1 /* $NetBSD: acpi.c,v 1.131 2009/08/25 10:34:08 jmcneill 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 1.131 2009/08/25 10:34:08 jmcneill 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 #ifdef ACPIVERBOSE 94 #include <dev/acpi/acpidevs_data.h> 95 #endif 96 97 #if defined(ACPI_PCI_FIXUP) 98 #error The option ACPI_PCI_FIXUP has been obsoleted by PCI_INTR_FIXUP_DISABLED. Please adjust your kernel configuration file. 99 #endif 100 101 #ifdef PCI_INTR_FIXUP_DISABLED 102 #include <dev/pci/pcidevs.h> 103 #endif 104 105 MALLOC_DECLARE(M_ACPI); 106 107 #include <machine/acpi_machdep.h> 108 109 #ifdef ACPI_DEBUGGER 110 #define ACPI_DBGR_INIT 0x01 111 #define ACPI_DBGR_TABLES 0x02 112 #define ACPI_DBGR_ENABLE 0x04 113 #define ACPI_DBGR_PROBE 0x08 114 #define ACPI_DBGR_RUNNING 0x10 115 116 static int acpi_dbgr = 0x00; 117 #endif 118 119 static ACPI_TABLE_DESC acpi_initial_tables[128]; 120 121 static int acpi_match(device_t, cfdata_t, void *); 122 static void acpi_attach(device_t, device_t, void *); 123 static void acpi_childdet(device_t, device_t); 124 static int acpi_detach(device_t, int); 125 126 static int acpi_rescan(device_t, const char *, const int *); 127 static void acpi_rescan1(struct acpi_softc *, const char *, const int *); 128 static void acpi_rescan_nodes(struct acpi_softc *); 129 130 static int acpi_print(void *aux, const char *); 131 132 static int sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS); 133 134 extern struct cfdriver acpi_cd; 135 136 CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 137 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 138 139 /* 140 * This is a flag we set when the ACPI subsystem is active. Machine 141 * dependent code may wish to skip other steps (such as attaching 142 * subsystems that ACPI supercedes) when ACPI is active. 143 */ 144 int acpi_active; 145 int acpi_force_load; 146 int acpi_suspended = 0; 147 148 /* 149 * Pointer to the ACPI subsystem's state. There can be only 150 * one ACPI instance. 151 */ 152 struct acpi_softc *acpi_softc; 153 154 /* 155 * Locking stuff. 156 */ 157 static kmutex_t acpi_slock; 158 static int acpi_locked; 159 extern kmutex_t acpi_interrupt_list_mtx; 160 161 /* 162 * Ignored HIDs 163 */ 164 static const char * const acpi_ignored_ids[] = { 165 #if defined(i386) || defined(x86_64) 166 "PNP0000", /* AT interrupt controller is handled internally */ 167 "PNP0200", /* AT DMA controller is handled internally */ 168 "PNP0A??", /* Busses aren't enumerated with ACPI yet */ 169 "PNP0B00", /* AT RTC is handled internally */ 170 "PNP0C01", /* No "System Board" driver */ 171 "PNP0C02", /* No "PnP motherboard register resources" driver */ 172 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 173 #endif 174 #if defined(x86_64) 175 "PNP0C04", /* FPU is handled internally */ 176 #endif 177 NULL 178 }; 179 180 /* 181 * sysctl-related information 182 */ 183 184 static uint64_t acpi_root_pointer; /* found as hw.acpi.root */ 185 static int acpi_sleepstate = ACPI_STATE_S0; 186 static char acpi_supported_states[3 * 6 + 1] = ""; 187 188 /* 189 * Prototypes. 190 */ 191 static void acpi_build_tree(struct acpi_softc *); 192 static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, UINT32, void *, void **); 193 194 static void acpi_enable_fixed_events(struct acpi_softc *); 195 196 static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 197 static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 198 static int is_available_state(struct acpi_softc *, int); 199 200 static bool acpi_suspend(device_t PMF_FN_PROTO); 201 static bool acpi_resume(device_t PMF_FN_PROTO); 202 203 /* 204 * acpi_probe: 205 * 206 * Probe for ACPI support. This is called by the 207 * machine-dependent ACPI front-end. All of the 208 * actual work is done by ACPICA. 209 * 210 * NOTE: This is not an autoconfiguration interface function. 211 */ 212 int 213 acpi_probe(void) 214 { 215 static int beenhere; 216 ACPI_TABLE_HEADER *rsdt; 217 ACPI_STATUS rv; 218 219 if (beenhere != 0) 220 panic("acpi_probe: ACPI has already been probed"); 221 beenhere = 1; 222 223 mutex_init(&acpi_slock, MUTEX_DEFAULT, IPL_NONE); 224 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 225 acpi_locked = 0; 226 227 /* 228 * Start up ACPICA. 229 */ 230 #ifdef ACPI_DEBUGGER 231 if (acpi_dbgr & ACPI_DBGR_INIT) 232 acpi_osd_debugger(); 233 #endif 234 235 AcpiGbl_AllMethodsSerialized = FALSE; 236 AcpiGbl_EnableInterpreterSlack = TRUE; 237 238 rv = AcpiInitializeSubsystem(); 239 if (ACPI_FAILURE(rv)) { 240 printf("ACPI: unable to initialize ACPICA: %s\n", 241 AcpiFormatException(rv)); 242 return 0; 243 } 244 245 rv = AcpiInitializeTables(acpi_initial_tables, 128, 0); 246 if (ACPI_FAILURE(rv)) { 247 #ifdef ACPI_DEBUG 248 printf("ACPI: unable to initialize ACPI tables: %s\n", 249 AcpiFormatException(rv)); 250 #endif 251 AcpiTerminate(); 252 return 0; 253 } 254 255 rv = AcpiReallocateRootTable(); 256 if (ACPI_FAILURE(rv)) { 257 printf("ACPI: unable to reallocate root table: %s\n", 258 AcpiFormatException(rv)); 259 AcpiTerminate(); 260 return 0; 261 } 262 263 #ifdef ACPI_DEBUGGER 264 if (acpi_dbgr & ACPI_DBGR_TABLES) 265 acpi_osd_debugger(); 266 #endif 267 268 rv = AcpiLoadTables(); 269 if (ACPI_FAILURE(rv)) { 270 printf("ACPI: unable to load tables: %s\n", 271 AcpiFormatException(rv)); 272 AcpiTerminate(); 273 return 0; 274 } 275 276 rsdt = acpi_map_rsdt(); 277 if (rsdt == NULL) { 278 printf("ACPI: unable to map RSDT\n"); 279 AcpiTerminate(); 280 return 0; 281 } 282 283 if (!acpi_force_load && (acpi_find_quirks() & ACPI_QUIRK_BROKEN)) { 284 printf("ACPI: BIOS implementation in listed as broken:\n"); 285 printf("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 286 "AslId <%4.4s,%08x>\n", 287 rsdt->OemId, rsdt->OemTableId, 288 rsdt->OemRevision, 289 rsdt->AslCompilerId, 290 rsdt->AslCompilerRevision); 291 printf("ACPI: not used. set acpi_force_load to use anyway.