Initial commit: Open-IOV vGPU-IO complete stack

- Firmware decompilation: GSP 570.144W (28.5MB ELF, RV64IMAC), 132 decompiled C files
- Kernel modules: nvidia.ko (34MB, OpenRM), open-iov-vfio.ko (2.8MB, VFIO mdev), gsp-vgpu.ko (1.8MB, guest driver)
- Userspace: libiov.so/libvgpu.so (76KB), example_vgpu (28KB), rpc_emulator.c
- PCI config space emulation (256B with PM, MSI, MSI-X, PCIe caps)
- 12 RPC types fully mapped from firmware decompilation
- BAR trap, WPR, scheduling, notification, migration emulation
- Helper scripts: load_vgpu_stack, create_mdev, launch_qemu_vgpu, test_vgpu_stack, setup_guest_driver, unload_vgpu_stack
- Architecture documentation
- Wiki: 10 technical documents
- Git LFS for large binaries (.ko, .bin, .iso, .img, .o, ghidra repos)
- nvidia-open-gpu-kernel-modules as submodule

1 files changed, 436 insertions, 0 deletions

diff --git a/userspace/sdks/nv570/inc/ctrl/ctrlc637.h b/userspace/sdks/nv570/inc/ctrl/ctrlc637.h
new file mode 100644
index 0000000..fcb1dff
--- /dev/null
+++ b/userspace/sdks/nv570/inc/ctrl/ctrlc637.h
@@ -0,0 +1,436 @@
+/*
+ * SPDX-FileCopyrightText: Copyright (c) 2019-2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#pragma once
+
+#include <nvtypes.h>
+
+//
+// This file was generated with FINN, an NVIDIA coding tool.
+// Source file:      ctrl/ctrlc637.finn
+//
+
+#include "nvlimits.h"
+#include "ctrl/ctrlxxxx.h"
+/* AMPERE_SMC_PARTITION_REF commands and parameters */
+
+#define NVC637_CTRL_CMD(cat,idx)             NVXXXX_CTRL_CMD(0xC637, NVC637_CTRL_##cat, idx)
+
+/* Command categories (6bits) */
+#define NVC637_CTRL_RESERVED        (0x00)
+#define NVC637_CTRL_EXEC_PARTITIONS (0x01)
+
+
+/*!
+ * NVC637_CTRL_CMD_NULL
+ *
+ * This command does nothing.
+ * This command does not take any parameters.
+ *
+ * Possible status values returned are:
+ *   NV_OK
+ */
+#define NVC637_CTRL_CMD_NULL        (0xc6370000) /* finn: Evaluated from "(FINN_AMPERE_SMC_PARTITION_REF_RESERVED_INTERFACE_ID << 8) | 0x0" */
+
+/*!
+ * NVC637_CTRL_EXEC_PARTITIONS_INFO
+ *
+ * This structure specifies resources in an execution partition
+ *
+ *  gpcCount[IN/OUT]
+ *      - Total Number of GPCs in this partition (including GFX Supported GPCs)
+ *
+ *  gfxGpcCount[IN/OUT]
+ *      - Number of GFX GPCs in this partition. This should be a subset of gpcs inlcuded in gpcCount
+ *
+ *  VeidCount[OUT]
+ *      - Number of VEIDs available in this partition.
