Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* Bluetooth HCI driver model support. */ |
2 | ||
1da177e4 LT |
3 | #include <linux/kernel.h> |
4 | #include <linux/init.h> | |
ca325f69 | 5 | #include <linux/debugfs.h> |
d4612cb8 | 6 | #include <linux/seq_file.h> |
1da177e4 LT |
7 | |
8 | #include <net/bluetooth/bluetooth.h> | |
9 | #include <net/bluetooth/hci_core.h> | |
10 | ||
aef7d97c | 11 | static struct class *bt_class; |
90855d7b | 12 | |
ca325f69 MH |
13 | struct dentry *bt_debugfs = NULL; |
14 | EXPORT_SYMBOL_GPL(bt_debugfs); | |
15 | ||
a67e899c | 16 | static struct workqueue_struct *bt_workq; |
1da177e4 | 17 | |
90855d7b MH |
18 | static inline char *link_typetostr(int type) |
19 | { | |
20 | switch (type) { | |
21 | case ACL_LINK: | |
22 | return "ACL"; | |
23 | case SCO_LINK: | |
24 | return "SCO"; | |
25 | case ESCO_LINK: | |
26 | return "eSCO"; | |
27 | default: | |
28 | return "UNKNOWN"; | |
29 | } | |
30 | } | |
31 | ||
32 | static ssize_t show_link_type(struct device *dev, struct device_attribute *attr, char *buf) | |
33 | { | |
34 | struct hci_conn *conn = dev_get_drvdata(dev); | |
35 | return sprintf(buf, "%s\n", link_typetostr(conn->type)); | |
36 | } | |
37 | ||
38 | static ssize_t show_link_address(struct device *dev, struct device_attribute *attr, char *buf) | |
39 | { | |
40 | struct hci_conn *conn = dev_get_drvdata(dev); | |
41 | bdaddr_t bdaddr; | |
42 | baswap(&bdaddr, &conn->dst); | |
43 | return sprintf(buf, "%s\n", batostr(&bdaddr)); | |
44 | } | |
45 | ||
46 | static ssize_t show_link_features(struct device *dev, struct device_attribute *attr, char *buf) | |
47 | { | |
48 | struct hci_conn *conn = dev_get_drvdata(dev); | |
49 | ||
50 | return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", | |
51 | conn->features[0], conn->features[1], | |
52 | conn->features[2], conn->features[3], | |
53 | conn->features[4], conn->features[5], | |
54 | conn->features[6], conn->features[7]); | |
55 | } | |
56 | ||
57 | #define LINK_ATTR(_name,_mode,_show,_store) \ | |
58 | struct device_attribute link_attr_##_name = __ATTR(_name,_mode,_show,_store) | |
59 | ||
60 | static LINK_ATTR(type, S_IRUGO, show_link_type, NULL); | |
61 | static LINK_ATTR(address, S_IRUGO, show_link_address, NULL); | |
62 | static LINK_ATTR(features, S_IRUGO, show_link_features, NULL); | |
63 | ||
64 | static struct attribute *bt_link_attrs[] = { | |
65 | &link_attr_type.attr, | |
66 | &link_attr_address.attr, | |
67 | &link_attr_features.attr, | |
68 | NULL | |
69 | }; | |
70 | ||
71 | static struct attribute_group bt_link_group = { | |
72 | .attrs = bt_link_attrs, | |
73 | }; | |
74 | ||
a4dbd674 | 75 | static const struct attribute_group *bt_link_groups[] = { |
90855d7b MH |
76 | &bt_link_group, |
77 | NULL | |
78 | }; | |
79 | ||
80 | static void bt_link_release(struct device *dev) | |
81 | { | |
82 | void *data = dev_get_drvdata(dev); | |
83 | kfree(data); | |
84 | } | |
85 | ||
86 | static struct device_type bt_link = { | |
87 | .name = "link", | |
88 | .groups = bt_link_groups, | |
89 | .release = bt_link_release, | |
90 | }; | |
91 | ||
92 | static void add_conn(struct work_struct *work) | |
93 | { | |
f3784d83 | 94 | struct hci_conn *conn = container_of(work, struct hci_conn, work_add); |
457ca7bb | 95 | struct hci_dev *hdev = conn->hdev; |
90855d7b | 96 | |
457ca7bb MH |
97 | dev_set_name(&conn->dev, "%s:%d", hdev->name, conn->handle); |
98 | ||
f74c77cb DY |
99 | dev_set_drvdata(&conn->dev, conn); |
100 | ||
90855d7b MH |
101 | if (device_add(&conn->dev) < 0) { |
