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sonic-buildimage/platform/mellanox/mlnx-platform-api/sonic_platform/thermal.py
Junchao-Mellanox 6348248138
[Mellanox] Add high threshold and high critical threshold support for gearbox (#6206) 
- Why I did it

Add high threshold and high critical threshold support for gearbox

- How I did it

Read gearbox thermal related threshold from sysfs
2020-12-15 16:51:43 -08:00

653 lines
23 KiB
Python
Raw Blame History

#!/usr/bin/env python
#############################################################################
# Mellanox
#
# Module contains an implementation of SONiC Platform Base API and
# provides the thermals data which are available in the platform
#
#############################################################################
try:
from sonic_platform_base.thermal_base import ThermalBase
from sonic_py_common.logger import Logger
from os import listdir
from os.path import isfile, join
import io
import os.path
except ImportError as e:
raise ImportError (str(e) + "- required module not found")
# Global logger class instance
logger = Logger()
THERMAL_DEV_CATEGORY_CPU_CORE = "cpu_core"
THERMAL_DEV_CATEGORY_CPU_PACK = "cpu_pack"
THERMAL_DEV_CATEGORY_MODULE = "module"
THERMAL_DEV_CATEGORY_PSU = "psu"
THERMAL_DEV_CATEGORY_GEARBOX = "gearbox"
THERMAL_DEV_CATEGORY_AMBIENT = "ambient"
THERMAL_DEV_ASIC_AMBIENT = "asic_amb"
THERMAL_DEV_FAN_AMBIENT = "fan_amb"
THERMAL_DEV_PORT_AMBIENT = "port_amb"
THERMAL_DEV_COMEX_AMBIENT = "comex_amb"
THERMAL_DEV_BOARD_AMBIENT = "board_amb"
THERMAL_API_GET_TEMPERATURE = "get_temperature"
THERMAL_API_GET_HIGH_THRESHOLD = "get_high_threshold"
THERMAL_API_GET_HIGH_CRITICAL_THRESHOLD = "get_high_critical_threshold"
THERMAL_API_INVALID_HIGH_THRESHOLD = 0.0
HW_MGMT_THERMAL_ROOT = "/var/run/hw-management/thermal/"
THERMAL_ZONE_ASIC_PATH = "/var/run/hw-management/thermal/mlxsw/"
THERMAL_ZONE_MODULE_PATH = "/var/run/hw-management/thermal/mlxsw-module{}/"
THERMAL_ZONE_GEARBOX_PATH = "/var/run/hw-management/thermal/mlxsw-gearbox{}/"
THERMAL_ZONE_MODE = "thermal_zone_mode"
THERMAL_ZONE_POLICY = "thermal_zone_policy"
THERMAL_ZONE_TEMPERATURE = "thermal_zone_temp"
THERMAL_ZONE_NORMAL_TEMPERATURE = "temp_trip_norm"
MODULE_TEMPERATURE_FAULT_PATH = "/var/run/hw-management/thermal/module{}_temp_fault"
thermal_api_handler_asic = {
THERMAL_API_GET_TEMPERATURE: 'asic',
THERMAL_API_GET_HIGH_THRESHOLD: 'mlxsw/temp_trip_hot',
THERMAL_API_GET_HIGH_CRITICAL_THRESHOLD: 'mlxsw/temp_trip_crit'
}
thermal_api_handler_cpu_core = {
THERMAL_API_GET_TEMPERATURE:"cpu_core{}",
THERMAL_API_GET_HIGH_THRESHOLD:"cpu_core{}_max",
