diff --git a/src/nvidia-gpu/OcpMctpVdm.hpp b/src/nvidia-gpu/OcpMctpVdm.hpp
new file mode 100644
index 0000000..735d0a5
--- /dev/null
+++ b/src/nvidia-gpu/OcpMctpVdm.hpp
@@ -0,0 +1,107 @@
+/*
+ * SPDX-FileCopyrightText: Copyright (c) 2024-2025 NVIDIA CORPORATION &
+ * AFFILIATES. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#include <cstdint>
+#include <span>
+
+namespace ocp
+{
+namespace accelerator_management
+{
+
+constexpr uint8_t messageType = 0x7E;
+
+constexpr uint8_t ocpType = 8;
+constexpr uint8_t ocpVersion = 9;
+constexpr uint8_t ocpTypeBitOffset = 4;
+constexpr uint8_t ocpTypeBitMask = 0b11110000;
+constexpr uint8_t ocpVersionBitMask = 0b00001111;
+constexpr uint8_t instanceIdBitMask = 0b00011111;
+constexpr uint8_t instanceIdReservedBitMask = 0b00100000;
+constexpr uint8_t datagramBitMask = 0b01000000;
+constexpr uint8_t requestBitMask = 0b10000000;
+
+constexpr uint8_t instanceMin = 0;
+constexpr uint8_t instanceMax = 31;
+
+enum class CompletionCode : uint8_t
+{
+    SUCCESS = 0x00,
+    ERROR = 0x01,
+    ERR_INVALID_DATA = 0x02,
+    ERR_INVALID_DATA_LENGTH = 0x03,
+    ERR_NOT_READY = 0x04,
+    ERR_UNSUPPORTED_COMMAND_CODE = 0x05,
+    ERR_UNSUPPORTED_MSG_TYPE = 0x06,
+    ERR_BUS_ACCESS = 0x7f,
+    ERR_NULL = 0x80,
+};
+
+enum class ReasonCode : uint16_t
+{
+    REASON_NONE = 0x00,
+};
+
+enum class MessageType : uint8_t
+{
+    RESPONSE = 0, //!< OCP MCTP VDM response message
+    REQUEST = 2,  //!< OCP MCTP VDM request message
+};
+
+struct BindingPciVid
+{
+    uint16_t pci_vendor_id;                      //!< PCI defined vendor ID
+    uint8_t instance_id;                         //!< Instance ID
+    uint8_t ocp_version;                         //!< OCP version
+    uint8_t ocp_accelerator_management_msg_type; //!< Message Type
+} __attribute__((packed));
+
+struct Message
+{
+    BindingPciVid hdr; //!< OCP MCTP VDM message header
+} __attribute__((packed));
+
+struct BindingPciVidInfo
+{
+    uint8_t ocp_accelerator_management_msg_type;
+    uint8_t instance_id;
+    uint8_t msg_type;
+};
+
+struct CommonRequest
+{
+    Message msgHdr;
+    uint8_t command;
+    uint8_t data_size;
+} __attribute__((packed));
+
+struct CommonResponse
+{
+    Message msgHdr;
+    uint8_t command;
+    uint8_t completion_code;
+    uint16_t reserved;
+    uint16_t data_size;
+} __attribute__((packed));
+
+struct CommonNonSuccessResponse
+{
+    Message msgHdr;
+    uint8_t command;
+    uint8_t completion_code;
+    uint16_t reason_code;
+} __attribute__((packed));
+
+int packHeader(uint16_t pciVendorId, const BindingPciVidInfo& hdr,
+               BindingPciVid& msg);
+
+int decodeReasonCodeAndCC(std::span<const uint8_t> buf, CompletionCode& cc,
+                          uint16_t& reasonCode);
+
+} // namespace accelerator_management
+} // namespace ocp