netdev - Re: tg3 driver not advertising 1000mbit

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Date:	Fri, 26 Jun 2009 19:26:29 -0700
From:	"Matt Carlson" <mcarlson@...adcom.com>
To:	"Jean-Louis Dupond" <info@...ondje.be>
cc:	"Matthew Carlson" <mcarlson@...adcom.com>,
	"Michael Chan" <mchan@...adcom.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"David Christensen" <davidch@...adcom.com>
Subject: Re: tg3 driver not advertising 1000mbit

On Fri, Jun 26, 2009 at 02:33:03PM -0700, Jean-Louis Dupond wrote:
> Hi,
> 
> All tested kernels had the same issue (2.6.22, 2.5.25.4 & 2.6.28.1).

O.K.  So that means the problem wasn't recently introduced.  Good to
know.

> dmesg |grep tg3:
> 
> tg3.c:v3.97 (December 10, 2008)
> tg3 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
> tg3 0000:01:00.0: setting latency timer to 64
> tg3 0000:01:00.0: PME# disabled
> tg3 0000:02:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
> tg3 0000:02:00.0: setting latency timer to 64
> tg3 0000:02:00.0: PME# disabled
> tg3 0000:01:00.0: PME# disabled
> tg3: eth0: Link is up at 1000 Mbps, full duplex.
> tg3: eth0: Flow control is off for TX and off for RX.
> 
> Now here it booted @ Gbit speeds!

The specific set of lines I'm looks something like this:

eth0: Tigon3 [partno(BCM95722) rev a200] (PCI Express) MAC address 00:10:18:15:16:b6
eth0: attached PHY is 5722/5756 (10/100/1000Base-T Ethernet) (WireSpeed[1])
eth0: RXcsums[1] LinkChgREG[0] MIirq[0] ASF[0] TSOcap[1]
                                        ^^^^^^
eth0: dma_rwctrl[76180000] dma_mask[64-bit]


Like Michael, I'm tempted to look into the cabling too.  How long are
they?  Silly question, but are they Cat5e?  When link does come up, does
it take unusually long?

> Matt Carlson schreef:
> > Was there a version of the kernel where this device worked reliably?
> > 
> > Can you post the driver sign-on messages?  (I'm looking to see if ASF
> > is enabled.)
> > 
> > On Fri, Jun 12, 2009 at 03:16:59PM -0700, Jean-Louis Dupond wrote:
> >> I surely tried other cables. But its surely not the cable because:
> >> 1) We tried other cables
> >> 2) After a reboot it works, or after a mii-tool -R
> >> 3) We have this issue on like +100 servers :(
> >>
> >> The servers are connected on a Dell PowerConnect 6248 switch.
> >>
> >> Sincerely
> >>
> >> Michael Chan schreef:
> >>> On Fri, 2009-06-12 at 14:51 -0700, Jean-Louis Dupond wrote:
> >>>> Hello!
> >>>>
> >>>> Here is a mii-tool -vvv on a box that doesn't advertise gbit speeds! It 
> >>>> just doesn't advertise gbit @ random, sometimes it does, sometimes not! 
> >>>> Without any logic in it!
> >>>>
> >>>> # mii-tool  -vvv
> >>>> Using SIOCGMIIPHY=0x8947
> >>>> eth0: link ok
> >>>>     registers for MII PHY 1:
> >>>>       1000 794d 0143 bed0 05e1 0000 0064 2001
> >>>>       0000 0300 0000 0000 0000 0000 0000 3000
> >>> Register 1 shows that autoneg did not complete (bit 5 is not set).
> >>> The tg3 device has advertised 10/100/1000 in register 4 and register 9,
> >>> but registers 5 and 0xa (link partner's advertisement registers are 0).
> >>>
> >>> When it works, these registers should look very different.
> >>>
> >>> Have you tried other cables?  What is the link partner?
> >>>
> >>>>       0000 0101 0000 0000 0000 0000 0000 0000
> >>>>       7477 0104 0000 ffff 2801 0000 8000 0000
> >>>>     product info: vendor 00:50:ef, model 45 rev 0
> >>>>     basic mode:   autonegotiation enabled
> >>>>     basic status: link ok
> >>>>     capabilities: 1000baseT-HD 1000baseT-FD 100baseTx-FD 100baseTx-HD
> >>>> 10baseT-FD 10baseT-HD
> >>>>     advertising:  100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-
> >>>> control
> >>>>
> >>>> # dmesg | grep tg3
> >>>> [    3.331702] tg3.c:v3.92.1 (June 9, 2008)
> >>>> [   18.238654] tg3: eth0: Link is up at 10 Mbps, half duplex.
> >>>> [   18.238654] tg3: eth0: Flow control is off for TX and off for RX.
> >>>>
> >>>>
> >>>
> >>>
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