acpi.c revision 1.237
1 /* $NetBSD: acpi.c,v 1.237 2011/02/19 09:52:32 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 1.237 2011/02/19 09:52:32 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 * Update GPE information. 689 * 690 * Note that this must be called after 691 * all GPE handlers have been installed. 692 */ 693 (void)AcpiUpdateAllGpes(); 694 695 /* 696 * Defer rest of the configuration. 697 */ 698 (void)config_defer(sc->sc_dev, acpi_rescan_capabilities); 699 } 700 701 static ACPI_STATUS 702 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 703 void *context, void **status) 704 { 705 struct acpi_walkcontext *awc = context; 706 struct acpi_softc *sc = awc->aw_sc; 707 struct acpi_devnode *ad; 708 ACPI_DEVICE_INFO *devinfo; 709 ACPI_OBJECT_TYPE type; 710 ACPI_STATUS rv; 711 712 rv = AcpiGetObjectInfo(handle, &devinfo); 713 714 if (ACPI_FAILURE(rv)) 715 return AE_OK; /* Do not terminate the walk. */ 716 717 type = devinfo->Type; 718 719 switch (type) { 720 721 case ACPI_TYPE_DEVICE: 722 acpi_activate_device(handle, &devinfo); 723 case ACPI_TYPE_PROCESSOR: 724 case ACPI_TYPE_THERMAL: 725 case ACPI_TYPE_POWER: 726 727 ad = malloc(sizeof(*ad), M_ACPI, M_NOWAIT | M_ZERO); 728 729 if (ad == NULL) 730 return AE_NO_MEMORY; 731 732 ad->ad_device = NULL; 733 ad->ad_notify = NULL; 734 ad->ad_pciinfo = NULL; 735 ad->ad_wakedev = NULL; 736 737 ad->ad_type = type; 738 ad->ad_handle = handle; 739 ad->ad_devinfo = devinfo; 740 741 ad->ad_root = sc->sc_dev; 742 ad->ad_parent = awc->aw_parent; 743 744 acpi_set_node(ad); 745 acpi_make_name(ad, devinfo->Name); 746 747 /* 748 * Identify wake GPEs from the _PRW. Note that 749 * AcpiUpdateAllGpes() must be called afterwards. 750 */ 751 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) 752 acpi_wakedev_init(ad); 753 754 SIMPLEQ_INIT(&ad->ad_child_head); 755 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 756 757 if (ad->ad_parent != NULL) { 758 759 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 760 ad, ad_child_list); 761 } 762 763 awc->aw_parent = ad; 764 } 765 766 return AE_OK; 767 } 768 769 static ACPI_STATUS 770 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 771 void *context, void **status) 772 { 773 struct acpi_walkcontext *awc = context; 774 775 KASSERT(awc != NULL); 776 KASSERT(awc->aw_parent != NULL); 777 778 if (handle == awc->aw_parent->ad_handle) 779 awc->aw_parent = awc->aw_parent->ad_parent; 780 781 return AE_OK; 782 } 783 784 static void 785 acpi_make_name(struct acpi_devnode *ad, uint32_t name) 786 { 787 ACPI_NAME_UNION *anu; 788 int clear, i; 789 790 anu = (ACPI_NAME_UNION *)&name; 791 ad->ad_name[4] = '\0'; 792 793 for (i = 3, clear = 0; i >= 0; i--) { 794 795 if (clear == 0 && anu->Ascii[i] == '_') 796 ad->ad_name[i] = '\0'; 797 else { 798 ad->ad_name[i] = anu->Ascii[i]; 799 clear = 1; 800 } 801 } 802 803 if (ad->ad_name[0] == '\0') 804 ad->ad_name[0] = '_'; 805 } 806 807 /* 808 * Device attachment. 809 */ 810 static int 811 acpi_rescan(device_t self, const char *ifattr, const int *locators) 812 { 813 struct acpi_softc *sc = device_private(self); 814 815 /* 816 * A two-pass scan for acpinodebus. 817 */ 818 if (ifattr_match(ifattr, "acpinodebus")) { 819 acpi_rescan_early(sc); 820 acpi_rescan_nodes(sc); 821 } 822 823 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 824 sc->sc_apmbus = config_found_ia(sc->sc_dev, 825 "acpiapmbus", NULL, NULL); 826 827 if (ifattr_match(ifattr, "acpiwdrtbus") && sc->sc_wdrt == NULL) 828 sc->sc_wdrt = config_found_ia(sc->sc_dev, 829 "acpiwdrtbus", NULL, NULL); 830 831 return 0; 832 } 833 834 static void 835 acpi_rescan_early(struct acpi_softc *sc) 836 { 837 struct acpi_attach_args aa; 838 struct acpi_devnode *ad; 839 840 /* 841 * First scan for devices such as acpiec(4) that 842 * should be always attached before anything else. 843 * We want these devices to attach regardless of 844 * the device status and other restrictions. 