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
32 static bool disable_scofix;
33 static bool force_scofix;
34 static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND);
35 static bool reset = true;
36
37 static struct usb_driver btusb_driver;
38
39 #define BTUSB_IGNORE BIT(0)
40 #define BTUSB_DIGIANSWER BIT(1)
41 #define BTUSB_CSR BIT(2)
42 #define BTUSB_SNIFFER BIT(3)
43 #define BTUSB_BCM92035 BIT(4)
44 #define BTUSB_BROKEN_ISOC BIT(5)
45 #define BTUSB_WRONG_SCO_MTU BIT(6)
46 #define BTUSB_ATH3012 BIT(7)
47 #define BTUSB_INTEL_COMBINED BIT(8)
48 #define BTUSB_INTEL_BOOT BIT(9)
49 #define BTUSB_BCM_PATCHRAM BIT(10)
50 #define BTUSB_MARVELL BIT(11)
51 #define BTUSB_SWAVE BIT(12)
52 #define BTUSB_AMP BIT(13)
53 #define BTUSB_QCA_ROME BIT(14)
54 #define BTUSB_BCM_APPLE BIT(15)
55 #define BTUSB_REALTEK BIT(16)
56 #define BTUSB_BCM2045 BIT(17)
57 #define BTUSB_IFNUM_2 BIT(18)
58 #define BTUSB_CW6622 BIT(19)
59 #define BTUSB_MEDIATEK BIT(20)
60 #define BTUSB_WIDEBAND_SPEECH BIT(21)
61 #define BTUSB_VALID_LE_STATES BIT(22)
62 #define BTUSB_QCA_WCN6855 BIT(23)
63 #define BTUSB_INTEL_BROKEN_SHUTDOWN_LED BIT(24)
64 #define BTUSB_INTEL_BROKEN_INITIAL_NCMD BIT(25)
65 #define BTUSB_INTEL_NO_WBS_SUPPORT BIT(26)
66 #define BTUSB_ACTIONS_SEMI BIT(27)
67
68 static 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
175 MODULE_DEVICE_TABLE(usb, btusb_table);
176
177 static const struct usb_device_id blacklist_table[] = {
178 /* CSR BlueCore devices */
179 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
180
181 /* Broadcom BCM2033 without firmware */
182 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
183
184 /* Broadcom BCM2045 devices */
185 { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
186
187 /* Atheros 3011 with sflash firmware */
188 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
189 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
190 { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
191 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
192 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
193 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
194 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
195
196 /* Atheros AR9285 Malbec with sflash firmware */
197 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
198
199 /* Atheros 3012 with sflash firmware */
200 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
201 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
202 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
203 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
204 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
205 { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
206 { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
207 { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
208 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
209 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
210 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
211 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
212 { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
213 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
214 { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
215 { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
216 { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
217 { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
218 { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
219 { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
220 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
221 { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
222 { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
223 { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
224 { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
225 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
226 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
227 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
228 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
229 { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
230 { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
231 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
232 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
233 { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
234 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
235 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
236 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
237 { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
238 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
239 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
240 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
241 { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
242 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
243 { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
244 { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
245 { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
246 { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
247 { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
248 { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
249 { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
250
251 /* Atheros AR5BBU12 with sflash firmware */
252 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
253
254 /* Atheros AR5BBU12 with sflash firmware */
255 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
256 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
257
258 /* QCA ROME chipset */
259 { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME |
260 BTUSB_WIDEBAND_SPEECH },
261 { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME |
262 BTUSB_WIDEBAND_SPEECH },
263 { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME |
264 BTUSB_WIDEBAND_SPEECH },
265 { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME |
266 BTUSB_WIDEBAND_SPEECH },
267 { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME |
268 BTUSB_WIDEBAND_SPEECH },
269 { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME |
270 BTUSB_WIDEBAND_SPEECH },
271 { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME |
272 BTUSB_WIDEBAND_SPEECH },
273 { USB_DEVICE(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 8821CE Bluetooth devices */
496 { USB_DEVICE(0x13d3, 0x3529), .driver_info = BTUSB_REALTEK |
497 BTUSB_WIDEBAND_SPEECH },
498
499 /* Realtek 8822CE Bluetooth devices */
500 { USB_DEVICE(0x0bda, 0xb00c), .driver_info = BTUSB_REALTEK |
501 BTUSB_WIDEBAND_SPEECH },
502 { USB_DEVICE(0x0bda, 0xc822), .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 { USB_DEVICE(0x0bda, 0x887b), .driver_info = BTUSB_REALTEK |
539 BTUSB_WIDEBAND_SPEECH },
540 { USB_DEVICE(0x0bda, 0xb85b), .driver_info = BTUSB_REALTEK |
541 BTUSB_WIDEBAND_SPEECH },
542 { USB_DEVICE(0x13d3, 0x3570), .driver_info = BTUSB_REALTEK |
543 BTUSB_WIDEBAND_SPEECH },
544 { USB_DEVICE(0x13d3, 0x3571), .driver_info = BTUSB_REALTEK |
545 BTUSB_WIDEBAND_SPEECH },
546
547 /* Realtek Bluetooth devices */
548 { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
549 .driver_info = BTUSB_REALTEK },
550
551 /* MediaTek Bluetooth devices */
552 { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01),
553 .driver_info = BTUSB_MEDIATEK |
554 BTUSB_WIDEBAND_SPEECH |
555 BTUSB_VALID_LE_STATES },
556
557 /* Additional MediaTek MT7615E Bluetooth devices */
558 { USB_DEVICE(0x13d3, 0x3560), .driver_info = BTUSB_MEDIATEK},
559
560 /* Additional MediaTek MT7663 Bluetooth devices */
561 { USB_DEVICE(0x043e, 0x310c), .driver_info = BTUSB_MEDIATEK |
562 BTUSB_WIDEBAND_SPEECH |
563 BTUSB_VALID_LE_STATES },
564 { USB_DEVICE(0x04ca, 0x3801), .driver_info = BTUSB_MEDIATEK |
565 BTUSB_WIDEBAND_SPEECH |
566 BTUSB_VALID_LE_STATES },
567
568 /* Additional MediaTek MT7668 Bluetooth devices */
569 { USB_DEVICE(0x043e, 0x3109), .driver_info = BTUSB_MEDIATEK |
570 BTUSB_WIDEBAND_SPEECH |
571 BTUSB_VALID_LE_STATES },
572
573 /* Additional MediaTek MT7921 Bluetooth devices */
574 { USB_DEVICE(0x0489, 0xe0c8), .driver_info = BTUSB_MEDIATEK |
575 BTUSB_WIDEBAND_SPEECH |
576 BTUSB_VALID_LE_STATES },
577 { USB_DEVICE(0x0489, 0xe0e0), .driver_info = BTUSB_MEDIATEK |
578 BTUSB_WIDEBAND_SPEECH |
579 BTUSB_VALID_LE_STATES },
580 { USB_DEVICE(0x0489, 0xe0f2), .driver_info = BTUSB_MEDIATEK |
581 BTUSB_WIDEBAND_SPEECH |
582 BTUSB_VALID_LE_STATES },
583 { USB_DEVICE(0x04ca, 0x3802), .driver_info = BTUSB_MEDIATEK |
584 BTUSB_WIDEBAND_SPEECH |
585 BTUSB_VALID_LE_STATES },
586 { USB_DEVICE(0x13d3, 0x3563), .driver_info = BTUSB_MEDIATEK |
587 BTUSB_WIDEBAND_SPEECH |
588 BTUSB_VALID_LE_STATES },
589 { USB_DEVICE(0x13d3, 0x3564), .driver_info = BTUSB_MEDIATEK |
590 BTUSB_WIDEBAND_SPEECH |
591 BTUSB_VALID_LE_STATES },
592 { USB_DEVICE(0x13d3, 0x3567), .driver_info = BTUSB_MEDIATEK |
593 BTUSB_WIDEBAND_SPEECH |
594 BTUSB_VALID_LE_STATES },
595 { USB_DEVICE(0x13d3, 0x3578), .driver_info = BTUSB_MEDIATEK |
596 BTUSB_WIDEBAND_SPEECH |
597 BTUSB_VALID_LE_STATES },
598 { USB_DEVICE(0x13d3, 0x3583), .driver_info = BTUSB_MEDIATEK |
599 BTUSB_WIDEBAND_SPEECH |
600 BTUSB_VALID_LE_STATES },
601 { USB_DEVICE(0x0489, 0xe0cd), .driver_info = BTUSB_MEDIATEK |
602 BTUSB_WIDEBAND_SPEECH |
603 BTUSB_VALID_LE_STATES },
604 { USB_DEVICE(0x0e8d, 0x0608), .driver_info = BTUSB_MEDIATEK |
605 BTUSB_WIDEBAND_SPEECH |
606 BTUSB_VALID_LE_STATES },
607
608 /* MediaTek MT7922A Bluetooth devices */
609 { USB_DEVICE(0x0489, 0xe0d8), .driver_info = BTUSB_MEDIATEK |
610 BTUSB_WIDEBAND_SPEECH |
611 BTUSB_VALID_LE_STATES },
612 { USB_DEVICE(0x0489, 0xe0d9), .driver_info = BTUSB_MEDIATEK |
613 BTUSB_WIDEBAND_SPEECH |
614 BTUSB_VALID_LE_STATES },
615 { USB_DEVICE(0x0489, 0xe0f5), .driver_info = BTUSB_MEDIATEK |
616 BTUSB_WIDEBAND_SPEECH |
617 BTUSB_VALID_LE_STATES },
618 { USB_DEVICE(0x13d3, 0x3568), .driver_info = BTUSB_MEDIATEK |
619 BTUSB_WIDEBAND_SPEECH |
620 BTUSB_VALID_LE_STATES },
621 { USB_DEVICE(0x0489, 0xe0e2), .driver_info = BTUSB_MEDIATEK |
622 BTUSB_WIDEBAND_SPEECH |
623 BTUSB_VALID_LE_STATES },
624
625 /* Additional Realtek 8723AE Bluetooth devices */
626 { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
627 { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
628
629 /* Additional Realtek 8723BE Bluetooth devices */
630 { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
631 { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
632 { USB_DEVICE(0x04f2, 0xb49f), .driver_info = BTUSB_REALTEK },
633 { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
634 { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
635 { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
636 { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
637
638 /* Additional Realtek 8723BU Bluetooth devices */
639 { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
640
641 /* Additional Realtek 8723DE Bluetooth devices */
642 { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
643 { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
644
645 /* Additional Realtek 8761BUV Bluetooth devices */
646 { USB_DEVICE(0x2357, 0x0604), .driver_info = BTUSB_REALTEK |
647 BTUSB_WIDEBAND_SPEECH },
648 { USB_DEVICE(0x0b05, 0x190e), .driver_info = BTUSB_REALTEK |
649 BTUSB_WIDEBAND_SPEECH },
650 { USB_DEVICE(0x2550, 0x8761), .driver_info = BTUSB_REALTEK |
651 BTUSB_WIDEBAND_SPEECH },
652 { USB_DEVICE(0x0bda, 0x8771), .driver_info = BTUSB_REALTEK |
653 BTUSB_WIDEBAND_SPEECH },
654 { USB_DEVICE(0x7392, 0xc611), .driver_info = BTUSB_REALTEK |
655 BTUSB_WIDEBAND_SPEECH },
656
657 /* Additional Realtek 8821AE Bluetooth devices */
658 { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
659 { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
660 { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
661 { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
662 { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
663
664 /* Additional Realtek 8822BE Bluetooth devices */
665 { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
666 { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
667
668 /* Additional Realtek 8822CE Bluetooth devices */
669 { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK |
670 BTUSB_WIDEBAND_SPEECH },
671 { USB_DEVICE(0x04c5, 0x161f), .driver_info = BTUSB_REALTEK |
672 BTUSB_WIDEBAND_SPEECH },
673 { USB_DEVICE(0x0b05, 0x18ef), .driver_info = BTUSB_REALTEK |
674 BTUSB_WIDEBAND_SPEECH },
675 { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK |
676 BTUSB_WIDEBAND_SPEECH },
677 { USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK |
678 BTUSB_WIDEBAND_SPEECH },
679 { USB_DEVICE(0x13d3, 0x3553), .driver_info = BTUSB_REALTEK |
680 BTUSB_WIDEBAND_SPEECH },
681 { USB_DEVICE(0x13d3, 0x3555), .driver_info = BTUSB_REALTEK |
682 BTUSB_WIDEBAND_SPEECH },
683 { USB_DEVICE(0x2ff8, 0x3051), .driver_info = BTUSB_REALTEK |
684 BTUSB_WIDEBAND_SPEECH },
685 { USB_DEVICE(0x1358, 0xc123), .driver_info = BTUSB_REALTEK |
686 BTUSB_WIDEBAND_SPEECH },
687 { USB_DEVICE(0x0bda, 0xc123), .driver_info = BTUSB_REALTEK |
688 BTUSB_WIDEBAND_SPEECH },
689 { USB_DEVICE(0x0cb5, 0xc547), .driver_info = BTUSB_REALTEK |
690 BTUSB_WIDEBAND_SPEECH },
691
692 /* Actions Semiconductor ATS2851 based devices */
693 { USB_DEVICE(0x10d7, 0xb012), .driver_info = BTUSB_ACTIONS_SEMI },
694
695 /* Silicon Wave based devices */
696 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
697
698 { } /* Terminating entry */
699 };
700
701 /* The Bluetooth USB module build into some devices needs to be reset on resume,
702 * this is a problem with the platform (likely shutting off all power) not with
703 * the module itself. So we use a DMI list to match known broken platforms.
704 */
705 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
706 {
707 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
708 .matches = {
709 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
710 DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
711 },
712 },
713 {
714 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
715 .matches = {
716 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
717 DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
718 },
719 },
720 {
721 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
722 .matches = {
723 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
724 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
725 },
726 },
727 {}
728 };
729
730 #define BTUSB_MAX_ISOC_FRAMES 10
731
732 #define BTUSB_INTR_RUNNING 0
733 #define BTUSB_BULK_RUNNING 1
734 #define BTUSB_ISOC_RUNNING 2
735 #define BTUSB_SUSPENDING 3
736 #define BTUSB_DID_ISO_RESUME 4
737 #define BTUSB_BOOTLOADER 5
738 #define BTUSB_DOWNLOADING 6
739 #define BTUSB_FIRMWARE_LOADED 7
740 #define BTUSB_FIRMWARE_FAILED 8
741 #define BTUSB_BOOTING 9
742 #define BTUSB_DIAG_RUNNING 10
743 #define BTUSB_OOB_WAKE_ENABLED 11
744 #define BTUSB_HW_RESET_ACTIVE 12
745 #define BTUSB_TX_WAIT_VND_EVT 13
746 #define BTUSB_WAKEUP_AUTOSUSPEND 14
747 #define BTUSB_USE_ALT3_FOR_WBS 15
748
749 struct btusb_data {
750 struct hci_dev *hdev;
751 struct usb_device *udev;
752 struct usb_interface *intf;
753 struct usb_interface *isoc;
754 struct usb_interface *diag;
755 unsigned isoc_ifnum;
756
757 unsigned long flags;
758
759 bool poll_sync;
760 int intr_interval;
761 struct work_struct work;
762 struct work_struct waker;
763 struct delayed_work rx_work;
764
765 struct sk_buff_head acl_q;
766
767 struct usb_anchor deferred;
768 struct usb_anchor tx_anchor;
769 int tx_in_flight;
770 spinlock_t txlock;
771
772 struct usb_anchor intr_anchor;
773 struct usb_anchor bulk_anchor;
774 struct usb_anchor isoc_anchor;
775 struct usb_anchor diag_anchor;
776 struct usb_anchor ctrl_anchor;
777 spinlock_t rxlock;
778
779 struct sk_buff *evt_skb;
780 struct sk_buff *acl_skb;
781 struct sk_buff *sco_skb;
782
783 struct usb_endpoint_descriptor *intr_ep;
784 struct usb_endpoint_descriptor *bulk_tx_ep;
785 struct usb_endpoint_descriptor *bulk_rx_ep;
786 struct usb_endpoint_descriptor *isoc_tx_ep;
787 struct usb_endpoint_descriptor *isoc_rx_ep;
788 struct usb_endpoint_descriptor *diag_tx_ep;
789 struct usb_endpoint_descriptor *diag_rx_ep;
790
791 struct gpio_desc *reset_gpio;
792
793 __u8 cmdreq_type;
794 __u8 cmdreq;
795
796 unsigned int sco_num;
797 unsigned int air_mode;
798 bool usb_alt6_packet_flow;
799 int isoc_altsetting;
800 int suspend_count;
801
802 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
803 int (*recv_acl)(struct hci_dev *hdev, struct sk_buff *skb);
804 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
805
806 int (*setup_on_usb)(struct hci_dev *hdev);
807
808 int oob_wake_irq; /* irq for out-of-band wake-on-bt */
809 unsigned cmd_timeout_cnt;
810 };
811
btusb_intel_cmd_timeout(struct hci_dev * hdev)812 static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
813 {
814 struct btusb_data *data = hci_get_drvdata(hdev);
815 struct gpio_desc *reset_gpio = data->reset_gpio;
816
817 if (++data->cmd_timeout_cnt < 5)
818 return;
819
820 if (!reset_gpio) {
821 bt_dev_err(hdev, "No way to reset. Ignoring and continuing");
822 return;
823 }
824
825 /*
826 * Toggle the hard reset line if the platform provides one. The reset
827 * is going to yank the device off the USB and then replug. So doing
828 * once is enough. The cleanup is handled correctly on the way out
829 * (standard USB disconnect), and the new device is detected cleanly
830 * and bound to the driver again like it should be.
