static int virtio_blk_device_init(VirtIODevice *vdev) { DeviceState *qdev = DEVICE(vdev); VirtIOBlock *s = VIRTIO_BLK(vdev); VirtIOBlkConf *blk = &(s->blk); static int virtio_blk_id; if (!blk->conf.bs) { error_report("drive property not set"); return -1; } if (!bdrv_is_inserted(blk->conf.bs)) { error_report("Device needs media, but drive is empty"); return -1; } blkconf_serial(&blk->conf, &blk->serial); if (blkconf_geometry(&blk->conf, NULL, 65535, 255, 255) < 0) { return -1; } virtio_init(vdev, "virtio-blk", VIRTIO_ID_BLOCK, sizeof(struct virtio_blk_config)); vdev->get_config = virtio_blk_update_config; vdev->set_config = virtio_blk_set_config; vdev->get_features = virtio_blk_get_features; vdev->set_status = virtio_blk_set_status; vdev->reset = virtio_blk_reset; s->bs = blk->conf.bs; s->conf = &blk->conf; memcpy(&(s->blk), blk, sizeof(struct VirtIOBlkConf)); s->rq = NULL; s->sector_mask = (s->conf->logical_block_size / BDRV_SECTOR_SIZE) - 1; s->vq = virtio_add_queue(vdev, 128, virtio_blk_handle_output); #ifdef CONFIG_VIRTIO_BLK_DATA_PLANE if (!virtio_blk_data_plane_create(vdev, blk, &s->dataplane)) { virtio_cleanup(vdev); return -1; } #endif s->change = qemu_add_vm_change_state_handler(virtio_blk_dma_restart_cb, s); register_savevm(qdev, "virtio-blk", virtio_blk_id++, 2, virtio_blk_save, virtio_blk_load, s); bdrv_set_dev_ops(s->bs, &virtio_block_ops, s); bdrv_set_buffer_alignment(s->bs, s->conf->logical_block_size); bdrv_iostatus_enable(s->bs); add_boot_device_path(s->conf->bootindex, qdev, "/disk@0,0"); return 0; }