Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 3 | * Bluetooth virtual HCI driver |
| 4 | * |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 5 | * 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 Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 8 | * |
| 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include <linux/module.h> |
| 27 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include <linux/kernel.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #include <linux/init.h> |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 30 | #include <linux/slab.h> |
| 31 | #include <linux/types.h> |
| 32 | #include <linux/errno.h> |
| 33 | #include <linux/sched.h> |
| 34 | #include <linux/poll.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | |
| 36 | #include <linux/skbuff.h> |
| 37 | #include <linux/miscdevice.h> |
| 38 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | #include <net/bluetooth/bluetooth.h> |
| 40 | #include <net/bluetooth/hci_core.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | |
Marcel Holtmann | ac28494 | 2009-06-07 18:09:57 +0200 | [diff] [blame] | 42 | #define VERSION "1.3" |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 43 | |
| 44 | static int minor = MISC_DYNAMIC_MINOR; |
| 45 | |
| 46 | struct vhci_data { |
| 47 | struct hci_dev *hdev; |
| 48 | |
| 49 | unsigned long flags; |
| 50 | |
| 51 | wait_queue_head_t read_wait; |
| 52 | struct sk_buff_head readq; |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 53 | }; |
| 54 | |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 55 | static int vhci_open_dev(struct hci_dev *hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | { |
| 57 | set_bit(HCI_RUNNING, &hdev->flags); |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 58 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | return 0; |
| 60 | } |
| 61 | |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 62 | static int vhci_close_dev(struct hci_dev *hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | { |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 64 | struct vhci_data *data = hdev->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) |
| 67 | return 0; |
| 68 | |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 69 | skb_queue_purge(&data->readq); |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 70 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | return 0; |
| 72 | } |
| 73 | |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 74 | static int vhci_flush(struct hci_dev *hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | { |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 76 | struct vhci_data *data = hdev->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 78 | skb_queue_purge(&data->readq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 80 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | } |
| 82 | |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 83 | static int vhci_send_frame(struct sk_buff *skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | { |
| 85 | struct hci_dev* hdev = (struct hci_dev *) skb->dev; |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 86 | struct vhci_data *data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | |
| 88 | if (!hdev) { |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 89 | BT_ERR("Frame for unknown HCI device (hdev=NULL)"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | return -ENODEV; |
| 91 | } |
| 92 | |
| 93 | if (!test_bit(HCI_RUNNING, &hdev->flags)) |
| 94 | return -EBUSY; |
| 95 | |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 96 | data = hdev->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 98 | memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1); |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 99 | skb_queue_tail(&data->readq, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 101 | wake_up_interruptible(&data->read_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | |
| 103 | return 0; |
| 104 | } |
| 105 | |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 106 | static void vhci_destruct(struct hci_dev *hdev) |
| 107 | { |
| 108 | kfree(hdev->driver_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | } |
| 110 | |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 111 | static inline ssize_t vhci_get_user(struct vhci_data *data, |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 112 | const char __user *buf, size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | { |
| 114 | struct sk_buff *skb; |
| 115 | |
| 116 | if (count > HCI_MAX_FRAME_SIZE) |
| 117 | return -EINVAL; |
| 118 | |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 119 | skb = bt_skb_alloc(count, GFP_KERNEL); |
| 120 | if (!skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | return -ENOMEM; |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 122 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | if (copy_from_user(skb_put(skb, count), buf, count)) { |
| 124 | kfree_skb(skb); |
| 125 | return -EFAULT; |
| 126 | } |
| 127 | |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 128 | skb->dev = (void *) data->hdev; |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 129 | bt_cb(skb)->pkt_type = *((__u8 *) skb->data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | skb_pull(skb, 1); |
| 131 | |
| 132 | hci_recv_frame(skb); |
| 133 | |
| 134 | return count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | } |
| 136 | |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 137 | static inline ssize_t vhci_put_user(struct vhci_data *data, |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 138 | struct sk_buff *skb, char __user *buf, int count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | char __user *ptr = buf; |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 141 | int len, total = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 143 | len = min_t(unsigned int, skb->len, count); |
| 144 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | if (copy_to_user(ptr, skb->data, len)) |
| 146 | return -EFAULT; |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 147 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | total += len; |
| 149 | |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 150 | data->hdev->stat.byte_tx += len; |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 151 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 152 | switch (bt_cb(skb)->pkt_type) { |
| 153 | case HCI_COMMAND_PKT: |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 154 | data->hdev->stat.cmd_tx++; |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 155 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 157 | case HCI_ACLDATA_PKT: |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 158 | data->hdev->stat.acl_tx++; |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 159 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 161 | case HCI_SCODATA_PKT: |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 162 | data->hdev->stat.cmd_tx++; |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 163 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | }; |
| 165 | |
| 166 | return total; |
| 167 | } |
| 168 | |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 169 | static ssize_t vhci_read(struct file *file, |
| 170 | char __user *buf, size_t count, loff_t *pos) |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 171 | { |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 172 | struct vhci_data *data = file->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | struct sk_buff *skb; |
