Re: sata_nv + ADMA + Samsung disk problem

[Benjamin Herrenschmidt]

> Another thing about the PacDigi core:  one has to be very careful
> to avoid sequential accesses to sequential PCI locations when
> programming the chip -- it cannot handle merged register writes.
> 
> So for any group of sequentially laid out registers, the code has
> to ensure it never writes two adjacent registers in sequence..

Ugh ? Write combining isn't permitted on normal registers afaik...

Ben.


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