Loading...
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 *
4 * Generic Bluetooth USB driver
5 *
6 * Copyright (C) 2005-2008 Marcel Holtmann <marcel@holtmann.org>
7 */
8
9#include <linux/dmi.h>
10#include <linux/module.h>
11#include <linux/usb.h>
12#include <linux/usb/quirks.h>
13#include <linux/firmware.h>
14#include <linux/iopoll.h>
15#include <linux/of_device.h>
16#include <linux/of_irq.h>
17#include <linux/suspend.h>
18#include <linux/gpio/consumer.h>
19#include <linux/debugfs.h>
20#include <asm/unaligned.h>
21
22#include <net/bluetooth/bluetooth.h>
23#include <net/bluetooth/hci_core.h>
24
25#include "btintel.h"
26#include "btbcm.h"
27#include "btrtl.h"
28#include "btmtk.h"
29
30#define VERSION "0.8"
31
32static bool disable_scofix;
33static bool force_scofix;
34static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND);
35static bool enable_poll_sync = IS_ENABLED(CONFIG_BT_HCIBTUSB_POLL_SYNC);
36static bool reset = true;
37
38static struct usb_driver btusb_driver;
39
40#define BTUSB_IGNORE BIT(0)
41#define BTUSB_DIGIANSWER BIT(1)
42#define BTUSB_CSR BIT(2)
43#define BTUSB_SNIFFER BIT(3)
44#define BTUSB_BCM92035 BIT(4)
45#define BTUSB_BROKEN_ISOC BIT(5)
46#define BTUSB_WRONG_SCO_MTU BIT(6)
47#define BTUSB_ATH3012 BIT(7)
48#define BTUSB_INTEL_COMBINED BIT(8)
49#define BTUSB_INTEL_BOOT BIT(9)
50#define BTUSB_BCM_PATCHRAM BIT(10)
51#define BTUSB_MARVELL BIT(11)
52#define BTUSB_SWAVE BIT(12)
53#define BTUSB_AMP BIT(13)
54#define BTUSB_QCA_ROME BIT(14)
55#define BTUSB_BCM_APPLE BIT(15)
56#define BTUSB_REALTEK BIT(16)
57#define BTUSB_BCM2045 BIT(17)
58#define BTUSB_IFNUM_2 BIT(18)
59#define BTUSB_CW6622 BIT(19)
60#define BTUSB_MEDIATEK BIT(20)
61#define BTUSB_WIDEBAND_SPEECH BIT(21)
62#define BTUSB_VALID_LE_STATES BIT(22)
63#define BTUSB_QCA_WCN6855 BIT(23)
64#define BTUSB_INTEL_BROKEN_SHUTDOWN_LED BIT(24)
65#define BTUSB_INTEL_BROKEN_INITIAL_NCMD BIT(25)
66#define BTUSB_INTEL_NO_WBS_SUPPORT BIT(26)
67
68static const struct usb_device_id btusb_table[] = {
69 /* Generic Bluetooth USB device */
70 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
71
72 /* Generic Bluetooth AMP device */
73 { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
74
75 /* Generic Bluetooth USB interface */
76 { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
77
78 /* Apple-specific (Broadcom) devices */
79 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
80 .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
81
82 /* MediaTek MT76x0E */
83 { USB_DEVICE(0x0e8d, 0x763f) },
84
85 /* Broadcom SoftSailing reporting vendor specific */
86 { USB_DEVICE(0x0a5c, 0x21e1) },
87
88 /* Apple MacBookPro 7,1 */
89 { USB_DEVICE(0x05ac, 0x8213) },
90
91 /* Apple iMac11,1 */
92 { USB_DEVICE(0x05ac, 0x8215) },
93
94 /* Apple MacBookPro6,2 */
95 { USB_DEVICE(0x05ac, 0x8218) },
96
97 /* Apple MacBookAir3,1, MacBookAir3,2 */
98 { USB_DEVICE(0x05ac, 0x821b) },
99
100 /* Apple MacBookAir4,1 */
101 { USB_DEVICE(0x05ac, 0x821f) },
102
103 /* Apple MacBookPro8,2 */
104 { USB_DEVICE(0x05ac, 0x821a) },
105
106 /* Apple MacMini5,1 */
107 { USB_DEVICE(0x05ac, 0x8281) },
108
109 /* AVM BlueFRITZ! USB v2.0 */
110 { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
111
112 /* Bluetooth Ultraport Module from IBM */
113 { USB_DEVICE(0x04bf, 0x030a) },
114
115 /* ALPS Modules with non-standard id */
116 { USB_DEVICE(0x044e, 0x3001) },
117 { USB_DEVICE(0x044e, 0x3002) },
118
119 /* Ericsson with non-standard id */
120 { USB_DEVICE(0x0bdb, 0x1002) },
121
122 /* Canyon CN-BTU1 with HID interfaces */
123 { USB_DEVICE(0x0c10, 0x0000) },
124
125 /* Broadcom BCM20702B0 (Dynex/Insignia) */
126 { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
127
128 /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
129 { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01),
130 .driver_info = BTUSB_BCM_PATCHRAM },
131
132 /* Broadcom BCM920703 (HTC Vive) */
133 { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
134 .driver_info = BTUSB_BCM_PATCHRAM },
135
136 /* Foxconn - Hon Hai */
137 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
138 .driver_info = BTUSB_BCM_PATCHRAM },
139
140 /* Lite-On Technology - Broadcom based */
141 { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
142 .driver_info = BTUSB_BCM_PATCHRAM },
143
144 /* Broadcom devices with vendor specific id */
145 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
146 .driver_info = BTUSB_BCM_PATCHRAM },
147
148 /* ASUSTek Computer - Broadcom based */
149 { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
150 .driver_info = BTUSB_BCM_PATCHRAM },
151
152 /* Belkin F8065bf - Broadcom based */
153 { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
154 .driver_info = BTUSB_BCM_PATCHRAM },
155
156 /* IMC Networks - Broadcom based */
157 { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
158 .driver_info = BTUSB_BCM_PATCHRAM },
159
160 /* Dell Computer - Broadcom based */
161 { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
162 .driver_info = BTUSB_BCM_PATCHRAM },
163
164 /* Toshiba Corp - Broadcom based */
165 { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
166 .driver_info = BTUSB_BCM_PATCHRAM },
167
168 /* Intel Bluetooth USB Bootloader (RAM module) */
169 { USB_DEVICE(0x8087, 0x0a5a),
170 .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
171
172 { } /* Terminating entry */
173};
174
175MODULE_DEVICE_TABLE(usb, btusb_table);
176
177static const struct usb_device_id blacklist_table[] = {
178 /* CSR BlueCore devices */
179 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
180
181 /* Broadcom BCM2033 without firmware */
182 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
183
184 /* Broadcom BCM2045 devices */
185 { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
186
187 /* Atheros 3011 with sflash firmware */
188 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
189 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
190 { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
191 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
192 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
193 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
194 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
195
196 /* Atheros AR9285 Malbec with sflash firmware */
197 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
198
199 /* Atheros 3012 with sflash firmware */
200 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
201 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
202 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
203 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
204 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
205 { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
206 { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
207 { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
208 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
209 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
210 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
211 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
212 { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
213 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
214 { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
215 { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
216 { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
217 { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
218 { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
219 { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
220 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
221 { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
222 { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
223 { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
224 { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
225 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
226 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
227 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
228 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
229 { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
230 { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
231 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
232 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
233 { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
234 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
235 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
236 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
237 { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
238 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
239 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
240 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
241 { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
242 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
243 { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
244 { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
245 { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
246 { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
247 { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
248 { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
