acpi.c revision 1.192
1 /* $NetBSD: acpi.c,v 1.192 2010/04/26 04:31:09 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 1.192 2010/04/26 04:31:09 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/mutex.h> 78 #include <sys/sysctl.h> 79 #include <sys/systm.h> 80 81 #include <dev/acpi/acpireg.h> 82 #include <dev/acpi/acpivar.h> 83 #include <dev/acpi/acpi_osd.h> 84 #include <dev/acpi/acpi_pci.h> 85 #include <dev/acpi/acpi_power.h> 86 #include <dev/acpi/acpi_timer.h> 87 #include <dev/acpi/acpi_wakedev.h> 88 89 #ifdef ACPIVERBOSE 90 #include <dev/acpi/acpidevs_data.h> 91 #endif 92 93 #define _COMPONENT ACPI_BUS_COMPONENT 94 ACPI_MODULE_NAME ("acpi") 95 96 #if defined(ACPI_PCI_FIXUP) 97 #error The option ACPI_PCI_FIXUP has been obsoleted by PCI_INTR_FIXUP_DISABLED. Please adjust your kernel configuration file. 98 #endif 99 100 #ifdef PCI_INTR_FIXUP_DISABLED 101 #include <dev/pci/pcidevs.h> 102 #endif 103 104 MALLOC_DECLARE(M_ACPI); 105 106 #include <machine/acpi_machdep.h> 107 108 #ifdef ACPI_DEBUGGER 109 #define ACPI_DBGR_INIT 0x01 110 #define ACPI_DBGR_TABLES 0x02 111 #define ACPI_DBGR_ENABLE 0x04 112 #define ACPI_DBGR_PROBE 0x08 113 #define ACPI_DBGR_RUNNING 0x10 114 115 static int acpi_dbgr = 0x00; 116 #endif 117 118 /* 119 * This is a flag we set when the ACPI subsystem is active. Machine 120 * dependent code may wish to skip other steps (such as attaching 121 * subsystems that ACPI supercedes) when ACPI is active. 122 */ 123 int acpi_active; 124 int acpi_force_load; 125 int acpi_suspended = 0; 126 127 struct acpi_softc *acpi_softc; 128 static uint64_t acpi_root_pointer; 129 extern kmutex_t acpi_interrupt_list_mtx; 130 static ACPI_HANDLE acpi_scopes[4]; 131 132 /* 133 * This structure provides a context for the ACPI 134 * namespace walk performed in acpi_build_tree(). 135 */ 136 struct acpi_walkcontext { 137 struct acpi_softc *aw_sc; 138 struct acpi_devnode *aw_parent; 139 }; 140 141 /* 142 * Ignored HIDs. 143 */ 144 static const char * const acpi_ignored_ids[] = { 145 #if defined(i386) || defined(x86_64) 146 "PNP0000", /* AT interrupt controller is handled internally */ 147 "PNP0200", /* AT DMA controller is handled internally */ 148 "PNP0A??", /* PCI Busses are handled internally */ 149 "PNP0B00", /* AT RTC is handled internally */ 150 "PNP0C01", /* No "System Board" driver */ 151 "PNP0C02", /* No "PnP motherboard register resources" driver */ 152 "PNP0C0B", /* No need for "ACPI fan" driver */ 153 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 154 "IFX0102", /* No driver for Infineon TPM */ 155 "INT0800", /* No driver for Intel Firmware Hub device */ 156 #endif 157 #if defined(x86_64) 158 "PNP0C04", /* FPU is handled internally */ 159 #endif 160 NULL 161 }; 162 163 static int acpi_match(device_t, cfdata_t, void *); 164 static int acpi_submatch(device_t, cfdata_t, const int *, void *); 165 static void acpi_attach(device_t, device_t, void *); 166 static int acpi_detach(device_t, int); 167 static void acpi_childdet(device_t, device_t); 168 static bool acpi_suspend(device_t, const pmf_qual_t *); 169 static bool acpi_resume(device_t, const pmf_qual_t *); 170 171 static void acpi_build_tree(struct acpi_softc *); 172 static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, 173 void *, void **); 174 static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t, 175 void *, void **); 176 177 #ifdef ACPI_ACTIVATE_DEV 178 static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **); 179 static ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE); 180 #endif 181 182 static int acpi_rescan(device_t, const char *, const int *); 183 static void acpi_rescan1(struct acpi_softc *, 184 const char *, const int *); 185 static void acpi_rescan_nodes(struct acpi_softc *); 186 static void acpi_rescan_capabilities(struct acpi_softc *); 187 static int acpi_print(void *aux, const char *); 188 189 #ifdef ACPIVERBOSE 190 static void acpi_print_devnodes(struct acpi_softc *); 191 static void acpi_print_tree(struct acpi_devnode *, uint32_t); 192 #endif 193 194 static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); 195 196 static void acpi_register_fixed_button(struct acpi_softc *, int); 197 static void acpi_deregister_fixed_button(struct acpi_softc *, int); 198 static uint32_t acpi_fixed_button_handler(void *); 199 static void acpi_fixed_button_pressed(void *); 200 201 static void acpi_sleep_init(struct acpi_softc *); 202 203 static int sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS); 204 static int sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS); 205 static int sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS); 206 207 static bool acpi_is_scope(struct acpi_devnode *); 208 static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 209 static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 210 211 extern struct cfdriver acpi_cd; 212 213 CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 214 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 215 216 /* 217 * Probe for ACPI support. 218 * 219 * This is called by the machine-dependent ACPI front-end. 220 * Note: this is not an autoconfiguration interface function. 221 */ 222 int 223 acpi_probe(void) 224 { 225 ACPI_TABLE_HEADER *rsdt; 226 const char *func; 227 static int once; 228 bool initialized; 229 ACPI_STATUS rv; 230 231 if (once != 0) 232 panic("%s: already probed", __func__); 233 234 once = 1; 235 func = NULL; 236 initialized = false; 237 238 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 239 240 /* 241 * Start up ACPICA. 