Problem with MPC8260 buffer descriptor

Allen Curtis acurtis at onz.com
Thu Oct 17 01:15:21 EST 2002


> 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


** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/





More information about the Linuxppc-embedded mailing list