1 /* $NetBSD: acpi.c,v 1.239 2011/02/20 16:24:54 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 1.239 2011/02/20 16:24:54 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 uint32_t acpi_cpus = 0; 138 int acpi_active = 0; 139 int acpi_suspended = 0; 140 int acpi_force_load = 0; 141 int acpi_verbose_loaded = 0; 142 143 struct acpi_softc *acpi_softc = NULL; 144 static uint64_t acpi_root_pointer; 145 extern kmutex_t acpi_interrupt_list_mtx; 146 extern struct cfdriver acpi_cd; 147 static ACPI_HANDLE acpi_scopes[4]; 148 ACPI_TABLE_HEADER *madt_header; 149 150 /* 151 * This structure provides a context for the ACPI 152 * namespace walk performed in acpi_build_tree(). 153 */ 154 struct acpi_walkcontext { 155 struct acpi_softc *aw_sc; 156 struct acpi_devnode *aw_parent; 157 }; 158 159 /* 160 * Ignored HIDs. 161 */ 162 static const char * const acpi_ignored_ids[] = { 163 #if defined(i386) || defined(x86_64) 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 EC handler initialization if ECDT table is available. 445 */ 446 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 * Install global notify handlers. 455 */ 456 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 457 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 458 459 if (ACPI_FAILURE(rv)) 460 goto fail; 461 462 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 463 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 464 465 if (ACPI_FAILURE(rv)) 466 goto fail; 467 468 acpi_active = 1; 469 470 /* Show SCI interrupt. */ 471 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 472 AcpiGbl_FADT.SciInterrupt); 473 474 /* 475 * Install fixed-event handlers. 476 */ 477 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 478 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 479 480 acpitimer_init(sc); 481 482 /* 483 * Scan the namespace and build our device tree. 484 */ 485 acpi_build_tree(sc); 486 acpi_sleep_init(sc); 487 488 #ifdef ACPI_DEBUG 489 acpi_debug_init(); 490 #endif 491 492 /* 493 * Print debug information. 494 */ 495 acpi_print_verbose(sc); 496 497 return; 498 499 fail: 500 aprint_error("%s: failed to initialize ACPI: %s\n", 501 __func__, AcpiFormatException(rv)); 502 } 503 504 /* 505 * XXX: This is incomplete. 506 */ 507 static int 508 acpi_detach(device_t self, int flags) 509 { 510 struct acpi_softc *sc = device_private(self); 511 ACPI_STATUS rv; 512 int rc; 513 514 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 515 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 516 517 if (ACPI_FAILURE(rv)) 518 return EBUSY; 519 520 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 521 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 522 523 if (ACPI_FAILURE(rv)) 524 return EBUSY; 525 526 if ((rc = config_detach_children(self, flags)) != 0) 527 return rc; 528 529 if ((rc = acpitimer_detach()) != 0) 530 return rc; 531 532 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 533 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 534 535 pmf_device_deregister(self); 536 537 acpi_softc = NULL; 538 539 return 0; 540 } 541 542 static void 543 acpi_childdet(device_t self, device_t child) 544 { 545 struct acpi_softc *sc = device_private(self); 546 struct acpi_devnode *ad; 547 548 if (sc->sc_apmbus == child) 549 sc->sc_apmbus = NULL; 550 551 if (sc->sc_wdrt == child) 552 sc->sc_wdrt = NULL; 553 554 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 555 556 if (ad->ad_device == child) 557 ad->ad_device = NULL; 558 } 559 } 560 561 static bool 562 acpi_suspend(device_t dv, const pmf_qual_t *qual) 563 { 564 565 acpi_suspended = 1; 566 567 return true; 568 } 569 570 static bool 571 acpi_resume(device_t dv, const pmf_qual_t *qual) 572 { 573 574 acpi_suspended = 0; 575 576 return true; 577 } 578 579 /* 580 * Namespace scan. 581 */ 582 static void 583 acpi_build_tree(struct acpi_softc *sc) 584 { 585 struct acpi_walkcontext awc; 586 587 /* 588 * Get the root scope handles. 589 */ 590 KASSERT(__arraycount(acpi_scopes) == 4); 591 592 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 593 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 594 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 595 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 596 597 /* 598 * Make the root node. 599 */ 600 awc.aw_sc = sc; 601 awc.aw_parent = NULL; 602 603 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 604 605 KASSERT(sc->sc_root == NULL); 606 KASSERT(awc.aw_parent != NULL); 607 608 sc->sc_root = awc.aw_parent; 609 610 /* 611 * Build the internal namespace. 