1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 *
4 * Generic Bluetooth USB driver
5 *
6 * Copyright (C) 2005-2008 Marcel Holtmann <marcel@holtmann.org>
7 */
8
9 #include <linux/dmi.h>
10 #include <linux/module.h>
11 #include <linux/usb.h>
12 #include <linux/usb/quirks.h>
13 #include <linux/firmware.h>
14 #include <linux/iopoll.h>
15 #include <linux/of_device.h>
16 #include <linux/of_irq.h>
17 #include <linux/suspend.h>
18 #include <linux/gpio/consumer.h>
19 #include <asm/unaligned.h>
20
21 #include <net/bluetooth/bluetooth.h>
22 #include <net/bluetooth/hci_core.h>
23
24 #include "btintel.h"
25 #include "btbcm.h"
26 #include "btrtl.h"
27
28 #define VERSION "0.8"
29
30 static bool disable_scofix;
31 static bool force_scofix;
32 static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND);
33
34 static bool reset = true;
35
36 static struct usb_driver btusb_driver;
37
38 #define BTUSB_IGNORE 0x01
39 #define BTUSB_DIGIANSWER 0x02
40 #define BTUSB_CSR 0x04
41 #define BTUSB_SNIFFER 0x08
42 #define BTUSB_BCM92035 0x10
43 #define BTUSB_BROKEN_ISOC 0x20
44 #define BTUSB_WRONG_SCO_MTU 0x40
45 #define BTUSB_ATH3012 0x80
46 #define BTUSB_INTEL 0x100
47 #define BTUSB_INTEL_BOOT 0x200
48 #define BTUSB_BCM_PATCHRAM 0x400
49 #define BTUSB_MARVELL 0x800
50 #define BTUSB_SWAVE 0x1000
51 #define BTUSB_INTEL_NEW 0x2000
52 #define BTUSB_AMP 0x4000
53 #define BTUSB_QCA_ROME 0x8000
54 #define BTUSB_BCM_APPLE 0x10000
55 #define BTUSB_REALTEK 0x20000
56 #define BTUSB_BCM2045 0x40000
57 #define BTUSB_IFNUM_2 0x80000
58 #define BTUSB_CW6622 0x100000
59 #define BTUSB_MEDIATEK 0x200000
60 #define BTUSB_WIDEBAND_SPEECH 0x400000
61 #define BTUSB_VALID_LE_STATES 0x800000
62 #define BTUSB_QCA_WCN6855 0x1000000
63
64 static const struct usb_device_id btusb_table[] = {
65 /* Generic Bluetooth USB device */
66 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
67
68 /* Generic Bluetooth AMP device */
69 { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
70
71 /* Generic Bluetooth USB interface */
72 { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
73
74 /* Apple-specific (Broadcom) devices */
75 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
76 .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
77
78 /* MediaTek MT76x0E */
79 { USB_DEVICE(0x0e8d, 0x763f) },
80
81 /* Broadcom SoftSailing reporting vendor specific */
82 { USB_DEVICE(0x0a5c, 0x21e1) },
83
84 /* Apple MacBookPro 7,1 */
85 { USB_DEVICE(0x05ac, 0x8213) },
86
87 /* Apple iMac11,1 */
88 { USB_DEVICE(0x05ac, 0x8215) },
89
90 /* Apple MacBookPro6,2 */
91 { USB_DEVICE(0x05ac, 0x8218) },
92
93 /* Apple MacBookAir3,1, MacBookAir3,2 */
94 { USB_DEVICE(0x05ac, 0x821b) },
95
96 /* Apple MacBookAir4,1 */
97 { USB_DEVICE(0x05ac, 0x821f) },
98
99 /* Apple MacBookPro8,2 */
100 { USB_DEVICE(0x05ac, 0x821a) },
101
102 /* Apple MacMini5,1 */
103 { USB_DEVICE(0x05ac, 0x8281) },
104
105 /* AVM BlueFRITZ! USB v2.0 */
106 { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
107
108 /* Bluetooth Ultraport Module from IBM */
109 { USB_DEVICE(0x04bf, 0x030a) },
110
111 /* ALPS Modules with non-standard id */
112 { USB_DEVICE(0x044e, 0x3001) },
113 { USB_DEVICE(0x044e, 0x3002) },
114
115 /* Ericsson with non-standard id */
116 { USB_DEVICE(0x0bdb, 0x1002) },
117
118 /* Canyon CN-BTU1 with HID interfaces */
119 { USB_DEVICE(0x0c10, 0x0000) },
120
121 /* Broadcom BCM20702A0 */
122 { USB_DEVICE(0x413c, 0x8197) },
123
124 /* Broadcom BCM20702B0 (Dynex/Insignia) */
125 { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
126
127 /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
128 { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01),
129 .driver_info = BTUSB_BCM_PATCHRAM },
130
131 /* Broadcom BCM920703 (HTC Vive) */
132 { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
133 .driver_info = BTUSB_BCM_PATCHRAM },
134
135 /* Foxconn - Hon Hai */
136 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
137 .driver_info = BTUSB_BCM_PATCHRAM },
138
139 /* Lite-On Technology - Broadcom based */
140 { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
141 .driver_info = BTUSB_BCM_PATCHRAM },
142
143 /* Broadcom devices with vendor specific id */
144 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
145 .driver_info = BTUSB_BCM_PATCHRAM },
146
147 /* ASUSTek Computer - Broadcom based */
148 { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
149 .driver_info = BTUSB_BCM_PATCHRAM },
150
151 /* Belkin F8065bf - Broadcom based */
152 { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
153 .driver_info = BTUSB_BCM_PATCHRAM },
154
155 /* IMC Networks - Broadcom based */
156 { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
157 .driver_info = BTUSB_BCM_PATCHRAM },
158
159 /* Dell Computer - Broadcom based */
160 { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
161 .driver_info = BTUSB_BCM_PATCHRAM },
162
163 /* Toshiba Corp - Broadcom based */
164 { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
165 .driver_info = BTUSB_BCM_PATCHRAM },
166
167 /* Intel Bluetooth USB Bootloader (RAM module) */
168 { USB_DEVICE(0x8087, 0x0a5a),
169 .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
170
171 { } /* Terminating entry */
172 };
173
174 MODULE_DEVICE_TABLE(usb, btusb_table);
175
176 static const struct usb_device_id blacklist_table[] = {
177 /* CSR BlueCore devices */
178 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
179
180 /* Broadcom BCM2033 without firmware */
181 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
182
183 /* Broadcom BCM2045 devices */
184 { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
185
186 /* Atheros 3011 with sflash firmware */
187 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
188 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
189 { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
190 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
191 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
192 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
193 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
194
195 /* Atheros AR9285 Malbec with sflash firmware */
196 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
197
198 /* Atheros 3012 with sflash firmware */
199 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
200 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
201 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
202 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
203 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
204 { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
205 { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
206 { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
207 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
208 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
209 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
210 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
211 { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
212 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
213 { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
214 { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
215 { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
216 { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
217 { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
218 { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
219 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
220 { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
221 { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
222 { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
223 { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
224 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
225 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
226 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
227 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
228 { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
229 { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
230 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
231 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
232 { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
233 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
234 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
235 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
236 { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
237 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
238 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
239 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
240 { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
241 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
242 { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
243 { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
244 { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
245 { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
246 { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
247 { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
248 { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
249
250 /* Atheros AR5BBU12 with sflash firmware */
251 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
252
253 /* Atheros AR5BBU12 with sflash firmware */
254 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
255 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
256
257 /* QCA ROME chipset */
258 { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME |
259 BTUSB_WIDEBAND_SPEECH },
260 { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME |
261 BTUSB_WIDEBAND_SPEECH },
262 { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME |
263 BTUSB_WIDEBAND_SPEECH },
264 { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME |
265 BTUSB_WIDEBAND_SPEECH },
266 { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME |
267 BTUSB_WIDEBAND_SPEECH },
268 { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME |
269 BTUSB_WIDEBAND_SPEECH },
270 { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME |
271 BTUSB_WIDEBAND_SPEECH },
272 { USB_DEVICE(0x0cf3, 0xe500), .driver_info = BTUSB_QCA_ROME |
273 BTUSB_WIDEBAND_SPEECH },
274 { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME |
275 BTUSB_WIDEBAND_SPEECH },
276 { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME |
277 BTUSB_WIDEBAND_SPEECH },
278 { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME |
279 BTUSB_WIDEBAND_SPEECH },
280 { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME |
281 BTUSB_WIDEBAND_SPEECH },
282 { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME |
283 BTUSB_WIDEBAND_SPEECH },
284 { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME |
285 BTUSB_WIDEBAND_SPEECH },
286 { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME |
287 BTUSB_WIDEBAND_SPEECH },
288 { USB_DEVICE(0x04ca, 0x3021), .driver_info = BTUSB_QCA_ROME |
289 BTUSB_WIDEBAND_SPEECH },
290 { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME |
291 BTUSB_WIDEBAND_SPEECH },
292 { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME |
293 BTUSB_WIDEBAND_SPEECH },
294 { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME |
295 BTUSB_WIDEBAND_SPEECH },
296
297 /* QCA WCN6855 chipset */
298 { USB_DEVICE(0x0cf3, 0xe600), .driver_info = BTUSB_QCA_WCN6855 |
299 BTUSB_WIDEBAND_SPEECH },
300
301 /* Broadcom BCM2035 */
302 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
303 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
304 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
305
306 /* Broadcom BCM2045 */
307 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
308 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
309
310 /* IBM/Lenovo ThinkPad with Broadcom chip */
311 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
312 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
313
314 /* HP laptop with Broadcom chip */
315 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
316
317 /* Dell laptop with Broadcom chip */
318 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
319
320 /* Dell Wireless 370 and 410 devices */
321 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
322 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
323
324 /* Belkin F8T012 and F8T013 devices */
325 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
326 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
327
328 /* Asus WL-BTD202 device */
329 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
330
331 /* Kensington Bluetooth USB adapter */
332 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
333
334 /* RTX Telecom based adapters with buggy SCO support */
335 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
336 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
337
338 /* CONWISE Technology based adapters with buggy SCO support */
339 { USB_DEVICE(0x0e5e, 0x6622),
340 .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
341
342 /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
343 { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
344
345 /* Digianswer devices */
346 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
347 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
348
349 /* CSR BlueCore Bluetooth Sniffer */
350 { USB_DEVICE(0x0a12, 0x0002),
351 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
352
353 /* Frontline ComProbe Bluetooth Sniffer */
354 { USB_DEVICE(0x16d3, 0x0002),
355 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
356
357 /* Marvell Bluetooth devices */
358 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
359 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
360 { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
361
362 /* Intel Bluetooth devices */
363 { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW |
364 BTUSB_WIDEBAND_SPEECH |
365 BTUSB_VALID_LE_STATES },
366 { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_NEW |
367 BTUSB_WIDEBAND_SPEECH },
368 { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_NEW |
369 BTUSB_WIDEBAND_SPEECH },
370 { USB_DEVICE(0x8087, 0x0032), .driver_info = BTUSB_INTEL_NEW |
371 BTUSB_WIDEBAND_SPEECH},
372 { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
373 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
374 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
375 { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW |
376 BTUSB_WIDEBAND_SPEECH },
377 { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL |
378 BTUSB_WIDEBAND_SPEECH },
379 { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW |
380 BTUSB_WIDEBAND_SPEECH |
381 BTUSB_VALID_LE_STATES },
382 { USB_DEVICE(0x10ab, 0x9309), .driver_info = BTUSB_QCA_WCN6855 |
383 BTUSB_WIDEBAND_SPEECH |
384 BTUSB_VALID_LE_STATES },
385 { USB_DEVICE(0x10ab, 0x9409), .driver_info = BTUSB_QCA_WCN6855 |
386 BTUSB_WIDEBAND_SPEECH |
387 BTUSB_VALID_LE_STATES },
388 { USB_DEVICE(0x0489, 0xe0d0), .driver_info = BTUSB_QCA_WCN6855 |
389 BTUSB_WIDEBAND_SPEECH |
390 BTUSB_VALID_LE_STATES },
391
392 /* Other Intel Bluetooth devices */
393 { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
394 .driver_info = BTUSB_IGNORE },
395
396 /* Realtek 8822CE Bluetooth devices */
397 { USB_DEVICE(0x0bda, 0xb00c), .driver_info = BTUSB_REALTEK |
398 BTUSB_WIDEBAND_SPEECH },
399 { USB_DEVICE(0x0bda, 0xc822), .driver_info = BTUSB_REALTEK |
400 BTUSB_WIDEBAND_SPEECH },
401
402 /* Realtek 8852CE Bluetooth devices */
403 { USB_DEVICE(0x04ca, 0x4007), .driver_info = BTUSB_REALTEK |
404 BTUSB_WIDEBAND_SPEECH },
405 { USB_DEVICE(0x04c5, 0x1675), .driver_info = BTUSB_REALTEK |
406 BTUSB_WIDEBAND_SPEECH },
407 { USB_DEVICE(0x0cb8, 0xc558), .driver_info = BTUSB_REALTEK |
408 BTUSB_WIDEBAND_SPEECH },
409 { USB_DEVICE(0x13d3, 0x3587), .driver_info = BTUSB_REALTEK |
410 BTUSB_WIDEBAND_SPEECH },
411 { USB_DEVICE(0x13d3, 0x3586), .driver_info = BTUSB_REALTEK |
412 BTUSB_WIDEBAND_SPEECH },
413
414 /* Realtek Bluetooth devices */
415 { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
416 .driver_info = BTUSB_REALTEK },
417
418 /* MediaTek Bluetooth devices */
419 { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01),
420 .driver_info = BTUSB_MEDIATEK |
421 BTUSB_WIDEBAND_SPEECH |
422 BTUSB_VALID_LE_STATES },
423
424 /* MediaTek MT7922A Bluetooth devices */
425 { USB_DEVICE(0x0489, 0xe0d8), .driver_info = BTUSB_MEDIATEK |
426 BTUSB_WIDEBAND_SPEECH |
427 BTUSB_VALID_LE_STATES },
428 { USB_DEVICE(0x0489, 0xe0d9), .driver_info = BTUSB_MEDIATEK |
429 BTUSB_WIDEBAND_SPEECH |
430 BTUSB_VALID_LE_STATES },
431 { USB_DEVICE(0x13d3, 0x3568), .driver_info = BTUSB_MEDIATEK |
432 BTUSB_WIDEBAND_SPEECH |
433 BTUSB_VALID_LE_STATES },
434
435 /* Additional Realtek 8723AE Bluetooth devices */
436 { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
437 { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
438
439 /* Additional Realtek 8723BE Bluetooth devices */
440 { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
441 { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
442 { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
443 { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
444 { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
445 { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
446
447 /* Additional Realtek 8723BU Bluetooth devices */
448 { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
449
450 /* Additional Realtek 8723DE Bluetooth devices */
451 { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
452 { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
453
454 /* Additional Realtek 8821AE Bluetooth devices */
455 { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
456 { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
457 { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
458 { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
459 { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
460
461 /* Additional Realtek 8822BE Bluetooth devices */
462 { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
463 { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
464
465 /* Additional Realtek 8822CE Bluetooth devices */
466 { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK },
467 { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK },
468
469 /* Silicon Wave based devices */
470 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
471
472 { } /* Terminating entry */
473 };
474
475 /* The Bluetooth USB module build into some devices needs to be reset on resume,
476 * this is a problem with the platform (likely shutting off all power) not with
477 * the module itself. So we use a DMI list to match known broken platforms.
478 */
479 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
480 {
481 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
482 .matches = {
483 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
484 DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
485 },
486 },
487 {
488 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
489 .matches = {
490 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
491 DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
492 },
493 },
494 {
495 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
496 .matches = {
497 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
498 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
499 },
500 },
501 {}
502 };
503
504 #define BTUSB_MAX_ISOC_FRAMES 10
505
506 #define BTUSB_INTR_RUNNING 0
507 #define BTUSB_BULK_RUNNING 1
508 #define BTUSB_ISOC_RUNNING 2
509 #define BTUSB_SUSPENDING 3
510 #define BTUSB_DID_ISO_RESUME 4
511 #define BTUSB_BOOTLOADER 5
512 #define BTUSB_DOWNLOADING 6
513 #define BTUSB_FIRMWARE_LOADED 7
514 #define BTUSB_FIRMWARE_FAILED 8
515 #define BTUSB_BOOTING 9
516 #define BTUSB_DIAG_RUNNING 10
517 #define BTUSB_OOB_WAKE_ENABLED 11
518 #define BTUSB_HW_RESET_ACTIVE 12
519 #define BTUSB_TX_WAIT_VND_EVT 13
520 #define BTUSB_WAKEUP_DISABLE 14
521 #define BTUSB_USE_ALT3_FOR_WBS 15
522
523 struct btusb_data {
524 struct hci_dev *hdev;
525 struct usb_device *udev;
526 struct usb_interface *intf;
527 struct usb_interface *isoc;
528 struct usb_interface *diag;
529 unsigned isoc_ifnum;
530
531 unsigned long flags;
532
533 struct work_struct work;
534 struct work_struct waker;
535
536 struct usb_anchor deferred;
537 struct usb_anchor tx_anchor;
538 int tx_in_flight;
539 spinlock_t txlock;
540
541 struct usb_anchor intr_anchor;
542 struct usb_anchor bulk_anchor;
543 struct usb_anchor isoc_anchor;
544 struct usb_anchor diag_anchor;
545 struct usb_anchor ctrl_anchor;
546 spinlock_t rxlock;
547
548 struct sk_buff *evt_skb;
549 struct sk_buff *acl_skb;
550 struct sk_buff *sco_skb;
551
552 struct usb_endpoint_descriptor *intr_ep;
553 struct usb_endpoint_descriptor *bulk_tx_ep;
554 struct usb_endpoint_descriptor *bulk_rx_ep;
555 struct usb_endpoint_descriptor *isoc_tx_ep;
556 struct usb_endpoint_descriptor *isoc_rx_ep;
557 struct usb_endpoint_descriptor *diag_tx_ep;
558 struct usb_endpoint_descriptor *diag_rx_ep;
559
560 struct gpio_desc *reset_gpio;
561
562 __u8 cmdreq_type;
563 __u8 cmdreq;
564
565 unsigned int sco_num;
566 unsigned int air_mode;
567 bool usb_alt6_packet_flow;
568 int isoc_altsetting;
569 int suspend_count;
570
571 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
572 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
573
574 int (*setup_on_usb)(struct hci_dev *hdev);
575
576 int oob_wake_irq; /* irq for out-of-band wake-on-bt */
577 unsigned cmd_timeout_cnt;
578 };
579
btusb_intel_cmd_timeout(struct hci_dev * hdev)580 static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
581 {
582 struct btusb_data *data = hci_get_drvdata(hdev);
583 struct gpio_desc *reset_gpio = data->reset_gpio;
584
585 if (++data->cmd_timeout_cnt < 5)
586 return;
587
588 if (!reset_gpio) {
589 bt_dev_err(hdev, "No way to reset. Ignoring and continuing");
590 return;
591 }
592
593 /*
594 * Toggle the hard reset line if the platform provides one. The reset
595 * is going to yank the device off the USB and then replug. So doing
596 * once is enough. The cleanup is handled correctly on the way out
597 * (standard USB disconnect), and the new device is detected cleanly
598 * and bound to the driver again like it should be.
