acpi.c revision 1.219
1 /* $NetBSD: acpi.c,v 1.219 2010/09/06 15:54:26 jmcneill 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 (c) 2003 Wasabi Systems, Inc. 34 * All rights reserved. 35 * 36 * Written by Frank van der Linden 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 /* 68 * Copyright 2001, 2003 Wasabi Systems, Inc. 69 * All rights reserved. 70 * 71 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 72 * 73 * Redistribution and use in source and binary forms, with or without 74 * modification, are permitted provided that the following conditions 75 * are met: 76 * 1. Redistributions of source code must retain the above copyright 77 * notice, this list of conditions and the following disclaimer. 78 * 2. Redistributions in binary form must reproduce the above copyright 79 * notice, this list of conditions and the following disclaimer in the 80 * documentation and/or other materials provided with the distribution. 81 * 3. All advertising materials mentioning features or use of this software 82 * must display the following acknowledgement: 83 * This product includes software developed for the NetBSD Project by 84 * Wasabi Systems, Inc. 85 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 86 * or promote products derived from this software without specific prior 87 * written permission. 88 * 89 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 90 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 91 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 92 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 93 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 94 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 95 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 96 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 97 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 98 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 99 * POSSIBILITY OF SUCH DAMAGE. 100 */ 101 102 #include <sys/cdefs.h> 103 __KERNEL_RCSID(0, "$NetBSD: acpi.c,v 1.219 2010/09/06 15:54:26 jmcneill Exp $"); 104 105 #include "opt_acpi.h" 106 #include "opt_pcifixup.h" 107 108 #include <sys/param.h> 109 #include <sys/device.h> 110 #include <sys/kernel.h> 111 #include <sys/malloc.h> 112 #include <sys/module.h> 113 #include <sys/mutex.h> 114 #include <sys/sysctl.h> 115 #include <sys/systm.h> 116 #include <sys/timetc.h> 117 118 #include <dev/acpi/acpireg.h> 119 #include <dev/acpi/acpivar.h> 120 #include <dev/acpi/acpi_osd.h> 121 #include <dev/acpi/acpi_pci.h> 122 #include <dev/acpi/acpi_power.h> 123 #include <dev/acpi/acpi_timer.h> 124 #include <dev/acpi/acpi_wakedev.h> 125 126 #define _COMPONENT ACPI_BUS_COMPONENT 127 ACPI_MODULE_NAME ("acpi") 128 129 #if defined(ACPI_PCI_FIXUP) 130 #error The option ACPI_PCI_FIXUP has been obsoleted by PCI_INTR_FIXUP_DISABLED. Please adjust your kernel configuration file. 131 #endif 132 133 #ifdef PCI_INTR_FIXUP_DISABLED 134 #include <dev/pci/pcidevs.h> 135 #endif 136 137 MALLOC_DECLARE(M_ACPI); 138 139 #include <machine/acpi_machdep.h> 140 141 #ifdef ACPI_DEBUGGER 142 #define ACPI_DBGR_INIT 0x01 143 #define ACPI_DBGR_TABLES 0x02 144 #define ACPI_DBGR_ENABLE 0x04 145 #define ACPI_DBGR_PROBE 0x08 146 #define ACPI_DBGR_RUNNING 0x10 147 148 static int acpi_dbgr = 0x00; 149 #endif 150 151 /* 152 * This is a flag we set when the ACPI subsystem is active. Machine 153 * dependent code may wish to skip other steps (such as attaching 154 * subsystems that ACPI supercedes) when ACPI is active. 155 */ 156 int acpi_active; 157 158 int acpi_force_load = 0; 159 int acpi_suspended = 0; 160 int acpi_verbose_loaded = 0; 161 162 struct acpi_softc *acpi_softc; 163 static uint64_t acpi_root_pointer; 164 extern kmutex_t acpi_interrupt_list_mtx; 165 extern struct cfdriver acpi_cd; 166 static ACPI_HANDLE acpi_scopes[4]; 167 ACPI_TABLE_HEADER *madt_header; 168 169 /* 170 * This structure provides a context for the ACPI 171 * namespace walk performed in acpi_build_tree(). 172 */ 173 struct acpi_walkcontext { 174 struct acpi_softc *aw_sc; 175 struct acpi_devnode *aw_parent; 176 }; 177 178 /* 179 * Ignored HIDs. 180 */ 181 static const char * const acpi_ignored_ids[] = { 182 #if defined(i386) || defined(x86_64) 183 "PNP0000", /* AT interrupt controller is handled internally */ 184 "PNP0200", /* AT DMA controller is handled internally */ 185 "PNP0A??", /* PCI Busses are handled internally */ 186 "PNP0B00", /* AT RTC is handled internally */ 187 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 188 #endif 189 #if defined(x86_64) 190 "PNP0C04", /* FPU is handled internally */ 191 #endif 192 NULL 193 }; 194 195 static int acpi_match(device_t, cfdata_t, void *); 196 static int acpi_submatch(device_t, cfdata_t, const int *, void *); 197 static void acpi_attach(device_t, device_t, void *); 198 static int acpi_detach(device_t, int); 199 static void acpi_childdet(device_t, device_t); 200 static bool acpi_suspend(device_t, const pmf_qual_t *); 201 static bool acpi_resume(device_t, const pmf_qual_t *); 202 203 static void acpi_build_tree(struct acpi_softc *); 204 static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, 205 void *, void **); 206 static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t, 207 void *, void **); 208 209 #ifdef ACPI_ACTIVATE_DEV 210 static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **); 211 static ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE); 212 #endif 213 214 static int acpi_rescan(device_t, const char *, const int *); 215 static void acpi_rescan_nodes(struct acpi_softc *); 216 static void acpi_rescan_capabilities(struct acpi_softc *); 217 static int acpi_print(void *aux, const char *); 218 219 static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); 220 221 static void acpi_register_fixed_button(struct acpi_softc *, int); 222 static void acpi_deregister_fixed_button(struct acpi_softc *, int); 223 static uint32_t acpi_fixed_button_handler(void *); 224 static void acpi_fixed_button_pressed(void *); 225 226 static void acpi_sleep_init(struct acpi_softc *); 227 228 static int sysctl_hw_acpi_fixedstats(SYSCTLFN_PROTO); 229 static int sysctl_hw_acpi_sleepstate(SYSCTLFN_PROTO); 230 static int sysctl_hw_acpi_sleepstates(SYSCTLFN_PROTO); 231 232 static bool acpi_is_scope(struct acpi_devnode *); 233 static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 234 static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 235 236 void acpi_print_verbose_stub(struct acpi_softc *); 237 void acpi_print_dev_stub(const char *); 238 239 void (*acpi_print_verbose)(struct acpi_softc *) = acpi_print_verbose_stub; 240 void (*acpi_print_dev)(const char *) = acpi_print_dev_stub; 241 242 CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 243 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 244 245 /* 246 * Probe for ACPI support. 247 * 248 * This is called by the machine-dependent ACPI front-end. 249 * Note: this is not an autoconfiguration interface function. 250 */ 251 int 252 acpi_probe(void) 253 { 254 ACPI_TABLE_HEADER *rsdt; 255 const char *func; 256 static int once; 257 bool initialized; 258 ACPI_STATUS rv; 259 260 if (once != 0) 261 panic("%s: already probed", __func__); 262 263 once = 1; 264 func = NULL; 265 initialized = false; 266 267 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 268 269 /* 270 * Start up ACPICA. 271 */ 272 #ifdef ACPI_DEBUGGER 273 if (acpi_dbgr & ACPI_DBGR_INIT) 274 acpi_osd_debugger(); 275 #endif 276 277 CTASSERT(TRUE == true); 278 CTASSERT(FALSE == false); 279 280 AcpiGbl_AllMethodsSerialized = false; 281 AcpiGbl_EnableInterpreterSlack = true; 282 283 rv = AcpiInitializeSubsystem(); 284 285 if (ACPI_SUCCESS(rv)) 286 initialized = true; 287 else { 288 func = "AcpiInitializeSubsystem()"; 289 goto fail; 290 } 291 292 /* 293 * Allocate space for RSDT/XSDT and DSDT, 294 * but allow resizing if more tables exist. 295 */ 296 rv = AcpiInitializeTables(NULL, 2, true); 297 298 if (ACPI_FAILURE(rv)) { 299 func = "AcpiInitializeTables()"; 300 goto fail; 301 } 302 303 #ifdef ACPI_DEBUGGER 304 if (acpi_dbgr & ACPI_DBGR_TABLES) 305 acpi_osd_debugger(); 306 #endif 307 308 rv = AcpiLoadTables(); 309 310 if (ACPI_FAILURE(rv)) { 311 func = "AcpiLoadTables()"; 312 goto fail; 313 } 314 315 rsdt = acpi_map_rsdt(); 316 317 if (rsdt == NULL) { 318 func = "acpi_map_rsdt()"; 319 rv = AE_ERROR; 320 goto fail; 321 } 322 323 if (acpi_force_load == 0 && (acpi_find_quirks() & ACPI_QUIRK_BROKEN)) { 324 aprint_normal("ACPI: BIOS is listed as broken:\n"); 325 aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 326 "AslId <%4.4s,%08x>\n", 327 rsdt->OemId, rsdt->OemTableId, 328 rsdt->OemRevision, 329 rsdt->AslCompilerId, 330 rsdt->AslCompilerRevision); 331 aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n"); 332 acpi_unmap_rsdt(rsdt); 333 AcpiTerminate(); 334 return 0; 335 } 336 if (acpi_force_load == 0 && (acpi_find_quirks() & ACPI_QUIRK_OLDBIOS)) { 337 aprint_normal("ACPI: BIOS is too old (%s). Set acpi_force_load to use.\n", 338 pmf_get_platform("firmware-date")); 339 acpi_unmap_rsdt(rsdt); 340 AcpiTerminate(); 341 return 0; 342 } 343 344 acpi_unmap_rsdt(rsdt); 345 346 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 347 348 if (ACPI_FAILURE(rv)) { 349 func = "AcpiEnableSubsystem()"; 350 goto fail; 351 } 352 353 /* 354 * Looks like we have ACPI! 355 */ 356 return 1; 357 358 fail: 359 KASSERT(rv != AE_OK); 360 KASSERT(func != NULL); 361 362 aprint_error("%s: failed to probe ACPI: %s\n", 363 func, AcpiFormatException(rv)); 364 365 if (initialized != false) 366 (void)AcpiTerminate(); 367 368 return 0; 369 } 370 371 void 372 acpi_disable(void) 373 { 374 375 if (AcpiGbl_FADT.SmiCommand != 0) 376 AcpiDisable(); 377 } 378 379 int 380 acpi_check(device_t parent, const char *ifattr) 381 { 382 return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); 383 } 384 385 /* 386 * Autoconfiguration. 387 */ 388 static int 389 acpi_match(device_t parent, cfdata_t match, void *aux) 390 { 391 /* 392 * XXX: Nada; MD code has called acpi_probe(). 393 */ 394 return 1; 395 } 396 397 static int 398 acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 399 { 400 struct cfattach *ca; 401 402 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 403 404 return (ca == &acpi_ca); 405 } 406 407 static void 408 acpi_attach(device_t parent, device_t self, void *aux) 409 { 410 struct acpi_softc *sc = device_private(self); 411 struct acpibus_attach_args *aa = aux; 412 ACPI_TABLE_HEADER *rsdt; 413 ACPI_STATUS rv; 414 415 aprint_naive("\n"); 416 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 417 418 if (acpi_softc != NULL) 419 panic("%s: already attached", __func__); 420 421 rsdt = acpi_map_rsdt(); 422 423 if (rsdt == NULL) 424 aprint_error_dev(self, "X/RSDT: Not found\n"); 425 else { 426 aprint_verbose_dev(self, 427 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 428 rsdt->OemId, rsdt->OemTableId, 429 rsdt->OemRevision, 430 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 431 } 432 433 acpi_unmap_rsdt(rsdt); 434 435 sc->sc_dev = self; 436 sc->sc_root = NULL; 437 438 sc->sc_sleepstate = ACPI_STATE_S0; 439 sc->sc_quirks = acpi_find_quirks(); 440 441 sysmon_power_settype("acpi"); 442 443 sc->sc_iot = aa->aa_iot; 444 sc->sc_memt = aa->aa_memt; 445 sc->sc_pc = aa->aa_pc; 446 sc->sc_pciflags = aa->aa_pciflags; 