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811f9b97e360fa416d30a24d54a1b947d85d1512
[deliverable/linux.git] / drivers / bluetooth / btusb.c
1 /*
2 *
3 * Generic Bluetooth USB driver
4 *
5 * Copyright (C) 2005-2008 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/module.h>
25 #include <linux/usb.h>
26 #include <linux/firmware.h>
27 #include <asm/unaligned.h>
28
29 #include <net/bluetooth/bluetooth.h>
30 #include <net/bluetooth/hci_core.h>
31
32 #include "btintel.h"
33 #include "btbcm.h"
34 #include "btrtl.h"
35
36 #define VERSION "0.8"
37
38 static bool disable_scofix;
39 static bool force_scofix;
40
41 static bool reset = true;
42
43 static struct usb_driver btusb_driver;
44
45 #define BTUSB_IGNORE 0x01
46 #define BTUSB_DIGIANSWER 0x02
47 #define BTUSB_CSR 0x04
48 #define BTUSB_SNIFFER 0x08
49 #define BTUSB_BCM92035 0x10
50 #define BTUSB_BROKEN_ISOC 0x20
51 #define BTUSB_WRONG_SCO_MTU 0x40
52 #define BTUSB_ATH3012 0x80
53 #define BTUSB_INTEL 0x100
54 #define BTUSB_INTEL_BOOT 0x200
55 #define BTUSB_BCM_PATCHRAM 0x400
56 #define BTUSB_MARVELL 0x800
57 #define BTUSB_SWAVE 0x1000
58 #define BTUSB_INTEL_NEW 0x2000
59 #define BTUSB_AMP 0x4000
60 #define BTUSB_QCA_ROME 0x8000
61 #define BTUSB_BCM_APPLE 0x10000
62 #define BTUSB_REALTEK 0x20000
63 #define BTUSB_BCM2045 0x40000
64 #define BTUSB_IFNUM_2 0x80000
65
66 static const struct usb_device_id btusb_table[] = {
67 /* Generic Bluetooth USB device */
68 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
69
70 /* Generic Bluetooth AMP device */
71 { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
72
73 /* Generic Bluetooth USB interface */
74 { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
75
76 /* Apple-specific (Broadcom) devices */
77 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
78 .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
79
80 /* MediaTek MT76x0E */
81 { USB_DEVICE(0x0e8d, 0x763f) },
82
83 /* Broadcom SoftSailing reporting vendor specific */
84 { USB_DEVICE(0x0a5c, 0x21e1) },
85
86 /* Apple MacBookPro 7,1 */
87 { USB_DEVICE(0x05ac, 0x8213) },
88
89 /* Apple iMac11,1 */
90 { USB_DEVICE(0x05ac, 0x8215) },
91
92 /* Apple MacBookPro6,2 */
93 { USB_DEVICE(0x05ac, 0x8218) },
94
95 /* Apple MacBookAir3,1, MacBookAir3,2 */
96 { USB_DEVICE(0x05ac, 0x821b) },
97
98 /* Apple MacBookAir4,1 */
99 { USB_DEVICE(0x05ac, 0x821f) },
100
101 /* Apple MacBookPro8,2 */
102 { USB_DEVICE(0x05ac, 0x821a) },
103
104 /* Apple MacMini5,1 */
105 { USB_DEVICE(0x05ac, 0x8281) },
106
107 /* AVM BlueFRITZ! USB v2.0 */
108 { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
109
110 /* Bluetooth Ultraport Module from IBM */
111 { USB_DEVICE(0x04bf, 0x030a) },
112
113 /* ALPS Modules with non-standard id */
114 { USB_DEVICE(0x044e, 0x3001) },
115 { USB_DEVICE(0x044e, 0x3002) },
116
117 /* Ericsson with non-standard id */
118 { USB_DEVICE(0x0bdb, 0x1002) },
119
120 /* Canyon CN-BTU1 with HID interfaces */
121 { USB_DEVICE(0x0c10, 0x0000) },
122
123 /* Broadcom BCM20702A0 */
124 { USB_DEVICE(0x413c, 0x8197) },
125
126 /* Broadcom BCM20702B0 (Dynex/Insignia) */
127 { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
128
129 /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
130 { USB_DEVICE(0x105b, 0xe065), .driver_info = BTUSB_BCM_PATCHRAM },
131
132 /* Foxconn - Hon Hai */
133 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
134 .driver_info = BTUSB_BCM_PATCHRAM },
135
136 /* Lite-On Technology - Broadcom based */
137 { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
138 .driver_info = BTUSB_BCM_PATCHRAM },
139
140 /* Broadcom devices with vendor specific id */
141 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
142 .driver_info = BTUSB_BCM_PATCHRAM },
143
144 /* ASUSTek Computer - Broadcom based */
145 { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
146 .driver_info = BTUSB_BCM_PATCHRAM },
147
148 /* Belkin F8065bf - Broadcom based */
149 { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
150 .driver_info = BTUSB_BCM_PATCHRAM },
151
152 /* IMC Networks - Broadcom based */
153 { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
154 .driver_info = BTUSB_BCM_PATCHRAM },
155
156 /* Toshiba Corp - Broadcom based */
157 { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
158 .driver_info = BTUSB_BCM_PATCHRAM },
159
160 /* Intel Bluetooth USB Bootloader (RAM module) */
161 { USB_DEVICE(0x8087, 0x0a5a),
162 .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
163
164 { } /* Terminating entry */
165 };
166
167 MODULE_DEVICE_TABLE(usb, btusb_table);
168
169 static const struct usb_device_id blacklist_table[] = {
170 /* CSR BlueCore devices */
171 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
172
173 /* Broadcom BCM2033 without firmware */
174 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
175
176 /* Broadcom BCM2045 devices */
177 { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
178
179 /* Atheros 3011 with sflash firmware */
180 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
181 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
182 { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
183 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
184 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
185 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
186 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
187
188 /* Atheros AR9285 Malbec with sflash firmware */
189 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
190
191 /* Atheros 3012 with sflash firmware */
192 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
193 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
194 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
195 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
196 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
197 { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
198 { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
199 { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
200 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
201 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
202 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
203 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
204 { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
205 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
206 { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
207 { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
208 { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
209 { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
210 { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
211 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
212 { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
213 { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
214 { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
215 { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
216 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
217 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
218 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
219 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
220 { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
221 { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
222 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
223 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
224 { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
225 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
226 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
227 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
228 { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
229 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
230 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
231 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
232 { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
233 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
234 { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
235 { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
236 { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
237 { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
238 { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
239 { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
240 { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
241
242 /* Atheros AR5BBU12 with sflash firmware */
243 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
244
245 /* Atheros AR5BBU12 with sflash firmware */
246 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
247 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
248
249 /* QCA ROME chipset */
250 { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
251 { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
252 { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
253 { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME },
254
255 /* Broadcom BCM2035 */
256 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
257 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
258 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
259
260 /* Broadcom BCM2045 */
261 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
262 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
263
264 /* IBM/Lenovo ThinkPad with Broadcom chip */
265 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
266 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
267
268 /* HP laptop with Broadcom chip */
269 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
270
271 /* Dell laptop with Broadcom chip */
272 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
273
274 /* Dell Wireless 370 and 410 devices */
275 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
276 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
277
278 /* Belkin F8T012 and F8T013 devices */
279 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
280 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
281
282 /* Asus WL-BTD202 device */
283 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
284
285 /* Kensington Bluetooth USB adapter */
286 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
287
288 /* RTX Telecom based adapters with buggy SCO support */
289 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
290 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
291
292 /* CONWISE Technology based adapters with buggy SCO support */
293 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
294
295 /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
296 { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
297
298 /* Digianswer devices */
299 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
300 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
301
302 /* CSR BlueCore Bluetooth Sniffer */
303 { USB_DEVICE(0x0a12, 0x0002),
304 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
305
306 /* Frontline ComProbe Bluetooth Sniffer */
307 { USB_DEVICE(0x16d3, 0x0002),
308 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
309
310 /* Marvell Bluetooth devices */
311 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
312 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
313
314 /* Intel Bluetooth devices */
315 { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
316 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
317 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
318 { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
319 { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL },
320
321 /* Other Intel Bluetooth devices */
322 { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
323 .driver_info = BTUSB_IGNORE },
324
325 /* Realtek Bluetooth devices */
326 { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
327 .driver_info = BTUSB_REALTEK },
328
329 /* Additional Realtek 8723AE Bluetooth devices */
330 { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
331 { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
332
333 /* Additional Realtek 8723BE Bluetooth devices */
334 { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
335 { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
336 { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
337 { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
338 { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
339
340 /* Additional Realtek 8821AE Bluetooth devices */
341 { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
342 { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
343 { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
344 { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
345 { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
346
347 /* Silicon Wave based devices */
348 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
349
350 { } /* Terminating entry */
351 };
352
353 #define BTUSB_MAX_ISOC_FRAMES 10
354
355 #define BTUSB_INTR_RUNNING 0
