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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 *
4 * Digianswer Bluetooth USB driver
5 *
6 * Copyright (C) 2004-2007 Marcel Holtmann <marcel@holtmann.org>
7 */
8
9#include <linux/kernel.h>
10#include <linux/module.h>
11#include <linux/init.h>
12#include <linux/slab.h>
13#include <linux/types.h>
14#include <linux/sched.h>
15#include <linux/errno.h>
16#include <linux/skbuff.h>
17
18#include <linux/usb.h>
19
20#include <net/bluetooth/bluetooth.h>
21#include <net/bluetooth/hci_core.h>
22
23#include "h4_recv.h"
24
25#define VERSION "0.11"
26
27static const struct usb_device_id bpa10x_table[] = {
28 /* Tektronix BPA 100/105 (Digianswer) */
29 { USB_DEVICE(0x08fd, 0x0002) },
30
31 { } /* Terminating entry */
32};
33
34MODULE_DEVICE_TABLE(usb, bpa10x_table);
35
36struct bpa10x_data {
37 struct hci_dev *hdev;
38 struct usb_device *udev;
39
40 struct usb_anchor tx_anchor;
41 struct usb_anchor rx_anchor;
42
43 struct sk_buff *rx_skb[2];
44};
45
46static void bpa10x_tx_complete(struct urb *urb)
47{
48 struct sk_buff *skb = urb->context;
49 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
50
51 BT_DBG("%s urb %p status %d count %d", hdev->name,
52 urb, urb->status, urb->actual_length);
53
54 if (!test_bit(HCI_RUNNING, &hdev->flags))
55 goto done;
56
57 if (!urb->status)
58 hdev->stat.byte_tx += urb->transfer_buffer_length;
59 else
60 hdev->stat.err_tx++;
61
62done:
63 kfree(urb->setup_packet);
64
65 kfree_skb(skb);
66}
67
68#define HCI_VENDOR_HDR_SIZE 5
69
70#define HCI_RECV_VENDOR \
71 .type = HCI_VENDOR_PKT, \
72 .hlen = HCI_VENDOR_HDR_SIZE, \
73 .loff = 3, \
74 .lsize = 2, \
75 .maxlen = HCI_MAX_FRAME_SIZE
76
77static const struct h4_recv_pkt bpa10x_recv_pkts[] = {
78 { H4_RECV_ACL, .recv = hci_recv_frame },
79 { H4_RECV_SCO, .recv = hci_recv_frame },
80 { H4_RECV_EVENT, .recv = hci_recv_frame },
81 { HCI_RECV_VENDOR, .recv = hci_recv_diag },
82};
83
84static void bpa10x_rx_complete(struct urb *urb)
85{
86 struct hci_dev *hdev = urb->context;
87 struct bpa10x_data *data = hci_get_drvdata(hdev);
88 int err;
89
90 BT_DBG("%s urb %p status %d count %d", hdev->name,
91 urb, urb->status, urb->actual_length);
92
93 if (!test_bit(HCI_RUNNING, &hdev->flags))
94 return;
95
96 if (urb->status == 0) {
97 bool idx = usb_pipebulk(urb->pipe);
98
99 data->rx_skb[idx] = h4_recv_buf(hdev, data->rx_skb[idx],
100 urb->transfer_buffer,
101 urb->actual_length,
102 bpa10x_recv_pkts,
103 ARRAY_SIZE(bpa10x_recv_pkts));
104 if (IS_ERR(data->rx_skb[idx])) {
105 bt_dev_err(hdev, "corrupted event packet");
106 hdev->stat.err_rx++;
107 data->rx_skb[idx] = NULL;
108 }
109 }
110
111 usb_anchor_urb(urb, &data->rx_anchor);
112
113 err = usb_submit_urb(urb, GFP_ATOMIC);
114 if (err < 0) {
115 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", urb, -err);
116 usb_unanchor_urb(urb);
117 }
118}
119
120static inline int bpa10x_submit_intr_urb(struct hci_dev *hdev)
121{
122 struct bpa10x_data *data = hci_get_drvdata(hdev);
123 struct urb *urb;
