Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* Bluetooth HCI driver model support. */ |
2 | ||
1da177e4 LT |
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 | ||
90855d7b MH |
9 | struct class *bt_class = NULL; |
10 | EXPORT_SYMBOL_GPL(bt_class); | |
11 | ||
a67e899c | 12 | static struct workqueue_struct *bt_workq; |
1da177e4 | 13 | |
90855d7b MH |
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 | { | |
f3784d83 | 90 | struct hci_conn *conn = container_of(work, struct hci_conn, work_add); |
90855d7b | 91 | |
a67e899c MH |
92 | /* ensure previous del is complete */ |
93 | flush_work(&conn->work_del); | |
90855d7b MH |
94 | |
95 | if (device_add(&conn->dev) < 0) { | |
96 | BT_ERR("Failed to register connection device"); | |
97 | return; | |
98 | } | |
99 | } | |
100 | ||
90855d7b MH |
101 | /* |
102 | * The rfcomm tty device will possibly retain even when conn | |
103 | * is down, and sysfs doesn't support move zombie device, | |
104 | * so we should move the device before conn device is destroyed. | |
105 | */ | |
106 | static int __match_tty(struct device *dev, void *data) | |
107 | { | |
fb28ad35 | 108 | return !strncmp(dev_name(dev), "rfcomm", 6); |
90855d7b MH |
109 | } |
110 | ||
111 | static void del_conn(struct work_struct *work) | |
112 | { | |
f3784d83 | 113 | struct hci_conn *conn = container_of(work, struct hci_conn, work_del); |
90855d7b MH |
114 | struct hci_dev *hdev = conn->hdev; |
115 | ||
a67e899c MH |
116 | /* ensure previous add is complete */ |
117 | flush_work(&conn->work_add); | |
118 | ||
119 | if (!device_is_registered(&conn->dev)) | |
120 | return; | |
f3784d83 | 121 | |
90855d7b MH |
122 | while (1) { |
123 | struct device *dev; | |
124 | ||
125 | dev = device_find_child(&conn->dev, NULL, __match_tty); | |
126 | if (!dev) | |
127 | break; | |
ffa6a705 | 128 | device_move(dev, NULL, DPM_ORDER_DEV_LAST); |
90855d7b MH |
129 | put_device(dev); |
130 | } | |
131 | ||
132 | device_del(&conn->dev); | |
133 | put_device(&conn->dev); | |
134 | hci_dev_put(hdev); | |
135 | } | |
136 | ||
a67e899c | 137 | void hci_conn_init_sysfs(struct hci_conn *conn) |
90855d7b | 138 | { |
a67e899c MH |
139 | struct hci_dev *hdev = conn->hdev; |
140 | ||
90855d7b MH |
141 | BT_DBG("conn %p", conn); |
142 | ||
a67e899c MH |
143 | conn->dev.type = &bt_link; |
144 | conn->dev.class = bt_class; | |
145 | conn->dev.parent = &hdev->dev; | |
146 | ||
147 | dev_set_drvdata(&conn->dev, conn); | |
90855d7b | 148 | |
a67e899c MH |
149 | device_initialize(&conn->dev); |
150 | ||
151 | INIT_WORK(&conn->work_add, add_conn); | |
f3784d83 | 152 | INIT_WORK(&conn->work_del, del_conn); |
a67e899c MH |
153 | } |
154 | ||
155 | void hci_conn_add_sysfs(struct hci_conn *conn) | |
156 | { | |
157 | struct hci_dev *hdev = conn->hdev; | |
158 | ||
159 | BT_DBG("conn %p", conn); | |
160 | ||
161 | dev_set_name(&conn->dev, "%s:%d", hdev->name, conn->handle); | |
162 | ||
163 | queue_work(bt_workq, &conn->work_add); | |
164 | } | |
165 | ||
166 | void hci_conn_del_sysfs(struct hci_conn *conn) | |
167 | { | |
168 | BT_DBG("conn %p", conn); | |
90855d7b | 169 | |
a67e899c | 170 | queue_work(bt_workq, &conn->work_del); |
90855d7b MH |
171 | } |
172 | ||
173 | static inline char *host_typetostr(int type) | |
1da177e4 | 174 | { |
4d0eb004 | 175 | switch (type) { |
0ac53939 | 176 | case HCI_VIRTUAL: |
4d0eb004 MH |
177 | return "VIRTUAL"; |
178 | case HCI_USB: | |
179 | return "USB"; | |
180 | case HCI_PCCARD: | |
