acpi_cpu.c revision 1.51
1 /* $NetBSD: acpi_cpu.c,v 1.51 2017/06/01 02:45:09 chs 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 1.51 2017/06/01 02:45:09 chs 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 for (i = 0; i < maxcpus; i++) 242 acpicpu_sc[i] = NULL; 243 244 return 0; 245 } 246 247 static int 248 acpicpu_once_detach(void) 249 { 250 struct acpicpu_softc *sc; 251 252 if (acpicpu_count != 0) 253 return EDEADLK; 254 255 cpufreq_deregister(); 256 257 if (acpicpu_log != NULL) 258 sysctl_teardown(&acpicpu_log); 259 260 if (acpicpu_sc != NULL) 261 kmem_free(acpicpu_sc, maxcpus * sizeof(*sc)); 262 263 return 0; 264 } 265 266 static void 267 acpicpu_start(device_t self) 268 { 269 struct acpicpu_softc *sc = device_private(self); 270 static uint32_t count = 0; 271 struct cpufreq cf; 272 uint32_t i; 273 274 /* 275 * Run the state-specific initialization routines. These 276 * must run only once, after interrupts have been enabled, 277 * all CPUs are running, and all ACPI CPUs have attached. 278 */ 279 if (++count != acpicpu_count || acpicpu_count != sc->sc_ncpus) { 280 sc->sc_cold = false; 281 return; 282 } 283 284 /* 285 * Set the last ACPI CPU as non-cold 286 * only after C-states are enabled. 287 */ 288 if ((sc->sc_flags & ACPICPU_FLAG_C) != 0) 289 acpicpu_cstate_start(self); 290 291 sc->sc_cold = false; 292 293 if ((sc->sc_flags & ACPICPU_FLAG_P) != 0) 294 acpicpu_pstate_start(self); 295 296 if ((sc->sc_flags & ACPICPU_FLAG_T) != 0) 297 acpicpu_tstate_start(self); 298 299 acpicpu_sysctl(self); 300 aprint_debug_dev(self, "ACPI CPUs started\n"); 301 302 /* 303 * Register with cpufreq(9). 304 */ 305 if ((sc->sc_flags & ACPICPU_FLAG_P) != 0) { 306 307 (void)memset(&cf, 0, sizeof(struct cpufreq)); 308 309 cf.cf_mp = false; 310 cf.cf_cookie = NULL; 311 cf.cf_get_freq = acpicpu_pstate_get; 312 cf.cf_set_freq = acpicpu_pstate_set; 313 cf.cf_state_count = sc->sc_pstate_count; 314 315 (void)strlcpy(cf.cf_name, "acpicpu", sizeof(cf.cf_name)); 316 317 for (i = 0; i < sc->sc_pstate_count; i++) { 318 319 if (sc->sc_pstate[i].ps_freq == 0) 320 continue; 321 322 cf.cf_state[i].cfs_freq = sc->sc_pstate[i].ps_freq; 323 cf.cf_state[i].cfs_power = sc->sc_pstate[i].ps_power; 324 } 325 326 if (cpufreq_register(&cf) != 0) 327 aprint_error_dev(self, "failed to register cpufreq\n"); 328 } 329 } 330 331 static void 332 acpicpu_sysctl(device_t self) 333 { 334 const struct sysctlnode *node; 335 int err; 336 337 KASSERT(acpicpu_log == NULL); 338 339 err = sysctl_createv(&acpicpu_log, 0, NULL, &node, 340 CTLFLAG_PERMANENT, CTLTYPE_NODE, "acpi", NULL, 341 NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL); 342 343 if (err != 0) 344 goto fail; 345 346 err = sysctl_createv(&acpicpu_log, 0, &node, &node, 347 0, CTLTYPE_NODE, "cpu", SYSCTL_DESCR("ACPI CPU"), 348 NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL); 349 350 if (err != 0) 351 goto fail; 352 353 err = sysctl_createv(&acpicpu_log, 0, &node, NULL, 354 CTLFLAG_READWRITE, CTLTYPE_BOOL, "dynamic", 355 SYSCTL_DESCR("Dynamic states"), NULL, 0, 356 &acpicpu_dynamic, 0, CTL_CREATE, CTL_EOL); 357 358 