Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* Bluetooth HCI driver model support. */ |
2 | ||
1da177e4 | 3 | #include <linux/kernel.h> |
5a0e3ad6 | 4 | #include <linux/slab.h> |
1da177e4 | 5 | #include <linux/init.h> |
ca325f69 | 6 | #include <linux/debugfs.h> |
d4612cb8 | 7 | #include <linux/seq_file.h> |
1da177e4 LT |
8 | |
9 | #include <net/bluetooth/bluetooth.h> | |
10 | #include <net/bluetooth/hci_core.h> | |
11 | ||
aef7d97c | 12 | static struct class *bt_class; |
90855d7b | 13 | |
ca325f69 MH |
14 | struct dentry *bt_debugfs = NULL; |
15 | EXPORT_SYMBOL_GPL(bt_debugfs); | |
16 | ||
90855d7b MH |
17 | static inline char *link_typetostr(int type) |
18 | { | |
19 | switch (type) { | |
20 | case ACL_LINK: | |
21 | return "ACL"; | |
22 | case SCO_LINK: | |
23 | return "SCO"; | |
24 | case ESCO_LINK: | |
25 | return "eSCO"; | |
26 | default: | |
27 | return "UNKNOWN"; | |
28 | } | |
29 | } | |
30 | ||
31 | static ssize_t show_link_type(struct device *dev, struct device_attribute *attr, char *buf) | |
32 | { | |
33 | struct hci_conn *conn = dev_get_drvdata(dev); | |
34 | return sprintf(buf, "%s\n", link_typetostr(conn->type)); | |
35 | } | |
36 | ||
37 | static ssize_t show_link_address(struct device *dev, struct device_attribute *attr, char *buf) | |
38 | { | |
39 | struct hci_conn *conn = dev_get_drvdata(dev); | |
40 | bdaddr_t bdaddr; | |
41 | baswap(&bdaddr, &conn->dst); | |
42 | return sprintf(buf, "%s\n", batostr(&bdaddr)); | |
43 | } | |
44 | ||
45 | static ssize_t show_link_features(struct device *dev, struct device_attribute *attr, char *buf) | |
46 | { | |
47 | struct hci_conn *conn = dev_get_drvdata(dev); | |
48 | ||
49 | return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", | |
50 | conn->features[0], conn->features[1], | |
51 | conn->features[2], conn->features[3], | |
52 | conn->features[4], conn->features[5], | |
53 | conn->features[6], conn->features[7]); | |
54 | } | |
55 | ||
56 | #define LINK_ATTR(_name,_mode,_show,_store) \ | |
57 | struct device_attribute link_attr_##_name = __ATTR(_name,_mode,_show,_store) | |
58 | ||
59 | static LINK_ATTR(type, S_IRUGO, show_link_type, NULL); | |
60 | static LINK_ATTR(address, S_IRUGO, show_link_address, NULL); | |
61 | static LINK_ATTR(features, S_IRUGO, show_link_features, NULL); | |
62 | ||
63 | static struct attribute *bt_link_attrs[] = { | |
64 | &link_attr_type.attr, | |
65 | &link_attr_address.attr, | |
66 | &link_attr_features.attr, | |
67 | NULL | |
68 | }; | |
69 | ||
70 | static struct attribute_group bt_link_group = { | |
71 | .attrs = bt_link_attrs, | |
72 | }; | |
73 | ||
a4dbd674 | 74 | static const struct attribute_group *bt_link_groups[] = { |
90855d7b MH |
75 | &bt_link_group, |
76 | NULL | |
77 | }; | |
78 | ||
79 | static void bt_link_release(struct device *dev) | |
80 | { | |
81 | void *data = dev_get_drvdata(dev); | |
82 | kfree(data); | |
83 | } | |
84 | ||
85 | static struct device_type bt_link = { | |
86 | .name = "link", | |
87 | .groups = bt_link_groups, | |
88 | .release = bt_link_release, | |
89 | }; | |
90 | ||
91 | static void add_conn(struct work_struct *work) | |
92 | { | |
f3784d83 | 93 | struct hci_conn *conn = container_of(work, struct hci_conn, work_add); |
457ca7bb | 94 | struct hci_dev *hdev = conn->hdev; |
90855d7b | 95 | |
457ca7bb MH |
96 | dev_set_name(&conn->dev, "%s:%d", hdev->name, conn->handle); |
