itesio_isa.c revision 1.6
1 /* $NetBSD: itesio_isa.c,v 1.6 2007/12/01 23:40:28 jmcneill Exp $ */ 2 /* Derived from $OpenBSD: it.c,v 1.19 2006/04/10 00:57:54 deraadt Exp $ */ 3 4 /* 5 * Copyright (c) 2006-2007 Juan Romero Pardines <juan (at) xtrarom.org> 6 * Copyright (c) 2003 Julien Bordet <zejames (at) greyhats.org> 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITD TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITD TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 /* 31 * Driver for the iTE IT87xxF Super I/O. Currently supporting 32 * the Hardware monitor part in the Environmental Controller. 33 */ 34 35 #include <sys/cdefs.h> 36 __KERNEL_RCSID(0, "$NetBSD: itesio_isa.c,v 1.6 2007/12/01 23:40:28 jmcneill Exp $"); 37 38 #include <sys/param.h> 39 #include <sys/kernel.h> 40 #include <sys/device.h> 41 42 #include <sys/bus.h> 43 44 #include <dev/isa/isareg.h> 45 #include <dev/isa/isavar.h> 46 47 #include <dev/sysmon/sysmonvar.h> 48 49 #include <dev/isa/itesio_isavar.h> 50 51 #define IT_VOLTSTART_IDX 3 /* voltage start index */ 52 #define IT_FANSTART_IDX 12 /* fan start index */ 53 54 #if defined(ITESIO_DEBUG) 55 #define DPRINTF(x) do { printf x; } while (0) 56 #else 57 #define DPRINTF(x) 58 #endif 59 60 /* 61 * IT87-compatible chips can typically measure voltages up to 4.096 V. 62 * To measure higher voltages the input is attenuated with (external) 63 * resistors. Negative voltages are measured using a reference 64 * voltage. So we have to convert the sensor values back to real 65 * voltages by applying the appropriate resistor factor. 66 */ 67 #define RFACT_NONE 10000 68 #define RFACT(x, y) (RFACT_NONE * ((x) + (y)) / (y)) 69 70 /* autoconf(9) functions */ 71 static int itesio_isa_match(device_t, struct cfdata *, void *); 72 static void itesio_isa_attach(device_t, device_t, void *); 73 static int itesio_isa_detach(device_t, int); 74 75 CFATTACH_DECL_NEW(itesio, sizeof(struct itesio_softc), 76 itesio_isa_match, itesio_isa_attach, itesio_isa_detach, NULL); 77 78 /* driver functions */ 79 static uint8_t itesio_ecreadreg(struct itesio_softc *, int); 80 static void itesio_ecwritereg(struct itesio_softc *, int, int); 81 static uint8_t itesio_readreg(bus_space_tag_t, bus_space_handle_t, int); 82 static void itesio_writereg(bus_space_tag_t, bus_space_handle_t, int, int); 83 static void itesio_enter(bus_space_tag_t, bus_space_handle_t); 84 static void itesio_exit(bus_space_tag_t, bus_space_handle_t); 85 86 /* envsys(9) glue */ 87 static void itesio_setup_sensors(struct itesio_softc *); 88 static void itesio_refresh_temp(struct itesio_softc *, envsys_data_t *); 89 static void itesio_refresh_volts(struct itesio_softc *, envsys_data_t *); 90 static void itesio_refresh_fans(struct itesio_softc *, envsys_data_t *); 91 static void itesio_refresh(struct sysmon_envsys *, envsys_data_t *); 