acpi.c revision 1.259.2.3
1 /* $NetBSD: acpi.c,v 1.259.2.3 2016/07/09 20:25:01 skrll 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 1.259.2.3 2016/07/09 20:25:01 skrll Exp $"); 104 105 #include "opt_acpi.h" 106 #include "opt_pcifixup.h" 107 108 #include <sys/param.h> 109 #include <sys/device.h> 110 #include <sys/kernel.h> 111 #include <sys/kmem.h> 112 #include <sys/malloc.h> 113 #include <sys/module.h> 114 #include <sys/mutex.h> 115 #include <sys/sysctl.h> 116 #include <sys/systm.h> 117 #include <sys/timetc.h> 118 119 #include <dev/acpi/acpireg.h> 120 #include <dev/acpi/acpivar.h> 121 #include <dev/acpi/acpi_mcfg.h> 122 #include <dev/acpi/acpi_osd.h> 123 #include <dev/acpi/acpi_pci.h> 124 #include <dev/acpi/acpi_power.h> 125 #include <dev/acpi/acpi_timer.h> 126 #include <dev/acpi/acpi_wakedev.h> 127 128 #include <machine/acpi_machdep.h> 129 130 #define _COMPONENT ACPI_BUS_COMPONENT 131 ACPI_MODULE_NAME ("acpi") 132 133 /* 134 * The acpi_active variable is set when the ACPI subsystem is active. 135 * Machine-dependent code may wish to skip other steps (such as attaching 136 * subsystems that ACPI supercedes) when ACPI is active. 137 */ 138 int acpi_active = 0; 139 int acpi_suspended = 0; 140 int acpi_force_load = 0; 141 int acpi_verbose_loaded = 0; 142 143 struct acpi_softc *acpi_softc = NULL; 144 static uint64_t acpi_root_pointer; 145 extern kmutex_t acpi_interrupt_list_mtx; 146 extern struct cfdriver acpi_cd; 147 static ACPI_HANDLE acpi_scopes[4]; 148 ACPI_TABLE_HEADER *madt_header; 149 150 /* 151 * This structure provides a context for the ACPI 152 * namespace walk performed in acpi_build_tree(). 153 */ 154 struct acpi_walkcontext { 155 struct acpi_softc *aw_sc; 156 struct acpi_devnode *aw_parent; 157 }; 158 159 /* 160 * Ignored HIDs. 161 */ 162 static const char * const acpi_ignored_ids[] = { 163 #if defined(i386) || defined(x86_64) 164 "ACPI0007", /* ACPI CPUs do not attach to acpi(4) */ 165 "PNP0000", /* AT interrupt controller is handled internally */ 166 "PNP0200", /* AT DMA controller is handled internally */ 167 "PNP0A??", /* PCI Busses are handled internally */ 168 "PNP0B00", /* AT RTC is handled internally */ 169 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 170 #endif 171 #if defined(x86_64) 172 "PNP0C04", /* FPU is handled internally */ 173 #endif 174 NULL 175 }; 176 177 /* 178 * Devices that should be attached early. 179 */ 180 static const char * const acpi_early_ids[] = { 181 "PNP0C09", /* acpiec(4) */ 182 NULL 183 }; 184 185 static int acpi_match(device_t, cfdata_t, void *); 186 static int acpi_submatch(device_t, cfdata_t, const int *, void *); 187 static void acpi_attach(device_t, device_t, void *); 188 static int acpi_detach(device_t, int); 189 static void acpi_childdet(device_t, device_t); 190 static bool acpi_suspend(device_t, const pmf_qual_t *); 191 static bool acpi_resume(device_t, const pmf_qual_t *); 192 193 static void acpi_build_tree(struct acpi_softc *); 194 static void acpi_config_tree(struct acpi_softc *); 195 static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, 196 void *, void **); 197 static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t, 198 void *, void **); 199 static void acpi_make_name(struct acpi_devnode *, uint32_t); 200 201 static int acpi_rescan(device_t, const char *, const int *); 202 static void acpi_rescan_early(struct acpi_softc *); 203 static void acpi_rescan_nodes(struct acpi_softc *); 204 static void acpi_rescan_capabilities(device_t); 205 static int acpi_print(void *aux, const char *); 206 207 static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); 208 209 static void acpi_register_fixed_button(struct acpi_softc *, int); 210 static void acpi_deregister_fixed_button(struct acpi_softc *, int); 211 static uint32_t acpi_fixed_button_handler(void *); 212 static void acpi_fixed_button_pressed(void *); 213 214 static void acpi_sleep_init(struct acpi_softc *); 215 216 static int sysctl_hw_acpi_fixedstats(SYSCTLFN_PROTO); 217 static int sysctl_hw_acpi_sleepstate(SYSCTLFN_PROTO); 218 static int sysctl_hw_acpi_sleepstates(SYSCTLFN_PROTO); 219 220 static bool acpi_is_scope(struct acpi_devnode *); 221 static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 222 static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 223 224 void acpi_print_verbose_stub(struct acpi_softc *); 225 void acpi_print_dev_stub(const char *); 226 227 static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **); 228 ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE); 229 230 void (*acpi_print_verbose)(struct acpi_softc *) = acpi_print_verbose_stub; 231 void (*acpi_print_dev)(const char *) = acpi_print_dev_stub; 232 233 CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 234 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 235 236 /* 237 * Probe for ACPI support. 238 * 239 * This is called by the machine-dependent ACPI front-end. 240 * Note: this is not an autoconfiguration interface function. 241 */ 242 int 243 acpi_probe(void) 244 { 245 ACPI_TABLE_HEADER *rsdt; 246 ACPI_STATUS rv; 247 int quirks; 248 249 if (acpi_softc != NULL) 250 panic("%s: already probed", __func__); 251 252 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 253 254 /* 255 * Start up ACPICA. 256 */ 257 AcpiGbl_EnableInterpreterSlack = true; 258 259 rv = AcpiInitializeSubsystem(); 260 261 if (ACPI_FAILURE(rv)) { 262 aprint_error("%s: failed to initialize subsystem\n", __func__); 263 return 0; 264 } 265 266 /* 267 * Allocate space for RSDT/XSDT and DSDT, 268 * but allow resizing if more tables exist. 