acpi.c revision 1.208
1 /* $NetBSD: acpi.c,v 1.208 2010/07/25 12:54:46 pgoyette 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 1.208 2010/07/25 12:54:46 pgoyette 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 #include <sys/timetc.h> 82 83 #include <dev/acpi/acpireg.h> 84 #include <dev/acpi/acpivar.h> 85 #include <dev/acpi/acpi_osd.h> 86 #include <dev/acpi/acpi_pci.h> 87 #include <dev/acpi/acpi_power.h> 88 #include <dev/acpi/acpi_timer.h> 89 #include <dev/acpi/acpi_wakedev.h> 90 91 #define _COMPONENT ACPI_BUS_COMPONENT 92 ACPI_MODULE_NAME ("acpi") 93 94 #if defined(ACPI_PCI_FIXUP) 95 #error The option ACPI_PCI_FIXUP has been obsoleted by PCI_INTR_FIXUP_DISABLED. Please adjust your kernel configuration file. 96 #endif 97 98 #ifdef PCI_INTR_FIXUP_DISABLED 99 #include <dev/pci/pcidevs.h> 100 #endif 101 102 MALLOC_DECLARE(M_ACPI); 103 104 #include <machine/acpi_machdep.h> 105 106 #ifdef ACPI_DEBUGGER 107 #define ACPI_DBGR_INIT 0x01 108 #define ACPI_DBGR_TABLES 0x02 109 #define ACPI_DBGR_ENABLE 0x04 110 #define ACPI_DBGR_PROBE 0x08 111 #define ACPI_DBGR_RUNNING 0x10 112 113 static int acpi_dbgr = 0x00; 114 #endif 115 116 /* 117 * This is a flag we set when the ACPI subsystem is active. Machine 118 * dependent code may wish to skip other steps (such as attaching 119 * subsystems that ACPI supercedes) when ACPI is active. 120 */ 121 int acpi_active; 122 int acpi_force_load; 123 int acpi_suspended = 0; 124 125 struct acpi_softc *acpi_softc; 126 static uint64_t acpi_root_pointer; 127 extern kmutex_t acpi_interrupt_list_mtx; 128 static ACPI_HANDLE acpi_scopes[4]; 129 130 /* 131 * This structure provides a context for the ACPI 132 * namespace walk performed in acpi_build_tree(). 133 */ 134 struct acpi_walkcontext { 135 struct acpi_softc *aw_sc; 136 struct acpi_devnode *aw_parent; 137 }; 138 139 /* 140 * Ignored HIDs. 141 */ 142 static const char * const acpi_ignored_ids[] = { 143 #if defined(i386) || defined(x86_64) 144 "PNP0000", /* AT interrupt controller is handled internally */ 145 "PNP0200", /* AT DMA controller is handled internally */ 146 "PNP0A??", /* PCI Busses are handled internally */ 147 "PNP0B00", /* AT RTC is handled internally */ 148 "PNP0C0B", /* No need for "ACPI fan" driver */ 149 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 150 "IFX0102", /* No driver for Infineon TPM */ 151 "INT0800", /* No driver for Intel Firmware Hub device */ 152 #endif 153 #if defined(x86_64) 154 "PNP0C04", /* FPU is handled internally */ 155 #endif 156 NULL 157 }; 158 159 static int acpi_match(device_t, cfdata_t, void *); 160 static int acpi_submatch(device_t, cfdata_t, const int *, void *); 161 static void acpi_attach(device_t, device_t, void *); 162 static int acpi_detach(device_t, int); 163 static void acpi_childdet(device_t, device_t); 164 static bool acpi_suspend(device_t, const pmf_qual_t *); 165 static bool acpi_resume(device_t, const pmf_qual_t *); 166 167 static void acpi_build_tree(struct acpi_softc *); 168 static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, 169 void *, void **); 170 static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t, 171 void *, void **); 172 173 #ifdef ACPI_ACTIVATE_DEV 174 static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **); 175 static ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE); 176 #endif 177 178 static int acpi_rescan(device_t, const char *, const int *); 179 static void acpi_rescan_nodes(struct acpi_softc *); 180 static void acpi_rescan_capabilities(struct acpi_softc *); 181 static int acpi_print(void *aux, const char *); 182 183 static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); 184 185 static void acpi_register_fixed_button(struct acpi_softc *, int); 186 static void acpi_deregister_fixed_button(struct acpi_softc *, int); 187 static uint32_t acpi_fixed_button_handler(void *); 188 static void acpi_fixed_button_pressed(void *); 189 190 static void acpi_sleep_init(struct acpi_softc *); 191 192 static int sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS); 193 static int sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS); 194 static int sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS); 195 196 static bool acpi_is_scope(struct acpi_devnode *); 197 static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 198 static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 199 200 extern struct cfdriver acpi_cd; 201 202 /* Handle routine vectors and loading for acpiverbose module */ 203 void acpi_null(void); 204 205 void acpi_print_devnodes_stub(struct acpi_softc *); 206 void acpi_print_tree_stub(struct acpi_devnode *, uint32_t); 207 void acpi_print_dev_stub(const char *); 208 void acpi_wmidump_stub(void *); 209 210 void (*acpi_print_devnodes)(struct acpi_softc *) = acpi_print_devnodes_stub; 211 void (*acpi_print_tree)(struct acpi_devnode *, uint32_t) = acpi_print_tree_stub; 212 void (*acpi_print_dev)(const char *) = acpi_print_dev_stub; 213 void (*acpi_wmidump)(void *) = acpi_wmidump_stub; 214 215 int acpi_verbose_loaded = 0; 216 217 /* 218 * Support for ACPIVERBOSE. 