1 /* $NetBSD: acpi_cpu.c,v 1.48 2011/11/14 02:44:59 jmcneill Exp $ */ 2 3 /*- 4 * Copyright (c) 2010, 2011 Jukka Ruohonen <jruohonen@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 2011/11/14 02:44:59 jmcneill 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 }; 87 88 CFATTACH_DECL_NEW(acpicpu, sizeof(struct acpicpu_softc), 89 acpicpu_match, acpicpu_attach, acpicpu_detach, NULL); 90 91 static int 92 acpicpu_match(device_t parent, cfdata_t match, void *aux) 93 { 94 const char *manu, *prod, *vers; 95 struct cpu_info *ci; 96 size_t i; 97 98 if (acpi_softc == NULL) 99 return 0; 100 101 manu = pmf_get_platform("system-vendor"); 102 prod = pmf_get_platform("system-product"); 103 vers = pmf_get_platform("system-version"); 104 105 if (manu != NULL && prod != NULL && vers != NULL) { 106 107 for (i = 0; i < __arraycount(acpicpu_quirks); i++) { 108 109 if (strcasecmp(acpicpu_quirks[i].manu, manu) == 0 && 110 strcasecmp(acpicpu_quirks[i].prod, prod) == 0 && 111 strcasecmp(acpicpu_quirks[i].vers, vers) == 0) 112 return 0; 113 } 114 } 115 116 ci = acpicpu_md_match(parent, match, aux); 117 118 if (ci == NULL) 119 return 0; 120 121 if (acpi_match_cpu_info(ci) == NULL) 122 return 0; 123 124 return 10; 125 } 126 127 static void 128 acpicpu_attach(device_t parent, device_t self, void *aux) 129 { 130 struct acpicpu_softc *sc = device_private(self); 131 struct cpu_info *ci; 132 ACPI_HANDLE hdl; 133 cpuid_t id; 134 int rv; 135 136 ci = acpicpu_md_attach(parent, self, aux); 137 138 if (ci == NULL) 139 return; 140 141 sc->sc_ci = ci; 142 sc->sc_dev = self; 143 sc->sc_cold = true; 144 145 hdl = acpi_match_cpu_info(ci); 146 147 if (hdl == NULL) { 148 aprint_normal(": failed to match processor\n"); 149 return; 150 } 151 152 sc->sc_node = acpi_match_node(hdl); 153 154 if (acpicpu_once_attach() != 0) { 155 aprint_normal(": failed to initialize\n"); 156 return; 157 } 158 159 KASSERT(acpi_softc != NULL); 160 KASSERT(acpicpu_sc != NULL); 161 KASSERT(sc->sc_node != NULL); 162 163 id = sc->sc_ci->ci_acpiid; 164 165 if (acpicpu_sc[id] != NULL) { 166 aprint_normal(": already attached\n"); 167 return; 168 } 169 170 aprint_naive("\n"); 171 aprint_normal(": ACPI CPU\n"); 172 173 rv = acpicpu_object(sc->sc_node->ad_handle, &sc->sc_object); 174 175 if (ACPI_FAILURE(rv)) 176 aprint_verbose_dev(self, "failed to obtain CPU object\n"); 177 178 acpicpu_count++; 179 acpicpu_sc[id] = sc; 180 181 sc->sc_cap = acpicpu_cap(sc); 182 sc->sc_ncpus = acpi_md_ncpus(); 183 sc->sc_flags = acpicpu_md_flags(); 184 185 KASSERT(acpicpu_count <= sc->sc_ncpus); 186 KASSERT(sc->sc_node->ad_device == NULL); 187 188 sc->sc_node->ad_device = self; 189 mutex_init(&sc->sc_mtx, MUTEX_DEFAULT, IPL_NONE); 190 191 acpicpu_cstate_attach(self); 192 acpicpu_pstate_attach(self); 193 acpicpu_tstate_attach(self); 