acpi.c revision 1.246
1 /* $NetBSD: acpi.c,v 1.246 2011/06/21 03:37:21 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 1.246 2011/06/21 03:37:21 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/kmem.h> 112 #include <sys/malloc.h> 113 #include <sys/module.h> 114 #include <sys/mutex.h> 115 #include <sys/sysctl.h> 116 #include <sys/systm.h> 117 #include <sys/timetc.h> 118 119 #include <dev/acpi/acpireg.h> 120 #include <dev/acpi/acpivar.h> 121 #include <dev/acpi/acpi_osd.h> 122 #include <dev/acpi/acpi_pci.h> 123 #include <dev/acpi/acpi_power.h> 124 #include <dev/acpi/acpi_timer.h> 125 #include <dev/acpi/acpi_wakedev.h> 126 127 #include <machine/acpi_machdep.h> 128 129 #define _COMPONENT ACPI_BUS_COMPONENT 130 ACPI_MODULE_NAME ("acpi") 131 132 /* 133 * The acpi_active variable is set when the ACPI subsystem is active. 134 * Machine-dependent code may wish to skip other steps (such as attaching 135 * subsystems that ACPI supercedes) when ACPI is active. 136 */ 137 int acpi_active = 0; 138 int acpi_suspended = 0; 139 int acpi_force_load = 0; 140 int acpi_verbose_loaded = 0; 141 142 struct acpi_softc *acpi_softc = NULL; 143 static uint64_t acpi_root_pointer; 144 extern kmutex_t acpi_interrupt_list_mtx; 145 extern struct cfdriver acpi_cd; 146 static ACPI_HANDLE acpi_scopes[4]; 147 ACPI_TABLE_HEADER *madt_header; 148 149 /* 150 * This structure provides a context for the ACPI 151 * namespace walk performed in acpi_build_tree(). 152 */ 153 struct acpi_walkcontext { 154 struct acpi_softc *aw_sc; 155 struct acpi_devnode *aw_parent; 156 }; 157 158 /* 159 * Ignored HIDs. 160 */ 161 static const char * const acpi_ignored_ids[] = { 162 #if defined(i386) || defined(x86_64) 163 "ACPI0007", /* ACPI CPUs do not attach to acpi(4) */ 164 "PNP0000", /* AT interrupt controller is handled internally */ 165 "PNP0200", /* AT DMA controller is handled internally */ 166 "PNP0A??", /* PCI Busses are handled internally */ 167 "PNP0B00", /* AT RTC is handled internally */ 168 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 169 #endif 170 #if defined(x86_64) 171 "PNP0C04", /* FPU is handled internally */ 172 #endif 173 NULL 174 }; 175 176 /* 177 * Devices that should be attached early. 178 */ 179 static const char * const acpi_early_ids[] = { 180 "PNP0C09", /* acpiec(4) */ 181 NULL 182 }; 183 184 static int acpi_match(device_t, cfdata_t, void *); 185 static int acpi_submatch(device_t, cfdata_t, const int *, void *); 186 static void acpi_attach(device_t, device_t, void *); 187 static int acpi_detach(device_t, int); 188 static void acpi_childdet(device_t, device_t); 189 static bool acpi_suspend(device_t, const pmf_qual_t *); 190 static bool acpi_resume(device_t, const pmf_qual_t *); 191 192 static void acpi_build_tree(struct acpi_softc *); 193 static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, 194 void *, void **); 195 static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t, 196 void *, void **); 197 static void acpi_make_name(struct acpi_devnode *, uint32_t); 198 199 static int acpi_rescan(device_t, const char *, const int *); 200 static void acpi_rescan_early(struct acpi_softc *); 201 static void acpi_rescan_nodes(struct acpi_softc *); 202 static void acpi_rescan_capabilities(device_t); 203 static int acpi_print(void *aux, const char *); 204 205 static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); 206 207 static void acpi_register_fixed_button(struct acpi_softc *, int); 208 static void acpi_deregister_fixed_button(struct acpi_softc *, int); 209 static uint32_t acpi_fixed_button_handler(void *); 210 static void acpi_fixed_button_pressed(void *); 211 212 static void acpi_sleep_init(struct acpi_softc *); 213 214 static int sysctl_hw_acpi_fixedstats(SYSCTLFN_PROTO); 215 static int sysctl_hw_acpi_sleepstate(SYSCTLFN_PROTO); 216 static int sysctl_hw_acpi_sleepstates(SYSCTLFN_PROTO); 217 218 static bool acpi_is_scope(struct acpi_devnode *); 219 static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 220 static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 221 222 void acpi_print_verbose_stub(struct acpi_softc *); 223 void acpi_print_dev_stub(const char *); 224 225 static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **); 226 ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE); 227 228 void (*acpi_print_verbose)(struct acpi_softc *) = acpi_print_verbose_stub; 229 void (*acpi_print_dev)(const char *) = acpi_print_dev_stub; 230 231 CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 232 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 233 234 /* 235 * Probe for ACPI support. 236 * 237 * This is called by the machine-dependent ACPI front-end. 238 * Note: this is not an autoconfiguration interface function. 239 */ 240 int 241 acpi_probe(void) 242 { 243 ACPI_TABLE_HEADER *rsdt; 244 ACPI_STATUS rv; 245 int quirks; 246 247 if (acpi_softc != NULL) 248 panic("%s: already probed", __func__); 249 250 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 251 252 /* 253 * Start up ACPICA. 254 */ 255 AcpiGbl_AllMethodsSerialized = false; 256 AcpiGbl_EnableInterpreterSlack = true; 257 258 rv = AcpiInitializeSubsystem(); 259 260 if (ACPI_FAILURE(rv)) { 261 aprint_error("%s: failed to initialize subsystem\n", __func__); 262 return 0; 263 } 264 265 /* 266 * Allocate space for RSDT/XSDT and DSDT, 267 * but allow resizing if more tables exist. 