\n"); 292 acpi_unmap_rsdt(rsdt); 293 AcpiTerminate(); 294 return 0; 295 } 296 297 acpi_unmap_rsdt(rsdt); 298 299 #if notyet 300 /* Install the default address space handlers. */ 301 rv = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, 302 ACPI_ADR_SPACE_SYSTEM_MEMORY, ACPI_DEFAULT_HANDLER, NULL, NULL); 303 if (ACPI_FAILURE(rv)) { 304 printf("ACPI: unable to initialise SystemMemory handler: %s\n", 305 AcpiFormatException(rv)); 306 AcpiTerminate(); 307 return 0; 308 } 309 rv = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, 310 ACPI_ADR_SPACE_SYSTEM_IO, ACPI_DEFAULT_HANDLER, NULL, NULL); 311 if (ACPI_FAILURE(rv)) { 312 printf("ACPI: unable to initialise SystemIO handler: %s\n", 313 AcpiFormatException(rv)); 314 AcpiTerminate(); 315 return 0; 316 } 317 rv = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, 318 ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL); 319 if (ACPI_FAILURE(rv)) { 320 printf("ACPI: unabled to initialise PciConfig handler: %s\n", 321 AcpiFormatException(rv)); 322 AcpiTerminate(); 323 return 0; 324 } 325 #endif 326 327 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 328 if (ACPI_FAILURE(rv)) { 329 printf("ACPI: unable to enable: %s\n", AcpiFormatException(rv)); 330 AcpiTerminate(); 331 return 0; 332 } 333 334 /* 335 * Looks like we have ACPI! 336 */ 337 338 return 1; 339 } 340 341 static int 342 acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 343 { 344 struct cfattach *ca; 345 346 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 347 return (ca == &acpi_ca); 348 } 349 350 int 351 acpi_check(device_t parent, const char *ifattr) 352 { 353 return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); 354 } 355 356 ACPI_PHYSICAL_ADDRESS 357 acpi_OsGetRootPointer(void) 358 { 359 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 360 361 /* 362 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 363 * 364 * IA-64: Use the EFI. 365 * 366 * We let MD code handle this since there are multiple 367 * ways to do it. 368 */ 369 370 PhysicalAddress = acpi_md_OsGetRootPointer(); 371 372 if (acpi_root_pointer == 0) 373 acpi_root_pointer = PhysicalAddress; 374 375 return PhysicalAddress; 376 } 377 378 /* 379 * acpi_match: 380 * 381 * Autoconfiguration `match' routine. 382 */ 383 static int 384 acpi_match(device_t parent, cfdata_t match, void *aux) 385 { 386 /* 387 * XXX Check other locators? Hard to know -- machine 388 * dependent code has already checked for the presence 389 * of ACPI by calling acpi_probe(), so I suppose we 390 * don't really have to do anything else. 391 */ 392 return 1; 393 } 394 395 /* Remove references to child devices. 396 * 397 * XXX Need to reclaim any resources? 398 */ 399 static void 400 acpi_childdet(device_t self, device_t child) 401 { 402 struct acpi_softc *sc = device_private(self); 403 struct acpi_scope *as; 404 struct acpi_devnode *ad; 405 406 if (sc->sc_apmbus == child) 407 sc->sc_apmbus = NULL; 408 409 TAILQ_FOREACH(as, &sc->sc_scopes, as_list) { 410 TAILQ_FOREACH(ad, &as->as_devnodes, ad_list) { 411 if (ad->ad_device == child) 412 ad->ad_device = NULL; 413 } 414 } 415 } 416 417 /* 418 * acpi_attach: 419 * 420 * Autoconfiguration `attach' routine. Finish initializing 421 * ACPICA (some initialization was done in acpi_probe(), 422 * which was required to check for the presence of ACPI), 423 * and enable the ACPI subsystem. 424 */ 425 static void 426 acpi_attach(device_t parent, device_t self, void *aux) 427 { 428 struct acpi_softc *sc = device_private(self); 429 struct acpibus_attach_args *aa = aux; 430 ACPI_STATUS rv; 431 ACPI_TABLE_HEADER *rsdt; 432 433 aprint_naive("\n"); 434 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 435 436 if (acpi_softc != NULL) 437 panic("acpi_attach: ACPI has already been attached"); 438 439 sysmon_power_settype("acpi"); 440 441 rsdt = acpi_map_rsdt(); 442 if (rsdt) { 443 aprint_verbose_dev( 444 self, 445 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 446 rsdt->OemId, rsdt->OemTableId, 447 rsdt->OemRevision, 448 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 449 } else 450 aprint_error_dev(self, "X/RSDT: Not found\n"); 451 acpi_unmap_rsdt(rsdt); 452 453 sc->sc_dev = self; 454 sc->sc_quirks = acpi_find_quirks(); 455 456 sc->sc_iot = aa->aa_iot; 457 sc->sc_memt = aa->aa_memt; 458 sc->sc_pc = aa->aa_pc; 459 sc->sc_pciflags = aa->aa_pciflags; 460 sc->sc_ic = aa->aa_ic; 461 462 acpi_softc = sc; 463 464 /* 465 * Register null power management handler 466 */ 467 if (!pmf_device_register(self, acpi_suspend, acpi_resume)) 468 aprint_error_dev(self, "couldn't establish power