194 195 acpicpu_debug_print(self); 196 acpicpu_evcnt_attach(self); 197 198 (void)config_interrupts(self, acpicpu_start); 199 (void)acpi_register_notify(sc->sc_node, acpicpu_notify); 200 (void)pmf_device_register(self, acpicpu_suspend, acpicpu_resume); 201 } 202 203 static int 204 acpicpu_detach(device_t self, int flags) 205 { 206 struct acpicpu_softc *sc = device_private(self); 207 208 sc->sc_cold = true; 209 210 acpicpu_evcnt_detach(self); 211 acpi_deregister_notify(sc->sc_node); 212 213 acpicpu_cstate_detach(self); 214 acpicpu_pstate_detach(self); 215 acpicpu_tstate_detach(self); 216 217 mutex_destroy(&sc->sc_mtx); 218 sc->sc_node->ad_device = NULL; 219 220 acpicpu_count--; 221 acpicpu_once_detach(); 222 223 return 0; 224 } 225 226 static int 227 acpicpu_once_attach(void) 228 { 229 struct acpicpu_softc *sc; 230 unsigned int i; 231 232 if (acpicpu_count != 0) 233 return 0; 234 235 KASSERT(acpicpu_sc == NULL); 236 KASSERT(acpicpu_log == NULL); 237 238 acpicpu_sc = kmem_zalloc(maxcpus * sizeof(*sc), KM_SLEEP); 239 240 if (acpicpu_sc == NULL) 241 return ENOMEM; 242 243 for (i = 0; i < maxcpus; i++) 244 acpicpu_sc[i] = NULL; 245 246 return 0; 247 } 248 249 static int 250 acpicpu_once_detach(void) 251 { 252 struct acpicpu_softc *sc; 253 254 if (acpicpu_count != 0) 255 return EDEADLK; 256 257 cpufreq_deregister(); 258 259 if (acpicpu_log != NULL) 260 sysctl_teardown(&acpicpu_log); 261 262 if (acpicpu_sc != NULL) 263 kmem_free(acpicpu_sc, maxcpus * sizeof(*sc)); 264 265 return 0; 266 } 267 268 static void 269 acpicpu_start(device_t self) 270 { 271 struct acpicpu_softc *sc = device_private(self); 272 static uint32_t count = 0; 273 struct cpufreq cf; 274 uint32_t i; 275 276 /* 277 * Run the state-specific initialization routines. These 278 * must run only once, after interrupts have been enabled, 279 * all CPUs are running, and all ACPI CPUs have attached. 280 */ 281 if (++count != acpicpu_count || acpicpu_count != sc->sc_ncpus) { 282 sc->sc_cold = false; 283 return; 284 } 285 286 /* 287 * Set the last ACPI CPU as non-cold 288 * only after C-states are enabled. 289 */ 290 if ((sc->sc_flags & ACPICPU_FLAG_C) != 0) 291 acpicpu_cstate_start(self); 292 293 sc->sc_cold = false; 294 295 if ((sc->sc_flags & ACPICPU_FLAG_P) != 0) 296 acpicpu_pstate_start(self); 297 298 if ((sc->sc_flags & ACPICPU_FLAG_T) != 0) 299 acpicpu_tstate_start(self); 300 301 acpicpu_sysctl(self); 302 aprint_debug_dev(self, "ACPI CPUs started\n"); 303 304 /* 305 * Register with cpufreq(9). 