[devices] Celeatica Silverstone add IPMI platform sensor read. (#3591)

* [platform/broadcom] Celeatica Silverstone add IPMI platform sensor read.

* [platform_sensors] Silverstone update temperature sensor description

platform/broadcom/sonic-platform-modules-cel/debian/platform-modules-silverstone.install

@@ -1,3 +1,5 @@
+silverstone/scripts/sensors usr/bin
+silverstone/scripts/platform_sensors.py usr/local/bin
 silverstone/cfg/silverstone-modules.conf etc/modules-load.d
 silverstone/systemd/platform-modules-silverstone.service lib/systemd/system
 silverstone/modules/sonic_platform-1.0-py2-none-any.whl usr/share/sonic/device/x86_64-cel_silverstone-r0

platform/broadcom/sonic-platform-modules-cel/silverstone/scripts/platform_sensors.py

@@ -0,0 +1,173 @@
+#!/usr/bin/python
+#
+# Silverstone platform sensors. This script get the sensor data from BMC 
+# using ipmitool and display them in lm-sensor alike format.
+#
+# The following data is support:
+#  1. Temperature sensors
+#  2. PSUs
+#  3. Fan trays
+
+import sys
+import logging
+import subprocess
+
+IPMI_SDR_CMD = "ipmitool sdr elist"
+MAX_NUM_FANS = 7
+MAX_NUM_PSUS = 2
+
+
+def ipmi_sensor_dump(cmd):
+    ''' Execute ipmitool command return dump output
+        exit if any error occur.
+    '''
+    sensor_dump = ''
+    try:
+        sensor_dump = subprocess.check_output(cmd, shell=True)
+    except subprocess.CalledProcessError as e:
+        logging.error('Error! Failed to execute: {}'.format(cmd))
+        sys.exit(1)
+    return sensor_dump
+
+def get_reading_by_name(sensor_name, sdr_elist_dump):
+    '''
+        Search for the match sensor name, return sensor
+        reading value and unit, return object epmtry string 
+        if search not match.
+
+        The output of sensor dump:
+        TEMP_FAN_U52     | 00h | ok  |  7.1 | 31 degrees C
+        TEMP_FAN_U17     | 01h | ok  |  7.1 | 27 degrees C
+        TEMP_SW_U52      | 02h | ok  |  7.1 | 30 degrees C
+        Fan2_Status      | 07h | ok  | 29.2 | Present
+        Fan2_Front       | 0Eh | ok  | 29.2 | 12000 RPM
+        Fan2_Rear        | 46h | ok  | 29.2 | 14700 RPM
+        PSU2_Status      | 39h | ok  | 10.2 | Presence detected
+        PSU2_Fan         | 3Dh | ok  | 10.2 | 16000 RPM
+        PSU2_VIn         | 3Ah | ok  | 10.2 | 234.30 Volts
+        PSU2_CIn         | 3Bh | ok  | 10.2 | 0.80 Amps
+    '''
+    found = ''
+
+    for line in sdr_elist_dump.split("\n"):
+        if sensor_name in line:
+            found = line.strip()
+            break
+
+    if not found:
+        logging.error('Cannot find sensor name:' + sensor_name)
+
+    else:
+        try:
+            found = found.split('|')[4]
+        except IndexError:
+            logging.error('Cannot get sensor data of:' + sensor_name)
+
+    logging.basicConfig(level=logging.DEBUG)
+    return found
+
+
+def read_temperature_sensors(ipmi_sdr_elist):
+
+    sensor_list = [
+        ('TEMP_FAN_U52',        'Fan Tray Middle Temp'),
+        ('TEMP_FAN_U17',        'Fan Tray Right Temp'),
+        ('TEMP_SW_U52',         'Switchboard Left Inlet Temp'),
+        ('TEMP_SW_U16',         'Switchboard Right Inlet Temp'),
+        ('TEMP_BB_U3',          'Baseboard Temp'),
+        ('TEMP_CPU',            'CPU Internal Temp'),
+        ('TEMP_SW_Internal',    'ASIC Internal Temp'),
+        ('SW_U04_Temp',         'IR3595 Chip Left Temp'),
+        ('SW_U14_Temp',         'IR3595 Chip Right Temp'),
+        ('SW_U4403_Temp',       'IR3584 Chip Temp'),
+    ]
+
+    output = ''
+    sensor_format = '{0:{width}}{1}\n'
