acpi.c revision 1.101
1 /* $NetBSD: acpi.c,v 1.101 2007/02/19 22:31:05 ad 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 * 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 1.101 2007/02/19 22:31:05 ad 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/mutex.h> 90 #include <sys/kernel.h> 91 #include <sys/proc.h> 92 #include <sys/sysctl.h> 93 94 #include <dev/acpi/acpica.h> 95 #include <dev/acpi/acpireg.h> 96 #include <dev/acpi/acpivar.h> 97 #include <dev/acpi/acpi_osd.h> 98 #include <dev/acpi/acpi_timer.h> 99 #ifdef ACPIVERBOSE 100 #include <dev/acpi/acpidevs_data.h> 101 #endif 102 103 #if defined(ACPI_PCI_FIXUP) 104 #error The option ACPI_PCI_FIXUP has been obsoleted by PCI_INTR_FIXUP_DISABLED. Please adjust your kernel configuration file. 105 #endif 106 107 #ifdef PCI_INTR_FIXUP_DISABLED 108 #include <dev/pci/pcidevs.h> 109 #endif 110 111 MALLOC_DECLARE(M_ACPI); 112 113 #include <machine/acpi_machdep.h> 114 115 #ifdef ACPI_DEBUGGER 116 #define ACPI_DBGR_INIT 0x01 117 #define ACPI_DBGR_TABLES 0x02 118 #define ACPI_DBGR_ENABLE 0x04 119 #define ACPI_DBGR_PROBE 0x08 120 #define ACPI_DBGR_RUNNING 0x10 121 122 static int acpi_dbgr = 0x00; 123 #endif 124 125 static int acpi_match(struct device *, struct cfdata *, void *); 126 static void acpi_attach(struct device *, struct device *, void *); 127 128 static int acpi_print(void *aux, const char *); 129 130 static int sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS); 131 132 extern struct cfdriver acpi_cd; 133 134 CFATTACH_DECL(acpi, sizeof(struct acpi_softc), 135 acpi_match, acpi_attach, NULL, NULL); 136 137 /* 138 * This is a flag we set when the ACPI subsystem is active. Machine 139 * dependent code may wish to skip other steps (such as attaching 140 * subsystems that ACPI supercedes) when ACPI is active. 141 */ 142 int acpi_active; 143 int acpi_force_load; 144 145 /* 146 * Pointer to the ACPI subsystem's state. There can be only 147 * one ACPI instance. 148 */ 149 struct acpi_softc *acpi_softc; 150 151 /* 152 * Locking stuff. 153 */ 154 static kmutex_t acpi_slock; 155 static int acpi_locked; 156 extern kmutex_t acpi_interrupt_list_mtx; 157 158 /* 159 * sysctl-related information 160 */ 161 162 static int acpi_node = CTL_EOL; 163 static uint64_t acpi_root_pointer; /* found as hw.acpi.root */ 164 static int acpi_sleepstate = ACPI_STATE_S0; 165 166 /* 167 * Prototypes. 168 */ 169 static void acpi_shutdown(void *); 170 static void acpi_build_tree(struct acpi_softc *); 171 static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, UINT32, void *, void **); 172 173 static void acpi_enable_fixed_events(struct acpi_softc *); 174 175 /* 176 * acpi_probe: 177 * 178 * Probe for ACPI support. This is called by the 179 * machine-dependent ACPI front-end. All of the 180 * actual work is done by ACPICA. 181 * 182 * NOTE: This is not an autoconfiguration interface function. 183 */ 184 int 185 acpi_probe(void) 186 { 187 static int beenhere; 188 ACPI_STATUS rv; 189 190 if (beenhere != 0) 191 panic("acpi_probe: ACPI has already been probed"); 192 beenhere = 1; 193 194 mutex_init(&acpi_slock, MUTEX_DRIVER, IPL_NONE); 195 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DRIVER, IPL_NONE); 196 acpi_locked = 0; 197 198 /* 199 * Start up ACPICA. 200 */ 201 #ifdef ACPI_DEBUGGER 202 if (acpi_dbgr & ACPI_DBGR_INIT) 203 acpi_osd_debugger(); 204 #endif 205 206 rv = AcpiInitializeSubsystem(); 207 if (ACPI_FAILURE(rv)) { 208 printf("ACPI: unable to initialize ACPICA: %s\n", 209 AcpiFormatException(rv)); 210 return 0; 211 } 212 213 #ifdef ACPI_DEBUGGER 214 if (acpi_dbgr & ACPI_DBGR_TABLES) 215 acpi_osd_debugger(); 216 #endif 217 218 rv = AcpiLoadTables(); 219 if (ACPI_FAILURE(rv)) { 220 printf("ACPI: unable to load tables: %s\n", 221 AcpiFormatException(rv)); 222 return 0; 223 } 224 225 226 if (!acpi_force_load && (acpi_find_quirks() & ACPI_QUIRK_BROKEN)) { 227 printf("ACPI: BIOS implementation in listed as broken:\n"); 228 printf("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 229 "AslId <%4.4s,%08x>\n", 230 AcpiGbl_XSDT->OemId, AcpiGbl_XSDT->OemTableId, 231 AcpiGbl_XSDT->OemRevision, 232 AcpiGbl_XSDT->AslCompilerId, 233 AcpiGbl_XSDT->AslCompilerRevision); 234 printf("ACPI: not used. set acpi_force_load to use anyway.