Re: yongari nfe problems

Pyun YongHyeon schrieb:
> On Tue, Apr 03, 2007 at 06:49:42PM +0200, Rainer Hurling wrote:
> 
> [...]
>  > 
>  > In "man ehci(4)" I found:
>  > 
>  > -------
>  > BUGS
>  >      The driver is not finished and is quite buggy.
>  >      There is currently no support for isochronous transfers.
>  > -------
>  > 
>  > Possibly this could cause the observed "dropouts" of nfe0 from a few 
>  > seconds till several minutes?
>  > 
> 
> I'm not familiar with ehci(4) but I think it has nothing to do with
> missing Tx completion interrupts observed on nfe(4).
> 
>  > 
>  > Is there a knob or option in driver nfe(4) I can use to try classical 
>  > polling or any 'lower' mode of operation?
>  > 
> 
> Add 'options DEVICE_POLLING' into kernel configuration file and
> rebuild your kernel. Use ifconfig(8) to enable/disable polling(4)
> feature.
> See polling(4) for more detailed description and tuning parameters.
> 

Thank you for this hint. I compiled my kernel with 'options 
DEVICE_POLLING' and reboot.

For the first four hours I get no new watchdog timeouts. But then, 
without heavy load and without using usb devices, I get many timeouts.

Obiously nfe(4) does not support this polling feature? Or we are looking 
at the wrong side ...

Rainer