acpi.c revision 1.147
1 /* $NetBSD: acpi.c,v 1.147 2010/01/18 18:49:27 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 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 1.147 2010/01/18 18:49:27 jruoho 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, pmf_qual_t); 205 static bool acpi_resume(device_t, 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 } 550 551 static int 552 acpi_detach(device_t self, int flags) 553 { 554 int rc; 555 556 #ifdef ACPI_DEBUGGER 557 if (acpi_dbgr & ACPI_DBGR_RUNNING) 558 acpi_osd_debugger(); 559 #endif 560 561 if ((rc = config_detach_children(self, flags)) != 0) 562 return rc; 563 564 #ifdef ACPI_DEBUGGER 565 if (acpi_dbgr & ACPI_DBGR_PROBE) 566 acpi_osd_debugger(); 567 #endif 568 569 if ((rc = acpitimer_detach()) != 0) 570 return rc; 571 572 #if 0 573 /* 574 * Bring ACPI on-line. 575 */ 576 #ifdef ACPI_DEBUGGER 577 if (acpi_dbgr & ACPI_DBGR_ENABLE) 578 acpi_osd_debugger(); 579 #endif 580 581 #define ACPI_ENABLE_PHASE1 \ 582 (ACPI_NO_HANDLER_INIT | ACPI_NO_EVENT_INIT) 583 #define ACPI_ENABLE_PHASE2 \ 584 (ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE | \ 585 ACPI_NO_ADDRESS_SPACE_INIT) 586 587 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE1); 588 if (ACPI_FAILURE(rv)) { 589 aprint_error_dev(self, "unable to enable ACPI: %s\n", 590 AcpiFormatException(rv)); 591 return; 592 } 593 594 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE2); 595 if (ACPI_FAILURE(rv)) { 596 aprint_error_dev(self, "unable to enable ACPI: %s\n", 597 AcpiFormatException(rv)); 598 return; 599 } 600 601 /* Early EC handler initialization if ECDT table is available. */ 602 config_found_ia(self, "acpiecdtbus", NULL, NULL); 603 604 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 605 if (ACPI_FAILURE(rv)) { 606 aprint_error_dev(self, 607 "unable to initialize ACPI objects: %s\n", 608 AcpiFormatException(rv)); 609 return; 610 } 611 acpi_active = 1; 612 613 acpi_enable_fixed_events(sc); 614 #endif 615 616 pmf_device_deregister(self); 617 618 #if 0 619 sysmon_power_settype("acpi"); 620 #endif 621 acpi_softc = NULL; 622 623 return 0; 624 } 625 626 static bool 627 acpi_suspend(device_t dv, pmf_qual_t qual) 628 { 629 acpi_suspended = 1; 630 return true; 631 } 632 633 static bool 634 acpi_resume(device_t dv, pmf_qual_t qual) 635 { 636 acpi_suspended = 0; 637 return true; 638 } 639 640 #if 0 641 /* 642 * acpi_disable: 643 * 644 * Disable ACPI. 645 */ 646 static ACPI_STATUS 647 acpi_disable(struct acpi_softc *sc) 648 { 649 ACPI_STATUS rv = AE_OK; 650 651 if (acpi_active) { 652 rv = AcpiDisable(); 653 if (ACPI_SUCCESS(rv)) 654 acpi_active = 0; 655 } 656 return rv; 657 } 658 #endif 659 660 struct acpi_make_devnode_state { 661 struct acpi_softc *softc; 662 struct acpi_scope *scope; 663 }; 664 665 /* 666 * acpi_build_tree: 667 * 668 * Scan relevant portions of the ACPI namespace and attach 669 * child devices. 670 */ 671 static void 672 acpi_build_tree(struct acpi_softc *sc) 673 { 674 static const char *scopes[] = { 675 "\\_PR_", /* ACPI 1.0 processor namespace */ 676 "\\_SB_", /* system bus namespace */ 677 "\\_SI_", /* system indicator namespace */ 678 "\\_TZ_", /* ACPI 1.0 thermal zone namespace */ 679 NULL, 680 }; 681 struct acpi_make_devnode_state state; 682 struct acpi_scope *as; 683 ACPI_HANDLE parent; 684 ACPI_STATUS rv; 685 int i; 686 687 TAILQ_INIT(&sc->sc_scopes); 688 689 state.softc = sc; 690 691 /* 692 * Scan the namespace and build our tree. 693 */ 694 for (i = 0; scopes[i] != NULL; i++) { 695 as = malloc(sizeof(*as), M_ACPI, M_WAITOK); 696 as->as_name = scopes[i]; 697 TAILQ_INIT(&as->as_devnodes); 698 699 TAILQ_INSERT_TAIL(&sc->sc_scopes, as, as_list); 700 701 state.scope = as; 702 703 rv = AcpiGetHandle(ACPI_ROOT_OBJECT, scopes[i], 704 &parent); 705 if (ACPI_SUCCESS(rv)) { 706 AcpiWalkNamespace(ACPI_TYPE_ANY, parent, 100, 707 acpi_make_devnode, &state, NULL); 708 } 709 } 710 711 acpi_rescan1(sc, NULL, NULL); 712 713 acpi_wakedev_scan(sc); 714 715 