124 unsigned char *buf;
125 unsigned int pipe;
126 int err, size = 16;
127
128 BT_DBG("%s", hdev->name);
129
130 urb = usb_alloc_urb(0, GFP_KERNEL);
131 if (!urb)
132 return -ENOMEM;
133
134 buf = kmalloc(size, GFP_KERNEL);
135 if (!buf) {
136 usb_free_urb(urb);
137 return -ENOMEM;
138 }
139
140 pipe = usb_rcvintpipe(data->udev, 0x81);
141
142 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
143 bpa10x_rx_complete, hdev, 1);
144
145 urb->transfer_flags |= URB_FREE_BUFFER;
146
147 usb_anchor_urb(urb, &data->rx_anchor);
148
149 err = usb_submit_urb(urb, GFP_KERNEL);
150 if (err < 0) {
151 bt_dev_err(hdev, "urb %p submission failed (%d)", urb, -err);
152 usb_unanchor_urb(urb);
153 }
154
155 usb_free_urb(urb);
156
157 return err;
158}
159
160static inline int bpa10x_submit_bulk_urb(struct hci_dev *hdev)
161{
162 struct bpa10x_data *data = hci_get_drvdata(hdev);
163 struct urb *urb;
164 unsigned char *buf;
165 unsigned int pipe;
166 int err, size = 64;
167
168 BT_DBG("%s", hdev->name);
169
170 urb = usb_alloc_urb(0, GFP_KERNEL);
171 if (!urb)
172 return -ENOMEM;
173
174 buf = kmalloc(size, GFP_KERNEL);
175 if (!buf) {
176 usb_free_urb(urb);
177 return -ENOMEM;
178 }
179
180 pipe = usb_rcvbulkpipe(data->udev, 0x82);
181
182 usb_fill_bulk_urb(urb, data->udev, pipe,
183 buf, size, bpa10x_rx_complete, hdev);
184
185 urb->transfer_flags |= URB_FREE_BUFFER;
186
187 usb_anchor_urb(urb, &data->rx_anchor);
188
189 err = usb_submit_urb(urb, GFP_KERNEL);
190 if (err < 0) {
191 bt_dev_err(hdev, "urb %p submission failed (%d)", urb, -err);
192 usb_unanchor_urb(urb);
193 }
194
195 usb_free_urb(urb);
196
197 return err;
198}
199
200static int bpa10x_open(struct hci_dev *hdev)
201{
202 struct bpa10x_data *data = hci_get_drvdata(hdev);
203 int err;
204
205 BT_DBG("%s", hdev->name);
206
207 err = bpa10x_submit_intr_urb(hdev);
208 if (err < 0)
209 goto error;
210
211 err = bpa10x_submit_bulk_urb(hdev);
212 if (err < 0)
213 goto error;
214
215 return 0;
216
217error:
218 usb_kill_anchored_urbs(&data->rx_anchor);
219
220 return err;
221}
222
223static int bpa10x_close(struct hci_dev *hdev)
224{
225 struct bpa10x_data *data = hci_get_drvdata(hdev);
226
227 BT_DBG("%s", hdev->name);
228
229 usb_kill_anchored_urbs(&data->rx_anchor);
230
231 return 0;
232}
233
234static int bpa10x_flush(struct hci_dev *hdev)
235{
236 struct bpa10x_data *data = hci_get_drvdata(hdev);
237
238 BT_DBG("%s", hdev->name);
239
240 usb_kill_anchored_urbs(&data->tx_anchor);
241
242 return 0;
243}
244
245static int bpa10x_setup(struct hci_dev *hdev)
246{
247 static const u8 req[] = { 0x07 };
248 struct sk_buff *skb;
249
250 BT_DBG("%s", hdev->name);
251
252 /* Read revision string */
253 skb = __hci_cmd_sync(hdev, 0xfc0e, sizeof(req), req, HCI_INIT_TIMEOUT);
254 if (IS_ERR(skb))
255 return PTR_ERR(skb);
256
257 bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
258
259 hci_set_fw_info(hdev, "%s", skb->data + 1);
260
261 kfree_skb(skb);
262 return 0;
263}
264
265static int bpa10x_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
