Some questions about the Xilinx Temac driver.

[Ming Liu]

Dear Michael,
Now I update my Xilinx design software from 8.1 to 8.2 and notice that 
there is already linux_2_6 support. Then I generated the BSP for linux 2.6. 
I found that there are some differences from the older version, e.g. there 
are some files such as XMakefile, xps_connected.cud, etc. I am confused 
with this. So could you please give me a hand on how to use such a 
generated BSP to build my linux 2.6 kernel? I cannot find any guidance on 
how to do that. Thanks for your help. 

BR
Ming


>From: Michael Galassi <mgalassi at c-cor.com>
>Reply-To: Michael Galassi <mgalassi at c-cor.com>
>To: "Ming Liu" <eemingliu at hotmail.com>
>CC: akonovalov at ru.mvista.com, linuxppc-embedded at ozlabs.org
>Subject: Re: Some questions about the Xilinx Temac driver. 
>Date: Wed, 29 Nov 2006 08:38:37 -0800
>
>If you use the latest xilinx ISE/EDK/IP update and let it overlay your
>mvl source tree with it's files it shouldn't take you more than a few
>hours to patch things up to where you can compile a kernel which will
>work on the 3.00b IP.  The PHY support is useless but you can work
>around that easily enough.  I've not tried to get any of that working
>with a semi-current kernel so if you're not using mvl's flavor of 2.6.10
>you may run into other issues.
>
>-michael
>
> >Dear Andrei,
> >I have some questions about your xilinx Temac driver. If possible, 
please
> >give me a hand on such confusing problems.
> >
> >1. I am using the driver from
> >http://source.mvista.com/~ank/paulus-powerpc/20060309/, and the IP cores 
of
> >plb_temac and hard_temac whose hardware versions are 2.00a and 1.00a
> >specifically. I know the newest versions of those hardwares are 3.00a 
and
> >3.00a. Is your driver support the 3.00a version hardware? Also, is the
> >driver from http://source.mvista.com/~ank/paulus-powerpc/20060309/ the
> >latest one for Xilinx Temac? If you have some updated version, please 
tell
> >me the address.
> >
> >2. Is that driver from the above address able to support SGDMA? In fact, 
I
> >am testing the throughput of the Temac enet by my own little program 
which
> >is very simple. In the program running on the board, the pseudo code 
looks
> >just like this:
> >     for(;;){
> >           select();
> >           if(FD_ISSET()){
> >                 recvfrom();
> >           }
> >
> >           sendto();
> >     }
> >
> >The program is just to receive packets from a pc and then transfer them
> >back. But in this condition, the embedded PowerPC CPU is easily used by
> >100&. So I suspect that maybe the DMA is not running properly. Could you
> >please say something about the DMA in your driver?
> >
> >Thanks a lot for your telling.
> >
> >Regards
> >Ming
> >
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