1 /* $NetBSD: acpi.c,v 1.235 2011/02/15 20:24:11 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 1.235 2011/02/15 20:24:11 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 * The acpi_active variable is set when the ACPI subsystem is active. 153 * Machine-dependent code may wish to skip other steps (such as attaching 154 * subsystems that ACPI supercedes) when ACPI is active. 155 */ 156 uint32_t acpi_cpus = 0; 157 int acpi_active = 0; 158 int acpi_suspended = 0; 159 int acpi_force_load = 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 /* 196 * Devices that should be attached early. 197 */ 198 static const char * const acpi_early_ids[] = { 199 "PNP0C09", /* acpiec(4) */ 200 NULL 201 }; 202 203 static int acpi_match(device_t, cfdata_t, void *); 204 static int acpi_submatch(device_t, cfdata_t, const int *, void *); 205 static void acpi_attach(device_t, device_t, void *); 206 static int acpi_detach(device_t, int); 207 static void acpi_childdet(device_t, device_t); 208 static bool acpi_suspend(device_t, const pmf_qual_t *); 209 static bool acpi_resume(device_t, const pmf_qual_t *); 210 211 static void acpi_build_tree(struct acpi_softc *); 212 static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, 213 void *, void **); 214 static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t, 215 void *, void **); 216 static void acpi_make_name(struct acpi_devnode *, uint32_t); 217 218 static int acpi_rescan(device_t, const char *, const int *); 219 static void acpi_rescan_early(struct acpi_softc *); 220 static void acpi_rescan_nodes(struct acpi_softc *); 221 static void acpi_rescan_capabilities(device_t); 222 static int acpi_print(void *aux, const char *); 223 224 static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); 225 226 static void acpi_register_fixed_button(struct acpi_softc *, int); 227 static void acpi_deregister_fixed_button(struct acpi_softc *, int); 228 static uint32_t acpi_fixed_button_handler(void *); 229 static void acpi_fixed_button_pressed(void *); 230 231 static void acpi_sleep_init(struct acpi_softc *); 232 233 static int sysctl_hw_acpi_fixedstats(SYSCTLFN_PROTO); 234 static int sysctl_hw_acpi_sleepstate(SYSCTLFN_PROTO); 235 static int sysctl_hw_acpi_sleepstates(SYSCTLFN_PROTO); 236 237 static bool acpi_is_scope(struct acpi_devnode *); 238 static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 239 static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 240 241 void acpi_print_verbose_stub(struct acpi_softc *); 242 void acpi_print_dev_stub(const char *); 243 244 static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **); 245 ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE); 246 247 void (*acpi_print_verbose)(struct acpi_softc *) = acpi_print_verbose_stub; 248 void (*acpi_print_dev)(const char *) = acpi_print_dev_stub; 249 250 CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 251 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 252 253 /* 254 * Probe for ACPI support. 255 * 256 * This is called by the machine-dependent ACPI front-end. 257 * Note: this is not an autoconfiguration interface function. 258 */ 259 int 260 acpi_probe(void) 261 { 262 ACPI_TABLE_HEADER *rsdt; 263 const char *func; 264 static int once; 265 bool initialized; 266 ACPI_STATUS rv; 267 268 if (once != 0) 269 panic("%s: already probed", __func__); 270 271 once = 1; 272 func = NULL; 273 acpi_softc = NULL; 274 initialized = false; 275 276 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 277 278 /* 279 * Start up ACPICA. 280 */ 281 #ifdef ACPI_DEBUGGER 282 if (acpi_dbgr & ACPI_DBGR_INIT) 283 acpi_osd_debugger(); 284 #endif 285 286 CTASSERT(TRUE == true); 287 CTASSERT(FALSE == false); 288 289 AcpiGbl_AllMethodsSerialized = false; 290 AcpiGbl_EnableInterpreterSlack = true; 291 292 rv = AcpiInitializeSubsystem(); 293 294 if (ACPI_SUCCESS(rv)) 295 initialized = true; 296 else { 297 func = "AcpiInitializeSubsystem()"; 298 goto fail; 299 } 300 301 /* 302 * Allocate space for RSDT/XSDT and DSDT, 303 * but allow resizing if more tables exist. 304 */ 305 rv = AcpiInitializeTables(NULL, 2, true); 306 307 if (ACPI_FAILURE(rv)) { 308 func = "AcpiInitializeTables()"; 309 goto fail; 310 } 311 312 #ifdef ACPI_DEBUGGER 313 if (acpi_dbgr & ACPI_DBGR_TABLES) 314 acpi_osd_debugger(); 315 #endif 316 317 rv = AcpiLoadTables(); 318 319 if (ACPI_FAILURE(rv)) { 320 func = "AcpiLoadTables()"; 321 goto fail; 322 } 323 324 rsdt = acpi_map_rsdt(); 325 326 if (rsdt == NULL) { 327 func = "acpi_map_rsdt()"; 328 rv = AE_ERROR; 329 goto fail; 330 } 331 332 if (acpi_force_load == 0 && (acpi_find_quirks() & ACPI_QUIRK_BROKEN)) { 333 aprint_normal("ACPI: BIOS is listed as broken:\n"); 334 aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 335 "AslId <%4.4s,%08x>\n", 336 rsdt->OemId, rsdt->OemTableId, 337 rsdt->OemRevision, 338 rsdt->AslCompilerId, 339 rsdt->AslCompilerRevision); 340 aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n"); 341 acpi_unmap_rsdt(rsdt); 342 AcpiTerminate(); 343 return 0; 344 } 345 if (acpi_force_load == 0 && (acpi_find_quirks() & ACPI_QUIRK_OLDBIOS)) { 346 aprint_normal("ACPI: BIOS is too old (%s). Set acpi_force_load to use.