Added support for Z9100 to check SFP Presence, toggling lpmode, reset…

device/dell/x86_64-dell_z9100_c2538-r0/plugins/sfputil.py

@@ -1,60 +1,339 @@
-#!/usr/bin/env python
+# sfputil.py
+#
+# Platform-specific SFP transceiver interface for SONiC
+#
 
 try:
- from sonic_sfp.sfputilbase import sfputilbase
-except ImportError, e:
- raise ImportError (str(e) + "- required module not found")
-
-
-class sfputil(sfputilbase):
- """Platform specific sfputil class"""
-
- port_start = 0
- port_end = 31
- ports_in_block = 32
-
- port_to_eeprom_mapping = {}
- port_to_i2c_mapping = {
- 0: 18,
- 1: 19,
- 2: 20,
- 3: 21,
- 4: 22,
- 5: 23,
- 6: 24,
- 7: 25,
- 8: 26,
- 9: 27,
- 10: 28,
- 11: 29,
- 12: 31,
- 13: 30,
- 14: 33,
- 15: 32,
- 16: 34,
- 17: 35,
- 18: 36,
- 19: 37,
- 20: 38,
- 21: 39,
- 22: 40,
- 23: 41,
- 24: 42,
- 25: 43,
- 26: 44,
- 27: 45,
- 28: 46,
- 29: 47,
- 30: 48,
- 31: 49
- }
-
- _qsfp_ports = range(0, ports_in_block + 1)
-
- def __init__(self, port_num):
- # Override port_to_eeprom_mapping for class initialization
- eeprom_path = '/sys/class/i2c-adapter/i2c-{0}/{0}-0050/eeprom'
- for x in range(0, self.port_end + 1):
- port_eeprom_path = eeprom_path.format(self.port_to_i2c_mapping[x])
- self.port_to_eeprom_mapping[x] = port_eeprom_path
- sfputilbase.__init__(self, port_num)
+ import time
+ from sonic_sfp.sfputilbase import SfpUtilBase
+except ImportError as e:
+ raise ImportError("%s - required module not found" % str(e))
+
+
+class SfpUtil(SfpUtilBase):
+ """Platform-specific SfpUtil class"""
+
+ PORT_START = 0
+ PORT_END = 31
+ PORTS_IN_BLOCK = 32
+ IOM_1_PORT_START = 0
+ IOM_1_PORT_END = 11
+ IOM_2_PORT_START = 12
+ IOM_2_PORT_END = 21
+ IOM_3_PORT_START = 22
+ IOM_3_PORT_END = 31
+
+ BASE_VAL_PATH = "/sys/class/i2c-adapter/i2c-{0}/{0}-003e/"
+
+ _port_to_eeprom_mapping = {}
+ _port_to_i2c_mapping = {
+ 0: [9, 18],
+ 1: [9, 19],
+ 2: [9, 20],
+ 3: [9, 21],
+ 4: [9, 22],
+ 5: [9, 23],
+ 6: [9, 24],
+ 7: [9, 25],
+ 8: [8, 26],
+ 9: [8, 27],
+ 10: [8, 28],
+ 11: [8, 29],
+ 12: [8, 31], # reordered
+ 13: [8, 30],
+ 14: [8, 33], # reordered
+ 15: [8, 32],
+ 16: [7, 34],
+ 17: [7, 35],
+ 18: [7, 36],
+ 19: [7, 37],
+ 20: [7, 38],
+ 21: [7, 39],
+ 22: [7, 40],
+ 23: [7, 41],
+ 24: [6, 42],
+ 25: [6, 43],
+ 26: [6, 44],
+ 27: [6, 45],
+ 28: [6, 46],
+ 29: [6, 47],
+ 30: [6, 48],
+ 31: [6, 49]
+ }
+
+ @property
+ def port_start(self):
+ return self.PORT_START
+
+ @property
+ def port_end(self):
+ return self.PORT_END
+
+ @property
+ def qsfp_ports(self):
+ return range(0, self.PORTS_IN_BLOCK + 1)
+
+ @property
+ def iom1_port_start(self):
+ return self.IOM_1_PORT_START
+
+ @property
+ def iom1_port_end(self):
+ return self.IOM_1_PORT_END
+
+ @property
+ def iom2_port_start(self):
+ return self.IOM_2_PORT_START
+
+ @property
+ def iom2_port_end(self):
+ return self.IOM_2_PORT_END
+
+ @property
+ def iom3_port_start(self):
+ return self.IOM_3_PORT_START
+
+ @property
+ def iom3_port_end(self):
+ return self.IOM_3_PORT_END
+
+ @property
+ def port_to_eeprom_mapping(self):
+ return self._port_to_eeprom_mapping
+
+ @property
+ def port_to_i2c_mapping(self):
