linux-kernel - Re: PCI Bursting with PIO

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Message-ID: <p73abm21ocl.fsf@bingen.suse.de>
Date:	Fri, 15 Feb 2008 11:54:50 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	"Dan Gora" <dan.gora@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: PCI Bursting with PIO

"Dan Gora" <dan.gora@...il.com> writes:
>
> Is there any way to get PIO 

I assume you really mean MMIO, not PIO. PIO would be port IO.

> to burst over the PCI bus in the read and
> write direction? 

You should set the MMIO mapping to write combining using an MTRR
You might need to add appropiate memory barriers if you rely
on write ordering though.

-Andi
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