MB_TX_CID_ADDR
REG_WR16(sc, MB_TX_CID_ADDR + BNX_L2CTX_TX_HOST_BIDX, sc->tx_prod);
REG_WR(sc, MB_TX_CID_ADDR + BNX_L2CTX_TX_HOST_BSEQ, sc->tx_prod_bseq);