amdtemp.c revision 1.18.6.2
1 /* $NetBSD: amdtemp.c,v 1.18.6.2 2017/08/28 17:51:56 skrll Exp $ */ 2 /* $OpenBSD: kate.c,v 1.2 2008/03/27 04:52:03 cnst Exp $ */ 3 4 /* 5 * Copyright (c) 2008 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Christoph Egger. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright (c) 2008 Constantine A. Murenin <cnst+openbsd (at) bugmail.mojo.ru> 35 * 36 * Permission to use, copy, modify, and distribute this software for any 37 * purpose with or without fee is hereby granted, provided that the above 38 * copyright notice and this permission notice appear in all copies. 39 * 40 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 41 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 42 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 43 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 44 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 45 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 46 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 47 */ 48 49 50 #include <sys/cdefs.h> 51 __KERNEL_RCSID(0, "$NetBSD: amdtemp.c,v 1.18.6.2 2017/08/28 17:51:56 skrll Exp $ "); 52 53 #include <sys/param.h> 54 #include <sys/bus.h> 55 #include <sys/cpu.h> 56 #include <sys/systm.h> 57 #include <sys/device.h> 58 #include <sys/kmem.h> 59 #include <sys/module.h> 60 61 #include <machine/specialreg.h> 62 63 #include <dev/pci/pcireg.h> 64 #include <dev/pci/pcivar.h> 65 #include <dev/pci/pcidevs.h> 66 67 #include <dev/sysmon/sysmonvar.h> 68 69 /* 70 * AMD K8: 71 * http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/32559.pdf 72 * AMD K8 Errata: #141 73 * http://support.amd.com/us/Processor_TechDocs/33610_PUB_Rev3%2042v3.pdf 74 * 75 * Family10h: 76 * http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/31116.PDF 77 * Family10h Errata: #319 78 * http://support.amd.com/de/Processor_TechDocs/41322.pdf 79 * 80 * Family11h: 81 * http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/41256.pdf 82 */ 83 84 /* AMD Processors, Function 3 -- Miscellaneous Control 85 */ 86 87 /* Function 3 Registers */ 88 #define THERMTRIP_STAT_R 0xe4 89 #define NORTHBRIDGE_CAP_R 0xe8 90 #define CPUID_FAMILY_MODEL_R 0xfc 91 92 /* 93 * AMD NPT Family 0Fh Processors, Function 3 -- Miscellaneous Control 94 */ 95 96 /* Bits within Thermtrip Status Register */ 97 #define K8_THERM_SENSE_SEL (1 << 6) 98 #define K8_THERM_SENSE_CORE_SEL (1 << 2) 99 100 /* Flip core and sensor selection bits */ 101 #define K8_T_SEL_C0(v) (v |= K8_THERM_SENSE_CORE_SEL) 102 #define K8_T_SEL_C1(v) (v &= ~(K8_THERM_SENSE_CORE_SEL)) 103 #define K8_T_SEL_S0(v) (v &= ~(K8_THERM_SENSE_SEL)) 104 #define K8_T_SEL_S1(v) (v |= K8_THERM_SENSE_SEL) 105 106 107 108 /* 109 * AMD Family 10h Processors, Function 3 -- Miscellaneous Control 110 */ 111 112 /* Function 3 Registers */ 113 #define F10_TEMPERATURE_CTL_R 0xa4 114 115 /* Bits within Reported