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); |
457ca7bb | 91 | struct hci_dev *hdev = conn->hdev; |
90855d7b | 92 | |
a67e899c MH |
93 | /* ensure previous del is complete */ |
94 | flush_work(&conn->work_del); | |
90855d7b | 95 | |
457ca7bb MH |
96 | dev_set_name(&conn->dev, "%s:%d", hdev->name, conn->handle); |
97 | ||
90855d7b MH |
98 | if (device_add(&conn->dev) < 0) { |
99 | BT_ERR("Failed to register connection device"); | |
100 | return; | |
101 | } | |
102 | } | |
103 | ||
90855d7b MH |
104 | /* |
105 | * The rfcomm tty device will possibly retain even when conn | |
106 | * is down, and sysfs doesn't support move zombie device, | |
107 | * so we should move the device before conn device is destroyed. | |
108 | */ | |
109 | static int __match_tty(struct device *dev, void *data) | |
110 | { | |
fb28ad35 | 111 | return !strncmp(dev_name(dev), "rfcomm", 6); |
90855d7b MH |
112 | } |
113 | ||
114 | static void del_conn(struct work_struct *work) | |
115 | { | |
f3784d83 | 116 | struct hci_conn *conn = container_of(work, struct hci_conn, work_del); |
90855d7b MH |
117 | struct hci_dev *hdev = conn->hdev; |
118 | ||
a67e899c MH |
119 | /* ensure previous add is complete */ |
120 | flush_work(&conn->work_add); | |
121 | ||
122 | if (!device_is_registered(&conn->dev)) | |
123 | return; | |
f3784d83 | 124 | |
90855d7b MH |
125 | while (1) { |
126 | struct device *dev; | |
127 | ||
128 | dev = device_find_child(&conn->dev, NULL, __match_tty); | |
129 | if (!dev) | |
130 | break; | |
ffa6a705 | 131 | device_move(dev, NULL, DPM_ORDER_DEV_LAST); |
90855d7b MH |
132 | put_device(dev); |
133 | } | |
134 | ||
135 | device_del(&conn->dev); | |
136 | put_device(&conn->dev); | |
137 | hci_dev_put(hdev); | |
138 | } | |
139 | ||
a67e899c | 140 | void hci_conn_init_sysfs(struct hci_conn *conn) |
90855d7b | 141 | { |
a67e899c MH |
142 | struct hci_dev *hdev = conn->hdev; |
143 | ||
90855d7b MH |
144 | BT_DBG("conn %p", conn); |
145 | ||
a67e899c MH |
146 | conn->dev.type = &bt_link; |
147 | conn->dev.class = bt_class; | |
148 | conn->dev.parent = &hdev->dev; | |
149 | ||
150 | dev_set_drvdata(&conn->dev, conn); | |
90855d7b | 151 | |
a67e899c MH |
152 | device_initialize(&conn->dev); |
153 | ||
154 | INIT_WORK(&conn->work_add, add_conn); | |
f3784d83 | 155 | INIT_WORK(&conn->work_del, del_conn); |
a67e899c MH |
156 | } |
157 | ||
158 | void hci_conn_add_sysfs(struct hci_conn *conn) | |
159 | { | |
a67e899c MH |
160 | BT_DBG("conn %p", conn); |
161 | ||
a67e899c MH |
162 | queue_work(bt_workq, &conn->work_add); |
163 | } | |
164 | ||
165 | void hci_conn_del_sysfs(struct hci_conn *conn) | |
166 | { | |
167 | BT_DBG("conn %p", conn); | |
90855d7b | 168 | |
a67e899c | 169 | queue_work(bt_workq, &conn->work_del); |
90855d7b MH |
170 | } |
171 | ||
172 | static inline char *host_typetostr(int type) | |
1da177e4 | 173 | { |
4d0eb004 | 174 | switch (type) { |
0ac53939 | 175 | case HCI_VIRTUAL: |
4d0eb004 MH |
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"; | |
0ac53939 MH |
187 | case HCI_SDIO: |
188 | return "SDIO"; | |
4d0eb004 MH |
