Messages in this thread | | | Date | Fri, 16 Mar 2007 14:16:48 -0700 | From | Stephen Hemminger <> | Subject | Re: sky2 PHY setup |
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On Fri, 16 Mar 2007 14:36:45 -0600 Rob Sims <lkml-z@robsims.com> wrote:
> On Fri, Mar 16, 2007 at 09:59:32AM -0700, Stephen Hemminger wrote: > > On Fri, 16 Mar 2007 01:29:12 +0100 > > Thomas Glanzmann <thomas@glanzmann.de> wrote: > > > > > Hello Stephen, > > > > > > > yesterday I pulled from Linus tree because I saw the sky2 updated and I > > > > tried to break it but it seems that my problems are gone. I let you know > > > > if anything pops up in the future. > > > > > > bad news. I today tried the sky2 driver which is in Linus Kernel Tree > > > (HEAD) on a machine with very high network load and it stopped working > > > without any kernel messages after doing a flawless job under high load > > > for 5 hours. My watchdog rebooted the machine after 500 seconds. ;-( > > > > > > Thomas > > > > I have run for 2+ days under load without problems. It is hard to > > reproduce or do much about your problem without more info. > > Are there some debug hooks that can be activated? My sky2 stops > responding (very light load) about twice a day. The netdev watchdog > notices after a while and is able to reactivate the interface: > > Mar 15 13:28:12 btd kernel: NETDEV WATCHDOG: eth0: transmit timed out > Mar 15 13:28:12 btd kernel: sky2 eth0: tx timeout > Mar 15 13:28:12 btd kernel: sky2 eth0: transmit ring 458 .. 435 report=458 done=458 > Mar 15 13:28:12 btd kernel: sky2 eth0: disabling interface > Mar 15 13:28:12 btd kernel: sky2 eth0: enabling interface > Mar 15 13:28:12 btd kernel: sky2 eth0: ram buffer 48K > Mar 15 13:28:15 btd kernel: sky2 eth0: Link is up at 1000 Mbps, full duplex, flow control both
Use ethtool -S to if there are any pause frames, etc. See if frames are still making it into PHY statistics but not being received.
Use ethtool -d to dump registers. Need current version of ethtool with decode logic.
Then look for things like is Ram buffer read/write pointer changing?
Is GMAC stuck in pause:
Normal is: GMAC 1 Status 0x5010 (see GM_GPSR_XXX in sky2.h) Control 0x1800
Stuck is GMAC 1 Status 0x5810 (or 0x5A10)
-- Stephen Hemminger <shemminger@linux-foundation.org> - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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