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1 | /* | |
2 | * | |
3 | * AVM BlueFRITZ! USB driver | |
4 | * | |
5 | * Copyright (C) 2003-2006 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/module.h> | |
25 | ||
26 | #include <linux/kernel.h> | |
27 | #include <linux/init.h> | |
28 | #include <linux/slab.h> | |
29 | #include <linux/types.h> | |
30 | #include <linux/errno.h> | |
31 | #include <linux/skbuff.h> | |
32 | ||
33 | #include <linux/device.h> | |
34 | #include <linux/firmware.h> | |
35 | ||
36 | #include <linux/usb.h> | |
37 | ||
38 | #include <net/bluetooth/bluetooth.h> | |
39 | #include <net/bluetooth/hci_core.h> | |
40 | ||
41 | #define VERSION "1.2" | |
42 | ||
43 | static struct usb_driver bfusb_driver; | |
44 | ||
45 | static struct usb_device_id bfusb_table[] = { | |
46 | /* AVM BlueFRITZ! USB */ | |
47 | { USB_DEVICE(0x057c, 0x2200) }, | |
48 | ||
49 | { } /* Terminating entry */ | |
50 | }; | |
51 | ||
52 | MODULE_DEVICE_TABLE(usb, bfusb_table); | |
53 | ||
54 | #define BFUSB_MAX_BLOCK_SIZE 256 | |
55 | ||
56 | #define BFUSB_BLOCK_TIMEOUT 3000 | |
57 | ||
58 | #define BFUSB_TX_PROCESS 1 | |
59 | #define BFUSB_TX_WAKEUP 2 | |
60 | ||
61 | #define BFUSB_MAX_BULK_TX 2 | |
62 | #define BFUSB_MAX_BULK_RX 2 | |
63 | ||
64 | struct bfusb_data { | |
65 | struct hci_dev *hdev; | |
66 | ||
67 | unsigned long state; | |
68 | ||
69 | struct usb_device *udev; | |
70 | ||
71 | unsigned int bulk_in_ep; | |
72 | unsigned int bulk_out_ep; | |
73 | unsigned int bulk_pkt_size; | |
74 | ||
75 | rwlock_t lock; | |
76 | ||
77 | struct sk_buff_head transmit_q; | |
78 | ||
79 | struct sk_buff *reassembly; | |
80 | ||
81 | atomic_t pending_tx; | |
82 | struct sk_buff_head pending_q; | |
83 | struct sk_buff_head completed_q; | |
84 | }; | |
85 | ||
86 | struct bfusb_data_scb { | |
87 | struct urb *urb; | |
88 | }; | |
89 | ||
90 | static void bfusb_tx_complete(struct urb *urb); | |
91 | static void bfusb_rx_complete(struct urb *urb); | |
92 | ||
93 | static struct urb *bfusb_get_completed(struct bfusb_data *data) | |
94 | { | |
95 | struct sk_buff *skb; | |
96 | struct urb *urb = NULL; | |
97 | ||
98 | BT_DBG("bfusb %p", data); | |
99 | ||
100 | skb = skb_dequeue(&data->completed_q); | |
101 | if (skb) { | |
102 | urb = ((struct bfusb_data_scb *) skb->cb)->urb; | |
103 | kfree_skb(skb); | |
104 | } | |
105 | ||
106 | return urb; | |
107 | } | |
108 | ||
109 | static void bfusb_unlink_urbs(struct bfusb_data *data) | |
110 | { | |
111 | struct sk_buff *skb; | |
112 | struct urb *urb; | |
113 | ||
114 | BT_DBG("bfusb %p", data); | |
115 | ||
116 | while ((skb = skb_dequeue(&data->pending_q))) { | |
117 | urb = ((struct bfusb_data_scb *) skb->cb)->urb; | |
118 | usb_kill_urb(urb); | |
119 | skb_queue_tail(&data->completed_q, skb); | |
120 | } | |
121 | ||
122 | while ((urb = bfusb_get_completed(data))) | |
123 | usb_free_urb(urb); | |
124 | } | |
125 | ||
126 | static int bfusb_send_bulk(struct bfusb_data *data, struct sk_buff *skb) | |
127 | { | |
128 | struct bfusb_data_scb *scb = (void *) skb->cb; | |
129 | struct urb *urb = bfusb_get_completed(data); | |
130 | int err, pipe; | |
131 | ||
132 | BT_DBG("bfusb %p skb %p len %d", data, skb, skb->len); | |
133 | ||
134 | if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC))) | |
