1 /* $NetBSD: acpi.c,v 1.304 2026/01/12 20:09:52 joe 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 1.304 2026/01/12 20:09:52 joe Exp $"); 104 105 #include "pci.h" 106 #include "opt_acpi.h" 107 #include "opt_pcifixup.h" 108 109 #include <sys/param.h> 110 #include <sys/atomic.h> 111 #include <sys/device.h> 112 #include <sys/kernel.h> 113 #include <sys/kmem.h> 114 #include <sys/malloc.h> 115 #include <sys/module.h> 116 #include <sys/mutex.h> 117 #include <sys/sysctl.h> 118 #include <sys/systm.h> 119 #include <sys/timetc.h> 120 121 #include <dev/acpi/acpireg.h> 122 #include <dev/acpi/acpivar.h> 123 #include <dev/acpi/acpi_mcfg.h> 124 #include <dev/acpi/acpi_osd.h> 125 #include <dev/acpi/acpi_pci.h> 126 #include <dev/acpi/acpi_power.h> 127 #include <dev/acpi/acpi_timer.h> 128 #include <dev/acpi/acpi_wakedev.h> 129 130 #include <machine/acpi_machdep.h> 131 132 #include "ioconf.h" 133 134 #define _COMPONENT ACPI_BUS_COMPONENT 135 ACPI_MODULE_NAME ("acpi") 136 137 /* 138 * The acpi_active variable is set when the ACPI subsystem is active. 139 * Machine-dependent code may wish to skip other steps (such as attaching 140 * subsystems that ACPI supercedes) when ACPI is active. 141 */ 142 int acpi_active = 0; 143 int acpi_suspended = 0; 144 int acpi_force_load = 0; 145 int acpi_verbose_loaded = 0; 146 147 struct acpi_softc *acpi_softc = NULL; 148 static uint64_t acpi_root_pointer; 149 extern kmutex_t acpi_interrupt_list_mtx; 150 static ACPI_HANDLE acpi_scopes[4]; 151 ACPI_TABLE_HEADER *madt_header; 152 ACPI_TABLE_HEADER *gtdt_header; 153 154 /* 155 * This structure provides a context for the ACPI 156 * namespace walk performed in acpi_build_tree(). 157 */ 158 struct acpi_walkcontext { 159 struct acpi_softc *aw_sc; 160 struct acpi_devnode *aw_parent; 161 }; 162 163 /* 164 * Ignored HIDs. 165 */ 166 static const char * const acpi_ignored_ids[] = { 167 #if defined(i386) || defined(x86_64) 168 "ACPI0007", /* ACPI CPUs do not attach to acpi(4) */ 169 "PNP0000", /* AT interrupt controller is handled internally */ 170 "PNP0001", /* EISA interrupt controller is handled internally */ 171 "PNP0200", /* AT DMA controller is handled internally */ 172 "PNP0A??", /* PCI Busses are handled internally */ 173 "PNP0B00", /* AT RTC is handled internally */ 174 "PNP0C02", /* PnP motherboard resources */ 175 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 176 #endif 177 #if defined(x86_64) 178 "PNP0C04", /* FPU is handled internally */ 179 #endif 180 #if defined(__aarch64__) 181 "ACPI0004", /* ACPI module devices are handled internally */ 182 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 183 #endif 184 NULL 185 }; 186 187 /* 188 * Devices that should be attached early. 189 */ 190 static const char * const acpi_early_ids[] = { 191 "PNP0C09", /* acpiec(4) */ 192 NULL 193 }; 194 195 static int acpi_match(device_t, cfdata_t, void *); 196 static int acpi_submatch(device_t, cfdata_t, const int *, void *); 197 static void acpi_attach(device_t, device_t, void *); 198 static int acpi_detach(device_t, int); 199 static void acpi_childdet(device_t, device_t); 200 static bool acpi_suspend(device_t, const pmf_qual_t *); 201 static bool acpi_resume(device_t, const pmf_qual_t *); 202 203 static void acpi_build_tree(struct acpi_softc *); 204 static void acpi_find_deps(struct acpi_softc *); 205 static void acpi_config_tree(struct acpi_softc *); 206 static void acpi_config_dma(struct acpi_softc *); 207 static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, 208 void *, void **); 209 static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t, 210 void *, void **); 211 static void acpi_make_name(struct acpi_devnode *, uint32_t); 212 213 static int acpi_rescan(device_t, const char *, const int *); 214 static void acpi_rescan_early(struct acpi_softc *); 215 static void acpi_rescan_nodes(struct acpi_softc *); 216 static void acpi_rescan_capabilities(device_t); 217 static int acpi_print(void *aux, const char *); 218 219 static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); 220 221 static void acpi_register_fixed_button(struct acpi_softc *, int); 222 static void acpi_deregister_fixed_button(struct acpi_softc *, int); 223 static uint32_t acpi_fixed_button_handler(void *); 224 static void acpi_fixed_button_pressed(void *); 225 226 static void acpi_sleep_init(struct acpi_softc *); 227 228 static int sysctl_hw_acpi_fixedstats(SYSCTLFN_PROTO); 229 static int sysctl_hw_acpi_sleepstate(SYSCTLFN_PROTO); 230 static int sysctl_hw_acpi_sleepstates(SYSCTLFN_PROTO); 231 232 static bool acpi_is_scope(struct acpi_devnode *); 233 static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 234 static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 235 236 void acpi_print_verbose_stub(struct acpi_softc *); 237 void acpi_print_dev_stub(const char *); 238 239 static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **); 240 ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE); 241 242 void (*acpi_print_verbose)(struct acpi_softc *) = acpi_print_verbose_stub; 243 void (*acpi_print_dev)(const char *) = acpi_print_dev_stub; 244 245 bus_dma_tag_t acpi_default_dma_tag(struct acpi_softc *, struct acpi_devnode *); 246 bus_dma_tag_t acpi_default_dma64_tag(struct acpi_softc *, struct acpi_devnode *); 247 pci_chipset_tag_t acpi_default_pci_chipset_tag(struct acpi_softc *, int, int); 248 249 CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 250 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 251 252 /* 253 * Probe for ACPI support. 254 * 255 * This is called by the machine-dependent ACPI front-end. 256 * Note: this is not an autoconfiguration interface function. 257 */ 258 int 259 acpi_probe(void) 260 { 261 ACPI_TABLE_HEADER *rsdt; 262 ACPI_STATUS rv; 263 int quirks; 264 265 if (acpi_softc != NULL) 266 panic("%s: already probed", __func__); 267 268 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 269 270 /* 271 * Start up ACPICA. 272 */ 273 AcpiGbl_EnableInterpreterSlack = true; 274 275 rv = AcpiInitializeSubsystem(); 276 277 if (ACPI_FAILURE(rv)) { 278 aprint_error("%s: failed to initialize subsystem\n", __func__); 279 return 0; 280 } 281 282 /* 283 * Allocate space for RSDT/XSDT and DSDT, 284 * but allow resizing if more tables exist. 