diff options
Diffstat (limited to 'include/linux/virtio_blk.h')
-rw-r--r-- | include/linux/virtio_blk.h | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/include/linux/virtio_blk.h b/include/linux/virtio_blk.h index bca0b10d7947..d4695a3356d0 100644 --- a/include/linux/virtio_blk.h +++ b/include/linux/virtio_blk.h | |||
@@ -9,6 +9,7 @@ | |||
9 | #define VIRTIO_BLK_F_BARRIER 0 /* Does host support barriers? */ | 9 | #define VIRTIO_BLK_F_BARRIER 0 /* Does host support barriers? */ |
10 | #define VIRTIO_BLK_F_SIZE_MAX 1 /* Indicates maximum segment size */ | 10 | #define VIRTIO_BLK_F_SIZE_MAX 1 /* Indicates maximum segment size */ |
11 | #define VIRTIO_BLK_F_SEG_MAX 2 /* Indicates maximum # of segments */ | 11 | #define VIRTIO_BLK_F_SEG_MAX 2 /* Indicates maximum # of segments */ |
12 | #define VIRTIO_BLK_F_GEOMETRY 4 /* Legacy geometry available */ | ||
12 | 13 | ||
13 | struct virtio_blk_config | 14 | struct virtio_blk_config |
14 | { | 15 | { |
@@ -18,6 +19,12 @@ struct virtio_blk_config | |||
18 | __le32 size_max; | 19 | __le32 size_max; |
19 | /* The maximum number of segments (if VIRTIO_BLK_F_SEG_MAX) */ | 20 | /* The maximum number of segments (if VIRTIO_BLK_F_SEG_MAX) */ |
20 | __le32 seg_max; | 21 | __le32 seg_max; |
22 | /* geometry the device (if VIRTIO_BLK_F_GEOMETRY) */ | ||
23 | struct virtio_blk_geometry { | ||
24 | __le16 cylinders; | ||
25 | __u8 heads; | ||
26 | __u8 sectors; | ||
27 | } geometry; | ||
21 | } __attribute__((packed)); | 28 | } __attribute__((packed)); |
22 | 29 | ||
23 | /* These two define direction. */ | 30 | /* These two define direction. */ |
@@ -41,13 +48,8 @@ struct virtio_blk_outhdr | |||
41 | __u64 sector; | 48 | __u64 sector; |
42 | }; | 49 | }; |
43 | 50 | ||
51 | /* And this is the final byte of the write scatter-gather list. */ | ||
44 | #define VIRTIO_BLK_S_OK 0 | 52 | #define VIRTIO_BLK_S_OK 0 |
45 | #define VIRTIO_BLK_S_IOERR 1 | 53 | #define VIRTIO_BLK_S_IOERR 1 |
46 | #define VIRTIO_BLK_S_UNSUPP 2 | 54 | #define VIRTIO_BLK_S_UNSUPP 2 |
47 | |||
48 | /* This is the first element of the write scatter-gather list */ | ||
49 | struct virtio_blk_inhdr | ||
50 | { | ||
51 | unsigned char status; | ||
52 | }; | ||
53 | #endif /* _LINUX_VIRTIO_BLK_H */ | 55 | #endif /* _LINUX_VIRTIO_BLK_H */ |