92 93 /* rfact values for voltage sensors */ 94 static const int itesio_vrfact[] = { 95 RFACT_NONE, /* VCORE_A */ 96 RFACT_NONE, /* VCORE_B */ 97 RFACT_NONE, /* +3.3V */ 98 RFACT(68, 100), /* +5V */ 99 RFACT(30, 10), /* +12V */ 100 RFACT(21, 10), /* -12V */ 101 RFACT(83, 20), /* -5V */ 102 RFACT(68, 100), /* STANDBY */ 103 RFACT_NONE /* VBAT */ 104 }; 105 106 static int 107 itesio_isa_match(device_t parent, struct cfdata *match, void *aux) 108 { 109 struct isa_attach_args *ia = aux; 110 bus_space_handle_t ioh; 111 uint16_t cr; 112 113 /* Must supply an address */ 114 if (ia->ia_nio < 1) 115 return 0; 116 117 if (ISA_DIRECT_CONFIG(ia)) 118 return 0; 119 120 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 121 return 0; 122 123 if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, 2, 0, &ioh)) 124 return 0; 125 126 itesio_enter(ia->ia_iot, ioh); 127 cr = (itesio_readreg(ia->ia_iot, ioh, ITESIO_CHIPID1) << 8); 128 cr |= itesio_readreg(ia->ia_iot, ioh, ITESIO_CHIPID2); 129 itesio_exit(ia->ia_iot, ioh); 130 bus_space_unmap(ia->ia_iot, ioh, 2); 131 132 switch (cr) { 133 case ITESIO_ID8705: 134 case ITESIO_ID8712: 135 case ITESIO_ID8716: 136 case ITESIO_ID8718: 137 ia->ia_nio = 1; 138 ia->ia_io[0].ir_size = 2; 139 ia->ia_niomem = 0; 140 ia->ia_nirq = 0; 141 ia->ia_ndrq = 0; 142 return 1; 143 default: 144 return 0; 145 } 146 } 147 148 static void 149 itesio_isa_attach(device_t parent, device_t self, void *aux) 150 { 151 struct itesio_softc *sc = device_private(self); 152 struct isa_attach_args *ia = aux; 153 bus_space_handle_t ioh; 154 int i; 155 uint8_t cr; 156 157 ia->ia_iot = sc->sc_iot; 158 159 if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, 2, 0, &ioh)) { 160 aprint_error(": can't map i/o space\n"); 161 return; 162 } 163 164 aprint_naive("\n"); 165 166 /* 167 * Enter to the Super I/O MB PNP mode. 168 */ 169 itesio_enter(ia->ia_iot, ioh); 170 /* 171 * Get info from the Super I/O Global Configuration Registers: 172 * Chip IDs and Device Revision. 173 */ 174 sc->sc_chipid = (itesio_readreg(ia->ia_iot, ioh, ITESIO_CHIPID1) << 8); 175 sc->sc_chipid |= itesio_readreg(ia->ia_iot, ioh, ITESIO_CHIPID2); 176 sc->sc_devrev = (itesio_readreg(ia->ia_iot, ioh, ITESIO_DEVREV) & 0x0f); 177 /* 178 * Select the EC LDN to get the Base Address. 179 */ 180 itesio_writereg(ia->ia_iot, ioh, ITESIO_LDNSEL, ITESIO_EC_LDN); 181 sc->sc_hwmon_baseaddr = 182 (itesio_readreg(ia->ia_iot, ioh, ITESIO_EC_MSB) << 8); 183 sc->sc_hwmon_baseaddr |= itesio_readreg(ia->ia_iot, ioh, ITESIO_EC_LSB); 184 /* 185 * We are done, exit MB PNP mode and unmap I/O space. 186 */ 187 itesio_exit(ia->ia_iot, ioh); 188 bus_space_unmap(sc->sc_iot, ioh, 2); 189 190 aprint_normal(": iTE IT%4xF Super I/O (rev %d)\n", 191 sc->sc_chipid, sc->sc_devrev); 192 aprint_normal_dev(self, "Hardware Monitor registers at 0x%x\n", 193 sc->sc_hwmon_baseaddr); 194 195 if (bus_space_map(sc->sc_iot, sc->sc_hwmon_baseaddr, 8, 0, 196 &sc->sc_ioh)) { 197 aprint_error_dev(self, "cannot map hwmon i/o space\n"); 198 return; 199 } 200 201 sc->sc_hwmon_mapped = true; 202 203 /* Activate monitoring */ 204 cr = itesio_ecreadreg(sc, ITESIO_EC_CONFIG); 205 SET(cr, 0x01); 206 itesio_ecwritereg(sc, ITESIO_EC_CONFIG, cr); 207 208 #ifdef notyet 209 /* Enable beep alarms */ 210 cr = itesio_ecreadreg(sc, ITESIO_EC_BEEPEER); 211 SET(cr, 0x02); /* Voltage exceeds limit */ 212 SET(cr, 0x04); /* Temperature exceeds limit */ 213 itesio_ecwritereg(sc, ITESIO_EC_BEEPEER, cr); 214 #endif 215 216 /* 217 * Initialize and attach sensors. 218 */ 219 itesio_setup_sensors(sc); 220 sc->sc_sme = sysmon_envsys_create(); 221 for (i = 0; i < IT_NUM_SENSORS; i++) { 222 if (sysmon_envsys_sensor_attach(sc->sc_sme, 223 &sc->sc_sensor[i])) { 224 sysmon_envsys_destroy(sc->sc_sme); 225 return; 226 } 227 } 228 /* 229 * Hook into the system monitor. 230 */ 231 sc->sc_sme->sme_name = device_xname(self); 232 sc->sc_sme->sme_cookie = sc; 233 sc->sc_sme->sme_refresh = itesio_refresh; 234 235 if ((i = sysmon_envsys_register(sc->sc_sme))) { 236 aprint_error_dev(self, 237 "unable to register with sysmon (%d)\n", i); 238 sysmon_envsys_destroy(sc->sc_sme); 239 bus_space_unmap(sc->sc_iot, sc->sc_ioh, 8); 240 return; 241 } 242 sc->sc_hwmon_enabled = true; 243 } 244 245 static int 246 itesio_isa_detach(device_t self, int flags) 247 { 248 struct itesio_softc *sc = device_private(self); 249 250 if (sc->sc_hwmon_enabled) 251 sysmon_envsys_unregister(sc->sc_sme); 252 if (sc->sc_hwmon_mapped) 253 bus_space_unmap(sc->sc_iot, sc->sc_ioh, 8); 254 return 0; 255 } 256 257 /* 258 * Functions to read/write to the Environmental Controller. 259 */ 260 static uint8_t 261 itesio_ecreadreg(struct itesio_softc *sc, int reg) 262 { 263 bus_space_write_1(sc->sc_iot, sc->sc_ioh, ITESIO_EC_ADDR, reg); 264 return bus_space_read_1(sc->sc_iot, sc->sc_ioh, ITESIO_EC_DATA); 265 } 266 267 static void 268 itesio_ecwritereg(struct itesio_softc *sc, int reg, int val) 269 { 270 bus_space_write_1(sc->sc_iot, sc->sc_ioh, ITESIO_EC_ADDR, reg); 271 bus_space_write_1(sc->sc_iot, sc->sc_ioh, ITESIO_EC_DATA, val); 272 } 273 274 /* 275 * Functions to enter/exit/read/write to the Super I/O. 276 */ 277 static uint8_t 278 itesio_readreg(bus_space_tag_t iot, bus_space_handle_t ioh, int reg) 279 { 280 bus_space_write_1(iot, ioh, ITESIO_ADDR, reg); 281 return bus_space_read_1(iot, ioh, ITESIO_DATA); 282 } 283 284 static void 285 itesio_writereg(bus_space_tag_t iot, bus_space_handle_t ioh, int reg, int val) 286 { 287 bus_space_write_1(iot, ioh, ITESIO_ADDR, reg); 288 bus_space_write_1(iot, ioh, ITESIO_DATA, val); 289 } 290 291 static void 292 itesio_enter(bus_space_tag_t iot, bus_space_handle_t ioh) 293 { 294 bus_space_write_1(iot, ioh, ITESIO_ADDR, 