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Bluetooth: btusb: Fix the autosuspend enable and disable
[thirdparty/kernel/linux.git] / drivers / bluetooth / btusb.c
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 #define BTUSB_INTEL_NEWGEN 0x2000000
64
65 static const struct usb_device_id btusb_table[] = {
66 /* Generic Bluetooth USB device */
67 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
68
69 /* Generic Bluetooth AMP device */
70 { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
71
72 /* Generic Bluetooth USB interface */
73 { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
74
75 /* Apple-specific (Broadcom) devices */
76 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
77 .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
78
79 /* MediaTek MT76x0E */
80 { USB_DEVICE(0x0e8d, 0x763f) },
81
82 /* Broadcom SoftSailing reporting vendor specific */
83 { USB_DEVICE(0x0a5c, 0x21e1) },
84
85 /* Apple MacBookPro 7,1 */
86 { USB_DEVICE(0x05ac, 0x8213) },
87
88 /* Apple iMac11,1 */
89 { USB_DEVICE(0x05ac, 0x8215) },
90
91 /* Apple MacBookPro6,2 */
92 { USB_DEVICE(0x05ac, 0x8218) },
93
94 /* Apple MacBookAir3,1, MacBookAir3,2 */
95 { USB_DEVICE(0x05ac, 0x821b) },
96
97 /* Apple MacBookAir4,1 */
98 { USB_DEVICE(0x05ac, 0x821f) },
99
100 /* Apple MacBookPro8,2 */
101 { USB_DEVICE(0x05ac, 0x821a) },
102
103 /* Apple MacMini5,1 */
104 { USB_DEVICE(0x05ac, 0x8281) },
105
106 /* AVM BlueFRITZ! USB v2.0 */
107 { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
108
109 /* Bluetooth Ultraport Module from IBM */
110 { USB_DEVICE(0x04bf, 0x030a) },
111
112 /* ALPS Modules with non-standard id */
113 { USB_DEVICE(0x044e, 0x3001) },
114 { USB_DEVICE(0x044e, 0x3002) },
115
116 /* Ericsson with non-standard id */
117 { USB_DEVICE(0x0bdb, 0x1002) },
118
119 /* Canyon CN-BTU1 with HID interfaces */
120 { USB_DEVICE(0x0c10, 0x0000) },
121
122 /* Broadcom BCM20702A0 */
123 { USB_DEVICE(0x413c, 0x8197) },
124
125 /* Broadcom BCM20702B0 (Dynex/Insignia) */
126 { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
127
128 /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
129 { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01),
130 .driver_info = BTUSB_BCM_PATCHRAM },
131
132 /* Broadcom BCM920703 (HTC Vive) */
133 { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
134 .driver_info = BTUSB_BCM_PATCHRAM },
135
136 /* Foxconn - Hon Hai */
137 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
138 .driver_info = BTUSB_BCM_PATCHRAM },
139
140 /* Lite-On Technology - Broadcom based */
141 { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
142 .driver_info = BTUSB_BCM_PATCHRAM },
143
144 /* Broadcom devices with vendor specific id */
145 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
146 .driver_info = BTUSB_BCM_PATCHRAM },
147
148 /* ASUSTek Computer - Broadcom based */
149 { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
150 .driver_info = BTUSB_BCM_PATCHRAM },
151
152 /* Belkin F8065bf - Broadcom based */
153 { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
154 .driver_info = BTUSB_BCM_PATCHRAM },
155
156 /* IMC Networks - Broadcom based */
157 { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
158 .driver_info = BTUSB_BCM_PATCHRAM },
159
160 /* Dell Computer - Broadcom based */
161 { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
162 .driver_info = BTUSB_BCM_PATCHRAM },
163
164 /* Toshiba Corp - Broadcom based */
165 { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
166 .driver_info = BTUSB_BCM_PATCHRAM },
167
168 /* Intel Bluetooth USB Bootloader (RAM module) */
169 { USB_DEVICE(0x8087, 0x0a5a),
170 .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
171
172 { } /* Terminating entry */
173 };
174
175 MODULE_DEVICE_TABLE(usb, btusb_table);
176
177 static const struct usb_device_id blacklist_table[] = {
178 /* CSR BlueCore devices */
179 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
180
181 /* Broadcom BCM2033 without firmware */
182 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
183
184 /* Broadcom BCM2045 devices */
185 { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
186
187 /* Atheros 3011 with sflash firmware */
188 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
189 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
190 { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
191 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
192 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
193 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
194 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
195
196 /* Atheros AR9285 Malbec with sflash firmware */
197 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
198
199 /* Atheros 3012 with sflash firmware */
200 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
201 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
202 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
203 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
204 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
205 { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
206 { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
207 { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
208 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
209 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
210 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
211 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
212 { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
213 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
214 { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
215 { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
216 { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
217 { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
218 { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
219 { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
220 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
221 { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
222 { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
223 { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
224 { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
225 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
226 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
227 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
228 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
229 { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
230 { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
231 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
232 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
233 { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
234 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
235 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
236 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
237 { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
238 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
239 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
240 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
241 { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
242 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
243 { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
244 { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
245 { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
246 { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
247 { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
248 { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
249 { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
250
251 /* Atheros AR5BBU12 with sflash firmware */
252 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
253
254 /* Atheros AR5BBU12 with sflash firmware */
255 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
256 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
257
258 /* QCA ROME chipset */
259 { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME |
260 BTUSB_WIDEBAND_SPEECH },
261 { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME |
262 BTUSB_WIDEBAND_SPEECH },
263 { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME |
264 BTUSB_WIDEBAND_SPEECH },
265 { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME |
266 BTUSB_WIDEBAND_SPEECH },
267 { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME |
268 BTUSB_WIDEBAND_SPEECH },
269 { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME |
270 BTUSB_WIDEBAND_SPEECH },
271 { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME |
272 BTUSB_WIDEBAND_SPEECH },
273 { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME |
274 BTUSB_WIDEBAND_SPEECH },
275 { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME |
276 BTUSB_WIDEBAND_SPEECH },
277 { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME |
278 BTUSB_WIDEBAND_SPEECH },
279 { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME |
280 BTUSB_WIDEBAND_SPEECH },
281 { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME |
282 BTUSB_WIDEBAND_SPEECH },
283 { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME |
284 BTUSB_WIDEBAND_SPEECH },
285 { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME |
286 BTUSB_WIDEBAND_SPEECH },
287 { USB_DEVICE(0x04ca, 0x3021), .driver_info = BTUSB_QCA_ROME |
288 BTUSB_WIDEBAND_SPEECH },
289 { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME |
290 BTUSB_WIDEBAND_SPEECH },
291 { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME |
292 BTUSB_WIDEBAND_SPEECH },
293 { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME |
294 BTUSB_WIDEBAND_SPEECH },
295
296 /* QCA WCN6855 chipset */
297 { USB_DEVICE(0x0cf3, 0xe600), .driver_info = BTUSB_QCA_WCN6855 |
298 BTUSB_WIDEBAND_SPEECH },
299
300 /* Broadcom BCM2035 */
301 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
302 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
303 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
304
305 /* Broadcom BCM2045 */
306 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
307 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
308
309 /* IBM/Lenovo ThinkPad with Broadcom chip */
310 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
311 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
312
313 /* HP laptop with Broadcom chip */
314 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
315
316 /* Dell laptop with Broadcom chip */
317 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
318
319 /* Dell Wireless 370 and 410 devices */
320 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
321 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
322
323 /* Belkin F8T012 and F8T013 devices */
324 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
325 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
326
327 /* Asus WL-BTD202 device */
328 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
329
330 /* Kensington Bluetooth USB adapter */
331 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
332
333 /* RTX Telecom based adapters with buggy SCO support */
334 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
335 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
336
337 /* CONWISE Technology based adapters with buggy SCO support */
338 { USB_DEVICE(0x0e5e, 0x6622),
339 .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
340
341 /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
342 { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
343
344 /* Digianswer devices */
345 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
346 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
347
348 /* CSR BlueCore Bluetooth Sniffer */
349 { USB_DEVICE(0x0a12, 0x0002),
350 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
351
352 /* Frontline ComProbe Bluetooth Sniffer */
353 { USB_DEVICE(0x16d3, 0x0002),
354 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
355
356 /* Marvell Bluetooth devices */
357 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
358 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
359 { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
360
361 /* Intel Bluetooth devices */
362 { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW |
363 BTUSB_WIDEBAND_SPEECH |
364 BTUSB_VALID_LE_STATES },
365 { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_NEW |
366 BTUSB_WIDEBAND_SPEECH },
367 { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_NEW |
368 BTUSB_WIDEBAND_SPEECH },
369 { USB_DEVICE(0x8087, 0x0032), .driver_info = BTUSB_INTEL_NEWGEN |
370 BTUSB_WIDEBAND_SPEECH},
371 { USB_DEVICE(0x8087, 0x0033), .driver_info = BTUSB_INTEL_NEWGEN |
372 BTUSB_WIDEBAND_SPEECH},
373 { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
374 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
375 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
376 { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW |
377 BTUSB_WIDEBAND_SPEECH },
378 { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL |
379 BTUSB_WIDEBAND_SPEECH },
380 { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW |
381 BTUSB_WIDEBAND_SPEECH |
382 BTUSB_VALID_LE_STATES },
383
384 /* Other Intel Bluetooth devices */
385 { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
386 .driver_info = BTUSB_IGNORE },
387
388 /* Realtek 8822CE Bluetooth devices */
389 { USB_DEVICE(0x0bda, 0xb00c), .driver_info = BTUSB_REALTEK |
390 BTUSB_WIDEBAND_SPEECH },
391
392 /* Realtek 8852AE Bluetooth devices */
393 { USB_DEVICE(0x0bda, 0xc852), .driver_info = BTUSB_REALTEK |
394 BTUSB_WIDEBAND_SPEECH },
395
396 /* Realtek Bluetooth devices */
397 { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
398 .driver_info = BTUSB_REALTEK },
399
400 /* MediaTek Bluetooth devices */
401 { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01),
402 .driver_info = BTUSB_MEDIATEK },
403
404 /* Additional MediaTek MT7615E Bluetooth devices */
405 { USB_DEVICE(0x13d3, 0x3560), .driver_info = BTUSB_MEDIATEK},
406
407 /* Additional Realtek 8723AE Bluetooth devices */
408 { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
409 { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
410
411 /* Additional Realtek 8723BE Bluetooth devices */
412 { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
413 { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
414 { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
415 { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
416 { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
417 { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
418
419 /* Additional Realtek 8723BU Bluetooth devices */
420 { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
421
422 /* Additional Realtek 8723DE Bluetooth devices */
423 { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
424 { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
425
426 /* Additional Realtek 8821AE Bluetooth devices */
427 { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
428 { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
429 { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
430 { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
431 { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
432
433 /* Additional Realtek 8822BE Bluetooth devices */
434 { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
435 { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
436
437 /* Additional Realtek 8822CE Bluetooth devices */
438 { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK |
439 BTUSB_WIDEBAND_SPEECH },
440 { USB_DEVICE(0x04c5, 0x161f), .driver_info = BTUSB_REALTEK |
441 BTUSB_WIDEBAND_SPEECH },
442 { USB_DEVICE(0x0b05, 0x18ef), .driver_info = BTUSB_REALTEK |
443 BTUSB_WIDEBAND_SPEECH },
444 { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK |
445 BTUSB_WIDEBAND_SPEECH },
446 { USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK |
447 BTUSB_WIDEBAND_SPEECH },
448 { USB_DEVICE(0x13d3, 0x3553), .driver_info = BTUSB_REALTEK |
449 BTUSB_WIDEBAND_SPEECH },
450 { USB_DEVICE(0x13d3, 0x3555), .driver_info = BTUSB_REALTEK |
451 BTUSB_WIDEBAND_SPEECH },
452 { USB_DEVICE(0x2ff8, 0x3051), .driver_info = BTUSB_REALTEK |
453 BTUSB_WIDEBAND_SPEECH },
454 { USB_DEVICE(0x1358, 0xc123), .driver_info = BTUSB_REALTEK |
455 BTUSB_WIDEBAND_SPEECH },
456 { USB_DEVICE(0x0bda, 0xc123), .driver_info = BTUSB_REALTEK |
457 BTUSB_WIDEBAND_SPEECH },
458
459 /* Silicon Wave based devices */
460 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
461
462 { } /* Terminating entry */
463 };
464
465 /* The Bluetooth USB module build into some devices needs to be reset on resume,
466 * this is a problem with the platform (likely shutting off all power) not with
467 * the module itself. So we use a DMI list to match known broken platforms.
468 */
469 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
470 {
471 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
472 .matches = {
473 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
474 DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
475 },
476 },
477 {
478 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
479 .matches = {
480 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
481 DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
482 },
483 },
484 {
485 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
486 .matches = {
487 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
488 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
489 },
490 },
491 {}
492 };
493
494 #define BTUSB_MAX_ISOC_FRAMES 10
495
496 #define BTUSB_INTR_RUNNING 0
497 #define BTUSB_BULK_RUNNING 1
498 #define BTUSB_ISOC_RUNNING 2
499 #define BTUSB_SUSPENDING 3
500 #define BTUSB_DID_ISO_RESUME 4
501 #define BTUSB_BOOTLOADER 5
502 #define BTUSB_DOWNLOADING 6
503 #define BTUSB_FIRMWARE_LOADED 7
504 #define BTUSB_FIRMWARE_FAILED 8
505 #define BTUSB_BOOTING 9
506 #define BTUSB_DIAG_RUNNING 10
507 #define BTUSB_OOB_WAKE_ENABLED 11
508 #define BTUSB_HW_RESET_ACTIVE 12
509 #define BTUSB_TX_WAIT_VND_EVT 13
510 #define BTUSB_WAKEUP_DISABLE 14
511
512 struct btusb_data {
513 struct hci_dev *hdev;
514 struct usb_device *udev;
515 struct usb_interface *intf;
516 struct usb_interface *isoc;
517 struct usb_interface *diag;
518 unsigned isoc_ifnum;
519
520 unsigned long flags;
521
522 struct work_struct work;
523 struct work_struct waker;
524
525 struct usb_anchor deferred;
526 struct usb_anchor tx_anchor;
527 int tx_in_flight;
528 spinlock_t txlock;
529
530 struct usb_anchor intr_anchor;
531 struct usb_anchor bulk_anchor;
532 struct usb_anchor isoc_anchor;
533 struct usb_anchor diag_anchor;
534 struct usb_anchor ctrl_anchor;
535 spinlock_t rxlock;
536
537 struct sk_buff *evt_skb;
538 struct sk_buff *acl_skb;
539 struct sk_buff *sco_skb;
540
541 struct usb_endpoint_descriptor *intr_ep;
542 struct usb_endpoint_descriptor *bulk_tx_ep;
543 struct usb_endpoint_descriptor *bulk_rx_ep;
544 struct usb_endpoint_descriptor *isoc_tx_ep;
545 struct usb_endpoint_descriptor *isoc_rx_ep;
546 struct usb_endpoint_descriptor *diag_tx_ep;
547 struct usb_endpoint_descriptor *diag_rx_ep;
548
549 struct gpio_desc *reset_gpio;
550
551 __u8 cmdreq_type;
552 __u8 cmdreq;
553
554 unsigned int sco_num;
555 unsigned int air_mode;
556 bool usb_alt6_packet_flow;
557 int isoc_altsetting;
558 int suspend_count;
559
560 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
561 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
562
563 int (*setup_on_usb)(struct hci_dev *hdev);
564
565 int oob_wake_irq; /* irq for out-of-band wake-on-bt */
566 unsigned cmd_timeout_cnt;
567 };
568
569 static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
570 {
571 struct btusb_data *data = hci_get_drvdata(hdev);
572 struct gpio_desc *reset_gpio = data->reset_gpio;
573
574 if (++data->cmd_timeout_cnt < 5)
575 return;
576
577 if (!reset_gpio) {
578 bt_dev_err(hdev, "No way to reset. Ignoring and continuing");
579 return;
580 }
581
582 /*
583 * Toggle the hard reset line if the platform provides one. The reset
584 * is going to yank the device off the USB and then replug. So doing
585 * once is enough. The cleanup is handled correctly on the way out
586 * (standard USB disconnect), and the new device is detected cleanly
587 * and bound to the driver again like it should be.
588 */
589 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
590 bt_dev_err(hdev, "last reset failed? Not resetting again");
591 return;
592 }
593
594 bt_dev_err(hdev, "Initiating HW reset via gpio");
595 gpiod_set_value_cansleep(reset_gpio, 1);
596 msleep(100);
597 gpiod_set_value_cansleep(reset_gpio, 0);
598 }
599
600 static void btusb_rtl_cmd_timeout(struct hci_dev *hdev)
601 {
602 struct btusb_data *data = hci_get_drvdata(hdev);
603 struct gpio_desc *reset_gpio = data->reset_gpio;
604
605 if (++data->cmd_timeout_cnt < 5)
606 return;
607
608 if (!reset_gpio) {
609 bt_dev_err(hdev, "No gpio to reset Realtek device, ignoring");
610 return;
611 }
612
613 /* Toggle the hard reset line. The Realtek device is going to
614 * yank itself off the USB and then replug. The cleanup is handled
615 * correctly on the way out (standard USB disconnect), and the new
616 * device is detected cleanly and bound to the driver again like
617 * it should be.
618 */
619 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
620 bt_dev_err(hdev, "last reset failed? Not resetting again");
621 return;
622 }
623
624 bt_dev_err(hdev, "Reset Realtek device via gpio");
625 gpiod_set_value_cansleep(reset_gpio, 1);
626 msleep(200);
627 gpiod_set_value_cansleep(reset_gpio, 0);
628 }
629
630 static void btusb_qca_cmd_timeout(struct hci_dev *hdev)
631 {
632 struct btusb_data *data = hci_get_drvdata(hdev);
633 int err;
634
635 if (++data->cmd_timeout_cnt < 5)
636 return;
637
638 bt_dev_err(hdev, "Multiple cmd timeouts seen. Resetting usb device.");
639 /* This is not an unbalanced PM reference since the device will reset */
640 err = usb_autopm_get_interface(data->intf);
641 if (!err)
642 usb_queue_reset_device(data->intf);
643 else
644 bt_dev_err(hdev, "Failed usb_autopm_get_interface with %d", err);
645 }
646
647 static inline void btusb_free_frags(struct btusb_data *data)
648 {
649 unsigned long flags;
650
651 spin_lock_irqsave(&data->rxlock, flags);
652
653 kfree_skb(data->evt_skb);
654 data->evt_skb = NULL;
655
656 kfree_skb(data->acl_skb);
657 data->acl_skb = NULL;
658
659 kfree_skb(data->sco_skb);
660 data->sco_skb = NULL;
661
662 spin_unlock_irqrestore(&data->rxlock, flags);
663 }
664
665 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
666 {
667 struct sk_buff *skb;
668 unsigned long flags;
669 int err = 0;
670
671 spin_lock_irqsave(&data->rxlock, flags);
672 skb = data->evt_skb;
673
674 while (count) {
675 int len;
676
677 if (!skb) {
678 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
679 if (!skb) {
680 err = -ENOMEM;
681 break;
682 }
683
684 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
685 hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
686 }
687
688 len = min_t(uint, hci_skb_expect(skb), count);
689 skb_put_data(skb, buffer, len);
690
691 count -= len;
692 buffer += len;
693 hci_skb_expect(skb) -= len;
694
695 if (skb->len == HCI_EVENT_HDR_SIZE) {
696 /* Complete event header */
697 hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
698
699 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
700 kfree_skb(skb);
701 skb = NULL;
702
703 err = -EILSEQ;
704 break;
705 }
706 }
707
708 if (!hci_skb_expect(skb)) {
709 /* Complete frame */
710 data->recv_event(data->hdev, skb);
711 skb = NULL;
712 }
713 }
714
715 data->evt_skb = skb;
716 spin_unlock_irqrestore(&data->rxlock, flags);
717
718 return err;
719 }
720
721 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
722 {
723 struct sk_buff *skb;
724 unsigned long flags;
725 int err = 0;
726
727 spin_lock_irqsave(&data->rxlock, flags);
728 skb = data->acl_skb;
729
730 while (count) {
731 int len;
732
733 if (!skb) {
734 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
735 if (!skb) {
736 err = -ENOMEM;
737 break;
738 }
739
740 hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
741 hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
742 }
743
744 len = min_t(uint, hci_skb_expect(skb), count);
745 skb_put_data(skb, buffer, len);
746
747 count -= len;
748 buffer += len;
749 hci_skb_expect(skb) -= len;
750
751 if (skb->len == HCI_ACL_HDR_SIZE) {
752 __le16 dlen = hci_acl_hdr(skb)->dlen;
753
754 /* Complete ACL header */
755 hci_skb_expect(skb) = __le16_to_cpu(dlen);
756
757 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
758 kfree_skb(skb);
759 skb = NULL;
760
761 err = -EILSEQ;
762 break;
763 }
764 }
765
766 if (!hci_skb_expect(skb)) {
767 /* Complete frame */
768 hci_recv_frame(data->hdev, skb);
769 skb = NULL;
770 }
771 }
772
773 data->acl_skb = skb;
774 spin_unlock_irqrestore(&data->rxlock, flags);
775
776 return err;
777 }
778
779 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
780 {
781 struct sk_buff *skb;
782 unsigned long flags;
783 int err = 0;
784
785 spin_lock_irqsave(&data->rxlock, flags);
786 skb = data->sco_skb;
787
788 while (count) {
789 int len;
790
791 if (!skb) {
792 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
793 if (!skb) {
794 err = -ENOMEM;
795 break;
796 }
797
798 hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
799 hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
800 }
801
802 len = min_t(uint, hci_skb_expect(skb), count);
803 skb_put_data(skb, buffer, len);
804
805 count -= len;
806 buffer += len;
807 hci_skb_expect(skb) -= len;
808
809 if (skb->len == HCI_SCO_HDR_SIZE) {
810 /* Complete SCO header */
811 hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
812
813 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
814 kfree_skb(skb);
815 skb = NULL;
816
817 err = -EILSEQ;
818 break;
819 }
820 }
821
822 if (!hci_skb_expect(skb)) {
823 /* Complete frame */
824 hci_recv_frame(data->hdev, skb);
825 skb = NULL;
826 }
827 }
828
829 data->sco_skb = skb;
830 spin_unlock_irqrestore(&data->rxlock, flags);
831
832 return err;
833 }
834
835 static void btusb_intr_complete(struct urb *urb)
836 {
837 struct hci_dev *hdev = urb->context;
838 struct btusb_data *data = hci_get_drvdata(hdev);
839 int err;
840
841 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
842 urb->actual_length);
843
844 if (!test_bit(HCI_RUNNING, &hdev->flags))
845 return;
846
847 if (urb->status == 0) {
848 hdev->stat.byte_rx += urb->actual_length;
849
850 if (btusb_recv_intr(data, urb->transfer_buffer,
851 urb->actual_length) < 0) {
852 bt_dev_err(hdev, "corrupted event packet");
853 hdev->stat.err_rx++;
854 }
855 } else if (urb->status == -ENOENT) {
856 /* Avoid suspend failed when usb_kill_urb */
857 return;
858 }
859
860 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
861 return;
862
863 usb_mark_last_busy(data->udev);
864 usb_anchor_urb(urb, &data->intr_anchor);
865
866 err = usb_submit_urb(urb, GFP_ATOMIC);
867 if (err < 0) {
868 /* -EPERM: urb is being killed;
869 * -ENODEV: device got disconnected
870 */
871 if (err != -EPERM && err != -ENODEV)
872 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
873 urb, -err);
874 usb_unanchor_urb(urb);
875 }
876 }
877
878 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
879 {
880 struct btusb_data *data = hci_get_drvdata(hdev);
881 struct urb *urb;
882 unsigned char *buf;
883 unsigned int pipe;
884 int err, size;
885
886 BT_DBG("%s", hdev->name);
887
888 if (!data->intr_ep)
889 return -ENODEV;
890
891 urb = usb_alloc_urb(0, mem_flags);
892 if (!urb)
893 return -ENOMEM;
894
895 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
896
897 buf = kmalloc(size, mem_flags);
898 if (!buf) {
899 usb_free_urb(urb);
900 return -ENOMEM;
901 }
902
903 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
904
905 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
906 btusb_intr_complete, hdev, data->intr_ep->bInterval);
907
908 urb->transfer_flags |= URB_FREE_BUFFER;
909
910 usb_anchor_urb(urb, &data->intr_anchor);
911
912 err = usb_submit_urb(urb, mem_flags);
913 if (err < 0) {
914 if (err != -EPERM && err != -ENODEV)
915 bt_dev_err(hdev, "urb %p submission failed (%d)",
916 urb, -err);
917 usb_unanchor_urb(urb);
918 }
919
920 usb_free_urb(urb);
921
922 return err;
923 }
924
925 static void btusb_bulk_complete(struct urb *urb)
926 {
927 struct hci_dev *hdev = urb->context;
928 struct btusb_data *data = hci_get_drvdata(hdev);
929 int err;
930
931 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
932 urb->actual_length);
933
934 if (!test_bit(HCI_RUNNING, &hdev->flags))
935 return;
936
937 if (urb->status == 0) {
938 hdev->stat.byte_rx += urb->actual_length;
939
940 if (data->recv_bulk(data, urb->transfer_buffer,
941 urb->actual_length) < 0) {
942 bt_dev_err(hdev, "corrupted ACL packet");
943 hdev->stat.err_rx++;
944 }
945 } else if (urb->status == -ENOENT) {
946 /* Avoid suspend failed when usb_kill_urb */
947 return;
948 }
949
950 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
951 return;
952
953 usb_anchor_urb(urb, &data->bulk_anchor);
954 usb_mark_last_busy(data->udev);
955
956 err = usb_submit_urb(urb, GFP_ATOMIC);
957 if (err < 0) {
958 /* -EPERM: urb is being killed;
959 * -ENODEV: device got disconnected
960 */
961 if (err != -EPERM && err != -ENODEV)
962 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
963 urb, -err);
964 usb_unanchor_urb(urb);
965 }
966 }
967
968 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
969 {
970 struct btusb_data *data = hci_get_drvdata(hdev);
971 struct urb *urb;
972 unsigned char *buf;
973 unsigned int pipe;
974 int err, size = HCI_MAX_FRAME_SIZE;
975
976 BT_DBG("%s", hdev->name);
977
978 if (!data->bulk_rx_ep)
979 return -ENODEV;
980
981 urb = usb_alloc_urb(0, mem_flags);
982 if (!urb)
983 return -ENOMEM;
984
985 buf = kmalloc(size, mem_flags);
986 if (!buf) {
987 usb_free_urb(urb);
988 return -ENOMEM;
989 }
990
991 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
992
993 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
994 btusb_bulk_complete, hdev);
995
996 urb->transfer_flags |= URB_FREE_BUFFER;
997
998 usb_mark_last_busy(data->udev);
999 usb_anchor_urb(urb, &data->bulk_anchor);
1000
1001 err = usb_submit_urb(urb, mem_flags);
1002 if (err < 0) {
1003 if (err != -EPERM && err != -ENODEV)
1004 bt_dev_err(hdev, "urb %p submission failed (%d)",
1005 urb, -err);
1006 usb_unanchor_urb(urb);
1007 }
1008
1009 usb_free_urb(urb);
1010
1011 return err;
1012 }
1013
1014 static void btusb_isoc_complete(struct urb *urb)
1015 {
1016 struct hci_dev *hdev = urb->context;
1017 struct btusb_data *data = hci_get_drvdata(hdev);
1018 int i, err;
1019
1020 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1021 urb->actual_length);
1022
1023 if (!test_bit(HCI_RUNNING, &hdev->flags))
1024 return;
1025
1026 if (urb->status == 0) {
1027 for (i = 0; i < urb->number_of_packets; i++) {
1028 unsigned int offset = urb->iso_frame_desc[i].offset;
1029 unsigned int length = urb->iso_frame_desc[i].actual_length;
1030
1031 if (urb->iso_frame_desc[i].status)
1032 continue;
1033
1034 hdev->stat.byte_rx += length;
1035
1036 if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
1037 length) < 0) {
1038 bt_dev_err(hdev, "corrupted SCO packet");
1039 hdev->stat.err_rx++;
1040 }
1041 }
1042 } else if (urb->status == -ENOENT) {
1043 /* Avoid suspend failed when usb_kill_urb */
1044 return;
1045 }
1046
1047 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
1048 return;
1049
1050 usb_anchor_urb(urb, &data->isoc_anchor);
1051
1052 err = usb_submit_urb(urb, GFP_ATOMIC);
1053 if (err < 0) {
1054 /* -EPERM: urb is being killed;
1055 * -ENODEV: device got disconnected
1056 */
1057 if (err != -EPERM && err != -ENODEV)
1058 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1059 urb, -err);
1060 usb_unanchor_urb(urb);
1061 }
1062 }
1063
1064 static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len,
1065 int mtu, struct btusb_data *data)
1066 {
1067 int i, offset = 0;
1068 unsigned int interval;
1069
1070 BT_DBG("len %d mtu %d", len, mtu);
1071
1072 /* For mSBC ALT 6 setting the host will send the packet at continuous
1073 * flow. As per core spec 5, vol 4, part B, table 2.1. For ALT setting
1074 * 6 the HCI PACKET INTERVAL should be 7.5ms for every usb packets.
1075 * To maintain the rate we send 63bytes of usb packets alternatively for
1076 * 7ms and 8ms to maintain the rate as 7.5ms.
1077 */
1078 if (data->usb_alt6_packet_flow) {
1079 interval = 7;
1080 data->usb_alt6_packet_flow = false;
1081 } else {
1082 interval = 6;
1083 data->usb_alt6_packet_flow = true;
1084 }
1085
1086 for (i = 0; i < interval; i++) {
1087 urb->iso_frame_desc[i].offset = offset;
1088 urb->iso_frame_desc[i].length = offset;
1089 }
1090
1091 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1092 urb->iso_frame_desc[i].offset = offset;
1093 urb->iso_frame_desc[i].length = len;
1094 i++;
1095 }
1096
1097 urb->number_of_packets = i;
1098 }
1099
1100 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
1101 {
1102 int i, offset = 0;
1103
1104 BT_DBG("len %d mtu %d", len, mtu);
1105
1106 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
1107 i++, offset += mtu, len -= mtu) {
1108 urb->iso_frame_desc[i].offset = offset;
1109 urb->iso_frame_desc[i].length = mtu;
1110 }
1111
1112 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1113 urb->iso_frame_desc[i].offset = offset;
1114 urb->iso_frame_desc[i].length = len;
1115 i++;
1116 }
1117
1118 urb->number_of_packets = i;
1119 }
1120
1121 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
1122 {
1123 struct btusb_data *data = hci_get_drvdata(hdev);
1124 struct urb *urb;
1125 unsigned char *buf;
1126 unsigned int pipe;
1127 int err, size;
1128
1129 BT_DBG("%s", hdev->name);
1130
1131 if (!data->isoc_rx_ep)
1132 return -ENODEV;
1133
1134 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
1135 if (!urb)
1136 return -ENOMEM;
1137
1138 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
1139 BTUSB_MAX_ISOC_FRAMES;
1140
1141 buf = kmalloc(size, mem_flags);
1142 if (!buf) {
1143 usb_free_urb(urb);
1144 return -ENOMEM;
1145 }
1146
1147 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
1148
1149 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
1150 hdev, data->isoc_rx_ep->bInterval);
1151
1152 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
1153
1154 __fill_isoc_descriptor(urb, size,
1155 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
1156
1157 usb_anchor_urb(urb, &data->isoc_anchor);
1158
1159 err = usb_submit_urb(urb, mem_flags);
1160 if (err < 0) {
1161 if (err != -EPERM && err != -ENODEV)
1162 bt_dev_err(hdev, "urb %p submission failed (%d)",
1163 urb, -err);
1164 usb_unanchor_urb(urb);
1165 }
1166
1167 usb_free_urb(urb);
1168
1169 return err;
1170 }
1171
1172 static void btusb_diag_complete(struct urb *urb)
1173 {
1174 struct hci_dev *hdev = urb->context;
1175 struct btusb_data *data = hci_get_drvdata(hdev);
1176 int err;
1177
1178 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1179 urb->actual_length);
1180
1181 if (urb->status == 0) {
1182 struct sk_buff *skb;
1183
1184 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1185 if (skb) {
1186 skb_put_data(skb, urb->transfer_buffer,
1187 urb->actual_length);
1188 hci_recv_diag(hdev, skb);
1189 }
1190 } else if (urb->status == -ENOENT) {
1191 /* Avoid suspend failed when usb_kill_urb */
1192 return;
1193 }
1194
1195 if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1196 return;
1197
1198 usb_anchor_urb(urb, &data->diag_anchor);
1199 usb_mark_last_busy(data->udev);
1200
1201 err = usb_submit_urb(urb, GFP_ATOMIC);
1202 if (err < 0) {
1203 /* -EPERM: urb is being killed;
1204 * -ENODEV: device got disconnected
1205 */
1206 if (err != -EPERM && err != -ENODEV)
1207 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1208 urb, -err);
1209 usb_unanchor_urb(urb);
1210 }
1211 }
1212
1213 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1214 {
1215 struct btusb_data *data = hci_get_drvdata(hdev);
1216 struct urb *urb;
1217 unsigned char *buf;
1218 unsigned int pipe;
1219 int err, size = HCI_MAX_FRAME_SIZE;
1220
1221 BT_DBG("%s", hdev->name);
1222
1223 if (!data->diag_rx_ep)
1224 return -ENODEV;
1225
1226 urb = usb_alloc_urb(0, mem_flags);
1227 if (!urb)
1228 return -ENOMEM;
1229
1230 buf = kmalloc(size, mem_flags);
1231 if (!buf) {
1232 usb_free_urb(urb);
1233 return -ENOMEM;
1234 }
1235
1236 pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1237
1238 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1239 btusb_diag_complete, hdev);
1240
1241 urb->transfer_flags |= URB_FREE_BUFFER;
1242
1243 usb_mark_last_busy(data->udev);
1244 usb_anchor_urb(urb, &data->diag_anchor);
1245
1246 err = usb_submit_urb(urb, mem_flags);
1247 if (err < 0) {
1248 if (err != -EPERM && err != -ENODEV)
1249 bt_dev_err(hdev, "urb %p submission failed (%d)",
1250 urb, -err);
1251 usb_unanchor_urb(urb);
1252 }
1253
1254 usb_free_urb(urb);
1255
1256 return err;
1257 }
1258
1259 static void btusb_tx_complete(struct urb *urb)
1260 {
1261 struct sk_buff *skb = urb->context;
1262 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1263 struct btusb_data *data = hci_get_drvdata(hdev);
1264 unsigned long flags;
1265
1266 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1267 urb->actual_length);
1268
1269 if (!test_bit(HCI_RUNNING, &hdev->flags))
1270 goto done;
1271
1272 if (!urb->status)
1273 hdev->stat.byte_tx += urb->transfer_buffer_length;
1274 else
1275 hdev->stat.err_tx++;
1276
1277 done:
1278 spin_lock_irqsave(&data->txlock, flags);
1279 data->tx_in_flight--;
1280 spin_unlock_irqrestore(&data->txlock, flags);
1281
1282 kfree(urb->setup_packet);
1283
1284 kfree_skb(skb);
1285 }
1286
1287 static void btusb_isoc_tx_complete(struct urb *urb)
1288 {
1289 struct sk_buff *skb = urb->context;
1290 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1291
1292 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1293 urb->actual_length);
1294
1295 if (!test_bit(HCI_RUNNING, &hdev->flags))
1296 goto done;
1297
1298 if (!urb->status)
1299 hdev->stat.byte_tx += urb->transfer_buffer_length;
1300 else
1301 hdev->stat.err_tx++;
1302
1303 done:
1304 kfree(urb->setup_packet);
1305
1306 kfree_skb(skb);
1307 }
1308
1309 static int btusb_open(struct hci_dev *hdev)
1310 {
1311 struct btusb_data *data = hci_get_drvdata(hdev);
1312 int err;
1313
1314 BT_DBG("%s", hdev->name);
1315
1316 err = usb_autopm_get_interface(data->intf);
1317 if (err < 0)
1318 return err;
1319
1320 /* Patching USB firmware files prior to starting any URBs of HCI path
1321 * It is more safe to use USB bulk channel for downloading USB patch
1322 */
1323 if (data->setup_on_usb) {
1324 err = data->setup_on_usb(hdev);
1325 if (err < 0)
1326 goto setup_fail;
1327 }
1328
1329 data->intf->needs_remote_wakeup = 1;
1330
1331 /* Disable device remote wakeup when host is suspended
1332 * For Realtek chips, global suspend without
1333 * SET_FEATURE (DEVICE_REMOTE_WAKEUP) can save more power in device.