285 */ 286 rv = AcpiInitializeTables(NULL, 2, true); 287 288 if (ACPI_FAILURE(rv)) { 289 aprint_error("%s: failed to initialize tables\n", __func__); 290 goto fail; 291 } 292 293 rv = AcpiLoadTables(); 294 295 if (ACPI_FAILURE(rv)) { 296 aprint_error("%s: failed to load tables\n", __func__); 297 goto fail; 298 } 299 300 rsdt = acpi_map_rsdt(); 301 302 if (rsdt == NULL) { 303 aprint_error("%s: failed to map RSDT\n", __func__); 304 goto fail; 305 } 306 307 quirks = acpi_find_quirks(); 308 309 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_BROKEN) != 0) { 310 311 aprint_normal("ACPI: BIOS is listed as broken:\n"); 312 aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 313 "AslId <%4.4s,%08x>\n", rsdt->OemId, rsdt->OemTableId, 314 rsdt->OemRevision, rsdt->AslCompilerId, 315 rsdt->AslCompilerRevision); 316 aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n"); 317 318 acpi_unmap_rsdt(rsdt); 319 goto fail; 320 } 321 322 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_OLDBIOS) != 0) { 323 324 aprint_normal("ACPI: BIOS is too old (%s). " 325 "Set acpi_force_load to use.\n", 326 pmf_get_platform("bios-date")); 327 328 acpi_unmap_rsdt(rsdt); 329 goto fail; 330 } 331 332 acpi_unmap_rsdt(rsdt); 333 334 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 335 336 if (ACPI_FAILURE(rv)) { 337 aprint_error("%s: failed to enable subsystem\n", __func__); 338 goto fail; 339 } 340 341 return 1; 342 343 fail: 344 (void)AcpiTerminate(); 345 346 return 0; 347 } 348 349 void 350 acpi_disable(void) 351 { 352 353 if (acpi_softc == NULL) 354 return; 355 356 KASSERT(acpi_active != 0); 357 358 if (AcpiGbl_FADT.SmiCommand != 0) 359 AcpiDisable(); 360 } 361 362 int 363 acpi_check(device_t parent, const char *ifattr) 364 { 365 return config_search(parent, NULL, 366 CFARGS(.submatch = acpi_submatch, 367 .iattr = ifattr)) != NULL; 368 } 369 370 int 371 acpi_reset(void) 372 { 373 struct acpi_softc *sc = acpi_softc; 374 ACPI_GENERIC_ADDRESS *ResetReg; 375 ACPI_PCI_ID PciId; 376 ACPI_STATUS status; 377 378 if (sc == NULL) 379 return ENXIO; 380 381 ResetReg = &AcpiGbl_FADT.ResetRegister; 382 383 /* Check if the reset register is supported */ 384 if (!(AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) || 385 !ResetReg->Address) { 386 return ENOENT; 387 } 388 389 switch (ResetReg->SpaceId) { 390 case ACPI_ADR_SPACE_PCI_CONFIG: 391 PciId.Segment = PciId.Bus = 0; 392 PciId.Device = ACPI_GAS_PCI_DEV(ResetReg->Address); 393 PciId.Function = ACPI_GAS_PCI_FUNC(ResetReg->Address); 394 status = AcpiOsWritePciConfiguration(&PciId, 395 ACPI_GAS_PCI_REGOFF(ResetReg->Address), 396 AcpiGbl_FADT.ResetValue, ResetReg->BitWidth); 397 break; 398 case ACPI_ADR_SPACE_SYSTEM_IO: 399 case ACPI_ADR_SPACE_SYSTEM_MEMORY: 400 status = AcpiReset(); 401 break; 402 default: 403 status = AE_TYPE; 404 break; 405 } 406 407 return ACPI_FAILURE(status) ? EIO : 0; 408 } 409 410 /* 411 * Autoconfiguration. 412 */ 413 static int 414 acpi_match(device_t parent, cfdata_t match, void *aux) 415 { 416 /* 417 * XXX: Nada; MD code has called acpi_probe(). 418 */ 419 return 1; 420 } 421 422 static int 423 acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 424 { 425 struct cfattach *ca; 426 427 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 428 429 return (ca == &acpi_ca); 430 } 431 432 static void 433 acpi_attach(device_t parent, device_t self, void *aux) 434 { 435 struct acpi_softc *sc = device_private(self); 436 struct acpibus_attach_args *aa = aux; 437 ACPI_TABLE_HEADER *rsdt, *hdr; 438 ACPI_STATUS rv; 439 int i; 440 441 aprint_naive("\n"); 442 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 443 444 if (acpi_softc != NULL) 445 panic("%s: already attached", __func__); 446 447 rsdt = acpi_map_rsdt(); 448 449 if (rsdt == NULL) 450 aprint_error_dev(self, "X/RSDT: Not found\n"); 451 else { 452 aprint_verbose_dev(self, 453 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 454 rsdt->OemId, rsdt->OemTableId, 455 rsdt->OemRevision, 456 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 457 } 458 459 acpi_unmap_rsdt(rsdt); 460 461 sc->sc_dev = self; 462 sc->sc_root = NULL; 463 464 sc->sc_sleepstate = ACPI_STATE_S0; 465 sc->sc_quirks = acpi_find_quirks(); 466 467 sysmon_power_settype("acpi"); 468 469 sc->sc_iot = aa->aa_iot; 470 sc->sc_memt = aa->aa_memt; 471 sc->sc_pciflags = aa->aa_pciflags; 472 sc->sc_ic = aa->aa_ic; 473 sc->sc_dmat = aa->aa_dmat; 474 sc->sc_dmat64 = aa->aa_dmat64; 475 476 SIMPLEQ_INIT(&sc->sc_head); 477 478 acpi_softc = sc; 479 480 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) 481 aprint_error_dev(self, "couldn't establish power handler\n"); 482 483 /* 484 * Bring ACPICA on-line. 485 */ 486 487 rv = AcpiEnableSubsystem(ACPI_FULL_INITIALIZATION); 488 489 if (ACPI_FAILURE(rv)) 490 goto fail; 491 492 /* 493 * Early initialization of acpiec(4) via ECDT. 494 */ 495 config_found(self, aa, NULL, 496 CFARGS(.iattr = "acpiecdtbus")); 497 498 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 499 500 if (ACPI_FAILURE(rv)) 501 goto fail; 502 503 /* 504 * Scan the namespace and build our device tree. 505 */ 506 acpi_build_tree(sc); 507 508 #if NPCI > 0 509 /* 510 * Probe MCFG table 511 */ 512 acpimcfg_probe(sc); 513 #endif 514 515 acpi_md_callback(sc); 516 517 /* 518 * Early initialization of the _PDC control method 519 * that may load additional SSDT tables dynamically. 520 */ 521 (void)acpi_md_pdc(); 522 523 /* 524 * Install global notify handlers. 525 */ 526 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 527 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 528 529 if (ACPI_FAILURE(rv)) 530 goto fail; 531 532 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 533 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 534 535 if (ACPI_FAILURE(rv)) 536 goto fail; 537 538 acpi_active = 1; 539 540 if (!AcpiGbl_ReducedHardware) { 541 /* Show SCI interrupt. */ 542 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 543 AcpiGbl_FADT.SciInterrupt); 544 545 /* 546 * Install fixed-event handlers. 547 */ 548 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 549 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 550 } 551 552 /* 553 * Load drivers that operate on System Description Tables. 554 */ 555 for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i) { 556 rv = AcpiGetTableByIndex(i, &hdr); 557 if (ACPI_FAILURE(rv)) { 558 continue; 559 } 560 config_found(sc->sc_dev, hdr, NULL, 561 CFARGS(.iattr = "acpisdtbus")); 562 AcpiPutTable(hdr); 563 } 564 565 acpitimer_init(sc); 566 acpi_config_tree(sc); 567 acpi_sleep_init(sc); 568 569 #ifdef ACPI_DEBUG 570 acpi_debug_init(); 571 #endif 572 573 /* 574 * Print debug information. 575 */ 576 acpi_print_verbose(sc); 577 578 return; 579 580 fail: 581 aprint_error("%s: failed to initialize ACPI: %s\n", 582 __func__, AcpiFormatException(rv)); 583 } 584 585 /* 586 * XXX: This is incomplete. 