blob: 17f7fb7205535ce35f0fc9a7b96cdbf9d261c820 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* Bluetooth HCI driver model support. */
2
Linus Torvalds1da177e2005-04-16 15:20:36 -07003#include <linux/kernel.h>
4#include <linux/init.h>
5
Marcel Holtmann27d35282006-07-03 10:02:37 +02006#include <linux/platform_device.h>
7
Linus Torvalds1da177e2005-04-16 15:20:36 -07008#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
15
Marcel Holtmann4d0eb002006-07-06 12:34:41 +020016static inline char *typetostr(int type)
Linus Torvalds1da177e2005-04-16 15:20:36 -070017{
Marcel Holtmann4d0eb002006-07-06 12:34:41 +020018 switch (type) {
Marcel Holtmann0ac53932006-07-08 13:57:15 +020019 case HCI_VIRTUAL:
Marcel Holtmann4d0eb002006-07-06 12:34:41 +020020 return "VIRTUAL";
21 case HCI_USB:
22 return "USB";
23 case HCI_PCCARD:
24 return "PCCARD";
25 case HCI_UART:
26 return "UART";
27 case HCI_RS232:
28 return "RS232";
29 case HCI_PCI:
30 return "PCI";
Marcel Holtmann0ac53932006-07-08 13:57:15 +020031 case HCI_SDIO:
32 return "SDIO";
Marcel Holtmann4d0eb002006-07-06 12:34:41 +020033 default:
34 return "UNKNOWN";
35 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070036}
37
Marcel Holtmanna91f2e32006-07-03 10:02:41 +020038static ssize_t show_type(struct device *dev, struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -070039{
Marcel Holtmanna91f2e32006-07-03 10:02:41 +020040 struct hci_dev *hdev = dev_get_drvdata(dev);
Marcel Holtmann4d0eb002006-07-06 12:34:41 +020041 return sprintf(buf, "%s\n", typetostr(hdev->type));
Linus Torvalds1da177e2005-04-16 15:20:36 -070042}
43
Marcel Holtmanna9de9242007-10-20 13:33:56 +020044static ssize_t show_name(struct device *dev, struct device_attribute *attr, char *buf)
45{
46 struct hci_dev *hdev = dev_get_drvdata(dev);
47 char name[249];
48 int i;
49
50 for (i = 0; i < 248; i++)
51 name[i] = hdev->dev_name[i];
52
53 name[248] = '\0';
54 return sprintf(buf, "%s\n", name);
55}
56
57static ssize_t show_class(struct device *dev, struct device_attribute *attr, char *buf)
58{
59 struct hci_dev *hdev = dev_get_drvdata(dev);
60 return sprintf(buf, "0x%.2x%.2x%.2x\n",
61 hdev->dev_class[2], hdev->dev_class[1], hdev->dev_class[0]);
62}
63
Marcel Holtmanna91f2e32006-07-03 10:02:41 +020064static ssize_t show_address(struct device *dev, struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -070065{
Marcel Holtmanna91f2e32006-07-03 10:02:41 +020066 struct hci_dev *hdev = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -070067 bdaddr_t bdaddr;
68 baswap(&bdaddr, &hdev->bdaddr);
69 return sprintf(buf, "%s\n", batostr(&bdaddr));
70}
71
Marcel Holtmanna9de9242007-10-20 13:33:56 +020072static ssize_t show_features(struct device *dev, struct device_attribute *attr, char *buf)
73{
74 struct hci_dev *hdev = dev_get_drvdata(dev);
75
76 return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
77 hdev->features[0], hdev->features[1],
78 hdev->features[2], hdev->features[3],
79 hdev->features[4], hdev->features[5],
80 hdev->features[6], hdev->features[7]);
81}
82
Marcel Holtmann1143e5a2006-09-23 09:57:20 +020083static ssize_t show_manufacturer(struct device *dev, struct device_attribute *attr, char *buf)
84{
85 struct hci_dev *hdev = dev_get_drvdata(dev);
86 return sprintf(buf, "%d\n", hdev->manufacturer);
87}
88
89static ssize_t show_hci_version(struct device *dev, struct device_attribute *attr, char *buf)
90{
91 struct hci_dev *hdev = dev_get_drvdata(dev);
