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sonic-buildimage/platform/mellanox/mlnx-platform-api/sonic_platform/sfp.py
Kebo Liu bf4a2e3002
[Mellanox] Revert LPM implementation to the old way (#17096) 
- Why I did it
The current low power mode setting implementation requests the user to set the port to admin down first before toggling LP mode, this is not backward compatible, now revert it to the old way so that the user can toggle the LP mode regardless of the port admin status.

- How I did it
Revert the recent changes related to LPM in PR #14130 and #16545

- How to verify it
Run all sfputil and SFP platform API related tests on all the Mellanox platforms.

Signed-off-by: Kebo Liu <kebol@nvidia.com>
2023-11-27 13:23:04 +02:00

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#
# Copyright (c) 2019-2023 NVIDIA CORPORATION & AFFILIATES.
# Apache-2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
#############################################################################
# Mellanox
#
# Module contains an implementation of SONiC Platform Base API and
# provides the FANs status which are available in the platform
#
#############################################################################
try:
import ctypes
import subprocess
import os
from sonic_py_common.logger import Logger
from sonic_py_common.general import check_output_pipe
from . import utils
from .device_data import DeviceDataManager
from sonic_platform_base.sonic_xcvr.sfp_optoe_base import SfpOptoeBase
except ImportError as e:
raise ImportError (str(e) + "- required module not found")
try:
# python_sdk_api does not support python3 for now. Daemons like thermalctld or psud
# also import this file without actually use the sdk lib. So we catch the ImportError
# and ignore it here. Meanwhile, we have to trigger xcvrd using python2 now because it
# uses the sdk lib.
from python_sdk_api.sxd_api import *
from python_sdk_api.sx_api import *
except ImportError as e:
pass
# Define the sdk constants
SX_PORT_MODULE_STATUS_INITIALIZING = 0
SX_PORT_MODULE_STATUS_PLUGGED = 1
SX_PORT_MODULE_STATUS_UNPLUGGED = 2
SX_PORT_MODULE_STATUS_PLUGGED_WITH_ERROR = 3
SX_PORT_MODULE_STATUS_PLUGGED_DISABLED = 4
try:
if os.environ["PLATFORM_API_UNIT_TESTING"] == "1":
# Unable to import SDK constants under unit test
# Define them here
SX_PORT_ADMIN_STATUS_UP = True
SX_PORT_ADMIN_STATUS_DOWN = False
except KeyError:
pass
# identifier value of xSFP module which is in the first byte of the EEPROM
# if the identifier value falls into SFP_TYPE_CODE_LIST the module is treated as a SFP module and parsed according to 8472
# for QSFP_TYPE_CODE_LIST the module is treated as a QSFP module and parsed according to 8436/8636
# Originally the type (SFP/QSFP) of each module is determined according to the SKU dictionary
# where the type of each FP port is defined. The content of EEPROM is parsed according to its type.
# However, sometimes the SFP module can be fit in an adapter and then pluged into a QSFP port.
# In this case the EEPROM content is in format of SFP but parsed as QSFP, causing failure.
# To resolve that issue the type field of the xSFP module is also fetched so that we can know exectly what type the
# module is. Currently only the following types are recognized as SFP/QSFP module.
# Meanwhile, if the a module's identifier value can't be recognized, it will be parsed according to the SKU dictionary.
# This is because in the future it's possible that some new identifier value which is not regonized but backward compatible
# with the current format and by doing so it can be parsed as much as possible.
SFP_TYPE_CODE_LIST = [
'03' # SFP/SFP+/SFP28
]
QSFP_TYPE_CODE_LIST = [
'0d', # QSFP+ or later
'11' # QSFP28 or later
]
QSFP_DD_TYPE_CODE_LIST = [
'18' # QSFP-DD Double Density 8X Pluggable Transceiver
]
RJ45_TYPE = "RJ45"
#variables for sdk
REGISTER_NUM = 1
DEVICE_ID = 1
SWITCH_ID = 0
PMAOS_ASE = 1
PMAOS_EE = 1
PMAOS_E = 2
PMAOS_RST = 0
PMAOS_ENABLE = 1
PMAOS_DISABLE = 2
PMMP_LPMODE_BIT = 8
MCION_TX_DISABLE_BIT = 1
#on page 0
#i2c address 0x50
MCIA_ADDR_TX_CHANNEL_DISABLE = 86
MCIA_ADDR_POWER_OVERRIDE = 93
#power set bit
MCIA_ADDR_POWER_OVERRIDE_PS_BIT = 1