THERMAL_API_GET_HIGH_CRITICAL_THRESHOLD:"cpu_core{}_crit"
}
thermal_api_handler_cpu_pack = {
THERMAL_API_GET_TEMPERATURE:"cpu_pack",
THERMAL_API_GET_HIGH_THRESHOLD:"cpu_pack_max",
THERMAL_API_GET_HIGH_CRITICAL_THRESHOLD:"cpu_pack_crit"
}
thermal_api_handler_module = {
THERMAL_API_GET_TEMPERATURE:"module{}_temp_input",
THERMAL_API_GET_HIGH_THRESHOLD:"module{}_temp_crit",
THERMAL_API_GET_HIGH_CRITICAL_THRESHOLD:"module{}_temp_emergency"
}
thermal_api_handler_psu = {
THERMAL_API_GET_TEMPERATURE:"psu{}_temp",
THERMAL_API_GET_HIGH_THRESHOLD:"psu{}_temp_max",
THERMAL_API_GET_HIGH_CRITICAL_THRESHOLD:None
}
thermal_api_handler_gearbox = {
THERMAL_API_GET_TEMPERATURE:"gearbox{}_temp_input",
THERMAL_API_GET_HIGH_THRESHOLD:"mlxsw-gearbox{}/temp_trip_hot",
THERMAL_API_GET_HIGH_CRITICAL_THRESHOLD:"mlxsw-gearbox{}/temp_trip_crit"
}
thermal_ambient_apis = {
THERMAL_DEV_ASIC_AMBIENT : thermal_api_handler_asic,
THERMAL_DEV_PORT_AMBIENT : "port_amb",
THERMAL_DEV_FAN_AMBIENT : "fan_amb",
THERMAL_DEV_COMEX_AMBIENT : "comex_amb",
THERMAL_DEV_BOARD_AMBIENT : "board_amb"
}
thermal_ambient_name = {
THERMAL_DEV_ASIC_AMBIENT : 'ASIC',
THERMAL_DEV_PORT_AMBIENT : "Ambient Port Side Temp",
THERMAL_DEV_FAN_AMBIENT : "Ambient Fan Side Temp",
THERMAL_DEV_COMEX_AMBIENT : "Ambient COMEX Temp",
THERMAL_DEV_BOARD_AMBIENT : "Ambient Board Temp"
}
thermal_api_handlers = {
THERMAL_DEV_CATEGORY_CPU_CORE : thermal_api_handler_cpu_core,
THERMAL_DEV_CATEGORY_CPU_PACK : thermal_api_handler_cpu_pack,
THERMAL_DEV_CATEGORY_MODULE : thermal_api_handler_module,
THERMAL_DEV_CATEGORY_PSU : thermal_api_handler_psu,
THERMAL_DEV_CATEGORY_GEARBOX : thermal_api_handler_gearbox
}
thermal_name = {
THERMAL_DEV_CATEGORY_CPU_CORE : "CPU Core {} Temp",
THERMAL_DEV_CATEGORY_CPU_PACK : "CPU Pack Temp",
THERMAL_DEV_CATEGORY_MODULE : "xSFP module {} Temp",
THERMAL_DEV_CATEGORY_PSU : "PSU-{} Temp",
THERMAL_DEV_CATEGORY_GEARBOX : "Gearbox {} Temp"
}
thermal_device_categories_all = [
THERMAL_DEV_CATEGORY_AMBIENT,
THERMAL_DEV_CATEGORY_CPU_PACK,
THERMAL_DEV_CATEGORY_CPU_CORE,
THERMAL_DEV_CATEGORY_GEARBOX,
]
thermal_device_categories_singleton = [
THERMAL_DEV_CATEGORY_CPU_PACK,
THERMAL_DEV_CATEGORY_AMBIENT
]
thermal_api_names = [
THERMAL_API_GET_TEMPERATURE,
THERMAL_API_GET_HIGH_THRESHOLD
]
platform_dict_thermal = {'x86_64-mlnx_msn2700-r0': 0, 'x86_64-mlnx_lssn2700-r0':0, 'x86_64-mlnx_msn2740-r0': 3, 'x86_64-mlnx_msn2100-r0': 1, 'x86_64-mlnx_msn2410-r0': 2, 'x86_64-mlnx_msn2010-r0': 4, 'x86_64-mlnx_msn3420-r0':9, 'x86_64-mlnx_msn3700-r0': 5, 'x86_64-mlnx_msn3700c-r0': 6, 'x86_64-mlnx_msn3800-r0': 7, 'x86_64-mlnx_msn4600c-r0':9, 'x86_64-mlnx_msn4700-r0': 8, 'x86_64-mlnx_msn4410-r0': 8}
