]>
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 | ||
a67e899c | 17 | static struct workqueue_struct *bt_workq; |
1da177e4 | 18 | |
90855d7b MH |
19 | static inline char *link_typetostr(int type) |
20 | { | |
21 | switch (type) { | |
22 | case ACL_LINK: | |
23 | return "ACL"; | |
24 | case SCO_LINK: | |
25 | return "SCO"; | |
26 | case ESCO_LINK: | |
27 | return "eSCO"; | |
28 | default: | |
29 | return "UNKNOWN"; | |
30 | } | |
31 | } | |
32 | ||
33 | static ssize_t show_link_type(struct device *dev, struct device_attribute *attr, char *buf) | |
34 | { | |
35 | struct hci_conn *conn = dev_get_drvdata(dev); | |
36 | return sprintf(buf, "%s\n", link_typetostr(conn->type)); | |
37 | } | |
38 | ||
39 | static ssize_t show_link_address(struct device *dev, struct device_attribute *attr, char *buf) | |
40 | { | |
41 | struct hci_conn *conn = dev_get_drvdata(dev); | |
42 | bdaddr_t bdaddr; | |
43 | baswap(&bdaddr, &conn->dst); | |
44 | return sprintf(buf, "%s\n", batostr(&bdaddr)); | |
45 | } | |
46 | ||
47 | static ssize_t show_link_features(struct device *dev, struct device_attribute *attr, char *buf) | |
48 | { | |
49 | struct hci_conn *conn = dev_get_drvdata(dev); | |
50 | ||
51 | return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", | |
52 | conn->features[0], conn->features[1], | |
53 | conn->features[2], conn->features[3], | |
54 | conn->features[4], conn->features[5], | |
55 | conn->features[6], conn->features[7]); | |
56 | } | |
57 | ||
58 | #define LINK_ATTR(_name,_mode,_show,_store) \ | |
59 | struct device_attribute link_attr_##_name = __ATTR(_name,_mode,_show,_store) | |
60 | ||
61 | static LINK_ATTR(type, S_IRUGO, show_link_type, NULL); | |
62 | static LINK_ATTR(address, S_IRUGO, show_link_address, NULL); | |
63 | static LINK_ATTR(features, S_IRUGO, show_link_features, NULL); | |
64 | ||
65 | static struct attribute *bt_link_attrs[] = { | |
66 | &link_attr_type.attr, | |
67 | &link_attr_address.attr, | |
68 | &link_attr_features.attr, | |
69 | NULL | |
70 | }; | |
71 | ||
72 | static struct attribute_group bt_link_group = { | |
73 | .attrs = bt_link_attrs, | |
74 | }; | |
75 | ||
a4dbd674 | 76 | static const struct attribute_group *bt_link_groups[] = { |
90855d7b MH |
77 | &bt_link_group, |
78 | NULL | |
79 | }; | |
80 | ||
81 | static void bt_link_release(struct device *dev) | |
82 | { | |
83 | void *data = dev_get_drvdata(dev); | |
84 | kfree(data); | |
85 | } | |
86 | ||
87 | static struct device_type bt_link = { | |
88 | .name = "link", | |
89 | .groups = bt_link_groups, | |
90 | .release = bt_link_release, | |
91 | }; | |
92 | ||
93 | static void add_conn(struct work_struct *work) | |
94 | { | |
f3784d83 | 95 | struct hci_conn *conn = container_of(work, struct hci_conn, work_add); |
457ca7bb | 96 | struct hci_dev *hdev = conn->hdev; |
90855d7b | 97 | |
457ca7bb MH |
98 | dev_set_name(&conn->dev, "%s:%d", hdev->name, conn->handle); |
99 | ||
f74c77cb DY |
100 | dev_set_drvdata(&conn->dev, conn); |
101 | ||
90855d7b MH |
102 | if (device_add(&conn->dev) < 0) { |
103 | BT_ERR("Failed to register connection device"); | |
104 | return; | |
105 | } | |
384943ec MH |
106 | |
107 | hci_dev_hold(hdev); | |
90855d7b MH |
108 | } |
109 | ||
90855d7b MH |
110 | /* |
111 | * The rfcomm tty device will possibly retain even when conn | |
112 | * is down, and sysfs doesn't support move zombie device, | |
113 | * so we should move the device before conn device is destroyed. | |
114 | */ | |
115 | static int __match_tty(struct device *dev, void *data) | |
116 | { | |
