static void cpu_fans_tick_split(void)
{
int err, cpu;
s32 intake, temp, power, t_max = 0;
DBG_LOTS("* cpu fans_tick_split()\n");
for (cpu = 0; cpu < nr_chips; ++cpu) {
struct wf_cpu_pid_state *sp = &cpu_pid[cpu];
/* Read current speed */
wf_control_get(cpu_rear_fans[cpu], &sp->target);
DBG_LOTS(" CPU%d: cur_target = %d RPM\n", cpu, sp->target);
err = read_one_cpu_vals(cpu, &temp, &power);
if (err) {
failure_state |= FAILURE_SENSOR;
cpu_max_all_fans();
return;
}
/* Keep track of highest temp */
t_max = max(t_max, temp);
/* Handle possible overtemps */
if (cpu_check_overtemp(t_max))
return;
/* Run PID */
wf_cpu_pid_run(sp, power, temp);
DBG_LOTS(" CPU%d: target = %d RPM\n", cpu, sp->target);
/* Apply result directly to exhaust fan */
err = wf_control_set(cpu_rear_fans[cpu], sp->target);
if (err) {
pr_warning("wf_pm72: Fan %s reports error %d\n",
cpu_rear_fans[cpu]->name, err);
failure_state |= FAILURE_FAN;
break;
}
/* Scale result for intake fan */
intake = (sp->target * CPU_INTAKE_SCALE) >> 16;
DBG_LOTS(" CPU%d: intake = %d RPM\n", cpu, intake);
err = wf_control_set(cpu_front_fans[cpu], intake);
if (err) {
pr_warning("wf_pm72: Fan %s reports error %d\n",
cpu_front_fans[cpu]->name, err);
failure_state |= FAILURE_FAN;
break;
}
}
}
static void slots_fan_tick(void)
{
s32 temp;
int speed;
int err;
if (!slots_fan || !slots_temp || !slots_tick)
return;
if (--slots_tick > 0)
return;
slots_tick = slots_pid.param.interval;
DBG_LOTS("* slots fans tick\n");
err = wf_sensor_get(slots_temp, &temp);
if (err) {
pr_warning("wf_rm31: slots temp sensor error %d\n", err);
failure_state |= FAILURE_SENSOR;
wf_control_set_max(slots_fan);
return;
}
speed = wf_pid_run(&slots_pid, temp);
DBG_LOTS("slots PID temp=%d.%.3d speed=%d\n",
FIX32TOPRINT(temp), speed);
slots_speed = speed;
err = wf_control_set(slots_fan, speed);
if (err) {
printk(KERN_WARNING "windfarm: slots bay fan error %d\n", err);
failure_state |= FAILURE_FAN;
}
}
static void pm72_tick(void)
{
int i, last_failure;
if (!started) {
started = 1;
printk(KERN_INFO "windfarm: CPUs control loops started.\n");
for (i = 0; i < nr_chips; ++i) {
if (cpu_setup_pid(i) < 0) {
failure_state = FAILURE_PERM;
set_fail_state();
break;
}
}
DBG_LOTS("cpu_all_tmax=%d.%03d\n", FIX32TOPRINT(cpu_all_tmax));
backside_setup_pid();
drives_setup_pid();
/*
* We don't have the right stuff to drive the PCI fan
* so we fix it to a default value
*/
wf_control_set(slots_fan, SLOTS_FAN_DEFAULT_PWM);
#ifdef HACKED_OVERTEMP
cpu_all_tmax = 60 << 16;
#endif
}
/* Permanent failure, bail out */
if (failure_state & FAILURE_PERM)
return;
/*
* Clear all failure bits except low overtemp which will be eventually
* cleared by the control loop itself
*/
last_failure = failure_state;
failure_state &= FAILURE_LOW_OVERTEMP;
if (cpu_pid_combined)
cpu_fans_tick_combined();
else
cpu_fans_tick_split();
backside_fan_tick();
drives_fan_tick();
