meta-quanta: gsj: Detect dual rotor fan fail
While rpm of dual rotor are lower than critical threshold
of fan, the script would stop phosphor-pid-control.service
and set other rotors pwm to 255 until fail rotor recover,
which test on gsj board pass.
Signed-off-by: Duke Du <Duke.Du@quantatw.com>
Change-Id: Id8d4b9476d8f6783a9b2cf77b0ff4b82cd985a75
diff --git a/meta-gsj/recipes-gsj/detect-fan-fail/files/detect-fan-fail.sh b/meta-gsj/recipes-gsj/detect-fan-fail/files/detect-fan-fail.sh
new file mode 100644
index 0000000..80f1f69
--- /dev/null
+++ b/meta-gsj/recipes-gsj/detect-fan-fail/files/detect-fan-fail.sh
@@ -0,0 +1,58 @@
+#!/bin/bash
+
+# get fan state by d-bus command
+function get_fan_state() {
+ get_property_path='xyz.openbmc_project.Sensor.Threshold.Critical CriticalAlarmLow'
+ fan_state="$(busctl get-property $1 $2 $get_property_path | awk '{print $2}')"
+ echo "$fan_state"
+}
+
+# set fan pwm by d-bus command
+function set_fan_value() {
+ set_property_path='xyz.openbmc_project.Control.FanPwm'
+ busctl set-property $1 $2 $set_property_path Target t 255
+}
+
+fan_tach_path=( '/xyz/openbmc_project/sensors/fan_tach/Fan0_0_RPM'
+ '/xyz/openbmc_project/sensors/fan_tach/Fan0_1_RPM'
+ '/xyz/openbmc_project/sensors/fan_tach/Fan1_0_RPM'
+ '/xyz/openbmc_project/sensors/fan_tach/Fan1_1_RPM'
+ '/xyz/openbmc_project/sensors/fan_tach/Fan2_0_RPM'
+ '/xyz/openbmc_project/sensors/fan_tach/Fan2_1_RPM'
+ )
+
+check_fail_flag=0
+current_fan_state=()
+while true; do
+ hwmon_path="$(mapper get-service ${fan_tach_path[0]})"
+ for i in ${!fan_tach_path[@]};
+ do
+ current_fan_state[$i%2]=$(get_fan_state $hwmon_path ${fan_tach_path[$i]})
+
+ #Compare state of dual rotors with CriticalAlarmLow to check if fan fail
+ if [ ${#current_fan_state[@]} -eq 2 ];then
+ if [ "${current_fan_state[0]}" == "true" ] && \
+ [ "${current_fan_state[1]}" == "true" ] ;then
+ if [ $check_fail_flag -eq 0 ];then
+ systemctl stop phosphor-pid-control
+ for j in ${!fan_tach_path[@]};
+ do
+ #If fan fail is detect, set other fan rpm to pwm 255.
+ set_fan_value $hwmon_path ${fan_tach_path[$j]}
+ check_fail_flag=1
+ done
+ fi
+ current_fan_state=()
+ break
+ fi
+ current_fan_state=()
+ fi
+
+ #fans are going to normal.
+ if [ $i -eq $((${#fan_tach_path[@]}-1)) ] && [ $check_fail_flag -eq 1 ]; then
+ check_fail_flag=0
+ systemctl restart phosphor-pid-control
+ fi
+ done
+ sleep 2
+done