599 */
600 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
601 bt_dev_err(hdev, "last reset failed? Not resetting again");
602 return;
603 }
604
605 bt_dev_err(hdev, "Initiating HW reset via gpio");
606 gpiod_set_value_cansleep(reset_gpio, 1);
607 msleep(100);
608 gpiod_set_value_cansleep(reset_gpio, 0);
609 }
610
btusb_rtl_cmd_timeout(struct hci_dev * hdev)611 static void btusb_rtl_cmd_timeout(struct hci_dev *hdev)
612 {
613 struct btusb_data *data = hci_get_drvdata(hdev);
614 struct gpio_desc *reset_gpio = data->reset_gpio;
615
616 if (++data->cmd_timeout_cnt < 5)
617 return;
618
619 if (!reset_gpio) {
620 bt_dev_err(hdev, "No gpio to reset Realtek device, ignoring");
621 return;
622 }
623
624 /* Toggle the hard reset line. The Realtek device is going to
625 * yank itself off the USB and then replug. The cleanup is handled
626 * correctly on the way out (standard USB disconnect), and the new
627 * device is detected cleanly and bound to the driver again like
628 * it should be.
629 */
630 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
631 bt_dev_err(hdev, "last reset failed? Not resetting again");
632 return;
633 }
634
635 bt_dev_err(hdev, "Reset Realtek device via gpio");
636 gpiod_set_value_cansleep(reset_gpio, 1);
637 msleep(200);
638 gpiod_set_value_cansleep(reset_gpio, 0);
639 }
640
btusb_qca_cmd_timeout(struct hci_dev * hdev)641 static void btusb_qca_cmd_timeout(struct hci_dev *hdev)
642 {
643 struct btusb_data *data = hci_get_drvdata(hdev);
644 int err;
645
646 if (++data->cmd_timeout_cnt < 5)
647 return;
648
649 bt_dev_err(hdev, "Multiple cmd timeouts seen. Resetting usb device.");
650 /* This is not an unbalanced PM reference since the device will reset */
651 err = usb_autopm_get_interface(data->intf);
652 if (!err)
653 usb_queue_reset_device(data->intf);
654 else
655 bt_dev_err(hdev, "Failed usb_autopm_get_interface with %d", err);
656 }
657
btusb_free_frags(struct btusb_data * data)658 static inline void btusb_free_frags(struct btusb_data *data)
659 {
660 unsigned long flags;
661
662 spin_lock_irqsave(&data->rxlock, flags);
663
664 dev_kfree_skb_irq(data->evt_skb);
665 data->evt_skb = NULL;
666
667 dev_kfree_skb_irq(data->acl_skb);
668 data->acl_skb = NULL;
669
670 dev_kfree_skb_irq(data->sco_skb);
671 data->sco_skb = NULL;
672
673 spin_unlock_irqrestore(&data->rxlock, flags);
674 }
675
btusb_recv_intr(struct btusb_data * data,void * buffer,int count)676 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
677 {
678 struct sk_buff *skb;
679 unsigned long flags;
680 int err = 0;
681
682 spin_lock_irqsave(&data->rxlock, flags);
683 skb = data->evt_skb;
684
685 while (count) {
686 int len;
687
688 if (!skb) {
689 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
690 if (!skb) {
691 err = -ENOMEM;
692 break;
693 }
694
695 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
696 hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
697 }
698
699 len = min_t(uint, hci_skb_expect(skb), count);
700 skb_put_data(skb, buffer, len);
701
702 count -= len;
703 buffer += len;
704 hci_skb_expect(skb) -= len;
705
706 if (skb->len == HCI_EVENT_HDR_SIZE) {
707 /* Complete event header */
708 hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
709
710 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
711 kfree_skb(skb);
712 skb = NULL;
713
714 err = -EILSEQ;
715 break;
716 }
717 }
718
719 if (!hci_skb_expect(skb)) {
720 /* Complete frame */
721 data->recv_event(data->hdev, skb);
722 skb = NULL;
723 }
724 }
725
726 data->evt_skb = skb;
727 spin_unlock_irqrestore(&data->rxlock, flags);
728
729 return err;
730 }
731
btusb_recv_bulk(struct btusb_data * data,void * buffer,int count)732 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
733 {
734 struct sk_buff *skb;
735 unsigned long flags;
736 int err = 0;
737
738 spin_lock_irqsave(&data->rxlock, flags);
739 skb = data->acl_skb;
740
741 while (count) {
742 int len;
743
744 if (!skb) {
745 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
746 if (!skb) {
747 err = -ENOMEM;
748 break;
749 }
750
751 hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
752 hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
753 }
754
755 len = min_t(uint, hci_skb_expect(skb), count);
756 skb_put_data(skb, buffer, len);
757
758 count -= len;
759 buffer += len;
760 hci_skb_expect(skb) -= len;
761
762 if (skb->len == HCI_ACL_HDR_SIZE) {
763 __le16 dlen = hci_acl_hdr(skb)->dlen;
764
765 /* Complete ACL header */
766 hci_skb_expect(skb) = __le16_to_cpu(dlen);
767
768 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
769 kfree_skb(skb);
770 skb = NULL;
771
772 err = -EILSEQ;
773 break;
774 }
775 }
776
777 if (!hci_skb_expect(skb)) {
778 /* Complete frame */
779 hci_recv_frame(data->hdev, skb);
780 skb = NULL;
781 }
782 }
783
784 data->acl_skb = skb;
785 spin_unlock_irqrestore(&data->rxlock, flags);
786
787 return err;
788 }
789
btusb_recv_isoc(struct btusb_data * data,void * buffer,int count)790 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
791 {
792 struct sk_buff *skb;
793 unsigned long flags;
794 int err = 0;
795
796 spin_lock_irqsave(&data->rxlock, flags);
797 skb = data->sco_skb;
798
799 while (count) {
800 int len;
801
802 if (!skb) {
803 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
804 if (!skb) {
805 err = -ENOMEM;
806 break;
807 }
808
809 hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
810 hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
811 }
812
813 len = min_t(uint, hci_skb_expect(skb), count);
814 skb_put_data(skb, buffer, len);
815
816 count -= len;
817 buffer += len;
818 hci_skb_expect(skb) -= len;
819
820 if (skb->len == HCI_SCO_HDR_SIZE) {
821 /* Complete SCO header */
822 hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
823
824 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
825 kfree_skb(skb);
826 skb = NULL;
827
828 err = -EILSEQ;
829 break;
830 }
831 }
832
833 if (!hci_skb_expect(skb)) {
834 /* Complete frame */
835 hci_recv_frame(data->hdev, skb);
836 skb = NULL;
837 }
838 }
839
840 data->sco_skb = skb;
841 spin_unlock_irqrestore(&data->rxlock, flags);
842
843 return err;
844 }
845
btusb_intr_complete(struct urb * urb)846 static void btusb_intr_complete(struct urb *urb)
847 {
848 struct hci_dev *hdev = urb->context;
849 struct btusb_data *data = hci_get_drvdata(hdev);
850 int err;
851
852 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
853 urb->actual_length);
854
855 if (!test_bit(HCI_RUNNING, &hdev->flags))
856 return;
857
858 if (urb->status == 0) {
859 hdev->stat.byte_rx += urb->actual_length;
860
861 if (btusb_recv_intr(data, urb->transfer_buffer,
862 urb->actual_length) < 0) {
863 bt_dev_err(hdev, "corrupted event packet");
864 hdev->stat.err_rx++;
865 }
866 } else if (urb->status == -ENOENT) {
867 /* Avoid suspend failed when usb_kill_urb */
868 return;
869 }
870
871 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
872 return;
873
874 usb_mark_last_busy(data->udev);
875 usb_anchor_urb(urb, &data->intr_anchor);
876
877 err = usb_submit_urb(urb, GFP_ATOMIC);
878 if (err < 0) {
879 /* -EPERM: urb is being killed;
880 * -ENODEV: device got disconnected
881 */
882 if (err != -EPERM && err != -ENODEV)
883 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
884 urb, -err);
885 usb_unanchor_urb(urb);
886 }
887 }
888
btusb_submit_intr_urb(struct hci_dev * hdev,gfp_t mem_flags)889 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
890 {
891 struct btusb_data *data = hci_get_drvdata(hdev);
892 struct urb *urb;
893 unsigned char *buf;
894 unsigned int pipe;
895 int err, size;
896
897 BT_DBG("%s", hdev->name);
898
899 if (!data->intr_ep)
900 return -ENODEV;
901
902 urb = usb_alloc_urb(0, mem_flags);
903 if (!urb)
904 return -ENOMEM;
905
906 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
907
908 buf = kmalloc(size, mem_flags);
909 if (!buf) {
910 usb_free_urb(urb);
911 return -ENOMEM;
912 }
913
914 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
915
916 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
917 btusb_intr_complete, hdev, data->intr_ep->bInterval);
918
919 urb->transfer_flags |= URB_FREE_BUFFER;
920
921 usb_anchor_urb(urb, &data->intr_anchor);
922
923 err = usb_submit_urb(urb, mem_flags);
924 if (err < 0) {
925 if (err != -EPERM && err != -ENODEV)
926 bt_dev_err(hdev, "urb %p submission failed (%d)",
927 urb, -err);
928 usb_unanchor_urb(urb);
929 }
930
931 usb_free_urb(urb);
932
933 return err;
934 }
935
btusb_bulk_complete(struct urb * urb)936 static void btusb_bulk_complete(struct urb *urb)
937 {
938 struct hci_dev *hdev = urb->context;
939 struct btusb_data *data = hci_get_drvdata(hdev);
940 int err;
941
942 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
943 urb->actual_length);
944
945 if (!test_bit(HCI_RUNNING, &hdev->flags))
946 return;
947
948 if (urb->status == 0) {
949 hdev->stat.byte_rx += urb->actual_length;
950
951 if (data->recv_bulk(data, urb->transfer_buffer,
952 urb->actual_length) < 0) {
953 bt_dev_err(hdev, "corrupted ACL packet");
954 hdev->stat.err_rx++;
955 }
956 } else if (urb->status == -ENOENT) {
957 /* Avoid suspend failed when usb_kill_urb */
958 return;
959 }
960
961 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
962 return;
963
964 usb_anchor_urb(urb, &data->bulk_anchor);
965 usb_mark_last_busy(data->udev);
966
967 err = usb_submit_urb(urb, GFP_ATOMIC);
968 if (err < 0) {
969 /* -EPERM: urb is being killed;
970 * -ENODEV: device got disconnected
971 */
972 if (err != -EPERM && err != -ENODEV)
973 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
974 urb, -err);
975 usb_unanchor_urb(urb);
976 }
977 }
978
btusb_submit_bulk_urb(struct hci_dev * hdev,gfp_t mem_flags)979 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
980 {
981 struct btusb_data *data = hci_get_drvdata(hdev);
982 struct urb *urb;
983 unsigned char *buf;
984 unsigned int pipe;
985 int err, size = HCI_MAX_FRAME_SIZE;
986
987 BT_DBG("%s", hdev->name);
988
989 if (!data->bulk_rx_ep)
990 return -ENODEV;
991
992 urb = usb_alloc_urb(0, mem_flags);
993 if (!urb)
994 return -ENOMEM;
995
996 buf = kmalloc(size, mem_flags);
997 if (!buf) {
998 usb_free_urb(urb);
999 return -ENOMEM;
1000 }
1001
1002 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
1003
1004 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1005 btusb_bulk_complete, hdev);
1006
1007 urb->transfer_flags |= URB_FREE_BUFFER;
1008
1009 usb_mark_last_busy(data->udev);
1010 usb_anchor_urb(urb, &data->bulk_anchor);
1011
1012 err = usb_submit_urb(urb, mem_flags);
1013 if (err < 0) {
1014 if (err != -EPERM && err != -ENODEV)
1015 bt_dev_err(hdev, "urb %p submission failed (%d)",
1016 urb, -err);
1017 usb_unanchor_urb(urb);
1018 }
1019
1020 usb_free_urb(urb);
1021
1022 return err;
1023 }
1024
btusb_isoc_complete(struct urb * urb)1025 static void btusb_isoc_complete(struct urb *urb)
1026 {
1027 struct hci_dev *hdev = urb->context;
1028 struct btusb_data *data = hci_get_drvdata(hdev);
1029 int i, err;
1030
1031 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1032 urb->actual_length);
1033
1034 if (!test_bit(HCI_RUNNING, &hdev->flags))
1035 return;
1036
1037 if (urb->status == 0) {
1038 for (i = 0; i < urb->number_of_packets; i++) {
1039 unsigned int offset = urb->iso_frame_desc[i].offset;
1040 unsigned int length = urb->iso_frame_desc[i].actual_length;
1041
1042 if (urb->iso_frame_desc[i].status)
1043 continue;
1044
1045 hdev->stat.byte_rx += length;
1046
1047 if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
1048 length) < 0) {
1049 bt_dev_err(hdev, "corrupted SCO packet");
1050 hdev->stat.err_rx++;
1051 }
1052 }
1053 } else if (urb->status == -ENOENT) {
1054 /* Avoid suspend failed when usb_kill_urb */
1055 return;
1056 }
1057
1058 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
1059 return;
1060
1061 usb_anchor_urb(urb, &data->isoc_anchor);
1062
1063 err = usb_submit_urb(urb, GFP_ATOMIC);
1064 if (err < 0) {
1065 /* -EPERM: urb is being killed;
1066 * -ENODEV: device got disconnected
1067 */
1068 if (err != -EPERM && err != -ENODEV)
1069 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1070 urb, -err);
1071 usb_unanchor_urb(urb);
1072 }
1073 }
1074
__fill_isoc_descriptor_msbc(struct urb * urb,int len,int mtu,struct btusb_data * data)1075 static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len,
1076 int mtu, struct btusb_data *data)
1077 {
1078 int i, offset = 0;
1079 unsigned int interval;
1080
1081 BT_DBG("len %d mtu %d", len, mtu);
1082
1083 /* For mSBC ALT 6 setting the host will send the packet at continuous
1084 * flow. As per core spec 5, vol 4, part B, table 2.1. For ALT setting
1085 * 6 the HCI PACKET INTERVAL should be 7.5ms for every usb packets.
1086 * To maintain the rate we send 63bytes of usb packets alternatively for
1087 * 7ms and 8ms to maintain the rate as 7.5ms.