135 | return -ENOMEM; | |
136 | ||
137 | pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep); | |
138 | ||
139 | usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, skb->len, | |
140 | bfusb_tx_complete, skb); | |
141 | ||
142 | scb->urb = urb; | |
143 | ||
144 | skb_queue_tail(&data->pending_q, skb); | |
145 | ||
146 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
147 | if (err) { | |
148 | BT_ERR("%s bulk tx submit failed urb %p err %d", | |
149 | data->hdev->name, urb, err); | |
150 | skb_unlink(skb, &data->pending_q); | |
151 | usb_free_urb(urb); | |
152 | } else | |
153 | atomic_inc(&data->pending_tx); | |
154 | ||
155 | return err; | |
156 | } | |
157 | ||
158 | static void bfusb_tx_wakeup(struct bfusb_data *data) | |
159 | { | |
160 | struct sk_buff *skb; | |
161 | ||
162 | BT_DBG("bfusb %p", data); | |
163 | ||
164 | if (test_and_set_bit(BFUSB_TX_PROCESS, &data->state)) { | |
165 | set_bit(BFUSB_TX_WAKEUP, &data->state); | |
166 | return; | |
167 | } | |
168 | ||
169 | do { | |
170 | clear_bit(BFUSB_TX_WAKEUP, &data->state); | |
171 | ||
172 | while ((atomic_read(&data->pending_tx) < BFUSB_MAX_BULK_TX) && | |
173 | (skb = skb_dequeue(&data->transmit_q))) { | |
174 | if (bfusb_send_bulk(data, skb) < 0) { | |
175 | skb_queue_head(&data->transmit_q, skb); | |
176 | break; | |
177 | } | |
178 | } | |
179 | ||
180 | } while (test_bit(BFUSB_TX_WAKEUP, &data->state)); | |
181 | ||
182 | clear_bit(BFUSB_TX_PROCESS, &data->state); | |
183 | } | |
184 | ||
185 | static void bfusb_tx_complete(struct urb *urb) | |
186 | { | |
187 | struct sk_buff *skb = (struct sk_buff *) urb->context; | |
188 | struct bfusb_data *data = (struct bfusb_data *) skb->dev; | |
189 | ||
190 | BT_DBG("bfusb %p urb %p skb %p len %d", data, urb, skb, skb->len); | |
191 | ||
192 | atomic_dec(&data->pending_tx); | |
193 | ||
194 | if (!test_bit(HCI_RUNNING, &data->hdev->flags)) | |
195 | return; | |
196 | ||
197 | if (!urb->status) | |
198 | data->hdev->stat.byte_tx += skb->len; | |
199 | else | |
200 | data->hdev->stat.err_tx++; | |
201 | ||
202 | read_lock(&data->lock); | |
203 | ||
204 | skb_unlink(skb, &data->pending_q); | |
205 | skb_queue_tail(&data->completed_q, skb); | |
206 | ||
207 | bfusb_tx_wakeup(data); | |
208 | ||
209 | read_unlock(&data->lock); | |
210 | } | |
211 | ||
212 | ||
213 | static int bfusb_rx_submit(struct bfusb_data *data, struct urb *urb) | |
214 | { | |
215 | struct bfusb_data_scb *scb; | |
216 | struct sk_buff *skb; | |
217 | int err, pipe, size = HCI_MAX_FRAME_SIZE + 32; | |
218 | ||
219 | BT_DBG("bfusb %p urb %p", data, urb); | |
220 | ||
221 | if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC))) | |
222 | return -ENOMEM; | |
223 | ||
224 | skb = bt_skb_alloc(size, GFP_ATOMIC); | |
225 | if (!skb) { | |
226 | usb_free_urb(urb); | |
227 | return -ENOMEM; | |
228 | } | |
229 | ||
230 | skb->dev = (void *) data; | |
231 | ||
232 | scb = (struct bfusb_data_scb *) skb->cb; | |
233 | scb->urb = urb; | |
234 | ||
235 | pipe = usb_rcvbulkpipe(data->udev, data->bulk_in_ep); | |
236 | ||
237 | usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, size, | |
238 | bfusb_rx_complete, skb); | |
239 | ||
240 | skb_queue_tail(&data->pending_q, skb); | |
241 | ||
