acpi.c revision 1.156
1 /* $NetBSD: acpi.c,v 1.156 2010/03/05 21:01:44 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 1.156 2010/03/05 21:01:44 jruoho Exp $"); 74 75 #include "opt_acpi.h" 76 #include "opt_pcifixup.h" 77 78 #include <sys/param.h> 79 #include <sys/device.h> 80 #include <sys/kernel.h> 81 #include <sys/malloc.h> 82 #include <sys/mutex.h> 83 #include <sys/sysctl.h> 84 #include <sys/systm.h> 85 86 #include <dev/acpi/acpireg.h> 87 #include <dev/acpi/acpivar.h> 88 #include <dev/acpi/acpi_osd.h> 89 #include <dev/acpi/acpi_pci.h> 90 #include <dev/acpi/acpi_timer.h> 91 #include <dev/acpi/acpi_wakedev.h> 92 93 #ifdef ACPIVERBOSE 94 #include <dev/acpi/acpidevs_data.h> 95 #endif 96 97 #define _COMPONENT ACPI_TOOLS 98 ACPI_MODULE_NAME ("acpi") 99 100 #if defined(ACPI_PCI_FIXUP) 101 #error The option ACPI_PCI_FIXUP has been obsoleted by PCI_INTR_FIXUP_DISABLED. Please adjust your kernel configuration file. 102 #endif 103 104 #ifdef PCI_INTR_FIXUP_DISABLED 105 #include <dev/pci/pcidevs.h> 106 #endif 107 108 MALLOC_DECLARE(M_ACPI); 109 110 #include <machine/acpi_machdep.h> 111 112 #ifdef ACPI_DEBUGGER 113 #define ACPI_DBGR_INIT 0x01 114 #define ACPI_DBGR_TABLES 0x02 115 #define ACPI_DBGR_ENABLE 0x04 116 #define ACPI_DBGR_PROBE 0x08 117 #define ACPI_DBGR_RUNNING 0x10 118 119 static int acpi_dbgr = 0x00; 120 #endif 121 122 static ACPI_TABLE_DESC acpi_initial_tables[128]; 123 124 static int acpi_match(device_t, cfdata_t, void *); 125 static void acpi_attach(device_t, device_t, void *); 126 static void acpi_childdet(device_t, device_t); 127 static int acpi_detach(device_t, int); 128 129 static int acpi_rescan(device_t, const char *, const int *); 130 static void acpi_rescan1(struct acpi_softc *, const char *, const int *); 131 static void acpi_rescan_nodes(struct acpi_softc *); 132 133 static int acpi_print(void *aux, const char *); 134 135 static int sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS); 136 137 extern struct cfdriver acpi_cd; 138 139 CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 140 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 141 142 /* 143 * This is a flag we set when the ACPI subsystem is active. Machine 144 * dependent code may wish to skip other steps (such as attaching 145 * subsystems that ACPI supercedes) when ACPI is active. 146 */ 147 int acpi_active; 148 int acpi_force_load; 149 int acpi_suspended = 0; 150 151 /* 152 * Pointer to the ACPI subsystem's state. There can be only 153 * one ACPI instance. 154 */ 155 struct acpi_softc *acpi_softc; 156 157 /* 158 * Locking stuff. 159 */ 160 extern kmutex_t acpi_interrupt_list_mtx; 161 162 /* 163 * Ignored HIDs. 164 */ 165 static const char * const acpi_ignored_ids[] = { 166 #if defined(i386) || defined(x86_64) 167 "PNP0000", /* AT interrupt controller is handled internally */ 168 "PNP0200", /* AT DMA controller is handled internally */ 169 "PNP0A??", /* PCI Busses are handled internally */ 170 "PNP0B00", /* AT RTC is handled internally */ 171 "PNP0C01", /* No "System Board" driver */ 172 "PNP0C02", /* No "PnP motherboard register resources" driver */ 173 "PNP0C0B", /* No need for "ACPI fan" driver */ 174 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 175 "INT0800", /* Intel HW RNG is handled internally */ 176 #endif 177 #if defined(x86_64) 178 "PNP0C04", /* FPU is handled internally */ 179 #endif 180 NULL 181 }; 182 183 /* 184 * sysctl-related information 185 */ 186 187 static uint64_t acpi_root_pointer; /* found as hw.acpi.root */ 188 static int acpi_sleepstate = ACPI_STATE_S0; 189 static char acpi_supported_states[3 * 6 + 1] = ""; 190 191 /* 192 * Prototypes. 193 */ 194 static void acpi_build_tree(struct acpi_softc *); 195 static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, 196 void *, void **); 197 198 static void acpi_enable_fixed_events(struct acpi_softc *); 199 200 static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 201 static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 202 static int is_available_state(struct acpi_softc *, int); 203 204 static bool acpi_suspend(device_t, const pmf_qual_t *); 205 static bool acpi_resume(device_t, const pmf_qual_t *); 206 207 /* 208 * acpi_probe: 209 * 210 * Probe for ACPI support. This is called by the 211 * machine-dependent ACPI front-end. All of the 212 * actual work is done by ACPICA. 213 * 214 * NOTE: This is not an autoconfiguration interface function. 215 */ 216 int 217 acpi_probe(void) 218 { 219 static int beenhere; 220 ACPI_TABLE_HEADER *rsdt; 221 ACPI_STATUS rv; 222 223 if (beenhere != 0) 224 panic("acpi_probe: ACPI has already been probed"); 225 beenhere = 1; 226 227 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 228 229 /* 230 * Start up ACPICA. 231 */ 232 #ifdef ACPI_DEBUGGER 233 if (acpi_dbgr & ACPI_DBGR_INIT) 234 acpi_osd_debugger(); 235 #endif 236 237 AcpiGbl_AllMethodsSerialized = FALSE; 238 AcpiGbl_EnableInterpreterSlack = TRUE; 239 240 rv = AcpiInitializeSubsystem(); 241 if (ACPI_FAILURE(rv)) { 242 printf("ACPI: unable to initialize ACPICA: %s\n", 243 AcpiFormatException(rv)); 244 return 0; 245 } 246 247 rv = AcpiInitializeTables(acpi_initial_tables, 128, 0); 248 if (ACPI_FAILURE(rv)) { 249 #ifdef ACPI_DEBUG 250 printf("ACPI: unable to initialize ACPI tables: %s\n", 251 AcpiFormatException(rv)); 252 #endif 253 AcpiTerminate(); 254 return 0; 255 } 256 257 rv = AcpiReallocateRootTable(); 258 if (ACPI_FAILURE(rv)) { 259 printf("ACPI: unable to reallocate root table: %s\n", 260 AcpiFormatException(rv)); 261 AcpiTerminate(); 262 return 0; 263 } 264 265 #ifdef ACPI_DEBUGGER 266 if (acpi_dbgr & ACPI_DBGR_TABLES) 267 acpi_osd_debugger(); 268 #endif 269 270 rv = AcpiLoadTables(); 271 if (ACPI_FAILURE(rv)) { 272 printf("ACPI: unable to load tables: %s\n", 273 AcpiFormatException(rv)); 274 AcpiTerminate(); 275 return 0; 276 } 277 278 rsdt = acpi_map_rsdt(); 279 if (rsdt == NULL) { 280 printf("ACPI: unable to map RSDT\n"); 281 AcpiTerminate(); 282 return 0; 283 } 284 285 if (!acpi_force_load && (acpi_find_quirks() & ACPI_QUIRK_BROKEN)) { 286 printf("ACPI: BIOS implementation in listed as broken:\n"); 287 printf("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 288 "AslId <%4.4s,%08x>\n", 289 rsdt->OemId, rsdt->OemTableId, 290 rsdt->OemRevision, 291 rsdt->AslCompilerId, 292 rsdt->AslCompilerRevision); 293 printf("ACPI: not used. set acpi_force_load to use anyway.