Root/
1 | /* Bluetooth HCI driver model support. */ |
2 | |
3 | #include <linux/kernel.h> |
4 | #include <linux/slab.h> |
5 | #include <linux/init.h> |
6 | #include <linux/debugfs.h> |
7 | #include <linux/seq_file.h> |
8 | |
9 | #include <net/bluetooth/bluetooth.h> |
10 | #include <net/bluetooth/hci_core.h> |
11 | |
12 | static struct class *bt_class; |
13 | |
14 | struct dentry *bt_debugfs = NULL; |
15 | EXPORT_SYMBOL_GPL(bt_debugfs); |
16 | |
17 | static inline char *link_typetostr(int type) |
18 | { |
19 | switch (type) { |
20 | case ACL_LINK: |
21 | return "ACL"; |
22 | case SCO_LINK: |
23 | return "SCO"; |
24 | case ESCO_LINK: |
25 | return "eSCO"; |
26 | default: |
27 | return "UNKNOWN"; |
28 | } |
29 | } |
30 | |
31 | static ssize_t show_link_type(struct device *dev, struct device_attribute *attr, char *buf) |
32 | { |
33 | struct hci_conn *conn = dev_get_drvdata(dev); |
34 | return sprintf(buf, "%s\n", link_typetostr(conn->type)); |
35 | } |
36 | |
37 | static ssize_t show_link_address(struct device *dev, struct device_attribute *attr, char *buf) |
38 | { |
39 | struct hci_conn *conn = dev_get_drvdata(dev); |
40 | bdaddr_t bdaddr; |
41 | baswap(&bdaddr, &conn->dst); |
42 | return sprintf(buf, "%s\n", batostr(&bdaddr)); |
43 | } |
44 | |
45 | static ssize_t show_link_features(struct device *dev, struct device_attribute *attr, char *buf) |
46 | { |
47 | struct hci_conn *conn = dev_get_drvdata(dev); |
48 | |
49 | return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", |
50 | conn->features[0], conn->features[1], |
51 | conn->features[2], conn->features[3], |
52 | conn->features[4], conn->features[5], |
53 | conn->features[6], conn->features[7]); |
54 | } |
55 | |
56 | #define LINK_ATTR(_name,_mode,_show,_store) \ |
57 | struct device_attribute link_attr_##_name = __ATTR(_name,_mode,_show,_store) |
58 | |
59 | static LINK_ATTR(type, S_IRUGO, show_link_type, NULL); |
60 | static LINK_ATTR(address, S_IRUGO, show_link_address, NULL); |
61 | static LINK_ATTR(features, S_IRUGO, show_link_features, NULL); |
62 | |
63 | static struct attribute *bt_link_attrs[] = { |
64 | &link_attr_type.attr, |
65 | &link_attr_address.attr, |
66 | &link_attr_features.attr, |
67 | NULL |
68 | }; |
69 | |
70 | static struct attribute_group bt_link_group = { |
71 | .attrs = bt_link_attrs, |
72 | }; |
73 | |
74 | static const struct attribute_group *bt_link_groups[] = { |
75 | &bt_link_group, |
76 | NULL |
77 | }; |
78 | |
79 | static void bt_link_release(struct device *dev) |
80 | { |
81 | void *data = dev_get_drvdata(dev); |
82 | kfree(data); |
83 | } |
84 | |
85 | static struct device_type bt_link = { |
86 | .name = "link", |
87 | .groups = bt_link_groups, |
88 | .release = bt_link_release, |
89 | }; |
90 | |
91 | static void add_conn(struct work_struct *work) |
92 | { |
93 | struct hci_conn *conn = container_of(work, struct hci_conn, work_add); |
94 | struct hci_dev *hdev = conn->hdev; |
95 | |
96 | dev_set_name(&conn->dev, "%s:%d", hdev->name, conn->handle); |
97 | |
98 | dev_set_drvdata(&conn->dev, conn); |
99 | |
100 | if (device_add(&conn->dev) < 0) { |
101 | BT_ERR("Failed to register connection device"); |
102 | return; |
103 | } |
104 | |
105 | hci_dev_hold(hdev); |
106 | } |
107 | |
108 | /* |
109 | * The rfcomm tty device will possibly retain even when conn |