#power override bit
MCIA_ADDR_POWER_OVERRIDE_POR_BIT = 0
#on page 0
#i2c address 0x51
MCIA_ADDR_TX_DISABLE = 110
MCIA_ADDR_TX_DISABLE_BIT = 6
PORT_TYPE_NVE = 8
PORT_TYPE_CPU = 4
PORT_TYPE_OFFSET = 28
PORT_TYPE_MASK = 0xF0000000
NVE_MASK = PORT_TYPE_MASK & (PORT_TYPE_NVE << PORT_TYPE_OFFSET)
CPU_MASK = PORT_TYPE_MASK & (PORT_TYPE_CPU << PORT_TYPE_OFFSET)
# parameters for SFP presence
SFP_STATUS_INSERTED = '1'
# SFP constants
SFP_PAGE_SIZE = 256 # page size of page0h
SFP_UPPER_PAGE_OFFSET = 128 # page size of other pages
# SFP sysfs path constants
SFP_PAGE0_PATH = '0/i2c-0x50/data'
SFP_A2H_PAGE0_PATH = '0/i2c-0x51/data'
SFP_SDK_MODULE_SYSFS_ROOT_TEMPLATE = '/sys/module/sx_core/asic0/module{}/'
SFP_EEPROM_ROOT_TEMPLATE = SFP_SDK_MODULE_SYSFS_ROOT_TEMPLATE + 'eeprom/pages'
SFP_SYSFS_STATUS = 'status'
SFP_SYSFS_STATUS_ERROR = 'statuserror'
SFP_SYSFS_PRESENT = 'present'
SFP_SYSFS_RESET = 'reset'
SFP_SYSFS_POWER_MODE = 'power_mode'
SFP_SYSFS_POWER_MODE_POLICY = 'power_mode_policy'
POWER_MODE_POLICY_HIGH = 1
POWER_MODE_POLICY_AUTO = 2
POWER_MODE_LOW = 1
# POWER_MODE_HIGH = 2 # not used
# SFP type constants
SFP_TYPE_CMIS = 'cmis'
SFP_TYPE_SFF8472 = 'sff8472'
SFP_TYPE_SFF8636 = 'sff8636'
# SFP stderr
SFP_EEPROM_NOT_AVAILABLE = 'Input/output error'
# SFP EEPROM limited bytes
limited_eeprom = {
SFP_TYPE_CMIS: {
'write': {
0: [26, (31, 36), (126, 127)],
16: [(0, 128)]
}
},
SFP_TYPE_SFF8472: {
'write': {
0: [110, (114, 115), 118, 127]
}
},
SFP_TYPE_SFF8636: {
'write': {
0: [(86, 88), 93, (98, 99), (100, 106), 127],
3: [(230, 241), (242, 251)]
}
}
}
# Global logger class instance
logger = Logger()
# SDK initializing stuff, called from chassis
def initialize_sdk_handle():
rc, sdk_handle = sx_api_open(None)
if (rc != SX_STATUS_SUCCESS):
logger.log_warning("Failed to open api handle, please check whether SDK is running.")
sdk_handle = None
return sdk_handle
def deinitialize_sdk_handle(sdk_handle):
if sdk_handle is not None:
rc = sx_api_close(sdk_handle)
if (rc != SX_STATUS_SUCCESS):
logger.log_warning("Failed to close api handle.")
return rc == SXD_STATUS_SUCCESS
else:
logger.log_warning("Sdk handle is none")
return False
class SdkHandleContext(object):
def __init__(self):
self.sdk_handle = None
def __enter__(self):
self.sdk_handle = initialize_sdk_handle()
return self.sdk_handle
def __exit__(self, exc_type, exc_val, exc_tb):
deinitialize_sdk_handle(self.sdk_handle)
class NvidiaSFPCommon(SfpOptoeBase):
def __init__(self, sfp_index):
super(NvidiaSFPCommon, self).__init__()
self.index = sfp_index + 1
self.sdk_index = sfp_index
@property
def sdk_handle(self):
if not SFP.shared_sdk_handle:
SFP.shared_sdk_handle = initialize_sdk_handle()
if not SFP.shared_sdk_handle:
logger.log_error('Failed to open SDK handle')
return SFP.shared_sdk_handle
@classmethod
def _get_module_info(self, sdk_index):
"""
Get oper state and error code of the SFP module
Returns:
The oper state and error code fetched from sysfs
"""
status_file_path = SFP_SDK_MODULE_SYSFS_ROOT_TEMPLATE.format(sdk_index) + SFP_SYSFS_STATUS
oper_state = utils.read_int_from_file(status_file_path)
status_error_file_path = SFP_SDK_MODULE_SYSFS_ROOT_TEMPLATE.format(sdk_index) + SFP_SYSFS_STATUS_ERROR
error_type = utils.read_int_from_file(status_error_file_path)
return oper_state, error_type
class SFP(NvidiaSFPCommon):
"""Platform-specific SFP class"""
shared_sdk_handle = None
SFP_MLNX_ERROR_DESCRIPTION_LONGRANGE_NON_MLNX_CABLE = 'Long range for non-Mellanox cable or module'
SFP_MLNX_ERROR_DESCRIPTION_ENFORCE_PART_NUMBER_LIST = 'Enforce part number list'
SFP_MLNX_ERROR_DESCRIPTION_PMD_TYPE_NOT_ENABLED = 'PMD type not enabled'
SFP_MLNX_ERROR_DESCRIPTION_PCIE_POWER_SLOT_EXCEEDED = 'PCIE system power slot exceeded'
SFP_MLNX_ERROR_DESCRIPTION_RESERVED = 'Reserved'
SFP_MLNX_ERROR_BIT_LONGRANGE_NON_MLNX_CABLE = 0x00010000
SFP_MLNX_ERROR_BIT_ENFORCE_PART_NUMBER_LIST = 0x00020000
SFP_MLNX_ERROR_BIT_PMD_TYPE_NOT_ENABLED = 0x00040000
SFP_MLNX_ERROR_BIT_PCIE_POWER_SLOT_EXCEEDED = 0x00080000
SFP_MLNX_ERROR_BIT_RESERVED = 0x80000000
def __init__(self, sfp_index, sfp_type=None, slot_id=0, linecard_port_count=0, lc_name=None):
super(SFP, self).__init__(sfp_index)
self._sfp_type = sfp_type