\n"); 235 return 0; 236 } 237 238 /* 239 * Looks like we have ACPI! 240 */ 241 242 return 1; 243 } 244 245 static int 246 acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 247 { 248 struct cfattach *ca; 249 250 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 251 return (ca == &acpi_ca); 252 } 253 254 int 255 acpi_check(device_t parent, const char *ifattr) 256 { 257 return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); 258 } 259 260 ACPI_STATUS 261 acpi_OsGetRootPointer(UINT32 Flags, ACPI_POINTER *PhysicalAddress) 262 { 263 ACPI_STATUS rv; 264 265 /* 266 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 267 * 268 * IA-64: Use the EFI. 269 * 270 * We let MD code handle this since there are multiple 271 * ways to do it. 272 */ 273 274 rv = acpi_md_OsGetRootPointer(Flags, PhysicalAddress); 275 276 if (acpi_root_pointer == 0 && ACPI_SUCCESS(rv)) 277 acpi_root_pointer = 278 (uint64_t)PhysicalAddress->Pointer.Physical; 279 280 return rv; 281 } 282 283 /* 284 * acpi_match: 285 * 286 * Autoconfiguration `match' routine. 287 */ 288 static int 289 acpi_match(struct device *parent, struct cfdata *match, 290 void *aux) 291 { 292 /* 293 * XXX Check other locators? Hard to know -- machine 294 * dependent code has already checked for the presence 295 * of ACPI by calling acpi_probe(), so I suppose we 296 * don't really have to do anything else. 297 */ 298 return 1; 299 } 300 301 /* 302 * acpi_attach: 303 * 304 * Autoconfiguration `attach' routine. Finish initializing 305 * ACPICA (some initialization was done in acpi_probe(), 306 * which was required to check for the presence of ACPI), 307 * and enable the ACPI subsystem. 308 */ 309 static void 310 acpi_attach(struct device *parent, struct device *self, void *aux) 311 { 312 struct acpi_softc *sc = (void *) self; 313 struct acpibus_attach_args *aa = aux; 314 ACPI_STATUS rv; 315 316 aprint_naive(": Advanced Configuration and Power Interface\n"); 317 aprint_normal(": Advanced Configuration and Power Interface\n"); 318 319 if (acpi_softc != NULL) 320 panic("acpi_attach: ACPI has already been attached"); 321 322 sysmon_power_settype("acpi"); 323 324 aprint_verbose("%s: using Intel ACPI CA subsystem version %08x\n", 325 sc->sc_dev.dv_xname, ACPI_CA_VERSION); 326 327 aprint_verbose("%s: X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 328 sc->sc_dev.dv_xname, 329 AcpiGbl_XSDT->OemId, AcpiGbl_XSDT->OemTableId, 330 AcpiGbl_XSDT->OemRevision, 331 AcpiGbl_XSDT->AslCompilerId, AcpiGbl_XSDT->AslCompilerRevision); 332 333 sc->sc_quirks = acpi_find_quirks(); 334 335 sc->sc_iot = aa->aa_iot; 336 sc->sc_memt = aa->aa_memt; 337 sc->sc_pc = aa->aa_pc; 338 sc->sc_pciflags = aa->aa_pciflags; 339 sc->sc_ic = aa->aa_ic; 340 341 acpi_softc = sc; 342 343 /* 344 * Bring ACPI on-line. 345 */ 346 #ifdef ACPI_DEBUGGER 347 if (acpi_dbgr & ACPI_DBGR_ENABLE) 348 acpi_osd_debugger(); 349 #endif 350 351 rv = AcpiEnableSubsystem(0); 352 if (ACPI_FAILURE(rv)) { 353 aprint_error("%s: unable to enable ACPI: %s\n", 354 sc->sc_dev.dv_xname, AcpiFormatException(rv)); 355 return; 356 } 357 358 /* early EC handler initialization if ECDT table is available */ 359 #if NACPIEC > 0 360 acpiec_early_attach(&sc->sc_dev); 361 #endif 362 363 rv = AcpiInitializeObjects(0); 364 if (ACPI_FAILURE(rv)) { 365 aprint_error("%s: unable to initialize ACPI objects: %s\n", 366 sc->sc_dev.dv_xname, AcpiFormatException(rv)); 367 return; 368 } 369 acpi_active = 1; 370 371 /* Our current state is "awake". */ 372 sc->sc_sleepstate = ACPI_STATE_S0; 373 374 /* Show SCI interrupt. */ 375 if (AcpiGbl_FADT != NULL) 376 aprint_verbose("%s: SCI interrupting at int %d\n", 377 sc->sc_dev.dv_xname, AcpiGbl_FADT->SciInt); 378 /* 379 * Check for fixed-hardware features. 