acpi.c revision 1.261
1 /* $NetBSD: acpi.c,v 1.261 2015/10/02 05:22:52 msaitoh 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 1.261 2015/10/02 05:22:52 msaitoh 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_mcfg.h> 122 #include <dev/acpi/acpi_osd.h> 123 #include <dev/acpi/acpi_pci.h> 124 #include <dev/acpi/acpi_power.h> 125 #include <dev/acpi/acpi_timer.h> 126 #include <dev/acpi/acpi_wakedev.h> 127 128 #include <machine/acpi_machdep.h> 129 130 #define _COMPONENT ACPI_BUS_COMPONENT 131 ACPI_MODULE_NAME ("acpi") 132 133 /* 134 * The acpi_active variable is set when the ACPI subsystem is active. 135 * Machine-dependent code may wish to skip other steps (such as attaching 136 * subsystems that ACPI supercedes) when ACPI is active. 137 */ 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 "ACPI0007", /* ACPI CPUs do not attach to acpi(4) */ 165 "PNP0000", /* AT interrupt controller is handled internally */ 166 "PNP0200", /* AT DMA controller is handled internally */ 167 "PNP0A??", /* PCI Busses are handled internally */ 168 "PNP0B00", /* AT RTC is handled internally */ 169 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 170 #endif 171 #if defined(x86_64) 172 "PNP0C04", /* FPU is handled internally */ 173 #endif 174 NULL 175 }; 176 177 /* 178 * Devices that should be attached early. 179 */ 180 static const char * const acpi_early_ids[] = { 181 "PNP0C09", /* acpiec(4) */ 182 NULL 183 }; 184 185 static int acpi_match(device_t, cfdata_t, void *); 186 static int acpi_submatch(device_t, cfdata_t, const int *, void *); 187 static void acpi_attach(device_t, device_t, void *); 188 static int acpi_detach(device_t, int); 189 static void acpi_childdet(device_t, device_t); 190 static bool acpi_suspend(device_t, const pmf_qual_t *); 191 static bool acpi_resume(device_t, const pmf_qual_t *); 192 193 static void acpi_build_tree(struct acpi_softc *); 194 static void acpi_config_tree(struct acpi_softc *); 195 static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, 196 void *, void **); 197 static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t, 198 void *, void **); 199 static void acpi_make_name(struct acpi_devnode *, uint32_t); 200 201 static int acpi_rescan(device_t, const char *, const int *); 202 static void acpi_rescan_early(struct acpi_softc *); 203 static void acpi_rescan_nodes(struct acpi_softc *); 204 static void acpi_rescan_capabilities(device_t); 205 static int acpi_print(void *aux, const char *); 206 207 static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); 208 209 static void acpi_register_fixed_button(struct acpi_softc *, int); 210 static void acpi_deregister_fixed_button(struct acpi_softc *, int); 211 static uint32_t acpi_fixed_button_handler(void *); 212 static void acpi_fixed_button_pressed(void *); 213 214 static void acpi_sleep_init(struct acpi_softc *); 215 216 static int sysctl_hw_acpi_fixedstats(SYSCTLFN_PROTO); 217 static int sysctl_hw_acpi_sleepstate(SYSCTLFN_PROTO); 218 static int sysctl_hw_acpi_sleepstates(SYSCTLFN_PROTO); 219 220 static bool acpi_is_scope(struct acpi_devnode *); 221 static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 222 static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 223 224 void acpi_print_verbose_stub(struct acpi_softc *); 225 void acpi_print_dev_stub(const char *); 226 227 static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **); 228 ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE); 229 230 void (*acpi_print_verbose)(struct acpi_softc *) = acpi_print_verbose_stub; 231 void (*acpi_print_dev)(const char *) = acpi_print_dev_stub; 232 233 CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 234 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 235 236 /* 237 * Probe for ACPI support. 238 * 239 * This is called by the machine-dependent ACPI front-end. 240 * Note: this is not an autoconfiguration interface function. 241 */ 242 int 243 acpi_probe(void) 244 { 245 ACPI_TABLE_HEADER *rsdt; 246 ACPI_STATUS rv; 247 int quirks; 248 249 if (acpi_softc != NULL) 250 panic("%s: already probed", __func__); 251 252 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 253 254 /* 255 * Start up ACPICA. 256 */ 257 AcpiGbl_EnableInterpreterSlack = true; 258 259 rv = AcpiInitializeSubsystem(); 260 261 if (ACPI_FAILURE(rv)) { 262 aprint_error("%s: failed to initialize subsystem\n", __func__); 263 return 0; 264 } 265 266 /* 267 * Allocate space for RSDT/XSDT and DSDT, 268 * but allow resizing if more tables exist. 269 */ 270 rv = AcpiInitializeTables(NULL, 2, true); 271 272 if (ACPI_FAILURE(rv)) { 273 aprint_error("%s: failed to initialize tables\n", __func__); 274 goto fail; 275 } 276 277 rv = AcpiLoadTables(); 278 279 if (ACPI_FAILURE(rv)) { 280 aprint_error("%s: failed to load tables\n", __func__); 281 goto fail; 282 } 283 284 rsdt = acpi_map_rsdt(); 285 286 if (rsdt == NULL) { 287 aprint_error("%s: failed to map RSDT\n", __func__); 288 goto fail; 289 } 290 291 quirks = acpi_find_quirks(); 292 293 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_BROKEN) != 0) { 294 295 aprint_normal("ACPI: BIOS is listed as broken:\n"); 296 aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 297 "AslId <%4.4s,%08x>\n", rsdt->OemId, rsdt->OemTableId, 298 rsdt->OemRevision, rsdt->AslCompilerId, 299 rsdt->AslCompilerRevision); 300 aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n"); 301 302 acpi_unmap_rsdt(rsdt); 303 goto fail; 304 } 305 306 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_OLDBIOS) != 0) { 307 308 aprint_normal("ACPI: BIOS is too old (%s). " 309 "Set acpi_force_load to use.