110 | * is down, and sysfs doesn't support move zombie device, |
111 | * so we should move the device before conn device is destroyed. |
112 | */ |
113 | static int __match_tty(struct device *dev, void *data) |
114 | { |
115 | return !strncmp(dev_name(dev), "rfcomm", 6); |
116 | } |
117 | |
118 | static void del_conn(struct work_struct *work) |
119 | { |
120 | struct hci_conn *conn = container_of(work, struct hci_conn, work_del); |
121 | struct hci_dev *hdev = conn->hdev; |
122 | |
123 | if (!device_is_registered(&conn->dev)) |
124 | return; |
125 | |
126 | while (1) { |
127 | struct device *dev; |
128 | |
129 | dev = device_find_child(&conn->dev, NULL, __match_tty); |
130 | if (!dev) |
131 | break; |
132 | device_move(dev, NULL, DPM_ORDER_DEV_LAST); |
133 | put_device(dev); |
134 | } |
135 | |
136 | device_del(&conn->dev); |
137 | put_device(&conn->dev); |
138 | |
139 | hci_dev_put(hdev); |
140 | } |
141 | |
142 | void hci_conn_init_sysfs(struct hci_conn *conn) |
143 | { |
144 | struct hci_dev *hdev = conn->hdev; |
145 | |
146 | BT_DBG("conn %p", conn); |
147 | |
148 | conn->dev.type = &bt_link; |
149 | conn->dev.class = bt_class; |
150 | conn->dev.parent = &hdev->dev; |
151 | |
152 | device_initialize(&conn->dev); |
153 | |
154 | INIT_WORK(&conn->work_add, add_conn); |
155 | INIT_WORK(&conn->work_del, del_conn); |
156 | } |
157 | |
158 | void hci_conn_add_sysfs(struct hci_conn *conn) |
159 | { |
160 | BT_DBG("conn %p", conn); |
161 | |
162 | queue_work(conn->hdev->workqueue, &conn->work_add); |
163 | } |
164 | |
165 | void hci_conn_del_sysfs(struct hci_conn *conn) |
166 | { |
167 | BT_DBG("conn %p", conn); |
168 | |
169 | queue_work(conn->hdev->workqueue, &conn->work_del); |
170 | } |
171 | |
172 | static inline char *host_bustostr(int bus) |
173 | { |
174 | switch (bus) { |
175 | case HCI_VIRTUAL: |
176 | return "VIRTUAL"; |
177 | case HCI_USB: |
178 | return "USB"; |
179 | case HCI_PCCARD: |
180 | return "PCCARD"; |
181 | case HCI_UART: |
182 | return "UART"; |
183 | case HCI_RS232: |
184 | return "RS232"; |
185 | case HCI_PCI: |
186 | return "PCI"; |
187 | case HCI_SDIO: |
188 | return "SDIO"; |
189 | default: |
190 | return "UNKNOWN"; |
191 | } |
192 | } |
193 | |
194 | static inline char *host_typetostr(int type) |
195 | { |
196 | switch (type) { |
197 | case HCI_BREDR: |
198 | return "BR/EDR"; |
199 | case HCI_80211: |
200 | return "802.11"; |
201 | default: |
202 | return "UNKNOWN"; |
203 | } |
204 | } |
205 | |
206 | static ssize_t show_bus(struct device *dev, struct device_attribute *attr, char *buf) |
207 | { |
208 | struct hci_dev *hdev = dev_get_drvdata(dev); |
209 | return sprintf(buf, "%s\n", host_bustostr(hdev->bus)); |
210 | } |
211 | |
212 | static ssize_t show_type(struct device *dev, struct device_attribute *attr, char *buf) |
213 | { |
214 | struct hci_dev *hdev = dev_get_drvdata(dev); |
215 | return sprintf(buf, "%s\n", host_typetostr(hdev->dev_type)); |
216 | } |
217 | |
218 | static ssize_t show_name(struct device *dev, struct device_attribute *attr, char *buf) |
219 | { |
220 | struct hci_dev *hdev = dev_get_drvdata(dev); |
221 | char name[249]; |
222 | int i; |
223 | |
224 | for (i = 0; i < 248; i++) |
225 | name[i] = hdev->dev_name[i]; |
226 | |
227 | name[248] = '\0'; |