thermal_profile_list = [
# 2700
{
THERMAL_DEV_CATEGORY_CPU_CORE:(0, 2),
THERMAL_DEV_CATEGORY_MODULE:(1, 32),
THERMAL_DEV_CATEGORY_PSU:(1, 2),
THERMAL_DEV_CATEGORY_CPU_PACK:(0,1),
THERMAL_DEV_CATEGORY_GEARBOX:(0,0),
THERMAL_DEV_CATEGORY_AMBIENT:(0,
[
THERMAL_DEV_ASIC_AMBIENT,
THERMAL_DEV_PORT_AMBIENT,
THERMAL_DEV_FAN_AMBIENT
]
)
},
# 2100
{
THERMAL_DEV_CATEGORY_CPU_CORE:(0, 4),
THERMAL_DEV_CATEGORY_MODULE:(1, 16),
THERMAL_DEV_CATEGORY_PSU:(0, 0),
THERMAL_DEV_CATEGORY_CPU_PACK:(0,0),
THERMAL_DEV_CATEGORY_GEARBOX:(0,0),
THERMAL_DEV_CATEGORY_AMBIENT:(0,
[
THERMAL_DEV_ASIC_AMBIENT,
THERMAL_DEV_PORT_AMBIENT,
THERMAL_DEV_FAN_AMBIENT,
]
)
},
# 2410
{
THERMAL_DEV_CATEGORY_CPU_CORE:(0, 2),
THERMAL_DEV_CATEGORY_MODULE:(1, 56),
THERMAL_DEV_CATEGORY_PSU:(1, 2),
THERMAL_DEV_CATEGORY_CPU_PACK:(0,1),
THERMAL_DEV_CATEGORY_GEARBOX:(0,0),
THERMAL_DEV_CATEGORY_AMBIENT:(0,
[
THERMAL_DEV_ASIC_AMBIENT,
THERMAL_DEV_PORT_AMBIENT,
THERMAL_DEV_FAN_AMBIENT,
]
)
},
# 2740
{
THERMAL_DEV_CATEGORY_CPU_CORE:(0, 4),
THERMAL_DEV_CATEGORY_MODULE:(1, 32),
THERMAL_DEV_CATEGORY_PSU:(1, 2),
THERMAL_DEV_CATEGORY_CPU_PACK:(0,0),
THERMAL_DEV_CATEGORY_GEARBOX:(0,0),
THERMAL_DEV_CATEGORY_AMBIENT:(0,
[
THERMAL_DEV_ASIC_AMBIENT,
THERMAL_DEV_PORT_AMBIENT,
THERMAL_DEV_FAN_AMBIENT,
]
)
},
# 2010
{
THERMAL_DEV_CATEGORY_CPU_CORE:(0, 4),
THERMAL_DEV_CATEGORY_MODULE:(1, 22),
THERMAL_DEV_CATEGORY_PSU:(0, 0),
THERMAL_DEV_CATEGORY_CPU_PACK:(0,0),
THERMAL_DEV_CATEGORY_GEARBOX:(0,0),
THERMAL_DEV_CATEGORY_AMBIENT:(0,
[
THERMAL_DEV_ASIC_AMBIENT,
THERMAL_DEV_PORT_AMBIENT,
THERMAL_DEV_FAN_AMBIENT,
]
)
},
# 3700
{
THERMAL_DEV_CATEGORY_CPU_CORE:(0, 4),
THERMAL_DEV_CATEGORY_MODULE:(1, 32),
THERMAL_DEV_CATEGORY_PSU:(1, 2),
THERMAL_DEV_CATEGORY_CPU_PACK:(0,1),
THERMAL_DEV_CATEGORY_GEARBOX:(0,0),
THERMAL_DEV_CATEGORY_AMBIENT:(0,
[
THERMAL_DEV_ASIC_AMBIENT,
THERMAL_DEV_COMEX_AMBIENT,
THERMAL_DEV_PORT_AMBIENT,
THERMAL_DEV_FAN_AMBIENT
]
)
},
# 3700c
{
THERMAL_DEV_CATEGORY_CPU_CORE:(0, 2),
THERMAL_DEV_CATEGORY_MODULE:(1, 32),
THERMAL_DEV_CATEGORY_PSU:(1, 2),
THERMAL_DEV_CATEGORY_CPU_PACK:(0,1),
THERMAL_DEV_CATEGORY_GEARBOX:(0,0),
THERMAL_DEV_CATEGORY_AMBIENT:(0,
[
THERMAL_DEV_ASIC_AMBIENT,
THERMAL_DEV_COMEX_AMBIENT,
THERMAL_DEV_PORT_AMBIENT,
THERMAL_DEV_FAN_AMBIENT
]
)
},
# 3800
{
THERMAL_DEV_CATEGORY_CPU_CORE:(0, 4),
THERMAL_DEV_CATEGORY_MODULE:(1, 64),
THERMAL_DEV_CATEGORY_PSU:(1, 2),
THERMAL_DEV_CATEGORY_CPU_PACK:(0,1),
THERMAL_DEV_CATEGORY_GEARBOX:(1,32),
THERMAL_DEV_CATEGORY_AMBIENT:(0,
[
THERMAL_DEV_ASIC_AMBIENT,
THERMAL_DEV_COMEX_AMBIENT,
THERMAL_DEV_PORT_AMBIENT,
THERMAL_DEV_FAN_AMBIENT
]
)
},
# 4700
{
THERMAL_DEV_CATEGORY_CPU_CORE:(0, 4),
