| 1 | /* $NetBSD: acpi_cpu.c,v 1.50 2014/02/25 18:30:09 pooka 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 1.50 2014/02/25 18:30:09 pooka 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, "acpi" , NULL, |
| 344 | NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL); |
| 345 | |
| 346 | if (err != 0) |
| 347 | goto fail; |
| 348 | |
| 349 | err = sysctl_createv(&acpicpu_log, 0, &node, &node, |
| 350 | 0, CTLTYPE_NODE, "cpu" , SYSCTL_DESCR("ACPI CPU" ), |
| 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, NULL, |
| 357 | CTLFLAG_READWRITE, CTLTYPE_BOOL, "dynamic" , |
| 358 | SYSCTL_DESCR("Dynamic states" ), NULL, 0, |
| 359 | &acpicpu_dynamic, 0, CTL_CREATE, CTL_EOL); |
| 360 | |
| 361 | if (err != 0) |
| 362 | goto fail; |
| 363 | |
| 364 | err = sysctl_createv(&acpicpu_log, 0, &node, NULL, |
| 365 | CTLFLAG_READWRITE, CTLTYPE_BOOL, "passive" , |
| 366 | SYSCTL_DESCR("Passive cooling" ), NULL, 0, |
| 367 | &acpicpu_passive, 0, CTL_CREATE, CTL_EOL); |
| 368 | |
| 369 | if (err != 0) |
| 370 | goto fail; |
| 371 | |
| 372 | return; |
| 373 | |
| 374 | fail: |
| 375 | aprint_error_dev(self, "failed to initialize sysctl (err %d)\n" , err); |
| 376 | } |
| 377 | |
| 378 | static ACPI_STATUS |
| 379 | acpicpu_object(ACPI_HANDLE hdl, struct acpicpu_object *ao) |
| 380 | { |
| 381 | ACPI_OBJECT *obj; |
| 382 | ACPI_BUFFER buf; |
| 383 | ACPI_STATUS rv; |
| 384 | |
| 385 | rv = acpi_eval_struct(hdl, NULL, &buf); |
| 386 | |
| 387 | if (ACPI_FAILURE(rv)) |
| 388 | goto out; |
| 389 | |
| 390 | obj = buf.Pointer; |
| 391 | |
| 392 | if (obj->Type != ACPI_TYPE_PROCESSOR) { |
| 393 | rv = AE_TYPE; |
| 394 | goto out; |
| 395 | } |
| 396 | |
| 397 | if (obj->Processor.ProcId > (uint32_t)maxcpus) { |
| 398 | rv = AE_LIMIT; |
| 399 | goto out; |
| 400 | } |
| 401 | |
| 402 | KDASSERT((uint64_t)obj->Processor.PblkAddress < UINT32_MAX); |
| 403 | |
| 404 | if (ao != NULL) { |
| 405 | ao->ao_procid = obj->Processor.ProcId; |
| 406 | ao->ao_pblklen = obj->Processor.PblkLength; |
| 407 | ao->ao_pblkaddr = obj->Processor.PblkAddress; |
| 408 | } |
| 409 | |
| 410 | out: |
| 411 | if (buf.Pointer != NULL) |
| 412 | ACPI_FREE(buf.Pointer); |
| 413 | |
| 414 | return rv; |
| 415 | } |
| 416 | |
| 417 | static uint32_t |
| 418 | acpicpu_cap(struct acpicpu_softc *sc) |
| 419 | { |
| 420 | uint32_t flags, cap = 0; |
| 421 | ACPI_STATUS rv; |
| 422 | |
| 423 | /* |
| 424 | * Query and set machine-dependent capabilities. |
| 425 | * Note that the Intel-specific _PDC method has |
| 426 | * already been evaluated. It was furthermore |
| 427 | * deprecated in the ACPI 3.0 in favor of _OSC. |
| 428 | */ |
| 429 | flags = acpi_md_pdc(); |
| 430 | rv = acpicpu_cap_osc(sc, flags, &cap); |
| 431 | |
| 432 | if (ACPI_FAILURE(rv) && rv != AE_NOT_FOUND) { |