249 { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
250
251 /* Atheros AR5BBU12 with sflash firmware */
252 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
253
254 /* Atheros AR5BBU12 with sflash firmware */
255 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
256 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
257
258 /* QCA ROME chipset */
259 { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME |
260 BTUSB_WIDEBAND_SPEECH },
261 { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME |
262 BTUSB_WIDEBAND_SPEECH },
263 { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME |
264 BTUSB_WIDEBAND_SPEECH },
265 { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME |
266 BTUSB_WIDEBAND_SPEECH },
267 { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME |
268 BTUSB_WIDEBAND_SPEECH },
269 { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME |
270 BTUSB_WIDEBAND_SPEECH },
271 { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME |
272 BTUSB_WIDEBAND_SPEECH },
273 { USB_DEVICE(0x0cf3, 0xe500), .driver_info = BTUSB_QCA_ROME |
274 BTUSB_WIDEBAND_SPEECH },
275 { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME |
276 BTUSB_WIDEBAND_SPEECH },
277 { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME |
278 BTUSB_WIDEBAND_SPEECH },
279 { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME |
280 BTUSB_WIDEBAND_SPEECH },
281 { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME |
282 BTUSB_WIDEBAND_SPEECH },
283 { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME |
284 BTUSB_WIDEBAND_SPEECH },
285 { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME |
286 BTUSB_WIDEBAND_SPEECH },
287 { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME |
288 BTUSB_WIDEBAND_SPEECH },
289 { USB_DEVICE(0x04ca, 0x3021), .driver_info = BTUSB_QCA_ROME |
290 BTUSB_WIDEBAND_SPEECH },
291 { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME |
292 BTUSB_WIDEBAND_SPEECH },
293 { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME |
294 BTUSB_WIDEBAND_SPEECH },
295 { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME |
296 BTUSB_WIDEBAND_SPEECH },
297
298 /* QCA WCN6855 chipset */
299 { USB_DEVICE(0x0cf3, 0xe600), .driver_info = BTUSB_QCA_WCN6855 |
300 BTUSB_WIDEBAND_SPEECH |
301 BTUSB_VALID_LE_STATES },
302 { USB_DEVICE(0x0489, 0xe0cc), .driver_info = BTUSB_QCA_WCN6855 |
303 BTUSB_WIDEBAND_SPEECH |
304 BTUSB_VALID_LE_STATES },
305 { USB_DEVICE(0x0489, 0xe0d6), .driver_info = BTUSB_QCA_WCN6855 |
306 BTUSB_WIDEBAND_SPEECH |
307 BTUSB_VALID_LE_STATES },
308 { USB_DEVICE(0x0489, 0xe0e3), .driver_info = BTUSB_QCA_WCN6855 |
309 BTUSB_WIDEBAND_SPEECH |
310 BTUSB_VALID_LE_STATES },
311 { USB_DEVICE(0x10ab, 0x9309), .driver_info = BTUSB_QCA_WCN6855 |
312 BTUSB_WIDEBAND_SPEECH |
313 BTUSB_VALID_LE_STATES },
314 { USB_DEVICE(0x10ab, 0x9409), .driver_info = BTUSB_QCA_WCN6855 |
315 BTUSB_WIDEBAND_SPEECH |
316 BTUSB_VALID_LE_STATES },
317 { USB_DEVICE(0x0489, 0xe0d0), .driver_info = BTUSB_QCA_WCN6855 |
318 BTUSB_WIDEBAND_SPEECH |
319 BTUSB_VALID_LE_STATES },
320 { USB_DEVICE(0x10ab, 0x9108), .driver_info = BTUSB_QCA_WCN6855 |
321 BTUSB_WIDEBAND_SPEECH |
322 BTUSB_VALID_LE_STATES },
323 { USB_DEVICE(0x10ab, 0x9109), .driver_info = BTUSB_QCA_WCN6855 |
324 BTUSB_WIDEBAND_SPEECH |
325 BTUSB_VALID_LE_STATES },
326 { USB_DEVICE(0x10ab, 0x9208), .driver_info = BTUSB_QCA_WCN6855 |
327 BTUSB_WIDEBAND_SPEECH |
328 BTUSB_VALID_LE_STATES },
329 { USB_DEVICE(0x10ab, 0x9209), .driver_info = BTUSB_QCA_WCN6855 |
330 BTUSB_WIDEBAND_SPEECH |
331 BTUSB_VALID_LE_STATES },
332 { USB_DEVICE(0x10ab, 0x9308), .driver_info = BTUSB_QCA_WCN6855 |
333 BTUSB_WIDEBAND_SPEECH |
334 BTUSB_VALID_LE_STATES },
335 { USB_DEVICE(0x10ab, 0x9408), .driver_info = BTUSB_QCA_WCN6855 |
336 BTUSB_WIDEBAND_SPEECH |
337 BTUSB_VALID_LE_STATES },
338 { USB_DEVICE(0x10ab, 0x9508), .driver_info = BTUSB_QCA_WCN6855 |
339 BTUSB_WIDEBAND_SPEECH |
340 BTUSB_VALID_LE_STATES },
341 { USB_DEVICE(0x10ab, 0x9509), .driver_info = BTUSB_QCA_WCN6855 |
342 BTUSB_WIDEBAND_SPEECH |
343 BTUSB_VALID_LE_STATES },
344 { USB_DEVICE(0x10ab, 0x9608), .driver_info = BTUSB_QCA_WCN6855 |
345 BTUSB_WIDEBAND_SPEECH |
346 BTUSB_VALID_LE_STATES },
347 { USB_DEVICE(0x10ab, 0x9609), .driver_info = BTUSB_QCA_WCN6855 |
348 BTUSB_WIDEBAND_SPEECH |
349 BTUSB_VALID_LE_STATES },
350 { USB_DEVICE(0x10ab, 0x9f09), .driver_info = BTUSB_QCA_WCN6855 |
351 BTUSB_WIDEBAND_SPEECH |
352 BTUSB_VALID_LE_STATES },
353 { USB_DEVICE(0x04ca, 0x3022), .driver_info = BTUSB_QCA_WCN6855 |
354 BTUSB_WIDEBAND_SPEECH |
355 BTUSB_VALID_LE_STATES },
356 { USB_DEVICE(0x0489, 0xe0c7), .driver_info = BTUSB_QCA_WCN6855 |
357 BTUSB_WIDEBAND_SPEECH |
358 BTUSB_VALID_LE_STATES },
359 { USB_DEVICE(0x0489, 0xe0c9), .driver_info = BTUSB_QCA_WCN6855 |
360 BTUSB_WIDEBAND_SPEECH |
361 BTUSB_VALID_LE_STATES },
362 { USB_DEVICE(0x0489, 0xe0ca), .driver_info = BTUSB_QCA_WCN6855 |
363 BTUSB_WIDEBAND_SPEECH |
364 BTUSB_VALID_LE_STATES },
365 { USB_DEVICE(0x0489, 0xe0cb), .driver_info = BTUSB_QCA_WCN6855 |
366 BTUSB_WIDEBAND_SPEECH |
367 BTUSB_VALID_LE_STATES },
368 { USB_DEVICE(0x0489, 0xe0ce), .driver_info = BTUSB_QCA_WCN6855 |
369 BTUSB_WIDEBAND_SPEECH |
370 BTUSB_VALID_LE_STATES },
371 { USB_DEVICE(0x0489, 0xe0de), .driver_info = BTUSB_QCA_WCN6855 |
372 BTUSB_WIDEBAND_SPEECH |
373 BTUSB_VALID_LE_STATES },
374 { USB_DEVICE(0x0489, 0xe0df), .driver_info = BTUSB_QCA_WCN6855 |
375 BTUSB_WIDEBAND_SPEECH |
376 BTUSB_VALID_LE_STATES },
377 { USB_DEVICE(0x0489, 0xe0e1), .driver_info = BTUSB_QCA_WCN6855 |
378 BTUSB_WIDEBAND_SPEECH |
379 BTUSB_VALID_LE_STATES },
380 { USB_DEVICE(0x0489, 0xe0ea), .driver_info = BTUSB_QCA_WCN6855 |
381 BTUSB_WIDEBAND_SPEECH |
382 BTUSB_VALID_LE_STATES },
383 { USB_DEVICE(0x0489, 0xe0ec), .driver_info = BTUSB_QCA_WCN6855 |
384 BTUSB_WIDEBAND_SPEECH |
385 BTUSB_VALID_LE_STATES },
386 { USB_DEVICE(0x04ca, 0x3023), .driver_info = BTUSB_QCA_WCN6855 |
387 BTUSB_WIDEBAND_SPEECH |
388 BTUSB_VALID_LE_STATES },
389 { USB_DEVICE(0x04ca, 0x3024), .driver_info = BTUSB_QCA_WCN6855 |
390 BTUSB_WIDEBAND_SPEECH |
391 BTUSB_VALID_LE_STATES },
392 { USB_DEVICE(0x04ca, 0x3a22), .driver_info = BTUSB_QCA_WCN6855 |
393 BTUSB_WIDEBAND_SPEECH |
394 BTUSB_VALID_LE_STATES },
395 { USB_DEVICE(0x04ca, 0x3a24), .driver_info = BTUSB_QCA_WCN6855 |
396 BTUSB_WIDEBAND_SPEECH |
397 BTUSB_VALID_LE_STATES },
398 { USB_DEVICE(0x04ca, 0x3a26), .driver_info = BTUSB_QCA_WCN6855 |
399 BTUSB_WIDEBAND_SPEECH |
400 BTUSB_VALID_LE_STATES },
401 { USB_DEVICE(0x04ca, 0x3a27), .driver_info = BTUSB_QCA_WCN6855 |
402 BTUSB_WIDEBAND_SPEECH |
403 BTUSB_VALID_LE_STATES },
404
405 /* QCA WCN785x chipset */
406 { USB_DEVICE(0x0cf3, 0xe700), .driver_info = BTUSB_QCA_WCN6855 |
407 BTUSB_WIDEBAND_SPEECH |
408 BTUSB_VALID_LE_STATES },
409
410 /* Broadcom BCM2035 */
411 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
412 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
413 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
414
415 /* Broadcom BCM2045 */
416 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
417 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
418
419 /* IBM/Lenovo ThinkPad with Broadcom chip */
420 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
421 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
422
423 /* HP laptop with Broadcom chip */
424 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
425
426 /* Dell laptop with Broadcom chip */
427 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
428
429 /* Dell Wireless 370 and 410 devices */
430 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
431 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
432
433 /* Belkin F8T012 and F8T013 devices */
434 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
435 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
436
437 /* Asus WL-BTD202 device */
438 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
439
440 /* Kensington Bluetooth USB adapter */
441 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
442
443 /* RTX Telecom based adapters with buggy SCO support */
444 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
445 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
446
447 /* CONWISE Technology based adapters with buggy SCO support */
448 { USB_DEVICE(0x0e5e, 0x6622),
449 .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
450
451 /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
452 { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
453
454 /* Digianswer devices */
455 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
456 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
457
458 /* CSR BlueCore Bluetooth Sniffer */
459 { USB_DEVICE(0x0a12, 0x0002),
460 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
461
462 /* Frontline ComProbe Bluetooth Sniffer */
463 { USB_DEVICE(0x16d3, 0x0002),
464 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
465
466 /* Marvell Bluetooth devices */
467 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
468 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
469 { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
470
471 /* Intel Bluetooth devices */
472 { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_COMBINED },
473 { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_COMBINED },
