sdmmc_mem_read_block
static int sdmmc_mem_read_block(struct sdmmc_softc*, uint32_t, u_char*, size_t);
if(sdmmc_mem_read_block(part->sc, offset, buf, s) == 0)
error = sdmmc_mem_read_block(sc->sc_sf, bp->b_rawblkno,
int sdmmc_mem_read_block(struct sdmmc_function *, uint32_t, u_char *,