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 | ||
943d56b0 | 41 | #define VERSION "1.2" |
1da177e4 LT |
42 | |
43 | static struct usb_driver bfusb_driver; | |
44 | ||
45 | static struct usb_device_id bfusb_table[] = { | |
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 LT |
133 | |
134 | if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC))) | |
135 | return -ENOMEM; | |
136 | ||
9c724357 | 137 | pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep); |
1da177e4 | 138 | |
9c724357 | 139 | usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, skb->len, |
1da177e4 LT |
140 | bfusb_tx_complete, skb); |
141 | ||
142 | scb->urb = urb; | |
143 | ||
9c724357 | 144 | skb_queue_tail(&data->pending_q, skb); |
1da177e4 LT |
145 | |
146 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
147 | if (err) { | |
148 | BT_ERR("%s bulk tx submit failed urb %p err %d", | |
9c724357 MH |
149 | data->hdev->name, urb, err); |
150 | skb_unlink(skb, &data->pending_q); | |
1da177e4 LT |
151 | usb_free_urb(urb); |
152 | } else | |
9c724357 | 153 | atomic_inc(&data->pending_tx); |
1da177e4 LT |
154 | |
155 | return err; | |
156 | } | |
157 | ||
9c724357 | 158 | static void bfusb_tx_wakeup(struct bfusb_data *data) |
1da177e4 LT |
159 | { |
160 | struct sk_buff *skb; | |
161 | ||
9c724357 | 162 | BT_DBG("bfusb %p", data); |
1da177e4 | 163 | |
9c724357 MH |
164 | if (test_and_set_bit(BFUSB_TX_PROCESS, &data->state)) { |
165 | set_bit(BFUSB_TX_WAKEUP, &data->state); | |
1da177e4 LT |
166 | return; |
167 | } | |
168 | ||
169 | do { | |
9c724357 | 170 | clear_bit(BFUSB_TX_WAKEUP, &data->state); |
1da177e4 | 171 | |
9c724357 MH |
172 | while ((atomic_read(&data->pending_tx) < BFUSB_MAX_BULK_TX) && |
173 | (skb = skb_dequeue(&data->transmit_q))) { | |
174 | if (bfusb_send_bulk(data, skb) < 0) { | |
175 | skb_queue_head(&data->transmit_q, skb); | |
1da177e4 LT |
176 | break; |
177 | } | |
178 | } | |
179 | ||
9c724357 | 180 | } while (test_bit(BFUSB_TX_WAKEUP, &data->state)); |
1da177e4 | 181 | |
9c724357 | 182 | clear_bit(BFUSB_TX_PROCESS, &data->state); |
1da177e4 LT |
183 | } |
184 | ||
7d12e780 | 185 | static void bfusb_tx_complete(struct urb *urb) |
1da177e4 LT |
186 | { |
187 | struct sk_buff *skb = (struct sk_buff *) urb->context; | |
9c724357 | 188 | struct bfusb_data *data = (struct bfusb_data *) skb->dev; |
1da177e4 | 189 | |
9c724357 | 190 | BT_DBG("bfusb %p urb %p skb %p len %d", data, urb, skb, skb->len); |
1da177e4 | 191 | |
9c724357 | 192 | atomic_dec(&data->pending_tx); |
1da177e4 | 193 | |
9c724357 | 194 | if (!test_bit(HCI_RUNNING, &data->hdev->flags)) |
1da177e4 LT |
195 | return; |
196 | ||
197 | if (!urb->status) | |
9c724357 | 198 | data->hdev->stat.byte_tx += skb->len; |
1da177e4 | 199 | else |
9c724357 | 200 | data->hdev->stat.err_tx++; |
1da177e4 | 201 | |
9c724357 | 202 | read_lock(&data->lock); |
1da177e4 | 203 | |
9c724357 MH |
204 | skb_unlink(skb, &data->pending_q); |
205 | skb_queue_tail(&data->completed_q, skb); | |
1da177e4 | 206 | |
9c724357 | 207 | bfusb_tx_wakeup(data); |
1da177e4 | 208 | |
9c724357 | 209 | read_unlock(&data->lock); |
1da177e4 LT |
210 | } |
211 | ||
212 | ||
9c724357 | 213 | static int bfusb_rx_submit(struct bfusb_data *data, struct urb *urb) |
