I'm guessing the ethernet problems are hardware/board related. Take a
look at the PHY and make sure it's working OK.
Pete
On Fri, 2005-08-05 at 21:39 +0200, Sylvain Munaut wrote:
> Hello,
>
> I've been trying to adapt linux ( the HEAD CVS version ) to a
> custom board based around a Au1100. To be more precise, the board
> use a "cpu module" (CSB650 from Cogent
> http://www.cogcomp.com/csb_csb650.htm ) that's placed on a custom PCB.
>
>
> I've compiled and booted a kernel sucessfully, I see the message on the
> serial console. It's in Big Endian mode since the boot loaded on the
> card is big endian only and I could manage to get it to switch to little
> endian ...
>
> Now, let's go on with the problems :
>
> * About USB. First time I tried, it just hung but I quicly found out
> that it was because I didn't route the 48Mhz clock to USB module. After
> that, I had to slightly adapt the ohci bus glue to enable the OHCI big
> endian mode. After that, when a USB stick is inserted, it gets detected,
> I can mount it and read small files. But when I try to read bigger files
> ( just 1 or 2 MB ), I get stuff like :
>
> [4294743.146000] usb 1-1: reset full speed USB device using au1xxx-ohci
> and address 2
>
> [4294743.618000] usb 1-1: reset full speed USB device using au1xxx-ohci
> and address 2
>
> [4294743.891000] usb 1-1: reset full speed USB device using au1xxx-ohci
> and address 2
>
> [4294744.151000] usb 1-1: reset full speed USB device using au1xxx-ohci
> and address 2
>
> [4294744.328000] au1xxx-ohci au1xxx-ohci.0: bad entry 4b
>
>
> [4294744.346000] au1xxx-ohci au1xxx-ohci.0: bad entry ac450000
>
>
> [4294744.363000] au1xxx-ohci au1xxx-ohci.0: bad entry 8f820014
>
>
> [4294744.381000] au1xxx-ohci au1xxx-ohci.0: bad entry 38210001
>
>
> [4294744.495000] hub 1-0:1.0: port 1 disabled by hub (EMI?),
> re-enabling...
>
> [4294744.515000] usb 1-1: USB disconnect, address 2
>
>
> [4294745.532000] au1xxx-ohci au1xxx-ohci.0: IRQ INTR_SF lossage
>
>
> [4294745.532000] usb 1-1: sg_complete, unlink --> -19
>
>
> [4294745.532000] usb 1-1: sg_complete, unlink --> -19
>
>
>
>
> Which means absolutly nothing to me ;( Has anyone got a clue ?
> I can't say for sure it's not hardware but the cpu module is used by
> others and on the base board, it's just a couple of differential pair
> with 90ohm differential impedance, nothing more ...
>
>
> * About ethernet : It works, I have a network access. However I have
> two kind of errors. On the RX side, I get quite a lot of "rx miss"
> errors (when au1x00_eth debug is on). About 5% of packets are dropped.
> That's not _too_ much of a problem as log as it doesn't increase. But
> what can that be due too ?
>
> A more annoying problem is that I get a lot of :
> [ 506.397000] NETDEV WATCHDOG: eth0: transmit timed out
>
>
> [ 506.412000] eth0: au1000_tx_timeout: dev=8048b400
>
> theses are quite comment when I transmitt a lot
> and they completly ruin the transmission
> (_real_ slow !).
>
> Heres is some stats from ifconfig :
>
> RX packets:50496 errors:76 dropped:76 overruns:0 frame:0
>
>
> TX packets:49573 errors:47 dropped:0 overruns:0 carrier:74
>
>
>
>
>
> Any insight / suggestion is appreciated, I'm getting desperate ;)
>
>
> Sylvain
>
>
>
>
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