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1da177e4 LT |
1 | /* |
2 | * | |
3 | * Digianswer Bluetooth USB driver | |
4 | * | |
e24b21ec | 5 | * Copyright (C) 2004-2007 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 | 24 | #include <linux/kernel.h> |
e24b21ec | 25 | #include <linux/module.h> |
1da177e4 LT |
26 | #include <linux/init.h> |
27 | #include <linux/slab.h> | |
28 | #include <linux/types.h> | |
e24b21ec | 29 | #include <linux/sched.h> |
1da177e4 | 30 | #include <linux/errno.h> |
e24b21ec | 31 | #include <linux/skbuff.h> |
1da177e4 LT |
32 | |
33 | #include <linux/usb.h> | |
34 | ||
35 | #include <net/bluetooth/bluetooth.h> | |
36 | #include <net/bluetooth/hci_core.h> | |
37 | ||
943cc592 MH |
38 | #include "hci_uart.h" |
39 | ||
40 | #define VERSION "0.11" | |
1da177e4 | 41 | |
e8549384 | 42 | static const struct usb_device_id bpa10x_table[] = { |
1da177e4 LT |
43 | /* Tektronix BPA 100/105 (Digianswer) */ |
44 | { USB_DEVICE(0x08fd, 0x0002) }, | |
45 | ||
46 | { } /* Terminating entry */ | |
47 | }; | |
48 | ||
49 | MODULE_DEVICE_TABLE(usb, bpa10x_table); | |
50 | ||
1da177e4 | 51 | struct bpa10x_data { |
e24b21ec MH |
52 | struct hci_dev *hdev; |
53 | struct usb_device *udev; | |
1da177e4 | 54 | |
e24b21ec MH |
55 | struct usb_anchor tx_anchor; |
56 | struct usb_anchor rx_anchor; | |
1da177e4 | 57 | |
e24b21ec | 58 | struct sk_buff *rx_skb[2]; |
1da177e4 LT |
59 | }; |
60 | ||
e24b21ec | 61 | static void bpa10x_tx_complete(struct urb *urb) |
1da177e4 | 62 | { |
e24b21ec MH |
63 | struct sk_buff *skb = urb->context; |
64 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; | |
1da177e4 | 65 | |
e24b21ec MH |
66 | BT_DBG("%s urb %p status %d count %d", hdev->name, |
67 | urb, urb->status, urb->actual_length); | |
1da177e4 | 68 | |
e24b21ec MH |
69 | if (!test_bit(HCI_RUNNING, &hdev->flags)) |
70 | goto done; | |
71 | ||
72 | if (!urb->status) | |
73 | hdev->stat.byte_tx += urb->transfer_buffer_length; | |
1da177e4 | 74 | else |
e24b21ec | 75 | hdev->stat.err_tx++; |
1da177e4 | 76 | |
e24b21ec MH |
77 | done: |
78 | kfree(urb->setup_packet); | |
1da177e4 | 79 | |
e24b21ec MH |
80 | kfree_skb(skb); |
81 | } | |
82 | ||
943cc592 MH |
83 | #define HCI_VENDOR_HDR_SIZE 5 |
84 | ||
85 | #define HCI_RECV_VENDOR \ | |
86 | .type = HCI_VENDOR_PKT, \ | |
87 | .hlen = HCI_VENDOR_HDR_SIZE, \ | |
88 | .loff = 3, \ | |
89 | .lsize = 2, \ | |
90 | .maxlen = HCI_MAX_FRAME_SIZE | |
91 | ||
92 | static const struct h4_recv_pkt bpa10x_recv_pkts[] = { | |
93 | { H4_RECV_ACL, .recv = hci_recv_frame }, | |
94 | { H4_RECV_SCO, .recv = hci_recv_frame }, | |
95 | { H4_RECV_EVENT, .recv = hci_recv_frame }, | |
96 | { HCI_RECV_VENDOR, .recv = hci_recv_diag }, | |
97 | }; | |
98 | ||
e24b21ec MH |
99 | static void bpa10x_rx_complete(struct urb *urb) |
100 | { | |
101 | struct hci_dev *hdev = urb->context; | |
155961e8 | 102 | struct bpa10x_data *data = hci_get_drvdata(hdev); |
e24b21ec | 103 | int err; |
1da177e4 | 104 | |
