projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge tag 'iwlwifi-next-for-kalle-2016-03-09_2' of https://git.kernel.org/pub/scm...
[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, 0x3474), .driver_info = BTUSB_ATH3012 },
238
239 /* Atheros AR5BBU12 with sflash firmware */
240 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
241
242 /* Atheros AR5BBU12 with sflash firmware */
243 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
244 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
245
246 /* QCA ROME chipset */
247 { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
248 { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
249 { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
250
251 /* Broadcom BCM2035 */
252 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
253 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
254 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
255
256 /* Broadcom BCM2045 */
257 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
258 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
259
260 /* IBM/Lenovo ThinkPad with Broadcom chip */
261 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
262 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
263
264 /* HP laptop with Broadcom chip */
265 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
266
267 /* Dell laptop with Broadcom chip */
268 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
269
270 /* Dell Wireless 370 and 410 devices */
271 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
272 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
273
274 /* Belkin F8T012 and F8T013 devices */
275 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
276 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
277
278 /* Asus WL-BTD202 device */
279 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
280
281 /* Kensington Bluetooth USB adapter */
282 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
283
284 /* RTX Telecom based adapters with buggy SCO support */
285 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
286 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
287
288 /* CONWISE Technology based adapters with buggy SCO support */
289 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
290
291 /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
292 { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
293
294 /* Digianswer devices */
295 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
296 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
297
298 /* CSR BlueCore Bluetooth Sniffer */
299 { USB_DEVICE(0x0a12, 0x0002),
300 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
301
302 /* Frontline ComProbe Bluetooth Sniffer */
303 { USB_DEVICE(0x16d3, 0x0002),
304 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
305
306 /* Marvell Bluetooth devices */
307 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
308 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
309
310 /* Intel Bluetooth devices */
311 { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
312 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
313 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
314 { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
315
316 /* Other Intel Bluetooth devices */
317 { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
318 .driver_info = BTUSB_IGNORE },
319
320 /* Realtek Bluetooth devices */
321 { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
322 .driver_info = BTUSB_REALTEK },
323
324 /* Additional Realtek 8723AE Bluetooth devices */
325 { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
326 { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
327
328 /* Additional Realtek 8723BE Bluetooth devices */
329 { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
330 { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
331 { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
332 { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
333 { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
334
335 /* Additional Realtek 8821AE Bluetooth devices */
336 { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
337 { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
338 { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
339 { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
340 { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
341
342 /* Silicon Wave based devices */
343 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
344
345 { } /* Terminating entry */
346 };
347
348 #define BTUSB_MAX_ISOC_FRAMES 10
349
350 #define BTUSB_INTR_RUNNING 0
351 #define BTUSB_BULK_RUNNING 1
352 #define BTUSB_ISOC_RUNNING 2
353 #define BTUSB_SUSPENDING 3
354 #define BTUSB_DID_ISO_RESUME 4
355 #define BTUSB_BOOTLOADER 5
356 #define BTUSB_DOWNLOADING 6
357 #define BTUSB_FIRMWARE_LOADED 7
358 #define BTUSB_FIRMWARE_FAILED 8
359 #define BTUSB_BOOTING 9
360 #define BTUSB_RESET_RESUME 10
361 #define BTUSB_DIAG_RUNNING 11
362
363 struct btusb_data {
364 struct hci_dev *hdev;
365 struct usb_device *udev;
366 struct usb_interface *intf;
367 struct usb_interface *isoc;
368 struct usb_interface *diag;
369
370 unsigned long flags;
371
372 struct work_struct work;
373 struct work_struct waker;
374
375 struct usb_anchor deferred;
376 struct usb_anchor tx_anchor;
377 int tx_in_flight;
378 spinlock_t txlock;
379
380 struct usb_anchor intr_anchor;
381 struct usb_anchor bulk_anchor;
382 struct usb_anchor isoc_anchor;
383 struct usb_anchor diag_anchor;
384 spinlock_t rxlock;
385
386 struct sk_buff *evt_skb;
387 struct sk_buff *acl_skb;
388 struct sk_buff *sco_skb;
389
390 struct usb_endpoint_descriptor *intr_ep;
391 struct usb_endpoint_descriptor *bulk_tx_ep;
392 struct usb_endpoint_descriptor *bulk_rx_ep;
393 struct usb_endpoint_descriptor *isoc_tx_ep;
394 struct usb_endpoint_descriptor *isoc_rx_ep;
395 struct usb_endpoint_descriptor *diag_tx_ep;
396 struct usb_endpoint_descriptor *diag_rx_ep;
397
398 __u8 cmdreq_type;
399 __u8 cmdreq;
400
401 unsigned int sco_num;
402 int isoc_altsetting;
403 int suspend_count;
404
405 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
406 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
407
408 int (*setup_on_usb)(struct hci_dev *hdev);
409 };
410
411 static inline void btusb_free_frags(struct btusb_data *data)
412 {
413 unsigned long flags;
414
415 spin_lock_irqsave(&data->rxlock, flags);
416
417 kfree_skb(data->evt_skb);
418 data->evt_skb = NULL;
419
420 kfree_skb(data->acl_skb);
421 data->acl_skb = NULL;
422
423 kfree_skb(data->sco_skb);
424 data->sco_skb = NULL;
425
426 spin_unlock_irqrestore(&data->rxlock, flags);
427 }
428
429 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
430 {
431 struct sk_buff *skb;
432 int err = 0;
433
434 spin_lock(&data->rxlock);
435 skb = data->evt_skb;
436
437 while (count) {
438 int len;
439
440 if (!skb) {
441 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
442 if (!skb) {
443 err = -ENOMEM;
444 break;
445 }
446
447 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
448 hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
449 }
450
451 len = min_t(uint, hci_skb_expect(skb), count);
452 memcpy(skb_put(skb, len), buffer, len);
453
454 count -= len;
455 buffer += len;
456 hci_skb_expect(skb) -= len;
457
458 if (skb->len == HCI_EVENT_HDR_SIZE) {
459 /* Complete event header */
460 hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
461
462 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
463 kfree_skb(skb);
464 skb = NULL;
465
466 err = -EILSEQ;
467 break;
468 }
469 }
470
471 if (!hci_skb_expect(skb)) {
472 /* Complete frame */
473 data->recv_event(data->hdev, skb);
474 skb = NULL;
475 }
476 }
477
478 data->evt_skb = skb;
479 spin_unlock(&data->rxlock);
480
481 return err;
482 }
483
484 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
485 {
486 struct sk_buff *skb;
487 int err = 0;
488
489 spin_lock(&data->rxlock);
490 skb = data->acl_skb;
491
492 while (count) {
493 int len;
494
495 if (!skb) {
496 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
497 if (!skb) {
498 err = -ENOMEM;
499 break;
500 }
501
502 hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
503 hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
504 }
505
506 len = min_t(uint, hci_skb_expect(skb), count);
507 memcpy(skb_put(skb, len), buffer, len);
508
509 count -= len;
510 buffer += len;
511 hci_skb_expect(skb) -= len;
512
513 if (skb->len == HCI_ACL_HDR_SIZE) {
514 __le16 dlen = hci_acl_hdr(skb)->dlen;
515
516 /* Complete ACL header */
517 hci_skb_expect(skb) = __le16_to_cpu(dlen);
518
519 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
520 kfree_skb(skb);
521 skb = NULL;
522
523 err = -EILSEQ;
524 break;
525 }
526 }
527
528 if (!hci_skb_expect(skb)) {
529 /* Complete frame */
530 hci_recv_frame(data->hdev, skb);
531 skb = NULL;
532 }
533 }
534
535 data->acl_skb = skb;
536 spin_unlock(&data->rxlock);
537
538 return err;
539 }
540
541 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
542 {
543 struct sk_buff *skb;
544 int err = 0;
545
546 spin_lock(&data->rxlock);
547 skb = data->sco_skb;
548
549 while (count) {
550 int len;
551
552 if (!skb) {
553 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
554 if (!skb) {
555 err = -ENOMEM;
556 break;
557 }
558
559 hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
560 hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
561 }
562
563 len = min_t(uint, hci_skb_expect(skb), count);
564 memcpy(skb_put(skb, len), buffer, len);
565
566 count -= len;
567 buffer += len;
568 hci_skb_expect(skb) -= len;
569
570 if (skb->len == HCI_SCO_HDR_SIZE) {
571 /* Complete SCO header */
572 hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
573
574 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
575 kfree_skb(skb);
576 skb = NULL;
577
578 err = -EILSEQ;
579 break;
580 }
581 }
582
583 if (!hci_skb_expect(skb)) {
584 /* Complete frame */
585 hci_recv_frame(data->hdev, skb);
586 skb = NULL;
587 }
588 }
589
590 data->sco_skb = skb;
591 spin_unlock(&data->rxlock);
592
593 return err;
594 }
595
596 static void btusb_intr_complete(struct urb *urb)
597 {
