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1da177e4 LT |
1 | /* |
2 | * | |
3 | * AVM BlueFRITZ! USB driver | |
4 | * | |
5 | * Copyright (C) 2003 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 | ||
1da177e4 LT |
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/sched.h> | |
31 | #include <linux/errno.h> | |
32 | #include <linux/skbuff.h> | |
33 | ||
34 | #include <linux/device.h> | |
35 | #include <linux/firmware.h> | |
36 | ||
37 | #include <linux/usb.h> | |
38 | ||
39 | #include <net/bluetooth/bluetooth.h> | |
40 | #include <net/bluetooth/hci_core.h> | |
41 | ||
42 | #ifndef CONFIG_BT_HCIBFUSB_DEBUG | |
43 | #undef BT_DBG | |
44 | #define BT_DBG(D...) | |
45 | #endif | |
46 | ||
47 | #define VERSION "1.1" | |
48 | ||
49 | static int ignore = 0; | |
50 | ||
51 | static struct usb_driver bfusb_driver; | |
52 | ||
53 | static struct usb_device_id bfusb_table[] = { | |
54 | /* AVM BlueFRITZ! USB */ | |
55 | { USB_DEVICE(0x057c, 0x2200) }, | |
56 | ||
57 | { } /* Terminating entry */ | |
58 | }; | |
59 | ||
60 | MODULE_DEVICE_TABLE(usb, bfusb_table); | |
61 | ||
62 | ||
63 | #define BFUSB_MAX_BLOCK_SIZE 256 | |
64 | ||
65 | #define BFUSB_BLOCK_TIMEOUT 3000 | |
66 | ||
67 | #define BFUSB_TX_PROCESS 1 | |
68 | #define BFUSB_TX_WAKEUP 2 | |
69 | ||
70 | #define BFUSB_MAX_BULK_TX 2 | |
71 | #define BFUSB_MAX_BULK_RX 2 | |
72 | ||
73 | struct bfusb { | |
74 | struct hci_dev *hdev; | |
75 | ||
76 | unsigned long state; | |
77 | ||
78 | struct usb_device *udev; | |
79 | ||
80 | unsigned int bulk_in_ep; | |
81 | unsigned int bulk_out_ep; | |
82 | unsigned int bulk_pkt_size; | |
83 | ||
84 | rwlock_t lock; | |
85 | ||
86 | struct sk_buff_head transmit_q; | |
87 | ||
88 | struct sk_buff *reassembly; | |
89 | ||
90 | atomic_t pending_tx; | |
91 | struct sk_buff_head pending_q; | |
92 | struct sk_buff_head completed_q; | |
93 | }; | |
94 | ||
95 | struct bfusb_scb { | |
96 | struct urb *urb; | |
97 | }; | |
98 | ||
99 | static void bfusb_tx_complete(struct urb *urb, struct pt_regs *regs); | |
100 | static void bfusb_rx_complete(struct urb *urb, struct pt_regs *regs); | |
101 | ||
102 | static struct urb *bfusb_get_completed(struct bfusb *bfusb) | |
103 | { | |
104 | struct sk_buff *skb; | |
105 | struct urb *urb = NULL; | |
106 | ||
107 | BT_DBG("bfusb %p", bfusb); | |
108 | ||
109 | skb = skb_dequeue(&bfusb->completed_q); | |
110 | if (skb) { | |
111 | urb = ((struct bfusb_scb *) skb->cb)->urb; | |
112 | kfree_skb(skb); | |
113 | } | |
114 | ||
115 | return urb; | |
116 | } | |
117 | ||
118 | static void bfusb_unlink_urbs(struct bfusb *bfusb) | |
119 | { | |
120 | struct sk_buff *skb; | |
121 | struct urb *urb; | |
122 | ||
123 | BT_DBG("bfusb %p", bfusb); | |
124 | ||
125 | while ((skb = skb_dequeue(&bfusb->pending_q))) { | |
126 | urb = ((struct bfusb_scb *) skb->cb)->urb; | |
127 | usb_kill_urb(urb); | |
128 | skb_queue_tail(&bfusb->completed_q, skb); | |
129 | } | |
130 | ||