| 433 | |
| 434 | aprint_error_dev(sc->sc_dev, "failed to evaluate " |
| 435 | "_OSC: %s\n" , AcpiFormatException(rv)); |
| 436 | } |
| 437 | |
| 438 | return (cap != 0) ? cap : flags; |
| 439 | } |
| 440 | |
| 441 | static ACPI_STATUS |
| 442 | acpicpu_cap_osc(struct acpicpu_softc *sc, uint32_t flags, uint32_t *val) |
| 443 | { |
| 444 | ACPI_OBJECT_LIST arg; |
| 445 | ACPI_OBJECT obj[4]; |
| 446 | ACPI_OBJECT *osc; |
| 447 | ACPI_BUFFER buf; |
| 448 | ACPI_STATUS rv; |
| 449 | uint32_t cap[2]; |
| 450 | uint32_t *ptr; |
| 451 | int i = 5; |
| 452 | |
| 453 | static uint8_t intel_uuid[16] = { |
| 454 | 0x16, 0xA6, 0x77, 0x40, 0x0C, 0x29, 0xBE, 0x47, |
| 455 | 0x9E, 0xBD, 0xD8, 0x70, 0x58, 0x71, 0x39, 0x53 |
| 456 | }; |
| 457 | |
| 458 | cap[0] = ACPI_OSC_QUERY; |
| 459 | cap[1] = flags; |
| 460 | |
| 461 | again: |
| 462 | arg.Count = 4; |
| 463 | arg.Pointer = obj; |
| 464 | |
| 465 | obj[0].Type = ACPI_TYPE_BUFFER; |
| 466 | obj[0].Buffer.Length = sizeof(intel_uuid); |
| 467 | obj[0].Buffer.Pointer = intel_uuid; |
| 468 | |
| 469 | obj[1].Type = ACPI_TYPE_INTEGER; |
| 470 | obj[1].Integer.Value = ACPICPU_PDC_REVID; |
| 471 | |
| 472 | obj[2].Type = ACPI_TYPE_INTEGER; |
| 473 | obj[2].Integer.Value = __arraycount(cap); |
| 474 | |
| 475 | obj[3].Type = ACPI_TYPE_BUFFER; |
| 476 | obj[3].Buffer.Length = sizeof(cap); |
| 477 | obj[3].Buffer.Pointer = (void *)cap; |
| 478 | |
| 479 | buf.Pointer = NULL; |
| 480 | buf.Length = ACPI_ALLOCATE_LOCAL_BUFFER; |
| 481 | |
| 482 | rv = AcpiEvaluateObject(sc->sc_node->ad_handle, "_OSC" , &arg, &buf); |
| 483 | |
| 484 | if (ACPI_FAILURE(rv)) |
| 485 | goto out; |
| 486 | |
| 487 | osc = buf.Pointer; |
| 488 | |
| 489 | if (osc->Type != ACPI_TYPE_BUFFER) { |
| 490 | rv = AE_TYPE; |
| 491 | goto out; |
| 492 | } |
| 493 | |
| 494 | if (osc->Buffer.Length != sizeof(cap)) { |
| 495 | rv = AE_BUFFER_OVERFLOW; |
| 496 | goto out; |
| 497 | } |
| 498 | |
| 499 | ptr = (uint32_t *)osc->Buffer.Pointer; |
| 500 | |
| 501 | if ((ptr[0] & ACPI_OSC_ERROR) != 0) { |
| 502 | rv = AE_ERROR; |
| 503 | goto out; |
| 504 | } |
| 505 | |
| 506 | if ((ptr[0] & (ACPI_OSC_ERROR_REV | ACPI_OSC_ERROR_UUID)) != 0) { |
| 507 | rv = AE_BAD_PARAMETER; |
| 508 | goto out; |
| 509 | } |
| 510 | |
| 511 | /* |
| 512 | * "It is strongly recommended that the OS evaluate |
| 513 | * _OSC with the Query Support Flag set until _OSC |
| 514 | * returns the Capabilities Masked bit clear, to |
| 515 | * negotiate the set of features to be granted to |
| 516 | * the OS for native support (ACPI 4.0, 6.2.10)." |
| 517 | */ |
| 518 | if ((ptr[0] & ACPI_OSC_ERROR_MASKED) != 0 && i >= 0) { |
| 519 | |
| 520 | ACPI_FREE(buf.Pointer); |
| 521 | i--; |
| 522 | |
| 523 | goto again; |
| 524 | } |
| 525 | |
