RGE_CSIAR_BUSY
(RGE_CSIAR_BYTE_EN << RGE_CSIAR_BYTE_EN_SHIFT) | RGE_CSIAR_BUSY);
if (!(RGE_READ_4(sc, RGE_CSIAR) & RGE_CSIAR_BUSY))
if (RGE_READ_4(sc, RGE_CSIAR) & RGE_CSIAR_BUSY)