587 */ 588 static int 589 acpi_detach(device_t self, int flags) 590 { 591 struct acpi_softc *sc = device_private(self); 592 ACPI_STATUS rv; 593 int rc; 594 595 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 596 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 597 598 if (ACPI_FAILURE(rv)) 599 return EBUSY; 600 601 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 602 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 603 604 if (ACPI_FAILURE(rv)) 605 return EBUSY; 606 607 if ((rc = config_detach_children(self, flags)) != 0) 608 return rc; 609 610 if ((rc = acpitimer_detach()) != 0) 611 return rc; 612 613 if (!AcpiGbl_ReducedHardware) { 614 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 615 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 616 } 617 618 pmf_device_deregister(self); 619 620 acpi_softc = NULL; 621 622 return 0; 623 } 624 625 static void 626 acpi_childdet(device_t self, device_t child) 627 { 628 struct acpi_softc *sc = device_private(self); 629 struct acpi_devnode *ad; 630 631 if (sc->sc_apmbus == child) 632 sc->sc_apmbus = NULL; 633 634 if (sc->sc_hpet == child) 635 sc->sc_hpet = NULL; 636 637 if (sc->sc_wdrt == child) 638 sc->sc_wdrt = NULL; 639 640 if (sc->sc_apei == child) 641 sc->sc_apei = NULL; 642 643 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) { 644 645 if (ad->ad_device == child) 646 ad->ad_device = NULL; 647 } 648 } 649 650 static bool 651 acpi_suspend(device_t dv, const pmf_qual_t *qual) 652 { 653 654 acpi_suspended = 1; 655 656 return true; 657 } 658 659 static bool 660 acpi_resume(device_t dv, const pmf_qual_t *qual) 661 { 662 663 acpi_suspended = 0; 664 665 return true; 666 } 667 668 /* 669 * Namespace scan. 670 */ 671 static void 672 acpi_build_tree(struct acpi_softc *sc) 673 { 674 struct acpi_walkcontext awc; 675 676 /* 677 * Get the root scope handles. 678 */ 679 KASSERT(__arraycount(acpi_scopes) == 4); 680 681 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 682 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 683 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 684 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 685 686 /* 687 * Make the root node. 688 */ 689 awc.aw_sc = sc; 690 awc.aw_parent = NULL; 691 692 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 693 694 KASSERT(sc->sc_root == NULL); 695 KASSERT(awc.aw_parent != NULL); 696 697 sc->sc_root = awc.aw_parent; 698 699 /* 700 * Build the internal namespace. 701 */ 702 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 703 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 704 705 /* 706 * Find device dependencies. 707 */ 708 acpi_find_deps(sc); 709 710 #if NPCI > 0 711 /* 712 * Scan the internal namespace. 713 */ 714 (void)acpi_pcidev_scan(sc->sc_root); 715 #endif 716 } 717 718 static void 719 acpi_add_dep(struct acpi_devnode *ad, struct acpi_devnode *depad) 720 { 721 struct acpi_devnodedep *dd; 722 723 dd = kmem_alloc(sizeof(*dd), KM_SLEEP); 724 dd->dd_node = depad; 725 SIMPLEQ_INSERT_TAIL(&ad->ad_deps, dd, dd_list); 726 } 727 728 static void 729 acpi_find_deps(struct acpi_softc *sc) 730 { 731 struct acpi_devnode *ad; 732 733 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) { 734 struct acpi_devnode *depad; 735 ACPI_OBJECT *obj; 736 ACPI_HANDLE _dep; 737 ACPI_BUFFER buf; 738 ACPI_STATUS rv; 739 u_int ref; 740 741 if (acpi_is_scope(ad) || 742 ad->ad_parent == NULL || 743 ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) { 744 continue; 745 } 746 747 /* Add an implicit dependency on parent devices. */ 748 if (!acpi_is_scope(ad->ad_parent) && 749 ad->ad_parent->ad_devinfo->Type == ACPI_TYPE_DEVICE) { 750 acpi_add_dep(ad, ad->ad_parent); 751 } 752 753 rv = AcpiGetHandle(ad->ad_handle, "_DEP", &_dep); 754 if (ACPI_FAILURE(rv)) { 755 goto logit; 756 } 757 758 buf.Pointer = NULL; 759 buf.Length = ACPI_ALLOCATE_BUFFER; 760 rv = AcpiEvaluateObjectTyped(_dep, NULL, NULL, &buf, 761 ACPI_TYPE_PACKAGE); 762 if (ACPI_FAILURE(rv)) { 763 goto logit; 764 } 765 obj = buf.Pointer; 766 767 for (ref = 0; ref < obj->Package.Count; ref++) { 768 ACPI_OBJECT *robj = &obj->Package.Elements[ref]; 769 ACPI_HANDLE rhdl; 770 771 rv = acpi_eval_reference_handle(robj, &rhdl); 772 if (ACPI_FAILURE(rv)) { 773 continue; 774 } 775 776 depad = acpi_match_node(rhdl); 777 if (depad != NULL) { 778 acpi_add_dep(ad, depad); 779 } 780 } 781 782 ACPI_FREE(buf.Pointer); 783 784 logit: 785 if (!SIMPLEQ_EMPTY(&ad->ad_deps)) { 786 struct acpi_devnodedep *dd; 787 788 aprint_debug_dev(sc->sc_dev, "%s dependencies:", 789 ad->ad_name); 790 SIMPLEQ_FOREACH(dd, &ad->ad_deps, dd_list) { 791 aprint_debug(" %s", dd->dd_node->ad_name); 792 } 793 aprint_debug("\n"); 794 } 795 } 796 } 797 798 static void 799 acpi_config_tree(struct acpi_softc *sc) 800 { 801 /* 802 * Assign bus_dma resources 803 */ 804 acpi_config_dma(sc); 805 806 /* 807 * Configure all everything found "at acpi?". 808 */ 809 (void)acpi_rescan(sc->sc_dev, NULL, NULL); 810 811 /* 812 * Update GPE information. 813 * 814 * Note that this must be called after 815 * all GPE handlers have been installed. 816 */ 817 (void)AcpiUpdateAllGpes(); 818 819 /* 820 * Defer rest of the configuration. 821 */ 822 (void)config_defer(sc->sc_dev, acpi_rescan_capabilities); 823 } 824 825 // XXXNH? 826 static void 827 acpi_config_dma(struct acpi_softc *sc) 828 { 829 struct acpi_devnode *ad; 830 831 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) { 832 833 if (ad->ad_device != NULL) 834 continue; 835 836 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 837 continue; 838 839 ad->ad_dmat = acpi_get_dma_tag(sc, ad); 840 ad->ad_dmat64 = acpi_get_dma64_tag(sc, ad); 841 } 842 } 843 844 static ACPI_STATUS 845 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 846 void *context, void **status) 847 { 848 struct acpi_walkcontext *awc = context; 849 struct acpi_softc *sc = awc->aw_sc; 850 struct acpi_devnode *ad; 851 ACPI_DEVICE_INFO *devinfo; 852 ACPI_OBJECT_TYPE type; 853 ACPI_STATUS rv; 854 855 rv = AcpiGetObjectInfo(handle, &devinfo); 856 857 if (ACPI_FAILURE(rv)) 858 return AE_OK; /* Do not terminate the walk. */ 859 860 type = devinfo->Type; 861 862 switch (type) { 863 864 case ACPI_TYPE_DEVICE: 865 acpi_activate_device(handle, &devinfo); 866 /* FALLTHROUGH */ 867 868 case ACPI_TYPE_PROCESSOR: 869 case ACPI_TYPE_THERMAL: 870 case ACPI_TYPE_POWER: 871 872 ad = kmem_zalloc(sizeof(*ad), KM_SLEEP); 873 874 ad->ad_device = NULL; 875 ad->ad_notify = NULL; 876 ad->ad_pciinfo = NULL; 877 ad->ad_wakedev = NULL; 878 879 ad->ad_type = type; 880 ad->ad_handle = handle; 881 ad->ad_devinfo = devinfo; 882 883 ad->ad_root = sc->sc_dev; 884 ad->ad_parent = awc->aw_parent; 885 886 acpi_match_node_init(ad); 887 acpi_make_name(ad, devinfo->Name); 888 889 /* 890 * Identify wake GPEs from the _PRW. Note that 891 * AcpiUpdateAllGpes() must be called afterwards. 