447 sc->sc_ic = aa->aa_ic; 448 449 SIMPLEQ_INIT(&sc->ad_head); 450 451 acpi_softc = sc; 452 453 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) 454 aprint_error_dev(self, "couldn't establish power handler\n"); 455 456 /* 457 * Bring ACPI on-line. 458 */ 459 #ifdef ACPI_DEBUGGER 460 if (acpi_dbgr & ACPI_DBGR_ENABLE) 461 acpi_osd_debugger(); 462 #endif 463 464 #define ACPI_ENABLE_PHASE1 \ 465 (ACPI_NO_HANDLER_INIT | ACPI_NO_EVENT_INIT) 466 #define ACPI_ENABLE_PHASE2 \ 467 (ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE | \ 468 ACPI_NO_ADDRESS_SPACE_INIT) 469 470 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE1); 471 472 if (ACPI_FAILURE(rv)) 473 goto fail; 474 475 acpi_md_callback(); 476 477 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE2); 478 479 if (ACPI_FAILURE(rv)) 480 goto fail; 481 482 /* 483 * Early EC handler initialization if ECDT table is available. 484 */ 485 config_found_ia(self, "acpiecdtbus", aa, NULL); 486 487 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 488 489 if (ACPI_FAILURE(rv)) 490 goto fail; 491 492 /* 493 * Install global notify handlers. 494 */ 495 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 496 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 497 498 if (ACPI_FAILURE(rv)) 499 goto fail; 500 501 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 502 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 503 504 if (ACPI_FAILURE(rv)) 505 goto fail; 506 507 acpi_active = 1; 508 509 /* Show SCI interrupt. */ 510 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 511 AcpiGbl_FADT.SciInterrupt); 512 513 /* 514 * Install fixed-event handlers. 515 */ 516 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 517 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 518 519 acpitimer_init(sc); 520 521 #ifdef ACPI_DEBUGGER 522 if (acpi_dbgr & ACPI_DBGR_PROBE) 523 acpi_osd_debugger(); 524 #endif 525 526 /* 527 * Scan the namespace and build our device tree. 528 */ 529 acpi_build_tree(sc); 530 acpi_sleep_init(sc); 531 532 #ifdef ACPI_DEBUGGER 533 if (acpi_dbgr & ACPI_DBGR_RUNNING) 534 acpi_osd_debugger(); 535 #endif 536 537 #ifdef ACPI_DEBUG 538 acpi_debug_init(); 539 #endif 540 541 /* 542 * Print debug information. 543 */ 544 acpi_print_verbose(sc); 545 546 return; 547 548 fail: 549 aprint_error("%s: failed to initialize ACPI: %s\n", 550 __func__, AcpiFormatException(rv)); 551 } 552 553 /* 554 * XXX: This is incomplete. 555 */ 556 static int 557 acpi_detach(device_t self, int flags) 558 { 559 struct acpi_softc *sc = device_private(self); 560 ACPI_STATUS rv; 561 int rc; 562 563 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 564 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 565 566 if (ACPI_FAILURE(rv)) 567 return EBUSY; 568 569 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 570 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 571 572 if (ACPI_FAILURE(rv)) 573 return EBUSY; 574 575 if ((rc = config_detach_children(self, flags)) != 0) 576 return rc; 577 578 if ((rc = acpitimer_detach()) != 0) 579 return rc; 580 581 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 582 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 583 584 pmf_device_deregister(self); 585 586 acpi_softc = NULL; 587 588 return 0; 589 } 590 591 /* 592 * XXX: Need to reclaim any resources? Yes. 593 */ 594 static void 595 acpi_childdet(device_t self, device_t child) 596 { 597 struct acpi_softc *sc = device_private(self); 598 struct acpi_devnode *ad; 599 600 if (sc->sc_apmbus == child) 601 sc->sc_apmbus = NULL; 602 603 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 604 605 if (ad->ad_device == child) 606 ad->ad_device = NULL; 607 } 608 } 609 610 static bool 611 acpi_suspend(device_t dv, const pmf_qual_t *qual) 612 { 613 614 acpi_suspended = 1; 615 616 return true; 617 } 618 619 static bool 620 acpi_resume(device_t dv, const pmf_qual_t *qual) 621 { 622 623 acpi_suspended = 0; 624 625 return true; 626 } 627 628 /* 629 * Namespace scan. 630 */ 631 static void 632 acpi_build_tree(struct acpi_softc *sc) 633 { 634 struct acpi_walkcontext awc; 635 636 /* 637 * Get the root scope handles. 638 */ 639 KASSERT(__arraycount(acpi_scopes) == 4); 640 641 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 642 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 643 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 644 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 645 646 /* 647 * Make the root node. 648 */ 649 awc.aw_sc = sc; 650 awc.aw_parent = NULL; 651 652 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 653 654 KASSERT(sc->sc_root == NULL); 655 KASSERT(awc.aw_parent != NULL); 656 657 sc->sc_root = awc.aw_parent; 658 659 /* 660 * Build the internal namespace. 661 */ 662 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 663 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 664 665 /* 666 * Scan the internal namespace. 