acpi.c revision 1.95
1/* $NetBSD: acpi.c,v 1.95 2006/09/26 01:50:43 jmcneill Exp $ */ 2 3/*- 4 * Copyright (c) 2003 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39/* 40 * Copyright 2001, 2003 Wasabi Systems, Inc. 41 * All rights reserved. 42 * 43 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 44 * 45 * Redistribution and use in source and binary forms, with or without 46 * modification, are permitted provided that the following conditions 47 * are met: 48 * 1. Redistributions of source code must retain the above copyright 49 * notice, this list of conditions and the following disclaimer. 50 * 2. Redistributions in binary form must reproduce the above copyright 51 * notice, this list of conditions and the following disclaimer in the 52 * documentation and/or other materials provided with the distribution. 53 * 3. All advertising materials mentioning features or use of this software 54 * must display the following acknowledgement: 55 * This product includes software developed for the NetBSD Project by 56 * Wasabi Systems, Inc. 57 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 58 * or promote products derived from this software without specific prior 59 * written permission. 60 * 61 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 62 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 63 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 64 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 65 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 66 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 67 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 68 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 69 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 70 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 71 * POSSIBILITY OF SUCH DAMAGE. 72 */ 73 74/* 75 * Autoconfiguration support for the Intel ACPI Component Architecture 76 * ACPI reference implementation. 77 */ 78 79#include <sys/cdefs.h> 80__KERNEL_RCSID(0, "$NetBSD: acpi.c,v 1.95 2006/09/26 01:50:43 jmcneill Exp $"); 81 82#include "opt_acpi.h" 83#include "opt_pcifixup.h" 84 85#include <sys/param.h> 86#include <sys/systm.h> 87#include <sys/device.h> 88#include <sys/malloc.h> 89#include <sys/kernel.h> 90#include <sys/proc.h> 91#include <sys/sysctl.h> 92 93#include <dev/acpi/acpica.h> 94#include <dev/acpi/acpireg.h> 95#include <dev/acpi/acpivar.h> 96#include <dev/acpi/acpi_osd.h> 97#include <dev/acpi/acpi_timer.h> 98#ifdef ACPIVERBOSE 99#include <dev/acpi/acpidevs_data.h> 100#endif 101 102#if defined(ACPI_PCI_FIXUP) 103#error The option ACPI_PCI_FIXUP has been obsoleted by PCI_INTR_FIXUP_DISABLED. Please adjust your kernel configuration file. 104#endif 105 106#ifdef PCI_INTR_FIXUP_DISABLED 107#include <dev/pci/pcidevs.h> 108#endif 109 110MALLOC_DECLARE(M_ACPI); 111 112#include <machine/acpi_machdep.h> 113 114#ifdef ACPI_DEBUGGER 115#define ACPI_DBGR_INIT 0x01 116#define ACPI_DBGR_TABLES 0x02 117#define ACPI_DBGR_ENABLE 0x04 118#define ACPI_DBGR_PROBE 0x08 119#define ACPI_DBGR_RUNNING 0x10 120 121static int acpi_dbgr = 0x00; 122#endif 123 124static int acpi_match(struct device *, struct cfdata *, void *); 125static void acpi_attach(struct device *, struct device *, void *); 126 127static int acpi_print(void *aux, const char *); 128 129static int sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS); 130 131extern struct cfdriver acpi_cd; 132 133CFATTACH_DECL(acpi, sizeof(struct acpi_softc), 134 acpi_match, acpi_attach, NULL, NULL); 135 136/* 137 * This is a flag we set when the ACPI subsystem is active. Machine 138 * dependent code may wish to skip other steps (such as attaching 139 * subsystems that ACPI supercedes) when ACPI is active. 140 */ 141int acpi_active; 142int acpi_force_load; 143 144/* 145 * Pointer to the ACPI subsystem's state. There can be only 146 * one ACPI instance. 147 */ 148struct acpi_softc *acpi_softc; 149 150/* 151 * Locking stuff. 152 */ 153static struct simplelock acpi_slock; 154static int acpi_locked; 155 156/* 157 * sysctl-related information 158 */ 159 160static int acpi_node = CTL_EOL; 161static uint64_t acpi_root_pointer; /* found as hw.acpi.root */ 162static int acpi_sleepstate = ACPI_STATE_S0; 163 164/* 165 * Prototypes. 