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 | ||
b6c06321 DY |
12 | static struct workqueue_struct *btaddconn; |
13 | static struct workqueue_struct *btdelconn; | |
1da177e4 | 14 | |
90855d7b MH |
15 | static inline char *link_typetostr(int type) |
16 | { | |
17 | switch (type) { | |
18 | case ACL_LINK: | |
19 | return "ACL"; | |
20 | case SCO_LINK: | |
21 | return "SCO"; | |
22 | case ESCO_LINK: | |
23 | return "eSCO"; | |
24 | default: | |
25 | return "UNKNOWN"; | |
26 | } | |
27 | } | |
28 | ||
29 | static ssize_t show_link_type(struct device *dev, struct device_attribute *attr, char *buf) | |
30 | { | |
31 | struct hci_conn *conn = dev_get_drvdata(dev); | |
32 | return sprintf(buf, "%s\n", link_typetostr(conn->type)); | |
33 | } | |
34 | ||
35 | static ssize_t show_link_address(struct device *dev, struct device_attribute *attr, char *buf) | |
36 | { | |
37 | struct hci_conn *conn = dev_get_drvdata(dev); | |
38 | bdaddr_t bdaddr; | |
39 | baswap(&bdaddr, &conn->dst); | |
40 | return sprintf(buf, "%s\n", batostr(&bdaddr)); | |
41 | } | |
42 | ||
43 | static ssize_t show_link_features(struct device *dev, struct device_attribute *attr, char *buf) | |
44 | { | |
45 | struct hci_conn *conn = dev_get_drvdata(dev); | |
46 | ||
47 | return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", | |
48 | conn->features[0], conn->features[1], | |
49 | conn->features[2], conn->features[3], | |
50 | conn->features[4], conn->features[5], | |
51 | conn->features[6], conn->features[7]); | |
52 | } | |
53 | ||
54 | #define LINK_ATTR(_name,_mode,_show,_store) \ | |
55 | struct device_attribute link_attr_##_name = __ATTR(_name,_mode,_show,_store) | |
56 | ||
57 | static LINK_ATTR(type, S_IRUGO, show_link_type, NULL); | |
58 | static LINK_ATTR(address, S_IRUGO, show_link_address, NULL); | |
59 | static LINK_ATTR(features, S_IRUGO, show_link_features, NULL); | |
60 | ||
61 | static struct attribute *bt_link_attrs[] = { | |
62 | &link_attr_type.attr, | |
63 | &link_attr_address.attr, | |
64 | &link_attr_features.attr, | |
65 | NULL | |
66 | }; | |
67 | ||
68 | static struct attribute_group bt_link_group = { | |
69 | .attrs = bt_link_attrs, | |
70 | }; | |
71 | ||
72 | static struct attribute_group *bt_link_groups[] = { | |
73 | &bt_link_group, | |
74 | NULL | |
75 | }; | |
76 | ||
77 | static void bt_link_release(struct device *dev) | |
78 | { | |
79 | void *data = dev_get_drvdata(dev); | |
80 | kfree(data); | |
81 | } | |
82 | ||
83 | static struct device_type bt_link = { | |
84 | .name = "link", | |
85 | .groups = bt_link_groups, | |
86 | .release = bt_link_release, | |
87 | }; | |
88 | ||
89 | static void add_conn(struct work_struct *work) | |
90 | { | |
91 | struct hci_conn *conn = container_of(work, struct hci_conn, work); | |
92 | ||
93 | flush_workqueue(btdelconn); | |
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 | ||
fb28ad35 | 111 | dev_set_name(&conn->dev, "%s:%d", hdev->name, conn->handle); |
90855d7b MH |
112 | |
113 | dev_set_drvdata(&conn->dev, conn); | |
114 | ||
115 | device_initialize(&conn->dev); | |
116 | ||
117 | INIT_WORK(&conn->work, add_conn); | |
118 | ||
119 | queue_work(btaddconn, &conn->work); | |
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 | { | |
fb28ad35 | 129 | return !strncmp(dev_name(dev), "rfcomm", 6); |
90855d7b MH |
130 | } |
131 | ||
132 | static void del_conn(struct work_struct *work) | |
133 | { | |
134 | struct hci_conn *conn = container_of(work, struct hci_conn, work); | |
135 | struct hci_dev *hdev = conn->hdev; | |
136 | ||
137 | while (1) { | |
138 | struct device *dev; | |
139 | ||
140 | dev = device_find_child(&conn->dev, NULL, __match_tty); | |
141 | if (!dev) | |
142 | break; | |
143 | device_move(dev, NULL); | |
144 | put_device(dev); | |
145 | } | |
146 | ||
147 | device_del(&conn->dev); | |
148 | put_device(&conn->dev); | |
