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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 *
Marcel Holtmann4aa769b2005-08-09 20:27:37 -07003 * Bluetooth virtual HCI driver
4 *
Marcel Holtmann9c724352006-07-06 15:45:23 +02005 * Copyright (C) 2000-2001 Qualcomm Incorporated
6 * Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com>
7 * Copyright (C) 2004-2006 Marcel Holtmann <marcel@holtmann.org>
Marcel Holtmann4aa769b2005-08-09 20:27:37 -07008 *
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070024 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070025
Linus Torvalds1da177e2005-04-16 15:20:36 -070026#include <linux/module.h>
Marcel Holtmann23424c02013-09-02 10:41:39 -070027#include <asm/unaligned.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070028
Linus Torvalds1da177e2005-04-16 15:20:36 -070029#include <linux/kernel.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070030#include <linux/init.h>
Marcel Holtmann4aa769b2005-08-09 20:27:37 -070031#include <linux/slab.h>
32#include <linux/types.h>
33#include <linux/errno.h>
34#include <linux/sched.h>
35#include <linux/poll.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070036
37#include <linux/skbuff.h>
38#include <linux/miscdevice.h>
39
Linus Torvalds1da177e2005-04-16 15:20:36 -070040#include <net/bluetooth/bluetooth.h>
41#include <net/bluetooth/hci_core.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070042
Marcel Holtmann82a30cf2014-07-03 01:35:10 +020043#define VERSION "1.5"
Marcel Holtmann4aa769b2005-08-09 20:27:37 -070044
Andrei Emeltchenko36acbb12011-11-14 12:42:48 +020045static bool amp;
46
Marcel Holtmann4aa769b2005-08-09 20:27:37 -070047struct vhci_data {
48 struct hci_dev *hdev;
49
Marcel Holtmann4aa769b2005-08-09 20:27:37 -070050 wait_queue_head_t read_wait;
51 struct sk_buff_head readq;
Marcel Holtmann23424c02013-09-02 10:41:39 -070052
53 struct delayed_work open_timeout;
Marcel Holtmann4aa769b2005-08-09 20:27:37 -070054};
55
Marcel Holtmann4aa769b2005-08-09 20:27:37 -070056static int vhci_open_dev(struct hci_dev *hdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -070057{
58 set_bit(HCI_RUNNING, &hdev->flags);
Marcel Holtmann4aa769b2005-08-09 20:27:37 -070059
Linus Torvalds1da177e2005-04-16 15:20:36 -070060 return 0;
61}
62
Marcel Holtmann4aa769b2005-08-09 20:27:37 -070063static int vhci_close_dev(struct hci_dev *hdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -070064{
David Herrmann155961e2012-02-09 21:58:32 +010065 struct vhci_data *data = hci_get_drvdata(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -070066
Linus Torvalds1da177e2005-04-16 15:20:36 -070067 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
68 return 0;
69
Marcel Holtmann9c724352006-07-06 15:45:23 +020070 skb_queue_purge(&data->readq);
Marcel Holtmann4aa769b2005-08-09 20:27:37 -070071
Linus Torvalds1da177e2005-04-16 15:20:36 -070072 return 0;
73}
74
Marcel Holtmann4aa769b2005-08-09 20:27:37 -070075static int vhci_flush(struct hci_dev *hdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -070076{
David Herrmann155961e2012-02-09 21:58:32 +010077 struct vhci_data *data = hci_get_drvdata(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -070078
Marcel Holtmann9c724352006-07-06 15:45:23 +020079 skb_queue_purge(&data->readq);
Linus Torvalds1da177e2005-04-16 15:20:36 -070080
Marcel Holtmann4aa769b2005-08-09 20:27:37 -070081 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -070082}
83
Marcel Holtmann7bd8f092013-10-11 06:19:18 -070084static int vhci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
Linus Torvalds1da177e2005-04-16 15:20:36 -070085{