THERMAL_DEV_CATEGORY_MODULE:(1, 32),
THERMAL_DEV_CATEGORY_PSU:(1, 2),
THERMAL_DEV_CATEGORY_CPU_PACK:(0,1),
THERMAL_DEV_CATEGORY_GEARBOX:(0,0),
THERMAL_DEV_CATEGORY_AMBIENT:(0,
[
THERMAL_DEV_ASIC_AMBIENT,
THERMAL_DEV_COMEX_AMBIENT,
THERMAL_DEV_PORT_AMBIENT,
THERMAL_DEV_FAN_AMBIENT
]
)
},
# 3420
{
THERMAL_DEV_CATEGORY_CPU_CORE:(0, 2),
THERMAL_DEV_CATEGORY_MODULE:(1, 60),
THERMAL_DEV_CATEGORY_PSU:(1, 2),
THERMAL_DEV_CATEGORY_CPU_PACK:(0,1),
THERMAL_DEV_CATEGORY_GEARBOX:(0,0),
THERMAL_DEV_CATEGORY_AMBIENT:(0,
[
THERMAL_DEV_ASIC_AMBIENT,
THERMAL_DEV_COMEX_AMBIENT,
THERMAL_DEV_PORT_AMBIENT,
THERMAL_DEV_FAN_AMBIENT
]
)
},
# 4600C
{
THERMAL_DEV_CATEGORY_CPU_CORE:(0, 4),
THERMAL_DEV_CATEGORY_MODULE:(1, 64),
THERMAL_DEV_CATEGORY_PSU:(1, 2),
THERMAL_DEV_CATEGORY_CPU_PACK:(0,1),
THERMAL_DEV_CATEGORY_GEARBOX:(0,0),
THERMAL_DEV_CATEGORY_AMBIENT:(0,
[
THERMAL_DEV_ASIC_AMBIENT,
THERMAL_DEV_COMEX_AMBIENT,
THERMAL_DEV_PORT_AMBIENT,
THERMAL_DEV_FAN_AMBIENT
]
)
},
# 4410
{
THERMAL_DEV_CATEGORY_CPU_CORE:(0, 4),
THERMAL_DEV_CATEGORY_MODULE:(1, 32),
THERMAL_DEV_CATEGORY_PSU:(1, 2),
THERMAL_DEV_CATEGORY_CPU_PACK:(0,1),
THERMAL_DEV_CATEGORY_GEARBOX:(0,0),
THERMAL_DEV_CATEGORY_AMBIENT:(0,
[
THERMAL_DEV_ASIC_AMBIENT,
THERMAL_DEV_COMEX_AMBIENT,
THERMAL_DEV_PORT_AMBIENT,
THERMAL_DEV_FAN_AMBIENT
]
)
}
]
def initialize_psu_thermals(platform, thermal_list, psu_index, dependency):
tp_index = platform_dict_thermal[platform]
thermal_profile = thermal_profile_list[tp_index]
_, count = thermal_profile[THERMAL_DEV_CATEGORY_PSU]
if count == 0:
return
thermal = Thermal(THERMAL_DEV_CATEGORY_PSU, psu_index, True, 1, dependency)
thermal_list.append(thermal)
def initialize_sfp_thermals(platform, thermal_list, sfp_index):
thermal = Thermal(THERMAL_DEV_CATEGORY_MODULE, sfp_index, True, 1)
thermal_list.append(thermal)
def initialize_chassis_thermals(platform, thermal_list):
# create thermal objects for all categories of sensors
tp_index = platform_dict_thermal[platform]
thermal_profile = thermal_profile_list[tp_index]
Thermal.thermal_profile = thermal_profile
position = 1
for category in thermal_device_categories_all:
if category == THERMAL_DEV_CATEGORY_AMBIENT:
count, ambient_list = thermal_profile[category]
for ambient in ambient_list:
thermal = Thermal(category, ambient, True, position)
thermal_list.append(thermal),
position += 1
else:
start, count = 0, 0
if category in thermal_profile:
start, count = thermal_profile[category]
if count == 0:
continue
if count == 1:
thermal = Thermal(category, 0, False, position)
thermal_list.append(thermal)
position += 1
else:
for index in range(count):
thermal = Thermal(category, start + index, True, position)
