[vbox-dev] PDM virtual PCI device bar size

José Massada jose.massada at gmail.com
Wed Apr 24 00:18:58 PDT 2013

I tried both but lately I've been testing with ICH9. Same behaviour.


On 24/04/2013, at 08:08, Nikolay Igotti <igotti at gmail.com> wrote:

>  Which chipset you are using? ICH9 generally shall be better suited for your needs, due to recent 
> PCI features support.
>   Nikolay
> 23.04.2013 18:25, José Massada пишет:
>> Hi all,
>> I'm working on a PDM virtual PCI device module and I need to have a bar size of 512MB.
>> This particular PCI device uses bar 0 and 1 for register blocks (64KB each) and bar 2 for memory (this one I need to be 512MB or even bigger).
>> Registering the memory bar using the MMIO2 functions fails when the size is bigger than 256MB (hard coded limit in the allocation function) so I tried registering using MMIO. It seems to work but my read and write callbacks never get called (bar 0 and 1 also use MMIO and their callbacks             always get called). I tried decreasing the bar 2 size and the callbacks got called.
>> Is this even possible without modifying VBox source code? What am I missing?
>> Thanks,
>> Jose
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>> vbox-dev at virtualbox.org
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