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 | ||
90855d7b MH |
9 | struct class *bt_class = NULL; |
10 | EXPORT_SYMBOL_GPL(bt_class); | |
11 | ||
a67e899c | 12 | static struct workqueue_struct *bt_workq; |
1da177e4 | 13 | |
90855d7b MH |
14 | static inline char *link_typetostr(int type) |
15 | { | |
16 | switch (type) { | |
17 | case ACL_LINK: | |
18 | return "ACL"; | |
19 | case SCO_LINK: | |
20 | return "SCO"; | |
21 | case ESCO_LINK: | |
22 | return "eSCO"; | |
23 | default: | |
24 | return "UNKNOWN"; | |
25 | } | |
26 | } | |
27 | ||
28 | static ssize_t show_link_type(struct device *dev, struct device_attribute *attr, char *buf) | |
29 | { | |
30 | struct hci_conn *conn = dev_get_drvdata(dev); | |
31 | return sprintf(buf, "%s\n", link_typetostr(conn->type)); | |
32 | } | |
33 | ||
34 | static ssize_t show_link_address(struct device *dev, struct device_attribute *attr, char *buf) | |
35 | { | |
36 | struct hci_conn *conn = dev_get_drvdata(dev); | |
37 | bdaddr_t bdaddr; | |
38 | baswap(&bdaddr, &conn->dst); | |
39 | return sprintf(buf, "%s\n", batostr(&bdaddr)); | |
40 | } | |
41 | ||
42 | static ssize_t show_link_features(struct device *dev, struct device_attribute *attr, char *buf) | |
43 | { | |
44 | struct hci_conn *conn = dev_get_drvdata(dev); | |
45 | ||
46 | return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", | |
47 | conn->features[0], conn->features[1], | |
48 | conn->features[2], conn->features[3], | |
49 | conn->features[4], conn->features[5], | |
50 | conn->features[6], conn->features[7]); | |
51 | } | |
52 | ||
53 | #define LINK_ATTR(_name,_mode,_show,_store) \ | |
54 | struct device_attribute link_attr_##_name = __ATTR(_name,_mode,_show,_store) | |
55 | ||
56 | static LINK_ATTR(type, S_IRUGO, show_link_type, NULL); | |
57 | static LINK_ATTR(address, S_IRUGO, show_link_address, NULL); | |
58 | static LINK_ATTR(features, S_IRUGO, show_link_features, NULL); | |
59 | ||
60 | static struct attribute *bt_link_attrs[] = { | |
61 | &link_attr_type.attr, | |
62 | &link_attr_address.attr, | |
63 | &link_attr_features.attr, | |
64 | NULL | |
65 | }; | |
66 | ||
67 | static struct attribute_group bt_link_group = { | |
68 | .attrs = bt_link_attrs, | |
69 | }; | |
70 | ||
a4dbd674 | 71 | static const struct attribute_group *bt_link_groups[] = { |
90855d7b MH |
72 | &bt_link_group, |
73 | NULL | |
74 | }; | |
75 | ||
76 | static void bt_link_release(struct device *dev) | |
77 | { | |
78 | void *data = dev_get_drvdata(dev); | |
79 | kfree(data); | |
80 | } | |
81 | ||
82 | static struct device_type bt_link = { | |
83 | .name = "link", | |
84 | .groups = bt_link_groups, | |
85 | .release = bt_link_release, | |
86 | }; | |
87 | ||
88 | static void add_conn(struct work_struct *work) | |
89 | { | |
f3784d83 | 90 | struct hci_conn *conn = container_of(work, struct hci_conn, work_add); |
457ca7bb | 91 | struct hci_dev *hdev = conn->hdev; |
90855d7b | 92 | |
457ca7bb MH |
93 | dev_set_name(&conn->dev, "%s:%d", hdev->name, conn->handle); |
94 | ||
90855d7b MH |
95 | if (device_add(&conn->dev) < 0) { |
96 | BT_ERR("Failed to register connection device"); | |
97 | return; | |
98 | } | |
384943ec MH |
99 | |
100 | hci_dev_hold(hdev); | |
90855d7b MH |
101 | } |
102 | ||
90855d7b MH |
103 | /* |