Marcel Holtmann60298772013-10-11 07:01:04 -070086 struct vhci_data *data = hci_get_drvdata(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -070087
88 if (!test_bit(HCI_RUNNING, &hdev->flags))
89 return -EBUSY;
90
Marcel Holtmann0d48d932005-08-09 20:30:28 -070091 memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
Marcel Holtmann9c724352006-07-06 15:45:23 +020092 skb_queue_tail(&data->readq, skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -070093
Marcel Holtmann9c724352006-07-06 15:45:23 +020094 wake_up_interruptible(&data->read_wait);
Marcel Holtmann23424c02013-09-02 10:41:39 -070095 return 0;
96}
Linus Torvalds1da177e2005-04-16 15:20:36 -070097
Marcel Holtmann82a30cf2014-07-03 01:35:10 +020098static int vhci_create_device(struct vhci_data *data, __u8 opcode)
Marcel Holtmann23424c02013-09-02 10:41:39 -070099{
100 struct hci_dev *hdev;
101 struct sk_buff *skb;
Marcel Holtmann82a30cf2014-07-03 01:35:10 +0200102 __u8 dev_type;
103
104 /* bits 0-1 are dev_type (BR/EDR or AMP) */
105 dev_type = opcode & 0x03;
106
107 if (dev_type != HCI_BREDR && dev_type != HCI_AMP)
108 return -EINVAL;
109
Marcel Holtmann0ad184e2014-07-04 17:23:35 +0200110 /* bits 2-5 are reserved (must be zero) */
111 if (opcode & 0x3c)
Marcel Holtmann82a30cf2014-07-03 01:35:10 +0200112 return -EINVAL;
Marcel Holtmann23424c02013-09-02 10:41:39 -0700113
114 skb = bt_skb_alloc(4, GFP_KERNEL);
115 if (!skb)
116 return -ENOMEM;
117
118 hdev = hci_alloc_dev();
119 if (!hdev) {
120 kfree_skb(skb);
121 return -ENOMEM;
122 }
123
124 data->hdev = hdev;
125
126 hdev->bus = HCI_VIRTUAL;
127 hdev->dev_type = dev_type;
128 hci_set_drvdata(hdev, data);
129
130 hdev->open = vhci_open_dev;
131 hdev->close = vhci_close_dev;
132 hdev->flush = vhci_flush;
133 hdev->send = vhci_send_frame;
134
Marcel Holtmann0ad184e2014-07-04 17:23:35 +0200135 /* bit 6 is for external configuration */
136 if (opcode & 0x40)
137 set_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks);
138
Marcel Holtmann82a30cf2014-07-03 01:35:10 +0200139 /* bit 7 is for raw device */
140 if (opcode & 0x80)
141 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
142
Marcel Holtmann23424c02013-09-02 10:41:39 -0700143 if (hci_register_dev(hdev) < 0) {
144 BT_ERR("Can't register HCI device");
145 hci_free_dev(hdev);
146 data->hdev = NULL;
147 kfree_skb(skb);
148 return -EBUSY;
149 }
150
151 bt_cb(skb)->pkt_type = HCI_VENDOR_PKT;
152
153 *skb_put(skb, 1) = 0xff;
Marcel Holtmann82a30cf2014-07-03 01:35:10 +0200154 *skb_put(skb, 1) = opcode;
Marcel Holtmann23424c02013-09-02 10:41:39 -0700155 put_unaligned_le16(hdev->id, skb_put(skb, 2));
156 skb_queue_tail(&data->readq, skb);
157
158 wake_up_interruptible(&data->read_wait);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159 return 0;
160}
161
Marcel Holtmann9c724352006-07-06 15:45:23 +0200162static inline ssize_t vhci_get_user(struct vhci_data *data,
Al Viro512b2262014-08-23 11:28:14 -0400163 struct iov_iter *from)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164{
Al Viro512b2262014-08-23 11:28:14 -0400165 size_t len = iov_iter_count(from);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166 struct sk_buff *skb;
Marcel Holtmann82a30cf2014-07-03 01:35:10 +0200167 __u8 pkt_type, opcode;
Marcel Holtmann23424c02013-09-02 10:41:39 -0700168 int ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169
Marcel Holtmann5bc00b52013-12-28 21:57:14 -0800170 if (len < 2 || len > HCI_MAX_FRAME_SIZE)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171 return -EINVAL;
172
Marcel Holtmann5bc00b52013-12-28 21:57:14 -0800173 skb = bt_skb_alloc(len, GFP_KERNEL);
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700174 if (!skb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175 return -ENOMEM;