131 | while ((urb = bfusb_get_completed(bfusb))) | |
132 | usb_free_urb(urb); | |
133 | } | |
134 | ||
135 | ||
136 | static int bfusb_send_bulk(struct bfusb *bfusb, struct sk_buff *skb) | |
137 | { | |
138 | struct bfusb_scb *scb = (void *) skb->cb; | |
139 | struct urb *urb = bfusb_get_completed(bfusb); | |
140 | int err, pipe; | |
141 | ||
142 | BT_DBG("bfusb %p skb %p len %d", bfusb, skb, skb->len); | |
143 | ||
144 | if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC))) | |
145 | return -ENOMEM; | |
146 | ||
147 | pipe = usb_sndbulkpipe(bfusb->udev, bfusb->bulk_out_ep); | |
148 | ||
149 | usb_fill_bulk_urb(urb, bfusb->udev, pipe, skb->data, skb->len, | |
150 | bfusb_tx_complete, skb); | |
151 | ||
152 | scb->urb = urb; | |
153 | ||
154 | skb_queue_tail(&bfusb->pending_q, skb); | |
155 | ||
156 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
157 | if (err) { | |
158 | BT_ERR("%s bulk tx submit failed urb %p err %d", | |
159 | bfusb->hdev->name, urb, err); | |
8728b834 | 160 | skb_unlink(skb, &bfusb->pending_q); |
1da177e4 LT |
161 | usb_free_urb(urb); |
162 | } else | |
163 | atomic_inc(&bfusb->pending_tx); | |
164 | ||
165 | return err; | |
166 | } | |
167 | ||
168 | static void bfusb_tx_wakeup(struct bfusb *bfusb) | |
169 | { | |
170 | struct sk_buff *skb; | |
171 | ||
172 | BT_DBG("bfusb %p", bfusb); | |
173 | ||
174 | if (test_and_set_bit(BFUSB_TX_PROCESS, &bfusb->state)) { | |
175 | set_bit(BFUSB_TX_WAKEUP, &bfusb->state); | |
176 | return; | |
177 | } | |
178 | ||
179 | do { | |
180 | clear_bit(BFUSB_TX_WAKEUP, &bfusb->state); | |
181 | ||
182 | while ((atomic_read(&bfusb->pending_tx) < BFUSB_MAX_BULK_TX) && | |
183 | (skb = skb_dequeue(&bfusb->transmit_q))) { | |
184 | if (bfusb_send_bulk(bfusb, skb) < 0) { | |
185 | skb_queue_head(&bfusb->transmit_q, skb); | |
186 | break; | |
187 | } | |
188 | } | |
189 | ||
190 | } while (test_bit(BFUSB_TX_WAKEUP, &bfusb->state)); | |
191 | ||
192 | clear_bit(BFUSB_TX_PROCESS, &bfusb->state); | |
193 | } | |
194 | ||
195 | static void bfusb_tx_complete(struct urb *urb, struct pt_regs *regs) | |
196 | { | |
197 | struct sk_buff *skb = (struct sk_buff *) urb->context; | |
198 | struct bfusb *bfusb = (struct bfusb *) skb->dev; | |
199 | ||
200 | BT_DBG("bfusb %p urb %p skb %p len %d", bfusb, urb, skb, skb->len); | |
201 | ||
202 | atomic_dec(&bfusb->pending_tx); | |
203 | ||
204 | if (!test_bit(HCI_RUNNING, &bfusb->hdev->flags)) | |
205 | return; | |
206 | ||
207 | if (!urb->status) | |
208 | bfusb->hdev->stat.byte_tx += skb->len; | |
209 | else | |
210 | bfusb->hdev->stat.err_tx++; | |
211 | ||
212 | read_lock(&bfusb->lock); | |
213 | ||
8728b834 | 214 | skb_unlink(skb, &bfusb->pending_q); |
1da177e4 LT |
215 | skb_queue_tail(&bfusb->completed_q, skb); |
216 | ||
217 | bfusb_tx_wakeup(bfusb); | |
218 | ||
219 | read_unlock(&bfusb->lock); | |
220 | } | |
221 | ||
222 | ||
223 | static int bfusb_rx_submit(struct bfusb *bfusb, struct urb *urb) | |
