#!/usr/bin/env python ############################################################################# # Mellanox # # Module contains an implementation of SONiC Platform Base API and # provides the Chassis information which are available in the platform # ############################################################################# try: from sonic_platform_base.chassis_base import ChassisBase from sonic_platform_base.component_base import ComponentBase from sonic_device_util import get_machine_info from sonic_daemon_base.daemon_base import Logger from os import listdir from os.path import isfile, join from glob import glob import sys import io import re import subprocess import syslog except ImportError as e: raise ImportError (str(e) + "- required module not found") MAX_SELECT_DELAY = 3600 MLNX_NUM_PSU = 2 GET_HWSKU_CMD = "sonic-cfggen -d -v DEVICE_METADATA.localhost.hwsku" GET_PLATFORM_CMD = "sonic-cfggen -d -v DEVICE_METADATA.localhost.platform" EEPROM_CACHE_ROOT = '/var/cache/sonic/decode-syseeprom' EEPROM_CACHE_FILE = 'syseeprom_cache' HWMGMT_SYSTEM_ROOT = '/var/run/hw-management/system/' MST_DEVICE_NAME_PATTERN = '/dev/mst/mt[0-9]*_pciconf0' MST_DEVICE_RE_PATTERN = '/dev/mst/mt([0-9]*)_pciconf0' SPECTRUM1_CHIP_ID = '52100' #reboot cause related definitions REBOOT_CAUSE_ROOT = HWMGMT_SYSTEM_ROOT REBOOT_CAUSE_FILE_LENGTH = 1 # Global logger class instance logger = Logger() # System LED system fs definitions for 201911 branch only SYSTEM_STATUS_LED_GREEN_FILE = '/run/hw-management/led/led_status_green' LED_ON = '1' # magic code defnition for port number, qsfp port position of each Platform # port_position_tuple = (PORT_START, QSFP_PORT_START, PORT_END, PORT_IN_BLOCK, EEPROM_OFFSET) platform_dict_port = {'x86_64-mlnx_msn2010-r0': 3, 'x86_64-mlnx_msn2100-r0': 1, 'x86_64-mlnx_msn2410-r0': 2, 'x86_64-mlnx_msn2700-r0': 0, 'x86_64-mlnx_lssn2700':0, 'x86_64-mlnx_msn2740-r0': 0, 'x86_64-mlnx_msn3420-r0':5, 'x86_64-mlnx_msn3700-r0': 0, 'x86_64-mlnx_msn3700c-r0': 0, 'x86_64-mlnx_msn3800-r0': 4, 'x86_64-mlnx_msn4600c-r0':4, 'x86_64-mlnx_msn4700-r0': 0} port_position_tuple_list = [(0, 0, 31, 32, 1), (0, 0, 15, 16, 1), (0, 48, 55, 56, 1), (0, 18, 21, 22, 1), (0, 0, 63, 64, 1), (0, 48, 59, 60, 1)] class Chassis(ChassisBase): """Platform-specific Chassis class""" def __init__(self): super(Chassis, self).__init__() # Initialize SKU name and Platform name self.sku_name = self._get_sku_name() self.platform_name = self._get_platform_name() mi = get_machine_info() if mi is not None: self.name = mi['onie_platform'] else: self.name = self.sku_name # move the initialization of each components to their dedicated initializer # which will be called from platform self.sfp_module_initialized = False self.sfp_event_initialized = False self.reboot_cause_initialized = False self.initialize_system_led() logger.log_info("Chassis loaded successfully") def __del__(self): if self.sfp_event_initialized: self.sfp_event.deinitialize() def initialize_psu(self): from sonic_platform.psu import Psu # Initialize PSU list self.psu_module = Psu for index in range(MLNX_NUM_PSU): psu = Psu(index, self.platform_name) self._psu_list.append(psu) def initialize_fan(self): from sonic_platform.fan import Fan from sonic_platform.fan import FAN_PATH self.fan_module = Fan self.fan_path = FAN_PATH # Initialize FAN list multi_rotor_in_drawer = False num_of_fan, num_of_drawer = self._extract_num_of_fans_and_fan_drawers() multi_rotor_in_drawer = num_of_fan > num_of_drawer # Fan's direction isn't supported on spectrum 1 devices for now mst_dev_list = glob(MST_DEVICE_NAME_PATTERN) if not mst_dev_list: raise RuntimeError("Can't get chip type due to {} not found".format(MST_DEVICE_NAME_PATTERN)) m = re.search(MST_DEVICE_RE_PATTERN, mst_dev_list[0]) if m.group(1) == SPECTRUM1_CHIP_ID: has_fan_dir = False else: has_fan_dir = True for index in range(num_of_fan): if multi_rotor_in_drawer: fan = Fan(has_fan_dir, index, index/2, False, self.platform_name) else: fan = Fan(has_fan_dir, index, index, False, self.platform_name) self._fan_list.append(fan) def initialize_sfp(self): from sonic_platform.sfp import SFP self.sfp_module = SFP # Initialize SFP list port_position_tuple = self._get_port_position_tuple_by_platform_name() self.PORT_START = port_position_tuple[0] self.QSFP_PORT_START = port_position_tuple[1] self.PORT_END = port_position_tuple[2] self.PORTS_IN_BLOCK = port_position_tuple[3] for index in range(self.PORT_START, self.PORT_END + 1): if index in range(self.QSFP_PORT_START, self.PORTS_IN_BLOCK + 1): sfp_module = SFP(index, 'QSFP') else: sfp_module = SFP(index, 'SFP') self._sfp_list.append(sfp_module) self.sfp_module_initialized = True def initialize_thermals(self): from