Internal support code inside the Nouveau driver stack for NVIDIA GPUs. The TOP subdevice reads the GPU's hardware topology/unit table on newer NVIDIA chips so the rest of Nouveau knows which engines (graphics, copy, video decode, etc.) are present and where their registers live.
This is not actually a driver directory; it is a small piece of plumbing inside Nouveau's NVKM core that probes the GPU's on-chip topology table. It only exists to support the main Nouveau driver and is not independently loadable or directly bound to any hardware, so it falls outside the scope of a keep/remove decision.
repository signals
5files
413source lines
6commits, 5y
+33 / −19lines added / removed, 5y
3authors, 5y
monthly commits · 2021-04-21 → 2026-04-21 · 6 total · active in 4/61 months
sources
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codex reasoning notes (technical)
Not a driver directory: internal nouveau NVKM TOP subdevice support code for GPU register/topology handling, not a standalone kernel-bound hardware driver.