892 */ 893 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) 894 acpi_wakedev_init(ad); 895 896 SIMPLEQ_INIT(&ad->ad_child_head); 897 SIMPLEQ_INSERT_TAIL(&sc->sc_head, ad, ad_list); 898 SIMPLEQ_INIT(&ad->ad_deps); 899 900 if (ad->ad_parent != NULL) { 901 902 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 903 ad, ad_child_list); 904 } 905 906 awc->aw_parent = ad; 907 break; 908 909 default: 910 ACPI_FREE(devinfo); 911 break; 912 } 913 914 return AE_OK; 915 } 916 917 static ACPI_STATUS 918 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 919 void *context, void **status) 920 { 921 struct acpi_walkcontext *awc = context; 922 923 KASSERT(awc != NULL); 924 KASSERT(awc->aw_parent != NULL); 925 926 if (handle == awc->aw_parent->ad_handle) 927 awc->aw_parent = awc->aw_parent->ad_parent; 928 929 return AE_OK; 930 } 931 932 static void 933 acpi_make_name(struct acpi_devnode *ad, uint32_t name) 934 { 935 ACPI_NAME_UNION *anu; 936 int clear, i; 937 938 anu = (ACPI_NAME_UNION *)&name; 939 ad->ad_name[4] = '\0'; 940 941 for (i = 3, clear = 0; i >= 0; i--) { 942 943 if (clear == 0 && anu->Ascii[i] == '_') 944 ad->ad_name[i] = '\0'; 945 else { 946 ad->ad_name[i] = anu->Ascii[i]; 947 clear = 1; 948 } 949 } 950 951 if (ad->ad_name[0] == '\0') 952 ad->ad_name[0] = '_'; 953 } 954 955 bus_dma_tag_t 956 acpi_default_dma_tag(struct acpi_softc *sc, struct acpi_devnode *ad) 957 { 958 return sc->sc_dmat; 959 } 960 __weak_alias(acpi_get_dma_tag,acpi_default_dma_tag); 961 962 bus_dma_tag_t 963 acpi_default_dma64_tag(struct acpi_softc *sc, struct acpi_devnode *ad) 964 { 965 return sc->sc_dmat64; 966 } 967 __weak_alias(acpi_get_dma64_tag,acpi_default_dma64_tag); 968 969 pci_chipset_tag_t 970 acpi_default_pci_chipset_tag(struct acpi_softc *sc, int seg, int bbn) 971 { 972 return NULL; 973 } 974 __weak_alias(acpi_get_pci_chipset_tag,acpi_default_pci_chipset_tag); 975 976 /* 977 * Device attachment. 978 */ 979 static int 980 acpi_rescan(device_t self, const char *ifattr, const int *locators) 981 { 982 struct acpi_softc *sc = device_private(self); 983 struct acpi_attach_args aa; 984 985 /* 986 * Try to attach hpet(4) first via a specific table. 987 */ 988 aa.aa_memt = sc->sc_memt; 989 990 if (ifattr_match(ifattr, "acpihpetbus") && sc->sc_hpet == NULL) { 991 sc->sc_hpet = config_found(sc->sc_dev, &aa, NULL, 992 CFARGS(.iattr = "acpihpetbus")); 993 } 994 995 /* 996 * A two-pass scan for acpinodebus. 997 */ 998 if (ifattr_match(ifattr, "acpinodebus")) { 999 acpi_rescan_early(sc); 1000 acpi_rescan_nodes(sc); 1001 } 1002 1003 /* 1004 * Attach APM emulation and acpiwdrt(4). 1005 */ 1006 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) { 1007 sc->sc_apmbus = config_found(sc->sc_dev, NULL, NULL, 1008 CFARGS(.iattr = "acpiapmbus")); 1009 } 1010 1011 if (ifattr_match(ifattr, "acpiwdrtbus") && sc->sc_wdrt == NULL) { 1012 sc->sc_wdrt = config_found(sc->sc_dev, NULL, NULL, 1013 CFARGS(.iattr = "acpiwdrtbus")); 1014 } 1015 1016 if (ifattr_match(ifattr, "apeibus") && sc->sc_apei == NULL) { 1017 sc->sc_apei = config_found(sc->sc_dev, NULL, NULL, 1018 CFARGS(.iattr = "apeibus")); 1019 } 1020 1021 return 0; 1022 } 1023 1024 static void 1025 acpi_rescan_node(struct acpi_softc *sc, struct acpi_devnode *ad) 1026 { 1027 const char * const hpet_ids[] = { "PNP0103", NULL }; 1028 struct acpi_attach_args aa; 1029 struct acpi_devnodedep *dd; 1030 ACPI_DEVICE_INFO *di = ad->ad_devinfo; 1031 1032 if (ad->ad_scanned || ad->ad_device != NULL) { 1033 return; 1034 } 1035 1036 /* 1037 * Mark as scanned before checking dependencies to 1038 * break out of dependency cycles. 1039 */ 1040 ad->ad_scanned = true; 1041 1042 if (!acpi_device_present(ad->ad_handle)) { 1043 return; 1044 } 1045 1046 if (acpi_match_hid(di, acpi_ignored_ids) != 0) { 1047 return; 1048 } 1049 1050 if (acpi_match_hid(di, hpet_ids) != 0 && sc->sc_hpet != NULL) { 1051 return; 1052 } 1053 1054 /* Rescan dependencies first. */ 1055 SIMPLEQ_FOREACH(dd, &ad->ad_deps, dd_list) { 1056 if (!dd->dd_node->ad_scanned) { 1057 acpi_rescan_node(sc, dd->dd_node); 1058 } 1059 } 1060 1061 /* Dependency scanning may have claimed this device. */ 1062 if (ad->ad_device != NULL) { 1063 return; 1064 } 1065 1066 aa.aa_node = ad; 1067 aa.aa_iot = sc->sc_iot; 1068 aa.aa_memt = sc->sc_memt; 1069 if (ad->ad_pciinfo != NULL) { 1070 aa.aa_pc = ad->ad_pciinfo->ap_pc; 1071 aa.aa_pciflags = sc->sc_pciflags; 1072 } 1073 aa.aa_ic = sc->sc_ic; 1074 aa.aa_dmat = ad->ad_dmat; 1075 aa.aa_dmat64 = ad->ad_dmat64; 1076 1077 ad->ad_device = config_found(sc->sc_dev, &aa, acpi_print, 1078 CFARGS(.iattr = "acpinodebus", 1079 .devhandle = devhandle_from_acpi(devhandle_invalid(), 1080 ad->ad_handle))); 1081 } 1082 1083 static void 1084 acpi_rescan_early(struct acpi_softc *sc) 1085 { 1086 struct acpi_devnode *ad; 1087 1088 /* 1089 * First scan for devices such as acpiec(4) that 1090 * should be always attached before anything else. 1091 * We want these devices to attach regardless of 1092 * the device status and other restrictions. 1093 */ 1094 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) { 1095 1096 if (ad->ad_device != NULL) 1097 continue; 1098 1099 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 1100 continue; 1101 1102 if (acpi_match_hid(ad->ad_devinfo, acpi_early_ids) == 0) 1103 continue; 1104 1105 KASSERT(ad->ad_handle != NULL); 1106 1107 acpi_rescan_node(sc, ad); 1108 } 1109 } 1110 1111 static void 1112 acpi_rescan_nodes(struct acpi_softc *sc) 1113 { 1114 struct acpi_devnode *ad; 1115 ACPI_DEVICE_INFO *di; 1116 1117 /* Reset scan state. */ 1118 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) { 1119 ad->ad_scanned = false; 1120 } 1121 1122 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) { 1123 1124 if (ad->ad_device != NULL) 1125 continue; 1126 1127 /* 1128 * There is a bug in ACPICA: it defines the type 1129 * of the scopes incorrectly for its own reasons. 1130 */ 1131 if (acpi_is_scope(ad) != false) 1132 continue; 1133 1134 di = ad->ad_devinfo; 1135 1136 /* 1137 * We only attach devices which are present, enabled, and 1138 * functioning properly. However, if a device is enabled, 1139 * it is decoding resources and we should claim these, 1140 * if possible. This requires changes to bus_space(9). 1141 */ 1142 if (di->Type == ACPI_TYPE_DEVICE && 1143 !acpi_device_present(ad->ad_handle)) { 1144 continue; 1145 } 1146 1147 if (di->Type == ACPI_TYPE_POWER) 1148 continue; 1149 1150 if (di->Type == ACPI_TYPE_PROCESSOR) 1151 continue; 1152 1153 if (acpi_match_hid(di, acpi_early_ids) != 0) 1154 continue; 1155 1156 KASSERT(ad->ad_handle != NULL); 1157 1158 acpi_rescan_node(sc, ad); 1159 } 1160 } 1161 1162 static void 1163 acpi_rescan_capabilities(device_t self) 1164 { 1165 struct acpi_softc *sc = device_private(self); 1166 struct acpi_devnode *ad; 1167 ACPI_HANDLE tmp; 1168 ACPI_STATUS rv; 1169 1170 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) { 1171 1172 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 1173 continue; 1174 1175 /* 1176 * Scan power resource capabilities. 