Bluetooth: Add SMP to User Passkey and Confirm
[linux-2.6.git] / net / bluetooth / hci_sysfs.c
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 #include <linux/module.h>
9
10 #include <net/bluetooth/bluetooth.h>
11 #include <net/bluetooth/hci_core.h>
12
13 static struct class *bt_class;
14
15 struct dentry *bt_debugfs;
16 EXPORT_SYMBOL_GPL(bt_debugfs);
17
18 static inline char *link_typetostr(int type)
19 {
20         switch (type) {
21         case ACL_LINK:
22                 return "ACL";
23         case SCO_LINK:
24                 return "SCO";
25         case ESCO_LINK:
26                 return "eSCO";
27         case LE_LINK:
28                 return "LE";
29         default:
30                 return "UNKNOWN";
31         }
32 }
33
34 static ssize_t show_link_type(struct device *dev, struct device_attribute *attr, char *buf)
35 {
36         struct hci_conn *conn = dev_get_drvdata(dev);
37         return sprintf(buf, "%s\n", link_typetostr(conn->type));
38 }
39
40 static ssize_t show_link_address(struct device *dev, struct device_attribute *attr, char *buf)
41 {
42         struct hci_conn *conn = dev_get_drvdata(dev);
43         return sprintf(buf, "%s\n", batostr(&conn->dst));
44 }
45
46 static ssize_t show_link_features(struct device *dev, struct device_attribute *attr, char *buf)
47 {
48         struct hci_conn *conn = dev_get_drvdata(dev);
49
50         return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
51                                 conn->features[0], conn->features[1],
52                                 conn->features[2], conn->features[3],
53                                 conn->features[4], conn->features[5],
54                                 conn->features[6], conn->features[7]);
55 }
56
57 #define LINK_ATTR(_name, _mode, _show, _store) \
58 struct device_attribute link_attr_##_name = __ATTR(_name, _mode, _show, _store)
59
60 static LINK_ATTR(type, S_IRUGO, show_link_type, NULL);
61 static LINK_ATTR(address, S_IRUGO, show_link_address, NULL);
62 static LINK_ATTR(features, S_IRUGO, show_link_features, NULL);
63
64 static struct attribute *bt_link_attrs[] = {
65         &link_attr_type.attr,
66         &link_attr_address.attr,
67         &link_attr_features.attr,
68         NULL
69 };
70
71 static struct attribute_group bt_link_group = {
72         .attrs = bt_link_attrs,
73 };
74
75 static const struct attribute_group *bt_link_groups[] = {
76         &bt_link_group,
77         NULL
78 };
79
80 static void bt_link_release(struct device *dev)
81 {
82         void *data = dev_get_drvdata(dev);
83         kfree(data);
84 }
85
86 static struct device_type bt_link = {
87         .name    = "link",
88         .groups  = bt_link_groups,
89         .release = bt_link_release,
90 };
91
92 /*
93  * The rfcomm tty device will possibly retain even when conn
94  * is down, and sysfs doesn't support move zombie device,
95  * so we should move the device before conn device is destroyed.
