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
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
|
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/list.h>
#include <linux/cdev.h>
#include <linux/err.h>
#include <linux/tapi/tapi.h>
void tapi_alloc_input(struct tapi_device *tdev, struct tapi_port *port);
int tapi_register_port_device(struct tapi_device* tdev, struct tapi_port *port);
int tapi_register_stream_device(struct tapi_device* tdev);
int tapi_register_control_device(struct tapi_device* tdev);
static struct class *tapi_class;
static int tapi_major;
#define TAPI_MAX_MINORS 255
static bool tapi_minors[TAPI_MAX_MINORS];
static int tapi_get_free_minor(void)
{
int i;
for (i = 0; i < TAPI_MAX_MINORS; ++i) {
if (!tapi_minors[i]) {
tapi_minors[i] = true;
return i;
}
}
return -1;
}
/*
int tapi_port_send_dtmf_events(struct tapi_device *tdev, unsigned int port, struct tapi_dtmf *, size_t num_events, unsigned int dealy)
{
}
EXPORT_SYMBOL_GPL(tapi_port_send_dtmf_events);
*/
void tapi_report_hook_event(struct tapi_device *tdev, struct tapi_port *port,
bool on)
{
struct tapi_event event;
event.type = TAPI_EVENT_TYPE_HOOK;
event.port = port->id;
event.hook.on = on;
tapi_report_event(tdev, &event);
}
EXPORT_SYMBOL_GPL(tapi_report_hook_event);
void tapi_report_dtmf_event(struct tapi_device *tdev, struct tapi_port *port,
unsigned char code)
{
struct tapi_event event;
event.type = TAPI_EVENT_TYPE_DTMF;
event.port = port->id;
event.dtmf.code = code;
tapi_report_event(tdev, &event);
}
EXPORT_SYMBOL_GPL(tapi_report_dtmf_event);
struct tapi_stream *tapi_stream_alloc(struct tapi_device *tdev)
{
struct tapi_stream *stream;
printk("tdev %p\n", tdev);
if (!tdev->ops || !tdev->ops->stream_alloc)
return ERR_PTR(-ENOSYS);
stream = tdev->ops->stream_alloc(tdev);
printk("stream %p\n", stream);
if (IS_ERR(stream))
return stream;
stream->id = atomic_inc_return(&tdev->stream_id) - 1;
stream->ep.id = stream->id;
/* mutex_lock(&tdev->lock);*/
list_add_tail(&stream->head, &tdev->streams);
/* mutex_unlock(&tdev->lock);*/
return stream;
}
EXPORT_SYMBOL_GPL(tapi_stream_alloc);
void tapi_stream_free(struct tapi_device *tdev, struct tapi_stream *stream)
{
mutex_lock(&tdev->lock);
list_del(&stream->head);
mutex_unlock(&tdev->lock);
tdev->ops->stream_free(tdev, stream);
}
EXPORT_SYMBOL_GPL(tapi_stream_free);
struct tapi_link *tapi_link_alloc(struct tapi_device *tdev,
struct tapi_endpoint *ep1, struct tapi_endpoint *ep2)
{
struct tapi_link *link;
if (!tdev->ops || !tdev->ops->link_alloc)
return ERR_PTR(-ENOSYS);
link = tdev->ops->link_alloc(tdev, ep1, ep2);
if (IS_ERR(link))
return link;
link->id = atomic_inc_return(&tdev->link_id) - 1;
/*
mutex_lock(&tdev->lock);
list_add_tail(&link->head, &tdev->links);
mutex_unlock(&tdev->lock);
*/
return link;
}
EXPORT_SYMBOL_GPL(tapi_link_alloc);
void tapi_link_free(struct tapi_device *tdev, struct tapi_link *link)
{
/*
mutex_lock(&tdev->lock);
list_del(&link->head);
mutex_unlock(&tdev->lock);
*/
tdev->ops->link_free(tdev, link);
}
EXPORT_SYMBOL_GPL(tapi_link_free);
int tapi_char_device_register(struct tapi_device *tdev,
struct tapi_char_device *tchrdev, const struct file_operations *fops)
{
int ret;
struct device *dev = &tchrdev->dev;
dev_t devt;
int minor = tapi_get_free_minor();
devt = MKDEV(tapi_major, minor);
dev->devt = devt;
dev->class = tapi_class;
dev->parent = &tdev->dev;
tchrdev->tdev = tdev;
cdev_init(&tchrdev->cdev, fops);
tchrdev->cdev.owner = THIS_MODULE;
ret = cdev_add(&tchrdev->cdev, devt, 1);
if (ret)
return ret;
ret = device_register(&tchrdev->dev);
if (ret)
goto err_cdev_del;
return 0;
err_cdev_del:
cdev_del(&tchrdev->cdev);
return ret;
}
int tapi_device_register(struct tapi_device *tdev, const char *name,
struct device *parent)
{
static atomic_t tapi_device_id = ATOMIC_INIT(0);
int ret, i;
tdev->dev.class = tapi_class;
tdev->dev.parent = parent;
dev_set_name(&tdev->dev, "%s", name);
ret = device_register(&tdev->dev);
if (ret)
return ret;
tdev->id = atomic_inc_return(&tapi_device_id) - 1;
mutex_init(&tdev->lock);
INIT_LIST_HEAD(&tdev->streams);
INIT_LIST_HEAD(&tdev->links);
atomic_set(&tdev->link_id, 0);
atomic_set(&tdev->stream_id, tdev->num_ports);
tapi_register_stream_device(tdev);
tapi_register_control_device(tdev);
for (i = 0; i < tdev->num_ports; ++i) {
tapi_port_alloc(tdev, i);
tapi_alloc_input(tdev, &tdev->ports[i]);
tapi_register_port_device(tdev, &tdev->ports[i]);
tdev->ports[i].id = i;
tdev->ports[i].ep.id = i;
}
return 0;
}
EXPORT_SYMBOL_GPL(tapi_device_register);
void tapi_device_unregister(struct tapi_device *tdev)
{
device_unregister(&tdev->dev);
}
EXPORT_SYMBOL_GPL(tapi_device_unregister);
static int __init tapi_class_init(void)
{
int ret;
dev_t dev;
tapi_class = class_create(THIS_MODULE, "tapi");
if (IS_ERR(tapi_class)) {
ret = PTR_ERR(tapi_class);
printk(KERN_ERR "tapi: Failed to create device class: %d\n", ret);
goto err;
}
ret = alloc_chrdev_region(&dev, 0, TAPI_MAX_MINORS, "tapi");
if (ret) {
printk(KERN_ERR "tapi: Failed to allocate chrdev region: %d\n", ret);
goto err_class_destory;
}
tapi_major = MAJOR(dev);
return 0;
err_class_destory:
class_destroy(tapi_class);
err:
return ret;
}
subsys_initcall(tapi_class_init);
static void __exit tapi_class_exit(void)
{
unregister_chrdev_region(MKDEV(tapi_major, 0), TAPI_MAX_MINORS);
class_destroy(tapi_class);
}
module_exit(tapi_class_exit);
MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
MODULE_DESCRIPTION("TAPI class");
MODULE_LICENSE("GPL");
|