612 */ 613 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 614 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 615 616 /* 617 * Scan the internal namespace. 618 */ 619 (void)acpi_pcidev_scan(sc->sc_root); 620 (void)acpi_rescan(sc->sc_dev, NULL, NULL); 621 622 /* 623 * Update GPE information. 624 * 625 * Note that this must be called after 626 * all GPE handlers have been installed. 627 */ 628 (void)AcpiUpdateAllGpes(); 629 630 /* 631 * Defer rest of the configuration. 632 */ 633 (void)config_defer(sc->sc_dev, acpi_rescan_capabilities); 634 } 635 636 static ACPI_STATUS 637 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 638 void *context, void **status) 639 { 640 struct acpi_walkcontext *awc = context; 641 struct acpi_softc *sc = awc->aw_sc; 642 struct acpi_devnode *ad; 643 ACPI_DEVICE_INFO *devinfo; 644 ACPI_OBJECT_TYPE type; 645 ACPI_STATUS rv; 646 647 rv = AcpiGetObjectInfo(handle, &devinfo); 648 649 if (ACPI_FAILURE(rv)) 650 return AE_OK; /* Do not terminate the walk. */ 651 652 type = devinfo->Type; 653 654 switch (type) { 655 656 case ACPI_TYPE_DEVICE: 657 acpi_activate_device(handle, &devinfo); 658 case ACPI_TYPE_PROCESSOR: 659 case ACPI_TYPE_THERMAL: 660 case ACPI_TYPE_POWER: 661 662 ad = kmem_zalloc(sizeof(*ad), KM_NOSLEEP); 663 664 if (ad == NULL) 665 return AE_NO_MEMORY; 666 667 ad->ad_device = NULL; 668 ad->ad_notify = NULL; 669 ad->ad_pciinfo = NULL; 670 ad->ad_wakedev = NULL; 671 672 ad->ad_type = type; 673 ad->ad_handle = handle; 674 ad->ad_devinfo = devinfo; 675 676 ad->ad_root = sc->sc_dev; 677 ad->ad_parent = awc->aw_parent; 678 679 acpi_set_node(ad); 680 acpi_make_name(ad, devinfo->Name); 681 682 /* 683 * Identify wake GPEs from the _PRW. Note that 684 * AcpiUpdateAllGpes() must be called afterwards. 685 */ 686 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) 687 acpi_wakedev_init(ad); 688 689 SIMPLEQ_INIT(&ad->ad_child_head); 690 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 691 692 if (ad->ad_parent != NULL) { 693 694 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 695 ad, ad_child_list); 696 } 697 698 awc->aw_parent = ad; 699 } 700 701 return AE_OK; 702 } 703 704 static ACPI_STATUS 705 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 706 void *context, void **status) 707 { 708 struct acpi_walkcontext *awc = context; 709 710 KASSERT(awc != NULL); 711 KASSERT(awc->aw_parent != NULL); 712 713 if (handle == awc->aw_parent->ad_handle) 714 awc->aw_parent = awc->aw_parent->ad_parent; 715 716 return AE_OK; 717 } 718 719 static void 720 acpi_make_name(struct acpi_devnode *ad, uint32_t name) 721 { 722 ACPI_NAME_UNION *anu; 723 int clear, i; 724 725 anu = (ACPI_NAME_UNION *)&name; 726 ad->ad_name[4] = '\0'; 727 728 for (i = 3, clear = 0; i >= 0; i--) { 729 730 if (clear == 0 && anu->Ascii[i] == '_') 731 ad->ad_name[i] = '\0'; 732 else { 733 ad->ad_name[i] = anu->Ascii[i]; 734 clear = 1; 735 } 736 } 737 738 if (ad->ad_name[0] == '\0') 739 ad->ad_name[0] = '_'; 740 } 741 742 /* 743 * Device attachment. 744 */ 745 static int 746 acpi_rescan(device_t self, const char *ifattr, const int *locators) 747 { 748 struct acpi_softc *sc = device_private(self); 749 750 /* 751 * A two-pass scan for acpinodebus. 752 */ 753 if (ifattr_match(ifattr, "acpinodebus")) { 754 acpi_rescan_early(sc); 755 acpi_rescan_nodes(sc); 756 } 757 758 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 759 sc->sc_apmbus = config_found_ia(sc->sc_dev, 760 "acpiapmbus", NULL, NULL); 761 762 if (ifattr_match(ifattr, "acpiwdrtbus") && sc->sc_wdrt == NULL) 763 sc->sc_wdrt = config_found_ia(sc->sc_dev, 764 "acpiwdrtbus", NULL, NULL); 765 766 return 0; 767 } 768 769 static void 770 acpi_rescan_early(struct acpi_softc *sc) 771 { 772 struct acpi_attach_args aa; 773 struct acpi_devnode *ad; 774 775 /* 776 * First scan for devices such as acpiec(4) that 777 * should be always attached before anything else. 778 * We want these devices to attach regardless of 779 * the device status and other restrictions. 780 */ 781 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 782 783 if (ad->ad_device != NULL) 784 continue; 785 786 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 787 continue; 788 789 if (acpi_match_hid(ad->ad_devinfo, acpi_early_ids) == 0) 790 continue; 791 792 aa.aa_node = ad; 793 aa.aa_iot = sc->sc_iot; 794 aa.aa_memt = sc->sc_memt; 795 aa.aa_pc = sc->sc_pc; 796 aa.aa_pciflags = sc->sc_pciflags; 797 aa.aa_ic = sc->sc_ic; 798 799 ad->ad_device = config_found_ia(sc->sc_dev, 800 "acpinodebus", &aa, acpi_print); 801 } 802 } 803 804 static void 805 acpi_rescan_nodes(struct acpi_softc *sc) 806 { 807 const uint32_t ncpus = acpi_md_ncpus(); 808 struct acpi_attach_args aa; 809 struct acpi_devnode *ad; 810 ACPI_DEVICE_INFO *di; 811 812 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 813 814 if (ad->ad_device != NULL) 815 continue; 816 817 /* 818 * There is a bug in ACPICA: it defines the type 819 * of the scopes incorrectly for its own reasons. 