104 lines
3.6 KiB
Python
104 lines
3.6 KiB
Python
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#!/usr/bin/env python
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#
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# Name: juniper_sfp_init.py version: 1.0
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#
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# Description: Platform-specific SFP Transceiver Initialization for Juniper QFX5200
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#
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# Copyright (c) 2020, Juniper Networks, Inc.
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# All rights reserved.
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#
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# Notice and Disclaimer: This code is licensed to you under the GNU General
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# Public License as published by the Free Software Foundation, version 3 or
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# any later version. This code is not an official Juniper product. You can
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# obtain a copy of the License at <https://www.gnu.org/licenses/>
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#
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# OSS License:
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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#
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# Third-Party Code: This code may depend on other components under separate
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# copyright notice and license terms. Your use of the source code for those
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# components is subject to the terms and conditions of the respective license
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# as noted in the Third-Party source code file.
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import time
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import os.path
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import sfputil as jnpr_sfp
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from pprint import pprint
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DEBUG = False
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def i2c_eeprom_dev_update(port, create_eeprom):
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eeprom_path = "/sys/class/i2c-adapter/i2c-{0}/{0}-0050/eeprom"
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i2c_path = "/sys/class/i2c-adapter/i2c-{0}"
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i2c_port = port + jnpr_sfp.SFP_I2C_OFFSET
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port_eeprom_path = eeprom_path.format(i2c_port)
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port_i2c_path = i2c_path.format(i2c_port)
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if create_eeprom:
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if not os.path.exists(port_eeprom_path):
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try:
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i2c_file = open(port_i2c_path + "/new_device", "w")
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i2c_file.write("optoe2 0x50")
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except IOError as e:
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print "Error: unable to write to i2c file: %s" % str(e)
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return
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else:
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if os.path.exists(port_eeprom_path):
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try:
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i2c_file = open(port_i2c_path + "/delete_device", "w")
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i2c_file.write("0x50")
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except IOError as e:
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print "Error: unable to write to i2c file: %s" % str(e)
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return
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def gpio_sfp_init():
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jnpr_sfp.gpio_sfp_base_init()
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time.sleep(2)
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#Reset all ports
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for port in range(jnpr_sfp.GPIO_PORT_START, jnpr_sfp.GPIO_PORT_END + 1):
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port_inited = False
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if jnpr_sfp.gpio_sfp_presence_get(port):
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port_inited = jnpr_sfp.gpio_sfp_reset_set(port, 0)
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if port_inited:
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i2c_eeprom_dev_update(port, True)
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else:
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i2c_eeprom_dev_update(port, False)
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time.sleep(2)
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#Enable optics for all ports which have XCVRs present
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for port in range(jnpr_sfp.GPIO_PORT_START, jnpr_sfp.GPIO_PORT_END + 1):
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if jnpr_sfp.gpio_sfp_presence_get(port):
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jnpr_sfp.gpio_sfp_lpmode_set(port, 1)
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time.sleep(2)
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if __name__ == '__main__':
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if DEBUG == True:
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print "Initializing Juniper SFP module"
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gpio_sfp_init()
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if DEBUG == True:
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print "Juniper GPIO presence pin mapping:"
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pprint(jnpr_sfp.gpio_sfp_presence)
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print "Juniper GPIO reset pin mapping:"
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pprint(jnpr_sfp.gpio_sfp_reset)
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print "Juniper GPIO lpmode pin mapping:"
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pprint(jnpr_sfp.gpio_sfp_lpmode)
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