acpi.c revision 1.290.2.2
1 /* $NetBSD: acpi.c,v 1.290.2.2 2021/04/02 22:17:43 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2003, 2007 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum of By Noon Software, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 2003 Wasabi Systems, Inc. 34 * All rights reserved. 35 * 36 * Written by Frank van der Linden for Wasabi Systems, Inc. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed for the NetBSD Project by 49 * Wasabi Systems, Inc. 50 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 51 * or promote products derived from this software without specific prior 52 * written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 56 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 57 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 58 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 59 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 60 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 61 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 62 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 63 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 64 * POSSIBILITY OF SUCH DAMAGE. 65 */ 66 67 /* 68 * Copyright 2001, 2003 Wasabi Systems, Inc. 69 * All rights reserved. 70 * 71 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 72 * 73 * Redistribution and use in source and binary forms, with or without 74 * modification, are permitted provided that the following conditions 75 * are met: 76 * 1. Redistributions of source code must retain the above copyright 77 * notice, this list of conditions and the following disclaimer. 78 * 2. Redistributions in binary form must reproduce the above copyright 79 * notice, this list of conditions and the following disclaimer in the 80 * documentation and/or other materials provided with the distribution. 81 * 3. All advertising materials mentioning features or use of this software 82 * must display the following acknowledgement: 83 * This product includes software developed for the NetBSD Project by 84 * Wasabi Systems, Inc. 85 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 86 * or promote products derived from this software without specific prior 87 * written permission. 88 * 89 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 90 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 91 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 92 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 93 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 94 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 95 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 96 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 97 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 98 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 99 * POSSIBILITY OF SUCH DAMAGE. 100 */ 101 102 #include <sys/cdefs.h> 103 __KERNEL_RCSID(0, "$NetBSD: acpi.c,v 1.290.2.2 2021/04/02 22:17:43 thorpej Exp $"); 104 105 #include "pci.h" 106 #include "opt_acpi.h" 107 #include "opt_pcifixup.h" 108 109 #include <sys/param.h> 110 #include <sys/device.h> 111 #include <sys/kernel.h> 112 #include <sys/kmem.h> 113 #include <sys/malloc.h> 114 #include <sys/module.h> 115 #include <sys/mutex.h> 116 #include <sys/sysctl.h> 117 #include <sys/systm.h> 118 #include <sys/timetc.h> 119 120 #include <dev/acpi/acpireg.h> 121 #include <dev/acpi/acpivar.h> 122 #include <dev/acpi/acpi_mcfg.h> 123 #include <dev/acpi/acpi_osd.h> 124 #include <dev/acpi/acpi_pci.h> 125 #include <dev/acpi/acpi_power.h> 126 #include <dev/acpi/acpi_timer.h> 127 #include <dev/acpi/acpi_wakedev.h> 128 129 #include <machine/acpi_machdep.h> 130 131 #include "ioconf.h" 132 133 #define _COMPONENT ACPI_BUS_COMPONENT 134 ACPI_MODULE_NAME ("acpi") 135 136 /* 137 * The acpi_active variable is set when the ACPI subsystem is active. 138 * Machine-dependent code may wish to skip other steps (such as attaching 139 * subsystems that ACPI supercedes) when ACPI is active. 140 */ 141 int acpi_active = 0; 142 int acpi_suspended = 0; 143 int acpi_force_load = 0; 144 int acpi_verbose_loaded = 0; 145 146 struct acpi_softc *acpi_softc = NULL; 147 static uint64_t acpi_root_pointer; 148 extern kmutex_t acpi_interrupt_list_mtx; 149 static ACPI_HANDLE acpi_scopes[4]; 150 ACPI_TABLE_HEADER *madt_header; 151 ACPI_TABLE_HEADER *gtdt_header; 152 153 /* 154 * This structure provides a context for the ACPI 155 * namespace walk performed in acpi_build_tree(). 156 */ 157 struct acpi_walkcontext { 158 struct acpi_softc *aw_sc; 159 struct acpi_devnode *aw_parent; 160 }; 161 162 /* 163 * Ignored HIDs. 164 */ 165 static const char * const acpi_ignored_ids[] = { 166 #if defined(i386) || defined(x86_64) 167 "ACPI0007", /* ACPI CPUs do not attach to acpi(4) */ 168 "PNP0000", /* AT interrupt controller is handled internally */ 169 "PNP0001", /* EISA interrupt controller is handled internally */ 170 "PNP0200", /* AT DMA controller is handled internally */ 171 "PNP0A??", /* PCI Busses are handled internally */ 172 "PNP0B00", /* AT RTC is handled internally */ 173 "PNP0C02", /* PnP motherboard resources */ 174 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 175 #endif 176 #if defined(x86_64) 177 "PNP0C04", /* FPU is handled internally */ 178 #endif 179 #if defined(__aarch64__) 180 "ACPI0004", /* ACPI module devices are handled internally */ 181 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 182 #endif 183 NULL 184 }; 185 186 /* 187 * Devices that should be attached early. 