166 */ 167static void acpi_shutdown(void *); 168static void acpi_build_tree(struct acpi_softc *); 169static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, UINT32, void *, void **); 170 171static void acpi_enable_fixed_events(struct acpi_softc *); 172 173/* 174 * acpi_probe: 175 * 176 * Probe for ACPI support. This is called by the 177 * machine-dependent ACPI front-end. All of the 178 * actual work is done by ACPICA. 179 * 180 * NOTE: This is not an autoconfiguration interface function. 181 */ 182int 183acpi_probe(void) 184{ 185 static int beenhere; 186 ACPI_STATUS rv; 187 188 if (beenhere != 0) 189 panic("acpi_probe: ACPI has already been probed"); 190 beenhere = 1; 191 192 simple_lock_init(&acpi_slock); 193 acpi_locked = 0; 194 195 /* 196 * Start up ACPICA. 197 */ 198#ifdef ACPI_DEBUGGER 199 if (acpi_dbgr & ACPI_DBGR_INIT) 200 acpi_osd_debugger(); 201#endif 202 203 rv = AcpiInitializeSubsystem(); 204 if (ACPI_FAILURE(rv)) { 205 printf("ACPI: unable to initialize ACPICA: %s\n", 206 AcpiFormatException(rv)); 207 return 0; 208 } 209 210#ifdef ACPI_DEBUGGER 211 if (acpi_dbgr & ACPI_DBGR_TABLES) 212 acpi_osd_debugger(); 213#endif 214 215 rv = AcpiLoadTables(); 216 if (ACPI_FAILURE(rv)) { 217 printf("ACPI: unable to load tables: %s\n", 218 AcpiFormatException(rv)); 219 return 0; 220 } 221 222 223 if (!acpi_force_load && (acpi_find_quirks() & ACPI_QUIRK_BROKEN)) { 224 printf("ACPI: BIOS implementation in listed as broken:\n"); 225 printf("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 226 "AslId <%4.4s,%08x>\n", 227 AcpiGbl_XSDT->OemId, AcpiGbl_XSDT->OemTableId, 228 AcpiGbl_XSDT->OemRevision, 229 AcpiGbl_XSDT->AslCompilerId, 230 AcpiGbl_XSDT->AslCompilerRevision); 231 printf("ACPI: not used. set acpi_force_load to use anyway.\n"); 232 return 0; 233 } 234 235 /* 236 * Looks like we have ACPI! 237 */ 238 239 return 1; 240} 241 242ACPI_STATUS 243acpi_OsGetRootPointer(UINT32 Flags, ACPI_POINTER *PhysicalAddress) 244{ 245 ACPI_STATUS rv; 246 247 /* 248 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 249 * 250 * IA-64: Use the EFI. 251 * 252 * We let MD code handle this since there are multiple 253 * ways to do it. 254 */ 255 256 rv = acpi_md_OsGetRootPointer(Flags, PhysicalAddress); 257 258 if (acpi_root_pointer == 0 && ACPI_SUCCESS(rv)) 259 acpi_root_pointer = 260 (uint64_t)PhysicalAddress->Pointer.Physical; 261 262 return rv; 263} 264 265/* 266 * acpi_match: 267 * 268 * Autoconfiguration `match' routine. 269 */ 270static int 271acpi_match(struct device *parent, struct cfdata *match, void *aux) 272{ 273 /* 274 * XXX Check other locators? Hard to know -- machine 275 * dependent code has already checked for the presence 276 * of ACPI by calling acpi_probe(), so I suppose we 277 * don't really have to do anything else. 278 */ 279 return 1; 280} 281 282/* 283 * acpi_attach: 284 * 285 * Autoconfiguration `attach' routine. Finish initializing 286 * ACPICA (some initialization was done in acpi_probe(), 287 * which was required to check for the presence of ACPI), 288 * and enable the ACPI subsystem. 289 */ 290static void 291acpi_attach(struct device *parent, struct device *self, void *aux) 292{ 293 struct acpi_softc *sc = (void *) self; 294 struct acpibus_attach_args *aa = aux; 295 ACPI_STATUS rv; 296 297 aprint_naive(": Advanced Configuration and Power Interface\n"); 298 aprint_normal(": Advanced Configuration and Power Interface\n"); 299 300 if (acpi_softc != NULL) 301 panic("acpi_attach: ACPI has already been attached"); 302 303 sysmon_power_settype("acpi"); 304 305 aprint_verbose("%s: using Intel ACPI CA subsystem version %08x\n", 306 sc->sc_dev.dv_xname, ACPI_CA_VERSION); 307 308 aprint_verbose("%s: X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 309 sc->sc_dev.dv_xname, 310 AcpiGbl_XSDT->OemId, AcpiGbl_XSDT->OemTableId, 311 AcpiGbl_XSDT->OemRevision, 312 AcpiGbl_XSDT->AslCompilerId, AcpiGbl_XSDT->AslCompilerRevision); 313 314 sc->sc_quirks = acpi_find_quirks(); 315 316 sc->sc_iot = aa->aa_iot; 317 sc->sc_memt = aa->aa_memt; 318 sc->sc_pc = aa->aa_pc; 