\n"); 294 acpi_unmap_rsdt(rsdt); 295 AcpiTerminate(); 296 return 0; 297 } 298 299 acpi_unmap_rsdt(rsdt); 300 301 #if notyet 302 /* Install the default address space handlers. */ 303 rv = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, 304 ACPI_ADR_SPACE_SYSTEM_MEMORY, ACPI_DEFAULT_HANDLER, NULL, NULL); 305 if (ACPI_FAILURE(rv)) { 306 printf("ACPI: unable to initialize SystemMemory handler: %s\n", 307 AcpiFormatException(rv)); 308 AcpiTerminate(); 309 return 0; 310 } 311 rv = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, 312 ACPI_ADR_SPACE_SYSTEM_IO, ACPI_DEFAULT_HANDLER, NULL, NULL); 313 if (ACPI_FAILURE(rv)) { 314 printf("ACPI: unable to initialize SystemIO handler: %s\n", 315 AcpiFormatException(rv)); 316 AcpiTerminate(); 317 return 0; 318 } 319 rv = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, 320 ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL); 321 if (ACPI_FAILURE(rv)) { 322 printf("ACPI: unable to initialize PciConfig handler: %s\n", 323 AcpiFormatException(rv)); 324 AcpiTerminate(); 325 return 0; 326 } 327 #endif 328 329 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 330 if (ACPI_FAILURE(rv)) { 331 printf("ACPI: unable to enable: %s\n", AcpiFormatException(rv)); 332 AcpiTerminate(); 333 return 0; 334 } 335 336 /* 337 * Looks like we have ACPI! 338 */ 339 340 return 1; 341 } 342 343 static int 344 acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 345 { 346 struct cfattach *ca; 347 348 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 349 return (ca == &acpi_ca); 350 } 351 352 int 353 acpi_check(device_t parent, const char *ifattr) 354 { 355 return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); 356 } 357 358 ACPI_PHYSICAL_ADDRESS 359 acpi_OsGetRootPointer(void) 360 { 361 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 362 363 /* 364 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 365 * 366 * IA-64: Use the EFI. 367 * 368 * We let MD code handle this since there are multiple 369 * ways to do it. 370 */ 371 372 PhysicalAddress = acpi_md_OsGetRootPointer(); 373 374 if (acpi_root_pointer == 0) 375 acpi_root_pointer = PhysicalAddress; 376 377 return PhysicalAddress; 378 } 379 380 /* 381 * acpi_match: 382 * 383 * Autoconfiguration `match' routine. 384 */ 385 static int 386 acpi_match(device_t parent, cfdata_t match, void *aux) 387 { 388 /* 389 * XXX Check other locators? Hard to know -- machine 390 * dependent code has already checked for the presence 391 * of ACPI by calling acpi_probe(), so I suppose we 392 * don't really have to do anything else. 393 */ 394 return 1; 395 } 396 397 /* Remove references to child devices. 398 * 399 * XXX Need to reclaim any resources? 400 */ 401 static void 402 acpi_childdet(device_t self, device_t child) 403 { 404 struct acpi_softc *sc = device_private(self); 405 struct acpi_scope *as; 406 struct acpi_devnode *ad; 407 408 if (sc->sc_apmbus == child) 409 sc->sc_apmbus = NULL; 410 411 TAILQ_FOREACH(as, &sc->sc_scopes, as_list) { 412 TAILQ_FOREACH(ad, &as->as_devnodes, ad_list) { 413 if (ad->ad_device == child) 414 ad->ad_device = NULL; 415 } 416 } 417 } 418 419 /* 420 * acpi_attach: 421 * 422 * Autoconfiguration `attach' routine. Finish initializing 423 * ACPICA (some initialization was done in acpi_probe(), 424 * which was required to check for the presence of ACPI), 425 * and enable the ACPI subsystem. 426 */ 427 static void 428 acpi_attach(device_t parent, device_t self, void *aux) 429 { 430 struct acpi_softc *sc = device_private(self); 431 struct acpibus_attach_args *aa = aux; 432 ACPI_STATUS rv; 433 ACPI_TABLE_HEADER *rsdt; 434 435 aprint_naive("\n"); 436 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 437 438 if (acpi_softc != NULL) 439 panic("acpi_attach: ACPI has already been attached"); 440 441 sysmon_power_settype("acpi"); 442 443 rsdt = acpi_map_rsdt(); 444 if (rsdt) { 445 aprint_verbose_dev( 446 self, 447 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 448 rsdt->OemId, rsdt->OemTableId, 449 rsdt->OemRevision, 450 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 451 } else 452 aprint_error_dev(self, "X/RSDT: Not found\n"); 453 acpi_unmap_rsdt(rsdt); 454 455 sc->sc_dev = self; 456 sc->sc_quirks = acpi_find_quirks(); 457 458 sc->sc_iot = aa->aa_iot; 459 sc->sc_memt = aa->aa_memt; 460 sc->sc_pc = aa->aa_pc; 461 sc->sc_pciflags = aa->aa_pciflags; 462 sc->sc_ic = aa->aa_ic; 463 464 acpi_softc = sc; 465 466 /* 467 * Register null power management handler. 