380 */ 381 acpi_enable_fixed_events(sc); 382 acpitimer_init(); 383 384 /* 385 * Scan the namespace and build our device tree. 386 */ 387 #ifdef ACPI_DEBUGGER 388 if (acpi_dbgr & ACPI_DBGR_PROBE) 389 acpi_osd_debugger(); 390 #endif 391 acpi_md_callback((struct device *)sc); 392 acpi_build_tree(sc); 393 394 if (acpi_root_pointer != 0 && acpi_node != CTL_EOL) { 395 (void)sysctl_createv(NULL, 0, NULL, NULL, 396 CTLFLAG_IMMEDIATE, 397 CTLTYPE_QUAD, "root", NULL, NULL, 398 acpi_root_pointer, NULL, 0, 399 CTL_HW, acpi_node, CTL_CREATE, CTL_EOL); 400 } 401 402 403 /* 404 * Register a shutdown hook that disables certain ACPI 405 * events that might happen and confuse us while we're 406 * trying to shut down. 407 */ 408 sc->sc_sdhook = shutdownhook_establish(acpi_shutdown, sc); 409 if (sc->sc_sdhook == NULL) 410 aprint_error("%s: WARNING: unable to register shutdown hook\n", 411 sc->sc_dev.dv_xname); 412 413 #ifdef ACPI_DEBUGGER 414 if (acpi_dbgr & ACPI_DBGR_RUNNING) 415 acpi_osd_debugger(); 416 #endif 417 } 418 419 /* 420 * acpi_shutdown: 421 * 422 * Shutdown hook for ACPI -- disable some events that 423 * might confuse us. 424 */ 425 static void 426 acpi_shutdown(void *arg) 427 { 428 /* nothing */ 429 } 430 431 #if 0 432 /* 433 * acpi_disable: 434 * 435 * Disable ACPI. 436 */ 437 static ACPI_STATUS 438 acpi_disable(struct acpi_softc *sc) 439 { 440 ACPI_STATUS rv = AE_OK; 441 442 if (acpi_active) { 443 rv = AcpiDisable(); 444 if (ACPI_SUCCESS(rv)) 445 acpi_active = 0; 446 } 447 return rv; 448 } 449 #endif 450 451 struct acpi_make_devnode_state { 452 struct acpi_softc *softc; 453 struct acpi_scope *scope; 454 }; 455 456 /* 457 * acpi_build_tree: 458 * 459 * Scan relevant portions of the ACPI namespace and attach 460 * child devices. 461 */ 462 static void 463 acpi_build_tree(struct acpi_softc *sc) 464 { 465 static const char *scopes[] = { 466 "\\_PR_", /* ACPI 1.0 processor namespace */ 467 "\\_SB_", /* system bus namespace */ 468 "\\_SI_", /* system indicator namespace */ 469 "\\_TZ_", /* ACPI 1.0 thermal zone namespace */ 470 NULL, 471 }; 472 struct acpi_attach_args aa; 473 struct acpi_make_devnode_state state; 474 struct acpi_scope *as; 475 struct acpi_devnode *ad; 476 ACPI_HANDLE parent; 477 ACPI_STATUS rv; 478 int i; 479 480 TAILQ_INIT(&sc->sc_scopes); 481 482 state.softc = sc; 483 484 /* 485 * Scan the namespace and build our tree. 486 */ 487 for (i = 0; scopes[i] != NULL; i++) { 488 as = malloc(sizeof(*as), M_ACPI, M_WAITOK); 489 as->as_name = scopes[i]; 490 TAILQ_INIT(&as->as_devnodes); 491 492 TAILQ_INSERT_TAIL(&sc->sc_scopes, as, as_list); 493 494 state.scope = as; 495 496 rv = AcpiGetHandle(ACPI_ROOT_OBJECT, scopes[i], 497 &parent); 498 if (ACPI_SUCCESS(rv)) { 499 AcpiWalkNamespace(ACPI_TYPE_ANY, parent, 100, 500 acpi_make_devnode, &state, NULL); 501 } 502 503 /* Now, for this namespace, try and attach the devices. */ 504 TAILQ_FOREACH(ad, &as->as_devnodes, ad_list) { 505 aa.aa_node = ad; 506 aa.aa_iot = sc->sc_iot; 507 aa.aa_memt = sc->sc_memt; 508 aa.aa_pc = sc->sc_pc; 509 aa.aa_pciflags = sc->sc_pciflags; 510 aa.aa_ic = sc->sc_ic; 511 512 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) { 513 /* 514 * XXX We only attach devices which are: 515 * 516 * - present 517 * - enabled 518 * - functioning properly 519 * 520 * However, if enabled, it's decoding resources, 521 * so we should claim them, if possible. 522 * Requires changes to bus_space(9). 523 */ 524 if ((ad->ad_devinfo->Valid & ACPI_VALID_STA) == 525 ACPI_VALID_STA && 526 (ad->ad_devinfo->CurrentStatus & 527 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED| 528 ACPI_STA_DEV_OK)) != 529 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED| 530 ACPI_STA_DEV_OK)) 531 continue; 532 533 /* 534 * XXX Same problem as above... 