266{
267 struct bpa10x_data *data = hci_get_drvdata(hdev);
268 struct usb_ctrlrequest *dr;
269 struct urb *urb;
270 unsigned int pipe;
271 int err;
272
273 BT_DBG("%s", hdev->name);
274
275 skb->dev = (void *) hdev;
276
277 urb = usb_alloc_urb(0, GFP_KERNEL);
278 if (!urb)
279 return -ENOMEM;
280
281 /* Prepend skb with frame type */
282 *(u8 *)skb_push(skb, 1) = hci_skb_pkt_type(skb);
283
284 switch (hci_skb_pkt_type(skb)) {
285 case HCI_COMMAND_PKT:
286 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
287 if (!dr) {
288 usb_free_urb(urb);
289 return -ENOMEM;
290 }
291
292 dr->bRequestType = USB_TYPE_VENDOR;
293 dr->bRequest = 0;
294 dr->wIndex = 0;
295 dr->wValue = 0;
296 dr->wLength = __cpu_to_le16(skb->len);
297
298 pipe = usb_sndctrlpipe(data->udev, 0x00);
299
300 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
301 skb->data, skb->len, bpa10x_tx_complete, skb);
302
303 hdev->stat.cmd_tx++;
304 break;
305
306 case HCI_ACLDATA_PKT:
307 pipe = usb_sndbulkpipe(data->udev, 0x02);
308
309 usb_fill_bulk_urb(urb, data->udev, pipe,
310 skb->data, skb->len, bpa10x_tx_complete, skb);
311
312 hdev->stat.acl_tx++;
313 break;
314
315 case HCI_SCODATA_PKT:
316 pipe = usb_sndbulkpipe(data->udev, 0x02);
317
318 usb_fill_bulk_urb(urb, data->udev, pipe,
319 skb->data, skb->len, bpa10x_tx_complete, skb);
320
321 hdev->stat.sco_tx++;
322 break;
323
324 default:
325 usb_free_urb(urb);
326 return -EILSEQ;
327 }
328
329 usb_anchor_urb(urb, &data->tx_anchor);
330
331 err = usb_submit_urb(urb, GFP_KERNEL);
332 if (err < 0) {
333 bt_dev_err(hdev, "urb %p submission failed", urb);
334 kfree(urb->setup_packet);
335 usb_unanchor_urb(urb);
336 }
337
338 usb_free_urb(urb);
339
340 return err;
341}
342
343static int bpa10x_set_diag(struct hci_dev *hdev, bool enable)
344{
345 const u8 req[] = { 0x00, enable };
346 struct sk_buff *skb;
347
348 BT_DBG("%s", hdev->name);
349
350 if (!test_bit(HCI_RUNNING, &hdev->flags))
351 return -ENETDOWN;
352
353 /* Enable sniffer operation */
354 skb = __hci_cmd_sync(hdev, 0xfc0e, sizeof(req), req, HCI_INIT_TIMEOUT);
355 if (IS_ERR(skb))
356 return PTR_ERR(skb);
357
358 kfree_skb(skb);
359 return 0;
360}
361
362static int bpa10x_probe(struct usb_interface *intf,
363 const struct usb_device_id *id)
364{
365 struct bpa10x_data *data;
366 struct hci_dev *hdev;
367 int err;
368
369 BT_DBG("intf %p id %p", intf, id);
370
371 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
372 return -ENODEV;
373
374 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
375 if (!data)
376 return -ENOMEM;
377
378 data->udev = interface_to_usbdev(intf);
379
380 init_usb_anchor(&data->tx_anchor);
381 init_usb_anchor(&data->rx_anchor);
382
383 hdev = hci_alloc_dev();
384 if (!hdev)
385 return -ENOMEM;
386
387 hdev->bus = HCI_USB;
388 hci_set_drvdata(hdev, data);
389
390 data->hdev = hdev;
391
392 SET_HCIDEV_DEV(hdev, &intf->dev);
393
394 hdev->open = bpa10x_open;
395 hdev->close = bpa10x_close;
396 hdev->flush = bpa10x_flush;
397 hdev->setup = bpa10x_setup;