269 */ 270 rv = AcpiInitializeTables(NULL, 2, true); 271 272 if (ACPI_FAILURE(rv)) { 273 aprint_error("%s: failed to initialize tables\n", __func__); 274 goto fail; 275 } 276 277 rv = AcpiLoadTables(); 278 279 if (ACPI_FAILURE(rv)) { 280 aprint_error("%s: failed to load tables\n", __func__); 281 goto fail; 282 } 283 284 rsdt = acpi_map_rsdt(); 285 286 if (rsdt == NULL) { 287 aprint_error("%s: failed to map RSDT\n", __func__); 288 goto fail; 289 } 290 291 quirks = acpi_find_quirks(); 292 293 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_BROKEN) != 0) { 294 295 aprint_normal("ACPI: BIOS is listed as broken:\n"); 296 aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 297 "AslId <%4.4s,%08x>\n", rsdt->OemId, rsdt->OemTableId, 298 rsdt->OemRevision, rsdt->AslCompilerId, 299 rsdt->AslCompilerRevision); 300 aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n"); 301 302 acpi_unmap_rsdt(rsdt); 303 goto fail; 304 } 305 306 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_OLDBIOS) != 0) { 307 308 aprint_normal("ACPI: BIOS is too old (%s). " 309 "Set acpi_force_load to use.\n", 310 pmf_get_platform("bios-date")); 311 312 acpi_unmap_rsdt(rsdt); 313 goto fail; 314 } 315 316 acpi_unmap_rsdt(rsdt); 317 318 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 319 320 if (ACPI_FAILURE(rv)) { 321 aprint_error("%s: failed to enable subsystem\n", __func__); 322 goto fail; 323 } 324 325 return 1; 326 327 fail: 328 (void)AcpiTerminate(); 329 330 return 0; 331 } 332 333 void 334 acpi_disable(void) 335 { 336 337 if (acpi_softc == NULL) 338 return; 339 340 KASSERT(acpi_active != 0); 341 342 if (AcpiGbl_FADT.SmiCommand != 0) 343 AcpiDisable(); 344 } 345 346 int 347 acpi_check(device_t parent, const char *ifattr) 348 { 349 return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); 350 } 351 352 int 353 acpi_reset(void) 354 { 355 struct acpi_softc *sc = acpi_softc; 356 ACPI_GENERIC_ADDRESS *ResetReg; 357 ACPI_PCI_ID PciId; 358 ACPI_STATUS status; 359 360 if (sc == NULL) 361 return ENXIO; 362 363 ResetReg = &AcpiGbl_FADT.ResetRegister; 364 365 /* Check if the reset register is supported */ 366 if (!(AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) || 367 !ResetReg->Address) { 368 return ENOENT; 369 } 370 371 switch (ResetReg->SpaceId) { 372 case ACPI_ADR_SPACE_PCI_CONFIG: 373 PciId.Segment = PciId.Bus = 0; 374 PciId.Device = ACPI_GAS_PCI_DEV(ResetReg->Address); 375 PciId.Function = ACPI_GAS_PCI_FUNC(ResetReg->Address); 376 status = AcpiOsWritePciConfiguration(&PciId, 377 ACPI_GAS_PCI_REGOFF(ResetReg->Address), 378 AcpiGbl_FADT.ResetValue, ResetReg->BitWidth); 379 break; 380 case ACPI_ADR_SPACE_SYSTEM_IO: 381 case ACPI_ADR_SPACE_SYSTEM_MEMORY: 382 status = AcpiReset(); 383 break; 384 default: 385 status = AE_TYPE; 386 break; 387 } 388 389 return ACPI_FAILURE(status) ? EIO : 0; 390 } 391 392 /* 393 * Autoconfiguration. 394 */ 395 static int 396 acpi_match(device_t parent, cfdata_t match, void *aux) 397 { 398 /* 399 * XXX: Nada; MD code has called acpi_probe(). 400 */ 401 return 1; 402 } 403 404 static int 405 acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 406 { 407 struct cfattach *ca; 408 409 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 410 411 return (ca == &acpi_ca); 412 } 413 414 static void 415 acpi_attach(device_t parent, device_t self, void *aux) 416 { 417 struct acpi_softc *sc = device_private(self); 418 struct acpibus_attach_args *aa = aux; 419 ACPI_TABLE_HEADER *rsdt; 420 ACPI_STATUS rv; 421 422 aprint_naive("\n"); 423 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 424 425 if (acpi_softc != NULL) 426 panic("%s: already attached", __func__); 427 428 rsdt = acpi_map_rsdt(); 429 430 if (rsdt == NULL) 431 aprint_error_dev(self, "X/RSDT: Not found\n"); 432 else { 433 aprint_verbose_dev(self, 434 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 435 rsdt->OemId, rsdt->OemTableId, 436 rsdt->OemRevision, 437 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 438 } 439 440 acpi_unmap_rsdt(rsdt); 441 442 sc->sc_dev = self; 443 sc->sc_root = NULL; 444 445 sc->sc_sleepstate = ACPI_STATE_S0; 446 sc->sc_quirks = acpi_find_quirks(); 447 448 sysmon_power_settype("acpi"); 449 450 sc->sc_iot = aa->aa_iot; 451 sc->sc_memt = aa->aa_memt; 452 sc->sc_pc = aa->aa_pc; 453 sc->sc_pciflags = aa->aa_pciflags; 454 sc->sc_ic = aa->aa_ic; 455 sc->sc_dmat = aa->aa_dmat; 456 sc->sc_dmat64 = aa->aa_dmat64; 457 458 SIMPLEQ_INIT(&sc->ad_head); 459 460 acpi_softc = sc; 461 462 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) 463 aprint_error_dev(self, "couldn't establish power handler\n"); 464 465 /* 466 * Bring ACPICA on-line. 467 */ 468 469 rv = AcpiEnableSubsystem(ACPI_FULL_INITIALIZATION); 470 471 if (ACPI_FAILURE(rv)) 472 goto fail; 473 474 /* 475 * Early initialization of acpiec(4) via ECDT. 476 */ 477 (void)config_found_ia(self, "acpiecdtbus", aa, NULL); 478 479 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 480 481 if (ACPI_FAILURE(rv)) 482 goto fail; 483 484 /* 485 * Scan the namespace and build our device tree. 486 */ 487 acpi_build_tree(sc); 488 489 /* 490 * Probe MCFG table 491 */ 492 acpimcfg_probe(sc); 493 494 acpi_md_callback(sc); 495 496 /* 497 * Early initialization of the _PDC control method 498 * that may load additional SSDT tables dynamically. 499 */ 500 (void)acpi_md_pdc(); 501 502 /* 503 * Install global notify handlers. 504 */ 505 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 506 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 507 508 if (ACPI_FAILURE(rv)) 509 goto fail; 510 511 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 512 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 513 514 if (ACPI_FAILURE(rv)) 515 goto fail; 516 517 acpi_active = 1; 518 519 /* Show SCI interrupt. */ 520 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 521 AcpiGbl_FADT.SciInterrupt); 522 523 /* 524 * Install fixed-event handlers. 525 */ 526 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 527 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 528 529 acpitimer_init(sc); 530 acpi_config_tree(sc); 531 acpi_sleep_init(sc); 532 533 #ifdef ACPI_DEBUG 534 acpi_debug_init(); 535 #endif 536 537 /* 538 * Print debug information. 