BWI_RING_ALIGN
tx_ring_sz = roundup(desc_sz * BWI_TX_NDESC, BWI_RING_ALIGN);
rx_ring_sz = roundup(desc_sz * BWI_RX_NDESC, BWI_RING_ALIGN);
BWI_RING_ALIGN, 0,
BWI_RING_ALIGN, 0,
dma_size = roundup(desc_sz * BWI_TXSTATS_NDESC, BWI_RING_ALIGN);
BWI_RING_ALIGN,