acpi_cpu.c revision 1.38
1 /* $NetBSD: acpi_cpu.c,v 1.38 2011/03/19 12:57:30 jruoho Exp $ */ 2 3 /*- 4 * Copyright (c) 2010, 2011 Jukka Ruohonen <jruohonen (at) iki.fi> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: acpi_cpu.c,v 1.38 2011/03/19 12:57:30 jruoho Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/cpu.h> 34 #include <sys/evcnt.h> 35 #include <sys/kernel.h> 36 #include <sys/kmem.h> 37 #include <sys/module.h> 38 #include <sys/mutex.h> 39 #include <sys/sysctl.h> 40 41 #include <dev/acpi/acpireg.h> 42 #include <dev/acpi/acpivar.h> 43 #include <dev/acpi/acpi_cpu.h> 44 45 #include <machine/acpi_machdep.h> 46 #include <machine/cpuvar.h> 47 48 #define _COMPONENT ACPI_BUS_COMPONENT 49 ACPI_MODULE_NAME ("acpi_cpu") 50 51 static int acpicpu_match(device_t, cfdata_t, void *); 52 static void acpicpu_attach(device_t, device_t, void *); 53 static int acpicpu_detach(device_t, int); 54 static int acpicpu_once_attach(void); 55 static int acpicpu_once_detach(void); 56 static void acpicpu_start(device_t); 57 static void acpicpu_sysctl(device_t); 58 59 static ACPI_STATUS acpicpu_object(ACPI_HANDLE, struct acpicpu_object *); 60 static int acpicpu_find(struct cpu_info *, 61 struct acpi_devnode **); 62 static uint32_t acpicpu_cap(struct acpicpu_softc *); 63 static ACPI_STATUS acpicpu_cap_pdc(struct acpicpu_softc *, uint32_t); 64 static ACPI_STATUS acpicpu_cap_osc(struct acpicpu_softc *, 65 uint32_t, uint32_t *); 66 static void acpicpu_notify(ACPI_HANDLE, uint32_t, void *); 67 static bool acpicpu_suspend(device_t, const pmf_qual_t *); 68 static bool acpicpu_resume(device_t, const pmf_qual_t *); 69 static void acpicpu_evcnt_attach(device_t); 70 static void acpicpu_evcnt_detach(device_t); 71 static void acpicpu_debug_print(device_t); 72 static const char *acpicpu_debug_print_method(uint8_t); 73 static const char *acpicpu_debug_print_dep(uint32_t); 74 75 static uint32_t acpicpu_count = 0; 76 struct acpicpu_softc **acpicpu_sc = NULL; 77 static struct sysctllog *acpicpu_log = NULL; 78 static bool acpicpu_dynamic = true; 79 static bool acpicpu_passive = true; 80 81 static const struct { 82 const char *manu; 83 const char *prod; 84 const char *vers; 85 } acpicpu_quirks[] = { 86 { "Supermicro", "PDSMi-LN4", "0123456789" }, 87 }; 88 89 static const char * const acpicpu_hid[] = { 90 "ACPI0007", 91 NULL 92 }; 93 94 CFATTACH_DECL_NEW(acpicpu, sizeof(struct acpicpu_softc), 95 acpicpu_match, acpicpu_attach, acpicpu_detach, NULL); 96 97 static int 98 acpicpu_match(device_t parent, cfdata_t match, void *aux) 99 { 100 const char *manu, *prod, *vers; 101 struct cpu_info *ci; 102 size_t i; 103 104 if (acpi_softc == NULL) 105 return 0; 106 107 manu = pmf_get_platform("system-manufacturer"); 108 prod = pmf_get_platform("system-product-name"); 109 vers = pmf_get_platform("system-version"); 110 111 if (manu != NULL && prod != NULL && vers != NULL) { 112 113 for (i = 0; i < __arraycount(acpicpu_quirks); i++) { 114 115 if (strcasecmp(acpicpu_quirks[i].manu, manu) == 0 && 116 strcasecmp(acpicpu_quirks[i].prod, prod) == 0 && 117 strcasecmp(acpicpu_quirks[i].vers, vers) == 0) 118 return 0; 119 } 120 } 121 122 ci = acpicpu_md_match(parent, match, aux); 123 124 if (ci == NULL) 125 return 0; 126 127 return acpicpu_find(ci, NULL); 128 } 129 130 static void 131 acpicpu_attach(device_t parent, device_t self, void *aux) 132 { 133 struct acpicpu_softc *sc = device_private(self); 134 struct cpu_info *ci; 135 cpuid_t id; 136 int rv; 137 138 ci = acpicpu_md_attach(parent, self, aux); 139 140 if (ci == NULL) 141 return; 142 143 sc->sc_ci = ci; 144 sc->sc_dev = self; 145 sc->sc_cold = true; 146 sc->sc_node = NULL; 147 148 rv = acpicpu_find(ci, &sc->sc_node); 149 150 if (rv == 0) { 151 aprint_normal(": failed to match processor\n"); 152 return; 153 } 154 155 if (acpicpu_once_attach() != 0) { 156 aprint_normal(": failed to initialize\n"); 157 return; 158 } 159 160 KASSERT(acpi_softc != NULL); 161 KASSERT(acpicpu_sc != NULL); 162 KASSERT(sc->sc_node != NULL); 163 164 id = sc->sc_ci->ci_acpiid; 165 166 if (acpicpu_sc[id] != NULL) { 167 aprint_normal(": already attached\n"); 168 return; 169 } 170 171 aprint_naive("\n"); 172 aprint_normal(": ACPI CPU\n"); 173 174 rv = acpicpu_object(sc->sc_node->ad_handle, &sc->sc_object); 175 176 if (ACPI_FAILURE(rv)) 177 aprint_verbose_dev(self, "failed to obtain CPU object\n"); 178 179 acpicpu_count++; 180 acpicpu_sc[id] = sc; 181 182 sc->sc_cap = acpicpu_cap(sc); 183 sc->sc_ncpus = acpi_md_ncpus(); 184 sc->sc_flags = acpicpu_md_flags(); 185 186 KASSERT(acpicpu_count <= sc->sc_ncpus); 187 KASSERT(sc->sc_node->ad_device == NULL); 188 189 sc->sc_node->ad_device = self; 190 191 __cpu_simple_lock_init(&sc->sc_lock); 192 mutex_init(&sc->sc_mtx, MUTEX_DEFAULT, IPL_NONE); 193 194 acpicpu_cstate_attach(self); 195 acpicpu_pstate_attach(self); 196 acpicpu_tstate_attach(self); 197 198 acpicpu_debug_print(self); 199 acpicpu_evcnt_attach(self); 200 201 (void)config_interrupts(self, acpicpu_start); 202 (void)acpi_register_notify(sc->sc_node, acpicpu_notify); 203 (void)pmf_device_register(self, acpicpu_suspend, acpicpu_resume); 204 } 205 206 static int 207 acpicpu_detach(device_t self, int flags) 208 { 209 struct acpicpu_softc *sc = device_private(self); 210 int rv = 0; 211 212 sc->sc_cold = true; 213 214 acpicpu_evcnt_detach(self); 215 acpi_deregister_notify(sc->sc_node); 216 217 if ((sc->sc_flags & ACPICPU_FLAG_C) != 0) 218 rv = acpicpu_cstate_detach(self); 219 220 if (rv != 0) 221 return rv; 222 223 if ((sc->sc_flags & ACPICPU_FLAG_P) != 0) 224 rv = acpicpu_pstate_detach(self); 225 226 if (rv != 0) 227 return rv; 228 229 if ((sc->sc_flags & ACPICPU_FLAG_T) != 0) 230 rv = acpicpu_tstate_detach(self); 231 232 if (rv != 0) 233 return rv; 234 235 mutex_destroy(&sc->sc_mtx); 236 237 sc->sc_node->ad_device = NULL; 238 239 acpicpu_count--; 240 acpicpu_once_detach(); 241 242 return 0; 243 } 244 245 static int 246 acpicpu_once_attach(void) 247 { 248 struct acpicpu_softc *sc; 249 unsigned int i; 250 251 if (acpicpu_count != 0) 252 return 0; 253 254 KASSERT(acpicpu_sc == NULL); 255 KASSERT(acpicpu_log == NULL); 256 257 acpicpu_sc = kmem_zalloc(maxcpus * sizeof(*sc), KM_SLEEP); 258 259 if (acpicpu_sc == NULL) 260 return ENOMEM; 261 262 for (i = 0; i < maxcpus; i++) 263 acpicpu_sc[i] = NULL; 264 265 return 0; 266 } 267 268 static int 269 acpicpu_once_detach(void) 270 { 271 struct acpicpu_softc *sc; 272 273 if (acpicpu_count != 0) 274 return EDEADLK; 275 276 if (acpicpu_log != NULL) 277 sysctl_teardown(&acpicpu_log); 278 279 if (acpicpu_sc != NULL) 280 kmem_free(acpicpu_sc, maxcpus * sizeof(*sc)); 281 282 return 0; 283 } 284 285 static void 286 acpicpu_start(device_t self) 287 { 288 struct acpicpu_softc *sc = device_private(self); 289 static uint32_t count = 0; 290 291 /* 292 * Run the state-specific initialization routines. These 293 * must run only once, after interrupts have been enabled, 294 * all CPUs are running, and all ACPI CPUs have attached. 295 */ 296 if (++count != acpicpu_count || acpicpu_count != sc->sc_ncpus) { 297 sc->sc_cold = false; 298 return; 299 } 300 301 /* 302 * Set the last ACPI CPU as non-cold 303 * only after C-states are enabled. 304 */ 305 if ((sc->sc_flags & ACPICPU_FLAG_C) != 0) 306 acpicpu_cstate_start(self); 307 308 sc->sc_cold = false; 309 310 if ((sc->sc_flags & ACPICPU_FLAG_P) != 0) 311 acpicpu_pstate_start(self); 312 313 if ((sc->sc_flags & ACPICPU_FLAG_T) != 0) 314 acpicpu_tstate_start(self); 315 316 acpicpu_sysctl(self); 317 aprint_debug_dev(self, "ACPI CPUs started\n"); 318 } 319 320 static void 321 acpicpu_sysctl(device_t self) 322 { 323 const struct sysctlnode *node; 324 int err; 325 326 KASSERT(acpicpu_log == NULL); 327 328 err = sysctl_createv(&acpicpu_log, 0, NULL, &node, 329 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", NULL, 330 NULL, 0, NULL, 0, CTL_HW, CTL_EOL); 331 332 if (err != 0) 333 goto fail; 334 335 err = sysctl_createv(&acpicpu_log, 0, &node, &node, 336 CTLFLAG_PERMANENT, CTLTYPE_NODE, "acpi", NULL, 337 NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL); 338 339 if (err != 0) 340 goto fail; 341 342 err = sysctl_createv(&acpicpu_log, 0, &node, &node, 343 0, CTLTYPE_NODE, "cpu", SYSCTL_DESCR("ACPI CPU"), 344 NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL); 345 346 if (err != 0) 347 goto fail; 348 349 err = sysctl_createv(&acpicpu_log, 0, &node, NULL, 350 CTLFLAG_READWRITE, CTLTYPE_BOOL, "dynamic", 351 SYSCTL_DESCR("Dynamic states"), NULL, 0, 352 &acpicpu_dynamic, 0, CTL_CREATE, CTL_EOL); 353 354 