reset with fwcontrol -R

[Sean Bruno]

On Mon, 2010-01-11 at 03:28 +0900, Kazumaro Aoki wrote:
> From: Sean Bruno <sean.bruno at dsl-only.net>
> Subject: Re: reset with fwcontrol -R
> Date: Mon, 04 Jan 2010 13:16:22 -0800
> 
> >> > I have several experiences that sudden reboot is happened just after
> >> > "fwcontrol -R foo.dv" was invoked.  The operating system is FreeBSD
> >> > 7.2R/i386.  Before I use 7.2R, I used 6.3R and I never experienced
> >> > such phenomenon.
> >> 
> >> At December 27, I met the similar problem.  The system caused a panic.
> (snip)
> > I'm not clear what is going on from the attached information.  I have
> > been looking around to see what could have changed to affect these
> > problems.
> 
> Thank you for considering my problem.
> 
> > Can you try setting the firewire debug to 3 and testing?  
> > sysctl debug.firewire_debug=3
> 
> Yes.  I changed the value described above and I observed the system
> behavior.  The OS hardly panics, but I finally got the panic.
> I copied the log message from messages without date and system name:
>   start IR DMA 0x40000011
>   
>   
> 
> I feel that no helpful information is logged.
> 
I agree.  Not helpful.

The debug.firewire_debug=3 will display more output on the console
during use.  This is the interesting information to capture.  Probably,
you would need to configure a serial console and capture the output from
a second computer.  However, the next bit of information is MORE
interesting to me.

> The panic was occurred January 7.  After this, I did not meet a panic.
> At that time, I did not make a crash dump.  When the panic happens
> next time, I can get a crash dump.  I used fwcontrol -R about 17 times
> per day.
> 
> Ah, I forgot to mention the following fact.  When I used without -M dv
> option, fwcontrol -R outputs:
>   fwcontrol: detect_recv_fn: ioctl FW_SSTBUF: Bad file descriptor
> So, I used fwcontrol implementation in FreeBSD 6.3R.  Moreover, when
> I am using fwcontrol -R, I cannot use "fwcontrol" with no option.
> When I used FreeBSD6.3R, I can see the result from fwcontrol, because
> fwcontrol outputs:
>   fwcontrol: main: Error opening firewire controller #0 /dev/fw0.0: Device busy
> That is the another reason why I use fwcontrol implemented in FreeBSD
> 6.3R, though the operating system is FreeBSD7.2R.
> 

If I understand correctly, you are using the FBSD 6.3 fwcontrol on a
FBSD 7.2 system to use your cameras.

The fact that the 7.2 system does not work correctly *may* be easier to
fix than the 6.3R panic with a 7.2R binary.  I will attempt to debug
this problem first and see if I can determine what's broken.

Thank you for your patience.  We'll get it working.

Sean