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Merge tag 'drm-coc-for-v4.12-rc1' of git://people.freedesktop.org/~airlied/linux
[mirror_ubuntu-bionic-kernel.git] / drivers / bluetooth / btusb.c
1 /*
2 *
3 * Generic Bluetooth USB driver
4 *
5 * Copyright (C) 2005-2008 Marcel Holtmann <marcel@holtmann.org>
6 *
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24 #include <linux/module.h>
25 #include <linux/usb.h>
26 #include <linux/firmware.h>
27 #include <linux/of_device.h>
28 #include <linux/of_irq.h>
29 #include <linux/suspend.h>
30 #include <asm/unaligned.h>
31
32 #include <net/bluetooth/bluetooth.h>
33 #include <net/bluetooth/hci_core.h>
34
35 #include "btintel.h"
36 #include "btbcm.h"
37 #include "btrtl.h"
38
39 #define VERSION "0.8"
40
41 static bool disable_scofix;
42 static bool force_scofix;
43
44 static bool reset = true;
45
46 static struct usb_driver btusb_driver;
47
48 #define BTUSB_IGNORE 0x01
49 #define BTUSB_DIGIANSWER 0x02
50 #define BTUSB_CSR 0x04
51 #define BTUSB_SNIFFER 0x08
52 #define BTUSB_BCM92035 0x10
53 #define BTUSB_BROKEN_ISOC 0x20
54 #define BTUSB_WRONG_SCO_MTU 0x40
55 #define BTUSB_ATH3012 0x80
56 #define BTUSB_INTEL 0x100
57 #define BTUSB_INTEL_BOOT 0x200
58 #define BTUSB_BCM_PATCHRAM 0x400
59 #define BTUSB_MARVELL 0x800
60 #define BTUSB_SWAVE 0x1000
61 #define BTUSB_INTEL_NEW 0x2000
62 #define BTUSB_AMP 0x4000
63 #define BTUSB_QCA_ROME 0x8000
64 #define BTUSB_BCM_APPLE 0x10000
65 #define BTUSB_REALTEK 0x20000
66 #define BTUSB_BCM2045 0x40000
67 #define BTUSB_IFNUM_2 0x80000
68 #define BTUSB_CW6622 0x100000
69
70 static const struct usb_device_id btusb_table[] = {
71 /* Generic Bluetooth USB device */
72 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
73
74 /* Generic Bluetooth AMP device */
75 { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
76
77 /* Generic Bluetooth USB interface */
78 { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
79
80 /* Apple-specific (Broadcom) devices */
81 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
82 .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
83
84 /* MediaTek MT76x0E */
85 { USB_DEVICE(0x0e8d, 0x763f) },
86
87 /* Broadcom SoftSailing reporting vendor specific */
88 { USB_DEVICE(0x0a5c, 0x21e1) },
89
90 /* Apple MacBookPro 7,1 */
91 { USB_DEVICE(0x05ac, 0x8213) },
92
93 /* Apple iMac11,1 */
94 { USB_DEVICE(0x05ac, 0x8215) },
95
96 /* Apple MacBookPro6,2 */
97 { USB_DEVICE(0x05ac, 0x8218) },
98
99 /* Apple MacBookAir3,1, MacBookAir3,2 */
100 { USB_DEVICE(0x05ac, 0x821b) },
101
102 /* Apple MacBookAir4,1 */
103 { USB_DEVICE(0x05ac, 0x821f) },
104
105 /* Apple MacBookPro8,2 */
106 { USB_DEVICE(0x05ac, 0x821a) },
107
108 /* Apple MacMini5,1 */
109 { USB_DEVICE(0x05ac, 0x8281) },
110
111 /* AVM BlueFRITZ! USB v2.0 */
112 { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
113
114 /* Bluetooth Ultraport Module from IBM */
115 { USB_DEVICE(0x04bf, 0x030a) },
116
117 /* ALPS Modules with non-standard id */
118 { USB_DEVICE(0x044e, 0x3001) },
119 { USB_DEVICE(0x044e, 0x3002) },
120
121 /* Ericsson with non-standard id */
122 { USB_DEVICE(0x0bdb, 0x1002) },
123
124 /* Canyon CN-BTU1 with HID interfaces */
125 { USB_DEVICE(0x0c10, 0x0000) },
126
127 /* Broadcom BCM20702A0 */
128 { USB_DEVICE(0x413c, 0x8197) },
129
130 /* Broadcom BCM20702B0 (Dynex/Insignia) */
131 { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
132
133 /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
134 { USB_DEVICE(0x105b, 0xe065), .driver_info = BTUSB_BCM_PATCHRAM },
135
136 /* Broadcom BCM920703 (HTC Vive) */
137 { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
138 .driver_info = BTUSB_BCM_PATCHRAM },
139
140 /* Foxconn - Hon Hai */
141 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
142 .driver_info = BTUSB_BCM_PATCHRAM },
143
144 /* Lite-On Technology - Broadcom based */
145 { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
146 .driver_info = BTUSB_BCM_PATCHRAM },
147
148 /* Broadcom devices with vendor specific id */
149 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
150 .driver_info = BTUSB_BCM_PATCHRAM },
151
152 /* ASUSTek Computer - Broadcom based */
153 { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
154 .driver_info = BTUSB_BCM_PATCHRAM },
155
156 /* Belkin F8065bf - Broadcom based */
157 { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
158 .driver_info = BTUSB_BCM_PATCHRAM },
159
160 /* IMC Networks - Broadcom based */
161 { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
162 .driver_info = BTUSB_BCM_PATCHRAM },
163
164 /* Dell Computer - Broadcom based */
165 { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
166 .driver_info = BTUSB_BCM_PATCHRAM },
167
168 /* Toshiba Corp - Broadcom based */
169 { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
170 .driver_info = BTUSB_BCM_PATCHRAM },
171
172 /* Intel Bluetooth USB Bootloader (RAM module) */
173 { USB_DEVICE(0x8087, 0x0a5a),
174 .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
175
176 { } /* Terminating entry */
177 };
178
179 MODULE_DEVICE_TABLE(usb, btusb_table);
180
181 static const struct usb_device_id blacklist_table[] = {
182 /* CSR BlueCore devices */
183 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
184
185 /* Broadcom BCM2033 without firmware */
186 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
187
188 /* Broadcom BCM2045 devices */
189 { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
190
191 /* Atheros 3011 with sflash firmware */
192 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
193 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
194 { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
195 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
196 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
197 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
198 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
199
200 /* Atheros AR9285 Malbec with sflash firmware */
201 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
202
203 /* Atheros 3012 with sflash firmware */
204 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
205 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
206 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
207 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
208 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
209 { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
210 { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
211 { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
212 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
213 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
214 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
215 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
216 { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
217 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
218 { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
219 { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
220 { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
221 { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
222 { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
223 { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
224 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
225 { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
226 { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
227 { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
228 { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
229 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
230 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
231 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
232 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
233 { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
234 { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
235 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
236 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
237 { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
238 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
239 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
240 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
241 { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
242 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
243 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
244 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
245 { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
246 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
247 { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
248 { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
249 { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
250 { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
251 { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
252 { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
253 { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
254
255 /* Atheros AR5BBU12 with sflash firmware */
256 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
257
258 /* Atheros AR5BBU12 with sflash firmware */
259 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
260 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
261
262 /* QCA ROME chipset */
263 { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
264 { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME },
265 { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
266 { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME },
267 { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
268 { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME },
269 { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME },
270
271 /* Broadcom BCM2035 */
272 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
273 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
274 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
275
276 /* Broadcom BCM2045 */
277 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
278 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
279
280 /* IBM/Lenovo ThinkPad with Broadcom chip */
281 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
282 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
283
284 /* HP laptop with Broadcom chip */
285 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
286
287 /* Dell laptop with Broadcom chip */
288 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
289
290 /* Dell Wireless 370 and 410 devices */
291 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
292 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
293
294 /* Belkin F8T012 and F8T013 devices */
295 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
296 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
297
298 /* Asus WL-BTD202 device */
299 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
300
301 /* Kensington Bluetooth USB adapter */
302 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
303
304 /* RTX Telecom based adapters with buggy SCO support */
305 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
306 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
307
308 /* CONWISE Technology based adapters with buggy SCO support */
309 { USB_DEVICE(0x0e5e, 0x6622),
310 .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
311
312 /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
313 { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
314
315 /* Digianswer devices */
316 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
317 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
318
319 /* CSR BlueCore Bluetooth Sniffer */
320 { USB_DEVICE(0x0a12, 0x0002),
321 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
322
323 /* Frontline ComProbe Bluetooth Sniffer */
324 { USB_DEVICE(0x16d3, 0x0002),
325 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
326
327 /* Marvell Bluetooth devices */
328 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
329 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
330 { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
331
332 /* Intel Bluetooth devices */
333 { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW },
334 { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
335 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
336 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
337 { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
338 { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL },
339
340 /* Other Intel Bluetooth devices */
341 { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
342 .driver_info = BTUSB_IGNORE },
343
344 /* Realtek Bluetooth devices */
345 { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
346 .driver_info = BTUSB_REALTEK },
347
348 /* Additional Realtek 8723AE Bluetooth devices */
349 { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
350 { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
351
352 /* Additional Realtek 8723BE Bluetooth devices */
353 { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
354 { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
355 { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
356 { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
357 { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
