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
|
/*
* Copyright (c) 2012-2018 General Dynamics
* Copyright (c) 2014 Open Kernel Labs, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#if !defined(__VSERVICES_CLIENT_SERIAL__)
#define __VSERVICES_CLIENT_SERIAL__
struct vs_service_device;
struct vs_client_serial_state;
struct vs_client_serial {
/*
* If set to false then the receive message handlers are run from
* workqueue context and are allowed to sleep. If set to true the
* message handlers are run from tasklet context and may not sleep.
*/
bool rx_atomic;
/*
* If this is set to true along with rx_atomic, the driver is allowed
* to send messages from softirq contexts other than the receive
* message handlers, after calling vs_service_state_lock_bh. Otherwise,
* messages may only be sent from the receive message handlers, or
* from task context after calling vs_service_state_lock. This must
* not be set to true if rx_atomic is set to false.
*/
bool tx_atomic;
/** session setup **/
struct vs_client_serial_state *(*alloc) (struct vs_service_device *
service);
void (*release) (struct vs_client_serial_state * _state);
struct vs_service_driver *driver;
/** Opened, reopened and closed functions **/
void (*opened) (struct vs_client_serial_state * _state);
void (*reopened) (struct vs_client_serial_state * _state);
void (*closed) (struct vs_client_serial_state * _state);
/** Send/receive state callbacks **/
int (*tx_ready) (struct vs_client_serial_state * _state);
struct {
int (*msg_msg) (struct vs_client_serial_state * _state,
struct vs_pbuf b, struct vs_mbuf * _mbuf);
} serial;
};
struct vs_client_serial_state {
vservice_serial_protocol_state_t state;
uint32_t packet_size;
struct {
uint32_t packet_size;
} serial;
struct vs_service_device *service;
bool released;
};
extern int vs_client_serial_reopen(struct vs_client_serial_state *_state);
extern int vs_client_serial_close(struct vs_client_serial_state *_state);
/** interface serial **/
/* message msg */
extern struct vs_mbuf *vs_client_serial_serial_alloc_msg(struct
vs_client_serial_state
*_state,
struct vs_pbuf *b,
gfp_t flags);
extern int vs_client_serial_serial_getbufs_msg(struct vs_client_serial_state
*_state, struct vs_pbuf *b,
struct vs_mbuf *_mbuf);
extern int vs_client_serial_serial_free_msg(struct vs_client_serial_state
*_state, struct vs_pbuf *b,
struct vs_mbuf *_mbuf);
extern int vs_client_serial_serial_send_msg(struct vs_client_serial_state
*_state, struct vs_pbuf b,
struct vs_mbuf *_mbuf);
/** Module registration **/
struct module;
extern int __vservice_serial_client_register(struct vs_client_serial *client,
const char *name,
struct module *owner);
static inline int vservice_serial_client_register(struct vs_client_serial
*client, const char *name)
{
#ifdef MODULE
extern struct module __this_module;
struct module *this_module = &__this_module;
#else
struct module *this_module = NULL;
#endif
return __vservice_serial_client_register(client, name, this_module);
}
extern int vservice_serial_client_unregister(struct vs_client_serial *client);
#endif /* ! __VSERVICES_CLIENT_SERIAL__ */
|