242 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
243 | if (err) { | |
244 | BT_ERR("%s bulk rx submit failed urb %p err %d", | |
245 | data->hdev->name, urb, err); | |
246 | skb_unlink(skb, &data->pending_q); | |
247 | kfree_skb(skb); | |
248 | usb_free_urb(urb); | |
249 | } | |
250 | ||
251 | return err; | |
252 | } | |
253 | ||
254 | static inline int bfusb_recv_block(struct bfusb_data *data, int hdr, unsigned char *buf, int len) | |
255 | { | |
256 | BT_DBG("bfusb %p hdr 0x%02x data %p len %d", data, hdr, buf, len); | |
257 | ||
258 | if (hdr & 0x10) { | |
259 | BT_ERR("%s error in block", data->hdev->name); | |
260 | kfree_skb(data->reassembly); | |
261 | data->reassembly = NULL; | |
262 | return -EIO; | |
263 | } | |
264 | ||
265 | if (hdr & 0x04) { | |
266 | struct sk_buff *skb; | |
267 | unsigned char pkt_type; | |
268 | int pkt_len = 0; | |
269 | ||
270 | if (data->reassembly) { | |
271 | BT_ERR("%s unexpected start block", data->hdev->name); | |
272 | kfree_skb(data->reassembly); | |
273 | data->reassembly = NULL; | |
274 | } | |
275 | ||
276 | if (len < 1) { | |
277 | BT_ERR("%s no packet type found", data->hdev->name); | |
278 | return -EPROTO; | |
279 | } | |
280 | ||
281 | pkt_type = *buf++; len--; | |
282 | ||
283 | switch (pkt_type) { | |
284 | case HCI_EVENT_PKT: | |
285 | if (len >= HCI_EVENT_HDR_SIZE) { | |
286 | struct hci_event_hdr *hdr = (struct hci_event_hdr *) buf; | |
287 | pkt_len = HCI_EVENT_HDR_SIZE + hdr->plen; | |
288 | } else { | |
289 | BT_ERR("%s event block is too short", data->hdev->name); | |
290 | return -EILSEQ; | |
291 | } | |
292 | break; | |
293 | ||
294 | case HCI_ACLDATA_PKT: | |
295 | if (len >= HCI_ACL_HDR_SIZE) { | |
296 | struct hci_acl_hdr *hdr = (struct hci_acl_hdr *) buf; | |
297 | pkt_len = HCI_ACL_HDR_SIZE + __le16_to_cpu(hdr->dlen); | |
298 | } else { | |
299 | BT_ERR("%s data block is too short", data->hdev->name); | |
300 | return -EILSEQ; | |
301 | } | |
302 | break; | |
303 | ||
304 | case HCI_SCODATA_PKT: | |
305 | if (len >= HCI_SCO_HDR_SIZE) { | |
306 | struct hci_sco_hdr *hdr = (struct hci_sco_hdr *) buf; | |
307 | pkt_len = HCI_SCO_HDR_SIZE + hdr->dlen; | |
308 | } else { | |
309 | BT_ERR("%s audio block is too short", data->hdev->name); | |
310 | return -EILSEQ; | |
311 | } | |
312 | break; | |
313 | } | |
314 | ||
315 | skb = bt_skb_alloc(pkt_len, GFP_ATOMIC); | |
316 | if (!skb) { | |
317 | BT_ERR("%s no memory for the packet", data->hdev->name); | |
318 | return -ENOMEM; | |
319 | } | |
320 | ||
321 | skb->dev = (void *) data->hdev; | |
322 | bt_cb(skb)->pkt_type = pkt_type; | |
323 | ||
324 | data->reassembly = skb; | |
325 | } else { | |
326 | if (!data->reassembly) { | |
327 | BT_ERR("%s unexpected continuation block", data->hdev->name); | |
328 | return -EIO; | |
329 | } | |
330 | } | |
331 | ||
332 | if (len > 0) | |
333 | memcpy(skb_put(data->reassembly, len), buf, len); | |
334 | ||
335 | if (hdr & 0x08) { | |
336 | hci_recv_frame(data->reassembly); | |
337 | data->reassembly = NULL; | |
338 | } | |
339 | ||
340 | return 0; | |
341 | } | |
342 | ||
343 | static void bfusb_rx_complete(struct urb *urb) | |
344 | { | |
345 | struct sk_buff *skb = (struct sk_buff *) urb->context; | |
346 | struct bfusb_data *data = (struct bfusb_data *) skb->dev; | |
