Phillip Dillinger (Phillip.Dillinger@sealabs.com)
Wed, 27 Nov 1996 10:05:49 -0800


Does anyone know about bus mastering on the 3com 3c59x or 3c900 cards? When
I enable bus mastering in the driver, as opposed to PIO, the data rate
delivered to the card goes way down. As far as I can see, the kernel is
taking about 10ms waiting for the DMA to finish for each transfer. I have
heard of other people getting close to 100Mbps on this card, but either due
to my kernel, 2.0.23, or my hardware, a Fugu P100, the bus mastering does
not seem to work right.

Any help or info is greatly appreciated.

Sincerely, Phillip Dillinger