how to launch DMA by host port in own IP?

[Altera_Forum]

I designed a image capture IP with FIFO and DMA. I don't know how to desige the host port to launch the DMA which transfer the data from FIFO to sdram. I don't know how to relate the host port with DMA. 

Thanks very much!

[Altera_Forum]

I'm sorry I can't see the links due to my low posts. 

But I want design it myself.Also the exiting ip is not suit for earlier device such as cyclone.

[Altera_Forum]

hi,skw2xx 

what is the meaning of host port ,cpu?

[Altera_Forum]

I am sorry. Actully,I mean the Avalon Memory-Mapped Master port.

[Altera_Forum]

--- Quote Start ---  I am sorry. Actully,I mean the Avalon Memory-Mapped Master port.  --- Quote End ---   in my opinion,DMA transfer is lauched by CPU,FPGA is slave,only receive DMA command and response.