acpi.c revision 1.222
1 /* $NetBSD: acpi.c,v 1.222 2010/10/24 07:53:04 jruoho Exp $ */ 2 3 /*- 4 * Copyright (c) 2003, 2007 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum of By Noon Software, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (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 1.222 2010/10/24 07:53:04 jruoho 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 acpi_softc = NULL; 266 initialized = false; 267 268 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 269 270 /* 271 * Start up ACPICA. 272 */ 273 #ifdef ACPI_DEBUGGER 274 if (acpi_dbgr & ACPI_DBGR_INIT) 275 acpi_osd_debugger(); 276 #endif 277 278 CTASSERT(TRUE == true); 279 CTASSERT(FALSE == false); 280 281 AcpiGbl_AllMethodsSerialized = false; 282 AcpiGbl_EnableInterpreterSlack = true; 283 284 rv = AcpiInitializeSubsystem(); 285 286 if (ACPI_SUCCESS(rv)) 287 initialized = true; 288 else { 289 func = "AcpiInitializeSubsystem()"; 290 goto fail; 291 } 292 293 /* 294 * Allocate space for RSDT/XSDT and DSDT, 295 * but allow resizing if more tables exist. 296 */ 297 rv = AcpiInitializeTables(NULL, 2, true); 298 299 if (ACPI_FAILURE(rv)) { 300 func = "AcpiInitializeTables()"; 301 goto fail; 302 } 303 304 #ifdef ACPI_DEBUGGER 305 if (acpi_dbgr & ACPI_DBGR_TABLES) 306 acpi_osd_debugger(); 307 #endif 308 309 rv = AcpiLoadTables(); 310 311 if (ACPI_FAILURE(rv)) { 312 func = "AcpiLoadTables()"; 313 goto fail; 314 } 315 316 rsdt = acpi_map_rsdt(); 317 318 if (rsdt == NULL) { 319 func = "acpi_map_rsdt()"; 320 rv = AE_ERROR; 321 goto fail; 322 } 323 324 if (acpi_force_load == 0 && (acpi_find_quirks() & ACPI_QUIRK_BROKEN)) { 325 aprint_normal("ACPI: BIOS is listed as broken:\n"); 326 aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 327 "AslId <%4.4s,%08x>\n", 328 rsdt->OemId, rsdt->OemTableId, 329 rsdt->OemRevision, 330 rsdt->AslCompilerId, 331 rsdt->AslCompilerRevision); 332 aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n"); 333 acpi_unmap_rsdt(rsdt); 334 AcpiTerminate(); 335 return 0; 336 } 337 if (acpi_force_load == 0 && (acpi_find_quirks() & ACPI_QUIRK_OLDBIOS)) { 338 aprint_normal("ACPI: BIOS is too old (%s). Set acpi_force_load to use.\n", 339 pmf_get_platform("firmware-date")); 340 acpi_unmap_rsdt(rsdt); 341 AcpiTerminate(); 342 return 0; 343 } 344 345 acpi_unmap_rsdt(rsdt); 346 347 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 348 349 if (ACPI_FAILURE(rv)) { 350 func = "AcpiEnableSubsystem()"; 351 goto fail; 352 } 353 354 /* 355 * Looks like we have ACPI! 356 */ 357 return 1; 358 359 fail: 360 KASSERT(rv != AE_OK); 361 KASSERT(func != NULL); 362 363 aprint_error("%s: failed to probe ACPI: %s\n", 364 func, AcpiFormatException(rv)); 365 366 if (initialized != false) 367 (void)AcpiTerminate(); 368 369 return 0; 370 } 371 372 void 373 acpi_disable(void) 374 { 375 376 if (acpi_softc == NULL) 377 return; 378 379 KASSERT(acpi_active != 0); 380 381 if (AcpiGbl_FADT.SmiCommand != 0) 382 AcpiDisable(); 383 } 384 385 int 386 acpi_check(device_t parent, const char *ifattr) 387 { 388 return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); 389 } 390 391 /* 392 * Autoconfiguration. 393 */ 394 static int 395 acpi_match(device_t parent, cfdata_t match, void *aux) 396 { 397 /* 398 * XXX: Nada; MD code has called acpi_probe(). 399 */ 400 return 1; 401 } 402 403 static int 404 acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 405 { 406 struct cfattach *ca; 407 408 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 409 410 return (ca == &acpi_ca); 411 } 412 413 static void 414 acpi_attach(device_t parent, device_t self, void *aux) 415 { 416 struct acpi_softc *sc = device_private(self); 417 struct acpibus_attach_args *aa = aux; 418 ACPI_TABLE_HEADER *rsdt; 419 ACPI_STATUS rv; 420 421 aprint_naive("\n"); 422 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 423 424 if (acpi_softc != NULL) 425 panic("%s: already attached", __func__); 426 427 rsdt = acpi_map_rsdt(); 428 429 if (rsdt == NULL) 430 aprint_error_dev(self, "X/RSDT: Not found\n"); 431 else { 432 aprint_verbose_dev(self, 433 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 434 rsdt->OemId, rsdt->OemTableId, 435 rsdt->OemRevision, 436 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 437 } 438 439 acpi_unmap_rsdt(rsdt); 440 441 sc->sc_dev = self; 442 sc->sc_root = NULL; 443 444 sc->sc_sleepstate = ACPI_STATE_S0; 445 sc->sc_quirks = acpi_find_quirks(); 446 447 sysmon_power_settype("acpi"); 448 449 sc->sc_iot = aa->aa_iot; 450 sc->sc_memt = aa->aa_memt; 451 sc->sc_pc = aa->aa_pc; 452 sc->sc_pciflags = aa->aa_pciflags; 453 sc->sc_ic = aa->aa_ic; 454 455 SIMPLEQ_INIT(&sc->ad_head); 456 457 acpi_softc = sc; 458 459 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) 460 aprint_error_dev(self, "couldn't establish power handler\n"); 461 462 /* 463 * Bring ACPI on-line. 464 */ 465 #ifdef ACPI_DEBUGGER 466 if (acpi_dbgr & ACPI_DBGR_ENABLE) 467 acpi_osd_debugger(); 468 #endif 469 470 #define ACPI_ENABLE_PHASE1 \ 471 (ACPI_NO_HANDLER_INIT | ACPI_NO_EVENT_INIT) 472 #define ACPI_ENABLE_PHASE2 \ 473 (ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE | \ 474 ACPI_NO_ADDRESS_SPACE_INIT) 475 476 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE1); 477 478 if (ACPI_FAILURE(rv)) 479 goto fail; 480 481 acpi_md_callback(); 482 483 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE2); 484 485 if (ACPI_FAILURE(rv)) 486 goto fail; 487 488 /* 489 * Early EC handler initialization if ECDT table is available. 