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. --- userspace/lib/rpc_emulator.h | 53 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 userspace/lib/rpc_emulator.h (limited to 'userspace/lib/rpc_emulator.h') diff --git a/userspace/lib/rpc_emulator.h b/userspace/lib/rpc_emulator.h new file mode 100644 index 0000000..1b641bf --- /dev/null +++ b/userspace/lib/rpc_emulator.h @@ -0,0 +1,53 @@ +/* + * GSP vGPU-IO Userspace RPC Emulator - Header + */ + +#ifndef _RPC_EMULATOR_H_ +#define _RPC_EMULATOR_H_ + +#include +#include +#include "libvgpu.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* Emulation mode control */ +void rpc_emu_enable(bool enable); +bool rpc_emu_is_enabled(void); + +/* BAR Emulation */ +int rpc_emu_bar_config(uint32_t vf_id, uint64_t offset, uint64_t size); +int rpc_emu_bar_force_access(uint32_t vf_id, bool enable); +int rpc_emu_bar_save(uint32_t vf_id, void *buf, size_t *size); +int rpc_emu_bar_restore(uint32_t vf_id, const void *buf, size_t size); +int rpc_emu_bar_get_state(uint32_t vf_id, uint64_t *offset, uint64_t *size); + +/* WPR Emulation */ +int rpc_emu_wpr_protect_write(uint32_t vf_id, uint64_t base, uint64_t size); +int rpc_emu_wpr_protect_read(uint32_t vf_id, uint64_t base, uint64_t size); +int rpc_emu_wpr_protect(uint32_t vf_id, uint64_t base, uint64_t size, uint32_t flags); +int rpc_emu_wpr_unprotect(uint32_t vf_id, uint64_t base); +int rpc_emu_wpr_set_timeout(uint32_t vf_id, uint64_t timeout_ns); +int rpc_emu_wpr_check_access(uint32_t vf_id, uint64_t addr, uint32_t access_type); + +/* Scheduling Emulation */ +int rpc_emu_schedule(uint32_t vf_id, uint64_t work_handle, uint64_t callback, uint64_t arg, uint32_t priority, uint32_t flags); +int rpc_emu_yield(uint32_t vf_id); + +/* Notification Emulation */ +typedef void (*rpc_emu_notify_cb_t)(uint32_t vf_id, uint32_t type, void *data, size_t size, void *ctx); +int rpc_emu_notify_register(uint32_t vf_id, uint32_t type, rpc_emu_notify_cb_t cb, void *ctx); +int rpc_emu_notify_unregister(uint32_t vf_id, uint32_t type); +int rpc_emu_notify_send(uint32_t vf_id, uint32_t type, void *data, size_t size); + +/* Init/Fini */ +int rpc_emu_init(void); +void rpc_emu_fini(void); + +#ifdef __cplusplus +} +#endif + +#endif /* _RPC_EMULATOR_H_ */ -- cgit v1.2.3