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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 | ||
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 | 259 | BT_ERR("%s error in block", data->hdev->name); |
b1fb0683 | 260 | kfree_skb(data->reassembly); |
9c724357 | 261 | data->reassembly = NULL; |
1da177e4 LT |
262 | return -EIO; |
263 | } | |
264 | ||
265 | if (hdr & 0x04) { | |
266 | struct sk_buff *skb; | |
267 | unsigned char pkt_type; | |
268 | int pkt_len = 0; | |
269 | ||
9c724357 MH |
270 | if (data->reassembly) { |
271 | BT_ERR("%s unexpected start block", data->hdev->name); | |
272 | kfree_skb(data->reassembly); | |
273 | data->reassembly = NULL; | |
1da177e4 LT |
274 | } |
275 | ||
276 | if (len < 1) { | |
9c724357 | 277 | BT_ERR("%s no packet type found", data->hdev->name); |
1da177e4 LT |
278 | return -EPROTO; |
279 | } | |
280 | ||
9c724357 | 281 | pkt_type = *buf++; len--; |
1da177e4 LT |
282 | |
283 | switch (pkt_type) { | |
284 | case HCI_EVENT_PKT: | |
285 | if (len >= HCI_EVENT_HDR_SIZE) { | |
9c724357 | 286 | struct hci_event_hdr *hdr = (struct hci_event_hdr *) buf; |
1da177e4 LT |
287 | pkt_len = HCI_EVENT_HDR_SIZE + hdr->plen; |
288 | } else { | |
9c724357 | 289 | BT_ERR("%s event block is too short", data->hdev->name); |
1da177e4 LT |
290 | return -EILSEQ; |
291 | } | |
292 | break; | |
293 | ||
294 | case HCI_ACLDATA_PKT: | |
295 | if (len >= HCI_ACL_HDR_SIZE) { | |
9c724357 | 296 | struct hci_acl_hdr *hdr = (struct hci_acl_hdr *) buf; |
1da177e4 LT |
297 | pkt_len = HCI_ACL_HDR_SIZE + __le16_to_cpu(hdr->dlen); |
298 | } else { | |
9c724357 | 299 | BT_ERR("%s data block is too short", data->hdev->name); |
1da177e4 LT |
300 | return -EILSEQ; |
301 | } | |
302 | break; | |
303 | ||
304 | case HCI_SCODATA_PKT: | |
305 | if (len >= HCI_SCO_HDR_SIZE) { | |
9c724357 | 306 | struct hci_sco_hdr *hdr = (struct hci_sco_hdr *) buf; |
1da177e4 LT |
307 | pkt_len = HCI_SCO_HDR_SIZE + hdr->dlen; |
308 | } else { | |
9c724357 | 309 | BT_ERR("%s audio block is too short", data->hdev->name); |
1da177e4 LT |
310 | return -EILSEQ; |
311 | } | |
312 | break; | |
313 | } | |
314 | ||
315 | skb = bt_skb_alloc(pkt_len, GFP_ATOMIC); | |
316 | if (!skb) { | |
9c724357 | 317 | BT_ERR("%s no memory for the packet", data->hdev->name); |
1da177e4 LT |
318 | return -ENOMEM; |
319 | } | |
320 | ||
0d48d939 | 321 | bt_cb(skb)->pkt_type = pkt_type; |
1da177e4 | 322 | |
9c724357 | 323 | data->reassembly = skb; |
1da177e4 | 324 | } else { |
9c724357 MH |
325 | if (!data->reassembly) { |
326 | BT_ERR("%s unexpected continuation block", data->hdev->name); | |
1da177e4 LT |
327 | return -EIO; |
328 | } | |
329 | } | |
330 | ||
331 | if (len > 0) | |
9c724357 | 332 | memcpy(skb_put(data->reassembly, len), buf, len); |
1da177e4 LT |
333 | |
334 | if (hdr & 0x08) { | |
e1a26170 | 335 | hci_recv_frame(data->hdev, data->reassembly); |
9c724357 | 336 | data->reassembly = NULL; |
1da177e4 LT |
337 | } |
338 | ||
339 | return 0; | |
340 | } | |
341 | ||
7d12e780 | 342 | static void bfusb_rx_complete(struct urb *urb) |
1da177e4 LT |
343 | { |
344 | struct sk_buff *skb = (struct sk_buff *) urb->context; | |
9c724357 | 345 | struct bfusb_data *data = (struct bfusb_data *) skb->dev; |
1da177e4 LT |
346 | unsigned char *buf = urb->transfer_buffer; |
347 | int count = urb->actual_length; | |
348 | int err, hdr, len; | |
349 | ||