539 */ 540 acpi_print_verbose(sc); 541 542 return; 543 544 fail: 545 aprint_error("%s: failed to initialize ACPI: %s\n", 546 __func__, AcpiFormatException(rv)); 547 } 548 549 /* 550 * XXX: This is incomplete. 551 */ 552 static int 553 acpi_detach(device_t self, int flags) 554 { 555 struct acpi_softc *sc = device_private(self); 556 ACPI_STATUS rv; 557 int rc; 558 559 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 560 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 561 562 if (ACPI_FAILURE(rv)) 563 return EBUSY; 564 565 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 566 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 567 568 if (ACPI_FAILURE(rv)) 569 return EBUSY; 570 571 if ((rc = config_detach_children(self, flags)) != 0) 572 return rc; 573 574 if ((rc = acpitimer_detach()) != 0) 575 return rc; 576 577 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 578 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 579 580 pmf_device_deregister(self); 581 582 acpi_softc = NULL; 583 584 return 0; 585 } 586 587 static void 588 acpi_childdet(device_t self, device_t child) 589 { 590 struct acpi_softc *sc = device_private(self); 591 struct acpi_devnode *ad; 592 593 if (sc->sc_apmbus == child) 594 sc->sc_apmbus = NULL; 595 596 if (sc->sc_hpet == child) 597 sc->sc_hpet = NULL; 598 599 if (sc->sc_wdrt == child) 600 sc->sc_wdrt = NULL; 601 602 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 603 604 if (ad->ad_device == child) 605 ad->ad_device = NULL; 606 } 607 } 608 609 static bool 610 acpi_suspend(device_t dv, const pmf_qual_t *qual) 611 { 612 613 acpi_suspended = 1; 614 615 return true; 616 } 617 618 static bool 619 acpi_resume(device_t dv, const pmf_qual_t *qual) 620 { 621 622 acpi_suspended = 0; 623 624 return true; 625 } 626 627 /* 628 * Namespace scan. 629 */ 630 static void 631 acpi_build_tree(struct acpi_softc *sc) 632 { 633 struct acpi_walkcontext awc; 634 635 /* 636 * Get the root scope handles. 637 */ 638 KASSERT(__arraycount(acpi_scopes) == 4); 639 640 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 641 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 642 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 643 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 644 645 /* 646 * Make the root node. 647 */ 648 awc.aw_sc = sc; 649 awc.aw_parent = NULL; 650 651 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 652 653 KASSERT(sc->sc_root == NULL); 654 KASSERT(awc.aw_parent != NULL); 655 656 sc->sc_root = awc.aw_parent; 657 658 /* 659 * Build the internal namespace. 660 */ 661 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 662 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 663 664 /* 665 * Scan the internal namespace. 666 */ 667 (void)acpi_pcidev_scan(sc->sc_root); 668 } 669 670 static void 671 acpi_config_tree(struct acpi_softc *sc) 672 { 673 674 /* 675 * Configure all everything found "at acpi?". 676 */ 677 (void)acpi_rescan(sc->sc_dev, NULL, NULL); 678 679 /* 680 * Update GPE information. 681 * 682 * Note that this must be called after 683 * all GPE handlers have been installed. 684 */ 685 (void)AcpiUpdateAllGpes(); 686 687 /* 688 * Defer rest of the configuration. 689 */ 690 (void)config_defer(sc->sc_dev, acpi_rescan_capabilities); 691 } 692 693 static ACPI_STATUS 694 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 695 void *context, void **status) 696 { 697 struct acpi_walkcontext *awc = context; 698 struct acpi_softc *sc = awc->aw_sc; 699 struct acpi_devnode *ad; 700 ACPI_DEVICE_INFO *devinfo; 701 ACPI_OBJECT_TYPE type; 702 ACPI_STATUS rv; 703 704 rv = AcpiGetObjectInfo(handle, &devinfo); 705 706 if (ACPI_FAILURE(rv)) 707 return AE_OK; /* Do not terminate the walk. */ 708 709 type = devinfo->Type; 710 711 switch (type) { 712 713 case ACPI_TYPE_DEVICE: 714 acpi_activate_device(handle, &devinfo); 715 case ACPI_TYPE_PROCESSOR: 716 case ACPI_TYPE_THERMAL: 717 case ACPI_TYPE_POWER: 718 719 ad = kmem_zalloc(sizeof(*ad), KM_SLEEP); 720 721 if (ad == NULL) 722 return AE_NO_MEMORY; 723 724 ad->ad_device = NULL; 725 ad->ad_notify = NULL; 726 ad->ad_pciinfo = NULL; 727 ad->ad_wakedev = NULL; 728 729 ad->ad_type = type; 730 ad->ad_handle = handle; 731 ad->ad_devinfo = devinfo; 732 733 ad->ad_root = sc->sc_dev; 734 ad->ad_parent = awc->aw_parent; 735 736 acpi_match_node_init(ad); 737 acpi_make_name(ad, devinfo->Name); 738 739 /* 740 * Identify wake GPEs from the _PRW. Note that 741 * AcpiUpdateAllGpes() must be called afterwards. 742 */ 743 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) 744 acpi_wakedev_init(ad); 745 746 SIMPLEQ_INIT(&ad->ad_child_head); 747 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 748 749 if (ad->ad_parent != NULL) { 750 751 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 752 ad, ad_child_list); 753 } 754 755 awc->aw_parent = ad; 756 } 757 758 return AE_OK; 759 } 760 761 static ACPI_STATUS 762 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 763 void *context, void **status) 764 { 765 struct acpi_walkcontext *awc = context; 766 767 KASSERT(awc != NULL); 768 KASSERT(awc->aw_parent != NULL); 769 770 if (handle == awc->aw_parent->ad_handle) 771 awc->aw_parent = awc->aw_parent->ad_parent; 772 773 return AE_OK; 774 } 775 776 static void 777 acpi_make_name(struct acpi_devnode *ad, uint32_t name) 778 { 779 ACPI_NAME_UNION *anu; 780 int clear, i; 781 782 anu = (ACPI_NAME_UNION *)&name; 783 ad->ad_name[4] = '\0'; 784 785 for (i = 3, clear = 0; i >= 0; i--) { 786 787 if (clear == 0 && anu->Ascii[i] == '_') 788 ad->ad_name[i] = '\0'; 789 else { 790 ad->ad_name[i] = anu->Ascii[i]; 791 clear = 1; 792 } 793 } 794 795 if (ad->ad_name[0] == '\0') 796 ad->ad_name[0] = '_'; 797 } 798 799 /* 800 * Device attachment. 