291 lines
6.4 KiB
Python
291 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 = 33
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SFP_PORT_START = 32
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PORTS_IN_BLOCK = 34
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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: 10,
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1: 9,
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2: 12,
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3: 11,
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4: 14,
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5: 13,
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6: 16,
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7: 15,
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8: 18,
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9: 17,
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10: 20,
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11: 19,
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12: 22,
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13: 21,
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14: 24,
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15: 23,
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16: 26,
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17: 25,
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18: 28,
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19: 27,
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20: 30,
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21: 29,
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22: 32,
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23: 31,
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24: 34,
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25: 33,
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26: 36,
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27: 35,
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28: 38,
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29: 37,
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30: 40,
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31: 39,
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32: 45,
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33: 46
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}
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abs_to_gpio_mapping = {
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0: 241,
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1: 240,
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2: 243,
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3: 242,
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4: 245,
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5: 244,
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6: 247,
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7: 246,
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8: 249,
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9: 248,
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10: 251,
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11: 250,
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12: 253,
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13: 252,
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14: 255,
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15: 254,
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16: 225,
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17: 224,
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18: 227,
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19: 226,
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20: 229,
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21: 228,
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22: 231,
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23: 230,
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24: 233,
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25: 232,
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26: 235,
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27: 234,
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28: 237,
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29: 236,
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30: 239,
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31: 238,
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32: 177,
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33: 176
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}
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lpmode_to_gpio_mapping = {
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0: 161,
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1: 160,
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2: 163,
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3: 162,
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4: 165,
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5: 164,
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6: 167,
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7: 166,
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8: 169,
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9: 168,
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10: 171,
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11: 170,
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12: 173,
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13: 172,
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14: 175,
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15: 174,
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16: 145,
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17: 144,
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18: 147,
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19: 146,
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20: 149,
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21: 148,
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22: 151,
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23: 150,
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24: 153,
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25: 152,
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26: 155,
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27: 154,
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28: 157,
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29: 156,
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30: 159,
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31: 158
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}
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reset_to_gpio_mapping = {
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0: 129,
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1: 128,
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2: 131,
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3: 130,
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4: 133,
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5: 132,
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6: 135,
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7: 134,
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8: 137,
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9: 136,
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10: 139,
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11: 138,
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12: 141,
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13: 140,
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14: 143,
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15: 142,
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16: 113,
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17: 112,
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18: 115,
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19: 114,
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20: 117,
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21: 116,
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22: 119,
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23: 118,
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24: 121,
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25: 120,
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26: 123,
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27: 122,
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28: 125,
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29: 124,
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30: 127,
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31: 126
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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(0, 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 sfp_port_start(self):
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return self.SFP_PORT_START
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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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val_file.close()
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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.port_start or port_num > self.sfp_port_start: # TBD
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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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val_file.close()
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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.port_start or port_num > self.sfp_port_start: # TBD
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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.port_start or port_num > self.sfp_port_start: # TBD
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return False
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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("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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