a418b893 | 350 | BT_DBG("bfusb %p urb %p skb %p len %d", data, urb, skb, skb->len); |
1da177e4 | 351 | |
9c724357 | 352 | read_lock(&data->lock); |
1da177e4 | 353 | |
9c724357 | 354 | if (!test_bit(HCI_RUNNING, &data->hdev->flags)) |
1da177e4 LT |
355 | goto unlock; |
356 | ||
357 | if (urb->status || !count) | |
358 | goto resubmit; | |
359 | ||
9c724357 | 360 | data->hdev->stat.byte_rx += count; |
1da177e4 LT |
361 | |
362 | skb_put(skb, count); | |
363 | ||
364 | while (count) { | |
365 | hdr = buf[0] | (buf[1] << 8); | |
366 | ||
367 | if (hdr & 0x4000) { | |
368 | len = 0; | |
369 | count -= 2; | |
370 | buf += 2; | |
371 | } else { | |
372 | len = (buf[2] == 0) ? 256 : buf[2]; | |
373 | count -= 3; | |
374 | buf += 3; | |
375 | } | |
376 | ||
377 | if (count < len) { | |
378 | BT_ERR("%s block extends over URB buffer ranges", | |
9c724357 | 379 | data->hdev->name); |
1da177e4 LT |
380 | } |
381 | ||
382 | if ((hdr & 0xe1) == 0xc1) | |
9c724357 | 383 | bfusb_recv_block(data, hdr, buf, len); |
1da177e4 LT |
384 | |
385 | count -= len; | |
386 | buf += len; | |
387 | } | |
388 | ||
9c724357 | 389 | skb_unlink(skb, &data->pending_q); |
1da177e4 LT |
390 | kfree_skb(skb); |
391 | ||
9c724357 | 392 | bfusb_rx_submit(data, urb); |
1da177e4 | 393 | |
9c724357 | 394 | read_unlock(&data->lock); |
1da177e4 LT |
395 | |
396 | return; | |
397 | ||
398 | resubmit: | |
9c724357 | 399 | urb->dev = data->udev; |
1da177e4 LT |
400 | |
401 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
402 | if (err) { | |
403 | BT_ERR("%s bulk resubmit failed urb %p err %d", | |
9c724357 | 404 | data->hdev->name, urb, err); |
1da177e4 LT |
405 | } |
406 | ||
407 | unlock: | |
9c724357 | 408 | read_unlock(&data->lock); |
1da177e4 LT |
409 | } |
410 | ||
1da177e4 LT |
411 | static int bfusb_open(struct hci_dev *hdev) |
412 | { | |
155961e8 | 413 | struct bfusb_data *data = hci_get_drvdata(hdev); |
1da177e4 LT |
414 | unsigned long flags; |
415 | int i, err; | |
416 | ||
9c724357 | 417 | BT_DBG("hdev %p bfusb %p", hdev, data); |
1da177e4 LT |
418 | |
419 | if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) | |
420 | return 0; | |
421 | ||
9c724357 | 422 | write_lock_irqsave(&data->lock, flags); |
1da177e4 | 423 | |
9c724357 | 424 | err = bfusb_rx_submit(data, NULL); |
1da177e4 LT |
425 | if (!err) { |
426 | for (i = 1; i < BFUSB_MAX_BULK_RX; i++) | |
9c724357 | 427 | bfusb_rx_submit(data, NULL); |
1da177e4 LT |
428 | } else { |
429 | clear_bit(HCI_RUNNING, &hdev->flags); | |
430 | } | |
431 | ||
9c724357 | 432 | write_unlock_irqrestore(&data->lock, flags); |
1da177e4 LT |
433 | |
434 | return err; | |
435 | } | |
436 | ||
437 | static int bfusb_flush(struct hci_dev *hdev) | |
438 | { | |
155961e8 | 439 | struct bfusb_data *data = hci_get_drvdata(hdev); |
1da177e4 | 440 | |
9c724357 | 441 | BT_DBG("hdev %p bfusb %p", hdev, data); |
1da177e4 | 442 | |
9c724357 | 443 | skb_queue_purge(&data->transmit_q); |
1da177e4 LT |
444 | |
445 | return 0; | |
446 | } | |
447 | ||
448 | static int bfusb_close(struct hci_dev *hdev) | |
449 | { | |
155961e8 | 450 | struct bfusb_data *data = hci_get_drvdata(hdev); |
1da177e4 LT |
451 | unsigned long flags; |
452 | ||
9c724357 | 453 | BT_DBG("hdev %p bfusb %p", hdev, data); |
1da177e4 LT |
454 | |
455 | if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) | |
456 | return 0; | |
457 | ||
9c724357 MH |