219 */ 220 void 221 acpi_null(void) 222 { 223 /* Nothing to do. */ 224 } 225 226 void 227 acpi_load_verbose(void) 228 { 229 if (acpi_verbose_loaded == 0) { 230 mutex_enter(&module_lock); 231 module_autoload("acpiverbose", MODULE_CLASS_MISC); 232 mutex_exit(&module_lock); 233 } 234 } 235 236 void 237 acpi_print_devnodes_stub(struct acpi_softc *sc) 238 { 239 acpi_load_verbose(); 240 if (acpi_verbose_loaded) 241 acpi_print_devnodes(sc); 242 } 243 244 void 245 acpi_print_tree_stub(struct acpi_devnode *ad, uint32_t level) 246 { 247 acpi_load_verbose(); 248 if (acpi_verbose_loaded) 249 acpi_print_tree(ad, level); 250 } 251 252 void 253 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 261 acpi_wmidump_stub(void *arg) 262 { 263 acpi_load_verbose(); 264 if (acpi_verbose_loaded) 265 acpi_wmidump(arg); 266 } 267 268 CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 269 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 270 271 /* 272 * Probe for ACPI support. 273 * 274 * This is called by the machine-dependent ACPI front-end. 275 * Note: this is not an autoconfiguration interface function. 276 */ 277 int 278 acpi_probe(void) 279 { 280 ACPI_TABLE_HEADER *rsdt; 281 const char *func; 282 static int once; 283 bool initialized; 284 ACPI_STATUS rv; 285 286 if (once != 0) 287 panic("%s: already probed", __func__); 288 289 once = 1; 290 func = NULL; 291 initialized = false; 292 293 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 294 295 /* 296 * Start up ACPICA. 297 */ 298 #ifdef ACPI_DEBUGGER 299 if (acpi_dbgr & ACPI_DBGR_INIT) 300 acpi_osd_debugger(); 301 #endif 302 303 CTASSERT(TRUE == true); 304 CTASSERT(FALSE == false); 305 306 AcpiGbl_AllMethodsSerialized = false; 307 AcpiGbl_EnableInterpreterSlack = true; 308 309 rv = AcpiInitializeSubsystem(); 310 311 if (ACPI_SUCCESS(rv)) 312 initialized = true; 313 else { 314 func = "AcpiInitializeSubsystem()"; 315 goto fail; 316 } 317 318 /* 319 * Allocate space for RSDT/XSDT and DSDT, 320 * but allow resizing if more tables exist. 321 */ 322 rv = AcpiInitializeTables(NULL, 2, true); 323 324 if (ACPI_FAILURE(rv)) { 325 func = "AcpiInitializeTables()"; 326 goto fail; 327 } 328 329 #ifdef ACPI_DEBUGGER 330 if (acpi_dbgr & ACPI_DBGR_TABLES) 331 acpi_osd_debugger(); 332 #endif 333 334 rv = AcpiLoadTables(); 335 336 if (ACPI_FAILURE(rv)) { 337 func = "AcpiLoadTables()"; 338 goto fail; 339 } 340 341 rsdt = acpi_map_rsdt(); 342 343 if (rsdt == NULL) { 344 func = "acpi_map_rsdt()"; 345 rv = AE_ERROR; 346 goto fail; 347 } 348 349 if (acpi_force_load == 0 && (acpi_find_quirks() & ACPI_QUIRK_BROKEN)) { 350 aprint_normal("ACPI: BIOS is listed as broken:\n"); 351 aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 352 "AslId <%4.4s,%08x>\n", 353 rsdt->OemId, rsdt->OemTableId, 354 rsdt->OemRevision, 355 rsdt->AslCompilerId, 356 rsdt->AslCompilerRevision); 357 aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n"); 358 acpi_unmap_rsdt(rsdt); 359 AcpiTerminate(); 360 return 0; 361 } 362 363 acpi_unmap_rsdt(rsdt); 364 365 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 366 367 if (ACPI_FAILURE(rv)) { 368 func = "AcpiEnableSubsystem()"; 369 goto fail; 370 } 371 372 /* 373 * Looks like we have ACPI! 374 */ 375 return 1; 376 377 fail: 378 KASSERT(rv != AE_OK); 379 KASSERT(func != NULL); 380 381 aprint_error("%s: failed to probe ACPI: %s\n", 382 func, AcpiFormatException(rv)); 383 384 if (initialized != false) 385 (void)AcpiTerminate(); 386 387 return 0; 388 } 389 390 int 391 acpi_check(device_t parent, const char *ifattr) 392 { 393 return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); 394 } 395 396 /* 397 * Autoconfiguration. 398 */ 399 static int 400 acpi_match(device_t parent, cfdata_t match, void *aux) 401 { 402 /* 403 * XXX: Nada; MD code has called acpi_probe(). 404 */ 405 return 1; 406 } 407 408 static int 409 acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 410 { 411 struct cfattach *ca; 412 413 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 414 415 return (ca == &acpi_ca); 416 } 417 418 static void 419 acpi_attach(device_t parent, device_t self, void *aux) 420 { 421 struct acpi_softc *sc = device_private(self); 422 struct acpibus_attach_args *aa = aux; 423 ACPI_TABLE_HEADER *rsdt; 424 ACPI_STATUS rv; 425 426 aprint_naive("\n"); 427 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 428 429 if (acpi_softc != NULL) 430 panic("%s: already attached", __func__); 431 432 rsdt = acpi_map_rsdt(); 433 434 if (rsdt == NULL) 435 aprint_error_dev(self, "X/RSDT: Not found\n"); 436 else { 437 aprint_verbose_dev(self, 438 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 439 rsdt->OemId, rsdt->OemTableId, 440 rsdt->OemRevision, 441 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 442 } 443 444 acpi_unmap_rsdt(rsdt); 445 446 sc->sc_dev = self; 447 sc->sc_root = NULL; 448 449 sc->sc_sleepstate = ACPI_STATE_S0; 450 sc->sc_quirks = acpi_find_quirks(); 451 452 sysmon_power_settype("acpi"); 453 454 sc->sc_iot = aa->aa_iot; 455 sc->sc_memt = aa->aa_memt; 456 sc->sc_pc = aa->aa_pc; 457 sc->sc_pciflags = aa->aa_pciflags; 458 sc->sc_ic = aa->aa_ic; 459 460 SIMPLEQ_INIT(&sc->ad_head); 461 462 acpi_softc = sc; 463 464 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) 465 aprint_error_dev(self, "couldn't establish power handler\n"); 466 467 /* 468 * Bring ACPI on-line. 469 */ 470 #ifdef ACPI_DEBUGGER 471 if (acpi_dbgr & ACPI_DBGR_ENABLE) 472 acpi_osd_debugger(); 473 #endif 474 475 #define ACPI_ENABLE_PHASE1 \ 476 (ACPI_NO_HANDLER_INIT | ACPI_NO_EVENT_INIT) 477 #define ACPI_ENABLE_PHASE2 \ 478 (ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE | \ 479 ACPI_NO_ADDRESS_SPACE_INIT) 480 481 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE1); 482 483 if (ACPI_FAILURE(rv)) 484 goto fail; 485 486 acpi_md_callback(); 487 488 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE2); 489 490 if (ACPI_FAILURE(rv)) 491 goto fail; 492 493 /* 494 * Early EC handler initialization if ECDT table is available. 