Looking around at stale code (I'm weird), I see this sbusmem driver that
seems to support a simple read/write function and devmap. No block
device support, and most likely of limited value. I can't seem to find
any use for it, and the sbus systems I can log into don't seem to
actually have one of the necessary devices.
I'm wondering if this is another legacy RAM expansion device from the
old 32-bit sun4c/4m days that perhaps we can just remove?
Can anyone else enlighten me here? Is there some function that this
thing still serves that I'm not aware of.
(Yes, "sbus" systems are still in use... Sunfire/Campfire and Starfire
systems are all Sbus, and there may be folks with Ultra-2's still using
it as well.)
- Garrett