96  */
97 static int __match_tty(struct device *dev, void *data)
98 {
99         return !strncmp(dev_name(dev), "rfcomm", 6);
100 }
101
102 void hci_conn_init_sysfs(struct hci_conn *conn)
103 {
104         struct hci_dev *hdev = conn->hdev;
105
106         BT_DBG("conn %p", conn);
107
108         conn->dev.type = &bt_link;
109         conn->dev.class = bt_class;
110         conn->dev.parent = &hdev->dev;
111
112         device_initialize(&conn->dev);
113 }
114
115 void hci_conn_add_sysfs(struct hci_conn *conn)
116 {
117         struct hci_dev *hdev = conn->hdev;
118
119         BT_DBG("conn %p", conn);
120
121         dev_set_name(&conn->dev, "%s:%d", hdev->name, conn->handle);
122
123         dev_set_drvdata(&conn->dev, conn);
124
125         if (device_add(&conn->dev) < 0) {
126                 BT_ERR("Failed to register connection device");
127                 return;
128         }
129
130         hci_dev_hold(hdev);
131 }
132
133 void hci_conn_del_sysfs(struct hci_conn *conn)
134 {
135         struct hci_dev *hdev = conn->hdev;
136
137         if (!device_is_registered(&conn->dev))
138                 return;
139
140         while (1) {
141                 struct device *dev;
142
143                 dev = device_find_child(&conn->dev, NULL, __match_tty);
144                 if (!dev)
145                         break;
146                 device_move(dev, NULL, DPM_ORDER_DEV_LAST);
147                 put_device(dev);
148         }
149
150         device_del(&conn->dev);
151         put_device(&conn->dev);
152
153         hci_dev_put(hdev);
154 }
155
156 static inline char *host_bustostr(int bus)
157 {
158         switch (bus) {
159         case HCI_VIRTUAL:
160                 return "VIRTUAL";
161         case HCI_USB:
162                 return "USB";
163         case HCI_PCCARD:
164                 return "PCCARD";
165         case HCI_UART:
166                 return "UART";
167         case HCI_RS232:
168                 return "RS232";
169         case HCI_PCI:
170                 return "PCI";
171         case HCI_SDIO:
172                 return "SDIO";
173         default:
174                 return "UNKNOWN";
175         }
176 }
177
178 static inline char *host_typetostr(int type)
179 {
180         switch (type) {
181         case HCI_BREDR:
182                 return "BR/EDR";
183         case HCI_AMP:
184                 return "AMP";
185         default:
186                 return "UNKNOWN";
187         }
188 }
189
190 static ssize_t show_bus(struct device *dev, struct device_attribute *attr, char *buf)
191 {
192         struct hci_dev *hdev = dev_get_drvdata(dev);
193         return sprintf(buf, "%s\n", host_bustostr(hdev->bus));
194 }
195
196 static ssize_t show_type(struct device *dev, struct device_attribute *attr, char *buf)
197 {
198         struct hci_dev *hdev = dev_get_drvdata(dev);
199         return sprintf(buf, "%s\n", host_typetostr(hdev->dev_type));
200 }
201
202 static ssize_t show_name(struct device *dev, struct device_attribute *attr, char *buf)
203 {
204         struct hci_dev *hdev = dev_get_drvdata(dev);
205         char name[HCI_MAX_NAME_LENGTH + 1];
206         int i;
207
208         for (i = 0; i < HCI_MAX_NAME_LENGTH; i++)
209                 name[i] = hdev->dev_name[i];
210
211         name[HCI_MAX_NAME_LENGTH] = '\0';
212         return sprintf(buf, "%s\n", name);
213 }
214
215 static ssize_t show_class(struct device *dev, struct device_attribute *attr, char *buf)
216 {
217         struct hci_dev *hdev = dev_get_drvdata(dev);
218         return sprintf(buf, "0x%.2x%.2x%.2x\n",
219                         hdev->dev_class[2], hdev->dev_class[1], hdev->dev_class[0]);
220 }
221
222 static ssize_t show_address(struct device *dev, struct device_attribute *attr, char *buf)
223 {
224         struct hci_dev *hdev = dev_get_drvdata(dev);
225         return sprintf(buf, "%s\n", batostr(&hdev->bdaddr));
