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Revert "ALSA: hda: Flush interrupts on disabling"
[linux/fpc-iii.git] / drivers / bluetooth / btusb.c
blob1d1c0d7aec885a1b90bb6c56ae01677c84f72338
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 /* Additional Realtek 8822CE Bluetooth devices */
366 { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK },
367
368 /* Silicon Wave based devices */
369 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
370
371 { } /* Terminating entry */
372 };
373
374 #define BTUSB_MAX_ISOC_FRAMES 10
375
376 #define BTUSB_INTR_RUNNING 0
377 #define BTUSB_BULK_RUNNING 1
378 #define BTUSB_ISOC_RUNNING 2
379 #define BTUSB_SUSPENDING 3
380 #define BTUSB_DID_ISO_RESUME 4
381 #define BTUSB_BOOTLOADER 5
382 #define BTUSB_DOWNLOADING 6
383 #define BTUSB_FIRMWARE_LOADED 7
384 #define BTUSB_FIRMWARE_FAILED 8
385 #define BTUSB_BOOTING 9
386 #define BTUSB_DIAG_RUNNING 10
387 #define BTUSB_OOB_WAKE_ENABLED 11
388
389 struct btusb_data {
390 struct hci_dev *hdev;
391 struct usb_device *udev;
392 struct usb_interface *intf;
393 struct usb_interface *isoc;
394 struct usb_interface *diag;
395
396 unsigned long flags;
397
398 struct work_struct work;
399 struct work_struct waker;
400
401 struct usb_anchor deferred;
402 struct usb_anchor tx_anchor;
403 int tx_in_flight;
404 spinlock_t txlock;
405
406 struct usb_anchor intr_anchor;
407 struct usb_anchor bulk_anchor;
408 struct usb_anchor isoc_anchor;
409 struct usb_anchor diag_anchor;
410 spinlock_t rxlock;
411
412 struct sk_buff *evt_skb;
413 struct sk_buff *acl_skb;
414 struct sk_buff *sco_skb;
415
416 struct usb_endpoint_descriptor *intr_ep;
417 struct usb_endpoint_descriptor *bulk_tx_ep;
418 struct usb_endpoint_descriptor *bulk_rx_ep;
419 struct usb_endpoint_descriptor *isoc_tx_ep;
420 struct usb_endpoint_descriptor *isoc_rx_ep;
421 struct usb_endpoint_descriptor *diag_tx_ep;
422 struct usb_endpoint_descriptor *diag_rx_ep;
423
424 __u8 cmdreq_type;
425 __u8 cmdreq;
426
427 unsigned int sco_num;
428 int isoc_altsetting;
429 int suspend_count;
430
431 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
432 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
433
434 int (*setup_on_usb)(struct hci_dev *hdev);
435 };
436
437 static inline void btusb_free_frags(struct btusb_data *data)
438 {
439 unsigned long flags;
440
441 spin_lock_irqsave(&data->rxlock, flags);
442
443 kfree_skb(data->evt_skb);
444 data->evt_skb = NULL;
445
446 kfree_skb(data->acl_skb);
447 data->acl_skb = NULL;
448
449 kfree_skb(data->sco_skb);
450 data->sco_skb = NULL;
451
452 spin_unlock_irqrestore(&data->rxlock, flags);
453 }
454
455 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
456 {
457 struct sk_buff *skb;
458 int err = 0;
459
460 spin_lock(&data->rxlock);
461 skb = data->evt_skb;
462
463 while (count) {
464 int len;
465
466 if (!skb) {
467 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
468 if (!skb) {
469 err = -ENOMEM;
470 break;
471 }
472
473 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
474 hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
475 }
476
477 len = min_t(uint, hci_skb_expect(skb), count);
478 memcpy(skb_put(skb, len), buffer, len);
479
480 count -= len;
481 buffer += len;
482 hci_skb_expect(skb) -= len;
483
484 if (skb->len == HCI_EVENT_HDR_SIZE) {
485 /* Complete event header */
486 hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
487
488 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
489 kfree_skb(skb);
490 skb = NULL;
491
492 err = -EILSEQ;
493 break;
494 }
495 }
496
497 if (!hci_skb_expect(skb)) {
498 /* Complete frame */
499 data->recv_event(data->hdev, skb);
500 skb = NULL;
501 }
502 }
503
504 data->evt_skb = skb;
505 spin_unlock(&data->rxlock);
506
507 return err;
508 }
509
510 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
511 {
512 struct sk_buff *skb;
513 int err = 0;
514
515 spin_lock(&data->rxlock);
516 skb = data->acl_skb;
517
518 while (count) {
519 int len;
520
521 if (!skb) {
522 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
523 if (!skb) {
524 err = -ENOMEM;
525 break;
526 }
527
528 hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
529 hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
530 }
531
532 len = min_t(uint, hci_skb_expect(skb), count);
533 memcpy(skb_put(skb, len), buffer, len);
534
535 count -= len;
536 buffer += len;
537 hci_skb_expect(skb) -= len;
538
539 if (skb->len == HCI_ACL_HDR_SIZE) {
540 __le16 dlen = hci_acl_hdr(skb)->dlen;
541
542 /* Complete ACL header */
543 hci_skb_expect(skb) = __le16_to_cpu(dlen);
544
545 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
546 kfree_skb(skb);
547 skb = NULL;
548
549 err = -EILSEQ;
550 break;
551 }
552 }
553
554 if (!hci_skb_expect(skb)) {
555 /* Complete frame */
556 hci_recv_frame(data->hdev, skb);
557 skb = NULL;
558 }
559 }
560
561 data->acl_skb = skb;
562 spin_unlock(&data->rxlock);
563
564 return err;
565 }
566
567 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
568 {
569 struct sk_buff *skb;
570 int err = 0;
571
572 spin_lock(&data->rxlock);
573 skb = data->sco_skb;
574
575 while (count) {
576 int len;
577
578 if (!skb) {
579 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
580 if (!skb) {
581 err = -ENOMEM;
582 break;
583 }
584
585 hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
586 hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
587 }
588
589 len = min_t(uint, hci_skb_expect(skb), count);
590 memcpy(skb_put(skb, len), buffer, len);
591
592 count -= len;
593 buffer += len;
594 hci_skb_expect(skb) -= len;
595
596 if (skb->len == HCI_SCO_HDR_SIZE) {
597 /* Complete SCO header */
598 hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
599
600 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
601 kfree_skb(skb);
602 skb = NULL;
603
604 err = -EILSEQ;
605 break;
606 }
607 }
608
609 if (!hci_skb_expect(skb)) {
610 /* Complete frame */
611 hci_recv_frame(data->hdev, skb);
612 skb = NULL;
613 }
614 }
615
616 data->sco_skb = skb;
617 spin_unlock(&data->rxlock);
618
619 return err;
620 }
621
622 static void btusb_intr_complete(struct urb *urb)
623 {
624 struct hci_dev *hdev = urb->context;
625 struct btusb_data *data = hci_get_drvdata(hdev);
626 int err;
627
628 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
629 urb->actual_length);
630
631 if (!test_bit(HCI_RUNNING, &hdev->flags))
632 return;
633
634 if (urb->status == 0) {
635 hdev->stat.byte_rx += urb->actual_length;
636
637 if (btusb_recv_intr(data, urb->transfer_buffer,
638 urb->actual_length) < 0) {
639 BT_ERR("%s corrupted event packet", hdev->name);
640 hdev->stat.err_rx++;
641 }
642 } else if (urb->status == -ENOENT) {
643 /* Avoid suspend failed when usb_kill_urb */
644 return;
645 }
646
647 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
648 return;
649
650 usb_mark_last_busy(data->udev);
651 usb_anchor_urb(urb, &data->intr_anchor);
652
653 err = usb_submit_urb(urb, GFP_ATOMIC);
654 if (err < 0) {
655 /* -EPERM: urb is being killed;
656 * -ENODEV: device got disconnected */
657 if (err != -EPERM && err != -ENODEV)
658 BT_ERR("%s urb %p failed to resubmit (%d)",
659 hdev->name, urb, -err);
660 usb_unanchor_urb(urb);
661 }
662 }
663
664 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
665 {
666 struct btusb_data *data = hci_get_drvdata(hdev);
667 struct urb *urb;
668 unsigned char *buf;
669 unsigned int pipe;
670 int err, size;
671
672 BT_DBG("%s", hdev->name);
673
674 if (!data->intr_ep)
675 return -ENODEV;
676
677 urb = usb_alloc_urb(0, mem_flags);
678 if (!urb)
679 return -ENOMEM;
680
681 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
682
683 buf = kmalloc(size, mem_flags);
684 if (!buf) {
685 usb_free_urb(urb);
686 return -ENOMEM;
687 }
688
689 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
690
691 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
692 btusb_intr_complete, hdev, data->intr_ep->bInterval);
693
694 urb->transfer_flags |= URB_FREE_BUFFER;
695
696 usb_anchor_urb(urb, &data->intr_anchor);
697
698 err = usb_submit_urb(urb, mem_flags);
699 if (err < 0) {
700 if (err != -EPERM && err != -ENODEV)
701 BT_ERR("%s urb %p submission failed (%d)",
702 hdev->name, urb, -err);
703 usb_unanchor_urb(urb);
704 }
705
706 usb_free_urb(urb);
707
708 return err;
709 }
710
711 static void btusb_bulk_complete(struct urb *urb)
712 {
713 struct hci_dev *hdev = urb->context;
714 struct btusb_data *data = hci_get_drvdata(hdev);
715 int err;
716
717 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
718 urb->actual_length);
719
720 if (!test_bit(HCI_RUNNING, &hdev->flags))
721 return;
722
723 if (urb->status == 0) {
724 hdev->stat.byte_rx += urb->actual_length;
725
726 if (data->recv_bulk(data, urb->transfer_buffer,
727 urb->actual_length) < 0) {
728 BT_ERR("%s corrupted ACL packet", hdev->name);
729 hdev->stat.err_rx++;
730 }
731 } else if (urb->status == -ENOENT) {
732 /* Avoid suspend failed when usb_kill_urb */
733 return;
734 }
735
736 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
737 return;
738
739 usb_anchor_urb(urb, &data->bulk_anchor);
740 usb_mark_last_busy(data->udev);
741
742 err = usb_submit_urb(urb, GFP_ATOMIC);
743 if (err < 0) {
744 /* -EPERM: urb is being killed;
745 * -ENODEV: device got disconnected */
746 if (err != -EPERM && err != -ENODEV)
747 BT_ERR("%s urb %p failed to resubmit (%d)",
748 hdev->name, urb, -err);
749 usb_unanchor_urb(urb);
750 }
751 }
752
753 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
754 {
755 struct btusb_data *data = hci_get_drvdata(hdev);
756 struct urb *urb;
757 unsigned char *buf;
758 unsigned int pipe;
759 int err, size = HCI_MAX_FRAME_SIZE;