Temperature Control Register */ 116 #define F10_TEMP_CURTEMP (1 << 21) 117 118 /* 119 * Revision Guide for AMD NPT Family 0Fh Processors, 120 * Publication # 33610, Revision 3.30, February 2008 121 */ 122 #define K8_SOCKET_F 1 /* Server */ 123 #define K8_SOCKET_AM2 2 /* Desktop */ 124 #define K8_SOCKET_S1 3 /* Laptop */ 125 126 static const struct { 127 const char rev[5]; 128 const struct { 129 const pcireg_t cpuid; 130 const uint8_t socket; 131 } cpu[5]; 132 } amdtemp_core[] = { 133 { "BH-F", { { 0x00040FB0, K8_SOCKET_AM2 }, /* F2 */ 134 { 0x00040F80, K8_SOCKET_S1 }, /* F2 */ 135 { 0, 0 }, { 0, 0 }, { 0, 0 } } }, 136 { "DH-F", { { 0x00040FF0, K8_SOCKET_AM2 }, /* F2 */ 137 { 0x00040FC0, K8_SOCKET_S1 }, /* F2 */ 138 { 0x00050FF0, K8_SOCKET_AM2 }, /* F2, F3 */ 139 { 0, 0 }, { 0, 0 } } }, 140 { "JH-F", { { 0x00040F10, K8_SOCKET_F }, /* F2, F3 */ 141 { 0x00040F30, K8_SOCKET_AM2 }, /* F2, F3 */ 142 { 0x000C0F10, K8_SOCKET_F }, /* F3 */ 143 { 0, 0 }, { 0, 0 } } }, 144 { "BH-G", { { 0x00060FB0, K8_SOCKET_AM2 }, /* G1, G2 */ 145 { 0x00060F80, K8_SOCKET_S1 }, /* G1, G2 */ 146 { 0, 0 }, { 0, 0 }, { 0, 0 } } }, 147 { "DH-G", { { 0x00060FF0, K8_SOCKET_AM2 }, /* G1, G2 */ 148 { 0x00060FC0, K8_SOCKET_S1 }, /* G2 */ 149 { 0x00070FF0, K8_SOCKET_AM2 }, /* G1, G2 */ 150 { 0x00070FC0, K8_SOCKET_S1 }, /* G2 */ 151 { 0, 0 } } } 152 }; 153 154 155 struct amdtemp_softc { 156 pci_chipset_tag_t sc_pc; 157 pcitag_t sc_pcitag; 158 159 struct sysmon_envsys *sc_sme; 160 envsys_data_t *sc_sensor; 161 size_t sc_sensor_len; 162 163 char sc_rev; 164 int8_t sc_numsensors; 165 uint32_t sc_family; 166 int32_t sc_adjustment; 167 }; 168 169 170 static int amdtemp_match(device_t, cfdata_t, void *); 171 static void amdtemp_attach(device_t, device_t, void *); 172 static int amdtemp_detach(device_t, int); 173 174 static void amdtemp_k8_init(struct amdtemp_softc *, pcireg_t); 175 static void amdtemp_k8_setup_sensors(struct amdtemp_softc *, int); 176 static void amdtemp_k8_refresh(struct sysmon_envsys *, envsys_data_t *); 177 178 static void amdtemp_family10_init(struct amdtemp_softc *); 179 static void amdtemp_family10_setup_sensors(struct amdtemp_softc *, int); 180 static void amdtemp_family10_refresh(struct sysmon_envsys *, envsys_data_t *); 181 182 CFATTACH_DECL_NEW(amdtemp, sizeof(struct amdtemp_softc), 183 amdtemp_match, amdtemp_attach, amdtemp_detach, NULL); 184 185 static int 186 amdtemp_match(device_t parent, cfdata_t match, void *aux) 187 { 188 struct pci_attach_args *pa = aux; 189 pcireg_t cpu_signature; 190 uint32_t family; 191 192 KASSERT(PCI_VENDOR(pa->pa_id) == PCI_VENDOR_AMD); 193 194 cpu_signature = pci_conf_read(pa->pa_pc, 195 pa->pa_tag, CPUID_FAMILY_MODEL_R); 196 197 /* This CPUID northbridge register has been introduced 198 * in Revision F */ 199 if (cpu_signature == 0x0) 200 return 0; 201 202 family = CPUID_TO_FAMILY(cpu_signature); 203 204 /* Errata #319: This has been fixed in Revision C2. */ 205 if (family == 0x10) { 206 if (CPUID_TO_BASEMODEL(cpu_signature) < 4) 207 return 0; 208 if (CPUID_TO_BASEMODEL(cpu_signature) == 4 209 && CPUID_TO_STEPPING(cpu_signature) < 2) 210 return 0; 211 } 212 213 214 /* Not yet supported CPUs */ 215 if (family > 0x15) 216 return 0; 217 218 return 1; 219 } 220 221 static void 222 amdtemp_attach(device_t parent, device_t self, void *aux) 223 { 224 struct amdtemp_softc *sc = device_private(self); 225 struct pci_attach_args *pa = aux; 226 pcireg_t cpu_signature; 227 int error; 228 uint8_t i; 229 230 aprint_naive("\n"); 231 aprint_normal(": AMD CPU Temperature Sensors"); 232 233 cpu_signature = pci_conf_read(pa->pa_pc, 234 pa->pa_tag, CPUID_FAMILY_MODEL_R); 235 236 /* If we hit this, then match routine is wrong. */ 237 KASSERT(cpu_signature != 0x0); 238 239 sc->sc_family = CPUID_TO_FAMILY(cpu_signature); 240 241 KASSERT(sc->sc_family >= 0xf); 242 243 sc->sc_sme = NULL; 244 sc->sc_sensor = NULL; 245 246 sc->sc_pc = pa->pa_pc; 247 sc->sc_pcitag = pa->pa_tag; 248 sc->sc_adjustment = 0; 249 250 switch (sc->sc_family) { 251 case 0xf: /* AMD K8 NPT */ 252 amdtemp_k8_init(sc, cpu_signature); 253 break; 254 255 case 0x10: /* AMD Barcelona/Phenom */ 256 case 0x11: /* AMD Griffin */ 257 case 0x12: /* AMD Lynx/Sabine (Llano) */ 258 case 0x14: /* AMD Brazos (Ontario/Zacate/Desna) */ 259 case 0x15: 260 amdtemp_family10_init(sc); 261 break; 262 263 default: 264 aprint_normal(", family 0x%x not supported\n", 265 sc->sc_family); 266 return; 267 } 268 269 aprint_normal("\n"); 270 271 if (sc->sc_adjustment != 0) 272 aprint_debug_dev(self, "Workaround enabled\n"); 273 274 sc->sc_sme = sysmon_envsys_create(); 275 sc->sc_sensor_len = sizeof(envsys_data_t) * sc->sc_numsensors; 276 sc->sc_sensor = kmem_zalloc(sc->sc_sensor_len, KM_SLEEP); 277 278 switch (sc->sc_family) { 279 case 0xf: 280 amdtemp_k8_setup_sensors(sc, device_unit(self)); 281 break; 282 case 0x10: 283 case 0x11: 284 case 0x12: 285 case 0x14: 286 case 0x15: 287 amdtemp_family10_setup_sensors(sc, device_unit(self)); 288 break; 289 } 290 291 /* 292 * Set properties in sensors. 293 */ 294 for (i = 0; i < sc->sc_numsensors; i++) { 295 if (sysmon_envsys_sensor_attach(sc->sc_sme, 296 &sc->sc_sensor[i])) 297 goto bad; 298 } 299 300 /* 301 * Register the sysmon_envsys device. 302 */ 303 sc->sc_sme->sme_name = device_xname(self); 304 sc->sc_sme->sme_cookie = sc; 305 306 switch (sc->sc_family) { 307 case 0xf: 308 sc->sc_sme->sme_refresh = amdtemp_k8_refresh; 309 break; 310 case 0x10: 311 case 0x11: 312 case 0x12: 313 case 0x14: 314 case 0x15: 315 sc->sc_sme->sme_refresh = amdtemp_family10_refresh; 316 break; 317 } 318 319 error = sysmon_envsys_register(sc->sc_sme); 320 if (error) { 321 aprint_error_dev(self, "unable to register with sysmon " 322 "(error=%d)\n", error); 323 goto bad; 324 } 325 326 (void)pmf_device_register(self, NULL, NULL); 327 328 return; 329 330 bad: 331 if (sc->sc_sme != NULL) { 332 sysmon_envsys_destroy(sc->sc_sme); 333 sc->sc_sme = NULL; 334 } 335 336 if (sc->sc_sensor != NULL) { 337 kmem_free(sc->sc_sensor, sc->sc_sensor_len); 338 sc->sc_sensor = NULL; 339 } 340 } 341 342 static int 343 amdtemp_detach(device_t self, int flags) 344 { 345 struct amdtemp_softc *sc = device_private(self); 346 347 pmf_device_deregister(self); 348 if (sc->sc_sme != NULL) 349 sysmon_envsys_unregister(sc->sc_sme); 350 351 if (sc->sc_sensor != NULL) 352 kmem_free(sc->sc_sensor, sc->sc_sensor_len); 353 354 return 0; 355 } 356 357 static void 358 amdtemp_k8_init(struct amdtemp_softc *sc, pcireg_t cpu_signature) 359 { 360 pcireg_t data; 361 uint32_t cmpcap; 362 uint8_t i, j; 363 364 aprint_normal(" (K8"); 365 366 for (i = 0; i < __arraycount(amdtemp_core) && sc->sc_rev == '\0'; i++) { 367 for (j = 0; amdtemp_core[i].cpu[j].cpuid != 0; j++) { 368 if ((cpu_signature & ~0xf) 369 != amdtemp_core[i].cpu[j].cpuid) 370 continue; 371 372 sc->sc_rev = amdtemp_core[i].rev[3]; 373 aprint_normal(": core rev %.4s%.1x", 374 amdtemp_core[i].rev, 375 CPUID_TO_STEPPING(cpu_signature)); 376 377 switch (amdtemp_core[i].cpu[j].socket) { 378 case K8_SOCKET_AM2: 379 if (sc->sc_rev == 'G') 380 sc->sc_adjustment = 21000000; 381 aprint_normal(", socket AM2"); 382 break; 383 case K8_SOCKET_S1: 384 aprint_normal(", socket S1"); 385 break; 386 case K8_SOCKET_F: 387 aprint_normal(", socket F"); 388 break; 389 } 390 } 391 } 392 393 if (sc->sc_rev == '\0') { 394 /* CPUID Family Model Register was introduced in 395 * Revision F */ 396 sc->sc_rev = 'G'; /* newer than E, assume G */ 397 aprint_normal(": cpuid 0x%x", cpu_signature); 398 } 399 400 aprint_normal(")"); 401 402 data = pci_conf_read(sc->sc_pc, sc->sc_pcitag, NORTHBRIDGE_CAP_R); 403 cmpcap = (data >> 12) & 0x3; 404 405 sc->sc_numsensors = cmpcap ? 4 : 2; 406 } 407 408 409 static void 410 amdtemp_k8_setup_sensors(struct amdtemp_softc *sc, int dv_unit) 411 { 412 uint8_t i; 413 414 /* There are two sensors per CPU core. So we use the 415 * device unit as socket counter to correctly enumerate 416 * the CPUs on multi-socket machines. 417 */ 418 dv_unit *= (sc->sc_numsensors / 2); 419 for (i = 0; i < sc->sc_numsensors; i++) { 420 sc->sc_sensor[i].units = ENVSYS_STEMP; 421 sc->sc_sensor[i].state = ENVSYS_SVALID; 422 sc->sc_sensor[i].flags = ENVSYS_FHAS_ENTROPY; 423 424 snprintf(sc->sc_sensor[i].desc, sizeof(sc->sc_sensor[i].desc), 425 "CPU%u Sensor%u", dv_unit + (i / 2), i % 2); 426 } 427 } 428 429 430 static void 431 amdtemp_k8_refresh(struct sysmon_envsys *sme, envsys_data_t *edata) 432 { 433 struct amdtemp_softc *sc = sme->sme_cookie; 434 pcireg_t status, match, tmp; 435 uint32_t value; 436 437 status = pci_conf_read(sc->sc_pc, sc->sc_pcitag, THERMTRIP_STAT_R); 438 439 switch(edata->sensor) { /* sensor