+ *
+ *  ceCount[IN/OUT]
+ *      - Copy Engines in this partition
+ *
+ *  nvEncCount[IN/OUT]
+ *      - Encoder Engines in this partition
+ *
+ *  nvDecCount[IN/OUT]
+ *      - Decoder Engines in this partition
+ *
+ *  nvJpgCount[IN/OUT]
+ *      - Jpg Engines in this partition
+ *
+ *  nvOfaCount[IN/OUT]
+ *      - Ofa engines in this partition
+ *
+ *  sharedEngFlag[IN/OUT]
+ *      - Flags determining whether above engines are shared with other execution partitions
+ *
+ *  veidStartOffset[OUT]
+ *      - VEID start offset within GPU partition
+ *
+ *  smCount[IN/OUT]
+ *      - Number of active SMs in this partition
+ *
+ *  spanStart[IN/OUT]
+ *      - First slot in the span for an execution partition placement
+ *
+ *  computeSize[IN/OUT]
+ *      - Flag corresponding to the compute profile used
+ *
+ *  execPartFlags[IN/OUT]
+ *      - Bitmap of NVC637_CTRL_EXEC_PARTITIONS_FLAGS*
+ */
+typedef struct NVC637_CTRL_EXEC_PARTITIONS_INFO {
+    NvU32 gpcCount;
+    NvU32 gfxGpcCount;
+    NvU32 veidCount;
+    NvU32 ceCount;
+    NvU32 nvEncCount;
+    NvU32 nvDecCount;
+    NvU32 nvJpgCount;
+    NvU32 ofaCount;
+    NvU32 sharedEngFlag;
+    NvU32 veidStartOffset;
+    NvU32 smCount;
+    NvU32 spanStart;
+    NvU32 computeSize;
+    NvU32 execPartFlags;
+} NVC637_CTRL_EXEC_PARTITIONS_INFO;
+
+#define NVC637_CTRL_EXEC_PARTITIONS_SHARED_FLAG         31:0
+#define NVC637_CTRL_EXEC_PARTITIONS_SHARED_FLAG_NONE                      0x0
+#define NVC637_CTRL_EXEC_PARTITIONS_SHARED_FLAG_CE      NVBIT(0)
+#define NVC637_CTRL_EXEC_PARTITIONS_SHARED_FLAG_NVDEC   NVBIT(1)
+#define NVC637_CTRL_EXEC_PARTITIONS_SHARED_FLAG_NVENC   NVBIT(2)
+#define NVC637_CTRL_EXEC_PARTITIONS_SHARED_FLAG_OFA     NVBIT(3)
+#define NVC637_CTRL_EXEC_PARTITIONS_SHARED_FLAG_NVJPG   NVBIT(4)
+
+#define NVC637_CTRL_EXEC_PARTITIONS_FLAGS               31:0
+//
+// NVC637_CTRL_EXEC_PARTITIONS_FLAGS_OPTIMIZE
+// If set, RM will try to select partition HW resources giving better performance for a
+// specified usecase.
+//     OPTIMIZE_FOR_MGPU:
+// optimize for an interface to communicate with other GPUs. This can give latency
+// reduction benefit to applications using multi-GPU communication.
+//     OPTIMIZE_FOR_HOSTIF:
+// optimal config for a better Host interface and memory access performance.
+//
+// The flag makes sense only on GPUs with multiple compute dielets because one of the
+// dielets can be closer to MGPU communication interface (e.g. NVLINK). While HW compute
+// work scheduler on any dielet is capable of driving a computation work, selecting the
+// one closer to NVLINK will decrease latencies for NVLINK communications.
+// Default behavior (if flag is not provided) is for RM to select dielet closer to host
+// interface and memory, to reduce new work scheduling latency.
+// On a single dielet GPUs this flag has no effect.
+// Currently this flag is used by RM for Full compute instances only.
+//
+#define NVC637_CTRL_EXEC_PARTITIONS_FLAGS_OPTIMIZE       1:0
+#define NVC637_CTRL_EXEC_PARTITIONS_FLAGS_OPTIMIZE_FOR_HOSTIF             (0x00000000)
+#define NVC637_CTRL_EXEC_PARTITIONS_FLAGS_OPTIMIZE_FOR_MGPU               (0x00000001)
+#define NVC637_CTRL_EXEC_PARTITIONS_FLAGS_OPTIMIZE_DEFAULT                NVC637_CTRL_EXEC_PARTITIONS_FLAGS_OPTIMIZE_FOR_HOSTIF
+
+#define NVC637_CTRL_MAX_EXEC_PARTITIONS                                   8
+#define NVC637_CTRL_EXEC_PARTITIONS_ID_INVALID                            0xFFFFFFFF
+
+/*!
+ * NVC637_CTRL_EXEC_PARTITIONS_CREATE_PARAMS
+ *
+ * This command will create requested execution partitions under the subscribed
+ * memory partition. The memory partition is expected to be configured before
+ * execution partition creation.