if slot_id == 0: # For non-modular chassis
from .thermal import initialize_sfp_thermal
self._thermal_list = initialize_sfp_thermal(sfp_index)
else: # For modular chassis
# (slot_id % MAX_LC_CONUNT - 1) * MAX_PORT_COUNT + (sfp_index + 1) * (MAX_PORT_COUNT / LC_PORT_COUNT)
max_linecard_count = DeviceDataManager.get_linecard_count()
max_linecard_port_count = DeviceDataManager.get_linecard_max_port_count()
self.index = (slot_id % max_linecard_count - 1) * max_linecard_port_count + sfp_index * (max_linecard_port_count / linecard_port_count) + 1
self.sdk_index = sfp_index
from .thermal import initialize_linecard_sfp_thermal
self._thermal_list = initialize_linecard_sfp_thermal(lc_name, slot_id, sfp_index)
self.slot_id = slot_id
self._sfp_type_str = None
def reinit(self):
"""
Re-initialize this SFP object when a new SFP inserted
:return:
"""
self._sfp_type_str = None
self.refresh_xcvr_api()
def get_presence(self):
"""
Retrieves the presence of the device
Returns:
bool: True if device is present, False if not
"""
eeprom_raw = self._read_eeprom(0, 1, log_on_error=False)
return eeprom_raw is not None
# read eeprom specfic bytes beginning from offset with size as num_bytes
def read_eeprom(self, offset, num_bytes):
"""
Read eeprom specfic bytes beginning from a random offset with size as num_bytes
Returns:
bytearray, if raw sequence of bytes are read correctly from the offset of size num_bytes
None, if the read_eeprom fails
"""
return self._read_eeprom(offset, num_bytes)
def _read_eeprom(self, offset, num_bytes, log_on_error=True):
"""Read eeprom specfic bytes beginning from a random offset with size as num_bytes
Args:
offset (int): read offset
num_bytes (int): read size
log_on_error (bool, optional): whether log error when exception occurs. Defaults to True.
Returns:
bytearray: the content of EEPROM
"""
_, page, page_offset = self._get_page_and_page_offset(offset)
if not page:
return None
try:
with open(page, mode='rb', buffering=0) as f:
f.seek(page_offset)
content = f.read(num_bytes)
if ctypes.get_errno() != 0:
raise IOError(f'errno = {os.strerror(ctypes.get_errno())}')
except (OSError, IOError) as e:
if log_on_error:
logger.log_warning(f'Failed to read sfp={self.sdk_index} EEPROM page={page}, page_offset={page_offset}, \
size={num_bytes}, offset={offset}, error = {e}')
return None
return bytearray(content)
# write eeprom specfic bytes beginning from offset with size as num_bytes
def write_eeprom(self, offset, num_bytes, write_buffer):
"""
write eeprom specfic bytes beginning from a random offset with size as num_bytes
and write_buffer as the required bytes
Returns:
Boolean, true if the write succeeded and false if it did not succeed.
Example:
mlxreg -d /dev/mst/mt52100_pciconf0 --reg_name MCIA --indexes slot_index=0,module=1,device_address=154,page_number=5,i2c_device_address=0x50,size=1,bank_number=0 --set dword[0]=0x01000000 -y
"""
if num_bytes != len(write_buffer):
logger.log_error("Error mismatch between buffer length and number of bytes to be written")
return False
page_num, page, page_offset = self._get_page_and_page_offset(offset)
if not page:
return False
try:
if self._is_write_protected(page_num, page_offset, num_bytes):
# write limited eeprom is not supported
raise IOError('write limited bytes')
with open(page, mode='r+b', buffering=0) as f:
f.seek(page_offset)
ret = f.write(write_buffer[0:num_bytes])
if ret != num_bytes:
raise IOError(f'write return code = {ret}')
if ctypes.get_errno() != 0:
raise IOError(f'errno = {os.strerror(ctypes.get_errno())}')
except (OSError, IOError) as e:
data = ''.join('{:02x}'.format(x) for x in write_buffer)
logger.log_error(f'Failed to write EEPROM data sfp={self.sdk_index} EEPROM page={page}, page_offset={page_offset}, size={num_bytes}, \
offset={offset}, data = {data}, error = {e}')
return False
return True
@classmethod
def mgmt_phy_mod_pwr_attr_get(cls, power_attr_type, sdk_handle, sdk_index, slot_id):
sx_mgmt_phy_mod_pwr_attr_p = new_sx_mgmt_phy_mod_pwr_attr_t_p()
sx_mgmt_phy_mod_pwr_attr = sx_mgmt_phy_mod_pwr_attr_t()
sx_mgmt_phy_mod_pwr_attr.power_attr_type = power_attr_type
sx_mgmt_phy_mod_pwr_attr_t_p_assign(sx_mgmt_phy_mod_pwr_attr_p, sx_mgmt_phy_mod_pwr_attr)
