Commit | Line | Data |
---|---|---|
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 | ||
943d56b0 | 46 | #define VERSION "1.2" |
1da177e4 LT |
47 | |
48 | static struct usb_driver bfusb_driver; | |
49 | ||
50 | static struct usb_device_id bfusb_table[] = { | |
51 | /* AVM BlueFRITZ! USB */ | |
52 | { USB_DEVICE(0x057c, 0x2200) }, | |
53 | ||
54 | { } /* Terminating entry */ | |
55 | }; | |
56 | ||
57 | MODULE_DEVICE_TABLE(usb, bfusb_table); | |
58 | ||
1da177e4 LT |
59 | #define BFUSB_MAX_BLOCK_SIZE 256 |
60 | ||
61 | #define BFUSB_BLOCK_TIMEOUT 3000 | |
62 | ||
63 | #define BFUSB_TX_PROCESS 1 | |
64 | #define BFUSB_TX_WAKEUP 2 | |
65 | ||
66 | #define BFUSB_MAX_BULK_TX 2 | |
67 | #define BFUSB_MAX_BULK_RX 2 | |
68 | ||
9c724357 | 69 | struct bfusb_data { |
1da177e4 LT |
70 | struct hci_dev *hdev; |
71 | ||
72 | unsigned long state; | |
73 | ||
74 | struct usb_device *udev; | |
75 | ||
76 | unsigned int bulk_in_ep; | |
77 | unsigned int bulk_out_ep; | |
78 | unsigned int bulk_pkt_size; | |
79 | ||
80 | rwlock_t lock; | |
81 | ||
82 | struct sk_buff_head transmit_q; | |
83 | ||
84 | struct sk_buff *reassembly; | |
85 | ||
86 | atomic_t pending_tx; | |
87 | struct sk_buff_head pending_q; | |
88 | struct sk_buff_head completed_q; | |
89 | }; | |
90 | ||
9c724357 | 91 | struct bfusb_data_scb { |
1da177e4 LT |
92 | struct urb *urb; |
93 | }; | |
94 | ||
7d12e780 DH |
95 | static void bfusb_tx_complete(struct urb *urb); |
96 | static void bfusb_rx_complete(struct urb *urb); | |
1da177e4 | 97 | |
9c724357 | 98 | static struct urb *bfusb_get_completed(struct bfusb_data *data) |
1da177e4 LT |
99 | { |
100 | struct sk_buff *skb; | |
101 | struct urb *urb = NULL; | |
102 | ||
9c724357 | 103 | BT_DBG("bfusb %p", data); |
1da177e4 | 104 | |
9c724357 | 105 | skb = skb_dequeue(&data->completed_q); |
1da177e4 | 106 | if (skb) { |
9c724357 | 107 | urb = ((struct bfusb_data_scb *) skb->cb)->urb; |
1da177e4 LT |
108 | kfree_skb(skb); |
109 | } | |
110 | ||
111 | return urb; | |
112 | } | |
113 | ||
9c724357 | 114 | static void bfusb_unlink_urbs(struct bfusb_data *data) |
1da177e4 LT |
115 | { |
116 | struct sk_buff *skb; | |
117 | struct urb *urb; | |
118 | ||
9c724357 | 119 | BT_DBG("bfusb %p", data); |
1da177e4 | 120 | |
9c724357 MH |
121 | while ((skb = skb_dequeue(&data->pending_q))) { |
122 | urb = ((struct bfusb_data_scb *) skb->cb)->urb; | |
1da177e4 | 123 | usb_kill_urb(urb); |
9c724357 | 124 | skb_queue_tail(&data->completed_q, skb); |
1da177e4 LT |
125 | } |
126 | ||
9c724357 | 127 | while ((urb = bfusb_get_completed(data))) |
1da177e4 LT |
128 | usb_free_urb(urb); |
129 | } | |
130 | ||
9c724357 | 131 | static int bfusb_send_bulk(struct bfusb_data *data, struct sk_buff *skb) |
1da177e4 | 132 | { |
9c724357 MH |
133 | struct bfusb_data_scb *scb = (void *) skb->cb; |
134 | struct urb *urb = bfusb_get_completed(data); | |
1da177e4 LT |
135 | int err, pipe; |
136 | ||
9c724357 | 137 | BT_DBG("bfusb %p skb %p len %d", data, skb, skb->len); |
1da177e4 LT |
138 | |
139 | if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC))) | |
140 | return -ENOMEM; | |
141 | ||
9c724357 | 142 | pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep); |