\n", 347 pmf_get_platform("firmware-date")); 348 acpi_unmap_rsdt(rsdt); 349 AcpiTerminate(); 350 return 0; 351 } 352 353 acpi_unmap_rsdt(rsdt); 354 355 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 356 357 if (ACPI_FAILURE(rv)) { 358 func = "AcpiEnableSubsystem()"; 359 goto fail; 360 } 361 362 /* 363 * Looks like we have ACPI! 364 */ 365 return 1; 366 367 fail: 368 KASSERT(rv != AE_OK); 369 KASSERT(func != NULL); 370 371 aprint_error("%s: failed to probe ACPI: %s\n", 372 func, AcpiFormatException(rv)); 373 374 if (initialized != false) 375 (void)AcpiTerminate(); 376 377 return 0; 378 } 379 380 void 381 acpi_disable(void) 382 { 383 384 if (acpi_softc == NULL) 385 return; 386 387 KASSERT(acpi_active != 0); 388 389 if (AcpiGbl_FADT.SmiCommand != 0) 390 AcpiDisable(); 391 } 392 393 int 394 acpi_check(device_t parent, const char *ifattr) 395 { 396 return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); 397 } 398 399 /* 400 * Autoconfiguration. 401 */ 402 static int 403 acpi_match(device_t parent, cfdata_t match, void *aux) 404 { 405 /* 406 * XXX: Nada; MD code has called acpi_probe(). 407 */ 408 return 1; 409 } 410 411 static int 412 acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 413 { 414 struct cfattach *ca; 415 416 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 417 418 return (ca == &acpi_ca); 419 } 420 421 static void 422 acpi_attach(device_t parent, device_t self, void *aux) 423 { 424 struct acpi_softc *sc = device_private(self); 425 struct acpibus_attach_args *aa = aux; 426 ACPI_TABLE_HEADER *rsdt; 427 ACPI_STATUS rv; 428 429 aprint_naive("\n"); 430 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 431 432 if (acpi_softc != NULL) 433 panic("%s: already attached", __func__); 434 435 rsdt = acpi_map_rsdt(); 436 437 if (rsdt == NULL) 438 aprint_error_dev(self, "X/RSDT: Not found\n"); 439 else { 440 aprint_verbose_dev(self, 441 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 442 rsdt->OemId, rsdt->OemTableId, 443 rsdt->OemRevision, 444 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 445 } 446 447 acpi_unmap_rsdt(rsdt); 448 449 sc->sc_dev = self; 450 sc->sc_root = NULL; 451 452 sc->sc_sleepstate = ACPI_STATE_S0; 453 sc->sc_quirks = acpi_find_quirks(); 454 455 sysmon_power_settype("acpi"); 456 457 sc->sc_iot = aa->aa_iot; 458 sc->sc_memt = aa->aa_memt; 459 sc->sc_pc = aa->aa_pc; 460 sc->sc_pciflags = aa->aa_pciflags; 461 sc->sc_ic = aa->aa_ic; 462 463 SIMPLEQ_INIT(&sc->ad_head); 464 465 acpi_softc = sc; 466 467 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) 468 aprint_error_dev(self, "couldn't establish power handler\n"); 469 470 /* 471 * Bring ACPI on-line. 472 */ 473 #ifdef ACPI_DEBUGGER 474 if (acpi_dbgr & ACPI_DBGR_ENABLE) 475 acpi_osd_debugger(); 476 #endif 477 478 #define ACPI_ENABLE_PHASE1 \ 479 (ACPI_NO_HANDLER_INIT | ACPI_NO_EVENT_INIT) 480 #define ACPI_ENABLE_PHASE2 \ 481 (ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE | \ 482 ACPI_NO_ADDRESS_SPACE_INIT) 483 484 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE1); 485 486 if (ACPI_FAILURE(rv)) 487 goto fail; 488 489 acpi_md_callback(); 490 491 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE2); 492 493 if (ACPI_FAILURE(rv)) 494 goto fail; 495 496 /* 497 * Early EC handler initialization if ECDT table is available. 498 */ 499 config_found_ia(self, "acpiecdtbus", aa, NULL); 500 501 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 502 503 if (ACPI_FAILURE(rv)) 504 goto fail; 505 506 /* 507 * Install global notify handlers. 508 */ 509 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 510 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 511 512 if (ACPI_FAILURE(rv)) 513 goto fail; 514 515 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 516 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 517 518 if (ACPI_FAILURE(rv)) 519 goto fail; 520 521 acpi_active = 1; 522 523 /* Show SCI interrupt. */ 524 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 525 AcpiGbl_FADT.SciInterrupt); 526 527 /* 528 * Install fixed-event handlers. 529 */ 530 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 531 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 532 533 acpitimer_init(sc); 534 535 #ifdef ACPI_DEBUGGER 536 if (acpi_dbgr & ACPI_DBGR_PROBE) 537 acpi_osd_debugger(); 538 #endif 539 540 /* 541 * Scan the namespace and build our device tree. 542 */ 543 acpi_build_tree(sc); 544 acpi_sleep_init(sc); 545 546 #ifdef ACPI_DEBUGGER 547 if (acpi_dbgr & ACPI_DBGR_RUNNING) 548 acpi_osd_debugger(); 549 #endif 550 551 #ifdef ACPI_DEBUG 552 acpi_debug_init(); 553 #endif 554 555 /* 556 * Print debug information. 557 */ 558 acpi_print_verbose(sc); 559 560 return; 561 562 fail: 563 aprint_error("%s: failed to initialize ACPI: %s\n", 564 __func__, AcpiFormatException(rv)); 565 } 566 567 /* 568 * XXX: This is incomplete. 569 */ 570 static int 571 acpi_detach(device_t self, int flags) 572 { 573 struct acpi_softc *sc = device_private(self); 574 ACPI_STATUS rv; 575 int rc; 576 577 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 578 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 579 580 if (ACPI_FAILURE(rv)) 581 return EBUSY; 582 583 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 584 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 585 586 if (ACPI_FAILURE(rv)) 587 return EBUSY; 588 589 if ((rc = config_detach_children(self, flags)) != 0) 590 return rc; 591 592 if ((rc = acpitimer_detach()) != 0) 593 return rc; 594 595 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 596 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 597 598 pmf_device_deregister(self); 599 600 acpi_softc = NULL; 601 602 return 0; 603 } 604 605 /* 606 * XXX: Need to