\n", 310 pmf_get_platform("bios-date")); 311 312 acpi_unmap_rsdt(rsdt); 313 goto fail; 314 } 315 316 acpi_unmap_rsdt(rsdt); 317 318 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 319 320 if (ACPI_FAILURE(rv)) { 321 aprint_error("%s: failed to enable subsystem\n", __func__); 322 goto fail; 323 } 324 325 return 1; 326 327 fail: 328 (void)AcpiTerminate(); 329 330 return 0; 331 } 332 333 void 334 acpi_disable(void) 335 { 336 337 if (acpi_softc == NULL) 338 return; 339 340 KASSERT(acpi_active != 0); 341 342 if (AcpiGbl_FADT.SmiCommand != 0) 343 AcpiDisable(); 344 } 345 346 int 347 acpi_check(device_t parent, const char *ifattr) 348 { 349 return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); 350 } 351 352 int 353 acpi_reset(void) 354 { 355 struct acpi_softc *sc = acpi_softc; 356 ACPI_GENERIC_ADDRESS *ResetReg; 357 ACPI_PCI_ID PciId; 358 ACPI_STATUS status; 359 360 if (sc == NULL) 361 return ENXIO; 362 363 ResetReg = &AcpiGbl_FADT.ResetRegister; 364 365 /* Check if the reset register is supported */ 366 if (!(AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) || 367 !ResetReg->Address) { 368 return ENOENT; 369 } 370 371 switch (ResetReg->SpaceId) { 372 case ACPI_ADR_SPACE_PCI_CONFIG: 373 PciId.Segment = PciId.Bus = 0; 374 PciId.Device = ACPI_GAS_PCI_DEV(ResetReg->Address); 375 PciId.Function = ACPI_GAS_PCI_FUNC(ResetReg->Address); 376 status = AcpiOsWritePciConfiguration(&PciId, 377 ACPI_GAS_PCI_REGOFF(ResetReg->Address), 378 AcpiGbl_FADT.ResetValue, ResetReg->BitWidth); 379 break; 380 case ACPI_ADR_SPACE_SYSTEM_IO: 381 case ACPI_ADR_SPACE_SYSTEM_MEMORY: 382 status = AcpiReset(); 383 break; 384 default: 385 status = AE_TYPE; 386 break; 387 } 388 389 return ACPI_FAILURE(status) ? EIO : 0; 390 } 391 392 /* 393 * Autoconfiguration. 394 */ 395 static int 396 acpi_match(device_t parent, cfdata_t match, void *aux) 397 { 398 /* 399 * XXX: Nada; MD code has called acpi_probe(). 400 */ 401 return 1; 402 } 403 404 static int 405 acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 406 { 407 struct cfattach *ca; 408 409 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 410 411 return (ca == &acpi_ca); 412 } 413 414 static void 415 acpi_attach(device_t parent, device_t self, void *aux) 416 { 417 struct acpi_softc *sc = device_private(self); 418 struct acpibus_attach_args *aa = aux; 419 ACPI_TABLE_HEADER *rsdt; 420 ACPI_STATUS rv; 421 422 aprint_naive("\n"); 423 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 424 425 if (acpi_softc != NULL) 426 panic("%s: already attached", __func__); 427 428 rsdt = acpi_map_rsdt(); 429 430 if (rsdt == NULL) 431 aprint_error_dev(self, "X/RSDT: Not found\n"); 432 else { 433 aprint_verbose_dev(self, 434 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 435 rsdt->OemId, rsdt->OemTableId, 436 rsdt->OemRevision, 437 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 438 } 439 440 acpi_unmap_rsdt(rsdt); 441 442 sc->sc_dev = self; 443 sc->sc_root = NULL; 444 445 sc->sc_sleepstate = ACPI_STATE_S0; 446 sc->sc_quirks = acpi_find_quirks(); 447 448 sysmon_power_settype("acpi"); 449 450 sc->sc_iot = aa->aa_iot; 451 sc->sc_memt = aa->aa_memt; 452 sc->sc_pc = aa->aa_pc; 453 sc->sc_pciflags = aa->aa_pciflags; 454 sc->sc_ic = aa->aa_ic; 455 456 SIMPLEQ_INIT(&sc->ad_head); 457 458 acpi_softc = sc; 459 460 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) 461 aprint_error_dev(self, "couldn't establish power handler\n"); 462 463 /* 464 * Bring ACPICA on-line. 465 */ 466 467 rv = AcpiEnableSubsystem(ACPI_FULL_INITIALIZATION); 468 469 if (ACPI_FAILURE(rv)) 470 goto fail; 471 472 /* 473 * Early initialization of acpiec(4) via ECDT. 474 */ 475 (void)config_found_ia(self, "acpiecdtbus", aa, NULL); 476 477 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 478 479 if (ACPI_FAILURE(rv)) 480 goto fail; 481 482 /* 483 * Scan the namespace and build our device tree. 484 */ 485 acpi_build_tree(sc); 486 487 /* 488 * Probe MCFG table 489 */ 490 acpimcfg_probe(sc); 491 492 acpi_md_callback(sc); 493 494 /* 495 * Early initialization of the _PDC control method 496 * that may load additional SSDT tables dynamically. 497 */ 498 (void)acpi_md_pdc(); 499 500 /* 501 * Install global notify handlers. 502 */ 503 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 504 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 505 506 if (ACPI_FAILURE(rv)) 507 goto fail; 508 509 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 510 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 511 512 if (ACPI_FAILURE(rv)) 513 goto fail; 514 515 acpi_active = 1; 516 517 /* Show SCI interrupt. */ 518 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 519 AcpiGbl_FADT.SciInterrupt); 520 521 /* 522 * Install fixed-event handlers. 523 */ 524 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 525 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 526 527 acpitimer_init(sc); 528 acpi_config_tree(sc); 529 acpi_sleep_init(sc); 530 531 #ifdef ACPI_DEBUG 532 acpi_debug_init(); 533 #endif 534 535 /* 536 * Print debug information. 537 */ 538 acpi_print_verbose(sc); 539 540 return; 541 542 fail: 543 aprint_error("%s: failed to initialize ACPI: %s\n", 544 __func__, AcpiFormatException(rv)); 545 } 546 547 /* 548 * XXX: This is incomplete. 