228 | return sprintf(buf, "%s\n", name); |
229 | } |
230 | |
231 | static ssize_t show_class(struct device *dev, struct device_attribute *attr, char *buf) |
232 | { |
233 | struct hci_dev *hdev = dev_get_drvdata(dev); |
234 | return sprintf(buf, "0x%.2x%.2x%.2x\n", |
235 | hdev->dev_class[2], hdev->dev_class[1], hdev->dev_class[0]); |
236 | } |
237 | |
238 | static ssize_t show_address(struct device *dev, struct device_attribute *attr, char *buf) |
239 | { |
240 | struct hci_dev *hdev = dev_get_drvdata(dev); |
241 | bdaddr_t bdaddr; |
242 | baswap(&bdaddr, &hdev->bdaddr); |
243 | return sprintf(buf, "%s\n", batostr(&bdaddr)); |
244 | } |
245 | |
246 | static ssize_t show_features(struct device *dev, struct device_attribute *attr, char *buf) |
247 | { |
248 | struct hci_dev *hdev = dev_get_drvdata(dev); |
249 | |
250 | return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", |
251 | hdev->features[0], hdev->features[1], |
252 | hdev->features[2], hdev->features[3], |
253 | hdev->features[4], hdev->features[5], |
254 | hdev->features[6], hdev->features[7]); |
255 | } |
256 | |
257 | static ssize_t show_manufacturer(struct device *dev, struct device_attribute *attr, char *buf) |
258 | { |
259 | struct hci_dev *hdev = dev_get_drvdata(dev); |
260 | return sprintf(buf, "%d\n", hdev->manufacturer); |
261 | } |
262 | |
263 | static ssize_t show_hci_version(struct device *dev, struct device_attribute *attr, char *buf) |
264 | { |
265 | struct hci_dev *hdev = dev_get_drvdata(dev); |
266 | return sprintf(buf, "%d\n", hdev->hci_ver); |
267 | } |
268 | |
269 | static ssize_t show_hci_revision(struct device *dev, struct device_attribute *attr, char *buf) |
270 | { |
271 | struct hci_dev *hdev = dev_get_drvdata(dev); |
272 | return sprintf(buf, "%d\n", hdev->hci_rev); |
273 | } |
274 | |
275 | static ssize_t show_idle_timeout(struct device *dev, struct device_attribute *attr, char *buf) |
276 | { |
277 | struct hci_dev *hdev = dev_get_drvdata(dev); |
278 | return sprintf(buf, "%d\n", hdev->idle_timeout); |
279 | } |
280 | |
281 | static ssize_t store_idle_timeout(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
282 | { |
283 | struct hci_dev *hdev = dev_get_drvdata(dev); |
284 | unsigned long val; |
285 | |
286 | if (strict_strtoul(buf, 0, &val) < 0) |
287 | return -EINVAL; |
288 | |
289 | if (val != 0 && (val < 500 || val > 3600000)) |
290 | return -EINVAL; |
291 | |
292 | hdev->idle_timeout = val; |
293 | |
294 | return count; |
295 | } |
296 | |
297 | static ssize_t show_sniff_max_interval(struct device *dev, struct device_attribute *attr, char *buf) |
298 | { |
299 | struct hci_dev *hdev = dev_get_drvdata(dev); |
300 | return sprintf(buf, "%d\n", hdev->sniff_max_interval); |
301 | } |
302 | |
303 | static ssize_t store_sniff_max_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
304 | { |
305 | struct hci_dev *hdev = dev_get_drvdata(dev); |
306 | unsigned long val; |
307 | |
308 | if (strict_strtoul(buf, 0, &val) < 0) |
309 | return -EINVAL; |
310 | |
311 | if (val < 0x0002 || val > 0xFFFE || val % 2) |
312 | return -EINVAL; |
313 | |
314 | if (val < hdev->sniff_min_interval) |
315 | return -EINVAL; |
316 | |
317 | hdev->sniff_max_interval = val; |
318 | |
319 | return count; |
320 | } |
321 | |