149 | hci_dev_put(hdev); | |
150 | } | |
151 | ||
152 | void hci_conn_del_sysfs(struct hci_conn *conn) | |
153 | { | |
154 | BT_DBG("conn %p", conn); | |
155 | ||
156 | if (!device_is_registered(&conn->dev)) | |
157 | return; | |
158 | ||
159 | INIT_WORK(&conn->work, del_conn); | |
160 | ||
161 | queue_work(btdelconn, &conn->work); | |
162 | } | |
163 | ||
164 | static inline char *host_typetostr(int type) | |
1da177e4 | 165 | { |
4d0eb004 | 166 | switch (type) { |
0ac53939 | 167 | case HCI_VIRTUAL: |
4d0eb004 MH |
168 | return "VIRTUAL"; |
169 | case HCI_USB: | |
170 | return "USB"; | |
171 | case HCI_PCCARD: | |
172 | return "PCCARD"; | |
173 | case HCI_UART: | |
174 | return "UART"; | |
175 | case HCI_RS232: | |
176 | return "RS232"; | |
177 | case HCI_PCI: | |
178 | return "PCI"; | |
0ac53939 MH |
179 | case HCI_SDIO: |
180 | return "SDIO"; | |
4d0eb004 MH |
181 | default: |
182 | return "UNKNOWN"; | |
183 | } | |
1da177e4 LT |
184 | } |
185 | ||
a91f2e39 | 186 | static ssize_t show_type(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 | 187 | { |
a91f2e39 | 188 | struct hci_dev *hdev = dev_get_drvdata(dev); |
90855d7b | 189 | return sprintf(buf, "%s\n", host_typetostr(hdev->type)); |
1da177e4 LT |
190 | } |
191 | ||
a9de9248 MH |
192 | static ssize_t show_name(struct device *dev, struct device_attribute *attr, char *buf) |
193 | { | |
194 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
195 | char name[249]; | |
196 | int i; | |
197 | ||
198 | for (i = 0; i < 248; i++) | |
199 | name[i] = hdev->dev_name[i]; | |
200 | ||
201 | name[248] = '\0'; | |
202 | return sprintf(buf, "%s\n", name); | |
203 | } | |
204 | ||
205 | static ssize_t show_class(struct device *dev, struct device_attribute *attr, char *buf) | |
206 | { | |
207 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
208 | return sprintf(buf, "0x%.2x%.2x%.2x\n", | |
209 | hdev->dev_class[2], hdev->dev_class[1], hdev->dev_class[0]); | |
210 | } | |
211 | ||
a91f2e39 | 212 | static ssize_t show_address(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 | 213 | { |
a91f2e39 | 214 | struct hci_dev *hdev = dev_get_drvdata(dev); |
1da177e4 LT |
215 | bdaddr_t bdaddr; |
216 | baswap(&bdaddr, &hdev->bdaddr); | |
217 | return sprintf(buf, "%s\n", batostr(&bdaddr)); | |
218 | } | |
219 | ||
a9de9248 MH |
220 | static ssize_t show_features(struct device *dev, struct device_attribute *attr, char *buf) |
221 | { | |
222 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
223 | ||
224 | return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", | |
225 | hdev->features[0], hdev->features[1], | |
226 | hdev->features[2], hdev->features[3], | |
227 | hdev->features[4], hdev->features[5], | |
228 | hdev->features[6], hdev->features[7]); | |
229 | } | |
230 | ||
1143e5a6 MH |
231 | static ssize_t show_manufacturer(struct device *dev, struct device_attribute *attr, char *buf) |
232 | { | |
233 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
234 | return sprintf(buf, "%d\n", hdev->manufacturer); | |
235 | } | |
236 | ||
237 | static ssize_t show_hci_version(struct device *dev, struct device_attribute *attr, char *buf) | |
238 | { | |
239 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
240 | return sprintf(buf, "%d\n", hdev->hci_ver); | |
241 | } | |
242 | ||
243 | static ssize_t show_hci_revision(struct device *dev, struct device_attribute *attr, char *buf) | |
244 | { | |
245 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
246 | return sprintf(buf, "%d\n", hdev->hci_rev); | |
247 | } | |
248 | ||
a91f2e39 | 249 | static ssize_t show_inquiry_cache(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 | 250 | { |
a91f2e39 | 251 | struct hci_dev *hdev = dev_get_drvdata(dev); |
1da177e4 LT |
252 | struct inquiry_cache *cache = &hdev->inq_cache; |
253 | struct inquiry_entry *e; | |
254 | int n = 0; | |
