1 /* $NetBSD: acpi.c,v 1.290 2021/02/05 17:13:40 thorpej 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 1.290 2021/02/05 17:13:40 thorpej 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/device.h> 111 #include <sys/kernel.h> 112 #include <sys/kmem.h> 113 #include <sys/malloc.h> 114 #include <sys/module.h> 115 #include <sys/mutex.h> 116 #include <sys/sysctl.h> 117 #include <sys/systm.h> 118 #include <sys/timetc.h> 119 120 #include <dev/acpi/acpireg.h> 121 #include <dev/acpi/acpivar.h> 122 #include <dev/acpi/acpi_mcfg.h> 123 #include <dev/acpi/acpi_osd.h> 124 #include <dev/acpi/acpi_pci.h> 125 #include <dev/acpi/acpi_power.h> 126 #include <dev/acpi/acpi_timer.h> 127 #include <dev/acpi/acpi_wakedev.h> 128 129 #include <machine/acpi_machdep.h> 130 131 #include "ioconf.h" 132 133 #define _COMPONENT ACPI_BUS_COMPONENT 134 ACPI_MODULE_NAME ("acpi") 135 136 /* 137 * The acpi_active variable is set when the ACPI subsystem is active. 138 * Machine-dependent code may wish to skip other steps (such as attaching 139 * subsystems that ACPI supercedes) when ACPI is active. 140 */ 141 int acpi_active = 0; 142 int acpi_suspended = 0; 143 int acpi_force_load = 0; 144 int acpi_verbose_loaded = 0; 145 146 struct acpi_softc *acpi_softc = NULL; 147 static uint64_t acpi_root_pointer; 148 extern kmutex_t acpi_interrupt_list_mtx; 149 static ACPI_HANDLE acpi_scopes[4]; 150 ACPI_TABLE_HEADER *madt_header; 151 ACPI_TABLE_HEADER *gtdt_header; 152 153 /* 154 * This structure provides a context for the ACPI 155 * namespace walk performed in acpi_build_tree(). 156 */ 157 struct acpi_walkcontext { 158 struct acpi_softc *aw_sc; 159 struct acpi_devnode *aw_parent; 160 }; 161 162 /* 163 * Ignored HIDs. 164 */ 165 static const char * const acpi_ignored_ids[] = { 166 #if defined(i386) || defined(x86_64) 167 "ACPI0007", /* ACPI CPUs do not attach to acpi(4) */ 168 "PNP0000", /* AT interrupt controller is handled internally */ 169 "PNP0001", /* EISA interrupt controller is handled internally */ 170 "PNP0200", /* AT DMA controller is handled internally */ 171 "PNP0A??", /* PCI Busses are handled internally */ 172 "PNP0B00", /* AT RTC is handled internally */ 173 "PNP0C02", /* PnP motherboard resources */ 174 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 175 #endif 176 #if defined(x86_64) 177 "PNP0C04", /* FPU is handled internally */ 178 #endif 179 #if defined(__aarch64__) 180 "ACPI0004", /* ACPI module devices are handled internally */ 181 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 182 #endif 183 NULL 184 }; 185 186 /* 187 * Devices that should be attached early. 188 */ 189 static const char * const acpi_early_ids[] = { 190 "PNP0C09", /* acpiec(4) */ 191 NULL 192 }; 193 194 static int acpi_match(device_t, cfdata_t, void *); 195 static int acpi_submatch(device_t, cfdata_t, const int *, void *); 196 static void acpi_attach(device_t, device_t, void *); 197 static int acpi_detach(device_t, int); 198 static void acpi_childdet(device_t, device_t); 199 static bool acpi_suspend(device_t, const pmf_qual_t *); 200 static bool acpi_resume(device_t, const pmf_qual_t *); 201 202 static void acpi_build_tree(struct acpi_softc *); 203 static void acpi_config_tree(struct acpi_softc *); 204 static void acpi_config_dma(struct acpi_softc *); 205 static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, 206 void *, void **); 207 static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t, 208 void *, void **); 209 static void acpi_make_name(struct acpi_devnode *, uint32_t); 210 211 static int acpi_rescan(device_t, const char *, const int *); 212 static void acpi_rescan_early(struct acpi_softc *); 213 static void acpi_rescan_nodes(struct acpi_softc *); 214 static void acpi_rescan_capabilities(device_t); 215 static int acpi_print(void *aux, const char *); 216 217 static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); 218 219 static void acpi_register_fixed_button(struct acpi_softc *, int); 220 static void acpi_deregister_fixed_button(struct acpi_softc *, int); 221 static uint32_t acpi_fixed_button_handler(void *); 222 static void acpi_fixed_button_pressed(void *); 223 224 static void acpi_sleep_init(struct acpi_softc *); 225 226 static int sysctl_hw_acpi_fixedstats(SYSCTLFN_PROTO); 227 static int sysctl_hw_acpi_sleepstate(SYSCTLFN_PROTO); 228 static int sysctl_hw_acpi_sleepstates(SYSCTLFN_PROTO); 229 230 static bool acpi_is_scope(struct acpi_devnode *); 231 static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 232 static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 233 234 void acpi_print_verbose_stub(struct acpi_softc *); 235 void acpi_print_dev_stub(const char *); 236 237 static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **); 238 ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE); 239 240 void (*acpi_print_verbose)(struct acpi_softc *) = acpi_print_verbose_stub; 241 void (*acpi_print_dev)(const char *) = acpi_print_dev_stub; 242 243 bus_dma_tag_t acpi_default_dma_tag(struct acpi_softc *, struct acpi_devnode *); 244 bus_dma_tag_t acpi_default_dma64_tag(struct acpi_softc *, struct acpi_devnode *); 245 pci_chipset_tag_t acpi_default_pci_chipset_tag(struct acpi_softc *, int, int); 246 247 CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 248 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 249 250 /* 251 * Probe for ACPI support. 252 * 253 * This is called by the machine-dependent ACPI front-end. 254 * Note: this is not an autoconfiguration interface function. 255 */ 256 int 257 acpi_probe(void) 258 { 259 ACPI_TABLE_HEADER *rsdt; 260 ACPI_STATUS rv; 261 int quirks; 262 263 if (acpi_softc != NULL) 264 panic("%s: already probed", __func__); 265 266 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 267 268 /* 269 * Start up ACPICA. 270 */ 271 AcpiGbl_EnableInterpreterSlack = true; 272 273 rv = AcpiInitializeSubsystem(); 274 275 if (ACPI_FAILURE(rv)) { 276 aprint_error("%s: failed to initialize subsystem\n", __func__); 277 return 0; 278 } 279 280 /* 281 * Allocate space for RSDT/XSDT and DSDT, 282 * but allow resizing if more tables exist. 