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/dmi.h>
25 #include <linux/module.h>
26 #include <linux/usb.h>
27 #include <linux/usb/quirks.h>
28 #include <linux/firmware.h>
29 #include <linux/of_device.h>
30 #include <linux/of_irq.h>
31 #include <linux/suspend.h>
32 #include <asm/unaligned.h>
33
34 #include <net/bluetooth/bluetooth.h>
35 #include <net/bluetooth/hci_core.h>
36
37 #include "btintel.h"
38 #include "btbcm.h"
39 #include "btrtl.h"
40
41 #define VERSION "0.8"
42
43 static bool disable_scofix;
44 static bool force_scofix;
45 static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND);
46
47 static bool reset = true;
48
49 static struct usb_driver btusb_driver;
50
51 #define BTUSB_IGNORE 0x01
52 #define BTUSB_DIGIANSWER 0x02
53 #define BTUSB_CSR 0x04
54 #define BTUSB_SNIFFER 0x08
55 #define BTUSB_BCM92035 0x10
56 #define BTUSB_BROKEN_ISOC 0x20
57 #define BTUSB_WRONG_SCO_MTU 0x40
58 #define BTUSB_ATH3012 0x80
59 #define BTUSB_INTEL 0x100
60 #define BTUSB_INTEL_BOOT 0x200
61 #define BTUSB_BCM_PATCHRAM 0x400
62 #define BTUSB_MARVELL 0x800
63 #define BTUSB_SWAVE 0x1000
64 #define BTUSB_INTEL_NEW 0x2000
65 #define BTUSB_AMP 0x4000
66 #define BTUSB_QCA_ROME 0x8000
67 #define BTUSB_BCM_APPLE 0x10000
68 #define BTUSB_REALTEK 0x20000
69 #define BTUSB_BCM2045 0x40000
70 #define BTUSB_IFNUM_2 0x80000
71 #define BTUSB_CW6622 0x100000
72
73 static const struct usb_device_id btusb_table[] = {
74 /* Generic Bluetooth USB device */
75 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
76
77 /* Generic Bluetooth AMP device */
78 { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
79
80 /* Generic Bluetooth USB interface */
81 { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
82
83 /* Apple-specific (Broadcom) devices */
84 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
85 .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
86
87 /* MediaTek MT76x0E */
88 { USB_DEVICE(0x0e8d, 0x763f) },
89
90 /* Broadcom SoftSailing reporting vendor specific */
91 { USB_DEVICE(0x0a5c, 0x21e1) },
92
93 /* Apple MacBookPro 7,1 */
94 { USB_DEVICE(0x05ac, 0x8213) },
95
96 /* Apple iMac11,1 */
97 { USB_DEVICE(0x05ac, 0x8215) },
98
99 /* Apple MacBookPro6,2 */
100 { USB_DEVICE(0x05ac, 0x8218) },
101
102 /* Apple MacBookAir3,1, MacBookAir3,2 */
103 { USB_DEVICE(0x05ac, 0x821b) },
104
105 /* Apple MacBookAir4,1 */
106 { USB_DEVICE(0x05ac, 0x821f) },
107
108 /* Apple MacBookPro8,2 */
109 { USB_DEVICE(0x05ac, 0x821a) },
110
111 /* Apple MacMini5,1 */
112 { USB_DEVICE(0x05ac, 0x8281) },
113
114 /* AVM BlueFRITZ! USB v2.0 */
115 { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
116
117 /* Bluetooth Ultraport Module from IBM */
118 { USB_DEVICE(0x04bf, 0x030a) },
119
120 /* ALPS Modules with non-standard id */
121 { USB_DEVICE(0x044e, 0x3001) },
122 { USB_DEVICE(0x044e, 0x3002) },
123
124 /* Ericsson with non-standard id */
125 { USB_DEVICE(0x0bdb, 0x1002) },
126
127 /* Canyon CN-BTU1 with HID interfaces */
128 { USB_DEVICE(0x0c10, 0x0000) },
129
130 /* Broadcom BCM20702A0 */
131 { USB_DEVICE(0x413c, 0x8197) },
132
133 /* Broadcom BCM20702B0 (Dynex/Insignia) */
134 { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
135
136 /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
137 { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01),
138 .driver_info = BTUSB_BCM_PATCHRAM },
139
140 /* Broadcom BCM920703 (HTC Vive) */
141 { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
142 .driver_info = BTUSB_BCM_PATCHRAM },
143
144 /* Foxconn - Hon Hai */
145 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
146 .driver_info = BTUSB_BCM_PATCHRAM },
147
148 /* Lite-On Technology - Broadcom based */
149 { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
150 .driver_info = BTUSB_BCM_PATCHRAM },
151
152 /* Broadcom devices with vendor specific id */
153 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
154 .driver_info = BTUSB_BCM_PATCHRAM },
155
156 /* ASUSTek Computer - Broadcom based */
157 { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
158 .driver_info = BTUSB_BCM_PATCHRAM },
159
160 /* Belkin F8065bf - Broadcom based */
161 { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
162 .driver_info = BTUSB_BCM_PATCHRAM },
163
164 /* IMC Networks - Broadcom based */
165 { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
166 .driver_info = BTUSB_BCM_PATCHRAM },
167
168 /* Dell Computer - Broadcom based */
169 { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
170 .driver_info = BTUSB_BCM_PATCHRAM },
171
172 /* Toshiba Corp - Broadcom based */
173 { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
174 .driver_info = BTUSB_BCM_PATCHRAM },
175
176 /* Intel Bluetooth USB Bootloader (RAM module) */
177 { USB_DEVICE(0x8087, 0x0a5a),
178 .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
179
180 { } /* Terminating entry */
181 };
182
183 MODULE_DEVICE_TABLE(usb, btusb_table);
184
185 static const struct usb_device_id blacklist_table[] = {
186 /* CSR BlueCore devices */
187 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
188
189 /* Broadcom BCM2033 without firmware */
190 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
191
192 /* Broadcom BCM2045 devices */
193 { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
194
195 /* Atheros 3011 with sflash firmware */
196 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
197 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
198 { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
199 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
200 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
201 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
202 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
203
204 /* Atheros AR9285 Malbec with sflash firmware */
205 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
206
207 /* Atheros 3012 with sflash firmware */
208 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
209 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
210 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
211 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
212 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
213 { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
214 { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
215 { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
216 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
217 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
218 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
219 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
220 { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
221 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
222 { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
223 { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
224 { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
225 { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
226 { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
227 { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
228 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
229 { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
230 { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
231 { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
232 { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
233 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
234 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
235 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
236 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
237 { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
238 { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
239 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
240 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
241 { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
242 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
243 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
244 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
245 { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
246 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
247 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
248 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
249 { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
250 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
251 { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
252 { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
253 { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
254 { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
255 { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
256 { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
257 { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
258
259 /* Atheros AR5BBU12 with sflash firmware */
260 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
261
262 /* Atheros AR5BBU12 with sflash firmware */
263 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
264 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
265
266 /* QCA ROME chipset */
267 { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
268 { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME },
269 { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME },
270 { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
271 { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME },
272 { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
273 { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME },
274 { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME },
275 { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME },
276 { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME },
277 { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME },
278 { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME },
279 { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME },
280 { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME },
281 { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME },
282 { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME },
283
284 /* Broadcom BCM2035 */
285 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
286 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
287 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
288
289 /* Broadcom BCM2045 */
290 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
291 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
292
293 /* IBM/Lenovo ThinkPad with Broadcom chip */
294 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
295 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
296
297 /* HP laptop with Broadcom chip */
298 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
299
300 /* Dell laptop with Broadcom chip */
301 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
302
303 /* Dell Wireless 370 and 410 devices */
304 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
305 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
306
307 /* Belkin F8T012 and F8T013 devices */
308 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
309 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
310
311 /* Asus WL-BTD202 device */
312 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
313
314 /* Kensington Bluetooth USB adapter */
315 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
316
317 /* RTX Telecom based adapters with buggy SCO support */
318 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
319 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
320
321 /* CONWISE Technology based adapters with buggy SCO support */
322 { USB_DEVICE(0x0e5e, 0x6622),
323 .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
324
325 /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
326 { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
327
328 /* Digianswer devices */
329 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
330 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
331
332 /* CSR BlueCore Bluetooth Sniffer */
333 { USB_DEVICE(0x0a12, 0x0002),
334 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
335
336 /* Frontline ComProbe Bluetooth Sniffer */
337 { USB_DEVICE(0x16d3, 0x0002),
338 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
339
340 /* Marvell Bluetooth devices */
341 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
342 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
343 { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
344
345 /* Intel Bluetooth devices */
346 { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW },
347 { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_NEW },
348 { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_NEW },
349 { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
350 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
351 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
352 { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
353 { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL },
354 { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW },
355
356 /* Other Intel Bluetooth devices */
357 { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
358 .driver_info = BTUSB_IGNORE },
359
360 /* Realtek Bluetooth devices */
361 { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
362 .driver_info = BTUSB_REALTEK },
363
364 /* Additional Realtek 8723AE Bluetooth devices */
365 { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
366 { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
367
368 /* Additional Realtek 8723BE Bluetooth devices */
369 { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
370 { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
371 { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
372 { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
373 { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
374 { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
375
376 /* Additional Realtek 8723BU Bluetooth devices */
377 { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
378
379 /* Additional Realtek 8723DE Bluetooth devices */
380 { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
381 { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
382
383 /* Additional Realtek 8821AE Bluetooth devices */
384 { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
385 { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
386 { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
387 { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
388 { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
389
390 /* Additional Realtek 8822BE Bluetooth devices */
391 { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
392 { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
393
394 /* Additional Realtek 8822CE Bluetooth devices */
395 { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK },
396
397 /* Silicon Wave based devices */
398 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
399
400 { } /* Terminating entry */
401 };
402
403 /* The Bluetooth USB module build into some devices needs to be reset on resume,
404 * this is a problem with the platform (likely shutting off all power) not with
405 * the module itself. So we use a DMI list to match known broken platforms.