188 */ 189 static const char * const acpi_early_ids[] = { 190 "PNP0C09", /* acpiec(4) */ 191 NULL 192 }; 193 194 static int acpi_match(device_t, cfdata_t, void *); 195 static int acpi_submatch(device_t, cfdata_t, const int *, void *); 196 static void acpi_attach(device_t, device_t, void *); 197 static int acpi_detach(device_t, int); 198 static void acpi_childdet(device_t, device_t); 199 static bool acpi_suspend(device_t, const pmf_qual_t *); 200 static bool acpi_resume(device_t, const pmf_qual_t *); 201 202 static void acpi_build_tree(struct acpi_softc *); 203 static void acpi_config_tree(struct acpi_softc *); 204 static void acpi_config_dma(struct acpi_softc *); 205 static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, 206 void *, void **); 207 static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t, 208 void *, void **); 209 static void acpi_make_name(struct acpi_devnode *, uint32_t); 210 211 static int acpi_rescan(device_t, const char *, const int *); 212 static void acpi_rescan_early(struct acpi_softc *); 213 static void acpi_rescan_nodes(struct acpi_softc *); 214 static void acpi_rescan_capabilities(device_t); 215 static int acpi_print(void *aux, const char *); 216 217 static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); 218 219 static void acpi_register_fixed_button(struct acpi_softc *, int); 220 static void acpi_deregister_fixed_button(struct acpi_softc *, int); 221 static uint32_t acpi_fixed_button_handler(void *); 222 static void acpi_fixed_button_pressed(void *); 223 224 static void acpi_sleep_init(struct acpi_softc *); 225 226 static int sysctl_hw_acpi_fixedstats(SYSCTLFN_PROTO); 227 static int sysctl_hw_acpi_sleepstate(SYSCTLFN_PROTO); 228 static int sysctl_hw_acpi_sleepstates(SYSCTLFN_PROTO); 229 230 static bool acpi_is_scope(struct acpi_devnode *); 231 static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 232 static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 233 234 void acpi_print_verbose_stub(struct acpi_softc *); 235 void acpi_print_dev_stub(const char *); 236 237 static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **); 238 ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE); 239 240 void (*acpi_print_verbose)(struct acpi_softc *) = acpi_print_verbose_stub; 241 void (*acpi_print_dev)(const char *) = acpi_print_dev_stub; 242 243 bus_dma_tag_t acpi_default_dma_tag(struct acpi_softc *, struct acpi_devnode *); 244 bus_dma_tag_t acpi_default_dma64_tag(struct acpi_softc *, struct acpi_devnode *); 245 pci_chipset_tag_t acpi_default_pci_chipset_tag(struct acpi_softc *, int, int); 246 247 CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 248 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 249 250 /* 251 * Probe for ACPI support. 252 * 253 * This is called by the machine-dependent ACPI front-end. 254 * Note: this is not an autoconfiguration interface function. 255 */ 256 int 257 acpi_probe(void) 258 { 259 ACPI_TABLE_HEADER *rsdt; 260 ACPI_STATUS rv; 261 int quirks; 262 263 if (acpi_softc != NULL) 264 panic("%s: already probed", __func__); 265 266 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 267 268 /* 269 * Start up ACPICA. 270 */ 271 AcpiGbl_EnableInterpreterSlack = true; 272 273 rv = AcpiInitializeSubsystem(); 274 275 if (ACPI_FAILURE(rv)) { 276 aprint_error("%s: failed to initialize subsystem\n", __func__); 277 return 0; 278 } 279 280 /* 281 * Allocate space for RSDT/XSDT and DSDT, 282 * but allow resizing if more tables exist. 283 */ 284 rv = AcpiInitializeTables(NULL, 2, true); 285 286 if (ACPI_FAILURE(rv)) { 287 aprint_error("%s: failed to initialize tables\n", __func__); 288 goto fail; 289 } 290 291 rv = AcpiLoadTables(); 292 293 if (ACPI_FAILURE(rv)) { 294 aprint_error("%s: failed to load tables\n", __func__); 295 goto fail; 296 } 297 298 rsdt = acpi_map_rsdt(); 299 300 if (rsdt == NULL) { 301 aprint_error("%s: failed to map RSDT\n", __func__); 302 goto fail; 303 } 304 305 quirks = acpi_find_quirks(); 306 307 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_BROKEN) != 0) { 308 309 aprint_normal("ACPI: BIOS is listed as broken:\n"); 310 aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 311 "AslId <%4.4s,%08x>\n", rsdt->OemId, rsdt->OemTableId, 312 rsdt->OemRevision, rsdt->AslCompilerId, 313 rsdt->AslCompilerRevision); 314 aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n"); 315 316 acpi_unmap_rsdt(rsdt); 317 goto fail; 318 } 319 320 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_OLDBIOS) != 0) { 321 322 aprint_normal("ACPI: BIOS is too old (%s). " 323 "Set acpi_force_load to use.\n", 324 pmf_get_platform("bios-date")); 325 326 acpi_unmap_rsdt(rsdt); 327 goto fail; 328 } 329 330 acpi_unmap_rsdt(rsdt); 331 332 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 333 334 if (ACPI_FAILURE(rv)) { 335 aprint_error("%s: failed to enable subsystem\n", __func__); 336 goto fail; 337 } 338 339 return 1; 340 341 fail: 342 (void)AcpiTerminate(); 343 344 return 0; 345 } 346 347 void 348 acpi_disable(void) 349 { 350 351 if (acpi_softc == NULL) 352 return; 353 354 KASSERT(acpi_active != 0); 355 356 if (AcpiGbl_FADT.SmiCommand != 0) 357 AcpiDisable(); 358 } 359 360 int 361 acpi_check(device_t parent, const char *ifattr) 362 { 363 return config_search(parent, NULL, 364 CFARG_SUBMATCH, acpi_submatch, 365 CFARG_IATTR, ifattr, 366 CFARG_EOL) != 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->ad_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 CFARG_IATTR, "acpiecdtbus", 496 CFARG_EOL); 497 498 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 499 500 if (ACPI_FAILURE(rv)) 501 goto fail; 502 503 /* 504 * Scan the namespace and build our device tree. 505 */ 506 acpi_build_tree(sc); 507 508 #if NPCI > 0 509 /* 510 * Probe MCFG table 511 */ 512 acpimcfg_probe(sc); 513 #endif 514 515 acpi_md_callback(sc); 516 517 /* 518 * Early initialization of the _PDC control method 519 * that may load additional SSDT tables dynamically. 520 */ 521 (void)acpi_md_pdc(); 522 523 /* 524 * Install global notify handlers. 525 */ 526 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 527 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 528 529 if (ACPI_FAILURE(rv)) 530 goto fail; 531 532 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 533 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 534 535 if (ACPI_FAILURE(rv)) 536 goto fail; 537 538 acpi_active = 1; 539 540 if (!AcpiGbl_ReducedHardware) { 541 /* Show SCI interrupt. */ 542 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 543 AcpiGbl_FADT.SciInterrupt); 544 545 /* 546 * Install fixed-event handlers. 547 */ 548 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 549 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 550 } 551 552 /* 553 * Load drivers that operate on System Description Tables. 554 */ 555 for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i) { 556 rv = AcpiGetTableByIndex(i, &hdr); 557 if (ACPI_FAILURE(rv)) { 558 continue; 559 } 560 config_found(sc->sc_dev, hdr, NULL, 561 CFARG_IATTR, "acpisdtbus", 562 CFARG_EOL); 563 AcpiPutTable(hdr); 564 } 565 566 acpitimer_init(sc); 567 acpi_config_tree(sc); 568 acpi_sleep_init(sc); 569 570 #ifdef ACPI_DEBUG 571 acpi_debug_init(); 572 #endif 573 574 /* 575 * Print debug information. 