1088 */
1089 if (data->usb_alt6_packet_flow) {
1090 interval = 7;
1091 data->usb_alt6_packet_flow = false;
1092 } else {
1093 interval = 6;
1094 data->usb_alt6_packet_flow = true;
1095 }
1096
1097 for (i = 0; i < interval; i++) {
1098 urb->iso_frame_desc[i].offset = offset;
1099 urb->iso_frame_desc[i].length = offset;
1100 }
1101
1102 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1103 urb->iso_frame_desc[i].offset = offset;
1104 urb->iso_frame_desc[i].length = len;
1105 i++;
1106 }
1107
1108 urb->number_of_packets = i;
1109 }
1110
__fill_isoc_descriptor(struct urb * urb,int len,int mtu)1111 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
1112 {
1113 int i, offset = 0;
1114
1115 BT_DBG("len %d mtu %d", len, mtu);
1116
1117 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
1118 i++, offset += mtu, len -= mtu) {
1119 urb->iso_frame_desc[i].offset = offset;
1120 urb->iso_frame_desc[i].length = mtu;
1121 }
1122
1123 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1124 urb->iso_frame_desc[i].offset = offset;
1125 urb->iso_frame_desc[i].length = len;
1126 i++;
1127 }
1128
1129 urb->number_of_packets = i;
1130 }
1131
btusb_submit_isoc_urb(struct hci_dev * hdev,gfp_t mem_flags)1132 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
1133 {
1134 struct btusb_data *data = hci_get_drvdata(hdev);
1135 struct urb *urb;
1136 unsigned char *buf;
1137 unsigned int pipe;
1138 int err, size;
1139
1140 BT_DBG("%s", hdev->name);
1141
1142 if (!data->isoc_rx_ep)
1143 return -ENODEV;
1144
1145 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
1146 if (!urb)
1147 return -ENOMEM;
1148
1149 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
1150 BTUSB_MAX_ISOC_FRAMES;
1151
1152 buf = kmalloc(size, mem_flags);
1153 if (!buf) {
1154 usb_free_urb(urb);
1155 return -ENOMEM;
1156 }
1157
1158 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
1159
1160 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
1161 hdev, data->isoc_rx_ep->bInterval);
1162
1163 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
1164
1165 __fill_isoc_descriptor(urb, size,
1166 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
1167
1168 usb_anchor_urb(urb, &data->isoc_anchor);
1169
1170 err = usb_submit_urb(urb, mem_flags);
1171 if (err < 0) {
1172 if (err != -EPERM && err != -ENODEV)
1173 bt_dev_err(hdev, "urb %p submission failed (%d)",
1174 urb, -err);
1175 usb_unanchor_urb(urb);
1176 }
1177
1178 usb_free_urb(urb);
1179
1180 return err;
1181 }
1182
btusb_diag_complete(struct urb * urb)1183 static void btusb_diag_complete(struct urb *urb)
1184 {
1185 struct hci_dev *hdev = urb->context;
1186 struct btusb_data *data = hci_get_drvdata(hdev);
1187 int err;
1188
1189 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1190 urb->actual_length);
1191
1192 if (urb->status == 0) {
1193 struct sk_buff *skb;
1194
1195 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1196 if (skb) {
1197 skb_put_data(skb, urb->transfer_buffer,
1198 urb->actual_length);
1199 hci_recv_diag(hdev, skb);
1200 }
1201 } else if (urb->status == -ENOENT) {
1202 /* Avoid suspend failed when usb_kill_urb */
1203 return;
1204 }
1205
1206 if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1207 return;
1208
1209 usb_anchor_urb(urb, &data->diag_anchor);
1210 usb_mark_last_busy(data->udev);
1211
1212 err = usb_submit_urb(urb, GFP_ATOMIC);
1213 if (err < 0) {
1214 /* -EPERM: urb is being killed;
1215 * -ENODEV: device got disconnected
1216 */
1217 if (err != -EPERM && err != -ENODEV)
1218 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1219 urb, -err);
1220 usb_unanchor_urb(urb);
1221 }
1222 }
1223
btusb_submit_diag_urb(struct hci_dev * hdev,gfp_t mem_flags)1224 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1225 {
1226 struct btusb_data *data = hci_get_drvdata(hdev);
1227 struct urb *urb;
1228 unsigned char *buf;
1229 unsigned int pipe;
1230 int err, size = HCI_MAX_FRAME_SIZE;
1231
1232 BT_DBG("%s", hdev->name);
1233
1234 if (!data->diag_rx_ep)
1235 return -ENODEV;
1236
1237 urb = usb_alloc_urb(0, mem_flags);
1238 if (!urb)
1239 return -ENOMEM;
1240
1241 buf = kmalloc(size, mem_flags);
1242 if (!buf) {
1243 usb_free_urb(urb);
1244 return -ENOMEM;
1245 }
1246
1247 pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1248
1249 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1250 btusb_diag_complete, hdev);
1251
1252 urb->transfer_flags |= URB_FREE_BUFFER;
1253
1254 usb_mark_last_busy(data->udev);
1255 usb_anchor_urb(urb, &data->diag_anchor);
1256
1257 err = usb_submit_urb(urb, mem_flags);
1258 if (err < 0) {
1259 if (err != -EPERM && err != -ENODEV)
1260 bt_dev_err(hdev, "urb %p submission failed (%d)",
1261 urb, -err);
1262 usb_unanchor_urb(urb);
1263 }
1264
1265 usb_free_urb(urb);
1266
1267 return err;
1268 }
1269
btusb_tx_complete(struct urb * urb)1270 static void btusb_tx_complete(struct urb *urb)
1271 {
1272 struct sk_buff *skb = urb->context;
1273 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1274 struct btusb_data *data = hci_get_drvdata(hdev);
1275 unsigned long flags;
1276
1277 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1278 urb->actual_length);
1279
1280 if (!test_bit(HCI_RUNNING, &hdev->flags))
1281 goto done;
1282
1283 if (!urb->status)
1284 hdev->stat.byte_tx += urb->transfer_buffer_length;
1285 else
1286 hdev->stat.err_tx++;
1287
1288 done:
1289 spin_lock_irqsave(&data->txlock, flags);
1290 data->tx_in_flight--;
1291 spin_unlock_irqrestore(&data->txlock, flags);
1292
1293 kfree(urb->setup_packet);
1294
1295 kfree_skb(skb);
1296 }
1297
btusb_isoc_tx_complete(struct urb * urb)1298 static void btusb_isoc_tx_complete(struct urb *urb)
1299 {
1300 struct sk_buff *skb = urb->context;
1301 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1302
1303 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1304 urb->actual_length);
1305
1306 if (!test_bit(HCI_RUNNING, &hdev->flags))
1307 goto done;
1308
1309 if (!urb->status)
1310 hdev->stat.byte_tx += urb->transfer_buffer_length;
1311 else
1312 hdev->stat.err_tx++;
1313
1314 done:
1315 kfree(urb->setup_packet);
1316
1317 kfree_skb(skb);
1318 }
1319
btusb_open(struct hci_dev * hdev)1320 static int btusb_open(struct hci_dev *hdev)
1321 {
1322 struct btusb_data *data = hci_get_drvdata(hdev);
1323 int err;
1324
1325 BT_DBG("%s", hdev->name);
1326
1327 err = usb_autopm_get_interface(data->intf);
1328 if (err < 0)
1329 return err;
1330
1331 /* Patching USB firmware files prior to starting any URBs of HCI path
1332 * It is more safe to use USB bulk channel for downloading USB patch
1333 */
1334 if (data->setup_on_usb) {
1335 err = data->setup_on_usb(hdev);
1336 if (err < 0)
1337 goto setup_fail;
1338 }
1339
1340 data->intf->needs_remote_wakeup = 1;
1341
1342 /* Disable device remote wakeup when host is suspended
1343 * For Realtek chips, global suspend without
1344 * SET_FEATURE (DEVICE_REMOTE_WAKEUP) can save more power in device.
1345 */
1346 if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1347 device_wakeup_disable(&data->udev->dev);
1348
1349 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1350 goto done;
1351
1352 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1353 if (err < 0)
1354 goto failed;
1355
1356 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1357 if (err < 0) {
1358 usb_kill_anchored_urbs(&data->intr_anchor);
1359 goto failed;
1360 }
1361
1362 set_bit(BTUSB_BULK_RUNNING, &data->flags);
1363 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1364
1365 if (data->diag) {
1366 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1367 set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1368 }
1369
1370 done:
1371 usb_autopm_put_interface(data->intf);
1372 return 0;
1373
1374 failed:
1375 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1376 setup_fail:
1377 usb_autopm_put_interface(data->intf);
1378 return err;
1379 }
1380
btusb_stop_traffic(struct btusb_data * data)1381 static void btusb_stop_traffic(struct btusb_data *data)
1382 {
1383 usb_kill_anchored_urbs(&data->intr_anchor);
1384 usb_kill_anchored_urbs(&data->bulk_anchor);
1385 usb_kill_anchored_urbs(&data->isoc_anchor);
1386 usb_kill_anchored_urbs(&data->diag_anchor);
1387 usb_kill_anchored_urbs(&data->ctrl_anchor);
1388 }
1389
btusb_close(struct hci_dev * hdev)1390 static int btusb_close(struct hci_dev *hdev)
1391 {
1392 struct btusb_data *data = hci_get_drvdata(hdev);
1393 int err;
1394
1395 BT_DBG("%s", hdev->name);
1396
1397 cancel_work_sync(&data->work);
1398 cancel_work_sync(&data->waker);
1399
1400 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1401 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1402 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1403 clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1404
1405 btusb_stop_traffic(data);
1406 btusb_free_frags(data);
1407
1408 err = usb_autopm_get_interface(data->intf);
1409 if (err < 0)
1410 goto failed;
1411
1412 data->intf->needs_remote_wakeup = 0;
1413
1414 /* Enable remote wake up for auto-suspend */
1415 if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1416 data->intf->needs_remote_wakeup = 1;
1417
1418 usb_autopm_put_interface(data->intf);
1419
1420 failed:
1421 usb_scuttle_anchored_urbs(&data->deferred);
1422 return 0;
1423 }
1424
btusb_flush(struct hci_dev * hdev)1425 static int btusb_flush(struct hci_dev *hdev)
1426 {
1427 struct btusb_data *data = hci_get_drvdata(hdev);
1428
1429 BT_DBG("%s", hdev->name);
1430
1431 usb_kill_anchored_urbs(&data->tx_anchor);
1432 btusb_free_frags(data);
1433
1434 return 0;
1435 }
1436
alloc_ctrl_urb(struct hci_dev * hdev,struct sk_buff * skb)1437 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1438 {
1439 struct btusb_data *data = hci_get_drvdata(hdev);
1440 struct usb_ctrlrequest *dr;
1441 struct urb *urb;
1442 unsigned int pipe;
1443
1444 urb = usb_alloc_urb(0, GFP_KERNEL);
1445 if (!urb)
1446 return ERR_PTR(-ENOMEM);
1447
1448 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1449 if (!dr) {
1450 usb_free_urb(urb);
1451 return ERR_PTR(-ENOMEM);
1452 }
1453
1454 dr->bRequestType = data->cmdreq_type;
1455 dr->bRequest = data->cmdreq;
1456 dr->wIndex = 0;
1457 dr->wValue = 0;
1458 dr->wLength = __cpu_to_le16(skb->len);
1459
1460 pipe = usb_sndctrlpipe(data->udev, 0x00);
1461
1462 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1463 skb->data, skb->len, btusb_tx_complete, skb);
1464
1465 skb->dev = (void *)hdev;
1466
1467 return urb;
1468 }
1469
alloc_bulk_urb(struct hci_dev * hdev,struct sk_buff * skb)1470 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1471 {
1472 struct btusb_data *data = hci_get_drvdata(hdev);
1473 struct urb *urb;
1474 unsigned int pipe;
1475
1476 if (!data->bulk_tx_ep)
1477 return ERR_PTR(-ENODEV);
1478
1479 urb = usb_alloc_urb(0, GFP_KERNEL);
1480 if (!urb)
1481 return ERR_PTR(-ENOMEM);
1482
1483 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1484
1485 usb_fill_bulk_urb(urb, data->udev, pipe,
1486 skb->data, skb->len, btusb_tx_complete, skb);
1487
1488 skb->dev = (void *)hdev;
1489
1490 return urb;
1491 }
1492
alloc_isoc_urb(struct hci_dev * hdev,struct sk_buff * skb)1493 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1494 {
1495 struct btusb_data *data = hci_get_drvdata(hdev);
1496 struct urb *urb;
1497 unsigned int pipe;
1498
1499 if (!data->isoc_tx_ep)
1500 return ERR_PTR(-ENODEV);
1501
1502 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1503 if (!urb)
1504 return ERR_PTR(-ENOMEM);
1505
1506 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1507
1508 usb_fill_int_urb(urb, data->udev, pipe,
1509 skb->data, skb->len, btusb_isoc_tx_complete,
1510 skb, data->isoc_tx_ep->bInterval);
1511
1512 urb->transfer_flags = URB_ISO_ASAP;
1513
1514 if (data->isoc_altsetting == 6)
1515 __fill_isoc_descriptor_msbc(urb, skb->len,
1516 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize),
1517 data);
1518 else
1519 __fill_isoc_descriptor(urb, skb->len,
1520 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1521 skb->dev = (void *)hdev;
1522
1523 return urb;
1524 }
1525
submit_tx_urb(struct hci_dev * hdev,struct urb * urb)1526 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1527 {
1528 struct btusb_data *data = hci_get_drvdata(hdev);
1529 int err;
1530
1531 usb_anchor_urb(urb, &data->tx_anchor);
1532
1533 err = usb_submit_urb(urb, GFP_KERNEL);
1534 if (err < 0) {
1535 if (err != -EPERM && err != -ENODEV)
1536 bt_dev_err(hdev, "urb %p submission failed (%d)",
1537 urb, -err);
1538 kfree(urb->setup_packet);
1539 usb_unanchor_urb(urb);
1540 } else {
1541 usb_mark_last_busy(data->udev);
1542 }
1543
1544 usb_free_urb(urb);
1545 return err;
1546 }
1547
submit_or_queue_tx_urb(struct hci_dev * hdev,struct urb * urb)1548 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1549 {
1550 struct btusb_data *data = hci_get_drvdata(hdev);
1551 unsigned long flags;
1552 bool suspending;
1553
1554 spin_lock_irqsave(&data->txlock, flags);
1555 suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1556 if (!suspending)
1557 data->tx_in_flight++;
1558 spin_unlock_irqrestore(&data->txlock, flags);
1559
1560 if (!suspending)
1561 return submit_tx_urb(hdev, urb);
1562
1563 usb_anchor_urb(urb, &data->deferred);
1564 schedule_work(&data->waker);
1565
1566 usb_free_urb(urb);
1567 return 0;
1568 }
1569
btusb_send_frame(struct hci_dev * hdev,struct sk_buff * skb)1570 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1571 {
1572 struct urb *urb;
1573
1574 BT_DBG("%s", hdev->name);
1575
1576 switch (hci_skb_pkt_type(skb)) {
1577 case HCI_COMMAND_PKT:
1578 urb = alloc_ctrl_urb(hdev, skb);
1579 if (IS_ERR(urb))
1580 return PTR_ERR(urb);
1581
1582 hdev->stat.cmd_tx++;
1583 return submit_or_queue_tx_urb(hdev, urb);
1584
1585 case HCI_ACLDATA_PKT:
1586 urb = alloc_bulk_urb(hdev, skb);
1587 if (IS_ERR(urb))
1588 return PTR_ERR(urb);
1589
1590 hdev->stat.acl_tx++;
1591 return submit_or_queue_tx_urb(hdev, urb);
1592
1593 case HCI_SCODATA_PKT:
1594 if (hci_conn_num(hdev, SCO_LINK) < 1)
1595 return -ENODEV;
1596
1597 urb = alloc_isoc_urb(hdev, skb);
1598 if (IS_ERR(urb))
1599 return PTR_ERR(urb);
1600
1601 hdev->stat.sco_tx++;
1602 return submit_tx_urb(hdev, urb);
1603 }
1604
1605 return -EILSEQ;
1606 }
1607
btusb_notify(struct hci_dev * hdev,unsigned int evt)1608 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1609 {
1610 struct btusb_data *data = hci_get_drvdata(hdev);
1611
1612 BT_DBG("%s evt %d", hdev->name, evt);
1613
1614 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1615 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1616 data->air_mode = evt;
1617 schedule_work(&data->work);
1618 }
1619 }
1620
__set_isoc_interface(struct hci_dev * hdev,int altsetting)1621 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1622 {
1623 struct btusb_data *data = hci_get_drvdata(hdev);
1624 struct usb_interface *intf = data->isoc;
1625 struct usb_endpoint_descriptor *ep_desc;
1626 int i, err;
1627
1628 if (!data->isoc)
1629 return -ENODEV;
1630
1631 err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1632 if (err < 0) {
1633 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1634 return err;
1635 }
1636
1637 data->isoc_altsetting = altsetting;
1638
1639 data->isoc_tx_ep = NULL;
1640 data->isoc_rx_ep = NULL;
1641
1642 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1643 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1644
1645 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1646 data->isoc_tx_ep = ep_desc;
1647 continue;
1648 }
1649
1650 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1651 data->isoc_rx_ep = ep_desc;
1652 continue;
1653 }
1654 }
1655
1656 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1657 bt_dev_err(hdev, "invalid SCO descriptors");
1658 return -ENODEV;
1659 }
1660
1661 return 0;
1662 }
1663
btusb_switch_alt_setting(struct hci_dev * hdev,int new_alts)1664 static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts)
1665 {
1666 struct btusb_data *data = hci_get_drvdata(hdev);
1667 int err;
1668
1669 if (data->isoc_altsetting != new_alts) {
1670 unsigned long flags;
1671
1672 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1673 usb_kill_anchored_urbs(&data->isoc_anchor);
1674
1675 /* When isochronous alternate setting needs to be
1676 * changed, because SCO connection has been added
1677 * or removed, a packet fragment may be left in the
1678 * reassembling state. This could lead to wrongly
1679 * assembled fragments.
1680 *
1681 * Clear outstanding fragment when selecting a new
1682 * alternate setting.
1683 */
1684 spin_lock_irqsave(&data->rxlock, flags);
1685 kfree_skb(data->sco_skb);
1686 data->sco_skb = NULL;
1687 spin_unlock_irqrestore(&data->rxlock, flags);
1688
1689 err = __set_isoc_interface(hdev, new_alts);
1690 if (err < 0)
1691 return err;
1692 }
1693
1694 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1695 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1696 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1697 else
1698 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1699 }
1700
1701 return 0;
1702 }
1703
btusb_find_altsetting(struct btusb_data * data,int alt)1704 static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data,
1705 int alt)
1706 {
1707 struct usb_interface *intf = data->isoc;
1708 int i;
1709
1710 BT_DBG("Looking for Alt no :%d", alt);
1711
1712 if (!intf)
1713 return NULL;
1714
1715 for (i = 0; i < intf->num_altsetting; i++) {
1716 if (intf->altsetting[i].desc.bAlternateSetting == alt)
1717 return &intf->altsetting[i];
1718 }
1719
1720 return NULL;
1721 }
1722
btusb_work(struct work_struct * work)1723 static void btusb_work(struct work_struct *work)
1724 {
1725 struct btusb_data *data = container_of(work, struct btusb_data, work);
1726 struct hci_dev *hdev = data->hdev;
1727 int new_alts = 0;
1728 int err;
1729
1730 if (data->sco_num > 0) {
1731 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1732 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1733 if (err < 0) {
1734 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1735 usb_kill_anchored_urbs(&data->isoc_anchor);
1736 return;
1737 }
1738
1739 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1740 }
1741
1742 if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_CVSD) {
1743 if (hdev->voice_setting & 0x0020) {
1744 static const int alts[3] = { 2, 4, 5 };
1745
1746 new_alts = alts[data->sco_num - 1];
1747 } else {
1748 new_alts = data->sco_num;
1749 }
1750 } else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) {
1751 /* Bluetooth USB spec recommends alt 6 (63 bytes), but
1752 * many adapters do not support it. Alt 1 appears to
1753 * work for all adapters that do not have alt 6, and
1754 * which work with WBS at all. Some devices prefer
1755 * alt 3 (HCI payload >= 60 Bytes let air packet
1756 * data satisfy 60 bytes), requiring
1757 * MTU >= 3 (packets) * 25 (size) - 3 (headers) = 72
1758 * see also Core spec 5, vol 4, B 2.1.1 & Table 2.1.
