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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * | |
3 | * AVM BlueFRITZ! USB driver | |
4 | * | |
9c724357 | 5 | * Copyright (C) 2003-2006 Marcel Holtmann <marcel@holtmann.org> |
1da177e4 LT |
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> | |
1da177e4 LT |
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 | #ifndef CONFIG_BT_HCIBFUSB_DEBUG | |
42 | #undef BT_DBG | |
43 | #define BT_DBG(D...) | |
44 | #endif | |
45 | ||
46 | #define VERSION "1.1" | |
47 | ||
48 | static int ignore = 0; | |
49 | ||
50 | static struct usb_driver bfusb_driver; | |
51 | ||
52 | static struct usb_device_id bfusb_table[] = { | |
53 | /* AVM BlueFRITZ! USB */ | |
54 | { USB_DEVICE(0x057c, 0x2200) }, | |
55 | ||
56 | { } /* Terminating entry */ | |
57 | }; | |
58 | ||
59 | MODULE_DEVICE_TABLE(usb, bfusb_table); | |
60 | ||
1da177e4 LT |
61 | #define BFUSB_MAX_BLOCK_SIZE 256 |
62 | ||
63 | #define BFUSB_BLOCK_TIMEOUT 3000 | |
64 | ||
65 | #define BFUSB_TX_PROCESS 1 | |
66 | #define BFUSB_TX_WAKEUP 2 | |
67 | ||
68 | #define BFUSB_MAX_BULK_TX 2 | |
69 | #define BFUSB_MAX_BULK_RX 2 | |
70 | ||
9c724357 | 71 | struct bfusb_data { |
1da177e4 LT |
72 | struct hci_dev *hdev; |
73 | ||
74 | unsigned long state; | |
75 | ||
76 | struct usb_device *udev; | |
77 | ||
78 | unsigned int bulk_in_ep; | |
79 | unsigned int bulk_out_ep; | |
80 | unsigned int bulk_pkt_size; | |
81 | ||
82 | rwlock_t lock; | |
83 | ||
84 | struct sk_buff_head transmit_q; | |
85 | ||
86 | struct sk_buff *reassembly; | |
87 | ||
88 | atomic_t pending_tx; | |
89 | struct sk_buff_head pending_q; | |
90 | struct sk_buff_head completed_q; | |
91 | }; | |
92 | ||
9c724357 | 93 | struct bfusb_data_scb { |
1da177e4 LT |
94 | struct urb *urb; |
95 | }; | |
96 | ||
7d12e780 DH |
97 | static void bfusb_tx_complete(struct urb *urb); |
98 | static void bfusb_rx_complete(struct urb *urb); | |
1da177e4 | 99 | |
9c724357 | 100 | static struct urb *bfusb_get_completed(struct bfusb_data *data) |
1da177e4 LT |
101 | { |
102 | struct sk_buff *skb; | |
103 | struct urb *urb = NULL; | |
104 | ||
9c724357 | 105 | BT_DBG("bfusb %p", data); |
1da177e4 | 106 | |
9c724357 | 107 | skb = skb_dequeue(&data->completed_q); |
1da177e4 | 108 | if (skb) { |
9c724357 | 109 | urb = ((struct bfusb_data_scb *) skb->cb)->urb; |
1da177e4 LT |
110 | kfree_skb(skb); |
111 | } | |
112 | ||
113 | return urb; | |
114 | } | |
115 | ||
9c724357 | 116 | static void bfusb_unlink_urbs(struct bfusb_data *data) |
1da177e4 LT |
117 | { |
118 | struct sk_buff *skb; | |
119 | struct urb *urb; | |
120 | ||
9c724357 | 121 | BT_DBG("bfusb %p", data); |
1da177e4 | 122 | |
9c724357 MH |
123 | while ((skb = skb_dequeue(&data->pending_q))) { |
124 | urb = ((struct bfusb_data_scb *) skb->cb)->urb; | |
1da177e4 | 125 | usb_kill_urb(urb); |
9c724357 | 126 | skb_queue_tail(&data->completed_q, skb); |
1da177e4 LT |
127 | } |
128 | ||
