306 lines
9.6 KiB
Python
306 lines
9.6 KiB
Python
#!/usr/bin/env python
|
|
|
|
#############################################################################
|
|
# Mellanox
|
|
#
|
|
# Module contains an implementation of SONiC Platform Base API and
|
|
# provides the PSUs status which are available in the platform
|
|
#
|
|
#############################################################################
|
|
|
|
try:
|
|
import os.path
|
|
from sonic_platform_base.psu_base import PsuBase
|
|
from sonic_daemon_base.daemon_base import Logger
|
|
from sonic_platform.fan import Fan
|
|
from .led import PsuLed, SharedLed, ComponentFaultyIndicator
|
|
from .device_data import DEVICE_DATA
|
|
except ImportError as e:
|
|
raise ImportError (str(e) + "- required module not found")
|
|
|
|
|
|
# Global logger class instance
|
|
logger = Logger()
|
|
|
|
psu_list = []
|
|
|
|
PSU_CURRENT = "current"
|
|
PSU_VOLTAGE = "voltage"
|
|
PSU_POWER = "power"
|
|
|
|
# in most platforms the file psuX_curr, psuX_volt and psuX_power contain current, voltage and power data respectively.
|
|
# but there are exceptions which will be handled by the following dictionary
|
|
|
|
platform_dict_psu = {'x86_64-mlnx_msn3700-r0': 1, 'x86_64-mlnx_msn3700c-r0': 1, 'x86_64-mlnx_msn3800-r0': 1, 'x86_64-mlnx_msn4700-r0': 1}
|
|
|
|
psu_profile_list = [
|
|
# default filename convention
|
|
{
|
|
PSU_CURRENT : "power/psu{}_curr",
|
|
PSU_VOLTAGE : "power/psu{}_volt",
|
|
PSU_POWER : "power/psu{}_power"
|
|
},
|
|
# for 3420, 3700, 3700c, 3800, 4700
|
|
{
|
|
PSU_CURRENT : "power/psu{}_curr",
|
|
PSU_VOLTAGE : "power/psu{}_volt_out2",
|
|
PSU_POWER : "power/psu{}_power"
|
|
}
|
|
]
|
|
|
|
class Psu(PsuBase):
|
|
"""Platform-specific Psu class"""
|
|
|
|
shared_led = None
|
|
|
|
def __init__(self, psu_index, platform):
|
|
global psu_list
|
|
PsuBase.__init__(self)
|
|
# PSU is 1-based on Mellanox platform
|
|
self.index = psu_index + 1
|
|
psu_list.append(self.index)
|
|
self.psu_path = "/var/run/hw-management/"
|
|
psu_oper_status = "thermal/psu{}_pwr_status".format(self.index)
|
|
#psu_oper_status should always be present for all platforms
|
|
self.psu_oper_status = os.path.join(self.psu_path, psu_oper_status)
|
|
self._name = "PSU{}".format(psu_index + 1)
|
|
|
|
if platform in platform_dict_psu:
|
|
filemap = psu_profile_list[platform_dict_psu[platform]]
|
|
else:
|
|
filemap = psu_profile_list[0]
|
|
|
|
self.psu_data = DEVICE_DATA[platform]['psus']
|
|
|
|
if not self.psu_data['hot_swappable']:
|
|
self.always_present = True
|
|
self.psu_voltage = None
|
|
self.psu_current = None
|
|
self.psu_power = None
|
|
self.psu_presence = None
|
|
self.psu_temp = None
|
|
self.psu_temp_threshold = None
|
|
else:
|
|
self.always_present = False
|
|
psu_voltage = filemap[PSU_VOLTAGE].format(self.index)
|
|
psu_voltage = os.path.join(self.psu_path, psu_voltage)
|
|
self.psu_voltage = psu_voltage
|
|
|
|
psu_current = filemap[PSU_CURRENT].format(self.index)
|
|
psu_current = os.path.join(self.psu_path, psu_current)
|
|
self.psu_current = psu_current
|
|
|
|
psu_power = filemap[PSU_POWER].format(self.index)
|
|
psu_power = os.path.join(self.psu_path, psu_power)
|
|
self.psu_power = psu_power
|
|
|
|
psu_presence = "thermal/psu{}_status".format(self.index)
|
|
psu_presence = os.path.join(self.psu_path, psu_presence)
|
|
self.psu_presence = psu_presence
|
|
|
|
self.psu_temp = os.path.join(self.psu_path, 'thermal/psu{}_temp'.format(self.index))
|
|
self.psu_temp_threshold = os.path.join(self.psu_path, 'thermal/psu{}_temp_max'.format(self.index))
|
|
|
|
# unplugable PSU has no FAN
|
|
if self.psu_data['hot_swappable']:
|
|
fan = Fan(psu_index, None, True)
|
|
self._fan_list.append(fan)
|
|
|
|
if self.psu_data['led_num'] == 1:
|
|
self.led = ComponentFaultyIndicator(Psu.get_shared_led())
|
|
else: # 2010/2100
|
|
self.led = PsuLed(self.index)
|
|
|
|
|
|
def get_name(self):
|
|
return self._name
|
|
|
|
|
|
def _read_generic_file(self, filename, len):
|
|
"""
|
|
Read a generic file, returns the contents of the file
|
|
"""
|
|
result = 0
|
|
try:
|
|
with open(filename, 'r') as fileobj:
|
|
result = int(fileobj.read().strip())
|
|
except Exception as e:
|
|
logger.log_info("Fail to read file {} due to {}".format(filename, repr(e)))
|
|
return result
|
|
|
|
|
|
def get_powergood_status(self):
|
|
"""
|
|
Retrieves the operational status of power supply unit (PSU) defined
|
|
|
|
Returns:
|
|
bool: True if PSU is operating properly, False if not
|
|
"""
|
|