1759 */
1760 if (btusb_find_altsetting(data, 6))
1761 new_alts = 6;
1762 else if (btusb_find_altsetting(data, 3) &&
1763 hdev->sco_mtu >= 72 &&
1764 test_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags))
1765 new_alts = 3;
1766 else
1767 new_alts = 1;
1768 }
1769
1770 if (btusb_switch_alt_setting(hdev, new_alts) < 0)
1771 bt_dev_err(hdev, "set USB alt:(%d) failed!", new_alts);
1772 } else {
1773 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1774 usb_kill_anchored_urbs(&data->isoc_anchor);
1775
1776 __set_isoc_interface(hdev, 0);
1777 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1778 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1779 }
1780 }
1781
btusb_waker(struct work_struct * work)1782 static void btusb_waker(struct work_struct *work)
1783 {
1784 struct btusb_data *data = container_of(work, struct btusb_data, waker);
1785 int err;
1786
1787 err = usb_autopm_get_interface(data->intf);
1788 if (err < 0)
1789 return;
1790
1791 usb_autopm_put_interface(data->intf);
1792 }
1793
btusb_setup_bcm92035(struct hci_dev * hdev)1794 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1795 {
1796 struct sk_buff *skb;
1797 u8 val = 0x00;
1798
1799 BT_DBG("%s", hdev->name);
1800
1801 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1802 if (IS_ERR(skb))
1803 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
1804 else
1805 kfree_skb(skb);
1806
1807 return 0;
1808 }
1809
btusb_setup_csr(struct hci_dev * hdev)1810 static int btusb_setup_csr(struct hci_dev *hdev)
1811 {
1812 struct btusb_data *data = hci_get_drvdata(hdev);
1813 u16 bcdDevice = le16_to_cpu(data->udev->descriptor.bcdDevice);
1814 struct hci_rp_read_local_version *rp;
1815 struct sk_buff *skb;
1816 bool is_fake = false;
1817
1818 BT_DBG("%s", hdev->name);
1819
1820 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1821 HCI_INIT_TIMEOUT);
1822 if (IS_ERR(skb)) {
1823 int err = PTR_ERR(skb);
1824 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
1825 return err;
1826 }
1827
1828 if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1829 bt_dev_err(hdev, "CSR: Local version length mismatch");
1830 kfree_skb(skb);
1831 return -EIO;
1832 }
1833
1834 rp = (struct hci_rp_read_local_version *)skb->data;
1835
1836 bt_dev_info(hdev, "CSR: Setting up dongle with HCI ver=%u rev=%04x; LMP ver=%u subver=%04x; manufacturer=%u",
1837 le16_to_cpu(rp->hci_ver), le16_to_cpu(rp->hci_rev),
1838 le16_to_cpu(rp->lmp_ver), le16_to_cpu(rp->lmp_subver),
1839 le16_to_cpu(rp->manufacturer));
1840
1841 /* Detect a wide host of Chinese controllers that aren't CSR.
1842 *
1843 * Known fake bcdDevices: 0x0100, 0x0134, 0x1915, 0x2520, 0x7558, 0x8891
1844 *
1845 * The main thing they have in common is that these are really popular low-cost
1846 * options that support newer Bluetooth versions but rely on heavy VID/PID
1847 * squatting of this poor old Bluetooth 1.1 device. Even sold as such.
1848 *
1849 * We detect actual CSR devices by checking that the HCI manufacturer code
1850 * is Cambridge Silicon Radio (10) and ensuring that LMP sub-version and
1851 * HCI rev values always match. As they both store the firmware number.
1852 */
1853 if (le16_to_cpu(rp->manufacturer) != 10 ||
1854 le16_to_cpu(rp->hci_rev) != le16_to_cpu(rp->lmp_subver))
1855 is_fake = true;
1856
1857 /* Known legit CSR firmware build numbers and their supported BT versions:
1858 * - 1.1 (0x1) -> 0x0073, 0x020d, 0x033c, 0x034e
1859 * - 1.2 (0x2) -> 0x04d9, 0x0529
1860 * - 2.0 (0x3) -> 0x07a6, 0x07ad, 0x0c5c
1861 * - 2.1 (0x4) -> 0x149c, 0x1735, 0x1899 (0x1899 is a BlueCore4-External)
1862 * - 4.0 (0x6) -> 0x1d86, 0x2031, 0x22bb
1863 *
1864 * e.g. Real CSR dongles with LMP subversion 0x73 are old enough that
1865 * support BT 1.1 only; so it's a dead giveaway when some
1866 * third-party BT 4.0 dongle reuses it.
1867 */
1868 else if (le16_to_cpu(rp->lmp_subver) <= 0x034e &&
1869 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_1)
1870 is_fake = true;
1871
1872 else if (le16_to_cpu(rp->lmp_subver) <= 0x0529 &&
1873 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_2)
1874 is_fake = true;
1875
1876 else if (le16_to_cpu(rp->lmp_subver) <= 0x0c5c &&
1877 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_0)
1878 is_fake = true;
1879
1880 else if (le16_to_cpu(rp->lmp_subver) <= 0x1899 &&
1881 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_1)
1882 is_fake = true;
1883
1884 else if (le16_to_cpu(rp->lmp_subver) <= 0x22bb &&
1885 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_4_0)
1886 is_fake = true;
1887
1888 /* Other clones which beat all the above checks */
1889 else if (bcdDevice == 0x0134 &&
1890 le16_to_cpu(rp->lmp_subver) == 0x0c5c &&
1891 le16_to_cpu(rp->hci_ver) == BLUETOOTH_VER_2_0)
1892 is_fake = true;
1893
1894 if (is_fake) {
1895 bt_dev_warn(hdev, "CSR: Unbranded CSR clone detected; adding workarounds...");
1896
1897 /* Generally these clones have big discrepancies between
1898 * advertised features and what's actually supported.
1899 * Probably will need to be expanded in the future;
1900 * without these the controller will lock up.
1901 */
1902 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1903 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks);
1904
1905 /* Clear the reset quirk since this is not an actual
1906 * early Bluetooth 1.1 device from CSR.
1907 */
1908 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1909 clear_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
1910 }
1911
1912 kfree_skb(skb);
1913
1914 return 0;
1915 }
1916
btusb_setup_intel_get_fw(struct hci_dev * hdev,struct intel_version * ver)1917 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1918 struct intel_version *ver)
1919 {
1920 const struct firmware *fw;
1921 char fwname[64];
1922 int ret;
1923
1924 snprintf(fwname, sizeof(fwname),
1925 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1926 ver->hw_platform, ver->hw_variant, ver->hw_revision,
1927 ver->fw_variant, ver->fw_revision, ver->fw_build_num,
1928 ver->fw_build_ww, ver->fw_build_yy);
1929
1930 ret = request_firmware(&fw, fwname, &hdev->dev);
1931 if (ret < 0) {
1932 if (ret == -EINVAL) {
1933 bt_dev_err(hdev, "Intel firmware file request failed (%d)",
1934 ret);
1935 return NULL;
1936 }
1937
1938 bt_dev_err(hdev, "failed to open Intel firmware file: %s (%d)",
1939 fwname, ret);
1940
1941 /* If the correct firmware patch file is not found, use the
1942 * default firmware patch file instead
1943 */
1944 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1945 ver->hw_platform, ver->hw_variant);
1946 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1947 bt_dev_err(hdev, "failed to open default fw file: %s",
1948 fwname);
1949 return NULL;
1950 }
1951 }
1952
1953 bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname);
1954
1955 return fw;
1956 }
1957
btusb_setup_intel_patching(struct hci_dev * hdev,const struct firmware * fw,const u8 ** fw_ptr,int * disable_patch)1958 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1959 const struct firmware *fw,
1960 const u8 **fw_ptr, int *disable_patch)
1961 {
1962 struct sk_buff *skb;
1963 struct hci_command_hdr *cmd;
1964 const u8 *cmd_param;
1965 struct hci_event_hdr *evt = NULL;
1966 const u8 *evt_param = NULL;
1967 int remain = fw->size - (*fw_ptr - fw->data);
1968
1969 /* The first byte indicates the types of the patch command or event.
1970 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1971 * in the current firmware buffer doesn't start with 0x01 or
1972 * the size of remain buffer is smaller than HCI command header,
1973 * the firmware file is corrupted and it should stop the patching
1974 * process.
1975 */
1976 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1977 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd read");
1978 return -EINVAL;
1979 }
1980 (*fw_ptr)++;
1981 remain--;
1982
1983 cmd = (struct hci_command_hdr *)(*fw_ptr);
1984 *fw_ptr += sizeof(*cmd);
1985 remain -= sizeof(*cmd);
1986
1987 /* Ensure that the remain firmware data is long enough than the length
1988 * of command parameter. If not, the firmware file is corrupted.
1989 */
1990 if (remain < cmd->plen) {
1991 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd len");
1992 return -EFAULT;
1993 }
1994
1995 /* If there is a command that loads a patch in the firmware
1996 * file, then enable the patch upon success, otherwise just
1997 * disable the manufacturer mode, for example patch activation
1998 * is not required when the default firmware patch file is used
1999 * because there are no patch data to load.
2000 */
2001 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
2002 *disable_patch = 0;
2003
2004 cmd_param = *fw_ptr;
2005 *fw_ptr += cmd->plen;
2006 remain -= cmd->plen;
2007
2008 /* This reads the expected events when the above command is sent to the
2009 * device. Some vendor commands expects more than one events, for
2010 * example command status event followed by vendor specific event.
2011 * For this case, it only keeps the last expected event. so the command
2012 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
2013 * last expected event.
2014 */
2015 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
2016 (*fw_ptr)++;
2017 remain--;
2018
2019 evt = (struct hci_event_hdr *)(*fw_ptr);
2020 *fw_ptr += sizeof(*evt);
2021 remain -= sizeof(*evt);
2022
2023 if (remain < evt->plen) {
2024 bt_dev_err(hdev, "Intel fw corrupted: invalid evt len");
2025 return -EFAULT;
2026 }
2027
2028 evt_param = *fw_ptr;
2029 *fw_ptr += evt->plen;
2030 remain -= evt->plen;
2031 }
2032
2033 /* Every HCI commands in the firmware file has its correspond event.
2034 * If event is not found or remain is smaller than zero, the firmware
2035 * file is corrupted.
2036 */
2037 if (!evt || !evt_param || remain < 0) {
2038 bt_dev_err(hdev, "Intel fw corrupted: invalid evt read");
2039 return -EFAULT;
2040 }
2041
2042 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
2043 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
2044 if (IS_ERR(skb)) {
2045 bt_dev_err(hdev, "sending Intel patch command (0x%4.4x) failed (%ld)",
2046 cmd->opcode, PTR_ERR(skb));
2047 return PTR_ERR(skb);
2048 }
2049
2050 /* It ensures that the returned event matches the event data read from
2051 * the firmware file. At fist, it checks the length and then
2052 * the contents of the event.
2053 */
2054 if (skb->len != evt->plen) {
2055 bt_dev_err(hdev, "mismatch event length (opcode 0x%4.4x)",
2056 le16_to_cpu(cmd->opcode));
2057 kfree_skb(skb);
2058 return -EFAULT;
2059 }
2060
2061 if (memcmp(skb->data, evt_param, evt->plen)) {
2062 bt_dev_err(hdev, "mismatch event parameter (opcode 0x%4.4x)",
2063 le16_to_cpu(cmd->opcode));
2064 kfree_skb(skb);
2065 return -EFAULT;
2066 }
2067 kfree_skb(skb);
2068
2069 return 0;
2070 }
2071
btusb_setup_intel(struct hci_dev * hdev)2072 static int btusb_setup_intel(struct hci_dev *hdev)
2073 {
2074 struct sk_buff *skb;
2075 const struct firmware *fw;
2076 const u8 *fw_ptr;
2077 int disable_patch, err;
2078 struct intel_version ver;
2079
2080 BT_DBG("%s", hdev->name);
2081
2082 /* The controller has a bug with the first HCI command sent to it
2083 * returning number of completed commands as zero. This would stall the
2084 * command processing in the Bluetooth core.
2085 *
2086 * As a workaround, send HCI Reset command first which will reset the
2087 * number of completed commands and allow normal command processing
2088 * from now on.
2089 */
2090 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2091 if (IS_ERR(skb)) {
2092 bt_dev_err(hdev, "sending initial HCI reset command failed (%ld)",
2093 PTR_ERR(skb));
2094 return PTR_ERR(skb);
2095 }
2096 kfree_skb(skb);
2097
2098 /* Read Intel specific controller version first to allow selection of
2099 * which firmware file to load.
2100 *
2101 * The returned information are hardware variant and revision plus
2102 * firmware variant, revision and build number.
2103 */
2104 err = btintel_read_version(hdev, &ver);
2105 if (err)
2106 return err;
2107
2108 bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
2109 ver.hw_platform, ver.hw_variant, ver.hw_revision,
2110 ver.fw_variant, ver.fw_revision, ver.fw_build_num,
2111 ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
2112
2113 /* fw_patch_num indicates the version of patch the device currently
2114 * have. If there is no patch data in the device, it is always 0x00.
2115 * So, if it is other than 0x00, no need to patch the device again.
2116 */
2117 if (ver.fw_patch_num) {
2118 bt_dev_info(hdev, "Intel device is already patched. "
2119 "patch num: %02x", ver.fw_patch_num);
2120 goto complete;
2121 }
2122
2123 /* Opens the firmware patch file based on the firmware version read
2124 * from the controller. If it fails to open the matching firmware
2125 * patch file, it tries to open the default firmware patch file.
2126 * If no patch file is found, allow the device to operate without
2127 * a patch.
2128 */
2129 fw = btusb_setup_intel_get_fw(hdev, &ver);
2130 if (!fw)
2131 goto complete;
2132 fw_ptr = fw->data;
2133
2134 /* Enable the manufacturer mode of the controller.
2135 * Only while this mode is enabled, the driver can download the
2136 * firmware patch data and configuration parameters.
2137 */
2138 err = btintel_enter_mfg(hdev);
2139 if (err) {
2140 release_firmware(fw);
2141 return err;
2142 }
2143
2144 disable_patch = 1;
2145
2146 /* The firmware data file consists of list of Intel specific HCI
2147 * commands and its expected events. The first byte indicates the
2148 * type of the message, either HCI command or HCI event.
2149 *
2150 * It reads the command and its expected event from the firmware file,
2151 * and send to the controller. Once __hci_cmd_sync_ev() returns,
2152 * the returned event is compared with the event read from the firmware
2153 * file and it will continue until all the messages are downloaded to
2154 * the controller.
2155 *
2156 * Once the firmware patching is completed successfully,
2157 * the manufacturer mode is disabled with reset and activating the
2158 * downloaded patch.
2159 *
2160 * If the firmware patching fails, the manufacturer mode is
2161 * disabled with reset and deactivating the patch.
2162 *
2163 * If the default patch file is used, no reset is done when disabling
2164 * the manufacturer.
2165 */
2166 while (fw->size > fw_ptr - fw->data) {
2167 int ret;
2168
2169 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
2170 &disable_patch);
2171 if (ret < 0)
2172 goto exit_mfg_deactivate;
2173 }
2174
2175 release_firmware(fw);
2176
2177 if (disable_patch)
2178 goto exit_mfg_disable;
2179
2180 /* Patching completed successfully and disable the manufacturer mode
2181 * with reset and activate the downloaded firmware patches.
2182 */
2183 err = btintel_exit_mfg(hdev, true, true);
2184 if (err)
2185 return err;
2186
2187 /* Need build number for downloaded fw patches in
2188 * every power-on boot
2189 */
2190 err = btintel_read_version(hdev, &ver);
2191 if (err)
2192 return err;
2193 bt_dev_info(hdev, "Intel BT fw patch 0x%02x completed & activated",
2194 ver.fw_patch_num);
2195
2196 goto complete;
2197
2198 exit_mfg_disable:
2199 /* Disable the manufacturer mode without reset */
2200 err = btintel_exit_mfg(hdev, false, false);
2201 if (err)
2202 return err;
2203
2204 bt_dev_info(hdev, "Intel firmware patch completed");
2205
2206 goto complete;
2207
2208 exit_mfg_deactivate:
2209 release_firmware(fw);
2210
2211 /* Patching failed. Disable the manufacturer mode with reset and
2212 * deactivate the downloaded firmware patches.
2213 */
2214 err = btintel_exit_mfg(hdev, true, false);
2215 if (err)
2216 return err;
2217
2218 bt_dev_info(hdev, "Intel firmware patch completed and deactivated");
2219
2220 complete:
2221 /* Set the event mask for Intel specific vendor events. This enables
2222 * a few extra events that are useful during general operation.
2223 */
2224 btintel_set_event_mask_mfg(hdev, false);
2225
2226 btintel_check_bdaddr(hdev);
2227 return 0;
2228 }
2229
inject_cmd_complete(struct hci_dev * hdev,__u16 opcode)2230 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
2231 {
2232 struct sk_buff *skb;
2233 struct hci_event_hdr *hdr;
2234 struct hci_ev_cmd_complete *evt;
2235
2236 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
2237 if (!skb)
2238 return -ENOMEM;
2239
2240 hdr = skb_put(skb, sizeof(*hdr));
2241 hdr->evt = HCI_EV_CMD_COMPLETE;
2242 hdr->plen = sizeof(*evt) + 1;
2243
2244 evt = skb_put(skb, sizeof(*evt));
2245 evt->ncmd = 0x01;
2246 evt->opcode = cpu_to_le16(opcode);
2247
2248 skb_put_u8(skb, 0x00);
2249
2250 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2251
2252 return hci_recv_frame(hdev, skb);
2253 }
2254
btusb_recv_bulk_intel(struct btusb_data * data,void * buffer,int count)2255 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
2256 int count)
2257 {
2258 /* When the device is in bootloader mode, then it can send
2259 * events via the bulk endpoint. These events are treated the
2260 * same way as the ones received from the interrupt endpoint.
2261 */
2262 if (test_bit(BTUSB_BOOTLOADER, &data->flags))
2263 return btusb_recv_intr(data, buffer, count);
2264
2265 return btusb_recv_bulk(data, buffer, count);
2266 }
2267
btusb_intel_bootup(struct btusb_data * data,const void * ptr,unsigned int len)2268 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
2269 unsigned int len)
2270 {
2271 const struct intel_bootup *evt = ptr;
2272
2273 if (len != sizeof(*evt))
2274 return;
2275
2276 if (test_and_clear_bit(BTUSB_BOOTING, &data->flags))
2277 wake_up_bit(&data->flags, BTUSB_BOOTING);
2278 }
2279
btusb_intel_secure_send_result(struct btusb_data * data,const void * ptr,unsigned int len)2280 static void btusb_intel_secure_send_result(struct btusb_data *data,
2281 const void *ptr, unsigned int len)
2282 {
2283 const struct intel_secure_send_result *evt = ptr;
2284
2285 if (len != sizeof(*evt))
2286 return;
2287
2288 if (evt->result)
2289 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
2290
2291 if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
2292 test_bit(BTUSB_FIRMWARE_LOADED, &data->flags))
2293 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
2294 }
2295
btusb_recv_event_intel(struct hci_dev * hdev,struct sk_buff * skb)2296 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2297 {
2298 struct btusb_data *data = hci_get_drvdata(hdev);
2299
2300 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2301 struct hci_event_hdr *hdr = (void *)skb->data;
2302
2303 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2304 hdr->plen > 0) {
2305 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2306 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2307
2308 switch (skb->data[2]) {
2309 case 0x02:
2310 /* When switching to the operational firmware
2311 * the device sends a vendor specific event
2312 * indicating that the bootup completed.
2313 */
2314 btusb_intel_bootup(data, ptr, len);
2315 break;
2316 case 0x06:
2317 /* When the firmware loading completes the
2318 * device sends out a vendor specific event
2319 * indicating the result of the firmware
2320 * loading.
2321 */
2322 btusb_intel_secure_send_result(data, ptr, len);
2323 break;
2324 }
2325 }
2326 }
2327
2328 return hci_recv_frame(hdev, skb);
2329 }
2330
btusb_send_frame_intel(struct hci_dev * hdev,struct sk_buff * skb)2331 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2332 {
2333 struct btusb_data *data = hci_get_drvdata(hdev);
2334 struct urb *urb;
2335
2336 BT_DBG("%s", hdev->name);
2337
2338 switch (hci_skb_pkt_type(skb)) {
2339 case HCI_COMMAND_PKT:
2340 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2341 struct hci_command_hdr *cmd = (void *)skb->data;
2342 __u16 opcode = le16_to_cpu(cmd->opcode);
2343
2344 /* When in bootloader mode and the command 0xfc09
2345 * is received, it needs to be send down the
2346 * bulk endpoint. So allocate a bulk URB instead.
2347 */
2348 if (opcode == 0xfc09)
2349 urb = alloc_bulk_urb(hdev, skb);
2350 else
2351 urb = alloc_ctrl_urb(hdev, skb);
2352
2353 /* When the 0xfc01 command is issued to boot into
2354 * the operational firmware, it will actually not
2355 * send a command complete event. To keep the flow
2356 * control working inject that event here.
2357 */
2358 if (opcode == 0xfc01)
2359 inject_cmd_complete(hdev, opcode);
2360 } else {
2361 urb = alloc_ctrl_urb(hdev, skb);
2362 }
2363 if (IS_ERR(urb))
2364 return PTR_ERR(urb);
2365
2366 hdev->stat.cmd_tx++;
2367 return submit_or_queue_tx_urb(hdev, urb);
2368
2369 case HCI_ACLDATA_PKT:
2370 urb = alloc_bulk_urb(hdev, skb);
2371 if (IS_ERR(urb))
2372 return PTR_ERR(urb);
2373
2374 hdev->stat.acl_tx++;
2375 return submit_or_queue_tx_urb(hdev, urb);
2376
2377 case HCI_SCODATA_PKT:
2378 if (hci_conn_num(hdev, SCO_LINK) < 1)
2379 return -ENODEV;
2380
2381 urb = alloc_isoc_urb(hdev, skb);
2382 if (IS_ERR(urb))
2383 return PTR_ERR(urb);
2384
2385 hdev->stat.sco_tx++;
2386 return submit_tx_urb(hdev, urb);
2387 }
2388
2389 return -EILSEQ;
2390 }
2391
btusb_setup_intel_new_get_fw_name(struct intel_version * ver,struct intel_boot_params * params,char * fw_name,size_t len,const char * suffix)2392 static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver,
2393 struct intel_boot_params *params,
2394 char *fw_name, size_t len,
2395 const char *suffix)
2396 {
2397 switch (ver->hw_variant) {
2398 case 0x0b: /* SfP */
2399 case 0x0c: /* WsP */
2400 snprintf(fw_name, len, "intel/ibt-%u-%u.%s",
2401 le16_to_cpu(ver->hw_variant),
2402 le16_to_cpu(params->dev_revid),
2403 suffix);
2404 break;
2405 case 0x11: /* JfP */
2406 case 0x12: /* ThP */
2407 case 0x13: /* HrP */
2408 case 0x14: /* CcP */
2409 snprintf(fw_name, len, "intel/ibt-%u-%u-%u.%s",
2410 le16_to_cpu(ver->hw_variant),
2411 le16_to_cpu(ver->hw_revision),
2412 le16_to_cpu(ver->fw_revision),
2413 suffix);
2414 break;
2415 default:
2416 return false;
2417 }
2418 return true;
2419 }
2420
btusb_intel_download_firmware(struct hci_dev * hdev,struct intel_version * ver,struct intel_boot_params * params,u32 * boot_param)2421 static int btusb_intel_download_firmware(struct hci_dev *hdev,
2422 struct intel_version *ver,
2423 struct intel_boot_params *params,
2424 u32 *boot_param)
2425 {
2426 const struct firmware *fw;
2427 char fwname[64];
2428 int err;
2429 struct btusb_data *data = hci_get_drvdata(hdev);
2430
2431 if (!ver || !params)
2432 return -EINVAL;
2433
2434 /* The hardware platform number has a fixed value of 0x37 and
2435 * for now only accept this single value.
2436 */
2437 if (ver->hw_platform != 0x37) {
2438 bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)",
2439 ver->hw_platform);
2440 return -EINVAL;
2441 }
2442
2443 /* Check for supported iBT hardware variants of this firmware
2444 * loading method.
2445 *
2446 * This check has been put in place to ensure correct forward
2447 * compatibility options when newer hardware variants come along.
2448 */
2449 switch (ver->hw_variant) {
2450 case 0x0b: /* SfP */
2451 case 0x0c: /* WsP */
2452 case 0x11: /* JfP */
2453 case 0x12: /* ThP */
2454 case 0x13: /* HrP */
2455 case 0x14: /* CcP */
2456 break;
2457 default:
2458 bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",
2459 ver->hw_variant);
2460 return -EINVAL;
2461 }
2462
2463 btintel_version_info(hdev, ver);
2464
2465 /* The firmware variant determines if the device is in bootloader
2466 * mode or is running operational firmware. The value 0x06 identifies
2467 * the bootloader and the value 0x23 identifies the operational
2468 * firmware.
2469 *
2470 * When the operational firmware is already present, then only
2471 * the check for valid Bluetooth device address is needed. This
2472 * determines if the device will be added as configured or
2473 * unconfigured controller.
2474 *
2475 * It is not possible to use the Secure Boot Parameters in this
2476 * case since that command is only available in bootloader mode.
2477 */
2478 if (ver->fw_variant == 0x23) {
2479 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2480 btintel_check_bdaddr(hdev);
2481 return 0;
2482 }
2483
2484 /* If the device is not in bootloader mode, then the only possible
2485 * choice is to return an error and abort the device initialization.
2486 */
2487 if (ver->fw_variant != 0x06) {
2488 bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)",
2489 ver->fw_variant);
2490 return -ENODEV;
2491 }
2492
2493 /* Read the secure boot parameters to identify the operating
2494 * details of the bootloader.
2495 */
2496 err = btintel_read_boot_params(hdev, params);
2497 if (err)
2498 return err;
2499
2500 /* It is required that every single firmware fragment is acknowledged
2501 * with a command complete event. If the boot parameters indicate
2502 * that this bootloader does not send them, then abort the setup.
2503 */
2504 if (params->limited_cce != 0x00) {
2505 bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",
2506 params->limited_cce);
2507 return -EINVAL;
2508 }
2509
2510 /* If the OTP has no valid Bluetooth device address, then there will
2511 * also be no valid address for the operational firmware.
2512 */
2513 if (!bacmp(¶ms->otp_bdaddr, BDADDR_ANY)) {
2514 bt_dev_info(hdev, "No device address configured");
2515 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2516 }
2517
2518 /* With this Intel bootloader only the hardware variant and device
2519 * revision information are used to select the right firmware for SfP
2520 * and WsP.
2521 *
2522 * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2523 *
2524 * Currently the supported hardware variants are:
2525 * 11 (0x0b) for iBT3.0 (LnP/SfP)
2526 * 12 (0x0c) for iBT3.5 (WsP)
2527 *
2528 * For ThP/JfP and for future SKU's, the FW name varies based on HW
2529 * variant, HW revision and FW revision, as these are dependent on CNVi
2530 * and RF Combination.
2531 *
2532 * 17 (0x11) for iBT3.5 (JfP)
2533 * 18 (0x12) for iBT3.5 (ThP)
2534 *
2535 * The firmware file name for these will be
2536 * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi.
2537 *
2538 */
2539 err = btusb_setup_intel_new_get_fw_name(ver, params, fwname,
2540 sizeof(fwname), "sfi");
2541 if (!err) {
2542 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2543 return -EINVAL;
2544 }
2545
2546 err = request_firmware(&fw, fwname, &hdev->dev);
2547 if (err < 0) {
2548 bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err);
2549 return err;
2550 }
2551
2552 bt_dev_info(hdev, "Found device firmware: %s", fwname);
2553
2554 if (fw->size < 644) {
2555 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2556 fw->size);
2557 err = -EBADF;
2558 goto done;
2559 }
2560
2561 set_bit(BTUSB_DOWNLOADING, &data->flags);
2562
2563 /* Start firmware downloading and get boot parameter */
2564 err = btintel_download_firmware(hdev, fw, boot_param);
2565 if (err < 0) {
2566 /* When FW download fails, send Intel Reset to retry
2567 * FW download.
2568 */
2569 btintel_reset_to_bootloader(hdev);
2570 goto done;
2571 }
2572 set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2573
2574 bt_dev_info(hdev, "Waiting for firmware download to complete");
2575
2576 /* Before switching the device into operational mode and with that
2577 * booting the loaded firmware, wait for the bootloader notification
2578 * that all fragments have been successfully received.
2579 *
2580 * When the event processing receives the notification, then the
2581 * BTUSB_DOWNLOADING flag will be cleared.
2582 *
2583 * The firmware loading should not take longer than 5 seconds
2584 * and thus just timeout if that happens and fail the setup
2585 * of this device.
2586 */
2587 err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2588 TASK_INTERRUPTIBLE,
2589 msecs_to_jiffies(5000));
2590 if (err == -EINTR) {
2591 bt_dev_err(hdev, "Firmware loading interrupted");
2592 goto done;
2593 }
2594
2595 if (err) {
2596 bt_dev_err(hdev, "Firmware loading timeout");
2597 err = -ETIMEDOUT;
2598 btintel_reset_to_bootloader(hdev);
2599 goto done;
2600 }
2601
2602 if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2603 bt_dev_err(hdev, "Firmware loading failed");
2604 err = -ENOEXEC;
2605 goto done;
2606 }
2607
2608 done:
2609 release_firmware(fw);
2610 return err;
2611 }
2612
btusb_setup_intel_new(struct hci_dev * hdev)2613 static int btusb_setup_intel_new(struct hci_dev *hdev)
2614 {
2615 struct btusb_data *data = hci_get_drvdata(hdev);
2616 struct intel_version ver;
2617 struct intel_boot_params params;
2618 u32 boot_param;
2619 char ddcname[64];
2620 ktime_t calltime, delta, rettime;
2621 unsigned long long duration;
2622 int err;
2623 struct intel_debug_features features;
2624
2625 BT_DBG("%s", hdev->name);
2626
2627 /* Set the default boot parameter to 0x0 and it is updated to
2628 * SKU specific boot parameter after reading Intel_Write_Boot_Params
2629 * command while downloading the firmware.
2630 */
2631 boot_param = 0x00000000;
2632
2633 calltime = ktime_get();
2634
2635 /* Read the Intel version information to determine if the device
2636 * is in bootloader mode or if it already has operational firmware
2637 * loaded.
2638 */
2639 err = btintel_read_version(hdev, &ver);
2640 if (err) {
2641 bt_dev_err(hdev, "Intel Read version failed (%d)", err);
2642 btintel_reset_to_bootloader(hdev);
2643 return err;
2644 }
2645
2646 err = btusb_intel_download_firmware(hdev, &ver, ¶ms, &boot_param);
2647 if (err)
2648 return err;
2649
2650 /* controller is already having an operational firmware */
2651 if (ver.fw_variant == 0x23)
2652 goto finish;
2653
2654 rettime = ktime_get();
2655 delta = ktime_sub(rettime, calltime);
2656 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2657
2658 bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2659
2660 calltime = ktime_get();
2661
2662 set_bit(BTUSB_BOOTING, &data->flags);
2663
2664 err = btintel_send_intel_reset(hdev, boot_param);
2665 if (err) {
2666 bt_dev_err(hdev, "Intel Soft Reset failed (%d)", err);
2667 btintel_reset_to_bootloader(hdev);
2668 return err;
2669 }
2670
2671 /* The bootloader will not indicate when the device is ready. This
2672 * is done by the operational firmware sending bootup notification.
2673 *
2674 * Booting into operational firmware should not take longer than
2675 * 1 second. However if that happens, then just fail the setup
2676 * since something went wrong.
2677 */
2678 bt_dev_info(hdev, "Waiting for device to boot");
2679
2680 err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2681 TASK_INTERRUPTIBLE,
2682 msecs_to_jiffies(1000));
2683
2684 if (err == -EINTR) {
2685 bt_dev_err(hdev, "Device boot interrupted");
2686 return -EINTR;
2687 }
2688
2689 if (err) {
2690 bt_dev_err(hdev, "Device boot timeout");
2691 btintel_reset_to_bootloader(hdev);
2692 return -ETIMEDOUT;
2693 }
2694
2695 rettime = ktime_get();
2696 delta = ktime_sub(rettime, calltime);
2697 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2698
2699 bt_dev_info(hdev, "Device booted in %llu usecs", duration);
2700
2701 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2702
2703 err = btusb_setup_intel_new_get_fw_name(&ver, ¶ms, ddcname,
2704 sizeof(ddcname), "ddc");
2705
2706 if (!err) {
2707 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2708 } else {
2709 /* Once the device is running in operational mode, it needs to
2710 * apply the device configuration (DDC) parameters.
2711 *
2712 * The device can work without DDC parameters, so even if it
2713 * fails to load the file, no need to fail the setup.
2714 */
2715 btintel_load_ddc_config(hdev, ddcname);
2716 }
2717
2718 /* Read the Intel supported features and if new exception formats
2719 * supported, need to load the additional DDC config to enable.
2720 */
2721 btintel_read_debug_features(hdev, &features);
2722
2723 /* Set DDC mask for available debug features */
2724 btintel_set_debug_features(hdev, &features);
2725
2726 /* Read the Intel version information after loading the FW */
2727 err = btintel_read_version(hdev, &ver);
2728 if (err)
2729 return err;
2730
2731 btintel_version_info(hdev, &ver);
2732
2733 finish:
2734 /* All Intel controllers that support the Microsoft vendor
2735 * extension are using 0xFC1E for VsMsftOpCode.
2736 */
2737 switch (ver.hw_variant) {
2738 case 0x12: /* ThP */
2739 hci_set_msft_opcode(hdev, 0xFC1E);
2740 break;
2741 }
2742
2743 /* Set the event mask for Intel specific vendor events. This enables
2744 * a few extra events that are useful during general operation. It
2745 * does not enable any debugging related events.
2746 *
2747 * The device will function correctly without these events enabled
2748 * and thus no need to fail the setup.
2749 */
2750 btintel_set_event_mask(hdev, false);
2751
2752 return 0;
2753 }
2754
btusb_shutdown_intel(struct hci_dev * hdev)2755 static int btusb_shutdown_intel(struct hci_dev *hdev)
2756 {
2757 struct sk_buff *skb;
2758 long ret;
2759
2760 /* In the shutdown sequence where Bluetooth is turned off followed
2761 * by WiFi being turned off, turning WiFi back on causes issue with
2762 * the RF calibration.
2763 *
2764 * To ensure that any RF activity has been stopped, issue HCI Reset
2765 * command to clear all ongoing activity including advertising,
2766 * scanning etc.
2767 */
2768 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2769 if (IS_ERR(skb)) {
2770 ret = PTR_ERR(skb);
2771 bt_dev_err(hdev, "HCI reset during shutdown failed");
2772 return ret;
2773 }
2774 kfree_skb(skb);
2775
2776 /* Some platforms have an issue with BT LED when the interface is
2777 * down or BT radio is turned off, which takes 5 seconds to BT LED
2778 * goes off. This command turns off the BT LED immediately.
2779 */
2780 skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2781 if (IS_ERR(skb)) {
2782 ret = PTR_ERR(skb);
2783 bt_dev_err(hdev, "turning off Intel device LED failed");
2784 return ret;
2785 }
2786 kfree_skb(skb);
2787
2788 return 0;
2789 }
2790
btusb_shutdown_intel_new(struct hci_dev * hdev)2791 static int btusb_shutdown_intel_new(struct hci_dev *hdev)
2792 {
2793 struct sk_buff *skb;
2794
2795 /* Send HCI Reset to the controller to stop any BT activity which
2796 * were triggered. This will help to save power and maintain the
2797 * sync b/w Host and controller
2798 */
2799 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2800 if (IS_ERR(skb)) {
2801 bt_dev_err(hdev, "HCI reset during shutdown failed");
2802 return PTR_ERR(skb);
2803 }
2804 kfree_skb(skb);
2805
2806 return 0;
2807 }
2808
2809 #define FIRMWARE_MT7663 "mediatek/mt7663pr2h.bin"
2810 #define FIRMWARE_MT7668 "mediatek/mt7668pr2h.bin"
2811
2812 #define HCI_WMT_MAX_EVENT_SIZE 64
2813
2814 enum {
2815 BTMTK_WMT_PATCH_DWNLD = 0x1,
2816 BTMTK_WMT_FUNC_CTRL = 0x6,
2817 BTMTK_WMT_RST = 0x7,
2818 BTMTK_WMT_SEMAPHORE = 0x17,
2819 };
2820
2821 enum {
2822 BTMTK_WMT_INVALID,
2823 BTMTK_WMT_PATCH_UNDONE,
2824 BTMTK_WMT_PATCH_PROGRESS,
2825 BTMTK_WMT_PATCH_DONE,
2826 BTMTK_WMT_ON_UNDONE,
2827 BTMTK_WMT_ON_DONE,
2828 BTMTK_WMT_ON_PROGRESS,
2829 };
2830
2831 struct btmtk_wmt_hdr {
2832 u8 dir;
2833 u8 op;
2834 __le16 dlen;
2835 u8 flag;
2836 } __packed;
2837
2838 struct btmtk_hci_wmt_cmd {
2839 struct btmtk_wmt_hdr hdr;
2840 u8 data[];
2841 } __packed;
2842
2843 struct btmtk_hci_wmt_evt {
2844 struct hci_event_hdr hhdr;
2845 struct btmtk_wmt_hdr whdr;
2846 } __packed;
2847
2848 struct btmtk_hci_wmt_evt_funcc {
2849 struct btmtk_hci_wmt_evt hwhdr;
2850 __be16 status;
2851 } __packed;
2852
2853 struct btmtk_tci_sleep {
2854 u8 mode;
2855 __le16 duration;
2856 __le16 host_duration;
2857 u8 host_wakeup_pin;
2858 u8 time_compensation;
2859 } __packed;
2860
2861 struct btmtk_hci_wmt_params {
2862 u8 op;
2863 u8 flag;
2864 u16 dlen;
2865 const void *data;
2866 u32 *status;
2867 };
2868
btusb_mtk_wmt_recv(struct urb * urb)2869 static void btusb_mtk_wmt_recv(struct urb *urb)
2870 {
2871 struct hci_dev *hdev = urb->context;
2872 struct btusb_data *data = hci_get_drvdata(hdev);
2873 struct hci_event_hdr *hdr;
2874 struct sk_buff *skb;
2875 int err;
2876
2877 if (urb->status == 0 && urb->actual_length > 0) {
2878 hdev->stat.byte_rx += urb->actual_length;
2879
2880 /* WMT event shouldn't be fragmented and the size should be
2881 * less than HCI_WMT_MAX_EVENT_SIZE.