535 */ 536 if ((ad->ad_devinfo->Valid & ACPI_VALID_HID) 537 == 0) 538 continue; 539 } 540 541 ad->ad_device = config_found_ia(&sc->sc_dev, 542 "acpinodebus", &aa, acpi_print); 543 } 544 } 545 config_found_ia(&sc->sc_dev, "acpiapmbus", NULL, NULL); 546 } 547 548 #ifdef ACPI_ACTIVATE_DEV 549 static void 550 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 551 { 552 ACPI_STATUS rv; 553 ACPI_BUFFER buf; 554 555 buf.Pointer = NULL; 556 buf.Length = ACPI_ALLOCATE_BUFFER; 557 558 #ifdef ACPI_DEBUG 559 aprint_normal("acpi_activate_device: %s, old status=%x\n", 560 (*di)->HardwareId.Value, (*di)->CurrentStatus); 561 #endif 562 563 rv = acpi_allocate_resources(handle); 564 if (ACPI_FAILURE(rv)) { 565 aprint_error("acpi: activate failed for %s\n", 566 (*di)->HardwareId.Value); 567 } else { 568 aprint_verbose("acpi: activated %s\n", 569 (*di)->HardwareId.Value); 570 } 571 572 (void)AcpiGetObjectInfo(handle, &buf); 573 AcpiOsFree(*di); 574 *di = buf.Pointer; 575 576 #ifdef ACPI_DEBUG 577 aprint_normal("acpi_activate_device: %s, new status=%x\n", 578 (*di)->HardwareId.Value, (*di)->CurrentStatus); 579 #endif 580 } 581 #endif /* ACPI_ACTIVATE_DEV */ 582 583 /* 584 * acpi_make_devnode: 585 * 586 * Make an ACPI devnode. 587 */ 588 static ACPI_STATUS 589 acpi_make_devnode(ACPI_HANDLE handle, UINT32 level, void *context, 590 void **status) 591 { 592 struct acpi_make_devnode_state *state = context; 593 #if defined(ACPI_DEBUG) || defined(ACPI_EXTRA_DEBUG) 594 struct acpi_softc *sc = state->softc; 595 #endif 596 struct acpi_scope *as = state->scope; 597 struct acpi_devnode *ad; 598 ACPI_OBJECT_TYPE type; 599 ACPI_BUFFER buf; 600 ACPI_DEVICE_INFO *devinfo; 601 ACPI_STATUS rv; 602 603 rv = AcpiGetType(handle, &type); 604 if (ACPI_SUCCESS(rv)) { 605 buf.Pointer = NULL; 606 buf.Length = ACPI_ALLOCATE_BUFFER; 607 rv = AcpiGetObjectInfo(handle, &buf); 608 if (ACPI_FAILURE(rv)) { 609 #ifdef ACPI_DEBUG 610 aprint_normal("%s: AcpiGetObjectInfo failed: %s\n", 611 sc->sc_dev.dv_xname, AcpiFormatException(rv)); 612 #endif 613 goto out; /* XXX why return OK */ 614 } 615 616 devinfo = buf.Pointer; 617 618 switch (type) { 619 case ACPI_TYPE_DEVICE: 620 #ifdef ACPI_ACTIVATE_DEV 621 if ((devinfo->Valid & (ACPI_VALID_STA|ACPI_VALID_HID)) == 622 (ACPI_VALID_STA|ACPI_VALID_HID) && 623 (devinfo->CurrentStatus & 624 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED)) == 625 ACPI_STA_DEV_PRESENT) 626 acpi_activate_device(handle, &devinfo); 627 628 /* FALLTHROUGH */ 629 #endif 630 631 case ACPI_TYPE_PROCESSOR: 632 case ACPI_TYPE_THERMAL: 633 case ACPI_TYPE_POWER: 634 ad = malloc(sizeof(*ad), M_ACPI, M_NOWAIT|M_ZERO); 635 if (ad == NULL) 636 return AE_NO_MEMORY; 637 638 ad->ad_devinfo = devinfo; 639 ad->ad_handle = handle; 640 ad->ad_level = level; 641 ad->ad_scope = as; 642 ad->ad_type = type; 643 644 TAILQ_INSERT_TAIL(&as->as_devnodes, ad, ad_list); 645 646 if ((ad->ad_devinfo->Valid & ACPI_VALID_HID) == 0) 647 goto out; 648 649 #ifdef ACPI_EXTRA_DEBUG 650 aprint_normal("%s: HID %s found in scope %s level %d\n", 651 sc->sc_dev.dv_xname, 652 ad->ad_devinfo->HardwareId.Value, 653 as->as_name, ad->ad_level); 654 if (ad->ad_devinfo->Valid & ACPI_VALID_UID) 655 aprint_normal(" UID %s\n", 656 ad->ad_devinfo->UniqueId.Value); 657 if (ad->ad_devinfo->Valid & ACPI_VALID_ADR) 658 aprint_normal(" ADR 0x%016qx\n", 659 ad->ad_devinfo->Address); 660 if (ad->ad_devinfo->Valid & ACPI_VALID_STA) 661 aprint_normal(" STA 0x%08x\n", 662 ad->ad_devinfo->CurrentStatus); 663 #endif 664 } 665 } 666 out: 667 return AE_OK; 668 } 669 670 /* 671 * acpi_print: 672 * 673 * Autoconfiguration print routine for ACPI node bus. 674 */ 675 static int 676 acpi_print(void *aux, const char *pnp) 677 { 678 struct acpi_attach_args *aa = aux; 679 ACPI_STATUS rv; 680 681 if (pnp) { 682 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 683 char *pnpstr = 684 aa->aa_node->ad_devinfo->HardwareId.Value; 685 char *str; 686 687 aprint_normal("%s ", pnpstr); 688 rv = acpi_eval_string(aa->aa_node->ad_handle, 689 "_STR", &str); 690 if (ACPI_SUCCESS(rv)) { 691 aprint_normal("[%s] ", str); 692 AcpiOsFree(str); 693 } 694 #ifdef ACPIVERBOSE 695 else { 696 int i; 697 698 for (i = 0; i < sizeof(acpi_knowndevs) / 699 sizeof(acpi_knowndevs[0]); i++) { 