280 lines
6.4 KiB
Python
280 lines
6.4 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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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 = 0
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PORT_END = 53
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QSFP_PORT_START = 48
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PORTS_IN_BLOCK = 54
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BASE_DIR_PATH = "/sys/class/gpio/gpio{0}/direction"
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BASE_VAL_PATH = "/sys/class/gpio/gpio{0}/value"
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_port_to_eeprom_mapping = {}
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port_to_i2c_mapping = {
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0: 18,
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1: 19,
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2: 20,
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3: 21,
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4: 22,
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5: 23,
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6: 24,
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7: 25,
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8: 26,
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9: 27,
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10: 28,
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11: 29,
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12: 30,
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13: 31,
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14: 32,
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15: 33,
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16: 34,
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17: 35,
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18: 36,
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19: 37,
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20: 38,
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21: 39,
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22: 40,
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23: 41,
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24: 42,
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25: 43,
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26: 44,
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27: 45,
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28: 46,
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29: 47,
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30: 48,
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31: 49,
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32: 50,
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33: 51,
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34: 52,
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35: 53,
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36: 54,
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37: 55,
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38: 56,
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39: 57,
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40: 58,
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41: 59,
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42: 60,
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43: 61,
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44: 62,
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45: 63,
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46: 64,
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47: 65,
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48: 66,
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49: 67,
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50: 68,
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51: 69,
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52: 70,
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53: 71
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}
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abs_to_gpio_mapping = {
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0: 192,
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1: 193,
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2: 194,
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3: 195,
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4: 196,
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5: 197,
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6: 198,
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7: 199,
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8: 200,
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9: 201,
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10: 202,
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11: 203,
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12: 204,
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13: 205,
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14: 206,
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15: 207,
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16: 176,
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17: 177,
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18: 178,
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19: 179,
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20: 180,
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21: 181,
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22: 182,
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23: 183,
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24: 184,
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25: 185,
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26: 186,
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27: 187,
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28: 188,
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29: 189,
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30: 190,
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31: 191,
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32: 160,
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33: 161,
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34: 162,
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35: 163,
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36: 164,
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37: 165,
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38: 166,
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39: 167,
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40: 168,
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41: 169,
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42: 170,
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43: 171,
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44: 172,
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45: 173,
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46: 174,
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47: 175,
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48: 240,
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49: 241,
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50: 242,
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51: 243,
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52: 244,
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53: 245
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}
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lpmode_to_gpio_mapping = {
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48: 224,
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49: 225,
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50: 226,
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51: 227,
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52: 228,
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53: 229
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}
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reset_to_gpio_mapping = {
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48: 208,
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49: 209,
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50: 210,
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51: 211,
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52: 212,
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53: 213
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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 qsfp_port_start(self):
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return self.QSFP_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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def __init__(self):
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# Override port_to_eeprom_mapping for class initialization
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eeprom_path = "/sys/class/i2c-adapter/i2c-{0}/{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_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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abs_device_file = self.BASE_VAL_PATH.format(
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self.abs_to_gpio_mapping[port_num])
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val_file = open(abs_device_file)
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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 = val_file.readline().rstrip()
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# content is a string, either "0" or "1"
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if content == "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.qsfp_port_start or port_num > self.port_end:
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return False
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try:
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lpmode_val_device_file = self.BASE_VAL_PATH.format(
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self.lpmode_to_gpio_mapping[port_num])
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val_file = open(lpmode_val_device_file)
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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 = val_file.readline().rstrip()
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# content is a string, either "0" or "1"
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if content == "1":
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return True
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return False
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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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lpmode_val_device_file = self.BASE_VAL_PATH.format(
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self.lpmode_to_gpio_mapping[port_num])
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val_file = open(lpmode_val_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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val_file.write("1" if lpmode is True else "0")
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val_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.qsfp_port_start or port_num > self.port_end:
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print "Error: unable to reset non-QSFP module: port %s" % str(port_num)
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return False
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try:
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print "port %s" % str(port_num)
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reset_val_device_file = self.BASE_VAL_PATH.format(
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self.reset_to_gpio_mapping[port_num])
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val_file = open(reset_val_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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val_file.write("1")
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val_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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try:
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reset_val_device_file = self.BASE_VAL_PATH.format(
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self.reset_to_gpio_mapping[port_num])
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val_file = open(reset_val_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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val_file.write("0")
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val_file.close()
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return True
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