Ethernet on 5200 is using DMA?

[Mark Chambers]

I don't think it's possible to NOT use DMA on a 5200.  If your link
is 100Mbps and you are putting out something close to that then
90% is not unreasonable.  There are still memory copies involved.

Where is it getting the large file from?  Maybe IDE is a bottleneck.

Mark Chambers
wvcomputronics.com

----- Original Message ----- 
From: "Iñigo Lopez Barranco" <ilopez at albatros-sl.es>
To: <linuxppc-embedded at ozlabs.org>
Sent: Thursday, November 18, 2004 11:55 AM
Subject: Ethernet on 5200 is using DMA?


Hi. I'm using linuxppc_2_4_devel from Denx CVS on a Lite5200 board.
When doing "put" of a large file to a ftp server, ftp eats all the CPU
available (90%+). I suspect it's not using DMA for the ethernet. Is this
right?
Thanks in advance.

Iñigo
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