356 #define BTUSB_BULK_RUNNING 1
357 #define BTUSB_ISOC_RUNNING 2
358 #define BTUSB_SUSPENDING 3
359 #define BTUSB_DID_ISO_RESUME 4
360 #define BTUSB_BOOTLOADER 5
361 #define BTUSB_DOWNLOADING 6
362 #define BTUSB_FIRMWARE_LOADED 7
363 #define BTUSB_FIRMWARE_FAILED 8
364 #define BTUSB_BOOTING 9
365 #define BTUSB_RESET_RESUME 10
366 #define BTUSB_DIAG_RUNNING 11
367
368 struct btusb_data {
369 struct hci_dev *hdev;
370 struct usb_device *udev;
371 struct usb_interface *intf;
372 struct usb_interface *isoc;
373 struct usb_interface *diag;
374
375 unsigned long flags;
376
377 struct work_struct work;
378 struct work_struct waker;
379
380 struct usb_anchor deferred;
381 struct usb_anchor tx_anchor;
382 int tx_in_flight;
383 spinlock_t txlock;
384
385 struct usb_anchor intr_anchor;
386 struct usb_anchor bulk_anchor;
387 struct usb_anchor isoc_anchor;
388 struct usb_anchor diag_anchor;
389 spinlock_t rxlock;
390
391 struct sk_buff *evt_skb;
392 struct sk_buff *acl_skb;
393 struct sk_buff *sco_skb;
394
395 struct usb_endpoint_descriptor *intr_ep;
396 struct usb_endpoint_descriptor *bulk_tx_ep;
397 struct usb_endpoint_descriptor *bulk_rx_ep;
398 struct usb_endpoint_descriptor *isoc_tx_ep;
399 struct usb_endpoint_descriptor *isoc_rx_ep;
400 struct usb_endpoint_descriptor *diag_tx_ep;
401 struct usb_endpoint_descriptor *diag_rx_ep;
402
403 __u8 cmdreq_type;
404 __u8 cmdreq;
405
406 unsigned int sco_num;
407 int isoc_altsetting;
408 int suspend_count;
409
410 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
411 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
412
413 int (*setup_on_usb)(struct hci_dev *hdev);
414 };
415
416 static inline void btusb_free_frags(struct btusb_data *data)
417 {
418 unsigned long flags;
419
420 spin_lock_irqsave(&data->rxlock, flags);
421
422 kfree_skb(data->evt_skb);
423 data->evt_skb = NULL;
424
425 kfree_skb(data->acl_skb);
426 data->acl_skb = NULL;
427
428 kfree_skb(data->sco_skb);
429 data->sco_skb = NULL;
430
431 spin_unlock_irqrestore(&data->rxlock, flags);
432 }
433
434 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
435 {
436 struct sk_buff *skb;
437 int err = 0;
438
439 spin_lock(&data->rxlock);
440 skb = data->evt_skb;
441
442 while (count) {
443 int len;
444
445 if (!skb) {
446 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
447 if (!skb) {
448 err = -ENOMEM;
449 break;
450 }
451
452 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
453 hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
454 }
455
456 len = min_t(uint, hci_skb_expect(skb), count);
457 memcpy(skb_put(skb, len), buffer, len);
458
459 count -= len;
460 buffer += len;
461 hci_skb_expect(skb) -= len;
462
463 if (skb->len == HCI_EVENT_HDR_SIZE) {
464 /* Complete event header */
465 hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
466
467 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
468 kfree_skb(skb);
469 skb = NULL;
470
471 err = -EILSEQ;
472 break;
473 }
474 }
475
476 if (!hci_skb_expect(skb)) {
477 /* Complete frame */
478 data->recv_event(data->hdev, skb);
479 skb = NULL;
480 }
481 }
482
483 data->evt_skb = skb;
484 spin_unlock(&data->rxlock);
485
486 return err;
487 }
488
489 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
490 {
491 struct sk_buff *skb;
492 int err = 0;
493
494 spin_lock(&data->rxlock);
495 skb = data->acl_skb;
496
497 while (count) {
498 int len;
499
500 if (!skb) {
501 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
502 if (!skb) {
503 err = -ENOMEM;
504 break;
505 }
506
507 hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
508 hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
509 }
510
511 len = min_t(uint, hci_skb_expect(skb), count);
512 memcpy(skb_put(skb, len), buffer, len);
513
514 count -= len;
515 buffer += len;
516 hci_skb_expect(skb) -= len;
517
518 if (skb->len == HCI_ACL_HDR_SIZE) {
519 __le16 dlen = hci_acl_hdr(skb)->dlen;
520
521 /* Complete ACL header */
522 hci_skb_expect(skb) = __le16_to_cpu(dlen);
523
524 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
525 kfree_skb(skb);
526 skb = NULL;
527
528 err = -EILSEQ;
529 break;
530 }
531 }
532
533 if (!hci_skb_expect(skb)) {
534 /* Complete frame */
535 hci_recv_frame(data->hdev, skb);
536 skb = NULL;
537 }
538 }
539
540 data->acl_skb = skb;
541 spin_unlock(&data->rxlock);
542
543 return err;
544 }
545
546 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
547 {
548 struct sk_buff *skb;
549 int err = 0;
550
551 spin_lock(&data->rxlock);
552 skb = data->sco_skb;
553
554 while (count) {
555 int len;
556
557 if (!skb) {
558 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
559 if (!skb) {
560 err = -ENOMEM;
561 break;
562 }
563
564 hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
565 hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
566 }
567
568 len = min_t(uint, hci_skb_expect(skb), count);
569 memcpy(skb_put(skb, len), buffer, len);
570
571 count -= len;
572 buffer += len;
573 hci_skb_expect(skb) -= len;
574
575 if (skb->len == HCI_SCO_HDR_SIZE) {
576 /* Complete SCO header */
577 hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
578
579 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
580 kfree_skb(skb);
581 skb = NULL;
582
583 err = -EILSEQ;
584 break;
585 }
586 }
587
588 if (!hci_skb_expect(skb)) {
589 /* Complete frame */
590 hci_recv_frame(data->hdev, skb);
591 skb = NULL;
592 }
593 }
594
595 data->sco_skb = skb;
596 spin_unlock(&data->rxlock);
597
598 return err;
599 }
600
601 static void btusb_intr_complete(struct urb *urb)
602 {
603 struct hci_dev *hdev = urb->context;
604 struct btusb_data *data = hci_get_drvdata(hdev);
605 int err;
606
607 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
608 urb->actual_length);
609
610 if (!test_bit(HCI_RUNNING, &hdev->flags))
611 return;
612
613 if (urb->status == 0) {
614 hdev->stat.byte_rx += urb->actual_length;
615
616 if (btusb_recv_intr(data, urb->transfer_buffer,
617 urb->actual_length) < 0) {
618 BT_ERR("%s corrupted event packet", hdev->name);
619 hdev->stat.err_rx++;
620 }
621 } else if (urb->status == -ENOENT) {
622 /* Avoid suspend failed when usb_kill_urb */
623 return;
624 }
625
626 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
627 return;
628
629 usb_mark_last_busy(data->udev);
630 usb_anchor_urb(urb, &data->intr_anchor);
631
632 err = usb_submit_urb(urb, GFP_ATOMIC);
633 if (err < 0) {
634 /* -EPERM: urb is being killed;
635 * -ENODEV: device got disconnected */
636 if (err != -EPERM && err != -ENODEV)
637 BT_ERR("%s urb %p failed to resubmit (%d)",
638 hdev->name, urb, -err);
639 usb_unanchor_urb(urb);
640 }
641 }
642
643 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
644 {
645 struct btusb_data *data = hci_get_drvdata(hdev);
646 struct urb *urb;
647 unsigned char *buf;
648 unsigned int pipe;
649 int err, size;
650
651 BT_DBG("%s", hdev->name);
652
653 if (!data->intr_ep)
654 return -ENODEV;
655
656 urb = usb_alloc_urb(0, mem_flags);
657 if (!urb)
658 return -ENOMEM;
659
660 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
661
662 buf = kmalloc(size, mem_flags);
663 if (!buf) {
664 usb_free_urb(urb);
665 return -ENOMEM;
666 }
667
668 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
669
670 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
671 btusb_intr_complete, hdev, data->intr_ep->bInterval);
672
673 urb->transfer_flags |= URB_FREE_BUFFER;
674
675 usb_anchor_urb(urb, &data->intr_anchor);
676
677 err = usb_submit_urb(urb, mem_flags);
678 if (err < 0) {
679 if (err != -EPERM && err != -ENODEV)
680 BT_ERR("%s urb %p submission failed (%d)",
681 hdev->name, urb, -err);
682 usb_unanchor_urb(urb);
683 }
684
685 usb_free_urb(urb);
686
687 return err;
688 }
689
690 static void btusb_bulk_complete(struct urb *urb)
691 {
692 struct hci_dev *hdev = urb->context;
693 struct btusb_data *data = hci_get_drvdata(hdev);
694 int err;
695
696 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
697 urb->actual_length);
698
699 if (!test_bit(HCI_RUNNING, &hdev->flags))
700 return;
701
702 if (urb->status == 0) {
703 hdev->stat.byte_rx += urb->actual_length;
704
705 if (data->recv_bulk(data, urb->transfer_buffer,
706 urb->actual_length) < 0) {
707 BT_ERR("%s corrupted ACL packet", hdev->name);
708 hdev->stat.err_rx++;
709 }
710 } else if (urb->status == -ENOENT) {
711 /* Avoid suspend failed when usb_kill_urb */
712 return;
713 }
714
715 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
716 return;
717
718 usb_anchor_urb(urb, &data->bulk_anchor);
719 usb_mark_last_busy(data->udev);
720
721 err = usb_submit_urb(urb, GFP_ATOMIC);
722 if (err < 0) {
723 /* -EPERM: urb is being killed;
724 * -ENODEV: device got disconnected */
725 if (err != -EPERM && err != -ENODEV)
726 BT_ERR("%s urb %p failed to resubmit (%d)",
727 hdev->name, urb, -err);
728 usb_unanchor_urb(urb);
729 }
730 }
731
732 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
733 {
734 struct btusb_data *data = hci_get_drvdata(hdev);
735 struct urb *urb;
736 unsigned char *buf;
737 unsigned int pipe;
738 int err, size = HCI_MAX_FRAME_SIZE;
739
740 BT_DBG("%s", hdev->name);
741
742 if (!data->bulk_rx_ep)
743 return -ENODEV;
744
745 urb = usb_alloc_urb(0, mem_flags);
746 if (!urb)
747 return -ENOMEM;
748
749 buf = kmalloc(size, mem_flags);
750 if (!buf) {
751 usb_free_urb(urb);
752 return -ENOMEM;
753 }
754
755 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
756
757 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
758 btusb_bulk_complete, hdev);
759
760 urb->transfer_flags |= URB_FREE_BUFFER;
761
762 usb_mark_last_busy(data->udev);
763 usb_anchor_urb(urb, &data->bulk_anchor);
764
765 err = usb_submit_urb(urb, mem_flags);
766 if (err < 0) {
767 if (err != -EPERM && err != -ENODEV)
768 BT_ERR("%s urb %p submission failed (%d)",
769 hdev->name, urb, -err);
770 usb_unanchor_urb(urb);
771 }
772
773 usb_free_urb(urb);
774
775 return err;
776 }
777
778 static void btusb_isoc_complete(struct urb *urb)
779 {
780 struct hci_dev *hdev = urb->context;
781 struct btusb_data *data = hci_get_drvdata(hdev);
782 int i, err;
783
784 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
785 urb->actual_length);
786
787 if (!test_bit(HCI_RUNNING, &hdev->flags))
788 return;
789
790 if (urb->status == 0) {
791 for (i = 0; i < urb->number_of_packets; i++) {
792 unsigned int offset = urb->iso_frame_desc[i].offset;
793 unsigned int length = urb->iso_frame_desc[i].actual_length;
794
795 if (urb->iso_frame_desc[i].status)
796 continue;
797
798 hdev->stat.byte_rx += length;
799
800 if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
801 length) < 0) {
802 BT_ERR("%s corrupted SCO packet", hdev->name);
803 hdev->stat.err_rx++;
804 }
805 }
806 } else if (urb->status == -ENOENT) {
807 /* Avoid suspend failed when usb_kill_urb */
808 return;
809 }
810
811 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
812 return;
813
814 usb_anchor_urb(urb, &data->isoc_anchor);
815
816 err = usb_submit_urb(urb, GFP_ATOMIC);
817 if (err < 0) {
818 /* -EPERM: urb is being killed;
819 * -ENODEV: device got disconnected */
820 if (err != -EPERM && err != -ENODEV)
821 BT_ERR("%s urb %p failed to resubmit (%d)",
822 hdev->name, urb, -err);
823 usb_unanchor_urb(urb);
824 }
825 }
826
827 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
828 {
829 int i, offset = 0;
830
831 BT_DBG("len %d mtu %d", len, mtu);
832
833 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
834 i++, offset += mtu, len -= mtu) {
835 urb->iso_frame_desc[i].offset = offset;
836 urb->iso_frame_desc[i].length = mtu;
837 }
838
839 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
840 urb->iso_frame_desc[i].offset = offset;
841 urb->iso_frame_desc[i].length = len;
842 i++;
843 }
844
845 urb->number_of_packets = i;
846 }
847
848 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
849 {
850 struct btusb_data *data = hci_get_drvdata(hdev);
851 struct urb *urb;
852 unsigned char *buf;
853 unsigned int pipe;
854 int err, size;
855
856 BT_DBG("%s", hdev->name);
857
858 if (!data->isoc_rx_ep)
859 return -ENODEV;
860
861 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
862 if (!urb)
863 return -ENOMEM;
864
865 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
866 BTUSB_MAX_ISOC_FRAMES;
867
868 buf = kmalloc(size, mem_flags);
869 if (!buf) {
870 usb_free_urb(urb);
871 return -ENOMEM;
872 }
873
874 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
875
876 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
877 hdev, data->isoc_rx_ep->bInterval);
878
879 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
880
881 __fill_isoc_descriptor(urb, size,
882 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
883
884 usb_anchor_urb(urb, &data->isoc_anchor);
885
886 err = usb_submit_urb(urb, mem_flags);
887 if (err < 0) {
888 if (err != -EPERM && err != -ENODEV)
889 BT_ERR("%s urb %p submission failed (%d)",
890 hdev->name, urb, -err);
891 usb_unanchor_urb(urb);
892 }
