Sony Ericsson GC85 GPRS/EDGE pcmcia card

[Espen Tagestad]

Hi,

I am really stucked here. Recently I bought one of those Sony Ericsson 
GC85 cards hoping it could replace the serial cable and my cell phone 
connected to my laptop.

Unfortunatly it does not seem to work very well. The card is recognized 
as a generic modem on the pcmcia bus, and shows up as a cuaa (sio) 
device. I can talk to it without problems with cu and minicom.

I've configured ppp to call my local ISP (Telenor) with GPRS. That works 
in some way. My modem gets connected and I can ping other hosts and do 
simple telnet commands to get data from webservers and other services. 
But, when connecting with ssh it just hangs. That happens when I try to 
get compressed data from the network as well.

Some data: I'm running 4.11-STABLE on a Acer Travelmate 630 series 
laptop. The output from pccardd from startup shows this line after 
adding the sio-device as a generic modem:

sio2: unable to activate interrupt in fast mode - using normal mode

When trying to do some activity on the network after connecting this 
messages shows up in my log:

sio2: xxx more interrupt-level buffer overflows (total xxx)

(xxx is a number)

I've read a lot of documentation on the net about this issue, and I 
think I've tried most of the tips and tricks suggested. I tried to 
change the irq assigned for the card without luck, I have set the 
cp4ticks to 4096 in sio.c (that removed the interrupt-level buffer 
overflows in the log, but then network still don't work as it should), I 
changed the list of available irqs in pccard.conf, and I really don't 
know what to do next.

The irq seems to be hardcoded to 3, but in Windows it shows up with irq 
7, which in the FreeBSD log I get a message like this: stray irq 7. The 
card works well in Windows, so I don't think is a hardware problem.

Does anyone have any tips or suggestions on how to get this card to work 
properly with FreeBSD? Has anyone managed to get this card, or some of 
the other Sony-Ericsson GC-cards, to work at all with FreeBSD?

Another one with the same problem as I (I guess) can be found here:
http://lists.freebsd.org/mailman/htdig/freebsd-mobile/2004-May/003813.html

PS. The reason why I don't run FreeBSD 5 is that it just don't work on 
thia laptop at all.

regards,

Espen Tagestad