DMA and cache coherency ???

[Jim DiFronzo]

You probably already know this, but the 82559ER also has a different PCI
device ID.  You'll need to edit PCI.h and the eepro100.c code to reference
it.  The new device ID is 0x1209, rather than the 0x1229 of the 82557-9
chipsets.

Jim
----- Original Message -----
From: "Stuart Adams" <sja@brightstareng.com>
To: <linux-eepro100@beowulf.gsfc.nasa.gov>
Sent: Thursday, February 10, 2000 11:27 PM
Subject: DMA and cache coherency ???


>
>  We are trying to get the 82559ER Linux driver working
>  on our non-x86 embedded system. How is the issue of
>  cache coherency handled ? I did not see anything in
>  the driver to address this. Since the 82559 will
>  DMA data directly to memory, one needs to invalidate
>  the cache lines associated with the memory buffers
>  used by the 82559 correct ???
>
> Thanks,
>   Stuart


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