if (err != 0) 355 goto fail; 356 357 err = sysctl_createv(&acpicpu_log, 0, &node, NULL, 358 CTLFLAG_READWRITE, CTLTYPE_BOOL, "passive", 359 SYSCTL_DESCR("Passive cooling"), NULL, 0, 360 &acpicpu_passive, 0, CTL_CREATE, CTL_EOL); 361 362 if (err != 0) 363 goto fail; 364 365 return; 366 367 fail: 368 aprint_error_dev(self, "failed to initialize sysctl (err %d)\n", err); 369 } 370 371 static ACPI_STATUS 372 acpicpu_object(ACPI_HANDLE hdl, struct acpicpu_object *ao) 373 { 374 ACPI_OBJECT *obj; 375 ACPI_BUFFER buf; 376 ACPI_STATUS rv; 377 378 rv = acpi_eval_struct(hdl, NULL, &buf); 379 380 if (ACPI_FAILURE(rv)) 381 goto out; 382 383 obj = buf.Pointer; 384 385 if (obj->Type != ACPI_TYPE_PROCESSOR) { 386 rv = AE_TYPE; 387 goto out; 388 } 389 390 if (obj->Processor.ProcId > (uint32_t)maxcpus) { 391 rv = AE_LIMIT; 392 goto out; 393 } 394 395 KDASSERT((uint64_t)obj->Processor.PblkAddress < UINT32_MAX); 396 397 if (ao != NULL) { 398 ao->ao_procid = obj->Processor.ProcId; 399 ao->ao_pblklen = obj->Processor.PblkLength; 400 ao->ao_pblkaddr = obj->Processor.PblkAddress; 401 } 402 403 out: 404 if (buf.Pointer != NULL) 405 ACPI_FREE(buf.Pointer); 406 407 return rv; 408 } 409 410 static int 411 acpicpu_find(struct cpu_info *ci, struct acpi_devnode **ptr) 412 { 413 struct acpi_softc *sc = acpi_softc; 414 struct acpicpu_object ao; 415 struct acpi_devnode *ad; 416 ACPI_INTEGER val; 417 ACPI_STATUS rv; 418 419 if (sc == NULL || acpi_active == 0) 420 return 0; 421 422 /* 423 * CPUs are declared in the ACPI namespace 424 * either as a Processor() or as a Device(). 425 * In both cases the MADT entries are used 426 * for the match (see ACPI 4.0, section 8.4). 427 */ 428 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 429 430 if (ad->ad_type == ACPI_TYPE_PROCESSOR) { 431 432 rv = acpicpu_object(ad->ad_handle, &ao); 433 434 if (ACPI_SUCCESS(rv) && ci->ci_acpiid == ao.ao_procid) 435 goto out; 436 } 437 438 if (acpi_match_hid(ad->ad_devinfo, acpicpu_hid) != 0) { 439 440 rv = acpi_eval_integer(ad->ad_handle, "_UID", &val); 441 442 if (ACPI_SUCCESS(rv) && ci->ci_acpiid == val) 443 goto out; 444 } 445 } 446 447 return 0; 448 449 out: 450 if (ptr != NULL) 451 *ptr = ad; 452 453 return 10; 454 } 455 456 static uint32_t 457 acpicpu_cap(struct acpicpu_softc *sc) 458 { 459 uint32_t flags, cap = 0; 460 const char *str; 461 ACPI_STATUS rv; 462 463 /* 464 * Query and set machine-dependent capabilities. 