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 | ||
9 | #ifndef CONFIG_BT_HCI_CORE_DEBUG | |
10 | #undef BT_DBG | |
11 | #define BT_DBG(D...) | |
12 | #endif | |
90855d7b MH |
13 | |
14 | struct class *bt_class = NULL; | |
15 | EXPORT_SYMBOL_GPL(bt_class); | |
16 | ||
b6c06321 DY |
17 | static struct workqueue_struct *btaddconn; |
18 | static struct workqueue_struct *btdelconn; | |
1da177e4 | 19 | |
90855d7b MH |
20 | static inline char *link_typetostr(int type) |
21 | { | |
22 | switch (type) { | |
23 | case ACL_LINK: | |
24 | return "ACL"; | |
25 | case SCO_LINK: | |
26 | return "SCO"; | |
27 | case ESCO_LINK: | |
28 | return "eSCO"; | |
29 | default: | |
30 | return "UNKNOWN"; | |
31 | } | |
32 | } | |
33 | ||
34 | static ssize_t show_link_type(struct device *dev, struct device_attribute *attr, char *buf) | |
35 | { | |
36 | struct hci_conn *conn = dev_get_drvdata(dev); | |
37 | return sprintf(buf, "%s\n", link_typetostr(conn->type)); | |
38 | } | |
39 | ||
40 | static ssize_t show_link_address(struct device *dev, struct device_attribute *attr, char *buf) | |
41 | { | |
42 | struct hci_conn *conn = dev_get_drvdata(dev); | |
43 | bdaddr_t bdaddr; | |
44 | baswap(&bdaddr, &conn->dst); | |
45 | return sprintf(buf, "%s\n", batostr(&bdaddr)); | |
46 | } | |
47 | ||
48 | static ssize_t show_link_features(struct device *dev, struct device_attribute *attr, char *buf) | |
49 | { | |
50 | struct hci_conn *conn = dev_get_drvdata(dev); | |
51 | ||
52 | return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", | |
53 | conn->features[0], conn->features[1], | |
54 | conn->features[2], conn->features[3], | |
55 | conn->features[4], conn->features[5], | |
56 | conn->features[6], conn->features[7]); | |
57 | } | |
58 | ||
59 | #define LINK_ATTR(_name,_mode,_show,_store) \ | |
60 | struct device_attribute link_attr_##_name = __ATTR(_name,_mode,_show,_store) | |
61 | ||
62 | static LINK_ATTR(type, S_IRUGO, show_link_type, NULL); | |
63 | static LINK_ATTR(address, S_IRUGO, show_link_address, NULL); | |
64 | static LINK_ATTR(features, S_IRUGO, show_link_features, NULL); | |
65 | ||
66 | static struct attribute *bt_link_attrs[] = { | |
67 | &link_attr_type.attr, | |
68 | &link_attr_address.attr, | |
69 | &link_attr_features.attr, | |
70 | NULL | |
71 | }; | |
72 | ||
73 | static struct attribute_group bt_link_group = { | |
74 | .attrs = bt_link_attrs, | |
75 | }; | |
76 | ||
77 | static struct attribute_group *bt_link_groups[] = { | |
78 | &bt_link_group, | |
79 | NULL | |
80 | }; | |
81 | ||
82 | static void bt_link_release(struct device *dev) | |
83 | { | |
84 | void *data = dev_get_drvdata(dev); | |
85 | kfree(data); | |
86 | } | |
87 | ||
88 | static struct device_type bt_link = { | |
89 | .name = "link", | |
90 | .groups = bt_link_groups, | |
91 | .release = bt_link_release, | |
92 | }; | |
93 | ||
94 | static void add_conn(struct work_struct *work) | |
95 | { | |
96 | struct hci_conn *conn = container_of(work, struct hci_conn, work); | |
97 | ||
98 | flush_workqueue(btdelconn); | |
99 | ||
100 | if (device_add(&conn->dev) < 0) { | |
101 | BT_ERR("Failed to register connection device"); | |
102 | return; | |
103 | } | |
104 | } | |
105 | ||
