blob: 045aa780874de857c5e2e14e8e48c1044dace4a3 (
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
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-9-16 GuEe-GUI the first version
* 2021-11-11 GuEe-GUI using virtio common interface
* 2023-02-25 GuEe-GUI using virtio dm
*/
#ifndef __VIRTIO_BLK_H__
#define __VIRTIO_BLK_H__
#include <drivers/core/dm.h>
#define VIRTIO_BLK_F_SIZE_MAX 1 /* Indicates maximum segment size */
#define VIRTIO_BLK_F_SEG_MAX 2 /* Indicates maximum # of segments */
#define VIRTIO_BLK_F_GEOMETRY 4 /* Legacy geometry available */
#define VIRTIO_BLK_F_RO 5 /* Disk is read-only */
#define VIRTIO_BLK_F_BLK_SIZE 6 /* Block size of disk is available*/
#define VIRTIO_BLK_F_SCSI 7 /* Supports scsi command passthru */
#define VIRTIO_BLK_F_FLUSH 9 /* Flush command supported */
#define VIRTIO_BLK_F_TOPOLOGY 10 /* Topology information is available */
#define VIRTIO_BLK_F_CONFIG_WCE 11 /* Writeback mode available in config */
#define VIRTIO_BLK_F_MQ 12 /* Support more than one vq */
#define VIRTIO_BLK_F_DISCARD 13 /* DISCARD is supported */
#define VIRTIO_BLK_F_WRITE_ZEROES 14 /* WRITE ZEROES is supported */
#define VIRTIO_BLK_F_SECURE_ERASE 16 /* Secure Erase is supported */
#define VIRTIO_BLK_T_IN 0 /* Read the blk */
#define VIRTIO_BLK_T_OUT 1 /* Write the blk */
#define VIRTIO_BLK_T_SCSI_CMD 2
#define VIRTIO_BLK_T_SCSI_CMD_OUT 3
#define VIRTIO_BLK_T_FLUSH 4
#define VIRTIO_BLK_T_FLUSH_OUT 5
#define VIRTIO_BLK_T_GET_ID 8 /* Get device ID command */
#define VIRTIO_BLK_T_DISCARD 11 /* Discard command */
#define VIRTIO_BLK_T_WRITE_ZEROES 13 /* Write zeroes command */
#define VIRTIO_BLK_T_SECURE_ERASE 14 /* Secure erase command */
#define VIRTIO_BLK_T_ZONE_APPEND 15 /* Zone append command */
#define VIRTIO_BLK_T_ZONE_REPORT 16 /* Report zones command */
#define VIRTIO_BLK_T_ZONE_OPEN 18 /* Open zone command */
#define VIRTIO_BLK_T_ZONE_CLOSE 20 /* Close zone command */
#define VIRTIO_BLK_T_ZONE_FINISH 22 /* Finish zone command */
#define VIRTIO_BLK_T_ZONE_RESET 24 /* Reset zone command */
#define VIRTIO_BLK_T_ZONE_RESET_ALL 26 /* Reset All zones command */
struct virtio_blk_req
{
rt_le32_t type;
rt_le32_t ioprio;
rt_le64_t sector;
#define VIRTIO_BLK_S_OK 0
#define VIRTIO_BLK_S_IOERR 1
#define VIRTIO_BLK_S_UNSUPP 2
#define VIRTIO_BLK_S_ZONE_INVALID_CMD 3
#define VIRTIO_BLK_S_ZONE_UNALIGNED_WP 4
#define VIRTIO_BLK_S_ZONE_OPEN_RESOURCE 5
#define VIRTIO_BLK_S_ZONE_ACTIVE_RESOURCE 6
/*
* next:
* rt_uint8_t data[];
* rt_uint8_t status;
*/
};
struct virtio_blk_discard_write_zeroes
{
rt_le64_t sector;
rt_le32_t num_sectors;
/*
* unmap:1
* reserved:31
*/
rt_le32_t flags;
};
rt_packed(struct virtio_blk_config
{
/* The capacity (in 512-byte sectors). */
rt_le64_t capacity;
/* The maximum segment size (if VIRTIO_BLK_F_SIZE_MAX) */
rt_le32_t size_max;
/* The maximum number of segments (if VIRTIO_BLK_F_SEG_MAX) */
rt_le32_t seg_max;
/* Geometry of the device (if VIRTIO_BLK_F_GEOMETRY) */
struct virtio_blk_geometry
{
rt_le16_t cylinders;
rt_uint8_t heads;
rt_uint8_t sectors;
} geometry;
/* Block size of device (if VIRTIO_BLK_F_BLK_SIZE) */
rt_le32_t blk_size;
struct virtio_blk_topology
{
/* # Of logical blocks per physical block (log2) */
rt_uint8_t physical_block_exp;
/* Offset of first aligned logical block */
rt_uint8_t alignment_offset;
/* Suggested minimum I/O size in blocks */
rt_le16_t min_io_size;
/* Optimal (suggested maximum) I/O size in blocks */
rt_le32_t opt_io_size;
} topology;
rt_uint8_t writeback;
rt_uint8_t unused0;
rt_uint16_t num_queues;
rt_le32_t max_discard_sectors;
rt_le32_t max_discard_seg;
rt_le32_t discard_sector_alignment;
rt_le32_t max_write_zeroes_sectors;
rt_le32_t max_write_zeroes_seg;
rt_uint8_t write_zeroes_may_unmap;
rt_uint8_t unused1[3];
rt_le32_t max_secure_erase_sectors;
rt_le32_t max_secure_erase_seg;
rt_le32_t secure_erase_sector_alignment;
});
#endif /* __VIRTIO_BLK_H__ */
|
