HW_ATL_FW2X_MPI_CONTROL_ADDR
aq_hw_write_reg(self, HW_ATL_FW2X_MPI_CONTROL_ADDR, val);
low_req = aq_hw_read_reg(hw, HW_ATL_FW2X_MPI_CONTROL_ADDR);
aq_hw_write_reg(hw, HW_ATL_FW2X_MPI_CONTROL_ADDR, low_req);
low_req = aq_hw_read_reg(self, HW_ATL_FW2X_MPI_CONTROL_ADDR);
aq_hw_write_reg(self, HW_ATL_FW2X_MPI_CONTROL_ADDR, low_req);