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- Some minor tweaks and updates to bus_dma(9) including some additional notes on the address filter and locking callback. - Mark "highaddr" and "lowaddr" appropriately. Change "dma" to "DMA". - Fix spelling mistage found by rodrigc@. - Document BUS_DMA_NOCACHE. - Remove unneeded comma. - For maximum flexibility, sparc64 supports BUS_DMA_COHERENT also with bus_dmamap_create() and not only bus_dmamem_alloc() so move the description of this flag up accordingly in order to document this fact. While at, it refine this description with an application example.