490 */ 491 config_found_ia(self, "acpiecdtbus", aa, NULL); 492 493 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 494 495 if (ACPI_FAILURE(rv)) 496 goto fail; 497 498 /* 499 * Install global notify handlers. 500 */ 501 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 502 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 503 504 if (ACPI_FAILURE(rv)) 505 goto fail; 506 507 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 508 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 509 510 if (ACPI_FAILURE(rv)) 511 goto fail; 512 513 acpi_active = 1; 514 515 /* Show SCI interrupt. */ 516 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 517 AcpiGbl_FADT.SciInterrupt); 518 519 /* 520 * Install fixed-event handlers. 521 */ 522 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 523 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 524 525 acpitimer_init(sc); 526 527 #ifdef ACPI_DEBUGGER 528 if (acpi_dbgr & ACPI_DBGR_PROBE) 529 acpi_osd_debugger(); 530 #endif 531 532 /* 533 * Scan the namespace and build our device tree. 534 */ 535 acpi_build_tree(sc); 536 acpi_sleep_init(sc); 537 538 #ifdef ACPI_DEBUGGER 539 if (acpi_dbgr & ACPI_DBGR_RUNNING) 540 acpi_osd_debugger(); 541 #endif 542 543 #ifdef ACPI_DEBUG 544 acpi_debug_init(); 545 #endif 546 547 /* 548 * Print debug information. 549 */ 550 acpi_print_verbose(sc); 551 552 return; 553 554 fail: 555 aprint_error("%s: failed to initialize ACPI: %s\n", 556 __func__, AcpiFormatException(rv)); 557 } 558 559 /* 560 * XXX: This is incomplete. 561 */ 562 static int 563 acpi_detach(device_t self, int flags) 564 { 565 struct acpi_softc *sc = device_private(self); 566 ACPI_STATUS rv; 567 int rc; 568 569 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 570 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 571 572 if (ACPI_FAILURE(rv)) 573 return EBUSY; 574 575 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 576 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 577 578 if (ACPI_FAILURE(rv)) 579 return EBUSY; 580 581 if ((rc = config_detach_children(self, flags)) != 0) 582 return rc; 583 584 if ((rc = acpitimer_detach()) != 0) 585 return rc; 586 587 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 588 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 589 590 pmf_device_deregister(self); 591 592 acpi_softc = NULL; 593 594 return 0; 595 } 596 597 /* 598 * XXX: Need to reclaim any resources? Yes. 599 */ 600 static void 601 acpi_childdet(device_t self, device_t child) 602 { 603 struct acpi_softc *sc = device_private(self); 604 struct acpi_devnode *ad; 605 606 if (sc->sc_apmbus == child) 607 sc->sc_apmbus = NULL; 608 609 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 610 611 if (ad->ad_device == child) 612 ad->ad_device = NULL; 613 } 614 } 615 616 static bool 617 acpi_suspend(device_t dv, const pmf_qual_t *qual) 618 { 619 620 acpi_suspended = 1; 621 622 return true; 623 } 624 625 static bool 626 acpi_resume(device_t dv, const pmf_qual_t *qual) 627 { 628 629 acpi_suspended = 0; 630 631 return true; 632 } 633 634 /* 635 * Namespace scan. 636 */ 637 static void 638 acpi_build_tree(struct acpi_softc *sc) 639 { 640 struct acpi_walkcontext awc; 641 642 /* 643 * Get the root scope handles. 644 */ 645 KASSERT(__arraycount(acpi_scopes) == 4); 646 647 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 648 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 649 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 650 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 651 652 /* 653 * Make the root node. 654 */ 655 awc.aw_sc = sc; 656 awc.aw_parent = NULL; 657 658 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 659 660 KASSERT(sc->sc_root == NULL); 661 KASSERT(awc.aw_parent != NULL); 662 663 sc->sc_root = awc.aw_parent; 664 665 /* 666 * Build the internal namespace. 667 */ 668 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 669 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 670 671 /* 672 * Scan the internal namespace. 