1 /* $NetBSD: acpi.c,v 1.297 2022/02/27 21:22:09 riastradh Exp $ */ 2 3 /*- 4 * Copyright (c) 2003, 2007 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum of By Noon Software, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 2003 Wasabi Systems, Inc. 34 * All rights reserved. 35 * 36 * Written by Frank van der Linden for Wasabi Systems, Inc. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed for the NetBSD Project by 49 * Wasabi Systems, Inc. 50 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 51 * or promote products derived from this software without specific prior 52 * written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 56 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 57 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 58 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 59 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 60 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 61 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 62 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 63 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 64 * POSSIBILITY OF SUCH DAMAGE. 65 */ 66 67 /* 68 * Copyright 2001, 2003 Wasabi Systems, Inc. 69 * All rights reserved. 70 * 71 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 72 * 73 * Redistribution and use in source and binary forms, with or without 74 * modification, are permitted provided that the following conditions 75 * are met: 76 * 1. Redistributions of source code must retain the above copyright 77 * notice, this list of conditions and the following disclaimer. 78 * 2. Redistributions in binary form must reproduce the above copyright 79 * notice, this list of conditions and the following disclaimer in the 80 * documentation and/or other materials provided with the distribution. 81 * 3. All advertising materials mentioning features or use of this software 82 * must display the following acknowledgement: 83 * This product includes software developed for the NetBSD Project by 84 * Wasabi Systems, Inc. 85 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 86 * or promote products derived from this software without specific prior 87 * written permission. 88 * 89 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 90 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 91 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 92 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 93 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 94 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 95 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 96 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 97 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 98 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 99 * POSSIBILITY OF SUCH DAMAGE. 100 */ 101 102 #include <sys/cdefs.h> 103 __KERNEL_RCSID(0, "$NetBSD: acpi.c,v 1.297 2022/02/27 21:22:09 riastradh Exp $"); 104 105 #include "pci.h" 106 #include "opt_acpi.h" 107 #include "opt_pcifixup.h" 108 109 #include <sys/param.h> 110 #include <sys/atomic.h> 111 #include <sys/device.h> 112 #include <sys/kernel.h> 113 #include <sys/kmem.h> 114 #include <sys/malloc.h> 115 #include <sys/module.h> 116 #include <sys/mutex.h> 117 #include <sys/sysctl.h> 118 #include <sys/systm.h> 119 #include <sys/timetc.h> 120 121 #include <dev/acpi/acpireg.h> 122 #include <dev/acpi/acpivar.h> 123 #include <dev/acpi/acpi_mcfg.h> 124 #include <dev/acpi/acpi_osd.h> 125 #include <dev/acpi/acpi_pci.h> 126 #include <dev/acpi/acpi_power.h> 127 #include <dev/acpi/acpi_timer.h> 128 #include <dev/acpi/acpi_wakedev.h> 129 130 #include <machine/acpi_machdep.h> 131 132 #include "ioconf.h" 133 134 #define _COMPONENT ACPI_BUS_COMPONENT 135 ACPI_MODULE_NAME ("acpi") 136 137 /* 138 * The acpi_active variable is set when the ACPI subsystem is active. 139 * Machine-dependent code may wish to skip other steps (such as attaching 140 * subsystems that ACPI supercedes) when ACPI is active. 141 */ 142 int acpi_active = 0; 143 int acpi_suspended = 0; 144 int acpi_force_load = 0; 145 int acpi_verbose_loaded = 0; 146 147 struct acpi_softc *acpi_softc = NULL; 148 static uint64_t acpi_root_pointer; 149 extern kmutex_t acpi_interrupt_list_mtx; 150 static ACPI_HANDLE acpi_scopes[4]; 151 ACPI_TABLE_HEADER *madt_header; 152 ACPI_TABLE_HEADER *gtdt_header; 153 154 /* 155 * This structure provides a context for the ACPI 156 * namespace walk performed in acpi_build_tree(). 157 */ 158 struct acpi_walkcontext { 159 struct acpi_softc *aw_sc; 160 struct acpi_devnode *aw_parent; 161 }; 162 163 /* 164 * Ignored HIDs. 165 */ 166 static const char * const acpi_ignored_ids[] = { 167 #if defined(i386) || defined(x86_64) 168 "ACPI0007", /* ACPI CPUs do not attach to acpi(4) */ 169 "PNP0000", /* AT interrupt controller is handled internally */ 170 "PNP0001", /* EISA interrupt controller is handled internally */ 171 "PNP0200", /* AT DMA controller is handled internally */ 172 "PNP0A??", /* PCI Busses are handled internally */ 173 "PNP0B00", /* AT RTC is handled internally */ 174 "PNP0C02", /* PnP motherboard resources */ 175 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 176 #endif 177 #if defined(x86_64) 178 "PNP0C04", /* FPU is handled internally */ 179 #endif 180 #if defined(__aarch64__) 181 "ACPI0004", /* ACPI module devices are handled internally */ 182 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 183 #endif 184 NULL 185 }; 186 187 /* 188 * Devices that should be attached early. 189 */ 190 static const char * const acpi_early_ids[] = { 191 "PNP0C09", /* acpiec(4) */ 192 NULL 193 }; 194 195 static int acpi_match(device_t, cfdata_t, void *); 196 static int acpi_submatch(device_t, cfdata_t, const int *, void *); 197 static void acpi_attach(device_t, device_t, void *); 198 static int acpi_detach(device_t, int); 199 static void acpi_childdet(device_t, device_t); 200 static bool acpi_suspend(device_t, const pmf_qual_t *); 201 static bool acpi_resume(device_t, const pmf_qual_t *); 202 203 static void acpi_build_tree(struct acpi_softc *); 204 static void acpi_config_tree(struct acpi_softc *); 205 static void acpi_config_dma(struct acpi_softc *); 206 static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, 207 void *, void **); 208 static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t, 209 void *, void **); 210 static void acpi_make_name(struct acpi_devnode *, uint32_t); 211 212 static int acpi_rescan(device_t, const char *, const int *); 213 static void acpi_rescan_early(struct acpi_softc *); 214 