acpi.c revision 1.254.2.2
1 /* $NetBSD: acpi.c,v 1.254.2.2 2012/11/20 03:01:58 tls 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 1.254.2.2 2012/11/20 03:01:58 tls 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_osd.h> 122 #include <dev/acpi/acpi_pci.h> 123 #include <dev/acpi/acpi_power.h> 124 #include <dev/acpi/acpi_timer.h> 125 #include <dev/acpi/acpi_wakedev.h> 126 127 #include <machine/acpi_machdep.h> 128 129 #define _COMPONENT ACPI_BUS_COMPONENT 130 ACPI_MODULE_NAME ("acpi") 131 132 /* 133 * The acpi_active variable is set when the ACPI subsystem is active. 134 * Machine-dependent code may wish to skip other steps (such as attaching 135 * subsystems that ACPI supercedes) when ACPI is active. 136 */ 137 int acpi_active = 0; 138 int acpi_suspended = 0; 139 int acpi_force_load = 0; 140 int acpi_verbose_loaded = 0; 141 142 struct acpi_softc *acpi_softc = NULL; 143 static uint64_t acpi_root_pointer; 144 extern kmutex_t acpi_interrupt_list_mtx; 145 extern struct cfdriver acpi_cd; 146 static ACPI_HANDLE acpi_scopes[4]; 147 ACPI_TABLE_HEADER *madt_header; 148 149 /* 150 * This structure provides a context for the ACPI 151 * namespace walk performed in acpi_build_tree(). 152 */ 153 struct acpi_walkcontext { 154 struct acpi_softc *aw_sc; 155 struct acpi_devnode *aw_parent; 156 }; 157 158 /* 159 * Ignored HIDs. 160 */ 161 static const char * const acpi_ignored_ids[] = { 162 #if defined(i386) || defined(x86_64) 163 "ACPI0007", /* ACPI CPUs do not attach to acpi(4) */ 164 "PNP0000", /* AT interrupt controller is handled internally */ 165 "PNP0200", /* AT DMA controller is handled internally */ 166 "PNP0A??", /* PCI Busses are handled internally */ 167 "PNP0B00", /* AT RTC is handled internally */ 168 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 169 #endif 170 #if defined(x86_64) 171 "PNP0C04", /* FPU is handled internally */ 172 #endif 173 NULL 174 }; 175 176 /* 177 * Devices that should be attached early. 178 */ 179 static const char * const acpi_early_ids[] = { 180 "PNP0C09", /* acpiec(4) */ 181 NULL 182 }; 183 184 static int acpi_match(device_t, cfdata_t, void *); 185 static int acpi_submatch(device_t, cfdata_t, const int *, void *); 186 static void acpi_attach(device_t, device_t, void *); 187 static int acpi_detach(device_t, int); 188 static void acpi_childdet(device_t, device_t); 189 static bool acpi_suspend(device_t, const pmf_qual_t *); 190 static bool acpi_resume(device_t, const pmf_qual_t *); 191 192 static void acpi_build_tree(struct acpi_softc *); 193 static void acpi_config_tree(struct acpi_softc *); 194 static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, 195 void *, void **); 196 static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t, 197 void *, void **); 198 static void acpi_make_name(struct acpi_devnode *, uint32_t); 199 200 static int acpi_rescan(device_t, const char *, const int *); 201 static void acpi_rescan_early(struct acpi_softc *); 202 static void acpi_rescan_nodes(struct acpi_softc *); 203 static void acpi_rescan_capabilities(device_t); 204 static int acpi_print(void *aux, const char *); 205 206 static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); 207 208 static void acpi_register_fixed_button(struct acpi_softc *, int); 209 static void acpi_deregister_fixed_button(struct acpi_softc *, int); 210 static uint32_t acpi_fixed_button_handler(void *); 211 static void acpi_fixed_button_pressed(void *); 212 213 static void acpi_sleep_init(struct acpi_softc *); 214 215 static int sysctl_hw_acpi_fixedstats(SYSCTLFN_PROTO); 216 static int sysctl_hw_acpi_sleepstate(SYSCTLFN_PROTO); 217 static int sysctl_hw_acpi_sleepstates(SYSCTLFN_PROTO); 218 219 static bool acpi_is_scope(struct acpi_devnode *); 220 static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 221 static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 222 223 void acpi_print_verbose_stub(struct acpi_softc *); 224 void acpi_print_dev_stub(const char *); 225 226 static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **); 227 ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE); 228 229 void (*acpi_print_verbose)(struct acpi_softc *) = acpi_print_verbose_stub; 230 void (*acpi_print_dev)(const char *) = acpi_print_dev_stub; 231 232 CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 233 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 234 235 /* 236 * Probe for ACPI support. 237 * 238 * This is called by the machine-dependent ACPI front-end. 239 * Note: this is not an autoconfiguration interface function. 240 */ 241 int 242 acpi_probe(void) 243 { 244 ACPI_TABLE_HEADER *rsdt; 245 ACPI_STATUS rv; 246 int quirks; 247 248 if (acpi_softc != NULL) 249 panic("%s: already probed", __func__); 250 251 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 252 253 /* 254 * Start up ACPICA. 