2017-06-20 22:52:16 -05:00
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try:
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2017-12-15 02:59:41 -06:00
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import time
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2019-05-15 09:49:02 -05:00
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import string
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from ctypes import create_string_buffer
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2020-11-25 12:28:36 -06:00
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from sonic_sfp.sfputilbase import SfpUtilBase
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except ImportError as e:
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raise ImportError(str(e) + "- required module not found")
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2017-06-20 22:52:16 -05:00
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2020-11-25 12:28:36 -06:00
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# from xcvrd
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2019-07-24 14:14:43 -05:00
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SFP_STATUS_INSERTED = '1'
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SFP_STATUS_REMOVED = '0'
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2017-06-20 22:52:16 -05:00
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2017-11-30 13:19:41 -06:00
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class SfpUtil(SfpUtilBase):
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"""Platform specific SfpUtill class"""
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2017-06-20 22:52:16 -05:00
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2019-07-24 14:14:43 -05:00
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_port_start = 1
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_port_end = 32
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2017-06-20 22:52:16 -05:00
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ports_in_block = 32
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2017-11-30 13:19:41 -06:00
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_port_to_eeprom_mapping = {}
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2017-06-20 22:52:16 -05:00
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port_to_i2c_mapping = {
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2020-11-25 12:28:36 -06:00
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9: 18,
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10: 19,
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11: 20,
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12: 21,
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1: 22,
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2: 23,
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3: 24,
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4: 25,
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6: 26,
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5: 27,
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8: 28,
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7: 29,
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13: 30,
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14: 31,
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15: 32,
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16: 33,
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17: 34,
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18: 35,
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19: 36,
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20: 37,
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25: 38,
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26: 39,
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27: 40,
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28: 41,
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29: 42,
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30: 43,
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31: 44,
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32: 45,
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21: 46,
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22: 47,
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23: 48,
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24: 49,
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2017-06-20 22:52:16 -05:00
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}
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2020-11-25 12:28:36 -06:00
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_qsfp_ports = list(range(0, ports_in_block + 1))
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2017-06-20 22:52:16 -05:00
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2017-11-30 13:19:41 -06:00
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def __init__(self):
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2018-02-13 07:37:12 -06:00
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eeprom_path = '/sys/bus/i2c/devices/{0}-0050/eeprom'
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2019-07-24 14:14:43 -05:00
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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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2017-11-30 13:19:41 -06:00
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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 reset(self, port_num):
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2017-12-15 02:59:41 -06:00
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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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2018-02-13 07:37:12 -06:00
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path = "/sys/bus/i2c/devices/4-0060/module_reset_{0}"
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2019-07-24 14:14:43 -05:00
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port_ps = path.format(port_num)
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2020-11-25 12:28:36 -06:00
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2017-12-15 02:59:41 -06:00
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try:
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2019-07-24 14:14:43 -05:00
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reg_file = open(port_ps, 'w', buffering=0)
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2017-12-15 02:59:41 -06:00
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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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2017-12-15 02:59:41 -06:00
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return False
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2020-11-25 12:28:36 -06:00
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# toggle reset
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2017-12-15 02:59:41 -06:00
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reg_file.seek(0)
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reg_file.write('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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2020-11-25 12:28:36 -06:00
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2017-11-30 13:19:41 -06:00
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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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2018-02-13 07:37:12 -06:00
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path = "/sys/bus/i2c/devices/4-0060/module_present_{0}"
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2019-07-24 14:14:43 -05:00
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port_ps = path.format(port_num)
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2017-11-30 13:19:41 -06:00
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2020-02-07 09:53:55 -06:00
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reg_value = '0'
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2017-11-30 13:19:41 -06:00
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try:
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reg_file = open(port_ps)
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2020-02-07 09:53:55 -06:00
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reg_value = reg_file.readline().rstrip()
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reg_file.close()
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2017-11-30 13:19:41 -06:00
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except IOError as e:
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2020-11-25 12:28:36 -06:00
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print("Error: unable to access file: %s" % str(e))
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2017-11-30 13:19:41 -06:00
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return False
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2020-11-25 12:28:36 -06:00
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2017-11-30 13:19:41 -06:00
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if reg_value == '1':
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return True
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return False
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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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2020-11-25 12:28:36 -06:00
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2017-11-30 13:19:41 -06:00
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@property
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def qsfp_ports(self):
