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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 | ||
943d56b0 | 41 | #define VERSION "1.2" |
1da177e4 LT |
42 | |
43 | static struct usb_driver bfusb_driver; | |
44 | ||
9712d59a | 45 | static const struct usb_device_id bfusb_table[] = { |
1da177e4 LT |
46 | /* AVM BlueFRITZ! USB */ |
47 | { USB_DEVICE(0x057c, 0x2200) }, | |
48 | ||
49 | { } /* Terminating entry */ | |
50 | }; | |
51 | ||
52 | MODULE_DEVICE_TABLE(usb, bfusb_table); | |
53 | ||
1da177e4 LT |
54 | #define BFUSB_MAX_BLOCK_SIZE 256 |
55 | ||
56 | #define BFUSB_BLOCK_TIMEOUT 3000 | |
57 | ||
58 | #define BFUSB_TX_PROCESS 1 | |
59 | #define BFUSB_TX_WAKEUP 2 | |
60 | ||
61 | #define BFUSB_MAX_BULK_TX 2 | |
62 | #define BFUSB_MAX_BULK_RX 2 | |
63 | ||
9c724357 | 64 | struct bfusb_data { |
1da177e4 LT |
65 | struct hci_dev *hdev; |
66 | ||
67 | unsigned long state; | |
68 | ||
69 | struct usb_device *udev; | |
70 | ||
71 | unsigned int bulk_in_ep; | |
72 | unsigned int bulk_out_ep; | |
73 | unsigned int bulk_pkt_size; | |
74 | ||
75 | rwlock_t lock; | |
76 | ||
77 | struct sk_buff_head transmit_q; | |
78 | ||
79 | struct sk_buff *reassembly; | |
80 | ||
81 | atomic_t pending_tx; | |
82 | struct sk_buff_head pending_q; | |
83 | struct sk_buff_head completed_q; | |
84 | }; | |
85 | ||
9c724357 | 86 | struct bfusb_data_scb { |
1da177e4 LT |
87 | struct urb *urb; |
88 | }; | |
89 | ||
7d12e780 DH |
90 | static void bfusb_tx_complete(struct urb *urb); |
91 | static void bfusb_rx_complete(struct urb *urb); | |
1da177e4 | 92 | |
9c724357 | 93 | static struct urb *bfusb_get_completed(struct bfusb_data *data) |
1da177e4 LT |
94 | { |
95 | struct sk_buff *skb; | |
96 | struct urb *urb = NULL; | |
97 | ||
9c724357 | 98 | BT_DBG("bfusb %p", data); |
1da177e4 | 99 | |
9c724357 | 100 | skb = skb_dequeue(&data->completed_q); |
1da177e4 | 101 | if (skb) { |
9c724357 | 102 | urb = ((struct bfusb_data_scb *) skb->cb)->urb; |
1da177e4 LT |
103 | kfree_skb(skb); |
104 | } | |
105 | ||
106 | return urb; | |
107 | } | |
108 | ||
9c724357 | 109 | static void bfusb_unlink_urbs(struct bfusb_data *data) |
1da177e4 LT |
110 | { |
111 | struct sk_buff *skb; | |
112 | struct urb *urb; | |
113 | ||
9c724357 | 114 | BT_DBG("bfusb %p", data); |
1da177e4 | 115 | |
9c724357 MH |
116 | while ((skb = skb_dequeue(&data->pending_q))) { |
117 | urb = ((struct bfusb_data_scb *) skb->cb)->urb; | |
1da177e4 | 118 | usb_kill_urb(urb); |
9c724357 | 119 | skb_queue_tail(&data->completed_q, skb); |
1da177e4 LT |
120 | } |
121 | ||
9c724357 | 122 | while ((urb = bfusb_get_completed(data))) |
1da177e4 LT |
123 | usb_free_urb(urb); |
124 | } | |
125 | ||
9c724357 | 126 | static int bfusb_send_bulk(struct bfusb_data *data, struct sk_buff *skb) |
1da177e4 | 127 | { |
9c724357 MH |
128 | struct bfusb_data_scb *scb = (void *) skb->cb; |
129 | struct urb *urb = bfusb_get_completed(data); | |
1da177e4 LT |
130 | int err, pipe; |
131 | ||
9c724357 | 132 | BT_DBG("bfusb %p skb %p len %d", data, skb, skb->len); |
1da177e4 | 133 | |
a08b15e6 VI |
134 | if (!urb) { |
135 | urb = usb_alloc_urb(0, GFP_ATOMIC); | |
136 | if (!urb) | |