1da177e4 | 143 | |
9c724357 | 144 | usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, skb->len, |
1da177e4 LT |
145 | bfusb_tx_complete, skb); |
146 | ||
147 | scb->urb = urb; | |
148 | ||
9c724357 | 149 | skb_queue_tail(&data->pending_q, skb); |
1da177e4 LT |
150 | |
151 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
152 | if (err) { | |
153 | BT_ERR("%s bulk tx submit failed urb %p err %d", | |
9c724357 MH |
154 | data->hdev->name, urb, err); |
155 | skb_unlink(skb, &data->pending_q); | |
1da177e4 LT |
156 | usb_free_urb(urb); |
157 | } else | |
9c724357 | 158 | atomic_inc(&data->pending_tx); |
1da177e4 LT |
159 | |
160 | return err; | |
161 | } | |
162 | ||
9c724357 | 163 | static void bfusb_tx_wakeup(struct bfusb_data *data) |
1da177e4 LT |
164 | { |
165 | struct sk_buff *skb; | |
166 | ||
9c724357 | 167 | BT_DBG("bfusb %p", data); |
1da177e4 | 168 | |
9c724357 MH |
169 | if (test_and_set_bit(BFUSB_TX_PROCESS, &data->state)) { |
170 | set_bit(BFUSB_TX_WAKEUP, &data->state); | |
1da177e4 LT |
171 | return; |
172 | } | |
173 | ||
174 | do { | |
9c724357 | 175 | clear_bit(BFUSB_TX_WAKEUP, &data->state); |
1da177e4 | 176 | |
9c724357 MH |
177 | while ((atomic_read(&data->pending_tx) < BFUSB_MAX_BULK_TX) && |
178 | (skb = skb_dequeue(&data->transmit_q))) { | |
179 | if (bfusb_send_bulk(data, skb) < 0) { | |
180 | skb_queue_head(&data->transmit_q, skb); | |
1da177e4 LT |
181 | break; |
182 | } | |
183 | } | |
184 | ||
9c724357 | 185 | } while (test_bit(BFUSB_TX_WAKEUP, &data->state)); |
1da177e4 | 186 | |
9c724357 | 187 | clear_bit(BFUSB_TX_PROCESS, &data->state); |
1da177e4 LT |
188 | } |
189 | ||
7d12e780 | 190 | static void bfusb_tx_complete(struct urb *urb) |
1da177e4 LT |
191 | { |
192 | struct sk_buff *skb = (struct sk_buff *) urb->context; | |
9c724357 | 193 | struct bfusb_data *data = (struct bfusb_data *) skb->dev; |
1da177e4 | 194 | |
9c724357 | 195 | BT_DBG("bfusb %p urb %p skb %p len %d", data, urb, skb, skb->len); |
1da177e4 | 196 | |
9c724357 | 197 | atomic_dec(&data->pending_tx); |
1da177e4 | 198 | |
9c724357 | 199 | if (!test_bit(HCI_RUNNING, &data->hdev->flags)) |
1da177e4 LT |
200 | return; |
201 | ||
202 | if (!urb->status) | |
9c724357 | 203 | data->hdev->stat.byte_tx += skb->len; |
1da177e4 | 204 | else |
9c724357 | 205 | data->hdev->stat.err_tx++; |
1da177e4 | 206 | |
9c724357 | 207 | read_lock(&data->lock); |
1da177e4 | 208 | |
9c724357 MH |
209 | skb_unlink(skb, &data->pending_q); |
210 | skb_queue_tail(&data->completed_q, skb); | |
1da177e4 | 211 | |
9c724357 | 212 | bfusb_tx_wakeup(data); |
1da177e4 | 213 | |
9c724357 | 214 | read_unlock(&data->lock); |
1da177e4 LT |
215 | } |
216 | ||
217 | ||
9c724357 | 218 | static int bfusb_rx_submit(struct bfusb_data *data, struct urb *urb) |
1da177e4 | 219 | { |
9c724357 | 220 | struct bfusb_data_scb *scb; |
1da177e4 LT |
221 | struct sk_buff *skb; |
222 | int err, pipe, size = HCI_MAX_FRAME_SIZE + 32; | |
223 | ||
224 | BT_DBG("bfusb %p urb %p", bfusb, urb); | |
225 | ||
226 | if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC))) | |
227 | return -ENOMEM; | |
228 | ||
9c724357 MH |