283 */ 284 rv = AcpiInitializeTables(NULL, 2, true); 285 286 if (ACPI_FAILURE(rv)) { 287 aprint_error("%s: failed to initialize tables\n", __func__); 288 goto fail; 289 } 290 291 rv = AcpiLoadTables(); 292 293 if (ACPI_FAILURE(rv)) { 294 aprint_error("%s: failed to load tables\n", __func__); 295 goto fail; 296 } 297 298 rsdt = acpi_map_rsdt(); 299 300 if (rsdt == NULL) { 301 aprint_error("%s: failed to map RSDT\n", __func__); 302 goto fail; 303 } 304 305 quirks = acpi_find_quirks(); 306 307 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_BROKEN) != 0) { 308 309 aprint_normal("ACPI: BIOS is listed as broken:\n"); 310 aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 311 "AslId <%4.4s,%08x>\n", rsdt->OemId, rsdt->OemTableId, 312 rsdt->OemRevision, rsdt->AslCompilerId, 313 rsdt->AslCompilerRevision); 314 aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n"); 315 316 acpi_unmap_rsdt(rsdt); 317 goto fail; 318 } 319 320 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_OLDBIOS) != 0) { 321 322 aprint_normal("ACPI: BIOS is too old (%s). " 323 "Set acpi_force_load to use.\n", 324 pmf_get_platform("bios-date")); 325 326 acpi_unmap_rsdt(rsdt); 327 goto fail; 328 } 329 330 acpi_unmap_rsdt(rsdt); 331 332 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 333 334 if (ACPI_FAILURE(rv)) { 335 aprint_error("%s: failed to enable subsystem\n", __func__); 336 goto fail; 337 } 338 339 return 1; 340 341 fail: 342 (void)AcpiTerminate(); 343 344 return 0; 345 } 346 347 void 348 acpi_disable(void) 349 { 350 351 if (acpi_softc == NULL) 352 return; 353 354 KASSERT(acpi_active != 0); 355 356 if (AcpiGbl_FADT.SmiCommand != 0) 357 AcpiDisable(); 358 } 359 360 int 361 acpi_check(device_t parent, const char *ifattr) 362 { 363 return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); 364 } 365 366 int 367 acpi_reset(void) 368 { 369 struct acpi_softc *sc = acpi_softc; 370 ACPI_GENERIC_ADDRESS *ResetReg; 371 ACPI_PCI_ID PciId; 372 ACPI_STATUS status; 373 374 if (sc == NULL) 375 return ENXIO; 376 377 ResetReg = &AcpiGbl_FADT.ResetRegister; 378 379 /* Check if the reset register is supported */ 380 if (!(AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) || 381 !ResetReg->Address) { 382 return ENOENT; 383 } 384 385 switch (ResetReg->SpaceId) { 386 case ACPI_ADR_SPACE_PCI_CONFIG: 387 PciId.Segment = PciId.Bus = 0; 388 PciId.Device = ACPI_GAS_PCI_DEV(ResetReg->Address); 389 PciId.Function = ACPI_GAS_PCI_FUNC(ResetReg->Address); 390 status = AcpiOsWritePciConfiguration(&PciId, 391 ACPI_GAS_PCI_REGOFF(ResetReg->Address), 392 AcpiGbl_FADT.ResetValue, ResetReg->BitWidth); 393 break; 394 case ACPI_ADR_SPACE_SYSTEM_IO: 395 case ACPI_ADR_SPACE_SYSTEM_MEMORY: 396 status = AcpiReset(); 397 break; 398 default: 399 status = AE_TYPE; 400 break; 401 } 402 403 return ACPI_FAILURE(status) ? EIO : 0; 404 } 405 406 /* 407 * Autoconfiguration. 408 */ 409 static int 410 acpi_match(device_t parent, cfdata_t match, void *aux) 411 { 412 /* 413 * XXX: Nada; MD code has called acpi_probe(). 414 */ 415 return 1; 416 } 417 418 static int 419 acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 420 { 421 struct cfattach *ca; 422 423 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 424 425 return (ca == &acpi_ca); 426 } 427 428 static void 429 acpi_attach(device_t parent, device_t self, void *aux) 430 { 431 struct acpi_softc *sc = device_private(self); 432 struct acpibus_attach_args *aa = aux; 433 ACPI_TABLE_HEADER *rsdt, *hdr; 434 ACPI_STATUS rv; 435 int i; 436 437 aprint_naive("\n"); 438 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 439 440 if (acpi_softc != NULL) 441 panic("%s: already attached", __func__); 442 443 rsdt = acpi_map_rsdt(); 444 445 if (rsdt == NULL) 446 aprint_error_dev(self, "X/RSDT: Not found\n"); 447 else { 448 aprint_verbose_dev(self, 449 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 450 rsdt->OemId, rsdt->OemTableId, 451 rsdt->OemRevision, 452 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 453 } 454 455 acpi_unmap_rsdt(rsdt); 456 457 sc->sc_dev = self; 458 sc->sc_root = NULL; 459 460 sc->sc_sleepstate = ACPI_STATE_S0; 461 sc->sc_quirks = acpi_find_quirks(); 462 463 sysmon_power_settype("acpi"); 464 465 sc->sc_iot = aa->aa_iot; 466 sc->sc_memt = aa->aa_memt; 467 sc->sc_pciflags = aa->aa_pciflags; 468 sc->sc_ic = aa->aa_ic; 469 sc->sc_dmat = aa->aa_dmat; 470 sc->sc_dmat64 = aa->aa_dmat64; 471 472 SIMPLEQ_INIT(&sc->ad_head); 473 474 acpi_softc = sc; 475 476 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) 477 aprint_error_dev(self, "couldn't establish power handler\n"); 478 479 /* 480 * Bring ACPICA on-line. 481 */ 482 483 rv = AcpiEnableSubsystem(ACPI_FULL_INITIALIZATION); 484 485 if (ACPI_FAILURE(rv)) 486 goto fail; 487 488 /* 489 * Early initialization of acpiec(4) via ECDT. 490 */ 491 (void)config_found_ia(self, "acpiecdtbus", aa, NULL); 492 493 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 494 495 if (ACPI_FAILURE(rv)) 496 goto fail; 497 498 /* 499 * Scan the namespace and build our device tree. 500 */ 501 acpi_build_tree(sc); 502 503 #if NPCI > 0 504 /* 505 * Probe MCFG table 506 */ 507 acpimcfg_probe(sc); 508 #endif 509 510 acpi_md_callback(sc); 511 512 /* 513 * Early initialization of the _PDC control method 514 * that may load additional SSDT tables dynamically. 515 */ 516 (void)acpi_md_pdc(); 517 518 /* 519 * Install global notify handlers. 520 */ 521 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 522 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 523 524 if (ACPI_FAILURE(rv)) 525 goto fail; 526 527 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 528 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 529 530 if (ACPI_FAILURE(rv)) 531 goto fail; 532 533 acpi_active = 1; 534 535 if (!AcpiGbl_ReducedHardware) { 536 /* Show SCI interrupt. */ 537 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 538 AcpiGbl_FADT.SciInterrupt); 539 540 /* 541 * Install fixed-event handlers. 542 */ 543 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 544 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 545 } 546 547 /* 548 * Load drivers that operate on System Description Tables. 549 */ 550 for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i) { 551 rv = AcpiGetTableByIndex(i, &hdr); 552 if (ACPI_FAILURE(rv)) { 553 continue; 554 } 555 config_found_ia(sc->sc_dev, "acpisdtbus", hdr, NULL); 556 AcpiPutTable(hdr); 557 } 558 559 acpitimer_init(sc); 560 acpi_config_tree(sc); 561 acpi_sleep_init(sc); 562 563 #ifdef ACPI_DEBUG 564 acpi_debug_init(); 565 #endif 566 567 /* 568 * Print debug information. 569 */ 570 acpi_print_verbose(sc); 571 572 return; 573 574 fail: 575 aprint_error("%s: failed to initialize ACPI: %s\n", 576 __func__, AcpiFormatException(rv)); 577 } 578 579 /* 580 * XXX: This is incomplete. 