893
894 usb_free_urb(urb);
895
896 return err;
897 }
898
899 static void btusb_diag_complete(struct urb *urb)
900 {
901 struct hci_dev *hdev = urb->context;
902 struct btusb_data *data = hci_get_drvdata(hdev);
903 int err;
904
905 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
906 urb->actual_length);
907
908 if (urb->status == 0) {
909 struct sk_buff *skb;
910
911 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
912 if (skb) {
913 memcpy(skb_put(skb, urb->actual_length),
914 urb->transfer_buffer, urb->actual_length);
915 hci_recv_diag(hdev, skb);
916 }
917 } else if (urb->status == -ENOENT) {
918 /* Avoid suspend failed when usb_kill_urb */
919 return;
920 }
921
922 if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
923 return;
924
925 usb_anchor_urb(urb, &data->diag_anchor);
926 usb_mark_last_busy(data->udev);
927
928 err = usb_submit_urb(urb, GFP_ATOMIC);
929 if (err < 0) {
930 /* -EPERM: urb is being killed;
931 * -ENODEV: device got disconnected */
932 if (err != -EPERM && err != -ENODEV)
933 BT_ERR("%s urb %p failed to resubmit (%d)",
934 hdev->name, urb, -err);
935 usb_unanchor_urb(urb);
936 }
937 }
938
939 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
940 {
941 struct btusb_data *data = hci_get_drvdata(hdev);
942 struct urb *urb;
943 unsigned char *buf;
944 unsigned int pipe;
945 int err, size = HCI_MAX_FRAME_SIZE;
946
947 BT_DBG("%s", hdev->name);
948
949 if (!data->diag_rx_ep)
950 return -ENODEV;
951
952 urb = usb_alloc_urb(0, mem_flags);
953 if (!urb)
954 return -ENOMEM;
955
956 buf = kmalloc(size, mem_flags);
957 if (!buf) {
958 usb_free_urb(urb);
959 return -ENOMEM;
960 }
961
962 pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
963
964 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
965 btusb_diag_complete, hdev);
966
967 urb->transfer_flags |= URB_FREE_BUFFER;
968
969 usb_mark_last_busy(data->udev);
970 usb_anchor_urb(urb, &data->diag_anchor);
971
972 err = usb_submit_urb(urb, mem_flags);
973 if (err < 0) {
974 if (err != -EPERM && err != -ENODEV)
975 BT_ERR("%s urb %p submission failed (%d)",
976 hdev->name, urb, -err);
977 usb_unanchor_urb(urb);
978 }
979
980 usb_free_urb(urb);
981
982 return err;
983 }
984
985 static void btusb_tx_complete(struct urb *urb)
986 {
987 struct sk_buff *skb = urb->context;
988 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
989 struct btusb_data *data = hci_get_drvdata(hdev);
990
991 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
992 urb->actual_length);
993
994 if (!test_bit(HCI_RUNNING, &hdev->flags))
995 goto done;
996
997 if (!urb->status)
998 hdev->stat.byte_tx += urb->transfer_buffer_length;
999 else
1000 hdev->stat.err_tx++;
1001
1002 done:
1003 spin_lock(&data->txlock);
1004 data->tx_in_flight--;
1005 spin_unlock(&data->txlock);
1006
1007 kfree(urb->setup_packet);
1008
1009 kfree_skb(skb);
1010 }
1011
1012 static void btusb_isoc_tx_complete(struct urb *urb)
1013 {
1014 struct sk_buff *skb = urb->context;
1015 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1016
1017 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1018 urb->actual_length);
1019
1020 if (!test_bit(HCI_RUNNING, &hdev->flags))
1021 goto done;
1022
1023 if (!urb->status)
1024 hdev->stat.byte_tx += urb->transfer_buffer_length;
1025 else
1026 hdev->stat.err_tx++;
1027
1028 done:
1029 kfree(urb->setup_packet);
1030
1031 kfree_skb(skb);
1032 }
1033
1034 static int btusb_open(struct hci_dev *hdev)
1035 {
1036 struct btusb_data *data = hci_get_drvdata(hdev);
1037 int err;
1038
1039 BT_DBG("%s", hdev->name);
1040
1041 /* Patching USB firmware files prior to starting any URBs of HCI path
1042 * It is more safe to use USB bulk channel for downloading USB patch
1043 */
1044 if (data->setup_on_usb) {
1045 err = data->setup_on_usb(hdev);
1046 if (err < 0)
1047 return err;
1048 }
1049
1050 err = usb_autopm_get_interface(data->intf);
1051 if (err < 0)
1052 return err;
1053
1054 data->intf->needs_remote_wakeup = 1;
1055
1056 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1057 goto done;
1058
1059 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1060 if (err < 0)
1061 goto failed;
1062
1063 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1064 if (err < 0) {
1065 usb_kill_anchored_urbs(&data->intr_anchor);
1066 goto failed;
1067 }
1068
1069 set_bit(BTUSB_BULK_RUNNING, &data->flags);
1070 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1071
1072 if (data->diag) {
1073 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1074 set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1075 }
1076
1077 done:
1078 usb_autopm_put_interface(data->intf);
1079 return 0;
1080
1081 failed:
1082 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1083 usb_autopm_put_interface(data->intf);
1084 return err;
1085 }
1086
1087 static void btusb_stop_traffic(struct btusb_data *data)
1088 {
1089 usb_kill_anchored_urbs(&data->intr_anchor);
1090 usb_kill_anchored_urbs(&data->bulk_anchor);
1091 usb_kill_anchored_urbs(&data->isoc_anchor);
1092 usb_kill_anchored_urbs(&data->diag_anchor);
1093 }
1094
1095 static int btusb_close(struct hci_dev *hdev)
1096 {
1097 struct btusb_data *data = hci_get_drvdata(hdev);
1098 int err;
1099
1100 BT_DBG("%s", hdev->name);
1101
1102 cancel_work_sync(&data->work);
1103 cancel_work_sync(&data->waker);
1104
1105 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1106 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1107 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1108 clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1109
1110 btusb_stop_traffic(data);
1111 btusb_free_frags(data);
1112
1113 err = usb_autopm_get_interface(data->intf);
1114 if (err < 0)
1115 goto failed;
1116
1117 data->intf->needs_remote_wakeup = 0;
1118 usb_autopm_put_interface(data->intf);
1119
1120 failed:
1121 usb_scuttle_anchored_urbs(&data->deferred);
1122 return 0;
1123 }
1124
1125 static int btusb_flush(struct hci_dev *hdev)
1126 {
1127 struct btusb_data *data = hci_get_drvdata(hdev);
1128
1129 BT_DBG("%s", hdev->name);
1130
1131 usb_kill_anchored_urbs(&data->tx_anchor);
1132 btusb_free_frags(data);
1133
1134 return 0;
1135 }
1136
1137 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1138 {
1139 struct btusb_data *data = hci_get_drvdata(hdev);
1140 struct usb_ctrlrequest *dr;
1141 struct urb *urb;
1142 unsigned int pipe;
1143
1144 urb = usb_alloc_urb(0, GFP_KERNEL);
1145 if (!urb)
1146 return ERR_PTR(-ENOMEM);
1147
1148 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1149 if (!dr) {
1150 usb_free_urb(urb);
1151 return ERR_PTR(-ENOMEM);
1152 }
1153
1154 dr->bRequestType = data->cmdreq_type;
1155 dr->bRequest = data->cmdreq;
1156 dr->wIndex = 0;
1157 dr->wValue = 0;
1158 dr->wLength = __cpu_to_le16(skb->len);
1159
1160 pipe = usb_sndctrlpipe(data->udev, 0x00);
1161
1162 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1163 skb->data, skb->len, btusb_tx_complete, skb);
1164
1165 skb->dev = (void *)hdev;
1166
1167 return urb;
1168 }
1169
1170 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1171 {
1172 struct btusb_data *data = hci_get_drvdata(hdev);
1173 struct urb *urb;
1174 unsigned int pipe;
1175
1176 if (!data->bulk_tx_ep)
1177 return ERR_PTR(-ENODEV);
1178
1179 urb = usb_alloc_urb(0, GFP_KERNEL);
1180 if (!urb)
1181 return ERR_PTR(-ENOMEM);
1182
1183 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1184
1185 usb_fill_bulk_urb(urb, data->udev, pipe,
1186 skb->data, skb->len, btusb_tx_complete, skb);
1187
1188 skb->dev = (void *)hdev;
1189
1190 return urb;
1191 }
1192
1193 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1194 {
1195 struct btusb_data *data = hci_get_drvdata(hdev);
1196 struct urb *urb;
1197 unsigned int pipe;
1198
1199 if (!data->isoc_tx_ep)
1200 return ERR_PTR(-ENODEV);
1201
1202 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1203 if (!urb)
1204 return ERR_PTR(-ENOMEM);
1205
1206 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1207
1208 usb_fill_int_urb(urb, data->udev, pipe,
1209 skb->data, skb->len, btusb_isoc_tx_complete,
1210 skb, data->isoc_tx_ep->bInterval);
1211
1212 urb->transfer_flags = URB_ISO_ASAP;
1213
1214 __fill_isoc_descriptor(urb, skb->len,
1215 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1216
1217 skb->dev = (void *)hdev;
1218
1219 return urb;
1220 }
1221
1222 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1223 {
1224 struct btusb_data *data = hci_get_drvdata(hdev);
1225 int err;
1226
1227 usb_anchor_urb(urb, &data->tx_anchor);
1228
1229 err = usb_submit_urb(urb, GFP_KERNEL);
1230 if (err < 0) {
1231 if (err != -EPERM && err != -ENODEV)
1232 BT_ERR("%s urb %p submission failed (%d)",
1233 hdev->name, urb, -err);
1234 kfree(urb->setup_packet);
1235 usb_unanchor_urb(urb);
1236 } else {
1237 usb_mark_last_busy(data->udev);
1238 }
1239
1240 usb_free_urb(urb);
1241 return err;
1242 }
1243
1244 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1245 {
1246 struct btusb_data *data = hci_get_drvdata(hdev);
1247 unsigned long flags;
1248 bool suspending;
1249
1250 spin_lock_irqsave(&data->txlock, flags);
1251 suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1252 if (!suspending)
1253 data->tx_in_flight++;
1254 spin_unlock_irqrestore(&data->txlock, flags);
1255
1256 if (!suspending)
1257 return submit_tx_urb(hdev, urb);
1258
1259 usb_anchor_urb(urb, &data->deferred);
1260 schedule_work(&data->waker);
1261
1262 usb_free_urb(urb);
1263 return 0;
1264 }
1265
1266 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1267 {
1268 struct urb *urb;
1269
1270 BT_DBG("%s", hdev->name);
1271
1272 switch (hci_skb_pkt_type(skb)) {
1273 case HCI_COMMAND_PKT:
1274 urb = alloc_ctrl_urb(hdev, skb);
1275 if (IS_ERR(urb))
1276 return PTR_ERR(urb);
1277
1278 hdev->stat.cmd_tx++;
1279 return submit_or_queue_tx_urb(hdev, urb);
1280
1281 case HCI_ACLDATA_PKT:
1282 urb = alloc_bulk_urb(hdev, skb);
1283 if (IS_ERR(urb))
1284 return PTR_ERR(urb);
1285
1286 hdev->stat.acl_tx++;
1287 return submit_or_queue_tx_urb(hdev, urb);
1288
1289 case HCI_SCODATA_PKT:
1290 if (hci_conn_num(hdev, SCO_LINK) < 1)
1291 return -ENODEV;
1292
1293 urb = alloc_isoc_urb(hdev, skb);
1294 if (IS_ERR(urb))
1295 return PTR_ERR(urb);
1296
1297 hdev->stat.sco_tx++;
1298 return submit_tx_urb(hdev, urb);
1299 }
1300
1301 return -EILSEQ;
1302 }
1303
1304 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1305 {
1306 struct btusb_data *data = hci_get_drvdata(hdev);
1307
1308 BT_DBG("%s evt %d", hdev->name, evt);
1309
1310 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1311 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1312 schedule_work(&data->work);
1313 }
1314 }
1315
1316 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1317 {
1318 struct btusb_data *data = hci_get_drvdata(hdev);
1319 struct usb_interface *intf = data->isoc;
1320 struct usb_endpoint_descriptor *ep_desc;
1321 int i, err;
1322
1323 if (!data->isoc)
1324 return -ENODEV;
1325
1326 err = usb_set_interface(data->udev, 1, altsetting);
1327 if (err < 0) {
1328 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1329 return err;
1330 }
1331
1332 data->isoc_altsetting = altsetting;
1333
1334 data->isoc_tx_ep = NULL;
1335 data->isoc_rx_ep = NULL;
1336
1337 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1338 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1339
1340 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1341 data->isoc_tx_ep = ep_desc;
1342 continue;
1343 }
1344
1345 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1346 data->isoc_rx_ep = ep_desc;
1347 continue;
1348 }
1349 }
1350
1351 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1352 BT_ERR("%s invalid SCO descriptors", hdev->name);
1353 return -ENODEV;
1354 }
1355
1356 return 0;
1357 }
1358
1359 static void btusb_work(struct work_struct *work)
1360 {
1361 struct btusb_data *data = container_of(work, struct btusb_data, work);
1362 struct hci_dev *hdev = data->hdev;
1363 int new_alts;
1364 int err;
1365
1366 if (data->sco_num > 0) {
1367 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1368 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1369 if (err < 0) {
1370 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1371 usb_kill_anchored_urbs(&data->isoc_anchor);
1372 return;
1373 }
1374
1375 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1376 }
1377
1378 if (hdev->voice_setting & 0x0020) {
1379 static const int alts[3] = { 2, 4, 5 };
1380
1381 new_alts = alts[data->sco_num - 1];
1382 } else {
1383 new_alts = data->sco_num;
1384 }
1385
1386 if (data->isoc_altsetting != new_alts) {
1387 unsigned long flags;
1388
1389 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1390 usb_kill_anchored_urbs(&data->isoc_anchor);
1391
1392 /* When isochronous alternate setting needs to be
1393 * changed, because SCO connection has been added
1394 * or removed, a packet fragment may be left in the
1395 * reassembling state. This could lead to wrongly
1396 * assembled fragments.