468 */ 469 if (!pmf_device_register(self, acpi_suspend, acpi_resume)) 470 aprint_error_dev(self, "couldn't establish power handler\n"); 471 472 /* 473 * Bring ACPI on-line. 474 */ 475 #ifdef ACPI_DEBUGGER 476 if (acpi_dbgr & ACPI_DBGR_ENABLE) 477 acpi_osd_debugger(); 478 #endif 479 480 #define ACPI_ENABLE_PHASE1 \ 481 (ACPI_NO_HANDLER_INIT | ACPI_NO_EVENT_INIT) 482 #define ACPI_ENABLE_PHASE2 \ 483 (ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE | \ 484 ACPI_NO_ADDRESS_SPACE_INIT) 485 486 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE1); 487 if (ACPI_FAILURE(rv)) { 488 aprint_error_dev(self, "unable to enable ACPI: %s\n", 489 AcpiFormatException(rv)); 490 return; 491 } 492 493 acpi_md_callback(); 494 495 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE2); 496 if (ACPI_FAILURE(rv)) { 497 aprint_error_dev(self, "unable to enable ACPI: %s\n", 498 AcpiFormatException(rv)); 499 return; 500 } 501 502 /* Early EC handler initialization if ECDT table is available. */ 503 config_found_ia(self, "acpiecdtbus", NULL, NULL); 504 505 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 506 if (ACPI_FAILURE(rv)) { 507 aprint_error_dev(self, 508 "unable to initialize ACPI objects: %s\n", 509 AcpiFormatException(rv)); 510 return; 511 } 512 acpi_active = 1; 513 514 /* Our current state is "awake". */ 515 sc->sc_sleepstate = ACPI_STATE_S0; 516 517 /* Show SCI interrupt. */ 518 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 519 AcpiGbl_FADT.SciInterrupt); 520 521 /* 522 * Check for fixed-hardware features. 523 */ 524 acpi_enable_fixed_events(sc); 525 acpitimer_init(); 526 527 /* 528 * Scan the namespace and build our device tree. 529 */ 530 #ifdef ACPI_DEBUGGER 531 if (acpi_dbgr & ACPI_DBGR_PROBE) 532 acpi_osd_debugger(); 533 #endif 534 acpi_build_tree(sc); 535 536 snprintf(acpi_supported_states, sizeof(acpi_supported_states), 537 "%s%s%s%s%s%s", 538 is_available_state(sc, ACPI_STATE_S0) ? "S0 " : "", 539 is_available_state(sc, ACPI_STATE_S1) ? "S1 " : "", 540 is_available_state(sc, ACPI_STATE_S2) ? "S2 " : "", 541 is_available_state(sc, ACPI_STATE_S3) ? "S3 " : "", 542 is_available_state(sc, ACPI_STATE_S4) ? "S4 " : "", 543 is_available_state(sc, ACPI_STATE_S5) ? "S5 " : ""); 544 545 #ifdef ACPI_DEBUGGER 546 if (acpi_dbgr & ACPI_DBGR_RUNNING) 547 acpi_osd_debugger(); 548 #endif 549 550 #ifdef ACPI_DEBUG 551 acpi_debug_init(); 552 #endif 553 } 554 555 static int 556 acpi_detach(device_t self, int flags) 557 { 558 int rc; 559 560 #ifdef ACPI_DEBUGGER 561 if (acpi_dbgr & ACPI_DBGR_RUNNING) 562 acpi_osd_debugger(); 563 #endif 564 565 if ((rc = config_detach_children(self, flags)) != 0) 566 return rc; 567 568 #ifdef ACPI_DEBUGGER 569 if (acpi_dbgr & ACPI_DBGR_PROBE) 570 acpi_osd_debugger(); 571 #endif 572 573 if ((rc = acpitimer_detach()) != 0) 574 return rc; 575 576 #if 0 577 /* 578 * Bring ACPI on-line. 579 */ 580 #ifdef ACPI_DEBUGGER 581 if (acpi_dbgr & ACPI_DBGR_ENABLE) 582 acpi_osd_debugger(); 583 #endif 584 585 #define ACPI_ENABLE_PHASE1 \ 586 (ACPI_NO_HANDLER_INIT | ACPI_NO_EVENT_INIT) 587 #define ACPI_ENABLE_PHASE2 \ 588 (ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE | \ 589 ACPI_NO_ADDRESS_SPACE_INIT) 590 591 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE1); 592 if (ACPI_FAILURE(rv)) { 593 aprint_error_dev(self, "unable to enable ACPI: %s\n", 594 AcpiFormatException(rv)); 595 return; 596 } 597 598 rv = AcpiEnableSubsystem(ACPI_ENABLE_PHASE2); 599 if (ACPI_FAILURE(rv)) { 600 aprint_error_dev(self, "unable to enable ACPI: %s\n", 601 AcpiFormatException(rv)); 602 return; 603 } 604 605 /* Early EC handler initialization if ECDT table is available. */ 606 config_found_ia(self, "acpiecdtbus", NULL, NULL); 607 608 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 609 if (ACPI_FAILURE(rv)) { 610 aprint_error_dev(self, 611 "unable to initialize ACPI objects: %s\n", 612 AcpiFormatException(rv)); 613 return; 614 } 615 acpi_active = 1; 616 617 acpi_enable_fixed_events(sc); 618 #endif 619 620 pmf_device_deregister(self); 621 622 #if 0 623 sysmon_power_settype("acpi"); 624 #endif 625 acpi_softc = NULL; 626 627 return 0; 628 } 629 630 static bool 631 acpi_suspend(device_t dv, const pmf_qual_t *qual) 632 { 633 acpi_suspended = 1; 634 return true; 635 } 636 637 static bool 638 acpi_resume(device_t dv, const pmf_qual_t *qual) 639 { 640 acpi_suspended = 0; 641 return true; 642 } 643 644 #if 0 645 /* 646 * acpi_disable: 647 * 648 * Disable ACPI. 649 */ 650 static ACPI_STATUS 651 acpi_disable(struct acpi_softc *sc) 652 { 653 ACPI_STATUS rv = AE_OK; 654 655 if (acpi_active) { 656 rv = AcpiDisable(); 657 if (ACPI_SUCCESS(rv)) 658 acpi_active = 0; 659 } 660 return rv; 661 } 662 #endif 663 664 struct acpi_make_devnode_state { 665 struct acpi_softc *softc; 666 struct acpi_scope *scope; 667 }; 668 669 /* 670 * acpi_build_tree: 671 * 672 * Scan relevant portions of the ACPI namespace and attach 673 * child devices. 674 */ 675 static void 676 acpi_build_tree(struct acpi_softc *sc) 677 { 678 static const char *scopes[] = { 679 "\\_PR_", /* ACPI 1.0 processor namespace */ 680 "\\_SB_", /* system bus namespace */ 681 "\\_SI_", /* system indicator namespace */ 682 "\\_TZ_", /* ACPI 1.0 thermal zone namespace */ 683 NULL, 684 }; 685 struct acpi_make_devnode_state state; 686 struct acpi_scope *as; 687 ACPI_HANDLE parent; 688 ACPI_STATUS rv; 689 int i; 690 691 TAILQ_INIT(&sc->sc_scopes); 692 693 state.softc = sc; 694 695 /* 696 * Scan the namespace and build our tree. 697 */ 698 for (i = 0; scopes[i] != NULL; i++) { 699 as = malloc(sizeof(*as), M_ACPI, M_WAITOK); 700 as->as_name = scopes[i]; 701 TAILQ_INIT(&as->as_devnodes); 702 703 TAILQ_INSERT_TAIL(&sc->sc_scopes, as, as_list); 704 705 state.scope = as; 706 707 rv = AcpiGetHandle(ACPI_ROOT_OBJECT, scopes[i], 708 &parent); 709 if (ACPI_SUCCESS(rv)) { 710 