thermal_list.append(thermal)
position += 1
class Thermal(ThermalBase):
thermal_profile = None
thermal_algorithm_status = False
def __init__(self, category, index, has_index, position, dependency = None):
"""
index should be a string for category ambient and int for other categories
"""
if category == THERMAL_DEV_CATEGORY_AMBIENT:
self.name = thermal_ambient_name[index]
self.index = index
elif has_index:
self.name = thermal_name[category].format(index)
self.index = index
else:
self.name = thermal_name[category]
self.index = 0
self.category = category
self.position = position
self.temperature = self._get_file_from_api(THERMAL_API_GET_TEMPERATURE)
self.high_threshold = self._get_file_from_api(THERMAL_API_GET_HIGH_THRESHOLD)
self.high_critical_threshold = self._get_file_from_api(THERMAL_API_GET_HIGH_CRITICAL_THRESHOLD)
self.dependency = dependency
def get_name(self):
"""
Retrieves the name of the device
Returns:
string: The name of the device
"""
return self.name
@classmethod
def _read_generic_file(cls, filename, len):
"""
Read a generic file, returns the contents of the file
"""
result = None
try:
with open(filename, 'r') as fileobj:
result = fileobj.read().strip()
except Exception as e:
logger.log_info("Fail to read file {} due to {}".format(filename, repr(e)))
return result
def _get_file_from_api(self, api_name):
if self.category == THERMAL_DEV_CATEGORY_AMBIENT:
handler = thermal_ambient_apis[self.index]
if isinstance(handler, str):
if api_name == THERMAL_API_GET_TEMPERATURE:
filename = thermal_ambient_apis[self.index]
else:
return None
elif isinstance(handler, dict):
filename = handler[api_name]
else:
return None
else:
handler = thermal_api_handlers[self.category][api_name]
if self.category in thermal_device_categories_singleton:
filename = handler
else:
if handler:
filename = handler.format(self.index)
else:
return None
return join(HW_MGMT_THERMAL_ROOT, filename)
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
"""
if self.dependency:
status, hint = self.dependency()
if not status:
logger.log_debug("get_temperature for {} failed due to {}".format(self.name, hint))
return None
value_str = self._read_generic_file(self.temperature, 0)
if value_str is None:
return None
value_float = float(value_str)
if self.category == THERMAL_DEV_CATEGORY_MODULE and value_float == THERMAL_API_INVALID_HIGH_THRESHOLD:
return None
return value_float / 1000.0
def get_high_threshold(self):
"""
Retrieves the high threshold temperature of thermal
Returns:
A float number, the high threshold temperature of thermal in Celsius
up to nearest thousandth of one degree Celsius, e.g. 30.125
"""