137 | return -ENOMEM; | |
138 | } | |
1da177e4 | 139 | |
9c724357 | 140 | pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep); |
1da177e4 | 141 | |
9c724357 | 142 | usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, skb->len, |
1da177e4 LT |
143 | bfusb_tx_complete, skb); |
144 | ||
145 | scb->urb = urb; | |
146 | ||
9c724357 | 147 | skb_queue_tail(&data->pending_q, skb); |
1da177e4 LT |
148 | |
149 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
150 | if (err) { | |
151 | BT_ERR("%s bulk tx submit failed urb %p err %d", | |
9c724357 MH |
152 | data->hdev->name, urb, err); |
153 | skb_unlink(skb, &data->pending_q); | |
1da177e4 LT |
154 | usb_free_urb(urb); |
155 | } else | |
9c724357 | 156 | atomic_inc(&data->pending_tx); |
1da177e4 LT |
157 | |
158 | return err; | |
159 | } | |
160 | ||
9c724357 | 161 | static void bfusb_tx_wakeup(struct bfusb_data *data) |
1da177e4 LT |
162 | { |
163 | struct sk_buff *skb; | |
164 | ||
9c724357 | 165 | BT_DBG("bfusb %p", data); |
1da177e4 | 166 | |
9c724357 MH |
167 | if (test_and_set_bit(BFUSB_TX_PROCESS, &data->state)) { |
168 | set_bit(BFUSB_TX_WAKEUP, &data->state); | |
1da177e4 LT |
169 | return; |
170 | } | |
171 | ||
172 | do { | |
9c724357 | 173 | clear_bit(BFUSB_TX_WAKEUP, &data->state); |
1da177e4 | 174 | |
9c724357 MH |
175 | while ((atomic_read(&data->pending_tx) < BFUSB_MAX_BULK_TX) && |
176 | (skb = skb_dequeue(&data->transmit_q))) { | |
177 | if (bfusb_send_bulk(data, skb) < 0) { | |
178 | skb_queue_head(&data->transmit_q, skb); | |
1da177e4 LT |
179 | break; |
180 | } | |
181 | } | |
182 | ||
9c724357 | 183 | } while (test_bit(BFUSB_TX_WAKEUP, &data->state)); |
1da177e4 | 184 | |
9c724357 | 185 | clear_bit(BFUSB_TX_PROCESS, &data->state); |
1da177e4 LT |
186 | } |
187 | ||
7d12e780 | 188 | static void bfusb_tx_complete(struct urb *urb) |
1da177e4 LT |
189 | { |
190 | struct sk_buff *skb = (struct sk_buff *) urb->context; | |
9c724357 | 191 | struct bfusb_data *data = (struct bfusb_data *) skb->dev; |
1da177e4 | 192 | |
9c724357 | 193 | BT_DBG("bfusb %p urb %p skb %p len %d", data, urb, skb, skb->len); |
1da177e4 | 194 | |
9c724357 | 195 | atomic_dec(&data->pending_tx); |
1da177e4 | 196 | |
9c724357 | 197 | if (!test_bit(HCI_RUNNING, &data->hdev->flags)) |
1da177e4 LT |
198 | return; |
199 | ||
200 | if (!urb->status) | |
9c724357 | 201 | data->hdev->stat.byte_tx += skb->len; |
1da177e4 | 202 | else |
9c724357 | 203 | data->hdev->stat.err_tx++; |
1da177e4 | 204 | |
9c724357 | 205 | read_lock(&data->lock); |
1da177e4 | 206 | |
9c724357 MH |
207 | skb_unlink(skb, &data->pending_q); |
208 | skb_queue_tail(&data->completed_q, skb); | |
1da177e4 | 209 | |
9c724357 | 210 | bfusb_tx_wakeup(data); |
1da177e4 | 211 | |
9c724357 | 212 | read_unlock(&data->lock); |
1da177e4 LT |
213 | } |
214 | ||
215 | ||
9c724357 | 216 | static int bfusb_rx_submit(struct bfusb_data *data, struct urb *urb) |
1da177e4 | 217 | { |
9c724357 | 218 | struct bfusb_data_scb *scb; |
1da177e4 LT |
219 | struct sk_buff *skb; |
220 | int err, pipe, size = HCI_MAX_FRAME_SIZE + 32; | |
221 | ||
a418b893 | 222 | BT_DBG("bfusb %p urb %p", data, urb); |