801 */ 802 static int 803 acpi_rescan(device_t self, const char *ifattr, const int *locators) 804 { 805 struct acpi_softc *sc = device_private(self); 806 struct acpi_attach_args aa; 807 808 /* 809 * Try to attach hpet(4) first via a specific table. 810 */ 811 aa.aa_memt = sc->sc_memt; 812 813 if (ifattr_match(ifattr, "acpihpetbus") && sc->sc_hpet == NULL) 814 sc->sc_hpet = config_found_ia(sc->sc_dev, 815 "acpihpetbus", &aa, NULL); 816 817 /* 818 * A two-pass scan for acpinodebus. 819 */ 820 if (ifattr_match(ifattr, "acpinodebus")) { 821 acpi_rescan_early(sc); 822 acpi_rescan_nodes(sc); 823 } 824 825 /* 826 * Attach APM emulation and acpiwdrt(4). 827 */ 828 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 829 sc->sc_apmbus = config_found_ia(sc->sc_dev, 830 "acpiapmbus", NULL, NULL); 831 832 if (ifattr_match(ifattr, "acpiwdrtbus") && sc->sc_wdrt == NULL) 833 sc->sc_wdrt = config_found_ia(sc->sc_dev, 834 "acpiwdrtbus", NULL, NULL); 835 836 return 0; 837 } 838 839 static void 840 acpi_rescan_early(struct acpi_softc *sc) 841 { 842 struct acpi_attach_args aa; 843 struct acpi_devnode *ad; 844 845 /* 846 * First scan for devices such as acpiec(4) that 847 * should be always attached before anything else. 848 * We want these devices to attach regardless of 849 * the device status and other restrictions. 850 */ 851 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 852 853 if (ad->ad_device != NULL) 854 continue; 855 856 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 857 continue; 858 859 if (acpi_match_hid(ad->ad_devinfo, acpi_early_ids) == 0) 860 continue; 861 862 aa.aa_node = ad; 863 aa.aa_iot = sc->sc_iot; 864 aa.aa_memt = sc->sc_memt; 865 aa.aa_pc = sc->sc_pc; 866 aa.aa_pciflags = sc->sc_pciflags; 867 aa.aa_ic = sc->sc_ic; 868 aa.aa_dmat = sc->sc_dmat; 869 aa.aa_dmat64 = sc->sc_dmat64; 870 871 ad->ad_device = config_found_ia(sc->sc_dev, 872 "acpinodebus", &aa, acpi_print); 873 } 874 } 875 876 static void 877 acpi_rescan_nodes(struct acpi_softc *sc) 878 { 879 const char * const hpet_ids[] = { "PNP0103", NULL }; 880 struct acpi_attach_args aa; 881 struct acpi_devnode *ad; 882 ACPI_DEVICE_INFO *di; 883 884 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 885 886 if (ad->ad_device != NULL) 887 continue; 888 889 /* 890 * There is a bug in ACPICA: it defines the type 891 * of the scopes incorrectly for its own reasons. 892 */ 893 if (acpi_is_scope(ad) != false) 894 continue; 895 896 di = ad->ad_devinfo; 897 898 /* 899 * We only attach devices which are present, enabled, and 900 * functioning properly. However, if a device is enabled, 901 * it is decoding resources and we should claim these, 902 * if possible. This requires changes to bus_space(9). 903 * Note: there is a possible race condition, because _STA 904 * may have changed since di->CurrentStatus was set. 905 */ 906 if (di->Type == ACPI_TYPE_DEVICE) { 907 908 if ((di->Valid & ACPI_VALID_STA) != 0 && 909 (di->CurrentStatus & ACPI_STA_OK) != ACPI_STA_OK) 910 continue; 911 } 912 913 if (di->Type == ACPI_TYPE_POWER) 914 continue; 915 916 if (di->Type == ACPI_TYPE_PROCESSOR) 917 continue; 918 919 if (acpi_match_hid(di, acpi_early_ids) != 0) 920 continue; 921 922 if (acpi_match_hid(di, acpi_ignored_ids) != 0) 923 continue; 924 925 if (acpi_match_hid(di, hpet_ids) != 0 && sc->sc_hpet != NULL) 926 continue; 927 928 aa.aa_node = ad; 929 aa.aa_iot = sc->sc_iot; 930 aa.aa_memt = sc->sc_memt; 931 aa.aa_pc = sc->sc_pc; 932 aa.aa_pciflags = sc->sc_pciflags; 933 aa.aa_ic = sc->sc_ic; 934 aa.aa_dmat = sc->sc_dmat; 935 aa.aa_dmat64 = sc->sc_dmat64; 936 937 ad->ad_device = config_found_ia(sc->sc_dev, 938 "acpinodebus", &aa, acpi_print); 939 } 940 } 941 942 static void 943 acpi_rescan_capabilities(device_t self) 944 { 945 struct acpi_softc *sc = device_private(self); 946 struct acpi_devnode *ad; 947 ACPI_HANDLE tmp; 948 ACPI_STATUS rv; 949 950 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 951 952 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 953 continue; 954 955 /* 956 * Scan power resource capabilities. 957 * 958 * If any power states are supported, 959 * at least _PR0 and _PR3 must be present. 960 */ 961 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 962 963 if (ACPI_SUCCESS(rv)) { 964 ad->ad_flags |= ACPI_DEVICE_POWER; 965 acpi_power_add(ad); 966 } 967 968 /* 969 * Scan wake-up capabilities. 970 */ 971 if (ad->ad_wakedev != NULL) { 972 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 973 acpi_wakedev_add(ad); 974 } 975 976 /* 977 * Scan docking stations. 978 */ 979 rv = AcpiGetHandle(ad->ad_handle, "_DCK", &tmp); 980 981 if (ACPI_SUCCESS(rv)) 982 ad->ad_flags |= ACPI_DEVICE_DOCK; 983 984 /* 985 * Scan devices that are ejectable. 986 */ 987 rv = AcpiGetHandle(ad->ad_handle, "_EJ0", &tmp); 988 989 if (ACPI_SUCCESS(rv)) 990 ad->ad_flags |= ACPI_DEVICE_EJECT; 991 } 992 } 993 994 static int 995 acpi_print(void *aux, const char *pnp) 996 { 997 struct acpi_attach_args *aa = aux; 998 struct acpi_devnode *ad; 999 const char *hid, *uid; 1000 ACPI_DEVICE_INFO *di; 1001 1002 ad = aa->aa_node; 1003 di = ad->ad_devinfo; 1004 1005 hid = di->HardwareId.String; 1006 uid = di->UniqueId.String; 1007 1008 if (pnp != NULL) { 1009 1010 if (di->Type != ACPI_TYPE_DEVICE) { 1011 1012 aprint_normal("%s (ACPI Object Type '%s') at %s", 1013 ad->ad_name, AcpiUtGetTypeName(ad->ad_type), pnp); 1014 1015 return UNCONF; 1016 } 1017 1018 if ((di->Valid & ACPI_VALID_HID) == 0 || hid == NULL) 1019 return 0; 1020 1021 aprint_normal("%s (%s) ", ad->ad_name, hid); 1022 acpi_print_dev(hid); 1023 aprint_normal("at %s", pnp); 1024 1025 return UNCONF; 1026 } 1027 1028 aprint_normal(" (%s", ad->ad_name); 1029 1030 if ((di->Valid & ACPI_VALID_HID) != 0 && hid != NULL) { 1031 1032 aprint_normal(", %s", hid); 1033 1034 if ((di->Valid & ACPI_VALID_UID) != 0 && uid != NULL) { 1035 1036 if (uid[0] == '\0') 1037 uid = "<null>"; 1038 1039 aprint_normal("-%s", uid); 1040 } 1041 } 1042 1043 aprint_normal(")"); 1044 1045 return UNCONF; 1046 } 1047 1048 /* 1049 * Notify. 