319 sc->sc_pciflags = aa->aa_pciflags; 320 sc->sc_ic = aa->aa_ic; 321 322 acpi_softc = sc; 323 324 /* 325 * Bring ACPI on-line. 326 */ 327#ifdef ACPI_DEBUGGER 328 if (acpi_dbgr & ACPI_DBGR_ENABLE) 329 acpi_osd_debugger(); 330#endif 331 332 rv = AcpiEnableSubsystem(0); 333 if (ACPI_FAILURE(rv)) { 334 aprint_error("%s: unable to enable ACPI: %s\n", 335 sc->sc_dev.dv_xname, AcpiFormatException(rv)); 336 return; 337 } 338 339 /* early EC handler initialization if ECDT table is available */ 340#if NACPIEC > 0 341 acpiec_early_attach(&sc->sc_dev); 342#endif 343 344 rv = AcpiInitializeObjects(0); 345 if (ACPI_FAILURE(rv)) { 346 aprint_error("%s: unable to initialize ACPI objects: %s\n", 347 sc->sc_dev.dv_xname, AcpiFormatException(rv)); 348 return; 349 } 350 acpi_active = 1; 351 352 /* Our current state is "awake". */ 353 sc->sc_sleepstate = ACPI_STATE_S0; 354 355 /* Show SCI interrupt. */ 356 if (AcpiGbl_FADT != NULL) 357 aprint_verbose("%s: SCI interrupting at int %d\n", 358 sc->sc_dev.dv_xname, AcpiGbl_FADT->SciInt); 359 /* 360 * Check for fixed-hardware features. 361 */ 362 acpi_enable_fixed_events(sc); 363 acpitimer_init(); 364 365 /* 366 * Scan the namespace and build our device tree. 367 */ 368#ifdef ACPI_DEBUGGER 369 if (acpi_dbgr & ACPI_DBGR_PROBE) 370 acpi_osd_debugger(); 371#endif 372 acpi_md_callback((struct device *)sc); 373 acpi_build_tree(sc); 374 375 if (acpi_root_pointer != 0 && acpi_node != CTL_EOL) { 376 (void)sysctl_createv(NULL, 0, NULL, NULL, 377 CTLFLAG_IMMEDIATE, 378 CTLTYPE_QUAD, "root", NULL, NULL, 379 acpi_root_pointer, NULL, 0, 380 CTL_HW, acpi_node, CTL_CREATE, CTL_EOL); 381 } 382 383 384 /* 385 * Register a shutdown hook that disables certain ACPI 386 * events that might happen and confuse us while we're 387 * trying to shut down. 388 */ 389 sc->sc_sdhook = shutdownhook_establish(acpi_shutdown, sc); 390 if (sc->sc_sdhook == NULL) 391 aprint_error("%s: WARNING: unable to register shutdown hook\n", 392 sc->sc_dev.dv_xname); 393 394#ifdef ACPI_DEBUGGER 395 if (acpi_dbgr & ACPI_DBGR_RUNNING) 396 acpi_osd_debugger(); 397#endif 398} 399 400/* 401 * acpi_shutdown: 402 * 403 * Shutdown hook for ACPI -- disable some events that 404 * might confuse us. 405 */ 406static void 407acpi_shutdown(void *arg) 408{ 409 /* nothing */ 410} 411 412#if 0 413/* 414 * acpi_disable: 415 * 416 * Disable ACPI. 417 */ 418static ACPI_STATUS 419acpi_disable(struct acpi_softc *sc) 420{ 421 ACPI_STATUS rv = AE_OK; 422 423 if (acpi_active) { 424 rv = AcpiDisable(); 425 if (ACPI_SUCCESS(rv)) 426 acpi_active = 0; 427 } 428 return rv; 429} 430#endif 431 432struct acpi_make_devnode_state { 433 struct acpi_softc *softc; 434 struct acpi_scope *scope; 435}; 436 437/* 438 * acpi_build_tree: 439 * 440 * Scan relevant portions of the ACPI namespace and attach 441 * child devices. 442 */ 443static void 444acpi_build_tree(struct acpi_softc *sc) 445{ 446 static const char *scopes[] = { 447 "\\_PR_", /* ACPI 1.0 processor namespace */ 448 "\\_SB_", /* system bus namespace */ 449 "\\_SI_", /* system indicator namespace */ 450 "\\_TZ_", /* ACPI 1.0 thermal zone namespace */ 451 NULL, 452 }; 453 struct acpi_attach_args aa; 454 struct acpi_make_devnode_state state; 455 struct acpi_scope *as; 456 struct acpi_devnode *ad; 457 ACPI_HANDLE parent; 458 ACPI_STATUS rv; 459 int i; 460 461 TAILQ_INIT(&sc->sc_scopes); 462 463 state.softc = sc; 464 465 /* 466 * Scan the namespace and build our tree. 467 */ 468 for (i = 0; scopes[i] != NULL; i++) { 469 as = malloc(sizeof(*as), M_ACPI, M_WAITOK); 470 as->as_name = scopes[i]; 471 TAILQ_INIT(&as->as_devnodes); 472 473 TAILQ_INSERT_TAIL(&sc->sc_scopes, as, as_list); 474 475 state.scope = as; 476 477 rv = AcpiGetHandle(ACPI_ROOT_OBJECT, scopes[i], 478 &parent); 479 if (ACPI_SUCCESS(rv)) { 480 AcpiWalkNamespace(ACPI_TYPE_ANY, parent, 100, 481 acpi_make_devnode, &state, NULL); 482 } 483 484 /* Now, for this namespace, try and attach the devices. */ 485 TAILQ_FOREACH(ad, &as->as_devnodes, ad_list) { 486 aa.aa_node = ad; 487 aa.aa_iot = sc->sc_iot; 488 aa.aa_memt = sc->sc_memt; 489 aa.aa_pc = sc->sc_pc; 490 aa.aa_pciflags = sc->sc_pciflags; 491 aa.aa_ic = sc->sc_ic; 492 493 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) { 494 /* 495 * XXX We only attach devices which are: 496 * 497 * - present 498 * - enabled 499 * - functioning properly 500 * 501 * However, if enabled, it's decoding resources, 502 * so we should claim them, if possible. 