9c724357 | 129 | while ((urb = bfusb_get_completed(data))) |
1da177e4 LT |
130 | usb_free_urb(urb); |
131 | } | |
132 | ||
9c724357 | 133 | static int bfusb_send_bulk(struct bfusb_data *data, struct sk_buff *skb) |
1da177e4 | 134 | { |
9c724357 MH |
135 | struct bfusb_data_scb *scb = (void *) skb->cb; |
136 | struct urb *urb = bfusb_get_completed(data); | |
1da177e4 LT |
137 | int err, pipe; |
138 | ||
9c724357 | 139 | BT_DBG("bfusb %p skb %p len %d", data, skb, skb->len); |
1da177e4 LT |
140 | |
141 | if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC))) | |
142 | return -ENOMEM; | |
143 | ||
9c724357 | 144 | pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep); |
1da177e4 | 145 | |
9c724357 | 146 | usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, skb->len, |
1da177e4 LT |
147 | bfusb_tx_complete, skb); |
148 | ||
149 | scb->urb = urb; | |
150 | ||
9c724357 | 151 | skb_queue_tail(&data->pending_q, skb); |
1da177e4 LT |
152 | |
153 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
154 | if (err) { | |
155 | BT_ERR("%s bulk tx submit failed urb %p err %d", | |
9c724357 MH |
156 | data->hdev->name, urb, err); |
157 | skb_unlink(skb, &data->pending_q); | |
1da177e4 LT |
158 | usb_free_urb(urb); |
159 | } else | |
9c724357 | 160 | atomic_inc(&data->pending_tx); |
1da177e4 LT |
161 | |
162 | return err; | |
163 | } | |
164 | ||
9c724357 | 165 | static void bfusb_tx_wakeup(struct bfusb_data *data) |
1da177e4 LT |
166 | { |
167 | struct sk_buff *skb; | |
168 | ||
9c724357 | 169 | BT_DBG("bfusb %p", data); |
1da177e4 | 170 | |
9c724357 MH |
171 | if (test_and_set_bit(BFUSB_TX_PROCESS, &data->state)) { |
172 | set_bit(BFUSB_TX_WAKEUP, &data->state); | |
1da177e4 LT |
173 | return; |
174 | } | |
175 | ||
176 | do { | |
9c724357 | 177 | clear_bit(BFUSB_TX_WAKEUP, &data->state); |
1da177e4 | 178 | |
9c724357 MH |
179 | while ((atomic_read(&data->pending_tx) < BFUSB_MAX_BULK_TX) && |
180 | (skb = skb_dequeue(&data->transmit_q))) { | |
181 | if (bfusb_send_bulk(data, skb) < 0) { | |
182 | skb_queue_head(&data->transmit_q, skb); | |
1da177e4 LT |
183 | break; |
184 | } | |
185 | } | |
186 | ||
9c724357 | 187 | } while (test_bit(BFUSB_TX_WAKEUP, &data->state)); |
1da177e4 | 188 | |
9c724357 | 189 | clear_bit(BFUSB_TX_PROCESS, &data->state); |
1da177e4 LT |
190 | } |
191 | ||
7d12e780 | 192 | static void bfusb_tx_complete(struct urb *urb) |
1da177e4 LT |
193 | { |
194 | struct sk_buff *skb = (struct sk_buff *) urb->context; | |
9c724357 | 195 | struct bfusb_data *data = (struct bfusb_data *) skb->dev; |
1da177e4 | 196 | |
9c724357 | 197 | BT_DBG("bfusb %p urb %p skb %p len %d", data, urb, skb, skb->len); |
1da177e4 | 198 | |
9c724357 | 199 | atomic_dec(&data->pending_tx); |
1da177e4 | 200 | |
9c724357 | 201 | if (!test_bit(HCI_RUNNING, &data->hdev->flags)) |
1da177e4 LT |
202 | return; |
203 | ||
204 | if (!urb->status) | |
9c724357 | 205 | data->hdev->stat.byte_tx += skb->len; |
1da177e4 | 206 | else |
