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Commit | Line | Data |
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1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * | |
4 | * Digianswer Bluetooth USB driver | |
5 | * | |
e24b21ec | 6 | * Copyright (C) 2004-2007 Marcel Holtmann <marcel@holtmann.org> |
1da177e4 LT |
7 | */ |
8 | ||
1da177e4 | 9 | #include <linux/kernel.h> |
e24b21ec | 10 | #include <linux/module.h> |
1da177e4 LT |
11 | #include <linux/init.h> |
12 | #include <linux/slab.h> | |
13 | #include <linux/types.h> | |
e24b21ec | 14 | #include <linux/sched.h> |
1da177e4 | 15 | #include <linux/errno.h> |
e24b21ec | 16 | #include <linux/skbuff.h> |
1da177e4 LT |
17 | |
18 | #include <linux/usb.h> | |
19 | ||
20 | #include <net/bluetooth/bluetooth.h> | |
21 | #include <net/bluetooth/hci_core.h> | |
22 | ||
07eb96a5 | 23 | #include "h4_recv.h" |
943cc592 MH |
24 | |
25 | #define VERSION "0.11" | |
1da177e4 | 26 | |
e8549384 | 27 | static const struct usb_device_id bpa10x_table[] = { |
1da177e4 LT |
28 | /* Tektronix BPA 100/105 (Digianswer) */ |
29 | { USB_DEVICE(0x08fd, 0x0002) }, | |
30 | ||
31 | { } /* Terminating entry */ | |
32 | }; | |
33 | ||
34 | MODULE_DEVICE_TABLE(usb, bpa10x_table); | |
35 | ||
1da177e4 | 36 | struct bpa10x_data { |
e24b21ec MH |
37 | struct hci_dev *hdev; |
38 | struct usb_device *udev; | |
1da177e4 | 39 | |
e24b21ec MH |
40 | struct usb_anchor tx_anchor; |
41 | struct usb_anchor rx_anchor; | |
1da177e4 | 42 | |
e24b21ec | 43 | struct sk_buff *rx_skb[2]; |
1da177e4 LT |
44 | }; |
45 | ||
e24b21ec | 46 | static void bpa10x_tx_complete(struct urb *urb) |
1da177e4 | 47 | { |
e24b21ec MH |
48 | struct sk_buff *skb = urb->context; |
49 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; | |
1da177e4 | 50 | |
e24b21ec MH |
51 | BT_DBG("%s urb %p status %d count %d", hdev->name, |
52 | urb, urb->status, urb->actual_length); | |
1da177e4 | 53 | |
e24b21ec MH |
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; | |
1da177e4 | 59 | else |
e24b21ec | 60 | hdev->stat.err_tx++; |
1da177e4 | 61 | |
e24b21ec MH |
62 | done: |
63 | kfree(urb->setup_packet); | |
1da177e4 | 64 | |
e24b21ec MH |
65 | kfree_skb(skb); |
66 | } | |
67 | ||
943cc592 MH |
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 | ||
77 | static 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 | ||
e24b21ec MH |
84 | static void bpa10x_rx_complete(struct urb *urb) |
85 | { | |
86 | struct hci_dev *hdev = urb->context; | |
155961e8 | 87 | struct bpa10x_data *data = hci_get_drvdata(hdev); |
e24b21ec | 88 | int err; |
1da177e4 | 89 | |
e24b21ec MH |
90 | BT_DBG("%s urb %p status %d count %d", hdev->name, |
91 | urb, urb->status, urb->actual_length); | |
1da177e4 | 92 | |
e24b21ec MH |
93 | if (!test_bit(HCI_RUNNING, &hdev->flags)) |
94 | return; | |
1da177e4 | 95 | |
e24b21ec | 96 | if (urb->status == 0) { |
943cc592 MH |
97 | bool idx = usb_pipebulk(urb->pipe); |
98 | ||
99 | data->rx_skb[idx] = h4_recv_buf(hdev, data->rx_skb[idx], | |
e24b21ec | 100 | urb->transfer_buffer, |
943cc592 MH |
101 | urb->actual_length, |
102 | bpa10x_recv_pkts, | |
103 | ARRAY_SIZE(bpa10x_recv_pkts)); | |
104 | if (IS_ERR(data->rx_skb[idx])) { | |
2064ee33 | 105 | bt_dev_err(hdev, "corrupted event packet"); |
e24b21ec | 106 | hdev->stat.err_rx++; |
943cc592 | 107 | data->rx_skb[idx] = NULL; |