AcpiWalkNamespace(ACPI_TYPE_ANY, parent, 100, 711 acpi_make_devnode, &state, NULL); 712 } 713 } 714 715 acpi_rescan1(sc, NULL, NULL); 716 717 acpi_wakedev_scan(sc); 718 719 acpi_pcidev_scan(sc); 720 } 721 722 static int 723 acpi_rescan(device_t self, const char *ifattr, const int *locators) 724 { 725 struct acpi_softc *sc = device_private(self); 726 727 acpi_rescan1(sc, ifattr, locators); 728 return 0; 729 } 730 731 static void 732 acpi_rescan1(struct acpi_softc *sc, const char *ifattr, const int *locators) 733 { 734 if (ifattr_match(ifattr, "acpinodebus")) 735 acpi_rescan_nodes(sc); 736 737 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) { 738 sc->sc_apmbus = config_found_ia(sc->sc_dev, "acpiapmbus", NULL, 739 NULL); 740 } 741 } 742 743 static void 744 acpi_rescan_nodes(struct acpi_softc *sc) 745 { 746 struct acpi_scope *as; 747 748 TAILQ_FOREACH(as, &sc->sc_scopes, as_list) { 749 struct acpi_devnode *ad; 750 751 /* Now, for this namespace, try to attach the devices. */ 752 TAILQ_FOREACH(ad, &as->as_devnodes, ad_list) { 753 struct acpi_attach_args aa; 754 755 if (ad->ad_device != NULL) 756 continue; 757 758 aa.aa_node = ad; 759 aa.aa_iot = sc->sc_iot; 760 aa.aa_memt = sc->sc_memt; 761 aa.aa_pc = sc->sc_pc; 762 aa.aa_pciflags = sc->sc_pciflags; 763 aa.aa_ic = sc->sc_ic; 764 765 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) { 766 /* 767 * XXX We only attach devices which are: 768 * 769 * - present 770 * - enabled 771 * - functioning properly 772 * 773 * However, if enabled, it's decoding resources, 774 * so we should claim them, if possible. 775 * Requires changes to bus_space(9). 776 */ 777 if ((ad->ad_devinfo->Valid & ACPI_VALID_STA) == 778 ACPI_VALID_STA && 779 (ad->ad_devinfo->CurrentStatus & 780 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED| 781 ACPI_STA_DEV_OK)) != 782 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED| 783 ACPI_STA_DEV_OK)) 784 continue; 785 } 786 787 /* 788 * XXX Same problem as above... 789 * 790 * Do this check only for devices, as e.g. 791 * a Thermal Zone doesn't have a HID. 792 */ 793 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE && 794 (ad->ad_devinfo->Valid & ACPI_VALID_HID) == 0) 795 continue; 796 797 /* 798 * Handled internally 799 */ 800 if (ad->ad_devinfo->Type == ACPI_TYPE_PROCESSOR || 801 ad->ad_devinfo->Type == ACPI_TYPE_POWER) 802 continue; 803 804 /* 805 * Skip ignored HIDs 806 */ 807 if (acpi_match_hid(ad->ad_devinfo, acpi_ignored_ids)) 808 continue; 809 810 ad->ad_device = config_found_ia(sc->sc_dev, 811 "acpinodebus", &aa, acpi_print); 812 } 813 } 814 } 815 816 #ifdef ACPI_ACTIVATE_DEV 817 static void 818 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 819 { 820 ACPI_STATUS rv; 821 ACPI_DEVICE_INFO *newdi; 822 823 #ifdef ACPI_DEBUG 824 aprint_normal("%s: %s, old status=%x\n", __func__, 825 (*di)->HardwareId.String, (*di)->CurrentStatus); 826 #endif 827 828 rv = acpi_allocate_resources(handle); 829 if (ACPI_FAILURE(rv)) { 830 aprint_error("acpi: activate failed for %s\n", 831 (*di)->HardwareId.String); 832 } else { 833 aprint_verbose("acpi: activated %s\n", 834 (*di)->HardwareId.String); 835 } 836 837 (void)AcpiGetObjectInfo(handle, &newdi); 838 ACPI_FREE(*di); 839 *di = newdi; 840 841 #ifdef ACPI_DEBUG 842 aprint_normal("%s: %s, new status=%x\n", __func__, 843 (*di)->HardwareId.String, (*di)->CurrentStatus); 844 #endif 845 } 846 #endif /* ACPI_ACTIVATE_DEV */ 847 848 /* 849 * acpi_make_devnode: 850 * 851 * Make an ACPI devnode. 852 */ 853 static ACPI_STATUS 854 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 855 void *context, void **status) 856 { 857 struct acpi_make_devnode_state *state = context; 858 struct acpi_softc *sc = state->softc; 859 struct acpi_scope *as = state->scope; 860 struct acpi_devnode *ad; 861 ACPI_DEVICE_INFO *devinfo; 862 ACPI_OBJECT_TYPE type; 863 ACPI_NAME_UNION *anu; 864 ACPI_STATUS rv; 865 int clear, i; 866 867 rv = AcpiGetType(handle, &type); 868 869 if (ACPI_FAILURE(rv)) 870 return AE_OK; /* Do not terminate the walk. */ 871 872 rv = AcpiGetObjectInfo(handle, &devinfo); 873 874 if (ACPI_FAILURE(rv)) { 875 aprint_debug_dev(sc->sc_dev, "failed to get object " 876 "information: %s\n", AcpiFormatException(rv)); 877 return AE_OK; 878 } 879 880 switch (type) { 881 882 case ACPI_TYPE_DEVICE: 883 884 #ifdef ACPI_ACTIVATE_DEV 885 if ((devinfo->Valid & (ACPI_VALID_STA | ACPI_VALID_HID)) == 886 (ACPI_VALID_STA | ACPI_VALID_HID) && 887 (devinfo->CurrentStatus & 888 (ACPI_STA_DEV_PRESENT | ACPI_STA_DEV_ENABLED)) == 889 ACPI_STA_DEV_PRESENT) 890 acpi_activate_device(handle, &devinfo); 891 892 /* FALLTHROUGH */ 893 #endif 894 895 case ACPI_TYPE_PROCESSOR: 896 case ACPI_TYPE_THERMAL: 897 case ACPI_TYPE_POWER: 898 899 ad = malloc(sizeof(*ad), M_ACPI, M_NOWAIT | M_ZERO); 900 901 if (ad == NULL) 902 return AE_NO_MEMORY; 903 904 ad->ad_devinfo = devinfo; 905 ad->ad_handle = handle; 906 ad->ad_level = level; 907 ad->ad_scope = as; 908 ad->ad_type = type; 909 910 anu = (ACPI_NAME_UNION *)&devinfo->Name; 911 ad->ad_name[4] = '\0'; 912 913 for (i = 3, clear = 0; i >= 0; i--) { 914 915 if (clear == 0 && anu->Ascii[i] == '_') 916 ad->ad_name[i] = '\0'; 917 else { 918 ad->ad_name[i] = anu->Ascii[i]; 919 clear = 1; 920 } 921 } 922 923 if (ad->ad_name[0] == '\0') 924 ad->ad_name[0] = '_'; 925 926 TAILQ_INSERT_TAIL(&as->as_devnodes, ad, ad_list); 927 928 if (type != ACPI_TYPE_DEVICE) 929 return AE_OK; 930 931 if ((ad->ad_devinfo->Valid & ACPI_VALID_HID) == 0) 932 return AE_OK; 933 934 #ifdef ACPIVERBOSE 935 aprint_normal_dev(sc->sc_dev, 936 "HID %s found in scope %s