576 */ 577 acpi_print_verbose(sc); 578 579 return; 580 581 fail: 582 aprint_error("%s: failed to initialize ACPI: %s\n", 583 __func__, AcpiFormatException(rv)); 584 } 585 586 /* 587 * XXX: This is incomplete. 588 */ 589 static int 590 acpi_detach(device_t self, int flags) 591 { 592 struct acpi_softc *sc = device_private(self); 593 ACPI_STATUS rv; 594 int rc; 595 596 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 597 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 598 599 if (ACPI_FAILURE(rv)) 600 return EBUSY; 601 602 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 603 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 604 605 if (ACPI_FAILURE(rv)) 606 return EBUSY; 607 608 if ((rc = config_detach_children(self, flags)) != 0) 609 return rc; 610 611 if ((rc = acpitimer_detach()) != 0) 612 return rc; 613 614 if (!AcpiGbl_ReducedHardware) { 615 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 616 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 617 } 618 619 pmf_device_deregister(self); 620 621 acpi_softc = NULL; 622 623 return 0; 624 } 625 626 static void 627 acpi_childdet(device_t self, device_t child) 628 { 629 struct acpi_softc *sc = device_private(self); 630 struct acpi_devnode *ad; 631 632 if (sc->sc_apmbus == child) 633 sc->sc_apmbus = NULL; 634 635 if (sc->sc_hpet == child) 636 sc->sc_hpet = NULL; 637 638 if (sc->sc_wdrt == child) 639 sc->sc_wdrt = NULL; 640 641 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 642 643 if (ad->ad_device == child) 644 ad->ad_device = NULL; 645 } 646 } 647 648 static bool 649 acpi_suspend(device_t dv, const pmf_qual_t *qual) 650 { 651 652 acpi_suspended = 1; 653 654 return true; 655 } 656 657 static bool 658 acpi_resume(device_t dv, const pmf_qual_t *qual) 659 { 660 661 acpi_suspended = 0; 662 663 return true; 664 } 665 666 /* 667 * Namespace scan. 668 */ 669 static void 670 acpi_build_tree(struct acpi_softc *sc) 671 { 672 struct acpi_walkcontext awc; 673 674 /* 675 * Get the root scope handles. 676 */ 677 KASSERT(__arraycount(acpi_scopes) == 4); 678 679 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 680 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 681 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 682 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 683 684 /* 685 * Make the root node. 686 */ 687 awc.aw_sc = sc; 688 awc.aw_parent = NULL; 689 690 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 691 692 KASSERT(sc->sc_root == NULL); 693 KASSERT(awc.aw_parent != NULL); 694 695 sc->sc_root = awc.aw_parent; 696 697 /* 698 * Build the internal namespace. 699 */ 700 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 701 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 702 703 /* 704 * Scan the internal namespace. 705 */ 706 (void)acpi_pcidev_scan(sc->sc_root); 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 static void 737 acpi_config_dma(struct acpi_softc *sc) 738 { 739 struct acpi_devnode *ad; 740 741 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 742 743 if (ad->ad_device != NULL) 744 continue; 745 746 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 747 continue; 748 749 ad->ad_dmat = acpi_get_dma_tag(sc, ad); 750 ad->ad_dmat64 = acpi_get_dma64_tag(sc, ad); 751 } 752 } 753 754 static ACPI_STATUS 755 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 756 void *context, void **status) 757 { 758 struct acpi_walkcontext *awc = context; 759 struct acpi_softc *sc = awc->aw_sc; 760 struct acpi_devnode *ad; 761 ACPI_DEVICE_INFO *devinfo; 762 ACPI_OBJECT_TYPE type; 763 ACPI_STATUS rv; 764 765 rv = AcpiGetObjectInfo(handle, &devinfo); 766 767 if (ACPI_FAILURE(rv)) 768 return AE_OK; /* Do not terminate the walk. */ 769 770 type = devinfo->Type; 771 772 switch (type) { 773 774 case ACPI_TYPE_DEVICE: 775 acpi_activate_device(handle, &devinfo); 776 /* FALLTHROUGH */ 777 778 case ACPI_TYPE_PROCESSOR: 779 case ACPI_TYPE_THERMAL: 780 case ACPI_TYPE_POWER: 781 782 ad = kmem_zalloc(sizeof(*ad), KM_SLEEP); 783 784 ad->ad_device = NULL; 785 ad->ad_notify = NULL; 786 ad->ad_pciinfo = NULL; 787 ad->ad_wakedev = NULL; 788 789 ad->ad_type = type; 790 ad->ad_handle = handle; 791 ad->ad_devinfo = devinfo; 792 793 ad->ad_root = sc->sc_dev; 794 ad->ad_parent = awc->aw_parent; 795 796 acpi_match_node_init(ad); 797 acpi_make_name(ad, devinfo->Name); 798 799 /* 800 * Identify wake GPEs from the _PRW. Note that 801 * AcpiUpdateAllGpes() must be called afterwards. 802 */ 803 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) 804 acpi_wakedev_init(ad); 805 806 SIMPLEQ_INIT(&ad->ad_child_head); 807 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 808 809 if (ad->ad_parent != NULL) { 810 811 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 812 ad, ad_child_list); 813 } 814 815 awc->aw_parent = ad; 816 break; 817 818 default: 819 ACPI_FREE(devinfo); 820 break; 821 } 822 823 return AE_OK; 824 } 825 826 static ACPI_STATUS 827 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 828 void *context, void **status) 829 { 830 struct acpi_walkcontext *awc = context; 831 832 KASSERT(awc != NULL); 833 KASSERT(awc->aw_parent != NULL); 834 835 if (handle == awc->aw_parent->ad_handle) 836 awc->aw_parent = awc->aw_parent->ad_parent; 837 838 return AE_OK; 839 } 840 841 static void 842 acpi_make_name(struct acpi_devnode *ad, uint32_t name) 843 { 844 ACPI_NAME_UNION *anu; 845 int clear, i; 846 847 anu = (ACPI_NAME_UNION *)&name; 848 ad->ad_name[4] = '\0'; 849 850 for (i = 3, clear = 0; i >= 0; i--) { 851 852 if (clear == 0 && anu->Ascii[i] == '_') 853 ad->ad_name[i] = '\0'; 854 else { 855 ad->ad_name[i] = anu->Ascii[i]; 856 clear = 1; 857 } 858 } 859 860 if (ad->ad_name[0] == '\0') 861 ad->ad_name[0] = '_'; 862 } 863 864 bus_dma_tag_t 865 acpi_default_dma_tag(struct acpi_softc *sc, struct acpi_devnode *ad) 866 { 867 return sc->sc_dmat; 868 } 869 __weak_alias(acpi_get_dma_tag,acpi_default_dma_tag); 870 871 bus_dma_tag_t 872 acpi_default_dma64_tag(struct acpi_softc *sc, struct acpi_devnode *ad) 873 { 874 return sc->sc_dmat64; 875 } 876 __weak_alias(acpi_get_dma64_tag,acpi_default_dma64_tag); 877 878 pci_chipset_tag_t 879 acpi_default_pci_chipset_tag(struct acpi_softc *sc, int seg, int bbn) 880 { 881 return NULL; 882 } 883 __weak_alias(acpi_get_pci_chipset_tag,acpi_default_pci_chipset_tag); 884 885 /* 886 * Device attachment. 