acpi_pcidev_scan(sc); 716 } 717 718 static int 719 acpi_rescan(device_t self, const char *ifattr, const int *locators) 720 { 721 struct acpi_softc *sc = device_private(self); 722 723 acpi_rescan1(sc, ifattr, locators); 724 return 0; 725 } 726 727 static void 728 acpi_rescan1(struct acpi_softc *sc, const char *ifattr, const int *locators) 729 { 730 if (ifattr_match(ifattr, "acpinodebus")) 731 acpi_rescan_nodes(sc); 732 733 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) { 734 sc->sc_apmbus = config_found_ia(sc->sc_dev, "acpiapmbus", NULL, 735 NULL); 736 } 737 } 738 739 static void 740 acpi_rescan_nodes(struct acpi_softc *sc) 741 { 742 struct acpi_scope *as; 743 744 TAILQ_FOREACH(as, &sc->sc_scopes, as_list) { 745 struct acpi_devnode *ad; 746 747 /* Now, for this namespace, try to attach the devices. */ 748 TAILQ_FOREACH(ad, &as->as_devnodes, ad_list) { 749 struct acpi_attach_args aa; 750 751 if (ad->ad_device != NULL) 752 continue; 753 754 aa.aa_node = ad; 755 aa.aa_iot = sc->sc_iot; 756 aa.aa_memt = sc->sc_memt; 757 aa.aa_pc = sc->sc_pc; 758 aa.aa_pciflags = sc->sc_pciflags; 759 aa.aa_ic = sc->sc_ic; 760 761 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) { 762 /* 763 * XXX We only attach devices which are: 764 * 765 * - present 766 * - enabled 767 * - functioning properly 768 * 769 * However, if enabled, it's decoding resources, 770 * so we should claim them, if possible. 771 * Requires changes to bus_space(9). 772 */ 773 if ((ad->ad_devinfo->Valid & ACPI_VALID_STA) == 774 ACPI_VALID_STA && 775 (ad->ad_devinfo->CurrentStatus & 776 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED| 777 ACPI_STA_DEV_OK)) != 778 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED| 779 ACPI_STA_DEV_OK)) 780 continue; 781 } 782 783 /* 784 * XXX Same problem as above... 785 * 786 * Do this check only for devices, as e.g. 787 * a Thermal Zone doesn't have a HID. 788 */ 789 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE && 790 (ad->ad_devinfo->Valid & ACPI_VALID_HID) == 0) 791 continue; 792 793 /* 794 * Handled internally 795 */ 796 if (ad->ad_devinfo->Type == ACPI_TYPE_PROCESSOR || 797 ad->ad_devinfo->Type == ACPI_TYPE_POWER) 798 continue; 799 800 /* 801 * Skip ignored HIDs 802 */ 803 if (acpi_match_hid(ad->ad_devinfo, acpi_ignored_ids)) 804 continue; 805 806 ad->ad_device = config_found_ia(sc->sc_dev, 807 "acpinodebus", &aa, acpi_print); 808 } 809 } 810 } 811 812 #ifdef ACPI_ACTIVATE_DEV 813 static void 814 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 815 { 816 ACPI_STATUS rv; 817 ACPI_DEVICE_INFO *newdi; 818 819 #ifdef ACPI_DEBUG 820 aprint_normal("acpi_activate_device: %s, old status=%x\n", 821 (*di)->HardwareId.Value, (*di)->CurrentStatus); 822 #endif 823 824 rv = acpi_allocate_resources(handle); 825 if (ACPI_FAILURE(rv)) { 826 aprint_error("acpi: activate failed for %s\n", 827 (*di)->HardwareId.String); 828 } else { 829 aprint_verbose("acpi: activated %s\n", 830 (*di)->HardwareId.String); 831 } 832 833 (void)AcpiGetObjectInfo(handle, &newdi); 834 ACPI_FREE(*di); 835 *di = newdi; 836 837 #ifdef ACPI_DEBUG 838 aprint_normal("acpi_activate_device: %s, new status=%x\n", 839 (*di)->HardwareId.Value, (*di)->CurrentStatus); 840 #endif 841 } 842 #endif /* ACPI_ACTIVATE_DEV */ 843 844 /* 845 * acpi_make_devnode: 846 * 847 * Make an ACPI devnode. 848 */ 849 static ACPI_STATUS 850 acpi_make_devnode(ACPI_HANDLE handle, UINT32 level, void *context, 851 void **status) 852 { 853 struct acpi_make_devnode_state *state = context; 854 #if defined(ACPI_DEBUG) || defined(ACPI_EXTRA_DEBUG) 855 struct acpi_softc *sc = state->softc; 856 #endif 857 struct acpi_scope *as = state->scope; 858 struct acpi_devnode *ad; 859 ACPI_OBJECT_TYPE type; 860 ACPI_DEVICE_INFO *devinfo; 861 ACPI_STATUS rv; 862 ACPI_NAME_UNION *anu; 863 int i, clear = 0; 864 865 rv = AcpiGetType(handle, &type); 866 if (ACPI_SUCCESS(rv)) { 867 rv = AcpiGetObjectInfo(handle, &devinfo); 868 if (ACPI_FAILURE(rv)) { 869 #ifdef ACPI_DEBUG 