268 */ 269 rv = AcpiInitializeTables(NULL, 2, true); 270 271 if (ACPI_FAILURE(rv)) { 272 aprint_error("%s: failed to initialize tables\n", __func__); 273 goto fail; 274 } 275 276 rv = AcpiLoadTables(); 277 278 if (ACPI_FAILURE(rv)) { 279 aprint_error("%s: failed to load tables\n", __func__); 280 goto fail; 281 } 282 283 rsdt = acpi_map_rsdt(); 284 285 if (rsdt == NULL) { 286 aprint_error("%s: failed to map RSDT\n", __func__); 287 goto fail; 288 } 289 290 quirks = acpi_find_quirks(); 291 292 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_BROKEN) != 0) { 293 294 aprint_normal("ACPI: BIOS is listed as broken:\n"); 295 aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 296 "AslId <%4.4s,%08x>\n", rsdt->OemId, rsdt->OemTableId, 297 rsdt->OemRevision, rsdt->AslCompilerId, 298 rsdt->AslCompilerRevision); 299 aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n"); 300 301 acpi_unmap_rsdt(rsdt); 302 goto fail; 303 } 304 305 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_OLDBIOS) != 0) { 306 307 aprint_normal("ACPI: BIOS is too old (%s). " 308 "Set acpi_force_load to use.\n", 309 pmf_get_platform("firmware-date")); 310 311 acpi_unmap_rsdt(rsdt); 312 goto fail; 313 } 314 315 acpi_unmap_rsdt(rsdt); 316 317 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 318 319 if (ACPI_FAILURE(rv)) { 320 aprint_error("%s: failed to enable subsystem\n", __func__); 321 goto fail; 322 } 323 324 return 1; 325 326 fail: 327 (void)AcpiTerminate(); 328 329 return 0; 330 } 331 332 void 333 acpi_disable(void) 334 { 335 336 if (acpi_softc == NULL) 337 return; 338 339 KASSERT(acpi_active != 0); 340 341 if (AcpiGbl_FADT.SmiCommand != 0) 342 AcpiDisable(); 343 } 344 345 int 346 acpi_check(device_t parent, const char *ifattr) 347 { 348 return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); 349 } 350 351 /* 352 * Autoconfiguration. 353 */ 354 static int 355 acpi_match(device_t parent, cfdata_t match, void *aux) 356 { 357 /* 358 * XXX: Nada; MD code has called acpi_probe(). 359 */ 360 return 1; 361 } 362 363 static int 364 acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 365 { 366 struct cfattach *ca; 367 368 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 369 370 return (ca == &acpi_ca); 371 } 372 373 static void 374 acpi_attach(device_t parent, device_t self, void *aux) 375 { 376 struct acpi_softc *sc = device_private(self); 377 struct acpibus_attach_args *aa = aux; 378 ACPI_TABLE_HEADER *rsdt; 379 ACPI_STATUS rv; 380 381 aprint_naive("\n"); 382 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 383 384 if (acpi_softc != NULL) 385 panic("%s: already attached", __func__); 386 387 rsdt = acpi_map_rsdt(); 388 389 if (rsdt == NULL) 390 aprint_error_dev(self, "X/RSDT: Not found\n"); 391 else { 392 aprint_verbose_dev(self, 393 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 394 rsdt->OemId, rsdt->OemTableId, 395 rsdt->OemRevision, 396 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 397 } 398 399 acpi_unmap_rsdt(rsdt); 400 401 sc->sc_dev = self; 402 sc->sc_root = NULL; 403 404 sc->sc_sleepstate = ACPI_STATE_S0; 405 sc->sc_quirks = acpi_find_quirks(); 406 407 sysmon_power_settype("acpi"); 408 409 sc->sc_iot = aa->aa_iot; 410 sc->sc_memt = aa->aa_memt; 411 sc->sc_pc = aa->aa_pc; 412 sc->sc_pciflags = aa->aa_pciflags; 413 sc->sc_ic = aa->aa_ic; 414 415 SIMPLEQ_INIT(&sc->ad_head); 416 417 acpi_softc = sc; 418 419 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) 420 aprint_error_dev(self, "couldn't establish power handler\n"); 421 422 /* 423 * Bring ACPICA on-line. 424 */ 425 #define ACPI_ENABLE_PHASE1 \ 426 (ACPI_NO_HANDLER_INIT | ACPI_NO_EVENT_INIT) 427 #define ACPI_ENABLE_PHASE2 \ 428 (ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE | \ 429 ACPI_NO_ADDRESS_SPACE_INIT) 430 431 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE1); 432 433 if (ACPI_FAILURE(rv)) 434 goto fail; 435 436 acpi_md_callback(); 437 438 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE2); 439 440 if (ACPI_FAILURE(rv)) 441 goto fail; 442 443 /* 444 * Early initialization of acpiec(4) via ECDT. 445 */ 446 (void)config_found_ia(self, "acpiecdtbus", aa, NULL); 447 448 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 449 450 if (ACPI_FAILURE(rv)) 451 goto fail; 452 453 /* 454 * Early initialization of the _PDC control method 455 * that may load additional SSDT tables dynamically. 456 */ 457 (void)acpi_md_pdc(); 458 459 /* 460 * Install global notify handlers. 461 */ 462 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 463 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 464 465 if (ACPI_FAILURE(rv)) 466 goto fail; 467 468 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 469 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 470 471 if (ACPI_FAILURE(rv)) 472 goto fail; 473 474 acpi_active = 1; 475 476 /* Show SCI interrupt. */ 477 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 478 AcpiGbl_FADT.SciInterrupt); 479 480 /* 481 * Install fixed-event handlers. 482 */ 483 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 484 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 485 486 acpitimer_init(sc); 487 488 /* 489 * Scan the namespace and build our device tree. 490 */ 491 acpi_build_tree(sc); 492 acpi_sleep_init(sc); 493 494 #ifdef ACPI_DEBUG 495 acpi_debug_init(); 496 #endif 497 498 /* 499 * Print debug information. 500 */ 501 acpi_print_verbose(sc); 502 503 return; 504 505 fail: 506 aprint_error("%s: failed to initialize ACPI: %s\n", 507 __func__, AcpiFormatException(rv)); 508 } 509 510 /* 511 * XXX: This is incomplete. 