DellEMC Z9100 : Platform2.0 API implementation [PSU, Thermal]

platform/broadcom/sonic-platform-modules-dell/z9100/sonic_platform/__init__.py

@@ -1,3 +1,3 @@
-__all__ = ["platform", "chassis", "sfp"]
+__all__ = ["platform", "chassis", "fan", "psu", "sfp", "thermal"]
 from sonic_platform import *
 

platform/broadcom/sonic-platform-modules-dell/z9100/sonic_platform/chassis.py

@@ -15,6 +15,8 @@
     from sonic_platform_base.chassis_base import ChassisBase
     from sonic_platform.sfp import Sfp
     from sonic_platform.fan import Fan
+    from sonic_platform.psu import Psu
+    from sonic_platform.thermal import Thermal
     from eeprom import Eeprom
 except ImportError as e:
     raise ImportError(str(e) + "- required module not found")
@@ -23,6 +25,7 @@
 MAX_Z9100_FANTRAY = 5
 MAX_Z9100_FAN = 2
 MAX_Z9100_PSU = 2
+MAX_Z9100_THERMAL = 8
 
 BIOS_QUERY_VERSION_COMMAND = "dmidecode -s system-version"
 #components definitions
@@ -104,6 +107,14 @@ def __init__(self):
                 fan = Fan(i, j)
                 self._fan_list.append(fan)
 
+        for i in range(MAX_Z9100_PSU):
+            psu = Psu(i)
+            self._psu_list.append(psu)
+
+        for i in range(MAX_Z9100_THERMAL):
+            thermal = Thermal(i)
+            self._thermal_list.append(thermal)
+
         # Initialize component list
         self._component_name_list.append(COMPONENT_BIOS)
         self._component_name_list.append(SWITCH_CPLD1)
@@ -191,6 +202,17 @@ def get_serial_number(self):
         """
         return self.sys_eeprom.serial_number_str()
 
+    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.sys_eeprom.system_eeprom_info()
+
     def get_reboot_cause(self):
         """
         Retrieves the cause of the previous reboot

platform/broadcom/sonic-platform-modules-dell/z9100/sonic_platform/eeprom.py

@@ -21,11 +21,42 @@ class Eeprom(eeprom_tlvinfo.TlvInfoDecoder):
     def __init__(self):
         self.eeprom_path = "/sys/class/i2c-adapter/i2c-2/2-0050/eeprom"
         super(Eeprom, self).__init__(self.eeprom_path, 0, '', True)
+        self.eeprom_tlv_dict = dict()
         try:
             self.eeprom_data = self.read_eeprom()
         except:
             self.eeprom_data = "N/A"
             raise RuntimeError("Eeprom is not Programmed")
+        else:
+            eeprom = self.eeprom_data
+
+            if not self.is_valid_tlvinfo_header(eeprom):
+                return
+
+            total_length = (ord(eeprom[9]) << 8) | ord(eeprom[10])
+            tlv_index = self._TLV_INFO_HDR_LEN
+            tlv_end = self._TLV_INFO_HDR_LEN + total_length
+
+            while (tlv_index + 2) < len(eeprom) and tlv_index < tlv_end:
+                if not self.is_valid_tlv(eeprom[tlv_index:]):
+                    break
+
+                tlv = eeprom[tlv_index:tlv_index + 2
+                             + ord(eeprom[tlv_index + 1])]
+                code = "0x%02X" % (ord(tlv[0]))
+
+                if ord(tlv[0]) == self._TLV_CODE_VENDOR_EXT:
+                    value = str((ord(tlv[2]) << 24) | (ord(tlv[3]) << 16) |
+                                (ord(tlv[4]) << 8) | ord(tlv[5]))
+                    value += str(tlv[6:6 + ord(tlv[1])])
+                else:
+                    name, value = self.decoder(None, tlv)
+
+                self.eeprom_tlv_dict[code] = value
+                if ord(eeprom[tlv_index]) == self._TLV_CODE_CRC_32:
+                    break
+
+                tlv_index += ord(eeprom[tlv_index+1]) + 2
 
     def serial_number_str(self):
         (is_valid, results) = self.get_tlv_field(
@@ -74,3 +105,10 @@ def revision_str(self):
 
         return results[2]
 