242 */ 243 #ifdef ACPI_DEBUGGER 244 if (acpi_dbgr & ACPI_DBGR_INIT) 245 acpi_osd_debugger(); 246 #endif 247 248 CTASSERT(TRUE == true); 249 CTASSERT(FALSE == false); 250 251 AcpiGbl_AllMethodsSerialized = false; 252 AcpiGbl_EnableInterpreterSlack = true; 253 254 rv = AcpiInitializeSubsystem(); 255 256 if (ACPI_SUCCESS(rv)) 257 initialized = true; 258 else { 259 func = "AcpiInitializeSubsystem()"; 260 goto fail; 261 } 262 263 /* 264 * Allocate space for RSDT/XSDT and DSDT, 265 * but allow resizing if more tables exist. 266 */ 267 rv = AcpiInitializeTables(NULL, 2, true); 268 269 if (ACPI_FAILURE(rv)) { 270 func = "AcpiInitializeTables()"; 271 goto fail; 272 } 273 274 #ifdef ACPI_DEBUGGER 275 if (acpi_dbgr & ACPI_DBGR_TABLES) 276 acpi_osd_debugger(); 277 #endif 278 279 rv = AcpiLoadTables(); 280 281 if (ACPI_FAILURE(rv)) { 282 func = "AcpiLoadTables()"; 283 goto fail; 284 } 285 286 rsdt = acpi_map_rsdt(); 287 288 if (rsdt == NULL) { 289 func = "acpi_map_rsdt()"; 290 rv = AE_ERROR; 291 goto fail; 292 } 293 294 if (acpi_force_load == 0 && (acpi_find_quirks() & ACPI_QUIRK_BROKEN)) { 295 aprint_normal("ACPI: BIOS is listed as broken:\n"); 296 aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 297 "AslId <%4.4s,%08x>\n", 298 rsdt->OemId, rsdt->OemTableId, 299 rsdt->OemRevision, 300 rsdt->AslCompilerId, 301 rsdt->AslCompilerRevision); 302 aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n"); 303 acpi_unmap_rsdt(rsdt); 304 AcpiTerminate(); 305 return 0; 306 } 307 308 acpi_unmap_rsdt(rsdt); 309 310 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 311 312 if (ACPI_FAILURE(rv)) { 313 func = "AcpiEnableSubsystem()"; 314 goto fail; 315 } 316 317 /* 318 * Looks like we have ACPI! 319 */ 320 return 1; 321 322 fail: 323 KASSERT(rv != AE_OK); 324 KASSERT(func != NULL); 325 326 aprint_error("%s: failed to probe ACPI: %s\n", 327 func, AcpiFormatException(rv)); 328 329 if (initialized != false) 330 (void)AcpiTerminate(); 331 332 return 0; 333 } 334 335 int 336 acpi_check(device_t parent, const char *ifattr) 337 { 338 return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); 339 } 340 341 /* 342 * Autoconfiguration. 343 */ 344 static int 345 acpi_match(device_t parent, cfdata_t match, void *aux) 346 { 347 /* 348 * XXX: Nada; MD code has called acpi_probe(). 349 */ 350 return 1; 351 } 352 353 static int 354 acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 355 { 356 struct cfattach *ca; 357 358 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 359 360 return (ca == &acpi_ca); 361 } 362 363 static void 364 acpi_attach(device_t parent, device_t self, void *aux) 365 { 366 struct acpi_softc *sc = device_private(self); 367 struct acpibus_attach_args *aa = aux; 368 ACPI_TABLE_HEADER *rsdt; 369 ACPI_STATUS rv; 370 371 aprint_naive("\n"); 372 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 373 374 if (acpi_softc != NULL) 375 panic("%s: already attached", __func__); 376 377 rsdt = acpi_map_rsdt(); 378 379 if (rsdt == NULL) 380 aprint_error_dev(self, "X/RSDT: Not found\n"); 381 else { 382 aprint_verbose_dev(self, 383 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 384 rsdt->OemId, rsdt->OemTableId, 385 rsdt->OemRevision, 386 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 387 } 388 389 acpi_unmap_rsdt(rsdt); 390 391 sc->sc_dev = self; 392 sc->sc_root = NULL; 393 394 sc->sc_sleepstate = ACPI_STATE_S0; 395 sc->sc_quirks = acpi_find_quirks(); 396 397 sysmon_power_settype("acpi"); 398 399 sc->sc_iot = aa->aa_iot; 400 sc->sc_memt = aa->aa_memt; 401 sc->sc_pc = aa->aa_pc; 402 sc->sc_pciflags = aa->aa_pciflags; 403 sc->sc_ic = aa->aa_ic; 404 405 SIMPLEQ_INIT(&sc->ad_head); 406 407 acpi_softc = sc; 408 409 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) 410 aprint_error_dev(self, "couldn't establish power handler\n"); 411 412 /* 413 * Bring ACPI on-line. 414 */ 415 #ifdef ACPI_DEBUGGER 416 if (acpi_dbgr & ACPI_DBGR_ENABLE) 417 acpi_osd_debugger(); 418 #endif 419 420 #define ACPI_ENABLE_PHASE1 \ 421 (ACPI_NO_HANDLER_INIT | ACPI_NO_EVENT_INIT) 422 #define ACPI_ENABLE_PHASE2 \ 423 (ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE | \ 424 ACPI_NO_ADDRESS_SPACE_INIT) 425 426 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE1); 427 428 if (ACPI_FAILURE(rv)) 429 goto fail; 430 431 acpi_md_callback(); 432 433 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE2); 434 435 if (ACPI_FAILURE(rv)) 436 goto fail; 437 438 /* 439 * Early EC handler initialization if ECDT table is available. 440 */ 441 config_found_ia(self, "acpiecdtbus", aa, NULL); 442 443 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 444 445 if (ACPI_FAILURE(rv)) 446 goto fail; 447 448 /* 449 * Install global notify handlers. 450 */ 451 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 452 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 453 454 if (ACPI_FAILURE(rv)) 455 goto fail; 456 457 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 458 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 459 460 if (ACPI_FAILURE(rv)) 461 goto fail; 462 463 acpi_active = 1; 464 465 /* Show SCI interrupt. */ 466 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 467 AcpiGbl_FADT.SciInterrupt); 468 469 /* 470 * Install fixed-event handlers. 