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[Mellanox] SFP new platform API implementation #2944

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merged 2 commits into from
May 29, 2019
Merged

[Mellanox] SFP new platform API implementation #2944

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6215a90
add sfp new api
keboliu May 15, 2019
2c313c9
fix get presence
keboliu May 16, 2019
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31 changes: 30 additions & 1 deletion platform/mellanox/mlnx-platform-api/sonic_platform/chassis.py
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Original file line number Diff line number Diff line change
Expand Up @@ -15,15 +15,24 @@
from sonic_platform.psu import Psu
from sonic_platform.fan import Fan
from sonic_platform.fan import FAN_PATH
from sonic_platform.sfp import SFP
from sonic_platform.watchdog import get_watchdog
from os import listdir
from os.path import isfile, join
import re
import subprocess
except ImportError as e:
raise ImportError (str(e) + "- required module not found")

MLNX_NUM_PSU = 2

GET_HWSKU_CMD = "sonic-cfggen -d -v DEVICE_METADATA.localhost.hwsku"

# magic code defnition for port number, qsfp port position of each hwsku
# port_position_tuple = (PORT_START, QSFP_PORT_START, PORT_END, PORT_IN_BLOCK, EEPROM_OFFSET)
hwsku_dict = {'ACS-MSN2700': 0, "LS-SN2700":0, 'ACS-MSN2740': 0, 'ACS-MSN2100': 1, 'ACS-MSN2410': 2, 'ACS-MSN2010': 3, 'ACS-MSN3700': 0, 'ACS-MSN3700C': 0, 'Mellanox-SN2700': 0, 'Mellanox-SN2700-D48C8': 0}
port_position_tuple_list = [(0, 0, 31, 32, 1), (0, 0, 15, 16, 1), (0, 48, 55, 56, 1),(0, 18, 21, 22, 1)]

class Chassis(ChassisBase):
"""Platform-specific Chassis class"""

Expand All @@ -50,6 +59,20 @@ def __init__(self):
fan = Fan(index, index)
self._fan_list.append(fan)

# Initialize SFP list
port_position_tuple = self._get_port_position_tuple_by_sku_name()
self.PORT_START = port_position_tuple[0]
self.QSFP_PORT_START = port_position_tuple[1]
self.PORT_END = port_position_tuple[2]
self.PORTS_IN_BLOCK = port_position_tuple[3]

for index in range(self.PORT_START, self.PORT_END + 1):
if index in range(QSFP_PORT_START, self.PORTS_IN_BLOCK + 1):
sfp_module = SFP(index, 'QSFP')
else:
sfp_module = SFP(index, 'SFP')
self._psu_list.append(sfp_module)

def _extract_num_of_fans_and_fan_drawers(self):
num_of_fan = 0
num_of_drawer = 0
Expand All @@ -64,7 +87,13 @@ def _extract_num_of_fans_and_fan_drawers(self):
if match_obj != None and int(match_obj.group(1)) > num_of_drawer:
num_of_drawer = int(match_obj.group(1))

return num_of_fan, num_of_drawer
return num_of_fan, num_of_drawer

def _get_port_position_tuple_by_sku_name(self):
p = subprocess.Popen(GET_HWSKU_CMD, shell=True, stdout=subprocess.PIPE)
out, err = p.communicate()
position_tuple = port_position_tuple_list[hwsku_dict[out.rstrip('\n')]]
return position_tuple



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