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scripts/decode_stacktrace: match basepath using shell prefix operator, not regex
[linux/fpc-iii.git] / drivers / bluetooth / btusb.c
blob8dce1a8900788de6869ac9e2a4296bb5811c421e
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/usb/quirks.h>
27 #include <linux/firmware.h>
28 #include <asm/unaligned.h>
29
30 #include <net/bluetooth/bluetooth.h>
31 #include <net/bluetooth/hci_core.h>
32
33 #include "btintel.h"
34 #include "btbcm.h"
35 #include "btrtl.h"
36
37 #define VERSION "0.8"
38
39 static bool disable_scofix;
40 static bool force_scofix;
41
42 static bool reset = true;
43
44 static struct usb_driver btusb_driver;
45
46 #define BTUSB_IGNORE 0x01
47 #define BTUSB_DIGIANSWER 0x02
48 #define BTUSB_CSR 0x04
49 #define BTUSB_SNIFFER 0x08
50 #define BTUSB_BCM92035 0x10
51 #define BTUSB_BROKEN_ISOC 0x20
52 #define BTUSB_WRONG_SCO_MTU 0x40
53 #define BTUSB_ATH3012 0x80
54 #define BTUSB_INTEL 0x100
55 #define BTUSB_INTEL_BOOT 0x200
56 #define BTUSB_BCM_PATCHRAM 0x400
57 #define BTUSB_MARVELL 0x800
58 #define BTUSB_SWAVE 0x1000
59 #define BTUSB_INTEL_NEW 0x2000
60 #define BTUSB_AMP 0x4000
61 #define BTUSB_QCA_ROME 0x8000
62 #define BTUSB_BCM_APPLE 0x10000
63 #define BTUSB_REALTEK 0x20000
64 #define BTUSB_BCM2045 0x40000
65 #define BTUSB_IFNUM_2 0x80000
66 #define BTUSB_CW6622 0x100000
67
68 static const struct usb_device_id btusb_table[] = {
69 /* Generic Bluetooth USB device */
70 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
71
72 /* Generic Bluetooth AMP device */
73 { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
74
75 /* Generic Bluetooth USB interface */
76 { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
77
78 /* Apple-specific (Broadcom) devices */
79 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
80 .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
81
82 /* MediaTek MT76x0E */
83 { USB_DEVICE(0x0e8d, 0x763f) },
84
85 /* Broadcom SoftSailing reporting vendor specific */
86 { USB_DEVICE(0x0a5c, 0x21e1) },
87
88 /* Apple MacBookPro 7,1 */
89 { USB_DEVICE(0x05ac, 0x8213) },
90
91 /* Apple iMac11,1 */
92 { USB_DEVICE(0x05ac, 0x8215) },
93
94 /* Apple MacBookPro6,2 */
95 { USB_DEVICE(0x05ac, 0x8218) },
96
97 /* Apple MacBookAir3,1, MacBookAir3,2 */
98 { USB_DEVICE(0x05ac, 0x821b) },
99
100 /* Apple MacBookAir4,1 */
101 { USB_DEVICE(0x05ac, 0x821f) },
102
103 /* Apple MacBookPro8,2 */
104 { USB_DEVICE(0x05ac, 0x821a) },
105
106 /* Apple MacMini5,1 */
107 { USB_DEVICE(0x05ac, 0x8281) },
108
109 /* AVM BlueFRITZ! USB v2.0 */
110 { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
111
112 /* Bluetooth Ultraport Module from IBM */
113 { USB_DEVICE(0x04bf, 0x030a) },
114
115 /* ALPS Modules with non-standard id */
116 { USB_DEVICE(0x044e, 0x3001) },
117 { USB_DEVICE(0x044e, 0x3002) },
118
119 /* Ericsson with non-standard id */
120 { USB_DEVICE(0x0bdb, 0x1002) },
121
122 /* Canyon CN-BTU1 with HID interfaces */
123 { USB_DEVICE(0x0c10, 0x0000) },
124
125 /* Broadcom BCM20702A0 */
126 { USB_DEVICE(0x413c, 0x8197) },
127
128 /* Broadcom BCM20702B0 (Dynex/Insignia) */
129 { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
130
131 /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
132 { USB_DEVICE(0x105b, 0xe065), .driver_info = BTUSB_BCM_PATCHRAM },
133
134 /* Foxconn - Hon Hai */
135 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
136 .driver_info = BTUSB_BCM_PATCHRAM },
137
138 /* Lite-On Technology - Broadcom based */
139 { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
140 .driver_info = BTUSB_BCM_PATCHRAM },
141
142 /* Broadcom devices with vendor specific id */
143 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
144 .driver_info = BTUSB_BCM_PATCHRAM },
145
146 /* ASUSTek Computer - Broadcom based */
147 { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
148 .driver_info = BTUSB_BCM_PATCHRAM },
149
150 /* Belkin F8065bf - Broadcom based */
151 { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
152 .driver_info = BTUSB_BCM_PATCHRAM },
153
154 /* IMC Networks - Broadcom based */
155 { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
156 .driver_info = BTUSB_BCM_PATCHRAM },
157
158 /* Toshiba Corp - Broadcom based */
159 { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
160 .driver_info = BTUSB_BCM_PATCHRAM },
161
162 /* Intel Bluetooth USB Bootloader (RAM module) */
163 { USB_DEVICE(0x8087, 0x0a5a),
164 .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
165
166 { } /* Terminating entry */
167 };
168
169 MODULE_DEVICE_TABLE(usb, btusb_table);
170
171 static const struct usb_device_id blacklist_table[] = {
172 /* CSR BlueCore devices */
173 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
174
175 /* Broadcom BCM2033 without firmware */
176 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
177
178 /* Broadcom BCM2045 devices */
179 { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
180
181 /* Atheros 3011 with sflash firmware */
182 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
183 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
184 { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
185 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
186 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
187 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
188 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
189
190 /* Atheros AR9285 Malbec with sflash firmware */
191 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
192
193 /* Atheros 3012 with sflash firmware */
194 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
195 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
196 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
197 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
198 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
199 { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
200 { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
201 { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
202 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
203 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
204 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
205 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
206 { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
207 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
208 { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
209 { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
210 { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
211 { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
212 { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
213 { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
214 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
215 { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
216 { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
217 { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
218 { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
219 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
220 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
221 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
222 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
223 { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
224 { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
225 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
226 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
227 { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
228 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
229 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
230 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
231 { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
232 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
233 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
234 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
235 { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
236 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
237 { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
238 { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
239 { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
240 { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
241 { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
242 { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
243 { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
244
245 /* Atheros AR5BBU12 with sflash firmware */
246 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
247
248 /* Atheros AR5BBU12 with sflash firmware */
249 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
250 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
251
252 /* QCA ROME chipset */
253 { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
254 { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME },
255 { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
256 { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
257 { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME },
258 { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME },
259
260 /* Broadcom BCM2035 */
261 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
262 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
263 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
264
265 /* Broadcom BCM2045 */
266 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
267 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
268
269 /* IBM/Lenovo ThinkPad with Broadcom chip */
270 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
271 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
272
273 /* HP laptop with Broadcom chip */
274 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
275
276 /* Dell laptop with Broadcom chip */
277 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
278
279 /* Dell Wireless 370 and 410 devices */
280 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
281 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
282
283 /* Belkin F8T012 and F8T013 devices */
284 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
285 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
286
287 /* Asus WL-BTD202 device */
288 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
289
290 /* Kensington Bluetooth USB adapter */
291 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
292
293 /* RTX Telecom based adapters with buggy SCO support */
294 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
295 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
296
297 /* CONWISE Technology based adapters with buggy SCO support */
298 { USB_DEVICE(0x0e5e, 0x6622),
299 .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
300
301 /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
302 { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
303
304 /* Digianswer devices */
305 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
306 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
307
308 /* CSR BlueCore Bluetooth Sniffer */
309 { USB_DEVICE(0x0a12, 0x0002),
310 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
311
312 /* Frontline ComProbe Bluetooth Sniffer */
313 { USB_DEVICE(0x16d3, 0x0002),
314 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
315
316 /* Marvell Bluetooth devices */
317 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
318 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
319 { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
320
321 /* Intel Bluetooth devices */
322 { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
323 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
324 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
325 { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
326 { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL },
327
328 /* Other Intel Bluetooth devices */