322 | static ssize_t show_sniff_min_interval(struct device *dev, struct device_attribute *attr, char *buf) |
323 | { |
324 | struct hci_dev *hdev = dev_get_drvdata(dev); |
325 | return sprintf(buf, "%d\n", hdev->sniff_min_interval); |
326 | } |
327 | |
328 | static ssize_t store_sniff_min_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
329 | { |
330 | struct hci_dev *hdev = dev_get_drvdata(dev); |
331 | unsigned long val; |
332 | |
333 | if (strict_strtoul(buf, 0, &val) < 0) |
334 | return -EINVAL; |
335 | |
336 | if (val < 0x0002 || val > 0xFFFE || val % 2) |
337 | return -EINVAL; |
338 | |
339 | if (val > hdev->sniff_max_interval) |
340 | return -EINVAL; |
341 | |
342 | hdev->sniff_min_interval = val; |
343 | |
344 | return count; |
345 | } |
346 | |
347 | static DEVICE_ATTR(bus, S_IRUGO, show_bus, NULL); |
348 | static DEVICE_ATTR(type, S_IRUGO, show_type, NULL); |
349 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); |
350 | static DEVICE_ATTR(class, S_IRUGO, show_class, NULL); |
351 | static DEVICE_ATTR(address, S_IRUGO, show_address, NULL); |
352 | static DEVICE_ATTR(features, S_IRUGO, show_features, NULL); |
353 | static DEVICE_ATTR(manufacturer, S_IRUGO, show_manufacturer, NULL); |
354 | static DEVICE_ATTR(hci_version, S_IRUGO, show_hci_version, NULL); |
355 | static DEVICE_ATTR(hci_revision, S_IRUGO, show_hci_revision, NULL); |
356 | |
357 | static DEVICE_ATTR(idle_timeout, S_IRUGO | S_IWUSR, |
358 | show_idle_timeout, store_idle_timeout); |
359 | static DEVICE_ATTR(sniff_max_interval, S_IRUGO | S_IWUSR, |
360 | show_sniff_max_interval, store_sniff_max_interval); |
361 | static DEVICE_ATTR(sniff_min_interval, S_IRUGO | S_IWUSR, |
362 | show_sniff_min_interval, store_sniff_min_interval); |
363 | |
364 | static struct attribute *bt_host_attrs[] = { |
365 | &dev_attr_bus.attr, |
366 | &dev_attr_type.attr, |
367 | &dev_attr_name.attr, |
368 | &dev_attr_class.attr, |
369 | &dev_attr_address.attr, |
370 | &dev_attr_features.attr, |
371 | &dev_attr_manufacturer.attr, |
372 | &dev_attr_hci_version.attr, |
373 | &dev_attr_hci_revision.attr, |
374 | &dev_attr_idle_timeout.attr, |
375 | &dev_attr_sniff_max_interval.attr, |
376 | &dev_attr_sniff_min_interval.attr, |
377 | NULL |
378 | }; |
379 | |
380 | static struct attribute_group bt_host_group = { |
381 | .attrs = bt_host_attrs, |
382 | }; |
383 | |
384 | static const struct attribute_group *bt_host_groups[] = { |
385 | &bt_host_group, |
386 | NULL |
387 | }; |
388 | |
389 | static void bt_host_release(struct device *dev) |
390 | { |
391 | void *data = dev_get_drvdata(dev); |
392 | kfree(data); |
393 | } |
394 | |
395 | static struct device_type bt_host = { |
396 | .name = "host", |
397 | .groups = bt_host_groups, |
398 | .release = bt_host_release, |
399 | }; |
400 | |
401 | static int inquiry_cache_show(struct seq_file *f, void *p) |
402 | { |
403 | struct hci_dev *hdev = f->private; |
404 | struct inquiry_cache *cache = &hdev->inq_cache; |
405 | struct inquiry_entry *e; |
406 | |
407 | hci_dev_lock_bh(hdev); |
408 | |
409 | for (e = cache->list; e; e = e->next) { |
410 | struct inquiry_data *data = &e->data; |
411 | bdaddr_t bdaddr; |
412 | baswap(&bdaddr, &data->bdaddr); |
413 | seq_printf(f, "%s %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n", |
414 | batostr(&bdaddr), |
