Annotation of src/sys/dev/isa/itesio_isa.c, Revision 1.4.4.4
1.4.4.4 ! mjf 1: /* $NetBSD: itesio_isa.c,v 1.8 2007/12/13 15:36:29 xtraeme Exp $ */
1.4.4.2 mjf 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@xtrarom.org>
6: * Copyright (c) 2003 Julien Bordet <zejames@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>
1.4.4.4 ! mjf 36: __KERNEL_RCSID(0, "$NetBSD: itesio_isa.c,v 1.8 2007/12/13 15:36:29 xtraeme Exp $");
1.4.4.2 mjf 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: }
1.4.4.3 mjf 163:
164: aprint_naive("\n");
165:
1.4.4.2 mjf 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:
1.4.4.3 mjf 235: if ((i = sysmon_envsys_register(sc->sc_sme))) {
236: aprint_error_dev(self,
237: "unable to register with sysmon (%d)\n", i);
1.4.4.2 mjf 238: sysmon_envsys_destroy(sc->sc_sme);
239: bus_space_unmap(sc->sc_iot, sc->sc_ioh, 8);
1.4.4.3 mjf 240: return;
1.4.4.2 mjf 241: }
242: sc->sc_hwmon_enabled = true;
1.4.4.4 ! mjf 243: if (!pmf_device_register(self, NULL, NULL))
! 244: aprint_error_dev(self, "couldn't establish power handler\n");
1.4.4.2 mjf 245: }
246:
247: static int
248: itesio_isa_detach(device_t self, int flags)
249: {
250: struct itesio_softc *sc = device_private(self);
251:
252: if (sc->sc_hwmon_enabled)
253: sysmon_envsys_unregister(sc->sc_sme);
254: if (sc->sc_hwmon_mapped)
255: bus_space_unmap(sc->sc_iot, sc->sc_ioh, 8);
256: return 0;
257: }
258:
259: /*
260: * Functions to read/write to the Environmental Controller.
261: */
262: static uint8_t
263: itesio_ecreadreg(struct itesio_softc *sc, int reg)
264: {
265: bus_space_write_1(sc->sc_iot, sc->sc_ioh, ITESIO_EC_ADDR, reg);
266: return bus_space_read_1(sc->sc_iot, sc->sc_ioh, ITESIO_EC_DATA);
267: }
268:
269: static void
270: itesio_ecwritereg(struct itesio_softc *sc, int reg, int val)
271: {
272: bus_space_write_1(sc->sc_iot, sc->sc_ioh, ITESIO_EC_ADDR, reg);
273: bus_space_write_1(sc->sc_iot, sc->sc_ioh, ITESIO_EC_DATA, val);
274: }
275:
276: /*
277: * Functions to enter/exit/read/write to the Super I/O.
278: */
279: static uint8_t
280: itesio_readreg(bus_space_tag_t iot, bus_space_handle_t ioh, int reg)
281: {
282: bus_space_write_1(iot, ioh, ITESIO_ADDR, reg);
283: return bus_space_read_1(iot, ioh, ITESIO_DATA);
284: }
285:
286: static void
287: itesio_writereg(bus_space_tag_t iot, bus_space_handle_t ioh, int reg, int val)
288: {
289: bus_space_write_1(iot, ioh, ITESIO_ADDR, reg);
290: bus_space_write_1(iot, ioh, ITESIO_DATA, val);
291: }
292:
293: static void
294: itesio_enter(bus_space_tag_t iot, bus_space_handle_t ioh)
295: {
296: bus_space_write_1(iot, ioh, ITESIO_ADDR, 0x87);
297: bus_space_write_1(iot, ioh, ITESIO_ADDR, 0x01);
298: bus_space_write_1(iot, ioh, ITESIO_ADDR, 0x55);
299: bus_space_write_1(iot, ioh, ITESIO_ADDR, 0x55);
300: }
301:
302: static void
303: itesio_exit(bus_space_tag_t iot, bus_space_handle_t ioh)
304: {
305: bus_space_write_1(iot, ioh, ITESIO_ADDR, 0x02);
306: bus_space_write_1(iot, ioh, ITESIO_DATA, 0x02);
307: }
308:
309:
310: #define COPYDESCR(x, y) \
311: do { \
312: strlcpy((x), (y), sizeof(x)); \
313: } while (0)
314: /*
315: * sysmon_envsys(9) glue.