870 aprint_normal_dev(sc->sc_dev, 871 "AcpiGetObjectInfo failed: %s\n", 872 AcpiFormatException(rv)); 873 #endif 874 goto out; /* XXX why return OK */ 875 } 876 877 switch (type) { 878 case ACPI_TYPE_DEVICE: 879 #ifdef ACPI_ACTIVATE_DEV 880 if ((devinfo->Valid & (ACPI_VALID_STA|ACPI_VALID_HID)) == 881 (ACPI_VALID_STA|ACPI_VALID_HID) && 882 (devinfo->CurrentStatus & 883 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED)) == 884 ACPI_STA_DEV_PRESENT) 885 acpi_activate_device(handle, &devinfo); 886 887 /* FALLTHROUGH */ 888 #endif 889 890 case ACPI_TYPE_PROCESSOR: 891 case ACPI_TYPE_THERMAL: 892 case ACPI_TYPE_POWER: 893 ad = malloc(sizeof(*ad), M_ACPI, M_NOWAIT|M_ZERO); 894 if (ad == NULL) 895 return AE_NO_MEMORY; 896 897 ad->ad_devinfo = devinfo; 898 ad->ad_handle = handle; 899 ad->ad_level = level; 900 ad->ad_scope = as; 901 ad->ad_type = type; 902 903 anu = (ACPI_NAME_UNION *)&devinfo->Name; 904 ad->ad_name[4] = '\0'; 905 for (i = 3, clear = 0; i >= 0; i--) { 906 if (!clear && anu->Ascii[i] == '_') 907 ad->ad_name[i] = '\0'; 908 else { 909 ad->ad_name[i] = anu->Ascii[i]; 910 clear = 1; 911 } 912 } 913 if (ad->ad_name[0] == '\0') 914 ad->ad_name[0] = '_'; 915 916 TAILQ_INSERT_TAIL(&as->as_devnodes, ad, ad_list); 917 918 if (type == ACPI_TYPE_DEVICE && 919 (ad->ad_devinfo->Valid & ACPI_VALID_HID) == 0) 920 goto out; 921 922 #ifdef ACPI_EXTRA_DEBUG 923 aprint_normal_dev(sc->sc_dev, 924 "HID %s found in scope %s level %d\n", 925 ad->ad_devinfo->HardwareId.String, 926 as->as_name, ad->ad_level); 927 if (ad->ad_devinfo->Valid & ACPI_VALID_UID) 928 aprint_normal(" UID %s\n", 929 ad->ad_devinfo->UniqueId.String); 930 if (ad->ad_devinfo->Valid & ACPI_VALID_ADR) 931 aprint_normal(" ADR 0x%016" PRIx64 "\n", 932 ad->ad_devinfo->Address); 933 if (ad->ad_devinfo->Valid & ACPI_VALID_STA) 934 aprint_normal(" STA 0x%08x\n", 935 ad->ad_devinfo->CurrentStatus); 936 #endif 937 } 938 } 939 out: 940 return AE_OK; 941 } 942 943 /* 944 * acpi_print: 945 * 946 * Autoconfiguration print routine for ACPI node bus. 947 */ 948 static int 949 acpi_print(void *aux, const char *pnp) 950 { 951 struct acpi_attach_args *aa = aux; 952 ACPI_STATUS rv; 953 954 if (pnp) { 955 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 956 char *pnpstr = 957 aa->aa_node->ad_devinfo->HardwareId.String; 958 ACPI_BUFFER buf; 959 960 aprint_normal("%s (%s) ", aa->aa_node->ad_name, 961 pnpstr); 962 963 rv = acpi_eval_struct(aa->aa_node->ad_handle, 964 "_STR", &buf); 965 if (ACPI_SUCCESS(rv)) { 966 ACPI_OBJECT *obj = buf.Pointer; 967 switch (obj->Type) { 968 case ACPI_TYPE_STRING: 969 aprint_normal("[%s] ", obj->String.Pointer); 970 break; 971 case ACPI_TYPE_BUFFER: 972 aprint_normal("buffer %p ", obj->Buffer.Pointer); 973 break; 974 default: 975 aprint_normal("type %d ",obj->Type); 976 break; 977 } 978 ACPI_FREE(buf.Pointer); 979 } 980 #ifdef ACPIVERBOSE 981 else { 982 int i; 983 984 for (i = 0; i < __arraycount(acpi_knowndevs); 985 i++) { 986 if (strcmp(acpi_knowndevs[i].pnp, 987 pnpstr) == 0) { 988 aprint_normal("[%s] ", 989 acpi_knowndevs[i].str); 990 } 991 } 992 } 993 994 #endif 995 aprint_normal("at %s", pnp); 996 } else if (aa->aa_node->ad_devinfo->Type != ACPI_TYPE_DEVICE) { 997 aprint_normal("%s (ACPI Object Type '%s' " 998 "[0x%02x]) ", aa->aa_node->ad_name, 999 AcpiUtGetTypeName(aa->aa_node->ad_devinfo->Type), 1000 aa->aa_node->ad_devinfo->Type); 1001 aprint_normal("at %s", pnp); 1002 } else 1003 return 0; 1004 } else { 1005 aprint_normal(" (%s", aa->aa_node->ad_name); 1006 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1007 aprint_normal(", %s", aa->aa_node->ad_devinfo->HardwareId.String); 1008 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_UID) { 1009 const char *uid; 1010 1011 uid = aa->aa_node->ad_devinfo->UniqueId.String; 1012 if (uid[0] == '\0') 1013 uid = "<null>"; 1014 aprint_normal("-%s", uid); 1015 } 1016 } 1017 aprint_normal(")"); 1018 } 1019 1020 return UNCONF; 1021 } 1022 1023 /***************************************************************************** 1024 * ACPI fixed-hardware feature handlers 1025 *****************************************************************************/ 1026 1027 static UINT32 acpi_fixed_button_handler(void *); 1028 static void acpi_fixed_button_pressed(void *); 1029 1030 /* 1031 * acpi_enable_fixed_events: 1032 * 1033 * Enable any fixed-hardware feature handlers. 