DBG_LOTS(" last_failure: 0x%x, failure_state: %x\n",
last_failure, failure_state);
/* Check for failures. Any failure causes cpufreq clamping */
if (failure_state && last_failure == 0 && cpufreq_clamp)
wf_control_set_max(cpufreq_clamp);
if (failure_state == 0 && last_failure && cpufreq_clamp)
wf_control_set_min(cpufreq_clamp);
/* That's it for now, we might want to deal with other failures
* differently in the future though
*/
}
static void backside_fan_tick(void)
{
s32 temp, dtemp;
int speed, dspeed, fan_min;
int err;
if (!backside_fan || !backside_temp || !dimms_temp || !backside_tick)
return;
if (--backside_tick > 0)
return;
backside_tick = backside_pid.param.interval;
DBG_LOTS("* backside fans tick\n");
/* Update fan speed from actual fans */
err = wf_control_get(backside_fan, &speed);
if (!err)
backside_pid.target = speed;
err = wf_sensor_get(backside_temp, &temp);
if (err) {
printk(KERN_WARNING "windfarm: U3 temp sensor error %d\n",
err);
failure_state |= FAILURE_SENSOR;
wf_control_set_max(backside_fan);
return;
}
speed = wf_pid_run(&backside_pid, temp);
DBG_LOTS("backside PID temp=%d.%.3d speed=%d\n",
FIX32TOPRINT(temp), speed);
err = wf_sensor_get(dimms_temp, &dtemp);
if (err) {
printk(KERN_WARNING "windfarm: DIMMs temp sensor error %d\n",
err);
failure_state |= FAILURE_SENSOR;
wf_control_set_max(backside_fan);
return;
}
dspeed = wf_pid_run(&dimms_pid, dtemp);
dimms_output_clamp = dspeed;
fan_min = (dspeed * 100) / 14000;
fan_min = max(fan_min, backside_param.min);
speed = max(speed, fan_min);
err = wf_control_set(backside_fan, speed);
if (err) {
printk(KERN_WARNING "windfarm: backside fan error %d\n", err);
failure_state |= FAILURE_FAN;
}
}
static void cpu_fans_tick(void)
{
int err, cpu, i;
s32 speed, temp, power, t_max = 0;
DBG_LOTS("* cpu fans_tick_split()\n");
for (cpu = 0; cpu < nr_chips; ++cpu) {
struct wf_cpu_pid_state *sp = &cpu_pid[cpu];
/* Read current speed */
wf_control_get(cpu_fans[cpu][0], &sp->target);
err = read_one_cpu_vals(cpu, &temp, &power);
if (err) {
failure_state |= FAILURE_SENSOR;
cpu_max_all_fans();
return;
}
/* Keep track of highest temp */
t_max = max(t_max, temp);
/* Handle possible overtemps */
if (cpu_check_overtemp(t_max))
return;
/* Run PID */
wf_cpu_pid_run(sp, power, temp);
DBG_LOTS(" CPU%d: target = %d RPM\n", cpu, sp->target);
/* Apply DIMMs clamp */
speed = max(sp->target, dimms_output_clamp);
/* Apply result to all cpu fans */
for (i = 0; i < 3; i++) {
err = wf_control_set(cpu_fans[cpu][i], speed);
if (err) {
pr_warning("wf_rm31: Fan %s reports error %d\n",
cpu_fans[cpu][i]->name, err);
failure_state |= FAILURE_FAN;
}
}
}
}
static void backside_fan_tick(void)
{
s32 temp;
int speed;
int err;
if (!backside_fan || !backside_temp || !backside_tick)
return;
if (--backside_tick > 0)
return;
backside_tick = backside_pid.param.interval;
DBG_LOTS("* backside fans tick\n");
/* Update fan speed from actual fans */
