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- Firmware Analyzer: Runtime firmware signature computation (CRC32, SHA256) and pattern-based RPC handler address discovery
- Dynamic RPC Dispatcher: Version-aware dispatch with native firmware handlers (550/560/570/580) and emulation fallback
- Hardware Architecture Layer: Turing, Ampere, Blackwell configs with BAR layouts, doorbell offsets, MSI-X vectors
- Driver Version Adaptation Layer: Feature detection per driver version
- Declarative YAML configs for hardware (turing/ampere/blackwell) and versions (550/560/570/580)
- Kernel unit tests for GSP emulation (gsp_emulation_test.c)
- Test infrastructure scripts (test_gsp_emu.sh, test_guest_driver.sh, test_cuda_workloads.sh, test_graphics_workloads.sh, test_windows_guest.sh, test_vgpu_stack.sh)
- Updated kernel Makefile with new source files
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- Enhanced gsp_rpc_client.c with proper emulation implementations:
- ALLOC/FREE: VRAM allocation tracking with host page allocation and DMA mapping
- MAP/UNMAP: GPU VA mapping management
- PIN/UNPIN: DMA address retrieval for pinned pages
- SCHEDULE/YIELD: Local workqueue-based scheduling
- NOTIFY: Callback registration for async events
- Added emulation function declarations to gsp_rpc_client.h
- Exported nv_vgpu_simple_mapping struct in memory.h for cross-file use
- Updated RPC handlers to use gsp_rpc_emulation_is_enabled() accessor
- All 12 RPC types now have functional emulation fallbacks
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- Enhanced PCI config space write handlers in main.c:
- Added MSI-X Message Control (0x72-0x73) write support
- Added MSI-X Table Offset/BIR (0x74-0x77) write support
- Added MSI-X PBA Offset/BIR (0x78-0x7B) write support
- Enhanced BAR emulation in bar_emulation.c:
- Added MSI-X Table emulation (32 entries at BAR0+0x2000)
- Added MSI-X PBA emulation (64-bit at BAR0+0x3000)
- Added nv_vgpu_msix_set_pending/clear_pending for interrupt injection
- Integrated with GSP emulation constants from gsp_emulation.h
- Updated bar_emulation.h with MSI-X struct definitions and function declarations
- Added GSP emulation constants to gsp_emulation.h (MSIX offsets, polling params)
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- New kernel/gsp_emulation.h: GSP emulation context and API
- New kernel/gsp_emulation.c: Per-mdev emulation thread with:
- Adaptive polling of doorbell at BAR0+0x110C00
- Shared memory RPC processing (4KB at BAR0+0x1000)
- Dispatch for all 12 RPC types via firmware-decompiled handlers
- MSI-X completion interrupt injection via eventfd
- Statistics tracking (processed/failed RPCs, latency)
- Modified kernel/main.c: Integrate gsp_emu_init/cleanup in device lifecycle
- Modified kernel/Makefile: Add gsp_emulation.o to build
- Modified kernel/gsp_rpc_client.h: Export gsp_rpc_emulation_set/is_enabled
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- 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
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