1da177e4 | 214 | { |
9c724357 | 215 | struct bfusb_data_scb *scb; |
1da177e4 LT |
216 | struct sk_buff *skb; |
217 | int err, pipe, size = HCI_MAX_FRAME_SIZE + 32; | |
218 | ||
a418b893 | 219 | BT_DBG("bfusb %p urb %p", data, urb); |
1da177e4 LT |
220 | |
221 | if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC))) | |
222 | return -ENOMEM; | |
223 | ||
9c724357 MH |
224 | skb = bt_skb_alloc(size, GFP_ATOMIC); |
225 | if (!skb) { | |
1da177e4 LT |
226 | usb_free_urb(urb); |
227 | return -ENOMEM; | |
228 | } | |
229 | ||
9c724357 | 230 | skb->dev = (void *) data; |
1da177e4 | 231 | |
9c724357 | 232 | scb = (struct bfusb_data_scb *) skb->cb; |
1da177e4 LT |
233 | scb->urb = urb; |
234 | ||
9c724357 | 235 | pipe = usb_rcvbulkpipe(data->udev, data->bulk_in_ep); |
1da177e4 | 236 | |
9c724357 | 237 | usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, size, |
1da177e4 LT |
238 | bfusb_rx_complete, skb); |
239 | ||
9c724357 | 240 | skb_queue_tail(&data->pending_q, skb); |
1da177e4 LT |
241 | |
242 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
243 | if (err) { | |
244 | BT_ERR("%s bulk rx submit failed urb %p err %d", | |
9c724357 MH |
245 | data->hdev->name, urb, err); |
246 | skb_unlink(skb, &data->pending_q); | |
1da177e4 LT |
247 | kfree_skb(skb); |
248 | usb_free_urb(urb); | |
249 | } | |
250 | ||
251 | return err; | |
252 | } | |
253 | ||
9c724357 | 254 | static inline int bfusb_recv_block(struct bfusb_data *data, int hdr, unsigned char *buf, int len) |
1da177e4 | 255 | { |
9c724357 | 256 | BT_DBG("bfusb %p hdr 0x%02x data %p len %d", data, hdr, buf, len); |
1da177e4 LT |
257 | |
258 | if (hdr & 0x10) { | |
9c724357 MH |
259 | BT_ERR("%s error in block", data->hdev->name); |
260 | if (data->reassembly) | |
261 | kfree_skb(data->reassembly); | |
262 | data->reassembly = NULL; | |
1da177e4 LT |
263 | return -EIO; |
264 | } | |
265 | ||
266 | if (hdr & 0x04) { | |
267 | struct sk_buff *skb; | |
268 | unsigned char pkt_type; | |
269 | int pkt_len = 0; | |
270 | ||
9c724357 MH |
271 | if (data->reassembly) { |
272 | BT_ERR("%s unexpected start block", data->hdev->name); | |
273 | kfree_skb(data->reassembly); | |
274 | data->reassembly = NULL; | |
1da177e4 LT |
275 | } |
276 | ||
277 | if (len < 1) { | |
9c724357 | 278 | BT_ERR("%s no packet type found", data->hdev->name); |
1da177e4 LT |
279 | return -EPROTO; |
280 | } | |
281 | ||
9c724357 | 282 | pkt_type = *buf++; len--; |
1da177e4 LT |
283 | |
284 | switch (pkt_type) { | |
285 | case HCI_EVENT_PKT: | |
286 | if (len >= HCI_EVENT_HDR_SIZE) { | |
9c724357 | 287 | struct hci_event_hdr *hdr = (struct hci_event_hdr *) buf; |
1da177e4 LT |
288 | pkt_len = HCI_EVENT_HDR_SIZE + hdr->plen; |
289 | } else { | |
9c724357 | 290 | BT_ERR("%s event block is too short", data->hdev->name); |
1da177e4 LT |
291 | return -EILSEQ; |
292 | } | |
293 | break; | |
294 | ||
295 | case HCI_ACLDATA_PKT: | |
296 | if (len >= HCI_ACL_HDR_SIZE) { | |
9c724357 | 297 | struct hci_acl_hdr *hdr = (struct hci_acl_hdr *) buf; |
1da177e4 LT |
298 | pkt_len = HCI_ACL_HDR_SIZE + __le16_to_cpu(hdr->dlen); |
299 | } else { | |
9c724357 | 300 | BT_ERR("%s data block is too short", data->hdev->name); |
1da177e4 LT |
301 | return -EILSEQ; |