handler\n"); 469 470 /* 471 * Bring ACPI on-line. 472 */ 473 #ifdef ACPI_DEBUGGER 474 if (acpi_dbgr & ACPI_DBGR_ENABLE) 475 acpi_osd_debugger(); 476 #endif 477 478 #define ACPI_ENABLE_PHASE1 \ 479 (ACPI_NO_HANDLER_INIT | ACPI_NO_EVENT_INIT) 480 #define ACPI_ENABLE_PHASE2 \ 481 (ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE | \ 482 ACPI_NO_ADDRESS_SPACE_INIT) 483 484 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE1); 485 if (ACPI_FAILURE(rv)) { 486 aprint_error_dev(self, "unable to enable ACPI: %s\n", 487 AcpiFormatException(rv)); 488 return; 489 } 490 491 acpi_md_callback(); 492 493 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE2); 494 if (ACPI_FAILURE(rv)) { 495 aprint_error_dev(self, "unable to enable ACPI: %s\n", 496 AcpiFormatException(rv)); 497 return; 498 } 499 500 /* early EC handler initialization if ECDT table is available */ 501 config_found_ia(self, "acpiecdtbus", NULL, NULL); 502 503 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 504 if (ACPI_FAILURE(rv)) { 505 aprint_error_dev(self, 506 "unable to initialize ACPI objects: %s\n", 507 AcpiFormatException(rv)); 508 return; 509 } 510 acpi_active = 1; 511 512 /* Our current state is "awake". */ 513 sc->sc_sleepstate = ACPI_STATE_S0; 514 515 /* Show SCI interrupt. */ 516 aprint_verbose_dev(self, "SCI interrupting at int %d\n", 517 AcpiGbl_FADT.SciInterrupt); 518 519 /* 520 * Check for fixed-hardware features. 521 */ 522 acpi_enable_fixed_events(sc); 523 acpitimer_init(); 524 525 /* 526 * Scan the namespace and build our device tree. 527 */ 528 #ifdef ACPI_DEBUGGER 529 if (acpi_dbgr & ACPI_DBGR_PROBE) 530 acpi_osd_debugger(); 531 #endif 532 acpi_build_tree(sc); 533 534 snprintf(acpi_supported_states, sizeof(acpi_supported_states), 535 "%s%s%s%s%s%s", 536 is_available_state(sc, ACPI_STATE_S0) ? "S0 " : "", 537 is_available_state(sc, ACPI_STATE_S1) ? "S1 " : "", 538 is_available_state(sc, ACPI_STATE_S2) ? "S2 " : "", 539 is_available_state(sc, ACPI_STATE_S3) ? "S3 " : "", 540 is_available_state(sc, ACPI_STATE_S4) ? "S4 " : "", 541 is_available_state(sc, ACPI_STATE_S5) ? "S5 " : ""); 542 543 #ifdef ACPI_DEBUGGER 544 if (acpi_dbgr & ACPI_DBGR_RUNNING) 545 acpi_osd_debugger(); 546 #endif 547 } 548 549 static int 550 acpi_detach(device_t self, int flags) 551 { 552 int rc; 553 554 #ifdef ACPI_DEBUGGER 555 if (acpi_dbgr & ACPI_DBGR_RUNNING) 556 acpi_osd_debugger(); 557 #endif 558 559 if ((rc = config_detach_children(self, flags)) != 0) 560 return rc; 561 562 #ifdef ACPI_DEBUGGER 563 if (acpi_dbgr & ACPI_DBGR_PROBE) 564 acpi_osd_debugger(); 565 #endif 566 567 if ((rc = acpitimer_detach()) != 0) 568 return rc; 569 570 #if 0 571 /* 572 * Bring ACPI on-line. 573 */ 574 #ifdef ACPI_DEBUGGER 575 if (acpi_dbgr & ACPI_DBGR_ENABLE) 576 acpi_osd_debugger(); 577 #endif 578 579 #define ACPI_ENABLE_PHASE1 \ 580 (ACPI_NO_HANDLER_INIT | ACPI_NO_EVENT_INIT) 581 #define ACPI_ENABLE_PHASE2 \ 582 (ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE | \ 583 ACPI_NO_ADDRESS_SPACE_INIT) 584 585 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE1); 586 if (ACPI_FAILURE(rv)) { 587 aprint_error_dev(self, "unable to enable ACPI: %s\n", 588 AcpiFormatException(rv)); 589 return; 590 } 591 592 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE2); 593 if (ACPI_FAILURE(rv)) { 594 aprint_error_dev(self, "unable to enable ACPI: %s\n", 595 AcpiFormatException(rv)); 596 return; 597 } 598 599 /* early EC handler initialization if ECDT table is available */ 600 config_found_ia(self, "acpiecdtbus", NULL, NULL); 601 602 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 603 if (ACPI_FAILURE(rv)) { 604 aprint_error_dev(self, 605 "unable to initialize ACPI objects: %s\n", 606 AcpiFormatException(rv)); 607 return; 608 } 609 acpi_active = 1; 610 611 acpi_enable_fixed_events(sc); 612 #endif 613 614 pmf_device_deregister(self); 615 616 #if 0 617 sysmon_power_settype("acpi"); 618 #endif 619 acpi_softc = NULL; 620 621 return 0; 622 } 623 624 static bool 625 acpi_suspend(device_t dv PMF_FN_ARGS) 626 { 627 acpi_suspended = 1; 628 return true; 629 } 630 631 static bool 632 acpi_resume(device_t dv PMF_FN_ARGS) 633 { 634 acpi_suspended = 0; 635 return true; 636 } 637 638 #if 0 639 /* 640 * acpi_disable: 641 * 642 * Disable ACPI. 643 */ 644 static ACPI_STATUS 645 acpi_disable(struct acpi_softc *sc) 646 { 647 ACPI_STATUS rv = AE_OK; 648 649 if (acpi_active) { 650 rv = AcpiDisable(); 651 if (ACPI_SUCCESS(rv)) 652 acpi_active = 0; 653 } 654 return rv; 655 } 656 #endif 657 658 struct acpi_make_devnode_state { 659 struct acpi_softc *softc; 660 struct acpi_scope *scope; 661 }; 662 663 /* 664 * acpi_build_tree: 665 * 666 * Scan relevant portions of the ACPI namespace and attach 667 * child devices. 