831 */
832 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
833 bt_dev_err(hdev, "last reset failed? Not resetting again");
834 return;
835 }
836
837 bt_dev_err(hdev, "Initiating HW reset via gpio");
838 gpiod_set_value_cansleep(reset_gpio, 1);
839 msleep(100);
840 gpiod_set_value_cansleep(reset_gpio, 0);
841 }
842
btusb_rtl_cmd_timeout(struct hci_dev * hdev)843 static void btusb_rtl_cmd_timeout(struct hci_dev *hdev)
844 {
845 struct btusb_data *data = hci_get_drvdata(hdev);
846 struct gpio_desc *reset_gpio = data->reset_gpio;
847
848 if (++data->cmd_timeout_cnt < 5)
849 return;
850
851 if (!reset_gpio) {
852 bt_dev_err(hdev, "No gpio to reset Realtek device, ignoring");
853 return;
854 }
855
856 /* Toggle the hard reset line. The Realtek device is going to
857 * yank itself off the USB and then replug. The cleanup is handled
858 * correctly on the way out (standard USB disconnect), and the new
859 * device is detected cleanly and bound to the driver again like
860 * it should be.
861 */
862 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
863 bt_dev_err(hdev, "last reset failed? Not resetting again");
864 return;
865 }
866
867 bt_dev_err(hdev, "Reset Realtek device via gpio");
868 gpiod_set_value_cansleep(reset_gpio, 1);
869 msleep(200);
870 gpiod_set_value_cansleep(reset_gpio, 0);
871 }
872
btusb_qca_cmd_timeout(struct hci_dev * hdev)873 static void btusb_qca_cmd_timeout(struct hci_dev *hdev)
874 {
875 struct btusb_data *data = hci_get_drvdata(hdev);
876 struct gpio_desc *reset_gpio = data->reset_gpio;
877 int err;
878
879 if (++data->cmd_timeout_cnt < 5)
880 return;
881
882 if (reset_gpio) {
883 bt_dev_err(hdev, "Reset qca device via bt_en gpio");
884
885 /* Toggle the hard reset line. The qca bt device is going to
886 * yank itself off the USB and then replug. The cleanup is handled
887 * correctly on the way out (standard USB disconnect), and the new
888 * device is detected cleanly and bound to the driver again like
889 * it should be.
890 */
891 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
892 bt_dev_err(hdev, "last reset failed? Not resetting again");
893 return;
894 }
895
896 gpiod_set_value_cansleep(reset_gpio, 0);
897 msleep(200);
898 gpiod_set_value_cansleep(reset_gpio, 1);
899
900 return;
901 }
902
903 bt_dev_err(hdev, "Multiple cmd timeouts seen. Resetting usb device.");
904 /* This is not an unbalanced PM reference since the device will reset */
905 err = usb_autopm_get_interface(data->intf);
906 if (!err)
907 usb_queue_reset_device(data->intf);
908 else
909 bt_dev_err(hdev, "Failed usb_autopm_get_interface with %d", err);
910 }
911
btusb_free_frags(struct btusb_data * data)912 static inline void btusb_free_frags(struct btusb_data *data)
913 {
914 unsigned long flags;
915
916 spin_lock_irqsave(&data->rxlock, flags);
917
918 dev_kfree_skb_irq(data->evt_skb);
919 data->evt_skb = NULL;
920
921 dev_kfree_skb_irq(data->acl_skb);
922 data->acl_skb = NULL;
923
924 dev_kfree_skb_irq(data->sco_skb);
925 data->sco_skb = NULL;
926
927 spin_unlock_irqrestore(&data->rxlock, flags);
928 }
929
btusb_recv_event(struct btusb_data * data,struct sk_buff * skb)930 static int btusb_recv_event(struct btusb_data *data, struct sk_buff *skb)
931 {
932 if (data->intr_interval) {
933 /* Trigger dequeue immediatelly if an event is received */
934 schedule_delayed_work(&data->rx_work, 0);
935 }
936
937 return data->recv_event(data->hdev, skb);
938 }
939
btusb_recv_intr(struct btusb_data * data,void * buffer,int count)940 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
941 {
942 struct sk_buff *skb;
943 unsigned long flags;
944 int err = 0;
945
946 spin_lock_irqsave(&data->rxlock, flags);
947 skb = data->evt_skb;
948
949 while (count) {
950 int len;
951
952 if (!skb) {
953 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
954 if (!skb) {
955 err = -ENOMEM;
956 break;
957 }
958
959 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
960 hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
961 }
962
963 len = min_t(uint, hci_skb_expect(skb), count);
964 skb_put_data(skb, buffer, len);
965
966 count -= len;
967 buffer += len;
968 hci_skb_expect(skb) -= len;
969
970 if (skb->len == HCI_EVENT_HDR_SIZE) {
971 /* Complete event header */
972 hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
973
974 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
975 kfree_skb(skb);
976 skb = NULL;
977
978 err = -EILSEQ;
979 break;
980 }
981 }
982
983 if (!hci_skb_expect(skb)) {
984 /* Complete frame */
985 btusb_recv_event(data, skb);
986 skb = NULL;
987 }
988 }
989
990 data->evt_skb = skb;
991 spin_unlock_irqrestore(&data->rxlock, flags);
992
993 return err;
994 }
995
btusb_recv_acl(struct btusb_data * data,struct sk_buff * skb)996 static int btusb_recv_acl(struct btusb_data *data, struct sk_buff *skb)
997 {
998 /* Only queue ACL packet if intr_interval is set as it means
999 * force_poll_sync has been enabled.
1000 */
1001 if (!data->intr_interval)
1002 return data->recv_acl(data->hdev, skb);
1003
1004 skb_queue_tail(&data->acl_q, skb);
1005 schedule_delayed_work(&data->rx_work, data->intr_interval);
1006
1007 return 0;
1008 }
1009
btusb_recv_bulk(struct btusb_data * data,void * buffer,int count)1010 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
1011 {
1012 struct sk_buff *skb;
1013 unsigned long flags;
1014 int err = 0;
1015
1016 spin_lock_irqsave(&data->rxlock, flags);
1017 skb = data->acl_skb;
1018
1019 while (count) {
1020 int len;
1021
1022 if (!skb) {
1023 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
1024 if (!skb) {
1025 err = -ENOMEM;
1026 break;
1027 }
1028
1029 hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
1030 hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
1031 }
1032
1033 len = min_t(uint, hci_skb_expect(skb), count);
1034 skb_put_data(skb, buffer, len);
1035
1036 count -= len;
1037 buffer += len;
1038 hci_skb_expect(skb) -= len;
1039
1040 if (skb->len == HCI_ACL_HDR_SIZE) {
1041 __le16 dlen = hci_acl_hdr(skb)->dlen;
1042
1043 /* Complete ACL header */
1044 hci_skb_expect(skb) = __le16_to_cpu(dlen);
1045
1046 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
1047 kfree_skb(skb);
1048 skb = NULL;
1049
1050 err = -EILSEQ;
1051 break;
1052 }
1053 }
1054
1055 if (!hci_skb_expect(skb)) {
1056 /* Complete frame */
1057 btusb_recv_acl(data, skb);
1058 skb = NULL;
1059 }
1060 }
1061
1062 data->acl_skb = skb;
1063 spin_unlock_irqrestore(&data->rxlock, flags);
1064
1065 return err;
1066 }
1067
btusb_recv_isoc(struct btusb_data * data,void * buffer,int count)1068 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
1069 {
1070 struct sk_buff *skb;
1071 unsigned long flags;
1072 int err = 0;
1073
1074 spin_lock_irqsave(&data->rxlock, flags);
1075 skb = data->sco_skb;
1076
1077 while (count) {
1078 int len;
1079
1080 if (!skb) {
1081 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
1082 if (!skb) {
1083 err = -ENOMEM;
1084 break;
1085 }
1086
1087 hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
1088 hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
1089 }
1090
1091 len = min_t(uint, hci_skb_expect(skb), count);
1092 skb_put_data(skb, buffer, len);
1093
1094 count -= len;
1095 buffer += len;
1096 hci_skb_expect(skb) -= len;
1097
1098 if (skb->len == HCI_SCO_HDR_SIZE) {
1099 /* Complete SCO header */
1100 hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
1101
1102 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
1103 kfree_skb(skb);
1104 skb = NULL;
1105
1106 err = -EILSEQ;
1107 break;
1108 }
1109 }
1110
1111 if (!hci_skb_expect(skb)) {
1112 /* Complete frame */
1113 hci_recv_frame(data->hdev, skb);
1114 skb = NULL;
1115 }
1116 }
1117
1118 data->sco_skb = skb;
1119 spin_unlock_irqrestore(&data->rxlock, flags);
1120
1121 return err;
1122 }
1123
btusb_intr_complete(struct urb * urb)1124 static void btusb_intr_complete(struct urb *urb)
1125 {
1126 struct hci_dev *hdev = urb->context;
1127 struct btusb_data *data = hci_get_drvdata(hdev);
1128 int err;
1129
1130 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1131 urb->actual_length);
1132
1133 if (!test_bit(HCI_RUNNING, &hdev->flags))
1134 return;
1135
1136 if (urb->status == 0) {
1137 hdev->stat.byte_rx += urb->actual_length;
1138
1139 if (btusb_recv_intr(data, urb->transfer_buffer,
1140 urb->actual_length) < 0) {
1141 bt_dev_err(hdev, "corrupted event packet");
1142 hdev->stat.err_rx++;
1143 }
1144 } else if (urb->status == -ENOENT) {
1145 /* Avoid suspend failed when usb_kill_urb */
1146 return;
1147 }
1148
1149 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
1150 return;
1151
1152 usb_mark_last_busy(data->udev);
1153 usb_anchor_urb(urb, &data->intr_anchor);
1154
1155 err = usb_submit_urb(urb, GFP_ATOMIC);
1156 if (err < 0) {
1157 /* -EPERM: urb is being killed;
1158 * -ENODEV: device got disconnected
1159 */
1160 if (err != -EPERM && err != -ENODEV)
1161 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1162 urb, -err);
1163 if (err != -EPERM)
1164 hci_cmd_sync_cancel(hdev, -err);
1165 usb_unanchor_urb(urb);
1166 }
1167 }
1168
btusb_submit_intr_urb(struct hci_dev * hdev,gfp_t mem_flags)1169 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
1170 {
1171 struct btusb_data *data = hci_get_drvdata(hdev);
1172 struct urb *urb;
1173 unsigned char *buf;
1174 unsigned int pipe;
1175 int err, size;
1176
1177 BT_DBG("%s", hdev->name);
1178
1179 if (!data->intr_ep)
1180 return -ENODEV;
1181
1182 urb = usb_alloc_urb(0, mem_flags);
1183 if (!urb)
1184 return -ENOMEM;
1185
1186 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
1187
1188 buf = kmalloc(size, mem_flags);
1189 if (!buf) {
1190 usb_free_urb(urb);
1191 return -ENOMEM;
1192 }
1193
1194 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
1195
1196 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
1197 btusb_intr_complete, hdev, data->intr_ep->bInterval);
1198
1199 urb->transfer_flags |= URB_FREE_BUFFER;
1200
1201 usb_anchor_urb(urb, &data->intr_anchor);
1202
1203 err = usb_submit_urb(urb, mem_flags);
1204 if (err < 0) {
1205 if (err != -EPERM && err != -ENODEV)
1206 bt_dev_err(hdev, "urb %p submission failed (%d)",
1207 urb, -err);
1208 if (err != -EPERM)
1209 hci_cmd_sync_cancel(hdev, -err);
1210 usb_unanchor_urb(urb);
1211 }
1212
1213 /* Only initialize intr_interval if URB poll sync is enabled */
1214 if (!data->poll_sync)
1215 goto done;
1216
1217 /* The units are frames (milliseconds) for full and low speed devices,
1218 * and microframes (1/8 millisecond) for highspeed and SuperSpeed
1219 * devices.
1220 *
1221 * This is done once on open/resume so it shouldn't change even if
1222 * force_poll_sync changes.
1223 */
1224 switch (urb->dev->speed) {
1225 case USB_SPEED_SUPER_PLUS:
1226 case USB_SPEED_SUPER: /* units are 125us */
1227 data->intr_interval = usecs_to_jiffies(urb->interval * 125);
1228 break;
1229 default:
1230 data->intr_interval = msecs_to_jiffies(urb->interval);
1231 break;
1232 }
1233
1234 done:
1235 usb_free_urb(urb);
1236
1237 return err;
1238 }
1239
btusb_bulk_complete(struct urb * urb)1240 static void btusb_bulk_complete(struct urb *urb)
1241 {
1242 struct hci_dev *hdev = urb->context;
1243 struct btusb_data *data = hci_get_drvdata(hdev);
1244 int err;
1245
1246 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1247 urb->actual_length);
1248
1249 if (!test_bit(HCI_RUNNING, &hdev->flags))
1250 return;
1251
1252 if (urb->status == 0) {
1253 hdev->stat.byte_rx += urb->actual_length;
1254
1255 if (data->recv_bulk(data, urb->transfer_buffer,
1256 urb->actual_length) < 0) {
1257 bt_dev_err(hdev, "corrupted ACL packet");
1258 hdev->stat.err_rx++;
1259 }
1260 } else if (urb->status == -ENOENT) {
1261 /* Avoid suspend failed when usb_kill_urb */
1262 return;
1263 }
1264
1265 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
1266 return;
1267
1268 usb_anchor_urb(urb, &data->bulk_anchor);
1269 usb_mark_last_busy(data->udev);
1270
1271 err = usb_submit_urb(urb, GFP_ATOMIC);
1272 if (err < 0) {
1273 /* -EPERM: urb is being killed;
1274 * -ENODEV: device got disconnected
1275 */
1276 if (err != -EPERM && err != -ENODEV)
1277 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1278 urb, -err);
1279 usb_unanchor_urb(urb);
1280 }
1281 }
1282
btusb_submit_bulk_urb(struct hci_dev * hdev,gfp_t mem_flags)1283 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
1284 {
1285 struct btusb_data *data = hci_get_drvdata(hdev);
1286 struct urb *urb;
1287 unsigned char *buf;
1288 unsigned int pipe;
1289 int err, size = HCI_MAX_FRAME_SIZE;
1290
1291 BT_DBG("%s", hdev->name);
1292
1293 if (!data->bulk_rx_ep)
1294 return -ENODEV;
1295
1296 urb = usb_alloc_urb(0, mem_flags);
1297 if (!urb)
1298 return -ENOMEM;
1299
1300 buf = kmalloc(size, mem_flags);
1301 if (!buf) {
1302 usb_free_urb(urb);
1303 return -ENOMEM;
1304 }
1305
1306 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
1307
1308 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1309 btusb_bulk_complete, hdev);
1310
1311 urb->transfer_flags |= URB_FREE_BUFFER;
1312
1313 usb_mark_last_busy(data->udev);
1314 usb_anchor_urb(urb, &data->bulk_anchor);
1315
1316 err = usb_submit_urb(urb, mem_flags);
1317 if (err < 0) {
1318 if (err != -EPERM && err != -ENODEV)
1319 bt_dev_err(hdev, "urb %p submission failed (%d)",
1320 urb, -err);
1321 usb_unanchor_urb(urb);
1322 }
1323
1324 usb_free_urb(urb);
1325
1326 return err;
1327 }
1328
btusb_isoc_complete(struct urb * urb)1329 static void btusb_isoc_complete(struct urb *urb)
1330 {
1331 struct hci_dev *hdev = urb->context;
1332 struct btusb_data *data = hci_get_drvdata(hdev);
1333 int i, err;
1334
1335 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1336 urb->actual_length);
1337
1338 if (!test_bit(HCI_RUNNING, &hdev->flags))
1339 return;
1340
1341 if (urb->status == 0) {
1342 for (i = 0; i < urb->number_of_packets; i++) {
1343 unsigned int offset = urb->iso_frame_desc[i].offset;
1344 unsigned int length = urb->iso_frame_desc[i].actual_length;
1345
1346 if (urb->iso_frame_desc[i].status)
1347 continue;
1348
1349 hdev->stat.byte_rx += length;
1350
1351 if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
1352 length) < 0) {
1353 bt_dev_err(hdev, "corrupted SCO packet");
1354 hdev->stat.err_rx++;
1355 }
1356 }
1357 } else if (urb->status == -ENOENT) {
1358 /* Avoid suspend failed when usb_kill_urb */
1359 return;
1360 }
1361
1362 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
1363 return;
1364
1365 usb_anchor_urb(urb, &data->isoc_anchor);
1366
1367 err = usb_submit_urb(urb, GFP_ATOMIC);
1368 if (err < 0) {
1369 /* -EPERM: urb is being killed;
1370 * -ENODEV: device got disconnected
1371 */
1372 if (err != -EPERM && err != -ENODEV)
1373 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1374 urb, -err);
1375 usb_unanchor_urb(urb);
1376 }
1377 }
1378
__fill_isoc_descriptor_msbc(struct urb * urb,int len,int mtu,struct btusb_data * data)1379 static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len,
1380 int mtu, struct btusb_data *data)
1381 {
1382 int i, offset = 0;
1383 unsigned int interval;
1384
1385 BT_DBG("len %d mtu %d", len, mtu);
1386
1387 /* For mSBC ALT 6 setting the host will send the packet at continuous
1388 * flow. As per core spec 5, vol 4, part B, table 2.1. For ALT setting
1389 * 6 the HCI PACKET INTERVAL should be 7.5ms for every usb packets.
1390 * To maintain the rate we send 63bytes of usb packets alternatively for
1391 * 7ms and 8ms to maintain the rate as 7.5ms.
1392 */
1393 if (data->usb_alt6_packet_flow) {
1394 interval = 7;
1395 data->usb_alt6_packet_flow = false;
1396 } else {
1397 interval = 6;
1398 data->usb_alt6_packet_flow = true;
1399 }
1400
1401 for (i = 0; i < interval; i++) {
1402 urb->iso_frame_desc[i].offset = offset;
1403 urb->iso_frame_desc[i].length = offset;
1404 }
1405
1406 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1407 urb->iso_frame_desc[i].offset = offset;
1408 urb->iso_frame_desc[i].length = len;
1409 i++;
1410 }
1411
1412 urb->number_of_packets = i;
1413 }
1414
__fill_isoc_descriptor(struct urb * urb,int len,int mtu)1415 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
1416 {
1417 int i, offset = 0;
1418
1419 BT_DBG("len %d mtu %d", len, mtu);
1420
1421 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
1422 i++, offset += mtu, len -= mtu) {
1423 urb->iso_frame_desc[i].offset = offset;
1424 urb->iso_frame_desc[i].length = mtu;
1425 }
1426
1427 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1428 urb->iso_frame_desc[i].offset = offset;
1429 urb->iso_frame_desc[i].length = len;
1430 i++;
1431 }
1432
1433 urb->number_of_packets = i;
1434 }
1435
btusb_submit_isoc_urb(struct hci_dev * hdev,gfp_t mem_flags)1436 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
1437 {
1438 struct btusb_data *data = hci_get_drvdata(hdev);
1439 struct urb *urb;
1440 unsigned char *buf;
1441 unsigned int pipe;
1442 int err, size;
1443
1444 BT_DBG("%s", hdev->name);
1445
1446 if (!data->isoc_rx_ep)
1447 return -ENODEV;
1448
1449 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
1450 if (!urb)
1451 return -ENOMEM;
1452
1453 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
1454 BTUSB_MAX_ISOC_FRAMES;
1455
1456 buf = kmalloc(size, mem_flags);
1457 if (!buf) {
1458 usb_free_urb(urb);
1459 return -ENOMEM;
1460 }
1461
1462 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
1463
1464 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
1465 hdev, data->isoc_rx_ep->bInterval);
1466
1467 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
1468
1469 __fill_isoc_descriptor(urb, size,
1470 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
1471
1472 usb_anchor_urb(urb, &data->isoc_anchor);
1473
1474 err = usb_submit_urb(urb, mem_flags);
1475 if (err < 0) {
1476 if (err != -EPERM && err != -ENODEV)
1477 bt_dev_err(hdev, "urb %p submission failed (%d)",
1478 urb, -err);
1479 usb_unanchor_urb(urb);
1480 }
1481
1482 usb_free_urb(urb);
1483
1484 return err;
1485 }
1486
btusb_diag_complete(struct urb * urb)1487 static void btusb_diag_complete(struct urb *urb)
1488 {
1489 struct hci_dev *hdev = urb->context;
1490 struct btusb_data *data = hci_get_drvdata(hdev);
1491 int err;
1492
1493 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1494 urb->actual_length);
1495
1496 if (urb->status == 0) {
1497 struct sk_buff *skb;
1498
1499 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1500 if (skb) {
1501 skb_put_data(skb, urb->transfer_buffer,
1502 urb->actual_length);
1503 hci_recv_diag(hdev, skb);
1504 }
1505 } else if (urb->status == -ENOENT) {
1506 /* Avoid suspend failed when usb_kill_urb */
1507 return;
1508 }
1509
1510 if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1511 return;
1512
1513 usb_anchor_urb(urb, &data->diag_anchor);
1514 usb_mark_last_busy(data->udev);
1515
1516 err = usb_submit_urb(urb, GFP_ATOMIC);
1517 if (err < 0) {
1518 /* -EPERM: urb is being killed;
1519 * -ENODEV: device got disconnected
1520 */
1521 if (err != -EPERM && err != -ENODEV)
1522 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1523 urb, -err);
1524 usb_unanchor_urb(urb);
1525 }
1526 }
1527
btusb_submit_diag_urb(struct hci_dev * hdev,gfp_t mem_flags)1528 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1529 {
1530 struct btusb_data *data = hci_get_drvdata(hdev);
1531 struct urb *urb;
1532 unsigned char *buf;
1533 unsigned int pipe;
1534 int err, size = HCI_MAX_FRAME_SIZE;
1535
1536 BT_DBG("%s", hdev->name);
1537
1538 if (!data->diag_rx_ep)
1539 return -ENODEV;
1540
1541 urb = usb_alloc_urb(0, mem_flags);
1542 if (!urb)
1543 return -ENOMEM;
1544
1545 buf = kmalloc(size, mem_flags);
1546 if (!buf) {
1547 usb_free_urb(urb);
1548 return -ENOMEM;
1549 }
1550
1551 pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1552
1553 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1554 btusb_diag_complete, hdev);
1555
1556 urb->transfer_flags |= URB_FREE_BUFFER;
1557
1558 usb_mark_last_busy(data->udev);
1559 usb_anchor_urb(urb, &data->diag_anchor);
1560
1561 err = usb_submit_urb(urb, mem_flags);
1562 if (err < 0) {
1563 if (err != -EPERM && err != -ENODEV)
1564 bt_dev_err(hdev, "urb %p submission failed (%d)",
1565 urb, -err);
1566 usb_unanchor_urb(urb);
1567 }
1568
1569 usb_free_urb(urb);
1570
1571 return err;
1572 }
1573
btusb_tx_complete(struct urb * urb)1574 static void btusb_tx_complete(struct urb *urb)
1575 {
1576 struct sk_buff *skb = urb->context;
1577 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1578 struct btusb_data *data = hci_get_drvdata(hdev);
1579 unsigned long flags;
1580
1581 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1582 urb->actual_length);
1583
1584 if (!test_bit(HCI_RUNNING, &hdev->flags))
1585 goto done;
1586
1587 if (!urb->status) {
1588 hdev->stat.byte_tx += urb->transfer_buffer_length;
1589 } else {
1590 if (hci_skb_pkt_type(skb) == HCI_COMMAND_PKT)
1591 hci_cmd_sync_cancel(hdev, -urb->status);
1592 hdev->stat.err_tx++;
1593 }
1594
1595 done:
1596 spin_lock_irqsave(&data->txlock, flags);
1597 data->tx_in_flight--;
1598 spin_unlock_irqrestore(&data->txlock, flags);
1599
1600 kfree(urb->setup_packet);
1601
1602 kfree_skb(skb);
1603 }
1604
btusb_isoc_tx_complete(struct urb * urb)1605 static void btusb_isoc_tx_complete(struct urb *urb)
1606 {
1607 struct sk_buff *skb = urb->context;
1608 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1609
1610 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1611 urb->actual_length);
1612
1613 if (!test_bit(HCI_RUNNING, &hdev->flags))
1614 goto done;
1615
1616 if (!urb->status)
1617 hdev->stat.byte_tx += urb->transfer_buffer_length;
1618 else
1619 hdev->stat.err_tx++;
1620
1621 done:
1622 kfree(urb->setup_packet);
1623
1624 kfree_skb(skb);
1625 }
1626
btusb_open(struct hci_dev * hdev)1627 static int btusb_open(struct hci_dev *hdev)
1628 {
1629 struct btusb_data *data = hci_get_drvdata(hdev);
1630 int err;
1631
1632 BT_DBG("%s", hdev->name);
1633
1634 err = usb_autopm_get_interface(data->intf);
1635 if (err < 0)
1636 return err;
1637
1638 /* Patching USB firmware files prior to starting any URBs of HCI path
1639 * It is more safe to use USB bulk channel for downloading USB patch
1640 */
1641 if (data->setup_on_usb) {
1642 err = data->setup_on_usb(hdev);
1643 if (err < 0)
1644 goto setup_fail;
1645 }
1646
1647 data->intf->needs_remote_wakeup = 1;
1648
1649 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1650 goto done;
1651
1652 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1653 if (err < 0)
1654 goto failed;
1655
1656 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1657 if (err < 0) {
1658 usb_kill_anchored_urbs(&data->intr_anchor);
1659 goto failed;
1660 }
1661
1662 set_bit(BTUSB_BULK_RUNNING, &data->flags);
1663 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1664
1665 if (data->diag) {
1666 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1667 set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1668 }
1669
1670 done:
1671 usb_autopm_put_interface(data->intf);
1672 return 0;
1673
1674 failed:
1675 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1676 setup_fail:
1677 usb_autopm_put_interface(data->intf);
1678 return err;
1679 }
1680
btusb_stop_traffic(struct btusb_data * data)1681 static void btusb_stop_traffic(struct btusb_data *data)
1682 {
1683 usb_kill_anchored_urbs(&data->intr_anchor);
1684 usb_kill_anchored_urbs(&data->bulk_anchor);
1685 usb_kill_anchored_urbs(&data->isoc_anchor);
1686 usb_kill_anchored_urbs(&data->diag_anchor);
1687 usb_kill_anchored_urbs(&data->ctrl_anchor);
1688 }
1689
btusb_close(struct hci_dev * hdev)1690 static int btusb_close(struct hci_dev *hdev)
1691 {
1692 struct btusb_data *data = hci_get_drvdata(hdev);
1693 int err;
1694
1695 BT_DBG("%s", hdev->name);
1696
1697 cancel_delayed_work(&data->rx_work);
1698 cancel_work_sync(&data->work);
1699 cancel_work_sync(&data->waker);
1700
1701 skb_queue_purge(&data->acl_q);
1702
1703 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1704 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1705 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1706 clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1707
1708 btusb_stop_traffic(data);
1709 btusb_free_frags(data);
1710
1711 err = usb_autopm_get_interface(data->intf);
1712 if (err < 0)
1713 goto failed;
1714
1715 data->intf->needs_remote_wakeup = 0;
1716
1717 /* Enable remote wake up for auto-suspend */
1718 if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags))
1719 data->intf->needs_remote_wakeup = 1;
1720
1721 usb_autopm_put_interface(data->intf);
1722
1723 failed:
1724 usb_scuttle_anchored_urbs(&data->deferred);
1725 return 0;
1726 }
1727
btusb_flush(struct hci_dev * hdev)1728 static int btusb_flush(struct hci_dev *hdev)
1729 {
1730 struct btusb_data *data = hci_get_drvdata(hdev);
1731
1732 BT_DBG("%s", hdev->name);
1733
1734 cancel_delayed_work(&data->rx_work);
1735
1736 skb_queue_purge(&data->acl_q);
1737
1738 usb_kill_anchored_urbs(&data->tx_anchor);
1739 btusb_free_frags(data);
1740
1741 return 0;
1742 }
1743
alloc_ctrl_urb(struct hci_dev * hdev,struct sk_buff * skb)1744 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1745 {
1746 struct btusb_data *data = hci_get_drvdata(hdev);
1747 struct usb_ctrlrequest *dr;
1748 struct urb *urb;
1749 unsigned int pipe;
1750
1751 urb = usb_alloc_urb(0, GFP_KERNEL);
1752 if (!urb)
1753 return ERR_PTR(-ENOMEM);
1754
1755 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1756 if (!dr) {
1757 usb_free_urb(urb);
1758 return ERR_PTR(-ENOMEM);
1759 }
1760
1761 dr->bRequestType = data->cmdreq_type;
1762 dr->bRequest = data->cmdreq;
1763 dr->wIndex = 0;
1764 dr->wValue = 0;
1765 dr->wLength = __cpu_to_le16(skb->len);
1766
1767 pipe = usb_sndctrlpipe(data->udev, 0x00);
1768
1769 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1770 skb->data, skb->len, btusb_tx_complete, skb);
1771
1772 skb->dev = (void *)hdev;
1773
1774 return urb;
1775 }
1776
alloc_bulk_urb(struct hci_dev * hdev,struct sk_buff * skb)1777 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1778 {
1779 struct btusb_data *data = hci_get_drvdata(hdev);
1780 struct urb *urb;
1781 unsigned int pipe;
1782
1783 if (!data->bulk_tx_ep)
1784 return ERR_PTR(-ENODEV);
1785
1786 urb = usb_alloc_urb(0, GFP_KERNEL);
1787 if (!urb)
1788 return ERR_PTR(-ENOMEM);
1789
1790 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1791
1792 usb_fill_bulk_urb(urb, data->udev, pipe,
1793 skb->data, skb->len, btusb_tx_complete, skb);
1794
1795 skb->dev = (void *)hdev;
1796
1797 return urb;
1798 }
1799
alloc_isoc_urb(struct hci_dev * hdev,struct sk_buff * skb)1800 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1801 {
1802 struct btusb_data *data = hci_get_drvdata(hdev);
1803 struct urb *urb;
1804 unsigned int pipe;
1805
1806 if (!data->isoc_tx_ep)
1807 return ERR_PTR(-ENODEV);
1808
1809 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1810 if (!urb)
1811 return ERR_PTR(-ENOMEM);
1812
1813 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1814
1815 usb_fill_int_urb(urb, data->udev, pipe,
1816 skb->data, skb->len, btusb_isoc_tx_complete,
1817 skb, data->isoc_tx_ep->bInterval);
1818
1819 urb->transfer_flags = URB_ISO_ASAP;
1820
1821 if (data->isoc_altsetting == 6)
1822 __fill_isoc_descriptor_msbc(urb, skb->len,
1823 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize),
1824 data);
1825 else
1826 __fill_isoc_descriptor(urb, skb->len,
1827 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1828 skb->dev = (void *)hdev;
1829
1830 return urb;
1831 }
1832
submit_tx_urb(struct hci_dev * hdev,struct urb * urb)1833 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1834 {
1835 struct btusb_data *data = hci_get_drvdata(hdev);
1836 int err;
1837
1838 usb_anchor_urb(urb, &data->tx_anchor);
1839
1840 err = usb_submit_urb(urb, GFP_KERNEL);
1841 if (err < 0) {
1842 if (err != -EPERM && err != -ENODEV)
1843 bt_dev_err(hdev, "urb %p submission failed (%d)",
1844 urb, -err);
1845 kfree(urb->setup_packet);
1846 usb_unanchor_urb(urb);
1847 } else {
1848 usb_mark_last_busy(data->udev);
1849 }
1850
1851 usb_free_urb(urb);
1852 return err;
1853 }
1854
submit_or_queue_tx_urb(struct hci_dev * hdev,struct urb * urb)1855 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1856 {
1857 struct btusb_data *data = hci_get_drvdata(hdev);
1858 unsigned long flags;
1859 bool suspending;
1860
1861 spin_lock_irqsave(&data->txlock, flags);
1862 suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1863 if (!suspending)
1864 data->tx_in_flight++;
1865 spin_unlock_irqrestore(&data->txlock, flags);
1866
1867 if (!suspending)
1868 return submit_tx_urb(hdev, urb);
1869
1870 usb_anchor_urb(urb, &data->deferred);
1871 schedule_work(&data->waker);
1872
1873 usb_free_urb(urb);
1874 return 0;
1875 }
1876
btusb_send_frame(struct hci_dev * hdev,struct sk_buff * skb)1877 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1878 {
1879 struct urb *urb;
1880
1881 BT_DBG("%s", hdev->name);
1882
1883 switch (hci_skb_pkt_type(skb)) {
1884 case HCI_COMMAND_PKT:
1885 urb = alloc_ctrl_urb(hdev, skb);
1886 if (IS_ERR(urb))
1887 return PTR_ERR(urb);
1888
1889 hdev->stat.cmd_tx++;
1890 return submit_or_queue_tx_urb(hdev, urb);
1891
1892 case HCI_ACLDATA_PKT:
1893 urb = alloc_bulk_urb(hdev, skb);
1894 if (IS_ERR(urb))
1895 return PTR_ERR(urb);
1896
1897 hdev->stat.acl_tx++;
1898 return submit_or_queue_tx_urb(hdev, urb);
1899
1900 case HCI_SCODATA_PKT:
1901 if (hci_conn_num(hdev, SCO_LINK) < 1)
1902 return -ENODEV;
1903
1904 urb = alloc_isoc_urb(hdev, skb);
1905 if (IS_ERR(urb))
1906 return PTR_ERR(urb);
1907
1908 hdev->stat.sco_tx++;
1909 return submit_tx_urb(hdev, urb);
1910
1911 case HCI_ISODATA_PKT:
1912 urb = alloc_bulk_urb(hdev, skb);
1913 if (IS_ERR(urb))
1914 return PTR_ERR(urb);
1915
1916 return submit_or_queue_tx_urb(hdev, urb);
1917 }
1918
1919 return -EILSEQ;
1920 }
1921
btusb_notify(struct hci_dev * hdev,unsigned int evt)1922 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1923 {
1924 struct btusb_data *data = hci_get_drvdata(hdev);
1925
1926 BT_DBG("%s evt %d", hdev->name, evt);
1927
1928 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1929 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1930 data->air_mode = evt;
1931 schedule_work(&data->work);
1932 }
1933 }
1934
__set_isoc_interface(struct hci_dev * hdev,int altsetting)1935 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1936 {
1937 struct btusb_data *data = hci_get_drvdata(hdev);
1938 struct usb_interface *intf = data->isoc;
1939 struct usb_endpoint_descriptor *ep_desc;
1940 int i, err;
1941
1942 if (!data->isoc)
1943 return -ENODEV;
1944
1945 err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1946 if (err < 0) {
1947 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1948 return err;
1949 }
1950
1951 data->isoc_altsetting = altsetting;
1952
1953 data->isoc_tx_ep = NULL;
1954 data->isoc_rx_ep = NULL;
1955
1956 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1957 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1958
1959 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1960 data->isoc_tx_ep = ep_desc;
1961 continue;
1962 }
1963
1964 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1965 data->isoc_rx_ep = ep_desc;
1966 continue;
1967 }
1968 }
1969
1970 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1971 bt_dev_err(hdev, "invalid SCO descriptors");
1972 return -ENODEV;
1973 }
1974
1975 return 0;
1976 }
1977
btusb_switch_alt_setting(struct hci_dev * hdev,int new_alts)1978 static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts)
1979 {
1980 struct btusb_data *data = hci_get_drvdata(hdev);
1981 int err;
1982
1983 if (data->isoc_altsetting != new_alts) {
1984 unsigned long flags;
1985
1986 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1987 usb_kill_anchored_urbs(&data->isoc_anchor);
1988
1989 /* When isochronous alternate setting needs to be
1990 * changed, because SCO connection has been added
1991 * or removed, a packet fragment may be left in the
1992 * reassembling state. This could lead to wrongly
1993 * assembled fragments.
