Ive just bought a great Philips USB 2.0 controller from Digikey...
Fine. As Chris wrote, we have a working prototype including Poseidon drivers, both PIO and DMA.
I can just give you the hint that you will need more than "it does not get hot anymore when being powered, so it works now" to get it working stable. Especially the DMA engine... well, you will find out soon enough for yourself :-)
Good luck.
Michael