398 hdev->send = bpa10x_send_frame;
399 hdev->set_diag = bpa10x_set_diag;
400
401 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
402
403 err = hci_register_dev(hdev);
404 if (err < 0) {
405 hci_free_dev(hdev);
406 return err;
407 }
408
409 usb_set_intfdata(intf, data);
410
411 return 0;
412}
413
414static void bpa10x_disconnect(struct usb_interface *intf)
415{
416 struct bpa10x_data *data = usb_get_intfdata(intf);
417
418 BT_DBG("intf %p", intf);
419
420 if (!data)
421 return;
422
423 usb_set_intfdata(intf, NULL);
424
425 hci_unregister_dev(data->hdev);
426
427 hci_free_dev(data->hdev);
428 kfree_skb(data->rx_skb[0]);
429 kfree_skb(data->rx_skb[1]);
430}
431
432static struct usb_driver bpa10x_driver = {
433 .name = "bpa10x",
434 .probe = bpa10x_probe,
435 .disconnect = bpa10x_disconnect,
436 .id_table = bpa10x_table,
437 .disable_hub_initiated_lpm = 1,
438};
439
440module_usb_driver(bpa10x_driver);
441
442MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
443MODULE_DESCRIPTION("Digianswer Bluetooth USB driver ver " VERSION);
444MODULE_VERSION(VERSION);
445MODULE_LICENSE("GPL");
1/*
2 *
3 * Digianswer Bluetooth USB driver
4 *
5 * Copyright (C) 2004-2007 Marcel Holtmann <marcel@holtmann.org>
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
24#include <linux/kernel.h>
25#include <linux/module.h>
26#include <linux/init.h>
27#include <linux/slab.h>
28#include <linux/types.h>
29#include <linux/sched.h>
30#include <linux/errno.h>
31#include <linux/skbuff.h>
32
33#include <linux/usb.h>
34
35#include <net/bluetooth/bluetooth.h>
36#include <net/bluetooth/hci_core.h>
37
38#define VERSION "0.10"
39
40static const struct usb_device_id bpa10x_table[] = {
41 /* Tektronix BPA 100/105 (Digianswer) */
42 { USB_DEVICE(0x08fd, 0x0002) },
43
44 { } /* Terminating entry */
45};
46
47MODULE_DEVICE_TABLE(usb, bpa10x_table);
48
49struct bpa10x_data {
50 struct hci_dev *hdev;
51 struct usb_device *udev;
52
53 struct usb_anchor tx_anchor;
54 struct usb_anchor rx_anchor;
55
56 struct sk_buff *rx_skb[2];
57};
58
59#define HCI_VENDOR_HDR_SIZE 5
60
61struct hci_vendor_hdr {
62 __u8 type;
63 __le16 snum;
64 __le16 dlen;
65} __packed;
66
67static int bpa10x_recv(struct hci_dev *hdev, int queue, void *buf, int count)
68{
69 struct bpa10x_data *data = hci_get_drvdata(hdev);
70
71 BT_DBG("%s queue %d buffer %p count %d", hdev->name,
72 queue, buf, count);
73
74 if (queue < 0 || queue > 1)
75 return -EILSEQ;
76
77 hdev->stat.byte_rx += count;
78
79 while (count) {
80 struct sk_buff *skb = data->rx_skb[queue];
81 struct { __u8 type; int expect; } *scb;
82 int type, len = 0;
83
84 if (!skb) {
85 /* Start of the frame */
86
87 type = *((__u8 *) buf);
88 count--; buf++;
89
90 switch (type) {
91 case HCI_EVENT_PKT:
92 if (count >= HCI_EVENT_HDR_SIZE) {
93 struct hci_event_hdr *h = buf;
94 len = HCI_EVENT_HDR_SIZE + h->plen;
95 } else
96 return -EILSEQ;
97 break;
98
99 case HCI_ACLDATA_PKT:
100 if (count >= HCI_ACL_HDR_SIZE) {
101 struct hci_acl_hdr *h = buf;
102 len = HCI_ACL_HDR_SIZE +
103 __le16_to_cpu(h->dlen);
104 } else
105 return -EILSEQ;
106 break;
107
108 case HCI_SCODATA_PKT:
109 if (count >= HCI_SCO_HDR_SIZE) {
110 struct hci_sco_hdr *h = buf;
111 len = HCI_SCO_HDR_SIZE + h->dlen;
112 } else
113 return -EILSEQ;
114 break;
115
116 case HCI_VENDOR_PKT:
117 if (count >= HCI_VENDOR_HDR_SIZE) {
118 struct hci_vendor_hdr *h = buf;
119 len = HCI_VENDOR_HDR_SIZE +
120 __le16_to_cpu(h->dlen);
121 } else
122 return -EILSEQ;
123 break;
124 }
125
126 skb = bt_skb_alloc(len, GFP_ATOMIC);
127 if (!skb) {
128 BT_ERR("%s no memory for packet", hdev->name);
129 return -ENOMEM;
130 }
131
132 data->rx_skb[queue] = skb;
133
134 scb = (void *) skb->cb;
135 scb->type = type;
136 scb->expect = len;
137 } else {
138 /* Continuation */
139
140 scb = (void *) skb->cb;
141 len = scb->expect;
142 }
143
144 len = min(len, count);
145
146 memcpy(skb_put(skb, len), buf, len);
147
148 scb->expect -= len;
149
150 if (scb->expect == 0) {
151 /* Complete frame */
152
153 data->rx_skb[queue] = NULL;
154
155 bt_cb(skb)->pkt_type = scb->type;
156 hci_recv_frame(hdev, skb);
157 }
158
159 count -= len; buf += len;
160 }
161
162 return 0;
163}
164
165static void bpa10x_tx_complete(struct urb *urb)
166{
167 struct sk_buff *skb = urb->context;
168 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
169
170 BT_DBG("%s urb %p status %d count %d", hdev->name,
171 urb, urb->status, urb->actual_length);
172
173 if (!test_bit(HCI_RUNNING, &hdev->flags))
174 goto done;
175
176 if (!urb->status)
177 hdev->stat.byte_tx += urb->transfer_buffer_length;
178 else
179 hdev->stat.err_tx++;
180
181done:
182 kfree(urb->setup_packet);
183
184 kfree_skb(skb);
185}
186
187static void bpa10x_rx_complete(struct urb *urb)
188{
189 struct hci_dev *hdev = urb->context;
190 struct bpa10x_data *data = hci_get_drvdata(hdev);
191 int err;
192
193 BT_DBG("%s urb %p status %d count %d", hdev->name,
194 urb, urb->status, urb->actual_length);
195
196 if (!test_bit(HCI_RUNNING, &hdev->flags))
197 return;
198
199 if (urb->status == 0) {
200 if (bpa10x_recv(hdev, usb_pipebulk(urb->pipe),
201 urb->transfer_buffer,
202 urb->actual_length) < 0) {
203 BT_ERR("%s corrupted event packet", hdev->name);
204 hdev->stat.err_rx++;
205 }
206 }
207
208 usb_anchor_urb(urb, &data->rx_anchor);
209
210 err = usb_submit_urb(urb, GFP_ATOMIC);
211 if (err < 0) {
212 BT_ERR("%s urb %p failed to resubmit (%d)",
213 hdev->name, urb, -err);
214 usb_unanchor_urb(urb);
215 }
216}
217
218static inline int bpa10x_submit_intr_urb(struct hci_dev *hdev)
219{
220 struct bpa10x_data *data = hci_get_drvdata(hdev);
221 struct urb *urb;
222 unsigned char *buf;
223 unsigned int pipe;
224 int err, size = 16;
225
226 BT_DBG("%s", hdev->name);
227
228 urb = usb_alloc_urb(0, GFP_KERNEL);
229 if (!urb)
230 return -ENOMEM;
231
232 buf = kmalloc(size, GFP_KERNEL);
233 if (!buf) {
234 usb_free_urb(urb);
235 return -ENOMEM;
236 }
237
238 pipe = usb_rcvintpipe(data->udev, 0x81);
239
240 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