106 | void hci_conn_add_sysfs(struct hci_conn *conn) | |
107 | { | |
108 | struct hci_dev *hdev = conn->hdev; | |
109 | ||
110 | BT_DBG("conn %p", conn); | |
111 | ||
112 | conn->dev.type = &bt_link; | |
113 | conn->dev.class = bt_class; | |
114 | conn->dev.parent = &hdev->dev; | |
115 | ||
116 | snprintf(conn->dev.bus_id, BUS_ID_SIZE, "%s:%d", | |
117 | hdev->name, conn->handle); | |
118 | ||
119 | dev_set_drvdata(&conn->dev, conn); | |
120 | ||
121 | device_initialize(&conn->dev); | |
122 | ||
123 | INIT_WORK(&conn->work, add_conn); | |
124 | ||
125 | queue_work(btaddconn, &conn->work); | |
126 | } | |
127 | ||
128 | /* | |
129 | * The rfcomm tty device will possibly retain even when conn | |
130 | * is down, and sysfs doesn't support move zombie device, | |
131 | * so we should move the device before conn device is destroyed. | |
132 | */ | |
133 | static int __match_tty(struct device *dev, void *data) | |
134 | { | |
135 | return !strncmp(dev->bus_id, "rfcomm", 6); | |
136 | } | |
137 | ||
138 | static void del_conn(struct work_struct *work) | |
139 | { | |
140 | struct hci_conn *conn = container_of(work, struct hci_conn, work); | |
141 | struct hci_dev *hdev = conn->hdev; | |
142 | ||
143 | while (1) { | |
144 | struct device *dev; | |
145 | ||
146 | dev = device_find_child(&conn->dev, NULL, __match_tty); | |
147 | if (!dev) | |
148 | break; | |
149 | device_move(dev, NULL); | |
150 | put_device(dev); | |
151 | } | |
152 | ||
153 | device_del(&conn->dev); | |
154 | put_device(&conn->dev); | |
155 | hci_dev_put(hdev); | |
156 | } | |
157 | ||
158 | void hci_conn_del_sysfs(struct hci_conn *conn) | |
159 | { | |
160 | BT_DBG("conn %p", conn); | |
161 | ||
162 | if (!device_is_registered(&conn->dev)) | |
163 | return; | |
164 | ||
165 | INIT_WORK(&conn->work, del_conn); | |
166 | ||
167 | queue_work(btdelconn, &conn->work); | |
168 | } | |
169 | ||
170 | static inline char *host_typetostr(int type) | |
1da177e4 | 171 | { |
4d0eb004 | 172 | switch (type) { |
0ac53939 | 173 | case HCI_VIRTUAL: |
4d0eb004 MH |
174 | return "VIRTUAL"; |
175 | case HCI_USB: | |
176 | return "USB"; | |
177 | case HCI_PCCARD: | |
178 | return "PCCARD"; | |
179 | case HCI_UART: | |
180 | return "UART"; | |
181 | case HCI_RS232: | |
182 | return "RS232"; | |
183 | case HCI_PCI: | |
184 | return "PCI"; | |
0ac53939 MH |
185 | case HCI_SDIO: |
186 | return "SDIO"; | |
4d0eb004 MH |
187 | default: |
188 | return "UNKNOWN"; | |
189 | } | |
1da177e4 LT |
190 | } |
191 | ||
a91f2e39 | 192 | static ssize_t show_type(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 | 193 | { |
a91f2e39 | 194 | struct hci_dev *hdev = dev_get_drvdata(dev); |
90855d7b | 195 | return sprintf(buf, "%s\n", host_typetostr(hdev->type)); |
1da177e4 LT |
196 | } |
197 | ||
a9de9248 MH |
198 | static ssize_t show_name(struct device *dev, struct device_attribute *attr, char *buf) |
199 | { | |
200 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
201 | char name[249]; | |
202 | int i; | |
203 | ||
204 | for (i = 0; i < 248; i++) | |
205 | name[i] = hdev->dev_name[i]; | |
206 | ||
207 | name[248] = '\0'; | |
208 | return sprintf(buf, "%s\n", name); | |
209 | } | |
210 | ||
