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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 <linux/debugfs.h>
20#include <asm/unaligned.h>
21
22#include <net/bluetooth/bluetooth.h>
23#include <net/bluetooth/hci_core.h>
24
25#include "btintel.h"
26#include "btbcm.h"
27#include "btrtl.h"
28#include "btmtk.h"
29
30#define VERSION "0.8"
31
32static bool disable_scofix;
33static bool force_scofix;
34static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND);
35static bool enable_poll_sync = IS_ENABLED(CONFIG_BT_HCIBTUSB_POLL_SYNC);
36static bool reset = true;
37
38static struct usb_driver btusb_driver;
39
40#define BTUSB_IGNORE BIT(0)
41#define BTUSB_DIGIANSWER BIT(1)
42#define BTUSB_CSR BIT(2)
43#define BTUSB_SNIFFER BIT(3)
44#define BTUSB_BCM92035 BIT(4)
45#define BTUSB_BROKEN_ISOC BIT(5)
46#define BTUSB_WRONG_SCO_MTU BIT(6)
47#define BTUSB_ATH3012 BIT(7)
48#define BTUSB_INTEL_COMBINED BIT(8)
49#define BTUSB_INTEL_BOOT BIT(9)
50#define BTUSB_BCM_PATCHRAM BIT(10)
51#define BTUSB_MARVELL BIT(11)
52#define BTUSB_SWAVE BIT(12)
53#define BTUSB_AMP BIT(13)
54#define BTUSB_QCA_ROME BIT(14)
55#define BTUSB_BCM_APPLE BIT(15)
56#define BTUSB_REALTEK BIT(16)
57#define BTUSB_BCM2045 BIT(17)
58#define BTUSB_IFNUM_2 BIT(18)
59#define BTUSB_CW6622 BIT(19)
60#define BTUSB_MEDIATEK BIT(20)
61#define BTUSB_WIDEBAND_SPEECH BIT(21)
62#define BTUSB_VALID_LE_STATES BIT(22)
63#define BTUSB_QCA_WCN6855 BIT(23)
64#define BTUSB_INTEL_BROKEN_SHUTDOWN_LED BIT(24)
65#define BTUSB_INTEL_BROKEN_INITIAL_NCMD BIT(25)
66#define BTUSB_INTEL_NO_WBS_SUPPORT BIT(26)
67
68static const struct usb_device_id btusb_table[] = {
69 /* Generic Bluetooth USB device */
70 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
71
72 /* Generic Bluetooth AMP device */
73 { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
74
75 /* Generic Bluetooth USB interface */
76 { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
77
78 /* Apple-specific (Broadcom) devices */
79 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
80 .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
81
82 /* MediaTek MT76x0E */
83 { USB_DEVICE(0x0e8d, 0x763f) },
84
85 /* Broadcom SoftSailing reporting vendor specific */
86 { USB_DEVICE(0x0a5c, 0x21e1) },
87
88 /* Apple MacBookPro 7,1 */
89 { USB_DEVICE(0x05ac, 0x8213) },
90
91 /* Apple iMac11,1 */
92 { USB_DEVICE(0x05ac, 0x8215) },
93
94 /* Apple MacBookPro6,2 */
95 { USB_DEVICE(0x05ac, 0x8218) },
96
97 /* Apple MacBookAir3,1, MacBookAir3,2 */
98 { USB_DEVICE(0x05ac, 0x821b) },
99
100 /* Apple MacBookAir4,1 */
101 { USB_DEVICE(0x05ac, 0x821f) },
102
103 /* Apple MacBookPro8,2 */
104 { USB_DEVICE(0x05ac, 0x821a) },
105
106 /* Apple MacMini5,1 */
107 { USB_DEVICE(0x05ac, 0x8281) },
108
109 /* AVM BlueFRITZ! USB v2.0 */
110 { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
111
112 /* Bluetooth Ultraport Module from IBM */
113 { USB_DEVICE(0x04bf, 0x030a) },
114
115 /* ALPS Modules with non-standard id */
116 { USB_DEVICE(0x044e, 0x3001) },
117 { USB_DEVICE(0x044e, 0x3002) },
118
119 /* Ericsson with non-standard id */
120 { USB_DEVICE(0x0bdb, 0x1002) },
121
122 /* Canyon CN-BTU1 with HID interfaces */
123 { USB_DEVICE(0x0c10, 0x0000) },
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
175MODULE_DEVICE_TABLE(usb, btusb_table);
176
177static 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(0x0cf3, 0xe500), .driver_info = BTUSB_QCA_ROME |
274 BTUSB_WIDEBAND_SPEECH },
275 { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME |
276 BTUSB_WIDEBAND_SPEECH },
277 { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME |
278 BTUSB_WIDEBAND_SPEECH },
279 { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME |
280 BTUSB_WIDEBAND_SPEECH },
281 { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME |
282 BTUSB_WIDEBAND_SPEECH },
283 { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME |
284 BTUSB_WIDEBAND_SPEECH },
285 { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME |
286 BTUSB_WIDEBAND_SPEECH },
287 { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME |
288 BTUSB_WIDEBAND_SPEECH },
289 { USB_DEVICE(0x04ca, 0x3021), .driver_info = BTUSB_QCA_ROME |
290 BTUSB_WIDEBAND_SPEECH },
291 { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME |
292 BTUSB_WIDEBAND_SPEECH },
293 { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME |
294 BTUSB_WIDEBAND_SPEECH },
295 { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME |
296 BTUSB_WIDEBAND_SPEECH },
297
298 /* QCA WCN6855 chipset */
299 { USB_DEVICE(0x0cf3, 0xe600), .driver_info = BTUSB_QCA_WCN6855 |
300 BTUSB_WIDEBAND_SPEECH |
301 BTUSB_VALID_LE_STATES },
302 { USB_DEVICE(0x0489, 0xe0cc), .driver_info = BTUSB_QCA_WCN6855 |
303 BTUSB_WIDEBAND_SPEECH |
304 BTUSB_VALID_LE_STATES },
305 { USB_DEVICE(0x0489, 0xe0d6), .driver_info = BTUSB_QCA_WCN6855 |
306 BTUSB_WIDEBAND_SPEECH |
307 BTUSB_VALID_LE_STATES },
308 { USB_DEVICE(0x0489, 0xe0e3), .driver_info = BTUSB_QCA_WCN6855 |
309 BTUSB_WIDEBAND_SPEECH |
310 BTUSB_VALID_LE_STATES },
311 { USB_DEVICE(0x10ab, 0x9309), .driver_info = BTUSB_QCA_WCN6855 |
312 BTUSB_WIDEBAND_SPEECH |
313 BTUSB_VALID_LE_STATES },
314 { USB_DEVICE(0x10ab, 0x9409), .driver_info = BTUSB_QCA_WCN6855 |
315 BTUSB_WIDEBAND_SPEECH |
316 BTUSB_VALID_LE_STATES },
317 { USB_DEVICE(0x0489, 0xe0d0), .driver_info = BTUSB_QCA_WCN6855 |
318 BTUSB_WIDEBAND_SPEECH |
319 BTUSB_VALID_LE_STATES },
320 { USB_DEVICE(0x10ab, 0x9108), .driver_info = BTUSB_QCA_WCN6855 |
321 BTUSB_WIDEBAND_SPEECH |
322 BTUSB_VALID_LE_STATES },
323 { USB_DEVICE(0x10ab, 0x9109), .driver_info = BTUSB_QCA_WCN6855 |
324 BTUSB_WIDEBAND_SPEECH |
325 BTUSB_VALID_LE_STATES },
326 { USB_DEVICE(0x10ab, 0x9208), .driver_info = BTUSB_QCA_WCN6855 |
327 BTUSB_WIDEBAND_SPEECH |
328 BTUSB_VALID_LE_STATES },
329 { USB_DEVICE(0x10ab, 0x9209), .driver_info = BTUSB_QCA_WCN6855 |
330 BTUSB_WIDEBAND_SPEECH |
331 BTUSB_VALID_LE_STATES },
332 { USB_DEVICE(0x10ab, 0x9308), .driver_info = BTUSB_QCA_WCN6855 |
333 BTUSB_WIDEBAND_SPEECH |
334 BTUSB_VALID_LE_STATES },
335 { USB_DEVICE(0x10ab, 0x9408), .driver_info = BTUSB_QCA_WCN6855 |
336 BTUSB_WIDEBAND_SPEECH |
337 BTUSB_VALID_LE_STATES },
338 { USB_DEVICE(0x10ab, 0x9508), .driver_info = BTUSB_QCA_WCN6855 |
339 BTUSB_WIDEBAND_SPEECH |
340 BTUSB_VALID_LE_STATES },
341 { USB_DEVICE(0x10ab, 0x9509), .driver_info = BTUSB_QCA_WCN6855 |
342 BTUSB_WIDEBAND_SPEECH |
343 BTUSB_VALID_LE_STATES },
344 { USB_DEVICE(0x10ab, 0x9608), .driver_info = BTUSB_QCA_WCN6855 |
345 BTUSB_WIDEBAND_SPEECH |
346 BTUSB_VALID_LE_STATES },
347 { USB_DEVICE(0x10ab, 0x9609), .driver_info = BTUSB_QCA_WCN6855 |
348 BTUSB_WIDEBAND_SPEECH |
349 BTUSB_VALID_LE_STATES },
350 { USB_DEVICE(0x10ab, 0x9f09), .driver_info = BTUSB_QCA_WCN6855 |
351 BTUSB_WIDEBAND_SPEECH |
352 BTUSB_VALID_LE_STATES },
353 { USB_DEVICE(0x04ca, 0x3022), .driver_info = BTUSB_QCA_WCN6855 |
354 BTUSB_WIDEBAND_SPEECH |
355 BTUSB_VALID_LE_STATES },
356 { USB_DEVICE(0x0489, 0xe0c7), .driver_info = BTUSB_QCA_WCN6855 |
357 BTUSB_WIDEBAND_SPEECH |
358 BTUSB_VALID_LE_STATES },
359 { USB_DEVICE(0x0489, 0xe0c9), .driver_info = BTUSB_QCA_WCN6855 |
360 BTUSB_WIDEBAND_SPEECH |
361 BTUSB_VALID_LE_STATES },
362 { USB_DEVICE(0x0489, 0xe0ca), .driver_info = BTUSB_QCA_WCN6855 |
363 BTUSB_WIDEBAND_SPEECH |
364 BTUSB_VALID_LE_STATES },
365 { USB_DEVICE(0x0489, 0xe0cb), .driver_info = BTUSB_QCA_WCN6855 |
366 BTUSB_WIDEBAND_SPEECH |
367 BTUSB_VALID_LE_STATES },
368 { USB_DEVICE(0x0489, 0xe0ce), .driver_info = BTUSB_QCA_WCN6855 |
369 BTUSB_WIDEBAND_SPEECH |
370 BTUSB_VALID_LE_STATES },
371 { USB_DEVICE(0x0489, 0xe0de), .driver_info = BTUSB_QCA_WCN6855 |
372 BTUSB_WIDEBAND_SPEECH |
373 BTUSB_VALID_LE_STATES },
374 { USB_DEVICE(0x0489, 0xe0df), .driver_info = BTUSB_QCA_WCN6855 |
375 BTUSB_WIDEBAND_SPEECH |
376 BTUSB_VALID_LE_STATES },
377 { USB_DEVICE(0x0489, 0xe0e1), .driver_info = BTUSB_QCA_WCN6855 |
378 BTUSB_WIDEBAND_SPEECH |
379 BTUSB_VALID_LE_STATES },
380 { USB_DEVICE(0x0489, 0xe0ea), .driver_info = BTUSB_QCA_WCN6855 |
381 BTUSB_WIDEBAND_SPEECH |
382 BTUSB_VALID_LE_STATES },
383 { USB_DEVICE(0x0489, 0xe0ec), .driver_info = BTUSB_QCA_WCN6855 |
384 BTUSB_WIDEBAND_SPEECH |
385 BTUSB_VALID_LE_STATES },
386 { USB_DEVICE(0x04ca, 0x3023), .driver_info = BTUSB_QCA_WCN6855 |
387 BTUSB_WIDEBAND_SPEECH |
388 BTUSB_VALID_LE_STATES },
389 { USB_DEVICE(0x04ca, 0x3024), .driver_info = BTUSB_QCA_WCN6855 |
390 BTUSB_WIDEBAND_SPEECH |
391 BTUSB_VALID_LE_STATES },
392 { USB_DEVICE(0x04ca, 0x3a22), .driver_info = BTUSB_QCA_WCN6855 |
393 BTUSB_WIDEBAND_SPEECH |
394 BTUSB_VALID_LE_STATES },
395 { USB_DEVICE(0x04ca, 0x3a24), .driver_info = BTUSB_QCA_WCN6855 |
396 BTUSB_WIDEBAND_SPEECH |
397 BTUSB_VALID_LE_STATES },
398 { USB_DEVICE(0x04ca, 0x3a26), .driver_info = BTUSB_QCA_WCN6855 |
399 BTUSB_WIDEBAND_SPEECH |
400 BTUSB_VALID_LE_STATES },
401 { USB_DEVICE(0x04ca, 0x3a27), .driver_info = BTUSB_QCA_WCN6855 |
402 BTUSB_WIDEBAND_SPEECH |
403 BTUSB_VALID_LE_STATES },
404
405 /* QCA WCN785x chipset */
406 { USB_DEVICE(0x0cf3, 0xe700), .driver_info = BTUSB_QCA_WCN6855 |
407 BTUSB_WIDEBAND_SPEECH |
408 BTUSB_VALID_LE_STATES },
409
410 /* Broadcom BCM2035 */
411 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
412 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
413 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
414
415 /* Broadcom BCM2045 */
416 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
417 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
418
419 /* IBM/Lenovo ThinkPad with Broadcom chip */
420 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
421 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
422
423 /* HP laptop with Broadcom chip */
424 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
425
426 /* Dell laptop with Broadcom chip */
427 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
428
429 /* Dell Wireless 370 and 410 devices */
430 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
431 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
432
433 /* Belkin F8T012 and F8T013 devices */
434 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
435 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
436
437 /* Asus WL-BTD202 device */
438 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
439
440 /* Kensington Bluetooth USB adapter */
441 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
442
443 /* RTX Telecom based adapters with buggy SCO support */
444 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
445 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
446
447 /* CONWISE Technology based adapters with buggy SCO support */
448 { USB_DEVICE(0x0e5e, 0x6622),
449 .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
450
451 /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
452 { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
453
454 /* Digianswer devices */
455 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
456 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
457
458 /* CSR BlueCore Bluetooth Sniffer */
459 { USB_DEVICE(0x0a12, 0x0002),
460 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
461
462 /* Frontline ComProbe Bluetooth Sniffer */
463 { USB_DEVICE(0x16d3, 0x0002),
464 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
465
466 /* Marvell Bluetooth devices */
467 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
468 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
469 { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
470
471 /* Intel Bluetooth devices */
472 { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_COMBINED },
473 { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_COMBINED },
474 { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_COMBINED },
475 { USB_DEVICE(0x8087, 0x0032), .driver_info = BTUSB_INTEL_COMBINED },
476 { USB_DEVICE(0x8087, 0x0033), .driver_info = BTUSB_INTEL_COMBINED },
477 { USB_DEVICE(0x8087, 0x0035), .driver_info = BTUSB_INTEL_COMBINED },
478 { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
479 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL_COMBINED |
480 BTUSB_INTEL_NO_WBS_SUPPORT |
481 BTUSB_INTEL_BROKEN_INITIAL_NCMD |
482 BTUSB_INTEL_BROKEN_SHUTDOWN_LED },
483 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL_COMBINED |
484 BTUSB_INTEL_NO_WBS_SUPPORT |
485 BTUSB_INTEL_BROKEN_SHUTDOWN_LED },
486 { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_COMBINED },
487 { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL_COMBINED |
488 BTUSB_INTEL_BROKEN_SHUTDOWN_LED },
489 { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_COMBINED },
490
491 /* Other Intel Bluetooth devices */
492 { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
493 .driver_info = BTUSB_IGNORE },
494
495 /* Realtek 8822CE Bluetooth devices */
496 { USB_DEVICE(0x0bda, 0xb00c), .driver_info = BTUSB_REALTEK |
497 BTUSB_WIDEBAND_SPEECH },
498 { USB_DEVICE(0x0bda, 0xc822), .driver_info = BTUSB_REALTEK |
499 BTUSB_WIDEBAND_SPEECH },
500
501 /* Realtek 8822CU Bluetooth devices */
502 { USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK |
503 BTUSB_WIDEBAND_SPEECH },
504
505 /* Realtek 8852AE Bluetooth devices */
506 { USB_DEVICE(0x0bda, 0x2852), .driver_info = BTUSB_REALTEK |
507 BTUSB_WIDEBAND_SPEECH },
508 { USB_DEVICE(0x0bda, 0xc852), .driver_info = BTUSB_REALTEK |
509 BTUSB_WIDEBAND_SPEECH },
510 { USB_DEVICE(0x0bda, 0x385a), .driver_info = BTUSB_REALTEK |
511 BTUSB_WIDEBAND_SPEECH },
512 { USB_DEVICE(0x0bda, 0x4852), .driver_info = BTUSB_REALTEK |
513 BTUSB_WIDEBAND_SPEECH },
514 { USB_DEVICE(0x04c5, 0x165c), .driver_info = BTUSB_REALTEK |
515 BTUSB_WIDEBAND_SPEECH },
516 { USB_DEVICE(0x04ca, 0x4006), .driver_info = BTUSB_REALTEK |
517 BTUSB_WIDEBAND_SPEECH },
518 { USB_DEVICE(0x0cb8, 0xc549), .driver_info = BTUSB_REALTEK |
519 BTUSB_WIDEBAND_SPEECH },
520
521 /* Realtek 8852CE Bluetooth devices */
522 { USB_DEVICE(0x04ca, 0x4007), .driver_info = BTUSB_REALTEK |
523 BTUSB_WIDEBAND_SPEECH },
524 { USB_DEVICE(0x04c5, 0x1675), .driver_info = BTUSB_REALTEK |
525 BTUSB_WIDEBAND_SPEECH },
526 { USB_DEVICE(0x0cb8, 0xc558), .driver_info = BTUSB_REALTEK |
527 BTUSB_WIDEBAND_SPEECH },
528 { USB_DEVICE(0x13d3, 0x3587), .driver_info = BTUSB_REALTEK |
529 BTUSB_WIDEBAND_SPEECH },
530 { USB_DEVICE(0x13d3, 0x3586), .driver_info = BTUSB_REALTEK |
531 BTUSB_WIDEBAND_SPEECH },
532 { USB_DEVICE(0x13d3, 0x3592), .driver_info = BTUSB_REALTEK |
533 BTUSB_WIDEBAND_SPEECH },
534
535 /* Realtek 8852BE Bluetooth devices */
536 { USB_DEVICE(0x0cb8, 0xc559), .driver_info = BTUSB_REALTEK |
537 BTUSB_WIDEBAND_SPEECH },
538
539 /* Realtek Bluetooth devices */
540 { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
541 .driver_info = BTUSB_REALTEK },
542
543 /* MediaTek Bluetooth devices */
544 { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01),
545 .driver_info = BTUSB_MEDIATEK |
546 BTUSB_WIDEBAND_SPEECH |
547 BTUSB_VALID_LE_STATES },
548
549 /* Additional MediaTek MT7615E Bluetooth devices */
550 { USB_DEVICE(0x13d3, 0x3560), .driver_info = BTUSB_MEDIATEK},
551
552 /* Additional MediaTek MT7663 Bluetooth devices */
553 { USB_DEVICE(0x043e, 0x310c), .driver_info = BTUSB_MEDIATEK |
554 BTUSB_WIDEBAND_SPEECH |
555 BTUSB_VALID_LE_STATES },
556
557 /* Additional MediaTek MT7668 Bluetooth devices */
558 { USB_DEVICE(0x043e, 0x3109), .driver_info = BTUSB_MEDIATEK |
559 BTUSB_WIDEBAND_SPEECH |
560 BTUSB_VALID_LE_STATES },
561
562 /* Additional MediaTek MT7921 Bluetooth devices */
563 { USB_DEVICE(0x0489, 0xe0c8), .driver_info = BTUSB_MEDIATEK |
564 BTUSB_WIDEBAND_SPEECH |
565 BTUSB_VALID_LE_STATES },
566 { USB_DEVICE(0x0489, 0xe0e0), .driver_info = BTUSB_MEDIATEK |
567 BTUSB_WIDEBAND_SPEECH |
568 BTUSB_VALID_LE_STATES },
569 { USB_DEVICE(0x04ca, 0x3802), .driver_info = BTUSB_MEDIATEK |
570 BTUSB_WIDEBAND_SPEECH |
571 BTUSB_VALID_LE_STATES },
572 { USB_DEVICE(0x13d3, 0x3563), .driver_info = BTUSB_MEDIATEK |
573 BTUSB_WIDEBAND_SPEECH |
574 BTUSB_VALID_LE_STATES },
575 { USB_DEVICE(0x13d3, 0x3564), .driver_info = BTUSB_MEDIATEK |
576 BTUSB_WIDEBAND_SPEECH |
577 BTUSB_VALID_LE_STATES },
578 { USB_DEVICE(0x13d3, 0x3567), .driver_info = BTUSB_MEDIATEK |
579 BTUSB_WIDEBAND_SPEECH |
580 BTUSB_VALID_LE_STATES },
581 { USB_DEVICE(0x13d3, 0x3578), .driver_info = BTUSB_MEDIATEK |
582 BTUSB_WIDEBAND_SPEECH |
583 BTUSB_VALID_LE_STATES },
584 { USB_DEVICE(0x13d3, 0x3583), .driver_info = BTUSB_MEDIATEK |
585 BTUSB_WIDEBAND_SPEECH |
586 BTUSB_VALID_LE_STATES },
587 { USB_DEVICE(0x0489, 0xe0cd), .driver_info = BTUSB_MEDIATEK |
588 BTUSB_WIDEBAND_SPEECH |
589 BTUSB_VALID_LE_STATES },
590 { USB_DEVICE(0x0e8d, 0x0608), .driver_info = BTUSB_MEDIATEK |
591 BTUSB_WIDEBAND_SPEECH |
592 BTUSB_VALID_LE_STATES },
593
594 /* MediaTek MT7922A Bluetooth devices */
595 { USB_DEVICE(0x0489, 0xe0d8), .driver_info = BTUSB_MEDIATEK |
596 BTUSB_WIDEBAND_SPEECH |
597 BTUSB_VALID_LE_STATES },
598 { USB_DEVICE(0x0489, 0xe0d9), .driver_info = BTUSB_MEDIATEK |
599 BTUSB_WIDEBAND_SPEECH |
600 BTUSB_VALID_LE_STATES },
601 { USB_DEVICE(0x13d3, 0x3568), .driver_info = BTUSB_MEDIATEK |
602 BTUSB_WIDEBAND_SPEECH |
603 BTUSB_VALID_LE_STATES },
604 { USB_DEVICE(0x0489, 0xe0e2), .driver_info = BTUSB_MEDIATEK |
605 BTUSB_WIDEBAND_SPEECH |
606 BTUSB_VALID_LE_STATES },
607 { USB_DEVICE(0x0489, 0xe0f2), .driver_info = BTUSB_MEDIATEK |
608 BTUSB_WIDEBAND_SPEECH |
609 BTUSB_VALID_LE_STATES },
610
611 /* Additional Realtek 8723AE Bluetooth devices */
612 { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
613 { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
614
615 /* Additional Realtek 8723BE Bluetooth devices */
616 { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
617 { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
618 { USB_DEVICE(0x04f2, 0xb49f), .driver_info = BTUSB_REALTEK },
619 { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
620 { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
621 { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
622 { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
623
624 /* Additional Realtek 8723BU Bluetooth devices */
625 { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
626
627 /* Additional Realtek 8723DE Bluetooth devices */
628 { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
629 { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
630
631 /* Additional Realtek 8761BUV Bluetooth devices */
632 { USB_DEVICE(0x2357, 0x0604), .driver_info = BTUSB_REALTEK |
633 BTUSB_WIDEBAND_SPEECH },
634 { USB_DEVICE(0x0b05, 0x190e), .driver_info = BTUSB_REALTEK |
635 BTUSB_WIDEBAND_SPEECH },
636 { USB_DEVICE(0x2550, 0x8761), .driver_info = BTUSB_REALTEK |
637 BTUSB_WIDEBAND_SPEECH },
638 { USB_DEVICE(0x0bda, 0x8771), .driver_info = BTUSB_REALTEK |
639 BTUSB_WIDEBAND_SPEECH },
640 { USB_DEVICE(0x7392, 0xc611), .driver_info = BTUSB_REALTEK |
641 BTUSB_WIDEBAND_SPEECH },
642 { USB_DEVICE(0x2b89, 0x8761), .driver_info = BTUSB_REALTEK |
643 BTUSB_WIDEBAND_SPEECH },
644
645 /* Additional Realtek 8821AE Bluetooth devices */
646 { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
647 { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
648 { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
649 { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
650 { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
651
652 /* Additional Realtek 8822BE Bluetooth devices */
653 { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
654 { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
655
656 /* Additional Realtek 8822CE Bluetooth devices */
657 { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK |
658 BTUSB_WIDEBAND_SPEECH },
659 { USB_DEVICE(0x04c5, 0x161f), .driver_info = BTUSB_REALTEK |
660 BTUSB_WIDEBAND_SPEECH },
661 { USB_DEVICE(0x0b05, 0x18ef), .driver_info = BTUSB_REALTEK |
662 BTUSB_WIDEBAND_SPEECH },
663 { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK |
664 BTUSB_WIDEBAND_SPEECH },
665 { USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK |
666 BTUSB_WIDEBAND_SPEECH },
667 { USB_DEVICE(0x13d3, 0x3553), .driver_info = BTUSB_REALTEK |
668 BTUSB_WIDEBAND_SPEECH },
669 { USB_DEVICE(0x13d3, 0x3555), .driver_info = BTUSB_REALTEK |
670 BTUSB_WIDEBAND_SPEECH },
671 { USB_DEVICE(0x2ff8, 0x3051), .driver_info = BTUSB_REALTEK |
672 BTUSB_WIDEBAND_SPEECH },
673 { USB_DEVICE(0x1358, 0xc123), .driver_info = BTUSB_REALTEK |
674 BTUSB_WIDEBAND_SPEECH },
675 { USB_DEVICE(0x0bda, 0xc123), .driver_info = BTUSB_REALTEK |
676 BTUSB_WIDEBAND_SPEECH },
677 { USB_DEVICE(0x0cb5, 0xc547), .driver_info = BTUSB_REALTEK |
678 BTUSB_WIDEBAND_SPEECH },
679
680 /* Silicon Wave based devices */
681 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
682
683 { } /* Terminating entry */
684};
685
686/* The Bluetooth USB module build into some devices needs to be reset on resume,
687 * this is a problem with the platform (likely shutting off all power) not with
688 * the module itself. So we use a DMI list to match known broken platforms.
689 */
690static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
691 {
692 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
693 .matches = {
694 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
695 DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
696 },
697 },
698 {
699 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
700 .matches = {
701 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
702 DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
703 },
704 },
705 {
706 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
707 .matches = {
708 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
709 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
710 },
711 },
712 {}
713};
714
715#define BTUSB_MAX_ISOC_FRAMES 10
716
717#define BTUSB_INTR_RUNNING 0
718#define BTUSB_BULK_RUNNING 1
719#define BTUSB_ISOC_RUNNING 2
720#define BTUSB_SUSPENDING 3
721#define BTUSB_DID_ISO_RESUME 4
722#define BTUSB_BOOTLOADER 5
723#define BTUSB_DOWNLOADING 6
724#define BTUSB_FIRMWARE_LOADED 7
725#define BTUSB_FIRMWARE_FAILED 8
726#define BTUSB_BOOTING 9
727#define BTUSB_DIAG_RUNNING 10
728#define BTUSB_OOB_WAKE_ENABLED 11
729#define BTUSB_HW_RESET_ACTIVE 12
730#define BTUSB_TX_WAIT_VND_EVT 13
731#define BTUSB_WAKEUP_AUTOSUSPEND 14
732#define BTUSB_USE_ALT3_FOR_WBS 15
733#define BTUSB_ALT6_CONTINUOUS_TX 16
734
735struct btusb_data {
736 struct hci_dev *hdev;
737 struct usb_device *udev;
738 struct usb_interface *intf;
739 struct usb_interface *isoc;
740 struct usb_interface *diag;
741 unsigned isoc_ifnum;
742
743 unsigned long flags;
744
745 bool poll_sync;
746 int intr_interval;
747 struct work_struct work;
748 struct work_struct waker;
749 struct delayed_work rx_work;
750
751 struct sk_buff_head acl_q;
752
753 struct usb_anchor deferred;
754 struct usb_anchor tx_anchor;
755 int tx_in_flight;
756 spinlock_t txlock;
757
758 struct usb_anchor intr_anchor;
759 struct usb_anchor bulk_anchor;
760 struct usb_anchor isoc_anchor;
761 struct usb_anchor diag_anchor;
762 struct usb_anchor ctrl_anchor;
763 spinlock_t rxlock;
764
765 struct sk_buff *evt_skb;
766 struct sk_buff *acl_skb;
767 struct sk_buff *sco_skb;
768
769 struct usb_endpoint_descriptor *intr_ep;
770 struct usb_endpoint_descriptor *bulk_tx_ep;
771 struct usb_endpoint_descriptor *bulk_rx_ep;
772 struct usb_endpoint_descriptor *isoc_tx_ep;
773 struct usb_endpoint_descriptor *isoc_rx_ep;
774 struct usb_endpoint_descriptor *diag_tx_ep;
775 struct usb_endpoint_descriptor *diag_rx_ep;
776
777 struct gpio_desc *reset_gpio;
778
779 __u8 cmdreq_type;
780 __u8 cmdreq;
781
782 unsigned int sco_num;
783 unsigned int air_mode;
784 bool usb_alt6_packet_flow;
785 int isoc_altsetting;
786 int suspend_count;
787
788 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
789 int (*recv_acl)(struct hci_dev *hdev, struct sk_buff *skb);
790 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
791
792 int (*setup_on_usb)(struct hci_dev *hdev);
793
794 int oob_wake_irq; /* irq for out-of-band wake-on-bt */
795 unsigned cmd_timeout_cnt;
796};
797
798static void btusb_reset(struct hci_dev *hdev)
799{
800 struct btusb_data *data;
801 int err;
802
803 if (hdev->reset) {
804 hdev->reset(hdev);
805 return;
806 }
807
808 data = hci_get_drvdata(hdev);
809 /* This is not an unbalanced PM reference since the device will reset */
810 err = usb_autopm_get_interface(data->intf);
811 if (err) {
812 bt_dev_err(hdev, "Failed usb_autopm_get_interface: %d", err);
813 return;
814 }
815
816 bt_dev_err(hdev, "Resetting usb device.");
817 usb_queue_reset_device(data->intf);
818}
819
820static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
821{
822 struct btusb_data *data = hci_get_drvdata(hdev);
823 struct gpio_desc *reset_gpio = data->reset_gpio;
824
825 if (++data->cmd_timeout_cnt < 5)
826 return;
827
828 if (!reset_gpio) {
829 btusb_reset(hdev);
830 return;
831 }
832
833 /*
834 * Toggle the hard reset line if the platform provides one. The reset
835 * is going to yank the device off the USB and then replug. So doing
836 * once is enough. The cleanup is handled correctly on the way out
837 * (standard USB disconnect), and the new device is detected cleanly
838 * and bound to the driver again like it should be.
839 */
840 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
841 bt_dev_err(hdev, "last reset failed? Not resetting again");
842 return;
843 }
844
845 bt_dev_err(hdev, "Initiating HW reset via gpio");
846 gpiod_set_value_cansleep(reset_gpio, 1);
847 msleep(100);
848 gpiod_set_value_cansleep(reset_gpio, 0);
849}
850
851static void btusb_rtl_cmd_timeout(struct hci_dev *hdev)
852{
853 struct btusb_data *data = hci_get_drvdata(hdev);
854 struct gpio_desc *reset_gpio = data->reset_gpio;
855
856 if (++data->cmd_timeout_cnt < 5)
857 return;
858
859 if (!reset_gpio) {
860 btusb_reset(hdev);
861 return;
862 }
863
864 /* Toggle the hard reset line. The Realtek device is going to
865 * yank itself off the USB and then replug. The cleanup is handled
866 * correctly on the way out (standard USB disconnect), and the new
867 * device is detected cleanly and bound to the driver again like
868 * it should be.
869 */
870 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
871 bt_dev_err(hdev, "last reset failed? Not resetting again");
872 return;
873 }
874
875 bt_dev_err(hdev, "Reset Realtek device via gpio");
876 gpiod_set_value_cansleep(reset_gpio, 1);
877 msleep(200);
878 gpiod_set_value_cansleep(reset_gpio, 0);
879}
880
881static void btusb_qca_cmd_timeout(struct hci_dev *hdev)
882{
883 struct btusb_data *data = hci_get_drvdata(hdev);
884 struct gpio_desc *reset_gpio = data->reset_gpio;
885
886 if (++data->cmd_timeout_cnt < 5)
887 return;
888
889 if (reset_gpio) {
890 bt_dev_err(hdev, "Reset qca device via bt_en gpio");
891
892 /* Toggle the hard reset line. The qca bt device is going to
893 * yank itself off the USB and then replug. The cleanup is handled
894 * correctly on the way out (standard USB disconnect), and the new
895 * device is detected cleanly and bound to the driver again like
896 * it should be.
897 */
898 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
899 bt_dev_err(hdev, "last reset failed? Not resetting again");
900 return;
901 }
902
903 gpiod_set_value_cansleep(reset_gpio, 0);
904 msleep(200);
905 gpiod_set_value_cansleep(reset_gpio, 1);
906
907 return;
908 }
909
910 btusb_reset(hdev);
911}
912
913static inline void btusb_free_frags(struct btusb_data *data)
914{
915 unsigned long flags;
916
917 spin_lock_irqsave(&data->rxlock, flags);
918
919 dev_kfree_skb_irq(data->evt_skb);
920 data->evt_skb = NULL;
921
922 dev_kfree_skb_irq(data->acl_skb);
923 data->acl_skb = NULL;
924
925 dev_kfree_skb_irq(data->sco_skb);
926 data->sco_skb = NULL;
927
928 spin_unlock_irqrestore(&data->rxlock, flags);
929}
930
931static int btusb_recv_event(struct btusb_data *data, struct sk_buff *skb)
932{
933 if (data->intr_interval) {
934 /* Trigger dequeue immediatelly if an event is received */
935 schedule_delayed_work(&data->rx_work, 0);
936 }
937
938 return data->recv_event(data->hdev, skb);
939}
940
941static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
942{
943 struct sk_buff *skb;
944 unsigned long flags;
945 int err = 0;
946
947 spin_lock_irqsave(&data->rxlock, flags);
948 skb = data->evt_skb;
949
950 while (count) {
951 int len;
952
953 if (!skb) {
954 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
955 if (!skb) {
956 err = -ENOMEM;
957 break;
958 }
959
960 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
961 hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
962 }
963
964 len = min_t(uint, hci_skb_expect(skb), count);
965 skb_put_data(skb, buffer, len);
966
967 count -= len;
968 buffer += len;
969 hci_skb_expect(skb) -= len;
970
971 if (skb->len == HCI_EVENT_HDR_SIZE) {
972 /* Complete event header */
973 hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
974
975 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
976 kfree_skb(skb);
977 skb = NULL;
978
979 err = -EILSEQ;
980 break;
981 }
982 }
983
984 if (!hci_skb_expect(skb)) {
985 /* Complete frame */
986 btusb_recv_event(data, skb);
987 skb = NULL;
988 }
989 }
990
991 data->evt_skb = skb;
992 spin_unlock_irqrestore(&data->rxlock, flags);
993
994 return err;
995}
996
997static int btusb_recv_acl(struct btusb_data *data, struct sk_buff *skb)
998{
999 /* Only queue ACL packet if intr_interval is set as it means
1000 * force_poll_sync has been enabled.
