module openconfig-platform {

    yang-version 1;

    namespace
      "http://openconfig.net/yang/platform";

    prefix oc-platform;

    import openconfig-platform-types {
      prefix oc-platform-types;
    }
    import openconfig-extensions {
      prefix oc-ext;
    }
    import openconfig-alarm-types {
      prefix oc-alarm-types;
    }
    import openconfig-yang-types {
      prefix oc-yang;
    }
    import openconfig-types {
      prefix oc-types;
    }

    include openconfig-platform-common;

    organization "OpenConfig working group";

    contact
      "OpenConfig working group
www.openconfig.net";

    description
      "This module defines a data model for representing a system
component inventory, which can include hardware or software
elements arranged in an arbitrary structure. The primary
relationship supported by the model is containment, e.g.,
components containing subcomponents.

It is expected that this model reflects every field replacable
unit on the device at a minimum (i.e., additional information
may be supplied about non-replacable components).

Every element in the inventory is termed a 'component' with each
component expected to have a unique name and type, and optionally
a unique system-assigned identifier and FRU number.  The
uniqueness is guaranteed by the system within the device.

Components may have properties defined by the system that are
modeled as a list of key-value pairs. These may or may not be
user-configurable.  The model provides a flag for the system
to optionally indicate which properties are user configurable.

Each component also has a list of 'subcomponents' which are
references to other components. Appearance in a list of
subcomponents indicates a containment relationship as described
above.  For example, a linecard component may have a list of
references to port components that reside on the linecard.

This schema is generic to allow devices to express their own
platform-specific structure.  It may be augmented by additional
component type-specific schemas that provide a common structure
for well-known component types.  In these cases, the system is
expected to populate the common component schema, and may
optionally also represent the component and its properties in the
generic structure.

The properties for each component may include dynamic values,
e.g., in the 'state' part of the schema.  For example, a CPU
component may report its utilization, temperature, or other
physical properties.  The intent is to capture all platform-
specific physical data in one location, including inventory
(presence or absence of a component) and state (physical
attributes or status).";

    revision "2022-09-26" {
      description
        "Add state data for base-mac-address.";
      reference
        "0.21.0";

    }

    revision "2022-08-31" {
      description
        "Add new state data for component CLEI code.";
      reference
        "0.20.0";

    }

    revision "2022-07-28" {
      description
        "Add container for controller card component";
      reference
        "0.19.0";

    }

    revision "2022-07-11" {
      description "Add switchover ready";
      reference
        "0.18.0";

    }

    revision "2022-06-10" {
      description
        "Specify units and epoch for switchover and reboot times.";
      reference
        "0.17.0";

    }

    revision "2022-04-21" {
      description
        "Add platform utilization.";
      reference
        "0.16.0";

    }

    revision "2022-02-02" {
      description
        "Add new state data for component reboot and
switchover.";
      reference
        "0.15.0";

    }

    revision "2021-08-13" {
      description
        "Add container for PCIe error statistics";
      reference
        "0.14.0";

    }

    revision "2021-01-18" {
      description
        "Add container for software module component";
      reference
        "0.13.0";

    }

    revision "2019-04-16" {
      description
        "Fix bug in parent path reference";
      reference
        "0.12.2";

    }

    revision "2018-11-21" {
      description
        "Add OpenConfig module metadata extensions.";
      reference
        "0.12.1";

    }

    revision "2018-06-29" {
      description
        "Added location description for components";
      reference
        "0.12.0";

    }

    revision "2018-06-03" {
      description
        "Added parent reference, empty flag and preconfiguration
for components";
      reference
        "0.11.0";

    }

    revision "2018-04-20" {
      description
        "Added new per-component state data: mfg-date and removable";
      reference
        "0.10.0";

    }

    revision "2018-01-30" {
      description
        "Amended approach for modelling CPU - rather than having
a local CPU utilisation state variable, a component with
a CPU should create a subcomponent of type CPU to report
statistics.";
      reference
        "0.9.0";

    }

    revision "2018-01-16" {
      description
        "Added new per-component common data; add temp alarm;
moved hardware-port reference to port model";
      reference
        "0.8.0";

