itesio_isa.c revision 1.4
1 /* $NetBSD: itesio_isa.c,v 1.4 2007/11/16 08:00:15 xtraeme 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 1.4 2007/11/16 08:00:15 xtraeme 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 * Enter to the Super I/O MB PNP mode. 165 */ 166 itesio_enter(ia->ia_iot, ioh); 167 /* 168 * Get info from the Super I/O Global Configuration Registers: 169 * Chip IDs and Device Revision. 170 */ 171 sc->sc_chipid = (itesio_readreg(ia->ia_iot, ioh, ITESIO_CHIPID1) << 8); 172 sc->sc_chipid |= itesio_readreg(ia->ia_iot, ioh, ITESIO_CHIPID2); 173 sc->sc_devrev = (itesio_readreg(ia->ia_iot, ioh, ITESIO_DEVREV) & 0x0f); 174 /* 175 * Select the EC LDN to get the Base Address. 176 */ 177 itesio_writereg(ia->ia_iot, ioh, ITESIO_LDNSEL, ITESIO_EC_LDN); 178 sc->sc_hwmon_baseaddr = 179 (itesio_readreg(ia->ia_iot, ioh, ITESIO_EC_MSB) << 8); 180 sc->sc_hwmon_baseaddr |= itesio_readreg(ia->ia_iot, ioh, ITESIO_EC_LSB); 181 /* 182 * We are done, exit MB PNP mode and unmap I/O space. 183 */ 184 itesio_exit(ia->ia_iot, ioh); 185 bus_space_unmap(sc->sc_iot, ioh, 2); 186 187 aprint_normal(": iTE IT%4xF Super I/O (rev %d)\n", 188 sc->sc_chipid, sc->sc_devrev); 189 aprint_normal_dev(self, "Hardware Monitor registers at 0x%x\n", 190 sc->sc_hwmon_baseaddr); 191 192 if (bus_space_map(sc->sc_iot, sc->sc_hwmon_baseaddr, 8, 0, 193 &sc->sc_ioh)) { 194 aprint_error_dev(self, "cannot map hwmon i/o space\n"); 195 return; 196 } 197 198 sc->sc_hwmon_mapped = true; 199 200 /* Activate monitoring */ 201 cr = itesio_ecreadreg(sc, ITESIO_EC_CONFIG); 202 SET(cr, 0x01); 203 itesio_ecwritereg(sc, ITESIO_EC_CONFIG, cr); 204 205 #ifdef notyet 206 /* Enable beep alarms */ 207 cr = itesio_ecreadreg(sc, ITESIO_EC_BEEPEER); 208 SET(cr, 0x02); /* Voltage exceeds limit */ 209 SET(cr, 0x04); /* Temperature exceeds limit */ 210 itesio_ecwritereg(sc, ITESIO_EC_BEEPEER, cr); 211 #endif 212 213 /* 214 * Initialize and attach sensors. 215 */ 216 itesio_setup_sensors(sc); 217 sc->sc_sme = sysmon_envsys_create(); 218 for (i = 0; i < IT_NUM_SENSORS; i++) { 219 if (sysmon_envsys_sensor_attach(sc->sc_sme, 220 &sc->sc_sensor[i])) { 221 sysmon_envsys_destroy(sc->sc_sme); 222 return; 223 } 224 } 225 /* 226 * Hook into the system monitor. 227 */ 228 sc->sc_sme->sme_name = device_xname(self); 229 sc->sc_sme->sme_cookie = sc; 230 sc->sc_sme->sme_refresh = itesio_refresh; 231 232 if (sysmon_envsys_register(sc->sc_sme)) { 233 aprint_error_dev(self, "unable to register with sysmon\n"); 234 sysmon_envsys_destroy(sc->sc_sme); 235 bus_space_unmap(sc->sc_iot, sc->sc_ioh, 8); 236 } 237 sc->sc_hwmon_enabled = true; 238 } 239 240 static int 241 itesio_isa_detach(device_t self, int flags) 242 { 243 struct itesio_softc *sc = device_private(self); 244 245 if (sc->sc_hwmon_enabled) 246 sysmon_envsys_unregister(sc->sc_sme); 247 if (sc->sc_hwmon_mapped) 248 bus_space_unmap(sc->sc_iot, sc->sc_ioh, 8); 249 return 0; 250 } 251 252 /* 253 * Functions to read/write to the Environmental Controller. 