1 /* $NetBSD: acpi.c,v 1.299 2024/03/20 03:14:45 riastradh 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 1.299 2024/03/20 03:14:45 riastradh 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_config_tree(struct acpi_softc *); 205 static void acpi_config_dma(struct acpi_softc *); 206 static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, 207 void *, void **); 208 static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t, 209 void *, void **); 210 static void acpi_make_name(struct acpi_devnode *, uint32_t); 211 212 static int acpi_rescan(device_t, const char *, const int *); 213 static void acpi_rescan_early(struct acpi_softc *); 214 static void acpi_rescan_nodes(struct acpi_softc *); 215 static void acpi_rescan_capabilities(device_t); 216 static int acpi_print(void *aux, const char *); 217 218 static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); 219 220 static void acpi_register_fixed_button(struct acpi_softc *, int); 221 static void acpi_deregister_fixed_button(struct acpi_softc *, int); 222 static uint32_t acpi_fixed_button_handler(void *); 223 static void acpi_fixed_button_pressed(void *); 224 225 static void acpi_sleep_init(struct acpi_softc *); 226 227 static int sysctl_hw_acpi_fixedstats(SYSCTLFN_PROTO); 228 static int sysctl_hw_acpi_sleepstate(SYSCTLFN_PROTO); 229 static int sysctl_hw_acpi_sleepstates(SYSCTLFN_PROTO); 230 231 static bool acpi_is_scope(struct acpi_devnode *); 232 static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 233 static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 234 235 void acpi_print_verbose_stub(struct acpi_softc *); 236 void acpi_print_dev_stub(const char *); 237 238 static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **); 239 ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE); 240 241 void (*acpi_print_verbose)(struct acpi_softc *) = acpi_print_verbose_stub; 242 void (*acpi_print_dev)(const char *) = acpi_print_dev_stub; 243 244 bus_dma_tag_t acpi_default_dma_tag(struct acpi_softc *, struct acpi_devnode *); 245 bus_dma_tag_t acpi_default_dma64_tag(struct acpi_softc *, struct acpi_devnode *); 246 pci_chipset_tag_t acpi_default_pci_chipset_tag(struct acpi_softc *, int, int); 247 248 CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 249 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 250 251 /* 252 * Probe for ACPI support. 253 * 254 * This is called by the machine-dependent ACPI front-end. 255 * Note: this is not an autoconfiguration interface function. 256 */ 257 int 258 acpi_probe(void) 259 { 260 ACPI_TABLE_HEADER *rsdt; 261 ACPI_STATUS rv; 262 int quirks; 263 264 if (acpi_softc != NULL) 265 panic("%s: already probed", __func__); 266 267 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 268 269 /* 270 * Start up ACPICA. 271 */ 272 AcpiGbl_EnableInterpreterSlack = true; 273 274 rv = AcpiInitializeSubsystem(); 275 276 if (ACPI_FAILURE(rv)) { 277 aprint_error("%s: failed to initialize subsystem\n", __func__); 278 return 0; 279 } 280 281 /* 282 * Allocate space for RSDT/XSDT and DSDT, 283 * but allow resizing if more tables exist. 284 */ 285 rv = AcpiInitializeTables(NULL, 2, true); 286 287 if (ACPI_FAILURE(rv)) { 288 aprint_error("%s: failed to initialize tables\n", __func__); 289 goto fail; 290 } 291 292 rv = AcpiLoadTables(); 293 294 if (ACPI_FAILURE(rv)) { 295 aprint_error("%s: failed to load tables\n", __func__); 296 goto fail; 297 } 298 299 rsdt = acpi_map_rsdt(); 300 301 if (rsdt == NULL) { 302 aprint_error("%s: failed to map RSDT\n", __func__); 303 goto fail; 304 } 305 306 quirks = acpi_find_quirks(); 307 308 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_BROKEN) != 0) { 309 310 aprint_normal("ACPI: BIOS is listed as broken:\n"); 311 aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 312 "AslId <%4.4s,%08x>\n", rsdt->OemId, rsdt->OemTableId, 313 rsdt->OemRevision, rsdt->AslCompilerId, 314 rsdt->AslCompilerRevision); 315 aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n"); 316 317 acpi_unmap_rsdt(rsdt); 318 goto fail; 319 } 320 321 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_OLDBIOS) != 0) { 322 323 aprint_normal("ACPI: BIOS is too old (%s). " 324 "Set acpi_force_load to use.\n", 325 pmf_get_platform("bios-date")); 326 327 acpi_unmap_rsdt(rsdt); 328 goto fail; 329 } 330 331 acpi_unmap_rsdt(rsdt); 332 333 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 334 335 if (ACPI_FAILURE(rv)) { 336 aprint_error("%s: failed to enable subsystem\n", __func__); 337 goto fail; 338 } 339 340 return 1; 341 342 fail: 343 (void)AcpiTerminate(); 344 345 return 0; 346 } 347 348 void 349 acpi_disable(void) 350 { 351 352 if (acpi_softc == NULL) 353 return; 354 355 KASSERT(acpi_active != 0); 356 357 if (AcpiGbl_FADT.SmiCommand != 0) 358 AcpiDisable(); 359 } 360 361 int 362 acpi_check(device_t parent, const char *ifattr) 363 { 364 return config_search(parent, NULL, 365 CFARGS(.submatch = acpi_submatch, 366 .iattr = ifattr)) != NULL; 367 } 368 369 int 370 acpi_reset(void) 371 { 372 struct acpi_softc *sc = acpi_softc; 373 ACPI_GENERIC_ADDRESS *ResetReg; 374 ACPI_PCI_ID PciId; 375 ACPI_STATUS status; 376 377 if (sc == NULL) 378 return ENXIO; 379 380 ResetReg = &AcpiGbl_FADT.ResetRegister; 381 382 /* Check if the reset register is supported */ 383 if (!(AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) || 384 !ResetReg->Address) { 385 return ENOENT; 386 } 387 388 switch (ResetReg->SpaceId) { 389 case ACPI_ADR_SPACE_PCI_CONFIG: 390 PciId.Segment = PciId.Bus = 0; 391 PciId.Device = ACPI_GAS_PCI_DEV(ResetReg->Address); 392 PciId.Function = ACPI_GAS_PCI_FUNC(ResetReg->Address); 393 status = AcpiOsWritePciConfiguration(&PciId, 394 ACPI_GAS_PCI_REGOFF(ResetReg->Address), 395 AcpiGbl_FADT.ResetValue, ResetReg->BitWidth); 396 break; 397 case ACPI_ADR_SPACE_SYSTEM_IO: 398 case ACPI_ADR_SPACE_SYSTEM_MEMORY: 399 status = AcpiReset(); 400 break; 401 default: 402 status = AE_TYPE; 403 break; 404 } 405 406 return ACPI_FAILURE(status) ? EIO : 0; 407 } 408 409 /* 410 * Autoconfiguration. 