97 | ||
f74c77cb DY |
98 | dev_set_drvdata(&conn->dev, conn); |
99 | ||
90855d7b MH |
100 | if (device_add(&conn->dev) < 0) { |
101 | BT_ERR("Failed to register connection device"); | |
102 | return; | |
103 | } | |
384943ec MH |
104 | |
105 | hci_dev_hold(hdev); | |
90855d7b MH |
106 | } |
107 | ||
90855d7b MH |
108 | /* |
109 | * The rfcomm tty device will possibly retain even when conn | |
110 | * is down, and sysfs doesn't support move zombie device, | |
111 | * so we should move the device before conn device is destroyed. | |
112 | */ | |
113 | static int __match_tty(struct device *dev, void *data) | |
114 | { | |
fb28ad35 | 115 | return !strncmp(dev_name(dev), "rfcomm", 6); |
90855d7b MH |
116 | } |
117 | ||
118 | static void del_conn(struct work_struct *work) | |
119 | { | |
f3784d83 | 120 | struct hci_conn *conn = container_of(work, struct hci_conn, work_del); |
90855d7b MH |
121 | struct hci_dev *hdev = conn->hdev; |
122 | ||
a67e899c MH |
123 | if (!device_is_registered(&conn->dev)) |
124 | return; | |
f3784d83 | 125 | |
90855d7b MH |
126 | while (1) { |
127 | struct device *dev; | |
128 | ||
129 | dev = device_find_child(&conn->dev, NULL, __match_tty); | |
130 | if (!dev) | |
131 | break; | |
ffa6a705 | 132 | device_move(dev, NULL, DPM_ORDER_DEV_LAST); |
90855d7b MH |
133 | put_device(dev); |
134 | } | |
135 | ||
136 | device_del(&conn->dev); | |
137 | put_device(&conn->dev); | |
384943ec | 138 | |
90855d7b MH |
139 | hci_dev_put(hdev); |
140 | } | |
141 | ||
a67e899c | 142 | void hci_conn_init_sysfs(struct hci_conn *conn) |
90855d7b | 143 | { |
a67e899c MH |
144 | struct hci_dev *hdev = conn->hdev; |
145 | ||
90855d7b MH |
146 | BT_DBG("conn %p", conn); |
147 | ||
a67e899c MH |
148 | conn->dev.type = &bt_link; |
149 | conn->dev.class = bt_class; | |
150 | conn->dev.parent = &hdev->dev; | |
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 | ||
f48fd9c8 | 162 | queue_work(conn->hdev->workqueue, &conn->work_add); |
a67e899c MH |
163 | } |
164 | ||
165 | void hci_conn_del_sysfs(struct hci_conn *conn) | |
166 | { | |
167 | BT_DBG("conn %p", conn); | |
90855d7b | 168 | |
f48fd9c8 | 169 | queue_work(conn->hdev->workqueue, &conn->work_del); |
90855d7b MH |
170 | } |
171 | ||
c13854ce | 172 | static inline char *host_bustostr(int bus) |
1da177e4 | 173 | { |
c13854ce | 174 | switch (bus) { |
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 | ||
943da25d MH |
194 | static inline char *host_typetostr(int type) |
195 | { | |
196 | switch (type) { | |
197 | case HCI_BREDR: | |
198 | return "BR/EDR"; | |
199 | case HCI_80211: | |
200 | return "802.11"; | |
201 | default: | |
202 | return "UNKNOWN"; | |
203 | } | |
204 | } | |
205 | ||
c13854ce | 206 | static ssize_t show_bus(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 | 207 | { |
a91f2e39 | 208 | struct hci_dev *hdev = dev_get_drvdata(dev); |
c13854ce | 209 | return sprintf(buf, "%s\n", host_bustostr(hdev->bus)); |
1da177e4 LT |
210 | } |
211 | ||
943da25d MH |
212 | static ssize_t show_type(struct device *dev, struct device_attribute *attr, char *buf) |
213 | { | |
214 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
215 | return sprintf(buf, "%s\n", host_typetostr(hdev->dev_type)); | |
216 | } | |
217 | ||
a9de9248 MH |
218 | static ssize_t show_name(struct device *dev, struct device_attribute *attr, char *buf) |
219 | { | |