667 */ 668 (void)acpi_rescan(sc->sc_dev, NULL, NULL); 669 670 acpi_rescan_capabilities(sc); 671 672 (void)acpi_pcidev_scan(sc->sc_root); 673 } 674 675 static ACPI_STATUS 676 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 677 void *context, void **status) 678 { 679 struct acpi_walkcontext *awc = context; 680 struct acpi_softc *sc = awc->aw_sc; 681 struct acpi_devnode *ad; 682 ACPI_DEVICE_INFO *devinfo; 683 ACPI_OBJECT_TYPE type; 684 ACPI_NAME_UNION *anu; 685 ACPI_STATUS rv; 686 int clear, i; 687 688 rv = AcpiGetObjectInfo(handle, &devinfo); 689 690 if (ACPI_FAILURE(rv)) 691 return AE_OK; /* Do not terminate the walk. */ 692 693 type = devinfo->Type; 694 695 switch (type) { 696 697 case ACPI_TYPE_DEVICE: 698 699 #ifdef ACPI_ACTIVATE_DEV 700 acpi_activate_device(handle, &devinfo); 701 #endif 702 703 case ACPI_TYPE_PROCESSOR: 704 case ACPI_TYPE_THERMAL: 705 case ACPI_TYPE_POWER: 706 707 ad = malloc(sizeof(*ad), M_ACPI, M_NOWAIT | M_ZERO); 708 709 if (ad == NULL) 710 return AE_NO_MEMORY; 711 712 ad->ad_device = NULL; 713 ad->ad_notify = NULL; 714 ad->ad_pciinfo = NULL; 715 716 ad->ad_type = type; 717 ad->ad_handle = handle; 718 ad->ad_devinfo = devinfo; 719 720 ad->ad_root = sc->sc_dev; 721 ad->ad_parent = awc->aw_parent; 722 723 anu = (ACPI_NAME_UNION *)&devinfo->Name; 724 ad->ad_name[4] = '\0'; 725 726 for (i = 3, clear = 0; i >= 0; i--) { 727 728 if (clear == 0 && anu->Ascii[i] == '_') 729 ad->ad_name[i] = '\0'; 730 else { 731 ad->ad_name[i] = anu->Ascii[i]; 732 clear = 1; 733 } 734 } 735 736 if (ad->ad_name[0] == '\0') 737 ad->ad_name[0] = '_'; 738 739 SIMPLEQ_INIT(&ad->ad_child_head); 740 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 741 742 acpi_set_node(ad); 743 744 if (ad->ad_parent != NULL) { 745 746 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 747 ad, ad_child_list); 748 } 749 750 awc->aw_parent = ad; 751 } 752 753 return AE_OK; 754 } 755 756 static ACPI_STATUS 757 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 758 void *context, void **status) 759 { 760 struct acpi_walkcontext *awc = context; 761 762 KASSERT(awc != NULL); 763 KASSERT(awc->aw_parent != NULL); 764 765 if (handle == awc->aw_parent->ad_handle) 766 awc->aw_parent = awc->aw_parent->ad_parent; 767 768 return AE_OK; 769 } 770 771 #ifdef ACPI_ACTIVATE_DEV 772 static void 773 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 774 { 775 static const int valid = ACPI_VALID_STA | ACPI_VALID_HID; 776 ACPI_DEVICE_INFO *newdi; 777 ACPI_STATUS rv; 778 uint32_t old; 779 780 /* 781 * If the device is valid and present, 782 * but not enabled, try to activate it. 783 */ 784 if (((*di)->Valid & valid) != valid) 785 return; 786 787 old = (*di)->CurrentStatus; 788 789 if ((old & (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED)) != 790 ACPI_STA_DEVICE_PRESENT) 791 return; 792 793 rv = acpi_allocate_resources(handle); 794 795 if (ACPI_FAILURE(rv)) 796 goto fail; 797 798 rv = AcpiGetObjectInfo(handle, &newdi); 799 800 if (ACPI_FAILURE(rv)) 801 goto fail; 802 803 ACPI_FREE(*di); 804 *di = newdi; 805 806 aprint_verbose_dev(acpi_softc->sc_dev, 807 "%s activated, STA 0x%08X -> STA 0x%08X\n", 808 (*di)->HardwareId.String, old, (*di)->CurrentStatus); 809 810 return; 811 812 fail: 813 aprint_error_dev(acpi_softc->sc_dev, "failed to " 814 "activate %s\n", (*di)->HardwareId.String); 815 } 816 817 /* 818 * XXX: This very incomplete. 819 */ 820 ACPI_STATUS 821 acpi_allocate_resources(ACPI_HANDLE handle) 822 { 823 ACPI_BUFFER bufp, bufc, bufn; 824 ACPI_RESOURCE *resp, *resc, *resn; 825 ACPI_RESOURCE_IRQ *irq; 826 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 827 ACPI_STATUS rv; 828 uint delta; 829 830 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 831 if (ACPI_FAILURE(rv)) 832 goto out; 833 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 834 if (ACPI_FAILURE(rv)) { 835 goto out1; 836 } 837 838 bufn.Length = 1000; 839 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 840 resp = bufp.Pointer; 841 resc = bufc.Pointer; 842 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 843 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 844 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 845 resp = ACPI_NEXT_RESOURCE(resp); 846 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 847 break; 848 /* Found identical Id */ 849 resn->Type = resc->Type; 850 switch (resc->Type) { 851 case ACPI_RESOURCE_TYPE_IRQ: 852 memcpy(&resn->Data, &resp->Data, 853 sizeof(ACPI_RESOURCE_IRQ)); 854 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 855 irq->Interrupts[0] = 856 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 857 Interrupts[irq->InterruptCount-1]; 858 irq->InterruptCount = 1; 859 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 860 break; 861 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 862 memcpy(&resn->Data, &resp->Data, 863 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 864 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 865 #if 0 866 /* 867 * XXX: Not duplicating the interrupt logic above 868 * because its not clear what it accomplishes. 869 */ 870 xirq->Interrupts[0] = 871 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 872 Interrupts[irq->NumberOfInterrupts-1]; 873 xirq->NumberOfInterrupts = 1; 874 #endif 875 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 876 break; 877 case ACPI_RESOURCE_TYPE_IO: 878 memcpy(&resn->Data, &resp->Data, 879 sizeof(ACPI_RESOURCE_IO)); 880 resn->Length = resp->Length; 881 break; 882 default: 883 aprint_error_dev(acpi_softc->sc_dev, 884 "%s: invalid type %u\n", __func__, resc->Type); 885 rv = AE_BAD_DATA; 886 goto out2; 887 } 888 resc = ACPI_NEXT_RESOURCE(resc); 889 resn = ACPI_NEXT_RESOURCE(resn); 890 resp = ACPI_NEXT_RESOURCE(resp); 891 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 892 if (delta >= 893 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 894 bufn.Length *= 2; 895 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 896 M_ACPI, M_WAITOK); 897 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 898 delta); 899 } 900 } 901 902 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 903 aprint_error_dev(acpi_softc->sc_dev, 904 "%s: resc not exhausted\n", __func__); 905 rv = AE_BAD_DATA; 906 goto out3; 907 } 908 909 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 910 rv = AcpiSetCurrentResources(handle, &bufn); 911 912 if (ACPI_FAILURE(rv)) 913 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 914 "resources: %s\n", __func__, AcpiFormatException(rv)); 915 916 out3: 917 free(bufn.Pointer, M_ACPI); 918 out2: 919 ACPI_FREE(bufc.Pointer); 920 out1: 921 ACPI_FREE(bufp.Pointer); 922 out: 923 return rv; 924 } 925 #endif /* ACPI_ACTIVATE_DEV */ 926 927 /* 928 * Device attachment. 