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700176
Al Viro512b2262014-08-23 11:28:14 -0400177 if (copy_from_iter(skb_put(skb, len), len, from) != len) {
178 kfree_skb(skb);
179 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180 }
181
Marcel Holtmann23424c02013-09-02 10:41:39 -0700182 pkt_type = *((__u8 *) skb->data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183 skb_pull(skb, 1);
184
Marcel Holtmann23424c02013-09-02 10:41:39 -0700185 switch (pkt_type) {
186 case HCI_EVENT_PKT:
187 case HCI_ACLDATA_PKT:
188 case HCI_SCODATA_PKT:
189 if (!data->hdev) {
190 kfree_skb(skb);
191 return -ENODEV;
192 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193
Marcel Holtmann23424c02013-09-02 10:41:39 -0700194 bt_cb(skb)->pkt_type = pkt_type;
195
Marcel Holtmanne1a26172013-10-10 16:52:43 -0700196 ret = hci_recv_frame(data->hdev, skb);
Marcel Holtmann23424c02013-09-02 10:41:39 -0700197 break;
198
199 case HCI_VENDOR_PKT:
200 if (data->hdev) {
201 kfree_skb(skb);
202 return -EBADFD;
203 }
204
205 cancel_delayed_work_sync(&data->open_timeout);
206
Marcel Holtmann82a30cf2014-07-03 01:35:10 +0200207 opcode = *((__u8 *) skb->data);
Marcel Holtmann23424c02013-09-02 10:41:39 -0700208 skb_pull(skb, 1);
209
210 if (skb->len > 0) {
211 kfree_skb(skb);
212 return -EINVAL;
213 }
214
215 kfree_skb(skb);
216
Marcel Holtmann82a30cf2014-07-03 01:35:10 +0200217 ret = vhci_create_device(data, opcode);
Marcel Holtmann23424c02013-09-02 10:41:39 -0700218 break;
219
220 default:
221 kfree_skb(skb);
222 return -EINVAL;
223 }
224
Marcel Holtmann5bc00b52013-12-28 21:57:14 -0800225 return (ret < 0) ? ret : len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226}
227
Marcel Holtmann9c724352006-07-06 15:45:23 +0200228static inline ssize_t vhci_put_user(struct vhci_data *data,
Marcel Holtmann23424c02013-09-02 10:41:39 -0700229 struct sk_buff *skb,
230 char __user *buf, int count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700231{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232 char __user *ptr = buf;
Marcel Holtmann23424c02013-09-02 10:41:39 -0700233 int len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700235 len = min_t(unsigned int, skb->len, count);
236
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237 if (copy_to_user(ptr, skb->data, len))
238 return -EFAULT;
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700239
Marcel Holtmann23424c02013-09-02 10:41:39 -0700240 if (!data->hdev)
241 return len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242
Marcel Holtmann9c724352006-07-06 15:45:23 +0200243 data->hdev->stat.byte_tx += len;
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700244
Marcel Holtmann0d48d932005-08-09 20:30:28 -0700245 switch (bt_cb(skb)->pkt_type) {
246 case HCI_COMMAND_PKT:
Marcel Holtmann9c724352006-07-06 15:45:23 +0200247 data->hdev->stat.cmd_tx++;
Marcel Holtmann0d48d932005-08-09 20:30:28 -0700248 break;
Marcel Holtmann0d48d932005-08-09 20:30:28 -0700249 case HCI_ACLDATA_PKT:
Marcel Holtmann9c724352006-07-06 15:45:23 +0200250 data->hdev->stat.acl_tx++;
Marcel Holtmann0d48d932005-08-09 20:30:28 -0700251 break;
Marcel Holtmann0d48d932005-08-09 20:30:28 -0700252 case HCI_SCODATA_PKT:
Gustavo F. Padovan4f7ac182010-05-01 16:15:34 -0300253 data->hdev->stat.sco_tx++;
Marcel Holtmann0d48d932005-08-09 20:30:28 -0700254 break;
Peter Senna Tschudin2c24d452012-09-07 17:24:47 +0200255 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256
Marcel Holtmann23424c02013-09-02 10:41:39 -0700257 return len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258}
259
