acpi.c revision 1.149
1 /* $NetBSD: acpi.c,v 1.149 2010/02/24 22:37:56 dyoung 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 2001, 2003 Wasabi Systems, Inc. 34 * All rights reserved. 35 * 36 * Written by Jason R. Thorpe 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 * Autoconfiguration support for the Intel ACPI Component Architecture 69 * ACPI reference implementation. 70 */ 71 72 #include <sys/cdefs.h> 73 __KERNEL_RCSID(0, "$NetBSD: acpi.c,v 1.149 2010/02/24 22:37:56 dyoung Exp $"); 74 75 #include "opt_acpi.h" 76 #include "opt_pcifixup.h" 77 78 #include <sys/param.h> 79 #include <sys/systm.h> 80 #include <sys/device.h> 81 #include <sys/malloc.h> 82 #include <sys/mutex.h> 83 #include <sys/kernel.h> 84 #include <sys/proc.h> 85 #include <sys/sysctl.h> 86 87 #include <dev/acpi/acpica.h> 88 #include <dev/acpi/acpireg.h> 89 #include <dev/acpi/acpivar.h> 90 #include <dev/acpi/acpi_osd.h> 91 #include <dev/acpi/acpi_timer.h> 92 #include <dev/acpi/acpi_wakedev.h> 93 #include <dev/acpi/acpi_pci.h> 94 #ifdef ACPIVERBOSE 95 #include <dev/acpi/acpidevs_data.h> 96 #endif 97 98 #define _COMPONENT ACPI_TOOLS 99 ACPI_MODULE_NAME ("acpi") 100 101 #if defined(ACPI_PCI_FIXUP) 102 #error The option ACPI_PCI_FIXUP has been obsoleted by PCI_INTR_FIXUP_DISABLED. Please adjust your kernel configuration file. 103 #endif 104 105 #ifdef PCI_INTR_FIXUP_DISABLED 106 #include <dev/pci/pcidevs.h> 107 #endif 108 109 MALLOC_DECLARE(M_ACPI); 110 111 #include <machine/acpi_machdep.h> 112 113 #ifdef ACPI_DEBUGGER 114 #define ACPI_DBGR_INIT 0x01 115 #define ACPI_DBGR_TABLES 0x02 116 #define ACPI_DBGR_ENABLE 0x04 117 #define ACPI_DBGR_PROBE 0x08 118 #define ACPI_DBGR_RUNNING 0x10 119 120 static int acpi_dbgr = 0x00; 121 #endif 122 123 static ACPI_TABLE_DESC acpi_initial_tables[128]; 124 125 static int acpi_match(device_t, cfdata_t, void *); 126 static void acpi_attach(device_t, device_t, void *); 127 static void acpi_childdet(device_t, device_t); 128 static int acpi_detach(device_t, int); 129 130 static int acpi_rescan(device_t, const char *, const int *); 131 static void acpi_rescan1(struct acpi_softc *, const char *, const int *); 132 static void acpi_rescan_nodes(struct acpi_softc *); 133 134 static int acpi_print(void *aux, const char *); 135 136 static int sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS); 137 138 extern struct cfdriver acpi_cd; 139 140 CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 141 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 142 143 /* 144 * This is a flag we set when the ACPI subsystem is active. Machine 145 * dependent code may wish to skip other steps (such as attaching 146 * subsystems that ACPI supercedes) when ACPI is active. 147 */ 148 int acpi_active; 149 int acpi_force_load; 150 int acpi_suspended = 0; 151 152 /* 153 * Pointer to the ACPI subsystem's state. There can be only 154 * one ACPI instance. 155 */ 156 struct acpi_softc *acpi_softc; 157 158 /* 159 * Locking stuff. 160 */ 161 extern kmutex_t acpi_interrupt_list_mtx; 162 163 /* 164 * Ignored HIDs. 165 */ 166 static const char * const acpi_ignored_ids[] = { 167 #if defined(i386) || defined(x86_64) 168 "PNP0000", /* AT interrupt controller is handled internally */ 169 "PNP0200", /* AT DMA controller is handled internally */ 170 "PNP0A??", /* PCI Busses are handled internally */ 171 "PNP0B00", /* AT RTC is handled internally */ 172 "PNP0C01", /* No "System Board" driver */ 173 "PNP0C02", /* No "PnP motherboard register resources" driver */ 174 "PNP0C0B", /* No need for "ACPI fan" driver */ 175 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 176 "INT0800", /* Intel HW RNG is handled internally */ 177 #endif 178 #if defined(x86_64) 179 "PNP0C04", /* FPU is handled internally */ 180 #endif 181 NULL 182 }; 183 184 /* 185 * sysctl-related information 186 */ 187 188 static uint64_t acpi_root_pointer; /* found as hw.acpi.root */ 189 static int acpi_sleepstate = ACPI_STATE_S0; 190 static char acpi_supported_states[3 * 6 + 1] = ""; 191 192 /* 193 * Prototypes. 194 */ 195 static void acpi_build_tree(struct acpi_softc *); 196 static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, UINT32, void *, void **); 197 198 static void acpi_enable_fixed_events(struct acpi_softc *); 199 200 static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 201 static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 202 static int is_available_state(struct acpi_softc *, int); 203 204 static bool acpi_suspend(device_t, const pmf_qual_t *); 205 static bool acpi_resume(device_t, const pmf_qual_t *); 206 207 /* 208 * acpi_probe: 209 * 210 * Probe for ACPI support. This is called by the 211 * machine-dependent ACPI front-end. All of the 212 * actual work is done by ACPICA. 213 * 214 * NOTE: This is not an autoconfiguration interface function. 215 */ 216 int 217 acpi_probe(void) 218 { 219 static int beenhere; 220 ACPI_TABLE_HEADER *rsdt; 221 ACPI_STATUS rv; 222 223 if (beenhere != 0) 224 panic("acpi_probe: ACPI has already been probed"); 225 beenhere = 1; 226 227 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 228 229 /* 230 * Start up ACPICA. 