATUS 828 acpi_allocate_resources(ACPI_HANDLE handle) 829 { 830 ACPI_BUFFER bufp, bufc, bufn; 831 ACPI_RESOURCE *resp, *resc, *resn; 832 ACPI_RESOURCE_IRQ *irq; 833 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 834 ACPI_STATUS rv; 835 uint delta; 836 837 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 838 if (ACPI_FAILURE(rv)) 839 goto out; 840 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 841 if (ACPI_FAILURE(rv)) { 842 goto out1; 843 } 844 845 bufn.Length = 1000; 846 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 847 resp = bufp.Pointer; 848 resc = bufc.Pointer; 849 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 850 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 851 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 852 resp = ACPI_NEXT_RESOURCE(resp); 853 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 854 break; 855 /* Found identical Id */ 856 resn->Type = resc->Type; 857 switch (resc->Type) { 858 case ACPI_RESOURCE_TYPE_IRQ: 859 memcpy(&resn->Data, &resp->Data, 860 sizeof(ACPI_RESOURCE_IRQ)); 861 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 862 irq->Interrupts[0] = 863 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 864 Interrupts[irq->InterruptCount-1]; 865 irq->InterruptCount = 1; 866 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 867 break; 868 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 869 memcpy(&resn->Data, &resp->Data, 870 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 871 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 872 #if 0 873 /* 874 * XXX: Not duplicating the interrupt logic above 875 * because its not clear what it accomplishes. 876 */ 877 xirq->Interrupts[0] = 878 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 879 Interrupts[irq->NumberOfInterrupts-1]; 880 xirq->NumberOfInterrupts = 1; 881 #endif 882 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 883 break; 884 case ACPI_RESOURCE_TYPE_IO: 885 memcpy(&resn->Data, &resp->Data, 886 sizeof(ACPI_RESOURCE_IO)); 887 resn->Length = resp->Length; 888 break; 889 default: 890 aprint_error_dev(acpi_softc->sc_dev, 891 "%s: invalid type %u\n", __func__, resc->Type); 892 rv = AE_BAD_DATA; 893 goto out2; 894 } 895 resc = ACPI_NEXT_RESOURCE(resc); 896 resn = ACPI_NEXT_RESOURCE(resn); 897 resp = ACPI_NEXT_RESOURCE(resp); 898 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 899 if (delta >= 900 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 901 bufn.Length *= 2; 902 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 903 M_ACPI, M_WAITOK); 904 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 905 delta); 906 } 907 } 908 909 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 910 aprint_error_dev(acpi_softc->sc_dev, 911 "%s: resc not exhausted\n", __func__); 912 rv = AE_BAD_DATA; 913 goto out3; 914 } 915 916 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 917 rv = AcpiSetCurrentResources(handle, &bufn); 918 919 if (ACPI_FAILURE(rv)) 920 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 921 "resources: %s\n", __func__, AcpiFormatException(rv)); 922 923 out3: 924 free(bufn.Pointer, M_ACPI); 925 out2: 926 ACPI_FREE(bufc.Pointer); 927 out1: 928 ACPI_FREE(bufp.Pointer); 929 out: 930 return rv; 931 } 932 #endif /* ACPI_ACTIVATE_DEV */ 933 934 /* 935 * Device attachment. 936 */ 937 static int 938 acpi_rescan(device_t self, const char *ifattr, const int *locators) 939 { 940 struct acpi_softc *sc = device_private(self); 941 942 acpi_rescan1(sc, ifattr, locators); 943 944 return 0; 945 } 946 947 static void 948 acpi_rescan1(struct acpi_softc *sc, const char *ifattr, const int *locators) 949 { 950 951 if (ifattr_match(ifattr, "acpinodebus")) 952 acpi_rescan_nodes(sc); 953 954 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 955 sc->sc_apmbus = config_found_ia(sc->sc_dev, 956 "acpiapmbus", NULL, NULL); 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 acpi_wakedev_commit(sc, state); 1421 1422 if (state != ACPI_STATE_S1 && 1423 pmf_system_suspend(PMF_Q_NONE) != true) { 1424 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1425 break; 1426 } 1427 1428 /* 1429 * This will evaluate the _PTS and _SST methods, 1430 * but unlike the documentation claims, not _GTS, 1431 * which is evaluated in AcpiEnterSleepState(). 