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> | |
30 | #include <linux/sched.h> | |
31 | #include <linux/errno.h> | |
32 | #include <linux/skbuff.h> | |
33 | ||
34 | #include <linux/device.h> | |
35 | #include <linux/firmware.h> | |
36 | ||
37 | #include <linux/usb.h> | |
38 | ||
39 | #include <net/bluetooth/bluetooth.h> | |
40 | #include <net/bluetooth/hci_core.h> | |
41 | ||
42 | #ifndef CONFIG_BT_HCIBFUSB_DEBUG | |
43 | #undef BT_DBG | |
44 | #define BT_DBG(D...) | |
45 | #endif | |
46 | ||
47 | #define VERSION "1.1" | |
48 | ||
49 | static int ignore = 0; | |
50 | ||
51 | static struct usb_driver bfusb_driver; | |
52 | ||
53 | static struct usb_device_id bfusb_table[] = { | |
54 | /* AVM BlueFRITZ! USB */ | |
55 | { USB_DEVICE(0x057c, 0x2200) }, | |
56 | ||
57 | { } /* Terminating entry */ | |
58 | }; | |
59 | ||
60 | MODULE_DEVICE_TABLE(usb, bfusb_table); | |
61 | ||
1da177e4 LT |
62 | #define BFUSB_MAX_BLOCK_SIZE 256 |
63 | ||
64 | #define BFUSB_BLOCK_TIMEOUT 3000 | |
65 | ||
66 | #define BFUSB_TX_PROCESS 1 | |
67 | #define BFUSB_TX_WAKEUP 2 | |
68 | ||
69 | #define BFUSB_MAX_BULK_TX 2 | |
70 | #define BFUSB_MAX_BULK_RX 2 | |
71 | ||
9c724357 | 72 | struct bfusb_data { |
1da177e4 LT |
73 | struct hci_dev *hdev; |
74 | ||
75 | unsigned long state; | |
76 | ||
77 | struct usb_device *udev; | |
78 | ||
79 | unsigned int bulk_in_ep; | |
80 | unsigned int bulk_out_ep; | |
81 | unsigned int bulk_pkt_size; | |
82 | ||
83 | rwlock_t lock; | |
84 | ||
85 | struct sk_buff_head transmit_q; | |
86 | ||
87 | struct sk_buff *reassembly; | |
88 | ||
89 | atomic_t pending_tx; | |
90 | struct sk_buff_head pending_q; | |
91 | struct sk_buff_head completed_q; | |
92 | }; | |
93 | ||
9c724357 | 94 | struct bfusb_data_scb { |
1da177e4 LT |
95 | struct urb *urb; |
96 | }; | |
97 | ||
7d12e780 DH |
98 | static void bfusb_tx_complete(struct urb *urb); |
99 | static void bfusb_rx_complete(struct urb *urb); | |
1da177e4 | 100 | |
9c724357 | 101 | static struct urb *bfusb_get_completed(struct bfusb_data *data) |
1da177e4 LT |
102 | { |
103 | struct sk_buff *skb; | |
104 | struct urb *urb = NULL; | |
105 | ||
9c724357 | 106 | BT_DBG("bfusb %p", data); |
1da177e4 | 107 | |
9c724357 | 108 | skb = skb_dequeue(&data->completed_q); |
1da177e4 | 109 | if (skb) { |
9c724357 | 110 | urb = ((struct bfusb_data_scb *) skb->cb)->urb; |
1da177e4 LT |
111 | kfree_skb(skb); |
112 | } | |
113 | ||
114 | return urb; | |
115 | } | |
116 | ||
9c724357 | 117 | static void bfusb_unlink_urbs(struct bfusb_data *data) |
1da177e4 LT |
118 | { |
119 | struct sk_buff *skb; | |
120 | struct urb *urb; | |
121 | ||
9c724357 | 122 | BT_DBG("bfusb %p", data); |
1da177e4 | 123 | |
9c724357 MH |
124 | while ((skb = skb_dequeue(&data->pending_q))) { |
125 | urb = ((struct bfusb_data_scb *) skb->cb)->urb; | |
1da177e4 | 126 | usb_kill_urb(urb); |
9c724357 | 127 | skb_queue_tail(&data->completed_q, skb); |
1da177e4 LT |
128 | } |
129 | ||
9c724357 | 130 | while ((urb = bfusb_get_completed(data))) |
1da177e4 LT |
131 | usb_free_urb(urb); |
132 | } | |
133 | ||
9c724357 | 134 | static int bfusb_send_bulk(struct bfusb_data *data, struct sk_buff *skb) |
1da177e4 | 135 | { |
9c724357 MH |
136 | struct bfusb_data_scb *scb = (void *) skb->cb; |