306 */ 307 if ((sc->sc_flags & ACPICPU_FLAG_P) != 0) { 308 309 (void)memset(&cf, 0, sizeof(struct cpufreq)); 310 311 cf.cf_mp = false; 312 cf.cf_cookie = NULL; 313 cf.cf_get_freq = acpicpu_pstate_get; 314 cf.cf_set_freq = acpicpu_pstate_set; 315 cf.cf_state_count = sc->sc_pstate_count; 316 317 (void)strlcpy(cf.cf_name, "acpicpu", sizeof(cf.cf_name)); 318 319 for (i = 0; i < sc->sc_pstate_count; i++) { 320 321 if (sc->sc_pstate[i].ps_freq == 0) 322 continue; 323 324 cf.cf_state[i].cfs_freq = sc->sc_pstate[i].ps_freq; 325 cf.cf_state[i].cfs_power = sc->sc_pstate[i].ps_power; 326 } 327 328 if (cpufreq_register(&cf) != 0) 329 aprint_error_dev(self, "failed to register cpufreq\n"); 330 } 331 } 332 333 static void 334 acpicpu_sysctl(device_t self) 335 { 336 const struct sysctlnode *node; 337 int err; 338 339 KASSERT(acpicpu_log == NULL); 340 341 err = sysctl_createv(&acpicpu_log, 0, NULL, &node, 342 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", NULL, 343 NULL, 0, NULL, 0, CTL_HW, CTL_EOL); 344 345 if (err != 0) 346 goto fail; 347 348 err = sysctl_createv(&acpicpu_log, 0, &node, &node, 349 CTLFLAG_PERMANENT, CTLTYPE_NODE, "acpi", NULL, 350 NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL); 351 352 if (err != 0) 353 goto fail; 354 355 err = sysctl_createv(&acpicpu_log, 0, &node, &node, 356 0, CTLTYPE_NODE, "cpu", SYSCTL_DESCR("ACPI CPU"), 357 NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL); 358 359 if (err != 0) 360 goto fail; 361 362 err = sysctl_createv(&acpicpu_log, 0, &node, NULL, 363 CTLFLAG_READWRITE, CTLTYPE_BOOL, "dynamic", 364 SYSCTL_DESCR("Dynamic states"), NULL, 0, 365 &acpicpu_dynamic, 0, CTL_CREATE, CTL_EOL); 366 367 if (err != 0) 368 goto fail; 369 370 err = sysctl_createv(&acpicpu_log, 0, &node, NULL, 371 CTLFLAG_READWRITE, CTLTYPE_BOOL, "passive", 372 SYSCTL_DESCR("Passive cooling"), NULL, 0, 373 &acpicpu_passive, 0, CTL_CREATE, CTL_EOL); 374 375 if (err != 0) 376 goto fail; 377 378 return; 379 380 fail: 381 aprint_error_dev(self, "failed to initialize sysctl (err %d)\n", err); 382 } 383 384 static ACPI_STATUS 385 acpicpu_object(ACPI_HANDLE hdl, struct acpicpu_object *ao) 386 { 387 ACPI_OBJECT *obj; 388 ACPI_BUFFER buf; 389 ACPI_STATUS rv; 390 391 rv = acpi_eval_struct(hdl, NULL, &buf); 392 393 if (ACPI_FAILURE(rv)) 394 goto out; 395 396 obj = buf.Pointer; 397 398 if (obj->Type != ACPI_TYPE_PROCESSOR) { 399 rv = AE_TYPE; 400 goto out; 401 } 402 403 if (obj->Processor.ProcId > (uint32_t)maxcpus) { 404 rv = AE_LIMIT; 405 goto out; 406 } 407 408 KDASSERT((uint64_t)obj->Processor.PblkAddress < UINT32_MAX); 409 410 if (ao != NULL) { 411 ao->ao_procid = obj->Processor.ProcId; 412 ao->ao_pblklen = obj->Processor.PblkLength; 413 ao->ao_pblkaddr = obj->Processor.PblkAddress; 414 } 415 416 out: 417 if (buf.Pointer != NULL) 418 ACPI_FREE(buf.Pointer); 419 420 return rv; 421 } 422 423 static uint32_t 424 acpicpu_cap(struct acpicpu_softc *sc) 425 { 426 uint32_t flags, cap = 0; 427 ACPI_STATUS rv; 428 429 /* 430 * Query and set machine-dependent capabilities. 