PCI Express and drivers

[Daniel O'Connor]

On 06/07/2010, at 5:32, Christopher Bowman wrote:
> If I could, let me ask another question.  My device could potential have up to 6 BARs, that would be mapped into user space.  Should I simply bundle them together in my driver into one contiguous space or should I make the user perform multiple mmap calls?  If I go the multiple mmap route, how do I match a mmap call to a particular BAR?  Do I use the size of the allocation?

Yes, I think you just key off the requested address in the mmap() call.

--
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
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