sonic-buildimage/device/accton/x86_64-accton_as9716_32d-r0/plugins/sfputil.py
jostar-yang 9129378097
[accton/as9716-32d] add support get_transceiver_change_event (#4105)
Co-authored-by: Jostar Yang <jostar_yang@accton.com.tw>
2020-04-22 22:54:48 -07:00

233 lines
6.8 KiB
Python

# sfputil.py
#
# Platform-specific SFP transceiver interface for SONiC
#
try:
import time
import os
import sys, getopt
from sonic_sfp.sfputilbase import SfpUtilBase
except ImportError as e:
raise ImportError("%s - required module not found" % str(e))
class SfpUtil(SfpUtilBase):
"""Platform-specific SfpUtil class"""
PORT_START = 0
PORT_END = 33
PORTS_IN_BLOCK = 34
BASE_OOM_PATH = "/sys/bus/i2c/devices/{0}-0050/"
BASE_CPLD1_PATH = "/sys/bus/i2c/devices/20-0061/"
BASE_CPLD2_PATH = "/sys/bus/i2c/devices/21-0062/"
_port_to_is_present = {}
_port_to_lp_mode = {}
_port_to_eeprom_mapping = {}
_port_to_i2c_mapping = {
0: [1, 25],
1: [2, 26],
2: [3, 27],
3: [4, 28],
4: [5, 29],
5: [6, 30],
6: [7, 31],
7: [8, 32],
8: [9, 33],
9: [10, 34],
10: [11, 35],
11: [12, 36],
12: [13, 37],
13: [14, 38],
14: [15, 39],
15: [16, 40],
16: [17, 41],
17: [18, 42],
18: [19, 43],
19: [20, 44],
20: [21, 45],
21: [22, 46],
22: [23, 47],
23: [24, 48],
24: [25, 49],
25: [26, 50],
26: [27, 51],
27: [28, 52],
28: [29, 53],
29: [30, 54],
30: [31, 55],
31: [32, 56],
32: [33, 57],
33: [34, 58],
}
@property
def port_start(self):
return self.PORT_START
@property
def port_end(self):
return self.PORT_END
@property
def qsfp_ports(self):
return range(self.PORT_START, self.PORTS_IN_BLOCK + 1)
@property
def port_to_eeprom_mapping(self):
return self._port_to_eeprom_mapping
def __init__(self):
eeprom_path = self.BASE_OOM_PATH + "eeprom"
for x in range(0, self.port_end+1):
self.port_to_eeprom_mapping[x] = eeprom_path.format(
self._port_to_i2c_mapping[x][1]
)
SfpUtilBase.__init__(self)
def get_presence(self, port_num):
# Check for invalid port_num
if port_num < self.port_start or port_num > self.port_end:
return False
if port_num < 16 :
present_path = self.BASE_CPLD1_PATH + "module_present_" + str(port_num+1)
else:
present_path = self.BASE_CPLD2_PATH + "module_present_" + str(port_num+1)
self.__port_to_is_present = present_path
content="0"
try:
val_file = open(self.__port_to_is_present)
content = val_file.readline().rstrip()
val_file.close()
except IOError as e:
print "Error: unable to access file: %s" % str(e)
return False
if content == "1":
return True
return False
def get_low_power_mode(self, port_num):
raise NotImplementedError
def set_low_power_mode(self, port_num, lpmode):
raise NotImplementedError
def reset(self, port_num):
if port_num < self.port_start or port_num > self.port_end:
return False
if port_num < 16 :
mod_rst_path = self.BASE_CPLD1_PATH + "module_reset_" + str(port_num+1)
else:
mod_rst_path = self.BASE_CPLD2_PATH + "module_reset_" + str(port_num+1)
self.__port_to_mod_rst = mod_rst_path
try:
reg_file = open(self.__port_to_mod_rst, 'r+')
except IOError as e:
print "Error: unable to open file: %s" % str(e)
return False
reg_value = '1'
reg_file.write(reg_value)
reg_file.close()
return True
def get_cpld_interrupt(self):
port_dict={}
for i in range(0,4):
if i==0 or i==1:
cpld_i2c_path = self.BASE_CPLD1_PATH + "cpld_intr_" + str(i+1)
else:
cpld_i2c_path = self.BASE_CPLD2_PATH + "cpld_intr_" +str(i+1)
start_i=(i*8)
end_i=(i*8+8)
try:
val_file = open(cpld_i2c_path)
except IOError as e:
print "Error: unable to open file: %s" % str(e)
for k in range (start_i, end_i):
port_dict[k]=0
return port_dict
status = val_file.readline().rstrip()
val_file.close()
status=status.strip()
status= int(status, 16)
interrupt_status = ~(status & 0xff)
if interrupt_status:
port_shift=0
for k in range (start_i, end_i):
if interrupt_status & (0x1<<port_shift):
port_dict[k]=1
else:
port_dict[k]=0
port_shift=port_shift+1
return port_dict
def get_transceiver_change_event(self, timeout=0):
start_time = time.time()
port_dict = {}
ori_present ={}
forever = False
if timeout == 0:
forever = True
elif timeout > 0:
timeout = timeout / float(1000) # Convert to secs
else:
print "get_transceiver_change_event:Invalid timeout value", timeout
return False, {}
end_time = start_time + timeout
if start_time > end_time:
print 'get_transceiver_change_event:' \
'time wrap / invalid timeout value', timeout
return False, {} # Time wrap or possibly incorrect timeout
#for i in range(self.port_start, self.port_end+1):
# ori_present[i]=self.get_presence(i)
while timeout >= 0:
change_status=0
port_dict = self.get_cpld_interrupt()
present=0
for key, value in port_dict.iteritems():
if value==1:
present=self.get_presence(key)
change_status=1
if present:
port_dict[key]='1'
else:
port_dict[key]='0'
if change_status:
return True, port_dict
if forever:
time.sleep(1)
else:
timeout = end_time - time.time()
if timeout >= 1:
time.sleep(1) # We poll at 1 second granularity
else:
if timeout > 0:
time.sleep(timeout)
return True, {}
print "get_evt_change_event: Should not reach here."
return False, {}