SDState *sd_init(BlockDriverState *bs, bool is_spi) { SDState *sd; if (bs && bdrv_is_read_only(bs)) { fprintf(stderr, "sd_init: Cannot use read-only drive\n"); return NULL; } sd = (SDState *) g_malloc0(sizeof(SDState)); sd->buf = qemu_blockalign(bs, 512); sd->spi = is_spi; sd->enable = true; sd_reset(sd, bs); if (sd->bdrv) { bdrv_attach_dev_nofail(sd->bdrv, sd); bdrv_set_dev_ops(sd->bdrv, &sd_block_ops, sd); } vmstate_register(NULL, -1, &sd_vmstate, sd); return sd; }