358
359 /* Additional Realtek 8821AE Bluetooth devices */
360 { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
361 { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
362 { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
363 { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
364 { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
365
366 /* Silicon Wave based devices */
367 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
368
369 { } /* Terminating entry */
370 };
371
372 #define BTUSB_MAX_ISOC_FRAMES 10
373
374 #define BTUSB_INTR_RUNNING 0
375 #define BTUSB_BULK_RUNNING 1
376 #define BTUSB_ISOC_RUNNING 2
377 #define BTUSB_SUSPENDING 3
378 #define BTUSB_DID_ISO_RESUME 4
379 #define BTUSB_BOOTLOADER 5
380 #define BTUSB_DOWNLOADING 6
381 #define BTUSB_FIRMWARE_LOADED 7
382 #define BTUSB_FIRMWARE_FAILED 8
383 #define BTUSB_BOOTING 9
384 #define BTUSB_RESET_RESUME 10
385 #define BTUSB_DIAG_RUNNING 11
386 #define BTUSB_OOB_WAKE_ENABLED 12
387
388 struct btusb_data {
389 struct hci_dev *hdev;
390 struct usb_device *udev;
391 struct usb_interface *intf;
392 struct usb_interface *isoc;
393 struct usb_interface *diag;
394
395 unsigned long flags;
396
397 struct work_struct work;
398 struct work_struct waker;
399
400 struct usb_anchor deferred;
401 struct usb_anchor tx_anchor;
402 int tx_in_flight;
403 spinlock_t txlock;
404
405 struct usb_anchor intr_anchor;
406 struct usb_anchor bulk_anchor;
407 struct usb_anchor isoc_anchor;
408 struct usb_anchor diag_anchor;
409 spinlock_t rxlock;
410
411 struct sk_buff *evt_skb;
412 struct sk_buff *acl_skb;
413 struct sk_buff *sco_skb;
414
415 struct usb_endpoint_descriptor *intr_ep;
416 struct usb_endpoint_descriptor *bulk_tx_ep;
417 struct usb_endpoint_descriptor *bulk_rx_ep;
418 struct usb_endpoint_descriptor *isoc_tx_ep;
419 struct usb_endpoint_descriptor *isoc_rx_ep;
420 struct usb_endpoint_descriptor *diag_tx_ep;
421 struct usb_endpoint_descriptor *diag_rx_ep;
422
423 __u8 cmdreq_type;
424 __u8 cmdreq;
425
426 unsigned int sco_num;
427 int isoc_altsetting;
428 int suspend_count;
429
430 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
431 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
432
433 int (*setup_on_usb)(struct hci_dev *hdev);
434
435 int oob_wake_irq; /* irq for out-of-band wake-on-bt */
436 };
437
438 static inline void btusb_free_frags(struct btusb_data *data)
439 {
440 unsigned long flags;
441
442 spin_lock_irqsave(&data->rxlock, flags);
443
444 kfree_skb(data->evt_skb);
445 data->evt_skb = NULL;
446
447 kfree_skb(data->acl_skb);
448 data->acl_skb = NULL;
449
450 kfree_skb(data->sco_skb);
451 data->sco_skb = NULL;
452
453 spin_unlock_irqrestore(&data->rxlock, flags);
454 }
455
456 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
457 {
458 struct sk_buff *skb;
459 int err = 0;
460
461 spin_lock(&data->rxlock);
462 skb = data->evt_skb;
463
464 while (count) {
465 int len;
466
467 if (!skb) {
468 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
469 if (!skb) {
470 err = -ENOMEM;
471 break;
472 }
473
474 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
475 hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
476 }
477
478 len = min_t(uint, hci_skb_expect(skb), count);
479 memcpy(skb_put(skb, len), buffer, len);
480
481 count -= len;
482 buffer += len;
483 hci_skb_expect(skb) -= len;
484
485 if (skb->len == HCI_EVENT_HDR_SIZE) {
486 /* Complete event header */
487 hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
488
489 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
490 kfree_skb(skb);
491 skb = NULL;
492
493 err = -EILSEQ;
494 break;
495 }
496 }
497
498 if (!hci_skb_expect(skb)) {
499 /* Complete frame */
500 data->recv_event(data->hdev, skb);
501 skb = NULL;
502 }
503 }
504
505 data->evt_skb = skb;
506 spin_unlock(&data->rxlock);
507
508 return err;
509 }
510
511 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
512 {
513 struct sk_buff *skb;
514 int err = 0;
515
516 spin_lock(&data->rxlock);
517 skb = data->acl_skb;
518
519 while (count) {
520 int len;
521
522 if (!skb) {
523 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
524 if (!skb) {
525 err = -ENOMEM;
526 break;
527 }
528
529 hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
530 hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
531 }
532
533 len = min_t(uint, hci_skb_expect(skb), count);
534 memcpy(skb_put(skb, len), buffer, len);
535
536 count -= len;
537 buffer += len;
538 hci_skb_expect(skb) -= len;
539
540 if (skb->len == HCI_ACL_HDR_SIZE) {
541 __le16 dlen = hci_acl_hdr(skb)->dlen;
542
543 /* Complete ACL header */
544 hci_skb_expect(skb) = __le16_to_cpu(dlen);
545
546 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
547 kfree_skb(skb);
548 skb = NULL;
549
550 err = -EILSEQ;
551 break;
552 }
553 }
554
555 if (!hci_skb_expect(skb)) {
556 /* Complete frame */
557 hci_recv_frame(data->hdev, skb);
558 skb = NULL;
559 }
560 }
561
562 data->acl_skb = skb;
563 spin_unlock(&data->rxlock);
564
565 return err;
566 }
567
568 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
569 {
570 struct sk_buff *skb;
571 int err = 0;
572
573 spin_lock(&data->rxlock);
574 skb = data->sco_skb;
575
576 while (count) {
577 int len;
578
579 if (!skb) {
580 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
581 if (!skb) {
582 err = -ENOMEM;
583 break;
584 }
585
586 hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
587 hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
588 }
589
590 len = min_t(uint, hci_skb_expect(skb), count);
591 memcpy(skb_put(skb, len), buffer, len);
592
593 count -= len;
594 buffer += len;
595 hci_skb_expect(skb) -= len;
596
597 if (skb->len == HCI_SCO_HDR_SIZE) {
598 /* Complete SCO header */
599 hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
600
601 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
602 kfree_skb(skb);
603 skb = NULL;
604
605 err = -EILSEQ;
606 break;
607 }
608 }
609
610 if (!hci_skb_expect(skb)) {
611 /* Complete frame */
612 hci_recv_frame(data->hdev, skb);
613 skb = NULL;
614 }
615 }
616
617 data->sco_skb = skb;
618 spin_unlock(&data->rxlock);
619
620 return err;
621 }
622
623 static void btusb_intr_complete(struct urb *urb)
624 {
625 struct hci_dev *hdev = urb->context;
626 struct btusb_data *data = hci_get_drvdata(hdev);
627 int err;
628
629 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
630 urb->actual_length);
631
632 if (!test_bit(HCI_RUNNING, &hdev->flags))
633 return;
634
635 if (urb->status == 0) {
636 hdev->stat.byte_rx += urb->actual_length;
637
638 if (btusb_recv_intr(data, urb->transfer_buffer,
639 urb->actual_length) < 0) {
640 BT_ERR("%s corrupted event packet", hdev->name);
641 hdev->stat.err_rx++;
642 }
643 } else if (urb->status == -ENOENT) {
644 /* Avoid suspend failed when usb_kill_urb */
645 return;
646 }
647
648 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
649 return;
650
651 usb_mark_last_busy(data->udev);
652 usb_anchor_urb(urb, &data->intr_anchor);
653
654 err = usb_submit_urb(urb, GFP_ATOMIC);
655 if (err < 0) {
656 /* -EPERM: urb is being killed;
657 * -ENODEV: device got disconnected */
658 if (err != -EPERM && err != -ENODEV)
659 BT_ERR("%s urb %p failed to resubmit (%d)",
660 hdev->name, urb, -err);
661 usb_unanchor_urb(urb);
662 }
663 }
664
665 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
666 {
667 struct btusb_data *data = hci_get_drvdata(hdev);
668 struct urb *urb;
669 unsigned char *buf;
670 unsigned int pipe;
671 int err, size;
672
673 BT_DBG("%s", hdev->name);
674
675 if (!data->intr_ep)
676 return -ENODEV;
677
678 urb = usb_alloc_urb(0, mem_flags);
679 if (!urb)
680 return -ENOMEM;
681
682 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
683
684 buf = kmalloc(size, mem_flags);
685 if (!buf) {
686 usb_free_urb(urb);
687 return -ENOMEM;
688 }
689
690 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
691
692 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
693 btusb_intr_complete, hdev, data->intr_ep->bInterval);
694
695 urb->transfer_flags |= URB_FREE_BUFFER;
696
697 usb_anchor_urb(urb, &data->intr_anchor);
698
699 err = usb_submit_urb(urb, mem_flags);
700 if (err < 0) {
701 if (err != -EPERM && err != -ENODEV)
702 BT_ERR("%s urb %p submission failed (%d)",
703 hdev->name, urb, -err);
704 usb_unanchor_urb(urb);
705 }
706
707 usb_free_urb(urb);
708
709 return err;
710 }
711
712 static void btusb_bulk_complete(struct urb *urb)
713 {
714 struct hci_dev *hdev = urb->context;
715 struct btusb_data *data = hci_get_drvdata(hdev);
716 int err;
717
718 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
719 urb->actual_length);
720
721 if (!test_bit(HCI_RUNNING, &hdev->flags))
722 return;
723
724 if (urb->status == 0) {
725 hdev->stat.byte_rx += urb->actual_length;
726
727 if (data->recv_bulk(data, urb->transfer_buffer,
728 urb->actual_length) < 0) {
729 BT_ERR("%s corrupted ACL packet", hdev->name);
730 hdev->stat.err_rx++;
731 }
732 } else if (urb->status == -ENOENT) {
733 /* Avoid suspend failed when usb_kill_urb */
734 return;
735 }
736
737 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
738 return;
739
740 usb_anchor_urb(urb, &data->bulk_anchor);
741 usb_mark_last_busy(data->udev);
742
743 err = usb_submit_urb(urb, GFP_ATOMIC);
744 if (err < 0) {
745 /* -EPERM: urb is being killed;
746 * -ENODEV: device got disconnected */
747 if (err != -EPERM && err != -ENODEV)
748 BT_ERR("%s urb %p failed to resubmit (%d)",
749 hdev->name, urb, -err);
750 usb_unanchor_urb(urb);
751 }
752 }
753
754 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
755 {
756 struct btusb_data *data = hci_get_drvdata(hdev);
757 struct urb *urb;
758 unsigned char *buf;
759 unsigned int pipe;
760 int err, size = HCI_MAX_FRAME_SIZE;
761
762 BT_DBG("%s", hdev->name);
763
764 if (!data->bulk_rx_ep)
765 return -ENODEV;
766
767 urb = usb_alloc_urb(0, mem_flags);
768 if (!urb)
769 return -ENOMEM;
770
771 buf = kmalloc(size, mem_flags);
772 if (!buf) {
773 usb_free_urb(urb);
774 return -ENOMEM;
775 }
776
777 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
778
779 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
780 btusb_bulk_complete, hdev);
781
782 urb->transfer_flags |= URB_FREE_BUFFER;
783
784 usb_mark_last_busy(data->udev);
785 usb_anchor_urb(urb, &data->bulk_anchor);
786
787 err = usb_submit_urb(urb, mem_flags);
788 if (err < 0) {
789 if (err != -EPERM && err != -ENODEV)
790 BT_ERR("%s urb %p submission failed (%d)",
791 hdev->name, urb, -err);
792 usb_unanchor_urb(urb);
793 }
794
795 usb_free_urb(urb);
796
797 return err;
798 }
799
800 static void btusb_isoc_complete(struct urb *urb)
801 {
802 struct hci_dev *hdev = urb->context;
803 struct btusb_data *data = hci_get_drvdata(hdev);
804 int i, err;
805
806 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
807 urb->actual_length);
808
809 if (!test_bit(HCI_RUNNING, &hdev->flags))
810 return;
811
812 if (urb->status == 0) {
813 for (i = 0; i < urb->number_of_packets; i++) {
814 unsigned int offset = urb->iso_frame_desc[i].offset;
815 unsigned int length = urb->iso_frame_desc[i].actual_length;
816
817 if (urb->iso_frame_desc[i].status)
818 continue;
819
820 hdev->stat.byte_rx += length;
821
822 if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
823 length) < 0) {
824 BT_ERR("%s corrupted SCO packet", hdev->name);
825 hdev->stat.err_rx++;
826 }
827 }
828 } else if (urb->status == -ENOENT) {
829 /* Avoid suspend failed when usb_kill_urb */
830 return;
831 }
832
833 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
834 return;
835
836 usb_anchor_urb(urb, &data->isoc_anchor);
837
838 err = usb_submit_urb(urb, GFP_ATOMIC);
839 if (err < 0) {
840 /* -EPERM: urb is being killed;
841 * -ENODEV: device got disconnected */
842 if (err != -EPERM && err != -ENODEV)
843 BT_ERR("%s urb %p failed to resubmit (%d)",
844 hdev->name, urb, -err);
845 usb_unanchor_urb(urb);
846 }
847 }
848
849 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
850 {
851 int i, offset = 0;
852
853 BT_DBG("len %d mtu %d", len, mtu);
854
855 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
856 i++, offset += mtu, len -= mtu) {
857 urb->iso_frame_desc[i].offset = offset;
858 urb->iso_frame_desc[i].length = mtu;
859 }
860
861 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
862 urb->iso_frame_desc[i].offset = offset;
863 urb->iso_frame_desc[i].length = len;
864 i++;
865 }
866
867 urb->number_of_packets = i;
868 }
869
870 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
871 {
872 struct btusb_data *data = hci_get_drvdata(hdev);
873 struct urb *urb;
874 unsigned char *buf;
875 unsigned int pipe;
876 int err, size;
877
878 BT_DBG("%s", hdev->name);
879
880 if (!data->isoc_rx_ep)
881 return -ENODEV;
882
883 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
884 if (!urb)
885 return -ENOMEM;
886
887 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
888 BTUSB_MAX_ISOC_FRAMES;
889
890 buf = kmalloc(size, mem_flags);
891 if (!buf) {
892 usb_free_urb(urb);
893 return -ENOMEM;
894 }
895
896 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
897
898 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
899 hdev, data->isoc_rx_ep->bInterval);
900
901 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
902
903 __fill_isoc_descriptor(urb, size,