+ return self._port_to_i2c_mapping
+
+ def __init__(self):
+ eeprom_path = "/sys/class/i2c-adapter/i2c-{0}/i2c-{1}/{1}-0050/eeprom"
+
+ for x in range(0, self.port_end+1):
+ self.port_to_eeprom_mapping[x] = eeprom_path.format(
+ self.port_to_i2c_mapping[x][0],
+ self.port_to_i2c_mapping[x][1])
+
+ SfpUtilBase.__init__(self)
+
+ def get_presence(self, port_num):
+
+ global i2c_line
+
+ # Check for invalid port_num
+ if port_num < self.port_start or port_num > self.port_end:
+ return False
+ # port_num and i2c match
+ if port_num >= self.iom1_port_start and port_num <= self.iom1_port_end:
+ i2c_line = 14
+ elif (port_num >= self.iom2_port_start and
+ port_num <= self.iom2_port_end):
+ i2c_line = 15
+ elif (port_num >= self.iom3_port_start and
+ port_num <= self.iom3_port_end):
+ i2c_line = 16
+
+ try:
+ qsfp_path = self.BASE_VAL_PATH.format(i2c_line)+"qsfp_modprs"
+ reg_file = open(qsfp_path, "r")
+
+ except IOError as e:
+ print "Error: unable to open file: %s" % str(e)
+ return False
+
+ content = reg_file.readline().rstrip()
+
+ # Absence of IOM throws read error
+ if (content == 'read error'):
+ return False
+
+ # content is a string containing the hex representation of the register
+ reg_value = int(content, 16)
+
+ # Rationalize port settings
+ if port_num >= self.iom2_port_start and port_num <= self.iom2_port_end:
+ port_num = port_num % 12
+ elif (port_num >= self.iom3_port_start and
+ port_num <= self.iom3_port_end):
+ port_num = port_num % 22
+
+ # Mask off the bit corresponding to our port
+ mask = (1 << port_num)
+
+ # ModPrsL is active low
+ if reg_value & mask == 0:
+ return True
+
+ return False
+
+ def get_low_power_mode(self, port_num):
+
+ # Check for invalid port_num
+ if port_num < self.port_start or port_num > self.port_end:
+ return False
+
+ # port_num and i2c match
+ if port_num >= self.iom1_port_start and port_num <= self.iom1_port_end:
+ i2c_line = 14
+ elif (port_num >= self.iom2_port_start and
+ port_num <= self.iom2_port_end):
+ i2c_line = 15
+ elif (port_num >= self.iom3_port_start and
+ port_num <= self.iom3_port_end):
+ i2c_line = 16
+
+ try:
+ qsfp_path = self.BASE_VAL_PATH.format(i2c_line)+"qsfp_lpmode"
+ reg_file = open(qsfp_path, "r")
+
+ except IOError as e:
+ print "Error: unable to open file: %s" % str(e)
+ return False
+
+ content = reg_file.readline().rstrip()
+
+ # Absence of IOM throws read error
+ if (content == 'read error'):
+ return False
+
+ # content is a string containing the hex representation of the register
+ reg_value = int(content, 16)
+
+ # Rationalize port settings
+ if port_num >= self.iom2_port_start and port_num <= self.iom2_port_end:
+ port_num = port_num % 12
+ elif (port_num >= self.iom3_port_start and
+ port_num <= self.iom3_port_end):
+ port_num = port_num % 22
+
+ # Mask off the bit corresponding to our port
+ mask = (1 << port_num)
+
+ # LPMode is active high
+ if reg_value & mask == 0:
+ return False
+
+ return True
+
+ def set_low_power_mode(self, port_num, lpmode):
+
+ # Check for invalid port_num
+ if port_num < self.port_start or port_num > self.port_end:
+ return False
+
+ # port_num and i2c match