    }

    revision "2017-12-14" {
      description
        "Added anchor containers for component data, added new
component types";
      reference
        "0.7.0";

    }

    revision "2017-08-16" {
      description
        "Added power state enumerated type";
      reference
        "0.6.0";

    }

    revision "2016-12-22" {
      description
        "Added temperature state variable to component";
      reference
        "0.5.0";

    }

    oc-ext:openconfig-version "0.21.0";
    oc-ext:regexp-posix;
    oc-ext:catalog-organization "openconfig";
    oc-ext:origin "openconfig";

    grouping platform-component-properties-config {
      description
        "System-defined configuration data for component properties";
      leaf name {
        type string;
        description
          "System-supplied name of the property -- this is typically
non-configurable";
      }

      leaf value {
        type union {
          type string;
          type boolean;
          type int64;
          type uint64;
          type decimal64 {
            fraction-digits 2;
          }
        }
        description
          "Property values can take on a variety of types.  Signed and
unsigned integer types may be provided in smaller sizes,
e.g., int8, uint16, etc.";
      }
    }  // grouping platform-component-properties-config

    grouping platform-component-properties-state {
      description
        "Operational state data for component properties";
      leaf configurable {
        type boolean;
        description
          "Indication whether the property is user-configurable";
      }
    }  // grouping platform-component-properties-state

    grouping platform-component-properties-top {
      description "Top-level grouping ";
      container properties {
        description "Enclosing container ";
        list property {
          key "name";
          description
            "List of system properties for the component";
          leaf name {
            type leafref {
              path "../config/name";
            }
            description
              "Reference to the property name.";
          }

          container config {
            description
              "Configuration data for each property";
            uses platform-component-properties-config;
          }  // container config

          container state {
            config false;
            description
              "Operational state data for each property";
            uses platform-component-properties-config;

            uses platform-component-properties-state;
          }  // container state
        }  // list property
      }  // container properties
    }  // grouping platform-component-properties-top

    grouping platform-subcomponent-ref-config {
      description
        "Configuration data for subcomponent references";
      leaf name {
        type leafref {
          path
            "../../../../../component/config/name";
        }
        description
          "Reference to the name of the subcomponent";
      }
    }  // grouping platform-subcomponent-ref-config

    grouping platform-subcomponent-ref-state {
      description
        "Operational state data for subcomponent references";
    }  // grouping platform-subcomponent-ref-state

    grouping platform-subcomponent-ref-top {
      description
        "Top-level grouping for list of subcomponent references";
      container subcomponents {
        description
          "Enclosing container for subcomponent references";
        list subcomponent {
          key "name";
          description
            "List of subcomponent references";
          leaf name {
            type leafref {
              path "../config/name";
            }
            description
              "Reference to the name list key";
          }

          container config {
            description
              "Configuration data for the subcomponent";
            uses platform-subcomponent-ref-config;
          }  // container config

          container state {
            config false;
            description
              "Operational state data for the subcomponent";
            uses platform-subcomponent-ref-config;

            uses platform-subcomponent-ref-state;
          }  // container state
        }  // list subcomponent
      }  // container subcomponents
    }  // grouping platform-subcomponent-ref-top

    grouping platform-component-config {
      description
        "Configuration data for components";
      leaf name {
        type string;
        description
          "Device name for the component -- this may not be a
configurable parameter on many implementations.  Where
component preconfiguration is supported, for example,
the component name may be configurable.";
      }
    }  // grouping platform-component-config

    grouping platform-component-state {
      description
        "Operational state data for device components.";
      leaf type {
        type union {
          type identityref {
            base oc-platform-types:OPENCONFIG_HARDWARE_COMPONENT;
          }
          type identityref {
            base oc-platform-types:OPENCONFIG_SOFTWARE_COMPONENT;
          }
        }
        description
          "Type of component as identified by the system";
      }

      leaf id {
        type string;
        description
          "Unique identifier assigned by the system for the
component";
      }

      leaf location {
        type string;
        description
          "System-supplied description of the location of the
component within the system. This could be a bay position,
slot number, socket location, etc. For component types that
have an explicit slot-id attribute, such as linecards, the
system should populate the more specific slot-id.";
      }