887 */ 888 static int 889 acpi_rescan(device_t self, const char *ifattr, const int *locators) 890 { 891 struct acpi_softc *sc = device_private(self); 892 struct acpi_attach_args aa; 893 894 /* 895 * Try to attach hpet(4) first via a specific table. 896 */ 897 aa.aa_memt = sc->sc_memt; 898 899 if (ifattr_match(ifattr, "acpihpetbus") && sc->sc_hpet == NULL) { 900 sc->sc_hpet = config_found(sc->sc_dev, &aa, NULL, 901 CFARG_IATTR, "acpihpetbus", 902 CFARG_EOL); 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 CFARG_IATTR, "acpiapmbus", 919 CFARG_EOL); 920 } 921 922 if (ifattr_match(ifattr, "acpiwdrtbus") && sc->sc_wdrt == NULL) { 923 sc->sc_wdrt = config_found(sc->sc_dev, NULL, NULL, 924 CFARG_IATTR, "acpiwdrtbus", 925 CFARG_EOL); 926 } 927 928 return 0; 929 } 930 931 static void 932 acpi_rescan_early(struct acpi_softc *sc) 933 { 934 struct acpi_attach_args aa; 935 struct acpi_devnode *ad; 936 937 /* 938 * First scan for devices such as acpiec(4) that 939 * should be always attached before anything else. 940 * We want these devices to attach regardless of 941 * the device status and other restrictions. 942 */ 943 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 944 945 if (ad->ad_device != NULL) 946 continue; 947 948 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 949 continue; 950 951 if (acpi_match_hid(ad->ad_devinfo, acpi_early_ids) == 0) 952 continue; 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 CFARG_IATTR, "acpinodebus", 967 CFARG_EOL); 968 } 969 } 970 971 static void 972 acpi_rescan_nodes(struct acpi_softc *sc) 973 { 974 const char * const hpet_ids[] = { "PNP0103", NULL }; 975 struct acpi_attach_args aa; 976 struct acpi_devnode *ad; 977 ACPI_DEVICE_INFO *di; 978 979 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 980 981 if (ad->ad_device != NULL) 982 continue; 983 984 /* 985 * There is a bug in ACPICA: it defines the type 986 * of the scopes incorrectly for its own reasons. 987 */ 988 if (acpi_is_scope(ad) != false) 989 continue; 990 991 di = ad->ad_devinfo; 992 993 /* 994 * We only attach devices which are present, enabled, and 995 * functioning properly. However, if a device is enabled, 996 * it is decoding resources and we should claim these, 997 * if possible. This requires changes to bus_space(9). 998 */ 999 if (di->Type == ACPI_TYPE_DEVICE && 1000 !acpi_device_present(ad->ad_handle)) { 1001 continue; 1002 } 1003 1004 if (di->Type == ACPI_TYPE_POWER) 1005 continue; 1006 1007 if (di->Type == ACPI_TYPE_PROCESSOR) 1008 continue; 1009 1010 if (acpi_match_hid(di, acpi_early_ids) != 0) 1011 continue; 1012 1013 if (acpi_match_hid(di, acpi_ignored_ids) != 0) 1014 continue; 1015 1016 if (acpi_match_hid(di, hpet_ids) != 0 && sc->sc_hpet != NULL) 1017 continue; 1018 1019 aa.aa_node = ad; 1020 aa.aa_iot = sc->sc_iot; 1021 aa.aa_memt = sc->sc_memt; 1022 if (ad->ad_pciinfo != NULL) { 1023 aa.aa_pc = ad->ad_pciinfo->ap_pc; 1024 aa.aa_pciflags = sc->sc_pciflags; 1025 } 1026 aa.aa_ic = sc->sc_ic; 1027 aa.aa_dmat = ad->ad_dmat; 1028 aa.aa_dmat64 = ad->ad_dmat64; 1029 1030 ad->ad_device = config_found(sc->sc_dev, &aa, acpi_print, 1031 CFARG_IATTR, "acpinodebus", 1032 CFARG_EOL); 1033 } 1034 } 1035 1036 static void 1037 acpi_rescan_capabilities(device_t self) 1038 { 1039 struct acpi_softc *sc = device_private(self); 1040 struct acpi_devnode *ad; 1041 ACPI_HANDLE tmp; 1042 ACPI_STATUS rv; 1043 1044 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1045 1046 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 1047 continue; 1048 1049 /* 1050 * Scan power resource capabilities. 1051 * 1052 * If any power states are supported, 1053 * at least _PR0 and _PR3 must be present. 1054 */ 1055 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 1056 1057 if (ACPI_SUCCESS(rv)) { 1058 ad->ad_flags |= ACPI_DEVICE_POWER; 1059 acpi_power_add(ad); 1060 } 1061 1062 /* 1063 * Scan wake-up capabilities. 1064 */ 1065 if (ad->ad_wakedev != NULL) { 1066 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 1067 acpi_wakedev_add(ad); 1068 } 1069 1070 /* 1071 * Scan docking stations. 1072 */ 1073 rv = AcpiGetHandle(ad->ad_handle, "_DCK", &tmp); 1074 1075 if (ACPI_SUCCESS(rv)) 1076 ad->ad_flags |= ACPI_DEVICE_DOCK; 1077 1078 /* 1079 * Scan devices that are ejectable. 1080 */ 1081 rv = AcpiGetHandle(ad->ad_handle, "_EJ0", &tmp); 1082 1083 if (ACPI_SUCCESS(rv)) 1084 ad->ad_flags |= ACPI_DEVICE_EJECT; 1085 } 1086 } 1087 1088 static int 1089 acpi_print(void *aux, const char *pnp) 1090 { 1091 struct acpi_attach_args *aa = aux; 1092 struct acpi_devnode *ad; 1093 const char *hid, *uid; 1094 ACPI_DEVICE_INFO *di; 1095 1096 ad = aa->aa_node; 1097 di = ad->ad_devinfo; 1098 1099 hid = di->HardwareId.String; 1100 uid = di->UniqueId.String; 1101 1102 if (pnp != NULL) { 1103 1104 if (di->Type != ACPI_TYPE_DEVICE) { 1105 1106 aprint_normal("%s (ACPI Object Type '%s') at %s", 1107 ad->ad_name, AcpiUtGetTypeName(ad->ad_type), pnp); 1108 1109 return UNCONF; 1110 } 1111 1112 if ((di->Valid & ACPI_VALID_HID) == 0 || hid == NULL) 1113 return 0; 1114 1115 aprint_normal("%s (%s) ", ad->ad_name, hid); 1116 acpi_print_dev(hid); 1117 aprint_normal("at %s", pnp); 1118 1119 return UNCONF; 1120 } 1121 1122 aprint_normal(" (%s", ad->ad_name); 1123 1124 if ((di->Valid & ACPI_VALID_HID) != 0 && hid != NULL) { 1125 1126 aprint_normal(", %s", hid); 1127 1128 if ((di->Valid & ACPI_VALID_UID) != 0 && uid != NULL) { 1129 1130 if (uid[0] == '\0') 1131 uid = "<null>"; 1132 1133 aprint_normal("-%s", uid); 1134 } 1135 } 1136 1137 aprint_normal(")"); 1138 1139 return UNCONF; 1140 } 1141 1142 /* 1143 * acpi_device_register -- 1144 * Called by the platform device_register() routine when 1145 * attaching devices. 1146 */ 1147 void 1148 acpi_device_register(device_t dev, void *v) 1149 { 1150 /* All we do here is set the devhandle in the device_t. */ 1151 device_t parent = device_parent(dev); 1152 ACPI_HANDLE hdl = NULL; 1153 1154 /* 1155 * aa_node is only valid if we attached to the "acpinodebus" 1156 * interface attribute. 