sonic_platform.thermal import initialize_thermals # Initialize thermals initialize_thermals(self.platform_name, self._thermal_list, self._psu_list) def initialize_eeprom(self): from eeprom import Eeprom # Initialize EEPROM self._eeprom = Eeprom() def initialize_components(self): # Initialize component list from sonic_platform.component import ComponentONIE, ComponentSSD, ComponentBIOS, ComponentCPLD self._component_list.append(ComponentONIE()) self._component_list.append(ComponentSSD()) self._component_list.append(ComponentBIOS()) self._component_list.extend(ComponentCPLD.get_component_list()) def get_name(self): """ Retrieves the name of the device Returns: string: The name of the device """ return self.name ############################################## # SFP methods ############################################## def get_num_sfps(self): """ Retrieves the number of sfps available on this chassis Returns: An integer, the number of sfps available on this chassis """ if not self.sfp_module_initialized: self.initialize_sfp() return len(self._sfp_list) def get_all_sfps(self): """ Retrieves all sfps available on this chassis Returns: A list of objects derived from SfpBase representing all sfps available on this chassis """ if not self.sfp_module_initialized: self.initialize_sfp() return self._sfp_list def get_sfp(self, index): """ Retrieves sfp represented by (1-based) index Args: index: An integer, the index (1-based) of the sfp to retrieve. The index should be the sequence of a physical port in a chassis, starting from 1. For example, 1 for Ethernet0, 2 for Ethernet4 and so on. Returns: An object dervied from SfpBase representing the specified sfp """ if not self.sfp_module_initialized: self.initialize_sfp() sfp = None index -= 1 try: sfp = self._sfp_list[index] except IndexError: sys.stderr.write("SFP index {} out of range (0-{})\n".format( index, len(self._sfp_list)-1)) return sfp def _extract_num_of_fans_and_fan_drawers(self): num_of_fan = 0 num_of_drawer = 0 for f in listdir(self.fan_path): if isfile(join(self.fan_path, f)): match_obj = re.match('fan(\d+)_speed_get', f) if match_obj != None: if int(match_obj.group(1)) > num_of_fan: num_of_fan = int(match_obj.group(1)) else: match_obj = re.match('fan(\d+)_status', f) if match_obj != None and int(match_obj.group(1)) > num_of_drawer: num_of_drawer = int(match_obj.group(1)) return num_of_fan, num_of_drawer def _get_sku_name(self): p = subprocess.Popen(GET_HWSKU_CMD, shell=True, stdout=subprocess.PIPE) out, err = p.communicate() return out.rstrip('\n') def _get_platform_name(self): p = subprocess.Popen(GET_PLATFORM_CMD, shell=True, stdout=subprocess.PIPE) out, err = p.communicate() return out.rstrip('\n') def _get_port_position_tuple_by_platform_name(self): position_tuple = port_position_tuple_list[platform_dict_port[self.platform_name]] return position_tuple def get_watchdog(self): """ Retrieves hardware watchdog device on this chassis Returns: An object derived from WatchdogBase representing the hardware watchdog device Note: We overload this method to ensure that watchdog is only initialized when it is referenced. Currently, only one daemon can open the watchdog. To initialize watchdog in the constructor causes multiple daemon try opening watchdog when loading and constructing a chassis object and fail. By doing so we can eliminate that risk. """ try: if self._watchdog is None: from sonic_platform.watchdog import get_watchdog self._watchdog = get_watchdog() except Exception as e: logger.log_info("Fail to load watchdog due to {}".format(repr(e))) return self._watchdog def get_base_mac(self): """ Retrieves the base MAC address for the chassis Returns: A string containing the MAC address in the format 'XX:XX:XX:XX:XX:XX' """ return self._eeprom.get_base_mac() def get_serial_number(self): """ Retrieves the hardware serial number for the chassis Returns: A string containing the hardware serial number for this chassis. """ return self._eeprom.get_serial_number() def get_system_eeprom_info(self): """ Retrieves the full content of system EEPROM information for the chassis Returns: A dictionary where keys are the type code defined in OCP ONIE TlvInfo EEPROM format and values are their corresponding values. """ return self._eeprom.get_system_eeprom_info() def _read_generic_file(self, filename, len): """ Read a generic file, returns the contents of the file """ result = '' try: fileobj = io.open(filename) result = fileobj.read(len) fileobj.close() return result except Exception as e: logger.log_info("Fail to read file {} due to {}".format(filename, repr(e))) return '0' def _verify_reboot_cause(self, filename): ''' Open and read the reboot cause file in /var/run/hwmanagement/system (which is defined as REBOOT_CAUSE_ROOT) If a reboot cause file doesn't exists, returns '0'. ''' return bool(int(self._read_generic_file(join(REBOOT_CAUSE_ROOT, filename), REBOOT_CAUSE_FILE_LENGTH).rstrip('\n'))) def initialize_reboot_cause(self): self.reboot_major_cause_dict = { 'reset_main_pwr_fail' : self.REBOOT_CAUSE_POWER_LOSS, 'reset_aux_pwr_or_ref' : self.REBOOT_CAUSE_POWER_LOSS, 'reset_asic_thermal' : self.REBOOT_CAUSE_THERMAL_OVERLOAD_ASIC, 'reset_hotswap_or_wd' : self.REBOOT_CAUSE_WATCHDOG, 'reset_swb_wd' : self.REBOOT_CAUSE_WATCHDOG, 'reset_sff_wd' : self.REBOOT_CAUSE_WATCHDOG } self.reboot_minor_cause_dict = { 'reset_fw_reset' : "Reset by ASIC firmware", 'reset_long_pb' : "Reset by long press on power button", 'reset_short_pb' : "Reset by short press on power button", 'reset_comex_thermal' : "ComEx thermal shutdown", 'reset_comex_pwr_fail' : "ComEx power fail", 'reset_comex_wd' : "Reset requested from ComEx", 'reset_from_asic' : "Reset requested from ASIC", 'reset_reload_bios' : "Reset caused by BIOS reload", 'reset_hotswap_or_halt' : "Reset caused by hotswap or halt", 'reset_from_comex' : "Reset from ComEx", 'reset_voltmon_upgrade_fail': "Reset due to voltage monitor devices upgrade failure" } self.reboot_by_software = 'reset_sw_reset' self.reboot_cause_initialized = True def get_reboot_cause(self): """ Retrieves the cause of the previous reboot Returns: A tuple (string, string) where the first element is a string containing the cause of the previous reboot. This string must be one of the predefined strings in this class. If the first string is "REBOOT_CAUSE_HARDWARE_OTHER", the second string can be used to pass a description of the reboot cause. """ #read reboot causes files in the following order if not self.reboot_cause_initialized: self.initialize_reboot_cause() for reset_file, reset_cause in self.reboot_major_cause_dict.iteritems(): if self._verify_reboot_cause(reset_file): return reset_cause, '' for reset_file, reset_cause in self.reboot_minor_cause_dict.iteritems(): if self._verify_reboot_cause(reset_file): return self.REBOOT_CAUSE_HARDWARE_OTHER, reset_cause if self._verify_reboot_cause(self.reboot_by_software): logger.log_info("Hardware reboot cause: the system was rebooted due to software requesting") else: logger.log_info("Hardware reboot cause: no hardware reboot cause found") return self.REBOOT_CAUSE_NON_HARDWARE, '' def _show_capabilities(self): """ This function is for debug purpose Some features require a xSFP module to support some capabilities but it's unrealistic to check those modules one by one. So this function is introduce to show some capabilities of all xSFP modules mounted on the device. """ for s in self._sfp_list: try: print "index {} tx disable {} dom {} calibration {} temp {} volt {} power (tx {} rx {})".format(s.index, s.dom_tx_disable_supported, s.dom_supported, s.calibration, s.dom_temp_supported, s.dom_volt_supported, s.dom_rx_power_supported, s.dom_tx_power_supported ) except: print "fail to retrieve capabilities for module index {}".format(s.index) def get_change_event(self, timeout=0): """ Returns a nested dictionary containing all devices which have experienced a change at chassis level Args: timeout: Timeout in milliseconds (optional). If timeout == 0, this method will block until a change is detected. Returns: (bool, dict): - True if call successful, False if not; - A nested dictionary where key is a device type, value is a dictionary with key:value pairs in the format of {'device_id':'device_event'}, where device_id is the device ID for this device and device_event, status='1' represents device inserted, status='0' represents device removed. Ex. {'fan':{'0':'0', '2':'1'}, 'sfp':{'11':'0'}} indicates that fan 0 has been removed, fan 2 has been inserted and sfp 11 has been removed. """ # Initialize SFP event first if not self.sfp_event_initialized: from sonic_platform.sfp_event import sfp_event self.sfp_event = sfp_event() self.sfp_event.initialize() self.MAX_SELECT_EVENT_RETURNED = self.PORT_END self.sfp_event_initialized = True wait_for_ever = (timeout == 0) port_dict = {} if wait_for_ever: timeout = MAX_SELECT_DELAY while True: status = self.sfp_event.check_sfp_status(port_dict, timeout) if bool(port_dict): break else: status = self.sfp_event.check_sfp_status(port_dict, timeout) if status: return True, {'sfp':port_dict} else: return True, {'sfp':{}} def get_thermal_manager(self): from .thermal_manager import ThermalManager return ThermalManager def initialize_system_led(self): """ Init system LED color to green. This is for 201911 branch only """ try: with open(SYSTEM_STATUS_LED_GREEN_FILE, 'w') as f: f.write(LED_ON) except: pass