static void acpi_rescan_nodes(struct acpi_softc *); 215 static void acpi_rescan_capabilities(device_t); 216 static int acpi_print(void *aux, const char *); 217 218 static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); 219 220 static void acpi_register_fixed_button(struct acpi_softc *, int); 221 static void acpi_deregister_fixed_button(struct acpi_softc *, int); 222 static uint32_t acpi_fixed_button_handler(void *); 223 static void acpi_fixed_button_pressed(void *); 224 225 static void acpi_sleep_init(struct acpi_softc *); 226 227 static int sysctl_hw_acpi_fixedstats(SYSCTLFN_PROTO); 228 static int sysctl_hw_acpi_sleepstate(SYSCTLFN_PROTO); 229 static int sysctl_hw_acpi_sleepstates(SYSCTLFN_PROTO); 230 231 static bool acpi_is_scope(struct acpi_devnode *); 232 static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 233 static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 234 235 void acpi_print_verbose_stub(struct acpi_softc *); 236 void acpi_print_dev_stub(const char *); 237 238 static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **); 239 ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE); 240 241 void (*acpi_print_verbose)(struct acpi_softc *) = acpi_print_verbose_stub; 242 void (*acpi_print_dev)(const char *) = acpi_print_dev_stub; 243 244 bus_dma_tag_t acpi_default_dma_tag(struct acpi_softc *, struct acpi_devnode *); 245 bus_dma_tag_t acpi_default_dma64_tag(struct acpi_softc *, struct acpi_devnode *); 246 pci_chipset_tag_t acpi_default_pci_chipset_tag(struct acpi_softc *, int, int); 247 248 CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 249 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 250 251 /* 252 * Probe for ACPI support. 253 * 254 * This is called by the machine-dependent ACPI front-end. 255 * Note: this is not an autoconfiguration interface function. 256 */ 257 int 258 acpi_probe(void) 259 { 260 ACPI_TABLE_HEADER *rsdt; 261 ACPI_STATUS rv; 262 int quirks; 263 264 if (acpi_softc != NULL) 265 panic("%s: already probed", __func__); 266 267 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 268 269 /* 270 * Start up ACPICA. 271 */ 272 AcpiGbl_EnableInterpreterSlack = true; 273 274 rv = AcpiInitializeSubsystem(); 275 276 if (ACPI_FAILURE(rv)) { 277 aprint_error("%s: failed to initialize subsystem\n", __func__); 278 return 0; 279 } 280 281 /* 282 * Allocate space for RSDT/XSDT and DSDT, 283 * but allow resizing if more tables exist. 284 */ 285 rv = AcpiInitializeTables(NULL, 2, true); 286 287 if (ACPI_FAILURE(rv)) { 288 aprint_error("%s: failed to initialize tables\n", __func__); 289 goto fail; 290 } 291 292 rv = AcpiLoadTables(); 293 294 if (ACPI_FAILURE(rv)) { 295 aprint_error("%s: failed to load tables\n", __func__); 296 goto fail; 297 } 298 299 rsdt = acpi_map_rsdt(); 300 301 if (rsdt == NULL) { 302 aprint_error("%s: failed to map RSDT\n", __func__); 303 goto fail; 304 } 305 306 quirks = acpi_find_quirks(); 307 308 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_BROKEN) != 0) { 309 310 aprint_normal("ACPI: BIOS is listed as broken:\n"); 311 aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 312 "AslId <%4.4s,%08x>\n", rsdt->OemId, rsdt->OemTableId, 313 rsdt->OemRevision, rsdt->AslCompilerId, 314 rsdt->AslCompilerRevision); 315 aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n"); 316 317 acpi_unmap_rsdt(rsdt); 318 goto fail; 319 } 320 321 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_OLDBIOS) != 0) { 322 323 aprint_normal("ACPI: BIOS is too old (%s). " 324 "Set acpi_force_load to use.\n", 325 pmf_get_platform("bios-date")); 326 327 acpi_unmap_rsdt(rsdt); 328 goto fail; 329 } 330 331 acpi_unmap_rsdt(rsdt); 332 333 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 334 335 if (ACPI_FAILURE(rv)) { 336 aprint_error("%s: failed to enable subsystem\n", __func__); 337 goto fail; 338 } 339 340 return 1; 341 342 fail: 343 (void)AcpiTerminate(); 344 345 return 0; 346 } 347 348 void 349 acpi_disable(void) 350 { 351 352 if (acpi_softc == NULL) 353 return; 354 355 KASSERT(acpi_active != 0); 356 357 if (AcpiGbl_FADT.SmiCommand != 0) 358 AcpiDisable(); 359 } 360 361 int 362 acpi_check(device_t parent, const char *ifattr) 363 { 364 return config_search(parent, NULL, 365 CFARGS(.submatch = acpi_submatch, 366 .iattr = ifattr)) != NULL; 367 } 368 369 int 370 acpi_reset(void) 371 { 372 struct acpi_softc *sc = acpi_softc; 373 ACPI_GENERIC_ADDRESS *ResetReg; 374 ACPI_PCI_ID PciId; 375 ACPI_STATUS status; 376 377 if (sc == NULL) 378 return ENXIO; 379 380 ResetReg = &AcpiGbl_FADT.ResetRegister; 381 382 /* Check if the reset register is supported */ 383 if (!(AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) || 384 !ResetReg->Address) { 385 return ENOENT; 386 } 387 388 switch (ResetReg->SpaceId) { 389 case ACPI_ADR_SPACE_PCI_CONFIG: 390 PciId.Segment = PciId.Bus = 0; 391 PciId.Device = ACPI_GAS_PCI_DEV(ResetReg->Address); 392 PciId.Function = ACPI_GAS_PCI_FUNC(ResetReg->Address); 393 status = AcpiOsWritePciConfiguration(&PciId, 394 ACPI_GAS_PCI_REGOFF(ResetReg->Address), 395 AcpiGbl_FADT.ResetValue, ResetReg->BitWidth); 396 break; 397 case ACPI_ADR_SPACE_SYSTEM_IO: 398 case ACPI_ADR_SPACE_SYSTEM_MEMORY: 399 status = AcpiReset(); 400 break; 401 default: 402 status = AE_TYPE; 403 break; 404 } 405 406 return ACPI_FAILURE(status) ? EIO : 0; 407 } 408 409 /* 410 * Autoconfiguration. 411 */ 412 static int 413 acpi_match(device_t parent, cfdata_t match, void *aux) 414 { 415 /* 416 * XXX: Nada; MD code has called acpi_probe(). 417 */ 418 return 1; 419 } 420 421 static int 422 acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 423 { 424 struct cfattach *ca; 425 426 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 427 428 return (ca == &acpi_ca); 429 } 430 431 static void 432 acpi_attach(device_t parent, device_t self, void *aux) 433 { 434 struct acpi_softc *sc = device_private(self); 435 struct acpibus_attach_args *aa = aux; 436 ACPI_TABLE_HEADER *rsdt, *hdr; 437 ACPI_STATUS rv; 438 int i; 439 440 aprint_naive("\n"); 441 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 442 443 if (acpi_softc != NULL) 444 panic("%s: already attached", __func__); 445 446 rsdt = acpi_map_rsdt(); 447 448 if (rsdt == NULL) 449 aprint_error_dev(self, "X/RSDT: Not found\n"); 450 else { 451 aprint_verbose_dev(self, 452 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 453 rsdt->OemId, rsdt->OemTableId, 454 rsdt->OemRevision, 455 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 456 } 457 458 acpi_unmap_rsdt(rsdt); 459 460 sc->sc_dev = self; 461 sc->sc_root = NULL; 462 463 sc->sc_sleepstate = ACPI_STATE_S0; 464 sc->sc_quirks = acpi_find_quirks(); 465 466 sysmon_power_settype("acpi"); 467 468 sc->sc_iot = aa->aa_iot; 469 sc->sc_memt = aa->aa_memt; 470 sc->sc_pciflags = aa->aa_pciflags; 471 sc->sc_ic = aa->aa_ic; 472 sc->sc_dmat = aa->aa_dmat; 473 sc->sc_dmat64 = aa->aa_dmat64; 474 475 SIMPLEQ_INIT(&sc->sc_head); 476 477 acpi_softc = sc; 478 479 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) 480 aprint_error_dev(self, "couldn't establish power handler\n"); 481 482 /* 483 * Bring ACPICA on-line. 484 */ 485 486 rv = AcpiEnableSubsystem(ACPI_FULL_INITIALIZATION); 487 488 if (ACPI_FAILURE(rv)) 489 goto fail; 490 491 /* 492 * Early initialization of acpiec(4) via ECDT. 493 */ 494 config_found(self, aa, NULL, 495 CFARGS(.iattr = "acpiecdtbus")); 496 497 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 498 499 if (ACPI_FAILURE(rv)) 500 goto fail; 501 502 /* 503 * Scan the namespace and build our device tree. 504 */ 505 acpi_build_tree(sc); 506 507 #if NPCI > 0 508 /* 509 * Probe MCFG table 510 */ 511 acpimcfg_probe(sc); 512 #endif 513 514 acpi_md_callback(sc); 515 516 /* 517 * Early initialization of the _PDC control method 518 * that may load additional SSDT tables dynamically. 519 */ 520 (void)acpi_md_pdc(); 521 522 /* 523 * Install global notify handlers. 524 */ 525 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 526 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 527 528 if (ACPI_FAILURE(rv)) 529 goto fail; 530 531 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 532 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 533 534 if (ACPI_FAILURE(rv)) 535 goto fail; 536 537 acpi_active = 1; 538 539 if (!AcpiGbl_ReducedHardware) { 540 /* Show SCI interrupt. */ 541 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 542 AcpiGbl_FADT.SciInterrupt); 543 544 /* 545 * Install fixed-event handlers. 546 */ 547 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 548 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 549 } 550 551 /* 552 * Load drivers that operate on System Description Tables. 553 */ 554 for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i) { 555 rv = AcpiGetTableByIndex(i, &hdr); 556 if (ACPI_FAILURE(rv)) { 557 continue; 558 } 559 config_found(sc->sc_dev, hdr, NULL, 560 CFARGS(.iattr = "acpisdtbus")); 561 AcpiPutTable(hdr); 562 } 563 564 acpitimer_init(sc); 565 acpi_config_tree(sc); 566 acpi_sleep_init(sc); 567 568 #ifdef ACPI_DEBUG 569 acpi_debug_init(); 570 #endif 571 572 /* 573 * Print debug information. 574 */ 575 acpi_print_verbose(sc); 576 577 return; 578 579 fail: 580 aprint_error("%s: failed to initialize ACPI: %s\n", 581 __func__, AcpiFormatException(rv)); 582 } 583 584 /* 585 * XXX: This is incomplete. 586 */ 587 static int 588 acpi_detach(device_t self, int flags) 589 { 590 struct acpi_softc *sc = device_private(self); 591 ACPI_STATUS rv; 592 int rc; 593 594 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 595 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 596 597 if (ACPI_FAILURE(rv)) 598 return EBUSY; 599 600 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 601 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 602 603 if (ACPI_FAILURE(rv)) 604 return EBUSY; 605 606 if ((rc = config_detach_children(self, flags)) != 0) 607 return rc; 608 609 if ((rc = acpitimer_detach()) != 0) 610 return rc; 611 612 if (!AcpiGbl_ReducedHardware) { 613 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 614 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 615 } 616 617 pmf_device_deregister(self); 618 619 acpi_softc = NULL; 620 621 return 0; 622 } 623 624 static void 625 acpi_childdet(device_t self, device_t child) 626 { 627 struct acpi_softc *sc = device_private(self); 628 struct acpi_devnode *ad; 629 630 if (sc->sc_apmbus == child) 631 sc->sc_apmbus = NULL; 632 633 if (sc->sc_hpet == child) 634 sc->sc_hpet = NULL; 635 636 if (sc->sc_wdrt == child) 637 sc->sc_wdrt = NULL; 638 639 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 /* 702 * Scan the internal namespace. 703 */ 704 (void)acpi_pcidev_scan(sc->sc_root); 705 } 706 707 static void 708 acpi_config_tree(struct acpi_softc *sc) 709 { 710 /* 711 * Assign bus_dma resources 712 */ 713 acpi_config_dma(sc); 714 715 /* 716 * Configure all everything found "at acpi?". 717 */ 718 (void)acpi_rescan(sc->sc_dev, NULL, NULL); 719 720 /* 721 * Update GPE information. 722 * 723 * Note that this must be called after 724 * all GPE handlers have been installed. 725 */ 726 (void)AcpiUpdateAllGpes(); 727 728 /* 729 * Defer rest of the configuration. 730 */ 731 (void)config_defer(sc->sc_dev, acpi_rescan_capabilities); 732 } 733 734 // XXXNH? 735 static void 736 acpi_config_dma(struct acpi_softc *sc) 737 { 738 struct acpi_devnode *ad; 739 740 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) { 741 742 if (ad->ad_device != NULL) 743 continue; 744 745 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 746 continue; 747 748 ad->ad_dmat = acpi_get_dma_tag(sc, ad); 749 ad->ad_dmat64 = acpi_get_dma64_tag(sc, ad); 750 } 751 } 752 753 static ACPI_STATUS 754 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 755 void *context, void **status) 756 { 757 struct acpi_walkcontext *awc = context; 758 struct acpi_softc *sc = awc->aw_sc; 759 struct acpi_devnode *ad; 760 ACPI_DEVICE_INFO *devinfo; 761 ACPI_OBJECT_TYPE type; 762 ACPI_STATUS rv; 763 764 rv = AcpiGetObjectInfo(handle, &devinfo); 765 766 if (ACPI_FAILURE(rv)) 767 return AE_OK; /* Do not terminate the walk. */ 768 769 type = devinfo->Type; 770 771 switch (type) { 772 773 case ACPI_TYPE_DEVICE: 774 acpi_activate_device(handle, &devinfo); 775 /* FALLTHROUGH */ 776 777 case ACPI_TYPE_PROCESSOR: 778 case ACPI_TYPE_THERMAL: 779 case ACPI_TYPE_POWER: 780 781 ad = kmem_zalloc(sizeof(*ad), KM_SLEEP); 782 783 ad->ad_device = NULL; 784 ad->ad_notify = NULL; 785 ad->ad_pciinfo = NULL; 786 ad->ad_wakedev = NULL; 787 788 ad->ad_type = type; 789 ad->ad_handle = handle; 790 ad->ad_devinfo = devinfo; 791 792 ad->ad_root = sc->sc_dev; 793 ad->ad_parent = awc->aw_parent; 794 795 acpi_match_node_init(ad); 796 acpi_make_name(ad, devinfo->Name); 797 798 /* 799 * Identify wake GPEs from the _PRW. Note that 800 * AcpiUpdateAllGpes() must be called afterwards. 