329 { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
330 .driver_info = BTUSB_IGNORE },
331
332 /* Realtek Bluetooth devices */
333 { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
334 .driver_info = BTUSB_REALTEK },
335
336 /* Additional Realtek 8723AE Bluetooth devices */
337 { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
338 { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
339
340 /* Additional Realtek 8723BE Bluetooth devices */
341 { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
342 { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
343 { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
344 { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
345 { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
346 { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
347
348 /* Additional Realtek 8723BU Bluetooth devices */
349 { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
350
351 /* Additional Realtek 8723DE Bluetooth devices */
352 { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
353 { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
354
355 /* Additional Realtek 8821AE Bluetooth devices */
356 { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
357 { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
358 { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
359 { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
360 { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
361
362 /* Additional Realtek 8822BE Bluetooth devices */
363 { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
364
365 /* Silicon Wave based devices */
366 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
367
368 { } /* Terminating entry */
369 };
370
371 #define BTUSB_MAX_ISOC_FRAMES 10
372
373 #define BTUSB_INTR_RUNNING 0
374 #define BTUSB_BULK_RUNNING 1
375 #define BTUSB_ISOC_RUNNING 2
376 #define BTUSB_SUSPENDING 3
377 #define BTUSB_DID_ISO_RESUME 4
378 #define BTUSB_BOOTLOADER 5
379 #define BTUSB_DOWNLOADING 6
380 #define BTUSB_FIRMWARE_LOADED 7
381 #define BTUSB_FIRMWARE_FAILED 8
382 #define BTUSB_BOOTING 9
383 #define BTUSB_DIAG_RUNNING 10
384 #define BTUSB_OOB_WAKE_ENABLED 11
385
386 struct btusb_data {
387 struct hci_dev *hdev;
388 struct usb_device *udev;
389 struct usb_interface *intf;
390 struct usb_interface *isoc;
391 struct usb_interface *diag;
392
393 unsigned long flags;
394
395 struct work_struct work;
396 struct work_struct waker;
397
398 struct usb_anchor deferred;
399 struct usb_anchor tx_anchor;
400 int tx_in_flight;
401 spinlock_t txlock;
402
403 struct usb_anchor intr_anchor;
404 struct usb_anchor bulk_anchor;
405 struct usb_anchor isoc_anchor;
406 struct usb_anchor diag_anchor;
407 spinlock_t rxlock;
408
409 struct sk_buff *evt_skb;
410 struct sk_buff *acl_skb;
411 struct sk_buff *sco_skb;
412
413 struct usb_endpoint_descriptor *intr_ep;
414 struct usb_endpoint_descriptor *bulk_tx_ep;
415 struct usb_endpoint_descriptor *bulk_rx_ep;
416 struct usb_endpoint_descriptor *isoc_tx_ep;
417 struct usb_endpoint_descriptor *isoc_rx_ep;
418 struct usb_endpoint_descriptor *diag_tx_ep;
419 struct usb_endpoint_descriptor *diag_rx_ep;
420
421 __u8 cmdreq_type;
422 __u8 cmdreq;
423
424 unsigned int sco_num;
425 int isoc_altsetting;
426 int suspend_count;
427
428 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
429 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
430
431 int (*setup_on_usb)(struct hci_dev *hdev);
432 };
433
434 static inline void btusb_free_frags(struct btusb_data *data)
435 {
436 unsigned long flags;
437
438 spin_lock_irqsave(&data->rxlock, flags);
439
440 kfree_skb(data->evt_skb);
441 data->evt_skb = NULL;
442
443 kfree_skb(data->acl_skb);
444 data->acl_skb = NULL;
445
446 kfree_skb(data->sco_skb);
447 data->sco_skb = NULL;
448
449 spin_unlock_irqrestore(&data->rxlock, flags);
450 }
451
452 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
453 {
454 struct sk_buff *skb;
455 int err = 0;
456
457 spin_lock(&data->rxlock);
458 skb = data->evt_skb;
459
460 while (count) {
461 int len;
462
463 if (!skb) {
464 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
465 if (!skb) {
466 err = -ENOMEM;
467 break;
468 }
469
470 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
471 hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
472 }
473
474 len = min_t(uint, hci_skb_expect(skb), count);
475 memcpy(skb_put(skb, len), buffer, len);
476
477 count -= len;
478 buffer += len;
479 hci_skb_expect(skb) -= len;
480
481 if (skb->len == HCI_EVENT_HDR_SIZE) {
482 /* Complete event header */
483 hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
484
485 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
486 kfree_skb(skb);
487 skb = NULL;
488
489 err = -EILSEQ;
490 break;
491 }
492 }
493
494 if (!hci_skb_expect(skb)) {
495 /* Complete frame */
496 data->recv_event(data->hdev, skb);
497 skb = NULL;
498 }
499 }
500
501 data->evt_skb = skb;
502 spin_unlock(&data->rxlock);
503
504 return err;
505 }
506
507 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
508 {
509 struct sk_buff *skb;
510 int err = 0;
511
512 spin_lock(&data->rxlock);
513 skb = data->acl_skb;
514
515 while (count) {
516 int len;
517
518 if (!skb) {
519 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
520 if (!skb) {
521 err = -ENOMEM;
522 break;
523 }
524
525 hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
526 hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
527 }
528
529 len = min_t(uint, hci_skb_expect(skb), count);
530 memcpy(skb_put(skb, len), buffer, len);
531
532 count -= len;
533 buffer += len;
534 hci_skb_expect(skb) -= len;
535
536 if (skb->len == HCI_ACL_HDR_SIZE) {
537 __le16 dlen = hci_acl_hdr(skb)->dlen;
538
539 /* Complete ACL header */
540 hci_skb_expect(skb) = __le16_to_cpu(dlen);
541
542 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
543 kfree_skb(skb);
544 skb = NULL;
545
546 err = -EILSEQ;
547 break;
548 }
549 }
550
551 if (!hci_skb_expect(skb)) {
552 /* Complete frame */
553 hci_recv_frame(data->hdev, skb);
554 skb = NULL;
555 }
556 }
557
558 data->acl_skb = skb;
559 spin_unlock(&data->rxlock);
560
561 return err;
562 }
563
564 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
565 {
566 struct sk_buff *skb;
567 int err = 0;
568
569 spin_lock(&data->rxlock);
570 skb = data->sco_skb;
571
572 while (count) {
573 int len;
574
575 if (!skb) {
576 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
577 if (!skb) {
578 err = -ENOMEM;
579 break;
580 }
581
582 hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
583 hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
584 }
585
586 len = min_t(uint, hci_skb_expect(skb), count);
587 memcpy(skb_put(skb, len), buffer, len);
588
589 count -= len;
590 buffer += len;
591 hci_skb_expect(skb) -= len;
592
593 if (skb->len == HCI_SCO_HDR_SIZE) {
594 /* Complete SCO header */
595 hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
596
597 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
598 kfree_skb(skb);
599 skb = NULL;
600
601 err = -EILSEQ;
602 break;
603 }
604 }
605
606 if (!hci_skb_expect(skb)) {
607 /* Complete frame */
608 hci_recv_frame(data->hdev, skb);
609 skb = NULL;
610 }
611 }
612
613 data->sco_skb = skb;
614 spin_unlock(&data->rxlock);
615
616 return err;
617 }
618
619 static void btusb_intr_complete(struct urb *urb)
620 {
621 struct hci_dev *hdev = urb->context;
622 struct btusb_data *data = hci_get_drvdata(hdev);
623 int err;
624
625 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
626 urb->actual_length);
627
628 if (!test_bit(HCI_RUNNING, &hdev->flags))
629 return;
630
631 if (urb->status == 0) {
632 hdev->stat.byte_rx += urb->actual_length;
633
634 if (btusb_recv_intr(data, urb->transfer_buffer,
635 urb->actual_length) < 0) {
636 BT_ERR("%s corrupted event packet", hdev->name);
637 hdev->stat.err_rx++;
638 }
639 } else if (urb->status == -ENOENT) {
640 /* Avoid suspend failed when usb_kill_urb */
641 return;
642 }
643
644 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
645 return;
646
647 usb_mark_last_busy(data->udev);
648 usb_anchor_urb(urb, &data->intr_anchor);
649
650 err = usb_submit_urb(urb, GFP_ATOMIC);
651 if (err < 0) {
652 /* -EPERM: urb is being killed;
653 * -ENODEV: device got disconnected */
654 if (err != -EPERM && err != -ENODEV)
655 BT_ERR("%s urb %p failed to resubmit (%d)",
656 hdev->name, urb, -err);
657 usb_unanchor_urb(urb);
658 }
659 }
660
661 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
662 {
663 struct btusb_data *data = hci_get_drvdata(hdev);
664 struct urb *urb;
665 unsigned char *buf;
666 unsigned int pipe;
667 int err, size;
668
669 BT_DBG("%s", hdev->name);
670
671 if (!data->intr_ep)
672 return -ENODEV;
673
674 urb = usb_alloc_urb(0, mem_flags);
675 if (!urb)
676 return -ENOMEM;
677
678 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
679
680 buf = kmalloc(size, mem_flags);
681 if (!buf) {
682 usb_free_urb(urb);
683 return -ENOMEM;
684 }
685
686 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
687
688 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
689 btusb_intr_complete, hdev, data->intr_ep->bInterval);
690
691 urb->transfer_flags |= URB_FREE_BUFFER;
692
693 usb_anchor_urb(urb, &data->intr_anchor);
694
695 err = usb_submit_urb(urb, mem_flags);
696 if (err < 0) {
697 if (err != -EPERM && err != -ENODEV)
698 BT_ERR("%s urb %p submission failed (%d)",
699 hdev->name, urb, -err);
700 usb_unanchor_urb(urb);
701 }
702
703 usb_free_urb(urb);
704
705 return err;
706 }
707
708 static void btusb_bulk_complete(struct urb *urb)
709 {
710 struct hci_dev *hdev = urb->context;
711 struct btusb_data *data = hci_get_drvdata(hdev);
712 int err;
713
714 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
715 urb->actual_length);
716
717 if (!test_bit(HCI_RUNNING, &hdev->flags))
718 return;
719
720 if (urb->status == 0) {
721 hdev->stat.byte_rx += urb->actual_length;
722
723 if (data->recv_bulk(data, urb->transfer_buffer,
724 urb->actual_length) < 0) {
725 BT_ERR("%s corrupted ACL packet", hdev->name);
726 hdev->stat.err_rx++;
727 }
728 } else if (urb->status == -ENOENT) {
729 /* Avoid suspend failed when usb_kill_urb */
730 return;
731 }
732
733 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
734 return;
735
736 usb_anchor_urb(urb, &data->bulk_anchor);
737 usb_mark_last_busy(data->udev);
738
739 err = usb_submit_urb(urb, GFP_ATOMIC);
740 if (err < 0) {
741 /* -EPERM: urb is being killed;
742 * -ENODEV: device got disconnected */
743 if (err != -EPERM && err != -ENODEV)
744 BT_ERR("%s urb %p failed to resubmit (%d)",
745 hdev->name, urb, -err);
746 usb_unanchor_urb(urb);
747 }
748 }
749
750 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
751 {
752 struct btusb_data *data = hci_get_drvdata(hdev);
753 struct urb *urb;
754 unsigned char *buf;
755 unsigned int pipe;
756 int err, size = HCI_MAX_FRAME_SIZE;
757
758 BT_DBG("%s", hdev->name);
759
760 if (!data->bulk_rx_ep)
761 return -ENODEV;
762
763 urb = usb_alloc_urb(0, mem_flags);
764 if (!urb)
765 return -ENOMEM;
766
767 buf = kmalloc(size, mem_flags);
768 if (!buf) {
769 usb_free_urb(urb);
770 return -ENOMEM;
771 }
772
773 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
774
775 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
776 btusb_bulk_complete, hdev);
777
778 urb->transfer_flags |= URB_FREE_BUFFER;
779
780 usb_mark_last_busy(data->udev);
781 usb_anchor_urb(urb, &data->bulk_anchor);
782
783 err = usb_submit_urb(urb, mem_flags);
784 if (err < 0) {
785 if (err != -EPERM && err != -ENODEV)
786 BT_ERR("%s urb %p submission failed (%d)",
787 hdev->name, urb, -err);
788 usb_unanchor_urb(urb);
789 }
790
791 usb_free_urb(urb);
792
793 return err;
794 }
795
796 static void btusb_isoc_complete(struct urb *urb)
797 {
798 struct hci_dev *hdev = urb->context;
799 struct btusb_data *data = hci_get_drvdata(hdev);
800 int i, err;
801
802 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
