drivers/net/wireless/quantenna/qtnfmac/pcie · keep-annotate

Quantenna QSR1000/QSR10G PCIe Wi-Fi adapters

PCIe Wi-Fi cards built around Quantenna's QSR1000 (Topaz) and QSR10G (Pearl) 802.11ac chipsets, used mainly inside high-end home routers and gateways from the mid-2010s until Quantenna was acquired by ON Semiconductor in 2019. The chips handle most Wi-Fi work on-die, with the host loading firmware images fmac_qsr1000.img and fmac_qsr10g.img.

keep-annotate conf=0.67 last_sold=2021 deploy=low replacement=none subsystem=net category=networking-wireless

67%

recommendation

Worth keeping but flagging as niche: the chips are no longer sold as a standalone product line and deployments today are thin, but upstream has not abandoned the code. A driver-specific fix landed in March 2024, and it was carried along by treewide wireless API changes in 2022, so users of surviving Quantenna-based gear still have a working in-tree driver. Documenting its legacy status would set expectations without disrupting that small base.

repository signals

8 files

3,360 source lines

6 commits, 5y

+51 / −45 lines added / removed, 5y

4 authors, 5y

monthly commits · 2021-04-21 → 2026-04-21 · 6 total · active in 6/61 months

sources

lore.kernel.org
qtnfmac PCIe still received a driver-specific fix in 2024, so upstream attention is sparse but not dead.
lore.kernel.org
The PCIe path was also touched by wireless-next treewide API updates in 2022; no removal discussion is evident from the sampled lore history.
git.kernel.org
Upstream source names the firmware images as qtn/fmac_qsr1000.img and qtn/fmac_qsr10g.img, identifying the supported hardware family as Quantenna QSR1000 and QSR10G.
en.wikipedia.org
Quantenna was acquired in 2019; combined with the lack of an obvious current standalone product line, this points to legacy/niche deployment rather than broad new 2025 sales.

codex reasoning notes (technical)

Real driver directory: local `rg` showed PCIe driver code and firmware IDs in qtn_hw_ids.h. `lore_file_timeline` on the directory returned no direct path hits; `lore_activity` on pearl_pcie.c/topaz_pcie.c produced 2024 and 2022 maintenance URLs and no removal-series evidence in the sampled history. Kernel tree URL is canonical recall; Wikipedia URL is canonical recall and used only as supporting context for vendor/product legacy status. Recommendation is keep-annotate because hardware looks legacy/niche, but lore still shows occasional upstream fixes rather than abandonment or active removal.