581 */ 582 static int 583 acpi_detach(device_t self, int flags) 584 { 585 struct acpi_softc *sc = device_private(self); 586 ACPI_STATUS rv; 587 int rc; 588 589 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 590 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 591 592 if (ACPI_FAILURE(rv)) 593 return EBUSY; 594 595 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 596 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 597 598 if (ACPI_FAILURE(rv)) 599 return EBUSY; 600 601 if ((rc = config_detach_children(self, flags)) != 0) 602 return rc; 603 604 if ((rc = acpitimer_detach()) != 0) 605 return rc; 606 607 if (!AcpiGbl_ReducedHardware) { 608 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 609 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 610 } 611 612 pmf_device_deregister(self); 613 614 acpi_softc = NULL; 615 616 return 0; 617 } 618 619 static void 620 acpi_childdet(device_t self, device_t child) 621 { 622 struct acpi_softc *sc = device_private(self); 623 struct acpi_devnode *ad; 624 625 if (sc->sc_apmbus == child) 626 sc->sc_apmbus = NULL; 627 628 if (sc->sc_hpet == child) 629 sc->sc_hpet = NULL; 630 631 if (sc->sc_wdrt == child) 632 sc->sc_wdrt = NULL; 633 634 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 635 636 if (ad->ad_device == child) 637 ad->ad_device = NULL; 638 } 639 } 640 641 static bool 642 acpi_suspend(device_t dv, const pmf_qual_t *qual) 643 { 644 645 acpi_suspended = 1; 646 647 return true; 648 } 649 650 static bool 651 acpi_resume(device_t dv, const pmf_qual_t *qual) 652 { 653 654 acpi_suspended = 0; 655 656 return true; 657 } 658 659 /* 660 * Namespace scan. 661 */ 662 static void 663 acpi_build_tree(struct acpi_softc *sc) 664 { 665 struct acpi_walkcontext awc; 666 667 /* 668 * Get the root scope handles. 669 */ 670 KASSERT(__arraycount(acpi_scopes) == 4); 671 672 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 673 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 674 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 675 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 676 677 /* 678 * Make the root node. 679 */ 680 awc.aw_sc = sc; 681 awc.aw_parent = NULL; 682 683 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 684 685 KASSERT(sc->sc_root == NULL); 686 KASSERT(awc.aw_parent != NULL); 687 688 sc->sc_root = awc.aw_parent; 689 690 /* 691 * Build the internal namespace. 692 */ 693 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 694 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 695 696 /* 697 * Scan the internal namespace. 698 */ 699 (void)acpi_pcidev_scan(sc->sc_root); 700 } 701 702 static void 703 acpi_config_tree(struct acpi_softc *sc) 704 { 705 /* 706 * Assign bus_dma resources 707 */ 708 acpi_config_dma(sc); 709 710 /* 711 * Configure all everything found "at acpi?". 712 */ 713 (void)acpi_rescan(sc->sc_dev, NULL, NULL); 714 715 /* 716 * Update GPE information. 717 * 718 * Note that this must be called after 719 * all GPE handlers have been installed. 720 */ 721 (void)AcpiUpdateAllGpes(); 722 723 /* 724 * Defer rest of the configuration. 725 */ 726 (void)config_defer(sc->sc_dev, acpi_rescan_capabilities); 727 } 728 729 static void 730 acpi_config_dma(struct acpi_softc *sc) 731 { 732 struct acpi_devnode *ad; 733 734 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 735 736 if (ad->ad_device != NULL) 737 continue; 738 739 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 740 continue; 741 742 ad->ad_dmat = acpi_get_dma_tag(sc, ad); 743 ad->ad_dmat64 = acpi_get_dma64_tag(sc, ad); 744 } 745 } 746 747 static ACPI_STATUS 748 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 749 void *context, void **status) 750 { 751 struct acpi_walkcontext *awc = context; 752 struct acpi_softc *sc = awc->aw_sc; 753 struct acpi_devnode *ad; 754 ACPI_DEVICE_INFO *devinfo; 755 ACPI_OBJECT_TYPE type; 756 ACPI_STATUS rv; 757 758 rv = AcpiGetObjectInfo(handle, &devinfo); 759 760 if (ACPI_FAILURE(rv)) 761 return AE_OK; /* Do not terminate the walk. */ 762 763 type = devinfo->Type; 764 765 switch (type) { 766 767 case ACPI_TYPE_DEVICE: 768 acpi_activate_device(handle, &devinfo); 769 /* FALLTHROUGH */ 770 771 case ACPI_TYPE_PROCESSOR: 772 case ACPI_TYPE_THERMAL: 773 case ACPI_TYPE_POWER: 774 775 ad = kmem_zalloc(sizeof(*ad), KM_SLEEP); 776 777 ad->ad_device = NULL; 778 ad->ad_notify = NULL; 779 ad->ad_pciinfo = NULL; 780 ad->ad_wakedev = NULL; 781 782 ad->ad_type = type; 783 ad->ad_handle = handle; 784 ad->ad_devinfo = devinfo; 785 786 ad->ad_root = sc->sc_dev; 787 ad->ad_parent = awc->aw_parent; 788 789 acpi_match_node_init(ad); 790 acpi_make_name(ad, devinfo->Name); 791 792 /* 793 * Identify wake GPEs from the _PRW. Note that 794 * AcpiUpdateAllGpes() must be called afterwards. 795 */ 796 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) 797 acpi_wakedev_init(ad); 798 799 SIMPLEQ_INIT(&ad->ad_child_head); 800 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 801 802 if (ad->ad_parent != NULL) { 803 804 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 805 ad, ad_child_list); 806 } 807 808 awc->aw_parent = ad; 809 break; 810 811 default: 812 ACPI_FREE(devinfo); 813 break; 814 } 815 816 return AE_OK; 817 } 818 819 static ACPI_STATUS 820 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 821 void *context, void **status) 822 { 823 struct acpi_walkcontext *awc = context; 824 825 KASSERT(awc != NULL); 826 KASSERT(awc->aw_parent != NULL); 827 828 if (handle == awc->aw_parent->ad_handle) 829 awc->aw_parent = awc->aw_parent->ad_parent; 830 831 return AE_OK; 832 } 833 834 static void 835 acpi_make_name(struct acpi_devnode *ad, uint32_t name) 836 { 837 ACPI_NAME_UNION *anu; 838 int clear, i; 839 840 anu = (ACPI_NAME_UNION *)&name; 841 ad->ad_name[4] = '\0'; 842 843 for (i = 3, clear = 0; i >= 0; i--) { 844 845 if (clear == 0 && anu->Ascii[i] == '_') 846 ad->ad_name[i] = '\0'; 847 else { 848 ad->ad_name[i] = anu->Ascii[i]; 849 clear = 1; 850 } 851 } 852 853 if (ad->ad_name[0] == '\0') 854 ad->ad_name[0] = '_'; 855 } 856 857 bus_dma_tag_t 858 acpi_default_dma_tag(struct acpi_softc *sc, struct acpi_devnode *ad) 859 { 860 return sc->sc_dmat; 861 } 862 __weak_alias(acpi_get_dma_tag,acpi_default_dma_tag); 863 864 bus_dma_tag_t 865 acpi_default_dma64_tag(struct acpi_softc *sc, struct acpi_devnode *ad) 866 { 867 return sc->sc_dmat64; 868 } 869 __weak_alias(acpi_get_dma64_tag,acpi_default_dma64_tag); 870 871 pci_chipset_tag_t 872 acpi_default_pci_chipset_tag(struct acpi_softc *sc, int seg, int bbn) 873 { 874 return NULL; 875 } 876 __weak_alias(acpi_get_pci_chipset_tag,acpi_default_pci_chipset_tag); 877 878 /* 879 * Device attachment. 