Re: problems with pcnet_cs and powerpc

On Mon, Jun 30, 2003 at 06:15:17PM +0200, Oliver Kurth wrote:
> Hello!
> 
> I am trying to get a Linksys "EtherFast 10&100 + 56K PC Card (PCMLM56)" 
> (0x0143, 0xc0ab) running on an ACS. This is an embedded device running
> Linux 2.4.17. The CPU is a MPC855T (ie. a powerpc). The problem is 
> exactly here in pcnet_cs.c:
> 
> static hw_info_t *get_dl10019(dev_link_t *link)
> {
>     struct net_device *dev = link->priv;
>     int i;
>     u_char sum;
>                                                                                                                                              
>     for (sum = 0, i = 0x14; i < 0x1c; i++)
>         sum += inb_p(dev->base_addr + i);
>     if (sum != 0xff)
>         return NULL;
>     for (i = 0; i < 6; i++)
>         dev->dev_addr[i] = inb_p(dev->base_addr + 0x14 + i);
>     i = inb(dev->base_addr + 0x1f);
>     return ((i == 0x91)||(i == 0x99)) ? &dl10022_info : &dl10019_info;
> }
> 
> I uncommented the 'if (sum != 0xff)' part, because that check never 
> passes. The reason is that every odd byte read with inb_p is wrong, and 
> each time different when I reinsert the card or reboot. The _even_ bytes 
> are correct when I compare them with the hardware address.

I solved that problem, it was in m8xx_pcmcia.c. I changed there in 
m8xx_set_io_map() the line
if(io->flags & (MAP_16BIT | MAP_AUTOSZ))
to
if(io->flags & (MAP_16BIT))

I can now read the hardware address correctly - it seems that the card 
has to be configured for 8bit access. But network does not work. If I
do a ping to another host connected with a cross link cable, I see 
garbled packages with weird src and dst addresses with ethereal.

I am stuck...

I still believe it's a problem with m8xx_pcmcia, but I do not know 
where. And it's hard to me to belive that the card is only 8bit.

Greetings,
Oliver

-- 
  .''`.
 : :' :    Oliver Kurth [email protected]
 `. `'           Debian GNU/Linux maintainer - www.debian.org
   `-

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