e24b21ec | 108 | } |
1da177e4 LT |
109 | } |
110 | ||
e24b21ec MH |
111 | usb_anchor_urb(urb, &data->rx_anchor); |
112 | ||
113 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
114 | if (err < 0) { | |
2064ee33 | 115 | bt_dev_err(hdev, "urb %p failed to resubmit (%d)", urb, -err); |
e24b21ec | 116 | usb_unanchor_urb(urb); |
1da177e4 LT |
117 | } |
118 | } | |
119 | ||
e24b21ec | 120 | static inline int bpa10x_submit_intr_urb(struct hci_dev *hdev) |
1da177e4 | 121 | { |
155961e8 | 122 | struct bpa10x_data *data = hci_get_drvdata(hdev); |
e24b21ec MH |
123 | struct urb *urb; |
124 | unsigned char *buf; | |
125 | unsigned int pipe; | |
126 | int err, size = 16; | |
1da177e4 | 127 | |
e24b21ec | 128 | BT_DBG("%s", hdev->name); |
1da177e4 | 129 | |
e24b21ec MH |
130 | urb = usb_alloc_urb(0, GFP_KERNEL); |
131 | if (!urb) | |
132 | return -ENOMEM; | |
1da177e4 | 133 | |
e24b21ec MH |
134 | buf = kmalloc(size, GFP_KERNEL); |
135 | if (!buf) { | |
136 | usb_free_urb(urb); | |
137 | return -ENOMEM; | |
138 | } | |
1da177e4 | 139 | |
e24b21ec | 140 | pipe = usb_rcvintpipe(data->udev, 0x81); |
1da177e4 | 141 | |
e24b21ec MH |
142 | usb_fill_int_urb(urb, data->udev, pipe, buf, size, |
143 | bpa10x_rx_complete, hdev, 1); | |
1da177e4 | 144 | |
e24b21ec | 145 | urb->transfer_flags |= URB_FREE_BUFFER; |
1da177e4 | 146 | |
e24b21ec | 147 | usb_anchor_urb(urb, &data->rx_anchor); |
1da177e4 | 148 | |
e24b21ec MH |
149 | err = usb_submit_urb(urb, GFP_KERNEL); |
150 | if (err < 0) { | |
2064ee33 | 151 | bt_dev_err(hdev, "urb %p submission failed (%d)", urb, -err); |
e24b21ec | 152 | usb_unanchor_urb(urb); |
1da177e4 LT |
153 | } |
154 | ||
e24b21ec | 155 | usb_free_urb(urb); |
1da177e4 | 156 | |
e24b21ec | 157 | return err; |
1da177e4 LT |
158 | } |
159 | ||
e24b21ec | 160 | static inline int bpa10x_submit_bulk_urb(struct hci_dev *hdev) |
1da177e4 | 161 | { |
155961e8 | 162 | struct bpa10x_data *data = hci_get_drvdata(hdev); |
1da177e4 | 163 | struct urb *urb; |
1da177e4 | 164 | unsigned char *buf; |
e24b21ec MH |
165 | unsigned int pipe; |
166 | int err, size = 64; | |
1da177e4 | 167 | |
e24b21ec | 168 | BT_DBG("%s", hdev->name); |
1da177e4 | 169 | |
e24b21ec | 170 | urb = usb_alloc_urb(0, GFP_KERNEL); |
1da177e4 | 171 | if (!urb) |
e24b21ec | 172 | return -ENOMEM; |
1da177e4 | 173 | |
e24b21ec | 174 | buf = kmalloc(size, GFP_KERNEL); |
1da177e4 LT |
175 | if (!buf) { |
176 | usb_free_urb(urb); | |
e24b21ec | 177 | return -ENOMEM; |
1da177e4 LT |
178 | } |
179 | ||
e24b21ec | 180 | pipe = usb_rcvbulkpipe(data->udev, 0x82); |
1da177e4 | 181 | |
e24b21ec MH |
182 | usb_fill_bulk_urb(urb, data->udev, pipe, |
183 | buf, size, bpa10x_rx_complete, hdev); | |
1da177e4 | 184 | |
e24b21ec | 185 | urb->transfer_flags |= URB_FREE_BUFFER; |
1da177e4 | 186 | |
e24b21ec | 187 | usb_anchor_urb(urb, &data->rx_anchor); |
1da177e4 | 188 | |
e24b21ec MH |
189 | err = usb_submit_urb(urb, GFP_KERNEL); |
190 | if (err < 0) { | |
2064ee33 | 191 | bt_dev_err(hdev, "urb %p submission failed (%d)", urb, -err); |
e24b21ec | 192 | usb_unanchor_urb(urb); |
1da177e4 LT |
193 | } |
194 | ||
1da177e4 | 195 | usb_free_urb(urb); |
e24b21ec MH |
196 | |
197 | return err; | |
1da177e4 LT |
198 | } |
199 | ||
200 | static int bpa10x_open(struct hci_dev *hdev) | |
201 | { | |
155961e8 | 202 | struct bpa10x_data *data = hci_get_drvdata(hdev); |
