acpi.c revision 1.195
1 /* $NetBSD: acpi.c,v 1.195 2010/05/12 16:11:05 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 1.195 2010/05/12 16:11:05 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 static void 729 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 730 { 731 static const int valid = ACPI_VALID_STA | ACPI_VALID_HID; 732 ACPI_DEVICE_INFO *newdi; 733 ACPI_STATUS rv; 734 uint32_t old; 735 736 /* 737 * If the device is valid and present, 738 * but not enabled, try to activate it. 739 */ 740 if (((*di)->Valid & valid) != valid) 741 return; 742 743 old = (*di)->CurrentStatus; 744 745 if ((old & (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED)) != 746 ACPI_STA_DEVICE_PRESENT) 747 return; 748 749 rv = acpi_allocate_resources(handle); 750 751 if (ACPI_FAILURE(rv)) 752 goto fail; 753 754 rv = AcpiGetObjectInfo(handle, &newdi); 755 756 if (ACPI_FAILURE(rv)) 757 goto fail; 758 759 ACPI_FREE(*di); 760 *di = newdi; 761 762 aprint_verbose_dev(acpi_softc->sc_dev, 763 "%s activated, STA 0x%08X -> STA 0x%08X\n", 764 (*di)->HardwareId.String, old, (*di)->CurrentStatus); 765 766 return; 767 768 fail: 769 aprint_error_dev(acpi_softc->sc_dev, "failed to " 770 "activate %s\n", (*di)->HardwareId.String); 771 } 772 773 /* 774 * XXX: This very incomplete. 775 */ 776 ACPI_STATUS 777 acpi_allocate_resources(ACPI_HANDLE handle) 778 { 779 ACPI_BUFFER bufp, bufc, bufn; 780 ACPI_RESOURCE *resp, *resc, *resn; 781 ACPI_RESOURCE_IRQ *irq; 782 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 783 ACPI_STATUS rv; 784 uint delta; 785 786 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 787 if (ACPI_FAILURE(rv)) 788 goto out; 789 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 790 if (ACPI_FAILURE(rv)) { 791 goto out1; 792 } 793 794 bufn.Length = 1000; 795 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 796 resp = bufp.Pointer; 797 resc = bufc.Pointer; 798 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 799 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 800 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 801 resp = ACPI_NEXT_RESOURCE(resp); 802 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 803 break; 804 /* Found identical Id */ 805 resn->Type = resc->Type; 806 switch (resc->Type) { 807 case ACPI_RESOURCE_TYPE_IRQ: 808 memcpy(&resn->Data, &resp->Data, 809 sizeof(ACPI_RESOURCE_IRQ)); 810 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 811 irq->Interrupts[0] = 812 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 813 Interrupts[irq->InterruptCount-1]; 814 irq->InterruptCount = 1; 815 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 816 break; 817 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 818 memcpy(&resn->Data, &resp->Data, 819 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 820 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 821 #if 0 822 /* 823 * XXX: Not duplicating the interrupt logic above 824 * because its not clear what it accomplishes. 