1397 *
1398 * Clear outstanding fragment when selecting a new
1399 * alternate setting.
1400 */
1401 spin_lock_irqsave(&data->rxlock, flags);
1402 kfree_skb(data->sco_skb);
1403 data->sco_skb = NULL;
1404 spin_unlock_irqrestore(&data->rxlock, flags);
1405
1406 if (__set_isoc_interface(hdev, new_alts) < 0)
1407 return;
1408 }
1409
1410 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1411 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1412 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1413 else
1414 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1415 }
1416 } else {
1417 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1418 usb_kill_anchored_urbs(&data->isoc_anchor);
1419
1420 __set_isoc_interface(hdev, 0);
1421 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1422 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1423 }
1424 }
1425
1426 static void btusb_waker(struct work_struct *work)
1427 {
1428 struct btusb_data *data = container_of(work, struct btusb_data, waker);
1429 int err;
1430
1431 err = usb_autopm_get_interface(data->intf);
1432 if (err < 0)
1433 return;
1434
1435 usb_autopm_put_interface(data->intf);
1436 }
1437
1438 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1439 {
1440 struct sk_buff *skb;
1441 u8 val = 0x00;
1442
1443 BT_DBG("%s", hdev->name);
1444
1445 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1446 if (IS_ERR(skb))
1447 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1448 else
1449 kfree_skb(skb);
1450
1451 return 0;
1452 }
1453
1454 static int btusb_setup_csr(struct hci_dev *hdev)
1455 {
1456 struct hci_rp_read_local_version *rp;
1457 struct sk_buff *skb;
1458
1459 BT_DBG("%s", hdev->name);
1460
1461 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1462 HCI_INIT_TIMEOUT);
1463 if (IS_ERR(skb)) {
1464 int err = PTR_ERR(skb);
1465 BT_ERR("%s: CSR: Local version failed (%d)", hdev->name, err);
1466 return err;
1467 }
1468
1469 if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1470 BT_ERR("%s: CSR: Local version length mismatch", hdev->name);
1471 kfree_skb(skb);
1472 return -EIO;
1473 }
1474
1475 rp = (struct hci_rp_read_local_version *)skb->data;
1476
1477 /* Detect controllers which aren't real CSR ones. */
1478 if (le16_to_cpu(rp->manufacturer) != 10 ||
1479 le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1480 /* Clear the reset quirk since this is not an actual
1481 * early Bluetooth 1.1 device from CSR.
1482 */
1483 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1484
1485 /* These fake CSR controllers have all a broken
1486 * stored link key handling and so just disable it.
1487 */
1488 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1489 }
1490
1491 kfree_skb(skb);
1492
1493 return 0;
1494 }
1495
1496 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1497 struct intel_version *ver)
1498 {
1499 const struct firmware *fw;
1500 char fwname[64];
1501 int ret;
1502
1503 snprintf(fwname, sizeof(fwname),
1504 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1505 ver->hw_platform, ver->hw_variant, ver->hw_revision,
1506 ver->fw_variant, ver->fw_revision, ver->fw_build_num,
1507 ver->fw_build_ww, ver->fw_build_yy);
1508
1509 ret = request_firmware(&fw, fwname, &hdev->dev);
1510 if (ret < 0) {
1511 if (ret == -EINVAL) {
1512 BT_ERR("%s Intel firmware file request failed (%d)",
1513 hdev->name, ret);
1514 return NULL;
1515 }
1516
1517 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1518 hdev->name, fwname, ret);
1519
1520 /* If the correct firmware patch file is not found, use the
1521 * default firmware patch file instead
1522 */
1523 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1524 ver->hw_platform, ver->hw_variant);
1525 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1526 BT_ERR("%s failed to open default Intel fw file: %s",
1527 hdev->name, fwname);
1528 return NULL;
1529 }
1530 }
1531
1532 BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1533
1534 return fw;
1535 }
1536
1537 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1538 const struct firmware *fw,
1539 const u8 **fw_ptr, int *disable_patch)
1540 {
1541 struct sk_buff *skb;
1542 struct hci_command_hdr *cmd;
1543 const u8 *cmd_param;
1544 struct hci_event_hdr *evt = NULL;
1545 const u8 *evt_param = NULL;
1546 int remain = fw->size - (*fw_ptr - fw->data);
1547
1548 /* The first byte indicates the types of the patch command or event.
1549 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1550 * in the current firmware buffer doesn't start with 0x01 or
1551 * the size of remain buffer is smaller than HCI command header,
1552 * the firmware file is corrupted and it should stop the patching
1553 * process.
1554 */
1555 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1556 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1557 return -EINVAL;
1558 }
1559 (*fw_ptr)++;
1560 remain--;
1561
1562 cmd = (struct hci_command_hdr *)(*fw_ptr);
1563 *fw_ptr += sizeof(*cmd);
1564 remain -= sizeof(*cmd);
1565
1566 /* Ensure that the remain firmware data is long enough than the length
1567 * of command parameter. If not, the firmware file is corrupted.
1568 */
1569 if (remain < cmd->plen) {
1570 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1571 return -EFAULT;
1572 }
1573
1574 /* If there is a command that loads a patch in the firmware
1575 * file, then enable the patch upon success, otherwise just
1576 * disable the manufacturer mode, for example patch activation
1577 * is not required when the default firmware patch file is used
1578 * because there are no patch data to load.
1579 */
1580 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1581 *disable_patch = 0;
1582
1583 cmd_param = *fw_ptr;
1584 *fw_ptr += cmd->plen;
1585 remain -= cmd->plen;
1586
1587 /* This reads the expected events when the above command is sent to the
1588 * device. Some vendor commands expects more than one events, for
1589 * example command status event followed by vendor specific event.
1590 * For this case, it only keeps the last expected event. so the command
1591 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1592 * last expected event.
1593 */
1594 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1595 (*fw_ptr)++;
1596 remain--;
1597
1598 evt = (struct hci_event_hdr *)(*fw_ptr);
1599 *fw_ptr += sizeof(*evt);
1600 remain -= sizeof(*evt);
1601
1602 if (remain < evt->plen) {
1603 BT_ERR("%s Intel fw corrupted: invalid evt len",
1604 hdev->name);
1605 return -EFAULT;
1606 }
1607
1608 evt_param = *fw_ptr;
1609 *fw_ptr += evt->plen;
1610 remain -= evt->plen;
1611 }
1612
1613 /* Every HCI commands in the firmware file has its correspond event.
1614 * If event is not found or remain is smaller than zero, the firmware
1615 * file is corrupted.
1616 */
1617 if (!evt || !evt_param || remain < 0) {
1618 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1619 return -EFAULT;
1620 }
1621
1622 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1623 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1624 if (IS_ERR(skb)) {
1625 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1626 hdev->name, cmd->opcode, PTR_ERR(skb));
1627 return PTR_ERR(skb);
1628 }
1629
1630 /* It ensures that the returned event matches the event data read from
1631 * the firmware file. At fist, it checks the length and then
1632 * the contents of the event.
1633 */
1634 if (skb->len != evt->plen) {
1635 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1636 le16_to_cpu(cmd->opcode));
1637 kfree_skb(skb);
1638 return -EFAULT;
1639 }
1640
1641 if (memcmp(skb->data, evt_param, evt->plen)) {
1642 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1643 hdev->name, le16_to_cpu(cmd->opcode));
1644 kfree_skb(skb);
1645 return -EFAULT;
1646 }
1647 kfree_skb(skb);
1648
1649 return 0;
1650 }
1651
1652 static int btusb_setup_intel(struct hci_dev *hdev)
1653 {
1654 struct sk_buff *skb;
1655 const struct firmware *fw;
1656 const u8 *fw_ptr;
1657 int disable_patch, err;
1658 struct intel_version ver;
1659
1660 BT_DBG("%s", hdev->name);
1661
1662 /* The controller has a bug with the first HCI command sent to it
1663 * returning number of completed commands as zero. This would stall the
1664 * command processing in the Bluetooth core.
1665 *
1666 * As a workaround, send HCI Reset command first which will reset the
1667 * number of completed commands and allow normal command processing
1668 * from now on.