465 * Note that the Intel-specific _PDC method was 466 * deprecated in the ACPI 3.0 in favor of _OSC. 467 */ 468 flags = acpicpu_md_cap(); 469 rv = acpicpu_cap_osc(sc, flags, &cap); 470 471 if (ACPI_FAILURE(rv) && rv != AE_NOT_FOUND) { 472 str = "_OSC"; 473 goto fail; 474 } 475 476 rv = acpicpu_cap_pdc(sc, flags); 477 478 if (ACPI_FAILURE(rv) && rv != AE_NOT_FOUND) { 479 str = "_PDC"; 480 goto fail; 481 } 482 483 if (cap == 0) 484 cap = flags; 485 486 return cap; 487 488 fail: 489 aprint_error_dev(sc->sc_dev, "failed to evaluate " 490 "%s: %s\n", str, AcpiFormatException(rv)); 491 492 return 0; 493 } 494 495 static ACPI_STATUS 496 acpicpu_cap_pdc(struct acpicpu_softc *sc, uint32_t flags) 497 { 498 ACPI_OBJECT_LIST arg; 499 ACPI_OBJECT obj; 500 uint32_t cap[3]; 501 502 arg.Count = 1; 503 arg.Pointer = &obj; 504 505 cap[0] = ACPICPU_PDC_REVID; 506 cap[1] = 1; 507 cap[2] = flags; 508 509 obj.Type = ACPI_TYPE_BUFFER; 510 obj.Buffer.Length = sizeof(cap); 511 obj.Buffer.Pointer = (void *)cap; 512 513 return AcpiEvaluateObject(sc->sc_node->ad_handle, "_PDC", &arg, NULL); 514 } 515 516 static ACPI_STATUS 517 acpicpu_cap_osc(struct acpicpu_softc *sc, uint32_t flags, uint32_t *val) 518 { 519 ACPI_OBJECT_LIST arg; 520 ACPI_OBJECT obj[4]; 521 ACPI_OBJECT *osc; 522 ACPI_BUFFER buf; 523 ACPI_STATUS rv; 524 uint32_t cap[2]; 525 uint32_t *ptr; 526 int i = 5; 527 528 static uint8_t intel_uuid[16] = { 529 0x16, 0xA6, 0x77, 0x40, 0x0C, 0x29, 0xBE, 0x47, 530 0x9E, 0xBD, 0xD8, 0x70, 0x58, 0x71, 0x39, 0x53 531 }; 532 533 cap[0] = ACPI_OSC_QUERY; 534 cap[1] = flags; 535 536 again: 537 arg.Count = 4; 538 arg.Pointer = obj; 539 540 obj[0].Type = ACPI_TYPE_BUFFER; 541 obj[0].Buffer.Length = sizeof(intel_uuid); 542 obj[0].Buffer.Pointer = intel_uuid; 543 544 obj[1].Type = ACPI_TYPE_INTEGER; 545 obj[1].Integer.Value = ACPICPU_PDC_REVID; 546 547 obj[2].Type = ACPI_TYPE_INTEGER; 548 obj[2].Integer.Value = __arraycount(cap); 549 550 obj[3].Type = ACPI_TYPE_BUFFER; 551 obj[3].Buffer.Length = sizeof(cap); 552 obj[3].Buffer.Pointer = (void *)cap; 553 554 buf.Pointer = NULL; 555 buf.Length = ACPI_ALLOCATE_LOCAL_BUFFER; 556 557 rv = AcpiEvaluateObject(sc->sc_node->ad_handle, "_OSC", &arg, &buf); 558 559 if (ACPI_FAILURE(rv)) 560 goto out; 561 562 osc = buf.Pointer; 563 564 if (osc->Type != ACPI_TYPE_BUFFER) { 565 rv = AE_TYPE; 566 goto out; 567 } 568 569 if (osc->Buffer.Length != sizeof(cap)) { 570 rv = AE_BUFFER_OVERFLOW; 571 goto out; 572 } 573 574 ptr = (uint32_t *)osc->Buffer.Pointer; 575 576 if ((ptr[0] & ACPI_OSC_ERROR) != 0) { 577 rv = AE_ERROR; 578 goto out; 579 } 580 581 if ((ptr[0] & (ACPI_OSC_ERROR_REV | ACPI_OSC_ERROR_UUID)) != 0) { 582 rv = AE_BAD_PARAMETER; 583 goto out; 584 } 585 586 /* 587 * "It is strongly recommended that the OS evaluate 588 * _OSC with the Query Support Flag set until _OSC 589 * returns the Capabilities Masked bit clear, to 590 * negotiate the set of features to be granted to 591 * the OS for native support (ACPI 4.0, 6.2.10)." 