acpi_cpu.c revision 1.48.4.1
1 /* $NetBSD: acpi_cpu.c,v 1.48.4.1 2012/04/05 21:33:25 mrg 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 1.48.4.1 2012/04/05 21:33:25 mrg 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 #include <sys/cpufreq.h> 41 42 #include <dev/acpi/acpireg.h> 43 #include <dev/acpi/acpivar.h> 44 #include <dev/acpi/acpi_cpu.h> 45 46 #include <machine/acpi_machdep.h> 47 #include <machine/cpuvar.h> 48 49 #define _COMPONENT ACPI_BUS_COMPONENT 50 ACPI_MODULE_NAME ("acpi_cpu") 51 52 static int acpicpu_match(device_t, cfdata_t, void *); 53 static void acpicpu_attach(device_t, device_t, void *); 54 static int acpicpu_detach(device_t, int); 55 static int acpicpu_once_attach(void); 56 static int acpicpu_once_detach(void); 57 static void acpicpu_start(device_t); 58 static void acpicpu_sysctl(device_t); 59 60 static ACPI_STATUS acpicpu_object(ACPI_HANDLE, struct acpicpu_object *); 61 static uint32_t acpicpu_cap(struct acpicpu_softc *); 62 static ACPI_STATUS acpicpu_cap_osc(struct acpicpu_softc *, 63 uint32_t, uint32_t *); 64 static void acpicpu_notify(ACPI_HANDLE, uint32_t, void *); 65 static bool acpicpu_suspend(device_t, const pmf_qual_t *); 66 static bool acpicpu_resume(device_t, const pmf_qual_t *); 67 static void acpicpu_evcnt_attach(device_t); 68 static void acpicpu_evcnt_detach(device_t); 69 static void acpicpu_debug_print(device_t); 70 static const char *acpicpu_debug_print_method_c(uint8_t); 71 static const char *acpicpu_debug_print_method_pt(uint8_t); 72 static const char *acpicpu_debug_print_dep(uint32_t); 73 74 static uint32_t acpicpu_count = 0; 75 struct acpicpu_softc **acpicpu_sc = NULL; 76 static struct sysctllog *acpicpu_log = NULL; 77 static bool acpicpu_dynamic = true; 78 static bool acpicpu_passive = true; 79 80 static const struct { 81 const char *manu; 82 const char *prod; 83 const char *vers; 84 } acpicpu_quirks[] = { 85 { "Supermicro", "PDSMi-LN4", "0123456789" }, 86 { "ASUSTeK Computer INC.", "M2A-MX", "Rev 1.xx" }, 87 }; 88 89 CFATTACH_DECL_NEW(acpicpu, sizeof(struct acpicpu_softc), 90 acpicpu_match, acpicpu_attach, acpicpu_detach, NULL); 91 92 static int 93 acpicpu_match(device_t parent, cfdata_t match, void *aux) 94 { 95 const char *manu, *prod, *vers; 96 struct cpu_info *ci; 97 size_t i; 98 99 if (acpi_softc == NULL) 100 return 0; 101 102 manu = pmf_get_platform("board-vendor"); 103 prod = pmf_get_platform("board-product"); 104 vers = pmf_get_platform("board-version"); 105 106 if (manu != NULL && prod != NULL && vers != NULL) { 107 108 for (i = 0; i < __arraycount(acpicpu_quirks); i++) { 109 110 if (strcasecmp(acpicpu_quirks[i].manu, manu) == 0 && 111 strcasecmp(acpicpu_quirks[i].prod, prod) == 0 && 112 strcasecmp(acpicpu_quirks[i].vers, vers) == 0) 113 return 0; 114 } 115 } 116 117 ci = acpicpu_md_match(parent, match, aux); 118 119 if (ci == NULL) 120 return 0; 121 122 if (acpi_match_cpu_info(ci) == NULL) 123 return 0; 124 125 