acpi.c revision 1.230
1 /* $NetBSD: acpi.c,v 1.230 2011/01/11 20:35:24 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 1.230 2011/01/11 20:35:24 jruoho Exp $"); 104 105 #include "opt_acpi.h" 106 #include "opt_pcifixup.h" 107 108 #include <sys/param.h> 109 #include <sys/device.h> 110 #include <sys/kernel.h> 111 #include <sys/malloc.h> 112 #include <sys/module.h> 113 #include <sys/mutex.h> 114 #include <sys/sysctl.h> 115 #include <sys/systm.h> 116 #include <sys/timetc.h> 117 118 #include <dev/acpi/acpireg.h> 119 #include <dev/acpi/acpivar.h> 120 #include <dev/acpi/acpi_osd.h> 121 #include <dev/acpi/acpi_pci.h> 122 #include <dev/acpi/acpi_power.h> 123 #include <dev/acpi/acpi_timer.h> 124 #include <dev/acpi/acpi_wakedev.h> 125 126 #define _COMPONENT ACPI_BUS_COMPONENT 127 ACPI_MODULE_NAME ("acpi") 128 129 #if defined(ACPI_PCI_FIXUP) 130 #error The option ACPI_PCI_FIXUP has been obsoleted by PCI_INTR_FIXUP_DISABLED. Please adjust your kernel configuration file. 131 #endif 132 133 #ifdef PCI_INTR_FIXUP_DISABLED 134 #include <dev/pci/pcidevs.h> 135 #endif 136 137 MALLOC_DECLARE(M_ACPI); 138 139 #include <machine/acpi_machdep.h> 140 141 #ifdef ACPI_DEBUGGER 142 #define ACPI_DBGR_INIT 0x01 143 #define ACPI_DBGR_TABLES 0x02 144 #define ACPI_DBGR_ENABLE 0x04 145 #define ACPI_DBGR_PROBE 0x08 146 #define ACPI_DBGR_RUNNING 0x10 147 148 static int acpi_dbgr = 0x00; 149 #endif 150 151 /* 152 * This is a flag we set when the ACPI subsystem is active. Machine 153 * dependent code may wish to skip other steps (such as attaching 154 * subsystems that ACPI supercedes) when ACPI is active. 155 */ 156 int acpi_active; 157 158 int acpi_force_load = 0; 159 int acpi_suspended = 0; 160 int acpi_verbose_loaded = 0; 161 162 struct acpi_softc *acpi_softc; 163 static uint64_t acpi_root_pointer; 164 extern kmutex_t acpi_interrupt_list_mtx; 165 extern struct cfdriver acpi_cd; 166 static ACPI_HANDLE acpi_scopes[4]; 167 ACPI_TABLE_HEADER *madt_header; 168 169 /* 170 * This structure provides a context for the ACPI 171 * namespace walk performed in acpi_build_tree(). 172 */ 173 struct acpi_walkcontext { 174 struct acpi_softc *aw_sc; 175 struct acpi_devnode *aw_parent; 176 }; 177 178 /* 179 * Ignored HIDs. 180 */ 181 static const char * const acpi_ignored_ids[] = { 182 #if defined(i386) || defined(x86_64) 183 "PNP0000", /* AT interrupt controller is handled internally */ 184 "PNP0200", /* AT DMA controller is handled internally */ 185 "PNP0A??", /* PCI Busses are handled internally */ 186 "PNP0B00", /* AT RTC is handled internally */ 187 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 188 #endif 189 #if defined(x86_64) 190 "PNP0C04", /* FPU is handled internally */ 191 #endif 192 NULL 193 }; 194 195 /* 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; 616 617 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 618 619 if (ad->ad_device == child) 620 ad->ad_device = NULL; 621 } 622 } 623 624 static bool 625 acpi_suspend(device_t dv, const pmf_qual_t *qual) 626 { 627 628 acpi_suspended = 1; 629 630 return true; 631 } 632 633 static bool 634 acpi_resume(device_t dv, const pmf_qual_t *qual) 635 { 636 637 acpi_suspended = 0; 638 639 return true; 640 } 641 642 /* 643 * Namespace scan. 644 */ 645 static void 646 acpi_build_tree(struct acpi_softc *sc) 647 { 648 struct acpi_walkcontext awc; 649 650 /* 651 * Get the root scope handles. 652 */ 653 KASSERT(__arraycount(acpi_scopes) == 4); 654 655 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 656 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 657 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 658 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 659 660 /* 661 * Make the root node. 662 */ 663 awc.aw_sc = sc; 664 awc.aw_parent = NULL; 665 666 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 667 668 KASSERT(sc->sc_root == NULL); 669 KASSERT(awc.aw_parent != NULL); 670 671 sc->sc_root = awc.aw_parent; 672 673 /* 674 * Build the internal namespace. 675 */ 676 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 677 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 678 679 /* 680 * Scan the internal namespace. 681 */ 682 (void)acpi_pcidev_scan(sc->sc_root); 683 (void)acpi_rescan(sc->sc_dev, NULL, NULL); 684 685 /* 686 * Defer rest of the configuration. 