880 */ 881 static int 882 acpi_rescan(device_t self, const char *ifattr, const int *locators) 883 { 884 struct acpi_softc *sc = device_private(self); 885 struct acpi_attach_args aa; 886 887 /* 888 * Try to attach hpet(4) first via a specific table. 889 */ 890 aa.aa_memt = sc->sc_memt; 891 892 if (ifattr_match(ifattr, "acpihpetbus") && sc->sc_hpet == NULL) 893 sc->sc_hpet = config_found_ia(sc->sc_dev, 894 "acpihpetbus", &aa, NULL); 895 896 /* 897 * A two-pass scan for acpinodebus. 898 */ 899 if (ifattr_match(ifattr, "acpinodebus")) { 900 acpi_rescan_early(sc); 901 acpi_rescan_nodes(sc); 902 } 903 904 /* 905 * Attach APM emulation and acpiwdrt(4). 906 */ 907 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 908 sc->sc_apmbus = config_found_ia(sc->sc_dev, 909 "acpiapmbus", NULL, NULL); 910 911 if (ifattr_match(ifattr, "acpiwdrtbus") && sc->sc_wdrt == NULL) 912 sc->sc_wdrt = config_found_ia(sc->sc_dev, 913 "acpiwdrtbus", NULL, NULL); 914 915 return 0; 916 } 917 918 static void 919 acpi_rescan_early(struct acpi_softc *sc) 920 { 921 struct acpi_attach_args aa; 922 struct acpi_devnode *ad; 923 924 /* 925 * First scan for devices such as acpiec(4) that 926 * should be always attached before anything else. 927 * We want these devices to attach regardless of 928 * the device status and other restrictions. 929 */ 930 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 931 932 if (ad->ad_device != NULL) 933 continue; 934 935 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 936 continue; 937 938 if (acpi_match_hid(ad->ad_devinfo, acpi_early_ids) == 0) 939 continue; 940 941 aa.aa_node = ad; 942 aa.aa_iot = sc->sc_iot; 943 aa.aa_memt = sc->sc_memt; 944 if (ad->ad_pciinfo != NULL) { 945 aa.aa_pc = ad->ad_pciinfo->ap_pc; 946 aa.aa_pciflags = sc->sc_pciflags; 947 } 948 aa.aa_ic = sc->sc_ic; 949 aa.aa_dmat = ad->ad_dmat; 950 aa.aa_dmat64 = ad->ad_dmat64; 951 952 ad->ad_device = config_found_ia(sc->sc_dev, 953 "acpinodebus", &aa, acpi_print); 954 } 955 } 956 957 static void 958 acpi_rescan_nodes(struct acpi_softc *sc) 959 { 960 const char * const hpet_ids[] = { "PNP0103", NULL }; 961 struct acpi_attach_args aa; 962 struct acpi_devnode *ad; 963 ACPI_DEVICE_INFO *di; 964 965 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 966 967 if (ad->ad_device != NULL) 968 continue; 969 970 /* 971 * There is a bug in ACPICA: it defines the type 972 * of the scopes incorrectly for its own reasons. 973 */ 974 if (acpi_is_scope(ad) != false) 975 continue; 976 977 di = ad->ad_devinfo; 978 979 /* 980 * We only attach devices which are present, enabled, and 981 * functioning properly. However, if a device is enabled, 982 * it is decoding resources and we should claim these, 983 * if possible. This requires changes to bus_space(9). 984 */ 985 if (di->Type == ACPI_TYPE_DEVICE && 986 !acpi_device_present(ad->ad_handle)) { 987 continue; 988 } 989 990 if (di->Type == ACPI_TYPE_POWER) 991 continue; 992 993 if (di->Type == ACPI_TYPE_PROCESSOR) 994 continue; 995 996 if (acpi_match_hid(di, acpi_early_ids) != 0) 997 continue; 998 999 if (acpi_match_hid(di, acpi_ignored_ids) != 0) 1000 continue; 1001 1002 if (acpi_match_hid(di, hpet_ids) != 0 && sc->sc_hpet != NULL) 1003 continue; 1004 1005 aa.aa_node = ad; 1006 aa.aa_iot = sc->sc_iot; 1007 aa.aa_memt = sc->sc_memt; 1008 if (ad->ad_pciinfo != NULL) { 1009 aa.aa_pc = ad->ad_pciinfo->ap_pc; 1010 aa.aa_pciflags = sc->sc_pciflags; 1011 } 1012 aa.aa_ic = sc->sc_ic; 1013 aa.aa_dmat = ad->ad_dmat; 1014 aa.aa_dmat64 = ad->ad_dmat64; 1015 1016 ad->ad_device = config_found_ia(sc->sc_dev, 1017 "acpinodebus", &aa, acpi_print); 1018 } 1019 } 1020 1021 static void 1022 acpi_rescan_capabilities(device_t self) 1023 { 1024 struct acpi_softc *sc = device_private(self); 1025 struct acpi_devnode *ad; 1026 ACPI_HANDLE tmp; 1027 ACPI_STATUS rv; 1028 1029 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1030 1031 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 1032 continue; 1033 1034 /* 1035 * Scan power resource capabilities. 1036 * 1037 * If any power states are supported, 1038 * at least _PR0 and _PR3 must be present. 1039 */ 1040 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 1041 1042 if (ACPI_SUCCESS(rv)) { 1043 ad->ad_flags |= ACPI_DEVICE_POWER; 1044 acpi_power_add(ad); 1045 } 1046 1047 /* 1048 * Scan wake-up capabilities. 1049 */ 1050 if (ad->ad_wakedev != NULL) { 1051 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 1052 acpi_wakedev_add(ad); 1053 } 1054 1055 /* 1056 * Scan docking stations. 1057 */ 1058 rv = AcpiGetHandle(ad->ad_handle, "_DCK", &tmp); 1059 1060 if (ACPI_SUCCESS(rv)) 1061 ad->ad_flags |= ACPI_DEVICE_DOCK; 1062 1063 /* 1064 * Scan devices that are ejectable. 1065 */ 1066 rv = AcpiGetHandle(ad->ad_handle, "_EJ0", &tmp); 1067 1068 if (ACPI_SUCCESS(rv)) 1069 ad->ad_flags |= ACPI_DEVICE_EJECT; 1070 } 1071 } 1072 1073 static int 1074 acpi_print(void *aux, const char *pnp) 1075 { 1076 struct acpi_attach_args *aa = aux; 1077 struct acpi_devnode *ad; 1078 const char *hid, *uid; 1079 ACPI_DEVICE_INFO *di; 1080 1081 ad = aa->aa_node; 1082 di = ad->ad_devinfo; 1083 1084 hid = di->HardwareId.String; 1085 uid = di->UniqueId.String; 1086 1087 if (pnp != NULL) { 1088 1089 if (di->Type != ACPI_TYPE_DEVICE) { 1090 1091 aprint_normal("%s (ACPI Object Type '%s') at %s", 1092 ad->ad_name, AcpiUtGetTypeName(ad->ad_type), pnp); 1093 1094 return UNCONF; 1095 } 1096 1097 if ((di->Valid & ACPI_VALID_HID) == 0 || hid == NULL) 1098 return 0; 1099 1100 aprint_normal("%s (%s) ", ad->ad_name, hid); 1101 acpi_print_dev(hid); 1102 aprint_normal("at %s", pnp); 1103 1104 return UNCONF; 1105 } 1106 1107 aprint_normal(" (%s", ad->ad_name); 1108 1109 if ((di->Valid & ACPI_VALID_HID) != 0 && hid != NULL) { 1110 1111 aprint_normal(", %s", hid); 1112 1113 if ((di->Valid & ACPI_VALID_UID) != 0 && uid != NULL) { 1114 1115 if (uid[0] == '\0') 1116 uid = "<null>"; 1117 1118 aprint_normal("-%s", uid); 1119 } 1120 } 1121 1122 aprint_normal(")"); 1123 1124 return UNCONF; 1125 } 1126 1127 /* 1128 * acpi_device_register -- 1129 * Called by the platform device_register() routine when 1130 * attaching devices. 