Added support for Z9100 to check SFP Presence, toggling lpmode, reset… (#1087)
* Added support for Z9100 to check SFP Presence, toggling lpmode, reset, and eeprom details
This commit is contained in:
paavaanan
Joe LeVeque
parent
d7d6c41184
commit
bfa0346040
@ -1,60 +1,339 @@
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#!/usr/bin/env python
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# 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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from sonic_sfp.sfputilbase import sfputilbase
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except ImportError, e:
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raise ImportError (str(e) + "- required module not found")
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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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class SfpUtil(SfpUtilBase):
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"""Platform-specific SfpUtil class"""
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port_start = 0
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port_end = 31
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ports_in_block = 32
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PORT_START = 0
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PORT_END = 31
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PORTS_IN_BLOCK = 32
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IOM_1_PORT_START = 0
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IOM_1_PORT_END = 11
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IOM_2_PORT_START = 12
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IOM_2_PORT_END = 21
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IOM_3_PORT_START = 22
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IOM_3_PORT_END = 31
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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: 31,
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13: 30,
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14: 33,
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15: 32,
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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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}
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BASE_VAL_PATH = "/sys/class/i2c-adapter/i2c-{0}/{0}-003e/"
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_qsfp_ports = range(0, ports_in_block + 1)
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_port_to_eeprom_mapping = {}
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_port_to_i2c_mapping = {
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0: [9, 18],
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1: [9, 19],
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2: [9, 20],
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3: [9, 21],
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4: [9, 22],
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5: [9, 23],
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6: [9, 24],
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7: [9, 25],
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8: [8, 26],
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9: [8, 27],
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10: [8, 28],
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11: [8, 29],
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12: [8, 31], # reordered
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13: [8, 30],
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14: [8, 33], # reordered
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15: [8, 32],
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16: [7, 34],
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17: [7, 35],
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18: [7, 36],
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19: [7, 37],
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20: [7, 38],
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21: [7, 39],
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22: [7, 40],
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23: [7, 41],
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24: [6, 42],
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25: [6, 43],
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26: [6, 44],
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27: [6, 45],
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28: [6, 46],
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29: [6, 47],
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30: [6, 48],
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31: [6, 49]
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}
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def __init__(self, port_num):
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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(0, 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, port_num)
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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 iom1_port_start(self):
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return self.IOM_1_PORT_START
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@property
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def iom1_port_end(self):
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return self.IOM_1_PORT_END
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@property
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def iom2_port_start(self):
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return self.IOM_2_PORT_START
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@property
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def iom2_port_end(self):
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return self.IOM_2_PORT_END
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@property
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def iom3_port_start(self):
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return self.IOM_3_PORT_START
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@property
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def iom3_port_end(self):
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return self.IOM_3_PORT_END
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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 port_to_i2c_mapping(self):
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return self._port_to_i2c_mapping
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def __init__(self):
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eeprom_path = "/sys/class/i2c-adapter/i2c-{0}/i2c-{1}/{1}-0050/eeprom"
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for x in range(0, self.port_end+1):
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self.port_to_eeprom_mapping[x] = eeprom_path.format(
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self.port_to_i2c_mapping[x][0],
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self.port_to_i2c_mapping[x][1])
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SfpUtilBase.__init__(self)
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def get_presence(self, port_num):
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global i2c_line
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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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# port_num and i2c match
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if port_num >= self.iom1_port_start and port_num <= self.iom1_port_end:
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i2c_line = 14
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elif (port_num >= self.iom2_port_start and
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port_num <= self.iom2_port_end):
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i2c_line = 15
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elif (port_num >= self.iom3_port_start and
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port_num <= self.iom3_port_end):
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i2c_line = 16
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try:
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qsfp_path = self.BASE_VAL_PATH.format(i2c_line)+"qsfp_modprs"
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reg_file = open(qsfp_path, "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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# Absence of IOM throws read error
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if (content == 'read error'):
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return False
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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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# Rationalize port settings
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if port_num >= self.iom2_port_start and port_num <= self.iom2_port_end:
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port_num = port_num % 12
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elif (port_num >= self.iom3_port_start and
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port_num <= self.iom3_port_end):
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port_num = port_num % 22
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# Mask off the bit corresponding to our port
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mask = (1 << port_num)
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# ModPrsL is active low
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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.port_start or port_num > self.port_end:
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return False
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# port_num and i2c match
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if port_num >= self.iom1_port_start and port_num <= self.iom1_port_end:
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i2c_line = 14
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elif (port_num >= self.iom2_port_start and
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port_num <= self.iom2_port_end):
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i2c_line = 15
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elif (port_num >= self.iom3_port_start and
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port_num <= self.iom3_port_end):
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i2c_line = 16
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try:
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qsfp_path = self.BASE_VAL_PATH.format(i2c_line)+"qsfp_lpmode"
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reg_file = open(qsfp_path, "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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# Absence of IOM throws read error
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if (content == 'read error'):
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return False
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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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# Rationalize port settings
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if port_num >= self.iom2_port_start and port_num <= self.iom2_port_end:
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port_num = port_num % 12
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elif (port_num >= self.iom3_port_start and
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port_num <= self.iom3_port_end):
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port_num = port_num % 22
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# Mask off the bit corresponding to our port
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mask = (1 << port_num)
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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.port_start or port_num > self.port_end:
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return False
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# port_num and i2c match
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if port_num >= self.iom1_port_start and port_num <= self.iom1_port_end:
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i2c_line = 14
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elif (port_num >= self.iom2_port_start and
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port_num <= self.iom2_port_end):
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i2c_line = 15
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elif (port_num >= self.iom3_port_start and
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port_num <= self.iom3_port_end):
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i2c_line = 16
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try:
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qsfp_path = self.BASE_VAL_PATH.format(i2c_line)+"qsfp_lpmode"
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reg_file = open(qsfp_path, "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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# Absence of IOM throws read error
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if (content == 'read error'):
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return False
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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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# Rationalize port settings
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if port_num >= self.iom2_port_start and port_num <= self.iom2_port_end:
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port_num = port_num % 12
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elif (port_num >= self.iom3_port_start and
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port_num <= self.iom3_port_end):
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port_num = port_num % 22
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# Mask off the bit corresponding to our port
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mask = (1 << port_num)
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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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# 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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# port_num and i2c match
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if port_num >= self.iom1_port_start and port_num <= self.iom1_port_end:
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i2c_line = 14
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elif (port_num >= self.iom2_port_start and
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port_num <= self.iom2_port_end):
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i2c_line = 15
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elif (port_num >= self.iom3_port_start and
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port_num <= self.iom3_port_end):
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i2c_line = 16
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try:
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qsfp_path = self.BASE_VAL_PATH.format(i2c_line)+"qsfp_lpmode"
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reg_file = open(qsfp_path, "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 th
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reg_value = int(content, 16)
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# Rationalize port settings
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if port_num >= self.iom2_port_start and port_num <= self.iom2_port_end:
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port_num = port_num % 12
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elif (port_num >= self.iom3_port_start and
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port_num <= self.iom3_port_end):
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port_num = port_num % 22
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# Mask off the bit corresponding to our port
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mask = (1 << port_num)
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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
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# port out of reset
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try:
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qsfp_path = self.BASE_VAL_PATH.format(i2c_line)+"qsfp_lpmode"
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reg_file = open(qsfp_path, "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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