diff options
| author | john cooper <john.cooper@redhat.com> | 2009-06-22 14:26:51 -0400 |
|---|---|---|
| committer | Anthony Liguori <aliguori@us.ibm.com> | 2009-06-24 09:09:15 -0500 |
| commit | bf011293faaa7f87e4de83185931e7411b794128 (patch) | |
| tree | 4dca80354e9db089a43ac87aa41e220d51c32ad0 /hw/virtio-blk.h | |
| parent | 024589f182232c6e4f566ca4b30bd477f20b4257 (diff) | |
Add serial number support for virtio_blk
[brought forward to current qemu-kvm.git]
This patch implements the missing qemu logic to
interpret a '-drive .. serial=XYZ ..' flag for
a virtio_blk device.
The serial number string is contained in a
skeletal IDENTIFY DEVICE data structure and
this structure is made available to the guest
virtio_blk driver via pci i/o region 0.
Signed-off-by: john cooper <john.cooper@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'hw/virtio-blk.h')
| -rw-r--r-- | hw/virtio-blk.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/hw/virtio-blk.h b/hw/virtio-blk.h index dff3e0c97..1be434270 100644 --- a/hw/virtio-blk.h +++ b/hw/virtio-blk.h @@ -30,6 +30,11 @@ #define VIRTIO_BLK_F_RO 5 /* Disk is read-only */ #define VIRTIO_BLK_F_BLK_SIZE 6 /* Block size of disk is available*/ #define VIRTIO_BLK_F_SCSI 7 /* Supports scsi command passthru */ +#define VIRTIO_BLK_F_IDENTIFY 8 /* ATA IDENTIFY supported */ + +#define VIRTIO_BLK_ID_LEN 256 /* length of identify u16 array */ +#define VIRTIO_BLK_ID_SN 10 /* start of char * serial# */ +#define VIRTIO_BLK_ID_SN_BYTES 20 /* length in bytes of serial# */ struct virtio_blk_config { @@ -39,6 +44,8 @@ struct virtio_blk_config uint16_t cylinders; uint8_t heads; uint8_t sectors; + uint32_t _blk_size; /* structure pad, currently unused */ + uint16_t identify[VIRTIO_BLK_ID_LEN]; } __attribute__((packed)); /* These two define direction. */ |