acpi.c revision 1.179
1 /* $NetBSD: acpi.c,v 1.179 2010/04/20 04:57:04 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 1.179 2010/04/20 04:57:04 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_timer.h> 86 #include <dev/acpi/acpi_wakedev.h> 87 88 #ifdef ACPIVERBOSE 89 #include <dev/acpi/acpidevs_data.h> 90 #endif 91 92 #define _COMPONENT ACPI_BUS_COMPONENT 93 ACPI_MODULE_NAME ("acpi") 94 95 #if defined(ACPI_PCI_FIXUP) 96 #error The option ACPI_PCI_FIXUP has been obsoleted by PCI_INTR_FIXUP_DISABLED. Please adjust your kernel configuration file. 97 #endif 98 99 #ifdef PCI_INTR_FIXUP_DISABLED 100 #include <dev/pci/pcidevs.h> 101 #endif 102 103 MALLOC_DECLARE(M_ACPI); 104 105 #include <machine/acpi_machdep.h> 106 107 #ifdef ACPI_DEBUGGER 108 #define ACPI_DBGR_INIT 0x01 109 #define ACPI_DBGR_TABLES 0x02 110 #define ACPI_DBGR_ENABLE 0x04 111 #define ACPI_DBGR_PROBE 0x08 112 #define ACPI_DBGR_RUNNING 0x10 113 114 static int acpi_dbgr = 0x00; 115 #endif 116 117 /* 118 * This is a flag we set when the ACPI subsystem is active. Machine 119 * dependent code may wish to skip other steps (such as attaching 120 * subsystems that ACPI supercedes) when ACPI is active. 121 */ 122 int acpi_active; 123 int acpi_force_load; 124 int acpi_suspended = 0; 125 126 struct acpi_softc *acpi_softc; 127 static uint64_t acpi_root_pointer; 128 extern kmutex_t acpi_interrupt_list_mtx; 129 130 /* 131 * This structure provides a context for the ACPI 132 * namespace walk performed in acpi_build_tree(). 133 */ 134 struct acpi_walkcontext { 135 struct acpi_softc *aw_sc; 136 struct acpi_devnode *aw_parent; 137 }; 138 139 /* 140 * Ignored HIDs. 141 */ 142 static const char * const acpi_ignored_ids[] = { 143 #if defined(i386) || defined(x86_64) 144 "PNP0000", /* AT interrupt controller is handled internally */ 145 "PNP0200", /* AT DMA controller is handled internally */ 146 "PNP0A??", /* PCI Busses are handled internally */ 147 "PNP0B00", /* AT RTC is handled internally */ 148 "PNP0C01", /* No "System Board" driver */ 149 "PNP0C02", /* No "PnP motherboard register resources" driver */ 150 "PNP0C0B", /* No need for "ACPI fan" driver */ 151 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 152 "IFX0102", /* No driver for Infineon TPM */ 153 "INT0800", /* No driver for Intel Firmware Hub device */ 154 #endif 155 #if defined(x86_64) 156 "PNP0C04", /* FPU is handled internally */ 157 #endif 158 NULL 159 }; 160 161 static int acpi_match(device_t, cfdata_t, void *); 162 static int acpi_submatch(device_t, cfdata_t, const int *, void *); 163 static void acpi_attach(device_t, device_t, void *); 164 static int acpi_detach(device_t, int); 165 static void acpi_childdet(device_t, device_t); 166 static bool acpi_suspend(device_t, const pmf_qual_t *); 167 static bool acpi_resume(device_t, const pmf_qual_t *); 168 169 static void acpi_build_tree(struct acpi_softc *); 170 171 #ifdef ACPI_DEBUG 172 static void acpi_print_tree(struct acpi_devnode *, uint32_t); 173 #endif 174 175 static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, 176 void *, void **); 177 static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t, 178 void *, void **); 179 180 #ifdef ACPI_ACTIVATE_DEV 181 static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **); 182 static ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE); 183 #endif 184 185 static int acpi_rescan(device_t, const char *, const int *); 186 static void acpi_rescan1(struct acpi_softc *, 187 const char *, const int *); 188 static void acpi_rescan_nodes(struct acpi_softc *); 189 static void acpi_rescan_capabilities(struct acpi_softc *); 190 static int acpi_print(void *aux, const char *); 191 192 static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); 193 194 static void acpi_register_fixed_button(struct acpi_softc *, int); 195 static void acpi_deregister_fixed_button(struct acpi_softc *, int); 196 static uint32_t acpi_fixed_button_handler(void *); 197 static void acpi_fixed_button_pressed(void *); 198 199 static void acpi_sleep_init(struct acpi_softc *); 200 201 static int sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS); 202 static int sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS); 203 static int sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS); 204 205 static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 206 static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 207 208 extern struct cfdriver acpi_cd; 209 210 CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 211 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 212 213 /* 214 * Probe for ACPI support. 215 * 216 * This is called by the machine-dependent ACPI front-end. 217 * Note: this is not an autoconfiguration interface function. 218 */ 219 int 220 acpi_probe(void) 221 { 222 ACPI_TABLE_HEADER *rsdt; 223 const char *func; 224 static int once; 225 bool initialized; 226 ACPI_STATUS rv; 227 228 if (once != 0) 229 panic("%s: already probed", __func__); 230 231 once = 1; 232 func = NULL; 233 initialized = false; 234 235 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 236 237 /* 238 * Start up ACPICA. 