233 lines
7.0 KiB
Python
Executable File
233 lines
7.0 KiB
Python
Executable File
#!/usr/bin/env python
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try:
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import os
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import time
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from sonic_sfp.sfputilbase import SfpUtilBase
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except ImportError, 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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qsfp_sysfile_path = '/sys/bus/i2c/devices/{}-0032/'
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i2c_bus_base = 0
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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 = 127
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_port_in_block = 128
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_port_to_eeprom_mapping = {}
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_global_port_pres_dict = {}
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_port_position_mapping = []
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def __init__(self):
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self.create_port_position_mapping()
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eeprom_path = "/sys/bus/i2c/devices/{0}-0050/eeprom"
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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(self._port_position_mapping[x][2])
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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_attr_value(self,attr_path):
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retval = 'ERR'
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try:
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with open(attr_path, '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 ", attr_path, " file !")
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return retval
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retval = retval.rstrip('\r\n')
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fd.close()
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return retval
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def bmc_is_exist(self):
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value = ''
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bmc_filePath = '/sys/class/hwmon/hwmon2/device/ESC600_SYS/bmc_present'
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if os.path.exists(bmc_filePath):
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value = self.get_attr_value(bmc_filePath)
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if value.find('not') < 0:
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return True
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else:
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return False
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else:
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return False
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def get_inserted_slots(self):
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""" return list of inserted slots """
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path = attr_path+'ESC600_Module/module_insert'
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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_lines = reg_file.readlines()
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reg_file.close()
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slots = []
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for line in text_lines:
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if "is present" in line:
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slots.append(int(filter(str.isdigit, line)))
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return slots
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def create_port_position_mapping(self):
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inserted_slots = []
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ports_in_slots = [0]*8
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# record inserted slots
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inserted_slots = self.get_inserted_slots()
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# record the numbers of port on each slot
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for slot in inserted_slots:
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path = qsfp_sysfile_path.format(slot+i2c_bus_base) + 'portnum'
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ports_in_slots[slot-1] = int(self.get_attr_value(path))
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# mapping
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nport = 0
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if self.bmc_is_exist():
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PATH_71_BUS_BASE = 9
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else:
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PATH_71_BUS_BASE = 33
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sfp_bus = PATH_71_BUS_BASE
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for i in range(0,8):
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for x in range(0,ports_in_slots[i]):
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self._port_position_mapping.append((i, x+1, sfp_bus+x))
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nport = nport + 1
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if ports_in_slots[i] == 4:
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sfp_bus = sfp_bus + 8
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elif ports_in_slots[i] == 16:
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sfp_bus = sfp_bus + 16
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self._port_end = nport-1
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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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pos = self._port_position_mapping[port_num]
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path = qsfp_sysfile_path.format(pos[0]+i2c_bus_base+1)+'QSFP_reset_{}'.format(pos[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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#toggle reset
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#reg_file.seek(0)
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reg_file.write(str(port_num+1))
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#time.sleep(1)
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#reg_file.seek(0)
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#reg_file.write('0')
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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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pos = self._port_position_mapping[port_num]
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path = qsfp_sysfile_path.format(pos[0]+i2c_bus_base+1)+'QSFP_low_power_{}'.format(pos[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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pos = self._port_position_mapping[port_num]
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path = qsfp_sysfile_path.format(pos[0]+i2c_bus_base+1)+'QSFP_low_power_{}'.format(pos[1])
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res = self.get_attr_value(path)
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if res == 'ERR':
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return False
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if int(res) == 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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pos = self._port_position_mapping[port_num]
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path = qsfp_sysfile_path.format(pos[0]+i2c_bus_base+1)+'QSFP_present_{}'.format(pos[1])
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res = self.get_attr_value(path)
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if res == 'ERR':
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return False
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if int(res) == 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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