e24b21ec MH |
105 | BT_DBG("%s urb %p status %d count %d", hdev->name, |
106 | urb, urb->status, urb->actual_length); | |
1da177e4 | 107 | |
e24b21ec MH |
108 | if (!test_bit(HCI_RUNNING, &hdev->flags)) |
109 | return; | |
1da177e4 | 110 | |
e24b21ec | 111 | if (urb->status == 0) { |
943cc592 MH |
112 | bool idx = usb_pipebulk(urb->pipe); |
113 | ||
114 | data->rx_skb[idx] = h4_recv_buf(hdev, data->rx_skb[idx], | |
e24b21ec | 115 | urb->transfer_buffer, |
943cc592 MH |
116 | urb->actual_length, |
117 | bpa10x_recv_pkts, | |
118 | ARRAY_SIZE(bpa10x_recv_pkts)); | |
119 | if (IS_ERR(data->rx_skb[idx])) { | |
e24b21ec MH |
120 | BT_ERR("%s corrupted event packet", hdev->name); |
121 | hdev->stat.err_rx++; | |
943cc592 | 122 | data->rx_skb[idx] = NULL; |
e24b21ec | 123 | } |
1da177e4 LT |
124 | } |
125 | ||
e24b21ec MH |
126 | usb_anchor_urb(urb, &data->rx_anchor); |
127 | ||
128 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
129 | if (err < 0) { | |
130 | BT_ERR("%s urb %p failed to resubmit (%d)", | |
131 | hdev->name, urb, -err); | |
132 | usb_unanchor_urb(urb); | |
1da177e4 LT |
133 | } |
134 | } | |
135 | ||
e24b21ec | 136 | static inline int bpa10x_submit_intr_urb(struct hci_dev *hdev) |
1da177e4 | 137 | { |
155961e8 | 138 | struct bpa10x_data *data = hci_get_drvdata(hdev); |
e24b21ec MH |
139 | struct urb *urb; |
140 | unsigned char *buf; | |
141 | unsigned int pipe; | |
142 | int err, size = 16; | |
1da177e4 | 143 | |
e24b21ec | 144 | BT_DBG("%s", hdev->name); |
1da177e4 | 145 | |
e24b21ec MH |
146 | urb = usb_alloc_urb(0, GFP_KERNEL); |
147 | if (!urb) | |
148 | return -ENOMEM; | |
1da177e4 | 149 | |
e24b21ec MH |
150 | buf = kmalloc(size, GFP_KERNEL); |
151 | if (!buf) { | |
152 | usb_free_urb(urb); | |
153 | return -ENOMEM; | |
154 | } | |
1da177e4 | 155 | |
e24b21ec | 156 | pipe = usb_rcvintpipe(data->udev, 0x81); |
1da177e4 | 157 | |
e24b21ec MH |
158 | usb_fill_int_urb(urb, data->udev, pipe, buf, size, |
159 | bpa10x_rx_complete, hdev, 1); | |
1da177e4 | 160 | |
e24b21ec | 161 | urb->transfer_flags |= URB_FREE_BUFFER; |
1da177e4 | 162 | |
e24b21ec | 163 | usb_anchor_urb(urb, &data->rx_anchor); |
1da177e4 | 164 | |
e24b21ec MH |
165 | err = usb_submit_urb(urb, GFP_KERNEL); |
166 | if (err < 0) { | |
167 | BT_ERR("%s urb %p submission failed (%d)", | |
168 | hdev->name, urb, -err); | |
169 | usb_unanchor_urb(urb); | |
1da177e4 LT |
170 | } |
171 | ||
e24b21ec | 172 | usb_free_urb(urb); |
1da177e4 | 173 | |
e24b21ec | 174 | return err; |
1da177e4 LT |
175 | } |
176 | ||
e24b21ec | 177 | static inline int bpa10x_submit_bulk_urb(struct hci_dev *hdev) |
1da177e4 | 178 | { |
155961e8 | 179 | struct bpa10x_data *data = hci_get_drvdata(hdev); |
1da177e4 | 180 | struct urb *urb; |
1da177e4 | 181 | unsigned char *buf; |
e24b21ec MH |
182 | unsigned int pipe; |
183 | int err, size = 64; | |
1da177e4 | 184 | |
e24b21ec | 185 | BT_DBG("%s", hdev->name); |
1da177e4 | 186 | |
e24b21ec | 187 | urb = usb_alloc_urb(0, GFP_KERNEL); |