820 */ 821 if (acpi_is_scope(ad) != false) 822 continue; 823 824 di = ad->ad_devinfo; 825 826 /* 827 * We only attach devices which are present, enabled, and 828 * functioning properly. However, if a device is enabled, 829 * it is decoding resources and we should claim these, 830 * if possible. This requires changes to bus_space(9). 831 * Note: there is a possible race condition, because _STA 832 * may have changed since di->CurrentStatus was set. 833 */ 834 if (di->Type == ACPI_TYPE_DEVICE) { 835 836 if ((di->Valid & ACPI_VALID_STA) != 0 && 837 (di->CurrentStatus & ACPI_STA_OK) != ACPI_STA_OK) 838 continue; 839 } 840 841 if (di->Type == ACPI_TYPE_POWER) 842 continue; 843 844 if (di->Type == ACPI_TYPE_PROCESSOR && acpi_cpus >= ncpus) 845 continue; 846 847 if (acpi_match_hid(di, acpi_early_ids) != 0) 848 continue; 849 850 if (acpi_match_hid(di, acpi_ignored_ids) != 0) 851 continue; 852 853 aa.aa_node = ad; 854 aa.aa_iot = sc->sc_iot; 855 aa.aa_memt = sc->sc_memt; 856 aa.aa_pc = sc->sc_pc; 857 aa.aa_pciflags = sc->sc_pciflags; 858 aa.aa_ic = sc->sc_ic; 859 860 ad->ad_device = config_found_ia(sc->sc_dev, 861 "acpinodebus", &aa, acpi_print); 862 } 863 } 864 865 static void 866 acpi_rescan_capabilities(device_t self) 867 { 868 struct acpi_softc *sc = device_private(self); 869 struct acpi_devnode *ad; 870 ACPI_HANDLE tmp; 871 ACPI_STATUS rv; 872 873 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 874 875 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 876 continue; 877 878 /* 879 * Scan power resource capabilities. 880 * 881 * If any power states are supported, 882 * at least _PR0 and _PR3 must be present. 883 */ 884 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 885 886 if (ACPI_SUCCESS(rv)) { 887 ad->ad_flags |= ACPI_DEVICE_POWER; 888 acpi_power_add(ad); 889 } 890 891 /* 892 * Scan wake-up capabilities. 893 */ 894 if (ad->ad_wakedev != NULL) { 895 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 896 acpi_wakedev_add(ad); 897 } 898 899 /* 900 * Scan docking stations. 901 */ 902 rv = AcpiGetHandle(ad->ad_handle, "_DCK", &tmp); 903 904 if (ACPI_SUCCESS(rv)) 905 ad->ad_flags |= ACPI_DEVICE_DOCK; 906 907 /* 908 * Scan devices that are ejectable. 909 */ 910 rv = AcpiGetHandle(ad->ad_handle, "_EJ0", &tmp); 911 912 if (ACPI_SUCCESS(rv)) 913 ad->ad_flags |= ACPI_DEVICE_EJECT; 914 } 915 } 916 917 static int 918 acpi_print(void *aux, const char *pnp) 919 { 920 struct acpi_attach_args *aa = aux; 921 struct acpi_devnode *ad; 922 const char *hid, *uid; 923 ACPI_DEVICE_INFO *di; 924 925 ad = aa->aa_node; 926 di = ad->ad_devinfo; 927 928 hid = di->HardwareId.String; 929 uid = di->UniqueId.String; 930 931 if (pnp != NULL) { 932 933 if (di->Type != ACPI_TYPE_DEVICE) { 934 935 aprint_normal("%s (ACPI Object Type '%s') at %s", 936 ad->ad_name, AcpiUtGetTypeName(ad->ad_type), pnp); 937 938 return UNCONF; 939 } 940 941 if ((di->Valid & ACPI_VALID_HID) == 0 || hid == NULL) 942 return 0; 943 944 aprint_normal("%s (%s) ", ad->ad_name, hid); 945 acpi_print_dev(hid); 946 aprint_normal("at %s", pnp); 947 948 return UNCONF; 949 } 950 951 aprint_normal(" (%s", ad->ad_name); 952 953 if ((di->Valid & ACPI_VALID_HID) != 0 && hid != NULL) { 954 955 aprint_normal(", %s", hid); 956 957 if ((di->Valid & ACPI_VALID_UID) != 0 && uid != NULL) { 958 959 if (uid[0] == '\0') 960 uid = "<null>"; 961 962 aprint_normal("-%s", uid); 963 } 964 } 965 966 aprint_normal(")"); 967 968 return UNCONF; 969 } 970 971 /* 972 * Notify. 