495 */ 496 config_found_ia(self, "acpiecdtbus", aa, NULL); 497 498 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 499 500 if (ACPI_FAILURE(rv)) 501 goto fail; 502 503 /* 504 * Install global notify handlers. 505 */ 506 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 507 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 508 509 if (ACPI_FAILURE(rv)) 510 goto fail; 511 512 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 513 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 514 515 if (ACPI_FAILURE(rv)) 516 goto fail; 517 518 acpi_active = 1; 519 520 /* Show SCI interrupt. */ 521 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 522 AcpiGbl_FADT.SciInterrupt); 523 524 /* 525 * Install fixed-event handlers. 526 */ 527 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 528 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 529 530 acpitimer_init(sc); 531 532 #ifdef ACPI_DEBUGGER 533 if (acpi_dbgr & ACPI_DBGR_PROBE) 534 acpi_osd_debugger(); 535 #endif 536 537 /* 538 * Scan the namespace and build our device tree. 539 */ 540 acpi_build_tree(sc); 541 acpi_sleep_init(sc); 542 543 #ifdef ACPI_DEBUGGER 544 if (acpi_dbgr & ACPI_DBGR_RUNNING) 545 acpi_osd_debugger(); 546 #endif 547 548 #ifdef ACPI_DEBUG 549 acpi_debug_init(); 550 #endif 551 552 return; 553 554 fail: 555 KASSERT(rv != AE_OK); 556 557 aprint_error("%s: failed to initialize ACPI: %s\n", 558 __func__, AcpiFormatException(rv)); 559 } 560 561 /* 562 * XXX: This is incomplete. 563 */ 564 static int 565 acpi_detach(device_t self, int flags) 566 { 567 struct acpi_softc *sc = device_private(self); 568 ACPI_STATUS rv; 569 int rc; 570 571 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 572 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 573 574 if (ACPI_FAILURE(rv)) 575 return EBUSY; 576 577 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 578 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 579 580 if (ACPI_FAILURE(rv)) 581 return EBUSY; 582 583 if ((rc = config_detach_children(self, flags)) != 0) 584 return rc; 585 586 if ((rc = acpitimer_detach()) != 0) 587 return rc; 588 589 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 590 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 591 592 pmf_device_deregister(self); 593 594 acpi_softc = NULL; 595 596 return 0; 597 } 598 599 /* 600 * XXX: Need to reclaim any resources? Yes. 601 */ 602 static void 603 acpi_childdet(device_t self, device_t child) 604 { 605 struct acpi_softc *sc = device_private(self); 606 struct acpi_devnode *ad; 607 608 if (sc->sc_apmbus == child) 609 sc->sc_apmbus = NULL; 610 611 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 612 613 if (ad->ad_device == child) 614 ad->ad_device = NULL; 615 } 616 } 617 618 static bool 619 acpi_suspend(device_t dv, const pmf_qual_t *qual) 620 { 621 622 acpi_suspended = 1; 623 624 return true; 625 } 626 627 static bool 628 acpi_resume(device_t dv, const pmf_qual_t *qual) 629 { 630 631 acpi_suspended = 0; 632 633 return true; 634 } 635 636 /* 637 * Namespace scan. 638 */ 639 static void 640 acpi_build_tree(struct acpi_softc *sc) 641 { 642 struct acpi_walkcontext awc; 643 644 /* 645 * Get the root scope handles. 646 */ 647 KASSERT(__arraycount(acpi_scopes) == 4); 648 649 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 650 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 651 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 652 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 653 654 /* 655 * Make the root node. 656 */ 657 awc.aw_sc = sc; 658 awc.aw_parent = NULL; 659 660 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 661 662 KASSERT(sc->sc_root == NULL); 663 KASSERT(awc.aw_parent != NULL); 664 665 sc->sc_root = awc.aw_parent; 666 667 /* 668 * Build the internal namespace. 669 */ 670 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 671 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 672 673 /* 674 * Scan the internal namespace. 675 */ 676 (void)acpi_rescan(sc->sc_dev, NULL, NULL); 677 678 acpi_rescan_capabilities(sc); 679 680 (void)acpi_pcidev_scan(sc->sc_root); 681 682 acpi_print_devnodes(sc); 683 acpi_print_tree(sc->sc_root, 0); 684 } 685 686 static ACPI_STATUS 687 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 688 void *context, void **status) 689 { 690 struct acpi_walkcontext *awc = context; 691 struct acpi_softc *sc = awc->aw_sc; 692 struct acpi_devnode *ad; 693 ACPI_DEVICE_INFO *devinfo; 694 ACPI_OBJECT_TYPE type; 695 ACPI_NAME_UNION *anu; 696 ACPI_STATUS rv; 697 int clear, i; 698 699 rv = AcpiGetObjectInfo(handle, &devinfo); 700 701 if (ACPI_FAILURE(rv)) 702 return AE_OK; /* Do not terminate the walk. */ 703 704 type = devinfo->Type; 705 706 switch (type) { 707 708 case ACPI_TYPE_DEVICE: 709 710 #ifdef ACPI_ACTIVATE_DEV 711 acpi_activate_device(handle, &devinfo); 712 #endif 713 714 