1334 */
1335 if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1336 device_wakeup_disable(&data->udev->dev);
1337
1338 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1339 goto done;
1340
1341 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1342 if (err < 0)
1343 goto failed;
1344
1345 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1346 if (err < 0) {
1347 usb_kill_anchored_urbs(&data->intr_anchor);
1348 goto failed;
1349 }
1350
1351 set_bit(BTUSB_BULK_RUNNING, &data->flags);
1352 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1353
1354 if (data->diag) {
1355 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1356 set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1357 }
1358
1359 done:
1360 usb_autopm_put_interface(data->intf);
1361 return 0;
1362
1363 failed:
1364 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1365 setup_fail:
1366 usb_autopm_put_interface(data->intf);
1367 return err;
1368 }
1369
1370 static void btusb_stop_traffic(struct btusb_data *data)
1371 {
1372 usb_kill_anchored_urbs(&data->intr_anchor);
1373 usb_kill_anchored_urbs(&data->bulk_anchor);
1374 usb_kill_anchored_urbs(&data->isoc_anchor);
1375 usb_kill_anchored_urbs(&data->diag_anchor);
1376 usb_kill_anchored_urbs(&data->ctrl_anchor);
1377 }
1378
1379 static int btusb_close(struct hci_dev *hdev)
1380 {
1381 struct btusb_data *data = hci_get_drvdata(hdev);
1382 int err;
1383
1384 BT_DBG("%s", hdev->name);
1385
1386 cancel_work_sync(&data->work);
1387 cancel_work_sync(&data->waker);
1388
1389 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1390 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1391 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1392 clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1393
1394 btusb_stop_traffic(data);
1395 btusb_free_frags(data);
1396
1397 err = usb_autopm_get_interface(data->intf);
1398 if (err < 0)
1399 goto failed;
1400
1401 data->intf->needs_remote_wakeup = 0;
1402
1403 /* Enable remote wake up for auto-suspend */
1404 if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1405 data->intf->needs_remote_wakeup = 1;
1406
1407 usb_autopm_put_interface(data->intf);
1408
1409 failed:
1410 usb_scuttle_anchored_urbs(&data->deferred);
1411 return 0;
1412 }
1413
1414 static int btusb_flush(struct hci_dev *hdev)
1415 {
1416 struct btusb_data *data = hci_get_drvdata(hdev);
1417
1418 BT_DBG("%s", hdev->name);
1419
1420 usb_kill_anchored_urbs(&data->tx_anchor);
1421 btusb_free_frags(data);
1422
1423 return 0;
1424 }
1425
1426 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1427 {
1428 struct btusb_data *data = hci_get_drvdata(hdev);
1429 struct usb_ctrlrequest *dr;
1430 struct urb *urb;
1431 unsigned int pipe;
1432
1433 urb = usb_alloc_urb(0, GFP_KERNEL);
1434 if (!urb)
1435 return ERR_PTR(-ENOMEM);
1436
1437 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1438 if (!dr) {
1439 usb_free_urb(urb);
1440 return ERR_PTR(-ENOMEM);
1441 }
1442
1443 dr->bRequestType = data->cmdreq_type;
1444 dr->bRequest = data->cmdreq;
1445 dr->wIndex = 0;
1446 dr->wValue = 0;
1447 dr->wLength = __cpu_to_le16(skb->len);
1448
1449 pipe = usb_sndctrlpipe(data->udev, 0x00);
1450
1451 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1452 skb->data, skb->len, btusb_tx_complete, skb);
1453
1454 skb->dev = (void *)hdev;
1455
1456 return urb;
1457 }
1458
1459 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1460 {
1461 struct btusb_data *data = hci_get_drvdata(hdev);
1462 struct urb *urb;
1463 unsigned int pipe;
1464
1465 if (!data->bulk_tx_ep)
1466 return ERR_PTR(-ENODEV);
1467
1468 urb = usb_alloc_urb(0, GFP_KERNEL);
1469 if (!urb)
1470 return ERR_PTR(-ENOMEM);
1471
1472 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1473
1474 usb_fill_bulk_urb(urb, data->udev, pipe,
1475 skb->data, skb->len, btusb_tx_complete, skb);
1476
1477 skb->dev = (void *)hdev;
1478
1479 return urb;
1480 }
1481
1482 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1483 {
1484 struct btusb_data *data = hci_get_drvdata(hdev);
1485 struct urb *urb;
1486 unsigned int pipe;
1487
1488 if (!data->isoc_tx_ep)
1489 return ERR_PTR(-ENODEV);
1490
1491 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1492 if (!urb)
1493 return ERR_PTR(-ENOMEM);
1494
1495 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1496
1497 usb_fill_int_urb(urb, data->udev, pipe,
1498 skb->data, skb->len, btusb_isoc_tx_complete,
1499 skb, data->isoc_tx_ep->bInterval);
1500
1501 urb->transfer_flags = URB_ISO_ASAP;
1502
1503 if (data->isoc_altsetting == 6)
1504 __fill_isoc_descriptor_msbc(urb, skb->len,
1505 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize),
1506 data);
1507 else
1508 __fill_isoc_descriptor(urb, skb->len,
1509 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1510 skb->dev = (void *)hdev;
1511
1512 return urb;
1513 }
1514
1515 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1516 {
1517 struct btusb_data *data = hci_get_drvdata(hdev);
1518 int err;
1519
1520 usb_anchor_urb(urb, &data->tx_anchor);
1521
1522 err = usb_submit_urb(urb, GFP_KERNEL);
1523 if (err < 0) {
1524 if (err != -EPERM && err != -ENODEV)
1525 bt_dev_err(hdev, "urb %p submission failed (%d)",
1526 urb, -err);
1527 kfree(urb->setup_packet);
1528 usb_unanchor_urb(urb);
1529 } else {
1530 usb_mark_last_busy(data->udev);
1531 }
1532
1533 usb_free_urb(urb);
1534 return err;
1535 }
1536
1537 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1538 {
1539 struct btusb_data *data = hci_get_drvdata(hdev);
1540 unsigned long flags;
1541 bool suspending;
1542
1543 spin_lock_irqsave(&data->txlock, flags);
1544 suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1545 if (!suspending)
1546 data->tx_in_flight++;
1547 spin_unlock_irqrestore(&data->txlock, flags);
1548
1549 if (!suspending)
1550 return submit_tx_urb(hdev, urb);
1551
1552 usb_anchor_urb(urb, &data->deferred);
1553 schedule_work(&data->waker);
1554
1555 usb_free_urb(urb);
1556 return 0;
1557 }
1558
1559 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1560 {
1561 struct urb *urb;
1562
1563 BT_DBG("%s", hdev->name);
1564
1565 switch (hci_skb_pkt_type(skb)) {
1566 case HCI_COMMAND_PKT:
1567 urb = alloc_ctrl_urb(hdev, skb);
1568 if (IS_ERR(urb))
1569 return PTR_ERR(urb);
1570
1571 hdev->stat.cmd_tx++;
1572 return submit_or_queue_tx_urb(hdev, urb);
1573
1574 case HCI_ACLDATA_PKT:
1575 urb = alloc_bulk_urb(hdev, skb);
1576 if (IS_ERR(urb))
1577 return PTR_ERR(urb);
1578
1579 hdev->stat.acl_tx++;
1580 return submit_or_queue_tx_urb(hdev, urb);
1581
1582 case HCI_SCODATA_PKT:
1583 if (hci_conn_num(hdev, SCO_LINK) < 1)
1584 return -ENODEV;
1585
1586 urb = alloc_isoc_urb(hdev, skb);
1587 if (IS_ERR(urb))
1588 return PTR_ERR(urb);
1589
1590 hdev->stat.sco_tx++;
1591 return submit_tx_urb(hdev, urb);
1592 }
1593
1594 return -EILSEQ;
1595 }
1596
1597 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1598 {
1599 struct btusb_data *data = hci_get_drvdata(hdev);
1600
1601 BT_DBG("%s evt %d", hdev->name, evt);
1602
1603 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1604 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1605 data->air_mode = evt;
1606 schedule_work(&data->work);
1607 }
1608 }
1609
1610 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1611 {
1612 struct btusb_data *data = hci_get_drvdata(hdev);
1613 struct usb_interface *intf = data->isoc;
1614 struct usb_endpoint_descriptor *ep_desc;
1615 int i, err;
1616
1617 if (!data->isoc)
1618 return -ENODEV;
1619
1620 err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1621 if (err < 0) {
1622 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1623 return err;
1624 }
1625
1626 data->isoc_altsetting = altsetting;
1627
1628 data->isoc_tx_ep = NULL;
1629 data->isoc_rx_ep = NULL;
1630
1631 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1632 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1633
1634 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1635 data->isoc_tx_ep = ep_desc;
1636 continue;
1637 }
1638
1639 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1640 data->isoc_rx_ep = ep_desc;
1641 continue;
1642 }
1643 }
1644
1645 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1646 bt_dev_err(hdev, "invalid SCO descriptors");
1647 return -ENODEV;
1648 }
1649
1650 return 0;
1651 }
1652
1653 static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts)
1654 {
1655 struct btusb_data *data = hci_get_drvdata(hdev);
1656 int err;
1657
1658 if (data->isoc_altsetting != new_alts) {
1659 unsigned long flags;
1660
1661 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1662 usb_kill_anchored_urbs(&data->isoc_anchor);
1663
1664 /* When isochronous alternate setting needs to be
1665 * changed, because SCO connection has been added
1666 * or removed, a packet fragment may be left in the
1667 * reassembling state. This could lead to wrongly
1668 * assembled fragments.
1669 *
1670 * Clear outstanding fragment when selecting a new
1671 * alternate setting.
1672 */
1673 spin_lock_irqsave(&data->rxlock, flags);
1674 kfree_skb(data->sco_skb);
1675 data->sco_skb = NULL;
1676 spin_unlock_irqrestore(&data->rxlock, flags);
1677
1678 err = __set_isoc_interface(hdev, new_alts);
1679 if (err < 0)
1680 return err;
1681 }
1682
1683 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1684 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1685 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1686 else
1687 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1688 }
1689
1690 return 0;
1691 }
1692
1693 static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data,
1694 int alt)
1695 {
1696 struct usb_interface *intf = data->isoc;
1697 int i;
1698
1699 BT_DBG("Looking for Alt no :%d", alt);
1700
1701 if (!intf)
1702 return NULL;
1703
1704 for (i = 0; i < intf->num_altsetting; i++) {
1705 if (intf->altsetting[i].desc.bAlternateSetting == alt)
1706 return &intf->altsetting[i];
1707 }
1708
1709 return NULL;
1710 }
1711
1712 static void btusb_work(struct work_struct *work)
1713 {
1714 struct btusb_data *data = container_of(work, struct btusb_data, work);
1715 struct hci_dev *hdev = data->hdev;
1716 int new_alts = 0;
1717 int err;
1718
1719 if (data->sco_num > 0) {
1720 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1721 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1722 if (err < 0) {
1723 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1724 usb_kill_anchored_urbs(&data->isoc_anchor);
1725 return;
1726 }
1727
1728 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1729 }
1730
1731 if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_CVSD) {
1732 if (hdev->voice_setting & 0x0020) {
1733 static const int alts[3] = { 2, 4, 5 };
1734
1735 new_alts = alts[data->sco_num - 1];
1736 } else {
1737 new_alts = data->sco_num;
1738 }
1739 } else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) {
1740 /* Bluetooth USB spec recommends alt 6 (63 bytes), but
1741 * many adapters do not support it. Alt 1 appears to
1742 * work for all adapters that do not have alt 6, and
1743 * which work with WBS at all.
1744 */
1745 new_alts = btusb_find_altsetting(data, 6) ? 6 : 1;
1746 }
1747
1748 if (btusb_switch_alt_setting(hdev, new_alts) < 0)
1749 bt_dev_err(hdev, "set USB alt:(%d) failed!", new_alts);
1750 } else {
1751 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1752 usb_kill_anchored_urbs(&data->isoc_anchor);
1753
1754 __set_isoc_interface(hdev, 0);
1755 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1756 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1757 }
1758 }
1759
1760 static void btusb_waker(struct work_struct *work)
1761 {
1762 struct btusb_data *data = container_of(work, struct btusb_data, waker);
1763 int err;
1764
1765 err = usb_autopm_get_interface(data->intf);
1766 if (err < 0)
1767 return;
1768
1769 usb_autopm_put_interface(data->intf);
1770 }
1771
1772 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1773 {
1774 struct sk_buff *skb;
1775 u8 val = 0x00;
1776
1777 BT_DBG("%s", hdev->name);
1778
1779 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1780 if (IS_ERR(skb))
1781 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
1782 else
1783 kfree_skb(skb);
1784
1785 return 0;
1786 }
1787
1788 static int btusb_setup_csr(struct hci_dev *hdev)
1789 {
1790 struct btusb_data *data = hci_get_drvdata(hdev);
1791 u16 bcdDevice = le16_to_cpu(data->udev->descriptor.bcdDevice);
1792 struct hci_rp_read_local_version *rp;
1793 struct sk_buff *skb;
1794 bool is_fake = false;
1795 int ret;
1796
1797 BT_DBG("%s", hdev->name);
1798
1799 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1800 HCI_INIT_TIMEOUT);
1801 if (IS_ERR(skb)) {
1802 int err = PTR_ERR(skb);
1803 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
1804 return err;
1805 }
1806
1807 if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1808 bt_dev_err(hdev, "CSR: Local version length mismatch");
1809 kfree_skb(skb);
1810 return -EIO;
1811 }
1812
1813 rp = (struct hci_rp_read_local_version *)skb->data;
1814
1815 /* Detect a wide host of Chinese controllers that aren't CSR.
1816 *
1817 * Known fake bcdDevices: 0x0100, 0x0134, 0x1915, 0x2520, 0x7558, 0x8891
1818 *
1819 * The main thing they have in common is that these are really popular low-cost
1820 * options that support newer Bluetooth versions but rely on heavy VID/PID
1821 * squatting of this poor old Bluetooth 1.1 device. Even sold as such.
1822 *
1823 * We detect actual CSR devices by checking that the HCI manufacturer code
1824 * is Cambridge Silicon Radio (10) and ensuring that LMP sub-version and
1825 * HCI rev values always match. As they both store the firmware number.
1826 */
1827 if (le16_to_cpu(rp->manufacturer) != 10 ||
1828 le16_to_cpu(rp->hci_rev) != le16_to_cpu(rp->lmp_subver))
1829 is_fake = true;
1830
1831 /* Known legit CSR firmware build numbers and their supported BT versions:
1832 * - 1.1 (0x1) -> 0x0073, 0x020d, 0x033c, 0x034e
1833 * - 1.2 (0x2) -> 0x04d9, 0x0529
1834 * - 2.0 (0x3) -> 0x07a6, 0x07ad, 0x0c5c
1835 * - 2.1 (0x4) -> 0x149c, 0x1735, 0x1899 (0x1899 is a BlueCore4-External)
1836 * - 4.0 (0x6) -> 0x1d86, 0x2031, 0x22bb
1837 *
1838 * e.g. Real CSR dongles with LMP subversion 0x73 are old enough that
1839 * support BT 1.1 only; so it's a dead giveaway when some
1840 * third-party BT 4.0 dongle reuses it.
1841 */
1842 else if (le16_to_cpu(rp->lmp_subver) <= 0x034e &&
1843 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_1)
1844 is_fake = true;
1845
1846 else if (le16_to_cpu(rp->lmp_subver) <= 0x0529 &&
1847 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_2)
1848 is_fake = true;
1849
1850 else if (le16_to_cpu(rp->lmp_subver) <= 0x0c5c &&
1851 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_0)
1852 is_fake = true;
1853
1854 else if (le16_to_cpu(rp->lmp_subver) <= 0x1899 &&
1855 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_1)
1856 is_fake = true;
1857
1858 else if (le16_to_cpu(rp->lmp_subver) <= 0x22bb &&
1859 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_4_0)
1860 is_fake = true;
1861
1862 /* Other clones which beat all the above checks */
1863 else if (bcdDevice == 0x0134 &&
1864 le16_to_cpu(rp->lmp_subver) == 0x0c5c &&
1865 le16_to_cpu(rp->hci_ver) == BLUETOOTH_VER_2_0)
1866 is_fake = true;
1867
1868 if (is_fake) {
1869 bt_dev_warn(hdev, "CSR: Unbranded CSR clone detected; adding workarounds...");
1870
1871 /* Generally these clones have big discrepancies between
1872 * advertised features and what's actually supported.
1873 * Probably will need to be expanded in the future;
1874 * without these the controller will lock up.
1875 */
1876 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1877 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks);
1878
1879 /* Clear the reset quirk since this is not an actual
1880 * early Bluetooth 1.1 device from CSR.
1881 */
1882 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1883 clear_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
1884
1885 /*
1886 * Special workaround for clones with a Barrot 8041a02 chip,
1887 * these clones are really messed-up:
1888 * 1. Their bulk rx endpoint will never report any data unless
1889 * the device was suspended at least once (yes really).
1890 * 2. They will not wakeup when autosuspended and receiving data
1891 * on their bulk rx endpoint from e.g. a keyboard or mouse
1892 * (IOW remote-wakeup support is broken for the bulk endpoint).
1893 *
1894 * To fix 1. enable runtime-suspend, force-suspend the
1895 * hci and then wake-it up by disabling runtime-suspend.
1896 *
1897 * To fix 2. clear the hci's can_wake flag, this way the hci
1898 * will still be autosuspended when it is not open.
1899 */
1900 if (bcdDevice == 0x8891 &&
1901 le16_to_cpu(rp->lmp_subver) == 0x1012 &&
1902 le16_to_cpu(rp->hci_rev) == 0x0810 &&
1903 le16_to_cpu(rp->hci_ver) == BLUETOOTH_VER_4_0) {
1904 bt_dev_warn(hdev, "CSR: detected a fake CSR dongle using a Barrot 8041a02 chip, this chip is very buggy and may have issues");
1905
1906 pm_runtime_allow(&data->udev->dev);
1907
1908 ret = pm_runtime_suspend(&data->udev->dev);
1909 if (ret >= 0)
1910 msleep(200);
1911 else
1912 bt_dev_err(hdev, "Failed to suspend the device for Barrot 8041a02 receive-issue workaround");
1913
1914 pm_runtime_forbid(&data->udev->dev);
1915
1916 device_set_wakeup_capable(&data->udev->dev, false);
1917 /* Re-enable autosuspend if this was requested */
1918 if (enable_autosuspend)
1919 usb_enable_autosuspend(data->udev);
1920 }
1921 }
1922
1923 kfree_skb(skb);
1924
1925 return 0;
1926 }
1927
1928 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1929 struct intel_version *ver)
1930 {
1931 const struct firmware *fw;
1932 char fwname[64];
1933 int ret;
1934
1935 snprintf(fwname, sizeof(fwname),
1936 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1937 ver->hw_platform, ver->hw_variant, ver->hw_revision,
1938 ver->fw_variant, ver->fw_revision, ver->fw_build_num,
1939 ver->fw_build_ww, ver->fw_build_yy);
1940
1941 ret = request_firmware(&fw, fwname, &hdev->dev);
1942 if (ret < 0) {
1943 if (ret == -EINVAL) {
1944 bt_dev_err(hdev, "Intel firmware file request failed (%d)",
1945 ret);
1946 return NULL;
1947 }
1948
1949 bt_dev_err(hdev, "failed to open Intel firmware file: %s (%d)",
1950 fwname, ret);
1951
1952 /* If the correct firmware patch file is not found, use the
1953 * default firmware patch file instead
1954 */
1955 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1956 ver->hw_platform, ver->hw_variant);
1957 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1958 bt_dev_err(hdev, "failed to open default fw file: %s",
1959 fwname);
1960 return NULL;
1961 }
1962 }
1963
1964 bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname);
1965
1966 return fw;
1967 }
1968
1969 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1970 const struct firmware *fw,
1971 const u8 **fw_ptr, int *disable_patch)
1972 {
1973 struct sk_buff *skb;
1974 struct hci_command_hdr *cmd;
1975 const u8 *cmd_param;
1976 struct hci_event_hdr *evt = NULL;
1977 const u8 *evt_param = NULL;
1978 int remain = fw->size - (*fw_ptr - fw->data);
1979
1980 /* The first byte indicates the types of the patch command or event.
1981 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1982 * in the current firmware buffer doesn't start with 0x01 or
1983 * the size of remain buffer is smaller than HCI command header,
1984 * the firmware file is corrupted and it should stop the patching
1985 * process.
1986 */
1987 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1988 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd read");
1989 return -EINVAL;
1990 }
1991 (*fw_ptr)++;
1992 remain--;
1993
1994 cmd = (struct hci_command_hdr *)(*fw_ptr);
1995 *fw_ptr += sizeof(*cmd);
1996 remain -= sizeof(*cmd);
1997
1998 /* Ensure that the remain firmware data is long enough than the length
1999 * of command parameter. If not, the firmware file is corrupted.
2000 */
2001 if (remain < cmd->plen) {
2002 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd len");
2003 return -EFAULT;
2004 }
2005
2006 /* If there is a command that loads a patch in the firmware
2007 * file, then enable the patch upon success, otherwise just
2008 * disable the manufacturer mode, for example patch activation
2009 * is not required when the default firmware patch file is used
2010 * because there are no patch data to load.
2011 */
2012 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
2013 *disable_patch = 0;
2014
2015 cmd_param = *fw_ptr;
2016 *fw_ptr += cmd->plen;
2017 remain -= cmd->plen;
2018
2019 /* This reads the expected events when the above command is sent to the
2020 * device. Some vendor commands expects more than one events, for
2021 * example command status event followed by vendor specific event.
2022 * For this case, it only keeps the last expected event. so the command
2023 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
2024 * last expected event.
