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