acpi.c revision 1.148.2.3
1 /* $NetBSD: acpi.c,v 1.148.2.3 2010/10/22 07:21:51 uebayasi 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 1.148.2.3 2010/10/22 07:21:51 uebayasi 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_pcidev_scan(sc->sc_root); 669 (void)acpi_rescan(sc->sc_dev, NULL, NULL); 670 671 acpi_rescan_capabilities(sc); 672 } 673 674 static ACPI_STATUS 675 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 676 void *context, void **status) 677 { 678 struct acpi_walkcontext *awc = context; 679 struct acpi_softc *sc = awc->aw_sc; 680 struct acpi_devnode *ad; 681 ACPI_DEVICE_INFO *devinfo; 682 ACPI_OBJECT_TYPE type; 683 ACPI_NAME_UNION *anu; 684 ACPI_STATUS rv; 685 int clear, i; 686 687 rv = AcpiGetObjectInfo(handle, &devinfo); 688 689 if (ACPI_FAILURE(rv)) 690 return AE_OK; /* Do not terminate the walk. */ 691 692 type = devinfo->Type; 693 694 switch (type) { 695 696 case ACPI_TYPE_DEVICE: 697 698 #ifdef ACPI_ACTIVATE_DEV 699 acpi_activate_device(handle, &devinfo); 700 #endif 701 702 case ACPI_TYPE_PROCESSOR: 703 case ACPI_TYPE_THERMAL: 704 case ACPI_TYPE_POWER: 705 706 ad = malloc(sizeof(*ad), M_ACPI, M_NOWAIT | M_ZERO); 707 708 if (ad == NULL) 709 return AE_NO_MEMORY; 710 711 ad->ad_device = NULL; 712 ad->ad_notify = NULL; 713 ad->ad_pciinfo = NULL; 714 715 ad->ad_type = type; 716 ad->ad_handle = handle; 717 ad->ad_devinfo = devinfo; 718 719 ad->ad_root = sc->sc_dev; 720 ad->ad_parent = awc->aw_parent; 721 722 anu = (ACPI_NAME_UNION *)&devinfo->Name; 723 ad->ad_name[4] = '\0'; 724 725 for (i = 3, clear = 0; i >= 0; i--) { 726 727 if (clear == 0 && anu->Ascii[i] == '_') 728 ad->ad_name[i] = '\0'; 729 else { 730 ad->ad_name[i] = anu->Ascii[i]; 731 clear = 1; 732 } 733 } 734 735 if (ad->ad_name[0] == '\0') 736 ad->ad_name[0] = '_'; 737 738 SIMPLEQ_INIT(&ad->ad_child_head); 739 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 740 741 acpi_set_node(ad); 742 743 if (ad->ad_parent != NULL) { 744 745 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 746 ad, ad_child_list); 747 } 748 749 awc->aw_parent = ad; 750 } 751 752 return AE_OK; 753 } 754 755 static ACPI_STATUS 756 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 757 void *context, void **status) 758 { 759 struct acpi_walkcontext *awc = context; 760 761 KASSERT(awc != NULL); 762 KASSERT(awc->aw_parent != NULL); 763 764 if (handle == awc->aw_parent->ad_handle) 765 awc->aw_parent = awc->aw_parent->ad_parent; 766 767 return AE_OK; 768 } 769 770 #ifdef ACPI_ACTIVATE_DEV 771 static void 772 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 773 { 774 static const int valid = ACPI_VALID_STA | ACPI_VALID_HID; 775 ACPI_DEVICE_INFO *newdi; 776 ACPI_STATUS rv; 777 uint32_t old; 778 779 /* 780 * If the device is valid and present, 781 * but not enabled, try to activate it. 782 */ 783 if (((*di)->Valid & valid) != valid) 784 return; 785 786 old = (*di)->CurrentStatus; 787 788 if ((old & (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED)) != 789 ACPI_STA_DEVICE_PRESENT) 790 return; 791 792 rv = acpi_allocate_resources(handle); 793 794 if (ACPI_FAILURE(rv)) 795 goto fail; 796 797 rv = AcpiGetObjectInfo(handle, &newdi); 798 799 if (ACPI_FAILURE(rv)) 800 goto fail; 801 802 ACPI_FREE(*di); 803 *di = newdi; 804 805 aprint_verbose_dev(acpi_softc->sc_dev, 806 "%s activated, STA 0x%08X -> STA 0x%08X\n", 807 (*di)->HardwareId.String, old, (*di)->CurrentStatus); 808 809 return; 810 811 fail: 812 aprint_error_dev(acpi_softc->sc_dev, "failed to " 813 "activate %s\n", (*di)->HardwareId.String); 814 } 815 816 /* 817 * XXX: This very incomplete. 