module_id_info = sx_mgmt_module_id_info_t()
module_id_info.slot_id = slot_id
module_id_info.module_id = sdk_index
try:
rc = sx_mgmt_phy_module_pwr_attr_get(sdk_handle, module_id_info, sx_mgmt_phy_mod_pwr_attr_p)
assert SX_STATUS_SUCCESS == rc, "sx_mgmt_phy_module_pwr_attr_get failed {}".format(rc)
sx_mgmt_phy_mod_pwr_attr = sx_mgmt_phy_mod_pwr_attr_t_p_value(sx_mgmt_phy_mod_pwr_attr_p)
pwr_mode_attr = sx_mgmt_phy_mod_pwr_attr.pwr_mode_attr
return pwr_mode_attr.admin_pwr_mode_e, pwr_mode_attr.oper_pwr_mode_e
finally:
delete_sx_mgmt_phy_mod_pwr_attr_t_p(sx_mgmt_phy_mod_pwr_attr_p)
def get_lpmode(self):
"""
Retrieves the lpmode (low power mode) status of this SFP
Returns:
A Boolean, True if lpmode is enabled, False if disabled
"""
if utils.is_host():
# To avoid performance issue,
# call class level method to avoid initialize the whole sonic platform API
get_lpmode_code = 'from sonic_platform import sfp;\n' \
'with sfp.SdkHandleContext() as sdk_handle:' \
'print(sfp.SFP._get_lpmode(sdk_handle, {}, {}))'.format(self.sdk_index, self.slot_id)
lpm_cmd = ["docker", "exec", "pmon", "python3", "-c", get_lpmode_code]
try:
output = subprocess.check_output(lpm_cmd, universal_newlines=True)
return 'True' in output
except subprocess.CalledProcessError as e:
print("Error! Unable to get LPM for {}, rc = {}, err msg: {}".format(self.sdk_index, e.returncode, e.output))
return False
else:
return self._get_lpmode(self.sdk_handle, self.sdk_index, self.slot_id)
@classmethod
def _get_lpmode(cls, sdk_handle, sdk_index, slot_id):
"""Class level method to get low power mode.
Args:
sdk_handle: SDK handle
sdk_index (integer): SDK port index
slot_id (integer): Slot ID
Returns:
[boolean]: True if low power mode is on else off
"""
_, oper_pwr_mode = cls.mgmt_phy_mod_pwr_attr_get(SX_MGMT_PHY_MOD_PWR_ATTR_PWR_MODE_E, sdk_handle, sdk_index, slot_id)
return oper_pwr_mode == SX_MGMT_PHY_MOD_PWR_MODE_LOW_E
def reset(self):
"""
Reset SFP and return all user module settings to their default state.
Returns:
A boolean, True if successful, False if not
refer plugins/sfpreset.py
"""
file_path = SFP_SDK_MODULE_SYSFS_ROOT_TEMPLATE.format(self.sdk_index) + SFP_SYSFS_RESET
return utils.write_file(file_path, '1')
@classmethod
def is_nve(cls, port):
return (port & NVE_MASK) != 0
@classmethod
def is_cpu(cls, port):
return (port & CPU_MASK) != 0
@classmethod
def _fetch_port_status(cls, sdk_handle, log_port):
oper_state_p = new_sx_port_oper_state_t_p()
admin_state_p = new_sx_port_admin_state_t_p()
module_state_p = new_sx_port_module_state_t_p()
rc = sx_api_port_state_get(sdk_handle, log_port, oper_state_p, admin_state_p, module_state_p)
assert rc == SXD_STATUS_SUCCESS, "sx_api_port_state_get failed, rc = %d" % rc
admin_state = sx_port_admin_state_t_p_value(admin_state_p)
oper_state = sx_port_oper_state_t_p_value(oper_state_p)
delete_sx_port_oper_state_t_p(oper_state_p)
delete_sx_port_admin_state_t_p(admin_state_p)
delete_sx_port_module_state_t_p(module_state_p)
return oper_state, admin_state
@classmethod
def is_port_admin_status_up(cls, sdk_handle, log_port):
_, admin_state = cls._fetch_port_status(sdk_handle, log_port);
return admin_state == SX_PORT_ADMIN_STATUS_UP
@classmethod
def set_port_admin_status_by_log_port(cls, sdk_handle, log_port, admin_status):
rc = sx_api_port_state_set(sdk_handle, log_port, admin_status)
if SX_STATUS_SUCCESS != rc:
logger.log_error("sx_api_port_state_set failed, rc = %d" % rc)
return SX_STATUS_SUCCESS == rc
@classmethod
def get_logical_ports(cls, sdk_handle, sdk_index, slot_id):
# Get all the ports related to the sfp, if port admin status is up, put it to list
port_cnt_p = new_uint32_t_p()
uint32_t_p_assign(port_cnt_p, 0)
rc = sx_api_port_device_get(sdk_handle, DEVICE_ID, SWITCH_ID, None, port_cnt_p)
assert rc == SX_STATUS_SUCCESS, "sx_api_port_device_get failed, rc = %d" % rc
port_cnt = uint32_t_p_value(port_cnt_p)
port_attributes_list = new_sx_port_attributes_t_arr(port_cnt)
rc = sx_api_port_device_get(sdk_handle, DEVICE_ID , SWITCH_ID, port_attributes_list, port_cnt_p)
assert rc == SX_STATUS_SUCCESS, "sx_api_port_device_get failed, rc = %d" % rc
port_cnt = uint32_t_p_value(port_cnt_p)