case ACPI_TYPE_PROCESSOR: 715 case ACPI_TYPE_THERMAL: 716 case ACPI_TYPE_POWER: 717 718 ad = malloc(sizeof(*ad), M_ACPI, M_NOWAIT | M_ZERO); 719 720 if (ad == NULL) 721 return AE_NO_MEMORY; 722 723 ad->ad_device = NULL; 724 ad->ad_notify = NULL; 725 ad->ad_pciinfo = NULL; 726 727 ad->ad_type = type; 728 ad->ad_handle = handle; 729 ad->ad_devinfo = devinfo; 730 731 ad->ad_root = sc->sc_dev; 732 ad->ad_parent = awc->aw_parent; 733 734 anu = (ACPI_NAME_UNION *)&devinfo->Name; 735 ad->ad_name[4] = '\0'; 736 737 for (i = 3, clear = 0; i >= 0; i--) { 738 739 if (clear == 0 && anu->Ascii[i] == '_') 740 ad->ad_name[i] = '\0'; 741 else { 742 ad->ad_name[i] = anu->Ascii[i]; 743 clear = 1; 744 } 745 } 746 747 if (ad->ad_name[0] == '\0') 748 ad->ad_name[0] = '_'; 749 750 SIMPLEQ_INIT(&ad->ad_child_head); 751 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 752 753 acpi_set_node(ad); 754 755 if (ad->ad_parent != NULL) { 756 757 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 758 ad, ad_child_list); 759 } 760 761 awc->aw_parent = ad; 762 } 763 764 return AE_OK; 765 } 766 767 static ACPI_STATUS 768 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 769 void *context, void **status) 770 { 771 struct acpi_walkcontext *awc = context; 772 773 KASSERT(awc != NULL); 774 KASSERT(awc->aw_parent != NULL); 775 776 if (handle == awc->aw_parent->ad_handle) 777 awc->aw_parent = awc->aw_parent->ad_parent; 778 779 return AE_OK; 780 } 781 782 #ifdef ACPI_ACTIVATE_DEV 783 static void 784 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 785 { 786 static const int valid = ACPI_VALID_STA | ACPI_VALID_HID; 787 ACPI_DEVICE_INFO *newdi; 788 ACPI_STATUS rv; 789 uint32_t old; 790 791 /* 792 * If the device is valid and present, 793 * but not enabled, try to activate it. 794 */ 795 if (((*di)->Valid & valid) != valid) 796 return; 797 798 old = (*di)->CurrentStatus; 799 800 if ((old & (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED)) != 801 ACPI_STA_DEVICE_PRESENT) 802 return; 803 804 rv = acpi_allocate_resources(handle); 805 806 if (ACPI_FAILURE(rv)) 807 goto fail; 808 809 rv = AcpiGetObjectInfo(handle, &newdi); 810 811 if (ACPI_FAILURE(rv)) 812 goto fail; 813 814 ACPI_FREE(*di); 815 *di = newdi; 816 817 aprint_verbose_dev(acpi_softc->sc_dev, 818 "%s activated, STA 0x%08X -> STA 0x%08X\n", 819 (*di)->HardwareId.String, old, (*di)->CurrentStatus); 820 821 return; 822 823 fail: 824 aprint_error_dev(acpi_softc->sc_dev, "failed to " 825 "activate %s\n", (*di)->HardwareId.String); 826 } 827 828 /* 829 * XXX: This very incomplete. 830 */ 831 ACPI_STATUS 832 acpi_allocate_resources(ACPI_HANDLE handle) 833 { 834 ACPI_BUFFER bufp, bufc, bufn; 835 ACPI_RESOURCE *resp, *resc, *resn; 836 ACPI_RESOURCE_IRQ *irq; 837 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 838 ACPI_STATUS rv; 839 uint delta; 840 841 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 842 if (ACPI_FAILURE(rv)) 843 goto out; 844 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 845 if (ACPI_FAILURE(rv)) { 846 goto out1; 847 } 848 849 bufn.Length = 1000; 850 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 851 resp = bufp.Pointer; 852 resc = bufc.Pointer; 853 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 854 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 855 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 856 resp = ACPI_NEXT_RESOURCE(resp); 857 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 858 break; 859 /* Found identical Id */ 860 resn->Type = resc->Type; 861 switch (resc->Type) { 862 case ACPI_RESOURCE_TYPE_IRQ: 863 memcpy(&resn->Data, &resp->Data, 864 sizeof(ACPI_RESOURCE_IRQ)); 865 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 866 irq->Interrupts[0] = 867 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 868 Interrupts[irq->InterruptCount-1]; 869 irq->InterruptCount = 1; 870 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 871 break; 872 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 873 memcpy(&resn->Data, &resp->Data, 874 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 875 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 876 #if 0 877 /* 878 * XXX: Not duplicating the interrupt logic above 879 * because its not clear what it accomplishes. 880 */ 881 xirq->Interrupts[0] = 882 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 883 Interrupts[irq->NumberOfInterrupts-1]; 884 xirq->NumberOfInterrupts = 1; 885 #endif 886 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 887 break; 888 case ACPI_RESOURCE_TYPE_IO: 889 memcpy(&resn->Data, &resp->Data, 890 sizeof(ACPI_RESOURCE_IO)); 891 resn->Length = resp->Length; 892 break; 893 default: 894 aprint_error_dev(acpi_softc->sc_dev, 895 "%s: invalid type %u\n", __func__, resc->Type); 896 rv = AE_BAD_DATA; 897 goto out2; 898 } 899 resc = ACPI_NEXT_RESOURCE(resc); 900 resn = ACPI_NEXT_RESOURCE(resn); 901 resp = ACPI_NEXT_RESOURCE(resp); 902 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 903 if (delta >= 904 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 905 bufn.Length *= 2; 906 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 907 M_ACPI, M_WAITOK); 908 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 909 delta); 910 } 911 } 912 913 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 914 aprint_error_dev(acpi_softc->sc_dev, 915 "%s: resc not exhausted\n", __func__); 916 rv = AE_BAD_DATA; 917 goto out3; 918 } 919 920 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 921 rv = AcpiSetCurrentResources(handle, &bufn); 922 923 if (ACPI_FAILURE(rv)) 924 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 925 "resources: %s\n", __func__, AcpiFormatException(rv)); 926 927 out3: 928 free(bufn.Pointer, M_ACPI); 929 out2: 930 ACPI_FREE(bufc.Pointer); 931 out1: 932 ACPI_FREE(bufp.Pointer); 933 out: 934 return rv; 935 } 936 #endif /* ACPI_ACTIVATE_DEV */ 937 938 /* 939 * Device attachment. 