acpi.c revision 1.232
1 /* $NetBSD: acpi.c,v 1.232 2011/01/13 05:14:48 jruoho 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 1.232 2011/01/13 05:14:48 jruoho 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/malloc.h> 112 #include <sys/module.h> 113 #include <sys/mutex.h> 114 #include <sys/sysctl.h> 115 #include <sys/systm.h> 116 #include <sys/timetc.h> 117 118 #include <dev/acpi/acpireg.h> 119 #include <dev/acpi/acpivar.h> 120 #include <dev/acpi/acpi_osd.h> 121 #include <dev/acpi/acpi_pci.h> 122 #include <dev/acpi/acpi_power.h> 123 #include <dev/acpi/acpi_timer.h> 124 #include <dev/acpi/acpi_wakedev.h> 125 126 #define _COMPONENT ACPI_BUS_COMPONENT 127 ACPI_MODULE_NAME ("acpi") 128 129 #if defined(ACPI_PCI_FIXUP) 130 #error The option ACPI_PCI_FIXUP has been obsoleted by PCI_INTR_FIXUP_DISABLED. Please adjust your kernel configuration file. 131 #endif 132 133 #ifdef PCI_INTR_FIXUP_DISABLED 134 #include <dev/pci/pcidevs.h> 135 #endif 136 137 MALLOC_DECLARE(M_ACPI); 138 139 #include <machine/acpi_machdep.h> 140 141 #ifdef ACPI_DEBUGGER 142 #define ACPI_DBGR_INIT 0x01 143 #define ACPI_DBGR_TABLES 0x02 144 #define ACPI_DBGR_ENABLE 0x04 145 #define ACPI_DBGR_PROBE 0x08 146 #define ACPI_DBGR_RUNNING 0x10 147 148 static int acpi_dbgr = 0x00; 149 #endif 150 151 /* 152 * The acpi_active variable is set when the ACPI subsystem is active. 153 * Machine-dependent code may wish to skip other steps (such as attaching 154 * subsystems that ACPI supercedes) when ACPI is active. 155 */ 156 uint32_t acpi_cpus = 0; 157 int acpi_active = 0; 158 int acpi_suspended = 0; 159 int acpi_force_load = 0; 160 int acpi_verbose_loaded = 0; 161 162 struct acpi_softc *acpi_softc; 163 static uint64_t acpi_root_pointer; 164 extern kmutex_t acpi_interrupt_list_mtx; 165 extern struct cfdriver acpi_cd; 166 static ACPI_HANDLE acpi_scopes[4]; 167 ACPI_TABLE_HEADER *madt_header; 168 169 /* 170 * This structure provides a context for the ACPI 171 * namespace walk performed in acpi_build_tree(). 172 */ 173 struct acpi_walkcontext { 174 struct acpi_softc *aw_sc; 175 struct acpi_devnode *aw_parent; 176 }; 177 178 /* 179 * Ignored HIDs. 180 */ 181 static const char * const acpi_ignored_ids[] = { 182 #if defined(i386) || defined(x86_64) 183 "PNP0000", /* AT interrupt controller is handled internally */ 184 "PNP0200", /* AT DMA controller is handled internally */ 185 "PNP0A??", /* PCI Busses are handled internally */ 186 "PNP0B00", /* AT RTC is handled internally */ 187 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 188 #endif 189 #if defined(x86_64) 190 "PNP0C04", /* FPU is handled internally */ 191 #endif 192 NULL 193 }; 194 195 /* 196 * Devices that should be attached early. 197 */ 198 static const char * const acpi_early_ids[] = { 199 "PNP0C09", /* acpiec(4) */ 200 NULL 201 }; 202 203 static int acpi_match(device_t, cfdata_t, void *); 204 static int acpi_submatch(device_t, cfdata_t, const int *, void *); 205 static void acpi_attach(device_t, device_t, void *); 206 static int acpi_detach(device_t, int); 207 static void acpi_childdet(device_t, device_t); 208 static bool acpi_suspend(device_t, const pmf_qual_t *); 209 static bool acpi_resume(device_t, const pmf_qual_t *); 210 211 static void acpi_build_tree(struct acpi_softc *); 212 static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, 213 void *, void **); 214 static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t, 215 void *, void **); 216 static void acpi_make_name(struct acpi_devnode *, uint32_t); 217 218 static int acpi_rescan(device_t, const char *, const int *); 219 static void acpi_rescan_early(struct acpi_softc *); 220 static void acpi_rescan_nodes(struct acpi_softc *); 221 static void acpi_rescan_capabilities(device_t); 222 static int acpi_print(void *aux, const char *); 223 224 static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); 225 226 static void acpi_register_fixed_button(struct acpi_softc *, int); 227 static void acpi_deregister_fixed_button(struct acpi_softc *, int); 228 static uint32_t acpi_fixed_button_handler(void *); 229 static void acpi_fixed_button_pressed(void *); 230 231 static void acpi_sleep_init(struct acpi_softc *); 232 233 static int sysctl_hw_acpi_fixedstats(SYSCTLFN_PROTO); 234 static int sysctl_hw_acpi_sleepstate(SYSCTLFN_PROTO); 235 static int sysctl_hw_acpi_sleepstates(SYSCTLFN_PROTO); 236 237 static bool acpi_is_scope(struct acpi_devnode *); 238 static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 239 static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 240 241 void acpi_print_verbose_stub(struct acpi_softc *); 242 void acpi_print_dev_stub(const char *); 243 244 static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **); 245 ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE); 246 247 void (*acpi_print_verbose)(struct acpi_softc *) = acpi_print_verbose_stub; 248 void (*acpi_print_dev)(const char *) = acpi_print_dev_stub; 249 250 CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 251 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 252 253 /* 254 * Probe for ACPI support. 255 * 256 * This is called by the machine-dependent ACPI front-end. 257 * Note: this is not an autoconfiguration interface function. 258 */ 259 int 260 acpi_probe(void) 261 { 262 ACPI_TABLE_HEADER *rsdt; 263 const char *func; 264 static int once; 265 bool initialized; 266 ACPI_STATUS rv; 267 268 if (once != 0) 269 panic("%s: already probed", __func__); 270 271 once = 1; 272 func = NULL; 273 acpi_softc = NULL; 274 initialized = false; 275 276 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 277 278 /* 279 * Start up ACPICA. 