using dma engine on MPC8555 processor

Hi All,
i have an evaluation board with MPC8555 processor.
linux kernel 2.6.27
i have read the Documentation of my board, i found that it contains DMA engine.
i know that there fsldma.c & fsldma.h
all my target is that i want to test the DMA on my board.
i want to transfer data from source to destination & i imagine that the DMA will raise an interrupt after it finishes the transfer.

so i believe there must be some APIs related to the DMA engine which do the following:
1. initialize the DMA by determining the src & dest addresses. Also determines which channel to use.
2. register an interrupt handler for the DMA interrupt line.
3. fire the DMA.

where can i find these APIs, or i m missing something? thanks in advance for ur help

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now I can understand that the file of the fsldma.c is the driver of the DMA engine that contains also a test the DMA.
I noticed that it contains 2 module init functions:
subsys_initcall(of_fsl_dma_chan_init); subsys_initcall(of_fsl_dma_init);

Also it contains two probe functions:
static int __devinit of_fsl_dma_chan_probe(struct of_device *dev,const struct of_device_id *match)
static int __devinit of_fsl_dma_probe(struct of_device *dev,const struct of_device_id *match)

How can i make these 2 probe functions work, i also noticed that fsldma.c cant be built as a module either it is built-in or not built.

is there something i should write in the command line to let fsldma works & tests the DMA engine i have on my board.

also i want to know the module "dmatest",what does it test exactly? can it test the DMA engine or not?
thanks for your help

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