668 */ 669 static void 670 acpi_build_tree(struct acpi_softc *sc) 671 { 672 static const char *scopes[] = { 673 "\\_PR_", /* ACPI 1.0 processor namespace */ 674 "\\_SB_", /* system bus namespace */ 675 "\\_SI_", /* system indicator namespace */ 676 "\\_TZ_", /* ACPI 1.0 thermal zone namespace */ 677 NULL, 678 }; 679 struct acpi_make_devnode_state state; 680 struct acpi_scope *as; 681 ACPI_HANDLE parent; 682 ACPI_STATUS rv; 683 int i; 684 685 TAILQ_INIT(&sc->sc_scopes); 686 687 state.softc = sc; 688 689 /* 690 * Scan the namespace and build our tree. 691 */ 692 for (i = 0; scopes[i] != NULL; i++) { 693 as = malloc(sizeof(*as), M_ACPI, M_WAITOK); 694 as->as_name = scopes[i]; 695 TAILQ_INIT(&as->as_devnodes); 696 697 TAILQ_INSERT_TAIL(&sc->sc_scopes, as, as_list); 698 699 state.scope = as; 700 701 rv = AcpiGetHandle(ACPI_ROOT_OBJECT, scopes[i], 702 &parent); 703 if (ACPI_SUCCESS(rv)) { 704 AcpiWalkNamespace(ACPI_TYPE_ANY, parent, 100, 705 acpi_make_devnode, &state, NULL); 706 } 707 } 708 709 acpi_rescan1(sc, NULL, NULL); 710 711 acpi_wakedev_scan(sc); 712 } 713 714 static int 715 acpi_rescan(device_t self, const char *ifattr, const int *locators) 716 { 717 struct acpi_softc *sc = device_private(self); 718 719 acpi_rescan1(sc, ifattr, locators); 720 return 0; 721 } 722 723 /* XXX share this with sys/arch/i386/pci/elan520.c */ 724 static bool 725 ifattr_match(const char *snull, const char *t) 726 { 727 return (snull == NULL) || strcmp(snull, t) == 0; 728 } 729 730 static void 731 acpi_rescan1(struct acpi_softc *sc, const char *ifattr, const int *locators) 732 { 733 if (ifattr_match(ifattr, "acpinodebus")) 734 acpi_rescan_nodes(sc); 735 736 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) { 737 sc->sc_apmbus = config_found_ia(sc->sc_dev, "acpiapmbus", NULL, 738 NULL); 739 } 740 } 741 742 static void 743 acpi_rescan_nodes(struct acpi_softc *sc) 744 { 745 struct acpi_scope *as; 746 747 TAILQ_FOREACH(as, &sc->sc_scopes, as_list) { 748 struct acpi_devnode *ad; 749 750 /* Now, for this namespace, try to attach the devices. */ 751 TAILQ_FOREACH(ad, &as->as_devnodes, ad_list) { 752 struct acpi_attach_args aa; 753 754 if (ad->ad_device != NULL) 755 continue; 756 757 aa.aa_node = ad; 758 aa.aa_iot = sc->sc_iot; 759 aa.aa_memt = sc->sc_memt; 760 aa.aa_pc = sc->sc_pc; 761 aa.aa_pciflags = sc->sc_pciflags; 762 aa.aa_ic = sc->sc_ic; 763 764 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) { 765 /* 766 * XXX We only attach devices which are: 767 * 768 * - present 769 * - enabled 770 * - functioning properly 771 * 772 * However, if enabled, it's decoding resources, 773 * so we should claim them, if possible. 774 * Requires changes to bus_space(9). 775 */ 776 if ((ad->ad_devinfo->Valid & ACPI_VALID_STA) == 777 ACPI_VALID_STA && 778 (ad->ad_devinfo->CurrentStatus & 779 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED| 780 ACPI_STA_DEV_OK)) != 781 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED| 782 ACPI_STA_DEV_OK)) 783 continue; 784 } 785 786 /* 787 * XXX Same problem as above... 788 * 789 * Do this check only for devices, as e.g. 790 * a Thermal Zone doesn't have a HID. 791 */ 792 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE && 793 (ad->ad_devinfo->Valid & ACPI_VALID_HID) == 0) 794 continue; 795 796 /* 797 * Handled internally 798 */ 799 if (ad->ad_devinfo->Type == ACPI_TYPE_PROCESSOR || 800 ad->ad_devinfo->Type == ACPI_TYPE_POWER) 801 continue; 802 803 /* 804 * Skip ignored HIDs 805 */ 806 if (acpi_match_hid(ad->ad_devinfo, acpi_ignored_ids)) 807 continue; 808 809 ad->ad_device = config_found_ia(sc->sc_dev, 810 "acpinodebus", &aa, acpi_print); 811 } 812 } 813 } 814 815 #ifdef ACPI_ACTIVATE_DEV 816 static void 817 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 818 { 819 ACPI_STATUS rv; 820 ACPI_DEVICE_INFO *newdi; 821 822 #ifdef ACPI_DEBUG 823 aprint_normal("acpi_activate_device: %s, old status=%x\n", 824 (*di)->HardwareId.Value, (*di)->CurrentStatus); 825 #endif 826 827 rv = acpi_allocate_resources(handle); 828 if (ACPI_FAILURE(rv)) { 829 aprint_error("acpi: activate failed for %s\n", 830 (*di)->HardwareId.String); 831 } else { 832 aprint_verbose("acpi: activated %s\n", 833 (*di)->HardwareId.String); 834 } 835 836 (void)AcpiGetObjectInfo(handle, &newdi); 837 AcpiOsFree(*di); 838 *di = newdi; 839 840 #ifdef ACPI_DEBUG 841 aprint_normal("acpi_activate_device: %s, new status=%x\n", 842 (*di)->HardwareId.Value, (*di)->CurrentStatus); 843 #endif 844 } 845 #endif /* ACPI_ACTIVATE_DEV */ 846 847 /* 848 * acpi_make_devnode: 849 * 850 * Make an ACPI devnode. 851 */ 852 static ACPI_STATUS 853 acpi_make_devnode(ACPI_HANDLE handle, UINT32 level, void *context, 854 void **status) 855 { 856 struct acpi_make_devnode_state *state = context; 857 #if defined(ACPI_DEBUG) || defined(ACPI_EXTRA_DEBUG) 858 struct acpi_softc *sc = state->softc; 859 #endif 860 struct acpi_scope *as = state->scope; 861 struct acpi_devnode *ad; 862 ACPI_OBJECT_TYPE type; 863 ACPI_DEVICE_INFO *devinfo; 864 ACPI_STATUS rv; 865 ACPI_NAME_UNION *anu; 866 int i, clear = 0; 867 868 rv = AcpiGetType(handle, &type); 869 if (ACPI_SUCCESS(rv)) { 870 rv = AcpiGetObjectInfo(handle, &devinfo); 871 if (ACPI_FAILURE(rv)) { 872 #ifdef ACPI_DEBUG 873 aprint_normal_dev(sc->sc_dev, 874 "AcpiGetObjectInfo failed: %s\n", 875 AcpiFormatException(rv)); 876 #endif 877 goto out; /* XXX why return OK */ 878 } 879 880 switch (type) { 881 case ACPI_TYPE_DEVICE: 882 #ifdef ACPI_ACTIVATE_DEV 883 if ((devinfo->Valid & (ACPI_VALID_STA|ACPI_VALID_HID)) == 884 (ACPI_VALID_STA|ACPI_VALID_HID) && 885 (devinfo->CurrentStatus & 886 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED)) == 887 ACPI_STA_DEV_PRESENT) 888 acpi_activate_device(handle, &devinfo); 889 890 /* FALLTHROUGH */ 891 #endif 892 893 