673 */ 674 (void)acpi_pcidev_scan(sc->sc_root); 675 (void)acpi_rescan(sc->sc_dev, NULL, NULL); 676 677 acpi_rescan_capabilities(sc); 678 } 679 680 static ACPI_STATUS 681 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 682 void *context, void **status) 683 { 684 struct acpi_walkcontext *awc = context; 685 struct acpi_softc *sc = awc->aw_sc; 686 struct acpi_devnode *ad; 687 ACPI_DEVICE_INFO *devinfo; 688 ACPI_OBJECT_TYPE type; 689 ACPI_NAME_UNION *anu; 690 ACPI_STATUS rv; 691 int clear, i; 692 693 rv = AcpiGetObjectInfo(handle, &devinfo); 694 695 if (ACPI_FAILURE(rv)) 696 return AE_OK; /* Do not terminate the walk. */ 697 698 type = devinfo->Type; 699 700 switch (type) { 701 702 case ACPI_TYPE_DEVICE: 703 704 #ifdef ACPI_ACTIVATE_DEV 705 acpi_activate_device(handle, &devinfo); 706 #endif 707 708 case ACPI_TYPE_PROCESSOR: 709 case ACPI_TYPE_THERMAL: 710 case ACPI_TYPE_POWER: 711 712 ad = malloc(sizeof(*ad), M_ACPI, M_NOWAIT | M_ZERO); 713 714 if (ad == NULL) 715 return AE_NO_MEMORY; 716 717 ad->ad_device = NULL; 718 ad->ad_notify = NULL; 719 ad->ad_pciinfo = NULL; 720 721 ad->ad_type = type; 722 ad->ad_handle = handle; 723 ad->ad_devinfo = devinfo; 724 725 ad->ad_root = sc->sc_dev; 726 ad->ad_parent = awc->aw_parent; 727 728 anu = (ACPI_NAME_UNION *)&devinfo->Name; 729 ad->ad_name[4] = '\0'; 730 731 for (i = 3, clear = 0; i >= 0; i--) { 732 733 if (clear == 0 && anu->Ascii[i] == '_') 734 ad->ad_name[i] = '\0'; 735 else { 736 ad->ad_name[i] = anu->Ascii[i]; 737 clear = 1; 738 } 739 } 740 741 if (ad->ad_name[0] == '\0') 742 ad->ad_name[0] = '_'; 743 744 SIMPLEQ_INIT(&ad->ad_child_head); 745 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 746 747 acpi_set_node(ad); 748 749 if (ad->ad_parent != NULL) { 750 751 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 752 ad, ad_child_list); 753 } 754 755 awc->aw_parent = ad; 756 } 757 758 return AE_OK; 759 } 760 761 static ACPI_STATUS 762 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 763 void *context, void **status) 764 { 765 struct acpi_walkcontext *awc = context; 766 767 KASSERT(awc != NULL); 768 KASSERT(awc->aw_parent != NULL); 769 770 if (handle == awc->aw_parent->ad_handle) 771 awc->aw_parent = awc->aw_parent->ad_parent; 772 773 return AE_OK; 774 } 775 776 #ifdef ACPI_ACTIVATE_DEV 777 static void 778 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 779 { 780 static const int valid = ACPI_VALID_STA | ACPI_VALID_HID; 781 ACPI_DEVICE_INFO *newdi; 782 ACPI_STATUS rv; 783 uint32_t old; 784 785 /* 786 * If the device is valid and present, 787 * but not enabled, try to activate it. 788 */ 789 if (((*di)->Valid & valid) != valid) 790 return; 791 792 old = (*di)->CurrentStatus; 793 794 if ((old & (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED)) != 795 ACPI_STA_DEVICE_PRESENT) 796 return; 797 798 rv = acpi_allocate_resources(handle); 799 800 if (ACPI_FAILURE(rv)) 801 goto fail; 802 803 rv = AcpiGetObjectInfo(handle, &newdi); 804 805 if (ACPI_FAILURE(rv)) 806 goto fail; 807 808 ACPI_FREE(*di); 809 *di = newdi; 810 811 aprint_verbose_dev(acpi_softc->sc_dev, 812 "%s activated, STA 0x%08X -> STA 0x%08X\n", 813 (*di)->HardwareId.String, old, (*di)->CurrentStatus); 814 815 return; 816 817 fail: 818 aprint_error_dev(acpi_softc->sc_dev, "failed to " 819 "activate %s\n", (*di)->HardwareId.String); 820 } 821 822 /* 823 * XXX: This very incomplete. 824 */ 825 ACPI_STATUS 826 acpi_allocate_resources(ACPI_HANDLE handle) 827 { 828 ACPI_BUFFER bufp, bufc, bufn; 829 ACPI_RESOURCE *resp, *resc, *resn; 830 ACPI_RESOURCE_IRQ *irq; 831 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 832 ACPI_STATUS rv; 833 uint delta; 834 835 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 836 if (ACPI_FAILURE(rv)) 837 goto out; 838 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 839 if (ACPI_FAILURE(rv)) { 840 goto out1; 841 } 842 843 bufn.Length = 1000; 844 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 845 resp = bufp.Pointer; 846 resc = bufc.Pointer; 847 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 848 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 849 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 850 resp = ACPI_NEXT_RESOURCE(resp); 851 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 852 break; 853 /* Found identical Id */ 854 resn->Type = resc->Type; 855 switch (resc->Type) { 856 case ACPI_RESOURCE_TYPE_IRQ: 857 memcpy(&resn->Data, &resp->Data, 858 sizeof(ACPI_RESOURCE_IRQ)); 859 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 860 irq->Interrupts[0] = 861 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 862 Interrupts[irq->InterruptCount-1]; 863 irq->InterruptCount = 1; 864 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 865 break; 866 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 867 memcpy(&resn->Data, &resp->Data, 868 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 869 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 870 #if 0 871 /* 872 * XXX: Not duplicating the interrupt logic above 873 * because its not clear what it accomplishes. 