760
761 BT_DBG("%s", hdev->name);
762
763 if (!data->bulk_rx_ep)
764 return -ENODEV;
765
766 urb = usb_alloc_urb(0, mem_flags);
767 if (!urb)
768 return -ENOMEM;
769
770 buf = kmalloc(size, mem_flags);
771 if (!buf) {
772 usb_free_urb(urb);
773 return -ENOMEM;
774 }
775
776 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
777
778 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
779 btusb_bulk_complete, hdev);
780
781 urb->transfer_flags |= URB_FREE_BUFFER;
782
783 usb_mark_last_busy(data->udev);
784 usb_anchor_urb(urb, &data->bulk_anchor);
785
786 err = usb_submit_urb(urb, mem_flags);
787 if (err < 0) {
788 if (err != -EPERM && err != -ENODEV)
789 BT_ERR("%s urb %p submission failed (%d)",
790 hdev->name, urb, -err);
791 usb_unanchor_urb(urb);
792 }
793
794 usb_free_urb(urb);
795
796 return err;
797 }
798
799 static void btusb_isoc_complete(struct urb *urb)
800 {
801 struct hci_dev *hdev = urb->context;
802 struct btusb_data *data = hci_get_drvdata(hdev);
803 int i, err;
804
805 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
806 urb->actual_length);
807
808 if (!test_bit(HCI_RUNNING, &hdev->flags))
809 return;
810
811 if (urb->status == 0) {
812 for (i = 0; i < urb->number_of_packets; i++) {
813 unsigned int offset = urb->iso_frame_desc[i].offset;
814 unsigned int length = urb->iso_frame_desc[i].actual_length;
815
816 if (urb->iso_frame_desc[i].status)
817 continue;
818
819 hdev->stat.byte_rx += length;
820
821 if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
822 length) < 0) {
823 BT_ERR("%s corrupted SCO packet", hdev->name);
824 hdev->stat.err_rx++;
825 }
826 }
827 } else if (urb->status == -ENOENT) {
828 /* Avoid suspend failed when usb_kill_urb */
829 return;
830 }
831
832 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
833 return;
834
835 usb_anchor_urb(urb, &data->isoc_anchor);
836
837 err = usb_submit_urb(urb, GFP_ATOMIC);
838 if (err < 0) {
839 /* -EPERM: urb is being killed;
840 * -ENODEV: device got disconnected */
841 if (err != -EPERM && err != -ENODEV)
842 BT_ERR("%s urb %p failed to resubmit (%d)",
843 hdev->name, urb, -err);
844 usb_unanchor_urb(urb);
845 }
846 }
847
848 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
849 {
850 int i, offset = 0;
851
852 BT_DBG("len %d mtu %d", len, mtu);
853
854 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
855 i++, offset += mtu, len -= mtu) {
856 urb->iso_frame_desc[i].offset = offset;
857 urb->iso_frame_desc[i].length = mtu;
858 }
859
860 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
861 urb->iso_frame_desc[i].offset = offset;
862 urb->iso_frame_desc[i].length = len;
863 i++;
864 }
865
866 urb->number_of_packets = i;
867 }
868
869 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
870 {
871 struct btusb_data *data = hci_get_drvdata(hdev);
872 struct urb *urb;
873 unsigned char *buf;
874 unsigned int pipe;
875 int err, size;
876
877 BT_DBG("%s", hdev->name);
878
879 if (!data->isoc_rx_ep)
880 return -ENODEV;
881
882 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
883 if (!urb)
884 return -ENOMEM;
885
886 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
887 BTUSB_MAX_ISOC_FRAMES;
888
889 buf = kmalloc(size, mem_flags);
890 if (!buf) {
891 usb_free_urb(urb);
892 return -ENOMEM;
893 }
894
895 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
896
897 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
898 hdev, data->isoc_rx_ep->bInterval);
899
900 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
901
902 __fill_isoc_descriptor(urb, size,
903 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
904
905 usb_anchor_urb(urb, &data->isoc_anchor);
906
907 err = usb_submit_urb(urb, mem_flags);
908 if (err < 0) {
909 if (err != -EPERM && err != -ENODEV)
910 BT_ERR("%s urb %p submission failed (%d)",
911 hdev->name, urb, -err);
912 usb_unanchor_urb(urb);
913 }
914
915 usb_free_urb(urb);
916
917 return err;
918 }
919
920 static void btusb_diag_complete(struct urb *urb)
921 {
922 struct hci_dev *hdev = urb->context;
923 struct btusb_data *data = hci_get_drvdata(hdev);
924 int err;
925
926 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
927 urb->actual_length);
928
929 if (urb->status == 0) {
930 struct sk_buff *skb;
931
932 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
933 if (skb) {
934 memcpy(skb_put(skb, urb->actual_length),
935 urb->transfer_buffer, urb->actual_length);
936 hci_recv_diag(hdev, skb);
937 }
938 } else if (urb->status == -ENOENT) {
939 /* Avoid suspend failed when usb_kill_urb */
940 return;
941 }
942
943 if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
944 return;
945
946 usb_anchor_urb(urb, &data->diag_anchor);
947 usb_mark_last_busy(data->udev);
948
949 err = usb_submit_urb(urb, GFP_ATOMIC);
950 if (err < 0) {
951 /* -EPERM: urb is being killed;
952 * -ENODEV: device got disconnected */
953 if (err != -EPERM && err != -ENODEV)
954 BT_ERR("%s urb %p failed to resubmit (%d)",
955 hdev->name, urb, -err);
956 usb_unanchor_urb(urb);
957 }
958 }
959
960 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
961 {
962 struct btusb_data *data = hci_get_drvdata(hdev);
963 struct urb *urb;
964 unsigned char *buf;
965 unsigned int pipe;
966 int err, size = HCI_MAX_FRAME_SIZE;
967
968 BT_DBG("%s", hdev->name);
969
970 if (!data->diag_rx_ep)
971 return -ENODEV;
972
973 urb = usb_alloc_urb(0, mem_flags);
974 if (!urb)
975 return -ENOMEM;
976
977 buf = kmalloc(size, mem_flags);
978 if (!buf) {
979 usb_free_urb(urb);
980 return -ENOMEM;
981 }
982
983 pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
984
985 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
986 btusb_diag_complete, hdev);
987
988 urb->transfer_flags |= URB_FREE_BUFFER;
989
990 usb_mark_last_busy(data->udev);
991 usb_anchor_urb(urb, &data->diag_anchor);
992
993 err = usb_submit_urb(urb, mem_flags);
994 if (err < 0) {
995 if (err != -EPERM && err != -ENODEV)
996 BT_ERR("%s urb %p submission failed (%d)",
997 hdev->name, urb, -err);
998 usb_unanchor_urb(urb);
999 }
1000
1001 usb_free_urb(urb);
1002
1003 return err;
1004 }
1005
1006 static void btusb_tx_complete(struct urb *urb)
1007 {
1008 struct sk_buff *skb = urb->context;
1009 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1010 struct btusb_data *data = hci_get_drvdata(hdev);
1011
1012 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1013 urb->actual_length);
1014
1015 if (!test_bit(HCI_RUNNING, &hdev->flags))
1016 goto done;
1017
1018 if (!urb->status)
1019 hdev->stat.byte_tx += urb->transfer_buffer_length;
1020 else
1021 hdev->stat.err_tx++;
1022
1023 done:
1024 spin_lock(&data->txlock);
1025 data->tx_in_flight--;
1026 spin_unlock(&data->txlock);
1027
1028 kfree(urb->setup_packet);
1029
1030 kfree_skb(skb);
1031 }
1032
1033 static void btusb_isoc_tx_complete(struct urb *urb)
1034 {
1035 struct sk_buff *skb = urb->context;
1036 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1037
1038 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1039 urb->actual_length);
1040
1041 if (!test_bit(HCI_RUNNING, &hdev->flags))
1042 goto done;
1043
1044 if (!urb->status)
1045 hdev->stat.byte_tx += urb->transfer_buffer_length;
1046 else
1047 hdev->stat.err_tx++;
1048
1049 done:
1050 kfree(urb->setup_packet);
1051
1052 kfree_skb(skb);
1053 }
1054
1055 static int btusb_open(struct hci_dev *hdev)
1056 {
1057 struct btusb_data *data = hci_get_drvdata(hdev);
1058 int err;
1059
1060 BT_DBG("%s", hdev->name);
1061
1062 err = usb_autopm_get_interface(data->intf);
1063 if (err < 0)
1064 return err;
1065
1066 /* Patching USB firmware files prior to starting any URBs of HCI path
1067 * It is more safe to use USB bulk channel for downloading USB patch
1068 */
1069 if (data->setup_on_usb) {
1070 err = data->setup_on_usb(hdev);
1071 if (err < 0)
1072 return err;
1073 }
1074
1075 data->intf->needs_remote_wakeup = 1;
1076
1077 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1078 goto done;
1079
1080 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1081 if (err < 0)
1082 goto failed;
1083
1084 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1085 if (err < 0) {
1086 usb_kill_anchored_urbs(&data->intr_anchor);
1087 goto failed;
1088 }
1089
1090 set_bit(BTUSB_BULK_RUNNING, &data->flags);
1091 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1092
1093 if (data->diag) {
1094 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1095 set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1096 }
1097
1098 done:
1099 usb_autopm_put_interface(data->intf);
1100 return 0;
1101
1102 failed:
1103 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1104 usb_autopm_put_interface(data->intf);
1105 return err;
1106 }
1107
1108 static void btusb_stop_traffic(struct btusb_data *data)
1109 {
1110 usb_kill_anchored_urbs(&data->intr_anchor);
1111 usb_kill_anchored_urbs(&data->bulk_anchor);
1112 usb_kill_anchored_urbs(&data->isoc_anchor);
1113 usb_kill_anchored_urbs(&data->diag_anchor);
1114 }
1115
1116 static int btusb_close(struct hci_dev *hdev)
1117 {
1118 struct btusb_data *data = hci_get_drvdata(hdev);
1119 int err;
1120
1121 BT_DBG("%s", hdev->name);
1122
1123 cancel_work_sync(&data->work);
1124 cancel_work_sync(&data->waker);
1125
1126 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1127 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1128 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1129 clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1130
1131 btusb_stop_traffic(data);
1132 btusb_free_frags(data);
1133
1134 err = usb_autopm_get_interface(data->intf);
1135 if (err < 0)
1136 goto failed;
1137
1138 data->intf->needs_remote_wakeup = 0;
1139 usb_autopm_put_interface(data->intf);
1140
1141 failed:
1142 usb_scuttle_anchored_urbs(&data->deferred);
1143 return 0;
1144 }
1145
1146 static int btusb_flush(struct hci_dev *hdev)
1147 {
1148 struct btusb_data *data = hci_get_drvdata(hdev);
1149
1150 BT_DBG("%s", hdev->name);
1151
1152 usb_kill_anchored_urbs(&data->tx_anchor);
1153 btusb_free_frags(data);
1154
1155 return 0;
1156 }
1157
1158 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1159 {
1160 struct btusb_data *data = hci_get_drvdata(hdev);
1161 struct usb_ctrlrequest *dr;
1162 struct urb *urb;
1163 unsigned int pipe;
1164
1165 urb = usb_alloc_urb(0, GFP_KERNEL);
1166 if (!urb)
1167 return ERR_PTR(-ENOMEM);
1168
1169 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1170 if (!dr) {
1171 usb_free_urb(urb);
1172 return ERR_PTR(-ENOMEM);
1173 }
1174
1175 dr->bRequestType = data->cmdreq_type;
1176 dr->bRequest = data->cmdreq;
1177 dr->wIndex = 0;
1178 dr->wValue = 0;
1179 dr->wLength = __cpu_to_le16(skb->len);
1180
1181 pipe = usb_sndctrlpipe(data->udev, 0x00);
1182
1183 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1184 skb->data, skb->len, btusb_tx_complete, skb);
1185
1186 skb->dev = (void *)hdev;
1187
1188 return urb;
1189 }
1190
1191 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1192 {
1193 struct btusb_data *data = hci_get_drvdata(hdev);
1194 struct urb *urb;
1195 unsigned int pipe;
1196
1197 if (!data->bulk_tx_ep)
1198 return ERR_PTR(-ENODEV);
1199
1200 urb = usb_alloc_urb(0, GFP_KERNEL);
1201 if (!urb)
1202 return ERR_PTR(-ENOMEM);
1203
1204 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1205
1206 usb_fill_bulk_urb(urb, data->udev, pipe,
1207 skb->data, skb->len, btusb_tx_complete, skb);
1208
1209 skb->dev = (void *)hdev;
1210
1211 return urb;
1212 }
1213
1214 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1215 {
1216 struct btusb_data *data = hci_get_drvdata(hdev);
1217 struct urb *urb;
1218 unsigned int pipe;
1219
1220 if (!data->isoc_tx_ep)
1221 return ERR_PTR(-ENODEV);
1222
1223 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1224 if (!urb)
1225 return ERR_PTR(-ENOMEM);
1226
1227 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1228
1229 usb_fill_int_urb(urb, data->udev, pipe,
1230 skb->data, skb->len, btusb_isoc_tx_complete,
1231 skb, data->isoc_tx_ep->bInterval);
1232
1233 urb->transfer_flags = URB_ISO_ASAP;
1234
1235 __fill_isoc_descriptor(urb, skb->len,
1236 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1237
1238 skb->dev = (void *)hdev;
1239
1240 return urb;
1241 }
1242
1243 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1244 {
1245 struct btusb_data *data = hci_get_drvdata(hdev);
1246 int err;
1247
1248 usb_anchor_urb(urb, &data->tx_anchor);
1249
1250 err = usb_submit_urb(urb, GFP_KERNEL);
1251 if (err < 0) {
1252 if (err != -EPERM && err != -ENODEV)
1253 BT_ERR("%s urb %p submission failed (%d)",
1254 hdev->name, urb, -err);
1255 kfree(urb->setup_packet);
1256 usb_unanchor_urb(urb);
1257 } else {
1258 usb_mark_last_busy(data->udev);
1259 }
1260
1261 usb_free_urb(urb);
1262 return err;
1263 }
1264
1265 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1266 {
1267 struct btusb_data *data = hci_get_drvdata(hdev);
1268 unsigned long flags;
1269 bool suspending;
1270
1271 spin_lock_irqsave(&data->txlock, flags);
1272 suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1273 if (!suspending)
1274 data->tx_in_flight++;
1275 spin_unlock_irqrestore(&data->txlock, flags);
1276
1277 if (!suspending)
1278 return submit_tx_urb(hdev, urb);
1279
1280 usb_anchor_urb(urb, &data->deferred);
1281 schedule_work(&data->waker);
1282
1283 usb_free_urb(urb);
1284 return 0;
1285 }
1286
1287 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1288 {
1289 struct urb *urb;
1290
1291 BT_DBG("%s", hdev->name);
1292
1293 switch (hci_skb_pkt_type(skb)) {
1294 case HCI_COMMAND_PKT:
1295 urb = alloc_ctrl_urb(hdev, skb);
1296 if (IS_ERR(urb))
1297 return PTR_ERR(urb);
1298
1299 hdev->stat.cmd_tx++;
1300 return submit_or_queue_tx_urb(hdev, urb);
1301
1302 case HCI_ACLDATA_PKT:
1303 urb = alloc_bulk_urb(hdev, skb);
1304 if (IS_ERR(urb))
1305 return PTR_ERR(urb);
1306
1307 hdev->stat.acl_tx++;
1308 return submit_or_queue_tx_urb(hdev, urb);
1309
1310 case HCI_SCODATA_PKT:
1311 if (hci_conn_num(hdev, SCO_LINK) < 1)
1312 return -ENODEV;
1313
1314 urb = alloc_isoc_urb(hdev, skb);
1315 if (IS_ERR(urb))
1316 return PTR_ERR(urb);
1317
1318 hdev->stat.sco_tx++;
1319 return submit_tx_urb(hdev, urb);
1320 }
1321
1322 return -EILSEQ;
1323 }
1324
1325 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1326 {
1327 struct btusb_data *data = hci_get_drvdata(hdev);
1328
1329 BT_DBG("%s evt %d", hdev->name, evt);
1330
1331 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1332 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1333 schedule_work(&data->work);
1334 }
1335 }
1336
1337 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1338 {
1339 struct btusb_data *data = hci_get_drvdata(hdev);
1340 struct usb_interface *intf = data->isoc;
1341 struct usb_endpoint_descriptor *ep_desc;
1342 int i, err;
1343
1344 if (!data->isoc)
1345 return -ENODEV;
1346
1347 err = usb_set_interface(data->udev, 1, altsetting);
1348 if (err < 0) {
1349 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1350 return err;
1351 }
1352
1353 data->isoc_altsetting = altsetting;
1354
1355 data->isoc_tx_ep = NULL;
1356 data->isoc_rx_ep = NULL;
1357
1358 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1359 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1360
1361 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1362 data->isoc_tx_ep = ep_desc;
1363 continue;
1364 }
1365
1366 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1367 data->isoc_rx_ep = ep_desc;
1368 continue;
1369 }
1370 }
1371
1372 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1373 BT_ERR("%s invalid SCO descriptors", hdev->name);
1374 return -ENODEV;
1375 }
1376
1377 return 0;
1378 }
1379
1380 static void btusb_work(struct work_struct *work)
1381 {
1382 struct btusb_data *data = container_of(work, struct btusb_data, work);
1383 struct hci_dev *hdev = data->hdev;
1384 int new_alts;
1385 int err;
1386
1387 if (data->sco_num > 0) {
1388 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1389 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1390 if (err < 0) {
1391 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1392 usb_kill_anchored_urbs(&data->isoc_anchor);
1393 return;
1394 }
1395
1396 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1397 }
1398
1399 if (hdev->voice_setting & 0x0020) {
1400 static const int alts[3] = { 2, 4, 5 };
1401
1402 new_alts = alts[data->sco_num - 1];
1403 } else {
1404 new_alts = data->sco_num;
1405 }
1406
1407 if (data->isoc_altsetting != new_alts) {
1408 unsigned long flags;
1409
1410 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1411 usb_kill_anchored_urbs(&data->isoc_anchor);
1412
1413 /* When isochronous alternate setting needs to be
1414 * changed, because SCO connection has been added
1415 * or removed, a packet fragment may be left in the
1416 * reassembling state. This could lead to wrongly
1417 * assembled fragments.
1418 *
1419 * Clear outstanding fragment when selecting a new
1420 * alternate setting.
1421 */
1422 spin_lock_irqsave(&data->rxlock, flags);
1423 kfree_skb(data->sco_skb);
1424 data->sco_skb = NULL;
1425 spin_unlock_irqrestore(&data->rxlock, flags);
1426
1427 if (__set_isoc_interface(hdev, new_alts) < 0)
1428 return;
1429 }
1430
1431 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1432 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1433 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1434 else
1435 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1436 }
1437 } else {
1438 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1439 usb_kill_anchored_urbs(&data->isoc_anchor);
1440
1441 __set_isoc_interface(hdev, 0);
1442 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1443 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1444 }
1445 }
1446
1447 static void btusb_waker(struct work_struct *work)
1448 {
1449 struct btusb_data *data = container_of(work, struct btusb_data, waker);
1450 int err;
1451
1452 err = usb_autopm_get_interface(data->intf);
1453 if (err < 0)
1454 return;
1455
1456 usb_autopm_put_interface(data->intf);
1457 }
1458
1459 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1460 {
1461 struct sk_buff *skb;
1462 u8 val = 0x00;
1463
1464 BT_DBG("%s", hdev->name);
1465
1466 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1467 if (IS_ERR(skb))
1468 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1469 else
1470 kfree_skb(skb);
1471
1472 return 0;
1473 }
1474
1475 static int btusb_setup_csr(struct hci_dev *hdev)
1476 {
1477 struct hci_rp_read_local_version *rp;
1478 struct sk_buff *skb;
1479
1480 BT_DBG("%s", hdev->name);
1481
1482 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1483 HCI_INIT_TIMEOUT);
1484 if (IS_ERR(skb)) {
1485 int err = PTR_ERR(skb);
1486 BT_ERR("%s: CSR: Local version failed (%d)", hdev->name, err);
1487 return err;
1488 }
1489
1490 if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1491 BT_ERR("%s: CSR: Local version length mismatch", hdev->name);
1492 kfree_skb(skb);
1493 return -EIO;
1494 }
1495
1496 rp = (struct hci_rp_read_local_version *)skb->data;
1497
1498 /* Detect controllers which aren't real CSR ones. */
1499 if (le16_to_cpu(rp->manufacturer) != 10 ||
1500 le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1501 /* Clear the reset quirk since this is not an actual
1502 * early Bluetooth 1.1 device from CSR.