1157 */ 1158 if (device_attached_to_iattr(dev, "acpinodebus")) { 1159 const struct acpi_attach_args *aa = v; 1160 hdl = aa->aa_node->ad_handle; 1161 } else if (device_is_a(parent, "pci")) { 1162 const struct pci_attach_args *pa = v; 1163 struct acpi_devnode *ad; 1164 u_int segment; 1165 1166 #ifdef __HAVE_PCI_GET_SEGMENT 1167 segment = pci_get_segment(pa->pa_pc); 1168 #else 1169 segment = 0; 1170 #endif /* __HAVE_PCI_GET_SEGMENT */ 1171 1172 ad = acpi_pcidev_find(segment, 1173 pa->pa_bus, pa->pa_device, pa->pa_function); 1174 if (ad == NULL || (hdl = ad->ad_handle) == NULL) { 1175 aprint_debug_dev(dev, "no matching ACPI node\n"); 1176 return; 1177 } 1178 } else { 1179 return; 1180 } 1181 KASSERT(hdl != NULL); 1182 1183 device_set_handle(dev, devhandle_from_acpi(hdl)); 1184 } 1185 1186 /* 1187 * Notify. 1188 */ 1189 static void 1190 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1191 { 1192 struct acpi_softc *sc = acpi_softc; 1193 struct acpi_devnode *ad; 1194 1195 KASSERT(sc != NULL); 1196 KASSERT(aux == NULL); 1197 KASSERT(acpi_active != 0); 1198 1199 if (acpi_suspended != 0) 1200 return; 1201 1202 /* 1203 * System: 0x00 - 0x7F. 1204 * Device: 0x80 - 0xFF. 1205 */ 1206 switch (event) { 1207 1208 case ACPI_NOTIFY_BUS_CHECK: 1209 case ACPI_NOTIFY_DEVICE_CHECK: 1210 case ACPI_NOTIFY_DEVICE_WAKE: 1211 case ACPI_NOTIFY_EJECT_REQUEST: 1212 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1213 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1214 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1215 case ACPI_NOTIFY_POWER_FAULT: 1216 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1217 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1218 case ACPI_NOTIFY_RESERVED: 1219 case ACPI_NOTIFY_LOCALITY_UPDATE: 1220 break; 1221 } 1222 1223 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1224 "%s (%p)\n", event, acpi_name(handle), handle)); 1225 1226 /* 1227 * We deliver notifications only to drivers 1228 * that have been successfully attached and 1229 * that have registered a handler with us. 1230 * The opaque pointer is always the device_t. 1231 */ 1232 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1233 1234 if (ad->ad_device == NULL) 1235 continue; 1236 1237 if (ad->ad_notify == NULL) 1238 continue; 1239 1240 if (ad->ad_handle != handle) 1241 continue; 1242 1243 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1244 1245 return; 1246 } 1247 1248 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1249 "for %s (%p)\n", event, acpi_name(handle), handle); 1250 } 1251 1252 bool 1253 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1254 { 1255 struct acpi_softc *sc = acpi_softc; 1256 1257 KASSERT(sc != NULL); 1258 KASSERT(acpi_active != 0); 1259 1260 if (acpi_suspended != 0) 1261 goto fail; 1262 1263 if (ad == NULL || notify == NULL) 1264 goto fail; 1265 1266 ad->ad_notify = notify; 1267 1268 return true; 1269 1270 fail: 1271 aprint_error_dev(sc->sc_dev, "failed to register notify " 1272 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1273 1274 return false; 1275 } 1276 1277 void 1278 acpi_deregister_notify(struct acpi_devnode *ad) 1279 { 1280 1281 ad->ad_notify = NULL; 1282 } 1283 1284 /* 1285 * Fixed buttons. 1286 */ 1287 static void 1288 acpi_register_fixed_button(struct acpi_softc *sc, int event) 1289 { 1290 struct sysmon_pswitch *smpsw; 1291 ACPI_STATUS rv; 1292 int type; 1293 1294 switch (event) { 1295 1296 case ACPI_EVENT_POWER_BUTTON: 1297 1298 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1299 return; 1300 1301 type = PSWITCH_TYPE_POWER; 1302 smpsw = &sc->sc_smpsw_power; 1303 break; 1304 1305 case ACPI_EVENT_SLEEP_BUTTON: 1306 1307 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1308 return; 1309 1310 type = PSWITCH_TYPE_SLEEP; 1311 smpsw = &sc->sc_smpsw_sleep; 1312 break; 1313 1314 default: 1315 rv = AE_TYPE; 1316 goto fail; 1317 } 1318 1319 smpsw->smpsw_type = type; 1320 smpsw->smpsw_name = device_xname(sc->sc_dev); 1321 1322 if (sysmon_pswitch_register(smpsw) != 0) { 1323 rv = AE_ERROR; 1324 goto fail; 1325 } 1326 1327 AcpiClearEvent(event); 1328 1329 rv = AcpiInstallFixedEventHandler(event, 1330 acpi_fixed_button_handler, smpsw); 1331 1332 if (ACPI_FAILURE(rv)) { 1333 sysmon_pswitch_unregister(smpsw); 1334 goto fail; 1335 } 1336 1337 aprint_normal_dev(sc->sc_dev, "fixed %s button present\n", 1338 (type != PSWITCH_TYPE_SLEEP) ? "power" : "sleep"); 1339 1340 return; 1341 1342 fail: 1343 aprint_error_dev(sc->sc_dev, "failed to register " 1344 "fixed event %d: %s\n", event, AcpiFormatException(rv)); 1345 } 1346 1347 static void 1348 acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1349 { 1350 struct sysmon_pswitch *smpsw; 1351 ACPI_STATUS rv; 1352 1353 switch (event) { 1354 1355 case ACPI_EVENT_POWER_BUTTON: 1356 smpsw = &sc->sc_smpsw_power; 1357 1358 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1359 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1360 return; 1361 } 1362 1363 break; 1364 1365 case ACPI_EVENT_SLEEP_BUTTON: 1366 smpsw = &sc->sc_smpsw_sleep; 1367 1368 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1369 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1370 return; 1371 } 1372 1373 break; 1374 1375 default: 1376 rv = AE_TYPE; 1377 goto fail; 1378 } 1379 1380 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1381 1382 if (ACPI_SUCCESS(rv)) { 1383 sysmon_pswitch_unregister(smpsw); 1384 return; 1385 } 1386 1387 fail: 1388 aprint_error_dev(sc->sc_dev, "failed to deregister " 1389 "fixed event: %s\n", AcpiFormatException(rv)); 1390 } 1391 1392 static uint32_t 1393 acpi_fixed_button_handler(void *context) 1394 { 1395 static const int handler = OSL_NOTIFY_HANDLER; 1396 struct sysmon_pswitch *smpsw = context; 1397 1398 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1399 1400 return ACPI_INTERRUPT_HANDLED; 1401 } 1402 1403 static void 1404 acpi_fixed_button_pressed(void *context) 1405 { 1406 struct sysmon_pswitch *smpsw = context; 1407 1408 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1409 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1410 "power" : "sleep")); 1411 1412 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1413 } 1414 1415 /* 1416 * Sleep. 