92 return sprintf(buf, "%d\n", hdev->hci_ver);
93}
94
95static ssize_t show_hci_revision(struct device *dev, struct device_attribute *attr, char *buf)
96{
97 struct hci_dev *hdev = dev_get_drvdata(dev);
98 return sprintf(buf, "%d\n", hdev->hci_rev);
99}
100
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200101static ssize_t show_inquiry_cache(struct device *dev, struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102{
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200103 struct hci_dev *hdev = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104 struct inquiry_cache *cache = &hdev->inq_cache;
105 struct inquiry_entry *e;
106 int n = 0;
107
108 hci_dev_lock_bh(hdev);
109
110 for (e = cache->list; e; e = e->next) {
111 struct inquiry_data *data = &e->data;
112 bdaddr_t bdaddr;
113 baswap(&bdaddr, &data->bdaddr);
114 n += sprintf(buf + n, "%s %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %u\n",
115 batostr(&bdaddr),
116 data->pscan_rep_mode, data->pscan_period_mode, data->pscan_mode,
117 data->dev_class[2], data->dev_class[1], data->dev_class[0],
118 __le16_to_cpu(data->clock_offset), data->rssi, e->timestamp);
119 }
120
121 hci_dev_unlock_bh(hdev);
122 return n;
123}
124
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200125static ssize_t show_idle_timeout(struct device *dev, struct device_attribute *attr, char *buf)
Marcel Holtmann04837f62006-07-03 10:02:33 +0200126{
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200127 struct hci_dev *hdev = dev_get_drvdata(dev);
Marcel Holtmann04837f62006-07-03 10:02:33 +0200128 return sprintf(buf, "%d\n", hdev->idle_timeout);
129}
130
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200131static ssize_t store_idle_timeout(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
Marcel Holtmann04837f62006-07-03 10:02:33 +0200132{
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200133 struct hci_dev *hdev = dev_get_drvdata(dev);
Marcel Holtmann04837f62006-07-03 10:02:33 +0200134 char *ptr;
135 __u32 val;
136
137 val = simple_strtoul(buf, &ptr, 10);
138 if (ptr == buf)
139 return -EINVAL;
140
141 if (val != 0 && (val < 500 || val > 3600000))
142 return -EINVAL;
143
144 hdev->idle_timeout = val;
145
146 return count;
147}
148
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200149static ssize_t show_sniff_max_interval(struct device *dev, struct device_attribute *attr, char *buf)
Marcel Holtmann04837f62006-07-03 10:02:33 +0200150{
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200151 struct hci_dev *hdev = dev_get_drvdata(dev);
Marcel Holtmann04837f62006-07-03 10:02:33 +0200152 return sprintf(buf, "%d\n", hdev->sniff_max_interval);
153}
154
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200155static ssize_t store_sniff_max_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
Marcel Holtmann04837f62006-07-03 10:02:33 +0200156{
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200157 struct hci_dev *hdev = dev_get_drvdata(dev);
Marcel Holtmann04837f62006-07-03 10:02:33 +0200158 char *ptr;
159 __u16 val;
160
161 val = simple_strtoul(buf, &ptr, 10);
162 if (ptr == buf)
163 return -EINVAL;
164
165 if (val < 0x0002 || val > 0xFFFE || val % 2)
166 return -EINVAL;
167
168 if (val < hdev->sniff_min_interval)
169 return -EINVAL;
170
171 hdev->sniff_max_interval = val;
172
173 return count;
174}
175
