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
|
/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-11-11 GuEe-GUI the first version
*/
#ifndef __VIRTIO_CONSOLE_H__
#define __VIRTIO_CONSOLE_H__
#include <rtdef.h>
#include <virtio.h>
#ifndef RT_USING_VIRTIO_CONSOLE_PORT_MAX_NR
#define RT_USING_VIRTIO_CONSOLE_PORT_MAX_NR 4
#endif
#define VIRTIO_CONSOLE_QUEUE_DATA_RX 0
#define VIRTIO_CONSOLE_QUEUE_DATA_TX 1
#define VIRTIO_CONSOLE_QUEUE_CTRL_RX 2
#define VIRTIO_CONSOLE_QUEUE_CTRL_TX 3
#define VIRTIO_CONSOLE_QUEUE_SIZE 64
/* Every port has data rx & tx, and port0 has ctrl rx & tx in multiport */
#define VIRTIO_CONSOLE_PORT_QUEUE_INDEX(id, queue) ((id) * 2 + (!!(id)) * 2 + (queue))
#define VIRTIO_CONSOLE_PORT_BAD_ID (~(rt_uint32_t)0)
#define VIRTIO_CONSOLE_F_SIZE 0 /* Does host provide console size? */
#define VIRTIO_CONSOLE_F_MULTIPORT 1 /* Does host provide multiple ports? */
#define VIRTIO_CONSOLE_F_EMERG_WRITE 2 /* Does host support emergency write? */
struct virtio_console_config
{
rt_uint16_t cols;
rt_uint16_t rows;
rt_uint32_t max_nr_ports;
rt_uint32_t emerg_wr;
} __attribute__((packed));
struct virtio_console_control
{
rt_uint32_t id; /* Port number */
rt_uint16_t event; /* The kind of control event */
rt_uint16_t value; /* Extra information for the event */
};
enum virtio_console_control_event
{
VIRTIO_CONSOLE_DEVICE_READY = 0,
VIRTIO_CONSOLE_PORT_ADD,
VIRTIO_CONSOLE_PORT_REMOVE,
VIRTIO_CONSOLE_PORT_READY,
VIRTIO_CONSOLE_CONSOLE_PORT,
VIRTIO_CONSOLE_RESIZE,
VIRTIO_CONSOLE_PORT_OPEN,
VIRTIO_CONSOLE_PORT_NAME,
};
struct virtio_console_resize
{
rt_uint16_t cols;
rt_uint16_t rows;
};
struct virtio_console_device
{
struct rt_device parent;
struct virtio_device virtio_dev;
rt_uint32_t console_id;
rt_size_t port_nr;
rt_size_t max_port_nr;
rt_list_t port_head;
struct virtio_console_config *config;
struct
{
rt_ubase_t tx_ctrl_paddr;
struct virtio_console_control rx_ctrl, tx_ctrl;
} info[VIRTIO_CONSOLE_QUEUE_SIZE];
};
rt_err_t rt_virtio_console_init(rt_ubase_t *mmio_base, rt_uint32_t irq);
enum
{
VIRTIO_DEVICE_CTRL_CONSOLE_PORT_CREATE = 0x20,
VIRTIO_DEVICE_CTRL_CONSOLE_PORT_DESTROY,
};
#endif /* __VIRTIO_CONSOLE_H__ */
|
