Messages in this thread | | | Date | Fri, 15 Feb 2008 09:55:24 -0800 | From | "Dan Gora" <> | Subject | Re: PCI Bursting with PIO |
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On Fri, Feb 15, 2008 at 2:54 AM, Andi Kleen <andi@firstfloor.org> wrote: > "Dan Gora" <dan.gora@gmail.com> writes: > > > > Is there any way to get PIO > > I assume you really mean MMIO, not PIO. PIO would be port IO.
Sorry, I always saw it referred to as "Programmed I/O" as opposed to DMA...
> You should set the MMIO mapping to write combining using an MTRR
Sorry to be thick here, but how would I go about doing that?
> You might need to add appropiate memory barriers if you rely > on write ordering though.
Ok, thanks for the info...
dan
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