1994 *
1995 * Clear outstanding fragment when selecting a new
1996 * alternate setting.
1997 */
1998 spin_lock_irqsave(&data->rxlock, flags);
1999 dev_kfree_skb_irq(data->sco_skb);
2000 data->sco_skb = NULL;
2001 spin_unlock_irqrestore(&data->rxlock, flags);
2002
2003 err = __set_isoc_interface(hdev, new_alts);
2004 if (err < 0)
2005 return err;
2006 }
2007
2008 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2009 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
2010 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2011 else
2012 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
2013 }
2014
2015 return 0;
2016 }
2017
btusb_find_altsetting(struct btusb_data * data,int alt)2018 static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data,
2019 int alt)
2020 {
2021 struct usb_interface *intf = data->isoc;
2022 int i;
2023
2024 BT_DBG("Looking for Alt no :%d", alt);
2025
2026 if (!intf)
2027 return NULL;
2028
2029 for (i = 0; i < intf->num_altsetting; i++) {
2030 if (intf->altsetting[i].desc.bAlternateSetting == alt)
2031 return &intf->altsetting[i];
2032 }
2033
2034 return NULL;
2035 }
2036
btusb_work(struct work_struct * work)2037 static void btusb_work(struct work_struct *work)
2038 {
2039 struct btusb_data *data = container_of(work, struct btusb_data, work);
2040 struct hci_dev *hdev = data->hdev;
2041 int new_alts = 0;
2042 int err;
2043
2044 if (data->sco_num > 0) {
2045 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
2046 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
2047 if (err < 0) {
2048 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2049 usb_kill_anchored_urbs(&data->isoc_anchor);
2050 return;
2051 }
2052
2053 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
2054 }
2055
2056 if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_CVSD) {
2057 if (hdev->voice_setting & 0x0020) {
2058 static const int alts[3] = { 2, 4, 5 };
2059
2060 new_alts = alts[data->sco_num - 1];
2061 } else {
2062 new_alts = data->sco_num;
2063 }
2064 } else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) {
2065 /* Bluetooth USB spec recommends alt 6 (63 bytes), but
2066 * many adapters do not support it. Alt 1 appears to
2067 * work for all adapters that do not have alt 6, and
2068 * which work with WBS at all. Some devices prefer
2069 * alt 3 (HCI payload >= 60 Bytes let air packet
2070 * data satisfy 60 bytes), requiring
2071 * MTU >= 3 (packets) * 25 (size) - 3 (headers) = 72
2072 * see also Core spec 5, vol 4, B 2.1.1 & Table 2.1.
2073 */
2074 if (btusb_find_altsetting(data, 6))
2075 new_alts = 6;
2076 else if (btusb_find_altsetting(data, 3) &&
2077 hdev->sco_mtu >= 72 &&
2078 test_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags))
2079 new_alts = 3;
2080 else
2081 new_alts = 1;
2082 }
2083
2084 if (btusb_switch_alt_setting(hdev, new_alts) < 0)
2085 bt_dev_err(hdev, "set USB alt:(%d) failed!", new_alts);
2086 } else {
2087 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2088 usb_kill_anchored_urbs(&data->isoc_anchor);
2089
2090 __set_isoc_interface(hdev, 0);
2091 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
2092 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
2093 }
2094 }
2095
btusb_waker(struct work_struct * work)2096 static void btusb_waker(struct work_struct *work)
2097 {
2098 struct btusb_data *data = container_of(work, struct btusb_data, waker);
2099 int err;
2100
2101 err = usb_autopm_get_interface(data->intf);
2102 if (err < 0)
2103 return;
2104
2105 usb_autopm_put_interface(data->intf);
2106 }
2107
btusb_rx_work(struct work_struct * work)2108 static void btusb_rx_work(struct work_struct *work)
2109 {
2110 struct btusb_data *data = container_of(work, struct btusb_data,
2111 rx_work.work);
2112 struct sk_buff *skb;
2113
2114 /* Dequeue ACL data received during the interval */
2115 while ((skb = skb_dequeue(&data->acl_q)))
2116 data->recv_acl(data->hdev, skb);
2117 }
2118
btusb_setup_bcm92035(struct hci_dev * hdev)2119 static int btusb_setup_bcm92035(struct hci_dev *hdev)
2120 {
2121 struct sk_buff *skb;
2122 u8 val = 0x00;
2123
2124 BT_DBG("%s", hdev->name);
2125
2126 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
2127 if (IS_ERR(skb))
2128 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
2129 else
2130 kfree_skb(skb);
2131
2132 return 0;
2133 }
2134
btusb_setup_csr(struct hci_dev * hdev)2135 static int btusb_setup_csr(struct hci_dev *hdev)
2136 {
2137 struct btusb_data *data = hci_get_drvdata(hdev);
2138 u16 bcdDevice = le16_to_cpu(data->udev->descriptor.bcdDevice);
2139 struct hci_rp_read_local_version *rp;
2140 struct sk_buff *skb;
2141 bool is_fake = false;
2142 int ret;
2143
2144 BT_DBG("%s", hdev->name);
2145
2146 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
2147 HCI_INIT_TIMEOUT);
2148 if (IS_ERR(skb)) {
2149 int err = PTR_ERR(skb);
2150 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
2151 return err;
2152 }
2153
2154 if (skb->len != sizeof(struct hci_rp_read_local_version)) {
2155 bt_dev_err(hdev, "CSR: Local version length mismatch");
2156 kfree_skb(skb);
2157 return -EIO;
2158 }
2159
2160 rp = (struct hci_rp_read_local_version *)skb->data;
2161
2162 bt_dev_info(hdev, "CSR: Setting up dongle with HCI ver=%u rev=%04x; LMP ver=%u subver=%04x; manufacturer=%u",
2163 le16_to_cpu(rp->hci_ver), le16_to_cpu(rp->hci_rev),
2164 le16_to_cpu(rp->lmp_ver), le16_to_cpu(rp->lmp_subver),
2165 le16_to_cpu(rp->manufacturer));
2166
2167 /* Detect a wide host of Chinese controllers that aren't CSR.
2168 *
2169 * Known fake bcdDevices: 0x0100, 0x0134, 0x1915, 0x2520, 0x7558, 0x8891
2170 *
2171 * The main thing they have in common is that these are really popular low-cost
2172 * options that support newer Bluetooth versions but rely on heavy VID/PID
2173 * squatting of this poor old Bluetooth 1.1 device. Even sold as such.
2174 *
2175 * We detect actual CSR devices by checking that the HCI manufacturer code
2176 * is Cambridge Silicon Radio (10) and ensuring that LMP sub-version and
2177 * HCI rev values always match. As they both store the firmware number.
2178 */
2179 if (le16_to_cpu(rp->manufacturer) != 10 ||
2180 le16_to_cpu(rp->hci_rev) != le16_to_cpu(rp->lmp_subver))
2181 is_fake = true;
2182
2183 /* Known legit CSR firmware build numbers and their supported BT versions:
2184 * - 1.1 (0x1) -> 0x0073, 0x020d, 0x033c, 0x034e
2185 * - 1.2 (0x2) -> 0x04d9, 0x0529
2186 * - 2.0 (0x3) -> 0x07a6, 0x07ad, 0x0c5c
2187 * - 2.1 (0x4) -> 0x149c, 0x1735, 0x1899 (0x1899 is a BlueCore4-External)
2188 * - 4.0 (0x6) -> 0x1d86, 0x2031, 0x22bb
2189 *
2190 * e.g. Real CSR dongles with LMP subversion 0x73 are old enough that
2191 * support BT 1.1 only; so it's a dead giveaway when some
2192 * third-party BT 4.0 dongle reuses it.
2193 */
2194 else if (le16_to_cpu(rp->lmp_subver) <= 0x034e &&
2195 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_1)
2196 is_fake = true;
2197
2198 else if (le16_to_cpu(rp->lmp_subver) <= 0x0529 &&
2199 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_2)
2200 is_fake = true;
2201
2202 else if (le16_to_cpu(rp->lmp_subver) <= 0x0c5c &&
2203 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_0)
2204 is_fake = true;
2205
2206 else if (le16_to_cpu(rp->lmp_subver) <= 0x1899 &&
2207 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_1)
2208 is_fake = true;
2209
2210 else if (le16_to_cpu(rp->lmp_subver) <= 0x22bb &&
2211 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_4_0)
2212 is_fake = true;
2213
2214 /* Other clones which beat all the above checks */
2215 else if (bcdDevice == 0x0134 &&
2216 le16_to_cpu(rp->lmp_subver) == 0x0c5c &&
2217 le16_to_cpu(rp->hci_ver) == BLUETOOTH_VER_2_0)
2218 is_fake = true;
2219
2220 if (is_fake) {
2221 bt_dev_warn(hdev, "CSR: Unbranded CSR clone detected; adding workarounds and force-suspending once...");
2222
2223 /* Generally these clones have big discrepancies between
2224 * advertised features and what's actually supported.
2225 * Probably will need to be expanded in the future;
2226 * without these the controller will lock up.
2227 */
2228 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2229 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks);
2230 set_bit(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL, &hdev->quirks);
2231 set_bit(HCI_QUIRK_NO_SUSPEND_NOTIFIER, &hdev->quirks);
2232
2233 /* Clear the reset quirk since this is not an actual
2234 * early Bluetooth 1.1 device from CSR.
2235 */
2236 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2237 clear_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2238
2239 /*
2240 * Special workaround for these BT 4.0 chip clones, and potentially more:
2241 *
2242 * - 0x0134: a Barrot 8041a02 (HCI rev: 0x0810 sub: 0x1012)
2243 * - 0x7558: IC markings FR3191AHAL 749H15143 (HCI rev/sub-version: 0x0709)
2244 *
2245 * These controllers are really messed-up.
2246 *
2247 * 1. Their bulk RX endpoint will never report any data unless
2248 * the device was suspended at least once (yes, really).
2249 * 2. They will not wakeup when autosuspended and receiving data
2250 * on their bulk RX endpoint from e.g. a keyboard or mouse
2251 * (IOW remote-wakeup support is broken for the bulk endpoint).
2252 *
2253 * To fix 1. enable runtime-suspend, force-suspend the
2254 * HCI and then wake-it up by disabling runtime-suspend.
2255 *
2256 * To fix 2. clear the HCI's can_wake flag, this way the HCI
2257 * will still be autosuspended when it is not open.
2258 *
2259 * --
2260 *
2261 * Because these are widespread problems we prefer generic solutions; so
2262 * apply this initialization quirk to every controller that gets here,
2263 * it should be harmless. The alternative is to not work at all.
2264 */
2265 pm_runtime_allow(&data->udev->dev);
2266
2267 ret = pm_runtime_suspend(&data->udev->dev);
2268 if (ret >= 0)
2269 msleep(200);
2270 else
2271 bt_dev_warn(hdev, "CSR: Couldn't suspend the device for our Barrot 8041a02 receive-issue workaround");
2272
2273 pm_runtime_forbid(&data->udev->dev);
2274
2275 device_set_wakeup_capable(&data->udev->dev, false);
2276
2277 /* Re-enable autosuspend if this was requested */
2278 if (enable_autosuspend)
2279 usb_enable_autosuspend(data->udev);
2280 }
2281
2282 kfree_skb(skb);
2283
2284 return 0;
2285 }
2286
inject_cmd_complete(struct hci_dev * hdev,__u16 opcode)2287 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
2288 {
2289 struct sk_buff *skb;
2290 struct hci_event_hdr *hdr;
2291 struct hci_ev_cmd_complete *evt;
2292
2293 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
2294 if (!skb)
2295 return -ENOMEM;
2296
2297 hdr = skb_put(skb, sizeof(*hdr));
2298 hdr->evt = HCI_EV_CMD_COMPLETE;
2299 hdr->plen = sizeof(*evt) + 1;
2300
2301 evt = skb_put(skb, sizeof(*evt));
2302 evt->ncmd = 0x01;
2303 evt->opcode = cpu_to_le16(opcode);
2304
2305 skb_put_u8(skb, 0x00);
2306
2307 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2308
2309 return hci_recv_frame(hdev, skb);
2310 }
2311
btusb_recv_bulk_intel(struct btusb_data * data,void * buffer,int count)2312 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
2313 int count)
2314 {
2315 struct hci_dev *hdev = data->hdev;
2316
2317 /* When the device is in bootloader mode, then it can send
2318 * events via the bulk endpoint. These events are treated the
2319 * same way as the ones received from the interrupt endpoint.
2320 */
2321 if (btintel_test_flag(hdev, INTEL_BOOTLOADER))
2322 return btusb_recv_intr(data, buffer, count);
2323
2324 return btusb_recv_bulk(data, buffer, count);
2325 }
2326
btusb_recv_event_intel(struct hci_dev * hdev,struct sk_buff * skb)2327 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2328 {
2329 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) {
2330 struct hci_event_hdr *hdr = (void *)skb->data;
2331
2332 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2333 hdr->plen > 0) {
2334 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2335 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2336
2337 switch (skb->data[2]) {
2338 case 0x02:
2339 /* When switching to the operational firmware
2340 * the device sends a vendor specific event
2341 * indicating that the bootup completed.
2342 */
2343 btintel_bootup(hdev, ptr, len);
2344 break;
2345 case 0x06:
2346 /* When the firmware loading completes the
2347 * device sends out a vendor specific event
2348 * indicating the result of the firmware
2349 * loading.