302 | } | |
303 | break; | |
304 | ||
305 | case HCI_SCODATA_PKT: | |
306 | if (len >= HCI_SCO_HDR_SIZE) { | |
9c724357 | 307 | struct hci_sco_hdr *hdr = (struct hci_sco_hdr *) buf; |
1da177e4 LT |
308 | pkt_len = HCI_SCO_HDR_SIZE + hdr->dlen; |
309 | } else { | |
9c724357 | 310 | BT_ERR("%s audio block is too short", data->hdev->name); |
1da177e4 LT |
311 | return -EILSEQ; |
312 | } | |
313 | break; | |
314 | } | |
315 | ||
316 | skb = bt_skb_alloc(pkt_len, GFP_ATOMIC); | |
317 | if (!skb) { | |
9c724357 | 318 | BT_ERR("%s no memory for the packet", data->hdev->name); |
1da177e4 LT |
319 | return -ENOMEM; |
320 | } | |
321 | ||
9c724357 | 322 | skb->dev = (void *) data->hdev; |
0d48d939 | 323 | bt_cb(skb)->pkt_type = pkt_type; |
1da177e4 | 324 | |
9c724357 | 325 | data->reassembly = skb; |
1da177e4 | 326 | } else { |
9c724357 MH |
327 | if (!data->reassembly) { |
328 | BT_ERR("%s unexpected continuation block", data->hdev->name); | |
1da177e4 LT |
329 | return -EIO; |
330 | } | |
331 | } | |
332 | ||
333 | if (len > 0) | |
9c724357 | 334 | memcpy(skb_put(data->reassembly, len), buf, len); |
1da177e4 LT |
335 | |
336 | if (hdr & 0x08) { | |
9c724357 MH |
337 | hci_recv_frame(data->reassembly); |
338 | data->reassembly = NULL; | |
1da177e4 LT |
339 | } |
340 | ||
341 | return 0; | |
342 | } | |
343 | ||
7d12e780 | 344 | static void bfusb_rx_complete(struct urb *urb) |
1da177e4 LT |
345 | { |
346 | struct sk_buff *skb = (struct sk_buff *) urb->context; | |
9c724357 | 347 | struct bfusb_data *data = (struct bfusb_data *) skb->dev; |
1da177e4 LT |
348 | unsigned char *buf = urb->transfer_buffer; |
349 | int count = urb->actual_length; | |
350 | int err, hdr, len; | |
351 | ||
a418b893 | 352 | BT_DBG("bfusb %p urb %p skb %p len %d", data, urb, skb, skb->len); |
1da177e4 | 353 | |
9c724357 | 354 | read_lock(&data->lock); |
1da177e4 | 355 | |
9c724357 | 356 | if (!test_bit(HCI_RUNNING, &data->hdev->flags)) |
1da177e4 LT |
357 | goto unlock; |
358 | ||
359 | if (urb->status || !count) | |
360 | goto resubmit; | |
361 | ||
9c724357 | 362 | data->hdev->stat.byte_rx += count; |
1da177e4 LT |
363 | |
364 | skb_put(skb, count); | |
365 | ||
366 | while (count) { | |
367 | hdr = buf[0] | (buf[1] << 8); | |
368 | ||
369 | if (hdr & 0x4000) { | |
370 | len = 0; | |
371 | count -= 2; | |
372 | buf += 2; | |
373 | } else { | |
374 | len = (buf[2] == 0) ? 256 : buf[2]; | |
375 | count -= 3; | |
376 | buf += 3; | |
377 | } | |
378 | ||
379 | if (count < len) { | |
380 | BT_ERR("%s block extends over URB buffer ranges", | |
9c724357 | 381 | data->hdev->name); |
1da177e4 LT |
382 | } |
383 | ||
384 | if ((hdr & 0xe1) == 0xc1) | |
9c724357 | 385 | bfusb_recv_block(data, hdr, buf, len); |
1da177e4 LT |
386 | |
387 | count -= len; | |
388 | buf += len; | |
389 | } | |
390 | ||
9c724357 | 391 | skb_unlink(skb, &data->pending_q); |
1da177e4 LT |
392 | kfree_skb(skb); |
393 | ||
9c724357 | 394 | bfusb_rx_submit(data, urb); |
1da177e4 | 395 | |
9c724357 | 396 | read_unlock(&data->lock); |
1da177e4 LT |
397 | |
398 | return; | |
399 | ||
400 | resubmit: | |
9c724357 | 401 | urb->dev = data->udev; |
1da177e4 LT |
402 | |
403 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
404 | if (err) { | |