512 */ 513 static int 514 acpi_detach(device_t self, int flags) 515 { 516 struct acpi_softc *sc = device_private(self); 517 ACPI_STATUS rv; 518 int rc; 519 520 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 521 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 522 523 if (ACPI_FAILURE(rv)) 524 return EBUSY; 525 526 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 527 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 528 529 if (ACPI_FAILURE(rv)) 530 return EBUSY; 531 532 if ((rc = config_detach_children(self, flags)) != 0) 533 return rc; 534 535 if ((rc = acpitimer_detach()) != 0) 536 return rc; 537 538 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 539 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 540 541 pmf_device_deregister(self); 542 543 acpi_softc = NULL; 544 545 return 0; 546 } 547 548 static void 549 acpi_childdet(device_t self, device_t child) 550 { 551 struct acpi_softc *sc = device_private(self); 552 struct acpi_devnode *ad; 553 554 if (sc->sc_apmbus == child) 555 sc->sc_apmbus = NULL; 556 557 if (sc->sc_hpet == child) 558 sc->sc_hpet = NULL; 559 560 if (sc->sc_wdrt == child) 561 sc->sc_wdrt = NULL; 562 563 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 564 565 if (ad->ad_device == child) 566 ad->ad_device = NULL; 567 } 568 } 569 570 static bool 571 acpi_suspend(device_t dv, const pmf_qual_t *qual) 572 { 573 574 acpi_suspended = 1; 575 576 return true; 577 } 578 579 static bool 580 acpi_resume(device_t dv, const pmf_qual_t *qual) 581 { 582 583 acpi_suspended = 0; 584 585 return true; 586 } 587 588 /* 589 * Namespace scan. 590 */ 591 static void 592 acpi_build_tree(struct acpi_softc *sc) 593 { 594 struct acpi_walkcontext awc; 595 596 /* 597 * Get the root scope handles. 598 */ 599 KASSERT(__arraycount(acpi_scopes) == 4); 600 601 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 602 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 603 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 604 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 605 606 /* 607 * Make the root node. 608 */ 609 awc.aw_sc = sc; 610 awc.aw_parent = NULL; 611 612 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 613 614 KASSERT(sc->sc_root == NULL); 615 KASSERT(awc.aw_parent != NULL); 616 617 sc->sc_root = awc.aw_parent; 618 619 /* 620 * Build the internal namespace. 621 */ 622 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 623 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 624 625 /* 626 * Scan the internal namespace. 627 */ 628 (void)acpi_pcidev_scan(sc->sc_root); 629 (void)acpi_rescan(sc->sc_dev, NULL, NULL); 630 631 /* 632 * Update GPE information. 633 * 634 * Note that this must be called after 635 * all GPE handlers have been installed. 636 */ 637 (void)AcpiUpdateAllGpes(); 638 639 /* 640 * Defer rest of the configuration. 641 */ 642 (void)config_defer(sc->sc_dev, acpi_rescan_capabilities); 643 } 644 645 static ACPI_STATUS 646 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 647 void *context, void **status) 648 { 649 struct acpi_walkcontext *awc = context; 650 struct acpi_softc *sc = awc->aw_sc; 651 struct acpi_devnode *ad; 652 ACPI_DEVICE_INFO *devinfo; 653 ACPI_OBJECT_TYPE type; 654 ACPI_STATUS rv; 655 656 rv = AcpiGetObjectInfo(handle, &devinfo); 657 658 if (ACPI_FAILURE(rv)) 659 return AE_OK; /* Do not terminate the walk. */ 660 661 type = devinfo->Type; 662 663 switch (type) { 664 665 case ACPI_TYPE_DEVICE: 666 acpi_activate_device(handle, &devinfo); 667 case ACPI_TYPE_PROCESSOR: 668 case ACPI_TYPE_THERMAL: 669 case ACPI_TYPE_POWER: 670 671 ad = kmem_zalloc(sizeof(*ad), KM_NOSLEEP); 672 673 if (ad == NULL) 674 return AE_NO_MEMORY; 675 676 ad->ad_device = NULL; 677 ad->ad_notify = NULL; 678 ad->ad_pciinfo = NULL; 679 ad->ad_wakedev = NULL; 680 681 ad->ad_type = type; 682 ad->ad_handle = handle; 683 ad->ad_devinfo = devinfo; 684 685 ad->ad_root = sc->sc_dev; 686 ad->ad_parent = awc->aw_parent; 687 688 acpi_match_node_init(ad); 689 acpi_make_name(ad, devinfo->Name); 690 691 /* 692 * Identify wake GPEs from the _PRW. Note that 693 * AcpiUpdateAllGpes() must be called afterwards. 694 */ 695 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) 696 acpi_wakedev_init(ad); 697 698 SIMPLEQ_INIT(&ad->ad_child_head); 699 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 700 701 if (ad->ad_parent != NULL) { 702 703 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 704 ad, ad_child_list); 705 } 706 707 awc->aw_parent = ad; 708 } 709 710 return AE_OK; 711 } 712 713 static ACPI_STATUS 714 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 715 void *context, void **status) 716 { 717 struct acpi_walkcontext *awc = context; 718 719 KASSERT(awc != NULL); 720 KASSERT(awc->aw_parent != NULL); 721 722 if (handle == awc->aw_parent->ad_handle) 723 awc->aw_parent = awc->aw_parent->ad_parent; 724 725 return AE_OK; 726 } 727 728 static void 729 acpi_make_name(struct acpi_devnode *ad, uint32_t name) 730 { 731 ACPI_NAME_UNION *anu; 732 int clear, i; 733 734 anu = (ACPI_NAME_UNION *)&name; 735 ad->ad_name[4] = '\0'; 736 737 for (i = 3, clear = 0; i >= 0; i--) { 738 739 if (clear == 0 && anu->Ascii[i] == '_') 740 ad->ad_name[i] = '\0'; 741 else { 742 ad->ad_name[i] = anu->Ascii[i]; 743 clear = 1; 744 } 745 } 746 747 if (ad->ad_name[0] == '\0') 748 ad->ad_name[0] = '_'; 749 } 750 751 /* 752 * Device attachment. 753 */ 754 static int 755 acpi_rescan(device_t self, const char *ifattr, const int *locators) 756 { 757 struct acpi_softc *sc = device_private(self); 758 struct acpi_attach_args aa; 759 760 /* 761 * Try to attach hpet(4) first via a specific table. 762 */ 763 aa.aa_memt = sc->sc_memt; 764 765 if (ifattr_match(ifattr, "acpihpetbus") && sc->sc_hpet == NULL) 766 sc->sc_hpet = config_found_ia(sc->sc_dev, 767 "acpihpetbus", &aa, NULL); 768 769 /* 770 * A two-pass scan for acpinodebus. 771 */ 772 if (ifattr_match(ifattr, "acpinodebus")) { 773 acpi_rescan_early(sc); 774 acpi_rescan_nodes(sc); 775 } 776 777 /* 778 * Attach APM emulation and acpiwdrt(4). 