801 */ 802 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) 803 acpi_wakedev_init(ad); 804 805 SIMPLEQ_INIT(&ad->ad_child_head); 806 SIMPLEQ_INSERT_TAIL(&sc->sc_head, ad, ad_list); 807 808 if (ad->ad_parent != NULL) { 809 810 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 811 ad, ad_child_list); 812 } 813 814 awc->aw_parent = ad; 815 break; 816 817 default: 818 ACPI_FREE(devinfo); 819 break; 820 } 821 822 return AE_OK; 823 } 824 825 static ACPI_STATUS 826 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 827 void *context, void **status) 828 { 829 struct acpi_walkcontext *awc = context; 830 831 KASSERT(awc != NULL); 832 KASSERT(awc->aw_parent != NULL); 833 834 if (handle == awc->aw_parent->ad_handle) 835 awc->aw_parent = awc->aw_parent->ad_parent; 836 837 return AE_OK; 838 } 839 840 static void 841 acpi_make_name(struct acpi_devnode *ad, uint32_t name) 842 { 843 ACPI_NAME_UNION *anu; 844 int clear, i; 845 846 anu = (ACPI_NAME_UNION *)&name; 847 ad->ad_name[4] = '\0'; 848 849 for (i = 3, clear = 0; i >= 0; i--) { 850 851 if (clear == 0 && anu->Ascii[i] == '_') 852 ad->ad_name[i] = '\0'; 853 else { 854 ad->ad_name[i] = anu->Ascii[i]; 855 clear = 1; 856 } 857 } 858 859 if (ad->ad_name[0] == '\0') 860 ad->ad_name[0] = '_'; 861 } 862 863 bus_dma_tag_t 864 acpi_default_dma_tag(struct acpi_softc *sc, struct acpi_devnode *ad) 865 { 866 return sc->sc_dmat; 867 } 868 __weak_alias(acpi_get_dma_tag,acpi_default_dma_tag); 869 870 bus_dma_tag_t 871 acpi_default_dma64_tag(struct acpi_softc *sc, struct acpi_devnode *ad) 872 { 873 return sc->sc_dmat64; 874 } 875 __weak_alias(acpi_get_dma64_tag,acpi_default_dma64_tag); 876 877 pci_chipset_tag_t 878 acpi_default_pci_chipset_tag(struct acpi_softc *sc, int seg, int bbn) 879 { 880 return NULL; 881 } 882 __weak_alias(acpi_get_pci_chipset_tag,acpi_default_pci_chipset_tag); 883 884 /* 885 * Device attachment. 886 */ 887 static int 888 acpi_rescan(device_t self, const char *ifattr, const int *locators) 889 { 890 struct acpi_softc *sc = device_private(self); 891 struct acpi_attach_args aa; 892 893 /* 894 * Try to attach hpet(4) first via a specific table. 895 */ 896 aa.aa_memt = sc->sc_memt; 897 898 if (ifattr_match(ifattr, "acpihpetbus") && sc->sc_hpet == NULL) { 899 sc->sc_hpet = config_found(sc->sc_dev, &aa, NULL, 900 CFARGS(.iattr = "acpihpetbus")); 901 } 902 903 /* 904 * A two-pass scan for acpinodebus. 905 */ 906 if (ifattr_match(ifattr, "acpinodebus")) { 907 acpi_rescan_early(sc); 908 acpi_rescan_nodes(sc); 909 } 910 911 /* 912 * Attach APM emulation and acpiwdrt(4). 913 */ 914 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) { 915 sc->sc_apmbus = config_found(sc->sc_dev, NULL, NULL, 916 CFARGS(.iattr = "acpiapmbus")); 917 } 918 919 if (ifattr_match(ifattr, "acpiwdrtbus") && sc->sc_wdrt == NULL) { 920 sc->sc_wdrt = config_found(sc->sc_dev, NULL, NULL, 921 CFARGS(.iattr = "acpiwdrtbus")); 922 } 923 924 return 0; 925 } 926 927 static void 928 acpi_rescan_early(struct acpi_softc *sc) 929 { 930 struct acpi_attach_args aa; 931 struct acpi_devnode *ad; 932 933 /* 934 * First scan for devices such as acpiec(4) that 935 * should be always attached before anything else. 936 * We want these devices to attach regardless of 937 * the device status and other restrictions. 938 */ 939 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) { 940 941 if (ad->ad_device != NULL) 942 continue; 943 944 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 945 continue; 946 947 if (acpi_match_hid(ad->ad_devinfo, acpi_early_ids) == 0) 948 continue; 949 950 KASSERT(ad->ad_handle != NULL); 951 952 aa.aa_node = ad; 953 aa.aa_iot = sc->sc_iot; 954 aa.aa_memt = sc->sc_memt; 955 if (ad->ad_pciinfo != NULL) { 956 aa.aa_pc = ad->ad_pciinfo->ap_pc; 957 aa.aa_pciflags = sc->sc_pciflags; 958 } 959 aa.aa_ic = sc->sc_ic; 960 aa.aa_dmat = ad->ad_dmat; 961 aa.aa_dmat64 = ad->ad_dmat64; 962 963 ad->ad_device = config_found(sc->sc_dev, &aa, acpi_print, 964 CFARGS(.iattr = "acpinodebus", 965 .devhandle = devhandle_from_acpi(devhandle_invalid(), 966 ad->ad_handle))); 967 } 968 } 969 970 static void 971 acpi_rescan_nodes(struct acpi_softc *sc) 972 { 973 const char * const hpet_ids[] = { "PNP0103", NULL }; 974 struct acpi_attach_args aa; 975 struct acpi_devnode *ad; 976 ACPI_DEVICE_INFO *di; 977 978 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) { 979 980 if (ad->ad_device != NULL) 981 continue; 982 983 /* 984 * There is a bug in ACPICA: it defines the type 985 * of the scopes incorrectly for its own reasons. 986 */ 987 if (acpi_is_scope(ad) != false) 988 continue; 989 990 di = ad->ad_devinfo; 991 992 /* 993 * We only attach devices which are present, enabled, and 994 * functioning properly. However, if a device is enabled, 995 * it is decoding resources and we should claim these, 996 * if possible. This requires changes to bus_space(9). 997 */ 998 if (di->Type == ACPI_TYPE_DEVICE && 999 !acpi_device_present(ad->ad_handle)) { 1000 continue; 1001 } 1002 1003 if (di->Type == ACPI_TYPE_POWER) 1004 continue; 1005 1006 if (di->Type == ACPI_TYPE_PROCESSOR) 1007 continue; 1008 1009 if (acpi_match_hid(di, acpi_early_ids) != 0) 1010 continue; 1011 1012 if (acpi_match_hid(di, acpi_ignored_ids) != 0) 1013 continue; 1014 1015 if (acpi_match_hid(di, hpet_ids) != 0 && sc->sc_hpet != NULL) 1016 continue; 1017 1018 KASSERT(ad->ad_handle != NULL); 1019 1020 aa.aa_node = ad; 1021 aa.aa_iot = sc->sc_iot; 1022 aa.aa_memt = sc->sc_memt; 1023 if (ad->ad_pciinfo != NULL) { 1024 aa.aa_pc = ad->ad_pciinfo->ap_pc; 1025 aa.aa_pciflags = sc->sc_pciflags; 1026 } 1027 aa.aa_ic = sc->sc_ic; 1028 aa.aa_dmat = ad->ad_dmat; 1029 aa.aa_dmat64 = ad->ad_dmat64; 1030 1031 ad->ad_device = config_found(sc->sc_dev, &aa, acpi_print, 1032 CFARGS(.iattr = "acpinodebus", 1033 .devhandle = devhandle_from_acpi(devhandle_invalid(), 1034 ad->ad_handle))); 1035 } 1036 } 1037 1038 static void 1039 acpi_rescan_capabilities(device_t self) 1040 { 1041 struct acpi_softc *sc = device_private(self); 1042 struct acpi_devnode *ad; 1043 ACPI_HANDLE tmp; 1044 ACPI_STATUS rv; 1045 1046 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) { 1047 1048 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 1049 continue; 1050 1051 /* 1052 * Scan power resource capabilities. 1053 * 1054 * If any power states are supported, 1055 * at least _PR0 and _PR3 must be present. 1056 */ 1057 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 1058 1059 if (ACPI_SUCCESS(rv)) { 1060 ad->ad_flags |= ACPI_DEVICE_POWER; 1061 acpi_power_add(ad); 1062 } 1063 1064 /* 1065 * Scan wake-up capabilities. 1066 */ 1067 if (ad->ad_wakedev != NULL) { 1068 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 1069 acpi_wakedev_add(ad); 1070 } 1071 1072 /* 1073 * Scan docking stations. 