2882 */
2883 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
2884 if (!skb) {
2885 hdev->stat.err_rx++;
2886 kfree(urb->setup_packet);
2887 return;
2888 }
2889
2890 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2891 skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
2892
2893 hdr = (void *)skb->data;
2894 /* Fix up the vendor event id with 0xff for vendor specific
2895 * instead of 0xe4 so that event send via monitoring socket can
2896 * be parsed properly.
2897 */
2898 hdr->evt = 0xff;
2899
2900 /* When someone waits for the WMT event, the skb is being cloned
2901 * and being processed the events from there then.
2902 */
2903 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
2904 data->evt_skb = skb_clone(skb, GFP_ATOMIC);
2905 if (!data->evt_skb) {
2906 kfree_skb(skb);
2907 kfree(urb->setup_packet);
2908 return;
2909 }
2910 }
2911
2912 err = hci_recv_frame(hdev, skb);
2913 if (err < 0) {
2914 kfree_skb(data->evt_skb);
2915 data->evt_skb = NULL;
2916 kfree(urb->setup_packet);
2917 return;
2918 }
2919
2920 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
2921 &data->flags)) {
2922 /* Barrier to sync with other CPUs */
2923 smp_mb__after_atomic();
2924 wake_up_bit(&data->flags,
2925 BTUSB_TX_WAIT_VND_EVT);
2926 }
2927 kfree(urb->setup_packet);
2928 return;
2929 } else if (urb->status == -ENOENT) {
2930 /* Avoid suspend failed when usb_kill_urb */
2931 return;
2932 }
2933
2934 usb_mark_last_busy(data->udev);
2935
2936 /* The URB complete handler is still called with urb->actual_length = 0
2937 * when the event is not available, so we should keep re-submitting
2938 * URB until WMT event returns, Also, It's necessary to wait some time
2939 * between the two consecutive control URBs to relax the target device
2940 * to generate the event. Otherwise, the WMT event cannot return from
2941 * the device successfully.
2942 */
2943 udelay(500);
2944
2945 usb_anchor_urb(urb, &data->ctrl_anchor);
2946 err = usb_submit_urb(urb, GFP_ATOMIC);
2947 if (err < 0) {
2948 kfree(urb->setup_packet);
2949 /* -EPERM: urb is being killed;
2950 * -ENODEV: device got disconnected
2951 */
2952 if (err != -EPERM && err != -ENODEV)
2953 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
2954 urb, -err);
2955 usb_unanchor_urb(urb);
2956 }
2957 }
2958
btusb_mtk_submit_wmt_recv_urb(struct hci_dev * hdev)2959 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
2960 {
2961 struct btusb_data *data = hci_get_drvdata(hdev);
2962 struct usb_ctrlrequest *dr;
2963 unsigned char *buf;
2964 int err, size = 64;
2965 unsigned int pipe;
2966 struct urb *urb;
2967
2968 urb = usb_alloc_urb(0, GFP_KERNEL);
2969 if (!urb)
2970 return -ENOMEM;
2971
2972 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
2973 if (!dr) {
2974 usb_free_urb(urb);
2975 return -ENOMEM;
2976 }
2977
2978 dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
2979 dr->bRequest = 1;
2980 dr->wIndex = cpu_to_le16(0);
2981 dr->wValue = cpu_to_le16(48);
2982 dr->wLength = cpu_to_le16(size);
2983
2984 buf = kmalloc(size, GFP_KERNEL);
2985 if (!buf) {
2986 kfree(dr);
2987 usb_free_urb(urb);
2988 return -ENOMEM;
2989 }
2990
2991 pipe = usb_rcvctrlpipe(data->udev, 0);
2992
2993 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
2994 buf, size, btusb_mtk_wmt_recv, hdev);
2995
2996 urb->transfer_flags |= URB_FREE_BUFFER;
2997
2998 usb_anchor_urb(urb, &data->ctrl_anchor);
2999 err = usb_submit_urb(urb, GFP_KERNEL);
3000 if (err < 0) {
3001 if (err != -EPERM && err != -ENODEV)
3002 bt_dev_err(hdev, "urb %p submission failed (%d)",
3003 urb, -err);
3004 usb_unanchor_urb(urb);
3005 }
3006
3007 usb_free_urb(urb);
3008
3009 return err;
3010 }
3011
btusb_mtk_hci_wmt_sync(struct hci_dev * hdev,struct btmtk_hci_wmt_params * wmt_params)3012 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
3013 struct btmtk_hci_wmt_params *wmt_params)
3014 {
3015 struct btusb_data *data = hci_get_drvdata(hdev);
3016 struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
3017 u32 hlen, status = BTMTK_WMT_INVALID;
3018 struct btmtk_hci_wmt_evt *wmt_evt;
3019 struct btmtk_hci_wmt_cmd *wc;
3020 struct btmtk_wmt_hdr *hdr;
3021 int err;
3022
3023 /* Send the WMT command and wait until the WMT event returns */
3024 hlen = sizeof(*hdr) + wmt_params->dlen;
3025 if (hlen > 255)
3026 return -EINVAL;
3027
3028 wc = kzalloc(hlen, GFP_KERNEL);
3029 if (!wc)
3030 return -ENOMEM;
3031
3032 hdr = &wc->hdr;
3033 hdr->dir = 1;
3034 hdr->op = wmt_params->op;
3035 hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
3036 hdr->flag = wmt_params->flag;
3037 memcpy(wc->data, wmt_params->data, wmt_params->dlen);
3038
3039 set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
3040
3041 /* WMT cmd/event doesn't follow up the generic HCI cmd/event handling,
3042 * it needs constantly polling control pipe until the host received the
3043 * WMT event, thus, we should require to specifically acquire PM counter
3044 * on the USB to prevent the interface from entering auto suspended
3045 * while WMT cmd/event in progress.
3046 */
3047 err = usb_autopm_get_interface(data->intf);
3048 if (err < 0)
3049 goto err_free_wc;
3050
3051 err = __hci_cmd_send(hdev, 0xfc6f, hlen, wc);
3052
3053 if (err < 0) {
3054 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
3055 usb_autopm_put_interface(data->intf);
3056 goto err_free_wc;
3057 }
3058
3059 /* Submit control IN URB on demand to process the WMT event */
3060 err = btusb_mtk_submit_wmt_recv_urb(hdev);
3061
3062 usb_autopm_put_interface(data->intf);
3063
3064 if (err < 0)
3065 return err;
3066
3067 /* The vendor specific WMT commands are all answered by a vendor
3068 * specific event and will have the Command Status or Command
3069 * Complete as with usual HCI command flow control.
3070 *
3071 * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
3072 * state to be cleared. The driver specific event receive routine
3073 * will clear that state and with that indicate completion of the
3074 * WMT command.
3075 */
3076 err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
3077 TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
3078 if (err == -EINTR) {
3079 bt_dev_err(hdev, "Execution of wmt command interrupted");
3080 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
3081 goto err_free_wc;
3082 }
3083
3084 if (err) {
3085 bt_dev_err(hdev, "Execution of wmt command timed out");
3086 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
3087 err = -ETIMEDOUT;
3088 goto err_free_wc;
3089 }
3090
3091 /* Parse and handle the return WMT event */
3092 wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
3093 if (wmt_evt->whdr.op != hdr->op) {
3094 bt_dev_err(hdev, "Wrong op received %d expected %d",
3095 wmt_evt->whdr.op, hdr->op);
3096 err = -EIO;
3097 goto err_free_skb;
3098 }
3099
3100 switch (wmt_evt->whdr.op) {
3101 case BTMTK_WMT_SEMAPHORE:
3102 if (wmt_evt->whdr.flag == 2)
3103 status = BTMTK_WMT_PATCH_UNDONE;
3104 else
3105 status = BTMTK_WMT_PATCH_DONE;
3106 break;
3107 case BTMTK_WMT_FUNC_CTRL:
3108 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
3109 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
3110 status = BTMTK_WMT_ON_DONE;
3111 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
3112 status = BTMTK_WMT_ON_PROGRESS;
3113 else
3114 status = BTMTK_WMT_ON_UNDONE;
3115 break;
3116 }
3117
3118 if (wmt_params->status)
3119 *wmt_params->status = status;
3120
3121 err_free_skb:
3122 kfree_skb(data->evt_skb);
3123 data->evt_skb = NULL;
3124 err_free_wc:
3125 kfree(wc);
3126 return err;
3127 }
3128
btusb_mtk_setup_firmware(struct hci_dev * hdev,const char * fwname)3129 static int btusb_mtk_setup_firmware(struct hci_dev *hdev, const char *fwname)
3130 {
3131 struct btmtk_hci_wmt_params wmt_params;
3132 const struct firmware *fw;
3133 const u8 *fw_ptr;
3134 size_t fw_size;
3135 int err, dlen;
3136 u8 flag, param;
3137
3138 err = request_firmware(&fw, fwname, &hdev->dev);
3139 if (err < 0) {
3140 bt_dev_err(hdev, "Failed to load firmware file (%d)", err);
3141 return err;
3142 }
3143
3144 /* Power on data RAM the firmware relies on. */
3145 param = 1;
3146 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3147 wmt_params.flag = 3;
3148 wmt_params.dlen = sizeof(param);
3149 wmt_params.data = ¶m;
3150 wmt_params.status = NULL;
3151
3152 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3153 if (err < 0) {
3154 bt_dev_err(hdev, "Failed to power on data RAM (%d)", err);
3155 goto err_release_fw;
3156 }
3157
3158 fw_ptr = fw->data;
3159 fw_size = fw->size;
3160
3161 /* The size of patch header is 30 bytes, should be skip */
3162 if (fw_size < 30) {
3163 err = -EINVAL;
3164 goto err_release_fw;
3165 }
3166
3167 fw_size -= 30;
3168 fw_ptr += 30;
3169 flag = 1;
3170
3171 wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
3172 wmt_params.status = NULL;
3173
3174 while (fw_size > 0) {
3175 dlen = min_t(int, 250, fw_size);
3176
3177 /* Tell deivice the position in sequence */
3178 if (fw_size - dlen <= 0)
3179 flag = 3;
3180 else if (fw_size < fw->size - 30)
3181 flag = 2;
3182
3183 wmt_params.flag = flag;
3184 wmt_params.dlen = dlen;
3185 wmt_params.data = fw_ptr;
3186
3187 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3188 if (err < 0) {
3189 bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
3190 err);
3191 goto err_release_fw;
3192 }
3193
3194 fw_size -= dlen;
3195 fw_ptr += dlen;
3196 }
3197
3198 wmt_params.op = BTMTK_WMT_RST;
3199 wmt_params.flag = 4;
3200 wmt_params.dlen = 0;
3201 wmt_params.data = NULL;
3202 wmt_params.status = NULL;
3203
3204 /* Activate funciton the firmware providing to */
3205 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3206 if (err < 0) {
3207 bt_dev_err(hdev, "Failed to send wmt rst (%d)", err);
3208 goto err_release_fw;
3209 }
3210
3211 /* Wait a few moments for firmware activation done */
3212 usleep_range(10000, 12000);
3213
3214 err_release_fw:
3215 release_firmware(fw);
3216
3217 return err;
3218 }
3219
btusb_mtk_func_query(struct hci_dev * hdev)3220 static int btusb_mtk_func_query(struct hci_dev *hdev)
3221 {
3222 struct btmtk_hci_wmt_params wmt_params;
3223 int status, err;
3224 u8 param = 0;
3225
3226 /* Query whether the function is enabled */
3227 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3228 wmt_params.flag = 4;
3229 wmt_params.dlen = sizeof(param);
3230 wmt_params.data = ¶m;
3231 wmt_params.status = &status;
3232
3233 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3234 if (err < 0) {
3235 bt_dev_err(hdev, "Failed to query function status (%d)", err);
3236 return err;
3237 }
3238
3239 return status;
3240 }
3241
btusb_mtk_reg_read(struct btusb_data * data,u32 reg,u32 * val)3242 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
3243 {
3244 int pipe, err, size = sizeof(u32);
3245 void *buf;
3246
3247 buf = kzalloc(size, GFP_KERNEL);
3248 if (!buf)
3249 return -ENOMEM;
3250
3251 pipe = usb_rcvctrlpipe(data->udev, 0);
3252 err = usb_control_msg(data->udev, pipe, 0x63,
3253 USB_TYPE_VENDOR | USB_DIR_IN,
3254 reg >> 16, reg & 0xffff,
3255 buf, size, USB_CTRL_SET_TIMEOUT);
3256 if (err < 0)
3257 goto err_free_buf;
3258
3259 *val = get_unaligned_le32(buf);
3260
3261 err_free_buf:
3262 kfree(buf);
3263
3264 return err;
3265 }
3266
btusb_mtk_id_get(struct btusb_data * data,u32 reg,u32 * id)3267 static int btusb_mtk_id_get(struct btusb_data *data, u32 reg, u32 *id)
3268 {
3269 return btusb_mtk_reg_read(data, reg, id);
3270 }
3271
btusb_mtk_setup(struct hci_dev * hdev)3272 static int btusb_mtk_setup(struct hci_dev *hdev)
3273 {
3274 struct btusb_data *data = hci_get_drvdata(hdev);
3275 struct btmtk_hci_wmt_params wmt_params;
3276 ktime_t calltime, delta, rettime;
3277 struct btmtk_tci_sleep tci_sleep;
3278 unsigned long long duration;
3279 struct sk_buff *skb;
3280 const char *fwname;
3281 int err, status;
3282 u32 dev_id;
3283 u8 param;
3284
3285 calltime = ktime_get();
3286
3287 err = btusb_mtk_id_get(data, 0x80000008, &dev_id);
3288 if (err < 0) {
3289 bt_dev_err(hdev, "Failed to get device id (%d)", err);
3290 return err;
3291 }
3292
3293 switch (dev_id) {
3294 case 0x7663:
3295 fwname = FIRMWARE_MT7663;
3296 break;
3297 case 0x7668:
3298 fwname = FIRMWARE_MT7668;
3299 break;
3300 default:
3301 bt_dev_err(hdev, "Unsupported support hardware variant (%08x)",
3302 dev_id);
3303 return -ENODEV;
3304 }
3305
3306 /* Query whether the firmware is already download */
3307 wmt_params.op = BTMTK_WMT_SEMAPHORE;
3308 wmt_params.flag = 1;
3309 wmt_params.dlen = 0;
3310 wmt_params.data = NULL;
3311 wmt_params.status = &status;
3312
3313 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3314 if (err < 0) {
3315 bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
3316 return err;
3317 }
3318
3319 if (status == BTMTK_WMT_PATCH_DONE) {
3320 bt_dev_info(hdev, "firmware already downloaded");
3321 goto ignore_setup_fw;
3322 }
3323
3324 /* Setup a firmware which the device definitely requires */
3325 err = btusb_mtk_setup_firmware(hdev, fwname);
3326 if (err < 0)
3327 return err;
3328
3329 ignore_setup_fw:
3330 err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
3331 status < 0 || status != BTMTK_WMT_ON_PROGRESS,
3332 2000, 5000000);
3333 /* -ETIMEDOUT happens */
3334 if (err < 0)
3335 return err;
3336
3337 /* The other errors happen in btusb_mtk_func_query */
3338 if (status < 0)
3339 return status;
3340
3341 if (status == BTMTK_WMT_ON_DONE) {
3342 bt_dev_info(hdev, "function already on");
3343 goto ignore_func_on;
3344 }
3345
3346 /* Enable Bluetooth protocol */
3347 param = 1;
3348 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3349 wmt_params.flag = 0;
3350 wmt_params.dlen = sizeof(param);
3351 wmt_params.data = ¶m;
3352 wmt_params.status = NULL;
3353
3354 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3355 if (err < 0) {
3356 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3357 return err;
3358 }
3359
3360 ignore_func_on:
3361 /* Apply the low power environment setup */
3362 tci_sleep.mode = 0x5;
3363 tci_sleep.duration = cpu_to_le16(0x640);
3364 tci_sleep.host_duration = cpu_to_le16(0x640);
3365 tci_sleep.host_wakeup_pin = 0;
3366 tci_sleep.time_compensation = 0;
3367
3368 skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
3369 HCI_INIT_TIMEOUT);
3370 if (IS_ERR(skb)) {
3371 err = PTR_ERR(skb);
3372 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
3373 return err;
3374 }
3375 kfree_skb(skb);
3376
3377 rettime = ktime_get();
3378 delta = ktime_sub(rettime, calltime);
3379 duration = (unsigned long long)ktime_to_ns(delta) >> 10;
3380
3381 bt_dev_info(hdev, "Device setup in %llu usecs", duration);
3382
3383 return 0;
3384 }
3385
btusb_mtk_shutdown(struct hci_dev * hdev)3386 static int btusb_mtk_shutdown(struct hci_dev *hdev)
3387 {
3388 struct btmtk_hci_wmt_params wmt_params;
3389 u8 param = 0;
3390 int err;
3391
3392 /* Disable the device */
3393 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3394 wmt_params.flag = 0;
3395 wmt_params.dlen = sizeof(param);
3396 wmt_params.data = ¶m;
3397 wmt_params.status = NULL;
3398
3399 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3400 if (err < 0) {
3401 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3402 return err;
3403 }
3404
3405 return 0;
3406 }
3407
3408 MODULE_FIRMWARE(FIRMWARE_MT7663);
3409 MODULE_FIRMWARE(FIRMWARE_MT7668);
3410
3411 #ifdef CONFIG_PM
3412 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
marvell_config_oob_wake(struct hci_dev * hdev)3413 static int marvell_config_oob_wake(struct hci_dev *hdev)
3414 {
3415 struct sk_buff *skb;
3416 struct btusb_data *data = hci_get_drvdata(hdev);
3417 struct device *dev = &data->udev->dev;
3418 u16 pin, gap, opcode;
3419 int ret;
3420 u8 cmd[5];
3421
3422 /* Move on if no wakeup pin specified */
3423 if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
3424 of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
3425 return 0;
3426
3427 /* Vendor specific command to configure a GPIO as wake-up pin */
3428 opcode = hci_opcode_pack(0x3F, 0x59);
3429 cmd[0] = opcode & 0xFF;
3430 cmd[1] = opcode >> 8;
3431 cmd[2] = 2; /* length of parameters that follow */
3432 cmd[3] = pin;
3433 cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
3434
3435 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
3436 if (!skb) {
3437 bt_dev_err(hdev, "%s: No memory\n", __func__);
3438 return -ENOMEM;
3439 }
3440
3441 skb_put_data(skb, cmd, sizeof(cmd));