case ACPI_TYPE_PROCESSOR: 894 case ACPI_TYPE_THERMAL: 895 case ACPI_TYPE_POWER: 896 ad = malloc(sizeof(*ad), M_ACPI, M_NOWAIT|M_ZERO); 897 if (ad == NULL) 898 return AE_NO_MEMORY; 899 900 ad->ad_devinfo = devinfo; 901 ad->ad_handle = handle; 902 ad->ad_level = level; 903 ad->ad_scope = as; 904 ad->ad_type = type; 905 906 anu = (ACPI_NAME_UNION *)&devinfo->Name; 907 ad->ad_name[4] = '\0'; 908 for (i = 3, clear = 0; i >= 0; i--) { 909 if (!clear && anu->Ascii[i] == '_') 910 ad->ad_name[i] = '\0'; 911 else { 912 ad->ad_name[i] = anu->Ascii[i]; 913 clear = 1; 914 } 915 } 916 if (ad->ad_name[0] == '\0') 917 ad->ad_name[0] = '_'; 918 919 TAILQ_INSERT_TAIL(&as->as_devnodes, ad, ad_list); 920 921 if (type == ACPI_TYPE_DEVICE && 922 (ad->ad_devinfo->Valid & ACPI_VALID_HID) == 0) 923 goto out; 924 925 #ifdef ACPI_EXTRA_DEBUG 926 aprint_normal_dev(sc->sc_dev, 927 "HID %s found in scope %s level %d\n", 928 ad->ad_devinfo->HardwareId.String, 929 as->as_name, ad->ad_level); 930 if (ad->ad_devinfo->Valid & ACPI_VALID_UID) 931 aprint_normal(" UID %s\n", 932 ad->ad_devinfo->UniqueId.String); 933 if (ad->ad_devinfo->Valid & ACPI_VALID_ADR) 934 aprint_normal(" ADR 0x%016" PRIx64 "\n", 935 ad->ad_devinfo->Address); 936 if (ad->ad_devinfo->Valid & ACPI_VALID_STA) 937 aprint_normal(" STA 0x%08x\n", 938 ad->ad_devinfo->CurrentStatus); 939 #endif 940 } 941 } 942 out: 943 return AE_OK; 944 } 945 946 /* 947 * acpi_print: 948 * 949 * Autoconfiguration print routine for ACPI node bus. 950 */ 951 static int 952 acpi_print(void *aux, const char *pnp) 953 { 954 struct acpi_attach_args *aa = aux; 955 ACPI_STATUS rv; 956 957 if (pnp) { 958 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 959 char *pnpstr = 960 aa->aa_node->ad_devinfo->HardwareId.String; 961 ACPI_BUFFER buf; 962 963 aprint_normal("%s (%s) ", aa->aa_node->ad_name, 964 pnpstr); 965 966 buf.Pointer = NULL; 967 buf.Length = ACPI_ALLOCATE_BUFFER; 968 rv = AcpiEvaluateObject(aa->aa_node->ad_handle, 969 "_STR", NULL, &buf); 970 if (ACPI_SUCCESS(rv)) { 971 ACPI_OBJECT *obj = buf.Pointer; 972 switch (obj->Type) { 973 case ACPI_TYPE_STRING: 974 aprint_normal("[%s] ", obj->String.Pointer); 975 break; 976 case ACPI_TYPE_BUFFER: 977 aprint_normal("buffer %p ", obj->Buffer.Pointer); 978 break; 979 default: 980 aprint_normal("type %d ",obj->Type); 981 break; 982 } 983 AcpiOsFree(buf.Pointer); 984 } 985 #ifdef ACPIVERBOSE 986 else { 987 int i; 988 989 for (i = 0; i < sizeof(acpi_knowndevs) / 990 sizeof(acpi_knowndevs[0]); i++) { 991 if (strcmp(acpi_knowndevs[i].pnp, 992 pnpstr) == 0) { 993 aprint_normal("[%s] ", 994 acpi_knowndevs[i].str); 995 } 996 } 997 } 998 999 #endif 1000 aprint_normal("at %s", pnp); 1001 } else if (aa->aa_node->ad_devinfo->Type != ACPI_TYPE_DEVICE) { 1002 aprint_normal("%s (ACPI Object Type '%s' " 1003 "[0x%02x]) ", aa->aa_node->ad_name, 1004 AcpiUtGetTypeName(aa->aa_node->ad_devinfo->Type), 1005 aa->aa_node->ad_devinfo->Type); 1006 aprint_normal("at %s", pnp); 1007 } else 1008 return 0; 1009 } else { 1010 aprint_normal(" (%s", aa->aa_node->ad_name); 1011 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1012 aprint_normal(", %s", aa->aa_node->ad_devinfo->HardwareId.String); 1013 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_UID) { 1014 const char *uid; 1015 1016 uid = aa->aa_node->ad_devinfo->UniqueId.String; 1017 if (uid[0] == '\0') 1018 uid = "<null>"; 1019 aprint_normal("-%s", uid); 1020 } 1021 } 1022 aprint_normal(")"); 1023 } 1024 1025 return UNCONF; 1026 } 1027 1028 /***************************************************************************** 1029 * ACPI fixed-hardware feature handlers 1030 *****************************************************************************/ 1031 1032 static UINT32 acpi_fixed_button_handler(void *); 1033 static void acpi_fixed_button_pressed(void *); 1034 1035 /* 1036 * acpi_enable_fixed_events: 1037 * 1038 * Enable any fixed-hardware feature handlers. 1039 */ 1040 static void 1041 acpi_enable_fixed_events(struct acpi_softc *sc) 1042 { 1043 static int beenhere; 1044 ACPI_STATUS rv; 1045 1046 KASSERT(beenhere == 0); 1047 beenhere = 1; 1048 1049 /* 1050 * Check for fixed-hardware buttons. 1051 */ 1052 1053 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) { 1054 aprint_verbose_dev(sc->sc_dev, 1055 "fixed-feature power button present\n"); 1056 sc->sc_smpsw_power.smpsw_name = device_xname(sc->sc_dev); 1057 sc->sc_smpsw_power.smpsw_type = PSWITCH_TYPE_POWER; 1058 if (sysmon_pswitch_register(&sc->sc_smpsw_power) != 0) { 1059 aprint_error_dev(sc->sc_dev, 1060 "unable to register fixed power " 1061 "button with sysmon\n"); 1062 } else { 1063 rv = AcpiInstallFixedEventHandler( 1064 ACPI_EVENT_POWER_BUTTON, 1065 acpi_fixed_button_handler, &sc->sc_smpsw_power); 1066 if (ACPI_FAILURE(rv)) { 1067 aprint_error_dev(sc->sc_dev, 1068 "unable to install handler " 1069 "for fixed power button: %s\n", 1070 AcpiFormatException(rv)); 1071 } 1072 } 1073 } 1074 1075 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) { 1076 aprint_verbose_dev(sc->sc_dev, 1077 "fixed-feature sleep button present\n"); 1078 sc->sc_smpsw_sleep.smpsw_name = device_xname(sc->sc_dev); 1079 sc->sc_smpsw_sleep.smpsw_type = PSWITCH_TYPE_SLEEP; 1080 if (sysmon_pswitch_register(&sc->sc_smpsw_power) != 0) { 1081 aprint_error_dev(sc->sc_dev, 1082 "unable to register fixed sleep " 1083 "button with sysmon\n"); 1084 } else { 1085 rv = AcpiInstallFixedEventHandler( 1086 ACPI_EVENT_SLEEP_BUTTON, 1087 acpi_fixed_button_handler, &sc->sc_smpsw_sleep); 1088 if (ACPI_FAILURE(rv)) { 1089 aprint_error_dev(sc->sc_dev, 1090 "unable to install handler " 1091 "for fixed sleep button: %s\n", 1092 AcpiFormatException(rv)); 1093 } 1094 } 1095 } 1096 } 1097 1098 /* 1099 * acpi_fixed_button_handler: 1100 * 1101 * Event handler for the fixed buttons. 