Merge branch 'x86-mce-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[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 *bluetooth;
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
92         /* ensure previous add/del is complete */
93         flush_workqueue(bluetooth);
94
95         if (device_add(&conn->dev) < 0) {
96                 BT_ERR("Failed to register connection device");
97                 return;
98         }
99 }
100
101 void hci_conn_add_sysfs(struct hci_conn *conn)
102 {
103         struct hci_dev *hdev = conn->hdev;
104
105         BT_DBG("conn %p", conn);
106
107         conn->dev.type = &bt_link;
108         conn->dev.class = bt_class;
109         conn->dev.parent = &hdev->dev;
110
111         dev_set_name(&conn->dev, "%s:%d", hdev->name, conn->handle);
112
113         dev_set_drvdata(&conn->dev, conn);
114
115         device_initialize(&conn->dev);
116
117         INIT_WORK(&conn->work_add, add_conn);
118
119         queue_work(bluetooth, &conn->work_add);
120 }
121
122 /*
123  * The rfcomm tty device will possibly retain even when conn
124  * is down, and sysfs doesn't support move zombie device,
125  * so we should move the device before conn device is destroyed.
126  */
127 static int __match_tty(struct device *dev, void *data)
128 {
129         return !strncmp(dev_name(dev), "rfcomm", 6);
130 }
131
132 static void del_conn(struct work_struct *work)
133 {
134         struct hci_conn *conn = container_of(work, struct hci_conn, work_del);
135         struct hci_dev *hdev = conn->hdev;
136
137         /* ensure previous add/del is complete */
138         flush_workqueue(bluetooth);
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         hci_dev_put(hdev);
153 }
154
155 void hci_conn_del_sysfs(struct hci_conn *conn)
156 {
157         BT_DBG("conn %p", conn);
158
159         if (!device_is_registered(&conn->dev))
160                 return;
161
162         INIT_WORK(&conn->work_del, del_conn);
163
164         queue_work(bluetooth, &conn->work_del);
165 }
166
167 static inline char *host_typetostr(int type)
168 {
169         switch (type) {
170         case HCI_VIRTUAL:
171                 return "VIRTUAL";
172         case HCI_USB:
173                 return "USB";
174         case HCI_PCCARD:
175                 return "PCCARD";
176         case HCI_UART:
177                 return "UART";
178         case HCI_RS232:
179                 return "RS232";
180         case HCI_PCI:
181                 return "PCI";
182         case HCI_SDIO:
183                 return "SDIO";
184         default:
185                 return "UNKNOWN";
186         }
187 }
188
189 static ssize_t show_type(struct device *dev, struct device_attribute *attr, char *buf)
190 {
191         struct hci_dev *hdev = dev_get_drvdata(dev);
192         return sprintf(buf, "%s\n", host_typetostr(hdev->type));
193 }
194
195 static ssize_t show_name(struct device *dev, struct device_attribute *attr, char *buf)
196 {
197         struct hci_dev *hdev = dev_get_drvdata(dev);
198         char name[249];
199         int i;
200
201         for (i = 0; i < 248; i++)
202                 name[i] = hdev->dev_name[i];
203
204         name[248] = '\0';
205         return sprintf(buf, "%s\n", name);
206 }
207
208 static ssize_t show_class(struct device *dev, struct device_attribute *attr, char *buf)
209 {
210         struct hci_dev *hdev = dev_get_drvdata(dev);
211         return sprintf(buf, "0x%.2x%.2x%.2x\n",
212                         hdev->dev_class[2], hdev->dev_class[1], hdev->dev_class[0]);
213 }
214
215 static ssize_t show_address(struct device *dev, struct device_attribute *attr, char *buf)
216 {
217         struct hci_dev *hdev = dev_get_drvdata(dev);
218         bdaddr_t bdaddr;
219         baswap(&bdaddr, &hdev->bdaddr);
220         return sprintf(buf, "%s\n", batostr(&bdaddr));
221 }
222
223 static ssize_t show_features(struct device *dev, struct device_attribute *attr, char *buf)
224 {
225         struct hci_dev *hdev = dev_get_drvdata(dev);