if (err != 0) 359 goto fail; 360 361 err = sysctl_createv(&acpicpu_log, 0, &node, NULL, 362 CTLFLAG_READWRITE, CTLTYPE_BOOL, "passive", 363 SYSCTL_DESCR("Passive cooling"), NULL, 0, 364 &acpicpu_passive, 0, CTL_CREATE, CTL_EOL); 365 366 if (err != 0) 367 goto fail; 368 369 return; 370 371 fail: 372 aprint_error_dev(self, "failed to initialize sysctl (err %d)\n", err); 373 } 374 375 static ACPI_STATUS 376 acpicpu_object(ACPI_HANDLE hdl, struct acpicpu_object *ao) 377 { 378 ACPI_OBJECT *obj; 379 ACPI_BUFFER buf; 380 ACPI_STATUS rv; 381 382 rv = acpi_eval_struct(hdl, NULL, &buf); 383 384 if (ACPI_FAILURE(rv)) 385 goto out; 386 387 obj = buf.Pointer; 388 389 if (obj->Type != ACPI_TYPE_PROCESSOR) { 390 rv = AE_TYPE; 391 goto out; 392 } 393 394 if (obj->Processor.ProcId > (uint32_t)maxcpus) { 395 rv = AE_LIMIT; 396 goto out; 397 } 398 399 KDASSERT((uint64_t)obj->Processor.PblkAddress < UINT32_MAX); 400 401 if (ao != NULL) { 402 ao->ao_procid = obj->Processor.ProcId; 403 ao->ao_pblklen = obj->Processor.PblkLength; 404 ao->ao_pblkaddr = obj->Processor.PblkAddress; 405 } 406 407 out: 408 if (buf.Pointer != NULL) 409 ACPI_FREE(buf.Pointer); 410 411 return rv; 412 } 413 414 static uint32_t 415 acpicpu_cap(struct acpicpu_softc *sc) 416 { 417 uint32_t flags, cap = 0; 418 ACPI_STATUS rv; 419 420 /* 421 * Query and set machine-dependent capabilities. 422 * Note that the Intel-specific _PDC method has 423 * already been evaluated. It was furthermore 424 * deprecated in the ACPI 3.0 in favor of _OSC. 425 */ 426 flags = acpi_md_pdc(); 427 rv = acpicpu_cap_osc(sc, flags, &cap); 428 429 if (ACPI_FAILURE(rv) && rv != AE_NOT_FOUND) { 430 431 aprint_error_dev(sc->sc_dev, "failed to evaluate " 432 "_OSC: %s\n", AcpiFormatException(rv)); 433 } 434 435 return (cap != 0) ? cap : flags; 436 } 437 438 static ACPI_STATUS 439 acpicpu_cap_osc(struct acpicpu_softc *sc, uint32_t flags, uint32_t *val) 440 { 441 ACPI_OBJECT_LIST arg; 442 ACPI_OBJECT obj[4]; 443 ACPI_OBJECT *osc; 444 ACPI_BUFFER buf; 445 ACPI_STATUS rv; 446 uint32_t cap[2]; 447 uint32_t *ptr; 448 int i = 5; 449 450 static uint8_t intel_uuid[16] = { 451 0x16, 0xA6, 0x77, 0x40, 0x0C, 0x29, 0xBE, 0x47, 452 0x9E, 0xBD, 0xD8, 0x70, 0x58, 0x71, 0x39, 0x53 453 }; 454 455 cap[0] = ACPI_OSC_QUERY; 456 cap[1] = flags; 457 458 again: 459 arg.Count = 4; 460 arg.Pointer = obj; 461 462 obj[0].Type = ACPI_TYPE_BUFFER; 463 obj[0].Buffer.Length = sizeof(intel_uuid); 464 obj[0].Buffer.Pointer = intel_uuid; 465 466 obj[1].Type = ACPI_TYPE_INTEGER; 467 obj[1].Integer.Value = ACPICPU_PDC_REVID; 468 469 obj[2].Type = ACPI_TYPE_INTEGER; 470 obj[2].Integer.Value = __arraycount(cap); 471 472 obj[3].Type = ACPI_TYPE_BUFFER; 473 obj[3].Buffer.Length = sizeof(cap); 474 obj[3].Buffer.Pointer = (void *)cap; 475 476 buf.Pointer = NULL; 477 buf.Length = ACPI_ALLOCATE_LOCAL_BUFFER; 478 479 rv = AcpiEvaluateObject(sc->sc_node->ad_handle, "_OSC", &arg, &buf); 480 481 if (ACPI_FAILURE(rv)) 482 goto out; 483 484 osc = buf.Pointer; 485 486 if (osc->Type != ACPI_TYPE_BUFFER) { 487 rv = AE_TYPE; 488 goto out; 489 } 490 491 if (osc->Buffer.Length != sizeof(cap)) { 492 rv = AE_BUFFER_OVERFLOW; 493 goto out; 494 } 495 496 ptr = (uint32_t *)osc->Buffer.Pointer; 497 498 if ((ptr[0] & ACPI_OSC_ERROR) != 0) { 499 rv = AE_ERROR; 500 goto out; 501 } 502 503 if ((ptr[0] & (ACPI_OSC_ERROR_REV | ACPI_OSC_ERROR_UUID)) != 0) { 504 rv = AE_BAD_PARAMETER; 505 goto out; 506 } 507 508 /* 509 * "It is strongly recommended that the OS evaluate 510 * _OSC with the Query Support Flag set until _OSC 511 * returns the Capabilities Masked bit clear, to 512 * negotiate the set of features to be granted to 513 * the OS for native support (ACPI 4.0, 6.2.10)." 514 */ 515 if ((ptr[0] & ACPI_OSC_ERROR_MASKED) != 0 && i >= 0) { 516 517 ACPI_FREE(buf.Pointer); 518 i--; 519 520 goto again; 521 } 522 523 if ((cap[0] & ACPI_OSC_QUERY) != 0) { 524 525 ACPI_FREE(buf.Pointer); 526 cap[0] &= ~ACPI_OSC_QUERY; 527 528 goto again; 529 } 530 531 /* 532 * It is permitted for _OSC to return all 533 * bits cleared, but this is specified to 534 * vary on per-device basis. Assume that 535 * everything rather than nothing will be 536 * supported in this case; we do not need 537 * the firmware to know the CPU features. 538 */ 539 *val = (ptr[1] != 0) ? ptr[1] : cap[1]; 540 541 out: 542 if (buf.Pointer != NULL) 543 ACPI_FREE(buf.Pointer); 544 545 return rv; 546 } 547 548 static void 549 acpicpu_notify(ACPI_HANDLE hdl, uint32_t evt, void *aux) 550 { 551 ACPI_OSD_EXEC_CALLBACK func; 552 struct acpicpu_softc *sc; 553 device_t self = aux; 554 555 sc = device_private(self); 556 557 if (sc->sc_cold != false) 558 return; 559 560 if (acpicpu_dynamic != true) 561 return; 562 563 switch (evt) { 564 565 case ACPICPU_C_NOTIFY: 566 567 if ((sc->sc_flags & ACPICPU_FLAG_C) == 0) 568 return; 569 570 func = acpicpu_cstate_callback; 571 break; 572 573 case ACPICPU_P_NOTIFY: 574 575 if ((sc->sc_flags & ACPICPU_FLAG_P) == 0) 576 return; 577 578 func = acpicpu_pstate_callback; 579 break; 580 581 case ACPICPU_T_NOTIFY: 582 583 if ((sc->sc_flags & ACPICPU_FLAG_T) == 0) 584 return; 585 586 func = acpicpu_tstate_callback; 587 break; 588 589 default: 590 aprint_error_dev(sc->sc_dev, "unknown notify: 0x%02X\n", evt); 591 return; 592 } 593 594 (void)AcpiOsExecute(OSL_NOTIFY_HANDLER, func, sc->sc_dev); 595 } 596 597 static bool 598 acpicpu_suspend(device_t self, const pmf_qual_t *qual) 599 { 600 struct acpicpu_softc *sc = device_private(self); 601 602 if ((sc->sc_flags & ACPICPU_FLAG_C) != 0) 603 (void)acpicpu_cstate_suspend(self); 604 605 if ((sc->sc_flags & ACPICPU_FLAG_P) != 0) 606 (void)acpicpu_pstate_suspend(self); 607 608 if ((sc->sc_flags & ACPICPU_FLAG_T) != 0) 609 (void)acpicpu_tstate_suspend(self); 610 611 sc->sc_cold = true; 612 613 return true; 614 } 615 616 static bool 617 acpicpu_resume(device_t self, const pmf_qual_t *qual) 618 { 619 struct acpicpu_softc *sc = device_private(self); 620 static const int handler = OSL_NOTIFY_HANDLER; 621 622 sc->sc_cold = false; 623 624 if ((sc->sc_flags & ACPICPU_FLAG_C) != 0) 625 (void)AcpiOsExecute(handler, acpicpu_cstate_resume, self); 626 627 if ((sc->sc_flags & ACPICPU_FLAG_P) != 0) 628 (void)AcpiOsExecute(handler, acpicpu_pstate_resume, self); 629 630 if ((sc->sc_flags & ACPICPU_FLAG_T) != 0) 631 (void)AcpiOsExecute(handler, acpicpu_tstate_resume, self); 632 633 return true; 634 } 635 636 static void 637 acpicpu_evcnt_attach(device_t self) 638 { 639 struct acpicpu_softc *sc = device_private(self); 640 struct acpicpu_cstate *cs; 641 struct acpicpu_pstate *ps; 642 struct acpicpu_tstate *ts; 643 const char *str; 644 uint32_t i; 645 646 for (i = 0; i < __arraycount(sc->sc_cstate); i++) { 647 648 cs = &sc->sc_cstate[i]; 649 650 if (cs->cs_method == 0) 651 continue; 652 653 str = "HALT"; 654 655 if (cs->cs_method == ACPICPU_C_STATE_FFH) 656 str = "MWAIT"; 657 658 if (cs->cs_method == ACPICPU_C_STATE_SYSIO) 659 str = "I/O"; 660 661 (void)snprintf(cs->cs_name, sizeof(cs->cs_name), 662 "C%d (%s)", i, str); 663 664 evcnt_attach_dynamic(&cs->cs_evcnt, EVCNT_TYPE_MISC, 665 NULL, device_xname(sc->sc_dev), cs->cs_name); 666 } 667 668 for (i = 0; i < sc->sc_pstate_count; i++) { 669 670 ps = &sc->sc_pstate[i]; 671 672 if (ps->ps_freq == 0) 673 continue; 674 675 (void)snprintf(ps->ps_name, sizeof(ps->ps_name), 676 "P%u (%u MHz)", i, ps->ps_freq); 677 678 evcnt_attach_dynamic(&ps->ps_evcnt, EVCNT_TYPE_MISC, 679 NULL, device_xname(sc->sc_dev), ps->ps_name); 680 } 681 682 for (i = 0; i < sc->sc_tstate_count; i++) { 683 684 ts = &sc->sc_tstate[i]; 685 686 if (ts->ts_percent == 0) 687 continue; 688 689 (void)snprintf(ts->ts_name, sizeof(ts->ts_name), 690 "T%u (%u %%)", i, ts->ts_percent); 691 692 evcnt_attach_dynamic(&ts->ts_evcnt, EVCNT_TYPE_MISC, 693 NULL, device_xname(sc->sc_dev), ts->ts_name); 694 } 695 } 696 697 static void 698 acpicpu_evcnt_detach(device_t self) 699 { 700 struct acpicpu_softc *sc = device_private(self); 701 struct acpicpu_cstate *cs; 702 struct acpicpu_pstate *ps; 703 struct acpicpu_tstate *ts; 704 uint32_t i; 705 706 for (i = 0; i < __arraycount(sc->sc_cstate); i++) { 707 708 cs = &sc->sc_cstate[i]; 709 710 if (cs->cs_method != 0) 711 evcnt_detach(&cs->cs_evcnt); 712 } 713 714 for (i = 0; i < sc->sc_pstate_count; i++) { 715 716 ps = &sc->sc_pstate[i]; 717 718 if (ps->ps_freq != 0) 719 evcnt_detach(&ps->ps_evcnt); 720 } 721 722 for (i = 0; i < sc->sc_tstate_count; i++) { 723 724 ts = &sc->sc_tstate[i]; 725 726 if (ts->ts_percent != 0) 727 evcnt_detach(&ts->ts_evcnt); 728 } 729 } 730 731 static void 732 acpicpu_debug_print(device_t self) 733 { 734 struct acpicpu_softc *sc = device_private(self); 735 struct cpu_info *ci = sc->sc_ci; 736 struct acpicpu_cstate *cs; 737 struct acpicpu_pstate *ps; 738 struct acpicpu_tstate *ts; 739 static bool once = false; 740 struct acpicpu_dep *dep; 741 uint32_t i, method; 742 743 if (once != true) { 744 745 for (i = 0; i < __arraycount(sc->sc_cstate); i++) { 746 747 cs = &sc->sc_cstate[i]; 748 749 if (cs->cs_method == 0) 750 continue; 751 752 aprint_verbose_dev(sc->sc_dev, "C%d: %3s, " 753 "lat %3u us, pow %5u mW%s\n", i, 754 acpicpu_debug_print_method_c(cs->cs_method), 755 cs->cs_latency, cs->cs_power, 756 (cs->cs_flags != 0) ? ", bus master check" : ""); 757 } 758 759 method = sc->sc_pstate_control.reg_spaceid; 760 761 for (i = 0; i < sc->sc_pstate_count; i++) { 762 763 ps = &sc->sc_pstate[i]; 764 765 if (ps->ps_freq == 0) 766 continue; 767 768 aprint_verbose_dev(sc->sc_dev, "P%d: %3s, " 769 "lat %3u us, pow %5u mW, %4u MHz%s\n", i, 770 acpicpu_debug_print_method_pt(method), 771 ps->ps_latency, ps->ps_power, ps->ps_freq, 772 (ps->ps_flags & ACPICPU_FLAG_P_TURBO) != 0 ? 