406 */
407 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
408 {
409 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
410 .matches = {
411 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
412 DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
413 },
414 },
415 {
416 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
417 .matches = {
418 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
419 DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
420 },
421 },
422 {
423 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
424 .matches = {
425 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
426 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
427 },
428 },
429 {}
430 };
431
432 #define BTUSB_MAX_ISOC_FRAMES 10
433
434 #define BTUSB_INTR_RUNNING 0
435 #define BTUSB_BULK_RUNNING 1
436 #define BTUSB_ISOC_RUNNING 2
437 #define BTUSB_SUSPENDING 3
438 #define BTUSB_DID_ISO_RESUME 4
439 #define BTUSB_BOOTLOADER 5
440 #define BTUSB_DOWNLOADING 6
441 #define BTUSB_FIRMWARE_LOADED 7
442 #define BTUSB_FIRMWARE_FAILED 8
443 #define BTUSB_BOOTING 9
444 #define BTUSB_DIAG_RUNNING 10
445 #define BTUSB_OOB_WAKE_ENABLED 11
446
447 struct btusb_data {
448 struct hci_dev *hdev;
449 struct usb_device *udev;
450 struct usb_interface *intf;
451 struct usb_interface *isoc;
452 struct usb_interface *diag;
453 unsigned isoc_ifnum;
454
455 unsigned long flags;
456
457 struct work_struct work;
458 struct work_struct waker;
459
460 struct usb_anchor deferred;
461 struct usb_anchor tx_anchor;
462 int tx_in_flight;
463 spinlock_t txlock;
464
465 struct usb_anchor intr_anchor;
466 struct usb_anchor bulk_anchor;
467 struct usb_anchor isoc_anchor;
468 struct usb_anchor diag_anchor;
469 spinlock_t rxlock;
470
471 struct sk_buff *evt_skb;
472 struct sk_buff *acl_skb;
473 struct sk_buff *sco_skb;
474
475 struct usb_endpoint_descriptor *intr_ep;
476 struct usb_endpoint_descriptor *bulk_tx_ep;
477 struct usb_endpoint_descriptor *bulk_rx_ep;
478 struct usb_endpoint_descriptor *isoc_tx_ep;
479 struct usb_endpoint_descriptor *isoc_rx_ep;
480 struct usb_endpoint_descriptor *diag_tx_ep;
481 struct usb_endpoint_descriptor *diag_rx_ep;
482
483 __u8 cmdreq_type;
484 __u8 cmdreq;
485
486 unsigned int sco_num;
487 int isoc_altsetting;
488 int suspend_count;
489
490 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
491 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
492
493 int (*setup_on_usb)(struct hci_dev *hdev);
494
495 int oob_wake_irq; /* irq for out-of-band wake-on-bt */
496 };
497
btusb_free_frags(struct btusb_data * data)498 static inline void btusb_free_frags(struct btusb_data *data)
499 {
500 unsigned long flags;
501
502 spin_lock_irqsave(&data->rxlock, flags);
503
504 dev_kfree_skb_irq(data->evt_skb);
505 data->evt_skb = NULL;
506
507 dev_kfree_skb_irq(data->acl_skb);
508 data->acl_skb = NULL;
509
510 dev_kfree_skb_irq(data->sco_skb);
511 data->sco_skb = NULL;
512
513 spin_unlock_irqrestore(&data->rxlock, flags);
514 }
515
btusb_recv_intr(struct btusb_data * data,void * buffer,int count)516 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
517 {
518 struct sk_buff *skb;
519 unsigned long flags;
520 int err = 0;
521
522 spin_lock_irqsave(&data->rxlock, flags);
523 skb = data->evt_skb;
524
525 while (count) {
526 int len;
527
528 if (!skb) {
529 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
530 if (!skb) {
531 err = -ENOMEM;
532 break;
533 }
534
535 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
536 hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
537 }
538
539 len = min_t(uint, hci_skb_expect(skb), count);
540 skb_put_data(skb, buffer, len);
541
542 count -= len;
543 buffer += len;
544 hci_skb_expect(skb) -= len;
545
546 if (skb->len == HCI_EVENT_HDR_SIZE) {
547 /* Complete event header */
548 hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
549
550 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
551 kfree_skb(skb);
552 skb = NULL;
553
554 err = -EILSEQ;
555 break;
556 }
557 }
558
559 if (!hci_skb_expect(skb)) {
560 /* Complete frame */
561 data->recv_event(data->hdev, skb);
562 skb = NULL;
563 }
564 }
565
566 data->evt_skb = skb;
567 spin_unlock_irqrestore(&data->rxlock, flags);
568
569 return err;
570 }
571
btusb_recv_bulk(struct btusb_data * data,void * buffer,int count)572 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
573 {
574 struct sk_buff *skb;
575 unsigned long flags;
576 int err = 0;
577
578 spin_lock_irqsave(&data->rxlock, flags);
579 skb = data->acl_skb;
580
581 while (count) {
582 int len;
583
584 if (!skb) {
585 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
586 if (!skb) {
587 err = -ENOMEM;
588 break;
589 }
590
591 hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
592 hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
593 }
594
595 len = min_t(uint, hci_skb_expect(skb), count);
596 skb_put_data(skb, buffer, len);
597
598 count -= len;
599 buffer += len;
600 hci_skb_expect(skb) -= len;
601
602 if (skb->len == HCI_ACL_HDR_SIZE) {
603 __le16 dlen = hci_acl_hdr(skb)->dlen;
604
605 /* Complete ACL header */
606 hci_skb_expect(skb) = __le16_to_cpu(dlen);
607
608 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
609 kfree_skb(skb);
610 skb = NULL;
611
612 err = -EILSEQ;
613 break;
614 }
615 }
616
617 if (!hci_skb_expect(skb)) {
618 /* Complete frame */
619 hci_recv_frame(data->hdev, skb);
620 skb = NULL;
621 }
622 }
623
624 data->acl_skb = skb;
625 spin_unlock_irqrestore(&data->rxlock, flags);
626
627 return err;
628 }
629
btusb_recv_isoc(struct btusb_data * data,void * buffer,int count)630 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
631 {
632 struct sk_buff *skb;
633 unsigned long flags;
634 int err = 0;
635
636 spin_lock_irqsave(&data->rxlock, flags);
637 skb = data->sco_skb;
638
639 while (count) {
640 int len;
641
642 if (!skb) {
643 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
644 if (!skb) {
645 err = -ENOMEM;
646 break;
647 }
648
649 hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
650 hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
651 }
652
653 len = min_t(uint, hci_skb_expect(skb), count);
654 skb_put_data(skb, buffer, len);
655
656 count -= len;
657 buffer += len;
658 hci_skb_expect(skb) -= len;
659
660 if (skb->len == HCI_SCO_HDR_SIZE) {
661 /* Complete SCO header */
662 hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
663
664 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
665 kfree_skb(skb);
666 skb = NULL;
667
668 err = -EILSEQ;
669 break;
670 }
671 }
672
673 if (!hci_skb_expect(skb)) {
674 /* Complete frame */
675 hci_recv_frame(data->hdev, skb);
676 skb = NULL;
677 }
678 }
679
680 data->sco_skb = skb;
681 spin_unlock_irqrestore(&data->rxlock, flags);
682
683 return err;
684 }
685
btusb_intr_complete(struct urb * urb)686 static void btusb_intr_complete(struct urb *urb)
687 {
688 struct hci_dev *hdev = urb->context;
689 struct btusb_data *data = hci_get_drvdata(hdev);
690 int err;
691
692 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
693 urb->actual_length);
694
695 if (!test_bit(HCI_RUNNING, &hdev->flags))
696 return;
697
698 if (urb->status == 0) {
699 hdev->stat.byte_rx += urb->actual_length;
700
701 if (btusb_recv_intr(data, urb->transfer_buffer,
702 urb->actual_length) < 0) {
703 bt_dev_err(hdev, "corrupted event packet");
704 hdev->stat.err_rx++;
705 }
706 } else if (urb->status == -ENOENT) {
707 /* Avoid suspend failed when usb_kill_urb */
708 return;
709 }
710
711 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
712 return;
713
714 usb_mark_last_busy(data->udev);
715 usb_anchor_urb(urb, &data->intr_anchor);
716
717 err = usb_submit_urb(urb, GFP_ATOMIC);
718 if (err < 0) {
719 /* -EPERM: urb is being killed;
720 * -ENODEV: device got disconnected
721 */
722 if (err != -EPERM && err != -ENODEV)
723 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
724 urb, -err);
725 usb_unanchor_urb(urb);
726 }
727 }
728
btusb_submit_intr_urb(struct hci_dev * hdev,gfp_t mem_flags)729 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
730 {
731 struct btusb_data *data = hci_get_drvdata(hdev);
732 struct urb *urb;
733 unsigned char *buf;
734 unsigned int pipe;
735 int err, size;
736
737 BT_DBG("%s", hdev->name);
738
739 if (!data->intr_ep)
740 return -ENODEV;
741
742 urb = usb_alloc_urb(0, mem_flags);
743 if (!urb)
744 return -ENOMEM;
745
746 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
747
748 buf = kmalloc(size, mem_flags);
749 if (!buf) {
750 usb_free_urb(urb);
751 return -ENOMEM;
752 }
753
754 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
755
756 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
757 btusb_intr_complete, hdev, data->intr_ep->bInterval);
758
759 urb->transfer_flags |= URB_FREE_BUFFER;
760
761 usb_anchor_urb(urb, &data->intr_anchor);
762
763 err = usb_submit_urb(urb, mem_flags);
764 if (err < 0) {
765 if (err != -EPERM && err != -ENODEV)
766 bt_dev_err(hdev, "urb %p submission failed (%d)",
767 urb, -err);
768 usb_unanchor_urb(urb);
769 }
770
771 usb_free_urb(urb);
772
773 return err;
774 }
775
btusb_bulk_complete(struct urb * urb)776 static void btusb_bulk_complete(struct urb *urb)
777 {
778 struct hci_dev *hdev = urb->context;
779 struct btusb_data *data = hci_get_drvdata(hdev);
780 int err;
781
782 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
783 urb->actual_length);
784
785 if (!test_bit(HCI_RUNNING, &hdev->flags))
786 return;
787
788 if (urb->status == 0) {
789 hdev->stat.byte_rx += urb->actual_length;
790
791 if (data->recv_bulk(data, urb->transfer_buffer,
792 urb->actual_length) < 0) {
793 bt_dev_err(hdev, "corrupted ACL packet");
794 hdev->stat.err_rx++;
795 }
796 } else if (urb->status == -ENOENT) {
797 /* Avoid suspend failed when usb_kill_urb */
798 return;
799 }
800
801 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
802 return;
803
804 usb_anchor_urb(urb, &data->bulk_anchor);
805 usb_mark_last_busy(data->udev);
806
807 err = usb_submit_urb(urb, GFP_ATOMIC);
808 if (err < 0) {
809 /* -EPERM: urb is being killed;
810 * -ENODEV: device got disconnected
811 */
812 if (err != -EPERM && err != -ENODEV)
813 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
814 urb, -err);
815 usb_unanchor_urb(urb);
816 }
817 }
818
btusb_submit_bulk_urb(struct hci_dev * hdev,gfp_t mem_flags)819 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
820 {
821 struct btusb_data *data = hci_get_drvdata(hdev);
822 struct urb *urb;
823 unsigned char *buf;
824 unsigned int pipe;
825 int err, size = HCI_MAX_FRAME_SIZE;
826
827 BT_DBG("%s", hdev->name);
828
829 if (!data->bulk_rx_ep)
830 return -ENODEV;
831
832 urb = usb_alloc_urb(0, mem_flags);
833 if (!urb)
834 return -ENOMEM;
835
836 buf = kmalloc(size, mem_flags);
837 if (!buf) {
838 usb_free_urb(urb);
839 return -ENOMEM;
840 }
841
842 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
843
844 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
845 btusb_bulk_complete, hdev);
846
847 urb->transfer_flags |= URB_FREE_BUFFER;
848
849 usb_mark_last_busy(data->udev);
850 usb_anchor_urb(urb, &data->bulk_anchor);
851
852 err = usb_submit_urb(urb, mem_flags);
853 if (err < 0) {
854 if (err != -EPERM && err != -ENODEV)
855 bt_dev_err(hdev, "urb %p submission failed (%d)",
856 urb, -err);
857 usb_unanchor_urb(urb);
858 }
859
860 usb_free_urb(urb);
861
862 return err;
863 }
864
btusb_isoc_complete(struct urb * urb)865 static void btusb_isoc_complete(struct urb *urb)
866 {
867 struct hci_dev *hdev = urb->context;
868 struct btusb_data *data = hci_get_drvdata(hdev);
869 int i, err;
870
871 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
872 urb->actual_length);
873
874 if (!test_bit(HCI_RUNNING, &hdev->flags))
875 return;
876
877 if (urb->status == 0) {
878 for (i = 0; i < urb->number_of_packets; i++) {
879 unsigned int offset = urb->iso_frame_desc[i].offset;
880 unsigned int length = urb->iso_frame_desc[i].actual_length;
881
882 if (urb->iso_frame_desc[i].status)
883 continue;
884
885 hdev->stat.byte_rx += length;
886
887 if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
888 length) < 0) {
889 bt_dev_err(hdev, "corrupted SCO packet");
890 hdev->stat.err_rx++;
891 }
892 }
893 } else if (urb->status == -ENOENT) {
894 /* Avoid suspend failed when usb_kill_urb */
895 return;
896 }
897
898 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
899 return;
900
901 usb_anchor_urb(urb, &data->isoc_anchor);
902
903 err = usb_submit_urb(urb, GFP_ATOMIC);
904 if (err < 0) {
905 /* -EPERM: urb is being killed;
906 * -ENODEV: device got disconnected
907 */
908 if (err != -EPERM && err != -ENODEV)
909 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
910 urb, -err);
911 usb_unanchor_urb(urb);
912 }
913 }
914
__fill_isoc_descriptor(struct urb * urb,int len,int mtu)915 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
916 {
917 int i, offset = 0;
918
919 BT_DBG("len %d mtu %d", len, mtu);
920
921 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
922 i++, offset += mtu, len -= mtu) {
923 urb->iso_frame_desc[i].offset = offset;
924 urb->iso_frame_desc[i].length = mtu;
925 }
926
927 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
928 urb->iso_frame_desc[i].offset = offset;
929 urb->iso_frame_desc[i].length = len;
930 i++;
931 }
932
933 urb->number_of_packets = i;
934 }
935
btusb_submit_isoc_urb(struct hci_dev * hdev,gfp_t mem_flags)936 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
937 {
938 struct btusb_data *data = hci_get_drvdata(hdev);
939 struct urb *urb;
940 unsigned char *buf;
941 unsigned int pipe;
942 int err, size;
943
944 BT_DBG("%s", hdev->name);
945
946 if (!data->isoc_rx_ep)
947 return -ENODEV;
948
949 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
950 if (!urb)
951 return -ENOMEM;
952
953 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
954 BTUSB_MAX_ISOC_FRAMES;
955
956 buf = kmalloc(size, mem_flags);
957 if (!buf) {
958 usb_free_urb(urb);
959 return -ENOMEM;
960 }
961
962 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
963
964 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
965 hdev, data->isoc_rx_ep->bInterval);
966
967 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
968
969 __fill_isoc_descriptor(urb, size,