104 | * The rfcomm tty device will possibly retain even when conn | |
105 | * is down, and sysfs doesn't support move zombie device, | |
106 | * so we should move the device before conn device is destroyed. | |
107 | */ | |
108 | static int __match_tty(struct device *dev, void *data) | |
109 | { | |
fb28ad35 | 110 | return !strncmp(dev_name(dev), "rfcomm", 6); |
90855d7b MH |
111 | } |
112 | ||
113 | static void del_conn(struct work_struct *work) | |
114 | { | |
f3784d83 | 115 | struct hci_conn *conn = container_of(work, struct hci_conn, work_del); |
90855d7b MH |
116 | struct hci_dev *hdev = conn->hdev; |
117 | ||
a67e899c MH |
118 | if (!device_is_registered(&conn->dev)) |
119 | return; | |
f3784d83 | 120 | |
90855d7b MH |
121 | while (1) { |
122 | struct device *dev; | |
123 | ||
124 | dev = device_find_child(&conn->dev, NULL, __match_tty); | |
125 | if (!dev) | |
126 | break; | |
ffa6a705 | 127 | device_move(dev, NULL, DPM_ORDER_DEV_LAST); |
90855d7b MH |
128 | put_device(dev); |
129 | } | |
130 | ||
131 | device_del(&conn->dev); | |
132 | put_device(&conn->dev); | |
384943ec | 133 | |
90855d7b MH |
134 | hci_dev_put(hdev); |
135 | } | |
136 | ||
a67e899c | 137 | void hci_conn_init_sysfs(struct hci_conn *conn) |
90855d7b | 138 | { |
a67e899c MH |
139 | struct hci_dev *hdev = conn->hdev; |
140 | ||
90855d7b MH |
141 | BT_DBG("conn %p", conn); |
142 | ||
a67e899c MH |
143 | conn->dev.type = &bt_link; |
144 | conn->dev.class = bt_class; | |
145 | conn->dev.parent = &hdev->dev; | |
146 | ||
147 | dev_set_drvdata(&conn->dev, conn); | |
90855d7b | 148 | |
a67e899c MH |
149 | device_initialize(&conn->dev); |
150 | ||
151 | INIT_WORK(&conn->work_add, add_conn); | |
f3784d83 | 152 | INIT_WORK(&conn->work_del, del_conn); |
a67e899c MH |
153 | } |
154 | ||
155 | void hci_conn_add_sysfs(struct hci_conn *conn) | |
156 | { | |
a67e899c MH |
157 | BT_DBG("conn %p", conn); |
158 | ||
a67e899c MH |
159 | queue_work(bt_workq, &conn->work_add); |
160 | } | |
161 | ||
162 | void hci_conn_del_sysfs(struct hci_conn *conn) | |
163 | { | |
164 | BT_DBG("conn %p", conn); | |
90855d7b | 165 | |
a67e899c | 166 | queue_work(bt_workq, &conn->work_del); |
90855d7b MH |
167 | } |
168 | ||
169 | static inline char *host_typetostr(int type) | |
1da177e4 | 170 | { |
4d0eb004 | 171 | switch (type) { |
0ac53939 | 172 | case HCI_VIRTUAL: |
4d0eb004 MH |
173 | return "VIRTUAL"; |
174 | case HCI_USB: | |
175 | return "USB"; | |
176 | case HCI_PCCARD: | |
177 | return "PCCARD"; | |
178 | case HCI_UART: | |
179 | return "UART"; | |
180 | case HCI_RS232: | |
181 | return "RS232"; | |
182 | case HCI_PCI: | |
183 | return "PCI"; | |
0ac53939 MH |
184 | case HCI_SDIO: |
185 | return "SDIO"; | |
4d0eb004 MH |
186 | default: |
187 | return "UNKNOWN"; | |
188 | } | |
1da177e4 LT |
189 | } |
190 | ||
a91f2e39 | 191 | static ssize_t show_type(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 | 192 | { |
a91f2e39 | 193 | struct hci_dev *hdev = dev_get_drvdata(dev); |
90855d7b | 194 | return sprintf(buf, "%s\n", host_typetostr(hdev->type)); |
1da177e4 LT |
195 | } |
196 | ||
a9de9248 MH |
197 | static ssize_t show_name(struct device *dev, struct device_attribute *attr, char *buf) |
198 | { | |
199 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
200 | char name[249]; | |
