Merge branch 'omap-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind...
[linux-2.6] / net / bluetooth / hci_sysfs.c
1 /* Bluetooth HCI driver model support. */
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
9 struct class *bt_class = NULL;
10 EXPORT_SYMBOL_GPL(bt_class);
11
12 static struct workqueue_struct *bt_workq;
13
14 static 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
28 static 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
34 static 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
42 static 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) \
54 struct device_attribute link_attr_##_name = __ATTR(_name,_mode,_show,_store)
55
56 static LINK_ATTR(type, S_IRUGO, show_link_type, NULL);
57 static LINK_ATTR(address, S_IRUGO, show_link_address, NULL);
58 static LINK_ATTR(features, S_IRUGO, show_link_features, NULL);
59
60 static struct attribute *bt_link_attrs[] = {
61         &link_attr_type.attr,
62         &link_attr_address.attr,
63         &link_attr_features.attr,
64         NULL
65 };
66
67 static struct attribute_group bt_link_group = {
68         .attrs = bt_link_attrs,
69 };
70
71 static struct attribute_group *bt_link_groups[] = {
72         &bt_link_group,
73         NULL
74 };
75
76 static void bt_link_release(struct device *dev)
77 {
78         void *data = dev_get_drvdata(dev);
79         kfree(data);
80 }
81
82 static struct device_type bt_link = {
83         .name    = "link",
84         .groups  = bt_link_groups,
85         .release = bt_link_release,
86 };
87
88 static 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         /* ensure previous del is complete */
94         flush_work(&conn->work_del);
95
96         dev_set_name(&conn->dev, "%s:%d", hdev->name, conn->handle);
97
98         if (device_add(&conn->dev) < 0) {
99                 BT_ERR("Failed to register connection device");
100                 return;
101         }
102
103         hci_dev_hold(hdev);
104 }
105
106 /*
107  * The rfcomm tty device will possibly retain even when conn
108  * is down, and sysfs doesn't support move zombie device,
109  * so we should move the device before conn device is destroyed.
110  */
111 static int __match_tty(struct device *dev, void *data)
112 {
113         return !strncmp(dev_name(dev), "rfcomm", 6);
114 }
115
116 static void del_conn(struct work_struct *work)
117 {
118         struct hci_conn *conn = container_of(work, struct hci_conn, work_del);
119         struct hci_dev *hdev = conn->hdev;
120
121         /* ensure previous add is complete */
122         flush_work(&conn->work_add);
123
124         if (!device_is_registered(&conn->dev))
125                 return;
126
127         while (1) {
128                 struct device *dev;
129
130                 dev = device_find_child(&conn->dev, NULL, __match_tty);
131                 if (!dev)
132                         break;
133                 device_move(dev, NULL, DPM_ORDER_DEV_LAST);
134                 put_device(dev);
135         }
136
137         device_del(&conn->dev);
138         put_device(&conn->dev);
139
140         hci_dev_put(hdev);
141 }
142
143 void hci_conn_init_sysfs(struct hci_conn *conn)
144 {
145         struct hci_dev *hdev = conn->hdev;
146
147         BT_DBG("conn %p", conn);
148
149         conn->dev.type = &bt_link;
150         conn->dev.class = bt_class;
151         conn->dev.parent = &hdev->dev;
152
153         dev_set_drvdata(&conn->dev, conn);
154
155         device_initialize(&conn->dev);
156
157         INIT_WORK(&conn->work_add, add_conn);
158         INIT_WORK(&conn->work_del, del_conn);
159 }
160
161 void hci_conn_add_sysfs(struct hci_conn *conn)
162 {
163         BT_DBG("conn %p", conn);
164
165         queue_work(bt_workq, &conn->work_add);
166 }
167
168 void hci_conn_del_sysfs(struct hci_conn *conn)
169 {
170         BT_DBG("conn %p", conn);
171
172         queue_work(bt_workq, &conn->work_del);
173 }
174
175 static inline char *host_typetostr(int type)
176 {
177         switch (type) {
178         case HCI_VIRTUAL:
179                 return "VIRTUAL";
180         case HCI_USB:
181                 return "USB";
182         case HCI_PCCARD:
183                 return "PCCARD";
184         case HCI_UART:
185                 return "UART";
186         case HCI_RS232:
187                 return "RS232";
188         case HCI_PCI:
189                 return "PCI";
190         case HCI_SDIO:
191                 return "SDIO";
192         default:
193                 return "UNKNOWN";
194         }
195 }
196
197 static ssize_t show_type(struct device *dev, struct device_attribute *attr, char *buf)
198 {
199         struct hci_dev *hdev = dev_get_drvdata(dev);
200         return sprintf(buf, "%s\n", host_typetostr(hdev->type));
201 }
202
203 static ssize_t show_name(struct device *dev, struct device_attribute *attr, char *buf)
204 {
205         struct hci_dev *hdev = dev_get_drvdata(dev);
206         char name[249];
207         int i;
208
209         for (i = 0; i < 248; i++)
210                 name[i] = hdev->dev_name[i];
211
212         name[248] = '\0';
213         return sprintf(buf, "%s\n", name);
214 }
215
216 static ssize_t show_class(struct device *dev, struct device_attribute *attr, char *buf)
217 {
218         struct hci_dev *hdev = dev_get_drvdata(dev);
219         return sprintf(buf, "0x%.2x%.2x%.2x\n",
220                         hdev->dev_class[2], hdev->dev_class[1], hdev->dev_class[0]);
221 }
222
223 static ssize_t show_address(struct device *dev, struct device_attribute *attr, char *buf)
224 {
225         struct hci_dev *hdev = dev_get_drvdata(dev);
226         bdaddr_t bdaddr;
227         baswap(&bdaddr, &hdev->bdaddr);
228         return sprintf(buf, "%s\n", batostr(&bdaddr));
229 }
230
231 static ssize_t show_features(struct device *dev, struct device_attribute *attr, char *buf)
232 {
233         struct hci_dev *hdev = dev_get_drvdata(dev);
234
235         return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
236                                 hdev->features[0], hdev->features[1],
237                                 hdev->features[2], hdev->features[3],
238                                 hdev->features[4], hdev->features[5],
239                                 hdev->features[6], hdev->features[7]);
240 }
241
242 static ssize_t show_manufacturer(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->manufacturer);
246 }
247
248 static ssize_t show_hci_version(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_ver);
252 }
253
254 static ssize_t show_hci_revision(struct device *dev, struct device_attribute *attr, char *buf)
255 {
256         struct hci_dev *hdev = dev_get_drvdata(dev);
257         return sprintf(buf, "%d\n", hdev->hci_rev);
258 }
259
260 static ssize_t show_inquiry_cache(struct device *dev, struct device_attribute *attr, char *buf)
261 {
262         struct hci_dev *hdev = dev_get_drvdata(dev);
263         struct inquiry_cache *cache = &hdev->inq_cache;
264         struct inquiry_entry *e;
265         int n = 0;
266
267         hci_dev_lock_bh(hdev);
268
269         for (e = cache->list; e; e = e->next) {
270                 struct inquiry_data *data = &e->data;
271                 bdaddr_t bdaddr;
272                 baswap(&bdaddr, &data->bdaddr);
273                 n += sprintf(buf + n, "%s %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n",
274                                 batostr(&bdaddr),
275                                 data->pscan_rep_mode, data->pscan_period_mode,
276                                 data->pscan_mode, data->dev_class[2],
277                                 data->dev_class[1], data->dev_class[0],
278                                 __le16_to_cpu(data->clock_offset),
279                                 data->rssi, data->ssp_mode, e->timestamp);
280         }
281
282         hci_dev_unlock_bh(hdev);
283         return n;
284 }
285
286 static ssize_t show_idle_timeout(struct device *dev, struct device_attribute *attr, char *buf)
287 {
288         struct hci_dev *hdev = dev_get_drvdata(dev);
289         return sprintf(buf, "%d\n", hdev->idle_timeout);
290 }
291
292 static ssize_t store_idle_timeout(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
293 {
294         struct hci_dev *hdev = dev_get_drvdata(dev);
295         char *ptr;
296         __u32 val;
297
298         val = simple_strtoul(buf, &ptr, 10);
299         if (ptr == buf)
300                 return -EINVAL;
301
302         if (val != 0 && (val < 500 || val > 3600000))
303                 return -EINVAL;
304
305         hdev->idle_timeout = val;
306
307         return count;
308 }
309
310 static ssize_t show_sniff_max_interval(struct device *dev, struct device_attribute *attr, char *buf)
311 {
312         struct hci_dev *hdev = dev_get_drvdata(dev);
313         return sprintf(buf, "%d\n", hdev->sniff_max_interval);
314 }
315
316 static ssize_t store_sniff_max_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
317 {
318         struct hci_dev *hdev = dev_get_drvdata(dev);
319         char *ptr;
320         __u16 val;
321
322         val = simple_strtoul(buf, &ptr, 10);
