DellEMC: S5232F support for show system-health command (#8334)

Co-authored-by: Arun LK <Arun_L_K@dell.com>
Why I did it
Support for show system-health command in s5232f

How I did it
Added the configuration, API changes to support system health

How to verify it
Execute "show system-health summary/detail/monitor-list" CLI.

device/dell/x86_64-dellemc_s5232f_c3538-r0/system_health_monitoring_config.json

@@ -0,0 +1,11 @@
+{
+    "services_to_ignore": [],
+    "devices_to_ignore": ["fan.speed"],
+    "user_defined_checkers": [],
+    "polling_interval": 60,
+    "led_color": {
+        "fault"  : "amber",
+        "normal" : "green",
+        "booting": "blinking_green"
+    }
+}

platform/broadcom/sonic-platform-modules-dell/s5232f/sonic_platform/chassis.py

@@ -21,6 +21,7 @@ try:
     from sonic_platform.thermal import Thermal
     from sonic_platform.fan_drawer import FanDrawer
     from sonic_platform.watchdog import Watchdog
+    import sonic_platform.hwaccess as hwaccess
 except ImportError as e:
     raise ImportError(str(e) + "- required module not found")
 
@@ -38,6 +39,21 @@ class Chassis(ChassisBase):
 
     oir_fd = -1
     epoll = -1
+    pci_res = "/sys/bus/pci/devices/0000:04:00.0/resource0"
+    sysled_offset = 0x0024
+    SYSLED_COLOR_TO_REG = {
+        "blinking_green": 0x0,
+        "green"         : 0x10,
+        "amber"         : 0x20,
+        "blinking_amber": 0x30
+        }
+
+    REG_TO_SYSLED_COLOR = {
+        0x0  : "blinking_green",
+        0x10 : "green",
+        0x20 : "amber",
+        0x30 : "blinking_amber"
+        }
 
     _global_port_pres_dict = {}
 
@@ -222,6 +238,40 @@ class Chassis(ChassisBase):
         """
         return self._num_sfps
 
+    def initizalize_system_led(self):
+        self.sys_ledcolor = "green"
+
+    def get_status_led(self):
+        """
+        Gets the current system LED color
+
+        Returns:
+            A string that represents the supported color
+        """
+        val = hwaccess.pci_get_value(self.pci_res, self.sysled_offset)
+        if val != -1:
+            val = val & 0x30
+            return self.REG_TO_SYSLED_COLOR.get(val)
+        return self.sys_ledcolor
+
+    def set_status_led(self, color):
+        """
+        Set system LED status based on the color type passed in the argument.
+        Argument: Color to be set
+        Returns:
+          bool: True is specified color is set, Otherwise return False
+        """
+
+        if color not in list(self.SYSLED_COLOR_TO_REG.keys()):
+            return False
+
+        val = hwaccess.pci_get_value(self.pci_res, self.sysled_offset)
+        val = (val & 0xFFCF) | self.SYSLED_COLOR_TO_REG[color]
+
+        hwaccess.pci_set_value(self.pci_res, val, self.sysled_offset)
+        self.sys_ledcolor = color
+        return True
+
     def get_reboot_cause(self):
         """
         Retrieves the cause of the previous reboot

platform/broadcom/sonic-platform-modules-dell/s5232f/sonic_platform/psu.py

@@ -22,9 +22,11 @@ class Psu(PsuBase):
 
     # { PSU-ID: { Sensor-Name: Sensor-ID } }
     SENSOR_MAPPING = { 1: { "State": 0x31, "Current": 0x39,
-                            "Power": 0x37, "Voltage": 0x38 },
+                            "Power": 0x37, "Voltage": 0x38,
+                            "Temperature": 0xc },
                        2: { "State": 0x32, "Current": 0x3F,
-                            "Power": 0x3D, "Voltage": 0x3E } }
+                            "Power": 0x3D, "Voltage": 0x3E,
+                            "Temperature": 0xd } }
     # ( PSU-ID: FRU-ID }
     FRU_MAPPING = { 1: 1, 2: 2 }
 
@@ -37,6 +39,7 @@ class Psu(PsuBase):
         self.voltage_sensor = IpmiSensor(self.SENSOR_MAPPING[self.index]["Voltage"])
         self.current_sensor = IpmiSensor(self.SENSOR_MAPPING[self.index]["Current"])
         self.power_sensor = IpmiSensor(self.SENSOR_MAPPING[self.index]["Power"])
+        self.temp_sensor = IpmiSensor(self.SENSOR_MAPPING[self.index ]["Temperature"])
         self.fru = IpmiFru(self.FRU_MAPPING[self.index])
 
         self._fan_list.append(Fan(fan_index=self.index, psu_fan=True,
@@ -113,6 +116,56 @@ class Psu(PsuBase):
 
         return float(voltage)
 
+    def get_voltage_low_threshold(self):
+        """
+        Returns PSU low threshold in Volts
+        """
+
+        is_valid, low_threshold = self.voltage_sensor.get_threshold("LowerCritical")
+        if not is_valid:
+            low_threshold = 11.6
+        low_threshold = "{:.2f}".format(low_threshold)
+
+        return float(low_threshold)
+
+    def get_voltage_high_threshold(self):
+        """
+        Returns PSU high threshold in Volts
+        """
+
+        is_valid, high_threshold = self.voltage_sensor.get_threshold("UpperCritical")
+        if not is_valid:
+            high_threshold = 12.8
+        high_threshold = "{:.2f}".format(high_threshold)
+
+        return float(high_threshold)
+
+    def get_temperature(self):
+        """
+        Retrieves current temperature reading from thermal
+
+        Returns:
+            A float number of current temperature in Celsius up to
+            nearest thousandth of one degree Celsius, e.g. 30.125
+        """
+        is_valid, temperature = self.temp_sensor.get_reading()
+        if not is_valid:
+            temperature = 0
+
+        return float(temperature)
+
+    def get_temperature_high_threshold(self):
+        """
+        Returns the high temperature threshold for PSU in Celsius
+        """
+
+        is_valid, high_threshold = self.temp_sensor.get_threshold("UpperCritical")
+        if not is_valid:
+            high_threshold = 105
+        high_threshold = "{:.2f}".format(high_threshold)
+
+        return float(high_threshold)
+
     def get_current(self):
         """
         Retrieves present electric current supplied by PSU