+ *
+ * bQuery[IN]
+ *      - If NV_TRUE, execution partitions will not be created, but return
+ *      status of NV_OK will indicate that the request is valid and can
+ *      currently be fulfilled
+ * flag [IN]
+ *      REQUEST_WITH_PART_ID
+ *      - If set, RM will try to assign execution partition id requested by clients.
+ *      This flag is only supported on vGPU enabled RM build and will be removed
+ *      when vgpu plugin implements virtualized execution partition ID support.
+ *      (bug 2938187)
+ *
+ *      REQUEST_AT_SPAN
+ *      - If set, RM will try to assign execution partition resources at the specified span.
+ *      This flag currently is only useful for chips in which CTS IDs are mandatory in RM,
+ *      as it allows the requester to position compute instances without using RM best fit
+ *      allocation.
+ *
+ * execPartCount[IN]
+ *      - Number of execution partitions requested
+ *
+ * execPartInfo[IN]
+ *      - Requested execution partition resources for each requested partition
+ *
+ * execPartId[OUT]
+ *      - ID of each requested execution partition
+ *
+ * Possible status values returned are:
+ *   NV_OK
+ *   NV_ERR_NOT_SUPPORTED
+ */
+
+#define NVC637_CTRL_DMA_EXEC_PARTITIONS_CREATE_REQUEST_WITH_PART_ID                   0:0
+#define NVC637_CTRL_DMA_EXEC_PARTITIONS_CREATE_REQUEST_WITH_PART_ID_FALSE (0x00000000)
+#define NVC637_CTRL_DMA_EXEC_PARTITIONS_CREATE_REQUEST_WITH_PART_ID_TRUE  (0x00000001)
+#define NVC637_CTRL_DMA_EXEC_PARTITIONS_CREATE_REQUEST_AT_SPAN                        1:1
+#define NVC637_CTRL_DMA_EXEC_PARTITIONS_CREATE_REQUEST_AT_SPAN_FALSE      (0x00000000)
+#define NVC637_CTRL_DMA_EXEC_PARTITIONS_CREATE_REQUEST_AT_SPAN_TRUE       (0x00000001)
+
+#define NVC637_CTRL_CMD_EXEC_PARTITIONS_CREATE (0xc6370101) /* finn: Evaluated from "(FINN_AMPERE_SMC_PARTITION_REF_EXEC_PARTITIONS_INTERFACE_ID << 8) | NVC637_CTRL_EXEC_PARTITIONS_CREATE_PARAMS_MESSAGE_ID" */
+
+/*!
+ * NVC637_CTRL_EXEC_PARTITIONS_DELETE_PARAMS
+ *
+ * This command will delete requested execution partitions.
+ *
+ * execPartCount[IN]
+ *      - Number of execution partitions to delete.
+ *
+ * execPartId[IN]
+ *      - Execution partition IDs to delete
+ *
+ * Possible status values returned are:
+ *   NV_OK
+ *   NV_ERR_NOT_SUPPORTED
+ *   NV_ERR_OBJECT_NOT_FOUND
+ */
+#define NVC637_CTRL_EXEC_PARTITIONS_CREATE_PARAMS_MESSAGE_ID (0x1U)
+
+typedef struct NVC637_CTRL_EXEC_PARTITIONS_CREATE_PARAMS {
+    NvBool                           bQuery;
+    NvU32                            flags;
+    NvU32                            execPartCount;
+    // C form: NVC637_CTRL_EXEC_PARTITIONS_INFO execPartInfo[NVC637_CTRL_MAX_EXEC_PARTITIONS];
+    NVC637_CTRL_EXEC_PARTITIONS_INFO execPartInfo[NVC637_CTRL_MAX_EXEC_PARTITIONS];
+    // C form: NvU32 execPartId[NVC637_CTRL_MAX_EXECUTION_PARTITIONS];
+    NvU32                            execPartId[NVC637_CTRL_MAX_EXEC_PARTITIONS];
+} NVC637_CTRL_EXEC_PARTITIONS_CREATE_PARAMS;
+#define NVC637_CTRL_EXEC_PARTITIONS_DELETE_PARAMS_MESSAGE_ID (0x2U)
+
+typedef struct NVC637_CTRL_EXEC_PARTITIONS_DELETE_PARAMS {
+    NvU32 execPartCount;
+    NvU32 execPartId[NVC637_CTRL_MAX_EXEC_PARTITIONS];
+} NVC637_CTRL_EXEC_PARTITIONS_DELETE_PARAMS;
+
+#define NVC637_CTRL_CMD_EXEC_PARTITIONS_DELETE (0xc6370102) /* finn: Evaluated from "(FINN_AMPERE_SMC_PARTITION_REF_EXEC_PARTITIONS_INTERFACE_ID << 8) | NVC637_CTRL_EXEC_PARTITIONS_DELETE_PARAMS_MESSAGE_ID" */
+
+/*!
