On 19 January 2015 at 12:57, Artyom Tarasenko <atar4q...@gmail.com> wrote: > But out of curiosity, would it be possible to have a sysbus device > somewhere in a middle of PCI space? Do sysbus devices have higher > priority if the address spaces overlap? Or do you mean that the PCI > controller needs to be modified to have a hole for a sysbus device?
You can specify the priority when you map devices into a MemoryRegion, so you can handle this by either making the sysbus device a positive priority or by making the PCI window have a negative priority. (We don't actually get this right on x86 currently, which has resulted in some awkwardness for the PPC desire to make PCI address 0 valid.) -- PMM