224 | { | |
225 | struct bfusb_scb *scb; | |
226 | struct sk_buff *skb; | |
227 | int err, pipe, size = HCI_MAX_FRAME_SIZE + 32; | |
228 | ||
229 | BT_DBG("bfusb %p urb %p", bfusb, urb); | |
230 | ||
231 | if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC))) | |
232 | return -ENOMEM; | |
233 | ||
234 | if (!(skb = bt_skb_alloc(size, GFP_ATOMIC))) { | |
235 | usb_free_urb(urb); | |
236 | return -ENOMEM; | |
237 | } | |
238 | ||
239 | skb->dev = (void *) bfusb; | |
240 | ||
241 | scb = (struct bfusb_scb *) skb->cb; | |
242 | scb->urb = urb; | |
243 | ||
244 | pipe = usb_rcvbulkpipe(bfusb->udev, bfusb->bulk_in_ep); | |
245 | ||
246 | usb_fill_bulk_urb(urb, bfusb->udev, pipe, skb->data, size, | |
247 | bfusb_rx_complete, skb); | |
248 | ||
249 | skb_queue_tail(&bfusb->pending_q, skb); | |
250 | ||
251 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
252 | if (err) { | |
253 | BT_ERR("%s bulk rx submit failed urb %p err %d", | |
254 | bfusb->hdev->name, urb, err); | |
8728b834 | 255 | skb_unlink(skb, &bfusb->pending_q); |
1da177e4 LT |
256 | kfree_skb(skb); |
257 | usb_free_urb(urb); | |
258 | } | |
259 | ||
260 | return err; | |
261 | } | |
262 | ||
263 | static inline int bfusb_recv_block(struct bfusb *bfusb, int hdr, unsigned char *data, int len) | |
264 | { | |
265 | BT_DBG("bfusb %p hdr 0x%02x data %p len %d", bfusb, hdr, data, len); | |
266 | ||
267 | if (hdr & 0x10) { | |
268 | BT_ERR("%s error in block", bfusb->hdev->name); | |
269 | if (bfusb->reassembly) | |
270 | kfree_skb(bfusb->reassembly); | |
271 | bfusb->reassembly = NULL; | |
272 | return -EIO; | |
273 | } | |
274 | ||
275 | if (hdr & 0x04) { | |
276 | struct sk_buff *skb; | |
277 | unsigned char pkt_type; | |
278 | int pkt_len = 0; | |
279 | ||
280 | if (bfusb->reassembly) { | |
281 | BT_ERR("%s unexpected start block", bfusb->hdev->name); | |
282 | kfree_skb(bfusb->reassembly); | |
283 | bfusb->reassembly = NULL; | |
284 | } | |
285 | ||
286 | if (len < 1) { | |
287 | BT_ERR("%s no packet type found", bfusb->hdev->name); | |
288 | return -EPROTO; | |
289 | } | |
290 | ||
291 | pkt_type = *data++; len--; | |
292 | ||
293 | switch (pkt_type) { | |
294 | case HCI_EVENT_PKT: | |
295 | if (len >= HCI_EVENT_HDR_SIZE) { | |
296 | struct hci_event_hdr *hdr = (struct hci_event_hdr *) data; | |
297 | pkt_len = HCI_EVENT_HDR_SIZE + hdr->plen; | |
298 | } else { | |
299 | BT_ERR("%s event block is too short", bfusb->hdev->name); | |
300 | return -EILSEQ; | |
301 | } | |
302 | break; | |
303 | ||
304 | case HCI_ACLDATA_PKT: | |
305 | if (len >= HCI_ACL_HDR_SIZE) { | |
306 | struct hci_acl_hdr *hdr = (struct hci_acl_hdr *) data; | |
307 | pkt_len = HCI_ACL_HDR_SIZE + __le16_to_cpu(hdr->dlen); | |
308 | } else { | |
309 | BT_ERR("%s data block is too short", bfusb->hdev->name); | |
310 | return -EILSEQ; | |
311 | } | |
312 | break; | |
313 | ||
314 | case HCI_SCODATA_PKT: | |
315 | if (len >= HCI_SCO_HDR_SIZE) { | |