255 */ 256 AcpiGbl_AllMethodsSerialized = false; 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 /* Clamp the max transfer size - assume LPC devs may be beneath us. */ 443 self->dv_maxphys = MIN(parent->dv_maxphys, 64 * 1024); 444 445 sc->sc_dev = self; 446 sc->sc_root = NULL; 447 448 sc->sc_sleepstate = ACPI_STATE_S0; 449 sc->sc_quirks = acpi_find_quirks(); 450 451 sysmon_power_settype("acpi"); 452 453 sc->sc_iot = aa->aa_iot; 454 sc->sc_memt = aa->aa_memt; 455 sc->sc_pc = aa->aa_pc; 456 sc->sc_pciflags = aa->aa_pciflags; 457 sc->sc_ic = aa->aa_ic; 458 459 SIMPLEQ_INIT(&sc->ad_head); 460 461 acpi_softc = sc; 462 463 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) 464 aprint_error_dev(self, "couldn't establish power handler\n"); 465 466 /* 467 * Bring ACPICA on-line. 468 */ 469 470 rv = AcpiEnableSubsystem(ACPI_FULL_INITIALIZATION); 471 472 if (ACPI_FAILURE(rv)) 473 goto fail; 474 475 /* 476 * Early initialization of acpiec(4) via ECDT. 477 */ 478 (void)config_found_ia(self, "acpiecdtbus", aa, NULL); 479 480 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 481 482 if (ACPI_FAILURE(rv)) 483 goto fail; 484 485 /* 486 * Scan the namespace and build our device tree. 487 */ 488 acpi_build_tree(sc); 489 490 acpi_md_callback(sc); 491 492 /* 493 * Early initialization of the _PDC control method 494 * that may load additional SSDT tables dynamically. 495 */ 496 (void)acpi_md_pdc(); 497 498 /* 499 * Install global notify handlers. 500 */ 501 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 502 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 503 504 if (ACPI_FAILURE(rv)) 505 goto fail; 506 507 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 508 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 509 510 if (ACPI_FAILURE(rv)) 511 goto fail; 512 513 acpi_active = 1; 514 515 /* Show SCI interrupt. */ 516 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 517 AcpiGbl_FADT.SciInterrupt); 518 519 /* 520 * Install fixed-event handlers. 521 */ 522 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 523 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 524 525 acpitimer_init(sc); 526 acpi_config_tree(sc); 527 acpi_sleep_init(sc); 528 529 #ifdef ACPI_DEBUG 530 acpi_debug_init(); 531 #endif 532 533 /* 534 * Print debug information. 535 */ 536 acpi_print_verbose(sc); 537 538 return; 539 540 fail: 541 aprint_error("%s: failed to initialize ACPI: %s\n", 542 __func__, AcpiFormatException(rv)); 543 } 544 545 /* 546 * XXX: This is incomplete. 547 */ 548 static int 549 acpi_detach(device_t self, int flags) 550 { 551 struct acpi_softc *sc = device_private(self); 552 ACPI_STATUS rv; 553 int rc; 554 555 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 556 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 557 558 if (ACPI_FAILURE(rv)) 559 return EBUSY; 560 561 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 562 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 563 564 if (ACPI_FAILURE(rv)) 565 return EBUSY; 566 567 if ((rc = config_detach_children(self, flags)) != 0) 568 return rc; 569 570 if ((rc = acpitimer_detach()) != 0) 571 return rc; 572 573 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 574 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 575 576 pmf_device_deregister(self); 577 578 acpi_softc = NULL; 579 580 return 0; 581 } 582 583 static void 584 acpi_childdet(device_t self, device_t child) 585 { 586 struct acpi_softc *sc = device_private(self); 587 struct acpi_devnode *ad; 588 589 if (sc->sc_apmbus == child) 590 sc->sc_apmbus = NULL; 591 592 if (sc->sc_hpet == child) 593 sc->sc_hpet = NULL; 594 595 if (sc->sc_wdrt == child) 596 sc->sc_wdrt = NULL; 597 598 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 599 600 if (ad->ad_device == child) 601 ad->ad_device = NULL; 602 } 603 } 604 605 static bool 606 acpi_suspend(device_t dv, const pmf_qual_t *qual) 607 { 608 609 acpi_suspended = 1; 610 611 return true; 612 } 613 614 static bool 615 acpi_resume(device_t dv, const pmf_qual_t *qual) 616 { 617 618 acpi_suspended = 0; 619 620 return true; 621 } 622 623 /* 624 * Namespace scan. 625 */ 626 static void 627 acpi_build_tree(struct acpi_softc *sc) 628 { 629 struct acpi_walkcontext awc; 630 631 /* 632 * Get the root scope handles. 633 */ 634 KASSERT(__arraycount(acpi_scopes) == 4); 635 636 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 637 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 638 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 639 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 640 641 /* 642 * Make the root node. 643 */ 644 awc.aw_sc = sc; 645 awc.aw_parent = NULL; 646 647 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 648 649 KASSERT(sc->sc_root == NULL); 650 KASSERT(awc.aw_parent != NULL); 651 652 sc->sc_root = awc.aw_parent; 653 654 /* 655 * Build the internal namespace. 656 */ 657 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 658 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 659 660 /* 661 * Scan the internal namespace. 662 */ 663 (void)acpi_pcidev_scan(sc->sc_root); 664 } 665 666 static void 667 acpi_config_tree(struct acpi_softc *sc) 668 { 669 670 /* 671 * Configure all everything found "at acpi?". 672 */ 673 (void)acpi_rescan(sc->sc_dev, NULL, NULL); 674 675 /* 676 * Update GPE information. 677 * 678 * Note that this must be called after 679 * all GPE handlers have been installed. 680 */ 681 (void)AcpiUpdateAllGpes(); 682 683 /* 684 * Defer rest of the configuration. 