405 | BT_ERR("%s bulk resubmit failed urb %p err %d", | |
9c724357 | 406 | data->hdev->name, urb, err); |
1da177e4 LT |
407 | } |
408 | ||
409 | unlock: | |
9c724357 | 410 | read_unlock(&data->lock); |
1da177e4 LT |
411 | } |
412 | ||
1da177e4 LT |
413 | static int bfusb_open(struct hci_dev *hdev) |
414 | { | |
9c724357 | 415 | struct bfusb_data *data = hdev->driver_data; |
1da177e4 LT |
416 | unsigned long flags; |
417 | int i, err; | |
418 | ||
9c724357 | 419 | BT_DBG("hdev %p bfusb %p", hdev, data); |
1da177e4 LT |
420 | |
421 | if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) | |
422 | return 0; | |
423 | ||
9c724357 | 424 | write_lock_irqsave(&data->lock, flags); |
1da177e4 | 425 | |
9c724357 | 426 | err = bfusb_rx_submit(data, NULL); |
1da177e4 LT |
427 | if (!err) { |
428 | for (i = 1; i < BFUSB_MAX_BULK_RX; i++) | |
9c724357 | 429 | bfusb_rx_submit(data, NULL); |
1da177e4 LT |
430 | } else { |
431 | clear_bit(HCI_RUNNING, &hdev->flags); | |
432 | } | |
433 | ||
9c724357 | 434 | write_unlock_irqrestore(&data->lock, flags); |
1da177e4 LT |
435 | |
436 | return err; | |
437 | } | |
438 | ||
439 | static int bfusb_flush(struct hci_dev *hdev) | |
440 | { | |
9c724357 | 441 | struct bfusb_data *data = hdev->driver_data; |
1da177e4 | 442 | |
9c724357 | 443 | BT_DBG("hdev %p bfusb %p", hdev, data); |
1da177e4 | 444 | |
9c724357 | 445 | skb_queue_purge(&data->transmit_q); |
1da177e4 LT |
446 | |
447 | return 0; | |
448 | } | |
449 | ||
450 | static int bfusb_close(struct hci_dev *hdev) | |
451 | { | |
9c724357 | 452 | struct bfusb_data *data = hdev->driver_data; |
1da177e4 LT |
453 | unsigned long flags; |
454 | ||
9c724357 | 455 | BT_DBG("hdev %p bfusb %p", hdev, data); |
1da177e4 LT |
456 | |
457 | if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) | |
458 | return 0; | |
459 | ||
9c724357 MH |
460 | write_lock_irqsave(&data->lock, flags); |
461 | write_unlock_irqrestore(&data->lock, flags); | |
1da177e4 | 462 | |
9c724357 | 463 | bfusb_unlink_urbs(data); |
1da177e4 LT |
464 | bfusb_flush(hdev); |
465 | ||
466 | return 0; | |
467 | } | |
468 | ||
469 | static int bfusb_send_frame(struct sk_buff *skb) | |
470 | { | |
471 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; | |
9c724357 | 472 | struct bfusb_data *data; |
1da177e4 LT |
473 | struct sk_buff *nskb; |
474 | unsigned char buf[3]; | |
475 | int sent = 0, size, count; | |
476 | ||
0d48d939 | 477 | BT_DBG("hdev %p skb %p type %d len %d", hdev, skb, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 LT |
478 | |
479 | if (!hdev) { | |
480 | BT_ERR("Frame for unknown HCI device (hdev=NULL)"); | |
481 | return -ENODEV; | |
482 | } | |
483 | ||
484 | if (!test_bit(HCI_RUNNING, &hdev->flags)) | |
485 | return -EBUSY; | |
486 | ||
9c724357 | 487 | data = hdev->driver_data; |
1da177e4 | 488 | |
0d48d939 | 489 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
490 | case HCI_COMMAND_PKT: |
491 | hdev->stat.cmd_tx++; | |
492 | break; | |
493 | case HCI_ACLDATA_PKT: | |
494 | hdev->stat.acl_tx++; | |
495 | break; | |
496 | case HCI_SCODATA_PKT: | |
497 | hdev->stat.sco_tx++; | |
498 | break; | |
499 | }; | |
500 | ||
501 | /* Prepend skb with frame type */ | |
0d48d939 | 502 | memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1); |