201 | int i; | |
202 | ||
203 | for (i = 0; i < 248; i++) | |
204 | name[i] = hdev->dev_name[i]; | |
205 | ||
206 | name[248] = '\0'; | |
207 | return sprintf(buf, "%s\n", name); | |
208 | } | |
209 | ||
210 | static ssize_t show_class(struct device *dev, struct device_attribute *attr, char *buf) | |
211 | { | |
212 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
213 | return sprintf(buf, "0x%.2x%.2x%.2x\n", | |
214 | hdev->dev_class[2], hdev->dev_class[1], hdev->dev_class[0]); | |
215 | } | |
216 | ||
a91f2e39 | 217 | static ssize_t show_address(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 | 218 | { |
a91f2e39 | 219 | struct hci_dev *hdev = dev_get_drvdata(dev); |
1da177e4 LT |
220 | bdaddr_t bdaddr; |
221 | baswap(&bdaddr, &hdev->bdaddr); | |
222 | return sprintf(buf, "%s\n", batostr(&bdaddr)); | |
223 | } | |
224 | ||
a9de9248 MH |
225 | static ssize_t show_features(struct device *dev, struct device_attribute *attr, char *buf) |
226 | { | |
227 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
228 | ||
229 | return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", | |
230 | hdev->features[0], hdev->features[1], | |
231 | hdev->features[2], hdev->features[3], | |
232 | hdev->features[4], hdev->features[5], | |
233 | hdev->features[6], hdev->features[7]); | |
234 | } | |
235 | ||
1143e5a6 MH |
236 | static ssize_t show_manufacturer(struct device *dev, struct device_attribute *attr, char *buf) |
237 | { | |
238 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
239 | return sprintf(buf, "%d\n", hdev->manufacturer); | |
240 | } | |
241 | ||
242 | static ssize_t show_hci_version(struct device *dev, struct device_attribute *attr, char *buf) | |
243 | { | |
244 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
245 | return sprintf(buf, "%d\n", hdev->hci_ver); | |
246 | } | |
247 | ||
248 | static ssize_t show_hci_revision(struct device *dev, struct device_attribute *attr, char *buf) | |
249 | { | |
250 | struct hci_dev *hdev = dev_get_drvdata(dev); | |
251 | return sprintf(buf, "%d\n", hdev->hci_rev); | |
252 | } | |
253 | ||
a91f2e39 | 254 | static ssize_t show_inquiry_cache(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 | 255 | { |
a91f2e39 | 256 | struct hci_dev *hdev = dev_get_drvdata(dev); |
1da177e4 LT |
257 | struct inquiry_cache *cache = &hdev->inq_cache; |
258 | struct inquiry_entry *e; | |
259 | int n = 0; | |
260 | ||
261 | hci_dev_lock_bh(hdev); | |
262 | ||
263 | for (e = cache->list; e; e = e->next) { | |
264 | struct inquiry_data *data = &e->data; | |
265 | bdaddr_t bdaddr; | |
266 | baswap(&bdaddr, &data->bdaddr); | |
a8bd28ba | 267 | n += sprintf(buf + n, "%s %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n", |
1da177e4 | 268 | batostr(&bdaddr), |
a8bd28ba MH |
269 | data->pscan_rep_mode, data->pscan_period_mode, |
270 | data->pscan_mode, data->dev_class[2], | |
271 | data->dev_class[1], data->dev_class[0], | |
272 | __le16_to_cpu(data->clock_offset), | |
273 | data->rssi, data->ssp_mode, e->timestamp); | |
1da177e4 LT |
274 | } |
275 | ||
276 | hci_dev_unlock_bh(hdev); | |
277 | return n; | |
278 | } | |
279 | ||
a91f2e39 | 280 | static ssize_t show_idle_timeout(struct device *dev, struct device_attribute *attr, char *buf) |
04837f64 | 281 | { |