3442 hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
3443
3444 ret = btusb_send_frame(hdev, skb);
3445 if (ret) {
3446 bt_dev_err(hdev, "%s: configuration failed\n", __func__);
3447 kfree_skb(skb);
3448 return ret;
3449 }
3450
3451 return 0;
3452 }
3453 #endif
3454
btusb_set_bdaddr_marvell(struct hci_dev * hdev,const bdaddr_t * bdaddr)3455 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
3456 const bdaddr_t *bdaddr)
3457 {
3458 struct sk_buff *skb;
3459 u8 buf[8];
3460 long ret;
3461
3462 buf[0] = 0xfe;
3463 buf[1] = sizeof(bdaddr_t);
3464 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
3465
3466 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3467 if (IS_ERR(skb)) {
3468 ret = PTR_ERR(skb);
3469 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
3470 ret);
3471 return ret;
3472 }
3473 kfree_skb(skb);
3474
3475 return 0;
3476 }
3477
btusb_set_bdaddr_ath3012(struct hci_dev * hdev,const bdaddr_t * bdaddr)3478 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3479 const bdaddr_t *bdaddr)
3480 {
3481 struct sk_buff *skb;
3482 u8 buf[10];
3483 long ret;
3484
3485 buf[0] = 0x01;
3486 buf[1] = 0x01;
3487 buf[2] = 0x00;
3488 buf[3] = sizeof(bdaddr_t);
3489 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3490
3491 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3492 if (IS_ERR(skb)) {
3493 ret = PTR_ERR(skb);
3494 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3495 return ret;
3496 }
3497 kfree_skb(skb);
3498
3499 return 0;
3500 }
3501
btusb_set_bdaddr_wcn6855(struct hci_dev * hdev,const bdaddr_t * bdaddr)3502 static int btusb_set_bdaddr_wcn6855(struct hci_dev *hdev,
3503 const bdaddr_t *bdaddr)
3504 {
3505 struct sk_buff *skb;
3506 u8 buf[6];
3507 long ret;
3508
3509 memcpy(buf, bdaddr, sizeof(bdaddr_t));
3510
3511 skb = __hci_cmd_sync_ev(hdev, 0xfc14, sizeof(buf), buf,
3512 HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
3513 if (IS_ERR(skb)) {
3514 ret = PTR_ERR(skb);
3515 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3516 return ret;
3517 }
3518 kfree_skb(skb);
3519
3520 return 0;
3521 }
3522
3523 #define QCA_DFU_PACKET_LEN 4096
3524
3525 #define QCA_GET_TARGET_VERSION 0x09
3526 #define QCA_CHECK_STATUS 0x05
3527 #define QCA_DFU_DOWNLOAD 0x01
3528
3529 #define QCA_SYSCFG_UPDATED 0x40
3530 #define QCA_PATCH_UPDATED 0x80
3531 #define QCA_DFU_TIMEOUT 3000
3532
3533 struct qca_version {
3534 __le32 rom_version;
3535 __le32 patch_version;
3536 __le32 ram_version;
3537 __le32 ref_clock;
3538 __u8 reserved[4];
3539 } __packed;
3540
3541 struct qca_rampatch_version {
3542 __le16 rom_version_high;
3543 __le16 rom_version_low;
3544 __le16 patch_version;
3545 } __packed;
3546
3547 struct qca_device_info {
3548 u32 rom_version;
3549 u8 rampatch_hdr; /* length of header in rampatch */
3550 u8 nvm_hdr; /* length of header in NVM */
3551 u8 ver_offset; /* offset of version structure in rampatch */
3552 };
3553
3554 static const struct qca_device_info qca_devices_table[] = {
3555 { 0x00000100, 20, 4, 8 }, /* Rome 1.0 */
3556 { 0x00000101, 20, 4, 8 }, /* Rome 1.1 */
3557 { 0x00000200, 28, 4, 16 }, /* Rome 2.0 */
3558 { 0x00000201, 28, 4, 16 }, /* Rome 2.1 */
3559 { 0x00000300, 28, 4, 16 }, /* Rome 3.0 */
3560 { 0x00000302, 28, 4, 16 }, /* Rome 3.2 */
3561 { 0x00130100, 40, 4, 16 }, /* WCN6855 1.0 */
3562 { 0x00130200, 40, 4, 16 }, /* WCN6855 2.0 */
3563 };
3564
btusb_qca_send_vendor_req(struct usb_device * udev,u8 request,void * data,u16 size)3565 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
3566 void *data, u16 size)
3567 {
3568 int pipe, err;
3569 u8 *buf;
3570
3571 buf = kmalloc(size, GFP_KERNEL);
3572 if (!buf)
3573 return -ENOMEM;
3574
3575 /* Found some of USB hosts have IOT issues with ours so that we should
3576 * not wait until HCI layer is ready.
3577 */
3578 pipe = usb_rcvctrlpipe(udev, 0);
3579 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
3580 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3581 if (err < 0) {
3582 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
3583 goto done;
3584 }
3585
3586 memcpy(data, buf, size);
3587
3588 done:
3589 kfree(buf);
3590
3591 return err;
3592 }
3593
btusb_setup_qca_download_fw(struct hci_dev * hdev,const struct firmware * firmware,size_t hdr_size)3594 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
3595 const struct firmware *firmware,
3596 size_t hdr_size)
3597 {
3598 struct btusb_data *btdata = hci_get_drvdata(hdev);
3599 struct usb_device *udev = btdata->udev;
3600 size_t count, size, sent = 0;
3601 int pipe, len, err;
3602 u8 *buf;
3603
3604 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
3605 if (!buf)
3606 return -ENOMEM;
3607
3608 count = firmware->size;
3609
3610 size = min_t(size_t, count, hdr_size);
3611 memcpy(buf, firmware->data, size);
3612
3613 /* USB patches should go down to controller through USB path
3614 * because binary format fits to go down through USB channel.
3615 * USB control path is for patching headers and USB bulk is for
3616 * patch body.
3617 */
3618 pipe = usb_sndctrlpipe(udev, 0);
3619 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
3620 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3621 if (err < 0) {
3622 bt_dev_err(hdev, "Failed to send headers (%d)", err);
3623 goto done;
3624 }
3625
3626 sent += size;
3627 count -= size;
3628
3629 /* ep2 need time to switch from function acl to function dfu,
3630 * so we add 20ms delay here.
3631 */
3632 msleep(20);
3633
3634 while (count) {
3635 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
3636
3637 memcpy(buf, firmware->data + sent, size);
3638
3639 pipe = usb_sndbulkpipe(udev, 0x02);
3640 err = usb_bulk_msg(udev, pipe, buf, size, &len,
3641 QCA_DFU_TIMEOUT);
3642 if (err < 0) {
3643 bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
3644 sent, firmware->size, err);
3645 break;
3646 }
3647
3648 if (size != len) {
3649 bt_dev_err(hdev, "Failed to get bulk buffer");
3650 err = -EILSEQ;
3651 break;
3652 }
3653
3654 sent += size;
3655 count -= size;
3656 }
3657
3658 done:
3659 kfree(buf);
3660 return err;
3661 }
3662
btusb_setup_qca_load_rampatch(struct hci_dev * hdev,struct qca_version * ver,const struct qca_device_info * info)3663 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
3664 struct qca_version *ver,
3665 const struct qca_device_info *info)
3666 {
3667 struct qca_rampatch_version *rver;
3668 const struct firmware *fw;
3669 u32 ver_rom, ver_patch, rver_rom;
3670 u16 rver_rom_low, rver_rom_high, rver_patch;
3671 char fwname[64];
3672 int err;
3673
3674 ver_rom = le32_to_cpu(ver->rom_version);
3675 ver_patch = le32_to_cpu(ver->patch_version);
3676
3677 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
3678
3679 err = request_firmware(&fw, fwname, &hdev->dev);
3680 if (err) {
3681 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
3682 fwname, err);
3683 return err;
3684 }
3685
3686 bt_dev_info(hdev, "using rampatch file: %s", fwname);
3687
3688 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
3689 rver_rom_low = le16_to_cpu(rver->rom_version_low);
3690 rver_patch = le16_to_cpu(rver->patch_version);
3691
3692 if (ver_rom & ~0xffffU) {
3693 rver_rom_high = le16_to_cpu(rver->rom_version_high);
3694 rver_rom = le32_to_cpu(rver_rom_high << 16 | rver_rom_low);
3695 } else {
3696 rver_rom = rver_rom_low;
3697 }
3698
3699 bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
3700 "firmware rome 0x%x build 0x%x",
3701 rver_rom, rver_patch, ver_rom, ver_patch);
3702
3703 if (rver_rom != ver_rom || rver_patch <= ver_patch) {
3704 bt_dev_err(hdev, "rampatch file version did not match with firmware");
3705 err = -EINVAL;
3706 goto done;
3707 }
3708
3709 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
3710
3711 done:
3712 release_firmware(fw);
3713
3714 return err;
3715 }
3716
btusb_setup_qca_load_nvm(struct hci_dev * hdev,struct qca_version * ver,const struct qca_device_info * info)3717 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
3718 struct qca_version *ver,
3719 const struct qca_device_info *info)
3720 {
3721 const struct firmware *fw;
3722 char fwname[64];
3723 int err;
3724
3725 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
3726 le32_to_cpu(ver->rom_version));
3727
3728 err = request_firmware(&fw, fwname, &hdev->dev);
3729 if (err) {
3730 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
3731 fwname, err);
3732 return err;
3733 }
3734
3735 bt_dev_info(hdev, "using NVM file: %s", fwname);
3736
3737 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
3738
3739 release_firmware(fw);
3740
3741 return err;
3742 }
3743
3744 /* identify the ROM version and check whether patches are needed */
btusb_qca_need_patch(struct usb_device * udev)3745 static bool btusb_qca_need_patch(struct usb_device *udev)
3746 {
3747 struct qca_version ver;
3748
3749 if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3750 sizeof(ver)) < 0)
3751 return false;
3752 /* only low ROM versions need patches */
3753 return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
3754 }
3755
btusb_setup_qca(struct hci_dev * hdev)3756 static int btusb_setup_qca(struct hci_dev *hdev)
3757 {
3758 struct btusb_data *btdata = hci_get_drvdata(hdev);
3759 struct usb_device *udev = btdata->udev;
3760 const struct qca_device_info *info = NULL;
3761 struct qca_version ver;
3762 u32 ver_rom;
3763 u8 status;
3764 int i, err;
3765
3766 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3767 sizeof(ver));
3768 if (err < 0)
3769 return err;
3770
3771 ver_rom = le32_to_cpu(ver.rom_version);
3772
3773 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
3774 if (ver_rom == qca_devices_table[i].rom_version)
3775 info = &qca_devices_table[i];
3776 }
3777 if (!info) {
3778 /* If the rom_version is not matched in the qca_devices_table
3779 * and the high ROM version is not zero, we assume this chip no
3780 * need to load the rampatch and nvm.
3781 */
3782 if (ver_rom & ~0xffffU)
3783 return 0;
3784
3785 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
3786 return -ENODEV;
3787 }
3788
3789 err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
3790 sizeof(status));
3791 if (err < 0)
3792 return err;
3793
3794 if (!(status & QCA_PATCH_UPDATED)) {
3795 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3796 if (err < 0)
3797 return err;
3798 }
3799
3800 if (!(status & QCA_SYSCFG_UPDATED)) {
3801 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3802 if (err < 0)
3803 return err;
3804 }
3805
3806 return 0;
3807 }
3808
__set_diag_interface(struct hci_dev * hdev)3809 static inline int __set_diag_interface(struct hci_dev *hdev)
3810 {
3811 struct btusb_data *data = hci_get_drvdata(hdev);
3812 struct usb_interface *intf = data->diag;
3813 int i;
3814
3815 if (!data->diag)
3816 return -ENODEV;
3817
3818 data->diag_tx_ep = NULL;
3819 data->diag_rx_ep = NULL;
3820
3821 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3822 struct usb_endpoint_descriptor *ep_desc;
3823
3824 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3825
3826 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3827 data->diag_tx_ep = ep_desc;
3828 continue;
3829 }
3830
3831 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3832 data->diag_rx_ep = ep_desc;
3833 continue;
3834 }
3835 }
3836
3837 if (!data->diag_tx_ep || !data->diag_rx_ep) {
3838 bt_dev_err(hdev, "invalid diagnostic descriptors");
3839 return -ENODEV;
3840 }
3841
3842 return 0;
3843 }
3844
alloc_diag_urb(struct hci_dev * hdev,bool enable)3845 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
3846 {
3847 struct btusb_data *data = hci_get_drvdata(hdev);
3848 struct sk_buff *skb;
3849 struct urb *urb;
3850 unsigned int pipe;
3851
3852 if (!data->diag_tx_ep)
3853 return ERR_PTR(-ENODEV);
3854
3855 urb = usb_alloc_urb(0, GFP_KERNEL);
3856 if (!urb)
3857 return ERR_PTR(-ENOMEM);
3858
3859 skb = bt_skb_alloc(2, GFP_KERNEL);
3860 if (!skb) {
3861 usb_free_urb(urb);
3862 return ERR_PTR(-ENOMEM);
3863 }
3864
3865 skb_put_u8(skb, 0xf0);
3866 skb_put_u8(skb, enable);
3867
3868 pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
3869
3870 usb_fill_bulk_urb(urb, data->udev, pipe,
3871 skb->data, skb->len, btusb_tx_complete, skb);
3872
3873 skb->dev = (void *)hdev;
3874
3875 return urb;
3876 }
3877
btusb_bcm_set_diag(struct hci_dev * hdev,bool enable)3878 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
3879 {
3880 struct btusb_data *data = hci_get_drvdata(hdev);
3881 struct urb *urb;
3882
3883 if (!data->diag)
3884 return -ENODEV;
3885
3886 if (!test_bit(HCI_RUNNING, &hdev->flags))
3887 return -ENETDOWN;
3888
3889 urb = alloc_diag_urb(hdev, enable);
3890 if (IS_ERR(urb))
3891 return PTR_ERR(urb);
3892
3893 return submit_or_queue_tx_urb(hdev, urb);
3894 }
3895
3896 #ifdef CONFIG_PM
btusb_oob_wake_handler(int irq,void * priv)3897 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
3898 {
3899 struct btusb_data *data = priv;
3900
3901 pm_wakeup_event(&data->udev->dev, 0);
3902 pm_system_wakeup();
3903
3904 /* Disable only if not already disabled (keep it balanced) */
3905 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3906 disable_irq_nosync(irq);
3907 disable_irq_wake(irq);
3908 }
3909 return IRQ_HANDLED;
3910 }
3911
3912 static const struct of_device_id btusb_match_table[] = {
3913 { .compatible = "usb1286,204e" },
3914 { .compatible = "usbcf3,e300" }, /* QCA6174A */
3915 { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
3916 { }
3917 };
3918 MODULE_DEVICE_TABLE(of, btusb_match_table);
3919
3920 /* Use an oob wakeup pin? */
btusb_config_oob_wake(struct hci_dev * hdev)3921 static int btusb_config_oob_wake(struct hci_dev *hdev)
3922 {
3923 struct btusb_data *data = hci_get_drvdata(hdev);
3924 struct device *dev = &data->udev->dev;
3925 int irq, ret;
3926
3927 clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3928
3929 if (!of_match_device(btusb_match_table, dev))
3930 return 0;
3931
3932 /* Move on if no IRQ specified */
3933 irq = of_irq_get_byname(dev->of_node, "wakeup");
3934 if (irq <= 0) {
3935 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
3936 return 0;
3937 }
3938
3939 irq_set_status_flags(irq, IRQ_NOAUTOEN);
3940 ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
3941 0, "OOB Wake-on-BT", data);
3942 if (ret) {
3943 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
3944 return ret;
3945 }
3946
3947 ret = device_init_wakeup(dev, true);
3948 if (ret) {
3949 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
3950 return ret;
3951 }
3952
3953 data->oob_wake_irq = irq;
3954 bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
3955 return 0;
3956 }
3957 #endif
3958
btusb_check_needs_reset_resume(struct usb_interface * intf)3959 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
3960 {
3961 if (dmi_check_system(btusb_needs_reset_resume_table))
3962 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3963 }
3964
btusb_prevent_wake(struct hci_dev * hdev)3965 static bool btusb_prevent_wake(struct hci_dev *hdev)
3966 {
3967 struct btusb_data *data = hci_get_drvdata(hdev);
3968
3969 if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
3970 return true;
3971
3972 return !device_may_wakeup(&data->udev->dev);
3973 }
3974
btusb_probe(struct usb_interface * intf,const struct usb_device_id * id)3975 static int btusb_probe(struct usb_interface *intf,
3976 const struct usb_device_id *id)
3977 {
3978 struct usb_endpoint_descriptor *ep_desc;
3979 struct gpio_desc *reset_gpio;
3980 struct btusb_data *data;
3981 struct hci_dev *hdev;
3982 unsigned ifnum_base;
3983 int i, err;
3984
3985 BT_DBG("intf %p id %p", intf, id);
3986
3987 /* interface numbers are hardcoded in the spec */
3988 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
3989 if (!(id->driver_info & BTUSB_IFNUM_2))
3990 return -ENODEV;
3991 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
3992 return -ENODEV;
3993 }
3994
3995 ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
3996
3997 if (!id->driver_info) {
3998 const struct usb_device_id *match;
3999
4000 match = usb_match_id(intf, blacklist_table);
4001 if (match)
4002 id = match;
4003 }
4004
4005 if (id->driver_info == BTUSB_IGNORE)
4006 return -ENODEV;
4007
4008 if (id->driver_info & BTUSB_ATH3012) {
4009 struct usb_device *udev = interface_to_usbdev(intf);
4010
4011 /* Old firmware would otherwise let ath3k driver load
4012 * patch and sysconfig files
4013 */
4014 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
4015 !btusb_qca_need_patch(udev))
