예제 #1
0
파일: virtio-blk.c 프로젝트: Samsara00/qemu
static void virtio_blk_device_realize(DeviceState *dev, Error **errp)
{
    VirtIODevice *vdev = VIRTIO_DEVICE(dev);
    VirtIOBlock *s = VIRTIO_BLK(dev);
    VirtIOBlkConf *blk = &(s->blk);
#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
    Error *err = NULL;
#endif
    static int virtio_blk_id;

    if (!blk->conf.bs) {
        error_setg(errp, "drive property not set");
        return;
    }
    if (!bdrv_is_inserted(blk->conf.bs)) {
        error_setg(errp, "Device needs media, but drive is empty");
        return;
    }

    blkconf_serial(&blk->conf, &blk->serial);
    s->original_wce = bdrv_enable_write_cache(blk->conf.bs);
    if (blkconf_geometry(&blk->conf, NULL, 65535, 255, 255) < 0) {
        error_setg(errp, "Error setting geometry");
        return;
    }

    virtio_init(vdev, "virtio-blk", VIRTIO_ID_BLOCK,
                sizeof(struct virtio_blk_config));

    s->bs = blk->conf.bs;
    s->conf = &blk->conf;
    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);
    s->complete_request = virtio_blk_complete_request;
#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
    virtio_blk_data_plane_create(vdev, blk, &s->dataplane, &err);
    if (err != NULL) {
        error_propagate(errp, err);
        virtio_cleanup(vdev);
        return;
    }
    s->migration_state_notifier.notify = virtio_blk_migration_state_changed;
    add_migration_state_change_notifier(&s->migration_state_notifier);
#endif

    s->change = qemu_add_vm_change_state_handler(virtio_blk_dma_restart_cb, s);
    register_savevm(dev, "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_guest_block_size(s->bs, s->conf->logical_block_size);

    bdrv_iostatus_enable(s->bs);

    add_boot_device_path(s->conf->bootindex, dev, "/disk@0,0");
}
예제 #2
0
파일: virtio-blk.c 프로젝트: wdc-tools/qemu
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_common_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;
}
예제 #3
0
파일: virtio-blk.c 프로젝트: 0bliv10n/s2e
VirtIODevice *virtio_blk_init(DeviceState *dev, BlockConf *conf,
                              char **serial)
{
    VirtIOBlock *s;
    int cylinders, heads, secs;
    static int virtio_blk_id;
    DriveInfo *dinfo;

    if (!conf->bs) {
        error_report("drive property not set");
        return NULL;
    }
    if (!bdrv_is_inserted(conf->bs)) {
        error_report("Device needs media, but drive is empty");
        return NULL;
    }

    if (!*serial) {
        /* try to fall back to value set with legacy -drive serial=... */
        dinfo = drive_get_by_blockdev(conf->bs);
        if (*dinfo->serial) {
            *serial = strdup(dinfo->serial);
        }
    }

    s = (VirtIOBlock *)virtio_common_init("virtio-blk", VIRTIO_ID_BLOCK,
                                          sizeof(struct virtio_blk_config),
                                          sizeof(VirtIOBlock));

    s->vdev.get_config = virtio_blk_update_config;
    s->vdev.get_features = virtio_blk_get_features;
    s->vdev.reset = virtio_blk_reset;
    s->bs = conf->bs;
    s->conf = conf;
    s->serial = *serial;
    s->rq = NULL;
    s->sector_mask = (s->conf->logical_block_size / BDRV_SECTOR_SIZE) - 1;
    bdrv_guess_geometry(s->bs, &cylinders, &heads, &secs);

    s->vq = virtio_add_queue(&s->vdev, 128, virtio_blk_handle_output);

    qemu_add_vm_change_state_handler(virtio_blk_dma_restart_cb, s);
    s->qdev = dev;
    register_savevm(dev, "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, conf->logical_block_size);

    bdrv_iostatus_enable(s->bs);
    add_boot_device_path(conf->bootindex, dev, "/disk@0,0");

    return &s->vdev;
}
예제 #4
0
VirtIODevice *virtio_blk_init(DeviceState *dev, VirtIOBlkConf *blk)
{
    VirtIOBlock *s;
    static int virtio_blk_id;