845 */ 846 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 847 848 if (ad->ad_device != NULL) 849 continue; 850 851 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 852 continue; 853 854 if (acpi_match_hid(ad->ad_devinfo, acpi_early_ids) == 0) 855 continue; 856 857 aa.aa_node = ad; 858 aa.aa_iot = sc->sc_iot; 859 aa.aa_memt = sc->sc_memt; 860 aa.aa_pc = sc->sc_pc; 861 aa.aa_pciflags = sc->sc_pciflags; 862 aa.aa_ic = sc->sc_ic; 863 864 ad->ad_device = config_found_ia(sc->sc_dev, 865 "acpinodebus", &aa, acpi_print); 866 } 867 } 868 869 static void 870 acpi_rescan_nodes(struct acpi_softc *sc) 871 { 872 const uint32_t ncpus = acpi_md_ncpus(); 873 struct acpi_attach_args aa; 874 struct acpi_devnode *ad; 875 ACPI_DEVICE_INFO *di; 876 877 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 878 879 if (ad->ad_device != NULL) 880 continue; 881 882 /* 883 * There is a bug in ACPICA: it defines the type 884 * of the scopes incorrectly for its own reasons. 885 */ 886 if (acpi_is_scope(ad) != false) 887 continue; 888 889 di = ad->ad_devinfo; 890 891 /* 892 * We only attach devices which are present, enabled, and 893 * functioning properly. However, if a device is enabled, 894 * it is decoding resources and we should claim these, 895 * if possible. This requires changes to bus_space(9). 896 * Note: there is a possible race condition, because _STA 897 * may have changed since di->CurrentStatus was set. 898 */ 899 if (di->Type == ACPI_TYPE_DEVICE) { 900 901 if ((di->Valid & ACPI_VALID_STA) != 0 && 902 (di->CurrentStatus & ACPI_STA_OK) != ACPI_STA_OK) 903 continue; 904 } 905 906 if (di->Type == ACPI_TYPE_POWER) 907 continue; 908 909 if (di->Type == ACPI_TYPE_PROCESSOR && acpi_cpus >= ncpus) 910 continue; 911 912 if (acpi_match_hid(di, acpi_early_ids) != 0) 913 continue; 914 915 if (acpi_match_hid(di, acpi_ignored_ids) != 0) 916 continue; 917 918 aa.aa_node = ad; 919 aa.aa_iot = sc->sc_iot; 920 aa.aa_memt = sc->sc_memt; 921 aa.aa_pc = sc->sc_pc; 922 aa.aa_pciflags = sc->sc_pciflags; 923 aa.aa_ic = sc->sc_ic; 924 925 ad->ad_device = config_found_ia(sc->sc_dev, 926 "acpinodebus", &aa, acpi_print); 927 } 928 } 929 930 static void 931 acpi_rescan_capabilities(device_t self) 932 { 933 struct acpi_softc *sc = device_private(self); 934 struct acpi_devnode *ad; 935 ACPI_HANDLE tmp; 936 ACPI_STATUS rv; 937 938 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 939 940 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 941 continue; 942 943 /* 944 * Scan power resource capabilities. 945 * 946 * If any power states are supported, 947 * at least _PR0 and _PR3 must be present. 948 */ 949 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 950 951 if (ACPI_SUCCESS(rv)) { 952 ad->ad_flags |= ACPI_DEVICE_POWER; 953 acpi_power_add(ad); 954 } 955 956 /* 957 * Scan wake-up capabilities. 958 */ 959 if (ad->ad_wakedev != NULL) { 960 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 961 acpi_wakedev_add(ad); 962 } 963 964 /* 965 * Scan docking stations. 966 */ 967 rv = AcpiGetHandle(ad->ad_handle, "_DCK", &tmp); 968 969 if (ACPI_SUCCESS(rv)) 970 ad->ad_flags |= ACPI_DEVICE_DOCK; 971 972 /* 973 * Scan devices that are ejectable. 974 */ 975 rv = AcpiGetHandle(ad->ad_handle, "_EJ0", &tmp); 976 977 if (ACPI_SUCCESS(rv)) 978 ad->ad_flags |= ACPI_DEVICE_EJECT; 979 } 980 } 981 982 static int 983 acpi_print(void *aux, const char *pnp) 984 { 985 struct acpi_attach_args *aa = aux; 986 struct acpi_devnode *ad; 987 const char *hid, *uid; 988 ACPI_DEVICE_INFO *di; 989 990 ad = aa->aa_node; 991 di = ad->ad_devinfo; 992 993 hid = di->HardwareId.String; 994 uid = di->UniqueId.String; 995 996 if (pnp != NULL) { 997 998 if (di->Type != ACPI_TYPE_DEVICE) { 999 1000 aprint_normal("%s (ACPI Object Type '%s') at %s", 1001 ad->ad_name, AcpiUtGetTypeName(ad->ad_type), pnp); 1002 1003 return UNCONF; 1004 } 1005 1006 if ((di->Valid & ACPI_VALID_HID) == 0 || hid == NULL) 1007 return 0; 1008 1009 aprint_normal("%s (%s) ", ad->ad_name, hid); 1010 acpi_print_dev(hid); 1011 aprint_normal("at %s", pnp); 1012 1013 return UNCONF; 1014 } 1015 1016 aprint_normal(" (%s", ad->ad_name); 1017 1018 if ((di->Valid & ACPI_VALID_HID) != 0 && hid != NULL) { 1019 1020 aprint_normal(", %s", hid); 1021 1022 if ((di->Valid & ACPI_VALID_UID) != 0 && uid != NULL) { 1023 1024 if (uid[0] == '\0') 1025 uid = "<null>"; 1026 1027 aprint_normal("-%s", uid); 1028 } 1029 } 1030 1031 aprint_normal(")"); 1032 1033 return UNCONF; 1034 } 1035 1036 /* 1037 * Notify. 