Marcel Holtmann9c724352006-07-06 15:45:23 +0200260static ssize_t vhci_read(struct file *file,
Marcel Holtmann23424c02013-09-02 10:41:39 -0700261 char __user *buf, size_t count, loff_t *pos)
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700262{
Marcel Holtmann9c724352006-07-06 15:45:23 +0200263 struct vhci_data *data = file->private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264 struct sk_buff *skb;
265 ssize_t ret = 0;
266
Linus Torvalds1da177e2005-04-16 15:20:36 -0700267 while (count) {
Marcel Holtmann9c724352006-07-06 15:45:23 +0200268 skb = skb_dequeue(&data->readq);
Marcel Holtmann4db75892009-06-08 14:13:57 +0200269 if (skb) {
270 ret = vhci_put_user(data, skb, buf, count);
271 if (ret < 0)
272 skb_queue_head(&data->readq, skb);
273 else
274 kfree_skb(skb);
275 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276 }
277
Marcel Holtmann4db75892009-06-08 14:13:57 +0200278 if (file->f_flags & O_NONBLOCK) {
279 ret = -EAGAIN;
280 break;
281 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282
Marcel Holtmann4db75892009-06-08 14:13:57 +0200283 ret = wait_event_interruptible(data->read_wait,
Marcel Holtmann23424c02013-09-02 10:41:39 -0700284 !skb_queue_empty(&data->readq));
Marcel Holtmann4db75892009-06-08 14:13:57 +0200285 if (ret < 0)
286 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288
289 return ret;
290}
291
Al Viro512b2262014-08-23 11:28:14 -0400292static ssize_t vhci_write(struct kiocb *iocb, struct iov_iter *from)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293{
Marcel Holtmann5bc00b52013-12-28 21:57:14 -0800294 struct file *file = iocb->ki_filp;
Marcel Holtmann9c724352006-07-06 15:45:23 +0200295 struct vhci_data *data = file->private_data;
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700296
Al Viro512b2262014-08-23 11:28:14 -0400297 return vhci_get_user(data, from);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298}
299
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700300static unsigned int vhci_poll(struct file *file, poll_table *wait)
301{
Marcel Holtmann9c724352006-07-06 15:45:23 +0200302 struct vhci_data *data = file->private_data;
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700303
Marcel Holtmann9c724352006-07-06 15:45:23 +0200304 poll_wait(file, &data->read_wait, wait);
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700305
Marcel Holtmann9c724352006-07-06 15:45:23 +0200306 if (!skb_queue_empty(&data->readq))
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700307 return POLLIN | POLLRDNORM;
308
309 return POLLOUT | POLLWRNORM;
310}
311
Marcel Holtmann23424c02013-09-02 10:41:39 -0700312static void vhci_open_timeout(struct work_struct *work)
313{
314 struct vhci_data *data = container_of(work, struct vhci_data,
315 open_timeout.work);
316
317 vhci_create_device(data, amp ? HCI_AMP : HCI_BREDR);
318}
319
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700320static int vhci_open(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700321{
Marcel Holtmann9c724352006-07-06 15:45:23 +0200322 struct vhci_data *data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323
Marcel Holtmann9c724352006-07-06 15:45:23 +0200324 data = kzalloc(sizeof(struct vhci_data), GFP_KERNEL);
325 if (!data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326 return -ENOMEM;
327
Marcel Holtmann9c724352006-07-06 15:45:23 +0200328 skb_queue_head_init(&data->readq);
329 init_waitqueue_head(&data->read_wait);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330
Marcel Holtmann23424c02013-09-02 10:41:39 -0700331 INIT_DELAYED_WORK(&data->open_timeout, vhci_open_timeout);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700332