316 | struct hci_sco_hdr *hdr = (struct hci_sco_hdr *) data; | |
317 | pkt_len = HCI_SCO_HDR_SIZE + hdr->dlen; | |
318 | } else { | |
319 | BT_ERR("%s audio block is too short", bfusb->hdev->name); | |
320 | return -EILSEQ; | |
321 | } | |
322 | break; | |
323 | } | |
324 | ||
325 | skb = bt_skb_alloc(pkt_len, GFP_ATOMIC); | |
326 | if (!skb) { | |
327 | BT_ERR("%s no memory for the packet", bfusb->hdev->name); | |
328 | return -ENOMEM; | |
329 | } | |
330 | ||
331 | skb->dev = (void *) bfusb->hdev; | |
0d48d939 | 332 | bt_cb(skb)->pkt_type = pkt_type; |
1da177e4 LT |
333 | |
334 | bfusb->reassembly = skb; | |
335 | } else { | |
336 | if (!bfusb->reassembly) { | |
337 | BT_ERR("%s unexpected continuation block", bfusb->hdev->name); | |
338 | return -EIO; | |
339 | } | |
340 | } | |
341 | ||
342 | if (len > 0) | |
343 | memcpy(skb_put(bfusb->reassembly, len), data, len); | |
344 | ||
345 | if (hdr & 0x08) { | |
346 | hci_recv_frame(bfusb->reassembly); | |
347 | bfusb->reassembly = NULL; | |
348 | } | |
349 | ||
350 | return 0; | |
351 | } | |
352 | ||
353 | static void bfusb_rx_complete(struct urb *urb, struct pt_regs *regs) | |
354 | { | |
355 | struct sk_buff *skb = (struct sk_buff *) urb->context; | |
356 | struct bfusb *bfusb = (struct bfusb *) skb->dev; | |
357 | unsigned char *buf = urb->transfer_buffer; | |
358 | int count = urb->actual_length; | |
359 | int err, hdr, len; | |
360 | ||
361 | BT_DBG("bfusb %p urb %p skb %p len %d", bfusb, urb, skb, skb->len); | |
362 | ||
363 | read_lock(&bfusb->lock); | |
364 | ||
365 | if (!test_bit(HCI_RUNNING, &bfusb->hdev->flags)) | |
366 | goto unlock; | |
367 | ||
368 | if (urb->status || !count) | |
369 | goto resubmit; | |
370 | ||
371 | bfusb->hdev->stat.byte_rx += count; | |
372 | ||
373 | skb_put(skb, count); | |
374 | ||
375 | while (count) { | |
376 | hdr = buf[0] | (buf[1] << 8); | |
377 | ||
378 | if (hdr & 0x4000) { | |
379 | len = 0; | |
380 | count -= 2; | |
381 | buf += 2; | |
382 | } else { | |
383 | len = (buf[2] == 0) ? 256 : buf[2]; | |
384 | count -= 3; | |
385 | buf += 3; | |
386 | } | |
387 | ||
388 | if (count < len) { | |
389 | BT_ERR("%s block extends over URB buffer ranges", | |
390 | bfusb->hdev->name); | |
391 | } | |
392 | ||
393 | if ((hdr & 0xe1) == 0xc1) | |
394 | bfusb_recv_block(bfusb, hdr, buf, len); | |
395 | ||
396 | count -= len; | |
397 | buf += len; | |
398 | } | |
399 | ||
8728b834 | 400 | skb_unlink(skb, &bfusb->pending_q); |
1da177e4 LT |
401 | kfree_skb(skb); |
402 | ||
403 | bfusb_rx_submit(bfusb, urb); | |
404 | ||
405 | read_unlock(&bfusb->lock); | |
406 | ||
407 | return; | |
408 | ||
409 | resubmit: | |
410 | urb->dev = bfusb->udev; | |
411 | ||
412 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
413 | if (err) { | |
414 | BT_ERR("%s bulk resubmit failed urb %p err %d", | |
415 | bfusb->hdev->name, urb, err); | |
416 | } | |
417 | ||
418 | unlock: | |
419 | read_unlock(&bfusb->lock); | |