229 | skb = bt_skb_alloc(size, GFP_ATOMIC); |
230 | if (!skb) { | |
1da177e4 LT |
231 | usb_free_urb(urb); |
232 | return -ENOMEM; | |
233 | } | |
234 | ||
9c724357 | 235 | skb->dev = (void *) data; |
1da177e4 | 236 | |
9c724357 | 237 | scb = (struct bfusb_data_scb *) skb->cb; |
1da177e4 LT |
238 | scb->urb = urb; |
239 | ||
9c724357 | 240 | pipe = usb_rcvbulkpipe(data->udev, data->bulk_in_ep); |
1da177e4 | 241 | |
9c724357 | 242 | usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, size, |
1da177e4 LT |
243 | bfusb_rx_complete, skb); |
244 | ||
9c724357 | 245 | skb_queue_tail(&data->pending_q, skb); |
1da177e4 LT |
246 | |
247 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
248 | if (err) { | |
249 | BT_ERR("%s bulk rx submit failed urb %p err %d", | |
9c724357 MH |
250 | data->hdev->name, urb, err); |
251 | skb_unlink(skb, &data->pending_q); | |
1da177e4 LT |
252 | kfree_skb(skb); |
253 | usb_free_urb(urb); | |
254 | } | |
255 | ||
256 | return err; | |
257 | } | |
258 | ||
9c724357 | 259 | static inline int bfusb_recv_block(struct bfusb_data *data, int hdr, unsigned char *buf, int len) |
1da177e4 | 260 | { |
9c724357 | 261 | BT_DBG("bfusb %p hdr 0x%02x data %p len %d", data, hdr, buf, len); |
1da177e4 LT |
262 | |
263 | if (hdr & 0x10) { | |
9c724357 MH |
264 | BT_ERR("%s error in block", data->hdev->name); |
265 | if (data->reassembly) | |
266 | kfree_skb(data->reassembly); | |
267 | data->reassembly = NULL; | |
1da177e4 LT |
268 | return -EIO; |
269 | } | |
270 | ||
271 | if (hdr & 0x04) { | |
272 | struct sk_buff *skb; | |
273 | unsigned char pkt_type; | |
274 | int pkt_len = 0; | |
275 | ||
9c724357 MH |
276 | if (data->reassembly) { |
277 | BT_ERR("%s unexpected start block", data->hdev->name); | |
278 | kfree_skb(data->reassembly); | |
279 | data->reassembly = NULL; | |
1da177e4 LT |
280 | } |
281 | ||
282 | if (len < 1) { | |
9c724357 | 283 | BT_ERR("%s no packet type found", data->hdev->name); |
1da177e4 LT |
284 | return -EPROTO; |
285 | } | |
286 | ||
9c724357 | 287 | pkt_type = *buf++; len--; |
1da177e4 LT |
288 | |
289 | switch (pkt_type) { | |
290 | case HCI_EVENT_PKT: | |
291 | if (len >= HCI_EVENT_HDR_SIZE) { | |
9c724357 | 292 | struct hci_event_hdr *hdr = (struct hci_event_hdr *) buf; |
1da177e4 LT |
293 | pkt_len = HCI_EVENT_HDR_SIZE + hdr->plen; |
294 | } else { | |
9c724357 | 295 | BT_ERR("%s event block is too short", data->hdev->name); |
1da177e4 LT |
296 | return -EILSEQ; |
297 | } | |
298 | break; | |
299 | ||
300 | case HCI_ACLDATA_PKT: | |
301 | if (len >= HCI_ACL_HDR_SIZE) { | |
9c724357 | 302 | struct hci_acl_hdr *hdr = (struct hci_acl_hdr *) buf; |
1da177e4 LT |
303 | pkt_len = HCI_ACL_HDR_SIZE + __le16_to_cpu(hdr->dlen); |
304 | } else { | |
9c724357 | 305 | BT_ERR("%s data block is too short", data->hdev->name); |
1da177e4 LT |
306 | return -EILSEQ; |
307 | } | |
308 | break; | |
309 | ||
310 | case HCI_SCODATA_PKT: | |
311 | if (len >= HCI_SCO_HDR_SIZE) { | |
9c724357 | 312 | struct hci_sco_hdr *hdr = (struct hci_sco_hdr *) buf; |
1da177e4 LT |
313 | pkt_len = HCI_SCO_HDR_SIZE + hdr->dlen; |
314 | } else { | |
9c724357 | 315 | BT_ERR("%s audio block is too short", data->hdev->name); |
1da177e4 LT |
316 | return -EILSEQ; |
317 | } | |
318 | break; | |
319 | } | |
320 | ||
321 | skb = bt_skb_alloc(pkt_len, GFP_ATOMIC); | |
322 | if (!skb) { | |
9c724357 | 323 | BT_ERR("%s no memory for the packet", data->hdev->name); |
1da177e4 LT |
324 | return -ENOMEM; |
325 | } | |
326 | ||
9c724357 | 327 | skb->dev = (void *) data->hdev; |
0d48d939 | 328 | bt_cb(skb)->pkt_type = pkt_type; |
1da177e4 | 329 | |
9c724357 | 330 | data->reassembly = skb; |
1da177e4 | 331 | } else { |
9c724357 MH |
332 | if (!data->reassembly) { |
333 | BT_ERR("%s unexpected continuation block", data->hdev->name); | |
1da177e4 LT |
334 | return -EIO; |
335 | } | |
336 | } | |
337 | ||
338 | if (len > 0) | |
9c724357 | 339 | memcpy(skb_put(data->reassembly, len), buf, len); |
1da177e4 LT |
340 | |
341 | if (hdr & 0x08) { | |
9c724357 MH |
342 | hci_recv_frame(data->reassembly); |
343 | data->reassembly = NULL; | |
1da177e4 LT |
344 | } |
345 | ||
346 | return 0; | |
347 | } | |
348 | ||
7d12e780 | 349 | static void bfusb_rx_complete(struct urb *urb) |
1da177e4 LT |
350 | { |
351 | struct sk_buff *skb = (struct sk_buff *) urb->context; | |
9c724357 | 352 | struct bfusb_data *data = (struct bfusb_data *) skb->dev; |
1da177e4 LT |
353 | unsigned char *buf = urb->transfer_buffer; |
354 | int count = urb->actual_length; | |
355 | int err, hdr, len; | |
356 | ||
357 | BT_DBG("bfusb %p urb %p skb %p len %d", bfusb, urb, skb, skb->len); | |
358 | ||
9c724357 | 359 | read_lock(&data->lock); |
1da177e4 | 360 | |
9c724357 | 361 | if (!test_bit(HCI_RUNNING, &data->hdev->flags)) |
1da177e4 LT |
362 | goto unlock; |
363 | ||
364 | if (urb->status || !count) | |
365 | goto resubmit; | |
366 | ||
9c724357 | 367 | data->hdev->stat.byte_rx += count; |
1da177e4 LT |
368 | |
369 | skb_put(skb, count); | |
370 | ||
371 | while (count) { | |
372 | hdr = buf[0] | (buf[1] << 8); | |
373 | ||
374 | if (hdr & 0x4000) { | |
375 | len = 0; | |
376 | count -= 2; | |
377 | buf += 2; | |
378 | } else { | |
379 | len = (buf[2] == 0) ? 256 : buf[2]; | |
380 | count -= 3; | |
381 | buf += 3; | |
382 | } | |
383 | ||
384 | if (count < len) { | |
385 | BT_ERR("%s block extends over URB buffer ranges", | |
9c724357 | 386 | data->hdev->name); |
1da177e4 LT |
387 | } |
388 | ||
389 | if ((hdr & 0xe1) == 0xc1) | |
9c724357 | 390 | bfusb_recv_block(data, hdr, buf, len); |
1da177e4 LT |
391 | |
392 | count -= len; | |
393 | buf += len; | |
394 | } | |
395 | ||
9c724357 | 396 | skb_unlink(skb, &data->pending_q); |
1da177e4 LT |
397 | kfree_skb(skb); |
398 | ||
9c724357 | 399 | bfusb_rx_submit(data, urb); |
1da177e4 | 400 | |
9c724357 | 401 | read_unlock(&data->lock); |
1da177e4 LT |
402 | |
403 | return; | |
404 | ||
405 | resubmit: | |
9c724357 | 406 | urb->dev = data->udev; |
1da177e4 LT |
407 | |
408 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
409 | if (err) { | |
410 | BT_ERR("%s bulk resubmit failed urb %p err %d", | |
9c724357 | 411 | data->hdev->name, urb, err); |
1da177e4 LT |
412 | } |
413 | ||
414 | unlock: | |
9c724357 | 415 | read_unlock(&data->lock); |
1da177e4 LT |
416 | } |
417 | ||
1da177e4 LT |
418 | static int bfusb_open(struct hci_dev *hdev) |
419 | { | |
9c724357 | 420 | struct bfusb_data *data = hdev->driver_data; |
1da177e4 LT |
421 | unsigned long flags; |
422 | int i, err; | |
423 | ||
9c724357 | 424 | BT_DBG("hdev %p bfusb %p", hdev, data); |
1da177e4 LT |
425 | |
426 | if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) | |
427 | return 0; | |
428 | ||
9c724357 | 429 | write_lock_irqsave(&data->lock, flags); |
1da177e4 | 430 | |
9c724357 | 431 | err = bfusb_rx_submit(data, NULL); |
1da177e4 LT |
432 | if (!err) { |
433 | for (i = 1; i < BFUSB_MAX_BULK_RX; i++) | |
9c724357 | 434 | bfusb_rx_submit(data, NULL); |
1da177e4 LT |
435 | } else { |
436 | clear_bit(HCI_RUNNING, &hdev->flags); | |
437 | } | |
438 | ||
9c724357 | 439 | write_unlock_irqrestore(&data->lock, flags); |
1da177e4 LT |
440 | |
441 | return err; | |
442 | } | |
443 | ||
444 | static int bfusb_flush(struct hci_dev *hdev) | |
445 | { | |
9c724357 | 446 | struct bfusb_data *data = hdev->driver_data; |
1da177e4 | 447 | |
9c724357 | 448 | BT_DBG("hdev %p bfusb %p", hdev, data); |
1da177e4 | 449 | |
9c724357 | 450 | skb_queue_purge(&data->transmit_q); |
1da177e4 LT |
451 | |
452 | return 0; | |
453 | } | |
454 | ||
455 | static int bfusb_close(struct hci_dev *hdev) | |
456 | { | |
9c724357 | 457 | struct bfusb_data *data = hdev->driver_data; |
1da177e4 LT |
458 | unsigned long flags; |
459 | ||
9c724357 | 460 | BT_DBG("hdev %p bfusb %p", hdev, data); |
1da177e4 LT |
461 | |
462 | if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) | |
463 | return 0; | |
464 | ||
9c724357 MH |
465 | write_lock_irqsave(&data->lock, flags); |
466 | write_unlock_irqrestore(&data->lock, flags); | |
1da177e4 | 467 | |
9c724357 | 468 | bfusb_unlink_urbs(data); |
1da177e4 LT |
469 | bfusb_flush(hdev); |
470 | ||
471 | return 0; | |
472 | } | |
473 | ||
474 | static int bfusb_send_frame(struct sk_buff *skb) | |
475 | { | |
476 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; | |
9c724357 | 477 | struct bfusb_data *data; |
1da177e4 LT |
478 | struct sk_buff *nskb; |
479 | unsigned char buf[3]; | |
480 | int sent = 0, size, count; | |
481 | ||
0d48d939 | 482 | BT_DBG("hdev %p skb %p type %d len %d", hdev, skb, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 LT |
483 | |
484 | if (!hdev) { | |
485 | BT_ERR("Frame for unknown HCI device (hdev=NULL)"); | |
486 | return -ENODEV; | |
487 | } | |
488 | ||
489 | if (!test_bit(HCI_RUNNING, &hdev->flags)) | |
490 | return -EBUSY; | |
491 | ||
9c724357 | 492 | data = hdev->driver_data; |
1da177e4 | 493 | |
0d48d939 | 494 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
495 | case HCI_COMMAND_PKT: |
496 | hdev->stat.cmd_tx++; | |
497 | break; | |
498 | case HCI_ACLDATA_PKT: | |
499 | hdev->stat.acl_tx++; | |
500 | break; | |
501 | case HCI_SCODATA_PKT: | |
502 | hdev->stat.sco_tx++; | |
503 | break; | |
504 | }; | |
505 | ||
506 | /* Prepend skb with frame type */ | |
0d48d939 | 507 | memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1); |
1da177e4 LT |
508 | |
509 | count = skb->len; | |
510 | ||
511 | /* Max HCI frame size seems to be 1511 + 1 */ | |
9c724357 MH |
512 | nskb = bt_skb_alloc(count + 32, GFP_ATOMIC); |
