From 2302fc09080bad51c73f293294e19fd4db464eb0 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/irq.h | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 kernel/include/irq.h (limited to 'kernel/include/irq.h') diff --git a/kernel/include/irq.h b/kernel/include/irq.h new file mode 100644 index 0000000..d06ac5b --- /dev/null +++ b/kernel/include/irq.h @@ -0,0 +1,45 @@ +#ifndef _NV_VGPU_IRQ_H_ +#define _NV_VGPU_IRQ_H_ + +#include "nvidia-vgpu-vfio.h" + +#define NV_VGPU_MAX_MSI_VECTORS 32 + +struct nv_vgpu_msi_irq { + int virq; + u32 vector; + bool enabled; + struct eventfd_ctx *trigger; + struct irq_domain *domain; + struct msi_msg msg; +}; + +struct nv_vgpu_irq_ctx { + struct nv_vgpu_device *vgpu; + struct mutex lock; + struct nv_vgpu_msi_irq msis[NV_VGPU_MAX_MSI_VECTORS]; + int msi_count; + bool msi_enabled; + bool msix_enabled; +}; + +int nv_vgpu_irq_init(struct nv_vgpu_device *vgpu); +void nv_vgpu_irq_cleanup(struct nv_vgpu_device *vgpu); + +int nv_vgpu_irq_enable(struct nv_vgpu_device *vgpu, int irq_idx); +int nv_vgpu_irq_disable(struct nv_vgpu_device *vgpu, int irq_idx); + +int nv_vgpu_irq_setup_msi(struct nv_vgpu_device *vgpu, int num_vectors); +int nv_vgpu_irq_setup_msix(struct nv_vgpu_device *vgpu, int num_vectors); +void nv_vgpu_irq_teardown_msi(struct nv_vgpu_device *vgpu); +void nv_vgpu_irq_teardown_msix(struct nv_vgpu_device *vgpu); + +int nv_vgpu_irq_set_trigger(struct nv_vgpu_device *vgpu, int irq_idx, int fd); +int nv_vgpu_irq_get_virq(struct nv_vgpu_device *vgpu, int irq_idx); + +static inline struct nv_vgpu_irq_ctx *vgpu_to_irq_ctx(struct nv_vgpu_device *vgpu) +{ + return (struct nv_vgpu_irq_ctx *)vgpu->irq_ctx; +} + +#endif \ No newline at end of file -- cgit v1.2.3