773 ", turbo boost" : ""); 774 } 775 776 method = sc->sc_tstate_control.reg_spaceid; 777 778 for (i = 0; i < sc->sc_tstate_count; i++) { 779 780 ts = &sc->sc_tstate[i]; 781 782 if (ts->ts_percent == 0) 783 continue; 784 785 aprint_verbose_dev(sc->sc_dev, "T%u: %3s, " 786 "lat %3u us, pow %5u mW, %3u %%\n", i, 787 acpicpu_debug_print_method_pt(method), 788 ts->ts_latency, ts->ts_power, ts->ts_percent); 789 } 790 791 once = true; 792 } 793 794 aprint_debug_dev(sc->sc_dev, "id %u, lapic id %u, " 795 "cap 0x%04x, flags 0x%08x\n", ci->ci_acpiid, 796 (uint32_t)ci->ci_cpuid, sc->sc_cap, sc->sc_flags); 797 798 if ((sc->sc_flags & ACPICPU_FLAG_C_DEP) != 0) { 799 800 dep = &sc->sc_cstate_dep; 801 802 aprint_debug_dev(sc->sc_dev, "C-state coordination: " 803 "%u CPUs, domain %u, type %s\n", dep->dep_ncpus, 804 dep->dep_domain, acpicpu_debug_print_dep(dep->dep_type)); 805 } 806 807 if ((sc->sc_flags & ACPICPU_FLAG_P_DEP) != 0) { 808 809 dep = &sc->sc_pstate_dep; 810 811 aprint_debug_dev(sc->sc_dev, "P-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_T_DEP) != 0) { 817 818 dep = &sc->sc_tstate_dep; 819 820 aprint_debug_dev(sc->sc_dev, "T-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 } 825 826 static const char * 827 acpicpu_debug_print_method_c(uint8_t val) 828 { 829 830 if (val == ACPICPU_C_STATE_FFH) 831 return "FFH"; 832 833 if (val == ACPICPU_C_STATE_HALT) 834 return "HLT"; 835 836 if (val == ACPICPU_C_STATE_SYSIO) 837 return "I/O"; 838 839 return "???"; 840 } 841 842 static const char * 843 acpicpu_debug_print_method_pt(uint8_t val) 844 { 845 846 if (val == ACPI_ADR_SPACE_SYSTEM_IO) 847 return "I/O"; 848 849 if (val == ACPI_ADR_SPACE_FIXED_HARDWARE) 850 return "FFH"; 851 852 return "???"; 853 } 854 855 static const char * 856 acpicpu_debug_print_dep(uint32_t val) 857 { 858 859 switch (val) { 860 861 case ACPICPU_DEP_SW_ALL: 862 return "SW_ALL"; 863 864 case ACPICPU_DEP_SW_ANY: 865 return "SW_ANY"; 866 867 case ACPICPU_DEP_HW_ALL: 868 return "HW_ALL"; 869 870 default: 871 return "unknown"; 872 } 873 } 874 875 MODULE(MODULE_CLASS_DRIVER, acpicpu, NULL); 876 877 #ifdef _MODULE 878 #include "ioconf.c" 879 #endif 880 881 static int 882 acpicpu_modcmd(modcmd_t cmd, void *aux) 883 { 884 int rv = 0; 885 886 switch (cmd) { 887 888 case MODULE_CMD_INIT: 889 890 #ifdef _MODULE 891 rv = config_init_component(cfdriver_ioconf_acpicpu, 892 cfattach_ioconf_acpicpu, cfdata_ioconf_acpicpu); 893 #endif 894 break; 895 896 case MODULE_CMD_FINI: 897 898 #ifdef _MODULE 899 rv = config_fini_component(cfdriver_ioconf_acpicpu, 900 cfattach_ioconf_acpicpu, cfdata_ioconf_acpicpu); 901 #endif 902 break; 903 904 default: 905 rv = ENOTTY; 906 } 907 908 return rv; 909 } 910
Indexes created Wed Oct 01 19:09:53 GMT 2025