254 */ 255 static uint8_t 256 itesio_ecreadreg(struct itesio_softc *sc, int reg) 257 { 258 bus_space_write_1(sc->sc_iot, sc->sc_ioh, ITESIO_EC_ADDR, reg); 259 return bus_space_read_1(sc->sc_iot, sc->sc_ioh, ITESIO_EC_DATA); 260 } 261 262 static void 263 itesio_ecwritereg(struct itesio_softc *sc, int reg, int val) 264 { 265 bus_space_write_1(sc->sc_iot, sc->sc_ioh, ITESIO_EC_ADDR, reg); 266 bus_space_write_1(sc->sc_iot, sc->sc_ioh, ITESIO_EC_DATA, val); 267 } 268 269 /* 270 * Functions to enter/exit/read/write to the Super I/O. 271 */ 272 static uint8_t 273 itesio_readreg(bus_space_tag_t iot, bus_space_handle_t ioh, int reg) 274 { 275 bus_space_write_1(iot, ioh, ITESIO_ADDR, reg); 276 return bus_space_read_1(iot, ioh, ITESIO_DATA); 277 } 278 279 static void 280 itesio_writereg(bus_space_tag_t iot, bus_space_handle_t ioh, int reg, int val) 281 { 282 bus_space_write_1(iot, ioh, ITESIO_ADDR, reg); 283 bus_space_write_1(iot, ioh, ITESIO_DATA, val); 284 } 285 286 static void 287 itesio_enter(bus_space_tag_t iot, bus_space_handle_t ioh) 288 { 289 bus_space_write_1(iot, ioh, ITESIO_ADDR, 0x87); 290 bus_space_write_1(iot, ioh, ITESIO_ADDR, 0x01); 291 bus_space_write_1(iot, ioh, ITESIO_ADDR, 0x55); 292 bus_space_write_1(iot, ioh, ITESIO_ADDR, 0x55); 293 } 294 295 static void 296 itesio_exit(bus_space_tag_t iot, bus_space_handle_t ioh) 297 { 298 bus_space_write_1(iot, ioh, ITESIO_ADDR, 0x02); 299 bus_space_write_1(iot, ioh, ITESIO_DATA, 0x02); 300 } 301 302 303 #define COPYDESCR(x, y) \ 304 do { \ 305 strlcpy((x), (y), sizeof(x)); \ 306 } while (0) 307 /* 308 * sysmon_envsys(9) glue. 309 */ 310 static void 311 itesio_setup_sensors(struct itesio_softc *sc) 312 { 313 int i; 314 315 /* temperatures */ 316 for (i = 0; i < IT_VOLTSTART_IDX; i++) 317 sc->sc_sensor[i].units = ENVSYS_STEMP; 318 319 COPYDESCR(sc->sc_sensor[0].desc, "CPU Temp"); 320 COPYDESCR(sc->sc_sensor[1].desc, "System Temp"); 321 COPYDESCR(sc->sc_sensor[2].desc, "Aux Temp"); 322 323 /* voltages */ 324 for (i = IT_VOLTSTART_IDX; i < IT_FANSTART_IDX; i++) { 325 sc->sc_sensor[i].units = ENVSYS_SVOLTS_DC; 326 sc->sc_sensor[i].flags = ENVSYS_FCHANGERFACT; 327 } 328 329 COPYDESCR(sc->sc_sensor[3].desc, "VCORE_A"); 330 COPYDESCR(sc->sc_sensor[4].desc, "VCORE_B"); 331 COPYDESCR(sc->sc_sensor[5].desc, "+3.3V"); 332 COPYDESCR(sc->sc_sensor[6].desc, "+5V"); 333 COPYDESCR(sc->sc_sensor[7].desc, "+12V"); 334 COPYDESCR(sc->sc_sensor[8].desc, "-12V"); 335 COPYDESCR(sc->sc_sensor[9].desc, "-5V"); 336 COPYDESCR(sc->sc_sensor[10].desc, "STANDBY"); 337 COPYDESCR(sc->sc_sensor[11].desc, "VBAT"); 338 339 /* fans */ 340 for (i = IT_FANSTART_IDX; i < IT_NUM_SENSORS; i++) 341 sc->sc_sensor[i].units = ENVSYS_SFANRPM; 342 343 COPYDESCR(sc->sc_sensor[12].desc, "CPU Fan"); 344 COPYDESCR(sc->sc_sensor[13].desc, "System Fan"); 345 COPYDESCR(sc->sc_sensor[14].desc, "Aux Fan"); 346 } 347 #undef COPYDESCR 348 349 static void 350 itesio_refresh_temp(struct itesio_softc *sc, envsys_data_t *edata) 351 { 352 int sdata; 353 354 sdata = itesio_ecreadreg(sc, ITESIO_EC_SENSORTEMPBASE + edata->sensor); 355 /* sensor is not connected or reporting invalid data */ 356 if (sdata == 0 || sdata >= 0xfa) { 357 edata->state = ENVSYS_SINVALID; 358 return; 359 } 360 361 DPRINTF(("%s: sdata[temp%d] 0x%x\n", __func__, edata->sensor, sdata)); 362 /* Convert temperature to uK */ 363 edata->value_cur = sdata * 1000000 + 273150000; 364 edata->state = ENVSYS_SVALID; 365 } 366 367 static void 368 itesio_refresh_volts(struct itesio_softc *sc, envsys_data_t *edata) 369 { 370 uint8_t vbatcr = 0; 371 int i, sdata; 372 373 i = edata->sensor - IT_VOLTSTART_IDX; 374 375 sdata = itesio_ecreadreg(sc, ITESIO_EC_SENSORVOLTBASE + i); 376 /* not connected */ 377 if (sdata == 0 || sdata == 0xff) { 378 edata->state = ENVSYS_SINVALID; 379 return; 380 } 381 382 /* 383 * update VBAT voltage reading every time we read it, to get 384 * latest value. 