1001 */
1002 if (!data->intr_interval)
1003 return data->recv_acl(data->hdev, skb);
1004
1005 skb_queue_tail(&data->acl_q, skb);
1006 schedule_delayed_work(&data->rx_work, data->intr_interval);
1007
1008 return 0;
1009}
1010
1011static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
1012{
1013 struct sk_buff *skb;
1014 unsigned long flags;
1015 int err = 0;
1016
1017 spin_lock_irqsave(&data->rxlock, flags);
1018 skb = data->acl_skb;
1019
1020 while (count) {
1021 int len;
1022
1023 if (!skb) {
1024 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
1025 if (!skb) {
1026 err = -ENOMEM;
1027 break;
1028 }
1029
1030 hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
1031 hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
1032 }
1033
1034 len = min_t(uint, hci_skb_expect(skb), count);
1035 skb_put_data(skb, buffer, len);
1036
1037 count -= len;
1038 buffer += len;
1039 hci_skb_expect(skb) -= len;
1040
1041 if (skb->len == HCI_ACL_HDR_SIZE) {
1042 __u16 handle = __le16_to_cpu(hci_acl_hdr(skb)->handle);
1043 __le16 dlen = hci_acl_hdr(skb)->dlen;
1044 __u8 type;
1045
1046 /* Complete ACL header */
1047 hci_skb_expect(skb) = __le16_to_cpu(dlen);
1048
1049 /* Detect if ISO packet has been sent over bulk */
1050 if (hci_conn_num(data->hdev, ISO_LINK)) {
1051 type = hci_conn_lookup_type(data->hdev,
1052 hci_handle(handle));
1053 if (type == ISO_LINK)
1054 hci_skb_pkt_type(skb) = HCI_ISODATA_PKT;
1055 }
1056
1057 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
1058 kfree_skb(skb);
1059 skb = NULL;
1060
1061 err = -EILSEQ;
1062 break;
1063 }
1064 }
1065
1066 if (!hci_skb_expect(skb)) {
1067 /* Complete frame */
1068 btusb_recv_acl(data, skb);
1069 skb = NULL;
1070 }
1071 }
1072
1073 data->acl_skb = skb;
1074 spin_unlock_irqrestore(&data->rxlock, flags);
1075
1076 return err;
1077}
1078
1079static bool btusb_validate_sco_handle(struct hci_dev *hdev,
1080 struct hci_sco_hdr *hdr)
1081{
1082 __u16 handle;
1083
1084 if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL))
1085 // Can't validate, userspace controls everything.
1086 return true;
1087
1088 /*
1089 * USB isochronous transfers are not designed to be reliable and may
1090 * lose fragments. When this happens, the next first fragment
1091 * encountered might actually be a continuation fragment.
1092 * Validate the handle to detect it and drop it, or else the upper
1093 * layer will get garbage for a while.
1094 */
1095
1096 handle = hci_handle(__le16_to_cpu(hdr->handle));
1097
1098 switch (hci_conn_lookup_type(hdev, handle)) {
1099 case SCO_LINK:
1100 case ESCO_LINK:
1101 return true;
1102 default:
1103 return false;
1104 }
1105}
1106
1107static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
1108{
1109 struct sk_buff *skb;
1110 unsigned long flags;
1111 int err = 0;
1112
1113 spin_lock_irqsave(&data->rxlock, flags);
1114 skb = data->sco_skb;
1115
1116 while (count) {
1117 int len;
1118
1119 if (!skb) {
1120 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
1121 if (!skb) {
1122 err = -ENOMEM;
1123 break;
1124 }
1125
1126 hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
1127 hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
1128 }
1129
1130 len = min_t(uint, hci_skb_expect(skb), count);
1131 skb_put_data(skb, buffer, len);
1132
1133 count -= len;
1134 buffer += len;
1135 hci_skb_expect(skb) -= len;
1136
1137 if (skb->len == HCI_SCO_HDR_SIZE) {
1138 /* Complete SCO header */
1139 struct hci_sco_hdr *hdr = hci_sco_hdr(skb);
1140
1141 hci_skb_expect(skb) = hdr->dlen;
1142
1143 if (skb_tailroom(skb) < hci_skb_expect(skb) ||
1144 !btusb_validate_sco_handle(data->hdev, hdr)) {
1145 kfree_skb(skb);
1146 skb = NULL;
1147
1148 err = -EILSEQ;
1149 break;
1150 }
1151 }
1152
1153 if (!hci_skb_expect(skb)) {
1154 /* Complete frame */
1155 hci_recv_frame(data->hdev, skb);
1156 skb = NULL;
1157 }
1158 }
1159
1160 data->sco_skb = skb;
1161 spin_unlock_irqrestore(&data->rxlock, flags);
1162
1163 return err;
1164}
1165
1166static void btusb_intr_complete(struct urb *urb)
1167{
1168 struct hci_dev *hdev = urb->context;
1169 struct btusb_data *data = hci_get_drvdata(hdev);
1170 int err;
1171
1172 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1173 urb->actual_length);
1174
1175 if (!test_bit(HCI_RUNNING, &hdev->flags))
1176 return;
1177
1178 if (urb->status == 0) {
1179 hdev->stat.byte_rx += urb->actual_length;
1180
1181 if (btusb_recv_intr(data, urb->transfer_buffer,
1182 urb->actual_length) < 0) {
1183 bt_dev_err(hdev, "corrupted event packet");
1184 hdev->stat.err_rx++;
1185 }
1186 } else if (urb->status == -ENOENT) {
1187 /* Avoid suspend failed when usb_kill_urb */
1188 return;
1189 }
1190
1191 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
1192 return;
1193
1194 usb_mark_last_busy(data->udev);
1195 usb_anchor_urb(urb, &data->intr_anchor);
1196
1197 err = usb_submit_urb(urb, GFP_ATOMIC);
1198 if (err < 0) {
1199 /* -EPERM: urb is being killed;
1200 * -ENODEV: device got disconnected
1201 */
1202 if (err != -EPERM && err != -ENODEV)
1203 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1204 urb, -err);
1205 if (err != -EPERM)
1206 hci_cmd_sync_cancel(hdev, -err);
1207 usb_unanchor_urb(urb);
1208 }
1209}
1210
1211static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
1212{
1213 struct btusb_data *data = hci_get_drvdata(hdev);
1214 struct urb *urb;
1215 unsigned char *buf;
1216 unsigned int pipe;
1217 int err, size;
1218
1219 BT_DBG("%s", hdev->name);
1220
1221 if (!data->intr_ep)
1222 return -ENODEV;
1223
1224 urb = usb_alloc_urb(0, mem_flags);
1225 if (!urb)
1226 return -ENOMEM;
1227
1228 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
1229
1230 buf = kmalloc(size, mem_flags);
1231 if (!buf) {
1232 usb_free_urb(urb);
1233 return -ENOMEM;
1234 }
1235
1236 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
1237
1238 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
1239 btusb_intr_complete, hdev, data->intr_ep->bInterval);
1240
1241 urb->transfer_flags |= URB_FREE_BUFFER;
1242
1243 usb_anchor_urb(urb, &data->intr_anchor);
1244
1245 err = usb_submit_urb(urb, mem_flags);
1246 if (err < 0) {
1247 if (err != -EPERM && err != -ENODEV)
1248 bt_dev_err(hdev, "urb %p submission failed (%d)",
1249 urb, -err);
1250 if (err != -EPERM)
1251 hci_cmd_sync_cancel(hdev, -err);
1252 usb_unanchor_urb(urb);
1253 }
1254
1255 /* Only initialize intr_interval if URB poll sync is enabled */
1256 if (!data->poll_sync)
1257 goto done;
1258
1259 /* The units are frames (milliseconds) for full and low speed devices,
1260 * and microframes (1/8 millisecond) for highspeed and SuperSpeed
1261 * devices.
1262 *
1263 * This is done once on open/resume so it shouldn't change even if
1264 * force_poll_sync changes.
1265 */
1266 switch (urb->dev->speed) {
1267 case USB_SPEED_SUPER_PLUS:
1268 case USB_SPEED_SUPER: /* units are 125us */
1269 data->intr_interval = usecs_to_jiffies(urb->interval * 125);
1270 break;
1271 default:
1272 data->intr_interval = msecs_to_jiffies(urb->interval);
1273 break;
1274 }
1275
1276done:
1277 usb_free_urb(urb);
1278
1279 return err;
1280}
1281
1282static void btusb_bulk_complete(struct urb *urb)
1283{
1284 struct hci_dev *hdev = urb->context;
1285 struct btusb_data *data = hci_get_drvdata(hdev);
1286 int err;
1287
1288 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1289 urb->actual_length);
1290
1291 if (!test_bit(HCI_RUNNING, &hdev->flags))
1292 return;
1293
1294 if (urb->status == 0) {
1295 hdev->stat.byte_rx += urb->actual_length;
1296
1297 if (data->recv_bulk(data, urb->transfer_buffer,
1298 urb->actual_length) < 0) {
1299 bt_dev_err(hdev, "corrupted ACL packet");
1300 hdev->stat.err_rx++;
1301 }
1302 } else if (urb->status == -ENOENT) {
1303 /* Avoid suspend failed when usb_kill_urb */
1304 return;
1305 }
1306
1307 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
1308 return;
1309
1310 usb_anchor_urb(urb, &data->bulk_anchor);
1311 usb_mark_last_busy(data->udev);
1312
1313 err = usb_submit_urb(urb, GFP_ATOMIC);
1314 if (err < 0) {
1315 /* -EPERM: urb is being killed;
1316 * -ENODEV: device got disconnected
1317 */
1318 if (err != -EPERM && err != -ENODEV)
1319 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1320 urb, -err);
1321 usb_unanchor_urb(urb);
1322 }
1323}
1324
1325static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
1326{
1327 struct btusb_data *data = hci_get_drvdata(hdev);
1328 struct urb *urb;
1329 unsigned char *buf;
1330 unsigned int pipe;
1331 int err, size = HCI_MAX_FRAME_SIZE;
1332
1333 BT_DBG("%s", hdev->name);
1334
1335 if (!data->bulk_rx_ep)
1336 return -ENODEV;
1337
1338 urb = usb_alloc_urb(0, mem_flags);
1339 if (!urb)
1340 return -ENOMEM;
1341
1342 buf = kmalloc(size, mem_flags);
1343 if (!buf) {
1344 usb_free_urb(urb);
1345 return -ENOMEM;
1346 }
1347
1348 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
1349
1350 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1351 btusb_bulk_complete, hdev);
1352
1353 urb->transfer_flags |= URB_FREE_BUFFER;
1354
1355 usb_mark_last_busy(data->udev);
1356 usb_anchor_urb(urb, &data->bulk_anchor);
1357
1358 err = usb_submit_urb(urb, mem_flags);
1359 if (err < 0) {
1360 if (err != -EPERM && err != -ENODEV)
1361 bt_dev_err(hdev, "urb %p submission failed (%d)",
1362 urb, -err);
1363 usb_unanchor_urb(urb);
1364 }
1365
1366 usb_free_urb(urb);
1367
1368 return err;
1369}
1370
1371static void btusb_isoc_complete(struct urb *urb)
1372{
1373 struct hci_dev *hdev = urb->context;
1374 struct btusb_data *data = hci_get_drvdata(hdev);
1375 int i, err;
1376
1377 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1378 urb->actual_length);
1379
1380 if (!test_bit(HCI_RUNNING, &hdev->flags))
1381 return;
1382
1383 if (urb->status == 0) {
1384 for (i = 0; i < urb->number_of_packets; i++) {
1385 unsigned int offset = urb->iso_frame_desc[i].offset;
1386 unsigned int length = urb->iso_frame_desc[i].actual_length;
1387
1388 if (urb->iso_frame_desc[i].status)
1389 continue;
1390
1391 hdev->stat.byte_rx += length;
1392
1393 if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
1394 length) < 0) {
1395 bt_dev_err(hdev, "corrupted SCO packet");
1396 hdev->stat.err_rx++;
1397 }
1398 }
1399 } else if (urb->status == -ENOENT) {
1400 /* Avoid suspend failed when usb_kill_urb */
1401 return;
1402 }
1403
1404 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
1405 return;
1406
1407 usb_anchor_urb(urb, &data->isoc_anchor);
1408
1409 err = usb_submit_urb(urb, GFP_ATOMIC);
1410 if (err < 0) {
1411 /* -EPERM: urb is being killed;
1412 * -ENODEV: device got disconnected
1413 */
1414 if (err != -EPERM && err != -ENODEV)
1415 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1416 urb, -err);
1417 usb_unanchor_urb(urb);
1418 }
1419}
1420
1421static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len,
1422 int mtu, struct btusb_data *data)
1423{
1424 int i = 0, offset = 0;
1425 unsigned int interval;
1426
1427 BT_DBG("len %d mtu %d", len, mtu);
1428
1429 /* For mSBC ALT 6 settings some chips need to transmit the data
1430 * continuously without the zero length of USB packets.
1431 */
1432 if (test_bit(BTUSB_ALT6_CONTINUOUS_TX, &data->flags))
1433 goto ignore_usb_alt6_packet_flow;
1434
1435 /* For mSBC ALT 6 setting the host will send the packet at continuous
1436 * flow. As per core spec 5, vol 4, part B, table 2.1. For ALT setting
1437 * 6 the HCI PACKET INTERVAL should be 7.5ms for every usb packets.
1438 * To maintain the rate we send 63bytes of usb packets alternatively for
1439 * 7ms and 8ms to maintain the rate as 7.5ms.
1440 */
1441 if (data->usb_alt6_packet_flow) {
1442 interval = 7;
1443 data->usb_alt6_packet_flow = false;
1444 } else {
1445 interval = 6;
1446 data->usb_alt6_packet_flow = true;
1447 }
1448
1449 for (i = 0; i < interval; i++) {
1450 urb->iso_frame_desc[i].offset = offset;
1451 urb->iso_frame_desc[i].length = offset;
1452 }
1453
1454ignore_usb_alt6_packet_flow:
1455 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1456 urb->iso_frame_desc[i].offset = offset;
1457 urb->iso_frame_desc[i].length = len;
1458 i++;
1459 }
1460
1461 urb->number_of_packets = i;
1462}
1463
1464static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
1465{
1466 int i, offset = 0;
1467
1468 BT_DBG("len %d mtu %d", len, mtu);
1469
1470 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
1471 i++, offset += mtu, len -= mtu) {
1472 urb->iso_frame_desc[i].offset = offset;
1473 urb->iso_frame_desc[i].length = mtu;
1474 }
1475
1476 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1477 urb->iso_frame_desc[i].offset = offset;
1478 urb->iso_frame_desc[i].length = len;
1479 i++;
1480 }
1481
1482 urb->number_of_packets = i;
1483}
1484
1485static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
1486{
1487 struct btusb_data *data = hci_get_drvdata(hdev);
1488 struct urb *urb;
1489 unsigned char *buf;
1490 unsigned int pipe;
1491 int err, size;
1492
1493 BT_DBG("%s", hdev->name);
1494
1495 if (!data->isoc_rx_ep)
1496 return -ENODEV;
1497
1498 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
1499 if (!urb)
1500 return -ENOMEM;
1501
1502 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
1503 BTUSB_MAX_ISOC_FRAMES;
1504
1505 buf = kmalloc(size, mem_flags);
1506 if (!buf) {
1507 usb_free_urb(urb);
1508 return -ENOMEM;
1509 }
1510
1511 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
1512
1513 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
1514 hdev, data->isoc_rx_ep->bInterval);
1515
1516 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
1517
1518 __fill_isoc_descriptor(urb, size,
1519 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
1520
1521 usb_anchor_urb(urb, &data->isoc_anchor);
1522
1523 err = usb_submit_urb(urb, mem_flags);
1524 if (err < 0) {
1525 if (err != -EPERM && err != -ENODEV)
1526 bt_dev_err(hdev, "urb %p submission failed (%d)",
1527 urb, -err);
1528 usb_unanchor_urb(urb);
1529 }
1530
1531 usb_free_urb(urb);
1532
1533 return err;
1534}
1535
1536static void btusb_diag_complete(struct urb *urb)
1537{
1538 struct hci_dev *hdev = urb->context;
1539 struct btusb_data *data = hci_get_drvdata(hdev);
1540 int err;
1541
1542 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1543 urb->actual_length);
1544
1545 if (urb->status == 0) {
1546 struct sk_buff *skb;
1547
1548 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1549 if (skb) {
1550 skb_put_data(skb, urb->transfer_buffer,
1551 urb->actual_length);
1552 hci_recv_diag(hdev, skb);
1553 }
1554 } else if (urb->status == -ENOENT) {
1555 /* Avoid suspend failed when usb_kill_urb */
1556 return;
1557 }
1558
1559 if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1560 return;
1561
1562 usb_anchor_urb(urb, &data->diag_anchor);
1563 usb_mark_last_busy(data->udev);
1564
1565 err = usb_submit_urb(urb, GFP_ATOMIC);
1566 if (err < 0) {
1567 /* -EPERM: urb is being killed;
1568 * -ENODEV: device got disconnected
1569 */
1570 if (err != -EPERM && err != -ENODEV)
1571 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1572 urb, -err);
1573 usb_unanchor_urb(urb);
1574 }
1575}
1576
1577static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1578{
1579 struct btusb_data *data = hci_get_drvdata(hdev);
1580 struct urb *urb;
1581 unsigned char *buf;
1582 unsigned int pipe;
1583 int err, size = HCI_MAX_FRAME_SIZE;
1584
1585 BT_DBG("%s", hdev->name);
1586
1587 if (!data->diag_rx_ep)
1588 return -ENODEV;
1589
1590 urb = usb_alloc_urb(0, mem_flags);
1591 if (!urb)
1592 return -ENOMEM;
1593
1594 buf = kmalloc(size, mem_flags);
1595 if (!buf) {
1596 usb_free_urb(urb);
1597 return -ENOMEM;
1598 }
1599
1600 pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1601
1602 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1603 btusb_diag_complete, hdev);
1604
1605 urb->transfer_flags |= URB_FREE_BUFFER;
1606
1607 usb_mark_last_busy(data->udev);
1608 usb_anchor_urb(urb, &data->diag_anchor);
1609
1610 err = usb_submit_urb(urb, mem_flags);
1611 if (err < 0) {
1612 if (err != -EPERM && err != -ENODEV)
1613 bt_dev_err(hdev, "urb %p submission failed (%d)",
1614 urb, -err);
1615 usb_unanchor_urb(urb);
1616 }
1617
1618 usb_free_urb(urb);
1619
1620 return err;
1621}
1622
1623static void btusb_tx_complete(struct urb *urb)
1624{
1625 struct sk_buff *skb = urb->context;
1626 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1627 struct btusb_data *data = hci_get_drvdata(hdev);
1628 unsigned long flags;
1629
1630 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1631 urb->actual_length);
1632
1633 if (!test_bit(HCI_RUNNING, &hdev->flags))
1634 goto done;
1635
1636 if (!urb->status) {
1637 hdev->stat.byte_tx += urb->transfer_buffer_length;
1638 } else {
1639 if (hci_skb_pkt_type(skb) == HCI_COMMAND_PKT)
1640 hci_cmd_sync_cancel(hdev, -urb->status);
1641 hdev->stat.err_tx++;
1642 }
1643
1644done:
1645 spin_lock_irqsave(&data->txlock, flags);
1646 data->tx_in_flight--;
1647 spin_unlock_irqrestore(&data->txlock, flags);
1648
1649 kfree(urb->setup_packet);
1650
1651 kfree_skb(skb);
1652}
1653
1654static void btusb_isoc_tx_complete(struct urb *urb)
1655{
1656 struct sk_buff *skb = urb->context;
1657 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1658
1659 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1660 urb->actual_length);
1661
1662 if (!test_bit(HCI_RUNNING, &hdev->flags))
1663 goto done;
1664
1665 if (!urb->status)
1666 hdev->stat.byte_tx += urb->transfer_buffer_length;
1667 else
1668 hdev->stat.err_tx++;
1669
1670done:
1671 kfree(urb->setup_packet);
1672
1673 kfree_skb(skb);
1674}
1675
1676static int btusb_open(struct hci_dev *hdev)
1677{
1678 struct btusb_data *data = hci_get_drvdata(hdev);
1679 int err;
1680
1681 BT_DBG("%s", hdev->name);
1682
1683 err = usb_autopm_get_interface(data->intf);
1684 if (err < 0)
1685 return err;
1686
1687 /* Patching USB firmware files prior to starting any URBs of HCI path
1688 * It is more safe to use USB bulk channel for downloading USB patch
1689 */
1690 if (data->setup_on_usb) {
1691 err = data->setup_on_usb(hdev);
1692 if (err < 0)
1693 goto setup_fail;
1694 }
1695
1696 data->intf->needs_remote_wakeup = 1;
1697
1698 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1699 goto done;
1700
1701 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1702 if (err < 0)
1703 goto failed;
1704
1705 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1706 if (err < 0) {
1707 usb_kill_anchored_urbs(&data->intr_anchor);
1708 goto failed;
1709 }
1710
1711 set_bit(BTUSB_BULK_RUNNING, &data->flags);
1712 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1713
1714 if (data->diag) {
1715 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1716 set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1717 }
1718
1719done:
1720 usb_autopm_put_interface(data->intf);
1721 return 0;
1722
1723failed:
1724 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1725setup_fail:
1726 usb_autopm_put_interface(data->intf);
1727 return err;
1728}
1729
1730static void btusb_stop_traffic(struct btusb_data *data)
1731{
1732 usb_kill_anchored_urbs(&data->intr_anchor);
1733 usb_kill_anchored_urbs(&data->bulk_anchor);
1734 usb_kill_anchored_urbs(&data->isoc_anchor);
1735 usb_kill_anchored_urbs(&data->diag_anchor);
1736 usb_kill_anchored_urbs(&data->ctrl_anchor);
1737}
1738
1739static int btusb_close(struct hci_dev *hdev)
1740{
1741 struct btusb_data *data = hci_get_drvdata(hdev);
1742 int err;
1743
1744 BT_DBG("%s", hdev->name);
1745
1746 cancel_delayed_work(&data->rx_work);
1747 cancel_work_sync(&data->work);
1748 cancel_work_sync(&data->waker);
1749
1750 skb_queue_purge(&data->acl_q);
1751
1752 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1753 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1754 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1755 clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1756
1757 btusb_stop_traffic(data);
1758 btusb_free_frags(data);
1759
1760 err = usb_autopm_get_interface(data->intf);
1761 if (err < 0)
1762 goto failed;
1763
1764 data->intf->needs_remote_wakeup = 0;
1765
1766 /* Enable remote wake up for auto-suspend */
1767 if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags))
1768 data->intf->needs_remote_wakeup = 1;
1769
1770 usb_autopm_put_interface(data->intf);
1771
1772failed:
1773 usb_scuttle_anchored_urbs(&data->deferred);
1774 return 0;
1775}
1776
1777static int btusb_flush(struct hci_dev *hdev)
1778{
1779 struct btusb_data *data = hci_get_drvdata(hdev);
1780
1781 BT_DBG("%s", hdev->name);
1782
1783 cancel_delayed_work(&data->rx_work);
1784
1785 skb_queue_purge(&data->acl_q);
1786
1787 usb_kill_anchored_urbs(&data->tx_anchor);
1788 btusb_free_frags(data);
1789
1790 return 0;
1791}
1792
1793static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1794{
1795 struct btusb_data *data = hci_get_drvdata(hdev);
1796 struct usb_ctrlrequest *dr;
1797 struct urb *urb;
1798 unsigned int pipe;
1799
1800 urb = usb_alloc_urb(0, GFP_KERNEL);
1801 if (!urb)
1802 return ERR_PTR(-ENOMEM);
1803
1804 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1805 if (!dr) {
1806 usb_free_urb(urb);
1807 return ERR_PTR(-ENOMEM);
1808 }
1809
1810 dr->bRequestType = data->cmdreq_type;
1811 dr->bRequest = data->cmdreq;
1812 dr->wIndex = 0;
1813 dr->wValue = 0;
1814 dr->wLength = __cpu_to_le16(skb->len);
1815
1816 pipe = usb_sndctrlpipe(data->udev, 0x00);
1817
1818 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1819 skb->data, skb->len, btusb_tx_complete, skb);
1820
1821 skb->dev = (void *)hdev;
1822
1823 return urb;
1824}
1825
1826static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1827{
1828 struct btusb_data *data = hci_get_drvdata(hdev);
1829 struct urb *urb;
1830 unsigned int pipe;
1831
1832 if (!data->bulk_tx_ep)
1833 return ERR_PTR(-ENODEV);
1834
1835 urb = usb_alloc_urb(0, GFP_KERNEL);
1836 if (!urb)
1837 return ERR_PTR(-ENOMEM);
1838
1839 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1840
1841 usb_fill_bulk_urb(urb, data->udev, pipe,
1842 skb->data, skb->len, btusb_tx_complete, skb);
1843
1844 skb->dev = (void *)hdev;
1845
1846 return urb;
1847}
1848
1849static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1850{
1851 struct btusb_data *data = hci_get_drvdata(hdev);
1852 struct urb *urb;
1853 unsigned int pipe;
1854
1855 if (!data->isoc_tx_ep)
1856 return ERR_PTR(-ENODEV);
1857
1858 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1859 if (!urb)
1860 return ERR_PTR(-ENOMEM);
1861
1862 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1863
1864 usb_fill_int_urb(urb, data->udev, pipe,
1865 skb->data, skb->len, btusb_isoc_tx_complete,
1866 skb, data->isoc_tx_ep->bInterval);
1867
1868 urb->transfer_flags = URB_ISO_ASAP;
1869
1870 if (data->isoc_altsetting == 6)
1871 __fill_isoc_descriptor_msbc(urb, skb->len,
1872 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize),
1873 data);
1874 else
1875 __fill_isoc_descriptor(urb, skb->len,
1876 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1877 skb->dev = (void *)hdev;
1878
1879 return urb;
1880}
1881
1882static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1883{
1884 struct btusb_data *data = hci_get_drvdata(hdev);
1885 int err;
1886
1887 usb_anchor_urb(urb, &data->tx_anchor);
1888
1889 err = usb_submit_urb(urb, GFP_KERNEL);
1890 if (err < 0) {
1891 if (err != -EPERM && err != -ENODEV)
1892 bt_dev_err(hdev, "urb %p submission failed (%d)",
1893 urb, -err);
1894 kfree(urb->setup_packet);
1895 usb_unanchor_urb(urb);
1896 } else {
1897 usb_mark_last_busy(data->udev);
1898 }
1899
1900 usb_free_urb(urb);
1901 return err;
1902}
1903
1904static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1905{
1906 struct btusb_data *data = hci_get_drvdata(hdev);
1907 unsigned long flags;
1908 bool suspending;
1909
1910 spin_lock_irqsave(&data->txlock, flags);
1911 suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1912 if (!suspending)
1913 data->tx_in_flight++;
1914 spin_unlock_irqrestore(&data->txlock, flags);
1915
1916 if (!suspending)
1917 return submit_tx_urb(hdev, urb);
1918
1919 usb_anchor_urb(urb, &data->deferred);
1920 schedule_work(&data->waker);
1921
1922 usb_free_urb(urb);
1923 return 0;
1924}
1925
1926static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1927{
1928 struct urb *urb;
1929
1930 BT_DBG("%s", hdev->name);
1931
1932 switch (hci_skb_pkt_type(skb)) {
1933 case HCI_COMMAND_PKT:
1934 urb = alloc_ctrl_urb(hdev, skb);
1935 if (IS_ERR(urb))
1936 return PTR_ERR(urb);
1937
1938 hdev->stat.cmd_tx++;
1939 return submit_or_queue_tx_urb(hdev, urb);
1940
1941 case HCI_ACLDATA_PKT:
1942 urb = alloc_bulk_urb(hdev, skb);
1943 if (IS_ERR(urb))
1944 return PTR_ERR(urb);
1945
1946 hdev->stat.acl_tx++;
1947 return submit_or_queue_tx_urb(hdev, urb);
1948
1949 case HCI_SCODATA_PKT:
1950 if (hci_conn_num(hdev, SCO_LINK) < 1)
1951 return -ENODEV;
1952
1953 urb = alloc_isoc_urb(hdev, skb);
1954 if (IS_ERR(urb))
1955 return PTR_ERR(urb);
1956
1957 hdev->stat.sco_tx++;
1958 return submit_tx_urb(hdev, urb);
1959
1960 case HCI_ISODATA_PKT:
1961 urb = alloc_bulk_urb(hdev, skb);
1962 if (IS_ERR(urb))
1963 return PTR_ERR(urb);
1964
1965 return submit_or_queue_tx_urb(hdev, urb);
1966 }
1967
1968 return -EILSEQ;
1969}
1970
1971static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1972{
1973 struct btusb_data *data = hci_get_drvdata(hdev);
1974
1975 BT_DBG("%s evt %d", hdev->name, evt);
1976
1977 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1978 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1979 data->air_mode = evt;
1980 schedule_work(&data->work);
1981 }
1982}
1983
1984static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1985{
1986 struct btusb_data *data = hci_get_drvdata(hdev);
1987 struct usb_interface *intf = data->isoc;
1988 struct usb_endpoint_descriptor *ep_desc;
1989 int i, err;
1990
1991 if (!data->isoc)
1992 return -ENODEV;
1993
1994 err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1995 if (err < 0) {
1996 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1997 return err;
1998 }
1999
2000 data->isoc_altsetting = altsetting;
2001
2002 data->isoc_tx_ep = NULL;
2003 data->isoc_rx_ep = NULL;
2004
2005 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2006 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2007
2008 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
2009 data->isoc_tx_ep = ep_desc;
2010 continue;
2011 }
2012
2013 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
2014 data->isoc_rx_ep = ep_desc;
2015 continue;
2016 }
2017 }
2018
2019 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
2020 bt_dev_err(hdev, "invalid SCO descriptors");
2021 return -ENODEV;
2022 }
2023
2024 return 0;
2025}
2026
2027static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts)
2028{
2029 struct btusb_data *data = hci_get_drvdata(hdev);
2030 int err;
2031
2032 if (data->isoc_altsetting != new_alts) {
2033 unsigned long flags;
2034
2035 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2036 usb_kill_anchored_urbs(&data->isoc_anchor);
2037
2038 /* When isochronous alternate setting needs to be
2039 * changed, because SCO connection has been added
2040 * or removed, a packet fragment may be left in the
2041 * reassembling state. This could lead to wrongly
2042 * assembled fragments.
2043 *
2044 * Clear outstanding fragment when selecting a new
2045 * alternate setting.
2046 */
2047 spin_lock_irqsave(&data->rxlock, flags);
2048 kfree_skb(data->sco_skb);
2049 data->sco_skb = NULL;
2050 spin_unlock_irqrestore(&data->rxlock, flags);
2051
2052 err = __set_isoc_interface(hdev, new_alts);
2053 if (err < 0)
2054 return err;
2055 }
2056
2057 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2058 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
2059 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2060 else
2061 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
2062 }
2063
2064 return 0;
2065}
2066
2067static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data,
2068 int alt)
2069{
2070 struct usb_interface *intf = data->isoc;
2071 int i;
2072
2073 BT_DBG("Looking for Alt no :%d", alt);
2074
2075 if (!intf)
2076 return NULL;
2077
2078 for (i = 0; i < intf->num_altsetting; i++) {
2079 if (intf->altsetting[i].desc.bAlternateSetting == alt)
2080 return &intf->altsetting[i];
2081 }
2082
2083 return NULL;
2084}
2085
2086static void btusb_work(struct work_struct *work)
2087{
2088 struct btusb_data *data = container_of(work, struct btusb_data, work);
2089 struct hci_dev *hdev = data->hdev;
2090 int new_alts = 0;
2091 int err;
2092
2093 if (data->sco_num > 0) {
2094 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
2095 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
2096 if (err < 0) {
2097 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2098 usb_kill_anchored_urbs(&data->isoc_anchor);
2099 return;
2100 }
2101
2102 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
2103 }
2104
2105 if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_CVSD) {
2106 if (hdev->voice_setting & 0x0020) {
2107 static const int alts[3] = { 2, 4, 5 };
2108
2109 new_alts = alts[data->sco_num - 1];
2110 } else {
2111 new_alts = data->sco_num;
2112 }
2113 } else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) {
2114 /* Bluetooth USB spec recommends alt 6 (63 bytes), but
2115 * many adapters do not support it. Alt 1 appears to
2116 * work for all adapters that do not have alt 6, and
2117 * which work with WBS at all. Some devices prefer
2118 * alt 3 (HCI payload >= 60 Bytes let air packet
2119 * data satisfy 60 bytes), requiring
2120 * MTU >= 3 (packets) * 25 (size) - 3 (headers) = 72
2121 * see also Core spec 5, vol 4, B 2.1.1 & Table 2.1.
2122 */
2123 if (btusb_find_altsetting(data, 6))
2124 new_alts = 6;
2125 else if (btusb_find_altsetting(data, 3) &&
2126 hdev->sco_mtu >= 72 &&
2127 test_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags))
2128 new_alts = 3;
2129 else
2130 new_alts = 1;
2131 }
2132
2133 if (btusb_switch_alt_setting(hdev, new_alts) < 0)
2134 bt_dev_err(hdev, "set USB alt:(%d) failed!", new_alts);
2135 } else {
2136 usb_kill_anchored_urbs(&data->isoc_anchor);
2137
2138 if (test_and_clear_bit(BTUSB_ISOC_RUNNING, &data->flags))
2139 __set_isoc_interface(hdev, 0);
2140
2141 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
2142 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
2143 }
2144}
2145
2146static void btusb_waker(struct work_struct *work)
2147{
2148 struct btusb_data *data = container_of(work, struct btusb_data, waker);
2149 int err;
2150
2151 err = usb_autopm_get_interface(data->intf);
2152 if (err < 0)
2153 return;
2154
2155 usb_autopm_put_interface(data->intf);
2156}
2157
2158static void btusb_rx_work(struct work_struct *work)
2159{
2160 struct btusb_data *data = container_of(work, struct btusb_data,
2161 rx_work.work);
2162 struct sk_buff *skb;
2163
2164 /* Dequeue ACL data received during the interval */
2165 while ((skb = skb_dequeue(&data->acl_q)))
2166 data->recv_acl(data->hdev, skb);
2167}
2168
2169static int btusb_setup_bcm92035(struct hci_dev *hdev)
2170{
2171 struct sk_buff *skb;
2172 u8 val = 0x00;
2173
2174 BT_DBG("%s", hdev->name);
2175
2176 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
2177 if (IS_ERR(skb))
2178 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
2179 else
2180 kfree_skb(skb);
2181
2182 return 0;
2183}
2184
2185static int btusb_setup_csr(struct hci_dev *hdev)
2186{
2187 struct btusb_data *data = hci_get_drvdata(hdev);
2188 u16 bcdDevice = le16_to_cpu(data->udev->descriptor.bcdDevice);
2189 struct hci_rp_read_local_version *rp;
2190 struct sk_buff *skb;
2191 bool is_fake = false;
2192 int ret;
2193
2194 BT_DBG("%s", hdev->name);
2195
2196 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
2197 HCI_INIT_TIMEOUT);
2198 if (IS_ERR(skb)) {
2199 int err = PTR_ERR(skb);
2200 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
2201 return err;
2202 }
2203
2204 rp = skb_pull_data(skb, sizeof(*rp));
2205 if (!rp) {
2206 bt_dev_err(hdev, "CSR: Local version length mismatch");
2207 kfree_skb(skb);
2208 return -EIO;
2209 }
2210
2211 bt_dev_info(hdev, "CSR: Setting up dongle with HCI ver=%u rev=%04x",
2212 rp->hci_ver, le16_to_cpu(rp->hci_rev));
2213
2214 bt_dev_info(hdev, "LMP ver=%u subver=%04x; manufacturer=%u",
2215 rp->lmp_ver, le16_to_cpu(rp->lmp_subver),
2216 le16_to_cpu(rp->manufacturer));
2217
2218 /* Detect a wide host of Chinese controllers that aren't CSR.
2219 *
2220 * Known fake bcdDevices: 0x0100, 0x0134, 0x1915, 0x2520, 0x7558, 0x8891
2221 *
2222 * The main thing they have in common is that these are really popular low-cost
2223 * options that support newer Bluetooth versions but rely on heavy VID/PID
2224 * squatting of this poor old Bluetooth 1.1 device. Even sold as such.
2225 *
2226 * We detect actual CSR devices by checking that the HCI manufacturer code
2227 * is Cambridge Silicon Radio (10) and ensuring that LMP sub-version and
2228 * HCI rev values always match. As they both store the firmware number.
2229 */
2230 if (le16_to_cpu(rp->manufacturer) != 10 ||
2231 le16_to_cpu(rp->hci_rev) != le16_to_cpu(rp->lmp_subver))
2232 is_fake = true;
2233
2234 /* Known legit CSR firmware build numbers and their supported BT versions:
2235 * - 1.1 (0x1) -> 0x0073, 0x020d, 0x033c, 0x034e
2236 * - 1.2 (0x2) -> 0x04d9, 0x0529
2237 * - 2.0 (0x3) -> 0x07a6, 0x07ad, 0x0c5c
2238 * - 2.1 (0x4) -> 0x149c, 0x1735, 0x1899 (0x1899 is a BlueCore4-External)
2239 * - 4.0 (0x6) -> 0x1d86, 0x2031, 0x22bb
2240 *
2241 * e.g. Real CSR dongles with LMP subversion 0x73 are old enough that
2242 * support BT 1.1 only; so it's a dead giveaway when some
2243 * third-party BT 4.0 dongle reuses it.