700 if (strcmp(acpi_knowndevs[i].pnp, 701 pnpstr) == 0) { 702 aprint_normal("[%s] ", 703 acpi_knowndevs[i].str); 704 } 705 } 706 } 707 708 #endif 709 } else { 710 aprint_normal("ACPI Object Type '%s' (0x%02x) ", 711 AcpiUtGetTypeName(aa->aa_node->ad_devinfo->Type), 712 aa->aa_node->ad_devinfo->Type); 713 } 714 aprint_normal("at %s", pnp); 715 } else { 716 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) { 717 aprint_normal(" (%s", aa->aa_node->ad_devinfo->HardwareId.Value); 718 if (aa->aa_node->ad_devinfo->Valid & ACPI_VALID_UID) { 719 const char *uid; 720 721 uid = aa->aa_node->ad_devinfo->UniqueId.Value; 722 if (uid[0] == '\0') 723 uid = "<null>"; 724 aprint_normal("-%s", uid); 725 } 726 aprint_normal(")"); 727 } 728 } 729 730 return UNCONF; 731 } 732 733 /***************************************************************************** 734 * ACPI fixed-hardware feature handlers 735 *****************************************************************************/ 736 737 static UINT32 acpi_fixed_button_handler(void *); 738 static void acpi_fixed_button_pressed(void *); 739 740 /* 741 * acpi_enable_fixed_events: 742 * 743 * Enable any fixed-hardware feature handlers. 744 */ 745 static void 746 acpi_enable_fixed_events(struct acpi_softc *sc) 747 { 748 static int beenhere; 749 ACPI_STATUS rv; 750 751 KASSERT(beenhere == 0); 752 beenhere = 1; 753 754 /* 755 * Check for fixed-hardware buttons. 756 */ 757 758 if (AcpiGbl_FADT != NULL && AcpiGbl_FADT->PwrButton == 0) { 759 aprint_verbose("%s: fixed-feature power button present\n", 760 sc->sc_dev.dv_xname); 761 sc->sc_smpsw_power.smpsw_name = sc->sc_dev.dv_xname; 762 sc->sc_smpsw_power.smpsw_type = PSWITCH_TYPE_POWER; 763 if (sysmon_pswitch_register(&sc->sc_smpsw_power) != 0) { 764 aprint_error("%s: unable to register fixed power " 765 "button with sysmon\n", sc->sc_dev.dv_xname); 766 } else { 767 rv = AcpiInstallFixedEventHandler( 768 ACPI_EVENT_POWER_BUTTON, 769 acpi_fixed_button_handler, &sc->sc_smpsw_power); 770 if (ACPI_FAILURE(rv)) { 771 aprint_error("%s: unable to install handler " 772 "for fixed power button: %s\n", 773 sc->sc_dev.dv_xname, 774 AcpiFormatException(rv)); 775 } 776 } 777 } 778 779 if (AcpiGbl_FADT != NULL && AcpiGbl_FADT->SleepButton == 0) { 780 aprint_verbose("%s: fixed-feature sleep button present\n", 781 sc->sc_dev.dv_xname); 782 sc->sc_smpsw_sleep.smpsw_name = sc->sc_dev.dv_xname; 783 sc->sc_smpsw_sleep.smpsw_type = PSWITCH_TYPE_SLEEP; 784 if (sysmon_pswitch_register(&sc->sc_smpsw_power) != 0) { 785 aprint_error("%s: unable to register fixed sleep " 786 "button with sysmon\n", sc->sc_dev.dv_xname); 787 } else { 788 rv = AcpiInstallFixedEventHandler( 789 ACPI_EVENT_SLEEP_BUTTON, 790 acpi_fixed_button_handler, &sc->sc_smpsw_sleep); 791 if (ACPI_FAILURE(rv)) { 792 aprint_error("%s: unable to install handler " 793 "for fixed sleep button: %s\n", 794 sc->sc_dev.dv_xname, 795 AcpiFormatException(rv)); 796 } 797 } 798 } 799 } 800 801 /* 802 * acpi_fixed_button_handler: 803 * 804 * Event handler for the fixed buttons. 805 */ 806 static UINT32 807 acpi_fixed_button_handler(void *context) 808 { 809 struct sysmon_pswitch *smpsw = context; 810 int rv; 811 812 #ifdef ACPI_BUT_DEBUG 813 printf("%s: fixed button handler\n", smpsw->smpsw_name); 814 #endif 815 816 rv = AcpiOsQueueForExecution(OSD_PRIORITY_LO, 817 acpi_fixed_button_pressed, smpsw); 818 if (ACPI_FAILURE(rv)) 819 printf("%s: WARNING: unable to queue fixed button pressed " 820 "callback: %s\n", smpsw->smpsw_name, 821 AcpiFormatException(rv)); 822 823 return ACPI_INTERRUPT_HANDLED; 824 } 825 826 /* 827 * acpi_fixed_button_pressed: 828 * 829 * Deal with a fixed button being pressed. 830 */ 831 static void 832 acpi_fixed_button_pressed(void *context) 833 { 834 struct sysmon_pswitch *smpsw = context; 835 836 #ifdef ACPI_BUT_DEBUG 837 printf("%s: fixed button pressed, calling sysmon\n", 838 smpsw->smpsw_name); 839 #endif 840 841 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 842 } 843 844 /***************************************************************************** 845 * ACPI utility routines. 