598 struct hci_dev *hdev = urb->context;
599 struct btusb_data *data = hci_get_drvdata(hdev);
600 int err;
601
602 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
603 urb->actual_length);
604
605 if (!test_bit(HCI_RUNNING, &hdev->flags))
606 return;
607
608 if (urb->status == 0) {
609 hdev->stat.byte_rx += urb->actual_length;
610
611 if (btusb_recv_intr(data, urb->transfer_buffer,
612 urb->actual_length) < 0) {
613 BT_ERR("%s corrupted event packet", hdev->name);
614 hdev->stat.err_rx++;
615 }
616 } else if (urb->status == -ENOENT) {
617 /* Avoid suspend failed when usb_kill_urb */
618 return;
619 }
620
621 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
622 return;
623
624 usb_mark_last_busy(data->udev);
625 usb_anchor_urb(urb, &data->intr_anchor);
626
627 err = usb_submit_urb(urb, GFP_ATOMIC);
628 if (err < 0) {
629 /* -EPERM: urb is being killed;
630 * -ENODEV: device got disconnected */
631 if (err != -EPERM && err != -ENODEV)
632 BT_ERR("%s urb %p failed to resubmit (%d)",
633 hdev->name, urb, -err);
634 usb_unanchor_urb(urb);
635 }
636 }
637
638 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
639 {
640 struct btusb_data *data = hci_get_drvdata(hdev);
641 struct urb *urb;
642 unsigned char *buf;
643 unsigned int pipe;
644 int err, size;
645
646 BT_DBG("%s", hdev->name);
647
648 if (!data->intr_ep)
649 return -ENODEV;
650
651 urb = usb_alloc_urb(0, mem_flags);
652 if (!urb)
653 return -ENOMEM;
654
655 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
656
657 buf = kmalloc(size, mem_flags);
658 if (!buf) {
659 usb_free_urb(urb);
660 return -ENOMEM;
661 }
662
663 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
664
665 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
666 btusb_intr_complete, hdev, data->intr_ep->bInterval);
667
668 urb->transfer_flags |= URB_FREE_BUFFER;
669
670 usb_anchor_urb(urb, &data->intr_anchor);
671
672 err = usb_submit_urb(urb, mem_flags);
673 if (err < 0) {
674 if (err != -EPERM && err != -ENODEV)
675 BT_ERR("%s urb %p submission failed (%d)",
676 hdev->name, urb, -err);
677 usb_unanchor_urb(urb);
678 }
679
680 usb_free_urb(urb);
681
682 return err;
683 }
684
685 static void btusb_bulk_complete(struct urb *urb)
686 {
687 struct hci_dev *hdev = urb->context;
688 struct btusb_data *data = hci_get_drvdata(hdev);
689 int err;
690
691 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
692 urb->actual_length);
693
694 if (!test_bit(HCI_RUNNING, &hdev->flags))
695 return;
696
697 if (urb->status == 0) {
698 hdev->stat.byte_rx += urb->actual_length;
699
700 if (data->recv_bulk(data, urb->transfer_buffer,
701 urb->actual_length) < 0) {
702 BT_ERR("%s corrupted ACL packet", hdev->name);
703 hdev->stat.err_rx++;
704 }
705 } else if (urb->status == -ENOENT) {
706 /* Avoid suspend failed when usb_kill_urb */
707 return;
708 }
709
710 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
711 return;
712
713 usb_anchor_urb(urb, &data->bulk_anchor);
714 usb_mark_last_busy(data->udev);
715
716 err = usb_submit_urb(urb, GFP_ATOMIC);
717 if (err < 0) {
718 /* -EPERM: urb is being killed;
719 * -ENODEV: device got disconnected */
720 if (err != -EPERM && err != -ENODEV)
721 BT_ERR("%s urb %p failed to resubmit (%d)",
722 hdev->name, urb, -err);
723 usb_unanchor_urb(urb);
724 }
725 }
726
727 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
728 {
729 struct btusb_data *data = hci_get_drvdata(hdev);
730 struct urb *urb;
731 unsigned char *buf;
732 unsigned int pipe;
733 int err, size = HCI_MAX_FRAME_SIZE;
734
735 BT_DBG("%s", hdev->name);
736
737 if (!data->bulk_rx_ep)
738 return -ENODEV;
739
740 urb = usb_alloc_urb(0, mem_flags);
741 if (!urb)
742 return -ENOMEM;
743
744 buf = kmalloc(size, mem_flags);
745 if (!buf) {
746 usb_free_urb(urb);
747 return -ENOMEM;
748 }
749
750 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
751
752 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
753 btusb_bulk_complete, hdev);
754
755 urb->transfer_flags |= URB_FREE_BUFFER;
756
757 usb_mark_last_busy(data->udev);
758 usb_anchor_urb(urb, &data->bulk_anchor);
759
760 err = usb_submit_urb(urb, mem_flags);
761 if (err < 0) {
762 if (err != -EPERM && err != -ENODEV)
763 BT_ERR("%s urb %p submission failed (%d)",
764 hdev->name, urb, -err);
765 usb_unanchor_urb(urb);
766 }
767
768 usb_free_urb(urb);
769
770 return err;
771 }
772
773 static void btusb_isoc_complete(struct urb *urb)
774 {
775 struct hci_dev *hdev = urb->context;
776 struct btusb_data *data = hci_get_drvdata(hdev);
777 int i, err;
778
779 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
780 urb->actual_length);
781
782 if (!test_bit(HCI_RUNNING, &hdev->flags))
783 return;
784
785 if (urb->status == 0) {
786 for (i = 0; i < urb->number_of_packets; i++) {
787 unsigned int offset = urb->iso_frame_desc[i].offset;
788 unsigned int length = urb->iso_frame_desc[i].actual_length;
789
790 if (urb->iso_frame_desc[i].status)
791 continue;
792
793 hdev->stat.byte_rx += length;
794
795 if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
796 length) < 0) {
797 BT_ERR("%s corrupted SCO packet", hdev->name);
798 hdev->stat.err_rx++;
799 }
800 }
801 } else if (urb->status == -ENOENT) {
802 /* Avoid suspend failed when usb_kill_urb */
803 return;
804 }
805
806 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
807 return;
808
809 usb_anchor_urb(urb, &data->isoc_anchor);
810
811 err = usb_submit_urb(urb, GFP_ATOMIC);
812 if (err < 0) {
813 /* -EPERM: urb is being killed;
814 * -ENODEV: device got disconnected */
815 if (err != -EPERM && err != -ENODEV)
816 BT_ERR("%s urb %p failed to resubmit (%d)",
817 hdev->name, urb, -err);
818 usb_unanchor_urb(urb);
819 }
820 }
821
822 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
823 {
824 int i, offset = 0;
825
826 BT_DBG("len %d mtu %d", len, mtu);
827
828 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
829 i++, offset += mtu, len -= mtu) {
830 urb->iso_frame_desc[i].offset = offset;
831 urb->iso_frame_desc[i].length = mtu;
832 }
833
834 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
835 urb->iso_frame_desc[i].offset = offset;
836 urb->iso_frame_desc[i].length = len;
837 i++;
838 }
839
840 urb->number_of_packets = i;
841 }
842
843 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
844 {
845 struct btusb_data *data = hci_get_drvdata(hdev);
846 struct urb *urb;
847 unsigned char *buf;
848 unsigned int pipe;
849 int err, size;
850
851 BT_DBG("%s", hdev->name);
852
853 if (!data->isoc_rx_ep)
854 return -ENODEV;
855
856 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
857 if (!urb)
858 return -ENOMEM;
859
860 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
861 BTUSB_MAX_ISOC_FRAMES;
862
863 buf = kmalloc(size, mem_flags);
864 if (!buf) {
865 usb_free_urb(urb);
866 return -ENOMEM;
867 }
868
869 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
870
871 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
872 hdev, data->isoc_rx_ep->bInterval);
873
874 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
875
876 __fill_isoc_descriptor(urb, size,
877 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
878
879 usb_anchor_urb(urb, &data->isoc_anchor);
880
881 err = usb_submit_urb(urb, mem_flags);
882 if (err < 0) {
883 if (err != -EPERM && err != -ENODEV)
884 BT_ERR("%s urb %p submission failed (%d)",
885 hdev->name, urb, -err);
886 usb_unanchor_urb(urb);
887 }
888
889 usb_free_urb(urb);
890
891 return err;
892 }
893
894 static void btusb_diag_complete(struct urb *urb)
895 {
896 struct hci_dev *hdev = urb->context;
897 struct btusb_data *data = hci_get_drvdata(hdev);
898 int err;
899
900 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
901 urb->actual_length);
902
903 if (urb->status == 0) {
904 struct sk_buff *skb;
905
906 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
907 if (skb) {
908 memcpy(skb_put(skb, urb->actual_length),
909 urb->transfer_buffer, urb->actual_length);
910 hci_recv_diag(hdev, skb);
911 }
912 } else if (urb->status == -ENOENT) {
913 /* Avoid suspend failed when usb_kill_urb */
914 return;
915 }
916
917 if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
918 return;
919
920 usb_anchor_urb(urb, &data->diag_anchor);
921 usb_mark_last_busy(data->udev);
922
923 err = usb_submit_urb(urb, GFP_ATOMIC);
924 if (err < 0) {
925 /* -EPERM: urb is being killed;
926 * -ENODEV: device got disconnected */
927 if (err != -EPERM && err != -ENODEV)
928 BT_ERR("%s urb %p failed to resubmit (%d)",
929 hdev->name, urb, -err);
930 usb_unanchor_urb(urb);
931 }
932 }
933
934 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
935 {
936 struct btusb_data *data = hci_get_drvdata(hdev);
937 struct urb *urb;
938 unsigned char *buf;
939 unsigned int pipe;
940 int err, size = HCI_MAX_FRAME_SIZE;
941
942 BT_DBG("%s", hdev->name);
943
944 if (!data->diag_rx_ep)
945 return -ENODEV;
946
947 urb = usb_alloc_urb(0, mem_flags);
948 if (!urb)
949 return -ENOMEM;
950
951 buf = kmalloc(size, mem_flags);
952 if (!buf) {
953 usb_free_urb(urb);
954 return -ENOMEM;
955 }
956
957 pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
958
959 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
960 btusb_diag_complete, hdev);
961
962 urb->transfer_flags |= URB_FREE_BUFFER;
963
964 usb_mark_last_busy(data->udev);
965 usb_anchor_urb(urb, &data->diag_anchor);
966
967 err = usb_submit_urb(urb, mem_flags);
968 if (err < 0) {
969 if (err != -EPERM && err != -ENODEV)
970 BT_ERR("%s urb %p submission failed (%d)",
971 hdev->name, urb, -err);
972 usb_unanchor_urb(urb);
973 }
974
975 usb_free_urb(urb);
976
977 return err;
978 }
979
980 static void btusb_tx_complete(struct urb *urb)
981 {
982 struct sk_buff *skb = urb->context;
983 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
984 struct btusb_data *data = hci_get_drvdata(hdev);
985
986 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
987 urb->actual_length);
988
989 if (!test_bit(HCI_RUNNING, &hdev->flags))
990 goto done;
991
992 if (!urb->status)
993 hdev->stat.byte_tx += urb->transfer_buffer_length;
994 else
995 hdev->stat.err_tx++;
996
997 done:
998 spin_lock(&data->txlock);
999 data->tx_in_flight--;
1000 spin_unlock(&data->txlock);
1001
1002 kfree(urb->setup_packet);