239 */ 240 #ifdef ACPI_DEBUGGER 241 if (acpi_dbgr & ACPI_DBGR_INIT) 242 acpi_osd_debugger(); 243 #endif 244 245 CTASSERT(TRUE == true); 246 CTASSERT(FALSE == false); 247 248 AcpiGbl_AllMethodsSerialized = false; 249 AcpiGbl_EnableInterpreterSlack = true; 250 251 rv = AcpiInitializeSubsystem(); 252 253 if (ACPI_SUCCESS(rv)) 254 initialized = true; 255 else { 256 func = "AcpiInitializeSubsystem()"; 257 goto fail; 258 } 259 260 /* 261 * Allocate space for RSDT/XSDT and DSDT, 262 * but allow resizing if more tables exist. 263 */ 264 rv = AcpiInitializeTables(NULL, 2, true); 265 266 if (ACPI_FAILURE(rv)) { 267 func = "AcpiInitializeTables()"; 268 goto fail; 269 } 270 271 #ifdef ACPI_DEBUGGER 272 if (acpi_dbgr & ACPI_DBGR_TABLES) 273 acpi_osd_debugger(); 274 #endif 275 276 rv = AcpiLoadTables(); 277 278 if (ACPI_FAILURE(rv)) { 279 func = "AcpiLoadTables()"; 280 goto fail; 281 } 282 283 rsdt = acpi_map_rsdt(); 284 285 if (rsdt == NULL) { 286 func = "acpi_map_rsdt()"; 287 rv = AE_ERROR; 288 goto fail; 289 } 290 291 if (acpi_force_load == 0 && (acpi_find_quirks() & ACPI_QUIRK_BROKEN)) { 292 aprint_normal("ACPI: BIOS is listed as broken:\n"); 293 aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 294 "AslId <%4.4s,%08x>\n", 295 rsdt->OemId, rsdt->OemTableId, 296 rsdt->OemRevision, 297 rsdt->AslCompilerId, 298 rsdt->AslCompilerRevision); 299 aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n"); 300 acpi_unmap_rsdt(rsdt); 301 AcpiTerminate(); 302 return 0; 303 } 304 305 acpi_unmap_rsdt(rsdt); 306 307 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 308 309 if (ACPI_FAILURE(rv)) { 310 func = "AcpiEnableSubsystem()"; 311 goto fail; 312 } 313 314 /* 315 * Looks like we have ACPI! 316 */ 317 return 1; 318 319 fail: 320 KASSERT(rv != AE_OK); 321 KASSERT(func != NULL); 322 323 aprint_error("%s: failed to probe ACPI: %s\n", 324 func, AcpiFormatException(rv)); 325 326 if (initialized != false) 327 (void)AcpiTerminate(); 328 329 return 0; 330 } 331 332 int 333 acpi_check(device_t parent, const char *ifattr) 334 { 335 return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); 336 } 337 338 /* 339 * Autoconfiguration. 340 */ 341 static int 342 acpi_match(device_t parent, cfdata_t match, void *aux) 343 { 344 /* 345 * XXX: Nada; MD code has called acpi_probe(). 346 */ 347 return 1; 348 } 349 350 static int 351 acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 352 { 353 struct cfattach *ca; 354 355 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 356 357 return (ca == &acpi_ca); 358 } 359 360 static void 361 acpi_attach(device_t parent, device_t self, void *aux) 362 { 363 struct acpi_softc *sc = device_private(self); 364 struct acpibus_attach_args *aa = aux; 365 ACPI_TABLE_HEADER *rsdt; 366 ACPI_STATUS rv; 367 368 aprint_naive("\n"); 369 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 370 371 if (acpi_softc != NULL) 372 panic("%s: already attached", __func__); 373 374 rsdt = acpi_map_rsdt(); 375 376 if (rsdt == NULL) 377 aprint_error_dev(self, "X/RSDT: Not found\n"); 378 else { 379 aprint_verbose_dev(self, 380 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 381 rsdt->OemId, rsdt->OemTableId, 382 rsdt->OemRevision, 383 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 384 } 385 386 acpi_unmap_rsdt(rsdt); 387 388 sc->sc_dev = self; 389 sc->sc_root = NULL; 390 391 sc->sc_sleepstate = ACPI_STATE_S0; 392 sc->sc_quirks = acpi_find_quirks(); 393 394 sysmon_power_settype("acpi"); 395 396 sc->sc_iot = aa->aa_iot; 397 sc->sc_memt = aa->aa_memt; 398 sc->sc_pc = aa->aa_pc; 399 sc->sc_pciflags = aa->aa_pciflags; 400 sc->sc_ic = aa->aa_ic; 401 402 SIMPLEQ_INIT(&sc->ad_head); 403 404 acpi_softc = sc; 405 406 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) 407 aprint_error_dev(self, "couldn't establish power handler\n"); 408 409 /* 410 * Bring ACPI on-line. 411 */ 412 #ifdef ACPI_DEBUGGER 413 if (acpi_dbgr & ACPI_DBGR_ENABLE) 414 acpi_osd_debugger(); 415 #endif 416 417 #define ACPI_ENABLE_PHASE1 \ 418 (ACPI_NO_HANDLER_INIT | ACPI_NO_EVENT_INIT) 419 #define ACPI_ENABLE_PHASE2 \ 420 (ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE | \ 421 ACPI_NO_ADDRESS_SPACE_INIT) 422 423 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE1); 424 425 if (ACPI_FAILURE(rv)) 426 goto fail; 427 428 acpi_md_callback(); 429 430 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE2); 431 432 if (ACPI_FAILURE(rv)) 433 goto fail; 434 435 /* 436 * Early EC handler initialization if ECDT table is available. 437 */ 438 config_found_ia(self, "acpiecdtbus", aa, NULL); 439 440 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 441 442 if (ACPI_FAILURE(rv)) 443 goto fail; 444 445 /* 446 * Install global notify handlers. 447 */ 448 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 449 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 450 451 if (ACPI_FAILURE(rv)) 452 goto fail; 453 454 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 455 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 456 457 if (ACPI_FAILURE(rv)) 458 goto fail; 459 460 acpi_active = 1; 461 462 /* Show SCI interrupt. */ 463 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 464 AcpiGbl_FADT.SciInterrupt); 465 466 /* 467 * Install fixed-event handlers. 