Re: Fwd: Ehernet FEC problem in Coldfire M5272C3

Ashish Phogat <[email protected]>
Newsgroups gmane.linux.uclinux.devel
Message-ID <CANNeobag3Bnrs1iTxomoSeyG7q94uk7_-AkCN9nOsrouS6+npg@mail.gmail.com>
Hi Greg,
I am sorry I am new to linux...I donot know how to add traces. Could you
please help me with that?

Meanwhile I am trying to add few utilities in my uclinux such as
mii-tool-fec, traceroute or ethtool.

Lets see how much I am able to debug or get more information.

Thanks for your help.

Thanks
Ashish Phogat

On Thu, Mar 28, 2013 at 8:22 AM, Greg Ungerer <[email protected]>wrote:

> Hi Ashish,
>
> On 28/03/13 21:57, Ashish Phogat wrote:
> > I had a look at all the patches made for M5272C3 in cvs.org
> > <http://cvs.org> for kernel 2.4.x in last couple of years. It seems all
> > patches are included in my distribution (uClinux-dist-20120401.tar.bz2).
> > I don't have idea why this error NETDEV WATCHDOG is still coming. I am
> > running at 50Mhz clock frequency. Is there any problem with frequency?
>
> No, I don't think that will cause you any problems.
>
> From the interrupt count it doesn't look like you are getting any TX
> interrupts from the FEC. This will cause the NETDEV WATCHDOG to
> eventually timeout and you get the kernel trace you see.
>
> You are getting "other" interrupts from the FEC - I think you should
> add some trace and see what those are. Maybe they will give some
> clues.
>
> Regards
> Greg
>
>
> >     On Wed, Mar 27, 2013 at 6:24 PM, Ashish Phogat
> >     <[email protected] <mailto:[email protected]>> wrote:
> >
> >         Hi Greg,
> >         When I did cat proc/interrupts:
> >
> >         /> cat /proc/interrupts
> >          66:          0   fec(MII)
> >          72:       3393   ColdFire Timer
> >          73:       1084   ColdFire UART
> >          74:          0   ColdFire UART
> >          77:          0   ColdFire USB (EP0)
> >          78:          0   ColdFire USB (EP1)
> >          79:          0   ColdFire USB (EP2)
> >          80:          0   ColdFire USB (EP3)
> >          81:          0   ColdFire USB (EP4)
> >          82:          0   ColdFire USB (EP5)
> >          83:          0   ColdFire USB (EP6)
> >          84:          0   ColdFire USB (EP7)
> >          86:          0   fec(RX)
> >          87:          0   fec(TX)
> >          88:         13   fec(OTHER)
> >          89:          0   ColdFire QSPI
> >
> >         Thanks
> >         Ashish phogat
> >
> >         On Wed, Mar 27, 2013 at 7:55 AM, Greg Ungerer
> >         <[email protected] <mailto:[email protected]>>
> wrote:
> >
> >             Hi Ashish,
> >
> >             On 27/03/13 06:12, Ashish Phogat wrote:
> >             > My Kernel is 2.4.34.5 and uClinux-dist is
> >             uClinux-dist-20120401.tar.bz2.
> >
> >             Ok. I haven't run 2.4 kernels for a long time... but some
> >             comments
> >             below.
> >
> >
> >             >     > /> NETDEV WATCHDOG: eth0: transmit timed out
> >             >     > eth0: transmit timed out.
> >             >     > Ring data dump: cur_tx 321100, dirty_tx 321100
> >             cur_rx: 321000
> >             >     >  tx: 16 buffers
> >             >     >   00321100: 0000 0012 00000000
> >             >     >   00321108: 0000 0816 00000000
> >             >     >   00321110: 0000 001a 00000000
> >             >     >   00321118: 0000 0c1e 00000000
> >             >     >   00321120: 0000 0432 00000000
> >             >     >   00321128: 0000 40a6 00000000
> >             >     >   00321130: 0000 002a 00000000
> >             >     >   00321138: 0000 002e 00000000
> >             >     >   00321140: 0000 0032 00000000
> >             >     >   00321148: 0000 0036 00000000
> >             >     >   00321150: 0000 003a 00000000
> >             >     >
> >             >     >  rx: 32 buffers
> >             >     >   00321000: 8000 0440 00320000
> >             >     >   00321008: 8000 0c70 00320800
> >             >     >   00321010: 8000 092b 0037f000
> >             >     >   00321018: 8000 ff9a 0037f800
> >             >     >   00321020: 8000 7fa2 0037e000
> >             >     >   00321028: 8000 eda6 0037e800
> >             >     >   00321030: 8000 ffa2 0037d000
> >             >     >   00321038: 8000 ffa6 0037d800
> >             >     >   00321040: 8000 ffb2 0037c000
> >             >     >   00321048: 8000 ffb6 0037c800
> >             >     >   0032
> >             >     >
> >             >     > Spurious interrupt 1
> >
> >             Together this looks like an interrupt issue. What do you see
> >             if you "cat /proc/interrupts"?
> >
> >             Regards
> >             Greg
> >
> >
> >             >     >
> >             >     > uclinux simply hangs there. I found that there is a
> >             large amount
> >             >     of people who are getting the same problem in past
> >             couple of years.
> >             >     But I did not get any solution for the problem.
> >             >     >
> >             >     > Please let me know whether this problem still exists
> >             in uclinux
> >             >     source code for M5272C3. where I will find the
> >             solution for that?
> >             >     >
> >             >     > My Ethernet Hardware Info:
> >             >     > fec.c: Probe number 1 with 0x0000
> >             >     > eth0: FEC ENET Version 0.2, 00:e0:0c:bc:e5:60
> >             >     > fec: PHY @ 0x1, ID 0x0022561b -- AM79C874
> >             >     >
> >             >     > Thanks and Appreciated for your help.
> >             >     >
> >             >     > Thanks
> >             >     > Ashish Phogat
> >             >     >
> >             >     >
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