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200176static ssize_t show_sniff_min_interval(struct device *dev, struct device_attribute *attr, char *buf)
Marcel Holtmann04837f62006-07-03 10:02:33 +0200177{
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200178 struct hci_dev *hdev = dev_get_drvdata(dev);
Marcel Holtmann04837f62006-07-03 10:02:33 +0200179 return sprintf(buf, "%d\n", hdev->sniff_min_interval);
180}
181
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200182static ssize_t store_sniff_min_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
Marcel Holtmann04837f62006-07-03 10:02:33 +0200183{
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200184 struct hci_dev *hdev = dev_get_drvdata(dev);
Marcel Holtmann04837f62006-07-03 10:02:33 +0200185 char *ptr;
186 __u16 val;
187
188 val = simple_strtoul(buf, &ptr, 10);
189 if (ptr == buf)
190 return -EINVAL;
191
192 if (val < 0x0002 || val > 0xFFFE || val % 2)
193 return -EINVAL;
194
195 if (val > hdev->sniff_max_interval)
196 return -EINVAL;
197
198 hdev->sniff_min_interval = val;
199
200 return count;
201}
202
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200203static DEVICE_ATTR(type, S_IRUGO, show_type, NULL);
Marcel Holtmanna9de9242007-10-20 13:33:56 +0200204static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
205static DEVICE_ATTR(class, S_IRUGO, show_class, NULL);
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200206static DEVICE_ATTR(address, S_IRUGO, show_address, NULL);
Marcel Holtmanna9de9242007-10-20 13:33:56 +0200207static DEVICE_ATTR(features, S_IRUGO, show_features, NULL);
Marcel Holtmann1143e5a2006-09-23 09:57:20 +0200208static DEVICE_ATTR(manufacturer, S_IRUGO, show_manufacturer, NULL);
209static DEVICE_ATTR(hci_version, S_IRUGO, show_hci_version, NULL);
210static DEVICE_ATTR(hci_revision, S_IRUGO, show_hci_revision, NULL);
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200211static DEVICE_ATTR(inquiry_cache, S_IRUGO, show_inquiry_cache, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200213static DEVICE_ATTR(idle_timeout, S_IRUGO | S_IWUSR,
Marcel Holtmann04837f62006-07-03 10:02:33 +0200214 show_idle_timeout, store_idle_timeout);
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200215static DEVICE_ATTR(sniff_max_interval, S_IRUGO | S_IWUSR,
Marcel Holtmann04837f62006-07-03 10:02:33 +0200216 show_sniff_max_interval, store_sniff_max_interval);
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200217static DEVICE_ATTR(sniff_min_interval, S_IRUGO | S_IWUSR,
Marcel Holtmann04837f62006-07-03 10:02:33 +0200218 show_sniff_min_interval, store_sniff_min_interval);
219
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200220static struct device_attribute *bt_attrs[] = {
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200221 &dev_attr_type,
Marcel Holtmanna9de9242007-10-20 13:33:56 +0200222 &dev_attr_name,
223 &dev_attr_class,
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200224 &dev_attr_address,
Marcel Holtmanna9de9242007-10-20 13:33:56 +0200225 &dev_attr_features,
Marcel Holtmann1143e5a2006-09-23 09:57:20 +0200226 &dev_attr_manufacturer,
227 &dev_attr_hci_version,
228 &dev_attr_hci_revision,
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200229 &dev_attr_inquiry_cache,
230 &dev_attr_idle_timeout,
231 &dev_attr_sniff_max_interval,
232 &dev_attr_sniff_min_interval,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233 NULL
234};
235
