167 lines
5.0 KiB
Python
Executable File
167 lines
5.0 KiB
Python
Executable File
#!/usr/bin/env python
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try:
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import time
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import json
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from sonic_sfp.sfputilbase import SfpUtilBase
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except ImportError as e:
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raise ImportError (str(e) + "- required module not found")
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attr_path = '/sys/class/hwmon/hwmon2/device/'
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PLATFORM_INSTALL_INFO_FILE="/etc/sonic/platform_install.json"
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PLATFORM_SFP_GROUPS = ['SFP-G01','SFP-G02','SFP-G03','SFP-G04']
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QSFP_RESET_FILE = 'ESCC601_QSFP/qsfp{}_reset'
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QSFP_LOWPOWER_FILE = 'ESCC601_QSFP/qsfp{}_low_power'
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QSFP_PRESENT_FILE = 'ESCC601_QSFP/qsfp{}_present'
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class SfpUtil(SfpUtilBase):
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"""Platform specific SfpUtill class"""
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_port_start = 0
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_port_end = 31
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_port_in_block =32
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_port_to_eeprom_mapping = {}
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_global_port_pres_dict = {}
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def __init__(self):
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eeprom_path = "{}/eeprom"
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path_list = self.get_sfp_path()
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for x in range(self._port_start, self._port_end + 1):
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port_eeprom_path = eeprom_path.format(path_list[x])
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self._port_to_eeprom_mapping[x] = port_eeprom_path
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self.init_global_port_presence()
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SfpUtilBase.__init__(self)
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def get_sfp_path(self):
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map = []
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with open(PLATFORM_INSTALL_INFO_FILE) as fd:
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install_info = json.load(fd)
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for sfp_group_name in PLATFORM_SFP_GROUPS:
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sfp_group = install_info[2][sfp_group_name]
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map = map + sfp_group['paths']
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return map
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def reset(self, port_num):
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# Check for invalid port_num
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if port_num < self._port_start or port_num > self._port_end:
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return False
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path = attr_path+QSFP_RESET_FILE.format(port_num+1)
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try:
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reg_file = open(path, 'w')
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except IOError as e:
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print( "Error: unable to open file: %s" % str(e))
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return False
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reg_file.seek(0)
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reg_file.write('1')
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reg_file.close()
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return True
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def set_low_power_mode(self, port_num, lpmode):
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# Check for invalid port_num
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if port_num < self.port_start or port_num > self.port_end:
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return False
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path = attr_path+QSFP_LOWPOWER_FILE.format(port_num+1)
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try:
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reg_file = open(path, 'w')
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except IOError as e:
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print( "Error: unable to open file: %s" % str(e))
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return False
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# the gpio pin is ACTIVE_HIGH
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if lpmode is True:
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val = "1"
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else:
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val = "0"
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# write value to gpio
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reg_file.seek(0)
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reg_file.write(val)
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reg_file.close()
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return True
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def get_low_power_mode(self, port_num):
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# Check for invalid port_num
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if port_num < self._port_start or port_num > self._port_end:
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return False
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path = attr_path+QSFP_LOWPOWER_FILE.format(port_num+1)
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try:
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reg_file = open(path, 'r')
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except IOError as e:
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print( "Error: unable to open file: %s" % str(e))
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return False
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text = reg_file.read()
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reg_file.close()
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if int(text) == 1:
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return True
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return False
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def get_presence(self, port_num):
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# Check for invalid port_num
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if port_num < self._port_start or port_num > self._port_end:
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return False
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path = attr_path+QSFP_PRESENT_FILE.format(port_num+1)
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try:
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reg_file = open(path, 'r')
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except IOError as e:
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print( "Error: unable to open file: %s" % str(e))
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return False
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text = reg_file.read()
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reg_file.close()
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if int(text) == 1:
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return True
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return False
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def init_global_port_presence(self):
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for port_num in range(self.port_start, (self.port_end + 1)):
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presence = self.get_presence(port_num)
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if(presence):
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self._global_port_pres_dict[port_num] = '1'
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else:
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self._global_port_pres_dict[port_num] = '0'
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def get_transceiver_change_event(self, timeout=0):
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port_dict = {}
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while True:
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for port_num in range(self.port_start, (self.port_end + 1)):
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presence = self.get_presence(port_num)
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if(presence and self._global_port_pres_dict[port_num] == '0'):
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self._global_port_pres_dict[port_num] = '1'
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port_dict[port_num] = '1'
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elif(not presence and
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self._global_port_pres_dict[port_num] == '1'):
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self._global_port_pres_dict[port_num] = '0'
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port_dict[port_num] = '0'
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if(len(port_dict) > 0):
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return True, port_dict
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time.sleep(1)
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@property
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def port_start(self):
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return self._port_start
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@property
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def port_end(self):
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return self._port_end
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@property
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def qsfp_ports(self):
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return range(0, self._port_in_block + 1)
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@property
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def port_to_eeprom_mapping(self):
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return self._port_to_eeprom_mapping
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