471 */ 472 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 473 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 474 475 acpitimer_init(); 476 477 #ifdef ACPI_DEBUGGER 478 if (acpi_dbgr & ACPI_DBGR_PROBE) 479 acpi_osd_debugger(); 480 #endif 481 482 /* 483 * Scan the namespace and build our device tree. 484 */ 485 acpi_build_tree(sc); 486 acpi_sleep_init(sc); 487 488 #ifdef ACPI_DEBUGGER 489 if (acpi_dbgr & ACPI_DBGR_RUNNING) 490 acpi_osd_debugger(); 491 #endif 492 493 #ifdef ACPI_DEBUG 494 acpi_debug_init(); 495 #endif 496 497 return; 498 499 fail: 500 KASSERT(rv != AE_OK); 501 502 aprint_error("%s: failed to initialize ACPI: %s\n", 503 __func__, AcpiFormatException(rv)); 504 } 505 506 /* 507 * XXX: This is incomplete. 508 */ 509 static int 510 acpi_detach(device_t self, int flags) 511 { 512 struct acpi_softc *sc = device_private(self); 513 ACPI_STATUS rv; 514 int rc; 515 516 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 517 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 518 519 if (ACPI_FAILURE(rv)) 520 return EBUSY; 521 522 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 523 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 524 525 if (ACPI_FAILURE(rv)) 526 return EBUSY; 527 528 if ((rc = config_detach_children(self, flags)) != 0) 529 return rc; 530 531 if ((rc = acpitimer_detach()) != 0) 532 return rc; 533 534 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 535 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 536 537 pmf_device_deregister(self); 538 539 acpi_softc = NULL; 540 541 return 0; 542 } 543 544 /* 545 * XXX: Need to reclaim any resources? Yes. 546 */ 547 static void 548 acpi_childdet(device_t self, device_t child) 549 { 550 struct acpi_softc *sc = device_private(self); 551 struct acpi_devnode *ad; 552 553 if (sc->sc_apmbus == child) 554 sc->sc_apmbus = NULL; 555 556 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 557 558 if (ad->ad_device == child) 559 ad->ad_device = NULL; 560 } 561 } 562 563 static bool 564 acpi_suspend(device_t dv, const pmf_qual_t *qual) 565 { 566 567 acpi_suspended = 1; 568 569 return true; 570 } 571 572 static bool 573 acpi_resume(device_t dv, const pmf_qual_t *qual) 574 { 575 576 acpi_suspended = 0; 577 578 return true; 579 } 580 581 /* 582 * Namespace scan. 583 */ 584 static void 585 acpi_build_tree(struct acpi_softc *sc) 586 { 587 struct acpi_walkcontext awc; 588 589 /* 590 * Get the root scope handles. 591 */ 592 KASSERT(__arraycount(acpi_scopes) == 4); 593 594 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 595 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 596 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 597 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 598 599 /* 600 * Make the root node. 601 */ 602 awc.aw_sc = sc; 603 awc.aw_parent = NULL; 604 605 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 606 607 KASSERT(sc->sc_root == NULL); 608 KASSERT(awc.aw_parent != NULL); 609 610 sc->sc_root = awc.aw_parent; 611 612 /* 613 * Build the internal namespace. 614 */ 615 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 616 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 617 618 /* 619 * Scan the internal namespace. 620 */ 621 acpi_rescan1(sc, NULL, NULL); 622 acpi_rescan_capabilities(sc); 623 624 (void)acpi_pcidev_scan(sc->sc_root); 625 626 #ifdef ACPIVERBOSE 627 acpi_print_devnodes(sc); 628 aprint_normal("\n"); 629 acpi_print_tree(sc->sc_root, 0); 630 #endif 631 } 632 633 static ACPI_STATUS 634 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 635 void *context, void **status) 636 { 637 struct acpi_walkcontext *awc = context; 638 struct acpi_softc *sc = awc->aw_sc; 639 struct acpi_devnode *ad; 640 ACPI_DEVICE_INFO *devinfo; 641 ACPI_OBJECT_TYPE type; 642 ACPI_NAME_UNION *anu; 643 ACPI_STATUS rv; 644 int clear, i; 645 646 rv = AcpiGetObjectInfo(handle, &devinfo); 647 648 if (ACPI_FAILURE(rv)) 649 return AE_OK; /* Do not terminate the walk. */ 650 651 type = devinfo->Type; 652 653 switch (type) { 654 655 case ACPI_TYPE_DEVICE: 656 657 #ifdef ACPI_ACTIVATE_DEV 658 acpi_activate_device(handle, &devinfo); 659 #endif 660 661 case ACPI_TYPE_PROCESSOR: 662 case ACPI_TYPE_THERMAL: 663 case ACPI_TYPE_POWER: 664 665 ad = malloc(sizeof(*ad), M_ACPI, M_NOWAIT | M_ZERO); 666 667 if (ad == NULL) 668 return AE_NO_MEMORY; 669 670 ad->ad_device = NULL; 671 ad->ad_notify = NULL; 672 ad->ad_pciinfo = NULL; 673 674 ad->ad_type = type; 675 ad->ad_handle = handle; 676 ad->ad_devinfo = devinfo; 677 678 ad->ad_root = sc->sc_dev; 679 ad->ad_parent = awc->aw_parent; 680 681 anu = (ACPI_NAME_UNION *)&devinfo->Name; 682 ad->ad_name[4] = '\0'; 683 684 for (i = 3, clear = 0; i >= 0; i--) { 685 686 if (clear == 0 && anu->Ascii[i] == '_') 687 ad->ad_name[i] = '\0'; 688 else { 689 ad->ad_name[i] = anu->Ascii[i]; 690 clear = 1; 691 } 692 } 693 694 if (ad->ad_name[0] == '\0') 695 ad->ad_name[0] = '_'; 696 697 SIMPLEQ_INIT(&ad->ad_child_head); 698 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 699 700 if (ad->ad_parent != NULL) { 701 702 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 703 ad, ad_child_list); 704 } 705 706 awc->aw_parent = ad; 707 } 708 709 return AE_OK; 710 } 711 712 static ACPI_STATUS 713 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 714 void *context, void **status) 715 { 716 struct acpi_walkcontext *awc = context; 717 718 KASSERT(awc != NULL); 719 KASSERT(awc->aw_parent != NULL); 720 721 if (handle == awc->aw_parent->ad_handle) 722 awc->aw_parent = awc->aw_parent->ad_parent; 723 724 return AE_OK; 725 } 726 727 #ifdef ACPI_ACTIVATE_DEV 728 729 #define ACPI_DEV_VALID (ACPI_VALID_STA | ACPI_VALID_HID) 730 #define ACPI_DEV_STATUS (ACPI_STA_DEV_PRESENT | ACPI_STA_DEV_ENABLED) 731 732 static void 733 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 