685 */ 686 (void)config_defer(sc->sc_dev, acpi_rescan_capabilities); 687 } 688 689 static ACPI_STATUS 690 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 691 void *context, void **status) 692 { 693 struct acpi_walkcontext *awc = context; 694 struct acpi_softc *sc = awc->aw_sc; 695 struct acpi_devnode *ad; 696 ACPI_DEVICE_INFO *devinfo; 697 ACPI_OBJECT_TYPE type; 698 ACPI_STATUS rv; 699 700 rv = AcpiGetObjectInfo(handle, &devinfo); 701 702 if (ACPI_FAILURE(rv)) 703 return AE_OK; /* Do not terminate the walk. */ 704 705 type = devinfo->Type; 706 707 switch (type) { 708 709 case ACPI_TYPE_DEVICE: 710 acpi_activate_device(handle, &devinfo); 711 case ACPI_TYPE_PROCESSOR: 712 case ACPI_TYPE_THERMAL: 713 case ACPI_TYPE_POWER: 714 715 ad = kmem_zalloc(sizeof(*ad), KM_SLEEP); 716 717 if (ad == NULL) 718 return AE_NO_MEMORY; 719 720 ad->ad_device = NULL; 721 ad->ad_notify = NULL; 722 ad->ad_pciinfo = NULL; 723 ad->ad_wakedev = NULL; 724 725 ad->ad_type = type; 726 ad->ad_handle = handle; 727 ad->ad_devinfo = devinfo; 728 729 ad->ad_root = sc->sc_dev; 730 ad->ad_parent = awc->aw_parent; 731 732 acpi_match_node_init(ad); 733 acpi_make_name(ad, devinfo->Name); 734 735 /* 736 * Identify wake GPEs from the _PRW. Note that 737 * AcpiUpdateAllGpes() must be called afterwards. 738 */ 739 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) 740 acpi_wakedev_init(ad); 741 742 SIMPLEQ_INIT(&ad->ad_child_head); 743 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 744 745 if (ad->ad_parent != NULL) { 746 747 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 748 ad, ad_child_list); 749 } 750 751 awc->aw_parent = ad; 752 } 753 754 return AE_OK; 755 } 756 757 static ACPI_STATUS 758 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 759 void *context, void **status) 760 { 761 struct acpi_walkcontext *awc = context; 762 763 KASSERT(awc != NULL); 764 KASSERT(awc->aw_parent != NULL); 765 766 if (handle == awc->aw_parent->ad_handle) 767 awc->aw_parent = awc->aw_parent->ad_parent; 768 769 return AE_OK; 770 } 771 772 static void 773 acpi_make_name(struct acpi_devnode *ad, uint32_t name) 774 { 775 ACPI_NAME_UNION *anu; 776 int clear, i; 777 778 anu = (ACPI_NAME_UNION *)&name; 779 ad->ad_name[4] = '\0'; 780 781 for (i = 3, clear = 0; i >= 0; i--) { 782 783 if (clear == 0 && anu->Ascii[i] == '_') 784 ad->ad_name[i] = '\0'; 785 else { 786 ad->ad_name[i] = anu->Ascii[i]; 787 clear = 1; 788 } 789 } 790 791 if (ad->ad_name[0] == '\0') 792 ad->ad_name[0] = '_'; 793 } 794 795 /* 796 * Device attachment. 797 */ 798 static int 799 acpi_rescan(device_t self, const char *ifattr, const int *locators) 800 { 801 struct acpi_softc *sc = device_private(self); 802 struct acpi_attach_args aa; 803 804 /* 805 * Try to attach hpet(4) first via a specific table. 806 */ 807 aa.aa_memt = sc->sc_memt; 808 809 if (ifattr_match(ifattr, "acpihpetbus") && sc->sc_hpet == NULL) 810 sc->sc_hpet = config_found_ia(sc->sc_dev, 811 "acpihpetbus", &aa, NULL); 812 813 /* 814 * A two-pass scan for acpinodebus. 815 */ 816 if (ifattr_match(ifattr, "acpinodebus")) { 817 acpi_rescan_early(sc); 818 acpi_rescan_nodes(sc); 819 } 820 821 /* 822 * Attach APM emulation and acpiwdrt(4). 823 */ 824 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 825 sc->sc_apmbus = config_found_ia(sc->sc_dev, 826 "acpiapmbus", NULL, NULL); 827 828 if (ifattr_match(ifattr, "acpiwdrtbus") && sc->sc_wdrt == NULL) 829 sc->sc_wdrt = config_found_ia(sc->sc_dev, 830 "acpiwdrtbus", NULL, NULL); 831 832 return 0; 833 } 834 835 static void 836 acpi_rescan_early(struct acpi_softc *sc) 837 { 838 struct acpi_attach_args aa; 839 struct acpi_devnode *ad; 840 841 /* 842 * First scan for devices such as acpiec(4) that 843 * should be always attached before anything else. 844 * We want these devices to attach regardless of 845 * the device status and other restrictions. 846 */ 847 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 848 849 if (ad->ad_device != NULL) 850 continue; 851 852 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 853 continue; 854 855 if (acpi_match_hid(ad->ad_devinfo, acpi_early_ids) == 0) 856 continue; 857 858 aa.aa_node = ad; 859 aa.aa_iot = sc->sc_iot; 860 aa.aa_memt = sc->sc_memt; 861 aa.aa_pc = sc->sc_pc; 862 aa.aa_pciflags = sc->sc_pciflags; 863 aa.aa_ic = sc->sc_ic; 864 865 ad->ad_device = config_found_ia(sc->sc_dev, 866 "acpinodebus", &aa, acpi_print); 867 } 868 } 869 870 static void 871 acpi_rescan_nodes(struct acpi_softc *sc) 872 { 873 const char * const hpet_ids[] = { "PNP0103", NULL }; 874 struct acpi_attach_args aa; 875 struct acpi_devnode *ad; 876 ACPI_DEVICE_INFO *di; 877 878 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 879 880 if (ad->ad_device != NULL) 881 continue; 882 883 /* 884 * There is a bug in ACPICA: it defines the type 885 * of the scopes incorrectly for its own reasons. 886 */ 887 if (acpi_is_scope(ad) != false) 888 continue; 889 890 di = ad->ad_devinfo; 891 892 /* 893 * We only attach devices which are present, enabled, and 894 * functioning properly. However, if a device is enabled, 895 * it is decoding resources and we should claim these, 896 * if possible. This requires changes to bus_space(9). 