973 */ 974 static void 975 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 976 { 977 struct acpi_softc *sc = acpi_softc; 978 struct acpi_devnode *ad; 979 980 KASSERT(sc != NULL); 981 KASSERT(aux == NULL); 982 KASSERT(acpi_active != 0); 983 984 if (acpi_suspended != 0) 985 return; 986 987 /* 988 * System: 0x00 - 0x7F. 989 * Device: 0x80 - 0xFF. 990 */ 991 switch (event) { 992 993 case ACPI_NOTIFY_BUS_CHECK: 994 case ACPI_NOTIFY_DEVICE_CHECK: 995 case ACPI_NOTIFY_DEVICE_WAKE: 996 case ACPI_NOTIFY_EJECT_REQUEST: 997 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 998 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 999 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1000 case ACPI_NOTIFY_POWER_FAULT: 1001 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1002 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1003 case ACPI_NOTIFY_RESERVED: 1004 case ACPI_NOTIFY_LOCALITY_UPDATE: 1005 break; 1006 } 1007 1008 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1009 "%s (%p)\n", event, acpi_name(handle), handle)); 1010 1011 /* 1012 * We deliver notifications only to drivers 1013 * that have been succesfully attached and 1014 * that have registered a handler with us. 1015 * The opaque pointer is always the device_t. 1016 */ 1017 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1018 1019 if (ad->ad_device == NULL) 1020 continue; 1021 1022 if (ad->ad_notify == NULL) 1023 continue; 1024 1025 if (ad->ad_handle != handle) 1026 continue; 1027 1028 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1029 1030 return; 1031 } 1032 1033 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1034 "for %s (%p)\n", event, acpi_name(handle), handle); 1035 } 1036 1037 bool 1038 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1039 { 1040 struct acpi_softc *sc = acpi_softc; 1041 1042 KASSERT(sc != NULL); 1043 KASSERT(acpi_active != 0); 1044 1045 if (acpi_suspended != 0) 1046 goto fail; 1047 1048 if (ad == NULL || notify == NULL) 1049 goto fail; 1050 1051 ad->ad_notify = notify; 1052 1053 return true; 1054 1055 fail: 1056 aprint_error_dev(sc->sc_dev, "failed to register notify " 1057 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1058 1059 return false; 1060 } 1061 1062 void 1063 acpi_deregister_notify(struct acpi_devnode *ad) 1064 { 1065 1066 ad->ad_notify = NULL; 1067 } 1068 1069 /* 1070 * Fixed buttons. 1071 */ 1072 static void 1073 acpi_register_fixed_button(struct acpi_softc *sc, int event) 1074 { 1075 struct sysmon_pswitch *smpsw; 1076 ACPI_STATUS rv; 1077 int type; 1078 1079 switch (event) { 1080 1081 case ACPI_EVENT_POWER_BUTTON: 1082 1083 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1084 return; 1085 1086 type = PSWITCH_TYPE_POWER; 1087 smpsw = &sc->sc_smpsw_power; 1088 break; 1089 1090 case ACPI_EVENT_SLEEP_BUTTON: 1091 1092 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1093 return; 1094 1095 type = PSWITCH_TYPE_SLEEP; 1096 smpsw = &sc->sc_smpsw_sleep; 1097 break; 1098 1099 default: 1100 rv = AE_TYPE; 1101 goto fail; 1102 } 1103 1104 smpsw->smpsw_type = type; 1105 smpsw->smpsw_name = device_xname(sc->sc_dev); 1106 1107 if (sysmon_pswitch_register(smpsw) != 0) { 1108 rv = AE_ERROR; 1109 goto fail; 1110 } 1111 1112 rv = AcpiInstallFixedEventHandler(event, 1113 acpi_fixed_button_handler, smpsw); 1114 1115 if (ACPI_FAILURE(rv)) { 1116 sysmon_pswitch_unregister(smpsw); 1117 goto fail; 1118 } 1119 1120 aprint_debug_dev(sc->sc_dev, "fixed %s button present\n", 1121 (type != ACPI_EVENT_SLEEP_BUTTON) ? "power" : "sleep"); 1122 1123 return; 1124 1125 fail: 1126 aprint_error_dev(sc->sc_dev, "failed to register " 1127 "fixed event: %s\n", AcpiFormatException(rv)); 1128 } 1129 1130 static void 1131 acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1132 { 1133 struct sysmon_pswitch *smpsw; 1134 ACPI_STATUS rv; 1135 1136 switch (event) { 1137 1138 case ACPI_EVENT_POWER_BUTTON: 1139 smpsw = &sc->sc_smpsw_power; 1140 1141 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1142 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1143 return; 1144 } 1145 1146 break; 1147 1148 case ACPI_EVENT_SLEEP_BUTTON: 1149 smpsw = &sc->sc_smpsw_sleep; 1150 1151 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1152 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1153 return; 1154 } 1155 1156 break; 1157 1158 default: 1159 rv = AE_TYPE; 1160 goto fail; 1161 } 1162 1163 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1164 1165 if (ACPI_SUCCESS(rv)) { 1166 sysmon_pswitch_unregister(smpsw); 1167 return; 1168 } 1169 1170 fail: 1171 aprint_error_dev(sc->sc_dev, "failed to deregister " 1172 "fixed event: %s\n", AcpiFormatException(rv)); 1173 } 1174 1175 static uint32_t 1176 acpi_fixed_button_handler(void *context) 1177 { 1178 static const int handler = OSL_NOTIFY_HANDLER; 1179 struct sysmon_pswitch *smpsw = context; 1180 1181 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1182 1183 return ACPI_INTERRUPT_HANDLED; 1184 } 1185 1186 static void 1187 acpi_fixed_button_pressed(void *context) 1188 { 1189 struct sysmon_pswitch *smpsw = context; 1190 1191 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1192 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1193 "power" : "sleep")); 1194 1195 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1196 } 1197 1198 /* 1199 * Sleep. 