ACK_INTR
outw(ACK_INTR | INT_LATCH | TX_AVAILABLE | RX_EARLY | INT_REQ,
outw(ACK_INTR | TX_AVAILABLE, ioaddr + EL3_CMD);
outw(ACK_INTR | RX_EARLY, ioaddr + EL3_CMD);
outw(ACK_INTR | ADAPTER_FAILURE,
outw(ACK_INTR | 0xFF, ioaddr + EL3_CMD);
outw(ACK_INTR | INT_REQ | INT_LATCH, ioaddr + EL3_CMD);