897 * Note: there is a possible race condition, because _STA 898 * may have changed since di->CurrentStatus was set. 899 */ 900 if (di->Type == ACPI_TYPE_DEVICE) { 901 902 if ((di->Valid & ACPI_VALID_STA) != 0 && 903 (di->CurrentStatus & ACPI_STA_OK) != ACPI_STA_OK) 904 continue; 905 } 906 907 if (di->Type == ACPI_TYPE_POWER) 908 continue; 909 910 if (di->Type == ACPI_TYPE_PROCESSOR) 911 continue; 912 913 if (acpi_match_hid(di, acpi_early_ids) != 0) 914 continue; 915 916 if (acpi_match_hid(di, acpi_ignored_ids) != 0) 917 continue; 918 919 if (acpi_match_hid(di, hpet_ids) != 0 && sc->sc_hpet != NULL) 920 continue; 921 922 aa.aa_node = ad; 923 aa.aa_iot = sc->sc_iot; 924 aa.aa_memt = sc->sc_memt; 925 aa.aa_pc = sc->sc_pc; 926 aa.aa_pciflags = sc->sc_pciflags; 927 aa.aa_ic = sc->sc_ic; 928 929 ad->ad_device = config_found_ia(sc->sc_dev, 930 "acpinodebus", &aa, acpi_print); 931 } 932 } 933 934 static void 935 acpi_rescan_capabilities(device_t self) 936 { 937 struct acpi_softc *sc = device_private(self); 938 struct acpi_devnode *ad; 939 ACPI_HANDLE tmp; 940 ACPI_STATUS rv; 941 942 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 943 944 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 945 continue; 946 947 /* 948 * Scan power resource capabilities. 949 * 950 * If any power states are supported, 951 * at least _PR0 and _PR3 must be present. 952 */ 953 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 954 955 if (ACPI_SUCCESS(rv)) { 956 ad->ad_flags |= ACPI_DEVICE_POWER; 957 acpi_power_add(ad); 958 } 959 960 /* 961 * Scan wake-up capabilities. 962 */ 963 if (ad->ad_wakedev != NULL) { 964 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 965 acpi_wakedev_add(ad); 966 } 967 968 /* 969 * Scan docking stations. 970 */ 971 rv = AcpiGetHandle(ad->ad_handle, "_DCK", &tmp); 972 973 if (ACPI_SUCCESS(rv)) 974 ad->ad_flags |= ACPI_DEVICE_DOCK; 975 976 /* 977 * Scan devices that are ejectable. 978 */ 979 rv = AcpiGetHandle(ad->ad_handle, "_EJ0", &tmp); 980 981 if (ACPI_SUCCESS(rv)) 982 ad->ad_flags |= ACPI_DEVICE_EJECT; 983 } 984 } 985 986 static int 987 acpi_print(void *aux, const char *pnp) 988 { 989 struct acpi_attach_args *aa = aux; 990 struct acpi_devnode *ad; 991 const char *hid, *uid; 992 ACPI_DEVICE_INFO *di; 993 994 ad = aa->aa_node; 995 di = ad->ad_devinfo; 996 997 hid = di->HardwareId.String; 998 uid = di->UniqueId.String; 999 1000 if (pnp != NULL) { 1001 1002 if (di->Type != ACPI_TYPE_DEVICE) { 1003 1004 aprint_normal("%s (ACPI Object Type '%s') at %s", 1005 ad->ad_name, AcpiUtGetTypeName(ad->ad_type), pnp); 1006 1007 return UNCONF; 1008 } 1009 1010 if ((di->Valid & ACPI_VALID_HID) == 0 || hid == NULL) 1011 return 0; 1012 1013 aprint_normal("%s (%s) ", ad->ad_name, hid); 1014 acpi_print_dev(hid); 1015 aprint_normal("at %s", pnp); 1016 1017 return UNCONF; 1018 } 1019 1020 aprint_normal(" (%s", ad->ad_name); 1021 1022 if ((di->Valid & ACPI_VALID_HID) != 0 && hid != NULL) { 1023 1024 aprint_normal(", %s", hid); 1025 1026 if ((di->Valid & ACPI_VALID_UID) != 0 && uid != NULL) { 1027 1028 if (uid[0] == '\0') 1029 uid = "<null>"; 1030 1031 aprint_normal("-%s", uid); 1032 } 1033 } 1034 1035 aprint_normal(")"); 1036 1037 return UNCONF; 1038 } 1039 1040 /* 1041 * Notify. 1042 */ 1043 static void 1044 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1045 { 1046 struct acpi_softc *sc = acpi_softc; 1047 struct acpi_devnode *ad; 1048 1049 KASSERT(sc != NULL); 1050 KASSERT(aux == NULL); 1051 KASSERT(acpi_active != 0); 1052 1053 if (acpi_suspended != 0) 1054 return; 1055 1056 /* 1057 * System: 0x00 - 0x7F. 1058 * Device: 0x80 - 0xFF. 1059 */ 1060 switch (event) { 1061 1062 case ACPI_NOTIFY_BUS_CHECK: 1063 case ACPI_NOTIFY_DEVICE_CHECK: 1064 case ACPI_NOTIFY_DEVICE_WAKE: 1065 case ACPI_NOTIFY_EJECT_REQUEST: 1066 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1067 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1068 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1069 case ACPI_NOTIFY_POWER_FAULT: 1070 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1071 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1072 case ACPI_NOTIFY_RESERVED: 1073 case ACPI_NOTIFY_LOCALITY_UPDATE: 1074 break; 1075 } 1076 1077 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1078 "%s (%p)\n", event, acpi_name(handle), handle)); 1079 1080 /* 1081 * We deliver notifications only to drivers 1082 * that have been successfully attached and 1083 * that have registered a handler with us. 1084 * The opaque pointer is always the device_t. 1085 */ 1086 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1087 1088 if (ad->ad_device == NULL) 1089 continue; 1090 1091 if (ad->ad_notify == NULL) 1092 continue; 1093 1094 if (ad->ad_handle != handle) 1095 continue; 1096 1097 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1098 1099 return; 1100 } 1101 1102 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1103 "for %s (%p)\n", event, acpi_name(handle), handle); 1104 } 1105 1106 bool 1107 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1108 { 1109 struct acpi_softc *sc = acpi_softc; 1110 1111 KASSERT(sc != NULL); 1112 KASSERT(acpi_active != 0); 1113 1114 if (acpi_suspended != 0) 1115 goto fail; 1116 1117 if (ad == NULL || notify == NULL) 1118 goto fail; 1119 1120 ad->ad_notify = notify; 1121 1122 return true; 1123 1124 fail: 1125 aprint_error_dev(sc->sc_dev, "failed to register notify " 1126 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1127 1128 return false; 1129 } 1130 1131 void 1132 acpi_deregister_notify(struct acpi_devnode *ad) 1133 { 1134 1135 ad->ad_notify = NULL; 1136 } 1137 1138 /* 1139 * Fixed buttons. 