1177 * 1178 * If any power states are supported, 1179 * at least _PR0 and _PR3 must be present. 1180 */ 1181 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 1182 1183 if (ACPI_SUCCESS(rv)) { 1184 ad->ad_flags |= ACPI_DEVICE_POWER; 1185 acpi_power_add(ad); 1186 } 1187 1188 /* 1189 * Scan wake-up capabilities. 1190 */ 1191 if (ad->ad_wakedev != NULL) { 1192 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 1193 acpi_wakedev_add(ad); 1194 } 1195 1196 /* 1197 * Scan docking stations. 1198 */ 1199 rv = AcpiGetHandle(ad->ad_handle, "_DCK", &tmp); 1200 1201 if (ACPI_SUCCESS(rv)) 1202 ad->ad_flags |= ACPI_DEVICE_DOCK; 1203 1204 /* 1205 * Scan devices that are ejectable. 1206 */ 1207 rv = AcpiGetHandle(ad->ad_handle, "_EJ0", &tmp); 1208 1209 if (ACPI_SUCCESS(rv)) 1210 ad->ad_flags |= ACPI_DEVICE_EJECT; 1211 } 1212 } 1213 1214 static int 1215 acpi_print(void *aux, const char *pnp) 1216 { 1217 struct acpi_attach_args *aa = aux; 1218 struct acpi_devnode *ad; 1219 const char *hid, *uid; 1220 ACPI_DEVICE_INFO *di; 1221 1222 ad = aa->aa_node; 1223 di = ad->ad_devinfo; 1224 1225 hid = di->HardwareId.String; 1226 uid = di->UniqueId.String; 1227 1228 if (pnp != NULL) { 1229 1230 if (di->Type != ACPI_TYPE_DEVICE) { 1231 1232 aprint_normal("%s (ACPI Object Type '%s') at %s", 1233 ad->ad_name, AcpiUtGetTypeName(ad->ad_type), pnp); 1234 1235 return UNCONF; 1236 } 1237 1238 if ((di->Valid & ACPI_VALID_HID) == 0 || hid == NULL) 1239 return 0; 1240 1241 aprint_normal("%s (%s) ", ad->ad_name, hid); 1242 acpi_print_dev(hid); 1243 aprint_normal("at %s", pnp); 1244 1245 return UNCONF; 1246 } 1247 1248 aprint_normal(" (%s", ad->ad_name); 1249 1250 if ((di->Valid & ACPI_VALID_HID) != 0 && hid != NULL) { 1251 1252 aprint_normal(", %s", hid); 1253 1254 if ((di->Valid & ACPI_VALID_UID) != 0 && uid != NULL) { 1255 1256 if (uid[0] == '\0') 1257 uid = "<null>"; 1258 1259 aprint_normal("-%s", uid); 1260 } 1261 } 1262 1263 aprint_normal(")"); 1264 1265 return UNCONF; 1266 } 1267 1268 /* 1269 * Notify. 1270 */ 1271 static void 1272 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1273 { 1274 struct acpi_softc *sc = acpi_softc; 1275 struct acpi_devnode *ad; 1276 ACPI_NOTIFY_HANDLER notify; 1277 1278 KASSERT(sc != NULL); 1279 KASSERT(aux == NULL); 1280 KASSERT(acpi_active != 0); 1281 1282 if (acpi_suspended != 0) 1283 return; 1284 1285 /* 1286 * System: 0x00 - 0x7F. 1287 * Device: 0x80 - 0xFF. 1288 */ 1289 switch (event) { 1290 1291 case ACPI_NOTIFY_BUS_CHECK: 1292 case ACPI_NOTIFY_DEVICE_CHECK: 1293 case ACPI_NOTIFY_DEVICE_WAKE: 1294 case ACPI_NOTIFY_EJECT_REQUEST: 1295 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1296 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1297 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1298 case ACPI_NOTIFY_POWER_FAULT: 1299 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1300 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1301 case ACPI_NOTIFY_RESERVED: 1302 case ACPI_NOTIFY_LOCALITY_UPDATE: 1303 break; 1304 } 1305 1306 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1307 "%s (%p)\n", event, acpi_name(handle), handle)); 1308 1309 /* 1310 * We deliver notifications only to drivers 1311 * that have been successfully attached and 1312 * that have registered a handler with us. 1313 * The opaque pointer is always the device_t. 1314 */ 1315 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) { 1316 1317 if (ad->ad_device == NULL) 1318 continue; 1319 1320 if ((notify = atomic_load_acquire(&ad->ad_notify)) == NULL) 1321 continue; 1322 1323 if (ad->ad_handle != handle) 1324 continue; 1325 1326 (*notify)(ad->ad_handle, event, ad->ad_device); 1327 1328 return; 1329 } 1330 1331 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1332 "for %s (%p)\n", event, acpi_name(handle), handle); 1333 } 1334 1335 bool 1336 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1337 { 1338 struct acpi_softc *sc = acpi_softc; 1339 1340 KASSERT(sc != NULL); 1341 KASSERT(acpi_active != 0); 1342 1343 if (acpi_suspended != 0) 1344 goto fail; 1345 1346 if (ad == NULL || notify == NULL) 1347 goto fail; 1348 1349 KASSERTMSG(ad->ad_notify == NULL, 1350 "%s: ACPI node %s already has notify handler: %p", 1351 ad->ad_device ? device_xname(ad->ad_device) : "(unknown)", 1352 ad->ad_name, 1353 ad->ad_notify); 1354 atomic_store_release(&ad->ad_notify, notify); 1355 1356 return true; 1357 1358 fail: 1359 if (!ad) 1360 aprint_error_dev(sc->sc_dev, "failed to initialize ACPI\n"); 1361 else 1362 aprint_error_dev(sc->sc_dev, "failed to register notify " 1363 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1364 1365 return false; 1366 } 1367 1368 void 1369 acpi_deregister_notify(struct acpi_devnode *ad) 1370 { 1371 1372 atomic_store_relaxed(&ad->ad_notify, NULL); 1373 1374 /* Wait for any in-flight calls to the notifier to complete. */ 1375 AcpiOsWaitEventsComplete(); 1376 } 1377 1378 /* 1379 * Fixed buttons. 1380 */ 1381 static void 1382 acpi_register_fixed_button(struct acpi_softc *sc, int event) 1383 { 1384 struct sysmon_pswitch *smpsw; 1385 ACPI_STATUS rv; 1386 int type; 1387 1388 switch (event) { 1389 1390 case ACPI_EVENT_POWER_BUTTON: 1391 1392 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1393 return; 1394 1395 type = PSWITCH_TYPE_POWER; 1396 smpsw = &sc->sc_smpsw_power; 1397 break; 1398 1399 case ACPI_EVENT_SLEEP_BUTTON: 1400 1401 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1402 return; 1403 1404 type = PSWITCH_TYPE_SLEEP; 1405 smpsw = &sc->sc_smpsw_sleep; 1406 break; 1407 1408 default: 1409 rv = AE_TYPE; 1410 goto fail; 1411 } 1412 1413 smpsw->smpsw_type = type; 1414 smpsw->smpsw_name = device_xname(sc->sc_dev); 1415 1416 if (sysmon_pswitch_register(smpsw) != 0) { 1417 rv = AE_ERROR; 1418 goto fail; 1419 } 1420 1421 AcpiClearEvent(event); 1422 1423 rv = AcpiInstallFixedEventHandler(event, 1424 acpi_fixed_button_handler, smpsw); 1425 1426 if (ACPI_FAILURE(rv)) { 1427 sysmon_pswitch_unregister(smpsw); 1428 goto fail; 1429 } 1430 1431 aprint_normal_dev(sc->sc_dev, "fixed %s button present\n", 1432 (type != PSWITCH_TYPE_SLEEP) ? "power" : "sleep"); 1433 1434 return; 1435 1436 fail: 1437 aprint_error_dev(sc->sc_dev, "failed to register " 1438 "fixed event %d: %s\n", event, AcpiFormatException(rv)); 1439 } 1440 1441 static void 1442 acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1443 { 1444 struct sysmon_pswitch *smpsw; 1445 ACPI_STATUS rv; 1446 1447 switch (event) { 1448 1449 case ACPI_EVENT_POWER_BUTTON: 1450 smpsw = &sc->sc_smpsw_power; 1451 1452 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1453 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1454 return; 1455 } 1456 1457 break; 1458 1459 case ACPI_EVENT_SLEEP_BUTTON: 1460 smpsw = &sc->sc_smpsw_sleep; 1461 1462 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1463 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1464 return; 1465 } 1466 1467 break; 1468 1469 default: 1470 rv = AE_TYPE; 1471 goto fail; 1472 } 1473 1474 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1475 1476 if (ACPI_SUCCESS(rv)) { 1477 sysmon_pswitch_unregister(smpsw); 1478 return; 1479 } 1480 1481 fail: 1482 aprint_error_dev(sc->sc_dev, "failed to deregister " 1483 "fixed event: %s\n", AcpiFormatException(rv)); 1484 } 1485 1486 static uint32_t 1487 acpi_fixed_button_handler(void *context) 1488 { 1489 static const int handler = OSL_NOTIFY_HANDLER; 1490 struct sysmon_pswitch *smpsw = context; 1491 1492 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1493 1494 return ACPI_INTERRUPT_HANDLED; 1495 } 1496 1497 static void 1498 acpi_fixed_button_pressed(void *context) 1499 { 1500 struct sysmon_pswitch *smpsw = context; 1501 1502 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1503 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1504 "power" : "sleep")); 1505 1506 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1507 } 1508 1509 /* 1510 * Sleep. 1511 */ 1512 static void 1513 acpi_sleep_init(struct acpi_softc *sc) 1514 { 1515 uint8_t a, b, i; 1516 ACPI_STATUS rv; 1517 1518 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1519 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1520 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1521 1522 /* 1523 * Evaluate supported sleep states. 1524 */ 1525 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1526 1527 rv = AcpiGetSleepTypeData(i, &a, &b); 1528 1529 if (ACPI_SUCCESS(rv)) 1530 sc->sc_sleepstates |= __BIT(i); 1531 } 1532 } 1533 1534 /* 1535 * Must be called with interrupts enabled. 1536 */ 1537 void 1538 acpi_enter_sleep_state(int state) 1539 { 1540 struct acpi_softc *sc = acpi_softc; 1541 ACPI_STATUS rv; 1542 1543 if (acpi_softc == NULL) 1544 return; 1545 1546 if (state == sc->sc_sleepstate) 1547 return; 1548 1549 if (state < ACPI_STATE_S0 || state > ACPI_STATE_S5) 1550 return; 1551 1552 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1553 1554 switch (state) { 1555 1556 case ACPI_STATE_S0: 1557 sc->sc_sleepstate = ACPI_STATE_S0; 1558 return; 1559 1560 case ACPI_STATE_S1: 1561 case ACPI_STATE_S2: 1562 case ACPI_STATE_S3: 1563 case ACPI_STATE_S4: 1564 1565 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1566 aprint_error_dev(sc->sc_dev, "sleep state " 1567 "S%d is not available\n", state); 1568 return; 1569 } 1570 1571 /* 1572 * Evaluate the _TTS method. This should be done before 1573 * pmf_system_suspend(9) and the evaluation of _PTS. 1574 * We should also re-evaluate this once we return to 1575 * S0 or if we abort the sleep state transition in the 1576 * middle (see ACPI 3.0, section 7.3.6). In reality, 1577 * however, the _TTS method is seldom seen in the field. 1578 */ 1579 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1580 1581 if (ACPI_SUCCESS(rv)) 1582 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1583 1584 if (state != ACPI_STATE_S1 && 1585 pmf_system_suspend(PMF_Q_NONE) != true) { 1586 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1587 break; 1588 } 1589 1590 /* 1591 * This will evaluate the _PTS and _SST methods, 1592 * but unlike the documentation claims, not _GTS, 1593 * which is evaluated in AcpiEnterSleepState(). 1594 * This must be called with interrupts enabled. 1595 */ 1596 rv = AcpiEnterSleepStatePrep(state); 1597 1598 if (ACPI_FAILURE(rv)) { 1599 aprint_error_dev(sc->sc_dev, "failed to prepare " 1600 "S%d: %s\n", state, AcpiFormatException(rv)); 1601 break; 1602 } 1603 1604 /* 1605 * After the _PTS method has been evaluated, we can 1606 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1607 */ 1608 acpi_wakedev_commit(sc, state); 1609 1610 sc->sc_sleepstate = state; 1611 1612 if (state == ACPI_STATE_S1) { 1613 1614 /* 1615 * Before the transition to S1, CPU caches 1616 * must be flushed (see ACPI 4.0, 7.3.4.2). 1617 * 1618 * Note that interrupts must be off before 1619 * calling AcpiEnterSleepState(). Conversely, 1620 * AcpiLeaveSleepState() should always be 1621 * called with interrupts enabled. 1622 */ 1623 acpi_md_OsDisableInterrupt(); 1624 1625 ACPI_FLUSH_CPU_CACHE(); 1626 rv = AcpiEnterSleepState(state); 1627 1628 if (ACPI_FAILURE(rv)) 1629 aprint_error_dev(sc->sc_dev, "failed to " 1630 "enter S1: %s\n", AcpiFormatException(rv)); 1631 1632 /* 1633 * Clear fixed events and disable all GPEs before 1634 * interrupts are enabled. 1635 */ 1636 AcpiClearEvent(ACPI_EVENT_PMTIMER); 1637 AcpiClearEvent(ACPI_EVENT_GLOBAL); 1638 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON); 1639 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON); 1640 AcpiClearEvent(ACPI_EVENT_RTC); 1641 #if (!ACPI_REDUCED_HARDWARE) 1642 AcpiHwDisableAllGpes(); 1643 #endif 1644 1645 acpi_md_OsEnableInterrupt(); 1646 rv = AcpiLeaveSleepState(state); 1647 1648 } else { 1649 1650 (void)acpi_md_sleep(state); 1651 1652 if (state == ACPI_STATE_S4) 1653 AcpiEnable(); 1654 1655 (void)pmf_system_bus_resume(PMF_Q_NONE); 1656 (void)AcpiLeaveSleepState(state); 1657 #if (!ACPI_REDUCED_HARDWARE) 1658 (void)AcpiSetFirmwareWakingVector(0, 0); 1659 #endif 1660 (void)pmf_system_resume(PMF_Q_NONE); 1661 } 1662 1663 /* 1664 * No wake GPEs should be enabled at runtime. 1665 */ 1666 acpi_wakedev_commit(sc, ACPI_STATE_S0); 1667 break; 1668 1669 case ACPI_STATE_S5: 1670 1671 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1672 1673 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1674 1675 if (ACPI_FAILURE(rv)) { 1676 aprint_error_dev(sc->sc_dev, "failed to prepare " 1677 "S%d: %s\n", state, AcpiFormatException(rv)); 1678 break; 1679 } 1680 1681 (void)AcpiDisableAllGpes(); 1682 1683 DELAY(1000000); 1684 1685 sc->sc_sleepstate = state; 1686 acpi_md_OsDisableInterrupt(); 1687 1688 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1689 1690 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1691 1692 break; 1693 } 1694 1695 sc->sc_sleepstate = ACPI_STATE_S0; 1696 1697 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1698 } 1699 1700 /* 1701 * Sysctl. 