904 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
905
906 usb_anchor_urb(urb, &data->isoc_anchor);
907
908 err = usb_submit_urb(urb, mem_flags);
909 if (err < 0) {
910 if (err != -EPERM && err != -ENODEV)
911 BT_ERR("%s urb %p submission failed (%d)",
912 hdev->name, urb, -err);
913 usb_unanchor_urb(urb);
914 }
915
916 usb_free_urb(urb);
917
918 return err;
919 }
920
921 static void btusb_diag_complete(struct urb *urb)
922 {
923 struct hci_dev *hdev = urb->context;
924 struct btusb_data *data = hci_get_drvdata(hdev);
925 int err;
926
927 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
928 urb->actual_length);
929
930 if (urb->status == 0) {
931 struct sk_buff *skb;
932
933 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
934 if (skb) {
935 memcpy(skb_put(skb, urb->actual_length),
936 urb->transfer_buffer, urb->actual_length);
937 hci_recv_diag(hdev, skb);
938 }
939 } else if (urb->status == -ENOENT) {
940 /* Avoid suspend failed when usb_kill_urb */
941 return;
942 }
943
944 if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
945 return;
946
947 usb_anchor_urb(urb, &data->diag_anchor);
948 usb_mark_last_busy(data->udev);
949
950 err = usb_submit_urb(urb, GFP_ATOMIC);
951 if (err < 0) {
952 /* -EPERM: urb is being killed;
953 * -ENODEV: device got disconnected */
954 if (err != -EPERM && err != -ENODEV)
955 BT_ERR("%s urb %p failed to resubmit (%d)",
956 hdev->name, urb, -err);
957 usb_unanchor_urb(urb);
958 }
959 }
960
961 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
962 {
963 struct btusb_data *data = hci_get_drvdata(hdev);
964 struct urb *urb;
965 unsigned char *buf;
966 unsigned int pipe;
967 int err, size = HCI_MAX_FRAME_SIZE;
968
969 BT_DBG("%s", hdev->name);
970
971 if (!data->diag_rx_ep)
972 return -ENODEV;
973
974 urb = usb_alloc_urb(0, mem_flags);
975 if (!urb)
976 return -ENOMEM;
977
978 buf = kmalloc(size, mem_flags);
979 if (!buf) {
980 usb_free_urb(urb);
981 return -ENOMEM;
982 }
983
984 pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
985
986 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
987 btusb_diag_complete, hdev);
988
989 urb->transfer_flags |= URB_FREE_BUFFER;
990
991 usb_mark_last_busy(data->udev);
992 usb_anchor_urb(urb, &data->diag_anchor);
993
994 err = usb_submit_urb(urb, mem_flags);
995 if (err < 0) {
996 if (err != -EPERM && err != -ENODEV)
997 BT_ERR("%s urb %p submission failed (%d)",
998 hdev->name, urb, -err);
999 usb_unanchor_urb(urb);
1000 }
1001
1002 usb_free_urb(urb);
1003
1004 return err;
1005 }
1006
1007 static void btusb_tx_complete(struct urb *urb)
1008 {
1009 struct sk_buff *skb = urb->context;
1010 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1011 struct btusb_data *data = hci_get_drvdata(hdev);
1012
1013 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1014 urb->actual_length);
1015
1016 if (!test_bit(HCI_RUNNING, &hdev->flags))
1017 goto done;
1018
1019 if (!urb->status)
1020 hdev->stat.byte_tx += urb->transfer_buffer_length;
1021 else
1022 hdev->stat.err_tx++;
1023
1024 done:
1025 spin_lock(&data->txlock);
1026 data->tx_in_flight--;
1027 spin_unlock(&data->txlock);
1028
1029 kfree(urb->setup_packet);
1030
1031 kfree_skb(skb);
1032 }
1033
1034 static void btusb_isoc_tx_complete(struct urb *urb)
1035 {
1036 struct sk_buff *skb = urb->context;
1037 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1038
1039 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1040 urb->actual_length);
1041
1042 if (!test_bit(HCI_RUNNING, &hdev->flags))
1043 goto done;
1044
1045 if (!urb->status)
1046 hdev->stat.byte_tx += urb->transfer_buffer_length;
1047 else
1048 hdev->stat.err_tx++;
1049
1050 done:
1051 kfree(urb->setup_packet);
1052
1053 kfree_skb(skb);
1054 }
1055
1056 static int btusb_open(struct hci_dev *hdev)
1057 {
1058 struct btusb_data *data = hci_get_drvdata(hdev);
1059 int err;
1060
1061 BT_DBG("%s", hdev->name);
1062
1063 err = usb_autopm_get_interface(data->intf);
1064 if (err < 0)
1065 return err;
1066
1067 /* Patching USB firmware files prior to starting any URBs of HCI path
1068 * It is more safe to use USB bulk channel for downloading USB patch
1069 */
1070 if (data->setup_on_usb) {
1071 err = data->setup_on_usb(hdev);
1072 if (err < 0)
1073 return err;
1074 }
1075
1076 data->intf->needs_remote_wakeup = 1;
1077
1078 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1079 goto done;
1080
1081 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1082 if (err < 0)
1083 goto failed;
1084
1085 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1086 if (err < 0) {
1087 usb_kill_anchored_urbs(&data->intr_anchor);
1088 goto failed;
1089 }
1090
1091 set_bit(BTUSB_BULK_RUNNING, &data->flags);
1092 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1093
1094 if (data->diag) {
1095 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1096 set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1097 }
1098
1099 done:
1100 usb_autopm_put_interface(data->intf);
1101 return 0;
1102
1103 failed:
1104 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1105 usb_autopm_put_interface(data->intf);
1106 return err;
1107 }
1108
1109 static void btusb_stop_traffic(struct btusb_data *data)
1110 {
1111 usb_kill_anchored_urbs(&data->intr_anchor);
1112 usb_kill_anchored_urbs(&data->bulk_anchor);
1113 usb_kill_anchored_urbs(&data->isoc_anchor);
1114 usb_kill_anchored_urbs(&data->diag_anchor);
1115 }
1116
1117 static int btusb_close(struct hci_dev *hdev)
1118 {
1119 struct btusb_data *data = hci_get_drvdata(hdev);
1120 int err;
1121
1122 BT_DBG("%s", hdev->name);
1123
1124 cancel_work_sync(&data->work);
1125 cancel_work_sync(&data->waker);
1126
1127 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1128 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1129 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1130 clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1131
1132 btusb_stop_traffic(data);
1133 btusb_free_frags(data);
1134
1135 err = usb_autopm_get_interface(data->intf);
1136 if (err < 0)
1137 goto failed;
1138
1139 data->intf->needs_remote_wakeup = 0;
1140 usb_autopm_put_interface(data->intf);
1141
1142 failed:
1143 usb_scuttle_anchored_urbs(&data->deferred);
1144 return 0;
1145 }
1146
1147 static int btusb_flush(struct hci_dev *hdev)
1148 {
1149 struct btusb_data *data = hci_get_drvdata(hdev);
1150
1151 BT_DBG("%s", hdev->name);
1152
1153 usb_kill_anchored_urbs(&data->tx_anchor);
1154 btusb_free_frags(data);
1155
1156 return 0;
1157 }
1158
1159 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1160 {
1161 struct btusb_data *data = hci_get_drvdata(hdev);
1162 struct usb_ctrlrequest *dr;
1163 struct urb *urb;
1164 unsigned int pipe;
1165
1166 urb = usb_alloc_urb(0, GFP_KERNEL);
1167 if (!urb)
1168 return ERR_PTR(-ENOMEM);
1169
1170 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1171 if (!dr) {
1172 usb_free_urb(urb);
1173 return ERR_PTR(-ENOMEM);
1174 }
1175
1176 dr->bRequestType = data->cmdreq_type;
1177 dr->bRequest = data->cmdreq;
1178 dr->wIndex = 0;
1179 dr->wValue = 0;
1180 dr->wLength = __cpu_to_le16(skb->len);
1181
1182 pipe = usb_sndctrlpipe(data->udev, 0x00);
1183
1184 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1185 skb->data, skb->len, btusb_tx_complete, skb);
1186
1187 skb->dev = (void *)hdev;
1188
1189 return urb;
1190 }
1191
1192 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1193 {
1194 struct btusb_data *data = hci_get_drvdata(hdev);
1195 struct urb *urb;
1196 unsigned int pipe;
1197
1198 if (!data->bulk_tx_ep)
1199 return ERR_PTR(-ENODEV);
1200
1201 urb = usb_alloc_urb(0, GFP_KERNEL);
1202 if (!urb)
1203 return ERR_PTR(-ENOMEM);
1204
1205 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1206
1207 usb_fill_bulk_urb(urb, data->udev, pipe,
1208 skb->data, skb->len, btusb_tx_complete, skb);
1209
1210 skb->dev = (void *)hdev;
1211
1212 return urb;
1213 }
1214
1215 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1216 {
1217 struct btusb_data *data = hci_get_drvdata(hdev);
1218 struct urb *urb;
1219 unsigned int pipe;
1220
1221 if (!data->isoc_tx_ep)
1222 return ERR_PTR(-ENODEV);
1223
1224 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1225 if (!urb)
1226 return ERR_PTR(-ENOMEM);
1227
1228 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1229
1230 usb_fill_int_urb(urb, data->udev, pipe,
1231 skb->data, skb->len, btusb_isoc_tx_complete,
1232 skb, data->isoc_tx_ep->bInterval);
1233
1234 urb->transfer_flags = URB_ISO_ASAP;
1235
1236 __fill_isoc_descriptor(urb, skb->len,
1237 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1238
1239 skb->dev = (void *)hdev;
1240
1241 return urb;
1242 }
1243
1244 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1245 {
1246 struct btusb_data *data = hci_get_drvdata(hdev);
1247 int err;
1248
1249 usb_anchor_urb(urb, &data->tx_anchor);
1250
1251 err = usb_submit_urb(urb, GFP_KERNEL);
1252 if (err < 0) {
1253 if (err != -EPERM && err != -ENODEV)
1254 BT_ERR("%s urb %p submission failed (%d)",
1255 hdev->name, urb, -err);
1256 kfree(urb->setup_packet);
1257 usb_unanchor_urb(urb);
1258 } else {
1259 usb_mark_last_busy(data->udev);
1260 }
1261
1262 usb_free_urb(urb);
1263 return err;
1264 }
1265
1266 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1267 {
1268 struct btusb_data *data = hci_get_drvdata(hdev);
1269 unsigned long flags;
1270 bool suspending;
1271
1272 spin_lock_irqsave(&data->txlock, flags);
1273 suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1274 if (!suspending)
1275 data->tx_in_flight++;
1276 spin_unlock_irqrestore(&data->txlock, flags);
1277
1278 if (!suspending)
1279 return submit_tx_urb(hdev, urb);
1280
1281 usb_anchor_urb(urb, &data->deferred);
1282 schedule_work(&data->waker);
1283
1284 usb_free_urb(urb);
1285 return 0;
1286 }
1287
1288 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1289 {
1290 struct urb *urb;
1291
1292 BT_DBG("%s", hdev->name);
1293
1294 switch (hci_skb_pkt_type(skb)) {
1295 case HCI_COMMAND_PKT:
1296 urb = alloc_ctrl_urb(hdev, skb);
1297 if (IS_ERR(urb))
1298 return PTR_ERR(urb);
1299
1300 hdev->stat.cmd_tx++;
1301 return submit_or_queue_tx_urb(hdev, urb);
1302
1303 case HCI_ACLDATA_PKT:
1304 urb = alloc_bulk_urb(hdev, skb);
1305 if (IS_ERR(urb))
1306 return PTR_ERR(urb);
1307
1308 hdev->stat.acl_tx++;
1309 return submit_or_queue_tx_urb(hdev, urb);
1310
1311 case HCI_SCODATA_PKT:
1312 if (hci_conn_num(hdev, SCO_LINK) < 1)
1313 return -ENODEV;
1314
1315 urb = alloc_isoc_urb(hdev, skb);
1316 if (IS_ERR(urb))
1317 return PTR_ERR(urb);
1318
1319 hdev->stat.sco_tx++;
1320 return submit_tx_urb(hdev, urb);
1321 }
1322
1323 return -EILSEQ;
1324 }
1325
1326 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1327 {
1328 struct btusb_data *data = hci_get_drvdata(hdev);
1329
1330 BT_DBG("%s evt %d", hdev->name, evt);
1331
1332 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1333 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1334 schedule_work(&data->work);
1335 }
1336 }
1337
1338 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1339 {
1340 struct btusb_data *data = hci_get_drvdata(hdev);
1341 struct usb_interface *intf = data->isoc;
1342 struct usb_endpoint_descriptor *ep_desc;
1343 int i, err;
1344
1345 if (!data->isoc)
1346 return -ENODEV;
1347
1348 err = usb_set_interface(data->udev, 1, altsetting);
1349 if (err < 0) {
1350 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1351 return err;
1352 }
1353
1354 data->isoc_altsetting = altsetting;
1355
1356 data->isoc_tx_ep = NULL;
1357 data->isoc_rx_ep = NULL;
1358
1359 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1360 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1361
1362 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1363 data->isoc_tx_ep = ep_desc;
1364 continue;
1365 }
1366
1367 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1368 data->isoc_rx_ep = ep_desc;
1369 continue;
1370 }
1371 }
1372
1373 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1374 BT_ERR("%s invalid SCO descriptors", hdev->name);
1375 return -ENODEV;
1376 }
1377
1378 return 0;
1379 }
1380
1381 static void btusb_work(struct work_struct *work)
1382 {
1383 struct btusb_data *data = container_of(work, struct btusb_data, work);
1384 struct hci_dev *hdev = data->hdev;
1385 int new_alts;
1386 int err;
1387
1388 if (data->sco_num > 0) {
1389 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1390 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1391 if (err < 0) {
1392 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1393 usb_kill_anchored_urbs(&data->isoc_anchor);
1394 return;
1395 }
1396
1397 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1398 }
1399
1400 if (hdev->voice_setting & 0x0020) {
1401 static const int alts[3] = { 2, 4, 5 };
1402
1403 new_alts = alts[data->sco_num - 1];
1404 } else {
1405 new_alts = data->sco_num;
1406 }
1407
1408 if (data->isoc_altsetting != new_alts) {
1409 unsigned long flags;
1410
1411 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1412 usb_kill_anchored_urbs(&data->isoc_anchor);
1413
1414 /* When isochronous alternate setting needs to be
1415 * changed, because SCO connection has been added
1416 * or removed, a packet fragment may be left in the
1417 * reassembling state. This could lead to wrongly
1418 * assembled fragments.
