static int
smu_get_datablock(device_t dev, int8_t id, uint8_t *buf, size_t len)
{
struct smu_cmd cmd;
uint8_t addr[4];
cmd.cmd = SMU_PARTITION;
cmd.len = 2;
cmd.data[0] = SMU_PARTITION_LATEST;
cmd.data[1] = id;
smu_run_cmd(dev, &cmd, 1);
addr[0] = addr[1] = 0;
addr[2] = cmd.data[0];
addr[3] = cmd.data[1];
cmd.cmd = SMU_MISC;
cmd.len = 7;
cmd.data[0] = SMU_MISC_GET_DATA;
cmd.data[1] = sizeof(addr);
memcpy(&cmd.data[2], addr, sizeof(addr));
cmd.data[6] = len;
smu_run_cmd(dev, &cmd, 1);
memcpy(buf, cmd.data, len);
return (0);
}
static int
smu_fan_set_rpm(struct smu_fan *fan, int rpm)
{
device_t smu = fan->dev;
struct smu_cmd cmd;
int error;
cmd.cmd = SMU_FAN;
error = EIO;
/* Clamp to allowed range */
rpm = max(fan->fan.min_rpm, rpm);
rpm = min(fan->fan.max_rpm, rpm);
/*
* Apple has two fan control mechanisms. We can't distinguish
* them except by seeing if the new one fails. If the new one
* fails, use the old one.
*/
if (!fan->old_style) {
cmd.len = 4;
cmd.data[0] = 0x30;
cmd.data[1] = fan->reg;
cmd.data[2] = (rpm >> 8) & 0xff;
cmd.data[3] = rpm & 0xff;
error = smu_run_cmd(smu, &cmd, 1);
if (error && error != EWOULDBLOCK)
fan->old_style = 1;
}
static int
smu_fan_set_rpm(struct smu_fan *fan, int rpm)
{
device_t smu = fan->dev;
struct smu_cmd cmd;
int error;
cmd.cmd = SMU_FAN;
error = EIO;
/* Clamp to allowed range */
rpm = max(fan->fan.min_rpm, rpm);
rpm = min(fan->fan.max_rpm, rpm);
smu_fan_check_old_style(fan);
if (!fan->old_style) {
cmd.len = 4;
cmd.data[0] = 0x30;
cmd.data[1] = fan->reg;
cmd.data[2] = (rpm >> 8) & 0xff;
cmd.data[3] = rpm & 0xff;
error = smu_run_cmd(smu, &cmd, 1);
if (error && error != EWOULDBLOCK)
fan->old_style = 1;
} else {
static int
smu_fan_check_old_style(struct smu_fan *fan)
{
device_t smu = fan->dev;
struct smu_softc *sc = device_get_softc(smu);
struct smu_cmd cmd;
int error;
if (sc->old_style_fans != -1)
return (sc->old_style_fans);
/*
* Apple has two fan control mechanisms. We can't distinguish
* them except by seeing if the new one fails. If the new one
* fails, use the old one.
*/
cmd.cmd = SMU_FAN;
cmd.len = 2;
cmd.data[0] = 0x31;
cmd.data[1] = fan->reg;
do {
error = smu_run_cmd(smu, &cmd, 1);
} while (error == EWOULDBLOCK);
sc->old_style_fans = (error != 0);
return (sc->old_style_fans);
}
static void
smu_slew_cpu_voltage(device_t dev, int to)
{
struct smu_cmd cmd;
cmd.cmd = SMU_POWER;
cmd.len = 8;
cmd.data[0] = 'V';
cmd.data[1] = 'S';
cmd.data[2] = 'L';
cmd.data[3] = 'E';
cmd.data[4] = 'W';
cmd.data[5] = 0xff;
cmd.data[6] = 1;
cmd.data[7] = to;
smu_run_cmd(dev, &cmd, 1);
}