181 | return "PCCARD"; | |
182 | case HCI_UART: | |
183 | return "UART"; | |
184 | case HCI_RS232: | |
185 | return "RS232"; | |
186 | case HCI_PCI: | |
187 | return "PCI"; | |
0ac53939 MH |
188 | case HCI_SDIO: |
189 | return "SDIO"; | |
4d0eb004 MH |
190 | default: |
191 | return "UNKNOWN"; | |
192 | } | |
1da177e4 LT |
193 | } |
194 | ||
a91f2e39 | 195 | static ssize_t show_type(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 | 196 | { |
a91f2e39 | 197 | struct hci_dev *hdev = dev_get_drvdata(dev); |
90855d7b | 198 | return sprintf(buf, "%s\n", host_typetostr(hdev->type)); |
1da177e4 LT |
199 | } |
200 | ||
a9de9248 MH |
201 | static ssize_t show_name(struct device *dev, struct device_attribute *attr, char *buf) |
202 | { | |
203 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
204 | char name[249]; | |
205 | int i; | |
206 | ||
207 | for (i = 0; i < 248; i++) | |
208 | name[i] = hdev->dev_name[i]; | |
209 | ||
210 | name[248] = '\0'; | |
211 | return sprintf(buf, "%s\n", name); | |
212 | } | |
213 | ||
214 | static ssize_t show_class(struct device *dev, struct device_attribute *attr, char *buf) | |
215 | { | |
216 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
217 | return sprintf(buf, "0x%.2x%.2x%.2x\n", | |
218 | hdev->dev_class[2], hdev->dev_class[1], hdev->dev_class[0]); | |
219 | } | |
220 | ||
a91f2e39 | 221 | static ssize_t show_address(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 | 222 | { |
a91f2e39 | 223 | struct hci_dev *hdev = dev_get_drvdata(dev); |
1da177e4 LT |
224 | bdaddr_t bdaddr; |
225 | baswap(&bdaddr, &hdev->bdaddr); | |
226 | return sprintf(buf, "%s\n", batostr(&bdaddr)); | |
227 | } | |
228 | ||
a9de9248 MH |
229 | static ssize_t show_features(struct device *dev, struct device_attribute *attr, char *buf) |
230 | { | |
231 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
232 | ||
233 | return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", | |
234 | hdev->features[0], hdev->features[1], | |
235 | hdev->features[2], hdev->features[3], | |
236 | hdev->features[4], hdev->features[5], | |
237 | hdev->features[6], hdev->features[7]); | |
238 | } | |
239 | ||
1143e5a6 MH |
240 | static ssize_t show_manufacturer(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->manufacturer); | |
244 | } | |
245 | ||
246 | static ssize_t show_hci_version(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_ver); | |
250 | } | |
251 | ||
252 | static ssize_t show_hci_revision(struct device *dev, struct device_attribute *attr, char *buf) | |
253 | { | |
254 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
255 | return sprintf(buf, "%d\n", hdev->hci_rev); | |
256 | } | |
257 | ||
a91f2e39 | 258 | static ssize_t show_inquiry_cache(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 | 259 | { |
a91f2e39 | 260 | struct hci_dev *hdev = dev_get_drvdata(dev); |
1da177e4 LT |
261 | struct inquiry_cache *cache = &hdev->inq_cache; |
262 | struct inquiry_entry *e; | |
263 | int n = 0; | |
264 | ||
265 | hci_dev_lock_bh(hdev); | |
266 | ||
267 | for (e = cache->list; e; e = e->next) { | |
268 | struct inquiry_data *data = &e->data; | |
269 | bdaddr_t bdaddr; | |
270 | baswap(&bdaddr, &data->bdaddr); | |
a8bd28ba | 271 | n += sprintf(buf + n, "%s %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n", |
1da177e4 | 272 | batostr(&bdaddr), |
a8bd28ba MH |
273 | data->pscan_rep_mode, data->pscan_period_mode, |
274 | data->pscan_mode, data->dev_class[2], | |
