IF_SDIO_IOPORT
card->ioport = sdio_readb(func, IF_SDIO_IOPORT, &ret);
card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 1, &ret) << 8;
card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 2, &ret) << 16;