323         if (ptr == buf)
324                 return -EINVAL;
325
326         if (val < 0x0002 || val > 0xFFFE || val % 2)
327                 return -EINVAL;
328
329         if (val < hdev->sniff_min_interval)
330                 return -EINVAL;
331
332         hdev->sniff_max_interval = val;
333
334         return count;
335 }
336
337 static ssize_t show_sniff_min_interval(struct device *dev, struct device_attribute *attr, char *buf)
338 {
339         struct hci_dev *hdev = dev_get_drvdata(dev);
340         return sprintf(buf, "%d\n", hdev->sniff_min_interval);
341 }
342
343 static ssize_t store_sniff_min_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
344 {
345         struct hci_dev *hdev = dev_get_drvdata(dev);
346         char *ptr;
347         __u16 val;
348
349         val = simple_strtoul(buf, &ptr, 10);
350         if (ptr == buf)
351                 return -EINVAL;
352
353         if (val < 0x0002 || val > 0xFFFE || val % 2)
354                 return -EINVAL;
355
356         if (val > hdev->sniff_max_interval)
357                 return -EINVAL;
358
359         hdev->sniff_min_interval = val;
360
361         return count;
362 }
363
364 static DEVICE_ATTR(type, S_IRUGO, show_type, NULL);
365 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
366 static DEVICE_ATTR(class, S_IRUGO, show_class, NULL);
367 static DEVICE_ATTR(address, S_IRUGO, show_address, NULL);
368 static DEVICE_ATTR(features, S_IRUGO, show_features, NULL);
369 static DEVICE_ATTR(manufacturer, S_IRUGO, show_manufacturer, NULL);
370 static DEVICE_ATTR(hci_version, S_IRUGO, show_hci_version, NULL);
371 static DEVICE_ATTR(hci_revision, S_IRUGO, show_hci_revision, NULL);
372 static DEVICE_ATTR(inquiry_cache, S_IRUGO, show_inquiry_cache, NULL);
373
374 static DEVICE_ATTR(idle_timeout, S_IRUGO | S_IWUSR,
375                                 show_idle_timeout, store_idle_timeout);
376 static DEVICE_ATTR(sniff_max_interval, S_IRUGO | S_IWUSR,
377                                 show_sniff_max_interval, store_sniff_max_interval);
378 static DEVICE_ATTR(sniff_min_interval, S_IRUGO | S_IWUSR,
379                                 show_sniff_min_interval, store_sniff_min_interval);
380
381 static struct attribute *bt_host_attrs[] = {
382         &dev_attr_type.attr,
383         &dev_attr_name.attr,
384         &dev_attr_class.attr,
385         &dev_attr_address.attr,
386         &dev_attr_features.attr,
387         &dev_attr_manufacturer.attr,
388         &dev_attr_hci_version.attr,
389         &dev_attr_hci_revision.attr,
390         &dev_attr_inquiry_cache.attr,
391         &dev_attr_idle_timeout.attr,
392         &dev_attr_sniff_max_interval.attr,
393         &dev_attr_sniff_min_interval.attr,
394         NULL
395 };
396
397 static struct attribute_group bt_host_group = {
398         .attrs = bt_host_attrs,
399 };
400
401 static struct attribute_group *bt_host_groups[] = {
402         &bt_host_group,
403         NULL
404 };
405
406 static void bt_host_release(struct device *dev)
407 {
408         void *data = dev_get_drvdata(dev);
409         kfree(data);
410 }
411
412 static struct device_type bt_host = {
413         .name    = "host",
414         .groups  = bt_host_groups,
415         .release = bt_host_release,
416 };
417
418 int hci_register_sysfs(struct hci_dev *hdev)
419 {
420         struct device *dev = &hdev->dev;
421         int err;
422
423         BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type);
424
425         dev->type = &bt_host;
426         dev->class = bt_class;
427         dev->parent = hdev->parent;
428
429         dev_set_name(dev, "%s", hdev->name);
430
431         dev_set_drvdata(dev, hdev);
432
433         err = device_register(dev);
434         if (err < 0)
435                 return err;
436
437         return 0;
438 }
439
440 void hci_unregister_sysfs(struct hci_dev *hdev)
441 {
442         BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type);
443
444         device_del(&hdev->dev);
445 }
446
447 int __init bt_sysfs_init(void)
448 {
449         bt_workq = create_singlethread_workqueue("bluetooth");
450         if (!bt_workq)
451                 return -ENOMEM;
452
453         bt_class = class_create(THIS_MODULE, "bluetooth");
454         if (IS_ERR(bt_class)) {
455                 destroy_workqueue(bt_workq);
456                 return PTR_ERR(bt_class);
457         }
458
459         return 0;
460 }
461
462 void bt_sysfs_cleanup(void)
463 {
464         destroy_workqueue(bt_workq);
465
466         class_destroy(bt_class);
467 }