458 | write_lock_irqsave(&data->lock, flags); |
459 | write_unlock_irqrestore(&data->lock, flags); | |
1da177e4 | 460 | |
9c724357 | 461 | bfusb_unlink_urbs(data); |
1da177e4 LT |
462 | bfusb_flush(hdev); |
463 | ||
464 | return 0; | |
465 | } | |
466 | ||
7bd8f09f | 467 | static int bfusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 | 468 | { |
9c724357 | 469 | struct bfusb_data *data; |
1da177e4 LT |
470 | struct sk_buff *nskb; |
471 | unsigned char buf[3]; | |
472 | int sent = 0, size, count; | |
473 | ||
0d48d939 | 474 | BT_DBG("hdev %p skb %p type %d len %d", hdev, skb, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 LT |
475 | |
476 | if (!hdev) { | |
477 | BT_ERR("Frame for unknown HCI device (hdev=NULL)"); | |
478 | return -ENODEV; | |
479 | } | |
480 | ||
481 | if (!test_bit(HCI_RUNNING, &hdev->flags)) | |
482 | return -EBUSY; | |
483 | ||
155961e8 | 484 | data = hci_get_drvdata(hdev); |
1da177e4 | 485 | |
0d48d939 | 486 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
487 | case HCI_COMMAND_PKT: |
488 | hdev->stat.cmd_tx++; | |
489 | break; | |
490 | case HCI_ACLDATA_PKT: | |
491 | hdev->stat.acl_tx++; | |
492 | break; | |
493 | case HCI_SCODATA_PKT: | |
494 | hdev->stat.sco_tx++; | |
495 | break; | |
496 | }; | |
497 | ||
498 | /* Prepend skb with frame type */ | |
0d48d939 | 499 | memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1); |
1da177e4 LT |
500 | |
501 | count = skb->len; | |
502 | ||
503 | /* Max HCI frame size seems to be 1511 + 1 */ | |
9c724357 MH |
504 | nskb = bt_skb_alloc(count + 32, GFP_ATOMIC); |
505 | if (!nskb) { | |
1da177e4 LT |
506 | BT_ERR("Can't allocate memory for new packet"); |
507 | return -ENOMEM; | |
508 | } | |
509 | ||
9c724357 | 510 | nskb->dev = (void *) data; |
1da177e4 LT |
511 | |
512 | while (count) { | |
513 | size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE); | |
514 | ||
515 | buf[0] = 0xc1 | ((sent == 0) ? 0x04 : 0) | ((count == size) ? 0x08 : 0); | |
516 | buf[1] = 0x00; | |
517 | buf[2] = (size == BFUSB_MAX_BLOCK_SIZE) ? 0 : size; | |
518 | ||
519 | memcpy(skb_put(nskb, 3), buf, 3); | |
d626f62b | 520 | skb_copy_from_linear_data_offset(skb, sent, skb_put(nskb, size), size); |
1da177e4 LT |
521 | |
522 | sent += size; | |
523 | count -= size; | |
524 | } | |
525 | ||
526 | /* Don't send frame with multiple size of bulk max packet */ | |
9c724357 | 527 | if ((nskb->len % data->bulk_pkt_size) == 0) { |
1da177e4 LT |
528 | buf[0] = 0xdd; |
529 | buf[1] = 0x00; | |
530 | memcpy(skb_put(nskb, 2), buf, 2); | |
531 | } | |
532 | ||
9c724357 | 533 | read_lock(&data->lock); |
1da177e4 | 534 | |
9c724357 MH |
535 | skb_queue_tail(&data->transmit_q, nskb); |
536 | bfusb_tx_wakeup(data); | |
1da177e4 | 537 | |
9c724357 | 538 | read_unlock(&data->lock); |
1da177e4 LT |
539 | |
540 | kfree_skb(skb); | |
541 | ||
542 | return 0; | |
543 | } | |
544 | ||
8187b4fb DW |
545 | static int bfusb_load_firmware(struct bfusb_data *data, |
546 | const unsigned char *firmware, int count) | |
1da177e4 LT |
547 | { |
548 | unsigned char *buf; | |
549 | int err, pipe, len, size, sent = 0; | |
550 | ||
9c724357 | 551 | BT_DBG("bfusb %p udev %p", data, data->udev); |
1da177e4 LT |
552 | |
553 | BT_INFO("BlueFRITZ! USB loading firmware"); | |
554 | ||
7f103a0d DH |
555 | buf = kmalloc(BFUSB_MAX_BLOCK_SIZE + 3, GFP_KERNEL); |
556 | if (!buf) { | |
