RE : Some questions about the Xilinx Temac driver. | linuxppc-dev

(off-list ancestor, not in this archive)

Hi Ming

You will find informations to build linux 2.6 BSP in the file
EDK_8.2\sw\ThirdParty\bsp\linux_2_6_v1_00_a\doc\linux_2_6_v1_00_a.pdf=20

This file is installed with plateform Studio

Regards

Chris

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Tel : 02.38.49.45.59
Fax :02.38.49.45.55
Email : christophe.alayrac@cresitt.com=20
Web : http://www.cresitt.com


<----> -----Message d'origine-----
<----> De : linuxppc-embedded-
<----> bounces+christophe.alayrac=3Dcresitt.com@ozlabs.org =
[mailto:linuxppc-
<----> embedded-bounces+christophe.alayrac=3Dcresitt.com@ozlabs.org] De =
la
<----> part de Ming Liu
<----> Envoy=C3=A9 : jeudi 30 novembre 2006 17:37
<----> =C3=80 : mgalassi@c-cor.com
<----> Cc : linuxppc-embedded@ozlabs.org
<----> Objet : Re: Some questions about the Xilinx Temac driver.
<---->=20
<----> 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.
<---->=20
<----> BR
<----> Ming
<---->=20
<---->=20
<----> >From: Michael Galassi [off-list ref]
<----> >Reply-To: Michael Galassi [off-list ref]
<----> >To: "Ming Liu" [off-list ref]
<----> >CC: akonovalov@ru.mvista.com, linuxppc-embedded@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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