| 526 | if ((cap[0] & ACPI_OSC_QUERY) != 0) { |
| 527 | |
| 528 | ACPI_FREE(buf.Pointer); |
| 529 | cap[0] &= ~ACPI_OSC_QUERY; |
| 530 | |
| 531 | goto again; |
| 532 | } |
| 533 | |
| 534 | /* |
| 535 | * It is permitted for _OSC to return all |
| 536 | * bits cleared, but this is specified to |
| 537 | * vary on per-device basis. Assume that |
| 538 | * everything rather than nothing will be |
| 539 | * supported in this case; we do not need |
| 540 | * the firmware to know the CPU features. |
| 541 | */ |
| 542 | *val = (ptr[1] != 0) ? ptr[1] : cap[1]; |
| 543 | |
| 544 | out: |
| 545 | if (buf.Pointer != NULL) |
| 546 | ACPI_FREE(buf.Pointer); |
| 547 | |
| 548 | return rv; |
| 549 | } |
| 550 | |
| 551 | static void |
| 552 | acpicpu_notify(ACPI_HANDLE hdl, uint32_t evt, void *aux) |
| 553 | { |
| 554 | ACPI_OSD_EXEC_CALLBACK func; |
| 555 | struct acpicpu_softc *sc; |
| 556 | device_t self = aux; |
| 557 | |
| 558 | sc = device_private(self); |
| 559 | |
| 560 | if (sc->sc_cold != false) |
| 561 | return; |
| 562 | |
| 563 | if (acpicpu_dynamic != true) |
| 564 | return; |
| 565 | |
| 566 | switch (evt) { |
| 567 | |
| 568 | case ACPICPU_C_NOTIFY: |
| 569 | |
| 570 | if ((sc->sc_flags & ACPICPU_FLAG_C) == 0) |
| 571 | return; |
| 572 | |
| 573 | func = acpicpu_cstate_callback; |
| 574 | break; |
| 575 | |
| 576 | case ACPICPU_P_NOTIFY: |
| 577 | |
| 578 | if ((sc->sc_flags & ACPICPU_FLAG_P) == 0) |
| 579 | return; |
| 580 | |
| 581 | func = acpicpu_pstate_callback; |
| 582 | break; |
| 583 | |
| 584 | case ACPICPU_T_NOTIFY: |
| 585 | |
| 586 | if ((sc->sc_flags & ACPICPU_FLAG_T) == 0) |
| 587 | return; |
| 588 | |
| 589 | func = acpicpu_tstate_callback; |
| 590 | break; |
| 591 | |
| 592 | default: |
| 593 | aprint_error_dev(sc->sc_dev, "unknown notify: 0x%02X\n" , evt); |
| 594 | return; |
| 595 | } |
| 596 | |
| 597 | (void)AcpiOsExecute(OSL_NOTIFY_HANDLER, func, sc->sc_dev); |
| 598 | } |
| 599 | |
| 600 | static bool |
| 601 | acpicpu_suspend(device_t self, const pmf_qual_t *qual) |
| 602 | { |
| 603 | struct acpicpu_softc *sc = device_private(self); |
| 604 | |
| 605 | if ((sc->sc_flags & ACPICPU_FLAG_C) != 0) |
| 606 | (void)acpicpu_cstate_suspend(self); |
| 607 | |
| 608 | if ((sc->sc_flags & ACPICPU_FLAG_P) != 0) |
| 609 | (void)acpicpu_pstate_suspend(self); |
| 610 | |
| 611 | if ((sc->sc_flags & ACPICPU_FLAG_T) != 0) |
| 612 | (void)acpicpu_tstate_suspend(self); |
| 613 | |
| 614 | sc->sc_cold = true; |
| 615 | |
| 616 | return true; |
| 617 | } |
| 618 | |
| 619 | static bool |
| 620 | acpicpu_resume(device_t self, const pmf_qual_t *qual) |
| 621 | { |
| 622 | struct acpicpu_softc *sc = device_private(self); |
| 623 | static const int handler = OSL_NOTIFY_HANDLER; |
| 624 | |
| 625 | sc->sc_cold = false; |
| 626 | |