+ * NVC637_CTRL_EXEC_PARTITIONS_GET_PARAMS
+ *
+ * This command will return information about execution partitions which
+ * currently exist within the subscribed memory partition.
+ *
+ * execPartCount[OUT]
+ *      - Number of existing execution partitions
+ *
+ * execPartId[OUT]
+ *      - ID of existing execution partitions
+ *
+ * execPartInfo[OUT]
+ *      - Resources within each existing execution partition
+ *
+ * Possible status values returned are:
+ *   NV_OK
+ *   NV_ERR_NOT_SUPPORTED
+ */
+#define NVC637_CTRL_EXEC_PARTITIONS_GET_PARAMS_MESSAGE_ID (0x3U)
+
+typedef struct NVC637_CTRL_EXEC_PARTITIONS_GET_PARAMS {
+    NvU32                            execPartCount;
+    // C form: NvU32 execPartId[NVC637_CTRL_MAX_EXECUTION_PARTITIONS];
+    NvU32                            execPartId[NVC637_CTRL_MAX_EXEC_PARTITIONS];
+    // C form: NVC637_CTRL_EXEC_PARTITIONS_INFO execPartInfo[NVC637_CTRL_MAX_EXEC_PARTITIONS];
+    NVC637_CTRL_EXEC_PARTITIONS_INFO execPartInfo[NVC637_CTRL_MAX_EXEC_PARTITIONS];
+} NVC637_CTRL_EXEC_PARTITIONS_GET_PARAMS;
+
+#define NVC637_CTRL_CMD_EXEC_PARTITIONS_GET (0xc6370103) /* finn: Evaluated from "(FINN_AMPERE_SMC_PARTITION_REF_EXEC_PARTITIONS_INTERFACE_ID << 8) | NVC637_CTRL_EXEC_PARTITIONS_GET_PARAMS_MESSAGE_ID" */
+
+/*!
+ * NVC637_CTRL_EXEC_PARTITIONS_GET_ACTIVE_IDS
+ *
+ * This command will return IDs of all active execution partitions in a memory
+ * partition
+ *
+ * execPartCount[OUT]
+ *      - Number of existing execution partitions
+ *
+ * execPartId[OUT]
+ *      - ID of existing execution partitions
+ *
+ * execPartUuid[OUT]
+ *      - ASCII UUID string of existing execution partitions
+ *
+ * Possible status values returned are:
+ *   NV_OK
+ *   NV_ERR_NOT_SUPPORTED
+ */
+
+#define NVC637_UUID_LEN                     16
+#define NVC637_UUID_STR_LEN                 NV_MIG_DEVICE_UUID_STR_LENGTH
+
+typedef struct NVC637_EXEC_PARTITION_UUID {
+    // C form: char str[NVC638_UUID_STR_LEN];
+    char str[NVC637_UUID_STR_LEN];
+} NVC637_EXEC_PARTITION_UUID;
+
+#define NVC637_CTRL_EXEC_PARTITIONS_GET_ACTIVE_IDS_PARAMS_MESSAGE_ID (0x4U)
+
+typedef struct NVC637_CTRL_EXEC_PARTITIONS_GET_ACTIVE_IDS_PARAMS {
+    NvU32                      execPartCount;
+
+    // C form: NvU32 execPartId[NVC637_CTRL_MAX_EXECUTION_PARTITIONS];
+    NvU32                      execPartId[NVC637_CTRL_MAX_EXEC_PARTITIONS];
+
+    // C form: NVC637_EXEC_PARTITION_UUID execPartUuid[NVC637_CTRL_MAX_EXEC_PARTITIONS];
+    NVC637_EXEC_PARTITION_UUID execPartUuid[NVC637_CTRL_MAX_EXEC_PARTITIONS];
+} NVC637_CTRL_EXEC_PARTITIONS_GET_ACTIVE_IDS_PARAMS;
+
+#define NVC637_CTRL_EXEC_PARTITIONS_GET_ACTIVE_IDS               (0xc6370104) /* finn: Evaluated from "(FINN_AMPERE_SMC_PARTITION_REF_EXEC_PARTITIONS_INTERFACE_ID << 8) | NVC637_CTRL_EXEC_PARTITIONS_GET_ACTIVE_IDS_PARAMS_MESSAGE_ID" */
+
+/*
+ * NVC637_CTRL_CMD_EXEC_PARTITIONS_EXPORT
+ *
+ * Export the resource and placement information about an exec partition such
+ * that a similar partition can be recreated from scratch in the same position.