if self.high_threshold is None:
return None
if self.dependency:
status, hint = self.dependency()
if not status:
logger.log_debug("get_high_threshold for {} failed due to {}".format(self.name, hint))
return None
value_str = self._read_generic_file(self.high_threshold, 0)
if value_str is None:
return None
value_float = float(value_str)
if self.category == THERMAL_DEV_CATEGORY_MODULE and value_float == THERMAL_API_INVALID_HIGH_THRESHOLD:
return None
return value_float / 1000.0
def get_high_critical_threshold(self):
"""
Retrieves the high critical threshold temperature of thermal
Returns:
A float number, the high critical threshold temperature of thermal in Celsius
up to nearest thousandth of one degree Celsius, e.g. 30.125
"""
if self.high_critical_threshold is None:
return None
if self.dependency:
status, hint = self.dependency()
if not status:
logger.log_debug("get_high_critical_threshold for {} failed due to {}".format(self.name, hint))
return None
value_str = self._read_generic_file(self.high_critical_threshold, 0)
if value_str is None:
return None
value_float = float(value_str)
if self.category == THERMAL_DEV_CATEGORY_MODULE and value_float == THERMAL_API_INVALID_HIGH_THRESHOLD:
return None
return value_float / 1000.0
def get_position_in_parent(self):
"""
Retrieves 1-based relative physical position in parent device
Returns:
integer: The 1-based relative physical position in parent device
"""
return self.position
def is_replaceable(self):
"""
Indicate whether this device is replaceable.
Returns:
bool: True if it is replaceable.
"""
return False
@classmethod
def _write_generic_file(cls, filename, content):
"""
Generic functions to write content to a specified file path if
the content has changed.
"""
try:
with open(filename, 'w+') as file_obj:
origin_content = file_obj.read()
if origin_content != content:
file_obj.write(content)
except Exception as e:
logger.log_info("Fail to write file {} due to {}".format(filename, repr(e)))
@classmethod
def set_thermal_algorithm_status(cls, status, force=True):
"""
Enable/disable kernel thermal algorithm.
When enable kernel thermal algorithm, kernel will adjust fan speed
according to thermal zones temperature. Please note that kernel will
only adjust fan speed when temperature across some "edge", e.g temperature
changes to exceed high threshold.
When disable kernel thermal algorithm, kernel no longer adjust fan speed.
We usually disable the algorithm when we want to set a fix speed. E.g, when
a fan unit is removed from system, we will set fan speed to 100% and disable
the algorithm to avoid it adjust the speed.
Returns:
True if thermal algorithm status changed.