102 | BT_ERR("Failed to register connection device"); | |
103 | return; | |
104 | } | |
384943ec MH |
105 | |
106 | hci_dev_hold(hdev); | |
90855d7b MH |
107 | } |
108 | ||
90855d7b MH |
109 | /* |
110 | * The rfcomm tty device will possibly retain even when conn | |
111 | * is down, and sysfs doesn't support move zombie device, | |
112 | * so we should move the device before conn device is destroyed. | |
113 | */ | |
114 | static int __match_tty(struct device *dev, void *data) | |
115 | { | |
fb28ad35 | 116 | return !strncmp(dev_name(dev), "rfcomm", 6); |
90855d7b MH |
117 | } |
118 | ||
119 | static void del_conn(struct work_struct *work) | |
120 | { | |
f3784d83 | 121 | struct hci_conn *conn = container_of(work, struct hci_conn, work_del); |
90855d7b MH |
122 | struct hci_dev *hdev = conn->hdev; |
123 | ||
a67e899c MH |
124 | if (!device_is_registered(&conn->dev)) |
125 | return; | |
f3784d83 | 126 | |
90855d7b MH |
127 | while (1) { |
128 | struct device *dev; | |
129 | ||
130 | dev = device_find_child(&conn->dev, NULL, __match_tty); | |
131 | if (!dev) | |
132 | break; | |
ffa6a705 | 133 | device_move(dev, NULL, DPM_ORDER_DEV_LAST); |
90855d7b MH |
134 | put_device(dev); |
135 | } | |
136 | ||
137 | device_del(&conn->dev); | |
138 | put_device(&conn->dev); | |
384943ec | 139 | |
90855d7b MH |
140 | hci_dev_put(hdev); |
141 | } | |
142 | ||
a67e899c | 143 | void hci_conn_init_sysfs(struct hci_conn *conn) |
90855d7b | 144 | { |
a67e899c MH |
145 | struct hci_dev *hdev = conn->hdev; |
146 | ||
90855d7b MH |
147 | BT_DBG("conn %p", conn); |
148 | ||
a67e899c MH |
149 | conn->dev.type = &bt_link; |
150 | conn->dev.class = bt_class; | |
151 | conn->dev.parent = &hdev->dev; | |
152 | ||
a67e899c MH |
153 | device_initialize(&conn->dev); |
154 | ||
155 | INIT_WORK(&conn->work_add, add_conn); | |
f3784d83 | 156 | INIT_WORK(&conn->work_del, del_conn); |
a67e899c MH |
157 | } |
158 | ||
159 | void hci_conn_add_sysfs(struct hci_conn *conn) | |
160 | { | |
a67e899c MH |
161 | BT_DBG("conn %p", conn); |
162 | ||
a67e899c MH |
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 | ||
c13854ce | 173 | static inline char *host_bustostr(int bus) |
1da177e4 | 174 | { |
c13854ce | 175 | switch (bus) { |
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 | ||
943da25d MH |
195 | static inline char *host_typetostr(int type) |
196 | { | |
197 | switch (type) { | |
198 | case HCI_BREDR: | |
199 | return "BR/EDR"; | |
200 | case HCI_80211: | |
201 | return "802.11"; | |
202 | default: | |
203 | return "UNKNOWN"; | |
204 | } | |
205 | } | |
206 | ||
c13854ce | 207 | static ssize_t show_bus(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 | 208 | { |
a91f2e39 | 209 | struct hci_dev *hdev = dev_get_drvdata(dev); |
c13854ce | 210 | return sprintf(buf, "%s\n", host_bustostr(hdev->bus)); |
1da177e4 LT |
211 | } |
212 | ||
943da25d MH |
213 | static ssize_t show_type(struct device *dev, struct device_attribute *attr, char *buf) |
214 | { | |
215 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
216 | return sprintf(buf, "%s\n", host_typetostr(hdev->dev_type)); | |
217 | } | |
218 | ||
a9de9248 MH |
219 | static ssize_t show_name(struct device *dev, struct device_attribute *attr, char *buf) |
220 | { | |
221 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
222 | char name[249]; | |
223 | int i; | |
224 | ||
225 | for (i = 0; i < 248; i++) | |
226 | name[i] = hdev->dev_name[i]; | |
227 | ||
228 | name[248] = '\0'; | |
229 | return sprintf(buf, "%s\n", name); | |