411 */ 412 static int 413 acpi_match(device_t parent, cfdata_t match, void *aux) 414 { 415 /* 416 * XXX: Nada; MD code has called acpi_probe(). 417 */ 418 return 1; 419 } 420 421 static int 422 acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 423 { 424 struct cfattach *ca; 425 426 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 427 428 return (ca == &acpi_ca); 429 } 430 431 static void 432 acpi_attach(device_t parent, device_t self, void *aux) 433 { 434 struct acpi_softc *sc = device_private(self); 435 struct acpibus_attach_args *aa = aux; 436 ACPI_TABLE_HEADER *rsdt, *hdr; 437 ACPI_STATUS rv; 438 int i; 439 440 aprint_naive("\n"); 441 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 442 443 if (acpi_softc != NULL) 444 panic("%s: already attached", __func__); 445 446 rsdt = acpi_map_rsdt(); 447 448 if (rsdt == NULL) 449 aprint_error_dev(self, "X/RSDT: Not found\n"); 450 else { 451 aprint_verbose_dev(self, 452 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 453 rsdt->OemId, rsdt->OemTableId, 454 rsdt->OemRevision, 455 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 456 } 457 458 acpi_unmap_rsdt(rsdt); 459 460 sc->sc_dev = self; 461 sc->sc_root = NULL; 462 463 sc->sc_sleepstate = ACPI_STATE_S0; 464 sc->sc_quirks = acpi_find_quirks(); 465 466 sysmon_power_settype("acpi"); 467 468 sc->sc_iot = aa->aa_iot; 469 sc->sc_memt = aa->aa_memt; 470 sc->sc_pciflags = aa->aa_pciflags; 471 sc->sc_ic = aa->aa_ic; 472 sc->sc_dmat = aa->aa_dmat; 473 sc->sc_dmat64 = aa->aa_dmat64; 474 475 SIMPLEQ_INIT(&sc->sc_head); 476 477 acpi_softc = sc; 478 479 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) 480 aprint_error_dev(self, "couldn't establish power handler\n"); 481 482 /* 483 * Bring ACPICA on-line. 484 */ 485 486 rv = AcpiEnableSubsystem(ACPI_FULL_INITIALIZATION); 487 488 if (ACPI_FAILURE(rv)) 489 goto fail; 490 491 /* 492 * Early initialization of acpiec(4) via ECDT. 493 */ 494 config_found(self, aa, NULL, 495 CFARGS(.iattr = "acpiecdtbus")); 496 497 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 498 499 if (ACPI_FAILURE(rv)) 500 goto fail; 501 502 /* 503 * Scan the namespace and build our device tree. 504 */ 505 acpi_build_tree(sc); 506 507 #if NPCI > 0 508 /* 509 * Probe MCFG table 510 */ 511 acpimcfg_probe(sc); 512 #endif 513 514 acpi_md_callback(sc); 515 516 /* 517 * Early initialization of the _PDC control method 518 * that may load additional SSDT tables dynamically. 519 */ 520 (void)acpi_md_pdc(); 521 522 /* 523 * Install global notify handlers. 524 */ 525 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 526 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 527 528 if (ACPI_FAILURE(rv)) 529 goto fail; 530 531 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 532 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 533 534 if (ACPI_FAILURE(rv)) 535 goto fail; 536 537 acpi_active = 1; 538 539 if (!AcpiGbl_ReducedHardware) { 540 /* Show SCI interrupt. */ 541 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 542 AcpiGbl_FADT.SciInterrupt); 543 544 /* 545 * Install fixed-event handlers. 546 */ 547 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 548 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 549 } 550 551 /* 552 * Load drivers that operate on System Description Tables. 553 */ 554 for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i) { 555 rv = AcpiGetTableByIndex(i, &hdr); 556 if (ACPI_FAILURE(rv)) { 557 continue; 558 } 559 config_found(sc->sc_dev, hdr, NULL, 560 CFARGS(.iattr = "acpisdtbus")); 561 AcpiPutTable(hdr); 562 } 563 564 acpitimer_init(sc); 565 acpi_config_tree(sc); 566 acpi_sleep_init(sc); 567 568 #ifdef ACPI_DEBUG 569 acpi_debug_init(); 570 #endif 571 572 /* 573 * Print debug information. 574 */ 575 acpi_print_verbose(sc); 576 577 return; 578 579 fail: 580 aprint_error("%s: failed to initialize ACPI: %s\n", 581 __func__, AcpiFormatException(rv)); 582 } 583 584 /* 585 * XXX: This is incomplete. 586 */ 587 static int 588 acpi_detach(device_t self, int flags) 589 { 590 struct acpi_softc *sc = device_private(self); 591 ACPI_STATUS rv; 592 int rc; 593 594 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 595 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 596 597 if (ACPI_FAILURE(rv)) 598 return EBUSY; 599 600 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 601 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 602 603 if (ACPI_FAILURE(rv)) 604 return EBUSY; 605 606 if ((rc = config_detach_children(self, flags)) != 0) 607 return rc; 608 609 if ((rc = acpitimer_detach()) != 0) 610 return rc; 611 612 if (!AcpiGbl_ReducedHardware) { 613 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 614 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 615 } 616 617 pmf_device_deregister(self); 618 619 acpi_softc = NULL; 620 621 return 0; 622 } 623 624 static void 625 acpi_childdet(device_t self, device_t child) 626 { 627 struct acpi_softc *sc = device_private(self); 628 struct acpi_devnode *ad; 629 630 if (sc->sc_apmbus == child) 631 sc->sc_apmbus = NULL; 632 633 if (sc->sc_hpet == child) 634 sc->sc_hpet = NULL; 635 636 if (sc->sc_wdrt == child) 637 sc->sc_wdrt = NULL; 638 639 if (sc->sc_apei == child) 640 sc->sc_apei = NULL; 641 642 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) { 643 644 if (ad->ad_device == child) 645 ad->ad_device = NULL; 646 } 647 } 648 649 static bool 650 acpi_suspend(device_t dv, const pmf_qual_t *qual) 651 { 652 653 acpi_suspended = 1; 654 655 return true; 656 } 657 658 static bool 659 acpi_resume(device_t dv, const pmf_qual_t *qual) 660 { 661 662 acpi_suspended = 0; 663 664 return true; 665 } 666 667 /* 668 * Namespace scan. 669 */ 670 static void 671 acpi_build_tree(struct acpi_softc *sc) 672 { 673 struct acpi_walkcontext awc; 674 675 /* 676 * Get the root scope handles. 