347 | unsigned char *buf = urb->transfer_buffer; | |
348 | int count = urb->actual_length; | |
349 | int err, hdr, len; | |
350 | ||
351 | BT_DBG("bfusb %p urb %p skb %p len %d", data, urb, skb, skb->len); | |
352 | ||
353 | read_lock(&data->lock); | |
354 | ||
355 | if (!test_bit(HCI_RUNNING, &data->hdev->flags)) | |
356 | goto unlock; | |
357 | ||
358 | if (urb->status || !count) | |
359 | goto resubmit; | |
360 | ||
361 | data->hdev->stat.byte_rx += count; | |
362 | ||
363 | skb_put(skb, count); | |
364 | ||
365 | while (count) { | |
366 | hdr = buf[0] | (buf[1] << 8); | |
367 | ||
368 | if (hdr & 0x4000) { | |
369 | len = 0; | |
370 | count -= 2; | |
371 | buf += 2; | |
372 | } else { | |
373 | len = (buf[2] == 0) ? 256 : buf[2]; | |
374 | count -= 3; | |
375 | buf += 3; | |
376 | } | |
377 | ||
378 | if (count < len) { | |
379 | BT_ERR("%s block extends over URB buffer ranges", | |
380 | data->hdev->name); | |
381 | } | |
382 | ||
383 | if ((hdr & 0xe1) == 0xc1) | |
384 | bfusb_recv_block(data, hdr, buf, len); | |
385 | ||
386 | count -= len; | |
387 | buf += len; | |
388 | } | |
389 | ||
390 | skb_unlink(skb, &data->pending_q); | |
391 | kfree_skb(skb); | |
392 | ||
393 | bfusb_rx_submit(data, urb); | |
394 | ||
395 | read_unlock(&data->lock); | |
396 | ||
397 | return; | |
398 | ||
399 | resubmit: | |
400 | urb->dev = data->udev; | |
401 | ||
402 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
403 | if (err) { | |
404 | BT_ERR("%s bulk resubmit failed urb %p err %d", | |
405 | data->hdev->name, urb, err); | |
406 | } | |
407 | ||
408 | unlock: | |
409 | read_unlock(&data->lock); | |
410 | } | |
411 | ||
412 | static int bfusb_open(struct hci_dev *hdev) | |
413 | { | |
414 | struct bfusb_data *data = hdev->driver_data; | |
415 | unsigned long flags; | |
416 | int i, err; | |
417 | ||
418 | BT_DBG("hdev %p bfusb %p", hdev, data); | |
419 | ||
420 | if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) | |
421 | return 0; | |
422 | ||
423 | write_lock_irqsave(&data->lock, flags); | |
424 | ||
425 | err = bfusb_rx_submit(data, NULL); | |
426 | if (!err) { | |
427 | for (i = 1; i < BFUSB_MAX_BULK_RX; i++) | |
428 | bfusb_rx_submit(data, NULL); | |
429 | } else { | |
430 | clear_bit(HCI_RUNNING, &hdev->flags); | |
431 | } | |
432 | ||
433 | write_unlock_irqrestore(&data->lock, flags); | |
434 | ||
435 | return err; | |
436 | } | |
437 | ||
438 | static int bfusb_flush(struct hci_dev *hdev) | |
439 | { | |
440 | struct bfusb_data *data = hdev->driver_data; | |
441 | ||
442 | BT_DBG("hdev %p bfusb %p", hdev, data); | |
443 | ||
444 | skb_queue_purge(&data->transmit_q); | |
445 | ||
446 | return 0; | |
447 | } | |
448 | ||
449 | static int bfusb_close(struct hci_dev *hdev) | |
450 | { | |
451 | struct bfusb_data *data = hdev->driver_data; | |
452 | unsigned long flags; | |
453 | ||
454 | BT_DBG("hdev %p bfusb %p", hdev, data); | |
455 | ||
456 | if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) | |
457 | return 0; | |
458 | ||
459 | write_lock_irqsave(&data->lock, flags); | |
460 | write_unlock_irqrestore(&data->lock, flags); | |
461 | ||
462 | bfusb_unlink_urbs(data); | |
463 | bfusb_flush(hdev); | |
464 | ||
465 | return 0; | |
466 | } | |
467 | ||
468 | static int bfusb_send_frame(struct sk_buff *skb) | |