818 */ 819 ACPI_STATUS 820 acpi_allocate_resources(ACPI_HANDLE handle) 821 { 822 ACPI_BUFFER bufp, bufc, bufn; 823 ACPI_RESOURCE *resp, *resc, *resn; 824 ACPI_RESOURCE_IRQ *irq; 825 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 826 ACPI_STATUS rv; 827 uint delta; 828 829 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 830 if (ACPI_FAILURE(rv)) 831 goto out; 832 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 833 if (ACPI_FAILURE(rv)) { 834 goto out1; 835 } 836 837 bufn.Length = 1000; 838 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 839 resp = bufp.Pointer; 840 resc = bufc.Pointer; 841 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 842 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 843 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 844 resp = ACPI_NEXT_RESOURCE(resp); 845 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 846 break; 847 /* Found identical Id */ 848 resn->Type = resc->Type; 849 switch (resc->Type) { 850 case ACPI_RESOURCE_TYPE_IRQ: 851 memcpy(&resn->Data, &resp->Data, 852 sizeof(ACPI_RESOURCE_IRQ)); 853 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 854 irq->Interrupts[0] = 855 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 856 Interrupts[irq->InterruptCount-1]; 857 irq->InterruptCount = 1; 858 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 859 break; 860 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 861 memcpy(&resn->Data, &resp->Data, 862 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 863 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 864 #if 0 865 /* 866 * XXX: Not duplicating the interrupt logic above 867 * because its not clear what it accomplishes. 868 */ 869 xirq->Interrupts[0] = 870 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 871 Interrupts[irq->NumberOfInterrupts-1]; 872 xirq->NumberOfInterrupts = 1; 873 #endif 874 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 875 break; 876 case ACPI_RESOURCE_TYPE_IO: 877 memcpy(&resn->Data, &resp->Data, 878 sizeof(ACPI_RESOURCE_IO)); 879 resn->Length = resp->Length; 880 break; 881 default: 882 aprint_error_dev(acpi_softc->sc_dev, 883 "%s: invalid type %u\n", __func__, resc->Type); 884 rv = AE_BAD_DATA; 885 goto out2; 886 } 887 resc = ACPI_NEXT_RESOURCE(resc); 888 resn = ACPI_NEXT_RESOURCE(resn); 889 resp = ACPI_NEXT_RESOURCE(resp); 890 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 891 if (delta >= 892 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 893 bufn.Length *= 2; 894 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 895 M_ACPI, M_WAITOK); 896 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 897 delta); 898 } 899 } 900 901 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 902 aprint_error_dev(acpi_softc->sc_dev, 903 "%s: resc not exhausted\n", __func__); 904 rv = AE_BAD_DATA; 905 goto out3; 906 } 907 908 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 909 rv = AcpiSetCurrentResources(handle, &bufn); 910 911 if (ACPI_FAILURE(rv)) 912 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 913 "resources: %s\n", __func__, AcpiFormatException(rv)); 914 915 out3: 916 free(bufn.Pointer, M_ACPI); 917 out2: 918 ACPI_FREE(bufc.Pointer); 919 out1: 920 ACPI_FREE(bufp.Pointer); 921 out: 922 return rv; 923 } 924 #endif /* ACPI_ACTIVATE_DEV */ 925 926 /* 927 * Device attachment. 