468 */ 469 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 470 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 471 472 acpitimer_init(); 473 474 #ifdef ACPI_DEBUGGER 475 if (acpi_dbgr & ACPI_DBGR_PROBE) 476 acpi_osd_debugger(); 477 #endif 478 479 /* 480 * Scan the namespace and build our device tree. 481 */ 482 acpi_build_tree(sc); 483 acpi_sleep_init(sc); 484 485 #ifdef ACPI_DEBUGGER 486 if (acpi_dbgr & ACPI_DBGR_RUNNING) 487 acpi_osd_debugger(); 488 #endif 489 490 #ifdef ACPI_DEBUG 491 acpi_debug_init(); 492 #endif 493 494 return; 495 496 fail: 497 KASSERT(rv != AE_OK); 498 499 aprint_error("%s: failed to initialize ACPI: %s\n", 500 __func__, AcpiFormatException(rv)); 501 } 502 503 /* 504 * XXX: This is incomplete. 505 */ 506 static int 507 acpi_detach(device_t self, int flags) 508 { 509 struct acpi_softc *sc = device_private(self); 510 ACPI_STATUS rv; 511 int rc; 512 513 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 514 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 515 516 if (ACPI_FAILURE(rv)) 517 return EBUSY; 518 519 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 520 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 521 522 if (ACPI_FAILURE(rv)) 523 return EBUSY; 524 525 if ((rc = config_detach_children(self, flags)) != 0) 526 return rc; 527 528 if ((rc = acpitimer_detach()) != 0) 529 return rc; 530 531 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 532 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 533 534 pmf_device_deregister(self); 535 536 acpi_softc = NULL; 537 538 return 0; 539 } 540 541 /* 542 * XXX: Need to reclaim any resources? Yes. 543 */ 544 static void 545 acpi_childdet(device_t self, device_t child) 546 { 547 struct acpi_softc *sc = device_private(self); 548 struct acpi_devnode *ad; 549 550 if (sc->sc_apmbus == child) 551 sc->sc_apmbus = NULL; 552 553 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 554 555 if (ad->ad_device == child) 556 ad->ad_device = NULL; 557 } 558 } 559 560 static bool 561 acpi_suspend(device_t dv, const pmf_qual_t *qual) 562 { 563 564 acpi_suspended = 1; 565 566 return true; 567 } 568 569 static bool 570 acpi_resume(device_t dv, const pmf_qual_t *qual) 571 { 572 573 acpi_suspended = 0; 574 575 return true; 576 } 577 578 /* 579 * Namespace scan. 580 */ 581 static void 582 acpi_build_tree(struct acpi_softc *sc) 583 { 584 struct acpi_walkcontext awc; 585 586 awc.aw_sc = sc; 587 awc.aw_parent = NULL; 588 589 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 590 591 KASSERT(sc->sc_root == NULL); 592 KASSERT(awc.aw_parent != NULL); 593 594 sc->sc_root = awc.aw_parent; 595 596 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 597 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 598 599 #ifdef ACPI_DEBUG 600 acpi_print_tree(sc->sc_root, 0); 601 #endif 602 603 acpi_rescan1(sc, NULL, NULL); 604 acpi_rescan_capabilities(sc); 605 606 acpi_pcidev_scan(sc); 607 } 608 609 #ifdef ACPI_DEBUG 610 static void 611 acpi_print_tree(struct acpi_devnode *ad, uint32_t level) 612 { 613 struct acpi_devnode *child; 614 uint32_t i; 615 616 for (i = 0; i < level; i++) 617 aprint_normal(" "); 618 619 aprint_normal("[%02u] %-5s\n", ad->ad_type, ad->ad_name); 620 621 SIMPLEQ_FOREACH(child, &ad->ad_child_head, ad_child_list) 622 acpi_print_tree(child, level + 1); 623 } 624 #endif 625 626 static ACPI_STATUS 627 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 628 void *context, void **status) 629 { 630 struct acpi_walkcontext *awc = context; 631 struct acpi_softc *sc = awc->aw_sc; 632 struct acpi_devnode *ad; 633 ACPI_DEVICE_INFO *devinfo; 634 ACPI_OBJECT_TYPE type; 635 ACPI_NAME_UNION *anu; 636 ACPI_STATUS rv; 637 int clear, i; 638 639 rv = AcpiGetObjectInfo(handle, &devinfo); 640 641 if (ACPI_FAILURE(rv)) 642 return AE_OK; /* Do not terminate the walk. */ 643 644 type = devinfo->Type; 645 646 switch (type) { 647 648 case ACPI_TYPE_DEVICE: 649 650 #ifdef ACPI_ACTIVATE_DEV 651 acpi_activate_device(handle, &devinfo); 652 #endif 653 654 case ACPI_TYPE_PROCESSOR: 655 case ACPI_TYPE_THERMAL: 656 case ACPI_TYPE_POWER: 657 658 ad = malloc(sizeof(*ad), M_ACPI, M_NOWAIT | M_ZERO); 659 660 if (ad == NULL) 661 return AE_NO_MEMORY; 662 663 ad->ad_device = NULL; 664 ad->ad_notify = NULL; 665 666 ad->ad_type = type; 667 ad->ad_handle = handle; 668 ad->ad_devinfo = devinfo; 669 670 ad->ad_root = sc->sc_dev; 671 ad->ad_parent = awc->aw_parent; 672 673 anu = (ACPI_NAME_UNION *)&devinfo->Name; 674 ad->ad_name[4] = '\0'; 675 676 for (i = 3, clear = 0; i >= 0; i--) { 677 678 if (clear == 0 && anu->Ascii[i] == '_') 679 ad->ad_name[i] = '\0'; 680 else { 681 ad->ad_name[i] = anu->Ascii[i]; 682 clear = 1; 683 } 684 } 685 686 if (ad->ad_name[0] == '\0') 687 ad->ad_name[0] = '_'; 688 689 SIMPLEQ_INIT(&ad->ad_child_head); 690 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 691 692 if (ad->ad_parent != NULL) { 693 694 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 695 ad, ad_child_list); 696 } 697 698 awc->aw_parent = ad; 699 700 #ifdef ACPIVERBOSE 701 702 if (type != ACPI_TYPE_DEVICE) 703 return AE_OK; 704 705 aprint_normal_dev(sc->sc_dev, "%-5s ", ad->ad_name); 706 707 aprint_normal("HID %-10s ", 708 ((devinfo->Valid & ACPI_VALID_HID) != 0) ? 