503 * Requires changes to bus_space(9). 504 */ 505 if ((ad->ad_devinfo->Valid & ACPI_VALID_STA) == 506 ACPI_VALID_STA && 507 (ad->ad_devinfo->CurrentStatus & 508 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED| 509 ACPI_STA_DEV_OK)) != 510 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED| 511 ACPI_STA_DEV_OK)) 512 continue; 513 514 /* 515 * XXX Same problem as above... 516 */ 517 if ((ad->ad_devinfo->Valid & ACPI_VALID_HID) 518 == 0) 519 continue; 520 } 521 522 ad->ad_device = config_found_ia(&sc->sc_dev, 523 "acpinodebus", &aa, acpi_print); 524 } 525 } 526 config_found_ia(&sc->sc_dev, "acpiapmbus", NULL, NULL); 527} 528 529#ifdef ACPI_ACTIVATE_DEV 530static void 531acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 532{ 533 ACPI_STATUS rv; 534 ACPI_BUFFER buf; 535 536 buf.Pointer = NULL; 537 buf.Length = ACPI_ALLOCATE_BUFFER; 538 539#ifdef ACPI_DEBUG 540 aprint_normal("acpi_activate_device: %s, old status=%x\n", 541 (*di)->HardwareId.Value, (*di)->CurrentStatus); 542#endif 543 544 rv = acpi_allocate_resources(handle); 545 if (ACPI_FAILURE(rv)) { 546 aprint_error("acpi: activate failed for %s\n", 547 (*di)->HardwareId.Value); 548 } else { 549 aprint_normal("acpi: activated %s\n", (*di)->HardwareId.Value); 550 } 551 552 (void)AcpiGetObjectInfo(handle, &buf); 553 AcpiOsFree(*di); 554 *di = buf.Pointer; 555 556#ifdef ACPI_DEBUG 557 aprint_normal("acpi_activate_device: %s, new status=%x\n", 558 (*di)->HardwareId.Value, (*di)->CurrentStatus); 559#endif 560} 561#endif /* ACPI_ACTIVATE_DEV */ 562 563/* 564 * acpi_make_devnode: 565 * 566 * Make an ACPI devnode. 567 */ 568static ACPI_STATUS 569acpi_make_devnode(ACPI_HANDLE handle, UINT32 level, void *context, 570 void **status) 571{ 572 struct acpi_make_devnode_state *state = context; 573#if defined(ACPI_DEBUG) || defined(ACPI_EXTRA_DEBUG) 574 struct acpi_softc *sc = state->softc; 575#endif 576 struct acpi_scope *as = state->scope; 577 struct acpi_devnode *ad; 578 ACPI_OBJECT_TYPE type; 579 ACPI_BUFFER buf; 580 ACPI_DEVICE_INFO *devinfo; 581 ACPI_STATUS rv; 582 583 rv = AcpiGetType(handle, &type); 584 if (ACPI_SUCCESS(rv)) { 585 buf.Pointer = NULL; 586 buf.Length = ACPI_ALLOCATE_BUFFER; 587 rv = AcpiGetObjectInfo(handle, &buf); 588 if (ACPI_FAILURE(rv)) { 589#ifdef ACPI_DEBUG 590 aprint_normal("%s: AcpiGetObjectInfo failed: %s\n", 591 sc->sc_dev.dv_xname, AcpiFormatException(rv)); 592#endif 593 goto out; /* XXX why return OK */ 594 } 595 596 devinfo = buf.Pointer; 597 598 switch (type) { 599 case ACPI_TYPE_DEVICE: 600#ifdef ACPI_ACTIVATE_DEV 601 if ((devinfo->Valid & (ACPI_VALID_STA|ACPI_VALID_HID)) == 602 (ACPI_VALID_STA|ACPI_VALID_HID) && 603 (devinfo->CurrentStatus & 604 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED)) == 605 ACPI_STA_DEV_PRESENT) 606 acpi_activate_device(handle, &devinfo); 607 608 /* FALLTHROUGH */ 609#endif 610 611 case ACPI_TYPE_PROCESSOR: 612 case ACPI_TYPE_THERMAL: 613 case ACPI_TYPE_POWER: 614 ad = malloc(sizeof(*ad), M_ACPI, M_NOWAIT|M_ZERO); 615 if (ad == NULL) 616 return AE_NO_MEMORY; 617 618 ad->ad_devinfo = devinfo; 619 ad->ad_handle = handle; 620 ad->ad_level = level; 621 ad->ad_scope = as; 622 ad->ad_type = type; 623 624 TAILQ_INSERT_TAIL(&as->as_devnodes, ad, ad_list); 625 626 if ((ad->ad_devinfo->Valid & ACPI_VALID_HID) == 0) 627 goto out; 628 629#ifdef ACPI_EXTRA_DEBUG 630 aprint_normal("%s: HID %s found in scope %s level %d\n", 631 sc->sc_dev.dv_xname, 632 ad->ad_devinfo->HardwareId.Value, 633 as->as_name, ad->ad_level); 634 if (ad->ad_devinfo->Valid & ACPI_VALID_UID) 635 aprint_normal(" UID %s\n", 636 ad->ad_devinfo->UniqueId.Value); 637 if (ad->ad_devinfo->Valid & ACPI_VALID_ADR) 638 aprint_normal(" ADR 0x%016qx\n", 639 ad->ad_devinfo->Address); 640 if (ad->ad_devinfo->Valid & ACPI_VALID_STA) 641 aprint_normal(" STA 0x%08x\n", 642 ad->ad_devinfo->CurrentStatus); 643#endif 