231 */ 232 #ifdef ACPI_DEBUGGER 233 if (acpi_dbgr & ACPI_DBGR_INIT) 234 acpi_osd_debugger(); 235 #endif 236 237 AcpiGbl_AllMethodsSerialized = FALSE; 238 AcpiGbl_EnableInterpreterSlack = TRUE; 239 240 rv = AcpiInitializeSubsystem(); 241 if (ACPI_FAILURE(rv)) { 242 printf("ACPI: unable to initialize ACPICA: %s\n", 243 AcpiFormatException(rv)); 244 return 0; 245 } 246 247 rv = AcpiInitializeTables(acpi_initial_tables, 128, 0); 248 if (ACPI_FAILURE(rv)) { 249 #ifdef ACPI_DEBUG 250 printf("ACPI: unable to initialize ACPI tables: %s\n", 251 AcpiFormatException(rv)); 252 #endif 253 AcpiTerminate(); 254 return 0; 255 } 256 257 rv = AcpiReallocateRootTable(); 258 if (ACPI_FAILURE(rv)) { 259 printf("ACPI: unable to reallocate root table: %s\n", 260 AcpiFormatException(rv)); 261 AcpiTerminate(); 262 return 0; 263 } 264 265 #ifdef ACPI_DEBUGGER 266 if (acpi_dbgr & ACPI_DBGR_TABLES) 267 acpi_osd_debugger(); 268 #endif 269 270 rv = AcpiLoadTables(); 271 if (ACPI_FAILURE(rv)) { 272 printf("ACPI: unable to load tables: %s\n", 273 AcpiFormatException(rv)); 274 AcpiTerminate(); 275 return 0; 276 } 277 278 rsdt = acpi_map_rsdt(); 279 if (rsdt == NULL) { 280 printf("ACPI: unable to map RSDT\n"); 281 AcpiTerminate(); 282 return 0; 283 } 284 285 if (!acpi_force_load && (acpi_find_quirks() & ACPI_QUIRK_BROKEN)) { 286 printf("ACPI: BIOS implementation in listed as broken:\n"); 287 printf("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 288 "AslId <%4.4s,%08x>\n", 289 rsdt->OemId, rsdt->OemTableId, 290 rsdt->OemRevision, 291 rsdt->AslCompilerId, 292 rsdt->AslCompilerRevision); 293 printf("ACPI: not used. set acpi_force_load to use anyway.\n"); 294 acpi_unmap_rsdt(rsdt); 295 AcpiTerminate(); 296 return 0; 297 } 298 299 acpi_unmap_rsdt(rsdt); 300 301 #if notyet 302 /* Install the default address space handlers. */ 303 rv = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, 304 ACPI_ADR_SPACE_SYSTEM_MEMORY, ACPI_DEFAULT_HANDLER, NULL, NULL); 305 if (ACPI_FAILURE(rv)) { 306 printf("ACPI: unable to initialize SystemMemory handler: %s\n", 307 AcpiFormatException(rv)); 308 AcpiTerminate(); 309 return 0; 310 } 311 rv = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, 312 ACPI_ADR_SPACE_SYSTEM_IO, ACPI_DEFAULT_HANDLER, NULL, NULL); 313 if (ACPI_FAILURE(rv)) { 314 printf("ACPI: unable to initialize SystemIO handler: %s\n", 315 AcpiFormatException(rv)); 316 AcpiTerminate(); 317 return 0; 318 } 319 rv = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, 320 ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL); 321 if (ACPI_FAILURE(rv)) { 322 printf("ACPI: unable to initialize PciConfig handler: %s\n", 323 AcpiFormatException(rv)); 324 AcpiTerminate(); 325 return 0; 326 } 327 #endif 328 329 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 330 if (ACPI_FAILURE(rv)) { 331 printf("ACPI: unable to enable: %s\n", AcpiFormatException(rv)); 332 AcpiTerminate(); 333 return 0; 334 } 335 336 /* 337 * Looks like we have ACPI! 338 */ 339 340 return 1; 341 } 342 343 static int 344 acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 345 { 346 struct cfattach *ca; 347 348 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 349 return (ca == &acpi_ca); 350 } 351 352 int 353 acpi_check(device_t parent, const char *ifattr) 354 { 355 return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); 356 } 357 358 ACPI_PHYSICAL_ADDRESS 359 acpi_OsGetRootPointer(void) 360 { 361 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 362 363 /* 364 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 365 * 366 * IA-64: Use the EFI. 367 * 368 * We let MD code handle this since there are multiple 369 * ways to do it. 370 */ 371 372 PhysicalAddress = acpi_md_OsGetRootPointer(); 373 374 if (acpi_root_pointer == 0) 375 acpi_root_pointer = PhysicalAddress; 376 377 return PhysicalAddress; 378 } 379 380 /* 381 * acpi_match: 382 * 383 * Autoconfiguration `match' routine. 384 */ 385 static int 386 acpi_match(device_t parent, cfdata_t match, void *aux) 387 { 388 /* 389 * XXX Check other locators? Hard to know -- machine 390 * dependent code has already checked for the presence 391 * of ACPI by calling acpi_probe(), so I suppose we 392 * don't really have to do anything else. 393 */ 394 return 1; 395 } 396 397 /* Remove references to child devices. 398 * 399 * XXX Need to reclaim any resources? 400 */ 401 static void 402 acpi_childdet(device_t self, device_t child) 403 { 404 struct acpi_softc *sc = device_private(self); 405 struct acpi_scope *as; 406 struct acpi_devnode *ad; 407 408 if (sc->sc_apmbus == child) 409 sc->sc_apmbus = NULL; 410 411 TAILQ_FOREACH(as, &sc->sc_scopes, as_list) { 412 TAILQ_FOREACH(ad, &as->as_devnodes, ad_list) { 413 if (ad->ad_device == child) 414 ad->ad_device = NULL; 415 } 416 } 417 } 418 419 /* 420 * acpi_attach: 421 * 422 * Autoconfiguration `attach' routine. Finish initializing 423 * ACPICA (some initialization was done in acpi_probe(), 424 * which was required to check for the presence of ACPI), 425 * and enable the ACPI subsystem. 426 */ 427 static void 428 acpi_attach(device_t parent, device_t self, void *aux) 429 { 430 struct acpi_softc *sc = device_private(self); 431 struct acpibus_attach_args *aa = aux; 432 ACPI_STATUS rv; 433 ACPI_TABLE_HEADER *rsdt; 434 435 aprint_naive("\n"); 436 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 437 438 if (acpi_softc != NULL) 439 panic("acpi_attach: ACPI has already been attached"); 440 441 sysmon_power_settype("acpi"); 442 443 rsdt = acpi_map_rsdt(); 444 if (rsdt) { 445 aprint_verbose_dev( 446 self, 447 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 448 rsdt->OemId, rsdt->OemTableId, 449 rsdt->OemRevision, 450 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 451 } else 452 aprint_error_dev(self, "X/RSDT: Not found\n"); 453 acpi_unmap_rsdt(rsdt); 454 455 sc->sc_dev = self; 456 sc->sc_quirks = acpi_find_quirks(); 457 458 sc->sc_iot = aa->aa_iot; 459 sc->sc_memt = aa->aa_memt; 460 sc->sc_pc = aa->aa_pc; 461 sc->sc_pciflags = aa->aa_pciflags; 462 sc->sc_ic = aa->aa_ic; 463 464 acpi_softc = sc; 465 466 /* 467 * Register null power management handler. 468 */ 469 if (!pmf_device_register(self, acpi_suspend, acpi_resume)) 470 aprint_error_dev(self, "couldn't establish power handler\n"); 471 472 /* 473 * Bring ACPI on-line. 474 */ 475 #ifdef ACPI_DEBUGGER 476 if (acpi_dbgr & ACPI_DBGR_ENABLE) 477 acpi_osd_debugger(); 478 #endif 479 480 #define ACPI_ENABLE_PHASE1 \ 481 (ACPI_NO_HANDLER_INIT | ACPI_NO_EVENT_INIT) 482 #define ACPI_ENABLE_PHASE2 \ 483 (ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE | \ 484 ACPI_NO_ADDRESS_SPACE_INIT) 485 486 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE1); 487 if (ACPI_FAILURE(rv)) { 488 aprint_error_dev(self, "unable to enable ACPI: %s\n", 489 AcpiFormatException(rv)); 490 return; 491 } 492 493 acpi_md_callback(); 494 495 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE2); 496 if (ACPI_FAILURE(rv)) { 497 aprint_error_dev(self, "unable to enable ACPI: %s\n", 498 AcpiFormatException(rv)); 499 return; 500 } 501 502 /* Early EC handler initialization if ECDT table is available. */ 503 config_found_ia(self, "acpiecdtbus", NULL, NULL); 504 505 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 506 if (ACPI_FAILURE(rv)) { 507 aprint_error_dev(self, 508 "unable to initialize ACPI objects: %s\n", 509 AcpiFormatException(rv)); 510 return; 511 } 512 acpi_active = 1; 513 514 /* Our current state is "awake". */ 515 sc->sc_sleepstate = ACPI_STATE_S0; 516 517 /* Show SCI interrupt. */ 518 aprint_verbose_dev(self, "SCI interrupting at int %d\n", 519 AcpiGbl_FADT.SciInterrupt); 520 521 /* 522 * Check for fixed-hardware features. 523 */ 524 acpi_enable_fixed_events(sc); 525 acpitimer_init(); 526 527 /* 528 * Scan the namespace and build our device tree. 529 */ 530 #ifdef ACPI_DEBUGGER 531 if (acpi_dbgr & ACPI_DBGR_PROBE) 532 acpi_osd_debugger(); 533 #endif 534 acpi_build_tree(sc); 535 536 snprintf(acpi_supported_states, sizeof(acpi_supported_states), 537 "%s%s%s%s%s%s", 538 is_available_state(sc, ACPI_STATE_S0) ? "S0 " : "", 539 is_available_state(sc, ACPI_STATE_S1) ? "S1 " : "", 540 is_available_state(sc, ACPI_STATE_S2) ? "S2 " : "", 541 is_available_state(sc, ACPI_STATE_S3) ? "S3 " : "", 542 is_available_state(sc, ACPI_STATE_S4) ? "S4 " : "", 543 is_available_state(sc, ACPI_STATE_S5) ? "S5 " : ""); 544 545 #ifdef ACPI_DEBUGGER 546 if (acpi_dbgr & ACPI_DBGR_RUNNING) 547 acpi_osd_debugger(); 548 #endif 549 550 #ifdef ACPI_DEBUG 551 acpi_debug_init(); 552 #endif 553 } 554 555 static int 556 acpi_detach(device_t self, int flags) 557 { 558 int rc; 559 560 #ifdef ACPI_DEBUGGER 561 if (acpi_dbgr & ACPI_DBGR_RUNNING) 562 acpi_osd_debugger(); 563 #endif 564 565 if ((rc = config_detach_children(self, flags)) != 0) 566 return rc; 567 568 #ifdef ACPI_DEBUGGER 569 if (acpi_dbgr & ACPI_DBGR_PROBE) 570 acpi_osd_debugger(); 571 #endif 572 573 if ((rc = acpitimer_detach()) != 0) 574 return rc; 575 576 #if 0 577 /* 578 * Bring ACPI on-line. 579 */ 580 #ifdef ACPI_DEBUGGER 581 if (acpi_dbgr & ACPI_DBGR_ENABLE) 582 acpi_osd_debugger(); 583 #endif 584 585 #define ACPI_ENABLE_PHASE1 \ 586 (ACPI_NO_HANDLER_INIT | ACPI_NO_EVENT_INIT) 587 #define ACPI_ENABLE_PHASE2 \ 588 (ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE | \ 589 ACPI_NO_ADDRESS_SPACE_INIT) 590 591 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE1); 592 if (ACPI_FAILURE(rv)) { 593 aprint_error_dev(self, "unable to enable ACPI: %s\n", 594 AcpiFormatException(rv)); 595 return; 596 } 597 598 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE2); 599 if (ACPI_FAILURE(rv)) { 600 aprint_error_dev(self, "unable to enable ACPI: %s\n", 601 AcpiFormatException(rv)); 602 return; 603 } 604 605 /* Early EC handler initialization if ECDT table is available. */ 606 config_found_ia(self, "acpiecdtbus", NULL, NULL); 607 608 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 609 if (ACPI_FAILURE(rv)) { 610 aprint_error_dev(self, 611 "unable to initialize ACPI objects: %s\n", 612 AcpiFormatException(rv)); 613 return; 614 } 615 acpi_active = 1; 616 617 acpi_enable_fixed_events(sc); 618 #endif 619 620 pmf_device_deregister(self); 621 622 #if 0 623 sysmon_power_settype("acpi"); 624 #endif 625 acpi_softc = NULL; 626 627 return 0; 628 } 629 630 static bool 631 acpi_suspend(device_t dv, const pmf_qual_t *qual) 632 { 633 acpi_suspended = 1; 634 return true; 635 } 636 637 static bool 638 acpi_resume(device_t dv, const pmf_qual_t *qual) 639 { 640 acpi_suspended = 0; 641 return true; 642 } 643 644 #if 0 645 /* 646 * acpi_disable: 647 * 648 * Disable ACPI. 649 */ 650 static ACPI_STATUS 651 acpi_disable(struct acpi_softc *sc) 652 { 653 ACPI_STATUS rv = AE_OK; 654 655 if (acpi_active) { 656 rv = AcpiDisable(); 657 if (ACPI_SUCCESS(rv)) 658 acpi_active = 0; 659 } 660 return rv; 661 } 662 #endif 663 664 struct acpi_make_devnode_state { 665 struct acpi_softc *softc; 666 struct acpi_scope *scope; 667 }; 668 669 /* 670 * acpi_build_tree: 671 * 672 * Scan relevant portions of the ACPI namespace and attach 673 * child devices. 