385 */ 386 if (i == 8) { 387 vbatcr = itesio_ecreadreg(sc, ITESIO_EC_CONFIG); 388 SET(vbatcr, ITESIO_EC_UPDATEVBAT); 389 itesio_ecwritereg(sc, ITESIO_EC_CONFIG, vbatcr); 390 } 391 392 DPRINTF(("%s: sdata[volt%d] 0x%x\n", __func__, i, sdata)); 393 394 /* voltage returned as (mV << 4) */ 395 edata->value_cur = (sdata << 4); 396 /* rfact is (factor * 10^4) */ 397 edata->value_cur *= itesio_vrfact[i]; 398 399 if (edata->rfact) 400 edata->value_cur += edata->rfact; 401 else 402 edata->rfact = itesio_vrfact[i]; 403 404 /* division by 10 gets us back to uVDC */ 405 edata->value_cur /= 10; 406 edata->state = ENVSYS_SVALID; 407 } 408 409 static void 410 itesio_refresh_fans(struct itesio_softc *sc, envsys_data_t *edata) 411 { 412 uint8_t mode = 0; 413 uint16_t sdata = 0; 414 int i, divisor, odivisor, ndivisor; 415 416 i = edata->sensor - IT_FANSTART_IDX; 417 divisor = odivisor = ndivisor = 0; 418 419 if (sc->sc_chipid == ITESIO_ID8705 || sc->sc_chipid == ITESIO_ID8712) { 420 /* 421 * Use the Fan Tachometer Divisor Register for 422 * IT8705F and IT8712F. 423 */ 424 divisor = odivisor = ndivisor = 425 itesio_ecreadreg(sc, ITESIO_EC_FAN_TDR); 426 sdata = itesio_ecreadreg(sc, ITESIO_EC_SENSORFANBASE + i); 427 if (sdata == 0xff) { 428 edata->state = ENVSYS_SINVALID; 429 if (i == 2) 430 ndivisor |= 0x40; 431 else { 432 ndivisor &= ~(7 << (i * 3)); 433 ndivisor |= ((divisor + 1) & 7) << (i * 3); 434 } 435 } else { 436 if (i == 2) 437 divisor = divisor & 1 ? 3 : 1; 438 439 if ((sdata << (divisor & 7)) == 0) 440 edata->state = ENVSYS_SINVALID; 441 else { 442 edata->value_cur = 443 1350000 / (sdata << (divisor & 7)); 444 edata->state = ENVSYS_SVALID; 445 } 446 } 447 DPRINTF(("%s: 8bit sdata[fan%d] 0x%x div: 0x%x\n", __func__, 448 i, sdata, divisor)); 449 if (ndivisor != odivisor) 450 itesio_ecwritereg(sc, ITESIO_EC_FAN_TDR, ndivisor); 451 } else { 452 mode = itesio_ecreadreg(sc, ITESIO_EC_FAN16_CER); 453 sdata = itesio_ecreadreg(sc, ITESIO_EC_SENSORFANBASE + i); 454 if (mode & (1 << i)) 455 sdata += (itesio_ecreadreg(sc, 456 ITESIO_EC_SENSORFANEXTBASE + i) << 8); 457 edata->state = ENVSYS_SVALID; 458 if (sdata == 0 || 459 sdata == ((mode & (1 << i)) ? 0xffff : 0xff)) 460 edata->state = ENVSYS_SINVALID; 461 else { 462 edata->value_cur = 1350000 / 2 / sdata; 463 edata->state = ENVSYS_SVALID; 464 } 465 DPRINTF(("%s: 16bit sdata[fan%d] 0x%x\n", __func__, i, sdata)); 466 } 467 } 468 469 static void 470 itesio_refresh(struct sysmon_envsys *sme, struct envsys_data *edata) 471 { 472 struct itesio_softc *sc = sme->sme_cookie; 473 474 if (edata->sensor < IT_VOLTSTART_IDX) 475 itesio_refresh_temp(sc, edata); 476 else if (edata->sensor >= IT_VOLTSTART_IDX && 477 edata->sensor < IT_FANSTART_IDX) 478 itesio_refresh_volts(sc, edata); 479 else 480 itesio_refresh_fans(sc, edata); 481 } 482
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