Annotation of sys/dev/pci/viaenv.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: viaenv.c,v 1.11 2007/05/14 00:37:18 jsg Exp $ */
! 2: /* $NetBSD: viaenv.c,v 1.9 2002/10/02 16:51:59 thorpej Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 2000 Johan Danielsson
! 6: * All rights reserved.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: *
! 12: * 1. Redistributions of source code must retain the above copyright
! 13: * notice, this list of conditions and the following disclaimer.
! 14: *
! 15: * 2. Redistributions in binary form must reproduce the above copyright
! 16: * notice, this list of conditions and the following disclaimer in the
! 17: * documentation and/or other materials provided with the distribution.
! 18: *
! 19: * 3. Neither the name of author nor the names of any contributors may
! 20: * be used to endorse or promote products derived from this
! 21: * software without specific prior written permission.
! 22: *
! 23: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS
! 24: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 25: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 26: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 27: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 28: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 29: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 30: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 31: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 32: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 33: * POSSIBILITY OF SUCH DAMAGE.
! 34: */
! 35:
! 36: /* driver for the hardware monitoring part of the VIA VT82C686A */
! 37:
! 38: #include <sys/param.h>
! 39: #include <sys/systm.h>
! 40: #include <sys/device.h>
! 41: #include <sys/kernel.h>
! 42: #include <sys/queue.h>
! 43: #include <sys/sensors.h>
! 44: #include <sys/timeout.h>
! 45: #ifdef __HAVE_TIMECOUNTER
! 46: #include <sys/timetc.h>
! 47: #endif
! 48:
! 49: #include <machine/bus.h>
! 50:
! 51: #include <dev/pci/pcivar.h>
! 52: #include <dev/pci/pcireg.h>
! 53: #include <dev/pci/pcidevs.h>
! 54:
! 55: #ifdef VIAENV_DEBUG
! 56: unsigned int viaenv_debug = 0;
! 57: #define DPRINTF(X) do { if(viaenv_debug) printf X ; } while(0)
! 58: #else
! 59: #define DPRINTF(X)
! 60: #endif
! 61:
! 62: #define VIANUMSENSORS 10 /* three temp, two fan, five voltage */
! 63:
! 64: struct viaenv_softc {
! 65: struct device sc_dev;
! 66: bus_space_tag_t sc_iot;
! 67: bus_space_handle_t sc_ioh;
! 68: bus_space_handle_t sc_pm_ioh;
! 69:
! 70: int sc_fan_div[2]; /* fan RPM divisor */
! 71:
! 72: struct ksensor sc_data[VIANUMSENSORS];
! 73: struct ksensordev sc_sensordev;
! 74: };
! 75:
! 76: int viaenv_match(struct device *, void *, void *);
! 77: void viaenv_attach(struct device *, struct device *, void *);
! 78:
! 79: int val_to_uK(unsigned int);