137 | struct urb *urb = bfusb_get_completed(data); | |
1da177e4 LT |
138 | int err, pipe; |
139 | ||
9c724357 | 140 | BT_DBG("bfusb %p skb %p len %d", data, skb, skb->len); |
1da177e4 LT |
141 | |
142 | if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC))) | |
143 | return -ENOMEM; | |
144 | ||
9c724357 | 145 | pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep); |
1da177e4 | 146 | |
9c724357 | 147 | usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, skb->len, |
1da177e4 LT |
148 | bfusb_tx_complete, skb); |
149 | ||
150 | scb->urb = urb; | |
151 | ||
9c724357 | 152 | skb_queue_tail(&data->pending_q, skb); |
1da177e4 LT |
153 | |
154 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
155 | if (err) { | |
156 | BT_ERR("%s bulk tx submit failed urb %p err %d", | |
9c724357 MH |
157 | data->hdev->name, urb, err); |
158 | skb_unlink(skb, &data->pending_q); | |
1da177e4 LT |
159 | usb_free_urb(urb); |
160 | } else | |
9c724357 | 161 | atomic_inc(&data->pending_tx); |
1da177e4 LT |
162 | |
163 | return err; | |
164 | } | |
165 | ||
9c724357 | 166 | static void bfusb_tx_wakeup(struct bfusb_data *data) |
1da177e4 LT |
167 | { |
168 | struct sk_buff *skb; | |
169 | ||
9c724357 | 170 | BT_DBG("bfusb %p", data); |
1da177e4 | 171 | |
9c724357 MH |
172 | if (test_and_set_bit(BFUSB_TX_PROCESS, &data->state)) { |
173 | set_bit(BFUSB_TX_WAKEUP, &data->state); | |
1da177e4 LT |
174 | return; |
175 | } | |
176 | ||
177 | do { | |
9c724357 | 178 | clear_bit(BFUSB_TX_WAKEUP, &data->state); |
1da177e4 | 179 | |
9c724357 MH |
180 | while ((atomic_read(&data->pending_tx) < BFUSB_MAX_BULK_TX) && |
181 | (skb = skb_dequeue(&data->transmit_q))) { | |
182 | if (bfusb_send_bulk(data, skb) < 0) { | |
183 | skb_queue_head(&data->transmit_q, skb); | |
1da177e4 LT |
184 | break; |
185 | } | |
186 | } | |
187 | ||
9c724357 | 188 | } while (test_bit(BFUSB_TX_WAKEUP, &data->state)); |
1da177e4 | 189 | |
9c724357 | 190 | clear_bit(BFUSB_TX_PROCESS, &data->state); |
1da177e4 LT |
191 | } |
192 | ||
7d12e780 | 193 | static void bfusb_tx_complete(struct urb *urb) |
1da177e4 LT |
194 | { |
195 | struct sk_buff *skb = (struct sk_buff *) urb->context; | |
9c724357 | 196 | struct bfusb_data *data = (struct bfusb_data *) skb->dev; |
1da177e4 | 197 | |
9c724357 | 198 | BT_DBG("bfusb %p urb %p skb %p len %d", data, urb, skb, skb->len); |
1da177e4 | 199 | |
9c724357 | 200 | atomic_dec(&data->pending_tx); |
1da177e4 | 201 | |
9c724357 | 202 | if (!test_bit(HCI_RUNNING, &data->hdev->flags)) |
1da177e4 LT |
203 | return; |
204 | ||
205 | if (!urb->status) | |
9c724357 | 206 | data->hdev->stat.byte_tx += skb->len; |
1da177e4 | 207 | else |
9c724357 | 208 | data->hdev->stat.err_tx++; |
1da177e4 | 209 | |
9c724357 | 210 | read_lock(&data->lock); |
1da177e4 | 211 | |
9c724357 MH |
212 | skb_unlink(skb, &data->pending_q); |
213 | skb_queue_tail(&data->completed_q, skb); | |
1da177e4 | 214 | |
9c724357 | 215 | bfusb_tx_wakeup(data); |
1da177e4 | 216 | |
9c724357 | 217 | read_unlock(&data->lock); |
1da177e4 LT |
218 | } |
219 | ||
220 | ||
9c724357 | 221 | static int bfusb_rx_submit(struct bfusb_data *data, struct urb *urb) |
1da177e4 | 222 | { |
9c724357 | 223 | struct bfusb_data_scb *scb; |