592 */ 593 if ((ptr[0] & ACPI_OSC_ERROR_MASKED) != 0 && i >= 0) { 594 595 ACPI_FREE(buf.Pointer); 596 i--; 597 598 goto again; 599 } 600 601 if ((cap[0] & ACPI_OSC_QUERY) != 0) { 602 603 ACPI_FREE(buf.Pointer); 604 cap[0] &= ~ACPI_OSC_QUERY; 605 606 goto again; 607 } 608 609 /* 610 * It is permitted for _OSC to return all 611 * bits cleared, but this is specified to 612 * vary on per-device basis. Assume that 613 * everything rather than nothing will be 614 * supported in this case; we do not need 615 * the firmware to know the CPU features. 616 */ 617 *val = (ptr[1] != 0) ? ptr[1] : cap[1]; 618 619 out: 620 if (buf.Pointer != NULL) 621 ACPI_FREE(buf.Pointer); 622 623 return rv; 624 } 625 626 static void 627 acpicpu_notify(ACPI_HANDLE hdl, uint32_t evt, void *aux) 628 { 629 ACPI_OSD_EXEC_CALLBACK func; 630 struct acpicpu_softc *sc; 631 device_t self = aux; 632 633 sc = device_private(self); 634 635 if (sc->sc_cold != false) 636 return; 637 638 if (acpicpu_dynamic != true) 639 return; 640 641 switch (evt) { 642 643 case ACPICPU_C_NOTIFY: 644 645 if ((sc->sc_flags & ACPICPU_FLAG_C) == 0) 646 return; 647 648 func = acpicpu_cstate_callback; 649 break; 650 651 case ACPICPU_P_NOTIFY: 652 653 if ((sc->sc_flags & ACPICPU_FLAG_P) == 0) 654 return; 655 656 func = acpicpu_pstate_callback; 657 break; 658 659 case ACPICPU_T_NOTIFY: 660 661 if ((sc->sc_flags & ACPICPU_FLAG_T) == 0) 662 return; 663 664 func = acpicpu_tstate_callback; 665 break; 666 667 default: 668 aprint_error_dev(sc->sc_dev, "unknown notify: 0x%02X\n", evt); 669 return; 670 } 671 672 (void)AcpiOsExecute(OSL_NOTIFY_HANDLER, func, sc->sc_dev); 673 } 674 675 static bool 676 acpicpu_suspend(device_t self, const pmf_qual_t *qual) 677 { 678 struct acpicpu_softc *sc = device_private(self); 679 680 if ((sc->sc_flags & ACPICPU_FLAG_C) != 0) 681 (void)acpicpu_cstate_suspend(self); 682 683 if ((sc->sc_flags & ACPICPU_FLAG_P) != 0) 684 (void)acpicpu_pstate_suspend(self); 685 686 if ((sc->sc_flags & ACPICPU_FLAG_T) != 0) 687 (void)acpicpu_tstate_suspend(self); 688 689 sc->sc_cold = true; 690 691 return true; 692 } 693 694 static bool 695 acpicpu_resume(device_t self, const pmf_qual_t *qual) 696 { 697 struct acpicpu_softc *sc = device_private(self); 698 static const int handler = OSL_NOTIFY_HANDLER; 699 700 sc->sc_cold = false; 701 702 if ((sc->sc_flags & ACPICPU_FLAG_C) != 0) 703 (void)AcpiOsExecute(handler, acpicpu_cstate_resume, self); 704 705 if ((sc->sc_flags & ACPICPU_FLAG_P) != 0) 706 (void)AcpiOsExecute(handler, acpicpu_pstate_resume, self); 707 708 if ((sc->sc_flags & ACPICPU_FLAG_T) != 0) 709 (void)AcpiOsExecute(handler, acpicpu_tstate_resume, self); 710 711 return true; 712 } 713 714 static void 715 acpicpu_evcnt_attach(device_t self) 716 { 717 struct acpicpu_softc *sc = device_private(self); 718 struct acpicpu_cstate *cs; 719 struct acpicpu_pstate *ps; 720 struct acpicpu_tstate *ts; 721 const char *str; 722 uint32_t i; 723 724 for (i = 0; i < __arraycount(sc->sc_cstate); i++) { 725 726 cs = &sc->sc_cstate[i]; 727 728 if (cs->cs_method == 0) 729 continue; 730 731 str = "HALT"; 732 733 if (cs->cs_method == ACPICPU_C_STATE_FFH) 734 str = "MWAIT"; 735 736 if (cs->cs_method == ACPICPU_C_STATE_SYSIO) 737 str = "I/O"; 738 739 (void)snprintf(cs->cs_name, sizeof(cs->cs_name), 740 "C%d (%s)", i, str); 741 742 evcnt_attach_dynamic(&cs->cs_evcnt, EVCNT_TYPE_MISC, 743 NULL, device_xname(sc->sc_dev), cs->cs_name); 744 } 745 746 for (i = 0; i < sc->sc_pstate_count; i++) { 747 748 ps = &sc->sc_pstate[i]; 749 750 if (ps->ps_freq == 0) 751 continue; 752 753 (void)snprintf(ps->ps_name, sizeof(ps->ps_name), 754 "P%u (%u MHz)", i, ps->ps_freq); 755 756 evcnt_attach_dynamic(&ps->ps_evcnt, EVCNT_TYPE_MISC, 757 NULL, device_xname(sc->sc_dev), ps->ps_name); 758 } 759 760 for (i = 0; i < sc->sc_tstate_count; i++) { 761 762 ts = &sc->sc_tstate[i]; 763 764 if (ts->ts_percent == 0) 765 continue; 766 767 (void)snprintf(ts->ts_name, sizeof(ts->ts_name), 768 "T%u (%u %%)", i, ts->ts_percent); 769 770 evcnt_attach_dynamic(&ts->ts_evcnt, EVCNT_TYPE_MISC, 771 NULL, device_xname(sc->sc_dev), ts->ts_name); 772 } 773 } 774 775 static void 776 acpicpu_evcnt_detach(device_t self) 777 { 778 struct acpicpu_softc *sc = device_private(self); 779 struct acpicpu_cstate *cs; 780 struct acpicpu_pstate *ps; 781 struct acpicpu_tstate *ts; 782 uint32_t i; 783 784 for (i = 0; i < __arraycount(sc->sc_cstate); i++) { 785 786 cs = &sc->sc_cstate[i]; 787 788 if (cs->cs_method != 0) 789 evcnt_detach(&cs->cs_evcnt); 790 } 791 792 for (i = 0; i < sc->sc_pstate_count; i++) { 793 794 ps = &sc->sc_pstate[i]; 795 796 if (ps->ps_freq != 0) 797 evcnt_detach(&ps->ps_evcnt); 798 } 799 800 for (i = 0; i < sc->sc_tstate_count; i++) { 801 802 ts = &sc->sc_tstate[i]; 803 804 if (ts->ts_percent != 0) 805 evcnt_detach(&ts->ts_evcnt); 806 } 807 } 808 809 static void 810 acpicpu_debug_print(device_t self) 811 { 812 struct acpicpu_softc *sc = device_private(self); 813 struct cpu_info *ci = sc->sc_ci; 814 struct acpicpu_cstate *cs; 815 struct acpicpu_pstate *ps; 816 struct acpicpu_tstate *ts; 817 static bool once = false; 818 struct acpicpu_dep *dep; 819 uint32_t i, method; 820 821 if (once != true) { 822 823 for (i = 0; i < __arraycount(sc->sc_cstate); i++) { 824 825 cs = &sc->sc_cstate[i]; 826 827 if (cs->cs_method == 0) 828 continue; 829 830 aprint_verbose_dev(sc->sc_dev, "C%d: %3s, " 831 "lat %3u us, pow %5u mW%s\n", i, 832 acpicpu_debug_print_method(cs->cs_method), 833 cs->cs_latency, cs->cs_power, 834 (cs->cs_flags != 0) ? ", bus master check" : ""); 835 } 836 837 method = sc->sc_pstate_control.reg_spaceid; 838 839 for (i = 0; i < sc->sc_pstate_count; i++) { 840 841 ps = &sc->sc_pstate[i]; 842 843 if (ps->ps_freq == 0) 844 continue; 845 846 aprint_verbose_dev(sc->sc_dev, "P%d: %3s, " 847 "lat %3u us, pow %5u mW, %4u MHz%s\n", i, 848 acpicpu_debug_print_method(method), 849 ps->ps_latency, ps->ps_power, ps->ps_freq, 850 (ps->ps_flags & ACPICPU_FLAG_P_TURBO) != 0 ? 