acpi.c revision 1.114.2.8
1 /* $NetBSD: acpi.c,v 1.114.2.8 2010/10/09 03:32:03 yamt 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 1.114.2.8 2010/10/09 03:32:03 yamt 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 * Handled internally. 983 */ 984 if (di->Type == ACPI_TYPE_POWER) 985 continue; 986 987 /* 988 * Skip ignored HIDs. 989 */ 990 if (acpi_match_hid(di, acpi_ignored_ids)) 991 continue; 992 993 aa.aa_node = ad; 994 aa.aa_iot = sc->sc_iot; 995 aa.aa_memt = sc->sc_memt; 996 aa.aa_pc = sc->sc_pc; 997 aa.aa_pciflags = sc->sc_pciflags; 998 aa.aa_ic = sc->sc_ic; 999 1000 ad->ad_device = config_found_ia(sc->sc_dev, 1001 "acpinodebus", &aa, acpi_print); 1002 } 1003 } 1004 1005 static void 1006 acpi_rescan_capabilities(struct acpi_softc *sc) 1007 { 1008 struct acpi_devnode *ad; 1009 ACPI_HANDLE tmp; 1010 ACPI_STATUS rv; 1011 1012 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1013 1014 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 1015 continue; 1016 1017 /* 1018 * Scan power resource capabilities. 1019 * 1020 * If any power states are supported, 1021 * at least _PR0 and _PR3 must be present. 1022 */ 1023 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 1024 1025 if (ACPI_SUCCESS(rv)) { 1026 ad->ad_flags |= ACPI_DEVICE_POWER; 1027 acpi_power_add(ad); 1028 } 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 } 1041 1042 static int 1043 acpi_print(void *aux, const char *pnp) 1044 { 1045 struct acpi_attach_args *aa = aux; 1046 ACPI_STATUS rv; 1047 1048 if (pnp) { 1049 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1050 char *pnpstr = 1051 aa->aa_node->ad_devinfo->HardwareId.String; 1052 ACPI_BUFFER buf; 1053 1054 aprint_normal("%s (%s) ", aa->aa_node->ad_name, 1055 pnpstr); 1056 1057 rv = acpi_eval_struct(aa->aa_node->ad_handle, 1058 "_STR", &buf); 1059 if (ACPI_SUCCESS(rv)) { 1060 ACPI_OBJECT *obj = buf.Pointer; 1061 switch (obj->Type) { 1062 case ACPI_TYPE_STRING: 1063 aprint_normal("[%s] ", obj->String.Pointer); 1064 break; 1065 case ACPI_TYPE_BUFFER: 1066 aprint_normal("buffer %p ", obj->Buffer.Pointer); 1067 break; 1068 default: 1069 aprint_normal("type %u ",obj->Type); 1070 break; 1071 } 1072 ACPI_FREE(buf.Pointer); 1073 } 1074 else 1075 acpi_print_dev(pnpstr); 1076 1077 aprint_normal("at %s", pnp); 1078 } else if (aa->aa_node->ad_devinfo->Type != ACPI_TYPE_DEVICE) { 1079 aprint_normal("%s (ACPI Object Type '%s' " 1080 "[0x%02x]) ", aa->aa_node->ad_name, 1081 AcpiUtGetTypeName(aa->aa_node->ad_devinfo->Type), 1082 aa->aa_node->ad_devinfo->Type); 1083 aprint_normal("at %s", pnp); 1084 } else 1085 return 0; 1086 } else { 1087 aprint_normal(" (%s", aa->aa_node->ad_name); 1088 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1089 aprint_normal(", %s", aa->aa_node->ad_devinfo->HardwareId.String); 1090 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_UID) { 1091 const char *uid; 1092 1093 uid = aa->aa_node->ad_devinfo->UniqueId.String; 1094 if (uid[0] == '\0') 1095 uid = "<null>"; 1096 aprint_normal("-%s", uid); 1097 } 1098 } 1099 aprint_normal(")"); 1100 } 1101 1102 return UNCONF; 1103 } 1104 1105 /* 1106 * Notify. 1107 */ 1108 static void 1109 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1110 { 1111 struct acpi_softc *sc = acpi_softc; 1112 struct acpi_devnode *ad; 1113 1114 KASSERT(sc != NULL); 1115 KASSERT(aux == NULL); 1116 KASSERT(acpi_active != 0); 1117 1118 if (acpi_suspended != 0) 1119 return; 1120 1121 /* 1122 * System: 0x00 - 0x7F. 1123 * Device: 0x80 - 0xFF. 1124 */ 1125 switch (event) { 1126 1127 case ACPI_NOTIFY_BUS_CHECK: 1128 case ACPI_NOTIFY_DEVICE_CHECK: 1129 case ACPI_NOTIFY_DEVICE_WAKE: 1130 case ACPI_NOTIFY_EJECT_REQUEST: 1131 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1132 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1133 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1134 case ACPI_NOTIFY_POWER_FAULT: 1135 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1136 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1137 case ACPI_NOTIFY_RESERVED: 1138 case ACPI_NOTIFY_LOCALITY_UPDATE: 1139 break; 1140 } 1141 1142 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1143 "%s (%p)\n", event, acpi_name(handle), handle)); 1144 1145 /* 1146 * We deliver notifications only to drivers 1147 * that have been succesfully attached and 1148 * that have registered a handler with us. 1149 * The opaque pointer is always the device_t. 1150 */ 1151 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1152 1153 if (ad->ad_device == NULL) 1154 continue; 1155 1156 if (ad->ad_notify == NULL) 1157 continue; 1158 1159 if (ad->ad_handle != handle) 1160 continue; 1161 1162 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1163 1164 return; 1165 } 1166 1167 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1168 "for %s (%p)\n", event, acpi_name(handle), handle); 1169 } 1170 1171 bool 1172 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1173 { 1174 struct acpi_softc *sc = acpi_softc; 1175 1176 KASSERT(sc != NULL); 1177 KASSERT(acpi_active != 0); 1178 1179 if (acpi_suspended != 0) 1180 goto fail; 1181 1182 if (ad == NULL || notify == NULL) 1183 goto fail; 1184 1185 ad->ad_notify = notify; 1186 1187 return true; 1188 1189 fail: 1190 aprint_error_dev(sc->sc_dev, "failed to register notify " 1191 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1192 1193 return false; 1194 } 1195 1196 void 1197 acpi_deregister_notify(struct acpi_devnode *ad) 1198 { 1199 1200 ad->ad_notify = NULL; 1201 } 1202 1203 /* 1204 * Fixed buttons. 1205 */ 1206 static void 1207 acpi_register_fixed_button(struct acpi_softc *sc, int event) 1208 { 1209 struct sysmon_pswitch *smpsw; 1210 ACPI_STATUS rv; 1211 int type; 1212 1213 switch (event) { 1214 1215 case ACPI_EVENT_POWER_BUTTON: 1216 1217 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1218 return; 1219 1220 type = PSWITCH_TYPE_POWER; 1221 smpsw = &sc->sc_smpsw_power; 1222 break; 1223 1224 case ACPI_EVENT_SLEEP_BUTTON: 1225 1226 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1227 return; 1228 1229 type = PSWITCH_TYPE_SLEEP; 1230 smpsw = &sc->sc_smpsw_sleep; 1231 break; 1232 1233 default: 1234 rv = AE_TYPE; 1235 goto fail; 1236 } 1237 1238 smpsw->smpsw_type = type; 1239 smpsw->smpsw_name = device_xname(sc->sc_dev); 1240 1241 if (sysmon_pswitch_register(smpsw) != 0) { 1242 rv = AE_ERROR; 1243 goto fail; 1244 } 1245 1246 rv = AcpiInstallFixedEventHandler(event, 1247 acpi_fixed_button_handler, smpsw); 1248 1249 if (ACPI_FAILURE(rv)) { 1250 sysmon_pswitch_unregister(smpsw); 1251 goto fail; 1252 } 1253 1254 aprint_debug_dev(sc->sc_dev, "fixed %s button present\n", 1255 (type != ACPI_EVENT_SLEEP_BUTTON) ? "power" : "sleep"); 1256 1257 return; 1258 1259 fail: 1260 aprint_error_dev(sc->sc_dev, "failed to register " 1261 "fixed event: %s\n", AcpiFormatException(rv)); 1262 } 1263 1264 static void 1265 acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1266 { 1267 struct sysmon_pswitch *smpsw; 1268 ACPI_STATUS rv; 1269 1270 switch (event) { 1271 1272 case ACPI_EVENT_POWER_BUTTON: 1273 smpsw = &sc->sc_smpsw_power; 1274 1275 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1276 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1277 return; 1278 } 1279 1280 break; 1281 1282 case ACPI_EVENT_SLEEP_BUTTON: 1283 smpsw = &sc->sc_smpsw_sleep; 1284 1285 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1286 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1287 return; 1288 } 1289 1290 break; 1291 1292 default: 1293 rv = AE_TYPE; 1294 goto fail; 1295 } 1296 1297 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1298 1299 if (ACPI_SUCCESS(rv)) { 1300 sysmon_pswitch_unregister(smpsw); 1301 return; 1302 } 1303 1304 fail: 1305 aprint_error_dev(sc->sc_dev, "failed to deregister " 1306 "fixed event: %s\n", AcpiFormatException(rv)); 1307 } 1308 1309 static uint32_t 1310 acpi_fixed_button_handler(void *context) 1311 { 1312 static const int handler = OSL_NOTIFY_HANDLER; 1313 struct sysmon_pswitch *smpsw = context; 1314 1315 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1316 1317 return ACPI_INTERRUPT_HANDLED; 1318 } 1319 1320 static void 1321 acpi_fixed_button_pressed(void *context) 1322 { 1323 struct sysmon_pswitch *smpsw = context; 1324 1325 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1326 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1327 "power" : "sleep")); 1328 1329 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1330 } 1331 1332 /* 1333 * Sleep. 