644 } 645 } 646 out: 647 return AE_OK; 648} 649 650/* 651 * acpi_print: 652 * 653 * Autoconfiguration print routine for ACPI node bus. 654 */ 655static int 656acpi_print(void *aux, const char *pnp) 657{ 658 struct acpi_attach_args *aa = aux; 659 ACPI_STATUS rv; 660 661 if (pnp) { 662 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 663 char *pnpstr = 664 aa->aa_node->ad_devinfo->HardwareId.Value; 665 char *str; 666 667 aprint_normal("%s ", pnpstr); 668 rv = acpi_eval_string(aa->aa_node->ad_handle, 669 "_STR", &str); 670 if (ACPI_SUCCESS(rv)) { 671 aprint_normal("[%s] ", str); 672 AcpiOsFree(str); 673 } 674#ifdef ACPIVERBOSE 675 else { 676 int i; 677 678 for (i = 0; i < sizeof(acpi_knowndevs) / 679 sizeof(acpi_knowndevs[0]); i++) { 680 if (strcmp(acpi_knowndevs[i].pnp, 681 pnpstr) == 0) { 682 aprint_normal("[%s] ", 683 acpi_knowndevs[i].str); 684 } 685 } 686 } 687 688#endif 689 } else { 690 aprint_normal("ACPI Object Type '%s' (0x%02x) ", 691 AcpiUtGetTypeName(aa->aa_node->ad_devinfo->Type), 692 aa->aa_node->ad_devinfo->Type); 693 } 694 aprint_normal("at %s", pnp); 695 } else { 696 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 697 aprint_normal(" (%s", aa->aa_node->ad_devinfo->HardwareId.Value); 698 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_UID) { 699 const char *uid; 700 701 uid = aa->aa_node->ad_devinfo->UniqueId.Value; 702 if (uid[0] == '\0') 703 uid = "<null>"; 704 aprint_normal("-%s", uid); 705 } 706 aprint_normal(")"); 707 } 708 } 709 710 return UNCONF; 711} 712 713/***************************************************************************** 714 * ACPI fixed-hardware feature handlers 715 *****************************************************************************/ 716 717static UINT32 acpi_fixed_button_handler(void *); 718static void acpi_fixed_button_pressed(void *); 719 720/* 721 * acpi_enable_fixed_events: 722 * 723 * Enable any fixed-hardware feature handlers. 724 */ 725static void 726acpi_enable_fixed_events(struct acpi_softc *sc) 727{ 728 static int beenhere; 729 ACPI_STATUS rv; 730 731 KASSERT(beenhere == 0); 732 beenhere = 1; 733 734 /* 735 * Check for fixed-hardware buttons. 736 */ 737 738 if (AcpiGbl_FADT != NULL && AcpiGbl_FADT->PwrButton == 0) { 739 aprint_normal("%s: fixed-feature power button present\n", 740 sc->sc_dev.dv_xname); 741 sc->sc_smpsw_power.smpsw_name = sc->sc_dev.dv_xname; 742 sc->sc_smpsw_power.smpsw_type = PSWITCH_TYPE_POWER; 743 if (sysmon_pswitch_register(&sc->sc_smpsw_power) != 0) { 744 aprint_error("%s: unable to register fixed power " 745 "button with sysmon\n", sc->sc_dev.dv_xname); 746 } else { 747 rv = AcpiInstallFixedEventHandler( 748 ACPI_EVENT_POWER_BUTTON, 749 acpi_fixed_button_handler, &sc->sc_smpsw_power); 750 if (ACPI_FAILURE(rv)) { 751 aprint_error("%s: unable to install handler " 752 "for fixed power button: %s\n", 753 sc->sc_dev.dv_xname, 754 AcpiFormatException(rv)); 755 } 756 } 757 } 758 759 if (AcpiGbl_FADT != NULL && AcpiGbl_FADT->SleepButton == 0) { 760 aprint_normal("%s: fixed-feature sleep button present\n", 761 sc->sc_dev.dv_xname); 762 sc->sc_smpsw_sleep.smpsw_name = sc->sc_dev.dv_xname; 763 sc->sc_smpsw_sleep.smpsw_type = PSWITCH_TYPE_SLEEP; 764 if (sysmon_pswitch_register(&sc->sc_smpsw_power) != 0) { 765 aprint_error("%s: unable to register fixed sleep " 766 "button with sysmon\n", sc->sc_dev.dv_xname); 767 } else { 768 rv = AcpiInstallFixedEventHandler( 769 ACPI_EVENT_SLEEP_BUTTON, 770 acpi_fixed_button_handler, &sc->sc_smpsw_sleep); 771 if (ACPI_FAILURE(rv)) { 772 aprint_error("%s: unable to install handler " 773 "for fixed sleep button: %s\n", 774 sc->sc_dev.dv_xname, 775 AcpiFormatException(rv)); 776 } 777 } 778 } 779} 780 781/* 782 * acpi_fixed_button_handler: 783 * 784 * Event handler for the fixed buttons. 785 */ 786static UINT32 787acpi_fixed_button_handler(void *context) 788{ 789 struct sysmon_pswitch *smpsw = context; 790 int rv; 791 792#ifdef ACPI_BUT_DEBUG 793 printf("%s: fixed button handler\n", smpsw->smpsw_name); 794#endif 795 796 rv = AcpiOsQueueForExecution(OSD_PRIORITY_LO, 797 acpi_fixed_button_pressed, smpsw); 798 if (ACPI_FAILURE(rv)) 799 printf("%s: WARNING: unable to queue fixed button pressed " 800 "callback: %s\n", smpsw->smpsw_name, 801 AcpiFormatException(rv)); 802 803 return ACPI_INTERRUPT_HANDLED; 804} 805 806/* 807 * acpi_fixed_button_pressed: 808 * 809 * Deal with a fixed button being pressed. 