[SeaBIOS] [PATCH 3/9] virtio-scsi: enumerate luns with REPORT LUNS

[Ed Swierk]

On Wed, Mar 1, 2017 at 2:45 AM, Roman Kagan <rkagan at virtuozzo.com> wrote:
>  virtio_scsi_scan_target(struct pci_device *pci, struct vp_device *vp,
>                          struct vring_virtqueue *vq, u16 target)
>  {
> -    /* TODO: send REPORT LUNS.  For now, only LUN 0 is recognized.  */
> -    int ret = virtio_scsi_add_lun(pci, vp, vq, target, 0);
> -    return ret < 0 ? 0 : 1;
> +
> +    struct virtio_lun_s vlun0;
> +
> +    virtio_scsi_init_lun(&vlun0, pci, vp, vq, target, 0);
> +
> +    int ret = scsi_rep_luns_scan(&vlun0.drive, virtio_scsi_add_lun);
> +    return ret < 0 ? 0 : ret;
>  }

Yes, please! Just about 6 hours before you posted this, I noticed that
when libvirt assigns addresses to virtio-scsi drives, it increments
the LUN. My workaround--keeping LUN 0 and incrementing the target
instead--can go away once this change is in SeaBIOS.

--Ed