a91f2e39 | 282 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
283 | return sprintf(buf, "%d\n", hdev->idle_timeout); |
284 | } | |
285 | ||
a91f2e39 | 286 | static ssize_t store_idle_timeout(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
04837f64 | 287 | { |
a91f2e39 | 288 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
289 | char *ptr; |
290 | __u32 val; | |
291 | ||
292 | val = simple_strtoul(buf, &ptr, 10); | |
293 | if (ptr == buf) | |
294 | return -EINVAL; | |
295 | ||
296 | if (val != 0 && (val < 500 || val > 3600000)) | |
297 | return -EINVAL; | |
298 | ||
299 | hdev->idle_timeout = val; | |
300 | ||
301 | return count; | |
302 | } | |
303 | ||
a91f2e39 | 304 | static ssize_t show_sniff_max_interval(struct device *dev, struct device_attribute *attr, char *buf) |
04837f64 | 305 | { |
a91f2e39 | 306 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
307 | return sprintf(buf, "%d\n", hdev->sniff_max_interval); |
308 | } | |
309 | ||
a91f2e39 | 310 | static ssize_t store_sniff_max_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
04837f64 | 311 | { |
a91f2e39 | 312 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
313 | char *ptr; |
314 | __u16 val; | |
315 | ||
316 | val = simple_strtoul(buf, &ptr, 10); | |
317 | if (ptr == buf) | |
318 | return -EINVAL; | |
319 | ||
320 | if (val < 0x0002 || val > 0xFFFE || val % 2) | |
321 | return -EINVAL; | |
322 | ||
323 | if (val < hdev->sniff_min_interval) | |
324 | return -EINVAL; | |
325 | ||
326 | hdev->sniff_max_interval = val; | |
327 | ||
328 | return count; | |
329 | } | |
330 | ||
a91f2e39 | 331 | static ssize_t show_sniff_min_interval(struct device *dev, struct device_attribute *attr, char *buf) |
04837f64 | 332 | { |
a91f2e39 | 333 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
334 | return sprintf(buf, "%d\n", hdev->sniff_min_interval); |
335 | } | |
336 | ||
a91f2e39 | 337 | static ssize_t store_sniff_min_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
04837f64 | 338 | { |
a91f2e39 | 339 | struct hci_dev *hdev = dev_get_drvdata(dev); |
04837f64 MH |
340 | char *ptr; |
341 | __u16 val; | |
342 | ||
343 | val = simple_strtoul(buf, &ptr, 10); | |
344 | if (ptr == buf) | |
345 | return -EINVAL; | |
346 | ||
347 | if (val < 0x0002 || val > 0xFFFE || val % 2) | |
348 | return -EINVAL; | |
349 | ||
350 | if (val > hdev->sniff_max_interval) | |
351 | return -EINVAL; | |
352 | ||
353 | hdev->sniff_min_interval = val; | |
354 | ||
355 | return count; | |
356 | } | |
357 | ||
a91f2e39 | 358 | static DEVICE_ATTR(type, S_IRUGO, show_type, NULL); |
a9de9248 MH |
359 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); |
360 | static DEVICE_ATTR(class, S_IRUGO, show_class, NULL); | |
a91f2e39 | 361 | static DEVICE_ATTR(address, S_IRUGO, show_address, NULL); |
a9de9248 | 362 | static DEVICE_ATTR(features, S_IRUGO, show_features, NULL); |
1143e5a6 MH |
363 | static DEVICE_ATTR(manufacturer, S_IRUGO, show_manufacturer, NULL); |
364 | static DEVICE_ATTR(hci_version, S_IRUGO, show_hci_version, NULL); | |
365 | static DEVICE_ATTR(hci_revision, S_IRUGO, show_hci_revision, NULL); | |
a91f2e39 | 366 | static DEVICE_ATTR(inquiry_cache, S_IRUGO, show_inquiry_cache, NULL); |
1da177e4 | 367 | |
a91f2e39 | 368 | static DEVICE_ATTR(idle_timeout, S_IRUGO | S_IWUSR, |
