192 lines
6.4 KiB
Python
192 lines
6.4 KiB
Python
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#
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# psuutil.py
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# Platform-specific PSU status interface for SONiC
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#
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import commands
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import os
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import sys
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SENSORS_CMD = "docker exec -i pmon /usr/bin/sensors"
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DOCKER_SENSORS_CMD = "/usr/bin/sensors"
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try:
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from sonic_psu.psu_base import PsuBase
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except ImportError as e:
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raise ImportError(str(e) + "- required module not found")
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class PsuUtil(PsuBase):
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"""Platform-specific PSUutil class"""
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_psu_mapping = {
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1 : '0',
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2 : '1'
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}
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def __init__(self):
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PsuBase.__init__(self)
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def isDockerEnv(self):
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num_docker = open('/proc/self/cgroup', 'r').read().count(":/docker")
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if num_docker > 0:
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return True
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else:
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return False
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def remove_nonnumeric(self, text):
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digits='0123456789.'
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return ''.join(c for c in text if c in digits)
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def get_cpld_register(self, reg_name):
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cpld_dir = "/sys/devices/platform/dell-n3248te-cpld.0/"
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retval = 'ERR'
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reg_file = cpld_dir +'/' + reg_name
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if (not os.path.isfile(reg_file)):
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return retval
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try:
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with open(reg_file, 'r') as fd:
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retval = fd.read()
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except Exception as error:
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print("Unable to open ", reg_file, "file !")
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retval = retval.rstrip('\r\n')
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return retval
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def get_num_psus(self):
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"""
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Retrieves the number of PSUs available on the device
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:return: An integer, the number of PSUs available on the device
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"""
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N3248TE_MAX_PSUS = 2
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return N3248TE_MAX_PSUS
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def get_psu_status(self, index):
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"""
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Retrieves the oprational status of power supply unit (PSU) defined
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by index <index>
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:param index: An integer, index of the PSU of which to query status
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:return: Boolean, True if PSU is operating properly, False if PSU is\
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faulty
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"""
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status = 0
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psu_status = self.get_cpld_register('psu'+self._psu_mapping[index]+'_status')
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if (psu_status != 'ERR'):
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status = int(psu_status, 10)
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presence = self.get_psu_presence(index)
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return (status & presence)
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def get_psu_presence(self, index):
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"""
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Retrieves the presence status of power supply unit (PSU) defined
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by index <index>
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:param index: An integer, index of the PSU of which to query status
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:return: Boolean, True if PSU is plugged, False if not
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"""
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status = 0
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psu_presence = self.get_cpld_register('psu'+self._psu_mapping[index]+'_prs')
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if (psu_presence != 'ERR'):
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status = int(psu_presence, 10)
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return status
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def get_sensor(self):
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dockerenv = self.isDockerEnv()
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if not dockerenv:
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status, cmd_output = commands.getstatusoutput(SENSORS_CMD)
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else :
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status, cmd_output = commands.getstatusoutput(DOCKER_SENSORS_CMD)
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if status:
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print('Failed to execute sensors command')
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sys.exit(0)
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return cmd_output
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def get_output_current(self, index):
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cmd_output= self.get_sensor()
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sensor_name = 'dps460-i2c-10' if index == 1 else 'dps460-i2c-11'
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found = False
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for line in cmd_output.splitlines():
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if line.startswith(sensor_name):
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found = True
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if found:
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if 'Output Current' in line :
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return float(self.remove_nonnumeric(line.split()[2]))
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return 0.0
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def get_output_voltage(self, index):
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cmd_output= self.get_sensor()
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sensor_name = 'dps460-i2c-10' if index == 1 else 'dps460-i2c-11'
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found = False
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for line in cmd_output.splitlines():
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if line.startswith(sensor_name):
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found = True
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if found:
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if 'Output Voltage' in line :
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return float(self.remove_nonnumeric(line.split()[2]))
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return 0.0
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def get_fan_rpm(self, index, fan_index):
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if fan_index > 1 : return 0.0
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cmd_output= self.get_sensor()
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sensor_name = 'dps460-i2c-10' if index == 1 else 'dps460-i2c-11'
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found = False
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for line in cmd_output.splitlines():
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if line.startswith(sensor_name):
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found = True
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if found:
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if 'Fan RPM' in line :
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return self.remove_nonnumeric(line.split()[2])
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return 0.0
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def get_output_power(self, index):
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cmd_output= self.get_sensor()
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sensor_name = 'dps460-i2c-10' if index == 1 else 'dps460-i2c-11'
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found = False
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for line in cmd_output.splitlines():
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if line.startswith(sensor_name):
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found = True
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if found:
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if 'Output Power' in line :
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return float(self.remove_nonnumeric(line.split()[2]))
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return 0.0
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def get_direction(self, index):
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psuid = '0' if index == 1 else '1'
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sysfs_path = '/sys/devices/platform/dell-n3248te-cpld.0/psu' + psuid + '_prs'
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found_psu = int(open(sysfs_path).read())
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if not found_psu : return ''
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bus_no = '10' if index == 1 else '11'
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sysfs_path = "/sys/bus/i2c/devices/" + bus_no + "-0056/eeprom"
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val = (open(sysfs_path, "rb").read())[0xe1:0xe8]
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dir = 'F2B' if 'FORWARD' == val else 'B2F'
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return dir
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def get_serial(self, index):
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psuid = '0' if index == 1 else '1'
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sysfs_path = '/sys/devices/platform/dell-n3248te-cpld.0/psu' + psuid + '_prs'
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found_psu = int(open(sysfs_path).read())
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if not found_psu : return ''
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bus_no = '10' if index == 1 else '11'
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sysfs_path = "/sys/bus/i2c/devices/" + bus_no + "-0056/eeprom"
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val = (open(sysfs_path, "rb").read())[0xc4:0xd9]
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return val
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def get_model(self, index):
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psuid = '0' if index == 1 else '1'
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sysfs_path = '/sys/devices/platform/dell-n3248te-cpld.0/psu' + psuid + '_prs'
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found_psu = int(open(sysfs_path).read())
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if not found_psu : return ''
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bus_no = '10' if index == 1 else '11'
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sysfs_path = "/sys/bus/i2c/devices/" + bus_no + "-0056/eeprom"
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val = (open(sysfs_path, "rb").read())[0x50:0x62]
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return val
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def get_mfr_id(self, index):
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psuid = '0' if index == 1 else '1'
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sysfs_path = '/sys/devices/platform/dell-n3248te-cpld.0/psu' + psuid + '_prs'
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found_psu = int(open(sysfs_path).read())
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return 'DELTA' if found_psu else ''
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