1038 */ 1039 static void 1040 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1041 { 1042 struct acpi_softc *sc = acpi_softc; 1043 struct acpi_devnode *ad; 1044 1045 KASSERT(sc != NULL); 1046 KASSERT(aux == NULL); 1047 KASSERT(acpi_active != 0); 1048 1049 if (acpi_suspended != 0) 1050 return; 1051 1052 /* 1053 * System: 0x00 - 0x7F. 1054 * Device: 0x80 - 0xFF. 1055 */ 1056 switch (event) { 1057 1058 case ACPI_NOTIFY_BUS_CHECK: 1059 case ACPI_NOTIFY_DEVICE_CHECK: 1060 case ACPI_NOTIFY_DEVICE_WAKE: 1061 case ACPI_NOTIFY_EJECT_REQUEST: 1062 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1063 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1064 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1065 case ACPI_NOTIFY_POWER_FAULT: 1066 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1067 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1068 case ACPI_NOTIFY_RESERVED: 1069 case ACPI_NOTIFY_LOCALITY_UPDATE: 1070 break; 1071 } 1072 1073 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1074 "%s (%p)\n", event, acpi_name(handle), handle)); 1075 1076 /* 1077 * We deliver notifications only to drivers 1078 * that have been succesfully attached and 1079 * that have registered a handler with us. 1080 * The opaque pointer is always the device_t. 1081 */ 1082 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1083 1084 if (ad->ad_device == NULL) 1085 continue; 1086 1087 if (ad->ad_notify == NULL) 1088 continue; 1089 1090 if (ad->ad_handle != handle) 1091 continue; 1092 1093 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1094 1095 return; 1096 } 1097 1098 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1099 "for %s (%p)\n", event, acpi_name(handle), handle); 1100 } 1101 1102 bool 1103 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1104 { 1105 struct acpi_softc *sc = acpi_softc; 1106 1107 KASSERT(sc != NULL); 1108 KASSERT(acpi_active != 0); 1109 1110 if (acpi_suspended != 0) 1111 goto fail; 1112 1113 if (ad == NULL || notify == NULL) 1114 goto fail; 1115 1116 ad->ad_notify = notify; 1117 1118 return true; 1119 1120 fail: 1121 aprint_error_dev(sc->sc_dev, "failed to register notify " 1122 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1123 1124 return false; 1125 } 1126 1127 void 1128 acpi_deregister_notify(struct acpi_devnode *ad) 1129 { 1130 1131 ad->ad_notify = NULL; 1132 } 1133 1134 /* 1135 * Fixed buttons. 1136 */ 1137 static void 1138 acpi_register_fixed_button(struct acpi_softc *sc, int event) 1139 { 1140 struct sysmon_pswitch *smpsw; 1141 ACPI_STATUS rv; 1142 int type; 1143 1144 switch (event) { 1145 1146 case ACPI_EVENT_POWER_BUTTON: 1147 1148 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1149 return; 1150 1151 type = PSWITCH_TYPE_POWER; 1152 smpsw = &sc->sc_smpsw_power; 1153 break; 1154 1155 case ACPI_EVENT_SLEEP_BUTTON: 1156 1157 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1158 return; 1159 1160 type = PSWITCH_TYPE_SLEEP; 1161 smpsw = &sc->sc_smpsw_sleep; 1162 break; 1163 1164 default: 1165 rv = AE_TYPE; 1166 goto fail; 1167 } 1168 1169 smpsw->smpsw_type = type; 1170 smpsw->smpsw_name = device_xname(sc->sc_dev); 1171 1172 if (sysmon_pswitch_register(smpsw) != 0) { 1173 rv = AE_ERROR; 1174 goto fail; 1175 } 1176 1177 rv = AcpiInstallFixedEventHandler(event, 1178 acpi_fixed_button_handler, smpsw); 1179 1180 if (ACPI_FAILURE(rv)) { 1181 sysmon_pswitch_unregister(smpsw); 1182 