1669 */
1670 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1671 if (IS_ERR(skb)) {
1672 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1673 hdev->name, PTR_ERR(skb));
1674 return PTR_ERR(skb);
1675 }
1676 kfree_skb(skb);
1677
1678 /* Read Intel specific controller version first to allow selection of
1679 * which firmware file to load.
1680 *
1681 * The returned information are hardware variant and revision plus
1682 * firmware variant, revision and build number.
1683 */
1684 err = btintel_read_version(hdev, &ver);
1685 if (err)
1686 return err;
1687
1688 BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1689 hdev->name, ver.hw_platform, ver.hw_variant, ver.hw_revision,
1690 ver.fw_variant, ver.fw_revision, ver.fw_build_num,
1691 ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
1692
1693 /* fw_patch_num indicates the version of patch the device currently
1694 * have. If there is no patch data in the device, it is always 0x00.
1695 * So, if it is other than 0x00, no need to patch the device again.
1696 */
1697 if (ver.fw_patch_num) {
1698 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1699 hdev->name, ver.fw_patch_num);
1700 goto complete;
1701 }
1702
1703 /* Opens the firmware patch file based on the firmware version read
1704 * from the controller. If it fails to open the matching firmware
1705 * patch file, it tries to open the default firmware patch file.
1706 * If no patch file is found, allow the device to operate without
1707 * a patch.
1708 */
1709 fw = btusb_setup_intel_get_fw(hdev, &ver);
1710 if (!fw)
1711 goto complete;
1712 fw_ptr = fw->data;
1713
1714 /* Enable the manufacturer mode of the controller.
1715 * Only while this mode is enabled, the driver can download the
1716 * firmware patch data and configuration parameters.
1717 */
1718 err = btintel_enter_mfg(hdev);
1719 if (err) {
1720 release_firmware(fw);
1721 return err;
1722 }
1723
1724 disable_patch = 1;
1725
1726 /* The firmware data file consists of list of Intel specific HCI
1727 * commands and its expected events. The first byte indicates the
1728 * type of the message, either HCI command or HCI event.
1729 *
1730 * It reads the command and its expected event from the firmware file,
1731 * and send to the controller. Once __hci_cmd_sync_ev() returns,
1732 * the returned event is compared with the event read from the firmware
1733 * file and it will continue until all the messages are downloaded to
1734 * the controller.
1735 *
1736 * Once the firmware patching is completed successfully,
1737 * the manufacturer mode is disabled with reset and activating the
1738 * downloaded patch.
1739 *
1740 * If the firmware patching fails, the manufacturer mode is
1741 * disabled with reset and deactivating the patch.
1742 *
1743 * If the default patch file is used, no reset is done when disabling
1744 * the manufacturer.
1745 */
1746 while (fw->size > fw_ptr - fw->data) {
1747 int ret;
1748
1749 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1750 &disable_patch);
1751 if (ret < 0)
1752 goto exit_mfg_deactivate;
1753 }
1754
1755 release_firmware(fw);
1756
1757 if (disable_patch)
1758 goto exit_mfg_disable;
1759
1760 /* Patching completed successfully and disable the manufacturer mode
1761 * with reset and activate the downloaded firmware patches.
1762 */
1763 err = btintel_exit_mfg(hdev, true, true);
1764 if (err)
1765 return err;
1766
1767 BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1768 hdev->name);
1769
1770 goto complete;
1771
1772 exit_mfg_disable:
1773 /* Disable the manufacturer mode without reset */
1774 err = btintel_exit_mfg(hdev, false, false);
1775 if (err)
1776 return err;
1777
1778 BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1779
1780 goto complete;
1781
1782 exit_mfg_deactivate:
1783 release_firmware(fw);
1784
1785 /* Patching failed. Disable the manufacturer mode with reset and
1786 * deactivate the downloaded firmware patches.
1787 */
1788 err = btintel_exit_mfg(hdev, true, false);
1789 if (err)
1790 return err;
1791
1792 BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1793 hdev->name);
1794
1795 complete:
1796 /* Set the event mask for Intel specific vendor events. This enables
1797 * a few extra events that are useful during general operation.
1798 */
1799 btintel_set_event_mask_mfg(hdev, false);
1800
1801 btintel_check_bdaddr(hdev);
1802 return 0;
1803 }
1804
1805 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1806 {
1807 struct sk_buff *skb;
1808 struct hci_event_hdr *hdr;
1809 struct hci_ev_cmd_complete *evt;
1810
1811 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1812 if (!skb)
1813 return -ENOMEM;
1814
1815 hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
1816 hdr->evt = HCI_EV_CMD_COMPLETE;
1817 hdr->plen = sizeof(*evt) + 1;
1818
1819 evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
1820 evt->ncmd = 0x01;
1821 evt->opcode = cpu_to_le16(opcode);
1822
1823 *skb_put(skb, 1) = 0x00;
1824
1825 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
1826
1827 return hci_recv_frame(hdev, skb);
1828 }
1829
1830 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1831 int count)
1832 {
1833 /* When the device is in bootloader mode, then it can send
1834 * events via the bulk endpoint. These events are treated the
1835 * same way as the ones received from the interrupt endpoint.
1836 */
1837 if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1838 return btusb_recv_intr(data, buffer, count);
1839
1840 return btusb_recv_bulk(data, buffer, count);
1841 }
1842
1843 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1844 unsigned int len)
1845 {
1846 const struct intel_bootup *evt = ptr;
1847
1848 if (len != sizeof(*evt))
1849 return;
1850
1851 if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1852 smp_mb__after_atomic();
1853 wake_up_bit(&data->flags, BTUSB_BOOTING);
1854 }
1855 }
1856
1857 static void btusb_intel_secure_send_result(struct btusb_data *data,
1858 const void *ptr, unsigned int len)
1859 {
1860 const struct intel_secure_send_result *evt = ptr;
1861
1862 if (len != sizeof(*evt))
1863 return;
1864
1865 if (evt->result)
1866 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1867
1868 if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1869 test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1870 smp_mb__after_atomic();
1871 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1872 }
1873 }
1874
1875 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1876 {
1877 struct btusb_data *data = hci_get_drvdata(hdev);
1878
1879 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1880 struct hci_event_hdr *hdr = (void *)skb->data;
1881
1882 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1883 hdr->plen > 0) {
1884 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1885 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1886
1887 switch (skb->data[2]) {
1888 case 0x02:
1889 /* When switching to the operational firmware
1890 * the device sends a vendor specific event
1891 * indicating that the bootup completed.
1892 */
1893 btusb_intel_bootup(data, ptr, len);
1894 break;
1895 case 0x06:
1896 /* When the firmware loading completes the
1897 * device sends out a vendor specific event
1898 * indicating the result of the firmware
1899 * loading.
1900 */
1901 btusb_intel_secure_send_result(data, ptr, len);
1902 break;
1903 }
1904 }
1905 }
1906
1907 return hci_recv_frame(hdev, skb);
1908 }
1909
1910 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1911 {
1912 struct btusb_data *data = hci_get_drvdata(hdev);
1913 struct urb *urb;
1914
1915 BT_DBG("%s", hdev->name);
1916
1917 switch (hci_skb_pkt_type(skb)) {
1918 case HCI_COMMAND_PKT:
1919 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1920 struct hci_command_hdr *cmd = (void *)skb->data;
1921 __u16 opcode = le16_to_cpu(cmd->opcode);
1922
1923 /* When in bootloader mode and the command 0xfc09
1924 * is received, it needs to be send down the
1925 * bulk endpoint. So allocate a bulk URB instead.
1926 */
1927 if (opcode == 0xfc09)
1928 urb = alloc_bulk_urb(hdev, skb);
1929 else
1930 urb = alloc_ctrl_urb(hdev, skb);
1931
1932 /* When the 0xfc01 command is issued to boot into
1933 * the operational firmware, it will actually not
1934 * send a command complete event. To keep the flow
1935 * control working inject that event here.
1936 */
1937 if (opcode == 0xfc01)
1938 inject_cmd_complete(hdev, opcode);
1939 } else {
1940 urb = alloc_ctrl_urb(hdev, skb);
1941 }
1942 if (IS_ERR(urb))
1943 return PTR_ERR(urb);
1944
1945 hdev->stat.cmd_tx++;
1946 return submit_or_queue_tx_urb(hdev, urb);
1947
1948 case HCI_ACLDATA_PKT:
1949 urb = alloc_bulk_urb(hdev, skb);
1950 if (IS_ERR(urb))
1951 return PTR_ERR(urb);
1952
1953 hdev->stat.acl_tx++;
1954 return submit_or_queue_tx_urb(hdev, urb);
1955
1956 case HCI_SCODATA_PKT:
1957 if (hci_conn_num(hdev, SCO_LINK) < 1)
1958 return -ENODEV;
1959
1960 urb = alloc_isoc_urb(hdev, skb);
1961 if (IS_ERR(urb))
1962 return PTR_ERR(urb);
1963
1964 hdev->stat.sco_tx++;
1965 return submit_tx_urb(hdev, urb);
1966 }
1967
1968 return -EILSEQ;
1969 }
1970
1971 static int btusb_setup_intel_new(struct hci_dev *hdev)
1972 {
1973 static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
1974 0x00, 0x08, 0x04, 0x00 };
1975 struct btusb_data *data = hci_get_drvdata(hdev);
1976 struct sk_buff *skb;
1977 struct intel_version ver;
1978 struct intel_boot_params *params;
1979 const struct firmware *fw;
1980 const u8 *fw_ptr;
1981 u32 frag_len;
1982 char fwname[64];
1983 ktime_t calltime, delta, rettime;
1984 unsigned long long duration;
1985 int err;
1986
1987 BT_DBG("%s", hdev->name);
1988
1989 calltime = ktime_get();
1990
1991 /* Read the Intel version information to determine if the device
1992 * is in bootloader mode or if it already has operational firmware
1993 * loaded.
1994 */
1995 err = btintel_read_version(hdev, &ver);
1996 if (err)
1997 return err;
1998
1999 /* The hardware platform number has a fixed value of 0x37 and
2000 * for now only accept this single value.
2001 */
2002 if (ver.hw_platform != 0x37) {
2003 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
2004 hdev->name, ver.hw_platform);
2005 return -EINVAL;
2006 }
2007
2008 /* At the moment the iBT 3.0 hardware variants 0x0b (LnP/SfP)
2009 * and 0x0c (WsP) are supported by this firmware loading method.
2010 *
2011 * This check has been put in place to ensure correct forward
2012 * compatibility options when newer hardware variants come along.
2013 */
2014 if (ver.hw_variant != 0x0b && ver.hw_variant != 0x0c) {
2015 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
2016 hdev->name, ver.hw_variant);
2017 return -EINVAL;
2018 }
2019
2020 btintel_version_info(hdev, &ver);
2021
2022 /* The firmware variant determines if the device is in bootloader
2023 * mode or is running operational firmware. The value 0x06 identifies
2024 * the bootloader and the value 0x23 identifies the operational
2025 * firmware.
2026 *
2027 * When the operational firmware is already present, then only
2028 * the check for valid Bluetooth device address is needed. This
2029 * determines if the device will be added as configured or
2030 * unconfigured controller.
2031 *
2032 * It is not possible to use the Secure Boot Parameters in this
2033 * case since that command is only available in bootloader mode.
2034 */
2035 if (ver.fw_variant == 0x23) {
2036 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2037 btintel_check_bdaddr(hdev);
2038 return 0;
2039 }
2040
2041 /* If the device is not in bootloader mode, then the only possible
2042 * choice is to return an error and abort the device initialization.