940 */ 941 static int 942 acpi_rescan(device_t self, const char *ifattr, const int *locators) 943 { 944 struct acpi_softc *sc = device_private(self); 945 946 if (ifattr_match(ifattr, "acpinodebus")) 947 acpi_rescan_nodes(sc); 948 949 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 950 sc->sc_apmbus = config_found_ia(sc->sc_dev, 951 "acpiapmbus", NULL, NULL); 952 953 return 0; 954 } 955 956 static void 957 acpi_rescan_nodes(struct acpi_softc *sc) 958 { 959 struct acpi_attach_args aa; 960 struct acpi_devnode *ad; 961 ACPI_DEVICE_INFO *di; 962 963 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 964 965 if (ad->ad_device != NULL) 966 continue; 967 968 /* 969 * There is a bug in ACPICA: it defines the type 970 * of the scopes incorrectly for its own reasons. 971 */ 972 if (acpi_is_scope(ad) != false) 973 continue; 974 975 di = ad->ad_devinfo; 976 977 /* 978 * We only attach devices which are present, enabled, and 979 * functioning properly. However, if a device is enabled, 980 * it is decoding resources and we should claim these, 981 * if possible. This requires changes to bus_space(9). 982 */ 983 if (di->Type == ACPI_TYPE_DEVICE) { 984 985 if ((di->Valid & ACPI_VALID_STA) != 0 && 986 (di->CurrentStatus & ACPI_STA_OK) != ACPI_STA_OK) 987 continue; 988 } 989 990 /* 991 * The same problem as above. As for example 992 * thermal zones and power resources do not 993 * have a valid HID, only evaluate devices. 994 */ 995 if (di->Type == ACPI_TYPE_DEVICE && 996 (di->Valid & ACPI_VALID_HID) == 0) 997 continue; 998 999 /* 1000 * Handled internally. 1001 */ 1002 if (di->Type == ACPI_TYPE_POWER) 1003 continue; 1004 1005 /* 1006 * Skip ignored HIDs. 1007 */ 1008 if (acpi_match_hid(di, acpi_ignored_ids)) 1009 continue; 1010 1011 aa.aa_node = ad; 1012 aa.aa_iot = sc->sc_iot; 1013 aa.aa_memt = sc->sc_memt; 1014 aa.aa_pc = sc->sc_pc; 1015 aa.aa_pciflags = sc->sc_pciflags; 1016 aa.aa_ic = sc->sc_ic; 1017 1018 ad->ad_device = config_found_ia(sc->sc_dev, 1019 "acpinodebus", &aa, acpi_print); 1020 } 1021 } 1022 1023 static void 1024 acpi_rescan_capabilities(struct acpi_softc *sc) 1025 { 1026 struct acpi_devnode *ad; 1027 ACPI_HANDLE tmp; 1028 ACPI_STATUS rv; 1029 1030 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1031 1032 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 1033 continue; 1034 1035 /* 1036 * Scan power resource capabilities. 1037 * 1038 * If any power states are supported, 1039 * at least _PR0 and _PR3 must be present. 1040 */ 1041 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 1042 1043 if (ACPI_SUCCESS(rv)) { 1044 ad->ad_flags |= ACPI_DEVICE_POWER; 1045 acpi_power_add(ad); 1046 } 1047 1048 /* 1049 * Scan wake-up capabilities. 1050 */ 1051 rv = AcpiGetHandle(ad->ad_handle, "_PRW", &tmp); 1052 1053 if (ACPI_SUCCESS(rv)) { 1054 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 1055 acpi_wakedev_add(ad); 1056 } 1057 } 1058 } 1059 1060 static int 1061 acpi_print(void *aux, const char *pnp) 1062 { 1063 struct acpi_attach_args *aa = aux; 1064 ACPI_STATUS rv; 1065 1066 if (pnp) { 1067 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1068 char *pnpstr = 1069 aa->aa_node->ad_devinfo->HardwareId.String; 1070 ACPI_BUFFER buf; 1071 1072 aprint_normal("%s (%s) ", aa->aa_node->ad_name, 1073 pnpstr); 1074 1075 rv = acpi_eval_struct(aa->aa_node->ad_handle, 1076 "_STR", &buf); 1077 if (ACPI_SUCCESS(rv)) { 1078 ACPI_OBJECT *obj = buf.Pointer; 1079 switch (obj->Type) { 1080 case ACPI_TYPE_STRING: 1081 aprint_normal("[%s] ", obj->String.Pointer); 1082 break; 1083 case ACPI_TYPE_BUFFER: 1084 aprint_normal("buffer %p ", obj->Buffer.Pointer); 1085 break; 1086 default: 1087 aprint_normal("type %u ",obj->Type); 1088 break; 1089 } 1090 ACPI_FREE(buf.Pointer); 1091 } 1092 else 1093 acpi_print_dev(pnpstr); 1094 1095 aprint_normal("at %s", pnp); 1096 } else if (aa->aa_node->ad_devinfo->Type != ACPI_TYPE_DEVICE) { 1097 aprint_normal("%s (ACPI Object Type '%s' " 1098 "[0x%02x]) ", aa->aa_node->ad_name, 1099 AcpiUtGetTypeName(aa->aa_node->ad_devinfo->Type), 1100 aa->aa_node->ad_devinfo->Type); 1101 aprint_normal("at %s", pnp); 1102 } else 1103 return 0; 1104 } else { 1105 aprint_normal(" (%s", aa->aa_node->ad_name); 1106 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1107 aprint_normal(", %s", aa->aa_node->ad_devinfo->HardwareId.String); 1108 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_UID) { 1109 const char *uid; 1110 1111 uid = aa->aa_node->ad_devinfo->UniqueId.String; 1112 if (uid[0] == '\0') 1113 uid = "<null>"; 1114 aprint_normal("-%s", uid); 1115 } 1116 } 1117 aprint_normal(")"); 1118 } 1119 1120 return UNCONF; 1121 } 1122 1123 /* 1124 * Notify. 