goto fail; 1183 } 1184 1185 aprint_debug_dev(sc->sc_dev, "fixed %s button present\n", 1186 (type != ACPI_EVENT_SLEEP_BUTTON) ? "power" : "sleep"); 1187 1188 return; 1189 1190 fail: 1191 aprint_error_dev(sc->sc_dev, "failed to register " 1192 "fixed event: %s\n", AcpiFormatException(rv)); 1193 } 1194 1195 static void 1196 acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1197 { 1198 struct sysmon_pswitch *smpsw; 1199 ACPI_STATUS rv; 1200 1201 switch (event) { 1202 1203 case ACPI_EVENT_POWER_BUTTON: 1204 smpsw = &sc->sc_smpsw_power; 1205 1206 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1207 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1208 return; 1209 } 1210 1211 break; 1212 1213 case ACPI_EVENT_SLEEP_BUTTON: 1214 smpsw = &sc->sc_smpsw_sleep; 1215 1216 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1217 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1218 return; 1219 } 1220 1221 break; 1222 1223 default: 1224 rv = AE_TYPE; 1225 goto fail; 1226 } 1227 1228 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1229 1230 if (ACPI_SUCCESS(rv)) { 1231 sysmon_pswitch_unregister(smpsw); 1232 return; 1233 } 1234 1235 fail: 1236 aprint_error_dev(sc->sc_dev, "failed to deregister " 1237 "fixed event: %s\n", AcpiFormatException(rv)); 1238 } 1239 1240 static uint32_t 1241 acpi_fixed_button_handler(void *context) 1242 { 1243 static const int handler = OSL_NOTIFY_HANDLER; 1244 struct sysmon_pswitch *smpsw = context; 1245 1246 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1247 1248 return ACPI_INTERRUPT_HANDLED; 1249 } 1250 1251 static void 1252 acpi_fixed_button_pressed(void *context) 1253 { 1254 struct sysmon_pswitch *smpsw = context; 1255 1256 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1257 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1258 "power" : "sleep")); 1259 1260 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1261 } 1262 1263 /* 1264 * Sleep. 1265 */ 1266 static void 1267 acpi_sleep_init(struct acpi_softc *sc) 1268 { 1269 uint8_t a, b, i; 1270 ACPI_STATUS rv; 1271 1272 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1273 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1274 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1275 1276 /* 1277 * Evaluate supported sleep states. 1278 */ 1279 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1280 1281 rv = AcpiGetSleepTypeData(i, &a, &b); 1282 1283 if (ACPI_SUCCESS(rv)) 1284 sc->sc_sleepstates |= __BIT(i); 1285 } 1286 } 1287 1288 /* 1289 * Must be called with interrupts enabled. 1290 */ 1291 void 1292 acpi_enter_sleep_state(int state) 1293 { 1294 struct acpi_softc *sc = acpi_softc; 1295 ACPI_STATUS rv; 1296 int err; 1297 1298 if (acpi_softc == NULL) 1299 return; 1300 1301 if (state == sc->sc_sleepstate) 1302 return; 1303 1304 if (state < ACPI_STATE_S0 || state > ACPI_STATE_S5) 1305 return; 1306 1307 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1308 1309 switch (state) { 1310 1311 case ACPI_STATE_S0: 1312 sc->sc_sleepstate = ACPI_STATE_S0; 1313 return; 1314 1315 case ACPI_STATE_S1: 1316 case ACPI_STATE_S2: 1317 case ACPI_STATE_S3: 1318 case ACPI_STATE_S4: 1319 1320 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1321 aprint_error_dev(sc->sc_dev, "sleep state " 1322 "S%d is not available\n", state); 1323 return; 1324 } 1325 1326 /* 1327 * Evaluate the _TTS method. This should be done before 1328 * pmf_system_suspend(9) and the evaluation of _PTS. 1329 * We should also re-evaluate this once we return to 1330 * S0 or if we abort the sleep state transition in the 1331 * middle (see ACPI 3.0, section 7.3.6). In reality, 1332 * however, the _TTS method is seldom seen in the field. 1333 */ 1334 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1335 1336 if (ACPI_SUCCESS(rv)) 1337 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1338 1339 if (state != ACPI_STATE_S1 && 1340 pmf_system_suspend(PMF_Q_NONE) != true) { 1341 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1342 break; 1343 } 1344 1345 /* 1346 * This will evaluate the _PTS and _SST methods, 1347 * but unlike the documentation claims, not _GTS, 1348 * which is evaluated in AcpiEnterSleepState(). 