220 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
221 | char name[249]; | |
222 | int i; | |
223 | ||
224 | for (i = 0; i < 248; i++) | |
225 | name[i] = hdev->dev_name[i]; | |
226 | ||
227 | name[248] = '\0'; | |
228 | return sprintf(buf, "%s\n", name); | |
229 | } | |
230 | ||
231 | static ssize_t show_class(struct device *dev, struct device_attribute *attr, char *buf) | |
232 | { | |
233 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
234 | return sprintf(buf, "0x%.2x%.2x%.2x\n", | |
235 | hdev->dev_class[2], hdev->dev_class[1], hdev->dev_class[0]); | |
236 | } | |
237 | ||
a91f2e39 | 238 | static ssize_t show_address(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 | 239 | { |
a91f2e39 | 240 | struct hci_dev *hdev = dev_get_drvdata(dev); |
1da177e4 LT |
241 | bdaddr_t bdaddr; |
242 | baswap(&bdaddr, &hdev->bdaddr); | |
243 | return sprintf(buf, "%s\n", batostr(&bdaddr)); | |
244 | } | |
245 | ||
a9de9248 MH |
246 | static ssize_t show_features(struct device *dev, struct device_attribute *attr, char *buf) |
247 | { | |
248 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
249 | ||
250 | return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", | |
251 | hdev->features[0], hdev->features[1], | |
252 | hdev->features[2], hdev->features[3], | |
253 | hdev->features[4], hdev->features[5], | |
254 | hdev->features[6], hdev->features[7]); | |
255 | } | |
256 | ||
1143e5a6 MH |
257 | static ssize_t show_manufacturer(struct device *dev, struct device_attribute *attr, char *buf) |
258 | { | |
259 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
260 | return sprintf(buf, "%d\n", hdev->manufacturer); | |
261 | } | |
262 | ||
263 | static ssize_t show_hci_version(struct device *dev, struct device_attribute *attr, char *buf) | |
264 | { | |
265 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
266 | return sprintf(buf, "%d\n", hdev->hci_ver); | |
267 | } | |
268 | ||
269 | static ssize_t show_hci_revision(struct device *dev, struct device_attribute *attr, char *buf) | |
270 | { | |
271 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
272 | return sprintf(buf, "%d\n", hdev->hci_rev); | |
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); |
7b767cad | 284 | unsigned long val; |
04837f64 | 285 | |
7b767cad | 286 | if (strict_strtoul(buf, 0, &val) < 0) |
04837f64 MH |
287 | return -EINVAL; |
288 | ||
289 | if (val != 0 && (val < 500 || val > 3600000)) | |
290 | return -EINVAL; | |
291 | ||
292 | hdev->idle_timeout = val; | |
293 | ||
294 | return count; | |
295 | } | |
296 | ||
a91f2e39 | 297 | static ssize_t show_sniff_max_interval(struct device *dev, struct device_attribute *attr, char *buf) |
04837f64 | 298 | { |
a91f2e39 | 299 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
300 | return sprintf(buf, "%d\n", hdev->sniff_max_interval); |
301 | } | |
302 | ||
a91f2e39 | 303 | static ssize_t store_sniff_max_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
04837f64 | 304 | { |
a91f2e39 | 305 | struct hci_dev *hdev = dev_get_drvdata(dev); |
7b767cad | 306 | unsigned long val; |
04837f64 | 307 | |
7b767cad | 308 | if (strict_strtoul(buf, 0, &val) < 0) |
04837f64 MH |
309 | return -EINVAL; |
310 | ||
311 | if (val < 0x0002 || val > 0xFFFE || val % 2) | |
312 | return -EINVAL; | |
313 | ||
314 | if (val < hdev->sniff_min_interval) | |
315 | return -EINVAL; | |
316 | ||