513 | if (!nskb) { | |
1da177e4 LT |
514 | BT_ERR("Can't allocate memory for new packet"); |
515 | return -ENOMEM; | |
516 | } | |
517 | ||
9c724357 | 518 | nskb->dev = (void *) data; |
1da177e4 LT |
519 | |
520 | while (count) { | |
521 | size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE); | |
522 | ||
523 | buf[0] = 0xc1 | ((sent == 0) ? 0x04 : 0) | ((count == size) ? 0x08 : 0); | |
524 | buf[1] = 0x00; | |
525 | buf[2] = (size == BFUSB_MAX_BLOCK_SIZE) ? 0 : size; | |
526 | ||
527 | memcpy(skb_put(nskb, 3), buf, 3); | |
d626f62b | 528 | skb_copy_from_linear_data_offset(skb, sent, skb_put(nskb, size), size); |
1da177e4 LT |
529 | |
530 | sent += size; | |
531 | count -= size; | |
532 | } | |
533 | ||
534 | /* Don't send frame with multiple size of bulk max packet */ | |
9c724357 | 535 | if ((nskb->len % data->bulk_pkt_size) == 0) { |
1da177e4 LT |
536 | buf[0] = 0xdd; |
537 | buf[1] = 0x00; | |
538 | memcpy(skb_put(nskb, 2), buf, 2); | |
539 | } | |
540 | ||
9c724357 | 541 | read_lock(&data->lock); |
1da177e4 | 542 | |
9c724357 MH |
543 | skb_queue_tail(&data->transmit_q, nskb); |
544 | bfusb_tx_wakeup(data); | |
1da177e4 | 545 | |
9c724357 | 546 | read_unlock(&data->lock); |
1da177e4 LT |
547 | |
548 | kfree_skb(skb); | |
549 | ||
550 | return 0; | |
551 | } | |
552 | ||
553 | static void bfusb_destruct(struct hci_dev *hdev) | |
554 | { | |
9c724357 | 555 | struct bfusb_data *data = hdev->driver_data; |
1da177e4 | 556 | |
9c724357 | 557 | BT_DBG("hdev %p bfusb %p", hdev, data); |
1da177e4 | 558 | |
9c724357 | 559 | kfree(data); |
1da177e4 LT |
560 | } |
561 | ||
562 | static int bfusb_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg) | |
563 | { | |
564 | return -ENOIOCTLCMD; | |
565 | } | |
566 | ||
8187b4fb DW |
567 | static int bfusb_load_firmware(struct bfusb_data *data, |
568 | const unsigned char *firmware, int count) | |
1da177e4 LT |
569 | { |
570 | unsigned char *buf; | |
571 | int err, pipe, len, size, sent = 0; | |
572 | ||
9c724357 | 573 | BT_DBG("bfusb %p udev %p", data, data->udev); |
1da177e4 LT |
574 | |
575 | BT_INFO("BlueFRITZ! USB loading firmware"); | |
576 | ||
9c724357 | 577 | pipe = usb_sndctrlpipe(data->udev, 0); |
1da177e4 | 578 | |
9c724357 | 579 | if (usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION, |
1da177e4 LT |
580 | 0, 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT) < 0) { |
581 | BT_ERR("Can't change to loading configuration"); | |
582 | return -EBUSY; | |
583 | } | |
584 | ||
9c724357 | 585 | data->udev->toggle[0] = data->udev->toggle[1] = 0; |
1da177e4 LT |
586 | |
587 | buf = kmalloc(BFUSB_MAX_BLOCK_SIZE + 3, GFP_ATOMIC); | |
588 | if (!buf) { | |
589 | BT_ERR("Can't allocate memory chunk for firmware"); | |
590 | return -ENOMEM; | |
591 | } | |
592 | ||
9c724357 | 593 | pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep); |
1da177e4 LT |
594 | |
595 | while (count) { | |
596 | size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE + 3); | |
597 | ||
598 | memcpy(buf, firmware + sent, size); | |
599 | ||
9c724357 | 600 | err = usb_bulk_msg(data->udev, pipe, buf, size, |
1da177e4 LT |
601 | &len, BFUSB_BLOCK_TIMEOUT); |
602 | ||
603 | if (err || (len != size)) { | |
604 | BT_ERR("Error in firmware loading"); | |
605 | goto error; | |
606 | } | |
607 | ||
608 | sent += size; | |
609 | count -= size; | |
610 | } | |
611 | ||
9c724357 MH |
612 | err = usb_bulk_msg(data->udev, pipe, NULL, 0, |
613 | &len, BFUSB_BLOCK_TIMEOUT); | |
614 | if (err < 0) { | |
1da177e4 LT |
615 | BT_ERR("Error in null packet request"); |
616 | goto error; | |
617 | } | |
618 | ||
9c724357 | 619 | pipe = usb_sndctrlpipe(data->udev, 0); |
1da177e4 | 620 | |
9c724357 MH |
621 | err = usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION, |
622 | 0, 2, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); | |
623 | if (err < 0) { | |
1da177e4 LT |
624 | BT_ERR("Can't change to running configuration"); |
625 | goto error; | |
626 | } | |
627 | ||
9c724357 | 628 | data->udev->toggle[0] = data->udev->toggle[1] = 0; |
1da177e4 LT |
629 | |
630 | BT_INFO("BlueFRITZ! USB device ready"); | |
631 | ||
632 | kfree(buf); | |
633 | return 0; | |
634 | ||
635 | error: | |
636 | kfree(buf); | |
637 | ||
9c724357 | 638 | pipe = usb_sndctrlpipe(data->udev, 0); |
1da177e4 | 639 | |
9c724357 | 640 | usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION, |
1da177e4 LT |
641 | 0, 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); |
642 | ||
643 | return err; | |
644 | } | |
645 | ||
646 | static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *id) | |
647 | { | |
648 | const struct firmware *firmware; | |
649 | struct usb_device *udev = interface_to_usbdev(intf); | |
650 | struct usb_host_endpoint *bulk_out_ep; | |
651 | struct usb_host_endpoint *bulk_in_ep; | |
652 | struct hci_dev *hdev; | |
9c724357 | 653 | struct bfusb_data *data; |
1da177e4 LT |
654 | |
655 | BT_DBG("intf %p id %p", intf, id); | |
656 | ||
1da177e4 LT |
657 | /* Check number of endpoints */ |
658 | if (intf->cur_altsetting->desc.bNumEndpoints < 2) | |
659 | return -EIO; | |
660 | ||
661 | bulk_out_ep = &intf->cur_altsetting->endpoint[0]; | |
662 | bulk_in_ep = &intf->cur_altsetting->endpoint[1]; | |
663 | ||
664 | if (!bulk_out_ep || !bulk_in_ep) { | |
665 | BT_ERR("Bulk endpoints not found"); | |
666 | goto done; | |
667 | } | |
668 | ||
669 | /* Initialize control structure and load firmware */ | |
9c724357 MH |
670 | data = kzalloc(sizeof(struct bfusb_data), GFP_KERNEL); |
671 | if (!data) { | |
1da177e4 LT |
672 | BT_ERR("Can't allocate memory for control structure"); |
673 | goto done; | |
674 | } | |
675 | ||
9c724357 MH |
676 | data->udev = udev; |
677 | data->bulk_in_ep = bulk_in_ep->desc.bEndpointAddress; | |
678 | data->bulk_out_ep = bulk_out_ep->desc.bEndpointAddress; | |
679 | data->bulk_pkt_size = le16_to_cpu(bulk_out_ep->desc.wMaxPacketSize); | |
1da177e4 | 680 | |
9c724357 | 681 | rwlock_init(&data->lock); |
1da177e4 | 682 | |
9c724357 | 683 | data->reassembly = NULL; |
1da177e4 | 684 | |
9c724357 MH |
685 | skb_queue_head_init(&data->transmit_q); |
686 | skb_queue_head_init(&data->pending_q); | |
687 | skb_queue_head_init(&data->completed_q); | |
1da177e4 LT |
688 | |
689 | if (request_firmware(&firmware, "bfubase.frm", &udev->dev) < 0) { | |