189 | default: |
190 | return "UNKNOWN"; | |
191 | } | |
1da177e4 LT |
192 | } |
193 | ||
a91f2e39 | 194 | static ssize_t show_type(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 | 195 | { |
a91f2e39 | 196 | struct hci_dev *hdev = dev_get_drvdata(dev); |
90855d7b | 197 | return sprintf(buf, "%s\n", host_typetostr(hdev->type)); |
1da177e4 LT |
198 | } |
199 | ||
a9de9248 MH |
200 | static ssize_t show_name(struct device *dev, struct device_attribute *attr, char *buf) |
201 | { | |
202 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
203 | char name[249]; | |
204 | int i; | |
205 | ||
206 | for (i = 0; i < 248; i++) | |
207 | name[i] = hdev->dev_name[i]; | |
208 | ||
209 | name[248] = '\0'; | |
210 | return sprintf(buf, "%s\n", name); | |
211 | } | |
212 | ||
213 | static ssize_t show_class(struct device *dev, struct device_attribute *attr, char *buf) | |
214 | { | |
215 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
216 | return sprintf(buf, "0x%.2x%.2x%.2x\n", | |
217 | hdev->dev_class[2], hdev->dev_class[1], hdev->dev_class[0]); | |
218 | } | |
219 | ||
a91f2e39 | 220 | static ssize_t show_address(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 | 221 | { |
a91f2e39 | 222 | struct hci_dev *hdev = dev_get_drvdata(dev); |
1da177e4 LT |
223 | bdaddr_t bdaddr; |
224 | baswap(&bdaddr, &hdev->bdaddr); | |
225 | return sprintf(buf, "%s\n", batostr(&bdaddr)); | |
226 | } | |
227 | ||
a9de9248 MH |
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 | ||
1143e5a6 MH |
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 | ||
a91f2e39 | 257 | static ssize_t show_inquiry_cache(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 | 258 | { |
a91f2e39 | 259 | struct hci_dev *hdev = dev_get_drvdata(dev); |
1da177e4 LT |
260 | struct inquiry_cache *cache = &hdev->inq_cache; |
261 | struct inquiry_entry *e; | |
262 | int n = 0; | |
263 | ||
264 | hci_dev_lock_bh(hdev); | |
265 | ||
266 | for (e = cache->list; e; e = e->next) { | |
267 | struct inquiry_data *data = &e->data; | |
268 | bdaddr_t bdaddr; | |
269 | baswap(&bdaddr, &data->bdaddr); | |
a8bd28ba | 270 | n += sprintf(buf + n, "%s %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n", |
1da177e4 | 271 | batostr(&bdaddr), |
a8bd28ba MH |
272 | data->pscan_rep_mode, data->pscan_period_mode, |
273 | data->pscan_mode, data->dev_class[2], | |
274 | data->dev_class[1], data->dev_class[0], | |
275 | __le16_to_cpu(data->clock_offset), | |
276 | data->rssi, data->ssp_mode, e->timestamp); | |
1da177e4 LT |
277 | } |
278 | ||
279 | hci_dev_unlock_bh(hdev); | |
280 | return n; | |
281 | } | |
282 | ||
a91f2e39 | 283 | static ssize_t show_idle_timeout(struct device *dev, struct device_attribute *attr, char *buf) |
04837f64 | 284 | { |
a91f2e39 | 285 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
286 | return sprintf(buf, "%d\n", hdev->idle_timeout); |
287 | } | |
288 | ||
a91f2e39 | 289 | static ssize_t store_idle_timeout(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
04837f64 | 290 | { |
a91f2e39 | 291 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