1349 * This must be called with interrupts enabled. 1350 */ 1351 rv = AcpiEnterSleepStatePrep(state); 1352 1353 if (ACPI_FAILURE(rv)) { 1354 aprint_error_dev(sc->sc_dev, "failed to prepare " 1355 "S%d: %s\n", state, AcpiFormatException(rv)); 1356 break; 1357 } 1358 1359 /* 1360 * After the _PTS method has been evaluated, we can 1361 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1362 */ 1363 acpi_wakedev_commit(sc, state); 1364 1365 sc->sc_sleepstate = state; 1366 1367 if (state == ACPI_STATE_S1) { 1368 1369 /* Just enter the state. */ 1370 acpi_md_OsDisableInterrupt(); 1371 rv = AcpiEnterSleepState(state); 1372 1373 if (ACPI_FAILURE(rv)) 1374 aprint_error_dev(sc->sc_dev, "failed to " 1375 "enter S1: %s\n", AcpiFormatException(rv)); 1376 1377 (void)AcpiLeaveSleepState(state); 1378 1379 } else { 1380 1381 err = acpi_md_sleep(state); 1382 1383 if (state == ACPI_STATE_S4) 1384 AcpiEnable(); 1385 1386 (void)pmf_system_bus_resume(PMF_Q_NONE); 1387 (void)AcpiLeaveSleepState(state); 1388 (void)AcpiSetFirmwareWakingVector(0); 1389 (void)pmf_system_resume(PMF_Q_NONE); 1390 } 1391 1392 acpi_wakedev_commit(sc, ACPI_STATE_S0); 1393 break; 1394 1395 case ACPI_STATE_S5: 1396 1397 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1398 1399 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1400 1401 if (ACPI_FAILURE(rv)) { 1402 aprint_error_dev(sc->sc_dev, "failed to prepare " 1403 "S%d: %s\n", state, AcpiFormatException(rv)); 1404 break; 1405 } 1406 1407 (void)AcpiDisableAllGpes(); 1408 1409 DELAY(1000000); 1410 1411 sc->sc_sleepstate = state; 1412 acpi_md_OsDisableInterrupt(); 1413 1414 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1415 1416 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1417 1418 break; 1419 } 1420 1421 sc->sc_sleepstate = ACPI_STATE_S0; 1422 1423 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1424 } 1425 1426 /* 1427 * Sysctl. 1428 */ 1429 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1430 { 1431 const struct sysctlnode *mnode, *rnode, *snode; 1432 int err; 1433 1434 err = sysctl_createv(clog, 0, NULL, &rnode, 1435 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", 1436 NULL, NULL, 0, NULL, 0, 1437 CTL_HW, CTL_EOL); 1438 1439 if (err != 0) 1440 return; 1441 1442 err = sysctl_createv(clog, 0, &rnode, &rnode, 1443 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1444 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1445 NULL, 0, NULL, 0, 1446 CTL_CREATE, CTL_EOL); 1447 1448 if (err != 0) 1449 return; 1450 1451 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1452 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1453 "root", SYSCTL_DESCR("ACPI root pointer"), 1454 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1455 CTL_CREATE, CTL_EOL); 1456 1457 err = sysctl_createv(clog, 0, &rnode, &snode, 1458 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1459 "sleep", SYSCTL_DESCR("ACPI sleep"), 1460 NULL, 0, NULL, 0, 1461 CTL_CREATE, CTL_EOL); 1462 1463 if (err != 0) 1464 return; 1465 1466 (void)sysctl_createv(NULL, 0, &snode, NULL, 1467 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1468 "state", SYSCTL_DESCR("System sleep state"), 1469 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1470 CTL_CREATE, CTL_EOL); 1471 1472 (void)sysctl_createv(NULL, 0, &snode, NULL, 1473 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1474 "states", SYSCTL_DESCR("Supported sleep states"), 1475 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1476 CTL_CREATE, CTL_EOL); 1477 1478 /* 1479 * For the time being, machdep.sleep_state 1480 * is provided for backwards compatibility. 