709 devinfo->HardwareId.String: "-"); 710 711 aprint_normal("UID %-4s ", 712 ((devinfo->Valid & ACPI_VALID_UID) != 0) ? 713 devinfo->UniqueId.String : "-"); 714 715 if ((devinfo->Valid & ACPI_VALID_STA) != 0) 716 aprint_normal("STA 0x%08X ", devinfo->CurrentStatus); 717 else 718 aprint_normal("STA %10s ", "-"); 719 720 if ((devinfo->Valid & ACPI_VALID_ADR) != 0) 721 aprint_normal("ADR 0x%016" PRIX64"", 722 devinfo->Address); 723 724 aprint_normal("\n"); 725 #endif 726 } 727 728 return AE_OK; 729 } 730 731 static ACPI_STATUS 732 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 733 void *context, void **status) 734 { 735 struct acpi_walkcontext *awc = context; 736 737 KASSERT(awc != NULL); 738 KASSERT(awc->aw_parent != NULL); 739 740 if (handle == awc->aw_parent->ad_handle) 741 awc->aw_parent = awc->aw_parent->ad_parent; 742 743 return AE_OK; 744 } 745 746 #ifdef ACPI_ACTIVATE_DEV 747 748 #define ACPI_DEV_VALID (ACPI_VALID_STA | ACPI_VALID_HID) 749 #define ACPI_DEV_STATUS (ACPI_STA_DEV_PRESENT | ACPI_STA_DEV_ENABLED) 750 751 static void 752 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 753 { 754 ACPI_DEVICE_INFO *newdi; 755 ACPI_STATUS rv; 756 uint32_t old; 757 758 /* 759 * If the device is valid and present, 760 * but not enabled, try to activate it. 761 */ 762 if (((*di)->Valid & ACPI_DEV_VALID) != ACPI_DEV_VALID) 763 return; 764 765 old = (*di)->CurrentStatus; 766 767 if ((old & ACPI_DEV_STATUS) != ACPI_STA_DEV_PRESENT) 768 return; 769 770 rv = acpi_allocate_resources(handle); 771 772 if (ACPI_FAILURE(rv)) 773 goto fail; 774 775 rv = AcpiGetObjectInfo(handle, &newdi); 776 777 if (ACPI_FAILURE(rv)) 778 goto fail; 779 780 ACPI_FREE(*di); 781 *di = newdi; 782 783 aprint_verbose_dev(acpi_softc->sc_dev, 784 "%s activated, STA 0x%08X -> STA 0x%08X\n", 785 (*di)->HardwareId.String, old, (*di)->CurrentStatus); 786 787 return; 788 789 fail: 790 aprint_error_dev(acpi_softc->sc_dev, "failed to " 791 "activate %s\n", (*di)->HardwareId.String); 792 } 793 794 /* 795 * XXX: This very incomplete. 796 */ 797 ACPI_STATUS 798 acpi_allocate_resources(ACPI_HANDLE handle) 799 { 800 ACPI_BUFFER bufp, bufc, bufn; 801 ACPI_RESOURCE *resp, *resc, *resn; 802 ACPI_RESOURCE_IRQ *irq; 803 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 804 ACPI_STATUS rv; 805 uint delta; 806 807 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 808 if (ACPI_FAILURE(rv)) 809 goto out; 810 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 811 if (ACPI_FAILURE(rv)) { 812 goto out1; 813 } 814 815 bufn.Length = 1000; 816 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 817 resp = bufp.Pointer; 818 resc = bufc.Pointer; 819 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 820 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 821 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 822 resp = ACPI_NEXT_RESOURCE(resp); 823 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 824 break; 825 /* Found identical Id */ 826 resn->Type = resc->Type; 827 switch (resc->Type) { 828 case ACPI_RESOURCE_TYPE_IRQ: 829 memcpy(&resn->Data, &resp->Data, 830 sizeof(ACPI_RESOURCE_IRQ)); 831 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 832 irq->Interrupts[0] = 833 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 834 Interrupts[irq->InterruptCount-1]; 835 irq->InterruptCount = 1; 836 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 837 break; 838 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 839 memcpy(&resn->Data, &resp->Data, 840 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 841 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 842 #if 0 843 /* 844 * XXX: Not duplicating the interrupt logic above 845 * because its not clear what it accomplishes. 846 */ 847 xirq->Interrupts[0] = 848 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 849 Interrupts[irq->NumberOfInterrupts-1]; 850 xirq->NumberOfInterrupts = 1; 851 #endif 852 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 853 break; 854 case ACPI_RESOURCE_TYPE_IO: 855 memcpy(&resn->Data, &resp->Data, 856 sizeof(ACPI_RESOURCE_IO)); 857 resn->Length = resp->Length; 858 break; 859 default: 860 aprint_error_dev(acpi_softc->sc_dev, 861 "%s: invalid type %u\n", __func__, resc->Type); 862 rv = AE_BAD_DATA; 863 goto out2; 864 } 865 resc = ACPI_NEXT_RESOURCE(resc); 866 resn = ACPI_NEXT_RESOURCE(resn); 867 resp = ACPI_NEXT_RESOURCE(resp); 868 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 869 if (delta >= 870 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 871 bufn.Length *= 2; 872 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 873 M_ACPI, M_WAITOK); 874 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 875 delta); 876 } 877 } 878 879 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 880 aprint_error_dev(acpi_softc->sc_dev, 881 "%s: resc not exhausted\n", __func__); 882 rv = AE_BAD_DATA; 883 goto out3; 884 } 885 886 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 887 rv = AcpiSetCurrentResources(handle, &bufn); 888 889 if (ACPI_FAILURE(rv)) 890 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 891 "resources: %s\n", __func__, AcpiFormatException(rv)); 892 893 out3: 894 free(bufn.Pointer, M_ACPI); 895 out2: 896 ACPI_FREE(bufc.Pointer); 897 out1: 898 ACPI_FREE(bufp.Pointer); 899 out: 900 return rv; 901 } 902 903 #undef ACPI_DEV_VALID 904 #undef ACPI_DEV_STATUS 905 906 #endif /* ACPI_ACTIVATE_DEV */ 907 908 /* 909 * Device attachment. 