687 */ 688 (void)config_defer(sc->sc_dev, acpi_rescan_capabilities); 689 } 690 691 static ACPI_STATUS 692 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 693 void *context, void **status) 694 { 695 struct acpi_walkcontext *awc = context; 696 struct acpi_softc *sc = awc->aw_sc; 697 struct acpi_devnode *ad; 698 ACPI_DEVICE_INFO *devinfo; 699 ACPI_OBJECT_TYPE type; 700 ACPI_STATUS rv; 701 702 rv = AcpiGetObjectInfo(handle, &devinfo); 703 704 if (ACPI_FAILURE(rv)) 705 return AE_OK; /* Do not terminate the walk. */ 706 707 type = devinfo->Type; 708 709 switch (type) { 710 711 case ACPI_TYPE_DEVICE: 712 acpi_activate_device(handle, &devinfo); 713 case ACPI_TYPE_PROCESSOR: 714 case ACPI_TYPE_THERMAL: 715 case ACPI_TYPE_POWER: 716 717 ad = malloc(sizeof(*ad), M_ACPI, M_NOWAIT | M_ZERO); 718 719 if (ad == NULL) 720 return AE_NO_MEMORY; 721 722 ad->ad_device = NULL; 723 ad->ad_notify = NULL; 724 ad->ad_pciinfo = NULL; 725 726 ad->ad_type = type; 727 ad->ad_handle = handle; 728 ad->ad_devinfo = devinfo; 729 730 ad->ad_root = sc->sc_dev; 731 ad->ad_parent = awc->aw_parent; 732 733 acpi_set_node(ad); 734 acpi_make_name(ad, devinfo->Name); 735 736 SIMPLEQ_INIT(&ad->ad_child_head); 737 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 738 739 if (ad->ad_parent != NULL) { 740 741 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 742 ad, ad_child_list); 743 } 744 745 awc->aw_parent = ad; 746 } 747 748 return AE_OK; 749 } 750 751 static ACPI_STATUS 752 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 753 void *context, void **status) 754 { 755 struct acpi_walkcontext *awc = context; 756 757 KASSERT(awc != NULL); 758 KASSERT(awc->aw_parent != NULL); 759 760 if (handle == awc->aw_parent->ad_handle) 761 awc->aw_parent = awc->aw_parent->ad_parent; 762 763 return AE_OK; 764 } 765 766 static void 767 acpi_make_name(struct acpi_devnode *ad, uint32_t name) 768 { 769 ACPI_NAME_UNION *anu; 770 int clear, i; 771 772 anu = (ACPI_NAME_UNION *)&name; 773 ad->ad_name[4] = '\0'; 774 775 for (i = 3, clear = 0; i >= 0; i--) { 776 777 if (clear == 0 && anu->Ascii[i] == '_') 778 ad->ad_name[i] = '\0'; 779 else { 780 ad->ad_name[i] = anu->Ascii[i]; 781 clear = 1; 782 } 783 } 784 785 if (ad->ad_name[0] == '\0') 786 ad->ad_name[0] = '_'; 787 } 788 789 /* 790 * Device attachment. 791 */ 792 static int 793 acpi_rescan(device_t self, const char *ifattr, const int *locators) 794 { 795 struct acpi_softc *sc = device_private(self); 796 797 /* 798 * A two-pass scan for acpinodebus. 799 */ 800 if (ifattr_match(ifattr, "acpinodebus")) { 801 acpi_rescan_early(sc); 802 acpi_rescan_nodes(sc); 803 } 804 805 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 806 sc->sc_apmbus = config_found_ia(sc->sc_dev, 807 "acpiapmbus", NULL, NULL); 808 809 return 0; 810 } 811 812 static void 813 acpi_rescan_early(struct acpi_softc *sc) 814 { 815 struct acpi_attach_args aa; 816 struct acpi_devnode *ad; 817 818 /* 819 * First scan for devices such as acpiec(4) that 820 * should be always attached before anything else. 821 * We want these devices to attach regardless of 822 * the device status and other restrictions. 823 */ 824 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 825 826 if (ad->ad_device != NULL) 827 continue; 828 829 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 830 continue; 831 832 if (acpi_match_hid(ad->ad_devinfo, acpi_early_ids) == 0) 833 continue; 834 835 aa.aa_node = ad; 836 aa.aa_iot = sc->sc_iot; 837 aa.aa_memt = sc->sc_memt; 838 aa.aa_pc = sc->sc_pc; 839 aa.aa_pciflags = sc->sc_pciflags; 840 aa.aa_ic = sc->sc_ic; 841 842 ad->ad_device = config_found_ia(sc->sc_dev, 843 "acpinodebus", &aa, acpi_print); 844 } 845 } 846 847 static void 848 acpi_rescan_nodes(struct acpi_softc *sc) 849 { 850 struct acpi_attach_args aa; 851 struct acpi_devnode *ad; 852 ACPI_DEVICE_INFO *di; 853 854 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 855 856 if (ad->ad_device != NULL) 857 continue; 858 859 /* 860 * There is a bug in ACPICA: it defines the type 861 * of the scopes incorrectly for its own reasons. 862 */ 863 if (acpi_is_scope(ad) != false) 864 continue; 865 866 di = ad->ad_devinfo; 867 868 /* 869 * We only attach devices which are present, enabled, and 870 * functioning properly. However, if a device is enabled, 871 * it is decoding resources and we should claim these, 872 * if possible. This requires changes to bus_space(9). 