1da177e4 | 188 | if (!urb) |
e24b21ec | 189 | return -ENOMEM; |
1da177e4 | 190 | |
e24b21ec | 191 | buf = kmalloc(size, GFP_KERNEL); |
1da177e4 LT |
192 | if (!buf) { |
193 | usb_free_urb(urb); | |
e24b21ec | 194 | return -ENOMEM; |
1da177e4 LT |
195 | } |
196 | ||
e24b21ec | 197 | pipe = usb_rcvbulkpipe(data->udev, 0x82); |
1da177e4 | 198 | |
e24b21ec MH |
199 | usb_fill_bulk_urb(urb, data->udev, pipe, |
200 | buf, size, bpa10x_rx_complete, hdev); | |
1da177e4 | 201 | |
e24b21ec | 202 | urb->transfer_flags |= URB_FREE_BUFFER; |
1da177e4 | 203 | |
e24b21ec | 204 | usb_anchor_urb(urb, &data->rx_anchor); |
1da177e4 | 205 | |
e24b21ec MH |
206 | err = usb_submit_urb(urb, GFP_KERNEL); |
207 | if (err < 0) { | |
208 | BT_ERR("%s urb %p submission failed (%d)", | |
209 | hdev->name, urb, -err); | |
210 | usb_unanchor_urb(urb); | |
1da177e4 LT |
211 | } |
212 | ||
1da177e4 | 213 | usb_free_urb(urb); |
e24b21ec MH |
214 | |
215 | return err; | |
1da177e4 LT |
216 | } |
217 | ||
218 | static int bpa10x_open(struct hci_dev *hdev) | |
219 | { | |
155961e8 | 220 | struct bpa10x_data *data = hci_get_drvdata(hdev); |
1da177e4 LT |
221 | int err; |
222 | ||
e24b21ec | 223 | BT_DBG("%s", hdev->name); |
1da177e4 | 224 | |
e24b21ec MH |
225 | err = bpa10x_submit_intr_urb(hdev); |
226 | if (err < 0) | |
227 | goto error; | |
1da177e4 | 228 | |
e24b21ec MH |
229 | err = bpa10x_submit_bulk_urb(hdev); |
230 | if (err < 0) | |
231 | goto error; | |
1da177e4 | 232 | |
e24b21ec | 233 | return 0; |
1da177e4 | 234 | |
e24b21ec MH |
235 | error: |
236 | usb_kill_anchored_urbs(&data->rx_anchor); | |
1da177e4 | 237 | |
1da177e4 LT |
238 | return err; |
239 | } | |
240 | ||
241 | static int bpa10x_close(struct hci_dev *hdev) | |
242 | { | |
155961e8 | 243 | struct bpa10x_data *data = hci_get_drvdata(hdev); |
1da177e4 | 244 | |
e24b21ec | 245 | BT_DBG("%s", hdev->name); |
1da177e4 | 246 | |
e24b21ec | 247 | usb_kill_anchored_urbs(&data->rx_anchor); |
1da177e4 LT |
248 | |
249 | return 0; | |
250 | } | |
251 | ||
252 | static int bpa10x_flush(struct hci_dev *hdev) | |
253 | { | |
155961e8 | 254 | struct bpa10x_data *data = hci_get_drvdata(hdev); |
1da177e4 | 255 | |
e24b21ec | 256 | BT_DBG("%s", hdev->name); |
1da177e4 | 257 | |
e24b21ec | 258 | usb_kill_anchored_urbs(&data->tx_anchor); |
1da177e4 LT |
259 | |
260 | return 0; | |
261 | } | |
262 | ||
ddd68ec8 MH |
263 | static int bpa10x_setup(struct hci_dev *hdev) |
264 | { | |
265 | const u8 req[] = { 0x07 }; | |
266 | struct sk_buff *skb; | |
267 | ||
268 | BT_DBG("%s", hdev->name); | |
269 | ||
270 | /* Read revision string */ | |
271 | skb = __hci_cmd_sync(hdev, 0xfc0e, sizeof(req), req, HCI_INIT_TIMEOUT); | |
272 | if (IS_ERR(skb)) | |
273 | return PTR_ERR(skb); | |
274 | ||
275 | BT_INFO("%s: %s", hdev->name, (char *)(skb->data + 1)); | |
276 | ||
277 | kfree_skb(skb); | |
278 | return 0; | |
279 | } | |
280 | ||
7bd8f09f | 281 | static int bpa10x_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 | 282 | { |