280 */ 281 #ifdef ACPI_DEBUGGER 282 if (acpi_dbgr & ACPI_DBGR_INIT) 283 acpi_osd_debugger(); 284 #endif 285 286 CTASSERT(TRUE == true); 287 CTASSERT(FALSE == false); 288 289 AcpiGbl_AllMethodsSerialized = false; 290 AcpiGbl_EnableInterpreterSlack = true; 291 292 rv = AcpiInitializeSubsystem(); 293 294 if (ACPI_SUCCESS(rv)) 295 initialized = true; 296 else { 297 func = "AcpiInitializeSubsystem()"; 298 goto fail; 299 } 300 301 /* 302 * Allocate space for RSDT/XSDT and DSDT, 303 * but allow resizing if more tables exist. 304 */ 305 rv = AcpiInitializeTables(NULL, 2, true); 306 307 if (ACPI_FAILURE(rv)) { 308 func = "AcpiInitializeTables()"; 309 goto fail; 310 } 311 312 #ifdef ACPI_DEBUGGER 313 if (acpi_dbgr & ACPI_DBGR_TABLES) 314 acpi_osd_debugger(); 315 #endif 316 317 rv = AcpiLoadTables(); 318 319 if (ACPI_FAILURE(rv)) { 320 func = "AcpiLoadTables()"; 321 goto fail; 322 } 323 324 rsdt = acpi_map_rsdt(); 325 326 if (rsdt == NULL) { 327 func = "acpi_map_rsdt()"; 328 rv = AE_ERROR; 329 goto fail; 330 } 331 332 if (acpi_force_load == 0 && (acpi_find_quirks() & ACPI_QUIRK_BROKEN)) { 333 aprint_normal("ACPI: BIOS is listed as broken:\n"); 334 aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 335 "AslId <%4.4s,%08x>\n", 336 rsdt->OemId, rsdt->OemTableId, 337 rsdt->OemRevision, 338 rsdt->AslCompilerId, 339 rsdt->AslCompilerRevision); 340 aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n"); 341 acpi_unmap_rsdt(rsdt); 342 AcpiTerminate(); 343 return 0; 344 } 345 if (acpi_force_load == 0 && (acpi_find_quirks() & ACPI_QUIRK_OLDBIOS)) { 346 aprint_normal("ACPI: BIOS is too old (%s). Set acpi_force_load to use.\n", 347 pmf_get_platform("firmware-date")); 348 acpi_unmap_rsdt(rsdt); 349 AcpiTerminate(); 350 return 0; 351 } 352 353 acpi_unmap_rsdt(rsdt); 354 355 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 356 357 if (ACPI_FAILURE(rv)) { 358 func = "AcpiEnableSubsystem()"; 359 goto fail; 360 } 361 362 /* 363 * Looks like we have ACPI! 364 */ 365 return 1; 366 367 fail: 368 KASSERT(rv != AE_OK); 369 KASSERT(func != NULL); 370 371 aprint_error("%s: failed to probe ACPI: %s\n", 372 func, AcpiFormatException(rv)); 373 374 if (initialized != false) 375 (void)AcpiTerminate(); 376 377 return 0; 378 } 379 380 void 381 acpi_disable(void) 382 { 383 384 if (acpi_softc == NULL) 385 return; 386 387 KASSERT(acpi_active != 0); 388 389 if (AcpiGbl_FADT.SmiCommand != 0) 390 AcpiDisable(); 391 } 392 393 int 394 acpi_check(device_t parent, const char *ifattr) 395 { 396 return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); 397 } 398 399 /* 400 * Autoconfiguration. 401 */ 402 static int 403 acpi_match(device_t parent, cfdata_t match, void *aux) 404 { 405 /* 406 * XXX: Nada; MD code has called acpi_probe(). 407 */ 408 return 1; 409 } 410 411 static int 412 acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 413 { 414 struct cfattach *ca; 415 416 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 417 418 return (ca == &acpi_ca); 419 } 420 421 static void 422 acpi_attach(device_t parent, device_t self, void *aux) 423 { 424 struct acpi_softc *sc = device_private(self); 425 struct acpibus_attach_args *aa = aux; 426 ACPI_TABLE_HEADER *rsdt; 427 ACPI_STATUS rv; 428 429 aprint_naive("\n"); 430 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 431 432 if (acpi_softc != NULL) 433 panic("%s: already attached", __func__); 434 435 rsdt = acpi_map_rsdt(); 436 437 if (rsdt == NULL) 438 aprint_error_dev(self, "X/RSDT: Not found\n"); 439 else { 440 aprint_verbose_dev(self, 441 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 442 rsdt->OemId, rsdt->OemTableId, 443 rsdt->OemRevision, 444 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 445 } 446 447 acpi_unmap_rsdt(rsdt); 448 449 sc->sc_dev = self; 450 sc->sc_root = NULL; 451 452 sc->sc_sleepstate = ACPI_STATE_S0; 453 sc->sc_quirks = acpi_find_quirks(); 454 455 sysmon_power_settype("acpi"); 456 457 sc->sc_iot = aa->aa_iot; 458 sc->sc_memt = aa->aa_memt; 459 sc->sc_pc = aa->aa_pc; 460 sc->sc_pciflags = aa->aa_pciflags; 461 sc->sc_ic = aa->aa_ic; 462 463 SIMPLEQ_INIT(&sc->ad_head); 464 465 acpi_softc = sc; 466 467 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) 468 aprint_error_dev(self, "couldn't establish power handler\n"); 469 470 /* 471 * Bring ACPI on-line. 472 */ 473 #ifdef ACPI_DEBUGGER 474 if (acpi_dbgr & ACPI_DBGR_ENABLE) 475 acpi_osd_debugger(); 476 #endif 477 478 #define ACPI_ENABLE_PHASE1 \ 479 (ACPI_NO_HANDLER_INIT | ACPI_NO_EVENT_INIT) 480 #define ACPI_ENABLE_PHASE2 \ 481 (ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE | \ 482 ACPI_NO_ADDRESS_SPACE_INIT) 483 484 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE1); 485 486 if (ACPI_FAILURE(rv)) 487 goto fail; 488 489 acpi_md_callback(); 490 491 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE2); 492 493 if (ACPI_FAILURE(rv)) 494 goto fail; 495 496 /* 497 * Early EC handler initialization if ECDT table is available. 498 */ 499 config_found_ia(self, "acpiecdtbus", aa, NULL); 500 501 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 502 503 if (ACPI_FAILURE(rv)) 504 goto fail; 505 506 /* 507 * Install global notify handlers. 508 */ 509 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 510 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 511 512 if (ACPI_FAILURE(rv)) 513 goto fail; 514 515 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 516 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 517 518 if (ACPI_FAILURE(rv)) 519 goto fail; 520 521 acpi_active = 1; 522 523 /* Show SCI interrupt. */ 524 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 525 AcpiGbl_FADT.SciInterrupt); 526 527 /* 528 * Install fixed-event handlers. 