reclaim any resources? Yes. 607 */ 608 static void 609 acpi_childdet(device_t self, device_t child) 610 { 611 struct acpi_softc *sc = device_private(self); 612 struct acpi_devnode *ad; 613 614 if (sc->sc_apmbus == child) 615 sc->sc_apmbus = NULL; 616 if (sc->sc_wdrt == child) 617 sc->sc_wdrt = NULL; 618 619 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 620 621 if (ad->ad_device == child) 622 ad->ad_device = NULL; 623 } 624 } 625 626 static bool 627 acpi_suspend(device_t dv, const pmf_qual_t *qual) 628 { 629 630 acpi_suspended = 1; 631 632 return true; 633 } 634 635 static bool 636 acpi_resume(device_t dv, const pmf_qual_t *qual) 637 { 638 639 acpi_suspended = 0; 640 641 return true; 642 } 643 644 /* 645 * Namespace scan. 646 */ 647 static void 648 acpi_build_tree(struct acpi_softc *sc) 649 { 650 struct acpi_walkcontext awc; 651 652 /* 653 * Get the root scope handles. 654 */ 655 KASSERT(__arraycount(acpi_scopes) == 4); 656 657 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 658 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 659 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 660 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 661 662 /* 663 * Make the root node. 664 */ 665 awc.aw_sc = sc; 666 awc.aw_parent = NULL; 667 668 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 669 670 KASSERT(sc->sc_root == NULL); 671 KASSERT(awc.aw_parent != NULL); 672 673 sc->sc_root = awc.aw_parent; 674 675 /* 676 * Build the internal namespace. 677 */ 678 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 679 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 680 681 /* 682 * Scan the internal namespace. 683 */ 684 (void)acpi_pcidev_scan(sc->sc_root); 685 (void)acpi_rescan(sc->sc_dev, NULL, NULL); 686 687 /* 688 * Defer rest of the configuration. 689 */ 690 (void)config_defer(sc->sc_dev, acpi_rescan_capabilities); 691 } 692 693 static ACPI_STATUS 694 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 695 void *context, void **status) 696 { 697 struct acpi_walkcontext *awc = context; 698 struct acpi_softc *sc = awc->aw_sc; 699 struct acpi_devnode *ad; 700 ACPI_DEVICE_INFO *devinfo; 701 ACPI_OBJECT_TYPE type; 702 ACPI_STATUS rv; 703 704 rv = AcpiGetObjectInfo(handle, &devinfo); 705 706 if (ACPI_FAILURE(rv)) 707 return AE_OK; /* Do not terminate the walk. */ 708 709 type = devinfo->Type; 710 711 switch (type) { 712 713 case ACPI_TYPE_DEVICE: 714 acpi_activate_device(handle, &devinfo); 715 case ACPI_TYPE_PROCESSOR: 716 case ACPI_TYPE_THERMAL: 717 case ACPI_TYPE_POWER: 718 719 ad = malloc(sizeof(*ad), M_ACPI, M_NOWAIT | M_ZERO); 720 721 if (ad == NULL) 722 return AE_NO_MEMORY; 723 724 ad->ad_device = NULL; 725 ad->ad_notify = NULL; 726 ad->ad_pciinfo = NULL; 727 728 ad->ad_type = type; 729 ad->ad_handle = handle; 730 ad->ad_devinfo = devinfo; 731 732 ad->ad_root = sc->sc_dev; 733 ad->ad_parent = awc->aw_parent; 734 735 acpi_set_node(ad); 736 acpi_make_name(ad, devinfo->Name); 737 738 SIMPLEQ_INIT(&ad->ad_child_head); 739 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 740 741 if (ad->ad_parent != NULL) { 742 743 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 744 ad, ad_child_list); 745 } 746 747 awc->aw_parent = ad; 748 } 749 750 return AE_OK; 751 } 752 753 static ACPI_STATUS 754 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 755 void *context, void **status) 756 { 757 struct acpi_walkcontext *awc = context; 758 759 KASSERT(awc != NULL); 760 KASSERT(awc->aw_parent != NULL); 761 762 if (handle == awc->aw_parent->ad_handle) 763 awc->aw_parent = awc->aw_parent->ad_parent; 764 765 return AE_OK; 766 } 767 768 static void 769 acpi_make_name(struct acpi_devnode *ad, uint32_t name) 770 { 771 ACPI_NAME_UNION *anu; 772 int clear, i; 773 774 anu = (ACPI_NAME_UNION *)&name; 775 ad->ad_name[4] = '\0'; 776 777 for (i = 3, clear = 0; i >= 0; i--) { 778 779 if (clear == 0 && anu->Ascii[i] == '_') 780 ad->ad_name[i] = '\0'; 781 else { 782 ad->ad_name[i] = anu->Ascii[i]; 783 clear = 1; 784 } 785 } 786 787 if (ad->ad_name[0] == '\0') 788 ad->ad_name[0] = '_'; 789 } 790 791 /* 792 * Device attachment. 793 */ 794 static int 795 acpi_rescan(device_t self, const char *ifattr, const int *locators) 796 { 797 struct acpi_softc *sc = device_private(self); 798 799 /* 800 * A two-pass scan for acpinodebus. 801 */ 802 if (ifattr_match(ifattr, "acpinodebus")) { 803 acpi_rescan_early(sc); 804 acpi_rescan_nodes(sc); 805 } 806 807 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 808 sc->sc_apmbus = config_found_ia(sc->sc_dev, 809 "acpiapmbus", NULL, NULL); 810 811 if (ifattr_match(ifattr, "acpiwdrtbus") && sc->sc_wdrt == NULL) 812 sc->sc_wdrt = config_found_ia(sc->sc_dev, 813 "acpiwdrtbus", NULL, NULL); 814 815 return 0; 816 } 817 818 static void 819 acpi_rescan_early(struct acpi_softc *sc) 820 { 821 struct acpi_attach_args aa; 822 struct acpi_devnode *ad; 823 824 /* 825 * First scan for devices such as acpiec(4) that 826 * should be always attached before anything else. 827 * We want these devices to attach regardless of 828 * the device status and other restrictions. 