810 */ 811static void 812acpi_fixed_button_pressed(void *context) 813{ 814 struct sysmon_pswitch *smpsw = context; 815 816#ifdef ACPI_BUT_DEBUG 817 printf("%s: fixed button pressed, calling sysmon\n", 818 smpsw->smpsw_name); 819#endif 820 821 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 822} 823 824/***************************************************************************** 825 * ACPI utility routines. 826 *****************************************************************************/ 827 828/* 829 * acpi_eval_integer: 830 * 831 * Evaluate an integer object. 832 */ 833ACPI_STATUS 834acpi_eval_integer(ACPI_HANDLE handle, const char *path, ACPI_INTEGER *valp) 835{ 836 ACPI_STATUS rv; 837 ACPI_BUFFER buf; 838 ACPI_OBJECT param; 839 840 if (handle == NULL) 841 handle = ACPI_ROOT_OBJECT; 842 843 buf.Pointer = ¶m; 844 buf.Length = sizeof(param); 845 846 rv = AcpiEvaluateObjectTyped(handle, path, NULL, &buf, ACPI_TYPE_INTEGER); 847 if (ACPI_SUCCESS(rv)) 848 *valp = param.Integer.Value; 849 850 return rv; 851} 852 853/* 854 * acpi_eval_string: 855 * 856 * Evaluate a (Unicode) string object. 857 */ 858ACPI_STATUS 859acpi_eval_string(ACPI_HANDLE handle, const char *path, char **stringp) 860{ 861 ACPI_STATUS rv; 862 ACPI_BUFFER buf; 863 864 if (handle == NULL) 865 handle = ACPI_ROOT_OBJECT; 866 867 buf.Pointer = NULL; 868 buf.Length = ACPI_ALLOCATE_BUFFER; 869 870 rv = AcpiEvaluateObjectTyped(handle, path, NULL, &buf, ACPI_TYPE_STRING); 871 if (ACPI_SUCCESS(rv)) { 872 ACPI_OBJECT *param = buf.Pointer; 873 const char *ptr = param->String.Pointer; 874 size_t len = param->String.Length; 875 if ((*stringp = AcpiOsAllocate(len)) == NULL) 876 rv = AE_NO_MEMORY; 877 else 878 (void)memcpy(*stringp, ptr, len); 879 AcpiOsFree(param); 880 } 881 882 return rv; 883} 884 885 886/* 887 * acpi_eval_struct: 888 * 889 * Evaluate a more complex structure. 890 * Caller must free buf.Pointer by AcpiOsFree(). 891 */ 892ACPI_STATUS 893acpi_eval_struct(ACPI_HANDLE handle, const char *path, ACPI_BUFFER *bufp) 894{ 895 ACPI_STATUS rv; 896 897 if (handle == NULL) 898 handle = ACPI_ROOT_OBJECT; 899 900 bufp->Pointer = NULL; 901 bufp->Length = ACPI_ALLOCATE_BUFFER; 902 903 rv = AcpiEvaluateObject(handle, path, NULL, bufp); 904 905 return rv; 906} 907 908/* 909 * acpi_foreach_package_object: 910 * 911 * Iterate over all objects in a in a packages and pass then all 912 * to a function. If the called function returns non AE_OK, the 913 * iteration is stopped and that value is returned. 914 */ 915 916ACPI_STATUS 917acpi_foreach_package_object(ACPI_OBJECT *pkg, 918 ACPI_STATUS (*func)(ACPI_OBJECT *, void *), 919 void *arg) 920{ 921 ACPI_STATUS rv = AE_OK; 922 int i; 923 924 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE) 925 return AE_BAD_PARAMETER; 926 927 for (i = 0; i < pkg->Package.Count; i++) { 928 rv = (*func)(&pkg->Package.Elements[i], arg); 929 if (ACPI_FAILURE(rv)) 930 break; 931 } 932 933 return rv; 934} 935 936const char * 937acpi_name(ACPI_HANDLE handle) 938{ 939 static char buffer[80]; 940 ACPI_BUFFER buf; 941 ACPI_STATUS rv; 942 943 buf.Length = sizeof(buffer); 944 buf.Pointer = buffer; 945 946 rv = AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf); 947 if (ACPI_FAILURE(rv)) 948 return "(unknown acpi path)"; 949 return buffer; 950} 951 952/* 953 * acpi_get: 954 * 955 * Fetch data info the specified (empty) ACPI buffer. 956 * Caller must free buf.Pointer by AcpiOsFree(). 