257 lines
7.0 KiB
Python
257 lines
7.0 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 subprocess
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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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i2c_set = 'i2cset'
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i2c_get = 'i2cget'
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cpld_addr = '0x33'
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mux_reg = '0x4A'
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class SfpUtil(SfpUtilBase):
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"""Platform-specific SfpUtil class"""
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PORT_START = 0
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PORT_END = 63
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QSFP_PORT_START = 48
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PORTS_IN_BLOCK = 64
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_port_to_eeprom_mapping = {}
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port_to_i2c_mapping = {
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0: [2,1],
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1: [2,2],
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2: [2,3],
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3: [2,4],
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4: [2,5],
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5: [2,6],
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6: [2,7],
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7: [2,8],
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8: [2,9],
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9: [2,10],
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10: [2,11],
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11: [2,12],
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12: [2,13],
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13: [2,14],
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14: [2,15],
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15: [2,16],
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16: [2,17],
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17: [2,18],
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18: [2,19],
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19: [2,20],
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20: [2,21],
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21: [2,22],
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22: [2,23],
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23: [2,24],
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24: [3,25],
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25: [3,26],
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26: [3,27],
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27: [3,28],
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28: [3,29],
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29: [3,30],
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30: [3,31],
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31: [3,32],
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32: [3,33],
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33: [3,34],
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34: [3,35],
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35: [3,36],
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36: [3,37],
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37: [3,38],
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38: [3,39],
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39: [3,40],
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40: [3,41],
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41: [3,42],
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42: [3,43],
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43: [3,44],
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44: [3,45],
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45: [3,46],
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46: [3,47],
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47: [3,48],
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48: [4,49],
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49: [4,50],
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50: [4,51],
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51: [4,52],
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52: [4,53],
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53: [4,54],
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54: [4,55],
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55: [4,56],
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56: [4,57],
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57: [4,58],
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58: [4,59],
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59: [4,60],
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60: [4,61],
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61: [4,62],
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62: [4,63],
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63: [4,64]
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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.QSFP_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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@property
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def qsfp_port_start(self):
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return self.QSFP_PORT_START
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def __init__(self):
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sfp_eeprom_path = '/sys/bus/i2c/devices/{0[0]}-0050/sfp{0[1]}'
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qsfp_eeprom_path = '/sys/bus/i2c/devices/{0[0]}-0050/qsfp{0[1]}'
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for x in range(self.port_start, self.qsfp_port_start):
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port_eeprom_path = sfp_eeprom_path.format(self.port_to_i2c_mapping[x])
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self.port_to_eeprom_mapping[x] = port_eeprom_path
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for x in range(self.qsfp_port_start, self.port_end + 1):
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port_eeprom_path = qsfp_eeprom_path.format(self.port_to_i2c_mapping[x])
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self.port_to_eeprom_mapping[x] = port_eeprom_path
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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/devices/platform/ingrasys-s8900-64xc-cpld.0/qsfp_modprs")
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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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content = reg_file.readline().rstrip()
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# content is a string containing the hex representation of the register
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reg_value = int(content, 16)
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# Mask off the bit corresponding to our port
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mask = (1 << port_num)
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# content is a string, either "0" or "1"
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if reg_value & mask == 0:
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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.qsfp_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/devices/platform/ingrasys-s8900-64xc-cpld.0/qsfp_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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content = reg_file.readline().rstrip()
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# content is a string containing the hex representation of the register
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reg_value = int(content, 16)
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# Mask off the bit corresponding to our port
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mask = (1 << (port_num - self.qsfp_port_start) )
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# LPMode is active high
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if reg_value & mask == 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.qsfp_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/devices/platform/ingrasys-s8900-64xc-cpld.0/qsfp_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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content = reg_file.readline().rstrip()
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# content is a string containing the hex representation of the register
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reg_value = int(content, 16)
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# Mask off the bit corresponding to our port
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mask = (1 << (port_num - self.qsfp_port_start) )
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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 = reg_value | mask
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else:
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reg_value = reg_value & ~mask
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# Convert our register value back to a hex string and write back
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content = hex(reg_value)
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reg_file.seek(0)
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reg_file.write(content)
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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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QSFP_RESET_REGISTER_DEVICE_FILE = "/sys/devices/platform/ingrasys-s8900-64xc-cpld.0/qsfp_reset"
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# Check for invalid port_num
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if port_num < self.qsfp_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(QSFP_RESET_REGISTER_DEVICE_FILE, "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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content = reg_file.readline().rstrip()
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# File content is a string containing the hex representation of the register
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reg_value = int(content, 16)
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# Mask off the bit corresponding to our port
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mask = (1 << (port_num - self.qsfp_port_start))
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# ResetL is active low
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reg_value = reg_value & ~mask
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# Convert our register value back to a hex string and write back
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reg_file.seek(0)
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reg_file.write(hex(reg_value))
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reg_file.close()
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# Sleep 1 second to allow it to settle
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time.sleep(1)
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# Flip the bit back high and write back to the register to take port out of reset
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try:
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reg_file = open(QSFP_RESET_REGISTER_DEVICE_FILE, "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_value = reg_value | mask
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reg_file.seek(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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