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return list(range(self.port_start, self.ports_in_block + 1))
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2017-11-30 13:19:41 -06:00
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2020-11-25 12:28:36 -06:00
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@property
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2017-11-30 13:19:41 -06:00
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def port_to_eeprom_mapping(self):
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return self._port_to_eeprom_mapping
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2017-11-30 13:19:41 -06:00
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2019-05-15 09:49:02 -05:00
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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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eeprom = None
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if not self.get_presence(port_num):
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return False
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eeprom = open(self.port_to_eeprom_mapping[port_num], "rb")
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eeprom.seek(93)
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lpmode = ord(eeprom.read(1))
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if ((lpmode & 0x3) == 0x3):
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2020-11-25 12:28:36 -06:00
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return True # Low Power Mode if "Power override" bit is 1 and "Power set" bit is 1
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2019-05-15 09:49:02 -05:00
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else:
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# High Power Mode if one of the following conditions is matched:
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# 1. "Power override" bit is 0
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# 2. "Power override" bit is 1 and "Power set" bit is 0
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return False
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2019-05-15 09:49:02 -05:00
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except IOError as e:
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2020-11-25 12:28:36 -06:00
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print("Error: unable to open file: %s" % str(e))
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2019-05-15 09:49:02 -05:00
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return False
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finally:
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if eeprom is not None:
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eeprom.close()
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time.sleep(0.01)
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2020-11-25 12:28:36 -06:00
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def set_low_power_mode(self, port_num, lpmode):
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2019-05-15 09:49:02 -05:00
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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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eeprom = None
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if not self.get_presence(port_num):
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2020-11-25 12:28:36 -06:00
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return False # Port is not present, unable to set the eeprom
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2019-05-15 09:49:02 -05:00
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# Fill in write buffer
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2020-11-25 12:28:36 -06:00
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regval = 0x3 if lpmode else 0x1 # 0x3:Low Power Mode, 0x1:High Power Mode
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2019-05-15 09:49:02 -05:00
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buffer = create_string_buffer(1)
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buffer[0] = chr(regval)
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# Write to eeprom
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eeprom = open(self.port_to_eeprom_mapping[port_num], "r+b")
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eeprom.seek(93)
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eeprom.write(buffer[0])
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return True
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except IOError as e:
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2020-11-25 12:28:36 -06:00
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print("Error: unable to open file: %s" % str(e))
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2019-05-15 09:49:02 -05:00
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return False
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finally:
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if eeprom is not None:
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eeprom.close()
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2019-07-24 14:14:43 -05:00
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time.sleep(0.01)
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@property
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def _get_all_presence(self):
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nodes = []
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cpld_path = "/sys/bus/i2c/devices/4-0060/"
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nodes.append(cpld_path + "module_present_all")
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bitmap = ""
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for node in nodes:
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try:
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reg_file = open(node)
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except IOError as e:
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2020-11-25 12:28:36 -06:00
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print("Error: unable to open file: %s" % str(e))
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2019-07-24 14:14:43 -05:00
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return False
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bitmap += reg_file.readline().rstrip() + " "
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reg_file.close()
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rev = bitmap.split(" ")
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rev = "".join(rev[::-1])
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2020-11-25 12:28:36 -06:00
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return int(rev, 16)
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data = {'valid': 0, 'last': 0, 'present': 0}
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2019-07-24 14:14:43 -05:00
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def get_transceiver_change_event(self, timeout=2000):
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now = time.time()
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port_dict = {}
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port = 0
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if timeout < 1000:
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timeout = 1000
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2020-11-25 12:28:36 -06:00
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timeout = (timeout) / float(1000) # Convert to secs
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2019-07-24 14:14:43 -05:00
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if now < (self.data['last'] + timeout) and self.data['valid']:
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return True, {}
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reg_value = self._get_all_presence
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changed_ports = self.data['present'] ^ reg_value
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if changed_ports:
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2020-11-25 12:28:36 -06:00
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for port in range(self.port_start, self.port_end+1):
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2019-07-24 14:14:43 -05:00
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# Mask off the bit corresponding to our port
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mask = (1 << (port - 1))
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if changed_ports & mask:
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if (reg_value & mask) == 0:
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port_dict[port] = SFP_STATUS_INSERTED
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else:
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port_dict[port] = SFP_STATUS_REMOVED
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# Update cache
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self.data['present'] = reg_value
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self.data['last'] = now
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self.data['valid'] = 1
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return True, port_dict
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else:
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return True, {}
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return False, {}
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