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Date: Fri, 06 Jul 2012 01:36:15 +0200
From: Aragon Gouveia <aragon@phat.za.net>
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Subject: debugging failed USB3 device attachment
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Hi,

I have some hardware with a USB3 controller that is detected by xhci(4), 
but when I try attach a USB3 device, it fails to attach to a USB3 bus, 
and after timing out it connects to a USB2 bus.  Here's a verbose dmesg 
with xhci debugging enabled from when I plug the device in:

http://pastebin.com/nM8nQFg3

I've captured xhci(4)'s verbose boot time dmesg output here:

http://pastebin.com/EA3k7RLE

The full verbose boot dmesg is at:

http://pastebin.com/Y0qKiDZg

And a regular boot dmesg is at:

http://pastebin.com/e3tS8eS4

I've tried tweaking a handful of BIOS options like XHCI handoff and USB 
transfer timeout thresholds, but nothing seems to help.  Have already 
upgraded to the latest BIOS available too.  This FreeBSD 9.0-STABLE 
build is about 1 week old.

Any help greatly appreciated!


Thanks,
Aragon