From 68cdd7728a7cc6715bbbff7decfe2b11c3bdf558 Mon Sep 17 00:00:00 2001 From: Open-IOV Date: Wed, 23 Sep 2026 05:44:08 -0400 Subject: 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. --- kernel/include/memory.h | 56 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 kernel/include/memory.h (limited to 'kernel/include/memory.h') diff --git a/kernel/include/memory.h b/kernel/include/memory.h new file mode 100644 index 0000000..07e57f2 --- /dev/null +++ b/kernel/include/memory.h @@ -0,0 +1,56 @@ +#ifndef _NV_VGPU_MEMORY_H_ +#define _NV_VGPU_MEMORY_H_ + +#include "nvidia-vgpu-vfio.h" + +#define NV_VGPU_MAX_MAPPINGS 1024 + +struct nv_vgpu_mapping { + u64 gpa; + u64 iova; + u64 size; + struct page **pages; + int page_count; + bool pinned; + bool mapped; + struct list_head list; +}; + +struct nv_vgpu_simple_mapping { + u64 gpa; + u64 size; + u64 iova; + struct page **pages; + int page_count; + bool pinned; + bool mapped; + struct list_head list; +}; + +struct nv_vgpu_mm_ctx { + struct nv_vgpu_device *vgpu; + struct mutex lock; + struct list_head mappings; + u32 mapping_count; + struct iommu_domain *iommu_domain; + struct dma_iommu_mapping *dma_mapping; + bool use_simple; +}; + +int nv_vgpu_memory_init(struct nv_vgpu_device *vgpu); +void nv_vgpu_memory_cleanup(struct nv_vgpu_device *vgpu); + +int nv_vgpu_memory_map(struct nv_vgpu_device *vgpu, u64 gpa, u64 size, u64 *iova); +int nv_vgpu_memory_unmap(struct nv_vgpu_device *vgpu, u64 iova, u64 size); + +int nv_vgpu_memory_pin(struct nv_vgpu_device *vgpu, u64 gpa, u64 size); +int nv_vgpu_memory_unpin(struct nv_vgpu_device *vgpu, u64 gpa, u64 size); + +int nv_vgpu_memory_mmap(struct nv_vgpu_device *vgpu, struct vm_area_struct *vma); + +static inline struct nv_vgpu_mm_ctx *vgpu_to_mm_ctx(struct nv_vgpu_device *vgpu) +{ + return vgpu->mm_ctx; +} + +#endif \ No newline at end of file -- cgit v1.2.3