825 */ 826 xirq->Interrupts[0] = 827 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 828 Interrupts[irq->NumberOfInterrupts-1]; 829 xirq->NumberOfInterrupts = 1; 830 #endif 831 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 832 break; 833 case ACPI_RESOURCE_TYPE_IO: 834 memcpy(&resn->Data, &resp->Data, 835 sizeof(ACPI_RESOURCE_IO)); 836 resn->Length = resp->Length; 837 break; 838 default: 839 aprint_error_dev(acpi_softc->sc_dev, 840 "%s: invalid type %u\n", __func__, resc->Type); 841 rv = AE_BAD_DATA; 842 goto out2; 843 } 844 resc = ACPI_NEXT_RESOURCE(resc); 845 resn = ACPI_NEXT_RESOURCE(resn); 846 resp = ACPI_NEXT_RESOURCE(resp); 847 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 848 if (delta >= 849 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 850 bufn.Length *= 2; 851 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 852 M_ACPI, M_WAITOK); 853 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 854 delta); 855 } 856 } 857 858 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 859 aprint_error_dev(acpi_softc->sc_dev, 860 "%s: resc not exhausted\n", __func__); 861 rv = AE_BAD_DATA; 862 goto out3; 863 } 864 865 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 866 rv = AcpiSetCurrentResources(handle, &bufn); 867 868 if (ACPI_FAILURE(rv)) 869 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 870 "resources: %s\n", __func__, AcpiFormatException(rv)); 871 872 out3: 873 free(bufn.Pointer, M_ACPI); 874 out2: 875 ACPI_FREE(bufc.Pointer); 876 out1: 877 ACPI_FREE(bufp.Pointer); 878 out: 879 return rv; 880 } 881 #endif /* ACPI_ACTIVATE_DEV */ 882 883 /* 884 * Device attachment. 885 */ 886 static int 887 acpi_rescan(device_t self, const char *ifattr, const int *locators) 888 { 889 struct acpi_softc *sc = device_private(self); 890 891 acpi_rescan1(sc, ifattr, locators); 892 893 return 0; 894 } 895 896 static void 897 acpi_rescan1(struct acpi_softc *sc, const char *ifattr, const int *locators) 898 { 899 900 if (ifattr_match(ifattr, "acpinodebus")) 901 acpi_rescan_nodes(sc); 902 903 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 904 sc->sc_apmbus = config_found_ia(sc->sc_dev, 905 "acpiapmbus", NULL, NULL); 906 } 907 908 static void 909 acpi_rescan_nodes(struct acpi_softc *sc) 910 { 911 struct acpi_attach_args aa; 912 struct acpi_devnode *ad; 913 ACPI_DEVICE_INFO *di; 914 915 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 916 917 if (ad->ad_device != NULL) 918 continue; 919 920 /* 921 * There is a bug in ACPICA: it defines the type 922 * of the scopes incorrectly for its own reasons. 923 */ 924 if (acpi_is_scope(ad) != false) 925 continue; 926 927 di = ad->ad_devinfo; 928 929 /* 930 * We only attach devices which are present, enabled, and 931 * functioning properly. However, if a device is enabled, 932 * it is decoding resources and we should claim these, 933 * if possible. This requires changes to bus_space(9). 934 */ 935 if (di->Type == ACPI_TYPE_DEVICE) { 936 937 if ((di->Valid & ACPI_VALID_STA) != 0 && 938 (di->CurrentStatus & ACPI_STA_OK) != ACPI_STA_OK) 939 continue; 940 } 941 942 /* 943 * The same problem as above. As for example 944 * thermal zones and power resources do not 945 * have a valid HID, only evaluate devices. 946 */ 947 if (di->Type == ACPI_TYPE_DEVICE && 948 (di->Valid & ACPI_VALID_HID) == 0) 949 continue; 950 951 /* 952 * Handled internally. 953 */ 954 if (di->Type == ACPI_TYPE_PROCESSOR) 955 continue; 956 957 /* 958 * Ditto, but bind power resources. 