1334 */ 1335 static void 1336 acpi_sleep_init(struct acpi_softc *sc) 1337 { 1338 uint8_t a, b, i; 1339 ACPI_STATUS rv; 1340 1341 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1342 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1343 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1344 1345 /* 1346 * Evaluate supported sleep states. 1347 */ 1348 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1349 1350 rv = AcpiGetSleepTypeData(i, &a, &b); 1351 1352 if (ACPI_SUCCESS(rv)) 1353 sc->sc_sleepstates |= __BIT(i); 1354 } 1355 } 1356 1357 void 1358 acpi_enter_sleep_state(struct acpi_softc *sc, int state) 1359 { 1360 ACPI_STATUS rv; 1361 int err; 1362 1363 if (state == sc->sc_sleepstate) 1364 return; 1365 1366 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1367 1368 switch (state) { 1369 1370 case ACPI_STATE_S0: 1371 sc->sc_sleepstate = ACPI_STATE_S0; 1372 return; 1373 1374 case ACPI_STATE_S1: 1375 case ACPI_STATE_S2: 1376 case ACPI_STATE_S3: 1377 case ACPI_STATE_S4: 1378 1379 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1380 aprint_error_dev(sc->sc_dev, "sleep state " 1381 "S%d is not available\n", state); 1382 return; 1383 } 1384 1385 /* 1386 * Evaluate the _TTS method. This should be done before 1387 * pmf_system_suspend(9) and the evaluation of _PTS. 1388 * We should also re-evaluate this once we return to 1389 * S0 or if we abort the sleep state transition in the 1390 * middle (see ACPI 3.0, section 7.3.6). In reality, 1391 * however, the _TTS method is seldom seen in the field. 1392 */ 1393 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1394 1395 if (ACPI_SUCCESS(rv)) 1396 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1397 1398 if (state != ACPI_STATE_S1 && 1399 pmf_system_suspend(PMF_Q_NONE) != true) { 1400 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1401 break; 1402 } 1403 1404 /* 1405 * This will evaluate the _PTS and _SST methods, 1406 * but unlike the documentation claims, not _GTS, 1407 * which is evaluated in AcpiEnterSleepState(). 1408 * This must be called with interrupts enabled. 1409 */ 1410 rv = AcpiEnterSleepStatePrep(state); 1411 1412 if (ACPI_FAILURE(rv)) { 1413 aprint_error_dev(sc->sc_dev, "failed to prepare " 1414 "S%d: %s\n", state, AcpiFormatException(rv)); 1415 break; 1416 } 1417 1418 /* 1419 * After the _PTS method has been evaluated, we can 1420 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1421 */ 1422 acpi_wakedev_commit(sc, state); 1423 1424 sc->sc_sleepstate = state; 1425 1426 if (state == ACPI_STATE_S1) { 1427 1428 /* Just enter the state. */ 1429 acpi_md_OsDisableInterrupt(); 1430 rv = AcpiEnterSleepState(state); 1431 1432 if (ACPI_FAILURE(rv)) 1433 aprint_error_dev(sc->sc_dev, "failed to " 1434 "enter S1: %s\n", AcpiFormatException(rv)); 1435 1436 (void)AcpiLeaveSleepState(state); 1437 1438 } else { 1439 1440 err = acpi_md_sleep(state); 1441 1442 if (state == ACPI_STATE_S4) 1443 AcpiEnable(); 1444 1445 pmf_system_bus_resume(PMF_Q_NONE); 1446 (void)AcpiLeaveSleepState(state); 1447 pmf_system_resume(PMF_Q_NONE); 1448 } 1449 1450 break; 1451 1452 case ACPI_STATE_S5: 1453 1454 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1455 1456 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1457 1458 if (ACPI_FAILURE(rv)) { 1459 aprint_error_dev(sc->sc_dev, "failed to prepare " 1460 "S%d: %s\n", state, AcpiFormatException(rv)); 1461 break; 1462 } 1463 1464 DELAY(1000000); 1465 1466 sc->sc_sleepstate = state; 1467 acpi_md_OsDisableInterrupt(); 1468 1469 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1470 1471 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1472 1473 break; 1474 } 1475 1476 sc->sc_sleepstate = ACPI_STATE_S0; 1477 1478 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1479 } 1480 1481 /* 1482 * Sysctl. 