779 */ 780 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 781 sc->sc_apmbus = config_found_ia(sc->sc_dev, 782 "acpiapmbus", NULL, NULL); 783 784 if (ifattr_match(ifattr, "acpiwdrtbus") && sc->sc_wdrt == NULL) 785 sc->sc_wdrt = config_found_ia(sc->sc_dev, 786 "acpiwdrtbus", NULL, NULL); 787 788 return 0; 789 } 790 791 static void 792 acpi_rescan_early(struct acpi_softc *sc) 793 { 794 struct acpi_attach_args aa; 795 struct acpi_devnode *ad; 796 797 /* 798 * First scan for devices such as acpiec(4) that 799 * should be always attached before anything else. 800 * We want these devices to attach regardless of 801 * the device status and other restrictions. 802 */ 803 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 804 805 if (ad->ad_device != NULL) 806 continue; 807 808 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 809 continue; 810 811 if (acpi_match_hid(ad->ad_devinfo, acpi_early_ids) == 0) 812 continue; 813 814 aa.aa_node = ad; 815 aa.aa_iot = sc->sc_iot; 816 aa.aa_memt = sc->sc_memt; 817 aa.aa_pc = sc->sc_pc; 818 aa.aa_pciflags = sc->sc_pciflags; 819 aa.aa_ic = sc->sc_ic; 820 821 ad->ad_device = config_found_ia(sc->sc_dev, 822 "acpinodebus", &aa, acpi_print); 823 } 824 } 825 826 static void 827 acpi_rescan_nodes(struct acpi_softc *sc) 828 { 829 const char * const hpet_ids[] = { "PNP0103", NULL }; 830 struct acpi_attach_args aa; 831 struct acpi_devnode *ad; 832 ACPI_DEVICE_INFO *di; 833 834 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 835 836 if (ad->ad_device != NULL) 837 continue; 838 839 /* 840 * There is a bug in ACPICA: it defines the type 841 * of the scopes incorrectly for its own reasons. 842 */ 843 if (acpi_is_scope(ad) != false) 844 continue; 845 846 di = ad->ad_devinfo; 847 848 /* 849 * We only attach devices which are present, enabled, and 850 * functioning properly. However, if a device is enabled, 851 * it is decoding resources and we should claim these, 852 * if possible. This requires changes to bus_space(9). 853 * Note: there is a possible race condition, because _STA 854 * may have changed since di->CurrentStatus was set. 855 */ 856 if (di->Type == ACPI_TYPE_DEVICE) { 857 858 if ((di->Valid & ACPI_VALID_STA) != 0 && 859 (di->CurrentStatus & ACPI_STA_OK) != ACPI_STA_OK) 860 continue; 861 } 862 863 if (di->Type == ACPI_TYPE_POWER) 864 continue; 865 866 if (di->Type == ACPI_TYPE_PROCESSOR) 867 continue; 868 869 if (acpi_match_hid(di, acpi_early_ids) != 0) 870 continue; 871 872 if (acpi_match_hid(di, acpi_ignored_ids) != 0) 873 continue; 874 875 if (acpi_match_hid(di, hpet_ids) != 0 && sc->sc_hpet != NULL) 876 continue; 877 878 aa.aa_node = ad; 879 aa.aa_iot = sc->sc_iot; 880 aa.aa_memt = sc->sc_memt; 881 aa.aa_pc = sc->sc_pc; 882 aa.aa_pciflags = sc->sc_pciflags; 883 aa.aa_ic = sc->sc_ic; 884 885 ad->ad_device = config_found_ia(sc->sc_dev, 886 "acpinodebus", &aa, acpi_print); 887 } 888 } 889 890 static void 891 acpi_rescan_capabilities(device_t self) 892 { 893 struct acpi_softc *sc = device_private(self); 894 struct acpi_devnode *ad; 895 ACPI_HANDLE tmp; 896 ACPI_STATUS rv; 897 898 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 899 900 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 901 continue; 902 903 /* 904 * Scan power resource capabilities. 905 * 906 * If any power states are supported, 907 * at least _PR0 and _PR3 must be present. 908 */ 909 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 910 911 if (ACPI_SUCCESS(rv)) { 912 ad->ad_flags |= ACPI_DEVICE_POWER; 913 acpi_power_add(ad); 914 } 915 916 /* 917 * Scan wake-up capabilities. 918 */ 919 if (ad->ad_wakedev != NULL) { 920 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 921 acpi_wakedev_add(ad); 922 } 923 924 /* 925 * Scan docking stations. 926 */ 927 rv = AcpiGetHandle(ad->ad_handle, "_DCK", &tmp); 928 929 if (ACPI_SUCCESS(rv)) 930 ad->ad_flags |= ACPI_DEVICE_DOCK; 931 932 /* 933 * Scan devices that are ejectable. 934 */ 935 rv = AcpiGetHandle(ad->ad_handle, "_EJ0", &tmp); 936 937 if (ACPI_SUCCESS(rv)) 938 ad->ad_flags |= ACPI_DEVICE_EJECT; 939 } 940 } 941 942 static int 943 acpi_print(void *aux, const char *pnp) 944 { 945 struct acpi_attach_args *aa = aux; 946 struct acpi_devnode *ad; 947 const char *hid, *uid; 948 ACPI_DEVICE_INFO *di; 949 950 ad = aa->aa_node; 951 di = ad->ad_devinfo; 952 953 hid = di->HardwareId.String; 954 uid = di->UniqueId.String; 955 956 if (pnp != NULL) { 957 958 if (di->Type != ACPI_TYPE_DEVICE) { 959 960 aprint_normal("%s (ACPI Object Type '%s') at %s", 961 ad->ad_name, AcpiUtGetTypeName(ad->ad_type), pnp); 962 963 return UNCONF; 964 } 965 966 if ((di->Valid & ACPI_VALID_HID) == 0 || hid == NULL) 967 return 0; 968 969 aprint_normal("%s (%s) ", ad->ad_name, hid); 970 acpi_print_dev(hid); 971 aprint_normal("at %s", pnp); 972 973 return UNCONF; 974 } 975 976 aprint_normal(" (%s", ad->ad_name); 977 978 if ((di->Valid & ACPI_VALID_HID) != 0 && hid != NULL) { 979 980 aprint_normal(", %s", hid); 981 982 if ((di->Valid & ACPI_VALID_UID) != 0 && uid != NULL) { 983 984 if (uid[0] == '\0') 985 uid = "<null>"; 986 987 aprint_normal("-%s", uid); 988 } 989 } 990 991 aprint_normal(")"); 992 993 return UNCONF; 994 } 995 996 /* 997 * Notify. 