9c724357 | 207 | data->hdev->stat.err_tx++; |
1da177e4 | 208 | |
9c724357 | 209 | read_lock(&data->lock); |
1da177e4 | 210 | |
9c724357 MH |
211 | skb_unlink(skb, &data->pending_q); |
212 | skb_queue_tail(&data->completed_q, skb); | |
1da177e4 | 213 | |
9c724357 | 214 | bfusb_tx_wakeup(data); |
1da177e4 | 215 | |
9c724357 | 216 | read_unlock(&data->lock); |
1da177e4 LT |
217 | } |
218 | ||
219 | ||
9c724357 | 220 | static int bfusb_rx_submit(struct bfusb_data *data, struct urb *urb) |
1da177e4 | 221 | { |
9c724357 | 222 | struct bfusb_data_scb *scb; |
1da177e4 LT |
223 | struct sk_buff *skb; |
224 | int err, pipe, size = HCI_MAX_FRAME_SIZE + 32; | |
225 | ||
226 | BT_DBG("bfusb %p urb %p", bfusb, urb); | |
227 | ||
228 | if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC))) | |
229 | return -ENOMEM; | |
230 | ||
9c724357 MH |
231 | skb = bt_skb_alloc(size, GFP_ATOMIC); |
232 | if (!skb) { | |
1da177e4 LT |
233 | usb_free_urb(urb); |
234 | return -ENOMEM; | |
235 | } | |
236 | ||
9c724357 | 237 | skb->dev = (void *) data; |
1da177e4 | 238 | |
9c724357 | 239 | scb = (struct bfusb_data_scb *) skb->cb; |
1da177e4 LT |
240 | scb->urb = urb; |
241 | ||
9c724357 | 242 | pipe = usb_rcvbulkpipe(data->udev, data->bulk_in_ep); |
1da177e4 | 243 | |
9c724357 | 244 | usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, size, |
1da177e4 LT |
245 | bfusb_rx_complete, skb); |
246 | ||
9c724357 | 247 | skb_queue_tail(&data->pending_q, skb); |
1da177e4 LT |
248 | |
249 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
250 | if (err) { | |
251 | BT_ERR("%s bulk rx submit failed urb %p err %d", | |
9c724357 MH |
252 | data->hdev->name, urb, err); |
253 | skb_unlink(skb, &data->pending_q); | |
1da177e4 LT |
254 | kfree_skb(skb); |
255 | usb_free_urb(urb); | |
256 | } | |
257 | ||
258 | return err; | |
259 | } | |
260 | ||
9c724357 | 261 | static inline int bfusb_recv_block(struct bfusb_data *data, int hdr, unsigned char *buf, int len) |
1da177e4 | 262 | { |
9c724357 | 263 | BT_DBG("bfusb %p hdr 0x%02x data %p len %d", data, hdr, buf, len); |
1da177e4 LT |
264 | |
265 | if (hdr & 0x10) { | |
9c724357 MH |
266 | BT_ERR("%s error in block", data->hdev->name); |
267 | if (data->reassembly) | |
268 | kfree_skb(data->reassembly); | |
269 | data->reassembly = NULL; | |
1da177e4 LT |
270 | return -EIO; |
271 | } | |
272 | ||
273 | if (hdr & 0x04) { | |
274 | struct sk_buff *skb; | |
275 | unsigned char pkt_type; | |
276 | int pkt_len = 0; | |
277 | ||
9c724357 MH |
278 | if (data->reassembly) { |
279 | BT_ERR("%s unexpected start block", data->hdev->name); | |
280 | kfree_skb(data->reassembly); | |
281 | data->reassembly = NULL; | |
1da177e4 LT |
282 | } |
283 | ||
284 | if (len < 1) { | |
9c724357 | 285 | BT_ERR("%s no packet type found", data->hdev->name); |
1da177e4 LT |
286 | return -EPROTO; |
287 | } | |
288 | ||
9c724357 | 289 | pkt_type = *buf++; len--; |
1da177e4 LT |
290 | |
291 | switch (pkt_type) { | |
292 | case HCI_EVENT_PKT: | |