1432 * 1433 * This must be called with interrupts enabled. 1434 */ 1435 rv = AcpiEnterSleepStatePrep(state); 1436 1437 if (ACPI_FAILURE(rv)) { 1438 aprint_error_dev(sc->sc_dev, "failed to prepare " 1439 "S%d: %s\n", state, AcpiFormatException(rv)); 1440 break; 1441 } 1442 1443 sc->sc_sleepstate = state; 1444 1445 if (state == ACPI_STATE_S1) { 1446 1447 /* Just enter the state. */ 1448 acpi_md_OsDisableInterrupt(); 1449 rv = AcpiEnterSleepState(state); 1450 1451 if (ACPI_FAILURE(rv)) 1452 aprint_error_dev(sc->sc_dev, "failed to " 1453 "enter S1: %s\n", AcpiFormatException(rv)); 1454 1455 (void)AcpiLeaveSleepState(state); 1456 1457 } else { 1458 1459 err = acpi_md_sleep(state); 1460 1461 if (state == ACPI_STATE_S4) 1462 AcpiEnable(); 1463 1464 pmf_system_bus_resume(PMF_Q_NONE); 1465 (void)AcpiLeaveSleepState(state); 1466 pmf_system_resume(PMF_Q_NONE); 1467 } 1468 1469 break; 1470 1471 case ACPI_STATE_S5: 1472 1473 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1474 1475 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1476 1477 if (ACPI_FAILURE(rv)) { 1478 aprint_error_dev(sc->sc_dev, "failed to prepare " 1479 "S%d: %s\n", state, AcpiFormatException(rv)); 1480 break; 1481 } 1482 1483 DELAY(1000000); 1484 1485 sc->sc_sleepstate = state; 1486 acpi_md_OsDisableInterrupt(); 1487 1488 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1489 1490 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1491 1492 break; 1493 } 1494 1495 sc->sc_sleepstate = ACPI_STATE_S0; 1496 1497 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1498 } 1499 1500 /* 1501 * Sysctl. 1502 */ 1503 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1504 { 1505 const struct sysctlnode *mnode, *rnode; 1506 int err; 1507 1508 err = sysctl_createv(clog, 0, NULL, &rnode, 1509 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", 1510 NULL, NULL, 0, NULL, 0, 1511 CTL_HW, CTL_EOL); 1512 1513 if (err != 0) 1514 return; 1515 1516 err = sysctl_createv(clog, 0, &rnode, &rnode, 1517 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1518 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1519 NULL, 0, NULL, 0, 1520 CTL_CREATE, CTL_EOL); 1521 1522 if (err != 0) 1523 return; 1524 1525 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1526 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1527 "root", SYSCTL_DESCR("ACPI root pointer"), 1528 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1529 CTL_CREATE, CTL_EOL); 1530 1531 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1532 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1533 "supported_states", SYSCTL_DESCR("Supported system states"), 1534 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1535 CTL_CREATE, CTL_EOL); 1536 1537 err = sysctl_createv(NULL, 0, NULL, &mnode, 1538 CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep", 1539 NULL, NULL, 0, NULL, 0, 1540 CTL_MACHDEP, CTL_EOL); 1541 1542 if (err == 0) { 1543 1544 (void)sysctl_createv(NULL, 0, &mnode, NULL, 1545 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1546 "sleep_state", SYSCTL_DESCR("System sleep state"), 1547 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1548 CTL_CREATE, CTL_EOL); 1549 } 1550 1551 err = sysctl_createv(clog, 0, &rnode, &rnode, 1552 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1553 "stat", SYSCTL_DESCR("ACPI statistics"), 1554 NULL, 0, NULL, 0, 1555 CTL_CREATE, CTL_EOL); 1556 1557 if (err != 0) 1558 return; 1559 1560 (void)sysctl_createv(clog, 0, &rnode, NULL, 1561 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1562 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1563 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1564 CTL_CREATE, CTL_EOL); 1565 1566 (void)sysctl_createv(clog, 0, &rnode, NULL, 1567 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1568 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1569 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1570 CTL_CREATE, CTL_EOL); 1571 1572 (void)sysctl_createv(clog, 0, &rnode, NULL, 1573 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1574 "fixed", SYSCTL_DESCR("Number of fixed events"), 1575 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1576 