ATA_DMA_ENTRIES
ATA_DMA_ENTRIES, ch->dma.segsize,
KASSERT(nsegs <= ATA_DMA_ENTRIES, ("too many DMA segment entries\n"));
ch->dma.max_iosize = (ATA_DMA_ENTRIES - 1) * PAGE_SIZE;
ATA_DMA_ENTRIES, ch->dma.segsize,
KASSERT(nsegs <= ATA_DMA_ENTRIES, ("too many DMA segment entries\n"));