diff --git a/device/accton/x86_64-accton_as7716_32x-r0/plugins/sfputil.py b/device/accton/x86_64-accton_as7716_32x-r0/plugins/sfputil.py index 98e1278ca7..9c84f1b7e1 100755 --- a/device/accton/x86_64-accton_as7716_32x-r0/plugins/sfputil.py +++ b/device/accton/x86_64-accton_as7716_32x-r0/plugins/sfputil.py @@ -5,6 +5,8 @@ try: import time + import string + from ctypes import create_string_buffer from sonic_sfp.sfputilbase import SfpUtilBase except ImportError as e: raise ImportError("%s - required module not found" % str(e)) @@ -108,11 +110,63 @@ class SfpUtil(SfpUtilBase): return False - def get_low_power_mode(self, port_num): - raise NotImplementedError - - def set_low_power_mode(self, port_num, lpmode): - raise NotImplementedError + 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 + + try: + eeprom = None + + if not self.get_presence(port_num): + return False + + eeprom = open(self.port_to_eeprom_mapping[port_num], "rb") + eeprom.seek(93) + lpmode = ord(eeprom.read(1)) + + if ((lpmode & 0x3) == 0x3): + return True # Low Power Mode if "Power override" bit is 1 and "Power set" bit is 1 + else: + return False # High Power Mode if one of the following conditions is matched: + # 1. "Power override" bit is 0 + # 2. "Power override" bit is 1 and "Power set" bit is 0 + except IOError as e: + print "Error: unable to open file: %s" % str(e) + return False + finally: + if eeprom is not None: + eeprom.close() + time.sleep(0.01) + + 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 + + try: + eeprom = None + + if not self.get_presence(port_num): + return False # Port is not present, unable to set the eeprom + + # Fill in write buffer + regval = 0x3 if lpmode else 0x1 # 0x3:Low Power Mode, 0x1:High Power Mode + buffer = create_string_buffer(1) + buffer[0] = chr(regval) + + # Write to eeprom + eeprom = open(self.port_to_eeprom_mapping[port_num], "r+b") + eeprom.seek(93) + eeprom.write(buffer[0]) + return True + except IOError as e: + print "Error: unable to open file: %s" % str(e) + return False + finally: + if eeprom is not None: + eeprom.close() + time.sleep(0.01) def reset(self, port_num): if port_num < self.port_start or port_num > self.port_end: