static void virtio_9p_get_config(VirtIODevice *vdev, uint8_t *config) { struct virtio_9p_config *cfg; V9fsState *s = to_virtio_9p(vdev); cfg = qemu_mallocz(sizeof(struct virtio_9p_config) + s->tag_len); stw_raw(&cfg->tag_len, s->tag_len); memcpy(cfg->tag, s->tag, s->tag_len); memcpy(config, cfg, s->config_size); qemu_free(cfg); }
/* coalesce internal state, copy to pci i/o region 0 */ static void virtio_blk_update_config(VirtIODevice *vdev, uint8_t *config) { VirtIOBlock *s = to_virtio_blk(vdev); struct virtio_blk_config blkcfg; uint64_t capacity; int blk_size = s->conf->logical_block_size; bdrv_get_geometry(s->bs, &capacity); memset(&blkcfg, 0, sizeof(blkcfg)); stq_raw(&blkcfg.capacity, capacity); stl_raw(&blkcfg.seg_max, 128 - 2); stw_raw(&blkcfg.cylinders, s->conf->cyls); stl_raw(&blkcfg.blk_size, blk_size); stw_raw(&blkcfg.min_io_size, s->conf->min_io_size / blk_size); stw_raw(&blkcfg.opt_io_size, s->conf->opt_io_size / blk_size); blkcfg.heads = s->conf->heads; /* * We must ensure that the block device capacity is a multiple of * the logical block size. If that is not the case, lets use * sector_mask to adopt the geometry to have a correct picture. * For those devices where the capacity is ok for the given geometry * we dont touch the sector value of the geometry, since some devices * (like s390 dasd) need a specific value. Here the capacity is already * cyls*heads*secs*blk_size and the sector value is not block size * divided by 512 - instead it is the amount of blk_size blocks * per track (cylinder). */ if (bdrv_getlength(s->bs) / s->conf->heads / s->conf->secs % blk_size) { blkcfg.sectors = s->conf->secs & ~s->sector_mask; } else { blkcfg.sectors = s->conf->secs; } blkcfg.size_max = 0; blkcfg.physical_block_exp = get_physical_block_exp(s->conf); blkcfg.alignment_offset = 0; blkcfg.wce = bdrv_enable_write_cache(s->bs); memcpy(config, &blkcfg, sizeof(struct virtio_blk_config)); }
static void virtio_9p_get_config(VirtIODevice *vdev, uint8_t *config) { int len; struct virtio_9p_config *cfg; V9fsState *s = to_virtio_9p(vdev); len = strlen(s->tag); cfg = g_malloc0(sizeof(struct virtio_9p_config) + len); stw_raw(&cfg->tag_len, len); /* We don't copy the terminating null to config space */ memcpy(cfg->tag, s->tag, len); memcpy(config, cfg, s->config_size); g_free(cfg); }
/* coalesce internal state, copy to pci i/o region 0 */ static void virtio_blk_update_config(VirtIODevice *vdev, uint8_t *config) { VirtIOBlock *s = to_virtio_blk(vdev); struct virtio_blk_config blkcfg; uint64_t capacity; int cylinders, heads, secs; int blk_size = s->conf->logical_block_size; bdrv_get_geometry(s->bs, &capacity); bdrv_get_geometry_hint(s->bs, &cylinders, &heads, &secs); memset(&blkcfg, 0, sizeof(blkcfg)); stq_raw(&blkcfg.capacity, capacity); stl_raw(&blkcfg.seg_max, 128 - 2); stw_raw(&blkcfg.cylinders, cylinders); stl_raw(&blkcfg.blk_size, blk_size); stw_raw(&blkcfg.min_io_size, s->conf->min_io_size / blk_size); stw_raw(&blkcfg.opt_io_size, s->conf->opt_io_size / blk_size); blkcfg.heads = heads; blkcfg.sectors = secs & ~s->sector_mask; blkcfg.size_max = 0; blkcfg.physical_block_exp = get_physical_block_exp(s->conf); blkcfg.alignment_offset = 0; memcpy(config, &blkcfg, sizeof(struct virtio_blk_config)); }
static void virtio_blk_update_config(VirtIODevice *vdev, uint8_t *config) { VirtIOBlock *s = to_virtio_blk(vdev); struct virtio_blk_config blkcfg; uint64_t capacity; int cylinders, heads, secs; bdrv_get_geometry(s->bs, &capacity); bdrv_get_geometry_hint(s->bs, &cylinders, &heads, &secs); stq_raw(&blkcfg.capacity, capacity); stl_raw(&blkcfg.seg_max, 128 - 2); stw_raw(&blkcfg.cylinders, cylinders); blkcfg.heads = heads; blkcfg.sectors = secs; memcpy(config, &blkcfg, sizeof(blkcfg)); }