1417 */ 1418 static void 1419 acpi_sleep_init(struct acpi_softc *sc) 1420 { 1421 uint8_t a, b, i; 1422 ACPI_STATUS rv; 1423 1424 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1425 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1426 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1427 1428 /* 1429 * Evaluate supported sleep states. 1430 */ 1431 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1432 1433 rv = AcpiGetSleepTypeData(i, &a, &b); 1434 1435 if (ACPI_SUCCESS(rv)) 1436 sc->sc_sleepstates |= __BIT(i); 1437 } 1438 } 1439 1440 /* 1441 * Must be called with interrupts enabled. 1442 */ 1443 void 1444 acpi_enter_sleep_state(int state) 1445 { 1446 struct acpi_softc *sc = acpi_softc; 1447 ACPI_STATUS rv; 1448 1449 if (acpi_softc == NULL) 1450 return; 1451 1452 if (state == sc->sc_sleepstate) 1453 return; 1454 1455 if (state < ACPI_STATE_S0 || state > ACPI_STATE_S5) 1456 return; 1457 1458 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1459 1460 switch (state) { 1461 1462 case ACPI_STATE_S0: 1463 sc->sc_sleepstate = ACPI_STATE_S0; 1464 return; 1465 1466 case ACPI_STATE_S1: 1467 case ACPI_STATE_S2: 1468 case ACPI_STATE_S3: 1469 case ACPI_STATE_S4: 1470 1471 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1472 aprint_error_dev(sc->sc_dev, "sleep state " 1473 "S%d is not available\n", state); 1474 return; 1475 } 1476 1477 /* 1478 * Evaluate the _TTS method. This should be done before 1479 * pmf_system_suspend(9) and the evaluation of _PTS. 1480 * We should also re-evaluate this once we return to 1481 * S0 or if we abort the sleep state transition in the 1482 * middle (see ACPI 3.0, section 7.3.6). In reality, 1483 * however, the _TTS method is seldom seen in the field. 1484 */ 1485 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1486 1487 if (ACPI_SUCCESS(rv)) 1488 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1489 1490 if (state != ACPI_STATE_S1 && 1491 pmf_system_suspend(PMF_Q_NONE) != true) { 1492 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1493 break; 1494 } 1495 1496 /* 1497 * This will evaluate the _PTS and _SST methods, 1498 * but unlike the documentation claims, not _GTS, 1499 * which is evaluated in AcpiEnterSleepState(). 1500 * This must be called with interrupts enabled. 1501 */ 1502 rv = AcpiEnterSleepStatePrep(state); 1503 1504 if (ACPI_FAILURE(rv)) { 1505 aprint_error_dev(sc->sc_dev, "failed to prepare " 1506 "S%d: %s\n", state, AcpiFormatException(rv)); 1507 break; 1508 } 1509 1510 /* 1511 * After the _PTS method has been evaluated, we can 1512 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1513 */ 1514 acpi_wakedev_commit(sc, state); 1515 1516 sc->sc_sleepstate = state; 1517 1518 if (state == ACPI_STATE_S1) { 1519 1520 /* 1521 * Before the transition to S1, CPU caches 1522 * must be flushed (see ACPI 4.0, 7.3.4.2). 1523 * 1524 * Note that interrupts must be off before 1525 * calling AcpiEnterSleepState(). Conversely, 1526 * AcpiLeaveSleepState() should always be 1527 * called with interrupts enabled. 1528 */ 1529 acpi_md_OsDisableInterrupt(); 1530 1531 ACPI_FLUSH_CPU_CACHE(); 1532 rv = AcpiEnterSleepState(state); 1533 1534 if (ACPI_FAILURE(rv)) 1535 aprint_error_dev(sc->sc_dev, "failed to " 1536 "enter S1: %s\n", AcpiFormatException(rv)); 1537 1538 /* 1539 * Clear fixed events and disable all GPEs before 1540 * interrupts are enabled. 1541 */ 1542 AcpiClearEvent(ACPI_EVENT_PMTIMER); 1543 AcpiClearEvent(ACPI_EVENT_GLOBAL); 1544 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON); 1545 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON); 1546 AcpiClearEvent(ACPI_EVENT_RTC); 1547 #if (!ACPI_REDUCED_HARDWARE) 1548 AcpiHwDisableAllGpes(); 1549 #endif 1550 1551 acpi_md_OsEnableInterrupt(); 1552 rv = AcpiLeaveSleepState(state); 1553 1554 } else { 1555 1556 (void)acpi_md_sleep(state); 1557 1558 if (state == ACPI_STATE_S4) 1559 AcpiEnable(); 1560 1561 (void)pmf_system_bus_resume(PMF_Q_NONE); 1562 (void)AcpiLeaveSleepState(state); 1563 (void)AcpiSetFirmwareWakingVector(0, 0); 1564 (void)pmf_system_resume(PMF_Q_NONE); 1565 } 1566 1567 /* 1568 * No wake GPEs should be enabled at runtime. 1569 */ 1570 acpi_wakedev_commit(sc, ACPI_STATE_S0); 1571 break; 1572 1573 case ACPI_STATE_S5: 1574 1575 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1576 1577 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1578 1579 if (ACPI_FAILURE(rv)) { 1580 aprint_error_dev(sc->sc_dev, "failed to prepare " 1581 "S%d: %s\n", state, AcpiFormatException(rv)); 1582 break; 1583 } 1584 1585 (void)AcpiDisableAllGpes(); 1586 1587 DELAY(1000000); 1588 1589 sc->sc_sleepstate = state; 1590 acpi_md_OsDisableInterrupt(); 1591 1592 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1593 1594 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1595 1596 break; 1597 } 1598 1599 sc->sc_sleepstate = ACPI_STATE_S0; 1600 1601 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1602 } 1603 1604 /* 1605 * Sysctl. 1606 */ 1607 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1608 { 1609 const struct sysctlnode *rnode, *snode; 1610 int err; 1611 1612 err = sysctl_createv(clog, 0, NULL, &rnode, 1613 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1614 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1615 NULL, 0, NULL, 0, 1616 CTL_HW, CTL_CREATE, CTL_EOL); 1617 1618 if (err != 0) 1619 return; 1620 1621 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1622 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1623 "root", SYSCTL_DESCR("ACPI root pointer"), 1624 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1625 CTL_CREATE, CTL_EOL); 1626 1627 err = sysctl_createv(clog, 0, &rnode, &snode, 1628 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1629 "sleep", SYSCTL_DESCR("ACPI sleep"), 1630 NULL, 0, NULL, 0, 1631 CTL_CREATE, CTL_EOL); 1632 1633 if (err != 0) 1634 return; 1635 1636 (void)sysctl_createv(NULL, 0, &snode, NULL, 1637 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1638 "state", SYSCTL_DESCR("System sleep state"), 1639 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1640 CTL_CREATE, CTL_EOL); 1641 1642 (void)sysctl_createv(NULL, 0, &snode, NULL, 1643 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1644 "states", SYSCTL_DESCR("Supported sleep states"), 1645 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1646 CTL_CREATE, CTL_EOL); 1647 1648 err = sysctl_createv(clog, 0, &rnode, &rnode, 1649 