1da177e4 | 223 | |
a08b15e6 VI |
224 | if (!urb) { |
225 | urb = usb_alloc_urb(0, GFP_ATOMIC); | |
226 | if (!urb) | |
227 | return -ENOMEM; | |
228 | } | |
1da177e4 | 229 | |
9c724357 MH |
230 | skb = bt_skb_alloc(size, GFP_ATOMIC); |
231 | if (!skb) { | |
1da177e4 LT |
232 | usb_free_urb(urb); |
233 | return -ENOMEM; | |
234 | } | |
235 | ||
9c724357 | 236 | skb->dev = (void *) data; |
1da177e4 | 237 | |
9c724357 | 238 | scb = (struct bfusb_data_scb *) skb->cb; |
1da177e4 LT |
239 | scb->urb = urb; |
240 | ||
9c724357 | 241 | pipe = usb_rcvbulkpipe(data->udev, data->bulk_in_ep); |
1da177e4 | 242 | |
9c724357 | 243 | usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, size, |
1da177e4 LT |
244 | bfusb_rx_complete, skb); |
245 | ||
9c724357 | 246 | skb_queue_tail(&data->pending_q, skb); |
1da177e4 LT |
247 | |
248 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
249 | if (err) { | |
250 | BT_ERR("%s bulk rx submit failed urb %p err %d", | |
9c724357 MH |
251 | data->hdev->name, urb, err); |
252 | skb_unlink(skb, &data->pending_q); | |
1da177e4 LT |
253 | kfree_skb(skb); |
254 | usb_free_urb(urb); | |
255 | } | |
256 | ||
257 | return err; | |
258 | } | |
259 | ||
9c724357 | 260 | static inline int bfusb_recv_block(struct bfusb_data *data, int hdr, unsigned char *buf, int len) |
1da177e4 | 261 | { |
9c724357 | 262 | BT_DBG("bfusb %p hdr 0x%02x data %p len %d", data, hdr, buf, len); |
1da177e4 LT |
263 | |
264 | if (hdr & 0x10) { | |
9c724357 | 265 | BT_ERR("%s error in block", data->hdev->name); |
b1fb0683 | 266 | kfree_skb(data->reassembly); |
9c724357 | 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 | ||
618e8bc2 | 327 | hci_skb_pkt_type(skb) = pkt_type; |
1da177e4 | 328 | |
9c724357 | 329 | data->reassembly = skb; |
1da177e4 | 330 | } else { |
9c724357 MH |
331 | if (!data->reassembly) { |
332 | BT_ERR("%s unexpected continuation block", data->hdev->name); | |
1da177e4 LT |
333 | return -EIO; |
334 | } | |
335 | } | |
336 | ||
337 | if (len > 0) | |
59ae1d12 | 338 | skb_put_data(data->reassembly, buf, len); |
1da177e4 LT |
339 | |
340 | if (hdr & 0x08) { | |
e1a26170 | 341 | hci_recv_frame(data->hdev, data->reassembly); |
9c724357 | 342 | data->reassembly = NULL; |
1da177e4 LT |
343 | } |
344 | ||
345 | return 0; | |
346 | } | |
347 | ||
7d12e780 | 348 | static void bfusb_rx_complete(struct urb *urb) |
1da177e4 LT |
349 | { |
350 | struct sk_buff *skb = (struct sk_buff *) urb->context; | |
9c724357 | 351 | struct bfusb_data *data = (struct bfusb_data *) skb->dev; |
1da177e4 LT |
352 | unsigned char *buf = urb->transfer_buffer; |
353 | int count = urb->actual_length; | |
354 | int err, hdr, len; | |
355 | ||
a418b893 | 356 | BT_DBG("bfusb %p urb %p skb %p len %d", data, urb, skb, skb->len); |
1da177e4 | 357 | |
9c724357 | 358 | read_lock(&data->lock); |
1da177e4 | 359 | |
9c724357 | 360 | if (!test_bit(HCI_RUNNING, &data->hdev->flags)) |
1da177e4 LT |
361 | goto unlock; |
362 | ||
363 | if (urb->status || !count) | |
364 | goto resubmit; | |
365 | ||
9c724357 | 366 | data->hdev->stat.byte_rx += count; |
1da177e4 LT |
367 | |
368 | skb_put(skb, count); | |
369 | ||