1050 */ 1051 static void 1052 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1053 { 1054 struct acpi_softc *sc = acpi_softc; 1055 struct acpi_devnode *ad; 1056 1057 KASSERT(sc != NULL); 1058 KASSERT(aux == NULL); 1059 KASSERT(acpi_active != 0); 1060 1061 if (acpi_suspended != 0) 1062 return; 1063 1064 /* 1065 * System: 0x00 - 0x7F. 1066 * Device: 0x80 - 0xFF. 1067 */ 1068 switch (event) { 1069 1070 case ACPI_NOTIFY_BUS_CHECK: 1071 case ACPI_NOTIFY_DEVICE_CHECK: 1072 case ACPI_NOTIFY_DEVICE_WAKE: 1073 case ACPI_NOTIFY_EJECT_REQUEST: 1074 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1075 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1076 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1077 case ACPI_NOTIFY_POWER_FAULT: 1078 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1079 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1080 case ACPI_NOTIFY_RESERVED: 1081 case ACPI_NOTIFY_LOCALITY_UPDATE: 1082 break; 1083 } 1084 1085 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1086 "%s (%p)\n", event, acpi_name(handle), handle)); 1087 1088 /* 1089 * We deliver notifications only to drivers 1090 * that have been successfully attached and 1091 * that have registered a handler with us. 1092 * The opaque pointer is always the device_t. 1093 */ 1094 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1095 1096 if (ad->ad_device == NULL) 1097 continue; 1098 1099 if (ad->ad_notify == NULL) 1100 continue; 1101 1102 if (ad->ad_handle != handle) 1103 continue; 1104 1105 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1106 1107 return; 1108 } 1109 1110 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1111 "for %s (%p)\n", event, acpi_name(handle), handle); 1112 } 1113 1114 bool 1115 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1116 { 1117 struct acpi_softc *sc = acpi_softc; 1118 1119 KASSERT(sc != NULL); 1120 KASSERT(acpi_active != 0); 1121 1122 if (acpi_suspended != 0) 1123 goto fail; 1124 1125 if (ad == NULL || notify == NULL) 1126 goto fail; 1127 1128 ad->ad_notify = notify; 1129 1130 return true; 1131 1132 fail: 1133 aprint_error_dev(sc->sc_dev, "failed to register notify " 1134 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1135 1136 return false; 1137 } 1138 1139 void 1140 acpi_deregister_notify(struct acpi_devnode *ad) 1141 { 1142 1143 ad->ad_notify = NULL; 1144 } 1145 1146 /* 1147 * Fixed buttons. 1148 */ 1149 static void 1150 acpi_register_fixed_button(struct acpi_softc *sc, int event) 1151 { 1152 struct sysmon_pswitch *smpsw; 1153 ACPI_STATUS rv; 1154 int type; 1155 1156 switch (event) { 1157 1158 case ACPI_EVENT_POWER_BUTTON: 1159 1160 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1161 return; 1162 1163 type = PSWITCH_TYPE_POWER; 1164 smpsw = &sc->sc_smpsw_power; 1165 break; 1166 1167 case ACPI_EVENT_SLEEP_BUTTON: 1168 1169 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1170 return; 1171 1172 type = PSWITCH_TYPE_SLEEP; 1173 smpsw = &sc->sc_smpsw_sleep; 1174 break; 1175 1176 default: 1177 rv = AE_TYPE; 1178 goto fail; 1179 } 1180 1181 smpsw->smpsw_type = type; 1182 smpsw->smpsw_name = device_xname(sc->sc_dev); 1183 1184 if (sysmon_pswitch_register(smpsw) != 0) { 1185 rv = AE_ERROR; 1186 goto fail; 1187 } 1188 1189 AcpiClearEvent(event); 1190 1191 rv = AcpiInstallFixedEventHandler(event, 1192 acpi_fixed_button_handler, smpsw); 1193 1194 if (ACPI_FAILURE(rv)) { 1195 sysmon_pswitch_unregister(smpsw); 1196 goto fail; 1197 } 1198 1199 aprint_debug_dev(sc->sc_dev, "fixed %s button present\n", 1200 (type != ACPI_EVENT_SLEEP_BUTTON) ? "power" : "sleep"); 1201 1202 return; 1203 1204 fail: 1205 aprint_error_dev(sc->sc_dev, "failed to register " 1206 "fixed event %d: %s\n", event, AcpiFormatException(rv)); 1207 } 1208 1209 static void 1210 acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1211 { 1212 struct sysmon_pswitch *smpsw; 1213 ACPI_STATUS rv; 1214 1215 switch (event) { 1216 1217 case ACPI_EVENT_POWER_BUTTON: 1218 smpsw = &sc->sc_smpsw_power; 1219 1220 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1221 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1222 return; 1223 } 1224 1225 break; 1226 1227 case ACPI_EVENT_SLEEP_BUTTON: 1228 smpsw = &sc->sc_smpsw_sleep; 1229 1230 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1231 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1232 return; 1233 } 1234 1235 break; 1236 1237 default: 1238 rv = AE_TYPE; 1239 goto fail; 1240 } 1241 1242 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1243 1244 if (ACPI_SUCCESS(rv)) { 1245 sysmon_pswitch_unregister(smpsw); 1246 return; 1247 } 1248 1249 fail: 1250 aprint_error_dev(sc->sc_dev, "failed to deregister " 1251 "fixed event: %s\n", AcpiFormatException(rv)); 1252 } 1253 1254 static uint32_t 1255 acpi_fixed_button_handler(void *context) 1256 { 1257 static const int handler = OSL_NOTIFY_HANDLER; 1258 struct sysmon_pswitch *smpsw = context; 1259 1260 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1261 1262 return ACPI_INTERRUPT_HANDLED; 1263 } 1264 1265 static void 1266 acpi_fixed_button_pressed(void *context) 1267 { 1268 struct sysmon_pswitch *smpsw = context; 1269 1270 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1271 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1272 "power" : "sleep")); 1273 1274 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1275 } 1276 1277 /* 1278 * Sleep. 1279 */ 1280 static void 1281 acpi_sleep_init(struct acpi_softc *sc) 1282 { 1283 uint8_t a, b, i; 1284 ACPI_STATUS rv; 1285 1286 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1287 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1288 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1289 1290 /* 1291 * Evaluate supported sleep states. 