293 | if (len >= HCI_EVENT_HDR_SIZE) { | |
9c724357 | 294 | struct hci_event_hdr *hdr = (struct hci_event_hdr *) buf; |
1da177e4 LT |
295 | pkt_len = HCI_EVENT_HDR_SIZE + hdr->plen; |
296 | } else { | |
9c724357 | 297 | BT_ERR("%s event block is too short", data->hdev->name); |
1da177e4 LT |
298 | return -EILSEQ; |
299 | } | |
300 | break; | |
301 | ||
302 | case HCI_ACLDATA_PKT: | |
303 | if (len >= HCI_ACL_HDR_SIZE) { | |
9c724357 | 304 | struct hci_acl_hdr *hdr = (struct hci_acl_hdr *) buf; |
1da177e4 LT |
305 | pkt_len = HCI_ACL_HDR_SIZE + __le16_to_cpu(hdr->dlen); |
306 | } else { | |
9c724357 | 307 | BT_ERR("%s data block is too short", data->hdev->name); |
1da177e4 LT |
308 | return -EILSEQ; |
309 | } | |
310 | break; | |
311 | ||
312 | case HCI_SCODATA_PKT: | |
313 | if (len >= HCI_SCO_HDR_SIZE) { | |
9c724357 | 314 | struct hci_sco_hdr *hdr = (struct hci_sco_hdr *) buf; |
1da177e4 LT |
315 | pkt_len = HCI_SCO_HDR_SIZE + hdr->dlen; |
316 | } else { | |
9c724357 | 317 | BT_ERR("%s audio block is too short", data->hdev->name); |
1da177e4 LT |
318 | return -EILSEQ; |
319 | } | |
320 | break; | |
321 | } | |
322 | ||
323 | skb = bt_skb_alloc(pkt_len, GFP_ATOMIC); | |
324 | if (!skb) { | |
9c724357 | 325 | BT_ERR("%s no memory for the packet", data->hdev->name); |
1da177e4 LT |
326 | return -ENOMEM; |
327 | } | |
328 | ||
9c724357 | 329 | skb->dev = (void *) data->hdev; |
0d48d939 | 330 | bt_cb(skb)->pkt_type = pkt_type; |
1da177e4 | 331 | |
9c724357 | 332 | data->reassembly = skb; |
1da177e4 | 333 | } else { |
9c724357 MH |
334 | if (!data->reassembly) { |
335 | BT_ERR("%s unexpected continuation block", data->hdev->name); | |
1da177e4 LT |
336 | return -EIO; |
337 | } | |
338 | } | |
339 | ||
340 | if (len > 0) | |
9c724357 | 341 | memcpy(skb_put(data->reassembly, len), buf, len); |
1da177e4 LT |
342 | |
343 | if (hdr & 0x08) { | |
9c724357 MH |
344 | hci_recv_frame(data->reassembly); |
345 | data->reassembly = NULL; | |
1da177e4 LT |
346 | } |
347 | ||
348 | return 0; | |
349 | } | |
350 | ||
7d12e780 | 351 | static void bfusb_rx_complete(struct urb *urb) |
1da177e4 LT |
352 | { |
353 | struct sk_buff *skb = (struct sk_buff *) urb->context; | |
9c724357 | 354 | struct bfusb_data *data = (struct bfusb_data *) skb->dev; |
1da177e4 LT |
355 | unsigned char *buf = urb->transfer_buffer; |
356 | int count = urb->actual_length; | |
357 | int err, hdr, len; | |
358 | ||
359 | BT_DBG("bfusb %p urb %p skb %p len %d", bfusb, urb, skb, skb->len); | |
360 | ||
9c724357 | 361 | read_lock(&data->lock); |
1da177e4 | 362 | |
9c724357 | 363 | if (!test_bit(HCI_RUNNING, &data->hdev->flags)) |
1da177e4 LT |
364 | goto unlock; |
365 | ||
366 | if (urb->status || !count) | |
367 | goto resubmit; | |
368 | ||
9c724357 | 369 | data->hdev->stat.byte_rx += count; |
1da177e4 LT |
370 | |
371 | skb_put(skb, count); | |
372 | ||
373 | while (count) { | |
374 | hdr = buf[0] | (buf[1] << 8); | |
375 | ||