2350 */
2351 btintel_secure_send_result(hdev, ptr, len);
2352 break;
2353 }
2354 }
2355 }
2356
2357 return hci_recv_frame(hdev, skb);
2358 }
2359
btusb_send_frame_intel(struct hci_dev * hdev,struct sk_buff * skb)2360 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2361 {
2362 struct urb *urb;
2363
2364 BT_DBG("%s", hdev->name);
2365
2366 switch (hci_skb_pkt_type(skb)) {
2367 case HCI_COMMAND_PKT:
2368 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) {
2369 struct hci_command_hdr *cmd = (void *)skb->data;
2370 __u16 opcode = le16_to_cpu(cmd->opcode);
2371
2372 /* When in bootloader mode and the command 0xfc09
2373 * is received, it needs to be send down the
2374 * bulk endpoint. So allocate a bulk URB instead.
2375 */
2376 if (opcode == 0xfc09)
2377 urb = alloc_bulk_urb(hdev, skb);
2378 else
2379 urb = alloc_ctrl_urb(hdev, skb);
2380
2381 /* When the 0xfc01 command is issued to boot into
2382 * the operational firmware, it will actually not
2383 * send a command complete event. To keep the flow
2384 * control working inject that event here.
2385 */
2386 if (opcode == 0xfc01)
2387 inject_cmd_complete(hdev, opcode);
2388 } else {
2389 urb = alloc_ctrl_urb(hdev, skb);
2390 }
2391 if (IS_ERR(urb))
2392 return PTR_ERR(urb);
2393
2394 hdev->stat.cmd_tx++;
2395 return submit_or_queue_tx_urb(hdev, urb);
2396
2397 case HCI_ACLDATA_PKT:
2398 urb = alloc_bulk_urb(hdev, skb);
2399 if (IS_ERR(urb))
2400 return PTR_ERR(urb);
2401
2402 hdev->stat.acl_tx++;
2403 return submit_or_queue_tx_urb(hdev, urb);
2404
2405 case HCI_SCODATA_PKT:
2406 if (hci_conn_num(hdev, SCO_LINK) < 1)
2407 return -ENODEV;
2408
2409 urb = alloc_isoc_urb(hdev, skb);
2410 if (IS_ERR(urb))
2411 return PTR_ERR(urb);
2412
2413 hdev->stat.sco_tx++;
2414 return submit_tx_urb(hdev, urb);
2415
2416 case HCI_ISODATA_PKT:
2417 urb = alloc_bulk_urb(hdev, skb);
2418 if (IS_ERR(urb))
2419 return PTR_ERR(urb);
2420
2421 return submit_or_queue_tx_urb(hdev, urb);
2422 }
2423
2424 return -EILSEQ;
2425 }
2426
2427 /* UHW CR mapping */
2428 #define MTK_BT_MISC 0x70002510
2429 #define MTK_BT_SUBSYS_RST 0x70002610
2430 #define MTK_UDMA_INT_STA_BT 0x74000024
2431 #define MTK_UDMA_INT_STA_BT1 0x74000308
2432 #define MTK_BT_WDT_STATUS 0x740003A0
2433 #define MTK_EP_RST_OPT 0x74011890
2434 #define MTK_EP_RST_IN_OUT_OPT 0x00010001
2435 #define MTK_BT_RST_DONE 0x00000100
2436 #define MTK_BT_RESET_WAIT_MS 100
2437 #define MTK_BT_RESET_NUM_TRIES 10
2438
btusb_mtk_wmt_recv(struct urb * urb)2439 static void btusb_mtk_wmt_recv(struct urb *urb)
2440 {
2441 struct hci_dev *hdev = urb->context;
2442 struct btusb_data *data = hci_get_drvdata(hdev);
2443 struct sk_buff *skb;
2444 int err;
2445
2446 if (urb->status == 0 && urb->actual_length > 0) {
2447 hdev->stat.byte_rx += urb->actual_length;
2448
2449 /* WMT event shouldn't be fragmented and the size should be
2450 * less than HCI_WMT_MAX_EVENT_SIZE.
2451 */
2452 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
2453 if (!skb) {
2454 hdev->stat.err_rx++;
2455 kfree(urb->setup_packet);
2456 return;
2457 }
2458
2459 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2460 skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
2461
2462 /* When someone waits for the WMT event, the skb is being cloned
2463 * and being processed the events from there then.
2464 */
2465 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
2466 data->evt_skb = skb_clone(skb, GFP_ATOMIC);
2467 if (!data->evt_skb) {
2468 kfree_skb(skb);
2469 kfree(urb->setup_packet);
2470 return;
2471 }
2472 }
2473
2474 err = hci_recv_frame(hdev, skb);
2475 if (err < 0) {
2476 kfree_skb(data->evt_skb);
2477 data->evt_skb = NULL;
2478 kfree(urb->setup_packet);
2479 return;
2480 }
2481
2482 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
2483 &data->flags)) {
2484 /* Barrier to sync with other CPUs */
2485 smp_mb__after_atomic();
2486 wake_up_bit(&data->flags,
2487 BTUSB_TX_WAIT_VND_EVT);
2488 }
2489 kfree(urb->setup_packet);
2490 return;
2491 } else if (urb->status == -ENOENT) {
2492 /* Avoid suspend failed when usb_kill_urb */
2493 return;
2494 }
2495
2496 usb_mark_last_busy(data->udev);
2497
2498 /* The URB complete handler is still called with urb->actual_length = 0
2499 * when the event is not available, so we should keep re-submitting
2500 * URB until WMT event returns, Also, It's necessary to wait some time
2501 * between the two consecutive control URBs to relax the target device
2502 * to generate the event. Otherwise, the WMT event cannot return from
2503 * the device successfully.
2504 */
2505 udelay(500);
2506
2507 usb_anchor_urb(urb, &data->ctrl_anchor);
2508 err = usb_submit_urb(urb, GFP_ATOMIC);
2509 if (err < 0) {
2510 kfree(urb->setup_packet);
2511 /* -EPERM: urb is being killed;
2512 * -ENODEV: device got disconnected
2513 */
2514 if (err != -EPERM && err != -ENODEV)
2515 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
2516 urb, -err);
2517 usb_unanchor_urb(urb);
2518 }
2519 }
2520
btusb_mtk_submit_wmt_recv_urb(struct hci_dev * hdev)2521 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
2522 {
2523 struct btusb_data *data = hci_get_drvdata(hdev);
2524 struct usb_ctrlrequest *dr;
2525 unsigned char *buf;
2526 int err, size = 64;
2527 unsigned int pipe;
2528 struct urb *urb;
2529
2530 urb = usb_alloc_urb(0, GFP_KERNEL);
2531 if (!urb)
2532 return -ENOMEM;
2533
2534 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
2535 if (!dr) {
2536 usb_free_urb(urb);
2537 return -ENOMEM;
2538 }
2539
2540 dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
2541 dr->bRequest = 1;
2542 dr->wIndex = cpu_to_le16(0);
2543 dr->wValue = cpu_to_le16(48);
2544 dr->wLength = cpu_to_le16(size);
2545
2546 buf = kmalloc(size, GFP_KERNEL);
2547 if (!buf) {
2548 kfree(dr);
2549 usb_free_urb(urb);
2550 return -ENOMEM;
2551 }
2552
2553 pipe = usb_rcvctrlpipe(data->udev, 0);
2554
2555 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
2556 buf, size, btusb_mtk_wmt_recv, hdev);
2557
2558 urb->transfer_flags |= URB_FREE_BUFFER;
2559
2560 usb_anchor_urb(urb, &data->ctrl_anchor);
2561 err = usb_submit_urb(urb, GFP_KERNEL);
2562 if (err < 0) {
2563 if (err != -EPERM && err != -ENODEV)
2564 bt_dev_err(hdev, "urb %p submission failed (%d)",
2565 urb, -err);
2566 usb_unanchor_urb(urb);
2567 }
2568
2569 usb_free_urb(urb);
2570
2571 return err;
2572 }
2573
btusb_mtk_hci_wmt_sync(struct hci_dev * hdev,struct btmtk_hci_wmt_params * wmt_params)2574 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
2575 struct btmtk_hci_wmt_params *wmt_params)
2576 {
2577 struct btusb_data *data = hci_get_drvdata(hdev);
2578 struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
2579 u32 hlen, status = BTMTK_WMT_INVALID;
2580 struct btmtk_hci_wmt_evt *wmt_evt;
2581 struct btmtk_hci_wmt_cmd *wc;
2582 struct btmtk_wmt_hdr *hdr;
2583 int err;
2584
2585 /* Send the WMT command and wait until the WMT event returns */
2586 hlen = sizeof(*hdr) + wmt_params->dlen;
2587 if (hlen > 255)
2588 return -EINVAL;
2589
2590 wc = kzalloc(hlen, GFP_KERNEL);
2591 if (!wc)
2592 return -ENOMEM;
2593
2594 hdr = &wc->hdr;
2595 hdr->dir = 1;
2596 hdr->op = wmt_params->op;
2597 hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
2598 hdr->flag = wmt_params->flag;
2599 memcpy(wc->data, wmt_params->data, wmt_params->dlen);
2600
2601 set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2602
2603 /* WMT cmd/event doesn't follow up the generic HCI cmd/event handling,
2604 * it needs constantly polling control pipe until the host received the
2605 * WMT event, thus, we should require to specifically acquire PM counter
2606 * on the USB to prevent the interface from entering auto suspended
2607 * while WMT cmd/event in progress.
2608 */
2609 err = usb_autopm_get_interface(data->intf);
2610 if (err < 0)
2611 goto err_free_wc;
2612
2613 err = __hci_cmd_send(hdev, 0xfc6f, hlen, wc);
2614
2615 if (err < 0) {
2616 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2617 usb_autopm_put_interface(data->intf);
2618 goto err_free_wc;
2619 }
2620
2621 /* Submit control IN URB on demand to process the WMT event */
2622 err = btusb_mtk_submit_wmt_recv_urb(hdev);
2623
2624 usb_autopm_put_interface(data->intf);
2625
2626 if (err < 0)
2627 goto err_free_wc;
2628
2629 /* The vendor specific WMT commands are all answered by a vendor
2630 * specific event and will have the Command Status or Command
2631 * Complete as with usual HCI command flow control.
2632 *
2633 * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
2634 * state to be cleared. The driver specific event receive routine
2635 * will clear that state and with that indicate completion of the
2636 * WMT command.
2637 */
2638 err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
2639 TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
2640 if (err == -EINTR) {
2641 bt_dev_err(hdev, "Execution of wmt command interrupted");
2642 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2643 goto err_free_wc;
2644 }
2645
2646 if (err) {
2647 bt_dev_err(hdev, "Execution of wmt command timed out");
2648 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2649 err = -ETIMEDOUT;
2650 goto err_free_wc;
2651 }
2652
2653 if (data->evt_skb == NULL)
2654 goto err_free_wc;
2655
2656 /* Parse and handle the return WMT event */
2657 wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
2658 if (wmt_evt->whdr.op != hdr->op) {
2659 bt_dev_err(hdev, "Wrong op received %d expected %d",
2660 wmt_evt->whdr.op, hdr->op);
2661 err = -EIO;
2662 goto err_free_skb;
2663 }
2664
2665 switch (wmt_evt->whdr.op) {
2666 case BTMTK_WMT_SEMAPHORE:
2667 if (wmt_evt->whdr.flag == 2)
2668 status = BTMTK_WMT_PATCH_UNDONE;
2669 else
2670 status = BTMTK_WMT_PATCH_DONE;
2671 break;
2672 case BTMTK_WMT_FUNC_CTRL:
2673 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
2674 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
2675 status = BTMTK_WMT_ON_DONE;
2676 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
2677 status = BTMTK_WMT_ON_PROGRESS;
2678 else
2679 status = BTMTK_WMT_ON_UNDONE;
2680 break;
2681 case BTMTK_WMT_PATCH_DWNLD:
2682 if (wmt_evt->whdr.flag == 2)
2683 status = BTMTK_WMT_PATCH_DONE;
2684 else if (wmt_evt->whdr.flag == 1)
2685 status = BTMTK_WMT_PATCH_PROGRESS;
2686 else
2687 status = BTMTK_WMT_PATCH_UNDONE;
2688 break;
2689 }
2690
2691 if (wmt_params->status)
2692 *wmt_params->status = status;
2693
2694 err_free_skb:
2695 kfree_skb(data->evt_skb);
2696 data->evt_skb = NULL;
2697 err_free_wc:
2698 kfree(wc);
2699 return err;
2700 }
2701
btusb_mtk_func_query(struct hci_dev * hdev)2702 static int btusb_mtk_func_query(struct hci_dev *hdev)
2703 {
2704 struct btmtk_hci_wmt_params wmt_params;
2705 int status, err;
2706 u8 param = 0;
2707
2708 /* Query whether the function is enabled */
2709 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2710 wmt_params.flag = 4;
2711 wmt_params.dlen = sizeof(param);
2712 wmt_params.data = ¶m;
2713 wmt_params.status = &status;
2714
2715 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2716 if (err < 0) {
2717 bt_dev_err(hdev, "Failed to query function status (%d)", err);
2718 return err;
2719 }
2720
2721 return status;
2722 }
2723
btusb_mtk_uhw_reg_write(struct btusb_data * data,u32 reg,u32 val)2724 static int btusb_mtk_uhw_reg_write(struct btusb_data *data, u32 reg, u32 val)
2725 {
2726 struct hci_dev *hdev = data->hdev;
2727 int pipe, err;
2728 void *buf;
2729
2730 buf = kzalloc(4, GFP_KERNEL);
2731 if (!buf)
2732 return -ENOMEM;
2733
2734 put_unaligned_le32(val, buf);
2735
2736 pipe = usb_sndctrlpipe(data->udev, 0);
2737 err = usb_control_msg(data->udev, pipe, 0x02,
2738 0x5E,
2739 reg >> 16, reg & 0xffff,
2740 buf, 4, USB_CTRL_SET_TIMEOUT);
2741 if (err < 0) {
2742 bt_dev_err(hdev, "Failed to write uhw reg(%d)", err);
2743 goto err_free_buf;
2744 }
2745
2746 err_free_buf:
2747 kfree(buf);
2748
2749 return err;
2750 }
2751
btusb_mtk_uhw_reg_read(struct btusb_data * data,u32 reg,u32 * val)2752 static int btusb_mtk_uhw_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2753 {
2754 struct hci_dev *hdev = data->hdev;
2755 int pipe, err;
2756 void *buf;
2757
2758 buf = kzalloc(4, GFP_KERNEL);
2759 if (!buf)
2760 return -ENOMEM;
2761
2762 pipe = usb_rcvctrlpipe(data->udev, 0);
2763 err = usb_control_msg(data->udev, pipe, 0x01,
2764 0xDE,
2765 reg >> 16, reg & 0xffff,
2766 buf, 4, USB_CTRL_SET_TIMEOUT);
2767 if (err < 0) {
2768 bt_dev_err(hdev, "Failed to read uhw reg(%d)", err);
2769 goto err_free_buf;
2770 }
2771
2772 *val = get_unaligned_le32(buf);
2773 bt_dev_dbg(hdev, "reg=%x, value=0x%08x", reg, *val);
2774
2775 err_free_buf:
2776 kfree(buf);
2777
2778 return err;
2779 }
2780
btusb_mtk_reg_read(struct btusb_data * data,u32 reg,u32 * val)2781 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2782 {
2783 int pipe, err, size = sizeof(u32);
2784 void *buf;
2785
2786 buf = kzalloc(size, GFP_KERNEL);
2787 if (!buf)
2788 return -ENOMEM;
2789
2790 pipe = usb_rcvctrlpipe(data->udev, 0);
2791 err = usb_control_msg(data->udev, pipe, 0x63,
2792 USB_TYPE_VENDOR | USB_DIR_IN,
2793 reg >> 16, reg & 0xffff,
2794 buf, size, USB_CTRL_SET_TIMEOUT);
2795 if (err < 0)
2796 goto err_free_buf;
2797
2798 *val = get_unaligned_le32(buf);
2799
2800 err_free_buf:
2801 kfree(buf);
2802
2803 return err;
2804 }
2805
btusb_mtk_id_get(struct btusb_data * data,u32 reg,u32 * id)2806 static int btusb_mtk_id_get(struct btusb_data *data, u32 reg, u32 *id)
2807 {
2808 return btusb_mtk_reg_read(data, reg, id);
2809 }
2810
btusb_mtk_setup(struct hci_dev * hdev)2811 static int btusb_mtk_setup(struct hci_dev *hdev)
2812 {
2813 struct btusb_data *data = hci_get_drvdata(hdev);
2814 struct btmtk_hci_wmt_params wmt_params;
2815 ktime_t calltime, delta, rettime;
2816 struct btmtk_tci_sleep tci_sleep;
2817 unsigned long long duration;
2818 struct sk_buff *skb;
2819 const char *fwname;
2820 int err, status;
2821 u32 dev_id;
2822 char fw_bin_name[64];
2823 u32 fw_version = 0;
2824 u8 param;
2825
2826 calltime = ktime_get();
2827
2828 err = btusb_mtk_id_get(data, 0x80000008, &dev_id);
2829 if (err < 0) {
2830 bt_dev_err(hdev, "Failed to get device id (%d)", err);
2831 return err;
2832 }
2833
2834 if (!dev_id) {