1292 */ 1293 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1294 1295 rv = AcpiGetSleepTypeData(i, &a, &b); 1296 1297 if (ACPI_SUCCESS(rv)) 1298 sc->sc_sleepstates |= __BIT(i); 1299 } 1300 } 1301 1302 /* 1303 * Must be called with interrupts enabled. 1304 */ 1305 void 1306 acpi_enter_sleep_state(int state) 1307 { 1308 struct acpi_softc *sc = acpi_softc; 1309 ACPI_STATUS rv; 1310 1311 if (acpi_softc == NULL) 1312 return; 1313 1314 if (state == sc->sc_sleepstate) 1315 return; 1316 1317 if (state < ACPI_STATE_S0 || state > ACPI_STATE_S5) 1318 return; 1319 1320 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1321 1322 switch (state) { 1323 1324 case ACPI_STATE_S0: 1325 sc->sc_sleepstate = ACPI_STATE_S0; 1326 return; 1327 1328 case ACPI_STATE_S1: 1329 case ACPI_STATE_S2: 1330 case ACPI_STATE_S3: 1331 case ACPI_STATE_S4: 1332 1333 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1334 aprint_error_dev(sc->sc_dev, "sleep state " 1335 "S%d is not available\n", state); 1336 return; 1337 } 1338 1339 /* 1340 * Evaluate the _TTS method. This should be done before 1341 * pmf_system_suspend(9) and the evaluation of _PTS. 1342 * We should also re-evaluate this once we return to 1343 * S0 or if we abort the sleep state transition in the 1344 * middle (see ACPI 3.0, section 7.3.6). In reality, 1345 * however, the _TTS method is seldom seen in the field. 1346 */ 1347 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1348 1349 if (ACPI_SUCCESS(rv)) 1350 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1351 1352 if (state != ACPI_STATE_S1 && 1353 pmf_system_suspend(PMF_Q_NONE) != true) { 1354 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1355 break; 1356 } 1357 1358 /* 1359 * This will evaluate the _PTS and _SST methods, 1360 * but unlike the documentation claims, not _GTS, 1361 * which is evaluated in AcpiEnterSleepState(). 1362 * This must be called with interrupts enabled. 1363 */ 1364 rv = AcpiEnterSleepStatePrep(state); 1365 1366 if (ACPI_FAILURE(rv)) { 1367 aprint_error_dev(sc->sc_dev, "failed to prepare " 1368 "S%d: %s\n", state, AcpiFormatException(rv)); 1369 break; 1370 } 1371 1372 /* 1373 * After the _PTS method has been evaluated, we can 1374 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1375 */ 1376 acpi_wakedev_commit(sc, state); 1377 1378 sc->sc_sleepstate = state; 1379 1380 if (state == ACPI_STATE_S1) { 1381 1382 /* 1383 * Before the transition to S1, CPU caches 1384 * must be flushed (see ACPI 4.0, 7.3.4.2). 1385 * 1386 * Note that interrupts must be off before 1387 * calling AcpiEnterSleepState(). Conversely, 1388 * AcpiLeaveSleepState() should always be 1389 * called with interrupts enabled. 1390 */ 1391 acpi_md_OsDisableInterrupt(); 1392 1393 ACPI_FLUSH_CPU_CACHE(); 1394 rv = AcpiEnterSleepState(state); 1395 1396 if (ACPI_FAILURE(rv)) 1397 aprint_error_dev(sc->sc_dev, "failed to " 1398 "enter S1: %s\n", AcpiFormatException(rv)); 1399 1400 /* 1401 * Clear fixed events and disable all GPEs before 1402 * interrupts are enabled. 1403 */ 1404 AcpiClearEvent(ACPI_EVENT_PMTIMER); 1405 AcpiClearEvent(ACPI_EVENT_GLOBAL); 1406 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON); 1407 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON); 1408 AcpiClearEvent(ACPI_EVENT_RTC); 1409 AcpiHwDisableAllGpes(); 1410 1411 acpi_md_OsEnableInterrupt(); 1412 rv = AcpiLeaveSleepState(state); 1413 1414 } else { 1415 1416 (void)acpi_md_sleep(state); 1417 1418 if (state == ACPI_STATE_S4) 1419 AcpiEnable(); 1420 1421 (void)pmf_system_bus_resume(PMF_Q_NONE); 1422 (void)AcpiLeaveSleepState(state); 1423 (void)AcpiSetFirmwareWakingVector(0, 0); 1424 (void)pmf_system_resume(PMF_Q_NONE); 1425 } 1426 1427 /* 1428 * No wake GPEs should be enabled at runtime. 1429 */ 1430 acpi_wakedev_commit(sc, ACPI_STATE_S0); 1431 break; 1432 1433 case ACPI_STATE_S5: 1434 1435 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1436 1437 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1438 1439 if (ACPI_FAILURE(rv)) { 1440 aprint_error_dev(sc->sc_dev, "failed to prepare " 1441 "S%d: %s\n", state, AcpiFormatException(rv)); 1442 break; 1443 } 1444 1445 (void)AcpiDisableAllGpes(); 1446 1447 DELAY(1000000); 1448 1449 sc->sc_sleepstate = state; 1450 acpi_md_OsDisableInterrupt(); 1451 1452 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1453 1454 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1455 1456 break; 1457 } 1458 1459 sc->sc_sleepstate = ACPI_STATE_S0; 1460 1461 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1462 } 1463 1464 /* 1465 * Sysctl. 1466 */ 1467 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1468 { 1469 const struct sysctlnode *rnode, *snode; 1470 int err; 1471 1472 err = sysctl_createv(clog, 0, NULL, &rnode, 1473 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1474 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1475 NULL, 0, NULL, 0, 1476 CTL_HW, CTL_CREATE, CTL_EOL); 1477 1478 if (err != 0) 1479 return; 1480 1481 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1482 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1483 "root", SYSCTL_DESCR("ACPI root pointer"), 1484 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1485 CTL_CREATE, CTL_EOL); 1486 1487 err = sysctl_createv(clog, 0, &rnode, &snode, 1488 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1489 "sleep", SYSCTL_DESCR("ACPI sleep"), 1490 NULL, 0, NULL, 0, 1491 CTL_CREATE, CTL_EOL); 1492 1493 if (err != 0) 1494 return; 1495 1496 (void)sysctl_createv(NULL, 0, &snode, NULL, 1497 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1498 "state", SYSCTL_DESCR("System sleep state"), 1499 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1500 CTL_CREATE, CTL_EOL); 1501 1502 (void)sysctl_createv(NULL, 0, &snode, NULL, 1503 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1504 "states", SYSCTL_DESCR("Supported sleep states"), 1505 