acpi.c revision 1.32
1/* $NetBSD: acpi.c,v 1.32 2003/02/14 11:05:39 tshiozak Exp $ */ 2 3/* 4 * Copyright 2001 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38/* 39 * Autoconfiguration support for the Intel ACPI Component Architecture 40 * ACPI reference implementation. 41 */ 42 43#include <sys/cdefs.h> 44__KERNEL_RCSID(0, "$NetBSD: acpi.c,v 1.32 2003/02/14 11:05:39 tshiozak Exp $"); 45 46#include "opt_acpi.h" 47 48#include <sys/param.h> 49#include <sys/systm.h> 50#include <sys/device.h> 51#include <sys/malloc.h> 52#include <sys/kernel.h> 53#include <sys/proc.h> 54 55#include <dev/acpi/acpica.h> 56#include <dev/acpi/acpireg.h> 57#include <dev/acpi/acpivar.h> 58#include <dev/acpi/acpi_osd.h> 59#ifdef ACPIVERBOSE 60#include <dev/acpi/acpidevs_data.h> 61#endif 62 63#ifndef ACPI_PCI_FIXUP 64#define ACPI_PCI_FIXUP 1 65#endif 66 67#ifndef ACPI_ACTIVATE_DEV 68#define ACPI_ACTIVATE_DEV 0 69#endif 70 71#if ACPI_PCI_FIXUP 72#include <dev/acpi/acpica/Subsystem/acnamesp.h> /* AcpiNsGetNodeByPath() */ 73#include <dev/pci/pcidevs.h> 74#endif 75 76#include <machine/acpi_machdep.h> 77 78#ifdef ENABLE_DEBUGGER 79#define ACPI_DBGR_INIT 0x01 80#define ACPI_DBGR_TABLES 0x02 81#define ACPI_DBGR_ENABLE 0x04 82#define ACPI_DBGR_PROBE 0x08 83#define ACPI_DBGR_RUNNING 0x10 84 85int acpi_dbgr = 0x00; 86#endif 87 88int acpi_match(struct device *, struct cfdata *, void *); 89void acpi_attach(struct device *, struct device *, void *); 90 91int acpi_print(void *aux, const char *); 92 93extern struct cfdriver acpi_cd; 94 95CFATTACH_DECL(acpi, sizeof(struct acpi_softc), 96 acpi_match, acpi_attach, NULL, NULL); 97 98/* 99 * This is a flag we set when the ACPI subsystem is active. Machine 100 * dependent code may wish to skip other steps (such as attaching 101 * subsystems that ACPI supercedes) when ACPI is active. 102 */ 103int acpi_active; 104 105/* 106 * Pointer to the ACPI subsystem's state. There can be only 107 * one ACPI instance. 108 */ 109struct acpi_softc *acpi_softc; 110 111/* 112 * Locking stuff. 113 */ 114static struct simplelock acpi_slock; 115static int acpi_locked; 116 117/* 118 * Prototypes. 119 */ 120void acpi_shutdown(void *); 121ACPI_STATUS acpi_disable(struct acpi_softc *sc); 122void acpi_build_tree(struct acpi_softc *); 123ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, UINT32, void *, void **); 124 125void acpi_enable_fixed_events(struct acpi_softc *); 126#if ACPI_PCI_FIXUP 127void acpi_pci_fixup(struct acpi_softc *); 128#endif 129#if ACPI_PCI_FIXUP || ACPI_ACTIVATE_DEV 130ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE handle); 131#endif 132 133/* 134 * acpi_probe: 135 * 136 * Probe for ACPI support. This is called by the 137 * machine-dependent ACPI front-end. All of the 138 * actual work is done by ACPICA. 139 * 140 * NOTE: This is not an autoconfiguration interface function. 141 */ 142int 143acpi_probe(void) 144{ 145 static int beenhere; 146 ACPI_STATUS rv; 147 148 if (beenhere != 0) 149 panic("acpi_probe: ACPI has already been probed"); 150 beenhere = 1; 151 152 simple_lock_init(&acpi_slock); 153 acpi_locked = 0; 154 155 /* 156 * Start up ACPICA. 157 */ 158#ifdef ENABLE_DEBUGGER 159 if (acpi_dbgr & ACPI_DBGR_INIT) 160 acpi_osd_debugger(); 161#endif 162 163 rv = AcpiInitializeSubsystem(); 164 if (rv != AE_OK) { 165 printf("ACPI: unable to initialize ACPICA: %d\n", rv); 166 return (0); 167 } 168 169#ifdef ENABLE_DEBUGGER 170 if (acpi_dbgr & ACPI_DBGR_TABLES) 171 acpi_osd_debugger(); 172#endif 173 174 rv = AcpiLoadTables(); 175 if (rv != AE_OK) { 176 printf("ACPI: unable to load tables: %d\n", rv); 177 return (0); 178 } 179 180 /* 181 * Looks like we have ACPI! 182 */ 183 184 return (1); 185} 186 187/* 188 * acpi_match: 189 * 190 * Autoconfiguration `match' routine. 