1
2
3#include <linux/kernel.h>
4#include <linux/init.h>
5
6#include <net/bluetooth/bluetooth.h>
7#include <net/bluetooth/hci_core.h>
8
9struct class *bt_class = NULL;
10EXPORT_SYMBOL_GPL(bt_class);
11
12static struct workqueue_struct *bt_workq;
13
14static inline char *link_typetostr(int type)
15{
16 switch (type) {
17 case ACL_LINK:
18 return "ACL";
19 case SCO_LINK:
20 return "SCO";
21 case ESCO_LINK:
22 return "eSCO";
23 default:
24 return "UNKNOWN";
25 }
26}
27
28static ssize_t show_link_type(struct device *dev, struct device_attribute *attr, char *buf)
29{
30 struct hci_conn *conn = dev_get_drvdata(dev);
31 return sprintf(buf, "%s\n", link_typetostr(conn->type));
32}
33
34static ssize_t show_link_address(struct device *dev, struct device_attribute *attr, char *buf)
35{
36 struct hci_conn *conn = dev_get_drvdata(dev);
37 bdaddr_t bdaddr;
38 baswap(&bdaddr, &conn->dst);
39 return sprintf(buf, "%s\n", batostr(&bdaddr));
40}
41
42static ssize_t show_link_features(struct device *dev, struct device_attribute *attr, char *buf)
43{
44 struct hci_conn *conn = dev_get_drvdata(dev);
45
46 return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
47 conn->features[0], conn->features[1],
48 conn->features[2], conn->features[3],
49 conn->features[4], conn->features[5],
50 conn->features[6], conn->features[7]);
51}
52
53#define LINK_ATTR(_name,_mode,_show,_store) \
54struct device_attribute link_attr_##_name = __ATTR(_name,_mode,_show,_store)
55
56static LINK_ATTR(type, S_IRUGO, show_link_type, NULL);
57static LINK_ATTR(address, S_IRUGO, show_link_address, NULL);
58static LINK_ATTR(features, S_IRUGO, show_link_features, NULL);
59
60static struct attribute *bt_link_attrs[] = {
61 &link_attr_type.attr,
62 &link_attr_address.attr,
63 &link_attr_features.attr,
64 NULL
65};
66
67static struct attribute_group bt_link_group = {
68 .attrs = bt_link_attrs,
69};
70
71static const struct attribute_group *bt_link_groups[] = {
72 &bt_link_group,
73 NULL
74};
75
76static void bt_link_release(struct device *dev)
77{
78 void *data = dev_get_drvdata(dev);
79 kfree(data);
80}
81
82static struct device_type bt_link = {
83 .name = "link",
84 .groups = bt_link_groups,
85 .release = bt_link_release,
86};
87
88static void add_conn(struct work_struct *work)
89{
90 struct hci_conn *conn = container_of(work, struct hci_conn, work_add);
91 struct hci_dev *hdev = conn->hdev;
92
93 dev_set_name(&conn->dev, "%s:%d", hdev->name, conn->handle);
94
95 dev_set_drvdata(&conn->dev, conn);
96
97 if (device_add(&conn->dev) < 0) {
98 BT_ERR("Failed to register connection device");
99 return;
100 }
101
102 hci_dev_hold(hdev);
103}
104
105
106
107
108
109
110static int __match_tty(struct device *dev, void *data)
111{
112 return !strncmp(dev_name(dev), "rfcomm", 6);
113}
114
115static void del_conn(struct work_struct *work)
116{
117 struct hci_conn *conn = container_of(work, struct hci_conn, work_del);
118 struct hci_dev *hdev = conn->hdev;
119
120 if (!device_is_registered(&conn->dev))
121 return;
122
123 while (1) {
124 struct device *dev;
125
126 dev = device_find_child(&conn->dev, NULL, __match_tty);
127 if (!dev)
128 break;
129 device_move(dev, NULL, DPM_ORDER_DEV_LAST);
130 put_device(dev);
131 }
132
133 device_del(&conn->dev);
134 put_device(&conn->dev);
135
136 hci_dev_put(hdev);
137}
138
139void hci_conn_init_sysfs(struct hci_conn *conn)
140{
141 struct hci_dev *hdev = conn->hdev;
142
143 BT_DBG("conn %p", conn);
144
145 conn->dev.type = &bt_link;
146 conn->dev.class = bt_class;
147 conn->dev.parent = &hdev->dev;
148
149 device_initialize(&conn->dev);
150
151 INIT_WORK(&conn->work_add, add_conn);
152 INIT_WORK(&conn->work_del, del_conn);
153}
154
155void hci_conn_add_sysfs(struct hci_conn *conn)
156{
157 BT_DBG("conn %p", conn);
158
159 queue_work(bt_workq, &conn->work_add);
160}
161
162void hci_conn_del_sysfs(struct hci_conn *conn)
163{
164 BT_DBG("conn %p", conn);
165
166 queue_work(bt_workq, &conn->work_del);
167}
168
169static inline char *host_typetostr(int type)
170{
171 switch (type) {