1da177e4 LT |
224 | struct sk_buff *skb; |
225 | int err, pipe, size = HCI_MAX_FRAME_SIZE + 32; | |
226 | ||
227 | BT_DBG("bfusb %p urb %p", bfusb, urb); | |
228 | ||
229 | if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC))) | |
230 | return -ENOMEM; | |
231 | ||
9c724357 MH |
232 | skb = bt_skb_alloc(size, GFP_ATOMIC); |
233 | if (!skb) { | |
1da177e4 LT |
234 | usb_free_urb(urb); |
235 | return -ENOMEM; | |
236 | } | |
237 | ||
9c724357 | 238 | skb->dev = (void *) data; |
1da177e4 | 239 | |
9c724357 | 240 | scb = (struct bfusb_data_scb *) skb->cb; |
1da177e4 LT |
241 | scb->urb = urb; |
242 | ||
9c724357 | 243 | pipe = usb_rcvbulkpipe(data->udev, data->bulk_in_ep); |
1da177e4 | 244 | |
9c724357 | 245 | usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, size, |
1da177e4 LT |
246 | bfusb_rx_complete, skb); |
247 | ||
9c724357 | 248 | skb_queue_tail(&data->pending_q, skb); |
1da177e4 LT |
249 | |
250 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
251 | if (err) { | |
252 | BT_ERR("%s bulk rx submit failed urb %p err %d", | |
9c724357 MH |
253 | data->hdev->name, urb, err); |
254 | skb_unlink(skb, &data->pending_q); | |
1da177e4 LT |
255 | kfree_skb(skb); |
256 | usb_free_urb(urb); | |
257 | } | |
258 | ||
259 | return err; | |
260 | } | |
261 | ||
9c724357 | 262 | static inline int bfusb_recv_block(struct bfusb_data *data, int hdr, unsigned char *buf, int len) |
1da177e4 | 263 | { |
9c724357 | 264 | BT_DBG("bfusb %p hdr 0x%02x data %p len %d", data, hdr, buf, len); |
1da177e4 LT |
265 | |
266 | if (hdr & 0x10) { | |
9c724357 MH |
267 | BT_ERR("%s error in block", data->hdev->name); |
268 | if (data->reassembly) | |
269 | kfree_skb(data->reassembly); | |
270 | data->reassembly = NULL; | |
1da177e4 LT |
271 | return -EIO; |
272 | } | |
273 | ||
274 | if (hdr & 0x04) { | |
275 | struct sk_buff *skb; | |
276 | unsigned char pkt_type; | |
277 | int pkt_len = 0; | |
278 | ||
9c724357 MH |
279 | if (data->reassembly) { |
280 | BT_ERR("%s unexpected start block", data->hdev->name); | |
281 | kfree_skb(data->reassembly); | |
282 | data->reassembly = NULL; | |
1da177e4 LT |
283 | } |
284 | ||
285 | if (len < 1) { | |
9c724357 | 286 | BT_ERR("%s no packet type found", data->hdev->name); |
1da177e4 LT |
287 | return -EPROTO; |
288 | } | |
289 | ||
9c724357 | 290 | pkt_type = *buf++; len--; |
1da177e4 LT |
291 | |
292 | switch (pkt_type) { | |
293 | case HCI_EVENT_PKT: | |
294 | if (len >= HCI_EVENT_HDR_SIZE) { | |
9c724357 | 295 | struct hci_event_hdr *hdr = (struct hci_event_hdr *) buf; |
1da177e4 LT |
296 | pkt_len = HCI_EVENT_HDR_SIZE + hdr->plen; |
297 | } else { | |
9c724357 | 298 | BT_ERR("%s event block is too short", data->hdev->name); |
1da177e4 LT |
299 | return -EILSEQ; |
300 | } | |
301 | break; | |
302 | ||
303 | case HCI_ACLDATA_PKT: | |
304 | if (len >= HCI_ACL_HDR_SIZE) { | |
9c724357 | 305 | struct hci_acl_hdr *hdr = (struct hci_acl_hdr *) buf; |
1da177e4 LT |
306 | pkt_len = HCI_ACL_HDR_SIZE + __le16_to_cpu(hdr->dlen); |
307 | } else { | |
9c724357 | 308 | BT_ERR("%s data block is too short", data->hdev->name); |
1da177e4 LT |
309 | return -EILSEQ; |
310 | } | |
311 | break; | |
312 | ||
313 | case HCI_SCODATA_PKT: | |
