Messages in this thread | | | Subject | Re: sata_nv + ADMA + Samsung disk problem | From | Benjamin Herrenschmidt <> | Date | Fri, 04 Jan 2008 08:13:06 +1100 |
| |
> 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.
| |