October 2017
Intermediate to advanced
586 pages
14h 8m
English
Content preview from Linux Device Drivers Development
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Summary
DMA is a feature that one finds in many modern CPUs. This chapter introduced the necessary steps to get the most out of this device, using the kernel DMA mapping and DMA engine APIs. After this chapter, I have no doubt you will be able to set up at least a memory-to-memory DMA transfer. You can find further information at Documentation/dmaengine/, in the kernel source tree. The next chapter deals with an entirely different subject—the Linux device model.