fb28ad35 | 117 | return !strncmp(dev_name(dev), "rfcomm", 6); |
90855d7b MH |
118 | } |
119 | ||
120 | static void del_conn(struct work_struct *work) | |
121 | { | |
f3784d83 | 122 | struct hci_conn *conn = container_of(work, struct hci_conn, work_del); |
90855d7b MH |
123 | struct hci_dev *hdev = conn->hdev; |
124 | ||
a67e899c MH |
125 | if (!device_is_registered(&conn->dev)) |
126 | return; | |
f3784d83 | 127 | |
90855d7b MH |
128 | while (1) { |
129 | struct device *dev; | |
130 | ||
131 | dev = device_find_child(&conn->dev, NULL, __match_tty); | |
132 | if (!dev) | |
133 | break; | |
ffa6a705 | 134 | device_move(dev, NULL, DPM_ORDER_DEV_LAST); |
90855d7b MH |
135 | put_device(dev); |
136 | } | |
137 | ||
138 | device_del(&conn->dev); | |
139 | put_device(&conn->dev); | |
384943ec | 140 | |
90855d7b MH |
141 | hci_dev_put(hdev); |
142 | } | |
143 | ||
a67e899c | 144 | void hci_conn_init_sysfs(struct hci_conn *conn) |
90855d7b | 145 | { |
a67e899c MH |
146 | struct hci_dev *hdev = conn->hdev; |
147 | ||
90855d7b MH |
148 | BT_DBG("conn %p", conn); |
149 | ||
a67e899c MH |
150 | conn->dev.type = &bt_link; |
151 | conn->dev.class = bt_class; | |
152 | conn->dev.parent = &hdev->dev; | |
153 | ||
a67e899c MH |
154 | device_initialize(&conn->dev); |
155 | ||
156 | INIT_WORK(&conn->work_add, add_conn); | |
f3784d83 | 157 | INIT_WORK(&conn->work_del, del_conn); |
a67e899c MH |
158 | } |
159 | ||
160 | void hci_conn_add_sysfs(struct hci_conn *conn) | |
161 | { | |
a67e899c MH |
162 | BT_DBG("conn %p", conn); |
163 | ||
a67e899c MH |
164 | queue_work(bt_workq, &conn->work_add); |
165 | } | |
166 | ||
167 | void hci_conn_del_sysfs(struct hci_conn *conn) | |
168 | { | |
169 | BT_DBG("conn %p", conn); | |
90855d7b | 170 | |
a67e899c | 171 | queue_work(bt_workq, &conn->work_del); |
90855d7b MH |
172 | } |
173 | ||
c13854ce | 174 | static inline char *host_bustostr(int bus) |
1da177e4 | 175 | { |
c13854ce | 176 | switch (bus) { |
0ac53939 | 177 | case HCI_VIRTUAL: |
4d0eb004 MH |
178 | return "VIRTUAL"; |
179 | case HCI_USB: | |
180 | return "USB"; | |
181 | case HCI_PCCARD: | |
182 | return "PCCARD"; | |
183 | case HCI_UART: | |
184 | return "UART"; | |
185 | case HCI_RS232: | |
186 | return "RS232"; | |
187 | case HCI_PCI: | |
188 | return "PCI"; | |
0ac53939 MH |
189 | case HCI_SDIO: |
190 | return "SDIO"; | |
4d0eb004 MH |
191 | default: |
192 | return "UNKNOWN"; | |
193 | } | |
1da177e4 LT |
194 | } |
195 | ||
943da25d MH |
196 | static inline char *host_typetostr(int type) |
197 | { | |
198 | switch (type) { | |
199 | case HCI_BREDR: | |
200 | return "BR/EDR"; | |
201 | case HCI_80211: | |
202 | return "802.11"; | |
203 | default: | |
204 | return "UNKNOWN"; | |
205 | } | |
206 | } | |
207 | ||
c13854ce | 208 | static ssize_t show_bus(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 | 209 | { |
a91f2e39 | 210 | struct hci_dev *hdev = dev_get_drvdata(dev); |
c13854ce | 211 | return sprintf(buf, "%s\n", host_bustostr(hdev->bus)); |
1da177e4 LT |
212 | } |
213 | ||
943da25d MH |
214 | static ssize_t show_type(struct device *dev, struct device_attribute *attr, char *buf) |
215 | { | |
216 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
217 | return sprintf(buf, "%s\n", host_typetostr(hdev->dev_type)); | |
218 | } | |
219 | ||
a9de9248 MH |
220 | static ssize_t show_name(struct device *dev, struct device_attribute *attr, char *buf) |
221 | { | |
222 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
223 | char name[249]; | |
224 | int i; | |
225 | ||
226 | for (i = 0; i < 248; i++) | |