| 627 | if ((sc->sc_flags & ACPICPU_FLAG_C) != 0) |
| 628 | (void)AcpiOsExecute(handler, acpicpu_cstate_resume, self); |
| 629 | |
| 630 | if ((sc->sc_flags & ACPICPU_FLAG_P) != 0) |
| 631 | (void)AcpiOsExecute(handler, acpicpu_pstate_resume, self); |
| 632 | |
| 633 | if ((sc->sc_flags & ACPICPU_FLAG_T) != 0) |
| 634 | (void)AcpiOsExecute(handler, acpicpu_tstate_resume, self); |
| 635 | |
| 636 | return true; |
| 637 | } |
| 638 | |
| 639 | static void |
| 640 | acpicpu_evcnt_attach(device_t self) |
| 641 | { |
| 642 | struct acpicpu_softc *sc = device_private(self); |
| 643 | struct acpicpu_cstate *cs; |
| 644 | struct acpicpu_pstate *ps; |
| 645 | struct acpicpu_tstate *ts; |
| 646 | const char *str; |
| 647 | uint32_t i; |
| 648 | |
| 649 | for (i = 0; i < __arraycount(sc->sc_cstate); i++) { |
| 650 | |
| 651 | cs = &sc->sc_cstate[i]; |
| 652 | |
| 653 | if (cs->cs_method == 0) |
| 654 | continue; |
| 655 | |
| 656 | str = "HALT" ; |
| 657 | |
| 658 | if (cs->cs_method == ACPICPU_C_STATE_FFH) |
| 659 | str = "MWAIT" ; |
| 660 | |
| 661 | if (cs->cs_method == ACPICPU_C_STATE_SYSIO) |
| 662 | str = "I/O" ; |
| 663 | |
| 664 | (void)snprintf(cs->cs_name, sizeof(cs->cs_name), |
| 665 | "C%d (%s)" , i, str); |
| 666 | |
| 667 | evcnt_attach_dynamic(&cs->cs_evcnt, EVCNT_TYPE_MISC, |
| 668 | NULL, device_xname(sc->sc_dev), cs->cs_name); |
| 669 | } |
| 670 | |
| 671 | for (i = 0; i < sc->sc_pstate_count; i++) { |
| 672 | |
| 673 | ps = &sc->sc_pstate[i]; |
| 674 | |
| 675 | if (ps->ps_freq == 0) |
| 676 | continue; |
| 677 | |
| 678 | (void)snprintf(ps->ps_name, sizeof(ps->ps_name), |
| 679 | "P%u (%u MHz)" , i, ps->ps_freq); |
| 680 | |
| 681 | evcnt_attach_dynamic(&ps->ps_evcnt, EVCNT_TYPE_MISC, |
| 682 | NULL, device_xname(sc->sc_dev), ps->ps_name); |
| 683 | } |
| 684 | |
| 685 | for (i = 0; i < sc->sc_tstate_count; i++) { |
| 686 | |
| 687 | ts = &sc->sc_tstate[i]; |
| 688 | |
| 689 | if (ts->ts_percent == 0) |
| 690 | continue; |
| 691 | |
| 692 | (void)snprintf(ts->ts_name, sizeof(ts->ts_name), |
| 693 | "T%u (%u %%)" , i, ts->ts_percent); |
| 694 | |
| 695 | evcnt_attach_dynamic(&ts->ts_evcnt, EVCNT_TYPE_MISC, |
| 696 | NULL, device_xname(sc->sc_dev), ts->ts_name); |
| 697 | } |
| 698 | } |
| 699 | |
| 700 | static void |
| 701 | acpicpu_evcnt_detach(device_t self) |
| 702 | { |
| 703 | struct acpicpu_softc *sc = device_private(self); |
| 704 | struct acpicpu_cstate *cs; |
| 705 | struct acpicpu_pstate *ps; |
| 706 | struct acpicpu_tstate *ts; |
| 707 | uint32_t i; |
| 708 | |
| 709 | for (i = 0; i < __arraycount(sc->sc_cstate); i++) { |
| 710 | |
| 711 | cs = &sc->sc_cstate[i]; |
| 712 | |
| 713 | if (cs->cs_method != 0) |
| 714 | evcnt_detach(&cs->cs_evcnt); |
| 715 | } |
| 716 | |
| 717 | for (i = 0; i < sc->sc_pstate_count; i++) { |