474 { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_COMBINED },
475 { USB_DEVICE(0x8087, 0x0032), .driver_info = BTUSB_INTEL_COMBINED },
476 { USB_DEVICE(0x8087, 0x0033), .driver_info = BTUSB_INTEL_COMBINED },
477 { USB_DEVICE(0x8087, 0x0035), .driver_info = BTUSB_INTEL_COMBINED },
478 { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
479 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL_COMBINED |
480 BTUSB_INTEL_NO_WBS_SUPPORT |
481 BTUSB_INTEL_BROKEN_INITIAL_NCMD |
482 BTUSB_INTEL_BROKEN_SHUTDOWN_LED },
483 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL_COMBINED |
484 BTUSB_INTEL_NO_WBS_SUPPORT |
485 BTUSB_INTEL_BROKEN_SHUTDOWN_LED },
486 { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_COMBINED },
487 { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL_COMBINED |
488 BTUSB_INTEL_BROKEN_SHUTDOWN_LED },
489 { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_COMBINED },
490
491 /* Other Intel Bluetooth devices */
492 { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
493 .driver_info = BTUSB_IGNORE },
494
495 /* Realtek 8822CE Bluetooth devices */
496 { USB_DEVICE(0x0bda, 0xb00c), .driver_info = BTUSB_REALTEK |
497 BTUSB_WIDEBAND_SPEECH },
498 { USB_DEVICE(0x0bda, 0xc822), .driver_info = BTUSB_REALTEK |
499 BTUSB_WIDEBAND_SPEECH },
500
501 /* Realtek 8822CU Bluetooth devices */
502 { USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK |
503 BTUSB_WIDEBAND_SPEECH },
504
505 /* Realtek 8852AE Bluetooth devices */
506 { USB_DEVICE(0x0bda, 0x2852), .driver_info = BTUSB_REALTEK |
507 BTUSB_WIDEBAND_SPEECH },
508 { USB_DEVICE(0x0bda, 0xc852), .driver_info = BTUSB_REALTEK |
509 BTUSB_WIDEBAND_SPEECH },
510 { USB_DEVICE(0x0bda, 0x385a), .driver_info = BTUSB_REALTEK |
511 BTUSB_WIDEBAND_SPEECH },
512 { USB_DEVICE(0x0bda, 0x4852), .driver_info = BTUSB_REALTEK |
513 BTUSB_WIDEBAND_SPEECH },
514 { USB_DEVICE(0x04c5, 0x165c), .driver_info = BTUSB_REALTEK |
515 BTUSB_WIDEBAND_SPEECH },
516 { USB_DEVICE(0x04ca, 0x4006), .driver_info = BTUSB_REALTEK |
517 BTUSB_WIDEBAND_SPEECH },
518 { USB_DEVICE(0x0cb8, 0xc549), .driver_info = BTUSB_REALTEK |
519 BTUSB_WIDEBAND_SPEECH },
520
521 /* Realtek 8852CE Bluetooth devices */
522 { USB_DEVICE(0x04ca, 0x4007), .driver_info = BTUSB_REALTEK |
523 BTUSB_WIDEBAND_SPEECH },
524 { USB_DEVICE(0x04c5, 0x1675), .driver_info = BTUSB_REALTEK |
525 BTUSB_WIDEBAND_SPEECH },
526 { USB_DEVICE(0x0cb8, 0xc558), .driver_info = BTUSB_REALTEK |
527 BTUSB_WIDEBAND_SPEECH },
528 { USB_DEVICE(0x13d3, 0x3587), .driver_info = BTUSB_REALTEK |
529 BTUSB_WIDEBAND_SPEECH },
530 { USB_DEVICE(0x13d3, 0x3586), .driver_info = BTUSB_REALTEK |
531 BTUSB_WIDEBAND_SPEECH },
532 { USB_DEVICE(0x13d3, 0x3592), .driver_info = BTUSB_REALTEK |
533 BTUSB_WIDEBAND_SPEECH },
534
535 /* Realtek 8852BE Bluetooth devices */
536 { USB_DEVICE(0x0cb8, 0xc559), .driver_info = BTUSB_REALTEK |
537 BTUSB_WIDEBAND_SPEECH },
538
539 /* Realtek Bluetooth devices */
540 { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
541 .driver_info = BTUSB_REALTEK },
542
543 /* MediaTek Bluetooth devices */
544 { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01),
545 .driver_info = BTUSB_MEDIATEK |
546 BTUSB_WIDEBAND_SPEECH |
547 BTUSB_VALID_LE_STATES },
548
549 /* Additional MediaTek MT7615E Bluetooth devices */
550 { USB_DEVICE(0x13d3, 0x3560), .driver_info = BTUSB_MEDIATEK},
551
552 /* Additional MediaTek MT7663 Bluetooth devices */
553 { USB_DEVICE(0x043e, 0x310c), .driver_info = BTUSB_MEDIATEK |
554 BTUSB_WIDEBAND_SPEECH |
555 BTUSB_VALID_LE_STATES },
556
557 /* Additional MediaTek MT7668 Bluetooth devices */
558 { USB_DEVICE(0x043e, 0x3109), .driver_info = BTUSB_MEDIATEK |
559 BTUSB_WIDEBAND_SPEECH |
560 BTUSB_VALID_LE_STATES },
561
562 /* Additional MediaTek MT7921 Bluetooth devices */
563 { USB_DEVICE(0x0489, 0xe0c8), .driver_info = BTUSB_MEDIATEK |
564 BTUSB_WIDEBAND_SPEECH |
565 BTUSB_VALID_LE_STATES },
566 { USB_DEVICE(0x0489, 0xe0e0), .driver_info = BTUSB_MEDIATEK |
567 BTUSB_WIDEBAND_SPEECH |
568 BTUSB_VALID_LE_STATES },
569 { USB_DEVICE(0x04ca, 0x3802), .driver_info = BTUSB_MEDIATEK |
570 BTUSB_WIDEBAND_SPEECH |
571 BTUSB_VALID_LE_STATES },
572 { USB_DEVICE(0x13d3, 0x3563), .driver_info = BTUSB_MEDIATEK |
573 BTUSB_WIDEBAND_SPEECH |
574 BTUSB_VALID_LE_STATES },
575 { USB_DEVICE(0x13d3, 0x3564), .driver_info = BTUSB_MEDIATEK |
576 BTUSB_WIDEBAND_SPEECH |
577 BTUSB_VALID_LE_STATES },
578 { USB_DEVICE(0x13d3, 0x3567), .driver_info = BTUSB_MEDIATEK |
579 BTUSB_WIDEBAND_SPEECH |
580 BTUSB_VALID_LE_STATES },
581 { USB_DEVICE(0x13d3, 0x3578), .driver_info = BTUSB_MEDIATEK |
582 BTUSB_WIDEBAND_SPEECH |
583 BTUSB_VALID_LE_STATES },
584 { USB_DEVICE(0x13d3, 0x3583), .driver_info = BTUSB_MEDIATEK |
585 BTUSB_WIDEBAND_SPEECH |
586 BTUSB_VALID_LE_STATES },
587 { USB_DEVICE(0x0489, 0xe0cd), .driver_info = BTUSB_MEDIATEK |
588 BTUSB_WIDEBAND_SPEECH |
589 BTUSB_VALID_LE_STATES },
590 { USB_DEVICE(0x0e8d, 0x0608), .driver_info = BTUSB_MEDIATEK |
591 BTUSB_WIDEBAND_SPEECH |
592 BTUSB_VALID_LE_STATES },
593
594 /* MediaTek MT7922A Bluetooth devices */
595 { USB_DEVICE(0x0489, 0xe0d8), .driver_info = BTUSB_MEDIATEK |
596 BTUSB_WIDEBAND_SPEECH |
597 BTUSB_VALID_LE_STATES },
598 { USB_DEVICE(0x0489, 0xe0d9), .driver_info = BTUSB_MEDIATEK |
599 BTUSB_WIDEBAND_SPEECH |
600 BTUSB_VALID_LE_STATES },
601 { USB_DEVICE(0x13d3, 0x3568), .driver_info = BTUSB_MEDIATEK |
602 BTUSB_WIDEBAND_SPEECH |
603 BTUSB_VALID_LE_STATES },
604 { USB_DEVICE(0x0489, 0xe0e2), .driver_info = BTUSB_MEDIATEK |
605 BTUSB_WIDEBAND_SPEECH |
606 BTUSB_VALID_LE_STATES },
607 { USB_DEVICE(0x0489, 0xe0f2), .driver_info = BTUSB_MEDIATEK |
608 BTUSB_WIDEBAND_SPEECH |
609 BTUSB_VALID_LE_STATES },
610
611 /* Additional Realtek 8723AE Bluetooth devices */
612 { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
613 { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
614
615 /* Additional Realtek 8723BE Bluetooth devices */
616 { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
617 { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
618 { USB_DEVICE(0x04f2, 0xb49f), .driver_info = BTUSB_REALTEK },
619 { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
620 { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
621 { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
622 { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
623
624 /* Additional Realtek 8723BU Bluetooth devices */
625 { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
626
627 /* Additional Realtek 8723DE Bluetooth devices */
628 { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
629 { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
630
631 /* Additional Realtek 8761BUV Bluetooth devices */
632 { USB_DEVICE(0x2357, 0x0604), .driver_info = BTUSB_REALTEK |
633 BTUSB_WIDEBAND_SPEECH },
634 { USB_DEVICE(0x0b05, 0x190e), .driver_info = BTUSB_REALTEK |
635 BTUSB_WIDEBAND_SPEECH },
636 { USB_DEVICE(0x2550, 0x8761), .driver_info = BTUSB_REALTEK |
637 BTUSB_WIDEBAND_SPEECH },
638 { USB_DEVICE(0x0bda, 0x8771), .driver_info = BTUSB_REALTEK |
639 BTUSB_WIDEBAND_SPEECH },
640 { USB_DEVICE(0x7392, 0xc611), .driver_info = BTUSB_REALTEK |
641 BTUSB_WIDEBAND_SPEECH },
642 { USB_DEVICE(0x2b89, 0x8761), .driver_info = BTUSB_REALTEK |
643 BTUSB_WIDEBAND_SPEECH },
644
645 /* Additional Realtek 8821AE Bluetooth devices */
646 { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
647 { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
648 { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
649 { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
650 { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
651
652 /* Additional Realtek 8822BE Bluetooth devices */
653 { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
654 { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
655
656 /* Additional Realtek 8822CE Bluetooth devices */
657 { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK |
658 BTUSB_WIDEBAND_SPEECH },
659 { USB_DEVICE(0x04c5, 0x161f), .driver_info = BTUSB_REALTEK |
660 BTUSB_WIDEBAND_SPEECH },
661 { USB_DEVICE(0x0b05, 0x18ef), .driver_info = BTUSB_REALTEK |
662 BTUSB_WIDEBAND_SPEECH },
663 { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK |
664 BTUSB_WIDEBAND_SPEECH },
665 { USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK |
666 BTUSB_WIDEBAND_SPEECH },
667 { USB_DEVICE(0x13d3, 0x3553), .driver_info = BTUSB_REALTEK |
668 BTUSB_WIDEBAND_SPEECH },
669 { USB_DEVICE(0x13d3, 0x3555), .driver_info = BTUSB_REALTEK |
670 BTUSB_WIDEBAND_SPEECH },
671 { USB_DEVICE(0x2ff8, 0x3051), .driver_info = BTUSB_REALTEK |
672 BTUSB_WIDEBAND_SPEECH },
673 { USB_DEVICE(0x1358, 0xc123), .driver_info = BTUSB_REALTEK |
674 BTUSB_WIDEBAND_SPEECH },
675 { USB_DEVICE(0x0bda, 0xc123), .driver_info = BTUSB_REALTEK |
676 BTUSB_WIDEBAND_SPEECH },
677 { USB_DEVICE(0x0cb5, 0xc547), .driver_info = BTUSB_REALTEK |
678 BTUSB_WIDEBAND_SPEECH },
679
680 /* Silicon Wave based devices */
681 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
682
683 { } /* Terminating entry */
684};
685
686/* The Bluetooth USB module build into some devices needs to be reset on resume,
687 * this is a problem with the platform (likely shutting off all power) not with
688 * the module itself. So we use a DMI list to match known broken platforms.