172 case HCI_VIRTUAL:
173 return "VIRTUAL";
174 case HCI_USB:
175 return "USB";
176 case HCI_PCCARD:
177 return "PCCARD";
178 case HCI_UART:
179 return "UART";
180 case HCI_RS232:
181 return "RS232";
182 case HCI_PCI:
183 return "PCI";
184 case HCI_SDIO:
185 return "SDIO";
186 default:
187 return "UNKNOWN";
188 }
189}
190
191static ssize_t show_type(struct device *dev, struct device_attribute *attr, char *buf)
192{
193 struct hci_dev *hdev = dev_get_drvdata(dev);
194 return sprintf(buf, "%s\n", host_typetostr(hdev->type));
195}
196
197static ssize_t show_name(struct device *dev, struct device_attribute *attr, char *buf)
198{
199 struct hci_dev *hdev = dev_get_drvdata(dev);
200 char name[249];
201 int i;
202
203 for (i = 0; i < 248; i++)
204 name[i] = hdev->dev_name[i];
205
206 name[248] = '\0';
207 return sprintf(buf, "%s\n", name);
208}
209
210static ssize_t show_class(struct device *dev, struct device_attribute *attr, char *buf)
211{
212 struct hci_dev *hdev = dev_get_drvdata(dev);
213 return sprintf(buf, "0x%.2x%.2x%.2x\n",
214 hdev->dev_class[2], hdev->dev_class[1], hdev->dev_class[0]);
215}
216
217static ssize_t show_address(struct device *dev, struct device_attribute *attr, char *buf)
218{
219 struct hci_dev *hdev = dev_get_drvdata(dev);
220 bdaddr_t bdaddr;
221 baswap(&bdaddr, &hdev->bdaddr);
222 return sprintf(buf, "%s\n", batostr(&bdaddr));
223}
224
225static ssize_t show_features(struct device *dev, struct device_attribute *attr, char *buf)
226{
227 struct hci_dev *hdev = dev_get_drvdata(dev);
228
229 return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
230 hdev->features[0], hdev->features[1],
231 hdev->features[2], hdev->features[3],
232 hdev->features[4], hdev->features[5],
233 hdev->features[6], hdev->features[7]);
234}
235
236static ssize_t show_manufacturer(struct device *dev, struct device_attribute *attr, char *buf)
237{
238 struct hci_dev *hdev = dev_get_drvdata(dev);
239 return sprintf(buf, "%d\n", hdev->manufacturer);
240}
241
242static ssize_t show_hci_version(struct device *dev, struct device_attribute *attr, char *buf)
243{
244 struct hci_dev *hdev = dev_get_drvdata(dev);
245 return sprintf(buf, "%d\n", hdev->hci_ver);
246}
247
248static ssize_t show_hci_revision(struct device *dev, struct device_attribute *attr, char *buf)
249{
250 struct hci_dev *hdev = dev_get_drvdata(dev);
251 return sprintf(buf, "%d\n", hdev->hci_rev);
252}
253
254static ssize_t show_inquiry_cache(struct device *dev, struct device_attribute *attr, char *buf)
255{
256 struct hci_dev *hdev = dev_get_drvdata(dev);
257 struct inquiry_cache *cache = &hdev->inq_cache;
258 struct inquiry_entry *e;
259 int n = 0;
260
261 hci_dev_lock_bh(hdev);
262
263 for (e = cache->list; e; e = e->next) {
264 struct inquiry_data *data = &e->data;
265 bdaddr_t bdaddr;
266 baswap(&bdaddr, &data->bdaddr);
267 n += sprintf(buf + n, "%s %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n",
268 batostr(&bdaddr),
269 data->pscan_rep_mode, data->pscan_period_mode,
270 data->pscan_mode, data->dev_class[2],
271 data->dev_class[1], data->dev_class[0],
272 __le16_to_cpu(data->clock_offset),
273 data->rssi, data->ssp_mode, e->timestamp);
274 }
275
276 hci_dev_unlock_bh(hdev);
277 return n;
278}
279
280static ssize_t show_idle_timeout(struct device *dev, struct device_attribute *attr, char *buf)
281{
282 struct hci_dev *hdev = dev_get_drvdata(dev);
283 return sprintf(buf, "%d\n", hdev->idle_timeout);
284}
285
286static ssize_t store_idle_timeout(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
287{
288 struct hci_dev *hdev = dev_get_drvdata(dev);
289 char *ptr;
290 __u32 val;
291
292 val = simple_strtoul(buf, &ptr, 10);
293 if (ptr == buf)
294 return -EINVAL;
295
296 if (val != 0 && (val < 500 || val > 3600000))
297 return -EINVAL;
298
299 hdev->idle_timeout = val;
300
301 return count;
302}
303
304static ssize_t show_sniff_max_interval(struct device *dev, struct device_attribute *attr, char *buf)
305{
306 struct hci_dev *hdev = dev_get_drvdata(dev);
307 return sprintf(buf, "%d\n", hdev->sniff_max_interval);