1503 */
1504 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1505
1506 /* These fake CSR controllers have all a broken
1507 * stored link key handling and so just disable it.
1508 */
1509 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1510 }
1511
1512 kfree_skb(skb);
1513
1514 return 0;
1515 }
1516
1517 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1518 struct intel_version *ver)
1519 {
1520 const struct firmware *fw;
1521 char fwname[64];
1522 int ret;
1523
1524 snprintf(fwname, sizeof(fwname),
1525 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1526 ver->hw_platform, ver->hw_variant, ver->hw_revision,
1527 ver->fw_variant, ver->fw_revision, ver->fw_build_num,
1528 ver->fw_build_ww, ver->fw_build_yy);
1529
1530 ret = request_firmware(&fw, fwname, &hdev->dev);
1531 if (ret < 0) {
1532 if (ret == -EINVAL) {
1533 BT_ERR("%s Intel firmware file request failed (%d)",
1534 hdev->name, ret);
1535 return NULL;
1536 }
1537
1538 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1539 hdev->name, fwname, ret);
1540
1541 /* If the correct firmware patch file is not found, use the
1542 * default firmware patch file instead
1543 */
1544 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1545 ver->hw_platform, ver->hw_variant);
1546 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1547 BT_ERR("%s failed to open default Intel fw file: %s",
1548 hdev->name, fwname);
1549 return NULL;
1550 }
1551 }
1552
1553 BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1554
1555 return fw;
1556 }
1557
1558 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1559 const struct firmware *fw,
1560 const u8 **fw_ptr, int *disable_patch)
1561 {
1562 struct sk_buff *skb;
1563 struct hci_command_hdr *cmd;
1564 const u8 *cmd_param;
1565 struct hci_event_hdr *evt = NULL;
1566 const u8 *evt_param = NULL;
1567 int remain = fw->size - (*fw_ptr - fw->data);
1568
1569 /* The first byte indicates the types of the patch command or event.
1570 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1571 * in the current firmware buffer doesn't start with 0x01 or
1572 * the size of remain buffer is smaller than HCI command header,
1573 * the firmware file is corrupted and it should stop the patching
1574 * process.
1575 */
1576 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1577 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1578 return -EINVAL;
1579 }
1580 (*fw_ptr)++;
1581 remain--;
1582
1583 cmd = (struct hci_command_hdr *)(*fw_ptr);
1584 *fw_ptr += sizeof(*cmd);
1585 remain -= sizeof(*cmd);
1586
1587 /* Ensure that the remain firmware data is long enough than the length
1588 * of command parameter. If not, the firmware file is corrupted.
1589 */
1590 if (remain < cmd->plen) {
1591 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1592 return -EFAULT;
1593 }
1594
1595 /* If there is a command that loads a patch in the firmware
1596 * file, then enable the patch upon success, otherwise just
1597 * disable the manufacturer mode, for example patch activation
1598 * is not required when the default firmware patch file is used
1599 * because there are no patch data to load.
1600 */
1601 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1602 *disable_patch = 0;
1603
1604 cmd_param = *fw_ptr;
1605 *fw_ptr += cmd->plen;
1606 remain -= cmd->plen;
1607
1608 /* This reads the expected events when the above command is sent to the
1609 * device. Some vendor commands expects more than one events, for
1610 * example command status event followed by vendor specific event.
1611 * For this case, it only keeps the last expected event. so the command
1612 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1613 * last expected event.
1614 */
1615 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1616 (*fw_ptr)++;
1617 remain--;
1618
1619 evt = (struct hci_event_hdr *)(*fw_ptr);
1620 *fw_ptr += sizeof(*evt);
1621 remain -= sizeof(*evt);
1622
1623 if (remain < evt->plen) {
1624 BT_ERR("%s Intel fw corrupted: invalid evt len",
1625 hdev->name);
1626 return -EFAULT;
1627 }
1628
1629 evt_param = *fw_ptr;
1630 *fw_ptr += evt->plen;
1631 remain -= evt->plen;
1632 }
1633
1634 /* Every HCI commands in the firmware file has its correspond event.
1635 * If event is not found or remain is smaller than zero, the firmware
1636 * file is corrupted.
1637 */
1638 if (!evt || !evt_param || remain < 0) {
1639 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1640 return -EFAULT;
1641 }
1642
1643 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1644 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1645 if (IS_ERR(skb)) {
1646 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1647 hdev->name, cmd->opcode, PTR_ERR(skb));
1648 return PTR_ERR(skb);
1649 }
1650
1651 /* It ensures that the returned event matches the event data read from
1652 * the firmware file. At fist, it checks the length and then
1653 * the contents of the event.
1654 */
1655 if (skb->len != evt->plen) {
1656 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1657 le16_to_cpu(cmd->opcode));
1658 kfree_skb(skb);
1659 return -EFAULT;
1660 }
1661
1662 if (memcmp(skb->data, evt_param, evt->plen)) {
1663 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1664 hdev->name, le16_to_cpu(cmd->opcode));
1665 kfree_skb(skb);
1666 return -EFAULT;
1667 }
1668 kfree_skb(skb);
1669
1670 return 0;
1671 }
1672
1673 static int btusb_setup_intel(struct hci_dev *hdev)
1674 {
1675 struct sk_buff *skb;
1676 const struct firmware *fw;
1677 const u8 *fw_ptr;
1678 int disable_patch, err;
1679 struct intel_version ver;
1680
1681 BT_DBG("%s", hdev->name);
1682
1683 /* The controller has a bug with the first HCI command sent to it
1684 * returning number of completed commands as zero. This would stall the
1685 * command processing in the Bluetooth core.
1686 *
1687 * As a workaround, send HCI Reset command first which will reset the
1688 * number of completed commands and allow normal command processing
1689 * from now on.
1690 */
1691 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1692 if (IS_ERR(skb)) {
1693 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1694 hdev->name, PTR_ERR(skb));
1695 return PTR_ERR(skb);
1696 }
1697 kfree_skb(skb);
1698
1699 /* Read Intel specific controller version first to allow selection of
1700 * which firmware file to load.
1701 *
1702 * The returned information are hardware variant and revision plus
1703 * firmware variant, revision and build number.
1704 */
1705 err = btintel_read_version(hdev, &ver);
1706 if (err)
1707 return err;
1708
1709 BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1710 hdev->name, ver.hw_platform, ver.hw_variant, ver.hw_revision,
1711 ver.fw_variant, ver.fw_revision, ver.fw_build_num,
1712 ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
1713
1714 /* fw_patch_num indicates the version of patch the device currently
1715 * have. If there is no patch data in the device, it is always 0x00.
1716 * So, if it is other than 0x00, no need to patch the device again.
1717 */
1718 if (ver.fw_patch_num) {
1719 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1720 hdev->name, ver.fw_patch_num);
1721 goto complete;
1722 }
1723
1724 /* Opens the firmware patch file based on the firmware version read
1725 * from the controller. If it fails to open the matching firmware
1726 * patch file, it tries to open the default firmware patch file.
1727 * If no patch file is found, allow the device to operate without
1728 * a patch.
1729 */
1730 fw = btusb_setup_intel_get_fw(hdev, &ver);
1731 if (!fw)
1732 goto complete;
1733 fw_ptr = fw->data;
1734
1735 /* Enable the manufacturer mode of the controller.
1736 * Only while this mode is enabled, the driver can download the
1737 * firmware patch data and configuration parameters.
1738 */
1739 err = btintel_enter_mfg(hdev);
1740 if (err) {
1741 release_firmware(fw);
1742 return err;
1743 }
1744
1745 disable_patch = 1;
1746
1747 /* The firmware data file consists of list of Intel specific HCI
1748 * commands and its expected events. The first byte indicates the
1749 * type of the message, either HCI command or HCI event.
1750 *
1751 * It reads the command and its expected event from the firmware file,
1752 * and send to the controller. Once __hci_cmd_sync_ev() returns,
1753 * the returned event is compared with the event read from the firmware
1754 * file and it will continue until all the messages are downloaded to
1755 * the controller.
1756 *
1757 * Once the firmware patching is completed successfully,
1758 * the manufacturer mode is disabled with reset and activating the
1759 * downloaded patch.
1760 *
1761 * If the firmware patching fails, the manufacturer mode is
1762 * disabled with reset and deactivating the patch.
1763 *
1764 * If the default patch file is used, no reset is done when disabling
1765 * the manufacturer.
1766 */
1767 while (fw->size > fw_ptr - fw->data) {
1768 int ret;
1769
1770 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1771 &disable_patch);
1772 if (ret < 0)
1773 goto exit_mfg_deactivate;
1774 }
1775
1776 release_firmware(fw);
1777
1778 if (disable_patch)
1779 goto exit_mfg_disable;
1780
1781 /* Patching completed successfully and disable the manufacturer mode
1782 * with reset and activate the downloaded firmware patches.
1783 */
1784 err = btintel_exit_mfg(hdev, true, true);
1785 if (err)
1786 return err;
1787
1788 BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1789 hdev->name);
1790
1791 goto complete;
1792
1793 exit_mfg_disable:
1794 /* Disable the manufacturer mode without reset */
1795 err = btintel_exit_mfg(hdev, false, false);
1796 if (err)
1797 return err;
1798
1799 BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1800
1801 goto complete;
1802
1803 exit_mfg_deactivate:
1804 release_firmware(fw);
1805
1806 /* Patching failed. Disable the manufacturer mode with reset and
1807 * deactivate the downloaded firmware patches.
1808 */
1809 err = btintel_exit_mfg(hdev, true, false);
1810 if (err)
1811 return err;
1812
1813 BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1814 hdev->name);
1815
1816 complete:
1817 /* Set the event mask for Intel specific vendor events. This enables
1818 * a few extra events that are useful during general operation.