874 */ 875 xirq->Interrupts[0] = 876 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 877 Interrupts[irq->NumberOfInterrupts-1]; 878 xirq->NumberOfInterrupts = 1; 879 #endif 880 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 881 break; 882 case ACPI_RESOURCE_TYPE_IO: 883 memcpy(&resn->Data, &resp->Data, 884 sizeof(ACPI_RESOURCE_IO)); 885 resn->Length = resp->Length; 886 break; 887 default: 888 aprint_error_dev(acpi_softc->sc_dev, 889 "%s: invalid type %u\n", __func__, resc->Type); 890 rv = AE_BAD_DATA; 891 goto out2; 892 } 893 resc = ACPI_NEXT_RESOURCE(resc); 894 resn = ACPI_NEXT_RESOURCE(resn); 895 resp = ACPI_NEXT_RESOURCE(resp); 896 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 897 if (delta >= 898 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 899 bufn.Length *= 2; 900 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 901 M_ACPI, M_WAITOK); 902 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 903 delta); 904 } 905 } 906 907 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 908 aprint_error_dev(acpi_softc->sc_dev, 909 "%s: resc not exhausted\n", __func__); 910 rv = AE_BAD_DATA; 911 goto out3; 912 } 913 914 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 915 rv = AcpiSetCurrentResources(handle, &bufn); 916 917 if (ACPI_FAILURE(rv)) 918 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 919 "resources: %s\n", __func__, AcpiFormatException(rv)); 920 921 out3: 922 free(bufn.Pointer, M_ACPI); 923 out2: 924 ACPI_FREE(bufc.Pointer); 925 out1: 926 ACPI_FREE(bufp.Pointer); 927 out: 928 return rv; 929 } 930 #endif /* ACPI_ACTIVATE_DEV */ 931 932 /* 933 * Device attachment. 934 */ 935 static int 936 acpi_rescan(device_t self, const char *ifattr, const int *locators) 937 { 938 struct acpi_softc *sc = device_private(self); 939 940 if (ifattr_match(ifattr, "acpinodebus")) 941 acpi_rescan_nodes(sc); 942 943 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 944 sc->sc_apmbus = config_found_ia(sc->sc_dev, 945 "acpiapmbus", NULL, NULL); 946 947 return 0; 948 } 949 950 static void 951 acpi_rescan_nodes(struct acpi_softc *sc) 952 { 953 struct acpi_attach_args aa; 954 struct acpi_devnode *ad; 955 ACPI_DEVICE_INFO *di; 956 957 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 958 959 if (ad->ad_device != NULL) 960 continue; 961 962 /* 963 * There is a bug in ACPICA: it defines the type 964 * of the scopes incorrectly for its own reasons. 965 */ 966 if (acpi_is_scope(ad) != false) 967 continue; 968 969 di = ad->ad_devinfo; 970 971 /* 972 * We only attach devices which are present, enabled, and 973 * functioning properly. However, if a device is enabled, 974 * it is decoding resources and we should claim these, 975 * if possible. This requires changes to bus_space(9). 976 * Note: there is a possible race condition, because _STA 977 * may have changed since di->CurrentStatus was set. 978 */ 979 if (di->Type == ACPI_TYPE_DEVICE) { 980 981 if ((di->Valid & ACPI_VALID_STA) != 0 && 982 (di->CurrentStatus & ACPI_STA_OK) != ACPI_STA_OK) 983 continue; 984 } 985 986 /* 987 * Handled internally. 988 */ 989 if (di->Type == ACPI_TYPE_POWER) 990 continue; 991 992 /* 993 * Skip ignored HIDs. 994 */ 995 if (acpi_match_hid(di, acpi_ignored_ids)) 996 continue; 997 998 aa.aa_node = ad; 999 aa.aa_iot = sc->sc_iot; 1000 aa.aa_memt = sc->sc_memt; 1001 aa.aa_pc = sc->sc_pc; 1002 aa.aa_pciflags = sc->sc_pciflags; 1003 aa.aa_ic = sc->sc_ic; 1004 1005 ad->ad_device = config_found_ia(sc->sc_dev, 1006 "acpinodebus", &aa, acpi_print); 1007 } 1008 } 1009 1010 static void 1011 acpi_rescan_capabilities(struct acpi_softc *sc) 1012 { 1013 struct acpi_devnode *ad; 1014 ACPI_HANDLE tmp; 1015 ACPI_STATUS rv; 1016 1017 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1018 1019 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 1020 continue; 1021 1022 /* 1023 * Scan power resource capabilities. 1024 * 1025 * If any power states are supported, 1026 * at least _PR0 and _PR3 must be present. 1027 */ 1028 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 1029 1030 if (ACPI_SUCCESS(rv)) { 1031 ad->ad_flags |= ACPI_DEVICE_POWER; 1032 acpi_power_add(ad); 1033 } 1034 1035 /* 1036 * Scan wake-up capabilities. 