blob: f2f0381a52eff6e38ae24776490169e46b72e754 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
/****************************************************************************
****************************************************************************
***
*** This header was automatically generated from a Linux kernel header
*** of the same name, to make information necessary for userspace to
*** call into the kernel available to libc. It contains only constants,
*** structures, and macros generated from the original header, and thus,
*** contains no copyrightable information.
***
*** To edit the content of this header, modify the corresponding
*** source file (e.g. under external/kernel-headers/original/) then
*** run bionic/libc/kernel/tools/update_all.py
***
*** Any manual change here will be lost the next time this script will
*** be run. You've been warned!
***
****************************************************************************
****************************************************************************/
#ifndef _LINUX_VIRTIO_BLK_H
#define _LINUX_VIRTIO_BLK_H
#include <linux/types.h>
#include <linux/virtio_ids.h>
#include <linux/virtio_config.h>
#include <linux/virtio_types.h>
#define VIRTIO_BLK_F_SIZE_MAX 1
#define VIRTIO_BLK_F_SEG_MAX 2
#define VIRTIO_BLK_F_GEOMETRY 4
#define VIRTIO_BLK_F_RO 5
#define VIRTIO_BLK_F_BLK_SIZE 6
#define VIRTIO_BLK_F_TOPOLOGY 10
#define VIRTIO_BLK_F_MQ 12
#define VIRTIO_BLK_F_DISCARD 13
#define VIRTIO_BLK_F_WRITE_ZEROES 14
#ifndef VIRTIO_BLK_NO_LEGACY
#define VIRTIO_BLK_F_BARRIER 0
#define VIRTIO_BLK_F_SCSI 7
#define VIRTIO_BLK_F_FLUSH 9
#define VIRTIO_BLK_F_CONFIG_WCE 11
#define VIRTIO_BLK_F_WCE VIRTIO_BLK_F_FLUSH
#endif
#define VIRTIO_BLK_ID_BYTES 20
struct virtio_blk_config {
__virtio64 capacity;
__virtio32 size_max;
__virtio32 seg_max;
struct virtio_blk_geometry {
__virtio16 cylinders;
__u8 heads;
__u8 sectors;
} geometry;
__virtio32 blk_size;
__u8 physical_block_exp;
__u8 alignment_offset;
__virtio16 min_io_size;
__virtio32 opt_io_size;
__u8 wce;
__u8 unused;
__virtio16 num_queues;
__virtio32 max_discard_sectors;
__virtio32 max_discard_seg;
__virtio32 discard_sector_alignment;
__virtio32 max_write_zeroes_sectors;
__virtio32 max_write_zeroes_seg;
__u8 write_zeroes_may_unmap;
__u8 unused1[3];
} __attribute__((packed));
#define VIRTIO_BLK_T_IN 0
#define VIRTIO_BLK_T_OUT 1
#ifndef VIRTIO_BLK_NO_LEGACY
#define VIRTIO_BLK_T_SCSI_CMD 2
#endif
#define VIRTIO_BLK_T_FLUSH 4
#define VIRTIO_BLK_T_GET_ID 8
#define VIRTIO_BLK_T_DISCARD 11
#define VIRTIO_BLK_T_WRITE_ZEROES 13
#ifndef VIRTIO_BLK_NO_LEGACY
#define VIRTIO_BLK_T_BARRIER 0x80000000
#endif
struct virtio_blk_outhdr {
__virtio32 type;
__virtio32 ioprio;
__virtio64 sector;
};
#define VIRTIO_BLK_WRITE_ZEROES_FLAG_UNMAP 0x00000001
struct virtio_blk_discard_write_zeroes {
__le64 sector;
__le32 num_sectors;
__le32 flags;
};
#ifndef VIRTIO_BLK_NO_LEGACY
struct virtio_scsi_inhdr {
__virtio32 errors;
__virtio32 data_len;
__virtio32 sense_len;
__virtio32 residual;
};
#endif
#define VIRTIO_BLK_S_OK 0
#define VIRTIO_BLK_S_IOERR 1
#define VIRTIO_BLK_S_UNSUPP 2
#endif
|