+ */
+#define NVC637_CTRL_CMD_EXEC_PARTITIONS_EXPORT                   (0xc6370105) /* finn: Evaluated from "(FINN_AMPERE_SMC_PARTITION_REF_EXEC_PARTITIONS_INTERFACE_ID << 8) | 0x5" */
+
+/*
+ * NVC637_CTRL_CMD_EXEC_PARTITIONS_IMPORT
+ *
+ * Create an exec partition resembling the exported partition info. The imported
+ * partition should behave identically with respect to fragmentation.
+ */
+#define NVC637_CTRL_CMD_EXEC_PARTITIONS_IMPORT                   (0xc6370106) /* finn: Evaluated from "(FINN_AMPERE_SMC_PARTITION_REF_EXEC_PARTITIONS_INTERFACE_ID << 8) | 0x6" */
+
+#define NVC637_CTRL_EXEC_PARTITIONS_EXPORT_MAX_ENGINES_MASK_SIZE 4
+typedef struct NVC637_CTRL_EXEC_PARTITIONS_EXPORTED_INFO {
+    NV_DECLARE_ALIGNED(NvU64 enginesMask[NVC637_CTRL_EXEC_PARTITIONS_EXPORT_MAX_ENGINES_MASK_SIZE], 8);
+    NvU8  uuid[NVC637_UUID_LEN];
+    NvU32 sharedEngFlags;
+    NvU32 gpcMask;
+    NvU32 gfxGpcCount;
+    NvU32 veidOffset;
+    NvU32 veidCount;
+    NvU32 smCount;
+    NvU32 spanStart;
+    NvU32 computeSize;
+    NvU32 execPartFlags;
+} NVC637_CTRL_EXEC_PARTITIONS_EXPORTED_INFO;
+
+typedef struct NVC637_CTRL_EXEC_PARTITIONS_IMPORT_EXPORT_PARAMS {
+    NvU32  id;
+    NV_DECLARE_ALIGNED(NVC637_CTRL_EXEC_PARTITIONS_EXPORTED_INFO info, 8);
+    NvBool bCreateCap;
+} NVC637_CTRL_EXEC_PARTITIONS_IMPORT_EXPORT_PARAMS;
+
+/*
+ * NVC637_CTRL_EXEC_PARTITION_PARTITION_SPAN
+ *
+ * This struct represents the span of a compute instance, which represents the
+ * resource slots a given partition occupies (or may occupy) within a fixed range which
+ * is defined per-chip. A partition containing more resources will cover more
+ * resource slots and therefore cover a larger span.
