CPU_TO_DMA
hw->src_addr = CPU_TO_DMA(chan, snoop_bits | src, 64);
hw->dst_addr = CPU_TO_DMA(chan, snoop_bits | dst, 64);
hw->next_ln_addr = CPU_TO_DMA(chan, snoop_bits | next, 64);
desc->hw.next_ln_addr = CPU_TO_DMA(chan,
hw->count = CPU_TO_DMA(chan, count, 32);