2043 */
2044 if (ver.fw_variant != 0x06) {
2045 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2046 hdev->name, ver.fw_variant);
2047 return -ENODEV;
2048 }
2049
2050 /* Read the secure boot parameters to identify the operating
2051 * details of the bootloader.
2052 */
2053 skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2054 if (IS_ERR(skb)) {
2055 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2056 hdev->name, PTR_ERR(skb));
2057 return PTR_ERR(skb);
2058 }
2059
2060 if (skb->len != sizeof(*params)) {
2061 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2062 kfree_skb(skb);
2063 return -EILSEQ;
2064 }
2065
2066 params = (struct intel_boot_params *)skb->data;
2067
2068 BT_INFO("%s: Device revision is %u", hdev->name,
2069 le16_to_cpu(params->dev_revid));
2070
2071 BT_INFO("%s: Secure boot is %s", hdev->name,
2072 params->secure_boot ? "enabled" : "disabled");
2073
2074 BT_INFO("%s: OTP lock is %s", hdev->name,
2075 params->otp_lock ? "enabled" : "disabled");
2076
2077 BT_INFO("%s: API lock is %s", hdev->name,
2078 params->api_lock ? "enabled" : "disabled");
2079
2080 BT_INFO("%s: Debug lock is %s", hdev->name,
2081 params->debug_lock ? "enabled" : "disabled");
2082
2083 BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2084 params->min_fw_build_nn, params->min_fw_build_cw,
2085 2000 + params->min_fw_build_yy);
2086
2087 /* It is required that every single firmware fragment is acknowledged
2088 * with a command complete event. If the boot parameters indicate
2089 * that this bootloader does not send them, then abort the setup.
2090 */
2091 if (params->limited_cce != 0x00) {
2092 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2093 hdev->name, params->limited_cce);
2094 kfree_skb(skb);
2095 return -EINVAL;
2096 }
2097
2098 /* If the OTP has no valid Bluetooth device address, then there will
2099 * also be no valid address for the operational firmware.
2100 */
2101 if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2102 BT_INFO("%s: No device address configured", hdev->name);
2103 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2104 }
2105
2106 /* With this Intel bootloader only the hardware variant and device
2107 * revision information are used to select the right firmware.
2108 *
2109 * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2110 *
2111 * Currently the supported hardware variants are:
2112 * 11 (0x0b) for iBT3.0 (LnP/SfP)
2113 * 12 (0x0c) for iBT3.5 (WsP)
2114 */
2115 snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.sfi",
2116 le16_to_cpu(ver.hw_variant),
2117 le16_to_cpu(params->dev_revid));
2118
2119 err = request_firmware(&fw, fwname, &hdev->dev);
2120 if (err < 0) {
2121 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2122 hdev->name, err);
2123 kfree_skb(skb);
2124 return err;
2125 }
2126
2127 BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2128
2129 /* Save the DDC file name for later use to apply once the firmware
2130 * downloading is done.
2131 */
2132 snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.ddc",
2133 le16_to_cpu(ver.hw_variant),
2134 le16_to_cpu(params->dev_revid));
2135
2136 kfree_skb(skb);
2137
2138 if (fw->size < 644) {
2139 BT_ERR("%s: Invalid size of firmware file (%zu)",
2140 hdev->name, fw->size);
2141 err = -EBADF;
2142 goto done;
2143 }
2144
2145 set_bit(BTUSB_DOWNLOADING, &data->flags);
2146
2147 /* Start the firmware download transaction with the Init fragment
2148 * represented by the 128 bytes of CSS header.
2149 */
2150 err = btintel_secure_send(hdev, 0x00, 128, fw->data);
2151 if (err < 0) {
2152 BT_ERR("%s: Failed to send firmware header (%d)",
2153 hdev->name, err);
2154 goto done;
2155 }
2156
2157 /* Send the 256 bytes of public key information from the firmware
2158 * as the PKey fragment.
2159 */
2160 err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128);
2161 if (err < 0) {
2162 BT_ERR("%s: Failed to send firmware public key (%d)",
2163 hdev->name, err);
2164 goto done;
2165 }
2166
2167 /* Send the 256 bytes of signature information from the firmware
2168 * as the Sign fragment.
2169 */
2170 err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388);
2171 if (err < 0) {
2172 BT_ERR("%s: Failed to send firmware signature (%d)",
2173 hdev->name, err);
2174 goto done;
2175 }
2176
2177 fw_ptr = fw->data + 644;
2178 frag_len = 0;
2179
2180 while (fw_ptr - fw->data < fw->size) {
2181 struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
2182
2183 frag_len += sizeof(*cmd) + cmd->plen;
2184
2185 /* The parameter length of the secure send command requires
2186 * a 4 byte alignment. It happens so that the firmware file
2187 * contains proper Intel_NOP commands to align the fragments
2188 * as needed.
2189 *
2190 * Send set of commands with 4 byte alignment from the
2191 * firmware data buffer as a single Data fragement.
2192 */
2193 if (!(frag_len % 4)) {
2194 err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr);
2195 if (err < 0) {
2196 BT_ERR("%s: Failed to send firmware data (%d)",
2197 hdev->name, err);
2198 goto done;
2199 }
2200
2201 fw_ptr += frag_len;
2202 frag_len = 0;
2203 }
2204 }
2205
2206 set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2207
2208 BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2209
2210 /* Before switching the device into operational mode and with that
2211 * booting the loaded firmware, wait for the bootloader notification
2212 * that all fragments have been successfully received.
2213 *
2214 * When the event processing receives the notification, then the
2215 * BTUSB_DOWNLOADING flag will be cleared.
2216 *
2217 * The firmware loading should not take longer than 5 seconds
2218 * and thus just timeout if that happens and fail the setup
2219 * of this device.
2220 */
2221 err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2222 TASK_INTERRUPTIBLE,
2223 msecs_to_jiffies(5000));
2224 if (err == 1) {
2225 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2226 err = -EINTR;
2227 goto done;
2228 }
2229
2230 if (err) {
2231 BT_ERR("%s: Firmware loading timeout", hdev->name);
2232 err = -ETIMEDOUT;
2233 goto done;
2234 }
2235
2236 if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2237 BT_ERR("%s: Firmware loading failed", hdev->name);
2238 err = -ENOEXEC;
2239 goto done;
2240 }
2241
2242 rettime = ktime_get();
2243 delta = ktime_sub(rettime, calltime);
2244 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2245
2246 BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2247
2248 done:
2249 release_firmware(fw);
2250
2251 if (err < 0)
2252 return err;
2253
2254 calltime = ktime_get();
2255
2256 set_bit(BTUSB_BOOTING, &data->flags);
2257
2258 skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2259 HCI_INIT_TIMEOUT);
2260 if (IS_ERR(skb))
2261 return PTR_ERR(skb);
2262
2263 kfree_skb(skb);
2264
2265 /* The bootloader will not indicate when the device is ready. This
2266 * is done by the operational firmware sending bootup notification.
2267 *
2268 * Booting into operational firmware should not take longer than
2269 * 1 second. However if that happens, then just fail the setup
2270 * since something went wrong.
2271 */
2272 BT_INFO("%s: Waiting for device to boot", hdev->name);
2273
2274 err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2275 TASK_INTERRUPTIBLE,
2276 msecs_to_jiffies(1000));
2277
2278 if (err == 1) {
2279 BT_ERR("%s: Device boot interrupted", hdev->name);
2280 return -EINTR;
2281 }
2282
2283 if (err) {
2284 BT_ERR("%s: Device boot timeout", hdev->name);
2285 return -ETIMEDOUT;
2286 }
2287
2288 rettime = ktime_get();
2289 delta = ktime_sub(rettime, calltime);
2290 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2291
2292 BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2293
2294 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2295
2296 /* Once the device is running in operational mode, it needs to apply
2297 * the device configuration (DDC) parameters.
2298 *
2299 * The device can work without DDC parameters, so even if it fails
2300 * to load the file, no need to fail the setup.
2301 */
2302 btintel_load_ddc_config(hdev, fwname);
2303
2304 /* Set the event mask for Intel specific vendor events. This enables
2305 * a few extra events that are useful during general operation. It
2306 * does not enable any debugging related events.
2307 *
2308 * The device will function correctly without these events enabled
2309 * and thus no need to fail the setup.
2310 */
2311 btintel_set_event_mask(hdev, false);
2312
2313 return 0;
2314 }
2315
2316 static int btusb_shutdown_intel(struct hci_dev *hdev)
2317 {
2318 struct sk_buff *skb;
2319 long ret;
2320
2321 /* Some platforms have an issue with BT LED when the interface is
2322 * down or BT radio is turned off, which takes 5 seconds to BT LED
2323 * goes off. This command turns off the BT LED immediately.
2324 */
2325 skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2326 if (IS_ERR(skb)) {
2327 ret = PTR_ERR(skb);
2328 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2329 hdev->name, ret);
2330 return ret;
2331 }
2332 kfree_skb(skb);
2333
2334 return 0;
2335 }
2336
2337 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2338 const bdaddr_t *bdaddr)
2339 {
2340 struct sk_buff *skb;
2341 u8 buf[8];
2342 long ret;
2343
2344 buf[0] = 0xfe;
2345 buf[1] = sizeof(bdaddr_t);
2346 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2347
2348 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2349 if (IS_ERR(skb)) {
2350 ret = PTR_ERR(skb);
2351 BT_ERR("%s: changing Marvell device address failed (%ld)",
2352 hdev->name, ret);
2353 return ret;
2354 }
2355 kfree_skb(skb);
2356
2357 return 0;
2358 }
2359
2360 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2361 const bdaddr_t *bdaddr)
2362 {
2363 struct sk_buff *skb;
2364 u8 buf[10];
2365 long ret;
2366
2367 buf[0] = 0x01;
2368 buf[1] = 0x01;
2369 buf[2] = 0x00;
2370 buf[3] = sizeof(bdaddr_t);
2371 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2372
2373 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2374 if (IS_ERR(skb)) {
2375 ret = PTR_ERR(skb);
2376 BT_ERR("%s: Change address command failed (%ld)",
2377 hdev->name, ret);
2378 return ret;
2379 }
2380 kfree_skb(skb);
2381
2382 return 0;
2383 }
2384
2385 #define QCA_DFU_PACKET_LEN 4096
2386
2387 #define QCA_GET_TARGET_VERSION 0x09
2388 #define QCA_CHECK_STATUS 0x05
2389 #define QCA_DFU_DOWNLOAD 0x01
2390
2391 #define QCA_SYSCFG_UPDATED 0x40
2392 #define QCA_PATCH_UPDATED 0x80
2393 #define QCA_DFU_TIMEOUT 3000
2394
2395 struct qca_version {
2396 __le32 rom_version;
2397 __le32 patch_version;
2398 __le32 ram_version;
2399 __le32 ref_clock;
2400 __u8 reserved[4];
2401 } __packed;
2402
2403 struct qca_rampatch_version {
2404 __le16 rom_version;
2405 __le16 patch_version;
2406 } __packed;
2407
2408 struct qca_device_info {
2409 u32 rom_version;
2410 u8 rampatch_hdr; /* length of header in rampatch */
2411 u8 nvm_hdr; /* length of header in NVM */
2412 u8 ver_offset; /* offset of version structure in rampatch */
2413 };
2414
2415 static const struct qca_device_info qca_devices_table[] = {
2416 { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2417 { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2418 { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2419 { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2420 { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2421 { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2422 };
2423
2424 static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request,
2425 void *data, u16 size)
2426 {
2427 struct btusb_data *btdata = hci_get_drvdata(hdev);
2428 struct usb_device *udev = btdata->udev;
2429 int pipe, err;
2430 u8 *buf;
2431
2432 buf = kmalloc(size, GFP_KERNEL);
2433 if (!buf)
2434 return -ENOMEM;
2435
2436 /* Found some of USB hosts have IOT issues with ours so that we should
2437 * not wait until HCI layer is ready.
