Take a look at -
www.cypress.com/file/48886 CE56273 – SPI With DMA in PSoC® 3 / PSoC 5
http://www.cypress.com/documentation/application-notes/an52705-psoc-3-and-psoc-5lp-getting-started-dma AN52705 Getting Started with DMA
http://www.cypress.com/documentation/application-notes/an84810-psoc-3-and-psoc-5lp-advanced-dma-topics AN84810 PSoC® 3 and PSoC 5LP Advanced DMA Topics
http://www.cypress.com/documentation/application-notes/an61102-psoc-3-and-psoc-5lp-adc-data-buffering-using-dma AN61102 PSoC® 3 and PSoC 5LP - ADC Data Buffering Using DMA
http://video.cypress.com/video-library/search/dma/ Videos on DMA
https://www.youtube.com/results?search_query=dma+psoc Videos on DMA (some overlap)
Please let us know what is width of databytes for the SPI?