529 */ 530 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 531 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 532 533 acpitimer_init(sc); 534 535 #ifdef ACPI_DEBUGGER 536 if (acpi_dbgr & ACPI_DBGR_PROBE) 537 acpi_osd_debugger(); 538 #endif 539 540 /* 541 * Scan the namespace and build our device tree. 542 */ 543 acpi_build_tree(sc); 544 acpi_sleep_init(sc); 545 546 #ifdef ACPI_DEBUGGER 547 if (acpi_dbgr & ACPI_DBGR_RUNNING) 548 acpi_osd_debugger(); 549 #endif 550 551 #ifdef ACPI_DEBUG 552 acpi_debug_init(); 553 #endif 554 555 /* 556 * Print debug information. 557 */ 558 acpi_print_verbose(sc); 559 560 return; 561 562 fail: 563 aprint_error("%s: failed to initialize ACPI: %s\n", 564 __func__, AcpiFormatException(rv)); 565 } 566 567 /* 568 * XXX: This is incomplete. 569 */ 570 static int 571 acpi_detach(device_t self, int flags) 572 { 573 struct acpi_softc *sc = device_private(self); 574 ACPI_STATUS rv; 575 int rc; 576 577 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 578 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 579 580 if (ACPI_FAILURE(rv)) 581 return EBUSY; 582 583 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 584 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 585 586 if (ACPI_FAILURE(rv)) 587 return EBUSY; 588 589 if ((rc = config_detach_children(self, flags)) != 0) 590 return rc; 591 592 if ((rc = acpitimer_detach()) != 0) 593 return rc; 594 595 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 596 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 597 598 pmf_device_deregister(self); 599 600 acpi_softc = NULL; 601 602 return 0; 603 } 604 605 /* 606 * XXX: Need to reclaim any resources? Yes. 607 */ 608 static void 609 acpi_childdet(device_t self, device_t child) 610 { 611 struct acpi_softc *sc = device_private(self); 612 struct acpi_devnode *ad; 613 614 if (sc->sc_apmbus == child) 615 sc->sc_apmbus = NULL; 616 617 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 618 619 if (ad->ad_device == child) 620 ad->ad_device = NULL; 621 } 622 } 623 624 static bool 625 acpi_suspend(device_t dv, const pmf_qual_t *qual) 626 { 627 628 acpi_suspended = 1; 629 630 return true; 631 } 632 633 static bool 634 acpi_resume(device_t dv, const pmf_qual_t *qual) 635 { 636 637 acpi_suspended = 0; 638 639 return true; 640 } 641 642 /* 643 * Namespace scan. 644 */ 645 static void 646 acpi_build_tree(struct acpi_softc *sc) 647 { 648 struct acpi_walkcontext awc; 649 650 /* 651 * Get the root scope handles. 652 */ 653 KASSERT(__arraycount(acpi_scopes) == 4); 654 655 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 656 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 657 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 658 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 659 660 /* 661 * Make the root node. 662 */ 663 awc.aw_sc = sc; 664 awc.aw_parent = NULL; 665 666 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 667 668 KASSERT(sc->sc_root == NULL); 669 KASSERT(awc.aw_parent != NULL); 670 671 sc->sc_root = awc.aw_parent; 672 673 /* 674 * Build the internal namespace. 675 */ 676 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 677 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 678 679 /* 680 * Scan the internal namespace. 681 */ 682 (void)acpi_pcidev_scan(sc->sc_root); 683 (void)acpi_rescan(sc->sc_dev, NULL, NULL); 684 685 /* 686 * Defer rest of the configuration. 687 */ 688 (void)config_defer(sc->sc_dev, acpi_rescan_capabilities); 689 } 690 691 static ACPI_STATUS 692 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 693 void *context, void **status) 694 { 695 struct acpi_walkcontext *awc = context; 696 struct acpi_softc *sc = awc->aw_sc; 697 struct acpi_devnode *ad; 698 ACPI_DEVICE_INFO *devinfo; 699 ACPI_OBJECT_TYPE type; 700 ACPI_STATUS rv; 701 702 rv = AcpiGetObjectInfo(handle, &devinfo); 703 704 if (ACPI_FAILURE(rv)) 705 return AE_OK; /* Do not terminate the walk. */ 706 707 type = devinfo->Type; 708 709 switch (type) { 710 711 case ACPI_TYPE_DEVICE: 712 acpi_activate_device(handle, &devinfo); 713 case ACPI_TYPE_PROCESSOR: 714 case ACPI_TYPE_THERMAL: 715 case ACPI_TYPE_POWER: 716 717 ad = malloc(sizeof(*ad), M_ACPI, M_NOWAIT | M_ZERO); 718 719 if (ad == NULL) 720 return AE_NO_MEMORY; 721 722 ad->ad_device = NULL; 723 ad->ad_notify = NULL; 724 ad->ad_pciinfo = NULL; 725 726 ad->ad_type = type; 727 ad->ad_handle = handle; 728 ad->ad_devinfo = devinfo; 729 730 ad->ad_root = sc->sc_dev; 731 ad->ad_parent = awc->aw_parent; 732 733 acpi_set_node(ad); 734 acpi_make_name(ad, devinfo->Name); 735 736 SIMPLEQ_INIT(&ad->ad_child_head); 737 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 738 739 if (ad->ad_parent != NULL) { 740 741 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 742 ad, ad_child_list); 743 } 744 745 awc->aw_parent = ad; 746 } 747 748 return AE_OK; 749 } 750 751 static ACPI_STATUS 752 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 753 void *context, void **status) 754 { 755 struct acpi_walkcontext *awc = context; 756 757 KASSERT(awc != NULL); 758 KASSERT(awc->aw_parent != NULL); 759 760 if (handle == awc->aw_parent->ad_handle) 761 awc->aw_parent = awc->aw_parent->ad_parent; 762 763 return AE_OK; 764 } 765 766 static void 767 acpi_make_name(struct acpi_devnode *ad, uint32_t name) 768 { 769 ACPI_NAME_UNION *anu; 770 int clear, i; 771 772 anu = (ACPI_NAME_UNION *)&name; 773 ad->ad_name[4] = '\0'; 774 775 for (i = 3, clear = 0; i >= 0; i--) { 776 777 if (clear == 0 && anu->Ascii[i] == '_') 778 ad->ad_name[i] = '\0'; 779 else { 780 ad->ad_name[i] = anu->Ascii[i]; 781 clear = 1; 782 } 783 } 784 785 if (ad->ad_name[0] == '\0') 786 ad->ad_name[0] = '_'; 787 } 788 789 /* 790 * Device attachment. 791 */ 792 static int 793 acpi_rescan(device_t self, const char *ifattr, const int *locators) 794 { 795 struct acpi_softc *sc = device_private(self); 796 797 /* 798 * A two-pass scan for acpinodebus. 