829 */ 830 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 831 832 if (ad->ad_device != NULL) 833 continue; 834 835 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 836 continue; 837 838 if (acpi_match_hid(ad->ad_devinfo, acpi_early_ids) == 0) 839 continue; 840 841 aa.aa_node = ad; 842 aa.aa_iot = sc->sc_iot; 843 aa.aa_memt = sc->sc_memt; 844 aa.aa_pc = sc->sc_pc; 845 aa.aa_pciflags = sc->sc_pciflags; 846 aa.aa_ic = sc->sc_ic; 847 848 ad->ad_device = config_found_ia(sc->sc_dev, 849 "acpinodebus", &aa, acpi_print); 850 } 851 } 852 853 static void 854 acpi_rescan_nodes(struct acpi_softc *sc) 855 { 856 const uint32_t ncpus = acpi_md_ncpus(); 857 struct acpi_attach_args aa; 858 struct acpi_devnode *ad; 859 ACPI_DEVICE_INFO *di; 860 861 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 862 863 if (ad->ad_device != NULL) 864 continue; 865 866 /* 867 * There is a bug in ACPICA: it defines the type 868 * of the scopes incorrectly for its own reasons. 869 */ 870 if (acpi_is_scope(ad) != false) 871 continue; 872 873 di = ad->ad_devinfo; 874 875 /* 876 * We only attach devices which are present, enabled, and 877 * functioning properly. However, if a device is enabled, 878 * it is decoding resources and we should claim these, 879 * if possible. This requires changes to bus_space(9). 880 * Note: there is a possible race condition, because _STA 881 * may have changed since di->CurrentStatus was set. 882 */ 883 if (di->Type == ACPI_TYPE_DEVICE) { 884 885 if ((di->Valid & ACPI_VALID_STA) != 0 && 886 (di->CurrentStatus & ACPI_STA_OK) != ACPI_STA_OK) 887 continue; 888 } 889 890 if (di->Type == ACPI_TYPE_POWER) 891 continue; 892 893 if (di->Type == ACPI_TYPE_PROCESSOR && acpi_cpus >= ncpus) 894 continue; 895 896 if (acpi_match_hid(di, acpi_early_ids) != 0) 897 continue; 898 899 if (acpi_match_hid(di, acpi_ignored_ids) != 0) 900 continue; 901 902 aa.aa_node = ad; 903 aa.aa_iot = sc->sc_iot; 904 aa.aa_memt = sc->sc_memt; 905 aa.aa_pc = sc->sc_pc; 906 aa.aa_pciflags = sc->sc_pciflags; 907 aa.aa_ic = sc->sc_ic; 908 909 ad->ad_device = config_found_ia(sc->sc_dev, 910 "acpinodebus", &aa, acpi_print); 911 } 912 } 913 914 static void 915 acpi_rescan_capabilities(device_t self) 916 { 917 struct acpi_softc *sc = device_private(self); 918 struct acpi_devnode *ad; 919 ACPI_HANDLE tmp; 920 ACPI_STATUS rv; 921 922 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 923 924 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 925 continue; 926 927 /* 928 * Scan power resource capabilities. 929 * 930 * If any power states are supported, 931 * at least _PR0 and _PR3 must be present. 932 */ 933 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 934 935 if (ACPI_SUCCESS(rv)) { 936 ad->ad_flags |= ACPI_DEVICE_POWER; 937 acpi_power_add(ad); 938 } 939 940 /* 941 * Scan wake-up capabilities. 942 */ 943 rv = AcpiGetHandle(ad->ad_handle, "_PRW", &tmp); 944 945 if (ACPI_SUCCESS(rv)) { 946 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 947 acpi_wakedev_add(ad); 948 } 949 950 /* 951 * Scan docking stations. 952 */ 953 rv = AcpiGetHandle(ad->ad_handle, "_DCK", &tmp); 954 955 if (ACPI_SUCCESS(rv)) 956 ad->ad_flags |= ACPI_DEVICE_DOCK; 957 958 /* 959 * Scan devices that are ejectable. 960 */ 961 rv = AcpiGetHandle(ad->ad_handle, "_EJ0", &tmp); 962 963 if (ACPI_SUCCESS(rv)) 964 ad->ad_flags |= ACPI_DEVICE_EJECT; 965 } 966 } 967 968 static int 969 acpi_print(void *aux, const char *pnp) 970 { 971 struct acpi_attach_args *aa = aux; 972 struct acpi_devnode *ad; 973 const char *hid, *uid; 974 ACPI_DEVICE_INFO *di; 975 976 ad = aa->aa_node; 977 di = ad->ad_devinfo; 978 979 hid = di->HardwareId.String; 980 uid = di->UniqueId.String; 981 982 if (pnp != NULL) { 983 984 if (di->Type != ACPI_TYPE_DEVICE) { 985 986 aprint_normal("%s (ACPI Object Type '%s') at %s", 987 ad->ad_name, AcpiUtGetTypeName(ad->ad_type), pnp); 988 989 return UNCONF; 990 } 991 992 if ((di->Valid & ACPI_VALID_HID) == 0 || hid == NULL) 993 return 0; 994 995 aprint_normal("%s (%s) ", ad->ad_name, hid); 996 acpi_print_dev(hid); 997 aprint_normal("at %s", pnp); 998 999 return UNCONF; 1000 } 1001 1002 aprint_normal(" (%s", ad->ad_name); 1003 1004 if ((di->Valid & ACPI_VALID_HID) != 0 && hid != NULL) { 1005 1006 aprint_normal(", %s", hid); 1007 1008 if ((di->Valid & ACPI_VALID_UID) != 0 && uid != NULL) { 1009 1010 if (uid[0] == '\0') 1011 uid = "<null>"; 1012 1013 aprint_normal("-%s", uid); 1014 } 1015 } 1016 1017 aprint_normal(")"); 1018 1019 return UNCONF; 1020 } 1021 1022 /* 1023 * Notify. 1024 */ 1025 static void 1026 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1027 { 1028 struct acpi_softc *sc = acpi_softc; 1029 struct acpi_devnode *ad; 1030 1031 KASSERT(sc != NULL); 1032 KASSERT(aux == NULL); 1033 KASSERT(acpi_active != 0); 1034 1035 if (acpi_suspended != 0) 1036 return; 1037 1038 /* 1039 * System: 0x00 - 0x7F. 1040 * Device: 0x80 - 0xFF. 1041 */ 1042 switch (event) { 1043 1044 case ACPI_NOTIFY_BUS_CHECK: 1045 case ACPI_NOTIFY_DEVICE_CHECK: 1046 case ACPI_NOTIFY_DEVICE_WAKE: 1047 case ACPI_NOTIFY_EJECT_REQUEST: 1048 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1049 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1050 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1051 case ACPI_NOTIFY_POWER_FAULT: 1052 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1053 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1054 case ACPI_NOTIFY_RESERVED: 1055 case ACPI_NOTIFY_LOCALITY_UPDATE: 1056 break; 1057 } 1058 1059 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1060 "%s (%p)\n", event, acpi_name(handle), handle)); 1061 1062 /* 1063 * We deliver notifications only to drivers 1064 * that have been succesfully attached and 1065 * that have registered a handler with us. 1066 * The opaque pointer