191 */ 192int 193acpi_match(struct device *parent, struct cfdata *match, void *aux) 194{ 195 struct acpibus_attach_args *aa = aux; 196 197 if (strcmp(aa->aa_busname, acpi_cd.cd_name) != 0) 198 return (0); 199 200 /* 201 * XXX Check other locators? Hard to know -- machine 202 * dependent code has already checked for the presence 203 * of ACPI by calling acpi_probe(), so I suppose we 204 * don't really have to do anything else. 205 */ 206 return (1); 207} 208 209/* 210 * acpi_attach: 211 * 212 * Autoconfiguration `attach' routine. Finish initializing 213 * ACPICA (some initialization was done in acpi_probe(), 214 * which was required to check for the presence of ACPI), 215 * and enable the ACPI subsystem. 216 */ 217void 218acpi_attach(struct device *parent, struct device *self, void *aux) 219{ 220 struct acpi_softc *sc = (void *) self; 221 struct acpibus_attach_args *aa = aux; 222 ACPI_TABLE_HEADER *ap = &AcpiGbl_XSDT->Header; 223 ACPI_STATUS rv; 224 225 printf("\n"); 226 227 if (acpi_softc != NULL) 228 panic("acpi_attach: ACPI has already been attached"); 229 230 printf("%s: X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 231 sc->sc_dev.dv_xname, 232 ap->OemId, ap->OemTableId, ap->OemRevision, 233 ap->AslCompilerId, ap->AslCompilerRevision); 234 235 sc->sc_iot = aa->aa_iot; 236 sc->sc_memt = aa->aa_memt; 237 sc->sc_pc = aa->aa_pc; 238 sc->sc_pciflags = aa->aa_pciflags; 239 sc->sc_ic = aa->aa_ic; 240 241 acpi_softc = sc; 242 243 /* 244 * Install the default address space handlers. 245 */ 246 247 rv = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, 248 ACPI_ADR_SPACE_SYSTEM_MEMORY, ACPI_DEFAULT_HANDLER, NULL, NULL); 249 if (rv != AE_OK) { 250 printf("%s: unable to install SYSTEM MEMORY handler: %d\n", 251 sc->sc_dev.dv_xname, rv); 252 return; 253 } 254 255 rv = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, 256 ACPI_ADR_SPACE_SYSTEM_IO, ACPI_DEFAULT_HANDLER, NULL, NULL); 257 if (rv != AE_OK) { 258 printf("%s: unable to install SYSTEM IO handler: %d\n", 259 sc->sc_dev.dv_xname, rv); 260 return; 261 } 262 263 rv = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, 264 ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL); 265 if (rv != AE_OK) { 266 printf("%s: unable to install PCI CONFIG handler: %d\n", 267 sc->sc_dev.dv_xname, rv); 268 return; 269 } 270 271 /* 272 * Bring ACPI on-line. 273 * 274 * Note that we request that _STA (device init) and _INI (object init) 275 * methods not be run. 276 * 277 * XXX We need to arrange for the object init pass after we have 278 * XXX attached all of our children. 279 */ 280#ifdef ENABLE_DEBUGGER 281 if (acpi_dbgr & ACPI_DBGR_ENABLE) 282 acpi_osd_debugger(); 283#endif 284 rv = AcpiEnableSubsystem(ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT); 285 if (rv != AE_OK) { 286 printf("%s: unable to enable ACPI: %d\n", 287 sc->sc_dev.dv_xname, rv); 288 return; 289 } 290 acpi_active = 1; 291 292 /* 293 * Set up the default sleep state to enter when various 294 * switches are activated. 295 */ 296 sc->sc_switch_sleep[ACPI_SWITCH_POWERBUTTON] = ACPI_STATE_S5; 297 sc->sc_switch_sleep[ACPI_SWITCH_SLEEPBUTTON] = ACPI_STATE_S1; 298 sc->sc_switch_sleep[ACPI_SWITCH_LID] = ACPI_STATE_S1; 299 300 /* Our current state is "awake". */ 301 sc->sc_sleepstate = ACPI_STATE_S0; 302 303 /* Show SCI interrupt. */ 304 if (AcpiGbl_FADT != NULL) 305 printf("%s: SCI interrupting at int %d\n", 306 sc->sc_dev.dv_xname, AcpiGbl_FADT->SciInt); 307 /* 308 * Check for fixed-hardware features. 309 */ 310 acpi_enable_fixed_events(sc); 311 312 /* 313 * Fix up PCI devices. 