677 */ 678 KASSERT(__arraycount(acpi_scopes) == 4); 679 680 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 681 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 682 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 683 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 684 685 /* 686 * Make the root node. 687 */ 688 awc.aw_sc = sc; 689 awc.aw_parent = NULL; 690 691 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 692 693 KASSERT(sc->sc_root == NULL); 694 KASSERT(awc.aw_parent != NULL); 695 696 sc->sc_root = awc.aw_parent; 697 698 /* 699 * Build the internal namespace. 700 */ 701 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 702 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 703 704 #if NPCI > 0 705 /* 706 * Scan the internal namespace. 707 */ 708 (void)acpi_pcidev_scan(sc->sc_root); 709 #endif 710 } 711 712 static void 713 acpi_config_tree(struct acpi_softc *sc) 714 { 715 /* 716 * Assign bus_dma resources 717 */ 718 acpi_config_dma(sc); 719 720 /* 721 * Configure all everything found "at acpi?". 722 */ 723 (void)acpi_rescan(sc->sc_dev, NULL, NULL); 724 725 /* 726 * Update GPE information. 727 * 728 * Note that this must be called after 729 * all GPE handlers have been installed. 730 */ 731 (void)AcpiUpdateAllGpes(); 732 733 /* 734 * Defer rest of the configuration. 735 */ 736 (void)config_defer(sc->sc_dev, acpi_rescan_capabilities); 737 } 738 739 // XXXNH? 740 static void 741 acpi_config_dma(struct acpi_softc *sc) 742 { 743 struct acpi_devnode *ad; 744 745 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) { 746 747 if (ad->ad_device != NULL) 748 continue; 749 750 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 751 continue; 752 753 ad->ad_dmat = acpi_get_dma_tag(sc, ad); 754 ad->ad_dmat64 = acpi_get_dma64_tag(sc, ad); 755 } 756 } 757 758 static ACPI_STATUS 759 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 760 void *context, void **status) 761 { 762 struct acpi_walkcontext *awc = context; 763 struct acpi_softc *sc = awc->aw_sc; 764 struct acpi_devnode *ad; 765 ACPI_DEVICE_INFO *devinfo; 766 ACPI_OBJECT_TYPE type; 767 ACPI_STATUS rv; 768 769 rv = AcpiGetObjectInfo(handle, &devinfo); 770 771 if (ACPI_FAILURE(rv)) 772 return AE_OK; /* Do not terminate the walk. */ 773 774 type = devinfo->Type; 775 776 switch (type) { 777 778 case ACPI_TYPE_DEVICE: 779 acpi_activate_device(handle, &devinfo); 780 /* FALLTHROUGH */ 781 782 case ACPI_TYPE_PROCESSOR: 783 case ACPI_TYPE_THERMAL: 784 case ACPI_TYPE_POWER: 785 786 ad = kmem_zalloc(sizeof(*ad), KM_SLEEP); 787 788 ad->ad_device = NULL; 789 ad->ad_notify = NULL; 790 ad->ad_pciinfo = NULL; 791 ad->ad_wakedev = NULL; 792 793 ad->ad_type = type; 794 ad->ad_handle = handle; 795 ad->ad_devinfo = devinfo; 796 797 ad->ad_root = sc->sc_dev; 798 ad->ad_parent = awc->aw_parent; 799 800 acpi_match_node_init(ad); 801 acpi_make_name(ad, devinfo->Name); 802 803 /* 804 * Identify wake GPEs from the _PRW. Note that 805 * AcpiUpdateAllGpes() must be called afterwards. 806 */ 807 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) 808 acpi_wakedev_init(ad); 809 810 SIMPLEQ_INIT(&ad->ad_child_head); 811 SIMPLEQ_INSERT_TAIL(&sc->sc_head, ad, ad_list); 812 813 if (ad->ad_parent != NULL) { 814 815 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 816 ad, ad_child_list); 817 } 818 819 awc->aw_parent = ad; 820 break; 821 822 default: 823 ACPI_FREE(devinfo); 824 break; 825 } 826 827 return AE_OK; 828 } 829 830 static ACPI_STATUS 831 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 832 void *context, void **status) 833 { 834 struct acpi_walkcontext *awc = context; 835 836 KASSERT(awc != NULL); 837 KASSERT(awc->aw_parent != NULL); 838 839 if (handle == awc->aw_parent->ad_handle) 840 awc->aw_parent = awc->aw_parent->ad_parent; 841 842 return AE_OK; 843 } 844 845 static void 846 acpi_make_name(struct acpi_devnode *ad, uint32_t name) 847 { 848 ACPI_NAME_UNION *anu; 849 int clear, i; 850 851 anu = (ACPI_NAME_UNION *)&name; 852 ad->ad_name[4] = '\0'; 853 854 for (i = 3, clear = 0; i >= 0; i--) { 855 856 if (clear == 0 && anu->Ascii[i] == '_') 857 ad->ad_name[i] = '\0'; 858 else { 859 ad->ad_name[i] = anu->Ascii[i]; 860 clear = 1; 861 } 862 } 863 864 if (ad->ad_name[0] == '\0') 865 ad->ad_name[0] = '_'; 866 } 867 868 bus_dma_tag_t 869 acpi_default_dma_tag(struct acpi_softc *sc, struct acpi_devnode *ad) 870 { 871 return sc->sc_dmat; 872 } 873 __weak_alias(acpi_get_dma_tag,acpi_default_dma_tag); 874 875 bus_dma_tag_t 876 acpi_default_dma64_tag(struct acpi_softc *sc, struct acpi_devnode *ad) 877 { 878 return sc->sc_dmat64; 879 } 880 __weak_alias(acpi_get_dma64_tag,acpi_default_dma64_tag); 881 882 pci_chipset_tag_t 883 acpi_default_pci_chipset_tag(struct acpi_softc *sc, int seg, int bbn) 884 { 885 return NULL; 886 } 887 __weak_alias(acpi_get_pci_chipset_tag,acpi_default_pci_chipset_tag); 888 889 /* 890 * Device attachment. 891 */ 892 static int 893 acpi_rescan(device_t self, const char *ifattr, const int *locators) 894 { 895 struct acpi_softc *sc = device_private(self); 896 struct acpi_attach_args aa; 897 898 /* 899 * Try to attach hpet(4) first via a specific table. 900 */ 901 aa.aa_memt = sc->sc_memt; 902 903 if (ifattr_match(ifattr, "acpihpetbus") && sc->sc_hpet == NULL) { 904 sc->sc_hpet = config_found(sc->sc_dev, &aa, NULL, 905 CFARGS(.iattr = "acpihpetbus")); 906 } 907 908 /* 909 * A two-pass scan for acpinodebus. 910 */ 911 if (ifattr_match(ifattr, "acpinodebus")) { 912 acpi_rescan_early(sc); 913 acpi_rescan_nodes(sc); 914 } 915 916 /* 917 * Attach APM emulation and acpiwdrt(4). 918 */ 919 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) { 920 sc->sc_apmbus = config_found(sc->sc_dev, NULL, NULL, 921 CFARGS(.iattr = "acpiapmbus")); 922 } 923 924 if (ifattr_match(ifattr, "acpiwdrtbus") && sc->sc_wdrt == NULL) { 925 sc->sc_wdrt = config_found(sc->sc_dev, NULL, NULL, 926 CFARGS(.iattr = "acpiwdrtbus")); 927 } 928 929 if (ifattr_match(ifattr, "apeibus") && sc->sc_apei == NULL) { 930 sc->sc_apei = config_found(sc->sc_dev, NULL, NULL, 931 CFARGS(.iattr = "apeibus")); 932 } 933 934 return 0; 935 } 936 937 static void 938 acpi_rescan_early(struct acpi_softc *sc) 939 { 940 struct acpi_attach_args aa; 941 struct acpi_devnode *ad; 942 943 /* 944 * First scan for devices such as acpiec(4) that 945 * should be always attached before anything else. 946 * We want these devices to attach regardless of 947 * the device status and other restrictions. 