227 | name[i] = hdev->dev_name[i]; | |
228 | ||
229 | name[248] = '\0'; | |
230 | return sprintf(buf, "%s\n", name); | |
231 | } | |
232 | ||
233 | static ssize_t show_class(struct device *dev, struct device_attribute *attr, char *buf) | |
234 | { | |
235 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
236 | return sprintf(buf, "0x%.2x%.2x%.2x\n", | |
237 | hdev->dev_class[2], hdev->dev_class[1], hdev->dev_class[0]); | |
238 | } | |
239 | ||
a91f2e39 | 240 | static ssize_t show_address(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 | 241 | { |
a91f2e39 | 242 | struct hci_dev *hdev = dev_get_drvdata(dev); |
1da177e4 LT |
243 | bdaddr_t bdaddr; |
244 | baswap(&bdaddr, &hdev->bdaddr); | |
245 | return sprintf(buf, "%s\n", batostr(&bdaddr)); | |
246 | } | |
247 | ||
a9de9248 MH |
248 | static ssize_t show_features(struct device *dev, struct device_attribute *attr, char *buf) |
249 | { | |
250 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
251 | ||
252 | return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", | |
253 | hdev->features[0], hdev->features[1], | |
254 | hdev->features[2], hdev->features[3], | |
255 | hdev->features[4], hdev->features[5], | |
256 | hdev->features[6], hdev->features[7]); | |
257 | } | |
258 | ||
1143e5a6 MH |
259 | static ssize_t show_manufacturer(struct device *dev, struct device_attribute *attr, char *buf) |
260 | { | |
261 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
262 | return sprintf(buf, "%d\n", hdev->manufacturer); | |
263 | } | |
264 | ||
265 | static ssize_t show_hci_version(struct device *dev, struct device_attribute *attr, char *buf) | |
266 | { | |
267 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
268 | return sprintf(buf, "%d\n", hdev->hci_ver); | |
269 | } | |
270 | ||
271 | static ssize_t show_hci_revision(struct device *dev, struct device_attribute *attr, char *buf) | |
272 | { | |
273 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
274 | return sprintf(buf, "%d\n", hdev->hci_rev); | |
275 | } | |
276 | ||
a91f2e39 | 277 | static ssize_t show_idle_timeout(struct device *dev, struct device_attribute *attr, char *buf) |
04837f64 | 278 | { |
a91f2e39 | 279 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
280 | return sprintf(buf, "%d\n", hdev->idle_timeout); |
281 | } | |
282 | ||
a91f2e39 | 283 | static ssize_t store_idle_timeout(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
04837f64 | 284 | { |
a91f2e39 | 285 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
286 | char *ptr; |
287 | __u32 val; | |
288 | ||
289 | val = simple_strtoul(buf, &ptr, 10); | |
290 | if (ptr == buf) | |
291 | return -EINVAL; | |
292 | ||
293 | if (val != 0 && (val < 500 || val > 3600000)) | |
294 | return -EINVAL; | |
295 | ||
296 | hdev->idle_timeout = val; | |
297 | ||
298 | return count; | |
299 | } | |
300 | ||
a91f2e39 | 301 | static ssize_t show_sniff_max_interval(struct device *dev, struct device_attribute *attr, char *buf) |
04837f64 | 302 | { |
a91f2e39 | 303 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
304 | return sprintf(buf, "%d\n", hdev->sniff_max_interval); |
305 | } | |
306 | ||
a91f2e39 | 307 | static ssize_t store_sniff_max_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
04837f64 | 308 | { |
a91f2e39 | 309 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
310 | char *ptr; |
311 | __u16 val; | |
312 | ||
313 | val = simple_strtoul(buf, &ptr, 10); | |
314 | if (ptr == buf) | |
315 | return -EINVAL; | |
316 | ||
317 | if (val < 0x0002 || val > 0xFFFE || val % 2) | |