1419 *
1420 * Clear outstanding fragment when selecting a new
1421 * alternate setting.
1422 */
1423 spin_lock_irqsave(&data->rxlock, flags);
1424 kfree_skb(data->sco_skb);
1425 data->sco_skb = NULL;
1426 spin_unlock_irqrestore(&data->rxlock, flags);
1427
1428 if (__set_isoc_interface(hdev, new_alts) < 0)
1429 return;
1430 }
1431
1432 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1433 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1434 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1435 else
1436 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1437 }
1438 } else {
1439 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1440 usb_kill_anchored_urbs(&data->isoc_anchor);
1441
1442 __set_isoc_interface(hdev, 0);
1443 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1444 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1445 }
1446 }
1447
1448 static void btusb_waker(struct work_struct *work)
1449 {
1450 struct btusb_data *data = container_of(work, struct btusb_data, waker);
1451 int err;
1452
1453 err = usb_autopm_get_interface(data->intf);
1454 if (err < 0)
1455 return;
1456
1457 usb_autopm_put_interface(data->intf);
1458 }
1459
1460 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1461 {
1462 struct sk_buff *skb;
1463 u8 val = 0x00;
1464
1465 BT_DBG("%s", hdev->name);
1466
1467 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1468 if (IS_ERR(skb))
1469 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1470 else
1471 kfree_skb(skb);
1472
1473 return 0;
1474 }
1475
1476 static int btusb_setup_csr(struct hci_dev *hdev)
1477 {
1478 struct hci_rp_read_local_version *rp;
1479 struct sk_buff *skb;
1480
1481 BT_DBG("%s", hdev->name);
1482
1483 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1484 HCI_INIT_TIMEOUT);
1485 if (IS_ERR(skb)) {
1486 int err = PTR_ERR(skb);
1487 BT_ERR("%s: CSR: Local version failed (%d)", hdev->name, err);
1488 return err;
1489 }
1490
1491 if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1492 BT_ERR("%s: CSR: Local version length mismatch", hdev->name);
1493 kfree_skb(skb);
1494 return -EIO;
1495 }
1496
1497 rp = (struct hci_rp_read_local_version *)skb->data;
1498
1499 /* Detect controllers which aren't real CSR ones. */
1500 if (le16_to_cpu(rp->manufacturer) != 10 ||
1501 le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1502 /* Clear the reset quirk since this is not an actual
1503 * early Bluetooth 1.1 device from CSR.
1504 */
1505 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1506
1507 /* These fake CSR controllers have all a broken
1508 * stored link key handling and so just disable it.
1509 */
1510 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1511 }
1512
1513 kfree_skb(skb);
1514
1515 return 0;
1516 }
1517
1518 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1519 struct intel_version *ver)
1520 {
1521 const struct firmware *fw;
1522 char fwname[64];
1523 int ret;
1524
1525 snprintf(fwname, sizeof(fwname),
1526 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1527 ver->hw_platform, ver->hw_variant, ver->hw_revision,
1528 ver->fw_variant, ver->fw_revision, ver->fw_build_num,
1529 ver->fw_build_ww, ver->fw_build_yy);
1530
1531 ret = request_firmware(&fw, fwname, &hdev->dev);
1532 if (ret < 0) {
1533 if (ret == -EINVAL) {
1534 BT_ERR("%s Intel firmware file request failed (%d)",
1535 hdev->name, ret);
1536 return NULL;
1537 }
1538
1539 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1540 hdev->name, fwname, ret);
1541
1542 /* If the correct firmware patch file is not found, use the
1543 * default firmware patch file instead
1544 */
1545 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1546 ver->hw_platform, ver->hw_variant);
1547 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1548 BT_ERR("%s failed to open default Intel fw file: %s",
1549 hdev->name, fwname);
1550 return NULL;
1551 }
1552 }
1553
1554 BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1555
1556 return fw;
1557 }
1558
1559 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1560 const struct firmware *fw,
1561 const u8 **fw_ptr, int *disable_patch)
1562 {
1563 struct sk_buff *skb;
1564 struct hci_command_hdr *cmd;
1565 const u8 *cmd_param;
1566 struct hci_event_hdr *evt = NULL;
1567 const u8 *evt_param = NULL;
1568 int remain = fw->size - (*fw_ptr - fw->data);
1569
1570 /* The first byte indicates the types of the patch command or event.
1571 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1572 * in the current firmware buffer doesn't start with 0x01 or
1573 * the size of remain buffer is smaller than HCI command header,
1574 * the firmware file is corrupted and it should stop the patching
1575 * process.
1576 */
1577 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1578 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1579 return -EINVAL;
1580 }
1581 (*fw_ptr)++;
1582 remain--;
1583
1584 cmd = (struct hci_command_hdr *)(*fw_ptr);
1585 *fw_ptr += sizeof(*cmd);
1586 remain -= sizeof(*cmd);
1587
1588 /* Ensure that the remain firmware data is long enough than the length
1589 * of command parameter. If not, the firmware file is corrupted.
1590 */
1591 if (remain < cmd->plen) {
1592 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1593 return -EFAULT;
1594 }
1595
1596 /* If there is a command that loads a patch in the firmware
1597 * file, then enable the patch upon success, otherwise just
1598 * disable the manufacturer mode, for example patch activation
1599 * is not required when the default firmware patch file is used
1600 * because there are no patch data to load.
1601 */
1602 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1603 *disable_patch = 0;
1604
1605 cmd_param = *fw_ptr;
1606 *fw_ptr += cmd->plen;
1607 remain -= cmd->plen;
1608
1609 /* This reads the expected events when the above command is sent to the
1610 * device. Some vendor commands expects more than one events, for
1611 * example command status event followed by vendor specific event.
1612 * For this case, it only keeps the last expected event. so the command
1613 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1614 * last expected event.
1615 */
1616 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1617 (*fw_ptr)++;
1618 remain--;
1619
1620 evt = (struct hci_event_hdr *)(*fw_ptr);
1621 *fw_ptr += sizeof(*evt);
1622 remain -= sizeof(*evt);
1623
1624 if (remain < evt->plen) {
1625 BT_ERR("%s Intel fw corrupted: invalid evt len",
1626 hdev->name);
1627 return -EFAULT;
1628 }
1629
1630 evt_param = *fw_ptr;
1631 *fw_ptr += evt->plen;
1632 remain -= evt->plen;
1633 }
1634
1635 /* Every HCI commands in the firmware file has its correspond event.
1636 * If event is not found or remain is smaller than zero, the firmware
1637 * file is corrupted.
1638 */
1639 if (!evt || !evt_param || remain < 0) {
1640 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1641 return -EFAULT;
1642 }
1643
1644 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1645 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1646 if (IS_ERR(skb)) {
1647 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1648 hdev->name, cmd->opcode, PTR_ERR(skb));
1649 return PTR_ERR(skb);
1650 }
1651
1652 /* It ensures that the returned event matches the event data read from
1653 * the firmware file. At fist, it checks the length and then
1654 * the contents of the event.
1655 */
1656 if (skb->len != evt->plen) {
1657 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1658 le16_to_cpu(cmd->opcode));
1659 kfree_skb(skb);
1660 return -EFAULT;
1661 }
1662
1663 if (memcmp(skb->data, evt_param, evt->plen)) {
1664 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1665 hdev->name, le16_to_cpu(cmd->opcode));
1666 kfree_skb(skb);
1667 return -EFAULT;
1668 }
1669 kfree_skb(skb);
1670
1671 return 0;
1672 }
1673
1674 static int btusb_setup_intel(struct hci_dev *hdev)
1675 {
1676 struct sk_buff *skb;
1677 const struct firmware *fw;
1678 const u8 *fw_ptr;
1679 int disable_patch, err;
1680 struct intel_version ver;
1681
1682 BT_DBG("%s", hdev->name);
1683
1684 /* The controller has a bug with the first HCI command sent to it
1685 * returning number of completed commands as zero. This would stall the
1686 * command processing in the Bluetooth core.
1687 *
1688 * As a workaround, send HCI Reset command first which will reset the
1689 * number of completed commands and allow normal command processing
1690 * from now on.
1691 */
1692 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1693 if (IS_ERR(skb)) {
1694 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1695 hdev->name, PTR_ERR(skb));
1696 return PTR_ERR(skb);
1697 }
1698 kfree_skb(skb);
1699
1700 /* Read Intel specific controller version first to allow selection of
1701 * which firmware file to load.
1702 *
1703 * The returned information are hardware variant and revision plus
1704 * firmware variant, revision and build number.
1705 */
1706 err = btintel_read_version(hdev, &ver);
1707 if (err)
1708 return err;
1709
1710 BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1711 hdev->name, ver.hw_platform, ver.hw_variant, ver.hw_revision,
1712 ver.fw_variant, ver.fw_revision, ver.fw_build_num,
1713 ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
1714
1715 /* fw_patch_num indicates the version of patch the device currently
1716 * have. If there is no patch data in the device, it is always 0x00.
1717 * So, if it is other than 0x00, no need to patch the device again.
1718 */
1719 if (ver.fw_patch_num) {
1720 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1721 hdev->name, ver.fw_patch_num);
1722 goto complete;
1723 }
1724
1725 /* Opens the firmware patch file based on the firmware version read
1726 * from the controller. If it fails to open the matching firmware
1727 * patch file, it tries to open the default firmware patch file.
1728 * If no patch file is found, allow the device to operate without
1729 * a patch.
1730 */
1731 fw = btusb_setup_intel_get_fw(hdev, &ver);
1732 if (!fw)
1733 goto complete;
1734 fw_ptr = fw->data;
1735
1736 /* Enable the manufacturer mode of the controller.
1737 * Only while this mode is enabled, the driver can download the
1738 * firmware patch data and configuration parameters.
1739 */
1740 err = btintel_enter_mfg(hdev);
1741 if (err) {
1742 release_firmware(fw);
1743 return err;
1744 }
1745
1746 disable_patch = 1;
1747
1748 /* The firmware data file consists of list of Intel specific HCI
1749 * commands and its expected events. The first byte indicates the
1750 * type of the message, either HCI command or HCI event.
1751 *
1752 * It reads the command and its expected event from the firmware file,
1753 * and send to the controller. Once __hci_cmd_sync_ev() returns,
1754 * the returned event is compared with the event read from the firmware
1755 * file and it will continue until all the messages are downloaded to
1756 * the controller.
1757 *
1758 * Once the firmware patching is completed successfully,
1759 * the manufacturer mode is disabled with reset and activating the
1760 * downloaded patch.
1761 *
1762 * If the firmware patching fails, the manufacturer mode is
1763 * disabled with reset and deactivating the patch.
1764 *
1765 * If the default patch file is used, no reset is done when disabling
1766 * the manufacturer.
1767 */
1768 while (fw->size > fw_ptr - fw->data) {
1769 int ret;
1770
1771 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1772 &disable_patch);
1773 if (ret < 0)
1774 goto exit_mfg_deactivate;
1775 }
1776
1777 release_firmware(fw);
1778
1779 if (disable_patch)
1780 goto exit_mfg_disable;
1781
1782 /* Patching completed successfully and disable the manufacturer mode
1783 * with reset and activate the downloaded firmware patches.
1784 */
1785 err = btintel_exit_mfg(hdev, true, true);
1786 if (err)
1787 return err;
1788
1789 BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1790 hdev->name);
1791
1792 goto complete;
1793
1794 exit_mfg_disable:
1795 /* Disable the manufacturer mode without reset */
1796 err = btintel_exit_mfg(hdev, false, false);
1797 if (err)
1798 return err;
1799
1800 BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1801
1802 goto complete;
1803
1804 exit_mfg_deactivate:
1805 release_firmware(fw);
1806
1807 /* Patching failed. Disable the manufacturer mode with reset and
1808 * deactivate the downloaded firmware patches.
1809 */
1810 err = btintel_exit_mfg(hdev, true, false);
1811 if (err)
1812 return err;
1813
1814 BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1815 hdev->name);
1816
1817 complete:
1818 /* Set the event mask for Intel specific vendor events. This enables
1819 * a few extra events that are useful during general operation.
1820 */
1821 btintel_set_event_mask_mfg(hdev, false);
1822
1823 btintel_check_bdaddr(hdev);
1824 return 0;
1825 }
1826
1827 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1828 {
1829 struct sk_buff *skb;
1830 struct hci_event_hdr *hdr;
1831 struct hci_ev_cmd_complete *evt;
1832
1833 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1834 if (!skb)
1835 return -ENOMEM;
1836
1837 hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
1838 hdr->evt = HCI_EV_CMD_COMPLETE;
1839 hdr->plen = sizeof(*evt) + 1;
1840
1841 evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
1842 evt->ncmd = 0x01;
1843 evt->opcode = cpu_to_le16(opcode);
1844
1845 *skb_put(skb, 1) = 0x00;
1846
1847 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
1848
1849 return hci_recv_frame(hdev, skb);
1850 }
1851
1852 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1853 int count)
1854 {
1855 /* When the device is in bootloader mode, then it can send
1856 * events via the bulk endpoint. These events are treated the
1857 * same way as the ones received from the interrupt endpoint.
1858 */
1859 if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1860 return btusb_recv_intr(data, buffer, count);
1861
1862 return btusb_recv_bulk(data, buffer, count);
1863 }
1864
1865 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1866 unsigned int len)
1867 {
1868 const struct intel_bootup *evt = ptr;
1869
1870 if (len != sizeof(*evt))
1871 return;
1872
1873 if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1874 smp_mb__after_atomic();
1875 wake_up_bit(&data->flags, BTUSB_BOOTING);
1876 }
1877 }
1878
1879 static void btusb_intel_secure_send_result(struct btusb_data *data,
1880 const void *ptr, unsigned int len)
1881 {
1882 const struct intel_secure_send_result *evt = ptr;
1883
1884 if (len != sizeof(*evt))
1885 return;
1886
1887 if (evt->result)
1888 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1889
1890 if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1891 test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1892 smp_mb__after_atomic();
1893 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1894 }
1895 }
1896
1897 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1898 {
1899 struct btusb_data *data = hci_get_drvdata(hdev);
1900
1901 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1902 struct hci_event_hdr *hdr = (void *)skb->data;
1903
1904 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1905 hdr->plen > 0) {
1906 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1907 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1908
1909 switch (skb->data[2]) {
1910 case 0x02:
1911 /* When switching to the operational firmware
1912 * the device sends a vendor specific event
1913 * indicating that the bootup completed.
1914 */
1915 btusb_intel_bootup(data, ptr, len);
1916 break;
1917 case 0x06:
1918 /* When the firmware loading completes the
1919 * device sends out a vendor specific event
1920 * indicating the result of the firmware
1921 * loading.
1922 */
1923 btusb_intel_secure_send_result(data, ptr, len);
1924 break;
1925 }
1926 }
1927 }
1928
1929 return hci_recv_frame(hdev, skb);
1930 }
1931
1932 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1933 {
1934 struct btusb_data *data = hci_get_drvdata(hdev);
1935 struct urb *urb;
1936
1937 BT_DBG("%s", hdev->name);
1938
1939 switch (hci_skb_pkt_type(skb)) {
1940 case HCI_COMMAND_PKT:
1941 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1942 struct hci_command_hdr *cmd = (void *)skb->data;
1943 __u16 opcode = le16_to_cpu(cmd->opcode);
1944
1945 /* When in bootloader mode and the command 0xfc09
1946 * is received, it needs to be send down the
1947 * bulk endpoint. So allocate a bulk URB instead.
1948 */
1949 if (opcode == 0xfc09)
1950 urb = alloc_bulk_urb(hdev, skb);
1951 else
1952 urb = alloc_ctrl_urb(hdev, skb);
1953
1954 /* When the 0xfc01 command is issued to boot into
1955 * the operational firmware, it will actually not
1956 * send a command complete event. To keep the flow
1957 * control working inject that event here.
1958 */
1959 if (opcode == 0xfc01)
1960 inject_cmd_complete(hdev, opcode);
1961 } else {
1962 urb = alloc_ctrl_urb(hdev, skb);
1963 }
1964 if (IS_ERR(urb))
1965 return PTR_ERR(urb);
1966
1967 hdev->stat.cmd_tx++;
1968 return submit_or_queue_tx_urb(hdev, urb);
1969
1970 case HCI_ACLDATA_PKT:
1971 urb = alloc_bulk_urb(hdev, skb);
1972 if (IS_ERR(urb))
1973 return PTR_ERR(urb);
1974
1975 hdev->stat.acl_tx++;
1976 return submit_or_queue_tx_urb(hdev, urb);
1977
1978 case HCI_SCODATA_PKT:
1979 if (hci_conn_num(hdev, SCO_LINK) < 1)
1980 return -ENODEV;
1981
1982 urb = alloc_isoc_urb(hdev, skb);
1983 if (IS_ERR(urb))
1984 return PTR_ERR(urb);
1985
1986 hdev->stat.sco_tx++;
1987 return submit_tx_urb(hdev, urb);
1988 }
1989
1990 return -EILSEQ;
1991 }
1992
1993 static int btusb_setup_intel_new(struct hci_dev *hdev)
1994 {
1995 static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
1996 0x00, 0x08, 0x04, 0x00 };
1997 struct btusb_data *data = hci_get_drvdata(hdev);
1998 struct sk_buff *skb;
1999 struct intel_version ver;
2000 struct intel_boot_params *params;
2001 const struct firmware *fw;
2002 const u8 *fw_ptr;
2003 u32 frag_len;
2004 char fwname[64];
2005 ktime_t calltime, delta, rettime;
2006 unsigned long long duration;
2007 int err;
2008
2009 BT_DBG("%s", hdev->name);
2010
2011 calltime = ktime_get();
2012
2013 /* Read the Intel version information to determine if the device
2014 * is in bootloader mode or if it already has operational firmware
2015 * loaded.
2016 */
2017 err = btintel_read_version(hdev, &ver);
2018 if (err)
2019 return err;
2020
2021 /* The hardware platform number has a fixed value of 0x37 and
2022 * for now only accept this single value.
2023 */
2024 if (ver.hw_platform != 0x37) {
2025 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
2026 hdev->name, ver.hw_platform);
2027 return -EINVAL;
2028 }
2029
2030 /* Check for supported iBT hardware variants of this firmware
2031 * loading method.
2032 *
2033 * This check has been put in place to ensure correct forward
2034 * compatibility options when newer hardware variants come along.
2035 */
2036 switch (ver.hw_variant) {
2037 case 0x0b: /* SfP */
2038 case 0x0c: /* WsP */
2039 case 0x12: /* ThP */
2040 break;
2041 default:
2042 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
2043 hdev->name, ver.hw_variant);
2044 return -EINVAL;
2045 }
2046
2047 btintel_version_info(hdev, &ver);
2048
2049 /* The firmware variant determines if the device is in bootloader
2050 * mode or is running operational firmware. The value 0x06 identifies
2051 * the bootloader and the value 0x23 identifies the operational
2052 * firmware.
2053 *
2054 * When the operational firmware is already present, then only
2055 * the check for valid Bluetooth device address is needed. This
2056 * determines if the device will be added as configured or
2057 * unconfigured controller.
2058 *
2059 * It is not possible to use the Secure Boot Parameters in this
2060 * case since that command is only available in bootloader mode.
2061 */
2062 if (ver.fw_variant == 0x23) {
2063 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2064 btintel_check_bdaddr(hdev);
2065 return 0;
2066 }
2067
2068 /* If the device is not in bootloader mode, then the only possible
2069 * choice is to return an error and abort the device initialization.
2070 */
2071 if (ver.fw_variant != 0x06) {
2072 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2073 hdev->name, ver.fw_variant);
2074 return -ENODEV;
2075 }
2076
2077 /* Read the secure boot parameters to identify the operating
2078 * details of the bootloader.
2079 */
2080 skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2081 if (IS_ERR(skb)) {
2082 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2083 hdev->name, PTR_ERR(skb));
2084 return PTR_ERR(skb);
2085 }
2086
2087 if (skb->len != sizeof(*params)) {
2088 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2089 kfree_skb(skb);
2090 return -EILSEQ;
2091 }
2092
2093 params = (struct intel_boot_params *)skb->data;
2094
2095 BT_INFO("%s: Device revision is %u", hdev->name,
2096 le16_to_cpu(params->dev_revid));
2097
2098 BT_INFO("%s: Secure boot is %s", hdev->name,
2099 params->secure_boot ? "enabled" : "disabled");
2100
2101 BT_INFO("%s: OTP lock is %s", hdev->name,
2102 params->otp_lock ? "enabled" : "disabled");
2103
2104 BT_INFO("%s: API lock is %s", hdev->name,
2105 params->api_lock ? "enabled" : "disabled");
2106
2107 BT_INFO("%s: Debug lock is %s", hdev->name,
2108 params->debug_lock ? "enabled" : "disabled");
2109
2110 BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2111 params->min_fw_build_nn, params->min_fw_build_cw,
2112 2000 + params->min_fw_build_yy);
2113
2114 /* It is required that every single firmware fragment is acknowledged
2115 * with a command complete event. If the boot parameters indicate
2116 * that this bootloader does not send them, then abort the setup.
2117 */
2118 if (params->limited_cce != 0x00) {
2119 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2120 hdev->name, params->limited_cce);
2121 kfree_skb(skb);
2122 return -EINVAL;
2123 }
2124
2125 /* If the OTP has no valid Bluetooth device address, then there will
2126 * also be no valid address for the operational firmware.