1003
1004 kfree_skb(skb);
1005 }
1006
1007 static void btusb_isoc_tx_complete(struct urb *urb)
1008 {
1009 struct sk_buff *skb = urb->context;
1010 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1011
1012 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1013 urb->actual_length);
1014
1015 if (!test_bit(HCI_RUNNING, &hdev->flags))
1016 goto done;
1017
1018 if (!urb->status)
1019 hdev->stat.byte_tx += urb->transfer_buffer_length;
1020 else
1021 hdev->stat.err_tx++;
1022
1023 done:
1024 kfree(urb->setup_packet);
1025
1026 kfree_skb(skb);
1027 }
1028
1029 static int btusb_open(struct hci_dev *hdev)
1030 {
1031 struct btusb_data *data = hci_get_drvdata(hdev);
1032 int err;
1033
1034 BT_DBG("%s", hdev->name);
1035
1036 /* Patching USB firmware files prior to starting any URBs of HCI path
1037 * It is more safe to use USB bulk channel for downloading USB patch
1038 */
1039 if (data->setup_on_usb) {
1040 err = data->setup_on_usb(hdev);
1041 if (err < 0)
1042 return err;
1043 }
1044
1045 err = usb_autopm_get_interface(data->intf);
1046 if (err < 0)
1047 return err;
1048
1049 data->intf->needs_remote_wakeup = 1;
1050
1051 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1052 goto done;
1053
1054 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1055 if (err < 0)
1056 goto failed;
1057
1058 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1059 if (err < 0) {
1060 usb_kill_anchored_urbs(&data->intr_anchor);
1061 goto failed;
1062 }
1063
1064 set_bit(BTUSB_BULK_RUNNING, &data->flags);
1065 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1066
1067 if (data->diag) {
1068 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1069 set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1070 }
1071
1072 done:
1073 usb_autopm_put_interface(data->intf);
1074 return 0;
1075
1076 failed:
1077 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1078 usb_autopm_put_interface(data->intf);
1079 return err;
1080 }
1081
1082 static void btusb_stop_traffic(struct btusb_data *data)
1083 {
1084 usb_kill_anchored_urbs(&data->intr_anchor);
1085 usb_kill_anchored_urbs(&data->bulk_anchor);
1086 usb_kill_anchored_urbs(&data->isoc_anchor);
1087 usb_kill_anchored_urbs(&data->diag_anchor);
1088 }
1089
1090 static int btusb_close(struct hci_dev *hdev)
1091 {
1092 struct btusb_data *data = hci_get_drvdata(hdev);
1093 int err;
1094
1095 BT_DBG("%s", hdev->name);
1096
1097 cancel_work_sync(&data->work);
1098 cancel_work_sync(&data->waker);
1099
1100 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1101 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1102 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1103 clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1104
1105 btusb_stop_traffic(data);
1106 btusb_free_frags(data);
1107
1108 err = usb_autopm_get_interface(data->intf);
1109 if (err < 0)
1110 goto failed;
1111
1112 data->intf->needs_remote_wakeup = 0;
1113 usb_autopm_put_interface(data->intf);
1114
1115 failed:
1116 usb_scuttle_anchored_urbs(&data->deferred);
1117 return 0;
1118 }
1119
1120 static int btusb_flush(struct hci_dev *hdev)
1121 {
1122 struct btusb_data *data = hci_get_drvdata(hdev);
1123
1124 BT_DBG("%s", hdev->name);
1125
1126 usb_kill_anchored_urbs(&data->tx_anchor);
1127 btusb_free_frags(data);
1128
1129 return 0;
1130 }
1131
1132 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1133 {
1134 struct btusb_data *data = hci_get_drvdata(hdev);
1135 struct usb_ctrlrequest *dr;
1136 struct urb *urb;
1137 unsigned int pipe;
1138
1139 urb = usb_alloc_urb(0, GFP_KERNEL);
1140 if (!urb)
1141 return ERR_PTR(-ENOMEM);
1142
1143 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1144 if (!dr) {
1145 usb_free_urb(urb);
1146 return ERR_PTR(-ENOMEM);
1147 }
1148
1149 dr->bRequestType = data->cmdreq_type;
1150 dr->bRequest = data->cmdreq;
1151 dr->wIndex = 0;
1152 dr->wValue = 0;
1153 dr->wLength = __cpu_to_le16(skb->len);
1154
1155 pipe = usb_sndctrlpipe(data->udev, 0x00);
1156
1157 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1158 skb->data, skb->len, btusb_tx_complete, skb);
1159
1160 skb->dev = (void *)hdev;
1161
1162 return urb;
1163 }
1164
1165 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1166 {
1167 struct btusb_data *data = hci_get_drvdata(hdev);
1168 struct urb *urb;
1169 unsigned int pipe;
1170
1171 if (!data->bulk_tx_ep)
1172 return ERR_PTR(-ENODEV);
1173
1174 urb = usb_alloc_urb(0, GFP_KERNEL);
1175 if (!urb)
1176 return ERR_PTR(-ENOMEM);
1177
1178 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1179
1180 usb_fill_bulk_urb(urb, data->udev, pipe,
1181 skb->data, skb->len, btusb_tx_complete, skb);
1182
1183 skb->dev = (void *)hdev;
1184
1185 return urb;
1186 }
1187
1188 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1189 {
1190 struct btusb_data *data = hci_get_drvdata(hdev);
1191 struct urb *urb;
1192 unsigned int pipe;
1193
1194 if (!data->isoc_tx_ep)
1195 return ERR_PTR(-ENODEV);
1196
1197 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1198 if (!urb)
1199 return ERR_PTR(-ENOMEM);
1200
1201 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1202
1203 usb_fill_int_urb(urb, data->udev, pipe,
1204 skb->data, skb->len, btusb_isoc_tx_complete,
1205 skb, data->isoc_tx_ep->bInterval);
1206
1207 urb->transfer_flags = URB_ISO_ASAP;
1208
1209 __fill_isoc_descriptor(urb, skb->len,
1210 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1211
1212 skb->dev = (void *)hdev;
1213
1214 return urb;
1215 }
1216
1217 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1218 {
1219 struct btusb_data *data = hci_get_drvdata(hdev);
1220 int err;
1221
1222 usb_anchor_urb(urb, &data->tx_anchor);
1223
1224 err = usb_submit_urb(urb, GFP_KERNEL);
1225 if (err < 0) {
1226 if (err != -EPERM && err != -ENODEV)
1227 BT_ERR("%s urb %p submission failed (%d)",
1228 hdev->name, urb, -err);
1229 kfree(urb->setup_packet);
1230 usb_unanchor_urb(urb);
1231 } else {
1232 usb_mark_last_busy(data->udev);
1233 }
1234
1235 usb_free_urb(urb);
1236 return err;
1237 }
1238
1239 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1240 {
1241 struct btusb_data *data = hci_get_drvdata(hdev);
1242 unsigned long flags;
1243 bool suspending;
1244
1245 spin_lock_irqsave(&data->txlock, flags);
1246 suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1247 if (!suspending)
1248 data->tx_in_flight++;
1249 spin_unlock_irqrestore(&data->txlock, flags);
1250
1251 if (!suspending)
1252 return submit_tx_urb(hdev, urb);
1253
1254 usb_anchor_urb(urb, &data->deferred);
1255 schedule_work(&data->waker);
1256
1257 usb_free_urb(urb);
1258 return 0;
1259 }
1260
1261 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1262 {
1263 struct urb *urb;
1264
1265 BT_DBG("%s", hdev->name);
1266
1267 switch (hci_skb_pkt_type(skb)) {
1268 case HCI_COMMAND_PKT:
1269 urb = alloc_ctrl_urb(hdev, skb);
1270 if (IS_ERR(urb))
1271 return PTR_ERR(urb);
1272
1273 hdev->stat.cmd_tx++;
1274 return submit_or_queue_tx_urb(hdev, urb);
1275
1276 case HCI_ACLDATA_PKT:
1277 urb = alloc_bulk_urb(hdev, skb);
1278 if (IS_ERR(urb))
1279 return PTR_ERR(urb);
1280
1281 hdev->stat.acl_tx++;
1282 return submit_or_queue_tx_urb(hdev, urb);
1283
1284 case HCI_SCODATA_PKT:
1285 if (hci_conn_num(hdev, SCO_LINK) < 1)
1286 return -ENODEV;
1287
1288 urb = alloc_isoc_urb(hdev, skb);
1289 if (IS_ERR(urb))
1290 return PTR_ERR(urb);
1291
1292 hdev->stat.sco_tx++;
1293 return submit_tx_urb(hdev, urb);
1294 }
1295
1296 return -EILSEQ;
1297 }
1298
1299 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1300 {
1301 struct btusb_data *data = hci_get_drvdata(hdev);
1302
1303 BT_DBG("%s evt %d", hdev->name, evt);
1304
1305 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1306 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1307 schedule_work(&data->work);
1308 }
1309 }
1310
1311 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1312 {
1313 struct btusb_data *data = hci_get_drvdata(hdev);
1314 struct usb_interface *intf = data->isoc;
1315 struct usb_endpoint_descriptor *ep_desc;
1316 int i, err;
1317
1318 if (!data->isoc)
1319 return -ENODEV;
1320
1321 err = usb_set_interface(data->udev, 1, altsetting);
1322 if (err < 0) {
1323 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1324 return err;
1325 }
1326
1327 data->isoc_altsetting = altsetting;
1328
1329 data->isoc_tx_ep = NULL;
1330 data->isoc_rx_ep = NULL;
1331
1332 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1333 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1334
1335 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1336 data->isoc_tx_ep = ep_desc;
1337 continue;
1338 }
1339
1340 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1341 data->isoc_rx_ep = ep_desc;
1342 continue;
1343 }
1344 }
1345
1346 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1347 BT_ERR("%s invalid SCO descriptors", hdev->name);
1348 return -ENODEV;
1349 }
1350
1351 return 0;
1352 }
1353
1354 static void btusb_work(struct work_struct *work)
1355 {
1356 struct btusb_data *data = container_of(work, struct btusb_data, work);
1357 struct hci_dev *hdev = data->hdev;
1358 int new_alts;
1359 int err;
1360
1361 if (data->sco_num > 0) {
1362 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1363 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1364 if (err < 0) {
1365 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1366 usb_kill_anchored_urbs(&data->isoc_anchor);
1367 return;
1368 }
1369
1370 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1371 }
1372
1373 if (hdev->voice_setting & 0x0020) {
1374 static const int alts[3] = { 2, 4, 5 };
1375
1376 new_alts = alts[data->sco_num - 1];
1377 } else {
1378 new_alts = data->sco_num;
1379 }
1380
1381 if (data->isoc_altsetting != new_alts) {
1382 unsigned long flags;
1383
1384 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1385 usb_kill_anchored_urbs(&data->isoc_anchor);
1386
1387 /* When isochronous alternate setting needs to be
1388 * changed, because SCO connection has been added
1389 * or removed, a packet fragment may be left in the
1390 * reassembling state. This could lead to wrongly
1391 * assembled fragments.
1392 *
1393 * Clear outstanding fragment when selecting a new
1394 * alternate setting.
