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