2025 */
2026 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
2027 (*fw_ptr)++;
2028 remain--;
2029
2030 evt = (struct hci_event_hdr *)(*fw_ptr);
2031 *fw_ptr += sizeof(*evt);
2032 remain -= sizeof(*evt);
2033
2034 if (remain < evt->plen) {
2035 bt_dev_err(hdev, "Intel fw corrupted: invalid evt len");
2036 return -EFAULT;
2037 }
2038
2039 evt_param = *fw_ptr;
2040 *fw_ptr += evt->plen;
2041 remain -= evt->plen;
2042 }
2043
2044 /* Every HCI commands in the firmware file has its correspond event.
2045 * If event is not found or remain is smaller than zero, the firmware
2046 * file is corrupted.
2047 */
2048 if (!evt || !evt_param || remain < 0) {
2049 bt_dev_err(hdev, "Intel fw corrupted: invalid evt read");
2050 return -EFAULT;
2051 }
2052
2053 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
2054 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
2055 if (IS_ERR(skb)) {
2056 bt_dev_err(hdev, "sending Intel patch command (0x%4.4x) failed (%ld)",
2057 cmd->opcode, PTR_ERR(skb));
2058 return PTR_ERR(skb);
2059 }
2060
2061 /* It ensures that the returned event matches the event data read from
2062 * the firmware file. At fist, it checks the length and then
2063 * the contents of the event.
2064 */
2065 if (skb->len != evt->plen) {
2066 bt_dev_err(hdev, "mismatch event length (opcode 0x%4.4x)",
2067 le16_to_cpu(cmd->opcode));
2068 kfree_skb(skb);
2069 return -EFAULT;
2070 }
2071
2072 if (memcmp(skb->data, evt_param, evt->plen)) {
2073 bt_dev_err(hdev, "mismatch event parameter (opcode 0x%4.4x)",
2074 le16_to_cpu(cmd->opcode));
2075 kfree_skb(skb);
2076 return -EFAULT;
2077 }
2078 kfree_skb(skb);
2079
2080 return 0;
2081 }
2082
2083 static int btusb_setup_intel(struct hci_dev *hdev)
2084 {
2085 struct sk_buff *skb;
2086 const struct firmware *fw;
2087 const u8 *fw_ptr;
2088 int disable_patch, err;
2089 struct intel_version ver;
2090
2091 BT_DBG("%s", hdev->name);
2092
2093 /* The controller has a bug with the first HCI command sent to it
2094 * returning number of completed commands as zero. This would stall the
2095 * command processing in the Bluetooth core.
2096 *
2097 * As a workaround, send HCI Reset command first which will reset the
2098 * number of completed commands and allow normal command processing
2099 * from now on.
2100 */
2101 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2102 if (IS_ERR(skb)) {
2103 bt_dev_err(hdev, "sending initial HCI reset command failed (%ld)",
2104 PTR_ERR(skb));
2105 return PTR_ERR(skb);
2106 }
2107 kfree_skb(skb);
2108
2109 /* Read Intel specific controller version first to allow selection of
2110 * which firmware file to load.
2111 *
2112 * The returned information are hardware variant and revision plus
2113 * firmware variant, revision and build number.
2114 */
2115 err = btintel_read_version(hdev, &ver);
2116 if (err)
2117 return err;
2118
2119 bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
2120 ver.hw_platform, ver.hw_variant, ver.hw_revision,
2121 ver.fw_variant, ver.fw_revision, ver.fw_build_num,
2122 ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
2123
2124 /* fw_patch_num indicates the version of patch the device currently
2125 * have. If there is no patch data in the device, it is always 0x00.
2126 * So, if it is other than 0x00, no need to patch the device again.
2127 */
2128 if (ver.fw_patch_num) {
2129 bt_dev_info(hdev, "Intel device is already patched. "
2130 "patch num: %02x", ver.fw_patch_num);
2131 goto complete;
2132 }
2133
2134 /* Opens the firmware patch file based on the firmware version read
2135 * from the controller. If it fails to open the matching firmware
2136 * patch file, it tries to open the default firmware patch file.
2137 * If no patch file is found, allow the device to operate without
2138 * a patch.
2139 */
2140 fw = btusb_setup_intel_get_fw(hdev, &ver);
2141 if (!fw)
2142 goto complete;
2143 fw_ptr = fw->data;
2144
2145 /* Enable the manufacturer mode of the controller.
2146 * Only while this mode is enabled, the driver can download the
2147 * firmware patch data and configuration parameters.
2148 */
2149 err = btintel_enter_mfg(hdev);
2150 if (err) {
2151 release_firmware(fw);
2152 return err;
2153 }
2154
2155 disable_patch = 1;
2156
2157 /* The firmware data file consists of list of Intel specific HCI
2158 * commands and its expected events. The first byte indicates the
2159 * type of the message, either HCI command or HCI event.
2160 *
2161 * It reads the command and its expected event from the firmware file,
2162 * and send to the controller. Once __hci_cmd_sync_ev() returns,
2163 * the returned event is compared with the event read from the firmware
2164 * file and it will continue until all the messages are downloaded to
2165 * the controller.
2166 *
2167 * Once the firmware patching is completed successfully,
2168 * the manufacturer mode is disabled with reset and activating the
2169 * downloaded patch.
2170 *
2171 * If the firmware patching fails, the manufacturer mode is
2172 * disabled with reset and deactivating the patch.
2173 *
2174 * If the default patch file is used, no reset is done when disabling
2175 * the manufacturer.
2176 */
2177 while (fw->size > fw_ptr - fw->data) {
2178 int ret;
2179
2180 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
2181 &disable_patch);
2182 if (ret < 0)
2183 goto exit_mfg_deactivate;
2184 }
2185
2186 release_firmware(fw);
2187
2188 if (disable_patch)
2189 goto exit_mfg_disable;
2190
2191 /* Patching completed successfully and disable the manufacturer mode
2192 * with reset and activate the downloaded firmware patches.
2193 */
2194 err = btintel_exit_mfg(hdev, true, true);
2195 if (err)
2196 return err;
2197
2198 /* Need build number for downloaded fw patches in
2199 * every power-on boot
2200 */
2201 err = btintel_read_version(hdev, &ver);
2202 if (err)
2203 return err;
2204 bt_dev_info(hdev, "Intel BT fw patch 0x%02x completed & activated",
2205 ver.fw_patch_num);
2206
2207 goto complete;
2208
2209 exit_mfg_disable:
2210 /* Disable the manufacturer mode without reset */
2211 err = btintel_exit_mfg(hdev, false, false);
2212 if (err)
2213 return err;
2214
2215 bt_dev_info(hdev, "Intel firmware patch completed");
2216
2217 goto complete;
2218
2219 exit_mfg_deactivate:
2220 release_firmware(fw);
2221
2222 /* Patching failed. Disable the manufacturer mode with reset and
2223 * deactivate the downloaded firmware patches.
2224 */
2225 err = btintel_exit_mfg(hdev, true, false);
2226 if (err)
2227 return err;
2228
2229 bt_dev_info(hdev, "Intel firmware patch completed and deactivated");
2230
2231 complete:
2232 /* Set the event mask for Intel specific vendor events. This enables
2233 * a few extra events that are useful during general operation.
2234 */
2235 btintel_set_event_mask_mfg(hdev, false);
2236
2237 btintel_check_bdaddr(hdev);
2238 return 0;
2239 }
2240
2241 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
2242 {
2243 struct sk_buff *skb;
2244 struct hci_event_hdr *hdr;
2245 struct hci_ev_cmd_complete *evt;
2246
2247 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
2248 if (!skb)
2249 return -ENOMEM;
2250
2251 hdr = skb_put(skb, sizeof(*hdr));
2252 hdr->evt = HCI_EV_CMD_COMPLETE;
2253 hdr->plen = sizeof(*evt) + 1;
2254
2255 evt = skb_put(skb, sizeof(*evt));
2256 evt->ncmd = 0x01;
2257 evt->opcode = cpu_to_le16(opcode);
2258
2259 skb_put_u8(skb, 0x00);
2260
2261 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2262
2263 return hci_recv_frame(hdev, skb);
2264 }
2265
2266 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
2267 int count)
2268 {
2269 /* When the device is in bootloader mode, then it can send
2270 * events via the bulk endpoint. These events are treated the
2271 * same way as the ones received from the interrupt endpoint.
2272 */
2273 if (test_bit(BTUSB_BOOTLOADER, &data->flags))
2274 return btusb_recv_intr(data, buffer, count);
2275
2276 return btusb_recv_bulk(data, buffer, count);
2277 }
2278
2279 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
2280 unsigned int len)
2281 {
2282 const struct intel_bootup *evt = ptr;
2283
2284 if (len != sizeof(*evt))
2285 return;
2286
2287 if (test_and_clear_bit(BTUSB_BOOTING, &data->flags))
2288 wake_up_bit(&data->flags, BTUSB_BOOTING);
2289 }
2290
2291 static void btusb_intel_secure_send_result(struct btusb_data *data,
2292 const void *ptr, unsigned int len)
2293 {
2294 const struct intel_secure_send_result *evt = ptr;
2295
2296 if (len != sizeof(*evt))
2297 return;
2298
2299 if (evt->result)
2300 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
2301
2302 if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
2303 test_bit(BTUSB_FIRMWARE_LOADED, &data->flags))
2304 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
2305 }
2306
2307 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2308 {
2309 struct btusb_data *data = hci_get_drvdata(hdev);
2310
2311 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2312 struct hci_event_hdr *hdr = (void *)skb->data;
2313
2314 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2315 hdr->plen > 0) {
2316 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2317 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2318
2319 switch (skb->data[2]) {
2320 case 0x02:
2321 /* When switching to the operational firmware
2322 * the device sends a vendor specific event
2323 * indicating that the bootup completed.
2324 */
2325 btusb_intel_bootup(data, ptr, len);
2326 break;
2327 case 0x06:
2328 /* When the firmware loading completes the
2329 * device sends out a vendor specific event
2330 * indicating the result of the firmware
2331 * loading.
2332 */
2333 btusb_intel_secure_send_result(data, ptr, len);
2334 break;
2335 }
2336 }
2337 }
2338
2339 return hci_recv_frame(hdev, skb);
2340 }
2341
2342 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2343 {
2344 struct btusb_data *data = hci_get_drvdata(hdev);
2345 struct urb *urb;
2346
2347 BT_DBG("%s", hdev->name);
2348
2349 switch (hci_skb_pkt_type(skb)) {
2350 case HCI_COMMAND_PKT:
2351 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2352 struct hci_command_hdr *cmd = (void *)skb->data;
2353 __u16 opcode = le16_to_cpu(cmd->opcode);
2354
2355 /* When in bootloader mode and the command 0xfc09
2356 * is received, it needs to be send down the
2357 * bulk endpoint. So allocate a bulk URB instead.
2358 */
2359 if (opcode == 0xfc09)
2360 urb = alloc_bulk_urb(hdev, skb);
2361 else
2362 urb = alloc_ctrl_urb(hdev, skb);
2363
2364 /* When the 0xfc01 command is issued to boot into
2365 * the operational firmware, it will actually not
2366 * send a command complete event. To keep the flow
2367 * control working inject that event here.
2368 */
2369 if (opcode == 0xfc01)
2370 inject_cmd_complete(hdev, opcode);
2371 } else {
2372 urb = alloc_ctrl_urb(hdev, skb);
2373 }
2374 if (IS_ERR(urb))
2375 return PTR_ERR(urb);
2376
2377 hdev->stat.cmd_tx++;
2378 return submit_or_queue_tx_urb(hdev, urb);
2379
2380 case HCI_ACLDATA_PKT:
2381 urb = alloc_bulk_urb(hdev, skb);
2382 if (IS_ERR(urb))
2383 return PTR_ERR(urb);
2384
2385 hdev->stat.acl_tx++;
2386 return submit_or_queue_tx_urb(hdev, urb);
2387
2388 case HCI_SCODATA_PKT:
2389 if (hci_conn_num(hdev, SCO_LINK) < 1)
2390 return -ENODEV;
2391
2392 urb = alloc_isoc_urb(hdev, skb);
2393 if (IS_ERR(urb))
2394 return PTR_ERR(urb);
2395
2396 hdev->stat.sco_tx++;
2397 return submit_tx_urb(hdev, urb);
2398 }
2399
2400 return -EILSEQ;
2401 }
2402
2403 static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver,
2404 struct intel_boot_params *params,
2405 char *fw_name, size_t len,
2406 const char *suffix)
2407 {
2408 switch (ver->hw_variant) {
2409 case 0x0b: /* SfP */
2410 case 0x0c: /* WsP */
2411 snprintf(fw_name, len, "intel/ibt-%u-%u.%s",
2412 le16_to_cpu(ver->hw_variant),
2413 le16_to_cpu(params->dev_revid),
2414 suffix);
2415 break;
2416 case 0x11: /* JfP */
2417 case 0x12: /* ThP */
2418 case 0x13: /* HrP */
2419 case 0x14: /* CcP */
2420 snprintf(fw_name, len, "intel/ibt-%u-%u-%u.%s",
2421 le16_to_cpu(ver->hw_variant),
2422 le16_to_cpu(ver->hw_revision),
2423 le16_to_cpu(ver->fw_revision),
2424 suffix);
2425 break;
2426 default:
2427 return false;
2428 }
2429 return true;
2430 }
2431
2432 static void btusb_setup_intel_newgen_get_fw_name(const struct intel_version_tlv *ver_tlv,
2433 char *fw_name, size_t len,
2434 const char *suffix)
2435 {
2436 /* The firmware file name for new generation controllers will be
2437 * ibt-<cnvi_top type+cnvi_top step>-<cnvr_top type+cnvr_top step>
2438 */
2439 snprintf(fw_name, len, "intel/ibt-%04x-%04x.%s",
2440 INTEL_CNVX_TOP_PACK_SWAB(INTEL_CNVX_TOP_TYPE(ver_tlv->cnvi_top),
2441 INTEL_CNVX_TOP_STEP(ver_tlv->cnvi_top)),
2442 INTEL_CNVX_TOP_PACK_SWAB(INTEL_CNVX_TOP_TYPE(ver_tlv->cnvr_top),
2443 INTEL_CNVX_TOP_STEP(ver_tlv->cnvr_top)),
2444 suffix);
2445 }
2446
2447 static int btusb_intel_download_firmware_newgen(struct hci_dev *hdev,
2448 struct intel_version_tlv *ver,
2449 u32 *boot_param)
2450 {
2451 const struct firmware *fw;
2452 char fwname[64];
2453 int err;
2454 struct btusb_data *data = hci_get_drvdata(hdev);
2455
2456 if (!ver || !boot_param)
2457 return -EINVAL;
2458
2459 /* The hardware platform number has a fixed value of 0x37 and
2460 * for now only accept this single value.
2461 */
2462 if (INTEL_HW_PLATFORM(ver->cnvi_bt) != 0x37) {
2463 bt_dev_err(hdev, "Unsupported Intel hardware platform (0x%2x)",
2464 INTEL_HW_PLATFORM(ver->cnvi_bt));
2465 return -EINVAL;
2466 }
2467
2468 /* The firmware variant determines if the device is in bootloader
2469 * mode or is running operational firmware. The value 0x03 identifies
2470 * the bootloader and the value 0x23 identifies the operational
2471 * firmware.
2472 *
2473 * When the operational firmware is already present, then only
2474 * the check for valid Bluetooth device address is needed. This
2475 * determines if the device will be added as configured or
2476 * unconfigured controller.
2477 *
2478 * It is not possible to use the Secure Boot Parameters in this
2479 * case since that command is only available in bootloader mode.
2480 */
2481 if (ver->img_type == 0x03) {
2482 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2483 btintel_check_bdaddr(hdev);
2484 return 0;
2485 }
2486
2487 /* Check for supported iBT hardware variants of this firmware
2488 * loading method.
2489 *
2490 * This check has been put in place to ensure correct forward
2491 * compatibility options when newer hardware variants come along.
2492 */
2493 switch (INTEL_HW_VARIANT(ver->cnvi_bt)) {
2494 case 0x17: /* TyP */
2495 case 0x18: /* Slr */
2496 case 0x19: /* Slr-F */
2497 break;
2498 default:
2499 bt_dev_err(hdev, "Unsupported Intel hardware variant (0x%x)",
2500 INTEL_HW_VARIANT(ver->cnvi_bt));
2501 return -EINVAL;
2502 }
2503
2504 /* If the device is not in bootloader mode, then the only possible
2505 * choice is to return an error and abort the device initialization.
2506 */
2507 if (ver->img_type != 0x01) {
2508 bt_dev_err(hdev, "Unsupported Intel firmware variant (0x%x)",
2509 ver->img_type);
2510 return -ENODEV;
2511 }
2512
2513 /* It is required that every single firmware fragment is acknowledged
2514 * with a command complete event. If the boot parameters indicate
2515 * that this bootloader does not send them, then abort the setup.
2516 */
2517 if (ver->limited_cce != 0x00) {
2518 bt_dev_err(hdev, "Unsupported Intel firmware loading method (0x%x)",
2519 ver->limited_cce);
2520 return -EINVAL;
2521 }
2522
2523 /* Secure boot engine type should be either 1 (ECDSA) or 0 (RSA) */
2524 if (ver->sbe_type > 0x01) {
2525 bt_dev_err(hdev, "Unsupported Intel secure boot engine type (0x%x)",
2526 ver->sbe_type);
2527 return -EINVAL;
2528 }
2529
2530 /* If the OTP has no valid Bluetooth device address, then there will
2531 * also be no valid address for the operational firmware.
2532 */
2533 if (!bacmp(&ver->otp_bd_addr, BDADDR_ANY)) {
2534 bt_dev_info(hdev, "No device address configured");
2535 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2536 }
2537
2538 btusb_setup_intel_newgen_get_fw_name(ver, fwname, sizeof(fwname), "sfi");
2539 err = request_firmware(&fw, fwname, &hdev->dev);
2540 if (err < 0) {
2541 bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err);
2542 return err;
2543 }
2544
2545 bt_dev_info(hdev, "Found device firmware: %s", fwname);
2546
2547 if (fw->size < 644) {
2548 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2549 fw->size);
2550 err = -EBADF;
2551 goto done;
2552 }
2553
2554 set_bit(BTUSB_DOWNLOADING, &data->flags);
2555
2556 /* Start firmware downloading and get boot parameter */
2557 err = btintel_download_firmware_newgen(hdev, fw, boot_param,
2558 INTEL_HW_VARIANT(ver->cnvi_bt),
2559 ver->sbe_type);
2560 if (err < 0) {
2561 /* When FW download fails, send Intel Reset to retry
2562 * FW download.
2563 */
2564 btintel_reset_to_bootloader(hdev);
2565 goto done;
2566 }
2567 set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2568
2569 bt_dev_info(hdev, "Waiting for firmware download to complete");
2570
2571 /* Before switching the device into operational mode and with that
2572 * booting the loaded firmware, wait for the bootloader notification
2573 * that all fragments have been successfully received.
2574 *
2575 * When the event processing receives the notification, then the
2576 * BTUSB_DOWNLOADING flag will be cleared.
2577 *
2578 * The firmware loading should not take longer than 5 seconds
2579 * and thus just timeout if that happens and fail the setup
2580 * of this device.
2581 */
2582 err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2583 TASK_INTERRUPTIBLE,
2584 msecs_to_jiffies(5000));
2585 if (err == -EINTR) {
2586 bt_dev_err(hdev, "Firmware loading interrupted");
2587 goto done;
2588 }
2589
2590 if (err) {
2591 bt_dev_err(hdev, "Firmware loading timeout");
2592 err = -ETIMEDOUT;
2593 btintel_reset_to_bootloader(hdev);
2594 goto done;
2595 }
2596
2597 if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2598 bt_dev_err(hdev, "Firmware loading failed");
2599 err = -ENOEXEC;
2600 goto done;
2601 }
2602
2603 done:
2604 release_firmware(fw);
2605 return err;
2606 }
2607
2608 static int btusb_intel_download_firmware(struct hci_dev *hdev,
2609 struct intel_version *ver,
2610 struct intel_boot_params *params,
2611 u32 *boot_param)
2612 {
2613 const struct firmware *fw;
2614 char fwname[64];
2615 int err;
2616 struct btusb_data *data = hci_get_drvdata(hdev);
2617
2618 if (!ver || !params)
2619 return -EINVAL;
2620
2621 /* The hardware platform number has a fixed value of 0x37 and
2622 * for now only accept this single value.
