blob: 3ff229b2e7f3746880a2db4deec9141d7d297a56 [file] [log] [blame]
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
Takashi Iwaic7c999c2016-04-14 17:32:19 +020053 struct mutex open_mutex;
Marcel Holtmann23424c02013-09-02 10:41:39 -070054 struct delayed_work open_timeout;
Marcel Holtmann4aa769b2005-08-09 20:27:37 -070055};
56
Marcel Holtmann4aa769b2005-08-09 20:27:37 -070057static int vhci_open_dev(struct hci_dev *hdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -070058{
Linus Torvalds1da177e2005-04-16 15:20:36 -070059 return 0;
60}
61
Marcel Holtmann4aa769b2005-08-09 20:27:37 -070062static int vhci_close_dev(struct hci_dev *hdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -070063{
David Herrmann155961e2012-02-09 21:58:32 +010064 struct vhci_data *data = hci_get_drvdata(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -070065
Marcel Holtmann9c724352006-07-06 15:45:23 +020066 skb_queue_purge(&data->readq);
Marcel Holtmann4aa769b2005-08-09 20:27:37 -070067
Linus Torvalds1da177e2005-04-16 15:20:36 -070068 return 0;
69}
70
Marcel Holtmann4aa769b2005-08-09 20:27:37 -070071static int vhci_flush(struct hci_dev *hdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -070072{
David Herrmann155961e2012-02-09 21:58:32 +010073 struct vhci_data *data = hci_get_drvdata(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -070074
Marcel Holtmann9c724352006-07-06 15:45:23 +020075 skb_queue_purge(&data->readq);
Linus Torvalds1da177e2005-04-16 15:20:36 -070076
Marcel Holtmann4aa769b2005-08-09 20:27:37 -070077 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -070078}
79
Marcel Holtmann7bd8f092013-10-11 06:19:18 -070080static int vhci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
Linus Torvalds1da177e2005-04-16 15:20:36 -070081{
Marcel Holtmann60298772013-10-11 07:01:04 -070082 struct vhci_data *data = hci_get_drvdata(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -070083
Marcel Holtmann618e8bc2015-11-05 07:33:56 +010084 memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1);
Marcel Holtmann9c724352006-07-06 15:45:23 +020085 skb_queue_tail(&data->readq, skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -070086
Marcel Holtmann9c724352006-07-06 15:45:23 +020087 wake_up_interruptible(&data->read_wait);
Marcel Holtmann23424c02013-09-02 10:41:39 -070088 return 0;
89}
Linus Torvalds1da177e2005-04-16 15:20:36 -070090
Takashi Iwaic7c999c2016-04-14 17:32:19 +020091static int __vhci_create_device(struct vhci_data *data, __u8 opcode)
Marcel Holtmann23424c02013-09-02 10:41:39 -070092{
93 struct hci_dev *hdev;
94 struct sk_buff *skb;
Marcel Holtmann82a30cf2014-07-03 01:35:10 +020095 __u8 dev_type;
96
Takashi Iwaic7c999c2016-04-14 17:32:19 +020097 if (data->hdev)
98 return -EBADFD;
99
Marcel Holtmannca8bee52016-07-05 14:30:14 +0200100 /* bits 0-1 are dev_type (Primary or AMP) */
Marcel Holtmann82a30cf2014-07-03 01:35:10 +0200101 dev_type = opcode & 0x03;
102
Marcel Holtmannca8bee52016-07-05 14:30:14 +0200103 if (dev_type != HCI_PRIMARY && dev_type != HCI_AMP)
Marcel Holtmann82a30cf2014-07-03 01:35:10 +0200104 return -EINVAL;
105
Marcel Holtmann0ad184e2014-07-04 17:23:35 +0200106 /* bits 2-5 are reserved (must be zero) */
107 if (opcode & 0x3c)
Marcel Holtmann82a30cf2014-07-03 01:35:10 +0200108 return -EINVAL;
Marcel Holtmann23424c02013-09-02 10:41:39 -0700109
110 skb = bt_skb_alloc(4, GFP_KERNEL);
111 if (!skb)
112 return -ENOMEM;
113
114 hdev = hci_alloc_dev();
115 if (!hdev) {
116 kfree_skb(skb);
117 return -ENOMEM;
118 }
119
120 data->hdev = hdev;
121
122 hdev->bus = HCI_VIRTUAL;
123 hdev->dev_type = dev_type;
124 hci_set_drvdata(hdev, data);
125
126 hdev->open = vhci_open_dev;
127 hdev->close = vhci_close_dev;
128 hdev->flush = vhci_flush;
129 hdev->send = vhci_send_frame;
130
Marcel Holtmann0ad184e2014-07-04 17:23:35 +0200131 /* bit 6 is for external configuration */
132 if (opcode & 0x40)
133 set_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks);
134
Marcel Holtmann82a30cf2014-07-03 01:35:10 +0200135 /* bit 7 is for raw device */
136 if (opcode & 0x80)
137 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
138
Marcel Holtmann23424c02013-09-02 10:41:39 -0700139 if (hci_register_dev(hdev) < 0) {
140 BT_ERR("Can't register HCI device");
141 hci_free_dev(hdev);
142 data->hdev = NULL;
143 kfree_skb(skb);
144 return -EBUSY;
145 }
146