2244 */
2245 else if (le16_to_cpu(rp->lmp_subver) <= 0x034e &&
2246 rp->hci_ver > BLUETOOTH_VER_1_1)
2247 is_fake = true;
2248
2249 else if (le16_to_cpu(rp->lmp_subver) <= 0x0529 &&
2250 rp->hci_ver > BLUETOOTH_VER_1_2)
2251 is_fake = true;
2252
2253 else if (le16_to_cpu(rp->lmp_subver) <= 0x0c5c &&
2254 rp->hci_ver > BLUETOOTH_VER_2_0)
2255 is_fake = true;
2256
2257 else if (le16_to_cpu(rp->lmp_subver) <= 0x1899 &&
2258 rp->hci_ver > BLUETOOTH_VER_2_1)
2259 is_fake = true;
2260
2261 else if (le16_to_cpu(rp->lmp_subver) <= 0x22bb &&
2262 rp->hci_ver > BLUETOOTH_VER_4_0)
2263 is_fake = true;
2264
2265 /* Other clones which beat all the above checks */
2266 else if (bcdDevice == 0x0134 &&
2267 le16_to_cpu(rp->lmp_subver) == 0x0c5c &&
2268 rp->hci_ver == BLUETOOTH_VER_2_0)
2269 is_fake = true;
2270
2271 if (is_fake) {
2272 bt_dev_warn(hdev, "CSR: Unbranded CSR clone detected; adding workarounds and force-suspending once...");
2273
2274 /* Generally these clones have big discrepancies between
2275 * advertised features and what's actually supported.
2276 * Probably will need to be expanded in the future;
2277 * without these the controller will lock up.
2278 */
2279 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2280 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks);
2281 set_bit(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL, &hdev->quirks);
2282 set_bit(HCI_QUIRK_NO_SUSPEND_NOTIFIER, &hdev->quirks);
2283
2284 /* Clear the reset quirk since this is not an actual
2285 * early Bluetooth 1.1 device from CSR.
2286 */
2287 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2288 clear_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2289
2290 /*
2291 * Special workaround for these BT 4.0 chip clones, and potentially more:
2292 *
2293 * - 0x0134: a Barrot 8041a02 (HCI rev: 0x0810 sub: 0x1012)
2294 * - 0x7558: IC markings FR3191AHAL 749H15143 (HCI rev/sub-version: 0x0709)
2295 *
2296 * These controllers are really messed-up.
2297 *
2298 * 1. Their bulk RX endpoint will never report any data unless
2299 * the device was suspended at least once (yes, really).
2300 * 2. They will not wakeup when autosuspended and receiving data
2301 * on their bulk RX endpoint from e.g. a keyboard or mouse
2302 * (IOW remote-wakeup support is broken for the bulk endpoint).
2303 *
2304 * To fix 1. enable runtime-suspend, force-suspend the
2305 * HCI and then wake-it up by disabling runtime-suspend.
2306 *
2307 * To fix 2. clear the HCI's can_wake flag, this way the HCI
2308 * will still be autosuspended when it is not open.
2309 *
2310 * --
2311 *
2312 * Because these are widespread problems we prefer generic solutions; so
2313 * apply this initialization quirk to every controller that gets here,
2314 * it should be harmless. The alternative is to not work at all.
2315 */
2316 pm_runtime_allow(&data->udev->dev);
2317
2318 ret = pm_runtime_suspend(&data->udev->dev);
2319 if (ret >= 0)
2320 msleep(200);
2321 else
2322 bt_dev_warn(hdev, "CSR: Couldn't suspend the device for our Barrot 8041a02 receive-issue workaround");
2323
2324 pm_runtime_forbid(&data->udev->dev);
2325
2326 device_set_wakeup_capable(&data->udev->dev, false);
2327
2328 /* Re-enable autosuspend if this was requested */
2329 if (enable_autosuspend)
2330 usb_enable_autosuspend(data->udev);
2331 }
2332
2333 kfree_skb(skb);
2334
2335 return 0;
2336}
2337
2338static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
2339{
2340 struct sk_buff *skb;
2341 struct hci_event_hdr *hdr;
2342 struct hci_ev_cmd_complete *evt;
2343
2344 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
2345 if (!skb)
2346 return -ENOMEM;
2347
2348 hdr = skb_put(skb, sizeof(*hdr));
2349 hdr->evt = HCI_EV_CMD_COMPLETE;
2350 hdr->plen = sizeof(*evt) + 1;
2351
2352 evt = skb_put(skb, sizeof(*evt));
2353 evt->ncmd = 0x01;
2354 evt->opcode = cpu_to_le16(opcode);
2355
2356 skb_put_u8(skb, 0x00);
2357
2358 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2359
2360 return hci_recv_frame(hdev, skb);
2361}
2362
2363static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
2364 int count)
2365{
2366 struct hci_dev *hdev = data->hdev;
2367
2368 /* When the device is in bootloader mode, then it can send
2369 * events via the bulk endpoint. These events are treated the
2370 * same way as the ones received from the interrupt endpoint.
2371 */
2372 if (btintel_test_flag(hdev, INTEL_BOOTLOADER))
2373 return btusb_recv_intr(data, buffer, count);
2374
2375 return btusb_recv_bulk(data, buffer, count);
2376}
2377
2378static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2379{
2380 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) {
2381 struct hci_event_hdr *hdr = (void *)skb->data;
2382
2383 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2384 hdr->plen > 0) {
2385 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2386 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2387
2388 switch (skb->data[2]) {
2389 case 0x02:
2390 /* When switching to the operational firmware
2391 * the device sends a vendor specific event
2392 * indicating that the bootup completed.
2393 */
2394 btintel_bootup(hdev, ptr, len);
2395 break;
2396 case 0x06:
2397 /* When the firmware loading completes the
2398 * device sends out a vendor specific event
2399 * indicating the result of the firmware
2400 * loading.
2401 */
2402 btintel_secure_send_result(hdev, ptr, len);
2403 break;
2404 }
2405 }
2406 }
2407
2408 return hci_recv_frame(hdev, skb);
2409}
2410
2411static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2412{
2413 struct urb *urb;
2414
2415 BT_DBG("%s", hdev->name);
2416
2417 switch (hci_skb_pkt_type(skb)) {
2418 case HCI_COMMAND_PKT:
2419 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) {
2420 struct hci_command_hdr *cmd = (void *)skb->data;
2421 __u16 opcode = le16_to_cpu(cmd->opcode);
2422
2423 /* When in bootloader mode and the command 0xfc09
2424 * is received, it needs to be send down the
2425 * bulk endpoint. So allocate a bulk URB instead.
2426 */
2427 if (opcode == 0xfc09)
2428 urb = alloc_bulk_urb(hdev, skb);
2429 else
2430 urb = alloc_ctrl_urb(hdev, skb);
2431
2432 /* When the 0xfc01 command is issued to boot into
2433 * the operational firmware, it will actually not
2434 * send a command complete event. To keep the flow
2435 * control working inject that event here.
2436 */
2437 if (opcode == 0xfc01)
2438 inject_cmd_complete(hdev, opcode);
2439 } else {
2440 urb = alloc_ctrl_urb(hdev, skb);
2441 }
2442 if (IS_ERR(urb))
2443 return PTR_ERR(urb);
2444
2445 hdev->stat.cmd_tx++;
2446 return submit_or_queue_tx_urb(hdev, urb);
2447
2448 case HCI_ACLDATA_PKT:
2449 urb = alloc_bulk_urb(hdev, skb);
2450 if (IS_ERR(urb))
2451 return PTR_ERR(urb);
2452
2453 hdev->stat.acl_tx++;
2454 return submit_or_queue_tx_urb(hdev, urb);
2455
2456 case HCI_SCODATA_PKT:
2457 if (hci_conn_num(hdev, SCO_LINK) < 1)
2458 return -ENODEV;
2459
2460 urb = alloc_isoc_urb(hdev, skb);
2461 if (IS_ERR(urb))
2462 return PTR_ERR(urb);
2463
2464 hdev->stat.sco_tx++;
2465 return submit_tx_urb(hdev, urb);
2466
2467 case HCI_ISODATA_PKT:
2468 urb = alloc_bulk_urb(hdev, skb);
2469 if (IS_ERR(urb))
2470 return PTR_ERR(urb);
2471
2472 return submit_or_queue_tx_urb(hdev, urb);
2473 }
2474
2475 return -EILSEQ;
2476}
2477
2478static int btusb_setup_realtek(struct hci_dev *hdev)
2479{
2480 struct btusb_data *data = hci_get_drvdata(hdev);
2481 int ret;
2482
2483 ret = btrtl_setup_realtek(hdev);
2484
2485 if (btrealtek_test_flag(data->hdev, REALTEK_ALT6_CONTINUOUS_TX_CHIP))
2486 set_bit(BTUSB_ALT6_CONTINUOUS_TX, &data->flags);
2487
2488 return ret;
2489}
2490
2491/* UHW CR mapping */
2492#define MTK_BT_MISC 0x70002510
2493#define MTK_BT_SUBSYS_RST 0x70002610
2494#define MTK_UDMA_INT_STA_BT 0x74000024
2495#define MTK_UDMA_INT_STA_BT1 0x74000308
2496#define MTK_BT_WDT_STATUS 0x740003A0
2497#define MTK_EP_RST_OPT 0x74011890
2498#define MTK_EP_RST_IN_OUT_OPT 0x00010001
2499#define MTK_BT_RST_DONE 0x00000100
2500#define MTK_BT_RESET_WAIT_MS 100
2501#define MTK_BT_RESET_NUM_TRIES 10
2502
2503static void btusb_mtk_wmt_recv(struct urb *urb)
2504{
2505 struct hci_dev *hdev = urb->context;
2506 struct btusb_data *data = hci_get_drvdata(hdev);
2507 struct sk_buff *skb;
2508 int err;
2509
2510 if (urb->status == 0 && urb->actual_length > 0) {
2511 hdev->stat.byte_rx += urb->actual_length;
2512
2513 /* WMT event shouldn't be fragmented and the size should be
2514 * less than HCI_WMT_MAX_EVENT_SIZE.
2515 */
2516 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
2517 if (!skb) {
2518 hdev->stat.err_rx++;
2519 kfree(urb->setup_packet);
2520 return;
2521 }
2522
2523 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2524 skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
2525
2526 /* When someone waits for the WMT event, the skb is being cloned
2527 * and being processed the events from there then.
2528 */
2529 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
2530 data->evt_skb = skb_clone(skb, GFP_ATOMIC);
2531 if (!data->evt_skb) {
2532 kfree_skb(skb);
2533 kfree(urb->setup_packet);
2534 return;
2535 }
2536 }
2537
2538 err = hci_recv_frame(hdev, skb);
2539 if (err < 0) {
2540 kfree_skb(data->evt_skb);
2541 data->evt_skb = NULL;
2542 kfree(urb->setup_packet);
2543 return;
2544 }
2545
2546 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
2547 &data->flags)) {
2548 /* Barrier to sync with other CPUs */
2549 smp_mb__after_atomic();
2550 wake_up_bit(&data->flags,
2551 BTUSB_TX_WAIT_VND_EVT);
2552 }
2553 kfree(urb->setup_packet);
2554 return;
2555 } else if (urb->status == -ENOENT) {
2556 /* Avoid suspend failed when usb_kill_urb */
2557 return;
2558 }
2559
2560 usb_mark_last_busy(data->udev);
2561
2562 /* The URB complete handler is still called with urb->actual_length = 0
2563 * when the event is not available, so we should keep re-submitting
2564 * URB until WMT event returns, Also, It's necessary to wait some time
2565 * between the two consecutive control URBs to relax the target device
2566 * to generate the event. Otherwise, the WMT event cannot return from
2567 * the device successfully.
2568 */
2569 udelay(500);
2570
2571 usb_anchor_urb(urb, &data->ctrl_anchor);
2572 err = usb_submit_urb(urb, GFP_ATOMIC);
2573 if (err < 0) {
2574 kfree(urb->setup_packet);
2575 /* -EPERM: urb is being killed;
2576 * -ENODEV: device got disconnected
2577 */
2578 if (err != -EPERM && err != -ENODEV)
2579 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
2580 urb, -err);
2581 usb_unanchor_urb(urb);
2582 }
2583}
2584
2585static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
2586{
2587 struct btusb_data *data = hci_get_drvdata(hdev);
2588 struct usb_ctrlrequest *dr;
2589 unsigned char *buf;
2590 int err, size = 64;
2591 unsigned int pipe;
2592 struct urb *urb;
2593
2594 urb = usb_alloc_urb(0, GFP_KERNEL);
2595 if (!urb)
2596 return -ENOMEM;
2597
2598 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
2599 if (!dr) {
2600 usb_free_urb(urb);
2601 return -ENOMEM;
2602 }
2603
2604 dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
2605 dr->bRequest = 1;
2606 dr->wIndex = cpu_to_le16(0);
2607 dr->wValue = cpu_to_le16(48);
2608 dr->wLength = cpu_to_le16(size);
2609
2610 buf = kmalloc(size, GFP_KERNEL);
2611 if (!buf) {
2612 kfree(dr);
2613 usb_free_urb(urb);
2614 return -ENOMEM;
2615 }
2616
2617 pipe = usb_rcvctrlpipe(data->udev, 0);
2618
2619 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
2620 buf, size, btusb_mtk_wmt_recv, hdev);
2621
2622 urb->transfer_flags |= URB_FREE_BUFFER;
2623
2624 usb_anchor_urb(urb, &data->ctrl_anchor);
2625 err = usb_submit_urb(urb, GFP_KERNEL);
2626 if (err < 0) {
2627 if (err != -EPERM && err != -ENODEV)
2628 bt_dev_err(hdev, "urb %p submission failed (%d)",
2629 urb, -err);
2630 usb_unanchor_urb(urb);
2631 }
2632
2633 usb_free_urb(urb);
2634
2635 return err;
2636}
2637
2638static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
2639 struct btmtk_hci_wmt_params *wmt_params)
2640{
2641 struct btusb_data *data = hci_get_drvdata(hdev);
2642 struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
2643 u32 hlen, status = BTMTK_WMT_INVALID;
2644 struct btmtk_hci_wmt_evt *wmt_evt;
2645 struct btmtk_hci_wmt_cmd *wc;
2646 struct btmtk_wmt_hdr *hdr;
2647 int err;
2648
2649 /* Send the WMT command and wait until the WMT event returns */
2650 hlen = sizeof(*hdr) + wmt_params->dlen;
2651 if (hlen > 255)
2652 return -EINVAL;
2653
2654 wc = kzalloc(hlen, GFP_KERNEL);
2655 if (!wc)
2656 return -ENOMEM;
2657
2658 hdr = &wc->hdr;
2659 hdr->dir = 1;
2660 hdr->op = wmt_params->op;
2661 hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
2662 hdr->flag = wmt_params->flag;
2663 memcpy(wc->data, wmt_params->data, wmt_params->dlen);
2664
2665 set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2666
2667 /* WMT cmd/event doesn't follow up the generic HCI cmd/event handling,
2668 * it needs constantly polling control pipe until the host received the
2669 * WMT event, thus, we should require to specifically acquire PM counter
2670 * on the USB to prevent the interface from entering auto suspended
2671 * while WMT cmd/event in progress.
2672 */
2673 err = usb_autopm_get_interface(data->intf);
2674 if (err < 0)
2675 goto err_free_wc;
2676
2677 err = __hci_cmd_send(hdev, 0xfc6f, hlen, wc);
2678
2679 if (err < 0) {
2680 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2681 usb_autopm_put_interface(data->intf);
2682 goto err_free_wc;
2683 }
2684
2685 /* Submit control IN URB on demand to process the WMT event */
2686 err = btusb_mtk_submit_wmt_recv_urb(hdev);
2687
2688 usb_autopm_put_interface(data->intf);
2689
2690 if (err < 0)
2691 goto err_free_wc;
2692
2693 /* The vendor specific WMT commands are all answered by a vendor
2694 * specific event and will have the Command Status or Command
2695 * Complete as with usual HCI command flow control.
2696 *
2697 * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
2698 * state to be cleared. The driver specific event receive routine
2699 * will clear that state and with that indicate completion of the
2700 * WMT command.
2701 */
2702 err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
2703 TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
2704 if (err == -EINTR) {
2705 bt_dev_err(hdev, "Execution of wmt command interrupted");
2706 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2707 goto err_free_wc;
2708 }
2709
2710 if (err) {
2711 bt_dev_err(hdev, "Execution of wmt command timed out");
2712 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2713 err = -ETIMEDOUT;
2714 goto err_free_wc;
2715 }
2716
2717 /* Parse and handle the return WMT event */
2718 wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
2719 if (wmt_evt->whdr.op != hdr->op) {
2720 bt_dev_err(hdev, "Wrong op received %d expected %d",
2721 wmt_evt->whdr.op, hdr->op);
2722 err = -EIO;
2723 goto err_free_skb;
2724 }
2725
2726 switch (wmt_evt->whdr.op) {
2727 case BTMTK_WMT_SEMAPHORE:
2728 if (wmt_evt->whdr.flag == 2)
2729 status = BTMTK_WMT_PATCH_UNDONE;
2730 else
2731 status = BTMTK_WMT_PATCH_DONE;
2732 break;
2733 case BTMTK_WMT_FUNC_CTRL:
2734 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
2735 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
2736 status = BTMTK_WMT_ON_DONE;
2737 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
2738 status = BTMTK_WMT_ON_PROGRESS;
2739 else
2740 status = BTMTK_WMT_ON_UNDONE;
2741 break;
2742 case BTMTK_WMT_PATCH_DWNLD:
2743 if (wmt_evt->whdr.flag == 2)
2744 status = BTMTK_WMT_PATCH_DONE;
2745 else if (wmt_evt->whdr.flag == 1)
2746 status = BTMTK_WMT_PATCH_PROGRESS;
2747 else
2748 status = BTMTK_WMT_PATCH_UNDONE;
2749 break;
2750 }
2751
2752 if (wmt_params->status)
2753 *wmt_params->status = status;
2754
2755err_free_skb:
2756 kfree_skb(data->evt_skb);
2757 data->evt_skb = NULL;
2758err_free_wc:
2759 kfree(wc);
2760 return err;
2761}
2762
2763static int btusb_mtk_func_query(struct hci_dev *hdev)
2764{
2765 struct btmtk_hci_wmt_params wmt_params;
2766 int status, err;
2767 u8 param = 0;
2768
2769 /* Query whether the function is enabled */
2770 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2771 wmt_params.flag = 4;
2772 wmt_params.dlen = sizeof(param);
2773 wmt_params.data = ¶m;
2774 wmt_params.status = &status;
2775
2776 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2777 if (err < 0) {
2778 bt_dev_err(hdev, "Failed to query function status (%d)", err);
2779 return err;
2780 }
2781
2782 return status;
2783}
2784
2785static int btusb_mtk_uhw_reg_write(struct btusb_data *data, u32 reg, u32 val)
2786{
2787 struct hci_dev *hdev = data->hdev;
2788 int pipe, err;
2789 void *buf;
2790
2791 buf = kzalloc(4, GFP_KERNEL);
2792 if (!buf)
2793 return -ENOMEM;
2794
2795 put_unaligned_le32(val, buf);
2796
2797 pipe = usb_sndctrlpipe(data->udev, 0);
2798 err = usb_control_msg(data->udev, pipe, 0x02,
2799 0x5E,
2800 reg >> 16, reg & 0xffff,
2801 buf, 4, USB_CTRL_SET_TIMEOUT);
2802 if (err < 0) {
2803 bt_dev_err(hdev, "Failed to write uhw reg(%d)", err);
2804 goto err_free_buf;
2805 }
2806
2807err_free_buf:
2808 kfree(buf);
2809
2810 return err;
2811}
2812
2813static int btusb_mtk_uhw_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2814{
2815 struct hci_dev *hdev = data->hdev;
2816 int pipe, err;
2817 void *buf;
2818
2819 buf = kzalloc(4, GFP_KERNEL);
2820 if (!buf)
2821 return -ENOMEM;
2822
2823 pipe = usb_rcvctrlpipe(data->udev, 0);
2824 err = usb_control_msg(data->udev, pipe, 0x01,
2825 0xDE,
2826 reg >> 16, reg & 0xffff,
2827 buf, 4, USB_CTRL_SET_TIMEOUT);
2828 if (err < 0) {
2829 bt_dev_err(hdev, "Failed to read uhw reg(%d)", err);
2830 goto err_free_buf;
2831 }
2832
2833 *val = get_unaligned_le32(buf);
2834 bt_dev_dbg(hdev, "reg=%x, value=0x%08x", reg, *val);
2835
2836err_free_buf:
2837 kfree(buf);
2838
2839 return err;
2840}
2841
2842static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2843{
2844 int pipe, err, size = sizeof(u32);
2845 void *buf;
2846
2847 buf = kzalloc(size, GFP_KERNEL);
2848 if (!buf)
2849 return -ENOMEM;
2850
2851 pipe = usb_rcvctrlpipe(data->udev, 0);
2852 err = usb_control_msg(data->udev, pipe, 0x63,
2853 USB_TYPE_VENDOR | USB_DIR_IN,
2854 reg >> 16, reg & 0xffff,
2855 buf, size, USB_CTRL_SET_TIMEOUT);
2856 if (err < 0)
2857 goto err_free_buf;
2858
2859 *val = get_unaligned_le32(buf);
2860
2861err_free_buf:
2862 kfree(buf);
2863
2864 return err;
2865}
2866
2867static int btusb_mtk_id_get(struct btusb_data *data, u32 reg, u32 *id)
2868{
2869 return btusb_mtk_reg_read(data, reg, id);
2870}
2871
2872static int btusb_mtk_setup(struct hci_dev *hdev)
2873{
2874 struct btusb_data *data = hci_get_drvdata(hdev);
2875 struct btmtk_hci_wmt_params wmt_params;
2876 ktime_t calltime, delta, rettime;
2877 struct btmtk_tci_sleep tci_sleep;
2878 unsigned long long duration;
2879 struct sk_buff *skb;
2880 const char *fwname;
2881 int err, status;
2882 u32 dev_id;
2883 char fw_bin_name[64];
2884 u32 fw_version = 0;
2885 u8 param;
2886
2887 calltime = ktime_get();
2888
2889 err = btusb_mtk_id_get(data, 0x80000008, &dev_id);
2890 if (err < 0) {
2891 bt_dev_err(hdev, "Failed to get device id (%d)", err);
2892 return err;
2893 }
2894
2895 if (!dev_id) {
2896 err = btusb_mtk_id_get(data, 0x70010200, &dev_id);
2897 if (err < 0) {
2898 bt_dev_err(hdev, "Failed to get device id (%d)", err);
2899 return err;
2900 }
2901 err = btusb_mtk_id_get(data, 0x80021004, &fw_version);
2902 if (err < 0) {
2903 bt_dev_err(hdev, "Failed to get fw version (%d)", err);
2904 return err;
2905 }
2906 }
2907
2908 switch (dev_id) {
2909 case 0x7663:
2910 fwname = FIRMWARE_MT7663;
2911 break;
2912 case 0x7668:
2913 fwname = FIRMWARE_MT7668;
2914 break;
2915 case 0x7922:
2916 case 0x7961:
2917 snprintf(fw_bin_name, sizeof(fw_bin_name),
2918 "mediatek/BT_RAM_CODE_MT%04x_1_%x_hdr.bin",
2919 dev_id & 0xffff, (fw_version & 0xff) + 1);
2920 err = btmtk_setup_firmware_79xx(hdev, fw_bin_name,
2921 btusb_mtk_hci_wmt_sync);
2922 if (err < 0) {
2923 bt_dev_err(hdev, "Failed to set up firmware (%d)", err);
2924 return err;
2925 }
2926
2927 /* It's Device EndPoint Reset Option Register */
2928 btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT);
2929
2930 /* Enable Bluetooth protocol */
2931 param = 1;
2932 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2933 wmt_params.flag = 0;
2934 wmt_params.dlen = sizeof(param);
2935 wmt_params.data = ¶m;
2936 wmt_params.status = NULL;
2937
2938 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2939 if (err < 0) {
2940 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
2941 return err;
2942 }
2943
2944 hci_set_msft_opcode(hdev, 0xFD30);
2945 hci_set_aosp_capable(hdev);
2946 goto done;
2947 default:
2948 bt_dev_err(hdev, "Unsupported hardware variant (%08x)",
2949 dev_id);
2950 return -ENODEV;
2951 }
2952
2953 /* Query whether the firmware is already download */
2954 wmt_params.op = BTMTK_WMT_SEMAPHORE;
2955 wmt_params.flag = 1;
2956 wmt_params.dlen = 0;
2957 wmt_params.data = NULL;
2958 wmt_params.status = &status;
2959
2960 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2961 if (err < 0) {
2962 bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
2963 return err;
2964 }
2965
2966 if (status == BTMTK_WMT_PATCH_DONE) {
2967 bt_dev_info(hdev, "firmware already downloaded");
2968 goto ignore_setup_fw;
2969 }
2970
2971 /* Setup a firmware which the device definitely requires */
2972 err = btmtk_setup_firmware(hdev, fwname,
2973 btusb_mtk_hci_wmt_sync);
2974 if (err < 0)
2975 return err;
2976
2977ignore_setup_fw:
2978 err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
2979 status < 0 || status != BTMTK_WMT_ON_PROGRESS,
2980 2000, 5000000);
2981 /* -ETIMEDOUT happens */
2982 if (err < 0)
2983 return err;
2984
2985 /* The other errors happen in btusb_mtk_func_query */
2986 if (status < 0)
2987 return status;
2988
2989 if (status == BTMTK_WMT_ON_DONE) {
2990 bt_dev_info(hdev, "function already on");
2991 goto ignore_func_on;
2992 }
2993
2994 /* Enable Bluetooth protocol */
2995 param = 1;
2996 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2997 wmt_params.flag = 0;
2998 wmt_params.dlen = sizeof(param);
2999 wmt_params.data = ¶m;
3000 wmt_params.status = NULL;
3001
3002 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3003 if (err < 0) {
3004 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3005 return err;
3006 }
3007
3008ignore_func_on:
3009 /* Apply the low power environment setup */
3010 tci_sleep.mode = 0x5;
3011 tci_sleep.duration = cpu_to_le16(0x640);
3012 tci_sleep.host_duration = cpu_to_le16(0x640);
3013 tci_sleep.host_wakeup_pin = 0;
3014 tci_sleep.time_compensation = 0;
3015
3016 skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
3017 HCI_INIT_TIMEOUT);
3018 if (IS_ERR(skb)) {
3019 err = PTR_ERR(skb);
3020 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
3021 return err;
3022 }
3023 kfree_skb(skb);
3024
3025done:
3026 rettime = ktime_get();
3027 delta = ktime_sub(rettime, calltime);
3028 duration = (unsigned long long)ktime_to_ns(delta) >> 10;
3029
3030 bt_dev_info(hdev, "Device setup in %llu usecs", duration);
3031
3032 return 0;
3033}
3034
3035static int btusb_mtk_shutdown(struct hci_dev *hdev)
3036{
3037 struct btmtk_hci_wmt_params wmt_params;
3038 u8 param = 0;
3039 int err;
3040
3041 /* Disable the device */
3042 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3043 wmt_params.flag = 0;
3044 wmt_params.dlen = sizeof(param);
3045 wmt_params.data = ¶m;
3046 wmt_params.status = NULL;
3047
3048 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3049 if (err < 0) {
3050 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3051 return err;
3052 }
3053
3054 return 0;
3055}
3056
3057static void btusb_mtk_cmd_timeout(struct hci_dev *hdev)
3058{
3059 struct btusb_data *data = hci_get_drvdata(hdev);
3060 u32 val;
3061 int err, retry = 0;
3062
3063 /* It's MediaTek specific bluetooth reset mechanism via USB */
3064 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
3065 bt_dev_err(hdev, "last reset failed? Not resetting again");
3066 return;
3067 }
3068
3069 err = usb_autopm_get_interface(data->intf);
3070 if (err < 0)
3071 return;
3072
3073 btusb_stop_traffic(data);
3074 usb_kill_anchored_urbs(&data->tx_anchor);
3075
3076 /* It's Device EndPoint Reset Option Register */
3077 bt_dev_dbg(hdev, "Initiating reset mechanism via uhw");
3078 btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT);
3079 btusb_mtk_uhw_reg_read(data, MTK_BT_WDT_STATUS, &val);
3080
3081 /* Reset the bluetooth chip via USB interface. */
3082 btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 1);
3083 btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT, 0x000000FF);
3084 btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT, &val);
3085 btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT1, 0x000000FF);
3086 btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT1, &val);
3087 /* MT7921 need to delay 20ms between toggle reset bit */
3088 msleep(20);
3089 btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 0);
3090 btusb_mtk_uhw_reg_read(data, MTK_BT_SUBSYS_RST, &val);
3091
3092 /* Poll the register until reset is completed */
3093 do {
3094 btusb_mtk_uhw_reg_read(data, MTK_BT_MISC, &val);
3095 if (val & MTK_BT_RST_DONE) {
3096 bt_dev_dbg(hdev, "Bluetooth Reset Successfully");
3097 break;
3098 }
3099
3100 bt_dev_dbg(hdev, "Polling Bluetooth Reset CR");
3101 retry++;
3102 msleep(MTK_BT_RESET_WAIT_MS);
3103 } while (retry < MTK_BT_RESET_NUM_TRIES);
3104
3105 btusb_mtk_id_get(data, 0x70010200, &val);
3106 if (!val)
3107 bt_dev_err(hdev, "Can't get device id, subsys reset fail.");
3108
3109 usb_queue_reset_device(data->intf);
3110
3111 clear_bit(BTUSB_HW_RESET_ACTIVE, &data->flags);
3112}
3113
3114static int btusb_recv_acl_mtk(struct hci_dev *hdev, struct sk_buff *skb)
3115{
3116 struct btusb_data *data = hci_get_drvdata(hdev);
3117 u16 handle = le16_to_cpu(hci_acl_hdr(skb)->handle);
3118
3119 switch (handle) {
3120 case 0xfc6f: /* Firmware dump from device */
3121 /* When the firmware hangs, the device can no longer
3122 * suspend and thus disable auto-suspend.
3123 */
3124 usb_disable_autosuspend(data->udev);
3125 fallthrough;
3126 case 0x05ff: /* Firmware debug logging 1 */
3127 case 0x05fe: /* Firmware debug logging 2 */
3128 return hci_recv_diag(hdev, skb);
3129 }
3130
3131 return hci_recv_frame(hdev, skb);
3132}
3133
3134#ifdef CONFIG_PM
3135/* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
3136static int marvell_config_oob_wake(struct hci_dev *hdev)
3137{
3138 struct sk_buff *skb;
3139 struct btusb_data *data = hci_get_drvdata(hdev);
3140 struct device *dev = &data->udev->dev;
3141 u16 pin, gap, opcode;
3142 int ret;
3143 u8 cmd[5];
3144
3145 /* Move on if no wakeup pin specified */
3146 if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
3147 of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
3148 return 0;
3149
3150 /* Vendor specific command to configure a GPIO as wake-up pin */
3151 opcode = hci_opcode_pack(0x3F, 0x59);
3152 cmd[0] = opcode & 0xFF;
3153 cmd[1] = opcode >> 8;
3154 cmd[2] = 2; /* length of parameters that follow */
3155 cmd[3] = pin;
3156 cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
3157
3158 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
3159 if (!skb) {
3160 bt_dev_err(hdev, "%s: No memory", __func__);
3161 return -ENOMEM;
3162 }
3163
3164 skb_put_data(skb, cmd, sizeof(cmd));
3165 hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
3166
3167 ret = btusb_send_frame(hdev, skb);
3168 if (ret) {
3169 bt_dev_err(hdev, "%s: configuration failed", __func__);
3170 kfree_skb(skb);
3171 return ret;
3172 }
3173
3174 return 0;
3175}
3176#endif
3177
3178static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
3179 const bdaddr_t *bdaddr)
3180{
3181 struct sk_buff *skb;
3182 u8 buf[8];
3183 long ret;
3184
3185 buf[0] = 0xfe;
3186 buf[1] = sizeof(bdaddr_t);
3187 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
3188
3189 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3190 if (IS_ERR(skb)) {
3191 ret = PTR_ERR(skb);
3192 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
3193 ret);
3194 return ret;
3195 }
3196 kfree_skb(skb);
3197
3198 return 0;
3199}
3200
3201static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3202 const bdaddr_t *bdaddr)
3203{
3204 struct sk_buff *skb;
3205 u8 buf[10];
3206 long ret;
3207
3208 buf[0] = 0x01;
3209 buf[1] = 0x01;
3210 buf[2] = 0x00;
3211 buf[3] = sizeof(bdaddr_t);
3212 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3213
3214 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3215 if (IS_ERR(skb)) {
3216 ret = PTR_ERR(skb);
3217 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3218 return ret;
3219 }
3220 kfree_skb(skb);
3221
3222 return 0;
3223}
3224
3225static int btusb_set_bdaddr_wcn6855(struct hci_dev *hdev,
3226 const bdaddr_t *bdaddr)
3227{
3228 struct sk_buff *skb;
3229 u8 buf[6];
3230 long ret;
3231
3232 memcpy(buf, bdaddr, sizeof(bdaddr_t));
3233
3234 skb = __hci_cmd_sync_ev(hdev, 0xfc14, sizeof(buf), buf,
3235 HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
3236 if (IS_ERR(skb)) {
3237 ret = PTR_ERR(skb);
3238 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3239 return ret;
3240 }
3241 kfree_skb(skb);
3242
3243 return 0;
3244}
3245
3246#define QCA_DFU_PACKET_LEN 4096
3247
3248#define QCA_GET_TARGET_VERSION 0x09
3249#define QCA_CHECK_STATUS 0x05
3250#define QCA_DFU_DOWNLOAD 0x01
3251
3252#define QCA_SYSCFG_UPDATED 0x40
3253#define QCA_PATCH_UPDATED 0x80
3254#define QCA_DFU_TIMEOUT 3000
3255#define QCA_FLAG_MULTI_NVM 0x80
3256#define QCA_BT_RESET_WAIT_MS 100
3257
3258#define WCN6855_2_0_RAM_VERSION_GF 0x400c1200
3259#define WCN6855_2_1_RAM_VERSION_GF 0x400c1211
3260
3261struct qca_version {
3262 __le32 rom_version;
3263 __le32 patch_version;
3264 __le32 ram_version;
3265 __u8 chip_id;
3266 __u8 platform_id;
3267 __le16 flag;
3268 __u8 reserved[4];
3269} __packed;
3270
3271struct qca_rampatch_version {
3272 __le16 rom_version_high;
3273 __le16 rom_version_low;
3274 __le16 patch_version;
3275} __packed;
3276
3277struct qca_device_info {
3278 u32 rom_version;
3279 u8 rampatch_hdr; /* length of header in rampatch */
3280 u8 nvm_hdr; /* length of header in NVM */
3281 u8 ver_offset; /* offset of version structure in rampatch */
3282};
3283
3284static const struct qca_device_info qca_devices_table[] = {
3285 { 0x00000100, 20, 4, 8 }, /* Rome 1.0 */
3286 { 0x00000101, 20, 4, 8 }, /* Rome 1.1 */
3287 { 0x00000200, 28, 4, 16 }, /* Rome 2.0 */
3288 { 0x00000201, 28, 4, 16 }, /* Rome 2.1 */
3289 { 0x00000300, 28, 4, 16 }, /* Rome 3.0 */
3290 { 0x00000302, 28, 4, 16 }, /* Rome 3.2 */
3291 { 0x00130100, 40, 4, 16 }, /* WCN6855 1.0 */
3292 { 0x00130200, 40, 4, 16 }, /* WCN6855 2.0 */
3293 { 0x00130201, 40, 4, 16 }, /* WCN6855 2.1 */
3294 { 0x00190200, 40, 4, 16 }, /* WCN785x 2.0 */
3295};
3296
3297static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
3298 void *data, u16 size)
3299{
3300 int pipe, err;
3301 u8 *buf;
3302
3303 buf = kmalloc(size, GFP_KERNEL);
3304 if (!buf)
3305 return -ENOMEM;
3306
3307 /* Found some of USB hosts have IOT issues with ours so that we should
3308 * not wait until HCI layer is ready.