957 */ 958ACPI_STATUS 959acpi_get(ACPI_HANDLE handle, ACPI_BUFFER *buf, 960 ACPI_STATUS (*getit)(ACPI_HANDLE, ACPI_BUFFER *)) 961{ 962 buf->Pointer = NULL; 963 buf->Length = ACPI_ALLOCATE_BUFFER; 964 965 return (*getit)(handle, buf); 966} 967 968 969/* 970 * acpi_match_hid 971 * 972 * Match given ids against _HID and _CIDs 973 */ 974int 975acpi_match_hid(ACPI_DEVICE_INFO *ad, const char * const *ids) 976{ 977 int i; 978 979 while (*ids) { 980 if (ad->Valid & ACPI_VALID_HID) { 981 if (pmatch(ad->HardwareId.Value, *ids, NULL) == 2) 982 return 1; 983 } 984 985 if (ad->Valid & ACPI_VALID_CID) { 986 for (i = 0; i < ad->CompatibilityId.Count; i++) { 987 if (pmatch(ad->CompatibilityId.Id[i].Value, *ids, NULL) == 2) 988 return 1; 989 } 990 } 991 ids++; 992 } 993 994 return 0; 995} 996 997/* 998 * acpi_set_wake_gpe 999 * 1000 * Set GPE as both Runtime and Wake 1001 */ 1002void 1003acpi_set_wake_gpe(ACPI_HANDLE handle) 1004{ 1005 ACPI_BUFFER buf; 1006 ACPI_STATUS rv; 1007 ACPI_OBJECT *p, *elt; 1008 1009 rv = acpi_eval_struct(handle, METHOD_NAME__PRW, &buf); 1010 if (ACPI_FAILURE(rv)) 1011 return; /* just ignore */ 1012 1013 p = buf.Pointer; 1014 if (p->Type != ACPI_TYPE_PACKAGE || p->Package.Count < 2) 1015 goto out; /* just ignore */ 1016 1017 elt = p->Package.Elements; 1018 1019 /* TBD: package support */ 1020 AcpiSetGpeType(NULL, elt[0].Integer.Value, ACPI_GPE_TYPE_WAKE_RUN); 1021 AcpiEnableGpe(NULL, elt[0].Integer.Value, ACPI_NOT_ISR); 1022 1023 out: 1024 AcpiOsFree(buf.Pointer); 1025} 1026 1027 1028/***************************************************************************** 1029 * ACPI sleep support. 1030 *****************************************************************************/ 1031 1032static int 1033is_available_state(struct acpi_softc *sc, int state) 1034{ 1035 UINT8 type_a, type_b; 1036 1037 return ACPI_SUCCESS(AcpiGetSleepTypeData((UINT8)state, 1038 &type_a, &type_b)); 1039} 1040 1041/* 1042 * acpi_enter_sleep_state: 1043 * 1044 * enter to the specified sleep state. 1045 */ 1046 1047ACPI_STATUS 1048acpi_enter_sleep_state(struct acpi_softc *sc, int state) 1049{ 1050 int s; 1051 ACPI_STATUS ret = AE_OK; 1052 1053 if (state == acpi_sleepstate) 1054 return AE_OK; 1055 1056 aprint_normal("%s: entering state %d\n", sc->sc_dev.dv_xname, state); 1057 1058 switch (state) { 1059 case ACPI_STATE_S0: 1060 break; 1061 case ACPI_STATE_S1: 1062 case ACPI_STATE_S2: 1063 case ACPI_STATE_S3: 1064 case ACPI_STATE_S4: 1065 if (!is_available_state(sc, state)) { 1066 aprint_error("%s: cannot enter the sleep state (%d).\n", 1067 sc->sc_dev.dv_xname, state); 1068 break; 1069 } 1070 ret = AcpiEnterSleepStatePrep(state); 1071 if (ACPI_FAILURE(ret)) { 1072 aprint_error("%s: failed preparing to sleep (%s)\n", 1073 sc->sc_dev.dv_xname, AcpiFormatException(ret)); 1074 break; 1075 } 1076 acpi_sleepstate = state; 1077 if (state == ACPI_STATE_S1) { 1078 /* just enter the state */ 1079 acpi_md_OsDisableInterrupt(); 1080 AcpiEnterSleepState((UINT8)state); 1081 } else { 1082 /* XXX: powerhooks(9) framework is too poor to 1083 * support ACPI sleep state... 1084 */ 1085 dopowerhooks(PWR_SOFTSUSPEND); 1086 s = splhigh(); 1087 dopowerhooks(PWR_SUSPEND); 1088 acpi_md_sleep(state); 1089 dopowerhooks(PWR_RESUME); 1090 splx(s); 1091 dopowerhooks(PWR_SOFTRESUME); 1092 if (state==ACPI_STATE_S4) 1093 AcpiEnable(); 1094 } 1095 AcpiLeaveSleepState((UINT8)state); 1096 break; 1097 case ACPI_STATE_S5: 1098 ret = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1099 if (ACPI_FAILURE(ret)) { 1100 aprint_error("%s: failed preparing to sleep (%s)\n", 1101 sc->sc_dev.dv_xname, AcpiFormatException(ret)); 1102 break; 1103 } 1104 acpi_sleepstate = state; 1105 acpi_md_OsDisableInterrupt(); 1106 AcpiEnterSleepState(ACPI_STATE_S5); 1107 aprint_error("%s: WARNING powerdown failed!\n", 1108 sc->sc_dev.dv_xname); 1109 break; 1110 } 1111 1112 aprint_normal("%s: resuming\n", sc->sc_dev.dv_xname); 1113 acpi_sleepstate = ACPI_STATE_S0; 1114 return ret; 1115} 1116 1117#if defined(ACPI_ACTIVATE_DEV) 1118/* XXX This very incomplete */ 1119ACPI_STATUS 1120acpi_allocate_resources(ACPI_HANDLE handle) 1121{ 1122 ACPI_BUFFER bufp, bufc, bufn; 1123 ACPI_RESOURCE *resp, *resc, *resn; 1124 ACPI_RESOURCE_IRQ *irq; 1125 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 1126 ACPI_STATUS rv; 1127 uint delta; 1128 1129 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 1130 if (ACPI_FAILURE(rv)) 1131 goto out; 1132 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 1133 if (ACPI_FAILURE(rv)) { 1134 goto out1; 1135 } 1136 1137 bufn.Length = 1000; 1138 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 