Problem with MPC8260 buffer descriptor

[Dominique Letty]

I don't find any information about this ECE bit in MPC8260UM and 603eUM.
Where can I enable it?

Thinks for your help.

Dominique
-----Message d'origine-----
De : John Nikiforos [mailto:ppclinuxuser at yahoo.gr]
Envoye : jeudi 17 octobre 2002 09:57
A : acurtis at onz.com; Dominique Letty; linuxppc-embedded at lists.linuxppc.org
Objet : RE: Problem with MPC8260 buffer descriptor


 Is the ECE bit enabled?
(Cache coherency for the 8260, so that the
CPM wont get any stalled data)

                    John

 --- Allen Curtis <acurtis at onz.com> έγραψε: >
> > Now I try to port this driver under Linux 2.4.17
> Kernel for a MPC8260. I
> > have allocated
> > Buffer Descriptors in DPRAM and Data Buffers in
> SDRAM. When I try
> > to send a
> > buffer, I fill
> > a data buffer and the first BD registers, I think,
> with the
> > correct values.
> > It doesn't work
> > anytimes. When the buffer is transmited, the
> sending data are correct. The
> > problem seems to
> > come from the CPM which can't access to the BD
> modifications in the DPRAM.
> >
> > Does anyone have already meet these problems?
>
> Would it be a problem to post your:
>
> 1. GSMRH & GSRM_L initialization
> 2. SCC Parameter RAM configuration
> 3. Location of your BDs in DPRAM
>
> THX
>
>
>


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