Marcel Holtmann9c724352006-07-06 15:45:23 +0200333 file->private_data = data;
David Herrmann0dea0142012-03-28 11:48:42 +0200334 nonseekable_open(inode, file);
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700335
Marcel Holtmann23424c02013-09-02 10:41:39 -0700336 schedule_delayed_work(&data->open_timeout, msecs_to_jiffies(1000));
337
David Herrmann0dea0142012-03-28 11:48:42 +0200338 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339}
340
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700341static int vhci_release(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342{
Marcel Holtmann9c724352006-07-06 15:45:23 +0200343 struct vhci_data *data = file->private_data;
344 struct hci_dev *hdev = data->hdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345
Marcel Holtmann23424c02013-09-02 10:41:39 -0700346 cancel_delayed_work_sync(&data->open_timeout);
347
348 if (hdev) {
349 hci_unregister_dev(hdev);
350 hci_free_dev(hdev);
351 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352
353 file->private_data = NULL;
David Herrmannbf18c712012-01-07 15:47:14 +0100354 kfree(data);
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700355
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356 return 0;
357}
358
Arjan van de Ven2b8693c2007-02-12 00:55:32 -0800359static const struct file_operations vhci_fops = {
Marcel Holtmannfed4c252009-12-03 18:07:28 +0100360 .owner = THIS_MODULE,
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700361 .read = vhci_read,
Al Viro512b2262014-08-23 11:28:14 -0400362 .write_iter = vhci_write,
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700363 .poll = vhci_poll,
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700364 .open = vhci_open,
365 .release = vhci_release,
Arnd Bergmann6038f372010-08-15 18:52:59 +0200366 .llseek = no_llseek,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367};
368
Prasanna Karthik4eeab592015-06-02 10:50:15 +0000369static struct miscdevice vhci_miscdev = {
Marcel Holtmannac284942009-06-07 18:09:57 +0200370 .name = "vhci",
371 .fops = &vhci_fops,
Lucas De Marchib075dd42014-02-18 02:19:26 -0300372 .minor = VHCI_MINOR,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373};
374
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700375static int __init vhci_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376{
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700377 BT_INFO("Virtual HCI driver ver %s", VERSION);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378
Marcel Holtmann329ab1b2009-12-03 18:05:16 +0100379 return misc_register(&vhci_miscdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380}
381
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700382static void __exit vhci_exit(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383{
Marcel Holtmann329ab1b2009-12-03 18:05:16 +0100384 misc_deregister(&vhci_miscdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385}
386
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700387module_init(vhci_init);
388module_exit(vhci_exit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389
Andrei Emeltchenko36acbb12011-11-14 12:42:48 +0200390module_param(amp, bool, 0644);
391MODULE_PARM_DESC(amp, "Create AMP controller device");
392
Marcel Holtmann63fbd242008-08-18 13:23:53 +0200393MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700394MODULE_DESCRIPTION("Bluetooth virtual HCI driver ver " VERSION);
395MODULE_VERSION(VERSION);
396MODULE_LICENSE("GPL");
Marcel Holtmannbfacbb92013-08-26 22:02:38 -0700397MODULE_ALIAS("devname:vhci");
Lucas De Marchib075dd42014-02-18 02:19:26 -0300398MODULE_ALIAS_MISCDEV(VHCI_MINOR);