level %d\n", 937 ad->ad_devinfo->HardwareId.String, 938 as->as_name, ad->ad_level); 939 940 if (ad->ad_devinfo->Valid & ACPI_VALID_UID) 941 aprint_normal(" UID %s\n", 942 ad->ad_devinfo->UniqueId.String); 943 944 if (ad->ad_devinfo->Valid & ACPI_VALID_ADR) 945 aprint_normal(" ADR 0x%016" PRIx64 "\n", 946 ad->ad_devinfo->Address); 947 948 if (ad->ad_devinfo->Valid & ACPI_VALID_STA) 949 aprint_normal(" STA 0x%08x\n", 950 ad->ad_devinfo->CurrentStatus); 951 #endif 952 } 953 954 return AE_OK; 955 } 956 957 /* 958 * acpi_print: 959 * 960 * Autoconfiguration print routine for ACPI node bus. 961 */ 962 static int 963 acpi_print(void *aux, const char *pnp) 964 { 965 struct acpi_attach_args *aa = aux; 966 ACPI_STATUS rv; 967 968 if (pnp) { 969 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 970 char *pnpstr = 971 aa->aa_node->ad_devinfo->HardwareId.String; 972 ACPI_BUFFER buf; 973 974 aprint_normal("%s (%s) ", aa->aa_node->ad_name, 975 pnpstr); 976 977 rv = acpi_eval_struct(aa->aa_node->ad_handle, 978 "_STR", &buf); 979 if (ACPI_SUCCESS(rv)) { 980 ACPI_OBJECT *obj = buf.Pointer; 981 switch (obj->Type) { 982 case ACPI_TYPE_STRING: 983 aprint_normal("[%s] ", obj->String.Pointer); 984 break; 985 case ACPI_TYPE_BUFFER: 986 aprint_normal("buffer %p ", obj->Buffer.Pointer); 987 break; 988 default: 989 aprint_normal("type %u ",obj->Type); 990 break; 991 } 992 ACPI_FREE(buf.Pointer); 993 } 994 #ifdef ACPIVERBOSE 995 else { 996 int i; 997 998 for (i = 0; i < __arraycount(acpi_knowndevs); 999 i++) { 1000 if (strcmp(acpi_knowndevs[i].pnp, 1001 pnpstr) == 0) { 1002 aprint_normal("[%s] ", 1003 acpi_knowndevs[i].str); 1004 } 1005 } 1006 } 1007 1008 #endif 1009 aprint_normal("at %s", pnp); 1010 } else if (aa->aa_node->ad_devinfo->Type != ACPI_TYPE_DEVICE) { 1011 aprint_normal("%s (ACPI Object Type '%s' " 1012 "[0x%02x]) ", aa->aa_node->ad_name, 1013 AcpiUtGetTypeName(aa->aa_node->ad_devinfo->Type), 1014 aa->aa_node->ad_devinfo->Type); 1015 aprint_normal("at %s", pnp); 1016 } else 1017 return 0; 1018 } else { 1019 aprint_normal(" (%s", aa->aa_node->ad_name); 1020 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 1021 aprint_normal(", %s", aa->aa_node->ad_devinfo->HardwareId.String); 1022 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_UID) { 1023 const char *uid; 1024 1025 uid = aa->aa_node->ad_devinfo->UniqueId.String; 1026 if (uid[0] == '\0') 1027 uid = "<null>"; 1028 aprint_normal("-%s", uid); 1029 } 1030 } 1031 aprint_normal(")"); 1032 } 1033 1034 return UNCONF; 1035 } 1036 1037 /***************************************************************************** 1038 * ACPI fixed-hardware feature handlers 1039 *****************************************************************************/ 1040 1041 static UINT32 acpi_fixed_button_handler(void *); 1042 static void acpi_fixed_button_pressed(void *); 1043 1044 /* 1045 * acpi_enable_fixed_events: 1046 * 1047 * Enable any fixed-hardware feature handlers. 1048 */ 1049 static void 1050 acpi_enable_fixed_events(struct acpi_softc *sc) 1051 { 1052 static int beenhere; 1053 ACPI_STATUS rv; 1054 1055 KASSERT(beenhere == 0); 1056 beenhere = 1; 1057 1058 /* 1059 * Check for fixed-hardware buttons. 1060 */ 1061 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) { 1062 aprint_verbose_dev(sc->sc_dev, 1063 "fixed-feature power button present\n"); 1064 sc->sc_smpsw_power.smpsw_name = device_xname(sc->sc_dev); 1065 sc->sc_smpsw_power.smpsw_type = PSWITCH_TYPE_POWER; 1066 if (sysmon_pswitch_register(&sc->sc_smpsw_power) != 0) { 1067 aprint_error_dev(sc->sc_dev, 1068 "unable to register fixed power " 1069 "button with sysmon\n"); 1070 } else { 1071 rv = AcpiInstallFixedEventHandler( 1072 ACPI_EVENT_POWER_BUTTON, 1073 acpi_fixed_button_handler, &sc->sc_smpsw_power); 1074 if (ACPI_FAILURE(rv)) { 1075 aprint_error_dev(sc->sc_dev, 1076 "unable to install handler " 1077 "for fixed power button: %s\n", 1078 AcpiFormatException(rv)); 1079 } 1080 } 1081 } 1082 1083 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) { 1084 aprint_verbose_dev(sc->sc_dev, 1085 "fixed-feature sleep button present\n"); 1086 sc->sc_smpsw_sleep.smpsw_name = device_xname(sc->sc_dev); 1087 sc->sc_smpsw_sleep.smpsw_type = PSWITCH_TYPE_SLEEP; 1088 if (sysmon_pswitch_register(&sc->sc_smpsw_power) != 0) { 1089 aprint_error_dev(sc->sc_dev, 1090 "unable to register fixed sleep " 1091 "button with sysmon\n"); 1092 } else { 1093 rv = AcpiInstallFixedEventHandler( 1094 ACPI_EVENT_SLEEP_BUTTON, 1095 acpi_fixed_button_handler, &sc->sc_smpsw_sleep); 1096 if (ACPI_FAILURE(rv)) { 1097 aprint_error_dev(sc->sc_dev, 1098 "unable to install handler " 1099 "for fixed sleep button: %s\n", 1100 AcpiFormatException(rv)); 1101 } 1102 } 1103 } 1104 } 1105 1106 /* 1107 * acpi_fixed_button_handler: 1108 * 1109 * Event handler for the fixed buttons. 1110 */ 1111 static UINT32 1112 acpi_fixed_button_handler(void *context) 1113 { 1114 static const int handler = OSL_NOTIFY_HANDLER; 1115 struct sysmon_pswitch *smpsw = context; 1116 1117 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s\n", __func__)); 1118 1119 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1120 1121 return ACPI_INTERRUPT_HANDLED; 1122 } 1123 1124 /* 1125 * acpi_fixed_button_pressed: 1126 * 1127 * Deal with a fixed button being pressed. 1128 */ 1129 static void 1130 acpi_fixed_button_pressed(void *context) 1131 { 1132 struct sysmon_pswitch *smpsw = context; 1133 1134 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s: %s fixed button pressed\n", 1135 __func__, smpsw->smpsw_name)); 1136 1137 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1138 } 1139 1140 /***************************************************************************** 1141 * ACPI utility routines. 