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Adapt smusat(4) to use powermac_thermal. This provides automatic fan

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management on dual- and quad-core Powermac G5s, and the last G5 iMacs.
This commit is contained in:
Nathan Whitehorn 2011-05-28 22:11:22 +00:00
parent ad84e440a6
commit 66e2bfe830
1 changed files with 34 additions and 16 deletions
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50
sys/powerpc/powermac/smusat.c
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@ -43,9 +43,13 @@ __FBSDID("$FreeBSD$");
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/openfirm.h>
#include <powerpc/powermac/powermac_thermal.h>
struct smu_sensor {
struct pmac_therm therm;
device_t dev;
cell_t reg;
char location[32];
enum {
SMU_CURRENT_SENSOR,
SMU_VOLTAGE_SENSOR,
@ -57,6 +61,7 @@ struct smu_sensor {
static int smusat_probe(device_t);
static int smusat_attach(device_t);
static int smusat_sensor_sysctl(SYSCTL_HANDLER_ARGS);
static int smusat_sensor_read(struct smu_sensor *sens);
MALLOC_DEFINE(M_SMUSAT, "smusat", "SMU Sattelite Sensors");
@ -135,14 +140,16 @@ smusat_attach(device_t dev)
char sysctl_name[40], sysctl_desc[40];
const char *units;
sens->dev = dev;
sens->reg = 0;
OF_getprop(child, "reg", &sens->reg, sizeof(sens->reg));
if (sens->reg < 0x30)
continue;
sens->reg -= 0x30;
OF_getprop(child, "location", sens->location,
sizeof(sens->location));
OF_getprop(child, "zone", &sens->therm.zone, sizeof(int));
OF_getprop(child, "location", sens->therm.name,
sizeof(sens->therm.name));
OF_getprop(child, "device_type", type, sizeof(type));
@ -162,17 +169,27 @@ smusat_attach(device_t dev)
continue;
}
for (i = 0; i < strlen(sens->location); i++) {
sysctl_name[i] = tolower(sens->location[i]);
for (i = 0; i < strlen(sens->therm.name); i++) {
sysctl_name[i] = tolower(sens->therm.name[i]);
if (isspace(sysctl_name[i]))
sysctl_name[i] = '_';
}
sysctl_name[i] = 0;
sprintf(sysctl_desc,"%s (%s)", sens->location, units);
sprintf(sysctl_desc,"%s (%s)", sens->therm.name, units);
SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(sensroot_oid), OID_AUTO,
sysctl_name, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, dev,
sc->sc_nsensors, smusat_sensor_sysctl, "I", sysctl_desc);
sc->sc_nsensors, smusat_sensor_sysctl,
(sens->type == SMU_TEMP_SENSOR) ? "IK" : "I", sysctl_desc);
if (sens->type == SMU_TEMP_SENSOR) {
/* Make up some numbers */
sens->therm.target_temp = 500 + 2732; /* 50 C */
sens->therm.max_temp = 900 + 2732; /* 90 C */
sens->therm.read =
(int (*)(struct pmac_therm *))smusat_sensor_read;
pmac_thermal_sensor_register(&sens->therm);
}
sens++;
sc->sc_nsensors++;
@ -198,11 +215,13 @@ smusat_updatecache(device_t dev)
}
static int
smusat_sensor_read(device_t dev, struct smu_sensor *sens, int *val)
smusat_sensor_read(struct smu_sensor *sens)
{
int value;
device_t dev;
struct smusat_softc *sc;
dev = sens->dev;
sc = device_get_softc(dev);
if (time_uptime - sc->sc_last_update > 1)
@ -215,8 +234,8 @@ smusat_sensor_read(device_t dev, struct smu_sensor *sens, int *val)
case SMU_TEMP_SENSOR:
/* 16.16 */
value <<= 10;
/* Kill the .16 */
value >>= 16;
/* From 16.16 to 0.1 C */
value = 10*(value >> 16) + 2732;
break;
case SMU_VOLTAGE_SENSOR:
/* 16.16 */
@ -235,8 +254,7 @@ smusat_sensor_read(device_t dev, struct smu_sensor *sens, int *val)
break;
}
*val = value;
return (0);
return (value);
}
static int
@ -251,9 +269,9 @@ smusat_sensor_sysctl(SYSCTL_HANDLER_ARGS)
sc = device_get_softc(dev);
sens = &sc->sc_sensors[arg2];
error = smusat_sensor_read(dev, sens, &value);
if (error != 0)
return (error);
value = smusat_sensor_read(sens);
if (value < 0)
return (EBUSY);
error = sysctl_handle_int(oidp, &value, 0, req);