2127 */
2128 if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2129 BT_INFO("%s: No device address configured", hdev->name);
2130 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2131 }
2132
2133 /* With this Intel bootloader only the hardware variant and device
2134 * revision information are used to select the right firmware.
2135 *
2136 * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2137 *
2138 * Currently the supported hardware variants are:
2139 * 11 (0x0b) for iBT3.0 (LnP/SfP)
2140 * 12 (0x0c) for iBT3.5 (WsP)
2141 */
2142 snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.sfi",
2143 le16_to_cpu(ver.hw_variant),
2144 le16_to_cpu(params->dev_revid));
2145
2146 err = request_firmware(&fw, fwname, &hdev->dev);
2147 if (err < 0) {
2148 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2149 hdev->name, err);
2150 kfree_skb(skb);
2151 return err;
2152 }
2153
2154 BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2155
2156 /* Save the DDC file name for later use to apply once the firmware
2157 * downloading is done.
2158 */
2159 snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.ddc",
2160 le16_to_cpu(ver.hw_variant),
2161 le16_to_cpu(params->dev_revid));
2162
2163 kfree_skb(skb);
2164
2165 if (fw->size < 644) {
2166 BT_ERR("%s: Invalid size of firmware file (%zu)",
2167 hdev->name, fw->size);
2168 err = -EBADF;
2169 goto done;
2170 }
2171
2172 set_bit(BTUSB_DOWNLOADING, &data->flags);
2173
2174 /* Start the firmware download transaction with the Init fragment
2175 * represented by the 128 bytes of CSS header.
2176 */
2177 err = btintel_secure_send(hdev, 0x00, 128, fw->data);
2178 if (err < 0) {
2179 BT_ERR("%s: Failed to send firmware header (%d)",
2180 hdev->name, err);
2181 goto done;
2182 }
2183
2184 /* Send the 256 bytes of public key information from the firmware
2185 * as the PKey fragment.
2186 */
2187 err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128);
2188 if (err < 0) {
2189 BT_ERR("%s: Failed to send firmware public key (%d)",
2190 hdev->name, err);
2191 goto done;
2192 }
2193
2194 /* Send the 256 bytes of signature information from the firmware
2195 * as the Sign fragment.
2196 */
2197 err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388);
2198 if (err < 0) {
2199 BT_ERR("%s: Failed to send firmware signature (%d)",
2200 hdev->name, err);
2201 goto done;
2202 }
2203
2204 fw_ptr = fw->data + 644;
2205 frag_len = 0;
2206
2207 while (fw_ptr - fw->data < fw->size) {
2208 struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
2209
2210 frag_len += sizeof(*cmd) + cmd->plen;
2211
2212 /* The parameter length of the secure send command requires
2213 * a 4 byte alignment. It happens so that the firmware file
2214 * contains proper Intel_NOP commands to align the fragments
2215 * as needed.
2216 *
2217 * Send set of commands with 4 byte alignment from the
2218 * firmware data buffer as a single Data fragement.
2219 */
2220 if (!(frag_len % 4)) {
2221 err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr);
2222 if (err < 0) {
2223 BT_ERR("%s: Failed to send firmware data (%d)",
2224 hdev->name, err);
2225 goto done;
2226 }
2227
2228 fw_ptr += frag_len;
2229 frag_len = 0;
2230 }
2231 }
2232
2233 set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2234
2235 BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2236
2237 /* Before switching the device into operational mode and with that
2238 * booting the loaded firmware, wait for the bootloader notification
2239 * that all fragments have been successfully received.
2240 *
2241 * When the event processing receives the notification, then the
2242 * BTUSB_DOWNLOADING flag will be cleared.
2243 *
2244 * The firmware loading should not take longer than 5 seconds
2245 * and thus just timeout if that happens and fail the setup
2246 * of this device.
2247 */
2248 err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2249 TASK_INTERRUPTIBLE,
2250 msecs_to_jiffies(5000));
2251 if (err == -EINTR) {
2252 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2253 goto done;
2254 }
2255
2256 if (err) {
2257 BT_ERR("%s: Firmware loading timeout", hdev->name);
2258 err = -ETIMEDOUT;
2259 goto done;
2260 }
2261
2262 if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2263 BT_ERR("%s: Firmware loading failed", hdev->name);
2264 err = -ENOEXEC;
2265 goto done;
2266 }
2267
2268 rettime = ktime_get();
2269 delta = ktime_sub(rettime, calltime);
2270 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2271
2272 BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2273
2274 done:
2275 release_firmware(fw);
2276
2277 if (err < 0)
2278 return err;
2279
2280 calltime = ktime_get();
2281
2282 set_bit(BTUSB_BOOTING, &data->flags);
2283
2284 skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2285 HCI_INIT_TIMEOUT);
2286 if (IS_ERR(skb))
2287 return PTR_ERR(skb);
2288
2289 kfree_skb(skb);
2290
2291 /* The bootloader will not indicate when the device is ready. This
2292 * is done by the operational firmware sending bootup notification.
2293 *
2294 * Booting into operational firmware should not take longer than
2295 * 1 second. However if that happens, then just fail the setup
2296 * since something went wrong.
2297 */
2298 BT_INFO("%s: Waiting for device to boot", hdev->name);
2299
2300 err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2301 TASK_INTERRUPTIBLE,
2302 msecs_to_jiffies(1000));
2303
2304 if (err == -EINTR) {
2305 BT_ERR("%s: Device boot interrupted", hdev->name);
2306 return -EINTR;
2307 }
2308
2309 if (err) {
2310 BT_ERR("%s: Device boot timeout", hdev->name);
2311 return -ETIMEDOUT;
2312 }
2313
2314 rettime = ktime_get();
2315 delta = ktime_sub(rettime, calltime);
2316 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2317
2318 BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2319
2320 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2321
2322 /* Once the device is running in operational mode, it needs to apply
2323 * the device configuration (DDC) parameters.
2324 *
2325 * The device can work without DDC parameters, so even if it fails
2326 * to load the file, no need to fail the setup.
2327 */
2328 btintel_load_ddc_config(hdev, fwname);
2329
2330 /* Set the event mask for Intel specific vendor events. This enables
2331 * a few extra events that are useful during general operation. It
2332 * does not enable any debugging related events.
2333 *
2334 * The device will function correctly without these events enabled
2335 * and thus no need to fail the setup.
2336 */
2337 btintel_set_event_mask(hdev, false);
2338
2339 return 0;
2340 }
2341
2342 static int btusb_shutdown_intel(struct hci_dev *hdev)
2343 {
2344 struct sk_buff *skb;
2345 long ret;
2346
2347 /* Some platforms have an issue with BT LED when the interface is
2348 * down or BT radio is turned off, which takes 5 seconds to BT LED
2349 * goes off. This command turns off the BT LED immediately.
2350 */
2351 skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2352 if (IS_ERR(skb)) {
2353 ret = PTR_ERR(skb);
2354 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2355 hdev->name, ret);
2356 return ret;
2357 }
2358 kfree_skb(skb);
2359
2360 return 0;
2361 }
2362
2363 #ifdef CONFIG_PM
2364 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
2365 static int marvell_config_oob_wake(struct hci_dev *hdev)
2366 {
2367 struct sk_buff *skb;
2368 struct btusb_data *data = hci_get_drvdata(hdev);
2369 struct device *dev = &data->udev->dev;
2370 u16 pin, gap, opcode;
2371 int ret;
2372 u8 cmd[5];
2373
2374 /* Move on if no wakeup pin specified */
2375 if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
2376 of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
2377 return 0;
2378
2379 /* Vendor specific command to configure a GPIO as wake-up pin */
2380 opcode = hci_opcode_pack(0x3F, 0x59);
2381 cmd[0] = opcode & 0xFF;
2382 cmd[1] = opcode >> 8;
2383 cmd[2] = 2; /* length of parameters that follow */
2384 cmd[3] = pin;
2385 cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
2386
2387 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
2388 if (!skb) {
2389 bt_dev_err(hdev, "%s: No memory\n", __func__);
2390 return -ENOMEM;
2391 }
2392
2393 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
2394 hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
2395
2396 ret = btusb_send_frame(hdev, skb);
2397 if (ret) {
2398 bt_dev_err(hdev, "%s: configuration failed\n", __func__);
2399 kfree_skb(skb);
2400 return ret;
2401 }
2402
2403 return 0;
2404 }
2405 #endif
2406
2407 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2408 const bdaddr_t *bdaddr)
2409 {
2410 struct sk_buff *skb;
2411 u8 buf[8];
2412 long ret;
2413
2414 buf[0] = 0xfe;
2415 buf[1] = sizeof(bdaddr_t);
2416 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2417
2418 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2419 if (IS_ERR(skb)) {
2420 ret = PTR_ERR(skb);
2421 BT_ERR("%s: changing Marvell device address failed (%ld)",
2422 hdev->name, ret);
2423 return ret;
2424 }
2425 kfree_skb(skb);
2426
2427 return 0;
2428 }
2429
2430 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2431 const bdaddr_t *bdaddr)
2432 {
2433 struct sk_buff *skb;
2434 u8 buf[10];
2435 long ret;
2436
2437 buf[0] = 0x01;
2438 buf[1] = 0x01;
2439 buf[2] = 0x00;
2440 buf[3] = sizeof(bdaddr_t);
2441 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2442
2443 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2444 if (IS_ERR(skb)) {
2445 ret = PTR_ERR(skb);
2446 BT_ERR("%s: Change address command failed (%ld)",
2447 hdev->name, ret);
2448 return ret;
2449 }
2450 kfree_skb(skb);
2451
2452 return 0;
2453 }
2454
2455 #define QCA_DFU_PACKET_LEN 4096
2456
2457 #define QCA_GET_TARGET_VERSION 0x09
2458 #define QCA_CHECK_STATUS 0x05
2459 #define QCA_DFU_DOWNLOAD 0x01
2460
2461 #define QCA_SYSCFG_UPDATED 0x40
2462 #define QCA_PATCH_UPDATED 0x80
2463 #define QCA_DFU_TIMEOUT 3000
2464
2465 struct qca_version {
2466 __le32 rom_version;
2467 __le32 patch_version;
2468 __le32 ram_version;
2469 __le32 ref_clock;
2470 __u8 reserved[4];
2471 } __packed;
2472
2473 struct qca_rampatch_version {
2474 __le16 rom_version;
2475 __le16 patch_version;
2476 } __packed;
2477
2478 struct qca_device_info {
2479 u32 rom_version;
2480 u8 rampatch_hdr; /* length of header in rampatch */
2481 u8 nvm_hdr; /* length of header in NVM */
2482 u8 ver_offset; /* offset of version structure in rampatch */
2483 };
2484
2485 static const struct qca_device_info qca_devices_table[] = {
2486 { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2487 { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2488 { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2489 { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2490 { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2491 { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2492 };
2493
2494 static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request,
2495 void *data, u16 size)
2496 {
2497 struct btusb_data *btdata = hci_get_drvdata(hdev);
2498 struct usb_device *udev = btdata->udev;
2499 int pipe, err;
2500 u8 *buf;
2501
2502 buf = kmalloc(size, GFP_KERNEL);
2503 if (!buf)
2504 return -ENOMEM;
2505
2506 /* Found some of USB hosts have IOT issues with ours so that we should
2507 * not wait until HCI layer is ready.
2508 */
2509 pipe = usb_rcvctrlpipe(udev, 0);
2510 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2511 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2512 if (err < 0) {
2513 BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err);
2514 goto done;
2515 }
2516
2517 memcpy(data, buf, size);
2518
2519 done:
2520 kfree(buf);
2521
2522 return err;
2523 }
2524
2525 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2526 const struct firmware *firmware,
2527 size_t hdr_size)
2528 {
2529 struct btusb_data *btdata = hci_get_drvdata(hdev);
2530 struct usb_device *udev = btdata->udev;
2531 size_t count, size, sent = 0;
2532 int pipe, len, err;
2533 u8 *buf;
2534
2535 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2536 if (!buf)
2537 return -ENOMEM;
2538
2539 count = firmware->size;
2540
2541 size = min_t(size_t, count, hdr_size);
2542 memcpy(buf, firmware->data, size);
2543
2544 /* USB patches should go down to controller through USB path
2545 * because binary format fits to go down through USB channel.