959 */ 960 if (di->Type == ACPI_TYPE_POWER) { 961 acpi_power_res_add(ad); 962 continue; 963 } 964 965 /* 966 * Skip ignored HIDs. 967 */ 968 if (acpi_match_hid(di, acpi_ignored_ids)) 969 continue; 970 971 aa.aa_node = ad; 972 aa.aa_iot = sc->sc_iot; 973 aa.aa_memt = sc->sc_memt; 974 aa.aa_pc = sc->sc_pc; 975 aa.aa_pciflags = sc->sc_pciflags; 976 aa.aa_ic = sc->sc_ic; 977 978 ad->ad_device = config_found_ia(sc->sc_dev, 979 "acpinodebus", &aa, acpi_print); 980 } 981 } 982 983 static void 984 acpi_rescan_capabilities(struct acpi_softc *sc) 985 { 986 struct acpi_devnode *ad; 987 ACPI_HANDLE tmp; 988 ACPI_STATUS rv; 989 990 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 991 992 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 993 continue; 994 995 /* 996 * Scan power resource capabilities. 997 * 998 * If any power states are supported, 999 * at least _PR0 and _PR3 must be present. 1000 */ 1001 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 1002 1003 if (ACPI_SUCCESS(rv)) { 1004 ad->ad_flags |= ACPI_DEVICE_POWER; 1005 acpi_power_add(ad); 1006 } 1007 1008 /* 1009 * Scan wake-up capabilities. 1010 */ 1011 rv = AcpiGetHandle(ad->ad_handle, "_PRW", &tmp); 1012 1013 if (ACPI_SUCCESS(rv)) { 1014 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 1015 acpi_wakedev_add(ad); 1016 } 1017 } 1018 } 1019 1020 static int 1021 acpi_print(void *aux, const char *pnp) 1022 { 1023 struct acpi_attach_args *aa = aux; 1024 ACPI_STATUS rv; 1025 1026 if (pnp) { 1027 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1028 char *pnpstr = 1029 aa->aa_node->ad_devinfo->HardwareId.String; 1030 ACPI_BUFFER buf; 1031 1032 aprint_normal("%s (%s) ", aa->aa_node->ad_name, 1033 pnpstr); 1034 1035 rv = acpi_eval_struct(aa->aa_node->ad_handle, 1036 "_STR", &buf); 1037 if (ACPI_SUCCESS(rv)) { 1038 ACPI_OBJECT *obj = buf.Pointer; 1039 switch (obj->Type) { 1040 case ACPI_TYPE_STRING: 1041 aprint_normal("[%s] ", obj->String.Pointer); 1042 break; 1043 case ACPI_TYPE_BUFFER: 1044 aprint_normal("buffer %p ", obj->Buffer.Pointer); 1045 break; 1046 default: 1047 aprint_normal("type %u ",obj->Type); 1048 break; 1049 } 1050 ACPI_FREE(buf.Pointer); 1051 } 1052 #ifdef ACPIVERBOSE 1053 else { 1054 int i; 1055 1056 for (i = 0; i < __arraycount(acpi_knowndevs); 1057 i++) { 1058 if (strcmp(acpi_knowndevs[i].pnp, 1059 pnpstr) == 0) { 1060 aprint_normal("[%s] ", 1061 acpi_knowndevs[i].str); 1062 } 1063 } 1064 } 1065 1066 #endif 1067 aprint_normal("at %s", pnp); 1068 } else if (aa->aa_node->ad_devinfo->Type != ACPI_TYPE_DEVICE) { 1069 aprint_normal("%s (ACPI Object Type '%s' " 1070 "[0x%02x]) ", aa->aa_node->ad_name, 1071 AcpiUtGetTypeName(aa->aa_node->ad_devinfo->Type), 1072 aa->aa_node->ad_devinfo->Type); 1073 aprint_normal("at %s", pnp); 1074 } else 1075 return 0; 1076 } else { 1077 aprint_normal(" (%s", aa->aa_node->ad_name); 1078 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1079 aprint_normal(", %s", aa->aa_node->ad_devinfo->HardwareId.String); 1080 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_UID) { 1081 const char *uid; 1082 1083 uid = aa->aa_node->ad_devinfo->UniqueId.String; 1084 if (uid[0] == '\0') 1085 uid = "<null>"; 1086 aprint_normal("-%s", uid); 1087 } 1088 } 1089 aprint_normal(")"); 1090 } 1091 1092 return UNCONF; 1093 } 1094 1095 #ifdef ACPIVERBOSE 1096 static void 1097 acpi_print_devnodes(struct acpi_softc *sc) 1098 { 1099 struct acpi_devnode *ad; 1100 ACPI_DEVICE_INFO *di; 1101 1102 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1103 1104 di = ad->ad_devinfo; 1105 aprint_normal_dev(sc->sc_dev, "%-5s ", ad->ad_name); 1106 1107 aprint_normal("HID %-10s ", 1108 ((di->Valid & ACPI_VALID_HID) != 0) ? 1109 di->HardwareId.String: "-"); 1110 1111 aprint_normal("UID %-4s ", 1112 ((di->Valid & ACPI_VALID_UID) != 0) ? 