948 */ 949 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) { 950 951 if (ad->ad_device != NULL) 952 continue; 953 954 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 955 continue; 956 957 if (acpi_match_hid(ad->ad_devinfo, acpi_early_ids) == 0) 958 continue; 959 960 KASSERT(ad->ad_handle != NULL); 961 962 aa.aa_node = ad; 963 aa.aa_iot = sc->sc_iot; 964 aa.aa_memt = sc->sc_memt; 965 if (ad->ad_pciinfo != NULL) { 966 aa.aa_pc = ad->ad_pciinfo->ap_pc; 967 aa.aa_pciflags = sc->sc_pciflags; 968 } 969 aa.aa_ic = sc->sc_ic; 970 aa.aa_dmat = ad->ad_dmat; 971 aa.aa_dmat64 = ad->ad_dmat64; 972 973 ad->ad_device = config_found(sc->sc_dev, &aa, acpi_print, 974 CFARGS(.iattr = "acpinodebus", 975 .devhandle = devhandle_from_acpi(devhandle_invalid(), 976 ad->ad_handle))); 977 } 978 } 979 980 static void 981 acpi_rescan_nodes(struct acpi_softc *sc) 982 { 983 const char * const hpet_ids[] = { "PNP0103", NULL }; 984 struct acpi_attach_args aa; 985 struct acpi_devnode *ad; 986 ACPI_DEVICE_INFO *di; 987 988 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) { 989 990 if (ad->ad_device != NULL) 991 continue; 992 993 /* 994 * There is a bug in ACPICA: it defines the type 995 * of the scopes incorrectly for its own reasons. 996 */ 997 if (acpi_is_scope(ad) != false) 998 continue; 999 1000 di = ad->ad_devinfo; 1001 1002 /* 1003 * We only attach devices which are present, enabled, and 1004 * functioning properly. However, if a device is enabled, 1005 * it is decoding resources and we should claim these, 1006 * if possible. This requires changes to bus_space(9). 1007 */ 1008 if (di->Type == ACPI_TYPE_DEVICE && 1009 !acpi_device_present(ad->ad_handle)) { 1010 continue; 1011 } 1012 1013 if (di->Type == ACPI_TYPE_POWER) 1014 continue; 1015 1016 if (di->Type == ACPI_TYPE_PROCESSOR) 1017 continue; 1018 1019 if (acpi_match_hid(di, acpi_early_ids) != 0) 1020 continue; 1021 1022 if (acpi_match_hid(di, acpi_ignored_ids) != 0) 1023 continue; 1024 1025 if (acpi_match_hid(di, hpet_ids) != 0 && sc->sc_hpet != NULL) 1026 continue; 1027 1028 KASSERT(ad->ad_handle != NULL); 1029 1030 aa.aa_node = ad; 1031 aa.aa_iot = sc->sc_iot; 1032 aa.aa_memt = sc->sc_memt; 1033 if (ad->ad_pciinfo != NULL) { 1034 aa.aa_pc = ad->ad_pciinfo->ap_pc; 1035 aa.aa_pciflags = sc->sc_pciflags; 1036 } 1037 aa.aa_ic = sc->sc_ic; 1038 aa.aa_dmat = ad->ad_dmat; 1039 aa.aa_dmat64 = ad->ad_dmat64; 1040 1041 ad->ad_device = config_found(sc->sc_dev, &aa, acpi_print, 1042 CFARGS(.iattr = "acpinodebus", 1043 .devhandle = devhandle_from_acpi(devhandle_invalid(), 1044 ad->ad_handle))); 1045 } 1046 } 1047 1048 static void 1049 acpi_rescan_capabilities(device_t self) 1050 { 1051 struct acpi_softc *sc = device_private(self); 1052 struct acpi_devnode *ad; 1053 ACPI_HANDLE tmp; 1054 ACPI_STATUS rv; 1055 1056 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) { 1057 1058 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 1059 continue; 1060 1061 /* 1062 * Scan power resource capabilities. 1063 * 1064 * If any power states are supported, 1065 * at least _PR0 and _PR3 must be present. 1066 */ 1067 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 1068 1069 if (ACPI_SUCCESS(rv)) { 1070 ad->ad_flags |= ACPI_DEVICE_POWER; 1071 acpi_power_add(ad); 1072 } 1073 1074 /* 1075 * Scan wake-up capabilities. 1076 */ 1077 if (ad->ad_wakedev != NULL) { 1078 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 1079 acpi_wakedev_add(ad); 1080 } 1081 1082 /* 1083 * Scan docking stations. 1084 */ 1085 rv = AcpiGetHandle(ad->ad_handle, "_DCK", &tmp); 1086 1087 if (ACPI_SUCCESS(rv)) 1088 ad->ad_flags |= ACPI_DEVICE_DOCK; 1089 1090 /* 1091 * Scan devices that are ejectable. 1092 */ 1093 rv = AcpiGetHandle(ad->ad_handle, "_EJ0", &tmp); 1094 1095 if (ACPI_SUCCESS(rv)) 1096 ad->ad_flags |= ACPI_DEVICE_EJECT; 1097 } 1098 } 1099 1100 static int 1101 acpi_print(void *aux, const char *pnp) 1102 { 1103 struct acpi_attach_args *aa = aux; 1104 struct acpi_devnode *ad; 1105 const char *hid, *uid; 1106 ACPI_DEVICE_INFO *di; 1107 1108 ad = aa->aa_node; 1109 di = ad->ad_devinfo; 1110 1111 hid = di->HardwareId.String; 1112 uid = di->UniqueId.String; 1113 1114 if (pnp != NULL) { 1115 1116 if (di->Type != ACPI_TYPE_DEVICE) { 1117 1118 aprint_normal("%s (ACPI Object Type '%s') at %s", 1119 ad->ad_name, AcpiUtGetTypeName(ad->ad_type), pnp); 1120 1121 return UNCONF; 1122 } 1123 1124 if ((di->Valid & ACPI_VALID_HID) == 0 || hid == NULL) 1125 return 0; 1126 1127 aprint_normal("%s (%s) ", ad->ad_name, hid); 1128 acpi_print_dev(hid); 1129 aprint_normal("at %s", pnp); 1130 1131 return UNCONF; 1132 } 1133 1134 aprint_normal(" (%s", ad->ad_name); 1135 1136 if ((di->Valid & ACPI_VALID_HID) != 0 && hid != NULL) { 1137 1138 aprint_normal(", %s", hid); 1139 1140 if ((di->Valid & ACPI_VALID_UID) != 0 && uid != NULL) { 1141 1142 if (uid[0] == '\0') 1143 uid = "<null>"; 1144 1145 aprint_normal("-%s", uid); 1146 } 1147 } 1148 1149 aprint_normal(")"); 1150 1151 return UNCONF; 1152 } 1153 1154 /* 1155 * Notify. 