910 */ 911 static int 912 acpi_rescan(device_t self, const char *ifattr, const int *locators) 913 { 914 struct acpi_softc *sc = device_private(self); 915 916 acpi_rescan1(sc, ifattr, locators); 917 918 return 0; 919 } 920 921 static void 922 acpi_rescan1(struct acpi_softc *sc, const char *ifattr, const int *locators) 923 { 924 925 if (ifattr_match(ifattr, "acpinodebus")) 926 acpi_rescan_nodes(sc); 927 928 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 929 sc->sc_apmbus = config_found_ia(sc->sc_dev, 930 "acpiapmbus", NULL, NULL); 931 } 932 933 static void 934 acpi_rescan_nodes(struct acpi_softc *sc) 935 { 936 struct acpi_attach_args aa; 937 struct acpi_devnode *ad; 938 939 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 940 941 if (ad->ad_device != NULL) 942 continue; 943 944 aa.aa_node = ad; 945 aa.aa_iot = sc->sc_iot; 946 aa.aa_memt = sc->sc_memt; 947 aa.aa_pc = sc->sc_pc; 948 aa.aa_pciflags = sc->sc_pciflags; 949 aa.aa_ic = sc->sc_ic; 950 951 /* 952 * XXX: We only attach devices which are present, enabled, and 953 * functioning properly. However, if a device is enabled, 954 * it is decoding resources and we should claim these, 955 * if possible. This requires changes to bus_space(9). 956 */ 957 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) { 958 959 if ((ad->ad_devinfo->Valid & ACPI_VALID_STA) == 960 ACPI_VALID_STA && 961 (ad->ad_devinfo->CurrentStatus & 962 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED| 963 ACPI_STA_DEV_OK)) != 964 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED| 965 ACPI_STA_DEV_OK)) 966 continue; 967 } 968 969 /* 970 * XXX: The same problem as above. As for example 971 * thermal zones and power resources do not 972 * have a valid HID, only evaluate devices. 973 */ 974 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE && 975 (ad->ad_devinfo->Valid & ACPI_VALID_HID) == 0) 976 continue; 977 978 /* 979 * Handled internally. 980 */ 981 if (ad->ad_devinfo->Type == ACPI_TYPE_PROCESSOR || 982 ad->ad_devinfo->Type == ACPI_TYPE_POWER) 983 continue; 984 985 /* 986 * Skip ignored HIDs. 987 */ 988 if (acpi_match_hid(ad->ad_devinfo, acpi_ignored_ids)) 989 continue; 990 991 ad->ad_device = config_found_ia(sc->sc_dev, 992 "acpinodebus", &aa, acpi_print); 993 } 994 } 995 996 #define ACPI_STA_DEV_VALID \ 997 (ACPI_STA_DEV_PRESENT | ACPI_STA_DEV_ENABLED | ACPI_STA_DEV_OK) 998 999 static void 1000 acpi_rescan_capabilities(struct acpi_softc *sc) 1001 { 1002 struct acpi_devnode *ad; 1003 ACPI_DEVICE_INFO *di; 1004 ACPI_HANDLE tmp; 1005 ACPI_STATUS rv; 1006 1007 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1008 1009 di = ad->ad_devinfo; 1010 1011 if (di->Type != ACPI_TYPE_DEVICE) 1012 continue; 1013 1014 if ((di->Valid & ACPI_VALID_STA) != 0 && 1015 (di->CurrentStatus & ACPI_STA_DEV_VALID) != 1016 ACPI_STA_DEV_VALID) 1017 continue; 1018 1019 /* 1020 * Scan power resource capabilities. 1021 */ 1022 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 1023 1024 if (ACPI_FAILURE(rv)) 1025 rv = AcpiGetHandle(ad->ad_handle, "_PSC", &tmp); 1026 1027 if (ACPI_SUCCESS(rv)) 1028 ad->ad_flags |= ACPI_DEVICE_POWER; 1029 1030 /* 1031 * Scan wake-up capabilities. 1032 */ 1033 rv = AcpiGetHandle(ad->ad_handle, "_PRW", &tmp); 1034 1035 if (ACPI_SUCCESS(rv)) { 1036 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 1037 acpi_wakedev_add(ad); 1038 } 1039 1040 if (ad->ad_flags != 0) { 1041 aprint_debug_dev(sc->sc_dev, "%-5s ", ad->ad_name); 1042 1043 if ((ad->ad_flags & ACPI_DEVICE_POWER) != 0) 1044 aprint_debug("power "); 1045 1046 if ((ad->ad_flags & ACPI_DEVICE_WAKEUP) != 0) 1047 aprint_debug("wake-up "); 1048 1049 aprint_debug("\n"); 1050 } 1051 } 1052 } 1053 1054 #undef ACPI_STA_DEV_VALID 1055 1056 static int 1057 acpi_print(void *aux, const char *pnp) 1058 { 1059 struct acpi_attach_args *aa = aux; 1060 ACPI_STATUS rv; 1061 1062 if (pnp) { 1063 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1064 char *pnpstr = 1065 aa->aa_node->ad_devinfo->HardwareId.String; 1066 ACPI_BUFFER buf; 1067 1068 aprint_normal("%s (%s) ", aa->aa_node->ad_name, 1069 pnpstr); 1070 1071 rv = acpi_eval_struct(aa->aa_node->ad_handle, 1072 "_STR", &buf); 1073 if (ACPI_SUCCESS(rv)) { 1074 ACPI_OBJECT *obj = buf.Pointer; 1075 switch (obj->Type) { 1076 case ACPI_TYPE_STRING: 1077 aprint_normal("[%s] ", obj->String.Pointer); 1078 break; 1079 case ACPI_TYPE_BUFFER: 1080 aprint_normal("buffer %p ", obj->Buffer.Pointer); 1081 break; 1082 default: 1083 aprint_normal("type %u ",obj->Type); 1084 break; 1085 } 1086 ACPI_FREE(buf.Pointer); 1087 } 1088 #ifdef ACPIVERBOSE 1089 else { 1090 int i; 1091 1092 for (i = 0; i < __arraycount(acpi_knowndevs); 1093 i++) { 1094 if (strcmp(acpi_knowndevs[i].pnp, 