netdev - Re: [sky2, solved] transmit timeouts and firmware update...

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Message-ID: <20080827144218.5c1d2439@extreme>
Date:	Wed, 27 Aug 2008 14:42:18 -0700
From:	Stephen Hemminger <shemminger@...tta.com>
To:	"Daniel J Blueman" <daniel.blueman@...il.com>
Cc:	"Krzysztof Oledzki" <ole@....pl>,
	"Linux Netdev" <netdev@...r.kernel.org>,
	"Linux Networking" <linux-net@...r.kernel.org>
Subject: Re: [sky2, solved] transmit timeouts and firmware update...

On Wed, 27 Aug 2008 22:37:51 +0100
"Daniel J Blueman" <daniel.blueman@...il.com> wrote:

> On Wed, Aug 27, 2008 at 9:27 PM, Stephen Hemminger
> <shemminger@...tta.com> wrote:
> > On Mon, 25 Aug 2008 15:22:06 -0400
> > Stephen Hemminger <shemminger@...tta.com> wrote:
> >
> >> On Mon, 25 Aug 2008 21:03:25 +0200 (CEST)
> >> Krzysztof Oledzki <ole@....pl> wrote:
> >>
> >> >
> >> >
> >> > On Mon, 25 Aug 2008, Daniel J Blueman wrote:
> >> >
> >> > > I (and a lot of other users) have been experiencing the frequent sky2
> >> > > transmit timeout problem [1] (on 88E8053/Yukon2 EC gig hardware); this
> >> > > is a result of the embedded NIC controller locking up, and I've found
> >> > > that updating the firmware addresses this issue. I'm still seeing a
> >> > > previous and different issue [2] from time to time though (silicon
> >> > > bug?).
> >> >
> >> > Thanks for the info. I've been dealing with this problem for some long
> >> > time, hopefully sky driver from the latest kernels is able to recover
> >> > from such hangs, so it is not that critical problem now.
> >> >
> >> > > Marvell shipping broken firmware is completely unpublicised or
> >> > > acknowledged, however updated firmware is available through your
> >> > > motherboard vendor, so all hope it not lost after all...
> >> >
> >> > Unfortunately not through all vendors. :( Or maybe not *yet*?
> >> >
> >> > > My 8053/EC is using firmware 2.2 (previously 1.9) - you can check in
> >> > > DOS with 'yukondg.exe' from
> >> > > http://www.marvell.com/drivers/files/yukondg_v6.53.4.3.zip .
> >> >
> >> > Stephen, is it possible for sky2 driver to check and print the
> >> > firmware version?
> >>
> >> It is possible to dump and program eeprom from linux, and the version
> >> maybe buried in the VPD, but some hardware has non-functional VPD.
> >
> > The revision number in the VPD matches the revision number (from PCI)
> > that is already printed by the driver. Since I don't have enough documentation
> > on the firmware to know the format, there is no way to print anything
> > really useful.
> 
> $ lspci -d11ab:
> 02:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8053
> PCI-E Gigabit Ethernet Controller (rev 22)
> 07:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8036
> PCI-E Fast Ethernet Controller (rev 15)
> 
> $ dmesg | grep sky2.*rev
> [   33.998133] sky2 0000:02:00.0: v1.20 addr 0xd6000000 irq 16
> Yukon-EC (0xb6) rev 2
> [   33.999085] sky2 0000:07:00.0: v1.20 addr 0xd8000000 irq 18
> Yukon-FE (0xb7) rev 1
> 
> The 'rev' reported by the driver is from:
> 
>         hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
> 
> which is the chip/silicon revision, whereas the rev reported by the
> PCI device is the firmware revision, as you've found.
> 
> How about:
> 
> 02:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8053
> PCI-E Gigabit Ethernet Controller (silicon rev 2, firmware/PCI rev 22)
> 
> This introduces perhaps something even more useful - we know there are
> really major issues with (eg) 88E8053 before firmware 2.2; is it worth
> adding a warning, such as:
> 
> sky2: firmware earlier than rev 2.2 detected - if you experience
> transmit timeouts, ask vendor for 88E8053 firmware update
> 
> There are a lot of bug reports on the web pointing the finger at the
> sky2 driver, and waiting for a 'fixed' version, but the issue is
> elsewhere...part of the problem, if there is (almost) no
> documentation/evidence of this problem posted anywhere.
> 
> Many thanks,
>   Daniel

lspci reports PCI rev.  driver reports chip rev.
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