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Add virtio disk identification support

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Add virtio-blk device id (s/n) support via virtio request.

Signed-off-by: john cooper <john.cooper@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
john cooper 2010-03-25 01:33:33 -04:00 • committed by Rusty Russell
commit 4cb2ea28c5
2 changed files with 35 additions and 0 deletions
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5
include/linux/virtio_blk.h
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@ -17,6 +17,8 @@
#define VIRTIO_BLK_F_FLUSH 9 /* Cache flush command support */
#define VIRTIO_BLK_F_TOPOLOGY 10 /* Topology information is available */
#define VIRTIO_BLK_ID_BYTES 20 /* ID string length */
struct virtio_blk_config {
/* The capacity (in 512-byte sectors). */
__u64 capacity;
@ -67,6 +69,9 @@ struct virtio_blk_config {
/* Cache flush command */
#define VIRTIO_BLK_T_FLUSH 4
/* Get device ID command */
#define VIRTIO_BLK_T_GET_ID 8
/* Barrier before this op. */
#define VIRTIO_BLK_T_BARRIER 0x80000000