928 */ 929 static int 930 acpi_rescan(device_t self, const char *ifattr, const int *locators) 931 { 932 struct acpi_softc *sc = device_private(self); 933 934 if (ifattr_match(ifattr, "acpinodebus")) 935 acpi_rescan_nodes(sc); 936 937 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 938 sc->sc_apmbus = config_found_ia(sc->sc_dev, 939 "acpiapmbus", NULL, NULL); 940 941 return 0; 942 } 943 944 static void 945 acpi_rescan_nodes(struct acpi_softc *sc) 946 { 947 struct acpi_attach_args aa; 948 struct acpi_devnode *ad; 949 ACPI_DEVICE_INFO *di; 950 951 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 952 953 if (ad->ad_device != NULL) 954 continue; 955 956 /* 957 * There is a bug in ACPICA: it defines the type 958 * of the scopes incorrectly for its own reasons. 959 */ 960 if (acpi_is_scope(ad) != false) 961 continue; 962 963 di = ad->ad_devinfo; 964 965 /* 966 * We only attach devices which are present, enabled, and 967 * functioning properly. However, if a device is enabled, 968 * it is decoding resources and we should claim these, 969 * if possible. This requires changes to bus_space(9). 970 * Note: there is a possible race condition, because _STA 971 * may have changed since di->CurrentStatus was set. 972 */ 973 if (di->Type == ACPI_TYPE_DEVICE) { 974 975 if ((di->Valid & ACPI_VALID_STA) != 0 && 976 (di->CurrentStatus & ACPI_STA_OK) != ACPI_STA_OK) 977 continue; 978 } 979 980 /* 981 * Handled internally. 982 */ 983 if (di->Type == ACPI_TYPE_POWER) 984 continue; 985 986 /* 987 * Skip ignored HIDs. 988 */ 989 if (acpi_match_hid(di, acpi_ignored_ids)) 990 continue; 991 992 aa.aa_node = ad; 993 aa.aa_iot = sc->sc_iot; 994 aa.aa_memt = sc->sc_memt; 995 aa.aa_pc = sc->sc_pc; 996 aa.aa_pciflags = sc->sc_pciflags; 997 aa.aa_ic = sc->sc_ic; 998 999 ad->ad_device = config_found_ia(sc->sc_dev, 1000 "acpinodebus", &aa, acpi_print); 1001 } 1002 } 1003 1004 static void 1005 acpi_rescan_capabilities(struct acpi_softc *sc) 1006 { 1007 struct acpi_devnode *ad; 1008 ACPI_HANDLE tmp; 1009 ACPI_STATUS rv; 1010 1011 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1012 1013 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 1014 continue; 1015 1016 /* 1017 * Scan power resource capabilities. 1018 * 1019 * If any power states are supported, 1020 * at least _PR0 and _PR3 must be present. 1021 */ 1022 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 1023 1024 if (ACPI_SUCCESS(rv)) { 1025 ad->ad_flags |= ACPI_DEVICE_POWER; 1026 acpi_power_add(ad); 1027 } 1028 1029 /* 1030 * Scan wake-up capabilities. 1031 */ 1032 rv = AcpiGetHandle(ad->ad_handle, "_PRW", &tmp); 1033 1034 if (ACPI_SUCCESS(rv)) { 1035 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 1036 acpi_wakedev_add(ad); 1037 } 1038 } 1039 } 1040 1041 static int 1042 acpi_print(void *aux, const char *pnp) 1043 { 1044 struct acpi_attach_args *aa = aux; 1045 ACPI_STATUS rv; 1046 1047 if (pnp) { 1048 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1049 char *pnpstr = 1050 aa->aa_node->ad_devinfo->HardwareId.String; 1051 ACPI_BUFFER buf; 1052 1053 aprint_normal("%s (%s) ", aa->aa_node->ad_name, 1054 pnpstr); 1055 1056 rv = acpi_eval_struct(aa->aa_node->ad_handle, 1057 "_STR", &buf); 1058 if (ACPI_SUCCESS(rv)) { 1059 ACPI_OBJECT *obj = buf.Pointer; 1060 switch (obj->Type) { 1061 case ACPI_TYPE_STRING: 1062 aprint_normal("[%s] ", obj->String.Pointer); 1063 break; 1064 case ACPI_TYPE_BUFFER: 1065 aprint_normal("buffer %p ", obj->Buffer.Pointer); 1066 break; 1067 default: 1068 aprint_normal("type %u ",obj->Type); 1069 break; 1070 } 1071 ACPI_FREE(buf.Pointer); 1072 } 1073 else 1074 acpi_print_dev(pnpstr); 1075 1076 aprint_normal("at %s", pnp); 1077 } else if (aa->aa_node->ad_devinfo->Type != ACPI_TYPE_DEVICE) { 1078 aprint_normal("%s (ACPI Object Type '%s' " 1079 "[0x%02x]) ", aa->aa_node->ad_name, 1080 AcpiUtGetTypeName(aa->aa_node->ad_devinfo->Type), 1081 aa->aa_node->ad_devinfo->Type); 