DragonFly users List (threaded) for 2008-01
DragonFly BSD
DragonFly users List (threaded) for 2008-01
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Re: USB stack

From: Bill Hacker <wbh@xxxxxxxxxxxxx>
Date: Wed, 16 Jan 2008 19:16:03 +0000

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:

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?


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