314 | if (len >= HCI_SCO_HDR_SIZE) { | |
9c724357 | 315 | struct hci_sco_hdr *hdr = (struct hci_sco_hdr *) buf; |
1da177e4 LT |
316 | pkt_len = HCI_SCO_HDR_SIZE + hdr->dlen; |
317 | } else { | |
9c724357 | 318 | BT_ERR("%s audio block is too short", data->hdev->name); |
1da177e4 LT |
319 | return -EILSEQ; |
320 | } | |
321 | break; | |
322 | } | |
323 | ||
324 | skb = bt_skb_alloc(pkt_len, GFP_ATOMIC); | |
325 | if (!skb) { | |
9c724357 | 326 | BT_ERR("%s no memory for the packet", data->hdev->name); |
1da177e4 LT |
327 | return -ENOMEM; |
328 | } | |
329 | ||
9c724357 | 330 | skb->dev = (void *) data->hdev; |
0d48d939 | 331 | bt_cb(skb)->pkt_type = pkt_type; |
1da177e4 | 332 | |
9c724357 | 333 | data->reassembly = skb; |
1da177e4 | 334 | } else { |
9c724357 MH |
335 | if (!data->reassembly) { |
336 | BT_ERR("%s unexpected continuation block", data->hdev->name); | |
1da177e4 LT |
337 | return -EIO; |
338 | } | |
339 | } | |
340 | ||
341 | if (len > 0) | |
9c724357 | 342 | memcpy(skb_put(data->reassembly, len), buf, len); |
1da177e4 LT |
343 | |
344 | if (hdr & 0x08) { | |
9c724357 MH |
345 | hci_recv_frame(data->reassembly); |
346 | data->reassembly = NULL; | |
1da177e4 LT |
347 | } |
348 | ||
349 | return 0; | |
350 | } | |
351 | ||
7d12e780 | 352 | static void bfusb_rx_complete(struct urb *urb) |
1da177e4 LT |
353 | { |
354 | struct sk_buff *skb = (struct sk_buff *) urb->context; | |
9c724357 | 355 | struct bfusb_data *data = (struct bfusb_data *) skb->dev; |
1da177e4 LT |
356 | unsigned char *buf = urb->transfer_buffer; |
357 | int count = urb->actual_length; | |
358 | int err, hdr, len; | |
359 | ||
360 | BT_DBG("bfusb %p urb %p skb %p len %d", bfusb, urb, skb, skb->len); | |
361 | ||
9c724357 | 362 | read_lock(&data->lock); |
1da177e4 | 363 | |
9c724357 | 364 | if (!test_bit(HCI_RUNNING, &data->hdev->flags)) |
1da177e4 LT |
365 | goto unlock; |
366 | ||
367 | if (urb->status || !count) | |
368 | goto resubmit; | |
369 | ||
9c724357 | 370 | data->hdev->stat.byte_rx += count; |
1da177e4 LT |
371 | |
372 | skb_put(skb, count); | |
373 | ||
374 | while (count) { | |
375 | hdr = buf[0] | (buf[1] << 8); | |
376 | ||
377 | if (hdr & 0x4000) { | |
378 | len = 0; | |
379 | count -= 2; | |
380 | buf += 2; | |
381 | } else { | |
382 | len = (buf[2] == 0) ? 256 : buf[2]; | |
383 | count -= 3; | |
384 | buf += 3; | |
385 | } | |
386 | ||
387 | if (count < len) { | |
388 | BT_ERR("%s block extends over URB buffer ranges", | |
9c724357 | 389 | data->hdev->name); |
1da177e4 LT |
390 | } |
391 | ||
392 | if ((hdr & 0xe1) == 0xc1) | |
9c724357 | 393 | bfusb_recv_block(data, hdr, buf, len); |
1da177e4 LT |
394 | |
395 | count -= len; | |
396 | buf += len; | |
397 | } | |
398 | ||
9c724357 | 399 | skb_unlink(skb, &data->pending_q); |
1da177e4 LT |
400 | kfree_skb(skb); |
401 | ||
9c724357 | 402 | bfusb_rx_submit(data, urb); |
1da177e4 | 403 | |
9c724357 | 404 | read_unlock(&data->lock); |
1da177e4 LT |
405 | |
406 | return; | |
407 | ||
408 | resubmit: | |
9c724357 | 409 | urb->dev = data->udev; |
1da177e4 LT |
410 | |
411 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
412 | if (err) { | |
413 | BT_ERR("%s bulk resubmit failed urb %p err %d", | |