return 10; 126 } 127 128 static void 129 acpicpu_attach(device_t parent, device_t self, void *aux) 130 { 131 struct acpicpu_softc *sc = device_private(self); 132 struct cpu_info *ci; 133 ACPI_HANDLE hdl; 134 cpuid_t id; 135 int rv; 136 137 ci = acpicpu_md_attach(parent, self, aux); 138 139 if (ci == NULL) 140 return; 141 142 sc->sc_ci = ci; 143 sc->sc_dev = self; 144 sc->sc_cold = true; 145 146 hdl = acpi_match_cpu_info(ci); 147 148 if (hdl == NULL) { 149 aprint_normal(": failed to match processor\n"); 150 return; 151 } 152 153 sc->sc_node = acpi_match_node(hdl); 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 mutex_init(&sc->sc_mtx, MUTEX_DEFAULT, IPL_NONE); 191 192 acpicpu_cstate_attach(self); 193 acpicpu_pstate_attach(self); 194 acpicpu_tstate_attach(self); 195 196 acpicpu_debug_print(self); 197 acpicpu_evcnt_attach(self); 198 199 (void)config_interrupts(self, acpicpu_start); 200 (void)acpi_register_notify(sc->sc_node, acpicpu_notify); 201 (void)pmf_device_register(self, acpicpu_suspend, acpicpu_resume); 202 } 203 204 static int 205 acpicpu_detach(device_t self, int flags) 206 { 207 struct acpicpu_softc *sc = device_private(self); 208 209 sc->sc_cold = true; 210 211 acpicpu_evcnt_detach(self); 212 acpi_deregister_notify(sc->sc_node); 213 214 acpicpu_cstate_detach(self); 215 acpicpu_pstate_detach(self); 216 acpicpu_tstate_detach(self); 217 218 mutex_destroy(&sc->sc_mtx); 219 sc->sc_node->ad_device = NULL; 220 221 acpicpu_count--; 222 acpicpu_once_detach(); 223 224 return 0; 225 } 226 227 static int 228 acpicpu_once_attach(void) 229 { 230 struct acpicpu_softc *sc; 231 unsigned int i; 232 233 if (acpicpu_count != 0) 234 return 0; 235 236 KASSERT(acpicpu_sc == NULL); 237 KASSERT(acpicpu_log == NULL); 238 239 acpicpu_sc = kmem_zalloc(maxcpus * sizeof(*sc), KM_SLEEP); 240 241 if (acpicpu_sc == NULL) 242 return ENOMEM; 243 244 for (i = 0; i < maxcpus; i++) 245 acpicpu_sc[i] = NULL; 246 247 return 0; 248 } 249 250 static int 251 acpicpu_once_detach(void) 252 { 253 struct acpicpu_softc *sc; 254 255 if (acpicpu_count != 0) 256 return EDEADLK; 257 258 cpufreq_deregister(); 259 260 if (acpicpu_log != NULL) 261 sysctl_teardown(&acpicpu_log); 262 263 if (acpicpu_sc != NULL) 264 kmem_free(acpicpu_sc, maxcpus * sizeof(*sc)); 265 266 return 0; 267 } 268 269 static void 270 acpicpu_start(device_t self) 271 { 272 struct acpicpu_softc *sc = device_private(self); 273 static uint32_t count = 0; 274 struct cpufreq cf; 275 uint32_t i; 276 277 /* 278 * Run the state-specific initialization routines. These 279 * must run only once, after interrupts have been enabled, 280 * all CPUs are running, and all ACPI CPUs have attached. 281 */ 282 if (++count != acpicpu_count || acpicpu_count != sc->sc_ncpus) { 283 sc->sc_cold = false; 284 return; 285 } 286 287 /* 288 * Set the last ACPI CPU as non-cold 289 * only after C-states are enabled. 