1819 */
1820 btintel_set_event_mask_mfg(hdev, false);
1821
1822 btintel_check_bdaddr(hdev);
1823 return 0;
1824 }
1825
1826 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1827 {
1828 struct sk_buff *skb;
1829 struct hci_event_hdr *hdr;
1830 struct hci_ev_cmd_complete *evt;
1831
1832 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1833 if (!skb)
1834 return -ENOMEM;
1835
1836 hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
1837 hdr->evt = HCI_EV_CMD_COMPLETE;
1838 hdr->plen = sizeof(*evt) + 1;
1839
1840 evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
1841 evt->ncmd = 0x01;
1842 evt->opcode = cpu_to_le16(opcode);
1843
1844 *skb_put(skb, 1) = 0x00;
1845
1846 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
1847
1848 return hci_recv_frame(hdev, skb);
1849 }
1850
1851 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1852 int count)
1853 {
1854 /* When the device is in bootloader mode, then it can send
1855 * events via the bulk endpoint. These events are treated the
1856 * same way as the ones received from the interrupt endpoint.
1857 */
1858 if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1859 return btusb_recv_intr(data, buffer, count);
1860
1861 return btusb_recv_bulk(data, buffer, count);
1862 }
1863
1864 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1865 unsigned int len)
1866 {
1867 const struct intel_bootup *evt = ptr;
1868
1869 if (len != sizeof(*evt))
1870 return;
1871
1872 if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1873 smp_mb__after_atomic();
1874 wake_up_bit(&data->flags, BTUSB_BOOTING);
1875 }
1876 }
1877
1878 static void btusb_intel_secure_send_result(struct btusb_data *data,
1879 const void *ptr, unsigned int len)
1880 {
1881 const struct intel_secure_send_result *evt = ptr;
1882
1883 if (len != sizeof(*evt))
1884 return;
1885
1886 if (evt->result)
1887 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1888
1889 if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1890 test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1891 smp_mb__after_atomic();
1892 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1893 }
1894 }
1895
1896 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1897 {
1898 struct btusb_data *data = hci_get_drvdata(hdev);
1899
1900 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1901 struct hci_event_hdr *hdr = (void *)skb->data;
1902
1903 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1904 hdr->plen > 0) {
1905 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1906 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1907
1908 switch (skb->data[2]) {
1909 case 0x02:
1910 /* When switching to the operational firmware
1911 * the device sends a vendor specific event
1912 * indicating that the bootup completed.
1913 */
1914 btusb_intel_bootup(data, ptr, len);
1915 break;
1916 case 0x06:
1917 /* When the firmware loading completes the
1918 * device sends out a vendor specific event
1919 * indicating the result of the firmware
1920 * loading.
1921 */
1922 btusb_intel_secure_send_result(data, ptr, len);
1923 break;
1924 }
1925 }
1926 }
1927
1928 return hci_recv_frame(hdev, skb);
1929 }
1930
1931 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1932 {
1933 struct btusb_data *data = hci_get_drvdata(hdev);
1934 struct urb *urb;
1935
1936 BT_DBG("%s", hdev->name);
1937
1938 switch (hci_skb_pkt_type(skb)) {
1939 case HCI_COMMAND_PKT:
1940 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1941 struct hci_command_hdr *cmd = (void *)skb->data;
1942 __u16 opcode = le16_to_cpu(cmd->opcode);
1943
1944 /* When in bootloader mode and the command 0xfc09
1945 * is received, it needs to be send down the
1946 * bulk endpoint. So allocate a bulk URB instead.
1947 */
1948 if (opcode == 0xfc09)
1949 urb = alloc_bulk_urb(hdev, skb);
1950 else
1951 urb = alloc_ctrl_urb(hdev, skb);
1952
1953 /* When the 0xfc01 command is issued to boot into
1954 * the operational firmware, it will actually not
1955 * send a command complete event. To keep the flow
1956 * control working inject that event here.
1957 */
1958 if (opcode == 0xfc01)
1959 inject_cmd_complete(hdev, opcode);
1960 } else {
1961 urb = alloc_ctrl_urb(hdev, skb);
1962 }
1963 if (IS_ERR(urb))
1964 return PTR_ERR(urb);
1965
1966 hdev->stat.cmd_tx++;
1967 return submit_or_queue_tx_urb(hdev, urb);
1968
1969 case HCI_ACLDATA_PKT:
1970 urb = alloc_bulk_urb(hdev, skb);
1971 if (IS_ERR(urb))
1972 return PTR_ERR(urb);
1973
1974 hdev->stat.acl_tx++;
1975 return submit_or_queue_tx_urb(hdev, urb);
1976
1977 case HCI_SCODATA_PKT:
1978 if (hci_conn_num(hdev, SCO_LINK) < 1)
1979 return -ENODEV;
1980
1981 urb = alloc_isoc_urb(hdev, skb);
1982 if (IS_ERR(urb))
1983 return PTR_ERR(urb);
1984
1985 hdev->stat.sco_tx++;
1986 return submit_tx_urb(hdev, urb);
1987 }
1988
1989 return -EILSEQ;
1990 }
1991
1992 static int btusb_setup_intel_new(struct hci_dev *hdev)
1993 {
1994 static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
1995 0x00, 0x08, 0x04, 0x00 };
1996 struct btusb_data *data = hci_get_drvdata(hdev);
1997 struct sk_buff *skb;
1998 struct intel_version ver;
1999 struct intel_boot_params *params;
2000 const struct firmware *fw;
2001 const u8 *fw_ptr;
2002 u32 frag_len;
2003 char fwname[64];
2004 ktime_t calltime, delta, rettime;
2005 unsigned long long duration;
2006 int err;
2007
2008 BT_DBG("%s", hdev->name);
2009
2010 calltime = ktime_get();
2011
2012 /* Read the Intel version information to determine if the device
2013 * is in bootloader mode or if it already has operational firmware
2014 * loaded.
2015 */
2016 err = btintel_read_version(hdev, &ver);
2017 if (err)
2018 return err;
2019
2020 /* The hardware platform number has a fixed value of 0x37 and
2021 * for now only accept this single value.
2022 */
2023 if (ver.hw_platform != 0x37) {
2024 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
2025 hdev->name, ver.hw_platform);
2026 return -EINVAL;
2027 }
2028
2029 /* At the moment the iBT 3.0 hardware variants 0x0b (LnP/SfP)
2030 * and 0x0c (WsP) are supported by this firmware loading method.
2031 *
2032 * This check has been put in place to ensure correct forward
2033 * compatibility options when newer hardware variants come along.
2034 */
2035 if (ver.hw_variant != 0x0b && ver.hw_variant != 0x0c) {
2036 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
2037 hdev->name, ver.hw_variant);
2038 return -EINVAL;
2039 }
2040
2041 btintel_version_info(hdev, &ver);
2042
2043 /* The firmware variant determines if the device is in bootloader
2044 * mode or is running operational firmware. The value 0x06 identifies
2045 * the bootloader and the value 0x23 identifies the operational
2046 * firmware.
2047 *
2048 * When the operational firmware is already present, then only
2049 * the check for valid Bluetooth device address is needed. This
2050 * determines if the device will be added as configured or
2051 * unconfigured controller.
2052 *
2053 * It is not possible to use the Secure Boot Parameters in this
2054 * case since that command is only available in bootloader mode.
2055 */
2056 if (ver.fw_variant == 0x23) {
2057 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2058 btintel_check_bdaddr(hdev);
2059 return 0;
2060 }
2061
2062 /* If the device is not in bootloader mode, then the only possible
2063 * choice is to return an error and abort the device initialization.
2064 */
2065 if (ver.fw_variant != 0x06) {
2066 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2067 hdev->name, ver.fw_variant);
2068 return -ENODEV;
2069 }
2070
2071 /* Read the secure boot parameters to identify the operating
2072 * details of the bootloader.
2073 */
2074 skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2075 if (IS_ERR(skb)) {
2076 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2077 hdev->name, PTR_ERR(skb));
2078 return PTR_ERR(skb);
2079 }
2080
2081 if (skb->len != sizeof(*params)) {
2082 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2083 kfree_skb(skb);
2084 return -EILSEQ;
2085 }
2086
2087 params = (struct intel_boot_params *)skb->data;
2088
2089 BT_INFO("%s: Device revision is %u", hdev->name,
2090 le16_to_cpu(params->dev_revid));
2091
2092 BT_INFO("%s: Secure boot is %s", hdev->name,
2093 params->secure_boot ? "enabled" : "disabled");
2094
2095 BT_INFO("%s: OTP lock is %s", hdev->name,
2096 params->otp_lock ? "enabled" : "disabled");
2097
2098 BT_INFO("%s: API lock is %s", hdev->name,
2099 params->api_lock ? "enabled" : "disabled");
2100
2101 BT_INFO("%s: Debug lock is %s", hdev->name,
2102 params->debug_lock ? "enabled" : "disabled");
2103
2104 BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2105 params->min_fw_build_nn, params->min_fw_build_cw,
2106 2000 + params->min_fw_build_yy);
2107
2108 /* It is required that every single firmware fragment is acknowledged
2109 * with a command complete event. If the boot parameters indicate
2110 * that this bootloader does not send them, then abort the setup.
2111 */
2112 if (params->limited_cce != 0x00) {
2113 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2114 hdev->name, params->limited_cce);
2115 kfree_skb(skb);
2116 return -EINVAL;
2117 }
2118
2119 /* If the OTP has no valid Bluetooth device address, then there will
2120 * also be no valid address for the operational firmware.
2121 */
2122 if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2123 BT_INFO("%s: No device address configured", hdev->name);
2124 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2125 }
2126
2127 /* With this Intel bootloader only the hardware variant and device
2128 * revision information are used to select the right firmware.
2129 *
2130 * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2131 *
2132 * Currently the supported hardware variants are:
2133 * 11 (0x0b) for iBT3.0 (LnP/SfP)
2134 * 12 (0x0c) for iBT3.5 (WsP)
2135 */
2136 snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.sfi",
2137 le16_to_cpu(ver.hw_variant),
2138 le16_to_cpu(params->dev_revid));
2139
2140 err = request_firmware(&fw, fwname, &hdev->dev);
2141 if (err < 0) {
2142 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2143 hdev->name, err);
2144 kfree_skb(skb);
2145 return err;
2146 }
2147
2148 BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2149
2150 /* Save the DDC file name for later use to apply once the firmware
2151 * downloading is done.