557 | BT_ERR("Can't allocate memory chunk for firmware"); | |
558 | return -ENOMEM; | |
559 | } | |
560 | ||
9c724357 | 561 | pipe = usb_sndctrlpipe(data->udev, 0); |
1da177e4 | 562 | |
9c724357 | 563 | if (usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION, |
1da177e4 LT |
564 | 0, 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT) < 0) { |
565 | BT_ERR("Can't change to loading configuration"); | |
7f103a0d | 566 | kfree(buf); |
1da177e4 LT |
567 | return -EBUSY; |
568 | } | |
569 | ||
9c724357 | 570 | data->udev->toggle[0] = data->udev->toggle[1] = 0; |
1da177e4 | 571 | |
9c724357 | 572 | pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep); |
1da177e4 LT |
573 | |
574 | while (count) { | |
575 | size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE + 3); | |
576 | ||
577 | memcpy(buf, firmware + sent, size); | |
578 | ||
9c724357 | 579 | err = usb_bulk_msg(data->udev, pipe, buf, size, |
1da177e4 LT |
580 | &len, BFUSB_BLOCK_TIMEOUT); |
581 | ||
582 | if (err || (len != size)) { | |
583 | BT_ERR("Error in firmware loading"); | |
584 | goto error; | |
585 | } | |
586 | ||
587 | sent += size; | |
588 | count -= size; | |
589 | } | |
590 | ||
9c724357 MH |
591 | err = usb_bulk_msg(data->udev, pipe, NULL, 0, |
592 | &len, BFUSB_BLOCK_TIMEOUT); | |
593 | if (err < 0) { | |
1da177e4 LT |
594 | BT_ERR("Error in null packet request"); |
595 | goto error; | |
596 | } | |
597 | ||
9c724357 | 598 | pipe = usb_sndctrlpipe(data->udev, 0); |
1da177e4 | 599 | |
9c724357 MH |
600 | err = usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION, |
601 | 0, 2, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); | |
602 | if (err < 0) { | |
1da177e4 LT |
603 | BT_ERR("Can't change to running configuration"); |
604 | goto error; | |
605 | } | |
606 | ||
9c724357 | 607 | data->udev->toggle[0] = data->udev->toggle[1] = 0; |
1da177e4 LT |
608 | |
609 | BT_INFO("BlueFRITZ! USB device ready"); | |
610 | ||
611 | kfree(buf); | |
612 | return 0; | |
613 | ||
614 | error: | |
615 | kfree(buf); | |
616 | ||
9c724357 | 617 | pipe = usb_sndctrlpipe(data->udev, 0); |
1da177e4 | 618 | |
9c724357 | 619 | usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION, |
1da177e4 LT |
620 | 0, 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); |
621 | ||
622 | return err; | |
623 | } | |
624 | ||
625 | static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *id) | |
626 | { | |
627 | const struct firmware *firmware; | |
628 | struct usb_device *udev = interface_to_usbdev(intf); | |
629 | struct usb_host_endpoint *bulk_out_ep; | |
630 | struct usb_host_endpoint *bulk_in_ep; | |
631 | struct hci_dev *hdev; | |
9c724357 | 632 | struct bfusb_data *data; |
1da177e4 LT |
633 | |
634 | BT_DBG("intf %p id %p", intf, id); | |
635 | ||
1da177e4 LT |
636 | /* Check number of endpoints */ |
637 | if (intf->cur_altsetting->desc.bNumEndpoints < 2) | |
638 | return -EIO; | |
639 | ||
640 | bulk_out_ep = &intf->cur_altsetting->endpoint[0]; | |
641 | bulk_in_ep = &intf->cur_altsetting->endpoint[1]; | |
642 | ||
643 | if (!bulk_out_ep || !bulk_in_ep) { | |
644 | BT_ERR("Bulk endpoints not found"); | |
645 | goto done; | |
646 | } | |
647 | ||
648 | /* Initialize control structure and load firmware */ | |
0213cd8d | 649 | data = devm_kzalloc(&intf->dev, sizeof(struct bfusb_data), GFP_KERNEL); |
9c724357 | 650 | if (!data) { |
1da177e4 LT |
