dcache and 8260_io/fcc_enet.c

Joakim Tjernlund joakim.tjernlund at lumentis.se
Sat Nov 2 02:46:58 EST 2002

> I noticed that fcc_enet_start_xmit() does not flush the transmit data before
> setting up the transmit buffer descriptor. I get the impression that this is
> not necessary. But I don't understand why. I have spent the morning looking
> through code and Motorola docs and am non the wiser.

That's because the 8260 CPU understand the CPU caches and, while the 8xx does not
and therefore needs a flush_dcache_range().


> Thanks
> Dean

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

More information about the Linuxppc-embedded mailing list