674 */ 675 static void 676 acpi_build_tree(struct acpi_softc *sc) 677 { 678 static const char *scopes[] = { 679 "\\_PR_", /* ACPI 1.0 processor namespace */ 680 "\\_SB_", /* system bus namespace */ 681 "\\_SI_", /* system indicator namespace */ 682 "\\_TZ_", /* ACPI 1.0 thermal zone namespace */ 683 NULL, 684 }; 685 struct acpi_make_devnode_state state; 686 struct acpi_scope *as; 687 ACPI_HANDLE parent; 688 ACPI_STATUS rv; 689 int i; 690 691 TAILQ_INIT(&sc->sc_scopes); 692 693 state.softc = sc; 694 695 /* 696 * Scan the namespace and build our tree. 697 */ 698 for (i = 0; scopes[i] != NULL; i++) { 699 as = malloc(sizeof(*as), M_ACPI, M_WAITOK); 700 as->as_name = scopes[i]; 701 TAILQ_INIT(&as->as_devnodes); 702 703 TAILQ_INSERT_TAIL(&sc->sc_scopes, as, as_list); 704 705 state.scope = as; 706 707 rv = AcpiGetHandle(ACPI_ROOT_OBJECT, scopes[i], 708 &parent); 709 if (ACPI_SUCCESS(rv)) { 710 AcpiWalkNamespace(ACPI_TYPE_ANY, parent, 100, 711 acpi_make_devnode, &state, NULL); 712 } 713 } 714 715 acpi_rescan1(sc, NULL, NULL); 716 717 acpi_wakedev_scan(sc); 718 719 acpi_pcidev_scan(sc); 720 } 721 722 static int 723 acpi_rescan(device_t self, const char *ifattr, const int *locators) 724 { 725 struct acpi_softc *sc = device_private(self); 726 727 acpi_rescan1(sc, ifattr, locators); 728 return 0; 729 } 730 731 static void 732 acpi_rescan1(struct acpi_softc *sc, const char *ifattr, const int *locators) 733 { 734 if (ifattr_match(ifattr, "acpinodebus")) 735 acpi_rescan_nodes(sc); 736 737 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) { 738 sc->sc_apmbus = config_found_ia(sc->sc_dev, "acpiapmbus", NULL, 739 NULL); 740 } 741 } 742 743 static void 744 acpi_rescan_nodes(struct acpi_softc *sc) 745 { 746 struct acpi_scope *as; 747 748 TAILQ_FOREACH(as, &sc->sc_scopes, as_list) { 749 struct acpi_devnode *ad; 750 751 /* Now, for this namespace, try to attach the devices. */ 752 TAILQ_FOREACH(ad, &as->as_devnodes, ad_list) { 753 struct acpi_attach_args aa; 754 755 if (ad->ad_device != NULL) 756 continue; 757 758 aa.aa_node = ad; 759 aa.aa_iot = sc->sc_iot; 760 aa.aa_memt = sc->sc_memt; 761 aa.aa_pc = sc->sc_pc; 762 aa.aa_pciflags = sc->sc_pciflags; 763 aa.aa_ic = sc->sc_ic; 764 765 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) { 766 /* 767 * XXX We only attach devices which are: 768 * 769 * - present 770 * - enabled 771 * - functioning properly 772 * 773 * However, if enabled, it's decoding resources, 774 * so we should claim them, if possible. 775 * Requires changes to bus_space(9). 776 */ 777 if ((ad->ad_devinfo->Valid & ACPI_VALID_STA) == 778 ACPI_VALID_STA && 779 (ad->ad_devinfo->CurrentStatus & 780 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED| 781 ACPI_STA_DEV_OK)) != 782 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED| 783 ACPI_STA_DEV_OK)) 784 continue; 785 } 786 787 /* 788 * XXX Same problem as above... 789 * 790 * Do this check only for devices, as e.g. 791 * a Thermal Zone doesn't have a HID. 792 */ 793 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE && 794 (ad->ad_devinfo->Valid & ACPI_VALID_HID) == 0) 795 continue; 796 797 /* 798 * Handled internally 799 */ 800 if (ad->ad_devinfo->Type == ACPI_TYPE_PROCESSOR || 801 ad->ad_devinfo->Type == ACPI_TYPE_POWER) 802 continue; 803 804 /* 805 * Skip ignored HIDs 806 */ 807 if (acpi_match_hid(ad->ad_devinfo, acpi_ignored_ids)) 808 continue; 809 810 ad->ad_device = config_found_ia(sc->sc_dev, 811 "acpinodebus", &aa, acpi_print); 812 } 813 } 814 } 815 816 #ifdef ACPI_ACTIVATE_DEV 817 static void 818 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 819 { 820 ACPI_STATUS rv; 821 ACPI_DEVICE_INFO *newdi; 822 823 #ifdef ACPI_DEBUG 824 aprint_normal("acpi_activate_device: %s, old status=%x\n", 825 (*di)->HardwareId.Value, (*di)->CurrentStatus); 826 #endif 827 828 rv = acpi_allocate_resources(handle); 829 if (ACPI_FAILURE(rv)) { 830 aprint_error("acpi: activate failed for %s\n", 831 (*di)->HardwareId.String); 832 } else { 833 aprint_verbose("acpi: activated %s\n", 834 (*di)->HardwareId.String); 835 } 836 837 (void)AcpiGetObjectInfo(handle, &newdi); 838 ACPI_FREE(*di); 839 *di = newdi; 840 841 #ifdef ACPI_DEBUG 842 aprint_normal("acpi_activate_device: %s, new status=%x\n", 843 (*di)->HardwareId.Value, (*di)->CurrentStatus); 844 #endif 845 } 846 #endif /* ACPI_ACTIVATE_DEV */ 847 848 /* 849 * acpi_make_devnode: 850 * 851 * Make an ACPI devnode. 852 */ 853 static ACPI_STATUS 854 acpi_make_devnode(ACPI_HANDLE handle, UINT32 level, void *context, 855 void **status) 856 { 857 struct acpi_make_devnode_state *state = context; 858 #if defined(ACPI_DEBUG) || defined(ACPI_EXTRA_DEBUG) 859 struct acpi_softc *sc = state->softc; 860 #endif 861 struct acpi_scope *as = state->scope; 862 struct acpi_devnode *ad; 863 ACPI_OBJECT_TYPE type; 864 ACPI_DEVICE_INFO *devinfo; 865 ACPI_STATUS rv; 866 ACPI_NAME_UNION *anu; 867 int i, clear = 0; 868 869 rv = AcpiGetType(handle, &type); 870 if (ACPI_SUCCESS(rv)) { 871 rv = AcpiGetObjectInfo(handle, &devinfo); 872 if (ACPI_FAILURE(rv)) { 873 #ifdef ACPI_DEBUG 874 aprint_normal_dev(sc->sc_dev, 875 "AcpiGetObjectInfo failed: %s\n", 876 AcpiFormatException(rv)); 877 #endif 878 goto out; /* XXX why return OK */ 879 } 880 881 switch (type) { 882 case ACPI_TYPE_DEVICE: 883 #ifdef ACPI_ACTIVATE_DEV 884 if ((devinfo->Valid & (ACPI_VALID_STA|ACPI_VALID_HID)) == 885 (ACPI_VALID_STA|ACPI_VALID_HID) && 886 (devinfo->CurrentStatus & 887 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED)) == 888 ACPI_STA_DEV_PRESENT) 889 acpi_activate_device(handle, &devinfo); 890 891 /* FALLTHROUGH */ 892 #endif 893 894 case ACPI_TYPE_PROCESSOR: 895 case ACPI_TYPE_THERMAL: 896 case ACPI_TYPE_POWER: 897 ad = malloc(sizeof(*ad), M_ACPI, M_NOWAIT|M_ZERO); 898 if (ad == NULL) 899 return AE_NO_MEMORY; 900 901 ad->ad_devinfo = devinfo; 902 ad->ad_handle = handle; 903 ad->ad_level = level; 904 ad->ad_scope = as; 905 ad->ad_type = type; 906 907 anu = (ACPI_NAME_UNION *)&devinfo->Name; 908 ad->ad_name[4] = '\0'; 909 for (i = 3, clear = 0; i >= 0; i--) { 910 if (!clear && anu->Ascii[i] == '_') 911 ad->ad_name[i] = '\0'; 912 else { 913 ad->ad_name[i] = anu->Ascii[i]; 914 clear = 1; 915 } 916 } 917 if (ad->ad_name[0] == '\0') 918 ad->ad_name[0] = '_'; 919 920 TAILQ_INSERT_TAIL(&as->as_devnodes, ad, ad_list); 921 922 if (type == ACPI_TYPE_DEVICE && 923 (ad->ad_devinfo->Valid & ACPI_VALID_HID) == 0) 924 goto out; 925 926 #ifdef ACPI_EXTRA_DEBUG 927 aprint_normal_dev(sc->sc_dev, 928 "HID %s found in scope %s level %d\n", 929 ad->ad_devinfo->HardwareId.String, 930 as->as_name, ad->ad_level); 931 if (ad->ad_devinfo->Valid & ACPI_VALID_UID) 932 aprint_normal(" UID %s\n", 933 ad->ad_devinfo->UniqueId.String); 934 if (ad->ad_devinfo->Valid & ACPI_VALID_ADR) 935 aprint_normal(" ADR 0x%016" PRIx64 "\n", 936 ad->ad_devinfo->Address); 937 if (ad->ad_devinfo->Valid & ACPI_VALID_STA) 938 aprint_normal(" STA 0x%08x\n", 939 ad->ad_devinfo->CurrentStatus); 940 #endif 941 } 942 } 943 out: 944 return AE_OK; 945 } 946 947 /* 948 * acpi_print: 949 * 950 * Autoconfiguration print routine for ACPI node bus. 951 */ 952 static int 953 acpi_print(void *aux, const char *pnp) 954 { 955 struct acpi_attach_args *aa = aux; 956 ACPI_STATUS rv; 957 958 if (pnp) { 959 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 960 char *pnpstr = 961 aa->aa_node->ad_devinfo->HardwareId.String; 962 ACPI_BUFFER buf; 963 964 aprint_normal("%s (%s) ", aa->aa_node->ad_name, 965 pnpstr); 966 967 rv = acpi_eval_struct(aa->aa_node->ad_handle, 968 "_STR", &buf); 969 if (ACPI_SUCCESS(rv)) { 970 ACPI_OBJECT *obj = buf.Pointer; 971 switch (obj->Type) { 972 case ACPI_TYPE_STRING: 973 aprint_normal("[%s] ", obj->String.Pointer); 974 break; 975 case ACPI_TYPE_BUFFER: 976 aprint_normal("buffer %p ", obj->Buffer.Pointer); 977 break; 978 default: 979 aprint_normal("type %d ",obj->Type); 980 break; 981 } 982 ACPI_FREE(buf.Pointer); 983 } 984 #ifdef ACPIVERBOSE 985 else { 986 int i; 987 988 for (i = 0; i < __arraycount(acpi_knowndevs); 989 i++) { 990 if (strcmp(acpi_knowndevs[i].pnp, 991 pnpstr) == 0) { 992 aprint_normal("[%s] ", 993 acpi_knowndevs[i].str); 994 } 995 } 996 } 997 998 #endif 999 aprint_normal("at %s", pnp); 1000 } else if (aa->aa_node->ad_devinfo->Type != ACPI_TYPE_DEVICE) { 1001 aprint_normal("%s (ACPI Object Type '%s' " 1002 "[0x%02x]) ", aa->aa_node->ad_name, 1003 AcpiUtGetTypeName(aa->aa_node->ad_devinfo->Type), 1004 aa->aa_node->ad_devinfo->Type); 1005 aprint_normal("at %s", pnp); 1006 } else 1007 return 0; 1008 } else { 1009 aprint_normal(" (%s", aa->aa_node->ad_name); 1010 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1011 aprint_normal(", %s", aa->aa_node->ad_devinfo->HardwareId.String); 1012 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_UID) { 1013 const char *uid; 1014 1015 uid = aa->aa_node->ad_devinfo->UniqueId.String; 1016 if (uid[0] == '\0') 1017 uid = "<null>"; 1018 aprint_normal("-%s", uid); 1019 } 1020 } 1021 aprint_normal(")"); 1022 } 1023 1024 return UNCONF; 1025 } 1026 1027 /***************************************************************************** 1028 * ACPI fixed-hardware feature handlers 1029 *****************************************************************************/ 1030 1031 static UINT32 acpi_fixed_button_handler(void *); 1032 static void acpi_fixed_button_pressed(void *); 1033 1034 /* 1035 * acpi_enable_fixed_events: 1036 * 1037 * Enable any fixed-hardware feature handlers. 1038 */ 1039 static void 1040 acpi_enable_fixed_events(struct acpi_softc *sc) 1041 { 1042 static int beenhere; 1043 ACPI_STATUS rv; 1044 1045 KASSERT(beenhere == 0); 1046 beenhere = 1; 1047 1048 /* 1049 * Check for fixed-hardware buttons. 1050 */ 1051 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) { 1052 aprint_verbose_dev(sc->sc_dev, 1053 "fixed-feature power button present\n"); 1054 sc->sc_smpsw_power.smpsw_name = device_xname(sc->sc_dev); 1055 sc->sc_smpsw_power.smpsw_type = PSWITCH_TYPE_POWER; 1056 if (sysmon_pswitch_register(&sc->sc_smpsw_power) != 0) { 1057 aprint_error_dev(sc->sc_dev, 1058 "unable to register fixed power " 1059 "button with sysmon\n"); 1060 } else { 1061 rv = AcpiInstallFixedEventHandler( 1062 ACPI_EVENT_POWER_BUTTON, 1063 acpi_fixed_button_handler, &sc->sc_smpsw_power); 1064 if (ACPI_FAILURE(rv)) { 1065 aprint_error_dev(sc->sc_dev, 1066 "unable to install handler " 1067 "for fixed power button: %s\n", 1068 AcpiFormatException(rv)); 1069 } 1070 } 1071 } 1072 1073 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) { 1074 aprint_verbose_dev(sc->sc_dev, 1075 "fixed-feature sleep button present\n"); 1076 sc->sc_smpsw_sleep.smpsw_name = device_xname(sc->sc_dev); 1077 sc->sc_smpsw_sleep.smpsw_type = PSWITCH_TYPE_SLEEP; 1078 if (sysmon_pswitch_register(&sc->sc_smpsw_power) != 0) { 1079 aprint_error_dev(sc->sc_dev, 1080 "unable to register fixed sleep " 1081 "button with sysmon\n"); 1082 } else { 1083 rv = AcpiInstallFixedEventHandler( 1084 ACPI_EVENT_SLEEP_BUTTON, 1085 acpi_fixed_button_handler, &sc->sc_smpsw_sleep); 1086 if (ACPI_FAILURE(rv)) { 1087 aprint_error_dev(sc->sc_dev, 1088 "unable to install handler " 1089 "for fixed sleep button: %s\n", 1090 AcpiFormatException(rv)); 1091 } 1092 } 1093 } 1094 } 1095 1096 /* 1097 * acpi_fixed_button_handler: 1098 * 1099 * Event handler for the fixed buttons. 1100 */ 1101 static UINT32 1102 acpi_fixed_button_handler(void *context) 1103 { 1104 struct sysmon_pswitch *smpsw = context; 1105 ACPI_STATUS rv; 1106 1107 #ifdef ACPI_BUT_DEBUG 1108 printf("%s: fixed button handler\n", smpsw->smpsw_name); 1109 #endif 1110 1111 rv = AcpiOsExecute(OSL_NOTIFY_HANDLER, 1112 acpi_fixed_button_pressed, smpsw); 1113 if (ACPI_FAILURE(rv)) 1114 printf("%s: WARNING: unable to queue fixed button pressed " 1115 "callback: %s\n", smpsw->smpsw_name, 1116 AcpiFormatException(rv)); 1117 1118 return ACPI_INTERRUPT_HANDLED; 1119 } 1120 1121 /* 1122 * acpi_fixed_button_pressed: 1123 * 1124 * Deal with a fixed button being pressed. 