by Hello!
I have this driver which let a SBus device access user-space
with DMA through physio, strategy and minphys++
Since minphys returns ~128kB on a sun4m (SS20), I'am forced
to split large DMA's into a lot of small transfers...
(the data accessed is scattered over a rather large area,
up to about 50MB)
I know there is a way by using bp_mapin/bp_mapout calls
to achieve up to ~30MB.
How do I do that? I can't make it work...
Anyone with examples, experience???
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