1102 */ 1103 static UINT32 1104 acpi_fixed_button_handler(void *context) 1105 { 1106 struct sysmon_pswitch *smpsw = context; 1107 ACPI_STATUS rv; 1108 1109 #ifdef ACPI_BUT_DEBUG 1110 printf("%s: fixed button handler\n", smpsw->smpsw_name); 1111 #endif 1112 1113 rv = AcpiOsExecute(OSL_NOTIFY_HANDLER, 1114 acpi_fixed_button_pressed, smpsw); 1115 if (ACPI_FAILURE(rv)) 1116 printf("%s: WARNING: unable to queue fixed button pressed " 1117 "callback: %s\n", smpsw->smpsw_name, 1118 AcpiFormatException(rv)); 1119 1120 return ACPI_INTERRUPT_HANDLED; 1121 } 1122 1123 /* 1124 * acpi_fixed_button_pressed: 1125 * 1126 * Deal with a fixed button being pressed. 1127 */ 1128 static void 1129 acpi_fixed_button_pressed(void *context) 1130 { 1131 struct sysmon_pswitch *smpsw = context; 1132 1133 #ifdef ACPI_BUT_DEBUG 1134 printf("%s: fixed button pressed, calling sysmon\n", 1135 smpsw->smpsw_name); 1136 #endif 1137 1138 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1139 } 1140 1141 /***************************************************************************** 1142 * ACPI utility routines. 1143 *****************************************************************************/ 1144 1145 /* 1146 * acpi_eval_integer: 1147 * 1148 * Evaluate an integer object. 1149 */ 1150 ACPI_STATUS 1151 acpi_eval_integer(ACPI_HANDLE handle, const char *path, ACPI_INTEGER *valp) 1152 { 1153 ACPI_STATUS rv; 1154 ACPI_BUFFER buf; 1155 ACPI_OBJECT param; 1156 1157 if (handle == NULL) 1158 handle = ACPI_ROOT_OBJECT; 1159 1160 buf.Pointer = ¶m; 1161 buf.Length = sizeof(param); 1162 1163 rv = AcpiEvaluateObjectTyped(handle, path, NULL, &buf, ACPI_TYPE_INTEGER); 1164 if (ACPI_SUCCESS(rv)) 1165 *valp = param.Integer.Value; 1166 1167 return rv; 1168 } 1169 1170 /* 1171 * acpi_eval_string: 1172 * 1173 * Evaluate a (Unicode) string object. 1174 */ 1175 ACPI_STATUS 1176 acpi_eval_string(ACPI_HANDLE handle, const char *path, char **stringp) 1177 { 1178 ACPI_STATUS rv; 1179 ACPI_BUFFER buf; 1180 1181 if (handle == NULL) 1182 handle = ACPI_ROOT_OBJECT; 1183 1184 buf.Pointer = NULL; 1185 buf.Length = ACPI_ALLOCATE_BUFFER; 1186 1187 rv = AcpiEvaluateObjectTyped(handle, path, NULL, &buf, ACPI_TYPE_STRING); 1188 if (ACPI_SUCCESS(rv)) { 1189 ACPI_OBJECT *param = buf.Pointer; 1190 const char *ptr = param->String.Pointer; 1191 size_t len = param->String.Length; 1192 if ((*stringp = AcpiOsAllocate(len)) == NULL) 1193 rv = AE_NO_MEMORY; 1194 else 1195 (void)memcpy(*stringp, ptr, len); 1196 AcpiOsFree(param); 1197 } 1198 1199 return rv; 1200 } 1201 1202 1203 /* 1204 * acpi_eval_struct: 1205 * 1206 * Evaluate a more complex structure. 1207 * Caller must free buf.Pointer by AcpiOsFree(). 1208 */ 1209 ACPI_STATUS 1210 acpi_eval_struct(ACPI_HANDLE handle, const char *path, ACPI_BUFFER *bufp) 1211 { 1212 ACPI_STATUS rv; 1213 1214 if (handle == NULL) 1215 handle = ACPI_ROOT_OBJECT; 1216 1217 bufp->Pointer = NULL; 1218 bufp->Length = ACPI_ALLOCATE_BUFFER; 1219 1220 rv = AcpiEvaluateObject(handle, path, NULL, bufp); 1221 1222 return rv; 1223 } 1224 1225 /* 1226 * acpi_foreach_package_object: 1227 * 1228 * Iterate over all objects in a in a packages and pass then all 1229 * to a function. If the called function returns non AE_OK, the 1230 * iteration is stopped and that value is returned. 1231 */ 1232 1233 ACPI_STATUS 1234 acpi_foreach_package_object(ACPI_OBJECT *pkg, 1235 ACPI_STATUS (*func)(ACPI_OBJECT *, void *), 1236 void *arg) 1237 { 1238 ACPI_STATUS rv = AE_OK; 1239 int i; 1240 1241 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE) 1242 return AE_BAD_PARAMETER; 1243 1244 for (i = 0; i < pkg->Package.Count; i++) { 1245 rv = (*func)(&pkg->Package.Elements[i], arg); 1246 if (ACPI_FAILURE(rv)) 1247 break; 1248 } 1249 1250 return rv; 1251 } 1252 1253 const char * 1254 acpi_name(ACPI_HANDLE handle) 1255 { 1256 static char buffer[80]; 1257 ACPI_BUFFER buf; 1258 ACPI_STATUS rv; 1259 1260 buf.Length = sizeof(buffer); 1261 buf.Pointer = buffer; 1262 1263 rv = AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf); 1264 if (ACPI_FAILURE(rv)) 1265 return "(unknown acpi path)"; 1266 return buffer; 1267 } 1268 1269 /* 1270 * acpi_get: 1271 * 1272 * Fetch data info the specified (empty) ACPI buffer. 1273 * Caller must free buf.Pointer by AcpiOsFree(). 