929 */ 930 static int 931 acpi_rescan(device_t self, const char *ifattr, const int *locators) 932 { 933 struct acpi_softc *sc = device_private(self); 934 935 if (ifattr_match(ifattr, "acpinodebus")) 936 acpi_rescan_nodes(sc); 937 938 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 939 sc->sc_apmbus = config_found_ia(sc->sc_dev, 940 "acpiapmbus", NULL, NULL); 941 942 return 0; 943 } 944 945 static void 946 acpi_rescan_nodes(struct acpi_softc *sc) 947 { 948 struct acpi_attach_args aa; 949 struct acpi_devnode *ad; 950 ACPI_DEVICE_INFO *di; 951 952 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 953 954 if (ad->ad_device != NULL) 955 continue; 956 957 /* 958 * There is a bug in ACPICA: it defines the type 959 * of the scopes incorrectly for its own reasons. 960 */ 961 if (acpi_is_scope(ad) != false) 962 continue; 963 964 di = ad->ad_devinfo; 965 966 /* 967 * We only attach devices which are present, enabled, and 968 * functioning properly. However, if a device is enabled, 969 * it is decoding resources and we should claim these, 970 * if possible. This requires changes to bus_space(9). 971 * Note: there is a possible race condition, because _STA 972 * may have changed since di->CurrentStatus was set. 973 */ 974 if (di->Type == ACPI_TYPE_DEVICE) { 975 976 if ((di->Valid & ACPI_VALID_STA) != 0 && 977 (di->CurrentStatus & ACPI_STA_OK) != ACPI_STA_OK) 978 continue; 979 } 980 981 /* 982 * The same problem as above. As for example 983 * thermal zones and power resources do not 984 * have a valid HID, only evaluate devices. 985 */ 986 if (di->Type == ACPI_TYPE_DEVICE && 987 (di->Valid & ACPI_VALID_HID) == 0) 988 continue; 989 990 /* 991 * Handled internally. 992 */ 993 if (di->Type == ACPI_TYPE_POWER) 994 continue; 995 996 /* 997 * Skip ignored HIDs. 998 */ 999 if (acpi_match_hid(di, acpi_ignored_ids)) 1000 continue; 1001 1002 aa.aa_node = ad; 1003 aa.aa_iot = sc->sc_iot; 1004 aa.aa_memt = sc->sc_memt; 1005 aa.aa_pc = sc->sc_pc; 1006 aa.aa_pciflags = sc->sc_pciflags; 1007 aa.aa_ic = sc->sc_ic; 1008 1009 ad->ad_device = config_found_ia(sc->sc_dev, 1010 "acpinodebus", &aa, acpi_print); 1011 } 1012 } 1013 1014 static void 1015 acpi_rescan_capabilities(struct acpi_softc *sc) 1016 { 1017 struct acpi_devnode *ad; 1018 ACPI_HANDLE tmp; 1019 ACPI_STATUS rv; 1020 1021 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1022 1023 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 1024 continue; 1025 1026 /* 1027 * Scan power resource capabilities. 1028 * 1029 * If any power states are supported, 1030 * at least _PR0 and _PR3 must be present. 1031 */ 1032 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 1033 1034 if (ACPI_SUCCESS(rv)) { 1035 ad->ad_flags |= ACPI_DEVICE_POWER; 1036 acpi_power_add(ad); 1037 } 1038 1039 /* 1040 * Scan wake-up capabilities. 1041 */ 1042 rv = AcpiGetHandle(ad->ad_handle, "_PRW", &tmp); 1043 1044 if (ACPI_SUCCESS(rv)) { 1045 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 1046 acpi_wakedev_add(ad); 1047 } 1048 } 1049 } 1050 1051 static int 1052 acpi_print(void *aux, const char *pnp) 1053 { 1054 struct acpi_attach_args *aa = aux; 1055 ACPI_STATUS rv; 1056 1057 if (pnp) { 1058 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1059 char *pnpstr = 1060 aa->aa_node->ad_devinfo->HardwareId.String; 1061 ACPI_BUFFER buf; 1062 1063 aprint_normal("%s (%s) ", aa->aa_node->ad_name, 1064 pnpstr); 1065 1066 rv = acpi_eval_struct(aa->aa_node->ad_handle, 1067 "_STR", &buf); 1068 if (ACPI_SUCCESS(rv)) { 1069 ACPI_OBJECT *obj = buf.Pointer; 1070 switch (obj->Type) { 1071 case ACPI_TYPE_STRING: 1072 aprint_normal("[%s] ", obj->String.Pointer); 1073 break; 1074 case ACPI_TYPE_BUFFER: 1075 aprint_normal("buffer %p ", obj->Buffer.Pointer); 1076 break; 1077 default: 1078 aprint_normal("type %u ",obj->Type); 1079 break; 1080 } 1081 ACPI_FREE(buf.Pointer); 1082 } 1083 else 1084 acpi_print_dev(pnpstr); 1085 1086 aprint_normal("at %s", pnp); 1087 } else if (aa->aa_node->ad_devinfo->Type != ACPI_TYPE_DEVICE) { 1088 aprint_normal("%s (ACPI Object Type '%s' " 1089 "[0x%02x]) ", aa->aa_node->ad_name, 1090 AcpiUtGetTypeName(aa->aa_node->ad_devinfo->Type), 1091 aa->aa_node->ad_devinfo->Type); 1092 aprint_normal("at %s", pnp); 1093 } else 1094 return 0; 1095 } else { 1096 aprint_normal(" (%s", aa->aa_node->ad_name); 1097 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1098 aprint_normal(", %s", aa->aa_node->ad_devinfo->HardwareId.String); 1099 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_UID) { 1100 const char *uid; 1101 1102 uid = aa->aa_node->ad_devinfo->UniqueId.String; 1103 if (uid[0] == '\0') 1104 uid = "<null>"; 1105 aprint_normal("-%s", uid); 1106 } 1107 } 1108 aprint_normal(")"); 1109 } 1110 1111 return UNCONF; 1112 } 1113 1114 /* 1115 * Notify. 