      leaf description {
        type string;
        description
          "System-supplied description of the component";
      }

      leaf mfg-name {
        type string;
        description
          "System-supplied identifier for the manufacturer of the
component.  This data is particularly useful when a
component manufacturer is different than the overall
device vendor.";
      }

      leaf mfg-date {
        type oc-yang:date;
        description
          "System-supplied representation of the component's
manufacturing date.";
      }

      leaf hardware-version {
        type string;
        description
          "For hardware components, this is the hardware revision of
the component.";
      }

      leaf firmware-version {
        type string;
        description
          "For hardware components, this is the version of associated
firmware that is running on the component, if applicable.";
      }

      leaf software-version {
        type string;
        description
          "For software components such as operating system or other
software module, this is the version of the currently
running software.";
      }

      leaf serial-no {
        type string;
        description
          "System-assigned serial number of the component.";
      }

      leaf part-no {
        type string;
        description
          "System-assigned part number for the component.  This should
be present in particular if the component is also an FRU
(field replaceable unit)";
      }

      leaf clei-code {
        type string;
        description
          "Common Language Equipment Identifier (CLEI) code of the
component.  This should be present in particular if the
component is also an FRU (field replaceable unit)";
      }

      leaf removable {
        type boolean;
        description
          "If true, this component is removable or is a field
replaceable unit";
      }

      leaf oper-status {
        type identityref {
          base oc-platform-types:COMPONENT_OPER_STATUS;
        }
        description
          "If applicable, this reports the current operational status
of the component.";
      }

      leaf empty {
        type boolean;
        default "false";
        description
          "The empty leaf may be used by the device to indicate that a
component position exists but is not populated.  Using this
flag, it is possible for the management system to learn how
many positions are available (e.g., occupied vs. empty
linecard slots in a chassis).";
      }

      leaf parent {
        type leafref {
          path
            "../../../component/config/name";
        }
        description
          "Reference to the name of the parent component.  Note that
this reference must be kept synchronized with the
corresponding subcomponent reference from the parent
component.";
      }

      leaf redundant-role {
        type oc-platform-types:component-redundant-role;
        description
          "For components that have redundant roles (e.g. two
supervisors in a device, one as primary the other as secondary),
this reports the role of the component.";
      }

      container last-switchover-reason {
        description
          "For components that have redundant roles (e.g. two
supervisors in a device, one as primary the other as secondary),
this reports the reason of the last change of the
component's role.";
        uses oc-platform-types:component-redundant-role-switchover-reason;
      }  // container last-switchover-reason

      leaf last-switchover-time {
        type oc-types:timeticks64;
        units "nanoseconds";
        description
          "For components that have redundant roles (e.g. two
supervisors in a device, one as primary the other as
secondary), this reports the time of the last change of
the component's role. The value is the timestamp in
nanoseconds relative to the Unix Epoch (Jan 1, 1970 00:00:00 UTC).";
      }

      leaf last-reboot-reason {
        type identityref {
          base oc-platform-types:COMPONENT_REBOOT_REASON;
        }
        description
          "This reports the reason of the last reboot of the component.";
      }

      leaf last-reboot-time {
        type oc-types:timeticks64;
        units "nanoseconds";
        description
          "This reports the time of the last reboot of the component. The
value is the timestamp in nanoseconds relative to the Unix Epoch
(Jan 1, 1970 00:00:00 UTC).";
      }

      leaf switchover-ready {
        type boolean;
        description
          "For components that have redundant roles, this reports a value
that indicates if the component is ready to support failover.