292 | char *ptr; |
293 | __u32 val; | |
294 | ||
295 | val = simple_strtoul(buf, &ptr, 10); | |
296 | if (ptr == buf) | |
297 | return -EINVAL; | |
298 | ||
299 | if (val != 0 && (val < 500 || val > 3600000)) | |
300 | return -EINVAL; | |
301 | ||
302 | hdev->idle_timeout = val; | |
303 | ||
304 | return count; | |
305 | } | |
306 | ||
a91f2e39 | 307 | static ssize_t show_sniff_max_interval(struct device *dev, struct device_attribute *attr, char *buf) |
04837f64 | 308 | { |
a91f2e39 | 309 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
310 | return sprintf(buf, "%d\n", hdev->sniff_max_interval); |
311 | } | |
312 | ||
a91f2e39 | 313 | static ssize_t store_sniff_max_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
04837f64 | 314 | { |
a91f2e39 | 315 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
316 | char *ptr; |
317 | __u16 val; | |
318 | ||
319 | val = simple_strtoul(buf, &ptr, 10); | |
320 | if (ptr == buf) | |
321 | return -EINVAL; | |
322 | ||
323 | if (val < 0x0002 || val > 0xFFFE || val % 2) | |
324 | return -EINVAL; | |
325 | ||
326 | if (val < hdev->sniff_min_interval) | |
327 | return -EINVAL; | |
328 | ||
329 | hdev->sniff_max_interval = val; | |
330 | ||
331 | return count; | |
332 | } | |
333 | ||
a91f2e39 | 334 | static ssize_t show_sniff_min_interval(struct device *dev, struct device_attribute *attr, char *buf) |
04837f64 | 335 | { |
a91f2e39 | 336 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
337 | return sprintf(buf, "%d\n", hdev->sniff_min_interval); |
338 | } | |
339 | ||
a91f2e39 | 340 | static ssize_t store_sniff_min_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
04837f64 | 341 | { |
a91f2e39 | 342 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
343 | char *ptr; |
344 | __u16 val; | |
345 | ||
346 | val = simple_strtoul(buf, &ptr, 10); | |
347 | if (ptr == buf) | |
348 | return -EINVAL; | |
349 | ||
350 | if (val < 0x0002 || val > 0xFFFE || val % 2) | |
351 | return -EINVAL; | |
352 | ||
353 | if (val > hdev->sniff_max_interval) | |
354 | return -EINVAL; | |
355 | ||
356 | hdev->sniff_min_interval = val; | |
357 | ||
358 | return count; | |
359 | } | |
360 | ||
a91f2e39 | 361 | static DEVICE_ATTR(type, S_IRUGO, show_type, NULL); |
a9de9248 MH |
362 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); |
363 | static DEVICE_ATTR(class, S_IRUGO, show_class, NULL); | |
a91f2e39 | 364 | static DEVICE_ATTR(address, S_IRUGO, show_address, NULL); |
a9de9248 | 365 | static DEVICE_ATTR(features, S_IRUGO, show_features, NULL); |
1143e5a6 MH |
366 | static DEVICE_ATTR(manufacturer, S_IRUGO, show_manufacturer, NULL); |
367 | static DEVICE_ATTR(hci_version, S_IRUGO, show_hci_version, NULL); | |
368 | static DEVICE_ATTR(hci_revision, S_IRUGO, show_hci_revision, NULL); | |
a91f2e39 | 369 | static DEVICE_ATTR(inquiry_cache, S_IRUGO, show_inquiry_cache, NULL); |
1da177e4 | 370 | |
a91f2e39 | 371 | static DEVICE_ATTR(idle_timeout, S_IRUGO | S_IWUSR, |
04837f64 | 372 | show_idle_timeout, store_idle_timeout); |
a91f2e39 | 373 | static DEVICE_ATTR(sniff_max_interval, S_IRUGO | S_IWUSR, |
