1 /* $NetBSD: acpi.c,v 1.298 2022/05/31 20:28:57 mrg 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 1.298 2022/05/31 20:28:57 mrg 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 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) { 640 641 if (ad->ad_device == child) 642 ad->ad_device = NULL; 643 } 644 } 645 646 static bool 647 acpi_suspend(device_t dv, const pmf_qual_t *qual) 648 { 649 650 acpi_suspended = 1; 651 652 return true; 653 } 654 655 static bool 656 acpi_resume(device_t dv, const pmf_qual_t *qual) 657 { 658 659 acpi_suspended = 0; 660 661 return true; 662 } 663 664 /* 665 * Namespace scan. 666 */ 667 static void 668 acpi_build_tree(struct acpi_softc *sc) 669 { 670 struct acpi_walkcontext awc; 671 672 /* 673 * Get the root scope handles. 674 */ 675 KASSERT(__arraycount(acpi_scopes) == 4); 676 677 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 678 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 679 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 680 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 681 682 /* 683 * Make the root node. 684 */ 685 awc.aw_sc = sc; 686 awc.aw_parent = NULL; 687 688 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 689 690 KASSERT(sc->sc_root == NULL); 691 KASSERT(awc.aw_parent != NULL); 692 693 sc->sc_root = awc.aw_parent; 694 695 /* 696 * Build the internal namespace. 697 */ 698 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 699 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 700 701 #if NPCI > 0 702 /* 703 * Scan the internal namespace. 704 */ 705 (void)acpi_pcidev_scan(sc->sc_root); 706 #endif 707 } 708 709 static void 710 acpi_config_tree(struct acpi_softc *sc) 711 { 712 /* 713 * Assign bus_dma resources 714 */ 715 acpi_config_dma(sc); 716 717 /* 718 * Configure all everything found "at acpi?". 719 */ 720 (void)acpi_rescan(sc->sc_dev, NULL, NULL); 721 722 /* 723 * Update GPE information. 724 * 725 * Note that this must be called after 726 * all GPE handlers have been installed. 727 */ 728 (void)AcpiUpdateAllGpes(); 729 730 /* 731 * Defer rest of the configuration. 732 */ 733 (void)config_defer(sc->sc_dev, acpi_rescan_capabilities); 734 } 735 736 // XXXNH? 737 static void 738 acpi_config_dma(struct acpi_softc *sc) 739 { 740 struct acpi_devnode *ad; 741 742 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) { 743 744 if (ad->ad_device != NULL) 745 continue; 746 747 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 748 continue; 749 750 ad->ad_dmat = acpi_get_dma_tag(sc, ad); 751 ad->ad_dmat64 = acpi_get_dma64_tag(sc, ad); 752 } 753 } 754 755 static ACPI_STATUS 756 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 757 void *context, void **status) 758 { 759 struct acpi_walkcontext *awc = context; 760 struct acpi_softc *sc = awc->aw_sc; 761 struct acpi_devnode *ad; 762 ACPI_DEVICE_INFO *devinfo; 763 ACPI_OBJECT_TYPE type; 764 ACPI_STATUS rv; 765 766 rv = AcpiGetObjectInfo(handle, &devinfo); 767 768 if (ACPI_FAILURE(rv)) 769 return AE_OK; /* Do not terminate the walk. */ 770 771 type = devinfo->Type; 772 773 switch (type) { 774 775 case ACPI_TYPE_DEVICE: 776 acpi_activate_device(handle, &devinfo); 777 /* FALLTHROUGH */ 778 779 case ACPI_TYPE_PROCESSOR: 780 case ACPI_TYPE_THERMAL: 781 case ACPI_TYPE_POWER: 782 783 ad = kmem_zalloc(sizeof(*ad), KM_SLEEP); 784 785 ad->ad_device = NULL; 786 ad->ad_notify = NULL; 787 ad->ad_pciinfo = NULL; 788 ad->ad_wakedev = NULL; 789 790 ad->ad_type = type; 791 ad->ad_handle = handle; 792 ad->ad_devinfo = devinfo; 793 794 ad->ad_root = sc->sc_dev; 795 ad->ad_parent = awc->aw_parent; 796 797 acpi_match_node_init(ad); 798 acpi_make_name(ad, devinfo->Name); 799 800 /* 801 * Identify wake GPEs from the _PRW. Note that 802 * AcpiUpdateAllGpes() must be called afterwards. 803 */ 804 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) 805 acpi_wakedev_init(ad); 806 807 SIMPLEQ_INIT(&ad->ad_child_head); 808 SIMPLEQ_INSERT_TAIL(&sc->sc_head, ad, ad_list); 809 810 if (ad->ad_parent != NULL) { 811 812 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 813 ad, ad_child_list); 814 } 815 816 awc->aw_parent = ad; 817 break; 818 819 default: 820 ACPI_FREE(devinfo); 821 break; 822 } 823 824 return AE_OK; 825 } 826 827 static ACPI_STATUS 828 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 829 void *context, void **status) 830 { 831 struct acpi_walkcontext *awc = context; 832 833 KASSERT(awc != NULL); 834 KASSERT(awc->aw_parent != NULL); 835 836 if (handle == awc->aw_parent->ad_handle) 837 awc->aw_parent = awc->aw_parent->ad_parent; 838 839 return AE_OK; 840 } 841 842 static