blob: 4c766f36d8844c05cf4a07fcd198bb2ba14b0fcb [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 *
3 * AVM BlueFRITZ! USB driver
4 *
Marcel Holtmann9c724352006-07-06 15:45:23 +02005 * Copyright (C) 2003-2006 Marcel Holtmann <marcel@holtmann.org>
Linus Torvalds1da177e2005-04-16 15:20:36 -07006 *
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
Linus Torvalds1da177e2005-04-16 15:20:36 -070024#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>
Linus Torvalds1da177e2005-04-16 15:20:36 -070030#include <linux/errno.h>
31#include <linux/skbuff.h>
32
33#include <linux/device.h>
34#include <linux/firmware.h>
35
36#include <linux/usb.h>
37
38#include <net/bluetooth/bluetooth.h>
39#include <net/bluetooth/hci_core.h>
40
41#ifndef CONFIG_BT_HCIBFUSB_DEBUG
42#undef BT_DBG
43#define BT_DBG(D...)
44#endif
45
46#define VERSION "1.1"
47
48static int ignore = 0;
49
50static struct usb_driver bfusb_driver;
51
52static struct usb_device_id bfusb_table[] = {
53 /* AVM BlueFRITZ! USB */
54 { USB_DEVICE(0x057c, 0x2200) },
55
56 { } /* Terminating entry */
57};
58
59MODULE_DEVICE_TABLE(usb, bfusb_table);
60
Linus Torvalds1da177e2005-04-16 15:20:36 -070061#define BFUSB_MAX_BLOCK_SIZE 256
62
63#define BFUSB_BLOCK_TIMEOUT 3000
64
65#define BFUSB_TX_PROCESS 1
66#define BFUSB_TX_WAKEUP 2
67
68#define BFUSB_MAX_BULK_TX 2
69#define BFUSB_MAX_BULK_RX 2
70
Marcel Holtmann9c724352006-07-06 15:45:23 +020071struct bfusb_data {
Linus Torvalds1da177e2005-04-16 15:20:36 -070072 struct hci_dev *hdev;
73
74 unsigned long state;
75
76 struct usb_device *udev;
77
78 unsigned int bulk_in_ep;
79 unsigned int bulk_out_ep;
80 unsigned int bulk_pkt_size;
81
82 rwlock_t lock;
83
84 struct sk_buff_head transmit_q;
85
86 struct sk_buff *reassembly;
87
88 atomic_t pending_tx;
89 struct sk_buff_head pending_q;
90 struct sk_buff_head completed_q;
91};
92
Marcel Holtmann9c724352006-07-06 15:45:23 +020093struct bfusb_data_scb {
Linus Torvalds1da177e2005-04-16 15:20:36 -070094 struct urb *urb;
95};
96
David Howells7d12e782006-10-05 14:55:46 +010097static void bfusb_tx_complete(struct urb *urb);
98static void bfusb_rx_complete(struct urb *urb);
Linus Torvalds1da177e2005-04-16 15:20:36 -070099
Marcel Holtmann9c724352006-07-06 15:45:23 +0200100static struct urb *bfusb_get_completed(struct bfusb_data *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101{
102 struct sk_buff *skb;
103 struct urb *urb = NULL;
104
Marcel Holtmann9c724352006-07-06 15:45:23 +0200105 BT_DBG("bfusb %p", data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106
Marcel Holtmann9c724352006-07-06 15:45:23 +0200107 skb = skb_dequeue(&data->completed_q);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108 if (skb) {
Marcel Holtmann9c724352006-07-06 15:45:23 +0200109 urb = ((struct bfusb_data_scb *) skb->cb)->urb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110 kfree_skb(skb);
111 }
112
113 return urb;
114}
115
Marcel Holtmann9c724352006-07-06 15:45:23 +0200116static void bfusb_unlink_urbs(struct bfusb_data *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117{
118 struct sk_buff *skb;
119 struct urb *urb;
120
Marcel Holtmann9c724352006-07-06 15:45:23 +0200121 BT_DBG("bfusb %p", data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122
Marcel Holtmann9c724352006-07-06 15:45:23 +0200123 while ((skb = skb_dequeue(&data->pending_q))) {
124 urb = ((struct bfusb_data_scb *) skb->cb)->urb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125 usb_kill_urb(urb);
Marcel Holtmann9c724352006-07-06 15:45:23 +0200126 skb_queue_tail(&data->completed_q, skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127 }
128
Marcel Holtmann9c724352006-07-06 15:45:23 +0200129 while ((urb = bfusb_get_completed(data)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130 usb_free_urb(urb);
131}
132
Marcel Holtmann9c724352006-07-06 15:45:23 +0200133static int bfusb_send_bulk(struct bfusb_data *data, struct sk_buff *skb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134{