2152 */
2153 snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.ddc",
2154 le16_to_cpu(ver.hw_variant),
2155 le16_to_cpu(params->dev_revid));
2156
2157 kfree_skb(skb);
2158
2159 if (fw->size < 644) {
2160 BT_ERR("%s: Invalid size of firmware file (%zu)",
2161 hdev->name, fw->size);
2162 err = -EBADF;
2163 goto done;
2164 }
2165
2166 set_bit(BTUSB_DOWNLOADING, &data->flags);
2167
2168 /* Start the firmware download transaction with the Init fragment
2169 * represented by the 128 bytes of CSS header.
2170 */
2171 err = btintel_secure_send(hdev, 0x00, 128, fw->data);
2172 if (err < 0) {
2173 BT_ERR("%s: Failed to send firmware header (%d)",
2174 hdev->name, err);
2175 goto done;
2176 }
2177
2178 /* Send the 256 bytes of public key information from the firmware
2179 * as the PKey fragment.
2180 */
2181 err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128);
2182 if (err < 0) {
2183 BT_ERR("%s: Failed to send firmware public key (%d)",
2184 hdev->name, err);
2185 goto done;
2186 }
2187
2188 /* Send the 256 bytes of signature information from the firmware
2189 * as the Sign fragment.
2190 */
2191 err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388);
2192 if (err < 0) {
2193 BT_ERR("%s: Failed to send firmware signature (%d)",
2194 hdev->name, err);
2195 goto done;
2196 }
2197
2198 fw_ptr = fw->data + 644;
2199 frag_len = 0;
2200
2201 while (fw_ptr - fw->data < fw->size) {
2202 struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
2203
2204 frag_len += sizeof(*cmd) + cmd->plen;
2205
2206 /* The parameter length of the secure send command requires
2207 * a 4 byte alignment. It happens so that the firmware file
2208 * contains proper Intel_NOP commands to align the fragments
2209 * as needed.
2210 *
2211 * Send set of commands with 4 byte alignment from the
2212 * firmware data buffer as a single Data fragement.
2213 */
2214 if (!(frag_len % 4)) {
2215 err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr);
2216 if (err < 0) {
2217 BT_ERR("%s: Failed to send firmware data (%d)",
2218 hdev->name, err);
2219 goto done;
2220 }
2221
2222 fw_ptr += frag_len;
2223 frag_len = 0;
2224 }
2225 }
2226
2227 set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2228
2229 BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2230
2231 /* Before switching the device into operational mode and with that
2232 * booting the loaded firmware, wait for the bootloader notification
2233 * that all fragments have been successfully received.
2234 *
2235 * When the event processing receives the notification, then the
2236 * BTUSB_DOWNLOADING flag will be cleared.
2237 *
2238 * The firmware loading should not take longer than 5 seconds
2239 * and thus just timeout if that happens and fail the setup
2240 * of this device.
2241 */
2242 err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2243 TASK_INTERRUPTIBLE,
2244 msecs_to_jiffies(5000));
2245 if (err == -EINTR) {
2246 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2247 goto done;
2248 }
2249
2250 if (err) {
2251 BT_ERR("%s: Firmware loading timeout", hdev->name);
2252 err = -ETIMEDOUT;
2253 goto done;
2254 }
2255
2256 if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2257 BT_ERR("%s: Firmware loading failed", hdev->name);
2258 err = -ENOEXEC;
2259 goto done;
2260 }
2261
2262 rettime = ktime_get();
2263 delta = ktime_sub(rettime, calltime);
2264 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2265
2266 BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2267
2268 done:
2269 release_firmware(fw);
2270
2271 if (err < 0)
2272 return err;
2273
2274 calltime = ktime_get();
2275
2276 set_bit(BTUSB_BOOTING, &data->flags);
2277
2278 skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2279 HCI_INIT_TIMEOUT);
2280 if (IS_ERR(skb))
2281 return PTR_ERR(skb);
2282
2283 kfree_skb(skb);
2284
2285 /* The bootloader will not indicate when the device is ready. This
2286 * is done by the operational firmware sending bootup notification.
2287 *
2288 * Booting into operational firmware should not take longer than
2289 * 1 second. However if that happens, then just fail the setup
2290 * since something went wrong.
2291 */
2292 BT_INFO("%s: Waiting for device to boot", hdev->name);
2293
2294 err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2295 TASK_INTERRUPTIBLE,
2296 msecs_to_jiffies(1000));
2297
2298 if (err == -EINTR) {
2299 BT_ERR("%s: Device boot interrupted", hdev->name);
2300 return -EINTR;
2301 }
2302
2303 if (err) {
2304 BT_ERR("%s: Device boot timeout", hdev->name);
2305 return -ETIMEDOUT;
2306 }
2307
2308 rettime = ktime_get();
2309 delta = ktime_sub(rettime, calltime);
2310 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2311
2312 BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2313
2314 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2315
2316 /* Once the device is running in operational mode, it needs to apply
2317 * the device configuration (DDC) parameters.
2318 *
2319 * The device can work without DDC parameters, so even if it fails
2320 * to load the file, no need to fail the setup.
2321 */
2322 btintel_load_ddc_config(hdev, fwname);
2323
2324 /* Set the event mask for Intel specific vendor events. This enables
2325 * a few extra events that are useful during general operation. It
2326 * does not enable any debugging related events.
2327 *
2328 * The device will function correctly without these events enabled
2329 * and thus no need to fail the setup.
2330 */
2331 btintel_set_event_mask(hdev, false);
2332
2333 return 0;
2334 }
2335
2336 static int btusb_shutdown_intel(struct hci_dev *hdev)
2337 {
2338 struct sk_buff *skb;
2339 long ret;
2340
2341 /* Some platforms have an issue with BT LED when the interface is
2342 * down or BT radio is turned off, which takes 5 seconds to BT LED
2343 * goes off. This command turns off the BT LED immediately.
2344 */
2345 skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2346 if (IS_ERR(skb)) {
2347 ret = PTR_ERR(skb);
2348 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2349 hdev->name, ret);
2350 return ret;
2351 }
2352 kfree_skb(skb);
2353
2354 return 0;
2355 }
2356
2357 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2358 const bdaddr_t *bdaddr)
2359 {
2360 struct sk_buff *skb;
2361 u8 buf[8];
2362 long ret;
2363
2364 buf[0] = 0xfe;
2365 buf[1] = sizeof(bdaddr_t);
2366 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2367
2368 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2369 if (IS_ERR(skb)) {
2370 ret = PTR_ERR(skb);
2371 BT_ERR("%s: changing Marvell device address failed (%ld)",
2372 hdev->name, ret);
2373 return ret;
2374 }
2375 kfree_skb(skb);
2376
2377 return 0;
2378 }
2379
2380 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2381 const bdaddr_t *bdaddr)
2382 {
2383 struct sk_buff *skb;
2384 u8 buf[10];
2385 long ret;
2386
2387 buf[0] = 0x01;
2388 buf[1] = 0x01;
2389 buf[2] = 0x00;
2390 buf[3] = sizeof(bdaddr_t);
2391 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2392
2393 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2394 if (IS_ERR(skb)) {
2395 ret = PTR_ERR(skb);
2396 BT_ERR("%s: Change address command failed (%ld)",
2397 hdev->name, ret);
2398 return ret;
2399 }
2400 kfree_skb(skb);
2401
2402 return 0;
2403 }
2404
2405 #define QCA_DFU_PACKET_LEN 4096
2406
2407 #define QCA_GET_TARGET_VERSION 0x09
2408 #define QCA_CHECK_STATUS 0x05
2409 #define QCA_DFU_DOWNLOAD 0x01
2410
2411 #define QCA_SYSCFG_UPDATED 0x40
2412 #define QCA_PATCH_UPDATED 0x80
2413 #define QCA_DFU_TIMEOUT 3000
2414
2415 struct qca_version {
2416 __le32 rom_version;
2417 __le32 patch_version;
2418 __le32 ram_version;
2419 __le32 ref_clock;
2420 __u8 reserved[4];
2421 } __packed;
2422
2423 struct qca_rampatch_version {
2424 __le16 rom_version;
2425 __le16 patch_version;
2426 } __packed;
2427
2428 struct qca_device_info {
2429 u32 rom_version;
2430 u8 rampatch_hdr; /* length of header in rampatch */
2431 u8 nvm_hdr; /* length of header in NVM */
2432 u8 ver_offset; /* offset of version structure in rampatch */
2433 };
2434
2435 static const struct qca_device_info qca_devices_table[] = {
2436 { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2437 { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2438 { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2439 { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2440 { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2441 { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2442 };
2443
2444 static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request,
2445 void *data, u16 size)
2446 {
2447 struct btusb_data *btdata = hci_get_drvdata(hdev);
2448 struct usb_device *udev = btdata->udev;
2449 int pipe, err;
2450 u8 *buf;
2451
2452 buf = kmalloc(size, GFP_KERNEL);
2453 if (!buf)
2454 return -ENOMEM;
2455
2456 /* Found some of USB hosts have IOT issues with ours so that we should
2457 * not wait until HCI layer is ready.
2458 */
2459 pipe = usb_rcvctrlpipe(udev, 0);
2460 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2461 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2462 if (err < 0) {
2463 BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err);
2464 goto done;
2465 }
2466
2467 memcpy(data, buf, size);
2468
2469 done:
2470 kfree(buf);
2471
2472 return err;
2473 }
2474
2475 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2476 const struct firmware *firmware,
2477 size_t hdr_size)
2478 {
2479 struct btusb_data *btdata = hci_get_drvdata(hdev);
2480 struct usb_device *udev = btdata->udev;
2481 size_t count, size, sent = 0;
2482 int pipe, len, err;
2483 u8 *buf;
2484
2485 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2486 if (!buf)
2487 return -ENOMEM;
2488
2489 count = firmware->size;
2490
2491 size = min_t(size_t, count, hdr_size);
2492 memcpy(buf, firmware->data, size);
2493
2494 /* USB patches should go down to controller through USB path
2495 * because binary format fits to go down through USB channel.
2496 * USB control path is for patching headers and USB bulk is for
2497 * patch body.