314 */ 315#if ACPI_PCI_FIXUP 316 acpi_pci_fixup(sc); 317#endif 318 319 /* 320 * Scan the namespace and build our device tree. 321 */ 322#ifdef ENABLE_DEBUGGER 323 if (acpi_dbgr & ACPI_DBGR_PROBE) 324 acpi_osd_debugger(); 325#endif 326 acpi_md_callback((struct device *)sc); 327 acpi_build_tree(sc); 328 329 /* 330 * Register a shutdown hook that disables certain ACPI 331 * events that might happen and confuse us while we're 332 * trying to shut down. 333 */ 334 sc->sc_sdhook = shutdownhook_establish(acpi_shutdown, sc); 335 if (sc->sc_sdhook == NULL) 336 printf("%s: WARNING: unable to register shutdown hook\n", 337 sc->sc_dev.dv_xname); 338 339#ifdef ENABLE_DEBUGGER 340 if (acpi_dbgr & ACPI_DBGR_RUNNING) 341 acpi_osd_debugger(); 342#endif 343} 344 345/* 346 * acpi_shutdown: 347 * 348 * Shutdown hook for ACPI -- disable some events that 349 * might confuse us. 350 */ 351void 352acpi_shutdown(void *arg) 353{ 354 struct acpi_softc *sc = arg; 355 356 if (acpi_disable(sc) != AE_OK) 357 printf("%s: WARNING: unable to disable ACPI\n", 358 sc->sc_dev.dv_xname); 359} 360 361/* 362 * acpi_disable: 363 * 364 * Disable ACPI. 365 */ 366ACPI_STATUS 367acpi_disable(struct acpi_softc *sc) 368{ 369 ACPI_STATUS rv = AE_OK; 370 371 if (acpi_active) { 372 rv = AcpiDisable(); 373 if (rv == AE_OK) 374 acpi_active = 0; 375 } 376 return (rv); 377} 378 379struct acpi_make_devnode_state { 380 struct acpi_softc *softc; 381 struct acpi_scope *scope; 382}; 383 384/* 385 * acpi_build_tree: 386 * 387 * Scan relevant portions of the ACPI namespace and attach 388 * child devices. 389 */ 390void 391acpi_build_tree(struct acpi_softc *sc) 392{ 393 static const char *scopes[] = { 394 "\\_PR_", /* ACPI 1.0 processor namespace */ 395 "\\_SB_", /* system bus namespace */ 396 "\\_SI_", /* system idicator namespace */ 397 "\\_TZ_", /* ACPI 1.0 thermal zone namespace */ 398 NULL, 399 }; 400 struct acpi_attach_args aa; 401 struct acpi_make_devnode_state state; 402 struct acpi_scope *as; 403 struct acpi_devnode *ad; 404 ACPI_HANDLE parent; 405 int i; 406 407 TAILQ_INIT(&sc->sc_scopes); 408 409 state.softc = sc; 410 411 /* 412 * Scan the namespace and build our tree. 413 */ 414 for (i = 0; scopes[i] != NULL; i++) { 415 as = malloc(sizeof(*as), M_DEVBUF, M_WAITOK); 416 as->as_name = scopes[i]; 417 TAILQ_INIT(&as->as_devnodes); 418 419 TAILQ_INSERT_TAIL(&sc->sc_scopes, as, as_list); 420 421 state.scope = as; 422 423 if (AcpiGetHandle(ACPI_ROOT_OBJECT, (char *) scopes[i], 424 &parent) == AE_OK) { 425 AcpiWalkNamespace(ACPI_TYPE_ANY, parent, 100, 426 acpi_make_devnode, &state, NULL); 427 } 428 429 /* Now, for this namespace, try and attach the devices. */ 430 TAILQ_FOREACH(ad, &as->as_devnodes, ad_list) { 431 aa.aa_node = ad; 432 aa.aa_iot = sc->sc_iot; 433 aa.aa_memt = sc->sc_memt; 434 aa.aa_pc = sc->sc_pc; 435 aa.aa_pciflags = sc->sc_pciflags; 436 aa.aa_ic = sc->sc_ic; 437 438 if (ad->ad_devinfo.Type == ACPI_TYPE_DEVICE) { 439 /* 440 * XXX We only attach devices which are: 441 * 442 * - present 443 * - enabled 444 * - functioning properly 445 * 446 * However, if enabled, it's decoding resources, 447 * so we should claim them, if possible. 448 * Requires changes to bus_space(9). 449 */ 450 if ((ad->ad_devinfo.CurrentStatus & 451 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED| 452 ACPI_STA_DEV_OK)) != 453 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED| 454 ACPI_STA_DEV_OK)) 455 continue; 456 457 /* 458 * XXX Same problem as above... 459 */ 460 if ((ad->ad_devinfo.Valid & ACPI_VALID_HID) 461 == 0) 462 continue; 463 } 464 465 ad->ad_device = config_found(&sc->sc_dev, 466 &aa, acpi_print); 467 } 468 } 469} 470 471#if ACPI_ACTIVATE_DEV 472static void 473acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO *di) 474{ 475 ACPI_STATUS rv; 476 477#ifdef ACPI_DEBUG 478 printf("acpi_activate_device: %s, old status=%x\n", 479 di->HardwareId, di->CurrentStatus); 480#endif 481 482 rv = acpi_allocate_resources(handle); 483 if (ACPI_FAILURE(rv)) { 484 printf("acpi: activate failed for %s\n", di->HardwareId); 485 } else { 486 printf("acpi: activated %s\n", di->HardwareId); 487 } 488 489 (void)AcpiGetObjectInfo(handle, di); 490#ifdef ACPI_DEBUG 491 printf("acpi_activate_device: %s, new status=%x\n", 492 di->HardwareId, di->CurrentStatus); 493#endif 494} 495#endif /* ACPI_ACTIVATE_DEV */ 496 497/* 498 * acpi_make_devnode: 499 * 500 * Make an ACPI devnode. 