[vortex] FEM656C NIC problems with kernel 2.4

[Andrew Morton]

Time to call in the big guns.  Hi, Jeff.

Felipe, I think we'll need to see the `lspci -vx' output,
as well as the relevant kernel boot messages.


Felipe Alfaro Solana wrote:
> 
> Hello,
> 
> I have a 3Com FEM656C CardBus NIC (aka Tornado) installed on my
> PackardBell Chrom@ computer. I have RedHat Linux 7.0 distribution
> installed currently running with kernel 2.2.16/2.2.17. The NIC works
> fine when I use the 2.2 kernel, but when I turn to the 2.4 kernel, the
> NIC is nonfunctional. Let me explain my guessing:
> 
> Using "lspci", I have found that kernel 2.2 performs correct resource
> allocation. The FEM656C is a Fast Ethernet controller + 56K modem. The
> kernel 2.2 assigns I/O ports in range 0x1100-0x11ff for the Ethernet
> function of the adapter, and assigns I/O ports in the range
> 0x1000-0x10ff for the modem function of the adapter. However, linux
> kernel 2.4 seems to assign I/O ports in the range 0x1000-0x10ff for both
> adapter functions, overlapping the I/O ports range for both the Ethernet
> function and the modem function in the adapter.
> 
> When I boot into kernel 2.4, the NIC is nonfunctional as both adapter
> functions are enabled and sharing the I/O ports range. This results in
> the kernel and the vortex-diag tool reporting that my MAC address is
> FF:FF:FF:FF:FF:FF (which, of course, is not correct). The vortex-diag
> tools is gathering information bith all bits set to to 1, and this
> explains why my MAC address is a network broadcast address and all
> registers are set to FF. If you want more information, I will post all
> the information Igathered from the 2.2 and 2.4 kernels.
> 
> Although I am no kernel hacker, I think all of this is due to a bad
> resource assignment done by the PCI drivers in linux kernel and not the
> vortex driver itself. However, I don't know a better place to start this
> thread and who can I send this information to.
> 
> Can anyone help me troubleshoot why Linux is assigning the same I/O
> ports range to both functions of my 3Com adapter? Can anyone help me
> fixing or forcing resource allocation for the card?
> 
> Thank you very much.
> Sincerely,
> 
>    Felipe Alfaro Solana
> 
> PD: You can contact me at e-mail falfaro@sunformacion.com or
> felipe_alfaro@email.com.
> 
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