7ae509b3f8
Add device and platform code for ix7-bwde, ix8a-bwde. Support platform API 2.0 for all quanta platforms except for ix1b Co-authored-by: robert.hong <robert.hong@qct.io>
111 lines
2.9 KiB
Python
111 lines
2.9 KiB
Python
#
|
|
# fanutil.py
|
|
# Platform-specific Fan status interface for SONiC
|
|
#
|
|
|
|
import logging
|
|
import os.path
|
|
|
|
try:
|
|
from sonic_fan.fan_base import FanBase
|
|
except ImportError as e:
|
|
raise ImportError (str(e) + "- required module not found")
|
|
|
|
class FanUtil(FanBase):
|
|
"""Platform-specific FANutil class"""
|
|
|
|
SYS_FAN_NUM = 6
|
|
NUM_FANS_PERTRAY = 2
|
|
HWMON_PATH = '/sys/class/hwmon/hwmon2/'
|
|
FAN_INDEX_START = 18
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
def __init__(self, log_level=logging.DEBUG):
|
|
FanBase.__init__(self)
|
|
self.num_fans = (self.SYS_FAN_NUM * self.NUM_FANS_PERTRAY)
|
|
|
|
# Get sysfs attribute
|
|
def get_attr_value(self, attr_path):
|
|
|
|
retval = 'ERR'
|
|
if (not os.path.isfile(attr_path)):
|
|
return retval
|
|
|
|
try:
|
|
with open(attr_path, 'r') as fd:
|
|
retval = fd.read()
|
|
except Exception:
|
|
logging.error("Unable to open ", attr_path, " file !")
|
|
|
|
retval = retval.rstrip('\r\n')
|
|
return retval
|
|
|
|
def check_fan_index(self, index):
|
|
if index is None:
|
|
return False
|
|
|
|
if index < 1 or index > self.num_fans:
|
|
logging.error("Invalid Fan index:", index)
|
|
return False
|
|
|
|
return True
|
|
|
|
def get_num_fans(self):
|
|
return self.num_fans
|
|
|
|
def get_status(self, index):
|
|
if self.check_fan_index(index) == False:
|
|
return False
|
|
|
|
fantray_speed_file = 'fan' + str(self.FAN_INDEX_START+(index-1)) + '_input'
|
|
fantray_speed = self.get_attr_value(self.HWMON_PATH + fantray_speed_file)
|
|
|
|
if fantray_speed == '0.0' :
|
|
return False
|
|
|
|
return True
|
|
|
|
def get_presence(self, index):
|
|
if self.check_fan_index(index) == False:
|
|
return False
|
|
|
|
fantray_present_file = 'fan' + str(self.FAN_INDEX_START+(index-1)) + '_present'
|
|
fantray_present = self.get_attr_value(self.HWMON_PATH + fantray_present_file)
|
|
|
|
if fantray_present == '1' :
|
|
return True
|
|
|
|
return False
|
|
|
|
def get_direction(self, index):
|
|
if self.check_fan_index(index) == False:
|
|
return None
|
|
|
|
fantray_direction_file = 'fan' + str(self.FAN_INDEX_START+(index-1)) + '_direction'
|
|
fantray_direction = self.get_attr_value(self.HWMON_PATH + fantray_direction_file)
|
|
|
|
"""
|
|
1: FB 2: BF
|
|
Since the fan is at rear of the switch, FB means Exhaust; BF means Intake
|
|
"""
|
|
if fantray_direction == '2':
|
|
return "INTAKE"
|
|
else:
|
|
return "EXHAUST"
|
|
|
|
def get_speed(self, index):
|
|
if self.check_fan_index(index) == False:
|
|
return 0
|
|
|
|
fantray_speed_file = 'fan' + str(self.FAN_INDEX_START+(index-1)) + '_input'
|
|
fantray_speed = self.get_attr_value(self.HWMON_PATH + fantray_speed_file)
|
|
|
|
return int(float(fantray_speed))
|
|
|
|
|
|
def set_speed(self, val):
|
|
logging.error("Not allowed to set fan speed!")
|
|
|
|
return False
|