Just looked through the PR mail that came today and found possible
duplicates.

o usb/180726   usb        XHCI umass support breaks between r248085 and
r252560
o usb/179342   usb        Freebsd 10.0-current USB 3.0 not working
(xhci_do_coma




Johannes Lundberg
BRILLIANTSERVICE CO., LTD. <http://www.brilliantservice.co.jp>


On Mon, Aug 26, 2013 at 4:42 PM, Lundberg, Johannes <
johan...@brilliantservice.co.jp> wrote:

> Hi
>
> I'm trying to install 10-CURRENT on a 2013 MacBook Air and there seem to
> be some problem with the xhci driver.
>
> During boot of the memstick image of current from 20130818 I get either of
> the following errors:
>
> - Boot freezes during probe of xhci devices.
> - Probing times out (immediately) and I get the mountroot> prompt but no
> functional keyboard.
>
> I tried an image of 10-current from May but the problem is the same so
> what ever change that made this stop working was committed before May.
>
> I also tried disabling xhci with the following steps but without success
>
> - Enter boot prompt
> - set hint.xhci.0.disabled=1
> - load ehci / uhci
> - boot
>
> The 9.1 release successfully detects all usb devices during install but
> stop working at the partitioning tool because the PCIe SSD drive isn't
> detected. Using 9.1 as LiveCD I managed to pull out the following
> information.
>
> -----
>
> MacBook Air 2013, FreeBSD 9.1 LiveCD
>
> dmesg output
>
> xhci0: <XHCI (generic) USB 3.0 controller> mem 0xb0a00000-0xb0a0ffff at
> device 20.0 on pci0
>
> pciconf -l output
>
> xhci0@pci0:0:20:0: class=0x0c0330 card=0x72708086 chip=0x9c318086
> rev=0x04 hdr=0x00
>
> usbconfig output
>
> ugen0.1: <XHCI root hub 0x8086> at usbus0, cfg=0 md=HOST spd=SUPER
> (5.0Gbps) pwr=SAVE
> ugen0.2: <BRCM20702 Hub Apple Inc.> at usbus0, cfg=0 md=HOST spd=FULL
> (12Mbps) pwr=SAVE
> ugen0.3: <product 0x820a vendor 0x05ac> at usbus0, cfg=0 md=HOST spd=FULL
> (12Mbps) pwr=ON
> ugen0.4: <product 0x820b vendor 0x05ac> at usbus0, cfg=0 md=HOST spd=FULL
> (12Mbps) pwr=ON
> ugen0.5: <Bluetooth USB Host Controller Apple Inc.> at usbus0, cfg=0
> md=HOST spd=FULL (12Mbps) pwr=ON
> ugen0.6: <Apple Internal Keyboard  Trackpad Apple Inc.> at usbus0, cfg=0
> md=HOST spd=FULL (12Mbps) pwr=ON
> ugen0.7: <USB Flash Disk BUFFALO> at usbus0, cfg=0 md=HOST spd=SUPER
> (5.0Gbps) pwr=ON
>
> -----
>
> Anyone has any clue what's going on?
>
> Best regards
>
> Johannes Lundberg
> BRILLIANTSERVICE CO., LTD. <http://www.brilliantservice.co.jp>
>
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