1116 */ 1117 static void 1118 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1119 { 1120 struct acpi_softc *sc = acpi_softc; 1121 struct acpi_devnode *ad; 1122 1123 KASSERT(sc != NULL); 1124 KASSERT(aux == NULL); 1125 KASSERT(acpi_active != 0); 1126 1127 if (acpi_suspended != 0) 1128 return; 1129 1130 /* 1131 * System: 0x00 - 0x7F. 1132 * Device: 0x80 - 0xFF. 1133 */ 1134 switch (event) { 1135 1136 case ACPI_NOTIFY_BUS_CHECK: 1137 case ACPI_NOTIFY_DEVICE_CHECK: 1138 case ACPI_NOTIFY_DEVICE_WAKE: 1139 case ACPI_NOTIFY_EJECT_REQUEST: 1140 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1141 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1142 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1143 case ACPI_NOTIFY_POWER_FAULT: 1144 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1145 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1146 case ACPI_NOTIFY_RESERVED: 1147 case ACPI_NOTIFY_LOCALITY_UPDATE: 1148 break; 1149 } 1150 1151 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1152 "%s (%p)\n", event, acpi_name(handle), handle)); 1153 1154 /* 1155 * We deliver notifications only to drivers 1156 * that have been succesfully attached and 1157 * that have registered a handler with us. 1158 * The opaque pointer is always the device_t. 1159 */ 1160 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1161 1162 if (ad->ad_device == NULL) 1163 continue; 1164 1165 if (ad->ad_notify == NULL) 1166 continue; 1167 1168 if (ad->ad_handle != handle) 1169 continue; 1170 1171 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1172 1173 return; 1174 } 1175 1176 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1177 "for %s (%p)\n", event, acpi_name(handle), handle); 1178 } 1179 1180 bool 1181 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1182 { 1183 struct acpi_softc *sc = acpi_softc; 1184 1185 KASSERT(sc != NULL); 1186 KASSERT(acpi_active != 0); 1187 1188 if (acpi_suspended != 0) 1189 goto fail; 1190 1191 if (ad == NULL || notify == NULL) 1192 goto fail; 1193 1194 ad->ad_notify = notify; 1195 1196 return true; 1197 1198 fail: 1199 aprint_error_dev(sc->sc_dev, "failed to register notify " 1200 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1201 1202 return false; 1203 } 1204 1205 void 1206 acpi_deregister_notify(struct acpi_devnode *ad) 1207 { 1208 1209 ad->ad_notify = NULL; 1210 } 1211 1212 /* 1213 * Fixed buttons. 1214 */ 1215 static void 1216 acpi_register_fixed_button(struct acpi_softc *sc, int event) 1217 { 1218 struct sysmon_pswitch *smpsw; 1219 ACPI_STATUS rv; 1220 int type; 1221 1222 switch (event) { 1223 1224 case ACPI_EVENT_POWER_BUTTON: 1225 1226 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1227 return; 1228 1229 type = PSWITCH_TYPE_POWER; 1230 smpsw = &sc->sc_smpsw_power; 1231 break; 1232 1233 case ACPI_EVENT_SLEEP_BUTTON: 1234 1235 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1236 return; 1237 1238 type = PSWITCH_TYPE_SLEEP; 1239 smpsw = &sc->sc_smpsw_sleep; 1240 break; 1241 1242 default: 1243 rv = AE_TYPE; 1244 goto fail; 1245 } 1246 1247 smpsw->smpsw_type = type; 1248 smpsw->smpsw_name = device_xname(sc->sc_dev); 1249 1250 if (sysmon_pswitch_register(smpsw) != 0) { 1251 rv = AE_ERROR; 1252 goto fail; 1253 } 1254 1255 rv = AcpiInstallFixedEventHandler(event, 1256 acpi_fixed_button_handler, smpsw); 1257 1258 if (ACPI_FAILURE(rv)) { 1259 sysmon_pswitch_unregister(smpsw); 1260 goto fail; 1261 } 1262 1263 aprint_debug_dev(sc->sc_dev, "fixed %s button present\n", 1264 (type != ACPI_EVENT_SLEEP_BUTTON) ? "power" : "sleep"); 1265 1266 return; 1267 1268 fail: 1269 aprint_error_dev(sc->sc_dev, "failed to register " 1270 "fixed event: %s\n", AcpiFormatException(rv)); 1271 } 1272 1273 static void 1274 acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1275 { 1276 struct sysmon_pswitch *smpsw; 1277 ACPI_STATUS rv; 1278 1279 switch (event) { 1280 1281 case ACPI_EVENT_POWER_BUTTON: 1282 smpsw = &sc->sc_smpsw_power; 1283 1284 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1285 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1286 return; 1287 } 1288 1289 break; 1290 1291 case ACPI_EVENT_SLEEP_BUTTON: 1292 smpsw = &sc->sc_smpsw_sleep; 1293 1294 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1295 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1296 return; 1297 } 1298 1299 break; 1300 1301 default: 1302 rv = AE_TYPE; 1303 goto fail; 1304 } 1305 1306 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1307 1308 if (ACPI_SUCCESS(rv)) { 1309 sysmon_pswitch_unregister(smpsw); 1310 return; 1311 } 1312 1313 fail: 1314 aprint_error_dev(sc->sc_dev, "failed to deregister " 1315 "fixed event: %s\n", AcpiFormatException(rv)); 1316 } 1317 1318 static uint32_t 1319 acpi_fixed_button_handler(void *context) 1320 { 1321 static const int handler = OSL_NOTIFY_HANDLER; 1322 struct sysmon_pswitch *smpsw = context; 1323 1324 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1325 1326 return ACPI_INTERRUPT_HANDLED; 1327 } 1328 1329 static void 1330 acpi_fixed_button_pressed(void *context) 1331 { 1332 struct sysmon_pswitch *smpsw = context; 1333 1334 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1335 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1336 "power" : "sleep")); 1337 1338 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1339 } 1340 1341 /* 1342 * Sleep. 1343 */ 1344 static void 1345 acpi_sleep_init(struct acpi_softc *sc) 1346 { 1347 uint8_t a, b, i; 1348 ACPI_STATUS rv; 1349 1350 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1351 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1352 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1353 1354 /* 1355 * Evaluate supported sleep states. 