Re: New USB stack on FreeBSD w/Linux emulation layer coming

Pete Zaitcev <[email protected]>
Newsgroups gmane.linux.usb.devel
Organization Red Hat, Inc.
Message-ID <[email protected]>
On Wed, 16 May 2007 16:52:53 +0200, Hans Petter Selasky <[email protected]> wrote:

> [...] Then you need to send specific 
> commands to the PCI-bridge, for example "pshyco". From what I see
> your model will not work in all cases.

USB through Psycho/Schizo is fully supported on Linux. Heck it works
better than the equivalent on x86_64, because there's no address range
limitation. The key is to set IOMMU at transfer time. Solaris defers
DMA setup as well (for what they call "streaming transfers").

-- Pete

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