873 * Note: there is a possible race condition, because _STA 874 * may have changed since di->CurrentStatus was set. 875 */ 876 if (di->Type == ACPI_TYPE_DEVICE) { 877 878 if ((di->Valid & ACPI_VALID_STA) != 0 && 879 (di->CurrentStatus & ACPI_STA_OK) != ACPI_STA_OK) 880 continue; 881 } 882 883 if (di->Type == ACPI_TYPE_POWER) 884 continue; 885 886 if (acpi_match_hid(di, acpi_early_ids) != 0) 887 continue; 888 889 if (acpi_match_hid(di, acpi_ignored_ids) != 0) 890 continue; 891 892 aa.aa_node = ad; 893 aa.aa_iot = sc->sc_iot; 894 aa.aa_memt = sc->sc_memt; 895 aa.aa_pc = sc->sc_pc; 896 aa.aa_pciflags = sc->sc_pciflags; 897 aa.aa_ic = sc->sc_ic; 898 899 ad->ad_device = config_found_ia(sc->sc_dev, 900 "acpinodebus", &aa, acpi_print); 901 } 902 } 903 904 static void 905 acpi_rescan_capabilities(device_t self) 906 { 907 struct acpi_softc *sc = device_private(self); 908 struct acpi_devnode *ad; 909 ACPI_HANDLE tmp; 910 ACPI_STATUS rv; 911 912 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 913 914 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 915 continue; 916 917 /* 918 * Scan power resource capabilities. 919 * 920 * If any power states are supported, 921 * at least _PR0 and _PR3 must be present. 922 */ 923 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 924 925 if (ACPI_SUCCESS(rv)) { 926 ad->ad_flags |= ACPI_DEVICE_POWER; 927 acpi_power_add(ad); 928 } 929 930 /* 931 * Scan wake-up capabilities. 932 */ 933 rv = AcpiGetHandle(ad->ad_handle, "_PRW", &tmp); 934 935 if (ACPI_SUCCESS(rv)) { 936 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 937 acpi_wakedev_add(ad); 938 } 939 940 /* 941 * Scan devices that are ejectable. 942 */ 943 rv = AcpiGetHandle(ad->ad_handle, "_EJ0", &tmp); 944 945 if (ACPI_SUCCESS(rv)) 946 ad->ad_flags |= ACPI_DEVICE_EJECT; 947 } 948 } 949 950 static int 951 acpi_print(void *aux, const char *pnp) 952 { 953 struct acpi_attach_args *aa = aux; 954 ACPI_STATUS rv; 955 956 if (pnp) { 957 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 958 char *pnpstr = 959 aa->aa_node->ad_devinfo->HardwareId.String; 960 ACPI_BUFFER buf; 961 962 aprint_normal("%s (%s) ", aa->aa_node->ad_name, 963 pnpstr); 964 965 rv = acpi_eval_struct(aa->aa_node->ad_handle, 966 "_STR", &buf); 967 if (ACPI_SUCCESS(rv)) { 968 ACPI_OBJECT *obj = buf.Pointer; 969 switch (obj->Type) { 970 case ACPI_TYPE_STRING: 971 aprint_normal("[%s] ", obj->String.Pointer); 972 break; 973 case ACPI_TYPE_BUFFER: 974 aprint_normal("buffer %p ", obj->Buffer.Pointer); 975 break; 976 default: 977 aprint_normal("type %u ",obj->Type); 978 break; 979 } 980 ACPI_FREE(buf.Pointer); 981 } 982 else 983 acpi_print_dev(pnpstr); 984 985 aprint_normal("at %s", pnp); 986 } else if (aa->aa_node->ad_devinfo->Type != ACPI_TYPE_DEVICE) { 987 aprint_normal("%s (ACPI Object Type '%s' " 988 "[0x%02x]) ", aa->aa_node->ad_name, 989 AcpiUtGetTypeName(aa->aa_node->ad_devinfo->Type), 990 aa->aa_node->ad_devinfo->Type); 991 aprint_normal("at %s", pnp); 992 } else 993 return 0; 994 } else { 995 aprint_normal(" (%s", aa->aa_node->ad_name); 996 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 997 aprint_normal(", %s", aa->aa_node->ad_devinfo->HardwareId.String); 998 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_UID) { 999 const char *uid; 1000 1001 uid = aa->aa_node->ad_devinfo->UniqueId.String; 1002 if (uid[0] == '\0') 1003 uid = "<null>"; 1004 aprint_normal("-%s", uid); 1005 } 1006 } 1007 aprint_normal(")"); 1008 } 1009 1010 return UNCONF; 1011 } 1012 1013 /* 1014 * Notify. 1015 */ 1016 static void 1017 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1018 { 1019 struct acpi_softc *sc = acpi_softc; 1020 struct acpi_devnode *ad; 1021 1022 KASSERT(sc != NULL); 1023 KASSERT(aux == NULL); 1024 KASSERT(acpi_active != 0); 1025 1026 if (acpi_suspended != 0) 1027 return; 1028 1029 /* 1030 * System: 0x00 - 0x7F. 1031 * Device: 0x80 - 0xFF. 1032 */ 1033 switch (event) { 1034 1035 case ACPI_NOTIFY_BUS_CHECK: 1036 case ACPI_NOTIFY_DEVICE_CHECK: 1037 case ACPI_NOTIFY_DEVICE_WAKE: 1038 case ACPI_NOTIFY_EJECT_REQUEST: 1039 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1040 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1041 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1042 case ACPI_NOTIFY_POWER_FAULT: 1043 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1044 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1045 case ACPI_NOTIFY_RESERVED: 1046 case ACPI_NOTIFY_LOCALITY_UPDATE: 1047 break; 1048 } 1049 1050 