420 | } | |
421 | ||
422 | ||
423 | static int bfusb_open(struct hci_dev *hdev) | |
424 | { | |
425 | struct bfusb *bfusb = (struct bfusb *) hdev->driver_data; | |
426 | unsigned long flags; | |
427 | int i, err; | |
428 | ||
429 | BT_DBG("hdev %p bfusb %p", hdev, bfusb); | |
430 | ||
431 | if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) | |
432 | return 0; | |
433 | ||
434 | write_lock_irqsave(&bfusb->lock, flags); | |
435 | ||
436 | err = bfusb_rx_submit(bfusb, NULL); | |
437 | if (!err) { | |
438 | for (i = 1; i < BFUSB_MAX_BULK_RX; i++) | |
439 | bfusb_rx_submit(bfusb, NULL); | |
440 | } else { | |
441 | clear_bit(HCI_RUNNING, &hdev->flags); | |
442 | } | |
443 | ||
444 | write_unlock_irqrestore(&bfusb->lock, flags); | |
445 | ||
446 | return err; | |
447 | } | |
448 | ||
449 | static int bfusb_flush(struct hci_dev *hdev) | |
450 | { | |
451 | struct bfusb *bfusb = (struct bfusb *) hdev->driver_data; | |
452 | ||
453 | BT_DBG("hdev %p bfusb %p", hdev, bfusb); | |
454 | ||
455 | skb_queue_purge(&bfusb->transmit_q); | |
456 | ||
457 | return 0; | |
458 | } | |
459 | ||
460 | static int bfusb_close(struct hci_dev *hdev) | |
461 | { | |
462 | struct bfusb *bfusb = (struct bfusb *) hdev->driver_data; | |
463 | unsigned long flags; | |
464 | ||
465 | BT_DBG("hdev %p bfusb %p", hdev, bfusb); | |
466 | ||
467 | if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) | |
468 | return 0; | |
469 | ||
470 | write_lock_irqsave(&bfusb->lock, flags); | |
471 | write_unlock_irqrestore(&bfusb->lock, flags); | |
472 | ||
473 | bfusb_unlink_urbs(bfusb); | |
474 | bfusb_flush(hdev); | |
475 | ||
476 | return 0; | |
477 | } | |
478 | ||
479 | static int bfusb_send_frame(struct sk_buff *skb) | |
480 | { | |
481 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; | |
482 | struct bfusb *bfusb; | |
483 | struct sk_buff *nskb; | |
484 | unsigned char buf[3]; | |
485 | int sent = 0, size, count; | |
486 | ||
0d48d939 | 487 | BT_DBG("hdev %p skb %p type %d len %d", hdev, skb, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 LT |
488 | |
489 | if (!hdev) { | |
490 | BT_ERR("Frame for unknown HCI device (hdev=NULL)"); | |
491 | return -ENODEV; | |
492 | } | |
493 | ||
494 | if (!test_bit(HCI_RUNNING, &hdev->flags)) | |
495 | return -EBUSY; | |
496 | ||
497 | bfusb = (struct bfusb *) hdev->driver_data; | |
498 | ||
0d48d939 | 499 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
500 | case HCI_COMMAND_PKT: |
501 | hdev->stat.cmd_tx++; | |
502 | break; | |
503 | case HCI_ACLDATA_PKT: | |
504 | hdev->stat.acl_tx++; | |
505 | break; | |
506 | case HCI_SCODATA_PKT: | |
507 | hdev->stat.sco_tx++; | |
508 | break; | |
509 | }; | |
510 | ||
511 | /* Prepend skb with frame type */ | |
0d48d939 | 512 | memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1); |
1da177e4 LT |
513 | |
514 | count = skb->len; | |
515 | ||
516 | /* Max HCI frame size seems to be 1511 + 1 */ | |