689 */
690static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
691 {
692 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
693 .matches = {
694 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
695 DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
696 },
697 },
698 {
699 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
700 .matches = {
701 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
702 DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
703 },
704 },
705 {
706 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
707 .matches = {
708 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
709 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
710 },
711 },
712 {}
713};
714
715#define BTUSB_MAX_ISOC_FRAMES 10
716
717#define BTUSB_INTR_RUNNING 0
718#define BTUSB_BULK_RUNNING 1
719#define BTUSB_ISOC_RUNNING 2
720#define BTUSB_SUSPENDING 3
721#define BTUSB_DID_ISO_RESUME 4
722#define BTUSB_BOOTLOADER 5
723#define BTUSB_DOWNLOADING 6
724#define BTUSB_FIRMWARE_LOADED 7
725#define BTUSB_FIRMWARE_FAILED 8
726#define BTUSB_BOOTING 9
727#define BTUSB_DIAG_RUNNING 10
728#define BTUSB_OOB_WAKE_ENABLED 11
729#define BTUSB_HW_RESET_ACTIVE 12
730#define BTUSB_TX_WAIT_VND_EVT 13
731#define BTUSB_WAKEUP_AUTOSUSPEND 14
732#define BTUSB_USE_ALT3_FOR_WBS 15
733#define BTUSB_ALT6_CONTINUOUS_TX 16
734
735struct btusb_data {
736 struct hci_dev *hdev;
737 struct usb_device *udev;
738 struct usb_interface *intf;
739 struct usb_interface *isoc;
740 struct usb_interface *diag;
741 unsigned isoc_ifnum;
742
743 unsigned long flags;
744
745 bool poll_sync;
746 int intr_interval;
747 struct work_struct work;
748 struct work_struct waker;
749 struct delayed_work rx_work;
750
751 struct sk_buff_head acl_q;
752
753 struct usb_anchor deferred;
754 struct usb_anchor tx_anchor;
755 int tx_in_flight;
756 spinlock_t txlock;
757
758 struct usb_anchor intr_anchor;
759 struct usb_anchor bulk_anchor;
760 struct usb_anchor isoc_anchor;
761 struct usb_anchor diag_anchor;
762 struct usb_anchor ctrl_anchor;
763 spinlock_t rxlock;
764
765 struct sk_buff *evt_skb;
766 struct sk_buff *acl_skb;
767 struct sk_buff *sco_skb;
768
769 struct usb_endpoint_descriptor *intr_ep;
770 struct usb_endpoint_descriptor *bulk_tx_ep;
771 struct usb_endpoint_descriptor *bulk_rx_ep;
772 struct usb_endpoint_descriptor *isoc_tx_ep;
773 struct usb_endpoint_descriptor *isoc_rx_ep;
774 struct usb_endpoint_descriptor *diag_tx_ep;
775 struct usb_endpoint_descriptor *diag_rx_ep;
776
777 struct gpio_desc *reset_gpio;
778
779 __u8 cmdreq_type;
780 __u8 cmdreq;
781
782 unsigned int sco_num;
783 unsigned int air_mode;
784 bool usb_alt6_packet_flow;
785 int isoc_altsetting;
786 int suspend_count;
787
788 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
789 int (*recv_acl)(struct hci_dev *hdev, struct sk_buff *skb);
790 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
791
792 int (*setup_on_usb)(struct hci_dev *hdev);
793
794 int oob_wake_irq; /* irq for out-of-band wake-on-bt */
795 unsigned cmd_timeout_cnt;
796};
797
798static void btusb_reset(struct hci_dev *hdev)
799{
800 struct btusb_data *data;
801 int err;
802
803 if (hdev->reset) {
804 hdev->reset(hdev);
805 return;
806 }
807
808 data = hci_get_drvdata(hdev);
809 /* This is not an unbalanced PM reference since the device will reset */
810 err = usb_autopm_get_interface(data->intf);
811 if (err) {
812 bt_dev_err(hdev, "Failed usb_autopm_get_interface: %d", err);
813 return;
814 }
815
816 bt_dev_err(hdev, "Resetting usb device.");
817 usb_queue_reset_device(data->intf);
818}
819
820static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
821{
822 struct btusb_data *data = hci_get_drvdata(hdev);
823 struct gpio_desc *reset_gpio = data->reset_gpio;
824
825 if (++data->cmd_timeout_cnt < 5)
826 return;
827
828 if (!reset_gpio) {
829 btusb_reset(hdev);
830 return;
831 }
832
833 /*
834 * Toggle the hard reset line if the platform provides one. The reset
835 * is going to yank the device off the USB and then replug. So doing
836 * once is enough. The cleanup is handled correctly on the way out
837 * (standard USB disconnect), and the new device is detected cleanly
838 * and bound to the driver again like it should be.
839 */
840 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
841 bt_dev_err(hdev, "last reset failed? Not resetting again");
842 return;
843 }
844
845 bt_dev_err(hdev, "Initiating HW reset via gpio");
846 gpiod_set_value_cansleep(reset_gpio, 1);
847 msleep(100);
848 gpiod_set_value_cansleep(reset_gpio, 0);
849}
850
851static void btusb_rtl_cmd_timeout(struct hci_dev *hdev)
852{
853 struct btusb_data *data = hci_get_drvdata(hdev);
854 struct gpio_desc *reset_gpio = data->reset_gpio;
855
856 if (++data->cmd_timeout_cnt < 5)
857 return;
858
859 if (!reset_gpio) {
860 btusb_reset(hdev);
861 return;
862 }
863
864 /* Toggle the hard reset line. The Realtek device is going to
865 * yank itself off the USB and then replug. The cleanup is handled
866 * correctly on the way out (standard USB disconnect), and the new
867 * device is detected cleanly and bound to the driver again like
868 * it should be.
869 */
870 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
871 bt_dev_err(hdev, "last reset failed? Not resetting again");
872 return;
873 }
874
875 bt_dev_err(hdev, "Reset Realtek device via gpio");
876 gpiod_set_value_cansleep(reset_gpio, 1);
877 msleep(200);
878 gpiod_set_value_cansleep(reset_gpio, 0);
879}
880
881static void btusb_qca_cmd_timeout(struct hci_dev *hdev)
882{
883 struct btusb_data *data = hci_get_drvdata(hdev);
884 struct gpio_desc *reset_gpio = data->reset_gpio;
885
886 if (++data->cmd_timeout_cnt < 5)
887 return;
888
889 if (reset_gpio) {
890 bt_dev_err(hdev, "Reset qca device via bt_en gpio");
891
892 /* Toggle the hard reset line. The qca bt device is going to
893 * yank itself off the USB and then replug. The cleanup is handled
894 * correctly on the way out (standard USB disconnect), and the new
895 * device is detected cleanly and bound to the driver again like
896 * it should be.
897 */
898 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
899 bt_dev_err(hdev, "last reset failed? Not resetting again");
900 return;
901 }
902
903 gpiod_set_value_cansleep(reset_gpio, 0);
904 msleep(200);
905 gpiod_set_value_cansleep(reset_gpio, 1);
906
907 return;
908 }
909
910 btusb_reset(hdev);
911}
912
913static inline void btusb_free_frags(struct btusb_data *data)
914{
915 unsigned long flags;
916
917 spin_lock_irqsave(&data->rxlock, flags);
918
919 dev_kfree_skb_irq(data->evt_skb);
920 data->evt_skb = NULL;
921
922 dev_kfree_skb_irq(data->acl_skb);
923 data->acl_skb = NULL;
924
925 dev_kfree_skb_irq(data->sco_skb);
926 data->sco_skb = NULL;
927
928 spin_unlock_irqrestore(&data->rxlock, flags);
929}
930
931static int btusb_recv_event(struct btusb_data *data, struct sk_buff *skb)
932{
933 if (data->intr_interval) {
934 /* Trigger dequeue immediatelly if an event is received */
935 schedule_delayed_work(&data->rx_work, 0);
936 }
937
938 return data->recv_event(data->hdev, skb);
939}
940
941static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
942{
943 struct sk_buff *skb;
944 unsigned long flags;
945 int err = 0;
946
947 spin_lock_irqsave(&data->rxlock, flags);
948 skb = data->evt_skb;
949
950 while (count) {
951 int len;
952
953 if (!skb) {
954 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
955 if (!skb) {
956 err = -ENOMEM;
957 break;
958 }
959
960 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
961 hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
962 }
963
964 len = min_t(uint, hci_skb_expect(skb), count);
965 skb_put_data(skb, buffer, len);
966
967 count -= len;
968 buffer += len;
969 hci_skb_expect(skb) -= len;
970
971 if (skb->len == HCI_EVENT_HDR_SIZE) {
972 /* Complete event header */
973 hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
974
975 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
976 kfree_skb(skb);
977 skb = NULL;
978
979 err = -EILSEQ;
980 break;
981 }
982 }
983
984 if (!hci_skb_expect(skb)) {
985 /* Complete frame */
986 btusb_recv_event(data, skb);
987 skb = NULL;
988 }
989 }
990
991 data->evt_skb = skb;
992 spin_unlock_irqrestore(&data->rxlock, flags);
993
994 return err;
995}
996
997static int btusb_recv_acl(struct btusb_data *data, struct sk_buff *skb)
998{
999 /* Only queue ACL packet if intr_interval is set as it means
1000 * force_poll_sync has been enabled.
