From 1b20ea1680e7f781467e2c825f5420899ba7ef38 Mon Sep 17 00:00:00 2001 From: paavaanan Date: Wed, 25 Oct 2017 01:27:20 +0530 Subject: [PATCH] [Dell]: Added support for S6100 sfputil.py (#1073) Check SFP Presence, toggling lpmode, reset, and print eeprom details --- .../plugins/sfputil.py | 442 +++++++++++++++++- 1 file changed, 424 insertions(+), 18 deletions(-) diff --git a/device/dell/x86_64-dell_s6100_c2538-r0/plugins/sfputil.py b/device/dell/x86_64-dell_s6100_c2538-r0/plugins/sfputil.py index 534e587ae7..d6fbcbcf69 100644 --- a/device/dell/x86_64-dell_s6100_c2538-r0/plugins/sfputil.py +++ b/device/dell/x86_64-dell_s6100_c2538-r0/plugins/sfputil.py @@ -1,27 +1,433 @@ -#!/usr/bin/env python +# sfputil.py +# +# Platform-specific SFP transceiver interface for SONiC +# +# +-i2c----+--------+ +# | 6 | 7 | +# | +-------------+ | +# | |IOM1 | IOM3 | | +# | |IOM2 | IOM4 | | +# | +-------------+ | +# | 8 | 9 | +# +--------+--------+ + try: - from sonic_sfp.sfputilbase import sfputilbase -except ImportError, e: - raise ImportError (str(e) + "- required module not found") + import time + import os + 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""" +class SfpUtil(SfpUtilBase): + """Platform-specific SfpUtil class""" - port_start = 0 - port_end = 63 - ports_in_block = 64 + PORT_START = 0 + PORT_END = 63 + PORTS_IN_BLOCK = 64 - eeprom_offset = 18 + _port_to_eeprom_mapping = {} + _port_to_i2c_mapping = { + 0: [6, 18, 34, 50, 66], + 1: [6, 19, 35, 51, 67], + 2: [6, 20, 36, 52, 68], + 3: [6, 21, 37, 53, 69], + 4: [6, 22, 38, 54, 70], + 5: [6, 23, 39, 55, 71], + 6: [6, 24, 40, 56, 72], + 7: [6, 25, 41, 57, 73], + 8: [6, 26, 42, 58, 74], + 9: [6, 27, 43, 59, 75], + 10: [6, 28, 44, 60, 76], + 11: [6, 29, 45, 61, 77], + 12: [6, 30, 46, 62, 78], + 13: [6, 31, 47, 63, 79], + 14: [6, 32, 48, 64, 80], + 15: [6, 33, 49, 65, 81], + 16: [8, 18, 34, 50, 66], + 17: [8, 19, 35, 51, 67], + 18: [8, 20, 36, 52, 68], + 19: [8, 21, 37, 53, 69], + 20: [8, 22, 38, 54, 70], + 21: [8, 23, 39, 55, 71], + 22: [8, 24, 40, 56, 72], + 23: [8, 25, 41, 57, 73], + 24: [8, 26, 42, 58, 74], + 25: [8, 27, 43, 59, 75], + 26: [8, 28, 44, 60, 76], + 27: [8, 29, 45, 61, 77], + 28: [8, 30, 46, 62, 78], + 29: [8, 31, 47, 63, 79], + 30: [8, 32, 48, 64, 80], + 31: [8, 33, 49, 65, 81], + 32: [7, 18, 34, 50, 66], + 33: [7, 19, 35, 51, 67], + 34: [7, 20, 36, 52, 68], + 35: [7, 21, 37, 53, 69], + 36: [7, 22, 38, 54, 70], + 37: [7, 23, 39, 55, 71], + 38: [7, 24, 40, 56, 72], + 39: [7, 25, 41, 57, 73], + 40: [7, 26, 42, 58, 74], + 41: [7, 27, 43, 59, 75], + 42: [7, 28, 44, 60, 76], + 43: [7, 29, 45, 61, 77], + 44: [7, 30, 46, 62, 78], + 45: [7, 31, 47, 63, 79], + 46: [7, 32, 48, 64, 80], + 47: [7, 33, 49, 65, 81], + 48: [9, 18, 34, 50, 66], + 49: [9, 19, 35, 51, 67], + 50: [9, 20, 36, 52, 68], + 51: [9, 21, 37, 53, 69], + 52: [9, 22, 38, 54, 70], + 53: [9, 23, 39, 55, 71], + 54: [9, 24, 40, 56, 72], + 55: [9, 25, 41, 57, 73], + 56: [9, 26, 42, 58, 74], + 57: [9, 27, 43, 59, 75], + 58: [9, 28, 44, 60, 76], + 59: [9, 29, 45, 61, 77], + 60: [9, 30, 46, 62, 78], + 61: [9, 31, 47, 63, 79], + 62: [9, 32, 48, 64, 80], + 63: [9, 33, 49, 65, 81] +} - port_to_eeprom_mapping = {} + IOM_1_PORT_START = 0 + IOM_1_PORT_END = 15 - _qsfp_ports = range(0, ports_in_block + 1) + IOM_2_PORT_START = 16 + IOM_2_PORT_END = 31 - 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): - self.port_to_eeprom_mapping[x] = eeprom_path.format(x + self.eeprom_offset) - sfputilbase.