1da177e4 LT |
503 | |
504 | count = skb->len; | |
505 | ||
506 | /* Max HCI frame size seems to be 1511 + 1 */ | |
9c724357 MH |
507 | nskb = bt_skb_alloc(count + 32, GFP_ATOMIC); |
508 | if (!nskb) { | |
1da177e4 LT |
509 | BT_ERR("Can't allocate memory for new packet"); |
510 | return -ENOMEM; | |
511 | } | |
512 | ||
9c724357 | 513 | nskb->dev = (void *) data; |
1da177e4 LT |
514 | |
515 | while (count) { | |
516 | size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE); | |
517 | ||
518 | buf[0] = 0xc1 | ((sent == 0) ? 0x04 : 0) | ((count == size) ? 0x08 : 0); | |
519 | buf[1] = 0x00; | |
520 | buf[2] = (size == BFUSB_MAX_BLOCK_SIZE) ? 0 : size; | |
521 | ||
522 | memcpy(skb_put(nskb, 3), buf, 3); | |
d626f62b | 523 | skb_copy_from_linear_data_offset(skb, sent, skb_put(nskb, size), size); |
1da177e4 LT |
524 | |
525 | sent += size; | |
526 | count -= size; | |
527 | } | |
528 | ||
529 | /* Don't send frame with multiple size of bulk max packet */ | |
9c724357 | 530 | if ((nskb->len % data->bulk_pkt_size) == 0) { |
1da177e4 LT |
531 | buf[0] = 0xdd; |
532 | buf[1] = 0x00; | |
533 | memcpy(skb_put(nskb, 2), buf, 2); | |
534 | } | |
535 | ||
9c724357 | 536 | read_lock(&data->lock); |
1da177e4 | 537 | |
9c724357 MH |
538 | skb_queue_tail(&data->transmit_q, nskb); |
539 | bfusb_tx_wakeup(data); | |
1da177e4 | 540 | |
9c724357 | 541 | read_unlock(&data->lock); |
1da177e4 LT |
542 | |
543 | kfree_skb(skb); | |
544 | ||
545 | return 0; | |
546 | } | |
547 | ||
548 | static void bfusb_destruct(struct hci_dev *hdev) | |
549 | { | |
9c724357 | 550 | struct bfusb_data *data = hdev->driver_data; |
1da177e4 | 551 | |
9c724357 | 552 | BT_DBG("hdev %p bfusb %p", hdev, data); |
1da177e4 | 553 | |
9c724357 | 554 | kfree(data); |
1da177e4 LT |
555 | } |
556 | ||
557 | static int bfusb_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg) | |
558 | { | |
559 | return -ENOIOCTLCMD; | |
560 | } | |
561 | ||
8187b4fb DW |
562 | static int bfusb_load_firmware(struct bfusb_data *data, |
563 | const unsigned char *firmware, int count) | |
1da177e4 LT |
564 | { |
565 | unsigned char *buf; | |
566 | int err, pipe, len, size, sent = 0; | |
567 | ||
9c724357 | 568 | BT_DBG("bfusb %p udev %p", data, data->udev); |
1da177e4 LT |
569 | |
570 | BT_INFO("BlueFRITZ! USB loading firmware"); | |
571 | ||
9c724357 | 572 | pipe = usb_sndctrlpipe(data->udev, 0); |
1da177e4 | 573 | |
9c724357 | 574 | if (usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION, |
1da177e4 LT |
575 | 0, 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT) < 0) { |
576 | BT_ERR("Can't change to loading configuration"); | |
577 | return -EBUSY; | |
578 | } | |
579 | ||
9c724357 | 580 | data->udev->toggle[0] = data->udev->toggle[1] = 0; |
1da177e4 LT |
581 | |
582 | buf = kmalloc(BFUSB_MAX_BLOCK_SIZE + 3, GFP_ATOMIC); | |
583 | if (!buf) { | |
584 | BT_ERR("Can't allocate memory chunk for firmware"); | |
585 | return -ENOMEM; | |
586 | } | |
587 | ||
9c724357 | 588 | pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep); |
1da177e4 LT |
589 | |
590 | while (count) { | |
591 | size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE + 3); | |
592 | ||
593 | memcpy(buf, firmware + sent, size); | |