| 718 | |
| 719 | ps = &sc->sc_pstate[i]; |
| 720 | |
| 721 | if (ps->ps_freq != 0) |
| 722 | evcnt_detach(&ps->ps_evcnt); |
| 723 | } |
| 724 | |
| 725 | for (i = 0; i < sc->sc_tstate_count; i++) { |
| 726 | |
| 727 | ts = &sc->sc_tstate[i]; |
| 728 | |
| 729 | if (ts->ts_percent != 0) |
| 730 | evcnt_detach(&ts->ts_evcnt); |
| 731 | } |
| 732 | } |
| 733 | |
| 734 | static void |
| 735 | acpicpu_debug_print(device_t self) |
| 736 | { |
| 737 | struct acpicpu_softc *sc = device_private(self); |
| 738 | struct cpu_info *ci = sc->sc_ci; |
| 739 | struct acpicpu_cstate *cs; |
| 740 | struct acpicpu_pstate *ps; |
| 741 | struct acpicpu_tstate *ts; |
| 742 | static bool once = false; |
| 743 | struct acpicpu_dep *dep; |
| 744 | uint32_t i, method; |
| 745 | |
| 746 | if (once != true) { |
| 747 | |
| 748 | for (i = 0; i < __arraycount(sc->sc_cstate); i++) { |
| 749 | |
| 750 | cs = &sc->sc_cstate[i]; |
| 751 | |
| 752 | if (cs->cs_method == 0) |
| 753 | continue; |
| 754 | |
| 755 | aprint_verbose_dev(sc->sc_dev, "C%d: %3s, " |
| 756 | "lat %3u us, pow %5u mW%s\n" , i, |
| 757 | acpicpu_debug_print_method_c(cs->cs_method), |
| 758 | cs->cs_latency, cs->cs_power, |
| 759 | (cs->cs_flags != 0) ? ", bus master check" : "" ); |
| 760 | } |
| 761 | |
| 762 | method = sc->sc_pstate_control.reg_spaceid; |
| 763 | |
| 764 | for (i = 0; i < sc->sc_pstate_count; i++) { |
| 765 | |
| 766 | ps = &sc->sc_pstate[i]; |
| 767 | |
| 768 | if (ps->ps_freq == 0) |
| 769 | continue; |
| 770 | |
| 771 | aprint_verbose_dev(sc->sc_dev, "P%d: %3s, " |
| 772 | "lat %3u us, pow %5u mW, %4u MHz%s\n" , i, |
| 773 | acpicpu_debug_print_method_pt(method), |
| 774 | ps->ps_latency, ps->ps_power, ps->ps_freq, |
| 775 | (ps->ps_flags & ACPICPU_FLAG_P_TURBO) != 0 ? |
| 776 | ", turbo boost" : "" ); |
| 777 | } |
| 778 | |
| 779 | method = sc->sc_tstate_control.reg_spaceid; |
| 780 | |
| 781 | for (i = 0; i < sc->sc_tstate_count; i++) { |
| 782 | |
| 783 | ts = &sc->sc_tstate[i]; |
| 784 | |
| 785 | if (ts->ts_percent == 0) |
| 786 | continue; |
| 787 | |
| 788 | aprint_verbose_dev(sc->sc_dev, "T%u: %3s, " |
| 789 | "lat %3u us, pow %5u mW, %3u %%\n" , i, |
| 790 | acpicpu_debug_print_method_pt(method), |
| 791 | ts->ts_latency, ts->ts_power, ts->ts_percent); |
| 792 | } |
| 793 | |
| 794 | once = true; |
| 795 | } |
| 796 | |
| 797 | aprint_debug_dev(sc->sc_dev, "id %u, lapic id %u, " |
| 798 | "cap 0x%04x, flags 0x%08x\n" , ci->ci_acpiid, |
| 799 | (uint32_t)ci->ci_cpuid, sc->sc_cap, sc->sc_flags); |
| 800 | |
| 801 | if ((sc->sc_flags & ACPICPU_FLAG_C_DEP) != 0) { |
| 802 | |
| 803 | dep = &sc->sc_cstate_dep; |
| 804 | |
| 805 | aprint_debug_dev(sc->sc_dev, "C-state coordination: " |
| 806 | "%u CPUs, domain %u, type %s\n" , dep->dep_ncpus, |