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1051 "%s (%p)\n", event, acpi_name(handle), handle)); 1052 1053 /* 1054 * We deliver notifications only to drivers 1055 * that have been succesfully attached and 1056 * that have registered a handler with us. 1057 * The opaque pointer is always the device_t. 1058 */ 1059 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1060 1061 if (ad->ad_device == NULL) 1062 continue; 1063 1064 if (ad->ad_notify == NULL) 1065 continue; 1066 1067 if (ad->ad_handle != handle) 1068 continue; 1069 1070 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1071 1072 return; 1073 } 1074 1075 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1076 "for %s (%p)\n", event, acpi_name(handle), handle); 1077 } 1078 1079 bool 1080 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1081 { 1082 struct acpi_softc *sc = acpi_softc; 1083 1084 KASSERT(sc != NULL); 1085 KASSERT(acpi_active != 0); 1086 1087 if (acpi_suspended != 0) 1088 goto fail; 1089 1090 if (ad == NULL || notify == NULL) 1091 goto fail; 1092 1093 ad->ad_notify = notify; 1094 1095 return true; 1096 1097 fail: 1098 aprint_error_dev(sc->sc_dev, "failed to register notify " 1099 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1100 1101 return false; 1102 } 1103 1104 void 1105 acpi_deregister_notify(struct acpi_devnode *ad) 1106 { 1107 1108 ad->ad_notify = NULL; 1109 } 1110 1111 /* 1112 * Fixed buttons. 1113 */ 1114 static void 1115 acpi_register_fixed_button(struct acpi_softc *sc, int event) 1116 { 1117 struct sysmon_pswitch *smpsw; 1118 ACPI_STATUS rv; 1119 int type; 1120 1121 switch (event) { 1122 1123 case ACPI_EVENT_POWER_BUTTON: 1124 1125 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1126 return; 1127 1128 type = PSWITCH_TYPE_POWER; 1129 smpsw = &sc->sc_smpsw_power; 1130 break; 1131 1132 case ACPI_EVENT_SLEEP_BUTTON: 1133 1134 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1135 return; 1136 1137 type = PSWITCH_TYPE_SLEEP; 1138 smpsw = &sc->sc_smpsw_sleep; 1139 break; 1140 1141 default: 1142 rv = AE_TYPE; 1143 goto fail; 1144 } 1145 1146 smpsw->smpsw_type = type; 1147 smpsw->smpsw_name = device_xname(sc->sc_dev); 1148 1149 if (sysmon_pswitch_register(smpsw) != 0) { 1150 rv = AE_ERROR; 1151 goto fail; 1152 } 1153 1154 rv = AcpiInstallFixedEventHandler(event, 1155 acpi_fixed_button_handler, smpsw); 1156 1157 if (ACPI_FAILURE(rv)) { 1158 sysmon_pswitch_unregister(smpsw); 1159 goto fail; 1160 } 1161 1162 aprint_debug_dev(sc->sc_dev, "fixed %s button present\n", 1163 (type != ACPI_EVENT_SLEEP_BUTTON) ? "power" : "sleep"); 1164 1165 return; 1166 1167 fail: 1168 aprint_error_dev(sc->sc_dev, "failed to register " 1169 "fixed event: %s\n", AcpiFormatException(rv)); 1170 } 1171 1172 static void 1173 acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1174 { 1175 struct sysmon_pswitch *smpsw; 1176 ACPI_STATUS rv; 1177 1178 switch (event) { 1179 1180 case ACPI_EVENT_POWER_BUTTON: 1181 smpsw = &sc->sc_smpsw_power; 1182 1183 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1184 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1185 return; 1186 } 1187 1188 break; 1189 1190 case ACPI_EVENT_SLEEP_BUTTON: 1191 smpsw = &sc->sc_smpsw_sleep; 1192 1193 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1194 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1195 return; 1196 } 1197 1198 break; 1199 1200 default: 1201 rv = AE_TYPE; 1202 goto fail; 1203 } 1204 1205 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1206 1207 if (ACPI_SUCCESS(rv)) { 1208 sysmon_pswitch_unregister(smpsw); 1209 return; 1210 } 1211 1212 fail: 1213 aprint_error_dev(sc->sc_dev, "failed to deregister " 1214 "fixed event: %s\n", AcpiFormatException(rv)); 1215 } 1216 1217 static uint32_t 1218 acpi_fixed_button_handler(void *context) 1219 { 1220 static const int handler = OSL_NOTIFY_HANDLER; 1221 struct sysmon_pswitch *smpsw = context; 1222 1223 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1224 1225 return ACPI_INTERRUPT_HANDLED; 1226 } 1227 1228 static void 1229 acpi_fixed_button_pressed(void *context) 1230 { 1231 struct sysmon_pswitch *smpsw = context; 1232 1233 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1234 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1235 "power" : "sleep")); 1236 1237 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1238 } 1239 1240 /* 1241 * Sleep. 