ethtool failure with tulip 21143

Benjamin Herrenschmidt benh at
Mon Dec 17 10:38:53 EST 2001

>A long time ago (2.2.13 or so), I could not use another card on the
>6500 for very long with the de4x5 driver as well. At that time, Paul
>provided a patch for the de4x5 driver which fixed the problem. He
>also described the issue as a cache coherency problem.

Yes, paul's patch is what I'm talking about.

>Well, I wonder if that was the fix that Paul put in. Some time ago
>(early 2.4) I tried the de4x5 driver with this Farallon 10/100 card
>but it worked even more poorly than the tulip driver of that time did.

>>Try defining CACHE_ALIGN to CAL_32LONG, and DESC_ALIGN to u32 dummy[4]
>>(as in the commented out example).
>I will look at the de4x5 code again and try this. It's all vaguely
>familiar to me... Thanks much!

That should be the same patch paul did.


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