FW2X_FW_CAP_ASYM_PAUSE
mpi_ctrl |= FW2X_FW_CAP_ASYM_PAUSE;
mpi_ctrl &= ~(FW2X_FW_CAP_PAUSE | FW2X_FW_CAP_ASYM_PAUSE);
*fc = (mpi_state & (FW2X_FW_CAP_PAUSE | FW2X_FW_CAP_ASYM_PAUSE)) >>