431 * Note that the Intel-specific _PDC method has 432 * already been evaluated. It was furthermore 433 * deprecated in the ACPI 3.0 in favor of _OSC. 434 */ 435 flags = acpi_md_pdc(); 436 rv = acpicpu_cap_osc(sc, flags, &cap); 437 438 if (ACPI_FAILURE(rv) && rv != AE_NOT_FOUND) { 439 440 aprint_error_dev(sc->sc_dev, "failed to evaluate " 441 "_OSC: %s\n", AcpiFormatException(rv)); 442 } 443 444 return (cap != 0) ? cap : flags; 445 } 446 447 static ACPI_STATUS 448 acpicpu_cap_osc(struct acpicpu_softc *sc, uint32_t flags, uint32_t *val) 449 { 450 ACPI_OBJECT_LIST arg; 451 ACPI_OBJECT obj[4]; 452 ACPI_OBJECT *osc; 453 ACPI_BUFFER buf; 454 ACPI_STATUS rv; 455 uint32_t cap[2]; 456 uint32_t *ptr; 457 int i = 5; 458 459 static uint8_t intel_uuid[16] = { 460 0x16, 0xA6, 0x77, 0x40, 0x0C, 0x29, 0xBE, 0x47, 461 0x9E, 0xBD, 0xD8, 0x70, 0x58, 0x71, 0x39, 0x53 462 }; 463 464 cap[0] = ACPI_OSC_QUERY; 465 cap[1] = flags; 466 467 again: 468 arg.Count = 4; 469 arg.Pointer = obj; 470 471 obj[0].Type = ACPI_TYPE_BUFFER; 472 obj[0].Buffer.Length = sizeof(intel_uuid); 473 obj[0].Buffer.Pointer = intel_uuid; 474 475 obj[1].Type = ACPI_TYPE_INTEGER; 476 obj[1].Integer.Value = ACPICPU_PDC_REVID; 477 478 obj[2].Type = ACPI_TYPE_INTEGER; 479 obj[2].Integer.Value = __arraycount(cap); 480 481 obj[3].Type = ACPI_TYPE_BUFFER; 482 obj[3].Buffer.Length = sizeof(cap); 483 obj[3].Buffer.Pointer = (void *)cap; 484 485 buf.Pointer = NULL; 486 buf.Length = ACPI_ALLOCATE_LOCAL_BUFFER; 487 488 rv = AcpiEvaluateObject(sc->sc_node->ad_handle, "_OSC", &arg, &buf); 489 490 if (ACPI_FAILURE(rv)) 491 goto out; 492 493 osc = buf.Pointer; 494 495 if (osc->Type != ACPI_TYPE_BUFFER) { 496 rv = AE_TYPE; 497 goto out; 498 } 499 500 if (osc->Buffer.Length != sizeof(cap)) { 501 rv = AE_BUFFER_OVERFLOW; 502 goto out; 503 } 504 505 ptr = (uint32_t *)osc->Buffer.Pointer; 506 507 if ((ptr[0] & ACPI_OSC_ERROR) != 0) { 508 rv = AE_ERROR; 509 goto out; 510 } 511 512 if ((ptr[0] & (ACPI_OSC_ERROR_REV | ACPI_OSC_ERROR_UUID)) != 0) { 513 rv = AE_BAD_PARAMETER; 514 goto out; 515 } 516 517 /* 518 * "It is strongly recommended that the OS evaluate 519 * _OSC with the Query Support Flag set until _OSC 520 * returns the Capabilities Masked bit clear, to 521 * negotiate the set of features to be granted to 522 * the OS for native support (ACPI 4.0, 6.2.10)." 523 */ 524 if ((ptr[0] & ACPI_OSC_ERROR_MASKED) != 0 && i >= 0) { 525 526 ACPI_FREE(buf.Pointer); 527 i--; 528 529 goto again; 530 } 531 532 if ((cap[0] & ACPI_OSC_QUERY) != 0) { 533 534 ACPI_FREE(buf.Pointer); 535 cap[0] &= ~ACPI_OSC_QUERY; 536 537 goto again; 538 } 539 540 /* 541 * It is permitted for _OSC to return all 542 * bits cleared, but this is specified to 543 * vary on per-device basis. Assume that 544 * everything rather than nothing will be 545 * supported in this case; we do not need 546 * the firmware to know the CPU features. 