1034 */ 1035 static void 1036 acpi_enable_fixed_events(struct acpi_softc *sc) 1037 { 1038 static int beenhere; 1039 ACPI_STATUS rv; 1040 1041 KASSERT(beenhere == 0); 1042 beenhere = 1; 1043 1044 /* 1045 * Check for fixed-hardware buttons. 1046 */ 1047 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) { 1048 aprint_verbose_dev(sc->sc_dev, 1049 "fixed-feature power button present\n"); 1050 sc->sc_smpsw_power.smpsw_name = device_xname(sc->sc_dev); 1051 sc->sc_smpsw_power.smpsw_type = PSWITCH_TYPE_POWER; 1052 if (sysmon_pswitch_register(&sc->sc_smpsw_power) != 0) { 1053 aprint_error_dev(sc->sc_dev, 1054 "unable to register fixed power " 1055 "button with sysmon\n"); 1056 } else { 1057 rv = AcpiInstallFixedEventHandler( 1058 ACPI_EVENT_POWER_BUTTON, 1059 acpi_fixed_button_handler, &sc->sc_smpsw_power); 1060 if (ACPI_FAILURE(rv)) { 1061 aprint_error_dev(sc->sc_dev, 1062 "unable to install handler " 1063 "for fixed power button: %s\n", 1064 AcpiFormatException(rv)); 1065 } 1066 } 1067 } 1068 1069 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) { 1070 aprint_verbose_dev(sc->sc_dev, 1071 "fixed-feature sleep button present\n"); 1072 sc->sc_smpsw_sleep.smpsw_name = device_xname(sc->sc_dev); 1073 sc->sc_smpsw_sleep.smpsw_type = PSWITCH_TYPE_SLEEP; 1074 if (sysmon_pswitch_register(&sc->sc_smpsw_power) != 0) { 1075 aprint_error_dev(sc->sc_dev, 1076 "unable to register fixed sleep " 1077 "button with sysmon\n"); 1078 } else { 1079 rv = AcpiInstallFixedEventHandler( 1080 ACPI_EVENT_SLEEP_BUTTON, 1081 acpi_fixed_button_handler, &sc->sc_smpsw_sleep); 1082 if (ACPI_FAILURE(rv)) { 1083 aprint_error_dev(sc->sc_dev, 1084 "unable to install handler " 1085 "for fixed sleep button: %s\n", 1086 AcpiFormatException(rv)); 1087 } 1088 } 1089 } 1090 } 1091 1092 /* 1093 * acpi_fixed_button_handler: 1094 * 1095 * Event handler for the fixed buttons. 1096 */ 1097 static UINT32 1098 acpi_fixed_button_handler(void *context) 1099 { 1100 struct sysmon_pswitch *smpsw = context; 1101 ACPI_STATUS rv; 1102 1103 #ifdef ACPI_BUT_DEBUG 1104 printf("%s: fixed button handler\n", smpsw->smpsw_name); 1105 #endif 1106 1107 rv = AcpiOsExecute(OSL_NOTIFY_HANDLER, 1108 acpi_fixed_button_pressed, smpsw); 1109 if (ACPI_FAILURE(rv)) 1110 printf("%s: WARNING: unable to queue fixed button pressed " 1111 "callback: %s\n", smpsw->smpsw_name, 1112 AcpiFormatException(rv)); 1113 1114 return ACPI_INTERRUPT_HANDLED; 1115 } 1116 1117 /* 1118 * acpi_fixed_button_pressed: 1119 * 1120 * Deal with a fixed button being pressed. 1121 */ 1122 static void 1123 acpi_fixed_button_pressed(void *context) 1124 { 1125 struct sysmon_pswitch *smpsw = context; 1126 1127 #ifdef ACPI_BUT_DEBUG 1128 printf("%s: fixed button pressed, calling sysmon\n", 1129 smpsw->smpsw_name); 1130 #endif 1131 1132 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1133 } 1134 1135 /***************************************************************************** 1136 * ACPI utility routines. 1137 *****************************************************************************/ 1138 1139 /* 1140 * acpi_eval_integer: 1141 * 1142 * Evaluate an integer object. 1143 */ 1144 ACPI_STATUS 1145 acpi_eval_integer(ACPI_HANDLE handle, const char *path, ACPI_INTEGER *valp) 1146 { 1147 ACPI_STATUS rv; 1148 ACPI_BUFFER buf; 1149 ACPI_OBJECT param; 1150 1151 if (handle == NULL) 1152 handle = ACPI_ROOT_OBJECT; 1153 1154 buf.Pointer = ¶m; 1155 buf.Length = sizeof(param); 1156 1157 rv = AcpiEvaluateObjectTyped(handle, path, NULL, &buf, 1158 ACPI_TYPE_INTEGER); 1159 if (ACPI_SUCCESS(rv)) 1160 *valp = param.Integer.Value; 1161 1162 return rv; 1163 } 1164 1165 /* 1166 * acpi_eval_set_integer: 1167 * 1168 * Evaluate an integer object with a single integer input parameter. 