Re: USB stack

[Bill Hacker <wbh@xxxxxxxxxxxxx>]

Hasso Tepper wrote:
> Simon 'corecode' Schubert wrote:
> > Then devices should be probed and if there is a better match than ugen
> > and if the ugen device is not open, it should be detached from ugen and
> > attached to the new driver.  Do you think this would be possible?
>
> There is a lot of things that suck in USB stack all BSD's are using at the 
> moment. This particular one is one of smallest ones I worry about ;).
>
> There is a light though. There is a new USB stack known as HPS or usb4bsd 
> under development in FreeBSD. This particular problem is already resolved 
> there as well. Also two biggest problems with current stack - sucking 
> isochronous transfer support and sucking ugen.
>
> See these for details:
> http://www.turbocat.net/~hselasky/usb4bsd/
> http://perforce.freebsd.org/depotTreeBrowser.cgi?FSPC=//depot/projects/usb/src/sys/dev/usb
>
> Volunteers to port needed ;P.

Here is a just-discovered oddity to also look for - though I haven't 
tested it on a 'real' *BSD yet.

OS X 10.3.9 PowerBook 17" G4

- USB external kbd.

--  If directly attached to the PowerBook, kbd works when coming out of 
'sleep'.

-- If kbd is attached via an unpowered USB hub, it is ignored when 
coming out of 'sleep', and has to be unplugged/replugged (either 
kbd-to-hub or the hub-to-PowerBook.

This apparently relates to powering-down USB when sleeping, but I cannot 
fathom why there should be the difference exhibited once it awakens.

Anyone able to test for that on DFLY?

Bill