1702 */ 1703 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1704 { 1705 const struct sysctlnode *rnode, *snode; 1706 int err; 1707 1708 err = sysctl_createv(clog, 0, NULL, &rnode, 1709 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1710 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1711 NULL, 0, NULL, 0, 1712 CTL_HW, CTL_CREATE, CTL_EOL); 1713 1714 if (err != 0) 1715 return; 1716 1717 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1718 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1719 "root", SYSCTL_DESCR("ACPI root pointer"), 1720 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1721 CTL_CREATE, CTL_EOL); 1722 1723 err = sysctl_createv(clog, 0, &rnode, &snode, 1724 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1725 "sleep", SYSCTL_DESCR("ACPI sleep"), 1726 NULL, 0, NULL, 0, 1727 CTL_CREATE, CTL_EOL); 1728 1729 if (err != 0) 1730 return; 1731 1732 (void)sysctl_createv(NULL, 0, &snode, NULL, 1733 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1734 "state", SYSCTL_DESCR("System sleep state"), 1735 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1736 CTL_CREATE, CTL_EOL); 1737 1738 (void)sysctl_createv(NULL, 0, &snode, NULL, 1739 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1740 "states", SYSCTL_DESCR("Supported sleep states"), 1741 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1742 CTL_CREATE, CTL_EOL); 1743 1744 err = sysctl_createv(clog, 0, &rnode, &rnode, 1745 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1746 "stat", SYSCTL_DESCR("ACPI statistics"), 1747 NULL, 0, NULL, 0, 1748 CTL_CREATE, CTL_EOL); 1749 1750 if (err != 0) 1751 return; 1752 1753 (void)sysctl_createv(clog, 0, &rnode, NULL, 1754 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1755 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1756 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1757 CTL_CREATE, CTL_EOL); 1758 1759 (void)sysctl_createv(clog, 0, &rnode, NULL, 1760 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1761 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1762 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1763 CTL_CREATE, CTL_EOL); 1764 1765 (void)sysctl_createv(clog, 0, &rnode, NULL, 1766 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1767 "fixed", SYSCTL_DESCR("Number of fixed events"), 1768 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1769 CTL_CREATE, CTL_EOL); 1770 1771 (void)sysctl_createv(clog, 0, &rnode, NULL, 1772 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1773 "method", SYSCTL_DESCR("Number of methods executed"), 1774 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1775 CTL_CREATE, CTL_EOL); 1776 1777 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1778 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1779 } 1780 1781 static int 1782 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1783 { 1784 struct sysctlnode node; 1785 uint64_t t; 1786 int err, i; 1787 1788 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1789 t += AcpiFixedEventCount[i]; 1790 1791 node = *rnode; 1792 node.sysctl_data = &t; 1793 1794 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1795 1796 if (err || newp == NULL) 1797 return err; 1798 1799 return 0; 1800 } 1801 1802 static int 1803 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1804 { 1805 struct acpi_softc *sc = acpi_softc; 1806 struct sysctlnode node; 1807 int err, t; 1808 1809 if (acpi_softc == NULL) 1810 return ENOSYS; 1811 1812 node = *rnode; 1813 t = sc->sc_sleepstate; 1814 node.sysctl_data = &t; 1815 1816 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1817 1818 if (err || newp == NULL) 1819 return err; 1820 1821 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1822 return EINVAL; 1823 1824 acpi_enter_sleep_state(t); 1825 1826 return 0; 1827 } 1828 1829 static int 1830 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1831 { 1832 struct acpi_softc *sc = acpi_softc; 1833 struct sysctlnode node; 1834 char t[3 * 6 + 1]; 1835 int err; 1836 1837 if (acpi_softc == NULL) 1838 return ENOSYS; 1839 1840 (void)memset(t, '\0', sizeof(t)); 1841 1842 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1843 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1844 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1845 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1846 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1847 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1848 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1849 1850 node = *rnode; 1851 node.sysctl_data = &t; 1852 1853 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1854 1855 if (err || newp == NULL) 1856 return err; 1857 1858 return 0; 1859 } 1860 1861 /* 1862 * Tables. 1863 */ 1864 ACPI_PHYSICAL_ADDRESS 1865 acpi_OsGetRootPointer(void) 1866 { 1867 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1868 1869 /* 1870 * We let MD code handle this since there are multiple ways to do it: 1871 * 1872 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1873 * 1874 * IA-64: Use the EFI. 1875 */ 1876 PhysicalAddress = acpi_md_OsGetRootPointer(); 1877 1878 if (acpi_root_pointer == 0) 1879 acpi_root_pointer = PhysicalAddress; 1880 1881 return PhysicalAddress; 1882 } 1883 1884 static ACPI_TABLE_HEADER * 1885 acpi_map_rsdt(void) 1886 { 1887 ACPI_PHYSICAL_ADDRESS paddr; 1888 ACPI_TABLE_RSDP *rsdp; 1889 1890 paddr = AcpiOsGetRootPointer(); 1891 1892 if (paddr == 0) 1893 return NULL; 1894 1895 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1896 1897 if (rsdp == NULL) 1898 return NULL; 1899 1900 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1901 paddr = rsdp->XsdtPhysicalAddress; 1902 else 1903 paddr = rsdp->RsdtPhysicalAddress; 1904 1905 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1906 1907 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1908 } 1909 1910 /* 1911 * XXX: Refactor to be a generic function that unmaps tables. 1912 */ 1913 static void 1914 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1915 { 1916 1917 if (rsdt == NULL) 1918 return; 1919 1920 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1921 } 1922 1923 /* 1924 * XXX: Refactor to be a generic function that maps tables. 1925 */ 1926 ACPI_STATUS 1927 acpi_madt_map(void) 1928 { 1929 ACPI_STATUS rv; 1930 1931 if (madt_header != NULL) 1932 return AE_ALREADY_EXISTS; 1933 1934 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); 1935 1936 if (ACPI_FAILURE(rv)) 1937 return rv; 1938 1939 return AE_OK; 1940 } 1941 1942 void 1943 acpi_madt_unmap(void) 1944 { 1945 madt_header = NULL; 1946 } 1947 1948 ACPI_STATUS 1949 acpi_gtdt_map(void) 1950 { 1951 ACPI_STATUS rv; 1952 1953 if (gtdt_header != NULL) 1954 return AE_ALREADY_EXISTS; 1955 1956 rv = AcpiGetTable(ACPI_SIG_GTDT, 1, >dt_header); 1957 1958 if (ACPI_FAILURE(rv)) 1959 return rv; 1960 1961 return AE_OK; 1962 } 1963 1964 void 1965 acpi_gtdt_unmap(void) 1966 { 1967 gtdt_header = NULL; 1968 } 1969 1970 /* 1971 * XXX: Refactor to be a generic function that walks tables. 