2438 */
2439 pipe = usb_rcvctrlpipe(udev, 0);
2440 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2441 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2442 if (err < 0) {
2443 BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err);
2444 goto done;
2445 }
2446
2447 memcpy(data, buf, size);
2448
2449 done:
2450 kfree(buf);
2451
2452 return err;
2453 }
2454
2455 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2456 const struct firmware *firmware,
2457 size_t hdr_size)
2458 {
2459 struct btusb_data *btdata = hci_get_drvdata(hdev);
2460 struct usb_device *udev = btdata->udev;
2461 size_t count, size, sent = 0;
2462 int pipe, len, err;
2463 u8 *buf;
2464
2465 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2466 if (!buf)
2467 return -ENOMEM;
2468
2469 count = firmware->size;
2470
2471 size = min_t(size_t, count, hdr_size);
2472 memcpy(buf, firmware->data, size);
2473
2474 /* USB patches should go down to controller through USB path
2475 * because binary format fits to go down through USB channel.
2476 * USB control path is for patching headers and USB bulk is for
2477 * patch body.
2478 */
2479 pipe = usb_sndctrlpipe(udev, 0);
2480 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2481 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2482 if (err < 0) {
2483 BT_ERR("%s: Failed to send headers (%d)", hdev->name, err);
2484 goto done;
2485 }
2486
2487 sent += size;
2488 count -= size;
2489
2490 while (count) {
2491 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2492
2493 memcpy(buf, firmware->data + sent, size);
2494
2495 pipe = usb_sndbulkpipe(udev, 0x02);
2496 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2497 QCA_DFU_TIMEOUT);
2498 if (err < 0) {
2499 BT_ERR("%s: Failed to send body at %zd of %zd (%d)",
2500 hdev->name, sent, firmware->size, err);
2501 break;
2502 }
2503
2504 if (size != len) {
2505 BT_ERR("%s: Failed to get bulk buffer", hdev->name);
2506 err = -EILSEQ;
2507 break;
2508 }
2509
2510 sent += size;
2511 count -= size;
2512 }
2513
2514 done:
2515 kfree(buf);
2516 return err;
2517 }
2518
2519 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2520 struct qca_version *ver,
2521 const struct qca_device_info *info)
2522 {
2523 struct qca_rampatch_version *rver;
2524 const struct firmware *fw;
2525 u32 ver_rom, ver_patch;
2526 u16 rver_rom, rver_patch;
2527 char fwname[64];
2528 int err;
2529
2530 ver_rom = le32_to_cpu(ver->rom_version);
2531 ver_patch = le32_to_cpu(ver->patch_version);
2532
2533 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2534
2535 err = request_firmware(&fw, fwname, &hdev->dev);
2536 if (err) {
2537 BT_ERR("%s: failed to request rampatch file: %s (%d)",
2538 hdev->name, fwname, err);
2539 return err;
2540 }
2541
2542 BT_INFO("%s: using rampatch file: %s", hdev->name, fwname);
2543
2544 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2545 rver_rom = le16_to_cpu(rver->rom_version);
2546 rver_patch = le16_to_cpu(rver->patch_version);
2547
2548 BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x "
2549 "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom,
2550 ver_patch);
2551
2552 if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2553 BT_ERR("%s: rampatch file version did not match with firmware",
2554 hdev->name);
2555 err = -EINVAL;
2556 goto done;
2557 }
2558
2559 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2560
2561 done:
2562 release_firmware(fw);
2563
2564 return err;
2565 }
2566
2567 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2568 struct qca_version *ver,
2569 const struct qca_device_info *info)
2570 {
2571 const struct firmware *fw;
2572 char fwname[64];
2573 int err;
2574
2575 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2576 le32_to_cpu(ver->rom_version));
2577
2578 err = request_firmware(&fw, fwname, &hdev->dev);
2579 if (err) {
2580 BT_ERR("%s: failed to request NVM file: %s (%d)",
2581 hdev->name, fwname, err);
2582 return err;
2583 }
2584
2585 BT_INFO("%s: using NVM file: %s", hdev->name, fwname);
2586
2587 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2588
2589 release_firmware(fw);
2590
2591 return err;
2592 }
2593
2594 static int btusb_setup_qca(struct hci_dev *hdev)
2595 {
2596 const struct qca_device_info *info = NULL;
2597 struct qca_version ver;
2598 u32 ver_rom;
2599 u8 status;
2600 int i, err;
2601
2602 err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver,
2603 sizeof(ver));
2604 if (err < 0)
2605 return err;
2606
2607 ver_rom = le32_to_cpu(ver.rom_version);
2608 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2609 if (ver_rom == qca_devices_table[i].rom_version)
2610 info = &qca_devices_table[i];
2611 }
2612 if (!info) {
2613 BT_ERR("%s: don't support firmware rome 0x%x", hdev->name,
2614 ver_rom);
2615 return -ENODEV;
2616 }
2617
2618 err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status,
2619 sizeof(status));
2620 if (err < 0)
2621 return err;
2622
2623 if (!(status & QCA_PATCH_UPDATED)) {
2624 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2625 if (err < 0)
2626 return err;
2627 }
2628
2629 if (!(status & QCA_SYSCFG_UPDATED)) {
2630 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2631 if (err < 0)
2632 return err;
2633 }
2634
2635 return 0;
2636 }
2637
2638 #ifdef CONFIG_BT_HCIBTUSB_BCM
2639 static inline int __set_diag_interface(struct hci_dev *hdev)
2640 {
2641 struct btusb_data *data = hci_get_drvdata(hdev);
2642 struct usb_interface *intf = data->diag;
2643 int i;
2644
2645 if (!data->diag)
2646 return -ENODEV;
2647
2648 data->diag_tx_ep = NULL;
2649 data->diag_rx_ep = NULL;
2650
2651 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2652 struct usb_endpoint_descriptor *ep_desc;
2653
2654 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2655
2656 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2657 data->diag_tx_ep = ep_desc;
2658 continue;
2659 }
2660
2661 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2662 data->diag_rx_ep = ep_desc;
2663 continue;
2664 }
2665 }
2666
2667 if (!data->diag_tx_ep || !data->diag_rx_ep) {
2668 BT_ERR("%s invalid diagnostic descriptors", hdev->name);
2669 return -ENODEV;
2670 }
2671
2672 return 0;
2673 }
2674
2675 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
2676 {
2677 struct btusb_data *data = hci_get_drvdata(hdev);
2678 struct sk_buff *skb;
2679 struct urb *urb;
2680 unsigned int pipe;
2681
2682 if (!data->diag_tx_ep)
2683 return ERR_PTR(-ENODEV);
2684
2685 urb = usb_alloc_urb(0, GFP_KERNEL);
2686 if (!urb)
2687 return ERR_PTR(-ENOMEM);
2688
2689 skb = bt_skb_alloc(2, GFP_KERNEL);
2690 if (!skb) {
2691 usb_free_urb(urb);
2692 return ERR_PTR(-ENOMEM);
2693 }
2694
2695 *skb_put(skb, 1) = 0xf0;
2696 *skb_put(skb, 1) = enable;
2697
2698 pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
2699
2700 usb_fill_bulk_urb(urb, data->udev, pipe,
2701 skb->data, skb->len, btusb_tx_complete, skb);
2702
2703 skb->dev = (void *)hdev;
2704
2705 return urb;
2706 }
2707
2708 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
2709 {
2710 struct btusb_data *data = hci_get_drvdata(hdev);
2711 struct urb *urb;
2712
2713 if (!data->diag)
2714 return -ENODEV;
2715
2716 if (!test_bit(HCI_RUNNING, &hdev->flags))
2717 return -ENETDOWN;
2718
2719 urb = alloc_diag_urb(hdev, enable);
2720 if (IS_ERR(urb))
2721 return PTR_ERR(urb);
2722
2723 return submit_or_queue_tx_urb(hdev, urb);
2724 }
2725 #endif
2726
2727 static int btusb_probe(struct usb_interface *intf,
2728 const struct usb_device_id *id)
2729 {
2730 struct usb_endpoint_descriptor *ep_desc;
2731 struct btusb_data *data;
2732 struct hci_dev *hdev;
2733 unsigned ifnum_base;
2734 int i, err;
2735
2736 BT_DBG("intf %p id %p", intf, id);
2737
2738 /* interface numbers are hardcoded in the spec */
2739 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
2740 if (!(id->driver_info & BTUSB_IFNUM_2))
2741 return -ENODEV;
2742 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
2743 return -ENODEV;
2744 }
2745
2746 ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
2747
2748 if (!id->driver_info) {
2749 const struct usb_device_id *match;
2750
2751 match = usb_match_id(intf, blacklist_table);
2752 if (match)
2753 id = match;
2754 }
2755
2756 if (id->driver_info == BTUSB_IGNORE)
2757 return -ENODEV;
2758
2759 if (id->driver_info & BTUSB_ATH3012) {
2760 struct usb_device *udev = interface_to_usbdev(intf);
2761
2762 /* Old firmware would otherwise let ath3k driver load
2763 * patch and sysconfig files */
2764 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2765 return -ENODEV;
2766 }
2767
2768 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2769 if (!data)
2770 return -ENOMEM;
2771
2772 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2773 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2774
2775 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2776 data->intr_ep = ep_desc;
2777 continue;
2778 }
2779
2780 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2781 data->bulk_tx_ep = ep_desc;
2782 continue;
2783 }
2784
2785 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2786 data->bulk_rx_ep = ep_desc;
2787 continue;
2788 }
2789 }
2790
2791 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2792 return -ENODEV;
2793
2794 if (id->driver_info & BTUSB_AMP) {
2795 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2796 data->cmdreq = 0x2b;
2797 } else {
2798 data->cmdreq_type = USB_TYPE_CLASS;
2799 data->cmdreq = 0x00;
2800 }
2801
2802 data->udev = interface_to_usbdev(intf);
2803 data->intf = intf;
2804
2805 INIT_WORK(&data->work, btusb_work);
2806 INIT_WORK(&data->waker, btusb_waker);
2807 init_usb_anchor(&data->deferred);
2808 init_usb_anchor(&data->tx_anchor);
2809 spin_lock_init(&data->txlock);
2810
2811 init_usb_anchor(&data->intr_anchor);
2812 init_usb_anchor(&data->bulk_anchor);
2813 init_usb_anchor(&data->isoc_anchor);
2814 init_usb_anchor(&data->diag_anchor);
2815 spin_lock_init(&data->rxlock);
2816
2817 if (id->driver_info & BTUSB_INTEL_NEW) {
2818 data->recv_event = btusb_recv_event_intel;
2819 data->recv_bulk = btusb_recv_bulk_intel;
2820 set_bit(BTUSB_BOOTLOADER, &data->flags);
2821 } else {
2822 data->recv_event = hci_recv_frame;
2823 data->recv_bulk = btusb_recv_bulk;
2824 }
2825
2826 hdev = hci_alloc_dev();
2827 if (!hdev)
2828 return -ENOMEM;
2829
2830 hdev->bus = HCI_USB;
2831 hci_set_drvdata(hdev, data);
2832
2833 if (id->driver_info & BTUSB_AMP)
2834 hdev->dev_type = HCI_AMP;
2835 else
2836 hdev->dev_type = HCI_PRIMARY;
2837
2838 data->hdev = hdev;
2839
2840 SET_HCIDEV_DEV(hdev, &intf->dev);