3309 */
3310 pipe = usb_rcvctrlpipe(udev, 0);
3311 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
3312 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3313 if (err < 0) {
3314 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
3315 goto done;
3316 }
3317
3318 memcpy(data, buf, size);
3319
3320done:
3321 kfree(buf);
3322
3323 return err;
3324}
3325
3326static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
3327 const struct firmware *firmware,
3328 size_t hdr_size)
3329{
3330 struct btusb_data *btdata = hci_get_drvdata(hdev);
3331 struct usb_device *udev = btdata->udev;
3332 size_t count, size, sent = 0;
3333 int pipe, len, err;
3334 u8 *buf;
3335
3336 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
3337 if (!buf)
3338 return -ENOMEM;
3339
3340 count = firmware->size;
3341
3342 size = min_t(size_t, count, hdr_size);
3343 memcpy(buf, firmware->data, size);
3344
3345 /* USB patches should go down to controller through USB path
3346 * because binary format fits to go down through USB channel.
3347 * USB control path is for patching headers and USB bulk is for
3348 * patch body.
3349 */
3350 pipe = usb_sndctrlpipe(udev, 0);
3351 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
3352 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3353 if (err < 0) {
3354 bt_dev_err(hdev, "Failed to send headers (%d)", err);
3355 goto done;
3356 }
3357
3358 sent += size;
3359 count -= size;
3360
3361 /* ep2 need time to switch from function acl to function dfu,
3362 * so we add 20ms delay here.
3363 */
3364 msleep(20);
3365
3366 while (count) {
3367 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
3368
3369 memcpy(buf, firmware->data + sent, size);
3370
3371 pipe = usb_sndbulkpipe(udev, 0x02);
3372 err = usb_bulk_msg(udev, pipe, buf, size, &len,
3373 QCA_DFU_TIMEOUT);
3374 if (err < 0) {
3375 bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
3376 sent, firmware->size, err);
3377 break;
3378 }
3379
3380 if (size != len) {
3381 bt_dev_err(hdev, "Failed to get bulk buffer");
3382 err = -EILSEQ;
3383 break;
3384 }
3385
3386 sent += size;
3387 count -= size;
3388 }
3389
3390done:
3391 kfree(buf);
3392 return err;
3393}
3394
3395static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
3396 struct qca_version *ver,
3397 const struct qca_device_info *info)
3398{
3399 struct qca_rampatch_version *rver;
3400 const struct firmware *fw;
3401 u32 ver_rom, ver_patch, rver_rom;
3402 u16 rver_rom_low, rver_rom_high, rver_patch;
3403 char fwname[64];
3404 int err;
3405
3406 ver_rom = le32_to_cpu(ver->rom_version);
3407 ver_patch = le32_to_cpu(ver->patch_version);
3408
3409 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
3410
3411 err = request_firmware(&fw, fwname, &hdev->dev);
3412 if (err) {
3413 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
3414 fwname, err);
3415 return err;
3416 }
3417
3418 bt_dev_info(hdev, "using rampatch file: %s", fwname);
3419
3420 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
3421 rver_rom_low = le16_to_cpu(rver->rom_version_low);
3422 rver_patch = le16_to_cpu(rver->patch_version);
3423
3424 if (ver_rom & ~0xffffU) {
3425 rver_rom_high = le16_to_cpu(rver->rom_version_high);
3426 rver_rom = rver_rom_high << 16 | rver_rom_low;
3427 } else {
3428 rver_rom = rver_rom_low;
3429 }
3430
3431 bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
3432 "firmware rome 0x%x build 0x%x",
3433 rver_rom, rver_patch, ver_rom, ver_patch);
3434
3435 if (rver_rom != ver_rom || rver_patch <= ver_patch) {
3436 bt_dev_err(hdev, "rampatch file version did not match with firmware");
3437 err = -EINVAL;
3438 goto done;
3439 }
3440
3441 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
3442
3443done:
3444 release_firmware(fw);
3445
3446 return err;
3447}
3448
3449static void btusb_generate_qca_nvm_name(char *fwname, size_t max_size,
3450 const struct qca_version *ver)
3451{
3452 u32 rom_version = le32_to_cpu(ver->rom_version);
3453 u16 flag = le16_to_cpu(ver->flag);
3454
3455 if (((flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) {
3456 /* The board_id should be split into two bytes
3457 * The 1st byte is chip ID, and the 2nd byte is platform ID
3458 * For example, board ID 0x010A, 0x01 is platform ID. 0x0A is chip ID
3459 * we have several platforms, and platform IDs are continuously added
3460 * Platform ID:
3461 * 0x00 is for Mobile
3462 * 0x01 is for X86
3463 * 0x02 is for Automotive
3464 * 0x03 is for Consumer electronic
3465 */
3466 u16 board_id = (ver->chip_id << 8) + ver->platform_id;
3467 const char *variant;
3468
3469 switch (le32_to_cpu(ver->ram_version)) {
3470 case WCN6855_2_0_RAM_VERSION_GF:
3471 case WCN6855_2_1_RAM_VERSION_GF:
3472 variant = "_gf";
3473 break;
3474 default:
3475 variant = "";
3476 break;
3477 }
3478
3479 if (board_id == 0) {
3480 snprintf(fwname, max_size, "qca/nvm_usb_%08x%s.bin",
3481 rom_version, variant);
3482 } else {
3483 snprintf(fwname, max_size, "qca/nvm_usb_%08x%s_%04x.bin",
3484 rom_version, variant, board_id);
3485 }
3486 } else {
3487 snprintf(fwname, max_size, "qca/nvm_usb_%08x.bin",
3488 rom_version);
3489 }
3490
3491}
3492
3493static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
3494 struct qca_version *ver,
3495 const struct qca_device_info *info)
3496{
3497 const struct firmware *fw;
3498 char fwname[64];
3499 int err;
3500
3501 btusb_generate_qca_nvm_name(fwname, sizeof(fwname), ver);
3502
3503 err = request_firmware(&fw, fwname, &hdev->dev);
3504 if (err) {
3505 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
3506 fwname, err);
3507 return err;
3508 }
3509
3510 bt_dev_info(hdev, "using NVM file: %s", fwname);
3511
3512 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
3513
3514 release_firmware(fw);
3515
3516 return err;
3517}
3518
3519/* identify the ROM version and check whether patches are needed */
3520static bool btusb_qca_need_patch(struct usb_device *udev)
3521{
3522 struct qca_version ver;
3523
3524 if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3525 sizeof(ver)) < 0)
3526 return false;
3527 /* only low ROM versions need patches */
3528 return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
3529}
3530
3531static int btusb_setup_qca(struct hci_dev *hdev)
3532{
3533 struct btusb_data *btdata = hci_get_drvdata(hdev);
3534 struct usb_device *udev = btdata->udev;
3535 const struct qca_device_info *info = NULL;
3536 struct qca_version ver;
3537 u32 ver_rom;
3538 u8 status;
3539 int i, err;
3540
3541 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3542 sizeof(ver));
3543 if (err < 0)
3544 return err;
3545
3546 ver_rom = le32_to_cpu(ver.rom_version);
3547
3548 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
3549 if (ver_rom == qca_devices_table[i].rom_version)
3550 info = &qca_devices_table[i];
3551 }
3552 if (!info) {
3553 /* If the rom_version is not matched in the qca_devices_table
3554 * and the high ROM version is not zero, we assume this chip no
3555 * need to load the rampatch and nvm.
3556 */
3557 if (ver_rom & ~0xffffU)
3558 return 0;
3559
3560 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
3561 return -ENODEV;
3562 }
3563
3564 err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
3565 sizeof(status));
3566 if (err < 0)
3567 return err;
3568
3569 if (!(status & QCA_PATCH_UPDATED)) {
3570 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3571 if (err < 0)
3572 return err;
3573 }
3574
3575 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3576 sizeof(ver));
3577 if (err < 0)
3578 return err;
3579
3580 if (!(status & QCA_SYSCFG_UPDATED)) {
3581 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3582 if (err < 0)
3583 return err;
3584
3585 /* WCN6855 2.1 and later will reset to apply firmware downloaded here, so
3586 * wait ~100ms for reset Done then go ahead, otherwise, it maybe
3587 * cause potential enable failure.
3588 */
3589 if (info->rom_version >= 0x00130201)
3590 msleep(QCA_BT_RESET_WAIT_MS);
3591 }
3592
3593 /* Mark HCI_OP_ENHANCED_SETUP_SYNC_CONN as broken as it doesn't seem to
3594 * work with the likes of HSP/HFP mSBC.
3595 */
3596 set_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &hdev->quirks);
3597
3598 return 0;
3599}
3600
3601static inline int __set_diag_interface(struct hci_dev *hdev)
3602{
3603 struct btusb_data *data = hci_get_drvdata(hdev);
3604 struct usb_interface *intf = data->diag;
3605 int i;
3606
3607 if (!data->diag)
3608 return -ENODEV;
3609
3610 data->diag_tx_ep = NULL;
3611 data->diag_rx_ep = NULL;
3612
3613 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3614 struct usb_endpoint_descriptor *ep_desc;
3615
3616 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3617
3618 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3619 data->diag_tx_ep = ep_desc;
3620 continue;
3621 }
3622
3623 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3624 data->diag_rx_ep = ep_desc;
3625 continue;
3626 }
3627 }
3628
3629 if (!data->diag_tx_ep || !data->diag_rx_ep) {
3630 bt_dev_err(hdev, "invalid diagnostic descriptors");
3631 return -ENODEV;
3632 }
3633
3634 return 0;
3635}
3636
3637static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
3638{
3639 struct btusb_data *data = hci_get_drvdata(hdev);
3640 struct sk_buff *skb;
3641 struct urb *urb;
3642 unsigned int pipe;
3643
3644 if (!data->diag_tx_ep)
3645 return ERR_PTR(-ENODEV);
3646
3647 urb = usb_alloc_urb(0, GFP_KERNEL);
3648 if (!urb)
3649 return ERR_PTR(-ENOMEM);
3650
3651 skb = bt_skb_alloc(2, GFP_KERNEL);
3652 if (!skb) {
3653 usb_free_urb(urb);
3654 return ERR_PTR(-ENOMEM);
3655 }
3656
3657 skb_put_u8(skb, 0xf0);
3658 skb_put_u8(skb, enable);
3659
3660 pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
3661
3662 usb_fill_bulk_urb(urb, data->udev, pipe,
3663 skb->data, skb->len, btusb_tx_complete, skb);
3664
3665 skb->dev = (void *)hdev;
3666
3667 return urb;
3668}
3669
3670static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
3671{
3672 struct btusb_data *data = hci_get_drvdata(hdev);
3673 struct urb *urb;
3674
3675 if (!data->diag)
3676 return -ENODEV;
3677
3678 if (!test_bit(HCI_RUNNING, &hdev->flags))
3679 return -ENETDOWN;
3680
3681 urb = alloc_diag_urb(hdev, enable);
3682 if (IS_ERR(urb))
3683 return PTR_ERR(urb);
3684
3685 return submit_or_queue_tx_urb(hdev, urb);
3686}
3687
3688#ifdef CONFIG_PM
3689static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
3690{
3691 struct btusb_data *data = priv;
3692
3693 pm_wakeup_event(&data->udev->dev, 0);
3694 pm_system_wakeup();
3695
3696 /* Disable only if not already disabled (keep it balanced) */
3697 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3698 disable_irq_nosync(irq);
3699 disable_irq_wake(irq);
3700 }
3701 return IRQ_HANDLED;
3702}
3703
3704static const struct of_device_id btusb_match_table[] = {
3705 { .compatible = "usb1286,204e" },
3706 { .compatible = "usbcf3,e300" }, /* QCA6174A */
3707 { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
3708 { }
3709};
3710MODULE_DEVICE_TABLE(of, btusb_match_table);
3711
3712/* Use an oob wakeup pin? */
3713static int btusb_config_oob_wake(struct hci_dev *hdev)
3714{
3715 struct btusb_data *data = hci_get_drvdata(hdev);
3716 struct device *dev = &data->udev->dev;
3717 int irq, ret;
3718
3719 clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3720
3721 if (!of_match_device(btusb_match_table, dev))
3722 return 0;
3723
3724 /* Move on if no IRQ specified */
3725 irq = of_irq_get_byname(dev->of_node, "wakeup");
3726 if (irq <= 0) {
3727 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
3728 return 0;
3729 }
3730
3731 irq_set_status_flags(irq, IRQ_NOAUTOEN);
3732 ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
3733 0, "OOB Wake-on-BT", data);
3734 if (ret) {
3735 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
3736 return ret;
3737 }
3738
3739 ret = device_init_wakeup(dev, true);
3740 if (ret) {
3741 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
3742 return ret;
3743 }
3744
3745 data->oob_wake_irq = irq;
3746 bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
3747 return 0;
3748}
3749#endif
3750
3751static void btusb_check_needs_reset_resume(struct usb_interface *intf)
3752{
3753 if (dmi_check_system(btusb_needs_reset_resume_table))
3754 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3755}
3756
3757static bool btusb_wakeup(struct hci_dev *hdev)
3758{
3759 struct btusb_data *data = hci_get_drvdata(hdev);
3760
3761 return device_may_wakeup(&data->udev->dev);
3762}
3763
3764static int btusb_shutdown_qca(struct hci_dev *hdev)
3765{
3766 struct sk_buff *skb;
3767
3768 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
3769 if (IS_ERR(skb)) {
3770 bt_dev_err(hdev, "HCI reset during shutdown failed");
3771 return PTR_ERR(skb);
3772 }
3773 kfree_skb(skb);
3774
3775 return 0;
3776}
3777
3778static ssize_t force_poll_sync_read(struct file *file, char __user *user_buf,
3779 size_t count, loff_t *ppos)
3780{
3781 struct btusb_data *data = file->private_data;
3782 char buf[3];
3783
3784 buf[0] = data->poll_sync ? 'Y' : 'N';
3785 buf[1] = '\n';
3786 buf[2] = '\0';
3787 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
3788}
3789
3790static ssize_t force_poll_sync_write(struct file *file,
3791 const char __user *user_buf,
3792 size_t count, loff_t *ppos)
3793{
3794 struct btusb_data *data = file->private_data;
3795 bool enable;
3796 int err;
3797
3798 err = kstrtobool_from_user(user_buf, count, &enable);
3799 if (err)
3800 return err;
3801
3802 /* Only allow changes while the adapter is down */
3803 if (test_bit(HCI_UP, &data->hdev->flags))
3804 return -EPERM;
3805
3806 if (data->poll_sync == enable)
3807 return -EALREADY;
3808
3809 data->poll_sync = enable;
3810
3811 return count;
3812}
3813
3814static const struct file_operations force_poll_sync_fops = {
3815 .open = simple_open,
3816 .read = force_poll_sync_read,
3817 .write = force_poll_sync_write,
3818 .llseek = default_llseek,
3819};
3820
3821static int btusb_probe(struct usb_interface *intf,
3822 const struct usb_device_id *id)
3823{
3824 struct usb_endpoint_descriptor *ep_desc;
3825 struct gpio_desc *reset_gpio;
3826 struct btusb_data *data;
3827 struct hci_dev *hdev;
3828 unsigned ifnum_base;
3829 int i, err, priv_size;
3830
3831 BT_DBG("intf %p id %p", intf, id);
3832
3833 /* interface numbers are hardcoded in the spec */
3834 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
3835 if (!(id->driver_info & BTUSB_IFNUM_2))
3836 return -ENODEV;
3837 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
3838 return -ENODEV;
3839 }
3840
3841 ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
3842
3843 if (!id->driver_info) {
3844 const struct usb_device_id *match;
3845
3846 match = usb_match_id(intf, blacklist_table);
3847 if (match)
3848 id = match;
3849 }
3850
3851 if (id->driver_info == BTUSB_IGNORE)
3852 return -ENODEV;
3853
3854 if (id->driver_info & BTUSB_ATH3012) {
3855 struct usb_device *udev = interface_to_usbdev(intf);
3856
3857 /* Old firmware would otherwise let ath3k driver load
3858 * patch and sysconfig files
3859 */
3860 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
3861 !btusb_qca_need_patch(udev))
3862 return -ENODEV;
3863 }
3864
3865 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
3866 if (!data)
3867 return -ENOMEM;
3868
3869 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3870 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3871
3872 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
3873 data->intr_ep = ep_desc;
3874 continue;
3875 }
3876
3877 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3878 data->bulk_tx_ep = ep_desc;
3879 continue;
3880 }
3881
3882 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3883 data->bulk_rx_ep = ep_desc;
3884 continue;
3885 }
3886 }
3887
3888 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
3889 return -ENODEV;
3890
3891 if (id->driver_info & BTUSB_AMP) {
3892 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
3893 data->cmdreq = 0x2b;
3894 } else {
3895 data->cmdreq_type = USB_TYPE_CLASS;
3896 data->cmdreq = 0x00;
3897 }
3898
3899 data->udev = interface_to_usbdev(intf);
3900 data->intf = intf;
3901
3902 INIT_WORK(&data->work, btusb_work);
3903 INIT_WORK(&data->waker, btusb_waker);
3904 INIT_DELAYED_WORK(&data->rx_work, btusb_rx_work);
3905
3906 skb_queue_head_init(&data->acl_q);
3907
3908 init_usb_anchor(&data->deferred);
3909 init_usb_anchor(&data->tx_anchor);
3910 spin_lock_init(&data->txlock);
3911
3912 init_usb_anchor(&data->intr_anchor);
3913 init_usb_anchor(&data->bulk_anchor);
3914 init_usb_anchor(&data->isoc_anchor);
3915 init_usb_anchor(&data->diag_anchor);
3916 init_usb_anchor(&data->ctrl_anchor);
3917 spin_lock_init(&data->rxlock);
3918
3919 priv_size = 0;
3920
3921 data->recv_event = hci_recv_frame;
3922 data->recv_bulk = btusb_recv_bulk;
3923
3924 if (id->driver_info & BTUSB_INTEL_COMBINED) {
3925 /* Allocate extra space for Intel device */
3926 priv_size += sizeof(struct btintel_data);
3927
3928 /* Override the rx handlers */
3929 data->recv_event = btusb_recv_event_intel;
3930 data->recv_bulk = btusb_recv_bulk_intel;
3931 } else if (id->driver_info & BTUSB_REALTEK) {
3932 /* Allocate extra space for Realtek device */
3933 priv_size += sizeof(struct btrealtek_data);
3934 }
3935
3936 data->recv_acl = hci_recv_frame;
3937
3938 hdev = hci_alloc_dev_priv(priv_size);
3939 if (!hdev)
3940 return -ENOMEM;
3941
3942 hdev->bus = HCI_USB;
3943 hci_set_drvdata(hdev, data);
3944
3945 if (id->driver_info & BTUSB_AMP)
3946 hdev->dev_type = HCI_AMP;
3947 else
3948 hdev->dev_type = HCI_PRIMARY;
3949
3950 data->hdev = hdev;
3951
3952 SET_HCIDEV_DEV(hdev, &intf->dev);
3953
3954 reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
3955 GPIOD_OUT_LOW);
3956 if (IS_ERR(reset_gpio)) {
3957 err = PTR_ERR(reset_gpio);
3958 goto out_free_dev;
3959 } else if (reset_gpio) {
3960 data->reset_gpio = reset_gpio;
3961 }
3962
3963 hdev->open = btusb_open;
3964 hdev->close = btusb_close;
3965 hdev->flush = btusb_flush;
3966 hdev->send = btusb_send_frame;
3967 hdev->notify = btusb_notify;
3968 hdev->wakeup = btusb_wakeup;
3969
3970#ifdef CONFIG_PM
3971 err = btusb_config_oob_wake(hdev);
3972 if (err)
3973 goto out_free_dev;
3974
3975 /* Marvell devices may need a specific chip configuration */
3976 if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
3977 err = marvell_config_oob_wake(hdev);
3978 if (err)
3979 goto out_free_dev;
3980 }
3981#endif
3982 if (id->driver_info & BTUSB_CW6622)
3983 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3984
3985 if (id->driver_info & BTUSB_BCM2045)
3986 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3987
3988 if (id->driver_info & BTUSB_BCM92035)
3989 hdev->setup = btusb_setup_bcm92035;
3990
3991 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
3992 (id->driver_info & BTUSB_BCM_PATCHRAM)) {
3993 hdev->manufacturer = 15;
3994 hdev->setup = btbcm_setup_patchram;
3995 hdev->set_diag = btusb_bcm_set_diag;
3996 hdev->set_bdaddr = btbcm_set_bdaddr;
3997
3998 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3999 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4000 }
4001
4002 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
4003 (id->driver_info & BTUSB_BCM_APPLE)) {
4004 hdev->manufacturer = 15;
4005 hdev->setup = btbcm_setup_apple;
4006 hdev->set_diag = btusb_bcm_set_diag;
4007
4008 /* Broadcom LM_DIAG Interface numbers are hardcoded */
4009 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4010 }
4011
4012 /* Combined Intel Device setup to support multiple setup routine */
4013 if (id->driver_info & BTUSB_INTEL_COMBINED) {
4014 err = btintel_configure_setup(hdev);
4015 if (err)
4016 goto out_free_dev;
4017
4018 /* Transport specific configuration */
4019 hdev->send = btusb_send_frame_intel;
4020 hdev->cmd_timeout = btusb_intel_cmd_timeout;
4021
4022 if (id->driver_info & BTUSB_INTEL_NO_WBS_SUPPORT)
4023 btintel_set_flag(hdev, INTEL_ROM_LEGACY_NO_WBS_SUPPORT);
4024
4025 if (id->driver_info & BTUSB_INTEL_BROKEN_INITIAL_NCMD)
4026 btintel_set_flag(hdev, INTEL_BROKEN_INITIAL_NCMD);
4027
4028 if (id->driver_info & BTUSB_INTEL_BROKEN_SHUTDOWN_LED)
4029 btintel_set_flag(hdev, INTEL_BROKEN_SHUTDOWN_LED);
4030 }
4031
4032 if (id->driver_info & BTUSB_MARVELL)
4033 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
4034
4035 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) &&
4036 (id->driver_info & BTUSB_MEDIATEK)) {
4037 hdev->setup = btusb_mtk_setup;
4038 hdev->shutdown = btusb_mtk_shutdown;
4039 hdev->manufacturer = 70;
4040 hdev->cmd_timeout = btusb_mtk_cmd_timeout;
4041 hdev->set_bdaddr = btmtk_set_bdaddr;
4042 set_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &hdev->quirks);
4043 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
4044 data->recv_acl = btusb_recv_acl_mtk;
4045 }
4046
4047 if (id->driver_info & BTUSB_SWAVE) {
4048 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
4049 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
4050 }
4051
4052 if (id->driver_info & BTUSB_INTEL_BOOT) {
4053 hdev->manufacturer = 2;
4054 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4055 }
4056
4057 if (id->driver_info & BTUSB_ATH3012) {
4058 data->setup_on_usb = btusb_setup_qca;
4059 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4060 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4061 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4062 }
4063
4064 if (id->driver_info & BTUSB_QCA_ROME) {
4065 data->setup_on_usb = btusb_setup_qca;
4066 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4067 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4068 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4069 btusb_check_needs_reset_resume(intf);
4070 }
4071
4072 if (id->driver_info & BTUSB_QCA_WCN6855) {
4073 data->setup_on_usb = btusb_setup_qca;
4074 hdev->shutdown = btusb_shutdown_qca;
4075 hdev->set_bdaddr = btusb_set_bdaddr_wcn6855;
4076 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4077 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4078 hci_set_msft_opcode(hdev, 0xFD70);
4079 }
4080
4081 if (id->driver_info & BTUSB_AMP) {
4082 /* AMP controllers do not support SCO packets */
4083 data->isoc = NULL;
4084 } else {
4085 /* Interface orders are hardcoded in the specification */
4086 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
4087 data->isoc_ifnum = ifnum_base + 1;
4088 }
4089
4090 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) &&
4091 (id->driver_info & BTUSB_REALTEK)) {
4092 hdev->setup = btusb_setup_realtek;
4093 hdev->shutdown = btrtl_shutdown_realtek;
4094 hdev->cmd_timeout = btusb_rtl_cmd_timeout;
4095
4096 /* Realtek devices need to set remote wakeup on auto-suspend */
4097 set_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags);
4098 set_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags);
4099 }
4100
4101 if (!reset)
4102 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4103
4104 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
4105 if (!disable_scofix)
4106 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
4107 }
4108
4109 if (id->driver_info & BTUSB_BROKEN_ISOC)
4110 data->isoc = NULL;
4111
4112 if (id->driver_info & BTUSB_WIDEBAND_SPEECH)
4113 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
4114
4115 if (id->driver_info & BTUSB_VALID_LE_STATES)
4116 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
4117
4118 if (id->driver_info & BTUSB_DIGIANSWER) {
4119 data->cmdreq_type = USB_TYPE_VENDOR;
4120 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4121 }
4122
4123 if (id->driver_info & BTUSB_CSR) {
4124 struct usb_device *udev = data->udev;
4125 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
4126
4127 /* Old firmware would otherwise execute USB reset */
4128 if (bcdDevice < 0x117)
4129 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4130
4131 /* This must be set first in case we disable it for fakes */
4132 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4133
4134 /* Fake CSR devices with broken commands */
4135 if (le16_to_cpu(udev->descriptor.idVendor) == 0x0a12 &&
4136 le16_to_cpu(udev->descriptor.idProduct) == 0x0001)
4137 hdev->setup = btusb_setup_csr;
4138 }
4139
4140 if (id->driver_info & BTUSB_SNIFFER) {
4141 struct usb_device *udev = data->udev;
4142
4143 /* New sniffer firmware has crippled HCI interface */
4144 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
4145 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4146 }
4147
4148 if (id->driver_info & BTUSB_INTEL_BOOT) {
4149 /* A bug in the bootloader causes that interrupt interface is
4150 * only enabled after receiving SetInterface(0, AltSetting=0).
4151 */
4152 err = usb_set_interface(data->udev, 0, 0);
4153 if (err < 0) {
4154 BT_ERR("failed to set interface 0, alt 0 %d", err);
4155 goto out_free_dev;
4156 }
4157 }
4158
4159 if (data->isoc) {
4160 err = usb_driver_claim_interface(&btusb_driver,
4161 data->isoc, data);
4162 if (err < 0)
4163 goto out_free_dev;
4164 }
4165
4166 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) {
4167 if (!usb_driver_claim_interface(&btusb_driver,
4168 data->diag, data))
4169 __set_diag_interface(hdev);
4170 else
4171 data->diag = NULL;
4172 }
4173
4174 if (enable_autosuspend)
4175 usb_enable_autosuspend(data->udev);
4176
4177 data->poll_sync = enable_poll_sync;
4178
4179 err = hci_register_dev(hdev);
4180 if (err < 0)
4181 goto out_free_dev;
4182
4183 usb_set_intfdata(intf, data);
4184
4185 debugfs_create_file("force_poll_sync", 0644, hdev->debugfs, data,
4186 &force_poll_sync_fops);
4187
4188 return 0;
4189
4190out_free_dev:
4191 if (data->reset_gpio)
4192 gpiod_put(data->reset_gpio);
4193 hci_free_dev(hdev);
4194 return err;
4195}
4196
4197static void btusb_disconnect(struct usb_interface *intf)
4198{
4199 struct btusb_data *data = usb_get_intfdata(intf);
4200 struct hci_dev *hdev;
4201
4202 BT_DBG("intf %p", intf);
4203
4204 if (!data)
4205 return;
4206
4207 hdev = data->hdev;
4208 usb_set_intfdata(data->intf, NULL);
4209
4210 if (data->isoc)
4211 usb_set_intfdata(data->isoc, NULL);
4212
4213 if (data->diag)
4214 usb_set_intfdata(data->diag, NULL);
4215
4216 hci_unregister_dev(hdev);
4217
4218 if (intf == data->intf) {
4219 if (data->isoc)
4220 usb_driver_release_interface(&btusb_driver, data->isoc);
4221 if (data->diag)
4222 usb_driver_release_interface(&btusb_driver, data->diag);
4223 } else if (intf == data->isoc) {
4224 if (data->diag)
4225 usb_driver_release_interface(&btusb_driver, data->diag);
4226 usb_driver_release_interface(&btusb_driver, data->intf);
4227 } else if (intf == data->diag) {
4228 usb_driver_release_interface(&btusb_driver, data->intf);
4229 if (data->isoc)
4230 usb_driver_release_interface(&btusb_driver, data->isoc);
4231 }
4232
4233 if (data->oob_wake_irq)
4234 device_init_wakeup(&data->udev->dev, false);
4235
4236 if (data->reset_gpio)
4237 gpiod_put(data->reset_gpio);
4238
4239 hci_free_dev(hdev);
4240}
4241
4242#ifdef CONFIG_PM
4243static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
4244{
4245 struct btusb_data *data = usb_get_intfdata(intf);
4246
4247 BT_DBG("intf %p", intf);
4248
4249 if (data->suspend_count++)
4250 return 0;
4251
4252 spin_lock_irq(&data->txlock);
4253 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
4254 set_bit(BTUSB_SUSPENDING, &data->flags);
4255 spin_unlock_irq(&data->txlock);
4256 } else {
4257 spin_unlock_irq(&data->txlock);
4258 data->suspend_count--;
4259 return -EBUSY;
4260 }
4261
4262 cancel_work_sync(&data->work);
4263
4264 btusb_stop_traffic(data);
4265 usb_kill_anchored_urbs(&data->tx_anchor);
4266
4267 if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
4268 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4269 enable_irq_wake(data->oob_wake_irq);
4270 enable_irq(data->oob_wake_irq);
4271 }
4272
4273 /* For global suspend, Realtek devices lose the loaded fw
4274 * in them. But for autosuspend, firmware should remain.
4275 * Actually, it depends on whether the usb host sends
4276 * set feature (enable wakeup) or not.
4277 */
4278 if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags)) {
4279 if (PMSG_IS_AUTO(message) &&
4280 device_can_wakeup(&data->udev->dev))
4281 data->udev->do_remote_wakeup = 1;
4282 else if (!PMSG_IS_AUTO(message) &&
4283 !device_may_wakeup(&data->udev->dev)) {
4284 data->udev->do_remote_wakeup = 0;
4285 data->udev->reset_resume = 1;
4286 }
4287 }
4288
4289 return 0;
4290}
4291
4292static void play_deferred(struct btusb_data *data)
4293{
4294 struct urb *urb;
4295 int err;
4296
4297 while ((urb = usb_get_from_anchor(&data->deferred))) {
4298 usb_anchor_urb(urb, &data->tx_anchor);
4299
4300 err = usb_submit_urb(urb, GFP_ATOMIC);
4301 if (err < 0) {
4302 if (err != -EPERM && err != -ENODEV)
4303 BT_ERR("%s urb %p submission failed (%d)",
4304 data->hdev->name, urb, -err);
4305 kfree(urb->setup_packet);
4306 usb_unanchor_urb(urb);
4307 usb_free_urb(urb);
4308 break;
4309 }
4310
4311 data->tx_in_flight++;
4312 usb_free_urb(urb);
4313 }
4314
4315 /* Cleanup the rest deferred urbs. */
4316 while ((urb = usb_get_from_anchor(&data->deferred))) {
4317 kfree(urb->setup_packet);
4318 usb_free_urb(urb);
4319 }
4320}
4321
4322static int btusb_resume(struct usb_interface *intf)
4323{
4324 struct btusb_data *data = usb_get_intfdata(intf);
4325 struct hci_dev *hdev = data->hdev;
4326 int err = 0;
4327
4328 BT_DBG("intf %p", intf);
4329
4330 if (--data->suspend_count)
4331 return 0;
4332
4333 /* Disable only if not already disabled (keep it balanced) */
4334 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4335 disable_irq(data->oob_wake_irq);
4336 disable_irq_wake(data->oob_wake_irq);
4337 }
4338
4339 if (!test_bit(HCI_RUNNING, &hdev->flags))
4340 goto done;
4341
4342 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4343 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4344 if (err < 0) {
4345 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
4346 goto failed;
4347 }
4348 }
4349
4350 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
4351 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
4352 if (err < 0) {
4353 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
4354 goto failed;
4355 }
4356
4357 btusb_submit_bulk_urb(hdev, GFP_NOIO);
4358 }
4359
4360 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
4361 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
4362 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
4363 else
4364 btusb_submit_isoc_urb(hdev, GFP_NOIO);
4365 }
4366
4367 spin_lock_irq(&data->txlock);
4368 play_deferred(data);
4369 clear_bit(BTUSB_SUSPENDING, &data->flags);
4370 spin_unlock_irq(&data->txlock);
4371 schedule_work(&data->work);
4372
4373 return 0;
4374
4375failed:
4376 usb_scuttle_anchored_urbs(&data->deferred);
4377done:
4378 spin_lock_irq(&data->txlock);
4379 clear_bit(BTUSB_SUSPENDING, &data->flags);
4380 spin_unlock_irq(&data->txlock);
4381
4382 return err;
4383}
4384#endif
4385
4386static struct usb_driver btusb_driver = {
4387 .name = "btusb",
4388 .probe = btusb_probe,
4389 .disconnect = btusb_disconnect,
4390#ifdef CONFIG_PM
4391 .suspend = btusb_suspend,
4392 .resume = btusb_resume,
4393#endif
4394 .id_table = btusb_table,
4395 .supports_autosuspend = 1,
4396 .disable_hub_initiated_lpm = 1,
4397};
4398
4399module_usb_driver(btusb_driver);
4400
4401module_param(disable_scofix, bool, 0644);
4402MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
4403
4404module_param(force_scofix, bool, 0644);
4405MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
4406
4407module_param(enable_autosuspend, bool, 0644);
4408MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
4409
4410module_param(reset, bool, 0644);
4411MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
4412
4413MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
4414MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
4415MODULE_VERSION(VERSION);
4416MODULE_LICENSE("GPL");
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
30static bool disable_scofix;
31static bool force_scofix;
32static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND);
33
34static bool reset = true;
35
36static 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
65static 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
175MODULE_DEVICE_TABLE(usb, btusb_table);
176
177static 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(0x0cf3, 0xe500), .driver_info = BTUSB_QCA_ROME |
274 BTUSB_WIDEBAND_SPEECH },
275 { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME |
276 BTUSB_WIDEBAND_SPEECH },
277 { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME |
278 BTUSB_WIDEBAND_SPEECH },
279 { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME |
280 BTUSB_WIDEBAND_SPEECH },
281 { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME |
282 BTUSB_WIDEBAND_SPEECH },
283 { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME |
284 BTUSB_WIDEBAND_SPEECH },
285 { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME |
286 BTUSB_WIDEBAND_SPEECH },
287 { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME |
288 BTUSB_WIDEBAND_SPEECH },
289 { USB_DEVICE(0x04ca, 0x3021), .driver_info = BTUSB_QCA_ROME |
290 BTUSB_WIDEBAND_SPEECH },
291 { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME |
292 BTUSB_WIDEBAND_SPEECH },
293 { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME |
294 BTUSB_WIDEBAND_SPEECH },
295 { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME |
296 BTUSB_WIDEBAND_SPEECH },
297
298 /* QCA WCN6855 chipset */
299 { USB_DEVICE(0x0cf3, 0xe600), .driver_info = BTUSB_QCA_WCN6855 |
300 BTUSB_WIDEBAND_SPEECH },
301
302 /* Broadcom BCM2035 */
303 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
304 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
305 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
306
307 /* Broadcom BCM2045 */
308 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
309 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
310
311 /* IBM/Lenovo ThinkPad with Broadcom chip */
312 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
313 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
314
315 /* HP laptop with Broadcom chip */
316 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
317
318 /* Dell laptop with Broadcom chip */
319 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
320
321 /* Dell Wireless 370 and 410 devices */
322 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
323 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
324
325 /* Belkin F8T012 and F8T013 devices */
326 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
327 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
328
329 /* Asus WL-BTD202 device */
330 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
331
332 /* Kensington Bluetooth USB adapter */
333 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
334
335 /* RTX Telecom based adapters with buggy SCO support */
336 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
337 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
338
339 /* CONWISE Technology based adapters with buggy SCO support */
340 { USB_DEVICE(0x0e5e, 0x6622),
341 .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
342
343 /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
344 { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
345
346 /* Digianswer devices */
347 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
348 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
349
350 /* CSR BlueCore Bluetooth Sniffer */
351 { USB_DEVICE(0x0a12, 0x0002),
352 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
353
354 /* Frontline ComProbe Bluetooth Sniffer */
355 { USB_DEVICE(0x16d3, 0x0002),
356 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
357
358 /* Marvell Bluetooth devices */
359 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
360 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
361 { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
362
363 /* Intel Bluetooth devices */
364 { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW |
365 BTUSB_WIDEBAND_SPEECH |
366 BTUSB_VALID_LE_STATES },
367 { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_NEW |
368 BTUSB_WIDEBAND_SPEECH },
369 { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_NEW |
370 BTUSB_WIDEBAND_SPEECH },
371 { USB_DEVICE(0x8087, 0x0032), .driver_info = BTUSB_INTEL_NEWGEN |
372 BTUSB_WIDEBAND_SPEECH},
373 { USB_DEVICE(0x8087, 0x0033), .driver_info = BTUSB_INTEL_NEWGEN |
374 BTUSB_WIDEBAND_SPEECH},
375 { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
376 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
377 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
378 { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW |
379 BTUSB_WIDEBAND_SPEECH },
380 { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL |
381 BTUSB_WIDEBAND_SPEECH },
382 { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW |
383 BTUSB_WIDEBAND_SPEECH |
384 BTUSB_VALID_LE_STATES },
385
386 /* Other Intel Bluetooth devices */
387 { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
388 .driver_info = BTUSB_IGNORE },
389
390 /* Realtek 8822CE Bluetooth devices */
391 { USB_DEVICE(0x0bda, 0xb00c), .driver_info = BTUSB_REALTEK |
392 BTUSB_WIDEBAND_SPEECH },
393 { USB_DEVICE(0x0bda, 0xc822), .driver_info = BTUSB_REALTEK |
394 BTUSB_WIDEBAND_SPEECH },
395
396 /* Realtek 8852AE Bluetooth devices */
397 { USB_DEVICE(0x0bda, 0xc852), .driver_info = BTUSB_REALTEK |
398 BTUSB_WIDEBAND_SPEECH },
399
400 /* Realtek Bluetooth devices */
401 { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
402 .driver_info = BTUSB_REALTEK },
403
404 /* MediaTek Bluetooth devices */
405 { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01),
406 .driver_info = BTUSB_MEDIATEK |
407 BTUSB_WIDEBAND_SPEECH |
408 BTUSB_VALID_LE_STATES },
409
410 /* Additional MediaTek MT7615E Bluetooth devices */
411 { USB_DEVICE(0x13d3, 0x3560), .driver_info = BTUSB_MEDIATEK},
412
413 /* Additional MediaTek MT7921 Bluetooth devices */
414 { USB_DEVICE(0x04ca, 0x3802), .driver_info = BTUSB_MEDIATEK |
415 BTUSB_WIDEBAND_SPEECH |
416 BTUSB_VALID_LE_STATES },
417
418 /* Additional Realtek 8723AE Bluetooth devices */
419 { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
420 { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
421
422 /* Additional Realtek 8723BE Bluetooth devices */
423 { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
424 { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
425 { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
426 { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
427 { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
428 { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
429
430 /* Additional Realtek 8723BU Bluetooth devices */
431 { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
432
433 /* Additional Realtek 8723DE Bluetooth devices */
434 { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
435 { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
436
437 /* Additional Realtek 8761BU Bluetooth devices */
438 { USB_DEVICE(0x0b05, 0x190e), .driver_info = BTUSB_REALTEK |
439 BTUSB_WIDEBAND_SPEECH },
440
441 /* Additional Realtek 8821AE Bluetooth devices */
442 { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
443 { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
444 { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
445 { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
446 { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
447
448 /* Additional Realtek 8822BE Bluetooth devices */
449 { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
450 { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
451
452 /* Additional Realtek 8822CE Bluetooth devices */
453 { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK |
454 BTUSB_WIDEBAND_SPEECH },
455 /* Bluetooth component of Realtek 8852AE device */
456 { USB_DEVICE(0x04ca, 0x4006), .driver_info = BTUSB_REALTEK |
457 BTUSB_WIDEBAND_SPEECH },
458
459 { USB_DEVICE(0x04c5, 0x161f), .driver_info = BTUSB_REALTEK |
460 BTUSB_WIDEBAND_SPEECH },
461 { USB_DEVICE(0x0b05, 0x18ef), .driver_info = BTUSB_REALTEK |
462 BTUSB_WIDEBAND_SPEECH },
463 { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK |
464 BTUSB_WIDEBAND_SPEECH },
465 { USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK |
466 BTUSB_WIDEBAND_SPEECH },
467 { USB_DEVICE(0x13d3, 0x3553), .driver_info = BTUSB_REALTEK |
468 BTUSB_WIDEBAND_SPEECH },
469 { USB_DEVICE(0x13d3, 0x3555), .driver_info = BTUSB_REALTEK |
470 BTUSB_WIDEBAND_SPEECH },
471 { USB_DEVICE(0x2ff8, 0x3051), .driver_info = BTUSB_REALTEK |
472 BTUSB_WIDEBAND_SPEECH },
473 { USB_DEVICE(0x1358, 0xc123), .driver_info = BTUSB_REALTEK |
474 BTUSB_WIDEBAND_SPEECH },
475 { USB_DEVICE(0x0bda, 0xc123), .driver_info = BTUSB_REALTEK |
476 BTUSB_WIDEBAND_SPEECH },
477 { USB_DEVICE(0x0cb5, 0xc547), .driver_info = BTUSB_REALTEK |
478 BTUSB_WIDEBAND_SPEECH },
479
480 /* Silicon Wave based devices */
481 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
482
483 { } /* Terminating entry */
484};
485
486/* The Bluetooth USB module build into some devices needs to be reset on resume,
487 * this is a problem with the platform (likely shutting off all power) not with
488 * the module itself. So we use a DMI list to match known broken platforms.
