Re: Call for bfe(4) testers.

On Sat, Aug 02, 2008 at 11:28:30AM +0200, Ulrich Spoerlein wrote:
 > On Wed, 30.07.2008 at 20:34:49 +0900, Pyun YongHyeon wrote:
 > > 
 > > Hi,
 > > 
 > > I have been using the following patched bfe(4) and it seems it
 > > works as expected. I've fixed long standing bus_dma(9) bugs in it
 > > and it should work on systems with > 1GB memory. In theory bfe(4)
 > > should also work on big-endian architectures. However the 1GB DMA
 > > address space of the hardware is much lower than that of DVMA base
 > > address of sparc64 so the possibility of using bfe(4) on sparc64 is
 > > zero. :-(
 > > 
 > > As added bonus of patched driver, bfe(4) now supports hardware
 > > statistics counter. You can use sysctl(8) to see what counters are
 > > maintained in the hardware. For example, the following command will
 > > show detailed statistics for Tx/Rx frames.
 > > #sysctl dev.bfe.0.stats=1
 > > 
 > > If you have one of bfe(4) hardwares please give it try and let me
 > > know how it goes. The latest bfe(4) can be found at the following
 > > URL.
 > > http://people.freebsd.org/~yongari/bfe/if_bfe.c
 > > http://people.freebsd.org/~yongari/bfe/if_bfereg.h
 > 
 > Hi Pyun,
 > 
 > I recompiled a fresh RELENG_7 kernel with the files above, and it led to
 > a panic, shortly after the system was up. I can't provide you with a
 > dump for now, but here's the handwritten backtrace:
 > 
 > last dmesg: no toe capability of 0xc421d800
 > trace:
 >         device_is_attached
 >         cf_set_method
 >         cpufreq_curr_sysctl
 >         sysctl_root
 >         userland_sysctl
 > 

I can't reproduce this and the backtrace does not seem to be
related with bfe(4). Did bfe(40 spew some error messages?

 > If you need more info, I'll crash the machine again, I'm also happy to
 > test further patches.
 > 

Would you enable DDB/KDB in kernel get a backtrace again?

-- 
Regards,
Pyun YongHyeon