err = wf_control_get(backside_fan, &speed);
if (!err)
backside_pid.target = speed;
err = wf_sensor_get(backside_temp, &temp);
if (err) {
printk(KERN_WARNING "windfarm: U4 temp sensor error %d\n",
err);
failure_state |= FAILURE_SENSOR;
wf_control_set_max(backside_fan);
return;
}
speed = wf_pid_run(&backside_pid, temp);
DBG_LOTS("backside PID temp=%d.%.3d speed=%d\n",
FIX32TOPRINT(temp), speed);
err = wf_control_set(backside_fan, speed);
if (err) {
printk(KERN_WARNING "windfarm: backside fan error %d\n", err);
failure_state |= FAILURE_FAN;
}
}
static void drives_fan_tick(void)
{
s32 temp;
int speed;
int err;
if (!drives_fan || !drives_temp || !drives_tick)
return;
if (--drives_tick > 0)
return;
drives_tick = drives_pid.param.interval;
DBG_LOTS("* drives fans tick\n");
/* Update fan speed from actual fans */
err = wf_control_get(drives_fan, &speed);
if (!err)
drives_pid.target = speed;
err = wf_sensor_get(drives_temp, &temp);
if (err) {
pr_warning("wf_pm72: drive bay temp sensor error %d\n", err);
failure_state |= FAILURE_SENSOR;
wf_control_set_max(drives_fan);
return;
}
speed = wf_pid_run(&drives_pid, temp);
DBG_LOTS("drives PID temp=%d.%.3d speed=%d\n",
FIX32TOPRINT(temp), speed);
err = wf_control_set(drives_fan, speed);
if (err) {
printk(KERN_WARNING "windfarm: drive bay fan error %d\n", err);
failure_state |= FAILURE_FAN;
}
}
static void wf_smu_create_slots_fans(void)
{
struct wf_pid_param param = {
.interval = 1,
.history_len = 8,
.gd = 0x00000000,
.gp = 0x00000000,
.gr = 0x00020000,
.itarget = 0x00000000
};
/* Alloc & initialize state */
wf_smu_slots_fans = kmalloc(sizeof(struct wf_smu_slots_fans_state),
GFP_KERNEL);
if (wf_smu_slots_fans == NULL) {
printk(KERN_WARNING "windfarm: Memory allocation error"
" max fan speed\n");
goto fail;
}
wf_smu_slots_fans->ticks = 1;
/* Fill PID params */
param.additive = (fan_slots->type == WF_CONTROL_RPM_FAN);
param.min = wf_control_get_min(fan_slots);
param.max = wf_control_get_max(fan_slots);
wf_pid_init(&wf_smu_slots_fans->pid, ¶m);
DBG("wf: Slots Fan control initialized.\n");
DBG(" itarged=%d.%03d, min=%d RPM, max=%d RPM\n",
FIX32TOPRINT(param.itarget), param.min, param.max);
return;
fail:
if (fan_slots)
wf_control_set_max(fan_slots);
}
static void wf_smu_slots_fans_tick(struct wf_smu_slots_fans_state *st)
{
s32 new_setpoint, power;
int rc;
if (--st->ticks != 0) {
if (wf_smu_readjust)
goto readjust;
return;
}
st->ticks = st->pid.param.interval;
rc = wf_sensor_get(sensor_slots_power, &power);
if (rc) {
printk(KERN_WARNING "windfarm: Slots power sensor error %d\n",
rc);
wf_smu_failure_state |= FAILURE_SENSOR;
return;
}
DBG("wf_smu: Slots Fans tick ! Slots power: %d.%03d\n",
FIX32TOPRINT(power));
#if 0 /* Check what makes a good overtemp condition */
if (power > (st->pid.param.itarget + 0x50000))
wf_smu_failure_state |= FAILURE_OVERTEMP;
#endif
new_setpoint = wf_pid_run(&st->pid, power);