275 | data->dev_class[1], data->dev_class[0], | |
276 | __le16_to_cpu(data->clock_offset), | |
277 | data->rssi, data->ssp_mode, e->timestamp); | |
1da177e4 LT |
278 | } |
279 | ||
280 | hci_dev_unlock_bh(hdev); | |
281 | return n; | |
282 | } | |
283 | ||
a91f2e39 | 284 | static ssize_t show_idle_timeout(struct device *dev, struct device_attribute *attr, char *buf) |
04837f64 | 285 | { |
a91f2e39 | 286 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
287 | return sprintf(buf, "%d\n", hdev->idle_timeout); |
288 | } | |
289 | ||
a91f2e39 | 290 | static ssize_t store_idle_timeout(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
04837f64 | 291 | { |
a91f2e39 | 292 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
293 | char *ptr; |
294 | __u32 val; | |
295 | ||
296 | val = simple_strtoul(buf, &ptr, 10); | |
297 | if (ptr == buf) | |
298 | return -EINVAL; | |
299 | ||
300 | if (val != 0 && (val < 500 || val > 3600000)) | |
301 | return -EINVAL; | |
302 | ||
303 | hdev->idle_timeout = val; | |
304 | ||
305 | return count; | |
306 | } | |
307 | ||
a91f2e39 | 308 | static ssize_t show_sniff_max_interval(struct device *dev, struct device_attribute *attr, char *buf) |
04837f64 | 309 | { |
a91f2e39 | 310 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
311 | return sprintf(buf, "%d\n", hdev->sniff_max_interval); |
312 | } | |
313 | ||
a91f2e39 | 314 | static ssize_t store_sniff_max_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
04837f64 | 315 | { |
a91f2e39 | 316 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
317 | char *ptr; |
318 | __u16 val; | |
319 | ||
320 | val = simple_strtoul(buf, &ptr, 10); | |
321 | if (ptr == buf) | |
322 | return -EINVAL; | |
323 | ||
324 | if (val < 0x0002 || val > 0xFFFE || val % 2) | |
325 | return -EINVAL; | |
326 | ||
327 | if (val < hdev->sniff_min_interval) | |
328 | return -EINVAL; | |
329 | ||
330 | hdev->sniff_max_interval = val; | |
331 | ||
332 | return count; | |
333 | } | |
334 | ||
a91f2e39 | 335 | static ssize_t show_sniff_min_interval(struct device *dev, struct device_attribute *attr, char *buf) |
04837f64 | 336 | { |
a91f2e39 | 337 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
338 | return sprintf(buf, "%d\n", hdev->sniff_min_interval); |
339 | } | |
340 | ||
a91f2e39 | 341 | static ssize_t store_sniff_min_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
04837f64 | 342 | { |
a91f2e39 | 343 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
344 | char *ptr; |
345 | __u16 val; | |
346 | ||
347 | val = simple_strtoul(buf, &ptr, 10); | |
348 | if (ptr == buf) | |
349 | return -EINVAL; | |
350 | ||
351 | if (val < 0x0002 || val > 0xFFFE || val % 2) | |
352 | return -EINVAL; | |
353 | ||
354 | if (val > hdev->sniff_max_interval) | |
355 | return -EINVAL; | |
356 | ||
357 | hdev->sniff_min_interval = val; | |
358 | ||
359 | return count; | |
360 | } | |
361 | ||
a91f2e39 | 362 | static DEVICE_ATTR(type, S_IRUGO, show_type, NULL); |
a9de9248 MH |
363 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); |
364 | static DEVICE_ATTR(class, S_IRUGO, show_class, NULL); | |
a91f2e39 | 365 | static DEVICE_ATTR(address, S_IRUGO, show_address, NULL); |
a9de9248 | 366 | static DEVICE_ATTR(features, S_IRUGO, show_features, NULL); |
1143e5a6 MH |
367 | static DEVICE_ATTR(manufacturer, S_IRUGO, show_manufacturer, NULL); |
368 | static DEVICE_ATTR(hci_version, S_IRUGO, show_hci_version, NULL); | |