970 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
971
972 usb_anchor_urb(urb, &data->isoc_anchor);
973
974 err = usb_submit_urb(urb, mem_flags);
975 if (err < 0) {
976 if (err != -EPERM && err != -ENODEV)
977 bt_dev_err(hdev, "urb %p submission failed (%d)",
978 urb, -err);
979 usb_unanchor_urb(urb);
980 }
981
982 usb_free_urb(urb);
983
984 return err;
985 }
986
btusb_diag_complete(struct urb * urb)987 static void btusb_diag_complete(struct urb *urb)
988 {
989 struct hci_dev *hdev = urb->context;
990 struct btusb_data *data = hci_get_drvdata(hdev);
991 int err;
992
993 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
994 urb->actual_length);
995
996 if (urb->status == 0) {
997 struct sk_buff *skb;
998
999 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1000 if (skb) {
1001 skb_put_data(skb, urb->transfer_buffer,
1002 urb->actual_length);
1003 hci_recv_diag(hdev, skb);
1004 }
1005 } else if (urb->status == -ENOENT) {
1006 /* Avoid suspend failed when usb_kill_urb */
1007 return;
1008 }
1009
1010 if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1011 return;
1012
1013 usb_anchor_urb(urb, &data->diag_anchor);
1014 usb_mark_last_busy(data->udev);
1015
1016 err = usb_submit_urb(urb, GFP_ATOMIC);
1017 if (err < 0) {
1018 /* -EPERM: urb is being killed;
1019 * -ENODEV: device got disconnected
1020 */
1021 if (err != -EPERM && err != -ENODEV)
1022 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1023 urb, -err);
1024 usb_unanchor_urb(urb);
1025 }
1026 }
1027
btusb_submit_diag_urb(struct hci_dev * hdev,gfp_t mem_flags)1028 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1029 {
1030 struct btusb_data *data = hci_get_drvdata(hdev);
1031 struct urb *urb;
1032 unsigned char *buf;
1033 unsigned int pipe;
1034 int err, size = HCI_MAX_FRAME_SIZE;
1035
1036 BT_DBG("%s", hdev->name);
1037
1038 if (!data->diag_rx_ep)
1039 return -ENODEV;
1040
1041 urb = usb_alloc_urb(0, mem_flags);
1042 if (!urb)
1043 return -ENOMEM;
1044
1045 buf = kmalloc(size, mem_flags);
1046 if (!buf) {
1047 usb_free_urb(urb);
1048 return -ENOMEM;
1049 }
1050
1051 pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1052
1053 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1054 btusb_diag_complete, hdev);
1055
1056 urb->transfer_flags |= URB_FREE_BUFFER;
1057
1058 usb_mark_last_busy(data->udev);
1059 usb_anchor_urb(urb, &data->diag_anchor);
1060
1061 err = usb_submit_urb(urb, mem_flags);
1062 if (err < 0) {
1063 if (err != -EPERM && err != -ENODEV)
1064 bt_dev_err(hdev, "urb %p submission failed (%d)",
1065 urb, -err);
1066 usb_unanchor_urb(urb);
1067 }
1068
1069 usb_free_urb(urb);
1070
1071 return err;
1072 }
1073
btusb_tx_complete(struct urb * urb)1074 static void btusb_tx_complete(struct urb *urb)
1075 {
1076 struct sk_buff *skb = urb->context;
1077 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1078 struct btusb_data *data = hci_get_drvdata(hdev);
1079 unsigned long flags;
1080
1081 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1082 urb->actual_length);
1083
1084 if (!test_bit(HCI_RUNNING, &hdev->flags))
1085 goto done;
1086
1087 if (!urb->status)
1088 hdev->stat.byte_tx += urb->transfer_buffer_length;
1089 else
1090 hdev->stat.err_tx++;
1091
1092 done:
1093 spin_lock_irqsave(&data->txlock, flags);
1094 data->tx_in_flight--;
1095 spin_unlock_irqrestore(&data->txlock, flags);
1096
1097 kfree(urb->setup_packet);
1098
1099 kfree_skb(skb);
1100 }
1101
btusb_isoc_tx_complete(struct urb * urb)1102 static void btusb_isoc_tx_complete(struct urb *urb)
1103 {
1104 struct sk_buff *skb = urb->context;
1105 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1106
1107 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1108 urb->actual_length);
1109
1110 if (!test_bit(HCI_RUNNING, &hdev->flags))
1111 goto done;
1112
1113 if (!urb->status)
1114 hdev->stat.byte_tx += urb->transfer_buffer_length;
1115 else
1116 hdev->stat.err_tx++;
1117
1118 done:
1119 kfree(urb->setup_packet);
1120
1121 kfree_skb(skb);
1122 }
1123
btusb_open(struct hci_dev * hdev)1124 static int btusb_open(struct hci_dev *hdev)
1125 {
1126 struct btusb_data *data = hci_get_drvdata(hdev);
1127 int err;
1128
1129 BT_DBG("%s", hdev->name);
1130
1131 err = usb_autopm_get_interface(data->intf);
1132 if (err < 0)
1133 return err;
1134
1135 /* Patching USB firmware files prior to starting any URBs of HCI path
1136 * It is more safe to use USB bulk channel for downloading USB patch
1137 */
1138 if (data->setup_on_usb) {
1139 err = data->setup_on_usb(hdev);
1140 if (err < 0)
1141 goto setup_fail;
1142 }
1143
1144 data->intf->needs_remote_wakeup = 1;
1145
1146 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1147 goto done;
1148
1149 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1150 if (err < 0)
1151 goto failed;
1152
1153 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1154 if (err < 0) {
1155 usb_kill_anchored_urbs(&data->intr_anchor);
1156 goto failed;
1157 }
1158
1159 set_bit(BTUSB_BULK_RUNNING, &data->flags);
1160 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1161
1162 if (data->diag) {
1163 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1164 set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1165 }
1166
1167 done:
1168 usb_autopm_put_interface(data->intf);
1169 return 0;
1170
1171 failed:
1172 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1173 setup_fail:
1174 usb_autopm_put_interface(data->intf);
1175 return err;
1176 }
1177
btusb_stop_traffic(struct btusb_data * data)1178 static void btusb_stop_traffic(struct btusb_data *data)
1179 {
1180 usb_kill_anchored_urbs(&data->intr_anchor);
1181 usb_kill_anchored_urbs(&data->bulk_anchor);
1182 usb_kill_anchored_urbs(&data->isoc_anchor);
1183 usb_kill_anchored_urbs(&data->diag_anchor);
1184 }
1185
btusb_close(struct hci_dev * hdev)1186 static int btusb_close(struct hci_dev *hdev)
1187 {
1188 struct btusb_data *data = hci_get_drvdata(hdev);
1189 int err;
1190
1191 BT_DBG("%s", hdev->name);
1192
1193 cancel_work_sync(&data->work);
1194 cancel_work_sync(&data->waker);
1195
1196 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1197 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1198 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1199 clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1200
1201 btusb_stop_traffic(data);
1202 btusb_free_frags(data);
1203
1204 err = usb_autopm_get_interface(data->intf);
1205 if (err < 0)
1206 goto failed;
1207
1208 data->intf->needs_remote_wakeup = 0;
1209 usb_autopm_put_interface(data->intf);
1210
1211 failed:
1212 usb_scuttle_anchored_urbs(&data->deferred);
1213 return 0;
1214 }
1215
btusb_flush(struct hci_dev * hdev)1216 static int btusb_flush(struct hci_dev *hdev)
1217 {
1218 struct btusb_data *data = hci_get_drvdata(hdev);
1219
1220 BT_DBG("%s", hdev->name);
1221
1222 usb_kill_anchored_urbs(&data->tx_anchor);
1223 btusb_free_frags(data);
1224
1225 return 0;
1226 }
1227
alloc_ctrl_urb(struct hci_dev * hdev,struct sk_buff * skb)1228 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1229 {
1230 struct btusb_data *data = hci_get_drvdata(hdev);
1231 struct usb_ctrlrequest *dr;
1232 struct urb *urb;
1233 unsigned int pipe;
1234
1235 urb = usb_alloc_urb(0, GFP_KERNEL);
1236 if (!urb)
1237 return ERR_PTR(-ENOMEM);
1238
1239 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1240 if (!dr) {
1241 usb_free_urb(urb);
1242 return ERR_PTR(-ENOMEM);
1243 }
1244
1245 dr->bRequestType = data->cmdreq_type;
1246 dr->bRequest = data->cmdreq;
1247 dr->wIndex = 0;
1248 dr->wValue = 0;
1249 dr->wLength = __cpu_to_le16(skb->len);
1250
1251 pipe = usb_sndctrlpipe(data->udev, 0x00);
1252
1253 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1254 skb->data, skb->len, btusb_tx_complete, skb);
1255
1256 skb->dev = (void *)hdev;
1257
1258 return urb;
1259 }
1260
alloc_bulk_urb(struct hci_dev * hdev,struct sk_buff * skb)1261 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1262 {
1263 struct btusb_data *data = hci_get_drvdata(hdev);
1264 struct urb *urb;
1265 unsigned int pipe;
1266
1267 if (!data->bulk_tx_ep)
1268 return ERR_PTR(-ENODEV);
1269
1270 urb = usb_alloc_urb(0, GFP_KERNEL);
1271 if (!urb)
1272 return ERR_PTR(-ENOMEM);
1273
1274 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1275
1276 usb_fill_bulk_urb(urb, data->udev, pipe,
1277 skb->data, skb->len, btusb_tx_complete, skb);
1278
1279 skb->dev = (void *)hdev;
1280
1281 return urb;
1282 }
1283
alloc_isoc_urb(struct hci_dev * hdev,struct sk_buff * skb)1284 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1285 {
1286 struct btusb_data *data = hci_get_drvdata(hdev);
1287 struct urb *urb;
1288 unsigned int pipe;
1289
1290 if (!data->isoc_tx_ep)
1291 return ERR_PTR(-ENODEV);
1292
1293 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1294 if (!urb)
1295 return ERR_PTR(-ENOMEM);
1296
1297 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1298
1299 usb_fill_int_urb(urb, data->udev, pipe,
1300 skb->data, skb->len, btusb_isoc_tx_complete,
1301 skb, data->isoc_tx_ep->bInterval);
1302
1303 urb->transfer_flags = URB_ISO_ASAP;
1304
1305 __fill_isoc_descriptor(urb, skb->len,
1306 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1307
1308 skb->dev = (void *)hdev;
1309
1310 return urb;
1311 }
1312
submit_tx_urb(struct hci_dev * hdev,struct urb * urb)1313 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1314 {
1315 struct btusb_data *data = hci_get_drvdata(hdev);
1316 int err;
1317
1318 usb_anchor_urb(urb, &data->tx_anchor);
1319
1320 err = usb_submit_urb(urb, GFP_KERNEL);
1321 if (err < 0) {
1322 if (err != -EPERM && err != -ENODEV)
1323 bt_dev_err(hdev, "urb %p submission failed (%d)",
1324 urb, -err);
1325 kfree(urb->setup_packet);
1326 usb_unanchor_urb(urb);
1327 } else {
1328 usb_mark_last_busy(data->udev);
1329 }
1330
1331 usb_free_urb(urb);
1332 return err;
1333 }
1334
submit_or_queue_tx_urb(struct hci_dev * hdev,struct urb * urb)1335 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1336 {
1337 struct btusb_data *data = hci_get_drvdata(hdev);
1338 unsigned long flags;
1339 bool suspending;
1340
1341 spin_lock_irqsave(&data->txlock, flags);
1342 suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1343 if (!suspending)
1344 data->tx_in_flight++;
1345 spin_unlock_irqrestore(&data->txlock, flags);
1346
1347 if (!suspending)
1348 return submit_tx_urb(hdev, urb);
1349
1350 usb_anchor_urb(urb, &data->deferred);
1351 schedule_work(&data->waker);
1352
1353 usb_free_urb(urb);
1354 return 0;
1355 }
1356
btusb_send_frame(struct hci_dev * hdev,struct sk_buff * skb)1357 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1358 {
1359 struct urb *urb;
1360
1361 BT_DBG("%s", hdev->name);
1362
1363 switch (hci_skb_pkt_type(skb)) {
1364 case HCI_COMMAND_PKT:
1365 urb = alloc_ctrl_urb(hdev, skb);
1366 if (IS_ERR(urb))
1367 return PTR_ERR(urb);
1368
1369 hdev->stat.cmd_tx++;
1370 return submit_or_queue_tx_urb(hdev, urb);
1371
1372 case HCI_ACLDATA_PKT:
1373 urb = alloc_bulk_urb(hdev, skb);
1374 if (IS_ERR(urb))
1375 return PTR_ERR(urb);
1376
1377 hdev->stat.acl_tx++;
1378 return submit_or_queue_tx_urb(hdev, urb);
1379
1380 case HCI_SCODATA_PKT:
1381 if (hci_conn_num(hdev, SCO_LINK) < 1)
1382 return -ENODEV;
1383
1384 urb = alloc_isoc_urb(hdev, skb);
1385 if (IS_ERR(urb))
1386 return PTR_ERR(urb);
1387
1388 hdev->stat.sco_tx++;
1389 return submit_tx_urb(hdev, urb);
1390 }
1391
1392 return -EILSEQ;
1393 }
1394
btusb_notify(struct hci_dev * hdev,unsigned int evt)1395 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1396 {
1397 struct btusb_data *data = hci_get_drvdata(hdev);
1398
1399 BT_DBG("%s evt %d", hdev->name, evt);
1400
1401 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1402 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1403 schedule_work(&data->work);
1404 }
1405 }
1406
__set_isoc_interface(struct hci_dev * hdev,int altsetting)1407 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1408 {
1409 struct btusb_data *data = hci_get_drvdata(hdev);
1410 struct usb_interface *intf = data->isoc;
1411 struct usb_endpoint_descriptor *ep_desc;
1412 int i, err;
1413
1414 if (!data->isoc)
1415 return -ENODEV;
1416
1417 err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1418 if (err < 0) {
1419 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1420 return err;
1421 }
1422
1423 data->isoc_altsetting = altsetting;
1424
1425 data->isoc_tx_ep = NULL;
1426 data->isoc_rx_ep = NULL;
1427
1428 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1429 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1430
1431 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1432 data->isoc_tx_ep = ep_desc;
1433 continue;
1434 }
1435
1436 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1437 data->isoc_rx_ep = ep_desc;
1438 continue;
1439 }
1440 }
1441
1442 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1443 bt_dev_err(hdev, "invalid SCO descriptors");
1444 return -ENODEV;
1445 }
1446
1447 return 0;
1448 }
1449
btusb_work(struct work_struct * work)1450 static void btusb_work(struct work_struct *work)
1451 {
1452 struct btusb_data *data = container_of(work, struct btusb_data, work);
1453 struct hci_dev *hdev = data->hdev;
1454 int new_alts;
1455 int err;
1456
1457 if (data->sco_num > 0) {
1458 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1459 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1460 if (err < 0) {
1461 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1462 usb_kill_anchored_urbs(&data->isoc_anchor);
1463 return;
1464 }
1465
1466 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1467 }
1468
1469 if (hdev->voice_setting & 0x0020) {
1470 static const int alts[3] = { 2, 4, 5 };
1471
1472 new_alts = alts[data->sco_num - 1];
1473 } else {
1474 new_alts = data->sco_num;
1475 }
1476
1477 if (data->isoc_altsetting != new_alts) {
1478 unsigned long flags;
1479
1480 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1481 usb_kill_anchored_urbs(&data->isoc_anchor);
1482
1483 /* When isochronous alternate setting needs to be
1484 * changed, because SCO connection has been added
1485 * or removed, a packet fragment may be left in the
1486 * reassembling state. This could lead to wrongly
1487 * assembled fragments.
