[ECOS]Strange behavior of rltk8139 chip

Gary Thomas gary@mlbassoc.com
Fri Aug 27 15:08:00 GMT 2004


On Fri, 2004-08-27 at 08:41, jerzy dyrda wrote:
> Hi all,
> I find abnormal behavior of chip  which corrupts eth driver. In receive, 
> driver poll flag buffer empty and when buffer is not empty read receive 
> packet header form  receive buffer. But after is last frame red, flag buffer 
> empty was false and driver try read next packet ( but that was no data ) and 
> lost synchronization. I add one more condition - I compare read and write 
> pointer of receive buffer from chip registers.
> Any similar  experience?

Sounds like a cache issue.  Make sure that your PCI space and the memory
used by the board are not cached.

-- 
Gary Thomas <gary@mlbassoc.com>
MLB Associates


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