1395 */
1396 spin_lock_irqsave(&data->rxlock, flags);
1397 kfree_skb(data->sco_skb);
1398 data->sco_skb = NULL;
1399 spin_unlock_irqrestore(&data->rxlock, flags);
1400
1401 if (__set_isoc_interface(hdev, new_alts) < 0)
1402 return;
1403 }
1404
1405 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1406 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1407 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1408 else
1409 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1410 }
1411 } else {
1412 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1413 usb_kill_anchored_urbs(&data->isoc_anchor);
1414
1415 __set_isoc_interface(hdev, 0);
1416 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1417 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1418 }
1419 }
1420
1421 static void btusb_waker(struct work_struct *work)
1422 {
1423 struct btusb_data *data = container_of(work, struct btusb_data, waker);
1424 int err;
1425
1426 err = usb_autopm_get_interface(data->intf);
1427 if (err < 0)
1428 return;
1429
1430 usb_autopm_put_interface(data->intf);
1431 }
1432
1433 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1434 {
1435 struct sk_buff *skb;
1436 u8 val = 0x00;
1437
1438 BT_DBG("%s", hdev->name);
1439
1440 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1441 if (IS_ERR(skb))
1442 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1443 else
1444 kfree_skb(skb);
1445
1446 return 0;
1447 }
1448
1449 static int btusb_setup_csr(struct hci_dev *hdev)
1450 {
1451 struct hci_rp_read_local_version *rp;
1452 struct sk_buff *skb;
1453
1454 BT_DBG("%s", hdev->name);
1455
1456 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1457 HCI_INIT_TIMEOUT);
1458 if (IS_ERR(skb)) {
1459 int err = PTR_ERR(skb);
1460 BT_ERR("%s: CSR: Local version failed (%d)", hdev->name, err);
1461 return err;
1462 }
1463
1464 if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1465 BT_ERR("%s: CSR: Local version length mismatch", hdev->name);
1466 kfree_skb(skb);
1467 return -EIO;
1468 }
1469
1470 rp = (struct hci_rp_read_local_version *)skb->data;
1471
1472 /* Detect controllers which aren't real CSR ones. */
1473 if (le16_to_cpu(rp->manufacturer) != 10 ||
1474 le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1475 /* Clear the reset quirk since this is not an actual
1476 * early Bluetooth 1.1 device from CSR.
1477 */
1478 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1479
1480 /* These fake CSR controllers have all a broken
1481 * stored link key handling and so just disable it.
1482 */
1483 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1484 }
1485
1486 kfree_skb(skb);
1487
1488 return 0;
1489 }
1490
1491 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1492 struct intel_version *ver)
1493 {
1494 const struct firmware *fw;
1495 char fwname[64];
1496 int ret;
1497
1498 snprintf(fwname, sizeof(fwname),
1499 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1500 ver->hw_platform, ver->hw_variant, ver->hw_revision,
1501 ver->fw_variant, ver->fw_revision, ver->fw_build_num,
1502 ver->fw_build_ww, ver->fw_build_yy);
1503
1504 ret = request_firmware(&fw, fwname, &hdev->dev);
1505 if (ret < 0) {
1506 if (ret == -EINVAL) {
1507 BT_ERR("%s Intel firmware file request failed (%d)",
1508 hdev->name, ret);
1509 return NULL;
1510 }
1511
1512 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1513 hdev->name, fwname, ret);
1514
1515 /* If the correct firmware patch file is not found, use the
1516 * default firmware patch file instead
1517 */
1518 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1519 ver->hw_platform, ver->hw_variant);
1520 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1521 BT_ERR("%s failed to open default Intel fw file: %s",
1522 hdev->name, fwname);
1523 return NULL;
1524 }
1525 }
1526
1527 BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1528
1529 return fw;
1530 }
1531
1532 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1533 const struct firmware *fw,
1534 const u8 **fw_ptr, int *disable_patch)
1535 {
1536 struct sk_buff *skb;
1537 struct hci_command_hdr *cmd;
1538 const u8 *cmd_param;
1539 struct hci_event_hdr *evt = NULL;
1540 const u8 *evt_param = NULL;
1541 int remain = fw->size - (*fw_ptr - fw->data);
1542
1543 /* The first byte indicates the types of the patch command or event.
1544 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1545 * in the current firmware buffer doesn't start with 0x01 or
1546 * the size of remain buffer is smaller than HCI command header,
1547 * the firmware file is corrupted and it should stop the patching
1548 * process.
1549 */
1550 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1551 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1552 return -EINVAL;
1553 }
1554 (*fw_ptr)++;
1555 remain--;
1556
1557 cmd = (struct hci_command_hdr *)(*fw_ptr);
1558 *fw_ptr += sizeof(*cmd);
1559 remain -= sizeof(*cmd);
1560
1561 /* Ensure that the remain firmware data is long enough than the length
1562 * of command parameter. If not, the firmware file is corrupted.
1563 */
1564 if (remain < cmd->plen) {
1565 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1566 return -EFAULT;
1567 }
1568
1569 /* If there is a command that loads a patch in the firmware
1570 * file, then enable the patch upon success, otherwise just
1571 * disable the manufacturer mode, for example patch activation
1572 * is not required when the default firmware patch file is used
1573 * because there are no patch data to load.
1574 */
1575 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1576 *disable_patch = 0;
1577
1578 cmd_param = *fw_ptr;
1579 *fw_ptr += cmd->plen;
1580 remain -= cmd->plen;
1581
1582 /* This reads the expected events when the above command is sent to the
1583 * device. Some vendor commands expects more than one events, for
1584 * example command status event followed by vendor specific event.
1585 * For this case, it only keeps the last expected event. so the command
1586 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1587 * last expected event.
1588 */
1589 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1590 (*fw_ptr)++;
1591 remain--;
1592
1593 evt = (struct hci_event_hdr *)(*fw_ptr);
1594 *fw_ptr += sizeof(*evt);
1595 remain -= sizeof(*evt);
1596
1597 if (remain < evt->plen) {
1598 BT_ERR("%s Intel fw corrupted: invalid evt len",
1599 hdev->name);
1600 return -EFAULT;
1601 }
1602
1603 evt_param = *fw_ptr;
1604 *fw_ptr += evt->plen;
1605 remain -= evt->plen;
1606 }
1607
1608 /* Every HCI commands in the firmware file has its correspond event.
1609 * If event is not found or remain is smaller than zero, the firmware
1610 * file is corrupted.
1611 */
1612 if (!evt || !evt_param || remain < 0) {
1613 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1614 return -EFAULT;
1615 }
1616
1617 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1618 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1619 if (IS_ERR(skb)) {
1620 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1621 hdev->name, cmd->opcode, PTR_ERR(skb));
1622 return PTR_ERR(skb);
1623 }
1624
1625 /* It ensures that the returned event matches the event data read from
1626 * the firmware file. At fist, it checks the length and then
1627 * the contents of the event.
1628 */
1629 if (skb->len != evt->plen) {
1630 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1631 le16_to_cpu(cmd->opcode));
1632 kfree_skb(skb);
1633 return -EFAULT;
1634 }
1635
1636 if (memcmp(skb->data, evt_param, evt->plen)) {
1637 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1638 hdev->name, le16_to_cpu(cmd->opcode));
1639 kfree_skb(skb);
1640 return -EFAULT;
1641 }
1642 kfree_skb(skb);
1643
1644 return 0;
1645 }
1646
1647 static int btusb_setup_intel(struct hci_dev *hdev)
1648 {
1649 struct sk_buff *skb;
1650 const struct firmware *fw;
1651 const u8 *fw_ptr;
1652 int disable_patch, err;
1653 struct intel_version ver;
1654
1655 BT_DBG("%s", hdev->name);
1656
1657 /* The controller has a bug with the first HCI command sent to it
1658 * returning number of completed commands as zero. This would stall the
1659 * command processing in the Bluetooth core.
1660 *
1661 * As a workaround, send HCI Reset command first which will reset the
1662 * number of completed commands and allow normal command processing
1663 * from now on.
1664 */
1665 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1666 if (IS_ERR(skb)) {
1667 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1668 hdev->name, PTR_ERR(skb));
1669 return PTR_ERR(skb);
1670 }
1671 kfree_skb(skb);
1672
1673 /* Read Intel specific controller version first to allow selection of
1674 * which firmware file to load.
1675 *
1676 * The returned information are hardware variant and revision plus
1677 * firmware variant, revision and build number.
1678 */
1679 err = btintel_read_version(hdev, &ver);
1680 if (err)
1681 return err;
1682
1683 BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1684 hdev->name, ver.hw_platform, ver.hw_variant, ver.hw_revision,
1685 ver.fw_variant, ver.fw_revision, ver.fw_build_num,
1686 ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
1687
1688 /* fw_patch_num indicates the version of patch the device currently
1689 * have. If there is no patch data in the device, it is always 0x00.
1690 * So, if it is other than 0x00, no need to patch the device again.
1691 */
1692 if (ver.fw_patch_num) {
1693 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1694 hdev->name, ver.fw_patch_num);
1695 goto complete;
1696 }
1697
1698 /* Opens the firmware patch file based on the firmware version read
1699 * from the controller. If it fails to open the matching firmware
1700 * patch file, it tries to open the default firmware patch file.
1701 * If no patch file is found, allow the device to operate without
1702 * a patch.
1703 */
1704 fw = btusb_setup_intel_get_fw(hdev, &ver);
1705 if (!fw)
1706 goto complete;
1707 fw_ptr = fw->data;
1708
1709 /* Enable the manufacturer mode of the controller.
1710 * Only while this mode is enabled, the driver can download the
1711 * firmware patch data and configuration parameters.
1712 */
1713 err = btintel_enter_mfg(hdev);
1714 if (err) {
1715 release_firmware(fw);
1716 return err;
1717 }
1718
1719 disable_patch = 1;
1720
1721 /* The firmware data file consists of list of Intel specific HCI
1722 * commands and its expected events. The first byte indicates the
1723 * type of the message, either HCI command or HCI event.
1724 *
1725 * It reads the command and its expected event from the firmware file,
1726 * and send to the controller. Once __hci_cmd_sync_ev() returns,
1727 * the returned event is compared with the event read from the firmware
1728 * file and it will continue until all the messages are downloaded to
1729 * the controller.
1730 *
1731 * Once the firmware patching is completed successfully,
1732 * the manufacturer mode is disabled with reset and activating the
1733 * downloaded patch.
1734 *
1735 * If the firmware patching fails, the manufacturer mode is
1736 * disabled with reset and deactivating the patch.
1737 *
1738 * If the default patch file is used, no reset is done when disabling
1739 * the manufacturer.
1740 */
1741 while (fw->size > fw_ptr - fw->data) {
1742 int ret;
1743
1744 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1745 &disable_patch);
1746 if (ret < 0)
1747 goto exit_mfg_deactivate;
1748 }
1749
1750 release_firmware(fw);
1751
1752 if (disable_patch)
1753 goto exit_mfg_disable;
1754
1755 /* Patching completed successfully and disable the manufacturer mode
1756 * with reset and activate the downloaded firmware patches.