4016 return -ENODEV;
4017 }
4018
4019 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
4020 if (!data)
4021 return -ENOMEM;
4022
4023 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
4024 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
4025
4026 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
4027 data->intr_ep = ep_desc;
4028 continue;
4029 }
4030
4031 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
4032 data->bulk_tx_ep = ep_desc;
4033 continue;
4034 }
4035
4036 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
4037 data->bulk_rx_ep = ep_desc;
4038 continue;
4039 }
4040 }
4041
4042 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
4043 return -ENODEV;
4044
4045 if (id->driver_info & BTUSB_AMP) {
4046 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
4047 data->cmdreq = 0x2b;
4048 } else {
4049 data->cmdreq_type = USB_TYPE_CLASS;
4050 data->cmdreq = 0x00;
4051 }
4052
4053 data->udev = interface_to_usbdev(intf);
4054 data->intf = intf;
4055
4056 INIT_WORK(&data->work, btusb_work);
4057 INIT_WORK(&data->waker, btusb_waker);
4058 init_usb_anchor(&data->deferred);
4059 init_usb_anchor(&data->tx_anchor);
4060 spin_lock_init(&data->txlock);
4061
4062 init_usb_anchor(&data->intr_anchor);
4063 init_usb_anchor(&data->bulk_anchor);
4064 init_usb_anchor(&data->isoc_anchor);
4065 init_usb_anchor(&data->diag_anchor);
4066 init_usb_anchor(&data->ctrl_anchor);
4067 spin_lock_init(&data->rxlock);
4068
4069 if (id->driver_info & BTUSB_INTEL_NEW) {
4070 data->recv_event = btusb_recv_event_intel;
4071 data->recv_bulk = btusb_recv_bulk_intel;
4072 set_bit(BTUSB_BOOTLOADER, &data->flags);
4073 } else {
4074 data->recv_event = hci_recv_frame;
4075 data->recv_bulk = btusb_recv_bulk;
4076 }
4077
4078 hdev = hci_alloc_dev();
4079 if (!hdev)
4080 return -ENOMEM;
4081
4082 hdev->bus = HCI_USB;
4083 hci_set_drvdata(hdev, data);
4084
4085 if (id->driver_info & BTUSB_AMP)
4086 hdev->dev_type = HCI_AMP;
4087 else
4088 hdev->dev_type = HCI_PRIMARY;
4089
4090 data->hdev = hdev;
4091
4092 SET_HCIDEV_DEV(hdev, &intf->dev);
4093
4094 reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
4095 GPIOD_OUT_LOW);
4096 if (IS_ERR(reset_gpio)) {
4097 err = PTR_ERR(reset_gpio);
4098 goto out_free_dev;
4099 } else if (reset_gpio) {
4100 data->reset_gpio = reset_gpio;
4101 }
4102
4103 hdev->open = btusb_open;
4104 hdev->close = btusb_close;
4105 hdev->flush = btusb_flush;
4106 hdev->send = btusb_send_frame;
4107 hdev->notify = btusb_notify;
4108 hdev->prevent_wake = btusb_prevent_wake;
4109
4110 #ifdef CONFIG_PM
4111 err = btusb_config_oob_wake(hdev);
4112 if (err)
4113 goto out_free_dev;
4114
4115 /* Marvell devices may need a specific chip configuration */
4116 if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
4117 err = marvell_config_oob_wake(hdev);
4118 if (err)
4119 goto out_free_dev;
4120 }
4121 #endif
4122 if (id->driver_info & BTUSB_CW6622)
4123 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
4124
4125 if (id->driver_info & BTUSB_BCM2045)
4126 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
4127
4128 if (id->driver_info & BTUSB_BCM92035)
4129 hdev->setup = btusb_setup_bcm92035;
4130
4131 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
4132 (id->driver_info & BTUSB_BCM_PATCHRAM)) {
4133 hdev->manufacturer = 15;
4134 hdev->setup = btbcm_setup_patchram;
4135 hdev->set_diag = btusb_bcm_set_diag;
4136 hdev->set_bdaddr = btbcm_set_bdaddr;
4137
4138 /* Broadcom LM_DIAG Interface numbers are hardcoded */
4139 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4140 }
4141
4142 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
4143 (id->driver_info & BTUSB_BCM_APPLE)) {
4144 hdev->manufacturer = 15;
4145 hdev->setup = btbcm_setup_apple;
4146 hdev->set_diag = btusb_bcm_set_diag;
4147
4148 /* Broadcom LM_DIAG Interface numbers are hardcoded */
4149 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4150 }
4151
4152 if (id->driver_info & BTUSB_INTEL) {
4153 hdev->manufacturer = 2;
4154 hdev->setup = btusb_setup_intel;
4155 hdev->shutdown = btusb_shutdown_intel;
4156 hdev->set_diag = btintel_set_diag_mfg;
4157 hdev->set_bdaddr = btintel_set_bdaddr;
4158 hdev->cmd_timeout = btusb_intel_cmd_timeout;
4159 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4160 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4161 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
4162 }
4163
4164 if (id->driver_info & BTUSB_INTEL_NEW) {
4165 hdev->manufacturer = 2;
4166 hdev->send = btusb_send_frame_intel;
4167 hdev->setup = btusb_setup_intel_new;
4168 hdev->shutdown = btusb_shutdown_intel_new;
4169 hdev->hw_error = btintel_hw_error;
4170 hdev->set_diag = btintel_set_diag;
4171 hdev->set_bdaddr = btintel_set_bdaddr;
4172 hdev->cmd_timeout = btusb_intel_cmd_timeout;
4173 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4174 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4175 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
4176 }
4177
4178 if (id->driver_info & BTUSB_MARVELL)
4179 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
4180
4181 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) &&
4182 (id->driver_info & BTUSB_MEDIATEK)) {
4183 hdev->setup = btusb_mtk_setup;
4184 hdev->shutdown = btusb_mtk_shutdown;
4185 hdev->manufacturer = 70;
4186 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
4187 }
4188
4189 if (id->driver_info & BTUSB_SWAVE) {
4190 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
4191 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
4192 }
4193
4194 if (id->driver_info & BTUSB_INTEL_BOOT) {
4195 hdev->manufacturer = 2;
4196 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4197 }
4198
4199 if (id->driver_info & BTUSB_ATH3012) {
4200 data->setup_on_usb = btusb_setup_qca;
4201 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4202 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4203 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4204 }
4205
4206 if (id->driver_info & BTUSB_QCA_ROME) {
4207 data->setup_on_usb = btusb_setup_qca;
4208 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4209 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4210 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4211 btusb_check_needs_reset_resume(intf);
4212 }
4213
4214 if (id->driver_info & BTUSB_QCA_WCN6855) {
4215 data->setup_on_usb = btusb_setup_qca;
4216 hdev->set_bdaddr = btusb_set_bdaddr_wcn6855;
4217 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4218 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4219 }
4220
4221 if (id->driver_info & BTUSB_AMP) {
4222 /* AMP controllers do not support SCO packets */
4223 data->isoc = NULL;
4224 } else {
4225 /* Interface orders are hardcoded in the specification */
4226 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
4227 data->isoc_ifnum = ifnum_base + 1;
4228 }
4229
4230 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) &&
4231 (id->driver_info & BTUSB_REALTEK)) {
4232 hdev->setup = btrtl_setup_realtek;
4233 hdev->shutdown = btrtl_shutdown_realtek;
4234 hdev->cmd_timeout = btusb_rtl_cmd_timeout;
4235
4236 /* Realtek devices lose their updated firmware over global
4237 * suspend that means host doesn't send SET_FEATURE
4238 * (DEVICE_REMOTE_WAKEUP)
4239 */
4240 set_bit(BTUSB_WAKEUP_DISABLE, &data->flags);
4241 set_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags);
4242 }
4243
4244 if (!reset)
4245 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4246
4247 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
4248 if (!disable_scofix)
4249 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
4250 }
4251
4252 if (id->driver_info & BTUSB_BROKEN_ISOC)
4253 data->isoc = NULL;
4254
4255 if (id->driver_info & BTUSB_WIDEBAND_SPEECH)
4256 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
4257
4258 if (id->driver_info & BTUSB_VALID_LE_STATES)
4259 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
4260
4261 if (id->driver_info & BTUSB_DIGIANSWER) {
4262 data->cmdreq_type = USB_TYPE_VENDOR;
4263 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4264 }
4265
4266 if (id->driver_info & BTUSB_CSR) {
4267 struct usb_device *udev = data->udev;
4268 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
4269
4270 /* Old firmware would otherwise execute USB reset */
4271 if (bcdDevice < 0x117)
4272 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4273
4274 /* This must be set first in case we disable it for fakes */
4275 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4276
4277 /* Fake CSR devices with broken commands */
4278 if (le16_to_cpu(udev->descriptor.idVendor) == 0x0a12 &&
4279 le16_to_cpu(udev->descriptor.idProduct) == 0x0001)
4280 hdev->setup = btusb_setup_csr;
4281 }
4282
4283 if (id->driver_info & BTUSB_SNIFFER) {
4284 struct usb_device *udev = data->udev;
4285
4286 /* New sniffer firmware has crippled HCI interface */
4287 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
4288 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4289 }
4290
4291 if (id->driver_info & BTUSB_INTEL_BOOT) {
4292 /* A bug in the bootloader causes that interrupt interface is
4293 * only enabled after receiving SetInterface(0, AltSetting=0).
4294 */
4295 err = usb_set_interface(data->udev, 0, 0);
4296 if (err < 0) {
4297 BT_ERR("failed to set interface 0, alt 0 %d", err);
4298 goto out_free_dev;
4299 }
4300 }
4301
4302 if (data->isoc) {
4303 err = usb_driver_claim_interface(&btusb_driver,
4304 data->isoc, data);
4305 if (err < 0)
4306 goto out_free_dev;
4307 }
4308
4309 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) {
4310 if (!usb_driver_claim_interface(&btusb_driver,
4311 data->diag, data))
4312 __set_diag_interface(hdev);
4313 else
4314 data->diag = NULL;
4315 }
4316
4317 if (enable_autosuspend)
4318 usb_enable_autosuspend(data->udev);
4319
4320 err = hci_register_dev(hdev);
4321 if (err < 0)
4322 goto out_free_dev;
4323
4324 usb_set_intfdata(intf, data);
4325
4326 return 0;
4327
4328 out_free_dev:
4329 if (data->reset_gpio)
4330 gpiod_put(data->reset_gpio);
4331 hci_free_dev(hdev);
4332 return err;
4333 }
4334
btusb_disconnect(struct usb_interface * intf)4335 static void btusb_disconnect(struct usb_interface *intf)
4336 {
4337 struct btusb_data *data = usb_get_intfdata(intf);
4338 struct hci_dev *hdev;
4339
4340 BT_DBG("intf %p", intf);
4341
4342 if (!data)
4343 return;
4344
4345 hdev = data->hdev;
4346 usb_set_intfdata(data->intf, NULL);
4347
4348 if (data->isoc)
4349 usb_set_intfdata(data->isoc, NULL);
4350
4351 if (data->diag)
4352 usb_set_intfdata(data->diag, NULL);
4353
4354 hci_unregister_dev(hdev);
4355
4356 if (intf == data->intf) {
4357 if (data->isoc)
4358 usb_driver_release_interface(&btusb_driver, data->isoc);
4359 if (data->diag)
4360 usb_driver_release_interface(&btusb_driver, data->diag);
4361 } else if (intf == data->isoc) {
4362 if (data->diag)
4363 usb_driver_release_interface(&btusb_driver, data->diag);
4364 usb_driver_release_interface(&btusb_driver, data->intf);
4365 } else if (intf == data->diag) {
4366 usb_driver_release_interface(&btusb_driver, data->intf);
4367 if (data->isoc)
4368 usb_driver_release_interface(&btusb_driver, data->isoc);
4369 }
4370
4371 if (data->oob_wake_irq)
4372 device_init_wakeup(&data->udev->dev, false);
4373
4374 if (data->reset_gpio)
4375 gpiod_put(data->reset_gpio);
4376
4377 hci_free_dev(hdev);
4378 }
4379
4380 #ifdef CONFIG_PM
btusb_suspend(struct usb_interface * intf,pm_message_t message)4381 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
4382 {
4383 struct btusb_data *data = usb_get_intfdata(intf);
4384
4385 BT_DBG("intf %p", intf);
4386
4387 if (data->suspend_count++)
4388 return 0;
4389
4390 spin_lock_irq(&data->txlock);
4391 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
4392 set_bit(BTUSB_SUSPENDING, &data->flags);
4393 spin_unlock_irq(&data->txlock);
4394 } else {
4395 spin_unlock_irq(&data->txlock);
4396 data->suspend_count--;
4397 return -EBUSY;
4398 }
4399
4400 cancel_work_sync(&data->work);
4401
4402 btusb_stop_traffic(data);
4403 usb_kill_anchored_urbs(&data->tx_anchor);
4404
4405 if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
4406 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4407 enable_irq_wake(data->oob_wake_irq);
4408 enable_irq(data->oob_wake_irq);
4409 }
4410
4411 /* For global suspend, Realtek devices lose the loaded fw
4412 * in them. But for autosuspend, firmware should remain.
4413 * Actually, it depends on whether the usb host sends
4414 * set feature (enable wakeup) or not.
4415 */
4416 if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags)) {
4417 if (PMSG_IS_AUTO(message) &&
4418 device_can_wakeup(&data->udev->dev))
4419 data->udev->do_remote_wakeup = 1;
4420 else if (!PMSG_IS_AUTO(message))
4421 data->udev->reset_resume = 1;
4422 }
4423
4424 return 0;
4425 }
4426
play_deferred(struct btusb_data * data)4427 static void play_deferred(struct btusb_data *data)
4428 {
4429 struct urb *urb;
4430 int err;
4431
4432 while ((urb = usb_get_from_anchor(&data->deferred))) {
4433 usb_anchor_urb(urb, &data->tx_anchor);
4434
4435 err = usb_submit_urb(urb, GFP_ATOMIC);
4436 if (err < 0) {
4437 if (err != -EPERM && err != -ENODEV)
4438 BT_ERR("%s urb %p submission failed (%d)",
4439 data->hdev->name, urb, -err);
4440 kfree(urb->setup_packet);
4441 usb_unanchor_urb(urb);
4442 usb_free_urb(urb);
4443 break;
4444 }
4445
4446 data->tx_in_flight++;
4447 usb_free_urb(urb);
4448 }
4449
4450 /* Cleanup the rest deferred urbs. */
4451 while ((urb = usb_get_from_anchor(&data->deferred))) {
4452 kfree(urb->setup_packet);
4453 usb_free_urb(urb);
4454 }
4455 }
4456
btusb_resume(struct usb_interface * intf)4457 static int btusb_resume(struct usb_interface *intf)
4458 {
4459 struct btusb_data *data = usb_get_intfdata(intf);
4460 struct hci_dev *hdev = data->hdev;
4461 int err = 0;
4462
4463 BT_DBG("intf %p", intf);
4464
4465 if (--data->suspend_count)
4466 return 0;
4467
4468 /* Disable only if not already disabled (keep it balanced) */
4469 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4470 disable_irq(data->oob_wake_irq);
4471 disable_irq_wake(data->oob_wake_irq);
4472 }
4473
4474 if (!test_bit(HCI_RUNNING, &hdev->flags))
4475 goto done;
4476
4477 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4478 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4479 if (err < 0) {
4480 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
4481 goto failed;
4482 }
4483 }
4484
4485 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
4486 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
4487 if (err < 0) {
4488 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
4489 goto failed;
4490 }
4491
4492 btusb_submit_bulk_urb(hdev, GFP_NOIO);
4493 }
4494
4495 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
4496 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
4497 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
4498 else
4499 btusb_submit_isoc_urb(hdev, GFP_NOIO);
4500 }
4501
4502 spin_lock_irq(&data->txlock);
4503 play_deferred(data);
4504 clear_bit(BTUSB_SUSPENDING, &data->flags);
4505 spin_unlock_irq(&data->txlock);
4506 schedule_work(&data->work);
4507
4508 return 0;
4509
4510 failed:
4511 usb_scuttle_anchored_urbs(&data->deferred);
4512 done:
4513 spin_lock_irq(&data->txlock);
4514 clear_bit(BTUSB_SUSPENDING, &data->flags);
4515 spin_unlock_irq(&data->txlock);
4516
4517 return err;
4518 }
4519 #endif
4520
4521 static struct usb_driver btusb_driver = {
4522 .name = "btusb",
4523 .probe = btusb_probe,
4524 .disconnect = btusb_disconnect,
4525 #ifdef CONFIG_PM
4526 .suspend = btusb_suspend,
4527 .resume = btusb_resume,
4528 #endif
4529 .id_table = btusb_table,
4530 .supports_autosuspend = 1,
4531 .disable_hub_initiated_lpm = 1,
4532 };
4533
4534 module_usb_driver(btusb_driver);
4535
4536 module_param(disable_scofix, bool, 0644);
4537 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
4538
4539 module_param(force_scofix, bool, 0644);
4540 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
4541
4542 module_param(enable_autosuspend, bool, 0644);
4543 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
4544
4545 module_param(reset, bool, 0644);
4546 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
4547
4548 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
4549 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
4550 MODULE_VERSION(VERSION);
4551 MODULE_LICENSE("GPL");
4552