1082 aprint_normal("at %s", pnp); 1083 } else 1084 return 0; 1085 } else { 1086 aprint_normal(" (%s", aa->aa_node->ad_name); 1087 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1088 aprint_normal(", %s", aa->aa_node->ad_devinfo->HardwareId.String); 1089 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_UID) { 1090 const char *uid; 1091 1092 uid = aa->aa_node->ad_devinfo->UniqueId.String; 1093 if (uid[0] == '\0') 1094 uid = "<null>"; 1095 aprint_normal("-%s", uid); 1096 } 1097 } 1098 aprint_normal(")"); 1099 } 1100 1101 return UNCONF; 1102 } 1103 1104 /* 1105 * Notify. 1106 */ 1107 static void 1108 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1109 { 1110 struct acpi_softc *sc = acpi_softc; 1111 struct acpi_devnode *ad; 1112 1113 KASSERT(sc != NULL); 1114 KASSERT(aux == NULL); 1115 KASSERT(acpi_active != 0); 1116 1117 if (acpi_suspended != 0) 1118 return; 1119 1120 /* 1121 * System: 0x00 - 0x7F. 1122 * Device: 0x80 - 0xFF. 1123 */ 1124 switch (event) { 1125 1126 case ACPI_NOTIFY_BUS_CHECK: 1127 case ACPI_NOTIFY_DEVICE_CHECK: 1128 case ACPI_NOTIFY_DEVICE_WAKE: 1129 case ACPI_NOTIFY_EJECT_REQUEST: 1130 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1131 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1132 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1133 case ACPI_NOTIFY_POWER_FAULT: 1134 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1135 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1136 case ACPI_NOTIFY_RESERVED: 1137 case ACPI_NOTIFY_LOCALITY_UPDATE: 1138 break; 1139 } 1140 1141 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1142 "%s (%p)\n", event, acpi_name(handle), handle)); 1143 1144 /* 1145 * We deliver notifications only to drivers 1146 * that have been succesfully attached and 1147 * that have registered a handler with us. 1148 * The opaque pointer is always the device_t. 1149 */ 1150 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1151 1152 if (ad->ad_device == NULL) 1153 continue; 1154 1155 if (ad->ad_notify == NULL) 1156 continue; 1157 1158 if (ad->ad_handle != handle) 1159 continue; 1160 1161 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1162 1163 return; 1164 } 1165 1166 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1167 "for %s (%p)\n", event, acpi_name(handle), handle); 1168 } 1169 1170 bool 1171 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1172 { 1173 struct acpi_softc *sc = acpi_softc; 1174 1175 KASSERT(sc != NULL); 1176 KASSERT(acpi_active != 0); 1177 1178 if (acpi_suspended != 0) 1179 goto fail; 1180 1181 if (ad == NULL || notify == NULL) 1182 goto fail; 1183 1184 ad->ad_notify = notify; 1185 1186 return true; 1187 1188 fail: 1189 aprint_error_dev(sc->sc_dev, "failed to register notify " 1190 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1191 1192 return false; 1193 } 1194 1195 void 1196 acpi_deregister_notify(struct acpi_devnode *ad) 1197 { 1198 1199 ad->ad_notify = NULL; 1200 } 1201 1202 /* 1203 * Fixed buttons. 1204 */ 1205 static void 1206 acpi_register_fixed_button(struct acpi_softc *sc, int event) 1207 { 1208 struct sysmon_pswitch *smpsw; 1209 ACPI_STATUS rv; 1210 int type; 1211 1212 switch (event) { 1213 1214 case ACPI_EVENT_POWER_BUTTON: 1215 1216 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1217 return; 1218 1219 type = PSWITCH_TYPE_POWER; 1220 smpsw = &sc->sc_smpsw_power; 1221 break; 1222 1223 case ACPI_EVENT_SLEEP_BUTTON: 1224 1225 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1226 return; 1227 1228 type = PSWITCH_TYPE_SLEEP; 1229 smpsw = &sc->sc_smpsw_sleep; 1230 break; 1231 1232 default: 1233 rv = AE_TYPE; 1234 