The components with a redundant-role should reflect the overall
system's switchover status.  For example, two supervisors in a
device, one as primary and the other as secondary, should both
report the same value.";
      }

      leaf base-mac-address {
        type oc-yang:mac-address;
        description
          "This is a MAC address representing the root or primary MAC
address for a component.  Components such as CHASSIS and
CONTROLLER_CARD are expected to provide a base-mac-address.  The
base mac-address for CHASSIS and a PRIMARY CONTROLLER_CARD may
contain the same value.";
      }
    }  // grouping platform-component-state

    grouping platform-component-temp-alarm-state {
      description
        "Temperature alarm data for platform components";
      leaf alarm-status {
        type boolean;
        description
          "A value of true indicates the alarm has been raised or
asserted.  The value should be false when the alarm is
cleared.";
      }

      leaf alarm-threshold {
        type uint32;
        description
          "The threshold value that was crossed for this alarm.";
      }

      leaf alarm-severity {
        type identityref {
          base oc-alarm-types:OPENCONFIG_ALARM_SEVERITY;
        }
        description
          "The severity of the current alarm.";
      }
    }  // grouping platform-component-temp-alarm-state

    grouping platform-component-power-state {
      description
        "Power-related operational state for device components.";
      leaf allocated-power {
        type uint32;
        units "watts";
        description
          "Power allocated by the system for the component.";
      }

      leaf used-power {
        type uint32;
        units "watts";
        description
          "Actual power used by the component.";
      }
    }  // grouping platform-component-power-state

    grouping platform-component-temp-state {
      description
        "Temperature state data for device components";
      container temperature {
        description
          "Temperature in degrees Celsius of the component. Values include
the instantaneous, average, minimum, and maximum statistics. If
avg/min/max statistics are not supported, the target is expected
to just supply the instant value";
        uses oc-platform-types:avg-min-max-instant-stats-precision1-celsius;

        uses platform-component-temp-alarm-state;
      }  // container temperature
    }  // grouping platform-component-temp-state

    grouping platform-component-memory-state {
      description
        "Per-component memory statistics";
      container memory {
        description
          "For components that have associated memory, these values
report information about available and utilized memory.";
        leaf available {
          type uint64;
          units "bytes";
          description
            "The available memory physically installed, or logically
allocated to the component.";
        }

        leaf utilized {
          type uint64;
          units "bytes";
          description
            "The memory currently in use by processes running on
the component, not considering reserved memory that is
not available for use.";
        }
      }  // container memory
    }  // grouping platform-component-memory-state

    grouping pcie-uncorrectable-errors {
      description
        "PCIe uncorrectable error statistics.";
      leaf total-errors {
        type oc-yang:counter64;
        description
          "Total number of uncorrectable errors detected by PCIe device
since the system booted, according to PCIe AER driver.";
      }

      leaf undefined-errors {
        type oc-yang:counter64;
        description
          "Number of undefined errors detected by PCIe device since the
system booted, according to PCIe AER driver.";
      }

      leaf data-link-errors {
        type oc-yang:counter64;
        description
          "Number of data-link errors detected by PCIe device since the
system booted, according to PCIe AER driver.";
      }

      leaf surprise-down-errors {
        type oc-yang:counter64;
        description
          "Number of unexpected link down errors detected by PCIe device
since the system booted, according to PCIe AER driver.";
      }

      leaf poisoned-tlp-errors {
        type oc-yang:counter64;
        description
          "Number of poisoned TLP errors detected by PCIe device since the
system booted, according to PCIe AER driver.";
      }

      leaf flow-control-protocol-errors {
        type oc-yang:counter64;
        description
          "Number of flow control protocol errors detected by PCIe device
since the system booted, according to PCIe AER driver.";
      }

      leaf completion-timeout-errors {
        type oc-yang:counter64;
        description
          "Number of completion timeout errors detected by PCIe device
since the system booted, according to PCIe AER driver.";
      }

      leaf completion-abort-errors {
        type oc-yang:counter64;
        description
          "Number of completion abort errors detected by PCIe device
since the system booted, according to PCIe AER driver.";
      }

      leaf unexpected-completion-errors {
        type oc-yang:counter64;
        description
          "Number of unexpected completion errors detected by PCIe device
since the system booted, according to PCIe AER driver.";
      }

      leaf receiver-overflow-errors {
        type oc-yang:counter64;
        description
          "Number of receiver overflow errors detected by PCIe device
since the system booted, according to PCIe AER driver.";
      }

      leaf malformed-tlp-errors {
        type oc-yang:counter64;
        description
          "Number of malformed TLP errors detected by PCIe device since the
system booted, according to PCIe AER driver.";
      }