1242 */ 1243 static void 1244 acpi_sleep_init(struct acpi_softc *sc) 1245 { 1246 uint8_t a, b, i; 1247 ACPI_STATUS rv; 1248 1249 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1250 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1251 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1252 1253 /* 1254 * Evaluate supported sleep states. 1255 */ 1256 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1257 1258 rv = AcpiGetSleepTypeData(i, &a, &b); 1259 1260 if (ACPI_SUCCESS(rv)) 1261 sc->sc_sleepstates |= __BIT(i); 1262 } 1263 } 1264 1265 /* 1266 * Must be called with interrupts enabled. 1267 */ 1268 void 1269 acpi_enter_sleep_state(int state) 1270 { 1271 struct acpi_softc *sc = acpi_softc; 1272 ACPI_STATUS rv; 1273 int err; 1274 1275 if (acpi_softc == NULL) 1276 return; 1277 1278 if (state == sc->sc_sleepstate) 1279 return; 1280 1281 if (state < ACPI_STATE_S0 || state > ACPI_STATE_S5) 1282 return; 1283 1284 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1285 1286 switch (state) { 1287 1288 case ACPI_STATE_S0: 1289 sc->sc_sleepstate = ACPI_STATE_S0; 1290 return; 1291 1292 case ACPI_STATE_S1: 1293 case ACPI_STATE_S2: 1294 case ACPI_STATE_S3: 1295 case ACPI_STATE_S4: 1296 1297 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1298 aprint_error_dev(sc->sc_dev, "sleep state " 1299 "S%d is not available\n", state); 1300 return; 1301 } 1302 1303 /* 1304 * Evaluate the _TTS method. This should be done before 1305 * pmf_system_suspend(9) and the evaluation of _PTS. 1306 * We should also re-evaluate this once we return to 1307 * S0 or if we abort the sleep state transition in the 1308 * middle (see ACPI 3.0, section 7.3.6). In reality, 1309 * however, the _TTS method is seldom seen in the field. 1310 */ 1311 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1312 1313 if (ACPI_SUCCESS(rv)) 1314 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1315 1316 if (state != ACPI_STATE_S1 && 1317 pmf_system_suspend(PMF_Q_NONE) != true) { 1318 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1319 break; 1320 } 1321 1322 /* 1323 * This will evaluate the _PTS and _SST methods, 1324 * but unlike the documentation claims, not _GTS, 1325 * which is evaluated in AcpiEnterSleepState(). 1326 * This must be called with interrupts enabled. 1327 */ 1328 rv = AcpiEnterSleepStatePrep(state); 1329 1330 if (ACPI_FAILURE(rv)) { 1331 aprint_error_dev(sc->sc_dev, "failed to prepare " 1332 "S%d: %s\n", state, AcpiFormatException(rv)); 1333 break; 1334 } 1335 1336 /* 1337 * After the _PTS method has been evaluated, we can 1338 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1339 */ 1340 acpi_wakedev_commit(sc, state); 1341 1342 sc->sc_sleepstate = state; 1343 1344 if (state == ACPI_STATE_S1) { 1345 1346 /* Just enter the state. */ 1347 acpi_md_OsDisableInterrupt(); 1348 rv = AcpiEnterSleepState(state); 1349 1350 if (ACPI_FAILURE(rv)) 1351 aprint_error_dev(sc->sc_dev, "failed to " 1352 "enter S1: %s\n", AcpiFormatException(rv)); 1353 1354 (void)AcpiLeaveSleepState(state); 1355 1356 } else { 1357 1358 err = acpi_md_sleep(state); 1359 1360 if (state == ACPI_STATE_S4) 1361 AcpiEnable(); 1362 1363 pmf_system_bus_resume(PMF_Q_NONE); 1364 (void)AcpiLeaveSleepState(state); 1365 pmf_system_resume(PMF_Q_NONE); 1366 } 1367 1368 break; 1369 1370 case ACPI_STATE_S5: 1371 1372 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1373 1374 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1375 1376 if (ACPI_FAILURE(rv)) { 1377 aprint_error_dev(sc->sc_dev, "failed to prepare " 1378 "S%d: %s\n", state, AcpiFormatException(rv)); 1379 break; 1380 } 1381 1382 (void)AcpiDisableAllGpes(); 1383 1384 DELAY(1000000); 1385 1386 sc->sc_sleepstate = state; 1387 acpi_md_OsDisableInterrupt(); 1388 1389 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1390 1391 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1392 1393 break; 1394 } 1395 1396 sc->sc_sleepstate = ACPI_STATE_S0; 1397 1398 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1399 } 1400 1401 /* 1402 * Sysctl. 