goto fail; 1235 } 1236 1237 smpsw->smpsw_type = type; 1238 smpsw->smpsw_name = device_xname(sc->sc_dev); 1239 1240 if (sysmon_pswitch_register(smpsw) != 0) { 1241 rv = AE_ERROR; 1242 goto fail; 1243 } 1244 1245 rv = AcpiInstallFixedEventHandler(event, 1246 acpi_fixed_button_handler, smpsw); 1247 1248 if (ACPI_FAILURE(rv)) { 1249 sysmon_pswitch_unregister(smpsw); 1250 goto fail; 1251 } 1252 1253 aprint_debug_dev(sc->sc_dev, "fixed %s button present\n", 1254 (type != ACPI_EVENT_SLEEP_BUTTON) ? "power" : "sleep"); 1255 1256 return; 1257 1258 fail: 1259 aprint_error_dev(sc->sc_dev, "failed to register " 1260 "fixed event: %s\n", AcpiFormatException(rv)); 1261 } 1262 1263 static void 1264 acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1265 { 1266 struct sysmon_pswitch *smpsw; 1267 ACPI_STATUS rv; 1268 1269 switch (event) { 1270 1271 case ACPI_EVENT_POWER_BUTTON: 1272 smpsw = &sc->sc_smpsw_power; 1273 1274 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1275 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1276 return; 1277 } 1278 1279 break; 1280 1281 case ACPI_EVENT_SLEEP_BUTTON: 1282 smpsw = &sc->sc_smpsw_sleep; 1283 1284 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1285 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1286 return; 1287 } 1288 1289 break; 1290 1291 default: 1292 rv = AE_TYPE; 1293 goto fail; 1294 } 1295 1296 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1297 1298 if (ACPI_SUCCESS(rv)) { 1299 sysmon_pswitch_unregister(smpsw); 1300 return; 1301 } 1302 1303 fail: 1304 aprint_error_dev(sc->sc_dev, "failed to deregister " 1305 "fixed event: %s\n", AcpiFormatException(rv)); 1306 } 1307 1308 static uint32_t 1309 acpi_fixed_button_handler(void *context) 1310 { 1311 static const int handler = OSL_NOTIFY_HANDLER; 1312 struct sysmon_pswitch *smpsw = context; 1313 1314 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1315 1316 return ACPI_INTERRUPT_HANDLED; 1317 } 1318 1319 static void 1320 acpi_fixed_button_pressed(void *context) 1321 { 1322 struct sysmon_pswitch *smpsw = context; 1323 1324 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1325 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1326 "power" : "sleep")); 1327 1328 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1329 } 1330 1331 /* 1332 * Sleep. 1333 */ 1334 static void 1335 acpi_sleep_init(struct acpi_softc *sc) 1336 { 1337 uint8_t a, b, i; 1338 ACPI_STATUS rv; 1339 1340 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1341 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1342 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1343 1344 /* 1345 * Evaluate supported sleep states. 1346 */ 1347 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1348 1349 rv = AcpiGetSleepTypeData(i, &a, &b); 1350 1351 if (ACPI_SUCCESS(rv)) 1352 sc->sc_sleepstates |= __BIT(i); 1353 } 1354 } 1355 1356 void 1357 acpi_enter_sleep_state(struct acpi_softc *sc, int state) 1358 { 1359 ACPI_STATUS rv; 1360 int err; 1361 1362 if (state == sc->sc_sleepstate) 1363 return; 1364 1365 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1366 1367 switch (state) { 1368 1369 case ACPI_STATE_S0: 1370 sc->sc_sleepstate = ACPI_STATE_S0; 1371 return; 1372 1373 case ACPI_STATE_S1: 1374 case ACPI_STATE_S2: 1375 case ACPI_STATE_S3: 1376 case ACPI_STATE_S4: 1377 1378 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1379 aprint_error_dev(sc->sc_dev, "sleep state " 1380 "S%d is not available\n", state); 1381 return; 1382 } 1383 1384 /* 1385 * Evaluate the _TTS method. This should be done before 1386 * pmf_system_suspend(9) and the evaluation of _PTS. 1387 * We should also re-evaluate this once we return to 1388 * S0 or if we abort the sleep state transition in the 1389 * middle (see ACPI 3.0, section 7.3.6). In reality, 1390 * however, the _TTS method is seldom seen in the field. 