is always the device_t. 1067 */ 1068 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1069 1070 if (ad->ad_device == NULL) 1071 continue; 1072 1073 if (ad->ad_notify == NULL) 1074 continue; 1075 1076 if (ad->ad_handle != handle) 1077 continue; 1078 1079 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1080 1081 return; 1082 } 1083 1084 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1085 "for %s (%p)\n", event, acpi_name(handle), handle); 1086 } 1087 1088 bool 1089 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1090 { 1091 struct acpi_softc *sc = acpi_softc; 1092 1093 KASSERT(sc != NULL); 1094 KASSERT(acpi_active != 0); 1095 1096 if (acpi_suspended != 0) 1097 goto fail; 1098 1099 if (ad == NULL || notify == NULL) 1100 goto fail; 1101 1102 ad->ad_notify = notify; 1103 1104 return true; 1105 1106 fail: 1107 aprint_error_dev(sc->sc_dev, "failed to register notify " 1108 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1109 1110 return false; 1111 } 1112 1113 void 1114 acpi_deregister_notify(struct acpi_devnode *ad) 1115 { 1116 1117 ad->ad_notify = NULL; 1118 } 1119 1120 /* 1121 * Fixed buttons. 1122 */ 1123 static void 1124 acpi_register_fixed_button(struct acpi_softc *sc, int event) 1125 { 1126 struct sysmon_pswitch *smpsw; 1127 ACPI_STATUS rv; 1128 int type; 1129 1130 switch (event) { 1131 1132 case ACPI_EVENT_POWER_BUTTON: 1133 1134 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1135 return; 1136 1137 type = PSWITCH_TYPE_POWER; 1138 smpsw = &sc->sc_smpsw_power; 1139 break; 1140 1141 case ACPI_EVENT_SLEEP_BUTTON: 1142 1143 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1144 return; 1145 1146 type = PSWITCH_TYPE_SLEEP; 1147 smpsw = &sc->sc_smpsw_sleep; 1148 break; 1149 1150 default: 1151 rv = AE_TYPE; 1152 goto fail; 1153 } 1154 1155 smpsw->smpsw_type = type; 1156 smpsw->smpsw_name = device_xname(sc->sc_dev); 1157 1158 if (sysmon_pswitch_register(smpsw) != 0) { 1159 rv = AE_ERROR; 1160 goto fail; 1161 } 1162 1163 rv = AcpiInstallFixedEventHandler(event, 1164 acpi_fixed_button_handler, smpsw); 1165 1166 if (ACPI_FAILURE(rv)) { 1167 sysmon_pswitch_unregister(smpsw); 1168 goto fail; 1169 } 1170 1171 aprint_debug_dev(sc->sc_dev, "fixed %s button present\n", 1172 (type != ACPI_EVENT_SLEEP_BUTTON) ? "power" : "sleep"); 1173 1174 return; 1175 1176 fail: 1177 aprint_error_dev(sc->sc_dev, "failed to register " 1178 "fixed event: %s\n", AcpiFormatException(rv)); 1179 } 1180 1181 static void 1182 acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1183 { 1184 struct sysmon_pswitch *smpsw; 1185 ACPI_STATUS rv; 1186 1187 switch (event) { 1188 1189 case ACPI_EVENT_POWER_BUTTON: 1190 smpsw = &sc->sc_smpsw_power; 1191 1192 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1193 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1194 return; 1195 } 1196 1197 break; 1198 1199 case ACPI_EVENT_SLEEP_BUTTON: 1200 smpsw = &sc->sc_smpsw_sleep; 1201 1202 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1203 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1204 return; 1205 } 1206 1207 break; 1208 1209 default: 1210 rv = AE_TYPE; 1211 goto fail; 1212 } 1213 1214 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1215 1216 if (ACPI_SUCCESS(rv)) { 1217 sysmon_pswitch_unregister(smpsw); 1218 return; 1219 } 1220 1221 fail: 1222 aprint_error_dev(sc->sc_dev, "failed to deregister " 1223 "fixed event: %s\n", AcpiFormatException(rv)); 1224 } 1225 1226 static uint32_t 1227 acpi_fixed_button_handler(void *context) 1228 { 1229 static const int handler = OSL_NOTIFY_HANDLER; 1230 struct sysmon_pswitch *smpsw = context; 1231 1232 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1233 1234 return ACPI_INTERRUPT_HANDLED; 1235 } 1236 1237 static void 1238 acpi_fixed_button_pressed(void *context) 1239 { 1240 struct sysmon_pswitch *smpsw = context; 1241 1242 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1243 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1244 "power" : "sleep")); 1245 1246 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1247 } 1248 1249 /* 1250 * Sleep. 1251 */ 1252 static void 1253 acpi_sleep_init(struct acpi_softc *sc) 1254 { 1255 uint8_t a, b, i; 1256 ACPI_STATUS rv; 1257 1258 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1259 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1260 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1261 1262 /* 1263 * Evaluate supported sleep states. 1264 */ 1265 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1266 1267 rv = AcpiGetSleepTypeData(i, &a, &b); 1268 1269 if (ACPI_SUCCESS(rv)) 1270 sc->sc_sleepstates |= __BIT(i); 1271 } 1272 } 1273 1274 /* 1275 * Must be called with interrupts enabled. 1276 */ 1277 void 1278 acpi_enter_sleep_state(int state) 1279 { 1280 struct acpi_softc *sc = acpi_softc; 1281 ACPI_STATUS rv; 1282 int err; 1283 1284 if (acpi_softc == NULL) 1285 return; 1286 1287 if (state == sc->sc_sleepstate) 1288 return; 1289 1290 if (state < ACPI_STATE_S0 || state > ACPI_STATE_S5) 1291 return; 1292 1293 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1294 1295 switch (state) { 1296 1297 case ACPI_STATE_S0: 1298 sc->sc_sleepstate = ACPI_STATE_S0; 1299 return; 1300 1301 case ACPI_STATE_S1: 1302 case ACPI_STATE_S2: 1303 case ACPI_STATE_S3: 1304 case ACPI_STATE_S4: 1305 1306 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1307 aprint_error_dev(sc->sc_dev, "sleep state " 1308 "S%d is not available\n", state); 1309 return; 1310 } 1311 1312 /* 1313 * Evaluate the _TTS method. This should be done before 1314 * pmf_system_suspend(9) and the evaluation of _PTS. 1315 * We should also re-evaluate this once we return to 1316 * S0 or if we abort the sleep state transition in the 1317 * middle (see ACPI 3.0, section 7.3.6). In reality, 1318 * however, the _TTS method is seldom seen in the field. 