SDXC_SDIO_INTERRUPT
if (msk_int & SDXC_SDIO_INTERRUPT)
mmc_readl(host, REG_RINTR) & ~SDXC_SDIO_INTERRUPT);
host->sdio_imask = SDXC_SDIO_INTERRUPT;
imask |= SDXC_SDIO_INTERRUPT;
imask &= ~SDXC_SDIO_INTERRUPT;