I know that there are four ways to access hardware
buffers:
DMA,
Interrupts, Memory Maps, I/O
ports
I do know that to acces the IO ports, you could use
import() or outport() functions; you could also access memory maps through
_386_map_physical_address() function. You could also access SOFTWARE interrupts
through int386() function.
QUESTION: How do you access DMA and Hardware
Interrupts of the system?