1074 */ 1075 rv = AcpiGetHandle(ad->ad_handle, "_DCK", &tmp); 1076 1077 if (ACPI_SUCCESS(rv)) 1078 ad->ad_flags |= ACPI_DEVICE_DOCK; 1079 1080 /* 1081 * Scan devices that are ejectable. 1082 */ 1083 rv = AcpiGetHandle(ad->ad_handle, "_EJ0", &tmp); 1084 1085 if (ACPI_SUCCESS(rv)) 1086 ad->ad_flags |= ACPI_DEVICE_EJECT; 1087 } 1088 } 1089 1090 static int 1091 acpi_print(void *aux, const char *pnp) 1092 { 1093 struct acpi_attach_args *aa = aux; 1094 struct acpi_devnode *ad; 1095 const char *hid, *uid; 1096 ACPI_DEVICE_INFO *di; 1097 1098 ad = aa->aa_node; 1099 di = ad->ad_devinfo; 1100 1101 hid = di->HardwareId.String; 1102 uid = di->UniqueId.String; 1103 1104 if (pnp != NULL) { 1105 1106 if (di->Type != ACPI_TYPE_DEVICE) { 1107 1108 aprint_normal("%s (ACPI Object Type '%s') at %s", 1109 ad->ad_name, AcpiUtGetTypeName(ad->ad_type), pnp); 1110 1111 return UNCONF; 1112 } 1113 1114 if ((di->Valid & ACPI_VALID_HID) == 0 || hid == NULL) 1115 return 0; 1116 1117 aprint_normal("%s (%s) ", ad->ad_name, hid); 1118 acpi_print_dev(hid); 1119 aprint_normal("at %s", pnp); 1120 1121 return UNCONF; 1122 } 1123 1124 aprint_normal(" (%s", ad->ad_name); 1125 1126 if ((di->Valid & ACPI_VALID_HID) != 0 && hid != NULL) { 1127 1128 aprint_normal(", %s", hid); 1129 1130 if ((di->Valid & ACPI_VALID_UID) != 0 && uid != NULL) { 1131 1132 if (uid[0] == '\0') 1133 uid = "<null>"; 1134 1135 aprint_normal("-%s", uid); 1136 } 1137 } 1138 1139 aprint_normal(")"); 1140 1141 return UNCONF; 1142 } 1143 1144 /* 1145 * Notify. 1146 */ 1147 static void 1148 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1149 { 1150 struct acpi_softc *sc = acpi_softc; 1151 struct acpi_devnode *ad; 1152 ACPI_NOTIFY_HANDLER notify; 1153 1154 KASSERT(sc != NULL); 1155 KASSERT(aux == NULL); 1156 KASSERT(acpi_active != 0); 1157 1158 if (acpi_suspended != 0) 1159 return; 1160 1161 /* 1162 * System: 0x00 - 0x7F. 1163 * Device: 0x80 - 0xFF. 1164 */ 1165 switch (event) { 1166 1167 case ACPI_NOTIFY_BUS_CHECK: 1168 case ACPI_NOTIFY_DEVICE_CHECK: 1169 case ACPI_NOTIFY_DEVICE_WAKE: 1170 case ACPI_NOTIFY_EJECT_REQUEST: 1171 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1172 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1173 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1174 case ACPI_NOTIFY_POWER_FAULT: 1175 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1176 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1177 case ACPI_NOTIFY_RESERVED: 1178 case ACPI_NOTIFY_LOCALITY_UPDATE: 1179 break; 1180 } 1181 1182 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1183 "%s (%p)\n", event, acpi_name(handle), handle)); 1184 1185 /* 1186 * We deliver notifications only to drivers 1187 * that have been successfully attached and 1188 * that have registered a handler with us. 1189 * The opaque pointer is always the device_t. 1190 */ 1191 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) { 1192 1193 if (ad->ad_device == NULL) 1194 continue; 1195 1196 if ((notify = atomic_load_acquire(&ad->ad_notify)) == NULL) 1197 continue; 1198 1199 if (ad->ad_handle != handle) 1200 continue; 1201 1202 (*notify)(ad->ad_handle, event, ad->ad_device); 1203 1204 return; 1205 } 1206 1207 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1208 "for %s (%p)\n", event, acpi_name(handle), handle); 1209 } 1210 1211 bool 1212 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1213 { 1214 struct acpi_softc *sc = acpi_softc; 1215 1216 KASSERT(sc != NULL); 1217 KASSERT(acpi_active != 0); 1218 1219 if (acpi_suspended != 0) 1220 goto fail; 1221 1222 if (ad == NULL || notify == NULL) 1223 goto fail; 1224 1225 KASSERTMSG(ad->ad_notify == NULL, 1226 "%s: ACPI node %s already has notify handler: %p", 1227 ad->ad_device ? device_xname(ad->ad_device) : "(unknown)", 1228 ad->ad_name, 1229 ad->ad_notify); 1230 atomic_store_release(&ad->ad_notify, notify); 1231 1232 return true; 1233 1234 fail: 1235 aprint_error_dev(sc->sc_dev, "failed to register notify " 1236 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1237 1238 return false; 1239 } 1240 1241 void 1242 acpi_deregister_notify(struct acpi_devnode *ad) 1243 { 1244 1245 atomic_store_relaxed(&ad->ad_notify, NULL); 1246 1247 /* Wait for any in-flight calls to the notifier to complete. */ 1248 AcpiOsWaitEventsComplete(); 1249 } 1250 1251 /* 1252 * Fixed buttons. 1253 */ 1254 static void 1255 acpi_register_fixed_button(struct acpi_softc *sc, int event) 1256 { 1257 struct sysmon_pswitch *smpsw; 1258 ACPI_STATUS rv; 1259 int type; 1260 1261 switch (event) { 1262 1263 case ACPI_EVENT_POWER_BUTTON: 1264 1265 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1266 return; 1267 1268 type = PSWITCH_TYPE_POWER; 1269 smpsw = &sc->sc_smpsw_power; 1270 break; 1271 1272 case ACPI_EVENT_SLEEP_BUTTON: 1273 1274 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1275 return; 1276 1277 type = PSWITCH_TYPE_SLEEP; 1278 smpsw = &sc->sc_smpsw_sleep; 1279 break; 1280 1281 default: 1282 rv = AE_TYPE; 1283 goto fail; 1284 } 1285 1286 smpsw->smpsw_type = type; 1287 smpsw->smpsw_name = device_xname(sc->sc_dev); 1288 1289 if (sysmon_pswitch_register(smpsw) != 0) { 1290 rv = AE_ERROR; 1291 goto fail; 1292 } 1293 1294 AcpiClearEvent(event); 1295 1296 rv = AcpiInstallFixedEventHandler(event, 1297 acpi_fixed_button_handler, smpsw); 1298 1299 if (ACPI_FAILURE(rv)) { 1300 sysmon_pswitch_unregister(smpsw); 1301 goto fail; 1302 } 1303 1304 aprint_normal_dev(sc->sc_dev, "fixed %s button present\n", 1305 (type != PSWITCH_TYPE_SLEEP) ? "power" : "sleep"); 1306 1307 return; 1308 1309 fail: 1310 aprint_error_dev(sc->sc_dev, "failed to register " 1311 "fixed event %d: %s\n", event, AcpiFormatException(rv)); 1312 } 1313 1314 static void 1315 acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1316 { 1317 struct sysmon_pswitch *smpsw; 1318 ACPI_STATUS rv; 1319 1320 switch (event) { 1321 1322 case ACPI_EVENT_POWER_BUTTON: 1323 smpsw = &sc->sc_smpsw_power; 1324 1325 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1326 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1327 return; 1328 } 1329 1330 break; 1331 1332 case ACPI_EVENT_SLEEP_BUTTON: 1333 smpsw = &sc->sc_smpsw_sleep; 1334 1335 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1336 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1337 return; 1338 } 1339 1340 break; 1341 1342 default: 1343 rv = AE_TYPE; 1344 goto fail; 1345 } 1346 1347 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1348 1349 if (ACPI_SUCCESS(rv)) { 1350 sysmon_pswitch_unregister(smpsw); 1351 return; 1352 } 1353 1354 fail: 1355 aprint_error_dev(sc->sc_dev, "failed to deregister " 1356 "fixed event: %s\n", AcpiFormatException(rv)); 1357 } 1358 1359 static uint32_t 1360 acpi_fixed_button_handler(void *context) 1361 { 1362 static const int handler = OSL_NOTIFY_HANDLER; 1363 struct sysmon_pswitch *smpsw = context; 1364 1365 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1366 1367 return ACPI_INTERRUPT_HANDLED; 1368 } 1369 1370 static void 1371 acpi_fixed_button_pressed(void *context) 1372 { 1373 struct sysmon_pswitch *smpsw = context; 1374 1375 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1376 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1377 "power" : "sleep")); 1378 1379 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1380 } 1381 1382 /* 1383 * Sleep. 