log_port_list = []
for i in range(0, port_cnt):
port_attributes = sx_port_attributes_t_arr_getitem(port_attributes_list, i)
if not cls.is_nve(int(port_attributes.log_port)) \
and not cls.is_cpu(int(port_attributes.log_port)) \
and port_attributes.port_mapping.module_port == sdk_index \
and port_attributes.port_mapping.slot == slot_id \
and cls.is_port_admin_status_up(sdk_handle, port_attributes.log_port):
log_port_list.append(port_attributes.log_port)
delete_sx_port_attributes_t_arr(port_attributes_list)
delete_uint32_t_p(port_cnt_p)
return log_port_list
@classmethod
def mgmt_phy_mod_pwr_attr_set(cls, sdk_handle, sdk_index, slot_id, power_attr_type, admin_pwr_mode):
result = False
sx_mgmt_phy_mod_pwr_attr = sx_mgmt_phy_mod_pwr_attr_t()
sx_mgmt_phy_mod_pwr_mode_attr = sx_mgmt_phy_mod_pwr_mode_attr_t()
sx_mgmt_phy_mod_pwr_attr.power_attr_type = power_attr_type
sx_mgmt_phy_mod_pwr_mode_attr.admin_pwr_mode_e = admin_pwr_mode
sx_mgmt_phy_mod_pwr_attr.pwr_mode_attr = sx_mgmt_phy_mod_pwr_mode_attr
sx_mgmt_phy_mod_pwr_attr_p = new_sx_mgmt_phy_mod_pwr_attr_t_p()
sx_mgmt_phy_mod_pwr_attr_t_p_assign(sx_mgmt_phy_mod_pwr_attr_p, sx_mgmt_phy_mod_pwr_attr)
module_id_info = sx_mgmt_module_id_info_t()
module_id_info.slot_id = slot_id
module_id_info.module_id = sdk_index
try:
rc = sx_mgmt_phy_module_pwr_attr_set(sdk_handle, SX_ACCESS_CMD_SET, module_id_info, sx_mgmt_phy_mod_pwr_attr_p)
if SX_STATUS_SUCCESS != rc:
logger.log_error("Error occurred when setting power mode for SFP module {}, slot {}, error code {}".format(sdk_index, slot_id, rc))
result = False
else:
result = True
finally:
delete_sx_mgmt_phy_mod_pwr_attr_t_p(sx_mgmt_phy_mod_pwr_attr_p)
return result
@classmethod
def _set_lpmode_raw(cls, sdk_handle, sdk_index, slot_id, ports, attr_type, power_mode):
result = False
# Check if the module already works in the same mode
admin_pwr_mode, oper_pwr_mode = cls.mgmt_phy_mod_pwr_attr_get(attr_type, sdk_handle, sdk_index, slot_id)
if (power_mode == SX_MGMT_PHY_MOD_PWR_MODE_LOW_E and oper_pwr_mode == SX_MGMT_PHY_MOD_PWR_MODE_LOW_E) \
or (power_mode == SX_MGMT_PHY_MOD_PWR_MODE_AUTO_E and admin_pwr_mode == SX_MGMT_PHY_MOD_PWR_MODE_AUTO_E):
return True
try:
# Bring the port down
for port in ports:
cls.set_port_admin_status_by_log_port(sdk_handle, port, SX_PORT_ADMIN_STATUS_DOWN)
# Set the desired power mode
result = cls.mgmt_phy_mod_pwr_attr_set(sdk_handle, sdk_index, slot_id, attr_type, power_mode)
finally:
# Bring the port up
for port in ports:
cls.set_port_admin_status_by_log_port(sdk_handle, port, SX_PORT_ADMIN_STATUS_UP)
return result
def set_lpmode(self, lpmode):
"""
Sets the lpmode (low power mode) of SFP
Args:
lpmode: A Boolean, True to enable lpmode, False to disable it
Note : lpmode can be overridden by set_power_override
Returns:
A boolean, True if lpmode is set successfully, False if not
"""
if utils.is_host():
# To avoid performance issue,
# call class level method to avoid initialize the whole sonic platform API
set_lpmode_code = 'from sonic_platform import sfp;\n' \
'with sfp.SdkHandleContext() as sdk_handle:' \
'print(sfp.SFP._set_lpmode({}, sdk_handle, {}, {}))' \
.format('True' if lpmode else 'False', self.sdk_index, self.slot_id)
lpm_cmd = ["docker", "exec", "pmon", "python3", "-c", set_lpmode_code]
# Set LPM
try:
output = subprocess.check_output(lpm_cmd, universal_newlines=True)
return 'True' in output
except subprocess.CalledProcessError as e:
print("Error! Unable to set LPM for {}, rc = {}, err msg: {}".format(self.sdk_index, e.returncode, e.output))
return False
else:
return self._set_lpmode(lpmode, self.sdk_handle, self.sdk_index, self.slot_id)
@classmethod
def _set_lpmode(cls, lpmode, sdk_handle, sdk_index, slot_id):
log_port_list = cls.get_logical_ports(sdk_handle, sdk_index, slot_id)
sdk_lpmode = SX_MGMT_PHY_MOD_PWR_MODE_LOW_E if lpmode else SX_MGMT_PHY_MOD_PWR_MODE_AUTO_E
cls._set_lpmode_raw(sdk_handle,
sdk_index,
slot_id,
log_port_list,
SX_MGMT_PHY_MOD_PWR_ATTR_PWR_MODE_E,
sdk_lpmode)
logger.log_info("{} low power mode for module {}, slot {}".format("Enabled" if lpmode else "Disabled", sdk_index, slot_id))
return True
def is_replaceable(self):
"""
Indicate whether this device is replaceable.