Marcel Holtmann9c724352006-07-06 15:45:23 +0200135 struct bfusb_data_scb *scb = (void *) skb->cb;
136 struct urb *urb = bfusb_get_completed(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137 int err, pipe;
138
Marcel Holtmann9c724352006-07-06 15:45:23 +0200139 BT_DBG("bfusb %p skb %p len %d", data, skb, skb->len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140
141 if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC)))
142 return -ENOMEM;
143
Marcel Holtmann9c724352006-07-06 15:45:23 +0200144 pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145
Marcel Holtmann9c724352006-07-06 15:45:23 +0200146 usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, skb->len,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147 bfusb_tx_complete, skb);
148
149 scb->urb = urb;
150
Marcel Holtmann9c724352006-07-06 15:45:23 +0200151 skb_queue_tail(&data->pending_q, skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152
153 err = usb_submit_urb(urb, GFP_ATOMIC);
154 if (err) {
155 BT_ERR("%s bulk tx submit failed urb %p err %d",
Marcel Holtmann9c724352006-07-06 15:45:23 +0200156 data->hdev->name, urb, err);
157 skb_unlink(skb, &data->pending_q);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158 usb_free_urb(urb);
159 } else
Marcel Holtmann9c724352006-07-06 15:45:23 +0200160 atomic_inc(&data->pending_tx);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161
162 return err;
163}
164
Marcel Holtmann9c724352006-07-06 15:45:23 +0200165static void bfusb_tx_wakeup(struct bfusb_data *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166{
167 struct sk_buff *skb;
168
Marcel Holtmann9c724352006-07-06 15:45:23 +0200169 BT_DBG("bfusb %p", data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170
Marcel Holtmann9c724352006-07-06 15:45:23 +0200171 if (test_and_set_bit(BFUSB_TX_PROCESS, &data->state)) {
172 set_bit(BFUSB_TX_WAKEUP, &data->state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173 return;
174 }
175
176 do {
Marcel Holtmann9c724352006-07-06 15:45:23 +0200177 clear_bit(BFUSB_TX_WAKEUP, &data->state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178
Marcel Holtmann9c724352006-07-06 15:45:23 +0200179 while ((atomic_read(&data->pending_tx) < BFUSB_MAX_BULK_TX) &&
180 (skb = skb_dequeue(&data->transmit_q))) {
181 if (bfusb_send_bulk(data, skb) < 0) {
182 skb_queue_head(&data->transmit_q, skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183 break;
184 }
185 }
186
Marcel Holtmann9c724352006-07-06 15:45:23 +0200187 } while (test_bit(BFUSB_TX_WAKEUP, &data->state));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188
Marcel Holtmann9c724352006-07-06 15:45:23 +0200189 clear_bit(BFUSB_TX_PROCESS, &data->state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190}
191
David Howells7d12e782006-10-05 14:55:46 +0100192static void bfusb_tx_complete(struct urb *urb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193{
194 struct sk_buff *skb = (struct sk_buff *) urb->context;
Marcel Holtmann9c724352006-07-06 15:45:23 +0200195 struct bfusb_data *data = (struct bfusb_data *) skb->dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196
Marcel Holtmann9c724352006-07-06 15:45:23 +0200197 BT_DBG("bfusb %p urb %p skb %p len %d", data, urb, skb, skb->len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198
Marcel Holtmann9c724352006-07-06 15:45:23 +0200199 atomic_dec(&data->pending_tx);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200
Marcel Holtmann9c724352006-07-06 15:45:23 +0200201 if (!test_bit(HCI_RUNNING, &data->hdev->flags))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202 return;
203
204 if (!urb->status)
Marcel Holtmann9c724352006-07-06 15:45:23 +0200205 data->hdev->stat.byte_tx += skb->len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206 else
Marcel Holtmann9c724352006-07-06 15:45:23 +0200207 data->hdev->stat.err_tx++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208
