CPU Cache and busdma usage in USB

[Piotr Zięcik]

Wednesday 08 July 2009 12:30:46 Sebastian Huber napisał(a):
> Device to memory DMA transfer of a buffer:
> (...)
> 3. all accesses to the buffer via the cache must wait until the DMA has
> finished

And this is the problem in my oppinion - USB stack does not wait.

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Best Regards.
Piotr Zięcik