255 | ||
256 | hci_dev_lock_bh(hdev); | |
257 | ||
258 | for (e = cache->list; e; e = e->next) { | |
259 | struct inquiry_data *data = &e->data; | |
260 | bdaddr_t bdaddr; | |
261 | baswap(&bdaddr, &data->bdaddr); | |
a8bd28ba | 262 | n += sprintf(buf + n, "%s %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n", |
1da177e4 | 263 | batostr(&bdaddr), |
a8bd28ba MH |
264 | data->pscan_rep_mode, data->pscan_period_mode, |
265 | data->pscan_mode, data->dev_class[2], | |
266 | data->dev_class[1], data->dev_class[0], | |
267 | __le16_to_cpu(data->clock_offset), | |
268 | data->rssi, data->ssp_mode, e->timestamp); | |
1da177e4 LT |
269 | } |
270 | ||
271 | hci_dev_unlock_bh(hdev); | |
272 | return n; | |
273 | } | |
274 | ||
a91f2e39 | 275 | static ssize_t show_idle_timeout(struct device *dev, struct device_attribute *attr, char *buf) |
04837f64 | 276 | { |
a91f2e39 | 277 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
278 | return sprintf(buf, "%d\n", hdev->idle_timeout); |
279 | } | |
280 | ||
a91f2e39 | 281 | static ssize_t store_idle_timeout(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
04837f64 | 282 | { |
a91f2e39 | 283 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
284 | char *ptr; |
285 | __u32 val; | |
286 | ||
287 | val = simple_strtoul(buf, &ptr, 10); | |
288 | if (ptr == buf) | |
289 | return -EINVAL; | |
290 | ||
291 | if (val != 0 && (val < 500 || val > 3600000)) | |
292 | return -EINVAL; | |
293 | ||
294 | hdev->idle_timeout = val; | |
295 | ||
296 | return count; | |
297 | } | |
298 | ||
a91f2e39 | 299 | static ssize_t show_sniff_max_interval(struct device *dev, struct device_attribute *attr, char *buf) |
04837f64 | 300 | { |
a91f2e39 | 301 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
302 | return sprintf(buf, "%d\n", hdev->sniff_max_interval); |
303 | } | |
304 | ||
a91f2e39 | 305 | static ssize_t store_sniff_max_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
04837f64 | 306 | { |
a91f2e39 | 307 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
308 | char *ptr; |
309 | __u16 val; | |
310 | ||
311 | val = simple_strtoul(buf, &ptr, 10); | |
312 | if (ptr == buf) | |
313 | return -EINVAL; | |
314 | ||
315 | if (val < 0x0002 || val > 0xFFFE || val % 2) | |
316 | return -EINVAL; | |
317 | ||
318 | if (val < hdev->sniff_min_interval) | |
319 | return -EINVAL; | |
320 | ||
321 | hdev->sniff_max_interval = val; | |
322 | ||
323 | return count; | |
324 | } | |
325 | ||
a91f2e39 | 326 | static ssize_t show_sniff_min_interval(struct device *dev, struct device_attribute *attr, char *buf) |
04837f64 | 327 | { |
a91f2e39 | 328 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
329 | return sprintf(buf, "%d\n", hdev->sniff_min_interval); |
330 | } | |
331 | ||
a91f2e39 | 332 | static ssize_t store_sniff_min_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
04837f64 | 333 | { |
a91f2e39 | 334 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
335 | char *ptr; |
336 | __u16 val; | |
337 | ||
338 | val = simple_strtoul(buf, &ptr, 10); | |
339 | if (ptr == buf) | |
340 | return -EINVAL; | |
341 | ||
342 | if (val < 0x0002 || val > 0xFFFE || val % 2) | |
343 | return -EINVAL; | |
344 | ||
345 | if (val > hdev->sniff_max_interval) | |
346 | return -EINVAL; | |
347 | ||
348 | hdev->sniff_min_interval = val; | |
349 | ||
350 | return count; | |
351 | } | |
352 | ||
a91f2e39 | 353 | static DEVICE_ATTR(type, S_IRUGO, show_type, NULL); |
a9de9248 MH |
354 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); |
355 | static DEVICE_ATTR(class, S_IRUGO, show_class, NULL); | |
a91f2e39 | 356 | static DEVICE_ATTR(address, S_IRUGO, show_address, NULL); |
a9de9248 | 357 | static DEVICE_ATTR(features, S_IRUGO, show_features, NULL); |
1143e5a6 MH |
358 | static DEVICE_ATTR(manufacturer, S_IRUGO, show_manufacturer, NULL); |