1037 */ 1038 rv = AcpiGetHandle(ad->ad_handle, "_PRW", &tmp); 1039 1040 if (ACPI_SUCCESS(rv)) { 1041 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 1042 acpi_wakedev_add(ad); 1043 } 1044 } 1045 } 1046 1047 static int 1048 acpi_print(void *aux, const char *pnp) 1049 { 1050 struct acpi_attach_args *aa = aux; 1051 ACPI_STATUS rv; 1052 1053 if (pnp) { 1054 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1055 char *pnpstr = 1056 aa->aa_node->ad_devinfo->HardwareId.String; 1057 ACPI_BUFFER buf; 1058 1059 aprint_normal("%s (%s) ", aa->aa_node->ad_name, 1060 pnpstr); 1061 1062 rv = acpi_eval_struct(aa->aa_node->ad_handle, 1063 "_STR", &buf); 1064 if (ACPI_SUCCESS(rv)) { 1065 ACPI_OBJECT *obj = buf.Pointer; 1066 switch (obj->Type) { 1067 case ACPI_TYPE_STRING: 1068 aprint_normal("[%s] ", obj->String.Pointer); 1069 break; 1070 case ACPI_TYPE_BUFFER: 1071 aprint_normal("buffer %p ", obj->Buffer.Pointer); 1072 break; 1073 default: 1074 aprint_normal("type %u ",obj->Type); 1075 break; 1076 } 1077 ACPI_FREE(buf.Pointer); 1078 } 1079 else 1080 acpi_print_dev(pnpstr); 1081 1082 aprint_normal("at %s", pnp); 1083 } else if (aa->aa_node->ad_devinfo->Type != ACPI_TYPE_DEVICE) { 1084 aprint_normal("%s (ACPI Object Type '%s' " 1085 "[0x%02x]) ", aa->aa_node->ad_name, 1086 AcpiUtGetTypeName(aa->aa_node->ad_devinfo->Type), 1087 aa->aa_node->ad_devinfo->Type); 1088 aprint_normal("at %s", pnp); 1089 } else 1090 return 0; 1091 } else { 1092 aprint_normal(" (%s", aa->aa_node->ad_name); 1093 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1094 aprint_normal(", %s", aa->aa_node->ad_devinfo->HardwareId.String); 1095 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_UID) { 1096 const char *uid; 1097 1098 uid = aa->aa_node->ad_devinfo->UniqueId.String; 1099 if (uid[0] == '\0') 1100 uid = "<null>"; 1101 aprint_normal("-%s", uid); 1102 } 1103 } 1104 aprint_normal(")"); 1105 } 1106 1107 return UNCONF; 1108 } 1109 1110 /* 1111 * Notify. 1112 */ 1113 static void 1114 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1115 { 1116 struct acpi_softc *sc = acpi_softc; 1117 struct acpi_devnode *ad; 1118 1119 KASSERT(sc != NULL); 1120 KASSERT(aux == NULL); 1121 KASSERT(acpi_active != 0); 1122 1123 if (acpi_suspended != 0) 1124 return; 1125 1126 /* 1127 * System: 0x00 - 0x7F. 1128 * Device: 0x80 - 0xFF. 1129 */ 1130 switch (event) { 1131 1132 case ACPI_NOTIFY_BUS_CHECK: 1133 case ACPI_NOTIFY_DEVICE_CHECK: 1134 case ACPI_NOTIFY_DEVICE_WAKE: 1135 case ACPI_NOTIFY_EJECT_REQUEST: 1136 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1137 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1138 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1139 case ACPI_NOTIFY_POWER_FAULT: 1140 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1141 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1142 case ACPI_NOTIFY_RESERVED: 1143 case ACPI_NOTIFY_LOCALITY_UPDATE: 1144 break; 1145 } 1146 1147 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1148 "%s (%p)\n", event, acpi_name(handle), handle)); 1149 1150 /* 1151 * We deliver notifications only to drivers 1152 * that have been succesfully attached and 1153 * that have registered a handler with us. 1154 * The opaque pointer is always the device_t. 1155 */ 1156 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1157 1158 if (ad->ad_device == NULL) 1159 continue; 1160 1161 if (ad->ad_notify == NULL) 1162 continue; 1163 1164 if (ad->ad_handle != handle) 1165 continue; 1166 1167 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1168 1169 return; 1170 } 1171 1172 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1173 "for %s (%p)\n", event, acpi_name(handle), handle); 1174 } 1175 1176 bool 1177 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1178 { 1179 struct acpi_softc *sc = acpi_softc; 1180 1181 KASSERT(sc != NULL); 1182 KASSERT(acpi_active != 0); 1183 1184 if (acpi_suspended != 0) 1185 goto fail; 1186 1187 if (ad == NULL || notify == NULL) 1188 goto fail; 1189 1190 ad->ad_notify = notify; 1191 1192 return true; 1193 1194 fail: 1195 aprint_error_dev(sc->sc_dev, "failed to register notify " 1196 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1197 1198 return false; 1199 } 1200 1201 void 1202 acpi_deregister_notify(struct acpi_devnode *ad) 1203 { 1204 1205 ad->ad_notify = NULL; 1206 } 1207 1208 /* 1209 * Fixed buttons. 1210 */ 1211 static void 1212 acpi_register_fixed_button(struct acpi_softc *sc, int event) 1213 { 1214 struct sysmon_pswitch *smpsw; 1215 ACPI_STATUS rv; 1216 int type; 1217 1218 switch (event) { 1219 1220 case ACPI_EVENT_POWER_BUTTON: 1221 1222 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1223 return; 1224 1225 type = PSWITCH_TYPE_POWER; 1226 smpsw = &sc->sc_smpsw_power; 1227 break; 1228 1229 case ACPI_EVENT_SLEEP_BUTTON: 1230 1231 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1232 return; 1233 1234 type = PSWITCH_TYPE_SLEEP; 1235 smpsw = &sc->sc_smpsw_sleep; 1236 break; 1237 1238 default: 1239 rv = AE_TYPE; 1240 goto fail; 1241 } 1242 1243 smpsw->smpsw_type = type; 1244 smpsw->smpsw_name = device_xname(sc->sc_dev); 1245 1246 if (sysmon_pswitch_register(smpsw) != 0) { 1247 rv = AE_ERROR; 1248 goto fail; 1249 } 1250 1251 rv = AcpiInstallFixedEventHandler(event, 1252 acpi_fixed_button_handler, smpsw); 1253 1254 if (ACPI_FAILURE(rv)) { 1255 sysmon_pswitch_unregister(smpsw); 1256 goto fail; 1257 } 1258 1259 aprint_debug_dev(sc->sc_dev, "fixed %s button present\n", 1260 (type != ACPI_EVENT_SLEEP_BUTTON) ? "power" : "sleep"); 1261 1262 return; 1263 1264 fail: 1265 aprint_error_dev(sc->sc_dev, "failed to register " 1266 "fixed event: %s\n", AcpiFormatException(rv)); 1267 } 1268 1269 static void 1270 acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1271 { 1272 struct sysmon_pswitch *smpsw; 1273 ACPI_STATUS rv; 1274 1275 switch (event) { 1276 1277 case ACPI_EVENT_POWER_BUTTON: 1278 smpsw = &sc->sc_smpsw_power; 1279 1280 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1281 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1282 return; 1283 } 1284 1285 break; 1286 1287 case ACPI_EVENT_SLEEP_BUTTON: 1288 smpsw = &sc->sc_smpsw_sleep; 1289 1290 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1291 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1292 return; 1293 } 1294 1295 break; 1296 1297 default: 1298 rv = AE_TYPE; 1299 goto fail; 1300 } 1301 1302 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1303 1304 if (ACPI_SUCCESS(rv)) { 1305 sysmon_pswitch_unregister(smpsw); 1306 return; 1307 } 1308 1309 fail: 1310 aprint_error_dev(sc->sc_dev, "failed to deregister " 1311 "fixed event: %s\n", AcpiFormatException(rv)); 1312 } 1313 1314 static uint32_t 1315 acpi_fixed_button_handler(void *context) 1316 { 1317 static const int handler = OSL_NOTIFY_HANDLER; 1318 struct sysmon_pswitch *smpsw = context; 1319 1320 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1321 1322 return ACPI_INTERRUPT_HANDLED; 1323 } 1324 1325 static void 1326 acpi_fixed_button_pressed(void *context) 1327 { 1328 struct sysmon_pswitch *smpsw = context; 1329 1330 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1331 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1332 "power" : "sleep")); 1333 1334 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1335 } 1336 1337 /* 1338 * Sleep. 1339 */ 1340 static void 1341 acpi_sleep_init(struct acpi_softc *sc) 1342 { 1343 uint8_t a, b, i; 1344 ACPI_STATUS rv; 1345 1346 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1347 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1348 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1349 1350 /* 1351 * Evaluate supported sleep states. 1352 */ 1353 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1354 1355 rv = AcpiGetSleepTypeData(i, &a, &b); 1356 1357 if (ACPI_SUCCESS(rv)) 1358 sc->sc_sleepstates |= __BIT(i); 1359 } 1360 } 1361 1362 void 1363 acpi_enter_sleep_state(int state) 1364 { 1365 struct acpi_softc *sc = acpi_softc; 1366 ACPI_STATUS rv; 1367 int err; 1368 1369 if (acpi_softc == NULL) 1370 return; 1371 1372 if (state == sc->sc_sleepstate) 1373 return; 1374 1375 if (state < ACPI_STATE_S0 || state > ACPI_STATE_S5) 1376 return; 1377 1378 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1379 1380 switch (state) { 1381 1382 case ACPI_STATE_S0: 1383 sc->sc_sleepstate = ACPI_STATE_S0; 1384 return; 1385 1386 case ACPI_STATE_S1: 1387 case ACPI_STATE_S2: 1388 case ACPI_STATE_S3: 1389 case ACPI_STATE_S4: 1390 1391 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1392 aprint_error_dev(sc->sc_dev, "sleep state " 1393 "S%d is not available\n", state); 1394 return; 1395 } 1396 1397 /* 1398 * Evaluate the _TTS method. This should be done before 1399 * pmf_system_suspend(9) and the evaluation of _PTS. 1400 * We should also re-evaluate this once we return to 1401 * S0 or if we abort the sleep state transition in the 1402 * middle (see ACPI 3.0, section 7.3.6). In reality, 1403 * however, the _TTS method is seldom seen in the field. 1404 */ 1405 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1406 1407 if (ACPI_SUCCESS(rv)) 1408 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1409 1410 if (state != ACPI_STATE_S1 && 1411 pmf_system_suspend(PMF_Q_NONE) != true) { 1412 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1413 break; 1414 } 1415 1416 /* 1417 * This will evaluate the _PTS and _SST methods, 1418 * but unlike the documentation claims, not _GTS, 1419 * which is evaluated in AcpiEnterSleepState(). 1420 * This must be called with interrupts enabled. 