549 */ 550 static int 551 acpi_detach(device_t self, int flags) 552 { 553 struct acpi_softc *sc = device_private(self); 554 ACPI_STATUS rv; 555 int rc; 556 557 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 558 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 559 560 if (ACPI_FAILURE(rv)) 561 return EBUSY; 562 563 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 564 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 565 566 if (ACPI_FAILURE(rv)) 567 return EBUSY; 568 569 if ((rc = config_detach_children(self, flags)) != 0) 570 return rc; 571 572 if ((rc = acpitimer_detach()) != 0) 573 return rc; 574 575 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 576 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 577 578 pmf_device_deregister(self); 579 580 acpi_softc = NULL; 581 582 return 0; 583 } 584 585 static void 586 acpi_childdet(device_t self, device_t child) 587 { 588 struct acpi_softc *sc = device_private(self); 589 struct acpi_devnode *ad; 590 591 if (sc->sc_apmbus == child) 592 sc->sc_apmbus = NULL; 593 594 if (sc->sc_hpet == child) 595 sc->sc_hpet = NULL; 596 597 if (sc->sc_wdrt == child) 598 sc->sc_wdrt = NULL; 599 600 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 601 602 if (ad->ad_device == child) 603 ad->ad_device = NULL; 604 } 605 } 606 607 static bool 608 acpi_suspend(device_t dv, const pmf_qual_t *qual) 609 { 610 611 acpi_suspended = 1; 612 613 return true; 614 } 615 616 static bool 617 acpi_resume(device_t dv, const pmf_qual_t *qual) 618 { 619 620 acpi_suspended = 0; 621 622 return true; 623 } 624 625 /* 626 * Namespace scan. 627 */ 628 static void 629 acpi_build_tree(struct acpi_softc *sc) 630 { 631 struct acpi_walkcontext awc; 632 633 /* 634 * Get the root scope handles. 635 */ 636 KASSERT(__arraycount(acpi_scopes) == 4); 637 638 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 639 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 640 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 641 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 642 643 /* 644 * Make the root node. 645 */ 646 awc.aw_sc = sc; 647 awc.aw_parent = NULL; 648 649 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 650 651 KASSERT(sc->sc_root == NULL); 652 KASSERT(awc.aw_parent != NULL); 653 654 sc->sc_root = awc.aw_parent; 655 656 /* 657 * Build the internal namespace. 658 */ 659 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 660 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 661 662 /* 663 * Scan the internal namespace. 664 */ 665 (void)acpi_pcidev_scan(sc->sc_root); 666 } 667 668 static void 669 acpi_config_tree(struct acpi_softc *sc) 670 { 671 672 /* 673 * Configure all everything found "at acpi?". 674 */ 675 (void)acpi_rescan(sc->sc_dev, NULL, NULL); 676 677 /* 678 * Update GPE information. 679 * 680 * Note that this must be called after 681 * all GPE handlers have been installed. 682 */ 683 (void)AcpiUpdateAllGpes(); 684 685 /* 686 * Defer rest of the configuration. 687 */ 688 (void)config_defer(sc->sc_dev, acpi_rescan_capabilities); 689 } 690 691 static ACPI_STATUS 692 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 693 void *context, void **status) 694 { 695 struct acpi_walkcontext *awc = context; 696 struct acpi_softc *sc = awc->aw_sc; 697 struct acpi_devnode *ad; 698 ACPI_DEVICE_INFO *devinfo; 699 ACPI_OBJECT_TYPE type; 700 ACPI_STATUS rv; 701 702 rv = AcpiGetObjectInfo(handle, &devinfo); 703 704 if (ACPI_FAILURE(rv)) 705 return AE_OK; /* Do not terminate the walk. */ 706 707 type = devinfo->Type; 708 709 switch (type) { 710 711 case ACPI_TYPE_DEVICE: 712 acpi_activate_device(handle, &devinfo); 713 case ACPI_TYPE_PROCESSOR: 714 case ACPI_TYPE_THERMAL: 715 case ACPI_TYPE_POWER: 716 717 ad = kmem_zalloc(sizeof(*ad), KM_SLEEP); 718 719 if (ad == NULL) 720 return AE_NO_MEMORY; 721 722 ad->ad_device = NULL; 723 ad->ad_notify = NULL; 724 ad->ad_pciinfo = NULL; 725 ad->ad_wakedev = NULL; 726 727 ad->ad_type = type; 728 ad->ad_handle = handle; 729 ad->ad_devinfo = devinfo; 730 731 ad->ad_root = sc->sc_dev; 732 ad->ad_parent = awc->aw_parent; 733 734 acpi_match_node_init(ad); 735 acpi_make_name(ad, devinfo->Name); 736 737 /* 738 * Identify wake GPEs from the _PRW. Note that 739 * AcpiUpdateAllGpes() must be called afterwards. 740 */ 741 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) 742 acpi_wakedev_init(ad); 743 744 SIMPLEQ_INIT(&ad->ad_child_head); 745 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 746 747 if (ad->ad_parent != NULL) { 748 749 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 750 ad, ad_child_list); 751 } 752 753 awc->aw_parent = ad; 754 } 755 756 return AE_OK; 757 } 758 759 static ACPI_STATUS 760 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 761 void *context, void **status) 762 { 763 struct acpi_walkcontext *awc = context; 764 765 KASSERT(awc != NULL); 766 KASSERT(awc->aw_parent != NULL); 767 768 if (handle == awc->aw_parent->ad_handle) 769 awc->aw_parent = awc->aw_parent->ad_parent; 770 771 return AE_OK; 772 } 773 774 static void 775 acpi_make_name(struct acpi_devnode *ad, uint32_t name) 776 { 777 ACPI_NAME_UNION *anu; 778 int clear, i; 779 780 anu = (ACPI_NAME_UNION *)&name; 781 ad->ad_name[4] = '\0'; 782 783 for (i = 3, clear = 0; i >= 0; i--) { 784 785 if (clear == 0 && anu->Ascii[i] == '_') 786 ad->ad_name[i] = '\0'; 787 else { 788 ad->ad_name[i] = anu->Ascii[i]; 789 clear = 1; 790 } 791 } 792 793 if (ad->ad_name[0] == '\0') 794 ad->ad_name[0] = '_'; 795 } 796 797 /* 798 * Device attachment. 799 */ 800 static int 801 acpi_rescan(device_t self, const char *ifattr, const int *locators) 802 { 803 struct acpi_softc *sc = device_private(self); 804 struct acpi_attach_args aa; 805 806 /* 807 * Try to attach hpet(4) first via a specific table. 808 */ 809 aa.aa_memt = sc->sc_memt; 810 811 if (ifattr_match(ifattr, "acpihpetbus") && sc->sc_hpet == NULL) 812 sc->sc_hpet = config_found_ia(sc->sc_dev, 813 "acpihpetbus", &aa, NULL); 814 815 /* 816 * A two-pass scan for acpinodebus. 817 */ 818 if (ifattr_match(ifattr, "acpinodebus")) { 819 acpi_rescan_early(sc); 820 acpi_rescan_nodes(sc); 821 } 822 823 /* 824 * Attach APM emulation and acpiwdrt(4). 