318 | return -EINVAL; | |
319 | ||
320 | if (val < hdev->sniff_min_interval) | |
321 | return -EINVAL; | |
322 | ||
323 | hdev->sniff_max_interval = val; | |
324 | ||
325 | return count; | |
326 | } | |
327 | ||
a91f2e39 | 328 | static ssize_t show_sniff_min_interval(struct device *dev, struct device_attribute *attr, char *buf) |
04837f64 | 329 | { |
a91f2e39 | 330 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
331 | return sprintf(buf, "%d\n", hdev->sniff_min_interval); |
332 | } | |
333 | ||
a91f2e39 | 334 | static ssize_t store_sniff_min_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
04837f64 | 335 | { |
a91f2e39 | 336 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
337 | char *ptr; |
338 | __u16 val; | |
339 | ||
340 | val = simple_strtoul(buf, &ptr, 10); | |
341 | if (ptr == buf) | |
342 | return -EINVAL; | |
343 | ||
344 | if (val < 0x0002 || val > 0xFFFE || val % 2) | |
345 | return -EINVAL; | |
346 | ||
347 | if (val > hdev->sniff_max_interval) | |
348 | return -EINVAL; | |
349 | ||
350 | hdev->sniff_min_interval = val; | |
351 | ||
352 | return count; | |
353 | } | |
354 | ||
c13854ce | 355 | static DEVICE_ATTR(bus, S_IRUGO, show_bus, NULL); |
943da25d | 356 | static DEVICE_ATTR(type, S_IRUGO, show_type, NULL); |
a9de9248 MH |
357 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); |
358 | static DEVICE_ATTR(class, S_IRUGO, show_class, NULL); | |
a91f2e39 | 359 | static DEVICE_ATTR(address, S_IRUGO, show_address, NULL); |
a9de9248 | 360 | static DEVICE_ATTR(features, S_IRUGO, show_features, NULL); |
1143e5a6 MH |
361 | static DEVICE_ATTR(manufacturer, S_IRUGO, show_manufacturer, NULL); |
362 | static DEVICE_ATTR(hci_version, S_IRUGO, show_hci_version, NULL); | |
363 | static DEVICE_ATTR(hci_revision, S_IRUGO, show_hci_revision, NULL); | |
1da177e4 | 364 | |
a91f2e39 | 365 | static DEVICE_ATTR(idle_timeout, S_IRUGO | S_IWUSR, |
04837f64 | 366 | show_idle_timeout, store_idle_timeout); |
a91f2e39 | 367 | static DEVICE_ATTR(sniff_max_interval, S_IRUGO | S_IWUSR, |
04837f64 | 368 | show_sniff_max_interval, store_sniff_max_interval); |
a91f2e39 | 369 | static DEVICE_ATTR(sniff_min_interval, S_IRUGO | S_IWUSR, |
04837f64 MH |
370 | show_sniff_min_interval, store_sniff_min_interval); |
371 | ||
90855d7b | 372 | static struct attribute *bt_host_attrs[] = { |
c13854ce | 373 | &dev_attr_bus.attr, |
943da25d | 374 | &dev_attr_type.attr, |
90855d7b MH |
375 | &dev_attr_name.attr, |
376 | &dev_attr_class.attr, | |
377 | &dev_attr_address.attr, | |
378 | &dev_attr_features.attr, | |
379 | &dev_attr_manufacturer.attr, | |
380 | &dev_attr_hci_version.attr, | |
381 | &dev_attr_hci_revision.attr, | |
90855d7b MH |
382 | &dev_attr_idle_timeout.attr, |
383 | &dev_attr_sniff_max_interval.attr, | |
384 | &dev_attr_sniff_min_interval.attr, | |
1da177e4 LT |
385 | NULL |
386 | }; | |
387 | ||
90855d7b MH |
388 | static struct attribute_group bt_host_group = { |
389 | .attrs = bt_host_attrs, | |
b219e3ac MH |
390 | }; |
391 | ||
a4dbd674 | 392 | static const struct attribute_group *bt_host_groups[] = { |
90855d7b MH |
393 | &bt_host_group, |
394 | NULL | |
27d35284 MH |
395 | }; |
396 | ||
90855d7b | 397 | static void bt_host_release(struct device *dev) |
a91f2e39 | 398 | { |
b219e3ac MH |
399 | void *data = dev_get_drvdata(dev); |
400 | kfree(data); | |
401 | } | |
402 | ||
90855d7b MH |
403 | static struct device_type bt_host = { |
404 | .name = "host", | |
405 | .groups = bt_host_groups, | |
406 | .release = bt_host_release, | |
407 | }; | |
a91f2e39 | 408 | |
