MSCI0_OFFSET
u8 stat = sca_in(MSCI0_OFFSET + ST1, port); /* read MSCI ST1 status */
sca_out(stat & (ST1_UDRN | ST1_CDCD), MSCI0_OFFSET + ST1, port);
sca_out(IE1_UDRN, MSCI0_OFFSET + IE1, port);
sca_out(IE0_TXINT, MSCI0_OFFSET + IE0, port);
#define get_msci(port) (phy_node(port) ? MSCI1_OFFSET : MSCI0_OFFSET)
#define get_msci(port) ((port)->chan ? MSCI1_OFFSET : MSCI0_OFFSET)
sca_out(EXS_TES1, (port->chan ? MSCI1_OFFSET : MSCI0_OFFSET) + EXS,
sca_out(EXS_TES1, (port->chan ? MSCI1_OFFSET : MSCI0_OFFSET) + EXS,