ixp4xx dmabounce

Krzysztof Halasa khc at pm.waw.pl
Thu Sep 24 12:51:50 EDT 2009

Brian Walsh <brian at walsh.ws> writes:

> I tried Krzysztof's patch and it had no noticeable affect.  I am still getting
> about 6.3 Mbps IP data throughput when only using the ohci controller and
> about 3.6 Mbps when the device is attached to the ehci controller.  This
> device works fine when running the same testing attached to an x86
> configured machine and gets about 18 Mbps IP data throughput.

I assume you've enabled CONFIG_ZONE_DMA_ALL_KERNEL :-)

Either the bouncing isn't the problem in this case, or the allocations
Krzysztof Halasa

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