1139 resp = bufp.Pointer; 1140 resc = bufc.Pointer; 1141 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 1142 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1143 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 1144 resp = ACPI_NEXT_RESOURCE(resp); 1145 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 1146 break; 1147 /* Found identical Id */ 1148 resn->Type = resc->Type; 1149 switch (resc->Type) { 1150 case ACPI_RESOURCE_TYPE_IRQ: 1151 memcpy(&resn->Data, &resp->Data, 1152 sizeof(ACPI_RESOURCE_IRQ)); 1153 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 1154 irq->Interrupts[0] = 1155 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 1156 Interrupts[irq->InterruptCount-1]; 1157 irq->InterruptCount = 1; 1158 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 1159 break; 1160 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 1161 memcpy(&resn->Data, &resp->Data, 1162 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 1163 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 1164#if 0 1165 /* 1166 * XXX not duplicating the interrupt logic above 1167 * because its not clear what it accomplishes. 1168 */ 1169 xirq->Interrupts[0] = 1170 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 1171 Interrupts[irq->NumberOfInterrupts-1]; 1172 xirq->NumberOfInterrupts = 1; 1173#endif 1174 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 1175 break; 1176 case ACPI_RESOURCE_TYPE_IO: 1177 memcpy(&resn->Data, &resp->Data, 1178 sizeof(ACPI_RESOURCE_IO)); 1179 resn->Length = resp->Length; 1180 break; 1181 default: 1182 printf("acpi_allocate_resources: res=%d\n", resc->Type); 1183 rv = AE_BAD_DATA; 1184 goto out2; 1185 } 1186 resc = ACPI_NEXT_RESOURCE(resc); 1187 resn = ACPI_NEXT_RESOURCE(resn); 1188 resp = ACPI_NEXT_RESOURCE(resp); 1189 delta = (UINT8 *)resn - (UINT8 *)bufn.Pointer; 1190 if (delta >= 1191 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 1192 bufn.Length *= 2; 1193 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 1194 M_ACPI, M_WAITOK); 1195 resn = (ACPI_RESOURCE *)((UINT8 *)bufn.Pointer + delta); 1196 } 1197 } 1198 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1199 printf("acpi_allocate_resources: resc not exhausted\n"); 1200 rv = AE_BAD_DATA; 1201 goto out3; 1202 } 1203 1204 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 1205 rv = AcpiSetCurrentResources(handle, &bufn); 1206 if (ACPI_FAILURE(rv)) { 1207 printf("acpi_allocate_resources: AcpiSetCurrentResources %s\n", 1208 AcpiFormatException(rv)); 1209 } 1210 1211out3: 1212 free(bufn.Pointer, M_ACPI); 1213out2: 1214 AcpiOsFree(bufc.Pointer); 1215out1: 1216 AcpiOsFree(bufp.Pointer); 1217out: 1218 return rv; 1219} 1220#endif /* ACPI_ACTIVATE_DEV */ 1221 1222SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1223{ 1224 const struct sysctlnode *node; 1225 const struct sysctlnode *ssnode; 1226 1227 if (sysctl_createv(clog, 0, NULL, NULL, 1228 CTLFLAG_PERMANENT, 1229 CTLTYPE_NODE, "hw", NULL, 1230 NULL, 0, NULL, 0, 1231 CTL_HW, CTL_EOL) != 0) 1232 return; 1233 1234 if (sysctl_createv(clog, 0, NULL, &node, 1235 CTLFLAG_PERMANENT, 1236 CTLTYPE_NODE, "acpi", NULL, 1237 NULL, 0, NULL, 0, 1238 CTL_HW, CTL_CREATE, CTL_EOL) != 0) 1239 return; 1240 1241 acpi_node = node->sysctl_num; 1242 1243 /* ACPI sleepstate sysctl */ 1244 if (sysctl_createv(NULL, 0, NULL, &node, 1245 CTLFLAG_PERMANENT, 1246 CTLTYPE_NODE, "machdep", NULL, 1247 NULL, 0, NULL, 0, CTL_MACHDEP, CTL_EOL) != 0) 1248 return; 1249 if (sysctl_createv(NULL, 0, &node, &ssnode, 1250 CTLFLAG_READWRITE, CTLTYPE_INT, "sleep_state", 1251 NULL, sysctl_hw_acpi_sleepstate, 0, NULL, 0, CTL_CREATE, 1252 CTL_EOL) != 0) 1253 return; 1254} 1255 1256static int 1257sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1258{ 1259 int error, t; 1260 struct sysctlnode node; 1261 1262 node = *rnode; 1263 t = acpi_sleepstate; 1264 node.sysctl_data = &t; 1265 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1266 if (error || newp == NULL) 1267 return error; 1268 1269 if (acpi_softc == NULL) 1270 return ENOSYS; 1271 1272 acpi_enter_sleep_state(acpi_softc, t); 1273 1274 return 0; 1275} 1276