DBG("wf_smu: new_setpoint: %d\n", (int)new_setpoint);
if (st->setpoint == new_setpoint)
return;
st->setpoint = new_setpoint;
readjust:
if (fan_slots && wf_smu_failure_state == 0) {
rc = wf_control_set(fan_slots, st->setpoint);
if (rc) {
printk(KERN_WARNING "windfarm: Slots fan error %d\n",
rc);
wf_smu_failure_state |= FAILURE_FAN;
}
}
}
static void wf_smu_create_drive_fans(void)
{
struct wf_pid_param param = {
.interval = 5,
.history_len = 2,
.gd = 0x01e00000,
.gp = 0x00500000,
.gr = 0x00000000,
.itarget = 0x00200000,
};
/* Alloc & initialize state */
wf_smu_drive_fans = kmalloc(sizeof(struct wf_smu_drive_fans_state),
GFP_KERNEL);
if (wf_smu_drive_fans == NULL) {
printk(KERN_WARNING "windfarm: Memory allocation error"
" max fan speed\n");
goto fail;
}
wf_smu_drive_fans->ticks = 1;
/* Fill PID params */
param.additive = (fan_hd->type == WF_CONTROL_RPM_FAN);
param.min = wf_control_get_min(fan_hd);
param.max = wf_control_get_max(fan_hd);
wf_pid_init(&wf_smu_drive_fans->pid, ¶m);
DBG("wf: Drive Fan control initialized.\n");
DBG(" itarged=%d.%03d, min=%d RPM, max=%d RPM\n",
FIX32TOPRINT(param.itarget), param.min, param.max);
return;
fail:
if (fan_hd)
wf_control_set_max(fan_hd);
}
static void wf_smu_drive_fans_tick(struct wf_smu_drive_fans_state *st)
{
s32 new_setpoint, temp;
int rc;
if (--st->ticks != 0) {
if (wf_smu_readjust)
goto readjust;
return;
}
st->ticks = st->pid.param.interval;
rc = wf_sensor_get(sensor_hd_temp, &temp);
if (rc) {
printk(KERN_WARNING "windfarm: HD temp sensor error %d\n",
rc);
wf_smu_failure_state |= FAILURE_SENSOR;
return;
}
DBG("wf_smu: Drive Fans tick ! HD temp: %d.%03d\n",
FIX32TOPRINT(temp));
if (temp > (st->pid.param.itarget + 0x50000))
wf_smu_failure_state |= FAILURE_OVERTEMP;
new_setpoint = wf_pid_run(&st->pid, temp);
DBG("wf_smu: new_setpoint: %d\n", (int)new_setpoint);
if (st->setpoint == new_setpoint)
return;
st->setpoint = new_setpoint;
readjust:
if (fan_hd && wf_smu_failure_state == 0) {
rc = wf_control_set(fan_hd, st->setpoint);
if (rc) {
printk(KERN_WARNING "windfarm: HD fan error %d\n",
rc);
wf_smu_failure_state |= FAILURE_FAN;
}
}
}
static void wf_smu_cpu_fans_tick(struct wf_smu_cpu_fans_state *st)
{
s32 new_setpoint, temp, power;
int rc;
if (--st->ticks != 0) {
if (wf_smu_readjust)
goto readjust;
return;
}
st->ticks = WF_SMU_CPU_FANS_INTERVAL;
rc = wf_sensor_get(sensor_cpu_temp, &temp);
if (rc) {
printk(KERN_WARNING "windfarm: CPU temp sensor error %d\n",
rc);
wf_smu_failure_state |= FAILURE_SENSOR;
return;
}
rc = wf_sensor_get(sensor_cpu_power, &power);
if (rc) {
printk(KERN_WARNING "windfarm: CPU power sensor error %d\n",
rc);
wf_smu_failure_state |= FAILURE_SENSOR;
return;
}
DBG("wf_smu: CPU Fans tick ! CPU temp: %d.%03d, power: %d.%03d\n",
FIX32TOPRINT(temp), FIX32TOPRINT(power));
#ifdef HACKED_OVERTEMP
if (temp > 0x4a0000)
wf_smu_failure_state |= FAILURE_OVERTEMP;
#else
if (temp > st->pid.param.tmax)