211 | static ssize_t show_class(struct device *dev, struct device_attribute *attr, char *buf) | |
212 | { | |
213 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
214 | return sprintf(buf, "0x%.2x%.2x%.2x\n", | |
215 | hdev->dev_class[2], hdev->dev_class[1], hdev->dev_class[0]); | |
216 | } | |
217 | ||
a91f2e39 | 218 | static ssize_t show_address(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 | 219 | { |
a91f2e39 | 220 | struct hci_dev *hdev = dev_get_drvdata(dev); |
1da177e4 LT |
221 | bdaddr_t bdaddr; |
222 | baswap(&bdaddr, &hdev->bdaddr); | |
223 | return sprintf(buf, "%s\n", batostr(&bdaddr)); | |
224 | } | |
225 | ||
a9de9248 MH |
226 | static ssize_t show_features(struct device *dev, struct device_attribute *attr, char *buf) |
227 | { | |
228 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
229 | ||
230 | return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", | |
231 | hdev->features[0], hdev->features[1], | |
232 | hdev->features[2], hdev->features[3], | |
233 | hdev->features[4], hdev->features[5], | |
234 | hdev->features[6], hdev->features[7]); | |
235 | } | |
236 | ||
1143e5a6 MH |
237 | static ssize_t show_manufacturer(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->manufacturer); | |
241 | } | |
242 | ||
243 | static ssize_t show_hci_version(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_ver); | |
247 | } | |
248 | ||
249 | static ssize_t show_hci_revision(struct device *dev, struct device_attribute *attr, char *buf) | |
250 | { | |
251 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
252 | return sprintf(buf, "%d\n", hdev->hci_rev); | |
253 | } | |
254 | ||
a91f2e39 | 255 | static ssize_t show_inquiry_cache(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 | 256 | { |
a91f2e39 | 257 | struct hci_dev *hdev = dev_get_drvdata(dev); |
1da177e4 LT |
258 | struct inquiry_cache *cache = &hdev->inq_cache; |
259 | struct inquiry_entry *e; | |
260 | int n = 0; | |
261 | ||
262 | hci_dev_lock_bh(hdev); | |
263 | ||
264 | for (e = cache->list; e; e = e->next) { | |
265 | struct inquiry_data *data = &e->data; | |
266 | bdaddr_t bdaddr; | |
267 | baswap(&bdaddr, &data->bdaddr); | |
a8bd28ba | 268 | n += sprintf(buf + n, "%s %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n", |
1da177e4 | 269 | batostr(&bdaddr), |
a8bd28ba MH |
270 | data->pscan_rep_mode, data->pscan_period_mode, |
271 | data->pscan_mode, data->dev_class[2], | |
272 | data->dev_class[1], data->dev_class[0], | |
273 | __le16_to_cpu(data->clock_offset), | |
274 | data->rssi, data->ssp_mode, e->timestamp); | |
1da177e4 LT |
275 | } |
276 | ||
277 | hci_dev_unlock_bh(hdev); | |
278 | return n; | |
279 | } | |
280 | ||
a91f2e39 | 281 | static ssize_t show_idle_timeout(struct device *dev, struct device_attribute *attr, char *buf) |
04837f64 | 282 | { |
a91f2e39 | 283 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
284 | return sprintf(buf, "%d\n", hdev->idle_timeout); |
285 | } | |
286 | ||
a91f2e39 | 287 | static ssize_t store_idle_timeout(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
04837f64 | 288 | { |
a91f2e39 | 289 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
290 | char *ptr; |
291 | __u32 val; | |
292 | ||
293 | val = simple_strtoul(buf, &ptr, 10); | |