1140 */ 1141 static void 1142 acpi_register_fixed_button(struct acpi_softc *sc, int event) 1143 { 1144 struct sysmon_pswitch *smpsw; 1145 ACPI_STATUS rv; 1146 int type; 1147 1148 switch (event) { 1149 1150 case ACPI_EVENT_POWER_BUTTON: 1151 1152 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1153 return; 1154 1155 type = PSWITCH_TYPE_POWER; 1156 smpsw = &sc->sc_smpsw_power; 1157 break; 1158 1159 case ACPI_EVENT_SLEEP_BUTTON: 1160 1161 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1162 return; 1163 1164 type = PSWITCH_TYPE_SLEEP; 1165 smpsw = &sc->sc_smpsw_sleep; 1166 break; 1167 1168 default: 1169 rv = AE_TYPE; 1170 goto fail; 1171 } 1172 1173 smpsw->smpsw_type = type; 1174 smpsw->smpsw_name = device_xname(sc->sc_dev); 1175 1176 if (sysmon_pswitch_register(smpsw) != 0) { 1177 rv = AE_ERROR; 1178 goto fail; 1179 } 1180 1181 AcpiClearEvent(event); 1182 1183 rv = AcpiInstallFixedEventHandler(event, 1184 acpi_fixed_button_handler, smpsw); 1185 1186 if (ACPI_FAILURE(rv)) { 1187 sysmon_pswitch_unregister(smpsw); 1188 goto fail; 1189 } 1190 1191 aprint_debug_dev(sc->sc_dev, "fixed %s button present\n", 1192 (type != ACPI_EVENT_SLEEP_BUTTON) ? "power" : "sleep"); 1193 1194 return; 1195 1196 fail: 1197 aprint_error_dev(sc->sc_dev, "failed to register " 1198 "fixed event %d: %s\n", event, AcpiFormatException(rv)); 1199 } 1200 1201 static void 1202 acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1203 { 1204 struct sysmon_pswitch *smpsw; 1205 ACPI_STATUS rv; 1206 1207 switch (event) { 1208 1209 case ACPI_EVENT_POWER_BUTTON: 1210 smpsw = &sc->sc_smpsw_power; 1211 1212 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1213 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1214 return; 1215 } 1216 1217 break; 1218 1219 case ACPI_EVENT_SLEEP_BUTTON: 1220 smpsw = &sc->sc_smpsw_sleep; 1221 1222 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1223 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1224 return; 1225 } 1226 1227 break; 1228 1229 default: 1230 rv = AE_TYPE; 1231 goto fail; 1232 } 1233 1234 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1235 1236 if (ACPI_SUCCESS(rv)) { 1237 sysmon_pswitch_unregister(smpsw); 1238 return; 1239 } 1240 1241 fail: 1242 aprint_error_dev(sc->sc_dev, "failed to deregister " 1243 "fixed event: %s\n", AcpiFormatException(rv)); 1244 } 1245 1246 static uint32_t 1247 acpi_fixed_button_handler(void *context) 1248 { 1249 static const int handler = OSL_NOTIFY_HANDLER; 1250 struct sysmon_pswitch *smpsw = context; 1251 1252 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1253 1254 return ACPI_INTERRUPT_HANDLED; 1255 } 1256 1257 static void 1258 acpi_fixed_button_pressed(void *context) 1259 { 1260 struct sysmon_pswitch *smpsw = context; 1261 1262 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1263 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1264 "power" : "sleep")); 1265 1266 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1267 } 1268 1269 /* 1270 * Sleep. 1271 */ 1272 static void 1273 acpi_sleep_init(struct acpi_softc *sc) 1274 { 1275 uint8_t a, b, i; 1276 ACPI_STATUS rv; 1277 1278 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1279 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1280 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1281 1282 /* 1283 * Evaluate supported sleep states. 1284 */ 1285 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1286 1287 rv = AcpiGetSleepTypeData(i, &a, &b); 1288 1289 if (ACPI_SUCCESS(rv)) 1290 sc->sc_sleepstates |= __BIT(i); 1291 } 1292 } 1293 1294 /* 1295 * Must be called with interrupts enabled. 1296 */ 1297 void 1298 acpi_enter_sleep_state(int state) 1299 { 1300 struct acpi_softc *sc = acpi_softc; 1301 ACPI_STATUS rv; 1302 int err; 1303 1304 if (acpi_softc == NULL) 1305 return; 1306 1307 if (state == sc->sc_sleepstate) 1308 return; 1309 1310 if (state < ACPI_STATE_S0 || state > ACPI_STATE_S5) 1311 return; 1312 1313 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1314 1315 switch (state) { 1316 1317 case ACPI_STATE_S0: 1318 sc->sc_sleepstate = ACPI_STATE_S0; 1319 return; 1320 1321 case ACPI_STATE_S1: 1322 case ACPI_STATE_S2: 1323 case ACPI_STATE_S3: 1324 case ACPI_STATE_S4: 1325 1326 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1327 aprint_error_dev(sc->sc_dev, "sleep state " 1328 "S%d is not available\n", state); 1329 return; 1330 } 1331 1332 /* 1333 * Evaluate the _TTS method. This should be done before 1334 * pmf_system_suspend(9) and the evaluation of _PTS. 1335 * We should also re-evaluate this once we return to 1336 * S0 or if we abort the sleep state transition in the 1337 * middle (see ACPI 3.0, section 7.3.6). In reality, 1338 * however, the _TTS method is seldom seen in the field. 1339 */ 1340 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1341 1342 if (ACPI_SUCCESS(rv)) 1343 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1344 1345 if (state != ACPI_STATE_S1 && 1346 pmf_system_suspend(PMF_Q_NONE) != true) { 1347 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1348 break; 1349 } 1350 1351 /* 1352 * This will evaluate the _PTS and _SST methods, 1353 * but unlike the documentation claims, not _GTS, 1354 * which is evaluated in AcpiEnterSleepState(). 1355 * This must be called with interrupts enabled. 