+    # Find max length of sensor calling name
+    max_name_width = max(len(sensor[1]) for sensor in sensor_list)
+
+    output += "Temperature Sensors\n"
+    output += "Adapter: IPMI adapter\n"
+    for sensor in sensor_list:
+        reading = get_reading_by_name(sensor[0],ipmi_sdr_elist)
+        output += sensor_format.format('{}:'.format(sensor[1]),
+                                       reading,
+                                       width=str(max_name_width+1))
+    output += '\n'
+    return output
+
+
+def read_fan_sensors(num_fans, ipmi_sdr_elist):
+
+    sensor_list = [
+        ('Fan{}_Status',    'Status'),
+        ('Fan{}_Front',     'Fan {} front'),
+        ('Fan{}_Rear',      'Fan {} rear'),
+    ]
+
+    output = ''
+    sensor_format = '{0:{width}}{1}\n'
+    # Find max length of sensor calling name
+    max_name_width = max(len(sensor[1]) for sensor in sensor_list)
+
+    output += "Fan Trays\n"
+    output += "Adapter: IPMI adapter\n"
+    for fan_num in range(1, num_fans+1):
+        for sensor in sensor_list:
+            ipmi_sensor_name = sensor[0].format(fan_num)
+            display_sensor_name = sensor[1].format(fan_num)
+            reading = get_reading_by_name(ipmi_sensor_name, ipmi_sdr_elist)
+            output += sensor_format.format('{}:'.format(display_sensor_name),
+                                           reading,
+                                           width=str(max_name_width+1))
+    output += '\n'
+    return output
+
+
+def read_psu_sensors(num_psus, ipmi_sdr_elist):
+
+    sensor_list = [
+        ('PSU{}_Status',    'PSU {} Status'),
+        ('PSU{}_Fan',       'PSU {} Fan'),
+        ('PSU{}_VIn',       'PSU {} Input Voltag'),
+        ('PSU{}_CIn',       'PSU {} Input Current'),
+        ('PSU{}_PIn',       'PSU {} Input Power'),
+        ('PSU{}_Temp1',     'PSU {} Temp1'),
+        ('PSU{}_Temp2',     'PSU {} Temp2'),
+        ('PSU{}_VOut',      'PSU {} Output Voltag'),
+        ('PSU{}_COut',      'PSU {} Output Current'),
+        ('PSU{}_POut',      'PSU {} Output Power'),
+    ]
+
+    output = ''
+    sensor_format = '{0:{width}}{1}\n'
+    # Find max length of sensor calling name
+    max_name_width = max(len(sensor[1]) for sensor in sensor_list)
+
+    output += "PSU\n"
+    output += "Adapter: IPMI adapter\n"
+    for psu_num in range(1, num_psus+1):
+        for sensor in sensor_list:
+            ipmi_sensor_name = sensor[0].format(psu_num)
+            display_sensor_name = sensor[1].format(psu_num)
+            reading = get_reading_by_name(ipmi_sensor_name, ipmi_sdr_elist)
+            output += sensor_format.format('{}:'.format(display_sensor_name),
+                                           reading,
+                                           width=str(max_name_width+1))
+    output += '\n'
+    return output
+
+
+def main():
+    output_string = ''
+
+    ipmi_sdr_elist = ipmi_sensor_dump(IPMI_SDR_CMD)
+    output_string += read_temperature_sensors(ipmi_sdr_elist)
+    output_string += read_psu_sensors(MAX_NUM_PSUS, ipmi_sdr_elist)
+    output_string += read_fan_sensors(MAX_NUM_FANS, ipmi_sdr_elist)
+    print(output_string)
+
+
+if __name__ == '__main__':
+    main()

platform/broadcom/sonic-platform-modules-cel/silverstone/scripts/sensors

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+DOCKER_EXEC_FLAGS="i"
+
+# Determine whether stdout is on a terminal
+if [ -t 1 ] ; then
+    DOCKER_EXEC_FLAGS+="t"
+fi
+
+docker exec -$DOCKER_EXEC_FLAGS pmon sensors "$@"
+docker exec -$DOCKER_EXEC_FLAGS pmon platform_sensors.py "$@"