1125 */ 1126 static void 1127 acpi_fixed_button_pressed(void *context) 1128 { 1129 struct sysmon_pswitch *smpsw = context; 1130 1131 #ifdef ACPI_BUT_DEBUG 1132 printf("%s: fixed button pressed, calling sysmon\n", 1133 smpsw->smpsw_name); 1134 #endif 1135 1136 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1137 } 1138 1139 /***************************************************************************** 1140 * ACPI utility routines. 1141 *****************************************************************************/ 1142 1143 /* 1144 * acpi_eval_integer: 1145 * 1146 * Evaluate an integer object. 1147 */ 1148 ACPI_STATUS 1149 acpi_eval_integer(ACPI_HANDLE handle, const char *path, ACPI_INTEGER *valp) 1150 { 1151 ACPI_STATUS rv; 1152 ACPI_BUFFER buf; 1153 ACPI_OBJECT param; 1154 1155 if (handle == NULL) 1156 handle = ACPI_ROOT_OBJECT; 1157 1158 buf.Pointer = ¶m; 1159 buf.Length = sizeof(param); 1160 1161 rv = AcpiEvaluateObjectTyped(handle, path, NULL, &buf, 1162 ACPI_TYPE_INTEGER); 1163 if (ACPI_SUCCESS(rv)) 1164 *valp = param.Integer.Value; 1165 1166 return rv; 1167 } 1168 1169 /* 1170 * acpi_eval_set_integer: 1171 * 1172 * Evaluate an integer object with a single integer input parameter. 1173 */ 1174 ACPI_STATUS 1175 acpi_eval_set_integer(ACPI_HANDLE handle, const char *path, ACPI_INTEGER arg) 1176 { 1177 ACPI_OBJECT param_arg; 1178 ACPI_OBJECT_LIST param_args; 1179 1180 if (handle == NULL) 1181 handle = ACPI_ROOT_OBJECT; 1182 1183 param_arg.Type = ACPI_TYPE_INTEGER; 1184 param_arg.Integer.Value = arg; 1185 1186 param_args.Count = 1; 1187 param_args.Pointer = ¶m_arg; 1188 1189 return AcpiEvaluateObject(handle, path, ¶m_args, NULL); 1190 } 1191 1192 /* 1193 * acpi_eval_string: 1194 * 1195 * Evaluate a (Unicode) string object. 1196 */ 1197 ACPI_STATUS 1198 acpi_eval_string(ACPI_HANDLE handle, const char *path, char **stringp) 1199 { 1200 ACPI_OBJECT *obj; 1201 ACPI_BUFFER buf; 1202 ACPI_STATUS rv; 1203 1204 rv = acpi_eval_struct(handle, path, &buf); 1205 1206 if (ACPI_FAILURE(rv)) 1207 return rv; 1208 1209 obj = buf.Pointer; 1210 1211 if (obj->Type != ACPI_TYPE_STRING) { 1212 rv = AE_TYPE; 1213 goto out; 1214 } 1215 1216 if (obj->String.Length == 0) { 1217 rv = AE_BAD_DATA; 1218 goto out; 1219 } 1220 1221 *stringp = ACPI_ALLOCATE(obj->String.Length + 1); 1222 1223 if (*stringp == NULL) { 1224 rv = AE_NO_MEMORY; 1225 goto out; 1226 } 1227 1228 (void)memcpy(*stringp, obj->String.Pointer, obj->String.Length); 1229 1230 (*stringp)[obj->String.Length] = '\0'; 1231 1232 out: 1233 ACPI_FREE(buf.Pointer); 1234 1235 return rv; 1236 } 1237 1238 /* 1239 * acpi_eval_struct: 1240 * 1241 * Evaluate a more complex structure. 1242 * Caller must free buf.Pointer by ACPI_FREE(). 1243 */ 1244 ACPI_STATUS 1245 acpi_eval_struct(ACPI_HANDLE handle, const char *path, ACPI_BUFFER *bufp) 1246 { 1247 ACPI_STATUS rv; 1248 1249 if (handle == NULL) 1250 handle = ACPI_ROOT_OBJECT; 1251 1252 bufp->Pointer = NULL; 1253 bufp->Length = ACPI_ALLOCATE_LOCAL_BUFFER; 1254 1255 rv = AcpiEvaluateObject(handle, path, NULL, bufp); 1256 1257 return rv; 1258 } 1259 1260 /* 1261 * acpi_eval_reference_handle: 1262 * 1263 * Evaluate a reference handle from an element in a package. 1264 */ 1265 ACPI_STATUS 1266 acpi_eval_reference_handle(ACPI_OBJECT *elm, ACPI_HANDLE *handle) 1267 { 1268 1269 if (elm == NULL || handle == NULL) 1270 return AE_BAD_PARAMETER; 1271 1272 switch (elm->Type) { 1273 1274 case ACPI_TYPE_ANY: 1275 case ACPI_TYPE_LOCAL_REFERENCE: 1276 1277 if (elm->Reference.Handle == NULL) 1278 return AE_NULL_ENTRY; 1279 1280 *handle = elm->Reference.Handle; 1281 1282 return AE_OK; 1283 1284 case ACPI_TYPE_STRING: 1285 return AcpiGetHandle(NULL, elm->String.Pointer, handle); 1286 1287 default: 1288 return AE_TYPE; 1289 } 1290 } 1291 1292 /* 1293 * acpi_foreach_package_object: 1294 * 1295 * Iterate over all objects in a package, and pass them all 1296 * to a function. If the called function returns non AE_OK, the 1297 * iteration is stopped and that value is returned. 1298 */ 1299 ACPI_STATUS 1300 acpi_foreach_package_object(ACPI_OBJECT *pkg, 1301 ACPI_STATUS (*func)(ACPI_OBJECT *, void *), 1302 void *arg) 1303 { 1304 ACPI_STATUS rv = AE_OK; 1305 int i; 1306 1307 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE) 1308 return AE_BAD_PARAMETER; 1309 1310 for (i = 0; i < pkg->Package.Count; i++) { 1311 rv = (*func)(&pkg->Package.Elements[i], arg); 1312 if (ACPI_FAILURE(rv)) 1313 break; 1314 } 1315 1316 return rv; 1317 } 1318 1319 /* 1320 * acpi_name: 1321 * 1322 * Return a complete pathname from a handle. 1323 * 1324 * Note that the function uses static data storage; 1325 * if the data is needed for future use, it should be 1326 * copied before any subsequent calls overwrite it. 1327 */ 1328 const char * 1329 acpi_name(ACPI_HANDLE handle) 1330 { 1331 static char buffer[80]; 1332 ACPI_BUFFER buf; 1333 ACPI_STATUS rv; 1334 1335 buf.Length = sizeof(buffer); 1336 buf.Pointer = buffer; 1337 1338 rv = AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf); 1339 if (ACPI_FAILURE(rv)) 1340 return "(unknown acpi path)"; 1341 return buffer; 1342 } 1343 1344 /* 1345 * acpi_get: 1346 * 1347 * Fetch data info the specified (empty) ACPI buffer. 1348 * Caller must free buf.Pointer by ACPI_FREE(). 