803 urb->actual_length);
804
805 if (!test_bit(HCI_RUNNING, &hdev->flags))
806 return;
807
808 if (urb->status == 0) {
809 for (i = 0; i < urb->number_of_packets; i++) {
810 unsigned int offset = urb->iso_frame_desc[i].offset;
811 unsigned int length = urb->iso_frame_desc[i].actual_length;
812
813 if (urb->iso_frame_desc[i].status)
814 continue;
815
816 hdev->stat.byte_rx += length;
817
818 if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
819 length) < 0) {
820 BT_ERR("%s corrupted SCO packet", hdev->name);
821 hdev->stat.err_rx++;
822 }
823 }
824 } else if (urb->status == -ENOENT) {
825 /* Avoid suspend failed when usb_kill_urb */
826 return;
827 }
828
829 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
830 return;
831
832 usb_anchor_urb(urb, &data->isoc_anchor);
833
834 err = usb_submit_urb(urb, GFP_ATOMIC);
835 if (err < 0) {
836 /* -EPERM: urb is being killed;
837 * -ENODEV: device got disconnected */
838 if (err != -EPERM && err != -ENODEV)
839 BT_ERR("%s urb %p failed to resubmit (%d)",
840 hdev->name, urb, -err);
841 usb_unanchor_urb(urb);
842 }
843 }
844
845 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
846 {
847 int i, offset = 0;
848
849 BT_DBG("len %d mtu %d", len, mtu);
850
851 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
852 i++, offset += mtu, len -= mtu) {
853 urb->iso_frame_desc[i].offset = offset;
854 urb->iso_frame_desc[i].length = mtu;
855 }
856
857 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
858 urb->iso_frame_desc[i].offset = offset;
859 urb->iso_frame_desc[i].length = len;
860 i++;
861 }
862
863 urb->number_of_packets = i;
864 }
865
866 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
867 {
868 struct btusb_data *data = hci_get_drvdata(hdev);
869 struct urb *urb;
870 unsigned char *buf;
871 unsigned int pipe;
872 int err, size;
873
874 BT_DBG("%s", hdev->name);
875
876 if (!data->isoc_rx_ep)
877 return -ENODEV;
878
879 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
880 if (!urb)
881 return -ENOMEM;
882
883 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
884 BTUSB_MAX_ISOC_FRAMES;
885
886 buf = kmalloc(size, mem_flags);
887 if (!buf) {
888 usb_free_urb(urb);
889 return -ENOMEM;
890 }
891
892 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
893
894 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
895 hdev, data->isoc_rx_ep->bInterval);
896
897 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
898
899 __fill_isoc_descriptor(urb, size,
900 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
901
902 usb_anchor_urb(urb, &data->isoc_anchor);
903
904 err = usb_submit_urb(urb, mem_flags);
905 if (err < 0) {
906 if (err != -EPERM && err != -ENODEV)
907 BT_ERR("%s urb %p submission failed (%d)",
908 hdev->name, urb, -err);
909 usb_unanchor_urb(urb);
910 }
911
912 usb_free_urb(urb);
913
914 return err;
915 }
916
917 static void btusb_diag_complete(struct urb *urb)
918 {
919 struct hci_dev *hdev = urb->context;
920 struct btusb_data *data = hci_get_drvdata(hdev);
921 int err;
922
923 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
924 urb->actual_length);
925
926 if (urb->status == 0) {
927 struct sk_buff *skb;
928
929 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
930 if (skb) {
931 memcpy(skb_put(skb, urb->actual_length),
932 urb->transfer_buffer, urb->actual_length);
933 hci_recv_diag(hdev, skb);
934 }
935 } else if (urb->status == -ENOENT) {
936 /* Avoid suspend failed when usb_kill_urb */
937 return;
938 }
939
940 if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
941 return;
942
943 usb_anchor_urb(urb, &data->diag_anchor);
944 usb_mark_last_busy(data->udev);
945
946 err = usb_submit_urb(urb, GFP_ATOMIC);
947 if (err < 0) {
948 /* -EPERM: urb is being killed;
949 * -ENODEV: device got disconnected */
950 if (err != -EPERM && err != -ENODEV)
951 BT_ERR("%s urb %p failed to resubmit (%d)",
952 hdev->name, urb, -err);
953 usb_unanchor_urb(urb);
954 }
955 }
956
957 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
958 {
959 struct btusb_data *data = hci_get_drvdata(hdev);
960 struct urb *urb;
961 unsigned char *buf;
962 unsigned int pipe;
963 int err, size = HCI_MAX_FRAME_SIZE;
964
965 BT_DBG("%s", hdev->name);
966
967 if (!data->diag_rx_ep)
968 return -ENODEV;
969
970 urb = usb_alloc_urb(0, mem_flags);
971 if (!urb)
972 return -ENOMEM;
973
974 buf = kmalloc(size, mem_flags);
975 if (!buf) {
976 usb_free_urb(urb);
977 return -ENOMEM;
978 }
979
980 pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
981
982 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
983 btusb_diag_complete, hdev);
984
985 urb->transfer_flags |= URB_FREE_BUFFER;
986
987 usb_mark_last_busy(data->udev);
988 usb_anchor_urb(urb, &data->diag_anchor);
989
990 err = usb_submit_urb(urb, mem_flags);
991 if (err < 0) {
992 if (err != -EPERM && err != -ENODEV)
993 BT_ERR("%s urb %p submission failed (%d)",
994 hdev->name, urb, -err);
995 usb_unanchor_urb(urb);
996 }
997
998 usb_free_urb(urb);
999
1000 return err;
1001 }
1002
1003 static void btusb_tx_complete(struct urb *urb)
1004 {
1005 struct sk_buff *skb = urb->context;
1006 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1007 struct btusb_data *data = hci_get_drvdata(hdev);
1008
1009 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1010 urb->actual_length);
1011
1012 if (!test_bit(HCI_RUNNING, &hdev->flags))
1013 goto done;
1014
1015 if (!urb->status)
1016 hdev->stat.byte_tx += urb->transfer_buffer_length;
1017 else
1018 hdev->stat.err_tx++;
1019
1020 done:
1021 spin_lock(&data->txlock);
1022 data->tx_in_flight--;
1023 spin_unlock(&data->txlock);
1024
1025 kfree(urb->setup_packet);
1026
1027 kfree_skb(skb);
1028 }
1029
1030 static void btusb_isoc_tx_complete(struct urb *urb)
1031 {
1032 struct sk_buff *skb = urb->context;
1033 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1034
1035 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1036 urb->actual_length);
1037
1038 if (!test_bit(HCI_RUNNING, &hdev->flags))
1039 goto done;
1040
1041 if (!urb->status)
1042 hdev->stat.byte_tx += urb->transfer_buffer_length;
1043 else
1044 hdev->stat.err_tx++;
1045
1046 done:
1047 kfree(urb->setup_packet);
1048
1049 kfree_skb(skb);
1050 }
1051
1052 static int btusb_open(struct hci_dev *hdev)
1053 {
1054 struct btusb_data *data = hci_get_drvdata(hdev);
1055 int err;
1056
1057 BT_DBG("%s", hdev->name);
1058
1059 err = usb_autopm_get_interface(data->intf);
1060 if (err < 0)
1061 return err;
1062
1063 /* Patching USB firmware files prior to starting any URBs of HCI path
1064 * It is more safe to use USB bulk channel for downloading USB patch
1065 */
1066 if (data->setup_on_usb) {
1067 err = data->setup_on_usb(hdev);
1068 if (err < 0)
1069 return err;
1070 }
1071
1072 data->intf->needs_remote_wakeup = 1;
1073
1074 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1075 goto done;
1076
1077 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1078 if (err < 0)
1079 goto failed;
1080
1081 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1082 if (err < 0) {
1083 usb_kill_anchored_urbs(&data->intr_anchor);
1084 goto failed;
1085 }
1086
1087 set_bit(BTUSB_BULK_RUNNING, &data->flags);
1088 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1089
1090 if (data->diag) {
1091 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1092 set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1093 }
1094
1095 done:
1096 usb_autopm_put_interface(data->intf);
1097 return 0;
1098
1099 failed:
1100 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1101 usb_autopm_put_interface(data->intf);
1102 return err;
1103 }
1104
1105 static void btusb_stop_traffic(struct btusb_data *data)
1106 {
1107 usb_kill_anchored_urbs(&data->intr_anchor);
1108 usb_kill_anchored_urbs(&data->bulk_anchor);
1109 usb_kill_anchored_urbs(&data->isoc_anchor);
1110 usb_kill_anchored_urbs(&data->diag_anchor);
1111 }
1112
1113 static int btusb_close(struct hci_dev *hdev)
1114 {
1115 struct btusb_data *data = hci_get_drvdata(hdev);
1116 int err;
1117
1118 BT_DBG("%s", hdev->name);
1119
1120 cancel_work_sync(&data->work);
1121 cancel_work_sync(&data->waker);
1122
1123 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1124 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1125 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1126 clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1127
1128 btusb_stop_traffic(data);
1129 btusb_free_frags(data);
1130
1131 err = usb_autopm_get_interface(data->intf);
1132 if (err < 0)
1133 goto failed;
1134
1135 data->intf->needs_remote_wakeup = 0;
1136 usb_autopm_put_interface(data->intf);
1137
1138 failed:
1139 usb_scuttle_anchored_urbs(&data->deferred);
1140 return 0;
1141 }
1142
1143 static int btusb_flush(struct hci_dev *hdev)
1144 {
1145 struct btusb_data *data = hci_get_drvdata(hdev);
1146
1147 BT_DBG("%s", hdev->name);
1148
1149 usb_kill_anchored_urbs(&data->tx_anchor);
1150 btusb_free_frags(data);
1151
1152 return 0;
1153 }
1154
1155 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1156 {
1157 struct btusb_data *data = hci_get_drvdata(hdev);
1158 struct usb_ctrlrequest *dr;
1159 struct urb *urb;
1160 unsigned int pipe;
1161
1162 urb = usb_alloc_urb(0, GFP_KERNEL);
1163 if (!urb)
1164 return ERR_PTR(-ENOMEM);
1165
1166 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1167 if (!dr) {
1168 usb_free_urb(urb);
1169 return ERR_PTR(-ENOMEM);
1170 }
1171
1172 dr->bRequestType = data->cmdreq_type;
1173 dr->bRequest = data->cmdreq;
1174 dr->wIndex = 0;
1175 dr->wValue = 0;
1176 dr->wLength = __cpu_to_le16(skb->len);
1177
1178 pipe = usb_sndctrlpipe(data->udev, 0x00);
1179
1180 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
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_bulk_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->bulk_tx_ep)
1195 return ERR_PTR(-ENODEV);
1196
1197 urb = usb_alloc_urb(0, GFP_KERNEL);
1198 if (!urb)
1199 return ERR_PTR(-ENOMEM);
1200
1201 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1202
1203 usb_fill_bulk_urb(urb, data->udev, pipe,
1204 skb->data, skb->len, btusb_tx_complete, skb);
1205
1206 skb->dev = (void *)hdev;
1207
1208 return urb;
1209 }
1210
1211 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1212 {
1213 struct btusb_data *data = hci_get_drvdata(hdev);
1214 struct urb *urb;
1215 unsigned int pipe;
1216
1217 if (!data->isoc_tx_ep)
1218 return ERR_PTR(-ENODEV);
1219
1220 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1221 if (!urb)
1222 return ERR_PTR(-ENOMEM);
1223
1224 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1225
1226 usb_fill_int_urb(urb, data->udev, pipe,
1227 skb->data, skb->len, btusb_isoc_tx_complete,
1228 skb, data->isoc_tx_ep->bInterval);
1229
1230 urb->transfer_flags = URB_ISO_ASAP;
1231
1232 __fill_isoc_descriptor(urb, skb->len,
1233 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1234
1235 skb->dev = (void *)hdev;
1236
1237 return urb;
1238 }
1239
1240 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1241 {
1242 struct btusb_data *data = hci_get_drvdata(hdev);
1243 int err;
1244
1245 usb_anchor_urb(urb, &data->tx_anchor);
1246
1247 err = usb_submit_urb(urb, GFP_KERNEL);
1248 if (err < 0) {
1249 if (err != -EPERM && err != -ENODEV)
1250 BT_ERR("%s urb %p submission failed (%d)",
1251 hdev->name, urb, -err);
1252 kfree(urb->setup_packet);
1253 usb_unanchor_urb(urb);
1254 } else {
1255 usb_mark_last_busy(data->udev);
1256 }
1257
1258 usb_free_urb(urb);
1259 return err;
1260 }
1261
1262 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1263 {
1264 struct btusb_data *data = hci_get_drvdata(hdev);
1265 unsigned long flags;
1266 bool suspending;
1267
1268 spin_lock_irqsave(&data->txlock, flags);
1269 suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1270 if (!suspending)
1271 data->tx_in_flight++;
1272 spin_unlock_irqrestore(&data->txlock, flags);
1273
1274 if (!suspending)
1275 return submit_tx_urb(hdev, urb);