+    def system_eeprom_info(self):
+        """
+        Returns a dictionary, where keys are the type code defined in
+        ONIE EEPROM format and values are their corresponding values
+        found in the system EEPROM.
+        """
+        return self.eeprom_tlv_dict

platform/broadcom/sonic-platform-modules-dell/z9100/sonic_platform/fan.py

@@ -26,7 +26,7 @@ class Fan(FanBase):
     HWMON_NODE = os.listdir(HWMON_DIR)[0]
     MAILBOX_DIR = HWMON_DIR + HWMON_NODE
 
-    def __init__(self, fantray_index, fan_index=1, psu_fan=False):
+    def __init__(self, fantray_index=1, fan_index=1, psu_fan=False):
         self.is_psu_fan = psu_fan
         if not self.is_psu_fan:
             # API index is starting from 0, DellEMC platform index is starting
@@ -73,7 +73,7 @@ def get_name(self):
         if not self.is_psu_fan:
             return "FanTray{}-Fan{}".format(self.fantrayindex, self.fanindex)
         else:
-            return "PSU{} Fan".format(self.index - 10)
+            return "PSU{} Fan".format(self.fanindex - 10)
 
     def get_model(self):
         """

platform/broadcom/sonic-platform-modules-dell/z9100/sonic_platform/psu.py

@@ -0,0 +1,237 @@
+#!/usr/bin/env python
+
+########################################################################
+# DellEMC Z9100
+#
+# Module contains an implementation of SONiC Platform Base API and
+# provides the PSUs' information which are available in the platform
+#
+########################################################################
+
+
+try:
+    import os
+    from sonic_platform_base.psu_base import PsuBase
+    from sonic_platform.fan import Fan
+except ImportError as e:
+    raise ImportError(str(e) + "- required module not found")
+
+
+class Psu(PsuBase):
+    """DellEMC Platform-specific PSU class"""
+
+    HWMON_DIR = "/sys/devices/platform/SMF.512/hwmon/"
+    HWMON_NODE = os.listdir(HWMON_DIR)[0]
+    MAILBOX_DIR = HWMON_DIR + HWMON_NODE
+
+    def __init__(self, psu_index):
+        # PSU is 1-based in DellEMC platforms
+        self.index = psu_index + 1
+        self.psu_presence_reg = "psu{}_presence".format(self.index)
+        self.psu_serialno_reg = "psu{}_serialno".format(self.index)
+        if self.index == 1:
+            self.psu_voltage_reg = "in30_input"
+            self.psu_current_reg = "curr602_input"
+            self.psu_power_reg = "power2_input"
+        elif self.index == 2:
+            self.psu_voltage_reg = "in32_input"
+            self.psu_current_reg = "curr702_input"
+            self.psu_power_reg = "power4_input"
+
+        # Overriding _fan_list class variable defined in PsuBase, to
+        # make it unique per Psu object
+        self._fan_list = []
+
+        # Passing True to specify it is a PSU fan
+        psu_fan = Fan(fan_index=self.index, psu_fan=True)
+        self._fan_list.append(psu_fan)
+
+    def _get_pmc_register(self, reg_name):
+        # On successful read, returns the value read from given
+        # reg_name and on failure returns 'ERR'
+        rv = 'ERR'
+        mb_reg_file = self.MAILBOX_DIR + '/' + reg_name
+
+        if (not os.path.isfile(mb_reg_file)):
+            return rv
+
+        try:
+            with open(mb_reg_file, 'r') as fd:
+                rv = fd.read()
+        except Exception as error:
+            rv = 'ERR'
+
+        rv = rv.rstrip('\r\n')
+        rv = rv.lstrip(" ")
+        return rv
+
+    def get_name(self):
+        """
+        Retrieves the name of the device
+
+        Returns:
+            string: The name of the device
+        """
+        return "PSU{}".format(self.index)
+
+    def get_presence(self):
+        """
+        Retrieves the presence of the Power Supply Unit (PSU)
+
+        Returns:
+            bool: True if PSU is present, False if not
+        """
+        status = False
+        psu_presence = self._get_pmc_register(self.psu_presence_reg)
+        if (psu_presence != 'ERR'):
+            psu_presence = int(psu_presence, 16)
+            # Checking whether bit 0 is not set
+            if (~psu_presence & 0b1):
+                status = True
+
+        return status
+
+    def get_model(self):
+        """
+        Retrieves the part number of the PSU
+
+        Returns:
+            string: Part number of PSU
+        """
+        # For Serial number "US-01234D-54321-25A-0123-A00", the part