! 80: int val_to_rpm(unsigned int, int);
! 81: long val_to_uV(unsigned int, int);
! 82: void viaenv_refresh_sensor_data(struct viaenv_softc *);
! 83: void viaenv_refresh(void *);
! 84:
! 85: #ifdef __HAVE_TIMECOUNTER
! 86: u_int viaenv_get_timecount(struct timecounter *tc);
! 87:
! 88: struct timecounter viaenv_timecounter = {
! 89: viaenv_get_timecount, /* get_timecount */
! 90: 0, /* no poll_pps */
! 91: 0xffffff, /* counter_mask */
! 92: 3579545, /* frequency */
! 93: "VIAPM", /* name */
! 94: 1000 /* quality */
! 95: };
! 96: #endif /* __HAVE_TIMECOUNTER */
! 97:
! 98: struct cfattach viaenv_ca = {
! 99: sizeof(struct viaenv_softc),
! 100: viaenv_match,
! 101: viaenv_attach
! 102: };
! 103:
! 104: struct cfdriver viaenv_cd = {
! 105: NULL, "viaenv", DV_DULL
! 106: };
! 107:
! 108: struct timeout viaenv_timeout;
! 109:
! 110: const struct pci_matchid viaenv_devices[] = {
! 111: { PCI_VENDOR_VIATECH, PCI_PRODUCT_VIATECH_VT82C686A_SMB },
! 112: { PCI_VENDOR_VIATECH, PCI_PRODUCT_VIATECH_VT8231_PWR }
! 113: };
! 114:
! 115: int
! 116: viaenv_match(struct device *parent, void *match, void *aux)
! 117: {
! 118: return (pci_matchbyid((struct pci_attach_args *)aux, viaenv_devices,
! 119: sizeof(viaenv_devices) / sizeof(viaenv_devices[0])));
! 120: }
! 121:
! 122: /*
! 123: * XXX there doesn't seem to exist much hard documentation on how to
! 124: * convert the raw values to usable units, this code is more or less
! 125: * stolen from the Linux driver, but changed to suit our conditions
! 126: */
! 127:
! 128: /*
! 129: * lookup-table to translate raw values to uK, this is the same table
! 130: * used by the Linux driver (modulo units); there is a fifth degree
! 131: * polynomial that supposedly been used to generate this table, but I
! 132: * haven't been able to figure out how -- it doesn't give the same values
! 133: */
! 134:
! 135: static const long val_to_temp[] = {
! 136: 20225, 20435, 20645, 20855, 21045, 21245, 21425, 21615, 21785, 21955,
! 137: 22125, 22285, 22445, 22605, 22755, 22895, 23035, 23175, 23315, 23445,
! 138: 23565, 23695, 23815, 23925, 24045, 24155, 24265, 24365, 24465, 24565,
! 139: 24665, 24765, 24855, 24945, 25025, 25115, 25195, 25275, 25355, 25435,
! 140: 25515, 25585, 25655, 25725, 25795, 25865, 25925, 25995, 26055, 26115,
! 141: 26175, 26235, 26295, 26355, 26405, 26465, 26515, 26575, 26625, 26675,
! 142: 26725, 26775, 26825, 26875, 26925, 26975, 27025, 27065, 27115, 27165,
! 143: 27205, 27255, 27295, 27345, 27385, 27435, 27475, 27515, 27565, 27605,
! 144: 27645, 27685, 27735, 27775, 27815, 27855, 27905, 27945, 27985, 28025,
! 145: 28065, 28105, 28155, 28195, 28235, 28275, 28315, 28355, 28405, 28445,
! 146: 28485, 28525, 28565, 28615, 28655, 28695, 28735, 28775, 28825, 28865,
! 147: 28905, 28945, 28995, 29035, 29075, 29125, 29165, 29205, 29245, 29295,
