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From: Hans Petter Selasky <hselasky@c2i.net>
To: "Olivier SMEDTS" <olivier@gid0.org>
Date: Sun, 14 Sep 2008 04:56:42 +0200
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Cc: freebsd-usb@freebsd.org
Subject: Re: new usb2 stack : -current patch with mpsafe tty layer available
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On Sunday 14 September 2008, Olivier SMEDTS wrote:
> 2008/9/14 Hans Petter Selasky <hselasky@c2i.net>:
> > What does:
> >
> > dd if=/dev/da0 of=/dev/null bs=65535
> >
> > Output for your memory stick?
>
> [2:24] root@q 173 ~# dd if=/dev/da0 of=/dev/null bs=65535
> dd: /dev/da0: Invalid argument
> 0+0 records in
> 0+0 records out
> 0 bytes transferred in 0.000040 secs (0 bytes/sec)
> [2:24] root@q 174 ~# dd if=/dev/da0 of=/dev/null bs=64K
> 15480+0 records in
> 15480+0 records out
> 1014497280 bytes transferred in 106.596679 secs (9517157 bytes/sec)
>
> I'm copying files to it (mount -t msdosfs) at a speed of 4MB/s.
>
>
> Is there a way to know which ports handle USB2.0 (EHCI), and devices
> wattage (like with the usbdevs command) ? Before usb2, I had the
> following kernel output :

Hi,

The wattage can be read from the device descriptor. See "bMaxPower" or 
something like that, which uses 2mA units.

I just added a "usbconfig" utility to my SVN repository. The output can 
probably be better and comments are welcome.

The companion printouts are gone :-(

--HPS