debugging failed USB3 device attachment

[Aragon Gouveia]

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


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[Hans Petter Selasky]

On Friday 06 July 2012 01:36:15 Aragon Gouveia wrote:

> 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!
>

Hi,

There is some magic to switch USB ports to USB 3.0 which is not in FreeBSD
yet. They have it in Linux, and you might be able to port that code to BSD and
try.

Also, can you post output from "pciconf -lv" ?

--HPS
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[Aragon Gouveia]

Hi Hans,

On 07/06/12 08:54, Hans Petter Selasky wrote:
> There is some magic to switch USB ports to USB 3.0 which is not in FreeBSD
> yet. They have it in Linux, and you might be able to port that code to BSD and
> try.

I know some C, but very little on USB architecture.  I'm curious enough
to try, but a bit more direction would be helpful if you can spare some. :)


> Also, can you post output from "pciconf -lv" ?

Sure, and pardon my delay:

http://pastebin.com/Gxgv7W2F

BTW, is this behaviour BIOS related?  I recently setup another machine
that had Intel's Z77 USB3 controller, and I don't remember having these
issues when attaching the same USB3 device...


Thanks,
Aragon

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[Hans Petter Selasky]

On Sunday 08 July 2012 01:21:51 Aragon Gouveia wrote:
> Hi Hans,
>
> On 07/06/12 08:54, Hans Petter Selasky wrote:
> > There is some magic to switch USB ports to USB 3.0 which is not in
> > FreeBSD yet. They have it in Linux, and you might be able to port that
> > code to BSD and try.
>
> I know some C, but very little on USB architecture.  I'm curious enough
> to try, but a bit more direction would be helpful if you can spare some. :)

>
> > Also, can you post output from "pciconf -lv" ?
>
> Sure, and pardon my delay:
>
> http://pastebin.com/Gxgv7W2F
>
> BTW, is this behaviour BIOS related?  I recently setup another machine
> that had Intel's Z77 USB3 controller, and I don't remember having these
> issues when attaching the same USB3 device...
>

Hi,

XHCI is very new, and there might be hardware differences out there.

BTW: The USB 3.0 switching found in Linux is for Pantherpoint only:

See /drivers/usb/host/pci-quirks.c in a recent Linux source code tree:

bool usb_is_intel_switchable_xhci(struct pci_dev *pdev)
{
        return pdev->class == PCI_CLASS_SERIAL_USB_XHCI &&
                pdev->vendor == PCI_VENDOR_ID_INTEL &&
                pdev->device == PCI_DEVICE_ID_INTEL_PANTHERPOINT_XHCI;
}
EXPORT_SYMBOL_GPL(usb_is_intel_switchable_xhci);

--HPS
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