1757 */
1758 err = btintel_exit_mfg(hdev, true, true);
1759 if (err)
1760 return err;
1761
1762 BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1763 hdev->name);
1764
1765 goto complete;
1766
1767 exit_mfg_disable:
1768 /* Disable the manufacturer mode without reset */
1769 err = btintel_exit_mfg(hdev, false, false);
1770 if (err)
1771 return err;
1772
1773 BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1774
1775 goto complete;
1776
1777 exit_mfg_deactivate:
1778 release_firmware(fw);
1779
1780 /* Patching failed. Disable the manufacturer mode with reset and
1781 * deactivate the downloaded firmware patches.
1782 */
1783 err = btintel_exit_mfg(hdev, true, false);
1784 if (err)
1785 return err;
1786
1787 BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1788 hdev->name);
1789
1790 complete:
1791 /* Set the event mask for Intel specific vendor events. This enables
1792 * a few extra events that are useful during general operation.
1793 */
1794 btintel_set_event_mask_mfg(hdev, false);
1795
1796 btintel_check_bdaddr(hdev);
1797 return 0;
1798 }
1799
1800 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1801 {
1802 struct sk_buff *skb;
1803 struct hci_event_hdr *hdr;
1804 struct hci_ev_cmd_complete *evt;
1805
1806 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1807 if (!skb)
1808 return -ENOMEM;
1809
1810 hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
1811 hdr->evt = HCI_EV_CMD_COMPLETE;
1812 hdr->plen = sizeof(*evt) + 1;
1813
1814 evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
1815 evt->ncmd = 0x01;
1816 evt->opcode = cpu_to_le16(opcode);
1817
1818 *skb_put(skb, 1) = 0x00;
1819
1820 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
1821
1822 return hci_recv_frame(hdev, skb);
1823 }
1824
1825 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1826 int count)
1827 {
1828 /* When the device is in bootloader mode, then it can send
1829 * events via the bulk endpoint. These events are treated the
1830 * same way as the ones received from the interrupt endpoint.
1831 */
1832 if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1833 return btusb_recv_intr(data, buffer, count);
1834
1835 return btusb_recv_bulk(data, buffer, count);
1836 }
1837
1838 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1839 unsigned int len)
1840 {
1841 const struct intel_bootup *evt = ptr;
1842
1843 if (len != sizeof(*evt))
1844 return;
1845
1846 if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1847 smp_mb__after_atomic();
1848 wake_up_bit(&data->flags, BTUSB_BOOTING);
1849 }
1850 }
1851
1852 static void btusb_intel_secure_send_result(struct btusb_data *data,
1853 const void *ptr, unsigned int len)
1854 {
1855 const struct intel_secure_send_result *evt = ptr;
1856
1857 if (len != sizeof(*evt))
1858 return;
1859
1860 if (evt->result)
1861 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1862
1863 if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1864 test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1865 smp_mb__after_atomic();
1866 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1867 }
1868 }
1869
1870 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1871 {
1872 struct btusb_data *data = hci_get_drvdata(hdev);
1873
1874 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1875 struct hci_event_hdr *hdr = (void *)skb->data;
1876
1877 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1878 hdr->plen > 0) {
1879 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1880 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1881
1882 switch (skb->data[2]) {
1883 case 0x02:
1884 /* When switching to the operational firmware
1885 * the device sends a vendor specific event
1886 * indicating that the bootup completed.
1887 */
1888 btusb_intel_bootup(data, ptr, len);
1889 break;
1890 case 0x06:
1891 /* When the firmware loading completes the
1892 * device sends out a vendor specific event
1893 * indicating the result of the firmware
1894 * loading.
1895 */
1896 btusb_intel_secure_send_result(data, ptr, len);
1897 break;
1898 }
1899 }
1900 }
1901
1902 return hci_recv_frame(hdev, skb);
1903 }
1904
1905 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1906 {
1907 struct btusb_data *data = hci_get_drvdata(hdev);
1908 struct urb *urb;
1909
1910 BT_DBG("%s", hdev->name);
1911
1912 switch (hci_skb_pkt_type(skb)) {
1913 case HCI_COMMAND_PKT:
1914 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1915 struct hci_command_hdr *cmd = (void *)skb->data;
1916 __u16 opcode = le16_to_cpu(cmd->opcode);
1917
1918 /* When in bootloader mode and the command 0xfc09
1919 * is received, it needs to be send down the
1920 * bulk endpoint. So allocate a bulk URB instead.
1921 */
1922 if (opcode == 0xfc09)
1923 urb = alloc_bulk_urb(hdev, skb);
1924 else
1925 urb = alloc_ctrl_urb(hdev, skb);
1926
1927 /* When the 0xfc01 command is issued to boot into
1928 * the operational firmware, it will actually not
1929 * send a command complete event. To keep the flow
1930 * control working inject that event here.
1931 */
1932 if (opcode == 0xfc01)
1933 inject_cmd_complete(hdev, opcode);
1934 } else {
1935 urb = alloc_ctrl_urb(hdev, skb);
1936 }
1937 if (IS_ERR(urb))
1938 return PTR_ERR(urb);
1939
1940 hdev->stat.cmd_tx++;
1941 return submit_or_queue_tx_urb(hdev, urb);
1942
1943 case HCI_ACLDATA_PKT:
1944 urb = alloc_bulk_urb(hdev, skb);
1945 if (IS_ERR(urb))
1946 return PTR_ERR(urb);
1947
1948 hdev->stat.acl_tx++;
1949 return submit_or_queue_tx_urb(hdev, urb);
1950
1951 case HCI_SCODATA_PKT:
1952 if (hci_conn_num(hdev, SCO_LINK) < 1)
1953 return -ENODEV;
1954
1955 urb = alloc_isoc_urb(hdev, skb);
1956 if (IS_ERR(urb))
1957 return PTR_ERR(urb);
1958
1959 hdev->stat.sco_tx++;
1960 return submit_tx_urb(hdev, urb);
1961 }
1962
1963 return -EILSEQ;
1964 }
1965
1966 static int btusb_setup_intel_new(struct hci_dev *hdev)
1967 {
1968 static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
1969 0x00, 0x08, 0x04, 0x00 };
1970 struct btusb_data *data = hci_get_drvdata(hdev);
1971 struct sk_buff *skb;
1972 struct intel_version ver;
1973 struct intel_boot_params *params;
1974 const struct firmware *fw;
1975 const u8 *fw_ptr;
1976 u32 frag_len;
1977 char fwname[64];
1978 ktime_t calltime, delta, rettime;
1979 unsigned long long duration;
1980 int err;
1981
1982 BT_DBG("%s", hdev->name);
1983
1984 calltime = ktime_get();
1985
1986 /* Read the Intel version information to determine if the device
1987 * is in bootloader mode or if it already has operational firmware
1988 * loaded.
1989 */
1990 err = btintel_read_version(hdev, &ver);
1991 if (err)
1992 return err;
1993
1994 /* The hardware platform number has a fixed value of 0x37 and
1995 * for now only accept this single value.
1996 */
1997 if (ver.hw_platform != 0x37) {
1998 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
1999 hdev->name, ver.hw_platform);
2000 return -EINVAL;
2001 }
2002
2003 /* At the moment only the hardware variant iBT 3.0 (LnP/SfP) is
2004 * supported by this firmware loading method. This check has been
2005 * put in place to ensure correct forward compatibility options
2006 * when newer hardware variants come along.
2007 */
2008 if (ver.hw_variant != 0x0b) {
2009 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
2010 hdev->name, ver.hw_variant);
2011 return -EINVAL;
2012 }
2013
2014 btintel_version_info(hdev, &ver);
2015
2016 /* The firmware variant determines if the device is in bootloader
2017 * mode or is running operational firmware. The value 0x06 identifies
2018 * the bootloader and the value 0x23 identifies the operational
2019 * firmware.
2020 *
2021 * When the operational firmware is already present, then only
2022 * the check for valid Bluetooth device address is needed. This
2023 * determines if the device will be added as configured or
2024 * unconfigured controller.
2025 *
2026 * It is not possible to use the Secure Boot Parameters in this
2027 * case since that command is only available in bootloader mode.
2028 */
2029 if (ver.fw_variant == 0x23) {
2030 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2031 btintel_check_bdaddr(hdev);
2032 return 0;
2033 }
2034
2035 /* If the device is not in bootloader mode, then the only possible
2036 * choice is to return an error and abort the device initialization.
2037 */
2038 if (ver.fw_variant != 0x06) {
2039 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2040 hdev->name, ver.fw_variant);
2041 return -ENODEV;
2042 }
2043
2044 /* Read the secure boot parameters to identify the operating
2045 * details of the bootloader.
2046 */
2047 skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2048 if (IS_ERR(skb)) {
2049 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2050 hdev->name, PTR_ERR(skb));
2051 return PTR_ERR(skb);
2052 }
2053
2054 if (skb->len != sizeof(*params)) {
2055 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2056 kfree_skb(skb);
2057 return -EILSEQ;
2058 }
2059
2060 params = (struct intel_boot_params *)skb->data;
2061
2062 BT_INFO("%s: Device revision is %u", hdev->name,
2063 le16_to_cpu(params->dev_revid));
2064
2065 BT_INFO("%s: Secure boot is %s", hdev->name,
2066 params->secure_boot ? "enabled" : "disabled");
2067
2068 BT_INFO("%s: OTP lock is %s", hdev->name,
2069 params->otp_lock ? "enabled" : "disabled");
2070
2071 BT_INFO("%s: API lock is %s", hdev->name,
2072 params->api_lock ? "enabled" : "disabled");
2073
2074 BT_INFO("%s: Debug lock is %s", hdev->name,
2075 params->debug_lock ? "enabled" : "disabled");
2076
2077 BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2078 params->min_fw_build_nn, params->min_fw_build_cw,
2079 2000 + params->min_fw_build_yy);
2080
2081 /* It is required that every single firmware fragment is acknowledged
2082 * with a command complete event. If the boot parameters indicate
2083 * that this bootloader does not send them, then abort the setup.
2084 */
2085 if (params->limited_cce != 0x00) {
2086 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2087 hdev->name, params->limited_cce);
2088 kfree_skb(skb);
2089 return -EINVAL;
2090 }
2091
2092 /* If the OTP has no valid Bluetooth device address, then there will
2093 * also be no valid address for the operational firmware.
2094 */
2095 if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2096 BT_INFO("%s: No device address configured", hdev->name);
2097 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2098 }
2099
2100 /* With this Intel bootloader only the hardware variant and device
2101 * revision information are used to select the right firmware.