799 */ 800 if (ifattr_match(ifattr, "acpinodebus")) { 801 acpi_rescan_early(sc); 802 acpi_rescan_nodes(sc); 803 } 804 805 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) 806 sc->sc_apmbus = config_found_ia(sc->sc_dev, 807 "acpiapmbus", NULL, NULL); 808 809 return 0; 810 } 811 812 static void 813 acpi_rescan_early(struct acpi_softc *sc) 814 { 815 struct acpi_attach_args aa; 816 struct acpi_devnode *ad; 817 818 /* 819 * First scan for devices such as acpiec(4) that 820 * should be always attached before anything else. 821 * We want these devices to attach regardless of 822 * the device status and other restrictions. 823 */ 824 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 825 826 if (ad->ad_device != NULL) 827 continue; 828 829 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 830 continue; 831 832 if (acpi_match_hid(ad->ad_devinfo, acpi_early_ids) == 0) 833 continue; 834 835 aa.aa_node = ad; 836 aa.aa_iot = sc->sc_iot; 837 aa.aa_memt = sc->sc_memt; 838 aa.aa_pc = sc->sc_pc; 839 aa.aa_pciflags = sc->sc_pciflags; 840 aa.aa_ic = sc->sc_ic; 841 842 ad->ad_device = config_found_ia(sc->sc_dev, 843 "acpinodebus", &aa, acpi_print); 844 } 845 } 846 847 static void 848 acpi_rescan_nodes(struct acpi_softc *sc) 849 { 850 const uint32_t ncpus = acpi_md_ncpus(); 851 struct acpi_attach_args aa; 852 struct acpi_devnode *ad; 853 ACPI_DEVICE_INFO *di; 854 855 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 856 857 if (ad->ad_device != NULL) 858 continue; 859 860 /* 861 * There is a bug in ACPICA: it defines the type 862 * of the scopes incorrectly for its own reasons. 863 */ 864 if (acpi_is_scope(ad) != false) 865 continue; 866 867 di = ad->ad_devinfo; 868 869 /* 870 * We only attach devices which are present, enabled, and 871 * functioning properly. However, if a device is enabled, 872 * it is decoding resources and we should claim these, 873 * if possible. This requires changes to bus_space(9). 874 * Note: there is a possible race condition, because _STA 875 * may have changed since di->CurrentStatus was set. 876 */ 877 if (di->Type == ACPI_TYPE_DEVICE) { 878 879 if ((di->Valid & ACPI_VALID_STA) != 0 && 880 (di->CurrentStatus & ACPI_STA_OK) != ACPI_STA_OK) 881 continue; 882 } 883 884 if (di->Type == ACPI_TYPE_POWER) 885 continue; 886 887 if (di->Type == ACPI_TYPE_PROCESSOR && acpi_cpus >= ncpus) 888 continue; 889 890 if (acpi_match_hid(di, acpi_early_ids) != 0) 891 continue; 892 893 if (acpi_match_hid(di, acpi_ignored_ids) != 0) 894 continue; 895 896 aa.aa_node = ad; 897 aa.aa_iot = sc->sc_iot; 898 aa.aa_memt = sc->sc_memt; 899 aa.aa_pc = sc->sc_pc; 900 aa.aa_pciflags = sc->sc_pciflags; 901 aa.aa_ic = sc->sc_ic; 902 903 ad->ad_device = config_found_ia(sc->sc_dev, 904 "acpinodebus", &aa, acpi_print); 905 } 906 } 907 908 static void 909 acpi_rescan_capabilities(device_t self) 910 { 911 struct acpi_softc *sc = device_private(self); 912 struct acpi_devnode *ad; 913 ACPI_HANDLE tmp; 914 ACPI_STATUS rv; 915 916 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 917 918 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 919 continue; 920 921 /* 922 * Scan power resource capabilities. 923 * 924 * If any power states are supported, 925 * at least _PR0 and _PR3 must be present. 926 */ 927 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 928 929 if (ACPI_SUCCESS(rv)) { 930 ad->ad_flags |= ACPI_DEVICE_POWER; 931 acpi_power_add(ad); 932 } 933 934 /* 935 * Scan wake-up capabilities. 936 */ 937 rv = AcpiGetHandle(ad->ad_handle, "_PRW", &tmp); 938 939 if (ACPI_SUCCESS(rv)) { 940 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 941 acpi_wakedev_add(ad); 942 } 943 944 /* 945 * Scan docking stations. 946 */ 947 rv = AcpiGetHandle(ad->ad_handle, "_DCK", &tmp); 948 949 if (ACPI_SUCCESS(rv)) 950 ad->ad_flags |= ACPI_DEVICE_DOCK; 951 952 /* 953 * Scan devices that are ejectable. 954 */ 955 rv = AcpiGetHandle(ad->ad_handle, "_EJ0", &tmp); 956 957 if (ACPI_SUCCESS(rv)) 958 ad->ad_flags |= ACPI_DEVICE_EJECT; 959 } 960 } 961 962 static int 963 acpi_print(void *aux, const char *pnp) 964 { 965 struct acpi_attach_args *aa = aux; 966 ACPI_STATUS rv; 967 968 if (pnp) { 969 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 970 char *pnpstr = 971 aa->aa_node->ad_devinfo->HardwareId.String; 972 ACPI_BUFFER buf; 973 974 aprint_normal("%s (%s) ", aa->aa_node->ad_name, 975 pnpstr); 976 977 rv = acpi_eval_struct(aa->aa_node->ad_handle, 978 "_STR", &buf); 979 if (ACPI_SUCCESS(rv)) { 980 ACPI_OBJECT *obj = buf.Pointer; 981 switch (obj->Type) { 982 case ACPI_TYPE_STRING: 983 aprint_normal("[%s] ", obj->String.Pointer); 984 break; 985 case ACPI_TYPE_BUFFER: 986 aprint_normal("buffer %p ", obj->Buffer.Pointer); 987 break; 988 default: 989 aprint_normal("type %u ",obj->Type); 990 break; 991 } 992 ACPI_FREE(buf.Pointer); 993 } 994 else 995 acpi_print_dev(pnpstr); 996 997 aprint_normal("at %s", pnp); 998 } else if (aa->aa_node->ad_devinfo->Type != ACPI_TYPE_DEVICE) { 999 aprint_normal("%s (ACPI Object Type '%s' " 1000 "[0x%02x]) ", aa->aa_node->ad_name, 1001 AcpiUtGetTypeName(aa->aa_node->ad_devinfo->Type), 1002 aa->aa_node->ad_devinfo->Type); 1003 aprint_normal("at %s", pnp); 1004 } else 1005 return 0; 1006 } else { 1007 aprint_normal(" (%s", aa->aa_node->ad_name); 1008 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1009 aprint_normal(", %s", aa->aa_node->ad_devinfo->HardwareId.String); 1010 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_UID) { 1011 const char *uid; 1012 1013 uid = aa->aa_node->ad_devinfo->UniqueId.String; 1014 if (uid[0] == '\0') 1015 uid = "<null>"; 1016 aprint_normal("-%s", uid); 1017 } 1018 } 1019 aprint_normal(")"); 1020 } 1021 1022 return UNCONF; 1023 } 1024 1025 /* 1026 * Notify. 