1131 */ 1132 void 1133 acpi_device_register(device_t dev, void *v) 1134 { 1135 /* All we do here is set the devhandle in the device_t. */ 1136 device_t parent = device_parent(dev); 1137 ACPI_HANDLE hdl = NULL; 1138 1139 /* 1140 * aa_node is only valid if we attached to the "acpinodebus" 1141 * interface attribute. 1142 */ 1143 if (device_attached_to_iattr(dev, "acpinodebus")) { 1144 const struct acpi_attach_args *aa = v; 1145 hdl = aa->aa_node->ad_handle; 1146 } else if (device_is_a(parent, "pci")) { 1147 const struct pci_attach_args *pa = v; 1148 struct acpi_devnode *ad; 1149 u_int segment; 1150 1151 #ifdef __HAVE_PCI_GET_SEGMENT 1152 segment = pci_get_segment(pa->pa_pc); 1153 #else 1154 segment = 0; 1155 #endif /* __HAVE_PCI_GET_SEGMENT */ 1156 1157 ad = acpi_pcidev_find(segment, 1158 pa->pa_bus, pa->pa_device, pa->pa_function); 1159 if (ad == NULL || (hdl = ad->ad_handle) == NULL) { 1160 aprint_debug_dev(dev, "no matching ACPI node\n"); 1161 return; 1162 } 1163 } else { 1164 return; 1165 } 1166 KASSERT(hdl != NULL); 1167 1168 device_set_handle(dev, devhandle_from_acpi(hdl)); 1169 } 1170 1171 /* 1172 * Notify. 1173 */ 1174 static void 1175 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1176 { 1177 struct acpi_softc *sc = acpi_softc; 1178 struct acpi_devnode *ad; 1179 1180 KASSERT(sc != NULL); 1181 KASSERT(aux == NULL); 1182 KASSERT(acpi_active != 0); 1183 1184 if (acpi_suspended != 0) 1185 return; 1186 1187 /* 1188 * System: 0x00 - 0x7F. 1189 * Device: 0x80 - 0xFF. 1190 */ 1191 switch (event) { 1192 1193 case ACPI_NOTIFY_BUS_CHECK: 1194 case ACPI_NOTIFY_DEVICE_CHECK: 1195 case ACPI_NOTIFY_DEVICE_WAKE: 1196 case ACPI_NOTIFY_EJECT_REQUEST: 1197 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1198 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1199 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1200 case ACPI_NOTIFY_POWER_FAULT: 1201 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1202 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1203 case ACPI_NOTIFY_RESERVED: 1204 case ACPI_NOTIFY_LOCALITY_UPDATE: 1205 break; 1206 } 1207 1208 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1209 "%s (%p)\n", event, acpi_name(handle), handle)); 1210 1211 /* 1212 * We deliver notifications only to drivers 1213 * that have been successfully attached and 1214 * that have registered a handler with us. 1215 * The opaque pointer is always the device_t. 1216 */ 1217 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1218 1219 if (ad->ad_device == NULL) 1220 continue; 1221 1222 if (ad->ad_notify == NULL) 1223 continue; 1224 1225 if (ad->ad_handle != handle) 1226 continue; 1227 1228 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1229 1230 return; 1231 } 1232 1233 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1234 "for %s (%p)\n", event, acpi_name(handle), handle); 1235 } 1236 1237 bool 1238 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1239 { 1240 struct acpi_softc *sc = acpi_softc; 1241 1242 KASSERT(sc != NULL); 1243 KASSERT(acpi_active != 0); 1244 1245 if (acpi_suspended != 0) 1246 goto fail; 1247 1248 if (ad == NULL || notify == NULL) 1249 goto fail; 1250 1251 ad->ad_notify = notify; 1252 1253 return true; 1254 1255 fail: 1256 aprint_error_dev(sc->sc_dev, "failed to register notify " 1257 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1258 1259 return false; 1260 } 1261 1262 void 1263 acpi_deregister_notify(struct acpi_devnode *ad) 1264 { 1265 1266 ad->ad_notify = NULL; 1267 } 1268 1269 /* 1270 * Fixed buttons. 1271 */ 1272 static void 1273 acpi_register_fixed_button(struct acpi_softc *sc, int event) 1274 { 1275 struct sysmon_pswitch *smpsw; 1276 ACPI_STATUS rv; 1277 int type; 1278 1279 switch (event) { 1280 1281 case ACPI_EVENT_POWER_BUTTON: 1282 1283 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1284 return; 1285 1286 type = PSWITCH_TYPE_POWER; 1287 smpsw = &sc->sc_smpsw_power; 1288 break; 1289 1290 case ACPI_EVENT_SLEEP_BUTTON: 1291 1292 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1293 return; 1294 1295 type = PSWITCH_TYPE_SLEEP; 1296 smpsw = &sc->sc_smpsw_sleep; 1297 break; 1298 1299 default: 1300 rv = AE_TYPE; 1301 goto fail; 1302 } 1303 1304 smpsw->smpsw_type = type; 1305 smpsw->smpsw_name = device_xname(sc->sc_dev); 1306 1307 if (sysmon_pswitch_register(smpsw) != 0) { 1308 rv = AE_ERROR; 1309 goto fail; 1310 } 1311 1312 AcpiClearEvent(event); 1313 1314 rv = AcpiInstallFixedEventHandler(event, 1315 acpi_fixed_button_handler, smpsw); 1316 1317 if (ACPI_FAILURE(rv)) { 1318 sysmon_pswitch_unregister(smpsw); 1319 goto fail; 1320 } 1321 1322 aprint_normal_dev(sc->sc_dev, "fixed %s button present\n", 1323 (type != PSWITCH_TYPE_SLEEP) ? "power" : "sleep"); 1324 1325 return; 1326 1327 fail: 1328 aprint_error_dev(sc->sc_dev, "failed to register " 1329 "fixed event %d: %s\n", event, AcpiFormatException(rv)); 1330 } 1331 1332 static void 1333 acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1334 { 1335 struct sysmon_pswitch *smpsw; 1336 ACPI_STATUS rv; 1337 1338 switch (event) { 1339 1340 case ACPI_EVENT_POWER_BUTTON: 1341 smpsw = &sc->sc_smpsw_power; 1342 1343 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1344 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1345 return; 1346 } 1347 1348 break; 1349 1350 case ACPI_EVENT_SLEEP_BUTTON: 1351 smpsw = &sc->sc_smpsw_sleep; 1352 1353 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1354 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1355 return; 1356 } 1357 1358 break; 1359 1360 default: 1361 rv = AE_TYPE; 1362 goto fail; 1363 } 1364 1365 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1366 1367 if (ACPI_SUCCESS(rv)) { 1368 sysmon_pswitch_unregister(smpsw); 1369 return; 1370 } 1371 1372 fail: 1373 aprint_error_dev(sc->sc_dev, "failed to deregister " 1374 "fixed event: %s\n", AcpiFormatException(rv)); 1375 } 1376 1377 static uint32_t 1378 acpi_fixed_button_handler(void *context) 1379 { 1380 static const int handler = OSL_NOTIFY_HANDLER; 1381 struct sysmon_pswitch *smpsw = context; 1382 1383 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1384 1385 return ACPI_INTERRUPT_HANDLED; 1386 } 1387 1388 static void 1389 acpi_fixed_button_pressed(void *context) 1390 { 1391 struct sysmon_pswitch *smpsw = context; 1392 1393 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1394 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1395 "power" : "sleep")); 1396 1397 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1398 } 1399 1400 /* 1401 * Sleep. 