1384 */ 1385 static void 1386 acpi_sleep_init(struct acpi_softc *sc) 1387 { 1388 uint8_t a, b, i; 1389 ACPI_STATUS rv; 1390 1391 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1392 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1393 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1394 1395 /* 1396 * Evaluate supported sleep states. 1397 */ 1398 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1399 1400 rv = AcpiGetSleepTypeData(i, &a, &b); 1401 1402 if (ACPI_SUCCESS(rv)) 1403 sc->sc_sleepstates |= __BIT(i); 1404 } 1405 } 1406 1407 /* 1408 * Must be called with interrupts enabled. 1409 */ 1410 void 1411 acpi_enter_sleep_state(int state) 1412 { 1413 struct acpi_softc *sc = acpi_softc; 1414 ACPI_STATUS rv; 1415 1416 if (acpi_softc == NULL) 1417 return; 1418 1419 if (state == sc->sc_sleepstate) 1420 return; 1421 1422 if (state < ACPI_STATE_S0 || state > ACPI_STATE_S5) 1423 return; 1424 1425 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1426 1427 switch (state) { 1428 1429 case ACPI_STATE_S0: 1430 sc->sc_sleepstate = ACPI_STATE_S0; 1431 return; 1432 1433 case ACPI_STATE_S1: 1434 case ACPI_STATE_S2: 1435 case ACPI_STATE_S3: 1436 case ACPI_STATE_S4: 1437 1438 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1439 aprint_error_dev(sc->sc_dev, "sleep state " 1440 "S%d is not available\n", state); 1441 return; 1442 } 1443 1444 /* 1445 * Evaluate the _TTS method. This should be done before 1446 * pmf_system_suspend(9) and the evaluation of _PTS. 1447 * We should also re-evaluate this once we return to 1448 * S0 or if we abort the sleep state transition in the 1449 * middle (see ACPI 3.0, section 7.3.6). In reality, 1450 * however, the _TTS method is seldom seen in the field. 1451 */ 1452 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1453 1454 if (ACPI_SUCCESS(rv)) 1455 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1456 1457 if (state != ACPI_STATE_S1 && 1458 pmf_system_suspend(PMF_Q_NONE) != true) { 1459 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1460 break; 1461 } 1462 1463 /* 1464 * This will evaluate the _PTS and _SST methods, 1465 * but unlike the documentation claims, not _GTS, 1466 * which is evaluated in AcpiEnterSleepState(). 1467 * This must be called with interrupts enabled. 1468 */ 1469 rv = AcpiEnterSleepStatePrep(state); 1470 1471 if (ACPI_FAILURE(rv)) { 1472 aprint_error_dev(sc->sc_dev, "failed to prepare " 1473 "S%d: %s\n", state, AcpiFormatException(rv)); 1474 break; 1475 } 1476 1477 /* 1478 * After the _PTS method has been evaluated, we can 1479 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1480 */ 1481 acpi_wakedev_commit(sc, state); 1482 1483 sc->sc_sleepstate = state; 1484 1485 if (state == ACPI_STATE_S1) { 1486 1487 /* 1488 * Before the transition to S1, CPU caches 1489 * must be flushed (see ACPI 4.0, 7.3.4.2). 1490 * 1491 * Note that interrupts must be off before 1492 * calling AcpiEnterSleepState(). Conversely, 1493 * AcpiLeaveSleepState() should always be 1494 * called with interrupts enabled. 1495 */ 1496 acpi_md_OsDisableInterrupt(); 1497 1498 ACPI_FLUSH_CPU_CACHE(); 1499 rv = AcpiEnterSleepState(state); 1500 1501 if (ACPI_FAILURE(rv)) 1502 aprint_error_dev(sc->sc_dev, "failed to " 1503 "enter S1: %s\n", AcpiFormatException(rv)); 1504 1505 /* 1506 * Clear fixed events and disable all GPEs before 1507 * interrupts are enabled. 1508 */ 1509 AcpiClearEvent(ACPI_EVENT_PMTIMER); 1510 AcpiClearEvent(ACPI_EVENT_GLOBAL); 1511 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON); 1512 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON); 1513 AcpiClearEvent(ACPI_EVENT_RTC); 1514 #if (!ACPI_REDUCED_HARDWARE) 1515 AcpiHwDisableAllGpes(); 1516 #endif 1517 1518 acpi_md_OsEnableInterrupt(); 1519 rv = AcpiLeaveSleepState(state); 1520 1521 } else { 1522 1523 (void)acpi_md_sleep(state); 1524 1525 if (state == ACPI_STATE_S4) 1526 AcpiEnable(); 1527 1528 (void)pmf_system_bus_resume(PMF_Q_NONE); 1529 (void)AcpiLeaveSleepState(state); 1530 (void)AcpiSetFirmwareWakingVector(0, 0); 1531 (void)pmf_system_resume(PMF_Q_NONE); 1532 } 1533 1534 /* 1535 * No wake GPEs should be enabled at runtime. 1536 */ 1537 acpi_wakedev_commit(sc, ACPI_STATE_S0); 1538 break; 1539 1540 case ACPI_STATE_S5: 1541 1542 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1543 1544 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1545 1546 if (ACPI_FAILURE(rv)) { 1547 aprint_error_dev(sc->sc_dev, "failed to prepare " 1548 "S%d: %s\n", state, AcpiFormatException(rv)); 1549 break; 1550 } 1551 1552 (void)AcpiDisableAllGpes(); 1553 1554 DELAY(1000000); 1555 1556 sc->sc_sleepstate = state; 1557 acpi_md_OsDisableInterrupt(); 1558 1559 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1560 1561 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1562 1563 break; 1564 } 1565 1566 sc->sc_sleepstate = ACPI_STATE_S0; 1567 1568 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1569 } 1570 1571 /* 1572 * Sysctl. 