1488 *
1489 * Clear outstanding fragment when selecting a new
1490 * alternate setting.
1491 */
1492 spin_lock_irqsave(&data->rxlock, flags);
1493 kfree_skb(data->sco_skb);
1494 data->sco_skb = NULL;
1495 spin_unlock_irqrestore(&data->rxlock, flags);
1496
1497 if (__set_isoc_interface(hdev, new_alts) < 0)
1498 return;
1499 }
1500
1501 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1502 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1503 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1504 else
1505 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1506 }
1507 } else {
1508 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1509 usb_kill_anchored_urbs(&data->isoc_anchor);
1510
1511 __set_isoc_interface(hdev, 0);
1512 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1513 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1514 }
1515 }
1516
btusb_waker(struct work_struct * work)1517 static void btusb_waker(struct work_struct *work)
1518 {
1519 struct btusb_data *data = container_of(work, struct btusb_data, waker);
1520 int err;
1521
1522 err = usb_autopm_get_interface(data->intf);
1523 if (err < 0)
1524 return;
1525
1526 usb_autopm_put_interface(data->intf);
1527 }
1528
btusb_setup_bcm92035(struct hci_dev * hdev)1529 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1530 {
1531 struct sk_buff *skb;
1532 u8 val = 0x00;
1533
1534 BT_DBG("%s", hdev->name);
1535
1536 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1537 if (IS_ERR(skb))
1538 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
1539 else
1540 kfree_skb(skb);
1541
1542 return 0;
1543 }
1544
btusb_setup_csr(struct hci_dev * hdev)1545 static int btusb_setup_csr(struct hci_dev *hdev)
1546 {
1547 struct hci_rp_read_local_version *rp;
1548 struct sk_buff *skb;
1549
1550 BT_DBG("%s", hdev->name);
1551
1552 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1553 HCI_INIT_TIMEOUT);
1554 if (IS_ERR(skb)) {
1555 int err = PTR_ERR(skb);
1556 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
1557 return err;
1558 }
1559
1560 if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1561 bt_dev_err(hdev, "CSR: Local version length mismatch");
1562 kfree_skb(skb);
1563 return -EIO;
1564 }
1565
1566 rp = (struct hci_rp_read_local_version *)skb->data;
1567
1568 /* Detect controllers which aren't real CSR ones. */
1569 if (le16_to_cpu(rp->manufacturer) != 10 ||
1570 le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1571 /* Clear the reset quirk since this is not an actual
1572 * early Bluetooth 1.1 device from CSR.
1573 */
1574 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1575
1576 /* These fake CSR controllers have all a broken
1577 * stored link key handling and so just disable it.
1578 */
1579 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1580 }
1581
1582 kfree_skb(skb);
1583
1584 return 0;
1585 }
1586
btusb_setup_intel_get_fw(struct hci_dev * hdev,struct intel_version * ver)1587 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1588 struct intel_version *ver)
1589 {
1590 const struct firmware *fw;
1591 char fwname[64];
1592 int ret;
1593
1594 snprintf(fwname, sizeof(fwname),
1595 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1596 ver->hw_platform, ver->hw_variant, ver->hw_revision,
1597 ver->fw_variant, ver->fw_revision, ver->fw_build_num,
1598 ver->fw_build_ww, ver->fw_build_yy);
1599
1600 ret = request_firmware(&fw, fwname, &hdev->dev);
1601 if (ret < 0) {
1602 if (ret == -EINVAL) {
1603 bt_dev_err(hdev, "Intel firmware file request failed (%d)",
1604 ret);
1605 return NULL;
1606 }
1607
1608 bt_dev_err(hdev, "failed to open Intel firmware file: %s (%d)",
1609 fwname, ret);
1610
1611 /* If the correct firmware patch file is not found, use the
1612 * default firmware patch file instead
1613 */
1614 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1615 ver->hw_platform, ver->hw_variant);
1616 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1617 bt_dev_err(hdev, "failed to open default fw file: %s",
1618 fwname);
1619 return NULL;
1620 }
1621 }
1622
1623 bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname);
1624
1625 return fw;
1626 }
1627
btusb_setup_intel_patching(struct hci_dev * hdev,const struct firmware * fw,const u8 ** fw_ptr,int * disable_patch)1628 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1629 const struct firmware *fw,
1630 const u8 **fw_ptr, int *disable_patch)
1631 {
1632 struct sk_buff *skb;
1633 struct hci_command_hdr *cmd;
1634 const u8 *cmd_param;
1635 struct hci_event_hdr *evt = NULL;
1636 const u8 *evt_param = NULL;
1637 int remain = fw->size - (*fw_ptr - fw->data);
1638
1639 /* The first byte indicates the types of the patch command or event.
1640 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1641 * in the current firmware buffer doesn't start with 0x01 or
1642 * the size of remain buffer is smaller than HCI command header,
1643 * the firmware file is corrupted and it should stop the patching
1644 * process.
1645 */
1646 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1647 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd read");
1648 return -EINVAL;
1649 }
1650 (*fw_ptr)++;
1651 remain--;
1652
1653 cmd = (struct hci_command_hdr *)(*fw_ptr);
1654 *fw_ptr += sizeof(*cmd);
1655 remain -= sizeof(*cmd);
1656
1657 /* Ensure that the remain firmware data is long enough than the length
1658 * of command parameter. If not, the firmware file is corrupted.
1659 */
1660 if (remain < cmd->plen) {
1661 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd len");
1662 return -EFAULT;
1663 }
1664
1665 /* If there is a command that loads a patch in the firmware
1666 * file, then enable the patch upon success, otherwise just
1667 * disable the manufacturer mode, for example patch activation
1668 * is not required when the default firmware patch file is used
1669 * because there are no patch data to load.
1670 */
1671 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1672 *disable_patch = 0;
1673
1674 cmd_param = *fw_ptr;
1675 *fw_ptr += cmd->plen;
1676 remain -= cmd->plen;
1677
1678 /* This reads the expected events when the above command is sent to the
1679 * device. Some vendor commands expects more than one events, for
1680 * example command status event followed by vendor specific event.
1681 * For this case, it only keeps the last expected event. so the command
1682 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1683 * last expected event.
1684 */
1685 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1686 (*fw_ptr)++;
1687 remain--;
1688
1689 evt = (struct hci_event_hdr *)(*fw_ptr);
1690 *fw_ptr += sizeof(*evt);
1691 remain -= sizeof(*evt);
1692
1693 if (remain < evt->plen) {
1694 bt_dev_err(hdev, "Intel fw corrupted: invalid evt len");
1695 return -EFAULT;
1696 }
1697
1698 evt_param = *fw_ptr;
1699 *fw_ptr += evt->plen;
1700 remain -= evt->plen;
1701 }
1702
1703 /* Every HCI commands in the firmware file has its correspond event.
1704 * If event is not found or remain is smaller than zero, the firmware
1705 * file is corrupted.
1706 */
1707 if (!evt || !evt_param || remain < 0) {
1708 bt_dev_err(hdev, "Intel fw corrupted: invalid evt read");
1709 return -EFAULT;
1710 }
1711
1712 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1713 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1714 if (IS_ERR(skb)) {
1715 bt_dev_err(hdev, "sending Intel patch command (0x%4.4x) failed (%ld)",
1716 cmd->opcode, PTR_ERR(skb));
1717 return PTR_ERR(skb);
1718 }
1719
1720 /* It ensures that the returned event matches the event data read from
1721 * the firmware file. At fist, it checks the length and then
1722 * the contents of the event.
1723 */
1724 if (skb->len != evt->plen) {
1725 bt_dev_err(hdev, "mismatch event length (opcode 0x%4.4x)",
1726 le16_to_cpu(cmd->opcode));
1727 kfree_skb(skb);
1728 return -EFAULT;
1729 }
1730
1731 if (memcmp(skb->data, evt_param, evt->plen)) {
1732 bt_dev_err(hdev, "mismatch event parameter (opcode 0x%4.4x)",
1733 le16_to_cpu(cmd->opcode));
1734 kfree_skb(skb);
1735 return -EFAULT;
1736 }
1737 kfree_skb(skb);
1738
1739 return 0;
1740 }
1741
btusb_setup_intel(struct hci_dev * hdev)1742 static int btusb_setup_intel(struct hci_dev *hdev)
1743 {
1744 struct sk_buff *skb;
1745 const struct firmware *fw;
1746 const u8 *fw_ptr;
1747 int disable_patch, err;
1748 struct intel_version ver;
1749
1750 BT_DBG("%s", hdev->name);
1751
1752 /* The controller has a bug with the first HCI command sent to it
1753 * returning number of completed commands as zero. This would stall the
1754 * command processing in the Bluetooth core.
1755 *
1756 * As a workaround, send HCI Reset command first which will reset the
1757 * number of completed commands and allow normal command processing
1758 * from now on.
1759 */
1760 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1761 if (IS_ERR(skb)) {
1762 bt_dev_err(hdev, "sending initial HCI reset command failed (%ld)",
1763 PTR_ERR(skb));
1764 return PTR_ERR(skb);
1765 }
1766 kfree_skb(skb);
1767
1768 /* Read Intel specific controller version first to allow selection of
1769 * which firmware file to load.
1770 *
1771 * The returned information are hardware variant and revision plus
1772 * firmware variant, revision and build number.
1773 */
1774 err = btintel_read_version(hdev, &ver);
1775 if (err)
1776 return err;
1777
1778 bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1779 ver.hw_platform, ver.hw_variant, ver.hw_revision,
1780 ver.fw_variant, ver.fw_revision, ver.fw_build_num,
1781 ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
1782
1783 /* fw_patch_num indicates the version of patch the device currently
1784 * have. If there is no patch data in the device, it is always 0x00.
1785 * So, if it is other than 0x00, no need to patch the device again.
1786 */
1787 if (ver.fw_patch_num) {
1788 bt_dev_info(hdev, "Intel device is already patched. "
1789 "patch num: %02x", ver.fw_patch_num);
1790 goto complete;
1791 }
1792
1793 /* Opens the firmware patch file based on the firmware version read
1794 * from the controller. If it fails to open the matching firmware
1795 * patch file, it tries to open the default firmware patch file.