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1650 "stat", SYSCTL_DESCR("ACPI statistics"), 1651 NULL, 0, NULL, 0, 1652 CTL_CREATE, CTL_EOL); 1653 1654 if (err != 0) 1655 return; 1656 1657 (void)sysctl_createv(clog, 0, &rnode, NULL, 1658 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1659 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1660 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1661 CTL_CREATE, CTL_EOL); 1662 1663 (void)sysctl_createv(clog, 0, &rnode, NULL, 1664 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1665 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1666 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1667 CTL_CREATE, CTL_EOL); 1668 1669 (void)sysctl_createv(clog, 0, &rnode, NULL, 1670 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1671 "fixed", SYSCTL_DESCR("Number of fixed events"), 1672 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1673 CTL_CREATE, CTL_EOL); 1674 1675 (void)sysctl_createv(clog, 0, &rnode, NULL, 1676 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1677 "method", SYSCTL_DESCR("Number of methods executed"), 1678 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1679 CTL_CREATE, CTL_EOL); 1680 1681 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1682 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1683 } 1684 1685 static int 1686 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1687 { 1688 struct sysctlnode node; 1689 uint64_t t; 1690 int err, i; 1691 1692 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1693 t += AcpiFixedEventCount[i]; 1694 1695 node = *rnode; 1696 node.sysctl_data = &t; 1697 1698 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1699 1700 if (err || newp == NULL) 1701 return err; 1702 1703 return 0; 1704 } 1705 1706 static int 1707 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1708 { 1709 struct acpi_softc *sc = acpi_softc; 1710 struct sysctlnode node; 1711 int err, t; 1712 1713 if (acpi_softc == NULL) 1714 return ENOSYS; 1715 1716 node = *rnode; 1717 t = sc->sc_sleepstate; 1718 node.sysctl_data = &t; 1719 1720 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1721 1722 if (err || newp == NULL) 1723 return err; 1724 1725 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1726 return EINVAL; 1727 1728 acpi_enter_sleep_state(t); 1729 1730 return 0; 1731 } 1732 1733 static int 1734 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1735 { 1736 struct acpi_softc *sc = acpi_softc; 1737 struct sysctlnode node; 1738 char t[3 * 6 + 1]; 1739 int err; 1740 1741 if (acpi_softc == NULL) 1742 return ENOSYS; 1743 1744 (void)memset(t, '\0', sizeof(t)); 1745 1746 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1747 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1748 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1749 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1750 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1751 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1752 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1753 1754 node = *rnode; 1755 node.sysctl_data = &t; 1756 1757 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1758 1759 if (err || newp == NULL) 1760 return err; 1761 1762 return 0; 1763 } 1764 1765 /* 1766 * Tables. 1767 */ 1768 ACPI_PHYSICAL_ADDRESS 1769 acpi_OsGetRootPointer(void) 1770 { 1771 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1772 1773 /* 1774 * We let MD code handle this since there are multiple ways to do it: 1775 * 1776 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1777 * 1778 * IA-64: Use the EFI. 1779 */ 1780 PhysicalAddress = acpi_md_OsGetRootPointer(); 1781 1782 if (acpi_root_pointer == 0) 1783 acpi_root_pointer = PhysicalAddress; 1784 1785 return PhysicalAddress; 1786 } 1787 1788 static ACPI_TABLE_HEADER * 1789 acpi_map_rsdt(void) 1790 { 1791 ACPI_PHYSICAL_ADDRESS paddr; 1792 ACPI_TABLE_RSDP *rsdp; 1793 1794 paddr = AcpiOsGetRootPointer(); 1795 1796 if (paddr == 0) 1797 return NULL; 1798 1799 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1800 1801 if (rsdp == NULL) 1802 return NULL; 1803 1804 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1805 paddr = rsdp->XsdtPhysicalAddress; 1806 else 1807 paddr = rsdp->RsdtPhysicalAddress; 1808 1809 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1810 1811 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1812 } 1813 1814 /* 1815 * XXX: Refactor to be a generic function that unmaps tables. 1816 */ 1817 static void 1818 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1819 { 1820 1821 if (rsdt == NULL) 1822 return; 1823 1824 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1825 } 1826 1827 /* 1828 * XXX: Refactor to be a generic function that maps tables. 1829 */ 1830 ACPI_STATUS 1831 acpi_madt_map(void) 1832 { 1833 ACPI_STATUS rv; 1834 1835 if (madt_header != NULL) 1836 return AE_ALREADY_EXISTS; 1837 1838 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); 1839 1840 if (ACPI_FAILURE(rv)) 1841 return rv; 1842 1843 return AE_OK; 1844 } 1845 1846 void 1847 acpi_madt_unmap(void) 1848 { 1849 madt_header = NULL; 1850 } 1851 1852 ACPI_STATUS 1853 acpi_gtdt_map(void) 1854 { 1855 ACPI_STATUS rv; 1856 1857 if (gtdt_header != NULL) 1858 return AE_ALREADY_EXISTS; 1859 1860 rv = AcpiGetTable(ACPI_SIG_GTDT, 1, >dt_header); 1861 1862 if (ACPI_FAILURE(rv)) 1863 return rv; 1864 1865 return AE_OK; 1866 } 1867 1868 void 1869 acpi_gtdt_unmap(void) 1870 { 1871 gtdt_header = NULL; 1872 } 1873 1874 /* 1875 * XXX: Refactor to be a generic function that walks tables. 1876 */ 1877 void 1878 acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) 1879 { 1880 ACPI_SUBTABLE_HEADER *hdrp; 1881 char *madtend, *where; 1882 1883 madtend = (char *)madt_header + madt_header->Length; 1884 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); 1885 1886 while (where < madtend) { 1887 1888 hdrp = (ACPI_SUBTABLE_HEADER *)where; 1889 1890 if (hdrp->Length == 0 || ACPI_FAILURE(func(hdrp, aux))) 1891 break; 1892 1893 where += hdrp->Length; 1894 } 1895 } 1896 1897 void 1898 acpi_gtdt_walk(ACPI_STATUS (*func)(ACPI_GTDT_HEADER *, void *), void *aux) 1899 { 1900 ACPI_GTDT_HEADER *hdrp; 1901 char *gtdtend, *where; 1902 1903 gtdtend = (char *)gtdt_header + gtdt_header->Length; 1904 where = (char *)gtdt_header + sizeof (ACPI_TABLE_GTDT); 1905 1906 while (where < gtdtend) { 1907 1908 hdrp = (ACPI_GTDT_HEADER *)where; 1909 1910 if (hdrp->Length == 0 || ACPI_FAILURE(func(hdrp, aux))) 1911 break; 1912 1913 where += hdrp->Length; 1914 } 1915 } 1916 1917 /* 1918 * Miscellaneous. 