1169 */ 1170 ACPI_STATUS 1171 acpi_eval_set_integer(ACPI_HANDLE handle, const char *path, ACPI_INTEGER arg) 1172 { 1173 ACPI_OBJECT param_arg; 1174 ACPI_OBJECT_LIST param_args; 1175 1176 if (handle == NULL) 1177 handle = ACPI_ROOT_OBJECT; 1178 1179 param_arg.Type = ACPI_TYPE_INTEGER; 1180 param_arg.Integer.Value = arg; 1181 1182 param_args.Count = 1; 1183 param_args.Pointer = ¶m_arg; 1184 1185 return AcpiEvaluateObject(handle, path, ¶m_args, NULL); 1186 } 1187 1188 /* 1189 * acpi_eval_string: 1190 * 1191 * Evaluate a (Unicode) string object. 1192 */ 1193 ACPI_STATUS 1194 acpi_eval_string(ACPI_HANDLE handle, const char *path, char **stringp) 1195 { 1196 ACPI_OBJECT *obj; 1197 ACPI_BUFFER buf; 1198 ACPI_STATUS rv; 1199 1200 rv = acpi_eval_struct(handle, path, &buf); 1201 1202 if (ACPI_FAILURE(rv)) 1203 return rv; 1204 1205 obj = buf.Pointer; 1206 1207 if (obj->Type != ACPI_TYPE_STRING) { 1208 rv = AE_TYPE; 1209 goto out; 1210 } 1211 1212 if (obj->String.Length == 0) { 1213 rv = AE_BAD_DATA; 1214 goto out; 1215 } 1216 1217 *stringp = ACPI_ALLOCATE(obj->String.Length + 1); 1218 1219 if (*stringp == NULL) { 1220 rv = AE_NO_MEMORY; 1221 goto out; 1222 } 1223 1224 (void)memcpy(*stringp, obj->String.Pointer, obj->String.Length); 1225 1226 (*stringp)[obj->String.Length] = '\0'; 1227 1228 out: 1229 ACPI_FREE(buf.Pointer); 1230 1231 return rv; 1232 } 1233 1234 /* 1235 * acpi_eval_struct: 1236 * 1237 * Evaluate a more complex structure. 1238 * Caller must free buf.Pointer by ACPI_FREE(). 1239 */ 1240 ACPI_STATUS 1241 acpi_eval_struct(ACPI_HANDLE handle, const char *path, ACPI_BUFFER *bufp) 1242 { 1243 ACPI_STATUS rv; 1244 1245 if (handle == NULL) 1246 handle = ACPI_ROOT_OBJECT; 1247 1248 bufp->Pointer = NULL; 1249 bufp->Length = ACPI_ALLOCATE_LOCAL_BUFFER; 1250 1251 rv = AcpiEvaluateObject(handle, path, NULL, bufp); 1252 1253 return rv; 1254 } 1255 1256 /* 1257 * acpi_eval_reference_handle: 1258 * 1259 * Evaluate a reference handle from an element in a package. 1260 */ 1261 ACPI_STATUS 1262 acpi_eval_reference_handle(ACPI_OBJECT *elm, ACPI_HANDLE *handle) 1263 { 1264 1265 if (elm == NULL || handle == NULL) 1266 return AE_BAD_PARAMETER; 1267 1268 switch (elm->Type) { 1269 1270 case ACPI_TYPE_ANY: 1271 case ACPI_TYPE_LOCAL_REFERENCE: 1272 1273 if (elm->Reference.Handle == NULL) 1274 return AE_NULL_ENTRY; 1275 1276 *handle = elm->Reference.Handle; 1277 1278 return AE_OK; 1279 1280 case ACPI_TYPE_STRING: 1281 return AcpiGetHandle(NULL, elm->String.Pointer, handle); 1282 1283 default: 1284 return AE_TYPE; 1285 } 1286 } 1287 1288 /* 1289 * acpi_foreach_package_object: 1290 * 1291 * Iterate over all objects in a package, and pass them all 1292 * to a function. If the called function returns non AE_OK, the 1293 * iteration is stopped and that value is returned. 1294 */ 1295 ACPI_STATUS 1296 acpi_foreach_package_object(ACPI_OBJECT *pkg, 1297 ACPI_STATUS (*func)(ACPI_OBJECT *, void *), 1298 void *arg) 1299 { 1300 ACPI_STATUS rv = AE_OK; 1301 int i; 1302 1303 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE) 1304 return AE_BAD_PARAMETER; 1305 1306 for (i = 0; i < pkg->Package.Count; i++) { 1307 rv = (*func)(&pkg->Package.Elements[i], arg); 1308 if (ACPI_FAILURE(rv)) 1309 break; 1310 } 1311 1312 return rv; 1313 } 1314 1315 /* 1316 * acpi_name: 1317 * 1318 * Return a complete pathname from a handle. 1319 * 1320 * Note that the function uses static data storage; 1321 * if the data is needed for future use, it should be 1322 * copied before any subsequent calls overwrite it. 1323 */ 1324 const char * 1325 acpi_name(ACPI_HANDLE handle) 1326 { 1327 static char buffer[80]; 1328 ACPI_BUFFER buf; 1329 ACPI_STATUS rv; 1330 1331 buf.Length = sizeof(buffer); 1332 buf.Pointer = buffer; 1333 1334 rv = AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf); 1335 if (ACPI_FAILURE(rv)) 1336 return "(unknown acpi path)"; 1337 return buffer; 1338 } 1339 1340 /* 1341 * acpi_get: 1342 * 1343 * Fetch data info the specified (empty) ACPI buffer. 