290 */ 291 if ((sc->sc_flags & ACPICPU_FLAG_C) != 0) 292 acpicpu_cstate_start(self); 293 294 sc->sc_cold = false; 295 296 if ((sc->sc_flags & ACPICPU_FLAG_P) != 0) 297 acpicpu_pstate_start(self); 298 299 if ((sc->sc_flags & ACPICPU_FLAG_T) != 0) 300 acpicpu_tstate_start(self); 301 302 acpicpu_sysctl(self); 303 aprint_debug_dev(self, "ACPI CPUs started\n"); 304 305 /* 306 * Register with cpufreq(9). 307 */ 308 if ((sc->sc_flags & ACPICPU_FLAG_P) != 0) { 309 310 (void)memset(&cf, 0, sizeof(struct cpufreq)); 311 312 cf.cf_mp = false; 313 cf.cf_cookie = NULL; 314 cf.cf_get_freq = acpicpu_pstate_get; 315 cf.cf_set_freq = acpicpu_pstate_set; 316 cf.cf_state_count = sc->sc_pstate_count; 317 318 (void)strlcpy(cf.cf_name, "acpicpu", sizeof(cf.cf_name)); 319 320 for (i = 0; i < sc->sc_pstate_count; i++) { 321 322 if (sc->sc_pstate[i].ps_freq == 0) 323 continue; 324 325 cf.cf_state[i].cfs_freq = sc->sc_pstate[i].ps_freq; 326 cf.cf_state[i].cfs_power = sc->sc_pstate[i].ps_power; 327 } 328 329 if (cpufreq_register(&cf) != 0) 330 aprint_error_dev(self, "failed to register cpufreq\n"); 331 } 332 } 333 334 static void 335 acpicpu_sysctl(device_t self) 336 { 337 const struct sysctlnode *node; 338 int err; 339 340 KASSERT(acpicpu_log == NULL); 341 342 err = sysctl_createv(&acpicpu_log, 0, NULL, &node, 343 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", NULL, 344 NULL, 0, NULL, 0, CTL_HW, CTL_EOL); 345 346 if (err != 0) 347 goto fail; 348 349 err = sysctl_createv(&acpicpu_log, 0, &node, &node, 350 CTLFLAG_PERMANENT, CTLTYPE_NODE, "acpi", NULL, 351 NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL); 352 353 if (err != 0) 354 goto fail; 355 356 err = sysctl_createv(&acpicpu_log, 0, &node, &node, 357 0, CTLTYPE_NODE, "cpu", SYSCTL_DESCR("ACPI CPU"), 358 NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL); 359 360 if (err != 0) 361 goto fail; 362 363 err = sysctl_createv(&acpicpu_log, 0, &node, NULL, 364 CTLFLAG_READWRITE, CTLTYPE_BOOL, "dynamic", 365 SYSCTL_DESCR("Dynamic states"), NULL, 0, 366 &acpicpu_dynamic, 0, CTL_CREATE, CTL_EOL); 367 368 if (err != 0) 369 goto fail; 370 371 err = sysctl_createv(&acpicpu_log, 0, &node, NULL, 372 CTLFLAG_READWRITE, CTLTYPE_BOOL, "passive", 373 SYSCTL_DESCR("Passive cooling"), NULL, 0, 374 &acpicpu_passive, 0, CTL_CREATE, CTL_EOL); 375 376 if (err != 0) 377 goto fail; 378 379 return; 380 381 fail: 382 aprint_error_dev(self, "failed to initialize sysctl (err %d)\n", err); 383 } 384 385 static ACPI_STATUS 386 acpicpu_object(ACPI_HANDLE hdl, struct acpicpu_object *ao) 387 { 388 ACPI_OBJECT *obj; 389 ACPI_BUFFER buf; 390 ACPI_STATUS rv; 391 392 rv = acpi_eval_struct(hdl, NULL, &buf); 393 394 if (ACPI_FAILURE(rv)) 395 goto out; 396 397 obj = buf.Pointer; 398 399 if (obj->Type != ACPI_TYPE_PROCESSOR) { 400 rv = AE_TYPE; 401 goto out; 402 } 403 404 if (obj->Processor.ProcId > (uint32_t)maxcpus) { 405 rv = AE_LIMIT; 406 goto out; 407 } 408 409 KDASSERT((uint64_t)obj->Processor.PblkAddress < UINT32_MAX); 410 