226
227         return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
228                                 hdev->features[0], hdev->features[1],
229                                 hdev->features[2], hdev->features[3],
230                                 hdev->features[4], hdev->features[5],
231                                 hdev->features[6], hdev->features[7]);
232 }
233
234 static ssize_t show_manufacturer(struct device *dev, struct device_attribute *attr, char *buf)
235 {
236         struct hci_dev *hdev = dev_get_drvdata(dev);
237         return sprintf(buf, "%d\n", hdev->manufacturer);
238 }
239
240 static ssize_t show_hci_version(struct device *dev, struct device_attribute *attr, char *buf)
241 {
242         struct hci_dev *hdev = dev_get_drvdata(dev);
243         return sprintf(buf, "%d\n", hdev->hci_ver);
244 }
245
246 static ssize_t show_hci_revision(struct device *dev, struct device_attribute *attr, char *buf)
247 {
248         struct hci_dev *hdev = dev_get_drvdata(dev);
249         return sprintf(buf, "%d\n", hdev->hci_rev);
250 }
251
252 static ssize_t show_inquiry_cache(struct device *dev, struct device_attribute *attr, char *buf)
253 {
254         struct hci_dev *hdev = dev_get_drvdata(dev);
255         struct inquiry_cache *cache = &hdev->inq_cache;
256         struct inquiry_entry *e;
257         int n = 0;
258
259         hci_dev_lock_bh(hdev);
260
261         for (e = cache->list; e; e = e->next) {
262                 struct inquiry_data *data = &e->data;
263                 bdaddr_t bdaddr;
264                 baswap(&bdaddr, &data->bdaddr);
265                 n += sprintf(buf + n, "%s %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n",
266                                 batostr(&bdaddr),
267                                 data->pscan_rep_mode, data->pscan_period_mode,
268                                 data->pscan_mode, data->dev_class[2],
269                                 data->dev_class[1], data->dev_class[0],
270                                 __le16_to_cpu(data->clock_offset),
271                                 data->rssi, data->ssp_mode, e->timestamp);
272         }
273
274         hci_dev_unlock_bh(hdev);
275         return n;
276 }
277
278 static ssize_t show_idle_timeout(struct device *dev, struct device_attribute *attr, char *buf)
279 {
280         struct hci_dev *hdev = dev_get_drvdata(dev);
281         return sprintf(buf, "%d\n", hdev->idle_timeout);
282 }
283
284 static ssize_t store_idle_timeout(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
285 {
286         struct hci_dev *hdev = dev_get_drvdata(dev);
287         char *ptr;
288         __u32 val;
289
290         val = simple_strtoul(buf, &ptr, 10);
291         if (ptr == buf)
292                 return -EINVAL;
293
294         if (val != 0 && (val < 500 || val > 3600000))
295                 return -EINVAL;
296
297         hdev->idle_timeout = val;
298
299         return count;
300 }
301
302 static ssize_t show_sniff_max_interval(struct device *dev, struct device_attribute *attr, char *buf)
303 {
304         struct hci_dev *hdev = dev_get_drvdata(dev);
305         return sprintf(buf, "%d\n", hdev->sniff_max_interval);
306 }
307
308 static ssize_t store_sniff_max_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
309 {
310         struct hci_dev *hdev = dev_get_drvdata(dev);
311         char *ptr;
312         __u16 val;
313
314         val = simple_strtoul(buf, &ptr, 10);
315         if (ptr == buf)
316                 return -EINVAL;
317
318         if (val < 0x0002 || val > 0xFFFE || val % 2)
319                 return -EINVAL;
320
321         if (val < hdev->sniff_min_interval)
322                 return -EINVAL;
323
324         hdev->sniff_max_interval = val;
325
326         return count;
327 }
328
329 static ssize_t show_sniff_min_interval(struct device *dev, struct device_attribute *attr, char *buf)
330 {
331         struct hci_dev *hdev = dev_get_drvdata(dev);
