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Writing a Rust GPU kernel driver: a brief introduction on how GPU drivers work

18 days ago
https://www.collabora.com/news-and-blog/blog/2025/08/06/writing-a-rust-gpu-kernel-driver-a-brief-introduction-on-how-gpu-drivers-work/
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  • #Rust
  • #Linux Kernel
  • #GPU Drivers
  • Introduction to Tyr, a Rust GPU driver for Linux supporting Arm Mali CSF-based GPUs.
  • Exploration of GPU drivers using the VkCube application, which renders a rotating cube using Vulkan.
  • Explanation of User Mode Drivers (UMD) and Kernel Mode Drivers (KMD) in GPU driver architecture.
  • Overview of the API offered by Tyr, mirroring Panthor's API for the same hardware.
  • Key responsibilities of KMD include memory allocation, work submission, and device initialization.
  • Discussion on the complexity residing in UMD for translating high-level API commands to GPU-understandable commands.
  • Formal definition of the KMD interface, including device information, memory allocation, job submission, and tiler heap management.
  • Future exploration of CSF architecture and MCU in upcoming series installments.
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