1156 */ 1157 static void 1158 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1159 { 1160 struct acpi_softc *sc = acpi_softc; 1161 struct acpi_devnode *ad; 1162 ACPI_NOTIFY_HANDLER notify; 1163 1164 KASSERT(sc != NULL); 1165 KASSERT(aux == NULL); 1166 KASSERT(acpi_active != 0); 1167 1168 if (acpi_suspended != 0) 1169 return; 1170 1171 /* 1172 * System: 0x00 - 0x7F. 1173 * Device: 0x80 - 0xFF. 1174 */ 1175 switch (event) { 1176 1177 case ACPI_NOTIFY_BUS_CHECK: 1178 case ACPI_NOTIFY_DEVICE_CHECK: 1179 case ACPI_NOTIFY_DEVICE_WAKE: 1180 case ACPI_NOTIFY_EJECT_REQUEST: 1181 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1182 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1183 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1184 case ACPI_NOTIFY_POWER_FAULT: 1185 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1186 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1187 case ACPI_NOTIFY_RESERVED: 1188 case ACPI_NOTIFY_LOCALITY_UPDATE: 1189 break; 1190 } 1191 1192 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1193 "%s (%p)\n", event, acpi_name(handle), handle)); 1194 1195 /* 1196 * We deliver notifications only to drivers 1197 * that have been successfully attached and 1198 * that have registered a handler with us. 1199 * The opaque pointer is always the device_t. 1200 */ 1201 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) { 1202 1203 if (ad->ad_device == NULL) 1204 continue; 1205 1206 if ((notify = atomic_load_acquire(&ad->ad_notify)) == NULL) 1207 continue; 1208 1209 if (ad->ad_handle != handle) 1210 continue; 1211 1212 (*notify)(ad->ad_handle, event, ad->ad_device); 1213 1214 return; 1215 } 1216 1217 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1218 "for %s (%p)\n", event, acpi_name(handle), handle); 1219 } 1220 1221 bool 1222 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1223 { 1224 struct acpi_softc *sc = acpi_softc; 1225 1226 KASSERT(sc != NULL); 1227 KASSERT(acpi_active != 0); 1228 1229 if (acpi_suspended != 0) 1230 goto fail; 1231 1232 if (ad == NULL || notify == NULL) 1233 goto fail; 1234 1235 KASSERTMSG(ad->ad_notify == NULL, 1236 "%s: ACPI node %s already has notify handler: %p", 1237 ad->ad_device ? device_xname(ad->ad_device) : "(unknown)", 1238 ad->ad_name, 1239 ad->ad_notify); 1240 atomic_store_release(&ad->ad_notify, notify); 1241 1242 return true; 1243 1244 fail: 1245 aprint_error_dev(sc->sc_dev, "failed to register notify " 1246 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1247 1248 return false; 1249 } 1250 1251 void 1252 acpi_deregister_notify(struct acpi_devnode *ad) 1253 { 1254 1255 atomic_store_relaxed(&ad->ad_notify, NULL); 1256 1257 /* Wait for any in-flight calls to the notifier to complete. */ 1258 AcpiOsWaitEventsComplete(); 1259 } 1260 1261 /* 1262 * Fixed buttons. 1263 */ 1264 static void 1265 acpi_register_fixed_button(struct acpi_softc *sc, int event) 1266 { 1267 struct sysmon_pswitch *smpsw; 1268 ACPI_STATUS rv; 1269 int type; 1270 1271 switch (event) { 1272 1273 case ACPI_EVENT_POWER_BUTTON: 1274 1275 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1276 return; 1277 1278 type = PSWITCH_TYPE_POWER; 1279 smpsw = &sc->sc_smpsw_power; 1280 break; 1281 1282 case ACPI_EVENT_SLEEP_BUTTON: 1283 1284 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1285 return; 1286 1287 type = PSWITCH_TYPE_SLEEP; 1288 smpsw = &sc->sc_smpsw_sleep; 1289 break; 1290 1291 default: 1292 rv = AE_TYPE; 1293 goto fail; 1294 } 1295 1296 smpsw->smpsw_type = type; 1297 smpsw->smpsw_name = device_xname(sc->sc_dev); 1298 1299 if (sysmon_pswitch_register(smpsw) != 0) { 1300 rv = AE_ERROR; 1301 goto fail; 1302 } 1303 1304 AcpiClearEvent(event); 1305 1306 rv = AcpiInstallFixedEventHandler(event, 1307 acpi_fixed_button_handler, smpsw); 1308 1309 if (ACPI_FAILURE(rv)) { 1310 sysmon_pswitch_unregister(smpsw); 1311 goto fail; 1312 } 1313 1314 aprint_normal_dev(sc->sc_dev, "fixed %s button present\n", 1315 (type != PSWITCH_TYPE_SLEEP) ? "power" : "sleep"); 1316 1317 return; 1318 1319 fail: 1320 aprint_error_dev(sc->sc_dev, "failed to register " 1321 "fixed event %d: %s\n", event, AcpiFormatException(rv)); 1322 } 1323 1324 static void 1325 acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1326 { 1327 struct sysmon_pswitch *smpsw; 1328 ACPI_STATUS rv; 1329 1330 switch (event) { 1331 1332 case ACPI_EVENT_POWER_BUTTON: 1333 smpsw = &sc->sc_smpsw_power; 1334 1335 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1336 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1337 return; 1338 } 1339 1340 break; 1341 1342 case ACPI_EVENT_SLEEP_BUTTON: 1343 smpsw = &sc->sc_smpsw_sleep; 1344 1345 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1346 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1347 return; 1348 } 1349 1350 break; 1351 1352 default: 1353 rv = AE_TYPE; 1354 goto fail; 1355 } 1356 1357 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1358 1359 if (ACPI_SUCCESS(rv)) { 1360 sysmon_pswitch_unregister(smpsw); 1361 return; 1362 } 1363 1364 fail: 1365 aprint_error_dev(sc->sc_dev, "failed to deregister " 1366 "fixed event: %s\n", AcpiFormatException(rv)); 1367 } 1368 1369 static uint32_t 1370 acpi_fixed_button_handler(void *context) 1371 { 1372 static const int handler = OSL_NOTIFY_HANDLER; 1373 struct sysmon_pswitch *smpsw = context; 1374 1375 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1376 1377 return ACPI_INTERRUPT_HANDLED; 1378 } 1379 1380 static void 1381 acpi_fixed_button_pressed(void *context) 1382 { 1383 struct sysmon_pswitch *smpsw = context; 1384 1385 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1386 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1387 "power" : "sleep")); 1388 1389 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1390 } 1391 1392 /* 1393 * Sleep. 1394 */ 1395 static void 1396 acpi_sleep_init(struct acpi_softc *sc) 1397 { 1398 uint8_t a, b, i; 1399 ACPI_STATUS rv; 1400 1401 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1402 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1403 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1404 1405 /* 1406 * Evaluate supported sleep states. 1407 */ 1408 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1409 1410 rv = AcpiGetSleepTypeData(i, &a, &b); 1411 1412 if (ACPI_SUCCESS(rv)) 1413 sc->sc_sleepstates |= __BIT(i); 1414 } 1415 } 1416 1417 /* 1418 * Must be called with interrupts enabled. 