2498 */
2499 pipe = usb_sndctrlpipe(udev, 0);
2500 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2501 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2502 if (err < 0) {
2503 BT_ERR("%s: Failed to send headers (%d)", hdev->name, err);
2504 goto done;
2505 }
2506
2507 sent += size;
2508 count -= size;
2509
2510 while (count) {
2511 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2512
2513 memcpy(buf, firmware->data + sent, size);
2514
2515 pipe = usb_sndbulkpipe(udev, 0x02);
2516 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2517 QCA_DFU_TIMEOUT);
2518 if (err < 0) {
2519 BT_ERR("%s: Failed to send body at %zd of %zd (%d)",
2520 hdev->name, sent, firmware->size, err);
2521 break;
2522 }
2523
2524 if (size != len) {
2525 BT_ERR("%s: Failed to get bulk buffer", hdev->name);
2526 err = -EILSEQ;
2527 break;
2528 }
2529
2530 sent += size;
2531 count -= size;
2532 }
2533
2534 done:
2535 kfree(buf);
2536 return err;
2537 }
2538
2539 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2540 struct qca_version *ver,
2541 const struct qca_device_info *info)
2542 {
2543 struct qca_rampatch_version *rver;
2544 const struct firmware *fw;
2545 u32 ver_rom, ver_patch;
2546 u16 rver_rom, rver_patch;
2547 char fwname[64];
2548 int err;
2549
2550 ver_rom = le32_to_cpu(ver->rom_version);
2551 ver_patch = le32_to_cpu(ver->patch_version);
2552
2553 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2554
2555 err = request_firmware(&fw, fwname, &hdev->dev);
2556 if (err) {
2557 BT_ERR("%s: failed to request rampatch file: %s (%d)",
2558 hdev->name, fwname, err);
2559 return err;
2560 }
2561
2562 BT_INFO("%s: using rampatch file: %s", hdev->name, fwname);
2563
2564 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2565 rver_rom = le16_to_cpu(rver->rom_version);
2566 rver_patch = le16_to_cpu(rver->patch_version);
2567
2568 BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x "
2569 "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom,
2570 ver_patch);
2571
2572 if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2573 BT_ERR("%s: rampatch file version did not match with firmware",
2574 hdev->name);
2575 err = -EINVAL;
2576 goto done;
2577 }
2578
2579 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2580
2581 done:
2582 release_firmware(fw);
2583
2584 return err;
2585 }
2586
2587 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2588 struct qca_version *ver,
2589 const struct qca_device_info *info)
2590 {
2591 const struct firmware *fw;
2592 char fwname[64];
2593 int err;
2594
2595 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2596 le32_to_cpu(ver->rom_version));
2597
2598 err = request_firmware(&fw, fwname, &hdev->dev);
2599 if (err) {
2600 BT_ERR("%s: failed to request NVM file: %s (%d)",
2601 hdev->name, fwname, err);
2602 return err;
2603 }
2604
2605 BT_INFO("%s: using NVM file: %s", hdev->name, fwname);
2606
2607 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2608
2609 release_firmware(fw);
2610
2611 return err;
2612 }
2613
2614 static int btusb_setup_qca(struct hci_dev *hdev)
2615 {
2616 const struct qca_device_info *info = NULL;
2617 struct qca_version ver;
2618 u32 ver_rom;
2619 u8 status;
2620 int i, err;
2621
2622 err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver,
2623 sizeof(ver));
2624 if (err < 0)
2625 return err;
2626
2627 ver_rom = le32_to_cpu(ver.rom_version);
2628 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2629 if (ver_rom == qca_devices_table[i].rom_version)
2630 info = &qca_devices_table[i];
2631 }
2632 if (!info) {
2633 BT_ERR("%s: don't support firmware rome 0x%x", hdev->name,
2634 ver_rom);
2635 return -ENODEV;
2636 }
2637
2638 err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status,
2639 sizeof(status));
2640 if (err < 0)
2641 return err;
2642
2643 if (!(status & QCA_PATCH_UPDATED)) {
2644 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2645 if (err < 0)
2646 return err;
2647 }
2648
2649 if (!(status & QCA_SYSCFG_UPDATED)) {
2650 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2651 if (err < 0)
2652 return err;
2653 }
2654
2655 return 0;
2656 }
2657
2658 #ifdef CONFIG_BT_HCIBTUSB_BCM
2659 static inline int __set_diag_interface(struct hci_dev *hdev)
2660 {
2661 struct btusb_data *data = hci_get_drvdata(hdev);
2662 struct usb_interface *intf = data->diag;
2663 int i;
2664
2665 if (!data->diag)
2666 return -ENODEV;
2667
2668 data->diag_tx_ep = NULL;
2669 data->diag_rx_ep = NULL;
2670
2671 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2672 struct usb_endpoint_descriptor *ep_desc;
2673
2674 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2675
2676 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2677 data->diag_tx_ep = ep_desc;
2678 continue;
2679 }
2680
2681 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2682 data->diag_rx_ep = ep_desc;
2683 continue;
2684 }
2685 }
2686
2687 if (!data->diag_tx_ep || !data->diag_rx_ep) {
2688 BT_ERR("%s invalid diagnostic descriptors", hdev->name);
2689 return -ENODEV;
2690 }
2691
2692 return 0;
2693 }
2694
2695 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
2696 {
2697 struct btusb_data *data = hci_get_drvdata(hdev);
2698 struct sk_buff *skb;
2699 struct urb *urb;
2700 unsigned int pipe;
2701
2702 if (!data->diag_tx_ep)
2703 return ERR_PTR(-ENODEV);
2704
2705 urb = usb_alloc_urb(0, GFP_KERNEL);
2706 if (!urb)
2707 return ERR_PTR(-ENOMEM);
2708
2709 skb = bt_skb_alloc(2, GFP_KERNEL);
2710 if (!skb) {
2711 usb_free_urb(urb);
2712 return ERR_PTR(-ENOMEM);
2713 }
2714
2715 *skb_put(skb, 1) = 0xf0;
2716 *skb_put(skb, 1) = enable;
2717
2718 pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
2719
2720 usb_fill_bulk_urb(urb, data->udev, pipe,
2721 skb->data, skb->len, btusb_tx_complete, skb);
2722
2723 skb->dev = (void *)hdev;
2724
2725 return urb;
2726 }
2727
2728 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
2729 {
2730 struct btusb_data *data = hci_get_drvdata(hdev);
2731 struct urb *urb;
2732
2733 if (!data->diag)
2734 return -ENODEV;
2735
2736 if (!test_bit(HCI_RUNNING, &hdev->flags))
2737 return -ENETDOWN;
2738
2739 urb = alloc_diag_urb(hdev, enable);
2740 if (IS_ERR(urb))
2741 return PTR_ERR(urb);
2742
2743 return submit_or_queue_tx_urb(hdev, urb);
2744 }
2745 #endif
2746
2747 static int btusb_probe(struct usb_interface *intf,
2748 const struct usb_device_id *id)
2749 {
2750 struct usb_endpoint_descriptor *ep_desc;
2751 struct btusb_data *data;
2752 struct hci_dev *hdev;
2753 unsigned ifnum_base;
2754 int i, err;
2755
2756 BT_DBG("intf %p id %p", intf, id);
2757
2758 /* interface numbers are hardcoded in the spec */
2759 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
2760 if (!(id->driver_info & BTUSB_IFNUM_2))
2761 return -ENODEV;
2762 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
2763 return -ENODEV;
2764 }
2765
2766 ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
2767
2768 if (!id->driver_info) {
2769 const struct usb_device_id *match;
2770
2771 match = usb_match_id(intf, blacklist_table);
2772 if (match)
2773 id = match;
2774 }
2775
2776 if (id->driver_info == BTUSB_IGNORE)
2777 return -ENODEV;
2778
2779 if (id->driver_info & BTUSB_ATH3012) {
2780 struct usb_device *udev = interface_to_usbdev(intf);
2781
2782 /* Old firmware would otherwise let ath3k driver load
2783 * patch and sysconfig files */
2784 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2785 return -ENODEV;
2786 }
2787
2788 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2789 if (!data)
2790 return -ENOMEM;
2791
2792 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2793 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2794
2795 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2796 data->intr_ep = ep_desc;
2797 continue;
2798 }
2799
2800 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2801 data->bulk_tx_ep = ep_desc;
2802 continue;
2803 }
2804
2805 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2806 data->bulk_rx_ep = ep_desc;
2807 continue;
2808 }
2809 }
2810
2811 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2812 return -ENODEV;
2813
2814 if (id->driver_info & BTUSB_AMP) {
2815 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2816 data->cmdreq = 0x2b;
2817 } else {
2818 data->cmdreq_type = USB_TYPE_CLASS;
2819 data->cmdreq = 0x00;
2820 }
2821
2822 data->udev = interface_to_usbdev(intf);
2823 data->intf = intf;
2824
2825 INIT_WORK(&data->work, btusb_work);
2826 INIT_WORK(&data->waker, btusb_waker);
2827 init_usb_anchor(&data->deferred);
2828 init_usb_anchor(&data->tx_anchor);
2829 spin_lock_init(&data->txlock);
2830
2831 init_usb_anchor(&data->intr_anchor);
2832 init_usb_anchor(&data->bulk_anchor);
2833 init_usb_anchor(&data->isoc_anchor);
2834 init_usb_anchor(&data->diag_anchor);
2835 spin_lock_init(&data->rxlock);
2836
2837 if (id->driver_info & BTUSB_INTEL_NEW) {
2838 data->recv_event = btusb_recv_event_intel;
2839 data->recv_bulk = btusb_recv_bulk_intel;
2840 set_bit(BTUSB_BOOTLOADER, &data->flags);
2841 } else {
2842 data->recv_event = hci_recv_frame;
2843 data->recv_bulk = btusb_recv_bulk;
2844 }
2845
2846 hdev = hci_alloc_dev();
2847 if (!hdev)
2848 return -ENOMEM;
2849
2850 hdev->bus = HCI_USB;
2851 hci_set_drvdata(hdev, data);
2852
2853 if (id->driver_info & BTUSB_AMP)
2854 hdev->dev_type = HCI_AMP;
2855 else
2856 hdev->dev_type = HCI_PRIMARY;
2857
2858 data->hdev = hdev;
2859
2860 SET_HCIDEV_DEV(hdev, &intf->dev);
2861
2862 hdev->open = btusb_open;
2863 hdev->close = btusb_close;
2864 hdev->flush = btusb_flush;
2865 hdev->send = btusb_send_frame;
2866 hdev->notify = btusb_notify;
2867
2868 if (id->driver_info & BTUSB_CW6622)
2869 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2870
2871 if (id->driver_info & BTUSB_BCM2045)
2872 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2873
2874 if (id->driver_info & BTUSB_BCM92035)
2875 hdev->setup = btusb_setup_bcm92035;
2876
2877 #ifdef CONFIG_BT_HCIBTUSB_BCM
2878 if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2879 hdev->manufacturer = 15;
2880 hdev->setup = btbcm_setup_patchram;
2881 hdev->set_diag = btusb_bcm_set_diag;
2882 hdev->set_bdaddr = btbcm_set_bdaddr;
2883
2884 /* Broadcom LM_DIAG Interface numbers are hardcoded */
2885 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
2886 }
2887
2888 if (id->driver_info & BTUSB_BCM_APPLE) {
2889 hdev->manufacturer = 15;
2890 hdev->setup = btbcm_setup_apple;
2891 hdev->set_diag = btusb_bcm_set_diag;
2892
2893 /* Broadcom LM_DIAG Interface numbers are hardcoded */
2894 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
2895 }
2896 #endif
2897
2898 if (id->driver_info & BTUSB_INTEL) {
2899 hdev->manufacturer = 2;
2900 hdev->setup = btusb_setup_intel;
2901 hdev->shutdown = btusb_shutdown_intel;
2902 hdev->set_diag = btintel_set_diag_mfg;
2903 hdev->set_bdaddr = btintel_set_bdaddr;
2904 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2905 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2906 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
2907 }
2908
2909 if (id->driver_info & BTUSB_INTEL_NEW) {
2910 hdev->manufacturer = 2;
2911 hdev->send = btusb_send_frame_intel;
2912 hdev->setup = btusb_setup_intel_new;
2913 hdev->hw_error = btintel_hw_error;
2914 hdev->set_diag = btintel_set_diag;
2915 hdev->set_bdaddr = btintel_set_bdaddr;
2916 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2917 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
2918 }
2919
2920 if (id->driver_info & BTUSB_MARVELL)
2921 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2922
2923 if (id->driver_info & BTUSB_SWAVE) {
2924 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
2925 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
2926 }
2927
2928 if (id->driver_info & BTUSB_INTEL_BOOT) {
2929 hdev->manufacturer = 2;
2930 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2931 }
2932
2933 if (id->driver_info & BTUSB_ATH3012) {
2934 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2935 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2936 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2937 }
2938
2939 if (id->driver_info & BTUSB_QCA_ROME) {
2940 data->setup_on_usb = btusb_setup_qca;
2941 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2942
2943 /* QCA Rome devices lose their updated firmware over suspend,
2944 * but the USB hub doesn't notice any status change.
2945 * explicitly request a device reset on resume.
2946 */
2947 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
2948 }
2949
2950 #ifdef CONFIG_BT_HCIBTUSB_RTL
2951 if (id->driver_info & BTUSB_REALTEK) {
2952 hdev->setup = btrtl_setup_realtek;
2953
2954 /* Realtek devices lose their updated firmware over suspend,
2955 * but the USB hub doesn't notice any status change.
2956 * Explicitly request a device reset on resume.
2957 */
2958 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
2959 }
2960 #endif
2961
2962 if (id->driver_info & BTUSB_AMP) {
2963 /* AMP controllers do not support SCO packets */
2964 data->isoc = NULL;
2965 } else {
2966 /* Interface orders are hardcoded in the specification */
2967 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
2968 }
2969
2970 if (!reset)
2971 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2972
2973 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2974 if (!disable_scofix)
2975 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2976 }
2977
2978 if (id->driver_info & BTUSB_BROKEN_ISOC)
2979 data->isoc = NULL;
2980
2981 if (id->driver_info & BTUSB_DIGIANSWER) {
2982 data->cmdreq_type = USB_TYPE_VENDOR;
2983 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2984 }
2985
2986 if (id->driver_info & BTUSB_CSR) {
2987 struct usb_device *udev = data->udev;
2988 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
2989
2990 /* Old firmware would otherwise execute USB reset */
2991 if (bcdDevice < 0x117)
2992 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2993
2994 /* Fake CSR devices with broken commands */
2995 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
2996 hdev->setup = btusb_setup_csr;
2997
2998 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2999 }
3000
3001 if (id->driver_info & BTUSB_SNIFFER) {
3002 struct usb_device *udev = data->udev;
3003
3004 /* New sniffer firmware has crippled HCI interface */
3005 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3006 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3007 }
3008
3009 if (id->driver_info & BTUSB_INTEL_BOOT) {
3010 /* A bug in the bootloader causes that interrupt interface is
3011 * only enabled after receiving SetInterface(0, AltSetting=0).
3012 */
3013 err = usb_set_interface(data->udev, 0, 0);
3014 if (err < 0) {
3015 BT_ERR("failed to set interface 0, alt 0 %d", err);
3016 hci_free_dev(hdev);
3017 return err;
3018 }
3019 }
3020
3021 if (data->isoc) {
3022 err = usb_driver_claim_interface(&btusb_driver,
3023 data->isoc, data);
3024 if (err < 0) {
3025 hci_free_dev(hdev);
3026 return err;
3027 }
3028 }
3029
3030 #ifdef CONFIG_BT_HCIBTUSB_BCM
3031 if (data->diag) {
3032 if (!usb_driver_claim_interface(&btusb_driver,
3033 data->diag, data))
3034 __set_diag_interface(hdev);
3035 else
3036 data->diag = NULL;
3037 }
3038 #endif
3039
3040 err = hci_register_dev(hdev);
3041 if (err < 0) {
3042 hci_free_dev(hdev);
3043 return err;
3044 }
3045
3046 usb_set_intfdata(intf, data);
3047
3048 return 0;
3049 }
3050
3051 static void btusb_disconnect(struct usb_interface *intf)
3052 {
3053 struct btusb_data *data = usb_get_intfdata(intf);
3054 struct hci_dev *hdev;
3055
3056 BT_DBG("intf %p", intf);
3057
3058 if (!data)
3059 return;
3060
3061 hdev = data->hdev;
3062 usb_set_intfdata(data->intf, NULL);
3063
3064 if (data->isoc)
3065 usb_set_intfdata(data->isoc, NULL);
3066
3067 if (data->diag)
3068 usb_set_intfdata(data->diag, NULL);
3069
3070 hci_unregister_dev(hdev);
3071
3072 if (intf == data->intf) {
3073 if (data->isoc)
3074 usb_driver_release_interface(&btusb_driver, data->isoc);
3075 if (data->diag)
3076 usb_driver_release_interface(&btusb_driver, data->diag);
3077 } else if (intf == data->isoc) {
3078 if (data->diag)
3079 usb_driver_release_interface(&btusb_driver, data->diag);
3080 usb_driver_release_interface(&btusb_driver, data->intf);
3081 } else if (intf == data->diag) {
3082 usb_driver_release_interface(&btusb_driver, data->intf);
3083 if (data->isoc)
3084 usb_driver_release_interface(&btusb_driver, data->isoc);
3085 }
3086
3087 hci_free_dev(hdev);
3088 }
3089
3090 #ifdef CONFIG_PM
3091 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3092 {
3093 struct btusb_data *data = usb_get_intfdata(intf);
3094
3095 BT_DBG("intf %p", intf);
3096
3097 if (data->suspend_count++)
3098 return 0;
3099
3100 spin_lock_irq(&data->txlock);
3101 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3102 set_bit(BTUSB_SUSPENDING, &data->flags);
3103 spin_unlock_irq(&data->txlock);
3104 } else {
3105 spin_unlock_irq(&data->txlock);
3106 data->suspend_count--;
3107 return -EBUSY;
3108 }
3109
3110 cancel_work_sync(&data->work);
3111
3112 btusb_stop_traffic(data);
3113 usb_kill_anchored_urbs(&data->tx_anchor);
3114
3115 return 0;
3116 }
3117
3118 static void play_deferred(struct btusb_data *data)
3119 {
3120 struct urb *urb;
3121 int err;
3122
3123 while ((urb = usb_get_from_anchor(&data->deferred))) {
3124 err = usb_submit_urb(urb, GFP_ATOMIC);
3125 if (err < 0)
3126 break;
3127
3128 data->tx_in_flight++;
3129 }
3130 usb_scuttle_anchored_urbs(&data->deferred);
3131 }
3132
3133 static int btusb_resume(struct usb_interface *intf)
3134 {
3135 struct btusb_data *data = usb_get_intfdata(intf);
3136 struct hci_dev *hdev = data->hdev;
3137 int err = 0;
3138
3139 BT_DBG("intf %p", intf);
3140
3141 if (--data->suspend_count)
3142 return 0;
3143
3144 if (!test_bit(HCI_RUNNING, &hdev->flags))
3145 goto done;
3146
3147 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3148 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3149 if (err < 0) {
3150 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3151 goto failed;
3152 }
3153 }
3154
3155 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3156 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3157 if (err < 0) {
3158 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3159 goto failed;
3160 }
3161
3162 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3163 }
3164
3165 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3166 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3167 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3168 else
3169 btusb_submit_isoc_urb(hdev, GFP_NOIO);
3170 }
3171
3172 spin_lock_irq(&data->txlock);
3173 play_deferred(data);
3174 clear_bit(BTUSB_SUSPENDING, &data->flags);
3175 spin_unlock_irq(&data->txlock);
3176 schedule_work(&data->work);
3177
3178 return 0;
3179
3180 failed:
3181 usb_scuttle_anchored_urbs(&data->deferred);
3182 done:
3183 spin_lock_irq(&data->txlock);
3184 clear_bit(BTUSB_SUSPENDING, &data->flags);
3185 spin_unlock_irq(&data->txlock);
3186
3187 return err;
3188 }
3189 #endif
3190
3191 static struct usb_driver btusb_driver = {
3192 .name = "btusb",
3193 .probe = btusb_probe,
3194 .disconnect = btusb_disconnect,
3195 #ifdef CONFIG_PM
3196 .suspend = btusb_suspend,
3197 .resume = btusb_resume,
3198 #endif
3199 .id_table = btusb_table,
3200 .supports_autosuspend = 1,
3201 .disable_hub_initiated_lpm = 1,
3202 };
3203
3204 module_usb_driver(btusb_driver);
3205
3206 module_param(disable_scofix, bool, 0644);
3207 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3208
3209 module_param(force_scofix, bool, 0644);
3210 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3211
3212 module_param(reset, bool, 0644);
3213 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3214
3215 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3216 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3217 MODULE_VERSION(VERSION);
3218 MODULE_LICENSE("GPL");
Linux with added FPC-III support