547 */ 548 *val = (ptr[1] != 0) ? ptr[1] : cap[1]; 549 550 out: 551 if (buf.Pointer != NULL) 552 ACPI_FREE(buf.Pointer); 553 554 return rv; 555 } 556 557 static void 558 acpicpu_notify(ACPI_HANDLE hdl, uint32_t evt, void *aux) 559 { 560 ACPI_OSD_EXEC_CALLBACK func; 561 struct acpicpu_softc *sc; 562 device_t self = aux; 563 564 sc = device_private(self); 565 566 if (sc->sc_cold != false) 567 return; 568 569 if (acpicpu_dynamic != true) 570 return; 571 572 switch (evt) { 573 574 case ACPICPU_C_NOTIFY: 575 576 if ((sc->sc_flags & ACPICPU_FLAG_C) == 0) 577 return; 578 579 func = acpicpu_cstate_callback; 580 break; 581 582 case ACPICPU_P_NOTIFY: 583 584 if ((sc->sc_flags & ACPICPU_FLAG_P) == 0) 585 return; 586 587 func = acpicpu_pstate_callback; 588 break; 589 590 case ACPICPU_T_NOTIFY: 591 592 if ((sc->sc_flags & ACPICPU_FLAG_T) == 0) 593 return; 594 595 func = acpicpu_tstate_callback; 596 break; 597 598 default: 599 aprint_error_dev(sc->sc_dev, "unknown notify: 0x%02X\n", evt); 600 return; 601 } 602 603 (void)AcpiOsExecute(OSL_NOTIFY_HANDLER, func, sc->sc_dev); 604 } 605 606 static bool 607 acpicpu_suspend(device_t self, const pmf_qual_t *qual) 608 { 609 struct acpicpu_softc *sc = device_private(self); 610 611 if ((sc->sc_flags & ACPICPU_FLAG_C) != 0) 612 (void)acpicpu_cstate_suspend(self); 613 614 if ((sc->sc_flags & ACPICPU_FLAG_P) != 0) 615 (void)acpicpu_pstate_suspend(self); 616 617 if ((sc->sc_flags & ACPICPU_FLAG_T) != 0) 618 (void)acpicpu_tstate_suspend(self); 619 620 sc->sc_cold = true; 621 622 return true; 623 } 624 625 static bool 626 acpicpu_resume(device_t self, const pmf_qual_t *qual) 627 { 628 struct acpicpu_softc *sc = device_private(self); 629 static const int handler = OSL_NOTIFY_HANDLER; 630 631 sc->sc_cold = false; 632 633 if ((sc->sc_flags & ACPICPU_FLAG_C) != 0) 634 (void)AcpiOsExecute(handler, acpicpu_cstate_resume, self); 635 636 if ((sc->sc_flags & ACPICPU_FLAG_P) != 0) 637 (void)AcpiOsExecute(handler, acpicpu_pstate_resume, self); 638 639 if ((sc->sc_flags & ACPICPU_FLAG_T) != 0) 640 (void)AcpiOsExecute(handler, acpicpu_tstate_resume, self); 641 642 return true; 643 } 644 645 static void 646 acpicpu_evcnt_attach(device_t self) 647 { 648 struct acpicpu_softc *sc = device_private(self); 649 struct acpicpu_cstate *cs; 650 struct acpicpu_pstate *ps; 651 struct acpicpu_tstate *ts; 652 const char *str; 653 uint32_t i; 654 655 for (i = 0; i < __arraycount(sc->sc_cstate); i++) { 656 657 cs = &sc->sc_cstate[i]; 658 659 if (cs->cs_method == 0) 660 continue; 661 662 str = "HALT"; 663 664 if (cs->cs_method == ACPICPU_C_STATE_FFH) 665 str = "MWAIT"; 666 667 if (cs->cs_method == ACPICPU_C_STATE_SYSIO) 668 str = "I/O"; 669 670 (void)snprintf(cs->cs_name, sizeof(cs->cs_name), 671 "C%d (%s)", i, str); 