230 | } | |
231 | ||
232 | static ssize_t show_class(struct device *dev, struct device_attribute *attr, char *buf) | |
233 | { | |
234 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
235 | return sprintf(buf, "0x%.2x%.2x%.2x\n", | |
236 | hdev->dev_class[2], hdev->dev_class[1], hdev->dev_class[0]); | |
237 | } | |
238 | ||
a91f2e39 | 239 | static ssize_t show_address(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 | 240 | { |
a91f2e39 | 241 | struct hci_dev *hdev = dev_get_drvdata(dev); |
1da177e4 LT |
242 | bdaddr_t bdaddr; |
243 | baswap(&bdaddr, &hdev->bdaddr); | |
244 | return sprintf(buf, "%s\n", batostr(&bdaddr)); | |
245 | } | |
246 | ||
a9de9248 MH |
247 | static ssize_t show_features(struct device *dev, struct device_attribute *attr, char *buf) |
248 | { | |
249 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
250 | ||
251 | return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", | |
252 | hdev->features[0], hdev->features[1], | |
253 | hdev->features[2], hdev->features[3], | |
254 | hdev->features[4], hdev->features[5], | |
255 | hdev->features[6], hdev->features[7]); | |
256 | } | |
257 | ||
1143e5a6 MH |
258 | static ssize_t show_manufacturer(struct device *dev, struct device_attribute *attr, char *buf) |
259 | { | |
260 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
261 | return sprintf(buf, "%d\n", hdev->manufacturer); | |
262 | } | |
263 | ||
264 | static ssize_t show_hci_version(struct device *dev, struct device_attribute *attr, char *buf) | |
265 | { | |
266 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
267 | return sprintf(buf, "%d\n", hdev->hci_ver); | |
268 | } | |
269 | ||
270 | static ssize_t show_hci_revision(struct device *dev, struct device_attribute *attr, char *buf) | |
271 | { | |
272 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
273 | return sprintf(buf, "%d\n", hdev->hci_rev); | |
274 | } | |
275 | ||
a91f2e39 | 276 | static ssize_t show_idle_timeout(struct device *dev, struct device_attribute *attr, char *buf) |
04837f64 | 277 | { |
a91f2e39 | 278 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
279 | return sprintf(buf, "%d\n", hdev->idle_timeout); |
280 | } | |
281 | ||
a91f2e39 | 282 | static ssize_t store_idle_timeout(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
04837f64 | 283 | { |
a91f2e39 | 284 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
285 | char *ptr; |
286 | __u32 val; | |
287 | ||
288 | val = simple_strtoul(buf, &ptr, 10); | |
289 | if (ptr == buf) | |
290 | return -EINVAL; | |
291 | ||
292 | if (val != 0 && (val < 500 || val > 3600000)) | |
293 | return -EINVAL; | |
294 | ||
295 | hdev->idle_timeout = val; | |
296 | ||
297 | return count; | |
298 | } | |
299 | ||
a91f2e39 | 300 | static ssize_t show_sniff_max_interval(struct device *dev, struct device_attribute *attr, char *buf) |
04837f64 | 301 | { |
a91f2e39 | 302 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
303 | return sprintf(buf, "%d\n", hdev->sniff_max_interval); |
304 | } | |
305 | ||
a91f2e39 | 306 | static ssize_t store_sniff_max_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
04837f64 | 307 | { |
a91f2e39 | 308 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
309 | char *ptr; |
310 | __u16 val; | |
311 | ||
312 | val = simple_strtoul(buf, &ptr, 10); | |
313 | if (ptr == buf) | |
314 | return -EINVAL; | |
315 | ||
316 | if (val < 0x0002 || val > 0xFFFE || val % 2) | |
317 | return -EINVAL; | |
318 | ||
319 | if (val < hdev->sniff_min_interval) | |