void 843 acpi_make_name(struct acpi_devnode *ad, uint32_t name) 844 { 845 ACPI_NAME_UNION *anu; 846 int clear, i; 847 848 anu = (ACPI_NAME_UNION *)&name; 849 ad->ad_name[4] = '\0'; 850 851 for (i = 3, clear = 0; i >= 0; i--) { 852 853 if (clear == 0 && anu->Ascii[i] == '_') 854 ad->ad_name[i] = '\0'; 855 else { 856 ad->ad_name[i] = anu->Ascii[i]; 857 clear = 1; 858 } 859 } 860 861 if (ad->ad_name[0] == '\0') 862 ad->ad_name[0] = '_'; 863 } 864 865 bus_dma_tag_t 866 acpi_default_dma_tag(struct acpi_softc *sc, struct acpi_devnode *ad) 867 { 868 return sc->sc_dmat; 869 } 870 __weak_alias(acpi_get_dma_tag,acpi_default_dma_tag); 871 872 bus_dma_tag_t 873 acpi_default_dma64_tag(struct acpi_softc *sc, struct acpi_devnode *ad) 874 { 875 return sc->sc_dmat64; 876 } 877 __weak_alias(acpi_get_dma64_tag,acpi_default_dma64_tag); 878 879 pci_chipset_tag_t 880 acpi_default_pci_chipset_tag(struct acpi_softc *sc, int seg, int bbn) 881 { 882 return NULL; 883 } 884 __weak_alias(acpi_get_pci_chipset_tag,acpi_default_pci_chipset_tag); 885 886 /* 887 * Device attachment. 888 */ 889 static int 890 acpi_rescan(device_t self, const char *ifattr, const int *locators) 891 { 892 struct acpi_softc *sc = device_private(self); 893 struct acpi_attach_args aa; 894 895 /* 896 * Try to attach hpet(4) first via a specific table. 897 */ 898 aa.aa_memt = sc->sc_memt; 899 900 if (ifattr_match(ifattr, "acpihpetbus") && sc->sc_hpet == NULL) { 901 sc->sc_hpet = config_found(sc->sc_dev, &aa, NULL, 902 CFARGS(.iattr = "acpihpetbus")); 903 } 904 905 /* 906 * A two-pass scan for acpinodebus. 907 */ 908 if (ifattr_match(ifattr, "acpinodebus")) { 909 acpi_rescan_early(sc); 910 acpi_rescan_nodes(sc); 911 } 912 913 /* 914 * Attach APM emulation and acpiwdrt(4). 915 */ 916 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) { 917 sc->sc_apmbus = config_found(sc->sc_dev, NULL, NULL, 918 CFARGS(.iattr = "acpiapmbus")); 919 } 920 921 if (ifattr_match(ifattr, "acpiwdrtbus") && sc->sc_wdrt == NULL) { 922 sc->sc_wdrt = config_found(sc->sc_dev, NULL, NULL, 923 CFARGS(.iattr = "acpiwdrtbus")); 924 } 925 926 return 0; 927 } 928 929 static void 930 acpi_rescan_early(struct acpi_softc *sc) 931 { 932 struct acpi_attach_args aa; 933 struct acpi_devnode *ad; 934 935 /* 936 * First scan for devices such as acpiec(4) that 937 * should be always attached before anything else. 938 * We want these devices to attach regardless of 939 * the device status and other restrictions. 940 */ 941 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) { 942 943 if (ad->ad_device != NULL) 944 continue; 945 946 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 947 continue; 948 949 if (acpi_match_hid(ad->ad_devinfo, acpi_early_ids) == 0) 950 continue; 951 952 KASSERT(ad->ad_handle != NULL); 953 954 aa.aa_node = ad; 955 aa.aa_iot = sc->sc_iot; 956 aa.aa_memt = sc->sc_memt; 957 if (ad->ad_pciinfo != NULL) { 958 aa.aa_pc = ad->ad_pciinfo->ap_pc; 959 aa.aa_pciflags = sc->sc_pciflags; 960 } 961 aa.aa_ic = sc->sc_ic; 962 aa.aa_dmat = ad->ad_dmat; 963 aa.aa_dmat64 = ad->ad_dmat64; 964 965 ad->ad_device = config_found(sc->sc_dev, &aa, acpi_print, 966 CFARGS(.iattr = "acpinodebus", 967 .devhandle = devhandle_from_acpi(devhandle_invalid(), 968 ad->ad_handle))); 969 } 970 } 971 972 static void 973 acpi_rescan_nodes(struct acpi_softc *sc) 974 { 975 const char * const hpet_ids[] = { "PNP0103", NULL }; 976 struct acpi_attach_args aa; 977 struct acpi_devnode *ad; 978 ACPI_DEVICE_INFO *di; 979 980 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) { 981 982 if (ad->ad_device != NULL) 983 continue; 984 985 /* 986 * There is a bug in ACPICA: it defines the type 987 * of the scopes incorrectly for its own reasons. 988 */ 989 if (acpi_is_scope(ad) != false) 990 continue; 991 992 di = ad->ad_devinfo; 993 994 /* 995 * We only attach devices which are present, enabled, and 996 * functioning properly. However, if a device is enabled, 997 * it is decoding resources and we should claim these, 998 * if possible. This requires changes to bus_space(9). 