1421 */ 1422 rv = AcpiEnterSleepStatePrep(state); 1423 1424 if (ACPI_FAILURE(rv)) { 1425 aprint_error_dev(sc->sc_dev, "failed to prepare " 1426 "S%d: %s\n", state, AcpiFormatException(rv)); 1427 break; 1428 } 1429 1430 /* 1431 * After the _PTS method has been evaluated, we can 1432 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1433 */ 1434 acpi_wakedev_commit(sc, state); 1435 1436 sc->sc_sleepstate = state; 1437 1438 if (state == ACPI_STATE_S1) { 1439 1440 /* Just enter the state. */ 1441 acpi_md_OsDisableInterrupt(); 1442 rv = AcpiEnterSleepState(state); 1443 1444 if (ACPI_FAILURE(rv)) 1445 aprint_error_dev(sc->sc_dev, "failed to " 1446 "enter S1: %s\n", AcpiFormatException(rv)); 1447 1448 (void)AcpiLeaveSleepState(state); 1449 1450 } else { 1451 1452 err = acpi_md_sleep(state); 1453 1454 if (state == ACPI_STATE_S4) 1455 AcpiEnable(); 1456 1457 pmf_system_bus_resume(PMF_Q_NONE); 1458 (void)AcpiLeaveSleepState(state); 1459 pmf_system_resume(PMF_Q_NONE); 1460 } 1461 1462 break; 1463 1464 case ACPI_STATE_S5: 1465 1466 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1467 1468 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1469 1470 if (ACPI_FAILURE(rv)) { 1471 aprint_error_dev(sc->sc_dev, "failed to prepare " 1472 "S%d: %s\n", state, AcpiFormatException(rv)); 1473 break; 1474 } 1475 1476 DELAY(1000000); 1477 1478 sc->sc_sleepstate = state; 1479 acpi_md_OsDisableInterrupt(); 1480 1481 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1482 1483 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1484 1485 break; 1486 } 1487 1488 sc->sc_sleepstate = ACPI_STATE_S0; 1489 1490 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1491 } 1492 1493 /* 1494 * Sysctl. 1495 */ 1496 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1497 { 1498 const struct sysctlnode *mnode, *rnode; 1499 int err; 1500 1501 err = sysctl_createv(clog, 0, NULL, &rnode, 1502 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", 1503 NULL, NULL, 0, NULL, 0, 1504 CTL_HW, CTL_EOL); 1505 1506 if (err != 0) 1507 return; 1508 1509 err = sysctl_createv(clog, 0, &rnode, &rnode, 1510 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1511 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1512 NULL, 0, NULL, 0, 1513 CTL_CREATE, CTL_EOL); 1514 1515 if (err != 0) 1516 return; 1517 1518 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1519 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1520 "root", SYSCTL_DESCR("ACPI root pointer"), 1521 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1522 CTL_CREATE, CTL_EOL); 1523 1524 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1525 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1526 "supported_states", SYSCTL_DESCR("Supported system states"), 1527 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1528 CTL_CREATE, CTL_EOL); 1529 1530 err = sysctl_createv(NULL, 0, NULL, &mnode, 1531 CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep", 1532 NULL, NULL, 0, NULL, 0, 1533 CTL_MACHDEP, CTL_EOL); 1534 1535 if (err == 0) { 1536 1537 (void)sysctl_createv(NULL, 0, &mnode, NULL, 1538 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1539 "sleep_state", SYSCTL_DESCR("System sleep state"), 1540 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1541 CTL_CREATE, CTL_EOL); 1542 } 1543 1544 err = sysctl_createv(clog, 0, &rnode, &rnode, 1545 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1546 "stat", SYSCTL_DESCR("ACPI statistics"), 1547 NULL, 0, NULL, 0, 1548 CTL_CREATE, CTL_EOL); 1549 1550 if (err != 0) 1551 return; 1552 1553 (void)sysctl_createv(clog, 0, &rnode, NULL, 1554 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1555 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1556 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1557 CTL_CREATE, CTL_EOL); 1558 1559 (void)sysctl_createv(clog, 0, &rnode, NULL, 1560 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1561 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1562 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1563 CTL_CREATE, CTL_EOL); 1564 1565 (void)sysctl_createv(clog, 0, &rnode, NULL, 1566 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1567 "fixed", SYSCTL_DESCR("Number of fixed events"), 1568 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1569 CTL_CREATE, CTL_EOL); 1570 1571 (void)sysctl_createv(clog, 0, &rnode, NULL, 1572 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1573 "method", SYSCTL_DESCR("Number of methods executed"), 1574 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1575 CTL_CREATE, CTL_EOL); 1576 1577 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1578 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1579 } 1580 1581 static int 1582 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1583 { 1584 struct sysctlnode node; 1585 uint64_t t; 1586 int err, i; 1587 1588 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1589 t += AcpiFixedEventCount[i]; 1590 1591 node = *rnode; 1592 node.sysctl_data = &t; 1593 1594 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1595 1596 if (err || newp == NULL) 1597 return err; 1598 1599 return 0; 1600 } 1601 1602 static int 1603 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1604 { 1605 struct acpi_softc *sc = acpi_softc; 1606 struct sysctlnode