846 *****************************************************************************/ 847 848 /* 849 * acpi_eval_integer: 850 * 851 * Evaluate an integer object. 852 */ 853 ACPI_STATUS 854 acpi_eval_integer(ACPI_HANDLE handle, const char *path, ACPI_INTEGER *valp) 855 { 856 ACPI_STATUS rv; 857 ACPI_BUFFER buf; 858 ACPI_OBJECT param; 859 860 if (handle == NULL) 861 handle = ACPI_ROOT_OBJECT; 862 863 buf.Pointer = ¶m; 864 buf.Length = sizeof(param); 865 866 rv = AcpiEvaluateObjectTyped(handle, path, NULL, &buf, ACPI_TYPE_INTEGER); 867 if (ACPI_SUCCESS(rv)) 868 *valp = param.Integer.Value; 869 870 return rv; 871 } 872 873 /* 874 * acpi_eval_string: 875 * 876 * Evaluate a (Unicode) string object. 877 */ 878 ACPI_STATUS 879 acpi_eval_string(ACPI_HANDLE handle, const char *path, char **stringp) 880 { 881 ACPI_STATUS rv; 882 ACPI_BUFFER buf; 883 884 if (handle == NULL) 885 handle = ACPI_ROOT_OBJECT; 886 887 buf.Pointer = NULL; 888 buf.Length = ACPI_ALLOCATE_BUFFER; 889 890 rv = AcpiEvaluateObjectTyped(handle, path, NULL, &buf, ACPI_TYPE_STRING); 891 if (ACPI_SUCCESS(rv)) { 892 ACPI_OBJECT *param = buf.Pointer; 893 const char *ptr = param->String.Pointer; 894 size_t len = param->String.Length; 895 if ((*stringp = AcpiOsAllocate(len)) == NULL) 896 rv = AE_NO_MEMORY; 897 else 898 (void)memcpy(*stringp, ptr, len); 899 AcpiOsFree(param); 900 } 901 902 return rv; 903 } 904 905 906 /* 907 * acpi_eval_struct: 908 * 909 * Evaluate a more complex structure. 910 * Caller must free buf.Pointer by AcpiOsFree(). 911 */ 912 ACPI_STATUS 913 acpi_eval_struct(ACPI_HANDLE handle, const char *path, ACPI_BUFFER *bufp) 914 { 915 ACPI_STATUS rv; 916 917 if (handle == NULL) 918 handle = ACPI_ROOT_OBJECT; 919 920 bufp->Pointer = NULL; 921 bufp->Length = ACPI_ALLOCATE_BUFFER; 922 923 rv = AcpiEvaluateObject(handle, path, NULL, bufp); 924 925 return rv; 926 } 927 928 /* 929 * acpi_foreach_package_object: 930 * 931 * Iterate over all objects in a in a packages and pass then all 932 * to a function. If the called function returns non AE_OK, the 933 * iteration is stopped and that value is returned. 934 */ 935 936 ACPI_STATUS 937 acpi_foreach_package_object(ACPI_OBJECT *pkg, 938 ACPI_STATUS (*func)(ACPI_OBJECT *, void *), 939 void *arg) 940 { 941 ACPI_STATUS rv = AE_OK; 942 int i; 943 944 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE) 945 return AE_BAD_PARAMETER; 946 947 for (i = 0; i < pkg->Package.Count; i++) { 948 rv = (*func)(&pkg->Package.Elements[i], arg); 949 if (ACPI_FAILURE(rv)) 950 break; 951 } 952 953 return rv; 954 } 955 956 const char * 957 acpi_name(ACPI_HANDLE handle) 958 { 959 static char buffer[80]; 960 ACPI_BUFFER buf; 961 ACPI_STATUS rv; 962 963 buf.Length = sizeof(buffer); 964 buf.Pointer = buffer; 965 966 rv = AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf); 967 if (ACPI_FAILURE(rv)) 968 return "(unknown acpi path)"; 969 return buffer; 970 } 971 972 /* 973 * acpi_get: 974 * 975 * Fetch data info the specified (empty) ACPI buffer. 976 * Caller must free buf.Pointer by AcpiOsFree(). 977 */ 978 ACPI_STATUS 979 acpi_get(ACPI_HANDLE handle, ACPI_BUFFER *buf, 980 ACPI_STATUS (*getit)(ACPI_HANDLE, ACPI_BUFFER *)) 981 { 982 buf->Pointer = NULL; 983 buf->Length = ACPI_ALLOCATE_BUFFER; 984 985 return (*getit)(handle, buf); 986 } 987 988 989 /* 990 * acpi_match_hid 991 * 992 * Match given ids against _HID and _CIDs 993 */ 994 int 995 acpi_match_hid(ACPI_DEVICE_INFO *ad, const char * const *ids) 996 { 997 int i; 998 999 while (*ids) { 1000 if (ad->Valid & ACPI_VALID_HID) { 1001 if (pmatch(ad->HardwareId.Value, *ids, NULL) == 2) 1002 return 1; 1003 } 1004 1005 if (ad->Valid & ACPI_VALID_CID) { 1006 for (i = 0; i < ad->CompatibilityId.Count; i++) { 1007 if (pmatch(ad->CompatibilityId.Id[i].Value, *ids, NULL) == 2) 1008 return 1; 1009 } 1010 } 1011 ids++; 1012 } 1013 1014 return 0; 1015 } 1016 1017 /* 1018 * acpi_set_wake_gpe 1019 * 1020 * Set GPE as both Runtime and Wake 1021 */ 1022 void 1023 acpi_set_wake_gpe(ACPI_HANDLE handle) 1024 { 1025 ACPI_BUFFER buf; 1026 ACPI_STATUS rv; 1027 ACPI_OBJECT *p, *elt; 1028 1029 rv = acpi_eval_struct(handle, METHOD_NAME__PRW, &buf); 1030 if (ACPI_FAILURE(rv)) 1031 return; /* just ignore */ 1032 1033 p = buf.Pointer; 1034 if (p->Type != ACPI_TYPE_PACKAGE || p->Package.Count < 2) 1035 goto out; /* just ignore */ 1036 1037 elt = p->Package.Elements; 1038 1039 /* TBD: package support */ 1040 AcpiSetGpeType(NULL, elt[0].Integer.Value, ACPI_GPE_TYPE_WAKE_RUN); 1041 AcpiEnableGpe(NULL, elt[0].Integer.Value, ACPI_NOT_ISR); 1042 1043 out: 1044 AcpiOsFree(buf.Pointer); 1045 } 1046 1047 1048 /***************************************************************************** 1049 * ACPI sleep support. 1050 *****************************************************************************/ 1051 1052 static int 1053 is_available_state(struct acpi_softc *sc, int state) 1054 { 1055 UINT8 type_a, type_b; 1056 1057 return ACPI_SUCCESS(AcpiGetSleepTypeData((UINT8)state, 1058 &type_a, &type_b)); 1059 } 1060 1061 /* 1062 * acpi_enter_sleep_state: 1063 * 1064 * enter to the specified sleep state. 1065 */ 1066 1067 ACPI_STATUS 1068 acpi_enter_sleep_state(struct acpi_softc *sc, int state) 1069 { 1070 int s; 1071 ACPI_STATUS ret = AE_OK; 1072 1073 if (state == acpi_sleepstate) 1074 return AE_OK; 1075 1076 aprint_normal("%s: entering state %d\n", sc->sc_dev.dv_xname, state); 1077 1078 switch (state) { 1079 case ACPI_STATE_S0: 1080 break; 1081 case ACPI_STATE_S1: 1082 case ACPI_STATE_S2: 1083 case ACPI_STATE_S3: 1084 case ACPI_STATE_S4: 1085 if (!is_available_state(sc, state)) { 1086 aprint_error("%s: cannot enter the sleep state (%d).\n", 1087 sc->sc_dev.dv_xname, state); 1088 break; 1089 } 1090 ret = AcpiEnterSleepStatePrep(state); 1091 if (ACPI_FAILURE(ret)) { 1092 aprint_error("%s: failed preparing to sleep (%s)\n", 1093 sc->sc_dev.dv_xname, AcpiFormatException(ret)); 1094 break; 1095 } 1096 acpi_sleepstate = state; 1097 if (state == ACPI_STATE_S1) { 1098 /* just enter the state */ 1099 acpi_md_OsDisableInterrupt(); 1100 AcpiEnterSleepState((UINT8)state); 1101 } else { 1102 /* XXX: powerhooks(9) framework is too poor to 1103 * support ACPI sleep state... 1104 */ 1105 dopowerhooks(PWR_SOFTSUSPEND); 1106 s = splhigh(); 1107 dopowerhooks(PWR_SUSPEND); 1108 acpi_md_sleep(state); 1109 dopowerhooks(PWR_RESUME); 1110 splx(s); 1111 dopowerhooks(PWR_SOFTRESUME); 1112 if (state==ACPI_STATE_S4) 1113 AcpiEnable(); 1114 } 1115 AcpiLeaveSleepState((UINT8)state); 1116 break; 1117 case ACPI_STATE_S5: 1118 ret = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1119 if (ACPI_FAILURE(ret)) { 1120 aprint_error("%s: failed preparing to sleep (%s)\n", 1121 sc->sc_dev.dv_xname, AcpiFormatException(ret)); 1122 break; 1123 } 1124 acpi_sleepstate = state; 1125 acpi_md_OsDisableInterrupt(); 1126 AcpiEnterSleepState(ACPI_STATE_S5); 1127 aprint_error("%s: WARNING powerdown failed!\n", 1128 sc->sc_dev.dv_xname); 1129 break; 1130 } 1131 1132 aprint_normal("%s: resuming\n", sc->sc_dev.dv_xname); 1133 acpi_sleepstate = ACPI_STATE_S0; 1134 return ret; 1135 } 1136 1137 #if defined(ACPI_ACTIVATE_DEV) 1138 /* XXX This very incomplete */ 1139 ACPI_STATUS 1140 acpi_allocate_resources(ACPI_HANDLE handle) 1141 { 1142 ACPI_BUFFER bufp, bufc, bufn; 1143 ACPI_RESOURCE *resp, *resc, *resn; 1144 ACPI_RESOURCE_IRQ *irq; 1145 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 1146 ACPI_STATUS rv; 1147 uint delta; 1148 1149 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 1150 if (ACPI_FAILURE(rv)) 1151 goto out; 1152 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 1153 if (ACPI_FAILURE(rv)) { 1154 goto out1; 1155 } 1156 1157 bufn.Length = 1000; 1158 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 1159 resp = bufp.Pointer; 1160 resc = bufc.Pointer; 1161 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 1162 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1163 