Marcel Holtmann9c724352006-07-06 15:45:23 +0200209 read_lock(&data->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210
Marcel Holtmann9c724352006-07-06 15:45:23 +0200211 skb_unlink(skb, &data->pending_q);
212 skb_queue_tail(&data->completed_q, skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700213
Marcel Holtmann9c724352006-07-06 15:45:23 +0200214 bfusb_tx_wakeup(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215
Marcel Holtmann9c724352006-07-06 15:45:23 +0200216 read_unlock(&data->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217}
218
219
Marcel Holtmann9c724352006-07-06 15:45:23 +0200220static int bfusb_rx_submit(struct bfusb_data *data, struct urb *urb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221{
Marcel Holtmann9c724352006-07-06 15:45:23 +0200222 struct bfusb_data_scb *scb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223 struct sk_buff *skb;
224 int err, pipe, size = HCI_MAX_FRAME_SIZE + 32;
225
226 BT_DBG("bfusb %p urb %p", bfusb, urb);
227
228 if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC)))
229 return -ENOMEM;
230
Marcel Holtmann9c724352006-07-06 15:45:23 +0200231 skb = bt_skb_alloc(size, GFP_ATOMIC);
232 if (!skb) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233 usb_free_urb(urb);
234 return -ENOMEM;
235 }
236
Marcel Holtmann9c724352006-07-06 15:45:23 +0200237 skb->dev = (void *) data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238
Marcel Holtmann9c724352006-07-06 15:45:23 +0200239 scb = (struct bfusb_data_scb *) skb->cb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240 scb->urb = urb;
241
Marcel Holtmann9c724352006-07-06 15:45:23 +0200242 pipe = usb_rcvbulkpipe(data->udev, data->bulk_in_ep);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243
Marcel Holtmann9c724352006-07-06 15:45:23 +0200244 usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, size,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245 bfusb_rx_complete, skb);
246
Marcel Holtmann9c724352006-07-06 15:45:23 +0200247 skb_queue_tail(&data->pending_q, skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248
249 err = usb_submit_urb(urb, GFP_ATOMIC);
250 if (err) {
251 BT_ERR("%s bulk rx submit failed urb %p err %d",
Marcel Holtmann9c724352006-07-06 15:45:23 +0200252 data->hdev->name, urb, err);
253 skb_unlink(skb, &data->pending_q);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254 kfree_skb(skb);
255 usb_free_urb(urb);
256 }
257
258 return err;
259}
260
Marcel Holtmann9c724352006-07-06 15:45:23 +0200261static inline int bfusb_recv_block(struct bfusb_data *data, int hdr, unsigned char *buf, int len)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262{
Marcel Holtmann9c724352006-07-06 15:45:23 +0200263 BT_DBG("bfusb %p hdr 0x%02x data %p len %d", data, hdr, buf, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264
265 if (hdr & 0x10) {
Marcel Holtmann9c724352006-07-06 15:45:23 +0200266 BT_ERR("%s error in block", data->hdev->name);
267 if (data->reassembly)
268 kfree_skb(data->reassembly);
269 data->reassembly = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700270 return -EIO;
271 }
272
273 if (hdr & 0x04) {
274 struct sk_buff *skb;
275 unsigned char pkt_type;
276 int pkt_len = 0;
277
Marcel Holtmann9c724352006-07-06 15:45:23 +0200278 if (data->reassembly) {
279 BT_ERR("%s unexpected start block", data->hdev->name);
280 kfree_skb(data->reassembly);
281 data->reassembly = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282 }
283
284 if (len < 1) {
Marcel Holtmann9c724352006-07-06 15:45:23 +0200285 BT_ERR("%s no packet type found", data->hdev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286 return -EPROTO;
287 }
288
Marcel Holtmann9c724352006-07-06 15:45:23 +0200289 pkt_type = *buf++; len--;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290
291 switch (pkt_type) {
292 case HCI_EVENT_PKT:
293 if (len >= HCI_EVENT_HDR_SIZE) {