316: */
317: static void
318: itesio_setup_sensors(struct itesio_softc *sc)
319: {
320: int i;
321:
322: /* temperatures */
323: for (i = 0; i < IT_VOLTSTART_IDX; i++)
324: sc->sc_sensor[i].units = ENVSYS_STEMP;
325:
326: COPYDESCR(sc->sc_sensor[0].desc, "CPU Temp");
327: COPYDESCR(sc->sc_sensor[1].desc, "System Temp");
328: COPYDESCR(sc->sc_sensor[2].desc, "Aux Temp");
329:
330: /* voltages */
331: for (i = IT_VOLTSTART_IDX; i < IT_FANSTART_IDX; i++) {
332: sc->sc_sensor[i].units = ENVSYS_SVOLTS_DC;
333: sc->sc_sensor[i].flags = ENVSYS_FCHANGERFACT;
334: }
335:
336: COPYDESCR(sc->sc_sensor[3].desc, "VCORE_A");
337: COPYDESCR(sc->sc_sensor[4].desc, "VCORE_B");
338: COPYDESCR(sc->sc_sensor[5].desc, "+3.3V");
339: COPYDESCR(sc->sc_sensor[6].desc, "+5V");
340: COPYDESCR(sc->sc_sensor[7].desc, "+12V");
341: COPYDESCR(sc->sc_sensor[8].desc, "-12V");
342: COPYDESCR(sc->sc_sensor[9].desc, "-5V");
343: COPYDESCR(sc->sc_sensor[10].desc, "STANDBY");
344: COPYDESCR(sc->sc_sensor[11].desc, "VBAT");
345:
346: /* fans */
347: for (i = IT_FANSTART_IDX; i < IT_NUM_SENSORS; i++)
348: sc->sc_sensor[i].units = ENVSYS_SFANRPM;
349:
350: COPYDESCR(sc->sc_sensor[12].desc, "CPU Fan");
351: COPYDESCR(sc->sc_sensor[13].desc, "System Fan");
352: COPYDESCR(sc->sc_sensor[14].desc, "Aux Fan");
353: }
354: #undef COPYDESCR
355:
356: static void
357: itesio_refresh_temp(struct itesio_softc *sc, envsys_data_t *edata)
358: {
359: int sdata;
360:
361: sdata = itesio_ecreadreg(sc, ITESIO_EC_SENSORTEMPBASE + edata->sensor);
362: /* sensor is not connected or reporting invalid data */
363: if (sdata == 0 || sdata >= 0xfa) {
364: edata->state = ENVSYS_SINVALID;
365: return;
366: }
367:
368: DPRINTF(("%s: sdata[temp%d] 0x%x\n", __func__, edata->sensor, sdata));
369: /* Convert temperature to uK */
370: edata->value_cur = sdata * 1000000 + 273150000;
371: edata->state = ENVSYS_SVALID;
372: }
373:
374: static void
375: itesio_refresh_volts(struct itesio_softc *sc, envsys_data_t *edata)
376: {
377: uint8_t vbatcr = 0;
378: int i, sdata;
379:
380: i = edata->sensor - IT_VOLTSTART_IDX;
381:
382: sdata = itesio_ecreadreg(sc, ITESIO_EC_SENSORVOLTBASE + i);
383: /* not connected */
384: if (sdata == 0 || sdata == 0xff) {
385: edata->state = ENVSYS_SINVALID;
386: return;
387: }
388:
389: /*
390: * update VBAT voltage reading every time we read it, to get
391: * latest value.