999 */ 1000 if (di->Type == ACPI_TYPE_DEVICE && 1001 !acpi_device_present(ad->ad_handle)) { 1002 continue; 1003 } 1004 1005 if (di->Type == ACPI_TYPE_POWER) 1006 continue; 1007 1008 if (di->Type == ACPI_TYPE_PROCESSOR) 1009 continue; 1010 1011 if (acpi_match_hid(di, acpi_early_ids) != 0) 1012 continue; 1013 1014 if (acpi_match_hid(di, acpi_ignored_ids) != 0) 1015 continue; 1016 1017 if (acpi_match_hid(di, hpet_ids) != 0 && sc->sc_hpet != NULL) 1018 continue; 1019 1020 KASSERT(ad->ad_handle != NULL); 1021 1022 aa.aa_node = ad; 1023 aa.aa_iot = sc->sc_iot; 1024 aa.aa_memt = sc->sc_memt; 1025 if (ad->ad_pciinfo != NULL) { 1026 aa.aa_pc = ad->ad_pciinfo->ap_pc; 1027 aa.aa_pciflags = sc->sc_pciflags; 1028 } 1029 aa.aa_ic = sc->sc_ic; 1030 aa.aa_dmat = ad->ad_dmat; 1031 aa.aa_dmat64 = ad->ad_dmat64; 1032 1033 ad->ad_device = config_found(sc->sc_dev, &aa, acpi_print, 1034 CFARGS(.iattr = "acpinodebus", 1035 .devhandle = devhandle_from_acpi(devhandle_invalid(), 1036 ad->ad_handle))); 1037 } 1038 } 1039 1040 static void 1041 acpi_rescan_capabilities(device_t self) 1042 { 1043 struct acpi_softc *sc = device_private(self); 1044 struct acpi_devnode *ad; 1045 ACPI_HANDLE tmp; 1046 ACPI_STATUS rv; 1047 1048 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) { 1049 1050 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 1051 continue; 1052 1053 /* 1054 * Scan power resource capabilities. 1055 * 1056 * If any power states are supported, 1057 * at least _PR0 and _PR3 must be present. 1058 */ 1059 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 1060 1061 if (ACPI_SUCCESS(rv)) { 1062 ad->ad_flags |= ACPI_DEVICE_POWER; 1063 acpi_power_add(ad); 1064 } 1065 1066 /* 1067 * Scan wake-up capabilities. 1068 */ 1069 if (ad->ad_wakedev != NULL) { 1070 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 1071 acpi_wakedev_add(ad); 1072 } 1073 1074 /* 1075 * Scan docking stations. 1076 */ 1077 rv = AcpiGetHandle(ad->ad_handle, "_DCK", &tmp); 1078 1079 if (ACPI_SUCCESS(rv)) 1080 ad->ad_flags |= ACPI_DEVICE_DOCK; 1081 1082 /* 1083 * Scan devices that are ejectable. 1084 */ 1085 rv = AcpiGetHandle(ad->ad_handle, "_EJ0", &tmp); 1086 1087 if (ACPI_SUCCESS(rv)) 1088 ad->ad_flags |= ACPI_DEVICE_EJECT; 1089 } 1090 } 1091 1092 static int 1093 acpi_print(void *aux, const char *pnp) 1094 { 1095 struct acpi_attach_args *aa = aux; 1096 struct acpi_devnode *ad; 1097 const char *hid, *uid; 1098 ACPI_DEVICE_INFO *di; 1099 1100 ad = aa->aa_node; 1101 di = ad->ad_devinfo; 1102 1103 hid = di->HardwareId.String; 1104 uid = di->UniqueId.String; 1105 1106 if (pnp != NULL) { 1107 1108 if (di->Type != ACPI_TYPE_DEVICE) { 1109 1110 aprint_normal("%s (ACPI Object Type '%s') at %s", 1111 ad->ad_name, AcpiUtGetTypeName(ad->ad_type), pnp); 1112 1113 return UNCONF; 1114 } 1115 1116 if ((di->Valid & ACPI_VALID_HID) == 0 || hid == NULL) 1117 return 0; 1118 1119 aprint_normal("%s (%s) ", ad->ad_name, hid); 1120 acpi_print_dev(hid); 1121 aprint_normal("at %s", pnp); 1122 1123 return UNCONF; 1124 } 1125 1126 aprint_normal(" (%s", ad->ad_name); 1127 1128 if ((di->Valid & ACPI_VALID_HID) != 0 && hid != NULL) { 1129 1130 aprint_normal(", %s", hid); 1131 1132 if ((di->Valid & ACPI_VALID_UID) != 0 && uid != NULL) { 1133 1134 if (uid[0] == '\0') 1135 uid = "<null>"; 1136 1137 aprint_normal("-%s", uid); 1138 } 1139 } 1140 1141 aprint_normal(")"); 1142 1143 return UNCONF; 1144 } 1145 1146 /* 1147 * Notify. 1148 */ 1149 static void 1150 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1151 { 1152 struct acpi_softc *sc = acpi_softc; 1153 struct acpi_devnode *ad; 1154 ACPI_NOTIFY_HANDLER notify; 1155 1156 KASSERT(sc != NULL); 1157 KASSERT(aux == NULL); 1158 KASSERT(acpi_active != 0); 1159 1160 if (acpi_suspended != 0) 1161 return; 1162 1163 /* 1164 * System: 0x00 - 0x7F. 1165 * Device: 0x80 - 0xFF. 1166 */ 1167 switch (event) { 1168 1169 case ACPI_NOTIFY_BUS_CHECK: 1170 case ACPI_NOTIFY_DEVICE_CHECK: 1171 case ACPI_NOTIFY_DEVICE_WAKE: 1172 case ACPI_NOTIFY_EJECT_REQUEST: 1173 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1174 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1175 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1176 case ACPI_NOTIFY_POWER_FAULT: 1177 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1178 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1179 case ACPI_NOTIFY_RESERVED: 1180 case ACPI_NOTIFY_LOCALITY_UPDATE: 1181 break; 1182 } 1183 1184 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1185 "%s (%p)\n", event, acpi_name(handle), handle)); 1186 1187 /* 1188 * We deliver notifications only to drivers 1189 * that have been successfully attached and 1190 * that have registered a handler with us. 1191 * The opaque pointer is always the device_t. 1192 */ 1193 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) { 1194 1195 if (ad->ad_device == NULL) 1196 continue; 1197 1198 if ((notify = atomic_load_acquire(&ad->ad_notify)) == NULL) 1199 continue; 1200 1201 if (ad->ad_handle != handle) 1202 continue; 1203 1204 (*notify)(ad->ad_handle, event, ad->ad_device); 1205 1206 return; 1207 } 1208 1209 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1210 "for %s (%p)\n", event, acpi_name(handle), handle); 1211 } 1212 1213 bool 1214 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1215 { 1216 struct acpi_softc *sc = acpi_softc; 1217 1218 KASSERT(sc != NULL); 1219 KASSERT(acpi_active != 0); 1220 1221 if (acpi_suspended != 0) 1222 goto fail; 1223 1224 if (ad == NULL || notify == NULL) 1225 goto fail; 1226 1227 KASSERTMSG(ad->ad_notify == NULL, 1228 "%s: ACPI node %s already has notify handler: %p", 1229 ad->ad_device ? device_xname(ad->ad_device) : "(unknown)", 1230 ad->ad_name, 1231 ad->ad_notify); 1232 atomic_store_release(&ad->ad_notify, notify); 1233 1234 return true; 1235 1236 fail: 1237 aprint_error_dev(sc->sc_dev, "failed to register notify " 1238 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1239 1240 return false; 1241 } 1242 1243 void 1244 acpi_deregister_notify(struct acpi_devnode *ad) 1245 { 1246 1247 atomic_store_relaxed(&ad->ad_notify, NULL); 1248 1249 /* Wait for any in-flight calls to the notifier to complete. */ 1250 AcpiOsWaitEventsComplete(); 1251 } 1252 1253 /* 1254 * Fixed buttons. 1255 */ 1256 static void 1257 acpi_register_fixed_button(struct acpi_softc *sc, int event) 1258 { 1259 struct sysmon_pswitch *smpsw; 1260 ACPI_STATUS rv; 1261 int type; 1262 1263 switch (event) { 1264 1265 case ACPI_EVENT_POWER_BUTTON: 1266 1267 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1268 return; 1269 1270 type = PSWITCH_TYPE_POWER; 1271 smpsw = &sc->sc_smpsw_power; 1272 break; 1273 1274 case ACPI_EVENT_SLEEP_BUTTON: 1275 1276 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1277 return; 1278 1279 type = PSWITCH_TYPE_SLEEP; 1280 smpsw = &sc->sc_smpsw_sleep; 1281 break; 1282 1283 default: 1284 rv = AE_TYPE; 1285 goto fail; 1286 } 1287 1288 smpsw->smpsw_type = type; 1289 smpsw->smpsw_name = device_xname(sc->sc_dev); 1290 1291 if (sysmon_pswitch_register(smpsw) != 0) { 1292 rv = AE_ERROR; 1293 goto fail; 1294 } 1295 1296 AcpiClearEvent(event); 1297 1298 rv = AcpiInstallFixedEventHandler(event, 1299 acpi_fixed_button_handler, smpsw); 1300 1301 if (ACPI_FAILURE(rv)) { 1302 sysmon_pswitch_unregister(smpsw); 1303 goto fail; 1304 } 1305 1306 aprint_normal_dev(sc->sc_dev, "fixed %s button present\n", 1307 (type != PSWITCH_TYPE_SLEEP) ? "power" : "sleep"); 1308 1309 return; 1310 1311 fail: 1312 aprint_error_dev(sc->sc_dev, "failed to register " 1313 "fixed event %d: %s\n", event, AcpiFormatException(rv)); 1314 } 1315 1316 static void 1317 acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1318 { 1319 struct sysmon_pswitch *smpsw; 1320 ACPI_STATUS rv; 1321 1322 switch (event) { 1323 1324 case ACPI_EVENT_POWER_BUTTON: 1325 smpsw = &sc->sc_smpsw_power; 1326 1327 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1328 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1329 return; 1330 } 1331 1332 break; 1333 1334 case ACPI_EVENT_SLEEP_BUTTON: 1335 smpsw = &sc->sc_smpsw_sleep; 1336 1337 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1338 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1339 return; 1340 } 1341 1342 break; 1343 1344 default: 1345 rv = AE_TYPE; 1346 goto fail; 1347 } 1348 1349 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1350 1351 if (ACPI_SUCCESS(rv)) { 1352 sysmon_pswitch_unregister(smpsw); 1353 return; 1354 } 1355 1356 fail: 1357 aprint_error_dev(sc->sc_dev, "failed to deregister " 1358 "fixed event: %s\n", AcpiFormatException(rv)); 1359 } 1360 1361 static uint32_t 1362 acpi_fixed_button_handler(void *context) 1363 { 1364 static const int handler = OSL_NOTIFY_HANDLER; 1365 struct sysmon_pswitch *smpsw = context; 1366 1367 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1368 1369 return ACPI_INTERRUPT_HANDLED; 1370 } 1371 1372 static void 1373 acpi_fixed_button_pressed(void *context) 1374 { 1375 struct sysmon_pswitch *smpsw = context; 1376 1377 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1378 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1379 "power" : "sleep")); 1380 1381 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1382 } 1383 1384 /* 1385 * Sleep. 1386 */ 1387 static void 1388 acpi_sleep_init(struct acpi_softc *sc) 1389 { 1390 uint8_t a, b, i; 1391 ACPI_STATUS rv; 1392 1393 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1394 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1395 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1396 1397 /* 1398 * Evaluate supported sleep states. 1399 */ 1400 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1401 1402 rv = AcpiGetSleepTypeData(i, &a, &b); 1403 1404 if (ACPI_SUCCESS(rv)) 1405 sc->sc_sleepstates |= __BIT(i); 1406 } 1407 } 1408 1409 /* 1410 * Must be called with interrupts enabled. 