2835 err = btusb_mtk_id_get(data, 0x70010200, &dev_id);
2836 if (err < 0) {
2837 bt_dev_err(hdev, "Failed to get device id (%d)", err);
2838 return err;
2839 }
2840 err = btusb_mtk_id_get(data, 0x80021004, &fw_version);
2841 if (err < 0) {
2842 bt_dev_err(hdev, "Failed to get fw version (%d)", err);
2843 return err;
2844 }
2845 }
2846
2847 switch (dev_id) {
2848 case 0x7663:
2849 fwname = FIRMWARE_MT7663;
2850 break;
2851 case 0x7668:
2852 fwname = FIRMWARE_MT7668;
2853 break;
2854 case 0x7922:
2855 case 0x7961:
2856 snprintf(fw_bin_name, sizeof(fw_bin_name),
2857 "mediatek/BT_RAM_CODE_MT%04x_1_%x_hdr.bin",
2858 dev_id & 0xffff, (fw_version & 0xff) + 1);
2859 err = btmtk_setup_firmware_79xx(hdev, fw_bin_name,
2860 btusb_mtk_hci_wmt_sync);
2861 if (err < 0) {
2862 bt_dev_err(hdev, "Failed to set up firmware (%d)", err);
2863 return err;
2864 }
2865
2866 /* It's Device EndPoint Reset Option Register */
2867 btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT);
2868
2869 /* Enable Bluetooth protocol */
2870 param = 1;
2871 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2872 wmt_params.flag = 0;
2873 wmt_params.dlen = sizeof(param);
2874 wmt_params.data = ¶m;
2875 wmt_params.status = NULL;
2876
2877 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2878 if (err < 0) {
2879 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
2880 return err;
2881 }
2882
2883 hci_set_msft_opcode(hdev, 0xFD30);
2884 hci_set_aosp_capable(hdev);
2885 goto done;
2886 default:
2887 bt_dev_err(hdev, "Unsupported hardware variant (%08x)",
2888 dev_id);
2889 return -ENODEV;
2890 }
2891
2892 /* Query whether the firmware is already download */
2893 wmt_params.op = BTMTK_WMT_SEMAPHORE;
2894 wmt_params.flag = 1;
2895 wmt_params.dlen = 0;
2896 wmt_params.data = NULL;
2897 wmt_params.status = &status;
2898
2899 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2900 if (err < 0) {
2901 bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
2902 return err;
2903 }
2904
2905 if (status == BTMTK_WMT_PATCH_DONE) {
2906 bt_dev_info(hdev, "firmware already downloaded");
2907 goto ignore_setup_fw;
2908 }
2909
2910 /* Setup a firmware which the device definitely requires */
2911 err = btmtk_setup_firmware(hdev, fwname,
2912 btusb_mtk_hci_wmt_sync);
2913 if (err < 0)
2914 return err;
2915
2916 ignore_setup_fw:
2917 err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
2918 status < 0 || status != BTMTK_WMT_ON_PROGRESS,
2919 2000, 5000000);
2920 /* -ETIMEDOUT happens */
2921 if (err < 0)
2922 return err;
2923
2924 /* The other errors happen in btusb_mtk_func_query */
2925 if (status < 0)
2926 return status;
2927
2928 if (status == BTMTK_WMT_ON_DONE) {
2929 bt_dev_info(hdev, "function already on");
2930 goto ignore_func_on;
2931 }
2932
2933 /* Enable Bluetooth protocol */
2934 param = 1;
2935 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2936 wmt_params.flag = 0;
2937 wmt_params.dlen = sizeof(param);
2938 wmt_params.data = ¶m;
2939 wmt_params.status = NULL;
2940
2941 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2942 if (err < 0) {
2943 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
2944 return err;
2945 }
2946
2947 ignore_func_on:
2948 /* Apply the low power environment setup */
2949 tci_sleep.mode = 0x5;
2950 tci_sleep.duration = cpu_to_le16(0x640);
2951 tci_sleep.host_duration = cpu_to_le16(0x640);
2952 tci_sleep.host_wakeup_pin = 0;
2953 tci_sleep.time_compensation = 0;
2954
2955 skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
2956 HCI_INIT_TIMEOUT);
2957 if (IS_ERR(skb)) {
2958 err = PTR_ERR(skb);
2959 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
2960 return err;
2961 }
2962 kfree_skb(skb);
2963
2964 done:
2965 rettime = ktime_get();
2966 delta = ktime_sub(rettime, calltime);
2967 duration = (unsigned long long)ktime_to_ns(delta) >> 10;
2968
2969 bt_dev_info(hdev, "Device setup in %llu usecs", duration);
2970
2971 return 0;
2972 }
2973
btusb_mtk_shutdown(struct hci_dev * hdev)2974 static int btusb_mtk_shutdown(struct hci_dev *hdev)
2975 {
2976 struct btmtk_hci_wmt_params wmt_params;
2977 u8 param = 0;
2978 int err;
2979
2980 /* Disable the device */
2981 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2982 wmt_params.flag = 0;
2983 wmt_params.dlen = sizeof(param);
2984 wmt_params.data = ¶m;
2985 wmt_params.status = NULL;
2986
2987 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2988 if (err < 0) {
2989 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
2990 return err;
2991 }
2992
2993 return 0;
2994 }
2995
btusb_mtk_cmd_timeout(struct hci_dev * hdev)2996 static void btusb_mtk_cmd_timeout(struct hci_dev *hdev)
2997 {
2998 struct btusb_data *data = hci_get_drvdata(hdev);
2999 u32 val;
3000 int err, retry = 0;
3001
3002 /* It's MediaTek specific bluetooth reset mechanism via USB */
3003 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
3004 bt_dev_err(hdev, "last reset failed? Not resetting again");
3005 return;
3006 }
3007
3008 err = usb_autopm_get_interface(data->intf);
3009 if (err < 0)
3010 return;
3011
3012 btusb_stop_traffic(data);
3013 usb_kill_anchored_urbs(&data->tx_anchor);
3014
3015 /* It's Device EndPoint Reset Option Register */
3016 bt_dev_dbg(hdev, "Initiating reset mechanism via uhw");
3017 btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT);
3018 btusb_mtk_uhw_reg_read(data, MTK_BT_WDT_STATUS, &val);
3019
3020 /* Reset the bluetooth chip via USB interface. */
3021 btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 1);
3022 btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT, 0x000000FF);
3023 btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT, &val);
3024 btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT1, 0x000000FF);
3025 btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT1, &val);
3026 /* MT7921 need to delay 20ms between toggle reset bit */
3027 msleep(20);
3028 btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 0);
3029 btusb_mtk_uhw_reg_read(data, MTK_BT_SUBSYS_RST, &val);
3030
3031 /* Poll the register until reset is completed */
3032 do {
3033 btusb_mtk_uhw_reg_read(data, MTK_BT_MISC, &val);
3034 if (val & MTK_BT_RST_DONE) {
3035 bt_dev_dbg(hdev, "Bluetooth Reset Successfully");
3036 break;
3037 }
3038
3039 bt_dev_dbg(hdev, "Polling Bluetooth Reset CR");
3040 retry++;
3041 msleep(MTK_BT_RESET_WAIT_MS);
3042 } while (retry < MTK_BT_RESET_NUM_TRIES);
3043
3044 btusb_mtk_id_get(data, 0x70010200, &val);
3045 if (!val)
3046 bt_dev_err(hdev, "Can't get device id, subsys reset fail.");
3047
3048 usb_queue_reset_device(data->intf);
3049
3050 clear_bit(BTUSB_HW_RESET_ACTIVE, &data->flags);
3051 }
3052
btusb_recv_acl_mtk(struct hci_dev * hdev,struct sk_buff * skb)3053 static int btusb_recv_acl_mtk(struct hci_dev *hdev, struct sk_buff *skb)
3054 {
3055 struct btusb_data *data = hci_get_drvdata(hdev);
3056 u16 handle = le16_to_cpu(hci_acl_hdr(skb)->handle);
3057
3058 switch (handle) {
3059 case 0xfc6f: /* Firmware dump from device */
3060 /* When the firmware hangs, the device can no longer
3061 * suspend and thus disable auto-suspend.
3062 */
3063 usb_disable_autosuspend(data->udev);
3064 fallthrough;
3065 case 0x05ff: /* Firmware debug logging 1 */
3066 case 0x05fe: /* Firmware debug logging 2 */
3067 return hci_recv_diag(hdev, skb);
3068 }
3069
3070 return hci_recv_frame(hdev, skb);
3071 }
3072
3073 #ifdef CONFIG_PM
3074 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
marvell_config_oob_wake(struct hci_dev * hdev)3075 static int marvell_config_oob_wake(struct hci_dev *hdev)
3076 {
3077 struct sk_buff *skb;
3078 struct btusb_data *data = hci_get_drvdata(hdev);
3079 struct device *dev = &data->udev->dev;
3080 u16 pin, gap, opcode;
3081 int ret;
3082 u8 cmd[5];
3083
3084 /* Move on if no wakeup pin specified */
3085 if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
3086 of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
3087 return 0;
3088
3089 /* Vendor specific command to configure a GPIO as wake-up pin */
3090 opcode = hci_opcode_pack(0x3F, 0x59);
3091 cmd[0] = opcode & 0xFF;
3092 cmd[1] = opcode >> 8;
3093 cmd[2] = 2; /* length of parameters that follow */
3094 cmd[3] = pin;
3095 cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
3096
3097 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
3098 if (!skb) {
3099 bt_dev_err(hdev, "%s: No memory", __func__);
3100 return -ENOMEM;
3101 }
3102
3103 skb_put_data(skb, cmd, sizeof(cmd));
3104 hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
3105
3106 ret = btusb_send_frame(hdev, skb);
3107 if (ret) {
3108 bt_dev_err(hdev, "%s: configuration failed", __func__);
3109 kfree_skb(skb);
3110 return ret;
3111 }
3112
3113 return 0;
3114 }
3115 #endif
3116
btusb_set_bdaddr_marvell(struct hci_dev * hdev,const bdaddr_t * bdaddr)3117 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
3118 const bdaddr_t *bdaddr)
3119 {
3120 struct sk_buff *skb;
3121 u8 buf[8];
3122 long ret;
3123
3124 buf[0] = 0xfe;
3125 buf[1] = sizeof(bdaddr_t);
3126 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
3127
3128 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3129 if (IS_ERR(skb)) {
3130 ret = PTR_ERR(skb);
3131 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
3132 ret);
3133 return ret;
3134 }
3135 kfree_skb(skb);
3136
3137 return 0;
3138 }
3139
btusb_set_bdaddr_ath3012(struct hci_dev * hdev,const bdaddr_t * bdaddr)3140 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3141 const bdaddr_t *bdaddr)
3142 {
3143 struct sk_buff *skb;
3144 u8 buf[10];
3145 long ret;
3146
3147 buf[0] = 0x01;
3148 buf[1] = 0x01;
3149 buf[2] = 0x00;
3150 buf[3] = sizeof(bdaddr_t);
3151 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3152
3153 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3154 if (IS_ERR(skb)) {
3155 ret = PTR_ERR(skb);
3156 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3157 return ret;
3158 }
3159 kfree_skb(skb);
3160
3161 return 0;
3162 }
3163
btusb_set_bdaddr_wcn6855(struct hci_dev * hdev,const bdaddr_t * bdaddr)3164 static int btusb_set_bdaddr_wcn6855(struct hci_dev *hdev,
3165 const bdaddr_t *bdaddr)
3166 {
3167 struct sk_buff *skb;
3168 u8 buf[6];
3169 long ret;
3170
3171 memcpy(buf, bdaddr, sizeof(bdaddr_t));
3172
3173 skb = __hci_cmd_sync_ev(hdev, 0xfc14, sizeof(buf), buf,
3174 HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
3175 if (IS_ERR(skb)) {
3176 ret = PTR_ERR(skb);
3177 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3178 return ret;
3179 }
3180 kfree_skb(skb);
3181
3182 return 0;
3183 }
3184
3185 #define QCA_DFU_PACKET_LEN 4096
3186
3187 #define QCA_GET_TARGET_VERSION 0x09
3188 #define QCA_CHECK_STATUS 0x05
3189 #define QCA_DFU_DOWNLOAD 0x01
3190
3191 #define QCA_SYSCFG_UPDATED 0x40
3192 #define QCA_PATCH_UPDATED 0x80
3193 #define QCA_DFU_TIMEOUT 3000
3194 #define QCA_FLAG_MULTI_NVM 0x80
3195 #define QCA_BT_RESET_WAIT_MS 100
3196
3197 #define WCN6855_2_0_RAM_VERSION_GF 0x400c1200
3198 #define WCN6855_2_1_RAM_VERSION_GF 0x400c1211
3199
3200 struct qca_version {
3201 __le32 rom_version;
3202 __le32 patch_version;
3203 __le32 ram_version;
3204 __u8 chip_id;
3205 __u8 platform_id;
3206 __le16 flag;
3207 __u8 reserved[4];
3208 } __packed;
3209
3210 struct qca_rampatch_version {
3211 __le16 rom_version_high;
3212 __le16 rom_version_low;
3213 __le16 patch_version;
3214 } __packed;
3215
3216 struct qca_device_info {
3217 u32 rom_version;
3218 u8 rampatch_hdr; /* length of header in rampatch */
3219 u8 nvm_hdr; /* length of header in NVM */
3220 u8 ver_offset; /* offset of version structure in rampatch */
3221 };
3222
3223 static const struct qca_device_info qca_devices_table[] = {
3224 { 0x00000100, 20, 4, 8 }, /* Rome 1.0 */
3225 { 0x00000101, 20, 4, 8 }, /* Rome 1.1 */
3226 { 0x00000200, 28, 4, 16 }, /* Rome 2.0 */
3227 { 0x00000201, 28, 4, 16 }, /* Rome 2.1 */
3228 { 0x00000300, 28, 4, 16 }, /* Rome 3.0 */
3229 { 0x00000302, 28, 4, 16 }, /* Rome 3.2 */
3230 { 0x00130100, 40, 4, 16 }, /* WCN6855 1.0 */
3231 { 0x00130200, 40, 4, 16 }, /* WCN6855 2.0 */
3232 { 0x00130201, 40, 4, 16 }, /* WCN6855 2.1 */
3233 { 0x00190200, 40, 4, 16 }, /* WCN785x 2.0 */
3234 };
3235
btusb_qca_send_vendor_req(struct usb_device * udev,u8 request,void * data,u16 size)3236 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
3237 void *data, u16 size)
3238 {
3239 int pipe, err;
3240 u8 *buf;
3241
3242 buf = kmalloc(size, GFP_KERNEL);
3243 if (!buf)
3244 return -ENOMEM;
3245
3246 /* Found some of USB hosts have IOT issues with ours so that we should
3247 * not wait until HCI layer is ready.
3248 */
3249 pipe = usb_rcvctrlpipe(udev, 0);
3250 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
3251 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3252 if (err < 0) {
3253 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
3254 goto done;
3255 }
3256
3257 memcpy(data, buf, size);
3258
3259 done:
3260 kfree(buf);
3261
3262 return err;
3263 }
3264
btusb_setup_qca_download_fw(struct hci_dev * hdev,const struct firmware * firmware,size_t hdr_size)3265 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
3266 const struct firmware *firmware,
3267 size_t hdr_size)
3268 {
3269 struct btusb_data *btdata = hci_get_drvdata(hdev);
3270 struct usb_device *udev = btdata->udev;
3271 size_t count, size, sent = 0;
3272 int pipe, len, err;
3273 u8 *buf;
3274
3275 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
3276 if (!buf)
3277 return -ENOMEM;
3278
3279 count = firmware->size;
3280
3281 size = min_t(size_t, count, hdr_size);
3282 memcpy(buf, firmware->data, size);
3283
3284 /* USB patches should go down to controller through USB path
3285 * because binary format fits to go down through USB channel.
3286 * USB control path is for patching headers and USB bulk is for
3287 * patch body.
3288 */
3289 pipe = usb_sndctrlpipe(udev, 0);
3290 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
3291 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3292 if (err < 0) {
3293 bt_dev_err(hdev, "Failed to send headers (%d)", err);
3294 goto done;
3295 }
3296
3297 sent += size;
3298 count -= size;
3299
3300 /* ep2 need time to switch from function acl to function dfu,
3301 * so we add 20ms delay here.