1142 *****************************************************************************/ 1143 1144 /* 1145 * acpi_eval_integer: 1146 * 1147 * Evaluate an integer object. 1148 */ 1149 ACPI_STATUS 1150 acpi_eval_integer(ACPI_HANDLE handle, const char *path, ACPI_INTEGER *valp) 1151 { 1152 ACPI_STATUS rv; 1153 ACPI_BUFFER buf; 1154 ACPI_OBJECT param; 1155 1156 if (handle == NULL) 1157 handle = ACPI_ROOT_OBJECT; 1158 1159 buf.Pointer = ¶m; 1160 buf.Length = sizeof(param); 1161 1162 rv = AcpiEvaluateObjectTyped(handle, path, NULL, &buf, 1163 ACPI_TYPE_INTEGER); 1164 if (ACPI_SUCCESS(rv)) 1165 *valp = param.Integer.Value; 1166 1167 return rv; 1168 } 1169 1170 /* 1171 * acpi_eval_set_integer: 1172 * 1173 * Evaluate an integer object with a single integer input parameter. 1174 */ 1175 ACPI_STATUS 1176 acpi_eval_set_integer(ACPI_HANDLE handle, const char *path, ACPI_INTEGER arg) 1177 { 1178 ACPI_OBJECT param_arg; 1179 ACPI_OBJECT_LIST param_args; 1180 1181 if (handle == NULL) 1182 handle = ACPI_ROOT_OBJECT; 1183 1184 param_arg.Type = ACPI_TYPE_INTEGER; 1185 param_arg.Integer.Value = arg; 1186 1187 param_args.Count = 1; 1188 param_args.Pointer = ¶m_arg; 1189 1190 return AcpiEvaluateObject(handle, path, ¶m_args, NULL); 1191 } 1192 1193 /* 1194 * acpi_eval_string: 1195 * 1196 * Evaluate a (Unicode) string object. 1197 */ 1198 ACPI_STATUS 1199 acpi_eval_string(ACPI_HANDLE handle, const char *path, char **stringp) 1200 { 1201 ACPI_OBJECT *obj; 1202 ACPI_BUFFER buf; 1203 ACPI_STATUS rv; 1204 1205 rv = acpi_eval_struct(handle, path, &buf); 1206 1207 if (ACPI_FAILURE(rv)) 1208 return rv; 1209 1210 obj = buf.Pointer; 1211 1212 if (obj->Type != ACPI_TYPE_STRING) { 1213 rv = AE_TYPE; 1214 goto out; 1215 } 1216 1217 if (obj->String.Length == 0) { 1218 rv = AE_BAD_DATA; 1219 goto out; 1220 } 1221 1222 *stringp = ACPI_ALLOCATE(obj->String.Length + 1); 1223 1224 if (*stringp == NULL) { 1225 rv = AE_NO_MEMORY; 1226 goto out; 1227 } 1228 1229 (void)memcpy(*stringp, obj->String.Pointer, obj->String.Length); 1230 1231 (*stringp)[obj->String.Length] = '\0'; 1232 1233 out: 1234 ACPI_FREE(buf.Pointer); 1235 1236 return rv; 1237 } 1238 1239 /* 1240 * acpi_eval_struct: 1241 * 1242 * Evaluate a more complex structure. 1243 * Caller must free buf.Pointer by ACPI_FREE(). 1244 */ 1245 ACPI_STATUS 1246 acpi_eval_struct(ACPI_HANDLE handle, const char *path, ACPI_BUFFER *bufp) 1247 { 1248 ACPI_STATUS rv; 1249 1250 if (handle == NULL) 1251 handle = ACPI_ROOT_OBJECT; 1252 1253 bufp->Pointer = NULL; 1254 bufp->Length = ACPI_ALLOCATE_LOCAL_BUFFER; 1255 1256 rv = AcpiEvaluateObject(handle, path, NULL, bufp); 1257 1258 return rv; 1259 } 1260 1261 /* 1262 * acpi_eval_reference_handle: 1263 * 1264 * Evaluate a reference handle from an element in a package. 1265 */ 1266 ACPI_STATUS 1267 acpi_eval_reference_handle(ACPI_OBJECT *elm, ACPI_HANDLE *handle) 1268 { 1269 1270 if (elm == NULL || handle == NULL) 1271 return AE_BAD_PARAMETER; 1272 1273 switch (elm->Type) { 1274 1275 case ACPI_TYPE_ANY: 1276 case ACPI_TYPE_LOCAL_REFERENCE: 1277 1278 if (elm->Reference.Handle == NULL) 1279 return AE_NULL_ENTRY; 1280 1281 *handle = elm->Reference.Handle; 1282 1283 return AE_OK; 1284 1285 case ACPI_TYPE_STRING: 1286 return AcpiGetHandle(NULL, elm->String.Pointer, handle); 1287 1288 default: 1289 return AE_TYPE; 1290 } 1291 } 1292 1293 /* 1294 * acpi_foreach_package_object: 1295 * 1296 * Iterate over all objects in a package, and pass them all 1297 * to a function. If the called function returns non AE_OK, the 1298 * iteration is stopped and that value is returned. 1299 */ 1300 ACPI_STATUS 1301 acpi_foreach_package_object(ACPI_OBJECT *pkg, 1302 ACPI_STATUS (*func)(ACPI_OBJECT *, void *), 1303 void *arg) 1304 { 1305 ACPI_STATUS rv = AE_OK; 1306 int i; 1307 1308 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE) 1309 return AE_BAD_PARAMETER; 1310 1311 for (i = 0; i < pkg->Package.Count; i++) { 1312 rv = (*func)(&pkg->Package.Elements[i], arg); 1313 if (ACPI_FAILURE(rv)) 1314 break; 1315 } 1316 1317 return rv; 1318 } 1319 1320 /* 1321 * acpi_name: 1322 * 1323 * Return a complete pathname from a handle. 1324 * 1325 * Note that the function uses static data storage; 1326 * if the data is needed for future use, it should be 1327 * copied before any subsequent calls overwrite it. 1328 */ 1329 const char * 1330 acpi_name(ACPI_HANDLE handle) 1331 { 1332 static char buffer[80]; 1333 ACPI_BUFFER buf; 1334 ACPI_STATUS rv; 1335 1336 buf.Length = sizeof(buffer); 1337 buf.Pointer = buffer; 1338 1339 rv = AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf); 1340 if (ACPI_FAILURE(rv)) 1341 return "(unknown acpi path)"; 1342 return buffer; 1343 } 1344 1345 /* 1346 * acpi_get: 1347 * 1348 * Fetch data info the specified (empty) ACPI buffer. 1349 * Caller must free buf.Pointer by ACPI_FREE(). 