370 | while (count) { | |
371 | hdr = buf[0] | (buf[1] << 8); | |
372 | ||
373 | if (hdr & 0x4000) { | |
374 | len = 0; | |
375 | count -= 2; | |
376 | buf += 2; | |
377 | } else { | |
378 | len = (buf[2] == 0) ? 256 : buf[2]; | |
379 | count -= 3; | |
380 | buf += 3; | |
381 | } | |
382 | ||
383 | if (count < len) { | |
384 | BT_ERR("%s block extends over URB buffer ranges", | |
9c724357 | 385 | data->hdev->name); |
1da177e4 LT |
386 | } |
387 | ||
388 | if ((hdr & 0xe1) == 0xc1) | |
9c724357 | 389 | bfusb_recv_block(data, hdr, buf, len); |
1da177e4 LT |
390 | |
391 | count -= len; | |
392 | buf += len; | |
393 | } | |
394 | ||
9c724357 | 395 | skb_unlink(skb, &data->pending_q); |
1da177e4 LT |
396 | kfree_skb(skb); |
397 | ||
9c724357 | 398 | bfusb_rx_submit(data, urb); |
1da177e4 | 399 | |
9c724357 | 400 | read_unlock(&data->lock); |
1da177e4 LT |
401 | |
402 | return; | |
403 | ||
404 | resubmit: | |
9c724357 | 405 | urb->dev = data->udev; |
1da177e4 LT |
406 | |
407 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
408 | if (err) { | |
409 | BT_ERR("%s bulk resubmit failed urb %p err %d", | |
9c724357 | 410 | data->hdev->name, urb, err); |
1da177e4 LT |
411 | } |
412 | ||
413 | unlock: | |
9c724357 | 414 | read_unlock(&data->lock); |
1da177e4 LT |
415 | } |
416 | ||
1da177e4 LT |
417 | static int bfusb_open(struct hci_dev *hdev) |
418 | { | |
155961e8 | 419 | struct bfusb_data *data = hci_get_drvdata(hdev); |
1da177e4 LT |
420 | unsigned long flags; |
421 | int i, err; | |
422 | ||
9c724357 | 423 | BT_DBG("hdev %p bfusb %p", hdev, data); |
1da177e4 | 424 | |
9c724357 | 425 | write_lock_irqsave(&data->lock, flags); |
1da177e4 | 426 | |
9c724357 | 427 | err = bfusb_rx_submit(data, NULL); |
1da177e4 LT |
428 | if (!err) { |
429 | for (i = 1; i < BFUSB_MAX_BULK_RX; i++) | |
9c724357 | 430 | bfusb_rx_submit(data, NULL); |
1da177e4 LT |
431 | } |
432 | ||
9c724357 | 433 | write_unlock_irqrestore(&data->lock, flags); |
1da177e4 LT |
434 | |
435 | return err; | |
436 | } | |
437 | ||
438 | static int bfusb_flush(struct hci_dev *hdev) | |
439 | { | |
155961e8 | 440 | struct bfusb_data *data = hci_get_drvdata(hdev); |
1da177e4 | 441 | |
9c724357 | 442 | BT_DBG("hdev %p bfusb %p", hdev, data); |
1da177e4 | 443 | |
9c724357 | 444 | skb_queue_purge(&data->transmit_q); |
1da177e4 LT |
445 | |
446 | return 0; | |
447 | } | |
448 | ||
449 | static int bfusb_close(struct hci_dev *hdev) | |
450 | { | |
155961e8 | 451 | struct bfusb_data *data = hci_get_drvdata(hdev); |
1da177e4 LT |
452 | unsigned long flags; |
453 | ||
9c724357 | 454 | BT_DBG("hdev %p bfusb %p", hdev, data); |
1da177e4 | 455 | |
9c724357 MH |
456 | write_lock_irqsave(&data->lock, flags); |
457 | write_unlock_irqrestore(&data->lock, flags); | |
1da177e4 | 458 | |
9c724357 | 459 | bfusb_unlink_urbs(data); |
1da177e4 LT |
460 | bfusb_flush(hdev); |
461 | ||
462 | return 0; | |
463 | } | |
464 | ||
7bd8f09f | 465 | static int bfusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 | 466 | { |
aae26277 | 467 | struct bfusb_data *data = hci_get_drvdata(hdev); |
1da177e4 LT |
468 | struct sk_buff *nskb; |
469 | unsigned char buf[3]; | |
