REG_MAC_PROTOCOL_DATA
ql_write_reg(qlge, REG_MAC_PROTOCOL_DATA /* 0xAC */, data2);
ql_write_reg(qlge, REG_MAC_PROTOCOL_DATA, lower);
ql_write_reg(qlge, REG_MAC_PROTOCOL_DATA, upper);
ql_write_reg(qlge, REG_MAC_PROTOCOL_DATA,
ql_read_reg(qlge, REG_MAC_PROTOCOL_DATA);