DMA transfer within kernel space

Hi,

I am new to linux device driver development and I'm trying to learn the
DMA transfer. Currently I have created a  DMA buffer using
pci_alloc_consistent() function. Since I don't have a real DMA enabled pci
device, so I am thinking of transfer the data in the DMA buffer to some
other buffer within kernel space(let say created through kmalloc) using
DMA.

Is it possible to do DMA transfer within kernel space? If yes, please
provide some sample code for the same.

Thanks in advance
Ravi Gupta