1ffb34b4e3
* Updating Z9264f for A01 board * Adding platform_reboot plugin to Z9264f * Change execute mode for platform_reboot * Indenting python files * Adding missed service file * Addressing code review comments * Modified the polling logic in transceiver change event
228 lines
6.1 KiB
Python
228 lines
6.1 KiB
Python
# sfputil.py
|
|
#
|
|
# Platform-specific SFP transceiver interface for SONiC
|
|
#
|
|
|
|
try:
|
|
import struct
|
|
import sys
|
|
import getopt
|
|
import time
|
|
from sonic_sfp.sfputilbase import SfpUtilBase
|
|
from os import *
|
|
from mmap import *
|
|
|
|
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 = 63
|
|
PORTS_IN_BLOCK = 32
|
|
|
|
BASE_RES_PATH = "/sys/bus/pci/devices/0000:04:00.0/resource0"
|
|
|
|
_port_to_eeprom_mapping = {}
|
|
|
|
_global_port_pres_dict = {}
|
|
|
|
@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(0, self.PORTS_IN_BLOCK + 1)
|
|
|
|
@property
|
|
def port_to_eeprom_mapping(self):
|
|
return self._port_to_eeprom_mapping
|
|
|
|
def pci_mem_read(self, mm, offset):
|
|
mm.seek(offset)
|
|
read_data_stream=mm.read(4)
|
|
reg_val=struct.unpack('I',read_data_stream)
|
|
mem_val = str(reg_val)[1:-2]
|
|
# print "reg_val read:%x"%reg_val
|
|
return mem_val
|
|
|
|
def pci_mem_write(self, mm, offset, data):
|
|
mm.seek(offset)
|
|
# print "data to write:%x"%data
|
|
mm.write(struct.pack('I',data))
|
|
|
|
def pci_set_value(self, resource, val, offset):
|
|
fd = open(resource, O_RDWR)
|
|
mm = mmap(fd, 0)
|
|
val = self.pci_mem_write(mm, offset, val)
|
|
mm.close()
|
|
close(fd)
|
|
return val
|
|
|
|
def pci_get_value(self, resource, offset):
|
|
fd = open(resource, O_RDWR)
|
|
mm = mmap(fd, 0)
|
|
val = self.pci_mem_read(mm, offset)
|
|
mm.close()
|
|
close(fd)
|
|
return val
|
|
|
|
def init_global_port_presence(self):
|
|
for port_num in range(self.port_start, (self.port_end + 1)):
|
|
presence = self.get_presence(port_num)
|
|
if(presence):
|
|
self._global_port_pres_dict[port_num] = '1'
|
|
else:
|
|
self._global_port_pres_dict[port_num] = '0'
|
|
|
|
def __init__(self):
|
|
eeprom_path = "/sys/class/i2c-adapter/i2c-{0}/{0}-0050/eeprom"
|
|
|
|
for x in range(0, self.port_end + 1):
|
|
port_num = x + 2
|
|
self.port_to_eeprom_mapping[x] = eeprom_path.format(
|
|
port_num)
|
|
port_num = 0
|
|
self.init_global_port_presence()
|
|
|
|
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
|
|
|
|
# Port offset starts with 0x4004
|
|
port_offset = 16388 + ((port_num) * 16)
|
|
|
|
status = self.pci_get_value(self.BASE_RES_PATH, port_offset)
|
|
reg_value = int(status)
|
|
|
|
# Absence of status throws error
|
|
if (reg_value == "" ):
|
|
return False
|
|
|
|
# Mask off 4th bit for presence
|
|
mask = (1 << 4)
|
|
|
|
# ModPrsL is active low
|
|
if reg_value & mask == 0:
|
|
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
|
|
|
|
# Port offset starts with 0x4000
|
|
port_offset = 16384 + ((port_num) * 16)
|
|
|
|
status = self.pci_get_value(self.BASE_RES_PATH, port_offset)
|
|
reg_value = int(status)
|
|
|
|
# Absence of status throws error
|
|
if (reg_value == "" ):
|
|
return False
|
|
|
|
# Mask off 4th bit for presence
|
|
mask = (1 << 6)
|
|
|
|
# LPMode is active high
|
|
if reg_value & mask == 0:
|
|
return False
|
|
|
|
return True
|
|
|
|
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
|
|
|
|
# Port offset starts with 0x4000
|
|
port_offset = 16384 + ((port_num) * 16)
|
|
|
|
status = self.pci_get_value(self.BASE_RES_PATH, port_offset)
|
|
reg_value = int(status)
|
|
|
|
# Absence of status throws error
|
|
if (reg_value == "" ):
|
|
return False
|
|
|
|
# Mask off 4th bit for presence
|
|
mask = (1 << 6)
|
|
|
|
# LPMode is active high; set or clear the bit accordingly
|
|
if lpmode is True:
|
|
reg_value = reg_value | mask
|
|
else:
|
|
reg_value = reg_value & ~mask
|
|
|
|
# Convert our register value back to a hex string and write back
|
|
status = self.pci_set_value(self.BASE_RES_PATH, reg_value, port_offset)
|
|
|
|
return True
|
|
|
|
def reset(self, port_num):
|
|
|
|
# Check for invalid port_num
|
|
if port_num < self.port_start or port_num > self.port_end:
|
|
return False
|
|
|
|
# Port offset starts with 0x4000
|
|
port_offset = 16384 + ((port_num) * 16)
|
|
|
|
status = self.pci_get_value(self.BASE_RES_PATH, port_offset)
|
|
reg_value = int(status)
|
|
|
|
# Absence of status throws error
|
|
if (reg_value == "" ):
|
|
return False
|
|
|
|
# Mask off 4th bit for presence
|
|
mask = (1 << 6)
|
|
|
|
# ResetL is active low
|
|
reg_value = reg_value & ~mask
|
|
|
|
# Convert our register value back to a hex string and write back
|
|
status = self.pci_set_value(self.BASE_RES_PATH, reg_value, port_offset)
|
|
|
|
# Sleep 1 second to allow it to settle
|
|
time.sleep(1)
|
|
|
|
reg_value = reg_value | mask
|
|
|
|
# Convert our register value back to a hex string and write back
|
|
status = self.pci_set_value(self.BASE_RES_PATH, reg_value, port_offset)
|
|
|
|
return True
|
|
|
|
def get_transceiver_change_event(self):
|
|
port_dict = {}
|
|
while True:
|
|
for port_num in range(self.port_start, (self.port_end + 1)):
|
|
presence = self.get_presence(port_num)
|
|
if(presence and self._global_port_pres_dict[port_num] == '0'):
|
|
self._global_port_pres_dict[port_num] = '1'
|
|
port_dict[port_num] = '1'
|
|
elif(not presence and
|
|
self._global_port_pres_dict[port_num] == '1'):
|
|
self._global_port_pres_dict[port_num] = '0'
|
|
port_dict[port_num] = '0'
|
|
|
|
if(len(port_dict) > 0):
|
|
return True, port_dict
|
|
|
|
time.sleep(0.5)
|