Marcel Holtmann9c724352006-07-06 15:45:23 +0200294 struct hci_event_hdr *hdr = (struct hci_event_hdr *) buf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295 pkt_len = HCI_EVENT_HDR_SIZE + hdr->plen;
296 } else {
Marcel Holtmann9c724352006-07-06 15:45:23 +0200297 BT_ERR("%s event block is too short", data->hdev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298 return -EILSEQ;
299 }
300 break;
301
302 case HCI_ACLDATA_PKT:
303 if (len >= HCI_ACL_HDR_SIZE) {
Marcel Holtmann9c724352006-07-06 15:45:23 +0200304 struct hci_acl_hdr *hdr = (struct hci_acl_hdr *) buf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305 pkt_len = HCI_ACL_HDR_SIZE + __le16_to_cpu(hdr->dlen);
306 } else {
Marcel Holtmann9c724352006-07-06 15:45:23 +0200307 BT_ERR("%s data block is too short", data->hdev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308 return -EILSEQ;
309 }
310 break;
311
312 case HCI_SCODATA_PKT:
313 if (len >= HCI_SCO_HDR_SIZE) {
Marcel Holtmann9c724352006-07-06 15:45:23 +0200314 struct hci_sco_hdr *hdr = (struct hci_sco_hdr *) buf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315 pkt_len = HCI_SCO_HDR_SIZE + hdr->dlen;
316 } else {
Marcel Holtmann9c724352006-07-06 15:45:23 +0200317 BT_ERR("%s audio block is too short", data->hdev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318 return -EILSEQ;
319 }
320 break;
321 }
322
323 skb = bt_skb_alloc(pkt_len, GFP_ATOMIC);
324 if (!skb) {
Marcel Holtmann9c724352006-07-06 15:45:23 +0200325 BT_ERR("%s no memory for the packet", data->hdev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326 return -ENOMEM;
327 }
328
Marcel Holtmann9c724352006-07-06 15:45:23 +0200329 skb->dev = (void *) data->hdev;
Marcel Holtmann0d48d932005-08-09 20:30:28 -0700330 bt_cb(skb)->pkt_type = pkt_type;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331
Marcel Holtmann9c724352006-07-06 15:45:23 +0200332 data->reassembly = skb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333 } else {
Marcel Holtmann9c724352006-07-06 15:45:23 +0200334 if (!data->reassembly) {
335 BT_ERR("%s unexpected continuation block", data->hdev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336 return -EIO;
337 }
338 }
339
340 if (len > 0)
Marcel Holtmann9c724352006-07-06 15:45:23 +0200341 memcpy(skb_put(data->reassembly, len), buf, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342
343 if (hdr & 0x08) {
Marcel Holtmann9c724352006-07-06 15:45:23 +0200344 hci_recv_frame(data->reassembly);
345 data->reassembly = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346 }
347
348 return 0;
349}
350
David Howells7d12e782006-10-05 14:55:46 +0100351static void bfusb_rx_complete(struct urb *urb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352{
353 struct sk_buff *skb = (struct sk_buff *) urb->context;
Marcel Holtmann9c724352006-07-06 15:45:23 +0200354 struct bfusb_data *data = (struct bfusb_data *) skb->dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355 unsigned char *buf = urb->transfer_buffer;
356 int count = urb->actual_length;
357 int err, hdr, len;
358
359 BT_DBG("bfusb %p urb %p skb %p len %d", bfusb, urb, skb, skb->len);
360
Marcel Holtmann9c724352006-07-06 15:45:23 +0200361 read_lock(&data->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362
Marcel Holtmann9c724352006-07-06 15:45:23 +0200363 if (!test_bit(HCI_RUNNING, &data->hdev->flags))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364 goto unlock;
365
366 if (urb->status || !count)
367 goto resubmit;
368
Marcel Holtmann9c724352006-07-06 15:45:23 +0200369 data->hdev->stat.byte_rx += count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370
371 skb_put(skb, count);
372
373 while (count) {
374 hdr = buf[0] | (buf[1] << 8);
375
376 if (hdr & 0x4000) {
377 len = 0;
378 count -= 2;
379 buf += 2;
380 } else {
381 len = (buf[2] == 0) ? 256 : buf[2];
382 count -= 3;
383 buf += 3;
384 }
385
386 if (count < len) {
387 BT_ERR("%s block extends over URB buffer ranges",