1796 * If no patch file is found, allow the device to operate without
1797 * a patch.
1798 */
1799 fw = btusb_setup_intel_get_fw(hdev, &ver);
1800 if (!fw)
1801 goto complete;
1802 fw_ptr = fw->data;
1803
1804 /* Enable the manufacturer mode of the controller.
1805 * Only while this mode is enabled, the driver can download the
1806 * firmware patch data and configuration parameters.
1807 */
1808 err = btintel_enter_mfg(hdev);
1809 if (err) {
1810 release_firmware(fw);
1811 return err;
1812 }
1813
1814 disable_patch = 1;
1815
1816 /* The firmware data file consists of list of Intel specific HCI
1817 * commands and its expected events. The first byte indicates the
1818 * type of the message, either HCI command or HCI event.
1819 *
1820 * It reads the command and its expected event from the firmware file,
1821 * and send to the controller. Once __hci_cmd_sync_ev() returns,
1822 * the returned event is compared with the event read from the firmware
1823 * file and it will continue until all the messages are downloaded to
1824 * the controller.
1825 *
1826 * Once the firmware patching is completed successfully,
1827 * the manufacturer mode is disabled with reset and activating the
1828 * downloaded patch.
1829 *
1830 * If the firmware patching fails, the manufacturer mode is
1831 * disabled with reset and deactivating the patch.
1832 *
1833 * If the default patch file is used, no reset is done when disabling
1834 * the manufacturer.
1835 */
1836 while (fw->size > fw_ptr - fw->data) {
1837 int ret;
1838
1839 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1840 &disable_patch);
1841 if (ret < 0)
1842 goto exit_mfg_deactivate;
1843 }
1844
1845 release_firmware(fw);
1846
1847 if (disable_patch)
1848 goto exit_mfg_disable;
1849
1850 /* Patching completed successfully and disable the manufacturer mode
1851 * with reset and activate the downloaded firmware patches.
1852 */
1853 err = btintel_exit_mfg(hdev, true, true);
1854 if (err)
1855 return err;
1856
1857 bt_dev_info(hdev, "Intel firmware patch completed and activated");
1858
1859 goto complete;
1860
1861 exit_mfg_disable:
1862 /* Disable the manufacturer mode without reset */
1863 err = btintel_exit_mfg(hdev, false, false);
1864 if (err)
1865 return err;
1866
1867 bt_dev_info(hdev, "Intel firmware patch completed");
1868
1869 goto complete;
1870
1871 exit_mfg_deactivate:
1872 release_firmware(fw);
1873
1874 /* Patching failed. Disable the manufacturer mode with reset and
1875 * deactivate the downloaded firmware patches.
1876 */
1877 err = btintel_exit_mfg(hdev, true, false);
1878 if (err)
1879 return err;
1880
1881 bt_dev_info(hdev, "Intel firmware patch completed and deactivated");
1882
1883 complete:
1884 /* Set the event mask for Intel specific vendor events. This enables
1885 * a few extra events that are useful during general operation.
1886 */
1887 btintel_set_event_mask_mfg(hdev, false);
1888
1889 btintel_check_bdaddr(hdev);
1890 return 0;
1891 }
1892
inject_cmd_complete(struct hci_dev * hdev,__u16 opcode)1893 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1894 {
1895 struct sk_buff *skb;
1896 struct hci_event_hdr *hdr;
1897 struct hci_ev_cmd_complete *evt;
1898
1899 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
1900 if (!skb)
1901 return -ENOMEM;
1902
1903 hdr = skb_put(skb, sizeof(*hdr));
1904 hdr->evt = HCI_EV_CMD_COMPLETE;
1905 hdr->plen = sizeof(*evt) + 1;
1906
1907 evt = skb_put(skb, sizeof(*evt));
1908 evt->ncmd = 0x01;
1909 evt->opcode = cpu_to_le16(opcode);
1910
1911 skb_put_u8(skb, 0x00);
1912
1913 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
1914
1915 return hci_recv_frame(hdev, skb);
1916 }
1917
btusb_recv_bulk_intel(struct btusb_data * data,void * buffer,int count)1918 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1919 int count)
1920 {
1921 /* When the device is in bootloader mode, then it can send
1922 * events via the bulk endpoint. These events are treated the
1923 * same way as the ones received from the interrupt endpoint.
1924 */
1925 if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1926 return btusb_recv_intr(data, buffer, count);
1927
1928 return btusb_recv_bulk(data, buffer, count);
1929 }
1930
btusb_intel_bootup(struct btusb_data * data,const void * ptr,unsigned int len)1931 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1932 unsigned int len)
1933 {
1934 const struct intel_bootup *evt = ptr;
1935
1936 if (len != sizeof(*evt))
1937 return;
1938
1939 if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1940 smp_mb__after_atomic();
1941 wake_up_bit(&data->flags, BTUSB_BOOTING);
1942 }
1943 }
1944
btusb_intel_secure_send_result(struct btusb_data * data,const void * ptr,unsigned int len)1945 static void btusb_intel_secure_send_result(struct btusb_data *data,
1946 const void *ptr, unsigned int len)
1947 {
1948 const struct intel_secure_send_result *evt = ptr;
1949
1950 if (len != sizeof(*evt))
1951 return;
1952
1953 if (evt->result)
1954 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1955
1956 if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1957 test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1958 smp_mb__after_atomic();
1959 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1960 }
1961 }
1962
btusb_recv_event_intel(struct hci_dev * hdev,struct sk_buff * skb)1963 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1964 {
1965 struct btusb_data *data = hci_get_drvdata(hdev);
1966
1967 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1968 struct hci_event_hdr *hdr = (void *)skb->data;
1969
1970 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1971 hdr->plen > 0) {
1972 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1973 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1974
1975 switch (skb->data[2]) {
1976 case 0x02:
1977 /* When switching to the operational firmware
1978 * the device sends a vendor specific event
1979 * indicating that the bootup completed.
1980 */
1981 btusb_intel_bootup(data, ptr, len);
1982 break;
1983 case 0x06:
1984 /* When the firmware loading completes the
1985 * device sends out a vendor specific event
1986 * indicating the result of the firmware
1987 * loading.
1988 */
1989 btusb_intel_secure_send_result(data, ptr, len);
1990 break;
1991 }
1992 }
1993 }
1994
1995 return hci_recv_frame(hdev, skb);
1996 }
1997
btusb_send_frame_intel(struct hci_dev * hdev,struct sk_buff * skb)1998 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1999 {
2000 struct btusb_data *data = hci_get_drvdata(hdev);
2001 struct urb *urb;
2002
2003 BT_DBG("%s", hdev->name);
2004
2005 switch (hci_skb_pkt_type(skb)) {
2006 case HCI_COMMAND_PKT:
2007 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2008 struct hci_command_hdr *cmd = (void *)skb->data;
2009 __u16 opcode = le16_to_cpu(cmd->opcode);
2010
2011 /* When in bootloader mode and the command 0xfc09
2012 * is received, it needs to be send down the
2013 * bulk endpoint. So allocate a bulk URB instead.
2014 */
2015 if (opcode == 0xfc09)
2016 urb = alloc_bulk_urb(hdev, skb);
2017 else
2018 urb = alloc_ctrl_urb(hdev, skb);
2019
2020 /* When the 0xfc01 command is issued to boot into
2021 * the operational firmware, it will actually not
2022 * send a command complete event. To keep the flow
2023 * control working inject that event here.
2024 */
2025 if (opcode == 0xfc01)
2026 inject_cmd_complete(hdev, opcode);
2027 } else {
2028 urb = alloc_ctrl_urb(hdev, skb);
2029 }
2030 if (IS_ERR(urb))
2031 return PTR_ERR(urb);
2032
2033 hdev->stat.cmd_tx++;
2034 return submit_or_queue_tx_urb(hdev, urb);
2035
2036 case HCI_ACLDATA_PKT:
2037 urb = alloc_bulk_urb(hdev, skb);
2038 if (IS_ERR(urb))
2039 return PTR_ERR(urb);
2040
2041 hdev->stat.acl_tx++;
2042 return submit_or_queue_tx_urb(hdev, urb);
2043
2044 case HCI_SCODATA_PKT:
2045 if (hci_conn_num(hdev, SCO_LINK) < 1)
2046 return -ENODEV;
2047
2048 urb = alloc_isoc_urb(hdev, skb);
2049 if (IS_ERR(urb))
2050 return PTR_ERR(urb);
2051
2052 hdev->stat.sco_tx++;
2053 return submit_tx_urb(hdev, urb);
2054 }
2055
2056 return -EILSEQ;
2057 }
2058
btusb_setup_intel_new_get_fw_name(struct intel_version * ver,struct intel_boot_params * params,char * fw_name,size_t len,const char * suffix)2059 static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver,
2060 struct intel_boot_params *params,
2061 char *fw_name, size_t len,
2062 const char *suffix)
2063 {
2064 switch (ver->hw_variant) {
2065 case 0x0b: /* SfP */
2066 case 0x0c: /* WsP */
2067 snprintf(fw_name, len, "intel/ibt-%u-%u.%s",
2068 le16_to_cpu(ver->hw_variant),
2069 le16_to_cpu(params->dev_revid),
2070 suffix);
2071 break;
2072 case 0x11: /* JfP */
2073 case 0x12: /* ThP */
2074 case 0x13: /* HrP */
2075 case 0x14: /* CcP */
2076 snprintf(fw_name, len, "intel/ibt-%u-%u-%u.%s",
2077 le16_to_cpu(ver->hw_variant),
2078 le16_to_cpu(ver->hw_revision),
2079 le16_to_cpu(ver->fw_revision),
2080 suffix);
2081 break;
2082 default:
2083 return false;
2084 }
2085 return true;
2086 }
2087
btusb_setup_intel_new(struct hci_dev * hdev)2088 static int btusb_setup_intel_new(struct hci_dev *hdev)
2089 {
2090 struct btusb_data *data = hci_get_drvdata(hdev);
2091 struct intel_version ver;
2092 struct intel_boot_params params;
2093 const struct firmware *fw;
2094 u32 boot_param;
2095 char fwname[64];
2096 ktime_t calltime, delta, rettime;
2097 unsigned long long duration;
2098 int err;
2099
2100 BT_DBG("%s", hdev->name);
2101
2102 /* Set the default boot parameter to 0x0 and it is updated to
2103 * SKU specific boot parameter after reading Intel_Write_Boot_Params
2104 * command while downloading the firmware.
2105 */
2106 boot_param = 0x00000000;
2107
2108 calltime = ktime_get();
2109
2110 /* Read the Intel version information to determine if the device
2111 * is in bootloader mode or if it already has operational firmware
2112 * loaded.
2113 */
2114 err = btintel_read_version(hdev, &ver);
2115 if (err)
2116 return err;
2117
2118 /* The hardware platform number has a fixed value of 0x37 and
2119 * for now only accept this single value.
2120 */
2121 if (ver.hw_platform != 0x37) {
2122 bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)",
2123 ver.hw_platform);
2124 return -EINVAL;
2125 }
2126
2127 /* Check for supported iBT hardware variants of this firmware
2128 * loading method.
2129 *
2130 * This check has been put in place to ensure correct forward
2131 * compatibility options when newer hardware variants come along.
2132 */
2133 switch (ver.hw_variant) {
2134 case 0x0b: /* SfP */
2135 case 0x0c: /* WsP */
2136 case 0x11: /* JfP */
2137 case 0x12: /* ThP */
2138 case 0x13: /* HrP */
2139 case 0x14: /* CcP */
2140 break;
2141 default:
2142 bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",
2143 ver.hw_variant);
2144 return -EINVAL;
2145 }
2146
2147 btintel_version_info(hdev, &ver);
2148
2149 /* The firmware variant determines if the device is in bootloader
2150 * mode or is running operational firmware. The value 0x06 identifies
2151 * the bootloader and the value 0x23 identifies the operational
2152 * firmware.
2153 *
2154 * When the operational firmware is already present, then only
2155 * the check for valid Bluetooth device address is needed. This
2156 * determines if the device will be added as configured or
2157 * unconfigured controller.
2158 *
2159 * It is not possible to use the Secure Boot Parameters in this
2160 * case since that command is only available in bootloader mode.
2161 */
2162 if (ver.fw_variant == 0x23) {
2163 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2164 btintel_check_bdaddr(hdev);
2165 return 0;
2166 }
2167
2168 /* If the device is not in bootloader mode, then the only possible
2169 * choice is to return an error and abort the device initialization.
2170 */
2171 if (ver.fw_variant != 0x06) {
2172 bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)",
2173 ver.fw_variant);
2174 return -ENODEV;
2175 }
2176
2177 /* Read the secure boot parameters to identify the operating
2178 * details of the bootloader.
2179 */
2180 err = btintel_read_boot_params(hdev, ¶ms);
2181 if (err)
2182 return err;
2183
2184 /* It is required that every single firmware fragment is acknowledged
2185 * with a command complete event. If the boot parameters indicate
2186 * that this bootloader does not send them, then abort the setup.
