1/****************************************************************************
2 ****************************************************************************
3 ***
4 ***   This header was automatically generated from a Linux kernel header
5 ***   of the same name, to make information necessary for userspace to
6 ***   call into the kernel available to libc.  It contains only constants,
7 ***   structures, and macros generated from the original header, and thus,
8 ***   contains no copyrightable information.
9 ***
10 ***   To edit the content of this header, modify the corresponding
11 ***   source file (e.g. under external/kernel-headers/original/) then
12 ***   run bionic/libc/kernel/tools/update_all.py
13 ***
14 ***   Any manual change here will be lost the next time this script will
15 ***   be run. You've been warned!
16 ***
17 ****************************************************************************
18 ****************************************************************************/
19#ifndef _LINUX_VIRTIO_BLK_H
20#define _LINUX_VIRTIO_BLK_H
21#include <linux/types.h>
22#include <linux/virtio_ids.h>
23#include <linux/virtio_config.h>
24#include <linux/virtio_types.h>
25#define VIRTIO_BLK_F_SIZE_MAX 1
26#define VIRTIO_BLK_F_SEG_MAX 2
27#define VIRTIO_BLK_F_GEOMETRY 4
28#define VIRTIO_BLK_F_RO 5
29#define VIRTIO_BLK_F_BLK_SIZE 6
30#define VIRTIO_BLK_F_TOPOLOGY 10
31#define VIRTIO_BLK_F_MQ 12
32#ifndef VIRTIO_BLK_NO_LEGACY
33#define VIRTIO_BLK_F_BARRIER 0
34#define VIRTIO_BLK_F_SCSI 7
35#define VIRTIO_BLK_F_FLUSH 9
36#define VIRTIO_BLK_F_CONFIG_WCE 11
37#define VIRTIO_BLK_F_WCE VIRTIO_BLK_F_FLUSH
38#endif
39#define VIRTIO_BLK_ID_BYTES 20
40struct virtio_blk_config {
41  __u64 capacity;
42  __u32 size_max;
43  __u32 seg_max;
44  struct virtio_blk_geometry {
45    __u16 cylinders;
46    __u8 heads;
47    __u8 sectors;
48  } geometry;
49  __u32 blk_size;
50  __u8 physical_block_exp;
51  __u8 alignment_offset;
52  __u16 min_io_size;
53  __u32 opt_io_size;
54  __u8 wce;
55  __u8 unused;
56  __u16 num_queues;
57} __attribute__((packed));
58#define VIRTIO_BLK_T_IN 0
59#define VIRTIO_BLK_T_OUT 1
60#ifndef VIRTIO_BLK_NO_LEGACY
61#define VIRTIO_BLK_T_SCSI_CMD 2
62#endif
63#define VIRTIO_BLK_T_FLUSH 4
64#define VIRTIO_BLK_T_GET_ID 8
65#ifndef VIRTIO_BLK_NO_LEGACY
66#define VIRTIO_BLK_T_BARRIER 0x80000000
67#endif
68struct virtio_blk_outhdr {
69  __virtio32 type;
70  __virtio32 ioprio;
71  __virtio64 sector;
72};
73#ifndef VIRTIO_BLK_NO_LEGACY
74struct virtio_scsi_inhdr {
75  __virtio32 errors;
76  __virtio32 data_len;
77  __virtio32 sense_len;
78  __virtio32 residual;
79};
80#endif
81#define VIRTIO_BLK_S_OK 0
82#define VIRTIO_BLK_S_IOERR 1
83#define VIRTIO_BLK_S_UNSUPP 2
84#endif
85