411 if (ao != NULL) { 412 ao->ao_procid = obj->Processor.ProcId; 413 ao->ao_pblklen = obj->Processor.PblkLength; 414 ao->ao_pblkaddr = obj->Processor.PblkAddress; 415 } 416 417 out: 418 if (buf.Pointer != NULL) 419 ACPI_FREE(buf.Pointer); 420 421 return rv; 422 } 423 424 static uint32_t 425 acpicpu_cap(struct acpicpu_softc *sc) 426 { 427 uint32_t flags, cap = 0; 428 ACPI_STATUS rv; 429 430 /* 431 * Query and set machine-dependent capabilities. 432 * Note that the Intel-specific _PDC method has 433 * already been evaluated. It was furthermore 434 * deprecated in the ACPI 3.0 in favor of _OSC. 435 */ 436 flags = acpi_md_pdc(); 437 rv = acpicpu_cap_osc(sc, flags, &cap); 438 439 if (ACPI_FAILURE(rv) && rv != AE_NOT_FOUND) { 440 441 aprint_error_dev(sc->sc_dev, "failed to evaluate " 442 "_OSC: %s\n", AcpiFormatException(rv)); 443 } 444 445 return (cap != 0) ? cap : flags; 446 } 447 448 static ACPI_STATUS 449 acpicpu_cap_osc(struct acpicpu_softc *sc, uint32_t flags, uint32_t *val) 450 { 451 ACPI_OBJECT_LIST arg; 452 ACPI_OBJECT obj[4]; 453 ACPI_OBJECT *osc; 454 ACPI_BUFFER buf; 455 ACPI_STATUS rv; 456 uint32_t cap[2]; 457 uint32_t *ptr; 458 int i = 5; 459 460 static uint8_t intel_uuid[16] = { 461 0x16, 0xA6, 0x77, 0x40, 0x0C, 0x29, 0xBE, 0x47, 462 0x9E, 0xBD, 0xD8, 0x70, 0x58, 0x71, 0x39, 0x53 463 }; 464 465 cap[0] = ACPI_OSC_QUERY; 466 cap[1] = flags; 467 468 again: 469 arg.Count = 4; 470 arg.Pointer = obj; 471 472 obj[0].Type = ACPI_TYPE_BUFFER; 473 obj[0].Buffer.Length = sizeof(intel_uuid); 474 obj[0].Buffer.Pointer = intel_uuid; 475 476 obj[1].Type = ACPI_TYPE_INTEGER; 477 obj[1].Integer.Value = ACPICPU_PDC_REVID; 478 479 obj[2].Type = ACPI_TYPE_INTEGER; 480 obj[2].Integer.Value = __arraycount(cap); 481 482 obj[3].Type = ACPI_TYPE_BUFFER; 483 obj[3].Buffer.Length = sizeof(cap); 484 obj[3].Buffer.Pointer = (void *)cap; 485 486 buf.Pointer = NULL; 487 buf.Length = ACPI_ALLOCATE_LOCAL_BUFFER; 488 489 rv = AcpiEvaluateObject(sc->sc_node->ad_handle, "_OSC", &arg, &buf); 490 491 if (ACPI_FAILURE(rv)) 492 goto out; 493 494 osc = buf.Pointer; 495 496 if (osc->Type != ACPI_TYPE_BUFFER) { 497 rv = AE_TYPE; 498 goto out; 499 } 500 501 if (osc->Buffer.Length != sizeof(cap)) { 502 rv = AE_BUFFER_OVERFLOW; 503 goto out; 504 } 505 506 ptr = (uint32_t *)osc->Buffer.Pointer; 507 508 if ((ptr[0] & ACPI_OSC_ERROR) != 0) { 509 rv = AE_ERROR; 510 goto out; 511 } 512 513 if ((ptr[0] & (ACPI_OSC_ERROR_REV | ACPI_OSC_ERROR_UUID)) != 0) { 514 rv = AE_BAD_PARAMETER; 515 goto out; 516 } 517 518 /* 519 * "It is strongly recommended that the OS evaluate 520 * _OSC with the Query Support Flag set until _OSC 521 * returns the Capabilities Masked bit clear, to 522 * negotiate the set of features to be granted to 523 * the OS for native support (ACPI 4.0, 6.2.10)." 