Accessing Memory Address

[theFloe]

Hi,

Here and on OpenWRT-Forum I found the info's about the 20pin connector on the WL-HDD. I do not want to add a UART but a custom parall interface to that connector. I read that the address is from 0xBF800000 to 0xBF80000F. I want to add some display and keys here to have the box displaying artitst and title of the track mpd is currentliy playing via a usb soundcard and some keys to control volumne and to navigate.

But how can I access that location to read and write data?
I tried using /dev/port and lseeking to the location.
Outb / Inb failed because when including <asm/io.h> results in a long error list.

Is that address normal address space or via pci?

Please help and maybe you can tell me?
Thanks, Tobias