1356 */ 1357 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1358 1359 rv = AcpiGetSleepTypeData(i, &a, &b); 1360 1361 if (ACPI_SUCCESS(rv)) 1362 sc->sc_sleepstates |= __BIT(i); 1363 } 1364 } 1365 1366 void 1367 acpi_enter_sleep_state(struct acpi_softc *sc, int state) 1368 { 1369 ACPI_STATUS rv; 1370 int err; 1371 1372 if (state == sc->sc_sleepstate) 1373 return; 1374 1375 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1376 1377 switch (state) { 1378 1379 case ACPI_STATE_S0: 1380 sc->sc_sleepstate = ACPI_STATE_S0; 1381 return; 1382 1383 case ACPI_STATE_S1: 1384 case ACPI_STATE_S2: 1385 case ACPI_STATE_S3: 1386 case ACPI_STATE_S4: 1387 1388 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1389 aprint_error_dev(sc->sc_dev, "sleep state " 1390 "S%d is not available\n", state); 1391 return; 1392 } 1393 1394 /* 1395 * Evaluate the _TTS method. This should be done before 1396 * pmf_system_suspend(9) and the evaluation of _PTS. 1397 * We should also re-evaluate this once we return to 1398 * S0 or if we abort the sleep state transition in the 1399 * middle (see ACPI 3.0, section 7.3.6). In reality, 1400 * however, the _TTS method is seldom seen in the field. 1401 */ 1402 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1403 1404 if (ACPI_SUCCESS(rv)) 1405 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1406 1407 if (state != ACPI_STATE_S1 && 1408 pmf_system_suspend(PMF_Q_NONE) != true) { 1409 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1410 break; 1411 } 1412 1413 /* 1414 * This will evaluate the _PTS and _SST methods, 1415 * but unlike the documentation claims, not _GTS, 1416 * which is evaluated in AcpiEnterSleepState(). 1417 * This must be called with interrupts enabled. 1418 */ 1419 rv = AcpiEnterSleepStatePrep(state); 1420 1421 if (ACPI_FAILURE(rv)) { 1422 aprint_error_dev(sc->sc_dev, "failed to prepare " 1423 "S%d: %s\n", state, AcpiFormatException(rv)); 1424 break; 1425 } 1426 1427 /* 1428 * After the _PTS method has been evaluated, we can 1429 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1430 */ 1431 acpi_wakedev_commit(sc, state); 1432 1433 sc->sc_sleepstate = state; 1434 1435 if (state == ACPI_STATE_S1) { 1436 1437 /* Just enter the state. */ 1438 acpi_md_OsDisableInterrupt(); 1439 rv = AcpiEnterSleepState(state); 1440 1441 if (ACPI_FAILURE(rv)) 1442 aprint_error_dev(sc->sc_dev, "failed to " 1443 "enter S1: %s\n", AcpiFormatException(rv)); 1444 1445 (void)AcpiLeaveSleepState(state); 1446 1447 } else { 1448 1449 err = acpi_md_sleep(state); 1450 1451 if (state == ACPI_STATE_S4) 1452 AcpiEnable(); 1453 1454 pmf_system_bus_resume(PMF_Q_NONE); 1455 (void)AcpiLeaveSleepState(state); 1456 pmf_system_resume(PMF_Q_NONE); 1457 } 1458 1459 break; 1460 1461 case ACPI_STATE_S5: 1462 1463 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1464 1465 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1466 1467 if (ACPI_FAILURE(rv)) { 1468 aprint_error_dev(sc->sc_dev, "failed to prepare " 1469 "S%d: %s\n", state, AcpiFormatException(rv)); 1470 break; 1471 } 1472 1473 DELAY(1000000); 1474 1475 sc->sc_sleepstate = state; 1476 acpi_md_OsDisableInterrupt(); 1477 1478 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1479 1480 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1481 1482 break; 1483 } 1484 1485 sc->sc_sleepstate = ACPI_STATE_S0; 1486 1487 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1488 } 1489 1490 /* 1491 * Sysctl. 1492 */ 1493 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1494 { 1495 const struct sysctlnode *mnode, *rnode; 1496 int err; 1497 1498 err = sysctl_createv(clog, 0, NULL, &rnode, 1499 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", 1500 NULL, NULL, 0, NULL, 0, 1501 CTL_HW, CTL_EOL); 1502 1503 if (err != 0) 1504 return; 1505 1506 err = sysctl_createv(clog, 0, &rnode, &rnode, 1507 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1508 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1509 NULL, 0, NULL, 0, 1510 CTL_CREATE, CTL_EOL); 1511 1512 if (err != 0) 1513 return; 1514 1515 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1516 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1517 "root", SYSCTL_DESCR("ACPI root pointer"), 1518 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1519 CTL_CREATE, CTL_EOL); 1520 1521 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1522 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1523 "supported_states", SYSCTL_DESCR("Supported system states"), 1524 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1525 CTL_CREATE, CTL_EOL); 1526 1527 err = sysctl_createv(NULL, 0, NULL, &mnode, 1528 CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep", 1529 NULL, NULL, 0, NULL, 0, 1530 CTL_MACHDEP, CTL_EOL); 1531 1532 if (err == 0) { 1533 1534 (void)sysctl_createv(NULL, 0, &mnode, NULL, 1535 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1536 "sleep_state", SYSCTL_DESCR("System sleep state"), 1537 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1538 CTL_CREATE, CTL_EOL); 1539 } 1540 1541 err = sysctl_createv(clog, 0, &rnode, &rnode, 1542 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1543 "stat", SYSCTL_DESCR("ACPI statistics"), 1544 NULL, 0, NULL, 0, 1545 CTL_CREATE, CTL_EOL); 1546 1547 if (err != 0) 1548 return; 1549 1550 (void)sysctl_createv(clog, 0, &rnode, NULL, 1551 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1552 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1553 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1554 CTL_CREATE, CTL_EOL); 1555 1556 (void)sysctl_createv(clog, 0, &rnode, NULL, 1557 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1558 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1559 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1560 CTL_CREATE, CTL_EOL); 1561 1562 (void)sysctl_createv(clog, 0, &rnode, NULL, 1563 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1564 "fixed", SYSCTL_DESCR("Number of fixed events"), 1565 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1566 CTL_CREATE, CTL_EOL); 1567 1568 (void)sysctl_createv(clog, 0, &rnode, NULL, 1569 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1570 "method", SYSCTL_DESCR("Number of methods executed"), 1571 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1572 CTL_CREATE, CTL_EOL); 1573 1574 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1575 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1576 } 1577 1578 static int 1579 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1580 { 1581 struct sysctlnode node; 1582 uint64_t t; 1583 int err, i; 1584 1585 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1586 t += AcpiFixedEventCount[i]; 1587 1588 node = *rnode; 1589 node.sysctl_data = &t; 1590 1591 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1592 1593 if (err || newp == NULL) 1594 return err; 1595 1596 return 0; 1597 } 1598 1599 static int 1600 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1601 { 1602 struct acpi_softc *sc = acpi_softc; 1603 struct sysctlnode node; 1604 int err, t; 1605 1606 if (acpi_softc == NULL) 1607 return ENOSYS; 1608 1609 node = *rnode; 1610 t = sc->sc_sleepstate; 1611 node.sysctl_data = &t; 1612 1613 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1614 1615 if (err || newp == NULL) 1616 return err; 1617 1618 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1619 return EINVAL; 1620 1621 acpi_enter_sleep_state(sc, t); 1622 1623 return 0; 1624 } 1625 1626 static int 1627 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1628 { 1629 struct acpi_softc *sc = acpi_softc; 1630 struct sysctlnode node; 1631 char t[3 * 6 + 1]; 1632 int err; 1633 1634 if (acpi_softc == NULL) 1635 return ENOSYS; 1636 1637 (void)memset(t, '\0', sizeof(t)); 1638 1639 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1640 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1641 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1642 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1643 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1644 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1645 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1646 1647 node = *rnode; 1648 node.sysctl_data = &t; 1649 1650 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1651 1652 if (err || newp == NULL) 1653 return err; 1654 1655 return 0; 1656 } 1657 1658 /* 1659 * Tables. 1660 */ 1661 ACPI_PHYSICAL_ADDRESS 1662 acpi_OsGetRootPointer(void) 1663 { 1664 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1665 1666 /* 1667 * We let MD code handle this since there are multiple ways to do it: 1668 * 1669 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1670 * 1671 * IA-64: Use the EFI. 1672 */ 1673 PhysicalAddress = acpi_md_OsGetRootPointer(); 1674 1675 if (acpi_root_pointer == 0) 1676 acpi_root_pointer = PhysicalAddress; 1677 1678 return PhysicalAddress; 1679 } 1680 1681 static ACPI_TABLE_HEADER * 1682 acpi_map_rsdt(void) 1683 { 1684 ACPI_PHYSICAL_ADDRESS paddr; 1685 ACPI_TABLE_RSDP *rsdp; 1686 1687 paddr = AcpiOsGetRootPointer(); 1688 1689 if (paddr == 0) 1690 return NULL; 1691 1692 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1693 1694 if (rsdp == NULL) 1695 return NULL; 1696 1697 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1698 paddr = rsdp->XsdtPhysicalAddress; 1699 else 1700 paddr = rsdp->RsdtPhysicalAddress; 1701 1702 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1703 1704 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1705 } 1706 1707 static void 1708 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1709 { 1710 1711 if (rsdt == NULL) 1712 return; 1713 1714 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1715 } 1716 1717 /* 1718 * XXX: Refactor to be a generic function that maps tables. 1719 */ 1720 ACPI_STATUS 1721 acpi_madt_map(void) 1722 { 1723 ACPI_STATUS rv; 1724 1725 if (madt_header != NULL) 1726 return AE_ALREADY_EXISTS; 1727 1728 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); 1729 1730 if (ACPI_FAILURE(rv)) 1731 return rv; 1732 1733 return AE_OK; 1734 } 1735 1736 void 1737 acpi_madt_unmap(void) 1738 { 1739 madt_header = NULL; 1740 } 1741 1742 /* 1743 * XXX: Refactor to be a generic function that walks tables. 1744 */ 1745 void 1746 acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) 1747 { 1748 ACPI_SUBTABLE_HEADER *hdrp; 1749 char *madtend, *where; 1750 1751 madtend = (char *)madt_header + madt_header->Length; 1752 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); 1753 1754 while (where < madtend) { 1755 1756 hdrp = (ACPI_SUBTABLE_HEADER *)where; 1757 1758 if (ACPI_FAILURE(func(hdrp, aux))) 1759 break; 1760 1761 where += hdrp->Length; 1762 } 1763 } 1764 1765 /* 1766 * Miscellaneous. 1767 */ 1768 static bool 1769 acpi_is_scope(struct acpi_devnode *ad) 1770 { 1771 int i; 1772 1773 /* 1774 * Return true if the node is a root scope. 1775 */ 1776 if (ad->ad_parent == NULL) 1777 return false; 1778 1779 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1780 return false; 1781 1782 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1783 1784 if (acpi_scopes[i] == NULL) 1785 continue; 1786 1787 if (ad->ad_handle == acpi_scopes[i]) 1788 return true; 1789 } 1790 1791 return false; 1792 } 1793 1794 /* 1795 * ACPIVERBOSE. 1796 */ 1797 void 1798 acpi_load_verbose(void) 1799 { 1800 1801 if (acpi_verbose_loaded == 0) 1802 module_autoload("acpiverbose", MODULE_CLASS_MISC); 1803 } 1804 1805 void 1806 acpi_print_verbose_stub(struct acpi_softc *sc) 1807 { 1808 1809 acpi_load_verbose(); 1810 1811 if (acpi_verbose_loaded != 0) 1812 acpi_print_verbose(sc); 1813 } 1814 1815 void 1816 acpi_print_dev_stub(const char *pnpstr) 1817 { 1818 1819 acpi_load_verbose(); 1820 1821 if (acpi_verbose_loaded != 0) 1822 acpi_print_dev(pnpstr); 1823 } 1824
Indexes created Wed Sep 24 05:09:52 GMT 2025