489 */
490static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
491 {
492 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
493 .matches = {
494 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
495 DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
496 },
497 },
498 {
499 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
500 .matches = {
501 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
502 DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
503 },
504 },
505 {
506 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
507 .matches = {
508 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
509 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
510 },
511 },
512 {}
513};
514
515#define BTUSB_MAX_ISOC_FRAMES 10
516
517#define BTUSB_INTR_RUNNING 0
518#define BTUSB_BULK_RUNNING 1
519#define BTUSB_ISOC_RUNNING 2
520#define BTUSB_SUSPENDING 3
521#define BTUSB_DID_ISO_RESUME 4
522#define BTUSB_BOOTLOADER 5
523#define BTUSB_DOWNLOADING 6
524#define BTUSB_FIRMWARE_LOADED 7
525#define BTUSB_FIRMWARE_FAILED 8
526#define BTUSB_BOOTING 9
527#define BTUSB_DIAG_RUNNING 10
528#define BTUSB_OOB_WAKE_ENABLED 11
529#define BTUSB_HW_RESET_ACTIVE 12
530#define BTUSB_TX_WAIT_VND_EVT 13
531#define BTUSB_WAKEUP_DISABLE 14
532#define BTUSB_USE_ALT3_FOR_WBS 15
533
534struct btusb_data {
535 struct hci_dev *hdev;
536 struct usb_device *udev;
537 struct usb_interface *intf;
538 struct usb_interface *isoc;
539 struct usb_interface *diag;
540 unsigned isoc_ifnum;
541
542 unsigned long flags;
543
544 struct work_struct work;
545 struct work_struct waker;
546
547 struct usb_anchor deferred;
548 struct usb_anchor tx_anchor;
549 int tx_in_flight;
550 spinlock_t txlock;
551
552 struct usb_anchor intr_anchor;
553 struct usb_anchor bulk_anchor;
554 struct usb_anchor isoc_anchor;
555 struct usb_anchor diag_anchor;
556 struct usb_anchor ctrl_anchor;
557 spinlock_t rxlock;
558
559 struct sk_buff *evt_skb;
560 struct sk_buff *acl_skb;
561 struct sk_buff *sco_skb;
562
563 struct usb_endpoint_descriptor *intr_ep;
564 struct usb_endpoint_descriptor *bulk_tx_ep;
565 struct usb_endpoint_descriptor *bulk_rx_ep;
566 struct usb_endpoint_descriptor *isoc_tx_ep;
567 struct usb_endpoint_descriptor *isoc_rx_ep;
568 struct usb_endpoint_descriptor *diag_tx_ep;
569 struct usb_endpoint_descriptor *diag_rx_ep;
570
571 struct gpio_desc *reset_gpio;
572
573 __u8 cmdreq_type;
574 __u8 cmdreq;
575
576 unsigned int sco_num;
577 unsigned int air_mode;
578 bool usb_alt6_packet_flow;
579 int isoc_altsetting;
580 int suspend_count;
581
582 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
583 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
584
585 int (*setup_on_usb)(struct hci_dev *hdev);
586
587 int oob_wake_irq; /* irq for out-of-band wake-on-bt */
588 unsigned cmd_timeout_cnt;
589};
590
591static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
592{
593 struct btusb_data *data = hci_get_drvdata(hdev);
594 struct gpio_desc *reset_gpio = data->reset_gpio;
595
596 if (++data->cmd_timeout_cnt < 5)
597 return;
598
599 if (!reset_gpio) {
600 bt_dev_err(hdev, "No way to reset. Ignoring and continuing");
601 return;
602 }
603
604 /*
605 * Toggle the hard reset line if the platform provides one. The reset
606 * is going to yank the device off the USB and then replug. So doing
607 * once is enough. The cleanup is handled correctly on the way out
608 * (standard USB disconnect), and the new device is detected cleanly
609 * and bound to the driver again like it should be.
610 */
611 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
612 bt_dev_err(hdev, "last reset failed? Not resetting again");
613 return;
614 }
615
616 bt_dev_err(hdev, "Initiating HW reset via gpio");
617 gpiod_set_value_cansleep(reset_gpio, 1);
618 msleep(100);
619 gpiod_set_value_cansleep(reset_gpio, 0);
620}
621
622static void btusb_rtl_cmd_timeout(struct hci_dev *hdev)
623{
624 struct btusb_data *data = hci_get_drvdata(hdev);
625 struct gpio_desc *reset_gpio = data->reset_gpio;
626
627 if (++data->cmd_timeout_cnt < 5)
628 return;
629
630 if (!reset_gpio) {
631 bt_dev_err(hdev, "No gpio to reset Realtek device, ignoring");
632 return;
633 }
634
635 /* Toggle the hard reset line. The Realtek device is going to
636 * yank itself off the USB and then replug. The cleanup is handled
637 * correctly on the way out (standard USB disconnect), and the new
638 * device is detected cleanly and bound to the driver again like
639 * it should be.
640 */
641 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
642 bt_dev_err(hdev, "last reset failed? Not resetting again");
643 return;
644 }
645
646 bt_dev_err(hdev, "Reset Realtek device via gpio");
647 gpiod_set_value_cansleep(reset_gpio, 1);
648 msleep(200);
649 gpiod_set_value_cansleep(reset_gpio, 0);
650}
651
652static void btusb_qca_cmd_timeout(struct hci_dev *hdev)
653{
654 struct btusb_data *data = hci_get_drvdata(hdev);
655 int err;
656
657 if (++data->cmd_timeout_cnt < 5)
658 return;
659
660 bt_dev_err(hdev, "Multiple cmd timeouts seen. Resetting usb device.");
661 /* This is not an unbalanced PM reference since the device will reset */
662 err = usb_autopm_get_interface(data->intf);
663 if (!err)
664 usb_queue_reset_device(data->intf);
665 else
666 bt_dev_err(hdev, "Failed usb_autopm_get_interface with %d", err);
667}
668
669static inline void btusb_free_frags(struct btusb_data *data)
670{
671 unsigned long flags;
672
673 spin_lock_irqsave(&data->rxlock, flags);
674
675 kfree_skb(data->evt_skb);
676 data->evt_skb = NULL;
677
678 kfree_skb(data->acl_skb);
679 data->acl_skb = NULL;
680
681 kfree_skb(data->sco_skb);
682 data->sco_skb = NULL;
683
684 spin_unlock_irqrestore(&data->rxlock, flags);
685}
686
687static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
688{
689 struct sk_buff *skb;
690 unsigned long flags;
691 int err = 0;
692
693 spin_lock_irqsave(&data->rxlock, flags);
694 skb = data->evt_skb;
695
696 while (count) {
697 int len;
698
699 if (!skb) {
700 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
701 if (!skb) {
702 err = -ENOMEM;
703 break;
704 }
705
706 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
707 hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
708 }
709
710 len = min_t(uint, hci_skb_expect(skb), count);
711 skb_put_data(skb, buffer, len);
712
713 count -= len;
714 buffer += len;
715 hci_skb_expect(skb) -= len;
716
717 if (skb->len == HCI_EVENT_HDR_SIZE) {
718 /* Complete event header */
719 hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
720
721 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
722 kfree_skb(skb);
723 skb = NULL;
724
725 err = -EILSEQ;
726 break;
727 }
728 }
729
730 if (!hci_skb_expect(skb)) {
731 /* Complete frame */
732 data->recv_event(data->hdev, skb);
733 skb = NULL;
734 }
735 }
736
737 data->evt_skb = skb;
738 spin_unlock_irqrestore(&data->rxlock, flags);
739
740 return err;
741}
742
743static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
744{
745 struct sk_buff *skb;
746 unsigned long flags;
747 int err = 0;
748
749 spin_lock_irqsave(&data->rxlock, flags);
750 skb = data->acl_skb;
751
752 while (count) {
753 int len;
754
755 if (!skb) {
756 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
757 if (!skb) {
758 err = -ENOMEM;
759 break;
760 }
761
762 hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
763 hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
764 }
765
766 len = min_t(uint, hci_skb_expect(skb), count);
767 skb_put_data(skb, buffer, len);
768
769 count -= len;
770 buffer += len;
771 hci_skb_expect(skb) -= len;
772
773 if (skb->len == HCI_ACL_HDR_SIZE) {
774 __le16 dlen = hci_acl_hdr(skb)->dlen;
775
776 /* Complete ACL header */
777 hci_skb_expect(skb) = __le16_to_cpu(dlen);
778
779 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
780 kfree_skb(skb);
781 skb = NULL;
782
783 err = -EILSEQ;
784 break;
785 }
786 }
787
788 if (!hci_skb_expect(skb)) {
789 /* Complete frame */
790 hci_recv_frame(data->hdev, skb);
791 skb = NULL;
792 }
793 }
794
795 data->acl_skb = skb;
796 spin_unlock_irqrestore(&data->rxlock, flags);
797
798 return err;
799}
800
801static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
802{
803 struct sk_buff *skb;
804 unsigned long flags;
805 int err = 0;
806
807 spin_lock_irqsave(&data->rxlock, flags);
808 skb = data->sco_skb;
809
810 while (count) {
811 int len;
812
813 if (!skb) {
814 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
815 if (!skb) {
816 err = -ENOMEM;
817 break;
818 }
819
820 hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
821 hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
822 }
823
824 len = min_t(uint, hci_skb_expect(skb), count);
825 skb_put_data(skb, buffer, len);
826
827 count -= len;
828 buffer += len;
829 hci_skb_expect(skb) -= len;
830
831 if (skb->len == HCI_SCO_HDR_SIZE) {
832 /* Complete SCO header */
833 hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
834
835 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
836 kfree_skb(skb);
837 skb = NULL;
838
839 err = -EILSEQ;
840 break;
841 }
842 }
843
844 if (!hci_skb_expect(skb)) {
845 /* Complete frame */
846 hci_recv_frame(data->hdev, skb);
847 skb = NULL;
848 }
849 }
850
851 data->sco_skb = skb;
852 spin_unlock_irqrestore(&data->rxlock, flags);
853
854 return err;
855}
856
857static void btusb_intr_complete(struct urb *urb)
858{
859 struct hci_dev *hdev = urb->context;
860 struct btusb_data *data = hci_get_drvdata(hdev);
861 int err;
862
863 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
864 urb->actual_length);
865
866 if (!test_bit(HCI_RUNNING, &hdev->flags))
867 return;
868
869 if (urb->status == 0) {
870 hdev->stat.byte_rx += urb->actual_length;
871
872 if (btusb_recv_intr(data, urb->transfer_buffer,
873 urb->actual_length) < 0) {
874 bt_dev_err(hdev, "corrupted event packet");
875 hdev->stat.err_rx++;
876 }
877 } else if (urb->status == -ENOENT) {
878 /* Avoid suspend failed when usb_kill_urb */
879 return;
880 }
881
882 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
883 return;
884
885 usb_mark_last_busy(data->udev);
886 usb_anchor_urb(urb, &data->intr_anchor);
887
888 err = usb_submit_urb(urb, GFP_ATOMIC);
889 if (err < 0) {
890 /* -EPERM: urb is being killed;
891 * -ENODEV: device got disconnected
892 */
893 if (err != -EPERM && err != -ENODEV)
894 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
895 urb, -err);
896 usb_unanchor_urb(urb);
897 }
898}
899
900static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
901{
902 struct btusb_data *data = hci_get_drvdata(hdev);
903 struct urb *urb;
904 unsigned char *buf;
905 unsigned int pipe;
906 int err, size;
907
908 BT_DBG("%s", hdev->name);
909
910 if (!data->intr_ep)
911 return -ENODEV;
912
913 urb = usb_alloc_urb(0, mem_flags);
914 if (!urb)
915 return -ENOMEM;
916
917 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
918
919 buf = kmalloc(size, mem_flags);
920 if (!buf) {
921 usb_free_urb(urb);
922 return -ENOMEM;
923 }
924
925 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
926
927 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
928 btusb_intr_complete, hdev, data->intr_ep->bInterval);
929
930 urb->transfer_flags |= URB_FREE_BUFFER;
931
932 usb_anchor_urb(urb, &data->intr_anchor);
933
934 err = usb_submit_urb(urb, mem_flags);
935 if (err < 0) {
936 if (err != -EPERM && err != -ENODEV)
937 bt_dev_err(hdev, "urb %p submission failed (%d)",
938 urb, -err);
939 usb_unanchor_urb(urb);
940 }
941
942 usb_free_urb(urb);
943
944 return err;
945}
946
947static void btusb_bulk_complete(struct urb *urb)
948{
949 struct hci_dev *hdev = urb->context;
950 struct btusb_data *data = hci_get_drvdata(hdev);
951 int err;
952
953 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
954 urb->actual_length);
955
956 if (!test_bit(HCI_RUNNING, &hdev->flags))
957 return;
958
959 if (urb->status == 0) {
960 hdev->stat.byte_rx += urb->actual_length;
961
962 if (data->recv_bulk(data, urb->transfer_buffer,
963 urb->actual_length) < 0) {
964 bt_dev_err(hdev, "corrupted ACL packet");
965 hdev->stat.err_rx++;
966 }
967 } else if (urb->status == -ENOENT) {
968 /* Avoid suspend failed when usb_kill_urb */
969 return;
970 }
971
972 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
973 return;
974
975 usb_anchor_urb(urb, &data->bulk_anchor);
976 usb_mark_last_busy(data->udev);
977
978 err = usb_submit_urb(urb, GFP_ATOMIC);
979 if (err < 0) {
980 /* -EPERM: urb is being killed;
981 * -ENODEV: device got disconnected
982 */
983 if (err != -EPERM && err != -ENODEV)
984 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
985 urb, -err);
986 usb_unanchor_urb(urb);
987 }
988}
989
990static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
991{
992 struct btusb_data *data = hci_get_drvdata(hdev);
993 struct urb *urb;
994 unsigned char *buf;
995 unsigned int pipe;
996 int err, size = HCI_MAX_FRAME_SIZE;
997
998 BT_DBG("%s", hdev->name);
999
1000 if (!data->bulk_rx_ep)
1001 return -ENODEV;
1002
1003 urb = usb_alloc_urb(0, mem_flags);
1004 if (!urb)
1005 return -ENOMEM;
1006
1007 buf = kmalloc(size, mem_flags);
1008 if (!buf) {
1009 usb_free_urb(urb);
1010 return -ENOMEM;
1011 }
1012
1013 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
1014
1015 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1016 btusb_bulk_complete, hdev);
1017
1018 urb->transfer_flags |= URB_FREE_BUFFER;
1019
1020 usb_mark_last_busy(data->udev);
1021 usb_anchor_urb(urb, &data->bulk_anchor);
1022
1023 err = usb_submit_urb(urb, mem_flags);
1024 if (err < 0) {
1025 if (err != -EPERM && err != -ENODEV)
1026 bt_dev_err(hdev, "urb %p submission failed (%d)",
1027 urb, -err);
1028 usb_unanchor_urb(urb);
1029 }
1030
1031 usb_free_urb(urb);
1032
1033 return err;
1034}
1035
1036static void btusb_isoc_complete(struct urb *urb)
1037{
1038 struct hci_dev *hdev = urb->context;
1039 struct btusb_data *data = hci_get_drvdata(hdev);
1040 int i, err;
1041
1042 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1043 urb->actual_length);
1044
1045 if (!test_bit(HCI_RUNNING, &hdev->flags))
1046 return;
1047
1048 if (urb->status == 0) {
1049 for (i = 0; i < urb->number_of_packets; i++) {
1050 unsigned int offset = urb->iso_frame_desc[i].offset;
1051 unsigned int length = urb->iso_frame_desc[i].actual_length;
1052
1053 if (urb->iso_frame_desc[i].status)
1054 continue;
1055
1056 hdev->stat.byte_rx += length;
1057
1058 if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
1059 length) < 0) {
1060 bt_dev_err(hdev, "corrupted SCO packet");
1061 hdev->stat.err_rx++;
1062 }
1063 }
1064 } else if (urb->status == -ENOENT) {
1065 /* Avoid suspend failed when usb_kill_urb */
1066 return;
1067 }
1068
1069 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
1070 return;
1071
1072 usb_anchor_urb(urb, &data->isoc_anchor);
1073
1074 err = usb_submit_urb(urb, GFP_ATOMIC);
1075 if (err < 0) {
1076 /* -EPERM: urb is being killed;
1077 * -ENODEV: device got disconnected
1078 */
1079 if (err != -EPERM && err != -ENODEV)
1080 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1081 urb, -err);
1082 usb_unanchor_urb(urb);
1083 }
1084}
1085
1086static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len,
1087 int mtu, struct btusb_data *data)
1088{
1089 int i, offset = 0;
1090 unsigned int interval;
1091
1092 BT_DBG("len %d mtu %d", len, mtu);
1093
1094 /* For mSBC ALT 6 setting the host will send the packet at continuous
1095 * flow. As per core spec 5, vol 4, part B, table 2.1. For ALT setting
1096 * 6 the HCI PACKET INTERVAL should be 7.5ms for every usb packets.
1097 * To maintain the rate we send 63bytes of usb packets alternatively for
1098 * 7ms and 8ms to maintain the rate as 7.5ms.
1099 */
1100 if (data->usb_alt6_packet_flow) {
1101 interval = 7;
1102 data->usb_alt6_packet_flow = false;
1103 } else {
1104 interval = 6;
1105 data->usb_alt6_packet_flow = true;
1106 }
1107
1108 for (i = 0; i < interval; i++) {
1109 urb->iso_frame_desc[i].offset = offset;
1110 urb->iso_frame_desc[i].length = offset;
1111 }
1112
1113 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1114 urb->iso_frame_desc[i].offset = offset;
1115 urb->iso_frame_desc[i].length = len;
1116 i++;
1117 }
1118
1119 urb->number_of_packets = i;
1120}
1121
1122static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
1123{
1124 int i, offset = 0;
1125
1126 BT_DBG("len %d mtu %d", len, mtu);
1127
1128 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
1129 i++, offset += mtu, len -= mtu) {
1130 urb->iso_frame_desc[i].offset = offset;
1131 urb->iso_frame_desc[i].length = mtu;
1132 }
1133
1134 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1135 urb->iso_frame_desc[i].offset = offset;
1136 urb->iso_frame_desc[i].length = len;
1137 i++;
1138 }
1139
1140 urb->number_of_packets = i;
1141}
1142
1143static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
1144{
1145 struct btusb_data *data = hci_get_drvdata(hdev);
1146 struct urb *urb;
1147 unsigned char *buf;
1148 unsigned int pipe;
1149 int err, size;
1150
1151 BT_DBG("%s", hdev->name);
1152
1153 if (!data->isoc_rx_ep)
1154 return -ENODEV;
1155
1156 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
1157 if (!urb)
1158 return -ENOMEM;
1159
1160 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
1161 BTUSB_MAX_ISOC_FRAMES;
1162
1163 buf = kmalloc(size, mem_flags);
1164 if (!buf) {
1165 usb_free_urb(urb);
1166 return -ENOMEM;
1167 }
1168
1169 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
1170
1171 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
1172 hdev, data->isoc_rx_ep->bInterval);
1173
1174 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
1175
1176 __fill_isoc_descriptor(urb, size,
1177 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
1178
1179 usb_anchor_urb(urb, &data->isoc_anchor);
1180
1181 err = usb_submit_urb(urb, mem_flags);
1182 if (err < 0) {
1183 if (err != -EPERM && err != -ENODEV)
1184 bt_dev_err(hdev, "urb %p submission failed (%d)",
1185 urb, -err);
1186 usb_unanchor_urb(urb);
1187 }
1188
1189 usb_free_urb(urb);
1190
1191 return err;
1192}
1193
1194static void btusb_diag_complete(struct urb *urb)
1195{
1196 struct hci_dev *hdev = urb->context;
1197 struct btusb_data *data = hci_get_drvdata(hdev);
1198 int err;
1199
1200 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1201 urb->actual_length);
1202
1203 if (urb->status == 0) {
1204 struct sk_buff *skb;
1205
1206 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1207 if (skb) {
1208 skb_put_data(skb, urb->transfer_buffer,
1209 urb->actual_length);
1210 hci_recv_diag(hdev, skb);
1211 }
1212 } else if (urb->status == -ENOENT) {
1213 /* Avoid suspend failed when usb_kill_urb */
1214 return;
1215 }
1216
1217 if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1218 return;
1219
1220 usb_anchor_urb(urb, &data->diag_anchor);
1221 usb_mark_last_busy(data->udev);
1222
1223 err = usb_submit_urb(urb, GFP_ATOMIC);
1224 if (err < 0) {
1225 /* -EPERM: urb is being killed;
1226 * -ENODEV: device got disconnected
1227 */
1228 if (err != -EPERM && err != -ENODEV)
1229 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1230 urb, -err);
1231 usb_unanchor_urb(urb);
1232 }
1233}
1234
1235static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1236{
1237 struct btusb_data *data = hci_get_drvdata(hdev);
1238 struct urb *urb;
1239 unsigned char *buf;
1240 unsigned int pipe;
1241 int err, size = HCI_MAX_FRAME_SIZE;
1242
1243 BT_DBG("%s", hdev->name);
1244
1245 if (!data->diag_rx_ep)
1246 return -ENODEV;
1247
1248 urb = usb_alloc_urb(0, mem_flags);
1249 if (!urb)
1250 return -ENOMEM;
1251
1252 buf = kmalloc(size, mem_flags);
1253 if (!buf) {
1254 usb_free_urb(urb);
1255 return -ENOMEM;
1256 }
1257
1258 pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1259
1260 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1261 btusb_diag_complete, hdev);
1262
1263 urb->transfer_flags |= URB_FREE_BUFFER;
1264
1265 usb_mark_last_busy(data->udev);
1266 usb_anchor_urb(urb, &data->diag_anchor);
1267
1268 err = usb_submit_urb(urb, mem_flags);
1269 if (err < 0) {
1270 if (err != -EPERM && err != -ENODEV)
1271 bt_dev_err(hdev, "urb %p submission failed (%d)",
1272 urb, -err);
1273 usb_unanchor_urb(urb);
1274 }
1275
1276 usb_free_urb(urb);
1277
1278 return err;
1279}
1280
1281static void btusb_tx_complete(struct urb *urb)
1282{
1283 struct sk_buff *skb = urb->context;
1284 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1285 struct btusb_data *data = hci_get_drvdata(hdev);
1286 unsigned long flags;
1287
1288 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1289 urb->actual_length);
1290
1291 if (!test_bit(HCI_RUNNING, &hdev->flags))
1292 goto done;
1293
1294 if (!urb->status)
1295 hdev->stat.byte_tx += urb->transfer_buffer_length;
1296 else
1297 hdev->stat.err_tx++;
1298
1299done:
1300 spin_lock_irqsave(&data->txlock, flags);
1301 data->tx_in_flight--;
1302 spin_unlock_irqrestore(&data->txlock, flags);
1303
1304 kfree(urb->setup_packet);
1305
1306 kfree_skb(skb);
1307}
1308
1309static void btusb_isoc_tx_complete(struct urb *urb)
1310{
1311 struct sk_buff *skb = urb->context;
1312 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1313
1314 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1315 urb->actual_length);
1316
1317 if (!test_bit(HCI_RUNNING, &hdev->flags))
1318 goto done;
1319
1320 if (!urb->status)
1321 hdev->stat.byte_tx += urb->transfer_buffer_length;
1322 else
1323 hdev->stat.err_tx++;
1324
1325done:
1326 kfree(urb->setup_packet);
1327
1328 kfree_skb(skb);
1329}
1330
1331static int btusb_open(struct hci_dev *hdev)
1332{
1333 struct btusb_data *data = hci_get_drvdata(hdev);
1334 int err;
1335
1336 BT_DBG("%s", hdev->name);
1337
1338 err = usb_autopm_get_interface(data->intf);
1339 if (err < 0)
1340 return err;
1341
1342 /* Patching USB firmware files prior to starting any URBs of HCI path
1343 * It is more safe to use USB bulk channel for downloading USB patch
1344 */
1345 if (data->setup_on_usb) {
1346 err = data->setup_on_usb(hdev);
1347 if (err < 0)
1348 goto setup_fail;
1349 }
1350
1351 data->intf->needs_remote_wakeup = 1;
1352
1353 /* Disable device remote wakeup when host is suspended
1354 * For Realtek chips, global suspend without
1355 * SET_FEATURE (DEVICE_REMOTE_WAKEUP) can save more power in device.
1356 */
1357 if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1358 device_wakeup_disable(&data->udev->dev);
1359
1360 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1361 goto done;
1362
1363 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1364 if (err < 0)
1365 goto failed;
1366
1367 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1368 if (err < 0) {
1369 usb_kill_anchored_urbs(&data->intr_anchor);
1370 goto failed;
1371 }
1372
1373 set_bit(BTUSB_BULK_RUNNING, &data->flags);
1374 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1375
1376 if (data->diag) {
1377 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1378 set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1379 }
1380
1381done:
1382 usb_autopm_put_interface(data->intf);
1383 return 0;
1384
1385failed:
1386 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1387setup_fail:
1388 usb_autopm_put_interface(data->intf);
1389 return err;
1390}
1391
1392static void btusb_stop_traffic(struct btusb_data *data)
1393{
1394 usb_kill_anchored_urbs(&data->intr_anchor);
1395 usb_kill_anchored_urbs(&data->bulk_anchor);
1396 usb_kill_anchored_urbs(&data->isoc_anchor);
1397 usb_kill_anchored_urbs(&data->diag_anchor);
1398 usb_kill_anchored_urbs(&data->ctrl_anchor);
1399}
1400
1401static int btusb_close(struct hci_dev *hdev)
1402{
1403 struct btusb_data *data = hci_get_drvdata(hdev);
1404 int err;
1405
1406 BT_DBG("%s", hdev->name);
1407
1408 cancel_work_sync(&data->work);
1409 cancel_work_sync(&data->waker);
1410
1411 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1412 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1413 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1414 clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1415
1416 btusb_stop_traffic(data);
1417 btusb_free_frags(data);
1418
1419 err = usb_autopm_get_interface(data->intf);
1420 if (err < 0)
1421 goto failed;
1422
1423 data->intf->needs_remote_wakeup = 0;
1424
1425 /* Enable remote wake up for auto-suspend */
1426 if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1427 data->intf->needs_remote_wakeup = 1;
1428
1429 usb_autopm_put_interface(data->intf);
1430
1431failed:
1432 usb_scuttle_anchored_urbs(&data->deferred);
1433 return 0;
1434}
1435
1436static int btusb_flush(struct hci_dev *hdev)
1437{
1438 struct btusb_data *data = hci_get_drvdata(hdev);
1439
1440 BT_DBG("%s", hdev->name);
1441
1442 usb_kill_anchored_urbs(&data->tx_anchor);
1443 btusb_free_frags(data);
1444
1445 return 0;
1446}
1447
1448static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1449{
1450 struct btusb_data *data = hci_get_drvdata(hdev);
1451 struct usb_ctrlrequest *dr;
1452 struct urb *urb;
1453 unsigned int pipe;
1454
1455 urb = usb_alloc_urb(0, GFP_KERNEL);
1456 if (!urb)
1457 return ERR_PTR(-ENOMEM);
1458
1459 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1460 if (!dr) {
1461 usb_free_urb(urb);
1462 return ERR_PTR(-ENOMEM);
1463 }
1464
1465 dr->bRequestType = data->cmdreq_type;
1466 dr->bRequest = data->cmdreq;
1467 dr->wIndex = 0;
1468 dr->wValue = 0;
1469 dr->wLength = __cpu_to_le16(skb->len);
1470
1471 pipe = usb_sndctrlpipe(data->udev, 0x00);
1472
1473 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1474 skb->data, skb->len, btusb_tx_complete, skb);
1475
1476 skb->dev = (void *)hdev;
1477
1478 return urb;
1479}
1480
1481static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1482{
1483 struct btusb_data *data = hci_get_drvdata(hdev);
1484 struct urb *urb;
1485 unsigned int pipe;
1486
1487 if (!data->bulk_tx_ep)
1488 return ERR_PTR(-ENODEV);
1489
1490 urb = usb_alloc_urb(0, GFP_KERNEL);
1491 if (!urb)
1492 return ERR_PTR(-ENOMEM);
1493
1494 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1495
1496 usb_fill_bulk_urb(urb, data->udev, pipe,
1497 skb->data, skb->len, btusb_tx_complete, skb);
1498
1499 skb->dev = (void *)hdev;
1500
1501 return urb;
1502}
1503
1504static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1505{
1506 struct btusb_data *data = hci_get_drvdata(hdev);
1507 struct urb *urb;
1508 unsigned int pipe;
1509
1510 if (!data->isoc_tx_ep)
1511 return ERR_PTR(-ENODEV);
1512
1513 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1514 if (!urb)
1515 return ERR_PTR(-ENOMEM);
1516
1517 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1518
1519 usb_fill_int_urb(urb, data->udev, pipe,
1520 skb->data, skb->len, btusb_isoc_tx_complete,
1521 skb, data->isoc_tx_ep->bInterval);
1522
1523 urb->transfer_flags = URB_ISO_ASAP;
1524
1525 if (data->isoc_altsetting == 6)
1526 __fill_isoc_descriptor_msbc(urb, skb->len,
1527 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize),
1528 data);
1529 else
1530 __fill_isoc_descriptor(urb, skb->len,
1531 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1532 skb->dev = (void *)hdev;
1533
1534 return urb;
1535}
1536
1537static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1538{
1539 struct btusb_data *data = hci_get_drvdata(hdev);
1540 int err;
1541
1542 usb_anchor_urb(urb, &data->tx_anchor);
1543
1544 err = usb_submit_urb(urb, GFP_KERNEL);
1545 if (err < 0) {
1546 if (err != -EPERM && err != -ENODEV)
1547 bt_dev_err(hdev, "urb %p submission failed (%d)",
1548 urb, -err);
1549 kfree(urb->setup_packet);
1550 usb_unanchor_urb(urb);
1551 } else {
1552 usb_mark_last_busy(data->udev);
1553 }
1554
1555 usb_free_urb(urb);
1556 return err;
1557}
1558
1559static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1560{
1561 struct btusb_data *data = hci_get_drvdata(hdev);
1562 unsigned long flags;
1563 bool suspending;
1564
1565 spin_lock_irqsave(&data->txlock, flags);
1566 suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1567 if (!suspending)
1568 data->tx_in_flight++;
1569 spin_unlock_irqrestore(&data->txlock, flags);
1570
1571 if (!suspending)
1572 return submit_tx_urb(hdev, urb);
1573
1574 usb_anchor_urb(urb, &data->deferred);
1575 schedule_work(&data->waker);
1576
1577 usb_free_urb(urb);
1578 return 0;
1579}
1580
1581static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1582{
1583 struct urb *urb;
1584
1585 BT_DBG("%s", hdev->name);
1586
1587 switch (hci_skb_pkt_type(skb)) {
1588 case HCI_COMMAND_PKT:
1589 urb = alloc_ctrl_urb(hdev, skb);
1590 if (IS_ERR(urb))
1591 return PTR_ERR(urb);
1592
1593 hdev->stat.cmd_tx++;
1594 return submit_or_queue_tx_urb(hdev, urb);
1595
1596 case HCI_ACLDATA_PKT:
1597 urb = alloc_bulk_urb(hdev, skb);
1598 if (IS_ERR(urb))
1599 return PTR_ERR(urb);
1600
1601 hdev->stat.acl_tx++;
1602 return submit_or_queue_tx_urb(hdev, urb);
1603
1604 case HCI_SCODATA_PKT:
1605 if (hci_conn_num(hdev, SCO_LINK) < 1)
1606 return -ENODEV;
1607
1608 urb = alloc_isoc_urb(hdev, skb);
1609 if (IS_ERR(urb))
1610 return PTR_ERR(urb);
1611
1612 hdev->stat.sco_tx++;
1613 return submit_tx_urb(hdev, urb);
1614 }
1615
1616 return -EILSEQ;
1617}
1618
1619static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1620{
1621 struct btusb_data *data = hci_get_drvdata(hdev);
1622
1623 BT_DBG("%s evt %d", hdev->name, evt);
1624
1625 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1626 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1627 data->air_mode = evt;
1628 schedule_work(&data->work);
1629 }
1630}
1631
1632static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1633{
1634 struct btusb_data *data = hci_get_drvdata(hdev);
1635 struct usb_interface *intf = data->isoc;
1636 struct usb_endpoint_descriptor *ep_desc;
1637 int i, err;
1638
1639 if (!data->isoc)
1640 return -ENODEV;
1641
1642 err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1643 if (err < 0) {
1644 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1645 return err;
1646 }
1647
1648 data->isoc_altsetting = altsetting;
1649
1650 data->isoc_tx_ep = NULL;
1651 data->isoc_rx_ep = NULL;
1652
1653 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1654 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1655
1656 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1657 data->isoc_tx_ep = ep_desc;
1658 continue;
1659 }
1660
1661 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1662 data->isoc_rx_ep = ep_desc;
1663 continue;
1664 }
1665 }
1666
1667 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1668 bt_dev_err(hdev, "invalid SCO descriptors");
1669 return -ENODEV;
1670 }
1671
1672 return 0;
1673}
1674
1675static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts)
1676{
1677 struct btusb_data *data = hci_get_drvdata(hdev);
1678 int err;
1679
1680 if (data->isoc_altsetting != new_alts) {
1681 unsigned long flags;
1682
1683 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1684 usb_kill_anchored_urbs(&data->isoc_anchor);
1685
1686 /* When isochronous alternate setting needs to be
1687 * changed, because SCO connection has been added
1688 * or removed, a packet fragment may be left in the
1689 * reassembling state. This could lead to wrongly
1690 * assembled fragments.