9c724357 | 414 | data->hdev->name, urb, err); |
1da177e4 LT |
415 | } |
416 | ||
417 | unlock: | |
9c724357 | 418 | read_unlock(&data->lock); |
1da177e4 LT |
419 | } |
420 | ||
1da177e4 LT |
421 | static int bfusb_open(struct hci_dev *hdev) |
422 | { | |
9c724357 | 423 | struct bfusb_data *data = hdev->driver_data; |
1da177e4 LT |
424 | unsigned long flags; |
425 | int i, err; | |
426 | ||
9c724357 | 427 | BT_DBG("hdev %p bfusb %p", hdev, data); |
1da177e4 LT |
428 | |
429 | if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) | |
430 | return 0; | |
431 | ||
9c724357 | 432 | write_lock_irqsave(&data->lock, flags); |
1da177e4 | 433 | |
9c724357 | 434 | err = bfusb_rx_submit(data, NULL); |
1da177e4 LT |
435 | if (!err) { |
436 | for (i = 1; i < BFUSB_MAX_BULK_RX; i++) | |
9c724357 | 437 | bfusb_rx_submit(data, NULL); |
1da177e4 LT |
438 | } else { |
439 | clear_bit(HCI_RUNNING, &hdev->flags); | |
440 | } | |
441 | ||
9c724357 | 442 | write_unlock_irqrestore(&data->lock, flags); |
1da177e4 LT |
443 | |
444 | return err; | |
445 | } | |
446 | ||
447 | static int bfusb_flush(struct hci_dev *hdev) | |
448 | { | |
9c724357 | 449 | struct bfusb_data *data = hdev->driver_data; |
1da177e4 | 450 | |
9c724357 | 451 | BT_DBG("hdev %p bfusb %p", hdev, data); |
1da177e4 | 452 | |
9c724357 | 453 | skb_queue_purge(&data->transmit_q); |
1da177e4 LT |
454 | |
455 | return 0; | |
456 | } | |
457 | ||
458 | static int bfusb_close(struct hci_dev *hdev) | |
459 | { | |
9c724357 | 460 | struct bfusb_data *data = hdev->driver_data; |
1da177e4 LT |
461 | unsigned long flags; |
462 | ||
9c724357 | 463 | BT_DBG("hdev %p bfusb %p", hdev, data); |
1da177e4 LT |
464 | |
465 | if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) | |
466 | return 0; | |
467 | ||
9c724357 MH |
468 | write_lock_irqsave(&data->lock, flags); |
469 | write_unlock_irqrestore(&data->lock, flags); | |
1da177e4 | 470 | |
9c724357 | 471 | bfusb_unlink_urbs(data); |
1da177e4 LT |
472 | bfusb_flush(hdev); |
473 | ||
474 | return 0; | |
475 | } | |
476 | ||
477 | static int bfusb_send_frame(struct sk_buff *skb) | |
478 | { | |
479 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; | |
9c724357 | 480 | struct bfusb_data *data; |
1da177e4 LT |
481 | struct sk_buff *nskb; |
482 | unsigned char buf[3]; | |
483 | int sent = 0, size, count; | |
484 | ||
0d48d939 | 485 | BT_DBG("hdev %p skb %p type %d len %d", hdev, skb, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 LT |
486 | |
487 | if (!hdev) { | |
488 | BT_ERR("Frame for unknown HCI device (hdev=NULL)"); | |
489 | return -ENODEV; | |
490 | } | |
491 | ||
492 | if (!test_bit(HCI_RUNNING, &hdev->flags)) | |
493 | return -EBUSY; | |
494 | ||
9c724357 | 495 | data = hdev->driver_data; |
1da177e4 | 496 | |
0d48d939 | 497 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
498 | case HCI_COMMAND_PKT: |
499 | hdev->stat.cmd_tx++; | |
500 | break; | |
501 | case HCI_ACLDATA_PKT: | |
502 | hdev->stat.acl_tx++; | |
503 | break; | |
504 | case HCI_SCODATA_PKT: | |
505 | hdev->stat.sco_tx++; | |
506 | break; | |
507 | }; | |
508 | ||
509 | /* Prepend skb with frame type */ | |
0d48d939 | 510 | memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1); |
1da177e4 LT |
511 | |