CTL_CREATE, CTL_EOL); 1577 1578 (void)sysctl_createv(clog, 0, &rnode, NULL, 1579 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1580 "method", SYSCTL_DESCR("Number of methods executed"), 1581 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1582 CTL_CREATE, CTL_EOL); 1583 1584 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1585 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1586 } 1587 1588 static int 1589 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1590 { 1591 struct sysctlnode node; 1592 uint64_t t; 1593 int err, i; 1594 1595 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1596 t += AcpiFixedEventCount[i]; 1597 1598 node = *rnode; 1599 node.sysctl_data = &t; 1600 1601 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1602 1603 if (err || newp == NULL) 1604 return err; 1605 1606 return 0; 1607 } 1608 1609 static int 1610 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1611 { 1612 struct acpi_softc *sc = acpi_softc; 1613 struct sysctlnode node; 1614 int err, t; 1615 1616 if (acpi_softc == NULL) 1617 return ENOSYS; 1618 1619 node = *rnode; 1620 t = sc->sc_sleepstate; 1621 node.sysctl_data = &t; 1622 1623 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1624 1625 if (err || newp == NULL) 1626 return err; 1627 1628 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1629 return EINVAL; 1630 1631 acpi_enter_sleep_state(sc, t); 1632 1633 return 0; 1634 } 1635 1636 static int 1637 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1638 { 1639 struct acpi_softc *sc = acpi_softc; 1640 struct sysctlnode node; 1641 char t[3 * 6 + 1]; 1642 int err; 1643 1644 if (acpi_softc == NULL) 1645 return ENOSYS; 1646 1647 (void)memset(t, '\0', sizeof(t)); 1648 1649 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1650 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1651 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1652 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1653 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1654 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1655 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1656 1657 node = *rnode; 1658 node.sysctl_data = &t; 1659 1660 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1661 1662 if (err || newp == NULL) 1663 return err; 1664 1665 return 0; 1666 } 1667 1668 /* 1669 * Miscellaneous. 1670 */ 1671 static bool 1672 acpi_is_scope(struct acpi_devnode *ad) 1673 { 1674 int i; 1675 1676 /* 1677 * Return true if the node is a root scope. 1678 */ 1679 if (ad->ad_parent == NULL) 1680 return false; 1681 1682 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1683 return false; 1684 1685 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1686 1687 if (acpi_scopes[i] == NULL) 1688 continue; 1689 1690 if (ad->ad_handle == acpi_scopes[i]) 1691 return true; 1692 } 1693 1694 return false; 1695 } 1696 1697 ACPI_PHYSICAL_ADDRESS 1698 acpi_OsGetRootPointer(void) 1699 { 1700 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1701 1702 /* 1703 * We let MD code handle this since there are multiple ways to do it: 1704 * 1705 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1706 * 1707 * IA-64: Use the EFI. 1708 */ 1709 PhysicalAddress = acpi_md_OsGetRootPointer(); 1710 1711 if (acpi_root_pointer == 0) 1712 acpi_root_pointer = PhysicalAddress; 1713 1714 return PhysicalAddress; 1715 } 1716 1717 static ACPI_TABLE_HEADER * 1718 acpi_map_rsdt(void) 1719 { 1720 ACPI_PHYSICAL_ADDRESS paddr; 1721 ACPI_TABLE_RSDP *rsdp; 1722 1723 paddr = AcpiOsGetRootPointer(); 1724 1725 if (paddr == 0) 1726 return NULL; 1727 1728 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1729 1730 if (rsdp == NULL) 1731 return NULL; 1732 1733 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1734 paddr = rsdp->XsdtPhysicalAddress; 1735 else 1736 paddr = rsdp->RsdtPhysicalAddress; 1737 1738 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1739 1740 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1741 } 1742 1743 static void 1744 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1745 { 1746 1747 if (rsdt == NULL) 1748 return; 1749 1750 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1751 } 1752
Indexes created Wed Oct 01 19:09:53 GMT 2025