734 { 735 ACPI_DEVICE_INFO *newdi; 736 ACPI_STATUS rv; 737 uint32_t old; 738 739 /* 740 * If the device is valid and present, 741 * but not enabled, try to activate it. 742 */ 743 if (((*di)->Valid & ACPI_DEV_VALID) != ACPI_DEV_VALID) 744 return; 745 746 old = (*di)->CurrentStatus; 747 748 if ((old & ACPI_DEV_STATUS) != ACPI_STA_DEV_PRESENT) 749 return; 750 751 rv = acpi_allocate_resources(handle); 752 753 if (ACPI_FAILURE(rv)) 754 goto fail; 755 756 rv = AcpiGetObjectInfo(handle, &newdi); 757 758 if (ACPI_FAILURE(rv)) 759 goto fail; 760 761 ACPI_FREE(*di); 762 *di = newdi; 763 764 aprint_verbose_dev(acpi_softc->sc_dev, 765 "%s activated, STA 0x%08X -> STA 0x%08X\n", 766 (*di)->HardwareId.String, old, (*di)->CurrentStatus); 767 768 return; 769 770 fail: 771 aprint_error_dev(acpi_softc->sc_dev, "failed to " 772 "activate %s\n", (*di)->HardwareId.String); 773 } 774 775 /* 776 * XXX: This very incomplete. 777 */ 778 ACPI_STATUS 779 acpi_allocate_resources(ACPI_HANDLE handle) 780 { 781 ACPI_BUFFER bufp, bufc, bufn; 782 ACPI_RESOURCE *resp, *resc, *resn; 783 ACPI_RESOURCE_IRQ *irq; 784 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 785 ACPI_STATUS rv; 786 uint delta; 787 788 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 789 if (ACPI_FAILURE(rv)) 790 goto out; 791 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 792 if (ACPI_FAILURE(rv)) { 793 goto out1; 794 } 795 796 bufn.Length = 1000; 797 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 798 resp = bufp.Pointer; 799 resc = bufc.Pointer; 800 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 801 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 802 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 803 resp = ACPI_NEXT_RESOURCE(resp); 804 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 805 break; 806 /* Found identical Id */ 807 resn->Type = resc->Type; 808 switch (resc->Type) { 809 case ACPI_RESOURCE_TYPE_IRQ: 810 memcpy(&resn->Data, &resp->Data, 811 sizeof(ACPI_RESOURCE_IRQ)); 812 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 813 irq->Interrupts[0] = 814 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 815 Interrupts[irq->InterruptCount-1]; 816 irq->InterruptCount = 1; 817 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 818 break; 819 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 820 memcpy(&resn->Data, &resp->Data, 821 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 822 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 823 #if 0 824 /* 825 * XXX: Not duplicating the interrupt logic above 826 * because its not clear what it accomplishes. 827 */ 828 xirq->Interrupts[0] = 829 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 830 Interrupts[irq->NumberOfInterrupts-1]; 831 xirq->NumberOfInterrupts = 1; 832 #endif 833 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 834 break; 835 case ACPI_RESOURCE_TYPE_IO: 836 memcpy(&resn->Data, &resp->Data, 837 sizeof(ACPI_RESOURCE_IO)); 838 resn->Length = resp->Length; 839 break; 840 default: 841 aprint_error_dev(acpi_softc->sc_dev, 842 "%s: invalid type %u\n", __func__, resc->Type); 843 rv = AE_BAD_DATA; 844 goto out2; 845 } 846 resc = ACPI_NEXT_RESOURCE(resc); 847 resn = ACPI_NEXT_RESOURCE(resn); 848 resp = ACPI_NEXT_RESOURCE(resp); 849 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 850 if (delta >= 851 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 852 bufn.Length *= 2; 853 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 854 M_ACPI, M_WAITOK); 855 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 856 delta); 857 } 858 } 859 860 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 861 aprint_error_dev(acpi_softc->sc_dev, 862 "%s: resc not exhausted\n", __func__); 863 rv = AE_BAD_DATA; 864 goto out3; 865 } 866 867 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 868 rv = AcpiSetCurrentResources(handle, &bufn); 869 870 if (ACPI_FAILURE(rv)) 871 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 872 "resources: %s\n", __func__, AcpiFormatException(rv)); 873 874 out3: 875 free(bufn.Pointer, M_ACPI); 876 out2: 877 ACPI_FREE(bufc.Pointer); 878 out1: 879 ACPI_FREE(bufp.Pointer); 880 out: 881 return rv; 882 } 883 884 #undef ACPI_DEV_VALID 885 #undef ACPI_DEV_STATUS 886 887 #endif /* ACPI_ACTIVATE_DEV */ 888 889 /* 890 * Device attachment. 891 */ 892 static int 893 acpi_rescan(device_t self, const char *ifattr, const int *locators) 894 { 895 struct acpi_softc *sc = device_private(self); 896 897 acpi_rescan1(sc, ifattr, locators); 898 899 return 0; 900 } 901 902 static void 903 acpi_rescan1(struct acpi_softc *sc, const char *ifattr, const int *locators) 904 { 905 906 if (ifattr_match(ifattr, "acpinodebus")) 907 acpi_rescan_nodes(sc); 908 909 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 910 sc->sc_apmbus = config_found_ia(sc->sc_dev, 911 "acpiapmbus", NULL, NULL); 912 } 913 914 static void 915 acpi_rescan_nodes(struct acpi_softc *sc) 916 { 917 struct acpi_attach_args aa; 918 struct acpi_devnode *ad; 919 920 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 921 922 if (ad->ad_device != NULL) 923 continue; 924 925 /* 926 * There is a bug in ACPICA: it defines the type 927 * of the scopes incorrectly for its own reasons. 928 */ 929 if (acpi_is_scope(ad) != false) 930 continue; 931 932 /* 933 * We only attach devices which are present, enabled, and 934 * functioning properly. However, if a device is enabled, 935 * it is decoding resources and we should claim these, 936 * if possible. This requires changes to bus_space(9). 