470 | int sent = 0, size, count; | |
471 | ||
618e8bc2 MH |
472 | BT_DBG("hdev %p skb %p type %d len %d", hdev, skb, |
473 | hci_skb_pkt_type(skb), skb->len); | |
1da177e4 | 474 | |
618e8bc2 | 475 | switch (hci_skb_pkt_type(skb)) { |
1da177e4 LT |
476 | case HCI_COMMAND_PKT: |
477 | hdev->stat.cmd_tx++; | |
478 | break; | |
479 | case HCI_ACLDATA_PKT: | |
480 | hdev->stat.acl_tx++; | |
481 | break; | |
482 | case HCI_SCODATA_PKT: | |
483 | hdev->stat.sco_tx++; | |
484 | break; | |
a03e33da | 485 | } |
1da177e4 LT |
486 | |
487 | /* Prepend skb with frame type */ | |
618e8bc2 | 488 | memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1); |
1da177e4 LT |
489 | |
490 | count = skb->len; | |
491 | ||
492 | /* Max HCI frame size seems to be 1511 + 1 */ | |
9c724357 MH |
493 | nskb = bt_skb_alloc(count + 32, GFP_ATOMIC); |
494 | if (!nskb) { | |
1da177e4 LT |
495 | BT_ERR("Can't allocate memory for new packet"); |
496 | return -ENOMEM; | |
497 | } | |
498 | ||
9c724357 | 499 | nskb->dev = (void *) data; |
1da177e4 LT |
500 | |
501 | while (count) { | |
502 | size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE); | |
503 | ||
504 | buf[0] = 0xc1 | ((sent == 0) ? 0x04 : 0) | ((count == size) ? 0x08 : 0); | |
505 | buf[1] = 0x00; | |
506 | buf[2] = (size == BFUSB_MAX_BLOCK_SIZE) ? 0 : size; | |
507 | ||
59ae1d12 | 508 | skb_put_data(nskb, buf, 3); |
d626f62b | 509 | skb_copy_from_linear_data_offset(skb, sent, skb_put(nskb, size), size); |
1da177e4 LT |
510 | |
511 | sent += size; | |
512 | count -= size; | |
513 | } | |
514 | ||
515 | /* Don't send frame with multiple size of bulk max packet */ | |
9c724357 | 516 | if ((nskb->len % data->bulk_pkt_size) == 0) { |
1da177e4 LT |
517 | buf[0] = 0xdd; |
518 | buf[1] = 0x00; | |
59ae1d12 | 519 | skb_put_data(nskb, buf, 2); |
1da177e4 LT |
520 | } |
521 | ||
9c724357 | 522 | read_lock(&data->lock); |
1da177e4 | 523 | |
9c724357 MH |
524 | skb_queue_tail(&data->transmit_q, nskb); |
525 | bfusb_tx_wakeup(data); | |
1da177e4 | 526 | |
9c724357 | 527 | read_unlock(&data->lock); |
1da177e4 LT |
528 | |
529 | kfree_skb(skb); | |
530 | ||
531 | return 0; | |
532 | } | |
533 | ||
8187b4fb DW |
534 | static int bfusb_load_firmware(struct bfusb_data *data, |
535 | const unsigned char *firmware, int count) | |
1da177e4 LT |
536 | { |
537 | unsigned char *buf; | |
538 | int err, pipe, len, size, sent = 0; | |
539 | ||
9c724357 | 540 | BT_DBG("bfusb %p udev %p", data, data->udev); |
1da177e4 LT |
541 | |
542 | BT_INFO("BlueFRITZ! USB loading firmware"); | |
543 | ||
7f103a0d DH |
544 | buf = kmalloc(BFUSB_MAX_BLOCK_SIZE + 3, GFP_KERNEL); |
545 | if (!buf) { | |
546 | BT_ERR("Can't allocate memory chunk for firmware"); | |
547 | return -ENOMEM; | |
548 | } | |
549 | ||
9c724357 | 550 | pipe = usb_sndctrlpipe(data->udev, 0); |
1da177e4 | 551 | |
9c724357 | 552 | if (usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION, |
1da177e4 LT |
553 | 0, 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT) < 0) { |
554 | BT_ERR("Can't change to loading configuration"); | |
7f103a0d | 555 | kfree(buf); |
1da177e4 LT |
556 | return -EBUSY; |
557 | } | |