"""
if not cls.thermal_profile:
raise Exception("Fail to get thermal profile for this switch")
if not force and cls.thermal_algorithm_status == status:
return False
cls.thermal_algorithm_status = status
content = "enabled" if status else "disabled"
policy = "step_wise" if status else "user_space"
cls._write_generic_file(join(THERMAL_ZONE_ASIC_PATH, THERMAL_ZONE_MODE), content)
cls._write_generic_file(join(THERMAL_ZONE_ASIC_PATH, THERMAL_ZONE_POLICY), policy)
if THERMAL_DEV_CATEGORY_MODULE in cls.thermal_profile:
start, count = cls.thermal_profile[THERMAL_DEV_CATEGORY_MODULE]
if count != 0:
for index in range(count):
cls._write_generic_file(join(THERMAL_ZONE_MODULE_PATH.format(start + index), THERMAL_ZONE_MODE), content)
cls._write_generic_file(join(THERMAL_ZONE_MODULE_PATH.format(start + index), THERMAL_ZONE_POLICY), policy)
if THERMAL_DEV_CATEGORY_GEARBOX in cls.thermal_profile:
start, count = cls.thermal_profile[THERMAL_DEV_CATEGORY_GEARBOX]
if count != 0:
for index in range(count):
cls._write_generic_file(join(THERMAL_ZONE_GEARBOX_PATH.format(start + index), THERMAL_ZONE_MODE), content)
cls._write_generic_file(join(THERMAL_ZONE_GEARBOX_PATH.format(start + index), THERMAL_ZONE_POLICY), policy)
return True
@classmethod
def check_thermal_zone_temperature(cls):
"""
Check thermal zone current temperature with normal temperature
Returns:
True if all thermal zones current temperature less or equal than normal temperature
"""
if not cls.thermal_profile:
raise Exception("Fail to get thermal profile for this switch")
if not cls._check_thermal_zone_temperature(THERMAL_ZONE_ASIC_PATH):
return False
if THERMAL_DEV_CATEGORY_MODULE in cls.thermal_profile:
start, count = cls.thermal_profile[THERMAL_DEV_CATEGORY_MODULE]
if count != 0:
for index in range(count):
if not cls._check_thermal_zone_temperature(THERMAL_ZONE_MODULE_PATH.format(start + index)):
return False
if THERMAL_DEV_CATEGORY_GEARBOX in cls.thermal_profile:
start, count = cls.thermal_profile[THERMAL_DEV_CATEGORY_GEARBOX]
if count != 0:
for index in range(count):
if not cls._check_thermal_zone_temperature(THERMAL_ZONE_GEARBOX_PATH.format(start + index)):
return False
return True
@classmethod
def _check_thermal_zone_temperature(cls, thermal_zone_path):
normal_temp_path = join(thermal_zone_path, THERMAL_ZONE_NORMAL_TEMPERATURE)
current_temp_path = join(thermal_zone_path, THERMAL_ZONE_TEMPERATURE)
normal = None
current = None
try:
with open(normal_temp_path, 'r') as file_obj:
normal = float(file_obj.read())
with open(current_temp_path, 'r') as file_obj:
current = float(file_obj.read())
return current <= normal
except Exception as e:
logger.log_info("Fail to check thermal zone temperature for file {} due to {}".format(thermal_zone_path, repr(e)))
@classmethod
def check_module_temperature_trustable(cls):
if not cls.thermal_profile:
raise Exception("Fail to get thermal profile for this switch")
start, count = cls.thermal_profile[THERMAL_DEV_CATEGORY_MODULE]
for index in range(count):
fault_file_path = MODULE_TEMPERATURE_FAULT_PATH.format(index + start)
fault = cls._read_generic_file(fault_file_path, 0)
if fault.strip() != '0':
return 'untrust'
return 'trust'
@classmethod
def get_min_amb_temperature(cls):
fan_ambient_path = join(HW_MGMT_THERMAL_ROOT, THERMAL_DEV_FAN_AMBIENT)
port_ambient_path = join(HW_MGMT_THERMAL_ROOT, THERMAL_DEV_PORT_AMBIENT)
# if there is any exception, let it raise
fan_ambient_temp = int(cls._read_generic_file(fan_ambient_path, 0))
port_ambient_temp = int(cls._read_generic_file(port_ambient_path, 0))
return fan_ambient_temp if fan_ambient_temp < port_ambient_temp else port_ambient_temp
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