Marcel Holtmann618e8bc2015-11-05 07:33:56 +0100147 hci_skb_pkt_type(skb) = HCI_VENDOR_PKT;
Marcel Holtmann23424c02013-09-02 10:41:39 -0700148
149 *skb_put(skb, 1) = 0xff;
Marcel Holtmann82a30cf2014-07-03 01:35:10 +0200150 *skb_put(skb, 1) = opcode;
Marcel Holtmann23424c02013-09-02 10:41:39 -0700151 put_unaligned_le16(hdev->id, skb_put(skb, 2));
152 skb_queue_tail(&data->readq, skb);
153
154 wake_up_interruptible(&data->read_wait);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155 return 0;
156}
157
Takashi Iwaic7c999c2016-04-14 17:32:19 +0200158static int vhci_create_device(struct vhci_data *data, __u8 opcode)
159{
160 int err;
161
162 mutex_lock(&data->open_mutex);
163 err = __vhci_create_device(data, opcode);
164 mutex_unlock(&data->open_mutex);
165
166 return err;
167}
168
Marcel Holtmann9c724352006-07-06 15:45:23 +0200169static inline ssize_t vhci_get_user(struct vhci_data *data,
Al Viro512b2262014-08-23 11:28:14 -0400170 struct iov_iter *from)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171{
Al Viro512b2262014-08-23 11:28:14 -0400172 size_t len = iov_iter_count(from);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173 struct sk_buff *skb;
Marcel Holtmann82a30cf2014-07-03 01:35:10 +0200174 __u8 pkt_type, opcode;
Marcel Holtmann23424c02013-09-02 10:41:39 -0700175 int ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176
Marcel Holtmann5bc00b52013-12-28 21:57:14 -0800177 if (len < 2 || len > HCI_MAX_FRAME_SIZE)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178 return -EINVAL;
179
Marcel Holtmann5bc00b52013-12-28 21:57:14 -0800180 skb = bt_skb_alloc(len, GFP_KERNEL);
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700181 if (!skb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182 return -ENOMEM;
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700183
Al Viro512b2262014-08-23 11:28:14 -0400184 if (copy_from_iter(skb_put(skb, len), len, from) != len) {
185 kfree_skb(skb);
186 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187 }
188
Marcel Holtmann23424c02013-09-02 10:41:39 -0700189 pkt_type = *((__u8 *) skb->data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190 skb_pull(skb, 1);
191
Marcel Holtmann23424c02013-09-02 10:41:39 -0700192 switch (pkt_type) {
193 case HCI_EVENT_PKT:
194 case HCI_ACLDATA_PKT:
195 case HCI_SCODATA_PKT:
196 if (!data->hdev) {
197 kfree_skb(skb);
198 return -ENODEV;
199 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200
Marcel Holtmann618e8bc2015-11-05 07:33:56 +0100201 hci_skb_pkt_type(skb) = pkt_type;
Marcel Holtmann23424c02013-09-02 10:41:39 -0700202
Marcel Holtmanne1a26172013-10-10 16:52:43 -0700203 ret = hci_recv_frame(data->hdev, skb);
Marcel Holtmann23424c02013-09-02 10:41:39 -0700204 break;
205
206 case HCI_VENDOR_PKT:
Jiri Slaby373a32c2016-03-19 11:05:18 +0100207 cancel_delayed_work_sync(&data->open_timeout);
208
Marcel Holtmann82a30cf2014-07-03 01:35:10 +0200209 opcode = *((__u8 *) skb->data);
Marcel Holtmann23424c02013-09-02 10:41:39 -0700210 skb_pull(skb, 1);
211
212 if (skb->len > 0) {
213 kfree_skb(skb);
214 return -EINVAL;
215 }
216
217 kfree_skb(skb);
218
Marcel Holtmann82a30cf2014-07-03 01:35:10 +0200219 ret = vhci_create_device(data, opcode);
Marcel Holtmann23424c02013-09-02 10:41:39 -0700220 break;
221
222 default:
223 kfree_skb(skb);
224 return -EINVAL;
225 }
226
Marcel Holtmann5bc00b52013-12-28 21:57:14 -0800227 return (ret < 0) ? ret : len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228}
229
Marcel Holtmann9c724352006-07-06 15:45:23 +0200230static inline ssize_t vhci_put_user(struct vhci_data *data,
Marcel Holtmann23424c02013-09-02 10:41:39 -0700231 struct sk_buff *skb,
232 char __user *buf, int count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234 char __user *ptr = buf;
Marcel Holtmann23424c02013-09-02 10:41:39 -0700235 int len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700237 len = min_t(unsigned int, skb->len, count);
238
Linus Torvalds1da177e2005-04-16 15:20:36 -0700239 if (copy_to_user(ptr, skb->data, len))
240 return -EFAULT;
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700241
Marcel Holtmann23424c02013-09-02 10:41:39 -0700242 if (!data->hdev)
243 return len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244
Marcel Holtmann9c724352006-07-06 15:45:23 +0200245 data->hdev->stat.byte_tx += len;
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700246