1001 */
1002 if (!data->intr_interval)
1003 return data->recv_acl(data->hdev, skb);
1004
1005 skb_queue_tail(&data->acl_q, skb);
1006 schedule_delayed_work(&data->rx_work, data->intr_interval);
1007
1008 return 0;
1009}
1010
1011static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
1012{
1013 struct sk_buff *skb;
1014 unsigned long flags;
1015 int err = 0;
1016
1017 spin_lock_irqsave(&data->rxlock, flags);
1018 skb = data->acl_skb;
1019
1020 while (count) {
1021 int len;
1022
1023 if (!skb) {
1024 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
1025 if (!skb) {
1026 err = -ENOMEM;
1027 break;
1028 }
1029
1030 hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
1031 hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
1032 }
1033
1034 len = min_t(uint, hci_skb_expect(skb), count);
1035 skb_put_data(skb, buffer, len);
1036
1037 count -= len;
1038 buffer += len;
1039 hci_skb_expect(skb) -= len;
1040
1041 if (skb->len == HCI_ACL_HDR_SIZE) {
1042 __u16 handle = __le16_to_cpu(hci_acl_hdr(skb)->handle);
1043 __le16 dlen = hci_acl_hdr(skb)->dlen;
1044 __u8 type;
1045
1046 /* Complete ACL header */
1047 hci_skb_expect(skb) = __le16_to_cpu(dlen);
1048
1049 /* Detect if ISO packet has been sent over bulk */
1050 if (hci_conn_num(data->hdev, ISO_LINK)) {
1051 type = hci_conn_lookup_type(data->hdev,
1052 hci_handle(handle));
1053 if (type == ISO_LINK)
1054 hci_skb_pkt_type(skb) = HCI_ISODATA_PKT;
1055 }
1056
1057 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
1058 kfree_skb(skb);
1059 skb = NULL;
1060
1061 err = -EILSEQ;
1062 break;
1063 }
1064 }
1065
1066 if (!hci_skb_expect(skb)) {
1067 /* Complete frame */
1068 btusb_recv_acl(data, skb);
1069 skb = NULL;
1070 }
1071 }
1072
1073 data->acl_skb = skb;
1074 spin_unlock_irqrestore(&data->rxlock, flags);
1075
1076 return err;
1077}
1078
1079static bool btusb_validate_sco_handle(struct hci_dev *hdev,
1080 struct hci_sco_hdr *hdr)
1081{
1082 __u16 handle;
1083
1084 if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL))
1085 // Can't validate, userspace controls everything.
1086 return true;
1087
1088 /*
1089 * USB isochronous transfers are not designed to be reliable and may
1090 * lose fragments. When this happens, the next first fragment
1091 * encountered might actually be a continuation fragment.
1092 * Validate the handle to detect it and drop it, or else the upper
1093 * layer will get garbage for a while.
1094 */
1095
1096 handle = hci_handle(__le16_to_cpu(hdr->handle));
1097
1098 switch (hci_conn_lookup_type(hdev, handle)) {
1099 case SCO_LINK:
1100 case ESCO_LINK:
1101 return true;
1102 default:
1103 return false;
1104 }
1105}
1106
1107static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
1108{
1109 struct sk_buff *skb;
1110 unsigned long flags;
1111 int err = 0;
1112
1113 spin_lock_irqsave(&data->rxlock, flags);
1114 skb = data->sco_skb;
1115
1116 while (count) {
1117 int len;
1118
1119 if (!skb) {
1120 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
1121 if (!skb) {
1122 err = -ENOMEM;
1123 break;
1124 }
1125
1126 hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
1127 hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
1128 }
1129
1130 len = min_t(uint, hci_skb_expect(skb), count);
1131 skb_put_data(skb, buffer, len);
1132
1133 count -= len;
1134 buffer += len;
1135 hci_skb_expect(skb) -= len;
1136
1137 if (skb->len == HCI_SCO_HDR_SIZE) {
1138 /* Complete SCO header */
1139 struct hci_sco_hdr *hdr = hci_sco_hdr(skb);
1140
1141 hci_skb_expect(skb) = hdr->dlen;
1142
1143 if (skb_tailroom(skb) < hci_skb_expect(skb) ||
1144 !btusb_validate_sco_handle(data->hdev, hdr)) {
1145 kfree_skb(skb);
1146 skb = NULL;
1147
1148 err = -EILSEQ;
1149 break;
1150 }
1151 }
1152
1153 if (!hci_skb_expect(skb)) {
1154 /* Complete frame */
1155 hci_recv_frame(data->hdev, skb);
1156 skb = NULL;
1157 }
1158 }
1159
1160 data->sco_skb = skb;
1161 spin_unlock_irqrestore(&data->rxlock, flags);
1162
1163 return err;
1164}
1165
1166static void btusb_intr_complete(struct urb *urb)
1167{
1168 struct hci_dev *hdev = urb->context;
1169 struct btusb_data *data = hci_get_drvdata(hdev);
1170 int err;
1171
1172 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1173 urb->actual_length);
1174
1175 if (!test_bit(HCI_RUNNING, &hdev->flags))
1176 return;
1177
1178 if (urb->status == 0) {
1179 hdev->stat.byte_rx += urb->actual_length;
1180
1181 if (btusb_recv_intr(data, urb->transfer_buffer,
1182 urb->actual_length) < 0) {
1183 bt_dev_err(hdev, "corrupted event packet");
1184 hdev->stat.err_rx++;
1185 }
1186 } else if (urb->status == -ENOENT) {
1187 /* Avoid suspend failed when usb_kill_urb */
1188 return;
1189 }
1190
1191 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
1192 return;
1193
1194 usb_mark_last_busy(data->udev);
1195 usb_anchor_urb(urb, &data->intr_anchor);
1196
1197 err = usb_submit_urb(urb, GFP_ATOMIC);
1198 if (err < 0) {
1199 /* -EPERM: urb is being killed;
1200 * -ENODEV: device got disconnected
1201 */
1202 if (err != -EPERM && err != -ENODEV)
1203 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1204 urb, -err);
1205 if (err != -EPERM)
1206 hci_cmd_sync_cancel(hdev, -err);
1207 usb_unanchor_urb(urb);
1208 }
1209}
1210
1211static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
1212{
1213 struct btusb_data *data = hci_get_drvdata(hdev);
1214 struct urb *urb;
1215 unsigned char *buf;
1216 unsigned int pipe;
1217 int err, size;
1218
1219 BT_DBG("%s", hdev->name);
1220
1221 if (!data->intr_ep)
1222 return -ENODEV;
1223
1224 urb = usb_alloc_urb(0, mem_flags);
1225 if (!urb)
1226 return -ENOMEM;
1227
1228 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
1229
1230 buf = kmalloc(size, mem_flags);
1231 if (!buf) {
1232 usb_free_urb(urb);
1233 return -ENOMEM;
1234 }
1235
1236 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
1237
1238 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
1239 btusb_intr_complete, hdev, data->intr_ep->bInterval);
1240
1241 urb->transfer_flags |= URB_FREE_BUFFER;
1242
1243 usb_anchor_urb(urb, &data->intr_anchor);
1244
1245 err = usb_submit_urb(urb, mem_flags);
1246 if (err < 0) {
1247 if (err != -EPERM && err != -ENODEV)
1248 bt_dev_err(hdev, "urb %p submission failed (%d)",
1249 urb, -err);
1250 if (err != -EPERM)
1251 hci_cmd_sync_cancel(hdev, -err);
1252 usb_unanchor_urb(urb);
1253 }
1254
1255 /* Only initialize intr_interval if URB poll sync is enabled */
1256 if (!data->poll_sync)
1257 goto done;
1258
1259 /* The units are frames (milliseconds) for full and low speed devices,
1260 * and microframes (1/8 millisecond) for highspeed and SuperSpeed
1261 * devices.
1262 *
1263 * This is done once on open/resume so it shouldn't change even if
1264 * force_poll_sync changes.
1265 */
1266 switch (urb->dev->speed) {
1267 case USB_SPEED_SUPER_PLUS:
1268 case USB_SPEED_SUPER: /* units are 125us */
1269 data->intr_interval = usecs_to_jiffies(urb->interval * 125);
1270 break;
1271 default:
1272 data->intr_interval = msecs_to_jiffies(urb->interval);
1273 break;
1274 }
1275
1276done:
1277 usb_free_urb(urb);
1278
1279 return err;
1280}
1281
1282static void btusb_bulk_complete(struct urb *urb)
1283{
1284 struct hci_dev *hdev = urb->context;
1285 struct btusb_data *data = hci_get_drvdata(hdev);
1286 int err;
1287
1288 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1289 urb->actual_length);
1290
1291 if (!test_bit(HCI_RUNNING, &hdev->flags))
1292 return;
1293
1294 if (urb->status == 0) {
1295 hdev->stat.byte_rx += urb->actual_length;
1296
1297 if (data->recv_bulk(data, urb->transfer_buffer,
1298 urb->actual_length) < 0) {
1299 bt_dev_err(hdev, "corrupted ACL packet");
1300 hdev->stat.err_rx++;
1301 }
1302 } else if (urb->status == -ENOENT) {
1303 /* Avoid suspend failed when usb_kill_urb */
1304 return;
1305 }
1306
1307 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
1308 return;
1309
1310 usb_anchor_urb(urb, &data->bulk_anchor);
1311 usb_mark_last_busy(data->udev);
1312
1313 err = usb_submit_urb(urb, GFP_ATOMIC);
1314 if (err < 0) {
1315 /* -EPERM: urb is being killed;
1316 * -ENODEV: device got disconnected
1317 */
1318 if (err != -EPERM && err != -ENODEV)
1319 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1320 urb, -err);
1321 usb_unanchor_urb(urb);
1322 }
1323}
1324
1325static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
1326{
1327 struct btusb_data *data = hci_get_drvdata(hdev);
1328 struct urb *urb;
1329 unsigned char *buf;
1330 unsigned int pipe;
1331 int err, size = HCI_MAX_FRAME_SIZE;
1332
1333 BT_DBG("%s", hdev->name);
1334
1335 if (!data->bulk_rx_ep)
1336 return -ENODEV;
1337
1338 urb = usb_alloc_urb(0, mem_flags);
1339 if (!urb)
1340 return -ENOMEM;
1341
1342 buf = kmalloc(size, mem_flags);
1343 if (!buf) {
1344 usb_free_urb(urb);
1345 return -ENOMEM;
1346 }
1347
1348 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
1349
1350 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1351 btusb_bulk_complete, hdev);
1352
1353 urb->transfer_flags |= URB_FREE_BUFFER;
1354
1355 usb_mark_last_busy(data->udev);
1356 usb_anchor_urb(urb, &data->bulk_anchor);
1357
1358 err = usb_submit_urb(urb, mem_flags);
1359 if (err < 0) {
1360 if (err != -EPERM && err != -ENODEV)
1361 bt_dev_err(hdev, "urb %p submission failed (%d)",
1362 urb, -err);
1363 usb_unanchor_urb(urb);
1364 }
1365
1366 usb_free_urb(urb);
1367
1368 return err;
1369}
1370
1371static void btusb_isoc_complete(struct urb *urb)
1372{
1373 struct hci_dev *hdev = urb->context;
1374 struct btusb_data *data = hci_get_drvdata(hdev);
1375 int i, err;
1376
1377 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1378 urb->actual_length);
1379
1380 if (!test_bit(HCI_RUNNING, &hdev->flags))
1381 return;
1382
1383 if (urb->status == 0) {
1384 for (i = 0; i < urb->number_of_packets; i++) {
1385 unsigned int offset = urb->iso_frame_desc[i].offset;
1386 unsigned int length = urb->iso_frame_desc[i].actual_length;
1387
1388 if (urb->iso_frame_desc[i].status)
1389 continue;
1390
1391 hdev->stat.byte_rx += length;
1392
1393 if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
1394 length) < 0) {
1395 bt_dev_err(hdev, "corrupted SCO packet");
1396 hdev->stat.err_rx++;
1397 }
1398 }
1399 } else if (urb->status == -ENOENT) {
1400 /* Avoid suspend failed when usb_kill_urb */
1401 return;
1402 }
1403
1404 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
1405 return;
1406
1407 usb_anchor_urb(urb, &data->isoc_anchor);
1408
1409 err = usb_submit_urb(urb, GFP_ATOMIC);
1410 if (err < 0) {
1411 /* -EPERM: urb is being killed;
1412 * -ENODEV: device got disconnected
1413 */
1414 if (err != -EPERM && err != -ENODEV)
1415 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1416 urb, -err);
1417 usb_unanchor_urb(urb);
1418 }
1419}
1420
1421static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len,
1422 int mtu, struct btusb_data *data)
1423{
1424 int i = 0, offset = 0;
1425 unsigned int interval;
1426
1427 BT_DBG("len %d mtu %d", len, mtu);
1428
1429 /* For mSBC ALT 6 settings some chips need to transmit the data
1430 * continuously without the zero length of USB packets.