Marcel Holtmann9c724352006-07-06 15:45:23 +0200388 data->hdev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389 }
390
391 if ((hdr & 0xe1) == 0xc1)
Marcel Holtmann9c724352006-07-06 15:45:23 +0200392 bfusb_recv_block(data, hdr, buf, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393
394 count -= len;
395 buf += len;
396 }
397
Marcel Holtmann9c724352006-07-06 15:45:23 +0200398 skb_unlink(skb, &data->pending_q);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399 kfree_skb(skb);
400
Marcel Holtmann9c724352006-07-06 15:45:23 +0200401 bfusb_rx_submit(data, urb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402
Marcel Holtmann9c724352006-07-06 15:45:23 +0200403 read_unlock(&data->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404
405 return;
406
407resubmit:
Marcel Holtmann9c724352006-07-06 15:45:23 +0200408 urb->dev = data->udev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700409
410 err = usb_submit_urb(urb, GFP_ATOMIC);
411 if (err) {
412 BT_ERR("%s bulk resubmit failed urb %p err %d",
Marcel Holtmann9c724352006-07-06 15:45:23 +0200413 data->hdev->name, urb, err);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414 }
415
416unlock:
Marcel Holtmann9c724352006-07-06 15:45:23 +0200417 read_unlock(&data->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418}
419
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420static int bfusb_open(struct hci_dev *hdev)
421{
Marcel Holtmann9c724352006-07-06 15:45:23 +0200422 struct bfusb_data *data = hdev->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423 unsigned long flags;
424 int i, err;
425
Marcel Holtmann9c724352006-07-06 15:45:23 +0200426 BT_DBG("hdev %p bfusb %p", hdev, data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427
428 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
429 return 0;
430
Marcel Holtmann9c724352006-07-06 15:45:23 +0200431 write_lock_irqsave(&data->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432
Marcel Holtmann9c724352006-07-06 15:45:23 +0200433 err = bfusb_rx_submit(data, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434 if (!err) {
435 for (i = 1; i < BFUSB_MAX_BULK_RX; i++)
Marcel Holtmann9c724352006-07-06 15:45:23 +0200436 bfusb_rx_submit(data, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437 } else {
438 clear_bit(HCI_RUNNING, &hdev->flags);
439 }
440
Marcel Holtmann9c724352006-07-06 15:45:23 +0200441 write_unlock_irqrestore(&data->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442
443 return err;
444}
445
446static int bfusb_flush(struct hci_dev *hdev)
447{
Marcel Holtmann9c724352006-07-06 15:45:23 +0200448 struct bfusb_data *data = hdev->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449
Marcel Holtmann9c724352006-07-06 15:45:23 +0200450 BT_DBG("hdev %p bfusb %p", hdev, data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451
Marcel Holtmann9c724352006-07-06 15:45:23 +0200452 skb_queue_purge(&data->transmit_q);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453
454 return 0;
455}
456
457static int bfusb_close(struct hci_dev *hdev)
458{
Marcel Holtmann9c724352006-07-06 15:45:23 +0200459 struct bfusb_data *data = hdev->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460 unsigned long flags;
461
Marcel Holtmann9c724352006-07-06 15:45:23 +0200462 BT_DBG("hdev %p bfusb %p", hdev, data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463
464 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
465 return 0;
466
Marcel Holtmann9c724352006-07-06 15:45:23 +0200467 write_lock_irqsave(&data->lock, flags);
468 write_unlock_irqrestore(&data->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700469
Marcel Holtmann9c724352006-07-06 15:45:23 +0200470 bfusb_unlink_urbs(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471 bfusb_flush(hdev);
472
473 return 0;
474}
475
476static int bfusb_send_frame(struct sk_buff *skb)
477{
478 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
Marcel Holtmann9c724352006-07-06 15:45:23 +0200479 struct bfusb_data *data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700480 struct sk_buff *nskb;
481 unsigned char buf[3];
482 int sent = 0, size, count;
483
Marcel Holtmann0d48d932005-08-09 20:30:28 -0700484 BT_DBG("hdev %p skb %p type %d len %d", hdev, skb, bt_cb(skb)->pkt_type, skb->len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700485
486 if (!hdev) {
487 BT_ERR("Frame for unknown HCI device (hdev=NULL)");
488 return -ENODEV;
489 }
490
491 if (!test_bit(HCI_RUNNING, &hdev->flags))
492 return -EBUSY;
493
Marcel Holtmann9c724352006-07-06 15:45:23 +0200494 data = hdev->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495
Marcel Holtmann0d48d932005-08-09 20:30:28 -0700496 switch (bt_cb(skb)->pkt_type) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497 case HCI_COMMAND_PKT:
498 hdev->stat.cmd_tx++;
499 break;
500 case HCI_ACLDATA_PKT:
501 hdev->stat.acl_tx++;
502 break;
503 case HCI_SCODATA_PKT:
504 hdev->stat.sco_tx++;
505 break;
506 };
507
508 /* Prepend skb with frame type */
Marcel Holtmann0d48d932005-08-09 20:30:28 -0700509 memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700510
511 count = skb->len;
512
513 /* Max HCI frame size seems to be 1511 + 1 */
Marcel Holtmann9c724352006-07-06 15:45:23 +0200514 nskb = bt_skb_alloc(count + 32, GFP_ATOMIC);
515 if (!nskb) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516 BT_ERR("Can't allocate memory for new packet");
517 return -ENOMEM;
518 }
519
Marcel Holtmann9c724352006-07-06 15:45:23 +0200520 nskb->dev = (void *) data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700521
522 while (count) {
523 size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE);
524
525 buf[0] = 0xc1 | ((sent == 0) ? 0x04 : 0) | ((count == size) ? 0x08 : 0);
526 buf[1] = 0x00;
527 buf[2] = (size == BFUSB_MAX_BLOCK_SIZE) ? 0 : size;
528
529 memcpy(skb_put(nskb, 3), buf, 3);
530 memcpy(skb_put(nskb, size), skb->data + sent, size);
531
532 sent += size;
533 count -= size;
534 }
535
536 /* Don't send frame with multiple size of bulk max packet */
Marcel Holtmann9c724352006-07-06 15:45:23 +0200537 if ((nskb->len % data->bulk_pkt_size) == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700538 buf[0] = 0xdd;
539 buf[1] = 0x00;
540 memcpy(skb_put(nskb, 2), buf, 2);
541 }
542
Marcel Holtmann9c724352006-07-06 15:45:23 +0200543 read_lock(&data->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700544
Marcel Holtmann9c724352006-07-06 15:45:23 +0200545 skb_queue_tail(&data->transmit_q, nskb);
546 bfusb_tx_wakeup(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700547
Marcel Holtmann9c724352006-07-06 15:45:23 +0200548 read_unlock(&data->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700549
550 kfree_skb(skb);
551
552 return 0;
553}
554
555static void bfusb_destruct(struct hci_dev *hdev)
556{
Marcel Holtmann9c724352006-07-06 15:45:23 +0200557 struct bfusb_data *data = hdev->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700558
Marcel Holtmann9c724352006-07-06 15:45:23 +0200559 BT_DBG("hdev %p bfusb %p", hdev, data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700560
Marcel Holtmann9c724352006-07-06 15:45:23 +0200561 kfree(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700562}
563
564static int bfusb_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
565{
566 return -ENOIOCTLCMD;
567}
568
Marcel Holtmann9c724352006-07-06 15:45:23 +0200569static int bfusb_load_firmware(struct bfusb_data *data, unsigned char *firmware, int count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700570{
571 unsigned char *buf;
572 int err, pipe, len, size, sent = 0;
573
Marcel Holtmann9c724352006-07-06 15:45:23 +0200574 BT_DBG("bfusb %p udev %p", data, data->udev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700575
576 BT_INFO("BlueFRITZ! USB loading firmware");
577
Marcel Holtmann9c724352006-07-06 15:45:23 +0200578 pipe = usb_sndctrlpipe(data->udev, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579
Marcel Holtmann9c724352006-07-06 15:45:23 +0200580 if (usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700581 0, 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT) < 0) {
582 BT_ERR("Can't change to loading configuration");
583 return -EBUSY;
584 }
585
Marcel Holtmann9c724352006-07-06 15:45:23 +0200586 data->udev->toggle[0] = data->udev->toggle[1] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700587
588 buf = kmalloc(BFUSB_MAX_BLOCK_SIZE + 3, GFP_ATOMIC);
589 if (!buf) {
590 BT_ERR("Can't allocate memory chunk for firmware");
591 return -ENOMEM;
592 }
593
Marcel Holtmann9c724352006-07-06 15:45:23 +0200594 pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700595
596 while (count) {
597 size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE + 3);
598
599 memcpy(buf, firmware + sent, size);
600
Marcel Holtmann9c724352006-07-06 15:45:23 +0200601 err = usb_bulk_msg(data->udev, pipe, buf, size,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700602 &len, BFUSB_BLOCK_TIMEOUT);
603
604 if (err || (len != size)) {
605 BT_ERR("Error in firmware loading");
606 goto error;
607 }
608
609 sent += size;
610 count -= size;
611 }
612
Marcel Holtmann9c724352006-07-06 15:45:23 +0200613 err = usb_bulk_msg(data->udev, pipe, NULL, 0,
614 &len, BFUSB_BLOCK_TIMEOUT);
615 if (err < 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700616 BT_ERR("Error in null packet request");
617 goto error;
618 }
619
Marcel Holtmann9c724352006-07-06 15:45:23 +0200620 pipe = usb_sndctrlpipe(data->udev, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621
Marcel Holtmann9c724352006-07-06 15:45:23 +0200622 err = usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
623 0, 2, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
624 if (err < 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700625 BT_ERR("Can't change to running configuration");
626 goto error;
627 }
628
Marcel Holtmann9c724352006-07-06 15:45:23 +0200629 data->udev->toggle[0] = data->udev->toggle[1] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700630
631 BT_INFO("BlueFRITZ! USB device ready");
632
633 kfree(buf);
634 return 0;
635
636error:
637 kfree(buf);
638
Marcel Holtmann9c724352006-07-06 15:45:23 +0200639 pipe = usb_sndctrlpipe(data->udev, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700640
Marcel Holtmann9c724352006-07-06 15:45:23 +0200641 usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700642 0, 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
643
644 return err;
645}
646
647static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *id)
648{
649 const struct firmware *firmware;
650 struct usb_device *udev = interface_to_usbdev(intf);
651 struct usb_host_endpoint *bulk_out_ep;
652 struct usb_host_endpoint *bulk_in_ep;
653 struct hci_dev *hdev;
Marcel Holtmann9c724352006-07-06 15:45:23 +0200654 struct bfusb_data *data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700655
656 BT_DBG("intf %p id %p", intf, id);
657
658 if (ignore)
659 return -ENODEV;
660
661 /* Check number of endpoints */
662 if (intf->cur_altsetting->desc.bNumEndpoints < 2)
663 return -EIO;
664
665 bulk_out_ep = &intf->cur_altsetting->endpoint[0];
666 bulk_in_ep = &intf->cur_altsetting->endpoint[1];
667
668 if (!bulk_out_ep || !bulk_in_ep) {
669 BT_ERR("Bulk endpoints not found");
670 goto done;
671 }
672
673 /* Initialize control structure and load firmware */
Marcel Holtmann9c724352006-07-06 15:45:23 +0200674 data = kzalloc(sizeof(struct bfusb_data), GFP_KERNEL);
675 if (!data) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700676 BT_ERR("Can't allocate memory for control structure");
677 goto done;
678 }
679
Marcel Holtmann9c724352006-07-06 15:45:23 +0200680 data->udev = udev;
681 data->bulk_in_ep = bulk_in_ep->desc.bEndpointAddress;
682 data->bulk_out_ep = bulk_out_ep->desc.bEndpointAddress;