226 }
227
228 static ssize_t show_features(struct device *dev, struct device_attribute *attr, char *buf)
229 {
230         struct hci_dev *hdev = dev_get_drvdata(dev);
231
232         return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
233                                 hdev->features[0], hdev->features[1],
234                                 hdev->features[2], hdev->features[3],
235                                 hdev->features[4], hdev->features[5],
236                                 hdev->features[6], hdev->features[7]);
237 }
238
239 static ssize_t show_manufacturer(struct device *dev, struct device_attribute *attr, char *buf)
240 {
241         struct hci_dev *hdev = dev_get_drvdata(dev);
242         return sprintf(buf, "%d\n", hdev->manufacturer);
243 }
244
245 static ssize_t show_hci_version(struct device *dev, struct device_attribute *attr, char *buf)
246 {
247         struct hci_dev *hdev = dev_get_drvdata(dev);
248         return sprintf(buf, "%d\n", hdev->hci_ver);
249 }
250
251 static ssize_t show_hci_revision(struct device *dev, struct device_attribute *attr, char *buf)
252 {
253         struct hci_dev *hdev = dev_get_drvdata(dev);
254         return sprintf(buf, "%d\n", hdev->hci_rev);
255 }
256
257 static ssize_t show_idle_timeout(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->idle_timeout);
261 }
262
263 static ssize_t store_idle_timeout(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
264 {
265         struct hci_dev *hdev = dev_get_drvdata(dev);
266         unsigned int val;
267         int rv;
268
269         rv = kstrtouint(buf, 0, &val);
270         if (rv < 0)
271                 return rv;
272
273         if (val != 0 && (val < 500 || val > 3600000))
274                 return -EINVAL;
275
276         hdev->idle_timeout = val;
277
278         return count;
279 }
280
281 static ssize_t show_sniff_max_interval(struct device *dev, struct device_attribute *attr, char *buf)
282 {
283         struct hci_dev *hdev = dev_get_drvdata(dev);
284         return sprintf(buf, "%d\n", hdev->sniff_max_interval);
285 }
286
287 static ssize_t store_sniff_max_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
288 {
289         struct hci_dev *hdev = dev_get_drvdata(dev);
290         u16 val;
291         int rv;
292
293         rv = kstrtou16(buf, 0, &val);
294         if (rv < 0)
295                 return rv;
296
297         if (val == 0 || val % 2 || val < hdev->sniff_min_interval)
298                 return -EINVAL;
299
300         hdev->sniff_max_interval = val;
301
302         return count;
303 }
304
305 static ssize_t show_sniff_min_interval(struct device *dev, struct device_attribute *attr, char *buf)
306 {
307         struct hci_dev *hdev = dev_get_drvdata(dev);
308         return sprintf(buf, "%d\n", hdev->sniff_min_interval);
309 }
310
311 static ssize_t store_sniff_min_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
312 {
313         struct hci_dev *hdev = dev_get_drvdata(dev);
314         u16 val;
315         int rv;
316
317         rv = kstrtou16(buf, 0, &val);
318         if (rv < 0)
319                 return rv;
320
321         if (val == 0 || val % 2 || val > hdev->sniff_max_interval)
322                 return -EINVAL;
323
324         hdev->sniff_min_interval = val;
325
326         return count;
327 }
328
329 static DEVICE_ATTR(bus, S_IRUGO, show_bus, NULL);
330 static DEVICE_ATTR(type, S_IRUGO, show_type, NULL);
331 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
332 static DEVICE_ATTR(class, S_IRUGO, show_class, NULL);
333 static DEVICE_ATTR(address, S_IRUGO, show_address, NULL);
334 static DEVICE_ATTR(features, S_IRUGO, show_features, NULL);
335 static DEVICE_ATTR(manufacturer, S_IRUGO, show_manufacturer, NULL);
336 static DEVICE_ATTR(hci_version, S_IRUGO, show_hci_version, NULL);
337 static DEVICE_ATTR(hci_revision, S_IRUGO, show_hci_revision, NULL);