1274 */ 1275 ACPI_STATUS 1276 acpi_get(ACPI_HANDLE handle, ACPI_BUFFER *buf, 1277 ACPI_STATUS (*getit)(ACPI_HANDLE, ACPI_BUFFER *)) 1278 { 1279 buf->Pointer = NULL; 1280 buf->Length = ACPI_ALLOCATE_BUFFER; 1281 1282 return (*getit)(handle, buf); 1283 } 1284 1285 1286 /* 1287 * acpi_match_hid 1288 * 1289 * Match given ids against _HID and _CIDs 1290 */ 1291 int 1292 acpi_match_hid(ACPI_DEVICE_INFO *ad, const char * const *ids) 1293 { 1294 int i; 1295 1296 while (*ids) { 1297 if (ad->Valid & ACPI_VALID_HID) { 1298 if (pmatch(ad->HardwareId.String, *ids, NULL) == 2) 1299 return 1; 1300 } 1301 1302 if (ad->Valid & ACPI_VALID_CID) { 1303 for (i = 0; i < ad->CompatibleIdList.Count; i++) { 1304 if (pmatch(ad->CompatibleIdList.Ids[i].String, *ids, NULL) == 2) 1305 return 1; 1306 } 1307 } 1308 ids++; 1309 } 1310 1311 return 0; 1312 } 1313 1314 /* 1315 * acpi_wake_gpe_helper 1316 * 1317 * Set/unset GPE as both Runtime and Wake 1318 */ 1319 static void 1320 acpi_wake_gpe_helper(ACPI_HANDLE handle, bool enable) 1321 { 1322 ACPI_BUFFER buf; 1323 ACPI_STATUS rv; 1324 ACPI_OBJECT *p, *elt; 1325 1326 rv = acpi_eval_struct(handle, METHOD_NAME__PRW, &buf); 1327 if (ACPI_FAILURE(rv)) 1328 return; /* just ignore */ 1329 1330 p = buf.Pointer; 1331 if (p->Type != ACPI_TYPE_PACKAGE || p->Package.Count < 2) 1332 goto out; /* just ignore */ 1333 1334 elt = p->Package.Elements; 1335 1336 /* TBD: package support */ 1337 if (enable) { 1338 AcpiSetGpeType(NULL, elt[0].Integer.Value, 1339 ACPI_GPE_TYPE_WAKE_RUN); 1340 AcpiEnableGpe(NULL, elt[0].Integer.Value, ACPI_NOT_ISR); 1341 } else 1342 AcpiDisableGpe(NULL, elt[0].Integer.Value, ACPI_NOT_ISR); 1343 1344 out: 1345 AcpiOsFree(buf.Pointer); 1346 } 1347 1348 /* 1349 * acpi_clear_wake_gpe 1350 * 1351 * Clear GPE as both Runtime and Wake 1352 */ 1353 void 1354 acpi_clear_wake_gpe(ACPI_HANDLE handle) 1355 { 1356 acpi_wake_gpe_helper(handle, false); 1357 } 1358 1359 /* 1360 * acpi_set_wake_gpe 1361 * 1362 * Set GPE as both Runtime and Wake 1363 */ 1364 void 1365 acpi_set_wake_gpe(ACPI_HANDLE handle) 1366 { 1367 acpi_wake_gpe_helper(handle, true); 1368 } 1369 1370 1371 /***************************************************************************** 1372 * ACPI sleep support. 1373 *****************************************************************************/ 1374 1375 static int 1376 is_available_state(struct acpi_softc *sc, int state) 1377 { 1378 UINT8 type_a, type_b; 1379 1380 return ACPI_SUCCESS(AcpiGetSleepTypeData((UINT8)state, 1381 &type_a, &type_b)); 1382 } 1383 1384 /* 1385 * acpi_enter_sleep_state: 1386 * 1387 * enter to the specified sleep state. 1388 */ 1389 1390 ACPI_STATUS 1391 acpi_enter_sleep_state(struct acpi_softc *sc, int state) 1392 { 1393 int err; 1394 ACPI_STATUS ret = AE_OK; 1395 1396 if (state == acpi_sleepstate) 1397 return AE_OK; 1398 1399 aprint_normal_dev(sc->sc_dev, "entering state %d\n", state); 1400 1401 switch (state) { 1402 case ACPI_STATE_S0: 1403 break; 1404 case ACPI_STATE_S1: 1405 case ACPI_STATE_S2: 1406 case ACPI_STATE_S3: 1407 case ACPI_STATE_S4: 1408 if (!is_available_state(sc, state)) { 1409 aprint_error_dev(sc->sc_dev, 1410 "ACPI S%d not available on this platform\n", state); 1411 break; 1412 } 1413 1414 acpi_wakedev_commit(sc); 1415 1416 if (state != ACPI_STATE_S1 && !pmf_system_suspend(PMF_F_NONE)) { 1417 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1418 break; 1419 } 1420 1421 ret = AcpiEnterSleepStatePrep(state); 1422 if (ACPI_FAILURE(ret)) { 1423 aprint_error_dev(sc->sc_dev, 1424 "failed preparing to sleep (%s)\n", 1425 AcpiFormatException(ret)); 1426 break; 1427 } 1428 1429 acpi_sleepstate = state; 1430 if (state == ACPI_STATE_S1) { 1431 /* just enter the state */ 1432 acpi_md_OsDisableInterrupt(); 1433 ret = AcpiEnterSleepState((UINT8)state); 1434 if (ACPI_FAILURE(ret)) 1435 aprint_error_dev(sc->sc_dev, 1436 "failed to enter sleep state S1: %s\n", 1437 AcpiFormatException(ret)); 1438 AcpiLeaveSleepState((UINT8)state); 1439 } else { 1440 err = acpi_md_sleep(state); 1441 if (state == ACPI_STATE_S4) 1442 AcpiEnable(); 1443 pmf_system_bus_resume(PMF_F_NONE); 1444 AcpiLeaveSleepState((UINT8)state); 1445 pmf_system_resume(PMF_F_NONE); 1446 } 1447 1448 break; 1449 case ACPI_STATE_S5: 1450 ret = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1451 if (ACPI_FAILURE(ret)) { 1452 aprint_error_dev(sc->sc_dev, 1453 "failed preparing to sleep (%s)\n", 1454 AcpiFormatException(ret)); 1455 break; 1456 } 1457 DELAY(1000000); 1458 acpi_sleepstate = state; 1459 acpi_md_OsDisableInterrupt(); 1460 AcpiEnterSleepState(ACPI_STATE_S5); 1461 aprint_error_dev(sc->sc_dev, "WARNING powerdown failed!\n"); 1462 break; 1463 } 1464 1465 acpi_sleepstate = ACPI_STATE_S0; 1466 return ret; 1467 } 1468 1469 #if defined(ACPI_ACTIVATE_DEV) 1470 /* XXX This very incomplete */ 1471 ACPI_STATUS 1472 acpi_allocate_resources(ACPI_HANDLE handle) 1473 { 1474 ACPI_BUFFER bufp, bufc, bufn; 1475 ACPI_RESOURCE *resp, *resc, *resn; 1476 ACPI_RESOURCE_IRQ *irq; 1477 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 1478 ACPI_STATUS rv; 1479 uint delta; 1480 1481 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 1482 if (ACPI_FAILURE(rv)) 1483 goto out; 1484 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 1485 if (ACPI_FAILURE(rv)) { 1486 goto out1; 1487 } 1488 1489 bufn.Length = 1000; 1490 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 1491 resp = bufp.Pointer; 1492 resc = bufc.Pointer; 1493 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 1494 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1495 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 1496 resp = ACPI_NEXT_RESOURCE(resp); 1497 