517 | if (!(nskb = bt_skb_alloc(count + 32, GFP_ATOMIC))) { | |
518 | BT_ERR("Can't allocate memory for new packet"); | |
519 | return -ENOMEM; | |
520 | } | |
521 | ||
522 | nskb->dev = (void *) bfusb; | |
523 | ||
524 | while (count) { | |
525 | size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE); | |
526 | ||
527 | buf[0] = 0xc1 | ((sent == 0) ? 0x04 : 0) | ((count == size) ? 0x08 : 0); | |
528 | buf[1] = 0x00; | |
529 | buf[2] = (size == BFUSB_MAX_BLOCK_SIZE) ? 0 : size; | |
530 | ||
531 | memcpy(skb_put(nskb, 3), buf, 3); | |
532 | memcpy(skb_put(nskb, size), skb->data + sent, size); | |
533 | ||
534 | sent += size; | |
535 | count -= size; | |
536 | } | |
537 | ||
538 | /* Don't send frame with multiple size of bulk max packet */ | |
539 | if ((nskb->len % bfusb->bulk_pkt_size) == 0) { | |
540 | buf[0] = 0xdd; | |
541 | buf[1] = 0x00; | |
542 | memcpy(skb_put(nskb, 2), buf, 2); | |
543 | } | |
544 | ||
545 | read_lock(&bfusb->lock); | |
546 | ||
547 | skb_queue_tail(&bfusb->transmit_q, nskb); | |
548 | bfusb_tx_wakeup(bfusb); | |
549 | ||
550 | read_unlock(&bfusb->lock); | |
551 | ||
552 | kfree_skb(skb); | |
553 | ||
554 | return 0; | |
555 | } | |
556 | ||
557 | static void bfusb_destruct(struct hci_dev *hdev) | |
558 | { | |
559 | struct bfusb *bfusb = (struct bfusb *) hdev->driver_data; | |
560 | ||
561 | BT_DBG("hdev %p bfusb %p", hdev, bfusb); | |
562 | ||
563 | kfree(bfusb); | |
564 | } | |
565 | ||
566 | static int bfusb_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg) | |
567 | { | |
568 | return -ENOIOCTLCMD; | |
569 | } | |
570 | ||
571 | ||
572 | static int bfusb_load_firmware(struct bfusb *bfusb, unsigned char *firmware, int count) | |
573 | { | |
574 | unsigned char *buf; | |
575 | int err, pipe, len, size, sent = 0; | |
576 | ||
577 | BT_DBG("bfusb %p udev %p", bfusb, bfusb->udev); | |
578 | ||
579 | BT_INFO("BlueFRITZ! USB loading firmware"); | |
580 | ||
581 | pipe = usb_sndctrlpipe(bfusb->udev, 0); | |
582 | ||
583 | if (usb_control_msg(bfusb->udev, pipe, USB_REQ_SET_CONFIGURATION, | |
584 | 0, 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT) < 0) { | |
585 | BT_ERR("Can't change to loading configuration"); | |
586 | return -EBUSY; | |
587 | } | |
588 | ||
589 | bfusb->udev->toggle[0] = bfusb->udev->toggle[1] = 0; | |
590 | ||
591 | buf = kmalloc(BFUSB_MAX_BLOCK_SIZE + 3, GFP_ATOMIC); | |
592 | if (!buf) { | |
593 | BT_ERR("Can't allocate memory chunk for firmware"); | |
594 | return -ENOMEM; | |
595 | } | |
596 | ||
597 | pipe = usb_sndbulkpipe(bfusb->udev, bfusb->bulk_out_ep); | |
598 | ||
599 | while (count) { | |
600 | size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE + 3); | |
601 | ||
602 | memcpy(buf, firmware + sent, size); | |
603 | ||
604 | err = usb_bulk_msg(bfusb->udev, pipe, buf, size, | |
605 | &len, BFUSB_BLOCK_TIMEOUT); | |
606 | ||
607 | if (err || (len != size)) { | |
608 | BT_ERR("Error in firmware loading"); | |