2102 *
2103 * Currently this bootloader support is limited to hardware variant
2104 * iBT 3.0 (LnP/SfP) which is identified by the value 11 (0x0b).
2105 */
2106 snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.sfi",
2107 le16_to_cpu(params->dev_revid));
2108
2109 err = request_firmware(&fw, fwname, &hdev->dev);
2110 if (err < 0) {
2111 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2112 hdev->name, err);
2113 kfree_skb(skb);
2114 return err;
2115 }
2116
2117 BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2118
2119 /* Save the DDC file name for later use to apply once the firmware
2120 * downloading is done.
2121 */
2122 snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.ddc",
2123 le16_to_cpu(params->dev_revid));
2124
2125 kfree_skb(skb);
2126
2127 if (fw->size < 644) {
2128 BT_ERR("%s: Invalid size of firmware file (%zu)",
2129 hdev->name, fw->size);
2130 err = -EBADF;
2131 goto done;
2132 }
2133
2134 set_bit(BTUSB_DOWNLOADING, &data->flags);
2135
2136 /* Start the firmware download transaction with the Init fragment
2137 * represented by the 128 bytes of CSS header.
2138 */
2139 err = btintel_secure_send(hdev, 0x00, 128, fw->data);
2140 if (err < 0) {
2141 BT_ERR("%s: Failed to send firmware header (%d)",
2142 hdev->name, err);
2143 goto done;
2144 }
2145
2146 /* Send the 256 bytes of public key information from the firmware
2147 * as the PKey fragment.
2148 */
2149 err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128);
2150 if (err < 0) {
2151 BT_ERR("%s: Failed to send firmware public key (%d)",
2152 hdev->name, err);
2153 goto done;
2154 }
2155
2156 /* Send the 256 bytes of signature information from the firmware
2157 * as the Sign fragment.
2158 */
2159 err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388);
2160 if (err < 0) {
2161 BT_ERR("%s: Failed to send firmware signature (%d)",
2162 hdev->name, err);
2163 goto done;
2164 }
2165
2166 fw_ptr = fw->data + 644;
2167 frag_len = 0;
2168
2169 while (fw_ptr - fw->data < fw->size) {
2170 struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
2171
2172 frag_len += sizeof(*cmd) + cmd->plen;
2173
2174 /* The parameter length of the secure send command requires
2175 * a 4 byte alignment. It happens so that the firmware file
2176 * contains proper Intel_NOP commands to align the fragments
2177 * as needed.
2178 *
2179 * Send set of commands with 4 byte alignment from the
2180 * firmware data buffer as a single Data fragement.
2181 */
2182 if (!(frag_len % 4)) {
2183 err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr);
2184 if (err < 0) {
2185 BT_ERR("%s: Failed to send firmware data (%d)",
2186 hdev->name, err);
2187 goto done;
2188 }
2189
2190 fw_ptr += frag_len;
2191 frag_len = 0;
2192 }
2193 }
2194
2195 set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2196
2197 BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2198
2199 /* Before switching the device into operational mode and with that
2200 * booting the loaded firmware, wait for the bootloader notification
2201 * that all fragments have been successfully received.
2202 *
2203 * When the event processing receives the notification, then the
2204 * BTUSB_DOWNLOADING flag will be cleared.
2205 *
2206 * The firmware loading should not take longer than 5 seconds
2207 * and thus just timeout if that happens and fail the setup
2208 * of this device.
2209 */
2210 err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2211 TASK_INTERRUPTIBLE,
2212 msecs_to_jiffies(5000));
2213 if (err == 1) {
2214 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2215 err = -EINTR;
2216 goto done;
2217 }
2218
2219 if (err) {
2220 BT_ERR("%s: Firmware loading timeout", hdev->name);
2221 err = -ETIMEDOUT;
2222 goto done;
2223 }
2224
2225 if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2226 BT_ERR("%s: Firmware loading failed", hdev->name);
2227 err = -ENOEXEC;
2228 goto done;
2229 }
2230
2231 rettime = ktime_get();
2232 delta = ktime_sub(rettime, calltime);
2233 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2234
2235 BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2236
2237 done:
2238 release_firmware(fw);
2239
2240 if (err < 0)
2241 return err;
2242
2243 calltime = ktime_get();
2244
2245 set_bit(BTUSB_BOOTING, &data->flags);
2246
2247 skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2248 HCI_INIT_TIMEOUT);
2249 if (IS_ERR(skb))
2250 return PTR_ERR(skb);
2251
2252 kfree_skb(skb);
2253
2254 /* The bootloader will not indicate when the device is ready. This
2255 * is done by the operational firmware sending bootup notification.
2256 *
2257 * Booting into operational firmware should not take longer than
2258 * 1 second. However if that happens, then just fail the setup
2259 * since something went wrong.
2260 */
2261 BT_INFO("%s: Waiting for device to boot", hdev->name);
2262
2263 err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2264 TASK_INTERRUPTIBLE,
2265 msecs_to_jiffies(1000));
2266
2267 if (err == 1) {
2268 BT_ERR("%s: Device boot interrupted", hdev->name);
2269 return -EINTR;
2270 }
2271
2272 if (err) {
2273 BT_ERR("%s: Device boot timeout", hdev->name);
2274 return -ETIMEDOUT;
2275 }
2276
2277 rettime = ktime_get();
2278 delta = ktime_sub(rettime, calltime);
2279 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2280
2281 BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2282
2283 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2284
2285 /* Once the device is running in operational mode, it needs to apply
2286 * the device configuration (DDC) parameters.
2287 *
2288 * The device can work without DDC parameters, so even if it fails
2289 * to load the file, no need to fail the setup.
2290 */
2291 btintel_load_ddc_config(hdev, fwname);
2292
2293 /* Set the event mask for Intel specific vendor events. This enables
2294 * a few extra events that are useful during general operation. It
2295 * does not enable any debugging related events.
2296 *
2297 * The device will function correctly without these events enabled
2298 * and thus no need to fail the setup.
2299 */
2300 btintel_set_event_mask(hdev, false);
2301
2302 return 0;
2303 }
2304
2305 static int btusb_shutdown_intel(struct hci_dev *hdev)
2306 {
2307 struct sk_buff *skb;
2308 long ret;
2309
2310 /* Some platforms have an issue with BT LED when the interface is
2311 * down or BT radio is turned off, which takes 5 seconds to BT LED
2312 * goes off. This command turns off the BT LED immediately.
2313 */
2314 skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2315 if (IS_ERR(skb)) {
2316 ret = PTR_ERR(skb);
2317 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2318 hdev->name, ret);
2319 return ret;
2320 }
2321 kfree_skb(skb);
2322
2323 return 0;
2324 }
2325
2326 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2327 const bdaddr_t *bdaddr)
2328 {
2329 struct sk_buff *skb;
2330 u8 buf[8];
2331 long ret;
2332
2333 buf[0] = 0xfe;
2334 buf[1] = sizeof(bdaddr_t);
2335 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2336
2337 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2338 if (IS_ERR(skb)) {
2339 ret = PTR_ERR(skb);
2340 BT_ERR("%s: changing Marvell device address failed (%ld)",
2341 hdev->name, ret);
2342 return ret;
2343 }
2344 kfree_skb(skb);
2345
2346 return 0;
2347 }
2348
2349 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2350 const bdaddr_t *bdaddr)
2351 {
2352 struct sk_buff *skb;
2353 u8 buf[10];
2354 long ret;
2355
2356 buf[0] = 0x01;
2357 buf[1] = 0x01;
2358 buf[2] = 0x00;
2359 buf[3] = sizeof(bdaddr_t);
2360 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2361
2362 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2363 if (IS_ERR(skb)) {
2364 ret = PTR_ERR(skb);
2365 BT_ERR("%s: Change address command failed (%ld)",
2366 hdev->name, ret);
2367 return ret;
2368 }
2369 kfree_skb(skb);
2370
2371 return 0;
2372 }
2373
2374 #define QCA_DFU_PACKET_LEN 4096
2375
2376 #define QCA_GET_TARGET_VERSION 0x09
2377 #define QCA_CHECK_STATUS 0x05
2378 #define QCA_DFU_DOWNLOAD 0x01
2379
2380 #define QCA_SYSCFG_UPDATED 0x40
2381 #define QCA_PATCH_UPDATED 0x80
2382 #define QCA_DFU_TIMEOUT 3000
2383
2384 struct qca_version {
2385 __le32 rom_version;
2386 __le32 patch_version;
2387 __le32 ram_version;
2388 __le32 ref_clock;
2389 __u8 reserved[4];
2390 } __packed;
2391
2392 struct qca_rampatch_version {
2393 __le16 rom_version;
2394 __le16 patch_version;
2395 } __packed;
2396
2397 struct qca_device_info {
2398 u32 rom_version;
2399 u8 rampatch_hdr; /* length of header in rampatch */
2400 u8 nvm_hdr; /* length of header in NVM */
2401 u8 ver_offset; /* offset of version structure in rampatch */
2402 };
2403
2404 static const struct qca_device_info qca_devices_table[] = {
2405 { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2406 { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2407 { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2408 { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2409 { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2410 { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2411 };
2412
2413 static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request,
2414 void *data, u16 size)
2415 {
2416 struct btusb_data *btdata = hci_get_drvdata(hdev);
2417 struct usb_device *udev = btdata->udev;
2418 int pipe, err;
2419 u8 *buf;
2420
2421 buf = kmalloc(size, GFP_KERNEL);
2422 if (!buf)
2423 return -ENOMEM;
2424
2425 /* Found some of USB hosts have IOT issues with ours so that we should
2426 * not wait until HCI layer is ready.
2427 */
2428 pipe = usb_rcvctrlpipe(udev, 0);
2429 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2430 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2431 if (err < 0) {
2432 BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err);
2433 goto done;
2434 }
2435
2436 memcpy(data, buf, size);
2437
2438 done:
2439 kfree(buf);
2440
2441 return err;
2442 }
2443
2444 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2445 const struct firmware *firmware,
2446 size_t hdr_size)
2447 {
2448 struct btusb_data *btdata = hci_get_drvdata(hdev);
2449 struct usb_device *udev = btdata->udev;
2450 size_t count, size, sent = 0;
2451 int pipe, len, err;
2452 u8 *buf;
2453
2454 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2455 if (!buf)
2456 return -ENOMEM;
2457
2458 count = firmware->size;
2459
2460 size = min_t(size_t, count, hdr_size);
2461 memcpy(buf, firmware->data, size);
2462
2463 /* USB patches should go down to controller through USB path
2464 * because binary format fits to go down through USB channel.
2465 * USB control path is for patching headers and USB bulk is for
2466 * patch body.
