2.5.42 module tmscsi

Hi,
I am not able to compile the driver tmscsim.c for my Tekram DC-390 adapter. It seems that some porting from the 2.4.x kernels has to be done (see scsiiom.c and Documentation/DMA
-mapping.txt). Is there someone working on that? If not, are there some good starting
points to do it myself?

Constantin