501 */ 502ACPI_STATUS 503acpi_make_devnode(ACPI_HANDLE handle, UINT32 level, void *context, 504 void **status) 505{ 506 struct acpi_make_devnode_state *state = context; 507#if defined(ACPI_DEBUG) || defined(ACPI_EXTRA_DEBUG) 508 struct acpi_softc *sc = state->softc; 509#endif 510 struct acpi_scope *as = state->scope; 511 struct acpi_devnode *ad; 512 ACPI_DEVICE_INFO devinfo; 513 ACPI_OBJECT_TYPE type; 514 ACPI_STATUS rv; 515 516 if (AcpiGetType(handle, &type) == AE_OK) { 517 rv = AcpiGetObjectInfo(handle, &devinfo); 518 if (rv != AE_OK) { 519#ifdef ACPI_DEBUG 520 printf("%s: AcpiGetObjectInfo failed\n", 521 sc->sc_dev.dv_xname); 522#endif 523 goto out; /* XXX why return OK */ 524 } 525 526 switch (type) { 527 case ACPI_TYPE_DEVICE: 528#if ACPI_ACTIVATE_DEV 529 if ((devinfo.Valid & ACPI_VALID_STA) && 530 (devinfo.CurrentStatus & 531 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED)) == 532 ACPI_STA_DEV_PRESENT) 533 acpi_activate_device(handle, &devinfo); 534 /* FALLTHROUGH */ 535#endif 536 537 case ACPI_TYPE_PROCESSOR: 538 case ACPI_TYPE_THERMAL: 539 case ACPI_TYPE_POWER: 540 ad = malloc(sizeof(*ad), M_DEVBUF, M_NOWAIT|M_ZERO); 541 if (ad == NULL) 542 return (AE_NO_MEMORY); 543 544 ad->ad_handle = handle; 545 ad->ad_level = level; 546 ad->ad_scope = as; 547 ad->ad_type = type; 548 549 TAILQ_INSERT_TAIL(&as->as_devnodes, ad, ad_list); 550 551 rv = AcpiGetObjectInfo(handle, &ad->ad_devinfo); 552 if (rv != AE_OK) 553 goto out; 554 555 if ((ad->ad_devinfo.Valid & ACPI_VALID_HID) == 0) 556 goto out; 557 558#ifdef ACPI_EXTRA_DEBUG 559 printf("%s: HID %s found in scope %s level %d\n", 560 sc->sc_dev.dv_xname, ad->ad_devinfo.HardwareId, 561 as->as_name, ad->ad_level); 562 if (ad->ad_devinfo.Valid & ACPI_VALID_UID) 563 printf(" UID %s\n", 564 ad->ad_devinfo.UniqueId); 565 if (ad->ad_devinfo.Valid & ACPI_VALID_ADR) 566 printf(" ADR 0x%016qx\n", 567 ad->ad_devinfo.Address); 568 if (ad->ad_devinfo.Valid & ACPI_VALID_STA) 569 printf(" STA 0x%08x\n", 570 ad->ad_devinfo.CurrentStatus); 571#endif 572 } 573 } 574 out: 575 return (AE_OK); 576} 577 578/* 579 * acpi_print: 580 * 581 * Autoconfiguration print routine. 582 */ 583int 584acpi_print(void *aux, const char *pnp) 585{ 586 struct acpi_attach_args *aa = aux; 587 588 if (pnp) { 589 if (aa->aa_node->ad_devinfo.Valid & ACPI_VALID_HID) { 590 char *pnpstr = aa->aa_node->ad_devinfo.HardwareId; 591 char *str; 592 593 aprint_normal("%s ", pnpstr); 594 if (acpi_eval_string(aa->aa_node->ad_handle, 595 "_STR", &str) == AE_OK) { 596 aprint_normal("[%s] ", str); 597 AcpiOsFree(str); 598 } 599#ifdef ACPIVERBOSE 600 else { 601 int i; 602 603 for (i = 0; i < sizeof(acpi_knowndevs) / 604 sizeof(acpi_knowndevs[0]); i++) { 605 if (strcmp(acpi_knowndevs[i].pnp, 606 pnpstr) == 0) { 607 printf("[%s] ", 608 acpi_knowndevs[i].str); 609 } 610 } 611 } 612 613#endif 614 } else { 615 aprint_normal("ACPI Object Type '%s' (0x%02x) ", 616 AcpiUtGetTypeName(aa->aa_node->ad_devinfo.Type), 617 aa->aa_node->ad_devinfo.Type); 618 } 619 aprint_normal("at %s", pnp); 620 } else { 621 aprint_normal(" (%s", aa->aa_node->ad_devinfo.HardwareId); 622 if (aa->aa_node->ad_devinfo.Valid & ACPI_VALID_UID) { 623 char *uid; 624 625 if (aa->aa_node->ad_devinfo.UniqueId[0] == '\0') 626 uid = "<null>"; 627 else 628 uid = aa->aa_node->ad_devinfo.UniqueId; 629 aprint_normal("-%s", uid); 630 } 631 aprint_normal(")"); 632 } 633 634 return (UNCONF); 635} 636 637/***************************************************************************** 638 * ACPI fixed-hardware feature handlers 639 *****************************************************************************/ 640 641UINT32 acpi_fixed_power_button_handler(void *); 642UINT32 acpi_fixed_sleep_button_handler(void *); 643 644/* 645 * acpi_enable_fixed_events: 646 * 647 * Enable any fixed-hardware feature handlers. 648 */ 649void 650acpi_enable_fixed_events(struct acpi_softc *sc) 651{ 652 static int beenhere; 653 ACPI_STATUS rv; 654 655 /* 656 * Check for fixed-hardware buttons. 