177 lines
4.5 KiB
Python
177 lines
4.5 KiB
Python
# sfputil.py
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#
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# Platform-specific SFP transceiver interface for SONiC
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#
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try:
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import time
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import string
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from ctypes import create_string_buffer
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from sonic_sfp.sfputilbase import SfpUtilBase
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except ImportError as e:
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raise ImportError("%s - required module not found" % str(e))
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class SfpUtil(SfpUtilBase):
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"""Platform-specific SfpUtil class"""
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PORT_START = 1
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PORT_END = 32
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PORTS_IN_BLOCK = 32
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_port_to_eeprom_mapping = {}
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_port_to_i2c_mapping = {
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1 : 32,
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2 : 33,
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3 : 34,
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4 : 35,
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5 : 36,
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6 : 37,
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7 : 38,
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8 : 39,
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9 : 40,
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10 : 41,
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11 : 42,
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12 : 43,
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13 : 44,
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14 : 45,
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15 : 46,
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16 : 47,
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17 : 48,
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18 : 49,
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19 : 50,
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20 : 51,
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21 : 52,
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22 : 53,
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23 : 54,
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24 : 55,
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25 : 56,
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26 : 57,
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27 : 58,
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28 : 59,
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29 : 60,
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30 : 61,
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31 : 62,
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32 : 63,
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}
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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(self.PORT_START, self.PORTS_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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def __init__(self):
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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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self.port_to_eeprom_mapping[x] = eeprom_path.format(self._port_to_i2c_mapping[x])
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SfpUtilBase.__init__(self)
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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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try:
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reg_file = open("/sys/class/cpld-qsfp28/port-"+str(port_num)+"/module_present")
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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_value = reg_file.readline().rstrip()
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if reg_value == '1':
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return True
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return False
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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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try:
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reg_file = open("/sys/class/cpld-qsfp28/port-"+str(port_num)+"/lpmode")
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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_value = int(reg_file.readline().rstrip())
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if reg_value == 0:
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return False
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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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try:
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reg_file = open("/sys/class/cpld-qsfp28/port-"+str(port_num)+"/lpmode", "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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reg_value = int(reg_file.readline().rstrip())
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# LPMode is active high; set or clear the bit accordingly
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if lpmode is True:
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reg_value = 1
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else:
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reg_value = 0
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reg_file.write(hex(reg_value))
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reg_file.close()
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return True
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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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try:
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reg_file = open("/sys/class/cpld-qsfp28/port-"+str(port_num)+"/reset", "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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reg_value = 0
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reg_file.write(hex(reg_value))
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reg_file.close()
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# Sleep 2 second to allow it to settle
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time.sleep(2)
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# Flip the value back write back to the register to take port out of reset
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try:
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reg_file = open("/sys/class/cpld-qsfp28/port-"+str(port_num)+"/reset", "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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reg_value = 1
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reg_file.write(hex(reg_value))
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reg_file.close()
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return True
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def get_transceiver_change_event(self):
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"""
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TODO: This function need to be implemented
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when decide to support monitoring SFP(Xcvrd)
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on this platform.
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"""
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raise NotImplementedError
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