1483 */ 1484 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1485 { 1486 const struct sysctlnode *mnode, *rnode; 1487 int err; 1488 1489 err = sysctl_createv(clog, 0, NULL, &rnode, 1490 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", 1491 NULL, NULL, 0, NULL, 0, 1492 CTL_HW, CTL_EOL); 1493 1494 if (err != 0) 1495 return; 1496 1497 err = sysctl_createv(clog, 0, &rnode, &rnode, 1498 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1499 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1500 NULL, 0, NULL, 0, 1501 CTL_CREATE, CTL_EOL); 1502 1503 if (err != 0) 1504 return; 1505 1506 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1507 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1508 "root", SYSCTL_DESCR("ACPI root pointer"), 1509 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1510 CTL_CREATE, CTL_EOL); 1511 1512 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1513 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1514 "supported_states", SYSCTL_DESCR("Supported system states"), 1515 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1516 CTL_CREATE, CTL_EOL); 1517 1518 err = sysctl_createv(NULL, 0, NULL, &mnode, 1519 CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep", 1520 NULL, NULL, 0, NULL, 0, 1521 CTL_MACHDEP, CTL_EOL); 1522 1523 if (err == 0) { 1524 1525 (void)sysctl_createv(NULL, 0, &mnode, NULL, 1526 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1527 "sleep_state", SYSCTL_DESCR("System sleep state"), 1528 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1529 CTL_CREATE, CTL_EOL); 1530 } 1531 1532 err = sysctl_createv(clog, 0, &rnode, &rnode, 1533 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1534 "stat", SYSCTL_DESCR("ACPI statistics"), 1535 NULL, 0, NULL, 0, 1536 CTL_CREATE, CTL_EOL); 1537 1538 if (err != 0) 1539 return; 1540 1541 (void)sysctl_createv(clog, 0, &rnode, NULL, 1542 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1543 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1544 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1545 CTL_CREATE, CTL_EOL); 1546 1547 (void)sysctl_createv(clog, 0, &rnode, NULL, 1548 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1549 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1550 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1551 CTL_CREATE, CTL_EOL); 1552 1553 (void)sysctl_createv(clog, 0, &rnode, NULL, 1554 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1555 "fixed", SYSCTL_DESCR("Number of fixed events"), 1556 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1557 CTL_CREATE, CTL_EOL); 1558 1559 (void)sysctl_createv(clog, 0, &rnode, NULL, 1560 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1561 "method", SYSCTL_DESCR("Number of methods executed"), 1562 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1563 CTL_CREATE, CTL_EOL); 1564 1565 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1566 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1567 } 1568 1569 static int 1570 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1571 { 1572 struct sysctlnode node; 1573 uint64_t t; 1574 int err, i; 1575 1576 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1577 t += AcpiFixedEventCount[i]; 1578 1579 node = *rnode; 1580 node.sysctl_data = &t; 1581 1582 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1583 1584 if (err || newp == NULL) 1585 return err; 1586 1587 return 0; 1588 } 1589 1590 static int 1591 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1592 { 1593 struct acpi_softc *sc = acpi_softc; 1594 struct sysctlnode node; 1595 int err, t; 1596 1597 if (acpi_softc == NULL) 1598 return ENOSYS; 1599 1600 node = *rnode; 1601 t = sc->sc_sleepstate; 1602 node.sysctl_data = &t; 1603 1604 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1605 1606 if (err || newp == NULL) 1607 return err; 1608 1609 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1610 return EINVAL; 1611 1612 acpi_enter_sleep_state(sc, t); 1613 1614 return 0; 1615 } 1616 1617 static int 1618 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1619 { 1620 struct acpi_softc *sc = acpi_softc; 1621 struct sysctlnode node; 1622 char t[3 * 6 + 1]; 1623 int err; 1624 1625 if (acpi_softc == NULL) 1626 return