1691 *
1692 * Clear outstanding fragment when selecting a new
1693 * alternate setting.
1694 */
1695 spin_lock_irqsave(&data->rxlock, flags);
1696 kfree_skb(data->sco_skb);
1697 data->sco_skb = NULL;
1698 spin_unlock_irqrestore(&data->rxlock, flags);
1699
1700 err = __set_isoc_interface(hdev, new_alts);
1701 if (err < 0)
1702 return err;
1703 }
1704
1705 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1706 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1707 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1708 else
1709 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1710 }
1711
1712 return 0;
1713}
1714
1715static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data,
1716 int alt)
1717{
1718 struct usb_interface *intf = data->isoc;
1719 int i;
1720
1721 BT_DBG("Looking for Alt no :%d", alt);
1722
1723 if (!intf)
1724 return NULL;
1725
1726 for (i = 0; i < intf->num_altsetting; i++) {
1727 if (intf->altsetting[i].desc.bAlternateSetting == alt)
1728 return &intf->altsetting[i];
1729 }
1730
1731 return NULL;
1732}
1733
1734static void btusb_work(struct work_struct *work)
1735{
1736 struct btusb_data *data = container_of(work, struct btusb_data, work);
1737 struct hci_dev *hdev = data->hdev;
1738 int new_alts = 0;
1739 int err;
1740
1741 if (data->sco_num > 0) {
1742 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1743 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1744 if (err < 0) {
1745 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1746 usb_kill_anchored_urbs(&data->isoc_anchor);
1747 return;
1748 }
1749
1750 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1751 }
1752
1753 if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_CVSD) {
1754 if (hdev->voice_setting & 0x0020) {
1755 static const int alts[3] = { 2, 4, 5 };
1756
1757 new_alts = alts[data->sco_num - 1];
1758 } else {
1759 new_alts = data->sco_num;
1760 }
1761 } else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) {
1762 /* Bluetooth USB spec recommends alt 6 (63 bytes), but
1763 * many adapters do not support it. Alt 1 appears to
1764 * work for all adapters that do not have alt 6, and
1765 * which work with WBS at all. Some devices prefer
1766 * alt 3 (HCI payload >= 60 Bytes let air packet
1767 * data satisfy 60 bytes), requiring
1768 * MTU >= 3 (packets) * 25 (size) - 3 (headers) = 72
1769 * see also Core spec 5, vol 4, B 2.1.1 & Table 2.1.
1770 */
1771 if (btusb_find_altsetting(data, 6))
1772 new_alts = 6;
1773 else if (btusb_find_altsetting(data, 3) &&
1774 hdev->sco_mtu >= 72 &&
1775 test_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags))
1776 new_alts = 3;
1777 else
1778 new_alts = 1;
1779 }
1780
1781 if (btusb_switch_alt_setting(hdev, new_alts) < 0)
1782 bt_dev_err(hdev, "set USB alt:(%d) failed!", new_alts);
1783 } else {
1784 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1785 usb_kill_anchored_urbs(&data->isoc_anchor);
1786
1787 __set_isoc_interface(hdev, 0);
1788 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1789 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1790 }
1791}
1792
1793static void btusb_waker(struct work_struct *work)
1794{
1795 struct btusb_data *data = container_of(work, struct btusb_data, waker);
1796 int err;
1797
1798 err = usb_autopm_get_interface(data->intf);
1799 if (err < 0)
1800 return;
1801
1802 usb_autopm_put_interface(data->intf);
1803}
1804
1805static int btusb_setup_bcm92035(struct hci_dev *hdev)
1806{
1807 struct sk_buff *skb;
1808 u8 val = 0x00;
1809
1810 BT_DBG("%s", hdev->name);
1811
1812 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1813 if (IS_ERR(skb))
1814 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
1815 else
1816 kfree_skb(skb);
1817
1818 return 0;
1819}
1820
1821static int btusb_setup_csr(struct hci_dev *hdev)
1822{
1823 struct btusb_data *data = hci_get_drvdata(hdev);
1824 u16 bcdDevice = le16_to_cpu(data->udev->descriptor.bcdDevice);
1825 struct hci_rp_read_local_version *rp;
1826 struct sk_buff *skb;
1827 bool is_fake = false;
1828 int ret;
1829
1830 BT_DBG("%s", hdev->name);
1831
1832 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1833 HCI_INIT_TIMEOUT);
1834 if (IS_ERR(skb)) {
1835 int err = PTR_ERR(skb);
1836 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
1837 return err;
1838 }
1839
1840 if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1841 bt_dev_err(hdev, "CSR: Local version length mismatch");
1842 kfree_skb(skb);
1843 return -EIO;
1844 }
1845
1846 rp = (struct hci_rp_read_local_version *)skb->data;
1847
1848 /* Detect a wide host of Chinese controllers that aren't CSR.
1849 *
1850 * Known fake bcdDevices: 0x0100, 0x0134, 0x1915, 0x2520, 0x7558, 0x8891
1851 *
1852 * The main thing they have in common is that these are really popular low-cost
1853 * options that support newer Bluetooth versions but rely on heavy VID/PID
1854 * squatting of this poor old Bluetooth 1.1 device. Even sold as such.
1855 *
1856 * We detect actual CSR devices by checking that the HCI manufacturer code
1857 * is Cambridge Silicon Radio (10) and ensuring that LMP sub-version and
1858 * HCI rev values always match. As they both store the firmware number.
1859 */
1860 if (le16_to_cpu(rp->manufacturer) != 10 ||
1861 le16_to_cpu(rp->hci_rev) != le16_to_cpu(rp->lmp_subver))
1862 is_fake = true;
1863
1864 /* Known legit CSR firmware build numbers and their supported BT versions:
1865 * - 1.1 (0x1) -> 0x0073, 0x020d, 0x033c, 0x034e
1866 * - 1.2 (0x2) -> 0x04d9, 0x0529
1867 * - 2.0 (0x3) -> 0x07a6, 0x07ad, 0x0c5c
1868 * - 2.1 (0x4) -> 0x149c, 0x1735, 0x1899 (0x1899 is a BlueCore4-External)
1869 * - 4.0 (0x6) -> 0x1d86, 0x2031, 0x22bb
1870 *
1871 * e.g. Real CSR dongles with LMP subversion 0x73 are old enough that
1872 * support BT 1.1 only; so it's a dead giveaway when some
1873 * third-party BT 4.0 dongle reuses it.
1874 */
1875 else if (le16_to_cpu(rp->lmp_subver) <= 0x034e &&
1876 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_1)
1877 is_fake = true;
1878
1879 else if (le16_to_cpu(rp->lmp_subver) <= 0x0529 &&
1880 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_2)
1881 is_fake = true;
1882
1883 else if (le16_to_cpu(rp->lmp_subver) <= 0x0c5c &&
1884 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_0)
1885 is_fake = true;
1886
1887 else if (le16_to_cpu(rp->lmp_subver) <= 0x1899 &&
1888 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_1)
1889 is_fake = true;
1890
1891 else if (le16_to_cpu(rp->lmp_subver) <= 0x22bb &&
1892 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_4_0)
1893 is_fake = true;
1894
1895 /* Other clones which beat all the above checks */
1896 else if (bcdDevice == 0x0134 &&
1897 le16_to_cpu(rp->lmp_subver) == 0x0c5c &&
1898 le16_to_cpu(rp->hci_ver) == BLUETOOTH_VER_2_0)
1899 is_fake = true;
1900
1901 if (is_fake) {
1902 bt_dev_warn(hdev, "CSR: Unbranded CSR clone detected; adding workarounds and force-suspending once...");
1903
1904 /* Generally these clones have big discrepancies between
1905 * advertised features and what's actually supported.
1906 * Probably will need to be expanded in the future;
1907 * without these the controller will lock up.
1908 */
1909 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1910 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks);
1911
1912 /* Clear the reset quirk since this is not an actual
1913 * early Bluetooth 1.1 device from CSR.
1914 */
1915 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1916 clear_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
1917
1918 /*
1919 * Special workaround for these BT 4.0 chip clones, and potentially more:
1920 *
1921 * - 0x0134: a Barrot 8041a02 (HCI rev: 0x1012 sub: 0x0810)
1922 * - 0x7558: IC markings FR3191AHAL 749H15143 (HCI rev/sub-version: 0x0709)
1923 *
1924 * These controllers are really messed-up.
1925 *
1926 * 1. Their bulk RX endpoint will never report any data unless
1927 * the device was suspended at least once (yes, really).
1928 * 2. They will not wakeup when autosuspended and receiving data
1929 * on their bulk RX endpoint from e.g. a keyboard or mouse
1930 * (IOW remote-wakeup support is broken for the bulk endpoint).
1931 *
1932 * To fix 1. enable runtime-suspend, force-suspend the
1933 * HCI and then wake-it up by disabling runtime-suspend.
1934 *
1935 * To fix 2. clear the HCI's can_wake flag, this way the HCI
1936 * will still be autosuspended when it is not open.
1937 *
1938 * --
1939 *
1940 * Because these are widespread problems we prefer generic solutions; so
1941 * apply this initialization quirk to every controller that gets here,
1942 * it should be harmless. The alternative is to not work at all.
1943 */
1944 pm_runtime_allow(&data->udev->dev);
1945
1946 ret = pm_runtime_suspend(&data->udev->dev);
1947 if (ret >= 0)
1948 msleep(200);
1949 else
1950 bt_dev_err(hdev, "CSR: Failed to suspend the device for our Barrot 8041a02 receive-issue workaround");
1951
1952 pm_runtime_forbid(&data->udev->dev);
1953
1954 device_set_wakeup_capable(&data->udev->dev, false);
1955
1956 /* Re-enable autosuspend if this was requested */
1957 if (enable_autosuspend)
1958 usb_enable_autosuspend(data->udev);
1959 }
1960
1961 kfree_skb(skb);
1962
1963 return 0;
1964}
1965
1966static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1967 struct intel_version *ver)
1968{
1969 const struct firmware *fw;
1970 char fwname[64];
1971 int ret;
1972
1973 snprintf(fwname, sizeof(fwname),
1974 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1975 ver->hw_platform, ver->hw_variant, ver->hw_revision,
1976 ver->fw_variant, ver->fw_revision, ver->fw_build_num,
1977 ver->fw_build_ww, ver->fw_build_yy);
1978
1979 ret = request_firmware(&fw, fwname, &hdev->dev);
1980 if (ret < 0) {
1981 if (ret == -EINVAL) {
1982 bt_dev_err(hdev, "Intel firmware file request failed (%d)",
1983 ret);
1984 return NULL;
1985 }
1986
1987 bt_dev_err(hdev, "failed to open Intel firmware file: %s (%d)",
1988 fwname, ret);
1989
1990 /* If the correct firmware patch file is not found, use the
1991 * default firmware patch file instead
1992 */
1993 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1994 ver->hw_platform, ver->hw_variant);
1995 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1996 bt_dev_err(hdev, "failed to open default fw file: %s",
1997 fwname);
1998 return NULL;
1999 }
2000 }
2001
2002 bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname);
2003
2004 return fw;
2005}
2006
2007static int btusb_setup_intel_patching(struct hci_dev *hdev,
2008 const struct firmware *fw,
2009 const u8 **fw_ptr, int *disable_patch)
2010{
2011 struct sk_buff *skb;
2012 struct hci_command_hdr *cmd;
2013 const u8 *cmd_param;
2014 struct hci_event_hdr *evt = NULL;
2015 const u8 *evt_param = NULL;
2016 int remain = fw->size - (*fw_ptr - fw->data);
2017
2018 /* The first byte indicates the types of the patch command or event.
2019 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
2020 * in the current firmware buffer doesn't start with 0x01 or
2021 * the size of remain buffer is smaller than HCI command header,
2022 * the firmware file is corrupted and it should stop the patching
2023 * process.
2024 */
2025 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
2026 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd read");
2027 return -EINVAL;
2028 }
2029 (*fw_ptr)++;
2030 remain--;
2031
2032 cmd = (struct hci_command_hdr *)(*fw_ptr);
2033 *fw_ptr += sizeof(*cmd);
2034 remain -= sizeof(*cmd);
2035
2036 /* Ensure that the remain firmware data is long enough than the length
2037 * of command parameter. If not, the firmware file is corrupted.
2038 */
2039 if (remain < cmd->plen) {
2040 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd len");
2041 return -EFAULT;
2042 }
2043
2044 /* If there is a command that loads a patch in the firmware
2045 * file, then enable the patch upon success, otherwise just
2046 * disable the manufacturer mode, for example patch activation
2047 * is not required when the default firmware patch file is used
2048 * because there are no patch data to load.
2049 */
2050 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
2051 *disable_patch = 0;
2052
2053 cmd_param = *fw_ptr;
2054 *fw_ptr += cmd->plen;
2055 remain -= cmd->plen;
2056
2057 /* This reads the expected events when the above command is sent to the
2058 * device. Some vendor commands expects more than one events, for
2059 * example command status event followed by vendor specific event.
2060 * For this case, it only keeps the last expected event. so the command
2061 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
2062 * last expected event.
2063 */
2064 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
2065 (*fw_ptr)++;
2066 remain--;
2067
2068 evt = (struct hci_event_hdr *)(*fw_ptr);
2069 *fw_ptr += sizeof(*evt);
2070 remain -= sizeof(*evt);
2071
2072 if (remain < evt->plen) {
2073 bt_dev_err(hdev, "Intel fw corrupted: invalid evt len");
2074 return -EFAULT;
2075 }
2076
2077 evt_param = *fw_ptr;
2078 *fw_ptr += evt->plen;
2079 remain -= evt->plen;
2080 }
2081
2082 /* Every HCI commands in the firmware file has its correspond event.
2083 * If event is not found or remain is smaller than zero, the firmware
2084 * file is corrupted.
2085 */
2086 if (!evt || !evt_param || remain < 0) {
2087 bt_dev_err(hdev, "Intel fw corrupted: invalid evt read");
2088 return -EFAULT;
2089 }
2090
2091 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
2092 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
2093 if (IS_ERR(skb)) {
2094 bt_dev_err(hdev, "sending Intel patch command (0x%4.4x) failed (%ld)",
2095 cmd->opcode, PTR_ERR(skb));
2096 return PTR_ERR(skb);
2097 }
2098
2099 /* It ensures that the returned event matches the event data read from
2100 * the firmware file. At fist, it checks the length and then
2101 * the contents of the event.
2102 */
2103 if (skb->len != evt->plen) {
2104 bt_dev_err(hdev, "mismatch event length (opcode 0x%4.4x)",
2105 le16_to_cpu(cmd->opcode));
2106 kfree_skb(skb);
2107 return -EFAULT;
2108 }
2109
2110 if (memcmp(skb->data, evt_param, evt->plen)) {
2111 bt_dev_err(hdev, "mismatch event parameter (opcode 0x%4.4x)",
2112 le16_to_cpu(cmd->opcode));
2113 kfree_skb(skb);
2114 return -EFAULT;
2115 }
2116 kfree_skb(skb);
2117
2118 return 0;
2119}
2120
2121static int btusb_setup_intel(struct hci_dev *hdev)
2122{
2123 struct sk_buff *skb;
2124 const struct firmware *fw;
2125 const u8 *fw_ptr;
2126 int disable_patch, err;
2127 struct intel_version ver;
2128
2129 BT_DBG("%s", hdev->name);
2130
2131 /* The controller has a bug with the first HCI command sent to it
2132 * returning number of completed commands as zero. This would stall the
2133 * command processing in the Bluetooth core.
2134 *
2135 * As a workaround, send HCI Reset command first which will reset the
2136 * number of completed commands and allow normal command processing
2137 * from now on.
2138 */
2139 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2140 if (IS_ERR(skb)) {
2141 bt_dev_err(hdev, "sending initial HCI reset command failed (%ld)",
2142 PTR_ERR(skb));
2143 return PTR_ERR(skb);
2144 }
2145 kfree_skb(skb);
2146
2147 /* Read Intel specific controller version first to allow selection of
2148 * which firmware file to load.
2149 *
2150 * The returned information are hardware variant and revision plus
2151 * firmware variant, revision and build number.
2152 */
2153 err = btintel_read_version(hdev, &ver);
2154 if (err)
2155 return err;
2156
2157 bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
2158 ver.hw_platform, ver.hw_variant, ver.hw_revision,
2159 ver.fw_variant, ver.fw_revision, ver.fw_build_num,
2160 ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
2161
2162 /* fw_patch_num indicates the version of patch the device currently
2163 * have. If there is no patch data in the device, it is always 0x00.
2164 * So, if it is other than 0x00, no need to patch the device again.
2165 */
2166 if (ver.fw_patch_num) {
2167 bt_dev_info(hdev, "Intel device is already patched. "
2168 "patch num: %02x", ver.fw_patch_num);
2169 goto complete;
2170 }
2171
2172 /* Opens the firmware patch file based on the firmware version read
2173 * from the controller. If it fails to open the matching firmware
2174 * patch file, it tries to open the default firmware patch file.
2175 * If no patch file is found, allow the device to operate without
2176 * a patch.
2177 */
2178 fw = btusb_setup_intel_get_fw(hdev, &ver);
2179 if (!fw)
2180 goto complete;
2181 fw_ptr = fw->data;
2182
2183 /* Enable the manufacturer mode of the controller.
2184 * Only while this mode is enabled, the driver can download the
2185 * firmware patch data and configuration parameters.
2186 */
2187 err = btintel_enter_mfg(hdev);
2188 if (err) {
2189 release_firmware(fw);
2190 return err;
2191 }
2192
2193 disable_patch = 1;
2194
2195 /* The firmware data file consists of list of Intel specific HCI
2196 * commands and its expected events. The first byte indicates the
2197 * type of the message, either HCI command or HCI event.
2198 *
2199 * It reads the command and its expected event from the firmware file,
2200 * and send to the controller. Once __hci_cmd_sync_ev() returns,
2201 * the returned event is compared with the event read from the firmware
2202 * file and it will continue until all the messages are downloaded to
2203 * the controller.
2204 *
2205 * Once the firmware patching is completed successfully,
2206 * the manufacturer mode is disabled with reset and activating the
2207 * downloaded patch.
2208 *
2209 * If the firmware patching fails, the manufacturer mode is
2210 * disabled with reset and deactivating the patch.
2211 *
2212 * If the default patch file is used, no reset is done when disabling
2213 * the manufacturer.
2214 */
2215 while (fw->size > fw_ptr - fw->data) {
2216 int ret;
2217
2218 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
2219 &disable_patch);
2220 if (ret < 0)
2221 goto exit_mfg_deactivate;
2222 }
2223
2224 release_firmware(fw);
2225
2226 if (disable_patch)
2227 goto exit_mfg_disable;
2228
2229 /* Patching completed successfully and disable the manufacturer mode
2230 * with reset and activate the downloaded firmware patches.
2231 */
2232 err = btintel_exit_mfg(hdev, true, true);
2233 if (err)
2234 return err;
2235
2236 /* Need build number for downloaded fw patches in
2237 * every power-on boot
2238 */
2239 err = btintel_read_version(hdev, &ver);
2240 if (err)
2241 return err;
2242 bt_dev_info(hdev, "Intel BT fw patch 0x%02x completed & activated",
2243 ver.fw_patch_num);
2244
2245 goto complete;
2246
2247exit_mfg_disable:
2248 /* Disable the manufacturer mode without reset */
2249 err = btintel_exit_mfg(hdev, false, false);
2250 if (err)
2251 return err;
2252
2253 bt_dev_info(hdev, "Intel firmware patch completed");
2254
2255 goto complete;
2256
2257exit_mfg_deactivate:
2258 release_firmware(fw);
2259
2260 /* Patching failed. Disable the manufacturer mode with reset and
2261 * deactivate the downloaded firmware patches.
2262 */
2263 err = btintel_exit_mfg(hdev, true, false);
2264 if (err)
2265 return err;
2266
2267 bt_dev_info(hdev, "Intel firmware patch completed and deactivated");
2268
2269complete:
2270 /* Set the event mask for Intel specific vendor events. This enables
2271 * a few extra events that are useful during general operation.
2272 */
2273 btintel_set_event_mask_mfg(hdev, false);
2274
2275 btintel_check_bdaddr(hdev);
2276 return 0;
2277}
2278
2279static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
2280{
2281 struct sk_buff *skb;
2282 struct hci_event_hdr *hdr;
2283 struct hci_ev_cmd_complete *evt;
2284
2285 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
2286 if (!skb)
2287 return -ENOMEM;
2288
2289 hdr = skb_put(skb, sizeof(*hdr));
2290 hdr->evt = HCI_EV_CMD_COMPLETE;
2291 hdr->plen = sizeof(*evt) + 1;
2292
2293 evt = skb_put(skb, sizeof(*evt));
2294 evt->ncmd = 0x01;
2295 evt->opcode = cpu_to_le16(opcode);
2296
2297 skb_put_u8(skb, 0x00);
2298
2299 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2300
2301 return hci_recv_frame(hdev, skb);
2302}
2303
2304static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
2305 int count)
2306{
2307 /* When the device is in bootloader mode, then it can send
2308 * events via the bulk endpoint. These events are treated the
2309 * same way as the ones received from the interrupt endpoint.
2310 */
2311 if (test_bit(BTUSB_BOOTLOADER, &data->flags))
2312 return btusb_recv_intr(data, buffer, count);
2313
2314 return btusb_recv_bulk(data, buffer, count);
2315}
2316
2317static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
2318 unsigned int len)
2319{
2320 const struct intel_bootup *evt = ptr;
2321
2322 if (len != sizeof(*evt))
2323 return;
2324
2325 if (test_and_clear_bit(BTUSB_BOOTING, &data->flags))
2326 wake_up_bit(&data->flags, BTUSB_BOOTING);
2327}
2328
2329static void btusb_intel_secure_send_result(struct btusb_data *data,
2330 const void *ptr, unsigned int len)
2331{
2332 const struct intel_secure_send_result *evt = ptr;
2333
2334 if (len != sizeof(*evt))
2335 return;
2336
2337 if (evt->result)
2338 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
2339
2340 if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
2341 test_bit(BTUSB_FIRMWARE_LOADED, &data->flags))
2342 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
2343}
2344
2345static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2346{
2347 struct btusb_data *data = hci_get_drvdata(hdev);
2348
2349 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2350 struct hci_event_hdr *hdr = (void *)skb->data;
2351
2352 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2353 hdr->plen > 0) {
2354 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2355 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2356
2357 switch (skb->data[2]) {
2358 case 0x02:
2359 /* When switching to the operational firmware
2360 * the device sends a vendor specific event
2361 * indicating that the bootup completed.
2362 */
2363 btusb_intel_bootup(data, ptr, len);
2364 break;
2365 case 0x06:
2366 /* When the firmware loading completes the
2367 * device sends out a vendor specific event
2368 * indicating the result of the firmware
2369 * loading.
2370 */
2371 btusb_intel_secure_send_result(data, ptr, len);
2372 break;
2373 }
2374 }
2375 }
2376
2377 return hci_recv_frame(hdev, skb);
2378}
2379
2380static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2381{
2382 struct btusb_data *data = hci_get_drvdata(hdev);
2383 struct urb *urb;
2384
2385 BT_DBG("%s", hdev->name);
2386
2387 switch (hci_skb_pkt_type(skb)) {
2388 case HCI_COMMAND_PKT:
2389 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2390 struct hci_command_hdr *cmd = (void *)skb->data;
2391 __u16 opcode = le16_to_cpu(cmd->opcode);
2392
2393 /* When in bootloader mode and the command 0xfc09
2394 * is received, it needs to be send down the
2395 * bulk endpoint. So allocate a bulk URB instead.
2396 */
2397 if (opcode == 0xfc09)
2398 urb = alloc_bulk_urb(hdev, skb);
2399 else
2400 urb = alloc_ctrl_urb(hdev, skb);
2401
2402 /* When the 0xfc01 command is issued to boot into
2403 * the operational firmware, it will actually not
2404 * send a command complete event. To keep the flow
2405 * control working inject that event here.
2406 */
2407 if (opcode == 0xfc01)
2408 inject_cmd_complete(hdev, opcode);
2409 } else {
2410 urb = alloc_ctrl_urb(hdev, skb);
2411 }
2412 if (IS_ERR(urb))
2413 return PTR_ERR(urb);
2414
2415 hdev->stat.cmd_tx++;
2416 return submit_or_queue_tx_urb(hdev, urb);
2417
2418 case HCI_ACLDATA_PKT:
2419 urb = alloc_bulk_urb(hdev, skb);
2420 if (IS_ERR(urb))
2421 return PTR_ERR(urb);
2422
2423 hdev->stat.acl_tx++;
2424 return submit_or_queue_tx_urb(hdev, urb);
2425
2426 case HCI_SCODATA_PKT:
2427 if (hci_conn_num(hdev, SCO_LINK) < 1)
2428 return -ENODEV;
2429
2430 urb = alloc_isoc_urb(hdev, skb);
2431 if (IS_ERR(urb))
2432 return PTR_ERR(urb);
2433
2434 hdev->stat.sco_tx++;
2435 return submit_tx_urb(hdev, urb);
2436 }
2437
2438 return -EILSEQ;
2439}
2440
2441static int btusb_setup_intel_new_get_fw_name(struct intel_version *ver,
2442 struct intel_boot_params *params,
2443 char *fw_name, size_t len,
2444 const char *suffix)
2445{
2446 switch (ver->hw_variant) {
2447 case 0x0b: /* SfP */
2448 case 0x0c: /* WsP */
2449 snprintf(fw_name, len, "intel/ibt-%u-%u.%s",
2450 le16_to_cpu(ver->hw_variant),
2451 le16_to_cpu(params->dev_revid),
2452 suffix);
2453 break;
2454 case 0x11: /* JfP */
2455 case 0x12: /* ThP */
2456 case 0x13: /* HrP */
2457 case 0x14: /* CcP */
2458 snprintf(fw_name, len, "intel/ibt-%u-%u-%u.%s",
2459 le16_to_cpu(ver->hw_variant),
2460 le16_to_cpu(ver->hw_revision),
2461 le16_to_cpu(ver->fw_revision),
2462 suffix);
2463 break;
2464 default:
2465 return -EINVAL;
2466 }
2467
2468 return 0;
2469}
2470
2471static void btusb_setup_intel_newgen_get_fw_name(const struct intel_version_tlv *ver_tlv,
2472 char *fw_name, size_t len,
2473 const char *suffix)
2474{
2475 /* The firmware file name for new generation controllers will be
2476 * ibt-<cnvi_top type+cnvi_top step>-<cnvr_top type+cnvr_top step>
2477 */
2478 snprintf(fw_name, len, "intel/ibt-%04x-%04x.%s",
2479 INTEL_CNVX_TOP_PACK_SWAB(INTEL_CNVX_TOP_TYPE(ver_tlv->cnvi_top),
2480 INTEL_CNVX_TOP_STEP(ver_tlv->cnvi_top)),
2481 INTEL_CNVX_TOP_PACK_SWAB(INTEL_CNVX_TOP_TYPE(ver_tlv->cnvr_top),
2482 INTEL_CNVX_TOP_STEP(ver_tlv->cnvr_top)),
2483 suffix);
2484}
2485
2486static int btusb_download_wait(struct hci_dev *hdev, ktime_t calltime, int msec)
2487{
2488 struct btusb_data *data = hci_get_drvdata(hdev);
2489 ktime_t delta, rettime;
2490 unsigned long long duration;
2491 int err;
2492
2493 set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2494
2495 bt_dev_info(hdev, "Waiting for firmware download to complete");
2496
2497 err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2498 TASK_INTERRUPTIBLE,
2499 msecs_to_jiffies(msec));
2500 if (err == -EINTR) {
2501 bt_dev_err(hdev, "Firmware loading interrupted");
2502 return err;
2503 }
2504
2505 if (err) {
2506 bt_dev_err(hdev, "Firmware loading timeout");
2507 return -ETIMEDOUT;
2508 }
2509
2510 if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2511 bt_dev_err(hdev, "Firmware loading failed");
2512 return -ENOEXEC;
2513 }
2514
2515 rettime = ktime_get();
2516 delta = ktime_sub(rettime, calltime);
2517 duration = (unsigned long long)ktime_to_ns(delta) >> 10;
2518
2519 bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2520
2521 return 0;
2522}
2523
2524static int btusb_intel_download_firmware_newgen(struct hci_dev *hdev,
2525 struct intel_version_tlv *ver,
2526 u32 *boot_param)
2527{
2528 const struct firmware *fw;
2529 char fwname[64];
2530 int err;
2531 struct btusb_data *data = hci_get_drvdata(hdev);
2532 ktime_t calltime;
2533
2534 if (!ver || !boot_param)
2535 return -EINVAL;
2536
2537 /* The firmware variant determines if the device is in bootloader
2538 * mode or is running operational firmware. The value 0x03 identifies
2539 * the bootloader and the value 0x23 identifies the operational
2540 * firmware.
2541 *
2542 * When the operational firmware is already present, then only
2543 * the check for valid Bluetooth device address is needed. This
2544 * determines if the device will be added as configured or
2545 * unconfigured controller.
2546 *
2547 * It is not possible to use the Secure Boot Parameters in this
2548 * case since that command is only available in bootloader mode.
2549 */
2550 if (ver->img_type == 0x03) {
2551 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2552 btintel_check_bdaddr(hdev);
2553 }
2554
2555 /* If the OTP has no valid Bluetooth device address, then there will
2556 * also be no valid address for the operational firmware.
2557 */
2558 if (!bacmp(&ver->otp_bd_addr, BDADDR_ANY)) {
2559 bt_dev_info(hdev, "No device address configured");
2560 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2561 }
2562
2563 btusb_setup_intel_newgen_get_fw_name(ver, fwname, sizeof(fwname), "sfi");
2564 err = firmware_request_nowarn(&fw, fwname, &hdev->dev);
2565 if (err < 0) {
2566 if (!test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2567 /* Firmware has already been loaded */
2568 set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2569 return 0;
2570 }
2571
2572 bt_dev_err(hdev, "Failed to load Intel firmware file %s (%d)",
2573 fwname, err);
2574
2575 return err;
2576 }
2577
2578 bt_dev_info(hdev, "Found device firmware: %s", fwname);
2579
2580 if (fw->size < 644) {
2581 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2582 fw->size);
2583 err = -EBADF;
2584 goto done;
2585 }
2586
2587 calltime = ktime_get();
2588
2589 set_bit(BTUSB_DOWNLOADING, &data->flags);
2590
2591 /* Start firmware downloading and get boot parameter */
2592 err = btintel_download_firmware_newgen(hdev, ver, fw, boot_param,
2593 INTEL_HW_VARIANT(ver->cnvi_bt),
2594 ver->sbe_type);
2595 if (err < 0) {
2596 if (err == -EALREADY) {
2597 /* Firmware has already been loaded */
2598 set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2599 err = 0;
2600 goto done;
2601 }
2602
2603 /* When FW download fails, send Intel Reset to retry
2604 * FW download.
2605 */
2606 btintel_reset_to_bootloader(hdev);
2607 goto done;
2608 }
2609
2610 /* Before switching the device into operational mode and with that
2611 * booting the loaded firmware, wait for the bootloader notification
2612 * that all fragments have been successfully received.
2613 *
2614 * When the event processing receives the notification, then the
2615 * BTUSB_DOWNLOADING flag will be cleared.
2616 *
2617 * The firmware loading should not take longer than 5 seconds
2618 * and thus just timeout if that happens and fail the setup
2619 * of this device.
2620 */
2621 err = btusb_download_wait(hdev, calltime, 5000);
2622 if (err == -ETIMEDOUT)
2623 btintel_reset_to_bootloader(hdev);
2624
2625done:
2626 release_firmware(fw);
2627 return err;
2628}
2629
2630static int btusb_intel_download_firmware(struct hci_dev *hdev,
2631 struct intel_version *ver,
2632 struct intel_boot_params *params,
2633 u32 *boot_param)
2634{
2635 const struct firmware *fw;
2636 char fwname[64];
2637 int err;
2638 struct btusb_data *data = hci_get_drvdata(hdev);
2639 ktime_t calltime;
2640
2641 if (!ver || !params)
2642 return -EINVAL;
2643
2644 /* The firmware variant determines if the device is in bootloader
2645 * mode or is running operational firmware. The value 0x06 identifies
2646 * the bootloader and the value 0x23 identifies the operational
2647 * firmware.
2648 *
2649 * When the operational firmware is already present, then only
2650 * the check for valid Bluetooth device address is needed. This
2651 * determines if the device will be added as configured or
2652 * unconfigured controller.
2653 *
2654 * It is not possible to use the Secure Boot Parameters in this
2655 * case since that command is only available in bootloader mode.
2656 */
2657 if (ver->fw_variant == 0x23) {
2658 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2659 btintel_check_bdaddr(hdev);
2660
2661 /* SfP and WsP don't seem to update the firmware version on file
2662 * so version checking is currently possible.
2663 */
2664 switch (ver->hw_variant) {
2665 case 0x0b: /* SfP */
2666 case 0x0c: /* WsP */
2667 return 0;
2668 }
2669
2670 /* Proceed to download to check if the version matches */
2671 goto download;
2672 }
2673
2674 /* Read the secure boot parameters to identify the operating
2675 * details of the bootloader.
2676 */
2677 err = btintel_read_boot_params(hdev, params);
2678 if (err)
2679 return err;
2680
2681 /* It is required that every single firmware fragment is acknowledged
2682 * with a command complete event. If the boot parameters indicate
2683 * that this bootloader does not send them, then abort the setup.
2684 */
2685 if (params->limited_cce != 0x00) {
2686 bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",
2687 params->limited_cce);
2688 return -EINVAL;
2689 }
2690
2691 /* If the OTP has no valid Bluetooth device address, then there will
2692 * also be no valid address for the operational firmware.
2693 */
2694 if (!bacmp(¶ms->otp_bdaddr, BDADDR_ANY)) {
2695 bt_dev_info(hdev, "No device address configured");
2696 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2697 }
2698
2699download:
2700 /* With this Intel bootloader only the hardware variant and device
2701 * revision information are used to select the right firmware for SfP
2702 * and WsP.
2703 *
2704 * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2705 *
2706 * Currently the supported hardware variants are:
2707 * 11 (0x0b) for iBT3.0 (LnP/SfP)
2708 * 12 (0x0c) for iBT3.5 (WsP)
2709 *
2710 * For ThP/JfP and for future SKU's, the FW name varies based on HW
2711 * variant, HW revision and FW revision, as these are dependent on CNVi
2712 * and RF Combination.
2713 *
2714 * 17 (0x11) for iBT3.5 (JfP)
2715 * 18 (0x12) for iBT3.5 (ThP)
2716 *
2717 * The firmware file name for these will be
2718 * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi.