2187 */
2188 if (params.limited_cce != 0x00) {
2189 bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",
2190 params.limited_cce);
2191 return -EINVAL;
2192 }
2193
2194 /* If the OTP has no valid Bluetooth device address, then there will
2195 * also be no valid address for the operational firmware.
2196 */
2197 if (!bacmp(¶ms.otp_bdaddr, BDADDR_ANY)) {
2198 bt_dev_info(hdev, "No device address configured");
2199 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2200 }
2201
2202 /* With this Intel bootloader only the hardware variant and device
2203 * revision information are used to select the right firmware for SfP
2204 * and WsP.
2205 *
2206 * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2207 *
2208 * Currently the supported hardware variants are:
2209 * 11 (0x0b) for iBT3.0 (LnP/SfP)
2210 * 12 (0x0c) for iBT3.5 (WsP)
2211 *
2212 * For ThP/JfP and for future SKU's, the FW name varies based on HW
2213 * variant, HW revision and FW revision, as these are dependent on CNVi
2214 * and RF Combination.
2215 *
2216 * 17 (0x11) for iBT3.5 (JfP)
2217 * 18 (0x12) for iBT3.5 (ThP)
2218 *
2219 * The firmware file name for these will be
2220 * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi.
2221 *
2222 */
2223 err = btusb_setup_intel_new_get_fw_name(&ver, ¶ms, fwname,
2224 sizeof(fwname), "sfi");
2225 if (!err) {
2226 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2227 return -EINVAL;
2228 }
2229
2230 err = request_firmware(&fw, fwname, &hdev->dev);
2231 if (err < 0) {
2232 bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err);
2233 return err;
2234 }
2235
2236 bt_dev_info(hdev, "Found device firmware: %s", fwname);
2237
2238 /* Save the DDC file name for later use to apply once the firmware
2239 * downloading is done.
2240 */
2241 err = btusb_setup_intel_new_get_fw_name(&ver, ¶ms, fwname,
2242 sizeof(fwname), "ddc");
2243 if (!err) {
2244 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2245 return -EINVAL;
2246 }
2247
2248 if (fw->size < 644) {
2249 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2250 fw->size);
2251 err = -EBADF;
2252 goto done;
2253 }
2254
2255 set_bit(BTUSB_DOWNLOADING, &data->flags);
2256
2257 /* Start firmware downloading and get boot parameter */
2258 err = btintel_download_firmware(hdev, fw, &boot_param);
2259 if (err < 0)
2260 goto done;
2261
2262 set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2263
2264 bt_dev_info(hdev, "Waiting for firmware download to complete");
2265
2266 /* Before switching the device into operational mode and with that
2267 * booting the loaded firmware, wait for the bootloader notification
2268 * that all fragments have been successfully received.
2269 *
2270 * When the event processing receives the notification, then the
2271 * BTUSB_DOWNLOADING flag will be cleared.
2272 *
2273 * The firmware loading should not take longer than 5 seconds
2274 * and thus just timeout if that happens and fail the setup
2275 * of this device.
2276 */
2277 err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2278 TASK_INTERRUPTIBLE,
2279 msecs_to_jiffies(5000));
2280 if (err == -EINTR) {
2281 bt_dev_err(hdev, "Firmware loading interrupted");
2282 goto done;
2283 }
2284
2285 if (err) {
2286 bt_dev_err(hdev, "Firmware loading timeout");
2287 err = -ETIMEDOUT;
2288 goto done;
2289 }
2290
2291 if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2292 bt_dev_err(hdev, "Firmware loading failed");
2293 err = -ENOEXEC;
2294 goto done;
2295 }
2296
2297 rettime = ktime_get();
2298 delta = ktime_sub(rettime, calltime);
2299 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2300
2301 bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2302
2303 done:
2304 release_firmware(fw);
2305
2306 if (err < 0)
2307 return err;
2308
2309 calltime = ktime_get();
2310
2311 set_bit(BTUSB_BOOTING, &data->flags);
2312
2313 err = btintel_send_intel_reset(hdev, boot_param);
2314 if (err)
2315 return err;
2316
2317 /* The bootloader will not indicate when the device is ready. This
2318 * is done by the operational firmware sending bootup notification.
2319 *
2320 * Booting into operational firmware should not take longer than
2321 * 1 second. However if that happens, then just fail the setup
2322 * since something went wrong.
2323 */
2324 bt_dev_info(hdev, "Waiting for device to boot");
2325
2326 err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2327 TASK_INTERRUPTIBLE,
2328 msecs_to_jiffies(1000));
2329
2330 if (err == -EINTR) {
2331 bt_dev_err(hdev, "Device boot interrupted");
2332 return -EINTR;
2333 }
2334
2335 if (err) {
2336 bt_dev_err(hdev, "Device boot timeout");
2337 return -ETIMEDOUT;
2338 }
2339
2340 rettime = ktime_get();
2341 delta = ktime_sub(rettime, calltime);
2342 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2343
2344 bt_dev_info(hdev, "Device booted in %llu usecs", duration);
2345
2346 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2347
2348 /* Once the device is running in operational mode, it needs to apply
2349 * the device configuration (DDC) parameters.
2350 *
2351 * The device can work without DDC parameters, so even if it fails
2352 * to load the file, no need to fail the setup.
2353 */
2354 btintel_load_ddc_config(hdev, fwname);
2355
2356 /* Set the event mask for Intel specific vendor events. This enables
2357 * a few extra events that are useful during general operation. It
2358 * does not enable any debugging related events.
2359 *
2360 * The device will function correctly without these events enabled
2361 * and thus no need to fail the setup.
2362 */
2363 btintel_set_event_mask(hdev, false);
2364
2365 return 0;
2366 }
2367
btusb_shutdown_intel(struct hci_dev * hdev)2368 static int btusb_shutdown_intel(struct hci_dev *hdev)
2369 {
2370 struct sk_buff *skb;
2371 long ret;
2372
2373 /* In the shutdown sequence where Bluetooth is turned off followed
2374 * by WiFi being turned off, turning WiFi back on causes issue with
2375 * the RF calibration.
2376 *
2377 * To ensure that any RF activity has been stopped, issue HCI Reset
2378 * command to clear all ongoing activity including advertising,
2379 * scanning etc.
2380 */
2381 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2382 if (IS_ERR(skb)) {
2383 ret = PTR_ERR(skb);
2384 bt_dev_err(hdev, "HCI reset during shutdown failed");
2385 return ret;
2386 }
2387 kfree_skb(skb);
2388
2389 /* Some platforms have an issue with BT LED when the interface is
2390 * down or BT radio is turned off, which takes 5 seconds to BT LED
2391 * goes off. This command turns off the BT LED immediately.
2392 */
2393 skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2394 if (IS_ERR(skb)) {
2395 ret = PTR_ERR(skb);
2396 bt_dev_err(hdev, "turning off Intel device LED failed");
2397 return ret;
2398 }
2399 kfree_skb(skb);
2400
2401 return 0;
2402 }
2403
2404 #ifdef CONFIG_PM
2405 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
marvell_config_oob_wake(struct hci_dev * hdev)2406 static int marvell_config_oob_wake(struct hci_dev *hdev)
2407 {
2408 struct sk_buff *skb;
2409 struct btusb_data *data = hci_get_drvdata(hdev);
2410 struct device *dev = &data->udev->dev;
2411 u16 pin, gap, opcode;
2412 int ret;
2413 u8 cmd[5];
2414
2415 /* Move on if no wakeup pin specified */
2416 if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
2417 of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
2418 return 0;
2419
2420 /* Vendor specific command to configure a GPIO as wake-up pin */
2421 opcode = hci_opcode_pack(0x3F, 0x59);
2422 cmd[0] = opcode & 0xFF;
2423 cmd[1] = opcode >> 8;
2424 cmd[2] = 2; /* length of parameters that follow */
2425 cmd[3] = pin;
2426 cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
2427
2428 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
2429 if (!skb) {
2430 bt_dev_err(hdev, "%s: No memory\n", __func__);
2431 return -ENOMEM;
2432 }
2433
2434 skb_put_data(skb, cmd, sizeof(cmd));
2435 hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
2436
2437 ret = btusb_send_frame(hdev, skb);
2438 if (ret) {
2439 bt_dev_err(hdev, "%s: configuration failed\n", __func__);
2440 kfree_skb(skb);
2441 return ret;
2442 }
2443
2444 return 0;
2445 }
2446 #endif
2447
btusb_set_bdaddr_marvell(struct hci_dev * hdev,const bdaddr_t * bdaddr)2448 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2449 const bdaddr_t *bdaddr)
2450 {
2451 struct sk_buff *skb;
2452 u8 buf[8];
2453 long ret;
2454
2455 buf[0] = 0xfe;
2456 buf[1] = sizeof(bdaddr_t);
2457 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2458
2459 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2460 if (IS_ERR(skb)) {
2461 ret = PTR_ERR(skb);
2462 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
2463 ret);
2464 return ret;
2465 }
2466 kfree_skb(skb);
2467
2468 return 0;
2469 }
2470
btusb_set_bdaddr_ath3012(struct hci_dev * hdev,const bdaddr_t * bdaddr)2471 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2472 const bdaddr_t *bdaddr)
2473 {
2474 struct sk_buff *skb;
2475 u8 buf[10];
2476 long ret;
2477
2478 buf[0] = 0x01;
2479 buf[1] = 0x01;
2480 buf[2] = 0x00;
2481 buf[3] = sizeof(bdaddr_t);
2482 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2483
2484 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2485 if (IS_ERR(skb)) {
2486 ret = PTR_ERR(skb);
2487 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
2488 return ret;
2489 }
2490 kfree_skb(skb);
2491
2492 return 0;
2493 }
2494
2495 #define QCA_DFU_PACKET_LEN 4096
2496
2497 #define QCA_GET_TARGET_VERSION 0x09
2498 #define QCA_CHECK_STATUS 0x05
2499 #define QCA_DFU_DOWNLOAD 0x01
2500
2501 #define QCA_SYSCFG_UPDATED 0x40
2502 #define QCA_PATCH_UPDATED 0x80
2503 #define QCA_DFU_TIMEOUT 3000
2504
2505 struct qca_version {
2506 __le32 rom_version;
2507 __le32 patch_version;
2508 __le32 ram_version;
2509 __le32 ref_clock;
2510 __u8 reserved[4];
2511 } __packed;
2512
2513 struct qca_rampatch_version {
2514 __le16 rom_version;
2515 __le16 patch_version;
2516 } __packed;
2517
2518 struct qca_device_info {
2519 u32 rom_version;
2520 u8 rampatch_hdr; /* length of header in rampatch */
2521 u8 nvm_hdr; /* length of header in NVM */
2522 u8 ver_offset; /* offset of version structure in rampatch */
2523 };
2524
2525 static const struct qca_device_info qca_devices_table[] = {
2526 { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2527 { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2528 { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2529 { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2530 { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2531 { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2532 };
2533
btusb_qca_send_vendor_req(struct usb_device * udev,u8 request,void * data,u16 size)2534 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
2535 void *data, u16 size)
2536 {
2537 int pipe, err;
2538 u8 *buf;
2539
2540 buf = kmalloc(size, GFP_KERNEL);
2541 if (!buf)
2542 return -ENOMEM;
2543
2544 /* Found some of USB hosts have IOT issues with ours so that we should
2545 * not wait until HCI layer is ready.
2546 */
2547 pipe = usb_rcvctrlpipe(udev, 0);
2548 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2549 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2550 if (err < 0) {
2551 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
2552 goto done;
2553 }
2554
2555 memcpy(data, buf, size);
2556
2557 done:
2558 kfree(buf);
2559
2560 return err;
2561 }
2562
btusb_setup_qca_download_fw(struct hci_dev * hdev,const struct firmware * firmware,size_t hdr_size)2563 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2564 const struct firmware *firmware,
2565 size_t hdr_size)
2566 {
2567 struct btusb_data *btdata = hci_get_drvdata(hdev);
2568 struct usb_device *udev = btdata->udev;
2569 size_t count, size, sent = 0;
2570 int pipe, len, err;
2571 u8 *buf;
2572
2573 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2574 if (!buf)
2575 return -ENOMEM;
2576
2577 count = firmware->size;
2578
2579 size = min_t(size_t, count, hdr_size);
2580 memcpy(buf, firmware->data, size);
2581
2582 /* USB patches should go down to controller through USB path
2583 * because binary format fits to go down through USB channel.
2584 * USB control path is for patching headers and USB bulk is for
2585 * patch body.
2586 */
2587 pipe = usb_sndctrlpipe(udev, 0);
2588 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2589 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2590 if (err < 0) {
2591 bt_dev_err(hdev, "Failed to send headers (%d)", err);
2592 goto done;
2593 }
2594
2595 sent += size;
2596 count -= size;
2597
2598 /* ep2 need time to switch from function acl to function dfu,
2599 * so we add 20ms delay here.
