79 lines
2.4 KiB
Python
79 lines
2.4 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 os
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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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def __init__(self):
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PsuBase.__init__(self)
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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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return 2
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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 1-based index <index>
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:param index: An integer, 1-based 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 faulty
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"""
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if index is None:
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return False
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if index == 1:
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status_path = "/sys/devices/pci0000:00/0000:00:12.0/i2c-0/i2c-4/4-0058/psu_power_good"
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elif index == 2:
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status_path = "/sys/devices/pci0000:00/0000:00:12.0/i2c-0/i2c-4/4-0059/psu_power_good"
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else:
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return False
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try:
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with open(status_path, 'r') as fd:
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status = fd.read().rstrip('\r\n')
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if status == '0':
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return True
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else:
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return False
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except IOError:
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return False
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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 1-based index <index>
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:param index: An integer, 1-based 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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if index is None:
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return False
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if index == 1:
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status_path = "/sys/devices/pci0000:00/0000:00:12.0/i2c-0/i2c-4/4-0058/psu_present"
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elif index == 2:
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status_path = "/sys/devices/pci0000:00/0000:00:12.0/i2c-0/i2c-4/4-0059/psu_present"
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else:
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return False
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try:
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with open(status_path, 'r') as fd:
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status = fd.read().rstrip('\r\n')
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if status == '1':
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return True
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else:
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return False
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except IOError:
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return False
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