825 */ 826 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 827 sc->sc_apmbus = config_found_ia(sc->sc_dev, 828 "acpiapmbus", NULL, NULL); 829 830 if (ifattr_match(ifattr, "acpiwdrtbus") && sc->sc_wdrt == NULL) 831 sc->sc_wdrt = config_found_ia(sc->sc_dev, 832 "acpiwdrtbus", NULL, NULL); 833 834 return 0; 835 } 836 837 static void 838 acpi_rescan_early(struct acpi_softc *sc) 839 { 840 struct acpi_attach_args aa; 841 struct acpi_devnode *ad; 842 843 /* 844 * First scan for devices such as acpiec(4) that 845 * should be always attached before anything else. 846 * We want these devices to attach regardless of 847 * the device status and other restrictions. 848 */ 849 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 850 851 if (ad->ad_device != NULL) 852 continue; 853 854 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 855 continue; 856 857 if (acpi_match_hid(ad->ad_devinfo, acpi_early_ids) == 0) 858 continue; 859 860 aa.aa_node = ad; 861 aa.aa_iot = sc->sc_iot; 862 aa.aa_memt = sc->sc_memt; 863 aa.aa_pc = sc->sc_pc; 864 aa.aa_pciflags = sc->sc_pciflags; 865 aa.aa_ic = sc->sc_ic; 866 867 ad->ad_device = config_found_ia(sc->sc_dev, 868 "acpinodebus", &aa, acpi_print); 869 } 870 } 871 872 static void 873 acpi_rescan_nodes(struct acpi_softc *sc) 874 { 875 const char * const hpet_ids[] = { "PNP0103", NULL }; 876 struct acpi_attach_args aa; 877 struct acpi_devnode *ad; 878 ACPI_DEVICE_INFO *di; 879 880 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 881 882 if (ad->ad_device != NULL) 883 continue; 884 885 /* 886 * There is a bug in ACPICA: it defines the type 887 * of the scopes incorrectly for its own reasons. 888 */ 889 if (acpi_is_scope(ad) != false) 890 continue; 891 892 di = ad->ad_devinfo; 893 894 /* 895 * We only attach devices which are present, enabled, and 896 * functioning properly. However, if a device is enabled, 897 * it is decoding resources and we should claim these, 898 * if possible. This requires changes to bus_space(9). 899 * Note: there is a possible race condition, because _STA 900 * may have changed since di->CurrentStatus was set. 901 */ 902 if (di->Type == ACPI_TYPE_DEVICE) { 903 904 if ((di->Valid & ACPI_VALID_STA) != 0 && 905 (di->CurrentStatus & ACPI_STA_OK) != ACPI_STA_OK) 906 continue; 907 } 908 909 if (di->Type == ACPI_TYPE_POWER) 910 continue; 911 912 if (di->Type == ACPI_TYPE_PROCESSOR) 913 continue; 914 915 if (acpi_match_hid(di, acpi_early_ids) != 0) 916 continue; 917 918 if (acpi_match_hid(di, acpi_ignored_ids) != 0) 919 continue; 920 921 if (acpi_match_hid(di, hpet_ids) != 0 && sc->sc_hpet != NULL) 922 continue; 923 924 aa.aa_node = ad; 925 aa.aa_iot = sc->sc_iot; 926 aa.aa_memt = sc->sc_memt; 927 aa.aa_pc = sc->sc_pc; 928 aa.aa_pciflags = sc->sc_pciflags; 929 aa.aa_ic = sc->sc_ic; 930 931 ad->ad_device = config_found_ia(sc->sc_dev, 932 "acpinodebus", &aa, acpi_print); 933 } 934 } 935 936 static void 937 acpi_rescan_capabilities(device_t self) 938 { 939 struct acpi_softc *sc = device_private(self); 940 struct acpi_devnode *ad; 941 ACPI_HANDLE tmp; 942 ACPI_STATUS rv; 943 944 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 945 946 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 947 continue; 948 949 /* 950 * Scan power resource capabilities. 951 * 952 * If any power states are supported, 953 * at least _PR0 and _PR3 must be present. 954 */ 955 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 956 957 if (ACPI_SUCCESS(rv)) { 958 ad->ad_flags |= ACPI_DEVICE_POWER; 959 acpi_power_add(ad); 960 } 961 962 /* 963 * Scan wake-up capabilities. 964 */ 965 if (ad->ad_wakedev != NULL) { 966 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 967 acpi_wakedev_add(ad); 968 } 969 970 /* 971 * Scan docking stations. 972 */ 973 rv = AcpiGetHandle(ad->ad_handle, "_DCK", &tmp); 974 975 if (ACPI_SUCCESS(rv)) 976 ad->ad_flags |= ACPI_DEVICE_DOCK; 977 978 /* 979 * Scan devices that are ejectable. 980 */ 981 rv = AcpiGetHandle(ad->ad_handle, "_EJ0", &tmp); 982 983 if (ACPI_SUCCESS(rv)) 984 ad->ad_flags |= ACPI_DEVICE_EJECT; 985 } 986 } 987 988 static int 989 acpi_print(void *aux, const char *pnp) 990 { 991 struct acpi_attach_args *aa = aux; 992 struct acpi_devnode *ad; 993 const char *hid, *uid; 994 ACPI_DEVICE_INFO *di; 995 996 ad = aa->aa_node; 997 di = ad->ad_devinfo; 998 999 hid = di->HardwareId.String; 1000 uid = di->UniqueId.String; 1001 1002 if (pnp != NULL) { 1003 1004 if (di->Type != ACPI_TYPE_DEVICE) { 1005 1006 aprint_normal("%s (ACPI Object Type '%s') at %s", 1007 ad->ad_name, AcpiUtGetTypeName(ad->ad_type), pnp); 1008 1009 return UNCONF; 1010 } 1011 1012 if ((di->Valid & ACPI_VALID_HID) == 0 || hid == NULL) 1013 return 0; 1014 1015 aprint_normal("%s (%s) ", ad->ad_name, hid); 1016 acpi_print_dev(hid); 1017 aprint_normal("at %s", pnp); 1018 1019 return UNCONF; 1020 } 1021 1022 aprint_normal(" (%s", ad->ad_name); 1023 1024 if ((di->Valid & ACPI_VALID_HID) != 0 && hid != NULL) { 1025 1026 aprint_normal(", %s", hid); 1027 1028 if ((di->Valid & ACPI_VALID_UID) != 0 && uid != NULL) { 1029 1030 if (uid[0] == '\0') 1031 uid = "<null>"; 1032 1033 aprint_normal("-%s", uid); 1034 } 1035 } 1036 1037 aprint_normal(")"); 1038 1039 return UNCONF; 1040 } 1041 1042 /* 1043 * Notify. 