status = self._read_generic_file(os.path.join(self.psu_path, self.psu_oper_status), 0)
|
|
|
|
return status == 1
|
|
|
|
|
|
def get_presence(self):
|
|
"""
|
|
Retrieves the presence status of power supply unit (PSU) defined
|
|
|
|
Returns:
|
|
bool: True if PSU is present, False if not
|
|
"""
|
|
if self.always_present:
|
|
return self.always_present
|
|
else:
|
|
status = self._read_generic_file(self.psu_presence, 0)
|
|
return status == 1
|
|
|
|
|
|
def get_voltage(self):
|
|
"""
|
|
Retrieves current PSU voltage output
|
|
|
|
Returns:
|
|
A float number, the output voltage in volts,
|
|
e.g. 12.1
|
|
"""
|
|
if self.psu_voltage is not None and self.get_powergood_status():
|
|
voltage = self._read_generic_file(self.psu_voltage, 0)
|
|
return float(voltage) / 1000
|
|
else:
|
|
return None
|
|
|
|
|
|
def get_current(self):
|
|
"""
|
|
Retrieves present electric current supplied by PSU
|
|
|
|
Returns:
|
|
A float number, the electric current in amperes, e.g 15.4
|
|
"""
|
|
if self.psu_current is not None and self.get_powergood_status():
|
|
amperes = self._read_generic_file(self.psu_current, 0)
|
|
return float(amperes) / 1000
|
|
else:
|
|
return None
|
|
|
|
def get_power(self):
|
|
"""
|
|
Retrieves current energy supplied by PSU
|
|
|
|
Returns:
|
|
A float number, the power in watts, e.g. 302.6
|
|
"""
|
|
if self.psu_power is not None and self.get_powergood_status():
|
|
power = self._read_generic_file(self.psu_power, 0)
|
|
return float(power) / 1000000
|
|
else:
|
|
return None
|
|
|
|
def set_status_led(self, color):
|
|
"""
|
|
Sets the state of the PSU status LED
|
|
|
|
Args:
|
|
color: A string representing the color with which to set the
|
|
PSU status LED
|
|
|
|
Returns:
|
|
bool: True if status LED state is set successfully, False if not
|
|
|
|
Notes:
|
|
Only one led for all PSUs.
|
|
"""
|
|
return self.led.set_status(color)
|
|
|
|
|
|
def get_status_led(self):
|
|
"""
|
|
Gets the state of the PSU status LED
|
|
|
|
Returns:
|
|
A string, one of the predefined STATUS_LED_COLOR_* strings above
|
|
"""
|
|
if self.psu_data['led_num'] == 1:
|
|
return Psu.get_shared_led().get_status()
|
|
else:
|
|
return self.led.get_status()
|
|
|
|
|
|
def get_power_available_status(self):
|
|
"""
|
|
Gets the power available status
|
|
|
|
Returns:
|
|
True if power is present and power on.
|
|
False and "absence of PSU" if power is not present.
|
|
False and "absence of power" if power is present but not power on.
|
|
"""
|
|
if not self.get_presence():
|
|
return False, "absence of PSU"
|
|
elif not self.get_powergood_status():
|
|
return False, "absence of power"
|
|
else:
|
|
return True, ""
|
|
|
|
@classmethod
|
|
def get_shared_led(cls):
|
|
if not cls.shared_led:
|
|
cls.shared_led = SharedLed(PsuLed(None))
|
|
return cls.shared_led
|
|
|
|
def get_temperature(self):
|
|
"""
|
|
Retrieves current temperature reading from PSU
|
|
|
|
Returns:
|
|
A float number of current temperature in Celsius up to nearest thousandth
|
|
of one degree Celsius, e.g. 30.125
|
|
"""
|
|
if self.psu_temp is not None and self.get_powergood_status():
|
|
try:
|
|
temp = self._read_generic_file(self.psu_temp, 0)
|
|
return float(temp) / 1000
|
|
except Exception as e:
|
|
logger.log_info("Fail to get temperature for PSU {} due to - {}".format(self._name, repr(e)))
|
|
|
|
return None
|
|
|
|
def get_temperature_high_threshold(self):
|
|
"""
|
|
Retrieves the high threshold temperature of PSU
|
|
|
|
Returns:
|
|
A float number, the high threshold temperature of PSU in Celsius
|
|
up to nearest thousandth of one degree Celsius, e.g. 30.125
|
|
"""
|
|
if self.psu_temp_threshold is not None and self.get_powergood_status():
|
|
try:
|
|
temp_threshold = self._read_generic_file(self.psu_temp_threshold, 0)
|
|
return float(temp_threshold) / 1000
|
|
except Exception as e:
|
|
logger.log_info("Fail to get temperature threshold for PSU {} due to - {}".format(self._name, repr(e)))
|
|
|
|
return None
|
|
|
|
def get_voltage_high_threshold(self):
|
|
"""
|
|
Retrieves the high threshold PSU voltage output
|
|
|
|
Returns:
|
|
A float number, the high threshold output voltage in volts,
|
|
e.g. 12.1
|
|
"""
|
|
# hw-management doesn't expose those sysfs for now
|
|
raise NotImplementedError
|
|
|
|
def get_voltage_low_threshold(self):
|
|
"""
|
|
Retrieves the low threshold PSU voltage output
|
|
|
|
Returns:
|
|
A float number, the low threshold output voltage in volts,
|
|
e.g. 12.1
|
|
"""
|
|
# hw-management doesn't expose those sysfs for now
|
|
raise NotImplementedError
|