Problem with saturn since 2.6.29 (debian kernel).

[Sébastien Bernard]

I'm running on linux-image-2.6.29-2-sparc64-smp on an U60 (2x Uii 450mhz).

I'm on SID and I had quite a lot of problems with my ethernet controler.

Here's the references of the controler :
0000:00:02.0 Ethernet controller: National Semiconductor Corporation
DP83065 [Saturn] 10/100/1000 Ethernet Controller (rev 30)

PCI Id is 100b:0035.

The Kernel reported the following problem :
[1684214.274488] eth1: Link down
[1684214.274512] eth1:reset called in cas_abnormal_irq [0xa721000]
[1684220.889911] eth1: Link up at 1000 Mbps, full-duplex.
[1684220.889937] eth1: Pause is enabled (rxfifo: 16384 off: 13312 on: 11776)
[1684221.081675] eth1: Link down
[1684221.081694] eth1:reset called in cas_abnormal_irq [0x21000]
[1684236.586802] eth1: Link up at 100 Mbps, full-duplex.
[1684236.586826] eth1: Pause is enabled (rxfifo: 16384 off: 13312 on: 11776)
[1707485.501429] eth1: Link down
[1707485.501448] eth1:reset called in cas_abnormal_irq [0x4621000]
[1707505.313339] eth1: Link up at 1000 Mbps, full-duplex.
[1707505.313363] eth1: Pause is enabled (rxfifo: 16384 off: 13312 on: 11776)
[1707505.321494] eth1: Link down
[1707505.321511] eth1:reset called in cas_abnormal_irq [0x21000]
[1707509.789804] eth1: Link up at 100 Mbps, full-duplex.
[1707509.789826] eth1: Pause is enabled (rxfifo: 16384 off: 13312 on: 11776)


The machine was working ok with 2.6.28-7-smp kernel.
Transfert are slow (~ 4-7 MBytes/s) and pauses at regular times.

On 2.6.30-1, it goes worse. Link goes down and up every few seconds,
making the work
a nightmare.

Is this a know problem or should I report a bug for this ?

    Seb


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[Sébastien Bernard]

Sébastien Bernard a écrit :

> I'm running on linux-image-2.6.29-2-sparc64-smp on an U60 (2x Uii
> 450mhz).
>
> I'm on SID and I had quite a lot of problems with my ethernet controler.
>
> Here's the references of the controler :
> 0000:00:02.0 Ethernet controller: National Semiconductor Corporation
> DP83065 [Saturn] 10/100/1000 Ethernet Controller (rev 30)
>
> PCI Id is 100b:0035.
>
> The Kernel reported the following problem :
> [1684214.274488] eth1: Link down
> [1684214.274512] eth1:reset called in cas_abnormal_irq [0xa721000]
> [1684220.889911] eth1: Link up at 1000 Mbps, full-duplex.
> [1684220.889937] eth1: Pause is enabled (rxfifo: 16384 off: 13312 on:
> 11776)
> [1684221.081675] eth1: Link down
> [1684221.081694] eth1:reset called in cas_abnormal_irq [0x21000]
> [1684236.586802] eth1: Link up at 100 Mbps, full-duplex.
> [1684236.586826] eth1: Pause is enabled (rxfifo: 16384 off: 13312 on:
> 11776)
> [1707485.501429] eth1: Link down
> [1707485.501448] eth1:reset called in cas_abnormal_irq [0x4621000]
> [1707505.313339] eth1: Link up at 1000 Mbps, full-duplex.
> [1707505.313363] eth1: Pause is enabled (rxfifo: 16384 off: 13312 on:
> 11776)
> [1707505.321494] eth1: Link down
> [1707505.321511] eth1:reset called in cas_abnormal_irq [0x21000]
> [1707509.789804] eth1: Link up at 100 Mbps, full-duplex.
> [1707509.789826] eth1: Pause is enabled (rxfifo: 16384 off: 13312 on:
> 11776)
>
>
> The machine was working ok with 2.6.28-7-smp kernel.
> Transfert are slow (~ 4-7 MBytes/s) and pauses at regular times.
>
> On 2.6.30-1, it goes worse. Link goes down and up every few seconds,
> making the work
> a nightmare.
>
> Is this a know problem or should I report a bug for this ?
>
>    Seb
>
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I did a little investigation. The driver involved is the cassini.
The updated driver doesn't want to negociate 1000 Mbps full duplex as
before.
Did a manual compile of a vanilla 2.6.30.5 kernel and got the same results.
100Mbp/FD negociation.
Each time the link is loaded (a.k.a. transfer a consequent file), the
transfer stall several times and
overall I get a 3Mbyte/s average transfer (before I was getting full
100mb link saturated i.e. near 11Mbytes/s).
During the transfer, one can see one the console the following warnings :

[ 7698.289666] eth1: Link down
[ 7698.294095] eth1:reset called in cas_abnormal_irq [0xfa1000]
[ 7709.312133] eth1: Link up at 1000 Mbps, full-duplex.
[ 7709.316612] eth1: Pause is enabled (rxfifo: 16384 off: 13312 on: 11776)
[ 7710.247998] eth1: Link down
[ 7710.252406] eth1:reset called in cas_abnormal_irq [0x5a1000]
[ 7714.656684] eth1: Link up at 1000 Mbps, full-duplex.
[ 7714.661096] eth1: Pause is enabled (rxfifo: 16384 off: 13312 on: 11776)
[ 7714.878336] eth1: Link down
[ 7714.882719] eth1:reset called in cas_abnormal_irq [0xa1000]
[ 7719.285192] eth1: Link up at 1000 Mbps, full-duplex.
[ 7719.289763] eth1: Pause is enabled (rxfifo: 16384 off: 13312 on: 11776)
[ 7719.582541] eth1: Link down
[ 7719.587005] eth1:reset called in cas_abnormal_irq [0x321000]
[ 7723.989687] eth1: Link up at 100 Mbps, full-duplex.
[ 7723.994047] eth1: Pause is enabled (rxfifo: 16384 off: 13312 on: 11776)


I suspect either :  
    a- some kind of firmware misbehavior since the 2.6.28 which was
working ok got the same problem.
    b- a hardware problem

    Seb


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