376 | if (hdr & 0x4000) { | |
377 | len = 0; | |
378 | count -= 2; | |
379 | buf += 2; | |
380 | } else { | |
381 | len = (buf[2] == 0) ? 256 : buf[2]; | |
382 | count -= 3; | |
383 | buf += 3; | |
384 | } | |
385 | ||
386 | if (count < len) { | |
387 | BT_ERR("%s block extends over URB buffer ranges", | |
9c724357 | 388 | data->hdev->name); |
1da177e4 LT |
389 | } |
390 | ||
391 | if ((hdr & 0xe1) == 0xc1) | |
9c724357 | 392 | bfusb_recv_block(data, hdr, buf, len); |
1da177e4 LT |
393 | |
394 | count -= len; | |
395 | buf += len; | |
396 | } | |
397 | ||
9c724357 | 398 | skb_unlink(skb, &data->pending_q); |
1da177e4 LT |
399 | kfree_skb(skb); |
400 | ||
9c724357 | 401 | bfusb_rx_submit(data, urb); |
1da177e4 | 402 | |
9c724357 | 403 | read_unlock(&data->lock); |
1da177e4 LT |
404 | |
405 | return; | |
406 | ||
407 | resubmit: | |
9c724357 | 408 | urb->dev = data->udev; |
1da177e4 LT |
409 | |
410 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
411 | if (err) { | |
412 | BT_ERR("%s bulk resubmit failed urb %p err %d", | |
9c724357 | 413 | data->hdev->name, urb, err); |
1da177e4 LT |
414 | } |
415 | ||
416 | unlock: | |
9c724357 | 417 | read_unlock(&data->lock); |
1da177e4 LT |
418 | } |
419 | ||
1da177e4 LT |
420 | static int bfusb_open(struct hci_dev *hdev) |
421 | { | |
9c724357 | 422 | struct bfusb_data *data = hdev->driver_data; |
1da177e4 LT |
423 | unsigned long flags; |
424 | int i, err; | |
425 | ||
9c724357 | 426 | BT_DBG("hdev %p bfusb %p", hdev, data); |
1da177e4 LT |
427 | |
428 | if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) | |
429 | return 0; | |
430 | ||
9c724357 | 431 | write_lock_irqsave(&data->lock, flags); |
1da177e4 | 432 | |
9c724357 | 433 | err = bfusb_rx_submit(data, NULL); |
1da177e4 LT |
434 | if (!err) { |
435 | for (i = 1; i < BFUSB_MAX_BULK_RX; i++) | |
9c724357 | 436 | bfusb_rx_submit(data, NULL); |
1da177e4 LT |
437 | } else { |
438 | clear_bit(HCI_RUNNING, &hdev->flags); | |
439 | } | |
440 | ||
9c724357 | 441 | write_unlock_irqrestore(&data->lock, flags); |
1da177e4 LT |
442 | |
443 | return err; | |
444 | } | |
445 | ||
446 | static int bfusb_flush(struct hci_dev *hdev) | |
447 | { | |
9c724357 | 448 | struct bfusb_data *data = hdev->driver_data; |
1da177e4 | 449 | |
9c724357 | 450 | BT_DBG("hdev %p bfusb %p", hdev, data); |
1da177e4 | 451 | |
9c724357 | 452 | skb_queue_purge(&data->transmit_q); |
1da177e4 LT |
453 | |
454 | return 0; | |
455 | } | |
456 | ||
457 | static int bfusb_close(struct hci_dev *hdev) | |
458 | { | |
9c724357 | 459 | struct bfusb_data *data = hdev->driver_data; |
1da177e4 LT |
460 | unsigned long flags; |
461 | ||
9c724357 | 462 | BT_DBG("hdev %p bfusb %p", hdev, data); |
1da177e4 LT |
463 | |
464 | if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) | |
465 | return 0; | |
466 | ||
9c724357 MH |
467 | write_lock_irqsave(&data->lock, flags); |
468 | write_unlock_irqrestore(&data->lock, flags); | |
1da177e4 | 469 | |