2546 * USB control path is for patching headers and USB bulk is for
2547 * patch body.
2548 */
2549 pipe = usb_sndctrlpipe(udev, 0);
2550 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2551 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2552 if (err < 0) {
2553 BT_ERR("%s: Failed to send headers (%d)", hdev->name, err);
2554 goto done;
2555 }
2556
2557 sent += size;
2558 count -= size;
2559
2560 while (count) {
2561 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2562
2563 memcpy(buf, firmware->data + sent, size);
2564
2565 pipe = usb_sndbulkpipe(udev, 0x02);
2566 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2567 QCA_DFU_TIMEOUT);
2568 if (err < 0) {
2569 BT_ERR("%s: Failed to send body at %zd of %zd (%d)",
2570 hdev->name, sent, firmware->size, err);
2571 break;
2572 }
2573
2574 if (size != len) {
2575 BT_ERR("%s: Failed to get bulk buffer", hdev->name);
2576 err = -EILSEQ;
2577 break;
2578 }
2579
2580 sent += size;
2581 count -= size;
2582 }
2583
2584 done:
2585 kfree(buf);
2586 return err;
2587 }
2588
2589 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2590 struct qca_version *ver,
2591 const struct qca_device_info *info)
2592 {
2593 struct qca_rampatch_version *rver;
2594 const struct firmware *fw;
2595 u32 ver_rom, ver_patch;
2596 u16 rver_rom, rver_patch;
2597 char fwname[64];
2598 int err;
2599
2600 ver_rom = le32_to_cpu(ver->rom_version);
2601 ver_patch = le32_to_cpu(ver->patch_version);
2602
2603 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2604
2605 err = request_firmware(&fw, fwname, &hdev->dev);
2606 if (err) {
2607 BT_ERR("%s: failed to request rampatch file: %s (%d)",
2608 hdev->name, fwname, err);
2609 return err;
2610 }
2611
2612 BT_INFO("%s: using rampatch file: %s", hdev->name, fwname);
2613
2614 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2615 rver_rom = le16_to_cpu(rver->rom_version);
2616 rver_patch = le16_to_cpu(rver->patch_version);
2617
2618 BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x "
2619 "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom,
2620 ver_patch);
2621
2622 if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2623 BT_ERR("%s: rampatch file version did not match with firmware",
2624 hdev->name);
2625 err = -EINVAL;
2626 goto done;
2627 }
2628
2629 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2630
2631 done:
2632 release_firmware(fw);
2633
2634 return err;
2635 }
2636
2637 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2638 struct qca_version *ver,
2639 const struct qca_device_info *info)
2640 {
2641 const struct firmware *fw;
2642 char fwname[64];
2643 int err;
2644
2645 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2646 le32_to_cpu(ver->rom_version));
2647
2648 err = request_firmware(&fw, fwname, &hdev->dev);
2649 if (err) {
2650 BT_ERR("%s: failed to request NVM file: %s (%d)",
2651 hdev->name, fwname, err);
2652 return err;
2653 }
2654
2655 BT_INFO("%s: using NVM file: %s", hdev->name, fwname);
2656
2657 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2658
2659 release_firmware(fw);
2660
2661 return err;
2662 }
2663
2664 static int btusb_setup_qca(struct hci_dev *hdev)
2665 {
2666 const struct qca_device_info *info = NULL;
2667 struct qca_version ver;
2668 u32 ver_rom;
2669 u8 status;
2670 int i, err;
2671
2672 err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver,
2673 sizeof(ver));
2674 if (err < 0)
2675 return err;
2676
2677 ver_rom = le32_to_cpu(ver.rom_version);
2678 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2679 if (ver_rom == qca_devices_table[i].rom_version)
2680 info = &qca_devices_table[i];
2681 }
2682 if (!info) {
2683 BT_ERR("%s: don't support firmware rome 0x%x", hdev->name,
2684 ver_rom);
2685 return -ENODEV;
2686 }
2687
2688 err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status,
2689 sizeof(status));
2690 if (err < 0)
2691 return err;
2692
2693 if (!(status & QCA_PATCH_UPDATED)) {
2694 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2695 if (err < 0)
2696 return err;
2697 }
2698
2699 if (!(status & QCA_SYSCFG_UPDATED)) {
2700 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2701 if (err < 0)
2702 return err;
2703 }
2704
2705 return 0;
2706 }
2707
2708 #ifdef CONFIG_BT_HCIBTUSB_BCM
2709 static inline int __set_diag_interface(struct hci_dev *hdev)
2710 {
2711 struct btusb_data *data = hci_get_drvdata(hdev);
2712 struct usb_interface *intf = data->diag;
2713 int i;
2714
2715 if (!data->diag)
2716 return -ENODEV;
2717
2718 data->diag_tx_ep = NULL;
2719 data->diag_rx_ep = NULL;
2720
2721 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2722 struct usb_endpoint_descriptor *ep_desc;
2723
2724 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2725
2726 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2727 data->diag_tx_ep = ep_desc;
2728 continue;
2729 }
2730
2731 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2732 data->diag_rx_ep = ep_desc;
2733 continue;
2734 }
2735 }
2736
2737 if (!data->diag_tx_ep || !data->diag_rx_ep) {
2738 BT_ERR("%s invalid diagnostic descriptors", hdev->name);
2739 return -ENODEV;
2740 }
2741
2742 return 0;
2743 }
2744
2745 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
2746 {
2747 struct btusb_data *data = hci_get_drvdata(hdev);
2748 struct sk_buff *skb;
2749 struct urb *urb;
2750 unsigned int pipe;
2751
2752 if (!data->diag_tx_ep)
2753 return ERR_PTR(-ENODEV);
2754
2755 urb = usb_alloc_urb(0, GFP_KERNEL);
2756 if (!urb)
2757 return ERR_PTR(-ENOMEM);
2758
2759 skb = bt_skb_alloc(2, GFP_KERNEL);
2760 if (!skb) {
2761 usb_free_urb(urb);
2762 return ERR_PTR(-ENOMEM);
2763 }
2764
2765 *skb_put(skb, 1) = 0xf0;
2766 *skb_put(skb, 1) = enable;
2767
2768 pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
2769
2770 usb_fill_bulk_urb(urb, data->udev, pipe,
2771 skb->data, skb->len, btusb_tx_complete, skb);
2772
2773 skb->dev = (void *)hdev;
2774
2775 return urb;
2776 }
2777
2778 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
2779 {
2780 struct btusb_data *data = hci_get_drvdata(hdev);
2781 struct urb *urb;
2782
2783 if (!data->diag)
2784 return -ENODEV;
2785
2786 if (!test_bit(HCI_RUNNING, &hdev->flags))
2787 return -ENETDOWN;
2788
2789 urb = alloc_diag_urb(hdev, enable);
2790 if (IS_ERR(urb))
2791 return PTR_ERR(urb);
2792
2793 return submit_or_queue_tx_urb(hdev, urb);
2794 }
2795 #endif
2796
2797 #ifdef CONFIG_PM
2798 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
2799 {
2800 struct btusb_data *data = priv;
2801
2802 pm_wakeup_event(&data->udev->dev, 0);
2803 pm_system_wakeup();
2804
2805 /* Disable only if not already disabled (keep it balanced) */
2806 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
2807 disable_irq_nosync(irq);
2808 disable_irq_wake(irq);
2809 }
2810 return IRQ_HANDLED;
2811 }
2812
2813 static const struct of_device_id btusb_match_table[] = {
2814 { .compatible = "usb1286,204e" },
2815 { }
2816 };
2817 MODULE_DEVICE_TABLE(of, btusb_match_table);
2818
2819 /* Use an oob wakeup pin? */
2820 static int btusb_config_oob_wake(struct hci_dev *hdev)
2821 {
2822 struct btusb_data *data = hci_get_drvdata(hdev);
2823 struct device *dev = &data->udev->dev;
2824 int irq, ret;
2825
2826 clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
2827
2828 if (!of_match_device(btusb_match_table, dev))
2829 return 0;
2830
2831 /* Move on if no IRQ specified */
2832 irq = of_irq_get_byname(dev->of_node, "wakeup");
2833 if (irq <= 0) {
2834 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
2835 return 0;
2836 }
2837
2838 ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
2839 0, "OOB Wake-on-BT", data);
2840 if (ret) {
2841 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
2842 return ret;
2843 }
2844
2845 ret = device_init_wakeup(dev, true);
2846 if (ret) {
2847 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
2848 return ret;
2849 }
2850
2851 data->oob_wake_irq = irq;
2852 disable_irq(irq);
2853 bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
2854 return 0;
2855 }
2856 #endif
2857
2858 static int btusb_probe(struct usb_interface *intf,
2859 const struct usb_device_id *id)
2860 {
2861 struct usb_endpoint_descriptor *ep_desc;
2862 struct btusb_data *data;
2863 struct hci_dev *hdev;
2864 unsigned ifnum_base;
2865 int i, err;
2866
2867 BT_DBG("intf %p id %p", intf, id);
2868
2869 /* interface numbers are hardcoded in the spec */
2870 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
2871 if (!(id->driver_info & BTUSB_IFNUM_2))
2872 return -ENODEV;
2873 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
2874 return -ENODEV;
2875 }
2876
2877 ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
2878
2879 if (!id->driver_info) {
2880 const struct usb_device_id *match;
2881
2882 match = usb_match_id(intf, blacklist_table);
2883 if (match)
2884 id = match;
2885 }
2886
2887 if (id->driver_info == BTUSB_IGNORE)
2888 return -ENODEV;
2889
2890 if (id->driver_info & BTUSB_ATH3012) {
2891 struct usb_device *udev = interface_to_usbdev(intf);
2892
2893 /* Old firmware would otherwise let ath3k driver load
2894 * patch and sysconfig files */
2895 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2896 return -ENODEV;
2897 }
2898
2899 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2900 if (!data)
2901 return -ENOMEM;
2902
2903 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2904 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2905
2906 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2907 data->intr_ep = ep_desc;
2908 continue;
2909 }
2910
2911 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2912 data->bulk_tx_ep = ep_desc;
2913 continue;
2914 }
2915
2916 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2917 data->bulk_rx_ep = ep_desc;
2918 continue;
2919 }
2920 }
2921
2922 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2923 return -ENODEV;
2924
2925 if (id->driver_info & BTUSB_AMP) {
2926 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2927 data->cmdreq = 0x2b;
2928 } else {
2929 data->cmdreq_type = USB_TYPE_CLASS;
2930 data->cmdreq = 0x00;
2931 }
2932
2933 data->udev = interface_to_usbdev(intf);
2934 data->intf = intf;
2935
2936 INIT_WORK(&data->work, btusb_work);
2937 INIT_WORK(&data->waker, btusb_waker);
2938 init_usb_anchor(&data->deferred);
2939 init_usb_anchor(&data->tx_anchor);
2940 spin_lock_init(&data->txlock);
2941
2942 init_usb_anchor(&data->intr_anchor);
2943 init_usb_anchor(&data->bulk_anchor);
2944 init_usb_anchor(&data->isoc_anchor);
2945 init_usb_anchor(&data->diag_anchor);
2946 spin_lock_init(&data->rxlock);
2947
2948 if (id->driver_info & BTUSB_INTEL_NEW) {
2949 data->recv_event = btusb_recv_event_intel;
2950 data->recv_bulk = btusb_recv_bulk_intel;
2951 set_bit(BTUSB_BOOTLOADER, &data->flags);
2952 } else {
2953 data->recv_event = hci_recv_frame;
2954 data->recv_bulk = btusb_recv_bulk;
2955 }
2956
2957 hdev = hci_alloc_dev();
2958 if (!hdev)
2959 return -ENOMEM;
2960
2961 hdev->bus = HCI_USB;
2962 hci_set_drvdata(hdev, data);
2963
2964 if (id->driver_info & BTUSB_AMP)
2965 hdev->dev_type = HCI_AMP;
2966 else
2967 hdev->dev_type = HCI_PRIMARY;
2968
2969 data->hdev = hdev;
2970
2971 SET_HCIDEV_DEV(hdev, &intf->dev);
2972
2973 hdev->open = btusb_open;
2974 hdev->close = btusb_close;
2975 hdev->flush = btusb_flush;
2976 hdev->send = btusb_send_frame;
