TX_STATUS_DESC0_REG
tx_status = rtls_reg_get32(rtlsp, TX_STATUS_DESC0_REG + 4 * cur_desc);
TX_STATUS_DESC0_REG + 4 * cur_desc);
rtls_reg_set32(rtlsp, TX_STATUS_DESC0_REG + 4 * cur_desc,
val32 = rtls_reg_get32(rtlsp, TX_STATUS_DESC0_REG);