1344 * Caller must free buf.Pointer by ACPI_FREE(). 1345 */ 1346 ACPI_STATUS 1347 acpi_get(ACPI_HANDLE handle, ACPI_BUFFER *buf, 1348 ACPI_STATUS (*getit)(ACPI_HANDLE, ACPI_BUFFER *)) 1349 { 1350 buf->Pointer = NULL; 1351 buf->Length = ACPI_ALLOCATE_LOCAL_BUFFER; 1352 1353 return (*getit)(handle, buf); 1354 } 1355 1356 1357 /* 1358 * acpi_match_hid 1359 * 1360 * Match given ids against _HID and _CIDs. 1361 */ 1362 int 1363 acpi_match_hid(ACPI_DEVICE_INFO *ad, const char * const *ids) 1364 { 1365 int i; 1366 1367 while (*ids) { 1368 if (ad->Valid & ACPI_VALID_HID) { 1369 if (pmatch(ad->HardwareId.String, *ids, NULL) == 2) 1370 return 1; 1371 } 1372 1373 if (ad->Valid & ACPI_VALID_CID) { 1374 for (i = 0; i < ad->CompatibleIdList.Count; i++) { 1375 if (pmatch(ad->CompatibleIdList.Ids[i].String, *ids, NULL) == 2) 1376 return 1; 1377 } 1378 } 1379 ids++; 1380 } 1381 1382 return 0; 1383 } 1384 1385 /* 1386 * acpi_wake_gpe_helper 1387 * 1388 * Set/unset GPE as both Runtime and Wake. 1389 */ 1390 static void 1391 acpi_wake_gpe_helper(ACPI_HANDLE handle, bool enable) 1392 { 1393 ACPI_OBJECT *elm, *obj; 1394 ACPI_INTEGER val; 1395 ACPI_BUFFER buf; 1396 ACPI_STATUS rv; 1397 1398 rv = acpi_eval_struct(handle, METHOD_NAME__PRW, &buf); 1399 1400 if (ACPI_FAILURE(rv)) 1401 return; 1402 1403 obj = buf.Pointer; 1404 1405 if (obj->Type != ACPI_TYPE_PACKAGE || obj->Package.Count < 2) 1406 goto out; 1407 1408 /* 1409 * As noted in ACPI 3.0 (section 7.2.10), the _PRW object is 1410 * a package in which the first element is either an integer 1411 * or again a package. In the latter case the package inside 1412 * the package element has two elements, a reference handle 1413 * and the GPE number. 1414 */ 1415 elm = &obj->Package.Elements[0]; 1416 1417 switch (elm->Type) { 1418 1419 case ACPI_TYPE_INTEGER: 1420 val = elm->Integer.Value; 1421 break; 1422 1423 case ACPI_TYPE_PACKAGE: 1424 1425 if (elm->Package.Count < 2) 1426 goto out; 1427 1428 if (elm->Package.Elements[0].Type != ACPI_TYPE_LOCAL_REFERENCE) 1429 goto out; 1430 1431 if (elm->Package.Elements[1].Type != ACPI_TYPE_INTEGER) 1432 goto out; 1433 1434 val = elm->Package.Elements[1].Integer.Value; 1435 break; 1436 1437 default: 1438 goto out; 1439 } 1440 1441 if (enable) { 1442 (void)AcpiSetGpeType(NULL, val, ACPI_GPE_TYPE_WAKE_RUN); 1443 (void)AcpiEnableGpe(NULL, val, ACPI_NOT_ISR); 1444 } else 1445 (void)AcpiDisableGpe(NULL, val, ACPI_NOT_ISR); 1446 1447 out: 1448 ACPI_FREE(buf.Pointer); 1449 } 1450 1451 /* 1452 * acpi_clear_wake_gpe 1453 * 1454 * Clear GPE as both Runtime and Wake. 1455 */ 1456 void 1457 acpi_clear_wake_gpe(ACPI_HANDLE handle) 1458 { 1459 acpi_wake_gpe_helper(handle, false); 1460 } 1461 1462 /* 1463 * acpi_set_wake_gpe 1464 * 1465 * Set GPE as both Runtime and Wake. 1466 */ 1467 void 1468 acpi_set_wake_gpe(ACPI_HANDLE handle) 1469 { 1470 acpi_wake_gpe_helper(handle, true); 1471 } 1472 1473 1474 /***************************************************************************** 1475 * ACPI sleep support. 1476 *****************************************************************************/ 1477 1478 static int 1479 is_available_state(struct acpi_softc *sc, int state) 1480 { 1481 UINT8 type_a, type_b; 1482 1483 return ACPI_SUCCESS(AcpiGetSleepTypeData((UINT8)state, 1484 &type_a, &type_b)); 1485 } 1486 1487 /* 1488 * acpi_enter_sleep_state: 1489 * 1490 * Enter to the specified sleep state. 