1972 */ 1973 void 1974 acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) 1975 { 1976 ACPI_SUBTABLE_HEADER *hdrp; 1977 char *madtend, *where; 1978 1979 madtend = (char *)madt_header + madt_header->Length; 1980 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); 1981 1982 while (where < madtend) { 1983 1984 hdrp = (ACPI_SUBTABLE_HEADER *)where; 1985 1986 if (hdrp->Length == 0 || ACPI_FAILURE(func(hdrp, aux))) 1987 break; 1988 1989 where += hdrp->Length; 1990 } 1991 } 1992 1993 void 1994 acpi_gtdt_walk(ACPI_STATUS (*func)(ACPI_GTDT_HEADER *, void *), void *aux) 1995 { 1996 ACPI_GTDT_HEADER *hdrp; 1997 char *gtdtend, *where; 1998 1999 gtdtend = (char *)gtdt_header + gtdt_header->Length; 2000 where = (char *)gtdt_header + sizeof (ACPI_TABLE_GTDT); 2001 2002 while (where < gtdtend) { 2003 2004 hdrp = (ACPI_GTDT_HEADER *)where; 2005 2006 if (hdrp->Length == 0 || ACPI_FAILURE(func(hdrp, aux))) 2007 break; 2008 2009 where += hdrp->Length; 2010 } 2011 } 2012 2013 /* 2014 * Miscellaneous. 2015 */ 2016 static bool 2017 acpi_is_scope(struct acpi_devnode *ad) 2018 { 2019 int i; 2020 2021 /* 2022 * Return true if the node is a root scope. 2023 */ 2024 if (ad->ad_parent == NULL) 2025 return false; 2026 2027 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 2028 return false; 2029 2030 for (i = 0; i < __arraycount(acpi_scopes); i++) { 2031 2032 if (acpi_scopes[i] == NULL) 2033 continue; 2034 2035 if (ad->ad_handle == acpi_scopes[i]) 2036 return true; 2037 } 2038 2039 return false; 2040 } 2041 2042 bool 2043 acpi_device_present(ACPI_HANDLE handle) 2044 { 2045 ACPI_STATUS rv; 2046 ACPI_INTEGER sta; 2047 2048 rv = acpi_eval_integer(handle, "_STA", &sta); 2049 2050 if (ACPI_FAILURE(rv)) { 2051 /* No _STA method -> must be there */ 2052 return rv == AE_NOT_FOUND; 2053 } 2054 2055 return (sta & ACPI_STA_OK) == ACPI_STA_OK; 2056 } 2057 2058 /* 2059 * ACPIVERBOSE. 2060 */ 2061 void 2062 acpi_load_verbose(void) 2063 { 2064 2065 if (acpi_verbose_loaded == 0) 2066 module_autoload("acpiverbose", MODULE_CLASS_MISC); 2067 } 2068 2069 void 2070 acpi_print_verbose_stub(struct acpi_softc *sc) 2071 { 2072 2073 acpi_load_verbose(); 2074 2075 if (acpi_verbose_loaded != 0) 2076 acpi_print_verbose(sc); 2077 } 2078 2079 void 2080 acpi_print_dev_stub(const char *pnpstr) 2081 { 2082 2083 acpi_load_verbose(); 2084 2085 if (acpi_verbose_loaded != 0) 2086 acpi_print_dev(pnpstr); 2087 } 2088 2089 MALLOC_DECLARE(M_ACPI); /* XXX: ACPI_ACTIVATE_DEV should use kmem(9). */ 2090 2091 /* 2092 * ACPI_ACTIVATE_DEV. 2093 */ 2094 static void 2095 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 2096 { 2097 2098 #ifndef ACPI_ACTIVATE_DEV 2099 return; 2100 } 2101 #else 2102 static const int valid = ACPI_VALID_HID; 2103 ACPI_DEVICE_INFO *newdi; 2104 ACPI_STATUS rv; 2105 2106 2107 /* 2108 * If the device is valid and present, 2109 * but not enabled, try to activate it. 2110 */ 2111 if (((*di)->Valid & valid) != valid) 2112 return; 2113 2114 if (!acpi_device_present(handle)) 2115 return; 2116 2117 rv = acpi_allocate_resources(handle); 2118 2119 if (ACPI_FAILURE(rv)) 2120 goto fail; 2121 2122 rv = AcpiGetObjectInfo(handle, &newdi); 2123 2124 if (ACPI_FAILURE(rv)) 2125 goto fail; 2126 2127 ACPI_FREE(*di); 2128 *di = newdi; 2129 2130 aprint_verbose_dev(acpi_softc->sc_dev, 2131 "%s activated\n", (*di)->HardwareId.String); 2132 2133 return; 2134 2135 fail: 2136 aprint_error_dev(acpi_softc->sc_dev, "failed to " 2137 "activate %s\n", (*di)->HardwareId.String); 2138 } 2139 2140 /* 2141 * XXX: This very incomplete. 2142 */ 2143 ACPI_STATUS 2144 acpi_allocate_resources(ACPI_HANDLE handle) 2145 { 2146 ACPI_BUFFER bufp, bufc, bufn; 2147 ACPI_RESOURCE *resp, *resc, *resn; 2148 ACPI_RESOURCE_IRQ *irq; 2149 #if 0 2150 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 2151 #endif 2152 ACPI_STATUS rv; 2153 uint delta; 2154 2155 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 2156 if (ACPI_FAILURE(rv)) 2157 goto out; 2158 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 2159 if (ACPI_FAILURE(rv)) { 2160 goto out1; 2161 } 2162 2163 bufn.Length = 1000; 2164 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 2165 resp = bufp.Pointer; 2166 resc = bufc.Pointer; 2167 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 2168 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 2169 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 2170 resp = ACPI_NEXT_RESOURCE(resp); 2171 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 2172 break; 2173 /* Found identical Id */ 2174 resn->Type = resc->Type; 2175 switch (resc->Type) { 2176 case ACPI_RESOURCE_TYPE_IRQ: 2177 memcpy(&resn->Data, &resp->Data, 2178 sizeof(ACPI_RESOURCE_IRQ)); 2179 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 2180 irq->Interrupts[0] = 2181 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 2182 Interrupts[irq->InterruptCount-1]; 2183 irq->InterruptCount = 1; 2184 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 2185 break; 2186 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 2187 memcpy(&resn->Data, &resp->Data, 2188 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 2189 #if 0 2190 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 2191 /* 2192 * XXX: Not duplicating the interrupt logic above 2193 * because its not clear what it accomplishes. 2194 */ 2195 xirq->Interrupts[0] = 2196 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 2197 Interrupts[irq->NumberOfInterrupts-1]; 2198 xirq->NumberOfInterrupts = 1; 2199 #endif 2200 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 2201 break; 2202 case ACPI_RESOURCE_TYPE_IO: 2203 memcpy(&resn->Data, &resp->Data, 2204 sizeof(ACPI_RESOURCE_IO)); 2205 resn->Length = resp->Length; 2206 break; 2207 default: 2208 aprint_error_dev(acpi_softc->sc_dev, 2209 "%s: invalid type %u\n", __func__, resc->Type); 2210 rv = AE_BAD_DATA; 2211 goto out2; 2212 } 2213 resc = ACPI_NEXT_RESOURCE(resc); 2214 resn = ACPI_NEXT_RESOURCE(resn); 2215 resp = ACPI_NEXT_RESOURCE(resp); 2216 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 2217 if (delta >= 2218 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 2219 bufn.Length *= 2; 2220 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 2221 M_ACPI, M_WAITOK); 2222 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 2223 delta); 2224 } 2225 } 2226 2227 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 2228 aprint_error_dev(acpi_softc->sc_dev, 2229 "%s: resc not exhausted\n", __func__); 2230 rv = AE_BAD_DATA; 2231 goto out3; 2232 } 2233 2234 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 2235 rv = AcpiSetCurrentResources(handle, &bufn); 2236 2237 if (ACPI_FAILURE(rv)) 2238 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 2239 "resources: %s\n", __func__, AcpiFormatException(rv)); 2240 2241 out3: 2242 free(bufn.Pointer, M_ACPI); 2243 out2: 2244 ACPI_FREE(bufc.Pointer); 2245 out1: 2246 ACPI_FREE(bufp.Pointer); 2247 out: 2248 return rv; 2249 } 2250 2251 #endif /* ACPI_ACTIVATE_DEV */ 2252
Indexes created Sat Feb 21 08:20:20 UTC 2026