From 00e54c13c7c9030c4d5f7151467f2d85a3730e29 Mon Sep 17 00:00:00 2001
From: Arthur Hanson Rasmusson <arthur@vgpu.io>
Date: Sun, 13 Sep 2026 18:36:21 -0400
Subject: 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
---
 tools/vm/setup_mdev.sh | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100755 tools/vm/setup_mdev.sh

(limited to 'tools/vm/setup_mdev.sh')

diff --git a/tools/vm/setup_mdev.sh b/tools/vm/setup_mdev.sh
new file mode 100755
index 0000000..ef31f46
--- /dev/null
+++ b/tools/vm/setup_mdev.sh
@@ -0,0 +1,65 @@
+#!/bin/bash
+# Setup script for NVIDIA vGPU mdev device
+# This script creates an mdev device for QEMU testing
+
+set -euo pipefail
+
+GPU_PCI_ADDR="${GPU_PCI_ADDR:-0000:01:00.0}"
+VGPU_TYPE="${VGPU_TYPE:-nvidia-vgpu-turing}"
+MDEV_UUID="${MDEV_UUID:-$(cat /proc/sys/kernel/random/uuid)}"
+
+MDEV_CREATE_PATH="/sys/bus/pci/devices/$GPU_PCI_ADDR/mdev_supported_types/$VGPU_TYPE/create"
+
+echo "=== NVIDIA vGPU mdev Device Setup ==="
+echo "GPU PCI: $GPU_PCI_ADDR"
+echo "VGPU Type: $VGPU_TYPE"
+echo "MDEV UUID: $MDEV_UUID"
+echo ""
+
+# Check if GPU device exists
+if [[ ! -d "/sys/bus/pci/devices/$GPU_PCI_ADDR" ]]; then
+    echo "ERROR: GPU device $GPU_PCI_ADDR not found"
+    echo "Available NVIDIA GPUs:"
+    lspci -nn -d 10de: | grep -E "VGA|3D"
+    exit 1
+fi
+
+# Check if mdev_supported_types exists (requires NVIDIA vGPU host driver)
+if [[ ! -d "/sys/bus/pci/devices/$GPU_PCI_ADDR/mdev_supported_types" ]]; then
+    echo "ERROR: mdev_supported_types not found for $GPU_PCI_ADDR"
+    echo ""
+    echo "This requires the NVIDIA vGPU host driver (licensed product for data center GPUs)."
+    echo "The regular NVIDIA driver does not provide vGPU mdev support."
+    echo ""
+    echo "For testing on consumer GPUs (TU104, etc.), use dry-run mode:"
+    echo "  sudo insmod /path/to/nvidia-vgpu-vfio.ko dry_run=1"
+    echo ""
+    echo "In dry-run mode, the module loads but cannot create real mdev devices."
+    exit 1
+fi
+
+# Check if requested vGPU type exists
+if [[ ! -d "/sys/bus/pci/devices/$GPU_PCI_ADDR/mdev_supported_types/$VGPU_TYPE" ]]; then
+    echo "ERROR: vGPU type $VGPU_TYPE not supported"
+    echo "Available types:"
+    ls "/sys/bus/pci/devices/$GPU_PCI_ADDR/mdev_supported_types/"
+    exit 1
+fi
+
+# Create mdev device
+echo "Creating mdev device..."
+echo "$MDEV_UUID" | sudo tee "$MDEV_CREATE_PATH" > /dev/null
+
+if [[ -d "/sys/bus/mdev/devices/$MDEV_UUID" ]]; then
+    echo "SUCCESS: mdev device created at /sys/bus/mdev/devices/$MDEV_UUID"
+    echo ""
+    echo "Device info:"
+    cat "/sys/bus/mdev/devices/$MDEV_UUID/description" 2>/dev/null || echo "  (no description)"
+    echo ""
+    echo "To use with QEMU:"
+    echo "  export MDEV_UUID=$MDEV_UUID"
+    echo "  /path/to/launch_vgpu_qemu.sh"
+else
+    echo "ERROR: Failed to create mdev device"
+    exit 1
+fi
-- 
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