851 ", turbo boost" : ""); 852 } 853 854 method = sc->sc_tstate_control.reg_spaceid; 855 856 for (i = 0; i < sc->sc_tstate_count; i++) { 857 858 ts = &sc->sc_tstate[i]; 859 860 if (ts->ts_percent == 0) 861 continue; 862 863 aprint_verbose_dev(sc->sc_dev, "T%u: %3s, " 864 "lat %3u us, pow %5u mW, %3u %%\n", i, 865 acpicpu_debug_print_method(method), 866 ts->ts_latency, ts->ts_power, ts->ts_percent); 867 } 868 869 once = true; 870 } 871 872 aprint_debug_dev(sc->sc_dev, "id %u, lapic id %u, " 873 "cap 0x%04x, flags 0x%08x\n", ci->ci_acpiid, 874 (uint32_t)ci->ci_cpuid, sc->sc_cap, sc->sc_flags); 875 876 if ((sc->sc_flags & ACPICPU_FLAG_C_DEP) != 0) { 877 878 dep = &sc->sc_cstate_dep; 879 880 aprint_debug_dev(sc->sc_dev, "C-state coordination: " 881 "%u CPUs, domain %u, type %s\n", dep->dep_ncpus, 882 dep->dep_domain, acpicpu_debug_print_dep(dep->dep_type)); 883 } 884 885 if ((sc->sc_flags & ACPICPU_FLAG_P_DEP) != 0) { 886 887 dep = &sc->sc_pstate_dep; 888 889 aprint_debug_dev(sc->sc_dev, "P-state coordination: " 890 "%u CPUs, domain %u, type %s\n", dep->dep_ncpus, 891 dep->dep_domain, acpicpu_debug_print_dep(dep->dep_type)); 892 } 893 894 if ((sc->sc_flags & ACPICPU_FLAG_T_DEP) != 0) { 895 896 dep = &sc->sc_tstate_dep; 897 898 aprint_debug_dev(sc->sc_dev, "T-state coordination: " 899 "%u CPUs, domain %u, type %s\n", dep->dep_ncpus, 900 dep->dep_domain, acpicpu_debug_print_dep(dep->dep_type)); 901 } 902 } 903 904 static const char * 905 acpicpu_debug_print_method(uint8_t val) 906 { 907 908 switch (val) { 909 910 case ACPICPU_C_STATE_HALT: 911 return "HLT"; 912 913 case ACPICPU_C_STATE_FFH: 914 case ACPI_ADR_SPACE_FIXED_HARDWARE: 915 return "FFH"; 916 917 case ACPICPU_C_STATE_SYSIO: /* ACPI_ADR_SPACE_SYSTEM_IO */ 918 return "I/O"; 919 920 default: 921 return "???"; 922 } 923 } 924 925 static const char * 926 acpicpu_debug_print_dep(uint32_t val) 927 { 928 929 switch (val) { 930 931 case ACPICPU_DEP_SW_ALL: 932 return "SW_ALL"; 933 934 case ACPICPU_DEP_SW_ANY: 935 return "SW_ANY"; 936 937 case ACPICPU_DEP_HW_ALL: 938 return "HW_ALL"; 939 940 default: 941 return "unknown"; 942 } 943 } 944 945 MODULE(MODULE_CLASS_DRIVER, acpicpu, NULL); 946 947 #ifdef _MODULE 948 #include "ioconf.c" 949 #endif 950 951 static int 952 acpicpu_modcmd(modcmd_t cmd, void *aux) 953 { 954 int rv = 0; 955 956 switch (cmd) { 957 958 case MODULE_CMD_INIT: 959 960 #ifdef _MODULE 961 rv = config_init_component(cfdriver_ioconf_acpicpu, 962 cfattach_ioconf_acpicpu, cfdata_ioconf_acpicpu); 963 #endif 964 break; 965 966 case MODULE_CMD_FINI: 967 968 #ifdef _MODULE 969 rv = config_fini_component(cfdriver_ioconf_acpicpu, 970 cfattach_ioconf_acpicpu, cfdata_ioconf_acpicpu); 971 #endif 972 break; 973 974 default: 975 rv = ENOTTY; 976 } 977 978 return rv; 979 } 980
Indexes created Thu Sep 25 02:09:54 GMT 2025