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 | ||
27d35284 MH |
6 | #include <linux/platform_device.h> |
7 | ||
1da177e4 LT |
8 | #include <net/bluetooth/bluetooth.h> |
9 | #include <net/bluetooth/hci_core.h> | |
10 | ||
11 | #ifndef CONFIG_BT_HCI_CORE_DEBUG | |
12 | #undef BT_DBG | |
13 | #define BT_DBG(D...) | |
14 | #endif | |
b6c06321 DY |
15 | static struct workqueue_struct *btaddconn; |
16 | static struct workqueue_struct *btdelconn; | |
1da177e4 | 17 | |
4d0eb004 | 18 | static inline char *typetostr(int type) |
1da177e4 | 19 | { |
4d0eb004 | 20 | switch (type) { |
0ac53939 | 21 | case HCI_VIRTUAL: |
4d0eb004 MH |
22 | return "VIRTUAL"; |
23 | case HCI_USB: | |
24 | return "USB"; | |
25 | case HCI_PCCARD: | |
26 | return "PCCARD"; | |
27 | case HCI_UART: | |
28 | return "UART"; | |
29 | case HCI_RS232: | |
30 | return "RS232"; | |
31 | case HCI_PCI: | |
32 | return "PCI"; | |
0ac53939 MH |
33 | case HCI_SDIO: |
34 | return "SDIO"; | |
4d0eb004 MH |
35 | default: |
36 | return "UNKNOWN"; | |
37 | } | |
1da177e4 LT |
38 | } |
39 | ||
a91f2e39 | 40 | static ssize_t show_type(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 | 41 | { |
a91f2e39 | 42 | struct hci_dev *hdev = dev_get_drvdata(dev); |
4d0eb004 | 43 | return sprintf(buf, "%s\n", typetostr(hdev->type)); |
1da177e4 LT |
44 | } |
45 | ||
a9de9248 MH |
46 | static ssize_t show_name(struct device *dev, struct device_attribute *attr, char *buf) |
47 | { | |
48 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
49 | char name[249]; | |
50 | int i; | |
51 | ||
52 | for (i = 0; i < 248; i++) | |
53 | name[i] = hdev->dev_name[i]; | |
54 | ||
55 | name[248] = '\0'; | |
56 | return sprintf(buf, "%s\n", name); | |
57 | } | |
58 | ||
59 | static ssize_t show_class(struct device *dev, struct device_attribute *attr, char *buf) | |
60 | { | |
61 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
62 | return sprintf(buf, "0x%.2x%.2x%.2x\n", | |
63 | hdev->dev_class[2], hdev->dev_class[1], hdev->dev_class[0]); | |
64 | } | |
65 | ||
a91f2e39 | 66 | static ssize_t show_address(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 | 67 | { |
a91f2e39 | 68 | struct hci_dev *hdev = dev_get_drvdata(dev); |
1da177e4 LT |
69 | bdaddr_t bdaddr; |
70 | baswap(&bdaddr, &hdev->bdaddr); | |
71 | return sprintf(buf, "%s\n", batostr(&bdaddr)); | |
72 | } | |
73 | ||
a9de9248 MH |
74 | static ssize_t show_features(struct device *dev, struct device_attribute *attr, char *buf) |
75 | { | |
76 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
77 | ||
78 | return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", | |
79 | hdev->features[0], hdev->features[1], | |
80 | hdev->features[2], hdev->features[3], | |
81 | hdev->features[4], hdev->features[5], | |
82 | hdev->features[6], hdev->features[7]); | |
83 | } | |
84 | ||
1143e5a6 MH |
85 | static ssize_t show_manufacturer(struct device *dev, struct device_attribute *attr, char *buf) |
86 | { | |
87 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
88 | return sprintf(buf, "%d\n", hdev->manufacturer); | |
89 | } | |
90 | ||
91 | static ssize_t show_hci_version(struct device *dev, struct device_attribute *attr, char *buf) | |
92 | { | |
93 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
94 | return sprintf(buf, "%d\n", hdev->hci_ver); | |
95 | } | |
96 | ||
97 | static ssize_t show_hci_revision(struct device *dev, struct device_attribute *attr, char *buf) | |