369 | static DEVICE_ATTR(hci_revision, S_IRUGO, show_hci_revision, NULL); | |
a91f2e39 | 370 | static DEVICE_ATTR(inquiry_cache, S_IRUGO, show_inquiry_cache, NULL); |
1da177e4 | 371 | |
a91f2e39 | 372 | static DEVICE_ATTR(idle_timeout, S_IRUGO | S_IWUSR, |
04837f64 | 373 | show_idle_timeout, store_idle_timeout); |
a91f2e39 | 374 | static DEVICE_ATTR(sniff_max_interval, S_IRUGO | S_IWUSR, |
04837f64 | 375 | show_sniff_max_interval, store_sniff_max_interval); |
a91f2e39 | 376 | static DEVICE_ATTR(sniff_min_interval, S_IRUGO | S_IWUSR, |
04837f64 MH |
377 | show_sniff_min_interval, store_sniff_min_interval); |
378 | ||
90855d7b MH |
379 | static struct attribute *bt_host_attrs[] = { |
380 | &dev_attr_type.attr, | |
381 | &dev_attr_name.attr, | |
382 | &dev_attr_class.attr, | |
383 | &dev_attr_address.attr, | |
384 | &dev_attr_features.attr, | |
385 | &dev_attr_manufacturer.attr, | |
386 | &dev_attr_hci_version.attr, | |
387 | &dev_attr_hci_revision.attr, | |
388 | &dev_attr_inquiry_cache.attr, | |
389 | &dev_attr_idle_timeout.attr, | |
390 | &dev_attr_sniff_max_interval.attr, | |
391 | &dev_attr_sniff_min_interval.attr, | |
1da177e4 LT |
392 | NULL |
393 | }; | |
394 | ||
90855d7b MH |
395 | static struct attribute_group bt_host_group = { |
396 | .attrs = bt_host_attrs, | |
b219e3ac MH |
397 | }; |
398 | ||
90855d7b MH |
399 | static struct attribute_group *bt_host_groups[] = { |
400 | &bt_host_group, | |
401 | NULL | |
27d35284 MH |
402 | }; |
403 | ||
90855d7b | 404 | static void bt_host_release(struct device *dev) |
a91f2e39 | 405 | { |
b219e3ac MH |
406 | void *data = dev_get_drvdata(dev); |
407 | kfree(data); | |
408 | } | |
409 | ||
90855d7b MH |
410 | static struct device_type bt_host = { |
411 | .name = "host", | |
412 | .groups = bt_host_groups, | |
413 | .release = bt_host_release, | |
414 | }; | |
a91f2e39 | 415 | |
1da177e4 LT |
416 | int hci_register_sysfs(struct hci_dev *hdev) |
417 | { | |
a91f2e39 | 418 | struct device *dev = &hdev->dev; |
1da177e4 LT |
419 | int err; |
420 | ||
421 | BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type); | |
422 | ||
90855d7b MH |
423 | dev->type = &bt_host; |
424 | dev->class = bt_class; | |
e9c4bec6 | 425 | dev->parent = hdev->parent; |
a91f2e39 | 426 | |
2e792995 | 427 | dev_set_name(dev, "%s", hdev->name); |
1da177e4 | 428 | |
a91f2e39 | 429 | dev_set_drvdata(dev, hdev); |
27d35284 | 430 | |
a91f2e39 | 431 | err = device_register(dev); |
1da177e4 LT |
432 | if (err < 0) |
433 | return err; | |
434 | ||
1da177e4 LT |
435 | return 0; |
436 | } | |
437 | ||
438 | void hci_unregister_sysfs(struct hci_dev *hdev) | |
439 | { | |
1da177e4 LT |
440 | BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type); |
441 | ||
4d0eb004 | 442 | device_del(&hdev->dev); |
1da177e4 LT |
443 | } |
444 | ||
445 | int __init bt_sysfs_init(void) | |
446 | { | |
a67e899c MH |
447 | bt_workq = create_singlethread_workqueue("bluetooth"); |
448 | if (!bt_workq) | |
90855d7b | 449 | return -ENOMEM; |
27d35284 | 450 | |
a91f2e39 MH |
451 | bt_class = class_create(THIS_MODULE, "bluetooth"); |
452 | if (IS_ERR(bt_class)) { | |
a67e899c | 453 | destroy_workqueue(bt_workq); |
90855d7b | 454 | return PTR_ERR(bt_class); |
27d35284 MH |
455 | } |
456 | ||
457 | return 0; | |
1da177e4 LT |
458 | } |
459 | ||
860e13b5 | 460 | void bt_sysfs_cleanup(void) |
1da177e4 | 461 | { |
a67e899c | 462 | destroy_workqueue(bt_workq); |
5396c935 | 463 | |
a91f2e39 | 464 | class_destroy(bt_class); |
1da177e4 | 465 | } |