1481 */ 1482 err = sysctl_createv(NULL, 0, NULL, &mnode, 1483 CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep", 1484 NULL, NULL, 0, NULL, 0, 1485 CTL_MACHDEP, CTL_EOL); 1486 1487 if (err == 0) { 1488 1489 (void)sysctl_createv(NULL, 0, &mnode, NULL, 1490 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1491 "sleep_state", SYSCTL_DESCR("System sleep state"), 1492 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1493 CTL_CREATE, CTL_EOL); 1494 } 1495 1496 err = sysctl_createv(clog, 0, &rnode, &rnode, 1497 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1498 "stat", SYSCTL_DESCR("ACPI statistics"), 1499 NULL, 0, NULL, 0, 1500 CTL_CREATE, CTL_EOL); 1501 1502 if (err != 0) 1503 return; 1504 1505 (void)sysctl_createv(clog, 0, &rnode, NULL, 1506 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1507 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1508 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1509 CTL_CREATE, CTL_EOL); 1510 1511 (void)sysctl_createv(clog, 0, &rnode, NULL, 1512 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1513 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1514 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1515 CTL_CREATE, CTL_EOL); 1516 1517 (void)sysctl_createv(clog, 0, &rnode, NULL, 1518 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1519 "fixed", SYSCTL_DESCR("Number of fixed events"), 1520 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1521 CTL_CREATE, CTL_EOL); 1522 1523 (void)sysctl_createv(clog, 0, &rnode, NULL, 1524 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1525 "method", SYSCTL_DESCR("Number of methods executed"), 1526 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1527 CTL_CREATE, CTL_EOL); 1528 1529 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1530 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1531 } 1532 1533 static int 1534 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1535 { 1536 struct sysctlnode node; 1537 uint64_t t; 1538 int err, i; 1539 1540 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1541 t += AcpiFixedEventCount[i]; 1542 1543 node = *rnode; 1544 node.sysctl_data = &t; 1545 1546 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1547 1548 if (err || newp == NULL) 1549 return err; 1550 1551 return 0; 1552 } 1553 1554 static int 1555 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1556 { 1557 struct acpi_softc *sc = acpi_softc; 1558 struct sysctlnode node; 1559 int err, t; 1560 1561 if (acpi_softc == NULL) 1562 return ENOSYS; 1563 1564 node = *rnode; 1565 t = sc->sc_sleepstate; 1566 node.sysctl_data = &t; 1567 1568 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1569 1570 if (err || newp == NULL) 1571 return err; 1572 1573 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1574 return EINVAL; 1575 1576 acpi_enter_sleep_state(t); 1577 1578 return 0; 1579 } 1580 1581 static int 1582 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1583 { 1584 struct acpi_softc *sc = acpi_softc; 1585 struct sysctlnode node; 1586 char t[3 * 6 + 1]; 1587 int err; 1588 1589 if (acpi_softc == NULL) 1590 return ENOSYS; 1591 1592 (void)memset(t, '\0', sizeof(t)); 1593 1594 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1595 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1596 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1597 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1598 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1599 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1600 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1601 1602 node = *rnode; 1603 node.sysctl_data = &t; 1604 1605 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1606 1607 if (err || newp == NULL) 1608 return err; 1609 1610 return 0; 1611 } 1612 1613 /* 1614 * Tables. 