0x87); 295 bus_space_write_1(iot, ioh, ITESIO_ADDR, 0x01); 296 bus_space_write_1(iot, ioh, ITESIO_ADDR, 0x55); 297 bus_space_write_1(iot, ioh, ITESIO_ADDR, 0x55); 298 } 299 300 static void 301 itesio_exit(bus_space_tag_t iot, bus_space_handle_t ioh) 302 { 303 bus_space_write_1(iot, ioh, ITESIO_ADDR, 0x02); 304 bus_space_write_1(iot, ioh, ITESIO_DATA, 0x02); 305 } 306 307 308 #define COPYDESCR(x, y) \ 309 do { \ 310 strlcpy((x), (y), sizeof(x)); \ 311 } while (0) 312 /* 313 * sysmon_envsys(9) glue. 314 */ 315 static void 316 itesio_setup_sensors(struct itesio_softc *sc) 317 { 318 int i; 319 320 /* temperatures */ 321 for (i = 0; i < IT_VOLTSTART_IDX; i++) 322 sc->sc_sensor[i].units = ENVSYS_STEMP; 323 324 COPYDESCR(sc->sc_sensor[0].desc, "CPU Temp"); 325 COPYDESCR(sc->sc_sensor[1].desc, "System Temp"); 326 COPYDESCR(sc->sc_sensor[2].desc, "Aux Temp"); 327 328 /* voltages */ 329 for (i = IT_VOLTSTART_IDX; i < IT_FANSTART_IDX; i++) { 330 sc->sc_sensor[i].units = ENVSYS_SVOLTS_DC; 331 sc->sc_sensor[i].flags = ENVSYS_FCHANGERFACT; 332 } 333 334 COPYDESCR(sc->sc_sensor[3].desc, "VCORE_A"); 335 COPYDESCR(sc->sc_sensor[4].desc, "VCORE_B"); 336 COPYDESCR(sc->sc_sensor[5].desc, "+3.3V"); 337 COPYDESCR(sc->sc_sensor[6].desc, "+5V"); 338 COPYDESCR(sc->sc_sensor[7].desc, "+12V"); 339 COPYDESCR(sc->sc_sensor[8].desc, "-12V"); 340 COPYDESCR(sc->sc_sensor[9].desc, "-5V"); 341 COPYDESCR(sc->sc_sensor[10].desc, "STANDBY"); 342 COPYDESCR(sc->sc_sensor[11].desc, "VBAT"); 343 344 /* fans */ 345 for (i = IT_FANSTART_IDX; i < IT_NUM_SENSORS; i++) 346 sc->sc_sensor[i].units = ENVSYS_SFANRPM; 347 348 COPYDESCR(sc->sc_sensor[12].desc, "CPU Fan"); 349 COPYDESCR(sc->sc_sensor[13].desc, "System Fan"); 350 COPYDESCR(sc->sc_sensor[14].desc, "Aux Fan"); 351 } 352 #undef COPYDESCR 353 354 static void 355 itesio_refresh_temp(struct itesio_softc *sc, envsys_data_t *edata) 356 { 357 int sdata; 358 359 sdata = itesio_ecreadreg(sc, ITESIO_EC_SENSORTEMPBASE + edata->sensor); 360 /* sensor is not connected or reporting invalid data */ 361 if (sdata == 0 || sdata >= 0xfa) { 362 edata->state = ENVSYS_SINVALID; 363 return; 364 } 365 366 DPRINTF(("%s: sdata[temp%d] 0x%x\n", __func__, edata->sensor, sdata)); 367 /* Convert temperature to uK */ 368 edata->value_cur = sdata * 1000000 + 273150000; 369 edata->state = ENVSYS_SVALID; 370 } 371 372 static void 373 itesio_refresh_volts(struct itesio_softc *sc, envsys_data_t *edata) 374 { 375 uint8_t vbatcr = 0; 376 int i, sdata; 377 378 i = edata->sensor - IT_VOLTSTART_IDX; 379 380 sdata = itesio_ecreadreg(sc, ITESIO_EC_SENSORVOLTBASE + i); 381 /* not connected */ 382 if (sdata == 0 || sdata == 0xff) { 383 edata->state = ENVSYS_SINVALID; 384 return; 385 } 386 387 /* 388 * update VBAT voltage reading every time we read it, to get 389 * latest value. 