1411 */ 1412 void 1413 acpi_enter_sleep_state(int state) 1414 { 1415 struct acpi_softc *sc = acpi_softc; 1416 ACPI_STATUS rv; 1417 1418 if (acpi_softc == NULL) 1419 return; 1420 1421 if (state == sc->sc_sleepstate) 1422 return; 1423 1424 if (state < ACPI_STATE_S0 || state > ACPI_STATE_S5) 1425 return; 1426 1427 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1428 1429 switch (state) { 1430 1431 case ACPI_STATE_S0: 1432 sc->sc_sleepstate = ACPI_STATE_S0; 1433 return; 1434 1435 case ACPI_STATE_S1: 1436 case ACPI_STATE_S2: 1437 case ACPI_STATE_S3: 1438 case ACPI_STATE_S4: 1439 1440 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1441 aprint_error_dev(sc->sc_dev, "sleep state " 1442 "S%d is not available\n", state); 1443 return; 1444 } 1445 1446 /* 1447 * Evaluate the _TTS method. This should be done before 1448 * pmf_system_suspend(9) and the evaluation of _PTS. 1449 * We should also re-evaluate this once we return to 1450 * S0 or if we abort the sleep state transition in the 1451 * middle (see ACPI 3.0, section 7.3.6). In reality, 1452 * however, the _TTS method is seldom seen in the field. 1453 */ 1454 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1455 1456 if (ACPI_SUCCESS(rv)) 1457 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1458 1459 if (state != ACPI_STATE_S1 && 1460 pmf_system_suspend(PMF_Q_NONE) != true) { 1461 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1462 break; 1463 } 1464 1465 /* 1466 * This will evaluate the _PTS and _SST methods, 1467 * but unlike the documentation claims, not _GTS, 1468 * which is evaluated in AcpiEnterSleepState(). 1469 * This must be called with interrupts enabled. 1470 */ 1471 rv = AcpiEnterSleepStatePrep(state); 1472 1473 if (ACPI_FAILURE(rv)) { 1474 aprint_error_dev(sc->sc_dev, "failed to prepare " 1475 "S%d: %s\n", state, AcpiFormatException(rv)); 1476 break; 1477 } 1478 1479 /* 1480 * After the _PTS method has been evaluated, we can 1481 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1482 */ 1483 acpi_wakedev_commit(sc, state); 1484 1485 sc->sc_sleepstate = state; 1486 1487 if (state == ACPI_STATE_S1) { 1488 1489 /* 1490 * Before the transition to S1, CPU caches 1491 * must be flushed (see ACPI 4.0, 7.3.4.2). 1492 * 1493 * Note that interrupts must be off before 1494 * calling AcpiEnterSleepState(). Conversely, 1495 * AcpiLeaveSleepState() should always be 1496 * called with interrupts enabled. 1497 */ 1498 acpi_md_OsDisableInterrupt(); 1499 1500 ACPI_FLUSH_CPU_CACHE(); 1501 rv = AcpiEnterSleepState(state); 1502 1503 if (ACPI_FAILURE(rv)) 1504 aprint_error_dev(sc->sc_dev, "failed to " 1505 "enter S1: %s\n", AcpiFormatException(rv)); 1506 1507 /* 1508 * Clear fixed events and disable all GPEs before 1509 * interrupts are enabled. 1510 */ 1511 AcpiClearEvent(ACPI_EVENT_PMTIMER); 1512 AcpiClearEvent(ACPI_EVENT_GLOBAL); 1513 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON); 1514 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON); 1515 AcpiClearEvent(ACPI_EVENT_RTC); 1516 #if (!ACPI_REDUCED_HARDWARE) 1517 AcpiHwDisableAllGpes(); 1518 #endif 1519 1520 acpi_md_OsEnableInterrupt(); 1521 rv = AcpiLeaveSleepState(state); 1522 1523 } else { 1524 1525 (void)acpi_md_sleep(state); 1526 1527 if (state == ACPI_STATE_S4) 1528 AcpiEnable(); 1529 1530 (void)pmf_system_bus_resume(PMF_Q_NONE); 1531 (void)AcpiLeaveSleepState(state); 1532 (void)AcpiSetFirmwareWakingVector(0, 0); 1533 (void)pmf_system_resume(PMF_Q_NONE); 1534 } 1535 1536 /* 1537 * No wake GPEs should be enabled at runtime. 1538 */ 1539 acpi_wakedev_commit(sc, ACPI_STATE_S0); 1540 break; 1541 1542 case ACPI_STATE_S5: 1543 1544 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1545 1546 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1547 1548 if (ACPI_FAILURE(rv)) { 1549 aprint_error_dev(sc->sc_dev, "failed to prepare " 1550 "S%d: %s\n", state, AcpiFormatException(rv)); 1551 break; 1552 } 1553 1554 (void)AcpiDisableAllGpes(); 1555 1556 DELAY(1000000); 1557 1558 sc->sc_sleepstate = state; 1559 acpi_md_OsDisableInterrupt(); 1560 1561 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1562 1563 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1564 1565 break; 1566 } 1567 1568 sc->sc_sleepstate = ACPI_STATE_S0; 1569 1570 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1571 } 1572 1573 /* 1574 * Sysctl. 