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 1164 resp = ACPI_NEXT_RESOURCE(resp); 1165 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 1166 break; 1167 /* Found identical Id */ 1168 resn->Type = resc->Type; 1169 switch (resc->Type) { 1170 case ACPI_RESOURCE_TYPE_IRQ: 1171 memcpy(&resn->Data, &resp->Data, 1172 sizeof(ACPI_RESOURCE_IRQ)); 1173 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 1174 irq->Interrupts[0] = 1175 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 1176 Interrupts[irq->InterruptCount-1]; 1177 irq->InterruptCount = 1; 1178 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 1179 break; 1180 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 1181 memcpy(&resn->Data, &resp->Data, 1182 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 1183 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 1184 #if 0 1185 /* 1186 * XXX not duplicating the interrupt logic above 1187 * because its not clear what it accomplishes. 1188 */ 1189 xirq->Interrupts[0] = 1190 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 1191 Interrupts[irq->NumberOfInterrupts-1]; 1192 xirq->NumberOfInterrupts = 1; 1193 #endif 1194 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 1195 break; 1196 case ACPI_RESOURCE_TYPE_IO: 1197 memcpy(&resn->Data, &resp->Data, 1198 sizeof(ACPI_RESOURCE_IO)); 1199 resn->Length = resp->Length; 1200 break; 1201 default: 1202 printf("acpi_allocate_resources: res=%d\n", resc->Type); 1203 rv = AE_BAD_DATA; 1204 goto out2; 1205 } 1206 resc = ACPI_NEXT_RESOURCE(resc); 1207 resn = ACPI_NEXT_RESOURCE(resn); 1208 resp = ACPI_NEXT_RESOURCE(resp); 1209 delta = (UINT8 *)resn - (UINT8 *)bufn.Pointer; 1210 if (delta >= 1211 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 1212 bufn.Length *= 2; 1213 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 1214 M_ACPI, M_WAITOK); 1215 resn = (ACPI_RESOURCE *)((UINT8 *)bufn.Pointer + delta); 1216 } 1217 } 1218 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 1219 printf("acpi_allocate_resources: resc not exhausted\n"); 1220 rv = AE_BAD_DATA; 1221 goto out3; 1222 } 1223 1224 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 1225 rv = AcpiSetCurrentResources(handle, &bufn); 1226 if (ACPI_FAILURE(rv)) { 1227 printf("acpi_allocate_resources: AcpiSetCurrentResources %s\n", 1228 AcpiFormatException(rv)); 1229 } 1230 1231 out3: 1232 free(bufn.Pointer, M_ACPI); 1233 out2: 1234 AcpiOsFree(bufc.Pointer); 1235 out1: 1236 AcpiOsFree(bufp.Pointer); 1237 out: 1238 return rv; 1239 } 1240 #endif /* ACPI_ACTIVATE_DEV */ 1241 1242 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1243 { 1244 const struct sysctlnode *node; 1245 const struct sysctlnode *ssnode; 1246 1247 if (sysctl_createv(clog, 0, NULL, NULL, 1248 CTLFLAG_PERMANENT, 1249 CTLTYPE_NODE, "hw", NULL, 1250 NULL, 0, NULL, 0, 1251 CTL_HW, CTL_EOL) != 0) 1252 return; 1253 1254 if (sysctl_createv(clog, 0, NULL, &node, 1255 CTLFLAG_PERMANENT, 1256 CTLTYPE_NODE, "acpi", NULL, 1257 NULL, 0, NULL, 0, 1258 CTL_HW, CTL_CREATE, CTL_EOL) != 0) 1259 return; 1260 1261 acpi_node = node->sysctl_num; 1262 1263 /* ACPI sleepstate sysctl */ 1264 if (sysctl_createv(NULL, 0, NULL, &node, 1265 CTLFLAG_PERMANENT, 1266 CTLTYPE_NODE, "machdep", NULL, 1267 NULL, 0, NULL, 0, CTL_MACHDEP, CTL_EOL) != 0) 1268 return; 1269 if (sysctl_createv(NULL, 0, &node, &ssnode, 1270 CTLFLAG_READWRITE, CTLTYPE_INT, "sleep_state", 1271 NULL, sysctl_hw_acpi_sleepstate, 0, NULL, 0, CTL_CREATE, 1272 CTL_EOL) != 0) 1273 return; 1274 } 1275 1276 static int 1277 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1278 { 1279 int error, t; 1280 struct sysctlnode node; 1281 1282 node = *rnode; 1283 t = acpi_sleepstate; 1284 node.sysctl_data = &t; 1285 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1286 if (error || newp == NULL) 1287 return error; 1288 1289 if (acpi_softc == NULL) 1290 return ENOSYS; 1291 1292 acpi_enter_sleep_state(acpi_softc, t); 1293 1294 return 0; 1295 } 1296
Indexes created Sun Sep 21 20:09:37 GMT 2025