98 | { | |
99 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
100 | return sprintf(buf, "%d\n", hdev->hci_rev); | |
101 | } | |
102 | ||
a91f2e39 | 103 | static ssize_t show_inquiry_cache(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 | 104 | { |
a91f2e39 | 105 | struct hci_dev *hdev = dev_get_drvdata(dev); |
1da177e4 LT |
106 | struct inquiry_cache *cache = &hdev->inq_cache; |
107 | struct inquiry_entry *e; | |
108 | int n = 0; | |
109 | ||
110 | hci_dev_lock_bh(hdev); | |
111 | ||
112 | for (e = cache->list; e; e = e->next) { | |
113 | struct inquiry_data *data = &e->data; | |
114 | bdaddr_t bdaddr; | |
115 | baswap(&bdaddr, &data->bdaddr); | |
a8bd28ba | 116 | n += sprintf(buf + n, "%s %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n", |
1da177e4 | 117 | batostr(&bdaddr), |
a8bd28ba MH |
118 | data->pscan_rep_mode, data->pscan_period_mode, |
119 | data->pscan_mode, data->dev_class[2], | |
120 | data->dev_class[1], data->dev_class[0], | |
121 | __le16_to_cpu(data->clock_offset), | |
122 | data->rssi, data->ssp_mode, e->timestamp); | |
1da177e4 LT |
123 | } |
124 | ||
125 | hci_dev_unlock_bh(hdev); | |
126 | return n; | |
127 | } | |
128 | ||
a91f2e39 | 129 | static ssize_t show_idle_timeout(struct device *dev, struct device_attribute *attr, char *buf) |
04837f64 | 130 | { |
a91f2e39 | 131 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
132 | return sprintf(buf, "%d\n", hdev->idle_timeout); |
133 | } | |
134 | ||
a91f2e39 | 135 | static ssize_t store_idle_timeout(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
04837f64 | 136 | { |
a91f2e39 | 137 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
138 | char *ptr; |
139 | __u32 val; | |
140 | ||
141 | val = simple_strtoul(buf, &ptr, 10); | |
142 | if (ptr == buf) | |
143 | return -EINVAL; | |
144 | ||
145 | if (val != 0 && (val < 500 || val > 3600000)) | |
146 | return -EINVAL; | |
147 | ||
148 | hdev->idle_timeout = val; | |
149 | ||
150 | return count; | |
151 | } | |
152 | ||
a91f2e39 | 153 | static ssize_t show_sniff_max_interval(struct device *dev, struct device_attribute *attr, char *buf) |
04837f64 | 154 | { |
a91f2e39 | 155 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
156 | return sprintf(buf, "%d\n", hdev->sniff_max_interval); |
157 | } | |
158 | ||
a91f2e39 | 159 | static ssize_t store_sniff_max_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
04837f64 | 160 | { |
a91f2e39 | 161 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
162 | char *ptr; |
163 | __u16 val; | |
164 | ||
165 | val = simple_strtoul(buf, &ptr, 10); | |
166 | if (ptr == buf) | |
167 | return -EINVAL; | |
168 | ||
169 | if (val < 0x0002 || val > 0xFFFE || val % 2) | |
170 | return -EINVAL; | |
171 | ||
172 | if (val < hdev->sniff_min_interval) | |
173 | return -EINVAL; | |
174 | ||
175 | hdev->sniff_max_interval = val; | |
176 | ||
177 | return count; | |
178 | } | |
179 | ||
a91f2e39 | 180 | static ssize_t show_sniff_min_interval(struct device *dev, struct device_attribute *attr, char *buf) |
04837f64 | 181 | { |
a91f2e39 | 182 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
183 | return sprintf(buf, "%d\n", hdev->sniff_min_interval); |
184 | } | |
185 | ||
a91f2e39 | 186 | static ssize_t store_sniff_min_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
04837f64 | 187 | { |