998 */ 999 static void 1000 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1001 { 1002 struct acpi_softc *sc = acpi_softc; 1003 struct acpi_devnode *ad; 1004 1005 KASSERT(sc != NULL); 1006 KASSERT(aux == NULL); 1007 KASSERT(acpi_active != 0); 1008 1009 if (acpi_suspended != 0) 1010 return; 1011 1012 /* 1013 * System: 0x00 - 0x7F. 1014 * Device: 0x80 - 0xFF. 1015 */ 1016 switch (event) { 1017 1018 case ACPI_NOTIFY_BUS_CHECK: 1019 case ACPI_NOTIFY_DEVICE_CHECK: 1020 case ACPI_NOTIFY_DEVICE_WAKE: 1021 case ACPI_NOTIFY_EJECT_REQUEST: 1022 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1023 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1024 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1025 case ACPI_NOTIFY_POWER_FAULT: 1026 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1027 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1028 case ACPI_NOTIFY_RESERVED: 1029 case ACPI_NOTIFY_LOCALITY_UPDATE: 1030 break; 1031 } 1032 1033 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1034 "%s (%p)\n", event, acpi_name(handle), handle)); 1035 1036 /* 1037 * We deliver notifications only to drivers 1038 * that have been succesfully attached and 1039 * that have registered a handler with us. 1040 * The opaque pointer is always the device_t. 1041 */ 1042 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1043 1044 if (ad->ad_device == NULL) 1045 continue; 1046 1047 if (ad->ad_notify == NULL) 1048 continue; 1049 1050 if (ad->ad_handle != handle) 1051 continue; 1052 1053 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1054 1055 return; 1056 } 1057 1058 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1059 "for %s (%p)\n", event, acpi_name(handle), handle); 1060 } 1061 1062 bool 1063 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1064 { 1065 struct acpi_softc *sc = acpi_softc; 1066 1067 KASSERT(sc != NULL); 1068 KASSERT(acpi_active != 0); 1069 1070 if (acpi_suspended != 0) 1071 goto fail; 1072 1073 if (ad == NULL || notify == NULL) 1074 goto fail; 1075 1076 ad->ad_notify = notify; 1077 1078 return true; 1079 1080 fail: 1081 aprint_error_dev(sc->sc_dev, "failed to register notify " 1082 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1083 1084 return false; 1085 } 1086 1087 void 1088 acpi_deregister_notify(struct acpi_devnode *ad) 1089 { 1090 1091 ad->ad_notify = NULL; 1092 } 1093 1094 /* 1095 * Fixed buttons. 1096 */ 1097 static void 1098 acpi_register_fixed_button(struct acpi_softc *sc, int event) 1099 { 1100 struct sysmon_pswitch *smpsw; 1101 ACPI_STATUS rv; 1102 int type; 1103 1104 switch (event) { 1105 1106 case ACPI_EVENT_POWER_BUTTON: 1107 1108 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1109 return; 1110 1111 type = PSWITCH_TYPE_POWER; 1112 smpsw = &sc->sc_smpsw_power; 1113 break; 1114 1115 case ACPI_EVENT_SLEEP_BUTTON: 1116 1117 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1118 return; 1119 1120 type = PSWITCH_TYPE_SLEEP; 1121 smpsw = &sc->sc_smpsw_sleep; 1122 break; 1123 1124 default: 1125 rv = AE_TYPE; 1126 goto fail; 1127 } 1128 1129 smpsw->smpsw_type = type; 1130 smpsw->smpsw_name = device_xname(sc->sc_dev); 1131 1132 if (sysmon_pswitch_register(smpsw) != 0) { 1133 rv = AE_ERROR; 1134 goto fail; 1135 } 1136 1137 rv = AcpiInstallFixedEventHandler(event, 1138 acpi_fixed_button_handler, smpsw); 1139 1140 if (ACPI_FAILURE(rv)) { 1141 sysmon_pswitch_unregister(smpsw); 1142 goto fail; 1143 } 1144 1145 aprint_debug_dev(sc->sc_dev, "fixed %s button present\n", 1146 (type != ACPI_EVENT_SLEEP_BUTTON) ? "power" : "sleep"); 1147 1148 return; 1149 1150 fail: 1151 aprint_error_dev(sc->sc_dev, "failed to register " 1152 "fixed event: %s\n", AcpiFormatException(rv)); 1153 } 1154 1155 static void 1156 acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1157 { 1158 struct sysmon_pswitch *smpsw; 1159 ACPI_STATUS rv; 1160 1161 switch (event) { 1162 1163 case ACPI_EVENT_POWER_BUTTON: 1164 smpsw = &sc->sc_smpsw_power; 1165 1166 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1167 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1168 return; 1169 } 1170 1171 break; 1172 1173 case ACPI_EVENT_SLEEP_BUTTON: 1174 smpsw = &sc->sc_smpsw_sleep; 1175 1176 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1177 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1178 return; 1179 } 1180 1181 break; 1182 1183 default: 1184 rv = AE_TYPE; 1185 goto fail; 1186 } 1187 1188 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1189 1190 if (ACPI_SUCCESS(rv)) { 1191 sysmon_pswitch_unregister(smpsw); 1192 return; 1193 } 1194 1195 fail: 1196 aprint_error_dev(sc->sc_dev, "failed to deregister " 1197 "fixed event: %s\n", AcpiFormatException(rv)); 1198 } 1199 1200 static uint32_t 1201 acpi_fixed_button_handler(void *context) 1202 { 1203 static const int handler = OSL_NOTIFY_HANDLER; 1204 struct sysmon_pswitch *smpsw = context; 1205 1206 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1207 1208 return ACPI_INTERRUPT_HANDLED; 1209 } 1210 1211 static void 1212 acpi_fixed_button_pressed(void *context) 1213 { 1214 struct sysmon_pswitch *smpsw = context; 1215 1216 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1217 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1218 "power" : "sleep")); 1219 1220 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1221 } 1222 1223 /* 1224 * Sleep. 1225 */ 1226 static void 1227 acpi_sleep_init(struct acpi_softc *sc) 1228 { 1229 uint8_t a, b, i; 1230 ACPI_STATUS rv; 1231 1232 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1233 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1234 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1235 1236 /* 1237 * Evaluate supported sleep states. 1238 */ 1239 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1240 1241 rv = AcpiGetSleepTypeData(i, &a, &b); 1242 1243 if (ACPI_SUCCESS(rv)) 1244 sc->sc_sleepstates |= __BIT(i); 1245 } 1246 } 1247 1248 /* 1249 * Must be called with interrupts enabled. 