1403 */ 1404 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1405 { 1406 const struct sysctlnode *mnode, *rnode, *snode; 1407 int err; 1408 1409 err = sysctl_createv(clog, 0, NULL, &rnode, 1410 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", 1411 NULL, NULL, 0, NULL, 0, 1412 CTL_HW, CTL_EOL); 1413 1414 if (err != 0) 1415 return; 1416 1417 err = sysctl_createv(clog, 0, &rnode, &rnode, 1418 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1419 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1420 NULL, 0, NULL, 0, 1421 CTL_CREATE, CTL_EOL); 1422 1423 if (err != 0) 1424 return; 1425 1426 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1427 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1428 "root", SYSCTL_DESCR("ACPI root pointer"), 1429 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1430 CTL_CREATE, CTL_EOL); 1431 1432 err = sysctl_createv(clog, 0, &rnode, &snode, 1433 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1434 "sleep", SYSCTL_DESCR("ACPI sleep"), 1435 NULL, 0, NULL, 0, 1436 CTL_CREATE, CTL_EOL); 1437 1438 if (err != 0) 1439 return; 1440 1441 (void)sysctl_createv(NULL, 0, &snode, NULL, 1442 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1443 "state", SYSCTL_DESCR("System sleep state"), 1444 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1445 CTL_CREATE, CTL_EOL); 1446 1447 (void)sysctl_createv(NULL, 0, &snode, NULL, 1448 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1449 "states", SYSCTL_DESCR("Supported sleep states"), 1450 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1451 CTL_CREATE, CTL_EOL); 1452 1453 /* 1454 * For the time being, machdep.sleep_state 1455 * is provided for backwards compatibility. 1456 */ 1457 err = sysctl_createv(NULL, 0, NULL, &mnode, 1458 CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep", 1459 NULL, NULL, 0, NULL, 0, 1460 CTL_MACHDEP, CTL_EOL); 1461 1462 if (err == 0) { 1463 1464 (void)sysctl_createv(NULL, 0, &mnode, NULL, 1465 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1466 "sleep_state", SYSCTL_DESCR("System sleep state"), 1467 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1468 CTL_CREATE, CTL_EOL); 1469 } 1470 1471 err = sysctl_createv(clog, 0, &rnode, &rnode, 1472 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1473 "stat", SYSCTL_DESCR("ACPI statistics"), 1474 NULL, 0, NULL, 0, 1475 CTL_CREATE, CTL_EOL); 1476 1477 if (err != 0) 1478 return; 1479 1480 (void)sysctl_createv(clog, 0, &rnode, NULL, 1481 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1482 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1483 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1484 CTL_CREATE, CTL_EOL); 1485 1486 (void)sysctl_createv(clog, 0, &rnode, NULL, 1487 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1488 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1489 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1490 CTL_CREATE, CTL_EOL); 1491 1492 (void)sysctl_createv(clog, 0, &rnode, NULL, 1493 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1494 "fixed", SYSCTL_DESCR("Number of fixed events"), 1495 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1496 CTL_CREATE, CTL_EOL); 1497 1498 (void)sysctl_createv(clog, 0, &rnode, NULL, 1499 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1500 "method", SYSCTL_DESCR("Number of methods executed"), 1501 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1502 CTL_CREATE, CTL_EOL); 1503 1504 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1505 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1506 } 1507 1508 static int 1509 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1510 { 1511 struct sysctlnode node; 1512 uint64_t t; 1513 int err, i; 1514 1515 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1516 t += AcpiFixedEventCount[i]; 1517 1518 node = *rnode; 1519 node.sysctl_data = &t; 1520 1521 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1522 1523 if (err || newp == NULL) 1524 return err; 1525 1526 return 0; 1527 } 1528 1529 static int 1530 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1531 { 1532 struct acpi_softc *sc = acpi_softc; 1533 struct sysctlnode node; 1534 int err, t; 1535 1536 if (acpi_softc == NULL) 1537 return ENOSYS; 1538 1539 node = *rnode; 1540 t = sc->sc_sleepstate; 1541 node.sysctl_data = &t; 1542 1543 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1544 1545 if (err || newp == NULL) 1546 return err; 1547 1548 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1549 return EINVAL; 1550 1551 acpi_enter_sleep_state(t); 1552 1553 return 0; 1554 } 1555 1556 static int 1557 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1558 { 1559 struct acpi_softc *sc = acpi_softc; 1560 struct sysctlnode node; 1561 char t[3 * 6 + 1]; 1562 int err; 1563 1564 if (acpi_softc == NULL) 