1431 */
1432 if (test_bit(BTUSB_ALT6_CONTINUOUS_TX, &data->flags))
1433 goto ignore_usb_alt6_packet_flow;
1434
1435 /* For mSBC ALT 6 setting the host will send the packet at continuous
1436 * flow. As per core spec 5, vol 4, part B, table 2.1. For ALT setting
1437 * 6 the HCI PACKET INTERVAL should be 7.5ms for every usb packets.
1438 * To maintain the rate we send 63bytes of usb packets alternatively for
1439 * 7ms and 8ms to maintain the rate as 7.5ms.
1440 */
1441 if (data->usb_alt6_packet_flow) {
1442 interval = 7;
1443 data->usb_alt6_packet_flow = false;
1444 } else {
1445 interval = 6;
1446 data->usb_alt6_packet_flow = true;
1447 }
1448
1449 for (i = 0; i < interval; i++) {
1450 urb->iso_frame_desc[i].offset = offset;
1451 urb->iso_frame_desc[i].length = offset;
1452 }
1453
1454ignore_usb_alt6_packet_flow:
1455 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1456 urb->iso_frame_desc[i].offset = offset;
1457 urb->iso_frame_desc[i].length = len;
1458 i++;
1459 }
1460
1461 urb->number_of_packets = i;
1462}
1463
1464static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
1465{
1466 int i, offset = 0;
1467
1468 BT_DBG("len %d mtu %d", len, mtu);
1469
1470 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
1471 i++, offset += mtu, len -= mtu) {
1472 urb->iso_frame_desc[i].offset = offset;
1473 urb->iso_frame_desc[i].length = mtu;
1474 }
1475
1476 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1477 urb->iso_frame_desc[i].offset = offset;
1478 urb->iso_frame_desc[i].length = len;
1479 i++;
1480 }
1481
1482 urb->number_of_packets = i;
1483}
1484
1485static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
1486{
1487 struct btusb_data *data = hci_get_drvdata(hdev);
1488 struct urb *urb;
1489 unsigned char *buf;
1490 unsigned int pipe;
1491 int err, size;
1492
1493 BT_DBG("%s", hdev->name);
1494
1495 if (!data->isoc_rx_ep)
1496 return -ENODEV;
1497
1498 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
1499 if (!urb)
1500 return -ENOMEM;
1501
1502 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
1503 BTUSB_MAX_ISOC_FRAMES;
1504
1505 buf = kmalloc(size, mem_flags);
1506 if (!buf) {
1507 usb_free_urb(urb);
1508 return -ENOMEM;
1509 }
1510
1511 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
1512
1513 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
1514 hdev, data->isoc_rx_ep->bInterval);
1515
1516 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
1517
1518 __fill_isoc_descriptor(urb, size,
1519 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
1520
1521 usb_anchor_urb(urb, &data->isoc_anchor);
1522
1523 err = usb_submit_urb(urb, mem_flags);
1524 if (err < 0) {
1525 if (err != -EPERM && err != -ENODEV)
1526 bt_dev_err(hdev, "urb %p submission failed (%d)",
1527 urb, -err);
1528 usb_unanchor_urb(urb);
1529 }
1530
1531 usb_free_urb(urb);
1532
1533 return err;
1534}
1535
1536static void btusb_diag_complete(struct urb *urb)
1537{
1538 struct hci_dev *hdev = urb->context;
1539 struct btusb_data *data = hci_get_drvdata(hdev);
1540 int err;
1541
1542 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1543 urb->actual_length);
1544
1545 if (urb->status == 0) {
1546 struct sk_buff *skb;
1547
1548 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1549 if (skb) {
1550 skb_put_data(skb, urb->transfer_buffer,
1551 urb->actual_length);
1552 hci_recv_diag(hdev, skb);
1553 }
1554 } else if (urb->status == -ENOENT) {
1555 /* Avoid suspend failed when usb_kill_urb */
1556 return;
1557 }
1558
1559 if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1560 return;
1561
1562 usb_anchor_urb(urb, &data->diag_anchor);
1563 usb_mark_last_busy(data->udev);
1564
1565 err = usb_submit_urb(urb, GFP_ATOMIC);
1566 if (err < 0) {
1567 /* -EPERM: urb is being killed;
1568 * -ENODEV: device got disconnected
1569 */
1570 if (err != -EPERM && err != -ENODEV)
1571 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1572 urb, -err);
1573 usb_unanchor_urb(urb);
1574 }
1575}
1576
1577static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1578{
1579 struct btusb_data *data = hci_get_drvdata(hdev);
1580 struct urb *urb;
1581 unsigned char *buf;
1582 unsigned int pipe;
1583 int err, size = HCI_MAX_FRAME_SIZE;
1584
1585 BT_DBG("%s", hdev->name);
1586
1587 if (!data->diag_rx_ep)
1588 return -ENODEV;
1589
1590 urb = usb_alloc_urb(0, mem_flags);
1591 if (!urb)
1592 return -ENOMEM;
1593
1594 buf = kmalloc(size, mem_flags);
1595 if (!buf) {
1596 usb_free_urb(urb);
1597 return -ENOMEM;
1598 }
1599
1600 pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1601
1602 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1603 btusb_diag_complete, hdev);
1604
1605 urb->transfer_flags |= URB_FREE_BUFFER;
1606
1607 usb_mark_last_busy(data->udev);
1608 usb_anchor_urb(urb, &data->diag_anchor);
1609
1610 err = usb_submit_urb(urb, mem_flags);
1611 if (err < 0) {
1612 if (err != -EPERM && err != -ENODEV)
1613 bt_dev_err(hdev, "urb %p submission failed (%d)",
1614 urb, -err);
1615 usb_unanchor_urb(urb);
1616 }
1617
1618 usb_free_urb(urb);
1619
1620 return err;
1621}
1622
1623static void btusb_tx_complete(struct urb *urb)
1624{
1625 struct sk_buff *skb = urb->context;
1626 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1627 struct btusb_data *data = hci_get_drvdata(hdev);
1628 unsigned long flags;
1629
1630 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1631 urb->actual_length);
1632
1633 if (!test_bit(HCI_RUNNING, &hdev->flags))
1634 goto done;
1635
1636 if (!urb->status) {
1637 hdev->stat.byte_tx += urb->transfer_buffer_length;
1638 } else {
1639 if (hci_skb_pkt_type(skb) == HCI_COMMAND_PKT)
1640 hci_cmd_sync_cancel(hdev, -urb->status);
1641 hdev->stat.err_tx++;
1642 }
1643
1644done:
1645 spin_lock_irqsave(&data->txlock, flags);
1646 data->tx_in_flight--;
1647 spin_unlock_irqrestore(&data->txlock, flags);
1648
1649 kfree(urb->setup_packet);
1650
1651 kfree_skb(skb);
1652}
1653
1654static void btusb_isoc_tx_complete(struct urb *urb)
1655{
1656 struct sk_buff *skb = urb->context;
1657 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1658
1659 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1660 urb->actual_length);
1661
1662 if (!test_bit(HCI_RUNNING, &hdev->flags))
1663 goto done;
1664
1665 if (!urb->status)
1666 hdev->stat.byte_tx += urb->transfer_buffer_length;
1667 else
1668 hdev->stat.err_tx++;
1669
1670done:
1671 kfree(urb->setup_packet);
1672
1673 kfree_skb(skb);
1674}
1675
1676static int btusb_open(struct hci_dev *hdev)
1677{
1678 struct btusb_data *data = hci_get_drvdata(hdev);
1679 int err;
1680
1681 BT_DBG("%s", hdev->name);
1682
1683 err = usb_autopm_get_interface(data->intf);
1684 if (err < 0)
1685 return err;
1686
1687 /* Patching USB firmware files prior to starting any URBs of HCI path
1688 * It is more safe to use USB bulk channel for downloading USB patch
1689 */
1690 if (data->setup_on_usb) {
1691 err = data->setup_on_usb(hdev);
1692 if (err < 0)
1693 goto setup_fail;
1694 }
1695
1696 data->intf->needs_remote_wakeup = 1;
1697
1698 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1699 goto done;
1700
1701 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1702 if (err < 0)
1703 goto failed;
1704
1705 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1706 if (err < 0) {
1707 usb_kill_anchored_urbs(&data->intr_anchor);
1708 goto failed;
1709 }
1710
1711 set_bit(BTUSB_BULK_RUNNING, &data->flags);
1712 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1713
1714 if (data->diag) {
1715 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1716 set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1717 }
1718
1719done:
1720 usb_autopm_put_interface(data->intf);
1721 return 0;
1722
1723failed:
1724 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1725setup_fail:
1726 usb_autopm_put_interface(data->intf);
1727 return err;
1728}
1729
1730static void btusb_stop_traffic(struct btusb_data *data)
1731{
1732 usb_kill_anchored_urbs(&data->intr_anchor);
1733 usb_kill_anchored_urbs(&data->bulk_anchor);
1734 usb_kill_anchored_urbs(&data->isoc_anchor);
1735 usb_kill_anchored_urbs(&data->diag_anchor);