937 */ 938 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) { 939 940 if ((ad->ad_devinfo->Valid & ACPI_VALID_STA) == 941 ACPI_VALID_STA && 942 (ad->ad_devinfo->CurrentStatus & 943 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED| 944 ACPI_STA_DEV_OK)) != 945 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED| 946 ACPI_STA_DEV_OK)) 947 continue; 948 } 949 950 /* 951 * The same problem as above. As for example 952 * thermal zones and power resources do not 953 * have a valid HID, only evaluate devices. 954 */ 955 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE && 956 (ad->ad_devinfo->Valid & ACPI_VALID_HID) == 0) 957 continue; 958 959 /* 960 * Handled internally. 961 */ 962 if (ad->ad_devinfo->Type == ACPI_TYPE_PROCESSOR) 963 continue; 964 965 /* 966 * Ditto, but bind power resources. 967 */ 968 if (ad->ad_devinfo->Type == ACPI_TYPE_POWER) { 969 acpi_power_res_add(ad); 970 continue; 971 } 972 973 /* 974 * Skip ignored HIDs. 975 */ 976 if (acpi_match_hid(ad->ad_devinfo, acpi_ignored_ids)) 977 continue; 978 979 aa.aa_node = ad; 980 aa.aa_iot = sc->sc_iot; 981 aa.aa_memt = sc->sc_memt; 982 aa.aa_pc = sc->sc_pc; 983 aa.aa_pciflags = sc->sc_pciflags; 984 aa.aa_ic = sc->sc_ic; 985 986 ad->ad_device = config_found_ia(sc->sc_dev, 987 "acpinodebus", &aa, acpi_print); 988 } 989 } 990 991 #define ACPI_STA_DEV_VALID \ 992 (ACPI_STA_DEV_PRESENT | ACPI_STA_DEV_ENABLED | ACPI_STA_DEV_OK) 993 994 static void 995 acpi_rescan_capabilities(struct acpi_softc *sc) 996 { 997 struct acpi_devnode *ad; 998 ACPI_DEVICE_INFO *di; 999 ACPI_HANDLE tmp; 1000 ACPI_STATUS rv; 1001 1002 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1003 1004 di = ad->ad_devinfo; 1005 1006 if (di->Type != ACPI_TYPE_DEVICE) 1007 continue; 1008 1009 if ((di->Valid & ACPI_VALID_STA) != 0 && 1010 (di->CurrentStatus & ACPI_STA_DEV_VALID) != 1011 ACPI_STA_DEV_VALID) 1012 continue; 1013 1014 /* 1015 * Scan power resource capabilities. 1016 * 1017 * If any power states are supported, 1018 * at least _PR0 and _PR3 must be present. 1019 */ 1020 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 1021 1022 if (ACPI_SUCCESS(rv)) { 1023 ad->ad_flags |= ACPI_DEVICE_POWER; 1024 acpi_power_add(ad); 1025 } 1026 1027 /* 1028 * Scan wake-up capabilities. 1029 */ 1030 rv = AcpiGetHandle(ad->ad_handle, "_PRW", &tmp); 1031 1032 if (ACPI_SUCCESS(rv)) { 1033 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 1034 acpi_wakedev_add(ad); 1035 } 1036 } 1037 } 1038 1039 #undef ACPI_STA_DEV_VALID 1040 1041 static int 1042 acpi_print(void *aux, const char *pnp) 1043 { 1044 struct acpi_attach_args *aa = aux; 1045 ACPI_STATUS rv; 1046 1047 if (pnp) { 1048 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1049 char *pnpstr = 1050 aa->aa_node->ad_devinfo->HardwareId.String; 1051 ACPI_BUFFER buf; 1052 1053 aprint_normal("%s (%s) ", aa->aa_node->ad_name, 1054 pnpstr); 1055 1056 rv = acpi_eval_struct(aa->aa_node->ad_handle, 1057 "_STR", &buf); 1058 if (ACPI_SUCCESS(rv)) { 1059 ACPI_OBJECT *obj = buf.Pointer; 1060 switch (obj->Type) { 1061 case ACPI_TYPE_STRING: 1062 aprint_normal("[%s] ", obj->String.Pointer); 1063 break; 1064 case ACPI_TYPE_BUFFER: 1065 aprint_normal("buffer %p ", obj->Buffer.Pointer); 1066 break; 1067 default: 1068 aprint_normal("type %u ",obj->Type); 1069 break; 1070 } 1071 ACPI_FREE(buf.Pointer); 1072 } 1073 #ifdef ACPIVERBOSE 1074 else { 1075 int i; 1076 1077 for (i = 0; i < __arraycount(acpi_knowndevs); 1078 i++) { 1079 if (strcmp(acpi_knowndevs[i].pnp, 1080 pnpstr) == 0) { 1081 aprint_normal("[%s] ", 1082 acpi_knowndevs[i].str); 1083 } 1084 } 1085 } 1086 1087 #endif 1088 aprint_normal("at %s", pnp); 1089 } else if (aa->aa_node->ad_devinfo->Type != ACPI_TYPE_DEVICE) { 1090 aprint_normal("%s (ACPI Object Type '%s' " 1091 "[0x%02x]) ", aa->aa_node->ad_name, 1092 AcpiUtGetTypeName(aa->aa_node->ad_devinfo->Type), 1093 aa->aa_node->ad_devinfo->Type); 1094 aprint_normal("at %s", pnp); 1095 } else 1096 return 0; 1097 } else { 1098 aprint_normal(" (%s", aa->aa_node->ad_name); 1099 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1100 aprint_normal(", %s", aa->aa_node->ad_devinfo->HardwareId.String); 1101 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_UID) { 1102 const char *uid; 1103 1104 uid = aa->aa_node->ad_devinfo->UniqueId.String; 1105 if (uid[0] == '\0') 1106 uid = "<null>"; 1107 aprint_normal("-%s", uid); 1108 } 1109 } 1110 aprint_normal(")"); 1111 } 1112 1113 return UNCONF; 1114 } 1115 1116 #ifdef ACPIVERBOSE 1117 static void 1118 acpi_print_devnodes(struct acpi_softc *sc) 1119 { 1120 struct acpi_devnode *ad; 1121 ACPI_DEVICE_INFO *di; 1122 1123 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1124 1125 di = ad->ad_devinfo; 1126 aprint_normal_dev(sc->sc_dev, "%-5s ", ad->ad_name); 1127 1128 aprint_normal("HID %-10s ", 1129 ((di->Valid & ACPI_VALID_HID) != 0) ? 1130 di->HardwareId.String: "-"); 1131 1132 aprint_normal("UID %-4s ", 1133 ((di->Valid & ACPI_VALID_UID) != 0) ? 1134 di->UniqueId.String : "-"); 1135 1136 if ((di->Valid & ACPI_VALID_STA) != 0) 1137 aprint_normal("STA 0x%08X ", di->CurrentStatus); 1138 else 1139 aprint_normal("STA %10s ", "-"); 1140 1141 if ((di->Valid & ACPI_VALID_ADR) != 0) 1142 aprint_normal("ADR 0x%016" PRIX64"", di->Address); 1143 else 1144 aprint_normal("ADR -"); 1145 1146 aprint_normal("\n"); 1147 } 1148 } 1149 1150 static void 1151 acpi_print_tree(struct acpi_devnode *ad, uint32_t level) 1152 { 1153 struct acpi_devnode *child; 1154 uint32_t i; 1155 1156 for (i = 0; i < level; i++) 1157 aprint_normal(" "); 1158 1159 aprint_normal("%-5s [%02u] [%c%c] ", ad->ad_name, ad->ad_type, 1160 ((ad->ad_flags & ACPI_DEVICE_POWER) != 0) ? 