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1506 CTL_CREATE, CTL_EOL); 1507 1508 err = sysctl_createv(clog, 0, &rnode, &rnode, 1509 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1510 "stat", SYSCTL_DESCR("ACPI statistics"), 1511 NULL, 0, NULL, 0, 1512 CTL_CREATE, CTL_EOL); 1513 1514 if (err != 0) 1515 return; 1516 1517 (void)sysctl_createv(clog, 0, &rnode, NULL, 1518 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1519 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1520 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1521 CTL_CREATE, CTL_EOL); 1522 1523 (void)sysctl_createv(clog, 0, &rnode, NULL, 1524 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1525 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1526 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1527 CTL_CREATE, CTL_EOL); 1528 1529 (void)sysctl_createv(clog, 0, &rnode, NULL, 1530 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1531 "fixed", SYSCTL_DESCR("Number of fixed events"), 1532 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1533 CTL_CREATE, CTL_EOL); 1534 1535 (void)sysctl_createv(clog, 0, &rnode, NULL, 1536 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1537 "method", SYSCTL_DESCR("Number of methods executed"), 1538 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1539 CTL_CREATE, CTL_EOL); 1540 1541 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1542 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1543 } 1544 1545 static int 1546 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1547 { 1548 struct sysctlnode node; 1549 uint64_t t; 1550 int err, i; 1551 1552 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1553 t += AcpiFixedEventCount[i]; 1554 1555 node = *rnode; 1556 node.sysctl_data = &t; 1557 1558 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1559 1560 if (err || newp == NULL) 1561 return err; 1562 1563 return 0; 1564 } 1565 1566 static int 1567 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1568 { 1569 struct acpi_softc *sc = acpi_softc; 1570 struct sysctlnode node; 1571 int err, t; 1572 1573 if (acpi_softc == NULL) 1574 return ENOSYS; 1575 1576 node = *rnode; 1577 t = sc->sc_sleepstate; 1578 node.sysctl_data = &t; 1579 1580 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1581 1582 if (err || newp == NULL) 1583 return err; 1584 1585 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1586 return EINVAL; 1587 1588 acpi_enter_sleep_state(t); 1589 1590 return 0; 1591 } 1592 1593 static int 1594 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1595 { 1596 struct acpi_softc *sc = acpi_softc; 1597 struct sysctlnode node; 1598 char t[3 * 6 + 1]; 1599 int err; 1600 1601 if (acpi_softc == NULL) 1602 return ENOSYS; 1603 1604 (void)memset(t, '\0', sizeof(t)); 1605 1606 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1607 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1608 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1609 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1610 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1611 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1612 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1613 1614 node = *rnode; 1615 node.sysctl_data = &t; 1616 1617 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1618 1619 if (err || newp == NULL) 1620 return err; 1621 1622 return 0; 1623 } 1624 1625 /* 1626 * Tables. 1627 */ 1628 ACPI_PHYSICAL_ADDRESS 1629 acpi_OsGetRootPointer(void) 1630 { 1631 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1632 1633 /* 1634 * We let MD code handle this since there are multiple ways to do it: 1635 * 1636 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1637 * 1638 * IA-64: Use the EFI. 1639 */ 1640 PhysicalAddress = acpi_md_OsGetRootPointer(); 1641 1642 if (acpi_root_pointer == 0) 1643 acpi_root_pointer = PhysicalAddress; 1644 1645 return PhysicalAddress; 1646 } 1647 1648 static ACPI_TABLE_HEADER * 1649 acpi_map_rsdt(void) 1650 { 1651 ACPI_PHYSICAL_ADDRESS paddr; 1652 ACPI_TABLE_RSDP *rsdp; 1653 1654 paddr = AcpiOsGetRootPointer(); 1655 1656 if (paddr == 0) 1657 return NULL; 1658 1659 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1660 1661 if (rsdp == NULL) 1662 return NULL; 1663 1664 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1665 paddr = rsdp->XsdtPhysicalAddress; 1666 else 1667 paddr = rsdp->RsdtPhysicalAddress; 1668 1669 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1670 1671 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1672 } 1673 1674 /* 1675 * XXX: Refactor to be a generic function that unmaps tables. 1676 */ 1677 static void 1678 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1679 { 1680 1681 if (rsdt == NULL) 1682 return; 1683 1684 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1685 } 1686 1687 /* 1688 * XXX: Refactor to be a generic function that maps tables. 1689 */ 1690 ACPI_STATUS 1691 acpi_madt_map(void) 1692 { 1693 ACPI_STATUS rv; 1694 1695 if (madt_header != NULL) 1696 return AE_ALREADY_EXISTS; 1697 1698 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); 1699 1700 if (ACPI_FAILURE(rv)) 1701 return rv; 1702 1703 return AE_OK; 1704 } 1705 1706 void 1707 acpi_madt_unmap(void) 1708 { 1709 madt_header = NULL; 1710 } 1711 1712 /* 1713 * XXX: Refactor to be a generic function that walks tables. 1714 */ 1715 void 1716 acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) 1717 { 1718 ACPI_SUBTABLE_HEADER *hdrp; 1719 char *madtend, *where; 1720 1721 madtend = (char *)madt_header + madt_header->Length; 1722 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); 1723 1724 while (where < madtend) { 1725 1726 hdrp = (ACPI_SUBTABLE_HEADER *)where; 1727 1728 if (ACPI_FAILURE(func(hdrp, aux))) 1729 break; 1730 1731 where += hdrp->Length; 1732 } 1733 } 1734 1735 /* 1736 * Miscellaneous. 