Returns:
bool: True if it is replaceable.
"""
return True
@classmethod
def _get_error_description_dict(cls):
return {0: cls.SFP_ERROR_DESCRIPTION_POWER_BUDGET_EXCEEDED,
1: cls.SFP_MLNX_ERROR_DESCRIPTION_LONGRANGE_NON_MLNX_CABLE,
2: cls.SFP_ERROR_DESCRIPTION_I2C_STUCK,
3: cls.SFP_ERROR_DESCRIPTION_BAD_EEPROM,
4: cls.SFP_MLNX_ERROR_DESCRIPTION_ENFORCE_PART_NUMBER_LIST,
5: cls.SFP_ERROR_DESCRIPTION_UNSUPPORTED_CABLE,
6: cls.SFP_ERROR_DESCRIPTION_HIGH_TEMP,
7: cls.SFP_ERROR_DESCRIPTION_BAD_CABLE,
8: cls.SFP_MLNX_ERROR_DESCRIPTION_PMD_TYPE_NOT_ENABLED,
12: cls.SFP_MLNX_ERROR_DESCRIPTION_PCIE_POWER_SLOT_EXCEEDED,
255: cls.SFP_MLNX_ERROR_DESCRIPTION_RESERVED
}
def get_error_description(self):
"""
Get error description
Args:
error_code: The error code returned by _get_module_info
Returns:
The error description
"""
oper_status, error_code = self._get_module_info(self.sdk_index)
if oper_status == SX_PORT_MODULE_STATUS_INITIALIZING:
error_description = self.SFP_STATUS_INITIALIZING
elif oper_status == SX_PORT_MODULE_STATUS_PLUGGED:
error_description = self.SFP_STATUS_OK
elif oper_status == SX_PORT_MODULE_STATUS_UNPLUGGED:
error_description = self.SFP_STATUS_UNPLUGGED
elif oper_status == SX_PORT_MODULE_STATUS_PLUGGED_DISABLED:
error_description = self.SFP_STATUS_DISABLED
elif oper_status == SX_PORT_MODULE_STATUS_PLUGGED_WITH_ERROR:
error_description_dict = self._get_error_description_dict()
if error_code in error_description_dict:
error_description = error_description_dict[error_code]
else:
error_description = "Unknown error ({})".format(error_code)
else:
error_description = "Unknow SFP module status ({})".format(oper_status)
return error_description
def _get_eeprom_path(self):
return SFP_EEPROM_ROOT_TEMPLATE.format(self.sdk_index)
def _get_page_and_page_offset(self, overall_offset):
"""Get EEPROM page and page offset according to overall offset
Args:
overall_offset (int): Overall read offset
Returns:
tuple: (<page_num>, <page_path>, <page_offset>)
"""
eeprom_path = self._get_eeprom_path()
if not os.path.exists(eeprom_path):
logger.log_error(f'EEPROM file path for sfp {self.sdk_index} does not exist')
return None, None, None
if overall_offset < SFP_PAGE_SIZE:
return 0, os.path.join(eeprom_path, SFP_PAGE0_PATH), overall_offset
if self._get_sfp_type_str(eeprom_path) == SFP_TYPE_SFF8472:
page1h_start = SFP_PAGE_SIZE * 2
if overall_offset < page1h_start:
return -1, os.path.join(eeprom_path, SFP_A2H_PAGE0_PATH), overall_offset - SFP_PAGE_SIZE
else:
page1h_start = SFP_PAGE_SIZE
page_num = (overall_offset - page1h_start) // SFP_UPPER_PAGE_OFFSET + 1
page = f'{page_num}/data'
offset = (overall_offset - page1h_start) % SFP_UPPER_PAGE_OFFSET
return page_num, os.path.join(eeprom_path, page), offset
def _get_sfp_type_str(self, eeprom_path):
"""Get SFP type by reading first byte of EEPROM
Args:
eeprom_path (str): EEPROM path
Returns:
str: SFP type in string
"""
if self._sfp_type_str is None:
page = os.path.join(eeprom_path, SFP_PAGE0_PATH)
try:
with open(page, mode='rb', buffering=0) as f:
id_byte_raw = bytearray(f.read(1))
id = id_byte_raw[0]
if id == 0x18 or id == 0x19 or id == 0x1e:
self._sfp_type_str = SFP_TYPE_CMIS
elif id == 0x11 or id == 0x0D:
# in sonic-platform-common, 0x0D is treated as sff8436,
# but it shared the same implementation on Nvidia platforms,
# so, we treat it as sff8636 here.
self._sfp_type_str = SFP_TYPE_SFF8636
elif id == 0x03:
self._sfp_type_str = SFP_TYPE_SFF8472
else:
logger.log_error(f'Unsupported sfp type {id}')
except (OSError, IOError) as e:
# SFP_EEPROM_NOT_AVAILABLE usually indicates SFP is not present, no need
# print such error information to log
if SFP_EEPROM_NOT_AVAILABLE not in str(e):
logger.log_error(f'Failed to get SFP type, index={self.sdk_index}, error={e}')
return None
return self._sfp_type_str
def _is_write_protected(self, page, page_offset, num_bytes):
"""Check if the EEPROM read/write operation hit limitation bytes
Args:
page (str): EEPROM page path
page_offset (int): EEPROM page offset
num_bytes (int): read/write size
Returns:
bool: True if the limited bytes is hit
"""
eeprom_path = self._get_eeprom_path()
limited_data = limited_eeprom.get(self._get_sfp_type_str(eeprom_path))
if not limited_data:
return False
access_type = 'write'
limited_data = limited_data.get(access_type)
if not limited_data:
return False
limited_ranges = limited_data.get(page)
if not limited_ranges:
return False
access_begin = page_offset
access_end = page_offset + num_bytes - 1
for limited_range in limited_ranges:
if isinstance(limited_range, int):
if access_begin <= limited_range <= access_end:
return True
else: # tuple
if not (access_end < limited_range[0] or access_begin > limited_range[1]):
return True
return False
def get_rx_los(self):
"""Accessing rx los is not supproted, return all False
Returns:
list: [False] * channels
"""
api = self.get_xcvr_api()
return [False] * api.NUM_CHANNELS if api else None
def get_tx_fault(self):
"""Accessing tx fault is not supproted, return all False
Returns:
list: [False] * channels
"""
api = self.get_xcvr_api()
return [False] * api.NUM_CHANNELS if api else None
def get_xcvr_api(self):
"""
Retrieves the XcvrApi associated with this SFP
Returns:
An object derived from XcvrApi that corresponds to the SFP
"""
if self._xcvr_api is None:
self.refresh_xcvr_api()
if self._xcvr_api is not None:
self._xcvr_api.get_rx_los = self.get_rx_los
self._xcvr_api.get_tx_fault = self.get_tx_fault
return self._xcvr_api
class RJ45Port(NvidiaSFPCommon):
"""class derived from SFP, representing RJ45 ports"""
def __init__(self, sfp_index):
super(RJ45Port, self).__init__(sfp_index)
self.sfp_type = RJ45_TYPE
def get_presence(self):
"""
Retrieves the presence of the device
For RJ45 ports, it always return True
Returns:
bool: True if device is present, False if not
"""
file_path = SFP_SDK_MODULE_SYSFS_ROOT_TEMPLATE.format(self.sdk_index) + SFP_SYSFS_PRESENT
present = utils.read_int_from_file(file_path)
return present == 1
def get_transceiver_info(self):
"""
Retrieves transceiver info of this port.
For RJ45, all fields are N/A
Returns:
A dict which contains following keys/values :
================================================================================
keys |Value Format |Information
---------------------------|---------------|----------------------------
type |1*255VCHAR |type of SFP
vendor_rev |1*255VCHAR |vendor revision of SFP
serial |1*255VCHAR |serial number of the SFP
manufacturer |1*255VCHAR |SFP vendor name
model |1*255VCHAR |SFP model name
connector |1*255VCHAR |connector information
encoding |1*255VCHAR |encoding information
ext_identifier |1*255VCHAR |extend identifier
ext_rateselect_compliance |1*255VCHAR |extended rateSelect compliance
cable_length |INT |cable length in m
mominal_bit_rate |INT |nominal bit rate by 100Mbs
specification_compliance |1*255VCHAR |specification compliance
vendor_date |1*255VCHAR |vendor date
vendor_oui |1*255VCHAR |vendor OUI
application_advertisement |1*255VCHAR |supported applications advertisement
================================================================================
"""
transceiver_info_keys = ['manufacturer',
'model',
'vendor_rev',
'serial',
'vendor_oui',
'vendor_date',
'connector',
'encoding',
'ext_identifier',
'ext_rateselect_compliance',
'cable_type',
'cable_length',
'specification_compliance',
'nominal_bit_rate',
'application_advertisement']
transceiver_info_dict = dict.fromkeys(transceiver_info_keys, 'N/A')
transceiver_info_dict['type'] = self.sfp_type
return transceiver_info_dict
def get_lpmode(self):
"""
Retrieves the lpmode (low power mode) status of this SFP
Returns:
A Boolean, True if lpmode is enabled, False if disabled
"""
return False
def reset(self):
"""
Reset SFP and return all user module settings to their default state.
Returns:
A boolean, True if successful, False if not
refer plugins/sfpreset.py
"""
return False
def set_lpmode(self, lpmode):
"""
Sets the lpmode (low power mode) of SFP
Args:
lpmode: A Boolean, True to enable lpmode, False to disable it
Note : lpmode can be overridden by set_power_override
Returns:
A boolean, True if lpmode is set successfully, False if not
"""
return False
def get_error_description(self):
"""
Get error description
Args:
error_code: Always false on SN2201
Returns:
The error description
"""
return False
def get_transceiver_bulk_status(self):
"""
Retrieves transceiver bulk status of this SFP
Returns:
A dict which contains following keys/values :
========================================================================
keys |Value Format |Information
---------------------------|---------------|----------------------------
RX LOS |BOOLEAN |RX lost-of-signal status,
| |True if has RX los, False if not.
