vremap question

[Gilles Pokam <pokam@cs.tu-berlin.de>]

Hi,

Are there some restrictions on the use of vremap ?

I am trying to map 1MB of my PCI-device memory into kernel space. Having the base
i/o address and the span of my device memory i use the ioremap function like this:
 virt = ioremap_nocache(base_io,size);

my device memory is subdivided like this: 216kb of unused memory,216kb of prom,128kb 
register,128kb fpga and 216kb of sram. After the ioremap call, i can access the prom
region, but any attempt to read or write the sram,register or fpga region yields 0x0!

can someone tell me what is wrong ?

Thanks.

 
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