1615 */ 1616 ACPI_PHYSICAL_ADDRESS 1617 acpi_OsGetRootPointer(void) 1618 { 1619 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1620 1621 /* 1622 * We let MD code handle this since there are multiple ways to do it: 1623 * 1624 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1625 * 1626 * IA-64: Use the EFI. 1627 */ 1628 PhysicalAddress = acpi_md_OsGetRootPointer(); 1629 1630 if (acpi_root_pointer == 0) 1631 acpi_root_pointer = PhysicalAddress; 1632 1633 return PhysicalAddress; 1634 } 1635 1636 static ACPI_TABLE_HEADER * 1637 acpi_map_rsdt(void) 1638 { 1639 ACPI_PHYSICAL_ADDRESS paddr; 1640 ACPI_TABLE_RSDP *rsdp; 1641 1642 paddr = AcpiOsGetRootPointer(); 1643 1644 if (paddr == 0) 1645 return NULL; 1646 1647 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1648 1649 if (rsdp == NULL) 1650 return NULL; 1651 1652 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1653 paddr = rsdp->XsdtPhysicalAddress; 1654 else 1655 paddr = rsdp->RsdtPhysicalAddress; 1656 1657 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1658 1659 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1660 } 1661 1662 static void 1663 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1664 { 1665 1666 if (rsdt == NULL) 1667 return; 1668 1669 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1670 } 1671 1672 /* 1673 * XXX: Refactor to be a generic function that maps tables. 1674 */ 1675 ACPI_STATUS 1676 acpi_madt_map(void) 1677 { 1678 ACPI_STATUS rv; 1679 1680 if (madt_header != NULL) 1681 return AE_ALREADY_EXISTS; 1682 1683 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); 1684 1685 if (ACPI_FAILURE(rv)) 1686 return rv; 1687 1688 return AE_OK; 1689 } 1690 1691 void 1692 acpi_madt_unmap(void) 1693 { 1694 madt_header = NULL; 1695 } 1696 1697 /* 1698 * XXX: Refactor to be a generic function that walks tables. 1699 */ 1700 void 1701 acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) 1702 { 1703 ACPI_SUBTABLE_HEADER *hdrp; 1704 char *madtend, *where; 1705 1706 madtend = (char *)madt_header + madt_header->Length; 1707 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); 1708 1709 while (where < madtend) { 1710 1711 hdrp = (ACPI_SUBTABLE_HEADER *)where; 1712 1713 if (ACPI_FAILURE(func(hdrp, aux))) 1714 break; 1715 1716 where += hdrp->Length; 1717 } 1718 } 1719 1720 /* 1721 * Miscellaneous. 1722 */ 1723 static bool 1724 acpi_is_scope(struct acpi_devnode *ad) 1725 { 1726 int i; 1727 1728 /* 1729 * Return true if the node is a root scope. 1730 */ 1731 if (ad->ad_parent == NULL) 1732 return false; 1733 1734 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1735 return false; 1736 1737 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1738 1739 if (acpi_scopes[i] == NULL) 1740 continue; 1741 1742 if (ad->ad_handle == acpi_scopes[i]) 1743 return true; 1744 } 1745 1746 return false; 1747 } 1748 1749 /* 1750 * ACPIVERBOSE. 1751 */ 1752 void 1753 acpi_load_verbose(void) 1754 { 1755 1756 if (acpi_verbose_loaded == 0) 1757 module_autoload("acpiverbose", MODULE_CLASS_MISC); 1758 } 1759 1760 void 1761 acpi_print_verbose_stub(struct acpi_softc *sc) 1762 { 1763 1764 acpi_load_verbose(); 1765 1766 if (acpi_verbose_loaded != 0) 1767 acpi_print_verbose(sc); 1768 } 1769 1770 void 1771 acpi_print_dev_stub(const char *pnpstr) 1772 { 1773 1774 acpi_load_verbose(); 1775 1776 if (acpi_verbose_loaded != 0) 1777 acpi_print_dev(pnpstr); 1778 } 1779 1780 /* 1781 * ACPI_ACTIVATE_DEV. 1782 */ 1783 static void 1784 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 1785 { 1786 1787 #ifndef ACPI_ACTIVATE_DEV 1788 return; 1789 } 1790 #else 1791 static const int valid = ACPI_VALID_STA | ACPI_VALID_HID; 1792 ACPI_DEVICE_INFO *newdi; 1793 ACPI_STATUS rv; 1794 uint32_t old; 1795 1796 /* 1797 * If the device is valid and present, 1798 * but not enabled, try to activate it. 1799 */ 1800 if (((*di)->Valid & valid) != valid) 1801 return; 1802 1803 old = (*di)->CurrentStatus; 1804 1805 if ((old & (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED)) != 1806 ACPI_STA_DEVICE_PRESENT) 1807 return; 1808 1809 rv = acpi_allocate_resources(handle); 1810 1811 if (ACPI_FAILURE(rv)) 1812 goto fail; 1813 1814 rv = AcpiGetObjectInfo(handle, &newdi); 1815 1816 if (ACPI_FAILURE(rv)) 1817 goto fail; 1818 1819 ACPI_FREE(*di); 1820 *di = newdi; 1821 1822 aprint_verbose_dev(acpi_softc->sc_dev, 1823 "%s activated, STA 0x%08X -> STA 0x%08X\n", 1824 (*di)->HardwareId.String, old, (*di)->CurrentStatus); 1825 1826 return; 1827 1828 fail: 1829 aprint_error_dev(acpi_softc->sc_dev, "failed to " 1830 "activate %s\n", (*di)->HardwareId.String); 1831 } 1832 1833 /* 1834 * XXX: This very incomplete. 