WPI_TX_WIDX
WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur);
WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur);
WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur);
WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur);