blob: a5c4d0584389713522652c472cfd5c7b5e75dbab [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
Marcel Holtmann943d56b2008-08-07 22:26:55 +020041#define VERSION "1.2"
Linus Torvalds1da177e2005-04-16 15:20:36 -070042
43static struct usb_driver bfusb_driver;
44
Marcel Holtmann9712d592013-10-11 07:46:19 -070045static const struct usb_device_id bfusb_table[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070046 /* AVM BlueFRITZ! USB */
47 { USB_DEVICE(0x057c, 0x2200) },
48
49 { } /* Terminating entry */
50};
51
52MODULE_DEVICE_TABLE(usb, bfusb_table);
53
Linus Torvalds1da177e2005-04-16 15:20:36 -070054#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
Marcel Holtmann9c724352006-07-06 15:45:23 +020064struct bfusb_data {
Linus Torvalds1da177e2005-04-16 15:20:36 -070065 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
Marcel Holtmann9c724352006-07-06 15:45:23 +020086struct bfusb_data_scb {
Linus Torvalds1da177e2005-04-16 15:20:36 -070087 struct urb *urb;
88};
89
David Howells7d12e782006-10-05 14:55:46 +010090static void bfusb_tx_complete(struct urb *urb);
91static void bfusb_rx_complete(struct urb *urb);
Linus Torvalds1da177e2005-04-16 15:20:36 -070092
Marcel Holtmann9c724352006-07-06 15:45:23 +020093static struct urb *bfusb_get_completed(struct bfusb_data *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -070094{
95 struct sk_buff *skb;
96 struct urb *urb = NULL;
97
Marcel Holtmann9c724352006-07-06 15:45:23 +020098 BT_DBG("bfusb %p", data);
Linus Torvalds1da177e2005-04-16 15:20:36 -070099
Marcel Holtmann9c724352006-07-06 15:45:23 +0200100 skb = skb_dequeue(&data->completed_q);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101 if (skb) {
Marcel Holtmann9c724352006-07-06 15:45:23 +0200102 urb = ((struct bfusb_data_scb *) skb->cb)->urb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103 kfree_skb(skb);
104 }
105
106 return urb;
107}
108
Marcel Holtmann9c724352006-07-06 15:45:23 +0200109static void bfusb_unlink_urbs(struct bfusb_data *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110{
111 struct sk_buff *skb;
112 struct urb *urb;
113
Marcel Holtmann9c724352006-07-06 15:45:23 +0200114 BT_DBG("bfusb %p", data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115
Marcel Holtmann9c724352006-07-06 15:45:23 +0200116 while ((skb = skb_dequeue(&data->pending_q))) {
117 urb = ((struct bfusb_data_scb *) skb->cb)->urb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118 usb_kill_urb(urb);
Marcel Holtmann9c724352006-07-06 15:45:23 +0200119 skb_queue_tail(&data->completed_q, skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120 }
121
Marcel Holtmann9c724352006-07-06 15:45:23 +0200122 while ((urb = bfusb_get_completed(data)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123 usb_free_urb(urb);
124}
125
Marcel Holtmann9c724352006-07-06 15:45:23 +0200126static int bfusb_send_bulk(struct bfusb_data *data, struct sk_buff *skb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127{
Marcel Holtmann9c724352006-07-06 15:45:23 +0200128 struct bfusb_data_scb *scb = (void *) skb->cb;
129 struct urb *urb = bfusb_get_completed(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130 int err, pipe;
131
Marcel Holtmann9c724352006-07-06 15:45:23 +0200132 BT_DBG("bfusb %p skb %p len %d", data, skb, skb->len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133
Valentin Iliea08b15e2013-08-12 18:46:00 +0300134 if (!urb) {
135 urb = usb_alloc_urb(0, GFP_ATOMIC);
136 if (!urb)
137 return -ENOMEM;
138 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139
Marcel Holtmann9c724352006-07-06 15:45:23 +0200140 pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141
Marcel Holtmann9c724352006-07-06 15:45:23 +0200142 usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, skb->len,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143 bfusb_tx_complete, skb);
144
145 scb->urb = urb;
146
Marcel Holtmann9c724352006-07-06 15:45:23 +0200147 skb_queue_tail(&data->pending_q, skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148
149 err = usb_submit_urb(urb, GFP_ATOMIC);
150 if (err) {
151 BT_ERR("%s bulk tx submit failed urb %p err %d",
Marcel Holtmann9c724352006-07-06 15:45:23 +0200152 data->hdev->name, urb, err);
153 skb_unlink(skb, &data->pending_q);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154 usb_free_urb(urb);
155 } else
Marcel Holtmann9c724352006-07-06 15:45:23 +0200156 atomic_inc(&data->pending_tx);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700157
158 return err;
159}
160
Marcel Holtmann9c724352006-07-06 15:45:23 +0200161static void bfusb_tx_wakeup(struct bfusb_data *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162{
163 struct sk_buff *skb;
164
Marcel Holtmann9c724352006-07-06 15:45:23 +0200165 BT_DBG("bfusb %p", data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166
Marcel Holtmann9c724352006-07-06 15:45:23 +0200167 if (test_and_set_bit(BFUSB_TX_PROCESS, &data->state)) {
168 set_bit(BFUSB_TX_WAKEUP, &data->state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169 return;
170 }
171
172 do {
Marcel Holtmann9c724352006-07-06 15:45:23 +0200173 clear_bit(BFUSB_TX_WAKEUP, &data->state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174
Marcel Holtmann9c724352006-07-06 15:45:23 +0200175 while ((atomic_read(&data->pending_tx) < BFUSB_MAX_BULK_TX) &&
176 (skb = skb_dequeue(&data->transmit_q))) {
177 if (bfusb_send_bulk(data, skb) < 0) {
178 skb_queue_head(&data->transmit_q, skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179 break;
180 }
181 }
182
Marcel Holtmann9c724352006-07-06 15:45:23 +0200183 } while (test_bit(BFUSB_TX_WAKEUP, &data->state));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184
Marcel Holtmann9c724352006-07-06 15:45:23 +0200185 clear_bit(BFUSB_TX_PROCESS, &data->state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186}
187
David Howells7d12e782006-10-05 14:55:46 +0100188static void bfusb_tx_complete(struct urb *urb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189{
190 struct sk_buff *skb = (struct sk_buff *) urb->context;
Marcel Holtmann9c724352006-07-06 15:45:23 +0200191 struct bfusb_data *data = (struct bfusb_data *) skb->dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192
Marcel Holtmann9c724352006-07-06 15:45:23 +0200193 BT_DBG("bfusb %p urb %p skb %p len %d", data, urb, skb, skb->len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194
Marcel Holtmann9c724352006-07-06 15:45:23 +0200195 atomic_dec(&data->pending_tx);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196
Marcel Holtmann9c724352006-07-06 15:45:23 +0200197 if (!test_bit(HCI_RUNNING, &data->hdev->flags))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198 return;
199
200 if (!urb->status)
Marcel Holtmann9c724352006-07-06 15:45:23 +0200201 data->hdev->stat.byte_tx += skb->len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202 else
Marcel Holtmann9c724352006-07-06 15:45:23 +0200203 data->hdev->stat.err_tx++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204
Marcel Holtmann9c724352006-07-06 15:45:23 +0200205 read_lock(&data->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206
Marcel Holtmann9c724352006-07-06 15:45:23 +0200207 skb_unlink(skb, &data->pending_q);
208 skb_queue_tail(&data->completed_q, skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209
Marcel Holtmann9c724352006-07-06 15:45:23 +0200210 bfusb_tx_wakeup(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211
Marcel Holtmann9c724352006-07-06 15:45:23 +0200212 read_unlock(&data->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700213}
214
215
Marcel Holtmann9c724352006-07-06 15:45:23 +0200216static int bfusb_rx_submit(struct bfusb_data *data, struct urb *urb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217{
Marcel Holtmann9c724352006-07-06 15:45:23 +0200218 struct bfusb_data_scb *scb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219 struct sk_buff *skb;
220 int err, pipe, size = HCI_MAX_FRAME_SIZE + 32;
221
Marcel Holtmanna418b892008-11-30 12:17:28 +0100222 BT_DBG("bfusb %p urb %p", data, urb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223
Valentin Iliea08b15e2013-08-12 18:46:00 +0300224 if (!urb) {
225 urb = usb_alloc_urb(0, GFP_ATOMIC);
226 if (!urb)
227 return -ENOMEM;
228 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229
Marcel Holtmann9c724352006-07-06 15:45:23 +0200230 skb = bt_skb_alloc(size, GFP_ATOMIC);
231 if (!skb) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232 usb_free_urb(urb);
233 return -ENOMEM;
234 }
235
Marcel Holtmann9c724352006-07-06 15:45:23 +0200236 skb->dev = (void *) data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237
Marcel Holtmann9c724352006-07-06 15:45:23 +0200238 scb = (struct bfusb_data_scb *) skb->cb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700239 scb->urb = urb;
240
Marcel Holtmann9c724352006-07-06 15:45:23 +0200241 pipe = usb_rcvbulkpipe(data->udev, data->bulk_in_ep);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242
Marcel Holtmann9c724352006-07-06 15:45:23 +0200243 usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, size,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244 bfusb_rx_complete, skb);
245
Marcel Holtmann9c724352006-07-06 15:45:23 +0200246 skb_queue_tail(&data->pending_q, skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247
248 err = usb_submit_urb(urb, GFP_ATOMIC);
249 if (err) {
250 BT_ERR("%s bulk rx submit failed urb %p err %d",
Marcel Holtmann9c724352006-07-06 15:45:23 +0200251 data->hdev->name, urb, err);
252 skb_unlink(skb, &data->pending_q);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700253 kfree_skb(skb);
254 usb_free_urb(urb);
255 }
256
257 return err;
258}
259
Marcel Holtmann9c724352006-07-06 15:45:23 +0200260static inline int bfusb_recv_block(struct bfusb_data *data, int hdr, unsigned char *buf, int len)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261{
Marcel Holtmann9c724352006-07-06 15:45:23 +0200262 BT_DBG("bfusb %p hdr 0x%02x data %p len %d", data, hdr, buf, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700263
264 if (hdr & 0x10) {
Marcel Holtmann9c724352006-07-06 15:45:23 +0200265 BT_ERR("%s error in block", data->hdev->name);
Wei Yongjunb1fb0682009-02-25 18:09:33 +0800266 kfree_skb(data->reassembly);
Marcel Holtmann9c724352006-07-06 15:45:23 +0200267 data->reassembly = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268 return -EIO;
269 }
270
271 if (hdr & 0x04) {
272 struct sk_buff *skb;
273 unsigned char pkt_type;
274 int pkt_len = 0;
275
Marcel Holtmann9c724352006-07-06 15:45:23 +0200276 if (data->reassembly) {
277 BT_ERR("%s unexpected start block", data->hdev->name);
278 kfree_skb(data->reassembly);
279 data->reassembly = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280 }
281
282 if (len < 1) {
Marcel Holtmann9c724352006-07-06 15:45:23 +0200283 BT_ERR("%s no packet type found", data->hdev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284 return -EPROTO;
285 }
286
Marcel Holtmann9c724352006-07-06 15:45:23 +0200287 pkt_type = *buf++; len--;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288
289 switch (pkt_type) {
290 case HCI_EVENT_PKT:
291 if (len >= HCI_EVENT_HDR_SIZE) {
Marcel Holtmann9c724352006-07-06 15:45:23 +0200292 struct hci_event_hdr *hdr = (struct hci_event_hdr *) buf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293 pkt_len = HCI_EVENT_HDR_SIZE + hdr->plen;
294 } else {
Marcel Holtmann9c724352006-07-06 15:45:23 +0200295 BT_ERR("%s event block is too short", data->hdev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296 return -EILSEQ;
297 }
298 break;
299
300 case HCI_ACLDATA_PKT:
301 if (len >= HCI_ACL_HDR_SIZE) {
Marcel Holtmann9c724352006-07-06 15:45:23 +0200302 struct hci_acl_hdr *hdr = (struct hci_acl_hdr *) buf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303 pkt_len = HCI_ACL_HDR_SIZE + __le16_to_cpu(hdr->dlen);
304 } else {
Marcel Holtmann9c724352006-07-06 15:45:23 +0200305 BT_ERR("%s data block is too short", data->hdev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306 return -EILSEQ;
307 }
308 break;
309
310 case HCI_SCODATA_PKT:
311 if (len >= HCI_SCO_HDR_SIZE) {
Marcel Holtmann9c724352006-07-06 15:45:23 +0200312 struct hci_sco_hdr *hdr = (struct hci_sco_hdr *) buf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313 pkt_len = HCI_SCO_HDR_SIZE + hdr->dlen;
314 } else {
Marcel Holtmann9c724352006-07-06 15:45:23 +0200315 BT_ERR("%s audio block is too short", data->hdev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316 return -EILSEQ;
317 }
318 break;
319 }
320
321 skb = bt_skb_alloc(pkt_len, GFP_ATOMIC);
322 if (!skb) {
Marcel Holtmann9c724352006-07-06 15:45:23 +0200323 BT_ERR("%s no memory for the packet", data->hdev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324 return -ENOMEM;
325 }
326
Marcel Holtmann0d48d932005-08-09 20:30:28 -0700327 bt_cb(skb)->pkt_type = pkt_type;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328
Marcel Holtmann9c724352006-07-06 15:45:23 +0200329 data->reassembly = skb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330 } else {
Marcel Holtmann9c724352006-07-06 15:45:23 +0200331 if (!data->reassembly) {
332 BT_ERR("%s unexpected continuation block", data->hdev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333 return -EIO;
334 }
335 }
336
337 if (len > 0)
Marcel Holtmann9c724352006-07-06 15:45:23 +0200338 memcpy(skb_put(data->reassembly, len), buf, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339
340 if (hdr & 0x08) {
Marcel Holtmanne1a26172013-10-10 16:52:43 -0700341 hci_recv_frame(data->hdev, data->reassembly);
Marcel Holtmann9c724352006-07-06 15:45:23 +0200342 data->reassembly = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343 }
344
345 return 0;
346}
347
David Howells7d12e782006-10-05 14:55:46 +0100348static void bfusb_rx_complete(struct urb *urb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349{
350 struct sk_buff *skb = (struct sk_buff *) urb->context;
Marcel Holtmann9c724352006-07-06 15:45:23 +0200351 struct bfusb_data *data = (struct bfusb_data *) skb->dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352 unsigned char *buf = urb->transfer_buffer;
353 int count = urb->actual_length;
354 int err, hdr, len;
355
Marcel Holtmanna418b892008-11-30 12:17:28 +0100356 BT_DBG("bfusb %p urb %p skb %p len %d", data, urb, skb, skb->len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357
Marcel Holtmann9c724352006-07-06 15:45:23 +0200358 read_lock(&data->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359
Marcel Holtmann9c724352006-07-06 15:45:23 +0200360 if (!test_bit(HCI_RUNNING, &data->hdev->flags))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361 goto unlock;
362
363 if (urb->status || !count)
364 goto resubmit;
365
Marcel Holtmann9c724352006-07-06 15:45:23 +0200366 data->hdev->stat.byte_rx += count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367
368 skb_put(skb, count);
369
370 while (count) {
371 hdr = buf[0] | (buf[1] << 8);
372
373 if (hdr & 0x4000) {
374 len = 0;
375 count -= 2;
376 buf += 2;
377 } else {
378 len = (buf[2] == 0) ? 256 : buf[2];
379 count -= 3;
380 buf += 3;
381 }
382
383 if (count < len) {
384 BT_ERR("%s block extends over URB buffer ranges",
Marcel Holtmann9c724352006-07-06 15:45:23 +0200385 data->hdev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386 }
387
388 if ((hdr & 0xe1) == 0xc1)
Marcel Holtmann9c724352006-07-06 15:45:23 +0200389 bfusb_recv_block(data, hdr, buf, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700390
391 count -= len;
392 buf += len;
393 }
394
Marcel Holtmann9c724352006-07-06 15:45:23 +0200395 skb_unlink(skb, &data->pending_q);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700396 kfree_skb(skb);
397
Marcel Holtmann9c724352006-07-06 15:45:23 +0200398 bfusb_rx_submit(data, urb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399
Marcel Holtmann9c724352006-07-06 15:45:23 +0200400 read_unlock(&data->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401
402 return;
403
404resubmit:
Marcel Holtmann9c724352006-07-06 15:45:23 +0200405 urb->dev = data->udev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406
407 err = usb_submit_urb(urb, GFP_ATOMIC);
408 if (err) {
409 BT_ERR("%s bulk resubmit failed urb %p err %d",
Marcel Holtmann9c724352006-07-06 15:45:23 +0200410 data->hdev->name, urb, err);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411 }
412
413unlock:
Marcel Holtmann9c724352006-07-06 15:45:23 +0200414 read_unlock(&data->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700415}
416
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417static int bfusb_open(struct hci_dev *hdev)
418{
David Herrmann155961e2012-02-09 21:58:32 +0100419 struct bfusb_data *data = hci_get_drvdata(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420 unsigned long flags;
421 int i, err;
422
Marcel Holtmann9c724352006-07-06 15:45:23 +0200423 BT_DBG("hdev %p bfusb %p", hdev, data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424
425 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
426 return 0;
427
Marcel Holtmann9c724352006-07-06 15:45:23 +0200428 write_lock_irqsave(&data->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700429
Marcel Holtmann9c724352006-07-06 15:45:23 +0200430 err = bfusb_rx_submit(data, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431 if (!err) {
432 for (i = 1; i < BFUSB_MAX_BULK_RX; i++)
Marcel Holtmann9c724352006-07-06 15:45:23 +0200433 bfusb_rx_submit(data, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434 } else {
435 clear_bit(HCI_RUNNING, &hdev->flags);
436 }
437
Marcel Holtmann9c724352006-07-06 15:45:23 +0200438 write_unlock_irqrestore(&data->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439
440 return err;
441}
442
443static int bfusb_flush(struct hci_dev *hdev)
444{
David Herrmann155961e2012-02-09 21:58:32 +0100445 struct bfusb_data *data = hci_get_drvdata(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700446
Marcel Holtmann9c724352006-07-06 15:45:23 +0200447 BT_DBG("hdev %p bfusb %p", hdev, data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448
Marcel Holtmann9c724352006-07-06 15:45:23 +0200449 skb_queue_purge(&data->transmit_q);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450
451 return 0;
452}
453
454static int bfusb_close(struct hci_dev *hdev)
455{
David Herrmann155961e2012-02-09 21:58:32 +0100456 struct bfusb_data *data = hci_get_drvdata(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700457 unsigned long flags;
458
Marcel Holtmann9c724352006-07-06 15:45:23 +0200459 BT_DBG("hdev %p bfusb %p", hdev, data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460
461 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
462 return 0;
463
Marcel Holtmann9c724352006-07-06 15:45:23 +0200464 write_lock_irqsave(&data->lock, flags);
465 write_unlock_irqrestore(&data->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466
Marcel Holtmann9c724352006-07-06 15:45:23 +0200467 bfusb_unlink_urbs(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700468 bfusb_flush(hdev);
469
470 return 0;
471}
472
Marcel Holtmann7bd8f092013-10-11 06:19:18 -0700473static int bfusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474{
Marcel Holtmannaae26272013-10-11 07:00:57 -0700475 struct bfusb_data *data = hci_get_drvdata(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700476 struct sk_buff *nskb;
477 unsigned char buf[3];
478 int sent = 0, size, count;
479
Marcel Holtmann0d48d932005-08-09 20:30:28 -0700480 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 -0700481
Linus Torvalds1da177e2005-04-16 15:20:36 -0700482 if (!test_bit(HCI_RUNNING, &hdev->flags))
483 return -EBUSY;
484
Marcel Holtmann0d48d932005-08-09 20:30:28 -0700485 switch (bt_cb(skb)->pkt_type) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486 case HCI_COMMAND_PKT:
487 hdev->stat.cmd_tx++;
488 break;
489 case HCI_ACLDATA_PKT:
490 hdev->stat.acl_tx++;
491 break;
492 case HCI_SCODATA_PKT:
493 hdev->stat.sco_tx++;
494 break;
Prasanna Karthika03e33da2015-07-05 09:49:27 +0000495 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496
497 /* Prepend skb with frame type */
Marcel Holtmann0d48d932005-08-09 20:30:28 -0700498 memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700499
500 count = skb->len;
501
502 /* Max HCI frame size seems to be 1511 + 1 */
Marcel Holtmann9c724352006-07-06 15:45:23 +0200503 nskb = bt_skb_alloc(count + 32, GFP_ATOMIC);
504 if (!nskb) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505 BT_ERR("Can't allocate memory for new packet");
506 return -ENOMEM;
507 }
508
Marcel Holtmann9c724352006-07-06 15:45:23 +0200509 nskb->dev = (void *) data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700510
511 while (count) {
512 size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE);
513
514 buf[0] = 0xc1 | ((sent == 0) ? 0x04 : 0) | ((count == size) ? 0x08 : 0);
515 buf[1] = 0x00;
516 buf[2] = (size == BFUSB_MAX_BLOCK_SIZE) ? 0 : size;
517
518 memcpy(skb_put(nskb, 3), buf, 3);
Arnaldo Carvalho de Melod626f622007-03-27 18:55:52 -0300519 skb_copy_from_linear_data_offset(skb, sent, skb_put(nskb, size), size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700520
521 sent += size;
522 count -= size;
523 }
524
525 /* Don't send frame with multiple size of bulk max packet */
Marcel Holtmann9c724352006-07-06 15:45:23 +0200526 if ((nskb->len % data->bulk_pkt_size) == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700527 buf[0] = 0xdd;
528 buf[1] = 0x00;
529 memcpy(skb_put(nskb, 2), buf, 2);
530 }
531
Marcel Holtmann9c724352006-07-06 15:45:23 +0200532 read_lock(&data->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700533
Marcel Holtmann9c724352006-07-06 15:45:23 +0200534 skb_queue_tail(&data->transmit_q, nskb);
535 bfusb_tx_wakeup(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536
Marcel Holtmann9c724352006-07-06 15:45:23 +0200537 read_unlock(&data->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700538
539 kfree_skb(skb);
540
541 return 0;
542}
543
David Woodhouse8187b4f2008-05-23 23:56:51 +0100544static int bfusb_load_firmware(struct bfusb_data *data,
545 const unsigned char *firmware, int count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700546{
547 unsigned char *buf;
548 int err, pipe, len, size, sent = 0;
549
Marcel Holtmann9c724352006-07-06 15:45:23 +0200550 BT_DBG("bfusb %p udev %p", data, data->udev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700551
552 BT_INFO("BlueFRITZ! USB loading firmware");
553
David Herrmann7f103a02011-10-26 11:22:46 +0200554 buf = kmalloc(BFUSB_MAX_BLOCK_SIZE + 3, GFP_KERNEL);
555 if (!buf) {
556 BT_ERR("Can't allocate memory chunk for firmware");
557 return -ENOMEM;
558 }
559
Marcel Holtmann9c724352006-07-06 15:45:23 +0200560 pipe = usb_sndctrlpipe(data->udev, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700561
Marcel Holtmann9c724352006-07-06 15:45:23 +0200562 if (usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700563 0, 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT) < 0) {
564 BT_ERR("Can't change to loading configuration");
David Herrmann7f103a02011-10-26 11:22:46 +0200565 kfree(buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700566 return -EBUSY;
567 }
568
Marcel Holtmann9c724352006-07-06 15:45:23 +0200569 data->udev->toggle[0] = data->udev->toggle[1] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700570
Marcel Holtmann9c724352006-07-06 15:45:23 +0200571 pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572
573 while (count) {
574 size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE + 3);
575
576 memcpy(buf, firmware + sent, size);
577
Marcel Holtmann9c724352006-07-06 15:45:23 +0200578 err = usb_bulk_msg(data->udev, pipe, buf, size,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579 &len, BFUSB_BLOCK_TIMEOUT);
580
581 if (err || (len != size)) {
582 BT_ERR("Error in firmware loading");
583 goto error;
584 }
585
586 sent += size;
587 count -= size;
588 }
589
Marcel Holtmann9c724352006-07-06 15:45:23 +0200590 err = usb_bulk_msg(data->udev, pipe, NULL, 0,
591 &len, BFUSB_BLOCK_TIMEOUT);
592 if (err < 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700593 BT_ERR("Error in null packet request");
594 goto error;
595 }
596
Marcel Holtmann9c724352006-07-06 15:45:23 +0200597 pipe = usb_sndctrlpipe(data->udev, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700598
Marcel Holtmann9c724352006-07-06 15:45:23 +0200599 err = usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
600 0, 2, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
601 if (err < 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700602 BT_ERR("Can't change to running configuration");
603 goto error;
604 }
605
Marcel Holtmann9c724352006-07-06 15:45:23 +0200606 data->udev->toggle[0] = data->udev->toggle[1] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700607
608 BT_INFO("BlueFRITZ! USB device ready");
609
610 kfree(buf);
611 return 0;
612
613error:
614 kfree(buf);
615
Marcel Holtmann9c724352006-07-06 15:45:23 +0200616 pipe = usb_sndctrlpipe(data->udev, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700617
Marcel Holtmann9c724352006-07-06 15:45:23 +0200618 usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700619 0, 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
620
621 return err;
622}
623
624static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *id)
625{
626 const struct firmware *firmware;
627 struct usb_device *udev = interface_to_usbdev(intf);
628 struct usb_host_endpoint *bulk_out_ep;
629 struct usb_host_endpoint *bulk_in_ep;
630 struct hci_dev *hdev;
Marcel Holtmann9c724352006-07-06 15:45:23 +0200631 struct bfusb_data *data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700632
633 BT_DBG("intf %p id %p", intf, id);
634
Linus Torvalds1da177e2005-04-16 15:20:36 -0700635 /* Check number of endpoints */
636 if (intf->cur_altsetting->desc.bNumEndpoints < 2)
637 return -EIO;
638
639 bulk_out_ep = &intf->cur_altsetting->endpoint[0];
640 bulk_in_ep = &intf->cur_altsetting->endpoint[1];
641
642 if (!bulk_out_ep || !bulk_in_ep) {
643 BT_ERR("Bulk endpoints not found");
644 goto done;
645 }
646
647 /* Initialize control structure and load firmware */
Sachin Kamat0213cd82012-07-27 12:38:32 +0530648 data = devm_kzalloc(&intf->dev, sizeof(struct bfusb_data), GFP_KERNEL);
Marcel Holtmann9c724352006-07-06 15:45:23 +0200649 if (!data) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700650 BT_ERR("Can't allocate memory for control structure");
651 goto done;
652 }
653
Marcel Holtmann9c724352006-07-06 15:45:23 +0200654 data->udev = udev;
655 data->bulk_in_ep = bulk_in_ep->desc.bEndpointAddress;
656 data->bulk_out_ep = bulk_out_ep->desc.bEndpointAddress;
657 data->bulk_pkt_size = le16_to_cpu(bulk_out_ep->desc.wMaxPacketSize);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700658
Marcel Holtmann9c724352006-07-06 15:45:23 +0200659 rwlock_init(&data->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660
Marcel Holtmann9c724352006-07-06 15:45:23 +0200661 data->reassembly = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662
Marcel Holtmann9c724352006-07-06 15:45:23 +0200663 skb_queue_head_init(&data->transmit_q);
664 skb_queue_head_init(&data->pending_q);
665 skb_queue_head_init(&data->completed_q);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700666
667 if (request_firmware(&firmware, "bfubase.frm", &udev->dev) < 0) {
668 BT_ERR("Firmware request failed");
Sachin Kamat0213cd82012-07-27 12:38:32 +0530669 goto done;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700670 }
671
Marcel Holtmanna418b892008-11-30 12:17:28 +0100672 BT_DBG("firmware data %p size %zu", firmware->data, firmware->size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700673
Marcel Holtmann9c724352006-07-06 15:45:23 +0200674 if (bfusb_load_firmware(data, firmware->data, firmware->size) < 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700675 BT_ERR("Firmware loading failed");
676 goto release;
677 }
678
679 release_firmware(firmware);
680
681 /* Initialize and register HCI device */
682 hdev = hci_alloc_dev();
683 if (!hdev) {
684 BT_ERR("Can't allocate HCI device");
Sachin Kamat0213cd82012-07-27 12:38:32 +0530685 goto done;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700686 }
687
Marcel Holtmann9c724352006-07-06 15:45:23 +0200688 data->hdev = hdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700689
Marcel Holtmannc13854c2010-02-08 15:27:07 +0100690 hdev->bus = HCI_USB;
David Herrmann155961e2012-02-09 21:58:32 +0100691 hci_set_drvdata(hdev, data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700692 SET_HCIDEV_DEV(hdev, &intf->dev);
693
Marcel Holtmann19cf55a2013-10-10 10:50:00 -0700694 hdev->open = bfusb_open;
695 hdev->close = bfusb_close;
696 hdev->flush = bfusb_flush;
697 hdev->send = bfusb_send_frame;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700698
Marcel Holtmann9ef80d402014-12-26 04:42:32 +0100699 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
700
Linus Torvalds1da177e2005-04-16 15:20:36 -0700701 if (hci_register_dev(hdev) < 0) {
702 BT_ERR("Can't register HCI device");
703 hci_free_dev(hdev);
Sachin Kamat0213cd82012-07-27 12:38:32 +0530704 goto done;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700705 }
706
Marcel Holtmann9c724352006-07-06 15:45:23 +0200707 usb_set_intfdata(intf, data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700708
709 return 0;
710
711release:
712 release_firmware(firmware);
713
Linus Torvalds1da177e2005-04-16 15:20:36 -0700714done:
715 return -EIO;
716}
717
718static void bfusb_disconnect(struct usb_interface *intf)
719{
Marcel Holtmann9c724352006-07-06 15:45:23 +0200720 struct bfusb_data *data = usb_get_intfdata(intf);
721 struct hci_dev *hdev = data->hdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700722
723 BT_DBG("intf %p", intf);
724
725 if (!hdev)
726 return;
727
728 usb_set_intfdata(intf, NULL);
729
730 bfusb_close(hdev);
731
David Herrmann13ea4012011-10-26 10:43:18 +0200732 hci_unregister_dev(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700733 hci_free_dev(hdev);
734}
735
736static struct usb_driver bfusb_driver = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700737 .name = "bfusb",
738 .probe = bfusb_probe,
739 .disconnect = bfusb_disconnect,
740 .id_table = bfusb_table,
Sarah Sharpe1f12eb2012-04-23 10:08:51 -0700741 .disable_hub_initiated_lpm = 1,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700742};
743
Greg Kroah-Hartman93f15082011-11-18 09:47:34 -0800744module_usb_driver(bfusb_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700745
Linus Torvalds1da177e2005-04-16 15:20:36 -0700746MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
747MODULE_DESCRIPTION("BlueFRITZ! USB driver ver " VERSION);
748MODULE_VERSION(VERSION);
749MODULE_LICENSE("GPL");
Marcel Holtmann23121192007-02-17 23:59:02 +0100750MODULE_FIRMWARE("bfubase.frm");