DMA_STREAM
mapping = (flags&DMA_STREAM)?DDI_DMA_STREAMING:DDI_DMA_CONSISTENT;
rbp->cs_buf = (caddr_t)ch_alloc_dma_mem(sa, 1, DMA_STREAM|DMA_SMALN,
rbp->cs_buf = (caddr_t)ch_alloc_dma_mem(sa, 0, DMA_STREAM|DMA_SMALN,
rbp->cs_buf = (caddr_t)ch_alloc_dma_mem(sa, 1, DMA_STREAM|DMA_BGALN,
rbp->cs_buf = (caddr_t)ch_alloc_dma_mem(sa, 0, DMA_STREAM|DMA_BGALN,