sdmmc_io_read_1
rv = sdmmc_io_read_1(sf, addr);
cis->product = sdmmc_io_read_1(sf0, reg++);
cis->product |= sdmmc_io_read_1(sf0, reg++) << 8;
cis->cis1_major = sdmmc_io_read_1(sf0, reg++);
cis->cis1_minor = sdmmc_io_read_1(sf0, reg++);
ch = sdmmc_io_read_1(sf0, reg + i);
cisptr |= sdmmc_io_read_1(sf0, reg + 0) << 0;
cisptr |= sdmmc_io_read_1(sf0, reg + 1) << 8;
cisptr |= sdmmc_io_read_1(sf0, reg + 2) << 16;
tplcode = sdmmc_io_read_1(sf0, reg++);
tpllen = sdmmc_io_read_1(sf0, reg++);
cis->function = sdmmc_io_read_1(sf0, reg);
cis->manufacturer = sdmmc_io_read_1(sf0, reg++);
cis->manufacturer |= sdmmc_io_read_1(sf0, reg++) << 8;
rv = sdmmc_io_read_1(sf0, SD_IO_CCCR_FN_READY);
rv = sdmmc_io_read_1(sf0, SD_IO_CCCR_FN_ENABLE);
rv = sdmmc_io_read_1(sf0, SD_IO_CCCR_FN_ENABLE);
imask = sdmmc_io_read_1(sf0, SD_IO_CCCR_INT_ENABLE);
imask = sdmmc_io_read_1(sf0, SD_IO_CCCR_INT_ENABLE);
rv = sdmmc_io_read_1(sf, SD_IO_CCCR_BUS_WIDTH);
rv = sdmmc_io_read_1(sf, SD_IO_CCCR_SPEED);
u_int8_t sdmmc_io_read_1(struct sdmmc_function *, int);