338
339 static DEVICE_ATTR(idle_timeout, S_IRUGO | S_IWUSR,
340                                 show_idle_timeout, store_idle_timeout);
341 static DEVICE_ATTR(sniff_max_interval, S_IRUGO | S_IWUSR,
342                                 show_sniff_max_interval, store_sniff_max_interval);
343 static DEVICE_ATTR(sniff_min_interval, S_IRUGO | S_IWUSR,
344                                 show_sniff_min_interval, store_sniff_min_interval);
345
346 static struct attribute *bt_host_attrs[] = {
347         &dev_attr_bus.attr,
348         &dev_attr_type.attr,
349         &dev_attr_name.attr,
350         &dev_attr_class.attr,
351         &dev_attr_address.attr,
352         &dev_attr_features.attr,
353         &dev_attr_manufacturer.attr,
354         &dev_attr_hci_version.attr,
355         &dev_attr_hci_revision.attr,
356         &dev_attr_idle_timeout.attr,
357         &dev_attr_sniff_max_interval.attr,
358         &dev_attr_sniff_min_interval.attr,
359         NULL
360 };
361
362 static struct attribute_group bt_host_group = {
363         .attrs = bt_host_attrs,
364 };
365
366 static const struct attribute_group *bt_host_groups[] = {
367         &bt_host_group,
368         NULL
369 };
370
371 static void bt_host_release(struct device *dev)
372 {
373         void *data = dev_get_drvdata(dev);
374         kfree(data);
375 }
376
377 static struct device_type bt_host = {
378         .name    = "host",
379         .groups  = bt_host_groups,
380         .release = bt_host_release,
381 };
382
383 static int inquiry_cache_show(struct seq_file *f, void *p)
384 {
385         struct hci_dev *hdev = f->private;
386         struct inquiry_cache *cache = &hdev->inq_cache;
387         struct inquiry_entry *e;
388
389         hci_dev_lock(hdev);
390
391         for (e = cache->list; e; e = e->next) {
392                 struct inquiry_data *data = &e->data;
393                 seq_printf(f, "%s %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n",
394                            batostr(&data->bdaddr),
395                            data->pscan_rep_mode, data->pscan_period_mode,
396                            data->pscan_mode, data->dev_class[2],
397                            data->dev_class[1], data->dev_class[0],
398                            __le16_to_cpu(data->clock_offset),
399                            data->rssi, data->ssp_mode, e->timestamp);
400         }
401
402         hci_dev_unlock(hdev);
403
404         return 0;
405 }
406
407 static int inquiry_cache_open(struct inode *inode, struct file *file)
408 {
409         return single_open(file, inquiry_cache_show, inode->i_private);
410 }
411
412 static const struct file_operations inquiry_cache_fops = {
413         .open           = inquiry_cache_open,
414         .read           = seq_read,
415         .llseek         = seq_lseek,
416         .release        = single_release,
417 };
418
419 static int blacklist_show(struct seq_file *f, void *p)
420 {
421         struct hci_dev *hdev = f->private;
422         struct bdaddr_list *b;
423
424         hci_dev_lock(hdev);
425
426         list_for_each_entry(b, &hdev->blacklist, list)
427                 seq_printf(f, "%s\n", batostr(&b->bdaddr));
428
429         hci_dev_unlock(hdev);
430
431         return 0;
432 }
433
434 static int blacklist_open(struct inode *inode, struct file *file)
435 {
436         return single_open(file, blacklist_show, inode->i_private);
437 }
438
439 static const struct file_operations blacklist_fops = {
440         .open           = blacklist_open,
441         .read           = seq_read,
442         .llseek         = seq_lseek,
443         .release        = single_release,
444 };
445
446 static void print_bt_uuid(struct seq_file *f, u8 *uuid)
447 {
448         u32 data0, data4;
449         u16 data1, data2, data3, data5;
450
451         memcpy(&data0, &uuid[0], 4);
452         memcpy(&data1, &uuid[4], 2);