Marcel Holtmann618e8bc2015-11-05 07:33:56 +0100247 switch (hci_skb_pkt_type(skb)) {
Marcel Holtmann0d48d932005-08-09 20:30:28 -0700248 case HCI_COMMAND_PKT:
Marcel Holtmann9c724352006-07-06 15:45:23 +0200249 data->hdev->stat.cmd_tx++;
Marcel Holtmann0d48d932005-08-09 20:30:28 -0700250 break;
Marcel Holtmann0d48d932005-08-09 20:30:28 -0700251 case HCI_ACLDATA_PKT:
Marcel Holtmann9c724352006-07-06 15:45:23 +0200252 data->hdev->stat.acl_tx++;
Marcel Holtmann0d48d932005-08-09 20:30:28 -0700253 break;
Marcel Holtmann0d48d932005-08-09 20:30:28 -0700254 case HCI_SCODATA_PKT:
Gustavo F. Padovan4f7ac182010-05-01 16:15:34 -0300255 data->hdev->stat.sco_tx++;
Marcel Holtmann0d48d932005-08-09 20:30:28 -0700256 break;
Peter Senna Tschudin2c24d452012-09-07 17:24:47 +0200257 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258
Marcel Holtmann23424c02013-09-02 10:41:39 -0700259 return len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700260}
261
Marcel Holtmann9c724352006-07-06 15:45:23 +0200262static ssize_t vhci_read(struct file *file,
Marcel Holtmann23424c02013-09-02 10:41:39 -0700263 char __user *buf, size_t count, loff_t *pos)
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700264{
Marcel Holtmann9c724352006-07-06 15:45:23 +0200265 struct vhci_data *data = file->private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266 struct sk_buff *skb;
267 ssize_t ret = 0;
268
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 while (count) {
Marcel Holtmann9c724352006-07-06 15:45:23 +0200270 skb = skb_dequeue(&data->readq);
Marcel Holtmann4db75892009-06-08 14:13:57 +0200271 if (skb) {
272 ret = vhci_put_user(data, skb, buf, count);
273 if (ret < 0)
274 skb_queue_head(&data->readq, skb);
275 else
276 kfree_skb(skb);
277 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278 }
279
Marcel Holtmann4db75892009-06-08 14:13:57 +0200280 if (file->f_flags & O_NONBLOCK) {
281 ret = -EAGAIN;
282 break;
283 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284
Marcel Holtmann4db75892009-06-08 14:13:57 +0200285 ret = wait_event_interruptible(data->read_wait,
Marcel Holtmann23424c02013-09-02 10:41:39 -0700286 !skb_queue_empty(&data->readq));
Marcel Holtmann4db75892009-06-08 14:13:57 +0200287 if (ret < 0)
288 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290
291 return ret;
292}
293
Al Viro512b2262014-08-23 11:28:14 -0400294static ssize_t vhci_write(struct kiocb *iocb, struct iov_iter *from)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295{
Marcel Holtmann5bc00b52013-12-28 21:57:14 -0800296 struct file *file = iocb->ki_filp;
Marcel Holtmann9c724352006-07-06 15:45:23 +0200297 struct vhci_data *data = file->private_data;
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700298
Al Viro512b2262014-08-23 11:28:14 -0400299 return vhci_get_user(data, from);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300}
301
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700302static unsigned int vhci_poll(struct file *file, poll_table *wait)
303{
Marcel Holtmann9c724352006-07-06 15:45:23 +0200304 struct vhci_data *data = file->private_data;
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700305
Marcel Holtmann9c724352006-07-06 15:45:23 +0200306 poll_wait(file, &data->read_wait, wait);
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700307
Marcel Holtmann9c724352006-07-06 15:45:23 +0200308 if (!skb_queue_empty(&data->readq))
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700309 return POLLIN | POLLRDNORM;
310
311 return POLLOUT | POLLWRNORM;
312}
313
Marcel Holtmann23424c02013-09-02 10:41:39 -0700314static void vhci_open_timeout(struct work_struct *work)
315{
316 struct vhci_data *data = container_of(work, struct vhci_data,
317 open_timeout.work);
318
Marcel Holtmannca8bee52016-07-05 14:30:14 +0200319 vhci_create_device(data, amp ? HCI_AMP : HCI_PRIMARY);
Marcel Holtmann23424c02013-09-02 10:41:39 -0700320}
321
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700322static int vhci_open(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323{
Marcel Holtmann9c724352006-07-06 15:45:23 +0200324 struct vhci_data *data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700325
Marcel Holtmann9c724352006-07-06 15:45:23 +0200326 data = kzalloc(sizeof(struct vhci_data), GFP_KERNEL);
327 if (!data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328 return -ENOMEM;
329