241 bpa10x_rx_complete, hdev, 1);
242
243 urb->transfer_flags |= URB_FREE_BUFFER;
244
245 usb_anchor_urb(urb, &data->rx_anchor);
246
247 err = usb_submit_urb(urb, GFP_KERNEL);
248 if (err < 0) {
249 BT_ERR("%s urb %p submission failed (%d)",
250 hdev->name, urb, -err);
251 usb_unanchor_urb(urb);
252 }
253
254 usb_free_urb(urb);
255
256 return err;
257}
258
259static inline int bpa10x_submit_bulk_urb(struct hci_dev *hdev)
260{
261 struct bpa10x_data *data = hci_get_drvdata(hdev);
262 struct urb *urb;
263 unsigned char *buf;
264 unsigned int pipe;
265 int err, size = 64;
266
267 BT_DBG("%s", hdev->name);
268
269 urb = usb_alloc_urb(0, GFP_KERNEL);
270 if (!urb)
271 return -ENOMEM;
272
273 buf = kmalloc(size, GFP_KERNEL);
274 if (!buf) {
275 usb_free_urb(urb);
276 return -ENOMEM;
277 }
278
279 pipe = usb_rcvbulkpipe(data->udev, 0x82);
280
281 usb_fill_bulk_urb(urb, data->udev, pipe,
282 buf, size, bpa10x_rx_complete, hdev);
283
284 urb->transfer_flags |= URB_FREE_BUFFER;
285
286 usb_anchor_urb(urb, &data->rx_anchor);
287
288 err = usb_submit_urb(urb, GFP_KERNEL);
289 if (err < 0) {
290 BT_ERR("%s urb %p submission failed (%d)",
291 hdev->name, urb, -err);
292 usb_unanchor_urb(urb);
293 }
294
295 usb_free_urb(urb);
296
297 return err;
298}
299
300static int bpa10x_open(struct hci_dev *hdev)
301{
302 struct bpa10x_data *data = hci_get_drvdata(hdev);
303 int err;
304
305 BT_DBG("%s", hdev->name);
306
307 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
308 return 0;
309
310 err = bpa10x_submit_intr_urb(hdev);
311 if (err < 0)
312 goto error;
313
314 err = bpa10x_submit_bulk_urb(hdev);
315 if (err < 0)
316 goto error;
317
318 return 0;
319
320error:
321 usb_kill_anchored_urbs(&data->rx_anchor);
322
323 clear_bit(HCI_RUNNING, &hdev->flags);
324
325 return err;
326}
327
328static int bpa10x_close(struct hci_dev *hdev)
329{
330 struct bpa10x_data *data = hci_get_drvdata(hdev);
331
332 BT_DBG("%s", hdev->name);
333
334 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
335 return 0;
336
337 usb_kill_anchored_urbs(&data->rx_anchor);
338
339 return 0;
340}
341
342static int bpa10x_flush(struct hci_dev *hdev)
343{
344 struct bpa10x_data *data = hci_get_drvdata(hdev);
345
346 BT_DBG("%s", hdev->name);
347
348 usb_kill_anchored_urbs(&data->tx_anchor);
349
350 return 0;
351}
352
353static int bpa10x_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
354{
355 struct bpa10x_data *data = hci_get_drvdata(hdev);
356 struct usb_ctrlrequest *dr;
357 struct urb *urb;
358 unsigned int pipe;
359 int err;
360
361 BT_DBG("%s", hdev->name);
362
363 if (!test_bit(HCI_RUNNING, &hdev->flags))
364 return -EBUSY;
365
366 skb->dev = (void *) hdev;
367
368 urb = usb_alloc_urb(0, GFP_ATOMIC);
369 if (!urb)
370 return -ENOMEM;
371
372 /* Prepend skb with frame type */
373 *skb_push(skb, 1) = bt_cb(skb)->pkt_type;
374
375 switch (bt_cb(skb)->pkt_type) {
376 case HCI_COMMAND_PKT:
377 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
378 if (!dr) {
379 usb_free_urb(urb);
380 return -ENOMEM;
381 }
382
383 dr->bRequestType = USB_TYPE_VENDOR;
384 dr->bRequest = 0;
385 dr->wIndex = 0;
386 dr->wValue = 0;
387 dr->wLength = __cpu_to_le16(skb->len);
388
389 pipe = usb_sndctrlpipe(data->udev, 0x00);
390
391 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
392 skb->data, skb->len, bpa10x_tx_complete, skb);
393
394 hdev->stat.cmd_tx++;
395 break;
396
397 case HCI_ACLDATA_PKT:
398 pipe = usb_sndbulkpipe(data->udev, 0x02);
399
400 usb_fill_bulk_urb(urb, data->udev, pipe,
401 skb->data, skb->len, bpa10x_tx_complete, skb);
402
403 hdev->stat.acl_tx++;
404 break;
405
406 case HCI_SCODATA_PKT:
407 pipe = usb_sndbulkpipe(data->udev, 0x02);
408
409 usb_fill_bulk_urb(urb, data->udev, pipe,
410 skb->data, skb->len, bpa10x_tx_complete, skb);
411
412 hdev->stat.sco_tx++;
413 break;
414
415 default:
416 usb_free_urb(urb);
417 return -EILSEQ;
418 }
419
420 usb_anchor_urb(urb, &data->tx_anchor);
421
422 err = usb_submit_urb(urb, GFP_ATOMIC);
423 if (err < 0) {
424 BT_ERR("%s urb %p submission failed", hdev->name, urb);
425 kfree(urb->setup_packet);
426 usb_unanchor_urb(urb);
427 }
428
429 usb_free_urb(urb);
430
431 return 0;
432}
433
434static int bpa10x_probe(struct usb_interface *intf, const struct usb_device_id *id)
435{
436 struct bpa10x_data *data;
437 struct hci_dev *hdev;
438 int err;
439
440 BT_DBG("intf %p id %p", intf, id);
441
442 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
443 return -ENODEV;
444
445 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
446 if (!data)
447 return -ENOMEM;
448
449 data->udev = interface_to_usbdev(intf);
450
451 init_usb_anchor(&data->tx_anchor);
452 init_usb_anchor(&data->rx_anchor);
453
454 hdev = hci_alloc_dev();
455 if (!hdev)
456 return -ENOMEM;
457
458 hdev->bus = HCI_USB;
459 hci_set_drvdata(hdev, data);
460
461 data->hdev = hdev;
462
463 SET_HCIDEV_DEV(hdev, &intf->dev);
464
465 hdev->open = bpa10x_open;
466 hdev->close = bpa10x_close;
467 hdev->flush = bpa10x_flush;
468 hdev->send = bpa10x_send_frame;
469
470 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
471
472 err = hci_register_dev(hdev);
473 if (err < 0) {
474 hci_free_dev(hdev);
475 return err;
476 }
477
478 usb_set_intfdata(intf, data);
479
480 return 0;
481}
482
483static void bpa10x_disconnect(struct usb_interface *intf)
484{
485 struct bpa10x_data *data = usb_get_intfdata(intf);
486
487 BT_DBG("intf %p", intf);
488
489 if (!data)
490 return;
491
492 usb_set_intfdata(intf, NULL);
493
494 hci_unregister_dev(data->hdev);
495
496 hci_free_dev(data->hdev);
497 kfree_skb(data->rx_skb[0]);
498 kfree_skb(data->rx_skb[1]);
499}
500
501static struct usb_driver bpa10x_driver = {
502 .name = "bpa10x",
503 .probe = bpa10x_probe,
504 .disconnect = bpa10x_disconnect,
505 .id_table = bpa10x_table,
506 .disable_hub_initiated_lpm = 1,
507};
508
509module_usb_driver(bpa10x_driver);
510
511MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
512MODULE_DESCRIPTION("Digianswer Bluetooth USB driver ver " VERSION);
513MODULE_VERSION(VERSION);
514MODULE_LICENSE("GPL");