9c724357 | 470 | bfusb_unlink_urbs(data); |
1da177e4 LT |
471 | bfusb_flush(hdev); |
472 | ||
473 | return 0; | |
474 | } | |
475 | ||
476 | static int bfusb_send_frame(struct sk_buff *skb) | |
477 | { | |
478 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; | |
9c724357 | 479 | struct bfusb_data *data; |
1da177e4 LT |
480 | struct sk_buff *nskb; |
481 | unsigned char buf[3]; | |
482 | int sent = 0, size, count; | |
483 | ||
0d48d939 | 484 | BT_DBG("hdev %p skb %p type %d len %d", hdev, skb, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 LT |
485 | |
486 | if (!hdev) { | |
487 | BT_ERR("Frame for unknown HCI device (hdev=NULL)"); | |
488 | return -ENODEV; | |
489 | } | |
490 | ||
491 | if (!test_bit(HCI_RUNNING, &hdev->flags)) | |
492 | return -EBUSY; | |
493 | ||
9c724357 | 494 | data = hdev->driver_data; |
1da177e4 | 495 | |
0d48d939 | 496 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
497 | case HCI_COMMAND_PKT: |
498 | hdev->stat.cmd_tx++; | |
499 | break; | |
500 | case HCI_ACLDATA_PKT: | |
501 | hdev->stat.acl_tx++; | |
502 | break; | |
503 | case HCI_SCODATA_PKT: | |
504 | hdev->stat.sco_tx++; | |
505 | break; | |
506 | }; | |
507 | ||
508 | /* Prepend skb with frame type */ | |
0d48d939 | 509 | memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1); |
1da177e4 LT |
510 | |
511 | count = skb->len; | |
512 | ||
513 | /* Max HCI frame size seems to be 1511 + 1 */ | |
9c724357 MH |
514 | nskb = bt_skb_alloc(count + 32, GFP_ATOMIC); |
515 | if (!nskb) { | |
1da177e4 LT |
516 | BT_ERR("Can't allocate memory for new packet"); |
517 | return -ENOMEM; | |
518 | } | |
519 | ||
9c724357 | 520 | nskb->dev = (void *) data; |
1da177e4 LT |
521 | |
522 | while (count) { | |
523 | size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE); | |
524 | ||
525 | buf[0] = 0xc1 | ((sent == 0) ? 0x04 : 0) | ((count == size) ? 0x08 : 0); | |
526 | buf[1] = 0x00; | |
527 | buf[2] = (size == BFUSB_MAX_BLOCK_SIZE) ? 0 : size; | |
528 | ||
529 | memcpy(skb_put(nskb, 3), buf, 3); | |
530 | memcpy(skb_put(nskb, size), skb->data + sent, size); | |
531 | ||
532 | sent += size; | |
533 | count -= size; | |
534 | } | |
535 | ||
536 | /* Don't send frame with multiple size of bulk max packet */ | |
9c724357 | 537 | if ((nskb->len % data->bulk_pkt_size) == 0) { |
1da177e4 LT |
538 | buf[0] = 0xdd; |
539 | buf[1] = 0x00; | |
540 | memcpy(skb_put(nskb, 2), buf, 2); | |
541 | } | |
542 | ||
9c724357 | 543 | read_lock(&data->lock); |
1da177e4 | 544 | |
9c724357 MH |
545 | skb_queue_tail(&data->transmit_q, nskb); |
546 | bfusb_tx_wakeup(data); | |
1da177e4 | 547 | |
9c724357 | 548 | read_unlock(&data->lock); |
1da177e4 LT |
549 | |
550 | kfree_skb(skb); | |
551 | ||
552 | return 0; | |
553 | } | |
554 | ||
555 | static void bfusb_destruct(struct hci_dev *hdev) | |
556 | { | |
9c724357 | 557 | struct bfusb_data *data = hdev->driver_data; |
1da177e4 | 558 | |
9c724357 | 559 | BT_DBG("hdev %p bfusb %p", hdev, data); |
1da177e4 | 560 | |