1125 */ 1126 static void 1127 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1128 { 1129 struct acpi_softc *sc = acpi_softc; 1130 struct acpi_devnode *ad; 1131 1132 KASSERT(sc != NULL); 1133 KASSERT(aux == NULL); 1134 KASSERT(acpi_active != 0); 1135 1136 if (acpi_suspended != 0) 1137 return; 1138 1139 /* 1140 * System: 0x00 - 0x7F. 1141 * Device: 0x80 - 0xFF. 1142 */ 1143 switch (event) { 1144 1145 case ACPI_NOTIFY_BUS_CHECK: 1146 case ACPI_NOTIFY_DEVICE_CHECK: 1147 case ACPI_NOTIFY_DEVICE_WAKE: 1148 case ACPI_NOTIFY_EJECT_REQUEST: 1149 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1150 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1151 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1152 case ACPI_NOTIFY_POWER_FAULT: 1153 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1154 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1155 case ACPI_NOTIFY_RESERVED: 1156 case ACPI_NOTIFY_LOCALITY_UPDATE: 1157 break; 1158 } 1159 1160 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1161 "%s (%p)\n", event, acpi_name(handle), handle)); 1162 1163 /* 1164 * We deliver notifications only to drivers 1165 * that have been succesfully attached and 1166 * that have registered a handler with us. 1167 * The opaque pointer is always the device_t. 1168 */ 1169 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1170 1171 if (ad->ad_device == NULL) 1172 continue; 1173 1174 if (ad->ad_notify == NULL) 1175 continue; 1176 1177 if (ad->ad_handle != handle) 1178 continue; 1179 1180 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1181 1182 return; 1183 } 1184 1185 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1186 "for %s (%p)\n", event, acpi_name(handle), handle); 1187 } 1188 1189 bool 1190 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1191 { 1192 struct acpi_softc *sc = acpi_softc; 1193 1194 KASSERT(sc != NULL); 1195 KASSERT(acpi_active != 0); 1196 1197 if (acpi_suspended != 0) 1198 goto fail; 1199 1200 if (ad == NULL || notify == NULL) 1201 goto fail; 1202 1203 ad->ad_notify = notify; 1204 1205 return true; 1206 1207 fail: 1208 aprint_error_dev(sc->sc_dev, "failed to register notify " 1209 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1210 1211 return false; 1212 } 1213 1214 void 1215 acpi_deregister_notify(struct acpi_devnode *ad) 1216 { 1217 1218 ad->ad_notify = NULL; 1219 } 1220 1221 /* 1222 * Fixed buttons. 1223 */ 1224 static void 1225 acpi_register_fixed_button(struct acpi_softc *sc, int event) 1226 { 1227 struct sysmon_pswitch *smpsw; 1228 ACPI_STATUS rv; 1229 int type; 1230 1231 switch (event) { 1232 1233 case ACPI_EVENT_POWER_BUTTON: 1234 1235 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1236 return; 1237 1238 type = PSWITCH_TYPE_POWER; 1239 smpsw = &sc->sc_smpsw_power; 1240 break; 1241 1242 case ACPI_EVENT_SLEEP_BUTTON: 1243 1244 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1245 return; 1246 1247 type = PSWITCH_TYPE_SLEEP; 1248 smpsw = &sc->sc_smpsw_sleep; 1249 break; 1250 1251 default: 1252 rv = AE_TYPE; 1253 goto fail; 1254 } 1255 1256 smpsw->smpsw_type = type; 1257 smpsw->smpsw_name = device_xname(sc->sc_dev); 1258 1259 if (sysmon_pswitch_register(smpsw) != 0) { 1260 rv = AE_ERROR; 1261 goto fail; 1262 } 1263 1264 rv = AcpiInstallFixedEventHandler(event, 1265 acpi_fixed_button_handler, smpsw); 1266 1267 if (ACPI_FAILURE(rv)) { 1268 sysmon_pswitch_unregister(smpsw); 1269 goto fail; 1270 } 1271 1272 aprint_debug_dev(sc->sc_dev, "fixed %s button present\n", 1273 (type != ACPI_EVENT_SLEEP_BUTTON) ? "power" : "sleep"); 1274 1275 return; 1276 1277 fail: 1278 aprint_error_dev(sc->sc_dev, "failed to register " 1279 "fixed event: %s\n", AcpiFormatException(rv)); 1280 } 1281 1282 static void 1283 acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1284 { 1285 struct sysmon_pswitch *smpsw; 1286 ACPI_STATUS rv; 1287 1288 switch (event) { 1289 1290 case ACPI_EVENT_POWER_BUTTON: 1291 smpsw = &sc->sc_smpsw_power; 1292 1293 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1294 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1295 return; 1296 } 1297 1298 break; 1299 1300 case ACPI_EVENT_SLEEP_BUTTON: 1301 smpsw = &sc->sc_smpsw_sleep; 1302 1303 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1304 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1305 return; 1306 } 1307 1308 break; 1309 1310 default: 1311 rv = AE_TYPE; 1312 goto fail; 1313 } 1314 1315 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1316 1317 if (ACPI_SUCCESS(rv)) { 1318 sysmon_pswitch_unregister(smpsw); 1319 return; 1320 } 1321 1322 fail: 1323 aprint_error_dev(sc->sc_dev, "failed to deregister " 1324 "fixed event: %s\n", AcpiFormatException(rv)); 1325 } 1326 1327 static uint32_t 1328 acpi_fixed_button_handler(void *context) 1329 { 1330 static const int handler = OSL_NOTIFY_HANDLER; 1331 struct sysmon_pswitch *smpsw = context; 1332 1333 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1334 1335 return ACPI_INTERRUPT_HANDLED; 1336 } 1337 1338 static void 1339 acpi_fixed_button_pressed(void *context) 1340 { 1341 struct sysmon_pswitch *smpsw = context; 1342 1343 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1344 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1345 "power" : "sleep")); 1346 1347 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1348 } 1349 1350 /* 1351 * Sleep. 