+        # number is "01234D"
+        psu_serialno = self._get_pmc_register(self.psu_serialno_reg)
+        if (psu_serialno != 'ERR') and self.get_presence():
+            if (len(psu_serialno.split('-')) > 1):
+                psu_partno = psu_serialno.split('-')[1]
+            else:
+                psu_partno = 'NA'
+        else:
+            psu_partno = 'NA'
+
+        return psu_partno
+
+    def get_serial(self):
+        """
+        Retrieves the serial number of the PSU
+
+        Returns:
+            string: Serial number of PSU
+        """
+        # Sample Serial number format "US-01234D-54321-25A-0123-A00"
+        psu_serialno = self._get_pmc_register(self.psu_serialno_reg)
+        if (psu_serialno == 'ERR') or not self.get_presence():
+            psu_serialno = 'NA'
+
+        return psu_serialno
+
+    def get_status(self):
+        """
+        Retrieves the operational status of the PSU
+
+        Returns:
+            bool: True if PSU is operating properly, False if not
+        """
+        status = False
+        psu_status = self._get_pmc_register(self.psu_presence_reg)
+        if (psu_status != 'ERR'):
+            psu_status = int(psu_status, 16)
+            # Checking whether both bit 3 and bit 2 are not set
+            if (~psu_status & 0b1000) and (~psu_status & 0b0100):
+                status = True
+
+        return status
+
+    def get_voltage(self):
+        """
+        Retrieves current PSU voltage output
+
+        Returns:
+            A float number, the output voltage in volts,
+            e.g. 12.1
+        """
+        psu_voltage = self._get_pmc_register(self.psu_voltage_reg)
+        if (psu_voltage != 'ERR') and self.get_presence():
+            # Converting the value returned by driver which is in
+            # millivolts to volts
+            psu_voltage = float(psu_voltage) / 1000
+        else:
+            psu_voltage = 0.0
+
+        return psu_voltage
+
+    def get_current(self):
+        """
+        Retrieves present electric current supplied by PSU
+
+        Returns:
+            A float number, electric current in amperes,
+            e.g. 15.4
+        """
+        psu_current = self._get_pmc_register(self.psu_current_reg)
+        if (psu_current != 'ERR') and self.get_presence():
+            # Converting the value returned by driver which is in
+            # milliamperes to amperes
+            psu_current = float(psu_current) / 1000
+        else:
+            psu_current = 0.0
+
+        return psu_current
+
+    def get_power(self):
+        """
+        Retrieves current energy supplied by PSU
+
+        Returns:
+            A float number, the power in watts,
+            e.g. 302.6
+        """
+        psu_power = self._get_pmc_register(self.psu_power_reg)
+        if (psu_power != 'ERR') and self.get_presence():
+            # Converting the value returned by driver which is in
+            # microwatts to watts
+            psu_power = float(psu_power) / 1000000
+        else:
+            psu_power = 0.0
+
+        return psu_power
+
+    def get_powergood_status(self):
+        """
+        Retrieves the powergood status of PSU
+
+        Returns:
+            A boolean, True if PSU has stablized its output voltages and
+            passed all its internal self-tests, False if not.
+        """
+        status = False
+        if self.get_status() and self._fan_list[0].get_status():
+            status = True
+
+        return status
+
+    def get_status_led(self):
+        """
+        Gets the state of the PSU status LED
+
+        Returns:
+            A string, one of the predefined STATUS_LED_COLOR_* strings.
+        """
+        if self.get_powergood_status():
+            return self.STATUS_LED_COLOR_GREEN
+        else:
+            return self.STATUS_LED_COLOR_OFF
+
+    def set_status_led(self, color):
+        """
+        Sets the state of the PSU status LED
+        Args:
+            color: A string representing the color with which to set the
+                   PSU status LED
+        Returns:
+            bool: True if status LED state is set successfully, False if
+                  not
+        """
+        # In Z9100, SmartFusion FPGA controls the PSU LED and the PSU
+        # LED state cannot be changed from CPU.
+        return False