892f26556c
As part of platform hardening this commit fixes several platform issues in various components like PSU, FAN, Temperature, LED.
143 lines
4.7 KiB
Python
143 lines
4.7 KiB
Python
# Platform-specific SFP transceiver interface for SONiC
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#
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try:
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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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PORT_START = 1
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PORT_END = 56
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SFP_PORT_START = 49
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SFP_PORT_END = 56
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SFP_I2C_BUS_START = 0xa
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PORTS_IN_BLOCK = 56
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_port_to_eeprom_mapping = {}
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sfp_status_dict = {}
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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 list(range(self.PORT_START, self.PORTS_IN_BLOCK + 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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def __init__(self):
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# Override port_to_eeprom_mapping for class initialization
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eeprom_path = '/sys/bus/i2c/devices/i2c-{0}/{0}-0050/eeprom'
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for port_idx in range(self.SFP_PORT_START, self.SFP_PORT_END + 1):
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self._port_to_eeprom_mapping[port_idx] = eeprom_path.format(self.SFP_I2C_BUS_START + (port_idx - self.SFP_PORT_START))
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self.sfp_status_dict[port_idx] = 0 #Initialize all modules as absent/removed
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SfpUtilBase.__init__(self)
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def get_presence(self, port_num):
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# Check for invalid port_num
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if port_num < self.SFP_PORT_START or port_num > self.SFP_PORT_END:
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return False
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sfp_status_path = "/sys/devices/pci0000:00/0000:00:12.0/i2c-0/i2c-9/i2c-{0}/{0}-0066/xcvr_present"\
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.format(self.SFP_I2C_BUS_START + (port_num - self.SFP_PORT_START))
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try:
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with open(sfp_status_path, 'r') as fd:
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status = fd.read().rstrip('\r\n')
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if status == '0':
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return True
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else:
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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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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.SFP_PORT_START or port_num > self.SFP_PORT_END:
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return False
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sfp_lpmode_path = "/sys/devices/pci0000:00/0000:00:12.0/i2c-0/i2c-9/i2c-{0}/{0}-0066/xcvr_lpmode"\
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.format(self.SFP_I2C_BUS_START + (port_num - self.SFP_PORT_START))
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try:
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with open(sfp_lpmode_path, 'r') as fd:
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status = fd.read().rstrip('\r\n')
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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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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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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.SFP_PORT_START or port_num > self.SFP_PORT_END:
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return False
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sfp_lpmode_path = "/sys/devices/pci0000:00/0000:00:12.0/i2c-0/i2c-9/i2c-{0}/{0}-0066/xcvr_lpmode"\
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.format(self.SFP_I2C_BUS_START + (port_num - self.SFP_PORT_START))
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try:
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with open(sfp_lpmode_path, 'w') as fd:
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if lpmode:
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fd.write('1')
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else:
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fd.write('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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return False
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def reset(self, port_num):
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# SFP reset is not supported
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return False
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def get_transceiver_change_event(self, timeout=0):
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sfp_dict = {}
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SFP_REMOVED = '0'
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SFP_INSERTED = '1'
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SFP_PRESENT = True
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SFP_ABSENT = False
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start_time = time.time()
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time_period = timeout/float(1000) #Convert msecs to secs
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while time.time() < (start_time + time_period) or timeout == 0:
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for port_idx in range(self.SFP_PORT_START, self.SFP_PORT_END + 1):
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if self.sfp_status_dict[port_idx] == SFP_REMOVED and \
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self.get_presence(port_idx) == SFP_PRESENT:
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sfp_dict[str(port_idx)] = SFP_INSERTED
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self.sfp_status_dict[port_idx] = SFP_INSERTED
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elif self.sfp_status_dict[port_idx] == SFP_INSERTED and \
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self.get_presence(port_idx) == SFP_ABSENT:
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sfp_dict[str(port_idx)] = SFP_REMOVED
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self.sfp_status_dict[port_idx] = SFP_REMOVED
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if sfp_dict != {}:
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return (True, {'sfp':sfp_dict})
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time.sleep(0.5)
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return (True, {}) # Timeout
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