1319 */ 1320 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1321 1322 if (ACPI_SUCCESS(rv)) 1323 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1324 1325 if (state != ACPI_STATE_S1 && 1326 pmf_system_suspend(PMF_Q_NONE) != true) { 1327 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1328 break; 1329 } 1330 1331 /* 1332 * This will evaluate the _PTS and _SST methods, 1333 * but unlike the documentation claims, not _GTS, 1334 * which is evaluated in AcpiEnterSleepState(). 1335 * This must be called with interrupts enabled. 1336 */ 1337 rv = AcpiEnterSleepStatePrep(state); 1338 1339 if (ACPI_FAILURE(rv)) { 1340 aprint_error_dev(sc->sc_dev, "failed to prepare " 1341 "S%d: %s\n", state, AcpiFormatException(rv)); 1342 break; 1343 } 1344 1345 /* 1346 * After the _PTS method has been evaluated, we can 1347 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1348 */ 1349 acpi_wakedev_commit(sc, state); 1350 1351 sc->sc_sleepstate = state; 1352 1353 if (state == ACPI_STATE_S1) { 1354 1355 /* Just enter the state. */ 1356 acpi_md_OsDisableInterrupt(); 1357 rv = AcpiEnterSleepState(state); 1358 1359 if (ACPI_FAILURE(rv)) 1360 aprint_error_dev(sc->sc_dev, "failed to " 1361 "enter S1: %s\n", AcpiFormatException(rv)); 1362 1363 (void)AcpiLeaveSleepState(state); 1364 1365 } else { 1366 1367 err = acpi_md_sleep(state); 1368 1369 if (state == ACPI_STATE_S4) 1370 AcpiEnable(); 1371 1372 (void)pmf_system_bus_resume(PMF_Q_NONE); 1373 (void)AcpiLeaveSleepState(state); 1374 (void)AcpiSetFirmwareWakingVector(0); 1375 (void)pmf_system_resume(PMF_Q_NONE); 1376 } 1377 1378 break; 1379 1380 case ACPI_STATE_S5: 1381 1382 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1383 1384 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1385 1386 if (ACPI_FAILURE(rv)) { 1387 aprint_error_dev(sc->sc_dev, "failed to prepare " 1388 "S%d: %s\n", state, AcpiFormatException(rv)); 1389 break; 1390 } 1391 1392 (void)AcpiDisableAllGpes(); 1393 1394 DELAY(1000000); 1395 1396 sc->sc_sleepstate = state; 1397 acpi_md_OsDisableInterrupt(); 1398 1399 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1400 1401 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1402 1403 break; 1404 } 1405 1406 sc->sc_sleepstate = ACPI_STATE_S0; 1407 1408 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1409 } 1410 1411 /* 1412 * Sysctl. 1413 */ 1414 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1415 { 1416 const struct sysctlnode *mnode, *rnode, *snode; 1417 int err; 1418 1419 err = sysctl_createv(clog, 0, NULL, &rnode, 1420 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", 1421 NULL, NULL, 0, NULL, 0, 1422 CTL_HW, CTL_EOL); 1423 1424 if (err != 0) 1425 return; 1426 1427 err = sysctl_createv(clog, 0, &rnode, &rnode, 1428 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1429 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1430 NULL, 0, NULL, 0, 1431 CTL_CREATE, CTL_EOL); 1432 1433 if (err != 0) 1434 return; 1435 1436 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1437 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1438 "root", SYSCTL_DESCR("ACPI root pointer"), 1439 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1440 CTL_CREATE, CTL_EOL); 1441 1442 err = sysctl_createv(clog, 0, &rnode, &snode, 1443 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1444 "sleep", SYSCTL_DESCR("ACPI sleep"), 1445 NULL, 0, NULL, 0, 1446 CTL_CREATE, CTL_EOL); 1447 1448 if (err != 0) 1449 return; 1450 1451 (void)sysctl_createv(NULL, 0, &snode, NULL, 1452 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1453 "state", SYSCTL_DESCR("System sleep state"), 1454 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1455 CTL_CREATE, CTL_EOL); 1456 1457 (void)sysctl_createv(NULL, 0, &snode, NULL, 1458 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1459 "states", SYSCTL_DESCR("Supported sleep states"), 1460 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1461 CTL_CREATE, CTL_EOL); 1462 1463 /* 1464 * For the time being, machdep.sleep_state 1465 * is provided for backwards compatibility. 1466 */ 1467 err = sysctl_createv(NULL, 0, NULL, &mnode, 1468 CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep", 1469 NULL, NULL, 0, NULL, 0, 1470 CTL_MACHDEP, CTL_EOL); 1471 1472 if (err == 0) { 1473 1474 (void)sysctl_createv(NULL, 0, &mnode, NULL, 1475 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1476 "sleep_state", SYSCTL_DESCR("System sleep state"), 1477 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1478 CTL_CREATE, CTL_EOL); 1479 } 1480 1481 err = sysctl_createv(clog, 0, &rnode, &rnode, 1482 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1483 "stat", SYSCTL_DESCR("ACPI statistics"), 1484 NULL, 0, NULL, 0, 1485 CTL_CREATE, CTL_EOL); 1486 1487 if (err != 0) 1488 return; 1489 1490 (void)sysctl_createv(clog, 0, &rnode, NULL, 1491 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1492 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1493 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1494 CTL_CREATE, CTL_EOL); 1495 1496 (void)sysctl_createv(clog, 0, &rnode, NULL, 1497 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1498 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1499 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1500 CTL_CREATE, CTL_EOL); 1501 1502 (void)sysctl_createv(clog, 0, &rnode, NULL, 1503 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1504 "fixed", SYSCTL_DESCR("Number of fixed events"), 1505 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1506 CTL_CREATE, CTL_EOL); 1507 1508 (void)sysctl_createv(clog, 0, &rnode, NULL, 1509 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1510 "method", SYSCTL_DESCR("Number of methods executed"), 1511 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1512 CTL_CREATE, CTL_EOL); 1513 1514 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1515 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1516 } 1517 1518 static int 1519 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1520 { 1521 struct sysctlnode node; 1522 uint64_t t; 1523 int err, i; 1524 1525 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1526 t += AcpiFixedEventCount[i]; 1527 1528 node = *rnode; 1529 node.sysctl_data = &t; 1530 1531 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1532 1533 if (err || newp == NULL) 1534 return err; 1535 1536 return 0; 1537 } 1538 1539 static int 1540 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1541 { 1542 struct acpi_softc *sc = acpi_softc; 1543 struct sysctlnode node; 1544 int err, t; 1545 1546 if (acpi_softc == NULL) 1547 return ENOSYS; 1548 1549 node = *rnode; 1550 t = sc->sc_sleepstate; 1551 node.sysctl_data = &t; 1552 1553 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1554 1555 if (err || newp == NULL) 1556 return err; 1557 1558 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1559 return EINVAL; 1560 1561 acpi_enter_sleep_state(t); 1562 1563 return 0; 1564 } 1565 1566 static int 1567 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1568 { 1569 struct acpi_softc *sc = acpi_softc; 1570 struct sysctlnode node; 1571 char t[3 * 6 + 1]; 1572 int err; 1573 1574 if (acpi_softc == NULL) 1575 return ENOSYS; 1576 1577 (void)memset(t, '\0', sizeof(t)); 1578 1579 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1580 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1581 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1582 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1583 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1584 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1585 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1586 1587 node = *rnode; 1588 node.sysctl_data = &t; 1589 1590 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1591 1592 if (err || newp == NULL) 1593 return err; 1594 1595 return 0; 1596 } 1597 1598 /* 1599 * Tables. 1600 */ 1601 ACPI_PHYSICAL_ADDRESS 1602 acpi_OsGetRootPointer(void) 1603 { 1604 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1605 1606 /* 1607 * We let MD code handle this since there are multiple ways to do it: 1608 * 1609 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1610 * 1611 * IA-64: Use the EFI. 1612 */ 1613 PhysicalAddress = acpi_md_OsGetRootPointer(); 1614 1615 if (acpi_root_pointer == 0) 1616 acpi_root_pointer = PhysicalAddress; 1617 1618 return PhysicalAddress; 1619 } 1620 1621 static ACPI_TABLE_HEADER * 1622 acpi_map_rsdt(void) 1623 { 1624 ACPI_PHYSICAL_ADDRESS paddr; 1625 ACPI_TABLE_RSDP *rsdp; 1626 1627 paddr = AcpiOsGetRootPointer(); 1628 1629 if (paddr == 0) 1630 return NULL; 1631 1632 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1633 1634 if (rsdp == NULL) 1635 return NULL; 1636 1637 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1638 paddr = rsdp->XsdtPhysicalAddress; 1639 else 1640 paddr = rsdp->RsdtPhysicalAddress; 1641 1642 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1643 1644 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1645 } 1646 1647 static void 1648 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1649 { 1650 1651 if (rsdt == NULL) 1652 return; 1653 1654 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1655 } 1656 1657 /* 1658 * XXX: Refactor to be a generic function that maps tables. 1659 */ 1660 ACPI_STATUS 1661 acpi_madt_map(void) 1662 { 1663 ACPI_STATUS rv; 1664 1665 if (madt_header != NULL) 1666 return AE_ALREADY_EXISTS; 1667 1668 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); 1669 1670 if (ACPI_FAILURE(rv)) 1671 return rv; 1672 1673 return AE_OK; 1674 } 1675 1676 void 1677 acpi_madt_unmap(void) 1678 { 1679 madt_header = NULL; 1680 } 1681 1682 /* 1683 * XXX: Refactor to be a generic function that walks tables. 1684 */ 1685 void 1686 acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) 1687 { 1688 ACPI_SUBTABLE_HEADER *hdrp; 1689 char *madtend, *where; 1690 1691 madtend = (char *)madt_header + madt_header->Length; 1692 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); 1693 1694 while (where < madtend) { 1695 1696 hdrp = (ACPI_SUBTABLE_HEADER *)where; 1697 1698 if (ACPI_FAILURE(func(hdrp, aux))) 1699 break; 1700 1701 where += hdrp->Length; 1702 } 1703 } 1704 1705 /* 1706 * Miscellaneous. 1707 */ 1708 static bool 1709 acpi_is_scope(struct acpi_devnode *ad) 1710 { 1711 int i; 1712 1713 /* 1714 * Return true if the node is a root scope. 