04837f64 | 369 | show_idle_timeout, store_idle_timeout); |
a91f2e39 | 370 | static DEVICE_ATTR(sniff_max_interval, S_IRUGO | S_IWUSR, |
04837f64 | 371 | show_sniff_max_interval, store_sniff_max_interval); |
a91f2e39 | 372 | static DEVICE_ATTR(sniff_min_interval, S_IRUGO | S_IWUSR, |
04837f64 MH |
373 | show_sniff_min_interval, store_sniff_min_interval); |
374 | ||
90855d7b MH |
375 | static struct attribute *bt_host_attrs[] = { |
376 | &dev_attr_type.attr, | |
377 | &dev_attr_name.attr, | |
378 | &dev_attr_class.attr, | |
379 | &dev_attr_address.attr, | |
380 | &dev_attr_features.attr, | |
381 | &dev_attr_manufacturer.attr, | |
382 | &dev_attr_hci_version.attr, | |
383 | &dev_attr_hci_revision.attr, | |
384 | &dev_attr_inquiry_cache.attr, | |
385 | &dev_attr_idle_timeout.attr, | |
386 | &dev_attr_sniff_max_interval.attr, | |
387 | &dev_attr_sniff_min_interval.attr, | |
1da177e4 LT |
388 | NULL |
389 | }; | |
390 | ||
90855d7b MH |
391 | static struct attribute_group bt_host_group = { |
392 | .attrs = bt_host_attrs, | |
b219e3ac MH |
393 | }; |
394 | ||
a4dbd674 | 395 | static const struct attribute_group *bt_host_groups[] = { |
90855d7b MH |
396 | &bt_host_group, |
397 | NULL | |
27d35284 MH |
398 | }; |
399 | ||
90855d7b | 400 | static void bt_host_release(struct device *dev) |
a91f2e39 | 401 | { |
b219e3ac MH |
402 | void *data = dev_get_drvdata(dev); |
403 | kfree(data); | |
404 | } | |
405 | ||
90855d7b MH |
406 | static struct device_type bt_host = { |
407 | .name = "host", | |
408 | .groups = bt_host_groups, | |
409 | .release = bt_host_release, | |
410 | }; | |
a91f2e39 | 411 | |
1da177e4 LT |
412 | int hci_register_sysfs(struct hci_dev *hdev) |
413 | { | |
a91f2e39 | 414 | struct device *dev = &hdev->dev; |
1da177e4 LT |
415 | int err; |
416 | ||
417 | BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type); | |
418 | ||
90855d7b MH |
419 | dev->type = &bt_host; |
420 | dev->class = bt_class; | |
e9c4bec6 | 421 | dev->parent = hdev->parent; |
a91f2e39 | 422 | |
2e792995 | 423 | dev_set_name(dev, "%s", hdev->name); |
1da177e4 | 424 | |
a91f2e39 | 425 | dev_set_drvdata(dev, hdev); |
27d35284 | 426 | |
a91f2e39 | 427 | err = device_register(dev); |
1da177e4 LT |
428 | if (err < 0) |
429 | return err; | |
430 | ||
1da177e4 LT |
431 | return 0; |
432 | } | |
433 | ||
434 | void hci_unregister_sysfs(struct hci_dev *hdev) | |
435 | { | |
1da177e4 LT |
436 | BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type); |
437 | ||
4d0eb004 | 438 | device_del(&hdev->dev); |
1da177e4 LT |
439 | } |
440 | ||
441 | int __init bt_sysfs_init(void) | |
442 | { | |
a67e899c MH |
443 | bt_workq = create_singlethread_workqueue("bluetooth"); |
444 | if (!bt_workq) | |
90855d7b | 445 | return -ENOMEM; |
27d35284 | 446 | |
a91f2e39 MH |
447 | bt_class = class_create(THIS_MODULE, "bluetooth"); |
448 | if (IS_ERR(bt_class)) { | |
a67e899c | 449 | destroy_workqueue(bt_workq); |
90855d7b | 450 | return PTR_ERR(bt_class); |
27d35284 MH |
451 | } |
452 | ||
453 | return 0; | |
1da177e4 LT |
454 | } |
455 | ||
860e13b5 | 456 | void bt_sysfs_cleanup(void) |
1da177e4 | 457 | { |
a67e899c | 458 | destroy_workqueue(bt_workq); |
5396c935 | 459 | |
a91f2e39 | 460 | class_destroy(bt_class); |
1da177e4 | 461 | } |