657 */ 658 659 if (AcpiGbl_FADT != NULL && AcpiGbl_FADT->PwrButton == 0) { 660 if (beenhere == 0) 661 printf("%s: fixed-feature power button present\n", 662 sc->sc_dev.dv_xname); 663 rv = AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON, 664 acpi_fixed_power_button_handler, sc); 665 if (rv != AE_OK) 666 printf("%s: unable to install handler for fixed " 667 "power button: %d\n", sc->sc_dev.dv_xname, rv); 668 } 669 670 if (AcpiGbl_FADT != NULL && AcpiGbl_FADT->SleepButton == 0) { 671 if (beenhere == 0) 672 printf("%s: fixed-feature sleep button present\n", 673 sc->sc_dev.dv_xname); 674 rv = AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON, 675 acpi_fixed_sleep_button_handler, sc); 676 if (rv != AE_OK) 677 printf("%s: unable to install handler for fixed " 678 "power button: %d\n", sc->sc_dev.dv_xname, rv); 679 } 680 681 beenhere = 1; 682} 683 684/* 685 * acpi_fixed_power_button_handler: 686 * 687 * Fixed event handler for the power button. 688 */ 689UINT32 690acpi_fixed_power_button_handler(void *context) 691{ 692 struct acpi_softc *sc = context; 693 694 /* XXX XXX XXX */ 695 696 printf("%s: fixed power button pressed\n", sc->sc_dev.dv_xname); 697 698 return (ACPI_INTERRUPT_HANDLED); 699} 700 701/* 702 * acpi_fixed_sleep_button_handler: 703 * 704 * Fixed event handler for the sleep button. 705 */ 706UINT32 707acpi_fixed_sleep_button_handler(void *context) 708{ 709 struct acpi_softc *sc = context; 710 711 /* XXX XXX XXX */ 712 713 printf("%s: fixed sleep button pressed\n", sc->sc_dev.dv_xname); 714 715 return (ACPI_INTERRUPT_HANDLED); 716} 717 718/***************************************************************************** 719 * ACPI utility routines. 720 *****************************************************************************/ 721 722/* 723 * acpi_eval_integer: 724 * 725 * Evaluate an integer object. 726 */ 727ACPI_STATUS 728acpi_eval_integer(ACPI_HANDLE handle, char *path, int *valp) 729{ 730 ACPI_STATUS rv; 731 ACPI_BUFFER buf; 732 ACPI_OBJECT param; 733 734 if (handle == NULL) 735 handle = ACPI_ROOT_OBJECT; 736 737 buf.Pointer = ¶m; 738 buf.Length = sizeof(param); 739 740 rv = AcpiEvaluateObject(handle, path, NULL, &buf); 741 if (rv == AE_OK) { 742 if (param.Type == ACPI_TYPE_INTEGER) 743 *valp = param.Integer.Value; 744 else 745 rv = AE_TYPE; 746 } 747 748 return (rv); 749} 750 751/* 752 * acpi_eval_string: 753 * 754 * Evaluate a (Unicode) string object. 755 */ 756ACPI_STATUS 757acpi_eval_string(ACPI_HANDLE handle, char *path, char **stringp) 758{ 759 ACPI_STATUS rv; 760 ACPI_BUFFER buf; 761 ACPI_OBJECT *param; 762 763 if (handle == NULL) 764 handle = ACPI_ROOT_OBJECT; 765 766 buf.Pointer = NULL; 767 buf.Length = ACPI_ALLOCATE_BUFFER; 768 769 rv = AcpiEvaluateObject(handle, path, NULL, &buf); 770 param = (ACPI_OBJECT *)buf.Pointer; 771 if (rv == AE_OK && param) { 772 if (param->Type == ACPI_TYPE_STRING) { 773 char *ptr = param->String.Pointer; 774 size_t len; 775 while (*ptr++) 776 continue; 777 len = ptr - param->String.Pointer; 778 if ((*stringp = AcpiOsAllocate(len)) == NULL) { 779 rv = AE_NO_MEMORY; 780 goto done; 781 } 782 (void)memcpy(*stringp, param->String.Pointer, len); 783 goto done; 784 } 785 rv = AE_TYPE; 786 } 787done: 788 if (buf.Pointer) 789 AcpiOsFree(buf.Pointer); 790 return (rv); 791} 792 793 794/* 795 * acpi_eval_struct: 796 * 797 * Evaluate a more complex structure. Caller must free buf.Pointer. 798 */ 799ACPI_STATUS 800acpi_eval_struct(ACPI_HANDLE handle, char *path, ACPI_BUFFER *bufp) 801{ 802 ACPI_STATUS rv; 803 804 if (handle == NULL) 805 handle = ACPI_ROOT_OBJECT; 806 807 bufp->Pointer = NULL; 808 bufp->Length = ACPI_ALLOCATE_BUFFER; 809 810 rv = AcpiEvaluateObject(handle, path, NULL, bufp); 811 812 return (rv); 813} 814 815/* 816 * acpi_get: 817 * 818 * Fetch data info the specified (empty) ACPI buffer. 