1250 */ 1251 void 1252 acpi_enter_sleep_state(int state) 1253 { 1254 struct acpi_softc *sc = acpi_softc; 1255 ACPI_STATUS rv; 1256 int err; 1257 1258 if (acpi_softc == NULL) 1259 return; 1260 1261 if (state == sc->sc_sleepstate) 1262 return; 1263 1264 if (state < ACPI_STATE_S0 || state > ACPI_STATE_S5) 1265 return; 1266 1267 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1268 1269 switch (state) { 1270 1271 case ACPI_STATE_S0: 1272 sc->sc_sleepstate = ACPI_STATE_S0; 1273 return; 1274 1275 case ACPI_STATE_S1: 1276 case ACPI_STATE_S2: 1277 case ACPI_STATE_S3: 1278 case ACPI_STATE_S4: 1279 1280 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1281 aprint_error_dev(sc->sc_dev, "sleep state " 1282 "S%d is not available\n", state); 1283 return; 1284 } 1285 1286 /* 1287 * Evaluate the _TTS method. This should be done before 1288 * pmf_system_suspend(9) and the evaluation of _PTS. 1289 * We should also re-evaluate this once we return to 1290 * S0 or if we abort the sleep state transition in the 1291 * middle (see ACPI 3.0, section 7.3.6). In reality, 1292 * however, the _TTS method is seldom seen in the field. 1293 */ 1294 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1295 1296 if (ACPI_SUCCESS(rv)) 1297 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1298 1299 if (state != ACPI_STATE_S1 && 1300 pmf_system_suspend(PMF_Q_NONE) != true) { 1301 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1302 break; 1303 } 1304 1305 /* 1306 * This will evaluate the _PTS and _SST methods, 1307 * but unlike the documentation claims, not _GTS, 1308 * which is evaluated in AcpiEnterSleepState(). 1309 * This must be called with interrupts enabled. 1310 */ 1311 rv = AcpiEnterSleepStatePrep(state); 1312 1313 if (ACPI_FAILURE(rv)) { 1314 aprint_error_dev(sc->sc_dev, "failed to prepare " 1315 "S%d: %s\n", state, AcpiFormatException(rv)); 1316 break; 1317 } 1318 1319 /* 1320 * After the _PTS method has been evaluated, we can 1321 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1322 */ 1323 acpi_wakedev_commit(sc, state); 1324 1325 sc->sc_sleepstate = state; 1326 1327 if (state == ACPI_STATE_S1) { 1328 1329 /* 1330 * Before the transition to S1, CPU caches 1331 * must be flushed (see ACPI 4.0, 7.3.4.2). 1332 * 1333 * Note that interrupts must be off before 1334 * calling AcpiEnterSleepState(). Conversely, 1335 * AcpiLeaveSleepState() should always be 1336 * called with interrupts enabled. 1337 */ 1338 acpi_md_OsDisableInterrupt(); 1339 1340 ACPI_FLUSH_CPU_CACHE(); 1341 rv = AcpiEnterSleepState(state); 1342 1343 if (ACPI_FAILURE(rv)) 1344 aprint_error_dev(sc->sc_dev, "failed to " 1345 "enter S1: %s\n", AcpiFormatException(rv)); 1346 1347 acpi_md_OsEnableInterrupt(); 1348 rv = AcpiLeaveSleepState(state); 1349 1350 } else { 1351 1352 err = acpi_md_sleep(state); 1353 1354 if (state == ACPI_STATE_S4) 1355 AcpiEnable(); 1356 1357 (void)pmf_system_bus_resume(PMF_Q_NONE); 1358 (void)AcpiLeaveSleepState(state); 1359 (void)AcpiSetFirmwareWakingVector(0); 1360 (void)pmf_system_resume(PMF_Q_NONE); 1361 } 1362 1363 /* 1364 * No wake GPEs should be enabled at runtime. 1365 */ 1366 acpi_wakedev_commit(sc, ACPI_STATE_S0); 1367 break; 1368 1369 case ACPI_STATE_S5: 1370 1371 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1372 1373 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1374 1375 if (ACPI_FAILURE(rv)) { 1376 aprint_error_dev(sc->sc_dev, "failed to prepare " 1377 "S%d: %s\n", state, AcpiFormatException(rv)); 1378 break; 1379 } 1380 1381 (void)AcpiDisableAllGpes(); 1382 1383 DELAY(1000000); 1384 1385 sc->sc_sleepstate = state; 1386 acpi_md_OsDisableInterrupt(); 1387 1388 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1389 1390 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1391 1392 break; 1393 } 1394 1395 sc->sc_sleepstate = ACPI_STATE_S0; 1396 1397 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1398 } 1399 1400 /* 1401 * Sysctl. 1402 */ 1403 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1404 { 1405 const struct sysctlnode *mnode, *rnode, *snode; 1406 int err; 1407 1408 err = sysctl_createv(clog, 0, NULL, &rnode, 1409 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", 1410 NULL, NULL, 0, NULL, 0, 1411 CTL_HW, CTL_EOL); 1412 1413 if (err != 0) 1414 return; 1415 1416 err = sysctl_createv(clog, 0, &rnode, &rnode, 1417 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1418 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1419 NULL, 0, NULL, 0, 1420 CTL_CREATE, CTL_EOL); 1421 1422 if (err != 0) 1423 return; 1424 1425 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1426 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1427 "root", SYSCTL_DESCR("ACPI root pointer"), 1428 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1429 CTL_CREATE, CTL_EOL); 1430 1431 err = sysctl_createv(clog, 0, &rnode, &snode, 1432 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1433 "sleep", SYSCTL_DESCR("ACPI sleep"), 1434 NULL, 0, NULL, 0, 1435 CTL_CREATE, CTL_EOL); 1436 1437 if (err != 0) 1438 return; 1439 1440 (void)sysctl_createv(NULL, 0, &snode, NULL, 1441 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1442 "state", SYSCTL_DESCR("System sleep state"), 1443 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1444 CTL_CREATE, CTL_EOL); 1445 1446 (void)sysctl_createv(NULL, 0, &snode, NULL, 1447 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1448 "states", SYSCTL_DESCR("Supported sleep states"), 1449 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1450 CTL_CREATE, CTL_EOL); 1451 1452 /* 1453 * For the time being, machdep.sleep_state 1454 * is provided for backwards compatibility. 