'P' : ' ', 1161 ((ad->ad_flags & ACPI_DEVICE_WAKEUP) != 0) ? 'W' : ' '); 1162 1163 if (ad->ad_pciinfo != NULL) { 1164 1165 aprint_normal("(PCI) @ 0x%02X:0x%02X:0x%02X:0x%02X ", 1166 ad->ad_pciinfo->ap_segment, ad->ad_pciinfo->ap_bus, 1167 ad->ad_pciinfo->ap_device, ad->ad_pciinfo->ap_function); 1168 1169 if ((ad->ad_devinfo->Flags & ACPI_PCI_ROOT_BRIDGE) != 0) 1170 aprint_normal("[R] "); 1171 1172 if (ad->ad_pciinfo->ap_bridge != false) 1173 aprint_normal("[B] -> 0x%02X", 1174 ad->ad_pciinfo->ap_downbus); 1175 } 1176 1177 aprint_normal("\n\n"); 1178 1179 SIMPLEQ_FOREACH(child, &ad->ad_child_head, ad_child_list) 1180 acpi_print_tree(child, level + 1); 1181 } 1182 #endif 1183 1184 /* 1185 * Notify. 1186 */ 1187 static void 1188 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1189 { 1190 struct acpi_softc *sc = acpi_softc; 1191 struct acpi_devnode *ad; 1192 1193 KASSERT(sc != NULL); 1194 KASSERT(aux == NULL); 1195 KASSERT(acpi_active != 0); 1196 1197 if (acpi_suspended != 0) 1198 return; 1199 1200 /* 1201 * System: 0x00 - 0x7F. 1202 * Device: 0x80 - 0xFF. 1203 */ 1204 switch (event) { 1205 1206 case ACPI_NOTIFY_BUS_CHECK: 1207 case ACPI_NOTIFY_DEVICE_CHECK: 1208 case ACPI_NOTIFY_DEVICE_WAKE: 1209 case ACPI_NOTIFY_EJECT_REQUEST: 1210 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1211 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1212 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1213 case ACPI_NOTIFY_POWER_FAULT: 1214 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1215 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1216 case ACPI_NOTIFY_RESERVED: 1217 case ACPI_NOTIFY_LOCALITY_UPDATE: 1218 break; 1219 } 1220 1221 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1222 "%s (%p)\n", event, acpi_name(handle), handle)); 1223 1224 /* 1225 * We deliver notifications only to drivers 1226 * that have been succesfully attached and 1227 * that have registered a handler with us. 1228 * The opaque pointer is always the device_t. 1229 */ 1230 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1231 1232 if (ad->ad_device == NULL) 1233 continue; 1234 1235 if (ad->ad_notify == NULL) 1236 continue; 1237 1238 if (ad->ad_handle != handle) 1239 continue; 1240 1241 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1242 1243 return; 1244 } 1245 1246 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1247 "for %s (%p)\n", event, acpi_name(handle), handle); 1248 } 1249 1250 bool 1251 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1252 { 1253 struct acpi_softc *sc = acpi_softc; 1254 1255 KASSERT(sc != NULL); 1256 KASSERT(acpi_active != 0); 1257 1258 if (acpi_suspended != 0) 1259 goto fail; 1260 1261 if (ad == NULL || notify == NULL) 1262 goto fail; 1263 1264 ad->ad_notify = notify; 1265 1266 return true; 1267 1268 fail: 1269 aprint_error_dev(sc->sc_dev, "failed to register notify " 1270 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1271 1272 return false; 1273 } 1274 1275 void 1276 acpi_deregister_notify(struct acpi_devnode *ad) 1277 { 1278 1279 ad->ad_notify = NULL; 1280 } 1281 1282 /* 1283 * Fixed buttons. 1284 */ 1285 static void 1286 acpi_register_fixed_button(struct acpi_softc *sc, int event) 1287 { 1288 struct sysmon_pswitch *smpsw; 1289 ACPI_STATUS rv; 1290 int type; 1291 1292 switch (event) { 1293 1294 case ACPI_EVENT_POWER_BUTTON: 1295 1296 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1297 return; 1298 1299 type = PSWITCH_TYPE_POWER; 1300 smpsw = &sc->sc_smpsw_power; 1301 break; 1302 1303 case ACPI_EVENT_SLEEP_BUTTON: 1304 1305 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1306 return; 1307 1308 type = PSWITCH_TYPE_SLEEP; 1309 smpsw = &sc->sc_smpsw_sleep; 1310 break; 1311 1312 default: 1313 rv = AE_TYPE; 1314 goto fail; 1315 } 1316 1317 smpsw->smpsw_type = type; 1318 smpsw->smpsw_name = device_xname(sc->sc_dev); 1319 1320 if (sysmon_pswitch_register(smpsw) != 0) { 1321 rv = AE_ERROR; 1322 goto fail; 1323 } 1324 1325 rv = AcpiInstallFixedEventHandler(event, 1326 acpi_fixed_button_handler, smpsw); 1327 1328 if (ACPI_FAILURE(rv)) 1329 goto fail; 1330 1331 aprint_debug_dev(sc->sc_dev, "fixed %s button present\n", 1332 (type != ACPI_EVENT_SLEEP_BUTTON) ? "power" : "sleep"); 1333 1334 return; 1335 1336 fail: 1337 aprint_error_dev(sc->sc_dev, "failed to register " 1338 "fixed event: %s\n", AcpiFormatException(rv)); 1339 } 1340 1341 static void 1342 acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1343 { 1344 struct sysmon_pswitch *smpsw; 1345 ACPI_STATUS rv; 1346 1347 switch (event) { 1348 1349 case ACPI_EVENT_POWER_BUTTON: 1350 smpsw = &sc->sc_smpsw_power; 1351 1352 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1353 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1354 return; 1355 } 1356 1357 break; 1358 1359 case ACPI_EVENT_SLEEP_BUTTON: 1360 smpsw = &sc->sc_smpsw_sleep; 1361 1362 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1363 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1364 return; 1365 } 1366 1367 break; 1368 1369 default: 1370 rv = AE_TYPE; 1371 goto fail; 1372 } 1373 1374 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1375 1376 if (ACPI_SUCCESS(rv)) { 1377 sysmon_pswitch_unregister(smpsw); 1378 return; 1379 } 1380 1381 fail: 1382 aprint_error_dev(sc->sc_dev, "failed to deregister " 1383 "fixed event: %s\n", AcpiFormatException(rv)); 1384 } 1385 1386 static uint32_t 1387 acpi_fixed_button_handler(void *context) 1388 { 1389 static const int handler = OSL_NOTIFY_HANDLER; 1390 struct sysmon_pswitch *smpsw = context; 1391 1392 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "fixed event\n")); 1393 1394 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1395 1396 return ACPI_INTERRUPT_HANDLED; 1397 } 1398 1399 static void 1400 acpi_fixed_button_pressed(void *context) 1401 { 1402 struct sysmon_pswitch *smpsw = context; 1403 1404 ACPI_DEBUG_PRINT((ACPI_DB_INFO, 1405 "%s fixed button pressed\n", smpsw->smpsw_name)); 1406 1407 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1408 } 1409 1410 /* 1411 * Sleep. 