1113 di->UniqueId.String : "-"); 1114 1115 if ((di->Valid & ACPI_VALID_STA) != 0) 1116 aprint_normal("STA 0x%08X ", di->CurrentStatus); 1117 else 1118 aprint_normal("STA %10s ", "-"); 1119 1120 if ((di->Valid & ACPI_VALID_ADR) != 0) 1121 aprint_normal("ADR 0x%016" PRIX64"", di->Address); 1122 else 1123 aprint_normal("ADR -"); 1124 1125 aprint_normal("\n"); 1126 } 1127 } 1128 1129 static void 1130 acpi_print_tree(struct acpi_devnode *ad, uint32_t level) 1131 { 1132 struct acpi_devnode *child; 1133 uint32_t i; 1134 1135 for (i = 0; i < level; i++) 1136 aprint_normal(" "); 1137 1138 aprint_normal("%-5s [%02u] [%c%c] ", ad->ad_name, ad->ad_type, 1139 ((ad->ad_flags & ACPI_DEVICE_POWER) != 0) ? 'P' : ' ', 1140 ((ad->ad_flags & ACPI_DEVICE_WAKEUP) != 0) ? 'W' : ' '); 1141 1142 if (ad->ad_pciinfo != NULL) { 1143 1144 aprint_normal("(PCI) @ 0x%02X:0x%02X:0x%02X:0x%02X ", 1145 ad->ad_pciinfo->ap_segment, ad->ad_pciinfo->ap_bus, 1146 ad->ad_pciinfo->ap_device, ad->ad_pciinfo->ap_function); 1147 1148 if ((ad->ad_devinfo->Flags & ACPI_PCI_ROOT_BRIDGE) != 0) 1149 aprint_normal("[R] "); 1150 1151 if (ad->ad_pciinfo->ap_bridge != false) 1152 aprint_normal("[B] -> 0x%02X", 1153 ad->ad_pciinfo->ap_downbus); 1154 } 1155 1156 aprint_normal("\n\n"); 1157 1158 SIMPLEQ_FOREACH(child, &ad->ad_child_head, ad_child_list) 1159 acpi_print_tree(child, level + 1); 1160 } 1161 #endif 1162 1163 /* 1164 * Notify. 1165 */ 1166 static void 1167 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1168 { 1169 struct acpi_softc *sc = acpi_softc; 1170 struct acpi_devnode *ad; 1171 1172 KASSERT(sc != NULL); 1173 KASSERT(aux == NULL); 1174 KASSERT(acpi_active != 0); 1175 1176 if (acpi_suspended != 0) 1177 return; 1178 1179 /* 1180 * System: 0x00 - 0x7F. 1181 * Device: 0x80 - 0xFF. 1182 */ 1183 switch (event) { 1184 1185 case ACPI_NOTIFY_BUS_CHECK: 1186 case ACPI_NOTIFY_DEVICE_CHECK: 1187 case ACPI_NOTIFY_DEVICE_WAKE: 1188 case ACPI_NOTIFY_EJECT_REQUEST: 1189 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1190 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1191 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1192 case ACPI_NOTIFY_POWER_FAULT: 1193 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1194 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1195 case ACPI_NOTIFY_RESERVED: 1196 case ACPI_NOTIFY_LOCALITY_UPDATE: 1197 break; 1198 } 1199 1200 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1201 "%s (%p)\n", event, acpi_name(handle), handle)); 1202 1203 /* 1204 * We deliver notifications only to drivers 1205 * that have been succesfully attached and 1206 * that have registered a handler with us. 1207 * The opaque pointer is always the device_t. 1208 */ 1209 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1210 1211 if (ad->ad_device == NULL) 1212 continue; 1213 1214 if (ad->ad_notify == NULL) 1215 continue; 1216 1217 if (ad->ad_handle != handle) 1218 continue; 1219 1220 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1221 1222 return; 1223 } 1224 1225 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1226 "for %s (%p)\n", event, acpi_name(handle), handle); 1227 } 1228 1229 bool 1230 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1231 { 1232 struct acpi_softc *sc = acpi_softc; 1233 1234 KASSERT(sc != NULL); 1235 KASSERT(acpi_active != 0); 1236 1237 if (acpi_suspended != 0) 1238 goto fail; 1239 1240 if (ad == NULL || notify == NULL) 1241 goto fail; 1242 1243 ad->ad_notify = notify; 1244 1245 return true; 1246 1247 fail: 1248 aprint_error_dev(sc->sc_dev, "failed to register notify " 1249 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1250 1251 return false; 1252 } 1253 1254 void 1255 acpi_deregister_notify(struct acpi_devnode *ad) 1256 { 1257 1258 ad->ad_notify = NULL; 1259 } 1260 1261 /* 1262 * Fixed buttons. 