Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * Digianswer Bluetooth USB driver |
| 4 | * |
| 5 | * Copyright (C) 2004-2005 Marcel Holtmann <marcel@holtmann.org> |
| 6 | * |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 21 | * |
| 22 | */ |
| 23 | |
| 24 | #include <linux/config.h> |
| 25 | #include <linux/module.h> |
| 26 | |
| 27 | #include <linux/kernel.h> |
| 28 | #include <linux/init.h> |
| 29 | #include <linux/slab.h> |
| 30 | #include <linux/types.h> |
| 31 | #include <linux/errno.h> |
| 32 | |
| 33 | #include <linux/usb.h> |
| 34 | |
| 35 | #include <net/bluetooth/bluetooth.h> |
| 36 | #include <net/bluetooth/hci_core.h> |
| 37 | |
| 38 | #ifndef CONFIG_BT_HCIBPA10X_DEBUG |
| 39 | #undef BT_DBG |
| 40 | #define BT_DBG(D...) |
| 41 | #endif |
| 42 | |
| 43 | #define VERSION "0.8" |
| 44 | |
| 45 | static int ignore = 0; |
| 46 | |
| 47 | static struct usb_device_id bpa10x_table[] = { |
| 48 | /* Tektronix BPA 100/105 (Digianswer) */ |
| 49 | { USB_DEVICE(0x08fd, 0x0002) }, |
| 50 | |
| 51 | { } /* Terminating entry */ |
| 52 | }; |
| 53 | |
| 54 | MODULE_DEVICE_TABLE(usb, bpa10x_table); |
| 55 | |
| 56 | #define BPA10X_CMD_EP 0x00 |
| 57 | #define BPA10X_EVT_EP 0x81 |
| 58 | #define BPA10X_TX_EP 0x02 |
| 59 | #define BPA10X_RX_EP 0x82 |
| 60 | |
| 61 | #define BPA10X_CMD_BUF_SIZE 252 |
| 62 | #define BPA10X_EVT_BUF_SIZE 16 |
| 63 | #define BPA10X_TX_BUF_SIZE 384 |
| 64 | #define BPA10X_RX_BUF_SIZE 384 |
| 65 | |
| 66 | struct bpa10x_data { |
| 67 | struct hci_dev *hdev; |
| 68 | struct usb_device *udev; |
| 69 | |
| 70 | rwlock_t lock; |
| 71 | |
| 72 | struct sk_buff_head cmd_queue; |
| 73 | struct urb *cmd_urb; |
| 74 | struct urb *evt_urb; |
| 75 | struct sk_buff *evt_skb; |
| 76 | unsigned int evt_len; |
| 77 | |
| 78 | struct sk_buff_head tx_queue; |
| 79 | struct urb *tx_urb; |
| 80 | struct urb *rx_urb; |
| 81 | }; |
| 82 | |
| 83 | #define HCI_VENDOR_HDR_SIZE 5 |
| 84 | |
| 85 | struct hci_vendor_hdr { |
| 86 | __u8 type; |
| 87 | __u16 snum; |
| 88 | __u16 dlen; |
| 89 | } __attribute__ ((packed)); |
| 90 | |
| 91 | static void bpa10x_recv_bulk(struct bpa10x_data *data, unsigned char *buf, int count) |
| 92 | { |
| 93 | struct hci_acl_hdr *ah; |
| 94 | struct hci_sco_hdr *sh; |
| 95 | struct hci_vendor_hdr *vh; |
| 96 | struct sk_buff *skb; |
| 97 | int len; |
| 98 | |
| 99 | while (count) { |
| 100 | switch (*buf++) { |
| 101 | case HCI_ACLDATA_PKT: |
| 102 | ah = (struct hci_acl_hdr *) buf; |
| 103 | len = HCI_ACL_HDR_SIZE + __le16_to_cpu(ah->dlen); |
| 104 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
| 105 | if (skb) { |
| 106 | memcpy(skb_put(skb, len), buf, len); |
| 107 | skb->dev = (void *) data->hdev; |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 108 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | hci_recv_frame(skb); |
| 110 | } |
| 111 | break; |