609 | goto error; | |
610 | } | |
611 | ||
612 | sent += size; | |
613 | count -= size; | |
614 | } | |
615 | ||
616 | if ((err = usb_bulk_msg(bfusb->udev, pipe, NULL, 0, | |
617 | &len, BFUSB_BLOCK_TIMEOUT)) < 0) { | |
618 | BT_ERR("Error in null packet request"); | |
619 | goto error; | |
620 | } | |
621 | ||
622 | pipe = usb_sndctrlpipe(bfusb->udev, 0); | |
623 | ||
624 | if ((err = usb_control_msg(bfusb->udev, pipe, USB_REQ_SET_CONFIGURATION, | |
625 | 0, 2, 0, NULL, 0, USB_CTRL_SET_TIMEOUT)) < 0) { | |
626 | BT_ERR("Can't change to running configuration"); | |
627 | goto error; | |
628 | } | |
629 | ||
630 | bfusb->udev->toggle[0] = bfusb->udev->toggle[1] = 0; | |
631 | ||
632 | BT_INFO("BlueFRITZ! USB device ready"); | |
633 | ||
634 | kfree(buf); | |
635 | return 0; | |
636 | ||
637 | error: | |
638 | kfree(buf); | |
639 | ||
640 | pipe = usb_sndctrlpipe(bfusb->udev, 0); | |
641 | ||
642 | usb_control_msg(bfusb->udev, pipe, USB_REQ_SET_CONFIGURATION, | |
643 | 0, 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); | |
644 | ||
645 | return err; | |
646 | } | |
647 | ||
648 | static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *id) | |
649 | { | |
650 | const struct firmware *firmware; | |
651 | struct usb_device *udev = interface_to_usbdev(intf); | |
652 | struct usb_host_endpoint *bulk_out_ep; | |
653 | struct usb_host_endpoint *bulk_in_ep; | |
654 | struct hci_dev *hdev; | |
655 | struct bfusb *bfusb; | |
656 | ||
657 | BT_DBG("intf %p id %p", intf, id); | |
658 | ||
659 | if (ignore) | |
660 | return -ENODEV; | |
661 | ||
662 | /* Check number of endpoints */ | |
663 | if (intf->cur_altsetting->desc.bNumEndpoints < 2) | |
664 | return -EIO; | |
665 | ||
666 | bulk_out_ep = &intf->cur_altsetting->endpoint[0]; | |
667 | bulk_in_ep = &intf->cur_altsetting->endpoint[1]; | |
668 | ||
669 | if (!bulk_out_ep || !bulk_in_ep) { | |
670 | BT_ERR("Bulk endpoints not found"); | |
671 | goto done; | |
672 | } | |
673 | ||
674 | /* Initialize control structure and load firmware */ | |
089b1dbb | 675 | if (!(bfusb = kzalloc(sizeof(struct bfusb), GFP_KERNEL))) { |
1da177e4 LT |
676 | BT_ERR("Can't allocate memory for control structure"); |
677 | goto done; | |
678 | } | |
679 | ||
1da177e4 LT |
680 | bfusb->udev = udev; |
681 | bfusb->bulk_in_ep = bulk_in_ep->desc.bEndpointAddress; | |
682 | bfusb->bulk_out_ep = bulk_out_ep->desc.bEndpointAddress; | |
683 | bfusb->bulk_pkt_size = le16_to_cpu(bulk_out_ep->desc.wMaxPacketSize); | |
684 | ||
685 | rwlock_init(&bfusb->lock); | |
686 | ||
687 | bfusb->reassembly = NULL; | |
688 | ||
689 | skb_queue_head_init(&bfusb->transmit_q); | |
690 | skb_queue_head_init(&bfusb->pending_q); | |
691 | skb_queue_head_init(&bfusb->completed_q); | |
692 | ||
693 | if (request_firmware(&firmware, "bfubase.frm", &udev->dev) < 0) { | |
694 | BT_ERR("Firmware request failed"); | |
695 | goto error; | |
696 | } | |
697 | ||