469 | { | |
470 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; | |
471 | struct bfusb_data *data; | |
472 | struct sk_buff *nskb; | |
473 | unsigned char buf[3]; | |
474 | int sent = 0, size, count; | |
475 | ||
476 | BT_DBG("hdev %p skb %p type %d len %d", hdev, skb, bt_cb(skb)->pkt_type, skb->len); | |
477 | ||
478 | if (!hdev) { | |
479 | BT_ERR("Frame for unknown HCI device (hdev=NULL)"); | |
480 | return -ENODEV; | |
481 | } | |
482 | ||
483 | if (!test_bit(HCI_RUNNING, &hdev->flags)) | |
484 | return -EBUSY; | |
485 | ||
486 | data = hdev->driver_data; | |
487 | ||
488 | switch (bt_cb(skb)->pkt_type) { | |
489 | case HCI_COMMAND_PKT: | |
490 | hdev->stat.cmd_tx++; | |
491 | break; | |
492 | case HCI_ACLDATA_PKT: | |
493 | hdev->stat.acl_tx++; | |
494 | break; | |
495 | case HCI_SCODATA_PKT: | |
496 | hdev->stat.sco_tx++; | |
497 | break; | |
498 | }; | |
499 | ||
500 | /* Prepend skb with frame type */ | |
501 | memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1); | |
502 | ||
503 | count = skb->len; | |
504 | ||
505 | /* Max HCI frame size seems to be 1511 + 1 */ | |
506 | nskb = bt_skb_alloc(count + 32, GFP_ATOMIC); | |
507 | if (!nskb) { | |
508 | BT_ERR("Can't allocate memory for new packet"); | |
509 | return -ENOMEM; | |
510 | } | |
511 | ||
512 | nskb->dev = (void *) data; | |
513 | ||
514 | while (count) { | |
515 | size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE); | |
516 | ||
517 | buf[0] = 0xc1 | ((sent == 0) ? 0x04 : 0) | ((count == size) ? 0x08 : 0); | |
518 | buf[1] = 0x00; | |
519 | buf[2] = (size == BFUSB_MAX_BLOCK_SIZE) ? 0 : size; | |
520 | ||
521 | memcpy(skb_put(nskb, 3), buf, 3); | |
522 | skb_copy_from_linear_data_offset(skb, sent, skb_put(nskb, size), size); | |
523 | ||
524 | sent += size; | |
525 | count -= size; | |
526 | } | |
527 | ||
528 | /* Don't send frame with multiple size of bulk max packet */ | |
529 | if ((nskb->len % data->bulk_pkt_size) == 0) { | |
530 | buf[0] = 0xdd; | |
531 | buf[1] = 0x00; | |
532 | memcpy(skb_put(nskb, 2), buf, 2); | |
533 | } | |
534 | ||
535 | read_lock(&data->lock); | |
536 | ||
537 | skb_queue_tail(&data->transmit_q, nskb); | |
538 | bfusb_tx_wakeup(data); | |
539 | ||
540 | read_unlock(&data->lock); | |
541 | ||
542 | kfree_skb(skb); | |
543 | ||
544 | return 0; | |
545 | } | |
546 | ||
547 | static void bfusb_destruct(struct hci_dev *hdev) | |
548 | { | |
549 | struct bfusb_data *data = hdev->driver_data; | |
550 | ||
551 | BT_DBG("hdev %p bfusb %p", hdev, data); | |
552 | ||
553 | kfree(data); | |
554 | } | |
555 | ||
556 | static int bfusb_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg) | |
557 | { | |
558 | return -ENOIOCTLCMD; | |
559 | } | |
560 | ||
561 | static int bfusb_load_firmware(struct bfusb_data *data, | |
562 | const unsigned char *firmware, int count) | |
563 | { | |
564 | unsigned char *buf; | |
565 | int err, pipe, len, size, sent = 0; | |
566 | ||
567 | BT_DBG("bfusb %p udev %p", data, data->udev); | |
568 | ||
569 | BT_INFO("BlueFRITZ! USB loading firmware"); | |
570 | ||
571 | pipe = usb_sndctrlpipe(data->udev, 0); | |
572 | ||
573 | if (usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION, | |
574 | 0, 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT) < 0) { | |