308}
309
310static ssize_t store_sniff_max_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
311{
312 struct hci_dev *hdev = dev_get_drvdata(dev);
313 char *ptr;
314 __u16 val;
315
316 val = simple_strtoul(buf, &ptr, 10);
317 if (ptr == buf)
318 return -EINVAL;
319
320 if (val < 0x0002 || val > 0xFFFE || val % 2)
321 return -EINVAL;
322
323 if (val < hdev->sniff_min_interval)
324 return -EINVAL;
325
326 hdev->sniff_max_interval = val;
327
328 return count;
329}
330
331static ssize_t show_sniff_min_interval(struct device *dev, struct device_attribute *attr, char *buf)
332{
333 struct hci_dev *hdev = dev_get_drvdata(dev);
334 return sprintf(buf, "%d\n", hdev->sniff_min_interval);
335}
336
337static ssize_t store_sniff_min_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
338{
339 struct hci_dev *hdev = dev_get_drvdata(dev);
340 char *ptr;
341 __u16 val;
342
343 val = simple_strtoul(buf, &ptr, 10);
344 if (ptr == buf)
345 return -EINVAL;
346
347 if (val < 0x0002 || val > 0xFFFE || val % 2)
348 return -EINVAL;
349
350 if (val > hdev->sniff_max_interval)
351 return -EINVAL;
352
353 hdev->sniff_min_interval = val;
354
355 return count;
356}
357
358static DEVICE_ATTR(type, S_IRUGO, show_type, NULL);
359static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
360static DEVICE_ATTR(class, S_IRUGO, show_class, NULL);
361static DEVICE_ATTR(address, S_IRUGO, show_address, NULL);
362static DEVICE_ATTR(features, S_IRUGO, show_features, NULL);
363static DEVICE_ATTR(manufacturer, S_IRUGO, show_manufacturer, NULL);
364static DEVICE_ATTR(hci_version, S_IRUGO, show_hci_version, NULL);
365static DEVICE_ATTR(hci_revision, S_IRUGO, show_hci_revision, NULL);
366static DEVICE_ATTR(inquiry_cache, S_IRUGO, show_inquiry_cache, NULL);
367
368static DEVICE_ATTR(idle_timeout, S_IRUGO | S_IWUSR,
369 show_idle_timeout, store_idle_timeout);
370static DEVICE_ATTR(sniff_max_interval, S_IRUGO | S_IWUSR,
371 show_sniff_max_interval, store_sniff_max_interval);
372static DEVICE_ATTR(sniff_min_interval, S_IRUGO | S_IWUSR,
373 show_sniff_min_interval, store_sniff_min_interval);
374
375static struct attribute *bt_host_attrs[] = {
376 &dev_attr_type.attr,
377 &dev_attr_name.attr,
378 &dev_attr_class.attr,
379 &dev_attr_address.attr,
380 &dev_attr_features.attr,
381 &dev_attr_manufacturer.attr,
382 &dev_attr_hci_version.attr,
383 &dev_attr_hci_revision.attr,
384 &dev_attr_inquiry_cache.attr,
385 &dev_attr_idle_timeout.attr,
386 &dev_attr_sniff_max_interval.attr,
387 &dev_attr_sniff_min_interval.attr,
388 NULL
389};
390
391static struct attribute_group bt_host_group = {
392 .attrs = bt_host_attrs,
393};
394
395static const struct attribute_group *bt_host_groups[] = {
396 &bt_host_group,
397 NULL
398};
399
400static void bt_host_release(struct device *dev)
401{
402 void *data = dev_get_drvdata(dev);
403 kfree(data);
404}
405
406static struct device_type bt_host = {
407 .name = "host",
408 .groups = bt_host_groups,
409 .release = bt_host_release,
410};
411
412int hci_register_sysfs(struct hci_dev *hdev)
413{
414 struct device *dev = &hdev->dev;
415 int err;
416
417 BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type);
418
419 dev->type = &bt_host;
420 dev->class = bt_class;
421 dev->parent = hdev->parent;
422
423 dev_set_name(dev, "%s", hdev->name);
424
425 dev_set_drvdata(dev, hdev);
426
427 err = device_register(dev);
428 if (err < 0)
429 return err;
430
431 return 0;
432}
433
434void hci_unregister_sysfs(struct hci_dev *hdev)
435{
436 BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type);
437
438 device_del(&hdev->dev);
439}
440
441int __init bt_sysfs_init(void)
442{
443 bt_workq = create_singlethread_workqueue("bluetooth");
444 if (!bt_workq)
445 return -ENOMEM;
446
447 bt_class = class_create(THIS_MODULE, "bluetooth");
448 if (IS_ERR(bt_class)) {
449 destroy_workqueue(bt_workq);
450 return PTR_ERR(bt_class);
451 }
452
453 return 0;
454}
455
456void bt_sysfs_cleanup(void)
457{
458 destroy_workqueue(bt_workq);
459
460 class_destroy(bt_class);
461}
462