2977 hdev->notify = btusb_notify;
2978
2979 #ifdef CONFIG_PM
2980 err = btusb_config_oob_wake(hdev);
2981 if (err)
2982 goto out_free_dev;
2983
2984 /* Marvell devices may need a specific chip configuration */
2985 if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
2986 err = marvell_config_oob_wake(hdev);
2987 if (err)
2988 goto out_free_dev;
2989 }
2990 #endif
2991 if (id->driver_info & BTUSB_CW6622)
2992 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2993
2994 if (id->driver_info & BTUSB_BCM2045)
2995 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2996
2997 if (id->driver_info & BTUSB_BCM92035)
2998 hdev->setup = btusb_setup_bcm92035;
2999
3000 #ifdef CONFIG_BT_HCIBTUSB_BCM
3001 if (id->driver_info & BTUSB_BCM_PATCHRAM) {
3002 hdev->manufacturer = 15;
3003 hdev->setup = btbcm_setup_patchram;
3004 hdev->set_diag = btusb_bcm_set_diag;
3005 hdev->set_bdaddr = btbcm_set_bdaddr;
3006
3007 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3008 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3009 }
3010
3011 if (id->driver_info & BTUSB_BCM_APPLE) {
3012 hdev->manufacturer = 15;
3013 hdev->setup = btbcm_setup_apple;
3014 hdev->set_diag = btusb_bcm_set_diag;
3015
3016 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3017 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3018 }
3019 #endif
3020
3021 if (id->driver_info & BTUSB_INTEL) {
3022 hdev->manufacturer = 2;
3023 hdev->setup = btusb_setup_intel;
3024 hdev->shutdown = btusb_shutdown_intel;
3025 hdev->set_diag = btintel_set_diag_mfg;
3026 hdev->set_bdaddr = btintel_set_bdaddr;
3027 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3028 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3029 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3030 }
3031
3032 if (id->driver_info & BTUSB_INTEL_NEW) {
3033 hdev->manufacturer = 2;
3034 hdev->send = btusb_send_frame_intel;
3035 hdev->setup = btusb_setup_intel_new;
3036 hdev->hw_error = btintel_hw_error;
3037 hdev->set_diag = btintel_set_diag;
3038 hdev->set_bdaddr = btintel_set_bdaddr;
3039 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3040 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3041 }
3042
3043 if (id->driver_info & BTUSB_MARVELL)
3044 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3045
3046 if (id->driver_info & BTUSB_SWAVE) {
3047 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3048 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3049 }
3050
3051 if (id->driver_info & BTUSB_INTEL_BOOT) {
3052 hdev->manufacturer = 2;
3053 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3054 }
3055
3056 if (id->driver_info & BTUSB_ATH3012) {
3057 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3058 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3059 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3060 }
3061
3062 if (id->driver_info & BTUSB_QCA_ROME) {
3063 data->setup_on_usb = btusb_setup_qca;
3064 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3065 }
3066
3067 #ifdef CONFIG_BT_HCIBTUSB_RTL
3068 if (id->driver_info & BTUSB_REALTEK) {
3069 hdev->setup = btrtl_setup_realtek;
3070
3071 /* Realtek devices lose their updated firmware over suspend,
3072 * but the USB hub doesn't notice any status change.
3073 * Explicitly request a device reset on resume.
3074 */
3075 set_bit(BTUSB_RESET_RESUME, &data->flags);
3076 }
3077 #endif
3078
3079 if (id->driver_info & BTUSB_AMP) {
3080 /* AMP controllers do not support SCO packets */
3081 data->isoc = NULL;
3082 } else {
3083 /* Interface orders are hardcoded in the specification */
3084 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
3085 }
3086
3087 if (!reset)
3088 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3089
3090 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3091 if (!disable_scofix)
3092 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3093 }
3094
3095 if (id->driver_info & BTUSB_BROKEN_ISOC)
3096 data->isoc = NULL;
3097
3098 if (id->driver_info & BTUSB_DIGIANSWER) {
3099 data->cmdreq_type = USB_TYPE_VENDOR;
3100 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3101 }
3102
3103 if (id->driver_info & BTUSB_CSR) {
3104 struct usb_device *udev = data->udev;
3105 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3106
3107 /* Old firmware would otherwise execute USB reset */
3108 if (bcdDevice < 0x117)
3109 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3110
3111 /* Fake CSR devices with broken commands */
3112 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3113 hdev->setup = btusb_setup_csr;
3114
3115 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3116 }
3117
3118 if (id->driver_info & BTUSB_SNIFFER) {
3119 struct usb_device *udev = data->udev;
3120
3121 /* New sniffer firmware has crippled HCI interface */
3122 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3123 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3124 }
3125
3126 if (id->driver_info & BTUSB_INTEL_BOOT) {
3127 /* A bug in the bootloader causes that interrupt interface is
3128 * only enabled after receiving SetInterface(0, AltSetting=0).
3129 */
3130 err = usb_set_interface(data->udev, 0, 0);
3131 if (err < 0) {
3132 BT_ERR("failed to set interface 0, alt 0 %d", err);
3133 goto out_free_dev;
3134 }
3135 }
3136
3137 if (data->isoc) {
3138 err = usb_driver_claim_interface(&btusb_driver,
3139 data->isoc, data);
3140 if (err < 0)
3141 goto out_free_dev;
3142 }
3143
3144 #ifdef CONFIG_BT_HCIBTUSB_BCM
3145 if (data->diag) {
3146 if (!usb_driver_claim_interface(&btusb_driver,
3147 data->diag, data))
3148 __set_diag_interface(hdev);
3149 else
3150 data->diag = NULL;
3151 }
3152 #endif
3153
3154 err = hci_register_dev(hdev);
3155 if (err < 0)
3156 goto out_free_dev;
3157
3158 usb_set_intfdata(intf, data);
3159
3160 return 0;
3161
3162 out_free_dev:
3163 hci_free_dev(hdev);
3164 return err;
3165 }
3166
3167 static void btusb_disconnect(struct usb_interface *intf)
3168 {
3169 struct btusb_data *data = usb_get_intfdata(intf);
3170 struct hci_dev *hdev;
3171
3172 BT_DBG("intf %p", intf);
3173
3174 if (!data)
3175 return;
3176
3177 hdev = data->hdev;
3178 usb_set_intfdata(data->intf, NULL);
3179
3180 if (data->isoc)
3181 usb_set_intfdata(data->isoc, NULL);
3182
3183 if (data->diag)
3184 usb_set_intfdata(data->diag, NULL);
3185
3186 hci_unregister_dev(hdev);
3187
3188 if (intf == data->intf) {
3189 if (data->isoc)
3190 usb_driver_release_interface(&btusb_driver, data->isoc);
3191 if (data->diag)
3192 usb_driver_release_interface(&btusb_driver, data->diag);
3193 } else if (intf == data->isoc) {
3194 if (data->diag)
3195 usb_driver_release_interface(&btusb_driver, data->diag);
3196 usb_driver_release_interface(&btusb_driver, data->intf);
3197 } else if (intf == data->diag) {
3198 usb_driver_release_interface(&btusb_driver, data->intf);
3199 if (data->isoc)
3200 usb_driver_release_interface(&btusb_driver, data->isoc);
3201 }
3202
3203 if (data->oob_wake_irq)
3204 device_init_wakeup(&data->udev->dev, false);
3205
3206 hci_free_dev(hdev);
3207 }
3208
3209 #ifdef CONFIG_PM
3210 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3211 {
3212 struct btusb_data *data = usb_get_intfdata(intf);
3213
3214 BT_DBG("intf %p", intf);
3215
3216 if (data->suspend_count++)
3217 return 0;
3218
3219 spin_lock_irq(&data->txlock);
3220 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3221 set_bit(BTUSB_SUSPENDING, &data->flags);
3222 spin_unlock_irq(&data->txlock);
3223 } else {
3224 spin_unlock_irq(&data->txlock);
3225 data->suspend_count--;
3226 return -EBUSY;
3227 }
3228
3229 cancel_work_sync(&data->work);
3230
3231 btusb_stop_traffic(data);
3232 usb_kill_anchored_urbs(&data->tx_anchor);
3233
3234 if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
3235 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3236 enable_irq_wake(data->oob_wake_irq);
3237 enable_irq(data->oob_wake_irq);
3238 }
3239
3240 /* Optionally request a device reset on resume, but only when
3241 * wakeups are disabled. If wakeups are enabled we assume the
3242 * device will stay powered up throughout suspend.
3243 */
3244 if (test_bit(BTUSB_RESET_RESUME, &data->flags) &&
3245 !device_may_wakeup(&data->udev->dev))
3246 data->udev->reset_resume = 1;
3247
3248 return 0;
3249 }
3250
3251 static void play_deferred(struct btusb_data *data)
3252 {
3253 struct urb *urb;
3254 int err;
3255
3256 while ((urb = usb_get_from_anchor(&data->deferred))) {
3257 err = usb_submit_urb(urb, GFP_ATOMIC);
3258 if (err < 0)
3259 break;
3260
3261 data->tx_in_flight++;
3262 }
3263 usb_scuttle_anchored_urbs(&data->deferred);
3264 }
3265
3266 static int btusb_resume(struct usb_interface *intf)
3267 {
3268 struct btusb_data *data = usb_get_intfdata(intf);
3269 struct hci_dev *hdev = data->hdev;
3270 int err = 0;
3271
3272 BT_DBG("intf %p", intf);
3273
3274 if (--data->suspend_count)
3275 return 0;
3276
3277 /* Disable only if not already disabled (keep it balanced) */
3278 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3279 disable_irq(data->oob_wake_irq);
3280 disable_irq_wake(data->oob_wake_irq);
3281 }
3282
3283 if (!test_bit(HCI_RUNNING, &hdev->flags))
3284 goto done;
3285
3286 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3287 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3288 if (err < 0) {
3289 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3290 goto failed;
3291 }
3292 }
3293
3294 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3295 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3296 if (err < 0) {
3297 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3298 goto failed;
3299 }
3300
3301 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3302 }
3303
3304 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3305 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3306 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3307 else
3308 btusb_submit_isoc_urb(hdev, GFP_NOIO);
3309 }
3310
3311 spin_lock_irq(&data->txlock);
3312 play_deferred(data);
3313 clear_bit(BTUSB_SUSPENDING, &data->flags);
3314 spin_unlock_irq(&data->txlock);
3315 schedule_work(&data->work);
3316
3317 return 0;
3318
3319 failed:
3320 usb_scuttle_anchored_urbs(&data->deferred);
3321 done:
3322 spin_lock_irq(&data->txlock);
3323 clear_bit(BTUSB_SUSPENDING, &data->flags);
3324 spin_unlock_irq(&data->txlock);
3325
3326 return err;
3327 }
3328 #endif
3329
3330 static struct usb_driver btusb_driver = {
3331 .name = "btusb",
3332 .probe = btusb_probe,
3333 .disconnect = btusb_disconnect,
3334 #ifdef CONFIG_PM
3335 .suspend = btusb_suspend,
3336 .resume = btusb_resume,
3337 #endif
3338 .id_table = btusb_table,
3339 .supports_autosuspend = 1,
3340 .disable_hub_initiated_lpm = 1,
3341 };
3342
3343 module_usb_driver(btusb_driver);
3344
3345 module_param(disable_scofix, bool, 0644);
3346 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3347
3348 module_param(force_scofix, bool, 0644);
3349 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3350
3351 module_param(reset, bool, 0644);
3352 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3353
3354 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3355 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3356 MODULE_VERSION(VERSION);
3357 MODULE_LICENSE("GPL");
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