1044 */ 1045 static void 1046 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1047 { 1048 struct acpi_softc *sc = acpi_softc; 1049 struct acpi_devnode *ad; 1050 1051 KASSERT(sc != NULL); 1052 KASSERT(aux == NULL); 1053 KASSERT(acpi_active != 0); 1054 1055 if (acpi_suspended != 0) 1056 return; 1057 1058 /* 1059 * System: 0x00 - 0x7F. 1060 * Device: 0x80 - 0xFF. 1061 */ 1062 switch (event) { 1063 1064 case ACPI_NOTIFY_BUS_CHECK: 1065 case ACPI_NOTIFY_DEVICE_CHECK: 1066 case ACPI_NOTIFY_DEVICE_WAKE: 1067 case ACPI_NOTIFY_EJECT_REQUEST: 1068 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1069 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1070 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1071 case ACPI_NOTIFY_POWER_FAULT: 1072 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1073 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1074 case ACPI_NOTIFY_RESERVED: 1075 case ACPI_NOTIFY_LOCALITY_UPDATE: 1076 break; 1077 } 1078 1079 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1080 "%s (%p)\n", event, acpi_name(handle), handle)); 1081 1082 /* 1083 * We deliver notifications only to drivers 1084 * that have been successfully attached and 1085 * that have registered a handler with us. 1086 * The opaque pointer is always the device_t. 1087 */ 1088 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1089 1090 if (ad->ad_device == NULL) 1091 continue; 1092 1093 if (ad->ad_notify == NULL) 1094 continue; 1095 1096 if (ad->ad_handle != handle) 1097 continue; 1098 1099 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1100 1101 return; 1102 } 1103 1104 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1105 "for %s (%p)\n", event, acpi_name(handle), handle); 1106 } 1107 1108 bool 1109 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1110 { 1111 struct acpi_softc *sc = acpi_softc; 1112 1113 KASSERT(sc != NULL); 1114 KASSERT(acpi_active != 0); 1115 1116 if (acpi_suspended != 0) 1117 goto fail; 1118 1119 if (ad == NULL || notify == NULL) 1120 goto fail; 1121 1122 ad->ad_notify = notify; 1123 1124 return true; 1125 1126 fail: 1127 aprint_error_dev(sc->sc_dev, "failed to register notify " 1128 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1129 1130 return false; 1131 } 1132 1133 void 1134 acpi_deregister_notify(struct acpi_devnode *ad) 1135 { 1136 1137 ad->ad_notify = NULL; 1138 } 1139 1140 /* 1141 * Fixed buttons. 1142 */ 1143 static void 1144 acpi_register_fixed_button(struct acpi_softc *sc, int event) 1145 { 1146 struct sysmon_pswitch *smpsw; 1147 ACPI_STATUS rv; 1148 int type; 1149 1150 switch (event) { 1151 1152 case ACPI_EVENT_POWER_BUTTON: 1153 1154 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1155 return; 1156 1157 type = PSWITCH_TYPE_POWER; 1158 smpsw = &sc->sc_smpsw_power; 1159 break; 1160 1161 case ACPI_EVENT_SLEEP_BUTTON: 1162 1163 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1164 return; 1165 1166 type = PSWITCH_TYPE_SLEEP; 1167 smpsw = &sc->sc_smpsw_sleep; 1168 break; 1169 1170 default: 1171 rv = AE_TYPE; 1172 goto fail; 1173 } 1174 1175 smpsw->smpsw_type = type; 1176 smpsw->smpsw_name = device_xname(sc->sc_dev); 1177 1178 if (sysmon_pswitch_register(smpsw) != 0) { 1179 rv = AE_ERROR; 1180 goto fail; 1181 } 1182 1183 AcpiClearEvent(event); 1184 1185 rv = AcpiInstallFixedEventHandler(event, 1186 acpi_fixed_button_handler, smpsw); 1187 1188 if (ACPI_FAILURE(rv)) { 1189 sysmon_pswitch_unregister(smpsw); 1190 goto fail; 1191 } 1192 1193 aprint_debug_dev(sc->sc_dev, "fixed %s button present\n", 1194 (type != ACPI_EVENT_SLEEP_BUTTON) ? "power" : "sleep"); 1195 1196 return; 1197 1198 fail: 1199 aprint_error_dev(sc->sc_dev, "failed to register " 1200 "fixed event %d: %s\n", event, AcpiFormatException(rv)); 1201 } 1202 1203 static void 1204 acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1205 { 1206 struct sysmon_pswitch *smpsw; 1207 ACPI_STATUS rv; 1208 1209 switch (event) { 1210 1211 case ACPI_EVENT_POWER_BUTTON: 1212 smpsw = &sc->sc_smpsw_power; 1213 1214 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1215 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1216 return; 1217 } 1218 1219 break; 1220 1221 case ACPI_EVENT_SLEEP_BUTTON: 1222 smpsw = &sc->sc_smpsw_sleep; 1223 1224 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1225 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1226 return; 1227 } 1228 1229 break; 1230 1231 default: 1232 rv = AE_TYPE; 1233 goto fail; 1234 } 1235 1236 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1237 1238 if (ACPI_SUCCESS(rv)) { 1239 sysmon_pswitch_unregister(smpsw); 1240 return; 1241 } 1242 1243 fail: 1244 aprint_error_dev(sc->sc_dev, "failed to deregister " 1245 "fixed event: %s\n", AcpiFormatException(rv)); 1246 } 1247 1248 static uint32_t 1249 acpi_fixed_button_handler(void *context) 1250 { 1251 static const int handler = OSL_NOTIFY_HANDLER; 1252 struct sysmon_pswitch *smpsw = context; 1253 1254 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1255 1256 return ACPI_INTERRUPT_HANDLED; 1257 } 1258 1259 static void 1260 acpi_fixed_button_pressed(void *context) 1261 { 1262 struct sysmon_pswitch *smpsw = context; 1263 1264 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1265 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1266 "power" : "sleep")); 1267 1268 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1269 } 1270 1271 /* 1272 * Sleep. 1273 */ 1274 static void 1275 acpi_sleep_init(struct acpi_softc *sc) 1276 { 1277 uint8_t a, b, i; 1278 ACPI_STATUS rv; 1279 1280 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1281 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1282 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1283 1284 /* 1285 * Evaluate supported sleep states. 1286 */ 1287 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1288 1289 rv = AcpiGetSleepTypeData(i, &a, &b); 1290 1291 if (ACPI_SUCCESS(rv)) 1292 sc->sc_sleepstates |= __BIT(i); 1293 } 1294 } 1295 1296 /* 1297 * Must be called with interrupts enabled. 