3302 */
3303 msleep(20);
3304
3305 while (count) {
3306 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
3307
3308 memcpy(buf, firmware->data + sent, size);
3309
3310 pipe = usb_sndbulkpipe(udev, 0x02);
3311 err = usb_bulk_msg(udev, pipe, buf, size, &len,
3312 QCA_DFU_TIMEOUT);
3313 if (err < 0) {
3314 bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
3315 sent, firmware->size, err);
3316 break;
3317 }
3318
3319 if (size != len) {
3320 bt_dev_err(hdev, "Failed to get bulk buffer");
3321 err = -EILSEQ;
3322 break;
3323 }
3324
3325 sent += size;
3326 count -= size;
3327 }
3328
3329 done:
3330 kfree(buf);
3331 return err;
3332 }
3333
btusb_setup_qca_load_rampatch(struct hci_dev * hdev,struct qca_version * ver,const struct qca_device_info * info)3334 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
3335 struct qca_version *ver,
3336 const struct qca_device_info *info)
3337 {
3338 struct qca_rampatch_version *rver;
3339 const struct firmware *fw;
3340 u32 ver_rom, ver_patch, rver_rom;
3341 u16 rver_rom_low, rver_rom_high, rver_patch;
3342 char fwname[64];
3343 int err;
3344
3345 ver_rom = le32_to_cpu(ver->rom_version);
3346 ver_patch = le32_to_cpu(ver->patch_version);
3347
3348 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
3349
3350 err = request_firmware(&fw, fwname, &hdev->dev);
3351 if (err) {
3352 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
3353 fwname, err);
3354 return err;
3355 }
3356
3357 bt_dev_info(hdev, "using rampatch file: %s", fwname);
3358
3359 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
3360 rver_rom_low = le16_to_cpu(rver->rom_version_low);
3361 rver_patch = le16_to_cpu(rver->patch_version);
3362
3363 if (ver_rom & ~0xffffU) {
3364 rver_rom_high = le16_to_cpu(rver->rom_version_high);
3365 rver_rom = le32_to_cpu(rver_rom_high << 16 | rver_rom_low);
3366 } else {
3367 rver_rom = rver_rom_low;
3368 }
3369
3370 bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
3371 "firmware rome 0x%x build 0x%x",
3372 rver_rom, rver_patch, ver_rom, ver_patch);
3373
3374 if (rver_rom != ver_rom || rver_patch <= ver_patch) {
3375 bt_dev_err(hdev, "rampatch file version did not match with firmware");
3376 err = -EINVAL;
3377 goto done;
3378 }
3379
3380 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
3381
3382 done:
3383 release_firmware(fw);
3384
3385 return err;
3386 }
3387
btusb_generate_qca_nvm_name(char * fwname,size_t max_size,const struct qca_version * ver)3388 static void btusb_generate_qca_nvm_name(char *fwname, size_t max_size,
3389 const struct qca_version *ver)
3390 {
3391 u32 rom_version = le32_to_cpu(ver->rom_version);
3392 u16 flag = le16_to_cpu(ver->flag);
3393
3394 if (((flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) {
3395 /* The board_id should be split into two bytes
3396 * The 1st byte is chip ID, and the 2nd byte is platform ID
3397 * For example, board ID 0x010A, 0x01 is platform ID. 0x0A is chip ID
3398 * we have several platforms, and platform IDs are continuously added
3399 * Platform ID:
3400 * 0x00 is for Mobile
3401 * 0x01 is for X86
3402 * 0x02 is for Automotive
3403 * 0x03 is for Consumer electronic
3404 */
3405 u16 board_id = (ver->chip_id << 8) + ver->platform_id;
3406 const char *variant;
3407
3408 switch (le32_to_cpu(ver->ram_version)) {
3409 case WCN6855_2_0_RAM_VERSION_GF:
3410 case WCN6855_2_1_RAM_VERSION_GF:
3411 variant = "_gf";
3412 break;
3413 default:
3414 variant = "";
3415 break;
3416 }
3417
3418 if (board_id == 0) {
3419 snprintf(fwname, max_size, "qca/nvm_usb_%08x%s.bin",
3420 rom_version, variant);
3421 } else {
3422 snprintf(fwname, max_size, "qca/nvm_usb_%08x%s_%04x.bin",
3423 rom_version, variant, board_id);
3424 }
3425 } else {
3426 snprintf(fwname, max_size, "qca/nvm_usb_%08x.bin",
3427 rom_version);
3428 }
3429
3430 }
3431
btusb_setup_qca_load_nvm(struct hci_dev * hdev,struct qca_version * ver,const struct qca_device_info * info)3432 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
3433 struct qca_version *ver,
3434 const struct qca_device_info *info)
3435 {
3436 const struct firmware *fw;
3437 char fwname[64];
3438 int err;
3439
3440 btusb_generate_qca_nvm_name(fwname, sizeof(fwname), ver);
3441
3442 err = request_firmware(&fw, fwname, &hdev->dev);
3443 if (err) {
3444 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
3445 fwname, err);
3446 return err;
3447 }
3448
3449 bt_dev_info(hdev, "using NVM file: %s", fwname);
3450
3451 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
3452
3453 release_firmware(fw);
3454
3455 return err;
3456 }
3457
3458 /* identify the ROM version and check whether patches are needed */
btusb_qca_need_patch(struct usb_device * udev)3459 static bool btusb_qca_need_patch(struct usb_device *udev)
3460 {
3461 struct qca_version ver;
3462
3463 if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3464 sizeof(ver)) < 0)
3465 return false;
3466 /* only low ROM versions need patches */
3467 return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
3468 }
3469
btusb_setup_qca(struct hci_dev * hdev)3470 static int btusb_setup_qca(struct hci_dev *hdev)
3471 {
3472 struct btusb_data *btdata = hci_get_drvdata(hdev);
3473 struct usb_device *udev = btdata->udev;
3474 const struct qca_device_info *info = NULL;
3475 struct qca_version ver;
3476 u32 ver_rom;
3477 u8 status;
3478 int i, err;
3479
3480 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3481 sizeof(ver));
3482 if (err < 0)
3483 return err;
3484
3485 ver_rom = le32_to_cpu(ver.rom_version);
3486
3487 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
3488 if (ver_rom == qca_devices_table[i].rom_version)
3489 info = &qca_devices_table[i];
3490 }
3491 if (!info) {
3492 /* If the rom_version is not matched in the qca_devices_table
3493 * and the high ROM version is not zero, we assume this chip no
3494 * need to load the rampatch and nvm.
3495 */
3496 if (ver_rom & ~0xffffU)
3497 return 0;
3498
3499 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
3500 return -ENODEV;
3501 }
3502
3503 err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
3504 sizeof(status));
3505 if (err < 0)
3506 return err;
3507
3508 if (!(status & QCA_PATCH_UPDATED)) {
3509 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3510 if (err < 0)
3511 return err;
3512 }
3513
3514 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3515 sizeof(ver));
3516 if (err < 0)
3517 return err;
3518
3519 if (!(status & QCA_SYSCFG_UPDATED)) {
3520 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3521 if (err < 0)
3522 return err;
3523
3524 /* WCN6855 2.1 and later will reset to apply firmware downloaded here, so
3525 * wait ~100ms for reset Done then go ahead, otherwise, it maybe
3526 * cause potential enable failure.
3527 */
3528 if (info->rom_version >= 0x00130201)
3529 msleep(QCA_BT_RESET_WAIT_MS);
3530 }
3531
3532 /* Mark HCI_OP_ENHANCED_SETUP_SYNC_CONN as broken as it doesn't seem to
3533 * work with the likes of HSP/HFP mSBC.
3534 */
3535 set_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &hdev->quirks);
3536
3537 return 0;
3538 }
3539
__set_diag_interface(struct hci_dev * hdev)3540 static inline int __set_diag_interface(struct hci_dev *hdev)
3541 {
3542 struct btusb_data *data = hci_get_drvdata(hdev);
3543 struct usb_interface *intf = data->diag;
3544 int i;
3545
3546 if (!data->diag)
3547 return -ENODEV;
3548
3549 data->diag_tx_ep = NULL;
3550 data->diag_rx_ep = NULL;
3551
3552 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3553 struct usb_endpoint_descriptor *ep_desc;
3554
3555 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3556
3557 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3558 data->diag_tx_ep = ep_desc;
3559 continue;
3560 }
3561
3562 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3563 data->diag_rx_ep = ep_desc;
3564 continue;
3565 }
3566 }
3567
3568 if (!data->diag_tx_ep || !data->diag_rx_ep) {
3569 bt_dev_err(hdev, "invalid diagnostic descriptors");
3570 return -ENODEV;
3571 }
3572
3573 return 0;
3574 }
3575
alloc_diag_urb(struct hci_dev * hdev,bool enable)3576 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
3577 {
3578 struct btusb_data *data = hci_get_drvdata(hdev);
3579 struct sk_buff *skb;
3580 struct urb *urb;
3581 unsigned int pipe;
3582
3583 if (!data->diag_tx_ep)
3584 return ERR_PTR(-ENODEV);
3585
3586 urb = usb_alloc_urb(0, GFP_KERNEL);
3587 if (!urb)
3588 return ERR_PTR(-ENOMEM);
3589
3590 skb = bt_skb_alloc(2, GFP_KERNEL);
3591 if (!skb) {
3592 usb_free_urb(urb);
3593 return ERR_PTR(-ENOMEM);
3594 }
3595
3596 skb_put_u8(skb, 0xf0);
3597 skb_put_u8(skb, enable);
3598
3599 pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
3600
3601 usb_fill_bulk_urb(urb, data->udev, pipe,
3602 skb->data, skb->len, btusb_tx_complete, skb);
3603
3604 skb->dev = (void *)hdev;
3605
3606 return urb;
3607 }
3608
btusb_bcm_set_diag(struct hci_dev * hdev,bool enable)3609 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
3610 {
3611 struct btusb_data *data = hci_get_drvdata(hdev);
3612 struct urb *urb;
3613
3614 if (!data->diag)
3615 return -ENODEV;
3616
3617 if (!test_bit(HCI_RUNNING, &hdev->flags))
3618 return -ENETDOWN;
3619
3620 urb = alloc_diag_urb(hdev, enable);
3621 if (IS_ERR(urb))
3622 return PTR_ERR(urb);
3623
3624 return submit_or_queue_tx_urb(hdev, urb);
3625 }
3626
3627 #ifdef CONFIG_PM
btusb_oob_wake_handler(int irq,void * priv)3628 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
3629 {
3630 struct btusb_data *data = priv;
3631
3632 pm_wakeup_event(&data->udev->dev, 0);
3633 pm_system_wakeup();
3634
3635 /* Disable only if not already disabled (keep it balanced) */
3636 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3637 disable_irq_nosync(irq);
3638 disable_irq_wake(irq);
3639 }
3640 return IRQ_HANDLED;
3641 }
3642
3643 static const struct of_device_id btusb_match_table[] = {
3644 { .compatible = "usb1286,204e" },
3645 { .compatible = "usbcf3,e300" }, /* QCA6174A */
3646 { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
3647 { }
3648 };
3649 MODULE_DEVICE_TABLE(of, btusb_match_table);
3650
3651 /* Use an oob wakeup pin? */
btusb_config_oob_wake(struct hci_dev * hdev)3652 static int btusb_config_oob_wake(struct hci_dev *hdev)
3653 {
3654 struct btusb_data *data = hci_get_drvdata(hdev);
3655 struct device *dev = &data->udev->dev;
3656 int irq, ret;
3657
3658 clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3659
3660 if (!of_match_device(btusb_match_table, dev))
3661 return 0;
3662
3663 /* Move on if no IRQ specified */
3664 irq = of_irq_get_byname(dev->of_node, "wakeup");
3665 if (irq <= 0) {
3666 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
3667 return 0;
3668 }
3669
3670 irq_set_status_flags(irq, IRQ_NOAUTOEN);
3671 ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
3672 0, "OOB Wake-on-BT", data);
3673 if (ret) {
3674 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
3675 return ret;
3676 }
3677
3678 ret = device_init_wakeup(dev, true);
3679 if (ret) {
3680 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
3681 return ret;
3682 }
3683
3684 data->oob_wake_irq = irq;
3685 bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
3686 return 0;
3687 }
3688 #endif
3689
btusb_check_needs_reset_resume(struct usb_interface * intf)3690 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
3691 {
3692 if (dmi_check_system(btusb_needs_reset_resume_table))
3693 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3694 }
3695
btusb_wakeup(struct hci_dev * hdev)3696 static bool btusb_wakeup(struct hci_dev *hdev)
3697 {
3698 struct btusb_data *data = hci_get_drvdata(hdev);
3699
3700 return device_may_wakeup(&data->udev->dev);
3701 }
3702
btusb_shutdown_qca(struct hci_dev * hdev)3703 static int btusb_shutdown_qca(struct hci_dev *hdev)
3704 {
3705 struct sk_buff *skb;
3706
3707 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
3708 if (IS_ERR(skb)) {
3709 bt_dev_err(hdev, "HCI reset during shutdown failed");
3710 return PTR_ERR(skb);
3711 }
3712 kfree_skb(skb);
3713
3714 return 0;
3715 }
3716
force_poll_sync_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)3717 static ssize_t force_poll_sync_read(struct file *file, char __user *user_buf,
3718 size_t count, loff_t *ppos)
3719 {
3720 struct btusb_data *data = file->private_data;
3721 char buf[3];
3722
3723 buf[0] = data->poll_sync ? 'Y' : 'N';
3724 buf[1] = '\n';
3725 buf[2] = '\0';
3726 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
3727 }
3728
force_poll_sync_write(struct file * file,const char __user * user_buf,size_t count,loff_t * ppos)3729 static ssize_t force_poll_sync_write(struct file *file,
3730 const char __user *user_buf,
3731 size_t count, loff_t *ppos)
3732 {
3733 struct btusb_data *data = file->private_data;
3734 bool enable;
3735 int err;
3736
3737 err = kstrtobool_from_user(user_buf, count, &enable);
3738 if (err)
3739 return err;
3740
3741 /* Only allow changes while the adapter is down */
3742 if (test_bit(HCI_UP, &data->hdev->flags))
3743 return -EPERM;
3744
3745 if (data->poll_sync == enable)
3746 return -EALREADY;
3747
3748 data->poll_sync = enable;
3749
3750 return count;
3751 }
3752
3753 static const struct file_operations force_poll_sync_fops = {
3754 .open = simple_open,
3755 .read = force_poll_sync_read,
3756 .write = force_poll_sync_write,
3757 .llseek = default_llseek,
3758 };
3759
btusb_probe(struct usb_interface * intf,const struct usb_device_id * id)3760 static int btusb_probe(struct usb_interface *intf,
3761 const struct usb_device_id *id)
3762 {
3763 struct usb_endpoint_descriptor *ep_desc;
3764 struct gpio_desc *reset_gpio;
3765 struct btusb_data *data;
3766 struct hci_dev *hdev;
3767 unsigned ifnum_base;
3768 int i, err, priv_size;
3769
3770 BT_DBG("intf %p id %p", intf, id);
3771
3772 /* interface numbers are hardcoded in the spec */
3773 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
3774 if (!(id->driver_info & BTUSB_IFNUM_2))
3775 return -ENODEV;
3776 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
3777 return -ENODEV;
3778 }
3779
3780 ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
3781
3782 if (!id->driver_info) {
3783 const struct usb_device_id *match;
3784
3785 match = usb_match_id(intf, blacklist_table);
3786 if (match)
3787 id = match;
3788 }
3789
3790 if (id->driver_info == BTUSB_IGNORE)
3791 return -ENODEV;
3792
3793 if (id->driver_info & BTUSB_ATH3012) {
3794 struct usb_device *udev = interface_to_usbdev(intf);
3795
3796 /* Old firmware would otherwise let ath3k driver load
3797 * patch and sysconfig files
3798 */
3799 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
3800 !btusb_qca_need_patch(udev))
3801 return -ENODEV;
3802 }
3803
3804 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
3805 if (!data)
3806 return -ENOMEM;
3807
3808 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3809 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3810
3811 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
3812 data->intr_ep = ep_desc;
3813 continue;
3814 }
3815
3816 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3817 data->bulk_tx_ep = ep_desc;
3818 continue;
3819 }
3820
3821 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3822 data->bulk_rx_ep = ep_desc;
3823 continue;
3824 }
3825 }
3826
3827 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
3828 return -ENODEV;
3829
3830 if (id->driver_info & BTUSB_AMP) {
3831 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
3832 data->cmdreq = 0x2b;
3833 } else {
3834 data->cmdreq_type = USB_TYPE_CLASS;
3835 data->cmdreq = 0x00;
3836 }
3837
3838 data->udev = interface_to_usbdev(intf);
3839 data->intf = intf;
3840
3841 INIT_WORK(&data->work, btusb_work);
3842 INIT_WORK(&data->waker, btusb_waker);
3843 INIT_DELAYED_WORK(&data->rx_work, btusb_rx_work);
3844
3845 skb_queue_head_init(&data->acl_q);
3846
3847 init_usb_anchor(&data->deferred);
3848 init_usb_anchor(&data->tx_anchor);
3849 spin_lock_init(&data->txlock);