1491 */ 1492 1493 ACPI_STATUS 1494 acpi_enter_sleep_state(struct acpi_softc *sc, int state) 1495 { 1496 int err; 1497 ACPI_STATUS ret = AE_OK; 1498 1499 if (state == acpi_sleepstate) 1500 return AE_OK; 1501 1502 aprint_normal_dev(sc->sc_dev, "entering state %d\n", state); 1503 1504 switch (state) { 1505 case ACPI_STATE_S0: 1506 break; 1507 case ACPI_STATE_S1: 1508 case ACPI_STATE_S2: 1509 case ACPI_STATE_S3: 1510 case ACPI_STATE_S4: 1511 if (!is_available_state(sc, state)) { 1512 aprint_error_dev(sc->sc_dev, 1513 "ACPI S%d not available on this platform\n", state); 1514 break; 1515 } 1516 1517 acpi_wakedev_commit(sc); 1518 1519 if (state != ACPI_STATE_S1 && !pmf_system_suspend(PMF_Q_NONE)) { 1520 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1521 break; 1522 } 1523 1524 ret = AcpiEnterSleepStatePrep(state); 1525 if (ACPI_FAILURE(ret)) { 1526 aprint_error_dev(sc->sc_dev, 1527 "failed preparing to sleep (%s)\n", 1528 AcpiFormatException(ret)); 1529 break; 1530 } 1531 1532 acpi_sleepstate = state; 1533 if (state == ACPI_STATE_S1) { 1534 /* just enter the state */ 1535 acpi_md_OsDisableInterrupt(); 1536 ret = AcpiEnterSleepState((UINT8)state); 1537 if (ACPI_FAILURE(ret)) 1538 aprint_error_dev(sc->sc_dev, 1539 "failed to enter sleep state S1: %s\n", 1540 AcpiFormatException(ret)); 1541 AcpiLeaveSleepState((UINT8)state); 1542 } else { 1543 err = acpi_md_sleep(state); 1544 if (state == ACPI_STATE_S4) 1545 AcpiEnable(); 1546 pmf_system_bus_resume(PMF_Q_NONE); 1547 AcpiLeaveSleepState((UINT8)state); 1548 pmf_system_resume(PMF_Q_NONE); 1549 } 1550 1551 break; 1552 case ACPI_STATE_S5: 1553 ret = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1554 if (ACPI_FAILURE(ret)) { 1555 aprint_error_dev(sc->sc_dev, 1556 "failed preparing to sleep (%s)\n", 1557 AcpiFormatException(ret)); 1558 break; 1559 } 1560 DELAY(1000000); 1561 acpi_sleepstate = state; 1562 acpi_md_OsDisableInterrupt(); 1563 AcpiEnterSleepState(ACPI_STATE_S5); 1564 aprint_error_dev(sc->sc_dev, "WARNING powerdown failed!\n"); 1565 break; 1566 } 1567 1568 acpi_sleepstate = ACPI_STATE_S0; 1569 return ret; 1570 } 1571 1572 #if defined(ACPI_ACTIVATE_DEV) 1573 /* XXX This very incomplete */ 1574 ACPI_STATUS 1575 acpi_allocate_resources(ACPI_HANDLE handle) 1576 { 1577 ACPI_BUFFER bufp, bufc, bufn; 1578 ACPI_RESOURCE *resp, *resc, *resn; 1579 ACPI_RESOURCE_IRQ *irq; 1580 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 1581 ACPI_STATUS rv; 1582 uint delta; 1583 1584 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 1585 if (ACPI_FAILURE(rv)) 1586 goto out; 1587 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 1588 if (ACPI_FAILURE(rv)) { 1589 goto out1; 1590 } 1591 1592 bufn.Length = 1000; 1593 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 1594 resp = bufp.Pointer; 1595 resc = bufc.Pointer; 1596 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 1597 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1598 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 1599 resp = ACPI_NEXT_RESOURCE(resp); 1600 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 1601 break; 1602 /* Found identical Id */ 1603 resn->Type = resc->Type; 1604 switch (resc->Type) { 1605 case ACPI_RESOURCE_TYPE_IRQ: 1606 memcpy(&resn->Data, &resp->Data, 1607 sizeof(ACPI_RESOURCE_IRQ)); 1608 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 1609 irq->Interrupts[0] = 1610 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 1611 Interrupts[irq->InterruptCount-1]; 1612 irq->InterruptCount = 1; 1613 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 1614 break; 1615 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 1616 memcpy(&resn->Data, &resp->Data, 1617 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 1618 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 1619 #if 0 1620 /* 1621 * XXX not duplicating the interrupt logic above 1622 * because its not clear what it accomplishes. 