690 | BT_ERR("Firmware request failed"); | |
691 | goto error; | |
692 | } | |
693 | ||
694 | BT_DBG("firmware data %p size %d", firmware->data, firmware->size); | |
695 | ||
9c724357 | 696 | if (bfusb_load_firmware(data, firmware->data, firmware->size) < 0) { |
1da177e4 LT |
697 | BT_ERR("Firmware loading failed"); |
698 | goto release; | |
699 | } | |
700 | ||
701 | release_firmware(firmware); | |
702 | ||
703 | /* Initialize and register HCI device */ | |
704 | hdev = hci_alloc_dev(); | |
705 | if (!hdev) { | |
706 | BT_ERR("Can't allocate HCI device"); | |
707 | goto error; | |
708 | } | |
709 | ||
9c724357 | 710 | data->hdev = hdev; |
1da177e4 LT |
711 | |
712 | hdev->type = HCI_USB; | |
9c724357 | 713 | hdev->driver_data = data; |
1da177e4 LT |
714 | SET_HCIDEV_DEV(hdev, &intf->dev); |
715 | ||
716 | hdev->open = bfusb_open; | |
717 | hdev->close = bfusb_close; | |
718 | hdev->flush = bfusb_flush; | |
719 | hdev->send = bfusb_send_frame; | |
720 | hdev->destruct = bfusb_destruct; | |
721 | hdev->ioctl = bfusb_ioctl; | |
722 | ||
723 | hdev->owner = THIS_MODULE; | |
724 | ||
725 | if (hci_register_dev(hdev) < 0) { | |
726 | BT_ERR("Can't register HCI device"); | |
727 | hci_free_dev(hdev); | |
728 | goto error; | |
729 | } | |
730 | ||
9c724357 | 731 | usb_set_intfdata(intf, data); |
1da177e4 LT |
732 | |
733 | return 0; | |
734 | ||
735 | release: | |
736 | release_firmware(firmware); | |
737 | ||
738 | error: | |
9c724357 | 739 | kfree(data); |
1da177e4 LT |
740 | |
741 | done: | |
742 | return -EIO; | |
743 | } | |
744 | ||
745 | static void bfusb_disconnect(struct usb_interface *intf) | |
746 | { | |
9c724357 MH |
747 | struct bfusb_data *data = usb_get_intfdata(intf); |
748 | struct hci_dev *hdev = data->hdev; | |
1da177e4 LT |
749 | |
750 | BT_DBG("intf %p", intf); | |
751 | ||
752 | if (!hdev) | |
753 | return; | |
754 | ||
755 | usb_set_intfdata(intf, NULL); | |
756 | ||
757 | bfusb_close(hdev); | |
758 | ||
759 | if (hci_unregister_dev(hdev) < 0) | |
760 | BT_ERR("Can't unregister HCI device %s", hdev->name); | |
761 | ||
762 | hci_free_dev(hdev); | |
763 | } | |
764 | ||
765 | static struct usb_driver bfusb_driver = { | |
1da177e4 LT |
766 | .name = "bfusb", |
767 | .probe = bfusb_probe, | |
768 | .disconnect = bfusb_disconnect, | |
769 | .id_table = bfusb_table, | |
770 | }; | |
771 | ||
772 | static int __init bfusb_init(void) | |
773 | { | |
774 | int err; | |
775 | ||
776 | BT_INFO("BlueFRITZ! USB driver ver %s", VERSION); | |
777 | ||
9c724357 MH |
778 | err = usb_register(&bfusb_driver); |
779 | if (err < 0) | |
1da177e4 LT |
780 | BT_ERR("Failed to register BlueFRITZ! USB driver"); |
781 | ||
782 | return err; | |
783 | } | |
784 | ||
785 | static void __exit bfusb_exit(void) | |
786 | { | |
787 | usb_deregister(&bfusb_driver); | |
788 | } | |
789 | ||
790 | module_init(bfusb_init); | |
791 | module_exit(bfusb_exit); | |
792 | ||
1da177e4 LT |
793 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
794 | MODULE_DESCRIPTION("BlueFRITZ! USB driver ver " VERSION); | |
795 | MODULE_VERSION(VERSION); | |
796 | MODULE_LICENSE("GPL"); | |
2312119a | 797 | MODULE_FIRMWARE("bfubase.frm"); |