! 148: 29335, 29375, 29425, 29465, 29505, 29555, 29595, 29635, 29685, 29725,
! 149: 29765, 29815, 29855, 29905, 29945, 29985, 30035, 30075, 30125, 30165,
! 150: 30215, 30255, 30305, 30345, 30385, 30435, 30475, 30525, 30565, 30615,
! 151: 30655, 30705, 30755, 30795, 30845, 30885, 30935, 30975, 31025, 31075,
! 152: 31115, 31165, 31215, 31265, 31305, 31355, 31405, 31455, 31505, 31545,
! 153: 31595, 31645, 31695, 31745, 31805, 31855, 31905, 31955, 32005, 32065,
! 154: 32115, 32175, 32225, 32285, 32335, 32395, 32455, 32515, 32575, 32635,
! 155: 32695, 32755, 32825, 32885, 32955, 33025, 33095, 33155, 33235, 33305,
! 156: 33375, 33455, 33525, 33605, 33685, 33765, 33855, 33935, 34025, 34115,
! 157: 34205, 34295, 34395, 34495, 34595, 34695, 34805, 34905, 35015, 35135,
! 158: 35245, 35365, 35495, 35615, 35745, 35875, 36015, 36145, 36295, 36435,
! 159: 36585, 36745, 36895, 37065, 37225, 37395, 37575, 37755, 37935, 38125,
! 160: 38325, 38525, 38725, 38935, 39155, 39375, 39605, 39835, 40075, 40325,
! 161: 40575, 40835, 41095, 41375, 41655, 41935,
! 162: };
! 163:
! 164: /* use above table to convert values to temperatures in micro-Kelvins */
! 165: int
! 166: val_to_uK(unsigned int val)
! 167: {
! 168: int i = val / 4;
! 169: int j = val % 4;
! 170:
! 171: assert(i >= 0 && i <= 255);
! 172:
! 173: if (j == 0 || i == 255)
! 174: return val_to_temp[i] * 10000;
! 175:
! 176: /* is linear interpolation ok? */
! 177: return (val_to_temp[i] * (4 - j) +
! 178: val_to_temp[i + 1] * j) * 2500 /* really: / 4 * 10000 */ ;
! 179: }
! 180:
! 181: int
! 182: val_to_rpm(unsigned int val, int div)
! 183: {
! 184:
! 185: if (val == 0)
! 186: return 0;
! 187:
! 188: return 1350000 / val / div;
! 189: }
! 190:
! 191: long
! 192: val_to_uV(unsigned int val, int index)
! 193: {
! 194: static const long mult[] =
! 195: {1250000, 1250000, 1670000, 2600000, 6300000};
! 196:
! 197: assert(index >= 0 && index <= 4);
! 198:
! 199: return (25LL * val + 133) * mult[index] / 2628;
! 200: }
! 201:
! 202: #define VIAENV_TSENS3 0x1f
! 203: #define VIAENV_TSENS1 0x20
! 204: #define VIAENV_TSENS2 0x21
! 205: #define VIAENV_VSENS1 0x22
! 206: #define VIAENV_VSENS2 0x23
! 207: #define VIAENV_VCORE 0x24
! 208: #define VIAENV_VSENS3 0x25
! 209: #define VIAENV_VSENS4 0x26
! 210: #define VIAENV_FAN1 0x29
! 211: #define VIAENV_FAN2 0x2a
! 212: #define VIAENV_FANCONF 0x47 /* fan configuration */
! 213: #define VIAENV_TLOW 0x49 /* temperature low order value */
! 214: #define VIAENV_TIRQ 0x4b /* temperature interrupt configuration */
! 215:
! 216: #define VIAENV_GENCFG 0x40 /* general configuration */
! 217: #define VIAENV_GENCFG_TMR32 (1 << 11) /* 32-bit PM timer */
! 218: #define VIAENV_GENCFG_PMEN (1 << 15) /* enable PM I/O space */
! 219: #define VIAENV_PMBASE 0x48 /* power management I/O space base */
! 220: #define VIAENV_PMSIZE 128 /* power management I/O space size */