1402 */ 1403 static void 1404 acpi_sleep_init(struct acpi_softc *sc) 1405 { 1406 uint8_t a, b, i; 1407 ACPI_STATUS rv; 1408 1409 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1410 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1411 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1412 1413 /* 1414 * Evaluate supported sleep states. 1415 */ 1416 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1417 1418 rv = AcpiGetSleepTypeData(i, &a, &b); 1419 1420 if (ACPI_SUCCESS(rv)) 1421 sc->sc_sleepstates |= __BIT(i); 1422 } 1423 } 1424 1425 /* 1426 * Must be called with interrupts enabled. 1427 */ 1428 void 1429 acpi_enter_sleep_state(int state) 1430 { 1431 struct acpi_softc *sc = acpi_softc; 1432 ACPI_STATUS rv; 1433 1434 if (acpi_softc == NULL) 1435 return; 1436 1437 if (state == sc->sc_sleepstate) 1438 return; 1439 1440 if (state < ACPI_STATE_S0 || state > ACPI_STATE_S5) 1441 return; 1442 1443 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1444 1445 switch (state) { 1446 1447 case ACPI_STATE_S0: 1448 sc->sc_sleepstate = ACPI_STATE_S0; 1449 return; 1450 1451 case ACPI_STATE_S1: 1452 case ACPI_STATE_S2: 1453 case ACPI_STATE_S3: 1454 case ACPI_STATE_S4: 1455 1456 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1457 aprint_error_dev(sc->sc_dev, "sleep state " 1458 "S%d is not available\n", state); 1459 return; 1460 } 1461 1462 /* 1463 * Evaluate the _TTS method. This should be done before 1464 * pmf_system_suspend(9) and the evaluation of _PTS. 1465 * We should also re-evaluate this once we return to 1466 * S0 or if we abort the sleep state transition in the 1467 * middle (see ACPI 3.0, section 7.3.6). In reality, 1468 * however, the _TTS method is seldom seen in the field. 1469 */ 1470 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1471 1472 if (ACPI_SUCCESS(rv)) 1473 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1474 1475 if (state != ACPI_STATE_S1 && 1476 pmf_system_suspend(PMF_Q_NONE) != true) { 1477 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1478 break; 1479 } 1480 1481 /* 1482 * This will evaluate the _PTS and _SST methods, 1483 * but unlike the documentation claims, not _GTS, 1484 * which is evaluated in AcpiEnterSleepState(). 1485 * This must be called with interrupts enabled. 1486 */ 1487 rv = AcpiEnterSleepStatePrep(state); 1488 1489 if (ACPI_FAILURE(rv)) { 1490 aprint_error_dev(sc->sc_dev, "failed to prepare " 1491 "S%d: %s\n", state, AcpiFormatException(rv)); 1492 break; 1493 } 1494 1495 /* 1496 * After the _PTS method has been evaluated, we can 1497 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1498 */ 1499 acpi_wakedev_commit(sc, state); 1500 1501 sc->sc_sleepstate = state; 1502 1503 if (state == ACPI_STATE_S1) { 1504 1505 /* 1506 * Before the transition to S1, CPU caches 1507 * must be flushed (see ACPI 4.0, 7.3.4.2). 1508 * 1509 * Note that interrupts must be off before 1510 * calling AcpiEnterSleepState(). Conversely, 1511 * AcpiLeaveSleepState() should always be 1512 * called with interrupts enabled. 1513 */ 1514 acpi_md_OsDisableInterrupt(); 1515 1516 ACPI_FLUSH_CPU_CACHE(); 1517 rv = AcpiEnterSleepState(state); 1518 1519 if (ACPI_FAILURE(rv)) 1520 aprint_error_dev(sc->sc_dev, "failed to " 1521 "enter S1: %s\n", AcpiFormatException(rv)); 1522 1523 /* 1524 * Clear fixed events and disable all GPEs before 1525 * interrupts are enabled. 1526 */ 1527 AcpiClearEvent(ACPI_EVENT_PMTIMER); 1528 AcpiClearEvent(ACPI_EVENT_GLOBAL); 1529 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON); 1530 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON); 1531 AcpiClearEvent(ACPI_EVENT_RTC); 1532 #if (!ACPI_REDUCED_HARDWARE) 1533 AcpiHwDisableAllGpes(); 1534 #endif 1535 1536 acpi_md_OsEnableInterrupt(); 1537 rv = AcpiLeaveSleepState(state); 1538 1539 } else { 1540 1541 (void)acpi_md_sleep(state); 1542 1543 if (state == ACPI_STATE_S4) 1544 AcpiEnable(); 1545 1546 (void)pmf_system_bus_resume(PMF_Q_NONE); 1547 (void)AcpiLeaveSleepState(state); 1548 (void)AcpiSetFirmwareWakingVector(0, 0); 1549 (void)pmf_system_resume(PMF_Q_NONE); 1550 } 1551 1552 /* 1553 * No wake GPEs should be enabled at runtime. 1554 */ 1555 acpi_wakedev_commit(sc, ACPI_STATE_S0); 1556 break; 1557 1558 case ACPI_STATE_S5: 1559 1560 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1561 1562 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1563 1564 if (ACPI_FAILURE(rv)) { 1565 aprint_error_dev(sc->sc_dev, "failed to prepare " 1566 "S%d: %s\n", state, AcpiFormatException(rv)); 1567 break; 1568 } 1569 1570 (void)AcpiDisableAllGpes(); 1571 1572 DELAY(1000000); 1573 1574 sc->sc_sleepstate = state; 1575 acpi_md_OsDisableInterrupt(); 1576 1577 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1578 1579 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1580 1581 break; 1582 } 1583 1584 sc->sc_sleepstate = ACPI_STATE_S0; 1585 1586 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1587 } 1588 1589 /* 1590 * Sysctl. 1591 */ 1592 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1593 { 1594 const struct sysctlnode *rnode, *snode; 1595 int err; 1596 1597 err = sysctl_createv(clog, 0, NULL, &rnode, 1598 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1599 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1600 NULL, 0, NULL, 0, 1601 CTL_HW, CTL_CREATE, CTL_EOL); 1602 1603 if (err != 0) 1604 return; 1605 1606 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1607 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1608 "root", SYSCTL_DESCR("ACPI root pointer"), 1609 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1610 CTL_CREATE, CTL_EOL); 1611 1612 err = sysctl_createv(clog, 0, &rnode, &snode, 1613 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1614 "sleep", SYSCTL_DESCR("ACPI sleep"), 1615 NULL, 0, NULL, 0, 1616 CTL_CREATE, CTL_EOL); 1617 1618 if (err != 0) 1619 return; 1620 1621 (void)sysctl_createv(NULL, 0, &snode, NULL, 1622 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1623 "state", SYSCTL_DESCR("System sleep state"), 1624 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1625 CTL_CREATE, CTL_EOL); 1626 1627 (void)sysctl_createv(NULL, 0, &snode, NULL, 1628 