Open-IOV: initial public release

Open-IOV virtualizes NVIDIA GPUs so that unmodified guest drivers run with
real GPU functionality - CUDA first, 3D and video to follow - on unmodified
hosts, without a proprietary vGPU license and without patching any driver,
firmware or hypervisor.

Core principle: emulate the interface, pass through the work.

  kernel/     open-iov-vfio.ko - host VFIO mdev driver: virtual GPU device
              (PCI config space, BAR shadows, MSI-X), GSP boot emulation,
              GSP-RM message-queue/RPC emulation, memory model (GPU-VA to
              guest-PA discovery) and the semaphore-completion service that
              advances guest UVM progress.
  userspace/  libiov.so management API and examples.
  tools/      guest diagnostics, firmware analysis wrappers, RM probes.
  scripts/    stack manager, VM harness, build/load/test automation.
  config/     hardware/version profiles (the portability surface).
  docs/       documentation tree - start at docs/README.md.
  wiki/       long-form firmware and protocol deep dives.

Status: initialization works end to end for a stock 570.144 Linux guest on
Turing (TU104): driver probe, nvidia-smi, the full GSP-RM control battery,
object creation and the early CUDA/UVM start-up path. GPU work forwarding -
the step that makes CUDA kernels execute on real hardware - is the active
work item; see docs/04-implementation/01-known-knowns-and-unknowns.md.

License: BSD-3-Clause for the project; GPL-2.0 for kernel modules that link
GPL-only kernel interfaces. See LICENSE and docs/09-reference/legal-and-licensing.md.

1 files changed, 57 insertions, 0 deletions

diff --git a/scripts/load_vgpu_stack.sh b/scripts/load_vgpu_stack.sh
new file mode 100755
index 0000000..fcabb06
--- /dev/null
+++ b/scripts/load_vgpu_stack.sh
@@ -0,0 +1,57 @@
+#!/bin/bash
+# load_vgpu_stack.sh - Load complete vGPU driver stack
+# Usage: ./load_vgpu_stack.sh [firmware_name]
+
+set -euo pipefail
+
+FIRMWARE_NAME="${1:-gsp-570.144.fwimage.bin}"
+
+BASE_DIR="${OPEN_IOV_ROOT:-$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)}"
+NVIDIA_KO="$BASE_DIR/nvidia-open-gpu-kernel-modules/kernel-open/nvidia.ko"
+VFIO_KO="$BASE_DIR/kernel/open-iov-vfio.ko"
+FIRMWARE_PATH="$BASE_DIR/firmware/57X-GSP/570.144/$FIRMWARE_NAME"
+
+echo "=========================================="
+echo "Loading vGPU Driver Stack (Refactored: Host-only GSP Emulation)"
+echo "=========================================="
+echo "Firmware: $FIRMWARE_NAME"
+echo ""
+
+# Check files exist
+for f in "$NVIDIA_KO" "$VFIO_KO" "$FIRMWARE_PATH"; do
+    if [[ ! -f "$f" ]]; then
+        echo "ERROR: Missing file: $f"
+        exit 1
+    fi
+done
+
+# Load open-iov-vfio.ko FIRST (provides symbols nvidia.ko needs)
+if lsmod | grep -q "^open_iov_vfio "; then
+    echo "open-iov-vfio.ko already loaded"
+else
+    echo "Loading open-iov-vfio.ko..."
+    sudo insmod "$VFIO_KO"
+    echo "  OK"
+fi
+
+# Check if already loaded
+if lsmod | grep -q "^nvidia "; then
+    echo "nvidia.ko already loaded"
+else
+    echo "Loading nvidia.ko (OpenRM)..."
+    sudo insmod "$NVIDIA_KO"
+    echo "  OK"
+fi
+
+echo ""
+echo "=========================================="
+echo "Driver Stack Loaded Successfully"
+echo "=========================================="
+lsmod | grep -E "nvidia|open_iov"
+echo ""
+echo "Device nodes:"
+ls -la /dev/nvidia* 2>/dev/null || echo "  (none yet - create mdev first)"
+echo ""
+echo "Next steps:"
+echo "  1. Create mdev: $BASE_DIR/scripts/create_mdev.sh"
+echo "  2. Launch QEMU: $BASE_DIR/scripts/launch_qemu_vgpu.sh"
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