[tulip] 21041<->cable modem, led dark, kernel > 2.4.18

[Donald Becker]

On Mon, 5 Aug 2002, Florian wrote:

> redhat 7.3 uses 2 tulip versions in its kernel/sources. old works new 
> not - without options.

What driver versions?

You should be using the driver at
   http://www.scyld.com/network/tulip.html
      ftp://www.scyld.com/pub/network/tulip.c

Niether tulip driver in the kernel is an unmodified release, and the
modified versions have been broken throughout the 2.4 kernel, most
notably with 21041 and 21143+SYM designs.

> tulip_old finds all the right settings which are:
> 
> tulip-diag.c:v2.11 6/17/2002 Donald Becker (becker@scyld.com)
>  http://www.scyld.com/diag/index.html
> Index #1: Found a Digital DC21041 Tulip adapter at 0xd000.
>  Port selection is half-duplex.
>  Transmit started, Receive started, half-duplex.
>   The Rx process state is 'Waiting for packets'.
>   The Tx process state is 'Idle'.
>   The transmit unit is set to store-and-forward.
>   The NWay status register is 000001c8.

What is your link partner?

>   The NWay status register is 000050c8.

Autonegotation is complete, but there is no link partner code word.

> now with "insmod tulip options=4" and working:

Media type 4 should set 10baseT-FDX (serial, not MII).

>  Port selection is full-duplex.
>  Transmit started, Receive started, full-duplex.
...
>   The NWay status register is 000001c8.
...
> the nway value is back to "000001c8"!

There is no autonegotation with a forced media type.


-- 
Donald Becker				becker@scyld.com
Scyld Computing Corporation		http://www.scyld.com
410 Severn Ave. Suite 210		Second Generation Beowulf Clusters
Annapolis MD 21403			410-990-9993