1412 */ 1413 static void 1414 acpi_sleep_init(struct acpi_softc *sc) 1415 { 1416 uint8_t a, b, i; 1417 ACPI_STATUS rv; 1418 1419 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1420 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1421 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1422 1423 /* 1424 * Evaluate supported sleep states. 1425 */ 1426 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1427 1428 rv = AcpiGetSleepTypeData(i, &a, &b); 1429 1430 if (ACPI_SUCCESS(rv)) 1431 sc->sc_sleepstates |= __BIT(i); 1432 } 1433 } 1434 1435 ACPI_STATUS 1436 acpi_enter_sleep_state(struct acpi_softc *sc, int state) 1437 { 1438 ACPI_STATUS rv = AE_OK; 1439 int err; 1440 1441 if (state == sc->sc_sleepstate) 1442 return AE_OK; 1443 1444 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1445 1446 switch (state) { 1447 1448 case ACPI_STATE_S0: 1449 break; 1450 1451 case ACPI_STATE_S1: 1452 case ACPI_STATE_S2: 1453 case ACPI_STATE_S3: 1454 case ACPI_STATE_S4: 1455 1456 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1457 aprint_error_dev(sc->sc_dev, "sleep state " 1458 "S%d is not available\n", state); 1459 return AE_OK; 1460 } 1461 1462 /* 1463 * Evaluate the _TTS method. This should be done before 1464 * pmf_system_suspend(9) and the evaluation of _PTS. 1465 * We should also re-evaluate this once we return to 1466 * S0 or if we abort the sleep state transition in the 1467 * middle (see ACPI 3.0, section 7.3.6). In reality, 1468 * however, the _TTS method is seldom seen in the field. 1469 */ 1470 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1471 1472 if (ACPI_SUCCESS(rv)) 1473 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1474 1475 rv = AE_OK; 1476 1477 acpi_wakedev_commit(sc, state); 1478 1479 if (state != ACPI_STATE_S1 && 1480 pmf_system_suspend(PMF_Q_NONE) != true) { 1481 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1482 break; 1483 } 1484 1485 /* 1486 * This will evaluate the _PTS and _SST methods, 1487 * but unlike the documentation claims, not _GTS, 1488 * which is evaluated in AcpiEnterSleepState(). 1489 * 1490 * This must be called with interrupts enabled. 1491 */ 1492 rv = AcpiEnterSleepStatePrep(state); 1493 1494 if (ACPI_FAILURE(rv)) { 1495 aprint_error_dev(sc->sc_dev, "failed to prepare " 1496 "S%d: %s\n", state, AcpiFormatException(rv)); 1497 break; 1498 } 1499 1500 sc->sc_sleepstate = state; 1501 1502 if (state == ACPI_STATE_S1) { 1503 1504 /* Just enter the state. */ 1505 acpi_md_OsDisableInterrupt(); 1506 rv = AcpiEnterSleepState(state); 1507 1508 if (ACPI_FAILURE(rv)) 1509 aprint_error_dev(sc->sc_dev, "failed to " 1510 "enter S1: %s\n", AcpiFormatException(rv)); 1511 1512 (void)AcpiLeaveSleepState(state); 1513 1514 } else { 1515 1516 err = acpi_md_sleep(state); 1517 1518 if (state == ACPI_STATE_S4) 1519 AcpiEnable(); 1520 1521 pmf_system_bus_resume(PMF_Q_NONE); 1522 (void)AcpiLeaveSleepState(state); 1523 pmf_system_resume(PMF_Q_NONE); 1524 } 1525 1526 break; 1527 1528 case ACPI_STATE_S5: 1529 1530 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1531 1532 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1533 1534 if (ACPI_FAILURE(rv)) { 1535 aprint_error_dev(sc->sc_dev, "failed to prepare " 1536 "S%d: %s\n", state, AcpiFormatException(rv)); 1537 break; 1538 } 1539 1540 DELAY(1000000); 1541 1542 sc->sc_sleepstate = state; 1543 acpi_md_OsDisableInterrupt(); 1544 1545 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1546 1547 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1548 1549 break; 1550 } 1551 1552 sc->sc_sleepstate = ACPI_STATE_S0; 1553 1554 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1555 1556 return rv; 1557 } 1558 1559 /* 1560 * Sysctl. 1561 */ 1562 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1563 { 1564 const struct sysctlnode *mnode, *rnode; 1565 int err; 1566 1567 err = sysctl_createv(clog, 0, NULL, &rnode, 1568 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", 1569 NULL, NULL, 0, NULL, 0, 1570 CTL_HW, CTL_EOL); 1571 1572 if (err != 0) 1573 return; 1574 1575 err = sysctl_createv(clog, 0, &rnode, &rnode, 1576 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1577 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1578 NULL, 0, NULL, 0, 1579 CTL_CREATE, CTL_EOL); 1580 1581 if (err != 0) 1582 return; 1583 1584 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1585 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1586 "root", SYSCTL_DESCR("ACPI root pointer"), 1587 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1588 CTL_CREATE, CTL_EOL); 1589 1590 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1591 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1592 "supported_states", SYSCTL_DESCR("Supported system states"), 1593 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1594 CTL_CREATE, CTL_EOL); 1595 