1835 */ 1836 ACPI_STATUS 1837 acpi_allocate_resources(ACPI_HANDLE handle) 1838 { 1839 ACPI_BUFFER bufp, bufc, bufn; 1840 ACPI_RESOURCE *resp, *resc, *resn; 1841 ACPI_RESOURCE_IRQ *irq; 1842 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 1843 ACPI_STATUS rv; 1844 uint delta; 1845 1846 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 1847 if (ACPI_FAILURE(rv)) 1848 goto out; 1849 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 1850 if (ACPI_FAILURE(rv)) { 1851 goto out1; 1852 } 1853 1854 bufn.Length = 1000; 1855 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 1856 resp = bufp.Pointer; 1857 resc = bufc.Pointer; 1858 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 1859 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1860 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 1861 resp = ACPI_NEXT_RESOURCE(resp); 1862 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 1863 break; 1864 /* Found identical Id */ 1865 resn->Type = resc->Type; 1866 switch (resc->Type) { 1867 case ACPI_RESOURCE_TYPE_IRQ: 1868 memcpy(&resn->Data, &resp->Data, 1869 sizeof(ACPI_RESOURCE_IRQ)); 1870 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 1871 irq->Interrupts[0] = 1872 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 1873 Interrupts[irq->InterruptCount-1]; 1874 irq->InterruptCount = 1; 1875 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 1876 break; 1877 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 1878 memcpy(&resn->Data, &resp->Data, 1879 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 1880 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 1881 #if 0 1882 /* 1883 * XXX: Not duplicating the interrupt logic above 1884 * because its not clear what it accomplishes. 1885 */ 1886 xirq->Interrupts[0] = 1887 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 1888 Interrupts[irq->NumberOfInterrupts-1]; 1889 xirq->NumberOfInterrupts = 1; 1890 #endif 1891 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 1892 break; 1893 case ACPI_RESOURCE_TYPE_IO: 1894 memcpy(&resn->Data, &resp->Data, 1895 sizeof(ACPI_RESOURCE_IO)); 1896 resn->Length = resp->Length; 1897 break; 1898 default: 1899 aprint_error_dev(acpi_softc->sc_dev, 1900 "%s: invalid type %u\n", __func__, resc->Type); 1901 rv = AE_BAD_DATA; 1902 goto out2; 1903 } 1904 resc = ACPI_NEXT_RESOURCE(resc); 1905 resn = ACPI_NEXT_RESOURCE(resn); 1906 resp = ACPI_NEXT_RESOURCE(resp); 1907 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 1908 if (delta >= 1909 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 1910 bufn.Length *= 2; 1911 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 1912 M_ACPI, M_WAITOK); 1913 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 1914 delta); 1915 } 1916 } 1917 1918 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1919 aprint_error_dev(acpi_softc->sc_dev, 1920 "%s: resc not exhausted\n", __func__); 1921 rv = AE_BAD_DATA; 1922 goto out3; 1923 } 1924 1925 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 1926 rv = AcpiSetCurrentResources(handle, &bufn); 1927 1928 if (ACPI_FAILURE(rv)) 1929 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 1930 "resources: %s\n", __func__, AcpiFormatException(rv)); 1931 1932 out3: 1933 free(bufn.Pointer, M_ACPI); 1934 out2: 1935 ACPI_FREE(bufc.Pointer); 1936 out1: 1937 ACPI_FREE(bufp.Pointer); 1938 out: 1939 return rv; 1940 } 1941 1942 #endif /* ACPI_ACTIVATE_DEV */ 1943
Indexes created Wed Sep 24 05:09:52 GMT 2025