819 */ 820ACPI_STATUS 821acpi_get(ACPI_HANDLE handle, ACPI_BUFFER *buf, 822 ACPI_STATUS (*getit)(ACPI_HANDLE, ACPI_BUFFER *)) 823{ 824 ACPI_STATUS rv; 825 826 buf->Pointer = NULL; 827 buf->Length = 0; 828 829 rv = (*getit)(handle, buf); 830 if (rv != AE_BUFFER_OVERFLOW) 831 return (rv); 832 833 buf->Pointer = AcpiOsAllocate(buf->Length); 834 if (buf->Pointer == NULL) 835 return (AE_NO_MEMORY); 836 memset(buf->Pointer, 0, buf->Length); 837 838 return ((*getit)(handle, buf)); 839} 840 841 842/* 843 * acpi_acquire_global_lock: 844 * 845 * Acquire global lock, with sleeping appropriately. 846 */ 847#define ACQUIRE_WAIT 1000 848 849ACPI_STATUS 850acpi_acquire_global_lock(UINT32 *handle) 851{ 852 ACPI_STATUS status; 853 UINT32 h; 854 int s; 855 856 s = splhigh(); 857 simple_lock(&acpi_slock); 858 while (acpi_locked) 859 ltsleep(&acpi_slock, PVM, "acpi_lock", 0, &acpi_slock); 860 acpi_locked = 1; 861 simple_unlock(&acpi_slock); 862 splx(s); 863 status = AcpiAcquireGlobalLock(ACQUIRE_WAIT, &h); 864 if (ACPI_SUCCESS(status)) 865 *handle = h; 866 else { 867 printf("acpi: cannot acquire lock. status=0x%X\n", status); 868 s = splhigh(); 869 simple_lock(&acpi_slock); 870 acpi_locked = 0; 871 simple_unlock(&acpi_slock); 872 splx(s); 873 } 874 875 return (status); 876} 877 878void 879acpi_release_global_lock(UINT32 handle) 880{ 881 ACPI_STATUS status; 882 int s; 883 884 if (!acpi_locked) { 885 printf("acpi: not locked.\n"); 886 return; 887 } 888 889 status = AcpiReleaseGlobalLock(handle); 890 if (ACPI_FAILURE(status)) { 891 printf("acpi: AcpiReleaseGlobalLock failed. status=0x%X\n", 892 status); 893 return; 894 } 895 896 s = splhigh(); 897 simple_lock(&acpi_slock); 898 acpi_locked = 0; 899 simple_unlock(&acpi_slock); 900 splx(s); 901 wakeup(&acpi_slock); 902} 903 904int 905acpi_is_global_locked(void) 906{ 907 return (acpi_locked); 908} 909 910 911 912/***************************************************************************** 913 * ACPI sleep support. 914 *****************************************************************************/ 915 916static int 917is_available_state(struct acpi_softc *sc, int state) 918{ 919 UINT8 type_a, type_b; 920 921 return (ACPI_SUCCESS(AcpiGetSleepTypeData((UINT8)state, 922 &type_a, &type_b))); 923} 924 925/* 926 * acpi_enter_sleep_state: 927 * 928 * enter to the specified sleep state. 929 */ 930 931ACPI_STATUS 932acpi_enter_sleep_state(struct acpi_softc *sc, int state) 933{ 934 int s; 935 ACPI_STATUS ret = AE_OK; 936 937 switch (state) { 938 case ACPI_STATE_S0: 939 break; 940 case ACPI_STATE_S1: 941 case ACPI_STATE_S2: 942 case ACPI_STATE_S3: 943 case ACPI_STATE_S4: 944 if (!is_available_state(sc, state)) { 945 printf("acpi: cannot enter the sleep state (%d).\n", 946 state); 947 break; 948 } 949 ret = AcpiEnterSleepStatePrep(state); 950 if (ACPI_FAILURE(ret)) { 951 printf("acpi: failed preparing to sleep (%s)\n", 952 AcpiFormatException(ret)); 953 break; 954 } 955 if (state==ACPI_STATE_S1) { 956 /* just enter the state */ 957 acpi_md_OsDisableInterrupt(); 958 AcpiEnterSleepState((UINT8)state); 959 AcpiUtReleaseMutex(ACPI_MTX_HARDWARE); 960 } else { 961 /* XXX: powerhooks(9) framework is too poor to 962 * support ACPI sleep state... 963 */ 964 dopowerhooks(PWR_SOFTSUSPEND); 965 s = splhigh(); 966 dopowerhooks(PWR_SUSPEND); 967 acpi_md_sleep(state); 968 dopowerhooks(PWR_RESUME); 969 splx(s); 970 dopowerhooks(PWR_SOFTRESUME); 971 if (state==ACPI_STATE_S4) 972 AcpiEnable(); 973 } 974 AcpiLeaveSleepState((UINT8)state); 975 break; 976 case ACPI_STATE_S5: 977 AcpiEnterSleepStatePrep(ACPI_STATE_S5); 978 acpi_md_OsDisableInterrupt(); 979 AcpiEnterSleepState(ACPI_STATE_S5); 980 printf("WARNING: powerdown failed!\n"); 981 break; 982 } 983 984 return (ret); 985} 986 987#if ACPI_PCI_FIXUP 988ACPI_STATUS acpi_pci_fixup_bus(ACPI_HANDLE, UINT32, void *, void **); 989/* 990 * acpi_pci_fixup: 991 * 992 * Set up PCI devices that BIOS didn't handle right. 993 * Iterate through all devices and try to get the _PTR 994 * (PCI Routing Table). If it exists then make sure all 995 * interrupt links that it uses are working. 