    if (!blk->conf.bs) {
        error_report("drive property not set");
        return NULL;
    }
    if (!bdrv_is_inserted(blk->conf.bs)) {
        error_report("Device needs media, but drive is empty");
        return NULL;
    }

    blkconf_serial(&blk->conf, &blk->serial);
    if (blkconf_geometry(&blk->conf, NULL, 65535, 255, 255) < 0) {
        return NULL;
    }

    s = (VirtIOBlock *)virtio_common_init("virtio-blk", VIRTIO_ID_BLOCK,
                                          sizeof(struct virtio_blk_config),
                                          sizeof(VirtIOBlock));

    s->vdev.get_config = virtio_blk_update_config;
    s->vdev.set_config = virtio_blk_set_config;
    s->vdev.get_features = virtio_blk_get_features;
    s->vdev.set_status = virtio_blk_set_status;
    s->vdev.reset = virtio_blk_reset;
    s->bs = blk->conf.bs;
    s->conf = &blk->conf;
    s->blk = blk;
    s->rq = NULL;
    s->sector_mask = (s->conf->logical_block_size / BDRV_SECTOR_SIZE) - 1;

    s->vq = virtio_add_queue(&s->vdev, 128, virtio_blk_handle_output);

    qemu_add_vm_change_state_handler(virtio_blk_dma_restart_cb, s);
    s->qdev = dev;
    register_savevm(dev, "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, dev, "/disk@0,0");

    return &s->vdev;
}
예제 #5
0
VirtIODevice *virtio_blk_init(DeviceState *dev, VirtIOBlkConf *blk)
{
    VirtIOBlock *s;
    int cylinders, heads, secs;
    static int virtio_blk_id;
    DriveInfo *dinfo;

    if (!blk->conf.bs) {
        error_report("drive property not set");
        return NULL;
    }
    if (!bdrv_is_inserted(blk->conf.bs)) {
        error_report("Device needs media, but drive is empty");
        return NULL;
    }

    if (!blk->serial) {
        /* try to fall back to value set with legacy -drive serial=... */
        dinfo = drive_get_by_blockdev(blk->conf.bs);
        if (*dinfo->serial) {
            blk->serial = strdup(dinfo->serial);
        }
    }

    s = (VirtIOBlock *)virtio_common_init("virtio-blk", VIRTIO_ID_BLOCK,
                                          sizeof(struct virtio_blk_config),
                                          sizeof(VirtIOBlock));

    s->vdev.get_config = virtio_blk_update_config;
    s->vdev.get_features = virtio_blk_get_features;
#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
    s->vdev.set_status = virtio_blk_set_status;
#endif
    s->vdev.reset = virtio_blk_reset;
    s->bs = blk->conf.bs;
    s->conf = &blk->conf;
    s->blk = blk;
    s->rq = NULL;
    s->sector_mask = (s->conf->logical_block_size / 512) - 1;
    bdrv_guess_geometry(s->bs, &cylinders, &heads, &secs);
    bdrv_set_geometry_hint(s->bs, cylinders, heads, secs);

    s->vq = virtio_add_queue(&s->vdev, 128, virtio_blk_handle_output);
#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
    if (!virtio_blk_data_plane_create(&s->vdev, blk, &s->dataplane)) {
        virtio_cleanup(&s->vdev);
        return NULL;
    }
#endif

    s->change = qemu_add_vm_change_state_handler(virtio_blk_dma_restart_cb, s);
    s->qdev = dev;
    register_savevm(dev, "virtio-blk", virtio_blk_id++, 2,
                    virtio_blk_save, virtio_blk_load, s);
#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
    if (s->dataplane) {
        register_device_unmigratable(dev, "virtio-blk", s);
    }
#endif
    bdrv_set_dev_ops(s->bs, &virtio_block_ops, s);
    s->bs->buffer_alignment = s->conf->logical_block_size;

    bdrv_iostatus_enable(s->bs);
    add_boot_device_path(s->conf->bootindex, dev, "/disk@0,0");

    return &s->vdev;
}