| 174 | ssize_t ret = 0; |
| 175 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | while (count) { |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 177 | skb = skb_dequeue(&data->readq); |
Marcel Holtmann | 4db7589 | 2009-06-08 14:13:57 +0200 | [diff] [blame] | 178 | if (skb) { |
| 179 | ret = vhci_put_user(data, skb, buf, count); |
| 180 | if (ret < 0) |
| 181 | skb_queue_head(&data->readq, skb); |
| 182 | else |
| 183 | kfree_skb(skb); |
| 184 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | } |
| 186 | |
Marcel Holtmann | 4db7589 | 2009-06-08 14:13:57 +0200 | [diff] [blame] | 187 | if (file->f_flags & O_NONBLOCK) { |
| 188 | ret = -EAGAIN; |
| 189 | break; |
| 190 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | |
Marcel Holtmann | 4db7589 | 2009-06-08 14:13:57 +0200 | [diff] [blame] | 192 | ret = wait_event_interruptible(data->read_wait, |
| 193 | !skb_queue_empty(&data->readq)); |
| 194 | if (ret < 0) |
| 195 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | |
| 198 | return ret; |
| 199 | } |
| 200 | |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 201 | static ssize_t vhci_write(struct file *file, |
| 202 | const char __user *buf, size_t count, loff_t *pos) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | { |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 204 | struct vhci_data *data = file->private_data; |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 205 | |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 206 | return vhci_get_user(data, buf, count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | } |
| 208 | |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 209 | static unsigned int vhci_poll(struct file *file, poll_table *wait) |
| 210 | { |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 211 | struct vhci_data *data = file->private_data; |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 212 | |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 213 | poll_wait(file, &data->read_wait, wait); |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 214 | |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 215 | if (!skb_queue_empty(&data->readq)) |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 216 | return POLLIN | POLLRDNORM; |
| 217 | |
| 218 | return POLLOUT | POLLWRNORM; |
| 219 | } |
| 220 | |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 221 | static int vhci_open(struct inode *inode, struct file *file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | { |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 223 | struct vhci_data *data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | struct hci_dev *hdev; |
| 225 | |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 226 | data = kzalloc(sizeof(struct vhci_data), GFP_KERNEL); |
| 227 | if (!data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | return -ENOMEM; |
| 229 | |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 230 | skb_queue_head_init(&data->readq); |
| 231 | init_waitqueue_head(&data->read_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | hdev = hci_alloc_dev(); |
| 234 | if (!hdev) { |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 235 | kfree(data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | return -ENOMEM; |
| 237 | } |
| 238 | |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 239 | data->hdev = hdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | |
Marcel Holtmann | 0ac5393 | 2006-07-08 13:57:15 +0200 | [diff] [blame] | 241 | hdev->type = HCI_VIRTUAL; |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 242 | hdev->driver_data = data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 244 | hdev->open = vhci_open_dev; |
| 245 | hdev->close = vhci_close_dev; |
| 246 | hdev->flush = vhci_flush; |
| 247 | hdev->send = vhci_send_frame; |
| 248 | hdev->destruct = vhci_destruct; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | |
| 250 | hdev->owner = THIS_MODULE; |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 251 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | if (hci_register_dev(hdev) < 0) { |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 253 | BT_ERR("Can't register HCI device"); |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 254 | kfree(data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | hci_free_dev(hdev); |
| 256 | return -EBUSY; |
| 257 | } |
| 258 | |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 259 | file->private_data = data; |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 260 | |
| 261 | return nonseekable_open(inode, file); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | } |
| 263 | |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 264 | static int vhci_release(struct inode *inode, struct file *file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | { |
Marcel Holtmann | 9c72435 | 2006-07-06 15:45:23 +0200 | [diff] [blame] | 266 | struct vhci_data *data = file->private_data; |
| 267 | struct hci_dev *hdev = data->hdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | |
| 269 | if (hci_unregister_dev(hdev) < 0) { |
| 270 | BT_ERR("Can't unregister HCI device %s", hdev->name); |
| 271 | } |
| 272 | |
| 273 | hci_free_dev(hdev); |
| 274 | |
| 275 | file->private_data = NULL; |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 276 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | return 0; |
| 278 | } |
| 279 | |
Arjan van de Ven | 2b8693c | 2007-02-12 00:55:32 -0800 | [diff] [blame] | 280 | static const struct file_operations vhci_fops = { |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 281 | .read = vhci_read, |
| 282 | .write = vhci_write, |
| 283 | .poll = vhci_poll, |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 284 | .open = vhci_open, |
| 285 | .release = vhci_release, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | }; |
| 287 | |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 288 | static struct miscdevice vhci_miscdev= { |
Marcel Holtmann | ac28494 | 2009-06-07 18:09:57 +0200 | [diff] [blame] | 289 | .name = "vhci", |
| 290 | .fops = &vhci_fops, |
| 291 | .minor = MISC_DYNAMIC_MINOR, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | }; |
| 293 | |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 294 | static int __init vhci_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | { |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 296 | BT_INFO("Virtual HCI driver ver %s", VERSION); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 298 | if (misc_register(&vhci_miscdev) < 0) { |
| 299 | BT_ERR("Can't register misc device with minor %d", minor); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | return -EIO; |
| 301 | } |
| 302 | |
| 303 | return 0; |
| 304 | } |
| 305 | |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 306 | static void __exit vhci_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | { |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 308 | if (misc_deregister(&vhci_miscdev) < 0) |
| 309 | BT_ERR("Can't unregister misc device with minor %d", minor); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | } |
| 311 | |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 312 | module_init(vhci_init); |
| 313 | module_exit(vhci_exit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | |
Marcel Holtmann | 63fbd24 | 2008-08-18 13:23:53 +0200 | [diff] [blame] | 315 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
Marcel Holtmann | 4aa769b | 2005-08-09 20:27:37 -0700 | [diff] [blame] | 316 | MODULE_DESCRIPTION("Bluetooth virtual HCI driver ver " VERSION); |
| 317 | MODULE_VERSION(VERSION); |
| 318 | MODULE_LICENSE("GPL"); |