      leaf ecrc-errors {
        type oc-yang:counter64;
        description
          "Number of ECRC errors detected by PCIe device since the system
booted, according to PCIe AER driver.";
      }

      leaf unsupported-request-errors {
        type oc-yang:counter64;
        description
          "Number of unsupported request errors detected by PCIe device
since the system booted, according to PCIe AER driver.";
      }

      leaf acs-violation-errors {
        type oc-yang:counter64;
        description
          "Number of access control errors detected by PCIe device since
the system booted, according to PCIe AER driver.";
      }

      leaf internal-errors {
        type oc-yang:counter64;
        description
          "Number of internal errors detected by PCIe device since the
system booted, according to PCIe AER driver.";
      }

      leaf blocked-tlp-errors {
        type oc-yang:counter64;
        description
          "Number of blocked TLP errors detected by PCIe device since
the system booted, according to PCIe AER driver.";
      }

      leaf atomic-op-blocked-errors {
        type oc-yang:counter64;
        description
          "Number of atomic operation blocked errors detected by PCIe
device since the system booted, according to PCIe AER driver.";
      }

      leaf tlp-prefix-blocked-errors {
        type oc-yang:counter64;
        description
          "Number of TLP prefix blocked errors detected by PCIe device
since the system booted, according to PCIe AER driver.";
      }
    }  // grouping pcie-uncorrectable-errors

    grouping pcie-correctable-errors {
      description
        "PCIe correctable error statistics.";
      leaf total-errors {
        type oc-yang:counter64;
        description
          "Total number of correctable errors detected by PCIe device
since the system booted, according to PCIe AER driver.";
      }

      leaf receiver-errors {
        type oc-yang:counter64;
        description
          "Number of receiver errors detected by PCIe device since the
system booted, according to PCIe AER driver.";
      }

      leaf bad-tlp-errors {
        type oc-yang:counter64;
        description
          "Number of TLPs with bad LCRC detected by PCIe device since the
system booted, according to PCIe AER driver.";
      }

      leaf bad-dllp-errors {
        type oc-yang:counter64;
        description
          "Number of DLLPs with bad LCRC detected by PCIe device since the
system booted, according to PCIe AER driver.";
      }

      leaf relay-rollover-errors {
        type oc-yang:counter64;
        description
          "Number of relay rollover errors detected by PCIe device since the
system booted, according to PCIe AER driver.";
      }

      leaf replay-timeout-errors {
        type oc-yang:counter64;
        description
          "Number of replay timeout errors detected by PCIe device since the
system booted, according to PCIe AER driver.";
      }

      leaf advisory-non-fatal-errors {
        type oc-yang:counter64;
        description
          "Number of advisory non fatal errors detected by PCIe device since
the system booted, according to PCIe AER driver.";
      }

      leaf internal-errors {
        type oc-yang:counter64;
        description
          "Number of internal errors detected by PCIe device since the system
booted, according to PCIe AER driver.";
      }

      leaf hdr-log-overflow-errors {
        type oc-yang:counter64;
        description
          "Number of header log overflow errors detected by PCIe device since
the system booted, according to PCIe AER driver.";
      }
    }  // grouping pcie-correctable-errors

    grouping platform-component-pcie-state {
      description
        "Per-component PCIe error statistics";
      container pcie {
        description
          "Components that are connected to the system over the Peripheral
Component Interconnect Express (PCIe), report the fatal, non-fatal
and correctable PCIe error counts.";
        container fatal-errors {
          description
            "The count of the fatal PCIe errors.";
          uses pcie-uncorrectable-errors;
        }  // container fatal-errors

        container non-fatal-errors {
          description
            "The count of the non-fatal PCIe errors.";
          uses pcie-uncorrectable-errors;
        }  // container non-fatal-errors

        container correctable-errors {
          description
            "The count of the correctable PCIe errors.";
          uses pcie-correctable-errors;
        }  // container correctable-errors
      }  // container pcie
    }  // grouping platform-component-pcie-state

