xilinx ML310 board PCI DMA problem

Hi! all!
I have a problem with runing PCI DMA example provided by Xilinx EDK
install CD on ML310 board. The file xpci_example_level_1.c try to write
destination, source , byte length into DAM control register start at
0x3d000000, but whenever it do that it cause OPB bus error, i
appreciate any help on this. Also another example,
xemac_intr_simple_dma_example, can't even be compiled as some
parameters are not defined, and search in all files, i didn't find it.
So what can i say about Xilix?

could you explain your first more in depth? because i did solve this.
could you also explain your nature of work with ML310