155961e8 | 283 | struct bpa10x_data *data = hci_get_drvdata(hdev); |
e24b21ec MH |
284 | struct usb_ctrlrequest *dr; |
285 | struct urb *urb; | |
286 | unsigned int pipe; | |
287 | int err; | |
1da177e4 | 288 | |
e24b21ec | 289 | BT_DBG("%s", hdev->name); |
1da177e4 | 290 | |
7bd8f09f MH |
291 | skb->dev = (void *) hdev; |
292 | ||
e24b21ec MH |
293 | urb = usb_alloc_urb(0, GFP_ATOMIC); |
294 | if (!urb) | |
295 | return -ENOMEM; | |
1da177e4 LT |
296 | |
297 | /* Prepend skb with frame type */ | |
618e8bc2 | 298 | *skb_push(skb, 1) = hci_skb_pkt_type(skb); |
1da177e4 | 299 | |
618e8bc2 | 300 | switch (hci_skb_pkt_type(skb)) { |
1da177e4 | 301 | case HCI_COMMAND_PKT: |
e24b21ec MH |
302 | dr = kmalloc(sizeof(*dr), GFP_ATOMIC); |
303 | if (!dr) { | |
304 | usb_free_urb(urb); | |
305 | return -ENOMEM; | |
306 | } | |
307 | ||
308 | dr->bRequestType = USB_TYPE_VENDOR; | |
309 | dr->bRequest = 0; | |
310 | dr->wIndex = 0; | |
311 | dr->wValue = 0; | |
312 | dr->wLength = __cpu_to_le16(skb->len); | |
313 | ||
314 | pipe = usb_sndctrlpipe(data->udev, 0x00); | |
315 | ||
316 | usb_fill_control_urb(urb, data->udev, pipe, (void *) dr, | |
317 | skb->data, skb->len, bpa10x_tx_complete, skb); | |
318 | ||
1da177e4 | 319 | hdev->stat.cmd_tx++; |
1da177e4 LT |
320 | break; |
321 | ||
322 | case HCI_ACLDATA_PKT: | |
e24b21ec MH |
323 | pipe = usb_sndbulkpipe(data->udev, 0x02); |
324 | ||
325 | usb_fill_bulk_urb(urb, data->udev, pipe, | |
326 | skb->data, skb->len, bpa10x_tx_complete, skb); | |
327 | ||
1da177e4 | 328 | hdev->stat.acl_tx++; |
1da177e4 LT |
329 | break; |
330 | ||
331 | case HCI_SCODATA_PKT: | |
e24b21ec MH |
332 | pipe = usb_sndbulkpipe(data->udev, 0x02); |
333 | ||
334 | usb_fill_bulk_urb(urb, data->udev, pipe, | |
335 | skb->data, skb->len, bpa10x_tx_complete, skb); | |
336 | ||
1da177e4 | 337 | hdev->stat.sco_tx++; |
1da177e4 | 338 | break; |
1da177e4 | 339 | |
e24b21ec | 340 | default: |
cb7cd429 | 341 | usb_free_urb(urb); |
e24b21ec MH |
342 | return -EILSEQ; |
343 | } | |
344 | ||
345 | usb_anchor_urb(urb, &data->tx_anchor); | |
1da177e4 | 346 | |
e24b21ec MH |
347 | err = usb_submit_urb(urb, GFP_ATOMIC); |
348 | if (err < 0) { | |
349 | BT_ERR("%s urb %p submission failed", hdev->name, urb); | |
350 | kfree(urb->setup_packet); | |
351 | usb_unanchor_urb(urb); | |
352 | } | |
1da177e4 | 353 | |
e24b21ec | 354 | usb_free_urb(urb); |
1da177e4 LT |
355 | |
356 | return 0; | |
357 | } | |
358 | ||
881f7e86 MH |
359 | static int bpa10x_set_diag(struct hci_dev *hdev, bool enable) |
360 | { | |
361 | const u8 req[] = { 0x00, enable }; | |
362 | struct sk_buff *skb; | |
363 | ||
364 | BT_DBG("%s", hdev->name); | |
365 | ||
366 | if (!test_bit(HCI_RUNNING, &hdev->flags)) | |
367 | return -ENETDOWN; | |
368 | ||
369 | /* Enable sniffer operation */ | |
370 | skb = __hci_cmd_sync(hdev, 0xfc0e, sizeof(req), req, HCI_INIT_TIMEOUT); | |
371 | if (IS_ERR(skb)) | |
372 | return PTR_ERR(skb); | |