558 | ||
9c724357 | 559 | data->udev->toggle[0] = data->udev->toggle[1] = 0; |
1da177e4 | 560 | |
9c724357 | 561 | pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep); |
1da177e4 LT |
562 | |
563 | while (count) { | |
564 | size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE + 3); | |
565 | ||
566 | memcpy(buf, firmware + sent, size); | |
567 | ||
9c724357 | 568 | err = usb_bulk_msg(data->udev, pipe, buf, size, |
1da177e4 LT |
569 | &len, BFUSB_BLOCK_TIMEOUT); |
570 | ||
571 | if (err || (len != size)) { | |
572 | BT_ERR("Error in firmware loading"); | |
573 | goto error; | |
574 | } | |
575 | ||
576 | sent += size; | |
577 | count -= size; | |
578 | } | |
579 | ||
9c724357 MH |
580 | err = usb_bulk_msg(data->udev, pipe, NULL, 0, |
581 | &len, BFUSB_BLOCK_TIMEOUT); | |
582 | if (err < 0) { | |
1da177e4 LT |
583 | BT_ERR("Error in null packet request"); |
584 | goto error; | |
585 | } | |
586 | ||
9c724357 | 587 | pipe = usb_sndctrlpipe(data->udev, 0); |
1da177e4 | 588 | |
9c724357 MH |
589 | err = usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION, |
590 | 0, 2, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); | |
591 | if (err < 0) { | |
1da177e4 LT |
592 | BT_ERR("Can't change to running configuration"); |
593 | goto error; | |
594 | } | |
595 | ||
9c724357 | 596 | data->udev->toggle[0] = data->udev->toggle[1] = 0; |
1da177e4 LT |
597 | |
598 | BT_INFO("BlueFRITZ! USB device ready"); | |
599 | ||
600 | kfree(buf); | |
601 | return 0; | |
602 | ||
603 | error: | |
604 | kfree(buf); | |
605 | ||
9c724357 | 606 | pipe = usb_sndctrlpipe(data->udev, 0); |
1da177e4 | 607 | |
9c724357 | 608 | usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION, |
1da177e4 LT |
609 | 0, 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); |
610 | ||
611 | return err; | |
612 | } | |
613 | ||
614 | static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *id) | |
615 | { | |
616 | const struct firmware *firmware; | |
617 | struct usb_device *udev = interface_to_usbdev(intf); | |
618 | struct usb_host_endpoint *bulk_out_ep; | |
619 | struct usb_host_endpoint *bulk_in_ep; | |
620 | struct hci_dev *hdev; | |
9c724357 | 621 | struct bfusb_data *data; |
1da177e4 LT |
622 | |
623 | BT_DBG("intf %p id %p", intf, id); | |
624 | ||
1da177e4 LT |
625 | /* Check number of endpoints */ |
626 | if (intf->cur_altsetting->desc.bNumEndpoints < 2) | |
627 | return -EIO; | |
628 | ||
629 | bulk_out_ep = &intf->cur_altsetting->endpoint[0]; | |
630 | bulk_in_ep = &intf->cur_altsetting->endpoint[1]; | |
631 | ||
632 | if (!bulk_out_ep || !bulk_in_ep) { | |
633 | BT_ERR("Bulk endpoints not found"); | |
634 | goto done; | |
635 | } | |
636 | ||
637 | /* Initialize control structure and load firmware */ | |
0213cd8d | 638 | data = devm_kzalloc(&intf->dev, sizeof(struct bfusb_data), GFP_KERNEL); |
f71e823b | 639 | if (!data) |
7ddb6922 | 640 | return -ENOMEM; |
1da177e4 | 641 | |
9c724357 MH |
642 | data->udev = udev; |
643 | data->bulk_in_ep = bulk_in_ep->desc.bEndpointAddress; | |
644 | data->bulk_out_ep = bulk_out_ep->desc.bEndpointAddress; | |
645 | data->bulk_pkt_size = le16_to_cpu(bulk_out_ep->desc.wMaxPacketSize); | |