2600 */
2601 msleep(20);
2602
2603 while (count) {
2604 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2605
2606 memcpy(buf, firmware->data + sent, size);
2607
2608 pipe = usb_sndbulkpipe(udev, 0x02);
2609 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2610 QCA_DFU_TIMEOUT);
2611 if (err < 0) {
2612 bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
2613 sent, firmware->size, err);
2614 break;
2615 }
2616
2617 if (size != len) {
2618 bt_dev_err(hdev, "Failed to get bulk buffer");
2619 err = -EILSEQ;
2620 break;
2621 }
2622
2623 sent += size;
2624 count -= size;
2625 }
2626
2627 done:
2628 kfree(buf);
2629 return err;
2630 }
2631
btusb_setup_qca_load_rampatch(struct hci_dev * hdev,struct qca_version * ver,const struct qca_device_info * info)2632 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2633 struct qca_version *ver,
2634 const struct qca_device_info *info)
2635 {
2636 struct qca_rampatch_version *rver;
2637 const struct firmware *fw;
2638 u32 ver_rom, ver_patch;
2639 u16 rver_rom, rver_patch;
2640 char fwname[64];
2641 int err;
2642
2643 ver_rom = le32_to_cpu(ver->rom_version);
2644 ver_patch = le32_to_cpu(ver->patch_version);
2645
2646 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2647
2648 err = request_firmware(&fw, fwname, &hdev->dev);
2649 if (err) {
2650 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
2651 fwname, err);
2652 return err;
2653 }
2654
2655 bt_dev_info(hdev, "using rampatch file: %s", fwname);
2656
2657 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2658 rver_rom = le16_to_cpu(rver->rom_version);
2659 rver_patch = le16_to_cpu(rver->patch_version);
2660
2661 bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
2662 "firmware rome 0x%x build 0x%x",
2663 rver_rom, rver_patch, ver_rom, ver_patch);
2664
2665 if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2666 bt_dev_err(hdev, "rampatch file version did not match with firmware");
2667 err = -EINVAL;
2668 goto done;
2669 }
2670
2671 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2672
2673 done:
2674 release_firmware(fw);
2675
2676 return err;
2677 }
2678
btusb_setup_qca_load_nvm(struct hci_dev * hdev,struct qca_version * ver,const struct qca_device_info * info)2679 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2680 struct qca_version *ver,
2681 const struct qca_device_info *info)
2682 {
2683 const struct firmware *fw;
2684 char fwname[64];
2685 int err;
2686
2687 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2688 le32_to_cpu(ver->rom_version));
2689
2690 err = request_firmware(&fw, fwname, &hdev->dev);
2691 if (err) {
2692 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
2693 fwname, err);
2694 return err;
2695 }
2696
2697 bt_dev_info(hdev, "using NVM file: %s", fwname);
2698
2699 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2700
2701 release_firmware(fw);
2702
2703 return err;
2704 }
2705
2706 /* identify the ROM version and check whether patches are needed */
btusb_qca_need_patch(struct usb_device * udev)2707 static bool btusb_qca_need_patch(struct usb_device *udev)
2708 {
2709 struct qca_version ver;
2710
2711 if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
2712 sizeof(ver)) < 0)
2713 return false;
2714 /* only low ROM versions need patches */
2715 return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
2716 }
2717
btusb_setup_qca(struct hci_dev * hdev)2718 static int btusb_setup_qca(struct hci_dev *hdev)
2719 {
2720 struct btusb_data *btdata = hci_get_drvdata(hdev);
2721 struct usb_device *udev = btdata->udev;
2722 const struct qca_device_info *info = NULL;
2723 struct qca_version ver;
2724 u32 ver_rom;
2725 u8 status;
2726 int i, err;
2727
2728 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
2729 sizeof(ver));
2730 if (err < 0)
2731 return err;
2732
2733 ver_rom = le32_to_cpu(ver.rom_version);
2734 /* Don't care about high ROM versions */
2735 if (ver_rom & ~0xffffU)
2736 return 0;
2737
2738 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2739 if (ver_rom == qca_devices_table[i].rom_version)
2740 info = &qca_devices_table[i];
2741 }
2742 if (!info) {
2743 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
2744 return -ENODEV;
2745 }
2746
2747 err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
2748 sizeof(status));
2749 if (err < 0)
2750 return err;
2751
2752 if (!(status & QCA_PATCH_UPDATED)) {
2753 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2754 if (err < 0)
2755 return err;
2756 }
2757
2758 if (!(status & QCA_SYSCFG_UPDATED)) {
2759 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2760 if (err < 0)
2761 return err;
2762 }
2763
2764 return 0;
2765 }
2766
2767 #ifdef CONFIG_BT_HCIBTUSB_BCM
__set_diag_interface(struct hci_dev * hdev)2768 static inline int __set_diag_interface(struct hci_dev *hdev)
2769 {
2770 struct btusb_data *data = hci_get_drvdata(hdev);
2771 struct usb_interface *intf = data->diag;
2772 int i;
2773
2774 if (!data->diag)
2775 return -ENODEV;
2776
2777 data->diag_tx_ep = NULL;
2778 data->diag_rx_ep = NULL;
2779
2780 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2781 struct usb_endpoint_descriptor *ep_desc;
2782
2783 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2784
2785 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2786 data->diag_tx_ep = ep_desc;
2787 continue;
2788 }
2789
2790 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2791 data->diag_rx_ep = ep_desc;
2792 continue;
2793 }
2794 }
2795
2796 if (!data->diag_tx_ep || !data->diag_rx_ep) {
2797 bt_dev_err(hdev, "invalid diagnostic descriptors");
2798 return -ENODEV;
2799 }
2800
2801 return 0;
2802 }
2803
alloc_diag_urb(struct hci_dev * hdev,bool enable)2804 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
2805 {
2806 struct btusb_data *data = hci_get_drvdata(hdev);
2807 struct sk_buff *skb;
2808 struct urb *urb;
2809 unsigned int pipe;
2810
2811 if (!data->diag_tx_ep)
2812 return ERR_PTR(-ENODEV);
2813
2814 urb = usb_alloc_urb(0, GFP_KERNEL);
2815 if (!urb)
2816 return ERR_PTR(-ENOMEM);
2817
2818 skb = bt_skb_alloc(2, GFP_KERNEL);
2819 if (!skb) {
2820 usb_free_urb(urb);
2821 return ERR_PTR(-ENOMEM);
2822 }
2823
2824 skb_put_u8(skb, 0xf0);
2825 skb_put_u8(skb, enable);
2826
2827 pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
2828
2829 usb_fill_bulk_urb(urb, data->udev, pipe,
2830 skb->data, skb->len, btusb_tx_complete, skb);
2831
2832 skb->dev = (void *)hdev;
2833
2834 return urb;
2835 }
2836
btusb_bcm_set_diag(struct hci_dev * hdev,bool enable)2837 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
2838 {
2839 struct btusb_data *data = hci_get_drvdata(hdev);
2840 struct urb *urb;
2841
2842 if (!data->diag)
2843 return -ENODEV;
2844
2845 if (!test_bit(HCI_RUNNING, &hdev->flags))
2846 return -ENETDOWN;
2847
2848 urb = alloc_diag_urb(hdev, enable);
2849 if (IS_ERR(urb))
2850 return PTR_ERR(urb);
2851
2852 return submit_or_queue_tx_urb(hdev, urb);
2853 }
2854 #endif
2855
2856 #ifdef CONFIG_PM
btusb_oob_wake_handler(int irq,void * priv)2857 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
2858 {
2859 struct btusb_data *data = priv;
2860
2861 pm_wakeup_event(&data->udev->dev, 0);
2862 pm_system_wakeup();
2863
2864 /* Disable only if not already disabled (keep it balanced) */
2865 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
2866 disable_irq_nosync(irq);
2867 disable_irq_wake(irq);
2868 }
2869 return IRQ_HANDLED;
2870 }
2871
2872 static const struct of_device_id btusb_match_table[] = {
2873 { .compatible = "usb1286,204e" },
2874 { }
2875 };
2876 MODULE_DEVICE_TABLE(of, btusb_match_table);
2877
2878 /* Use an oob wakeup pin? */
btusb_config_oob_wake(struct hci_dev * hdev)2879 static int btusb_config_oob_wake(struct hci_dev *hdev)
2880 {
2881 struct btusb_data *data = hci_get_drvdata(hdev);
2882 struct device *dev = &data->udev->dev;
2883 int irq, ret;
2884
2885 clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
2886
2887 if (!of_match_device(btusb_match_table, dev))
2888 return 0;
2889
2890 /* Move on if no IRQ specified */
2891 irq = of_irq_get_byname(dev->of_node, "wakeup");
2892 if (irq <= 0) {
2893 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
2894 return 0;
2895 }
2896
2897 irq_set_status_flags(irq, IRQ_NOAUTOEN);
2898 ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
2899 0, "OOB Wake-on-BT", data);
2900 if (ret) {
2901 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
2902 return ret;
2903 }
2904
2905 ret = device_init_wakeup(dev, true);
2906 if (ret) {
2907 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
2908 return ret;
2909 }
2910
2911 data->oob_wake_irq = irq;
2912 bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
2913 return 0;
2914 }
2915 #endif
2916
btusb_check_needs_reset_resume(struct usb_interface * intf)2917 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
2918 {
2919 if (dmi_check_system(btusb_needs_reset_resume_table))
2920 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
2921 }
2922
btusb_probe(struct usb_interface * intf,const struct usb_device_id * id)2923 static int btusb_probe(struct usb_interface *intf,
2924 const struct usb_device_id *id)
2925 {
2926 struct usb_endpoint_descriptor *ep_desc;
2927 struct btusb_data *data;
2928 struct hci_dev *hdev;
2929 unsigned ifnum_base;
2930 int i, err;
2931
2932 BT_DBG("intf %p id %p", intf, id);
2933
2934 /* interface numbers are hardcoded in the spec */
2935 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
2936 if (!(id->driver_info & BTUSB_IFNUM_2))
2937 return -ENODEV;
2938 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
2939 return -ENODEV;
2940 }
2941
2942 ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
2943
2944 if (!id->driver_info) {
2945 const struct usb_device_id *match;
2946
2947 match = usb_match_id(intf, blacklist_table);
2948 if (match)
2949 id = match;
2950 }
2951
2952 if (id->driver_info == BTUSB_IGNORE)
2953 return -ENODEV;
2954
2955 if (id->driver_info & BTUSB_ATH3012) {
2956 struct usb_device *udev = interface_to_usbdev(intf);
2957
2958 /* Old firmware would otherwise let ath3k driver load
2959 * patch and sysconfig files
2960 */
2961 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
2962 !btusb_qca_need_patch(udev))
2963 return -ENODEV;
2964 }
2965
2966 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2967 if (!data)
2968 return -ENOMEM;
2969
2970 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2971 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2972
2973 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2974 data->intr_ep = ep_desc;
2975 continue;
2976 }
2977
2978 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2979 data->bulk_tx_ep = ep_desc;
2980 continue;
2981 }
2982
2983 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2984 data->bulk_rx_ep = ep_desc;
2985 continue;
2986 }
2987 }
2988
2989 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2990 return -ENODEV;
2991
2992 if (id->driver_info & BTUSB_AMP) {
2993 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2994 data->cmdreq = 0x2b;
2995 } else {
2996 data->cmdreq_type = USB_TYPE_CLASS;
2997 data->cmdreq = 0x00;
2998 }
2999
3000 data->udev = interface_to_usbdev(intf);
3001 data->intf = intf;
3002
3003 INIT_WORK(&data->work, btusb_work);
3004 INIT_WORK(&data->waker, btusb_waker);
3005 init_usb_anchor(&data->deferred);
3006 init_usb_anchor(&data->tx_anchor);
3007 spin_lock_init(&data->txlock);
3008
3009 init_usb_anchor(&data->intr_anchor);
3010 init_usb_anchor(&data->bulk_anchor);
3011 init_usb_anchor(&data->isoc_anchor);
3012 init_usb_anchor(&data->diag_anchor);
3013 spin_lock_init(&data->rxlock);
3014
3015 if (id->driver_info & BTUSB_INTEL_NEW) {
3016 data->recv_event = btusb_recv_event_intel;
3017 data->recv_bulk = btusb_recv_bulk_intel;
3018 set_bit(BTUSB_BOOTLOADER, &data->flags);
3019 } else {
3020 data->recv_event = hci_recv_frame;
3021 data->recv_bulk = btusb_recv_bulk;
3022 }
3023
3024 hdev = hci_alloc_dev();
3025 if (!hdev)
3026 return -ENOMEM;
3027
3028 hdev->bus = HCI_USB;
3029 hci_set_drvdata(hdev, data);
3030
3031 if (id->driver_info & BTUSB_AMP)
3032 hdev->dev_type = HCI_AMP;
3033 else
3034 hdev->dev_type = HCI_PRIMARY;