1455 */ 1456 err = sysctl_createv(NULL, 0, NULL, &mnode, 1457 CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep", 1458 NULL, NULL, 0, NULL, 0, 1459 CTL_MACHDEP, CTL_EOL); 1460 1461 if (err == 0) { 1462 1463 (void)sysctl_createv(NULL, 0, &mnode, NULL, 1464 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1465 "sleep_state", SYSCTL_DESCR("System sleep state"), 1466 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1467 CTL_CREATE, CTL_EOL); 1468 } 1469 1470 err = sysctl_createv(clog, 0, &rnode, &rnode, 1471 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1472 "stat", SYSCTL_DESCR("ACPI statistics"), 1473 NULL, 0, NULL, 0, 1474 CTL_CREATE, CTL_EOL); 1475 1476 if (err != 0) 1477 return; 1478 1479 (void)sysctl_createv(clog, 0, &rnode, NULL, 1480 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1481 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1482 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1483 CTL_CREATE, CTL_EOL); 1484 1485 (void)sysctl_createv(clog, 0, &rnode, NULL, 1486 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1487 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1488 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1489 CTL_CREATE, CTL_EOL); 1490 1491 (void)sysctl_createv(clog, 0, &rnode, NULL, 1492 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1493 "fixed", SYSCTL_DESCR("Number of fixed events"), 1494 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1495 CTL_CREATE, CTL_EOL); 1496 1497 (void)sysctl_createv(clog, 0, &rnode, NULL, 1498 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1499 "method", SYSCTL_DESCR("Number of methods executed"), 1500 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1501 CTL_CREATE, CTL_EOL); 1502 1503 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1504 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1505 } 1506 1507 static int 1508 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1509 { 1510 struct sysctlnode node; 1511 uint64_t t; 1512 int err, i; 1513 1514 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1515 t += AcpiFixedEventCount[i]; 1516 1517 node = *rnode; 1518 node.sysctl_data = &t; 1519 1520 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1521 1522 if (err || newp == NULL) 1523 return err; 1524 1525 return 0; 1526 } 1527 1528 static int 1529 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1530 { 1531 struct acpi_softc *sc = acpi_softc; 1532 struct sysctlnode node; 1533 int err, t; 1534 1535 if (acpi_softc == NULL) 1536 return ENOSYS; 1537 1538 node = *rnode; 1539 t = sc->sc_sleepstate; 1540 node.sysctl_data = &t; 1541 1542 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1543 1544 if (err || newp == NULL) 1545 return err; 1546 1547 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1548 return EINVAL; 1549 1550 acpi_enter_sleep_state(t); 1551 1552 return 0; 1553 } 1554 1555 static int 1556 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1557 { 1558 struct acpi_softc *sc = acpi_softc; 1559 struct sysctlnode node; 1560 char t[3 * 6 + 1]; 1561 int err; 1562 1563 if (acpi_softc == NULL) 1564 return ENOSYS; 1565 1566 (void)memset(t, '\0', sizeof(t)); 1567 1568 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1569 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1570 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1571 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1572 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1573 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1574 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1575 1576 node = *rnode; 1577 node.sysctl_data = &t; 1578 1579 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1580 1581 if (err || newp == NULL) 1582 return err; 1583 1584 return 0; 1585 } 1586 1587 /* 1588 * Tables. 1589 */ 1590 ACPI_PHYSICAL_ADDRESS 1591 acpi_OsGetRootPointer(void) 1592 { 1593 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1594 1595 /* 1596 * We let MD code handle this since there are multiple ways to do it: 1597 * 1598 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1599 * 1600 * IA-64: Use the EFI. 1601 */ 1602 PhysicalAddress = acpi_md_OsGetRootPointer(); 1603 1604 if (acpi_root_pointer == 0) 1605 acpi_root_pointer = PhysicalAddress; 1606 1607 return PhysicalAddress; 1608 } 1609 1610 static ACPI_TABLE_HEADER * 1611 acpi_map_rsdt(void) 1612 { 1613 ACPI_PHYSICAL_ADDRESS paddr; 1614 ACPI_TABLE_RSDP *rsdp; 1615 1616 paddr = AcpiOsGetRootPointer(); 1617 1618 if (paddr == 0) 1619 return NULL; 1620 1621 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1622 1623 if (rsdp == NULL) 1624 return NULL; 1625 1626 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1627 paddr = rsdp->XsdtPhysicalAddress; 1628 else 1629 paddr = rsdp->RsdtPhysicalAddress; 1630 1631 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1632 1633 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1634 } 1635 1636 /* 1637 * XXX: Refactor to be a generic function that unmaps tables. 1638 */ 1639 static void 1640 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1641 { 1642 1643 if (rsdt == NULL) 1644 return; 1645 1646 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1647 } 1648 1649 /* 1650 * XXX: Refactor to be a generic function that maps tables. 1651 */ 1652 ACPI_STATUS 1653 acpi_madt_map(void) 1654 { 1655 ACPI_STATUS rv; 1656 1657 if (madt_header != NULL) 1658 return AE_ALREADY_EXISTS; 1659 1660 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); 1661 1662 if (ACPI_FAILURE(rv)) 1663 return rv; 1664 1665 return AE_OK; 1666 } 1667 1668 void 1669 acpi_madt_unmap(void) 1670 { 1671 madt_header = NULL; 1672 } 1673 1674 /* 1675 * XXX: Refactor to be a generic function that walks tables. 1676 */ 1677 void 1678 acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) 1679 { 1680 ACPI_SUBTABLE_HEADER *hdrp; 1681 char *madtend, *where; 1682 1683 madtend = (char *)madt_header + madt_header->Length; 1684 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); 1685 1686 while (where < madtend) { 1687 1688 hdrp = (ACPI_SUBTABLE_HEADER *)where; 1689 1690 if (ACPI_FAILURE(func(hdrp, aux))) 1691 break; 1692 1693 where += hdrp->Length; 1694 } 1695 } 1696 1697 /* 1698 * Miscellaneous. 1699 */ 1700 static bool 1701 acpi_is_scope(struct acpi_devnode *ad) 1702 { 1703 int i; 1704 1705 /* 1706 * Return true if the node is a root scope. 