a91f2e39 | 188 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
189 | char *ptr; |
190 | __u16 val; | |
191 | ||
192 | val = simple_strtoul(buf, &ptr, 10); | |
193 | if (ptr == buf) | |
194 | return -EINVAL; | |
195 | ||
196 | if (val < 0x0002 || val > 0xFFFE || val % 2) | |
197 | return -EINVAL; | |
198 | ||
199 | if (val > hdev->sniff_max_interval) | |
200 | return -EINVAL; | |
201 | ||
202 | hdev->sniff_min_interval = val; | |
203 | ||
204 | return count; | |
205 | } | |
206 | ||
a91f2e39 | 207 | static DEVICE_ATTR(type, S_IRUGO, show_type, NULL); |
a9de9248 MH |
208 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); |
209 | static DEVICE_ATTR(class, S_IRUGO, show_class, NULL); | |
a91f2e39 | 210 | static DEVICE_ATTR(address, S_IRUGO, show_address, NULL); |
a9de9248 | 211 | static DEVICE_ATTR(features, S_IRUGO, show_features, NULL); |
1143e5a6 MH |
212 | static DEVICE_ATTR(manufacturer, S_IRUGO, show_manufacturer, NULL); |
213 | static DEVICE_ATTR(hci_version, S_IRUGO, show_hci_version, NULL); | |
214 | static DEVICE_ATTR(hci_revision, S_IRUGO, show_hci_revision, NULL); | |
a91f2e39 | 215 | static DEVICE_ATTR(inquiry_cache, S_IRUGO, show_inquiry_cache, NULL); |
1da177e4 | 216 | |
a91f2e39 | 217 | static DEVICE_ATTR(idle_timeout, S_IRUGO | S_IWUSR, |
04837f64 | 218 | show_idle_timeout, store_idle_timeout); |
a91f2e39 | 219 | static DEVICE_ATTR(sniff_max_interval, S_IRUGO | S_IWUSR, |
04837f64 | 220 | show_sniff_max_interval, store_sniff_max_interval); |
a91f2e39 | 221 | static DEVICE_ATTR(sniff_min_interval, S_IRUGO | S_IWUSR, |
04837f64 MH |
222 | show_sniff_min_interval, store_sniff_min_interval); |
223 | ||
a91f2e39 | 224 | static struct device_attribute *bt_attrs[] = { |
a91f2e39 | 225 | &dev_attr_type, |
a9de9248 MH |
226 | &dev_attr_name, |
227 | &dev_attr_class, | |
a91f2e39 | 228 | &dev_attr_address, |
a9de9248 | 229 | &dev_attr_features, |
1143e5a6 MH |
230 | &dev_attr_manufacturer, |
231 | &dev_attr_hci_version, | |
232 | &dev_attr_hci_revision, | |
a91f2e39 MH |
233 | &dev_attr_inquiry_cache, |
234 | &dev_attr_idle_timeout, | |
235 | &dev_attr_sniff_max_interval, | |
236 | &dev_attr_sniff_min_interval, | |
1da177e4 LT |
237 | NULL |
238 | }; | |
239 | ||
b219e3ac MH |
240 | static ssize_t show_conn_type(struct device *dev, struct device_attribute *attr, char *buf) |
241 | { | |
242 | struct hci_conn *conn = dev_get_drvdata(dev); | |
243 | return sprintf(buf, "%s\n", conn->type == ACL_LINK ? "ACL" : "SCO"); | |
244 | } | |
245 | ||
246 | static ssize_t show_conn_address(struct device *dev, struct device_attribute *attr, char *buf) | |
247 | { | |
248 | struct hci_conn *conn = dev_get_drvdata(dev); | |
249 | bdaddr_t bdaddr; | |
250 | baswap(&bdaddr, &conn->dst); | |
251 | return sprintf(buf, "%s\n", batostr(&bdaddr)); | |
252 | } | |
253 | ||
a8bd28ba MH |
254 | static ssize_t show_conn_features(struct device *dev, struct device_attribute *attr, char *buf) |
255 | { | |
256 | struct hci_conn *conn = dev_get_drvdata(dev); | |
257 | ||
258 | return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", | |
259 | conn->features[0], conn->features[1], | |
260 | conn->features[2], conn->features[3], | |
261 | conn->features[4], conn->features[5], | |
262 | conn->features[6], conn->features[7]); | |
263 | } | |
264 | ||
b219e3ac MH |
265 | #define CONN_ATTR(_name,_mode,_show,_store) \ |
266 | struct device_attribute conn_attr_##_name = __ATTR(_name,_mode,_show,_store) | |