524 */ 525 if ((ptr[0] & ACPI_OSC_ERROR_MASKED) != 0 && i >= 0) { 526 527 ACPI_FREE(buf.Pointer); 528 i--; 529 530 goto again; 531 } 532 533 if ((cap[0] & ACPI_OSC_QUERY) != 0) { 534 535 ACPI_FREE(buf.Pointer); 536 cap[0] &= ~ACPI_OSC_QUERY; 537 538 goto again; 539 } 540 541 /* 542 * It is permitted for _OSC to return all 543 * bits cleared, but this is specified to 544 * vary on per-device basis. Assume that 545 * everything rather than nothing will be 546 * supported in this case; we do not need 547 * the firmware to know the CPU features. 548 */ 549 *val = (ptr[1] != 0) ? ptr[1] : cap[1]; 550 551 out: 552 if (buf.Pointer != NULL) 553 ACPI_FREE(buf.Pointer); 554 555 return rv; 556 } 557 558 static void 559 acpicpu_notify(ACPI_HANDLE hdl, uint32_t evt, void *aux) 560 { 561 ACPI_OSD_EXEC_CALLBACK func; 562 struct acpicpu_softc *sc; 563 device_t self = aux; 564 565 sc = device_private(self); 566 567 if (sc->sc_cold != false) 568 return; 569 570 if (acpicpu_dynamic != true) 571 return; 572 573 switch (evt) { 574 575 case ACPICPU_C_NOTIFY: 576 577 if ((sc->sc_flags & ACPICPU_FLAG_C) == 0) 578 return; 579 580 func = acpicpu_cstate_callback; 581 break; 582 583 case ACPICPU_P_NOTIFY: 584 585 if ((sc->sc_flags & ACPICPU_FLAG_P) == 0) 586 return; 587 588 func = acpicpu_pstate_callback; 589 break; 590 591 case ACPICPU_T_NOTIFY: 592 593 if ((sc->sc_flags & ACPICPU_FLAG_T) == 0) 594 return; 595 596 func = acpicpu_tstate_callback; 597 break; 598 599 default: 600 aprint_error_dev(sc->sc_dev, "unknown notify: 0x%02X\n", evt); 601 return; 602 } 603 604 (void)AcpiOsExecute(OSL_NOTIFY_HANDLER, func, sc->sc_dev); 605 } 606 607 static bool 608 acpicpu_suspend(device_t self, const pmf_qual_t *qual) 609 { 610 struct acpicpu_softc *sc = device_private(self); 611 612 if ((sc->sc_flags & ACPICPU_FLAG_C) != 0) 613 (void)acpicpu_cstate_suspend(self); 614 615 if ((sc->sc_flags & ACPICPU_FLAG_P) != 0) 616 (void)acpicpu_pstate_suspend(self); 617 618 if ((sc->sc_flags & ACPICPU_FLAG_T) != 0) 619 (void)acpicpu_tstate_suspend(self); 620 621 sc->sc_cold = true; 622 623 return true; 624 } 625 626 static bool 627 acpicpu_resume(device_t self, const pmf_qual_t *qual) 628 { 629 struct acpicpu_softc *sc = device_private(self); 630 static const int handler = OSL_NOTIFY_HANDLER; 631 632 sc->sc_cold = false; 633 634 if ((sc->sc_flags & ACPICPU_FLAG_C) != 0) 635 (void)AcpiOsExecute(handler, acpicpu_cstate_resume, self); 636 637 if ((sc->sc_flags & ACPICPU_FLAG_P) != 0) 638 (void)AcpiOsExecute(handler, acpicpu_pstate_resume, self); 639 640 if ((sc->sc_flags & ACPICPU_FLAG_T) != 0) 641 (void)AcpiOsExecute(handler, acpicpu_tstate_resume, self); 642 643 return true; 644 } 645 646 static void 647 acpicpu_evcnt_attach(device_t self) 648 { 649 struct acpicpu_softc *sc = device_private(self); 650 struct acpicpu_cstate *cs; 651 struct acpicpu_pstate *ps; 652 struct acpicpu_tstate *ts; 653 const char *str; 654 uint32_t i; 655 656 for (i = 0; i < __arraycount(sc->sc_cstate); i++) { 657 658 cs = &sc->sc_cstate[i]; 659 660 if (cs->cs_method == 0) 661 continue; 662 663 