1350 */ 1351 ACPI_STATUS 1352 acpi_get(ACPI_HANDLE handle, ACPI_BUFFER *buf, 1353 ACPI_STATUS (*getit)(ACPI_HANDLE, ACPI_BUFFER *)) 1354 { 1355 buf->Pointer = NULL; 1356 buf->Length = ACPI_ALLOCATE_LOCAL_BUFFER; 1357 1358 return (*getit)(handle, buf); 1359 } 1360 1361 1362 /* 1363 * acpi_match_hid 1364 * 1365 * Match given ids against _HID and _CIDs. 1366 */ 1367 int 1368 acpi_match_hid(ACPI_DEVICE_INFO *ad, const char * const *ids) 1369 { 1370 int i; 1371 1372 while (*ids) { 1373 if (ad->Valid & ACPI_VALID_HID) { 1374 if (pmatch(ad->HardwareId.String, *ids, NULL) == 2) 1375 return 1; 1376 } 1377 1378 if (ad->Valid & ACPI_VALID_CID) { 1379 for (i = 0; i < ad->CompatibleIdList.Count; i++) { 1380 if (pmatch(ad->CompatibleIdList.Ids[i].String, *ids, NULL) == 2) 1381 return 1; 1382 } 1383 } 1384 ids++; 1385 } 1386 1387 return 0; 1388 } 1389 1390 /* 1391 * acpi_wake_gpe_helper 1392 * 1393 * Set/unset GPE as both Runtime and Wake. 1394 */ 1395 static void 1396 acpi_wake_gpe_helper(ACPI_HANDLE handle, bool enable) 1397 { 1398 ACPI_OBJECT *elm, *obj; 1399 ACPI_INTEGER val; 1400 ACPI_BUFFER buf; 1401 ACPI_STATUS rv; 1402 1403 rv = acpi_eval_struct(handle, METHOD_NAME__PRW, &buf); 1404 1405 if (ACPI_FAILURE(rv)) 1406 return; 1407 1408 obj = buf.Pointer; 1409 1410 if (obj->Type != ACPI_TYPE_PACKAGE || obj->Package.Count < 2) 1411 goto out; 1412 1413 /* 1414 * As noted in ACPI 3.0 (section 7.2.10), the _PRW object is 1415 * a package in which the first element is either an integer 1416 * or again a package. In the latter case the package inside 1417 * the package element has two elements, a reference handle 1418 * and the GPE number. 1419 */ 1420 elm = &obj->Package.Elements[0]; 1421 1422 switch (elm->Type) { 1423 1424 case ACPI_TYPE_INTEGER: 1425 val = elm->Integer.Value; 1426 break; 1427 1428 case ACPI_TYPE_PACKAGE: 1429 1430 if (elm->Package.Count < 2) 1431 goto out; 1432 1433 if (elm->Package.Elements[0].Type != ACPI_TYPE_LOCAL_REFERENCE) 1434 goto out; 1435 1436 if (elm->Package.Elements[1].Type != ACPI_TYPE_INTEGER) 1437 goto out; 1438 1439 val = elm->Package.Elements[1].Integer.Value; 1440 break; 1441 1442 default: 1443 goto out; 1444 } 1445 1446 if (enable) { 1447 (void)AcpiSetGpeType(NULL, val, ACPI_GPE_TYPE_WAKE_RUN); 1448 (void)AcpiEnableGpe(NULL, val, ACPI_NOT_ISR); 1449 } else 1450 (void)AcpiDisableGpe(NULL, val, ACPI_NOT_ISR); 1451 1452 out: 1453 ACPI_FREE(buf.Pointer); 1454 } 1455 1456 /* 1457 * acpi_clear_wake_gpe 1458 * 1459 * Clear GPE as both Runtime and Wake. 1460 */ 1461 void 1462 acpi_clear_wake_gpe(ACPI_HANDLE handle) 1463 { 1464 acpi_wake_gpe_helper(handle, false); 1465 } 1466 1467 /* 1468 * acpi_set_wake_gpe 1469 * 1470 * Set GPE as both Runtime and Wake. 1471 */ 1472 void 1473 acpi_set_wake_gpe(ACPI_HANDLE handle) 1474 { 1475 acpi_wake_gpe_helper(handle, true); 1476 } 1477 1478 1479 /***************************************************************************** 1480 * ACPI sleep support. 1481 *****************************************************************************/ 1482 1483 static int 1484 is_available_state(struct acpi_softc *sc, int state) 1485 { 1486 UINT8 type_a, type_b; 1487 1488 return ACPI_SUCCESS(AcpiGetSleepTypeData((UINT8)state, 1489 &type_a, &type_b)); 1490 } 1491 1492 /* 1493 * acpi_enter_sleep_state: 1494 * 1495 * Enter to the specified sleep state. 1496 */ 1497 1498 ACPI_STATUS 1499 acpi_enter_sleep_state(struct acpi_softc *sc, int state) 1500 { 1501 int err; 1502 ACPI_STATUS ret = AE_OK; 1503 1504 if (state == acpi_sleepstate) 1505 return AE_OK; 1506 1507 aprint_normal_dev(sc->sc_dev, "entering state %d\n", state); 1508 1509 switch (state) { 1510 case ACPI_STATE_S0: 1511 break; 1512 case ACPI_STATE_S1: 1513 case ACPI_STATE_S2: 1514 case ACPI_STATE_S3: 1515 case ACPI_STATE_S4: 1516 if (!is_available_state(sc, state)) { 1517 aprint_error_dev(sc->sc_dev, 1518 "ACPI S%d not available on this platform\n", state); 1519 break; 1520 } 1521 1522 acpi_wakedev_commit(sc, state); 1523 1524 if (state != ACPI_STATE_S1 && !pmf_system_suspend(PMF_Q_NONE)) { 1525 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1526 break; 1527 } 1528 1529 ret = AcpiEnterSleepStatePrep(state); 1530 if (ACPI_FAILURE(ret)) { 1531 aprint_error_dev(sc->sc_dev, 1532 "failed preparing to sleep (%s)\n", 1533 AcpiFormatException(ret)); 1534 break; 1535 } 1536 1537 acpi_sleepstate = state; 1538 if (state == ACPI_STATE_S1) { 1539 /* just enter the state */ 1540 acpi_md_OsDisableInterrupt(); 1541 ret = AcpiEnterSleepState((UINT8)state); 1542 if (ACPI_FAILURE(ret)) 1543 aprint_error_dev(sc->sc_dev, 1544 "failed to enter sleep state S1: %s\n", 1545 AcpiFormatException(ret)); 1546 AcpiLeaveSleepState((UINT8)state); 1547 } else { 1548 err = acpi_md_sleep(state); 1549 if (state == ACPI_STATE_S4) 1550 AcpiEnable(); 1551 pmf_system_bus_resume(PMF_Q_NONE); 1552 AcpiLeaveSleepState((UINT8)state); 1553 pmf_system_resume(PMF_Q_NONE); 1554 } 1555 1556 break; 1557 case ACPI_STATE_S5: 1558 ret = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1559 if (ACPI_FAILURE(ret)) { 1560 aprint_error_dev(sc->sc_dev, 1561 "failed preparing to sleep (%s)\n", 1562 AcpiFormatException(ret)); 1563 break; 1564 } 1565 DELAY(1000000); 1566 acpi_sleepstate = state; 1567 acpi_md_OsDisableInterrupt(); 1568 AcpiEnterSleepState(ACPI_STATE_S5); 1569 aprint_error_dev(sc->sc_dev, "WARNING powerdown failed!