1263 */ 1264 static void 1265 acpi_register_fixed_button(struct acpi_softc *sc, int event) 1266 { 1267 struct sysmon_pswitch *smpsw; 1268 ACPI_STATUS rv; 1269 int type; 1270 1271 switch (event) { 1272 1273 case ACPI_EVENT_POWER_BUTTON: 1274 1275 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1276 return; 1277 1278 type = PSWITCH_TYPE_POWER; 1279 smpsw = &sc->sc_smpsw_power; 1280 break; 1281 1282 case ACPI_EVENT_SLEEP_BUTTON: 1283 1284 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1285 return; 1286 1287 type = PSWITCH_TYPE_SLEEP; 1288 smpsw = &sc->sc_smpsw_sleep; 1289 break; 1290 1291 default: 1292 rv = AE_TYPE; 1293 goto fail; 1294 } 1295 1296 smpsw->smpsw_type = type; 1297 smpsw->smpsw_name = device_xname(sc->sc_dev); 1298 1299 if (sysmon_pswitch_register(smpsw) != 0) { 1300 rv = AE_ERROR; 1301 goto fail; 1302 } 1303 1304 rv = AcpiInstallFixedEventHandler(event, 1305 acpi_fixed_button_handler, smpsw); 1306 1307 if (ACPI_FAILURE(rv)) 1308 goto fail; 1309 1310 aprint_debug_dev(sc->sc_dev, "fixed %s button present\n", 1311 (type != ACPI_EVENT_SLEEP_BUTTON) ? "power" : "sleep"); 1312 1313 return; 1314 1315 fail: 1316 aprint_error_dev(sc->sc_dev, "failed to register " 1317 "fixed event: %s\n", AcpiFormatException(rv)); 1318 } 1319 1320 static void 1321 acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1322 { 1323 struct sysmon_pswitch *smpsw; 1324 ACPI_STATUS rv; 1325 1326 switch (event) { 1327 1328 case ACPI_EVENT_POWER_BUTTON: 1329 smpsw = &sc->sc_smpsw_power; 1330 1331 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1332 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1333 return; 1334 } 1335 1336 break; 1337 1338 case ACPI_EVENT_SLEEP_BUTTON: 1339 smpsw = &sc->sc_smpsw_sleep; 1340 1341 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1342 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1343 return; 1344 } 1345 1346 break; 1347 1348 default: 1349 rv = AE_TYPE; 1350 goto fail; 1351 } 1352 1353 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1354 1355 if (ACPI_SUCCESS(rv)) { 1356 sysmon_pswitch_unregister(smpsw); 1357 return; 1358 } 1359 1360 fail: 1361 aprint_error_dev(sc->sc_dev, "failed to deregister " 1362 "fixed event: %s\n", AcpiFormatException(rv)); 1363 } 1364 1365 static uint32_t 1366 acpi_fixed_button_handler(void *context) 1367 { 1368 static const int handler = OSL_NOTIFY_HANDLER; 1369 struct sysmon_pswitch *smpsw = context; 1370 1371 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "fixed event\n")); 1372 1373 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1374 1375 return ACPI_INTERRUPT_HANDLED; 1376 } 1377 1378 static void 1379 acpi_fixed_button_pressed(void *context) 1380 { 1381 struct sysmon_pswitch *smpsw = context; 1382 1383 ACPI_DEBUG_PRINT((ACPI_DB_INFO, 1384 "%s fixed button pressed\n", smpsw->smpsw_name)); 1385 1386 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1387 } 1388 1389 /* 1390 * Sleep. 