320 | return -EINVAL; | |
321 | ||
322 | hdev->sniff_max_interval = val; | |
323 | ||
324 | return count; | |
325 | } | |
326 | ||
a91f2e39 | 327 | static ssize_t show_sniff_min_interval(struct device *dev, struct device_attribute *attr, char *buf) |
04837f64 | 328 | { |
a91f2e39 | 329 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
330 | return sprintf(buf, "%d\n", hdev->sniff_min_interval); |
331 | } | |
332 | ||
a91f2e39 | 333 | static ssize_t store_sniff_min_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
04837f64 | 334 | { |
a91f2e39 | 335 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
336 | char *ptr; |
337 | __u16 val; | |
338 | ||
339 | val = simple_strtoul(buf, &ptr, 10); | |
340 | if (ptr == buf) | |
341 | return -EINVAL; | |
342 | ||
343 | if (val < 0x0002 || val > 0xFFFE || val % 2) | |
344 | return -EINVAL; | |
345 | ||
346 | if (val > hdev->sniff_max_interval) | |
347 | return -EINVAL; | |
348 | ||
349 | hdev->sniff_min_interval = val; | |
350 | ||
351 | return count; | |
352 | } | |
353 | ||
c13854ce | 354 | static DEVICE_ATTR(bus, S_IRUGO, show_bus, NULL); |
943da25d | 355 | static DEVICE_ATTR(type, S_IRUGO, show_type, NULL); |
a9de9248 MH |
356 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); |
357 | static DEVICE_ATTR(class, S_IRUGO, show_class, NULL); | |
a91f2e39 | 358 | static DEVICE_ATTR(address, S_IRUGO, show_address, NULL); |
a9de9248 | 359 | static DEVICE_ATTR(features, S_IRUGO, show_features, NULL); |
1143e5a6 MH |
360 | static DEVICE_ATTR(manufacturer, S_IRUGO, show_manufacturer, NULL); |
361 | static DEVICE_ATTR(hci_version, S_IRUGO, show_hci_version, NULL); | |
362 | static DEVICE_ATTR(hci_revision, S_IRUGO, show_hci_revision, NULL); | |
1da177e4 | 363 | |
a91f2e39 | 364 | static DEVICE_ATTR(idle_timeout, S_IRUGO | S_IWUSR, |
04837f64 | 365 | show_idle_timeout, store_idle_timeout); |
a91f2e39 | 366 | static DEVICE_ATTR(sniff_max_interval, S_IRUGO | S_IWUSR, |
04837f64 | 367 | show_sniff_max_interval, store_sniff_max_interval); |
a91f2e39 | 368 | static DEVICE_ATTR(sniff_min_interval, S_IRUGO | S_IWUSR, |
04837f64 MH |
369 | show_sniff_min_interval, store_sniff_min_interval); |
370 | ||
90855d7b | 371 | static struct attribute *bt_host_attrs[] = { |
c13854ce | 372 | &dev_attr_bus.attr, |
943da25d | 373 | &dev_attr_type.attr, |
90855d7b MH |
374 | &dev_attr_name.attr, |
375 | &dev_attr_class.attr, | |
376 | &dev_attr_address.attr, | |
377 | &dev_attr_features.attr, | |
378 | &dev_attr_manufacturer.attr, | |
379 | &dev_attr_hci_version.attr, | |
380 | &dev_attr_hci_revision.attr, | |
90855d7b MH |
381 | &dev_attr_idle_timeout.attr, |
382 | &dev_attr_sniff_max_interval.attr, | |
383 | &dev_attr_sniff_min_interval.attr, | |
1da177e4 LT |
384 | NULL |
385 | }; | |
386 | ||
90855d7b MH |
387 | static struct attribute_group bt_host_group = { |
388 | .attrs = bt_host_attrs, | |
b219e3ac MH |
389 | }; |
390 | ||
a4dbd674 | 391 | static const struct attribute_group *bt_host_groups[] = { |
90855d7b MH |
392 | &bt_host_group, |
393 | NULL | |
27d35284 MH |
394 | }; |
395 | ||
90855d7b | 396 | static void bt_host_release(struct device *dev) |
a91f2e39 | 397 | { |
b219e3ac MH |
398 | void *data = dev_get_drvdata(dev); |
399 | kfree(data); | |
400 | } | |
401 | ||
90855d7b MH |
402 | static struct device_type bt_host = { |
403 | .name = "host", | |
404 | .groups = bt_host_groups, | |
405 | .release = bt_host_release, | |
406 | }; | |
a91f2e39 | 407 | |
d4612cb8 | 408 | static int inquiry_cache_show(struct seq_file *f, void *p) |