594 | ||
9c724357 | 595 | err = usb_bulk_msg(data->udev, pipe, buf, size, |
1da177e4 LT |
596 | &len, BFUSB_BLOCK_TIMEOUT); |
597 | ||
598 | if (err || (len != size)) { | |
599 | BT_ERR("Error in firmware loading"); | |
600 | goto error; | |
601 | } | |
602 | ||
603 | sent += size; | |
604 | count -= size; | |
605 | } | |
606 | ||
9c724357 MH |
607 | err = usb_bulk_msg(data->udev, pipe, NULL, 0, |
608 | &len, BFUSB_BLOCK_TIMEOUT); | |
609 | if (err < 0) { | |
1da177e4 LT |
610 | BT_ERR("Error in null packet request"); |
611 | goto error; | |
612 | } | |
613 | ||
9c724357 | 614 | pipe = usb_sndctrlpipe(data->udev, 0); |
1da177e4 | 615 | |
9c724357 MH |
616 | err = usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION, |
617 | 0, 2, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); | |
618 | if (err < 0) { | |
1da177e4 LT |
619 | BT_ERR("Can't change to running configuration"); |
620 | goto error; | |
621 | } | |
622 | ||
9c724357 | 623 | data->udev->toggle[0] = data->udev->toggle[1] = 0; |
1da177e4 LT |
624 | |
625 | BT_INFO("BlueFRITZ! USB device ready"); | |
626 | ||
627 | kfree(buf); | |
628 | return 0; | |
629 | ||
630 | error: | |
631 | kfree(buf); | |
632 | ||
9c724357 | 633 | pipe = usb_sndctrlpipe(data->udev, 0); |
1da177e4 | 634 | |
9c724357 | 635 | usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION, |
1da177e4 LT |
636 | 0, 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); |
637 | ||
638 | return err; | |
639 | } | |
640 | ||
641 | static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *id) | |
642 | { | |
643 | const struct firmware *firmware; | |
644 | struct usb_device *udev = interface_to_usbdev(intf); | |
645 | struct usb_host_endpoint *bulk_out_ep; | |
646 | struct usb_host_endpoint *bulk_in_ep; | |
647 | struct hci_dev *hdev; | |
9c724357 | 648 | struct bfusb_data *data; |
1da177e4 LT |
649 | |
650 | BT_DBG("intf %p id %p", intf, id); | |
651 | ||
1da177e4 LT |
652 | /* Check number of endpoints */ |
653 | if (intf->cur_altsetting->desc.bNumEndpoints < 2) | |
654 | return -EIO; | |
655 | ||
656 | bulk_out_ep = &intf->cur_altsetting->endpoint[0]; | |
657 | bulk_in_ep = &intf->cur_altsetting->endpoint[1]; | |
658 | ||
659 | if (!bulk_out_ep || !bulk_in_ep) { | |
660 | BT_ERR("Bulk endpoints not found"); | |
661 | goto done; | |
662 | } | |
663 | ||
664 | /* Initialize control structure and load firmware */ | |
9c724357 MH |
665 | data = kzalloc(sizeof(struct bfusb_data), GFP_KERNEL); |
666 | if (!data) { | |
1da177e4 LT |
667 | BT_ERR("Can't allocate memory for control structure"); |
668 | goto done; | |
669 | } | |
670 | ||
9c724357 MH |
671 | data->udev = udev; |
672 | data->bulk_in_ep = bulk_in_ep->desc.bEndpointAddress; | |
673 | data->bulk_out_ep = bulk_out_ep->desc.bEndpointAddress; | |
674 | data->bulk_pkt_size = le16_to_cpu(bulk_out_ep->desc.wMaxPacketSize); | |
1da177e4 | 675 | |
9c724357 | 676 | rwlock_init(&data->lock); |
1da177e4 | 677 | |
9c724357 | 678 | data->reassembly = NULL; |
1da177e4 | 679 | |
9c724357 MH |
680 | skb_queue_head_init(&data->transmit_q); |
681 | skb_queue_head_init(&data->pending_q); | |
682 | skb_queue_head_init(&data->completed_q); | |
1da177e4 LT |
683 | |