1298 */ 1299 void 1300 acpi_enter_sleep_state(int state) 1301 { 1302 struct acpi_softc *sc = acpi_softc; 1303 ACPI_STATUS rv; 1304 1305 if (acpi_softc == NULL) 1306 return; 1307 1308 if (state == sc->sc_sleepstate) 1309 return; 1310 1311 if (state < ACPI_STATE_S0 || state > ACPI_STATE_S5) 1312 return; 1313 1314 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1315 1316 switch (state) { 1317 1318 case ACPI_STATE_S0: 1319 sc->sc_sleepstate = ACPI_STATE_S0; 1320 return; 1321 1322 case ACPI_STATE_S1: 1323 case ACPI_STATE_S2: 1324 case ACPI_STATE_S3: 1325 case ACPI_STATE_S4: 1326 1327 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1328 aprint_error_dev(sc->sc_dev, "sleep state " 1329 "S%d is not available\n", state); 1330 return; 1331 } 1332 1333 /* 1334 * Evaluate the _TTS method. This should be done before 1335 * pmf_system_suspend(9) and the evaluation of _PTS. 1336 * We should also re-evaluate this once we return to 1337 * S0 or if we abort the sleep state transition in the 1338 * middle (see ACPI 3.0, section 7.3.6). In reality, 1339 * however, the _TTS method is seldom seen in the field. 1340 */ 1341 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1342 1343 if (ACPI_SUCCESS(rv)) 1344 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1345 1346 if (state != ACPI_STATE_S1 && 1347 pmf_system_suspend(PMF_Q_NONE) != true) { 1348 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1349 break; 1350 } 1351 1352 /* 1353 * This will evaluate the _PTS and _SST methods, 1354 * but unlike the documentation claims, not _GTS, 1355 * which is evaluated in AcpiEnterSleepState(). 1356 * This must be called with interrupts enabled. 1357 */ 1358 rv = AcpiEnterSleepStatePrep(state); 1359 1360 if (ACPI_FAILURE(rv)) { 1361 aprint_error_dev(sc->sc_dev, "failed to prepare " 1362 "S%d: %s\n", state, AcpiFormatException(rv)); 1363 break; 1364 } 1365 1366 /* 1367 * After the _PTS method has been evaluated, we can 1368 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1369 */ 1370 acpi_wakedev_commit(sc, state); 1371 1372 sc->sc_sleepstate = state; 1373 1374 if (state == ACPI_STATE_S1) { 1375 1376 /* 1377 * Before the transition to S1, CPU caches 1378 * must be flushed (see ACPI 4.0, 7.3.4.2). 1379 * 1380 * Note that interrupts must be off before 1381 * calling AcpiEnterSleepState(). Conversely, 1382 * AcpiLeaveSleepState() should always be 1383 * called with interrupts enabled. 1384 */ 1385 acpi_md_OsDisableInterrupt(); 1386 1387 ACPI_FLUSH_CPU_CACHE(); 1388 rv = AcpiEnterSleepState(state); 1389 1390 if (ACPI_FAILURE(rv)) 1391 aprint_error_dev(sc->sc_dev, "failed to " 1392 "enter S1: %s\n", AcpiFormatException(rv)); 1393 1394 /* 1395 * Clear fixed events and disable all GPEs before 1396 * interrupts are enabled. 1397 */ 1398 AcpiClearEvent(ACPI_EVENT_PMTIMER); 1399 AcpiClearEvent(ACPI_EVENT_GLOBAL); 1400 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON); 1401 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON); 1402 AcpiClearEvent(ACPI_EVENT_RTC); 1403 AcpiHwDisableAllGpes(); 1404 1405 acpi_md_OsEnableInterrupt(); 1406 rv = AcpiLeaveSleepState(state); 1407 1408 } else { 1409 1410 (void)acpi_md_sleep(state); 1411 1412 if (state == ACPI_STATE_S4) 1413 AcpiEnable(); 1414 1415 (void)pmf_system_bus_resume(PMF_Q_NONE); 1416 (void)AcpiLeaveSleepState(state); 1417 (void)AcpiSetFirmwareWakingVector(0, 0); 1418 (void)pmf_system_resume(PMF_Q_NONE); 1419 } 1420 1421 /* 1422 * No wake GPEs should be enabled at runtime. 1423 */ 1424 acpi_wakedev_commit(sc, ACPI_STATE_S0); 1425 break; 1426 1427 case ACPI_STATE_S5: 1428 1429 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1430 1431 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1432 1433 if (ACPI_FAILURE(rv)) { 1434 aprint_error_dev(sc->sc_dev, "failed to prepare " 1435 "S%d: %s\n", state, AcpiFormatException(rv)); 1436 break; 1437 } 1438 1439 (void)AcpiDisableAllGpes(); 1440 1441 DELAY(1000000); 1442 1443 sc->sc_sleepstate = state; 1444 acpi_md_OsDisableInterrupt(); 1445 1446 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1447 1448 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1449 1450 break; 1451 } 1452 1453 sc->sc_sleepstate = ACPI_STATE_S0; 1454 1455 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1456 } 1457 1458 /* 1459 * Sysctl. 1460 */ 1461 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1462 { 1463 const struct sysctlnode *rnode, *snode; 1464 int err; 1465 1466 err = sysctl_createv(clog, 0, NULL, &rnode, 1467 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1468 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1469 NULL, 0, NULL, 0, 1470 CTL_HW, CTL_CREATE, CTL_EOL); 1471 1472 if (err != 0) 1473 return; 1474 1475 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1476 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1477 "root", SYSCTL_DESCR("ACPI root pointer"), 1478 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1479 CTL_CREATE, CTL_EOL); 1480 1481 err = sysctl_createv(clog, 0, &rnode, &snode, 1482 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1483 "sleep", SYSCTL_DESCR("ACPI sleep"), 1484 NULL, 0, NULL, 0, 1485 CTL_CREATE, CTL_EOL); 1486 1487 if (err != 0) 1488 return; 1489 1490 (void)sysctl_createv(NULL, 0, &snode, NULL, 1491 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1492 "state", SYSCTL_DESCR("System sleep state"), 1493 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1494 CTL_CREATE, CTL_EOL); 1495 1496 (void)sysctl_createv(NULL, 0, &snode, NULL, 1497 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1498 "states", SYSCTL_DESCR("Supported sleep states"), 1499 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1500 CTL_CREATE, CTL_EOL); 1501 1502 err = sysctl_createv(clog, 0, &rnode, &rnode, 1503 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1504 "stat", SYSCTL_DESCR("ACPI statistics"), 1505 NULL, 0, NULL, 0, 1506 CTL_CREATE, CTL_EOL); 1507 1508 if (err != 0) 1509 