str = "HALT"; 664 665 if (cs->cs_method == ACPICPU_C_STATE_FFH) 666 str = "MWAIT"; 667 668 if (cs->cs_method == ACPICPU_C_STATE_SYSIO) 669 str = "I/O"; 670 671 (void)snprintf(cs->cs_name, sizeof(cs->cs_name), 672 "C%d (%s)", i, str); 673 674 evcnt_attach_dynamic(&cs->cs_evcnt, EVCNT_TYPE_MISC, 675 NULL, device_xname(sc->sc_dev), cs->cs_name); 676 } 677 678 for (i = 0; i < sc->sc_pstate_count; i++) { 679 680 ps = &sc->sc_pstate[i]; 681 682 if (ps->ps_freq == 0) 683 continue; 684 685 (void)snprintf(ps->ps_name, sizeof(ps->ps_name), 686 "P%u (%u MHz)", i, ps->ps_freq); 687 688 evcnt_attach_dynamic(&ps->ps_evcnt, EVCNT_TYPE_MISC, 689 NULL, device_xname(sc->sc_dev), ps->ps_name); 690 } 691 692 for (i = 0; i < sc->sc_tstate_count; i++) { 693 694 ts = &sc->sc_tstate[i]; 695 696 if (ts->ts_percent == 0) 697 continue; 698 699 (void)snprintf(ts->ts_name, sizeof(ts->ts_name), 700 "T%u (%u %%)", i, ts->ts_percent); 701 702 evcnt_attach_dynamic(&ts->ts_evcnt, EVCNT_TYPE_MISC, 703 NULL, device_xname(sc->sc_dev), ts->ts_name); 704 } 705 } 706 707 static void 708 acpicpu_evcnt_detach(device_t self) 709 { 710 struct acpicpu_softc *sc = device_private(self); 711 struct acpicpu_cstate *cs; 712 struct acpicpu_pstate *ps; 713 struct acpicpu_tstate *ts; 714 uint32_t i; 715 716 for (i = 0; i < __arraycount(sc->sc_cstate); i++) { 717 718 cs = &sc->sc_cstate[i]; 719 720 if (cs->cs_method != 0) 721 evcnt_detach(&cs->cs_evcnt); 722 } 723 724 for (i = 0; i < sc->sc_pstate_count; i++) { 725 726 ps = &sc->sc_pstate[i]; 727 728 if (ps->ps_freq != 0) 729 evcnt_detach(&ps->ps_evcnt); 730 } 731 732 for (i = 0; i < sc->sc_tstate_count; i++) { 733 734 ts = &sc->sc_tstate[i]; 735 736 if (ts->ts_percent != 0) 737 evcnt_detach(&ts->ts_evcnt); 738 } 739 } 740 741 static void 742 acpicpu_debug_print(device_t self) 743 { 744 struct acpicpu_softc *sc = device_private(self); 745 struct cpu_info *ci = sc->sc_ci; 746 struct acpicpu_cstate *cs; 747 struct acpicpu_pstate *ps; 748 struct acpicpu_tstate *ts; 749 static bool once = false; 750 struct acpicpu_dep *dep; 751 uint32_t i, method; 752 753 if (once != true) { 754 755 for (i = 0; i < __arraycount(sc->sc_cstate); i++) { 756 757 cs = &sc->sc_cstate[i]; 758 759 if (cs->cs_method == 0) 760 continue; 761 762 aprint_verbose_dev(sc->sc_dev, "C%d: %3s, " 763 "lat %3u us, pow %5u mW%s\n", i, 764 acpicpu_debug_print_method_c(cs->cs_method), 765 cs->cs_latency, cs->cs_power, 766 (cs->cs_flags != 0) ? ", bus master check" : ""); 767 } 768 769 method = sc->sc_pstate_control.reg_spaceid; 770 771 for (i = 0; i < sc->sc_pstate_count; i++) { 772 773 ps = &sc->sc_pstate[i]; 774 775 if (ps->ps_freq == 0) 776 continue; 777 778 aprint_verbose_dev(sc->sc_dev, "P%d: %3s, " 779 "lat %3u us, pow %5u mW, %4u MHz%s\n", i, 780 acpicpu_debug_print_method_pt(method), 781 ps->ps_latency, ps->ps_power, ps->ps_freq, 782 (ps->ps_flags & ACPICPU_FLAG_P_TURBO) != 0 ? 