2719 *
2720 */
2721 err = btusb_setup_intel_new_get_fw_name(ver, params, fwname,
2722 sizeof(fwname), "sfi");
2723 if (err < 0) {
2724 if (!test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2725 /* Firmware has already been loaded */
2726 set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2727 return 0;
2728 }
2729
2730 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2731 return -EINVAL;
2732 }
2733
2734 err = firmware_request_nowarn(&fw, fwname, &hdev->dev);
2735 if (err < 0) {
2736 if (!test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2737 /* Firmware has already been loaded */
2738 set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2739 return 0;
2740 }
2741
2742 bt_dev_err(hdev, "Failed to load Intel firmware file %s (%d)",
2743 fwname, err);
2744 return err;
2745 }
2746
2747 bt_dev_info(hdev, "Found device firmware: %s", fwname);
2748
2749 if (fw->size < 644) {
2750 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2751 fw->size);
2752 err = -EBADF;
2753 goto done;
2754 }
2755
2756 calltime = ktime_get();
2757
2758 set_bit(BTUSB_DOWNLOADING, &data->flags);
2759
2760 /* Start firmware downloading and get boot parameter */
2761 err = btintel_download_firmware(hdev, ver, fw, boot_param);
2762 if (err < 0) {
2763 if (err == -EALREADY) {
2764 /* Firmware has already been loaded */
2765 set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2766 err = 0;
2767 goto done;
2768 }
2769
2770 /* When FW download fails, send Intel Reset to retry
2771 * FW download.
2772 */
2773 btintel_reset_to_bootloader(hdev);
2774 goto done;
2775 }
2776
2777 /* Before switching the device into operational mode and with that
2778 * booting the loaded firmware, wait for the bootloader notification
2779 * that all fragments have been successfully received.
2780 *
2781 * When the event processing receives the notification, then the
2782 * BTUSB_DOWNLOADING flag will be cleared.
2783 *
2784 * The firmware loading should not take longer than 5 seconds
2785 * and thus just timeout if that happens and fail the setup
2786 * of this device.
2787 */
2788 err = btusb_download_wait(hdev, calltime, 5000);
2789 if (err == -ETIMEDOUT)
2790 btintel_reset_to_bootloader(hdev);
2791
2792done:
2793 release_firmware(fw);
2794 return err;
2795}
2796
2797static int btusb_boot_wait(struct hci_dev *hdev, ktime_t calltime, int msec)
2798{
2799 struct btusb_data *data = hci_get_drvdata(hdev);
2800 ktime_t delta, rettime;
2801 unsigned long long duration;
2802 int err;
2803
2804 bt_dev_info(hdev, "Waiting for device to boot");
2805
2806 err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2807 TASK_INTERRUPTIBLE,
2808 msecs_to_jiffies(msec));
2809 if (err == -EINTR) {
2810 bt_dev_err(hdev, "Device boot interrupted");
2811 return -EINTR;
2812 }
2813
2814 if (err) {
2815 bt_dev_err(hdev, "Device boot timeout");
2816 return -ETIMEDOUT;
2817 }
2818
2819 rettime = ktime_get();
2820 delta = ktime_sub(rettime, calltime);
2821 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2822
2823 bt_dev_info(hdev, "Device booted in %llu usecs", duration);
2824
2825 return 0;
2826}
2827
2828static int btusb_intel_boot(struct hci_dev *hdev, u32 boot_addr)
2829{
2830 struct btusb_data *data = hci_get_drvdata(hdev);
2831 ktime_t calltime;
2832 int err;
2833
2834 calltime = ktime_get();
2835
2836 set_bit(BTUSB_BOOTING, &data->flags);
2837
2838 err = btintel_send_intel_reset(hdev, boot_addr);
2839 if (err) {
2840 bt_dev_err(hdev, "Intel Soft Reset failed (%d)", err);
2841 btintel_reset_to_bootloader(hdev);
2842 return err;
2843 }
2844
2845 /* The bootloader will not indicate when the device is ready. This
2846 * is done by the operational firmware sending bootup notification.
2847 *
2848 * Booting into operational firmware should not take longer than
2849 * 1 second. However if that happens, then just fail the setup
2850 * since something went wrong.
2851 */
2852 err = btusb_boot_wait(hdev, calltime, 1000);
2853 if (err == -ETIMEDOUT)
2854 btintel_reset_to_bootloader(hdev);
2855
2856 return err;
2857}
2858
2859static int btusb_setup_intel_new(struct hci_dev *hdev)
2860{
2861 struct btusb_data *data = hci_get_drvdata(hdev);
2862 struct intel_version ver;
2863 struct intel_boot_params params;
2864 u32 boot_param;
2865 char ddcname[64];
2866 int err;
2867 struct intel_debug_features features;
2868
2869 BT_DBG("%s", hdev->name);
2870
2871 /* Set the default boot parameter to 0x0 and it is updated to
2872 * SKU specific boot parameter after reading Intel_Write_Boot_Params
2873 * command while downloading the firmware.
2874 */
2875 boot_param = 0x00000000;
2876
2877 /* Read the Intel version information to determine if the device
2878 * is in bootloader mode or if it already has operational firmware
2879 * loaded.
2880 */
2881 err = btintel_read_version(hdev, &ver);
2882 if (err) {
2883 bt_dev_err(hdev, "Intel Read version failed (%d)", err);
2884 btintel_reset_to_bootloader(hdev);
2885 return err;
2886 }
2887
2888 err = btintel_version_info(hdev, &ver);
2889 if (err)
2890 return err;
2891
2892 err = btusb_intel_download_firmware(hdev, &ver, ¶ms, &boot_param);
2893 if (err)
2894 return err;
2895
2896 /* controller is already having an operational firmware */
2897 if (ver.fw_variant == 0x23)
2898 goto finish;
2899
2900 err = btusb_intel_boot(hdev, boot_param);
2901 if (err)
2902 return err;
2903
2904 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2905
2906 err = btusb_setup_intel_new_get_fw_name(&ver, ¶ms, ddcname,
2907 sizeof(ddcname), "ddc");
2908
2909 if (err < 0) {
2910 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2911 } else {
2912 /* Once the device is running in operational mode, it needs to
2913 * apply the device configuration (DDC) parameters.
2914 *
2915 * The device can work without DDC parameters, so even if it
2916 * fails to load the file, no need to fail the setup.
2917 */
2918 btintel_load_ddc_config(hdev, ddcname);
2919 }
2920
2921 /* Read the Intel supported features and if new exception formats
2922 * supported, need to load the additional DDC config to enable.
2923 */
2924 err = btintel_read_debug_features(hdev, &features);
2925 if (!err) {
2926 /* Set DDC mask for available debug features */
2927 btintel_set_debug_features(hdev, &features);
2928 }
2929
2930 /* Read the Intel version information after loading the FW */
2931 err = btintel_read_version(hdev, &ver);
2932 if (err)
2933 return err;
2934
2935 btintel_version_info(hdev, &ver);
2936
2937finish:
2938 /* All Intel controllers that support the Microsoft vendor
2939 * extension are using 0xFC1E for VsMsftOpCode.
2940 */
2941 switch (ver.hw_variant) {
2942 case 0x11: /* JfP */
2943 case 0x12: /* ThP */
2944 case 0x13: /* HrP */
2945 case 0x14: /* CcP */
2946 hci_set_msft_opcode(hdev, 0xFC1E);
2947 break;
2948 }
2949
2950 /* Set the event mask for Intel specific vendor events. This enables
2951 * a few extra events that are useful during general operation. It
2952 * does not enable any debugging related events.
2953 *
2954 * The device will function correctly without these events enabled
2955 * and thus no need to fail the setup.
2956 */
2957 btintel_set_event_mask(hdev, false);
2958
2959 return 0;
2960}
2961
2962static int btusb_setup_intel_newgen(struct hci_dev *hdev)
2963{
2964 struct btusb_data *data = hci_get_drvdata(hdev);
2965 u32 boot_param;
2966 char ddcname[64];
2967 int err;
2968 struct intel_debug_features features;
2969 struct intel_version_tlv version;
2970
2971 bt_dev_dbg(hdev, "");
2972
2973 /* Set the default boot parameter to 0x0 and it is updated to
2974 * SKU specific boot parameter after reading Intel_Write_Boot_Params
2975 * command while downloading the firmware.
2976 */
2977 boot_param = 0x00000000;
2978
2979 /* Read the Intel version information to determine if the device
2980 * is in bootloader mode or if it already has operational firmware
2981 * loaded.
2982 */
2983 err = btintel_read_version_tlv(hdev, &version);
2984 if (err) {
2985 bt_dev_err(hdev, "Intel Read version failed (%d)", err);
2986 btintel_reset_to_bootloader(hdev);
2987 return err;
2988 }
2989
2990 err = btintel_version_info_tlv(hdev, &version);
2991 if (err)
2992 return err;
2993
2994 err = btusb_intel_download_firmware_newgen(hdev, &version, &boot_param);
2995 if (err)
2996 return err;
2997
2998 /* check if controller is already having an operational firmware */
2999 if (version.img_type == 0x03)
3000 goto finish;
3001
3002 err = btusb_intel_boot(hdev, boot_param);
3003 if (err)
3004 return err;
3005
3006 clear_bit(BTUSB_BOOTLOADER, &data->flags);
3007
3008 btusb_setup_intel_newgen_get_fw_name(&version, ddcname, sizeof(ddcname),
3009 "ddc");
3010 /* Once the device is running in operational mode, it needs to
3011 * apply the device configuration (DDC) parameters.
3012 *
3013 * The device can work without DDC parameters, so even if it
3014 * fails to load the file, no need to fail the setup.
3015 */
3016 btintel_load_ddc_config(hdev, ddcname);
3017
3018 /* Read the Intel supported features and if new exception formats
3019 * supported, need to load the additional DDC config to enable.
3020 */
3021 err = btintel_read_debug_features(hdev, &features);
3022 if (!err) {
3023 /* Set DDC mask for available debug features */
3024 btintel_set_debug_features(hdev, &features);
3025 }
3026
3027 /* Read the Intel version information after loading the FW */
3028 err = btintel_read_version_tlv(hdev, &version);
3029 if (err)
3030 return err;
3031
3032 btintel_version_info_tlv(hdev, &version);
3033
3034finish:
3035 /* Set the event mask for Intel specific vendor events. This enables
3036 * a few extra events that are useful during general operation. It
3037 * does not enable any debugging related events.
3038 *
3039 * The device will function correctly without these events enabled
3040 * and thus no need to fail the setup.
3041 */
3042 btintel_set_event_mask(hdev, false);
3043
3044 return 0;
3045}
3046static int btusb_shutdown_intel(struct hci_dev *hdev)
3047{
3048 struct sk_buff *skb;
3049 long ret;
3050
3051 /* In the shutdown sequence where Bluetooth is turned off followed
3052 * by WiFi being turned off, turning WiFi back on causes issue with
3053 * the RF calibration.
3054 *
3055 * To ensure that any RF activity has been stopped, issue HCI Reset
3056 * command to clear all ongoing activity including advertising,
3057 * scanning etc.
3058 */
3059 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
3060 if (IS_ERR(skb)) {
3061 ret = PTR_ERR(skb);
3062 bt_dev_err(hdev, "HCI reset during shutdown failed");
3063 return ret;
3064 }
3065 kfree_skb(skb);
3066
3067 /* Some platforms have an issue with BT LED when the interface is
3068 * down or BT radio is turned off, which takes 5 seconds to BT LED
3069 * goes off. This command turns off the BT LED immediately.
3070 */
3071 skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
3072 if (IS_ERR(skb)) {
3073 ret = PTR_ERR(skb);
3074 bt_dev_err(hdev, "turning off Intel device LED failed");
3075 return ret;
3076 }
3077 kfree_skb(skb);
3078
3079 return 0;
3080}
3081
3082static int btusb_shutdown_intel_new(struct hci_dev *hdev)
3083{
3084 struct sk_buff *skb;
3085
3086 /* Send HCI Reset to the controller to stop any BT activity which
3087 * were triggered. This will help to save power and maintain the
3088 * sync b/w Host and controller
3089 */
3090 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
3091 if (IS_ERR(skb)) {
3092 bt_dev_err(hdev, "HCI reset during shutdown failed");
3093 return PTR_ERR(skb);
3094 }
3095 kfree_skb(skb);
3096
3097 return 0;
3098}
3099
3100#define FIRMWARE_MT7663 "mediatek/mt7663pr2h.bin"
3101#define FIRMWARE_MT7668 "mediatek/mt7668pr2h.bin"
3102
3103#define HCI_WMT_MAX_EVENT_SIZE 64
3104/* It is for mt79xx download rom patch*/
3105#define MTK_FW_ROM_PATCH_HEADER_SIZE 32
3106#define MTK_FW_ROM_PATCH_GD_SIZE 64
3107#define MTK_FW_ROM_PATCH_SEC_MAP_SIZE 64
3108#define MTK_SEC_MAP_COMMON_SIZE 12
3109#define MTK_SEC_MAP_NEED_SEND_SIZE 52
3110
3111enum {
3112 BTMTK_WMT_PATCH_DWNLD = 0x1,
3113 BTMTK_WMT_FUNC_CTRL = 0x6,
3114 BTMTK_WMT_RST = 0x7,
3115 BTMTK_WMT_SEMAPHORE = 0x17,
3116};
3117
3118enum {
3119 BTMTK_WMT_INVALID,
3120 BTMTK_WMT_PATCH_UNDONE,
3121 BTMTK_WMT_PATCH_PROGRESS,
3122 BTMTK_WMT_PATCH_DONE,
3123 BTMTK_WMT_ON_UNDONE,
3124 BTMTK_WMT_ON_DONE,
3125 BTMTK_WMT_ON_PROGRESS,
3126};
3127
3128struct btmtk_wmt_hdr {
3129 u8 dir;
3130 u8 op;
3131 __le16 dlen;
3132 u8 flag;
3133} __packed;
3134
3135struct btmtk_hci_wmt_cmd {
3136 struct btmtk_wmt_hdr hdr;
3137 u8 data[];
3138} __packed;
3139
3140struct btmtk_hci_wmt_evt {
3141 struct hci_event_hdr hhdr;
3142 struct btmtk_wmt_hdr whdr;
3143} __packed;
3144
3145struct btmtk_hci_wmt_evt_funcc {
3146 struct btmtk_hci_wmt_evt hwhdr;
3147 __be16 status;
3148} __packed;
3149
3150struct btmtk_tci_sleep {
3151 u8 mode;
3152 __le16 duration;
3153 __le16 host_duration;
3154 u8 host_wakeup_pin;
3155 u8 time_compensation;
3156} __packed;
3157
3158struct btmtk_hci_wmt_params {
3159 u8 op;
3160 u8 flag;
3161 u16 dlen;
3162 const void *data;
3163 u32 *status;
3164};
3165
3166struct btmtk_patch_header {
3167 u8 datetime[16];
3168 u8 platform[4];
3169 __le16 hwver;
3170 __le16 swver;
3171 __le32 magicnum;
3172} __packed;
3173
3174struct btmtk_global_desc {
3175 __le32 patch_ver;
3176 __le32 sub_sys;
3177 __le32 feature_opt;
3178 __le32 section_num;
3179} __packed;
3180
3181struct btmtk_section_map {
3182 __le32 sectype;
3183 __le32 secoffset;
3184 __le32 secsize;
3185 union {
3186 __le32 u4SecSpec[13];
3187 struct {
3188 __le32 dlAddr;
3189 __le32 dlsize;
3190 __le32 seckeyidx;
3191 __le32 alignlen;
3192 __le32 sectype;
3193 __le32 dlmodecrctype;
3194 __le32 crc;
3195 __le32 reserved[6];
3196 } bin_info_spec;
3197 };
3198} __packed;
3199
3200static void btusb_mtk_wmt_recv(struct urb *urb)
3201{
3202 struct hci_dev *hdev = urb->context;
3203 struct btusb_data *data = hci_get_drvdata(hdev);
3204 struct hci_event_hdr *hdr;
3205 struct sk_buff *skb;
3206 int err;
3207
3208 if (urb->status == 0 && urb->actual_length > 0) {
3209 hdev->stat.byte_rx += urb->actual_length;
3210
3211 /* WMT event shouldn't be fragmented and the size should be
3212 * less than HCI_WMT_MAX_EVENT_SIZE.
3213 */
3214 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
3215 if (!skb) {
3216 hdev->stat.err_rx++;
3217 return;
3218 }
3219
3220 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
3221 skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
3222
3223 hdr = (void *)skb->data;
3224 /* Fix up the vendor event id with 0xff for vendor specific
3225 * instead of 0xe4 so that event send via monitoring socket can
3226 * be parsed properly.
3227 */
3228 hdr->evt = 0xff;
3229
3230 /* When someone waits for the WMT event, the skb is being cloned
3231 * and being processed the events from there then.
3232 */
3233 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
3234 data->evt_skb = skb_clone(skb, GFP_ATOMIC);
3235 if (!data->evt_skb) {
3236 kfree_skb(skb);
3237 return;
3238 }
3239 }
3240
3241 err = hci_recv_frame(hdev, skb);
3242 if (err < 0) {
3243 kfree_skb(data->evt_skb);
3244 data->evt_skb = NULL;
3245 return;
3246 }
3247
3248 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
3249 &data->flags)) {
3250 /* Barrier to sync with other CPUs */
3251 smp_mb__after_atomic();
3252 wake_up_bit(&data->flags,
3253 BTUSB_TX_WAIT_VND_EVT);
3254 }
3255 return;
3256 } else if (urb->status == -ENOENT) {
3257 /* Avoid suspend failed when usb_kill_urb */
3258 return;
3259 }
3260
3261 usb_mark_last_busy(data->udev);
3262
3263 /* The URB complete handler is still called with urb->actual_length = 0
3264 * when the event is not available, so we should keep re-submitting
3265 * URB until WMT event returns, Also, It's necessary to wait some time
3266 * between the two consecutive control URBs to relax the target device
3267 * to generate the event. Otherwise, the WMT event cannot return from
3268 * the device successfully.
3269 */
3270 udelay(500);
3271
3272 usb_anchor_urb(urb, &data->ctrl_anchor);
3273 err = usb_submit_urb(urb, GFP_ATOMIC);
3274 if (err < 0) {
3275 /* -EPERM: urb is being killed;
3276 * -ENODEV: device got disconnected
3277 */
3278 if (err != -EPERM && err != -ENODEV)
3279 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
3280 urb, -err);
3281 usb_unanchor_urb(urb);
3282 }
3283}
3284
3285static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
3286{
3287 struct btusb_data *data = hci_get_drvdata(hdev);
3288 struct usb_ctrlrequest *dr;
3289 unsigned char *buf;
3290 int err, size = 64;
3291 unsigned int pipe;
3292 struct urb *urb;
3293
3294 urb = usb_alloc_urb(0, GFP_KERNEL);
3295 if (!urb)
3296 return -ENOMEM;
3297
3298 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
3299 if (!dr) {
3300 usb_free_urb(urb);
3301 return -ENOMEM;
3302 }
3303
3304 dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
3305 dr->bRequest = 1;
3306 dr->wIndex = cpu_to_le16(0);
3307 dr->wValue = cpu_to_le16(48);
3308 dr->wLength = cpu_to_le16(size);
3309
3310 buf = kmalloc(size, GFP_KERNEL);
3311 if (!buf) {
3312 kfree(dr);
3313 usb_free_urb(urb);
3314 return -ENOMEM;
3315 }
3316
3317 pipe = usb_rcvctrlpipe(data->udev, 0);
3318
3319 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
3320 buf, size, btusb_mtk_wmt_recv, hdev);
3321
3322 urb->transfer_flags |= URB_FREE_BUFFER;
3323
3324 usb_anchor_urb(urb, &data->ctrl_anchor);
3325 err = usb_submit_urb(urb, GFP_KERNEL);
3326 if (err < 0) {
3327 if (err != -EPERM && err != -ENODEV)
3328 bt_dev_err(hdev, "urb %p submission failed (%d)",
3329 urb, -err);
3330 usb_unanchor_urb(urb);
3331 }
3332
3333 usb_free_urb(urb);
3334
3335 return err;
3336}
3337
3338static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
3339 struct btmtk_hci_wmt_params *wmt_params)
3340{
3341 struct btusb_data *data = hci_get_drvdata(hdev);
3342 struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
3343 u32 hlen, status = BTMTK_WMT_INVALID;
3344 struct btmtk_hci_wmt_evt *wmt_evt;
3345 struct btmtk_hci_wmt_cmd *wc;
3346 struct btmtk_wmt_hdr *hdr;
3347 int err;
3348
3349 /* Send the WMT command and wait until the WMT event returns */
3350 hlen = sizeof(*hdr) + wmt_params->dlen;
3351 if (hlen > 255)
3352 return -EINVAL;
3353
3354 wc = kzalloc(hlen, GFP_KERNEL);
3355 if (!wc)
3356 return -ENOMEM;
3357
3358 hdr = &wc->hdr;
3359 hdr->dir = 1;
3360 hdr->op = wmt_params->op;
3361 hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
3362 hdr->flag = wmt_params->flag;
3363 memcpy(wc->data, wmt_params->data, wmt_params->dlen);
3364
3365 set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
3366
3367 err = __hci_cmd_send(hdev, 0xfc6f, hlen, wc);
3368
3369 if (err < 0) {
3370 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
3371 goto err_free_wc;
3372 }
3373
3374 /* Submit control IN URB on demand to process the WMT event */
3375 err = btusb_mtk_submit_wmt_recv_urb(hdev);
3376 if (err < 0)
3377 goto err_free_wc;
3378
3379 /* The vendor specific WMT commands are all answered by a vendor
3380 * specific event and will have the Command Status or Command
3381 * Complete as with usual HCI command flow control.
3382 *
3383 * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
3384 * state to be cleared. The driver specific event receive routine
3385 * will clear that state and with that indicate completion of the
3386 * WMT command.
3387 */
3388 err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
3389 TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
3390 if (err == -EINTR) {
3391 bt_dev_err(hdev, "Execution of wmt command interrupted");
3392 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
3393 goto err_free_wc;
3394 }
3395
3396 if (err) {
3397 bt_dev_err(hdev, "Execution of wmt command timed out");
3398 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
3399 err = -ETIMEDOUT;
3400 goto err_free_wc;
3401 }
3402
3403 /* Parse and handle the return WMT event */
3404 wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
3405 if (wmt_evt->whdr.op != hdr->op) {
3406 bt_dev_err(hdev, "Wrong op received %d expected %d",
3407 wmt_evt->whdr.op, hdr->op);
3408 err = -EIO;
3409 goto err_free_skb;
3410 }
3411
3412 switch (wmt_evt->whdr.op) {
3413 case BTMTK_WMT_SEMAPHORE:
3414 if (wmt_evt->whdr.flag == 2)
3415 status = BTMTK_WMT_PATCH_UNDONE;
3416 else
3417 status = BTMTK_WMT_PATCH_DONE;
3418 break;
3419 case BTMTK_WMT_FUNC_CTRL:
3420 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
3421 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
3422 status = BTMTK_WMT_ON_DONE;
3423 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
3424 status = BTMTK_WMT_ON_PROGRESS;
3425 else
3426 status = BTMTK_WMT_ON_UNDONE;
3427 break;
3428 case BTMTK_WMT_PATCH_DWNLD:
3429 if (wmt_evt->whdr.flag == 2)
3430 status = BTMTK_WMT_PATCH_DONE;
3431 else if (wmt_evt->whdr.flag == 1)
3432 status = BTMTK_WMT_PATCH_PROGRESS;
3433 else
3434 status = BTMTK_WMT_PATCH_UNDONE;
3435 break;
3436 }
3437
3438 if (wmt_params->status)
3439 *wmt_params->status = status;
3440
3441err_free_skb:
3442 kfree_skb(data->evt_skb);
3443 data->evt_skb = NULL;
3444err_free_wc:
3445 kfree(wc);
3446 return err;
3447}
3448
3449static int btusb_mtk_setup_firmware_79xx(struct hci_dev *hdev, const char *fwname)
3450{
3451 struct btmtk_hci_wmt_params wmt_params;
3452 struct btmtk_global_desc *globaldesc = NULL;
3453 struct btmtk_section_map *sectionmap;
3454 const struct firmware *fw;
3455 const u8 *fw_ptr;
3456 const u8 *fw_bin_ptr;
3457 int err, dlen, i, status;
3458 u8 flag, first_block, retry;
3459 u32 section_num, dl_size, section_offset;
3460 u8 cmd[64];
3461
3462 err = request_firmware(&fw, fwname, &hdev->dev);
3463 if (err < 0) {
3464 bt_dev_err(hdev, "Failed to load firmware file (%d)", err);
3465 return err;
3466 }
3467
3468 fw_ptr = fw->data;
3469 fw_bin_ptr = fw_ptr;
3470 globaldesc = (struct btmtk_global_desc *)(fw_ptr + MTK_FW_ROM_PATCH_HEADER_SIZE);
3471 section_num = le32_to_cpu(globaldesc->section_num);
3472
3473 for (i = 0; i < section_num; i++) {
3474 first_block = 1;
3475 fw_ptr = fw_bin_ptr;
3476 sectionmap = (struct btmtk_section_map *)(fw_ptr + MTK_FW_ROM_PATCH_HEADER_SIZE +
3477 MTK_FW_ROM_PATCH_GD_SIZE + MTK_FW_ROM_PATCH_SEC_MAP_SIZE * i);
3478
3479 section_offset = le32_to_cpu(sectionmap->secoffset);
3480 dl_size = le32_to_cpu(sectionmap->bin_info_spec.dlsize);
3481
3482 if (dl_size > 0) {
3483 retry = 20;
3484 while (retry > 0) {
3485 cmd[0] = 0; /* 0 means legacy dl mode. */
3486 memcpy(cmd + 1,
3487 fw_ptr + MTK_FW_ROM_PATCH_HEADER_SIZE +
3488 MTK_FW_ROM_PATCH_GD_SIZE + MTK_FW_ROM_PATCH_SEC_MAP_SIZE * i +
3489 MTK_SEC_MAP_COMMON_SIZE,
3490 MTK_SEC_MAP_NEED_SEND_SIZE + 1);
3491
3492 wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
3493 wmt_params.status = &status;
3494 wmt_params.flag = 0;
3495 wmt_params.dlen = MTK_SEC_MAP_NEED_SEND_SIZE + 1;
3496 wmt_params.data = &cmd;
3497
3498 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3499 if (err < 0) {
3500 bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
3501 err);
3502 goto err_release_fw;
3503 }
3504
3505 if (status == BTMTK_WMT_PATCH_UNDONE) {
3506 break;
3507 } else if (status == BTMTK_WMT_PATCH_PROGRESS) {
3508 msleep(100);
3509 retry--;
3510 } else if (status == BTMTK_WMT_PATCH_DONE) {
3511 goto next_section;
3512 } else {
3513 bt_dev_err(hdev, "Failed wmt patch dwnld status (%d)",
3514 status);
3515 goto err_release_fw;
3516 }
3517 }
3518
3519 fw_ptr += section_offset;
3520 wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
3521 wmt_params.status = NULL;
3522
3523 while (dl_size > 0) {
3524 dlen = min_t(int, 250, dl_size);
3525 if (first_block == 1) {
3526 flag = 1;
3527 first_block = 0;
3528 } else if (dl_size - dlen <= 0) {
3529 flag = 3;
3530 } else {
3531 flag = 2;
3532 }
3533
3534 wmt_params.flag = flag;
3535 wmt_params.dlen = dlen;
3536 wmt_params.data = fw_ptr;
3537
3538 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3539 if (err < 0) {
3540 bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
3541 err);
3542 goto err_release_fw;
3543 }
3544
3545 dl_size -= dlen;
3546 fw_ptr += dlen;
3547 }
3548 }
3549next_section:
3550 continue;
3551 }
3552 /* Wait a few moments for firmware activation done */
3553 usleep_range(100000, 120000);
3554
3555err_release_fw:
3556 release_firmware(fw);
3557
3558 return err;
3559}
3560
3561static int btusb_mtk_setup_firmware(struct hci_dev *hdev, const char *fwname)
3562{
3563 struct btmtk_hci_wmt_params wmt_params;
3564 const struct firmware *fw;
3565 const u8 *fw_ptr;
3566 size_t fw_size;
3567 int err, dlen;
3568 u8 flag, param;
3569
3570 err = request_firmware(&fw, fwname, &hdev->dev);
3571 if (err < 0) {
3572 bt_dev_err(hdev, "Failed to load firmware file (%d)", err);
3573 return err;
3574 }
3575
3576 /* Power on data RAM the firmware relies on. */
3577 param = 1;
3578 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3579 wmt_params.flag = 3;
3580 wmt_params.dlen = sizeof(param);
3581 wmt_params.data = ¶m;
3582 wmt_params.status = NULL;
3583
3584 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3585 if (err < 0) {
3586 bt_dev_err(hdev, "Failed to power on data RAM (%d)", err);
3587 goto err_release_fw;
3588 }
3589
3590 fw_ptr = fw->data;
3591 fw_size = fw->size;
3592
3593 /* The size of patch header is 30 bytes, should be skip */
3594 if (fw_size < 30) {
3595 err = -EINVAL;
3596 goto err_release_fw;
3597 }
3598
3599 fw_size -= 30;
3600 fw_ptr += 30;
3601 flag = 1;
3602
3603 wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
3604 wmt_params.status = NULL;
3605
3606 while (fw_size > 0) {
3607 dlen = min_t(int, 250, fw_size);
3608
3609 /* Tell device the position in sequence */
3610 if (fw_size - dlen <= 0)
3611 flag = 3;
3612 else if (fw_size < fw->size - 30)
3613 flag = 2;
3614
3615 wmt_params.flag = flag;
3616 wmt_params.dlen = dlen;
3617 wmt_params.data = fw_ptr;
3618
3619 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3620 if (err < 0) {
3621 bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
3622 err);
3623 goto err_release_fw;
3624 }
3625
3626 fw_size -= dlen;
3627 fw_ptr += dlen;
3628 }
3629
3630 wmt_params.op = BTMTK_WMT_RST;
3631 wmt_params.flag = 4;
3632 wmt_params.dlen = 0;
3633 wmt_params.data = NULL;
3634 wmt_params.status = NULL;
3635
3636 /* Activate funciton the firmware providing to */
3637 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3638 if (err < 0) {
3639 bt_dev_err(hdev, "Failed to send wmt rst (%d)", err);
3640 goto err_release_fw;
3641 }
3642
3643 /* Wait a few moments for firmware activation done */
3644 usleep_range(10000, 12000);
3645
3646err_release_fw:
3647 release_firmware(fw);
3648
3649 return err;
3650}
3651
3652static int btusb_mtk_func_query(struct hci_dev *hdev)
3653{
3654 struct btmtk_hci_wmt_params wmt_params;
3655 int status, err;
3656 u8 param = 0;
3657
3658 /* Query whether the function is enabled */
3659 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3660 wmt_params.flag = 4;
3661 wmt_params.dlen = sizeof(param);
3662 wmt_params.data = ¶m;
3663 wmt_params.status = &status;
3664
3665 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3666 if (err < 0) {
3667 bt_dev_err(hdev, "Failed to query function status (%d)", err);
3668 return err;
3669 }
3670
3671 return status;
3672}
3673
3674static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
3675{
3676 int pipe, err, size = sizeof(u32);
3677 void *buf;
3678
3679 buf = kzalloc(size, GFP_KERNEL);
3680 if (!buf)
3681 return -ENOMEM;
3682
3683 pipe = usb_rcvctrlpipe(data->udev, 0);
3684 err = usb_control_msg(data->udev, pipe, 0x63,
3685 USB_TYPE_VENDOR | USB_DIR_IN,
3686 reg >> 16, reg & 0xffff,
3687 buf, size, USB_CTRL_SET_TIMEOUT);
3688 if (err < 0)
3689 goto err_free_buf;
3690
3691 *val = get_unaligned_le32(buf);
3692
3693err_free_buf:
3694 kfree(buf);
3695
3696 return err;
3697}
3698
3699static int btusb_mtk_id_get(struct btusb_data *data, u32 reg, u32 *id)
3700{
3701 return btusb_mtk_reg_read(data, reg, id);
3702}
3703
3704static int btusb_mtk_setup(struct hci_dev *hdev)
3705{
3706 struct btusb_data *data = hci_get_drvdata(hdev);
3707 struct btmtk_hci_wmt_params wmt_params;
3708 ktime_t calltime, delta, rettime;
3709 struct btmtk_tci_sleep tci_sleep;
3710 unsigned long long duration;
3711 struct sk_buff *skb;
3712 const char *fwname;
3713 int err, status;
3714 u32 dev_id;
3715 char fw_bin_name[64];
3716 u32 fw_version = 0;
3717 u8 param;
3718
3719 calltime = ktime_get();
3720
3721 err = btusb_mtk_id_get(data, 0x80000008, &dev_id);
3722 if (err < 0) {
3723 bt_dev_err(hdev, "Failed to get device id (%d)", err);
3724 return err;
3725 }
3726
3727 if (!dev_id) {
3728 err = btusb_mtk_id_get(data, 0x70010200, &dev_id);
3729 if (err < 0) {
3730 bt_dev_err(hdev, "Failed to get device id (%d)", err);
3731 return err;
3732 }
3733 err = btusb_mtk_id_get(data, 0x80021004, &fw_version);
3734 if (err < 0) {
3735 bt_dev_err(hdev, "Failed to get fw version (%d)", err);
3736 return err;
3737 }
3738 }
3739
3740 switch (dev_id) {
3741 case 0x7663:
3742 fwname = FIRMWARE_MT7663;
3743 break;
3744 case 0x7668:
3745 fwname = FIRMWARE_MT7668;
3746 break;
3747 case 0x7961:
3748 snprintf(fw_bin_name, sizeof(fw_bin_name),
3749 "mediatek/BT_RAM_CODE_MT%04x_1_%x_hdr.bin",
3750 dev_id & 0xffff, (fw_version & 0xff) + 1);
3751 err = btusb_mtk_setup_firmware_79xx(hdev, fw_bin_name);
3752
3753 /* Enable Bluetooth protocol */
3754 param = 1;
3755 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3756 wmt_params.flag = 0;
3757 wmt_params.dlen = sizeof(param);
3758 wmt_params.data = ¶m;
3759 wmt_params.status = NULL;
3760
3761 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3762 if (err < 0) {
3763 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3764 return err;
3765 }
3766 goto done;
3767 default:
3768 bt_dev_err(hdev, "Unsupported hardware variant (%08x)",
3769 dev_id);
3770 return -ENODEV;
3771 }
3772
3773 /* Query whether the firmware is already download */
3774 wmt_params.op = BTMTK_WMT_SEMAPHORE;
3775 wmt_params.flag = 1;
3776 wmt_params.dlen = 0;
3777 wmt_params.data = NULL;
3778 wmt_params.status = &status;
3779
3780 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3781 if (err < 0) {
3782 bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
3783 return err;
3784 }
3785
3786 if (status == BTMTK_WMT_PATCH_DONE) {
3787 bt_dev_info(hdev, "firmware already downloaded");
3788 goto ignore_setup_fw;
3789 }
3790
3791 /* Setup a firmware which the device definitely requires */
3792 err = btusb_mtk_setup_firmware(hdev, fwname);
3793 if (err < 0)
3794 return err;
3795
3796ignore_setup_fw:
3797 err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
3798 status < 0 || status != BTMTK_WMT_ON_PROGRESS,
3799 2000, 5000000);
3800 /* -ETIMEDOUT happens */
3801 if (err < 0)
3802 return err;
3803
3804 /* The other errors happen in btusb_mtk_func_query */
3805 if (status < 0)
3806 return status;
3807
3808 if (status == BTMTK_WMT_ON_DONE) {
3809 bt_dev_info(hdev, "function already on");
3810 goto ignore_func_on;
3811 }
3812
3813 /* Enable Bluetooth protocol */
3814 param = 1;
3815 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3816 wmt_params.flag = 0;
3817 wmt_params.dlen = sizeof(param);
3818 wmt_params.data = ¶m;
3819 wmt_params.status = NULL;
3820
3821 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3822 if (err < 0) {
3823 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3824 return err;
3825 }
3826
3827ignore_func_on:
3828 /* Apply the low power environment setup */
3829 tci_sleep.mode = 0x5;
3830 tci_sleep.duration = cpu_to_le16(0x640);
3831 tci_sleep.host_duration = cpu_to_le16(0x640);
3832 tci_sleep.host_wakeup_pin = 0;
3833 tci_sleep.time_compensation = 0;
3834
3835 skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
3836 HCI_INIT_TIMEOUT);
3837 if (IS_ERR(skb)) {
3838 err = PTR_ERR(skb);
3839 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
3840 return err;
3841 }
3842 kfree_skb(skb);
3843
3844done:
3845 rettime = ktime_get();
3846 delta = ktime_sub(rettime, calltime);
3847 duration = (unsigned long long)ktime_to_ns(delta) >> 10;
3848
3849 bt_dev_info(hdev, "Device setup in %llu usecs", duration);
3850
3851 return 0;
3852}
3853
3854static int btusb_mtk_shutdown(struct hci_dev *hdev)
3855{
3856 struct btmtk_hci_wmt_params wmt_params;
3857 u8 param = 0;
3858 int err;
3859
3860 /* Disable the device */
3861 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3862 wmt_params.flag = 0;
3863 wmt_params.dlen = sizeof(param);
3864 wmt_params.data = ¶m;
3865 wmt_params.status = NULL;
3866
3867 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3868 if (err < 0) {
3869 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3870 return err;
3871 }
3872
3873 return 0;
3874}
3875
3876MODULE_FIRMWARE(FIRMWARE_MT7663);
3877MODULE_FIRMWARE(FIRMWARE_MT7668);
3878
3879#ifdef CONFIG_PM
3880/* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
3881static int marvell_config_oob_wake(struct hci_dev *hdev)
3882{
3883 struct sk_buff *skb;
3884 struct btusb_data *data = hci_get_drvdata(hdev);
3885 struct device *dev = &data->udev->dev;
3886 u16 pin, gap, opcode;
3887 int ret;
3888 u8 cmd[5];
3889
3890 /* Move on if no wakeup pin specified */
3891 if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
3892 of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
3893 return 0;
3894
3895 /* Vendor specific command to configure a GPIO as wake-up pin */
3896 opcode = hci_opcode_pack(0x3F, 0x59);
3897 cmd[0] = opcode & 0xFF;
3898 cmd[1] = opcode >> 8;
3899 cmd[2] = 2; /* length of parameters that follow */
3900 cmd[3] = pin;
3901 cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
3902
3903 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
3904 if (!skb) {
3905 bt_dev_err(hdev, "%s: No memory", __func__);
3906 return -ENOMEM;
3907 }
3908
3909 skb_put_data(skb, cmd, sizeof(cmd));
3910 hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
3911
3912 ret = btusb_send_frame(hdev, skb);
3913 if (ret) {
3914 bt_dev_err(hdev, "%s: configuration failed", __func__);
3915 kfree_skb(skb);
3916 return ret;
3917 }
3918
3919 return 0;
3920}
3921#endif
3922
3923static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
3924 const bdaddr_t *bdaddr)
3925{
3926 struct sk_buff *skb;
3927 u8 buf[8];
3928 long ret;
3929
3930 buf[0] = 0xfe;
3931 buf[1] = sizeof(bdaddr_t);
3932 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
3933
3934 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3935 if (IS_ERR(skb)) {
3936 ret = PTR_ERR(skb);
3937 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
3938 ret);
3939 return ret;
3940 }
3941 kfree_skb(skb);
3942
3943 return 0;
3944}
3945
3946static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3947 const bdaddr_t *bdaddr)
3948{
3949 struct sk_buff *skb;
3950 u8 buf[10];
3951 long ret;
3952
3953 buf[0] = 0x01;
3954 buf[1] = 0x01;
3955 buf[2] = 0x00;
3956 buf[3] = sizeof(bdaddr_t);
3957 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3958
3959 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3960 if (IS_ERR(skb)) {
3961 ret = PTR_ERR(skb);
3962 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3963 return ret;
3964 }
3965 kfree_skb(skb);
3966
3967 return 0;
3968}
3969
3970static int btusb_set_bdaddr_wcn6855(struct hci_dev *hdev,
3971 const bdaddr_t *bdaddr)
3972{
3973 struct sk_buff *skb;
3974 u8 buf[6];
3975 long ret;
3976
3977 memcpy(buf, bdaddr, sizeof(bdaddr_t));
3978
3979 skb = __hci_cmd_sync_ev(hdev, 0xfc14, sizeof(buf), buf,
3980 HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
3981 if (IS_ERR(skb)) {
3982 ret = PTR_ERR(skb);
3983 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3984 return ret;
3985 }
3986 kfree_skb(skb);
3987
3988 return 0;
3989}
3990
3991#define QCA_DFU_PACKET_LEN 4096
3992
3993#define QCA_GET_TARGET_VERSION 0x09
3994#define QCA_CHECK_STATUS 0x05
3995#define QCA_DFU_DOWNLOAD 0x01
3996
3997#define QCA_SYSCFG_UPDATED 0x40
3998#define QCA_PATCH_UPDATED 0x80
3999#define QCA_DFU_TIMEOUT 3000
4000#define QCA_FLAG_MULTI_NVM 0x80
4001
4002struct qca_version {
4003 __le32 rom_version;
4004 __le32 patch_version;
4005 __le32 ram_version;
4006 __le16 board_id;
4007 __le16 flag;
4008 __u8 reserved[4];
4009} __packed;
4010
4011struct qca_rampatch_version {
4012 __le16 rom_version_high;
4013 __le16 rom_version_low;
4014 __le16 patch_version;
4015} __packed;
4016
4017struct qca_device_info {
4018 u32 rom_version;
4019 u8 rampatch_hdr; /* length of header in rampatch */
4020 u8 nvm_hdr; /* length of header in NVM */
4021 u8 ver_offset; /* offset of version structure in rampatch */
4022};
4023
4024static const struct qca_device_info qca_devices_table[] = {
4025 { 0x00000100, 20, 4, 8 }, /* Rome 1.0 */
4026 { 0x00000101, 20, 4, 8 }, /* Rome 1.1 */
4027 { 0x00000200, 28, 4, 16 }, /* Rome 2.0 */
4028 { 0x00000201, 28, 4, 16 }, /* Rome 2.1 */
4029 { 0x00000300, 28, 4, 16 }, /* Rome 3.0 */
4030 { 0x00000302, 28, 4, 16 }, /* Rome 3.2 */
4031 { 0x00130100, 40, 4, 16 }, /* WCN6855 1.0 */
4032 { 0x00130200, 40, 4, 16 }, /* WCN6855 2.0 */
4033};
4034
4035static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
4036 void *data, u16 size)
4037{
4038 int pipe, err;
4039 u8 *buf;
4040
4041 buf = kmalloc(size, GFP_KERNEL);
4042 if (!buf)
4043 return -ENOMEM;
4044
4045 /* Found some of USB hosts have IOT issues with ours so that we should
4046 * not wait until HCI layer is ready.