! 221: #define VIAENV_PM_TMR 0x08 /* PM timer */
! 222:
! 223: void
! 224: viaenv_refresh_sensor_data(struct viaenv_softc *sc)
! 225: {
! 226: int i;
! 227: u_int8_t v, v2;
! 228:
! 229: /* temperature */
! 230: v = bus_space_read_1(sc->sc_iot, sc->sc_ioh, VIAENV_TIRQ);
! 231: v2 = bus_space_read_1(sc->sc_iot, sc->sc_ioh, VIAENV_TSENS1);
! 232: DPRINTF(("TSENS1 = %d\n", (v2 << 2) | (v >> 6)));
! 233: sc->sc_data[0].value = val_to_uK((v2 << 2) | (v >> 6));
! 234:
! 235: v = bus_space_read_1(sc->sc_iot, sc->sc_ioh, VIAENV_TLOW);
! 236: v2 = bus_space_read_1(sc->sc_iot, sc->sc_ioh, VIAENV_TSENS2);
! 237: DPRINTF(("TSENS2 = %d\n", (v2 << 2) | ((v >> 4) & 0x3)));
! 238: sc->sc_data[1].value = val_to_uK((v2 << 2) | ((v >> 4) & 0x3));
! 239:
! 240: v2 = bus_space_read_1(sc->sc_iot, sc->sc_ioh, VIAENV_TSENS3);
! 241: DPRINTF(("TSENS3 = %d\n", (v2 << 2) | (v >> 6)));
! 242: sc->sc_data[2].value = val_to_uK((v2 << 2) | (v >> 6));
! 243:
! 244: v = bus_space_read_1(sc->sc_iot, sc->sc_ioh, VIAENV_FANCONF);
! 245:
! 246: sc->sc_fan_div[0] = 1 << ((v >> 4) & 0x3);
! 247: sc->sc_fan_div[1] = 1 << ((v >> 6) & 0x3);
! 248:
! 249: /* fan */
! 250: for (i = 3; i <= 4; i++) {
! 251: v = bus_space_read_1(sc->sc_iot, sc->sc_ioh,
! 252: VIAENV_FAN1 + i - 3);
! 253: DPRINTF(("FAN%d = %d / %d\n", i - 3, v,
! 254: sc->sc_fan_div[i - 3]));
! 255: sc->sc_data[i].value = val_to_rpm(v, sc->sc_fan_div[i - 3]);
! 256: }
! 257:
! 258: /* voltage */
! 259: for (i = 5; i <= 9; i++) {
! 260: v = bus_space_read_1(sc->sc_iot, sc->sc_ioh,
! 261: VIAENV_VSENS1 + i - 5);
! 262: DPRINTF(("V%d = %d\n", i - 5, v));
! 263: sc->sc_data[i].value = val_to_uV(v, i - 5);
! 264: }
! 265: }
! 266:
! 267: void
! 268: viaenv_attach(struct device * parent, struct device * self, void *aux)
! 269: {
! 270: struct viaenv_softc *sc = (struct viaenv_softc *) self;
! 271: struct pci_attach_args *pa = aux;
! 272: pcireg_t iobase, control;
! 273: int i;
! 274:
! 275: iobase = pci_conf_read(pa->pa_pc, pa->pa_tag, 0x70);
! 276: control = pci_conf_read(pa->pa_pc, pa->pa_tag, 0x74);
! 277: if ((iobase & 0xff80) == 0 || (control & 1) == 0) {
! 278: printf(": HWM disabled");
! 279: goto nohwm;
! 280: }
! 281: sc->sc_iot = pa->pa_iot;
! 282: if (bus_space_map(sc->sc_iot, iobase & 0xff80, 128, 0, &sc->sc_ioh)) {
! 283: printf(": failed to map HWM I/O space");
! 284: goto nohwm;
! 285: }
! 286:
! 287: for (i = 0; i <= 2; i++) {
! 288: sc->sc_data[i].type = SENSOR_TEMP;
! 289: }
! 290:
! 291: for (i = 3; i <= 4; i++) {
! 292: sc->sc_data[i].type = SENSOR_FANRPM;
! 293: }
! 294:
! 295: for (i = 5; i <= 9; ++i) {
! 296: sc->sc_data[i].type = SENSOR_VOLTS_DC;
! 297: }
! 298: strlcpy(sc->sc_data[5].desc, "VSENS1",
! 299: sizeof(sc->sc_data[5].desc)); /* CPU core (2V) */
! 300: strlcpy(sc->sc_data[6].desc, "VSENS2",
! 301: sizeof(sc->sc_data[6].desc)); /* NB core? (2.5V) */