1919 */ 1920 static bool 1921 acpi_is_scope(struct acpi_devnode *ad) 1922 { 1923 int i; 1924 1925 /* 1926 * Return true if the node is a root scope. 1927 */ 1928 if (ad->ad_parent == NULL) 1929 return false; 1930 1931 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1932 return false; 1933 1934 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1935 1936 if (acpi_scopes[i] == NULL) 1937 continue; 1938 1939 if (ad->ad_handle == acpi_scopes[i]) 1940 return true; 1941 } 1942 1943 return false; 1944 } 1945 1946 bool 1947 acpi_device_present(ACPI_HANDLE handle) 1948 { 1949 ACPI_STATUS rv; 1950 ACPI_INTEGER sta; 1951 1952 rv = acpi_eval_integer(handle, "_STA", &sta); 1953 1954 if (ACPI_FAILURE(rv)) { 1955 /* No _STA method -> must be there */ 1956 return rv == AE_NOT_FOUND; 1957 } 1958 1959 return (sta & ACPI_STA_OK) == ACPI_STA_OK; 1960 } 1961 1962 /* 1963 * ACPIVERBOSE. 1964 */ 1965 void 1966 acpi_load_verbose(void) 1967 { 1968 1969 if (acpi_verbose_loaded == 0) 1970 module_autoload("acpiverbose", MODULE_CLASS_MISC); 1971 } 1972 1973 void 1974 acpi_print_verbose_stub(struct acpi_softc *sc) 1975 { 1976 1977 acpi_load_verbose(); 1978 1979 if (acpi_verbose_loaded != 0) 1980 acpi_print_verbose(sc); 1981 } 1982 1983 void 1984 acpi_print_dev_stub(const char *pnpstr) 1985 { 1986 1987 acpi_load_verbose(); 1988 1989 if (acpi_verbose_loaded != 0) 1990 acpi_print_dev(pnpstr); 1991 } 1992 1993 MALLOC_DECLARE(M_ACPI); /* XXX: ACPI_ACTIVATE_DEV should use kmem(9). */ 1994 1995 /* 1996 * ACPI_ACTIVATE_DEV. 1997 */ 1998 static void 1999 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 2000 { 2001 2002 #ifndef ACPI_ACTIVATE_DEV 2003 return; 2004 } 2005 #else 2006 static const int valid = ACPI_VALID_HID; 2007 ACPI_DEVICE_INFO *newdi; 2008 ACPI_STATUS rv; 2009 2010 2011 /* 2012 * If the device is valid and present, 2013 * but not enabled, try to activate it. 2014 */ 2015 if (((*di)->Valid & valid) != valid) 2016 return; 2017 2018 if (!acpi_device_present(handle)) 2019 return; 2020 2021 rv = acpi_allocate_resources(handle); 2022 2023 if (ACPI_FAILURE(rv)) 2024 goto fail; 2025 2026 rv = AcpiGetObjectInfo(handle, &newdi); 2027 2028 if (ACPI_FAILURE(rv)) 2029 goto fail; 2030 2031 ACPI_FREE(*di); 2032 *di = newdi; 2033 2034 aprint_verbose_dev(acpi_softc->sc_dev, 2035 "%s activated\n", (*di)->HardwareId.String); 2036 2037 return; 2038 2039 fail: 2040 aprint_error_dev(acpi_softc->sc_dev, "failed to " 2041 "activate %s\n", (*di)->HardwareId.String); 2042 } 2043 2044 /* 2045 * XXX: This very incomplete. 2046 */ 2047 ACPI_STATUS 2048 acpi_allocate_resources(ACPI_HANDLE handle) 2049 { 2050 ACPI_BUFFER bufp, bufc, bufn; 2051 ACPI_RESOURCE *resp, *resc, *resn; 2052 ACPI_RESOURCE_IRQ *irq; 2053 #if 0 2054 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 2055 #endif 2056 ACPI_STATUS rv; 2057 uint delta; 2058 2059 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 2060 if (ACPI_FAILURE(rv)) 2061 goto out; 2062 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 2063 if (ACPI_FAILURE(rv)) { 2064 goto out1; 2065 } 2066 2067 bufn.Length = 1000; 2068 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 2069 resp = bufp.Pointer; 2070 resc = bufc.Pointer; 2071 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 2072 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 2073 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 2074 resp = ACPI_NEXT_RESOURCE(resp); 2075 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 2076 break; 2077 /* Found identical Id */ 2078 resn->Type = resc->Type; 2079 switch (resc->Type) { 2080 case ACPI_RESOURCE_TYPE_IRQ: 2081 memcpy(&resn->Data, &resp->Data, 2082 sizeof(ACPI_RESOURCE_IRQ)); 2083 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 2084 irq->Interrupts[0] = 2085 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 2086 Interrupts[irq->InterruptCount-1]; 2087 irq->InterruptCount = 1; 2088 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 2089 break; 2090 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 2091 memcpy(&resn->Data, &resp->Data, 2092 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 2093 #if 0 2094 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 2095 /* 2096 * XXX: Not duplicating the interrupt logic above 2097 * because its not clear what it accomplishes. 2098 */ 2099 xirq->Interrupts[0] = 2100 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 2101 Interrupts[irq->NumberOfInterrupts-1]; 2102 xirq->NumberOfInterrupts = 1; 2103 #endif 2104 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 2105 break; 2106 case ACPI_RESOURCE_TYPE_IO: 2107 memcpy(&resn->Data, &resp->Data, 2108 sizeof(ACPI_RESOURCE_IO)); 2109 resn->Length = resp->Length; 2110 break; 2111 default: 2112 aprint_error_dev(acpi_softc->sc_dev, 2113 "%s: invalid type %u\n", __func__, resc->Type); 2114 rv = AE_BAD_DATA; 2115 goto out2; 2116 } 2117 resc = ACPI_NEXT_RESOURCE(resc); 2118 resn = ACPI_NEXT_RESOURCE(resn); 2119 resp = ACPI_NEXT_RESOURCE(resp); 2120 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 2121 if (delta >= 2122 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 2123 bufn.Length *= 2; 2124 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 2125 M_ACPI, M_WAITOK); 2126 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 2127 delta); 2128 } 2129 } 2130 2131 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 2132 aprint_error_dev(acpi_softc->sc_dev, 2133 "%s: resc not exhausted\n", __func__); 2134 rv = AE_BAD_DATA; 2135 goto out3; 2136 } 2137 2138 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 2139 rv = AcpiSetCurrentResources(handle, &bufn); 2140 2141 if (ACPI_FAILURE(rv)) 2142 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 2143 "resources: %s\n", __func__, AcpiFormatException(rv)); 2144 2145 out3: 2146 free(bufn.Pointer, M_ACPI); 2147 out2: 2148 ACPI_FREE(bufc.Pointer); 2149 out1: 2150 ACPI_FREE(bufp.Pointer); 2151 out: 2152 return rv; 2153 } 2154 2155 #endif /* ACPI_ACTIVATE_DEV */ 2156
Indexes created Wed Oct 01 19:09:53 GMT 2025