1623 */ 1624 xirq->Interrupts[0] = 1625 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 1626 Interrupts[irq->NumberOfInterrupts-1]; 1627 xirq->NumberOfInterrupts = 1; 1628 #endif 1629 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 1630 break; 1631 case ACPI_RESOURCE_TYPE_IO: 1632 memcpy(&resn->Data, &resp->Data, 1633 sizeof(ACPI_RESOURCE_IO)); 1634 resn->Length = resp->Length; 1635 break; 1636 default: 1637 printf("acpi_allocate_resources: res=%d\n", resc->Type); 1638 rv = AE_BAD_DATA; 1639 goto out2; 1640 } 1641 resc = ACPI_NEXT_RESOURCE(resc); 1642 resn = ACPI_NEXT_RESOURCE(resn); 1643 resp = ACPI_NEXT_RESOURCE(resp); 1644 delta = (UINT8 *)resn - (UINT8 *)bufn.Pointer; 1645 if (delta >= 1646 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 1647 bufn.Length *= 2; 1648 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 1649 M_ACPI, M_WAITOK); 1650 resn = (ACPI_RESOURCE *)((UINT8 *)bufn.Pointer + delta); 1651 } 1652 } 1653 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1654 printf("acpi_allocate_resources: resc not exhausted\n"); 1655 rv = AE_BAD_DATA; 1656 goto out3; 1657 } 1658 1659 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 1660 rv = AcpiSetCurrentResources(handle, &bufn); 1661 if (ACPI_FAILURE(rv)) { 1662 printf("acpi_allocate_resources: AcpiSetCurrentResources %s\n", 1663 AcpiFormatException(rv)); 1664 } 1665 1666 out3: 1667 free(bufn.Pointer, M_ACPI); 1668 out2: 1669 ACPI_FREE(bufc.Pointer); 1670 out1: 1671 ACPI_FREE(bufp.Pointer); 1672 out: 1673 return rv; 1674 } 1675 #endif /* ACPI_ACTIVATE_DEV */ 1676 1677 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1678 { 1679 const struct sysctlnode *node; 1680 const struct sysctlnode *ssnode; 1681 1682 if (sysctl_createv(clog, 0, NULL, NULL, 1683 CTLFLAG_PERMANENT, 1684 CTLTYPE_NODE, "hw", NULL, 1685 NULL, 0, NULL, 0, 1686 CTL_HW, CTL_EOL) != 0) 1687 return; 1688 1689 if (sysctl_createv(clog, 0, NULL, &node, 1690 CTLFLAG_PERMANENT, 1691 CTLTYPE_NODE, "acpi", NULL, 1692 NULL, 0, NULL, 0, 1693 CTL_HW, CTL_CREATE, CTL_EOL) != 0) 1694 return; 1695 1696 sysctl_createv(NULL, 0, NULL, NULL, CTLFLAG_READONLY, 1697 CTLTYPE_QUAD, "root", 1698 SYSCTL_DESCR("ACPI root pointer"), 1699 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1700 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL); 1701 sysctl_createv(NULL, 0, NULL, NULL, CTLFLAG_READONLY, 1702 CTLTYPE_STRING, "supported_states", 1703 SYSCTL_DESCR("Supported ACPI system states"), 1704 NULL, 0, acpi_supported_states, 0, 1705 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL); 1706 1707 /* ACPI sleepstate sysctl */ 1708 if (sysctl_createv(NULL, 0, NULL, &node, 1709 CTLFLAG_PERMANENT, 1710 CTLTYPE_NODE, "machdep", NULL, 1711 NULL, 0, NULL, 0, CTL_MACHDEP, CTL_EOL) != 0) 1712 return; 1713 if (sysctl_createv(NULL, 0, &node, &ssnode, 1714 CTLFLAG_READWRITE, CTLTYPE_INT, "sleep_state", 1715 NULL, sysctl_hw_acpi_sleepstate, 0, NULL, 0, CTL_CREATE, 1716 CTL_EOL) != 0) 1717 return; 1718 } 1719 1720 static int 1721 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1722 { 1723 int error, t; 1724 struct sysctlnode node; 1725 1726 node = *rnode; 1727 t = acpi_sleepstate; 1728 node.sysctl_data = &t; 1729 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1730 if (error || newp == NULL) 1731 return error; 1732 1733 if (acpi_softc == NULL) 1734 return ENOSYS; 1735 1736 acpi_enter_sleep_state(acpi_softc, t); 1737 1738 return 0; 1739 } 1740 1741 static ACPI_TABLE_HEADER * 1742 acpi_map_rsdt(void) 1743 { 1744 ACPI_PHYSICAL_ADDRESS paddr; 1745 ACPI_TABLE_RSDP *rsdp; 1746 1747 paddr = AcpiOsGetRootPointer(); 1748 if (paddr == 0) { 1749 printf("ACPI: couldn't get root pointer\n"); 1750 return NULL; 1751 } 1752 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1753 if (rsdp == NULL) { 1754 printf("ACPI: couldn't map RSDP\n"); 1755 return NULL; 1756 } 1757 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1758 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress; 1759 else 1760 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress; 1761 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1762 1763 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1764 } 1765 1766 static void 1767 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1768 { 1769 if (rsdt == NULL) 1770 return; 1771 1772 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1773 } 1774
Indexes created Wed Sep 24 22:09:59 GMT 2025