1027 */ 1028 static void 1029 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1030 { 1031 struct acpi_softc *sc = acpi_softc; 1032 struct acpi_devnode *ad; 1033 1034 KASSERT(sc != NULL); 1035 KASSERT(aux == NULL); 1036 KASSERT(acpi_active != 0); 1037 1038 if (acpi_suspended != 0) 1039 return; 1040 1041 /* 1042 * System: 0x00 - 0x7F. 1043 * Device: 0x80 - 0xFF. 1044 */ 1045 switch (event) { 1046 1047 case ACPI_NOTIFY_BUS_CHECK: 1048 case ACPI_NOTIFY_DEVICE_CHECK: 1049 case ACPI_NOTIFY_DEVICE_WAKE: 1050 case ACPI_NOTIFY_EJECT_REQUEST: 1051 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1052 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1053 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1054 case ACPI_NOTIFY_POWER_FAULT: 1055 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1056 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1057 case ACPI_NOTIFY_RESERVED: 1058 case ACPI_NOTIFY_LOCALITY_UPDATE: 1059 break; 1060 } 1061 1062 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1063 "%s (%p)\n", event, acpi_name(handle), handle)); 1064 1065 /* 1066 * We deliver notifications only to drivers 1067 * that have been succesfully attached and 1068 * that have registered a handler with us. 1069 * The opaque pointer is always the device_t. 1070 */ 1071 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1072 1073 if (ad->ad_device == NULL) 1074 continue; 1075 1076 if (ad->ad_notify == NULL) 1077 continue; 1078 1079 if (ad->ad_handle != handle) 1080 continue; 1081 1082 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1083 1084 return; 1085 } 1086 1087 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1088 "for %s (%p)\n", event, acpi_name(handle), handle); 1089 } 1090 1091 bool 1092 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1093 { 1094 struct acpi_softc *sc = acpi_softc; 1095 1096 KASSERT(sc != NULL); 1097 KASSERT(acpi_active != 0); 1098 1099 if (acpi_suspended != 0) 1100 goto fail; 1101 1102 if (ad == NULL || notify == NULL) 1103 goto fail; 1104 1105 ad->ad_notify = notify; 1106 1107 return true; 1108 1109 fail: 1110 aprint_error_dev(sc->sc_dev, "failed to register notify " 1111 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1112 1113 return false; 1114 } 1115 1116 void 1117 acpi_deregister_notify(struct acpi_devnode *ad) 1118 { 1119 1120 ad->ad_notify = NULL; 1121 } 1122 1123 /* 1124 * Fixed buttons. 1125 */ 1126 static void 1127 acpi_register_fixed_button(struct acpi_softc *sc, int event) 1128 { 1129 struct sysmon_pswitch *smpsw; 1130 ACPI_STATUS rv; 1131 int type; 1132 1133 switch (event) { 1134 1135 case ACPI_EVENT_POWER_BUTTON: 1136 1137 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1138 return; 1139 1140 type = PSWITCH_TYPE_POWER; 1141 smpsw = &sc->sc_smpsw_power; 1142 break; 1143 1144 case ACPI_EVENT_SLEEP_BUTTON: 1145 1146 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1147 return; 1148 1149 type = PSWITCH_TYPE_SLEEP; 1150 smpsw = &sc->sc_smpsw_sleep; 1151 break; 1152 1153 default: 1154 rv = AE_TYPE; 1155 goto fail; 1156 } 1157 1158 smpsw->smpsw_type = type; 1159 smpsw->smpsw_name = device_xname(sc->sc_dev); 1160 1161 if (sysmon_pswitch_register(smpsw) != 0) { 1162 rv = AE_ERROR; 1163 goto fail; 1164 } 1165 1166 rv = AcpiInstallFixedEventHandler(event, 1167 acpi_fixed_button_handler, smpsw); 1168 1169 if (ACPI_FAILURE(rv)) { 1170 sysmon_pswitch_unregister(smpsw); 1171 goto fail; 1172 } 1173 1174 aprint_debug_dev(sc->sc_dev, "fixed %s button present\n", 1175 (type != ACPI_EVENT_SLEEP_BUTTON) ? "power" : "sleep"); 1176 1177 return; 1178 1179 fail: 1180 aprint_error_dev(sc->sc_dev, "failed to register " 1181 "fixed event: %s\n", AcpiFormatException(rv)); 1182 } 1183 1184 static void 1185 acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1186 { 1187 struct sysmon_pswitch *smpsw; 1188 ACPI_STATUS rv; 1189 1190 switch (event) { 1191 1192 case ACPI_EVENT_POWER_BUTTON: 1193 smpsw = &sc->sc_smpsw_power; 1194 1195 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1196 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1197 return; 1198 } 1199 1200 break; 1201 1202 case ACPI_EVENT_SLEEP_BUTTON: 1203 smpsw = &sc->sc_smpsw_sleep; 1204 1205 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1206 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1207 return; 1208 } 1209 1210 break; 1211 1212 default: 1213 rv = AE_TYPE; 1214 goto fail; 1215 } 1216 1217 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1218 1219 if (ACPI_SUCCESS(rv)) { 1220 sysmon_pswitch_unregister(smpsw); 1221 return; 1222 } 1223 1224 fail: 1225 aprint_error_dev(sc->sc_dev, "failed to deregister " 1226 "fixed event: %s\n", AcpiFormatException(rv)); 1227 } 1228 1229 static uint32_t 1230 acpi_fixed_button_handler(void *context) 1231 { 1232 static const int handler = OSL_NOTIFY_HANDLER; 1233 struct sysmon_pswitch *smpsw = context; 1234 1235 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1236 1237 return ACPI_INTERRUPT_HANDLED; 1238 } 1239 1240 static void 1241 acpi_fixed_button_pressed(void *context) 1242 { 1243 struct sysmon_pswitch *smpsw = context; 1244 1245 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1246 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1247 "power" : "sleep")); 1248 1249 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1250 } 1251 1252 /* 1253 * Sleep. 1254 */ 1255 static void 1256 acpi_sleep_init(struct acpi_softc *sc) 1257 { 1258 uint8_t a, b, i; 1259 ACPI_STATUS rv; 1260 1261 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1262 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1263 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1264 1265 /* 1266 * Evaluate supported sleep states. 