390 */ 391 if (i == 8) { 392 vbatcr = itesio_ecreadreg(sc, ITESIO_EC_CONFIG); 393 SET(vbatcr, ITESIO_EC_UPDATEVBAT); 394 itesio_ecwritereg(sc, ITESIO_EC_CONFIG, vbatcr); 395 } 396 397 DPRINTF(("%s: sdata[volt%d] 0x%x\n", __func__, i, sdata)); 398 399 /* voltage returned as (mV << 4) */ 400 edata->value_cur = (sdata << 4); 401 /* rfact is (factor * 10^4) */ 402 edata->value_cur *= itesio_vrfact[i]; 403 404 if (edata->rfact) 405 edata->value_cur += edata->rfact; 406 else 407 edata->rfact = itesio_vrfact[i]; 408 409 /* division by 10 gets us back to uVDC */ 410 edata->value_cur /= 10; 411 edata->state = ENVSYS_SVALID; 412 } 413 414 static void 415 itesio_refresh_fans(struct itesio_softc *sc, envsys_data_t *edata) 416 { 417 uint8_t mode = 0; 418 uint16_t sdata = 0; 419 int i, divisor, odivisor, ndivisor; 420 421 i = edata->sensor - IT_FANSTART_IDX; 422 divisor = odivisor = ndivisor = 0; 423 424 if (sc->sc_chipid == ITESIO_ID8705 || sc->sc_chipid == ITESIO_ID8712) { 425 /* 426 * Use the Fan Tachometer Divisor Register for 427 * IT8705F and IT8712F. 428 */ 429 divisor = odivisor = ndivisor = 430 itesio_ecreadreg(sc, ITESIO_EC_FAN_TDR); 431 sdata = itesio_ecreadreg(sc, ITESIO_EC_SENSORFANBASE + i); 432 if (sdata == 0xff) { 433 edata->state = ENVSYS_SINVALID; 434 if (i == 2) 435 ndivisor |= 0x40; 436 else { 437 ndivisor &= ~(7 << (i * 3)); 438 ndivisor |= ((divisor + 1) & 7) << (i * 3); 439 } 440 } else { 441 if (i == 2) 442 divisor = divisor & 1 ? 3 : 1; 443 444 if ((sdata << (divisor & 7)) == 0) 445 edata->state = ENVSYS_SINVALID; 446 else { 447 edata->value_cur = 448 1350000 / (sdata << (divisor & 7)); 449 edata->state = ENVSYS_SVALID; 450 } 451 } 452 DPRINTF(("%s: 8bit sdata[fan%d] 0x%x div: 0x%x\n", __func__, 453 i, sdata, divisor)); 454 if (ndivisor != odivisor) 455 itesio_ecwritereg(sc, ITESIO_EC_FAN_TDR, ndivisor); 456 } else { 457 mode = itesio_ecreadreg(sc, ITESIO_EC_FAN16_CER); 458 sdata = itesio_ecreadreg(sc, ITESIO_EC_SENSORFANBASE + i); 459 if (mode & (1 << i)) 460 sdata += (itesio_ecreadreg(sc, 461 ITESIO_EC_SENSORFANEXTBASE + i) << 8); 462 edata->state = ENVSYS_SVALID; 463 if (sdata == 0 || 464 sdata == ((mode & (1 << i)) ? 0xffff : 0xff)) 465 edata->state = ENVSYS_SINVALID; 466 else { 467 edata->value_cur = 1350000 / 2 / sdata; 468 edata->state = ENVSYS_SVALID; 469 } 470 DPRINTF(("%s: 16bit sdata[fan%d] 0x%x\n", __func__, i, sdata)); 471 } 472 } 473 474 static void 475 itesio_refresh(struct sysmon_envsys *sme, struct envsys_data *edata) 476 { 477 struct itesio_softc *sc = sme->sme_cookie; 478 479 if (edata->sensor < IT_VOLTSTART_IDX) 480 itesio_refresh_temp(sc, edata); 481 else if (edata->sensor >= IT_VOLTSTART_IDX && 482 edata->sensor < IT_FANSTART_IDX) 483 itesio_refresh_volts(sc, edata); 484 else 485 itesio_refresh_fans(sc, edata); 486 } 487
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