1596 err = sysctl_createv(NULL, 0, NULL, &mnode, 1597 CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep", 1598 NULL, NULL, 0, NULL, 0, 1599 CTL_MACHDEP, CTL_EOL); 1600 1601 if (err == 0) { 1602 1603 (void)sysctl_createv(NULL, 0, &mnode, NULL, 1604 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1605 "sleep_state", SYSCTL_DESCR("System sleep state"), 1606 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1607 CTL_CREATE, CTL_EOL); 1608 } 1609 1610 err = sysctl_createv(clog, 0, &rnode, &rnode, 1611 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1612 "stat", SYSCTL_DESCR("ACPI statistics"), 1613 NULL, 0, NULL, 0, 1614 CTL_CREATE, CTL_EOL); 1615 1616 if (err != 0) 1617 return; 1618 1619 (void)sysctl_createv(clog, 0, &rnode, NULL, 1620 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1621 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1622 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1623 CTL_CREATE, CTL_EOL); 1624 1625 (void)sysctl_createv(clog, 0, &rnode, NULL, 1626 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1627 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1628 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1629 CTL_CREATE, CTL_EOL); 1630 1631 (void)sysctl_createv(clog, 0, &rnode, NULL, 1632 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1633 "fixed", SYSCTL_DESCR("Number of fixed events"), 1634 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1635 CTL_CREATE, CTL_EOL); 1636 1637 (void)sysctl_createv(clog, 0, &rnode, NULL, 1638 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1639 "method", SYSCTL_DESCR("Number of methods executed"), 1640 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1641 CTL_CREATE, CTL_EOL); 1642 1643 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1644 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1645 } 1646 1647 static int 1648 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1649 { 1650 struct sysctlnode node; 1651 uint64_t t; 1652 int err, i; 1653 1654 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1655 t += AcpiFixedEventCount[i]; 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 static int 1669 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1670 { 1671 struct acpi_softc *sc = acpi_softc; 1672 struct sysctlnode node; 1673 int err, t; 1674 1675 if (acpi_softc == NULL) 1676 return ENOSYS; 1677 1678 node = *rnode; 1679 t = sc->sc_sleepstate; 1680 node.sysctl_data = &t; 1681 1682 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1683 1684 if (err || newp == NULL) 1685 return err; 1686 1687 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1688 return EINVAL; 1689 1690 acpi_enter_sleep_state(sc, t); 1691 1692 return 0; 1693 } 1694 1695 static int 1696 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1697 { 1698 struct acpi_softc *sc = acpi_softc; 1699 struct sysctlnode node; 1700 char t[3 * 6 + 1]; 1701 int err; 1702 1703 if (acpi_softc == NULL) 1704 return ENOSYS; 1705 1706 (void)memset(t, '\0', sizeof(t)); 1707 1708 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1709 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1710 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1711 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1712 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1713 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1714 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1715 1716 node = *rnode; 1717 node.sysctl_data = &t; 1718 1719 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1720 1721 if (err || newp == NULL) 1722 return err; 1723 1724 return 0; 1725 } 1726 1727 /* 1728 * Miscellaneous. 1729 */ 1730 static bool 1731 acpi_is_scope(struct acpi_devnode *ad) 1732 { 1733 int i; 1734 1735 /* 1736 * Return true if the node is a root scope. 1737 */ 1738 if (ad->ad_parent == NULL) 1739 return false; 1740 1741 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1742 return false; 1743 1744 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1745 1746 if (acpi_scopes[i] == NULL) 1747 continue; 1748 1749 if (ad->ad_handle == acpi_scopes[i]) 1750 return true; 1751 } 1752 1753 return false; 1754 } 1755 1756 ACPI_PHYSICAL_ADDRESS 1757 acpi_OsGetRootPointer(void) 1758 { 1759 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1760 1761 /* 1762 * We let MD code handle this since there are multiple ways to do it: 1763 * 1764 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1765 * 1766 * IA-64: Use the EFI. 1767 */ 1768 PhysicalAddress = acpi_md_OsGetRootPointer(); 1769 1770 if (acpi_root_pointer == 0) 1771 acpi_root_pointer = PhysicalAddress; 1772 1773 return PhysicalAddress; 1774 } 1775 1776 static ACPI_TABLE_HEADER * 1777 acpi_map_rsdt(void) 1778 { 1779 ACPI_PHYSICAL_ADDRESS paddr; 1780 ACPI_TABLE_RSDP *rsdp; 1781 1782 paddr = AcpiOsGetRootPointer(); 1783 1784 if (paddr == 0) 1785 return NULL; 1786 1787 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1788 1789 if (rsdp == NULL) 1790 return NULL; 1791 1792 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1793 paddr = rsdp->XsdtPhysicalAddress; 1794 else 1795 paddr = rsdp->RsdtPhysicalAddress; 1796 1797 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1798 1799 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1800 } 1801 1802 static void 1803 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1804 { 1805 1806 if (rsdt == NULL) 1807 return; 1808 1809 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1810 } 1811
Indexes created Tue Sep 23 22:09:46 GMT 2025