294 | if (ptr == buf) | |
295 | return -EINVAL; | |
296 | ||
297 | if (val != 0 && (val < 500 || val > 3600000)) | |
298 | return -EINVAL; | |
299 | ||
300 | hdev->idle_timeout = val; | |
301 | ||
302 | return count; | |
303 | } | |
304 | ||
a91f2e39 | 305 | static ssize_t show_sniff_max_interval(struct device *dev, struct device_attribute *attr, char *buf) |
04837f64 | 306 | { |
a91f2e39 | 307 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
308 | return sprintf(buf, "%d\n", hdev->sniff_max_interval); |
309 | } | |
310 | ||
a91f2e39 | 311 | static ssize_t store_sniff_max_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
04837f64 | 312 | { |
a91f2e39 | 313 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
314 | char *ptr; |
315 | __u16 val; | |
316 | ||
317 | val = simple_strtoul(buf, &ptr, 10); | |
318 | if (ptr == buf) | |
319 | return -EINVAL; | |
320 | ||
321 | if (val < 0x0002 || val > 0xFFFE || val % 2) | |
322 | return -EINVAL; | |
323 | ||
324 | if (val < hdev->sniff_min_interval) | |
325 | return -EINVAL; | |
326 | ||
327 | hdev->sniff_max_interval = val; | |
328 | ||
329 | return count; | |
330 | } | |
331 | ||
a91f2e39 | 332 | static ssize_t show_sniff_min_interval(struct device *dev, struct device_attribute *attr, char *buf) |
04837f64 | 333 | { |
a91f2e39 | 334 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
335 | return sprintf(buf, "%d\n", hdev->sniff_min_interval); |
336 | } | |
337 | ||
a91f2e39 | 338 | static ssize_t store_sniff_min_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
04837f64 | 339 | { |
a91f2e39 | 340 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
341 | char *ptr; |
342 | __u16 val; | |
343 | ||
344 | val = simple_strtoul(buf, &ptr, 10); | |
345 | if (ptr == buf) | |
346 | return -EINVAL; | |
347 | ||
348 | if (val < 0x0002 || val > 0xFFFE || val % 2) | |
349 | return -EINVAL; | |
350 | ||
351 | if (val > hdev->sniff_max_interval) | |
352 | return -EINVAL; | |
353 | ||
354 | hdev->sniff_min_interval = val; | |
355 | ||
356 | return count; | |
357 | } | |
358 | ||
a91f2e39 | 359 | static DEVICE_ATTR(type, S_IRUGO, show_type, NULL); |
a9de9248 MH |
360 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); |
361 | static DEVICE_ATTR(class, S_IRUGO, show_class, NULL); | |
a91f2e39 | 362 | static DEVICE_ATTR(address, S_IRUGO, show_address, NULL); |
a9de9248 | 363 | static DEVICE_ATTR(features, S_IRUGO, show_features, NULL); |
1143e5a6 MH |
364 | static DEVICE_ATTR(manufacturer, S_IRUGO, show_manufacturer, NULL); |
365 | static DEVICE_ATTR(hci_version, S_IRUGO, show_hci_version, NULL); | |
366 | static DEVICE_ATTR(hci_revision, S_IRUGO, show_hci_revision, NULL); | |
a91f2e39 | 367 | static DEVICE_ATTR(inquiry_cache, S_IRUGO, show_inquiry_cache, NULL); |
1da177e4 | 368 | |
a91f2e39 | 369 | static DEVICE_ATTR(idle_timeout, S_IRUGO | S_IWUSR, |
04837f64 | 370 | show_idle_timeout, store_idle_timeout); |
a91f2e39 | 371 | static DEVICE_ATTR(sniff_max_interval, S_IRUGO | S_IWUSR, |
04837f64 | 372 | show_sniff_max_interval, store_sniff_max_interval); |
a91f2e39 | 373 | static DEVICE_ATTR(sniff_min_interval, S_IRUGO | S_IWUSR, |
04837f64 MH |
374 | show_sniff_min_interval, store_sniff_min_interval); |