672 673 evcnt_attach_dynamic(&cs->cs_evcnt, EVCNT_TYPE_MISC, 674 NULL, device_xname(sc->sc_dev), cs->cs_name); 675 } 676 677 for (i = 0; i < sc->sc_pstate_count; i++) { 678 679 ps = &sc->sc_pstate[i]; 680 681 if (ps->ps_freq == 0) 682 continue; 683 684 (void)snprintf(ps->ps_name, sizeof(ps->ps_name), 685 "P%u (%u MHz)", i, ps->ps_freq); 686 687 evcnt_attach_dynamic(&ps->ps_evcnt, EVCNT_TYPE_MISC, 688 NULL, device_xname(sc->sc_dev), ps->ps_name); 689 } 690 691 for (i = 0; i < sc->sc_tstate_count; i++) { 692 693 ts = &sc->sc_tstate[i]; 694 695 if (ts->ts_percent == 0) 696 continue; 697 698 (void)snprintf(ts->ts_name, sizeof(ts->ts_name), 699 "T%u (%u %%)", i, ts->ts_percent); 700 701 evcnt_attach_dynamic(&ts->ts_evcnt, EVCNT_TYPE_MISC, 702 NULL, device_xname(sc->sc_dev), ts->ts_name); 703 } 704 } 705 706 static void 707 acpicpu_evcnt_detach(device_t self) 708 { 709 struct acpicpu_softc *sc = device_private(self); 710 struct acpicpu_cstate *cs; 711 struct acpicpu_pstate *ps; 712 struct acpicpu_tstate *ts; 713 uint32_t i; 714 715 for (i = 0; i < __arraycount(sc->sc_cstate); i++) { 716 717 cs = &sc->sc_cstate[i]; 718 719 if (cs->cs_method != 0) 720 evcnt_detach(&cs->cs_evcnt); 721 } 722 723 for (i = 0; i < sc->sc_pstate_count; i++) { 724 725 ps = &sc->sc_pstate[i]; 726 727 if (ps->ps_freq != 0) 728 evcnt_detach(&ps->ps_evcnt); 729 } 730 731 for (i = 0; i < sc->sc_tstate_count; i++) { 732 733 ts = &sc->sc_tstate[i]; 734 735 if (ts->ts_percent != 0) 736 evcnt_detach(&ts->ts_evcnt); 737 } 738 } 739 740 static void 741 acpicpu_debug_print(device_t self) 742 { 743 struct acpicpu_softc *sc = device_private(self); 744 struct cpu_info *ci = sc->sc_ci; 745 struct acpicpu_cstate *cs; 746 struct acpicpu_pstate *ps; 747 struct acpicpu_tstate *ts; 748 static bool once = false; 749 struct acpicpu_dep *dep; 750 uint32_t i, method; 751 752 if (once != true) { 753 754 for (i = 0; i < __arraycount(sc->sc_cstate); i++) { 755 756 cs = &sc->sc_cstate[i]; 757 758 if (cs->cs_method == 0) 759 continue; 760 761 aprint_verbose_dev(sc->sc_dev, "C%d: %3s, " 762 "lat %3u us, pow %5u mW%s\n", i, 763 acpicpu_debug_print_method_c(cs->cs_method), 764 cs->cs_latency, cs->cs_power, 765 (cs->cs_flags != 0) ? ", bus master check" : ""); 766 } 767 768 method = sc->sc_pstate_control.reg_spaceid; 769 770 for (i = 0; i < sc->sc_pstate_count; i++) { 771 772 ps = &sc->sc_pstate[i]; 773 774 if (ps->ps_freq == 0) 775 continue; 776 777 aprint_verbose_dev(sc->sc_dev, "P%d: %3s, " 778 "lat %3u us, pow %5u mW, %4u MHz%s\n", i, 779 acpicpu_debug_print_method_pt(method), 780 ps->ps_latency, ps->ps_power, ps->ps_freq, 781 (ps->ps_flags & ACPICPU_FLAG_P_TURBO) != 0 ? 