373 | ||
374 | kfree_skb(skb); | |
375 | return 0; | |
376 | } | |
377 | ||
1da177e4 LT |
378 | static int bpa10x_probe(struct usb_interface *intf, const struct usb_device_id *id) |
379 | { | |
1da177e4 | 380 | struct bpa10x_data *data; |
e24b21ec | 381 | struct hci_dev *hdev; |
1da177e4 LT |
382 | int err; |
383 | ||
384 | BT_DBG("intf %p id %p", intf, id); | |
385 | ||
e24b21ec | 386 | if (intf->cur_altsetting->desc.bInterfaceNumber != 0) |
1da177e4 LT |
387 | return -ENODEV; |
388 | ||
704687ce | 389 | data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL); |
e24b21ec | 390 | if (!data) |
1da177e4 | 391 | return -ENOMEM; |
1da177e4 | 392 | |
e24b21ec | 393 | data->udev = interface_to_usbdev(intf); |
1da177e4 | 394 | |
e24b21ec MH |
395 | init_usb_anchor(&data->tx_anchor); |
396 | init_usb_anchor(&data->rx_anchor); | |
1da177e4 LT |
397 | |
398 | hdev = hci_alloc_dev(); | |
704687ce | 399 | if (!hdev) |
1da177e4 | 400 | return -ENOMEM; |
1da177e4 | 401 | |
c13854ce | 402 | hdev->bus = HCI_USB; |
155961e8 | 403 | hci_set_drvdata(hdev, data); |
e24b21ec MH |
404 | |
405 | data->hdev = hdev; | |
406 | ||
1da177e4 LT |
407 | SET_HCIDEV_DEV(hdev, &intf->dev); |
408 | ||
e24b21ec MH |
409 | hdev->open = bpa10x_open; |
410 | hdev->close = bpa10x_close; | |
411 | hdev->flush = bpa10x_flush; | |
ddd68ec8 | 412 | hdev->setup = bpa10x_setup; |
e24b21ec | 413 | hdev->send = bpa10x_send_frame; |
881f7e86 | 414 | hdev->set_diag = bpa10x_set_diag; |
1da177e4 | 415 | |
a6c511c6 | 416 | set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); |
7a9d4020 | 417 | |
1da177e4 LT |
418 | err = hci_register_dev(hdev); |
419 | if (err < 0) { | |
1da177e4 LT |
420 | hci_free_dev(hdev); |
421 | return err; | |
422 | } | |
423 | ||
424 | usb_set_intfdata(intf, data); | |
425 | ||
426 | return 0; | |
427 | } | |
428 | ||
429 | static void bpa10x_disconnect(struct usb_interface *intf) | |
430 | { | |
431 | struct bpa10x_data *data = usb_get_intfdata(intf); | |
1da177e4 LT |
432 | |
433 | BT_DBG("intf %p", intf); | |
434 | ||
e24b21ec | 435 | if (!data) |
1da177e4 LT |
436 | return; |
437 | ||
438 | usb_set_intfdata(intf, NULL); | |
439 | ||
e24b21ec | 440 | hci_unregister_dev(data->hdev); |
1da177e4 | 441 | |
e24b21ec | 442 | hci_free_dev(data->hdev); |
d25442ba DH |
443 | kfree_skb(data->rx_skb[0]); |
444 | kfree_skb(data->rx_skb[1]); | |
1da177e4 LT |
445 | } |
446 | ||
447 | static struct usb_driver bpa10x_driver = { | |
1da177e4 LT |
448 | .name = "bpa10x", |
449 | .probe = bpa10x_probe, | |
450 | .disconnect = bpa10x_disconnect, | |
451 | .id_table = bpa10x_table, | |
e1f12eb6 | 452 | .disable_hub_initiated_lpm = 1, |
1da177e4 LT |
453 | }; |
454 | ||
93f1508c | 455 | module_usb_driver(bpa10x_driver); |
1da177e4 | 456 | |
1da177e4 LT |
457 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
458 | MODULE_DESCRIPTION("Digianswer Bluetooth USB driver ver " VERSION); | |
459 | MODULE_VERSION(VERSION); | |
460 | MODULE_LICENSE("GPL"); |