! 302: strlcpy(sc->sc_data[7].desc, "Vcore",
! 303: sizeof(sc->sc_data[7].desc)); /* Vcore (3.3V) */
! 304: strlcpy(sc->sc_data[8].desc, "VSENS3",
! 305: sizeof(sc->sc_data[8].desc)); /* VSENS3 (5V) */
! 306: strlcpy(sc->sc_data[9].desc, "VSENS4",
! 307: sizeof(sc->sc_data[9].desc)); /* VSENS4 (12V) */
! 308:
! 309: /* Get initial set of sensor values. */
! 310: viaenv_refresh_sensor_data(sc);
! 311:
! 312: /* Register sensors with sysctl */
! 313: strlcpy(sc->sc_sensordev.xname, sc->sc_dev.dv_xname,
! 314: sizeof(sc->sc_sensordev.xname));
! 315: for (i = 0; i < VIANUMSENSORS; ++i)
! 316: sensor_attach(&sc->sc_sensordev, &sc->sc_data[i]);
! 317: sensordev_install(&sc->sc_sensordev);
! 318:
! 319: /* Refresh sensors data every 1.5 seconds */
! 320: timeout_set(&viaenv_timeout, viaenv_refresh, sc);
! 321: timeout_add(&viaenv_timeout, (15 * hz) / 10);
! 322:
! 323: nohwm:
! 324: #ifdef __HAVE_TIMECOUNTER
! 325: /* Check if power management I/O space is enabled */
! 326: control = pci_conf_read(pa->pa_pc, pa->pa_tag, VIAENV_GENCFG);
! 327: if ((control & VIAENV_GENCFG_PMEN) == 0) {
! 328: printf(": PM disabled");
! 329: goto nopm;
! 330: }
! 331:
! 332: /* Map power management I/O space */
! 333: iobase = pci_conf_read(pa->pa_pc, pa->pa_tag, VIAENV_PMBASE);
! 334: if (bus_space_map(sc->sc_iot, PCI_MAPREG_IO_ADDR(iobase),
! 335: VIAENV_PMSIZE, 0, &sc->sc_pm_ioh)) {
! 336: printf(": failed to map PM I/O space");
! 337: goto nopm;
! 338: }
! 339:
! 340: /* Check for 32-bit PM timer */
! 341: if (control & VIAENV_GENCFG_TMR32)
! 342: viaenv_timecounter.tc_counter_mask = 0xffffffff;
! 343:
! 344: /* Register new timecounter */
! 345: viaenv_timecounter.tc_priv = sc;
! 346: tc_init(&viaenv_timecounter);
! 347:
! 348: printf(": %s-bit timer at %lluHz",
! 349: (viaenv_timecounter.tc_counter_mask == 0xffffffff ? "32" : "24"),
! 350: (unsigned long long)viaenv_timecounter.tc_frequency);
! 351:
! 352: nopm:
! 353: #endif /* __HAVE_TIMECOUNTER */
! 354: printf("\n");
! 355: }
! 356:
! 357: void
! 358: viaenv_refresh(void *arg)
! 359: {
! 360: struct viaenv_softc *sc = (struct viaenv_softc *)arg;
! 361:
! 362: viaenv_refresh_sensor_data(sc);
! 363: timeout_add(&viaenv_timeout, (15 * hz) / 10);
! 364: }
! 365:
! 366: #ifdef __HAVE_TIMECOUNTER
! 367: u_int
! 368: viaenv_get_timecount(struct timecounter *tc)
! 369: {
! 370: struct viaenv_softc *sc = tc->tc_priv;
! 371: u_int u1, u2, u3;
! 372:
! 373: u2 = bus_space_read_4(sc->sc_iot, sc->sc_pm_ioh, VIAENV_PM_TMR);
! 374: u3 = bus_space_read_4(sc->sc_iot, sc->sc_pm_ioh, VIAENV_PM_TMR);
! 375: do {
! 376: u1 = u2;
! 377: u2 = u3;
! 378: u3 = bus_space_read_4(sc->sc_iot, sc->sc_pm_ioh,
! 379: VIAENV_PM_TMR);
! 380: } while (u1 > u2 || u2 > u3);
! 381:
! 382: return (u2);
! 383: }
! 384: #endif /* __HAVE_TIMECOUNTER */
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