return; 1510 1511 (void)sysctl_createv(clog, 0, &rnode, NULL, 1512 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1513 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1514 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1515 CTL_CREATE, CTL_EOL); 1516 1517 (void)sysctl_createv(clog, 0, &rnode, NULL, 1518 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1519 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1520 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1521 CTL_CREATE, CTL_EOL); 1522 1523 (void)sysctl_createv(clog, 0, &rnode, NULL, 1524 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1525 "fixed", SYSCTL_DESCR("Number of fixed events"), 1526 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1527 CTL_CREATE, CTL_EOL); 1528 1529 (void)sysctl_createv(clog, 0, &rnode, NULL, 1530 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1531 "method", SYSCTL_DESCR("Number of methods executed"), 1532 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1533 CTL_CREATE, CTL_EOL); 1534 1535 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1536 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1537 } 1538 1539 static int 1540 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1541 { 1542 struct sysctlnode node; 1543 uint64_t t; 1544 int err, i; 1545 1546 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1547 t += AcpiFixedEventCount[i]; 1548 1549 node = *rnode; 1550 node.sysctl_data = &t; 1551 1552 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1553 1554 if (err || newp == NULL) 1555 return err; 1556 1557 return 0; 1558 } 1559 1560 static int 1561 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1562 { 1563 struct acpi_softc *sc = acpi_softc; 1564 struct sysctlnode node; 1565 int err, t; 1566 1567 if (acpi_softc == NULL) 1568 return ENOSYS; 1569 1570 node = *rnode; 1571 t = sc->sc_sleepstate; 1572 node.sysctl_data = &t; 1573 1574 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1575 1576 if (err || newp == NULL) 1577 return err; 1578 1579 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1580 return EINVAL; 1581 1582 acpi_enter_sleep_state(t); 1583 1584 return 0; 1585 } 1586 1587 static int 1588 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1589 { 1590 struct acpi_softc *sc = acpi_softc; 1591 struct sysctlnode node; 1592 char t[3 * 6 + 1]; 1593 int err; 1594 1595 if (acpi_softc == NULL) 1596 return ENOSYS; 1597 1598 (void)memset(t, '\0', sizeof(t)); 1599 1600 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1601 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1602 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1603 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1604 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1605 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1606 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1607 1608 node = *rnode; 1609 node.sysctl_data = &t; 1610 1611 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1612 1613 if (err || newp == NULL) 1614 return err; 1615 1616 return 0; 1617 } 1618 1619 /* 1620 * Tables. 1621 */ 1622 ACPI_PHYSICAL_ADDRESS 1623 acpi_OsGetRootPointer(void) 1624 { 1625 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1626 1627 /* 1628 * We let MD code handle this since there are multiple ways to do it: 1629 * 1630 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1631 * 1632 * IA-64: Use the EFI. 1633 */ 1634 PhysicalAddress = acpi_md_OsGetRootPointer(); 1635 1636 if (acpi_root_pointer == 0) 1637 acpi_root_pointer = PhysicalAddress; 1638 1639 return PhysicalAddress; 1640 } 1641 1642 static ACPI_TABLE_HEADER * 1643 acpi_map_rsdt(void) 1644 { 1645 ACPI_PHYSICAL_ADDRESS paddr; 1646 ACPI_TABLE_RSDP *rsdp; 1647 1648 paddr = AcpiOsGetRootPointer(); 1649 1650 if (paddr == 0) 1651 return NULL; 1652 1653 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1654 1655 if (rsdp == NULL) 1656 return NULL; 1657 1658 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1659 paddr = rsdp->XsdtPhysicalAddress; 1660 else 1661 paddr = rsdp->RsdtPhysicalAddress; 1662 1663 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1664 1665 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1666 } 1667 1668 /* 1669 * XXX: Refactor to be a generic function that unmaps tables. 1670 */ 1671 static void 1672 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1673 { 1674 1675 if (rsdt == NULL) 1676 return; 1677 1678 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1679 } 1680 1681 /* 1682 * XXX: Refactor to be a generic function that maps tables. 1683 */ 1684 ACPI_STATUS 1685 acpi_madt_map(void) 1686 { 1687 ACPI_STATUS rv; 1688 1689 if (madt_header != NULL) 1690 return AE_ALREADY_EXISTS; 1691 1692 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); 1693 1694 if (ACPI_FAILURE(rv)) 1695 return rv; 1696 1697 return AE_OK; 1698 } 1699 1700 void 1701 acpi_madt_unmap(void) 1702 { 1703 madt_header = NULL; 1704 } 1705 1706 /* 1707 * XXX: Refactor to be a generic function that walks tables. 1708 */ 1709 void 1710 acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) 1711 { 1712 ACPI_SUBTABLE_HEADER *hdrp; 1713 char *madtend, *where; 1714 1715 madtend = (char *)madt_header + madt_header->Length; 1716 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); 1717 1718 while (where < madtend) { 1719 1720 hdrp = (ACPI_SUBTABLE_HEADER *)where; 1721 1722 if (ACPI_FAILURE(func(hdrp, aux))) 1723 break; 1724 1725 where += hdrp->Length; 1726 } 1727 } 1728 1729 /* 1730 * Miscellaneous. 1731 */ 1732 static bool 1733 acpi_is_scope(struct acpi_devnode *ad) 1734 { 1735 int i; 1736 1737 /* 1738 * Return true if the node is a root scope. 