RT2860_TXWI_DMASZ
(caddr_t)txwi - sc->txwi_vaddr, RT2860_TXWI_DMASZ,
size = RT2860_TX_POOL_COUNT * RT2860_TXWI_DMASZ;
vaddr += RT2860_TXWI_DMASZ;
paddr += RT2860_TXWI_DMASZ;
RT2860_TX_POOL_COUNT * RT2860_TXWI_DMASZ);