[tulip-bug] Probems with FastLine-II FO (100BaseFX Card)

[Donald Becker]

On Mon, 23 Apr 2001, Christoph Heine wrote:

> I've two problems with two FastLine-II FO Cards:
> 
> a) There is something wrong with 'TX packets' and 'TX errors'
>           RX packets:237758 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:3048 errors:206356 dropped:0 overruns:1carrier:206356
>           collisions:0 txqueuelen:100
> While this seems only to be cosmetically, the other problem is more
> noticeable:

Those errors are *not* cosmetic -- they are reporting a serious probem.
It appears the chip is not properly configured to work with the
transceiver.

> b)
> Packetloss, from 2% up to 4%. (Which does not occur when I use a
> eepro100 with a media converter)

The packet loss is likely connected to the problem reported above.

> Linux Tulip driver version 0.9.14 (February 20, 2001)

Does the card work properly with the unmodified driver from Scyld?

> Linux Tulip driver version 0.9.14 (February 20, 2001)
> PCI: Found IRQ 12 for device 00:0a.0
> eth1: Digital DS21143 Tulip rev 65 at 0x9400, 00:00:CB:55:06:67, IRQ
> 12.
> eth1:  EEPROM default media type MII 100baseTx.
> eth1:  Index #0 - Media MII (#11) described by a 21142 MII PHY (3)
> block.
> eth1:  Index #1 - Media AUI (#2) described by a 21143 reset method (5)
> block.

This (modified) driver version has an obvious bug.

> mii-diag.c:v2.00 4/19/2000  Donald Becker (becker@scyld.com)
>  http://www.scyld.com/diag/index.html
>  MII PHY #1 transceiver registers:
>    2100 780d 7810 0003 0001 0000 0000 0000
>    0000 0000 0000 0000 0000 0000 0000 0000
>    0000 0000 4000 0104 3808 0010 0000 0002
>    0001 0000 0000 0000 0000 0000 0000 0000.
>  Basic mode control register 0x2100: Auto-negotiation disabled, with
>  Speed fixed at 100 mbps, full-duplex.

Hmmm, curious.  Did you set the media type to forced-full-duplex?


Donald Becker				becker@scyld.com
Scyld Computing Corporation		http://www.scyld.com
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