diff options
Diffstat (limited to 'include/linux/virtio_blk.h')
-rw-r--r-- | include/linux/virtio_blk.h | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/include/linux/virtio_blk.h b/include/linux/virtio_blk.h index 7bd2bce0cfd9..e54635666f2c 100644 --- a/include/linux/virtio_blk.h +++ b/include/linux/virtio_blk.h | |||
@@ -6,15 +6,19 @@ | |||
6 | #define VIRTIO_ID_BLOCK 2 | 6 | #define VIRTIO_ID_BLOCK 2 |
7 | 7 | ||
8 | /* Feature bits */ | 8 | /* Feature bits */ |
9 | #define VIRTIO_CONFIG_BLK_F 0x40 | 9 | #define VIRTIO_BLK_F_BARRIER 0 /* Does host support barriers? */ |
10 | #define VIRTIO_BLK_F_BARRIER 1 /* Does host support barriers? */ | 10 | #define VIRTIO_BLK_F_SIZE_MAX 1 /* Indicates maximum segment size */ |
11 | 11 | #define VIRTIO_BLK_F_SEG_MAX 2 /* Indicates maximum # of segments */ | |
12 | /* The capacity (in 512-byte sectors). */ | 12 | |
13 | #define VIRTIO_CONFIG_BLK_F_CAPACITY 0x41 | 13 | struct virtio_blk_config |
14 | /* The maximum segment size. */ | 14 | { |
15 | #define VIRTIO_CONFIG_BLK_F_SIZE_MAX 0x42 | 15 | /* The capacity (in 512-byte sectors). */ |
16 | /* The maximum number of segments. */ | 16 | __le64 capacity; |
17 | #define VIRTIO_CONFIG_BLK_F_SEG_MAX 0x43 | 17 | /* The maximum segment size (if VIRTIO_BLK_F_SIZE_MAX) */ |
18 | __le32 size_max; | ||
19 | /* The maximum number of segments (if VIRTIO_BLK_F_SEG_MAX) */ | ||
20 | __le32 seg_max; | ||
21 | } __attribute__((packed)); | ||
18 | 22 | ||
19 | /* These two define direction. */ | 23 | /* These two define direction. */ |
20 | #define VIRTIO_BLK_T_IN 0 | 24 | #define VIRTIO_BLK_T_IN 0 |