number */ 440 case 0: /* Core 0 Sensor 0 */ 441 K8_T_SEL_C0(status); 442 K8_T_SEL_S0(status); 443 break; 444 case 1: /* Core 0 Sensor 1 */ 445 K8_T_SEL_C0(status); 446 K8_T_SEL_S1(status); 447 break; 448 case 2: /* Core 1 Sensor 0 */ 449 K8_T_SEL_C1(status); 450 K8_T_SEL_S0(status); 451 break; 452 case 3: /* Core 1 Sensor 1 */ 453 K8_T_SEL_C1(status); 454 K8_T_SEL_S1(status); 455 break; 456 } 457 458 match = status & (K8_THERM_SENSE_CORE_SEL | K8_THERM_SENSE_SEL); 459 pci_conf_write(sc->sc_pc, sc->sc_pcitag, THERMTRIP_STAT_R, status); 460 status = pci_conf_read(sc->sc_pc, sc->sc_pcitag, THERMTRIP_STAT_R); 461 tmp = status & (K8_THERM_SENSE_CORE_SEL | K8_THERM_SENSE_SEL); 462 463 value = 0x3ff & (status >> 14); 464 if (sc->sc_rev != 'G') 465 value &= ~0x3; 466 467 edata->state = ENVSYS_SINVALID; 468 if ((tmp == match) && ((value & ~0x3) != 0)) { 469 edata->state = ENVSYS_SVALID; 470 edata->value_cur = (value * 250000 - 49000000) + 273150000 471 + sc->sc_adjustment; 472 } 473 } 474 475 476 static void 477 amdtemp_family10_init(struct amdtemp_softc *sc) 478 { 479 aprint_normal(" (Family%02xh)", sc->sc_family); 480 481 sc->sc_numsensors = 1; 482 } 483 484 static void 485 amdtemp_family10_setup_sensors(struct amdtemp_softc *sc, int dv_unit) 486 { 487 /* sanity check for future enhancements */ 488 KASSERT(sc->sc_numsensors == 1); 489 490 /* There's one sensor per memory controller (= socket) 491 * so we use the device unit as socket counter 492 * to correctly enumerate the CPUs 493 */ 494 sc->sc_sensor[0].units = ENVSYS_STEMP; 495 sc->sc_sensor[0].state = ENVSYS_SVALID; 496 sc->sc_sensor[0].flags = ENVSYS_FHAS_ENTROPY; 497 498 snprintf(sc->sc_sensor[0].desc, sizeof(sc->sc_sensor[0].desc), 499 "cpu%u temperature", dv_unit); 500 } 501 502 503 static void 504 amdtemp_family10_refresh(struct sysmon_envsys *sme, envsys_data_t *edata) 505 { 506 struct amdtemp_softc *sc = sme->sme_cookie; 507 pcireg_t status; 508 uint32_t value; 509 510 status = pci_conf_read(sc->sc_pc, 511 sc->sc_pcitag, F10_TEMPERATURE_CTL_R); 512 513 value = (status >> 21); 514 515 edata->state = ENVSYS_SVALID; 516 edata->value_cur = (value * 125000) + 273150000; /* From C to uK. */ 517 } 518 519 MODULE(MODULE_CLASS_DRIVER, amdtemp, "sysmon_envsys"); 520 521 #ifdef _MODULE 522 #include "ioconf.c" 523 #endif 524 525 static int 526 amdtemp_modcmd(modcmd_t cmd, void *aux) 527 { 528 int error = 0; 529 530 switch (cmd) { 531 case MODULE_CMD_INIT: 532 #ifdef _MODULE 533 error = config_init_component(cfdriver_ioconf_amdtemp, 534 cfattach_ioconf_amdtemp, cfdata_ioconf_amdtemp); 535 #endif 536 return error; 537 case MODULE_CMD_FINI: 538 #ifdef _MODULE 539 error = config_fini_component(cfdriver_ioconf_amdtemp, 540 cfattach_ioconf_amdtemp, cfdata_ioconf_amdtemp); 541 #endif 542 return error; 543 default: 544 return ENOTTY; 545 } 546 } 547
Indexes created Thu Oct 02 14:10:14 GMT 2025