mpc8548 does not make use of DMA when doing memory copy?

[hank peng]

Kernel version is 2.6.30 and I have enabled fsl DMA engine during
configuring kernel. After system booted, I have seen only 38 DMA
interrupts, and no increase later when I am doing data transfer
through network.
So I wonder if mpc8548  had made use of DMA engine when doing memcpy,
or maybe if there are other things I haven't noticed?

-- 
The simplest is not all best but the best is surely the simplest!