MT_WFDMA0_RX_RING2_EXT_CTRL
mwx_write(sc, MT_WFDMA0_RX_RING2_EXT_CTRL, P(0x80, 0x4));
mwx_write(sc, MT_WFDMA0_RX_RING2_EXT_CTRL, P(0x40, 0x4));