575 | BT_ERR("Can't change to loading configuration"); | |
576 | return -EBUSY; | |
577 | } | |
578 | ||
579 | data->udev->toggle[0] = data->udev->toggle[1] = 0; | |
580 | ||
581 | buf = kmalloc(BFUSB_MAX_BLOCK_SIZE + 3, GFP_ATOMIC); | |
582 | if (!buf) { | |
583 | BT_ERR("Can't allocate memory chunk for firmware"); | |
584 | return -ENOMEM; | |
585 | } | |
586 | ||
587 | pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep); | |
588 | ||
589 | while (count) { | |
590 | size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE + 3); | |
591 | ||
592 | memcpy(buf, firmware + sent, size); | |
593 | ||
594 | err = usb_bulk_msg(data->udev, pipe, buf, size, | |
595 | &len, BFUSB_BLOCK_TIMEOUT); | |
596 | ||
597 | if (err || (len != size)) { | |
598 | BT_ERR("Error in firmware loading"); | |
599 | goto error; | |
600 | } | |
601 | ||
602 | sent += size; | |
603 | count -= size; | |
604 | } | |
605 | ||
606 | err = usb_bulk_msg(data->udev, pipe, NULL, 0, | |
607 | &len, BFUSB_BLOCK_TIMEOUT); | |
608 | if (err < 0) { | |
609 | BT_ERR("Error in null packet request"); | |
610 | goto error; | |
611 | } | |
612 | ||
613 | pipe = usb_sndctrlpipe(data->udev, 0); | |
614 | ||
615 | err = usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION, | |
616 | 0, 2, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); | |
617 | if (err < 0) { | |
618 | BT_ERR("Can't change to running configuration"); | |
619 | goto error; | |
620 | } | |
621 | ||
622 | data->udev->toggle[0] = data->udev->toggle[1] = 0; | |
623 | ||
624 | BT_INFO("BlueFRITZ! USB device ready"); | |
625 | ||
626 | kfree(buf); | |
627 | return 0; | |
628 | ||
629 | error: | |
630 | kfree(buf); | |
631 | ||
632 | pipe = usb_sndctrlpipe(data->udev, 0); | |
633 | ||
634 | usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION, | |
635 | 0, 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); | |
636 | ||
637 | return err; | |
638 | } | |
639 | ||
640 | static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *id) | |
641 | { | |
642 | const struct firmware *firmware; | |
643 | struct usb_device *udev = interface_to_usbdev(intf); | |
644 | struct usb_host_endpoint *bulk_out_ep; | |
645 | struct usb_host_endpoint *bulk_in_ep; | |
646 | struct hci_dev *hdev; | |
647 | struct bfusb_data *data; | |
648 | ||
649 | BT_DBG("intf %p id %p", intf, id); | |
650 | ||
651 | /* Check number of endpoints */ | |
652 | if (intf->cur_altsetting->desc.bNumEndpoints < 2) | |
653 | return -EIO; | |
654 | ||
655 | bulk_out_ep = &intf->cur_altsetting->endpoint[0]; | |
656 | bulk_in_ep = &intf->cur_altsetting->endpoint[1]; | |
657 | ||
658 | if (!bulk_out_ep || !bulk_in_ep) { | |
659 | BT_ERR("Bulk endpoints not found"); | |
660 | goto done; | |
661 | } | |
662 | ||
663 | /* Initialize control structure and load firmware */ | |
664 | data = kzalloc(sizeof(struct bfusb_data), GFP_KERNEL); | |
665 | if (!data) { | |
666 | BT_ERR("Can't allocate memory for control structure"); | |
667 | goto done; | |
668 | } | |
669 | ||
670 | data->udev = udev; | |
671 | data->bulk_in_ep = bulk_in_ep->desc.bEndpointAddress; | |
672 | data->bulk_out_ep = bulk_out_ep->desc.bEndpointAddress; | |
673 | data->bulk_pkt_size = le16_to_cpu(bulk_out_ep->desc.wMaxPacketSize); | |
674 | ||
675 | rwlock_init(&data->lock); | |
676 | ||
677 | data->reassembly = NULL; | |
678 | ||
679 | skb_queue_head_init(&data->transmit_q); | |
680 | skb_queue_head_init(&data->pending_q); | |
681 | skb_queue_head_init(&data->completed_q); | |
682 | ||
683 | if (request_firmware(&firmware, "bfubase.frm", &udev->dev) < 0) { | |
684 | BT_ERR("Firmware request failed"); | |
685 | goto error; | |
686 | } | |
687 | ||
688 | BT_DBG("firmware data %p size %zu", firmware->data, firmware->size); | |
689 | ||
690 | if (bfusb_load_firmware(data, firmware->data, firmware->size) < 0) { | |
691 | BT_ERR("Firmware loading failed"); | |
692 | goto release; | |
693 | } | |
694 | ||
695 | release_firmware(firmware); | |
696 | ||
697 | /* Initialize and register HCI device */ | |
698 | hdev = hci_alloc_dev(); | |
699 | if (!hdev) { | |
700 | BT_ERR("Can't allocate HCI device"); | |
701 | goto error; | |
702 | } | |
703 | ||
704 | data->hdev = hdev; | |
705 | ||
706 | hdev->type = HCI_USB; | |
707 | hdev->driver_data = data; | |
708 | SET_HCIDEV_DEV(hdev, &intf->dev); | |
709 | ||
710 | hdev->open = bfusb_open; | |
711 | hdev->close = bfusb_close; | |
712 | hdev->flush = bfusb_flush; | |
713 | hdev->send = bfusb_send_frame; | |
714 | hdev->destruct = bfusb_destruct; | |
715 | hdev->ioctl = bfusb_ioctl; | |
716 | ||
717 | hdev->owner = THIS_MODULE; | |
718 | ||
719 | if (hci_register_dev(hdev) < 0) { | |
720 | BT_ERR("Can't register HCI device"); | |
721 | hci_free_dev(hdev); | |
722 | goto error; | |
723 | } | |
724 | ||
725 | usb_set_intfdata(intf, data); | |
726 | ||
727 | return 0; | |
728 | ||
729 | release: | |
730 | release_firmware(firmware); | |
731 | ||
732 | error: | |
733 | kfree(data); | |
734 | ||
735 | done: | |
736 | return -EIO; | |
737 | } | |
738 | ||
739 | static void bfusb_disconnect(struct usb_interface *intf) | |
740 | { | |
741 | struct bfusb_data *data = usb_get_intfdata(intf); | |
742 | struct hci_dev *hdev = data->hdev; | |
743 | ||
744 | BT_DBG("intf %p", intf); | |
745 | ||
746 | if (!hdev) | |
747 | return; | |
748 | ||
749 | usb_set_intfdata(intf, NULL); | |
750 | ||
751 | bfusb_close(hdev); | |
752 | ||
753 | if (hci_unregister_dev(hdev) < 0) | |
754 | BT_ERR("Can't unregister HCI device %s", hdev->name); | |
755 | ||
756 | hci_free_dev(hdev); | |
757 | } | |
758 | ||
759 | static struct usb_driver bfusb_driver = { | |
760 | .name = "bfusb", | |
761 | .probe = bfusb_probe, | |
762 | .disconnect = bfusb_disconnect, | |
763 | .id_table = bfusb_table, | |
764 | }; | |
765 | ||
766 | static int __init bfusb_init(void) | |
767 | { | |
768 | int err; | |
769 | ||
770 | BT_INFO("BlueFRITZ! USB driver ver %s", VERSION); | |
771 | ||
772 | err = usb_register(&bfusb_driver); | |
773 | if (err < 0) | |
774 | BT_ERR("Failed to register BlueFRITZ! USB driver"); | |
775 | ||
776 | return err; | |
777 | } | |
778 | ||
779 | static void __exit bfusb_exit(void) | |
780 | { | |
781 | usb_deregister(&bfusb_driver); | |
782 | } | |
783 | ||
784 | module_init(bfusb_init); | |
785 | module_exit(bfusb_exit); | |
786 | ||
787 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); | |
788 | MODULE_DESCRIPTION("BlueFRITZ! USB driver ver " VERSION); | |
789 | MODULE_VERSION(VERSION); | |
790 | MODULE_LICENSE("GPL"); | |
791 | MODULE_FIRMWARE("bfubase.frm"); |