1267 */ 1268 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1269 1270 rv = AcpiGetSleepTypeData(i, &a, &b); 1271 1272 if (ACPI_SUCCESS(rv)) 1273 sc->sc_sleepstates |= __BIT(i); 1274 } 1275 } 1276 1277 /* 1278 * Must be called with interrupts enabled. 1279 */ 1280 void 1281 acpi_enter_sleep_state(int state) 1282 { 1283 struct acpi_softc *sc = acpi_softc; 1284 ACPI_STATUS rv; 1285 int err; 1286 1287 if (acpi_softc == NULL) 1288 return; 1289 1290 if (state == sc->sc_sleepstate) 1291 return; 1292 1293 if (state < ACPI_STATE_S0 || state > ACPI_STATE_S5) 1294 return; 1295 1296 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1297 1298 switch (state) { 1299 1300 case ACPI_STATE_S0: 1301 sc->sc_sleepstate = ACPI_STATE_S0; 1302 return; 1303 1304 case ACPI_STATE_S1: 1305 case ACPI_STATE_S2: 1306 case ACPI_STATE_S3: 1307 case ACPI_STATE_S4: 1308 1309 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1310 aprint_error_dev(sc->sc_dev, "sleep state " 1311 "S%d is not available\n", state); 1312 return; 1313 } 1314 1315 /* 1316 * Evaluate the _TTS method. This should be done before 1317 * pmf_system_suspend(9) and the evaluation of _PTS. 1318 * We should also re-evaluate this once we return to 1319 * S0 or if we abort the sleep state transition in the 1320 * middle (see ACPI 3.0, section 7.3.6). In reality, 1321 * however, the _TTS method is seldom seen in the field. 1322 */ 1323 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1324 1325 if (ACPI_SUCCESS(rv)) 1326 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1327 1328 if (state != ACPI_STATE_S1 && 1329 pmf_system_suspend(PMF_Q_NONE) != true) { 1330 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1331 break; 1332 } 1333 1334 /* 1335 * This will evaluate the _PTS and _SST methods, 1336 * but unlike the documentation claims, not _GTS, 1337 * which is evaluated in AcpiEnterSleepState(). 1338 * This must be called with interrupts enabled. 1339 */ 1340 rv = AcpiEnterSleepStatePrep(state); 1341 1342 if (ACPI_FAILURE(rv)) { 1343 aprint_error_dev(sc->sc_dev, "failed to prepare " 1344 "S%d: %s\n", state, AcpiFormatException(rv)); 1345 break; 1346 } 1347 1348 /* 1349 * After the _PTS method has been evaluated, we can 1350 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1351 */ 1352 acpi_wakedev_commit(sc, state); 1353 1354 sc->sc_sleepstate = state; 1355 1356 if (state == ACPI_STATE_S1) { 1357 1358 /* Just enter the state. */ 1359 acpi_md_OsDisableInterrupt(); 1360 rv = AcpiEnterSleepState(state); 1361 1362 if (ACPI_FAILURE(rv)) 1363 aprint_error_dev(sc->sc_dev, "failed to " 1364 "enter S1: %s\n", AcpiFormatException(rv)); 1365 1366 (void)AcpiLeaveSleepState(state); 1367 1368 } else { 1369 1370 err = acpi_md_sleep(state); 1371 1372 if (state == ACPI_STATE_S4) 1373 AcpiEnable(); 1374 1375 pmf_system_bus_resume(PMF_Q_NONE); 1376 (void)AcpiLeaveSleepState(state); 1377 pmf_system_resume(PMF_Q_NONE); 1378 } 1379 1380 break; 1381 1382 case ACPI_STATE_S5: 1383 1384 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1385 1386 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1387 1388 if (ACPI_FAILURE(rv)) { 1389 aprint_error_dev(sc->sc_dev, "failed to prepare " 1390 "S%d: %s\n", state, AcpiFormatException(rv)); 1391 break; 1392 } 1393 1394 (void)AcpiDisableAllGpes(); 1395 1396 DELAY(1000000); 1397 1398 sc->sc_sleepstate = state; 1399 acpi_md_OsDisableInterrupt(); 1400 1401 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1402 1403 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1404 1405 break; 1406 } 1407 1408 sc->sc_sleepstate = ACPI_STATE_S0; 1409 1410 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1411 } 1412 1413 /* 1414 * Sysctl. 1415 */ 1416 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1417 { 1418 const struct sysctlnode *mnode, *rnode, *snode; 1419 int err; 1420 1421 err = sysctl_createv(clog, 0, NULL, &rnode, 1422 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", 1423 NULL, NULL, 0, NULL, 0, 1424 CTL_HW, CTL_EOL); 1425 1426 if (err != 0) 1427 return; 1428 1429 err = sysctl_createv(clog, 0, &rnode, &rnode, 1430 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1431 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1432 NULL, 0, NULL, 0, 1433 CTL_CREATE, CTL_EOL); 1434 1435 if (err != 0) 1436 return; 1437 1438 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1439 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1440 "root", SYSCTL_DESCR("ACPI root pointer"), 1441 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1442 CTL_CREATE, CTL_EOL); 1443 1444 err = sysctl_createv(clog, 0, &rnode, &snode, 1445 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1446 "sleep", SYSCTL_DESCR("ACPI sleep"), 1447 NULL, 0, NULL, 0, 1448 CTL_CREATE, CTL_EOL); 1449 1450 if (err != 0) 1451 return; 1452 1453 (void)sysctl_createv(NULL, 0, &snode, NULL, 1454 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1455 "state", SYSCTL_DESCR("System sleep state"), 1456 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1457 CTL_CREATE, CTL_EOL); 1458 1459 (void)sysctl_createv(NULL, 0, &snode, NULL, 1460 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1461 "states", SYSCTL_DESCR("Supported sleep states"), 1462 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1463 CTL_CREATE, CTL_EOL); 1464 1465 /* 1466 * For the time being, machdep.sleep_state 1467 * is provided for backwards compatibility. 