512 | count = skb->len; | |
513 | ||
514 | /* Max HCI frame size seems to be 1511 + 1 */ | |
9c724357 MH |
515 | nskb = bt_skb_alloc(count + 32, GFP_ATOMIC); |
516 | if (!nskb) { | |
1da177e4 LT |
517 | BT_ERR("Can't allocate memory for new packet"); |
518 | return -ENOMEM; | |
519 | } | |
520 | ||
9c724357 | 521 | nskb->dev = (void *) data; |
1da177e4 LT |
522 | |
523 | while (count) { | |
524 | size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE); | |
525 | ||
526 | buf[0] = 0xc1 | ((sent == 0) ? 0x04 : 0) | ((count == size) ? 0x08 : 0); | |
527 | buf[1] = 0x00; | |
528 | buf[2] = (size == BFUSB_MAX_BLOCK_SIZE) ? 0 : size; | |
529 | ||
530 | memcpy(skb_put(nskb, 3), buf, 3); | |
531 | memcpy(skb_put(nskb, size), skb->data + sent, size); | |
532 | ||
533 | sent += size; | |
534 | count -= size; | |
535 | } | |
536 | ||
537 | /* Don't send frame with multiple size of bulk max packet */ | |
9c724357 | 538 | if ((nskb->len % data->bulk_pkt_size) == 0) { |
1da177e4 LT |
539 | buf[0] = 0xdd; |
540 | buf[1] = 0x00; | |
541 | memcpy(skb_put(nskb, 2), buf, 2); | |
542 | } | |
543 | ||
9c724357 | 544 | read_lock(&data->lock); |
1da177e4 | 545 | |
9c724357 MH |
546 | skb_queue_tail(&data->transmit_q, nskb); |
547 | bfusb_tx_wakeup(data); | |
1da177e4 | 548 | |
9c724357 | 549 | read_unlock(&data->lock); |
1da177e4 LT |
550 | |
551 | kfree_skb(skb); | |
552 | ||
553 | return 0; | |
554 | } | |
555 | ||
556 | static void bfusb_destruct(struct hci_dev *hdev) | |
557 | { | |
9c724357 | 558 | struct bfusb_data *data = hdev->driver_data; |
1da177e4 | 559 | |
9c724357 | 560 | BT_DBG("hdev %p bfusb %p", hdev, data); |
1da177e4 | 561 | |
9c724357 | 562 | kfree(data); |
1da177e4 LT |
563 | } |
564 | ||
565 | static int bfusb_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg) | |
566 | { | |
567 | return -ENOIOCTLCMD; | |
568 | } | |
569 | ||
9c724357 | 570 | static int bfusb_load_firmware(struct bfusb_data *data, unsigned char *firmware, int count) |
1da177e4 LT |
571 | { |
572 | unsigned char *buf; | |
573 | int err, pipe, len, size, sent = 0; | |
574 | ||
9c724357 | 575 | BT_DBG("bfusb %p udev %p", data, data->udev); |
1da177e4 LT |
576 | |
577 | BT_INFO("BlueFRITZ! USB loading firmware"); | |
578 | ||
9c724357 | 579 | pipe = usb_sndctrlpipe(data->udev, 0); |
1da177e4 | 580 | |
9c724357 | 581 | if (usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION, |
1da177e4 LT |
582 | 0, 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT) < 0) { |
583 | BT_ERR("Can't change to loading configuration"); | |
584 | return -EBUSY; | |
585 | } | |
586 | ||
9c724357 | 587 | data->udev->toggle[0] = data->udev->toggle[1] = 0; |
1da177e4 LT |
588 | |
589 | buf = kmalloc(BFUSB_MAX_BLOCK_SIZE + 3, GFP_ATOMIC); | |
590 | if (!buf) { | |
591 | BT_ERR("Can't allocate memory chunk for firmware"); | |
592 | return -ENOMEM; | |
593 | } | |
594 | ||
9c724357 | 595 | pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep); |
1da177e4 LT |
596 | |
597 | while (count) { | |
598 | size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE + 3); | |
599 | ||
600 | memcpy(buf, firmware + sent, size); | |
601 | ||
9c724357 | 602 | err = usb_bulk_msg(data->udev, pipe, buf, size, |
1da177e4 LT |