1349 */ 1350 ACPI_STATUS 1351 acpi_get(ACPI_HANDLE handle, ACPI_BUFFER *buf, 1352 ACPI_STATUS (*getit)(ACPI_HANDLE, ACPI_BUFFER *)) 1353 { 1354 buf->Pointer = NULL; 1355 buf->Length = ACPI_ALLOCATE_LOCAL_BUFFER; 1356 1357 return (*getit)(handle, buf); 1358 } 1359 1360 1361 /* 1362 * acpi_match_hid 1363 * 1364 * Match given ids against _HID and _CIDs. 1365 */ 1366 int 1367 acpi_match_hid(ACPI_DEVICE_INFO *ad, const char * const *ids) 1368 { 1369 int i; 1370 1371 while (*ids) { 1372 if (ad->Valid & ACPI_VALID_HID) { 1373 if (pmatch(ad->HardwareId.String, *ids, NULL) == 2) 1374 return 1; 1375 } 1376 1377 if (ad->Valid & ACPI_VALID_CID) { 1378 for (i = 0; i < ad->CompatibleIdList.Count; i++) { 1379 if (pmatch(ad->CompatibleIdList.Ids[i].String, *ids, NULL) == 2) 1380 return 1; 1381 } 1382 } 1383 ids++; 1384 } 1385 1386 return 0; 1387 } 1388 1389 /* 1390 * acpi_wake_gpe_helper 1391 * 1392 * Set/unset GPE as both Runtime and Wake. 1393 */ 1394 static void 1395 acpi_wake_gpe_helper(ACPI_HANDLE handle, bool enable) 1396 { 1397 ACPI_OBJECT *elm, *obj; 1398 ACPI_INTEGER val; 1399 ACPI_BUFFER buf; 1400 ACPI_STATUS rv; 1401 1402 rv = acpi_eval_struct(handle, METHOD_NAME__PRW, &buf); 1403 1404 if (ACPI_FAILURE(rv)) 1405 return; 1406 1407 obj = buf.Pointer; 1408 1409 if (obj->Type != ACPI_TYPE_PACKAGE || obj->Package.Count < 2) 1410 goto out; 1411 1412 /* 1413 * As noted in ACPI 3.0 (section 7.2.10), the _PRW object is 1414 * a package in which the first element is either an integer 1415 * or again a package. In the latter case the package inside 1416 * the package element has two elements, a reference handle 1417 * and the GPE number. 1418 */ 1419 elm = &obj->Package.Elements[0]; 1420 1421 switch (elm->Type) { 1422 1423 case ACPI_TYPE_INTEGER: 1424 val = elm->Integer.Value; 1425 break; 1426 1427 case ACPI_TYPE_PACKAGE: 1428 1429 if (elm->Package.Count < 2) 1430 goto out; 1431 1432 if (elm->Package.Elements[0].Type != ACPI_TYPE_LOCAL_REFERENCE) 1433 goto out; 1434 1435 if (elm->Package.Elements[1].Type != ACPI_TYPE_INTEGER) 1436 goto out; 1437 1438 val = elm->Package.Elements[1].Integer.Value; 1439 break; 1440 1441 default: 1442 goto out; 1443 } 1444 1445 if (enable) { 1446 (void)AcpiSetGpeType(NULL, val, ACPI_GPE_TYPE_WAKE_RUN); 1447 (void)AcpiEnableGpe(NULL, val, ACPI_NOT_ISR); 1448 } else 1449 (void)AcpiDisableGpe(NULL, val, ACPI_NOT_ISR); 1450 1451 out: 1452 ACPI_FREE(buf.Pointer); 1453 } 1454 1455 /* 1456 * acpi_clear_wake_gpe 1457 * 1458 * Clear GPE as both Runtime and Wake. 1459 */ 1460 void 1461 acpi_clear_wake_gpe(ACPI_HANDLE handle) 1462 { 1463 acpi_wake_gpe_helper(handle, false); 1464 } 1465 1466 /* 1467 * acpi_set_wake_gpe 1468 * 1469 * Set GPE as both Runtime and Wake. 1470 */ 1471 void 1472 acpi_set_wake_gpe(ACPI_HANDLE handle) 1473 { 1474 acpi_wake_gpe_helper(handle, true); 1475 } 1476 1477 1478 /***************************************************************************** 1479 * ACPI sleep support. 1480 *****************************************************************************/ 1481 1482 static int 1483 is_available_state(struct acpi_softc *sc, int state) 1484 { 1485 UINT8 type_a, type_b; 1486 1487 return ACPI_SUCCESS(AcpiGetSleepTypeData((UINT8)state, 1488 &type_a, &type_b)); 1489 } 1490 1491 /* 1492 * acpi_enter_sleep_state: 1493 * 1494 * Enter to the specified sleep state. 1495 */ 1496 1497 ACPI_STATUS 1498 acpi_enter_sleep_state(struct acpi_softc *sc, int state) 1499 { 1500 int err; 1501 ACPI_STATUS ret = AE_OK; 1502 1503 if (state == acpi_sleepstate) 1504 return AE_OK; 1505 1506 aprint_normal_dev(sc->sc_dev, "entering state %d\n", state); 1507 1508 switch (state) { 1509 case ACPI_STATE_S0: 1510 break; 1511 case ACPI_STATE_S1: 1512 case ACPI_STATE_S2: 1513 case ACPI_STATE_S3: 1514 case ACPI_STATE_S4: 1515 if (!is_available_state(sc, state)) { 1516 aprint_error_dev(sc->sc_dev, 1517 "ACPI S%d not available on this platform\n", state); 1518 break; 1519 } 1520 1521 acpi_wakedev_commit(sc); 1522 1523 if (state != ACPI_STATE_S1 && !pmf_system_suspend(PMF_Q_NONE)) { 1524 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1525 break; 1526 } 1527 1528 ret = AcpiEnterSleepStatePrep(state); 1529 if (ACPI_FAILURE(ret)) { 1530 aprint_error_dev(sc->sc_dev, 1531 "failed preparing to sleep (%s)\n", 1532 AcpiFormatException(ret)); 1533 break; 1534 } 1535 1536 acpi_sleepstate = state; 1537 if (state == ACPI_STATE_S1) { 1538 /* just enter the state */ 1539 acpi_md_OsDisableInterrupt(); 1540 ret = AcpiEnterSleepState((UINT8)state); 1541 if (ACPI_FAILURE(ret)) 1542 aprint_error_dev(sc->sc_dev, 1543 "failed to enter sleep state S1: %s\n", 1544 AcpiFormatException(ret)); 1545 AcpiLeaveSleepState((UINT8)state); 1546 } else { 1547 err = acpi_md_sleep(state); 1548 if (state == ACPI_STATE_S4) 1549 AcpiEnable(); 1550 pmf_system_bus_resume(PMF_Q_NONE); 1551 AcpiLeaveSleepState((UINT8)state); 1552 pmf_system_resume(PMF_Q_NONE); 1553 } 1554 1555 break; 1556 case ACPI_STATE_S5: 1557 ret = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1558 if (ACPI_FAILURE(ret)) { 1559 aprint_error_dev(sc->sc_dev, 1560 "failed preparing to sleep (%s)\n", 1561 AcpiFormatException(ret)); 1562 break; 1563 } 1564 DELAY(1000000); 1565 acpi_sleepstate = state; 1566 acpi_md_OsDisableInterrupt(); 1567 AcpiEnterSleepState(ACPI_STATE_S5); 1568 aprint_error_dev(sc->sc_dev, "WARNING powerdown failed!