some usb troubles

[Konstantin Belousov]

On Sun, Feb 10, 2013 at 12:03:36PM +0100, Hans Petter Selasky wrote:
> On Saturday 09 February 2013 19:01:25 Chagin Dmitry wrote:
> > Hi all,
> > 
> > trying to run macbookpro10,1 on HEAD:
> > 
> > 1) usb3.0 does not work at 9.1 and HEAD (r246587)
> > 2) Between stable/9 and HEAD (r246587) we are lost uhid devices
> > (external keyboard and mouse) and umass. dmesg on the same hw can find
> > here:
> > 
> > http://people.freebsd.org/~dchagin/macbookpro/dmesg.generic.stable9.txt
> > http://people.freebsd.org/~dchagin/macbookpro/dmesg.generic.HEAD.txt
> > 
> > pciconf:
> > 
> > http://people.freebsd.org/~dchagin/macbookpro/pciconf.txt
> > 
> > any help would be greatly apprecated.
> 
> Hi,
> 
> This error is not directly USB related. It means probably that ACPI or the PCI 
> subsystem is not finding an IRQ for the XHCI driver. This might be the reason 
> USB is not working properly.
> 
> xhci0: Could not allocate IRQ
> device_attach: xhci0 attach returned 6

It seems that apple firmware assumes that USB host controller driver
will use MSI. FreeBSD drivers tries to set up the legacy IRQ, and fails
because apple tables do not describe this set-up.
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