1356 */ 1357 rv = AcpiEnterSleepStatePrep(state); 1358 1359 if (ACPI_FAILURE(rv)) { 1360 aprint_error_dev(sc->sc_dev, "failed to prepare " 1361 "S%d: %s\n", state, AcpiFormatException(rv)); 1362 break; 1363 } 1364 1365 /* 1366 * After the _PTS method has been evaluated, we can 1367 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1368 */ 1369 acpi_wakedev_commit(sc, state); 1370 1371 sc->sc_sleepstate = state; 1372 1373 if (state == ACPI_STATE_S1) { 1374 1375 /* 1376 * Before the transition to S1, CPU caches 1377 * must be flushed (see ACPI 4.0, 7.3.4.2). 1378 * 1379 * Note that interrupts must be off before 1380 * calling AcpiEnterSleepState(). Conversely, 1381 * AcpiLeaveSleepState() should always be 1382 * called with interrupts enabled. 1383 */ 1384 acpi_md_OsDisableInterrupt(); 1385 1386 ACPI_FLUSH_CPU_CACHE(); 1387 rv = AcpiEnterSleepState(state); 1388 1389 if (ACPI_FAILURE(rv)) 1390 aprint_error_dev(sc->sc_dev, "failed to " 1391 "enter S1: %s\n", AcpiFormatException(rv)); 1392 1393 /* 1394 * Clear fixed events and disable all GPEs before 1395 * interrupts are enabled. 1396 */ 1397 AcpiClearEvent(ACPI_EVENT_PMTIMER); 1398 AcpiClearEvent(ACPI_EVENT_GLOBAL); 1399 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON); 1400 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON); 1401 AcpiClearEvent(ACPI_EVENT_RTC); 1402 AcpiHwDisableAllGpes(); 1403 1404 acpi_md_OsEnableInterrupt(); 1405 rv = AcpiLeaveSleepState(state); 1406 1407 } else { 1408 1409 err = acpi_md_sleep(state); 1410 1411 if (state == ACPI_STATE_S4) 1412 AcpiEnable(); 1413 1414 (void)pmf_system_bus_resume(PMF_Q_NONE); 1415 (void)AcpiLeaveSleepState(state); 1416 (void)AcpiSetFirmwareWakingVector(0); 1417 (void)pmf_system_resume(PMF_Q_NONE); 1418 } 1419 1420 /* 1421 * No wake GPEs should be enabled at runtime. 1422 */ 1423 acpi_wakedev_commit(sc, ACPI_STATE_S0); 1424 break; 1425 1426 case ACPI_STATE_S5: 1427 1428 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1429 1430 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1431 1432 if (ACPI_FAILURE(rv)) { 1433 aprint_error_dev(sc->sc_dev, "failed to prepare " 1434 "S%d: %s\n", state, AcpiFormatException(rv)); 1435 break; 1436 } 1437 1438 (void)AcpiDisableAllGpes(); 1439 1440 DELAY(1000000); 1441 1442 sc->sc_sleepstate = state; 1443 acpi_md_OsDisableInterrupt(); 1444 1445 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1446 1447 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1448 1449 break; 1450 } 1451 1452 sc->sc_sleepstate = ACPI_STATE_S0; 1453 1454 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1455 } 1456 1457 /* 1458 * Sysctl. 1459 */ 1460 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1461 { 1462 const struct sysctlnode *rnode, *snode; 1463 int err; 1464 1465 err = sysctl_createv(clog, 0, NULL, &rnode, 1466 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", 1467 NULL, NULL, 0, NULL, 0, 1468 CTL_HW, CTL_EOL); 1469 1470 if (err != 0) 1471 return; 1472 1473 err = sysctl_createv(clog, 0, &rnode, &rnode, 1474 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1475 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1476 NULL, 0, NULL, 0, 1477 CTL_CREATE, CTL_EOL); 1478 1479 if (err != 0) 1480 return; 1481 1482 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1483 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1484 "root", SYSCTL_DESCR("ACPI root pointer"), 1485 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1486 CTL_CREATE, CTL_EOL); 1487 1488 err = sysctl_createv(clog, 0, &rnode, &snode, 1489 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1490 "sleep", SYSCTL_DESCR("ACPI sleep"), 1491 NULL, 0, NULL, 0, 1492 CTL_CREATE, CTL_EOL); 1493 1494 if (err != 0) 1495 return; 1496 1497 (void)sysctl_createv(NULL, 0, &snode, NULL, 1498 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1499 "state", SYSCTL_DESCR("System sleep state"), 1500 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1501 CTL_CREATE, CTL_EOL); 1502 1503 (void)sysctl_createv(NULL, 0, &snode, NULL, 1504 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1505 "states", SYSCTL_DESCR("Supported sleep states"), 1506 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1507 CTL_CREATE, CTL_EOL); 1508 1509 err = sysctl_createv(clog, 0, &rnode, &rnode, 1510 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1511 "stat", SYSCTL_DESCR("ACPI statistics"), 1512 NULL, 0, NULL, 0, 1513 CTL_CREATE, CTL_EOL); 1514 1515 if (err != 0) 1516 return; 1517 1518 (void)sysctl_createv(clog, 0, &rnode, NULL, 1519 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1520 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1521 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1522 CTL_CREATE, CTL_EOL); 1523 1524 (void)sysctl_createv(clog, 0, &rnode, NULL, 1525 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1526 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1527 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1528 CTL_CREATE, CTL_EOL); 1529 1530 (void)sysctl_createv(clog, 0, &rnode, NULL, 1531 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1532 "fixed", SYSCTL_DESCR("Number of fixed events"), 1533 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1534 CTL_CREATE, CTL_EOL); 1535 1536 (void)sysctl_createv(clog, 