2841
2842 hdev->open = btusb_open;
2843 hdev->close = btusb_close;
2844 hdev->flush = btusb_flush;
2845 hdev->send = btusb_send_frame;
2846 hdev->notify = btusb_notify;
2847
2848 if (id->driver_info & BTUSB_BCM2045)
2849 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2850
2851 if (id->driver_info & BTUSB_BCM92035)
2852 hdev->setup = btusb_setup_bcm92035;
2853
2854 #ifdef CONFIG_BT_HCIBTUSB_BCM
2855 if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2856 hdev->manufacturer = 15;
2857 hdev->setup = btbcm_setup_patchram;
2858 hdev->set_diag = btusb_bcm_set_diag;
2859 hdev->set_bdaddr = btbcm_set_bdaddr;
2860
2861 /* Broadcom LM_DIAG Interface numbers are hardcoded */
2862 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
2863 }
2864
2865 if (id->driver_info & BTUSB_BCM_APPLE) {
2866 hdev->manufacturer = 15;
2867 hdev->setup = btbcm_setup_apple;
2868 hdev->set_diag = btusb_bcm_set_diag;
2869
2870 /* Broadcom LM_DIAG Interface numbers are hardcoded */
2871 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
2872 }
2873 #endif
2874
2875 if (id->driver_info & BTUSB_INTEL) {
2876 hdev->manufacturer = 2;
2877 hdev->setup = btusb_setup_intel;
2878 hdev->shutdown = btusb_shutdown_intel;
2879 hdev->set_diag = btintel_set_diag_mfg;
2880 hdev->set_bdaddr = btintel_set_bdaddr;
2881 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2882 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2883 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
2884 }
2885
2886 if (id->driver_info & BTUSB_INTEL_NEW) {
2887 hdev->manufacturer = 2;
2888 hdev->send = btusb_send_frame_intel;
2889 hdev->setup = btusb_setup_intel_new;
2890 hdev->hw_error = btintel_hw_error;
2891 hdev->set_diag = btintel_set_diag;
2892 hdev->set_bdaddr = btintel_set_bdaddr;
2893 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2894 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
2895 }
2896
2897 if (id->driver_info & BTUSB_MARVELL)
2898 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2899
2900 if (id->driver_info & BTUSB_SWAVE) {
2901 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
2902 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
2903 }
2904
2905 if (id->driver_info & BTUSB_INTEL_BOOT) {
2906 hdev->manufacturer = 2;
2907 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2908 }
2909
2910 if (id->driver_info & BTUSB_ATH3012) {
2911 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2912 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2913 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2914 }
2915
2916 if (id->driver_info & BTUSB_QCA_ROME) {
2917 data->setup_on_usb = btusb_setup_qca;
2918 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2919 }
2920
2921 #ifdef CONFIG_BT_HCIBTUSB_RTL
2922 if (id->driver_info & BTUSB_REALTEK) {
2923 hdev->setup = btrtl_setup_realtek;
2924
2925 /* Realtek devices lose their updated firmware over suspend,
2926 * but the USB hub doesn't notice any status change.
2927 * Explicitly request a device reset on resume.
2928 */
2929 set_bit(BTUSB_RESET_RESUME, &data->flags);
2930 }
2931 #endif
2932
2933 if (id->driver_info & BTUSB_AMP) {
2934 /* AMP controllers do not support SCO packets */
2935 data->isoc = NULL;
2936 } else {
2937 /* Interface orders are hardcoded in the specification */
2938 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
2939 }
2940
2941 if (!reset)
2942 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2943
2944 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2945 if (!disable_scofix)
2946 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2947 }
2948
2949 if (id->driver_info & BTUSB_BROKEN_ISOC)
2950 data->isoc = NULL;
2951
2952 if (id->driver_info & BTUSB_DIGIANSWER) {
2953 data->cmdreq_type = USB_TYPE_VENDOR;
2954 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2955 }
2956
2957 if (id->driver_info & BTUSB_CSR) {
2958 struct usb_device *udev = data->udev;
2959 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
2960
2961 /* Old firmware would otherwise execute USB reset */
2962 if (bcdDevice < 0x117)
2963 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2964
2965 /* Fake CSR devices with broken commands */
2966 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
2967 hdev->setup = btusb_setup_csr;
2968
2969 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2970 }
2971
2972 if (id->driver_info & BTUSB_SNIFFER) {
2973 struct usb_device *udev = data->udev;
2974
2975 /* New sniffer firmware has crippled HCI interface */
2976 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
2977 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2978 }
2979
2980 if (id->driver_info & BTUSB_INTEL_BOOT) {
2981 /* A bug in the bootloader causes that interrupt interface is
2982 * only enabled after receiving SetInterface(0, AltSetting=0).
2983 */
2984 err = usb_set_interface(data->udev, 0, 0);
2985 if (err < 0) {
2986 BT_ERR("failed to set interface 0, alt 0 %d", err);
2987 hci_free_dev(hdev);
2988 return err;
2989 }
2990 }
2991
2992 if (data->isoc) {
2993 err = usb_driver_claim_interface(&btusb_driver,
2994 data->isoc, data);
2995 if (err < 0) {
2996 hci_free_dev(hdev);
2997 return err;
2998 }
2999 }
3000
3001 #ifdef CONFIG_BT_HCIBTUSB_BCM
3002 if (data->diag) {
3003 if (!usb_driver_claim_interface(&btusb_driver,
3004 data->diag, data))
3005 __set_diag_interface(hdev);
3006 else
3007 data->diag = NULL;
3008 }
3009 #endif
3010
3011 err = hci_register_dev(hdev);
3012 if (err < 0) {
3013 hci_free_dev(hdev);
3014 return err;
3015 }
3016
3017 usb_set_intfdata(intf, data);
3018
3019 return 0;
3020 }
3021
3022 static void btusb_disconnect(struct usb_interface *intf)
3023 {
3024 struct btusb_data *data = usb_get_intfdata(intf);
3025 struct hci_dev *hdev;
3026
3027 BT_DBG("intf %p", intf);
3028
3029 if (!data)
3030 return;
3031
3032 hdev = data->hdev;
3033 usb_set_intfdata(data->intf, NULL);
3034
3035 if (data->isoc)
3036 usb_set_intfdata(data->isoc, NULL);
3037
3038 if (data->diag)
3039 usb_set_intfdata(data->diag, NULL);
3040
3041 hci_unregister_dev(hdev);
3042
3043 if (intf == data->intf) {
3044 if (data->isoc)
3045 usb_driver_release_interface(&btusb_driver, data->isoc);
3046 if (data->diag)
3047 usb_driver_release_interface(&btusb_driver, data->diag);
3048 } else if (intf == data->isoc) {
3049 if (data->diag)
3050 usb_driver_release_interface(&btusb_driver, data->diag);
3051 usb_driver_release_interface(&btusb_driver, data->intf);
3052 } else if (intf == data->diag) {
3053 usb_driver_release_interface(&btusb_driver, data->intf);
3054 if (data->isoc)
3055 usb_driver_release_interface(&btusb_driver, data->isoc);
3056 }
3057
3058 hci_free_dev(hdev);
3059 }
3060
3061 #ifdef CONFIG_PM
3062 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3063 {
3064 struct btusb_data *data = usb_get_intfdata(intf);
3065
3066 BT_DBG("intf %p", intf);
3067
3068 if (data->suspend_count++)
3069 return 0;
3070
3071 spin_lock_irq(&data->txlock);
3072 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3073 set_bit(BTUSB_SUSPENDING, &data->flags);
3074 spin_unlock_irq(&data->txlock);
3075 } else {
3076 spin_unlock_irq(&data->txlock);
3077 data->suspend_count--;
3078 return -EBUSY;
3079 }
3080
3081 cancel_work_sync(&data->work);
3082
3083 btusb_stop_traffic(data);
3084 usb_kill_anchored_urbs(&data->tx_anchor);
3085
3086 /* Optionally request a device reset on resume, but only when
3087 * wakeups are disabled. If wakeups are enabled we assume the
3088 * device will stay powered up throughout suspend.
3089 */
3090 if (test_bit(BTUSB_RESET_RESUME, &data->flags) &&
3091 !device_may_wakeup(&data->udev->dev))
3092 data->udev->reset_resume = 1;
3093
3094 return 0;
3095 }
3096
3097 static void play_deferred(struct btusb_data *data)
3098 {
3099 struct urb *urb;
3100 int err;
3101
3102 while ((urb = usb_get_from_anchor(&data->deferred))) {
3103 err = usb_submit_urb(urb, GFP_ATOMIC);
3104 if (err < 0)
3105 break;
3106
3107 data->tx_in_flight++;
3108 }
3109 usb_scuttle_anchored_urbs(&data->deferred);
3110 }
3111
3112 static int btusb_resume(struct usb_interface *intf)
3113 {
3114 struct btusb_data *data = usb_get_intfdata(intf);
3115 struct hci_dev *hdev = data->hdev;
3116 int err = 0;
3117
3118 BT_DBG("intf %p", intf);
3119
3120 if (--data->suspend_count)
3121 return 0;
3122
3123 if (!test_bit(HCI_RUNNING, &hdev->flags))
3124 goto done;
3125
3126 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3127 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3128 if (err < 0) {
3129 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3130 goto failed;
3131 }
3132 }
3133
3134 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3135 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3136 if (err < 0) {
3137 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3138 goto failed;
3139 }
3140
3141 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3142 }
3143
3144 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3145 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3146 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3147 else
3148 btusb_submit_isoc_urb(hdev, GFP_NOIO);
3149 }
3150
3151 spin_lock_irq(&data->txlock);
3152 play_deferred(data);
3153 clear_bit(BTUSB_SUSPENDING, &data->flags);
3154 spin_unlock_irq(&data->txlock);
3155 schedule_work(&data->work);
3156
3157 return 0;
3158
3159 failed:
3160 usb_scuttle_anchored_urbs(&data->deferred);
3161 done:
3162 spin_lock_irq(&data->txlock);
3163 clear_bit(BTUSB_SUSPENDING, &data->flags);
3164 spin_unlock_irq(&data->txlock);
3165
3166 return err;
3167 }
3168 #endif
3169
3170 static struct usb_driver btusb_driver = {
3171 .name = "btusb",
3172 .probe = btusb_probe,
3173 .disconnect = btusb_disconnect,
3174 #ifdef CONFIG_PM
3175 .suspend = btusb_suspend,
3176 .resume = btusb_resume,
3177 #endif
3178 .id_table = btusb_table,
3179 .supports_autosuspend = 1,
3180 .disable_hub_initiated_lpm = 1,
3181 };
3182
3183 module_usb_driver(btusb_driver);
3184
3185 module_param(disable_scofix, bool, 0644);
3186 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3187
3188 module_param(force_scofix, bool, 0644);
3189 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3190
3191 module_param(reset, bool, 0644);
3192 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3193
3194 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3195 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3196 MODULE_VERSION(VERSION);
3197 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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