9590339d69
- Why I did it Remove TODO comments which are no longer needed - How I did it Remove TODO comments which are no longer needed - How to verify it Only comment change
250 lines
8.2 KiB
Python
250 lines
8.2 KiB
Python
#
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# Copyright (c) 2021 NVIDIA CORPORATION & AFFILIATES.
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# Apache-2.0
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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import redis
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import threading
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from sonic_platform_base.module_base import ModuleBase
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from sonic_py_common.logger import Logger
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from . import utils
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from .device_data import DeviceDataManager
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from .vpd_parser import VpdParser
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# Global logger class instance
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logger = Logger()
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class Module(ModuleBase):
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STATE_ACTIVATED = 1
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STATE_DEACTIVATED = 0
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STATE_DB = 6
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STATE_MODULAR_CHASSIS_SLOT_TABLE = 'MODULAR_CHASSIS_SLOT|{}'
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FIELD_SEQ_NO = 'seq_no'
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redis_client = redis.Redis(db = STATE_DB)
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def __init__(self, slot_id):
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super(Module, self).__init__()
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self.slot_id = slot_id
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self.seq_no = 0
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self.current_state = Module.STATE_DEACTIVATED
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self.lock = threading.Lock()
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self.sfp_initialized_count = 0
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self.sfp_count = 0
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self.vpd_parser = VpdParser('/run/hw-management/lc{}/eeprom/vpd_parsed')
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def get_name(self):
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return 'LINE-CARD{}'.format(self.slot_id)
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def get_model(self):
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"""
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Retrieves the model number (or part number) of the device
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Returns:
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string: Model/part number of device
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"""
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return self.vpd_parser.get_model()
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def get_serial(self):
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"""
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Retrieves the serial number of the device
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Returns:
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string: Serial number of device
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"""
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return self.vpd_parser.get_serial()
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def get_revision(self):
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"""
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Retrieves the hardware revision of the device
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Returns:
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string: Revision value of device
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"""
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return self.vpd_parser.get_revision()
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def get_type(self):
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return ModuleBase.MODULE_TYPE_LINE
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def get_slot(self):
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return self.slot_id
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def get_presence(self):
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return utils.read_int_from_file('/run/hw-management/system/lc{}_present'.format(self.slot_id)) == 1
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def get_position_in_parent(self):
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return self.slot_id
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def is_replaceable(self):
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return True
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def get_oper_status(self):
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if utils.read_int_from_file('/run/hw-management/system/lc{}_active'.format(self.slot_id)) == 1:
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return ModuleBase.MODULE_STATUS_ONLINE
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elif utils.read_int_from_file('/run/hw-management/system/lc{}_present'.format(self.slot_id)) == 1:
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return ModuleBase.MODULE_STATUS_PRESENT
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elif utils.read_int_from_file('/run/hw-management/system/lc{}_present'.format(self.slot_id)) == 0:
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return ModuleBase.MODULE_STATUS_EMPTY
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else:
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return ModuleBase.MODULE_STATUS_FAULT
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def _check_state(self):
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"""Check Module status change:
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1. If status sysfs file value has been changed
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2. If sequence NO has been changed which means line card has been removed and inserted again.
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"""
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seq_no = self._get_seq_no()
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state = utils.read_int_from_file('/run/hw-management/system/lc{}_powered'.format(self.slot_id), log_func=None)
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if state != self.current_state:
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self._re_init()
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elif seq_no != self.seq_no:
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if state == Module.STATE_ACTIVATED: # LC has been replaced, need re-initialize
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self._re_init()
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self.current_state = state
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self.seq_no = seq_no
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def _get_seq_no(self):
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try:
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seq_no = Module.redis_client.hget(Module.STATE_MODULAR_CHASSIS_SLOT_TABLE.format(self.slot_id), Module.FIELD_SEQ_NO)
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seq_no = seq_no.decode().strip()
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except Exception as e:
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seq_no = 0
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return seq_no
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def _re_init(self):
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self._thermal_list = []
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self._sfp_list = []
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self._sfp_count = 0
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##############################################
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# THERMAL methods
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##############################################
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def initialize_thermals(self):
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self._check_state()
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if self.current_state == Module.STATE_ACTIVATED and not self._thermal_list:
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from .thermal import initialize_linecard_thermals
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self._thermal_list = initialize_linecard_thermals(self.get_name(), self.slot_id)
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def get_num_thermals(self):
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"""
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Retrieves the number of thermals available on this module
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Returns:
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An integer, the number of thermals available on this module
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"""
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return DeviceDataManager.get_gearbox_count('/run/hw-management/lc{}/config'.format(self.slot_id))
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def get_all_thermals(self):
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"""
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Retrieves all thermals available on this module
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Returns:
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A list of objects derived from ThermalBase representing all thermals
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available on this module
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"""
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with self.lock:
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self.initialize_thermals()
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return self._thermal_list
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def get_thermal(self, index):
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"""
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Retrieves thermal unit represented by (0-based) index <index>
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Args:
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index: An integer, the index (0-based) of the thermal to
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retrieve
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Returns:
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An object dervied from ThermalBase representing the specified thermal
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"""
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with self.lock:
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self.initialize_thermals()
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return super(Module, self).get_thermal(index)
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##############################################
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# SFP methods
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##############################################
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def _create_sfp_object(self, index):
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from .sfp import SFP
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return SFP(index, slot_id=self.slot_id, linecard_port_count=self.sfp_count, lc_name=self.get_name())
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def initialize_single_sfp(self, index):
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self._check_state()
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if self.current_state == Module.STATE_ACTIVATED:
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sfp_count = self.get_num_sfps()
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if index < sfp_count:
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if not self._sfp_list:
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self._sfp_list = [None] * sfp_count
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if not self._sfp_list[index]:
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self._sfp_list[index] = self._create_sfp_object(index)
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self.sfp_initialized_count += 1
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def initialize_sfps(self):
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self._check_state()
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if self.current_state == Module.STATE_ACTIVATED:
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if not self._sfp_list:
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sfp_count = self.get_num_sfps()
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for index in range(sfp_count):
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self._sfp_list.append(self._create_sfp_object(index))
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self.sfp_initialized_count = sfp_count
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elif self.sfp_initialized_count != len(self._sfp_list):
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for index in range(len(self._sfp_list)):
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if self._sfp_list[index] is None:
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self._sfp_list[index] = self._create_sfp_object(index)
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self.sfp_initialized_count = len(self._sfp_list)
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def get_num_sfps(self):
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"""
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Retrieves the number of sfps available on this module
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Returns:
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An integer, the number of sfps available on this module
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"""
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if self.sfp_count == 0:
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self.sfp_count = DeviceDataManager.get_linecard_sfp_count(self.slot_id)
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return self.sfp_count
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def get_all_sfps(self):
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"""
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Retrieves all sfps available on this module
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Returns:
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A list of objects derived from PsuBase representing all sfps
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available on this module
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"""
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with self.lock:
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self.initialize_sfps()
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return self._sfp_list
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def get_sfp(self, index):
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"""
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Retrieves sfp represented by (0-based) index <index>
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Args:
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index: An integer, the index (0-based) of the sfp to retrieve
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Returns:
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An object dervied from SfpBase representing the specified sfp
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"""
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with self.lock:
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self.initialize_single_sfp(index)
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return super(Module, self).get_sfp(index)
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