1715 */ 1716 if (ad->ad_parent == NULL) 1717 return false; 1718 1719 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1720 return false; 1721 1722 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1723 1724 if (acpi_scopes[i] == NULL) 1725 continue; 1726 1727 if (ad->ad_handle == acpi_scopes[i]) 1728 return true; 1729 } 1730 1731 return false; 1732 } 1733 1734 /* 1735 * ACPIVERBOSE. 1736 */ 1737 void 1738 acpi_load_verbose(void) 1739 { 1740 1741 if (acpi_verbose_loaded == 0) 1742 module_autoload("acpiverbose", MODULE_CLASS_MISC); 1743 } 1744 1745 void 1746 acpi_print_verbose_stub(struct acpi_softc *sc) 1747 { 1748 1749 acpi_load_verbose(); 1750 1751 if (acpi_verbose_loaded != 0) 1752 acpi_print_verbose(sc); 1753 } 1754 1755 void 1756 acpi_print_dev_stub(const char *pnpstr) 1757 { 1758 1759 acpi_load_verbose(); 1760 1761 if (acpi_verbose_loaded != 0) 1762 acpi_print_dev(pnpstr); 1763 } 1764 1765 /* 1766 * ACPI_ACTIVATE_DEV. 1767 */ 1768 static void 1769 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 1770 { 1771 1772 #ifndef ACPI_ACTIVATE_DEV 1773 return; 1774 } 1775 #else 1776 static const int valid = ACPI_VALID_STA | ACPI_VALID_HID; 1777 ACPI_DEVICE_INFO *newdi; 1778 ACPI_STATUS rv; 1779 uint32_t old; 1780 1781 /* 1782 * If the device is valid and present, 1783 * but not enabled, try to activate it. 1784 */ 1785 if (((*di)->Valid & valid) != valid) 1786 return; 1787 1788 old = (*di)->CurrentStatus; 1789 1790 if ((old & (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED)) != 1791 ACPI_STA_DEVICE_PRESENT) 1792 return; 1793 1794 rv = acpi_allocate_resources(handle); 1795 1796 if (ACPI_FAILURE(rv)) 1797 goto fail; 1798 1799 rv = AcpiGetObjectInfo(handle, &newdi); 1800 1801 if (ACPI_FAILURE(rv)) 1802 goto fail; 1803 1804 ACPI_FREE(*di); 1805 *di = newdi; 1806 1807 aprint_verbose_dev(acpi_softc->sc_dev, 1808 "%s activated, STA 0x%08X -> STA 0x%08X\n", 1809 (*di)->HardwareId.String, old, (*di)->CurrentStatus); 1810 1811 return; 1812 1813 fail: 1814 aprint_error_dev(acpi_softc->sc_dev, "failed to " 1815 "activate %s\n", (*di)->HardwareId.String); 1816 } 1817 1818 /* 1819 * XXX: This very incomplete. 1820 */ 1821 ACPI_STATUS 1822 acpi_allocate_resources(ACPI_HANDLE handle) 1823 { 1824 ACPI_BUFFER bufp, bufc, bufn; 1825 ACPI_RESOURCE *resp, *resc, *resn; 1826 ACPI_RESOURCE_IRQ *irq; 1827 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 1828 ACPI_STATUS rv; 1829 uint delta; 1830 1831 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 1832 if (ACPI_FAILURE(rv)) 1833 goto out; 1834 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 1835 if (ACPI_FAILURE(rv)) { 1836 goto out1; 1837 } 1838 1839 bufn.Length = 1000; 1840 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 1841 resp = bufp.Pointer; 1842 resc = bufc.Pointer; 1843 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 1844 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1845 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 1846 resp = ACPI_NEXT_RESOURCE(resp); 1847 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 1848 break; 1849 /* Found identical Id */ 1850 resn->Type = resc->Type; 1851 switch (resc->Type) { 1852 case ACPI_RESOURCE_TYPE_IRQ: 1853 memcpy(&resn->Data, &resp->Data, 1854 sizeof(ACPI_RESOURCE_IRQ)); 1855 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 1856 irq->Interrupts[0] = 1857 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 1858 Interrupts[irq->InterruptCount-1]; 1859 irq->InterruptCount = 1; 1860 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 1861 break; 1862 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 1863 memcpy(&resn->Data, &resp->Data, 1864 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 1865 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 1866 #if 0 1867 /* 1868 * XXX: Not duplicating the interrupt logic above 1869 * because its not clear what it accomplishes. 1870 */ 1871 xirq->Interrupts[0] = 1872 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 1873 Interrupts[irq->NumberOfInterrupts-1]; 1874 xirq->NumberOfInterrupts = 1; 1875 #endif 1876 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 1877 break; 1878 case ACPI_RESOURCE_TYPE_IO: 1879 memcpy(&resn->Data, &resp->Data, 1880 sizeof(ACPI_RESOURCE_IO)); 1881 resn->Length = resp->Length; 1882 break; 1883 default: 1884 aprint_error_dev(acpi_softc->sc_dev, 1885 "%s: invalid type %u\n", __func__, resc->Type); 1886 rv = AE_BAD_DATA; 1887 goto out2; 1888 } 1889 resc = ACPI_NEXT_RESOURCE(resc); 1890 resn = ACPI_NEXT_RESOURCE(resn); 1891 resp = ACPI_NEXT_RESOURCE(resp); 1892 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 1893 if (delta >= 1894 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 1895 bufn.Length *= 2; 1896 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 1897 M_ACPI, M_WAITOK); 1898 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 1899 delta); 1900 } 1901 } 1902 1903 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1904 aprint_error_dev(acpi_softc->sc_dev, 1905 "%s: resc not exhausted\n", __func__); 1906 rv = AE_BAD_DATA; 1907 goto out3; 1908 } 1909 1910 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 1911 rv = AcpiSetCurrentResources(handle, &bufn); 1912 1913 if (ACPI_FAILURE(rv)) 1914 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 1915 "resources: %s\n", __func__, AcpiFormatException(rv)); 1916 1917 out3: 1918 free(bufn.Pointer, M_ACPI); 1919 out2: 1920 ACPI_FREE(bufc.Pointer); 1921 out1: 1922 ACPI_FREE(bufp.Pointer); 1923 out: 1924 return rv; 1925 } 1926 1927 #endif /* ACPI_ACTIVATE_DEV */ 1928