651 | BT_ERR("Can't allocate memory for control structure"); |
652 | goto done; | |
653 | } | |
654 | ||
9c724357 MH |
655 | data->udev = udev; |
656 | data->bulk_in_ep = bulk_in_ep->desc.bEndpointAddress; | |
657 | data->bulk_out_ep = bulk_out_ep->desc.bEndpointAddress; | |
658 | data->bulk_pkt_size = le16_to_cpu(bulk_out_ep->desc.wMaxPacketSize); | |
1da177e4 | 659 | |
9c724357 | 660 | rwlock_init(&data->lock); |
1da177e4 | 661 | |
9c724357 | 662 | data->reassembly = NULL; |
1da177e4 | 663 | |
9c724357 MH |
664 | skb_queue_head_init(&data->transmit_q); |
665 | skb_queue_head_init(&data->pending_q); | |
666 | skb_queue_head_init(&data->completed_q); | |
1da177e4 LT |
667 | |
668 | if (request_firmware(&firmware, "bfubase.frm", &udev->dev) < 0) { | |
669 | BT_ERR("Firmware request failed"); | |
0213cd8d | 670 | goto done; |
1da177e4 LT |
671 | } |
672 | ||
a418b893 | 673 | BT_DBG("firmware data %p size %zu", firmware->data, firmware->size); |
1da177e4 | 674 | |
9c724357 | 675 | if (bfusb_load_firmware(data, firmware->data, firmware->size) < 0) { |
1da177e4 LT |
676 | BT_ERR("Firmware loading failed"); |
677 | goto release; | |
678 | } | |
679 | ||
680 | release_firmware(firmware); | |
681 | ||
682 | /* Initialize and register HCI device */ | |
683 | hdev = hci_alloc_dev(); | |
684 | if (!hdev) { | |
685 | BT_ERR("Can't allocate HCI device"); | |
0213cd8d | 686 | goto done; |
1da177e4 LT |
687 | } |
688 | ||
9c724357 | 689 | data->hdev = hdev; |
1da177e4 | 690 | |
c13854ce | 691 | hdev->bus = HCI_USB; |
155961e8 | 692 | hci_set_drvdata(hdev, data); |
1da177e4 LT |
693 | SET_HCIDEV_DEV(hdev, &intf->dev); |
694 | ||
19cf55a2 MH |
695 | hdev->open = bfusb_open; |
696 | hdev->close = bfusb_close; | |
697 | hdev->flush = bfusb_flush; | |
698 | hdev->send = bfusb_send_frame; | |
1da177e4 | 699 | |
1da177e4 LT |
700 | if (hci_register_dev(hdev) < 0) { |
701 | BT_ERR("Can't register HCI device"); | |
702 | hci_free_dev(hdev); | |
0213cd8d | 703 | goto done; |
1da177e4 LT |
704 | } |
705 | ||
9c724357 | 706 | usb_set_intfdata(intf, data); |
1da177e4 LT |
707 | |
708 | return 0; | |
709 | ||
710 | release: | |
711 | release_firmware(firmware); | |
712 | ||
1da177e4 LT |
713 | done: |
714 | return -EIO; | |
715 | } | |
716 | ||
717 | static void bfusb_disconnect(struct usb_interface *intf) | |
718 | { | |
9c724357 MH |
719 | struct bfusb_data *data = usb_get_intfdata(intf); |
720 | struct hci_dev *hdev = data->hdev; | |
1da177e4 LT |
721 | |
722 | BT_DBG("intf %p", intf); | |
723 | ||
724 | if (!hdev) | |
725 | return; | |
726 | ||
727 | usb_set_intfdata(intf, NULL); | |
728 | ||
729 | bfusb_close(hdev); | |
730 | ||
13ea4015 | 731 | hci_unregister_dev(hdev); |
1da177e4 LT |
732 | hci_free_dev(hdev); |
733 | } | |
734 | ||
735 | static struct usb_driver bfusb_driver = { | |
1da177e4 LT |
736 | .name = "bfusb", |
737 | .probe = bfusb_probe, | |
738 | .disconnect = bfusb_disconnect, | |
739 | .id_table = bfusb_table, | |
e1f12eb6 | 740 | .disable_hub_initiated_lpm = 1, |
1da177e4 LT |
741 | }; |
742 | ||
93f1508c | 743 | module_usb_driver(bfusb_driver); |
1da177e4 | 744 | |
1da177e4 LT |
745 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
746 | MODULE_DESCRIPTION("BlueFRITZ! USB driver ver " VERSION); | |
747 | MODULE_VERSION(VERSION); | |
748 | MODULE_LICENSE("GPL"); | |
2312119a | 749 | MODULE_FIRMWARE("bfubase.frm"); |