1468 */ 1469 err = sysctl_createv(NULL, 0, NULL, &mnode, 1470 CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep", 1471 NULL, NULL, 0, NULL, 0, 1472 CTL_MACHDEP, CTL_EOL); 1473 1474 if (err == 0) { 1475 1476 (void)sysctl_createv(NULL, 0, &mnode, NULL, 1477 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1478 "sleep_state", SYSCTL_DESCR("System sleep state"), 1479 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1480 CTL_CREATE, CTL_EOL); 1481 } 1482 1483 err = sysctl_createv(clog, 0, &rnode, &rnode, 1484 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1485 "stat", SYSCTL_DESCR("ACPI statistics"), 1486 NULL, 0, NULL, 0, 1487 CTL_CREATE, CTL_EOL); 1488 1489 if (err != 0) 1490 return; 1491 1492 (void)sysctl_createv(clog, 0, &rnode, NULL, 1493 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1494 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1495 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1496 CTL_CREATE, CTL_EOL); 1497 1498 (void)sysctl_createv(clog, 0, &rnode, NULL, 1499 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1500 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1501 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1502 CTL_CREATE, CTL_EOL); 1503 1504 (void)sysctl_createv(clog, 0, &rnode, NULL, 1505 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1506 "fixed", SYSCTL_DESCR("Number of fixed events"), 1507 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1508 CTL_CREATE, CTL_EOL); 1509 1510 (void)sysctl_createv(clog, 0, &rnode, NULL, 1511 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1512 "method", SYSCTL_DESCR("Number of methods executed"), 1513 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1514 CTL_CREATE, CTL_EOL); 1515 1516 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1517 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1518 } 1519 1520 static int 1521 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1522 { 1523 struct sysctlnode node; 1524 uint64_t t; 1525 int err, i; 1526 1527 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1528 t += AcpiFixedEventCount[i]; 1529 1530 node = *rnode; 1531 node.sysctl_data = &t; 1532 1533 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1534 1535 if (err || newp == NULL) 1536 return err; 1537 1538 return 0; 1539 } 1540 1541 static int 1542 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1543 { 1544 struct acpi_softc *sc = acpi_softc; 1545 struct sysctlnode node; 1546 int err, t; 1547 1548 if (acpi_softc == NULL) 1549 return ENOSYS; 1550 1551 node = *rnode; 1552 t = sc->sc_sleepstate; 1553 node.sysctl_data = &t; 1554 1555 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1556 1557 if (err || newp == NULL) 1558 return err; 1559 1560 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1561 return EINVAL; 1562 1563 acpi_enter_sleep_state(t); 1564 1565 return 0; 1566 } 1567 1568 static int 1569 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1570 { 1571 struct acpi_softc *sc = acpi_softc; 1572 struct sysctlnode node; 1573 char t[3 * 6 + 1]; 1574 int err; 1575 1576 if (acpi_softc == NULL) 1577 return ENOSYS; 1578 1579 (void)memset(t, '\0', sizeof(t)); 1580 1581 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1582 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1583 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1584 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1585 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1586 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1587 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1588 1589 node = *rnode; 1590 node.sysctl_data = &t; 1591 1592 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1593 1594 if (err || newp == NULL) 1595 return err; 1596 1597 return 0; 1598 } 1599 1600 /* 1601 * Tables. 1602 */ 1603 ACPI_PHYSICAL_ADDRESS 1604 acpi_OsGetRootPointer(void) 1605 { 1606 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1607 1608 /* 1609 * We let MD code handle this since there are multiple ways to do it: 1610 * 1611 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1612 * 1613 * IA-64: Use the EFI. 1614 */ 1615 PhysicalAddress = acpi_md_OsGetRootPointer(); 1616 1617 if (acpi_root_pointer == 0) 1618 acpi_root_pointer = PhysicalAddress; 1619 1620 return PhysicalAddress; 1621 } 1622 1623 static ACPI_TABLE_HEADER * 1624 acpi_map_rsdt(void) 1625 { 1626 ACPI_PHYSICAL_ADDRESS paddr; 1627 ACPI_TABLE_RSDP *rsdp; 1628 1629 paddr = AcpiOsGetRootPointer(); 1630 1631 if (paddr == 0) 1632 return NULL; 1633 1634 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1635 1636 if (rsdp == NULL) 1637 return NULL; 1638 1639 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1640 paddr = rsdp->XsdtPhysicalAddress; 1641 else 1642 paddr = rsdp->RsdtPhysicalAddress; 1643 1644 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1645 1646 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1647 } 1648 1649 static void 1650 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1651 { 1652 1653 if (rsdt == NULL) 1654 return; 1655 1656 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1657 } 1658 1659 /* 1660 * XXX: Refactor to be a generic function that maps tables. 1661 */ 1662 ACPI_STATUS 1663 acpi_madt_map(void) 1664 { 1665 ACPI_STATUS rv; 1666 1667 if (madt_header != NULL) 1668 return AE_ALREADY_EXISTS; 1669 1670 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); 1671 1672 if (ACPI_FAILURE(rv)) 1673 return rv; 1674 1675 return AE_OK; 1676 } 1677 1678 void 1679 acpi_madt_unmap(void) 1680 { 1681 madt_header = NULL; 1682 } 1683 1684 /* 1685 * XXX: Refactor to be a generic function that walks tables. 1686 */ 1687 void 1688 acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) 1689 { 1690 ACPI_SUBTABLE_HEADER *hdrp; 1691 char *madtend, *where; 1692 1693 madtend = (char *)madt_header + madt_header->Length; 1694 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); 1695 1696 while (where < madtend) { 1697 1698 hdrp = (ACPI_SUBTABLE_HEADER *)where; 1699 1700 if (ACPI_FAILURE(func(hdrp, aux))) 1701 break; 1702 1703 where += hdrp->Length; 1704 } 1705 } 1706 1707 /* 1708 * Miscellaneous. 