996 */ 997void 998acpi_pci_fixup(struct acpi_softc *sc) 999{ 1000 ACPI_HANDLE parent; 1001 1002#ifdef ACPI_DEBUG 1003 printf("acpi_pci_fixup starts:\n"); 1004#endif 1005 if (AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &parent) != AE_OK) 1006 return; 1007 sc->sc_pci_bus = 0; 1008 AcpiWalkNamespace(ACPI_TYPE_DEVICE, parent, 100, 1009 acpi_pci_fixup_bus, sc, NULL); 1010} 1011 1012static ACPI_HANDLE 1013acpi_get_node(char *name) 1014{ 1015 ACPI_NAMESPACE_NODE *ObjDesc; 1016 ACPI_STATUS Status; 1017 1018 Status = AcpiNsGetNodeByPath(name, NULL, 0, &ObjDesc); 1019 if (ACPI_FAILURE (Status)) { 1020 printf("acpi_get_node: could not find: %s\n", 1021 AcpiFormatException (Status)); 1022 return NULL; 1023 } 1024 return ObjDesc; 1025} 1026 1027static uint 1028acpi_get_intr(ACPI_HANDLE handle) 1029{ 1030 ACPI_BUFFER ret; 1031 ACPI_STATUS rv; 1032 ACPI_RESOURCE *res; 1033 ACPI_RESOURCE_IRQ *irq; 1034 uint intr; 1035 1036 intr = -1; 1037 rv = acpi_get(handle, &ret, AcpiGetCurrentResources); 1038 if (ACPI_FAILURE(rv)) 1039 return (intr); 1040 for (res = ret.Pointer; res->Id != ACPI_RSTYPE_END_TAG; 1041 res = ACPI_NEXT_RESOURCE(res)) { 1042 if (res->Id == ACPI_RSTYPE_IRQ) { 1043 irq = (ACPI_RESOURCE_IRQ *)&res->Data; 1044 if (irq->NumberOfInterrupts == 1) 1045 intr = irq->Interrupts[0]; 1046 break; 1047 } 1048 } 1049 free(ret.Pointer, M_DEVBUF); 1050 return (intr); 1051} 1052 1053static void 1054acpi_pci_set_line(int bus, int dev, int pin, int line) 1055{ 1056 ACPI_STATUS err; 1057 ACPI_PCI_ID pid; 1058 UINT32 intr, id, bhlc; 1059 int func, nfunc; 1060 1061 pid.Bus = bus; 1062 pid.Device = dev; 1063 pid.Function = 0; 1064 1065 err = AcpiOsReadPciConfiguration(&pid, PCI_BHLC_REG, &bhlc, 32); 1066 if (err) 1067 return; 1068 if (PCI_HDRTYPE_MULTIFN(bhlc)) 1069 nfunc = 8; 1070 else 1071 nfunc = 1; 1072 1073 for (func = 0; func < nfunc; func++) { 1074 pid.Function = func; 1075 1076 err = AcpiOsReadPciConfiguration(&pid, PCI_ID_REG, &id, 32); 1077 if (err || PCI_VENDOR(id) == PCI_VENDOR_INVALID || 1078 PCI_VENDOR(id) == 0) 1079 continue; 1080 1081 err = AcpiOsReadPciConfiguration(&pid, PCI_INTERRUPT_REG, 1082 &intr, 32); 1083 if (err) { 1084 printf("AcpiOsReadPciConfiguration failed %d\n", err); 1085 return; 1086 } 1087 if (pin == PCI_INTERRUPT_PIN(intr) && 1088 line != PCI_INTERRUPT_LINE(intr)) { 1089#ifdef ACPI_DEBUG 1090 printf("acpi fixup pci intr: %d:%d:%d %c: %d -> %d\n", 1091 bus, dev, func, 1092 pin + '@', PCI_INTERRUPT_LINE(intr), 1093 line); 1094#endif 1095 intr &= ~(PCI_INTERRUPT_LINE_MASK << 1096 PCI_INTERRUPT_LINE_SHIFT); 1097 intr |= line << PCI_INTERRUPT_LINE_SHIFT; 1098 err = AcpiOsWritePciConfiguration(&pid, 1099 PCI_INTERRUPT_REG, intr, 32); 1100 if (err) { 1101 printf("AcpiOsWritePciConfiguration failed" 1102 " %d\n", err); 1103 return; 1104 } 1105 } 1106 } 1107} 1108 1109ACPI_STATUS 1110acpi_pci_fixup_bus(ACPI_HANDLE handle, UINT32 level, void *context, 1111 void **status) 1112{ 1113 struct acpi_softc *sc = context; 1114 ACPI_STATUS rv; 1115 ACPI_BUFFER buf; 1116 UINT8 *Buffer; 1117 ACPI_PCI_ROUTING_TABLE *PrtElement; 1118 ACPI_HANDLE link; 1119 uint line; 1120 ACPI_NAMESPACE_NODE *node; 1121 ACPI_INTEGER val; 1122 1123 rv = acpi_get(handle, &buf, AcpiGetIrqRoutingTable); 1124 if (ACPI_FAILURE(rv)) 1125 return (AE_OK); 1126 1127 /* 1128 * If at level 1, this is a PCI root bus. Try the _BBN method 1129 * to get the right PCI bus numbering for the following 1130 * busses (this is a depth-first walk). It may fail, 1131 * for example if there's only one root bus, but that 1132 * case should be ok, so we'll ignore that. 1133 */ 1134 if (level == 1) { 1135 node = AcpiNsMapHandleToNode(handle); 1136 rv = AcpiUtEvaluateNumericObject(METHOD_NAME__BBN, node, &val); 1137 if (!ACPI_FAILURE(rv)) { 1138#ifdef ACPI_DEBUG 1139 printf("%s: fixup: _BBN success, bus # was %d now %d\n", 1140 sc->sc_dev.dv_xname, sc->sc_pci_bus, 1141 ACPI_LOWORD(val)); 1142#endif 1143 