1095 pnpstr) == 0) { 1096 aprint_normal("[%s] ", 1097 acpi_knowndevs[i].str); 1098 } 1099 } 1100 } 1101 1102 #endif 1103 aprint_normal("at %s", pnp); 1104 } else if (aa->aa_node->ad_devinfo->Type != ACPI_TYPE_DEVICE) { 1105 aprint_normal("%s (ACPI Object Type '%s' " 1106 "[0x%02x]) ", aa->aa_node->ad_name, 1107 AcpiUtGetTypeName(aa->aa_node->ad_devinfo->Type), 1108 aa->aa_node->ad_devinfo->Type); 1109 aprint_normal("at %s", pnp); 1110 } else 1111 return 0; 1112 } else { 1113 aprint_normal(" (%s", aa->aa_node->ad_name); 1114 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1115 aprint_normal(", %s", aa->aa_node->ad_devinfo->HardwareId.String); 1116 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_UID) { 1117 const char *uid; 1118 1119 uid = aa->aa_node->ad_devinfo->UniqueId.String; 1120 if (uid[0] == '\0') 1121 uid = "<null>"; 1122 aprint_normal("-%s", uid); 1123 } 1124 } 1125 aprint_normal(")"); 1126 } 1127 1128 return UNCONF; 1129 } 1130 1131 /* 1132 * Notify. 1133 */ 1134 static void 1135 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1136 { 1137 struct acpi_softc *sc = acpi_softc; 1138 struct acpi_devnode *ad; 1139 1140 KASSERT(sc != NULL); 1141 KASSERT(aux == NULL); 1142 KASSERT(acpi_active != 0); 1143 1144 if (acpi_suspended != 0) 1145 return; 1146 1147 /* 1148 * System: 0x00 - 0x7F. 1149 * Device: 0x80 - 0xFF. 1150 */ 1151 switch (event) { 1152 1153 case ACPI_NOTIFY_BUS_CHECK: 1154 case ACPI_NOTIFY_DEVICE_CHECK: 1155 case ACPI_NOTIFY_DEVICE_WAKE: 1156 case ACPI_NOTIFY_EJECT_REQUEST: 1157 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1158 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1159 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1160 case ACPI_NOTIFY_POWER_FAULT: 1161 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1162 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1163 case ACPI_NOTIFY_RESERVED: 1164 case ACPI_NOTIFY_LOCALITY_UPDATE: 1165 break; 1166 } 1167 1168 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1169 "%s (%p)\n", event, acpi_name(handle), handle)); 1170 1171 /* 1172 * We deliver notifications only to drivers 1173 * that have been succesfully attached and 1174 * that have registered a handler with us. 1175 * The opaque pointer is always the device_t. 1176 */ 1177 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1178 1179 if (ad->ad_device == NULL) 1180 continue; 1181 1182 if (ad->ad_notify == NULL) 1183 continue; 1184 1185 if (ad->ad_handle != handle) 1186 continue; 1187 1188 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1189 1190 return; 1191 } 1192 1193 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1194 "for %s (%p)\n", event, acpi_name(handle), handle); 1195 } 1196 1197 bool 1198 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1199 { 1200 struct acpi_softc *sc = acpi_softc; 1201 1202 KASSERT(sc != NULL); 1203 KASSERT(acpi_active != 0); 1204 1205 if (acpi_suspended != 0) 1206 goto fail; 1207 1208 if (ad == NULL || notify == NULL) 1209 goto fail; 1210 1211 ad->ad_notify = notify; 1212 1213 return true; 1214 1215 fail: 1216 aprint_error_dev(sc->sc_dev, "failed to register notify " 1217 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1218 1219 return false; 1220 } 1221 1222 void 1223 acpi_deregister_notify(struct acpi_devnode *ad) 1224 { 1225 1226 ad->ad_notify = NULL; 1227 } 1228 1229 /* 1230 * Fixed buttons. 1231 */ 1232 static void 1233 acpi_register_fixed_button(struct acpi_softc *sc, int event) 1234 { 1235 struct sysmon_pswitch *smpsw; 1236 ACPI_STATUS rv; 1237 int type; 1238 1239 switch (event) { 1240 1241 case ACPI_EVENT_POWER_BUTTON: 1242 1243 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1244 return; 1245 1246 type = PSWITCH_TYPE_POWER; 1247 smpsw = &sc->sc_smpsw_power; 1248 break; 1249 1250 case ACPI_EVENT_SLEEP_BUTTON: 1251 1252 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1253 return; 1254 1255 type = PSWITCH_TYPE_SLEEP; 1256 smpsw = &sc->sc_smpsw_sleep; 1257 break; 1258 1259 default: 1260 rv = AE_TYPE; 1261 goto fail; 1262 } 1263 1264 smpsw->smpsw_type = type; 1265 smpsw->smpsw_name = device_xname(sc->sc_dev); 1266 1267 if (sysmon_pswitch_register(smpsw) != 0) { 1268 rv = AE_ERROR; 1269 goto fail; 1270 } 1271 1272 rv = AcpiInstallFixedEventHandler(event, 1273 acpi_fixed_button_handler, smpsw); 1274 1275 if (ACPI_FAILURE(rv)) 1276 goto fail; 1277 1278 aprint_debug_dev(sc->sc_dev, "fixed %s button present\n", 1279 (type != ACPI_EVENT_SLEEP_BUTTON) ? "power" : "sleep"); 1280 1281 return; 1282 1283 fail: 1284 aprint_error_dev(sc->sc_dev, "failed to register " 1285 "fixed event: %s\n", AcpiFormatException(rv)); 1286 } 1287 1288 static void 1289 acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1290 { 1291 struct sysmon_pswitch *smpsw; 1292 ACPI_STATUS rv; 1293 1294 switch (event) { 1295 1296 case ACPI_EVENT_POWER_BUTTON: 1297 smpsw = &sc->sc_smpsw_power; 1298 1299 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1300 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1301 return; 1302 } 1303 1304 break; 1305 1306 case ACPI_EVENT_SLEEP_BUTTON: 1307 smpsw = &sc->sc_smpsw_sleep; 1308 1309 