ca325f69 | 409 | { |
d4612cb8 | 410 | struct hci_dev *hdev = f->private; |
ca325f69 MH |
411 | struct inquiry_cache *cache = &hdev->inq_cache; |
412 | struct inquiry_entry *e; | |
ca325f69 MH |
413 | |
414 | hci_dev_lock_bh(hdev); | |
415 | ||
416 | for (e = cache->list; e; e = e->next) { | |
417 | struct inquiry_data *data = &e->data; | |
418 | bdaddr_t bdaddr; | |
419 | baswap(&bdaddr, &data->bdaddr); | |
d4612cb8 MH |
420 | seq_printf(f, "%s %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n", |
421 | batostr(&bdaddr), | |
422 | data->pscan_rep_mode, data->pscan_period_mode, | |
423 | data->pscan_mode, data->dev_class[2], | |
424 | data->dev_class[1], data->dev_class[0], | |
425 | __le16_to_cpu(data->clock_offset), | |
426 | data->rssi, data->ssp_mode, e->timestamp); | |
ca325f69 MH |
427 | } |
428 | ||
429 | hci_dev_unlock_bh(hdev); | |
430 | ||
d4612cb8 MH |
431 | return 0; |
432 | } | |
433 | ||
434 | static int inquiry_cache_open(struct inode *inode, struct file *file) | |
435 | { | |
436 | return single_open(file, inquiry_cache_show, inode->i_private); | |
ca325f69 MH |
437 | } |
438 | ||
439 | static const struct file_operations inquiry_cache_fops = { | |
d4612cb8 MH |
440 | .open = inquiry_cache_open, |
441 | .read = seq_read, | |
442 | .llseek = seq_lseek, | |
443 | .release = single_release, | |
ca325f69 MH |
444 | }; |
445 | ||
1da177e4 LT |
446 | int hci_register_sysfs(struct hci_dev *hdev) |
447 | { | |
a91f2e39 | 448 | struct device *dev = &hdev->dev; |
1da177e4 LT |
449 | int err; |
450 | ||
c13854ce | 451 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 452 | |
90855d7b MH |
453 | dev->type = &bt_host; |
454 | dev->class = bt_class; | |
e9c4bec6 | 455 | dev->parent = hdev->parent; |
a91f2e39 | 456 | |
2e792995 | 457 | dev_set_name(dev, "%s", hdev->name); |
1da177e4 | 458 | |
a91f2e39 | 459 | dev_set_drvdata(dev, hdev); |
27d35284 | 460 | |
a91f2e39 | 461 | err = device_register(dev); |
1da177e4 LT |
462 | if (err < 0) |
463 | return err; | |
464 | ||
ca325f69 MH |
465 | if (!bt_debugfs) |
466 | return 0; | |
467 | ||
468 | hdev->debugfs = debugfs_create_dir(hdev->name, bt_debugfs); | |
469 | if (!hdev->debugfs) | |
470 | return 0; | |
471 | ||
472 | debugfs_create_file("inquiry_cache", 0444, hdev->debugfs, | |
473 | hdev, &inquiry_cache_fops); | |
474 | ||
1da177e4 LT |
475 | return 0; |
476 | } | |
477 | ||
478 | void hci_unregister_sysfs(struct hci_dev *hdev) | |
479 | { | |
c13854ce | 480 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 481 | |
ca325f69 MH |
482 | debugfs_remove_recursive(hdev->debugfs); |
483 | ||
4d0eb004 | 484 | device_del(&hdev->dev); |
1da177e4 LT |
485 | } |
486 | ||
487 | int __init bt_sysfs_init(void) | |
488 | { | |
a67e899c MH |
489 | bt_workq = create_singlethread_workqueue("bluetooth"); |
490 | if (!bt_workq) | |
90855d7b | 491 | return -ENOMEM; |
27d35284 | 492 | |
ca325f69 MH |
493 | bt_debugfs = debugfs_create_dir("bluetooth", NULL); |
494 | ||
a91f2e39 MH |
495 | bt_class = class_create(THIS_MODULE, "bluetooth"); |
496 | if (IS_ERR(bt_class)) { | |
a67e899c | 497 | destroy_workqueue(bt_workq); |
90855d7b | 498 | return PTR_ERR(bt_class); |
27d35284 MH |
499 | } |
500 | ||
501 | return 0; | |
1da177e4 LT |
502 | } |
503 | ||
860e13b5 | 504 | void bt_sysfs_cleanup(void) |
1da177e4 | 505 | { |
a91f2e39 | 506 | class_destroy(bt_class); |
ca325f69 MH |
507 | |
508 | debugfs_remove_recursive(bt_debugfs); | |
509 | ||
510 | destroy_workqueue(bt_workq); | |
1da177e4 | 511 | } |