From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Thu, 12 Nov 2009 22:33:02 +0100
Message-ID: <8ccc8ba40911121333v28383047mfa091890b1ce5e56@mail.gmail.com>
From: Francisco J Ballesteros <nemo@lsub.org>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
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Subject: Re: [9fans] usbd and boot
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Ok. thanks.
If I find out what's wrong I'll drop you a line a send a patch.

On Thu, Nov 12, 2009 at 10:28 PM, erik quanstrom <quanstro@quanstro.net> wr=
ote:
> On Thu Nov 12 13:36:19 EST 2009, nemo@lsub.org wrote:
>> I tried this on one machine and it worked.
>> I'll keep trying to see if that's just that machine which works.
>>
>> I'd like to get debug output (usbdebug=3D2) for a machine hang.
>
> last bit of output
> uhci 0xc400 setting run to 1
> uhci 0xc400 cmd 0x1 sts 0x0
> uhci init: cmd 0x1 sts 0x0 sof 0x50 flb 0x5a000 frno 0x0 psc0 psc1 0x80
>
> i added some debugging to determine that one actually finishes
> the routine and returns to usbinit in devusb.c. =C2=A0on my screen
> i see hub 0, 1, 2, 3, 6 on my screen. =C2=A0there's some stuff that's
> scrolled off.
>
> it appears to be hanging on a context switch or in an interrupt.
> perhaps even an smi interrupt.
>
> - erik
>
>