332         return sprintf(buf, "%d\n", hdev->sniff_min_interval);
333 }
334
335 static ssize_t store_sniff_min_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
336 {
337         struct hci_dev *hdev = dev_get_drvdata(dev);
338         char *ptr;
339         __u16 val;
340
341         val = simple_strtoul(buf, &ptr, 10);
342         if (ptr == buf)
343                 return -EINVAL;
344
345         if (val < 0x0002 || val > 0xFFFE || val % 2)
346                 return -EINVAL;
347
348         if (val > hdev->sniff_max_interval)
349                 return -EINVAL;
350
351         hdev->sniff_min_interval = val;
352
353         return count;
354 }
355
356 static DEVICE_ATTR(type, S_IRUGO, show_type, NULL);
357 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
358 static DEVICE_ATTR(class, S_IRUGO, show_class, NULL);
359 static DEVICE_ATTR(address, S_IRUGO, show_address, NULL);
360 static DEVICE_ATTR(features, S_IRUGO, show_features, NULL);
361 static DEVICE_ATTR(manufacturer, S_IRUGO, show_manufacturer, NULL);
362 static DEVICE_ATTR(hci_version, S_IRUGO, show_hci_version, NULL);
363 static DEVICE_ATTR(hci_revision, S_IRUGO, show_hci_revision, NULL);
364 static DEVICE_ATTR(inquiry_cache, S_IRUGO, show_inquiry_cache, NULL);
365
366 static DEVICE_ATTR(idle_timeout, S_IRUGO | S_IWUSR,
367                                 show_idle_timeout, store_idle_timeout);
368 static DEVICE_ATTR(sniff_max_interval, S_IRUGO | S_IWUSR,
369                                 show_sniff_max_interval, store_sniff_max_interval);
370 static DEVICE_ATTR(sniff_min_interval, S_IRUGO | S_IWUSR,
371                                 show_sniff_min_interval, store_sniff_min_interval);
372
373 static struct attribute *bt_host_attrs[] = {
374         &dev_attr_type.attr,
375         &dev_attr_name.attr,
376         &dev_attr_class.attr,
377         &dev_attr_address.attr,
378         &dev_attr_features.attr,
379         &dev_attr_manufacturer.attr,
380         &dev_attr_hci_version.attr,
381         &dev_attr_hci_revision.attr,
382         &dev_attr_inquiry_cache.attr,
383         &dev_attr_idle_timeout.attr,
384         &dev_attr_sniff_max_interval.attr,
385         &dev_attr_sniff_min_interval.attr,
386         NULL
387 };
388
389 static struct attribute_group bt_host_group = {
390         .attrs = bt_host_attrs,
391 };
392
393 static struct attribute_group *bt_host_groups[] = {
394         &bt_host_group,
395         NULL
396 };
397
398 static void bt_host_release(struct device *dev)
399 {
400         void *data = dev_get_drvdata(dev);
401         kfree(data);
402 }
403
404 static struct device_type bt_host = {
405         .name    = "host",
406         .groups  = bt_host_groups,
407         .release = bt_host_release,
408 };
409
410 int hci_register_sysfs(struct hci_dev *hdev)
411 {
412         struct device *dev = &hdev->dev;
413         int err;
414
415         BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type);
416
417         dev->type = &bt_host;
418         dev->class = bt_class;
419         dev->parent = hdev->parent;
420
421         dev_set_name(dev, "%s", hdev->name);
422
423         dev_set_drvdata(dev, hdev);
424
425         err = device_register(dev);
426         if (err < 0)
427                 return err;
428
429         return 0;
430 }
431
432 void hci_unregister_sysfs(struct hci_dev *hdev)
433 {
434         BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type);
435
436         device_del(&hdev->dev);
437 }
438
439 int __init bt_sysfs_init(void)
440 {
441         bluetooth = create_singlethread_workqueue("bluetooth");
442         if (!bluetooth)
443                 return -ENOMEM;
444
445         bt_class = class_create(THIS_MODULE, "bluetooth");
446         if (IS_ERR(bt_class)) {
447                 destroy_workqueue(bluetooth);
448                 return PTR_ERR(bt_class);
449         }
450
451         return 0;
452 }
453
454 void bt_sysfs_cleanup(void)
455 {
456         destroy_workqueue(bluetooth);
457
458         class_destroy(bt_class);
459 }