1da177e4 LT |
203 | int err; |
204 | ||
e24b21ec | 205 | BT_DBG("%s", hdev->name); |
1da177e4 | 206 | |
e24b21ec MH |
207 | err = bpa10x_submit_intr_urb(hdev); |
208 | if (err < 0) | |
209 | goto error; | |
1da177e4 | 210 | |
e24b21ec MH |
211 | err = bpa10x_submit_bulk_urb(hdev); |
212 | if (err < 0) | |
213 | goto error; | |
1da177e4 | 214 | |
e24b21ec | 215 | return 0; |
1da177e4 | 216 | |
e24b21ec MH |
217 | error: |
218 | usb_kill_anchored_urbs(&data->rx_anchor); | |
1da177e4 | 219 | |
1da177e4 LT |
220 | return err; |
221 | } | |
222 | ||
223 | static int bpa10x_close(struct hci_dev *hdev) | |
224 | { | |
155961e8 | 225 | struct bpa10x_data *data = hci_get_drvdata(hdev); |
1da177e4 | 226 | |
e24b21ec | 227 | BT_DBG("%s", hdev->name); |
1da177e4 | 228 | |
e24b21ec | 229 | usb_kill_anchored_urbs(&data->rx_anchor); |
1da177e4 LT |
230 | |
231 | return 0; | |
232 | } | |
233 | ||
234 | static int bpa10x_flush(struct hci_dev *hdev) | |
235 | { | |
155961e8 | 236 | struct bpa10x_data *data = hci_get_drvdata(hdev); |
1da177e4 | 237 | |
e24b21ec | 238 | BT_DBG("%s", hdev->name); |
1da177e4 | 239 | |
e24b21ec | 240 | usb_kill_anchored_urbs(&data->tx_anchor); |
1da177e4 LT |
241 | |
242 | return 0; | |
243 | } | |
244 | ||
ddd68ec8 MH |
245 | static int bpa10x_setup(struct hci_dev *hdev) |
246 | { | |
cca32837 | 247 | static const u8 req[] = { 0x07 }; |
ddd68ec8 MH |
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 | ||
2064ee33 | 257 | bt_dev_info(hdev, "%s", (char *)(skb->data + 1)); |
ddd68ec8 | 258 | |
b2999c19 MH |
259 | hci_set_fw_info(hdev, "%s", skb->data + 1); |
260 | ||
ddd68ec8 MH |
261 | kfree_skb(skb); |
262 | return 0; | |
263 | } | |
264 | ||
7bd8f09f | 265 | static int bpa10x_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 | 266 | { |
155961e8 | 267 | struct bpa10x_data *data = hci_get_drvdata(hdev); |
e24b21ec MH |
268 | struct usb_ctrlrequest *dr; |
269 | struct urb *urb; | |
270 | unsigned int pipe; | |
271 | int err; | |
1da177e4 | 272 | |
e24b21ec | 273 | BT_DBG("%s", hdev->name); |
1da177e4 | 274 | |
7bd8f09f MH |
275 | skb->dev = (void *) hdev; |
276 | ||
478113e4 | 277 | urb = usb_alloc_urb(0, GFP_KERNEL); |
e24b21ec MH |
278 | if (!urb) |
279 | return -ENOMEM; | |
1da177e4 LT |
280 | |
281 | /* Prepend skb with frame type */ | |
d58ff351 | 282 | *(u8 *)skb_push(skb, 1) = hci_skb_pkt_type(skb); |
1da177e4 | 283 | |
618e8bc2 | 284 | switch (hci_skb_pkt_type(skb)) { |
1da177e4 | 285 | case HCI_COMMAND_PKT: |
478113e4 | 286 | dr = kmalloc(sizeof(*dr), GFP_KERNEL); |
e24b21ec MH |
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 | ||
1da177e4 | 303 | hdev->stat.cmd_tx++; |
1da177e4 LT |
304 | break; |
305 | ||
306 | case HCI_ACLDATA_PKT: | |
e24b21ec MH |
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 | ||
1da177e4 | 312 | hdev->stat.acl_tx++; |
1da177e4 LT |
313 | break; |
314 | ||
315 | case HCI_SCODATA_PKT: | |
e24b21ec MH |
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 | ||
1da177e4 | 321 | hdev->stat.sco_tx++; |
1da177e4 | 322 | break; |
1da177e4 | 323 | |
e24b21ec | 324 | default: |
cb7cd429 | 325 | usb_free_urb(urb); |
e24b21ec MH |
326 | return -EILSEQ; |
327 | } | |
328 | ||
329 | usb_anchor_urb(urb, &data->tx_anchor); | |
1da177e4 | 330 | |
478113e4 | 331 | err = usb_submit_urb(urb, GFP_KERNEL); |