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 1498 break; 1499 /* Found identical Id */ 1500 resn->Type = resc->Type; 1501 switch (resc->Type) { 1502 case ACPI_RESOURCE_TYPE_IRQ: 1503 memcpy(&resn->Data, &resp->Data, 1504 sizeof(ACPI_RESOURCE_IRQ)); 1505 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 1506 irq->Interrupts[0] = 1507 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 1508 Interrupts[irq->InterruptCount-1]; 1509 irq->InterruptCount = 1; 1510 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 1511 break; 1512 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 1513 memcpy(&resn->Data, &resp->Data, 1514 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 1515 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 1516 #if 0 1517 /* 1518 * XXX not duplicating the interrupt logic above 1519 * because its not clear what it accomplishes. 1520 */ 1521 xirq->Interrupts[0] = 1522 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 1523 Interrupts[irq->NumberOfInterrupts-1]; 1524 xirq->NumberOfInterrupts = 1; 1525 #endif 1526 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 1527 break; 1528 case ACPI_RESOURCE_TYPE_IO: 1529 memcpy(&resn->Data, &resp->Data, 1530 sizeof(ACPI_RESOURCE_IO)); 1531 resn->Length = resp->Length; 1532 break; 1533 default: 1534 printf("acpi_allocate_resources: res=%d\n", resc->Type); 1535 rv = AE_BAD_DATA; 1536 goto out2; 1537 } 1538 resc = ACPI_NEXT_RESOURCE(resc); 1539 resn = ACPI_NEXT_RESOURCE(resn); 1540 resp = ACPI_NEXT_RESOURCE(resp); 1541 delta = (UINT8 *)resn - (UINT8 *)bufn.Pointer; 1542 if (delta >= 1543 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 1544 bufn.Length *= 2; 1545 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 1546 M_ACPI, M_WAITOK); 1547 resn = (ACPI_RESOURCE *)((UINT8 *)bufn.Pointer + delta); 1548 } 1549 } 1550 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1551 printf("acpi_allocate_resources: resc not exhausted\n"); 1552 rv = AE_BAD_DATA; 1553 goto out3; 1554 } 1555 1556 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 1557 rv = AcpiSetCurrentResources(handle, &bufn); 1558 if (ACPI_FAILURE(rv)) { 1559 printf("acpi_allocate_resources: AcpiSetCurrentResources %s\n", 1560 AcpiFormatException(rv)); 1561 } 1562 1563 out3: 1564 free(bufn.Pointer, M_ACPI); 1565 out2: 1566 AcpiOsFree(bufc.Pointer); 1567 out1: 1568 AcpiOsFree(bufp.Pointer); 1569 out: 1570 return rv; 1571 } 1572 #endif /* ACPI_ACTIVATE_DEV */ 1573 1574 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1575 { 1576 const struct sysctlnode *node; 1577 const struct sysctlnode *ssnode; 1578 1579 if (sysctl_createv(clog, 0, NULL, NULL, 1580 CTLFLAG_PERMANENT, 1581 CTLTYPE_NODE, "hw", NULL, 1582 NULL, 0, NULL, 0, 1583 CTL_HW, CTL_EOL) != 0) 1584 return; 1585 1586 if (sysctl_createv(clog, 0, NULL, &node, 1587 CTLFLAG_PERMANENT, 1588 CTLTYPE_NODE, "acpi", NULL, 1589 NULL, 0, NULL, 0, 1590 CTL_HW, CTL_CREATE, CTL_EOL) != 0) 1591 return; 1592 1593 sysctl_createv(NULL, 0, NULL, NULL, CTLFLAG_READONLY, 1594 CTLTYPE_QUAD, "root", 1595 SYSCTL_DESCR("ACPI root pointer"), 1596 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1597 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL); 1598 sysctl_createv(NULL, 0, NULL, NULL, CTLFLAG_READONLY, 1599 CTLTYPE_STRING, "supported_states", 1600 SYSCTL_DESCR("Supported ACPI system states"), 1601 NULL, 0, acpi_supported_states, 0, 1602 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL); 1603 1604 /* ACPI sleepstate sysctl */ 1605 if (sysctl_createv(NULL, 0, NULL, &node, 1606 CTLFLAG_PERMANENT, 1607 CTLTYPE_NODE, "machdep", NULL, 1608 NULL, 0, NULL, 0, CTL_MACHDEP, CTL_EOL) != 0) 1609 return; 1610 if (sysctl_createv(NULL, 0, &node, &ssnode, 1611 CTLFLAG_READWRITE, CTLTYPE_INT, "sleep_state", 1612 NULL, sysctl_hw_acpi_sleepstate, 0, NULL, 0, CTL_CREATE, 1613 CTL_EOL) != 0) 1614 return; 1615 } 1616 1617 static int 1618 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1619 { 1620 int error, t; 1621 struct sysctlnode node; 1622 1623 node = *rnode; 1624 t = acpi_sleepstate; 1625 node.sysctl_data = &t; 1626 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1627 if (error || newp == NULL) 1628 return error; 1629 1630 if (acpi_softc == NULL) 1631 return ENOSYS; 1632 1633 acpi_enter_sleep_state(acpi_softc, t); 1634 1635 return 0; 1636 } 1637 1638 static ACPI_TABLE_HEADER * 1639 acpi_map_rsdt(void) 1640 { 1641 ACPI_PHYSICAL_ADDRESS paddr; 1642 ACPI_TABLE_RSDP *rsdp; 1643 1644 paddr = AcpiOsGetRootPointer(); 1645 if (paddr == 0) { 1646 printf("ACPI: couldn't get root pointer\n"); 1647 return NULL; 1648 } 1649 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1650 if (rsdp == NULL) { 1651 printf("ACPI: couldn't map RSDP\n"); 1652 return NULL; 1653 } 1654 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1655 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress; 1656 else 1657 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress; 1658 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1659 1660 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1661 } 1662 1663 static void 1664 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1665 { 1666 if (rsdt == NULL) 1667 return; 1668 1669 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1670 } 1671