1565 return ENOSYS; 1566 1567 (void)memset(t, '\0', sizeof(t)); 1568 1569 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1570 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1571 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1572 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1573 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1574 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1575 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1576 1577 node = *rnode; 1578 node.sysctl_data = &t; 1579 1580 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1581 1582 if (err || newp == NULL) 1583 return err; 1584 1585 return 0; 1586 } 1587 1588 /* 1589 * Tables. 1590 */ 1591 ACPI_PHYSICAL_ADDRESS 1592 acpi_OsGetRootPointer(void) 1593 { 1594 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1595 1596 /* 1597 * We let MD code handle this since there are multiple ways to do it: 1598 * 1599 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1600 * 1601 * IA-64: Use the EFI. 1602 */ 1603 PhysicalAddress = acpi_md_OsGetRootPointer(); 1604 1605 if (acpi_root_pointer == 0) 1606 acpi_root_pointer = PhysicalAddress; 1607 1608 return PhysicalAddress; 1609 } 1610 1611 static ACPI_TABLE_HEADER * 1612 acpi_map_rsdt(void) 1613 { 1614 ACPI_PHYSICAL_ADDRESS paddr; 1615 ACPI_TABLE_RSDP *rsdp; 1616 1617 paddr = AcpiOsGetRootPointer(); 1618 1619 if (paddr == 0) 1620 return NULL; 1621 1622 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1623 1624 if (rsdp == NULL) 1625 return NULL; 1626 1627 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1628 paddr = rsdp->XsdtPhysicalAddress; 1629 else 1630 paddr = rsdp->RsdtPhysicalAddress; 1631 1632 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1633 1634 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1635 } 1636 1637 static void 1638 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1639 { 1640 1641 if (rsdt == NULL) 1642 return; 1643 1644 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1645 } 1646 1647 /* 1648 * XXX: Refactor to be a generic function that maps tables. 1649 */ 1650 ACPI_STATUS 1651 acpi_madt_map(void) 1652 { 1653 ACPI_STATUS rv; 1654 1655 if (madt_header != NULL) 1656 return AE_ALREADY_EXISTS; 1657 1658 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); 1659 1660 if (ACPI_FAILURE(rv)) 1661 return rv; 1662 1663 return AE_OK; 1664 } 1665 1666 void 1667 acpi_madt_unmap(void) 1668 { 1669 madt_header = NULL; 1670 } 1671 1672 /* 1673 * XXX: Refactor to be a generic function that walks tables. 1674 */ 1675 void 1676 acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) 1677 { 1678 ACPI_SUBTABLE_HEADER *hdrp; 1679 char *madtend, *where; 1680 1681 madtend = (char *)madt_header + madt_header->Length; 1682 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); 1683 1684 while (where < madtend) { 1685 1686 hdrp = (ACPI_SUBTABLE_HEADER *)where; 1687 1688 if (ACPI_FAILURE(func(hdrp, aux))) 1689 break; 1690 1691 where += hdrp->Length; 1692 } 1693 } 1694 1695 /* 1696 * Miscellaneous. 1697 */ 1698 static bool 1699 acpi_is_scope(struct acpi_devnode *ad) 1700 { 1701 int i; 1702 1703 /* 1704 * Return true if the node is a root scope. 1705 */ 1706 if (ad->ad_parent == NULL) 1707 return false; 1708 1709 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1710 return false; 1711 1712 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1713 1714 if (acpi_scopes[i] == NULL) 1715 continue; 1716 1717 if (ad->ad_handle == acpi_scopes[i]) 1718 return true; 1719 } 1720 1721 return false; 1722 } 1723 1724 /* 1725 * ACPIVERBOSE. 1726 */ 1727 void 1728 acpi_load_verbose(void) 1729 { 1730 1731 if (acpi_verbose_loaded == 0) 1732 module_autoload("acpiverbose", MODULE_CLASS_MISC); 1733 } 1734 1735 void 1736 acpi_print_verbose_stub(struct acpi_softc *sc) 1737 { 1738 1739 acpi_load_verbose(); 1740 1741 if (acpi_verbose_loaded != 0) 1742 acpi_print_verbose(sc); 1743 } 1744 1745 void 1746 acpi_print_dev_stub(const char *pnpstr) 1747 { 1748 1749 acpi_load_verbose(); 1750 1751 if (acpi_verbose_loaded != 0) 1752 acpi_print_dev(pnpstr); 1753 } 1754 1755 /* 1756 * ACPI_ACTIVATE_DEV. 1757 */ 1758 static void 1759 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 1760 { 1761 1762 #ifndef ACPI_ACTIVATE_DEV 1763 return; 1764 } 1765 #else 1766 static const int valid = ACPI_VALID_STA | ACPI_VALID_HID; 1767 ACPI_DEVICE_INFO *newdi; 1768 ACPI_STATUS rv; 