+ if port_num >= self.iom1_port_start and port_num <= self.iom1_port_end:
+ i2c_line = 14
+ elif (port_num >= self.iom2_port_start and
+ port_num <= self.iom2_port_end):
+ i2c_line = 15
+ elif (port_num >= self.iom3_port_start and
+ port_num <= self.iom3_port_end):
+ i2c_line = 16
+
+ try:
+ qsfp_path = self.BASE_VAL_PATH.format(i2c_line)+"qsfp_lpmode"
+ reg_file = open(qsfp_path, "r+")
+
+ except IOError as e:
+ print "Error: unable to open file: %s" % str(e)
+ return False
+
+ content = reg_file.readline().rstrip()
+
+ # Absence of IOM throws read error
+ if (content == 'read error'):
+ return False
+
+ # content is a string containing the hex representation of the register
+ reg_value = int(content, 16)
+
+ # Rationalize port settings
+ if port_num >= self.iom2_port_start and port_num <= self.iom2_port_end:
+ port_num = port_num % 12
+ elif (port_num >= self.iom3_port_start and
+ port_num <= self.iom3_port_end):
+ port_num = port_num % 22
+
+ # Mask off the bit corresponding to our port
+ mask = (1 << port_num)
+ # LPMode is active high; set or clear the bit accordingly
+ if lpmode is True:
+ reg_value = reg_value | mask
+ else:
+ reg_value = reg_value & ~mask
+
+ # Convert our register value back to a hex string and write back
+ content = hex(reg_value)
+
+ reg_file.seek(0)
+ reg_file.write(content)
+ reg_file.close()
+
+ return True
+
+ def reset(self, port_num):
+
+ # Check for invalid port_num
+ if port_num < self.port_start or port_num > self.port_end:
+ return False
+
+ # port_num and i2c match
+ if port_num >= self.iom1_port_start and port_num <= self.iom1_port_end:
+ i2c_line = 14
+ elif (port_num >= self.iom2_port_start and
+ port_num <= self.iom2_port_end):
+ i2c_line = 15
+ elif (port_num >= self.iom3_port_start and
+ port_num <= self.iom3_port_end):
+ i2c_line = 16
+
+ try:
+ qsfp_path = self.BASE_VAL_PATH.format(i2c_line)+"qsfp_lpmode"
+ reg_file = open(qsfp_path, "r+")
+
+ except IOError as e:
+ print "Error: unable to open file: %s" % str(e)
+ return False
+
+ content = reg_file.readline().rstrip()
+
+ # File content is a string containing the hex representation of th
+ reg_value = int(content, 16)
+
+ # Rationalize port settings
+ if port_num >= self.iom2_port_start and port_num <= self.iom2_port_end:
+ port_num = port_num % 12
+ elif (port_num >= self.iom3_port_start and
+ port_num <= self.iom3_port_end):
+ port_num = port_num % 22
+
+ # Mask off the bit corresponding to our port
+ mask = (1 << port_num)
+
+ # ResetL is active low
+ reg_value = reg_value & ~mask
+
+ # Convert our register value back to a hex string and write back
+ reg_file.seek(0)
+ reg_file.write(hex(reg_value))
+ reg_file.close()
+
+ # Sleep 1 second to allow it to settle
+ time.sleep(1)
+
+ # Flip the bit back high and write back to the register to take
+ # port out of reset
+ try:
+ qsfp_path = self.BASE_VAL_PATH.format(i2c_line)+"qsfp_lpmode"
+ reg_file = open(qsfp_path, "w+")
+
+ except IOError as e:
+ print "Error: unable to open file: %s" % str(e)
+ return False
+
+ reg_value = reg_value | mask
+ reg_file.seek(0)
+ reg_file.write(hex(reg_value))
+ reg_file.close()
+
+ return True