0, &rnode, NULL, 1537 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1538 "method", SYSCTL_DESCR("Number of methods executed"), 1539 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1540 CTL_CREATE, CTL_EOL); 1541 1542 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1543 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1544 } 1545 1546 static int 1547 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1548 { 1549 struct sysctlnode node; 1550 uint64_t t; 1551 int err, i; 1552 1553 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1554 t += AcpiFixedEventCount[i]; 1555 1556 node = *rnode; 1557 node.sysctl_data = &t; 1558 1559 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1560 1561 if (err || newp == NULL) 1562 return err; 1563 1564 return 0; 1565 } 1566 1567 static int 1568 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1569 { 1570 struct acpi_softc *sc = acpi_softc; 1571 struct sysctlnode node; 1572 int err, t; 1573 1574 if (acpi_softc == NULL) 1575 return ENOSYS; 1576 1577 node = *rnode; 1578 t = sc->sc_sleepstate; 1579 node.sysctl_data = &t; 1580 1581 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1582 1583 if (err || newp == NULL) 1584 return err; 1585 1586 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1587 return EINVAL; 1588 1589 acpi_enter_sleep_state(t); 1590 1591 return 0; 1592 } 1593 1594 static int 1595 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1596 { 1597 struct acpi_softc *sc = acpi_softc; 1598 struct sysctlnode node; 1599 char t[3 * 6 + 1]; 1600 int err; 1601 1602 if (acpi_softc == NULL) 1603 return ENOSYS; 1604 1605 (void)memset(t, '\0', sizeof(t)); 1606 1607 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1608 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1609 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1610 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1611 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1612 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1613 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1614 1615 node = *rnode; 1616 node.sysctl_data = &t; 1617 1618 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1619 1620 if (err || newp == NULL) 1621 return err; 1622 1623 return 0; 1624 } 1625 1626 /* 1627 * Tables. 1628 */ 1629 ACPI_PHYSICAL_ADDRESS 1630 acpi_OsGetRootPointer(void) 1631 { 1632 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1633 1634 /* 1635 * We let MD code handle this since there are multiple ways to do it: 1636 * 1637 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1638 * 1639 * IA-64: Use the EFI. 1640 */ 1641 PhysicalAddress = acpi_md_OsGetRootPointer(); 1642 1643 if (acpi_root_pointer == 0) 1644 acpi_root_pointer = PhysicalAddress; 1645 1646 return PhysicalAddress; 1647 } 1648 1649 static ACPI_TABLE_HEADER * 1650 acpi_map_rsdt(void) 1651 { 1652 ACPI_PHYSICAL_ADDRESS paddr; 1653 ACPI_TABLE_RSDP *rsdp; 1654 1655 paddr = AcpiOsGetRootPointer(); 1656 1657 if (paddr == 0) 1658 return NULL; 1659 1660 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1661 1662 if (rsdp == NULL) 1663 return NULL; 1664 1665 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1666 paddr = rsdp->XsdtPhysicalAddress; 1667 else 1668 paddr = rsdp->RsdtPhysicalAddress; 1669 1670 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1671 1672 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1673 } 1674 1675 /* 1676 * XXX: Refactor to be a generic function that unmaps tables. 1677 */ 1678 static void 1679 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1680 { 1681 1682 if (rsdt == NULL) 1683 return; 1684 1685 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1686 } 1687 1688 /* 1689 * XXX: Refactor to be a generic function that maps tables. 1690 */ 1691 ACPI_STATUS 1692 acpi_madt_map(void) 1693 { 1694 ACPI_STATUS rv; 1695 1696 if (madt_header != NULL) 1697 return AE_ALREADY_EXISTS; 1698 1699 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); 1700 1701 if (ACPI_FAILURE(rv)) 1702 return rv; 1703 1704 return AE_OK; 1705 } 1706 1707 void 1708 acpi_madt_unmap(void) 1709 { 1710 madt_header = NULL; 1711 } 1712 1713 /* 1714 * XXX: Refactor to be a generic function that walks tables. 1715 */ 1716 void 1717 acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) 1718 { 1719 ACPI_SUBTABLE_HEADER *hdrp; 1720 char *madtend, *where; 1721 1722 madtend = (char *)madt_header + madt_header->Length; 1723 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); 1724 1725 while (where < madtend) { 1726 1727 hdrp = (ACPI_SUBTABLE_HEADER *)where; 1728 1729 if (ACPI_FAILURE(func(hdrp, aux))) 1730 break; 1731 1732 where += hdrp->Length; 1733 } 1734 } 1735 1736 /* 1737 * Miscellaneous. 1738 */ 1739 static bool 1740 acpi_is_scope(struct acpi_devnode *ad) 1741 { 1742 int i; 1743 1744 /* 1745 * Return true if the node is a root scope. 1746 */ 1747 if (ad->ad_parent == NULL) 1748 return false; 1749 1750 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1751 return false; 1752 1753 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1754 1755 if (acpi_scopes[i] == NULL) 1756 continue; 1757 1758 if (ad->ad_handle == acpi_scopes[i]) 1759 return true; 1760 } 1761 1762 return false; 1763 } 1764 1765 /* 1766 * ACPIVERBOSE. 