Marcel Holtmannb219e3a2006-07-06 12:38:46 +0200236static ssize_t show_conn_type(struct device *dev, struct device_attribute *attr, char *buf)
237{
238 struct hci_conn *conn = dev_get_drvdata(dev);
239 return sprintf(buf, "%s\n", conn->type == ACL_LINK ? "ACL" : "SCO");
240}
241
242static ssize_t show_conn_address(struct device *dev, struct device_attribute *attr, char *buf)
243{
244 struct hci_conn *conn = dev_get_drvdata(dev);
245 bdaddr_t bdaddr;
246 baswap(&bdaddr, &conn->dst);
247 return sprintf(buf, "%s\n", batostr(&bdaddr));
248}
249
250#define CONN_ATTR(_name,_mode,_show,_store) \
251struct device_attribute conn_attr_##_name = __ATTR(_name,_mode,_show,_store)
252
253static CONN_ATTR(type, S_IRUGO, show_conn_type, NULL);
254static CONN_ATTR(address, S_IRUGO, show_conn_address, NULL);
255
256static struct device_attribute *conn_attrs[] = {
257 &conn_attr_type,
258 &conn_attr_address,
259 NULL
260};
261
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200262struct class *bt_class = NULL;
Marcel Holtmannbe9d1222005-11-08 09:57:38 -0800263EXPORT_SYMBOL_GPL(bt_class);
264
Marcel Holtmann27d35282006-07-03 10:02:37 +0200265static struct bus_type bt_bus = {
266 .name = "bluetooth",
267};
268
269static struct platform_device *bt_platform;
270
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200271static void bt_release(struct device *dev)
272{
Marcel Holtmannb219e3a2006-07-06 12:38:46 +0200273 void *data = dev_get_drvdata(dev);
274 kfree(data);
275}
276
David Howellsc4028952006-11-22 14:57:56 +0000277static void add_conn(struct work_struct *work)
Marcel Holtmannb219e3a2006-07-06 12:38:46 +0200278{
David Howellsc4028952006-11-22 14:57:56 +0000279 struct hci_conn *conn = container_of(work, struct hci_conn, work);
Marcel Holtmannb219e3a2006-07-06 12:38:46 +0200280 int i;
281
Marcel Holtmannc8937792007-01-08 02:16:38 +0100282 if (device_add(&conn->dev) < 0) {
Marcel Holtmanndf5c37e2006-10-15 17:30:45 +0200283 BT_ERR("Failed to register connection device");
284 return;
285 }
Marcel Holtmannb219e3a2006-07-06 12:38:46 +0200286
287 for (i = 0; conn_attrs[i]; i++)
Marcel Holtmanndf5c37e2006-10-15 17:30:45 +0200288 if (device_create_file(&conn->dev, conn_attrs[i]) < 0)
289 BT_ERR("Failed to create connection attribute");
Marcel Holtmannb219e3a2006-07-06 12:38:46 +0200290}
291
292void hci_conn_add_sysfs(struct hci_conn *conn)
293{
294 struct hci_dev *hdev = conn->hdev;
295 bdaddr_t *ba = &conn->dst;
296
297 BT_DBG("conn %p", conn);
298
Marcel Holtmanne52726d2006-11-18 22:14:05 +0100299 conn->dev.bus = &bt_bus;
300 conn->dev.parent = &hdev->dev;
301
Marcel Holtmannb219e3a2006-07-06 12:38:46 +0200302 conn->dev.release = bt_release;
303
304 snprintf(conn->dev.bus_id, BUS_ID_SIZE,
305 "%s%2.2X%2.2X%2.2X%2.2X%2.2X%2.2X",
306 conn->type == ACL_LINK ? "acl" : "sco",
307 ba->b[5], ba->b[4], ba->b[3],
308 ba->b[2], ba->b[1], ba->b[0]);
309
310 dev_set_drvdata(&conn->dev, conn);
311
Marcel Holtmannc8937792007-01-08 02:16:38 +0100312 device_initialize(&conn->dev);
313
David Howellsc4028952006-11-22 14:57:56 +0000314 INIT_WORK(&conn->work, add_conn);
Marcel Holtmannb219e3a2006-07-06 12:38:46 +0200315
316 schedule_work(&conn->work);
317}
318
Dave Youngacea6852008-01-21 22:35:21 -0800319static int __match_tty(struct device *dev, void *data)
320{
321 /* The rfcomm tty device will possibly retain even when conn
322 * is down, and sysfs doesn't support move zombie device,
323 * so we should move the device before conn device is destroyed.