1736 usb_kill_anchored_urbs(&data->ctrl_anchor);
1737}
1738
1739static int btusb_close(struct hci_dev *hdev)
1740{
1741 struct btusb_data *data = hci_get_drvdata(hdev);
1742 int err;
1743
1744 BT_DBG("%s", hdev->name);
1745
1746 cancel_delayed_work(&data->rx_work);
1747 cancel_work_sync(&data->work);
1748 cancel_work_sync(&data->waker);
1749
1750 skb_queue_purge(&data->acl_q);
1751
1752 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1753 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1754 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1755 clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1756
1757 btusb_stop_traffic(data);
1758 btusb_free_frags(data);
1759
1760 err = usb_autopm_get_interface(data->intf);
1761 if (err < 0)
1762 goto failed;
1763
1764 data->intf->needs_remote_wakeup = 0;
1765
1766 /* Enable remote wake up for auto-suspend */
1767 if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags))
1768 data->intf->needs_remote_wakeup = 1;
1769
1770 usb_autopm_put_interface(data->intf);
1771
1772failed:
1773 usb_scuttle_anchored_urbs(&data->deferred);
1774 return 0;
1775}
1776
1777static int btusb_flush(struct hci_dev *hdev)
1778{
1779 struct btusb_data *data = hci_get_drvdata(hdev);
1780
1781 BT_DBG("%s", hdev->name);
1782
1783 cancel_delayed_work(&data->rx_work);
1784
1785 skb_queue_purge(&data->acl_q);
1786
1787 usb_kill_anchored_urbs(&data->tx_anchor);
1788 btusb_free_frags(data);
1789
1790 return 0;
1791}
1792
1793static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1794{
1795 struct btusb_data *data = hci_get_drvdata(hdev);
1796 struct usb_ctrlrequest *dr;
1797 struct urb *urb;
1798 unsigned int pipe;
1799
1800 urb = usb_alloc_urb(0, GFP_KERNEL);
1801 if (!urb)
1802 return ERR_PTR(-ENOMEM);
1803
1804 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1805 if (!dr) {
1806 usb_free_urb(urb);
1807 return ERR_PTR(-ENOMEM);
1808 }
1809
1810 dr->bRequestType = data->cmdreq_type;
1811 dr->bRequest = data->cmdreq;
1812 dr->wIndex = 0;
1813 dr->wValue = 0;
1814 dr->wLength = __cpu_to_le16(skb->len);
1815
1816 pipe = usb_sndctrlpipe(data->udev, 0x00);
1817
1818 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1819 skb->data, skb->len, btusb_tx_complete, skb);
1820
1821 skb->dev = (void *)hdev;
1822
1823 return urb;
1824}
1825
1826static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1827{
1828 struct btusb_data *data = hci_get_drvdata(hdev);
1829 struct urb *urb;
1830 unsigned int pipe;
1831
1832 if (!data->bulk_tx_ep)
1833 return ERR_PTR(-ENODEV);
1834
1835 urb = usb_alloc_urb(0, GFP_KERNEL);
1836 if (!urb)
1837 return ERR_PTR(-ENOMEM);
1838
1839 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1840
1841 usb_fill_bulk_urb(urb, data->udev, pipe,
1842 skb->data, skb->len, btusb_tx_complete, skb);
1843
1844 skb->dev = (void *)hdev;
1845
1846 return urb;
1847}
1848
1849static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1850{
1851 struct btusb_data *data = hci_get_drvdata(hdev);
1852 struct urb *urb;
1853 unsigned int pipe;
1854
1855 if (!data->isoc_tx_ep)
1856 return ERR_PTR(-ENODEV);
1857
1858 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1859 if (!urb)
1860 return ERR_PTR(-ENOMEM);
1861
1862 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1863
1864 usb_fill_int_urb(urb, data->udev, pipe,
1865 skb->data, skb->len, btusb_isoc_tx_complete,
1866 skb, data->isoc_tx_ep->bInterval);
1867
1868 urb->transfer_flags = URB_ISO_ASAP;
1869
1870 if (data->isoc_altsetting == 6)
1871 __fill_isoc_descriptor_msbc(urb, skb->len,
1872 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize),
1873 data);
1874 else
1875 __fill_isoc_descriptor(urb, skb->len,
1876 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1877 skb->dev = (void *)hdev;
1878
1879 return urb;
1880}
1881
1882static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1883{
1884 struct btusb_data *data = hci_get_drvdata(hdev);
1885 int err;
1886
1887 usb_anchor_urb(urb, &data->tx_anchor);
1888
1889 err = usb_submit_urb(urb, GFP_KERNEL);
1890 if (err < 0) {
1891 if (err != -EPERM && err != -ENODEV)
1892 bt_dev_err(hdev, "urb %p submission failed (%d)",
1893 urb, -err);
1894 kfree(urb->setup_packet);
1895 usb_unanchor_urb(urb);
1896 } else {
1897 usb_mark_last_busy(data->udev);
1898 }
1899
1900 usb_free_urb(urb);
1901 return err;
1902}
1903
1904static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1905{
1906 struct btusb_data *data = hci_get_drvdata(hdev);
1907 unsigned long flags;
1908 bool suspending;
1909
1910 spin_lock_irqsave(&data->txlock, flags);
1911 suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1912 if (!suspending)
1913 data->tx_in_flight++;
1914 spin_unlock_irqrestore(&data->txlock, flags);
1915
1916 if (!suspending)
1917 return submit_tx_urb(hdev, urb);
1918
1919 usb_anchor_urb(urb, &data->deferred);
1920 schedule_work(&data->waker);
1921
1922 usb_free_urb(urb);
1923 return 0;
1924}
1925
1926static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1927{
1928 struct urb *urb;
1929
1930 BT_DBG("%s", hdev->name);
1931
1932 switch (hci_skb_pkt_type(skb)) {
1933 case HCI_COMMAND_PKT:
1934 urb = alloc_ctrl_urb(hdev, skb);
1935 if (IS_ERR(urb))
1936 return PTR_ERR(urb);
1937
1938 hdev->stat.cmd_tx++;
1939 return submit_or_queue_tx_urb(hdev, urb);
1940
1941 case HCI_ACLDATA_PKT:
1942 urb = alloc_bulk_urb(hdev, skb);
1943 if (IS_ERR(urb))
1944 return PTR_ERR(urb);
1945
1946 hdev->stat.acl_tx++;
1947 return submit_or_queue_tx_urb(hdev, urb);
1948
1949 case HCI_SCODATA_PKT:
1950 if (hci_conn_num(hdev, SCO_LINK) < 1)
1951 return -ENODEV;
1952
1953 urb = alloc_isoc_urb(hdev, skb);
1954 if (IS_ERR(urb))
1955 return PTR_ERR(urb);
1956
1957 hdev->stat.sco_tx++;
1958 return submit_tx_urb(hdev, urb);
1959
1960 case HCI_ISODATA_PKT:
1961 urb = alloc_bulk_urb(hdev, skb);
1962 if (IS_ERR(urb))
1963 return PTR_ERR(urb);
1964
1965 return submit_or_queue_tx_urb(hdev, urb);
1966 }
1967
1968 return -EILSEQ;
1969}
1970
1971static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1972{
1973 struct btusb_data *data = hci_get_drvdata(hdev);
1974
1975 BT_DBG("%s evt %d", hdev->name, evt);
1976
1977 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1978 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1979 data->air_mode = evt;
1980 schedule_work(&data->work);
1981 }
1982}
1983
1984static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1985{
1986 struct btusb_data *data = hci_get_drvdata(hdev);
1987 struct usb_interface *intf = data->isoc;
1988 struct usb_endpoint_descriptor *ep_desc;
1989 int i, err;
1990
1991 if (!data->isoc)
1992 return -ENODEV;
1993
1994 err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1995 if (err < 0) {
1996 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1997 return err;
1998 }
1999
2000 data->isoc_altsetting = altsetting;
2001
2002 data->isoc_tx_ep = NULL;
2003 data->isoc_rx_ep = NULL;
2004
2005 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2006 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2007
2008 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
2009 data->isoc_tx_ep = ep_desc;
2010 continue;
2011 }
2012
2013 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
2014 data->isoc_rx_ep = ep_desc;
2015 continue;
2016 }
2017 }
2018
2019 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
2020 bt_dev_err(hdev, "invalid SCO descriptors");
2021 return -ENODEV;
2022 }
2023
2024 return 0;
2025}
2026
2027static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts)
2028{
2029 struct btusb_data *data = hci_get_drvdata(hdev);
2030 int err;
2031
2032 if (data->isoc_altsetting != new_alts) {
2033 unsigned long flags;
2034
2035 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2036 usb_kill_anchored_urbs(&data->isoc_anchor);
2037
2038 /* When isochronous alternate setting needs to be
2039 * changed, because SCO connection has been added
2040 * or removed, a packet fragment may be left in the
2041 * reassembling state. This could lead to wrongly
2042 * assembled fragments.
2043 *
2044 * Clear outstanding fragment when selecting a new
2045 * alternate setting.