1573 */ 1574 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1575 { 1576 const struct sysctlnode *rnode, *snode; 1577 int err; 1578 1579 err = sysctl_createv(clog, 0, NULL, &rnode, 1580 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1581 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1582 NULL, 0, NULL, 0, 1583 CTL_HW, CTL_CREATE, CTL_EOL); 1584 1585 if (err != 0) 1586 return; 1587 1588 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1589 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1590 "root", SYSCTL_DESCR("ACPI root pointer"), 1591 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1592 CTL_CREATE, CTL_EOL); 1593 1594 err = sysctl_createv(clog, 0, &rnode, &snode, 1595 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1596 "sleep", SYSCTL_DESCR("ACPI sleep"), 1597 NULL, 0, NULL, 0, 1598 CTL_CREATE, CTL_EOL); 1599 1600 if (err != 0) 1601 return; 1602 1603 (void)sysctl_createv(NULL, 0, &snode, NULL, 1604 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1605 "state", SYSCTL_DESCR("System sleep state"), 1606 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1607 CTL_CREATE, CTL_EOL); 1608 1609 (void)sysctl_createv(NULL, 0, &snode, NULL, 1610 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1611 "states", SYSCTL_DESCR("Supported sleep states"), 1612 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1613 CTL_CREATE, CTL_EOL); 1614 1615 err = sysctl_createv(clog, 0, &rnode, &rnode, 1616 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1617 "stat", SYSCTL_DESCR("ACPI statistics"), 1618 NULL, 0, NULL, 0, 1619 CTL_CREATE, CTL_EOL); 1620 1621 if (err != 0) 1622 return; 1623 1624 (void)sysctl_createv(clog, 0, &rnode, NULL, 1625 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1626 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1627 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1628 CTL_CREATE, CTL_EOL); 1629 1630 (void)sysctl_createv(clog, 0, &rnode, NULL, 1631 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1632 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1633 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1634 CTL_CREATE, CTL_EOL); 1635 1636 (void)sysctl_createv(clog, 0, &rnode, NULL, 1637 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1638 "fixed", SYSCTL_DESCR("Number of fixed events"), 1639 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1640 CTL_CREATE, CTL_EOL); 1641 1642 (void)sysctl_createv(clog, 0, &rnode, NULL, 1643 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1644 "method", SYSCTL_DESCR("Number of methods executed"), 1645 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1646 CTL_CREATE, CTL_EOL); 1647 1648 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1649 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1650 } 1651 1652 static int 1653 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1654 { 1655 struct sysctlnode node; 1656 uint64_t t; 1657 int err, i; 1658 1659 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1660 t += AcpiFixedEventCount[i]; 1661 1662 node = *rnode; 1663 node.sysctl_data = &t; 1664 1665 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1666 1667 if (err || newp == NULL) 1668 return err; 1669 1670 return 0; 1671 } 1672 1673 static int 1674 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1675 { 1676 struct acpi_softc *sc = acpi_softc; 1677 struct sysctlnode node; 1678 int err, t; 1679 1680 if (acpi_softc == NULL) 1681 return ENOSYS; 1682 1683 node = *rnode; 1684 t = sc->sc_sleepstate; 1685 node.sysctl_data = &t; 1686 1687 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1688 1689 if (err || newp == NULL) 1690 return err; 1691 1692 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1693 return EINVAL; 1694 1695 acpi_enter_sleep_state(t); 1696 1697 return 0; 1698 } 1699 1700 static int 1701 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1702 { 1703 struct acpi_softc *sc = acpi_softc; 1704 struct sysctlnode node; 1705 char t[3 * 6 + 1]; 1706 int err; 1707 1708 if (acpi_softc == NULL) 1709 return ENOSYS; 1710 1711 (void)memset(t, '\0', sizeof(t)); 1712 1713 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1714 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1715 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1716 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1717 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1718 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1719 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1720 1721 node = *rnode; 1722 node.sysctl_data = &t; 1723 1724 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1725 1726 if (err || newp == NULL) 1727 return err; 1728 1729 return 0; 1730 } 1731 1732 /* 1733 * Tables. 1734 */ 1735 ACPI_PHYSICAL_ADDRESS 1736 acpi_OsGetRootPointer(void) 1737 { 1738 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1739 1740 /* 1741 * We let MD code handle this since there are multiple ways to do it: 1742 * 1743 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1744 * 1745 * IA-64: Use the EFI. 1746 */ 1747 PhysicalAddress = acpi_md_OsGetRootPointer(); 1748 1749 if (acpi_root_pointer == 0) 1750 acpi_root_pointer = PhysicalAddress; 1751 1752 return PhysicalAddress; 1753 } 1754 1755 static ACPI_TABLE_HEADER * 1756 acpi_map_rsdt(void) 1757 { 1758 ACPI_PHYSICAL_ADDRESS paddr; 1759 ACPI_TABLE_RSDP *rsdp; 1760 1761 paddr = AcpiOsGetRootPointer(); 1762 1763 if (paddr == 0) 1764 return NULL; 1765 1766 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1767 1768 if (rsdp == NULL) 1769 return NULL; 1770 1771 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1772 paddr = rsdp->XsdtPhysicalAddress; 1773 else 1774 paddr = rsdp->RsdtPhysicalAddress; 1775 1776 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1777 1778 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1779 } 1780 1781 /* 1782 * XXX: Refactor to be a generic function that unmaps tables. 1783 */ 1784 static void 1785 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1786 { 1787 1788 if (rsdt == NULL) 1789 return; 1790 1791 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1792 } 1793 1794 /* 1795 * XXX: Refactor to be a generic function that maps tables. 1796 */ 1797 ACPI_STATUS 1798 acpi_madt_map(void) 1799 { 1800 ACPI_STATUS rv; 1801 1802 if (madt_header != NULL) 1803 return AE_ALREADY_EXISTS; 1804 1805 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); 1806 1807 if (ACPI_FAILURE(rv)) 1808 return rv; 1809 1810 return AE_OK; 1811 } 1812 1813 void 1814 acpi_madt_unmap(void) 1815 { 1816 madt_header = NULL; 1817 } 1818 1819 ACPI_STATUS 1820 acpi_gtdt_map(void) 1821 { 1822 ACPI_STATUS rv; 1823 1824 if (gtdt_header != NULL) 1825 return AE_ALREADY_EXISTS; 1826 1827 rv = AcpiGetTable(ACPI_SIG_GTDT, 1, >dt_header); 1828 1829 if (ACPI_FAILURE(rv)) 1830 return rv; 1831 1832 return AE_OK; 1833 } 1834 1835 void 1836 acpi_gtdt_unmap(void) 1837 { 1838 gtdt_header = NULL; 1839 } 1840 1841 /* 1842 * XXX: Refactor to be a generic function that walks tables. 