On Fri, Sep 16, 2016 at 08:11:45AM +1000, Benjamin Herrenschmidt wrote: > On Thu, 2016-09-15 at 14:45 +0200, Cédric Le Goater wrote: > > - The PCB translation is too much of a constraint for a specific > > XSCOM address space, unless someone can explain me how to address 8 > > bytes at 0xb0021 and another 8 different bytes at 0xb0022. I don't > > think the address space and the memory regions were designed with > > this in mind. Please advise ! > > I'd say just dispatch pcb_addr << 3 to the memory regions (which is > also the P9 translation iirc).
Yes, I think that's the way to go.
That also means on P9 you can potentially just map the scom address
space directly into address_space_memory, instead of requiring a
redispatcher to do the address mangling.
> Just add a quirk to the ADU/XSCOM dispatch object to do the additional
> unmangling needed on P7/P8
>
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
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