603 | &len, BFUSB_BLOCK_TIMEOUT); |
604 | ||
605 | if (err || (len != size)) { | |
606 | BT_ERR("Error in firmware loading"); | |
607 | goto error; | |
608 | } | |
609 | ||
610 | sent += size; | |
611 | count -= size; | |
612 | } | |
613 | ||
9c724357 MH |
614 | err = usb_bulk_msg(data->udev, pipe, NULL, 0, |
615 | &len, BFUSB_BLOCK_TIMEOUT); | |
616 | if (err < 0) { | |
1da177e4 LT |
617 | BT_ERR("Error in null packet request"); |
618 | goto error; | |
619 | } | |
620 | ||
9c724357 | 621 | pipe = usb_sndctrlpipe(data->udev, 0); |
1da177e4 | 622 | |
9c724357 MH |
623 | err = usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION, |
624 | 0, 2, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); | |
625 | if (err < 0) { | |
1da177e4 LT |
626 | BT_ERR("Can't change to running configuration"); |
627 | goto error; | |
628 | } | |
629 | ||
9c724357 | 630 | data->udev->toggle[0] = data->udev->toggle[1] = 0; |
1da177e4 LT |
631 | |
632 | BT_INFO("BlueFRITZ! USB device ready"); | |
633 | ||
634 | kfree(buf); | |
635 | return 0; | |
636 | ||
637 | error: | |
638 | kfree(buf); | |
639 | ||
9c724357 | 640 | pipe = usb_sndctrlpipe(data->udev, 0); |
1da177e4 | 641 | |
9c724357 | 642 | usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION, |
1da177e4 LT |
643 | 0, 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); |
644 | ||
645 | return err; | |
646 | } | |
647 | ||
648 | static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *id) | |
649 | { | |
650 | const struct firmware *firmware; | |
651 | struct usb_device *udev = interface_to_usbdev(intf); | |
652 | struct usb_host_endpoint *bulk_out_ep; | |
653 | struct usb_host_endpoint *bulk_in_ep; | |
654 | struct hci_dev *hdev; | |
9c724357 | 655 | struct bfusb_data *data; |
1da177e4 LT |
656 | |
657 | BT_DBG("intf %p id %p", intf, id); | |
658 | ||
659 | if (ignore) | |
660 | return -ENODEV; | |
661 | ||
662 | /* Check number of endpoints */ | |
663 | if (intf->cur_altsetting->desc.bNumEndpoints < 2) | |
664 | return -EIO; | |
665 | ||
666 | bulk_out_ep = &intf->cur_altsetting->endpoint[0]; | |
667 | bulk_in_ep = &intf->cur_altsetting->endpoint[1]; | |
668 | ||
669 | if (!bulk_out_ep || !bulk_in_ep) { | |
670 | BT_ERR("Bulk endpoints not found"); | |
671 | goto done; | |
672 | } | |
673 | ||
674 | /* Initialize control structure and load firmware */ | |
9c724357 MH |
675 | data = kzalloc(sizeof(struct bfusb_data), GFP_KERNEL); |
676 | if (!data) { | |
1da177e4 LT |
677 | BT_ERR("Can't allocate memory for control structure"); |
678 | goto done; | |
679 | } | |
680 | ||
9c724357 MH |
681 | data->udev = udev; |
682 | data->bulk_in_ep = bulk_in_ep->desc.bEndpointAddress; | |
683 | data->bulk_out_ep = bulk_out_ep->desc.bEndpointAddress; | |
684 | data->bulk_pkt_size = le16_to_cpu(bulk_out_ep->desc.wMaxPacketSize); | |
1da177e4 | 685 | |
9c724357 | 686 | rwlock_init(&data->lock); |
1da177e4 | 687 | |
9c724357 | 688 | data->reassembly = NULL; |
1da177e4 | 689 | |
9c724357 MH |
690 | skb_queue_head_init(&data->transmit_q); |
691 | skb_queue_head_init(&data->pending_q); | |
692 | skb_queue_head_init(&data->completed_q); | |
1da177e4 LT |
693 | |
694 | if (request_firmware(&firmware, "bfubase.frm", &udev->dev) < 0) { | |