ENOSYS; 1627 1628 (void)memset(t, '\0', sizeof(t)); 1629 1630 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1631 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1632 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1633 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1634 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1635 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1636 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1637 1638 node = *rnode; 1639 node.sysctl_data = &t; 1640 1641 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1642 1643 if (err || newp == NULL) 1644 return err; 1645 1646 return 0; 1647 } 1648 1649 /* 1650 * Tables. 1651 */ 1652 ACPI_PHYSICAL_ADDRESS 1653 acpi_OsGetRootPointer(void) 1654 { 1655 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1656 1657 /* 1658 * We let MD code handle this since there are multiple ways to do it: 1659 * 1660 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1661 * 1662 * IA-64: Use the EFI. 1663 */ 1664 PhysicalAddress = acpi_md_OsGetRootPointer(); 1665 1666 if (acpi_root_pointer == 0) 1667 acpi_root_pointer = PhysicalAddress; 1668 1669 return PhysicalAddress; 1670 } 1671 1672 static ACPI_TABLE_HEADER * 1673 acpi_map_rsdt(void) 1674 { 1675 ACPI_PHYSICAL_ADDRESS paddr; 1676 ACPI_TABLE_RSDP *rsdp; 1677 1678 paddr = AcpiOsGetRootPointer(); 1679 1680 if (paddr == 0) 1681 return NULL; 1682 1683 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1684 1685 if (rsdp == NULL) 1686 return NULL; 1687 1688 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1689 paddr = rsdp->XsdtPhysicalAddress; 1690 else 1691 paddr = rsdp->RsdtPhysicalAddress; 1692 1693 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1694 1695 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1696 } 1697 1698 static void 1699 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1700 { 1701 1702 if (rsdt == NULL) 1703 return; 1704 1705 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1706 } 1707 1708 /* 1709 * XXX: Refactor to be a generic function that maps tables. 1710 */ 1711 ACPI_STATUS 1712 acpi_madt_map(void) 1713 { 1714 ACPI_STATUS rv; 1715 1716 if (madt_header != NULL) 1717 return AE_ALREADY_EXISTS; 1718 1719 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); 1720 1721 if (ACPI_FAILURE(rv)) 1722 return rv; 1723 1724 return AE_OK; 1725 } 1726 1727 void 1728 acpi_madt_unmap(void) 1729 { 1730 madt_header = NULL; 1731 } 1732 1733 /* 1734 * XXX: Refactor to be a generic function that walks tables. 1735 */ 1736 void 1737 acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) 1738 { 1739 ACPI_SUBTABLE_HEADER *hdrp; 1740 char *madtend, *where; 1741 1742 madtend = (char *)madt_header + madt_header->Length; 1743 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); 1744 1745 while (where < madtend) { 1746 1747 hdrp = (ACPI_SUBTABLE_HEADER *)where; 1748 1749 if (ACPI_FAILURE(func(hdrp, aux))) 1750 break; 1751 1752 where += hdrp->Length; 1753 } 1754 } 1755 1756 /* 1757 * Miscellaneous. 1758 */ 1759 static bool 1760 acpi_is_scope(struct acpi_devnode *ad) 1761 { 1762 int i; 1763 1764 /* 1765 * Return true if the node is a root scope. 1766 */ 1767 if (ad->ad_parent == NULL) 1768 return false; 1769 1770 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1771 return false; 1772 1773 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1774 1775 if (acpi_scopes[i] == NULL) 1776 continue; 1777 1778 if (ad->ad_handle == acpi_scopes[i]) 1779 return true; 1780 } 1781 1782 return false; 1783 } 1784 1785 /* 1786 * ACPIVERBOSE. 1787 */ 1788 void 1789 acpi_load_verbose(void) 1790 { 1791 1792 if (acpi_verbose_loaded == 0) 1793 module_autoload("acpiverbose", MODULE_CLASS_MISC); 1794 } 1795 1796 void 1797 acpi_print_verbose_stub(struct acpi_softc *sc) 1798 { 1799 1800 acpi_load_verbose(); 1801 1802 if (acpi_verbose_loaded != 0) 1803 acpi_print_verbose(sc); 1804 } 1805 1806 void 1807 acpi_print_dev_stub(const char *pnpstr) 1808 { 1809 1810 acpi_load_verbose(); 1811 1812 if (acpi_verbose_loaded != 0) 1813 acpi_print_dev(pnpstr); 1814 } 1815
Indexes created Wed Oct 01 19:09:53 GMT 2025