1769 uint32_t old; 1770 1771 /* 1772 * If the device is valid and present, 1773 * but not enabled, try to activate it. 1774 */ 1775 if (((*di)->Valid & valid) != valid) 1776 return; 1777 1778 old = (*di)->CurrentStatus; 1779 1780 if ((old & (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED)) != 1781 ACPI_STA_DEVICE_PRESENT) 1782 return; 1783 1784 rv = acpi_allocate_resources(handle); 1785 1786 if (ACPI_FAILURE(rv)) 1787 goto fail; 1788 1789 rv = AcpiGetObjectInfo(handle, &newdi); 1790 1791 if (ACPI_FAILURE(rv)) 1792 goto fail; 1793 1794 ACPI_FREE(*di); 1795 *di = newdi; 1796 1797 aprint_verbose_dev(acpi_softc->sc_dev, 1798 "%s activated, STA 0x%08X -> STA 0x%08X\n", 1799 (*di)->HardwareId.String, old, (*di)->CurrentStatus); 1800 1801 return; 1802 1803 fail: 1804 aprint_error_dev(acpi_softc->sc_dev, "failed to " 1805 "activate %s\n", (*di)->HardwareId.String); 1806 } 1807 1808 /* 1809 * XXX: This very incomplete. 1810 */ 1811 ACPI_STATUS 1812 acpi_allocate_resources(ACPI_HANDLE handle) 1813 { 1814 ACPI_BUFFER bufp, bufc, bufn; 1815 ACPI_RESOURCE *resp, *resc, *resn; 1816 ACPI_RESOURCE_IRQ *irq; 1817 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 1818 ACPI_STATUS rv; 1819 uint delta; 1820 1821 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 1822 if (ACPI_FAILURE(rv)) 1823 goto out; 1824 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 1825 if (ACPI_FAILURE(rv)) { 1826 goto out1; 1827 } 1828 1829 bufn.Length = 1000; 1830 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 1831 resp = bufp.Pointer; 1832 resc = bufc.Pointer; 1833 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 1834 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1835 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 1836 resp = ACPI_NEXT_RESOURCE(resp); 1837 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 1838 break; 1839 /* Found identical Id */ 1840 resn->Type = resc->Type; 1841 switch (resc->Type) { 1842 case ACPI_RESOURCE_TYPE_IRQ: 1843 memcpy(&resn->Data, &resp->Data, 1844 sizeof(ACPI_RESOURCE_IRQ)); 1845 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 1846 irq->Interrupts[0] = 1847 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 1848 Interrupts[irq->InterruptCount-1]; 1849 irq->InterruptCount = 1; 1850 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 1851 break; 1852 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 1853 memcpy(&resn->Data, &resp->Data, 1854 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 1855 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 1856 #if 0 1857 /* 1858 * XXX: Not duplicating the interrupt logic above 1859 * because its not clear what it accomplishes. 1860 */ 1861 xirq->Interrupts[0] = 1862 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 1863 Interrupts[irq->NumberOfInterrupts-1]; 1864 xirq->NumberOfInterrupts = 1; 1865 #endif 1866 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 1867 break; 1868 case ACPI_RESOURCE_TYPE_IO: 1869 memcpy(&resn->Data, &resp->Data, 1870 sizeof(ACPI_RESOURCE_IO)); 1871 resn->Length = resp->Length; 1872 break; 1873 default: 1874 aprint_error_dev(acpi_softc->sc_dev, 1875 "%s: invalid type %u\n", __func__, resc->Type); 1876 rv = AE_BAD_DATA; 1877 goto out2; 1878 } 1879 resc = ACPI_NEXT_RESOURCE(resc); 1880 resn = ACPI_NEXT_RESOURCE(resn); 1881 resp = ACPI_NEXT_RESOURCE(resp); 1882 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 1883 if (delta >= 1884 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 1885 bufn.Length *= 2; 1886 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 1887 M_ACPI, M_WAITOK); 1888 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 1889 delta); 1890 } 1891 } 1892 1893 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1894 aprint_error_dev(acpi_softc->sc_dev, 1895 "%s: resc not exhausted\n", __func__); 1896 rv = AE_BAD_DATA; 1897 goto out3; 1898 } 1899 1900 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 1901 rv = AcpiSetCurrentResources(handle, &bufn); 1902 1903 if (ACPI_FAILURE(rv)) 1904 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 1905 "resources: %s\n", __func__, AcpiFormatException(rv)); 1906 1907 out3: 1908 free(bufn.Pointer, M_ACPI); 1909 out2: 1910 ACPI_FREE(bufc.Pointer); 1911 out1: 1912 ACPI_FREE(bufp.Pointer); 1913 out: 1914 return rv; 1915 } 1916 1917 #endif /* ACPI_ACTIVATE_DEV */ 1918
Indexes created Wed Oct 01 19:09:53 GMT 2025