1419 */ 1420 void 1421 acpi_enter_sleep_state(int state) 1422 { 1423 struct acpi_softc *sc = acpi_softc; 1424 ACPI_STATUS rv; 1425 1426 if (acpi_softc == NULL) 1427 return; 1428 1429 if (state == sc->sc_sleepstate) 1430 return; 1431 1432 if (state < ACPI_STATE_S0 || state > ACPI_STATE_S5) 1433 return; 1434 1435 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1436 1437 switch (state) { 1438 1439 case ACPI_STATE_S0: 1440 sc->sc_sleepstate = ACPI_STATE_S0; 1441 return; 1442 1443 case ACPI_STATE_S1: 1444 case ACPI_STATE_S2: 1445 case ACPI_STATE_S3: 1446 case ACPI_STATE_S4: 1447 1448 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1449 aprint_error_dev(sc->sc_dev, "sleep state " 1450 "S%d is not available\n", state); 1451 return; 1452 } 1453 1454 /* 1455 * Evaluate the _TTS method. This should be done before 1456 * pmf_system_suspend(9) and the evaluation of _PTS. 1457 * We should also re-evaluate this once we return to 1458 * S0 or if we abort the sleep state transition in the 1459 * middle (see ACPI 3.0, section 7.3.6). In reality, 1460 * however, the _TTS method is seldom seen in the field. 1461 */ 1462 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1463 1464 if (ACPI_SUCCESS(rv)) 1465 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1466 1467 if (state != ACPI_STATE_S1 && 1468 pmf_system_suspend(PMF_Q_NONE) != true) { 1469 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1470 break; 1471 } 1472 1473 /* 1474 * This will evaluate the _PTS and _SST methods, 1475 * but unlike the documentation claims, not _GTS, 1476 * which is evaluated in AcpiEnterSleepState(). 1477 * This must be called with interrupts enabled. 1478 */ 1479 rv = AcpiEnterSleepStatePrep(state); 1480 1481 if (ACPI_FAILURE(rv)) { 1482 aprint_error_dev(sc->sc_dev, "failed to prepare " 1483 "S%d: %s\n", state, AcpiFormatException(rv)); 1484 break; 1485 } 1486 1487 /* 1488 * After the _PTS method has been evaluated, we can 1489 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1490 */ 1491 acpi_wakedev_commit(sc, state); 1492 1493 sc->sc_sleepstate = state; 1494 1495 if (state == ACPI_STATE_S1) { 1496 1497 /* 1498 * Before the transition to S1, CPU caches 1499 * must be flushed (see ACPI 4.0, 7.3.4.2). 1500 * 1501 * Note that interrupts must be off before 1502 * calling AcpiEnterSleepState(). Conversely, 1503 * AcpiLeaveSleepState() should always be 1504 * called with interrupts enabled. 1505 */ 1506 acpi_md_OsDisableInterrupt(); 1507 1508 ACPI_FLUSH_CPU_CACHE(); 1509 rv = AcpiEnterSleepState(state); 1510 1511 if (ACPI_FAILURE(rv)) 1512 aprint_error_dev(sc->sc_dev, "failed to " 1513 "enter S1: %s\n", AcpiFormatException(rv)); 1514 1515 /* 1516 * Clear fixed events and disable all GPEs before 1517 * interrupts are enabled. 1518 */ 1519 AcpiClearEvent(ACPI_EVENT_PMTIMER); 1520 AcpiClearEvent(ACPI_EVENT_GLOBAL); 1521 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON); 1522 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON); 1523 AcpiClearEvent(ACPI_EVENT_RTC); 1524 #if (!ACPI_REDUCED_HARDWARE) 1525 AcpiHwDisableAllGpes(); 1526 #endif 1527 1528 acpi_md_OsEnableInterrupt(); 1529 rv = AcpiLeaveSleepState(state); 1530 1531 } else { 1532 1533 (void)acpi_md_sleep(state); 1534 1535 if (state == ACPI_STATE_S4) 1536 AcpiEnable(); 1537 1538 (void)pmf_system_bus_resume(PMF_Q_NONE); 1539 (void)AcpiLeaveSleepState(state); 1540 (void)AcpiSetFirmwareWakingVector(0, 0); 1541 (void)pmf_system_resume(PMF_Q_NONE); 1542 } 1543 1544 /* 1545 * No wake GPEs should be enabled at runtime. 1546 */ 1547 acpi_wakedev_commit(sc, ACPI_STATE_S0); 1548 break; 1549 1550 case ACPI_STATE_S5: 1551 1552 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1553 1554 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1555 1556 if (ACPI_FAILURE(rv)) { 1557 aprint_error_dev(sc->sc_dev, "failed to prepare " 1558 "S%d: %s\n", state, AcpiFormatException(rv)); 1559 break; 1560 } 1561 1562 (void)AcpiDisableAllGpes(); 1563 1564 DELAY(1000000); 1565 1566 sc->sc_sleepstate = state; 1567 acpi_md_OsDisableInterrupt(); 1568 1569 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1570 1571 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1572 1573 break; 1574 } 1575 1576 sc->sc_sleepstate = ACPI_STATE_S0; 1577 1578 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1579 } 1580 1581 /* 1582 * Sysctl. 1583 */ 1584 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1585 { 1586 const struct sysctlnode *rnode, *snode; 1587 int err; 1588 1589 err = sysctl_createv(clog, 0, NULL, &rnode, 1590 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1591 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1592 NULL, 0, NULL, 0, 1593 CTL_HW, CTL_CREATE, CTL_EOL); 1594 1595 if (err != 0) 1596 return; 1597 1598 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1599 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1600 "root", SYSCTL_DESCR("ACPI root pointer"), 1601 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1602 CTL_CREATE, CTL_EOL); 1603 1604 err = sysctl_createv(clog, 0, &rnode, &snode, 1605 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1606 "sleep", SYSCTL_DESCR("ACPI sleep"), 1607 NULL, 0, NULL, 0, 1608 CTL_CREATE, CTL_EOL); 1609 1610 if (err != 0) 1611 return; 1612 1613 (void)sysctl_createv(NULL, 0, &snode, NULL, 1614 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1615 "state", SYSCTL_DESCR("System sleep state"), 1616 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1617 CTL_CREATE, CTL_EOL); 1618 1619 (void)sysctl_createv(NULL, 0, &snode, NULL, 1620 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1621 "states", SYSCTL_DESCR("Supported sleep states"), 1622 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1623 CTL_CREATE, CTL_EOL); 1624 1625 err = sysctl_createv(clog, 0, &rnode, &rnode, 1626 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1627 "stat", SYSCTL_DESCR("ACPI statistics"), 1628 NULL, 0, NULL, 0, 1629 CTL_CREATE, CTL_EOL); 1630 1631 if (err != 0) 1632 return; 1633 1634 (void)sysctl_createv(clog, 0, &rnode, NULL, 1635 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1636 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1637 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1638 CTL_CREATE, CTL_EOL); 1639 1640 (void)sysctl_createv(clog, 0, &rnode, NULL, 1641 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1642 