1200 */ 1201 static void 1202 acpi_sleep_init(struct acpi_softc *sc) 1203 { 1204 uint8_t a, b, i; 1205 ACPI_STATUS rv; 1206 1207 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1208 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1209 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1210 1211 /* 1212 * Evaluate supported sleep states. 1213 */ 1214 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1215 1216 rv = AcpiGetSleepTypeData(i, &a, &b); 1217 1218 if (ACPI_SUCCESS(rv)) 1219 sc->sc_sleepstates |= __BIT(i); 1220 } 1221 } 1222 1223 /* 1224 * Must be called with interrupts enabled. 1225 */ 1226 void 1227 acpi_enter_sleep_state(int state) 1228 { 1229 struct acpi_softc *sc = acpi_softc; 1230 ACPI_STATUS rv; 1231 int err; 1232 1233 if (acpi_softc == NULL) 1234 return; 1235 1236 if (state == sc->sc_sleepstate) 1237 return; 1238 1239 if (state < ACPI_STATE_S0 || state > ACPI_STATE_S5) 1240 return; 1241 1242 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1243 1244 switch (state) { 1245 1246 case ACPI_STATE_S0: 1247 sc->sc_sleepstate = ACPI_STATE_S0; 1248 return; 1249 1250 case ACPI_STATE_S1: 1251 case ACPI_STATE_S2: 1252 case ACPI_STATE_S3: 1253 case ACPI_STATE_S4: 1254 1255 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1256 aprint_error_dev(sc->sc_dev, "sleep state " 1257 "S%d is not available\n", state); 1258 return; 1259 } 1260 1261 /* 1262 * Evaluate the _TTS method. This should be done before 1263 * pmf_system_suspend(9) and the evaluation of _PTS. 1264 * We should also re-evaluate this once we return to 1265 * S0 or if we abort the sleep state transition in the 1266 * middle (see ACPI 3.0, section 7.3.6). In reality, 1267 * however, the _TTS method is seldom seen in the field. 1268 */ 1269 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1270 1271 if (ACPI_SUCCESS(rv)) 1272 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1273 1274 if (state != ACPI_STATE_S1 && 1275 pmf_system_suspend(PMF_Q_NONE) != true) { 1276 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1277 break; 1278 } 1279 1280 /* 1281 * This will evaluate the _PTS and _SST methods, 1282 * but unlike the documentation claims, not _GTS, 1283 * which is evaluated in AcpiEnterSleepState(). 1284 * This must be called with interrupts enabled. 1285 */ 1286 rv = AcpiEnterSleepStatePrep(state); 1287 1288 if (ACPI_FAILURE(rv)) { 1289 aprint_error_dev(sc->sc_dev, "failed to prepare " 1290 "S%d: %s\n", state, AcpiFormatException(rv)); 1291 break; 1292 } 1293 1294 /* 1295 * After the _PTS method has been evaluated, we can 1296 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1297 */ 1298 acpi_wakedev_commit(sc, state); 1299 1300 sc->sc_sleepstate = state; 1301 1302 if (state == ACPI_STATE_S1) { 1303 1304 /* Just enter the state. */ 1305 acpi_md_OsDisableInterrupt(); 1306 rv = AcpiEnterSleepState(state); 1307 1308 if (ACPI_FAILURE(rv)) 1309 aprint_error_dev(sc->sc_dev, "failed to " 1310 "enter S1: %s\n", AcpiFormatException(rv)); 1311 1312 (void)AcpiLeaveSleepState(state); 1313 1314 } else { 1315 1316 err = acpi_md_sleep(state); 1317 1318 if (state == ACPI_STATE_S4) 1319 AcpiEnable(); 1320 1321 (void)pmf_system_bus_resume(PMF_Q_NONE); 1322 (void)AcpiLeaveSleepState(state); 1323 (void)AcpiSetFirmwareWakingVector(0); 1324 (void)pmf_system_resume(PMF_Q_NONE); 1325 } 1326 1327 acpi_wakedev_commit(sc, ACPI_STATE_S0); 1328 break; 1329 1330 case ACPI_STATE_S5: 1331 1332 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1333 1334 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1335 1336 if (ACPI_FAILURE(rv)) { 1337 aprint_error_dev(sc->sc_dev, "failed to prepare " 1338 "S%d: %s\n", state, AcpiFormatException(rv)); 1339 break; 1340 } 1341 1342 (void)AcpiDisableAllGpes(); 1343 1344 DELAY(1000000); 1345 1346 sc->sc_sleepstate = state; 1347 acpi_md_OsDisableInterrupt(); 1348 1349 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1350 1351 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1352 1353 break; 1354 } 1355 1356 sc->sc_sleepstate = ACPI_STATE_S0; 1357 1358 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1359 } 1360 1361 /* 1362 * Sysctl. 