\n"); 1569 break; 1570 } 1571 1572 acpi_sleepstate = ACPI_STATE_S0; 1573 return ret; 1574 } 1575 1576 #if defined(ACPI_ACTIVATE_DEV) 1577 /* XXX This very incomplete */ 1578 ACPI_STATUS 1579 acpi_allocate_resources(ACPI_HANDLE handle) 1580 { 1581 ACPI_BUFFER bufp, bufc, bufn; 1582 ACPI_RESOURCE *resp, *resc, *resn; 1583 ACPI_RESOURCE_IRQ *irq; 1584 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 1585 ACPI_STATUS rv; 1586 uint delta; 1587 1588 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 1589 if (ACPI_FAILURE(rv)) 1590 goto out; 1591 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 1592 if (ACPI_FAILURE(rv)) { 1593 goto out1; 1594 } 1595 1596 bufn.Length = 1000; 1597 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 1598 resp = bufp.Pointer; 1599 resc = bufc.Pointer; 1600 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 1601 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1602 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 1603 resp = ACPI_NEXT_RESOURCE(resp); 1604 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 1605 break; 1606 /* Found identical Id */ 1607 resn->Type = resc->Type; 1608 switch (resc->Type) { 1609 case ACPI_RESOURCE_TYPE_IRQ: 1610 memcpy(&resn->Data, &resp->Data, 1611 sizeof(ACPI_RESOURCE_IRQ)); 1612 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 1613 irq->Interrupts[0] = 1614 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 1615 Interrupts[irq->InterruptCount-1]; 1616 irq->InterruptCount = 1; 1617 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 1618 break; 1619 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 1620 memcpy(&resn->Data, &resp->Data, 1621 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 1622 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 1623 #if 0 1624 /* 1625 * XXX not duplicating the interrupt logic above 1626 * because its not clear what it accomplishes. 1627 */ 1628 xirq->Interrupts[0] = 1629 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 1630 Interrupts[irq->NumberOfInterrupts-1]; 1631 xirq->NumberOfInterrupts = 1; 1632 #endif 1633 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 1634 break; 1635 case ACPI_RESOURCE_TYPE_IO: 1636 memcpy(&resn->Data, &resp->Data, 1637 sizeof(ACPI_RESOURCE_IO)); 1638 resn->Length = resp->Length; 1639 break; 1640 default: 1641 printf("acpi_allocate_resources: res=%d\n", resc->Type); 1642 rv = AE_BAD_DATA; 1643 goto out2; 1644 } 1645 resc = ACPI_NEXT_RESOURCE(resc); 1646 resn = ACPI_NEXT_RESOURCE(resn); 1647 resp = ACPI_NEXT_RESOURCE(resp); 1648 delta = (UINT8 *)resn - (UINT8 *)bufn.Pointer; 1649 if (delta >= 1650 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 1651 bufn.Length *= 2; 1652 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 1653 M_ACPI, M_WAITOK); 1654 resn = (ACPI_RESOURCE *)((UINT8 *)bufn.Pointer + delta); 1655 } 1656 } 1657 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1658 printf("acpi_allocate_resources: resc not exhausted\n"); 1659 rv = AE_BAD_DATA; 1660 goto out3; 1661 } 1662 1663 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 1664 rv = AcpiSetCurrentResources(handle, &bufn); 1665 if (ACPI_FAILURE(rv)) { 1666 printf("acpi_allocate_resources: AcpiSetCurrentResources %s\n", 1667 AcpiFormatException(rv)); 1668 } 1669 1670 out3: 1671 free(bufn.Pointer, M_ACPI); 1672 out2: 1673 ACPI_FREE(bufc.Pointer); 1674 out1: 1675 ACPI_FREE(bufp.Pointer); 1676 out: 1677 return rv; 1678 } 1679 #endif /* ACPI_ACTIVATE_DEV */ 1680 1681 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1682 { 1683 const struct sysctlnode *node; 1684 const struct sysctlnode *ssnode; 1685 1686 if (sysctl_createv(clog, 0, NULL, NULL, 1687 CTLFLAG_PERMANENT, 1688 CTLTYPE_NODE, "hw", NULL, 1689 NULL, 0, NULL, 0, 1690 CTL_HW, CTL_EOL) != 0) 1691 return; 1692 1693 if (sysctl_createv(clog, 0, NULL, &node, 1694 CTLFLAG_PERMANENT, 1695 CTLTYPE_NODE, "acpi", NULL, 1696 NULL, 0, NULL, 0, 1697 CTL_HW, CTL_CREATE, CTL_EOL) != 0) 1698 return; 1699 1700 sysctl_createv(NULL, 0, NULL, NULL, CTLFLAG_READONLY, 1701 CTLTYPE_QUAD, "root", 1702 SYSCTL_DESCR("ACPI root pointer"), 1703 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1704 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL); 1705 sysctl_createv(NULL, 0, NULL, NULL, CTLFLAG_READONLY, 1706 CTLTYPE_STRING, "supported_states", 1707 SYSCTL_DESCR("Supported ACPI system states"), 1708 NULL, 0, acpi_supported_states, 0, 1709 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL); 1710 1711 /* ACPI sleepstate sysctl */ 1712 if (sysctl_createv(NULL, 0, NULL, &node, 1713 CTLFLAG_PERMANENT, 1714 CTLTYPE_NODE, "machdep", NULL, 1715 NULL, 0, NULL, 0, CTL_MACHDEP, CTL_EOL) != 0) 1716 return; 1717 if (sysctl_createv(NULL, 0, &node, &ssnode, 1718 CTLFLAG_READWRITE, CTLTYPE_INT, "sleep_state", 1719 NULL, sysctl_hw_acpi_sleepstate, 0, NULL, 0, CTL_CREATE, 1720 CTL_EOL) != 0) 1721 return; 1722 } 1723 1724 static int 1725 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1726 { 1727 int error, t; 1728 struct sysctlnode node; 1729 1730 node = *rnode; 1731 t = acpi_sleepstate; 1732 node.sysctl_data = &t; 1733 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1734 if (error || newp == NULL) 1735 return error; 1736 1737 if (acpi_softc == NULL) 1738 return ENOSYS; 1739 1740 acpi_enter_sleep_state(acpi_softc, t); 1741 1742 return 0; 1743 } 1744 1745 static ACPI_TABLE_HEADER * 1746 acpi_map_rsdt(void) 1747 { 1748 ACPI_PHYSICAL_ADDRESS paddr; 1749 ACPI_TABLE_RSDP *rsdp; 1750 1751 paddr = AcpiOsGetRootPointer(); 1752 if (paddr == 0) { 1753 printf("ACPI: couldn't get root pointer\n"); 1754 return NULL; 1755 } 1756 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1757 if (rsdp == NULL) { 1758 printf("ACPI: couldn't map RSDP\n"); 1759 return NULL; 1760 } 1761 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1762 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress; 1763 else 1764 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress; 1765 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1766 1767 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1768 } 1769 1770 static void 1771 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1772 { 1773 if (rsdt == NULL) 1774 return; 1775 1776 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1777 } 1778
Indexes created Tue Sep 23 14:10:03 GMT 2025