04837f64 | 374 | show_sniff_max_interval, store_sniff_max_interval); |
a91f2e39 | 375 | static DEVICE_ATTR(sniff_min_interval, S_IRUGO | S_IWUSR, |
04837f64 MH |
376 | show_sniff_min_interval, store_sniff_min_interval); |
377 | ||
90855d7b MH |
378 | static struct attribute *bt_host_attrs[] = { |
379 | &dev_attr_type.attr, | |
380 | &dev_attr_name.attr, | |
381 | &dev_attr_class.attr, | |
382 | &dev_attr_address.attr, | |
383 | &dev_attr_features.attr, | |
384 | &dev_attr_manufacturer.attr, | |
385 | &dev_attr_hci_version.attr, | |
386 | &dev_attr_hci_revision.attr, | |
387 | &dev_attr_inquiry_cache.attr, | |
388 | &dev_attr_idle_timeout.attr, | |
389 | &dev_attr_sniff_max_interval.attr, | |
390 | &dev_attr_sniff_min_interval.attr, | |
1da177e4 LT |
391 | NULL |
392 | }; | |
393 | ||
90855d7b MH |
394 | static struct attribute_group bt_host_group = { |
395 | .attrs = bt_host_attrs, | |
b219e3ac MH |
396 | }; |
397 | ||
90855d7b MH |
398 | static struct attribute_group *bt_host_groups[] = { |
399 | &bt_host_group, | |
400 | NULL | |
27d35284 MH |
401 | }; |
402 | ||
90855d7b | 403 | static void bt_host_release(struct device *dev) |
a91f2e39 | 404 | { |
b219e3ac MH |
405 | void *data = dev_get_drvdata(dev); |
406 | kfree(data); | |
407 | } | |
408 | ||
90855d7b MH |
409 | static struct device_type bt_host = { |
410 | .name = "host", | |
411 | .groups = bt_host_groups, | |
412 | .release = bt_host_release, | |
413 | }; | |
a91f2e39 | 414 | |
1da177e4 LT |
415 | int hci_register_sysfs(struct hci_dev *hdev) |
416 | { | |
a91f2e39 | 417 | struct device *dev = &hdev->dev; |
1da177e4 LT |
418 | int err; |
419 | ||
420 | BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type); | |
421 | ||
90855d7b MH |
422 | dev->type = &bt_host; |
423 | dev->class = bt_class; | |
e9c4bec6 | 424 | dev->parent = hdev->parent; |
a91f2e39 | 425 | |
2e792995 | 426 | dev_set_name(dev, "%s", hdev->name); |
1da177e4 | 427 | |
a91f2e39 | 428 | dev_set_drvdata(dev, hdev); |
27d35284 | 429 | |
a91f2e39 | 430 | err = device_register(dev); |
1da177e4 LT |
431 | if (err < 0) |
432 | return err; | |
433 | ||
1da177e4 LT |
434 | return 0; |
435 | } | |
436 | ||
437 | void hci_unregister_sysfs(struct hci_dev *hdev) | |
438 | { | |
1da177e4 LT |
439 | BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type); |
440 | ||
4d0eb004 | 441 | device_del(&hdev->dev); |
1da177e4 LT |
442 | } |
443 | ||
444 | int __init bt_sysfs_init(void) | |
445 | { | |
a67e899c MH |
446 | bt_workq = create_singlethread_workqueue("bluetooth"); |
447 | if (!bt_workq) | |
90855d7b | 448 | return -ENOMEM; |
27d35284 | 449 | |
a91f2e39 MH |
450 | bt_class = class_create(THIS_MODULE, "bluetooth"); |
451 | if (IS_ERR(bt_class)) { | |
a67e899c | 452 | destroy_workqueue(bt_workq); |
90855d7b | 453 | return PTR_ERR(bt_class); |
27d35284 MH |
454 | } |
455 | ||
456 | return 0; | |
1da177e4 LT |
457 | } |
458 | ||
860e13b5 | 459 | void bt_sysfs_cleanup(void) |
1da177e4 | 460 | { |
a67e899c | 461 | destroy_workqueue(bt_workq); |
5396c935 | 462 | |
a91f2e39 | 463 | class_destroy(bt_class); |
1da177e4 | 464 | } |