1352 */ 1353 static void 1354 acpi_sleep_init(struct acpi_softc *sc) 1355 { 1356 uint8_t a, b, i; 1357 ACPI_STATUS rv; 1358 1359 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1360 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1361 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1362 1363 /* 1364 * Evaluate supported sleep states. 1365 */ 1366 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1367 1368 rv = AcpiGetSleepTypeData(i, &a, &b); 1369 1370 if (ACPI_SUCCESS(rv)) 1371 sc->sc_sleepstates |= __BIT(i); 1372 } 1373 } 1374 1375 void 1376 acpi_enter_sleep_state(struct acpi_softc *sc, int state) 1377 { 1378 ACPI_STATUS rv; 1379 int err; 1380 1381 if (state == sc->sc_sleepstate) 1382 return; 1383 1384 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1385 1386 switch (state) { 1387 1388 case ACPI_STATE_S0: 1389 sc->sc_sleepstate = ACPI_STATE_S0; 1390 return; 1391 1392 case ACPI_STATE_S1: 1393 case ACPI_STATE_S2: 1394 case ACPI_STATE_S3: 1395 case ACPI_STATE_S4: 1396 1397 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1398 aprint_error_dev(sc->sc_dev, "sleep state " 1399 "S%d is not available\n", state); 1400 return; 1401 } 1402 1403 /* 1404 * Evaluate the _TTS method. This should be done before 1405 * pmf_system_suspend(9) and the evaluation of _PTS. 1406 * We should also re-evaluate this once we return to 1407 * S0 or if we abort the sleep state transition in the 1408 * middle (see ACPI 3.0, section 7.3.6). In reality, 1409 * however, the _TTS method is seldom seen in the field. 1410 */ 1411 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1412 1413 if (ACPI_SUCCESS(rv)) 1414 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1415 1416 if (state != ACPI_STATE_S1 && 1417 pmf_system_suspend(PMF_Q_NONE) != true) { 1418 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1419 break; 1420 } 1421 1422 /* 1423 * This will evaluate the _PTS and _SST methods, 1424 * but unlike the documentation claims, not _GTS, 1425 * which is evaluated in AcpiEnterSleepState(). 1426 * This must be called with interrupts enabled. 1427 */ 1428 rv = AcpiEnterSleepStatePrep(state); 1429 1430 if (ACPI_FAILURE(rv)) { 1431 aprint_error_dev(sc->sc_dev, "failed to prepare " 1432 "S%d: %s\n", state, AcpiFormatException(rv)); 1433 break; 1434 } 1435 1436 /* 1437 * After the _PTS method has been evaluated, we can 1438 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1439 */ 1440 acpi_wakedev_commit(sc, state); 1441 1442 sc->sc_sleepstate = state; 1443 1444 if (state == ACPI_STATE_S1) { 1445 1446 /* Just enter the state. */ 1447 acpi_md_OsDisableInterrupt(); 1448 rv = AcpiEnterSleepState(state); 1449 1450 if (ACPI_FAILURE(rv)) 1451 aprint_error_dev(sc->sc_dev, "failed to " 1452 "enter S1: %s\n", AcpiFormatException(rv)); 1453 1454 (void)AcpiLeaveSleepState(state); 1455 1456 } else { 1457 1458 err = acpi_md_sleep(state); 1459 1460 if (state == ACPI_STATE_S4) 1461 AcpiEnable(); 1462 1463 pmf_system_bus_resume(PMF_Q_NONE); 1464 (void)AcpiLeaveSleepState(state); 1465 pmf_system_resume(PMF_Q_NONE); 1466 } 1467 1468 break; 1469 1470 case ACPI_STATE_S5: 1471 1472 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1473 1474 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1475 1476 if (ACPI_FAILURE(rv)) { 1477 aprint_error_dev(sc->sc_dev, "failed to prepare " 1478 "S%d: %s\n", state, AcpiFormatException(rv)); 1479 break; 1480 } 1481 1482 DELAY(1000000); 1483 1484 sc->sc_sleepstate = state; 1485 acpi_md_OsDisableInterrupt(); 1486 1487 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1488 1489 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1490 1491 break; 1492 } 1493 1494 sc->sc_sleepstate = ACPI_STATE_S0; 1495 1496 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1497 } 1498 1499 /* 1500 * Sysctl. 1501 */ 1502 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1503 { 1504 const struct sysctlnode *mnode, *rnode; 1505 int err; 1506 1507 err = sysctl_createv(clog, 0, NULL, &rnode, 1508 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", 1509 NULL, NULL, 0, NULL, 0, 1510 CTL_HW, CTL_EOL); 1511 1512 if (err != 0) 1513 return; 1514 1515 err = sysctl_createv(clog, 0, &rnode, &rnode, 1516 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1517 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1518 NULL, 0, NULL, 0, 1519 CTL_CREATE, CTL_EOL); 1520 1521 if (err != 0) 1522 return; 1523 1524 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1525 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1526 "root", SYSCTL_DESCR("ACPI root pointer"), 1527 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1528 CTL_CREATE, CTL_EOL); 1529 1530 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1531 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1532 "supported_states", SYSCTL_DESCR("Supported system states"), 1533 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1534 CTL_CREATE, CTL_EOL); 1535 1536 err = sysctl_createv(NULL, 0, NULL, &mnode, 1537 CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep", 1538 NULL, NULL, 0, NULL, 0, 1539 CTL_MACHDEP, CTL_EOL); 1540 1541 if (err == 0) { 1542 1543 (void)sysctl_createv(NULL, 0, &mnode, NULL, 1544 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1545 "sleep_state", SYSCTL_DESCR("System sleep state"), 1546 