683 data->bulk_pkt_size = le16_to_cpu(bulk_out_ep->desc.wMaxPacketSize);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700684
Marcel Holtmann9c724352006-07-06 15:45:23 +0200685 rwlock_init(&data->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700686
Marcel Holtmann9c724352006-07-06 15:45:23 +0200687 data->reassembly = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700688
Marcel Holtmann9c724352006-07-06 15:45:23 +0200689 skb_queue_head_init(&data->transmit_q);
690 skb_queue_head_init(&data->pending_q);
691 skb_queue_head_init(&data->completed_q);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700692
693 if (request_firmware(&firmware, "bfubase.frm", &udev->dev) < 0) {
694 BT_ERR("Firmware request failed");
695 goto error;
696 }
697
698 BT_DBG("firmware data %p size %d", firmware->data, firmware->size);
699
Marcel Holtmann9c724352006-07-06 15:45:23 +0200700 if (bfusb_load_firmware(data, firmware->data, firmware->size) < 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700701 BT_ERR("Firmware loading failed");
702 goto release;
703 }
704
705 release_firmware(firmware);
706
707 /* Initialize and register HCI device */
708 hdev = hci_alloc_dev();
709 if (!hdev) {
710 BT_ERR("Can't allocate HCI device");
711 goto error;
712 }
713
Marcel Holtmann9c724352006-07-06 15:45:23 +0200714 data->hdev = hdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700715
716 hdev->type = HCI_USB;
Marcel Holtmann9c724352006-07-06 15:45:23 +0200717 hdev->driver_data = data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700718 SET_HCIDEV_DEV(hdev, &intf->dev);
719
720 hdev->open = bfusb_open;
721 hdev->close = bfusb_close;
722 hdev->flush = bfusb_flush;
723 hdev->send = bfusb_send_frame;
724 hdev->destruct = bfusb_destruct;
725 hdev->ioctl = bfusb_ioctl;
726
727 hdev->owner = THIS_MODULE;
728
729 if (hci_register_dev(hdev) < 0) {
730 BT_ERR("Can't register HCI device");
731 hci_free_dev(hdev);
732 goto error;
733 }
734
Marcel Holtmann9c724352006-07-06 15:45:23 +0200735 usb_set_intfdata(intf, data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700736
737 return 0;
738
739release:
740 release_firmware(firmware);
741
742error:
Marcel Holtmann9c724352006-07-06 15:45:23 +0200743 kfree(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700744
745done:
746 return -EIO;
747}
748
749static void bfusb_disconnect(struct usb_interface *intf)
750{
Marcel Holtmann9c724352006-07-06 15:45:23 +0200751 struct bfusb_data *data = usb_get_intfdata(intf);
752 struct hci_dev *hdev = data->hdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700753
754 BT_DBG("intf %p", intf);
755
756 if (!hdev)
757 return;
758
759 usb_set_intfdata(intf, NULL);
760
761 bfusb_close(hdev);
762
763 if (hci_unregister_dev(hdev) < 0)
764 BT_ERR("Can't unregister HCI device %s", hdev->name);
765
766 hci_free_dev(hdev);
767}
768
769static struct usb_driver bfusb_driver = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700770 .name = "bfusb",
771 .probe = bfusb_probe,
772 .disconnect = bfusb_disconnect,
773 .id_table = bfusb_table,
774};
775
776static int __init bfusb_init(void)
777{
778 int err;
779
780 BT_INFO("BlueFRITZ! USB driver ver %s", VERSION);
781
Marcel Holtmann9c724352006-07-06 15:45:23 +0200782 err = usb_register(&bfusb_driver);
783 if (err < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700784 BT_ERR("Failed to register BlueFRITZ! USB driver");
785
786 return err;
787}
788
789static void __exit bfusb_exit(void)
790{
791 usb_deregister(&bfusb_driver);
792}
793
794module_init(bfusb_init);
795module_exit(bfusb_exit);
796
797module_param(ignore, bool, 0644);
798MODULE_PARM_DESC(ignore, "Ignore devices from the matching table");
799
800MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
801MODULE_DESCRIPTION("BlueFRITZ! USB driver ver " VERSION);
802MODULE_VERSION(VERSION);
803MODULE_LICENSE("GPL");
Marcel Holtmann23121192007-02-17 23:59:02 +0100804MODULE_FIRMWARE("bfubase.frm");