695 | BT_ERR("Firmware request failed"); | |
696 | goto error; | |
697 | } | |
698 | ||
699 | BT_DBG("firmware data %p size %d", firmware->data, firmware->size); | |
700 | ||
9c724357 | 701 | if (bfusb_load_firmware(data, firmware->data, firmware->size) < 0) { |
1da177e4 LT |
702 | BT_ERR("Firmware loading failed"); |
703 | goto release; | |
704 | } | |
705 | ||
706 | release_firmware(firmware); | |
707 | ||
708 | /* Initialize and register HCI device */ | |
709 | hdev = hci_alloc_dev(); | |
710 | if (!hdev) { | |
711 | BT_ERR("Can't allocate HCI device"); | |
712 | goto error; | |
713 | } | |
714 | ||
9c724357 | 715 | data->hdev = hdev; |
1da177e4 LT |
716 | |
717 | hdev->type = HCI_USB; | |
9c724357 | 718 | hdev->driver_data = data; |
1da177e4 LT |
719 | SET_HCIDEV_DEV(hdev, &intf->dev); |
720 | ||
721 | hdev->open = bfusb_open; | |
722 | hdev->close = bfusb_close; | |
723 | hdev->flush = bfusb_flush; | |
724 | hdev->send = bfusb_send_frame; | |
725 | hdev->destruct = bfusb_destruct; | |
726 | hdev->ioctl = bfusb_ioctl; | |
727 | ||
728 | hdev->owner = THIS_MODULE; | |
729 | ||
730 | if (hci_register_dev(hdev) < 0) { | |
731 | BT_ERR("Can't register HCI device"); | |
732 | hci_free_dev(hdev); | |
733 | goto error; | |
734 | } | |
735 | ||
9c724357 | 736 | usb_set_intfdata(intf, data); |
1da177e4 LT |
737 | |
738 | return 0; | |
739 | ||
740 | release: | |
741 | release_firmware(firmware); | |
742 | ||
743 | error: | |
9c724357 | 744 | kfree(data); |
1da177e4 LT |
745 | |
746 | done: | |
747 | return -EIO; | |
748 | } | |
749 | ||
750 | static void bfusb_disconnect(struct usb_interface *intf) | |
751 | { | |
9c724357 MH |
752 | struct bfusb_data *data = usb_get_intfdata(intf); |
753 | struct hci_dev *hdev = data->hdev; | |
1da177e4 LT |
754 | |
755 | BT_DBG("intf %p", intf); | |
756 | ||
757 | if (!hdev) | |
758 | return; | |
759 | ||
760 | usb_set_intfdata(intf, NULL); | |
761 | ||
762 | bfusb_close(hdev); | |
763 | ||
764 | if (hci_unregister_dev(hdev) < 0) | |
765 | BT_ERR("Can't unregister HCI device %s", hdev->name); | |
766 | ||
767 | hci_free_dev(hdev); | |
768 | } | |
769 | ||
770 | static struct usb_driver bfusb_driver = { | |
1da177e4 LT |
771 | .name = "bfusb", |
772 | .probe = bfusb_probe, | |
773 | .disconnect = bfusb_disconnect, | |
774 | .id_table = bfusb_table, | |
775 | }; | |
776 | ||
777 | static int __init bfusb_init(void) | |
778 | { | |
779 | int err; | |
780 | ||
781 | BT_INFO("BlueFRITZ! USB driver ver %s", VERSION); | |
782 | ||
9c724357 MH |
783 | err = usb_register(&bfusb_driver); |
784 | if (err < 0) | |
1da177e4 LT |
785 | BT_ERR("Failed to register BlueFRITZ! USB driver"); |
786 | ||
787 | return err; | |
788 | } | |
789 | ||
790 | static void __exit bfusb_exit(void) | |
791 | { | |
792 | usb_deregister(&bfusb_driver); | |
793 | } | |
794 | ||
795 | module_init(bfusb_init); | |
796 | module_exit(bfusb_exit); | |
797 | ||
798 | module_param(ignore, bool, 0644); | |
799 | MODULE_PARM_DESC(ignore, "Ignore devices from the matching table"); | |
800 | ||
801 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); | |
802 | MODULE_DESCRIPTION("BlueFRITZ! USB driver ver " VERSION); | |
803 | MODULE_VERSION(VERSION); | |
804 | MODULE_LICENSE("GPL"); |