375 | ||
90855d7b MH |
376 | static struct attribute *bt_host_attrs[] = { |
377 | &dev_attr_type.attr, | |
378 | &dev_attr_name.attr, | |
379 | &dev_attr_class.attr, | |
380 | &dev_attr_address.attr, | |
381 | &dev_attr_features.attr, | |
382 | &dev_attr_manufacturer.attr, | |
383 | &dev_attr_hci_version.attr, | |
384 | &dev_attr_hci_revision.attr, | |
385 | &dev_attr_inquiry_cache.attr, | |
386 | &dev_attr_idle_timeout.attr, | |
387 | &dev_attr_sniff_max_interval.attr, | |
388 | &dev_attr_sniff_min_interval.attr, | |
1da177e4 LT |
389 | NULL |
390 | }; | |
391 | ||
90855d7b MH |
392 | static struct attribute_group bt_host_group = { |
393 | .attrs = bt_host_attrs, | |
b219e3ac MH |
394 | }; |
395 | ||
90855d7b MH |
396 | static struct attribute_group *bt_host_groups[] = { |
397 | &bt_host_group, | |
398 | NULL | |
27d35284 MH |
399 | }; |
400 | ||
90855d7b | 401 | static void bt_host_release(struct device *dev) |
a91f2e39 | 402 | { |
b219e3ac MH |
403 | void *data = dev_get_drvdata(dev); |
404 | kfree(data); | |
405 | } | |
406 | ||
90855d7b MH |
407 | static struct device_type bt_host = { |
408 | .name = "host", | |
409 | .groups = bt_host_groups, | |
410 | .release = bt_host_release, | |
411 | }; | |
a91f2e39 | 412 | |
1da177e4 LT |
413 | int hci_register_sysfs(struct hci_dev *hdev) |
414 | { | |
a91f2e39 | 415 | struct device *dev = &hdev->dev; |
1da177e4 LT |
416 | int err; |
417 | ||
418 | BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type); | |
419 | ||
90855d7b MH |
420 | dev->type = &bt_host; |
421 | dev->class = bt_class; | |
e9c4bec6 | 422 | dev->parent = hdev->parent; |
a91f2e39 MH |
423 | |
424 | strlcpy(dev->bus_id, hdev->name, BUS_ID_SIZE); | |
1da177e4 | 425 | |
a91f2e39 | 426 | dev_set_drvdata(dev, hdev); |
27d35284 | 427 | |
a91f2e39 | 428 | err = device_register(dev); |
1da177e4 LT |
429 | if (err < 0) |
430 | return err; | |
431 | ||
1da177e4 LT |
432 | return 0; |
433 | } | |
434 | ||
435 | void hci_unregister_sysfs(struct hci_dev *hdev) | |
436 | { | |
1da177e4 LT |
437 | BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type); |
438 | ||
4d0eb004 | 439 | device_del(&hdev->dev); |
1da177e4 LT |
440 | } |
441 | ||
442 | int __init bt_sysfs_init(void) | |
443 | { | |
b6c06321 | 444 | btaddconn = create_singlethread_workqueue("btaddconn"); |
90855d7b MH |
445 | if (!btaddconn) |
446 | return -ENOMEM; | |
5396c935 | 447 | |
b6c06321 DY |
448 | btdelconn = create_singlethread_workqueue("btdelconn"); |
449 | if (!btdelconn) { | |
90855d7b MH |
450 | destroy_workqueue(btaddconn); |
451 | return -ENOMEM; | |
b6c06321 | 452 | } |
27d35284 | 453 | |
a91f2e39 MH |
454 | bt_class = class_create(THIS_MODULE, "bluetooth"); |
455 | if (IS_ERR(bt_class)) { | |
90855d7b MH |
456 | destroy_workqueue(btdelconn); |
457 | destroy_workqueue(btaddconn); | |
458 | return PTR_ERR(bt_class); | |
27d35284 MH |
459 | } |
460 | ||
461 | return 0; | |
1da177e4 LT |
462 | } |
463 | ||
860e13b5 | 464 | void bt_sysfs_cleanup(void) |
1da177e4 | 465 | { |
b6c06321 DY |
466 | destroy_workqueue(btaddconn); |
467 | destroy_workqueue(btdelconn); | |
5396c935 | 468 | |
a91f2e39 | 469 | class_destroy(bt_class); |
1da177e4 | 470 | } |