Marcel Holtmann9c724352006-07-06 15:45:23 +0200330 skb_queue_head_init(&data->readq);
331 init_waitqueue_head(&data->read_wait);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700332
Takashi Iwaic7c999c2016-04-14 17:32:19 +0200333 mutex_init(&data->open_mutex);
Marcel Holtmann23424c02013-09-02 10:41:39 -0700334 INIT_DELAYED_WORK(&data->open_timeout, vhci_open_timeout);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700335
Marcel Holtmann9c724352006-07-06 15:45:23 +0200336 file->private_data = data;
David Herrmann0dea0142012-03-28 11:48:42 +0200337 nonseekable_open(inode, file);
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700338
Marcel Holtmann23424c02013-09-02 10:41:39 -0700339 schedule_delayed_work(&data->open_timeout, msecs_to_jiffies(1000));
340
David Herrmann0dea0142012-03-28 11:48:42 +0200341 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342}
343
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700344static int vhci_release(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345{
Marcel Holtmann9c724352006-07-06 15:45:23 +0200346 struct vhci_data *data = file->private_data;
Jiri Slaby373a32c2016-03-19 11:05:18 +0100347 struct hci_dev *hdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348
Marcel Holtmann23424c02013-09-02 10:41:39 -0700349 cancel_delayed_work_sync(&data->open_timeout);
350
Jiri Slaby373a32c2016-03-19 11:05:18 +0100351 hdev = data->hdev;
352
Marcel Holtmann23424c02013-09-02 10:41:39 -0700353 if (hdev) {
354 hci_unregister_dev(hdev);
355 hci_free_dev(hdev);
356 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357
Jiri Slaby13407372016-03-19 11:49:43 +0100358 skb_queue_purge(&data->readq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359 file->private_data = NULL;
David Herrmannbf18c712012-01-07 15:47:14 +0100360 kfree(data);
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700361
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362 return 0;
363}
364
Arjan van de Ven2b8693c2007-02-12 00:55:32 -0800365static const struct file_operations vhci_fops = {
Marcel Holtmannfed4c252009-12-03 18:07:28 +0100366 .owner = THIS_MODULE,
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700367 .read = vhci_read,
Al Viro512b2262014-08-23 11:28:14 -0400368 .write_iter = vhci_write,
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700369 .poll = vhci_poll,
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700370 .open = vhci_open,
371 .release = vhci_release,
Arnd Bergmann6038f372010-08-15 18:52:59 +0200372 .llseek = no_llseek,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373};
374
Prasanna Karthik4eeab592015-06-02 10:50:15 +0000375static struct miscdevice vhci_miscdev = {
Marcel Holtmannac284942009-06-07 18:09:57 +0200376 .name = "vhci",
377 .fops = &vhci_fops,
Lucas De Marchib075dd42014-02-18 02:19:26 -0300378 .minor = VHCI_MINOR,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379};
380
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700381static int __init vhci_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700382{
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700383 BT_INFO("Virtual HCI driver ver %s", VERSION);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384
Marcel Holtmann329ab1b2009-12-03 18:05:16 +0100385 return misc_register(&vhci_miscdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386}
387
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700388static void __exit vhci_exit(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389{
Marcel Holtmann329ab1b2009-12-03 18:05:16 +0100390 misc_deregister(&vhci_miscdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700391}
392
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700393module_init(vhci_init);
394module_exit(vhci_exit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395
Andrei Emeltchenko36acbb12011-11-14 12:42:48 +0200396module_param(amp, bool, 0644);
397MODULE_PARM_DESC(amp, "Create AMP controller device");
398
Marcel Holtmann63fbd242008-08-18 13:23:53 +0200399MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
Marcel Holtmann4aa769b2005-08-09 20:27:37 -0700400MODULE_DESCRIPTION("Bluetooth virtual HCI driver ver " VERSION);
401MODULE_VERSION(VERSION);
402MODULE_LICENSE("GPL");
Marcel Holtmannbfacbb92013-08-26 22:02:38 -0700403MODULE_ALIAS("devname:vhci");
Lucas De Marchib075dd42014-02-18 02:19:26 -0300404MODULE_ALIAS_MISCDEV(VHCI_MINOR);