TX FAULT |BOOLEAN |TX fault status,
| |True if has TX fault, False if not.
Reset status |BOOLEAN |reset status,
| |True if SFP in reset, False if not.
LP mode |BOOLEAN |low power mode status,
| |True in lp mode, False if not.
TX disable |BOOLEAN |TX disable status,
| |True TX disabled, False if not.
TX disabled channel |HEX |disabled TX channles in hex,
| |bits 0 to 3 represent channel 0
| |to channel 3.
Temperature |INT |module temperature in Celsius
Voltage |INT |supply voltage in mV
TX bias |INT |TX Bias Current in mA
RX power |INT |received optical power in mW
TX power |INT |TX output power in mW
========================================================================
"""
transceiver_dom_info_dict = {}
dom_info_dict_keys = ['temperature', 'voltage',
'rx1power', 'rx2power',
'rx3power', 'rx4power',
'rx5power', 'rx6power',
'rx7power', 'rx8power',
'tx1bias', 'tx2bias',
'tx3bias', 'tx4bias',
'tx5bias', 'tx6bias',
'tx7bias', 'tx8bias',
'tx1power', 'tx2power',
'tx3power', 'tx4power',
'tx5power', 'tx6power',
'tx7power', 'tx8power'
]
transceiver_dom_info_dict = dict.fromkeys(dom_info_dict_keys, 'N/A')
return transceiver_dom_info_dict
def get_transceiver_threshold_info(self):
"""
Retrieves transceiver threshold info of this SFP
Returns:
A dict which contains following keys/values :
========================================================================
keys |Value Format |Information
---------------------------|---------------|----------------------------
temphighalarm |FLOAT |High Alarm Threshold value of temperature in Celsius.
templowalarm |FLOAT |Low Alarm Threshold value of temperature in Celsius.
temphighwarning |FLOAT |High Warning Threshold value of temperature in Celsius.
templowwarning |FLOAT |Low Warning Threshold value of temperature in Celsius.
vcchighalarm |FLOAT |High Alarm Threshold value of supply voltage in mV.
vcclowalarm |FLOAT |Low Alarm Threshold value of supply voltage in mV.
vcchighwarning |FLOAT |High Warning Threshold value of supply voltage in mV.
vcclowwarning |FLOAT |Low Warning Threshold value of supply voltage in mV.
rxpowerhighalarm |FLOAT |High Alarm Threshold value of received power in dBm.
rxpowerlowalarm |FLOAT |Low Alarm Threshold value of received power in dBm.
rxpowerhighwarning |FLOAT |High Warning Threshold value of received power in dBm.
rxpowerlowwarning |FLOAT |Low Warning Threshold value of received power in dBm.
txpowerhighalarm |FLOAT |High Alarm Threshold value of transmit power in dBm.
txpowerlowalarm |FLOAT |Low Alarm Threshold value of transmit power in dBm.
txpowerhighwarning |FLOAT |High Warning Threshold value of transmit power in dBm.
txpowerlowwarning |FLOAT |Low Warning Threshold value of transmit power in dBm.
txbiashighalarm |FLOAT |High Alarm Threshold value of tx Bias Current in mA.
txbiaslowalarm |FLOAT |Low Alarm Threshold value of tx Bias Current in mA.
txbiashighwarning |FLOAT |High Warning Threshold value of tx Bias Current in mA.
txbiaslowwarning |FLOAT |Low Warning Threshold value of tx Bias Current in mA.
========================================================================
"""
transceiver_dom_threshold_info_dict = {}
dom_info_dict_keys = ['temphighalarm', 'temphighwarning',
'templowalarm', 'templowwarning',
'vcchighalarm', 'vcchighwarning',
'vcclowalarm', 'vcclowwarning',
'rxpowerhighalarm', 'rxpowerhighwarning',
'rxpowerlowalarm', 'rxpowerlowwarning',
'txpowerhighalarm', 'txpowerhighwarning',
'txpowerlowalarm', 'txpowerlowwarning',
'txbiashighalarm', 'txbiashighwarning',
'txbiaslowalarm', 'txbiaslowwarning'
]
transceiver_dom_threshold_info_dict = dict.fromkeys(dom_info_dict_keys, 'N/A')
return transceiver_dom_threshold_info_dict
def get_reset_status(self):
"""
Retrieves the reset status of SFP
Returns:
A Boolean, True if reset enabled, False if disabled
for QSFP, originally I would like to make use of Initialization complete flag bit
which is at Page a0 offset 6 bit 0 to test whether reset is complete.
However as unit testing was carried out I find this approach may fail because:
1. we make use of ethtool to read data on I2C bus rather than to read directly
2. ethtool is unable to access I2C during QSFP module being reset
In other words, whenever the flag is able to be retrived, the value is always be 1
As a result, it doesn't make sense to retrieve that flag. Just treat successfully
retrieving data as "data ready".
for SFP it seems that there is not flag indicating whether reset succeed. However,
we can also do it in the way for QSFP.
"""
return False
def read_eeprom(self, offset, num_bytes):
return None
def reinit(self):
"""
Nothing to do for RJ45. Just provide it to avoid exception
:return:
"""
return
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