9c724357 | 561 | kfree(data); |
1da177e4 LT |
562 | } |
563 | ||
564 | static int bfusb_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg) | |
565 | { | |
566 | return -ENOIOCTLCMD; | |
567 | } | |
568 | ||
9c724357 | 569 | static int bfusb_load_firmware(struct bfusb_data *data, unsigned char *firmware, int count) |
1da177e4 LT |
570 | { |
571 | unsigned char *buf; | |
572 | int err, pipe, len, size, sent = 0; | |
573 | ||
9c724357 | 574 | BT_DBG("bfusb %p udev %p", data, data->udev); |
1da177e4 LT |
575 | |
576 | BT_INFO("BlueFRITZ! USB loading firmware"); | |
577 | ||
9c724357 | 578 | pipe = usb_sndctrlpipe(data->udev, 0); |
1da177e4 | 579 | |
9c724357 | 580 | if (usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION, |
1da177e4 LT |
581 | 0, 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT) < 0) { |
582 | BT_ERR("Can't change to loading configuration"); | |
583 | return -EBUSY; | |
584 | } | |
585 | ||
9c724357 | 586 | data->udev->toggle[0] = data->udev->toggle[1] = 0; |
1da177e4 LT |
587 | |
588 | buf = kmalloc(BFUSB_MAX_BLOCK_SIZE + 3, GFP_ATOMIC); | |
589 | if (!buf) { | |
590 | BT_ERR("Can't allocate memory chunk for firmware"); | |
591 | return -ENOMEM; | |
592 | } | |
593 | ||
9c724357 | 594 | pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep); |
1da177e4 LT |
595 | |
596 | while (count) { | |
597 | size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE + 3); | |
598 | ||
599 | memcpy(buf, firmware + sent, size); | |
600 | ||
9c724357 | 601 | err = usb_bulk_msg(data->udev, pipe, buf, size, |
1da177e4 LT |
602 | &len, BFUSB_BLOCK_TIMEOUT); |
603 | ||
604 | if (err || (len != size)) { | |
605 | BT_ERR("Error in firmware loading"); | |
606 | goto error; | |
607 | } | |
608 | ||
609 | sent += size; | |
610 | count -= size; | |
611 | } | |
612 | ||
9c724357 MH |
613 | err = usb_bulk_msg(data->udev, pipe, NULL, 0, |
614 | &len, BFUSB_BLOCK_TIMEOUT); | |
615 | if (err < 0) { | |
1da177e4 LT |
616 | BT_ERR("Error in null packet request"); |
617 | goto error; | |
618 | } | |
619 | ||
9c724357 | 620 | pipe = usb_sndctrlpipe(data->udev, 0); |
1da177e4 | 621 | |
9c724357 MH |
622 | err = usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION, |
623 | 0, 2, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); | |
624 | if (err < 0) { | |
1da177e4 LT |
625 | BT_ERR("Can't change to running configuration"); |
626 | goto error; | |
627 | } | |
628 | ||
9c724357 | 629 | data->udev->toggle[0] = data->udev->toggle[1] = 0; |
1da177e4 LT |
630 | |
631 | BT_INFO("BlueFRITZ! USB device ready"); | |
632 | ||
633 | kfree(buf); | |
634 | return 0; | |
635 | ||
636 | error: | |
637 | kfree(buf); | |
638 | ||
9c724357 | 639 | pipe = usb_sndctrlpipe(data->udev, 0); |
1da177e4 | 640 | |
9c724357 | 641 | usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION, |
1da177e4 LT |
642 | 0, 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); |
643 | ||
644 | return err; | |
645 | } | |