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1643 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1644 CTL_CREATE, CTL_EOL); 1645 1646 (void)sysctl_createv(clog, 0, &rnode, NULL, 1647 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1648 "fixed", SYSCTL_DESCR("Number of fixed events"), 1649 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1650 CTL_CREATE, CTL_EOL); 1651 1652 (void)sysctl_createv(clog, 0, &rnode, NULL, 1653 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1654 "method", SYSCTL_DESCR("Number of methods executed"), 1655 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1656 CTL_CREATE, CTL_EOL); 1657 1658 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1659 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1660 } 1661 1662 static int 1663 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1664 { 1665 struct sysctlnode node; 1666 uint64_t t; 1667 int err, i; 1668 1669 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1670 t += AcpiFixedEventCount[i]; 1671 1672 node = *rnode; 1673 node.sysctl_data = &t; 1674 1675 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1676 1677 if (err || newp == NULL) 1678 return err; 1679 1680 return 0; 1681 } 1682 1683 static int 1684 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1685 { 1686 struct acpi_softc *sc = acpi_softc; 1687 struct sysctlnode node; 1688 int err, t; 1689 1690 if (acpi_softc == NULL) 1691 return ENOSYS; 1692 1693 node = *rnode; 1694 t = sc->sc_sleepstate; 1695 node.sysctl_data = &t; 1696 1697 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1698 1699 if (err || newp == NULL) 1700 return err; 1701 1702 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1703 return EINVAL; 1704 1705 acpi_enter_sleep_state(t); 1706 1707 return 0; 1708 } 1709 1710 static int 1711 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1712 { 1713 struct acpi_softc *sc = acpi_softc; 1714 struct sysctlnode node; 1715 char t[3 * 6 + 1]; 1716 int err; 1717 1718 if (acpi_softc == NULL) 1719 return ENOSYS; 1720 1721 (void)memset(t, '\0', sizeof(t)); 1722 1723 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1724 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1725 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1726 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1727 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1728 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1729 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1730 1731 node = *rnode; 1732 node.sysctl_data = &t; 1733 1734 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1735 1736 if (err || newp == NULL) 1737 return err; 1738 1739 return 0; 1740 } 1741 1742 /* 1743 * Tables. 1744 */ 1745 ACPI_PHYSICAL_ADDRESS 1746 acpi_OsGetRootPointer(void) 1747 { 1748 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1749 1750 /* 1751 * We let MD code handle this since there are multiple ways to do it: 1752 * 1753 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1754 * 1755 * IA-64: Use the EFI. 1756 */ 1757 PhysicalAddress = acpi_md_OsGetRootPointer(); 1758 1759 if (acpi_root_pointer == 0) 1760 acpi_root_pointer = PhysicalAddress; 1761 1762 return PhysicalAddress; 1763 } 1764 1765 static ACPI_TABLE_HEADER * 1766 acpi_map_rsdt(void) 1767 { 1768 ACPI_PHYSICAL_ADDRESS paddr; 1769 ACPI_TABLE_RSDP *rsdp; 1770 1771 paddr = AcpiOsGetRootPointer(); 1772 1773 if (paddr == 0) 1774 return NULL; 1775 1776 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1777 1778 if (rsdp == NULL) 1779 return NULL; 1780 1781 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1782 paddr = rsdp->XsdtPhysicalAddress; 1783 else 1784 paddr = rsdp->RsdtPhysicalAddress; 1785 1786 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1787 1788 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1789 } 1790 1791 /* 1792 * XXX: Refactor to be a generic function that unmaps tables. 1793 */ 1794 static void 1795 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1796 { 1797 1798 if (rsdt == NULL) 1799 return; 1800 1801 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1802 } 1803 1804 /* 1805 * XXX: Refactor to be a generic function that maps tables. 1806 */ 1807 ACPI_STATUS 1808 acpi_madt_map(void) 1809 { 1810 ACPI_STATUS rv; 1811 1812 if (madt_header != NULL) 1813 return AE_ALREADY_EXISTS; 1814 1815 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); 1816 1817 if (ACPI_FAILURE(rv)) 1818 return rv; 1819 1820 return AE_OK; 1821 } 1822 1823 void 1824 acpi_madt_unmap(void) 1825 { 1826 madt_header = NULL; 1827 } 1828 1829 ACPI_STATUS 1830 acpi_gtdt_map(void) 1831 { 1832 ACPI_STATUS rv; 1833 1834 if (gtdt_header != NULL) 1835 return AE_ALREADY_EXISTS; 1836 1837 rv = AcpiGetTable(ACPI_SIG_GTDT, 1, >dt_header); 1838 1839 if (ACPI_FAILURE(rv)) 1840 return rv; 1841 1842 return AE_OK; 1843 } 1844 1845 void 1846 acpi_gtdt_unmap(void) 1847 { 1848 gtdt_header = NULL; 1849 } 1850 1851 /* 1852 * XXX: Refactor to be a generic function that walks tables. 1853 */ 1854 void 1855 acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) 1856 { 1857 ACPI_SUBTABLE_HEADER *hdrp; 1858 char *madtend, *where; 1859 1860 madtend = (char *)madt_header + madt_header->Length; 1861 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); 1862 1863 while (where < madtend) { 1864 1865 hdrp = (ACPI_SUBTABLE_HEADER *)where; 1866 1867 if (hdrp->Length == 0 || ACPI_FAILURE(func(hdrp, aux))) 1868 break; 1869 1870 where += hdrp->Length; 1871 } 1872 } 1873 1874 void 1875 acpi_gtdt_walk(ACPI_STATUS (*func)(ACPI_GTDT_HEADER *, void *), void *aux) 1876 { 1877 ACPI_GTDT_HEADER *hdrp; 1878 char *gtdtend, *where; 1879 1880 gtdtend = (char *)gtdt_header + gtdt_header->Length; 1881 where = (char *)gtdt_header + sizeof (ACPI_TABLE_GTDT); 1882 1883 while (where < gtdtend) { 1884 1885 hdrp = (ACPI_GTDT_HEADER *)where; 1886 1887 if (hdrp->Length == 0 || ACPI_FAILURE(func(hdrp, aux))) 1888 break; 1889 1890 where += hdrp->Length; 1891 } 1892 } 1893 1894 /* 1895 * Miscellaneous. 