| 807 | dep->dep_domain, acpicpu_debug_print_dep(dep->dep_type)); |
| 808 | } |
| 809 | |
| 810 | if ((sc->sc_flags & ACPICPU_FLAG_P_DEP) != 0) { |
| 811 | |
| 812 | dep = &sc->sc_pstate_dep; |
| 813 | |
| 814 | aprint_debug_dev(sc->sc_dev, "P-state coordination: " |
| 815 | "%u CPUs, domain %u, type %s\n" , dep->dep_ncpus, |
| 816 | dep->dep_domain, acpicpu_debug_print_dep(dep->dep_type)); |
| 817 | } |
| 818 | |
| 819 | if ((sc->sc_flags & ACPICPU_FLAG_T_DEP) != 0) { |
| 820 | |
| 821 | dep = &sc->sc_tstate_dep; |
| 822 | |
| 823 | aprint_debug_dev(sc->sc_dev, "T-state coordination: " |
| 824 | "%u CPUs, domain %u, type %s\n" , dep->dep_ncpus, |
| 825 | dep->dep_domain, acpicpu_debug_print_dep(dep->dep_type)); |
| 826 | } |
| 827 | } |
| 828 | |
| 829 | static const char * |
| 830 | acpicpu_debug_print_method_c(uint8_t val) |
| 831 | { |
| 832 | |
| 833 | if (val == ACPICPU_C_STATE_FFH) |
| 834 | return "FFH" ; |
| 835 | |
| 836 | if (val == ACPICPU_C_STATE_HALT) |
| 837 | return "HLT" ; |
| 838 | |
| 839 | if (val == ACPICPU_C_STATE_SYSIO) |
| 840 | return "I/O" ; |
| 841 | |
| 842 | return "???" ; |
| 843 | } |
| 844 | |
| 845 | static const char * |
| 846 | acpicpu_debug_print_method_pt(uint8_t val) |
| 847 | { |
| 848 | |
| 849 | if (val == ACPI_ADR_SPACE_SYSTEM_IO) |
| 850 | return "I/O" ; |
| 851 | |
| 852 | if (val == ACPI_ADR_SPACE_FIXED_HARDWARE) |
| 853 | return "FFH" ; |
| 854 | |
| 855 | return "???" ; |
| 856 | } |
| 857 | |
| 858 | static const char * |
| 859 | acpicpu_debug_print_dep(uint32_t val) |
| 860 | { |
| 861 | |
| 862 | switch (val) { |
| 863 | |
| 864 | case ACPICPU_DEP_SW_ALL: |
| 865 | return "SW_ALL" ; |
| 866 | |
| 867 | case ACPICPU_DEP_SW_ANY: |
| 868 | return "SW_ANY" ; |
| 869 | |
| 870 | case ACPICPU_DEP_HW_ALL: |
| 871 | return "HW_ALL" ; |
| 872 | |
| 873 | default: |
| 874 | return "unknown" ; |
| 875 | } |
| 876 | } |
| 877 | |
| 878 | MODULE(MODULE_CLASS_DRIVER, acpicpu, NULL); |
| 879 | |
| 880 | #ifdef _MODULE |
| 881 | #include "ioconf.c" |
| 882 | #endif |
| 883 | |
| 884 | static int |
| 885 | acpicpu_modcmd(modcmd_t cmd, void *aux) |
| 886 | { |
| 887 | int rv = 0; |
| 888 | |
| 889 | switch (cmd) { |
| 890 | |
| 891 | case MODULE_CMD_INIT: |
| 892 | |
| 893 | #ifdef _MODULE |
| 894 | rv = config_init_component(cfdriver_ioconf_acpicpu, |
| 895 | cfattach_ioconf_acpicpu, cfdata_ioconf_acpicpu); |
| 896 | #endif |
| 897 | break; |
| 898 | |
| 899 | case MODULE_CMD_FINI: |
| 900 | |
| 901 | #ifdef _MODULE |
| 902 | rv = config_fini_component(cfdriver_ioconf_acpicpu, |
| 903 | cfattach_ioconf_acpicpu, cfdata_ioconf_acpicpu); |
| 904 | #endif |
| 905 | break; |
| 906 | |
| 907 | default: |
| 908 | rv = ENOTTY; |
| 909 | } |
| 910 | |
| 911 | return rv; |
| 912 | } |
| 913 | |