2623 */
2624 if (ver->hw_platform != 0x37) {
2625 bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)",
2626 ver->hw_platform);
2627 return -EINVAL;
2628 }
2629
2630 /* Check for supported iBT hardware variants of this firmware
2631 * loading method.
2632 *
2633 * This check has been put in place to ensure correct forward
2634 * compatibility options when newer hardware variants come along.
2635 */
2636 switch (ver->hw_variant) {
2637 case 0x0b: /* SfP */
2638 case 0x0c: /* WsP */
2639 case 0x11: /* JfP */
2640 case 0x12: /* ThP */
2641 case 0x13: /* HrP */
2642 case 0x14: /* CcP */
2643 break;
2644 default:
2645 bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",
2646 ver->hw_variant);
2647 return -EINVAL;
2648 }
2649
2650 btintel_version_info(hdev, ver);
2651
2652 /* The firmware variant determines if the device is in bootloader
2653 * mode or is running operational firmware. The value 0x06 identifies
2654 * the bootloader and the value 0x23 identifies the operational
2655 * firmware.
2656 *
2657 * When the operational firmware is already present, then only
2658 * the check for valid Bluetooth device address is needed. This
2659 * determines if the device will be added as configured or
2660 * unconfigured controller.
2661 *
2662 * It is not possible to use the Secure Boot Parameters in this
2663 * case since that command is only available in bootloader mode.
2664 */
2665 if (ver->fw_variant == 0x23) {
2666 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2667 btintel_check_bdaddr(hdev);
2668 return 0;
2669 }
2670
2671 /* If the device is not in bootloader mode, then the only possible
2672 * choice is to return an error and abort the device initialization.
2673 */
2674 if (ver->fw_variant != 0x06) {
2675 bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)",
2676 ver->fw_variant);
2677 return -ENODEV;
2678 }
2679
2680 /* Read the secure boot parameters to identify the operating
2681 * details of the bootloader.
2682 */
2683 err = btintel_read_boot_params(hdev, params);
2684 if (err)
2685 return err;
2686
2687 /* It is required that every single firmware fragment is acknowledged
2688 * with a command complete event. If the boot parameters indicate
2689 * that this bootloader does not send them, then abort the setup.
2690 */
2691 if (params->limited_cce != 0x00) {
2692 bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",
2693 params->limited_cce);
2694 return -EINVAL;
2695 }
2696
2697 /* If the OTP has no valid Bluetooth device address, then there will
2698 * also be no valid address for the operational firmware.
2699 */
2700 if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2701 bt_dev_info(hdev, "No device address configured");
2702 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2703 }
2704
2705 /* With this Intel bootloader only the hardware variant and device
2706 * revision information are used to select the right firmware for SfP
2707 * and WsP.
2708 *
2709 * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2710 *
2711 * Currently the supported hardware variants are:
2712 * 11 (0x0b) for iBT3.0 (LnP/SfP)
2713 * 12 (0x0c) for iBT3.5 (WsP)
2714 *
2715 * For ThP/JfP and for future SKU's, the FW name varies based on HW
2716 * variant, HW revision and FW revision, as these are dependent on CNVi
2717 * and RF Combination.
2718 *
2719 * 17 (0x11) for iBT3.5 (JfP)
2720 * 18 (0x12) for iBT3.5 (ThP)
2721 *
2722 * The firmware file name for these will be
2723 * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi.
2724 *
2725 */
2726 err = btusb_setup_intel_new_get_fw_name(ver, params, fwname,
2727 sizeof(fwname), "sfi");
2728 if (!err) {
2729 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2730 return -EINVAL;
2731 }
2732
2733 err = request_firmware(&fw, fwname, &hdev->dev);
2734 if (err < 0) {
2735 bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err);
2736 return err;
2737 }
2738
2739 bt_dev_info(hdev, "Found device firmware: %s", fwname);
2740
2741 if (fw->size < 644) {
2742 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2743 fw->size);
2744 err = -EBADF;
2745 goto done;
2746 }
2747
2748 set_bit(BTUSB_DOWNLOADING, &data->flags);
2749
2750 /* Start firmware downloading and get boot parameter */
2751 err = btintel_download_firmware(hdev, fw, boot_param);
2752 if (err < 0) {
2753 /* When FW download fails, send Intel Reset to retry
2754 * FW download.
2755 */
2756 btintel_reset_to_bootloader(hdev);
2757 goto done;
2758 }
2759 set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2760
2761 bt_dev_info(hdev, "Waiting for firmware download to complete");
2762
2763 /* Before switching the device into operational mode and with that
2764 * booting the loaded firmware, wait for the bootloader notification
2765 * that all fragments have been successfully received.
2766 *
2767 * When the event processing receives the notification, then the
2768 * BTUSB_DOWNLOADING flag will be cleared.
2769 *
2770 * The firmware loading should not take longer than 5 seconds
2771 * and thus just timeout if that happens and fail the setup
2772 * of this device.
2773 */
2774 err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2775 TASK_INTERRUPTIBLE,
2776 msecs_to_jiffies(5000));
2777 if (err == -EINTR) {
2778 bt_dev_err(hdev, "Firmware loading interrupted");
2779 goto done;
2780 }
2781
2782 if (err) {
2783 bt_dev_err(hdev, "Firmware loading timeout");
2784 err = -ETIMEDOUT;
2785 btintel_reset_to_bootloader(hdev);
2786 goto done;
2787 }
2788
2789 if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2790 bt_dev_err(hdev, "Firmware loading failed");
2791 err = -ENOEXEC;
2792 goto done;
2793 }
2794
2795 done:
2796 release_firmware(fw);
2797 return err;
2798 }
2799
2800 static int btusb_setup_intel_new(struct hci_dev *hdev)
2801 {
2802 struct btusb_data *data = hci_get_drvdata(hdev);
2803 struct intel_version ver;
2804 struct intel_boot_params params;
2805 u32 boot_param;
2806 char ddcname[64];
2807 ktime_t calltime, delta, rettime;
2808 unsigned long long duration;
2809 int err;
2810 struct intel_debug_features features;
2811
2812 BT_DBG("%s", hdev->name);
2813
2814 /* Set the default boot parameter to 0x0 and it is updated to
2815 * SKU specific boot parameter after reading Intel_Write_Boot_Params
2816 * command while downloading the firmware.
2817 */
2818 boot_param = 0x00000000;
2819
2820 calltime = ktime_get();
2821
2822 /* Read the Intel version information to determine if the device
2823 * is in bootloader mode or if it already has operational firmware
2824 * loaded.
2825 */
2826 err = btintel_read_version(hdev, &ver);
2827 if (err) {
2828 bt_dev_err(hdev, "Intel Read version failed (%d)", err);
2829 btintel_reset_to_bootloader(hdev);
2830 return err;
2831 }
2832
2833 err = btusb_intel_download_firmware(hdev, &ver, &params, &boot_param);
2834 if (err)
2835 return err;
2836
2837 /* controller is already having an operational firmware */
2838 if (ver.fw_variant == 0x23)
2839 goto finish;
2840
2841 rettime = ktime_get();
2842 delta = ktime_sub(rettime, calltime);
2843 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2844
2845 bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2846
2847 calltime = ktime_get();
2848
2849 set_bit(BTUSB_BOOTING, &data->flags);
2850
2851 err = btintel_send_intel_reset(hdev, boot_param);
2852 if (err) {
2853 bt_dev_err(hdev, "Intel Soft Reset failed (%d)", err);
2854 btintel_reset_to_bootloader(hdev);
2855 return err;
2856 }
2857
2858 /* The bootloader will not indicate when the device is ready. This
2859 * is done by the operational firmware sending bootup notification.
2860 *
2861 * Booting into operational firmware should not take longer than
2862 * 1 second. However if that happens, then just fail the setup
2863 * since something went wrong.
2864 */
2865 bt_dev_info(hdev, "Waiting for device to boot");
2866
2867 err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2868 TASK_INTERRUPTIBLE,
2869 msecs_to_jiffies(1000));
2870
2871 if (err == -EINTR) {
2872 bt_dev_err(hdev, "Device boot interrupted");
2873 return -EINTR;
2874 }
2875
2876 if (err) {
2877 bt_dev_err(hdev, "Device boot timeout");
2878 btintel_reset_to_bootloader(hdev);
2879 return -ETIMEDOUT;
2880 }
2881
2882 rettime = ktime_get();
2883 delta = ktime_sub(rettime, calltime);
2884 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2885
2886 bt_dev_info(hdev, "Device booted in %llu usecs", duration);
2887
2888 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2889
2890 err = btusb_setup_intel_new_get_fw_name(&ver, &params, ddcname,
2891 sizeof(ddcname), "ddc");
2892
2893 if (!err) {
2894 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2895 } else {
2896 /* Once the device is running in operational mode, it needs to
2897 * apply the device configuration (DDC) parameters.
2898 *
2899 * The device can work without DDC parameters, so even if it
2900 * fails to load the file, no need to fail the setup.
2901 */
2902 btintel_load_ddc_config(hdev, ddcname);
2903 }
2904
2905 /* Read the Intel supported features and if new exception formats
2906 * supported, need to load the additional DDC config to enable.
2907 */
2908 btintel_read_debug_features(hdev, &features);
2909
2910 /* Set DDC mask for available debug features */
2911 btintel_set_debug_features(hdev, &features);
2912
2913 /* Read the Intel version information after loading the FW */
2914 err = btintel_read_version(hdev, &ver);
2915 if (err)
2916 return err;
2917
2918 btintel_version_info(hdev, &ver);
2919
2920 finish:
2921 /* All Intel controllers that support the Microsoft vendor
2922 * extension are using 0xFC1E for VsMsftOpCode.
2923 */
2924 switch (ver.hw_variant) {
2925 case 0x11: /* JfP */
2926 case 0x12: /* ThP */
2927 case 0x13: /* HrP */
2928 case 0x14: /* CcP */
2929 hci_set_msft_opcode(hdev, 0xFC1E);
2930 break;
2931 }
2932
2933 /* Set the event mask for Intel specific vendor events. This enables
2934 * a few extra events that are useful during general operation. It
2935 * does not enable any debugging related events.
2936 *
2937 * The device will function correctly without these events enabled
2938 * and thus no need to fail the setup.
2939 */
2940 btintel_set_event_mask(hdev, false);
2941
2942 return 0;
2943 }
2944
2945 static int btusb_setup_intel_newgen(struct hci_dev *hdev)
2946 {
2947 struct btusb_data *data = hci_get_drvdata(hdev);
2948 u32 boot_param;
2949 char ddcname[64];
2950 ktime_t calltime, delta, rettime;
2951 unsigned long long duration;
2952 int err;
2953 struct intel_debug_features features;
2954 struct intel_version_tlv version;
2955
2956 bt_dev_dbg(hdev, "");
2957
2958 /* Set the default boot parameter to 0x0 and it is updated to
2959 * SKU specific boot parameter after reading Intel_Write_Boot_Params
2960 * command while downloading the firmware.
2961 */
2962 boot_param = 0x00000000;
2963
2964 calltime = ktime_get();
2965
2966 /* Read the Intel version information to determine if the device
2967 * is in bootloader mode or if it already has operational firmware
2968 * loaded.
2969 */
2970 err = btintel_read_version_tlv(hdev, &version);
2971 if (err) {
2972 bt_dev_err(hdev, "Intel Read version failed (%d)", err);
2973 btintel_reset_to_bootloader(hdev);
2974 return err;
2975 }
2976
2977 btintel_version_info_tlv(hdev, &version);
2978
2979 err = btusb_intel_download_firmware_newgen(hdev, &version, &boot_param);
2980 if (err)
2981 return err;
2982
2983 /* check if controller is already having an operational firmware */
2984 if (version.img_type == 0x03)
2985 goto finish;
2986
2987 rettime = ktime_get();
2988 delta = ktime_sub(rettime, calltime);
2989 duration = (unsigned long long)ktime_to_ns(delta) >> 10;
2990
2991 bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2992
2993 calltime = ktime_get();
2994
2995 set_bit(BTUSB_BOOTING, &data->flags);
2996
2997 err = btintel_send_intel_reset(hdev, boot_param);
2998 if (err) {
2999 bt_dev_err(hdev, "Intel Soft Reset failed (%d)", err);
3000 btintel_reset_to_bootloader(hdev);
3001 return err;
3002 }
3003
3004 /* The bootloader will not indicate when the device is ready. This
3005 * is done by the operational firmware sending bootup notification.
3006 *
3007 * Booting into operational firmware should not take longer than
3008 * 1 second. However if that happens, then just fail the setup
3009 * since something went wrong.
3010 */
3011 bt_dev_info(hdev, "Waiting for device to boot");
3012
3013 err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
3014 TASK_INTERRUPTIBLE,
3015 msecs_to_jiffies(1000));
3016
3017 if (err == -EINTR) {
3018 bt_dev_err(hdev, "Device boot interrupted");
3019 return -EINTR;
3020 }
3021
3022 if (err) {
3023 bt_dev_err(hdev, "Device boot timeout");
3024 btintel_reset_to_bootloader(hdev);
3025 return -ETIMEDOUT;
3026 }
3027
3028 rettime = ktime_get();
3029 delta = ktime_sub(rettime, calltime);
3030 duration = (unsigned long long)ktime_to_ns(delta) >> 10;
3031
3032 bt_dev_info(hdev, "Device booted in %llu usecs", duration);
3033
3034 clear_bit(BTUSB_BOOTLOADER, &data->flags);
3035
3036 btusb_setup_intel_newgen_get_fw_name(&version, ddcname, sizeof(ddcname),
3037 "ddc");
3038 /* Once the device is running in operational mode, it needs to
3039 * apply the device configuration (DDC) parameters.
3040 *
3041 * The device can work without DDC parameters, so even if it
3042 * fails to load the file, no need to fail the setup.
3043 */
3044 btintel_load_ddc_config(hdev, ddcname);
3045
3046 /* Read the Intel supported features and if new exception formats
3047 * supported, need to load the additional DDC config to enable.
3048 */
3049 btintel_read_debug_features(hdev, &features);
3050
3051 /* Set DDC mask for available debug features */
3052 btintel_set_debug_features(hdev, &features);
3053
3054 /* Read the Intel version information after loading the FW */
3055 err = btintel_read_version_tlv(hdev, &version);
3056 if (err)
3057 return err;
3058
3059 btintel_version_info_tlv(hdev, &version);
3060
3061 finish:
3062 /* Set the event mask for Intel specific vendor events. This enables
3063 * a few extra events that are useful during general operation. It
3064 * does not enable any debugging related events.
3065 *
3066 * The device will function correctly without these events enabled
3067 * and thus no need to fail the setup.
3068 */
3069 btintel_set_event_mask(hdev, false);
3070
3071 return 0;
3072 }
3073 static int btusb_shutdown_intel(struct hci_dev *hdev)
3074 {
3075 struct sk_buff *skb;
3076 long ret;
3077
3078 /* In the shutdown sequence where Bluetooth is turned off followed
3079 * by WiFi being turned off, turning WiFi back on causes issue with
3080 * the RF calibration.
3081 *
3082 * To ensure that any RF activity has been stopped, issue HCI Reset
3083 * command to clear all ongoing activity including advertising,
3084 * scanning etc.
3085 */
3086 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
3087 if (IS_ERR(skb)) {
3088 ret = PTR_ERR(skb);
3089 bt_dev_err(hdev, "HCI reset during shutdown failed");
3090 return ret;
3091 }
3092 kfree_skb(skb);
3093
3094 /* Some platforms have an issue with BT LED when the interface is
3095 * down or BT radio is turned off, which takes 5 seconds to BT LED
3096 * goes off. This command turns off the BT LED immediately.
3097 */
3098 skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
3099 if (IS_ERR(skb)) {
3100 ret = PTR_ERR(skb);
3101 bt_dev_err(hdev, "turning off Intel device LED failed");
3102 return ret;
3103 }
3104 kfree_skb(skb);
3105
3106 return 0;
3107 }
3108
3109 static int btusb_shutdown_intel_new(struct hci_dev *hdev)
3110 {
3111 struct sk_buff *skb;
3112
3113 /* Send HCI Reset to the controller to stop any BT activity which
3114 * were triggered. This will help to save power and maintain the
3115 * sync b/w Host and controller
3116 */
3117 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
3118 if (IS_ERR(skb)) {
3119 bt_dev_err(hdev, "HCI reset during shutdown failed");
3120 return PTR_ERR(skb);
3121 }
3122 kfree_skb(skb);
3123
3124 return 0;
3125 }
3126
3127 #define FIRMWARE_MT7663 "mediatek/mt7663pr2h.bin"
3128 #define FIRMWARE_MT7668 "mediatek/mt7668pr2h.bin"
3129
3130 #define HCI_WMT_MAX_EVENT_SIZE 64
3131 /* It is for mt79xx download rom patch*/
3132 #define MTK_FW_ROM_PATCH_HEADER_SIZE 32
3133 #define MTK_FW_ROM_PATCH_GD_SIZE 64
3134 #define MTK_FW_ROM_PATCH_SEC_MAP_SIZE 64
3135 #define MTK_SEC_MAP_COMMON_SIZE 12
3136 #define MTK_SEC_MAP_NEED_SEND_SIZE 52
3137
3138 enum {
3139 BTMTK_WMT_PATCH_DWNLD = 0x1,
3140 BTMTK_WMT_FUNC_CTRL = 0x6,
3141 BTMTK_WMT_RST = 0x7,
3142 BTMTK_WMT_SEMAPHORE = 0x17,
3143 };
3144
3145 enum {
3146 BTMTK_WMT_INVALID,
3147 BTMTK_WMT_PATCH_UNDONE,
3148 BTMTK_WMT_PATCH_PROGRESS,
3149 BTMTK_WMT_PATCH_DONE,
3150 BTMTK_WMT_ON_UNDONE,
3151 BTMTK_WMT_ON_DONE,
3152 BTMTK_WMT_ON_PROGRESS,
3153 };
3154
3155 struct btmtk_wmt_hdr {
3156 u8 dir;
3157 u8 op;
3158 __le16 dlen;
3159 u8 flag;
3160 } __packed;
3161
3162 struct btmtk_hci_wmt_cmd {
3163 struct btmtk_wmt_hdr hdr;
3164 u8 data[1000];
3165 } __packed;
3166
3167 struct btmtk_hci_wmt_evt {
3168 struct hci_event_hdr hhdr;
3169 struct btmtk_wmt_hdr whdr;
3170 } __packed;
3171
3172 struct btmtk_hci_wmt_evt_funcc {
3173 struct btmtk_hci_wmt_evt hwhdr;
3174 __be16 status;
3175 } __packed;
3176
3177 struct btmtk_tci_sleep {
3178 u8 mode;
3179 __le16 duration;
3180 __le16 host_duration;
3181 u8 host_wakeup_pin;
3182 u8 time_compensation;
3183 } __packed;
3184
3185 struct btmtk_hci_wmt_params {
3186 u8 op;
3187 u8 flag;
3188 u16 dlen;
3189 const void *data;
3190 u32 *status;
3191 };
3192
3193 struct btmtk_patch_header {
3194 u8 datetime[16];
3195 u8 platform[4];
3196 __le16 hwver;
3197 __le16 swver;
3198 __le32 magicnum;
3199 } __packed;
3200
3201 struct btmtk_global_desc {
3202 __le32 patch_ver;
3203 __le32 sub_sys;
3204 __le32 feature_opt;
3205 __le32 section_num;
3206 } __packed;
3207
3208 struct btmtk_section_map {
3209 __le32 sectype;
3210 __le32 secoffset;
3211 __le32 secsize;
3212 union {
3213 __le32 u4SecSpec[13];
3214 struct {
3215 __le32 dlAddr;
3216 __le32 dlsize;
3217 __le32 seckeyidx;
3218 __le32 alignlen;
3219 __le32 sectype;
3220 __le32 dlmodecrctype;
3221 __le32 crc;
3222 __le32 reserved[6];
3223 } bin_info_spec;
3224 };
3225 } __packed;
3226
3227 static void btusb_mtk_wmt_recv(struct urb *urb)
3228 {
3229 struct hci_dev *hdev = urb->context;
3230 struct btusb_data *data = hci_get_drvdata(hdev);
3231 struct hci_event_hdr *hdr;
3232 struct sk_buff *skb;
3233 int err;
3234
3235 if (urb->status == 0 && urb->actual_length > 0) {
3236 hdev->stat.byte_rx += urb->actual_length;
3237
3238 /* WMT event shouldn't be fragmented and the size should be
3239 * less than HCI_WMT_MAX_EVENT_SIZE.