1709 */ 1710 static bool 1711 acpi_is_scope(struct acpi_devnode *ad) 1712 { 1713 int i; 1714 1715 /* 1716 * Return true if the node is a root scope. 1717 */ 1718 if (ad->ad_parent == NULL) 1719 return false; 1720 1721 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1722 return false; 1723 1724 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1725 1726 if (acpi_scopes[i] == NULL) 1727 continue; 1728 1729 if (ad->ad_handle == acpi_scopes[i]) 1730 return true; 1731 } 1732 1733 return false; 1734 } 1735 1736 /* 1737 * ACPIVERBOSE. 1738 */ 1739 void 1740 acpi_load_verbose(void) 1741 { 1742 1743 if (acpi_verbose_loaded == 0) 1744 module_autoload("acpiverbose", MODULE_CLASS_MISC); 1745 } 1746 1747 void 1748 acpi_print_verbose_stub(struct acpi_softc *sc) 1749 { 1750 1751 acpi_load_verbose(); 1752 1753 if (acpi_verbose_loaded != 0) 1754 acpi_print_verbose(sc); 1755 } 1756 1757 void 1758 acpi_print_dev_stub(const char *pnpstr) 1759 { 1760 1761 acpi_load_verbose(); 1762 1763 if (acpi_verbose_loaded != 0) 1764 acpi_print_dev(pnpstr); 1765 } 1766 1767 /* 1768 * ACPI_ACTIVATE_DEV. 1769 */ 1770 static void 1771 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 1772 { 1773 1774 #ifndef ACPI_ACTIVATE_DEV 1775 return; 1776 } 1777 #else 1778 static const int valid = ACPI_VALID_STA | ACPI_VALID_HID; 1779 ACPI_DEVICE_INFO *newdi; 1780 ACPI_STATUS rv; 1781 uint32_t old; 1782 1783 /* 1784 * If the device is valid and present, 1785 * but not enabled, try to activate it. 1786 */ 1787 if (((*di)->Valid & valid) != valid) 1788 return; 1789 1790 old = (*di)->CurrentStatus; 1791 1792 if ((old & (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED)) != 1793 ACPI_STA_DEVICE_PRESENT) 1794 return; 1795 1796 rv = acpi_allocate_resources(handle); 1797 1798 if (ACPI_FAILURE(rv)) 1799 goto fail; 1800 1801 rv = AcpiGetObjectInfo(handle, &newdi); 1802 1803 if (ACPI_FAILURE(rv)) 1804 goto fail; 1805 1806 ACPI_FREE(*di); 1807 *di = newdi; 1808 1809 aprint_verbose_dev(acpi_softc->sc_dev, 1810 "%s activated, STA 0x%08X -> STA 0x%08X\n", 1811 (*di)->HardwareId.String, old, (*di)->CurrentStatus); 1812 1813 return; 1814 1815 fail: 1816 aprint_error_dev(acpi_softc->sc_dev, "failed to " 1817 "activate %s\n", (*di)->HardwareId.String); 1818 } 1819 1820 /* 1821 * XXX: This very incomplete. 1822 */ 1823 ACPI_STATUS 1824 acpi_allocate_resources(ACPI_HANDLE handle) 1825 { 1826 ACPI_BUFFER bufp, bufc, bufn; 1827 ACPI_RESOURCE *resp, *resc, *resn; 1828 ACPI_RESOURCE_IRQ *irq; 1829 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 1830 ACPI_STATUS rv; 1831 uint delta; 1832 1833 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 1834 if (ACPI_FAILURE(rv)) 1835 goto out; 1836 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 1837 if (ACPI_FAILURE(rv)) { 1838 goto out1; 1839 } 1840 1841 bufn.Length = 1000; 1842 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 1843 resp = bufp.Pointer; 1844 resc = bufc.Pointer; 1845 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 1846 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1847 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 1848 resp = ACPI_NEXT_RESOURCE(resp); 1849 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 1850 break; 1851 /* Found identical Id */ 1852 resn->Type = resc->Type; 1853 switch (resc->Type) { 1854 case ACPI_RESOURCE_TYPE_IRQ: 1855 memcpy(&resn->Data, &resp->Data, 1856 sizeof(ACPI_RESOURCE_IRQ)); 1857 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 1858 irq->Interrupts[0] = 1859 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 1860 Interrupts[irq->InterruptCount-1]; 1861 irq->InterruptCount = 1; 1862 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 1863 break; 1864 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 1865 memcpy(&resn->Data, &resp->Data, 1866 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 1867 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 1868 #if 0 1869 /* 1870 * XXX: Not duplicating the interrupt logic above 1871 * because its not clear what it accomplishes. 1872 */ 1873 xirq->Interrupts[0] = 1874 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 1875 Interrupts[irq->NumberOfInterrupts-1]; 1876 xirq->NumberOfInterrupts = 1; 1877 #endif 1878 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 1879 break; 1880 case ACPI_RESOURCE_TYPE_IO: 1881 memcpy(&resn->Data, &resp->Data, 1882 sizeof(ACPI_RESOURCE_IO)); 1883 resn->Length = resp->Length; 1884 break; 1885 default: 1886 aprint_error_dev(acpi_softc->sc_dev, 1887 "%s: invalid type %u\n", __func__, resc->Type); 1888 rv = AE_BAD_DATA; 1889 goto out2; 1890 } 1891 resc = ACPI_NEXT_RESOURCE(resc); 1892 resn = ACPI_NEXT_RESOURCE(resn); 1893 resp = ACPI_NEXT_RESOURCE(resp); 1894 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 1895 if (delta >= 1896 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 1897 bufn.Length *= 2; 1898 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 1899 M_ACPI, M_WAITOK); 1900 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 1901 delta); 1902 } 1903 } 1904 1905 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1906 aprint_error_dev(acpi_softc->sc_dev, 1907 "%s: resc not exhausted\n", __func__); 1908 rv = AE_BAD_DATA; 1909 goto out3; 1910 } 1911 1912 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 1913 rv = AcpiSetCurrentResources(handle, &bufn); 1914 1915 if (ACPI_FAILURE(rv)) 1916 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 1917 "resources: %s\n", __func__, AcpiFormatException(rv)); 1918 1919 out3: 1920 free(bufn.Pointer, M_ACPI); 1921 out2: 1922 ACPI_FREE(bufc.Pointer); 1923 out1: 1924 ACPI_FREE(bufp.Pointer); 1925 out: 1926 return rv; 1927 } 1928 1929 #endif /* ACPI_ACTIVATE_DEV */ 1930
Indexes created Mon Sep 22 13:09:51 GMT 2025