Broken support for 3Com 3c575C Fast Etherlink XL?

[Jens Andre Griepentrog]

>  Tue, 17 May 2005 11:31:46 -0400
>  Chris Buechler <cbuechler at gmail.com> wrote:
>
>  On 5/17/05, Jens Andre Griepentrog <griepent at wias-berlin.de> wrote:
>  > 
>  >   Hello,
>  > 
>  >   I have upgraded my Compaq Armada 1750 notebook to FreeBSD 5.4-RELEASE.
>  >   In contrast to the old 5.1-RELEASE, now the support for my 3Com 3c575C
>  >   Fast Etherlink XL cardbus network device seems to be broken.
>  >   It will not be initialized as you can see in the dmesg output below:
>  > 
>  <snip>
>  > uhci0: <Intel 82371AB/EB (PIIX4) USB controller> port 0x2000-0x201f irq 11 at device 7.2 on pci0
>  <snip>
>  > xl0: <3Com 3c575C Fast Etherlink XL> port 0x1100-0x117f mem 0x88000000-0x8800007f,0x88000080-0x880000ff irq 11 at device 0.0 on cardbus0
>  
>  
>  My 3c575C (xl) works fine on 5.4.  My first guess would be the USB and
>  NIC using the same IRQ is causing some problems.
>  
>  -Chris
>  

Dear Chris,

I have disabled the whole USB stuff. Moreover, to minimize further
side effects I have disconnected the PCMCIA Modem card; both without
success but with some extra message enlightening the interrupt storm:

<snip>
Interrupt storm detected on "irq11: cbb0 cbb1"; throttling interrupt source
cardbus0: Resource not specified in CIS: id=14, size=80
cardbus0: Resource not specified in CIS: id=18, size=80
xl0: <3Com 3c575C Fast Etherlink XL> port 0x1100-0x117f mem 0x88000000-0x8800007f,0x88000080-0x880000ff irq 11 at device 0.0 on cardbus0
xl0: reset didn't complete
xl0: command never completed!
xl0: command never completed!
xl0: eeprom failed to come ready
xl0: failed to read station address
device_attach: xl0 attach returned 6
<snip>

Looking at the source code now the 3Com 3c575C XL seems
to enjoy some special treatment in contrast to 5.1R.

Greetings,
Jens