1843 */ 1844 void 1845 acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) 1846 { 1847 ACPI_SUBTABLE_HEADER *hdrp; 1848 char *madtend, *where; 1849 1850 madtend = (char *)madt_header + madt_header->Length; 1851 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); 1852 1853 while (where < madtend) { 1854 1855 hdrp = (ACPI_SUBTABLE_HEADER *)where; 1856 1857 if (hdrp->Length == 0 || ACPI_FAILURE(func(hdrp, aux))) 1858 break; 1859 1860 where += hdrp->Length; 1861 } 1862 } 1863 1864 void 1865 acpi_gtdt_walk(ACPI_STATUS (*func)(ACPI_GTDT_HEADER *, void *), void *aux) 1866 { 1867 ACPI_GTDT_HEADER *hdrp; 1868 char *gtdtend, *where; 1869 1870 gtdtend = (char *)gtdt_header + gtdt_header->Length; 1871 where = (char *)gtdt_header + sizeof (ACPI_TABLE_GTDT); 1872 1873 while (where < gtdtend) { 1874 1875 hdrp = (ACPI_GTDT_HEADER *)where; 1876 1877 if (hdrp->Length == 0 || ACPI_FAILURE(func(hdrp, aux))) 1878 break; 1879 1880 where += hdrp->Length; 1881 } 1882 } 1883 1884 /* 1885 * Miscellaneous. 1886 */ 1887 static bool 1888 acpi_is_scope(struct acpi_devnode *ad) 1889 { 1890 int i; 1891 1892 /* 1893 * Return true if the node is a root scope. 1894 */ 1895 if (ad->ad_parent == NULL) 1896 return false; 1897 1898 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1899 return false; 1900 1901 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1902 1903 if (acpi_scopes[i] == NULL) 1904 continue; 1905 1906 if (ad->ad_handle == acpi_scopes[i]) 1907 return true; 1908 } 1909 1910 return false; 1911 } 1912 1913 bool 1914 acpi_device_present(ACPI_HANDLE handle) 1915 { 1916 ACPI_STATUS rv; 1917 ACPI_INTEGER sta; 1918 1919 rv = acpi_eval_integer(handle, "_STA", &sta); 1920 1921 if (ACPI_FAILURE(rv)) { 1922 /* No _STA method -> must be there */ 1923 return rv == AE_NOT_FOUND; 1924 } 1925 1926 return (sta & ACPI_STA_OK) == ACPI_STA_OK; 1927 } 1928 1929 /* 1930 * ACPIVERBOSE. 1931 */ 1932 void 1933 acpi_load_verbose(void) 1934 { 1935 1936 if (acpi_verbose_loaded == 0) 1937 module_autoload("acpiverbose", MODULE_CLASS_MISC); 1938 } 1939 1940 void 1941 acpi_print_verbose_stub(struct acpi_softc *sc) 1942 { 1943 1944 acpi_load_verbose(); 1945 1946 if (acpi_verbose_loaded != 0) 1947 acpi_print_verbose(sc); 1948 } 1949 1950 void 1951 acpi_print_dev_stub(const char *pnpstr) 1952 { 1953 1954 acpi_load_verbose(); 1955 1956 if (acpi_verbose_loaded != 0) 1957 acpi_print_dev(pnpstr); 1958 } 1959 1960 MALLOC_DECLARE(M_ACPI); /* XXX: ACPI_ACTIVATE_DEV should use kmem(9). */ 1961 1962 /* 1963 * ACPI_ACTIVATE_DEV. 1964 */ 1965 static void 1966 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 1967 { 1968 1969 #ifndef ACPI_ACTIVATE_DEV 1970 return; 1971 } 1972 #else 1973 static const int valid = ACPI_VALID_HID; 1974 ACPI_DEVICE_INFO *newdi; 1975 ACPI_STATUS rv; 1976 1977 1978 /* 1979 * If the device is valid and present, 1980 * but not enabled, try to activate it. 1981 */ 1982 if (((*di)->Valid & valid) != valid) 1983 return; 1984 1985 if (!acpi_device_present(handle)) 1986 return; 1987 1988 rv = acpi_allocate_resources(handle); 1989 1990 if (ACPI_FAILURE(rv)) 1991 goto fail; 1992 1993 rv = AcpiGetObjectInfo(handle, &newdi); 1994 1995 if (ACPI_FAILURE(rv)) 1996 goto fail; 1997 1998 ACPI_FREE(*di); 1999 *di = newdi; 2000 2001 aprint_verbose_dev(acpi_softc->sc_dev, 2002 "%s activated\n", (*di)->HardwareId.String); 2003 2004 return; 2005 2006 fail: 2007 aprint_error_dev(acpi_softc->sc_dev, "failed to " 2008 "activate %s\n", (*di)->HardwareId.String); 2009 } 2010 2011 /* 2012 * XXX: This very incomplete. 2013 */ 2014 ACPI_STATUS 2015 acpi_allocate_resources(ACPI_HANDLE handle) 2016 { 2017 ACPI_BUFFER bufp, bufc, bufn; 2018 ACPI_RESOURCE *resp, *resc, *resn; 2019 ACPI_RESOURCE_IRQ *irq; 2020 #if 0 2021 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 2022 #endif 2023 ACPI_STATUS rv; 2024 uint delta; 2025 2026 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 2027 if (ACPI_FAILURE(rv)) 2028 goto out; 2029 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 2030 if (ACPI_FAILURE(rv)) { 2031 goto out1; 2032 } 2033 2034 bufn.Length = 1000; 2035 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 2036 resp = bufp.Pointer; 2037 resc = bufc.Pointer; 2038 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 2039 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 2040 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 2041 resp = ACPI_NEXT_RESOURCE(resp); 2042 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 2043 break; 2044 /* Found identical Id */ 2045 resn->Type = resc->Type; 2046 switch (resc->Type) { 2047 case ACPI_RESOURCE_TYPE_IRQ: 2048 memcpy(&resn->Data, &resp->Data, 2049 sizeof(ACPI_RESOURCE_IRQ)); 2050 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 2051 irq->Interrupts[0] = 2052 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 2053 Interrupts[irq->InterruptCount-1]; 2054 irq->InterruptCount = 1; 2055 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 2056 break; 2057 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 2058 memcpy(&resn->Data, &resp->Data, 2059 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 2060 #if 0 2061 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 2062 /* 2063 * XXX: Not duplicating the interrupt logic above 2064 * because its not clear what it accomplishes. 2065 */ 2066 xirq->Interrupts[0] = 2067 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 2068 Interrupts[irq->NumberOfInterrupts-1]; 2069 xirq->NumberOfInterrupts = 1; 2070 #endif 2071 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 2072 break; 2073 case ACPI_RESOURCE_TYPE_IO: 2074 memcpy(&resn->Data, &resp->Data, 2075 sizeof(ACPI_RESOURCE_IO)); 2076 resn->Length = resp->Length; 2077 break; 2078 default: 2079 aprint_error_dev(acpi_softc->sc_dev, 2080 "%s: invalid type %u\n", __func__, resc->Type); 2081 rv = AE_BAD_DATA; 2082 goto out2; 2083 } 2084 resc = ACPI_NEXT_RESOURCE(resc); 2085 resn = ACPI_NEXT_RESOURCE(resn); 2086 resp = ACPI_NEXT_RESOURCE(resp); 2087 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 2088 if (delta >= 2089 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 2090 bufn.Length *= 2; 2091 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 2092 M_ACPI, M_WAITOK); 2093 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 2094 delta); 2095 } 2096 } 2097 2098 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 2099 aprint_error_dev(acpi_softc->sc_dev, 2100 "%s: resc not exhausted\n", __func__); 2101 rv = AE_BAD_DATA; 2102 goto out3; 2103 } 2104 2105 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 2106 rv = AcpiSetCurrentResources(handle, &bufn); 2107 2108 if (ACPI_FAILURE(rv)) 2109 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 2110 "resources: %s\n", __func__, AcpiFormatException(rv)); 2111 2112 out3: 2113 free(bufn.Pointer, M_ACPI); 2114 out2: 2115 ACPI_FREE(bufc.Pointer); 2116 out1: 2117 ACPI_FREE(bufp.Pointer); 2118 out: 2119 return rv; 2120 } 2121 2122 #endif /* ACPI_ACTIVATE_DEV */ 2123