1575 */ 1576 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1577 { 1578 const struct sysctlnode *rnode, *snode; 1579 int err; 1580 1581 err = sysctl_createv(clog, 0, NULL, &rnode, 1582 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1583 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1584 NULL, 0, NULL, 0, 1585 CTL_HW, CTL_CREATE, CTL_EOL); 1586 1587 if (err != 0) 1588 return; 1589 1590 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1591 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1592 "root", SYSCTL_DESCR("ACPI root pointer"), 1593 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1594 CTL_CREATE, CTL_EOL); 1595 1596 err = sysctl_createv(clog, 0, &rnode, &snode, 1597 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1598 "sleep", SYSCTL_DESCR("ACPI sleep"), 1599 NULL, 0, NULL, 0, 1600 CTL_CREATE, CTL_EOL); 1601 1602 if (err != 0) 1603 return; 1604 1605 (void)sysctl_createv(NULL, 0, &snode, NULL, 1606 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1607 "state", SYSCTL_DESCR("System sleep state"), 1608 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1609 CTL_CREATE, CTL_EOL); 1610 1611 (void)sysctl_createv(NULL, 0, &snode, NULL, 1612 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1613 "states", SYSCTL_DESCR("Supported sleep states"), 1614 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1615 CTL_CREATE, CTL_EOL); 1616 1617 err = sysctl_createv(clog, 0, &rnode, &rnode, 1618 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1619 "stat", SYSCTL_DESCR("ACPI statistics"), 1620 NULL, 0, NULL, 0, 1621 CTL_CREATE, CTL_EOL); 1622 1623 if (err != 0) 1624 return; 1625 1626 (void)sysctl_createv(clog, 0, &rnode, NULL, 1627 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1628 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1629 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1630 CTL_CREATE, CTL_EOL); 1631 1632 (void)sysctl_createv(clog, 0, &rnode, NULL, 1633 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1634 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1635 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1636 CTL_CREATE, CTL_EOL); 1637 1638 (void)sysctl_createv(clog, 0, &rnode, NULL, 1639 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1640 "fixed", SYSCTL_DESCR("Number of fixed events"), 1641 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1642 CTL_CREATE, CTL_EOL); 1643 1644 (void)sysctl_createv(clog, 0, &rnode, NULL, 1645 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1646 "method", SYSCTL_DESCR("Number of methods executed"), 1647 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1648 CTL_CREATE, CTL_EOL); 1649 1650 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1651 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1652 } 1653 1654 static int 1655 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1656 { 1657 struct sysctlnode node; 1658 uint64_t t; 1659 int err, i; 1660 1661 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1662 t += AcpiFixedEventCount[i]; 1663 1664 node = *rnode; 1665 node.sysctl_data = &t; 1666 1667 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1668 1669 if (err || newp == NULL) 1670 return err; 1671 1672 return 0; 1673 } 1674 1675 static int 1676 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1677 { 1678 struct acpi_softc *sc = acpi_softc; 1679 struct sysctlnode node; 1680 int err, t; 1681 1682 if (acpi_softc == NULL) 1683 return ENOSYS; 1684 1685 node = *rnode; 1686 t = sc->sc_sleepstate; 1687 node.sysctl_data = &t; 1688 1689 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1690 1691 if (err || newp == NULL) 1692 return err; 1693 1694 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1695 return EINVAL; 1696 1697 acpi_enter_sleep_state(t); 1698 1699 return 0; 1700 } 1701 1702 static int 1703 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1704 { 1705 struct acpi_softc *sc = acpi_softc; 1706 struct sysctlnode node; 1707 char t[3 * 6 + 1]; 1708 int err; 1709 1710 if (acpi_softc == NULL) 1711 return ENOSYS; 1712 1713 (void)memset(t, '\0', sizeof(t)); 1714 1715 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1716 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1717 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1718 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1719 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1720 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1721 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1722 1723 node = *rnode; 1724 node.sysctl_data = &t; 1725 1726 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1727 1728 if (err || newp == NULL) 1729 return err; 1730 1731 return 0; 1732 } 1733 1734 /* 1735 * Tables. 