289 lines
8.8 KiB
Python
Executable File
289 lines
8.8 KiB
Python
Executable File
# sfputil.py
|
|
#
|
|
# Platform-specific SFP transceiver interface for SONiC
|
|
#
|
|
|
|
try:
|
|
import time
|
|
import os
|
|
import sys, getopt
|
|
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))
|
|
|
|
|
|
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):
|
|
# 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
|
|
# 0x3:Low Power Mode. "Power override" bit is 1 and "Power set" bit is 1
|
|
# 0x9:High Power Mode. "Power override" bit is 1 ,"Power set" bit is 0 and "High Power Class Enable" bit is 1
|
|
regval = 0x3 if lpmode else 0x9
|
|
|
|
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:
|
|
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, {} |