2467 */
2468 pipe = usb_sndctrlpipe(udev, 0);
2469 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2470 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2471 if (err < 0) {
2472 BT_ERR("%s: Failed to send headers (%d)", hdev->name, err);
2473 goto done;
2474 }
2475
2476 sent += size;
2477 count -= size;
2478
2479 while (count) {
2480 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2481
2482 memcpy(buf, firmware->data + sent, size);
2483
2484 pipe = usb_sndbulkpipe(udev, 0x02);
2485 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2486 QCA_DFU_TIMEOUT);
2487 if (err < 0) {
2488 BT_ERR("%s: Failed to send body at %zd of %zd (%d)",
2489 hdev->name, sent, firmware->size, err);
2490 break;
2491 }
2492
2493 if (size != len) {
2494 BT_ERR("%s: Failed to get bulk buffer", hdev->name);
2495 err = -EILSEQ;
2496 break;
2497 }
2498
2499 sent += size;
2500 count -= size;
2501 }
2502
2503 done:
2504 kfree(buf);
2505 return err;
2506 }
2507
2508 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2509 struct qca_version *ver,
2510 const struct qca_device_info *info)
2511 {
2512 struct qca_rampatch_version *rver;
2513 const struct firmware *fw;
2514 u32 ver_rom, ver_patch;
2515 u16 rver_rom, rver_patch;
2516 char fwname[64];
2517 int err;
2518
2519 ver_rom = le32_to_cpu(ver->rom_version);
2520 ver_patch = le32_to_cpu(ver->patch_version);
2521
2522 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2523
2524 err = request_firmware(&fw, fwname, &hdev->dev);
2525 if (err) {
2526 BT_ERR("%s: failed to request rampatch file: %s (%d)",
2527 hdev->name, fwname, err);
2528 return err;
2529 }
2530
2531 BT_INFO("%s: using rampatch file: %s", hdev->name, fwname);
2532
2533 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2534 rver_rom = le16_to_cpu(rver->rom_version);
2535 rver_patch = le16_to_cpu(rver->patch_version);
2536
2537 BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x "
2538 "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom,
2539 ver_patch);
2540
2541 if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2542 BT_ERR("%s: rampatch file version did not match with firmware",
2543 hdev->name);
2544 err = -EINVAL;
2545 goto done;
2546 }
2547
2548 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2549
2550 done:
2551 release_firmware(fw);
2552
2553 return err;
2554 }
2555
2556 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2557 struct qca_version *ver,
2558 const struct qca_device_info *info)
2559 {
2560 const struct firmware *fw;
2561 char fwname[64];
2562 int err;
2563
2564 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2565 le32_to_cpu(ver->rom_version));
2566
2567 err = request_firmware(&fw, fwname, &hdev->dev);
2568 if (err) {
2569 BT_ERR("%s: failed to request NVM file: %s (%d)",
2570 hdev->name, fwname, err);
2571 return err;
2572 }
2573
2574 BT_INFO("%s: using NVM file: %s", hdev->name, fwname);
2575
2576 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2577
2578 release_firmware(fw);
2579
2580 return err;
2581 }
2582
2583 static int btusb_setup_qca(struct hci_dev *hdev)
2584 {
2585 const struct qca_device_info *info = NULL;
2586 struct qca_version ver;
2587 u32 ver_rom;
2588 u8 status;
2589 int i, err;
2590
2591 err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver,
2592 sizeof(ver));
2593 if (err < 0)
2594 return err;
2595
2596 ver_rom = le32_to_cpu(ver.rom_version);
2597 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2598 if (ver_rom == qca_devices_table[i].rom_version)
2599 info = &qca_devices_table[i];
2600 }
2601 if (!info) {
2602 BT_ERR("%s: don't support firmware rome 0x%x", hdev->name,
2603 ver_rom);
2604 return -ENODEV;
2605 }
2606
2607 err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status,
2608 sizeof(status));
2609 if (err < 0)
2610 return err;
2611
2612 if (!(status & QCA_PATCH_UPDATED)) {
2613 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2614 if (err < 0)
2615 return err;
2616 }
2617
2618 if (!(status & QCA_SYSCFG_UPDATED)) {
2619 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2620 if (err < 0)
2621 return err;
2622 }
2623
2624 return 0;
2625 }
2626
2627 #ifdef CONFIG_BT_HCIBTUSB_BCM
2628 static inline int __set_diag_interface(struct hci_dev *hdev)
2629 {
2630 struct btusb_data *data = hci_get_drvdata(hdev);
2631 struct usb_interface *intf = data->diag;
2632 int i;
2633
2634 if (!data->diag)
2635 return -ENODEV;
2636
2637 data->diag_tx_ep = NULL;
2638 data->diag_rx_ep = NULL;
2639
2640 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2641 struct usb_endpoint_descriptor *ep_desc;
2642
2643 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2644
2645 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2646 data->diag_tx_ep = ep_desc;
2647 continue;
2648 }
2649
2650 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2651 data->diag_rx_ep = ep_desc;
2652 continue;
2653 }
2654 }
2655
2656 if (!data->diag_tx_ep || !data->diag_rx_ep) {
2657 BT_ERR("%s invalid diagnostic descriptors", hdev->name);
2658 return -ENODEV;
2659 }
2660
2661 return 0;
2662 }
2663
2664 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
2665 {
2666 struct btusb_data *data = hci_get_drvdata(hdev);
2667 struct sk_buff *skb;
2668 struct urb *urb;
2669 unsigned int pipe;
2670
2671 if (!data->diag_tx_ep)
2672 return ERR_PTR(-ENODEV);
2673
2674 urb = usb_alloc_urb(0, GFP_KERNEL);
2675 if (!urb)
2676 return ERR_PTR(-ENOMEM);
2677
2678 skb = bt_skb_alloc(2, GFP_KERNEL);
2679 if (!skb) {
2680 usb_free_urb(urb);
2681 return ERR_PTR(-ENOMEM);
2682 }
2683
2684 *skb_put(skb, 1) = 0xf0;
2685 *skb_put(skb, 1) = enable;
2686
2687 pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
2688
2689 usb_fill_bulk_urb(urb, data->udev, pipe,
2690 skb->data, skb->len, btusb_tx_complete, skb);
2691
2692 skb->dev = (void *)hdev;
2693
2694 return urb;
2695 }
2696
2697 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
2698 {
2699 struct btusb_data *data = hci_get_drvdata(hdev);
2700 struct urb *urb;
2701
2702 if (!data->diag)
2703 return -ENODEV;
2704
2705 if (!test_bit(HCI_RUNNING, &hdev->flags))
2706 return -ENETDOWN;
2707
2708 urb = alloc_diag_urb(hdev, enable);
2709 if (IS_ERR(urb))
2710 return PTR_ERR(urb);
2711
2712 return submit_or_queue_tx_urb(hdev, urb);
2713 }
2714 #endif
2715
2716 static int btusb_probe(struct usb_interface *intf,
2717 const struct usb_device_id *id)
2718 {
2719 struct usb_endpoint_descriptor *ep_desc;
2720 struct btusb_data *data;
2721 struct hci_dev *hdev;
2722 unsigned ifnum_base;
2723 int i, err;
2724
2725 BT_DBG("intf %p id %p", intf, id);
2726
2727 /* interface numbers are hardcoded in the spec */
2728 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
2729 if (!(id->driver_info & BTUSB_IFNUM_2))
2730 return -ENODEV;
2731 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
2732 return -ENODEV;
2733 }
2734
2735 ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
2736
2737 if (!id->driver_info) {
2738 const struct usb_device_id *match;
2739
2740 match = usb_match_id(intf, blacklist_table);
2741 if (match)
2742 id = match;
2743 }
2744
2745 if (id->driver_info == BTUSB_IGNORE)
2746 return -ENODEV;
2747
2748 if (id->driver_info & BTUSB_ATH3012) {
2749 struct usb_device *udev = interface_to_usbdev(intf);
2750
2751 /* Old firmware would otherwise let ath3k driver load
2752 * patch and sysconfig files */
2753 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2754 return -ENODEV;
2755 }
2756
2757 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2758 if (!data)
2759 return -ENOMEM;
2760
2761 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2762 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2763
2764 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2765 data->intr_ep = ep_desc;
2766 continue;
2767 }
2768
2769 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2770 data->bulk_tx_ep = ep_desc;
2771 continue;
2772 }
2773
2774 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2775 data->bulk_rx_ep = ep_desc;
2776 continue;
2777 }
2778 }
2779
2780 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2781 return -ENODEV;
2782
2783 if (id->driver_info & BTUSB_AMP) {
2784 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2785 data->cmdreq = 0x2b;
2786 } else {
2787 data->cmdreq_type = USB_TYPE_CLASS;
2788 data->cmdreq = 0x00;
2789 }
2790
2791 data->udev = interface_to_usbdev(intf);
2792 data->intf = intf;
2793
2794 INIT_WORK(&data->work, btusb_work);
2795 INIT_WORK(&data->waker, btusb_waker);
2796 init_usb_anchor(&data->deferred);
2797 init_usb_anchor(&data->tx_anchor);
2798 spin_lock_init(&data->txlock);
2799
2800 init_usb_anchor(&data->intr_anchor);
2801 init_usb_anchor(&data->bulk_anchor);
2802 init_usb_anchor(&data->isoc_anchor);
2803 init_usb_anchor(&data->diag_anchor);
2804 spin_lock_init(&data->rxlock);
2805
2806 if (id->driver_info & BTUSB_INTEL_NEW) {
2807 data->recv_event = btusb_recv_event_intel;
2808 data->recv_bulk = btusb_recv_bulk_intel;
2809 set_bit(BTUSB_BOOTLOADER, &data->flags);
2810 } else {
2811 data->recv_event = hci_recv_frame;
2812 data->recv_bulk = btusb_recv_bulk;
2813 }
2814
2815 hdev = hci_alloc_dev();
2816 if (!hdev)
2817 return -ENOMEM;
2818
2819 hdev->bus = HCI_USB;
2820 hci_set_drvdata(hdev, data);
2821
2822 if (id->driver_info & BTUSB_AMP)
2823 hdev->dev_type = HCI_AMP;
2824 else
2825 hdev->dev_type = HCI_BREDR;
2826
2827 data->hdev = hdev;
2828
2829 SET_HCIDEV_DEV(hdev, &intf->dev);
2830
2831 hdev->open = btusb_open;
2832 hdev->close = btusb_close;
2833 hdev->flush = btusb_flush;
2834 hdev->send = btusb_send_frame;
2835 hdev->notify = btusb_notify;
2836
2837 if (id->driver_info & BTUSB_BCM2045)
2838 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2839
2840 if (id->driver_info & BTUSB_BCM92035)
2841 hdev->setup = btusb_setup_bcm92035;
2842
2843 #ifdef CONFIG_BT_HCIBTUSB_BCM
2844 if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2845 hdev->manufacturer = 15;
2846 hdev->setup = btbcm_setup_patchram;
2847 hdev->set_diag = btusb_bcm_set_diag;
2848 hdev->set_bdaddr = btbcm_set_bdaddr;
2849
2850 /* Broadcom LM_DIAG Interface numbers are hardcoded */
2851 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
2852 }
2853
2854 if (id->driver_info & BTUSB_BCM_APPLE) {
2855 hdev->manufacturer = 15;
2856 hdev->setup = btbcm_setup_apple;
2857 hdev->set_diag = btusb_bcm_set_diag;
2858
2859 /* Broadcom LM_DIAG Interface numbers are hardcoded */
2860 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
2861 }
2862 #endif
2863
2864 if (id->driver_info & BTUSB_INTEL) {
2865 hdev->manufacturer = 2;
2866 hdev->setup = btusb_setup_intel;
2867 hdev->shutdown = btusb_shutdown_intel;
2868 hdev->set_diag = btintel_set_diag_mfg;
2869 hdev->set_bdaddr = btintel_set_bdaddr;
2870 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2871 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2872 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
2873 }
2874
2875 if (id->driver_info & BTUSB_INTEL_NEW) {
2876 hdev->manufacturer = 2;
2877 hdev->send = btusb_send_frame_intel;
2878 hdev->setup = btusb_setup_intel_new;
2879 hdev->hw_error = btintel_hw_error;
2880 hdev->set_diag = btintel_set_diag;
2881 hdev->set_bdaddr = btintel_set_bdaddr;
2882 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2883 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
2884 }
2885
2886 if (id->driver_info & BTUSB_MARVELL)
2887 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2888
2889 if (id->driver_info & BTUSB_SWAVE) {
2890 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
2891 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
2892 }
2893
2894 if (id->driver_info & BTUSB_INTEL_BOOT) {
2895 hdev->manufacturer = 2;
2896 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2897 }
2898
2899 if (id->driver_info & BTUSB_ATH3012) {
2900 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2901 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2902 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2903 }
2904
2905 if (id->driver_info & BTUSB_QCA_ROME) {
2906 data->setup_on_usb = btusb_setup_qca;
2907 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2908 }
2909
2910 #ifdef CONFIG_BT_HCIBTUSB_RTL
2911 if (id->driver_info & BTUSB_REALTEK) {
2912 hdev->setup = btrtl_setup_realtek;
2913
2914 /* Realtek devices lose their updated firmware over suspend,
2915 * but the USB hub doesn't notice any status change.