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1310 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1311 return; 1312 } 1313 1314 break; 1315 1316 default: 1317 rv = AE_TYPE; 1318 goto fail; 1319 } 1320 1321 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1322 1323 if (ACPI_SUCCESS(rv)) { 1324 sysmon_pswitch_unregister(smpsw); 1325 return; 1326 } 1327 1328 fail: 1329 aprint_error_dev(sc->sc_dev, "failed to deregister " 1330 "fixed event: %s\n", AcpiFormatException(rv)); 1331 } 1332 1333 static uint32_t 1334 acpi_fixed_button_handler(void *context) 1335 { 1336 static const int handler = OSL_NOTIFY_HANDLER; 1337 struct sysmon_pswitch *smpsw = context; 1338 1339 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s: fixed event\n", __func__)); 1340 1341 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1342 1343 return ACPI_INTERRUPT_HANDLED; 1344 } 1345 1346 static void 1347 acpi_fixed_button_pressed(void *context) 1348 { 1349 struct sysmon_pswitch *smpsw = context; 1350 1351 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s: %s fixed button pressed\n", 1352 __func__, smpsw->smpsw_name)); 1353 1354 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1355 } 1356 1357 /* 1358 * Sleep. 1359 */ 1360 static void 1361 acpi_sleep_init(struct acpi_softc *sc) 1362 { 1363 uint8_t a, b, i; 1364 ACPI_STATUS rv; 1365 1366 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1367 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1368 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1369 1370 /* 1371 * Evaluate supported sleep states. 1372 */ 1373 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1374 1375 rv = AcpiGetSleepTypeData(i, &a, &b); 1376 1377 if (ACPI_SUCCESS(rv)) 1378 sc->sc_sleepstates |= __BIT(i); 1379 } 1380 } 1381 1382 ACPI_STATUS 1383 acpi_enter_sleep_state(struct acpi_softc *sc, int state) 1384 { 1385 ACPI_STATUS rv = AE_OK; 1386 int err; 1387 1388 if (state == sc->sc_sleepstate) 1389 return AE_OK; 1390 1391 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1392 1393 switch (state) { 1394 1395 case ACPI_STATE_S0: 1396 break; 1397 1398 case ACPI_STATE_S1: 1399 case ACPI_STATE_S2: 1400 case ACPI_STATE_S3: 1401 case ACPI_STATE_S4: 1402 1403 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1404 aprint_error_dev(sc->sc_dev, "sleep state " 1405 "S%d is not available\n", state); 1406 break; 1407 } 1408 1409 acpi_wakedev_commit(sc, state); 1410 1411 if (state != ACPI_STATE_S1 && 1412 pmf_system_suspend(PMF_Q_NONE) != true) { 1413 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1414 break; 1415 } 1416 1417 rv = AcpiEnterSleepStatePrep(state); 1418 1419 if (ACPI_FAILURE(rv)) { 1420 aprint_error_dev(sc->sc_dev, "failed to prepare " 1421 "S%d: %s\n", state, AcpiFormatException(rv)); 1422 break; 1423 } 1424 1425 sc->sc_sleepstate = state; 1426 1427 if (state == ACPI_STATE_S1) { 1428 1429 /* Just enter the state. */ 1430 acpi_md_OsDisableInterrupt(); 1431 rv = AcpiEnterSleepState(state); 1432 1433 if (ACPI_FAILURE(rv)) 1434 aprint_error_dev(sc->sc_dev, "failed to " 1435 "enter S1: %s\n", AcpiFormatException(rv)); 1436 1437 (void)AcpiLeaveSleepState(state); 1438 1439 } else { 1440 1441 err = acpi_md_sleep(state); 1442 1443 if (state == ACPI_STATE_S4) 1444 AcpiEnable(); 1445 1446 pmf_system_bus_resume(PMF_Q_NONE); 1447 (void)AcpiLeaveSleepState(state); 1448 pmf_system_resume(PMF_Q_NONE); 1449 } 1450 1451 break; 1452 case ACPI_STATE_S5: 1453 1454 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1455 1456 if (ACPI_FAILURE(rv)) { 1457 aprint_error_dev(sc->sc_dev, "failed to prepare " 1458 "S%d: %s\n", state, AcpiFormatException(rv)); 1459 break; 1460 } 1461 1462 DELAY(1000000); 1463 1464 sc->sc_sleepstate = state; 1465 acpi_md_OsDisableInterrupt(); 1466 1467 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1468 1469 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1470 break; 1471 } 1472 1473 sc->sc_sleepstate = ACPI_STATE_S0; 1474 1475 return rv; 1476 } 1477 1478 /* 1479 * Sysctl. 1480 */ 1481 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1482 { 1483 const struct sysctlnode *mnode, *rnode; 1484 int err; 1485 1486 err = sysctl_createv(clog, 0, NULL, &rnode, 1487 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", 1488 NULL, NULL, 0, NULL, 0, 1489 CTL_HW, CTL_EOL); 1490 1491 if (err != 0) 1492 return; 1493 1494 err = sysctl_createv(clog, 0, &rnode, &rnode, 1495 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1496 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1497 NULL, 0, NULL, 0, 1498 CTL_CREATE, CTL_EOL); 1499 1500 if (err != 0) 1501 return; 1502 1503 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1504 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1505 "root", SYSCTL_DESCR("ACPI root pointer"), 1506 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1507 CTL_CREATE, CTL_EOL); 1508 1509 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1510 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1511 "supported_states", SYSCTL_DESCR("Supported system states"), 1512 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1513 CTL_CREATE, CTL_EOL); 1514 1515 err = sysctl_createv(NULL, 