Asymmetrical type various mixed multiprocessor environment (asymmetric heterogeneous multiprocessor environment) the memory barrier element in (Primitive)

摘要

SolutionsAs for this invention, it regards memory barrier formation method and the device in the DMA device. Memory barrier command memory command is received. Memory command is executed on the basis of memory barrier command. Bus operation is started on the basis of memory barrier command. Bus operation approval is received on the basis of bus operation. Memory barrier command is executed on the basis of bus operation approval. Especially, as for memory barrier command it is dmasync command and dmaeieio command. Selective figure Figure 1