__init__(self, port_num) + IOM_3_PORT_START = 32 + IOM_3_PORT_END = 47 + + IOM_4_PORT_START = 48 + IOM_4_PORT_END = 63 + + BASE_VAL_PATH="/sys/class/i2c-adapter/i2c-{0}/{0}-003e/" + + + @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 iom4_port_start(self): + return self.IOM_4_PORT_START + + @property + def iom4_port_end(self): + return self.IOM_4_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" + global port_to_eeprom_path + + for port_num in range(0, self.port_end + 1): + if port_num >= self.iom1_port_start and port_num <= self.iom1_port_end: + assigned=0 + #i2c-6 + for x in range(1,5): + port_to_eeprom_path = eeprom_path.format(self.port_to_i2c_mapping[port_num][0], self.port_to_i2c_mapping[port_num][x]) + if ( os.path.isfile(port_to_eeprom_path) ): + self.port_to_eeprom_mapping[port_num]=port_to_eeprom_path + assigned=1 + elif (not assigned): + self.port_to_eeprom_mapping[port_num]="No IOM" + + elif port_num >= self.iom2_port_start and port_num <= self.iom2_port_end: + assigned=0 + #i2c-8 + for x in range(1,5): + port_to_eeprom_path = eeprom_path.format(self.port_to_i2c_mapping[port_num][0], self.port_to_i2c_mapping[port_num][x]) + if ( os.path.isfile(port_to_eeprom_path) ): + self.port_to_eeprom_mapping[port_num]=port_to_eeprom_path + assigned=1 + elif (not assigned): + self.port_to_eeprom_mapping[port_num]="No IOM" + + elif port_num >= self.iom3_port_start and port_num <= self.iom3_port_end: + assigned=0 + #i2c-7 + for x in range(1,5): + port_to_eeprom_path = eeprom_path.format(self.port_to_i2c_mapping[port_num][0], self.port_to_i2c_mapping[port_num][x]) + if ( os.path.isfile(port_to_eeprom_path) ): + self.port_to_eeprom_mapping[port_num]=port_to_eeprom_path + assigned=1 + elif (not assigned): + self.port_to_eeprom_mapping[port_num]="No IOM" + + + elif port_num >= self.iom4_port_start and port_num <= self.iom4_port_end: + assigned=0 + #i2c-9 + for x in range(1,5): + port_to_eeprom_path = eeprom_path.format(self.port_to_i2c_mapping[port_num][0], self.port_to_i2c_mapping[port_num][x]) + if ( os.path.isfile(port_to_eeprom_path) ): + self.port_to_eeprom_mapping[port_num]=port_to_eeprom_path + assigned=1 + elif (not assigned): + self.port_to_eeprom_mapping[port_num]="No IOM" + + 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=16 + elif port_num >= self.iom3_port_start and port_num <= self.iom3_port_end: + i2c_line=15 + elif port_num >= self.iom4_port_start and port_num <= self.iom4_port_end: + i2c_line=17 + + 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 > 15: + port_num=port_num%16 + + # 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=16 + elif port_num >= self.iom3_port_start and port_num <= self.iom3_port_end: + i2c_line=15 + elif port_num >= self.iom4_port_start and port_num <= self.iom4_port_end: + i2c_line=17 + + 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 > 15: + port_num=port_num%16 + + # 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=16 + elif port_num >= self.iom3_port_start and port_num <= self.iom3_port_end: + i2c_line=15 + elif port_num >= self.iom4_port_start and port_num <= self.iom4_port_end: + i2c_line=17 + + 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 > 15: + port_num=port_num%16 + + # 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): + + 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=16 + elif port_num >= self.iom3_port_start and port_num <= self.iom3_port_end: + i2c_line=15 + elif port_num >= self.iom4_port_start and port_num <= self.iom4_port_end: + i2c_line=17 + + 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'): + print("it's empty"); + return False + + # File content is a string containing the hex representation of the register + reg_value = int(content, 16) + + #Rationalize port settings + if port_num > 15: + port_num=port_num%16 + + # 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