392: */
393: if (i == 8) {
394: vbatcr = itesio_ecreadreg(sc, ITESIO_EC_CONFIG);
395: SET(vbatcr, ITESIO_EC_UPDATEVBAT);
396: itesio_ecwritereg(sc, ITESIO_EC_CONFIG, vbatcr);
397: }
398:
399: DPRINTF(("%s: sdata[volt%d] 0x%x\n", __func__, i, sdata));
400:
401: /* voltage returned as (mV << 4) */
402: edata->value_cur = (sdata << 4);
403: /* rfact is (factor * 10^4) */
404: edata->value_cur *= itesio_vrfact[i];
405:
406: if (edata->rfact)
407: edata->value_cur += edata->rfact;
408: else
409: edata->rfact = itesio_vrfact[i];
410:
411: /* division by 10 gets us back to uVDC */
412: edata->value_cur /= 10;
413: edata->state = ENVSYS_SVALID;
414: }
415:
416: static void
417: itesio_refresh_fans(struct itesio_softc *sc, envsys_data_t *edata)
418: {
419: uint8_t mode = 0;
420: uint16_t sdata = 0;
421: int i, divisor, odivisor, ndivisor;
422:
423: i = edata->sensor - IT_FANSTART_IDX;
424: divisor = odivisor = ndivisor = 0;
425:
426: if (sc->sc_chipid == ITESIO_ID8705 || sc->sc_chipid == ITESIO_ID8712) {
427: /*
428: * Use the Fan Tachometer Divisor Register for
429: * IT8705F and IT8712F.
430: */
431: divisor = odivisor = ndivisor =
432: itesio_ecreadreg(sc, ITESIO_EC_FAN_TDR);
433: sdata = itesio_ecreadreg(sc, ITESIO_EC_SENSORFANBASE + i);
434: if (sdata == 0xff) {
435: edata->state = ENVSYS_SINVALID;
436: if (i == 2)
437: ndivisor |= 0x40;
438: else {
439: ndivisor &= ~(7 << (i * 3));
440: ndivisor |= ((divisor + 1) & 7) << (i * 3);
441: }
442: } else {
443: if (i == 2)
444: divisor = divisor & 1 ? 3 : 1;
445:
446: if ((sdata << (divisor & 7)) == 0)
447: edata->state = ENVSYS_SINVALID;
448: else {
449: edata->value_cur =
450: 1350000 / (sdata << (divisor & 7));
451: edata->state = ENVSYS_SVALID;
452: }
453: }
454: DPRINTF(("%s: 8bit sdata[fan%d] 0x%x div: 0x%x\n", __func__,
455: i, sdata, divisor));
456: if (ndivisor != odivisor)
457: itesio_ecwritereg(sc, ITESIO_EC_FAN_TDR, ndivisor);
458: } else {
459: mode = itesio_ecreadreg(sc, ITESIO_EC_FAN16_CER);
460: sdata = itesio_ecreadreg(sc, ITESIO_EC_SENSORFANBASE + i);
461: if (mode & (1 << i))
462: sdata += (itesio_ecreadreg(sc,
463: ITESIO_EC_SENSORFANEXTBASE + i) << 8);
464: edata->state = ENVSYS_SVALID;
465: if (sdata == 0 ||
466: sdata == ((mode & (1 << i)) ? 0xffff : 0xff))
467: edata->state = ENVSYS_SINVALID;
468: else {
469: edata->value_cur = 1350000 / 2 / sdata;
470: edata->state = ENVSYS_SVALID;
471: }
472: DPRINTF(("%s: 16bit sdata[fan%d] 0x%x\n", __func__, i, sdata));
473: }
474: }
475:
476: static void
477: itesio_refresh(struct sysmon_envsys *sme, struct envsys_data *edata)
478: {
479: struct itesio_softc *sc = sme->sme_cookie;
480:
481: if (edata->sensor < IT_VOLTSTART_IDX)
482: itesio_refresh_temp(sc, edata);
483: else if (edata->sensor >= IT_VOLTSTART_IDX &&
484: edata->sensor < IT_FANSTART_IDX)
485: itesio_refresh_volts(sc, edata);
486: else
487: itesio_refresh_fans(sc, edata);
488: }
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