1707 */ 1708 if (ad->ad_parent == NULL) 1709 return false; 1710 1711 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1712 return false; 1713 1714 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1715 1716 if (acpi_scopes[i] == NULL) 1717 continue; 1718 1719 if (ad->ad_handle == acpi_scopes[i]) 1720 return true; 1721 } 1722 1723 return false; 1724 } 1725 1726 /* 1727 * ACPIVERBOSE. 1728 */ 1729 void 1730 acpi_load_verbose(void) 1731 { 1732 1733 if (acpi_verbose_loaded == 0) 1734 module_autoload("acpiverbose", MODULE_CLASS_MISC); 1735 } 1736 1737 void 1738 acpi_print_verbose_stub(struct acpi_softc *sc) 1739 { 1740 1741 acpi_load_verbose(); 1742 1743 if (acpi_verbose_loaded != 0) 1744 acpi_print_verbose(sc); 1745 } 1746 1747 void 1748 acpi_print_dev_stub(const char *pnpstr) 1749 { 1750 1751 acpi_load_verbose(); 1752 1753 if (acpi_verbose_loaded != 0) 1754 acpi_print_dev(pnpstr); 1755 } 1756 1757 MALLOC_DECLARE(M_ACPI); /* XXX: ACPI_ACTIVATE_DEV should use kmem(9). */ 1758 1759 /* 1760 * ACPI_ACTIVATE_DEV. 1761 */ 1762 static void 1763 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 1764 { 1765 1766 #ifndef ACPI_ACTIVATE_DEV 1767 return; 1768 } 1769 #else 1770 static const int valid = ACPI_VALID_STA | ACPI_VALID_HID; 1771 ACPI_DEVICE_INFO *newdi; 1772 ACPI_STATUS rv; 1773 uint32_t old; 1774 1775 /* 1776 * If the device is valid and present, 1777 * but not enabled, try to activate it. 1778 */ 1779 if (((*di)->Valid & valid) != valid) 1780 return; 1781 1782 old = (*di)->CurrentStatus; 1783 1784 if ((old & (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED)) != 1785 ACPI_STA_DEVICE_PRESENT) 1786 return; 1787 1788 rv = acpi_allocate_resources(handle); 1789 1790 if (ACPI_FAILURE(rv)) 1791 goto fail; 1792 1793 rv = AcpiGetObjectInfo(handle, &newdi); 1794 1795 if (ACPI_FAILURE(rv)) 1796 goto fail; 1797 1798 ACPI_FREE(*di); 1799 *di = newdi; 1800 1801 aprint_verbose_dev(acpi_softc->sc_dev, 1802 "%s activated, STA 0x%08X -> STA 0x%08X\n", 1803 (*di)->HardwareId.String, old, (*di)->CurrentStatus); 1804 1805 return; 1806 1807 fail: 1808 aprint_error_dev(acpi_softc->sc_dev, "failed to " 1809 "activate %s\n", (*di)->HardwareId.String); 1810 } 1811 1812 /* 1813 * XXX: This very incomplete. 1814 */ 1815 ACPI_STATUS 1816 acpi_allocate_resources(ACPI_HANDLE handle) 1817 { 1818 ACPI_BUFFER bufp, bufc, bufn; 1819 ACPI_RESOURCE *resp, *resc, *resn; 1820 ACPI_RESOURCE_IRQ *irq; 1821 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 1822 ACPI_STATUS rv; 1823 uint delta; 1824 1825 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 1826 if (ACPI_FAILURE(rv)) 1827 goto out; 1828 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 1829 if (ACPI_FAILURE(rv)) { 1830 goto out1; 1831 } 1832 1833 bufn.Length = 1000; 1834 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 1835 resp = bufp.Pointer; 1836 resc = bufc.Pointer; 1837 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 1838 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1839 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 1840 resp = ACPI_NEXT_RESOURCE(resp); 1841 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 1842 break; 1843 /* Found identical Id */ 1844 resn->Type = resc->Type; 1845 switch (resc->Type) { 1846 case ACPI_RESOURCE_TYPE_IRQ: 1847 memcpy(&resn->Data, &resp->Data, 1848 sizeof(ACPI_RESOURCE_IRQ)); 1849 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 1850 irq->Interrupts[0] = 1851 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 1852 Interrupts[irq->InterruptCount-1]; 1853 irq->InterruptCount = 1; 1854 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 1855 break; 1856 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 1857 memcpy(&resn->Data, &resp->Data, 1858 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 1859 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 1860 #if 0 1861 /* 1862 * XXX: Not duplicating the interrupt logic above 1863 * because its not clear what it accomplishes. 1864 */ 1865 xirq->Interrupts[0] = 1866 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 1867 Interrupts[irq->NumberOfInterrupts-1]; 1868 xirq->NumberOfInterrupts = 1; 1869 #endif 1870 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 1871 break; 1872 case ACPI_RESOURCE_TYPE_IO: 1873 memcpy(&resn->Data, &resp->Data, 1874 sizeof(ACPI_RESOURCE_IO)); 1875 resn->Length = resp->Length; 1876 break; 1877 default: 1878 aprint_error_dev(acpi_softc->sc_dev, 1879 "%s: invalid type %u\n", __func__, resc->Type); 1880 rv = AE_BAD_DATA; 1881 goto out2; 1882 } 1883 resc = ACPI_NEXT_RESOURCE(resc); 1884 resn = ACPI_NEXT_RESOURCE(resn); 1885 resp = ACPI_NEXT_RESOURCE(resp); 1886 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 1887 if (delta >= 1888 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 1889 bufn.Length *= 2; 1890 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 1891 M_ACPI, M_WAITOK); 1892 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 1893 delta); 1894 } 1895 } 1896 1897 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1898 aprint_error_dev(acpi_softc->sc_dev, 1899 "%s: resc not exhausted\n", __func__); 1900 rv = AE_BAD_DATA; 1901 goto out3; 1902 } 1903 1904 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 1905 rv = AcpiSetCurrentResources(handle, &bufn); 1906 1907 if (ACPI_FAILURE(rv)) 1908 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 1909 "resources: %s\n", __func__, AcpiFormatException(rv)); 1910 1911 out3: 1912 free(bufn.Pointer, M_ACPI); 1913 out2: 1914 ACPI_FREE(bufc.Pointer); 1915 out1: 1916 ACPI_FREE(bufp.Pointer); 1917 out: 1918 return rv; 1919 } 1920 1921 #endif /* ACPI_ACTIVATE_DEV */ 1922
Indexes created Mon Sep 22 13:09:51 GMT 2025