0, NULL, &mnode, 1516 CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep", 1517 NULL, NULL, 0, NULL, 0, 1518 CTL_MACHDEP, CTL_EOL); 1519 1520 if (err == 0) { 1521 1522 (void)sysctl_createv(NULL, 0, &mnode, NULL, 1523 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1524 "sleep_state", SYSCTL_DESCR("System sleep state"), 1525 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1526 CTL_CREATE, CTL_EOL); 1527 } 1528 1529 err = sysctl_createv(clog, 0, &rnode, &rnode, 1530 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1531 "stat", SYSCTL_DESCR("ACPI statistics"), 1532 NULL, 0, NULL, 0, 1533 CTL_CREATE, CTL_EOL); 1534 1535 if (err != 0) 1536 return; 1537 1538 (void)sysctl_createv(clog, 0, &rnode, NULL, 1539 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1540 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1541 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1542 CTL_CREATE, CTL_EOL); 1543 1544 (void)sysctl_createv(clog, 0, &rnode, NULL, 1545 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1546 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1547 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1548 CTL_CREATE, CTL_EOL); 1549 1550 (void)sysctl_createv(clog, 0, &rnode, NULL, 1551 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1552 "fixed", SYSCTL_DESCR("Number of fixed events"), 1553 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1554 CTL_CREATE, CTL_EOL); 1555 1556 (void)sysctl_createv(clog, 0, &rnode, NULL, 1557 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1558 "method", SYSCTL_DESCR("Number of methods executed"), 1559 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1560 CTL_CREATE, CTL_EOL); 1561 1562 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1563 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1564 } 1565 1566 static int 1567 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1568 { 1569 struct sysctlnode node; 1570 uint64_t t; 1571 int err, i; 1572 1573 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1574 t += AcpiFixedEventCount[i]; 1575 1576 node = *rnode; 1577 node.sysctl_data = &t; 1578 1579 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1580 1581 if (err || newp == NULL) 1582 return err; 1583 1584 return 0; 1585 } 1586 1587 static int 1588 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1589 { 1590 struct acpi_softc *sc = acpi_softc; 1591 struct sysctlnode node; 1592 int err, t; 1593 1594 if (acpi_softc == NULL) 1595 return ENOSYS; 1596 1597 node = *rnode; 1598 t = sc->sc_sleepstate; 1599 node.sysctl_data = &t; 1600 1601 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1602 1603 if (err || newp == NULL) 1604 return err; 1605 1606 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1607 return EINVAL; 1608 1609 acpi_enter_sleep_state(sc, t); 1610 1611 return 0; 1612 } 1613 1614 static int 1615 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1616 { 1617 struct acpi_softc *sc = acpi_softc; 1618 struct sysctlnode node; 1619 char t[3 * 6 + 1]; 1620 int err; 1621 1622 if (acpi_softc == NULL) 1623 return ENOSYS; 1624 1625 (void)memset(t, '\0', sizeof(t)); 1626 1627 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1628 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1629 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1630 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1631 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1632 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1633 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1634 1635 node = *rnode; 1636 node.sysctl_data = &t; 1637 1638 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1639 1640 if (err || newp == NULL) 1641 return err; 1642 1643 return 0; 1644 } 1645 1646 /* 1647 * Miscellaneous. 1648 */ 1649 ACPI_PHYSICAL_ADDRESS 1650 acpi_OsGetRootPointer(void) 1651 { 1652 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1653 1654 /* 1655 * We let MD code handle this since there are multiple ways to do it: 1656 * 1657 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1658 * 1659 * IA-64: Use the EFI. 1660 */ 1661 PhysicalAddress = acpi_md_OsGetRootPointer(); 1662 1663 if (acpi_root_pointer == 0) 1664 acpi_root_pointer = PhysicalAddress; 1665 1666 return PhysicalAddress; 1667 } 1668 1669 static ACPI_TABLE_HEADER * 1670 acpi_map_rsdt(void) 1671 { 1672 ACPI_PHYSICAL_ADDRESS paddr; 1673 ACPI_TABLE_RSDP *rsdp; 1674 1675 paddr = AcpiOsGetRootPointer(); 1676 1677 if (paddr == 0) 1678 return NULL; 1679 1680 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1681 1682 if (rsdp == NULL) 1683 return NULL; 1684 1685 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1686 paddr = rsdp->XsdtPhysicalAddress; 1687 else 1688 paddr = rsdp->RsdtPhysicalAddress; 1689 1690 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1691 1692 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1693 } 1694 1695 static void 1696 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1697 { 1698 1699 if (rsdt == NULL) 1700 return; 1701 1702 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1703 } 1704
Indexes created Wed Oct 01 19:09:53 GMT 2025