1896 */ 1897 static bool 1898 acpi_is_scope(struct acpi_devnode *ad) 1899 { 1900 int i; 1901 1902 /* 1903 * Return true if the node is a root scope. 1904 */ 1905 if (ad->ad_parent == NULL) 1906 return false; 1907 1908 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1909 return false; 1910 1911 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1912 1913 if (acpi_scopes[i] == NULL) 1914 continue; 1915 1916 if (ad->ad_handle == acpi_scopes[i]) 1917 return true; 1918 } 1919 1920 return false; 1921 } 1922 1923 bool 1924 acpi_device_present(ACPI_HANDLE handle) 1925 { 1926 ACPI_STATUS rv; 1927 ACPI_INTEGER sta; 1928 1929 rv = acpi_eval_integer(handle, "_STA", &sta); 1930 1931 if (ACPI_FAILURE(rv)) { 1932 /* No _STA method -> must be there */ 1933 return rv == AE_NOT_FOUND; 1934 } 1935 1936 return (sta & ACPI_STA_OK) == ACPI_STA_OK; 1937 } 1938 1939 /* 1940 * ACPIVERBOSE. 1941 */ 1942 void 1943 acpi_load_verbose(void) 1944 { 1945 1946 if (acpi_verbose_loaded == 0) 1947 module_autoload("acpiverbose", MODULE_CLASS_MISC); 1948 } 1949 1950 void 1951 acpi_print_verbose_stub(struct acpi_softc *sc) 1952 { 1953 1954 acpi_load_verbose(); 1955 1956 if (acpi_verbose_loaded != 0) 1957 acpi_print_verbose(sc); 1958 } 1959 1960 void 1961 acpi_print_dev_stub(const char *pnpstr) 1962 { 1963 1964 acpi_load_verbose(); 1965 1966 if (acpi_verbose_loaded != 0) 1967 acpi_print_dev(pnpstr); 1968 } 1969 1970 MALLOC_DECLARE(M_ACPI); /* XXX: ACPI_ACTIVATE_DEV should use kmem(9). */ 1971 1972 /* 1973 * ACPI_ACTIVATE_DEV. 1974 */ 1975 static void 1976 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 1977 { 1978 1979 #ifndef ACPI_ACTIVATE_DEV 1980 return; 1981 } 1982 #else 1983 static const int valid = ACPI_VALID_HID; 1984 ACPI_DEVICE_INFO *newdi; 1985 ACPI_STATUS rv; 1986 1987 1988 /* 1989 * If the device is valid and present, 1990 * but not enabled, try to activate it. 1991 */ 1992 if (((*di)->Valid & valid) != valid) 1993 return; 1994 1995 if (!acpi_device_present(handle)) 1996 return; 1997 1998 rv = acpi_allocate_resources(handle); 1999 2000 if (ACPI_FAILURE(rv)) 2001 goto fail; 2002 2003 rv = AcpiGetObjectInfo(handle, &newdi); 2004 2005 if (ACPI_FAILURE(rv)) 2006 goto fail; 2007 2008 ACPI_FREE(*di); 2009 *di = newdi; 2010 2011 aprint_verbose_dev(acpi_softc->sc_dev, 2012 "%s activated\n", (*di)->HardwareId.String); 2013 2014 return; 2015 2016 fail: 2017 aprint_error_dev(acpi_softc->sc_dev, "failed to " 2018 "activate %s\n", (*di)->HardwareId.String); 2019 } 2020 2021 /* 2022 * XXX: This very incomplete. 2023 */ 2024 ACPI_STATUS 2025 acpi_allocate_resources(ACPI_HANDLE handle) 2026 { 2027 ACPI_BUFFER bufp, bufc, bufn; 2028 ACPI_RESOURCE *resp, *resc, *resn; 2029 ACPI_RESOURCE_IRQ *irq; 2030 #if 0 2031 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 2032 #endif 2033 ACPI_STATUS rv; 2034 uint delta; 2035 2036 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 2037 if (ACPI_FAILURE(rv)) 2038 goto out; 2039 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 2040 if (ACPI_FAILURE(rv)) { 2041 goto out1; 2042 } 2043 2044 bufn.Length = 1000; 2045 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 2046 resp = bufp.Pointer; 2047 resc = bufc.Pointer; 2048 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 2049 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 2050 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 2051 resp = ACPI_NEXT_RESOURCE(resp); 2052 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 2053 break; 2054 /* Found identical Id */ 2055 resn->Type = resc->Type; 2056 switch (resc->Type) { 2057 case ACPI_RESOURCE_TYPE_IRQ: 2058 memcpy(&resn->Data, &resp->Data, 2059 sizeof(ACPI_RESOURCE_IRQ)); 2060 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 2061 irq->Interrupts[0] = 2062 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 2063 Interrupts[irq->InterruptCount-1]; 2064 irq->InterruptCount = 1; 2065 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 2066 break; 2067 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 2068 memcpy(&resn->Data, &resp->Data, 2069 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 2070 #if 0 2071 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 2072 /* 2073 * XXX: Not duplicating the interrupt logic above 2074 * because its not clear what it accomplishes. 2075 */ 2076 xirq->Interrupts[0] = 2077 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 2078 Interrupts[irq->NumberOfInterrupts-1]; 2079 xirq->NumberOfInterrupts = 1; 2080 #endif 2081 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 2082 break; 2083 case ACPI_RESOURCE_TYPE_IO: 2084 memcpy(&resn->Data, &resp->Data, 2085 sizeof(ACPI_RESOURCE_IO)); 2086 resn->Length = resp->Length; 2087 break; 2088 default: 2089 aprint_error_dev(acpi_softc->sc_dev, 2090 "%s: invalid type %u\n", __func__, resc->Type); 2091 rv = AE_BAD_DATA; 2092 goto out2; 2093 } 2094 resc = ACPI_NEXT_RESOURCE(resc); 2095 resn = ACPI_NEXT_RESOURCE(resn); 2096 resp = ACPI_NEXT_RESOURCE(resp); 2097 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 2098 if (delta >= 2099 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 2100 bufn.Length *= 2; 2101 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 2102 M_ACPI, M_WAITOK); 2103 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 2104 delta); 2105 } 2106 } 2107 2108 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 2109 aprint_error_dev(acpi_softc->sc_dev, 2110 "%s: resc not exhausted\n", __func__); 2111 rv = AE_BAD_DATA; 2112 goto out3; 2113 } 2114 2115 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 2116 rv = AcpiSetCurrentResources(handle, &bufn); 2117 2118 if (ACPI_FAILURE(rv)) 2119 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 2120 "resources: %s\n", __func__, AcpiFormatException(rv)); 2121 2122 out3: 2123 free(bufn.Pointer, M_ACPI); 2124 out2: 2125 ACPI_FREE(bufc.Pointer); 2126 out1: 2127 ACPI_FREE(bufp.Pointer); 2128 out: 2129 return rv; 2130 } 2131 2132 #endif /* ACPI_ACTIVATE_DEV */ 2133