1767 */ 1768 void 1769 acpi_load_verbose(void) 1770 { 1771 1772 if (acpi_verbose_loaded == 0) 1773 module_autoload("acpiverbose", MODULE_CLASS_MISC); 1774 } 1775 1776 void 1777 acpi_print_verbose_stub(struct acpi_softc *sc) 1778 { 1779 1780 acpi_load_verbose(); 1781 1782 if (acpi_verbose_loaded != 0) 1783 acpi_print_verbose(sc); 1784 } 1785 1786 void 1787 acpi_print_dev_stub(const char *pnpstr) 1788 { 1789 1790 acpi_load_verbose(); 1791 1792 if (acpi_verbose_loaded != 0) 1793 acpi_print_dev(pnpstr); 1794 } 1795 1796 MALLOC_DECLARE(M_ACPI); /* XXX: ACPI_ACTIVATE_DEV should use kmem(9). */ 1797 1798 /* 1799 * ACPI_ACTIVATE_DEV. 1800 */ 1801 static void 1802 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 1803 { 1804 1805 #ifndef ACPI_ACTIVATE_DEV 1806 return; 1807 } 1808 #else 1809 static const int valid = ACPI_VALID_STA | ACPI_VALID_HID; 1810 ACPI_DEVICE_INFO *newdi; 1811 ACPI_STATUS rv; 1812 uint32_t old; 1813 1814 /* 1815 * If the device is valid and present, 1816 * but not enabled, try to activate it. 1817 */ 1818 if (((*di)->Valid & valid) != valid) 1819 return; 1820 1821 old = (*di)->CurrentStatus; 1822 1823 if ((old & (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED)) != 1824 ACPI_STA_DEVICE_PRESENT) 1825 return; 1826 1827 rv = acpi_allocate_resources(handle); 1828 1829 if (ACPI_FAILURE(rv)) 1830 goto fail; 1831 1832 rv = AcpiGetObjectInfo(handle, &newdi); 1833 1834 if (ACPI_FAILURE(rv)) 1835 goto fail; 1836 1837 ACPI_FREE(*di); 1838 *di = newdi; 1839 1840 aprint_verbose_dev(acpi_softc->sc_dev, 1841 "%s activated, STA 0x%08X -> STA 0x%08X\n", 1842 (*di)->HardwareId.String, old, (*di)->CurrentStatus); 1843 1844 return; 1845 1846 fail: 1847 aprint_error_dev(acpi_softc->sc_dev, "failed to " 1848 "activate %s\n", (*di)->HardwareId.String); 1849 } 1850 1851 /* 1852 * XXX: This very incomplete. 1853 */ 1854 ACPI_STATUS 1855 acpi_allocate_resources(ACPI_HANDLE handle) 1856 { 1857 ACPI_BUFFER bufp, bufc, bufn; 1858 ACPI_RESOURCE *resp, *resc, *resn; 1859 ACPI_RESOURCE_IRQ *irq; 1860 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 1861 ACPI_STATUS rv; 1862 uint delta; 1863 1864 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 1865 if (ACPI_FAILURE(rv)) 1866 goto out; 1867 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 1868 if (ACPI_FAILURE(rv)) { 1869 goto out1; 1870 } 1871 1872 bufn.Length = 1000; 1873 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 1874 resp = bufp.Pointer; 1875 resc = bufc.Pointer; 1876 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 1877 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1878 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 1879 resp = ACPI_NEXT_RESOURCE(resp); 1880 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 1881 break; 1882 /* Found identical Id */ 1883 resn->Type = resc->Type; 1884 switch (resc->Type) { 1885 case ACPI_RESOURCE_TYPE_IRQ: 1886 memcpy(&resn->Data, &resp->Data, 1887 sizeof(ACPI_RESOURCE_IRQ)); 1888 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 1889 irq->Interrupts[0] = 1890 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 1891 Interrupts[irq->InterruptCount-1]; 1892 irq->InterruptCount = 1; 1893 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 1894 break; 1895 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 1896 memcpy(&resn->Data, &resp->Data, 1897 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 1898 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 1899 #if 0 1900 /* 1901 * XXX: Not duplicating the interrupt logic above 1902 * because its not clear what it accomplishes. 1903 */ 1904 xirq->Interrupts[0] = 1905 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 1906 Interrupts[irq->NumberOfInterrupts-1]; 1907 xirq->NumberOfInterrupts = 1; 1908 #endif 1909 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 1910 break; 1911 case ACPI_RESOURCE_TYPE_IO: 1912 memcpy(&resn->Data, &resp->Data, 1913 sizeof(ACPI_RESOURCE_IO)); 1914 resn->Length = resp->Length; 1915 break; 1916 default: 1917 aprint_error_dev(acpi_softc->sc_dev, 1918 "%s: invalid type %u\n", __func__, resc->Type); 1919 rv = AE_BAD_DATA; 1920 goto out2; 1921 } 1922 resc = ACPI_NEXT_RESOURCE(resc); 1923 resn = ACPI_NEXT_RESOURCE(resn); 1924 resp = ACPI_NEXT_RESOURCE(resp); 1925 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 1926 if (delta >= 1927 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 1928 bufn.Length *= 2; 1929 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 1930 M_ACPI, M_WAITOK); 1931 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 1932 delta); 1933 } 1934 } 1935 1936 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1937 aprint_error_dev(acpi_softc->sc_dev, 1938 "%s: resc not exhausted\n", __func__); 1939 rv = AE_BAD_DATA; 1940 goto out3; 1941 } 1942 1943 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 1944 rv = AcpiSetCurrentResources(handle, &bufn); 1945 1946 if (ACPI_FAILURE(rv)) 1947 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 1948 "resources: %s\n", __func__, AcpiFormatException(rv)); 1949 1950 out3: 1951 free(bufn.Pointer, M_ACPI); 1952 out2: 1953 ACPI_FREE(bufc.Pointer); 1954 out1: 1955 ACPI_FREE(bufp.Pointer); 1956 out: 1957 return rv; 1958 } 1959 1960 #endif /* ACPI_ACTIVATE_DEV */ 1961
Indexes created Wed Oct 01 19:09:53 GMT 2025