\n"); 1570 break; 1571 } 1572 1573 acpi_sleepstate = ACPI_STATE_S0; 1574 return ret; 1575 } 1576 1577 #if defined(ACPI_ACTIVATE_DEV) 1578 /* XXX This very incomplete */ 1579 ACPI_STATUS 1580 acpi_allocate_resources(ACPI_HANDLE handle) 1581 { 1582 ACPI_BUFFER bufp, bufc, bufn; 1583 ACPI_RESOURCE *resp, *resc, *resn; 1584 ACPI_RESOURCE_IRQ *irq; 1585 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 1586 ACPI_STATUS rv; 1587 uint delta; 1588 1589 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 1590 if (ACPI_FAILURE(rv)) 1591 goto out; 1592 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 1593 if (ACPI_FAILURE(rv)) { 1594 goto out1; 1595 } 1596 1597 bufn.Length = 1000; 1598 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 1599 resp = bufp.Pointer; 1600 resc = bufc.Pointer; 1601 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 1602 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1603 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 1604 resp = ACPI_NEXT_RESOURCE(resp); 1605 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 1606 break; 1607 /* Found identical Id */ 1608 resn->Type = resc->Type; 1609 switch (resc->Type) { 1610 case ACPI_RESOURCE_TYPE_IRQ: 1611 memcpy(&resn->Data, &resp->Data, 1612 sizeof(ACPI_RESOURCE_IRQ)); 1613 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 1614 irq->Interrupts[0] = 1615 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 1616 Interrupts[irq->InterruptCount-1]; 1617 irq->InterruptCount = 1; 1618 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 1619 break; 1620 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 1621 memcpy(&resn->Data, &resp->Data, 1622 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 1623 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 1624 #if 0 1625 /* 1626 * XXX not duplicating the interrupt logic above 1627 * because its not clear what it accomplishes. 1628 */ 1629 xirq->Interrupts[0] = 1630 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 1631 Interrupts[irq->NumberOfInterrupts-1]; 1632 xirq->NumberOfInterrupts = 1; 1633 #endif 1634 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 1635 break; 1636 case ACPI_RESOURCE_TYPE_IO: 1637 memcpy(&resn->Data, &resp->Data, 1638 sizeof(ACPI_RESOURCE_IO)); 1639 resn->Length = resp->Length; 1640 break; 1641 default: 1642 printf("acpi_allocate_resources: res=%u\n", resc->Type); 1643 rv = AE_BAD_DATA; 1644 goto out2; 1645 } 1646 resc = ACPI_NEXT_RESOURCE(resc); 1647 resn = ACPI_NEXT_RESOURCE(resn); 1648 resp = ACPI_NEXT_RESOURCE(resp); 1649 delta = (UINT8 *)resn - (UINT8 *)bufn.Pointer; 1650 if (delta >= 1651 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 1652 bufn.Length *= 2; 1653 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 1654 M_ACPI, M_WAITOK); 1655 resn = (ACPI_RESOURCE *)((UINT8 *)bufn.Pointer + delta); 1656 } 1657 } 1658 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1659 printf("acpi_allocate_resources: resc not exhausted\n"); 1660 rv = AE_BAD_DATA; 1661 goto out3; 1662 } 1663 1664 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 1665 rv = AcpiSetCurrentResources(handle, &bufn); 1666 if (ACPI_FAILURE(rv)) { 1667 printf("acpi_allocate_resources: AcpiSetCurrentResources %s\n", 1668 AcpiFormatException(rv)); 1669 } 1670 1671 out3: 1672 free(bufn.Pointer, M_ACPI); 1673 out2: 1674 ACPI_FREE(bufc.Pointer); 1675 out1: 1676 ACPI_FREE(bufp.Pointer); 1677 out: 1678 return rv; 1679 } 1680 #endif /* ACPI_ACTIVATE_DEV */ 1681 1682 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1683 { 1684 const struct sysctlnode *node; 1685 const struct sysctlnode *ssnode; 1686 1687 if (sysctl_createv(clog, 0, NULL, NULL, 1688 CTLFLAG_PERMANENT, 1689 CTLTYPE_NODE, "hw", NULL, 1690 NULL, 0, NULL, 0, 1691 CTL_HW, CTL_EOL) != 0) 1692 return; 1693 1694 if (sysctl_createv(clog, 0, NULL, &node, 1695 CTLFLAG_PERMANENT, 1696 CTLTYPE_NODE, "acpi", NULL, 1697 NULL, 0, NULL, 0, 1698 CTL_HW, CTL_CREATE, CTL_EOL) != 0) 1699 return; 1700 1701 sysctl_createv(NULL, 0, NULL, NULL, CTLFLAG_READONLY, 1702 CTLTYPE_QUAD, "root", 1703 SYSCTL_DESCR("ACPI root pointer"), 1704 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1705 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL); 1706 sysctl_createv(NULL, 0, NULL, NULL, CTLFLAG_READONLY, 1707 CTLTYPE_STRING, "supported_states", 1708 SYSCTL_DESCR("Supported ACPI system states"), 1709 NULL, 0, acpi_supported_states, 0, 1710 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL); 1711 1712 /* ACPI sleepstate sysctl */ 1713 if (sysctl_createv(NULL, 0, NULL, &node, 1714 CTLFLAG_PERMANENT, 1715 CTLTYPE_NODE, "machdep", NULL, 1716 NULL, 0, NULL, 0, CTL_MACHDEP, CTL_EOL) != 0) 1717 return; 1718 if (sysctl_createv(NULL, 0, &node, &ssnode, 1719 CTLFLAG_READWRITE, CTLTYPE_INT, "sleep_state", 1720 NULL, sysctl_hw_acpi_sleepstate, 0, NULL, 0, CTL_CREATE, 1721 CTL_EOL) != 0) 1722 return; 1723 } 1724 1725 static int 1726 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1727 { 1728 int error, t; 1729 struct sysctlnode node; 1730 1731 node = *rnode; 1732 t = acpi_sleepstate; 1733 node.sysctl_data = &t; 1734 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1735 if (error || newp == NULL) 1736 return error; 1737 1738 if (acpi_softc == NULL) 1739 return ENOSYS; 1740 1741 acpi_enter_sleep_state(acpi_softc, t); 1742 1743 return 0; 1744 } 1745 1746 static ACPI_TABLE_HEADER * 1747 acpi_map_rsdt(void) 1748 { 1749 ACPI_PHYSICAL_ADDRESS paddr; 1750 ACPI_TABLE_RSDP *rsdp; 1751 1752 paddr = AcpiOsGetRootPointer(); 1753 if (paddr == 0) { 1754 printf("ACPI: couldn't get root pointer\n"); 1755 return NULL; 1756 } 1757 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1758 if (rsdp == NULL) { 1759 printf("ACPI: couldn't map RSDP\n"); 1760 return NULL; 1761 } 1762 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1763 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress; 1764 else 1765 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress; 1766 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1767 1768 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1769 } 1770 1771 static void 1772 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1773 { 1774 if (rsdt == NULL) 1775 return; 1776 1777 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1778 } 1779
Indexes created Mon Sep 22 13:09:51 GMT 2025