1da177e4 | 646 | |
9c724357 | 647 | rwlock_init(&data->lock); |
1da177e4 | 648 | |
9c724357 | 649 | data->reassembly = NULL; |
1da177e4 | 650 | |
9c724357 MH |
651 | skb_queue_head_init(&data->transmit_q); |
652 | skb_queue_head_init(&data->pending_q); | |
653 | skb_queue_head_init(&data->completed_q); | |
1da177e4 LT |
654 | |
655 | if (request_firmware(&firmware, "bfubase.frm", &udev->dev) < 0) { | |
656 | BT_ERR("Firmware request failed"); | |
0213cd8d | 657 | goto done; |
1da177e4 LT |
658 | } |
659 | ||
a418b893 | 660 | BT_DBG("firmware data %p size %zu", firmware->data, firmware->size); |
1da177e4 | 661 | |
9c724357 | 662 | if (bfusb_load_firmware(data, firmware->data, firmware->size) < 0) { |
1da177e4 LT |
663 | BT_ERR("Firmware loading failed"); |
664 | goto release; | |
665 | } | |
666 | ||
667 | release_firmware(firmware); | |
668 | ||
669 | /* Initialize and register HCI device */ | |
670 | hdev = hci_alloc_dev(); | |
671 | if (!hdev) { | |
672 | BT_ERR("Can't allocate HCI device"); | |
0213cd8d | 673 | goto done; |
1da177e4 LT |
674 | } |
675 | ||
9c724357 | 676 | data->hdev = hdev; |
1da177e4 | 677 | |
c13854ce | 678 | hdev->bus = HCI_USB; |
155961e8 | 679 | hci_set_drvdata(hdev, data); |
1da177e4 LT |
680 | SET_HCIDEV_DEV(hdev, &intf->dev); |
681 | ||
19cf55a2 MH |
682 | hdev->open = bfusb_open; |
683 | hdev->close = bfusb_close; | |
684 | hdev->flush = bfusb_flush; | |
685 | hdev->send = bfusb_send_frame; | |
1da177e4 | 686 | |
9ef80d40 MH |
687 | set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks); |
688 | ||
1da177e4 LT |
689 | if (hci_register_dev(hdev) < 0) { |
690 | BT_ERR("Can't register HCI device"); | |
691 | hci_free_dev(hdev); | |
0213cd8d | 692 | goto done; |
1da177e4 LT |
693 | } |
694 | ||
9c724357 | 695 | usb_set_intfdata(intf, data); |
1da177e4 LT |
696 | |
697 | return 0; | |
698 | ||
699 | release: | |
700 | release_firmware(firmware); | |
701 | ||
1da177e4 LT |
702 | done: |
703 | return -EIO; | |
704 | } | |
705 | ||
706 | static void bfusb_disconnect(struct usb_interface *intf) | |
707 | { | |
9c724357 MH |
708 | struct bfusb_data *data = usb_get_intfdata(intf); |
709 | struct hci_dev *hdev = data->hdev; | |
1da177e4 LT |
710 | |
711 | BT_DBG("intf %p", intf); | |
712 | ||
713 | if (!hdev) | |
714 | return; | |
715 | ||
716 | usb_set_intfdata(intf, NULL); | |
717 | ||
718 | bfusb_close(hdev); | |
719 | ||
13ea4015 | 720 | hci_unregister_dev(hdev); |
1da177e4 LT |
721 | hci_free_dev(hdev); |
722 | } | |
723 | ||
724 | static struct usb_driver bfusb_driver = { | |
1da177e4 LT |
725 | .name = "bfusb", |
726 | .probe = bfusb_probe, | |
727 | .disconnect = bfusb_disconnect, | |
728 | .id_table = bfusb_table, | |
e1f12eb6 | 729 | .disable_hub_initiated_lpm = 1, |
1da177e4 LT |
730 | }; |
731 | ||
93f1508c | 732 | module_usb_driver(bfusb_driver); |
1da177e4 | 733 | |
1da177e4 LT |
734 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
735 | MODULE_DESCRIPTION("BlueFRITZ! USB driver ver " VERSION); | |
736 | MODULE_VERSION(VERSION); | |
737 | MODULE_LICENSE("GPL"); | |
2312119a | 738 | MODULE_FIRMWARE("bfubase.frm"); |