3240 */
3241 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
3242 if (!skb) {
3243 hdev->stat.err_rx++;
3244 return;
3245 }
3246
3247 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
3248 skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
3249
3250 hdr = (void *)skb->data;
3251 /* Fix up the vendor event id with 0xff for vendor specific
3252 * instead of 0xe4 so that event send via monitoring socket can
3253 * be parsed properly.
3254 */
3255 hdr->evt = 0xff;
3256
3257 /* When someone waits for the WMT event, the skb is being cloned
3258 * and being processed the events from there then.
3259 */
3260 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
3261 data->evt_skb = skb_clone(skb, GFP_ATOMIC);
3262 if (!data->evt_skb) {
3263 kfree_skb(skb);
3264 return;
3265 }
3266 }
3267
3268 err = hci_recv_frame(hdev, skb);
3269 if (err < 0) {
3270 kfree_skb(data->evt_skb);
3271 data->evt_skb = NULL;
3272 return;
3273 }
3274
3275 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
3276 &data->flags)) {
3277 /* Barrier to sync with other CPUs */
3278 smp_mb__after_atomic();
3279 wake_up_bit(&data->flags,
3280 BTUSB_TX_WAIT_VND_EVT);
3281 }
3282 return;
3283 } else if (urb->status == -ENOENT) {
3284 /* Avoid suspend failed when usb_kill_urb */
3285 return;
3286 }
3287
3288 usb_mark_last_busy(data->udev);
3289
3290 /* The URB complete handler is still called with urb->actual_length = 0
3291 * when the event is not available, so we should keep re-submitting
3292 * URB until WMT event returns, Also, It's necessary to wait some time
3293 * between the two consecutive control URBs to relax the target device
3294 * to generate the event. Otherwise, the WMT event cannot return from
3295 * the device successfully.
3296 */
3297 udelay(500);
3298
3299 usb_anchor_urb(urb, &data->ctrl_anchor);
3300 err = usb_submit_urb(urb, GFP_ATOMIC);
3301 if (err < 0) {
3302 /* -EPERM: urb is being killed;
3303 * -ENODEV: device got disconnected
3304 */
3305 if (err != -EPERM && err != -ENODEV)
3306 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
3307 urb, -err);
3308 usb_unanchor_urb(urb);
3309 }
3310 }
3311
3312 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
3313 {
3314 struct btusb_data *data = hci_get_drvdata(hdev);
3315 struct usb_ctrlrequest *dr;
3316 unsigned char *buf;
3317 int err, size = 64;
3318 unsigned int pipe;
3319 struct urb *urb;
3320
3321 urb = usb_alloc_urb(0, GFP_KERNEL);
3322 if (!urb)
3323 return -ENOMEM;
3324
3325 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
3326 if (!dr) {
3327 usb_free_urb(urb);
3328 return -ENOMEM;
3329 }
3330
3331 dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
3332 dr->bRequest = 1;
3333 dr->wIndex = cpu_to_le16(0);
3334 dr->wValue = cpu_to_le16(48);
3335 dr->wLength = cpu_to_le16(size);
3336
3337 buf = kmalloc(size, GFP_KERNEL);
3338 if (!buf) {
3339 kfree(dr);
3340 usb_free_urb(urb);
3341 return -ENOMEM;
3342 }
3343
3344 pipe = usb_rcvctrlpipe(data->udev, 0);
3345
3346 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
3347 buf, size, btusb_mtk_wmt_recv, hdev);
3348
3349 urb->transfer_flags |= URB_FREE_BUFFER;
3350
3351 usb_anchor_urb(urb, &data->ctrl_anchor);
3352 err = usb_submit_urb(urb, GFP_KERNEL);
3353 if (err < 0) {
3354 if (err != -EPERM && err != -ENODEV)
3355 bt_dev_err(hdev, "urb %p submission failed (%d)",
3356 urb, -err);
3357 usb_unanchor_urb(urb);
3358 }
3359
3360 usb_free_urb(urb);
3361
3362 return err;
3363 }
3364
3365 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
3366 struct btmtk_hci_wmt_params *wmt_params)
3367 {
3368 struct btusb_data *data = hci_get_drvdata(hdev);
3369 struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
3370 u32 hlen, status = BTMTK_WMT_INVALID;
3371 struct btmtk_hci_wmt_evt *wmt_evt;
3372 struct btmtk_hci_wmt_cmd wc;
3373 struct btmtk_wmt_hdr *hdr;
3374 int err;
3375
3376 /* Submit control IN URB on demand to process the WMT event */
3377 err = btusb_mtk_submit_wmt_recv_urb(hdev);
3378 if (err < 0)
3379 return err;
3380
3381 /* Send the WMT command and wait until the WMT event returns */
3382 hlen = sizeof(*hdr) + wmt_params->dlen;
3383 if (hlen > 255)
3384 return -EINVAL;
3385
3386 hdr = (struct btmtk_wmt_hdr *)&wc;
3387 hdr->dir = 1;
3388 hdr->op = wmt_params->op;
3389 hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
3390 hdr->flag = wmt_params->flag;
3391 memcpy(wc.data, wmt_params->data, wmt_params->dlen);
3392
3393 set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
3394
3395 err = __hci_cmd_send(hdev, 0xfc6f, hlen, &wc);
3396
3397 if (err < 0) {
3398 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
3399 return err;
3400 }
3401
3402 /* The vendor specific WMT commands are all answered by a vendor
3403 * specific event and will have the Command Status or Command
3404 * Complete as with usual HCI command flow control.
3405 *
3406 * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
3407 * state to be cleared. The driver specific event receive routine
3408 * will clear that state and with that indicate completion of the
3409 * WMT command.
3410 */
3411 err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
3412 TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
3413 if (err == -EINTR) {
3414 bt_dev_err(hdev, "Execution of wmt command interrupted");
3415 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
3416 return err;
3417 }
3418
3419 if (err) {
3420 bt_dev_err(hdev, "Execution of wmt command timed out");
3421 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
3422 return -ETIMEDOUT;
3423 }
3424
3425 /* Parse and handle the return WMT event */
3426 wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
3427 if (wmt_evt->whdr.op != hdr->op) {
3428 bt_dev_err(hdev, "Wrong op received %d expected %d",
3429 wmt_evt->whdr.op, hdr->op);
3430 err = -EIO;
3431 goto err_free_skb;
3432 }
3433
3434 switch (wmt_evt->whdr.op) {
3435 case BTMTK_WMT_SEMAPHORE:
3436 if (wmt_evt->whdr.flag == 2)
3437 status = BTMTK_WMT_PATCH_UNDONE;
3438 else
3439 status = BTMTK_WMT_PATCH_DONE;
3440 break;
3441 case BTMTK_WMT_FUNC_CTRL:
3442 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
3443 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
3444 status = BTMTK_WMT_ON_DONE;
3445 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
3446 status = BTMTK_WMT_ON_PROGRESS;
3447 else
3448 status = BTMTK_WMT_ON_UNDONE;
3449 break;
3450 case BTMTK_WMT_PATCH_DWNLD:
3451 if (wmt_evt->whdr.flag == 2)
3452 status = BTMTK_WMT_PATCH_DONE;
3453 else if (wmt_evt->whdr.flag == 1)
3454 status = BTMTK_WMT_PATCH_PROGRESS;
3455 else
3456 status = BTMTK_WMT_PATCH_UNDONE;
3457 break;
3458 }
3459
3460 if (wmt_params->status)
3461 *wmt_params->status = status;
3462
3463 err_free_skb:
3464 kfree_skb(data->evt_skb);
3465 data->evt_skb = NULL;
3466
3467 return err;
3468 }
3469
3470 static int btusb_mtk_setup_firmware_79xx(struct hci_dev *hdev, const char *fwname)
3471 {
3472 struct btmtk_hci_wmt_params wmt_params;
3473 struct btmtk_patch_header *patchhdr = NULL;
3474 struct btmtk_global_desc *globaldesc = NULL;
3475 struct btmtk_section_map *sectionmap;
3476 const struct firmware *fw;
3477 const u8 *fw_ptr;
3478 const u8 *fw_bin_ptr;
3479 size_t fw_size;
3480 int err, dlen, i, status;
3481 u8 flag, first_block, retry;
3482 u32 section_num, dl_size, section_offset;
3483 u8 cmd[64];
3484
3485 err = request_firmware(&fw, fwname, &hdev->dev);
3486 if (err < 0) {
3487 bt_dev_err(hdev, "Failed to load firmware file (%d)", err);
3488 return err;
3489 }
3490
3491 fw_ptr = fw->data;
3492 fw_bin_ptr = fw_ptr;
3493 fw_size = fw->size;
3494 patchhdr = (struct btmtk_patch_header *)fw_ptr;
3495 globaldesc = (struct btmtk_global_desc *)(fw_ptr + MTK_FW_ROM_PATCH_HEADER_SIZE);
3496 section_num = globaldesc->section_num;
3497
3498 for (i = 0; i < section_num; i++) {
3499 first_block = 1;
3500 fw_ptr = fw_bin_ptr;
3501 sectionmap = (struct btmtk_section_map *)(fw_ptr + MTK_FW_ROM_PATCH_HEADER_SIZE +
3502 MTK_FW_ROM_PATCH_GD_SIZE + MTK_FW_ROM_PATCH_SEC_MAP_SIZE * i);
3503
3504 section_offset = sectionmap->secoffset;
3505 dl_size = sectionmap->bin_info_spec.dlsize;
3506
3507 if (dl_size > 0) {
3508 retry = 20;
3509 while (retry > 0) {
3510 cmd[0] = 0; /* 0 means legacy dl mode. */
3511 memcpy(cmd + 1,
3512 fw_ptr + MTK_FW_ROM_PATCH_HEADER_SIZE +
3513 MTK_FW_ROM_PATCH_GD_SIZE + MTK_FW_ROM_PATCH_SEC_MAP_SIZE * i +
3514 MTK_SEC_MAP_COMMON_SIZE,
3515 MTK_SEC_MAP_NEED_SEND_SIZE + 1);
3516
3517 wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
3518 wmt_params.status = &status;
3519 wmt_params.flag = 0;
3520 wmt_params.dlen = MTK_SEC_MAP_NEED_SEND_SIZE + 1;
3521 wmt_params.data = &cmd;
3522
3523 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3524 if (err < 0) {
3525 bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
3526 err);
3527 goto err_release_fw;
3528 }
3529
3530 if (status == BTMTK_WMT_PATCH_UNDONE) {
3531 break;
3532 } else if (status == BTMTK_WMT_PATCH_PROGRESS) {
3533 msleep(100);
3534 retry--;
3535 } else if (status == BTMTK_WMT_PATCH_DONE) {
3536 goto next_section;
3537 } else {
3538 bt_dev_err(hdev, "Failed wmt patch dwnld status (%d)",
3539 status);
3540 goto err_release_fw;
3541 }
3542 }
3543
3544 fw_ptr += section_offset;
3545 wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
3546 wmt_params.status = NULL;
3547
3548 while (dl_size > 0) {
3549 dlen = min_t(int, 250, dl_size);
3550 if (first_block == 1) {
3551 flag = 1;
3552 first_block = 0;
3553 } else if (dl_size - dlen <= 0) {
3554 flag = 3;
3555 } else {
3556 flag = 2;
3557 }
3558
3559 wmt_params.flag = flag;
3560 wmt_params.dlen = dlen;
3561 wmt_params.data = fw_ptr;
3562
3563 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3564 if (err < 0) {
3565 bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
3566 err);
3567 goto err_release_fw;
3568 }
3569
3570 dl_size -= dlen;
3571 fw_ptr += dlen;
3572 }
3573 }
3574 next_section:
3575 continue;
3576 }
3577 /* Wait a few moments for firmware activation done */
3578 usleep_range(100000, 120000);
3579
3580 err_release_fw:
3581 release_firmware(fw);
3582
3583 return err;
3584 }
3585
3586 static int btusb_mtk_setup_firmware(struct hci_dev *hdev, const char *fwname)
3587 {
3588 struct btmtk_hci_wmt_params wmt_params;
3589 const struct firmware *fw;
3590 const u8 *fw_ptr;
3591 size_t fw_size;
3592 int err, dlen;
3593 u8 flag, param;
3594
3595 err = request_firmware(&fw, fwname, &hdev->dev);
3596 if (err < 0) {
3597 bt_dev_err(hdev, "Failed to load firmware file (%d)", err);
3598 return err;
3599 }
3600
3601 /* Power on data RAM the firmware relies on. */
3602 param = 1;
3603 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3604 wmt_params.flag = 3;
3605 wmt_params.dlen = sizeof(param);
3606 wmt_params.data = &param;
3607 wmt_params.status = NULL;
3608
3609 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3610 if (err < 0) {
3611 bt_dev_err(hdev, "Failed to power on data RAM (%d)", err);
3612 goto err_release_fw;
3613 }
3614
3615 fw_ptr = fw->data;
3616 fw_size = fw->size;
3617
3618 /* The size of patch header is 30 bytes, should be skip */
3619 if (fw_size < 30) {
3620 err = -EINVAL;
3621 goto err_release_fw;
3622 }
3623
3624 fw_size -= 30;
3625 fw_ptr += 30;
3626 flag = 1;
3627
3628 wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
3629 wmt_params.status = NULL;
3630
3631 while (fw_size > 0) {
3632 dlen = min_t(int, 250, fw_size);
3633
3634 /* Tell deivice the position in sequence */
3635 if (fw_size - dlen <= 0)
3636 flag = 3;
3637 else if (fw_size < fw->size - 30)
3638 flag = 2;
3639
3640 wmt_params.flag = flag;
3641 wmt_params.dlen = dlen;
3642 wmt_params.data = fw_ptr;
3643
3644 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3645 if (err < 0) {
3646 bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
3647 err);
3648 goto err_release_fw;
3649 }
3650
3651 fw_size -= dlen;
3652 fw_ptr += dlen;
3653 }
3654
3655 wmt_params.op = BTMTK_WMT_RST;
3656 wmt_params.flag = 4;
3657 wmt_params.dlen = 0;
3658 wmt_params.data = NULL;
3659 wmt_params.status = NULL;
3660
3661 /* Activate funciton the firmware providing to */
3662 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3663 if (err < 0) {
3664 bt_dev_err(hdev, "Failed to send wmt rst (%d)", err);
3665 goto err_release_fw;
3666 }
3667
3668 /* Wait a few moments for firmware activation done */
3669 usleep_range(10000, 12000);
3670
3671 err_release_fw:
3672 release_firmware(fw);
3673
3674 return err;
3675 }
3676
3677 static int btusb_mtk_func_query(struct hci_dev *hdev)
3678 {
3679 struct btmtk_hci_wmt_params wmt_params;
3680 int status, err;
3681 u8 param = 0;
3682
3683 /* Query whether the function is enabled */
3684 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3685 wmt_params.flag = 4;
3686 wmt_params.dlen = sizeof(param);
3687 wmt_params.data = &param;
3688 wmt_params.status = &status;
3689
3690 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3691 if (err < 0) {
3692 bt_dev_err(hdev, "Failed to query function status (%d)", err);
3693 return err;
3694 }
3695
3696 return status;
3697 }
3698
3699 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
3700 {
3701 int pipe, err, size = sizeof(u32);
3702 void *buf;
3703
3704 buf = kzalloc(size, GFP_KERNEL);
3705 if (!buf)
3706 return -ENOMEM;
3707
3708 pipe = usb_rcvctrlpipe(data->udev, 0);
3709 err = usb_control_msg(data->udev, pipe, 0x63,
3710 USB_TYPE_VENDOR | USB_DIR_IN,
3711 reg >> 16, reg & 0xffff,
3712 buf, size, USB_CTRL_SET_TIMEOUT);
3713 if (err < 0)
3714 goto err_free_buf;
3715
3716 *val = get_unaligned_le32(buf);
3717
3718 err_free_buf:
3719 kfree(buf);
3720
3721 return err;
3722 }
3723
3724 static int btusb_mtk_id_get(struct btusb_data *data, u32 reg, u32 *id)
3725 {
3726 return btusb_mtk_reg_read(data, reg, id);
3727 }
3728
3729 static int btusb_mtk_setup(struct hci_dev *hdev)
3730 {
3731 struct btusb_data *data = hci_get_drvdata(hdev);
3732 struct btmtk_hci_wmt_params wmt_params;
3733 ktime_t calltime, delta, rettime;
3734 struct btmtk_tci_sleep tci_sleep;
3735 unsigned long long duration;
3736 struct sk_buff *skb;
3737 const char *fwname;
3738 int err, status;
3739 u32 dev_id;
3740 char fw_bin_name[64];
3741 u32 fw_version;
3742 u8 param;
3743
3744 calltime = ktime_get();
3745
3746 err = btusb_mtk_id_get(data, 0x80000008, &dev_id);
3747 if (err < 0) {
3748 bt_dev_err(hdev, "Failed to get device id (%d)", err);
3749 return err;
3750 }
3751
3752 if (!dev_id) {
3753 err = btusb_mtk_id_get(data, 0x70010200, &dev_id);
3754 if (err < 0) {
3755 bt_dev_err(hdev, "Failed to get device id (%d)", err);
3756 return err;
3757 }
3758 err = btusb_mtk_id_get(data, 0x80021004, &fw_version);
3759 if (err < 0) {
3760 bt_dev_err(hdev, "Failed to get fw version (%d)", err);
3761 return err;
3762 }
3763 }
3764
3765 switch (dev_id) {
3766 case 0x7663:
3767 fwname = FIRMWARE_MT7663;
3768 break;
3769 case 0x7668:
3770 fwname = FIRMWARE_MT7668;
3771 break;
3772 case 0x7961:
3773 snprintf(fw_bin_name, sizeof(fw_bin_name),
3774 "mediatek/BT_RAM_CODE_MT%04x_1_%x_hdr.bin",
3775 dev_id & 0xffff, (fw_version & 0xff) + 1);
3776 err = btusb_mtk_setup_firmware_79xx(hdev, fw_bin_name);
3777
3778 /* Enable Bluetooth protocol */
3779 param = 1;
3780 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3781 wmt_params.flag = 0;
3782 wmt_params.dlen = sizeof(param);
3783 wmt_params.data = &param;
3784 wmt_params.status = NULL;
3785
3786 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3787 if (err < 0) {
3788 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3789 return err;
3790 }
3791 goto done;
3792 default:
3793 bt_dev_err(hdev, "Unsupported support hardware variant (%08x)",
3794 dev_id);
3795 return -ENODEV;
3796 }
3797
3798 /* Query whether the firmware is already download */
3799 wmt_params.op = BTMTK_WMT_SEMAPHORE;
3800 wmt_params.flag = 1;
3801 wmt_params.dlen = 0;
3802 wmt_params.data = NULL;
3803 wmt_params.status = &status;
3804
3805 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3806 if (err < 0) {
3807 bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
3808 return err;
3809 }
3810
3811 if (status == BTMTK_WMT_PATCH_DONE) {
3812 bt_dev_info(hdev, "firmware already downloaded");
3813 goto ignore_setup_fw;
3814 }
3815
3816 /* Setup a firmware which the device definitely requires */
3817 err = btusb_mtk_setup_firmware(hdev, fwname);
3818 if (err < 0)
3819 return err;
3820
3821 ignore_setup_fw:
3822 err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
3823 status < 0 || status != BTMTK_WMT_ON_PROGRESS,
3824 2000, 5000000);
3825 /* -ETIMEDOUT happens */
3826 if (err < 0)
3827 return err;
3828
3829 /* The other errors happen in btusb_mtk_func_query */
3830 if (status < 0)
3831 return status;
3832
3833 if (status == BTMTK_WMT_ON_DONE) {
3834 bt_dev_info(hdev, "function already on");
3835 goto ignore_func_on;
3836 }
3837
3838 /* Enable Bluetooth protocol */
3839 param = 1;
3840 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3841 wmt_params.flag = 0;
3842 wmt_params.dlen = sizeof(param);
3843 wmt_params.data = &param;
3844 wmt_params.status = NULL;
3845
3846 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3847 if (err < 0) {
3848 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3849 return err;
3850 }
3851
3852 ignore_func_on:
3853 /* Apply the low power environment setup */
3854 tci_sleep.mode = 0x5;
3855 tci_sleep.duration = cpu_to_le16(0x640);
3856 tci_sleep.host_duration = cpu_to_le16(0x640);
3857 tci_sleep.host_wakeup_pin = 0;