453         memcpy(&data2, &uuid[6], 2);
454         memcpy(&data3, &uuid[8], 2);
455         memcpy(&data4, &uuid[10], 4);
456         memcpy(&data5, &uuid[14], 2);
457
458         seq_printf(f, "%.8x-%.4x-%.4x-%.4x-%.8x%.4x\n",
459                                 ntohl(data0), ntohs(data1), ntohs(data2),
460                                 ntohs(data3), ntohl(data4), ntohs(data5));
461 }
462
463 static int uuids_show(struct seq_file *f, void *p)
464 {
465         struct hci_dev *hdev = f->private;
466         struct bt_uuid *uuid;
467
468         hci_dev_lock(hdev);
469
470         list_for_each_entry(uuid, &hdev->uuids, list)
471                 print_bt_uuid(f, uuid->uuid);
472
473         hci_dev_unlock(hdev);
474
475         return 0;
476 }
477
478 static int uuids_open(struct inode *inode, struct file *file)
479 {
480         return single_open(file, uuids_show, inode->i_private);
481 }
482
483 static const struct file_operations uuids_fops = {
484         .open           = uuids_open,
485         .read           = seq_read,
486         .llseek         = seq_lseek,
487         .release        = single_release,
488 };
489
490 static int auto_accept_delay_set(void *data, u64 val)
491 {
492         struct hci_dev *hdev = data;
493
494         hci_dev_lock(hdev);
495
496         hdev->auto_accept_delay = val;
497
498         hci_dev_unlock(hdev);
499
500         return 0;
501 }
502
503 static int auto_accept_delay_get(void *data, u64 *val)
504 {
505         struct hci_dev *hdev = data;
506
507         hci_dev_lock(hdev);
508
509         *val = hdev->auto_accept_delay;
510
511         hci_dev_unlock(hdev);
512
513         return 0;
514 }
515
516 DEFINE_SIMPLE_ATTRIBUTE(auto_accept_delay_fops, auto_accept_delay_get,
517                                         auto_accept_delay_set, "%llu\n");
518
519 void hci_init_sysfs(struct hci_dev *hdev)
520 {
521         struct device *dev = &hdev->dev;
522
523         dev->type = &bt_host;
524         dev->class = bt_class;
525
526         dev_set_drvdata(dev, hdev);
527         device_initialize(dev);
528 }
529
530 int hci_add_sysfs(struct hci_dev *hdev)
531 {
532         struct device *dev = &hdev->dev;
533         int err;
534
535         BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus);
536
537         dev->parent = hdev->parent;
538         dev_set_name(dev, "%s", hdev->name);
539
540         err = device_add(dev);
541         if (err < 0)
542                 return err;
543
544         if (!bt_debugfs)
545                 return 0;
546
547         hdev->debugfs = debugfs_create_dir(hdev->name, bt_debugfs);
548         if (!hdev->debugfs)
549                 return 0;
550
551         debugfs_create_file("inquiry_cache", 0444, hdev->debugfs,
552                                                 hdev, &inquiry_cache_fops);
553
554         debugfs_create_file("blacklist", 0444, hdev->debugfs,
555                                                 hdev, &blacklist_fops);
556
557         debugfs_create_file("uuids", 0444, hdev->debugfs, hdev, &uuids_fops);
558
559         debugfs_create_file("auto_accept_delay", 0444, hdev->debugfs, hdev,
560                                                 &auto_accept_delay_fops);
561         return 0;
562 }
563
564 void hci_del_sysfs(struct hci_dev *hdev)
565 {
566         BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus);
567
568         debugfs_remove_recursive(hdev->debugfs);
569
570         device_del(&hdev->dev);
571 }
572
573 int __init bt_sysfs_init(void)
574 {
575         bt_debugfs = debugfs_create_dir("bluetooth", NULL);
576
577         bt_class = class_create(THIS_MODULE, "bluetooth");
578         if (IS_ERR(bt_class))
579                 return PTR_ERR(bt_class);
580
581         return 0;
582 }
583
584 void bt_sysfs_cleanup(void)
585 {
586         class_destroy(bt_class);
587
588         debugfs_remove_recursive(bt_debugfs);
589 }