new sk driver [was: nve timeout (and down) regression?]

[Pyun YongHyeon]

On Tue, Mar 28, 2006 at 04:22:15PM +0200, Wilko Bulte wrote:
 > On Mon, Mar 27, 2006 at 07:48:46PM -0800, Clint Olsen wrote..
 > > On Mar 28, Pyun YongHyeon wrote:
 > > > and sparc64(SMP) and I never see above errors.  The only issue known to
 > > > me is occasional watchdog timeout error which I really want to fix. But
 > > > the watchdog timeout error is hard to reproduce and I couldn't reproduce
 > > > the error on my system.
 > > 
 > > I'm still seeing the watchdog timeout on 5.5-PRERELEASE (uni-processor):
 > > 
 > > Mar 22 14:47:04 belle kernel: sk0: watchdog timeout
 > > Mar 24 08:37:19 belle kernel: sk0: watchdog timeout
 > > Mar 27 04:09:15 belle kernel: sk0: watchdog timeout
 > > 
 > > But at least the driver doesn't wedge the interface now.
 > 
 > Yes, same here on 6.1-PRERELEASE:
 > 
 > ch0: 10 slots, 1 drive, 1 picker, 0 portals
 > sk0: watchdog timeout
 > sk0: watchdog timeout
 > 

Ok, here is a new patch that try to fix the watchdog timeout error.
I don't know it will eradicate the bug as I don't see the watchdog
error on my system.
The patch borrowed Yukon specific register definition from Linux
driver and adopted Yukon FIFO related operations from Linux. I don't
know exact meaning of the registers(it's just guessing) but it seems
it doesn't hurt on my system.

You may have to download 4 files to build the driver.
http://people.freebsd.org/~yongari/sk/sk_test2/if_sk.c
http://people.freebsd.org/~yongari/sk/sk_test2/if_skreg.h
http://people.freebsd.org/~yongari/sk/sk_test2/xmaciireg.h
http://people.freebsd.org/~yongari/sk/sk_test2/yukonreg.h

-- 
Regards,
Pyun YongHyeon