diff options
Diffstat (limited to 'include/linux/virtio_blk.h')
| -rw-r--r-- | include/linux/virtio_blk.h | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/include/linux/virtio_blk.h b/include/linux/virtio_blk.h index 7bd2bce0cfd9..bca0b10d7947 100644 --- a/include/linux/virtio_blk.h +++ b/include/linux/virtio_blk.h @@ -6,15 +6,19 @@ #define VIRTIO_ID_BLOCK 2 /* Feature bits */ -#define VIRTIO_CONFIG_BLK_F 0x40 -#define VIRTIO_BLK_F_BARRIER 1 /* Does host support barriers? */ +#define VIRTIO_BLK_F_BARRIER 0 /* Does host support barriers? */ +#define VIRTIO_BLK_F_SIZE_MAX 1 /* Indicates maximum segment size */ +#define VIRTIO_BLK_F_SEG_MAX 2 /* Indicates maximum # of segments */ -/* The capacity (in 512-byte sectors). */ -#define VIRTIO_CONFIG_BLK_F_CAPACITY 0x41 -/* The maximum segment size. */ -#define VIRTIO_CONFIG_BLK_F_SIZE_MAX 0x42 -/* The maximum number of segments. */ -#define VIRTIO_CONFIG_BLK_F_SEG_MAX 0x43 +struct virtio_blk_config +{ + /* The capacity (in 512-byte sectors). */ + __le64 capacity; + /* The maximum segment size (if VIRTIO_BLK_F_SIZE_MAX) */ + __le32 size_max; + /* The maximum number of segments (if VIRTIO_BLK_F_SEG_MAX) */ + __le32 seg_max; +} __attribute__((packed)); /* These two define direction. */ #define VIRTIO_BLK_T_IN 0 @@ -35,8 +39,6 @@ struct virtio_blk_outhdr __u32 ioprio; /* Sector (ie. 512 byte offset) */ __u64 sector; - /* Where to put reply. */ - __u64 id; }; #define VIRTIO_BLK_S_OK 0 |