node; 1607 int err, t; 1608 1609 if (acpi_softc == NULL) 1610 return ENOSYS; 1611 1612 node = *rnode; 1613 t = sc->sc_sleepstate; 1614 node.sysctl_data = &t; 1615 1616 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1617 1618 if (err || newp == NULL) 1619 return err; 1620 1621 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1622 return EINVAL; 1623 1624 acpi_enter_sleep_state(t); 1625 1626 return 0; 1627 } 1628 1629 static int 1630 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1631 { 1632 struct acpi_softc *sc = acpi_softc; 1633 struct sysctlnode node; 1634 char t[3 * 6 + 1]; 1635 int err; 1636 1637 if (acpi_softc == NULL) 1638 return ENOSYS; 1639 1640 (void)memset(t, '\0', sizeof(t)); 1641 1642 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1643 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1644 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1645 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1646 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1647 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1648 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1649 1650 node = *rnode; 1651 node.sysctl_data = &t; 1652 1653 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1654 1655 if (err || newp == NULL) 1656 return err; 1657 1658 return 0; 1659 } 1660 1661 /* 1662 * Tables. 1663 */ 1664 ACPI_PHYSICAL_ADDRESS 1665 acpi_OsGetRootPointer(void) 1666 { 1667 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1668 1669 /* 1670 * We let MD code handle this since there are multiple ways to do it: 1671 * 1672 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1673 * 1674 * IA-64: Use the EFI. 1675 */ 1676 PhysicalAddress = acpi_md_OsGetRootPointer(); 1677 1678 if (acpi_root_pointer == 0) 1679 acpi_root_pointer = PhysicalAddress; 1680 1681 return PhysicalAddress; 1682 } 1683 1684 static ACPI_TABLE_HEADER * 1685 acpi_map_rsdt(void) 1686 { 1687 ACPI_PHYSICAL_ADDRESS paddr; 1688 ACPI_TABLE_RSDP *rsdp; 1689 1690 paddr = AcpiOsGetRootPointer(); 1691 1692 if (paddr == 0) 1693 return NULL; 1694 1695 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1696 1697 if (rsdp == NULL) 1698 return NULL; 1699 1700 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1701 paddr = rsdp->XsdtPhysicalAddress; 1702 else 1703 paddr = rsdp->RsdtPhysicalAddress; 1704 1705 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1706 1707 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1708 } 1709 1710 static void 1711 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1712 { 1713 1714 if (rsdt == NULL) 1715 return; 1716 1717 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1718 } 1719 1720 /* 1721 * XXX: Refactor to be a generic function that maps tables. 1722 */ 1723 ACPI_STATUS 1724 acpi_madt_map(void) 1725 { 1726 ACPI_STATUS rv; 1727 1728 if (madt_header != NULL) 1729 return AE_ALREADY_EXISTS; 1730 1731 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); 1732 1733 if (ACPI_FAILURE(rv)) 1734 return rv; 1735 1736 return AE_OK; 1737 } 1738 1739 void 1740 acpi_madt_unmap(void) 1741 { 1742 madt_header = NULL; 1743 } 1744 1745 /* 1746 * XXX: Refactor to be a generic function that walks tables. 1747 */ 1748 void 1749 acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) 1750 { 1751 ACPI_SUBTABLE_HEADER *hdrp; 1752 char *madtend, *where; 1753 1754 madtend = (char *)madt_header + madt_header->Length; 1755 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); 1756 1757 while (where < madtend) { 1758 1759 hdrp = (ACPI_SUBTABLE_HEADER *)where; 1760 1761 if (ACPI_FAILURE(func(hdrp, aux))) 1762 break; 1763 1764 where += hdrp->Length; 1765 } 1766 } 1767 1768 /* 1769 * Miscellaneous. 1770 */ 1771 static bool 1772 acpi_is_scope(struct acpi_devnode *ad) 1773 { 1774 int i; 1775 1776 /* 1777 * Return true if the node is a root scope. 1778 */ 1779 if (ad->ad_parent == NULL) 1780 return false; 1781 1782 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1783 return false; 1784 1785 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1786 1787 if (acpi_scopes[i] == NULL) 1788 continue; 1789 1790 if (ad->ad_handle == acpi_scopes[i]) 1791 return true; 1792 } 1793 1794 return false; 1795 } 1796 1797 /* 1798 * ACPIVERBOSE. 1799 */ 1800 void 1801 acpi_load_verbose(void) 1802 { 1803 1804 if (acpi_verbose_loaded == 0) 1805 module_autoload("acpiverbose", MODULE_CLASS_MISC); 1806 } 1807 1808 void 1809 acpi_print_verbose_stub(struct acpi_softc *sc) 1810 { 1811 1812 acpi_load_verbose(); 1813 1814 if (acpi_verbose_loaded != 0) 1815 acpi_print_verbose(sc); 1816 } 1817 1818 void 1819 acpi_print_dev_stub(const char *pnpstr) 1820 { 1821 1822 acpi_load_verbose(); 1823 1824 if (acpi_verbose_loaded != 0) 1825 acpi_print_dev(pnpstr); 1826 } 1827
Indexes created Tue Sep 23 13:09:54 GMT 2025