267 | ||
268 | static CONN_ATTR(type, S_IRUGO, show_conn_type, NULL); | |
269 | static CONN_ATTR(address, S_IRUGO, show_conn_address, NULL); | |
a8bd28ba | 270 | static CONN_ATTR(features, S_IRUGO, show_conn_features, NULL); |
b219e3ac MH |
271 | |
272 | static struct device_attribute *conn_attrs[] = { | |
273 | &conn_attr_type, | |
274 | &conn_attr_address, | |
a8bd28ba | 275 | &conn_attr_features, |
b219e3ac MH |
276 | NULL |
277 | }; | |
278 | ||
a91f2e39 | 279 | struct class *bt_class = NULL; |
be9d1227 MH |
280 | EXPORT_SYMBOL_GPL(bt_class); |
281 | ||
27d35284 MH |
282 | static struct bus_type bt_bus = { |
283 | .name = "bluetooth", | |
284 | }; | |
285 | ||
286 | static struct platform_device *bt_platform; | |
287 | ||
a91f2e39 MH |
288 | static void bt_release(struct device *dev) |
289 | { | |
b219e3ac MH |
290 | void *data = dev_get_drvdata(dev); |
291 | kfree(data); | |
292 | } | |
293 | ||
c4028958 | 294 | static void add_conn(struct work_struct *work) |
b219e3ac | 295 | { |
c4028958 | 296 | struct hci_conn *conn = container_of(work, struct hci_conn, work); |
b219e3ac MH |
297 | int i; |
298 | ||
b6c06321 | 299 | flush_workqueue(btdelconn); |
5396c935 | 300 | |
c893779e | 301 | if (device_add(&conn->dev) < 0) { |
df5c37ea MH |
302 | BT_ERR("Failed to register connection device"); |
303 | return; | |
304 | } | |
b219e3ac MH |
305 | |
306 | for (i = 0; conn_attrs[i]; i++) | |
df5c37ea MH |
307 | if (device_create_file(&conn->dev, conn_attrs[i]) < 0) |
308 | BT_ERR("Failed to create connection attribute"); | |
b219e3ac MH |
309 | } |
310 | ||
311 | void hci_conn_add_sysfs(struct hci_conn *conn) | |
312 | { | |
313 | struct hci_dev *hdev = conn->hdev; | |
b219e3ac MH |
314 | |
315 | BT_DBG("conn %p", conn); | |
316 | ||
e52726de MH |
317 | conn->dev.bus = &bt_bus; |
318 | conn->dev.parent = &hdev->dev; | |
319 | ||
b219e3ac MH |
320 | conn->dev.release = bt_release; |
321 | ||
7d0db0a3 MH |
322 | snprintf(conn->dev.bus_id, BUS_ID_SIZE, "%s:%d", |
323 | hdev->name, conn->handle); | |
b219e3ac MH |
324 | |
325 | dev_set_drvdata(&conn->dev, conn); | |
326 | ||
c893779e MH |
327 | device_initialize(&conn->dev); |
328 | ||
c4028958 | 329 | INIT_WORK(&conn->work, add_conn); |
b219e3ac | 330 | |
b6c06321 | 331 | queue_work(btaddconn, &conn->work); |
b219e3ac MH |
332 | } |
333 | ||
8ac62dc7 DY |
334 | /* |
335 | * The rfcomm tty device will possibly retain even when conn | |
336 | * is down, and sysfs doesn't support move zombie device, | |
337 | * so we should move the device before conn device is destroyed. | |
338 | */ | |
acea6852 DY |
339 | static int __match_tty(struct device *dev, void *data) |
340 | { | |
8ac62dc7 | 341 | return !strncmp(dev->bus_id, "rfcomm", 6); |
acea6852 DY |
342 | } |
343 | ||
c4028958 | 344 | static void del_conn(struct work_struct *work) |
b219e3ac | 345 | { |
c4028958 | 346 | struct hci_conn *conn = container_of(work, struct hci_conn, work); |
0cd63c80 | 347 | struct hci_dev *hdev = conn->hdev; |
acea6852 | 348 | |
988d0093 DM |
349 | while (1) { |
350 | struct device *dev; | |
351 | ||
352 | dev = device_find_child(&conn->dev, NULL, __match_tty); | |
353 | if (!dev) | |
354 | break; | |
acea6852 DY |
355 | device_move(dev, NULL); |
356 | put_device(dev); | |
357 | } | |
0cd63c80 | 358 | |
b219e3ac | 359 | device_del(&conn->dev); |
38b7da09 | 360 | put_device(&conn->dev); |
