/* $OpenBSD: it.c,v 1.8 2004/02/10 20:01:40 grange Exp $ */ /* * Copyright (c) 2003 Julien Bordet * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include #include #include #include #include #include #include #include #include #if defined(ITDEBUG) #define DPRINTF(x) do { printf x; } while (0) #else #define DPRINTF(x) #endif int it_match(struct device *, void *, void *); void it_attach(struct device *, struct device *, void *); u_int8_t it_readreg(struct it_softc *, int); void it_writereg(struct it_softc *, int, int); void it_setup_volt(struct it_softc *, int, int); void it_setup_temp(struct it_softc *, int, int); void it_setup_fan(struct it_softc *, int, int); void it_generic_stemp(struct it_softc *, struct sensor *); void it_generic_svolt(struct it_softc *, struct sensor *); void it_generic_fanrpm(struct it_softc *, struct sensor *); void it_refresh_sensor_data(struct it_softc *); void it_refresh(void *); struct cfattach it_ca = { sizeof(struct it_softc), it_match, it_attach }; struct cfdriver it_cd = { NULL, "it", DV_DULL }; struct timeout it_timeout; int it_match(struct device *parent, void *match, void *aux) { bus_space_tag_t iot; bus_space_handle_t ioh; struct isa_attach_args *ia = aux; int iobase; int rv; u_int8_t cr; iot = ia->ia_iot; iobase = ia->ipa_io[0].base; if (bus_space_map(iot, iobase, 8, 0, &ioh)) { DPRINTF(("%s: can't map i/o space\n", __func__)); return (0); } /* Check for some power-on defaults */ bus_space_write_1(iot, ioh, ITC_ADDR, ITD_CONFIG); cr = bus_space_read_1(iot, ioh, ITC_DATA); /* The monitoring may have been enabled by BIOS */ if (cr == 0x11 || cr == 0x13 || cr == 0x18 || cr == 0x19) rv = 1; DPRINTF(("it: rv = %d, cr = %x\n", rv, cr)); bus_space_unmap(iot, ioh, 8); if (rv) { ia->ipa_nio = 1; ia->ipa_io[0].length = 8; ia->ipa_nmem = 0; ia->ipa_nirq = 0; ia->ipa_ndrq = 0; } return (rv); } void it_attach(struct device *parent, struct device *self, void *aux) { struct it_softc *sc = (void *)self; int iobase; bus_space_tag_t iot; struct isa_attach_args *ia = aux; int i; u_int8_t cr; iobase = ia->ipa_io[0].base; iot = sc->it_iot = ia->ia_iot; if (bus_space_map(iot, iobase, 8, 0, &sc->it_ioh)) { printf(": can't map i/o space\n"); return; } i = it_readreg(sc, ITD_CHIPID); switch (i) { case IT_ID_IT87: printf(": IT87\n"); break; default: printf(": unknown chip (ID %d)\n", i); break; } sc->numsensors = IT_NUM_SENSORS; /* Reset chip */ it_writereg(sc, ITD_CONFIG, 0x80); it_setup_fan(sc, 0, 3); it_setup_volt(sc, 3, 9); it_setup_temp(sc, 12, 3); /* Activate monitoring */ cr = it_readreg(sc, ITD_CONFIG); cr |= 0x01 | 0x08; it_writereg(sc, ITD_CONFIG, cr); /* Initialize sensors */ for (i = 0; i < sc->numsensors; ++i) { strlcpy(sc->sensors[i].device, sc->sc_dev.dv_xname, sizeof(sc->sensors[i].device)); SENSOR_ADD(&sc->sensors[i]); } timeout_set(&it_timeout, it_refresh, sc); timeout_add(&it_timeout, (15 * hz) / 10); } u_int8_t it_readreg(struct it_softc *sc, int reg) { bus_space_write_1(sc->it_iot, sc->it_ioh, ITC_ADDR, reg); return (bus_space_read_1(sc->it_iot, sc->it_ioh, ITC_DATA)); } void it_writereg(struct it_softc *sc, int reg, int val) { bus_space_write_1(sc->it_iot, sc->it_ioh, ITC_ADDR, reg); bus_space_write_1(sc->it_iot, sc->it_ioh, ITC_DATA, val); } void it_setup_volt(struct it_softc *sc, int start, int n) { int i; for (i = 0; i < n; ++i) { sc->sensors[start + i].type = SENSOR_VOLTS_DC; } sc->sensors[start + 0].rfact = 10000; snprintf(sc->sensors[start + 0].desc, sizeof(sc->sensors[0].desc), "VCORE_A"); sc->sensors[start + 1].rfact = 10000; snprintf(sc->sensors[start + 1].desc, sizeof(sc->sensors[1].desc), "VCORE_B"); sc->sensors[start + 2].rfact = 10000; snprintf(sc->sensors[start + 2].desc, sizeof(sc->sensors[2].desc), "+3.3V"); sc->sensors[start + 3].rfact = (int)(( 16.8 / 10) * 10000); snprintf(sc->sensors[start + 3].desc, sizeof(sc->sensors[3].desc), "+5V"); sc->sensors[start + 4].rfact = (int)(( 40 / 10) * 10000); snprintf(sc->sensors[start + 4].desc, sizeof(sc->sensors[4].desc), "+12V"); sc->sensors[start + 5].rfact = (int)(( 31.0 / 10) * 10000); snprintf(sc->sensors[start + 5].desc, sizeof(sc->sensors[5].desc), "Unused"); sc->sensors[start + 6].rfact = (int)(( 103.0 / 20) * 10000); snprintf(sc->sensors[start + 6].desc, sizeof(sc->sensors[6].desc), "-12V"); sc->sensors[start + 7].rfact = (int)(( 16.8 / 10) * 10000); snprintf(sc->sensors[start + 7].desc, sizeof(sc->sensors[7].desc), "+5VSB"); sc->sensors[start + 8].rfact = 10000; snprintf(sc->sensors[start + 8].desc, sizeof(sc->sensors[8].desc), "VBAT"); /* Enable voltage monitoring */ it_writereg(sc, ITD_VOLTENABLE, 0xff); } void it_setup_temp(struct it_softc *sc, int start, int n) { int i; for (i = 0; i < n; ++i) { sc->sensors[start + i].type = SENSOR_TEMP; snprintf(sc->sensors[start + i].desc, sizeof(sc->sensors[start + i].desc), "Temp%d", i + 1); } /* Enable temperature monitoring * bits 7 and 8 are reserved, so we don't change them */ i = it_readreg(sc, ITD_TEMPENABLE) & 0xc0; it_writereg(sc, ITD_TEMPENABLE, i | 0x38); } void it_setup_fan(struct it_softc *sc, int start, int n) { int i; for (i = 0; i < n; ++i) { sc->sensors[start + i].type = SENSOR_FANRPM; snprintf(sc->sensors[start + i].desc, sizeof(sc->sensors[start + i].desc), "Fan%d", i + 1); } /* Enable fan rpm monitoring * bits 4 to 6 are the only interesting bits */ i = it_readreg(sc, ITD_FANENABLE) & 0x8f; it_writereg(sc, ITD_FANENABLE, i | 0x70); } void it_generic_stemp(struct it_softc *sc, struct sensor *sensors) { int i, sdata; for (i = 0; i < 3; i++) { sdata = it_readreg(sc, ITD_SENSORTEMPBASE + i); /* Convert temperature to Fahrenheit degres */ sensors[i].value = sdata * 1000000 + 273150000; } } void it_generic_svolt(struct it_softc *sc, struct sensor *sensors) { int i, sdata; for (i = 0; i < 9; i++) { sdata = it_readreg(sc, ITD_SENSORVOLTBASE + i); DPRINTF(("sdata[volt%d] 0x%x\n", i, sdata)); /* voltage returned as (mV >> 4) */ sensors[i].value = (sdata << 4); /* rfact is (factor * 10^4) */ sensors[i].value *= sensors[i].rfact; /* these two values are negative and formula is different */ if (i == 5) sensors[i].value -= (int) (21.0 / 10 * IT_VREF * 10000); if (i == 6) sensors[i].value -= (int) (83.0 / 20 * IT_VREF * 10000); /* division by 10 gets us back to uVDC */ sensors[i].value /= 10; } } void it_generic_fanrpm(struct it_softc *sc, struct sensor *sensors) { int i, sdata, divisor; for (i = 0; i < 2; i++) { sdata = it_readreg(sc, ITD_SENSORFANBASE + i); switch (i) { case 2: divisor = 2; case 1: divisor = (it_readreg(sc, ITD_FAN) >> 3) & 0x7; break; default: divisor = it_readreg(sc, ITD_FAN) & 0x7; break; } if (sdata == 0xff) { sensors[i].flags |= SENSOR_FINVALID; } else if (sdata == 0) { sensors[i].value = 0; } else { sensors[i].value = 1350000 / (sdata << divisor); } } } /* * pre: last read occurred >= 1.5 seconds ago * post: sensors[] current data are the latest from the chip */ void it_refresh_sensor_data(struct it_softc *sc) { /* Refresh our stored data for every sensor */ it_generic_stemp(sc, &sc->sensors[12]); it_generic_svolt(sc, &sc->sensors[3]); it_generic_fanrpm(sc, &sc->sensors[0]); } void it_refresh(void *arg) { struct it_softc *sc = (struct it_softc *)arg; it_refresh_sensor_data(sc); timeout_add(&it_timeout, (15 * hz) / 10); }