Memory mapped IO

[Bas Benschop <b.benschop@tn.utwente.nl>]

Maybe this question is off-topic, but I'm quite new in both rtl and
C-programming. I have a SBS-greenspring carrier board with an DAC
module. This board is completely memory mapped. I can get the memory
location it uses with the pci functions, but when I try to look at this
location I get a segmentation fault. So I need a function to tell the
kernel that I want so much memory at that location. How to do such a
thing?

Thanks in advance,

Bas Benschop
Faculty of Applied Physics
University of Twente
The Netherlands