1391 */ 1392 static void 1393 acpi_sleep_init(struct acpi_softc *sc) 1394 { 1395 uint8_t a, b, i; 1396 ACPI_STATUS rv; 1397 1398 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1399 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1400 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1401 1402 /* 1403 * Evaluate supported sleep states. 1404 */ 1405 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1406 1407 rv = AcpiGetSleepTypeData(i, &a, &b); 1408 1409 if (ACPI_SUCCESS(rv)) 1410 sc->sc_sleepstates |= __BIT(i); 1411 } 1412 } 1413 1414 void 1415 acpi_enter_sleep_state(struct acpi_softc *sc, int state) 1416 { 1417 ACPI_STATUS rv; 1418 int err; 1419 1420 if (state == sc->sc_sleepstate) 1421 return; 1422 1423 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1424 1425 switch (state) { 1426 1427 case ACPI_STATE_S0: 1428 sc->sc_sleepstate = ACPI_STATE_S0; 1429 return; 1430 1431 case ACPI_STATE_S1: 1432 case ACPI_STATE_S2: 1433 case ACPI_STATE_S3: 1434 case ACPI_STATE_S4: 1435 1436 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1437 aprint_error_dev(sc->sc_dev, "sleep state " 1438 "S%d is not available\n", state); 1439 return; 1440 } 1441 1442 /* 1443 * Evaluate the _TTS method. This should be done before 1444 * pmf_system_suspend(9) and the evaluation of _PTS. 1445 * We should also re-evaluate this once we return to 1446 * S0 or if we abort the sleep state transition in the 1447 * middle (see ACPI 3.0, section 7.3.6). In reality, 1448 * however, the _TTS method is seldom seen in the field. 1449 */ 1450 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1451 1452 if (ACPI_SUCCESS(rv)) 1453 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1454 1455 acpi_wakedev_commit(sc, state); 1456 1457 if (state != ACPI_STATE_S1 && 1458 pmf_system_suspend(PMF_Q_NONE) != true) { 1459 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1460 break; 1461 } 1462 1463 /* 1464 * This will evaluate the _PTS and _SST methods, 1465 * but unlike the documentation claims, not _GTS, 1466 * which is evaluated in AcpiEnterSleepState(). 1467 * 1468 * This must be called with interrupts enabled. 1469 */ 1470 rv = AcpiEnterSleepStatePrep(state); 1471 1472 if (ACPI_FAILURE(rv)) { 1473 aprint_error_dev(sc->sc_dev, "failed to prepare " 1474 "S%d: %s\n", state, AcpiFormatException(rv)); 1475 break; 1476 } 1477 1478 sc->sc_sleepstate = state; 1479 1480 if (state == ACPI_STATE_S1) { 1481 1482 /* Just enter the state. */ 1483 acpi_md_OsDisableInterrupt(); 1484 rv = AcpiEnterSleepState(state); 1485 1486 if (ACPI_FAILURE(rv)) 1487 aprint_error_dev(sc->sc_dev, "failed to " 1488 "enter S1: %s\n", AcpiFormatException(rv)); 1489 1490 (void)AcpiLeaveSleepState(state); 1491 1492 } else { 1493 1494 err = acpi_md_sleep(state); 1495 1496 if (state == ACPI_STATE_S4) 1497 AcpiEnable(); 1498 1499 pmf_system_bus_resume(PMF_Q_NONE); 1500 (void)AcpiLeaveSleepState(state); 1501 pmf_system_resume(PMF_Q_NONE); 1502 } 1503 1504 break; 1505 1506 case ACPI_STATE_S5: 1507 1508 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1509 1510 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1511 1512 if (ACPI_FAILURE(rv)) { 1513 aprint_error_dev(sc->sc_dev, "failed to prepare " 1514 "S%d: %s\n", state, AcpiFormatException(rv)); 1515 break; 1516 } 1517 1518 DELAY(1000000); 1519 1520 sc->sc_sleepstate = state; 1521 acpi_md_OsDisableInterrupt(); 1522 1523 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1524 1525 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1526 1527 break; 1528 } 1529 1530 sc->sc_sleepstate = ACPI_STATE_S0; 1531 1532 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1533 } 1534 1535 /* 1536 * Sysctl. 