wf_smu_failure_state |= FAILURE_OVERTEMP;
#endif
new_setpoint = wf_cpu_pid_run(&st->pid, power, temp);
DBG("wf_smu: new_setpoint: %d RPM\n", (int)new_setpoint);
if (st->cpu_setpoint == new_setpoint)
return;
st->cpu_setpoint = new_setpoint;
readjust:
if (fan_cpu_main && wf_smu_failure_state == 0) {
rc = wf_control_set(fan_cpu_main, st->cpu_setpoint);
if (rc) {
printk(KERN_WARNING "windfarm: CPU main fan"
" error %d\n", rc);
wf_smu_failure_state |= FAILURE_FAN;
}
}
if (fan_cpu_second && wf_smu_failure_state == 0) {
rc = wf_control_set(fan_cpu_second, st->cpu_setpoint);
if (rc) {
printk(KERN_WARNING "windfarm: CPU second fan"
" error %d\n", rc);
wf_smu_failure_state |= FAILURE_FAN;
}
}
if (fan_cpu_third && wf_smu_failure_state == 0) {
rc = wf_control_set(fan_cpu_third, st->cpu_setpoint);
if (rc) {
printk(KERN_WARNING "windfarm: CPU third fan"
" error %d\n", rc);
wf_smu_failure_state |= FAILURE_FAN;
}
}
}
static void cpu_fans_tick_combined(void)
{
s32 temp0, power0, temp1, power1, t_max = 0;
s32 temp, power, intake, pump;
struct wf_control *pump0, *pump1;
struct wf_cpu_pid_state *sp = &cpu_pid[0];
int err, cpu;
DBG_LOTS("* cpu fans_tick_combined()\n");
/* Read current speed from cpu 0 */
wf_control_get(cpu_rear_fans[0], &sp->target);
DBG_LOTS(" CPUs: cur_target = %d RPM\n", sp->target);
/* Read values for both CPUs */
err = read_one_cpu_vals(0, &temp0, &power0);
if (err) {
failure_state |= FAILURE_SENSOR;
cpu_max_all_fans();
return;
}
err = read_one_cpu_vals(1, &temp1, &power1);
if (err) {
failure_state |= FAILURE_SENSOR;
cpu_max_all_fans();
return;
}
/* Keep track of highest temp */
t_max = max(t_max, max(temp0, temp1));
/* Handle possible overtemps */
if (cpu_check_overtemp(t_max))
return;
/* Use the max temp & power of both */
temp = max(temp0, temp1);
power = max(power0, power1);
/* Run PID */
wf_cpu_pid_run(sp, power, temp);
/* Scale result for intake fan */
intake = (sp->target * CPU_INTAKE_SCALE) >> 16;
/* Same deal with pump speed */
pump0 = cpu_pumps[0];
pump1 = cpu_pumps[1];
if (!pump0) {
pump0 = pump1;
pump1 = NULL;
}
pump = (sp->target * wf_control_get_max(pump0)) /
cpu_mpu_data[0]->rmaxn_exhaust_fan;
DBG_LOTS(" CPUs: target = %d RPM\n", sp->target);
DBG_LOTS(" CPUs: intake = %d RPM\n", intake);
DBG_LOTS(" CPUs: pump = %d RPM\n", pump);
for (cpu = 0; cpu < nr_chips; cpu++) {
err = wf_control_set(cpu_rear_fans[cpu], sp->target);
if (err) {
pr_warning("wf_pm72: Fan %s reports error %d\n",
cpu_rear_fans[cpu]->name, err);
failure_state |= FAILURE_FAN;
}
err = wf_control_set(cpu_front_fans[cpu], intake);
if (err) {
pr_warning("wf_pm72: Fan %s reports error %d\n",
cpu_front_fans[cpu]->name, err);
failure_state |= FAILURE_FAN;
}
err = 0;
if (cpu_pumps[cpu])
err = wf_control_set(cpu_pumps[cpu], pump);
if (err) {
pr_warning("wf_pm72: Pump %s reports error %d\n",
cpu_pumps[cpu]->name, err);
failure_state |= FAILURE_FAN;
}
}
}
