Hi Mariusz,

As far as I know there is no difference in 1) and 2) between 32 and 64 bits 
modes. But you can't mmap() more than the function can. So that 3) depends 
on a base address.

-- 
Respectfully,
Oleg

> Hi,
> 
> I have to obtain access to registers of the device, that is located on
> PCI 64-bit memory space. Do I have to do same special operations? By
> now I did following steps:
> 1) found device using _CA_PCI_Find_Device();
> 2) read off the device's base address from its pci configuration space;
> 3) mapped the device memory space using mmap() function.
> 
> Are above mentioned operations correct?
> Is any difference between device mapping from 32-bits PCI memory space
> and 64-bit memory space?
> 
> Best Rgds
> Mariusz
> 
> 
> 
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