1736 */ 1737 ACPI_PHYSICAL_ADDRESS 1738 acpi_OsGetRootPointer(void) 1739 { 1740 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1741 1742 /* 1743 * We let MD code handle this since there are multiple ways to do it: 1744 * 1745 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1746 * 1747 * IA-64: Use the EFI. 1748 */ 1749 PhysicalAddress = acpi_md_OsGetRootPointer(); 1750 1751 if (acpi_root_pointer == 0) 1752 acpi_root_pointer = PhysicalAddress; 1753 1754 return PhysicalAddress; 1755 } 1756 1757 static ACPI_TABLE_HEADER * 1758 acpi_map_rsdt(void) 1759 { 1760 ACPI_PHYSICAL_ADDRESS paddr; 1761 ACPI_TABLE_RSDP *rsdp; 1762 1763 paddr = AcpiOsGetRootPointer(); 1764 1765 if (paddr == 0) 1766 return NULL; 1767 1768 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1769 1770 if (rsdp == NULL) 1771 return NULL; 1772 1773 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1774 paddr = rsdp->XsdtPhysicalAddress; 1775 else 1776 paddr = rsdp->RsdtPhysicalAddress; 1777 1778 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1779 1780 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1781 } 1782 1783 /* 1784 * XXX: Refactor to be a generic function that unmaps tables. 1785 */ 1786 static void 1787 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1788 { 1789 1790 if (rsdt == NULL) 1791 return; 1792 1793 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1794 } 1795 1796 /* 1797 * XXX: Refactor to be a generic function that maps tables. 1798 */ 1799 ACPI_STATUS 1800 acpi_madt_map(void) 1801 { 1802 ACPI_STATUS rv; 1803 1804 if (madt_header != NULL) 1805 return AE_ALREADY_EXISTS; 1806 1807 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); 1808 1809 if (ACPI_FAILURE(rv)) 1810 return rv; 1811 1812 return AE_OK; 1813 } 1814 1815 void 1816 acpi_madt_unmap(void) 1817 { 1818 madt_header = NULL; 1819 } 1820 1821 ACPI_STATUS 1822 acpi_gtdt_map(void) 1823 { 1824 ACPI_STATUS rv; 1825 1826 if (gtdt_header != NULL) 1827 return AE_ALREADY_EXISTS; 1828 1829 rv = AcpiGetTable(ACPI_SIG_GTDT, 1, >dt_header); 1830 1831 if (ACPI_FAILURE(rv)) 1832 return rv; 1833 1834 return AE_OK; 1835 } 1836 1837 void 1838 acpi_gtdt_unmap(void) 1839 { 1840 gtdt_header = NULL; 1841 } 1842 1843 /* 1844 * XXX: Refactor to be a generic function that walks tables. 1845 */ 1846 void 1847 acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) 1848 { 1849 ACPI_SUBTABLE_HEADER *hdrp; 1850 char *madtend, *where; 1851 1852 madtend = (char *)madt_header + madt_header->Length; 1853 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); 1854 1855 while (where < madtend) { 1856 1857 hdrp = (ACPI_SUBTABLE_HEADER *)where; 1858 1859 if (hdrp->Length == 0 || ACPI_FAILURE(func(hdrp, aux))) 1860 break; 1861 1862 where += hdrp->Length; 1863 } 1864 } 1865 1866 void 1867 acpi_gtdt_walk(ACPI_STATUS (*func)(ACPI_GTDT_HEADER *, void *), void *aux) 1868 { 1869 ACPI_GTDT_HEADER *hdrp; 1870 char *gtdtend, *where; 1871 1872 gtdtend = (char *)gtdt_header + gtdt_header->Length; 1873 where = (char *)gtdt_header + sizeof (ACPI_TABLE_GTDT); 1874 1875 while (where < gtdtend) { 1876 1877 hdrp = (ACPI_GTDT_HEADER *)where; 1878 1879 if (hdrp->Length == 0 || ACPI_FAILURE(func(hdrp, aux))) 1880 break; 1881 1882 where += hdrp->Length; 1883 } 1884 } 1885 1886 /* 1887 * Miscellaneous. 1888 */ 1889 static bool 1890 acpi_is_scope(struct acpi_devnode *ad) 1891 { 1892 int i; 1893 1894 /* 1895 * Return true if the node is a root scope. 1896 */ 1897 if (ad->ad_parent == NULL) 1898 return false; 1899 1900 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1901 return false; 1902 1903 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1904 1905 if (acpi_scopes[i] == NULL) 1906 continue; 1907 1908 if (ad->ad_handle == acpi_scopes[i]) 1909 return true; 1910 } 1911 1912 return false; 1913 } 1914 1915 bool 1916 acpi_device_present(ACPI_HANDLE handle) 1917 { 1918 ACPI_STATUS rv; 1919 ACPI_INTEGER sta; 1920 1921 rv = acpi_eval_integer(handle, "_STA", &sta); 1922 1923 if (ACPI_FAILURE(rv)) { 1924 /* No _STA method -> must be there */ 1925 return rv == AE_NOT_FOUND; 1926 } 1927 1928 return (sta & ACPI_STA_OK) == ACPI_STA_OK; 1929 } 1930 1931 /* 1932 * ACPIVERBOSE. 