1391 */ 1392 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1393 1394 if (ACPI_SUCCESS(rv)) 1395 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1396 1397 if (state != ACPI_STATE_S1 && 1398 pmf_system_suspend(PMF_Q_NONE) != true) { 1399 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1400 break; 1401 } 1402 1403 /* 1404 * This will evaluate the _PTS and _SST methods, 1405 * but unlike the documentation claims, not _GTS, 1406 * which is evaluated in AcpiEnterSleepState(). 1407 * This must be called with interrupts enabled. 1408 */ 1409 rv = AcpiEnterSleepStatePrep(state); 1410 1411 if (ACPI_FAILURE(rv)) { 1412 aprint_error_dev(sc->sc_dev, "failed to prepare " 1413 "S%d: %s\n", state, AcpiFormatException(rv)); 1414 break; 1415 } 1416 1417 /* 1418 * After the _PTS method has been evaluated, we can 1419 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1420 */ 1421 acpi_wakedev_commit(sc, state); 1422 1423 sc->sc_sleepstate = state; 1424 1425 if (state == ACPI_STATE_S1) { 1426 1427 /* Just enter the state. */ 1428 acpi_md_OsDisableInterrupt(); 1429 rv = AcpiEnterSleepState(state); 1430 1431 if (ACPI_FAILURE(rv)) 1432 aprint_error_dev(sc->sc_dev, "failed to " 1433 "enter S1: %s\n", AcpiFormatException(rv)); 1434 1435 (void)AcpiLeaveSleepState(state); 1436 1437 } else { 1438 1439 err = acpi_md_sleep(state); 1440 1441 if (state == ACPI_STATE_S4) 1442 AcpiEnable(); 1443 1444 pmf_system_bus_resume(PMF_Q_NONE); 1445 (void)AcpiLeaveSleepState(state); 1446 pmf_system_resume(PMF_Q_NONE); 1447 } 1448 1449 break; 1450 1451 case ACPI_STATE_S5: 1452 1453 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1454 1455 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1456 1457 if (ACPI_FAILURE(rv)) { 1458 aprint_error_dev(sc->sc_dev, "failed to prepare " 1459 "S%d: %s\n", state, AcpiFormatException(rv)); 1460 break; 1461 } 1462 1463 DELAY(1000000); 1464 1465 sc->sc_sleepstate = state; 1466 acpi_md_OsDisableInterrupt(); 1467 1468 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1469 1470 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1471 1472 break; 1473 } 1474 1475 sc->sc_sleepstate = ACPI_STATE_S0; 1476 1477 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1478 } 1479 1480 /* 1481 * Sysctl. 1482 */ 1483 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1484 { 1485 const struct sysctlnode *mnode, *rnode; 1486 int err; 1487 1488 err = sysctl_createv(clog, 0, NULL, &rnode, 1489 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", 1490 NULL, NULL, 0, NULL, 0, 1491 CTL_HW, CTL_EOL); 1492 1493 if (err != 0) 1494 return; 1495 1496 err = sysctl_createv(clog, 0, &rnode, &rnode, 1497 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1498 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1499 NULL, 0, NULL, 0, 1500 CTL_CREATE, CTL_EOL); 1501 1502 if (err != 0) 1503 return; 1504 1505 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1506 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1507 "root", SYSCTL_DESCR("ACPI root pointer"), 1508 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1509 CTL_CREATE, CTL_EOL); 1510 1511 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1512 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1513 "supported_states", SYSCTL_DESCR("Supported system states"), 1514 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1515 CTL_CREATE, CTL_EOL); 1516 1517 err = sysctl_createv(NULL, 0, NULL, &mnode, 1518 CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep", 1519 NULL, NULL, 0, NULL, 0, 1520 CTL_MACHDEP, CTL_EOL); 1521 1522 if (err == 0) { 1523 1524 (void)sysctl_createv(NULL, 0, &mnode, NULL, 1525 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1526 "sleep_state", SYSCTL_DESCR("System sleep state"), 1527 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1528 CTL_CREATE, CTL_EOL); 1529 } 1530 1531 err = sysctl_createv(clog, 0, &rnode, &rnode, 1532 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1533 "stat", SYSCTL_DESCR("ACPI statistics"), 1534 NULL, 0, NULL, 0, 1535 CTL_CREATE, CTL_EOL); 1536 1537 if (err != 0) 1538 return; 1539 1540 (void)sysctl_createv(clog, 0, &rnode, NULL, 1541 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1542 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1543 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1544 CTL_CREATE, CTL_EOL); 1545 1546 (void)sysctl_createv(clog, 0, &rnode, NULL, 1547 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1548 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1549 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1550 CTL_CREATE, CTL_EOL); 1551 1552 (void)sysctl_createv(clog, 0, &rnode, NULL, 1553 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1554 "fixed", SYSCTL_DESCR("Number of fixed events"), 1555 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1556 CTL_CREATE, CTL_EOL); 1557 1558 (void)sysctl_createv(clog, 0, &rnode, NULL, 1559 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1560 "method", SYSCTL_DESCR("Number of methods executed"), 1561 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1562 CTL_CREATE, CTL_EOL); 1563 1564 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1565 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1566 } 1567 1568 static int 1569 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1570 { 1571 struct sysctlnode node; 1572 uint64_t t; 1573 int err, i; 1574 1575 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1576 t += AcpiFixedEventCount[i]; 1577 1578 node = *rnode; 1579 node.sysctl_data = &t; 1580 1581 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1582 1583 if (err || newp == NULL) 1584 return err; 1585 1586 return 0; 1587 } 1588 1589 static int 1590 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1591 { 1592 struct acpi_softc *sc = acpi_softc; 1593 struct sysctlnode node; 1594 int err, t; 1595 1596 if (acpi_softc == NULL) 1597 return ENOSYS; 1598 1599 node = *rnode; 1600 t = sc->sc_sleepstate; 1601 node.sysctl_data = &t; 1602 1603 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1604 1605 if (err || newp == NULL) 1606 return err; 1607 1608 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1609 return EINVAL; 1610 1611 acpi_enter_sleep_state(sc, t); 1612 1613 return 0; 1614 } 1615 1616 static int 1617 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1618 { 1619 struct acpi_softc *sc = acpi_softc; 1620 struct sysctlnode node; 1621 char t[3 * 6 + 1]; 1622 int err; 1623 1624 if (acpi_softc == NULL) 1625 return ENOSYS; 1626 1627 (void)memset(t, '\0', sizeof(t)); 1628 1629 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1630 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1631 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1632 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1633 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1634 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1635 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1636 1637 node = *rnode; 1638 node.sysctl_data = &t; 1639 1640 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1641 1642 if (err || newp == NULL) 1643 return err; 1644 1645 return 0; 1646 } 1647 1648 /* 1649 * Tables. 