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1629 "states", SYSCTL_DESCR("Supported sleep states"), 1630 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1631 CTL_CREATE, CTL_EOL); 1632 1633 err = sysctl_createv(clog, 0, &rnode, &rnode, 1634 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1635 "stat", SYSCTL_DESCR("ACPI statistics"), 1636 NULL, 0, NULL, 0, 1637 CTL_CREATE, CTL_EOL); 1638 1639 if (err != 0) 1640 return; 1641 1642 (void)sysctl_createv(clog, 0, &rnode, NULL, 1643 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1644 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1645 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1646 CTL_CREATE, CTL_EOL); 1647 1648 (void)sysctl_createv(clog, 0, &rnode, NULL, 1649 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1650 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1651 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1652 CTL_CREATE, CTL_EOL); 1653 1654 (void)sysctl_createv(clog, 0, &rnode, NULL, 1655 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1656 "fixed", SYSCTL_DESCR("Number of fixed events"), 1657 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1658 CTL_CREATE, CTL_EOL); 1659 1660 (void)sysctl_createv(clog, 0, &rnode, NULL, 1661 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1662 "method", SYSCTL_DESCR("Number of methods executed"), 1663 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1664 CTL_CREATE, CTL_EOL); 1665 1666 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1667 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1668 } 1669 1670 static int 1671 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1672 { 1673 struct sysctlnode node; 1674 uint64_t t; 1675 int err, i; 1676 1677 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1678 t += AcpiFixedEventCount[i]; 1679 1680 node = *rnode; 1681 node.sysctl_data = &t; 1682 1683 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1684 1685 if (err || newp == NULL) 1686 return err; 1687 1688 return 0; 1689 } 1690 1691 static int 1692 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1693 { 1694 struct acpi_softc *sc = acpi_softc; 1695 struct sysctlnode node; 1696 int err, t; 1697 1698 if (acpi_softc == NULL) 1699 return ENOSYS; 1700 1701 node = *rnode; 1702 t = sc->sc_sleepstate; 1703 node.sysctl_data = &t; 1704 1705 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1706 1707 if (err || newp == NULL) 1708 return err; 1709 1710 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1711 return EINVAL; 1712 1713 acpi_enter_sleep_state(t); 1714 1715 return 0; 1716 } 1717 1718 static int 1719 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1720 { 1721 struct acpi_softc *sc = acpi_softc; 1722 struct sysctlnode node; 1723 char t[3 * 6 + 1]; 1724 int err; 1725 1726 if (acpi_softc == NULL) 1727 return ENOSYS; 1728 1729 (void)memset(t, '\0', sizeof(t)); 1730 1731 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1732 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1733 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1734 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1735 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1736 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1737 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1738 1739 node = *rnode; 1740 node.sysctl_data = &t; 1741 1742 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1743 1744 if (err || newp == NULL) 1745 return err; 1746 1747 return 0; 1748 } 1749 1750 /* 1751 * Tables. 1752 */ 1753 ACPI_PHYSICAL_ADDRESS 1754 acpi_OsGetRootPointer(void) 1755 { 1756 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1757 1758 /* 1759 * We let MD code handle this since there are multiple ways to do it: 1760 * 1761 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1762 * 1763 * IA-64: Use the EFI. 1764 */ 1765 PhysicalAddress = acpi_md_OsGetRootPointer(); 1766 1767 if (acpi_root_pointer == 0) 1768 acpi_root_pointer = PhysicalAddress; 1769 1770 return PhysicalAddress; 1771 } 1772 1773 static ACPI_TABLE_HEADER * 1774 acpi_map_rsdt(void) 1775 { 1776 ACPI_PHYSICAL_ADDRESS paddr; 1777 ACPI_TABLE_RSDP *rsdp; 1778 1779 paddr = AcpiOsGetRootPointer(); 1780 1781 if (paddr == 0) 1782 return NULL; 1783 1784 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1785 1786 if (rsdp == NULL) 1787 return NULL; 1788 1789 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1790 paddr = rsdp->XsdtPhysicalAddress; 1791 else 1792 paddr = rsdp->RsdtPhysicalAddress; 1793 1794 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1795 1796 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1797 } 1798 1799 /* 1800 * XXX: Refactor to be a generic function that unmaps tables. 1801 */ 1802 static void 1803 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1804 { 1805 1806 if (rsdt == NULL) 1807 return; 1808 1809 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1810 } 1811 1812 /* 1813 * XXX: Refactor to be a generic function that maps tables. 1814 */ 1815 ACPI_STATUS 1816 acpi_madt_map(void) 1817 { 1818 ACPI_STATUS rv; 1819 1820 if (madt_header != NULL) 1821 return AE_ALREADY_EXISTS; 1822 1823 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); 1824 1825 if (ACPI_FAILURE(rv)) 1826 return rv; 1827 1828 return AE_OK; 1829 } 1830 1831 void 1832 acpi_madt_unmap(void) 1833 { 1834 madt_header = NULL; 1835 } 1836 1837 ACPI_STATUS 1838 acpi_gtdt_map(void) 1839 { 1840 ACPI_STATUS rv; 1841 1842 if (gtdt_header != NULL) 1843 return AE_ALREADY_EXISTS; 1844 1845 rv = AcpiGetTable(ACPI_SIG_GTDT, 1, >dt_header); 1846 1847 if (ACPI_FAILURE(rv)) 1848 return rv; 1849 1850 return AE_OK; 1851 } 1852 1853 void 1854 acpi_gtdt_unmap(void) 1855 { 1856 gtdt_header = NULL; 1857 } 1858 1859 /* 1860 * XXX: Refactor to be a generic function that walks tables. 1861 */ 1862 void 1863 acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) 1864 { 1865 ACPI_SUBTABLE_HEADER *hdrp; 1866 char *madtend, *where; 1867 1868 madtend = (char *)madt_header + madt_header->Length; 1869 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); 1870 1871 while (where < madtend) { 1872 1873 hdrp = (ACPI_SUBTABLE_HEADER *)where; 1874 1875 if (hdrp->Length == 0 || ACPI_FAILURE(func(hdrp, aux))) 1876 break; 1877 1878 where += hdrp->Length; 1879 } 1880 } 1881 1882 void 1883 acpi_gtdt_walk(ACPI_STATUS (*func)(ACPI_GTDT_HEADER *, void *), void *aux) 1884 { 1885 ACPI_GTDT_HEADER *hdrp; 1886 char *gtdtend, *where; 1887 1888 gtdtend = (char *)gtdt_header + gtdt_header->Length; 1889 where = (char *)gtdt_header + sizeof (ACPI_TABLE_GTDT); 1890 1891 while (where < gtdtend) { 1892 1893 hdrp = (ACPI_GTDT_HEADER *)where; 1894 1895 if (hdrp->Length == 0 || ACPI_FAILURE(func(hdrp, aux))) 1896 break; 1897 1898 where += hdrp->Length; 1899 } 1900 } 1901 1902 /* 1903 * Miscellaneous. 