bd14dd377c
In preparation for the merging of Azure/sonic-platform-common#173, which properly defines class and instance members in the Platform API base classes. It is proper object-oriented methodology to call the base class initializer, even if it is only the default initializer. This also future-proofs the potential addition of custom initializers in the base classes down the road.
237 lines
7.7 KiB
Python
237 lines
7.7 KiB
Python
#############################################################################
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# Celestica
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#
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# Thermal contains an implementation of SONiC Platform Base API and
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# provides the thermal device status which are available in the platform
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#
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#############################################################################
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import os
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import re
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import os.path
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try:
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from sonic_platform_base.thermal_base import ThermalBase
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from .helper import APIHelper
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except ImportError as e:
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raise ImportError(str(e) + "- required module not found")
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THERMAL_INFO = {
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0: {
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"F2B_max": 50,
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"B2F_max": 55,
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"postion": "asic",
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"name": "Front-panel temp sensor 1",
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"i2c_path": "i2c-5/5-0048/hwmon/hwmon1", # u4 system-inlet
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},
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1: {
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"F2B_max": 50,
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"B2F_max": 55,
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"postion": "asic",
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"name": "Front-panel temp sensor 2",
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"i2c_path": "i2c-6/6-0049/hwmon/hwmon2", # u2 system-inlet
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},
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2: {
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"F2B_max": 70,
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"F2B_max_crit": 75,
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"B2F_max": 60,
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"B2F_max_crit": 65,
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"postion": "asic",
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"name": "ASIC temp sensor",
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"i2c_path": "i2c-7/7-004a/hwmon/hwmon3", # u44 bmc56960-on-board
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},
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3: {
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"F2B_max": 70,
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"F2B_max_crit": 75,
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"B2F_max": 70,
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"B2F_max_crit": 75,
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"postion": "cpu",
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"name": "Rear-panel temp sensor 1",
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"i2c_path": "i2c-14/14-0048/hwmon/hwmon4", # u9200 cpu-on-board
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},
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4: {
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"F2B_max": 70,
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"B2F_max": 55,
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"postion": "cpu",
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"name": "Rear-panel temp sensor 2",
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"i2c_path": "i2c-15/15-004e/hwmon/hwmon5" # u9201 system-outlet
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}
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}
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NULL_VAL = "N/A"
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I2C_ADAPTER_PATH = "/sys/class/i2c-adapter"
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class Thermal(ThermalBase):
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"""Platform-specific Thermal class"""
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SS_CONFIG_PATH = "/usr/share/sonic/device/x86_64-cel_seastone-r0/sensors.conf"
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def __init__(self, thermal_index, airflow):
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ThermalBase.__init__(self)
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self.index = thermal_index
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self._api_helper = APIHelper()
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self._airflow = airflow
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self._thermal_info = THERMAL_INFO[self.index]
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self._hwmon_path = "{}/{}".format(I2C_ADAPTER_PATH,
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self._thermal_info["i2c_path"])
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self.name = self.get_name()
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self.postion = self._thermal_info["postion"]
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self.ss_index = 1
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def __get_temp(self, temp_file):
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temp_file_path = os.path.join(self._hwmon_path, temp_file)
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raw_temp = self._api_helper.read_txt_file(temp_file_path)
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temp = float(raw_temp)/1000
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return float("{:.3f}".format(temp))
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def __set_threshold(self, file_name, temperature):
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temp_file_path = os.path.join(self._hwmon_path, file_name)
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try:
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with open(temp_file_path, 'w') as fd:
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fd.write(str(temperature))
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return True
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except IOError:
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return False
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def get_temperature(self):
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"""
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Retrieves current temperature reading from thermal
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Returns:
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A float number of current temperature in Celsius up to nearest thousandth
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of one degree Celsius, e.g. 30.125
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"""
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temp_file = "temp{}_input".format(self.ss_index)
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return self.__get_temp(temp_file)
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def get_high_threshold(self):
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"""
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Retrieves the high threshold temperature of thermal
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Returns:
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A float number, the high threshold temperature of thermal in Celsius
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up to nearest thousandth of one degree Celsius, e.g. 30.125
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"""
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max_crit_key = '{}_max'.format(self._airflow)
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return self._thermal_info.get(max_crit_key, None)
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def get_low_threshold(self):
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"""
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Retrieves the low threshold temperature of thermal
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Returns:
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A float number, the low threshold temperature of thermal in Celsius
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up to nearest thousandth of one degree Celsius, e.g. 30.125
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"""
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return 0.0
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def set_high_threshold(self, temperature):
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"""
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Sets the high threshold temperature of thermal
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Args :
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temperature: A float number up to nearest thousandth of one degree Celsius,
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e.g. 30.125
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Returns:
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A boolean, True if threshold is set successfully, False if not
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"""
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temp_file = "temp{}_max".format(self.ss_index)
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is_set = self.__set_threshold(temp_file, int(temperature*1000))
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file_set = False
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if is_set:
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try:
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with open(self.SS_CONFIG_PATH, 'r+') as f:
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content = f.readlines()
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f.seek(0)
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ss_found = False
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for idx, val in enumerate(content):
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if self.name in val:
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ss_found = True
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elif ss_found and temp_file in val:
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content[idx] = " set {} {}\n".format(
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temp_file, temperature)
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f.writelines(content)
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file_set = True
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break
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except IOError:
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file_set = False
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return is_set & file_set
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def set_low_threshold(self, temperature):
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"""
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Sets the low threshold temperature of thermal
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Args :
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temperature: A float number up to nearest thousandth of one degree Celsius,
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e.g. 30.125
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Returns:
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A boolean, True if threshold is set successfully, False if not
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"""
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return False
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def get_high_critical_threshold(self):
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"""
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Retrieves the high critical threshold temperature of thermal
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Returns:
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A float number, the high critical threshold temperature of thermal in Celsius
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up to nearest thousandth of one degree Celsius, e.g. 30.125
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"""
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max_crit_key = '{}_max_crit'.format(self._airflow)
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return self._thermal_info.get(max_crit_key, None)
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def get_low_critical_threshold(self):
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"""
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Retrieves the low critical threshold temperature of thermal
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Returns:
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A float number, the low critical threshold temperature of thermal in Celsius
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up to nearest thousandth of one degree Celsius, e.g. 30.125
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"""
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return 0.0
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def get_name(self):
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"""
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Retrieves the name of the thermal device
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Returns:
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string: The name of the thermal device
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"""
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return self._thermal_info["name"]
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def get_presence(self):
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"""
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Retrieves the presence of the PSU
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Returns:
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bool: True if PSU is present, False if not
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"""
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temp_file = "temp{}_input".format(self.ss_index)
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temp_file_path = os.path.join(self._hwmon_path, temp_file)
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return os.path.isfile(temp_file_path)
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def get_model(self):
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"""
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Retrieves the model number (or part number) of the device
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Returns:
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string: Model/part number of device
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"""
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return NULL_VAL
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def get_serial(self):
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"""
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Retrieves the serial number of the device
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Returns:
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string: Serial number of device
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"""
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return NULL_VAL
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def get_status(self):
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"""
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Retrieves the operational status of the device
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Returns:
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A boolean value, True if device is operating properly, False if not
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"""
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if not self.get_presence():
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return False
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fault_file = "temp{}_fault".format(self.ss_index)
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fault_file_path = os.path.join(self._hwmon_path, fault_file)
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if not os.path.isfile(fault_file_path):
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return True
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raw_txt = self.__read_txt_file(fault_file_path)
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return int(raw_txt) == 0
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