782 ", turbo boost" : ""); 783 } 784 785 method = sc->sc_tstate_control.reg_spaceid; 786 787 for (i = 0; i < sc->sc_tstate_count; i++) { 788 789 ts = &sc->sc_tstate[i]; 790 791 if (ts->ts_percent == 0) 792 continue; 793 794 aprint_verbose_dev(sc->sc_dev, "T%u: %3s, " 795 "lat %3u us, pow %5u mW, %3u %%\n", i, 796 acpicpu_debug_print_method_pt(method), 797 ts->ts_latency, ts->ts_power, ts->ts_percent); 798 } 799 800 once = true; 801 } 802 803 aprint_debug_dev(sc->sc_dev, "id %u, lapic id %u, " 804 "cap 0x%04x, flags 0x%08x\n", ci->ci_acpiid, 805 (uint32_t)ci->ci_cpuid, sc->sc_cap, sc->sc_flags); 806 807 if ((sc->sc_flags & ACPICPU_FLAG_C_DEP) != 0) { 808 809 dep = &sc->sc_cstate_dep; 810 811 aprint_debug_dev(sc->sc_dev, "C-state coordination: " 812 "%u CPUs, domain %u, type %s\n", dep->dep_ncpus, 813 dep->dep_domain, acpicpu_debug_print_dep(dep->dep_type)); 814 } 815 816 if ((sc->sc_flags & ACPICPU_FLAG_P_DEP) != 0) { 817 818 dep = &sc->sc_pstate_dep; 819 820 aprint_debug_dev(sc->sc_dev, "P-state coordination: " 821 "%u CPUs, domain %u, type %s\n", dep->dep_ncpus, 822 dep->dep_domain, acpicpu_debug_print_dep(dep->dep_type)); 823 } 824 825 if ((sc->sc_flags & ACPICPU_FLAG_T_DEP) != 0) { 826 827 dep = &sc->sc_tstate_dep; 828 829 aprint_debug_dev(sc->sc_dev, "T-state coordination: " 830 "%u CPUs, domain %u, type %s\n", dep->dep_ncpus, 831 dep->dep_domain, acpicpu_debug_print_dep(dep->dep_type)); 832 } 833 } 834 835 static const char * 836 acpicpu_debug_print_method_c(uint8_t val) 837 { 838 839 if (val == ACPICPU_C_STATE_FFH) 840 return "FFH"; 841 842 if (val == ACPICPU_C_STATE_HALT) 843 return "HLT"; 844 845 if (val == ACPICPU_C_STATE_SYSIO) 846 return "I/O"; 847 848 return "???"; 849 } 850 851 static const char * 852 acpicpu_debug_print_method_pt(uint8_t val) 853 { 854 855 if (val == ACPI_ADR_SPACE_SYSTEM_IO) 856 return "I/O"; 857 858 if (val == ACPI_ADR_SPACE_FIXED_HARDWARE) 859 return "FFH"; 860 861 return "???"; 862 } 863 864 static const char * 865 acpicpu_debug_print_dep(uint32_t val) 866 { 867 868 switch (val) { 869 870 case ACPICPU_DEP_SW_ALL: 871 return "SW_ALL"; 872 873 case ACPICPU_DEP_SW_ANY: 874 return "SW_ANY"; 875 876 case ACPICPU_DEP_HW_ALL: 877 return "HW_ALL"; 878 879 default: 880 return "unknown"; 881 } 882 } 883 884 MODULE(MODULE_CLASS_DRIVER, acpicpu, NULL); 885 886 #ifdef _MODULE 887 #include "ioconf.c" 888 #endif 889 890 static int 891 acpicpu_modcmd(modcmd_t cmd, void *aux) 892 { 893 int rv = 0; 894 895 switch (cmd) { 896 897 case MODULE_CMD_INIT: 898 899 #ifdef _MODULE 900 rv = config_init_component(cfdriver_ioconf_acpicpu, 901 cfattach_ioconf_acpicpu, cfdata_ioconf_acpicpu); 902 #endif 903 break; 904 905 case MODULE_CMD_FINI: 906 907 #ifdef _MODULE 908 rv = config_fini_component(cfdriver_ioconf_acpicpu, 909 cfattach_ioconf_acpicpu, cfdata_ioconf_acpicpu); 910 #endif 911 break; 912 913 default: 914 rv = ENOTTY; 915 } 916 917 return rv; 918 } 919