3858 tci_sleep.time_compensation = 0;
3859
3860 skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
3861 HCI_INIT_TIMEOUT);
3862 if (IS_ERR(skb)) {
3863 err = PTR_ERR(skb);
3864 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
3865 return err;
3866 }
3867 kfree_skb(skb);
3868
3869 done:
3870 rettime = ktime_get();
3871 delta = ktime_sub(rettime, calltime);
3872 duration = (unsigned long long)ktime_to_ns(delta) >> 10;
3873
3874 bt_dev_info(hdev, "Device setup in %llu usecs", duration);
3875
3876 return 0;
3877 }
3878
3879 static int btusb_mtk_shutdown(struct hci_dev *hdev)
3880 {
3881 struct btmtk_hci_wmt_params wmt_params;
3882 u8 param = 0;
3883 int err;
3884
3885 /* Disable the device */
3886 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3887 wmt_params.flag = 0;
3888 wmt_params.dlen = sizeof(param);
3889 wmt_params.data = &param;
3890 wmt_params.status = NULL;
3891
3892 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3893 if (err < 0) {
3894 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3895 return err;
3896 }
3897
3898 return 0;
3899 }
3900
3901 MODULE_FIRMWARE(FIRMWARE_MT7663);
3902 MODULE_FIRMWARE(FIRMWARE_MT7668);
3903
3904 #ifdef CONFIG_PM
3905 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
3906 static int marvell_config_oob_wake(struct hci_dev *hdev)
3907 {
3908 struct sk_buff *skb;
3909 struct btusb_data *data = hci_get_drvdata(hdev);
3910 struct device *dev = &data->udev->dev;
3911 u16 pin, gap, opcode;
3912 int ret;
3913 u8 cmd[5];
3914
3915 /* Move on if no wakeup pin specified */
3916 if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
3917 of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
3918 return 0;
3919
3920 /* Vendor specific command to configure a GPIO as wake-up pin */
3921 opcode = hci_opcode_pack(0x3F, 0x59);
3922 cmd[0] = opcode & 0xFF;
3923 cmd[1] = opcode >> 8;
3924 cmd[2] = 2; /* length of parameters that follow */
3925 cmd[3] = pin;
3926 cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
3927
3928 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
3929 if (!skb) {
3930 bt_dev_err(hdev, "%s: No memory", __func__);
3931 return -ENOMEM;
3932 }
3933
3934 skb_put_data(skb, cmd, sizeof(cmd));
3935 hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
3936
3937 ret = btusb_send_frame(hdev, skb);
3938 if (ret) {
3939 bt_dev_err(hdev, "%s: configuration failed", __func__);
3940 kfree_skb(skb);
3941 return ret;
3942 }
3943
3944 return 0;
3945 }
3946 #endif
3947
3948 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
3949 const bdaddr_t *bdaddr)
3950 {
3951 struct sk_buff *skb;
3952 u8 buf[8];
3953 long ret;
3954
3955 buf[0] = 0xfe;
3956 buf[1] = sizeof(bdaddr_t);
3957 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
3958
3959 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3960 if (IS_ERR(skb)) {
3961 ret = PTR_ERR(skb);
3962 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
3963 ret);
3964 return ret;
3965 }
3966 kfree_skb(skb);
3967
3968 return 0;
3969 }
3970
3971 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3972 const bdaddr_t *bdaddr)
3973 {
3974 struct sk_buff *skb;
3975 u8 buf[10];
3976 long ret;
3977
3978 buf[0] = 0x01;
3979 buf[1] = 0x01;
3980 buf[2] = 0x00;
3981 buf[3] = sizeof(bdaddr_t);
3982 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3983
3984 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3985 if (IS_ERR(skb)) {
3986 ret = PTR_ERR(skb);
3987 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3988 return ret;
3989 }
3990 kfree_skb(skb);
3991
3992 return 0;
3993 }
3994
3995 static int btusb_set_bdaddr_wcn6855(struct hci_dev *hdev,
3996 const bdaddr_t *bdaddr)
3997 {
3998 struct sk_buff *skb;
3999 u8 buf[6];
4000 long ret;
4001
4002 memcpy(buf, bdaddr, sizeof(bdaddr_t));
4003
4004 skb = __hci_cmd_sync_ev(hdev, 0xfc14, sizeof(buf), buf,
4005 HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
4006 if (IS_ERR(skb)) {
4007 ret = PTR_ERR(skb);
4008 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
4009 return ret;
4010 }
4011 kfree_skb(skb);
4012
4013 return 0;
4014 }
4015
4016 #define QCA_DFU_PACKET_LEN 4096
4017
4018 #define QCA_GET_TARGET_VERSION 0x09
4019 #define QCA_CHECK_STATUS 0x05
4020 #define QCA_DFU_DOWNLOAD 0x01
4021
4022 #define QCA_SYSCFG_UPDATED 0x40
4023 #define QCA_PATCH_UPDATED 0x80
4024 #define QCA_DFU_TIMEOUT 3000
4025 #define QCA_FLAG_MULTI_NVM 0x80
4026
4027 struct qca_version {
4028 __le32 rom_version;
4029 __le32 patch_version;
4030 __le32 ram_version;
4031 __le16 board_id;
4032 __le16 flag;
4033 __u8 reserved[4];
4034 } __packed;
4035
4036 struct qca_rampatch_version {
4037 __le16 rom_version_high;
4038 __le16 rom_version_low;
4039 __le16 patch_version;
4040 } __packed;
4041
4042 struct qca_device_info {
4043 u32 rom_version;
4044 u8 rampatch_hdr; /* length of header in rampatch */
4045 u8 nvm_hdr; /* length of header in NVM */
4046 u8 ver_offset; /* offset of version structure in rampatch */
4047 };
4048
4049 static const struct qca_device_info qca_devices_table[] = {
4050 { 0x00000100, 20, 4, 8 }, /* Rome 1.0 */
4051 { 0x00000101, 20, 4, 8 }, /* Rome 1.1 */
4052 { 0x00000200, 28, 4, 16 }, /* Rome 2.0 */
4053 { 0x00000201, 28, 4, 16 }, /* Rome 2.1 */
4054 { 0x00000300, 28, 4, 16 }, /* Rome 3.0 */
4055 { 0x00000302, 28, 4, 16 }, /* Rome 3.2 */
4056 { 0x00130100, 40, 4, 16 }, /* WCN6855 1.0 */
4057 { 0x00130200, 40, 4, 16 }, /* WCN6855 2.0 */
4058 };
4059
4060 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
4061 void *data, u16 size)
4062 {
4063 int pipe, err;
4064 u8 *buf;
4065
4066 buf = kmalloc(size, GFP_KERNEL);
4067 if (!buf)
4068 return -ENOMEM;
4069
4070 /* Found some of USB hosts have IOT issues with ours so that we should
4071 * not wait until HCI layer is ready.
4072 */
4073 pipe = usb_rcvctrlpipe(udev, 0);
4074 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
4075 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
4076 if (err < 0) {
4077 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
4078 goto done;
4079 }
4080
4081 memcpy(data, buf, size);
4082
4083 done:
4084 kfree(buf);
4085
4086 return err;
4087 }
4088
4089 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
4090 const struct firmware *firmware,
4091 size_t hdr_size)
4092 {
4093 struct btusb_data *btdata = hci_get_drvdata(hdev);
4094 struct usb_device *udev = btdata->udev;
4095 size_t count, size, sent = 0;
4096 int pipe, len, err;
4097 u8 *buf;
4098
4099 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
4100 if (!buf)
4101 return -ENOMEM;
4102
4103 count = firmware->size;
4104
4105 size = min_t(size_t, count, hdr_size);
4106 memcpy(buf, firmware->data, size);
4107
4108 /* USB patches should go down to controller through USB path
4109 * because binary format fits to go down through USB channel.
4110 * USB control path is for patching headers and USB bulk is for
4111 * patch body.
4112 */
4113 pipe = usb_sndctrlpipe(udev, 0);
4114 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
4115 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
4116 if (err < 0) {
4117 bt_dev_err(hdev, "Failed to send headers (%d)", err);
4118 goto done;
4119 }
4120
4121 sent += size;
4122 count -= size;
4123
4124 while (count) {
4125 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
4126
4127 memcpy(buf, firmware->data + sent, size);
4128
4129 pipe = usb_sndbulkpipe(udev, 0x02);
4130 err = usb_bulk_msg(udev, pipe, buf, size, &len,
4131 QCA_DFU_TIMEOUT);
4132 if (err < 0) {
4133 bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
4134 sent, firmware->size, err);
4135 break;
4136 }
4137
4138 if (size != len) {
4139 bt_dev_err(hdev, "Failed to get bulk buffer");
4140 err = -EILSEQ;
4141 break;
4142 }
4143
4144 sent += size;
4145 count -= size;
4146 }
4147
4148 done:
4149 kfree(buf);
4150 return err;
4151 }
4152
4153 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
4154 struct qca_version *ver,
4155 const struct qca_device_info *info)
4156 {
4157 struct qca_rampatch_version *rver;
4158 const struct firmware *fw;
4159 u32 ver_rom, ver_patch, rver_rom;
4160 u16 rver_rom_low, rver_rom_high, rver_patch;
4161 char fwname[64];
4162 int err;
4163
4164 ver_rom = le32_to_cpu(ver->rom_version);
4165 ver_patch = le32_to_cpu(ver->patch_version);
4166
4167 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
4168
4169 err = request_firmware(&fw, fwname, &hdev->dev);
4170 if (err) {
4171 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
4172 fwname, err);
4173 return err;
4174 }
4175
4176 bt_dev_info(hdev, "using rampatch file: %s", fwname);
4177
4178 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
4179 rver_rom_low = le16_to_cpu(rver->rom_version_low);
4180 rver_patch = le16_to_cpu(rver->patch_version);
4181
4182 if (ver_rom & ~0xffffU) {
4183 rver_rom_high = le16_to_cpu(rver->rom_version_high);
4184 rver_rom = le32_to_cpu(rver_rom_high << 16 | rver_rom_low);
4185 } else {
4186 rver_rom = rver_rom_low;
4187 }
4188
4189 bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
4190 "firmware rome 0x%x build 0x%x",
4191 rver_rom, rver_patch, ver_rom, ver_patch);
4192
4193 if (rver_rom != ver_rom || rver_patch <= ver_patch) {
4194 bt_dev_err(hdev, "rampatch file version did not match with firmware");
4195 err = -EINVAL;
4196 goto done;
4197 }
4198
4199 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
4200
4201 done:
4202 release_firmware(fw);
4203
4204 return err;
4205 }
4206
4207 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
4208 struct qca_version *ver,
4209 const struct qca_device_info *info)
4210 {
4211 const struct firmware *fw;
4212 char fwname[64];
4213 int err;
4214
4215 if (((ver->flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) {
4216 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x_%04x.bin",
4217 le32_to_cpu(ver->rom_version),
4218 le16_to_cpu(ver->board_id));
4219 } else {
4220 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
4221 le32_to_cpu(ver->rom_version));
4222 }
4223
4224 err = request_firmware(&fw, fwname, &hdev->dev);
4225 if (err) {
4226 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
4227 fwname, err);
4228 return err;
4229 }
4230
4231 bt_dev_info(hdev, "using NVM file: %s", fwname);
4232
4233 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
4234
4235 release_firmware(fw);
4236
4237 return err;
4238 }
4239
4240 /* identify the ROM version and check whether patches are needed */
4241 static bool btusb_qca_need_patch(struct usb_device *udev)
4242 {
4243 struct qca_version ver;
4244
4245 if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
4246 sizeof(ver)) < 0)
4247 return false;
4248 /* only low ROM versions need patches */
4249 return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
4250 }
4251
4252 static int btusb_setup_qca(struct hci_dev *hdev)
4253 {
4254 struct btusb_data *btdata = hci_get_drvdata(hdev);
4255 struct usb_device *udev = btdata->udev;
4256 const struct qca_device_info *info = NULL;
4257 struct qca_version ver;
4258 u32 ver_rom;
4259 u8 status;
4260 int i, err;
4261
4262 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
4263 sizeof(ver));
4264 if (err < 0)
4265 return err;
4266
4267 ver_rom = le32_to_cpu(ver.rom_version);
4268
4269 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
4270 if (ver_rom == qca_devices_table[i].rom_version)
4271 info = &qca_devices_table[i];
4272 }
4273 if (!info) {
4274 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
4275 return -ENODEV;
4276 }
4277
4278 err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
4279 sizeof(status));
4280 if (err < 0)
4281 return err;
4282
4283 if (!(status & QCA_PATCH_UPDATED)) {
4284 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
4285 if (err < 0)
4286 return err;
4287 }
4288
4289 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
4290 sizeof(ver));
4291 if (err < 0)
4292 return err;
4293
4294 if (!(status & QCA_SYSCFG_UPDATED)) {
4295 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
4296 if (err < 0)
4297 return err;
4298 }
4299
4300 return 0;
4301 }
4302
4303 static inline int __set_diag_interface(struct hci_dev *hdev)
4304 {
4305 struct btusb_data *data = hci_get_drvdata(hdev);
4306 struct usb_interface *intf = data->diag;
4307 int i;
4308
4309 if (!data->diag)
4310 return -ENODEV;
4311
4312 data->diag_tx_ep = NULL;
4313 data->diag_rx_ep = NULL;
4314
4315 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
4316 struct usb_endpoint_descriptor *ep_desc;
4317
4318 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
4319
4320 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
4321 data->diag_tx_ep = ep_desc;
4322 continue;
4323 }
4324
4325 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
4326 data->diag_rx_ep = ep_desc;
4327 continue;
4328 }
4329 }
4330
4331 if (!data->diag_tx_ep || !data->diag_rx_ep) {
4332 bt_dev_err(hdev, "invalid diagnostic descriptors");
4333 return -ENODEV;
4334 }
4335
4336 return 0;
4337 }
4338
4339 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
4340 {
4341 struct btusb_data *data = hci_get_drvdata(hdev);
4342 struct sk_buff *skb;
4343 struct urb *urb;
4344 unsigned int pipe;
4345
4346 if (!data->diag_tx_ep)
4347 return ERR_PTR(-ENODEV);
4348
4349 urb = usb_alloc_urb(0, GFP_KERNEL);
4350 if (!urb)
4351 return ERR_PTR(-ENOMEM);
4352
4353 skb = bt_skb_alloc(2, GFP_KERNEL);
4354 if (!skb) {
4355 usb_free_urb(urb);
4356 return ERR_PTR(-ENOMEM);
4357 }
4358
4359 skb_put_u8(skb, 0xf0);
4360 skb_put_u8(skb, enable);
4361
4362 pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
4363
4364 usb_fill_bulk_urb(urb, data->udev, pipe,
4365 skb->data, skb->len, btusb_tx_complete, skb);
4366
4367 skb->dev = (void *)hdev;
4368
4369 return urb;
4370 }
4371
4372 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
4373 {
4374 struct btusb_data *data = hci_get_drvdata(hdev);
4375 struct urb *urb;
4376
4377 if (!data->diag)
4378 return -ENODEV;
4379
4380 if (!test_bit(HCI_RUNNING, &hdev->flags))
4381 return -ENETDOWN;
4382
4383 urb = alloc_diag_urb(hdev, enable);
4384 if (IS_ERR(urb))
4385 return PTR_ERR(urb);
4386
4387 return submit_or_queue_tx_urb(hdev, urb);
4388 }
4389
4390 #ifdef CONFIG_PM
4391 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
4392 {
4393 struct btusb_data *data = priv;
4394
4395 pm_wakeup_event(&data->udev->dev, 0);
4396 pm_system_wakeup();
4397
4398 /* Disable only if not already disabled (keep it balanced) */
4399 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4400 disable_irq_nosync(irq);
4401 disable_irq_wake(irq);
4402 }
4403 return IRQ_HANDLED;
4404 }
4405
4406 static const struct of_device_id btusb_match_table[] = {
4407 { .compatible = "usb1286,204e" },
4408 { .compatible = "usbcf3,e300" }, /* QCA6174A */
4409 { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
4410 { }
4411 };
4412 MODULE_DEVICE_TABLE(of, btusb_match_table);
4413
4414 /* Use an oob wakeup pin? */
4415 static int btusb_config_oob_wake(struct hci_dev *hdev)
4416 {
4417 struct btusb_data *data = hci_get_drvdata(hdev);
4418 struct device *dev = &data->udev->dev;
4419 int irq, ret;
4420
4421 clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4422
4423 if (!of_match_device(btusb_match_table, dev))
4424 return 0;
4425
4426 /* Move on if no IRQ specified */
4427 irq = of_irq_get_byname(dev->of_node, "wakeup");
4428 if (irq <= 0) {
4429 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
4430 return 0;
4431 }
4432
4433 irq_set_status_flags(irq, IRQ_NOAUTOEN);
4434 ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
4435 0, "OOB Wake-on-BT", data);
4436 if (ret) {
4437 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
4438 return ret;
4439 }
4440
4441 ret = device_init_wakeup(dev, true);
4442 if (ret) {
4443 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
4444 return ret;
4445 }
4446
4447 data->oob_wake_irq = irq;
4448 bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
4449 return 0;
4450 }
4451 #endif
4452
4453 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
4454 {
4455 if (dmi_check_system(btusb_needs_reset_resume_table))
4456 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
4457 }
4458
4459 static bool btusb_prevent_wake(struct hci_dev *hdev)
4460 {
4461 struct btusb_data *data = hci_get_drvdata(hdev);
4462
4463 if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
4464 return true;
4465
4466 return !device_may_wakeup(&data->udev->dev);
4467 }
4468
4469 static int btusb_shutdown_qca(struct hci_dev *hdev)
4470 {
4471 struct sk_buff *skb;
4472
4473 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
4474 if (IS_ERR(skb)) {
4475 bt_dev_err(hdev, "HCI reset during shutdown failed");
4476 return PTR_ERR(skb);
4477 }
4478 kfree_skb(skb);
4479
4480 return 0;
4481 }
4482
4483 static int btusb_probe(struct usb_interface *intf,
4484 const struct usb_device_id *id)
4485 {
4486 struct usb_endpoint_descriptor *ep_desc;
4487 struct gpio_desc *reset_gpio;
4488 struct btusb_data *data;
4489 struct hci_dev *hdev;
4490 unsigned ifnum_base;
4491 int i, err;
4492
4493 BT_DBG("intf %p id %p", intf, id);
4494
4495 /* interface numbers are hardcoded in the spec */
4496 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
4497 if (!(id->driver_info & BTUSB_IFNUM_2))
4498 return -ENODEV;
4499 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
4500 return -ENODEV;
4501 }
4502
4503 ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
4504
4505 if (!id->driver_info) {
4506 const struct usb_device_id *match;
4507
4508 match = usb_match_id(intf, blacklist_table);
