[as9716-32d] Add to support lpmode for sfputil (#5171)
Implement code to set/get lpmode for as9716-32d platform
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device/accton/x86_64-accton_as9716_32d-r0/plugins/sfputil.py
Normal file → Executable file
60
device/accton/x86_64-accton_as9716_32d-r0/plugins/sfputil.py
Normal file → Executable file
@ -7,6 +7,7 @@ try:
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import time
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import os
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import sys, getopt
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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("%s - required module not found" % str(e))
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@ -115,10 +116,65 @@ class SfpUtil(SfpUtilBase):
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return False
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def get_low_power_mode(self, port_num):
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raise NotImplementedError
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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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try:
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eeprom = None
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if not self.get_presence(port_num):
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return False
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eeprom = open(self.port_to_eeprom_mapping[port_num], "rb")
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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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return False # 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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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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def set_low_power_mode(self, port_num, lpmode):
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raise NotImplementedError
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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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try:
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eeprom = None
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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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# Fill in write buffer
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# 0x3:Low Power Mode. "Power override" bit is 1 and "Power set" bit is 1
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# 0x9:High Power Mode. "Power override" bit is 1 ,"Power set" bit is 0 and "High Power Class Enable" bit is 1
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regval = 0x3 if lpmode else 0x9
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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 = open(self.port_to_eeprom_mapping[port_num], "r+b")
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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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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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