3035
3036 data->hdev = hdev;
3037
3038 SET_HCIDEV_DEV(hdev, &intf->dev);
3039
3040 hdev->open = btusb_open;
3041 hdev->close = btusb_close;
3042 hdev->flush = btusb_flush;
3043 hdev->send = btusb_send_frame;
3044 hdev->notify = btusb_notify;
3045
3046 #ifdef CONFIG_PM
3047 err = btusb_config_oob_wake(hdev);
3048 if (err)
3049 goto out_free_dev;
3050
3051 /* Marvell devices may need a specific chip configuration */
3052 if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
3053 err = marvell_config_oob_wake(hdev);
3054 if (err)
3055 goto out_free_dev;
3056 }
3057 #endif
3058 if (id->driver_info & BTUSB_CW6622)
3059 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3060
3061 if (id->driver_info & BTUSB_BCM2045)
3062 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3063
3064 if (id->driver_info & BTUSB_BCM92035)
3065 hdev->setup = btusb_setup_bcm92035;
3066
3067 #ifdef CONFIG_BT_HCIBTUSB_BCM
3068 if (id->driver_info & BTUSB_BCM_PATCHRAM) {
3069 hdev->manufacturer = 15;
3070 hdev->setup = btbcm_setup_patchram;
3071 hdev->set_diag = btusb_bcm_set_diag;
3072 hdev->set_bdaddr = btbcm_set_bdaddr;
3073
3074 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3075 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3076 }
3077
3078 if (id->driver_info & BTUSB_BCM_APPLE) {
3079 hdev->manufacturer = 15;
3080 hdev->setup = btbcm_setup_apple;
3081 hdev->set_diag = btusb_bcm_set_diag;
3082
3083 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3084 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3085 }
3086 #endif
3087
3088 if (id->driver_info & BTUSB_INTEL) {
3089 hdev->manufacturer = 2;
3090 hdev->setup = btusb_setup_intel;
3091 hdev->shutdown = btusb_shutdown_intel;
3092 hdev->set_diag = btintel_set_diag_mfg;
3093 hdev->set_bdaddr = btintel_set_bdaddr;
3094 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3095 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3096 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3097 }
3098
3099 if (id->driver_info & BTUSB_INTEL_NEW) {
3100 hdev->manufacturer = 2;
3101 hdev->send = btusb_send_frame_intel;
3102 hdev->setup = btusb_setup_intel_new;
3103 hdev->hw_error = btintel_hw_error;
3104 hdev->set_diag = btintel_set_diag;
3105 hdev->set_bdaddr = btintel_set_bdaddr;
3106 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3107 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3108 }
3109
3110 if (id->driver_info & BTUSB_MARVELL)
3111 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3112
3113 if (id->driver_info & BTUSB_SWAVE) {
3114 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3115 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3116 }
3117
3118 if (id->driver_info & BTUSB_INTEL_BOOT) {
3119 hdev->manufacturer = 2;
3120 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3121 }
3122
3123 if (id->driver_info & BTUSB_ATH3012) {
3124 data->setup_on_usb = btusb_setup_qca;
3125 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3126 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3127 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3128 }
3129
3130 if (id->driver_info & BTUSB_QCA_ROME) {
3131 data->setup_on_usb = btusb_setup_qca;
3132 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3133 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3134 btusb_check_needs_reset_resume(intf);
3135 }
3136
3137 #ifdef CONFIG_BT_HCIBTUSB_RTL
3138 if (id->driver_info & BTUSB_REALTEK) {
3139 hdev->setup = btrtl_setup_realtek;
3140 hdev->shutdown = btrtl_shutdown_realtek;
3141
3142 /* Realtek devices lose their updated firmware over suspend,
3143 * but the USB hub doesn't notice any status change.
3144 * Explicitly request a device reset on resume.
3145 */
3146 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3147 }
3148 #endif
3149
3150 if (id->driver_info & BTUSB_AMP) {
3151 /* AMP controllers do not support SCO packets */
3152 data->isoc = NULL;
3153 } else {
3154 /* Interface orders are hardcoded in the specification */
3155 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
3156 data->isoc_ifnum = ifnum_base + 1;
3157 }
3158
3159 if (!reset)
3160 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3161
3162 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3163 if (!disable_scofix)
3164 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3165 }
3166
3167 if (id->driver_info & BTUSB_BROKEN_ISOC)
3168 data->isoc = NULL;
3169
3170 if (id->driver_info & BTUSB_DIGIANSWER) {
3171 data->cmdreq_type = USB_TYPE_VENDOR;
3172 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3173 }
3174
3175 if (id->driver_info & BTUSB_CSR) {
3176 struct usb_device *udev = data->udev;
3177 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3178
3179 /* Old firmware would otherwise execute USB reset */
3180 if (bcdDevice < 0x117)
3181 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3182
3183 /* Fake CSR devices with broken commands */
3184 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3185 hdev->setup = btusb_setup_csr;
3186
3187 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3188 }
3189
3190 if (id->driver_info & BTUSB_SNIFFER) {
3191 struct usb_device *udev = data->udev;
3192
3193 /* New sniffer firmware has crippled HCI interface */
3194 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3195 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3196 }
3197
3198 if (id->driver_info & BTUSB_INTEL_BOOT) {
3199 /* A bug in the bootloader causes that interrupt interface is
3200 * only enabled after receiving SetInterface(0, AltSetting=0).
3201 */
3202 err = usb_set_interface(data->udev, 0, 0);
3203 if (err < 0) {
3204 BT_ERR("failed to set interface 0, alt 0 %d", err);
3205 goto out_free_dev;
3206 }
3207 }
3208
3209 if (data->isoc) {
3210 err = usb_driver_claim_interface(&btusb_driver,
3211 data->isoc, data);
3212 if (err < 0)
3213 goto out_free_dev;
3214 }
3215
3216 #ifdef CONFIG_BT_HCIBTUSB_BCM
3217 if (data->diag) {
3218 if (!usb_driver_claim_interface(&btusb_driver,
3219 data->diag, data))
3220 __set_diag_interface(hdev);
3221 else
3222 data->diag = NULL;
3223 }
3224 #endif
3225
3226 if (enable_autosuspend)
3227 usb_enable_autosuspend(data->udev);
3228
3229 err = hci_register_dev(hdev);
3230 if (err < 0)
3231 goto out_free_dev;
3232
3233 usb_set_intfdata(intf, data);
3234
3235 return 0;
3236
3237 out_free_dev:
3238 hci_free_dev(hdev);
3239 return err;
3240 }
3241
btusb_disconnect(struct usb_interface * intf)3242 static void btusb_disconnect(struct usb_interface *intf)
3243 {
3244 struct btusb_data *data = usb_get_intfdata(intf);
3245 struct hci_dev *hdev;
3246
3247 BT_DBG("intf %p", intf);
3248
3249 if (!data)
3250 return;
3251
3252 hdev = data->hdev;
3253 usb_set_intfdata(data->intf, NULL);
3254
3255 if (data->isoc)
3256 usb_set_intfdata(data->isoc, NULL);
3257
3258 if (data->diag)
3259 usb_set_intfdata(data->diag, NULL);
3260
3261 hci_unregister_dev(hdev);
3262
3263 if (intf == data->intf) {
3264 if (data->isoc)
3265 usb_driver_release_interface(&btusb_driver, data->isoc);
3266 if (data->diag)
3267 usb_driver_release_interface(&btusb_driver, data->diag);
3268 } else if (intf == data->isoc) {
3269 if (data->diag)
3270 usb_driver_release_interface(&btusb_driver, data->diag);
3271 usb_driver_release_interface(&btusb_driver, data->intf);
3272 } else if (intf == data->diag) {
3273 usb_driver_release_interface(&btusb_driver, data->intf);
3274 if (data->isoc)
3275 usb_driver_release_interface(&btusb_driver, data->isoc);
3276 }
3277
3278 if (data->oob_wake_irq)
3279 device_init_wakeup(&data->udev->dev, false);
3280
3281 hci_free_dev(hdev);
3282 }
3283
3284 #ifdef CONFIG_PM
btusb_suspend(struct usb_interface * intf,pm_message_t message)3285 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3286 {
3287 struct btusb_data *data = usb_get_intfdata(intf);
3288
3289 BT_DBG("intf %p", intf);
3290
3291 if (data->suspend_count++)
3292 return 0;
3293
3294 spin_lock_irq(&data->txlock);
3295 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3296 set_bit(BTUSB_SUSPENDING, &data->flags);
3297 spin_unlock_irq(&data->txlock);
3298 } else {
3299 spin_unlock_irq(&data->txlock);
3300 data->suspend_count--;
3301 return -EBUSY;
3302 }
3303
3304 cancel_work_sync(&data->work);
3305
3306 btusb_stop_traffic(data);
3307 usb_kill_anchored_urbs(&data->tx_anchor);
3308
3309 if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
3310 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3311 enable_irq_wake(data->oob_wake_irq);
3312 enable_irq(data->oob_wake_irq);
3313 }
3314
3315 return 0;
3316 }
3317
play_deferred(struct btusb_data * data)3318 static void play_deferred(struct btusb_data *data)
3319 {
3320 struct urb *urb;
3321 int err;
3322
3323 while ((urb = usb_get_from_anchor(&data->deferred))) {
3324 usb_anchor_urb(urb, &data->tx_anchor);
3325
3326 err = usb_submit_urb(urb, GFP_ATOMIC);
3327 if (err < 0) {
3328 if (err != -EPERM && err != -ENODEV)
3329 BT_ERR("%s urb %p submission failed (%d)",
3330 data->hdev->name, urb, -err);
3331 kfree(urb->setup_packet);
3332 usb_unanchor_urb(urb);
3333 usb_free_urb(urb);
3334 break;
3335 }
3336
3337 data->tx_in_flight++;
3338 usb_free_urb(urb);
3339 }
3340
3341 /* Cleanup the rest deferred urbs. */
3342 while ((urb = usb_get_from_anchor(&data->deferred))) {
3343 kfree(urb->setup_packet);
3344 usb_free_urb(urb);
3345 }
3346 }
3347
btusb_resume(struct usb_interface * intf)3348 static int btusb_resume(struct usb_interface *intf)
3349 {
3350 struct btusb_data *data = usb_get_intfdata(intf);
3351 struct hci_dev *hdev = data->hdev;
3352 int err = 0;
3353
3354 BT_DBG("intf %p", intf);
3355
3356 if (--data->suspend_count)
3357 return 0;
3358
3359 /* Disable only if not already disabled (keep it balanced) */
3360 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3361 disable_irq(data->oob_wake_irq);
3362 disable_irq_wake(data->oob_wake_irq);
3363 }
3364
3365 if (!test_bit(HCI_RUNNING, &hdev->flags))
3366 goto done;
3367
3368 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3369 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3370 if (err < 0) {
3371 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3372 goto failed;
3373 }
3374 }
3375
3376 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3377 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3378 if (err < 0) {
3379 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3380 goto failed;
3381 }
3382
3383 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3384 }
3385
3386 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3387 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3388 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3389 else
3390 btusb_submit_isoc_urb(hdev, GFP_NOIO);
3391 }
3392
3393 spin_lock_irq(&data->txlock);
3394 play_deferred(data);
3395 clear_bit(BTUSB_SUSPENDING, &data->flags);
3396 spin_unlock_irq(&data->txlock);
3397 schedule_work(&data->work);
3398
3399 return 0;
3400
3401 failed:
3402 usb_scuttle_anchored_urbs(&data->deferred);
3403 done:
3404 spin_lock_irq(&data->txlock);
3405 clear_bit(BTUSB_SUSPENDING, &data->flags);
3406 spin_unlock_irq(&data->txlock);
3407
3408 return err;
3409 }
3410 #endif
3411
3412 static struct usb_driver btusb_driver = {
3413 .name = "btusb",
3414 .probe = btusb_probe,
3415 .disconnect = btusb_disconnect,
3416 #ifdef CONFIG_PM
3417 .suspend = btusb_suspend,
3418 .resume = btusb_resume,
3419 #endif
3420 .id_table = btusb_table,
3421 .supports_autosuspend = 1,
3422 .disable_hub_initiated_lpm = 1,
3423 };
3424
3425 module_usb_driver(btusb_driver);
3426
3427 module_param(disable_scofix, bool, 0644);
3428 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3429
3430 module_param(force_scofix, bool, 0644);
3431 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3432
3433 module_param(enable_autosuspend, bool, 0644);
3434 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
3435
3436 module_param(reset, bool, 0644);
3437 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3438
3439 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3440 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3441 MODULE_VERSION(VERSION);
3442 MODULE_LICENSE("GPL");
3443