    grouping platform-anchors-top {
      description
        "This grouping is used to add containers for components that
are common across systems, but do not have a defined schema
within the openconfig-platform module.  Containers should be
added to this grouping for components that are expected to
exist in multiple systems, with corresponding modules
augmenting the config/state containers directly.";
      container chassis {
        description
          "Data for chassis components";
        container config {
          description
            "Configuration data for chassis components";
        }  // container config

        container state {
          config false;
          description
            "Operational state data for chassis components";
        }  // container state

        uses platform-utilization-top;
      }  // container chassis

      container port {
        description
          "Data for physical port components";
        container config {
          description
            "Configuration data for physical port components";
        }  // container config

        container state {
          config false;
          description
            "Operational state data for physical port components";
        }  // container state
      }  // container port

      container power-supply {
        description
          "Data for power supply components";
        container config {
          description
            "Configuration data for power supply components";
        }  // container config

        container state {
          config false;
          description
            "Operational state data for power supply components";
        }  // container state
      }  // container power-supply

      container fan {
        description
          "Data for fan components";
        container config {
          description
            "Configuration data for fan components";
        }  // container config

        container state {
          config false;
          description
            "Operational state data for fan components";
        }  // container state
      }  // container fan

      container fabric {
        description
          "Data for fabric components";
        container config {
          description
            "Configuration data for fabric components";
        }  // container config

        container state {
          config false;
          description
            "Operational state data for fabric components";
        }  // container state
      }  // container fabric

      container storage {
        description
          "Data for storage components";
        container config {
          description
            "Configuration data for storage components";
        }  // container config

        container state {
          config false;
          description
            "Operational state data for storage components";
        }  // container state
      }  // container storage

      container cpu {
        description
          "Data for cpu components";
        container config {
          description
            "Configuration data for cpu components";
        }  // container config

        container state {
          config false;
          description
            "Operational state data for cpu components";
        }  // container state
      }  // container cpu

      container integrated-circuit {
        description
          "Data for chip components, such as ASIC, NPUs, etc.";
        container config {
          description
            "Configuration data for chip components";
        }  // container config

        container state {
          config false;
          description
            "Operational state data for chip components";
        }  // container state

        uses platform-utilization-top;
      }  // container integrated-circuit

      container backplane {
        description
          "Data for backplane components";
        container config {
          description
            "Configuration data for backplane components";
        }  // container config

        container state {
          config false;
          description
            "Operational state data for backplane components";
        }  // container state
      }  // container backplane

      container software-module {
        description
          "Data for software module components, i.e., for components
with type=SOFTWARE_MODULE";
        container config {
          description
            "Configuration data for software module components";
        }  // container config

        container state {
          config false;
          description
            "Operational state data for software module components";
        }  // container state
      }  // container software-module

      container controller-card {
        description
          "Data for controller card components, i.e., for components
with type=CONTROLLER_CARD";
        container config {
          description
            "Configuration data for controller card components. Note that disabling
power to the primary supervisor should be rejected, and the operator is
required to perform a switchover first.";
        }  // container config

        container state {
          config false;
          description
            "Operational state data for controller card components";
        }  // container state
      }  // container controller-card
    }  // grouping platform-anchors-top

    grouping platform-component-top {
      description
        "Top-level grouping for components in the device inventory";
      container components {
        description
          "Enclosing container for the components in the system.";
        list component {
          key "name";
          description
            "List of components, keyed by component name.";
          leaf name {
            type leafref {
              path "../config/name";
            }
            description
              "References the component name";
          }

          container config {
            description
              "Configuration data for each component";
            uses platform-component-config;
          }  // container config

          container state {
            config false;
            description
              "Operational state data for each component";
            uses platform-component-config;

            uses platform-component-state;

            uses platform-component-temp-state;

            uses platform-component-memory-state;

            uses platform-component-power-state;

            uses platform-component-pcie-state {
              when
                "./type = 'oc-platform-types:STORAGE' or 'oc-platform-types:INTEGRATED_CIRCUIT' or 'oc-platform-types:FRU'";
            }
          }  // container state

          uses platform-component-properties-top;

          uses platform-subcomponent-ref-top;

          uses platform-anchors-top;
        }  // list component
      }  // container components
    }  // grouping platform-component-top

    uses platform-component-top;
  }  // module openconfig-platform