sc->sc_pci_bus = ACPI_LOWORD(val); 1144 } 1145 } 1146 1147 1148#ifdef ACPI_DEBUG 1149 printf("%s: fixing up PCI bus %d at level %u\n", sc->sc_dev.dv_xname, 1150 sc->sc_pci_bus, level); 1151#endif 1152 1153 for (Buffer = buf.Pointer; ; Buffer += PrtElement->Length) { 1154 PrtElement = (ACPI_PCI_ROUTING_TABLE *)Buffer; 1155 if (PrtElement->Length == 0) 1156 break; 1157 if (PrtElement->Source[0] == 0) 1158 continue; 1159 1160 link = acpi_get_node(PrtElement->Source); 1161 if (link == NULL) 1162 continue; 1163 line = acpi_get_intr(link); 1164 if (line == -1) { 1165#ifdef ACPI_DEBUG 1166 printf("%s: fixing up intr link %s\n", 1167 sc->sc_dev.dv_xname, PrtElement->Source); 1168#endif 1169 rv = acpi_allocate_resources(link); 1170 if (ACPI_FAILURE(rv)) { 1171 printf("%s: interrupt allocation failed %s\n", 1172 sc->sc_dev.dv_xname, PrtElement->Source); 1173 continue; 1174 } 1175 line = acpi_get_intr(link); 1176 if (line == -1) { 1177 printf("%s: get intr failed %s\n", 1178 sc->sc_dev.dv_xname, PrtElement->Source); 1179 continue; 1180 } 1181 } 1182 1183 acpi_pci_set_line(sc->sc_pci_bus, PrtElement->Address >> 16, 1184 PrtElement->Pin + 1, line); 1185 } 1186 1187 sc->sc_pci_bus++; 1188 1189 free(buf.Pointer, M_DEVBUF); 1190 return (AE_OK); 1191} 1192#endif /* ACPI_PCI_FIXUP */ 1193 1194#if ACPI_PCI_FIXUP || ACPI_ACTIVATE_DEV 1195/* XXX This very incomplete */ 1196ACPI_STATUS 1197acpi_allocate_resources(ACPI_HANDLE handle) 1198{ 1199 ACPI_BUFFER bufp, bufc, bufn; 1200 ACPI_RESOURCE *resp, *resc, *resn; 1201 ACPI_RESOURCE_IRQ *irq; 1202 ACPI_STATUS rv; 1203 uint delta; 1204 1205 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 1206 if (ACPI_FAILURE(rv)) 1207 goto out; 1208 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 1209 if (ACPI_FAILURE(rv)) { 1210 goto out1; 1211 } 1212 1213 bufn.Length = 1000; 1214 bufn.Pointer = resn = malloc(bufn.Length, M_DEVBUF, M_WAITOK); 1215 resp = bufp.Pointer; 1216 resc = bufc.Pointer; 1217 while (resc->Id != ACPI_RSTYPE_END_TAG && 1218 resp->Id != ACPI_RSTYPE_END_TAG) { 1219 while (resc->Id != resp->Id && resp->Id != ACPI_RSTYPE_END_TAG) 1220 resp = ACPI_NEXT_RESOURCE(resp); 1221 if (resp->Id == ACPI_RSTYPE_END_TAG) 1222 break; 1223 /* Found identical Id */ 1224 resn->Id = resc->Id; 1225 switch (resc->Id) { 1226 case ACPI_RSTYPE_IRQ: 1227 memcpy(&resn->Data, &resp->Data, 1228 sizeof(ACPI_RESOURCE_IRQ)); 1229 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 1230 irq->Interrupts[0] = 1231 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 1232 Interrupts[irq->NumberOfInterrupts-1]; 1233 irq->NumberOfInterrupts = 1; 1234 resn->Length = ACPI_SIZEOF_RESOURCE(ACPI_RESOURCE_IRQ); 1235 break; 1236 case ACPI_RSTYPE_IO: 1237 memcpy(&resn->Data, &resp->Data, 1238 sizeof(ACPI_RESOURCE_IO)); 1239 resn->Length = resp->Length; 1240 break; 1241 default: 1242 printf("acpi_allocate_resources: res=%d\n", resc->Id); 1243 rv = AE_BAD_DATA; 1244 goto out2; 1245 } 1246 resc = ACPI_NEXT_RESOURCE(resc); 1247 resn = ACPI_NEXT_RESOURCE(resn); 1248 delta = (UINT8 *)resn - (UINT8 *)bufn.Pointer; 1249 if (delta >= 1250 bufn.Length-ACPI_SIZEOF_RESOURCE(ACPI_RESOURCE_DATA)) { 1251 bufn.Length *= 2; 1252 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 1253 M_DEVBUF, M_WAITOK); 1254 resn = (ACPI_RESOURCE *)((UINT8 *)bufn.Pointer + delta); 1255 } 1256 } 1257 if (resc->Id != ACPI_RSTYPE_END_TAG) { 1258 printf("acpi_allocate_resources: resc not exhausted\n"); 1259 rv = AE_BAD_DATA; 1260 goto out3; 1261 } 1262 1263 resn->Id = ACPI_RSTYPE_END_TAG; 1264 rv = AcpiSetCurrentResources(handle, &bufn); 1265 if (ACPI_FAILURE(rv)) { 1266 printf("acpi_allocate_resources: AcpiSetCurrentResources %s\n", 1267 AcpiFormatException(rv)); 1268 } 1269 1270out3: 1271 free(bufn.Pointer, M_DEVBUF); 1272out2: 1273 free(bufc.Pointer, M_DEVBUF); 1274out1: 1275 free(bufp.Pointer, M_DEVBUF); 1276out: 1277 return rv; 1278} 1279#endif /* ACPI_PCI_FIXUP || ACPI_ACTIVATE_DEV */ 1280