1933 */ 1934 void 1935 acpi_load_verbose(void) 1936 { 1937 1938 if (acpi_verbose_loaded == 0) 1939 module_autoload("acpiverbose", MODULE_CLASS_MISC); 1940 } 1941 1942 void 1943 acpi_print_verbose_stub(struct acpi_softc *sc) 1944 { 1945 1946 acpi_load_verbose(); 1947 1948 if (acpi_verbose_loaded != 0) 1949 acpi_print_verbose(sc); 1950 } 1951 1952 void 1953 acpi_print_dev_stub(const char *pnpstr) 1954 { 1955 1956 acpi_load_verbose(); 1957 1958 if (acpi_verbose_loaded != 0) 1959 acpi_print_dev(pnpstr); 1960 } 1961 1962 MALLOC_DECLARE(M_ACPI); /* XXX: ACPI_ACTIVATE_DEV should use kmem(9). */ 1963 1964 /* 1965 * ACPI_ACTIVATE_DEV. 1966 */ 1967 static void 1968 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 1969 { 1970 1971 #ifndef ACPI_ACTIVATE_DEV 1972 return; 1973 } 1974 #else 1975 static const int valid = ACPI_VALID_HID; 1976 ACPI_DEVICE_INFO *newdi; 1977 ACPI_STATUS rv; 1978 1979 1980 /* 1981 * If the device is valid and present, 1982 * but not enabled, try to activate it. 1983 */ 1984 if (((*di)->Valid & valid) != valid) 1985 return; 1986 1987 if (!acpi_device_present(handle)) 1988 return; 1989 1990 rv = acpi_allocate_resources(handle); 1991 1992 if (ACPI_FAILURE(rv)) 1993 goto fail; 1994 1995 rv = AcpiGetObjectInfo(handle, &newdi); 1996 1997 if (ACPI_FAILURE(rv)) 1998 goto fail; 1999 2000 ACPI_FREE(*di); 2001 *di = newdi; 2002 2003 aprint_verbose_dev(acpi_softc->sc_dev, 2004 "%s activated\n", (*di)->HardwareId.String); 2005 2006 return; 2007 2008 fail: 2009 aprint_error_dev(acpi_softc->sc_dev, "failed to " 2010 "activate %s\n", (*di)->HardwareId.String); 2011 } 2012 2013 /* 2014 * XXX: This very incomplete. 2015 */ 2016 ACPI_STATUS 2017 acpi_allocate_resources(ACPI_HANDLE handle) 2018 { 2019 ACPI_BUFFER bufp, bufc, bufn; 2020 ACPI_RESOURCE *resp, *resc, *resn; 2021 ACPI_RESOURCE_IRQ *irq; 2022 #if 0 2023 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 2024 #endif 2025 ACPI_STATUS rv; 2026 uint delta; 2027 2028 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 2029 if (ACPI_FAILURE(rv)) 2030 goto out; 2031 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 2032 if (ACPI_FAILURE(rv)) { 2033 goto out1; 2034 } 2035 2036 bufn.Length = 1000; 2037 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 2038 resp = bufp.Pointer; 2039 resc = bufc.Pointer; 2040 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 2041 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 2042 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 2043 resp = ACPI_NEXT_RESOURCE(resp); 2044 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 2045 break; 2046 /* Found identical Id */ 2047 resn->Type = resc->Type; 2048 switch (resc->Type) { 2049 case ACPI_RESOURCE_TYPE_IRQ: 2050 memcpy(&resn->Data, &resp->Data, 2051 sizeof(ACPI_RESOURCE_IRQ)); 2052 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 2053 irq->Interrupts[0] = 2054 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 2055 Interrupts[irq->InterruptCount-1]; 2056 irq->InterruptCount = 1; 2057 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 2058 break; 2059 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 2060 memcpy(&resn->Data, &resp->Data, 2061 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 2062 #if 0 2063 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 2064 /* 2065 * XXX: Not duplicating the interrupt logic above 2066 * because its not clear what it accomplishes. 2067 */ 2068 xirq->Interrupts[0] = 2069 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 2070 Interrupts[irq->NumberOfInterrupts-1]; 2071 xirq->NumberOfInterrupts = 1; 2072 #endif 2073 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 2074 break; 2075 case ACPI_RESOURCE_TYPE_IO: 2076 memcpy(&resn->Data, &resp->Data, 2077 sizeof(ACPI_RESOURCE_IO)); 2078 resn->Length = resp->Length; 2079 break; 2080 default: 2081 aprint_error_dev(acpi_softc->sc_dev, 2082 "%s: invalid type %u\n", __func__, resc->Type); 2083 rv = AE_BAD_DATA; 2084 goto out2; 2085 } 2086 resc = ACPI_NEXT_RESOURCE(resc); 2087 resn = ACPI_NEXT_RESOURCE(resn); 2088 resp = ACPI_NEXT_RESOURCE(resp); 2089 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 2090 if (delta >= 2091 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 2092 bufn.Length *= 2; 2093 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 2094 M_ACPI, M_WAITOK); 2095 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 2096 delta); 2097 } 2098 } 2099 2100 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 2101 aprint_error_dev(acpi_softc->sc_dev, 2102 "%s: resc not exhausted\n", __func__); 2103 rv = AE_BAD_DATA; 2104 goto out3; 2105 } 2106 2107 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 2108 rv = AcpiSetCurrentResources(handle, &bufn); 2109 2110 if (ACPI_FAILURE(rv)) 2111 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 2112 "resources: %s\n", __func__, AcpiFormatException(rv)); 2113 2114 out3: 2115 free(bufn.Pointer, M_ACPI); 2116 out2: 2117 ACPI_FREE(bufc.Pointer); 2118 out1: 2119 ACPI_FREE(bufp.Pointer); 2120 out: 2121 return rv; 2122 } 2123 2124 #endif /* ACPI_ACTIVATE_DEV */ 2125