1739 */ 1740 if (ad->ad_parent == NULL) 1741 return false; 1742 1743 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1744 return false; 1745 1746 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1747 1748 if (acpi_scopes[i] == NULL) 1749 continue; 1750 1751 if (ad->ad_handle == acpi_scopes[i]) 1752 return true; 1753 } 1754 1755 return false; 1756 } 1757 1758 /* 1759 * ACPIVERBOSE. 1760 */ 1761 void 1762 acpi_load_verbose(void) 1763 { 1764 1765 if (acpi_verbose_loaded == 0) 1766 module_autoload("acpiverbose", MODULE_CLASS_MISC); 1767 } 1768 1769 void 1770 acpi_print_verbose_stub(struct acpi_softc *sc) 1771 { 1772 1773 acpi_load_verbose(); 1774 1775 if (acpi_verbose_loaded != 0) 1776 acpi_print_verbose(sc); 1777 } 1778 1779 void 1780 acpi_print_dev_stub(const char *pnpstr) 1781 { 1782 1783 acpi_load_verbose(); 1784 1785 if (acpi_verbose_loaded != 0) 1786 acpi_print_dev(pnpstr); 1787 } 1788 1789 MALLOC_DECLARE(M_ACPI); /* XXX: ACPI_ACTIVATE_DEV should use kmem(9). */ 1790 1791 /* 1792 * ACPI_ACTIVATE_DEV. 1793 */ 1794 static void 1795 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 1796 { 1797 1798 #ifndef ACPI_ACTIVATE_DEV 1799 return; 1800 } 1801 #else 1802 static const int valid = ACPI_VALID_STA | ACPI_VALID_HID; 1803 ACPI_DEVICE_INFO *newdi; 1804 ACPI_STATUS rv; 1805 uint32_t old; 1806 1807 /* 1808 * If the device is valid and present, 1809 * but not enabled, try to activate it. 1810 */ 1811 if (((*di)->Valid & valid) != valid) 1812 return; 1813 1814 old = (*di)->CurrentStatus; 1815 1816 if ((old & (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED)) != 1817 ACPI_STA_DEVICE_PRESENT) 1818 return; 1819 1820 rv = acpi_allocate_resources(handle); 1821 1822 if (ACPI_FAILURE(rv)) 1823 goto fail; 1824 1825 rv = AcpiGetObjectInfo(handle, &newdi); 1826 1827 if (ACPI_FAILURE(rv)) 1828 goto fail; 1829 1830 ACPI_FREE(*di); 1831 *di = newdi; 1832 1833 aprint_verbose_dev(acpi_softc->sc_dev, 1834 "%s activated, STA 0x%08X -> STA 0x%08X\n", 1835 (*di)->HardwareId.String, old, (*di)->CurrentStatus); 1836 1837 return; 1838 1839 fail: 1840 aprint_error_dev(acpi_softc->sc_dev, "failed to " 1841 "activate %s\n", (*di)->HardwareId.String); 1842 } 1843 1844 /* 1845 * XXX: This very incomplete. 1846 */ 1847 ACPI_STATUS 1848 acpi_allocate_resources(ACPI_HANDLE handle) 1849 { 1850 ACPI_BUFFER bufp, bufc, bufn; 1851 ACPI_RESOURCE *resp, *resc, *resn; 1852 ACPI_RESOURCE_IRQ *irq; 1853 #if 0 1854 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 1855 #endif 1856 ACPI_STATUS rv; 1857 uint delta; 1858 1859 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 1860 if (ACPI_FAILURE(rv)) 1861 goto out; 1862 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 1863 if (ACPI_FAILURE(rv)) { 1864 goto out1; 1865 } 1866 1867 bufn.Length = 1000; 1868 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 1869 resp = bufp.Pointer; 1870 resc = bufc.Pointer; 1871 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 1872 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1873 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 1874 resp = ACPI_NEXT_RESOURCE(resp); 1875 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 1876 break; 1877 /* Found identical Id */ 1878 resn->Type = resc->Type; 1879 switch (resc->Type) { 1880 case ACPI_RESOURCE_TYPE_IRQ: 1881 memcpy(&resn->Data, &resp->Data, 1882 sizeof(ACPI_RESOURCE_IRQ)); 1883 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 1884 irq->Interrupts[0] = 1885 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 1886 Interrupts[irq->InterruptCount-1]; 1887 irq->InterruptCount = 1; 1888 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 1889 break; 1890 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 1891 memcpy(&resn->Data, &resp->Data, 1892 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 1893 #if 0 1894 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 1895 /* 1896 * XXX: Not duplicating the interrupt logic above 1897 * because its not clear what it accomplishes. 1898 */ 1899 xirq->Interrupts[0] = 1900 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 1901 Interrupts[irq->NumberOfInterrupts-1]; 1902 xirq->NumberOfInterrupts = 1; 1903 #endif 1904 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 1905 break; 1906 case ACPI_RESOURCE_TYPE_IO: 1907 memcpy(&resn->Data, &resp->Data, 1908 sizeof(ACPI_RESOURCE_IO)); 1909 resn->Length = resp->Length; 1910 break; 1911 default: 1912 aprint_error_dev(acpi_softc->sc_dev, 1913 "%s: invalid type %u\n", __func__, resc->Type); 1914 rv = AE_BAD_DATA; 1915 goto out2; 1916 } 1917 resc = ACPI_NEXT_RESOURCE(resc); 1918 resn = ACPI_NEXT_RESOURCE(resn); 1919 resp = ACPI_NEXT_RESOURCE(resp); 1920 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 1921 if (delta >= 1922 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 1923 bufn.Length *= 2; 1924 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 1925 M_ACPI, M_WAITOK); 1926 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 1927 delta); 1928 } 1929 } 1930 1931 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1932 aprint_error_dev(acpi_softc->sc_dev, 1933 "%s: resc not exhausted\n", __func__); 1934 rv = AE_BAD_DATA; 1935 goto out3; 1936 } 1937 1938 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 1939 rv = AcpiSetCurrentResources(handle, &bufn); 1940 1941 if (ACPI_FAILURE(rv)) 1942 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 1943 "resources: %s\n", __func__, AcpiFormatException(rv)); 1944 1945 out3: 1946 free(bufn.Pointer, M_ACPI); 1947 out2: 1948 ACPI_FREE(bufc.Pointer); 1949 out1: 1950 ACPI_FREE(bufp.Pointer); 1951 out: 1952 return rv; 1953 } 1954 1955 #endif /* ACPI_ACTIVATE_DEV */ 1956
Indexes created Thu Sep 25 16:09:42 GMT 2025