e24b21ec | 332 | if (err < 0) { |
2064ee33 | 333 | bt_dev_err(hdev, "urb %p submission failed", urb); |
e24b21ec MH |
334 | kfree(urb->setup_packet); |
335 | usb_unanchor_urb(urb); | |
336 | } | |
1da177e4 | 337 | |
e24b21ec | 338 | usb_free_urb(urb); |
1da177e4 | 339 | |
d94dfd79 | 340 | return err; |
1da177e4 LT |
341 | } |
342 | ||
881f7e86 MH |
343 | static 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 | ||
82b7d856 FS |
362 | static int bpa10x_probe(struct usb_interface *intf, |
363 | const struct usb_device_id *id) | |
1da177e4 | 364 | { |
1da177e4 | 365 | struct bpa10x_data *data; |
e24b21ec | 366 | struct hci_dev *hdev; |
1da177e4 LT |
367 | int err; |
368 | ||
369 | BT_DBG("intf %p id %p", intf, id); | |
370 | ||
e24b21ec | 371 | if (intf->cur_altsetting->desc.bInterfaceNumber != 0) |
1da177e4 LT |
372 | return -ENODEV; |
373 | ||
704687ce | 374 | data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL); |
e24b21ec | 375 | if (!data) |
1da177e4 | 376 | return -ENOMEM; |
1da177e4 | 377 | |
e24b21ec | 378 | data->udev = interface_to_usbdev(intf); |
1da177e4 | 379 | |
e24b21ec MH |
380 | init_usb_anchor(&data->tx_anchor); |
381 | init_usb_anchor(&data->rx_anchor); | |
1da177e4 LT |
382 | |
383 | hdev = hci_alloc_dev(); | |
704687ce | 384 | if (!hdev) |
1da177e4 | 385 | return -ENOMEM; |
1da177e4 | 386 | |
c13854ce | 387 | hdev->bus = HCI_USB; |
155961e8 | 388 | hci_set_drvdata(hdev, data); |
e24b21ec MH |
389 | |
390 | data->hdev = hdev; | |
391 | ||
1da177e4 LT |
392 | SET_HCIDEV_DEV(hdev, &intf->dev); |
393 | ||
e24b21ec MH |
394 | hdev->open = bpa10x_open; |
395 | hdev->close = bpa10x_close; | |
396 | hdev->flush = bpa10x_flush; | |
ddd68ec8 | 397 | hdev->setup = bpa10x_setup; |
e24b21ec | 398 | hdev->send = bpa10x_send_frame; |
881f7e86 | 399 | hdev->set_diag = bpa10x_set_diag; |
1da177e4 | 400 | |
a6c511c6 | 401 | set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); |
7a9d4020 | 402 | |
1da177e4 LT |
403 | err = hci_register_dev(hdev); |
404 | if (err < 0) { | |
1da177e4 LT |
405 | hci_free_dev(hdev); |
406 | return err; | |
407 | } | |
408 | ||
409 | usb_set_intfdata(intf, data); | |
410 | ||
411 | return 0; | |
412 | } | |
413 | ||
414 | static void bpa10x_disconnect(struct usb_interface *intf) | |
415 | { | |
416 | struct bpa10x_data *data = usb_get_intfdata(intf); | |
1da177e4 LT |
417 | |
418 | BT_DBG("intf %p", intf); | |
419 | ||
e24b21ec | 420 | if (!data) |
1da177e4 LT |
421 | return; |
422 | ||
423 | usb_set_intfdata(intf, NULL); | |
424 | ||
e24b21ec | 425 | hci_unregister_dev(data->hdev); |
1da177e4 | 426 | |
e24b21ec | 427 | hci_free_dev(data->hdev); |
d25442ba DH |
428 | kfree_skb(data->rx_skb[0]); |
429 | kfree_skb(data->rx_skb[1]); | |
1da177e4 LT |
430 | } |
431 | ||
432 | static struct usb_driver bpa10x_driver = { | |
1da177e4 LT |
433 | .name = "bpa10x", |
434 | .probe = bpa10x_probe, | |
435 | .disconnect = bpa10x_disconnect, | |
436 | .id_table = bpa10x_table, | |
e1f12eb6 | 437 | .disable_hub_initiated_lpm = 1, |
1da177e4 LT |
438 | }; |
439 | ||
93f1508c | 440 | module_usb_driver(bpa10x_driver); |
1da177e4 | 441 | |
1da177e4 LT |
442 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
443 | MODULE_DESCRIPTION("Digianswer Bluetooth USB driver ver " VERSION); | |
444 | MODULE_VERSION(VERSION); | |
445 | MODULE_LICENSE("GPL"); |