diff options
| author | Christoph Hellwig <hch@lst.de> | 2010-02-10 23:37:25 +0100 |
|---|---|---|
| committer | Anthony Liguori <aliguori@us.ibm.com> | 2010-02-10 16:53:54 -0600 |
| commit | 9752c371a2f82b4fcde248dc35597f4066cd756c (patch) | |
| tree | 63f6788ec34f5be9cb52904e9621c87f6f04ff79 /hw/virtio-blk.h | |
| parent | 428c149b0be790b440e1cbee185b152cdb22feec (diff) | |
virtio-blk: add topology support
Export all topology information in the block config structure,
guarded by a new VIRTIO_BLK_F_TOPOLOGY feature flag.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'hw/virtio-blk.h')
| -rw-r--r-- | hw/virtio-blk.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/hw/virtio-blk.h b/hw/virtio-blk.h index 5c281adca5..f675375399 100644 --- a/hw/virtio-blk.h +++ b/hw/virtio-blk.h @@ -32,6 +32,7 @@ #define VIRTIO_BLK_F_SCSI 7 /* Supports scsi command passthru */ /* #define VIRTIO_BLK_F_IDENTIFY 8 ATA IDENTIFY supported, DEPRECATED */ #define VIRTIO_BLK_F_WCACHE 9 /* write cache enabled */ +#define VIRTIO_BLK_F_TOPOLOGY 10 /* Topology information is available */ struct virtio_blk_config { @@ -42,6 +43,10 @@ struct virtio_blk_config uint8_t heads; uint8_t sectors; uint32_t _blk_size; /* structure pad, currently unused */ + uint8_t physical_block_exp; + uint8_t alignment_offset; + uint16_t min_io_size; + uint32_t opt_io_size; } __attribute__((packed)); /* These two define direction. */ |