| 112 | |
| 113 | case HCI_SCODATA_PKT: |
| 114 | sh = (struct hci_sco_hdr *) buf; |
| 115 | len = HCI_SCO_HDR_SIZE + sh->dlen; |
| 116 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
| 117 | if (skb) { |
| 118 | memcpy(skb_put(skb, len), buf, len); |
| 119 | skb->dev = (void *) data->hdev; |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 120 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | hci_recv_frame(skb); |
| 122 | } |
| 123 | break; |
| 124 | |
| 125 | case HCI_VENDOR_PKT: |
| 126 | vh = (struct hci_vendor_hdr *) buf; |
| 127 | len = HCI_VENDOR_HDR_SIZE + __le16_to_cpu(vh->dlen); |
| 128 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
| 129 | if (skb) { |
| 130 | memcpy(skb_put(skb, len), buf, len); |
| 131 | skb->dev = (void *) data->hdev; |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 132 | bt_cb(skb)->pkt_type = HCI_VENDOR_PKT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | hci_recv_frame(skb); |
| 134 | } |
| 135 | break; |
| 136 | |
| 137 | default: |
| 138 | len = count - 1; |
| 139 | break; |
| 140 | } |
| 141 | |
| 142 | buf += len; |
| 143 | count -= (len + 1); |
| 144 | } |
| 145 | } |
| 146 | |
| 147 | static int bpa10x_recv_event(struct bpa10x_data *data, unsigned char *buf, int size) |
| 148 | { |
| 149 | BT_DBG("data %p buf %p size %d", data, buf, size); |
| 150 | |
| 151 | if (data->evt_skb) { |
| 152 | struct sk_buff *skb = data->evt_skb; |
| 153 | |
| 154 | memcpy(skb_put(skb, size), buf, size); |
| 155 | |
| 156 | if (skb->len == data->evt_len) { |
| 157 | data->evt_skb = NULL; |
| 158 | data->evt_len = 0; |
| 159 | hci_recv_frame(skb); |
| 160 | } |
| 161 | } else { |
| 162 | struct sk_buff *skb; |
| 163 | struct hci_event_hdr *hdr; |
| 164 | unsigned char pkt_type; |
| 165 | int pkt_len = 0; |
| 166 | |
| 167 | if (size < HCI_EVENT_HDR_SIZE + 1) { |
| 168 | BT_ERR("%s event packet block with size %d is too short", |
| 169 | data->hdev->name, size); |
| 170 | return -EILSEQ; |
| 171 | } |
| 172 | |
| 173 | pkt_type = *buf++; |
| 174 | size--; |
| 175 | |
| 176 | if (pkt_type != HCI_EVENT_PKT) { |
| 177 | BT_ERR("%s unexpected event packet start byte 0x%02x", |
| 178 | data->hdev->name, pkt_type); |
| 179 | return -EPROTO; |
| 180 | } |
| 181 | |
| 182 | hdr = (struct hci_event_hdr *) buf; |
| 183 | pkt_len = HCI_EVENT_HDR_SIZE + hdr->plen; |
| 184 | |
| 185 | skb = bt_skb_alloc(pkt_len, GFP_ATOMIC); |
| 186 | if (!skb) { |
| 187 | BT_ERR("%s no memory for new event packet", |
| 188 | data->hdev->name); |
| 189 | return -ENOMEM; |
| 190 | } |
| 191 | |
| 192 | skb->dev = (void *) data->hdev; |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 193 | bt_cb(skb)->pkt_type = pkt_type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | |
| 195 | memcpy(skb_put(skb, size), buf, size); |
| 196 | |
| 197 | if (pkt_len == size) { |
| 198 | hci_recv_frame(skb); |
| 199 | } else { |
| 200 | data->evt_skb = skb; |
| 201 | data->evt_len = pkt_len; |
| 202 | } |
| 203 | } |
| 204 | |
| 205 | return 0; |
| 206 | } |
| 207 | |
| 208 | static void bpa10x_wakeup(struct bpa10x_data *data) |
| 209 | { |
| 210 | struct urb *urb; |
| 211 | struct sk_buff *skb; |
| 212 | int err; |
| 213 | |
| 214 | BT_DBG("data %p", data); |
| 215 | |
| 216 | urb = data->cmd_urb; |
| 217 | if (urb->status == -EINPROGRESS) |
| 218 | skb = NULL; |
| 219 | else |
| 220 | skb = skb_dequeue(&data->cmd_queue); |
| 221 | |
| 222 | if (skb) { |
| 223 | struct usb_ctrlrequest *cr; |
| 224 | |
| 225 | if (skb->len > BPA10X_CMD_BUF_SIZE) { |
| 226 | BT_ERR("%s command packet with size %d is too big", |
| 227 | data->hdev->name, skb->len); |
| 228 | kfree_skb(skb); |
| 229 | return; |
| 230 | } |
| 231 | |
| 232 | cr = (struct usb_ctrlrequest *) urb->setup_packet; |
| 233 | cr->wLength = __cpu_to_le16(skb->len); |
| 234 | |
| 235 | memcpy(urb->transfer_buffer, skb->data, skb->len); |
| 236 | urb->transfer_buffer_length = skb->len; |
| 237 | |
| 238 | err = usb_submit_urb(urb, GFP_ATOMIC); |
| 239 | if (err < 0 && err != -ENODEV) { |
| 240 | BT_ERR("%s submit failed for command urb %p with error %d", |
| 241 | data->hdev->name, urb, err); |
| 242 | skb_queue_head(&data->cmd_queue, skb); |
| 243 | } else |
| 244 | kfree_skb(skb); |
| 245 | } |
| 246 | |
| 247 | urb = data->tx_urb; |
| 248 | if (urb->status == -EINPROGRESS) |
| 249 | skb = NULL; |
| 250 | else |
| 251 | skb = skb_dequeue(&data->tx_queue); |
| 252 | |
| 253 | if (skb) { |
| 254 | memcpy(urb->transfer_buffer, skb->data, skb->len); |
| 255 | urb->transfer_buffer_length = skb->len; |
| 256 | |
| 257 | err = usb_submit_urb(urb, GFP_ATOMIC); |
| 258 | if (err < 0 && err != -ENODEV) { |
| 259 | BT_ERR("%s submit failed for command urb %p with error %d", |
| 260 | data->hdev->name, urb, err); |
| 261 | skb_queue_head(&data->tx_queue, skb); |
| 262 | } else |
| 263 | kfree_skb(skb); |
| 264 | } |
| 265 | } |
| 266 | |
| 267 | static void bpa10x_complete(struct urb *urb, struct pt_regs *regs) |
| 268 | { |
| 269 | struct bpa10x_data *data = urb->context; |
| 270 | unsigned char *buf = urb->transfer_buffer; |
| 271 | int err, count = urb->actual_length; |
| 272 | |
| 273 | BT_DBG("data %p urb %p buf %p count %d", data, urb, buf, count); |
| 274 | |
| 275 | read_lock(&data->lock); |
| 276 | |
| 277 | if (!test_bit(HCI_RUNNING, &data->hdev->flags)) |
| 278 | goto unlock; |
| 279 | |
| 280 | if (urb->status < 0 || !count) |
| 281 | goto resubmit; |
| 282 | |
| 283 | if (usb_pipein(urb->pipe)) { |
| 284 | data->hdev->stat.byte_rx += count; |
| 285 | |
| 286 | if (usb_pipetype(urb->pipe) == PIPE_INTERRUPT) |
| 287 | bpa10x_recv_event(data, buf, count); |
| 288 | |
| 289 | if (usb_pipetype(urb->pipe) == PIPE_BULK) |
| 290 | bpa10x_recv_bulk(data, buf, count); |
| 291 | } else { |
| 292 | data->hdev->stat.byte_tx += count; |
| 293 | |
| 294 | bpa10x_wakeup(data); |
| 295 | } |
| 296 | |
| 297 | resubmit: |
| 298 | if (usb_pipein(urb->pipe)) { |
| 299 | err = usb_submit_urb(urb, GFP_ATOMIC); |
| 300 | if (err < 0 && err != -ENODEV) { |
| 301 | BT_ERR("%s urb %p type %d resubmit status %d", |
| 302 | data->hdev->name, urb, usb_pipetype(urb->pipe), err); |
| 303 | } |
| 304 | } |
| 305 | |
| 306 | unlock: |
| 307 | read_unlock(&data->lock); |
| 308 | } |
| 309 | |
Victor Fusco | 2eb25a6 | 2005-08-09 20:29:11 -0700 | [diff] [blame] | 310 | static inline struct urb *bpa10x_alloc_urb(struct usb_device *udev, unsigned int pipe, |
Al Viro | dd0fc66 | 2005-10-07 07:46:04 +0100 | [diff] [blame] | 311 | size_t size, gfp_t flags, void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | { |
| 313 | struct urb *urb; |
| 314 | struct usb_ctrlrequest *cr; |
| 315 | unsigned char *buf; |
| 316 | |
| 317 | BT_DBG("udev %p data %p", udev, data); |
| 318 | |
| 319 | urb = usb_alloc_urb(0, flags); |
| 320 | if (!urb) |
| 321 | return NULL; |
| 322 | |
| 323 | buf = kmalloc(size, flags); |
| 324 | if (!buf) { |
| 325 | usb_free_urb(urb); |
| 326 | return NULL; |
| 327 | } |
| 328 | |
| 329 | switch (usb_pipetype(pipe)) { |
| 330 | case PIPE_CONTROL: |
| 331 | cr = kmalloc(sizeof(*cr), flags); |
| 332 | if (!cr) { |
| 333 | kfree(buf); |
| 334 | usb_free_urb(urb); |
| 335 | return NULL; |
| 336 | } |
| 337 | |
| 338 | cr->bRequestType = USB_TYPE_VENDOR; |
| 339 | cr->bRequest = 0; |
| 340 | cr->wIndex = 0; |
| 341 | cr->wValue = 0; |
| 342 | cr->wLength = __cpu_to_le16(0); |
| 343 | |
| 344 | usb_fill_control_urb(urb, udev, pipe, (void *) cr, buf, 0, bpa10x_complete, data); |
| 345 | break; |
| 346 | |
| 347 | case PIPE_INTERRUPT: |
| 348 | usb_fill_int_urb(urb, udev, pipe, buf, size, bpa10x_complete, data, 1); |
| 349 | break; |
| 350 | |
| 351 | case PIPE_BULK: |
| 352 | usb_fill_bulk_urb(urb, udev, pipe, buf, size, bpa10x_complete, data); |
| 353 | break; |
| 354 | |
| 355 | default: |
| 356 | kfree(buf); |
| 357 | usb_free_urb(urb); |
| 358 | return NULL; |
| 359 | } |
| 360 | |
| 361 | return urb; |
| 362 | } |
| 363 | |
| 364 | static inline void bpa10x_free_urb(struct urb *urb) |
| 365 | { |
| 366 | BT_DBG("urb %p", urb); |
| 367 | |
| 368 | if (!urb) |
| 369 | return; |
| 370 | |
Marcel Holtmann | e9a3e67 | 2005-08-06 12:36:47 +0200 | [diff] [blame] | 371 | kfree(urb->setup_packet); |
| 372 | kfree(urb->transfer_buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | |
| 374 | usb_free_urb(urb); |
| 375 | } |
| 376 | |
| 377 | static int bpa10x_open(struct hci_dev *hdev) |
| 378 | { |
| 379 | struct bpa10x_data *data = hdev->driver_data; |
| 380 | struct usb_device *udev = data->udev; |
| 381 | unsigned long flags; |
| 382 | int err; |
| 383 | |
| 384 | BT_DBG("hdev %p data %p", hdev, data); |
| 385 | |
| 386 | if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) |
| 387 | return 0; |
| 388 | |
| 389 | data->cmd_urb = bpa10x_alloc_urb(udev, usb_sndctrlpipe(udev, BPA10X_CMD_EP), |
| 390 | BPA10X_CMD_BUF_SIZE, GFP_KERNEL, data); |
| 391 | if (!data->cmd_urb) { |
| 392 | err = -ENOMEM; |
| 393 | goto done; |
| 394 | } |
| 395 | |
| 396 | data->evt_urb = bpa10x_alloc_urb(udev, usb_rcvintpipe(udev, BPA10X_EVT_EP), |
| 397 | BPA10X_EVT_BUF_SIZE, GFP_KERNEL, data); |
| 398 | if (!data->evt_urb) { |
| 399 | bpa10x_free_urb(data->cmd_urb); |
| 400 | err = -ENOMEM; |
| 401 | goto done; |
| 402 | } |
| 403 | |
| 404 | data->rx_urb = bpa10x_alloc_urb(udev, usb_rcvbulkpipe(udev, BPA10X_RX_EP), |
| 405 | BPA10X_RX_BUF_SIZE, GFP_KERNEL, data); |
| 406 | if (!data->rx_urb) { |
| 407 | bpa10x_free_urb(data->evt_urb); |
| 408 | bpa10x_free_urb(data->cmd_urb); |
| 409 | err = -ENOMEM; |
| 410 | goto done; |
| 411 | } |
| 412 | |
| 413 | data->tx_urb = bpa10x_alloc_urb(udev, usb_sndbulkpipe(udev, BPA10X_TX_EP), |
| 414 | BPA10X_TX_BUF_SIZE, GFP_KERNEL, data); |
| 415 | if (!data->rx_urb) { |
| 416 | bpa10x_free_urb(data->rx_urb); |
| 417 | bpa10x_free_urb(data->evt_urb); |
| 418 | bpa10x_free_urb(data->cmd_urb); |
| 419 | err = -ENOMEM; |
| 420 | goto done; |
| 421 | } |
| 422 | |
| 423 | write_lock_irqsave(&data->lock, flags); |
| 424 | |
| 425 | err = usb_submit_urb(data->evt_urb, GFP_ATOMIC); |
| 426 | if (err < 0) { |
| 427 | BT_ERR("%s submit failed for event urb %p with error %d", |
| 428 | data->hdev->name, data->evt_urb, err); |
| 429 | } else { |
| 430 | err = usb_submit_urb(data->rx_urb, GFP_ATOMIC); |
| 431 | if (err < 0) { |
| 432 | BT_ERR("%s submit failed for rx urb %p with error %d", |
| 433 | data->hdev->name, data->evt_urb, err); |
| 434 | usb_kill_urb(data->evt_urb); |
| 435 | } |
| 436 | } |
| 437 | |
| 438 | write_unlock_irqrestore(&data->lock, flags); |
| 439 | |
| 440 | done: |
| 441 | if (err < 0) |
| 442 | clear_bit(HCI_RUNNING, &hdev->flags); |
| 443 | |
| 444 | return err; |
| 445 | } |
| 446 | |
| 447 | static int bpa10x_close(struct hci_dev *hdev) |
| 448 | { |
| 449 | struct bpa10x_data *data = hdev->driver_data; |
| 450 | unsigned long flags; |
| 451 | |
| 452 | BT_DBG("hdev %p data %p", hdev, data); |
| 453 | |
| 454 | if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) |
| 455 | return 0; |
| 456 | |
| 457 | write_lock_irqsave(&data->lock, flags); |
| 458 | |
| 459 | skb_queue_purge(&data->cmd_queue); |
| 460 | usb_kill_urb(data->cmd_urb); |
| 461 | usb_kill_urb(data->evt_urb); |
| 462 | usb_kill_urb(data->rx_urb); |
| 463 | usb_kill_urb(data->tx_urb); |
| 464 | |
| 465 | write_unlock_irqrestore(&data->lock, flags); |
| 466 | |
| 467 | bpa10x_free_urb(data->cmd_urb); |
| 468 | bpa10x_free_urb(data->evt_urb); |
| 469 | bpa10x_free_urb(data->rx_urb); |
| 470 | bpa10x_free_urb(data->tx_urb); |
| 471 | |
| 472 | return 0; |
| 473 | } |
| 474 | |
| 475 | static int bpa10x_flush(struct hci_dev *hdev) |
| 476 | { |
| 477 | struct bpa10x_data *data = hdev->driver_data; |
| 478 | |
| 479 | BT_DBG("hdev %p data %p", hdev, data); |
| 480 | |
| 481 | skb_queue_purge(&data->cmd_queue); |
| 482 | |
| 483 | return 0; |
| 484 | } |
| 485 | |
| 486 | static int bpa10x_send_frame(struct sk_buff *skb) |
| 487 | { |
| 488 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; |
| 489 | struct bpa10x_data *data; |
| 490 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 491 | BT_DBG("hdev %p skb %p type %d len %d", hdev, skb, bt_cb(skb)->pkt_type, skb->len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | |
| 493 | if (!hdev) { |
| 494 | BT_ERR("Frame for unknown HCI device"); |
| 495 | return -ENODEV; |
| 496 | } |
| 497 | |
| 498 | if (!test_bit(HCI_RUNNING, &hdev->flags)) |
| 499 | return -EBUSY; |
| 500 | |
| 501 | data = hdev->driver_data; |
| 502 | |
| 503 | /* Prepend skb with frame type */ |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 504 | memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 506 | switch (bt_cb(skb)->pkt_type) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | case HCI_COMMAND_PKT: |
| 508 | hdev->stat.cmd_tx++; |
| 509 | skb_queue_tail(&data->cmd_queue, skb); |
| 510 | break; |
| 511 | |
| 512 | case HCI_ACLDATA_PKT: |
| 513 | hdev->stat.acl_tx++; |
| 514 | skb_queue_tail(&data->tx_queue, skb); |
| 515 | break; |
| 516 | |
| 517 | case HCI_SCODATA_PKT: |
| 518 | hdev->stat.sco_tx++; |
| 519 | skb_queue_tail(&data->tx_queue, skb); |
| 520 | break; |
| 521 | }; |
| 522 | |
| 523 | read_lock(&data->lock); |
| 524 | |
| 525 | bpa10x_wakeup(data); |
| 526 | |
| 527 | read_unlock(&data->lock); |
| 528 | |
| 529 | return 0; |
| 530 | } |
| 531 | |
| 532 | static void bpa10x_destruct(struct hci_dev *hdev) |
| 533 | { |
| 534 | struct bpa10x_data *data = hdev->driver_data; |
| 535 | |
| 536 | BT_DBG("hdev %p data %p", hdev, data); |
| 537 | |
| 538 | kfree(data); |
| 539 | } |
| 540 | |
| 541 | static int bpa10x_probe(struct usb_interface *intf, const struct usb_device_id *id) |
| 542 | { |
| 543 | struct usb_device *udev = interface_to_usbdev(intf); |
| 544 | struct hci_dev *hdev; |
| 545 | struct bpa10x_data *data; |
| 546 | int err; |
| 547 | |
| 548 | BT_DBG("intf %p id %p", intf, id); |
| 549 | |
| 550 | if (ignore) |
| 551 | return -ENODEV; |
| 552 | |
Marcel Holtmann | 245dc3d | 2005-10-28 19:20:57 +0200 | [diff] [blame] | 553 | if (intf->cur_altsetting->desc.bInterfaceNumber > 0) |
| 554 | return -ENODEV; |
| 555 | |
Deepak Saxena | 089b1db | 2005-11-07 01:01:26 -0800 | [diff] [blame] | 556 | data = kzalloc(sizeof(*data), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | if (!data) { |
| 558 | BT_ERR("Can't allocate data structure"); |
| 559 | return -ENOMEM; |
| 560 | } |
| 561 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | data->udev = udev; |
| 563 | |
| 564 | rwlock_init(&data->lock); |
| 565 | |
| 566 | skb_queue_head_init(&data->cmd_queue); |
| 567 | skb_queue_head_init(&data->tx_queue); |
| 568 | |
| 569 | hdev = hci_alloc_dev(); |
| 570 | if (!hdev) { |
| 571 | BT_ERR("Can't allocate HCI device"); |
| 572 | kfree(data); |
| 573 | return -ENOMEM; |
| 574 | } |
| 575 | |
| 576 | data->hdev = hdev; |
| 577 | |
| 578 | hdev->type = HCI_USB; |
| 579 | hdev->driver_data = data; |
| 580 | SET_HCIDEV_DEV(hdev, &intf->dev); |
| 581 | |
| 582 | hdev->open = bpa10x_open; |
| 583 | hdev->close = bpa10x_close; |
| 584 | hdev->flush = bpa10x_flush; |
| 585 | hdev->send = bpa10x_send_frame; |
| 586 | hdev->destruct = bpa10x_destruct; |
| 587 | |
| 588 | hdev->owner = THIS_MODULE; |
| 589 | |
| 590 | err = hci_register_dev(hdev); |
| 591 | if (err < 0) { |
| 592 | BT_ERR("Can't register HCI device"); |
| 593 | kfree(data); |
| 594 | hci_free_dev(hdev); |
| 595 | return err; |
| 596 | } |
| 597 | |
| 598 | usb_set_intfdata(intf, data); |
| 599 | |
| 600 | return 0; |
| 601 | } |
| 602 | |
| 603 | static void bpa10x_disconnect(struct usb_interface *intf) |
| 604 | { |
| 605 | struct bpa10x_data *data = usb_get_intfdata(intf); |
| 606 | struct hci_dev *hdev = data->hdev; |
| 607 | |
| 608 | BT_DBG("intf %p", intf); |
| 609 | |
| 610 | if (!hdev) |
| 611 | return; |
| 612 | |
| 613 | usb_set_intfdata(intf, NULL); |
| 614 | |
| 615 | if (hci_unregister_dev(hdev) < 0) |
| 616 | BT_ERR("Can't unregister HCI device %s", hdev->name); |
| 617 | |
| 618 | hci_free_dev(hdev); |
| 619 | } |
| 620 | |
| 621 | static struct usb_driver bpa10x_driver = { |
| 622 | .owner = THIS_MODULE, |
| 623 | .name = "bpa10x", |
| 624 | .probe = bpa10x_probe, |
| 625 | .disconnect = bpa10x_disconnect, |
| 626 | .id_table = bpa10x_table, |
| 627 | }; |
| 628 | |
| 629 | static int __init bpa10x_init(void) |
| 630 | { |
| 631 | int err; |
| 632 | |
| 633 | BT_INFO("Digianswer Bluetooth USB driver ver %s", VERSION); |
| 634 | |
| 635 | err = usb_register(&bpa10x_driver); |
| 636 | if (err < 0) |
| 637 | BT_ERR("Failed to register USB driver"); |
| 638 | |
| 639 | return err; |
| 640 | } |
| 641 | |
| 642 | static void __exit bpa10x_exit(void) |
| 643 | { |
| 644 | usb_deregister(&bpa10x_driver); |
| 645 | } |
| 646 | |
| 647 | module_init(bpa10x_init); |
| 648 | module_exit(bpa10x_exit); |
| 649 | |
| 650 | module_param(ignore, bool, 0644); |
| 651 | MODULE_PARM_DESC(ignore, "Ignore devices from the matching table"); |
| 652 | |
| 653 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
| 654 | MODULE_DESCRIPTION("Digianswer Bluetooth USB driver ver " VERSION); |
| 655 | MODULE_VERSION(VERSION); |
| 656 | MODULE_LICENSE("GPL"); |