359 | static DEVICE_ATTR(hci_version, S_IRUGO, show_hci_version, NULL); | |
360 | static DEVICE_ATTR(hci_revision, S_IRUGO, show_hci_revision, NULL); | |
a91f2e39 | 361 | static DEVICE_ATTR(inquiry_cache, S_IRUGO, show_inquiry_cache, NULL); |
1da177e4 | 362 | |
a91f2e39 | 363 | static DEVICE_ATTR(idle_timeout, S_IRUGO | S_IWUSR, |
04837f64 | 364 | show_idle_timeout, store_idle_timeout); |
a91f2e39 | 365 | static DEVICE_ATTR(sniff_max_interval, S_IRUGO | S_IWUSR, |
04837f64 | 366 | show_sniff_max_interval, store_sniff_max_interval); |
a91f2e39 | 367 | static DEVICE_ATTR(sniff_min_interval, S_IRUGO | S_IWUSR, |
04837f64 MH |
368 | show_sniff_min_interval, store_sniff_min_interval); |
369 | ||
90855d7b MH |
370 | static struct attribute *bt_host_attrs[] = { |
371 | &dev_attr_type.attr, | |
372 | &dev_attr_name.attr, | |
373 | &dev_attr_class.attr, | |
374 | &dev_attr_address.attr, | |
375 | &dev_attr_features.attr, | |
376 | &dev_attr_manufacturer.attr, | |
377 | &dev_attr_hci_version.attr, | |
378 | &dev_attr_hci_revision.attr, | |
379 | &dev_attr_inquiry_cache.attr, | |
380 | &dev_attr_idle_timeout.attr, | |
381 | &dev_attr_sniff_max_interval.attr, | |
382 | &dev_attr_sniff_min_interval.attr, | |
1da177e4 LT |
383 | NULL |
384 | }; | |
385 | ||
90855d7b MH |
386 | static struct attribute_group bt_host_group = { |
387 | .attrs = bt_host_attrs, | |
b219e3ac MH |
388 | }; |
389 | ||
90855d7b MH |
390 | static struct attribute_group *bt_host_groups[] = { |
391 | &bt_host_group, | |
392 | NULL | |
27d35284 MH |
393 | }; |
394 | ||
90855d7b | 395 | static void bt_host_release(struct device *dev) |
a91f2e39 | 396 | { |
b219e3ac MH |
397 | void *data = dev_get_drvdata(dev); |
398 | kfree(data); | |
399 | } | |
400 | ||
90855d7b MH |
401 | static struct device_type bt_host = { |
402 | .name = "host", | |
403 | .groups = bt_host_groups, | |
404 | .release = bt_host_release, | |
405 | }; | |
a91f2e39 | 406 | |
1da177e4 LT |
407 | int hci_register_sysfs(struct hci_dev *hdev) |
408 | { | |
a91f2e39 | 409 | struct device *dev = &hdev->dev; |
1da177e4 LT |
410 | int err; |
411 | ||
412 | BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type); | |
413 | ||
90855d7b MH |
414 | dev->type = &bt_host; |
415 | dev->class = bt_class; | |
e9c4bec6 | 416 | dev->parent = hdev->parent; |
a91f2e39 | 417 | |
2e792995 | 418 | dev_set_name(dev, "%s", hdev->name); |
1da177e4 | 419 | |
a91f2e39 | 420 | dev_set_drvdata(dev, hdev); |
27d35284 | 421 | |
a91f2e39 | 422 | err = device_register(dev); |
1da177e4 LT |
423 | if (err < 0) |
424 | return err; | |
425 | ||
1da177e4 LT |
426 | return 0; |
427 | } | |
428 | ||
429 | void hci_unregister_sysfs(struct hci_dev *hdev) | |
430 | { | |
1da177e4 LT |
431 | BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type); |
432 | ||
4d0eb004 | 433 | device_del(&hdev->dev); |
1da177e4 LT |
434 | } |
435 | ||
436 | int __init bt_sysfs_init(void) | |
437 | { | |
b6c06321 | 438 | btaddconn = create_singlethread_workqueue("btaddconn"); |
90855d7b MH |
439 | if (!btaddconn) |
440 | return -ENOMEM; | |
5396c935 | 441 | |
b6c06321 DY |
442 | btdelconn = create_singlethread_workqueue("btdelconn"); |
443 | if (!btdelconn) { | |
90855d7b MH |
444 | destroy_workqueue(btaddconn); |
445 | return -ENOMEM; | |
b6c06321 | 446 | } |
27d35284 | 447 | |
a91f2e39 MH |
448 | bt_class = class_create(THIS_MODULE, "bluetooth"); |
449 | if (IS_ERR(bt_class)) { | |
90855d7b MH |
450 | destroy_workqueue(btdelconn); |
451 | destroy_workqueue(btaddconn); | |
452 | return PTR_ERR(bt_class); | |
27d35284 MH |
453 | } |
454 | ||
455 | return 0; | |
1da177e4 LT |
456 | } |
457 | ||
860e13b5 | 458 | void bt_sysfs_cleanup(void) |
1da177e4 | 459 | { |
b6c06321 DY |
460 | destroy_workqueue(btaddconn); |
461 | destroy_workqueue(btdelconn); | |
5396c935 | 462 | |
a91f2e39 | 463 | class_destroy(bt_class); |
1da177e4 | 464 | } |