324 * Due to the only child device of hci_conn dev is rfcomm
325 * tty_dev, here just return 1
326 */
327 return 1;
328}
329
David Howellsc4028952006-11-22 14:57:56 +0000330static void del_conn(struct work_struct *work)
Marcel Holtmannb219e3a2006-07-06 12:38:46 +0200331{
Dave Youngacea6852008-01-21 22:35:21 -0800332 struct device *dev;
David Howellsc4028952006-11-22 14:57:56 +0000333 struct hci_conn *conn = container_of(work, struct hci_conn, work);
Dave Youngacea6852008-01-21 22:35:21 -0800334
335 while (dev = device_find_child(&conn->dev, NULL, __match_tty)) {
336 device_move(dev, NULL);
337 put_device(dev);
338 }
Marcel Holtmannb219e3a2006-07-06 12:38:46 +0200339 device_del(&conn->dev);
Dave Young38b7da02007-12-29 19:17:47 -0800340 put_device(&conn->dev);
Marcel Holtmannb219e3a2006-07-06 12:38:46 +0200341}
342
343void hci_conn_del_sysfs(struct hci_conn *conn)
344{
345 BT_DBG("conn %p", conn);
346
Marcel Holtmannc8937792007-01-08 02:16:38 +0100347 if (!device_is_registered(&conn->dev))
348 return;
349
David Howellsc4028952006-11-22 14:57:56 +0000350 INIT_WORK(&conn->work, del_conn);
Marcel Holtmannb219e3a2006-07-06 12:38:46 +0200351
352 schedule_work(&conn->work);
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200353}
354
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355int hci_register_sysfs(struct hci_dev *hdev)
356{
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200357 struct device *dev = &hdev->dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358 unsigned int i;
359 int err;
360
361 BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type);
362
Marcel Holtmann53c1d4b2007-05-05 00:36:03 +0200363 dev->bus = &bt_bus;
Marcel Holtmanne9c4bec2006-10-15 17:30:50 +0200364 dev->parent = hdev->parent;
Marcel Holtmann27d35282006-07-03 10:02:37 +0200365
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200366 strlcpy(dev->bus_id, hdev->name, BUS_ID_SIZE);
Marcel Holtmann27d35282006-07-03 10:02:37 +0200367
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200368 dev->release = bt_release;
369
370 dev_set_drvdata(dev, hdev);
371
372 err = device_register(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373 if (err < 0)
374 return err;
375
376 for (i = 0; bt_attrs[i]; i++)
Marcel Holtmanndf5c37e2006-10-15 17:30:45 +0200377 if (device_create_file(dev, bt_attrs[i]) < 0)
378 BT_ERR("Failed to create device attribute");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379
Linus Torvaldsd12db0b2007-05-07 17:32:08 -0700380 if (sysfs_create_link(&bt_class->subsys.kobj,
Marcel Holtmann53c1d4b2007-05-05 00:36:03 +0200381 &dev->kobj, kobject_name(&dev->kobj)) < 0)
382 BT_ERR("Failed to create class symlink");
383
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384 return 0;
385}
386
387void hci_unregister_sysfs(struct hci_dev *hdev)
388{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389 BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type);
390
Linus Torvaldsd12db0b2007-05-07 17:32:08 -0700391 sysfs_remove_link(&bt_class->subsys.kobj,
Marcel Holtmann53c1d4b2007-05-05 00:36:03 +0200392 kobject_name(&hdev->dev.kobj));
393
Marcel Holtmann4d0eb002006-07-06 12:34:41 +0200394 device_del(&hdev->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395}
396
397int __init bt_sysfs_init(void)
398{
Marcel Holtmann27d35282006-07-03 10:02:37 +0200399 int err;
400
401 bt_platform = platform_device_register_simple("bluetooth", -1, NULL, 0);
402 if (IS_ERR(bt_platform))
403 return PTR_ERR(bt_platform);
404
405 err = bus_register(&bt_bus);
406 if (err < 0) {
407 platform_device_unregister(bt_platform);
408 return err;
409 }
410
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200411 bt_class = class_create(THIS_MODULE, "bluetooth");
412 if (IS_ERR(bt_class)) {
Marcel Holtmann27d35282006-07-03 10:02:37 +0200413 bus_unregister(&bt_bus);
414 platform_device_unregister(bt_platform);
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200415 return PTR_ERR(bt_class);
Marcel Holtmann27d35282006-07-03 10:02:37 +0200416 }
417
418 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700419}
420
Arnaud Patard860e13b2006-09-28 15:29:37 -0700421void bt_sysfs_cleanup(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422{
Marcel Holtmanna91f2e32006-07-03 10:02:41 +0200423 class_destroy(bt_class);
Marcel Holtmann27d35282006-07-03 10:02:37 +0200424
425 bus_unregister(&bt_bus);
426
427 platform_device_unregister(bt_platform);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428}