A_XGM_TX_CTRL
t3_write_reg(adapter, A_XGM_TX_CTRL + pi->mac.offset, F_TXEN);
t3_write_reg(adapter, A_XGM_TX_CTRL, 0);
t3_write_reg(adapter, XGM_REG(A_XGM_TX_CTRL, 1), 0);
t3_write_reg(adap, A_XGM_TX_CTRL + oft, F_TXEN);
t3_write_reg(adap, A_XGM_TX_CTRL + mac->offset, 0);
t3_write_reg(adap, A_XGM_TX_CTRL + mac->offset, 0);
t3_read_reg(adap, A_XGM_TX_CTRL + mac->offset); /* flush */
t3_write_reg(adap, A_XGM_TX_CTRL + mac->offset, mac->txen);
t3_read_reg(adap, A_XGM_TX_CTRL + mac->offset); /* flush */
{A_XGM_TX_CTRL, 0},