1650 */ 1651 ACPI_PHYSICAL_ADDRESS 1652 acpi_OsGetRootPointer(void) 1653 { 1654 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1655 1656 /* 1657 * We let MD code handle this since there are multiple ways to do it: 1658 * 1659 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1660 * 1661 * IA-64: Use the EFI. 1662 */ 1663 PhysicalAddress = acpi_md_OsGetRootPointer(); 1664 1665 if (acpi_root_pointer == 0) 1666 acpi_root_pointer = PhysicalAddress; 1667 1668 return PhysicalAddress; 1669 } 1670 1671 static ACPI_TABLE_HEADER * 1672 acpi_map_rsdt(void) 1673 { 1674 ACPI_PHYSICAL_ADDRESS paddr; 1675 ACPI_TABLE_RSDP *rsdp; 1676 1677 paddr = AcpiOsGetRootPointer(); 1678 1679 if (paddr == 0) 1680 return NULL; 1681 1682 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1683 1684 if (rsdp == NULL) 1685 return NULL; 1686 1687 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1688 paddr = rsdp->XsdtPhysicalAddress; 1689 else 1690 paddr = rsdp->RsdtPhysicalAddress; 1691 1692 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1693 1694 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1695 } 1696 1697 static void 1698 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1699 { 1700 1701 if (rsdt == NULL) 1702 return; 1703 1704 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1705 } 1706 1707 /* 1708 * XXX: Refactor to be a generic function that maps tables. 1709 */ 1710 ACPI_STATUS 1711 acpi_madt_map(void) 1712 { 1713 ACPI_STATUS rv; 1714 1715 if (madt_header != NULL) 1716 return AE_ALREADY_EXISTS; 1717 1718 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); 1719 1720 if (ACPI_FAILURE(rv)) 1721 return rv; 1722 1723 return AE_OK; 1724 } 1725 1726 void 1727 acpi_madt_unmap(void) 1728 { 1729 madt_header = NULL; 1730 } 1731 1732 /* 1733 * XXX: Refactor to be a generic function that walks tables. 1734 */ 1735 void 1736 acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) 1737 { 1738 ACPI_SUBTABLE_HEADER *hdrp; 1739 char *madtend, *where; 1740 1741 madtend = (char *)madt_header + madt_header->Length; 1742 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); 1743 1744 while (where < madtend) { 1745 1746 hdrp = (ACPI_SUBTABLE_HEADER *)where; 1747 1748 if (ACPI_FAILURE(func(hdrp, aux))) 1749 break; 1750 1751 where += hdrp->Length; 1752 } 1753 } 1754 1755 /* 1756 * Miscellaneous. 1757 */ 1758 static bool 1759 acpi_is_scope(struct acpi_devnode *ad) 1760 { 1761 int i; 1762 1763 /* 1764 * Return true if the node is a root scope. 1765 */ 1766 if (ad->ad_parent == NULL) 1767 return false; 1768 1769 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1770 return false; 1771 1772 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1773 1774 if (acpi_scopes[i] == NULL) 1775 continue; 1776 1777 if (ad->ad_handle == acpi_scopes[i]) 1778 return true; 1779 } 1780 1781 return false; 1782 } 1783 1784 /* 1785 * ACPIVERBOSE. 1786 */ 1787 void 1788 acpi_load_verbose(void) 1789 { 1790 1791 if (acpi_verbose_loaded == 0) 1792 module_autoload("acpiverbose", MODULE_CLASS_MISC); 1793 } 1794 1795 void 1796 acpi_print_verbose_stub(struct acpi_softc *sc) 1797 { 1798 1799 acpi_load_verbose(); 1800 1801 if (acpi_verbose_loaded != 0) 1802 acpi_print_verbose(sc); 1803 } 1804 1805 void 1806 acpi_print_dev_stub(const char *pnpstr) 1807 { 1808 1809 acpi_load_verbose(); 1810 1811 if (acpi_verbose_loaded != 0) 1812 acpi_print_dev(pnpstr); 1813 } 1814
Indexes created Wed Oct 01 19:09:53 GMT 2025