1737 */ 1738 static bool 1739 acpi_is_scope(struct acpi_devnode *ad) 1740 { 1741 int i; 1742 1743 /* 1744 * Return true if the node is a root scope. 1745 */ 1746 if (ad->ad_parent == NULL) 1747 return false; 1748 1749 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1750 return false; 1751 1752 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1753 1754 if (acpi_scopes[i] == NULL) 1755 continue; 1756 1757 if (ad->ad_handle == acpi_scopes[i]) 1758 return true; 1759 } 1760 1761 return false; 1762 } 1763 1764 /* 1765 * ACPIVERBOSE. 1766 */ 1767 void 1768 acpi_load_verbose(void) 1769 { 1770 1771 if (acpi_verbose_loaded == 0) 1772 module_autoload("acpiverbose", MODULE_CLASS_MISC); 1773 } 1774 1775 void 1776 acpi_print_verbose_stub(struct acpi_softc *sc) 1777 { 1778 1779 acpi_load_verbose(); 1780 1781 if (acpi_verbose_loaded != 0) 1782 acpi_print_verbose(sc); 1783 } 1784 1785 void 1786 acpi_print_dev_stub(const char *pnpstr) 1787 { 1788 1789 acpi_load_verbose(); 1790 1791 if (acpi_verbose_loaded != 0) 1792 acpi_print_dev(pnpstr); 1793 } 1794 1795 MALLOC_DECLARE(M_ACPI); /* XXX: ACPI_ACTIVATE_DEV should use kmem(9). */ 1796 1797 /* 1798 * ACPI_ACTIVATE_DEV. 1799 */ 1800 static void 1801 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 1802 { 1803 1804 #ifndef ACPI_ACTIVATE_DEV 1805 return; 1806 } 1807 #else 1808 static const int valid = ACPI_VALID_STA | ACPI_VALID_HID; 1809 ACPI_DEVICE_INFO *newdi; 1810 ACPI_STATUS rv; 1811 uint32_t old; 1812 1813 /* 1814 * If the device is valid and present, 1815 * but not enabled, try to activate it. 1816 */ 1817 if (((*di)->Valid & valid) != valid) 1818 return; 1819 1820 old = (*di)->CurrentStatus; 1821 1822 if ((old & (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED)) != 1823 ACPI_STA_DEVICE_PRESENT) 1824 return; 1825 1826 rv = acpi_allocate_resources(handle); 1827 1828 if (ACPI_FAILURE(rv)) 1829 goto fail; 1830 1831 rv = AcpiGetObjectInfo(handle, &newdi); 1832 1833 if (ACPI_FAILURE(rv)) 1834 goto fail; 1835 1836 ACPI_FREE(*di); 1837 *di = newdi; 1838 1839 aprint_verbose_dev(acpi_softc->sc_dev, 1840 "%s activated, STA 0x%08X -> STA 0x%08X\n", 1841 (*di)->HardwareId.String, old, (*di)->CurrentStatus); 1842 1843 return; 1844 1845 fail: 1846 aprint_error_dev(acpi_softc->sc_dev, "failed to " 1847 "activate %s\n", (*di)->HardwareId.String); 1848 } 1849 1850 /* 1851 * XXX: This very incomplete. 1852 */ 1853 ACPI_STATUS 1854 acpi_allocate_resources(ACPI_HANDLE handle) 1855 { 1856 ACPI_BUFFER bufp, bufc, bufn; 1857 ACPI_RESOURCE *resp, *resc, *resn; 1858 ACPI_RESOURCE_IRQ *irq; 1859 #if 0 1860 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 1861 #endif 1862 ACPI_STATUS rv; 1863 uint delta; 1864 1865 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 1866 if (ACPI_FAILURE(rv)) 1867 goto out; 1868 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 1869 if (ACPI_FAILURE(rv)) { 1870 goto out1; 1871 } 1872 1873 bufn.Length = 1000; 1874 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 1875 resp = bufp.Pointer; 1876 resc = bufc.Pointer; 1877 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 1878 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1879 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 1880 resp = ACPI_NEXT_RESOURCE(resp); 1881 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 1882 break; 1883 /* Found identical Id */ 1884 resn->Type = resc->Type; 1885 switch (resc->Type) { 1886 case ACPI_RESOURCE_TYPE_IRQ: 1887 memcpy(&resn->Data, &resp->Data, 1888 sizeof(ACPI_RESOURCE_IRQ)); 1889 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 1890 irq->Interrupts[0] = 1891 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 1892 Interrupts[irq->InterruptCount-1]; 1893 irq->InterruptCount = 1; 1894 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 1895 break; 1896 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 1897 memcpy(&resn->Data, &resp->Data, 1898 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 1899 #if 0 1900 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 1901 /* 1902 * XXX: Not duplicating the interrupt logic above 1903 * because its not clear what it accomplishes. 1904 */ 1905 xirq->Interrupts[0] = 1906 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 1907 Interrupts[irq->NumberOfInterrupts-1]; 1908 xirq->NumberOfInterrupts = 1; 1909 #endif 1910 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 1911 break; 1912 case ACPI_RESOURCE_TYPE_IO: 1913 memcpy(&resn->Data, &resp->Data, 1914 sizeof(ACPI_RESOURCE_IO)); 1915 resn->Length = resp->Length; 1916 break; 1917 default: 1918 aprint_error_dev(acpi_softc->sc_dev, 1919 "%s: invalid type %u\n", __func__, resc->Type); 1920 rv = AE_BAD_DATA; 1921 goto out2; 1922 } 1923 resc = ACPI_NEXT_RESOURCE(resc); 1924 resn = ACPI_NEXT_RESOURCE(resn); 1925 resp = ACPI_NEXT_RESOURCE(resp); 1926 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 1927 if (delta >= 1928 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 1929 bufn.Length *= 2; 1930 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 1931 M_ACPI, M_WAITOK); 1932 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 1933 delta); 1934 } 1935 } 1936 1937 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1938 aprint_error_dev(acpi_softc->sc_dev, 1939 "%s: resc not exhausted\n", __func__); 1940 rv = AE_BAD_DATA; 1941 goto out3; 1942 } 1943 1944 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 1945 rv = AcpiSetCurrentResources(handle, &bufn); 1946 1947 if (ACPI_FAILURE(rv)) 1948 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 1949 "resources: %s\n", __func__, AcpiFormatException(rv)); 1950 1951 out3: 1952 free(bufn.Pointer, M_ACPI); 1953 out2: 1954 ACPI_FREE(bufc.Pointer); 1955 out1: 1956 ACPI_FREE(bufp.Pointer); 1957 out: 1958 return rv; 1959 } 1960 1961 #endif /* ACPI_ACTIVATE_DEV */ 1962
Indexes created Wed Oct 01 19:09:53 GMT 2025