684 | if (request_firmware(&firmware, "bfubase.frm", &udev->dev) < 0) { | |
685 | BT_ERR("Firmware request failed"); | |
686 | goto error; | |
687 | } | |
688 | ||
a418b893 | 689 | BT_DBG("firmware data %p size %zu", firmware->data, firmware->size); |
1da177e4 | 690 | |
9c724357 | 691 | if (bfusb_load_firmware(data, firmware->data, firmware->size) < 0) { |
1da177e4 LT |
692 | BT_ERR("Firmware loading failed"); |
693 | goto release; | |
694 | } | |
695 | ||
696 | release_firmware(firmware); | |
697 | ||
698 | /* Initialize and register HCI device */ | |
699 | hdev = hci_alloc_dev(); | |
700 | if (!hdev) { | |
701 | BT_ERR("Can't allocate HCI device"); | |
702 | goto error; | |
703 | } | |
704 | ||
9c724357 | 705 | data->hdev = hdev; |
1da177e4 LT |
706 | |
707 | hdev->type = HCI_USB; | |
9c724357 | 708 | hdev->driver_data = data; |
1da177e4 LT |
709 | SET_HCIDEV_DEV(hdev, &intf->dev); |
710 | ||
711 | hdev->open = bfusb_open; | |
712 | hdev->close = bfusb_close; | |
713 | hdev->flush = bfusb_flush; | |
714 | hdev->send = bfusb_send_frame; | |
715 | hdev->destruct = bfusb_destruct; | |
716 | hdev->ioctl = bfusb_ioctl; | |
717 | ||
718 | hdev->owner = THIS_MODULE; | |
719 | ||
720 | if (hci_register_dev(hdev) < 0) { | |
721 | BT_ERR("Can't register HCI device"); | |
722 | hci_free_dev(hdev); | |
723 | goto error; | |
724 | } | |
725 | ||
9c724357 | 726 | usb_set_intfdata(intf, data); |
1da177e4 LT |
727 | |
728 | return 0; | |
729 | ||
730 | release: | |
731 | release_firmware(firmware); | |
732 | ||
733 | error: | |
9c724357 | 734 | kfree(data); |
1da177e4 LT |
735 | |
736 | done: | |
737 | return -EIO; | |
738 | } | |
739 | ||
740 | static void bfusb_disconnect(struct usb_interface *intf) | |
741 | { | |
9c724357 MH |
742 | struct bfusb_data *data = usb_get_intfdata(intf); |
743 | struct hci_dev *hdev = data->hdev; | |
1da177e4 LT |
744 | |
745 | BT_DBG("intf %p", intf); | |
746 | ||
747 | if (!hdev) | |
748 | return; | |
749 | ||
750 | usb_set_intfdata(intf, NULL); | |
751 | ||
752 | bfusb_close(hdev); | |
753 | ||
754 | if (hci_unregister_dev(hdev) < 0) | |
755 | BT_ERR("Can't unregister HCI device %s", hdev->name); | |
756 | ||
757 | hci_free_dev(hdev); | |
758 | } | |
759 | ||
760 | static struct usb_driver bfusb_driver = { | |
1da177e4 LT |
761 | .name = "bfusb", |
762 | .probe = bfusb_probe, | |
763 | .disconnect = bfusb_disconnect, | |
764 | .id_table = bfusb_table, | |
765 | }; | |
766 | ||
767 | static int __init bfusb_init(void) | |
768 | { | |
769 | int err; | |
770 | ||
771 | BT_INFO("BlueFRITZ! USB driver ver %s", VERSION); | |
772 | ||
9c724357 MH |
773 | err = usb_register(&bfusb_driver); |
774 | if (err < 0) | |
1da177e4 LT |
775 | BT_ERR("Failed to register BlueFRITZ! USB driver"); |
776 | ||
777 | return err; | |
778 | } | |
779 | ||
780 | static void __exit bfusb_exit(void) | |
781 | { | |
782 | usb_deregister(&bfusb_driver); | |
783 | } | |
784 | ||
785 | module_init(bfusb_init); | |
786 | module_exit(bfusb_exit); | |
787 | ||
1da177e4 LT |
788 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
789 | MODULE_DESCRIPTION("BlueFRITZ! USB driver ver " VERSION); | |
790 | MODULE_VERSION(VERSION); | |
791 | MODULE_LICENSE("GPL"); | |
2312119a | 792 | MODULE_FIRMWARE("bfubase.frm"); |