237 lines
7.7 KiB
Python
237 lines
7.7 KiB
Python
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import os.path
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import sys
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sys.path.append('/usr/share/sonic/platform/plugins')
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import pddfparse
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import json
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try:
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import time
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from ctypes import create_string_buffer
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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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class SfpUtil(SfpUtilBase):
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"""Platform generic PDDF SfpUtil class"""
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_port_to_eeprom_mapping = {}
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_port_start = 0
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_port_end = 0
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_port_to_type_mapping = {}
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_qsfp_ports = []
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_sfp_ports = []
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def __init__(self):
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SfpUtilBase.__init__(self)
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global pddf_obj
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global plugin_data
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with open(os.path.join(os.path.dirname(os.path.realpath(__file__)) + '/../pddf/pd-plugin.json')) as pd:
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plugin_data = json.load(pd)
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pddf_obj = pddfparse.PddfParse()
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self.platform = pddf_obj.get_platform()
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self._port_start = 0
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self._port_end = self.get_num_ports()
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for port_num in range(self._port_start, self._port_end):
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device = "PORT" + "%d" % (port_num+1)
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port_eeprom_path = pddf_obj.get_path(device, "eeprom")
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self._port_to_eeprom_mapping[port_num] = port_eeprom_path
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port_type = pddf_obj.get_device_type(device)
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self._port_to_type_mapping[port_num] = port_type
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self.populate_port_type(port_num)
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def get_num_ports(self):
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return int(self.platform['num_ports'])
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def is_valid_port(self, 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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else:
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return True
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def get_presence(self, 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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device = "PORT" + "%d" % (port_num+1)
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output = pddf_obj.get_attr_name_output(device, 'xcvr_present')
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if not output:
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return False
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#mode = output['mode']
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modpres = output['status'].rstrip()
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if 'XCVR' in plugin_data:
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if 'xcvr_present' in plugin_data['XCVR']:
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ptype = self._port_to_type_mapping[port_num]
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vtype = 'valmap-'+ptype
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if vtype in plugin_data['XCVR']['xcvr_present']:
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vmap = plugin_data['XCVR']['xcvr_present'][vtype]
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if modpres in vmap:
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return vmap[modpres]
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else:
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return False
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# if plugin_data doesn't specify anything regarding Transceivers
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if modpres == '1':
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return True
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return False
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def populate_port_type(self, port):
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if self._port_to_type_mapping[port] == 'QSFP' or self._port_to_type_mapping[port] == 'QSFP28':
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self._qsfp_ports.append(port)
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elif self._port_to_type_mapping[port] == 'SFP' or self._port_to_type_mapping[port] == 'SFP28':
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self._sfp_ports.append(port)
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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 - 1)
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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 qsfp_ports(self):
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return self._qsfp_ports
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def reset(self, 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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device = "PORT" + "%d" % (port_num+1)
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port_ps = pddf_obj.get_path(device, "xcvr_reset")
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if port_ps is None:
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return False
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try:
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reg_file = open(port_ps, '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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try:
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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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except IOError as e:
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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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if not self.get_presence(port_num):
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return False
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device = "PORT" + "%d" % (port_num+1)
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output = pddf_obj.get_attr_name_output(device, 'xcvr_lpmode')
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if not output:
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if port_num not in self.qsfp_ports:
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return False # Read from eeprom only for QSFP ports
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try:
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eeprom = None
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eeprom = open(self.port_to_eeprom_mapping[port_num], "rb")
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# check for valid connector type
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eeprom.seek(2)
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ctype = eeprom.read(1)
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if ctype in ['21', '23']:
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return False
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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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return True # Low Power Mode if "Power override" bit is 1 and "Power set" bit is 1
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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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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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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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else:
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#mode = output['mode']
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status = int(output['status'].rstrip())
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if status == 1:
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return True
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else:
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return False
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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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if not self.get_presence(port_num):
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return False # Port is not present, unable to set the eeprom
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device = "PORT" + "%d" % (port_num+1)
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port_ps = pddf_obj.get_path(device, "xcvr_lpmode")
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if port_ps is None:
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if port_num not in self.qsfp_ports:
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return False # Write to eeprom only for QSFP ports
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try:
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eeprom = None
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eeprom = open(self.port_to_eeprom_mapping[port_num], "r+b")
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# check for valid connector type
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eeprom.seek(2)
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ctype = eeprom.read(1)
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if ctype in ['21', '23']:
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return False
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# Fill in write buffer
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regval = 0x3 if lpmode else 0x1 # 0x3:Low Power Mode, 0x1:High Power Mode
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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.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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print("Error: unable to open file: %s" % str(e))
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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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else:
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try:
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f = open(port_ps, 'w')
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if lpmode:
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f.write('1')
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else:
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f.write('0')
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f.close()
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return True
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except IOError as e:
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return False
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def get_transceiver_change_event(self):
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"""
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TODO: This function need to be implemented
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when decide to support monitoring SFP(Xcvrd)
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on this platform.
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"""
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raise NotImplementedError
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def dump_sysfs(self):
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return pddf_obj.cli_dump_dsysfs('xcvr')
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