4509 if (match)
4510 id = match;
4511 }
4512
4513 if (id->driver_info == BTUSB_IGNORE)
4514 return -ENODEV;
4515
4516 if (id->driver_info & BTUSB_ATH3012) {
4517 struct usb_device *udev = interface_to_usbdev(intf);
4518
4519 /* Old firmware would otherwise let ath3k driver load
4520 * patch and sysconfig files
4521 */
4522 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
4523 !btusb_qca_need_patch(udev))
4524 return -ENODEV;
4525 }
4526
4527 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
4528 if (!data)
4529 return -ENOMEM;
4530
4531 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
4532 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
4533
4534 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
4535 data->intr_ep = ep_desc;
4536 continue;
4537 }
4538
4539 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
4540 data->bulk_tx_ep = ep_desc;
4541 continue;
4542 }
4543
4544 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
4545 data->bulk_rx_ep = ep_desc;
4546 continue;
4547 }
4548 }
4549
4550 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
4551 return -ENODEV;
4552
4553 if (id->driver_info & BTUSB_AMP) {
4554 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
4555 data->cmdreq = 0x2b;
4556 } else {
4557 data->cmdreq_type = USB_TYPE_CLASS;
4558 data->cmdreq = 0x00;
4559 }
4560
4561 data->udev = interface_to_usbdev(intf);
4562 data->intf = intf;
4563
4564 INIT_WORK(&data->work, btusb_work);
4565 INIT_WORK(&data->waker, btusb_waker);
4566 init_usb_anchor(&data->deferred);
4567 init_usb_anchor(&data->tx_anchor);
4568 spin_lock_init(&data->txlock);
4569
4570 init_usb_anchor(&data->intr_anchor);
4571 init_usb_anchor(&data->bulk_anchor);
4572 init_usb_anchor(&data->isoc_anchor);
4573 init_usb_anchor(&data->diag_anchor);
4574 init_usb_anchor(&data->ctrl_anchor);
4575 spin_lock_init(&data->rxlock);
4576
4577 if (id->driver_info & BTUSB_INTEL_NEW) {
4578 data->recv_event = btusb_recv_event_intel;
4579 data->recv_bulk = btusb_recv_bulk_intel;
4580 set_bit(BTUSB_BOOTLOADER, &data->flags);
4581 } else {
4582 data->recv_event = hci_recv_frame;
4583 data->recv_bulk = btusb_recv_bulk;
4584 }
4585
4586 hdev = hci_alloc_dev();
4587 if (!hdev)
4588 return -ENOMEM;
4589
4590 hdev->bus = HCI_USB;
4591 hci_set_drvdata(hdev, data);
4592
4593 if (id->driver_info & BTUSB_AMP)
4594 hdev->dev_type = HCI_AMP;
4595 else
4596 hdev->dev_type = HCI_PRIMARY;
4597
4598 data->hdev = hdev;
4599
4600 SET_HCIDEV_DEV(hdev, &intf->dev);
4601
4602 reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
4603 GPIOD_OUT_LOW);
4604 if (IS_ERR(reset_gpio)) {
4605 err = PTR_ERR(reset_gpio);
4606 goto out_free_dev;
4607 } else if (reset_gpio) {
4608 data->reset_gpio = reset_gpio;
4609 }
4610
4611 hdev->open = btusb_open;
4612 hdev->close = btusb_close;
4613 hdev->flush = btusb_flush;
4614 hdev->send = btusb_send_frame;
4615 hdev->notify = btusb_notify;
4616 hdev->prevent_wake = btusb_prevent_wake;
4617
4618 #ifdef CONFIG_PM
4619 err = btusb_config_oob_wake(hdev);
4620 if (err)
4621 goto out_free_dev;
4622
4623 /* Marvell devices may need a specific chip configuration */
4624 if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
4625 err = marvell_config_oob_wake(hdev);
4626 if (err)
4627 goto out_free_dev;
4628 }
4629 #endif
4630 if (id->driver_info & BTUSB_CW6622)
4631 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
4632
4633 if (id->driver_info & BTUSB_BCM2045)
4634 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
4635
4636 if (id->driver_info & BTUSB_BCM92035)
4637 hdev->setup = btusb_setup_bcm92035;
4638
4639 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
4640 (id->driver_info & BTUSB_BCM_PATCHRAM)) {
4641 hdev->manufacturer = 15;
4642 hdev->setup = btbcm_setup_patchram;
4643 hdev->set_diag = btusb_bcm_set_diag;
4644 hdev->set_bdaddr = btbcm_set_bdaddr;
4645
4646 /* Broadcom LM_DIAG Interface numbers are hardcoded */
4647 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4648 }
4649
4650 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
4651 (id->driver_info & BTUSB_BCM_APPLE)) {
4652 hdev->manufacturer = 15;
4653 hdev->setup = btbcm_setup_apple;
4654 hdev->set_diag = btusb_bcm_set_diag;
4655
4656 /* Broadcom LM_DIAG Interface numbers are hardcoded */
4657 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4658 }
4659
4660 if (id->driver_info & BTUSB_INTEL) {
4661 hdev->manufacturer = 2;
4662 hdev->setup = btusb_setup_intel;
4663 hdev->shutdown = btusb_shutdown_intel;
4664 hdev->set_diag = btintel_set_diag_mfg;
4665 hdev->set_bdaddr = btintel_set_bdaddr;
4666 hdev->cmd_timeout = btusb_intel_cmd_timeout;
4667 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4668 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4669 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
4670 }
4671
4672 if (id->driver_info & BTUSB_INTEL_NEW) {
4673 hdev->manufacturer = 2;
4674 hdev->send = btusb_send_frame_intel;
4675 hdev->setup = btusb_setup_intel_new;
4676 hdev->shutdown = btusb_shutdown_intel_new;
4677 hdev->hw_error = btintel_hw_error;
4678 hdev->set_diag = btintel_set_diag;
4679 hdev->set_bdaddr = btintel_set_bdaddr;
4680 hdev->cmd_timeout = btusb_intel_cmd_timeout;
4681 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4682 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4683 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
4684 }
4685
4686 if (id->driver_info & BTUSB_INTEL_NEWGEN) {
4687 hdev->manufacturer = 2;
4688 hdev->send = btusb_send_frame_intel;
4689 hdev->setup = btusb_setup_intel_newgen;
4690 hdev->shutdown = btusb_shutdown_intel_new;
4691 hdev->hw_error = btintel_hw_error;
4692 hdev->set_diag = btintel_set_diag;
4693 hdev->set_bdaddr = btintel_set_bdaddr;
4694 hdev->cmd_timeout = btusb_intel_cmd_timeout;
4695 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4696 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4697 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
4698
4699 data->recv_event = btusb_recv_event_intel;
4700 data->recv_bulk = btusb_recv_bulk_intel;
4701 set_bit(BTUSB_BOOTLOADER, &data->flags);
4702 }
4703
4704 if (id->driver_info & BTUSB_MARVELL)
4705 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
4706
4707 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) &&
4708 (id->driver_info & BTUSB_MEDIATEK)) {
4709 hdev->setup = btusb_mtk_setup;
4710 hdev->shutdown = btusb_mtk_shutdown;
4711 hdev->manufacturer = 70;
4712 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
4713 }
4714
4715 if (id->driver_info & BTUSB_SWAVE) {
4716 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
4717 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
4718 }
4719
4720 if (id->driver_info & BTUSB_INTEL_BOOT) {
4721 hdev->manufacturer = 2;
4722 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4723 }
4724
4725 if (id->driver_info & BTUSB_ATH3012) {
4726 data->setup_on_usb = btusb_setup_qca;
4727 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4728 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4729 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4730 }
4731
4732 if (id->driver_info & BTUSB_QCA_ROME) {
4733 data->setup_on_usb = btusb_setup_qca;
4734 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4735 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4736 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4737 btusb_check_needs_reset_resume(intf);
4738 }
4739
4740 if (id->driver_info & BTUSB_QCA_WCN6855) {
4741 data->setup_on_usb = btusb_setup_qca;
4742 hdev->shutdown = btusb_shutdown_qca;
4743 hdev->set_bdaddr = btusb_set_bdaddr_wcn6855;
4744 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4745 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4746 }
4747
4748 if (id->driver_info & BTUSB_AMP) {
4749 /* AMP controllers do not support SCO packets */
4750 data->isoc = NULL;
4751 } else {
4752 /* Interface orders are hardcoded in the specification */
4753 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
4754 data->isoc_ifnum = ifnum_base + 1;
4755 }
4756
4757 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) &&
4758 (id->driver_info & BTUSB_REALTEK)) {
4759 hdev->setup = btrtl_setup_realtek;
4760 hdev->shutdown = btrtl_shutdown_realtek;
4761 hdev->cmd_timeout = btusb_rtl_cmd_timeout;
4762
4763 /* Realtek devices lose their updated firmware over global
4764 * suspend that means host doesn't send SET_FEATURE
4765 * (DEVICE_REMOTE_WAKEUP)
4766 */
4767 set_bit(BTUSB_WAKEUP_DISABLE, &data->flags);
4768 }
4769
4770 if (!reset)
4771 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4772
4773 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
4774 if (!disable_scofix)
4775 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
4776 }
4777
4778 if (id->driver_info & BTUSB_BROKEN_ISOC)
4779 data->isoc = NULL;
4780
4781 if (id->driver_info & BTUSB_WIDEBAND_SPEECH)
4782 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
4783
4784 if (id->driver_info & BTUSB_VALID_LE_STATES)
4785 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
4786
4787 if (id->driver_info & BTUSB_DIGIANSWER) {
4788 data->cmdreq_type = USB_TYPE_VENDOR;
4789 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4790 }
4791
4792 if (id->driver_info & BTUSB_CSR) {
4793 struct usb_device *udev = data->udev;
4794 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
4795
4796 /* Old firmware would otherwise execute USB reset */
4797 if (bcdDevice < 0x117)
4798 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4799
4800 /* This must be set first in case we disable it for fakes */
4801 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4802
4803 /* Fake CSR devices with broken commands */
4804 if (le16_to_cpu(udev->descriptor.idVendor) == 0x0a12 &&
4805 le16_to_cpu(udev->descriptor.idProduct) == 0x0001)
4806 hdev->setup = btusb_setup_csr;
4807 }
4808
4809 if (id->driver_info & BTUSB_SNIFFER) {
4810 struct usb_device *udev = data->udev;
4811
4812 /* New sniffer firmware has crippled HCI interface */
4813 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
4814 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4815 }
4816
4817 if (id->driver_info & BTUSB_INTEL_BOOT) {
4818 /* A bug in the bootloader causes that interrupt interface is
4819 * only enabled after receiving SetInterface(0, AltSetting=0).
4820 */
4821 err = usb_set_interface(data->udev, 0, 0);
4822 if (err < 0) {
4823 BT_ERR("failed to set interface 0, alt 0 %d", err);
4824 goto out_free_dev;
4825 }
4826 }
4827
4828 if (data->isoc) {
4829 err = usb_driver_claim_interface(&btusb_driver,
4830 data->isoc, data);
4831 if (err < 0)
4832 goto out_free_dev;
4833 }
4834
4835 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) {
4836 if (!usb_driver_claim_interface(&btusb_driver,
4837 data->diag, data))
4838 __set_diag_interface(hdev);
4839 else
4840 data->diag = NULL;
4841 }
4842
4843 if (!enable_autosuspend)
4844 usb_disable_autosuspend(data->udev);
4845
4846 err = hci_register_dev(hdev);
4847 if (err < 0)
4848 goto out_free_dev;
4849
4850 usb_set_intfdata(intf, data);
4851
4852 return 0;
4853
4854 out_free_dev:
4855 if (data->reset_gpio)
4856 gpiod_put(data->reset_gpio);
4857 hci_free_dev(hdev);
4858 return err;
4859 }
4860
4861 static void btusb_disconnect(struct usb_interface *intf)
4862 {
4863 struct btusb_data *data = usb_get_intfdata(intf);
4864 struct hci_dev *hdev;
4865
4866 BT_DBG("intf %p", intf);
4867
4868 if (!data)
4869 return;
4870
4871 hdev = data->hdev;
4872 usb_set_intfdata(data->intf, NULL);
4873
4874 if (data->isoc)
4875 usb_set_intfdata(data->isoc, NULL);
4876
4877 if (data->diag)
4878 usb_set_intfdata(data->diag, NULL);
4879
4880 hci_unregister_dev(hdev);
4881
4882 if (intf == data->intf) {
4883 if (data->isoc)
4884 usb_driver_release_interface(&btusb_driver, data->isoc);
4885 if (data->diag)
4886 usb_driver_release_interface(&btusb_driver, data->diag);
4887 } else if (intf == data->isoc) {
4888 if (data->diag)
4889 usb_driver_release_interface(&btusb_driver, data->diag);
4890 usb_driver_release_interface(&btusb_driver, data->intf);
4891 } else if (intf == data->diag) {
4892 usb_driver_release_interface(&btusb_driver, data->intf);
4893 if (data->isoc)
4894 usb_driver_release_interface(&btusb_driver, data->isoc);
4895 }
4896
4897 if (data->oob_wake_irq)
4898 device_init_wakeup(&data->udev->dev, false);
4899
4900 if (data->reset_gpio)
4901 gpiod_put(data->reset_gpio);
4902
4903 hci_free_dev(hdev);
4904
4905 if (!enable_autosuspend)
4906 usb_enable_autosuspend(data->udev);
4907 }
4908
4909 #ifdef CONFIG_PM
4910 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
4911 {
4912 struct btusb_data *data = usb_get_intfdata(intf);
4913
4914 BT_DBG("intf %p", intf);
4915
4916 if (data->suspend_count++)
4917 return 0;
4918
4919 spin_lock_irq(&data->txlock);
4920 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
4921 set_bit(BTUSB_SUSPENDING, &data->flags);
4922 spin_unlock_irq(&data->txlock);
4923 } else {
4924 spin_unlock_irq(&data->txlock);
4925 data->suspend_count--;
4926 return -EBUSY;
4927 }
4928
4929 cancel_work_sync(&data->work);
4930
4931 btusb_stop_traffic(data);
4932 usb_kill_anchored_urbs(&data->tx_anchor);
4933
4934 if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
4935 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4936 enable_irq_wake(data->oob_wake_irq);
4937 enable_irq(data->oob_wake_irq);
4938 }
4939
4940 /* For global suspend, Realtek devices lose the loaded fw
4941 * in them. But for autosuspend, firmware should remain.
4942 * Actually, it depends on whether the usb host sends
4943 * set feature (enable wakeup) or not.
4944 */
4945 if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags)) {
4946 if (PMSG_IS_AUTO(message) &&
4947 device_can_wakeup(&data->udev->dev))
4948 data->udev->do_remote_wakeup = 1;
4949 else if (!PMSG_IS_AUTO(message))
4950 data->udev->reset_resume = 1;
4951 }
4952
4953 return 0;
4954 }
4955
4956 static void play_deferred(struct btusb_data *data)
4957 {
4958 struct urb *urb;
4959 int err;
4960
4961 while ((urb = usb_get_from_anchor(&data->deferred))) {
4962 usb_anchor_urb(urb, &data->tx_anchor);
4963
4964 err = usb_submit_urb(urb, GFP_ATOMIC);
4965 if (err < 0) {
4966 if (err != -EPERM && err != -ENODEV)
4967 BT_ERR("%s urb %p submission failed (%d)",
4968 data->hdev->name, urb, -err);
4969 kfree(urb->setup_packet);
4970 usb_unanchor_urb(urb);
4971 usb_free_urb(urb);
4972 break;
4973 }
4974
4975 data->tx_in_flight++;
4976 usb_free_urb(urb);
4977 }
4978
4979 /* Cleanup the rest deferred urbs. */
4980 while ((urb = usb_get_from_anchor(&data->deferred))) {
4981 kfree(urb->setup_packet);
4982 usb_free_urb(urb);
4983 }
4984 }
4985
4986 static int btusb_resume(struct usb_interface *intf)
4987 {
4988 struct btusb_data *data = usb_get_intfdata(intf);
4989 struct hci_dev *hdev = data->hdev;
4990 int err = 0;
4991
4992 BT_DBG("intf %p", intf);
4993
4994 if (--data->suspend_count)
4995 return 0;
4996
4997 /* Disable only if not already disabled (keep it balanced) */
4998 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4999 disable_irq(data->oob_wake_irq);
5000 disable_irq_wake(data->oob_wake_irq);
5001 }
5002
5003 if (!test_bit(HCI_RUNNING, &hdev->flags))
5004 goto done;
5005
5006 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
5007 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
5008 if (err < 0) {
5009 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
5010 goto failed;
5011 }
5012 }
5013
5014 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
5015 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
5016 if (err < 0) {
5017 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
5018 goto failed;
5019 }
5020
5021 btusb_submit_bulk_urb(hdev, GFP_NOIO);
5022 }
5023
5024 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
5025 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
5026 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
5027 else
5028 btusb_submit_isoc_urb(hdev, GFP_NOIO);
5029 }
5030
5031 spin_lock_irq(&data->txlock);
5032 play_deferred(data);
5033 clear_bit(BTUSB_SUSPENDING, &data->flags);
5034 spin_unlock_irq(&data->txlock);
5035 schedule_work(&data->work);
5036
5037 return 0;
5038
5039 failed:
5040 usb_scuttle_anchored_urbs(&data->deferred);
5041 done:
5042 spin_lock_irq(&data->txlock);
5043 clear_bit(BTUSB_SUSPENDING, &data->flags);
5044 spin_unlock_irq(&data->txlock);
5045
5046 return err;
5047 }
5048 #endif
5049
5050 static struct usb_driver btusb_driver = {
5051 .name = "btusb",
5052 .probe = btusb_probe,
5053 .disconnect = btusb_disconnect,
5054 #ifdef CONFIG_PM
5055 .suspend = btusb_suspend,
5056 .resume = btusb_resume,
5057 #endif
5058 .id_table = btusb_table,
5059 .supports_autosuspend = 1,
5060 .disable_hub_initiated_lpm = 1,
5061 };
5062
5063 module_usb_driver(btusb_driver);
5064
5065 module_param(disable_scofix, bool, 0644);
5066 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
5067
5068 module_param(force_scofix, bool, 0644);
5069 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
5070
5071 module_param(enable_autosuspend, bool, 0644);
5072 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
5073
5074 module_param(reset, bool, 0644);
5075 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
5076
5077 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
5078 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
5079 MODULE_VERSION(VERSION);
5080 MODULE_LICENSE("GPL");
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