646 | ||
647 | static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *id) | |
648 | { | |
649 | const struct firmware *firmware; | |
650 | struct usb_device *udev = interface_to_usbdev(intf); | |
651 | struct usb_host_endpoint *bulk_out_ep; | |
652 | struct usb_host_endpoint *bulk_in_ep; | |
653 | struct hci_dev *hdev; | |
9c724357 | 654 | struct bfusb_data *data; |
1da177e4 LT |
655 | |
656 | BT_DBG("intf %p id %p", intf, id); | |
657 | ||
658 | if (ignore) | |
659 | return -ENODEV; | |
660 | ||
661 | /* Check number of endpoints */ | |
662 | if (intf->cur_altsetting->desc.bNumEndpoints < 2) | |
663 | return -EIO; | |
664 | ||
665 | bulk_out_ep = &intf->cur_altsetting->endpoint[0]; | |
666 | bulk_in_ep = &intf->cur_altsetting->endpoint[1]; | |
667 | ||
668 | if (!bulk_out_ep || !bulk_in_ep) { | |
669 | BT_ERR("Bulk endpoints not found"); | |
670 | goto done; | |
671 | } | |
672 | ||
673 | /* Initialize control structure and load firmware */ | |
9c724357 MH |
674 | data = kzalloc(sizeof(struct bfusb_data), GFP_KERNEL); |
675 | if (!data) { | |
1da177e4 LT |
676 | BT_ERR("Can't allocate memory for control structure"); |
677 | goto done; | |
678 | } | |
679 | ||
9c724357 MH |
680 | data->udev = udev; |
681 | data->bulk_in_ep = bulk_in_ep->desc.bEndpointAddress; | |
682 | data->bulk_out_ep = bulk_out_ep->desc.bEndpointAddress; | |
683 | data->bulk_pkt_size = le16_to_cpu(bulk_out_ep->desc.wMaxPacketSize); | |
1da177e4 | 684 | |
9c724357 | 685 | rwlock_init(&data->lock); |
1da177e4 | 686 | |
9c724357 | 687 | data->reassembly = NULL; |
1da177e4 | 688 | |
9c724357 MH |
689 | skb_queue_head_init(&data->transmit_q); |
690 | skb_queue_head_init(&data->pending_q); | |
691 | skb_queue_head_init(&data->completed_q); | |
1da177e4 LT |
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 | ||
9c724357 | 700 | if (bfusb_load_firmware(data, firmware->data, firmware->size) < 0) { |
1da177e4 LT |
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 | ||
9c724357 | 714 | data->hdev = hdev; |
1da177e4 LT |
715 | |
716 | hdev->type = HCI_USB; | |
9c724357 | 717 | hdev->driver_data = data; |
1da177e4 LT |
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 | ||
9c724357 | 735 | usb_set_intfdata(intf, data); |
1da177e4 LT |
736 | |
737 | return 0; | |
738 | ||
739 | release: | |
740 | release_firmware(firmware); | |
741 | ||
742 | error: | |
9c724357 | 743 | kfree(data); |
1da177e4 LT |
744 | |
745 | done: | |
746 | return -EIO; | |
747 | } | |
748 | ||
749 | static void bfusb_disconnect(struct usb_interface *intf) | |
750 | { | |
9c724357 MH |
751 | struct bfusb_data *data = usb_get_intfdata(intf); |
752 | struct hci_dev *hdev = data->hdev; | |
1da177e4 LT |
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 | ||
9c724357 MH |
782 | err = usb_register(&bfusb_driver); |
783 | if (err < 0) | |
1da177e4 LT |
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"); | |
2312119a | 804 | MODULE_FIRMWARE("bfubase.frm"); |