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, 75 insertions, 0 deletions

diff --git a/kernel/include/migration.h b/kernel/include/migration.h
new file mode 100644
index 0000000..17cf8db
--- /dev/null
+++ b/kernel/include/migration.h
@@ -0,0 +1,75 @@
+#ifndef _NV_VGPU_MIGRATION_H_
+#define _NV_VGPU_MIGRATION_H_
+
+#include "nvidia-vgpu-vfio.h"
+
+#define NV_VGPU_MIGRATION_MAGIC 0x4E564750
+#define NV_VGPU_MIGRATION_VERSION 1
+
+struct nv_vgpu_migration_ctx {
+	struct nv_vgpu_device *vgpu;
+	struct mutex lock;
+	struct nv_vgpu_migration_state state;
+	struct task_struct *save_thread;
+	struct task_struct *restore_thread;
+	bool in_progress;
+};
+
+struct nv_vgpu_migration_header {
+	u32 magic;
+	u32 version;
+	u32 flags;
+	u32 num_sections;
+	u64 total_size;
+	u64 timestamp;
+};
+
+enum nv_vgpu_migration_section_type {
+	NV_VGPU_MIG_SECTION_DEVICE_STATE = 0x01,
+	NV_VGPU_MIG_SECTION_BAR_STATE = 0x02,
+	NV_VGPU_MIG_SECTION_MEMORY_STATE = 0x03,
+	NV_VGPU_MIG_SECTION_IRQ_STATE = 0x04,
+	NV_VGPU_MIG_SECTION_GSP_STATE = 0x05,
+	NV_VGPU_MIG_SECTION_ENGINE_STATE = 0x06,
+	NV_VGPU_MIG_SECTION_CHANNEL_STATE = 0x07,
+	NV_VGPU_MIG_SECTION_CONTEXT_STATE = 0x08,
+};
+
+struct nv_vgpu_migration_section {
+	u32 type;
+	u32 flags;
+	u64 offset;
+	u64 size;
+	u32 checksum;
+};
+
+struct nv_vgpu_migration_device_state {
+	u32 vgpu_type;
+	u32 vgpu_id;
+	u32 gpu_instance_id;
+	u32 compute_instance_id;
+	u32 state;
+	u64 fb_base;
+	u64 fb_size;
+	u64 bar0_config_base;
+};
+
+struct nv_vgpu_migration_bar_state {
+	u32 bar_index;
+	u64 gpa;
+	u64 size;
+	u64 iova;
+	u8 data[];
+};
+
+int nv_vgpu_migration_init(struct nv_vgpu_device *vgpu);
+void nv_vgpu_migration_cleanup(struct nv_vgpu_device *vgpu);
+
+int nv_vgpu_migration_save_state(struct nv_vgpu_device *vgpu, u8 **data, size_t *size);
+int nv_vgpu_migration_restore_state(struct nv_vgpu_device *vgpu, u8 *data, size_t size);
+
+int nv_vgpu_migration_prepare(struct nv_vgpu_device *vgpu);
+int nv_vgpu_migration_complete(struct nv_vgpu_device *vgpu);
+int nv_vgpu_migration_cancel(struct nv_vgpu_device *vgpu);
+
+#endif
\ No newline at end of file