1537 */ 1538 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1539 { 1540 const struct sysctlnode *mnode, *rnode; 1541 int err; 1542 1543 err = sysctl_createv(clog, 0, NULL, &rnode, 1544 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", 1545 NULL, NULL, 0, NULL, 0, 1546 CTL_HW, CTL_EOL); 1547 1548 if (err != 0) 1549 return; 1550 1551 err = sysctl_createv(clog, 0, &rnode, &rnode, 1552 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1553 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1554 NULL, 0, NULL, 0, 1555 CTL_CREATE, CTL_EOL); 1556 1557 if (err != 0) 1558 return; 1559 1560 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1561 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1562 "root", SYSCTL_DESCR("ACPI root pointer"), 1563 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1564 CTL_CREATE, CTL_EOL); 1565 1566 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1567 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1568 "supported_states", SYSCTL_DESCR("Supported system states"), 1569 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1570 CTL_CREATE, CTL_EOL); 1571 1572 err = sysctl_createv(NULL, 0, NULL, &mnode, 1573 CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep", 1574 NULL, NULL, 0, NULL, 0, 1575 CTL_MACHDEP, CTL_EOL); 1576 1577 if (err == 0) { 1578 1579 (void)sysctl_createv(NULL, 0, &mnode, NULL, 1580 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1581 "sleep_state", SYSCTL_DESCR("System sleep state"), 1582 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1583 CTL_CREATE, CTL_EOL); 1584 } 1585 1586 err = sysctl_createv(clog, 0, &rnode, &rnode, 1587 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1588 "stat", SYSCTL_DESCR("ACPI statistics"), 1589 NULL, 0, NULL, 0, 1590 CTL_CREATE, CTL_EOL); 1591 1592 if (err != 0) 1593 return; 1594 1595 (void)sysctl_createv(clog, 0, &rnode, NULL, 1596 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1597 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1598 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1599 CTL_CREATE, CTL_EOL); 1600 1601 (void)sysctl_createv(clog, 0, &rnode, NULL, 1602 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1603 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1604 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1605 CTL_CREATE, CTL_EOL); 1606 1607 (void)sysctl_createv(clog, 0, &rnode, NULL, 1608 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1609 "fixed", SYSCTL_DESCR("Number of fixed events"), 1610 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1611 CTL_CREATE, CTL_EOL); 1612 1613 (void)sysctl_createv(clog, 0, &rnode, NULL, 1614 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1615 "method", SYSCTL_DESCR("Number of methods executed"), 1616 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1617 CTL_CREATE, CTL_EOL); 1618 1619 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1620 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1621 } 1622 1623 static int 1624 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1625 { 1626 struct sysctlnode node; 1627 uint64_t t; 1628 int err, i; 1629 1630 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1631 t += AcpiFixedEventCount[i]; 1632 1633 node = *rnode; 1634 node.sysctl_data = &t; 1635 1636 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1637 1638 if (err || newp == NULL) 1639 return err; 1640 1641 return 0; 1642 } 1643 1644 static int 1645 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1646 { 1647 struct acpi_softc *sc = acpi_softc; 1648 struct sysctlnode node; 1649 int err, t; 1650 1651 if (acpi_softc == NULL) 1652 return ENOSYS; 1653 1654 node = *rnode; 1655 t = sc->sc_sleepstate; 1656 node.sysctl_data = &t; 1657 1658 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1659 1660 if (err || newp == NULL) 1661 return err; 1662 1663 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1664 return EINVAL; 1665 1666 acpi_enter_sleep_state(sc, t); 1667 1668 return 0; 1669 } 1670 1671 static int 1672 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1673 { 1674 struct acpi_softc *sc = acpi_softc; 1675 struct sysctlnode node; 1676 char t[3 * 6 + 1]; 1677 int err; 1678 1679 if (acpi_softc == NULL) 1680 return ENOSYS; 1681 1682 (void)memset(t, '\0', sizeof(t)); 1683 1684 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1685 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1686 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1687 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1688 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1689 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1690 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1691 1692 node = *rnode; 1693 node.sysctl_data = &t; 1694 1695 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1696 1697 if (err || newp == NULL) 1698 return err; 1699 1700 return 0; 1701 } 1702 1703 /* 1704 * Miscellaneous. 1705 */ 1706 static bool 1707 acpi_is_scope(struct acpi_devnode *ad) 1708 { 1709 int i; 1710 1711 /* 1712 * Return true if the node is a root scope. 1713 */ 1714 if (ad->ad_parent == NULL) 1715 return false; 1716 1717 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1718 return false; 1719 1720 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1721 1722 if (acpi_scopes[i] == NULL) 1723 continue; 1724 1725 if (ad->ad_handle == acpi_scopes[i]) 1726 return true; 1727 } 1728 1729 return false; 1730 } 1731 1732 ACPI_PHYSICAL_ADDRESS 1733 acpi_OsGetRootPointer(void) 1734 { 1735 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1736 1737 /* 1738 * We let MD code handle this since there are multiple ways to do it: 1739 * 1740 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1741 * 1742 * IA-64: Use the EFI. 1743 */ 1744 PhysicalAddress = acpi_md_OsGetRootPointer(); 1745 1746 if (acpi_root_pointer == 0) 1747 acpi_root_pointer = PhysicalAddress; 1748 1749 return PhysicalAddress; 1750 } 1751 1752 static ACPI_TABLE_HEADER * 1753 acpi_map_rsdt(void) 1754 { 1755 ACPI_PHYSICAL_ADDRESS paddr; 1756 ACPI_TABLE_RSDP *rsdp; 1757 1758 paddr = AcpiOsGetRootPointer(); 1759 1760 if (paddr == 0) 1761 return NULL; 1762 1763 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1764 1765 if (rsdp == NULL) 1766 return NULL; 1767 1768 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1769 paddr = rsdp->XsdtPhysicalAddress; 1770 else 1771 paddr = rsdp->RsdtPhysicalAddress; 1772 1773 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1774 1775 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1776 } 1777 1778 static void 1779 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1780 { 1781 1782 if (rsdt == NULL) 1783 return; 1784 1785 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1786 } 1787
Indexes created Wed Oct 01 19:09:53 GMT 2025