1363 */ 1364 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1365 { 1366 const struct sysctlnode *mnode, *rnode, *snode; 1367 int err; 1368 1369 err = sysctl_createv(clog, 0, NULL, &rnode, 1370 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", 1371 NULL, NULL, 0, NULL, 0, 1372 CTL_HW, CTL_EOL); 1373 1374 if (err != 0) 1375 return; 1376 1377 err = sysctl_createv(clog, 0, &rnode, &rnode, 1378 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1379 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1380 NULL, 0, NULL, 0, 1381 CTL_CREATE, CTL_EOL); 1382 1383 if (err != 0) 1384 return; 1385 1386 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1387 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1388 "root", SYSCTL_DESCR("ACPI root pointer"), 1389 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1390 CTL_CREATE, CTL_EOL); 1391 1392 err = sysctl_createv(clog, 0, &rnode, &snode, 1393 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1394 "sleep", SYSCTL_DESCR("ACPI sleep"), 1395 NULL, 0, NULL, 0, 1396 CTL_CREATE, CTL_EOL); 1397 1398 if (err != 0) 1399 return; 1400 1401 (void)sysctl_createv(NULL, 0, &snode, NULL, 1402 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1403 "state", SYSCTL_DESCR("System sleep state"), 1404 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1405 CTL_CREATE, CTL_EOL); 1406 1407 (void)sysctl_createv(NULL, 0, &snode, NULL, 1408 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1409 "states", SYSCTL_DESCR("Supported sleep states"), 1410 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1411 CTL_CREATE, CTL_EOL); 1412 1413 /* 1414 * For the time being, machdep.sleep_state 1415 * is provided for backwards compatibility. 1416 */ 1417 err = sysctl_createv(NULL, 0, NULL, &mnode, 1418 CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep", 1419 NULL, NULL, 0, NULL, 0, 1420 CTL_MACHDEP, CTL_EOL); 1421 1422 if (err == 0) { 1423 1424 (void)sysctl_createv(NULL, 0, &mnode, NULL, 1425 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1426 "sleep_state", SYSCTL_DESCR("System sleep state"), 1427 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1428 CTL_CREATE, CTL_EOL); 1429 } 1430 1431 err = sysctl_createv(clog, 0, &rnode, &rnode, 1432 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1433 "stat", SYSCTL_DESCR("ACPI statistics"), 1434 NULL, 0, NULL, 0, 1435 CTL_CREATE, CTL_EOL); 1436 1437 if (err != 0) 1438 return; 1439 1440 (void)sysctl_createv(clog, 0, &rnode, NULL, 1441 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1442 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1443 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1444 CTL_CREATE, CTL_EOL); 1445 1446 (void)sysctl_createv(clog, 0, &rnode, NULL, 1447 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1448 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1449 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1450 CTL_CREATE, CTL_EOL); 1451 1452 (void)sysctl_createv(clog, 0, &rnode, NULL, 1453 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1454 "fixed", SYSCTL_DESCR("Number of fixed events"), 1455 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1456 CTL_CREATE, CTL_EOL); 1457 1458 (void)sysctl_createv(clog, 0, &rnode, NULL, 1459 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1460 "method", SYSCTL_DESCR("Number of methods executed"), 1461 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1462 CTL_CREATE, CTL_EOL); 1463 1464 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1465 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1466 } 1467 1468 static int 1469 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1470 { 1471 struct sysctlnode node; 1472 uint64_t t; 1473 int err, i; 1474 1475 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1476 t += AcpiFixedEventCount[i]; 1477 1478 node = *rnode; 1479 node.sysctl_data = &t; 1480 1481 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1482 1483 if (err || newp == NULL) 1484 return err; 1485 1486 return 0; 1487 } 1488 1489 static int 1490 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1491 { 1492 struct acpi_softc *sc = acpi_softc; 1493 struct sysctlnode node; 1494 int err, t; 1495 1496 if (acpi_softc == NULL) 1497 return ENOSYS; 1498 1499 node = *rnode; 1500 t = sc->sc_sleepstate; 1501 node.sysctl_data = &t; 1502 1503 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1504 1505 if (err || newp == NULL) 1506 return err; 1507 1508 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1509 return EINVAL; 1510 1511 acpi_enter_sleep_state(t); 1512 1513 return 0; 1514 } 1515 1516 static int 1517 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1518 { 1519 struct acpi_softc *sc = acpi_softc; 1520 struct sysctlnode node; 1521 char t[3 * 6 + 1]; 1522 int err; 1523 1524 if (acpi_softc == NULL) 1525 return ENOSYS; 1526 1527 (void)memset(t, '\0', sizeof(t)); 1528 1529 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1530 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1531 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1532 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1533 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1534 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1535 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1536 1537 node = *rnode; 1538 node.sysctl_data = &t; 1539 1540 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1541 1542 if (err || newp == NULL) 1543 return err; 1544 1545 return 0; 1546 } 1547 1548 /* 1549 * Tables. 1550 */ 1551 ACPI_PHYSICAL_ADDRESS 1552 acpi_OsGetRootPointer(void) 1553 { 1554 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1555 1556 /* 1557 * We let MD code handle this since there are multiple ways to do it: 1558 * 1559 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1560 * 1561 * IA-64: Use the EFI. 1562 */ 1563 PhysicalAddress = acpi_md_OsGetRootPointer(); 1564 1565 if (acpi_root_pointer == 0) 1566 acpi_root_pointer = PhysicalAddress; 1567 1568 return PhysicalAddress; 1569 } 1570 1571 static ACPI_TABLE_HEADER * 1572 acpi_map_rsdt(void) 1573 { 1574 ACPI_PHYSICAL_ADDRESS paddr; 1575 ACPI_TABLE_RSDP *rsdp; 1576 1577 paddr = AcpiOsGetRootPointer(); 1578 1579 if (paddr == 0) 1580 return NULL; 1581 1582 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1583 1584 if (rsdp == NULL) 1585 return NULL; 1586 1587 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1588 paddr = rsdp->XsdtPhysicalAddress; 1589 else 1590 paddr = rsdp->RsdtPhysicalAddress; 1591 1592 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1593 1594 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1595 } 1596 1597 /* 1598 * XXX: Refactor to be a generic function that unmaps tables. 1599 */ 1600 static void 1601 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1602 { 1603 1604 if (rsdt == NULL) 1605 return; 1606 1607 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1608 } 1609 1610 /* 1611 * XXX: Refactor to be a generic function that maps tables. 1612 */ 1613 ACPI_STATUS 1614 acpi_madt_map(void) 1615 { 1616 ACPI_STATUS rv; 1617 1618 if (madt_header != NULL) 1619 return AE_ALREADY_EXISTS; 1620 1621 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); 1622 1623 if (ACPI_FAILURE(rv)) 1624 return rv; 1625 1626 return AE_OK; 1627 } 1628 1629 void 1630 acpi_madt_unmap(void) 1631 { 1632 madt_header = NULL; 1633 } 1634 1635 /* 1636 * XXX: Refactor to be a generic function that walks tables. 1637 */ 1638 void 1639 acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) 1640 { 1641 ACPI_SUBTABLE_HEADER *hdrp; 1642 char *madtend, *where; 1643 1644 madtend = (char *)madt_header + madt_header->Length; 1645 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); 1646 1647 while (where < madtend) { 1648 1649 hdrp = (ACPI_SUBTABLE_HEADER *)where; 1650 1651 if (ACPI_FAILURE(func(hdrp, aux))) 1652 break; 1653 1654 where += hdrp->Length; 1655 } 1656 } 1657 1658 /* 1659 * Miscellaneous. 1660 */ 1661 static bool 1662 acpi_is_scope(struct acpi_devnode *ad) 1663 { 1664 int i; 1665 1666 /* 1667 * Return true if the node is a root scope. 1668 */ 1669 if (ad->ad_parent == NULL) 1670 return false; 1671 1672 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1673 return false; 1674 1675 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1676 1677 if (acpi_scopes[i] == NULL) 1678 continue; 1679 1680 if (ad->ad_handle == acpi_scopes[i]) 1681 return true; 1682 } 1683 1684 return false; 1685 } 1686 1687 /* 1688 * ACPIVERBOSE. 1689 */ 1690 void 1691 acpi_load_verbose(void) 1692 { 1693 1694 if (acpi_verbose_loaded == 0) 1695 module_autoload("acpiverbose", MODULE_CLASS_MISC); 1696 } 1697 1698 void 1699 acpi_print_verbose_stub(struct acpi_softc *sc) 1700 { 1701 1702 acpi_load_verbose(); 1703 1704 if (acpi_verbose_loaded != 0) 1705 acpi_print_verbose(sc); 1706 } 1707 1708 void 1709 acpi_print_dev_stub(const char *pnpstr) 1710 { 1711 1712 acpi_load_verbose(); 1713 1714 if (acpi_verbose_loaded != 0) 1715 acpi_print_dev(pnpstr); 1716 } 1717 1718 MALLOC_DECLARE(M_ACPI); /* XXX: ACPI_ACTIVATE_DEV should use kmem(9). */ 1719 1720 /* 1721 * ACPI_ACTIVATE_DEV. 1722 */ 1723 static void 1724 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 1725 { 1726 1727 #ifndef