2916 * Explicitly request a device reset on resume.
2917 */
2918 set_bit(BTUSB_RESET_RESUME, &data->flags);
2919 }
2920 #endif
2921
2922 if (id->driver_info & BTUSB_AMP) {
2923 /* AMP controllers do not support SCO packets */
2924 data->isoc = NULL;
2925 } else {
2926 /* Interface orders are hardcoded in the specification */
2927 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
2928 }
2929
2930 if (!reset)
2931 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2932
2933 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2934 if (!disable_scofix)
2935 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2936 }
2937
2938 if (id->driver_info & BTUSB_BROKEN_ISOC)
2939 data->isoc = NULL;
2940
2941 if (id->driver_info & BTUSB_DIGIANSWER) {
2942 data->cmdreq_type = USB_TYPE_VENDOR;
2943 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2944 }
2945
2946 if (id->driver_info & BTUSB_CSR) {
2947 struct usb_device *udev = data->udev;
2948 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
2949
2950 /* Old firmware would otherwise execute USB reset */
2951 if (bcdDevice < 0x117)
2952 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2953
2954 /* Fake CSR devices with broken commands */
2955 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
2956 hdev->setup = btusb_setup_csr;
2957
2958 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2959 }
2960
2961 if (id->driver_info & BTUSB_SNIFFER) {
2962 struct usb_device *udev = data->udev;
2963
2964 /* New sniffer firmware has crippled HCI interface */
2965 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
2966 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2967 }
2968
2969 if (id->driver_info & BTUSB_INTEL_BOOT) {
2970 /* A bug in the bootloader causes that interrupt interface is
2971 * only enabled after receiving SetInterface(0, AltSetting=0).
2972 */
2973 err = usb_set_interface(data->udev, 0, 0);
2974 if (err < 0) {
2975 BT_ERR("failed to set interface 0, alt 0 %d", err);
2976 hci_free_dev(hdev);
2977 return err;
2978 }
2979 }
2980
2981 if (data->isoc) {
2982 err = usb_driver_claim_interface(&btusb_driver,
2983 data->isoc, data);
2984 if (err < 0) {
2985 hci_free_dev(hdev);
2986 return err;
2987 }
2988 }
2989
2990 #ifdef CONFIG_BT_HCIBTUSB_BCM
2991 if (data->diag) {
2992 if (!usb_driver_claim_interface(&btusb_driver,
2993 data->diag, data))
2994 __set_diag_interface(hdev);
2995 else
2996 data->diag = NULL;
2997 }
2998 #endif
2999
3000 err = hci_register_dev(hdev);
3001 if (err < 0) {
3002 hci_free_dev(hdev);
3003 return err;
3004 }
3005
3006 usb_set_intfdata(intf, data);
3007
3008 return 0;
3009 }
3010
3011 static void btusb_disconnect(struct usb_interface *intf)
3012 {
3013 struct btusb_data *data = usb_get_intfdata(intf);
3014 struct hci_dev *hdev;
3015
3016 BT_DBG("intf %p", intf);
3017
3018 if (!data)
3019 return;
3020
3021 hdev = data->hdev;
3022 usb_set_intfdata(data->intf, NULL);
3023
3024 if (data->isoc)
3025 usb_set_intfdata(data->isoc, NULL);
3026
3027 if (data->diag)
3028 usb_set_intfdata(data->diag, NULL);
3029
3030 hci_unregister_dev(hdev);
3031
3032 if (intf == data->intf) {
3033 if (data->isoc)
3034 usb_driver_release_interface(&btusb_driver, data->isoc);
3035 if (data->diag)
3036 usb_driver_release_interface(&btusb_driver, data->diag);
3037 } else if (intf == data->isoc) {
3038 if (data->diag)
3039 usb_driver_release_interface(&btusb_driver, data->diag);
3040 usb_driver_release_interface(&btusb_driver, data->intf);
3041 } else if (intf == data->diag) {
3042 usb_driver_release_interface(&btusb_driver, data->intf);
3043 if (data->isoc)
3044 usb_driver_release_interface(&btusb_driver, data->isoc);
3045 }
3046
3047 hci_free_dev(hdev);
3048 }
3049
3050 #ifdef CONFIG_PM
3051 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3052 {
3053 struct btusb_data *data = usb_get_intfdata(intf);
3054
3055 BT_DBG("intf %p", intf);
3056
3057 if (data->suspend_count++)
3058 return 0;
3059
3060 spin_lock_irq(&data->txlock);
3061 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3062 set_bit(BTUSB_SUSPENDING, &data->flags);
3063 spin_unlock_irq(&data->txlock);
3064 } else {
3065 spin_unlock_irq(&data->txlock);
3066 data->suspend_count--;
3067 return -EBUSY;
3068 }
3069
3070 cancel_work_sync(&data->work);
3071
3072 btusb_stop_traffic(data);
3073 usb_kill_anchored_urbs(&data->tx_anchor);
3074
3075 /* Optionally request a device reset on resume, but only when
3076 * wakeups are disabled. If wakeups are enabled we assume the
3077 * device will stay powered up throughout suspend.
3078 */
3079 if (test_bit(BTUSB_RESET_RESUME, &data->flags) &&
3080 !device_may_wakeup(&data->udev->dev))
3081 data->udev->reset_resume = 1;
3082
3083 return 0;
3084 }
3085
3086 static void play_deferred(struct btusb_data *data)
3087 {
3088 struct urb *urb;
3089 int err;
3090
3091 while ((urb = usb_get_from_anchor(&data->deferred))) {
3092 err = usb_submit_urb(urb, GFP_ATOMIC);
3093 if (err < 0)
3094 break;
3095
3096 data->tx_in_flight++;
3097 }
3098 usb_scuttle_anchored_urbs(&data->deferred);
3099 }
3100
3101 static int btusb_resume(struct usb_interface *intf)
3102 {
3103 struct btusb_data *data = usb_get_intfdata(intf);
3104 struct hci_dev *hdev = data->hdev;
3105 int err = 0;
3106
3107 BT_DBG("intf %p", intf);
3108
3109 if (--data->suspend_count)
3110 return 0;
3111
3112 if (!test_bit(HCI_RUNNING, &hdev->flags))
3113 goto done;
3114
3115 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3116 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3117 if (err < 0) {
3118 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3119 goto failed;
3120 }
3121 }
3122
3123 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3124 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3125 if (err < 0) {
3126 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3127 goto failed;
3128 }
3129
3130 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3131 }
3132
3133 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3134 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3135 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3136 else
3137 btusb_submit_isoc_urb(hdev, GFP_NOIO);
3138 }
3139
3140 spin_lock_irq(&data->txlock);
3141 play_deferred(data);
3142 clear_bit(BTUSB_SUSPENDING, &data->flags);
3143 spin_unlock_irq(&data->txlock);
3144 schedule_work(&data->work);
3145
3146 return 0;
3147
3148 failed:
3149 usb_scuttle_anchored_urbs(&data->deferred);
3150 done:
3151 spin_lock_irq(&data->txlock);
3152 clear_bit(BTUSB_SUSPENDING, &data->flags);
3153 spin_unlock_irq(&data->txlock);
3154
3155 return err;
3156 }
3157 #endif
3158
3159 static struct usb_driver btusb_driver = {
3160 .name = "btusb",
3161 .probe = btusb_probe,
3162 .disconnect = btusb_disconnect,
3163 #ifdef CONFIG_PM
3164 .suspend = btusb_suspend,
3165 .resume = btusb_resume,
3166 #endif
3167 .id_table = btusb_table,
3168 .supports_autosuspend = 1,
3169 .disable_hub_initiated_lpm = 1,
3170 };
3171
3172 module_usb_driver(btusb_driver);
3173
3174 module_param(disable_scofix, bool, 0644);
3175 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3176
3177 module_param(force_scofix, bool, 0644);
3178 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3179
3180 module_param(reset, bool, 0644);
3181 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3182
3183 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3184 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3185 MODULE_VERSION(VERSION);
3186 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
This page took 0.172257 seconds and 6 git commands to generate.