1276
1277 usb_anchor_urb(urb, &data->deferred);
1278 schedule_work(&data->waker);
1279
1280 usb_free_urb(urb);
1281 return 0;
1282 }
1283
1284 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1285 {
1286 struct urb *urb;
1287
1288 BT_DBG("%s", hdev->name);
1289
1290 switch (hci_skb_pkt_type(skb)) {
1291 case HCI_COMMAND_PKT:
1292 urb = alloc_ctrl_urb(hdev, skb);
1293 if (IS_ERR(urb))
1294 return PTR_ERR(urb);
1295
1296 hdev->stat.cmd_tx++;
1297 return submit_or_queue_tx_urb(hdev, urb);
1298
1299 case HCI_ACLDATA_PKT:
1300 urb = alloc_bulk_urb(hdev, skb);
1301 if (IS_ERR(urb))
1302 return PTR_ERR(urb);
1303
1304 hdev->stat.acl_tx++;
1305 return submit_or_queue_tx_urb(hdev, urb);
1306
1307 case HCI_SCODATA_PKT:
1308 if (hci_conn_num(hdev, SCO_LINK) < 1)
1309 return -ENODEV;
1310
1311 urb = alloc_isoc_urb(hdev, skb);
1312 if (IS_ERR(urb))
1313 return PTR_ERR(urb);
1314
1315 hdev->stat.sco_tx++;
1316 return submit_tx_urb(hdev, urb);
1317 }
1318
1319 return -EILSEQ;
1320 }
1321
1322 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1323 {
1324 struct btusb_data *data = hci_get_drvdata(hdev);
1325
1326 BT_DBG("%s evt %d", hdev->name, evt);
1327
1328 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1329 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1330 schedule_work(&data->work);
1331 }
1332 }
1333
1334 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1335 {
1336 struct btusb_data *data = hci_get_drvdata(hdev);
1337 struct usb_interface *intf = data->isoc;
1338 struct usb_endpoint_descriptor *ep_desc;
1339 int i, err;
1340
1341 if (!data->isoc)
1342 return -ENODEV;
1343
1344 err = usb_set_interface(data->udev, 1, altsetting);
1345 if (err < 0) {
1346 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1347 return err;
1348 }
1349
1350 data->isoc_altsetting = altsetting;
1351
1352 data->isoc_tx_ep = NULL;
1353 data->isoc_rx_ep = NULL;
1354
1355 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1356 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1357
1358 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1359 data->isoc_tx_ep = ep_desc;
1360 continue;
1361 }
1362
1363 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1364 data->isoc_rx_ep = ep_desc;
1365 continue;
1366 }
1367 }
1368
1369 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1370 BT_ERR("%s invalid SCO descriptors", hdev->name);
1371 return -ENODEV;
1372 }
1373
1374 return 0;
1375 }
1376
1377 static void btusb_work(struct work_struct *work)
1378 {
1379 struct btusb_data *data = container_of(work, struct btusb_data, work);
1380 struct hci_dev *hdev = data->hdev;
1381 int new_alts;
1382 int err;
1383
1384 if (data->sco_num > 0) {
1385 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1386 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1387 if (err < 0) {
1388 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1389 usb_kill_anchored_urbs(&data->isoc_anchor);
1390 return;
1391 }
1392
1393 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1394 }
1395
1396 if (hdev->voice_setting & 0x0020) {
1397 static const int alts[3] = { 2, 4, 5 };
1398
1399 new_alts = alts[data->sco_num - 1];
1400 } else {
1401 new_alts = data->sco_num;
1402 }
1403
1404 if (data->isoc_altsetting != new_alts) {
1405 unsigned long flags;
1406
1407 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1408 usb_kill_anchored_urbs(&data->isoc_anchor);
1409
1410 /* When isochronous alternate setting needs to be
1411 * changed, because SCO connection has been added
1412 * or removed, a packet fragment may be left in the
1413 * reassembling state. This could lead to wrongly
1414 * assembled fragments.
1415 *
1416 * Clear outstanding fragment when selecting a new
1417 * alternate setting.
1418 */
1419 spin_lock_irqsave(&data->rxlock, flags);
1420 kfree_skb(data->sco_skb);
1421 data->sco_skb = NULL;
1422 spin_unlock_irqrestore(&data->rxlock, flags);
1423
1424 if (__set_isoc_interface(hdev, new_alts) < 0)
1425 return;
1426 }
1427
1428 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1429 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1430 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1431 else
1432 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1433 }
1434 } else {
1435 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1436 usb_kill_anchored_urbs(&data->isoc_anchor);
1437
1438 __set_isoc_interface(hdev, 0);
1439 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1440 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1441 }
1442 }
1443
1444 static void btusb_waker(struct work_struct *work)
1445 {
1446 struct btusb_data *data = container_of(work, struct btusb_data, waker);
1447 int err;
1448
1449 err = usb_autopm_get_interface(data->intf);
1450 if (err < 0)
1451 return;
1452
1453 usb_autopm_put_interface(data->intf);
1454 }
1455
1456 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1457 {
1458 struct sk_buff *skb;
1459 u8 val = 0x00;
1460
1461 BT_DBG("%s", hdev->name);
1462
1463 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1464 if (IS_ERR(skb))
1465 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1466 else
1467 kfree_skb(skb);
1468
1469 return 0;
1470 }
1471
1472 static int btusb_setup_csr(struct hci_dev *hdev)
1473 {
1474 struct hci_rp_read_local_version *rp;
1475 struct sk_buff *skb;
1476
1477 BT_DBG("%s", hdev->name);
1478
1479 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1480 HCI_INIT_TIMEOUT);
1481 if (IS_ERR(skb)) {
1482 int err = PTR_ERR(skb);
1483 BT_ERR("%s: CSR: Local version failed (%d)", hdev->name, err);
1484 return err;
1485 }
1486
1487 if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1488 BT_ERR("%s: CSR: Local version length mismatch", hdev->name);
1489 kfree_skb(skb);
1490 return -EIO;
1491 }
1492
1493 rp = (struct hci_rp_read_local_version *)skb->data;
1494
1495 /* Detect controllers which aren't real CSR ones. */
1496 if (le16_to_cpu(rp->manufacturer) != 10 ||
1497 le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1498 /* Clear the reset quirk since this is not an actual
1499 * early Bluetooth 1.1 device from CSR.
1500 */
1501 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1502
1503 /* These fake CSR controllers have all a broken
1504 * stored link key handling and so just disable it.
1505 */
1506 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1507 }
1508
1509 kfree_skb(skb);
1510
1511 return 0;
1512 }
1513
1514 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1515 struct intel_version *ver)
1516 {
1517 const struct firmware *fw;
1518 char fwname[64];
1519 int ret;
1520
1521 snprintf(fwname, sizeof(fwname),
1522 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1523 ver->hw_platform, ver->hw_variant, ver->hw_revision,
1524 ver->fw_variant, ver->fw_revision, ver->fw_build_num,
1525 ver->fw_build_ww, ver->fw_build_yy);
1526
1527 ret = request_firmware(&fw, fwname, &hdev->dev);
1528 if (ret < 0) {
1529 if (ret == -EINVAL) {
1530 BT_ERR("%s Intel firmware file request failed (%d)",
1531 hdev->name, ret);
1532 return NULL;
1533 }
1534
1535 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1536 hdev->name, fwname, ret);
1537
1538 /* If the correct firmware patch file is not found, use the
1539 * default firmware patch file instead
1540 */
1541 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1542 ver->hw_platform, ver->hw_variant);
1543 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1544 BT_ERR("%s failed to open default Intel fw file: %s",
1545 hdev->name, fwname);
1546 return NULL;
1547 }
1548 }
1549
1550 BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1551
1552 return fw;
1553 }
1554
1555 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1556 const struct firmware *fw,
1557 const u8 **fw_ptr, int *disable_patch)
1558 {
1559 struct sk_buff *skb;
1560 struct hci_command_hdr *cmd;
1561 const u8 *cmd_param;
1562 struct hci_event_hdr *evt = NULL;
1563 const u8 *evt_param = NULL;
1564 int remain = fw->size - (*fw_ptr - fw->data);
1565
1566 /* The first byte indicates the types of the patch command or event.
1567 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1568 * in the current firmware buffer doesn't start with 0x01 or
1569 * the size of remain buffer is smaller than HCI command header,
1570 * the firmware file is corrupted and it should stop the patching
1571 * process.
1572 */
1573 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1574 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1575 return -EINVAL;
1576 }
1577 (*fw_ptr)++;
1578 remain--;
1579
1580 cmd = (struct hci_command_hdr *)(*fw_ptr);
1581 *fw_ptr += sizeof(*cmd);
1582 remain -= sizeof(*cmd);
1583
1584 /* Ensure that the remain firmware data is long enough than the length
1585 * of command parameter. If not, the firmware file is corrupted.
1586 */
1587 if (remain < cmd->plen) {
1588 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1589 return -EFAULT;
1590 }
1591
1592 /* If there is a command that loads a patch in the firmware
1593 * file, then enable the patch upon success, otherwise just
1594 * disable the manufacturer mode, for example patch activation
1595 * is not required when the default firmware patch file is used
1596 * because there are no patch data to load.
1597 */
1598 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1599 *disable_patch = 0;
1600
1601 cmd_param = *fw_ptr;
1602 *fw_ptr += cmd->plen;
1603 remain -= cmd->plen;
1604
1605 /* This reads the expected events when the above command is sent to the
1606 * device. Some vendor commands expects more than one events, for
1607 * example command status event followed by vendor specific event.
1608 * For this case, it only keeps the last expected event. so the command
1609 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1610 * last expected event.
1611 */
1612 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1613 (*fw_ptr)++;
1614 remain--;
1615
1616 evt = (struct hci_event_hdr *)(*fw_ptr);
1617 *fw_ptr += sizeof(*evt);
1618 remain -= sizeof(*evt);
1619
1620 if (remain < evt->plen) {
1621 BT_ERR("%s Intel fw corrupted: invalid evt len",
1622 hdev->name);
1623 return -EFAULT;
1624 }
1625
1626 evt_param = *fw_ptr;
1627 *fw_ptr += evt->plen;
1628 remain -= evt->plen;
1629 }
1630
1631 /* Every HCI commands in the firmware file has its correspond event.
1632 * If event is not found or remain is smaller than zero, the firmware
1633 * file is corrupted.
1634 */
1635 if (!evt || !evt_param || remain < 0) {
1636 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1637 return -EFAULT;
1638 }
1639
1640 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1641 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1642 if (IS_ERR(skb)) {
1643 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1644 hdev->name, cmd->opcode, PTR_ERR(skb));
1645 return PTR_ERR(skb);
1646 }
1647
1648 /* It ensures that the returned event matches the event data read from
1649 * the firmware file. At fist, it checks the length and then
1650 * the contents of the event.
1651 */
1652 if (skb->len != evt->plen) {
1653 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1654 le16_to_cpu(cmd->opcode));
1655 kfree_skb(skb);
1656 return -EFAULT;
1657 }
1658
1659 if (memcmp(skb->data, evt_param, evt->plen)) {
1660 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1661 hdev->name, le16_to_cpu(cmd->opcode));
1662 kfree_skb(skb);
1663 return -EFAULT;
1664 }
1665 kfree_skb(skb);
1666
1667 return 0;
1668 }
1669
1670 static int btusb_setup_intel(struct hci_dev *hdev)
1671 {
1672 struct sk_buff *skb;
1673 const struct firmware *fw;
1674 const u8 *fw_ptr;
1675 int disable_patch, err;
1676 struct intel_version ver;
1677
1678 BT_DBG("%s", hdev->name);
1679
1680 /* The controller has a bug with the first HCI command sent to it
1681 * returning number of completed commands as zero. This would stall the
1682 * command processing in the Bluetooth core.
1683 *
1684 * As a workaround, send HCI Reset command first which will reset the
1685 * number of completed commands and allow normal command processing
1686 * from now on.
1687 */
1688 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1689 if (IS_ERR(skb)) {
1690 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1691 hdev->name, PTR_ERR(skb));
1692 return PTR_ERR(skb);
1693 }
1694 kfree_skb(skb);
1695
1696 /* Read Intel specific controller version first to allow selection of
1697 * which firmware file to load.
1698 *
1699 * The returned information are hardware variant and revision plus
1700 * firmware variant, revision and build number.
1701 */
1702 err = btintel_read_version(hdev, &ver);
1703 if (err)
1704 return err;
1705
1706 BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1707 hdev->name, ver.hw_platform, ver.hw_variant, ver.hw_revision,
1708 ver.fw_variant, ver.fw_revision, ver.fw_build_num,
1709 ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
1710
1711 /* fw_patch_num indicates the version of patch the device currently
1712 * have. If there is no patch data in the device, it is always 0x00.
1713 * So, if it is other than 0x00, no need to patch the device again.
1714 */
1715 if (ver.fw_patch_num) {
1716 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1717 hdev->name, ver.fw_patch_num);
1718 goto complete;
1719 }
1720
1721 /* Opens the firmware patch file based on the firmware version read
1722 * from the controller. If it fails to open the matching firmware
1723 * patch file, it tries to open the default firmware patch file.
1724 * If no patch file is found, allow the device to operate without
1725 * a patch.
1726 */
1727 fw = btusb_setup_intel_get_fw(hdev, &ver);
1728 if (!fw)
1729 goto complete;
1730 fw_ptr = fw->data;
1731
1732 /* Enable the manufacturer mode of the controller.
1733 * Only while this mode is enabled, the driver can download the
1734 * firmware patch data and configuration parameters.
1735 */
1736 err = btintel_enter_mfg(hdev);
1737 if (err) {
1738 release_firmware(fw);
1739 return err;
1740 }
1741
1742 disable_patch = 1;
1743
1744 /* The firmware data file consists of list of Intel specific HCI
1745 * commands and its expected events. The first byte indicates the
1746 * type of the message, either HCI command or HCI event.
1747 *
1748 * It reads the command and its expected event from the firmware file,
1749 * and send to the controller. Once __hci_cmd_sync_ev() returns,
1750 * the returned event is compared with the event read from the firmware
1751 * file and it will continue until all the messages are downloaded to
1752 * the controller.
1753 *
1754 * Once the firmware patching is completed successfully,
1755 * the manufacturer mode is disabled with reset and activating the
1756 * downloaded patch.
1757 *
1758 * If the firmware patching fails, the manufacturer mode is
1759 * disabled with reset and deactivating the patch.
1760 *
1761 * If the default patch file is used, no reset is done when disabling
1762 * the manufacturer.
1763 */
1764 while (fw->size > fw_ptr - fw->data) {
1765 int ret;
1766
1767 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1768 &disable_patch);
1769 if (ret < 0)
1770 goto exit_mfg_deactivate;
1771 }
1772
1773 release_firmware(fw);
1774
1775 if (disable_patch)
1776 goto exit_mfg_disable;
1777
1778 /* Patching completed successfully and disable the manufacturer mode
1779 * with reset and activate the downloaded firmware patches.
1780 */
1781 err = btintel_exit_mfg(hdev, true, true);
1782 if (err)
1783 return err;
1784
1785 BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1786 hdev->name);
1787
1788 goto complete;
1789
1790 exit_mfg_disable:
1791 /* Disable the manufacturer mode without reset */
1792 err = btintel_exit_mfg(hdev, false, false);
1793 if (err)
1794 return err;
1795
1796 BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1797
1798 goto complete;
1799
1800 exit_mfg_deactivate:
1801 release_firmware(fw);
1802
1803 /* Patching failed. Disable the manufacturer mode with reset and
1804 * deactivate the downloaded firmware patches.
1805 */
1806 err = btintel_exit_mfg(hdev, true, false);
1807 if (err)
1808 return err;
1809
1810 BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1811 hdev->name);
1812
1813 complete:
1814 /* Set the event mask for Intel specific vendor events. This enables
1815 * a few extra events that are useful during general operation.
1816 */
1817 btintel_set_event_mask_mfg(hdev, false);
1818
1819 btintel_check_bdaddr(hdev);
1820 return 0;
1821 }
1822
1823 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1824 {
1825 struct sk_buff *skb;
1826 struct hci_event_hdr *hdr;
1827 struct hci_ev_cmd_complete *evt;
1828
1829 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1830 if (!skb)
1831 return -ENOMEM;
1832
1833 hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
1834 hdr->evt = HCI_EV_CMD_COMPLETE;
1835 hdr->plen = sizeof(*evt) + 1;
1836
1837 evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
1838 evt->ncmd = 0x01;
1839 evt->opcode = cpu_to_le16(opcode);
1840
1841 *skb_put(skb, 1) = 0x00;
1842
1843 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
1844
1845 return hci_recv_frame(hdev, skb);
1846 }
1847
1848 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1849 int count)
1850 {
1851 /* When the device is in bootloader mode, then it can send
1852 * events via the bulk endpoint. These events are treated the
1853 * same way as the ones received from the interrupt endpoint.
1854 */
1855 if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1856 return btusb_recv_intr(data, buffer, count);
1857
1858 return btusb_recv_bulk(data, buffer, count);
1859 }
1860
1861 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1862 unsigned int len)
1863 {
1864 const struct intel_bootup *evt = ptr;
1865
1866 if (len != sizeof(*evt))
1867 return;
1868
1869 if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1870 smp_mb__after_atomic();
1871 wake_up_bit(&data->flags, BTUSB_BOOTING);
1872 }
1873 }
1874
1875 static void btusb_intel_secure_send_result(struct btusb_data *data,
1876 const void *ptr, unsigned int len)
1877 {
1878 const struct intel_secure_send_result *evt = ptr;
1879
1880 if (len != sizeof(*evt))
1881 return;
1882
1883 if (evt->result)
1884 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1885
1886 if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1887 test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1888 smp_mb__after_atomic();
1889 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1890 }
1891 }
1892
1893 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1894 {
1895 struct btusb_data *data = hci_get_drvdata(hdev);
1896
1897 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1898 struct hci_event_hdr *hdr = (void *)skb->data;
1899
1900 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1901 hdr->plen > 0) {
1902 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1903 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1904
1905 switch (skb->data[2]) {
1906 case 0x02:
1907 /* When switching to the operational firmware
1908 * the device sends a vendor specific event
1909 * indicating that the bootup completed.
1910 */
1911 btusb_intel_bootup(data, ptr, len);
1912 break;
1913 case 0x06:
1914 /* When the firmware loading completes the
1915 * device sends out a vendor specific event
1916 * indicating the result of the firmware
1917 * loading.
1918 */
1919 btusb_intel_secure_send_result(data, ptr, len);
1920 break;
1921 }
1922 }
1923 }
1924
1925 return hci_recv_frame(hdev, skb);
1926 }
1927
1928 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1929 {
1930 struct btusb_data *data = hci_get_drvdata(hdev);
1931 struct urb *urb;
1932
1933 BT_DBG("%s", hdev->name);
1934
1935 switch (hci_skb_pkt_type(skb)) {
1936 case HCI_COMMAND_PKT:
1937 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1938 struct hci_command_hdr *cmd = (void *)skb->data;
1939 __u16 opcode = le16_to_cpu(cmd->opcode);
1940
1941 /* When in bootloader mode and the command 0xfc09
1942 * is received, it needs to be send down the
1943 * bulk endpoint. So allocate a bulk URB instead.
1944 */
1945 if (opcode == 0xfc09)
1946 urb = alloc_bulk_urb(hdev, skb);
1947 else
1948 urb = alloc_ctrl_urb(hdev, skb);
1949
1950 /* When the 0xfc01 command is issued to boot into
1951 * the operational firmware, it will actually not
1952 * send a command complete event. To keep the flow
1953 * control working inject that event here.
1954 */
1955 if (opcode == 0xfc01)
1956 inject_cmd_complete(hdev, opcode);
1957 } else {
1958 urb = alloc_ctrl_urb(hdev, skb);
1959 }
1960 if (IS_ERR(urb))
1961 return PTR_ERR(urb);
1962
1963 hdev->stat.cmd_tx++;
1964 return submit_or_queue_tx_urb(hdev, urb);
1965
1966 case HCI_ACLDATA_PKT:
1967 urb = alloc_bulk_urb(hdev, skb);
1968 if (IS_ERR(urb))
1969 return PTR_ERR(urb);
1970
1971 hdev->stat.acl_tx++;
1972 return submit_or_queue_tx_urb(hdev, urb);
1973
1974 case HCI_SCODATA_PKT:
1975 if (hci_conn_num(hdev, SCO_LINK) < 1)
1976 return -ENODEV;
1977
1978 urb = alloc_isoc_urb(hdev, skb);
1979 if (IS_ERR(urb))
1980 return PTR_ERR(urb);
1981
1982 hdev->stat.sco_tx++;
1983 return submit_tx_urb(hdev, urb);
1984 }
1985
1986 return -EILSEQ;
1987 }
1988
1989 static int btusb_setup_intel_new(struct hci_dev *hdev)
1990 {
1991 static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
1992 0x00, 0x08, 0x04, 0x00 };
1993 struct btusb_data *data = hci_get_drvdata(hdev);
1994 struct sk_buff *skb;
1995 struct intel_version ver;
1996 struct intel_boot_params *params;
1997 const struct firmware *fw;
1998 const u8 *fw_ptr;
1999 u32 frag_len;
2000 char fwname[64];
2001 ktime_t calltime, delta, rettime;
2002 unsigned long long duration;
2003 int err;
2004
2005 BT_DBG("%s", hdev->name);
2006
2007 calltime = ktime_get();
2008
2009 /* Read the Intel version information to determine if the device
2010 * is in bootloader mode or if it already has operational firmware
2011 * loaded.
2012 */
2013 err = btintel_read_version(hdev, &ver);
2014 if (err)
2015 return err;
2016
2017 /* The hardware platform number has a fixed value of 0x37 and
2018 * for now only accept this single value.
2019 */
2020 if (ver.hw_platform != 0x37) {
2021 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
2022 hdev->name, ver.hw_platform);
2023 return -EINVAL;
2024 }
2025
2026 /* At the moment the iBT 3.0 hardware variants 0x0b (LnP/SfP)
2027 * and 0x0c (WsP) are supported by this firmware loading method.
2028 *
2029 * This check has been put in place to ensure correct forward
2030 * compatibility options when newer hardware variants come along.
2031 */
2032 if (ver.hw_variant != 0x0b && ver.hw_variant != 0x0c) {
2033 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
2034 hdev->name, ver.hw_variant);
2035 return -EINVAL;
2036 }
2037
2038 btintel_version_info(hdev, &ver);
2039
2040 /* The firmware variant determines if the device is in bootloader
2041 * mode or is running operational firmware. The value 0x06 identifies
2042 * the bootloader and the value 0x23 identifies the operational
2043 * firmware.
2044 *
2045 * When the operational firmware is already present, then only
2046 * the check for valid Bluetooth device address is needed. This
2047 * determines if the device will be added as configured or
2048 * unconfigured controller.
2049 *
2050 * It is not possible to use the Secure Boot Parameters in this
2051 * case since that command is only available in bootloader mode.
2052 */
2053 if (ver.fw_variant == 0x23) {
2054 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2055 btintel_check_bdaddr(hdev);
2056 return 0;
2057 }
2058
2059 /* If the device is not in bootloader mode, then the only possible
2060 * choice is to return an error and abort the device initialization.
2061 */
2062 if (ver.fw_variant != 0x06) {
2063 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2064 hdev->name, ver.fw_variant);
2065 return -ENODEV;
2066 }
2067
2068 /* Read the secure boot parameters to identify the operating
2069 * details of the bootloader.
2070 */
2071 skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2072 if (IS_ERR(skb)) {
2073 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2074 hdev->name, PTR_ERR(skb));
2075 return PTR_ERR(skb);
2076 }
2077
2078 if (skb->len != sizeof(*params)) {
2079 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2080 kfree_skb(skb);
2081 return -EILSEQ;
2082 }
2083
2084 params = (struct intel_boot_params *)skb->data;
2085
2086 BT_INFO("%s: Device revision is %u", hdev->name,
2087 le16_to_cpu(params->dev_revid));
2088
2089 BT_INFO("%s: Secure boot is %s", hdev->name,
2090 params->secure_boot ? "enabled" : "disabled");
2091
2092 BT_INFO("%s: OTP lock is %s", hdev->name,
2093 params->otp_lock ? "enabled" : "disabled");
2094
2095 BT_INFO("%s: API lock is %s", hdev->name,
2096 params->api_lock ? "enabled" : "disabled");
2097
2098 BT_INFO("%s: Debug lock is %s", hdev->name,
2099 params->debug_lock ? "enabled" : "disabled");
2100
2101 BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2102 params->min_fw_build_nn, params->min_fw_build_cw,
2103 2000 + params->min_fw_build_yy);
2104
2105 /* It is required that every single firmware fragment is acknowledged
2106 * with a command complete event. If the boot parameters indicate
2107 * that this bootloader does not send them, then abort the setup.
2108 */
2109 if (params->limited_cce != 0x00) {
2110 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2111 hdev->name, params->limited_cce);
2112 kfree_skb(skb);
2113 return -EINVAL;
2114 }
2115
2116 /* If the OTP has no valid Bluetooth device address, then there will
2117 * also be no valid address for the operational firmware.
2118 */
2119 if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2120 BT_INFO("%s: No device address configured", hdev->name);
2121 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2122 }
2123
2124 /* With this Intel bootloader only the hardware variant and device
2125 * revision information are used to select the right firmware.
2126 *
2127 * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2128 *
2129 * Currently the supported hardware variants are:
2130 * 11 (0x0b) for iBT3.0 (LnP/SfP)
2131 * 12 (0x0c) for iBT3.5 (WsP)
2132 */
2133 snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.sfi",
2134 le16_to_cpu(ver.hw_variant),
2135 le16_to_cpu(params->dev_revid));
2136
2137 err = request_firmware(&fw, fwname, &hdev->dev);
2138 if (err < 0) {
2139 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2140 hdev->name, err);
2141 kfree_skb(skb);
2142 return err;
2143 }
2144
2145 BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2146
2147 /* Save the DDC file name for later use to apply once the firmware
2148 * downloading is done.
2149 */
2150 snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.ddc",
2151 le16_to_cpu(ver.hw_variant),
2152 le16_to_cpu(params->dev_revid));
2153
2154 kfree_skb(skb);
2155
2156 if (fw->size < 644) {
2157 BT_ERR("%s: Invalid size of firmware file (%zu)",
2158 hdev->name, fw->size);
2159 err = -EBADF;
2160 goto done;
2161 }
2162
2163 set_bit(BTUSB_DOWNLOADING, &data->flags);
2164
2165 /* Start the firmware download transaction with the Init fragment
2166 * represented by the 128 bytes of CSS header.
2167 */
2168 err = btintel_secure_send(hdev, 0x00, 128, fw->data);
2169 if (err < 0) {
2170 BT_ERR("%s: Failed to send firmware header (%d)",
2171 hdev->name, err);
2172 goto done;
2173 }
2174
2175 /* Send the 256 bytes of public key information from the firmware
2176 * as the PKey fragment.
2177 */
2178 err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128);
2179 if (err < 0) {
2180 BT_ERR("%s: Failed to send firmware public key (%d)",
2181 hdev->name, err);
2182 goto done;
2183 }
2184
2185 /* Send the 256 bytes of signature information from the firmware
2186 * as the Sign fragment.
2187 */
2188 err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388);
2189 if (err < 0) {
2190 BT_ERR("%s: Failed to send firmware signature (%d)",
2191 hdev->name, err);
2192 goto done;
2193 }
2194
2195 fw_ptr = fw->data + 644;
2196 frag_len = 0;
2197
2198 while (fw_ptr - fw->data < fw->size) {
2199 struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
2200
2201 frag_len += sizeof(*cmd) + cmd->plen;
2202
2203 /* The parameter length of the secure send command requires
2204 * a 4 byte alignment. It happens so that the firmware file
2205 * contains proper Intel_NOP commands to align the fragments
2206 * as needed.
2207 *
2208 * Send set of commands with 4 byte alignment from the
2209 * firmware data buffer as a single Data fragement.
2210 */
2211 if (!(frag_len % 4)) {
2212 err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr);
2213 if (err < 0) {
2214 BT_ERR("%s: Failed to send firmware data (%d)",
2215 hdev->name, err);
2216 goto done;
2217 }
2218
2219 fw_ptr += frag_len;
2220 frag_len = 0;
2221 }
2222 }
2223
2224 set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2225
2226 BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2227
2228 /* Before switching the device into operational mode and with that
2229 * booting the loaded firmware, wait for the bootloader notification
2230 * that all fragments have been successfully received.
2231 *
2232 * When the event processing receives the notification, then the
2233 * BTUSB_DOWNLOADING flag will be cleared.
2234 *
2235 * The firmware loading should not take longer than 5 seconds
2236 * and thus just timeout if that happens and fail the setup
2237 * of this device.
2238 */
2239 err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2240 TASK_INTERRUPTIBLE,
2241 msecs_to_jiffies(5000));
2242 if (err == -EINTR) {
2243 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2244 goto done;
2245 }
2246
2247 if (err) {
2248 BT_ERR("%s: Firmware loading timeout", hdev->name);
2249 err = -ETIMEDOUT;
2250 goto done;
2251 }
2252
2253 if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2254 BT_ERR("%s: Firmware loading failed", hdev->name);
2255 err = -ENOEXEC;
2256 goto done;
2257 }
2258
2259 rettime = ktime_get();
2260 delta = ktime_sub(rettime, calltime);
2261 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2262
2263 BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2264
2265 done:
2266 release_firmware(fw);
2267
2268 if (err < 0)
2269 return err;
2270
2271 calltime = ktime_get();
2272
2273 set_bit(BTUSB_BOOTING, &data->flags);
2274
2275 skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2276 HCI_INIT_TIMEOUT);
2277 if (IS_ERR(skb))
2278 return PTR_ERR(skb);
2279
2280 kfree_skb(skb);
2281
2282 /* The bootloader will not indicate when the device is ready. This
2283 * is done by the operational firmware sending bootup notification.
2284 *
2285 * Booting into operational firmware should not take longer than
2286 * 1 second. However if that happens, then just fail the setup
2287 * since something went wrong.
2288 */
2289 BT_INFO("%s: Waiting for device to boot", hdev->name);
2290
2291 err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2292 TASK_INTERRUPTIBLE,
2293 msecs_to_jiffies(1000));
2294
2295 if (err == -EINTR) {
2296 BT_ERR("%s: Device boot interrupted", hdev->name);
2297 return -EINTR;
2298 }
2299
2300 if (err) {
2301 BT_ERR("%s: Device boot timeout", hdev->name);
2302 return -ETIMEDOUT;
2303 }
2304
2305 rettime = ktime_get();
2306 delta = ktime_sub(rettime, calltime);
2307 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2308
2309 BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2310
2311 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2312
2313 /* Once the device is running in operational mode, it needs to apply
2314 * the device configuration (DDC) parameters.
2315 *
2316 * The device can work without DDC parameters, so even if it fails
2317 * to load the file, no need to fail the setup.
2318 */
2319 btintel_load_ddc_config(hdev, fwname);
2320
2321 /* Set the event mask for Intel specific vendor events. This enables
2322 * a few extra events that are useful during general operation. It
2323 * does not enable any debugging related events.
2324 *
2325 * The device will function correctly without these events enabled
2326 * and thus no need to fail the setup.
2327 */
2328 btintel_set_event_mask(hdev, false);
2329
2330 return 0;
2331 }
2332
2333 static int btusb_shutdown_intel(struct hci_dev *hdev)
2334 {
2335 struct sk_buff *skb;
2336 long ret;
2337
2338 /* Some platforms have an issue with BT LED when the interface is
2339 * down or BT radio is turned off, which takes 5 seconds to BT LED
2340 * goes off. This command turns off the BT LED immediately.
2341 */
2342 skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2343 if (IS_ERR(skb)) {
2344 ret = PTR_ERR(skb);
2345 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2346 hdev->name, ret);
2347 return ret;
2348 }
2349 kfree_skb(skb);
2350
2351 return 0;
2352 }
2353
2354 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2355 const bdaddr_t *bdaddr)
2356 {
2357 struct sk_buff *skb;
2358 u8 buf[8];
2359 long ret;
2360
2361 buf[0] = 0xfe;
2362 buf[1] = sizeof(bdaddr_t);
2363 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2364
2365 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2366 if (IS_ERR(skb)) {
2367 ret = PTR_ERR(skb);
2368 BT_ERR("%s: changing Marvell device address failed (%ld)",
2369 hdev->name, ret);
2370 return ret;
2371 }
2372 kfree_skb(skb);
2373
2374 return 0;
2375 }
2376
2377 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2378 const bdaddr_t *bdaddr)
2379 {
2380 struct sk_buff *skb;
2381 u8 buf[10];
2382 long ret;
2383
2384 buf[0] = 0x01;
2385 buf[1] = 0x01;
2386 buf[2] = 0x00;
2387 buf[3] = sizeof(bdaddr_t);
2388 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2389
2390 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2391 if (IS_ERR(skb)) {
2392 ret = PTR_ERR(skb);
2393 BT_ERR("%s: Change address command failed (%ld)",
2394 hdev->name, ret);
2395 return ret;
2396 }
2397 kfree_skb(skb);
2398
2399 return 0;
2400 }
2401
2402 #define QCA_DFU_PACKET_LEN 4096
2403
2404 #define QCA_GET_TARGET_VERSION 0x09
2405 #define QCA_CHECK_STATUS 0x05
2406 #define QCA_DFU_DOWNLOAD 0x01
2407
2408 #define QCA_SYSCFG_UPDATED 0x40
2409 #define QCA_PATCH_UPDATED 0x80
2410 #define QCA_DFU_TIMEOUT 3000
2411
2412 struct qca_version {
2413 __le32 rom_version;
2414 __le32 patch_version;
2415 __le32 ram_version;
2416 __le32 ref_clock;
2417 __u8 reserved[4];
2418 } __packed;
2419
2420 struct qca_rampatch_version {
2421 __le16 rom_version;
2422 __le16 patch_version;
2423 } __packed;
2424
2425 struct qca_device_info {
2426 u32 rom_version;
2427 u8 rampatch_hdr; /* length of header in rampatch */
2428 u8 nvm_hdr; /* length of header in NVM */
2429 u8 ver_offset; /* offset of version structure in rampatch */
2430 };
2431
2432 static const struct qca_device_info qca_devices_table[] = {
2433 { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2434 { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2435 { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2436 { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2437 { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2438 { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2439 };
2440
2441 static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request,
2442 void *data, u16 size)
2443 {
2444 struct btusb_data *btdata = hci_get_drvdata(hdev);
2445 struct usb_device *udev = btdata->udev;
2446 int pipe, err;
2447 u8 *buf;
2448
2449 buf = kmalloc(size, GFP_KERNEL);
2450 if (!buf)
2451 return -ENOMEM;
2452
2453 /* Found some of USB hosts have IOT issues with ours so that we should
2454 * not wait until HCI layer is ready.
2455 */
2456 pipe = usb_rcvctrlpipe(udev, 0);
2457 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2458 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2459 if (err < 0) {
2460 BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err);
2461 goto done;
2462 }
2463
2464 memcpy(data, buf, size);
2465
2466 done:
2467 kfree(buf);
2468
2469 return err;
2470 }
2471
2472 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2473 const struct firmware *firmware,
2474 size_t hdr_size)
2475 {
2476 struct btusb_data *btdata = hci_get_drvdata(hdev);
2477 struct usb_device *udev = btdata->udev;
2478 size_t count, size, sent = 0;
2479 int pipe, len, err;
2480 u8 *buf;
2481
2482 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2483 if (!buf)
2484 return -ENOMEM;
2485
2486 count = firmware->size;
2487
2488 size = min_t(size_t, count, hdr_size);
2489 memcpy(buf, firmware->data, size);
2490
2491 /* USB patches should go down to controller through USB path
2492 * because binary format fits to go down through USB channel.
2493 * USB control path is for patching headers and USB bulk is for
2494 * patch body.
2495 */
2496 pipe = usb_sndctrlpipe(udev, 0);
2497 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2498 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2499 if (err < 0) {
2500 BT_ERR("%s: Failed to send headers (%d)", hdev->name, err);
2501 goto done;
2502 }
2503
2504 sent += size;
2505 count -= size;
2506
2507 while (count) {
2508 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2509
2510 memcpy(buf, firmware->data + sent, size);
2511
2512 pipe = usb_sndbulkpipe(udev, 0x02);
2513 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2514 QCA_DFU_TIMEOUT);
2515 if (err < 0) {
2516 BT_ERR("%s: Failed to send body at %zd of %zd (%d)",
2517 hdev->name, sent, firmware->size, err);
2518 break;
2519 }
2520
2521 if (size != len) {
2522 BT_ERR("%s: Failed to get bulk buffer", hdev->name);
2523 err = -EILSEQ;
2524 break;
2525 }
2526
2527 sent += size;
2528 count -= size;
2529 }
2530
2531 done:
2532 kfree(buf);
2533 return err;
2534 }
2535
2536 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2537 struct qca_version *ver,
2538 const struct qca_device_info *info)
2539 {
2540 struct qca_rampatch_version *rver;
2541 const struct firmware *fw;
2542 u32 ver_rom, ver_patch;
2543 u16 rver_rom, rver_patch;
2544 char fwname[64];
2545 int err;
2546
2547 ver_rom = le32_to_cpu(ver->rom_version);
2548 ver_patch = le32_to_cpu(ver->patch_version);
2549
2550 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2551
2552 err = request_firmware(&fw, fwname, &hdev->dev);
2553 if (err) {
2554 BT_ERR("%s: failed to request rampatch file: %s (%d)",
2555 hdev->name, fwname, err);
2556 return err;
2557 }
2558
2559 BT_INFO("%s: using rampatch file: %s", hdev->name, fwname);
2560
2561 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2562 rver_rom = le16_to_cpu(rver->rom_version);
2563 rver_patch = le16_to_cpu(rver->patch_version);
2564
2565 BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x "
2566 "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom,
2567 ver_patch);
2568
2569 if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2570 BT_ERR("%s: rampatch file version did not match with firmware",
2571 hdev->name);
2572 err = -EINVAL;
2573 goto done;
2574 }
2575
2576 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2577
2578 done:
2579 release_firmware(fw);
2580
2581 return err;
2582 }
2583
2584 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2585 struct qca_version *ver,
2586 const struct qca_device_info *info)
2587 {
2588 const struct firmware *fw;
2589 char fwname[64];
2590 int err;
2591
2592 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2593 le32_to_cpu(ver->rom_version));
2594
2595 err = request_firmware(&fw, fwname, &hdev->dev);
2596 if (err) {
2597 BT_ERR("%s: failed to request NVM file: %s (%d)",
2598 hdev->name, fwname, err);
2599 return err;
2600 }
2601
2602 BT_INFO("%s: using NVM file: %s", hdev->name, fwname);
2603
2604 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2605
2606 release_firmware(fw);
2607
2608 return err;
2609 }
2610
2611 static int btusb_setup_qca(struct hci_dev *hdev)
2612 {
2613 const struct qca_device_info *info = NULL;
2614 struct qca_version ver;
2615 u32 ver_rom;
2616 u8 status;
2617 int i, err;
2618
2619 err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver,
2620 sizeof(ver));
2621 if (err < 0)
2622 return err;
2623
2624 ver_rom = le32_to_cpu(ver.rom_version);
2625 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2626 if (ver_rom == qca_devices_table[i].rom_version)
2627 info = &qca_devices_table[i];
2628 }
2629 if (!info) {
2630 BT_ERR("%s: don't support firmware rome 0x%x", hdev->name,
2631 ver_rom);
2632 return -ENODEV;
2633 }
2634
2635 err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status,
2636 sizeof(status));
2637 if (err < 0)
2638 return err;
2639
2640 if (!(status & QCA_PATCH_UPDATED)) {
2641 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2642 if (err < 0)
2643 return err;
2644 }
2645
2646 if (!(status & QCA_SYSCFG_UPDATED)) {
2647 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2648 if (err < 0)
2649 return err;
2650 }
2651
2652 return 0;
2653 }
2654
2655 #ifdef CONFIG_BT_HCIBTUSB_BCM
2656 static inline int __set_diag_interface(struct hci_dev *hdev)
2657 {
2658 struct btusb_data *data = hci_get_drvdata(hdev);
2659 struct usb_interface *intf = data->diag;
2660 int i;
2661
2662 if (!data->diag)
2663 return -ENODEV;
2664
2665 data->diag_tx_ep = NULL;
2666 data->diag_rx_ep = NULL;
2667
2668 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2669 struct usb_endpoint_descriptor *ep_desc;
2670
2671 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2672
2673 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2674 data->diag_tx_ep = ep_desc;
2675 continue;
2676 }
2677
2678 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2679 data->diag_rx_ep = ep_desc;
2680 continue;
2681 }
2682 }
2683
2684 if (!data->diag_tx_ep || !data->diag_rx_ep) {
2685 BT_ERR("%s invalid diagnostic descriptors", hdev->name);
2686 return -ENODEV;
2687 }
2688
2689 return 0;
2690 }
2691
2692 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
2693 {
2694 struct btusb_data *data = hci_get_drvdata(hdev);
2695 struct sk_buff *skb;
2696 struct urb *urb;
2697 unsigned int pipe;
2698
2699 if (!data->diag_tx_ep)
2700 return ERR_PTR(-ENODEV);
2701
2702 urb = usb_alloc_urb(0, GFP_KERNEL);
2703 if (!urb)
2704 return ERR_PTR(-ENOMEM);
2705
2706 skb = bt_skb_alloc(2, GFP_KERNEL);
2707 if (!skb) {
2708 usb_free_urb(urb);
2709 return ERR_PTR(-ENOMEM);
2710 }
2711
2712 *skb_put(skb, 1) = 0xf0;
2713 *skb_put(skb, 1) = enable;
2714
2715 pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
2716
2717 usb_fill_bulk_urb(urb, data->udev, pipe,
2718 skb->data, skb->len, btusb_tx_complete, skb);
2719
2720 skb->dev = (void *)hdev;
2721
2722 return urb;
2723 }
2724
2725 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
2726 {
2727 struct btusb_data *data = hci_get_drvdata(hdev);
2728 struct urb *urb;
2729
2730 if (!data->diag)
2731 return -ENODEV;
2732
2733 if (!test_bit(HCI_RUNNING, &hdev->flags))
2734 return -ENETDOWN;
2735
2736 urb = alloc_diag_urb(hdev, enable);
2737 if (IS_ERR(urb))
2738 return PTR_ERR(urb);
2739
2740 return submit_or_queue_tx_urb(hdev, urb);
2741 }
2742 #endif
2743
2744 static int btusb_probe(struct usb_interface *intf,
2745 const struct usb_device_id *id)
2746 {
2747 struct usb_endpoint_descriptor *ep_desc;
2748 struct btusb_data *data;
2749 struct hci_dev *hdev;
2750 unsigned ifnum_base;
2751 int i, err;
2752
2753 BT_DBG("intf %p id %p", intf, id);
2754
2755 /* interface numbers are hardcoded in the spec */
2756 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
2757 if (!(id->driver_info & BTUSB_IFNUM_2))
2758 return -ENODEV;
2759 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
2760 return -ENODEV;
2761 }
2762
2763 ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
2764
2765 if (!id->driver_info) {
2766 const struct usb_device_id *match;
2767
2768 match = usb_match_id(intf, blacklist_table);
2769 if (match)
2770 id = match;
2771 }
2772
2773 if (id->driver_info == BTUSB_IGNORE)
2774 return -ENODEV;
2775
2776 if (id->driver_info & BTUSB_ATH3012) {
2777 struct usb_device *udev = interface_to_usbdev(intf);
2778
2779 /* Old firmware would otherwise let ath3k driver load
2780 * patch and sysconfig files */
2781 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2782 return -ENODEV;
2783 }
2784
2785 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2786 if (!data)
2787 return -ENOMEM;
2788
2789 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2790 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2791
2792 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2793 data->intr_ep = ep_desc;
2794 continue;
2795 }
2796
2797 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2798 data->bulk_tx_ep = ep_desc;
2799 continue;
2800 }
2801
2802 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2803 data->bulk_rx_ep = ep_desc;
2804 continue;
2805 }
2806 }
2807
2808 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2809 return -ENODEV;
2810
2811 if (id->driver_info & BTUSB_AMP) {
2812 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2813 data->cmdreq = 0x2b;
2814 } else {
2815 data->cmdreq_type = USB_TYPE_CLASS;
2816 data->cmdreq = 0x00;
2817 }
2818
2819 data->udev = interface_to_usbdev(intf);
2820 data->intf = intf;
2821
2822 INIT_WORK(&data->work, btusb_work);
2823 INIT_WORK(&data->waker, btusb_waker);
2824 init_usb_anchor(&data->deferred);
2825 init_usb_anchor(&data->tx_anchor);
2826 spin_lock_init(&data->txlock);
2827
2828 init_usb_anchor(&data->intr_anchor);
2829 init_usb_anchor(&data->bulk_anchor);
2830 init_usb_anchor(&data->isoc_anchor);
2831 init_usb_anchor(&data->diag_anchor);
2832 spin_lock_init(&data->rxlock);
2833
2834 if (id->driver_info & BTUSB_INTEL_NEW) {
2835 data->recv_event = btusb_recv_event_intel;
2836 data->recv_bulk = btusb_recv_bulk_intel;
2837 set_bit(BTUSB_BOOTLOADER, &data->flags);
2838 } else {
2839 data->recv_event = hci_recv_frame;
2840 data->recv_bulk = btusb_recv_bulk;
2841 }
2842
2843 hdev = hci_alloc_dev();
2844 if (!hdev)
2845 return -ENOMEM;
2846
2847 hdev->bus = HCI_USB;
2848 hci_set_drvdata(hdev, data);
2849
2850 if (id->driver_info & BTUSB_AMP)
2851 hdev->dev_type = HCI_AMP;
2852 else
2853 hdev->dev_type = HCI_PRIMARY;
2854
2855 data->hdev = hdev;
2856
2857 SET_HCIDEV_DEV(hdev, &intf->dev);
2858
2859 hdev->open = btusb_open;
2860 hdev->close = btusb_close;
2861 hdev->flush = btusb_flush;
2862 hdev->send = btusb_send_frame;
2863 hdev->notify = btusb_notify;
2864
2865 if (id->driver_info & BTUSB_CW6622)
2866 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2867
2868 if (id->driver_info & BTUSB_BCM2045)
2869 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2870
2871 if (id->driver_info & BTUSB_BCM92035)
2872 hdev->setup = btusb_setup_bcm92035;
2873
2874 #ifdef CONFIG_BT_HCIBTUSB_BCM
2875 if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2876 hdev->manufacturer = 15;
2877 hdev->setup = btbcm_setup_patchram;
2878 hdev->set_diag = btusb_bcm_set_diag;
2879 hdev->set_bdaddr = btbcm_set_bdaddr;
2880
2881 /* Broadcom LM_DIAG Interface numbers are hardcoded */
2882 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
2883 }
2884
2885 if (id->driver_info & BTUSB_BCM_APPLE) {
2886 hdev->manufacturer = 15;
2887 hdev->setup = btbcm_setup_apple;
2888 hdev->set_diag = btusb_bcm_set_diag;
2889
2890 /* Broadcom LM_DIAG Interface numbers are hardcoded */
2891 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
2892 }
2893 #endif
2894
2895 if (id->driver_info & BTUSB_INTEL) {
2896 hdev->manufacturer = 2;
2897 hdev->setup = btusb_setup_intel;
2898 hdev->shutdown = btusb_shutdown_intel;
2899 hdev->set_diag = btintel_set_diag_mfg;
2900 hdev->set_bdaddr = btintel_set_bdaddr;
2901 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2902 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2903 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
2904 }
2905
2906 if (id->driver_info & BTUSB_INTEL_NEW) {
2907 hdev->manufacturer = 2;
2908 hdev->send = btusb_send_frame_intel;
2909 hdev->setup = btusb_setup_intel_new;
2910 hdev->hw_error = btintel_hw_error;
2911 hdev->set_diag = btintel_set_diag;
2912 hdev->set_bdaddr = btintel_set_bdaddr;
2913 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2914 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
2915 }
2916
2917 if (id->driver_info & BTUSB_MARVELL)
2918 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2919
2920 if (id->driver_info & BTUSB_SWAVE) {
2921 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
2922 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
2923 }
2924
2925 if (id->driver_info & BTUSB_INTEL_BOOT) {
2926 hdev->manufacturer = 2;
2927 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2928 }
2929
2930 if (id->driver_info & BTUSB_ATH3012) {
2931 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2932 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2933 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2934 }
2935
2936 if (id->driver_info & BTUSB_QCA_ROME) {
2937 data->setup_on_usb = btusb_setup_qca;
2938 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2939
2940 /* QCA Rome devices lose their updated firmware over suspend,
2941 * but the USB hub doesn't notice any status change.
2942 * explicitly request a device reset on resume.
2943 */
2944 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
2945 }
2946
2947 #ifdef CONFIG_BT_HCIBTUSB_RTL
2948 if (id->driver_info & BTUSB_REALTEK) {
2949 hdev->setup = btrtl_setup_realtek;
2950
2951 /* Realtek devices lose their updated firmware over suspend,
2952 * but the USB hub doesn't notice any status change.
2953 * Explicitly request a device reset on resume.
2954 */
2955 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
2956 }
2957 #endif
2958
2959 if (id->driver_info & BTUSB_AMP) {
2960 /* AMP controllers do not support SCO packets */
2961 data->isoc = NULL;
2962 } else {
2963 /* Interface orders are hardcoded in the specification */
2964 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
2965 }
2966
2967 if (!reset)
2968 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2969
2970 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2971 if (!disable_scofix)
2972 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2973 }
2974
2975 if (id->driver_info & BTUSB_BROKEN_ISOC)
2976 data->isoc = NULL;
2977
2978 if (id->driver_info & BTUSB_DIGIANSWER) {
2979 data->cmdreq_type = USB_TYPE_VENDOR;
2980 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2981 }
2982
2983 if (id->driver_info & BTUSB_CSR) {
2984 struct usb_device *udev = data->udev;
2985 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
2986
2987 /* Old firmware would otherwise execute USB reset */
2988 if (bcdDevice < 0x117)
2989 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2990
2991 /* Fake CSR devices with broken commands */
2992 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
2993 hdev->setup = btusb_setup_csr;
2994
2995 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2996 }
2997
2998 if (id->driver_info & BTUSB_SNIFFER) {
2999 struct usb_device *udev = data->udev;
3000
3001 /* New sniffer firmware has crippled HCI interface */
3002 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3003 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3004 }
3005
3006 if (id->driver_info & BTUSB_INTEL_BOOT) {
3007 /* A bug in the bootloader causes that interrupt interface is
3008 * only enabled after receiving SetInterface(0, AltSetting=0).
3009 */
3010 err = usb_set_interface(data->udev, 0, 0);
3011 if (err < 0) {
3012 BT_ERR("failed to set interface 0, alt 0 %d", err);
3013 hci_free_dev(hdev);
3014 return err;
3015 }
3016 }
3017
3018 if (data->isoc) {
3019 err = usb_driver_claim_interface(&btusb_driver,
3020 data->isoc, data);
3021 if (err < 0) {
3022 hci_free_dev(hdev);
3023 return err;
3024 }
3025 }
3026
3027 #ifdef CONFIG_BT_HCIBTUSB_BCM
3028 if (data->diag) {
3029 if (!usb_driver_claim_interface(&btusb_driver,
3030 data->diag, data))
3031 __set_diag_interface(hdev);
3032 else
3033 data->diag = NULL;
3034 }
3035 #endif
3036
3037 err = hci_register_dev(hdev);
3038 if (err < 0) {
3039 hci_free_dev(hdev);
3040 return err;
3041 }
3042
3043 usb_set_intfdata(intf, data);
3044
3045 return 0;
3046 }
3047
3048 static void btusb_disconnect(struct usb_interface *intf)
3049 {
3050 struct btusb_data *data = usb_get_intfdata(intf);
3051 struct hci_dev *hdev;
3052
3053 BT_DBG("intf %p", intf);
3054
3055 if (!data)
3056 return;
3057
3058 hdev = data->hdev;
3059 usb_set_intfdata(data->intf, NULL);
3060
3061 if (data->isoc)
3062 usb_set_intfdata(data->isoc, NULL);
3063
3064 if (data->diag)
3065 usb_set_intfdata(data->diag, NULL);
3066
3067 hci_unregister_dev(hdev);
3068
3069 if (intf == data->intf) {
3070 if (data->isoc)
3071 usb_driver_release_interface(&btusb_driver, data->isoc);
3072 if (data->diag)
3073 usb_driver_release_interface(&btusb_driver, data->diag);
3074 } else if (intf == data->isoc) {
3075 if (data->diag)
3076 usb_driver_release_interface(&btusb_driver, data->diag);
3077 usb_driver_release_interface(&btusb_driver, data->intf);
3078 } else if (intf == data->diag) {
3079 usb_driver_release_interface(&btusb_driver, data->intf);
3080 if (data->isoc)
3081 usb_driver_release_interface(&btusb_driver, data->isoc);
3082 }
3083
3084 hci_free_dev(hdev);
3085 }
3086
3087 #ifdef CONFIG_PM
3088 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3089 {
3090 struct btusb_data *data = usb_get_intfdata(intf);
3091
3092 BT_DBG("intf %p", intf);
3093
3094 if (data->suspend_count++)
3095 return 0;
3096
3097 spin_lock_irq(&data->txlock);
3098 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3099 set_bit(BTUSB_SUSPENDING, &data->flags);
3100 spin_unlock_irq(&data->txlock);
3101 } else {
3102 spin_unlock_irq(&data->txlock);
3103 data->suspend_count--;
3104 return -EBUSY;
3105 }
3106
3107 cancel_work_sync(&data->work);
3108
3109 btusb_stop_traffic(data);
3110 usb_kill_anchored_urbs(&data->tx_anchor);
3111
3112 return 0;
3113 }
3114
3115 static void play_deferred(struct btusb_data *data)
3116 {
3117 struct urb *urb;
3118 int err;
3119
3120 while ((urb = usb_get_from_anchor(&data->deferred))) {
3121 err = usb_submit_urb(urb, GFP_ATOMIC);
3122 if (err < 0)
3123 break;
3124
3125 data->tx_in_flight++;
3126 }
3127 usb_scuttle_anchored_urbs(&data->deferred);
3128 }
3129
3130 static int btusb_resume(struct usb_interface *intf)
3131 {
3132 struct btusb_data *data = usb_get_intfdata(intf);
3133 struct hci_dev *hdev = data->hdev;
3134 int err = 0;
3135
3136 BT_DBG("intf %p", intf);
3137
3138 if (--data->suspend_count)
3139 return 0;
3140
3141 if (!test_bit(HCI_RUNNING, &hdev->flags))
3142 goto done;
3143
3144 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3145 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3146 if (err < 0) {
3147 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3148 goto failed;
3149 }
3150 }
3151
3152 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3153 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3154 if (err < 0) {
3155 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3156 goto failed;
3157 }
3158
3159 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3160 }
3161
3162 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3163 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3164 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3165 else
3166 btusb_submit_isoc_urb(hdev, GFP_NOIO);
3167 }
3168
3169 spin_lock_irq(&data->txlock);
3170 play_deferred(data);
3171 clear_bit(BTUSB_SUSPENDING, &data->flags);
3172 spin_unlock_irq(&data->txlock);
3173 schedule_work(&data->work);
3174
3175 return 0;
3176
3177 failed:
3178 usb_scuttle_anchored_urbs(&data->deferred);
3179 done:
3180 spin_lock_irq(&data->txlock);
3181 clear_bit(BTUSB_SUSPENDING, &data->flags);
3182 spin_unlock_irq(&data->txlock);
3183
3184 return err;
3185 }
3186 #endif
3187
3188 static struct usb_driver btusb_driver = {
3189 .name = "btusb",
3190 .probe = btusb_probe,
3191 .disconnect = btusb_disconnect,
3192 #ifdef CONFIG_PM
3193 .suspend = btusb_suspend,
3194 .resume = btusb_resume,
3195 #endif
3196 .id_table = btusb_table,
3197 .supports_autosuspend = 1,
3198 .disable_hub_initiated_lpm = 1,
3199 };
3200
3201 module_usb_driver(btusb_driver);
3202
3203 module_param(disable_scofix, bool, 0644);
3204 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3205
3206 module_param(force_scofix, bool, 0644);
3207 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3208
3209 module_param(reset, bool, 0644);
3210 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3211
3212 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3213 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3214 MODULE_VERSION(VERSION);
3215 MODULE_LICENSE("GPL");
Linux with added FPC-III support