ACPI_ACTIVATE_DEV 1728 return; 1729 } 1730 #else 1731 static const int valid = ACPI_VALID_STA | ACPI_VALID_HID; 1732 ACPI_DEVICE_INFO *newdi; 1733 ACPI_STATUS rv; 1734 uint32_t old; 1735 1736 /* 1737 * If the device is valid and present, 1738 * but not enabled, try to activate it. 1739 */ 1740 if (((*di)->Valid & valid) != valid) 1741 return; 1742 1743 old = (*di)->CurrentStatus; 1744 1745 if ((old & (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED)) != 1746 ACPI_STA_DEVICE_PRESENT) 1747 return; 1748 1749 rv = acpi_allocate_resources(handle); 1750 1751 if (ACPI_FAILURE(rv)) 1752 goto fail; 1753 1754 rv = AcpiGetObjectInfo(handle, &newdi); 1755 1756 if (ACPI_FAILURE(rv)) 1757 goto fail; 1758 1759 ACPI_FREE(*di); 1760 *di = newdi; 1761 1762 aprint_verbose_dev(acpi_softc->sc_dev, 1763 "%s activated, STA 0x%08X -> STA 0x%08X\n", 1764 (*di)->HardwareId.String, old, (*di)->CurrentStatus); 1765 1766 return; 1767 1768 fail: 1769 aprint_error_dev(acpi_softc->sc_dev, "failed to " 1770 "activate %s\n", (*di)->HardwareId.String); 1771 } 1772 1773 /* 1774 * XXX: This very incomplete. 1775 */ 1776 ACPI_STATUS 1777 acpi_allocate_resources(ACPI_HANDLE handle) 1778 { 1779 ACPI_BUFFER bufp, bufc, bufn; 1780 ACPI_RESOURCE *resp, *resc, *resn; 1781 ACPI_RESOURCE_IRQ *irq; 1782 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 1783 ACPI_STATUS rv; 1784 uint delta; 1785 1786 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 1787 if (ACPI_FAILURE(rv)) 1788 goto out; 1789 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 1790 if (ACPI_FAILURE(rv)) { 1791 goto out1; 1792 } 1793 1794 bufn.Length = 1000; 1795 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 1796 resp = bufp.Pointer; 1797 resc = bufc.Pointer; 1798 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 1799 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1800 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 1801 resp = ACPI_NEXT_RESOURCE(resp); 1802 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 1803 break; 1804 /* Found identical Id */ 1805 resn->Type = resc->Type; 1806 switch (resc->Type) { 1807 case ACPI_RESOURCE_TYPE_IRQ: 1808 memcpy(&resn->Data, &resp->Data, 1809 sizeof(ACPI_RESOURCE_IRQ)); 1810 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 1811 irq->Interrupts[0] = 1812 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 1813 Interrupts[irq->InterruptCount-1]; 1814 irq->InterruptCount = 1; 1815 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 1816 break; 1817 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 1818 memcpy(&resn->Data, &resp->Data, 1819 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 1820 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 1821 #if 0 1822 /* 1823 * XXX: Not duplicating the interrupt logic above 1824 * because its not clear what it accomplishes. 1825 */ 1826 xirq->Interrupts[0] = 1827 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 1828 Interrupts[irq->NumberOfInterrupts-1]; 1829 xirq->NumberOfInterrupts = 1; 1830 #endif 1831 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 1832 break; 1833 case ACPI_RESOURCE_TYPE_IO: 1834 memcpy(&resn->Data, &resp->Data, 1835 sizeof(ACPI_RESOURCE_IO)); 1836 resn->Length = resp->Length; 1837 break; 1838 default: 1839 aprint_error_dev(acpi_softc->sc_dev, 1840 "%s: invalid type %u\n", __func__, resc->Type); 1841 rv = AE_BAD_DATA; 1842 goto out2; 1843 } 1844 resc = ACPI_NEXT_RESOURCE(resc); 1845 resn = ACPI_NEXT_RESOURCE(resn); 1846 resp = ACPI_NEXT_RESOURCE(resp); 1847 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 1848 if (delta >= 1849 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 1850 bufn.Length *= 2; 1851 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 1852 M_ACPI, M_WAITOK); 1853 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 1854 delta); 1855 } 1856 } 1857 1858 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1859 aprint_error_dev(acpi_softc->sc_dev, 1860 "%s: resc not exhausted\n", __func__); 1861 rv = AE_BAD_DATA; 1862 goto out3; 1863 } 1864 1865 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 1866 rv = AcpiSetCurrentResources(handle, &bufn); 1867 1868 if (ACPI_FAILURE(rv)) 1869 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 1870 "resources: %s\n", __func__, AcpiFormatException(rv)); 1871 1872 out3: 1873 free(bufn.Pointer, M_ACPI); 1874 out2: 1875 ACPI_FREE(bufc.Pointer); 1876 out1: 1877 ACPI_FREE(bufp.Pointer); 1878 out: 1879 return rv; 1880 } 1881 1882 #endif /* ACPI_ACTIVATE_DEV */ 1883