LSI Fusion-MPT Ultra320 SCSI, 2Gb Fibre Channel, and first-gen 3Gb SAS adapters
A family of LSI Logic (later Broadcom) storage host bus adapters built on the original Fusion-MPT architecture: Ultra320 parallel SCSI controllers, 2Gb Fibre Channel HBAs, and first-generation 3Gb/s SAS chips such as SAS1064, SAS1068, and SAS1078. Common in servers from the early 2000s to around 2010, before the line moved to SAS2008 silicon handled by mpt3sas.
recommendation
Worth keeping but documenting its niche: the hardware has not been sold new for over a decade and newer Broadcom SAS adapters are served by mpt3sas instead, yet the code is still seeing real bug-fix traffic on linux-scsi as recently as November and December 2025. That ongoing maintenance, combined with the likelihood that these controllers remain in long-lived enterprise and lab machines, makes outright deprecation premature, but a note explaining that this is the legacy first-generation Fusion-MPT branch would help future readers.
repository signals
sources
- lore.kernel.org
Recent substantive upstream maintenance exists: a late-2025 linux-scsi patch fixes bounds checking in mptbase reply paths.
- lore.kernel.org
The fusion driver directory still receives nontrivial tree updates in 2025, not just ancient carry-over code.
- cateee.net
LKDDb maps CONFIG_FUSION to old LSI/Broadcom Fusion-MPT controllers including Ultra320 SCSI, FC, and SAS1064/1068/1078-era devices.
- docs.broadcom.com
Broadcom's LSISAS1068 product brief describes this family as 8-port 3Gb/s SAS based on Fusion-MPT, indicating first-generation SAS silicon.
- docs.broadcom.com
Broadcom's LSISAS2008 brief calls that chip the second generation of Fusion-MPT SAS controllers, showing the in-tree fusion driver covers an older generation than later SAS2008-era hardware.
- cateee.net
LKDDb shows newer Fusion SAS 2.0/3.0 hardware is handled by mpt3sas, implying the fusion directory is the legacy branch of the product line rather than current shipping adapters.
codex reasoning notes (technical)
Confirmed as a real PCI storage/network adapter driver from local Kconfig/Makefile inspection. lore_file_timeline on drivers/message/fusion/mptbase.c yielded the two lore URLs above and showed activity through late 2025, so upstream attention is still real. Web search produced the LKDDb and Broadcom product-brief URLs: they place fusion on Ultra320/2Gb FC/3Gb SAS-era chips, while SAS2008 is explicitly second-generation and newer hardware moved to mpt3sas. That supports old-but-still-deployed hardware with low current deployment, not fresh 2025 sales. Chose keep-annotate over deprecate because active bug-fix traffic outweighs the hardware's age.