415 | data->pscan_rep_mode, data->pscan_period_mode, |
416 | data->pscan_mode, data->dev_class[2], |
417 | data->dev_class[1], data->dev_class[0], |
418 | __le16_to_cpu(data->clock_offset), |
419 | data->rssi, data->ssp_mode, e->timestamp); |
420 | } |
421 | |
422 | hci_dev_unlock_bh(hdev); |
423 | |
424 | return 0; |
425 | } |
426 | |
427 | static int inquiry_cache_open(struct inode *inode, struct file *file) |
428 | { |
429 | return single_open(file, inquiry_cache_show, inode->i_private); |
430 | } |
431 | |
432 | static const struct file_operations inquiry_cache_fops = { |
433 | .open = inquiry_cache_open, |
434 | .read = seq_read, |
435 | .llseek = seq_lseek, |
436 | .release = single_release, |
437 | }; |
438 | |
439 | static int blacklist_show(struct seq_file *f, void *p) |
440 | { |
441 | struct hci_dev *hdev = f->private; |
442 | struct list_head *l; |
443 | |
444 | hci_dev_lock_bh(hdev); |
445 | |
446 | list_for_each(l, &hdev->blacklist) { |
447 | struct bdaddr_list *b; |
448 | bdaddr_t bdaddr; |
449 | |
450 | b = list_entry(l, struct bdaddr_list, list); |
451 | |
452 | baswap(&bdaddr, &b->bdaddr); |
453 | |
454 | seq_printf(f, "%s\n", batostr(&bdaddr)); |
455 | } |
456 | |
457 | hci_dev_unlock_bh(hdev); |
458 | |
459 | return 0; |
460 | } |
461 | |
462 | static int blacklist_open(struct inode *inode, struct file *file) |
463 | { |
464 | return single_open(file, blacklist_show, inode->i_private); |
465 | } |
466 | |
467 | static const struct file_operations blacklist_fops = { |
468 | .open = blacklist_open, |
469 | .read = seq_read, |
470 | .llseek = seq_lseek, |
471 | .release = single_release, |
472 | }; |
473 | int hci_register_sysfs(struct hci_dev *hdev) |
474 | { |
475 | struct device *dev = &hdev->dev; |
476 | int err; |
477 | |
478 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
479 | |
480 | dev->type = &bt_host; |
481 | dev->class = bt_class; |
482 | dev->parent = hdev->parent; |
483 | |
484 | dev_set_name(dev, "%s", hdev->name); |
485 | |
486 | dev_set_drvdata(dev, hdev); |
487 | |
488 | err = device_register(dev); |
489 | if (err < 0) |
490 | return err; |
491 | |
492 | if (!bt_debugfs) |
493 | return 0; |
494 | |
495 | hdev->debugfs = debugfs_create_dir(hdev->name, bt_debugfs); |
496 | if (!hdev->debugfs) |
497 | return 0; |
498 | |
499 | debugfs_create_file("inquiry_cache", 0444, hdev->debugfs, |
500 | hdev, &inquiry_cache_fops); |
501 | |
502 | debugfs_create_file("blacklist", 0444, hdev->debugfs, |
503 | hdev, &blacklist_fops); |
504 | |
505 | return 0; |
506 | } |
507 | |
508 | void hci_unregister_sysfs(struct hci_dev *hdev) |
509 | { |
510 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
511 | |
512 | debugfs_remove_recursive(hdev->debugfs); |
513 | |
514 | device_del(&hdev->dev); |
515 | } |
516 | |
517 | int __init bt_sysfs_init(void) |
518 | { |
519 | bt_debugfs = debugfs_create_dir("bluetooth", NULL); |
520 | |
521 | bt_class = class_create(THIS_MODULE, "bluetooth"); |
522 | if (IS_ERR(bt_class)) |
523 | return PTR_ERR(bt_class); |
524 | |
525 | return 0; |
526 | } |
527 | |
528 | void bt_sysfs_cleanup(void) |
529 | { |
530 | class_destroy(bt_class); |
531 | |
532 | debugfs_remove_recursive(bt_debugfs); |
533 | } |
534 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9