d4612cb8 | 409 | static int inquiry_cache_show(struct seq_file *f, void *p) |
ca325f69 | 410 | { |
d4612cb8 | 411 | struct hci_dev *hdev = f->private; |
ca325f69 MH |
412 | struct inquiry_cache *cache = &hdev->inq_cache; |
413 | struct inquiry_entry *e; | |
ca325f69 MH |
414 | |
415 | hci_dev_lock_bh(hdev); | |
416 | ||
417 | for (e = cache->list; e; e = e->next) { | |
418 | struct inquiry_data *data = &e->data; | |
419 | bdaddr_t bdaddr; | |
420 | baswap(&bdaddr, &data->bdaddr); | |
d4612cb8 MH |
421 | seq_printf(f, "%s %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n", |
422 | batostr(&bdaddr), | |
423 | data->pscan_rep_mode, data->pscan_period_mode, | |
424 | data->pscan_mode, data->dev_class[2], | |
425 | data->dev_class[1], data->dev_class[0], | |
426 | __le16_to_cpu(data->clock_offset), | |
427 | data->rssi, data->ssp_mode, e->timestamp); | |
ca325f69 MH |
428 | } |
429 | ||
430 | hci_dev_unlock_bh(hdev); | |
431 | ||
d4612cb8 MH |
432 | return 0; |
433 | } | |
434 | ||
435 | static int inquiry_cache_open(struct inode *inode, struct file *file) | |
436 | { | |
437 | return single_open(file, inquiry_cache_show, inode->i_private); | |
ca325f69 MH |
438 | } |
439 | ||
440 | static const struct file_operations inquiry_cache_fops = { | |
d4612cb8 MH |
441 | .open = inquiry_cache_open, |
442 | .read = seq_read, | |
443 | .llseek = seq_lseek, | |
444 | .release = single_release, | |
ca325f69 MH |
445 | }; |
446 | ||
1da177e4 LT |
447 | int hci_register_sysfs(struct hci_dev *hdev) |
448 | { | |
a91f2e39 | 449 | struct device *dev = &hdev->dev; |
1da177e4 LT |
450 | int err; |
451 | ||
c13854ce | 452 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 453 | |
90855d7b MH |
454 | dev->type = &bt_host; |
455 | dev->class = bt_class; | |
e9c4bec6 | 456 | dev->parent = hdev->parent; |
a91f2e39 | 457 | |
2e792995 | 458 | dev_set_name(dev, "%s", hdev->name); |
1da177e4 | 459 | |
a91f2e39 | 460 | dev_set_drvdata(dev, hdev); |
27d35284 | 461 | |
a91f2e39 | 462 | err = device_register(dev); |
1da177e4 LT |
463 | if (err < 0) |
464 | return err; | |
465 | ||
ca325f69 MH |
466 | if (!bt_debugfs) |
467 | return 0; | |
468 | ||
469 | hdev->debugfs = debugfs_create_dir(hdev->name, bt_debugfs); | |
470 | if (!hdev->debugfs) | |
471 | return 0; | |
472 | ||
473 | debugfs_create_file("inquiry_cache", 0444, hdev->debugfs, | |
474 | hdev, &inquiry_cache_fops); | |
475 | ||
1da177e4 LT |
476 | return 0; |
477 | } | |
478 | ||
479 | void hci_unregister_sysfs(struct hci_dev *hdev) | |
480 | { | |
c13854ce | 481 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 482 | |
ca325f69 MH |
483 | debugfs_remove_recursive(hdev->debugfs); |
484 | ||
4d0eb004 | 485 | device_del(&hdev->dev); |
1da177e4 LT |
486 | } |
487 | ||
488 | int __init bt_sysfs_init(void) | |
489 | { | |
a67e899c MH |
490 | bt_workq = create_singlethread_workqueue("bluetooth"); |
491 | if (!bt_workq) | |
90855d7b | 492 | return -ENOMEM; |
27d35284 | 493 | |
ca325f69 MH |
494 | bt_debugfs = debugfs_create_dir("bluetooth", NULL); |
495 | ||
a91f2e39 MH |
496 | bt_class = class_create(THIS_MODULE, "bluetooth"); |
497 | if (IS_ERR(bt_class)) { | |
a67e899c | 498 | destroy_workqueue(bt_workq); |
90855d7b | 499 | return PTR_ERR(bt_class); |
27d35284 MH |
500 | } |
501 | ||
502 | return 0; | |
1da177e4 LT |
503 | } |
504 | ||
860e13b5 | 505 | void bt_sysfs_cleanup(void) |
1da177e4 | 506 | { |
a91f2e39 | 507 | class_destroy(bt_class); |
ca325f69 MH |
508 | |
509 | debugfs_remove_recursive(bt_debugfs); | |
510 | ||
511 | destroy_workqueue(bt_workq); | |
1da177e4 | 512 | } |