3850
3851 init_usb_anchor(&data->intr_anchor);
3852 init_usb_anchor(&data->bulk_anchor);
3853 init_usb_anchor(&data->isoc_anchor);
3854 init_usb_anchor(&data->diag_anchor);
3855 init_usb_anchor(&data->ctrl_anchor);
3856 spin_lock_init(&data->rxlock);
3857
3858 priv_size = 0;
3859
3860 data->recv_event = hci_recv_frame;
3861 data->recv_bulk = btusb_recv_bulk;
3862
3863 if (id->driver_info & BTUSB_INTEL_COMBINED) {
3864 /* Allocate extra space for Intel device */
3865 priv_size += sizeof(struct btintel_data);
3866
3867 /* Override the rx handlers */
3868 data->recv_event = btusb_recv_event_intel;
3869 data->recv_bulk = btusb_recv_bulk_intel;
3870 }
3871
3872 data->recv_acl = hci_recv_frame;
3873
3874 hdev = hci_alloc_dev_priv(priv_size);
3875 if (!hdev)
3876 return -ENOMEM;
3877
3878 hdev->bus = HCI_USB;
3879 hci_set_drvdata(hdev, data);
3880
3881 if (id->driver_info & BTUSB_AMP)
3882 hdev->dev_type = HCI_AMP;
3883 else
3884 hdev->dev_type = HCI_PRIMARY;
3885
3886 data->hdev = hdev;
3887
3888 SET_HCIDEV_DEV(hdev, &intf->dev);
3889
3890 reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
3891 GPIOD_OUT_LOW);
3892 if (IS_ERR(reset_gpio)) {
3893 err = PTR_ERR(reset_gpio);
3894 goto out_free_dev;
3895 } else if (reset_gpio) {
3896 data->reset_gpio = reset_gpio;
3897 }
3898
3899 hdev->open = btusb_open;
3900 hdev->close = btusb_close;
3901 hdev->flush = btusb_flush;
3902 hdev->send = btusb_send_frame;
3903 hdev->notify = btusb_notify;
3904 hdev->wakeup = btusb_wakeup;
3905
3906 #ifdef CONFIG_PM
3907 err = btusb_config_oob_wake(hdev);
3908 if (err)
3909 goto out_free_dev;
3910
3911 /* Marvell devices may need a specific chip configuration */
3912 if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
3913 err = marvell_config_oob_wake(hdev);
3914 if (err)
3915 goto out_free_dev;
3916 }
3917 #endif
3918 if (id->driver_info & BTUSB_CW6622)
3919 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3920
3921 if (id->driver_info & BTUSB_BCM2045)
3922 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3923
3924 if (id->driver_info & BTUSB_BCM92035)
3925 hdev->setup = btusb_setup_bcm92035;
3926
3927 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
3928 (id->driver_info & BTUSB_BCM_PATCHRAM)) {
3929 hdev->manufacturer = 15;
3930 hdev->setup = btbcm_setup_patchram;
3931 hdev->set_diag = btusb_bcm_set_diag;
3932 hdev->set_bdaddr = btbcm_set_bdaddr;
3933
3934 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3935 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3936 }
3937
3938 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
3939 (id->driver_info & BTUSB_BCM_APPLE)) {
3940 hdev->manufacturer = 15;
3941 hdev->setup = btbcm_setup_apple;
3942 hdev->set_diag = btusb_bcm_set_diag;
3943
3944 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3945 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3946 }
3947
3948 /* Combined Intel Device setup to support multiple setup routine */
3949 if (id->driver_info & BTUSB_INTEL_COMBINED) {
3950 err = btintel_configure_setup(hdev);
3951 if (err)
3952 goto out_free_dev;
3953
3954 /* Transport specific configuration */
3955 hdev->send = btusb_send_frame_intel;
3956 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3957
3958 if (id->driver_info & BTUSB_INTEL_NO_WBS_SUPPORT)
3959 btintel_set_flag(hdev, INTEL_ROM_LEGACY_NO_WBS_SUPPORT);
3960
3961 if (id->driver_info & BTUSB_INTEL_BROKEN_INITIAL_NCMD)
3962 btintel_set_flag(hdev, INTEL_BROKEN_INITIAL_NCMD);
3963
3964 if (id->driver_info & BTUSB_INTEL_BROKEN_SHUTDOWN_LED)
3965 btintel_set_flag(hdev, INTEL_BROKEN_SHUTDOWN_LED);
3966 }
3967
3968 if (id->driver_info & BTUSB_MARVELL)
3969 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3970
3971 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) &&
3972 (id->driver_info & BTUSB_MEDIATEK)) {
3973 hdev->setup = btusb_mtk_setup;
3974 hdev->shutdown = btusb_mtk_shutdown;
3975 hdev->manufacturer = 70;
3976 hdev->cmd_timeout = btusb_mtk_cmd_timeout;
3977 hdev->set_bdaddr = btmtk_set_bdaddr;
3978 set_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &hdev->quirks);
3979 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
3980 data->recv_acl = btusb_recv_acl_mtk;
3981 }
3982
3983 if (id->driver_info & BTUSB_SWAVE) {
3984 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3985 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3986 }
3987
3988 if (id->driver_info & BTUSB_INTEL_BOOT) {
3989 hdev->manufacturer = 2;
3990 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3991 }
3992
3993 if (id->driver_info & BTUSB_ATH3012) {
3994 data->setup_on_usb = btusb_setup_qca;
3995 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3996 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3997 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3998 }
3999
4000 if (id->driver_info & BTUSB_QCA_ROME) {
4001 data->setup_on_usb = btusb_setup_qca;
4002 hdev->shutdown = btusb_shutdown_qca;
4003 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4004 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4005 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4006 btusb_check_needs_reset_resume(intf);
4007 }
4008
4009 if (id->driver_info & BTUSB_QCA_WCN6855) {
4010 data->setup_on_usb = btusb_setup_qca;
4011 hdev->shutdown = btusb_shutdown_qca;
4012 hdev->set_bdaddr = btusb_set_bdaddr_wcn6855;
4013 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4014 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4015 hci_set_msft_opcode(hdev, 0xFD70);
4016 }
4017
4018 if (id->driver_info & BTUSB_AMP) {
4019 /* AMP controllers do not support SCO packets */
4020 data->isoc = NULL;
4021 } else {
4022 /* Interface orders are hardcoded in the specification */
4023 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
4024 data->isoc_ifnum = ifnum_base + 1;
4025 }
4026
4027 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) &&
4028 (id->driver_info & BTUSB_REALTEK)) {
4029 hdev->setup = btrtl_setup_realtek;
4030 hdev->shutdown = btrtl_shutdown_realtek;
4031 hdev->cmd_timeout = btusb_rtl_cmd_timeout;
4032
4033 /* Realtek devices need to set remote wakeup on auto-suspend */
4034 set_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags);
4035 set_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags);
4036 }
4037
4038 if (id->driver_info & BTUSB_ACTIONS_SEMI) {
4039 /* Support is advertised, but not implemented */
4040 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks);
4041 set_bit(HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER, &hdev->quirks);
4042 set_bit(HCI_QUIRK_BROKEN_SET_RPA_TIMEOUT, &hdev->quirks);
4043 set_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &hdev->quirks);
4044 }
4045
4046 if (!reset)
4047 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4048
4049 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
4050 if (!disable_scofix)
4051 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
4052 }
4053
4054 if (id->driver_info & BTUSB_BROKEN_ISOC)
4055 data->isoc = NULL;
4056
4057 if (id->driver_info & BTUSB_WIDEBAND_SPEECH)
4058 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
4059
4060 if (id->driver_info & BTUSB_VALID_LE_STATES)
4061 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
4062
4063 if (id->driver_info & BTUSB_DIGIANSWER) {
4064 data->cmdreq_type = USB_TYPE_VENDOR;
4065 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4066 }
4067
4068 if (id->driver_info & BTUSB_CSR) {
4069 struct usb_device *udev = data->udev;
4070 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
4071
4072 /* Old firmware would otherwise execute USB reset */
4073 if (bcdDevice < 0x117)
4074 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4075
4076 /* This must be set first in case we disable it for fakes */
4077 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4078
4079 /* Fake CSR devices with broken commands */
4080 if (le16_to_cpu(udev->descriptor.idVendor) == 0x0a12 &&
4081 le16_to_cpu(udev->descriptor.idProduct) == 0x0001)
4082 hdev->setup = btusb_setup_csr;
4083 }
4084
4085 if (id->driver_info & BTUSB_SNIFFER) {
4086 struct usb_device *udev = data->udev;
4087
4088 /* New sniffer firmware has crippled HCI interface */
4089 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
4090 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4091 }
4092
4093 if (id->driver_info & BTUSB_INTEL_BOOT) {
4094 /* A bug in the bootloader causes that interrupt interface is
4095 * only enabled after receiving SetInterface(0, AltSetting=0).
4096 */
4097 err = usb_set_interface(data->udev, 0, 0);
4098 if (err < 0) {
4099 BT_ERR("failed to set interface 0, alt 0 %d", err);
4100 goto out_free_dev;
4101 }
4102 }
4103
4104 if (data->isoc) {
4105 err = usb_driver_claim_interface(&btusb_driver,
4106 data->isoc, data);
4107 if (err < 0)
4108 goto out_free_dev;
4109 }
4110
4111 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) {
4112 if (!usb_driver_claim_interface(&btusb_driver,
4113 data->diag, data))
4114 __set_diag_interface(hdev);
4115 else
4116 data->diag = NULL;
4117 }
4118
4119 if (enable_autosuspend)
4120 usb_enable_autosuspend(data->udev);
4121
4122 err = hci_register_dev(hdev);
4123 if (err < 0)
4124 goto out_free_dev;
4125
4126 usb_set_intfdata(intf, data);
4127
4128 debugfs_create_file("force_poll_sync", 0644, hdev->debugfs, data,
4129 &force_poll_sync_fops);
4130
4131 return 0;
4132
4133 out_free_dev:
4134 if (data->reset_gpio)
4135 gpiod_put(data->reset_gpio);
4136 hci_free_dev(hdev);
4137 return err;
4138 }
4139
btusb_disconnect(struct usb_interface * intf)4140 static void btusb_disconnect(struct usb_interface *intf)
4141 {
4142 struct btusb_data *data = usb_get_intfdata(intf);
4143 struct hci_dev *hdev;
4144
4145 BT_DBG("intf %p", intf);
4146
4147 if (!data)
4148 return;
4149
4150 hdev = data->hdev;
4151 usb_set_intfdata(data->intf, NULL);
4152
4153 if (data->isoc)
4154 usb_set_intfdata(data->isoc, NULL);
4155
4156 if (data->diag)
4157 usb_set_intfdata(data->diag, NULL);
4158
4159 hci_unregister_dev(hdev);
4160
4161 if (intf == data->intf) {
4162 if (data->isoc)
4163 usb_driver_release_interface(&btusb_driver, data->isoc);
4164 if (data->diag)
4165 usb_driver_release_interface(&btusb_driver, data->diag);
4166 } else if (intf == data->isoc) {
4167 if (data->diag)
4168 usb_driver_release_interface(&btusb_driver, data->diag);
4169 usb_driver_release_interface(&btusb_driver, data->intf);
4170 } else if (intf == data->diag) {
4171 usb_driver_release_interface(&btusb_driver, data->intf);
4172 if (data->isoc)
4173 usb_driver_release_interface(&btusb_driver, data->isoc);
4174 }
4175
4176 if (data->oob_wake_irq)
4177 device_init_wakeup(&data->udev->dev, false);
4178
4179 if (data->reset_gpio)
4180 gpiod_put(data->reset_gpio);
4181
4182 hci_free_dev(hdev);
4183 }
4184
4185 #ifdef CONFIG_PM
btusb_suspend(struct usb_interface * intf,pm_message_t message)4186 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
4187 {
4188 struct btusb_data *data = usb_get_intfdata(intf);
4189
4190 BT_DBG("intf %p", intf);
4191
4192 if (data->suspend_count++)
4193 return 0;
4194
4195 spin_lock_irq(&data->txlock);
4196 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
4197 set_bit(BTUSB_SUSPENDING, &data->flags);
4198 spin_unlock_irq(&data->txlock);
4199 } else {
4200 spin_unlock_irq(&data->txlock);
4201 data->suspend_count--;
4202 return -EBUSY;
4203 }
4204
4205 cancel_work_sync(&data->work);
4206
4207 btusb_stop_traffic(data);
4208 usb_kill_anchored_urbs(&data->tx_anchor);
4209
4210 if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
4211 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4212 enable_irq_wake(data->oob_wake_irq);
4213 enable_irq(data->oob_wake_irq);
4214 }
4215
4216 /* For global suspend, Realtek devices lose the loaded fw
4217 * in them. But for autosuspend, firmware should remain.
4218 * Actually, it depends on whether the usb host sends
4219 * set feature (enable wakeup) or not.
4220 */
4221 if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags)) {
4222 if (PMSG_IS_AUTO(message) &&
4223 device_can_wakeup(&data->udev->dev))
4224 data->udev->do_remote_wakeup = 1;
4225 else if (!PMSG_IS_AUTO(message) &&
4226 !device_may_wakeup(&data->udev->dev)) {
4227 data->udev->do_remote_wakeup = 0;
4228 data->udev->reset_resume = 1;
4229 }
4230 }
4231
4232 return 0;
4233 }
4234
play_deferred(struct btusb_data * data)4235 static void play_deferred(struct btusb_data *data)
4236 {
4237 struct urb *urb;
4238 int err;
4239
4240 while ((urb = usb_get_from_anchor(&data->deferred))) {
4241 usb_anchor_urb(urb, &data->tx_anchor);
4242
4243 err = usb_submit_urb(urb, GFP_ATOMIC);
4244 if (err < 0) {
4245 if (err != -EPERM && err != -ENODEV)
4246 BT_ERR("%s urb %p submission failed (%d)",
4247 data->hdev->name, urb, -err);
4248 kfree(urb->setup_packet);
4249 usb_unanchor_urb(urb);
4250 usb_free_urb(urb);
4251 break;
4252 }
4253
4254 data->tx_in_flight++;
4255 usb_free_urb(urb);
4256 }
4257
4258 /* Cleanup the rest deferred urbs. */
4259 while ((urb = usb_get_from_anchor(&data->deferred))) {
4260 kfree(urb->setup_packet);
4261 usb_free_urb(urb);
4262 }
4263 }
4264
btusb_resume(struct usb_interface * intf)4265 static int btusb_resume(struct usb_interface *intf)
4266 {
4267 struct btusb_data *data = usb_get_intfdata(intf);
4268 struct hci_dev *hdev = data->hdev;
4269 int err = 0;
4270
4271 BT_DBG("intf %p", intf);
4272
4273 if (--data->suspend_count)
4274 return 0;
4275
4276 /* Disable only if not already disabled (keep it balanced) */
4277 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4278 disable_irq(data->oob_wake_irq);
4279 disable_irq_wake(data->oob_wake_irq);
4280 }
4281
4282 if (!test_bit(HCI_RUNNING, &hdev->flags))
4283 goto done;
4284
4285 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4286 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4287 if (err < 0) {
4288 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
4289 goto failed;
4290 }
4291 }
4292
4293 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
4294 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
4295 if (err < 0) {
4296 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
4297 goto failed;
4298 }
4299
4300 btusb_submit_bulk_urb(hdev, GFP_NOIO);
4301 }
4302
4303 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
4304 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
4305 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
4306 else
4307 btusb_submit_isoc_urb(hdev, GFP_NOIO);
4308 }
4309
4310 spin_lock_irq(&data->txlock);
4311 play_deferred(data);
4312 clear_bit(BTUSB_SUSPENDING, &data->flags);
4313 spin_unlock_irq(&data->txlock);
4314 schedule_work(&data->work);
4315
4316 return 0;
4317
4318 failed:
4319 usb_scuttle_anchored_urbs(&data->deferred);
4320 done:
4321 spin_lock_irq(&data->txlock);
4322 clear_bit(BTUSB_SUSPENDING, &data->flags);
4323 spin_unlock_irq(&data->txlock);
4324
4325 return err;
4326 }
4327 #endif
4328
4329 static struct usb_driver btusb_driver = {
4330 .name = "btusb",
4331 .probe = btusb_probe,
4332 .disconnect = btusb_disconnect,
4333 #ifdef CONFIG_PM
4334 .suspend = btusb_suspend,
4335 .resume = btusb_resume,
4336 #endif
4337 .id_table = btusb_table,
4338 .supports_autosuspend = 1,
4339 .disable_hub_initiated_lpm = 1,
4340 };
4341
4342 module_usb_driver(btusb_driver);
4343
4344 module_param(disable_scofix, bool, 0644);
4345 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
4346
4347 module_param(force_scofix, bool, 0644);
4348 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
4349
4350 module_param(enable_autosuspend, bool, 0644);
4351 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
4352
4353 module_param(reset, bool, 0644);
4354 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
4355
4356 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
4357 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
4358 MODULE_VERSION(VERSION);
4359 MODULE_LICENSE("GPL");
4360