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1547 CTL_CREATE, CTL_EOL); 1548 } 1549 1550 err = sysctl_createv(clog, 0, &rnode, &rnode, 1551 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1552 "stat", SYSCTL_DESCR("ACPI statistics"), 1553 NULL, 0, NULL, 0, 1554 CTL_CREATE, CTL_EOL); 1555 1556 if (err != 0) 1557 return; 1558 1559 (void)sysctl_createv(clog, 0, &rnode, NULL, 1560 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1561 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1562 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1563 CTL_CREATE, CTL_EOL); 1564 1565 (void)sysctl_createv(clog, 0, &rnode, NULL, 1566 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1567 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1568 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1569 CTL_CREATE, CTL_EOL); 1570 1571 (void)sysctl_createv(clog, 0, &rnode, NULL, 1572 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1573 "fixed", SYSCTL_DESCR("Number of fixed events"), 1574 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1575 CTL_CREATE, CTL_EOL); 1576 1577 (void)sysctl_createv(clog, 0, &rnode, NULL, 1578 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1579 "method", SYSCTL_DESCR("Number of methods executed"), 1580 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1581 CTL_CREATE, CTL_EOL); 1582 1583 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1584 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1585 } 1586 1587 static int 1588 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1589 { 1590 struct sysctlnode node; 1591 uint64_t t; 1592 int err, i; 1593 1594 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1595 t += AcpiFixedEventCount[i]; 1596 1597 node = *rnode; 1598 node.sysctl_data = &t; 1599 1600 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1601 1602 if (err || newp == NULL) 1603 return err; 1604 1605 return 0; 1606 } 1607 1608 static int 1609 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1610 { 1611 struct acpi_softc *sc = acpi_softc; 1612 struct sysctlnode node; 1613 int err, t; 1614 1615 if (acpi_softc == NULL) 1616 return ENOSYS; 1617 1618 node = *rnode; 1619 t = sc->sc_sleepstate; 1620 node.sysctl_data = &t; 1621 1622 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1623 1624 if (err || newp == NULL) 1625 return err; 1626 1627 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1628 return EINVAL; 1629 1630 acpi_enter_sleep_state(sc, t); 1631 1632 return 0; 1633 } 1634 1635 static int 1636 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1637 { 1638 struct acpi_softc *sc = acpi_softc; 1639 struct sysctlnode node; 1640 char t[3 * 6 + 1]; 1641 int err; 1642 1643 if (acpi_softc == NULL) 1644 return ENOSYS; 1645 1646 (void)memset(t, '\0', sizeof(t)); 1647 1648 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1649 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1650 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1651 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1652 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1653 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1654 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1655 1656 node = *rnode; 1657 node.sysctl_data = &t; 1658 1659 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1660 1661 if (err || newp == NULL) 1662 return err; 1663 1664 return 0; 1665 } 1666 1667 /* 1668 * Miscellaneous. 1669 */ 1670 static bool 1671 acpi_is_scope(struct acpi_devnode *ad) 1672 { 1673 int i; 1674 1675 /* 1676 * Return true if the node is a root scope. 1677 */ 1678 if (ad->ad_parent == NULL) 1679 return false; 1680 1681 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1682 return false; 1683 1684 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1685 1686 if (acpi_scopes[i] == NULL) 1687 continue; 1688 1689 if (ad->ad_handle == acpi_scopes[i]) 1690 return true; 1691 } 1692 1693 return false; 1694 } 1695 1696 ACPI_PHYSICAL_ADDRESS 1697 acpi_OsGetRootPointer(void) 1698 { 1699 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1700 1701 /* 1702 * We let MD code handle this since there are multiple ways to do it: 1703 * 1704 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1705 * 1706 * IA-64: Use the EFI. 1707 */ 1708 PhysicalAddress = acpi_md_OsGetRootPointer(); 1709 1710 if (acpi_root_pointer == 0) 1711 acpi_root_pointer = PhysicalAddress; 1712 1713 return PhysicalAddress; 1714 } 1715 1716 static ACPI_TABLE_HEADER * 1717 acpi_map_rsdt(void) 1718 { 1719 ACPI_PHYSICAL_ADDRESS paddr; 1720 ACPI_TABLE_RSDP *rsdp; 1721 1722 paddr = AcpiOsGetRootPointer(); 1723 1724 if (paddr == 0) 1725 return NULL; 1726 1727 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1728 1729 if (rsdp == NULL) 1730 return NULL; 1731 1732 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1733 paddr = rsdp->XsdtPhysicalAddress; 1734 else 1735 paddr = rsdp->RsdtPhysicalAddress; 1736 1737 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1738 1739 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1740 } 1741 1742 static void 1743 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1744 { 1745 1746 if (rsdt == NULL) 1747 return; 1748 1749 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1750 } 1751
Indexes created Mon Sep 22 05:09:51 GMT 2025