+ *
+ *   lo
+ *      - The starting unit of this span, inclusive
+ *
+ *   hi
+ *      - The ending unit of this span, inclusive
+ *
+ */
+typedef struct NVC637_CTRL_EXEC_PARTITION_PARTITION_SPAN {
+    NV_DECLARE_ALIGNED(NvU64 lo, 8);
+    NV_DECLARE_ALIGNED(NvU64 hi, 8);
+} NVC637_CTRL_EXEC_PARTITION_PARTITION_SPAN;
+
+/*
+ * NVC637_CTRL_EXEC_PARTITIONS_GET_PROFILE_CAPACITY
+ *
+ * This command returns the count of compute instances which can be created
+ * of the given commpute profile size (represented by the computeSize field
+ * within a profile) which can be requested via NV2080_CTRL_CMD_GPU_GET_COMPUTE_PROFILES
+ * Note that this API does not "reserve" any partitions, and there is no
+ * guarantee that the reported count of available partitions of a given size
+ * will remain consistent following creation of partitions of different size
+ * through NV2080_CTRL_GPU_SET_PARTITIONS.
+ * Note that this API is unsupported if SMC is feature-disabled.
+ * Note that the caller of this CTRL must be subscribed to a valid GPU instance
+ *
+ *   computeSize[IN]
+ *      - Partition flag indicating size of requested profile
+ *
+ *   profileCount[OUT]
+ *      - Available number of profiles of the given size which can currently be created.
+ *
+ *   availableSpans[OUT]
+ *      - For each profile able to be created of the specified size, the span
+ *        it could occupy.
+ *
+ *   availableSpansCount[OUT]
+ *      - Number of valid entries in availableSpans.
+ *
+ *   totalProfileCount[OUT]
+ *      - Total number of profiles of the given size which can be created.
+ *
+ *   totalSpans[OUT]
+ *      - List of spans which can possibly be occupied by profiles of the
+ *        given type.
+ *
+ *   totalSpansCount[OUT]
+ *      - Number of valid entries in totalSpans.
+ *
+ * Possible status values returned are:
+ *   NV_OK
+ *   NV_ERR_INVALID_ARGUMENT
+ *   NV_ERR_NOT_SUPPORTED
+ */
+#define NVC637_CTRL_CMD_EXEC_PARTITIONS_GET_PROFILE_CAPACITY (0xc63701a9U) /* finn: Evaluated from "(FINN_AMPERE_SMC_PARTITION_REF_EXEC_PARTITIONS_INTERFACE_ID << 8) | NVC637_CTRL_EXEC_PARTITIONS_GET_PROFILE_CAPACITY_PARAMS_MESSAGE_ID" */
+
+#define NVC637_CTRL_EXEC_PARTITIONS_GET_PROFILE_CAPACITY_PARAMS_MESSAGE_ID (0xA9U)
+
+typedef struct NVC637_CTRL_EXEC_PARTITIONS_GET_PROFILE_CAPACITY_PARAMS {
+    NvU32 computeSize;
+    NvU32 profileCount;
+    NV_DECLARE_ALIGNED(NVC637_CTRL_EXEC_PARTITION_PARTITION_SPAN availableSpans[NVC637_CTRL_MAX_EXEC_PARTITIONS], 8);
+    NvU32 availableSpansCount;
+    NvU32 totalProfileCount;
+    NV_DECLARE_ALIGNED(NVC637_CTRL_EXEC_PARTITION_PARTITION_SPAN totalSpans[NVC637_CTRL_MAX_EXEC_PARTITIONS], 8);
+    NvU32 totalSpansCount;
+} NVC637_CTRL_EXEC_PARTITIONS_GET_PROFILE_CAPACITY_PARAMS;
+
+/*
+ * NVC637_CTRL_CMD_GET_UUID
+ */
+#define NVC637_CTRL_CMD_GET_UUID (0xc63701aaU) /* finn: Evaluated from "(FINN_AMPERE_SMC_PARTITION_REF_EXEC_PARTITIONS_INTERFACE_ID << 8) | NVC637_CTRL_GET_UUID_PARAMS_MESSAGE_ID" */
+
+#define NVC637_CTRL_GET_UUID_PARAMS_MESSAGE_ID (0xAAU)
+
+typedef struct NVC637_CTRL_GET_UUID_PARAMS {
+    NvU8 uuid[NVC637_UUID_LEN];
+
+    char uuidStr[NVC637_UUID_STR_LEN];
+} NVC637_CTRL_GET_UUID_PARAMS;
+
+//  _ctrlc637_h_