317 | hdev->sniff_max_interval = val; | |
318 | ||
319 | return count; | |
320 | } | |
321 | ||
a91f2e39 | 322 | static ssize_t show_sniff_min_interval(struct device *dev, struct device_attribute *attr, char *buf) |
04837f64 | 323 | { |
a91f2e39 | 324 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
325 | return sprintf(buf, "%d\n", hdev->sniff_min_interval); |
326 | } | |
327 | ||
a91f2e39 | 328 | static ssize_t store_sniff_min_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
04837f64 | 329 | { |
a91f2e39 | 330 | struct hci_dev *hdev = dev_get_drvdata(dev); |
7b767cad | 331 | unsigned long val; |
04837f64 | 332 | |
7b767cad | 333 | if (strict_strtoul(buf, 0, &val) < 0) |
04837f64 MH |
334 | return -EINVAL; |
335 | ||
336 | if (val < 0x0002 || val > 0xFFFE || val % 2) | |
337 | return -EINVAL; | |
338 | ||
339 | if (val > hdev->sniff_max_interval) | |
340 | return -EINVAL; | |
341 | ||
342 | hdev->sniff_min_interval = val; | |
343 | ||
344 | return count; | |
345 | } | |
346 | ||
c13854ce | 347 | static DEVICE_ATTR(bus, S_IRUGO, show_bus, NULL); |
943da25d | 348 | static DEVICE_ATTR(type, S_IRUGO, show_type, NULL); |
a9de9248 MH |
349 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); |
350 | static DEVICE_ATTR(class, S_IRUGO, show_class, NULL); | |
a91f2e39 | 351 | static DEVICE_ATTR(address, S_IRUGO, show_address, NULL); |
a9de9248 | 352 | static DEVICE_ATTR(features, S_IRUGO, show_features, NULL); |
1143e5a6 MH |
353 | static DEVICE_ATTR(manufacturer, S_IRUGO, show_manufacturer, NULL); |
354 | static DEVICE_ATTR(hci_version, S_IRUGO, show_hci_version, NULL); | |
355 | static DEVICE_ATTR(hci_revision, S_IRUGO, show_hci_revision, NULL); | |
1da177e4 | 356 | |
a91f2e39 | 357 | static DEVICE_ATTR(idle_timeout, S_IRUGO | S_IWUSR, |
04837f64 | 358 | show_idle_timeout, store_idle_timeout); |
a91f2e39 | 359 | static DEVICE_ATTR(sniff_max_interval, S_IRUGO | S_IWUSR, |
04837f64 | 360 | show_sniff_max_interval, store_sniff_max_interval); |
a91f2e39 | 361 | static DEVICE_ATTR(sniff_min_interval, S_IRUGO | S_IWUSR, |
04837f64 MH |
362 | show_sniff_min_interval, store_sniff_min_interval); |
363 | ||
90855d7b | 364 | static struct attribute *bt_host_attrs[] = { |
c13854ce | 365 | &dev_attr_bus.attr, |
943da25d | 366 | &dev_attr_type.attr, |
90855d7b MH |
367 | &dev_attr_name.attr, |
368 | &dev_attr_class.attr, | |
369 | &dev_attr_address.attr, | |
370 | &dev_attr_features.attr, | |
371 | &dev_attr_manufacturer.attr, | |
372 | &dev_attr_hci_version.attr, | |
373 | &dev_attr_hci_revision.attr, | |
90855d7b MH |
374 | &dev_attr_idle_timeout.attr, |
375 | &dev_attr_sniff_max_interval.attr, | |
376 | &dev_attr_sniff_min_interval.attr, | |
1da177e4 LT |
377 | NULL |
378 | }; | |
379 | ||
90855d7b MH |
380 | static struct attribute_group bt_host_group = { |
381 | .attrs = bt_host_attrs, | |
b219e3ac MH |
382 | }; |
383 | ||
a4dbd674 | 384 | static const struct attribute_group *bt_host_groups[] = { |
90855d7b MH |
385 | &bt_host_group, |
386 | NULL | |
27d35284 MH |
387 | }; |
388 | ||
90855d7b | 389 | static void bt_host_release(struct device *dev) |
a91f2e39 | 390 | { |
b219e3ac MH |
391 | void *data = dev_get_drvdata(dev); |
392 | kfree(data); | |
393 | } | |
394 | ||
90855d7b MH |
395 | static struct device_type bt_host = { |
396 | .name = "host", | |
397 | .groups = bt_host_groups, | |
398 | .release = bt_host_release, | |
399 | }; | |
a91f2e39 | 400 | |
d4612cb8 | 401 | static int inquiry_cache_show(struct seq_file *f, void *p) |
ca325f69 | 402 | { |
d4612cb8 | 403 | struct hci_dev *hdev = f->private; |
ca325f69 MH |
404 | struct inquiry_cache *cache = &hdev->inq_cache; |
405 | struct inquiry_entry *e; | |
ca325f69 MH |
406 | |
407 | hci_dev_lock_bh(hdev); | |
408 | ||
409 | for (e = cache->list; e; e = e->next) { | |
410 | struct inquiry_data *data = &e->data; | |
411 | bdaddr_t bdaddr; | |
412 | baswap(&bdaddr, &data->bdaddr); | |
d4612cb8 MH |
413 | seq_printf(f, "%s %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n", |
414 | batostr(&bdaddr), | |
415 | data->pscan_rep_mode, data->pscan_period_mode, | |
416 | data->pscan_mode, data->dev_class[2], | |
417 | data->dev_class[1], data->dev_class[0], | |
418 | __le16_to_cpu(data->clock_offset), | |
419 | data->rssi, data->ssp_mode, e->timestamp); | |
ca325f69 MH |
420 | } |
421 | ||
422 | hci_dev_unlock_bh(hdev); | |
423 | ||
d4612cb8 MH |
424 | return 0; |
425 | } | |
426 | ||
427 | static int inquiry_cache_open(struct inode *inode, struct file *file) | |
428 | { | |
429 | return single_open(file, inquiry_cache_show, inode->i_private); | |
ca325f69 MH |
430 | } |
431 | ||
432 | static const struct file_operations inquiry_cache_fops = { | |
d4612cb8 MH |
433 | .open = inquiry_cache_open, |
434 | .read = seq_read, | |
435 | .llseek = seq_lseek, | |
436 | .release = single_release, | |
ca325f69 MH |
437 | }; |
438 | ||
1da177e4 LT |
439 | int hci_register_sysfs(struct hci_dev *hdev) |
440 | { | |
a91f2e39 | 441 | struct device *dev = &hdev->dev; |
1da177e4 LT |
442 | int err; |
443 | ||
c13854ce | 444 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 445 | |
90855d7b MH |
446 | dev->type = &bt_host; |
447 | dev->class = bt_class; | |
e9c4bec6 | 448 | dev->parent = hdev->parent; |
a91f2e39 | 449 | |
2e792995 | 450 | dev_set_name(dev, "%s", hdev->name); |
1da177e4 | 451 | |
a91f2e39 | 452 | dev_set_drvdata(dev, hdev); |
27d35284 | 453 | |
a91f2e39 | 454 | err = device_register(dev); |
1da177e4 LT |
455 | if (err < 0) |
456 | return err; | |
457 | ||
ca325f69 MH |
458 | if (!bt_debugfs) |
459 | return 0; | |
460 | ||
461 | hdev->debugfs = debugfs_create_dir(hdev->name, bt_debugfs); | |
462 | if (!hdev->debugfs) | |
463 | return 0; | |
464 | ||
465 | debugfs_create_file("inquiry_cache", 0444, hdev->debugfs, | |
466 | hdev, &inquiry_cache_fops); | |
467 | ||
1da177e4 LT |
468 | return 0; |
469 | } | |
470 | ||
471 | void hci_unregister_sysfs(struct hci_dev *hdev) | |
472 | { | |
c13854ce | 473 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 474 | |
ca325f69 MH |
475 | debugfs_remove_recursive(hdev->debugfs); |
476 | ||
4d0eb004 | 477 | device_del(&hdev->dev); |
1da177e4 LT |
478 | } |
479 | ||
480 | int __init bt_sysfs_init(void) | |
481 | { | |
ca325f69 MH |
482 | bt_debugfs = debugfs_create_dir("bluetooth", NULL); |
483 | ||
a91f2e39 | 484 | bt_class = class_create(THIS_MODULE, "bluetooth"); |
f48fd9c8 | 485 | if (IS_ERR(bt_class)) |
90855d7b | 486 | return PTR_ERR(bt_class); |
27d35284 MH |
487 | |
488 | return 0; | |
1da177e4 LT |
489 | } |
490 | ||
860e13b5 | 491 | void bt_sysfs_cleanup(void) |
1da177e4 | 492 | { |
a91f2e39 | 493 | class_destroy(bt_class); |
ca325f69 MH |
494 | |
495 | debugfs_remove_recursive(bt_debugfs); | |
1da177e4 | 496 | } |