Re: Virtex TEMAC 1000Mb/s trouble, but 100b/s is working

[Lorenz Kolb <linuxppcemb@lkmail.de>]

alex_snippet wrote:
> 
> Hi all!
> 
> I'm porting Linux for custom board based on Virtex4 FX, vanilla kernel
> 2.6.22.5 , Xilinx EDK 9.1 BSP, 
> ELDK41 - cross-compiler 
> target nfs-root pointed to ELDK41/ppc_4xx
> 
> Kernel command line:
> Linux/PPC load: root=/dev/nfs rw console=ttyS0,9600
> nfsroot=192.168.0.1:/target
> ip=on
> 
> All work successfully was done, i tested all at 100Mb's connection speed,
> but yesterday my customer said that with 1Gbit connection it did't work :(
> end of log following:
> 
>     3.341532] eth0: XTemac: Options: 0xb8f2
> [   11.855386] eth0: XTemac: We renegotiated the speed to: 1000
> [   11.923237] eth0: XTemac: speed set to 1000Mb/s
> [   13.000064] Sending DHCP requests ......, OK
> [   65.484075] IP-Config: Got DHCP answer from 0.0.0.0, my address is
> 192.168.0.
> 192
> [   65.573684] IP-Config: Complete:
> [   65.610416]       device=eth0, addr=192.168.0.192, mask=255.255.255.0,
> gw=192
> .168.0.1,
> [   65.705572]      host=192.168.0.192, domain=, nis-domain=(none),
> [   65.777872]      bootserver=0.0.0.0, rootserver=192.168.0.1, rootpath=
> [   65.861982] Looking up port of RPC 100003/2 on 192.168.0.1
> [   65.929093] Looking up port of RPC 100005/1 on 192.168.0.1
> [   66.024134] VFS: Mounted root (nfs filesystem).
> [   66.079160] Freeing unused kernel memory: 104k init
> [   71.640314] nfs: server 192.168.0.1 not responding, still trying
> [   76.040311] nfs: server 192.168.0.1 not responding, still trying
> 
> Load process was friezed at this point. When connection speed is 100Mb/s
> everything is ok.
> 
> Please advise me what to do, i tried to increase ppc core frequency from
> 100 to 300 MHz - the same problem. 
> When i'm using virtual machine instead of real hardware it's working on
> 1000Gb/s :) but isn't on real hardware.
> 

We have it working for our ML403. But we are not using the builtin-support
from the kernel.
We are using an initrd/initramfs for mounting the NFS (as this is much
easier for debugging (you can get a shell)).


alex_snippet wrote:
> 
> I'm using Fedora 7 as a host.
> 

We had problems with ubuntu as a host. Debian (Kernel 2.6.18) works fine for
us.


alex_snippet wrote:
> 
> May be there are some nfs-demon settings?
> 

we use

tcp,no_lock

here.

Regards,

Lorenz Kolb
ESIC-Solutions
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