783 ", turbo boost" : ""); 784 } 785 786 method = sc->sc_tstate_control.reg_spaceid; 787 788 for (i = 0; i < sc->sc_tstate_count; i++) { 789 790 ts = &sc->sc_tstate[i]; 791 792 if (ts->ts_percent == 0) 793 continue; 794 795 aprint_verbose_dev(sc->sc_dev, "T%u: %3s, " 796 "lat %3u us, pow %5u mW, %3u %%\n", i, 797 acpicpu_debug_print_method_pt(method), 798 ts->ts_latency, ts->ts_power, ts->ts_percent); 799 } 800 801 once = true; 802 } 803 804 aprint_debug_dev(sc->sc_dev, "id %u, lapic id %u, " 805 "cap 0x%04x, flags 0x%08x\n", ci->ci_acpiid, 806 (uint32_t)ci->ci_cpuid, sc->sc_cap, sc->sc_flags); 807 808 if ((sc->sc_flags & ACPICPU_FLAG_C_DEP) != 0) { 809 810 dep = &sc->sc_cstate_dep; 811 812 aprint_debug_dev(sc->sc_dev, "C-state coordination: " 813 "%u CPUs, domain %u, type %s\n", dep->dep_ncpus, 814 dep->dep_domain, acpicpu_debug_print_dep(dep->dep_type)); 815 } 816 817 if ((sc->sc_flags & ACPICPU_FLAG_P_DEP) != 0) { 818 819 dep = &sc->sc_pstate_dep; 820 821 aprint_debug_dev(sc->sc_dev, "P-state coordination: " 822 "%u CPUs, domain %u, type %s\n", dep->dep_ncpus, 823 dep->dep_domain, acpicpu_debug_print_dep(dep->dep_type)); 824 } 825 826 if ((sc->sc_flags & ACPICPU_FLAG_T_DEP) != 0) { 827 828 dep = &sc->sc_tstate_dep; 829 830 aprint_debug_dev(sc->sc_dev, "T-state coordination: " 831 "%u CPUs, domain %u, type %s\n", dep->dep_ncpus, 832 dep->dep_domain, acpicpu_debug_print_dep(dep->dep_type)); 833 } 834 } 835 836 static const char * 837 acpicpu_debug_print_method_c(uint8_t val) 838 { 839 840 if (val == ACPICPU_C_STATE_FFH) 841 return "FFH"; 842 843 if (val == ACPICPU_C_STATE_HALT) 844 return "HLT"; 845 846 if (val == ACPICPU_C_STATE_SYSIO) 847 return "I/O"; 848 849 return "???"; 850 } 851 852 static const char * 853 acpicpu_debug_print_method_pt(uint8_t val) 854 { 855 856 if (val == ACPI_ADR_SPACE_SYSTEM_IO) 857 return "I/O"; 858 859 if (val == ACPI_ADR_SPACE_FIXED_HARDWARE) 860 return "FFH"; 861 862 return "???"; 863 } 864 865 static const char * 866 acpicpu_debug_print_dep(uint32_t val) 867 { 868 869 switch (val) { 870 871 case ACPICPU_DEP_SW_ALL: 872 return "SW_ALL"; 873 874 case ACPICPU_DEP_SW_ANY: 875 return "SW_ANY"; 876 877 case ACPICPU_DEP_HW_ALL: 878 return "HW_ALL"; 879 880 default: 881 return "unknown"; 882 } 883 } 884 885 MODULE(MODULE_CLASS_DRIVER, acpicpu, NULL); 886 887 #ifdef _MODULE 888 #include "ioconf.c" 889 #endif 890 891 static int 892 acpicpu_modcmd(modcmd_t cmd, void *aux) 893 { 894 int rv = 0; 895 896 switch (cmd) { 897 898 case MODULE_CMD_INIT: 899 900 #ifdef _MODULE 901 rv = config_init_component(cfdriver_ioconf_acpicpu, 902 cfattach_ioconf_acpicpu, cfdata_ioconf_acpicpu); 903 #endif 904 break; 905 906 case MODULE_CMD_FINI: 907 908 #ifdef _MODULE 909 rv = config_fini_component(cfdriver_ioconf_acpicpu, 910 cfattach_ioconf_acpicpu, cfdata_ioconf_acpicpu); 911 #endif 912 break; 913 914 default: 915 rv = ENOTTY; 916 } 917 918 return rv; 919 } 920
Indexes created Wed Oct 01 19:09:53 GMT 2025