SATA_RCAR_INT_MASK
iowrite32(~(u32)SATA_RCAR_INT_MASK, base + SATAINTSTAT_REG);
iowrite32(priv->sataint_mask & ~SATA_RCAR_INT_MASK, base + SATAINTMASK_REG);
sataintstat &= SATA_RCAR_INT_MASK;