4047 */
4048 pipe = usb_rcvctrlpipe(udev, 0);
4049 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
4050 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
4051 if (err < 0) {
4052 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
4053 goto done;
4054 }
4055
4056 memcpy(data, buf, size);
4057
4058done:
4059 kfree(buf);
4060
4061 return err;
4062}
4063
4064static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
4065 const struct firmware *firmware,
4066 size_t hdr_size)
4067{
4068 struct btusb_data *btdata = hci_get_drvdata(hdev);
4069 struct usb_device *udev = btdata->udev;
4070 size_t count, size, sent = 0;
4071 int pipe, len, err;
4072 u8 *buf;
4073
4074 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
4075 if (!buf)
4076 return -ENOMEM;
4077
4078 count = firmware->size;
4079
4080 size = min_t(size_t, count, hdr_size);
4081 memcpy(buf, firmware->data, size);
4082
4083 /* USB patches should go down to controller through USB path
4084 * because binary format fits to go down through USB channel.
4085 * USB control path is for patching headers and USB bulk is for
4086 * patch body.
4087 */
4088 pipe = usb_sndctrlpipe(udev, 0);
4089 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
4090 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
4091 if (err < 0) {
4092 bt_dev_err(hdev, "Failed to send headers (%d)", err);
4093 goto done;
4094 }
4095
4096 sent += size;
4097 count -= size;
4098
4099 /* ep2 need time to switch from function acl to function dfu,
4100 * so we add 20ms delay here.
4101 */
4102 msleep(20);
4103
4104 while (count) {
4105 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
4106
4107 memcpy(buf, firmware->data + sent, size);
4108
4109 pipe = usb_sndbulkpipe(udev, 0x02);
4110 err = usb_bulk_msg(udev, pipe, buf, size, &len,
4111 QCA_DFU_TIMEOUT);
4112 if (err < 0) {
4113 bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
4114 sent, firmware->size, err);
4115 break;
4116 }
4117
4118 if (size != len) {
4119 bt_dev_err(hdev, "Failed to get bulk buffer");
4120 err = -EILSEQ;
4121 break;
4122 }
4123
4124 sent += size;
4125 count -= size;
4126 }
4127
4128done:
4129 kfree(buf);
4130 return err;
4131}
4132
4133static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
4134 struct qca_version *ver,
4135 const struct qca_device_info *info)
4136{
4137 struct qca_rampatch_version *rver;
4138 const struct firmware *fw;
4139 u32 ver_rom, ver_patch, rver_rom;
4140 u16 rver_rom_low, rver_rom_high, rver_patch;
4141 char fwname[64];
4142 int err;
4143
4144 ver_rom = le32_to_cpu(ver->rom_version);
4145 ver_patch = le32_to_cpu(ver->patch_version);
4146
4147 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
4148
4149 err = request_firmware(&fw, fwname, &hdev->dev);
4150 if (err) {
4151 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
4152 fwname, err);
4153 return err;
4154 }
4155
4156 bt_dev_info(hdev, "using rampatch file: %s", fwname);
4157
4158 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
4159 rver_rom_low = le16_to_cpu(rver->rom_version_low);
4160 rver_patch = le16_to_cpu(rver->patch_version);
4161
4162 if (ver_rom & ~0xffffU) {
4163 rver_rom_high = le16_to_cpu(rver->rom_version_high);
4164 rver_rom = le32_to_cpu(rver_rom_high << 16 | rver_rom_low);
4165 } else {
4166 rver_rom = rver_rom_low;
4167 }
4168
4169 bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
4170 "firmware rome 0x%x build 0x%x",
4171 rver_rom, rver_patch, ver_rom, ver_patch);
4172
4173 if (rver_rom != ver_rom || rver_patch <= ver_patch) {
4174 bt_dev_err(hdev, "rampatch file version did not match with firmware");
4175 err = -EINVAL;
4176 goto done;
4177 }
4178
4179 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
4180
4181done:
4182 release_firmware(fw);
4183
4184 return err;
4185}
4186
4187static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
4188 struct qca_version *ver,
4189 const struct qca_device_info *info)
4190{
4191 const struct firmware *fw;
4192 char fwname[64];
4193 int err;
4194
4195 if (((ver->flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) {
4196 /* if boardid equal 0, use default nvm without surfix */
4197 if (le16_to_cpu(ver->board_id) == 0x0) {
4198 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
4199 le32_to_cpu(ver->rom_version));
4200 } else {
4201 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x_%04x.bin",
4202 le32_to_cpu(ver->rom_version),
4203 le16_to_cpu(ver->board_id));
4204 }
4205 } else {
4206 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
4207 le32_to_cpu(ver->rom_version));
4208 }
4209
4210 err = request_firmware(&fw, fwname, &hdev->dev);
4211 if (err) {
4212 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
4213 fwname, err);
4214 return err;
4215 }
4216
4217 bt_dev_info(hdev, "using NVM file: %s", fwname);
4218
4219 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
4220
4221 release_firmware(fw);
4222
4223 return err;
4224}
4225
4226/* identify the ROM version and check whether patches are needed */
4227static bool btusb_qca_need_patch(struct usb_device *udev)
4228{
4229 struct qca_version ver;
4230
4231 if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
4232 sizeof(ver)) < 0)
4233 return false;
4234 /* only low ROM versions need patches */
4235 return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
4236}
4237
4238static int btusb_setup_qca(struct hci_dev *hdev)
4239{
4240 struct btusb_data *btdata = hci_get_drvdata(hdev);
4241 struct usb_device *udev = btdata->udev;
4242 const struct qca_device_info *info = NULL;
4243 struct qca_version ver;
4244 u32 ver_rom;
4245 u8 status;
4246 int i, err;
4247
4248 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
4249 sizeof(ver));
4250 if (err < 0)
4251 return err;
4252
4253 ver_rom = le32_to_cpu(ver.rom_version);
4254
4255 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
4256 if (ver_rom == qca_devices_table[i].rom_version)
4257 info = &qca_devices_table[i];
4258 }
4259 if (!info) {
4260 /* If the rom_version is not matched in the qca_devices_table
4261 * and the high ROM version is not zero, we assume this chip no
4262 * need to load the rampatch and nvm.
4263 */
4264 if (ver_rom & ~0xffffU)
4265 return 0;
4266
4267 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
4268 return -ENODEV;
4269 }
4270
4271 err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
4272 sizeof(status));
4273 if (err < 0)
4274 return err;
4275
4276 if (!(status & QCA_PATCH_UPDATED)) {
4277 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
4278 if (err < 0)
4279 return err;
4280 }
4281
4282 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
4283 sizeof(ver));
4284 if (err < 0)
4285 return err;
4286
4287 if (!(status & QCA_SYSCFG_UPDATED)) {
4288 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
4289 if (err < 0)
4290 return err;
4291 }
4292
4293 return 0;
4294}
4295
4296static inline int __set_diag_interface(struct hci_dev *hdev)
4297{
4298 struct btusb_data *data = hci_get_drvdata(hdev);
4299 struct usb_interface *intf = data->diag;
4300 int i;
4301
4302 if (!data->diag)
4303 return -ENODEV;
4304
4305 data->diag_tx_ep = NULL;
4306 data->diag_rx_ep = NULL;
4307
4308 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
4309 struct usb_endpoint_descriptor *ep_desc;
4310
4311 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
4312
4313 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
4314 data->diag_tx_ep = ep_desc;
4315 continue;
4316 }
4317
4318 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
4319 data->diag_rx_ep = ep_desc;
4320 continue;
4321 }
4322 }
4323
4324 if (!data->diag_tx_ep || !data->diag_rx_ep) {
4325 bt_dev_err(hdev, "invalid diagnostic descriptors");
4326 return -ENODEV;
4327 }
4328
4329 return 0;
4330}
4331
4332static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
4333{
4334 struct btusb_data *data = hci_get_drvdata(hdev);
4335 struct sk_buff *skb;
4336 struct urb *urb;
4337 unsigned int pipe;
4338
4339 if (!data->diag_tx_ep)
4340 return ERR_PTR(-ENODEV);
4341
4342 urb = usb_alloc_urb(0, GFP_KERNEL);
4343 if (!urb)
4344 return ERR_PTR(-ENOMEM);
4345
4346 skb = bt_skb_alloc(2, GFP_KERNEL);
4347 if (!skb) {
4348 usb_free_urb(urb);
4349 return ERR_PTR(-ENOMEM);
4350 }
4351
4352 skb_put_u8(skb, 0xf0);
4353 skb_put_u8(skb, enable);
4354
4355 pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
4356
4357 usb_fill_bulk_urb(urb, data->udev, pipe,
4358 skb->data, skb->len, btusb_tx_complete, skb);
4359
4360 skb->dev = (void *)hdev;
4361
4362 return urb;
4363}
4364
4365static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
4366{
4367 struct btusb_data *data = hci_get_drvdata(hdev);
4368 struct urb *urb;
4369
4370 if (!data->diag)
4371 return -ENODEV;
4372
4373 if (!test_bit(HCI_RUNNING, &hdev->flags))
4374 return -ENETDOWN;
4375
4376 urb = alloc_diag_urb(hdev, enable);
4377 if (IS_ERR(urb))
4378 return PTR_ERR(urb);
4379
4380 return submit_or_queue_tx_urb(hdev, urb);
4381}
4382
4383#ifdef CONFIG_PM
4384static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
4385{
4386 struct btusb_data *data = priv;
4387
4388 pm_wakeup_event(&data->udev->dev, 0);
4389 pm_system_wakeup();
4390
4391 /* Disable only if not already disabled (keep it balanced) */
4392 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4393 disable_irq_nosync(irq);
4394 disable_irq_wake(irq);
4395 }
4396 return IRQ_HANDLED;
4397}
4398
4399static const struct of_device_id btusb_match_table[] = {
4400 { .compatible = "usb1286,204e" },
4401 { .compatible = "usbcf3,e300" }, /* QCA6174A */
4402 { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
4403 { }
4404};
4405MODULE_DEVICE_TABLE(of, btusb_match_table);
4406
4407/* Use an oob wakeup pin? */
4408static int btusb_config_oob_wake(struct hci_dev *hdev)
4409{
4410 struct btusb_data *data = hci_get_drvdata(hdev);
4411 struct device *dev = &data->udev->dev;
4412 int irq, ret;
4413
4414 clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4415
4416 if (!of_match_device(btusb_match_table, dev))
4417 return 0;
4418
4419 /* Move on if no IRQ specified */
4420 irq = of_irq_get_byname(dev->of_node, "wakeup");
4421 if (irq <= 0) {
4422 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
4423 return 0;
4424 }
4425
4426 irq_set_status_flags(irq, IRQ_NOAUTOEN);
4427 ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
4428 0, "OOB Wake-on-BT", data);
4429 if (ret) {
4430 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
4431 return ret;
4432 }
4433
4434 ret = device_init_wakeup(dev, true);
4435 if (ret) {
4436 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
4437 return ret;
4438 }
4439
4440 data->oob_wake_irq = irq;
4441 bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
4442 return 0;
4443}
4444#endif
4445
4446static void btusb_check_needs_reset_resume(struct usb_interface *intf)
4447{
4448 if (dmi_check_system(btusb_needs_reset_resume_table))
4449 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
4450}
4451
4452static bool btusb_prevent_wake(struct hci_dev *hdev)
4453{
4454 struct btusb_data *data = hci_get_drvdata(hdev);
4455
4456 if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
4457 return true;
4458
4459 return !device_may_wakeup(&data->udev->dev);
4460}
4461
4462static int btusb_shutdown_qca(struct hci_dev *hdev)
4463{
4464 struct sk_buff *skb;
4465
4466 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
4467 if (IS_ERR(skb)) {
4468 bt_dev_err(hdev, "HCI reset during shutdown failed");
4469 return PTR_ERR(skb);
4470 }
4471 kfree_skb(skb);
4472
4473 return 0;
4474}
4475
4476static int btusb_probe(struct usb_interface *intf,
4477 const struct usb_device_id *id)
4478{
4479 struct usb_endpoint_descriptor *ep_desc;
4480 struct gpio_desc *reset_gpio;
4481 struct btusb_data *data;
4482 struct hci_dev *hdev;
4483 unsigned ifnum_base;
4484 int i, err;
4485
4486 BT_DBG("intf %p id %p", intf, id);
4487
4488 /* interface numbers are hardcoded in the spec */
4489 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
4490 if (!(id->driver_info & BTUSB_IFNUM_2))
4491 return -ENODEV;
4492 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
4493 return -ENODEV;
4494 }
4495
4496 ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
4497
4498 if (!id->driver_info) {
4499 const struct usb_device_id *match;
4500
4501 match = usb_match_id(intf, blacklist_table);
4502 if (match)
4503 id = match;
4504 }
4505
4506 if (id->driver_info == BTUSB_IGNORE)
4507 return -ENODEV;
4508
4509 if (id->driver_info & BTUSB_ATH3012) {
4510 struct usb_device *udev = interface_to_usbdev(intf);
4511
4512 /* Old firmware would otherwise let ath3k driver load
4513 * patch and sysconfig files
4514 */
4515 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
4516 !btusb_qca_need_patch(udev))
4517 return -ENODEV;
4518 }
4519
4520 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
4521 if (!data)
4522 return -ENOMEM;
4523
4524 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
4525 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
4526
4527 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
4528 data->intr_ep = ep_desc;
4529 continue;
4530 }
4531
4532 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
4533 data->bulk_tx_ep = ep_desc;
4534 continue;
4535 }
4536
4537 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
4538 data->bulk_rx_ep = ep_desc;
4539 continue;
4540 }
4541 }
4542
4543 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
4544 return -ENODEV;
4545
4546 if (id->driver_info & BTUSB_AMP) {
4547 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
4548 data->cmdreq = 0x2b;
4549 } else {
4550 data->cmdreq_type = USB_TYPE_CLASS;
4551 data->cmdreq = 0x00;
4552 }
4553
4554 data->udev = interface_to_usbdev(intf);
4555 data->intf = intf;
4556
4557 INIT_WORK(&data->work, btusb_work);
4558 INIT_WORK(&data->waker, btusb_waker);
4559 init_usb_anchor(&data->deferred);
4560 init_usb_anchor(&data->tx_anchor);
4561 spin_lock_init(&data->txlock);
4562
4563 init_usb_anchor(&data->intr_anchor);
4564 init_usb_anchor(&data->bulk_anchor);
4565 init_usb_anchor(&data->isoc_anchor);
4566 init_usb_anchor(&data->diag_anchor);
4567 init_usb_anchor(&data->ctrl_anchor);
4568 spin_lock_init(&data->rxlock);
4569
4570 if (id->driver_info & BTUSB_INTEL_NEW) {
4571 data->recv_event = btusb_recv_event_intel;
4572 data->recv_bulk = btusb_recv_bulk_intel;
4573 set_bit(BTUSB_BOOTLOADER, &data->flags);
4574 } else {
4575 data->recv_event = hci_recv_frame;
4576 data->recv_bulk = btusb_recv_bulk;
4577 }
4578
4579 hdev = hci_alloc_dev();
4580 if (!hdev)
4581 return -ENOMEM;
4582
4583 hdev->bus = HCI_USB;
4584 hci_set_drvdata(hdev, data);
4585
4586 if (id->driver_info & BTUSB_AMP)
4587 hdev->dev_type = HCI_AMP;
4588 else
4589 hdev->dev_type = HCI_PRIMARY;
4590
4591 data->hdev = hdev;
4592
4593 SET_HCIDEV_DEV(hdev, &intf->dev);
4594
4595 reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
4596 GPIOD_OUT_LOW);
4597 if (IS_ERR(reset_gpio)) {
4598 err = PTR_ERR(reset_gpio);
4599 goto out_free_dev;
4600 } else if (reset_gpio) {
4601 data->reset_gpio = reset_gpio;
4602 }
4603
4604 hdev->open = btusb_open;
4605 hdev->close = btusb_close;
4606 hdev->flush = btusb_flush;
4607 hdev->send = btusb_send_frame;
4608 hdev->notify = btusb_notify;
4609 hdev->prevent_wake = btusb_prevent_wake;
4610
4611#ifdef CONFIG_PM
4612 err = btusb_config_oob_wake(hdev);
4613 if (err)
4614 goto out_free_dev;
4615
4616 /* Marvell devices may need a specific chip configuration */
4617 if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
4618 err = marvell_config_oob_wake(hdev);
4619 if (err)
4620 goto out_free_dev;
4621 }
4622#endif
4623 if (id->driver_info & BTUSB_CW6622)
4624 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
4625
4626 if (id->driver_info & BTUSB_BCM2045)
4627 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
4628
4629 if (id->driver_info & BTUSB_BCM92035)
4630 hdev->setup = btusb_setup_bcm92035;
4631
4632 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
4633 (id->driver_info & BTUSB_BCM_PATCHRAM)) {
4634 hdev->manufacturer = 15;
4635 hdev->setup = btbcm_setup_patchram;
4636 hdev->set_diag = btusb_bcm_set_diag;
4637 hdev->set_bdaddr = btbcm_set_bdaddr;
4638
4639 /* Broadcom LM_DIAG Interface numbers are hardcoded */
4640 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4641 }
4642
4643 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
4644 (id->driver_info & BTUSB_BCM_APPLE)) {
4645 hdev->manufacturer = 15;
4646 hdev->setup = btbcm_setup_apple;
4647 hdev->set_diag = btusb_bcm_set_diag;
4648
4649 /* Broadcom LM_DIAG Interface numbers are hardcoded */
4650 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4651 }
4652
4653 if (id->driver_info & BTUSB_INTEL) {
4654 hdev->manufacturer = 2;
4655 hdev->setup = btusb_setup_intel;
4656 hdev->shutdown = btusb_shutdown_intel;
4657 hdev->set_diag = btintel_set_diag_mfg;
4658 hdev->set_bdaddr = btintel_set_bdaddr;
4659 hdev->cmd_timeout = btusb_intel_cmd_timeout;
4660 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4661 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4662 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
4663 }
4664
4665 if (id->driver_info & BTUSB_INTEL_NEW) {
4666 hdev->manufacturer = 2;
4667 hdev->send = btusb_send_frame_intel;
4668 hdev->setup = btusb_setup_intel_new;
4669 hdev->shutdown = btusb_shutdown_intel_new;
4670 hdev->hw_error = btintel_hw_error;
4671 hdev->set_diag = btintel_set_diag;
4672 hdev->set_bdaddr = btintel_set_bdaddr;
4673 hdev->cmd_timeout = btusb_intel_cmd_timeout;
4674 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4675 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4676 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
4677 }
4678
4679 if (id->driver_info & BTUSB_INTEL_NEWGEN) {
4680 hdev->manufacturer = 2;
4681 hdev->send = btusb_send_frame_intel;
4682 hdev->setup = btusb_setup_intel_newgen;
4683 hdev->shutdown = btusb_shutdown_intel_new;
4684 hdev->hw_error = btintel_hw_error;
4685 hdev->set_diag = btintel_set_diag;
4686 hdev->set_bdaddr = btintel_set_bdaddr;
4687 hdev->cmd_timeout = btusb_intel_cmd_timeout;
4688 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4689 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4690 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
4691
4692 data->recv_event = btusb_recv_event_intel;
4693 data->recv_bulk = btusb_recv_bulk_intel;
4694 set_bit(BTUSB_BOOTLOADER, &data->flags);
4695 }
4696
4697 if (id->driver_info & BTUSB_MARVELL)
4698 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
4699
4700 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) &&
4701 (id->driver_info & BTUSB_MEDIATEK)) {
4702 hdev->setup = btusb_mtk_setup;
4703 hdev->shutdown = btusb_mtk_shutdown;
4704 hdev->manufacturer = 70;
4705 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
4706 }
4707
4708 if (id->driver_info & BTUSB_SWAVE) {
4709 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
4710 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
4711 }
4712
4713 if (id->driver_info & BTUSB_INTEL_BOOT) {
4714 hdev->manufacturer = 2;
4715 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4716 }
4717
4718 if (id->driver_info & BTUSB_ATH3012) {
4719 data->setup_on_usb = btusb_setup_qca;
4720 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4721 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4722 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4723 }
4724
4725 if (id->driver_info & BTUSB_QCA_ROME) {
4726 data->setup_on_usb = btusb_setup_qca;
4727 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4728 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4729 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4730 btusb_check_needs_reset_resume(intf);
4731 }
4732
4733 if (id->driver_info & BTUSB_QCA_WCN6855) {
4734 data->setup_on_usb = btusb_setup_qca;
4735 hdev->shutdown = btusb_shutdown_qca;
4736 hdev->set_bdaddr = btusb_set_bdaddr_wcn6855;
4737 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4738 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4739 }
4740
4741 if (id->driver_info & BTUSB_AMP) {
4742 /* AMP controllers do not support SCO packets */
4743 data->isoc = NULL;
4744 } else {
4745 /* Interface orders are hardcoded in the specification */
4746 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
4747 data->isoc_ifnum = ifnum_base + 1;
4748 }
4749
4750 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) &&
4751 (id->driver_info & BTUSB_REALTEK)) {
4752 hdev->setup = btrtl_setup_realtek;
4753 hdev->shutdown = btrtl_shutdown_realtek;
4754 hdev->cmd_timeout = btusb_rtl_cmd_timeout;
4755
4756 /* Realtek devices lose their updated firmware over global
4757 * suspend that means host doesn't send SET_FEATURE
4758 * (DEVICE_REMOTE_WAKEUP)
4759 */
4760 set_bit(BTUSB_WAKEUP_DISABLE, &data->flags);
4761 set_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags);
4762 }
4763
4764 if (!reset)
4765 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4766
4767 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
4768 if (!disable_scofix)
4769 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
4770 }
4771
4772 if (id->driver_info & BTUSB_BROKEN_ISOC)
4773 data->isoc = NULL;
4774
4775 if (id->driver_info & BTUSB_WIDEBAND_SPEECH)
4776 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
4777
4778 if (id->driver_info & BTUSB_VALID_LE_STATES)
4779 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
4780
4781 if (id->driver_info & BTUSB_DIGIANSWER) {
4782 data->cmdreq_type = USB_TYPE_VENDOR;
4783 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4784 }
4785
4786 if (id->driver_info & BTUSB_CSR) {
4787 struct usb_device *udev = data->udev;
4788 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
4789
4790 /* Old firmware would otherwise execute USB reset */
4791 if (bcdDevice < 0x117)
4792 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4793
4794 /* This must be set first in case we disable it for fakes */
4795 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4796
4797 /* Fake CSR devices with broken commands */
4798 if (le16_to_cpu(udev->descriptor.idVendor) == 0x0a12 &&
4799 le16_to_cpu(udev->descriptor.idProduct) == 0x0001)
4800 hdev->setup = btusb_setup_csr;
4801 }
4802
4803 if (id->driver_info & BTUSB_SNIFFER) {
4804 struct usb_device *udev = data->udev;
4805
4806 /* New sniffer firmware has crippled HCI interface */
4807 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
4808 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4809 }
4810
4811 if (id->driver_info & BTUSB_INTEL_BOOT) {
4812 /* A bug in the bootloader causes that interrupt interface is
4813 * only enabled after receiving SetInterface(0, AltSetting=0).
4814 */
4815 err = usb_set_interface(data->udev, 0, 0);
4816 if (err < 0) {
4817 BT_ERR("failed to set interface 0, alt 0 %d", err);
4818 goto out_free_dev;
4819 }
4820 }
4821
4822 if (data->isoc) {
4823 err = usb_driver_claim_interface(&btusb_driver,
4824 data->isoc, data);
4825 if (err < 0)
4826 goto out_free_dev;
4827 }
4828
4829 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) {
4830 if (!usb_driver_claim_interface(&btusb_driver,
4831 data->diag, data))
4832 __set_diag_interface(hdev);
4833 else
4834 data->diag = NULL;
4835 }
4836
4837 if (enable_autosuspend)
4838 usb_enable_autosuspend(data->udev);
4839
4840 err = hci_register_dev(hdev);
4841 if (err < 0)
4842 goto out_free_dev;
4843
4844 usb_set_intfdata(intf, data);
4845
4846 return 0;
4847
4848out_free_dev:
4849 if (data->reset_gpio)
4850 gpiod_put(data->reset_gpio);
4851 hci_free_dev(hdev);
4852 return err;
4853}
4854
4855static void btusb_disconnect(struct usb_interface *intf)
4856{
4857 struct btusb_data *data = usb_get_intfdata(intf);
4858 struct hci_dev *hdev;
4859
4860 BT_DBG("intf %p", intf);
4861
4862 if (!data)
4863 return;
4864
4865 hdev = data->hdev;
4866 usb_set_intfdata(data->intf, NULL);
4867
4868 if (data->isoc)
4869 usb_set_intfdata(data->isoc, NULL);
4870
4871 if (data->diag)
4872 usb_set_intfdata(data->diag, NULL);
4873
4874 hci_unregister_dev(hdev);
4875
4876 if (intf == data->intf) {
4877 if (data->isoc)
4878 usb_driver_release_interface(&btusb_driver, data->isoc);
4879 if (data->diag)
4880 usb_driver_release_interface(&btusb_driver, data->diag);
4881 } else if (intf == data->isoc) {
4882 if (data->diag)
4883 usb_driver_release_interface(&btusb_driver, data->diag);
4884 usb_driver_release_interface(&btusb_driver, data->intf);
4885 } else if (intf == data->diag) {
4886 usb_driver_release_interface(&btusb_driver, data->intf);
4887 if (data->isoc)
4888 usb_driver_release_interface(&btusb_driver, data->isoc);
4889 }
4890
4891 if (data->oob_wake_irq)
4892 device_init_wakeup(&data->udev->dev, false);
4893
4894 if (data->reset_gpio)
4895 gpiod_put(data->reset_gpio);
4896
4897 hci_free_dev(hdev);
4898}
4899
4900#ifdef CONFIG_PM
4901static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
4902{
4903 struct btusb_data *data = usb_get_intfdata(intf);
4904
4905 BT_DBG("intf %p", intf);
4906
4907 if (data->suspend_count++)
4908 return 0;
4909
4910 spin_lock_irq(&data->txlock);
4911 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
4912 set_bit(BTUSB_SUSPENDING, &data->flags);
4913 spin_unlock_irq(&data->txlock);
4914 } else {
4915 spin_unlock_irq(&data->txlock);
4916 data->suspend_count--;
4917 return -EBUSY;
4918 }
4919
4920 cancel_work_sync(&data->work);
4921
4922 btusb_stop_traffic(data);
4923 usb_kill_anchored_urbs(&data->tx_anchor);
4924
4925 if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
4926 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4927 enable_irq_wake(data->oob_wake_irq);
4928 enable_irq(data->oob_wake_irq);
4929 }
4930
4931 /* For global suspend, Realtek devices lose the loaded fw
4932 * in them. But for autosuspend, firmware should remain.
4933 * Actually, it depends on whether the usb host sends
4934 * set feature (enable wakeup) or not.
4935 */
4936 if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags)) {
4937 if (PMSG_IS_AUTO(message) &&
4938 device_can_wakeup(&data->udev->dev))
4939 data->udev->do_remote_wakeup = 1;
4940 else if (!PMSG_IS_AUTO(message))
4941 data->udev->reset_resume = 1;
4942 }
4943
4944 return 0;
4945}
4946
4947static void play_deferred(struct btusb_data *data)
4948{
4949 struct urb *urb;
4950 int err;
4951
4952 while ((urb = usb_get_from_anchor(&data->deferred))) {
4953 usb_anchor_urb(urb, &data->tx_anchor);
4954
4955 err = usb_submit_urb(urb, GFP_ATOMIC);
4956 if (err < 0) {
4957 if (err != -EPERM && err != -ENODEV)
4958 BT_ERR("%s urb %p submission failed (%d)",
4959 data->hdev->name, urb, -err);
4960 kfree(urb->setup_packet);
4961 usb_unanchor_urb(urb);
4962 usb_free_urb(urb);
4963 break;
4964 }
4965
4966 data->tx_in_flight++;
4967 usb_free_urb(urb);
4968 }
4969
4970 /* Cleanup the rest deferred urbs. */
4971 while ((urb = usb_get_from_anchor(&data->deferred))) {
4972 kfree(urb->setup_packet);
4973 usb_free_urb(urb);
4974 }
4975}
4976
4977static int btusb_resume(struct usb_interface *intf)
4978{
4979 struct btusb_data *data = usb_get_intfdata(intf);
4980 struct hci_dev *hdev = data->hdev;
4981 int err = 0;
4982
4983 BT_DBG("intf %p", intf);
4984
4985 if (--data->suspend_count)
4986 return 0;
4987
4988 /* Disable only if not already disabled (keep it balanced) */
4989 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4990 disable_irq(data->oob_wake_irq);
4991 disable_irq_wake(data->oob_wake_irq);
4992 }
4993
4994 if (!test_bit(HCI_RUNNING, &hdev->flags))
4995 goto done;
4996
4997 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4998 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4999 if (err < 0) {
5000 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
5001 goto failed;
5002 }
5003 }
5004
5005 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
5006 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
5007 if (err < 0) {
5008 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
5009 goto failed;
5010 }
5011
5012 btusb_submit_bulk_urb(hdev, GFP_NOIO);
5013 }
5014
5015 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
5016 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
5017 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
5018 else
5019 btusb_submit_isoc_urb(hdev, GFP_NOIO);
5020 }
5021
5022 spin_lock_irq(&data->txlock);
5023 play_deferred(data);
5024 clear_bit(BTUSB_SUSPENDING, &data->flags);
5025 spin_unlock_irq(&data->txlock);
5026 schedule_work(&data->work);
5027
5028 return 0;
5029
5030failed:
5031 usb_scuttle_anchored_urbs(&data->deferred);
5032done:
5033 spin_lock_irq(&data->txlock);
5034 clear_bit(BTUSB_SUSPENDING, &data->flags);
5035 spin_unlock_irq(&data->txlock);
5036
5037 return err;
5038}
5039#endif
5040
5041static struct usb_driver btusb_driver = {
5042 .name = "btusb",
5043 .probe = btusb_probe,
5044 .disconnect = btusb_disconnect,
5045#ifdef CONFIG_PM
5046 .suspend = btusb_suspend,
5047 .resume = btusb_resume,
5048#endif
5049 .id_table = btusb_table,
5050 .supports_autosuspend = 1,
5051 .disable_hub_initiated_lpm = 1,
5052};
5053
5054module_usb_driver(btusb_driver);
5055
5056module_param(disable_scofix, bool, 0644);
5057MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
5058
5059module_param(force_scofix, bool, 0644);
5060MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
5061
5062module_param(enable_autosuspend, bool, 0644);
5063MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
5064
5065module_param(reset, bool, 0644);
5066MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
5067
5068MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
5069MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
5070MODULE_VERSION(VERSION);
5071MODULE_LICENSE("GPL");