698 | BT_DBG("firmware data %p size %d", firmware->data, firmware->size); | |
699 | ||
700 | if (bfusb_load_firmware(bfusb, firmware->data, firmware->size) < 0) { | |
701 | BT_ERR("Firmware loading failed"); | |
702 | goto release; | |
703 | } | |
704 | ||
705 | release_firmware(firmware); | |
706 | ||
707 | /* Initialize and register HCI device */ | |
708 | hdev = hci_alloc_dev(); | |
709 | if (!hdev) { | |
710 | BT_ERR("Can't allocate HCI device"); | |
711 | goto error; | |
712 | } | |
713 | ||
714 | bfusb->hdev = hdev; | |
715 | ||
716 | hdev->type = HCI_USB; | |
717 | hdev->driver_data = bfusb; | |
718 | SET_HCIDEV_DEV(hdev, &intf->dev); | |
719 | ||
720 | hdev->open = bfusb_open; | |
721 | hdev->close = bfusb_close; | |
722 | hdev->flush = bfusb_flush; | |
723 | hdev->send = bfusb_send_frame; | |
724 | hdev->destruct = bfusb_destruct; | |
725 | hdev->ioctl = bfusb_ioctl; | |
726 | ||
727 | hdev->owner = THIS_MODULE; | |
728 | ||
729 | if (hci_register_dev(hdev) < 0) { | |
730 | BT_ERR("Can't register HCI device"); | |
731 | hci_free_dev(hdev); | |
732 | goto error; | |
733 | } | |
734 | ||
735 | usb_set_intfdata(intf, bfusb); | |
736 | ||
737 | return 0; | |
738 | ||
739 | release: | |
740 | release_firmware(firmware); | |
741 | ||
742 | error: | |
743 | kfree(bfusb); | |
744 | ||
745 | done: | |
746 | return -EIO; | |
747 | } | |
748 | ||
749 | static void bfusb_disconnect(struct usb_interface *intf) | |
750 | { | |
751 | struct bfusb *bfusb = usb_get_intfdata(intf); | |
752 | struct hci_dev *hdev = bfusb->hdev; | |
753 | ||
754 | BT_DBG("intf %p", intf); | |
755 | ||
756 | if (!hdev) | |
757 | return; | |
758 | ||
759 | usb_set_intfdata(intf, NULL); | |
760 | ||
761 | bfusb_close(hdev); | |
762 | ||
763 | if (hci_unregister_dev(hdev) < 0) | |
764 | BT_ERR("Can't unregister HCI device %s", hdev->name); | |
765 | ||
766 | hci_free_dev(hdev); | |
767 | } | |
768 | ||
769 | static struct usb_driver bfusb_driver = { | |
1da177e4 LT |
770 | .name = "bfusb", |
771 | .probe = bfusb_probe, | |
772 | .disconnect = bfusb_disconnect, | |
773 | .id_table = bfusb_table, | |
774 | }; | |
775 | ||
776 | static int __init bfusb_init(void) | |
777 | { | |
778 | int err; | |
779 | ||
780 | BT_INFO("BlueFRITZ! USB driver ver %s", VERSION); | |
781 | ||
782 | if ((err = usb_register(&bfusb_driver)) < 0) | |
783 | BT_ERR("Failed to register BlueFRITZ! USB driver"); | |
784 | ||
785 | return err; | |
786 | } | |
787 | ||
788 | static void __exit bfusb_exit(void) | |
789 | { | |
790 | usb_deregister(&bfusb_driver); | |
791 | } | |
792 | ||
793 | module_init(bfusb_init); | |
794 | module_exit(bfusb_exit); | |
795 | ||
796 | module_param(ignore, bool, 0644); | |
797 | MODULE_PARM_DESC(ignore, "Ignore devices from the matching table"); | |
798 | ||
799 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); | |
800 | MODULE_DESCRIPTION("BlueFRITZ! USB driver ver " VERSION); | |
801 | MODULE_VERSION(VERSION); | |
802 | MODULE_LICENSE("GPL"); |