1904 */ 1905 static bool 1906 acpi_is_scope(struct acpi_devnode *ad) 1907 { 1908 int i; 1909 1910 /* 1911 * Return true if the node is a root scope. 1912 */ 1913 if (ad->ad_parent == NULL) 1914 return false; 1915 1916 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1917 return false; 1918 1919 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1920 1921 if (acpi_scopes[i] == NULL) 1922 continue; 1923 1924 if (ad->ad_handle == acpi_scopes[i]) 1925 return true; 1926 } 1927 1928 return false; 1929 } 1930 1931 bool 1932 acpi_device_present(ACPI_HANDLE handle) 1933 { 1934 ACPI_STATUS rv; 1935 ACPI_INTEGER sta; 1936 1937 rv = acpi_eval_integer(handle, "_STA", &sta); 1938 1939 if (ACPI_FAILURE(rv)) { 1940 /* No _STA method -> must be there */ 1941 return rv == AE_NOT_FOUND; 1942 } 1943 1944 return (sta & ACPI_STA_OK) == ACPI_STA_OK; 1945 } 1946 1947 /* 1948 * ACPIVERBOSE. 1949 */ 1950 void 1951 acpi_load_verbose(void) 1952 { 1953 1954 if (acpi_verbose_loaded == 0) 1955 module_autoload("acpiverbose", MODULE_CLASS_MISC); 1956 } 1957 1958 void 1959 acpi_print_verbose_stub(struct acpi_softc *sc) 1960 { 1961 1962 acpi_load_verbose(); 1963 1964 if (acpi_verbose_loaded != 0) 1965 acpi_print_verbose(sc); 1966 } 1967 1968 void 1969 acpi_print_dev_stub(const char *pnpstr) 1970 { 1971 1972 acpi_load_verbose(); 1973 1974 if (acpi_verbose_loaded != 0) 1975 acpi_print_dev(pnpstr); 1976 } 1977 1978 MALLOC_DECLARE(M_ACPI); /* XXX: ACPI_ACTIVATE_DEV should use kmem(9). */ 1979 1980 /* 1981 * ACPI_ACTIVATE_DEV. 1982 */ 1983 static void 1984 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 1985 { 1986 1987 #ifndef ACPI_ACTIVATE_DEV 1988 return; 1989 } 1990 #else 1991 static const int valid = ACPI_VALID_HID; 1992 ACPI_DEVICE_INFO *newdi; 1993 ACPI_STATUS rv; 1994 1995 1996 /* 1997 * If the device is valid and present, 1998 * but not enabled, try to activate it. 1999 */ 2000 if (((*di)->Valid & valid) != valid) 2001 return; 2002 2003 if (!acpi_device_present(handle)) 2004 return; 2005 2006 rv = acpi_allocate_resources(handle); 2007 2008 if (ACPI_FAILURE(rv)) 2009 goto fail; 2010 2011 rv = AcpiGetObjectInfo(handle, &newdi); 2012 2013 if (ACPI_FAILURE(rv)) 2014 goto fail; 2015 2016 ACPI_FREE(*di); 2017 *di = newdi; 2018 2019 aprint_verbose_dev(acpi_softc->sc_dev, 2020 "%s activated\n", (*di)->HardwareId.String); 2021 2022 return; 2023 2024 fail: 2025 aprint_error_dev(acpi_softc->sc_dev, "failed to " 2026 "activate %s\n", (*di)->HardwareId.String); 2027 } 2028 2029 /* 2030 * XXX: This very incomplete. 2031 */ 2032 ACPI_STATUS 2033 acpi_allocate_resources(ACPI_HANDLE handle) 2034 { 2035 ACPI_BUFFER bufp, bufc, bufn; 2036 ACPI_RESOURCE *resp, *resc, *resn; 2037 ACPI_RESOURCE_IRQ *irq; 2038 #if 0 2039 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 2040 #endif 2041 ACPI_STATUS rv; 2042 uint delta; 2043 2044 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 2045 if (ACPI_FAILURE(rv)) 2046 goto out; 2047 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 2048 if (ACPI_FAILURE(rv)) { 2049 goto out1; 2050 } 2051 2052 bufn.Length = 1000; 2053 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 2054 resp = bufp.Pointer; 2055 resc = bufc.Pointer; 2056 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 2057 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 2058 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 2059 resp = ACPI_NEXT_RESOURCE(resp); 2060 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 2061 break; 2062 /* Found identical Id */ 2063 resn->Type = resc->Type; 2064 switch (resc->Type) { 2065 case ACPI_RESOURCE_TYPE_IRQ: 2066 memcpy(&resn->Data, &resp->Data, 2067 sizeof(ACPI_RESOURCE_IRQ)); 2068 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 2069 irq->Interrupts[0] = 2070 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 2071 Interrupts[irq->InterruptCount-1]; 2072 irq->InterruptCount = 1; 2073 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 2074 break; 2075 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 2076 memcpy(&resn->Data, &resp->Data, 2077 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 2078 #if 0 2079 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 2080 /* 2081 * XXX: Not duplicating the interrupt logic above 2082 * because its not clear what it accomplishes. 2083 */ 2084 xirq->Interrupts[0] = 2085 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 2086 Interrupts[irq->NumberOfInterrupts-1]; 2087 xirq->NumberOfInterrupts = 1; 2088 #endif 2089 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 2090 break; 2091 case ACPI_RESOURCE_TYPE_IO: 2092 memcpy(&resn->Data, &resp->Data, 2093 sizeof(ACPI_RESOURCE_IO)); 2094 resn->Length = resp->Length; 2095 break; 2096 default: 2097 aprint_error_dev(acpi_softc->sc_dev, 2098 "%s: invalid type %u\n", __func__, resc->Type); 2099 rv = AE_BAD_DATA; 2100 goto out2; 2101 } 2102 resc = ACPI_NEXT_RESOURCE(resc); 2103 resn = ACPI_NEXT_RESOURCE(resn); 2104 resp = ACPI_NEXT_RESOURCE(resp); 2105 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 2106 if (delta >= 2107 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 2108 bufn.Length *= 2; 2109 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 2110 M_ACPI, M_WAITOK); 2111 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 2112 delta); 2113 } 2114 } 2115 2116 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 2117 aprint_error_dev(acpi_softc->sc_dev, 2118 "%s: resc not exhausted\n", __func__); 2119 rv = AE_BAD_DATA; 2120 goto out3; 2121 } 2122 2123 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 2124 rv = AcpiSetCurrentResources(handle, &bufn); 2125 2126 if (ACPI_FAILURE(rv)) 2127 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 2128 "resources: %s\n", __func__, AcpiFormatException(rv)); 2129 2130 out3: 2131 free(bufn.Pointer, M_ACPI); 2132 out2: 2133 ACPI_FREE(bufc.Pointer); 2134 out1: 2135 ACPI_FREE(bufp.Pointer); 2136 out: 2137 return rv; 2138 } 2139 2140 #endif /* ACPI_ACTIVATE_DEV */ 2141