0cd63c80 | 361 | hci_dev_put(hdev); |
b219e3ac MH |
362 | } |
363 | ||
364 | void hci_conn_del_sysfs(struct hci_conn *conn) | |
365 | { | |
366 | BT_DBG("conn %p", conn); | |
367 | ||
c893779e MH |
368 | if (!device_is_registered(&conn->dev)) |
369 | return; | |
370 | ||
c4028958 | 371 | INIT_WORK(&conn->work, del_conn); |
b219e3ac | 372 | |
b6c06321 | 373 | queue_work(btdelconn, &conn->work); |
a91f2e39 MH |
374 | } |
375 | ||
1da177e4 LT |
376 | int hci_register_sysfs(struct hci_dev *hdev) |
377 | { | |
a91f2e39 | 378 | struct device *dev = &hdev->dev; |
1da177e4 LT |
379 | unsigned int i; |
380 | int err; | |
381 | ||
382 | BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type); | |
383 | ||
53c1d4b0 | 384 | dev->bus = &bt_bus; |
e9c4bec6 | 385 | dev->parent = hdev->parent; |
a91f2e39 MH |
386 | |
387 | strlcpy(dev->bus_id, hdev->name, BUS_ID_SIZE); | |
1da177e4 | 388 | |
a91f2e39 | 389 | dev->release = bt_release; |
27d35284 | 390 | |
a91f2e39 | 391 | dev_set_drvdata(dev, hdev); |
27d35284 | 392 | |
a91f2e39 | 393 | err = device_register(dev); |
1da177e4 LT |
394 | if (err < 0) |
395 | return err; | |
396 | ||
397 | for (i = 0; bt_attrs[i]; i++) | |
df5c37ea MH |
398 | if (device_create_file(dev, bt_attrs[i]) < 0) |
399 | BT_ERR("Failed to create device attribute"); | |
1da177e4 LT |
400 | |
401 | return 0; | |
402 | } | |
403 | ||
404 | void hci_unregister_sysfs(struct hci_dev *hdev) | |
405 | { | |
1da177e4 LT |
406 | BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type); |
407 | ||
4d0eb004 | 408 | device_del(&hdev->dev); |
1da177e4 LT |
409 | } |
410 | ||
411 | int __init bt_sysfs_init(void) | |
412 | { | |
27d35284 MH |
413 | int err; |
414 | ||
b6c06321 DY |
415 | btaddconn = create_singlethread_workqueue("btaddconn"); |
416 | if (!btaddconn) { | |
417 | err = -ENOMEM; | |
418 | goto out; | |
419 | } | |
5396c935 | 420 | |
b6c06321 DY |
421 | btdelconn = create_singlethread_workqueue("btdelconn"); |
422 | if (!btdelconn) { | |
423 | err = -ENOMEM; | |
424 | goto out_del; | |
425 | } | |
426 | ||
27d35284 | 427 | bt_platform = platform_device_register_simple("bluetooth", -1, NULL, 0); |
b6c06321 DY |
428 | if (IS_ERR(bt_platform)) { |
429 | err = PTR_ERR(bt_platform); | |
430 | goto out_platform; | |
431 | } | |
27d35284 MH |
432 | |
433 | err = bus_register(&bt_bus); | |
b6c06321 DY |
434 | if (err < 0) |
435 | goto out_bus; | |
27d35284 | 436 | |
a91f2e39 MH |
437 | bt_class = class_create(THIS_MODULE, "bluetooth"); |
438 | if (IS_ERR(bt_class)) { | |
b6c06321 DY |
439 | err = PTR_ERR(bt_class); |
440 | goto out_class; | |
27d35284 MH |
441 | } |
442 | ||
443 | return 0; | |
b6c06321 DY |
444 | |
445 | out_class: | |
446 | bus_unregister(&bt_bus); | |
447 | out_bus: | |
448 | platform_device_unregister(bt_platform); | |
449 | out_platform: | |
450 | destroy_workqueue(btdelconn); | |
451 | out_del: | |
452 | destroy_workqueue(btaddconn); | |
453 | out: | |
454 | return err; | |
1da177e4 LT |
455 | } |
456 | ||
860e13b5 | 457 | void bt_sysfs_cleanup(void) |
1da177e4 | 458 | { |
b6c06321 | 459 | destroy_workqueue(btaddconn); |
5396c935 | 460 | |
b6c06321 | 461 | destroy_workqueue(btdelconn); |
5396c935 | 462 | |
a91f2e39 | 463 | class_destroy(bt_class); |
5396c935 | 464 | |
27d35284 | 465 | bus_unregister(&bt_bus); |
5396c935 | 466 | |
27d35284 | 467 | platform_device_unregister(bt_platform); |
1da177e4 | 468 | } |