2046 */
2047 spin_lock_irqsave(&data->rxlock, flags);
2048 kfree_skb(data->sco_skb);
2049 data->sco_skb = NULL;
2050 spin_unlock_irqrestore(&data->rxlock, flags);
2051
2052 err = __set_isoc_interface(hdev, new_alts);
2053 if (err < 0)
2054 return err;
2055 }
2056
2057 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2058 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
2059 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2060 else
2061 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
2062 }
2063
2064 return 0;
2065}
2066
2067static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data,
2068 int alt)
2069{
2070 struct usb_interface *intf = data->isoc;
2071 int i;
2072
2073 BT_DBG("Looking for Alt no :%d", alt);
2074
2075 if (!intf)
2076 return NULL;
2077
2078 for (i = 0; i < intf->num_altsetting; i++) {
2079 if (intf->altsetting[i].desc.bAlternateSetting == alt)
2080 return &intf->altsetting[i];
2081 }
2082
2083 return NULL;
2084}
2085
2086static void btusb_work(struct work_struct *work)
2087{
2088 struct btusb_data *data = container_of(work, struct btusb_data, work);
2089 struct hci_dev *hdev = data->hdev;
2090 int new_alts = 0;
2091 int err;
2092
2093 if (data->sco_num > 0) {
2094 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
2095 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
2096 if (err < 0) {
2097 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2098 usb_kill_anchored_urbs(&data->isoc_anchor);
2099 return;
2100 }
2101
2102 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
2103 }
2104
2105 if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_CVSD) {
2106 if (hdev->voice_setting & 0x0020) {
2107 static const int alts[3] = { 2, 4, 5 };
2108
2109 new_alts = alts[data->sco_num - 1];
2110 } else {
2111 new_alts = data->sco_num;
2112 }
2113 } else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) {
2114 /* Bluetooth USB spec recommends alt 6 (63 bytes), but
2115 * many adapters do not support it. Alt 1 appears to
2116 * work for all adapters that do not have alt 6, and
2117 * which work with WBS at all. Some devices prefer
2118 * alt 3 (HCI payload >= 60 Bytes let air packet
2119 * data satisfy 60 bytes), requiring
2120 * MTU >= 3 (packets) * 25 (size) - 3 (headers) = 72
2121 * see also Core spec 5, vol 4, B 2.1.1 & Table 2.1.
2122 */
2123 if (btusb_find_altsetting(data, 6))
2124 new_alts = 6;
2125 else if (btusb_find_altsetting(data, 3) &&
2126 hdev->sco_mtu >= 72 &&
2127 test_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags))
2128 new_alts = 3;
2129 else
2130 new_alts = 1;
2131 }
2132
2133 if (btusb_switch_alt_setting(hdev, new_alts) < 0)
2134 bt_dev_err(hdev, "set USB alt:(%d) failed!", new_alts);
2135 } else {
2136 usb_kill_anchored_urbs(&data->isoc_anchor);
2137
2138 if (test_and_clear_bit(BTUSB_ISOC_RUNNING, &data->flags))
2139 __set_isoc_interface(hdev, 0);
2140
2141 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
2142 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
2143 }
2144}
2145
2146static void btusb_waker(struct work_struct *work)
2147{
2148 struct btusb_data *data = container_of(work, struct btusb_data, waker);
2149 int err;
2150
2151 err = usb_autopm_get_interface(data->intf);
2152 if (err < 0)
2153 return;
2154
2155 usb_autopm_put_interface(data->intf);
2156}
2157
2158static void btusb_rx_work(struct work_struct *work)
2159{
2160 struct btusb_data *data = container_of(work, struct btusb_data,
2161 rx_work.work);
2162 struct sk_buff *skb;
2163
2164 /* Dequeue ACL data received during the interval */
2165 while ((skb = skb_dequeue(&data->acl_q)))
2166 data->recv_acl(data->hdev, skb);
2167}
2168
2169static int btusb_setup_bcm92035(struct hci_dev *hdev)
2170{
2171 struct sk_buff *skb;
2172 u8 val = 0x00;
2173
2174 BT_DBG("%s", hdev->name);
2175
2176 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
2177 if (IS_ERR(skb))
2178 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
2179 else
2180 kfree_skb(skb);
2181
2182 return 0;
2183}
2184
2185static int btusb_setup_csr(struct hci_dev *hdev)
2186{
2187 struct btusb_data *data = hci_get_drvdata(hdev);
2188 u16 bcdDevice = le16_to_cpu(data->udev->descriptor.bcdDevice);
2189 struct hci_rp_read_local_version *rp;
2190 struct sk_buff *skb;
2191 bool is_fake = false;
2192 int ret;
2193
2194 BT_DBG("%s", hdev->name);
2195
2196 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
2197 HCI_INIT_TIMEOUT);
2198 if (IS_ERR(skb)) {
2199 int err = PTR_ERR(skb);
2200 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
2201 return err;
2202 }
2203
2204 rp = skb_pull_data(skb, sizeof(*rp));
2205 if (!rp) {
2206 bt_dev_err(hdev, "CSR: Local version length mismatch");
2207 kfree_skb(skb);
2208 return -EIO;
2209 }
2210
2211 bt_dev_info(hdev, "CSR: Setting up dongle with HCI ver=%u rev=%04x",
2212 rp->hci_ver, le16_to_cpu(rp->hci_rev));
2213
2214 bt_dev_info(hdev, "LMP ver=%u subver=%04x; manufacturer=%u",
2215 rp->lmp_ver, le16_to_cpu(rp->lmp_subver),
2216 le16_to_cpu(rp->manufacturer));
2217
2218 /* Detect a wide host of Chinese controllers that aren't CSR.
2219 *
2220 * Known fake bcdDevices: 0x0100, 0x0134, 0x1915, 0x2520, 0x7558, 0x8891
2221 *
2222 * The main thing they have in common is that these are really popular low-cost
2223 * options that support newer Bluetooth versions but rely on heavy VID/PID
2224 * squatting of this poor old Bluetooth 1.1 device. Even sold as such.
2225 *
2226 * We detect actual CSR devices by checking that the HCI manufacturer code
2227 * is Cambridge Silicon Radio (10) and ensuring that LMP sub-version and
2228 * HCI rev values always match. As they both store the firmware number.
2229 */
2230 if (le16_to_cpu(rp->manufacturer) != 10 ||
2231 le16_to_cpu(rp->hci_rev) != le16_to_cpu(rp->lmp_subver))
2232 is_fake = true;
2233
2234 /* Known legit CSR firmware build numbers and their supported BT versions:
2235 * - 1.1 (0x1) -> 0x0073, 0x020d, 0x033c, 0x034e
2236 * - 1.2 (0x2) -> 0x04d9, 0x0529
2237 * - 2.0 (0x3) -> 0x07a6, 0x07ad, 0x0c5c
2238 * - 2.1 (0x4) -> 0x149c, 0x1735, 0x1899 (0x1899 is a BlueCore4-External)
2239 * - 4.0 (0x6) -> 0x1d86, 0x2031, 0x22bb
2240 *
2241 * e.g. Real CSR dongles with LMP subversion 0x73 are old enough that
2242 * support BT 1.1 only; so it's a dead giveaway when some
2243 * third-party BT 4.0 dongle reuses it.
2244 */
2245 else if (le16_to_cpu(rp->lmp_subver) <= 0x034e &&
2246 rp->hci_ver > BLUETOOTH_VER_1_1)
2247 is_fake = true;
2248
2249 else if (le16_to_cpu(rp->lmp_subver) <= 0x0529 &&
2250 rp->hci_ver > BLUETOOTH_VER_1_2)
2251 is_fake = true;
2252
2253 else if (le16_to_cpu(rp->lmp_subver) <= 0x0c5c &&
2254 rp->hci_ver > BLUETOOTH_VER_2_0)
2255 is_fake = true;
2256
2257 else if (le16_to_cpu(rp->lmp_subver) <= 0x1899 &&
2258 rp->hci_ver > BLUETOOTH_VER_2_1)
2259 is_fake = true;
2260
2261 else if (le16_to_cpu(rp->lmp_subver) <= 0x22bb &&
2262 rp->hci_ver > BLUETOOTH_VER_4_0)
2263 is_fake = true;
2264
2265 /* Other clones which beat all the above checks */
2266 else if (bcdDevice == 0x0134 &&
2267 le16_to_cpu(rp->lmp_subver) == 0x0c5c &&
2268 rp->hci_ver == BLUETOOTH_VER_2_0)
2269 is_fake = true;
2270
2271 if (is_fake) {
2272 bt_dev_warn(hdev, "CSR: Unbranded CSR clone detected; adding workarounds and force-suspending once...");
2273
2274 /* Generally these clones have big discrepancies between
2275 * advertised features and what's actually supported.
2276 * Probably will need to be expanded in the future;
2277 * without these the controller will lock up.
2278 */
2279 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2280 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks);
2281 set_bit(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL, &hdev->quirks);
2282 set_bit(HCI_QUIRK_NO_SUSPEND_NOTIFIER, &hdev->quirks);
2283
2284 /* Clear the reset quirk since this is not an actual
2285 * early Bluetooth 1.1 device from CSR.
2286 */
2287 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2288 clear_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2289
2290 /*
2291 * Special workaround for these BT 4.0 chip clones, and potentially more:
2292 *
2293 * - 0x0134: a Barrot 8041a02 (HCI rev: 0x0810 sub: 0x1012)
2294 * - 0x7558: IC markings FR3191AHAL 749H15143 (HCI rev/sub-version: 0x0709)
2295 *
2296 * These controllers are really messed-up.
2297 *
2298 * 1. Their bulk RX endpoint will never report any data unless
2299 * the device was suspended at least once (yes, really).
2300 * 2. They will not wakeup when autosuspended and receiving data
2301 * on their bulk RX endpoint from e.g. a keyboard or mouse
2302 * (IOW remote-wakeup support is broken for the bulk endpoint).
2303 *
2304 * To fix 1. enable runtime-suspend, force-suspend the
2305 * HCI and then wake-it up by disabling runtime-suspend.
2306 *
2307 * To fix 2. clear the HCI's can_wake flag, this way the HCI
2308 * will still be autosuspended when it is not open.
2309 *
2310 * --
2311 *
2312 * Because these are widespread problems we prefer generic solutions; so
2313 * apply this initialization quirk to every controller that gets here,
2314 * it should be harmless. The alternative is to not work at all.
2315 */
2316 pm_runtime_allow(&data->udev->dev);
2317
2318 ret = pm_runtime_suspend(&data->udev->dev);
2319 if (ret >= 0)
2320 msleep(200);
2321 else
2322 bt_dev_warn(hdev, "CSR: Couldn't suspend the device for our Barrot 8041a02 receive-issue workaround");
2323
2324 pm_runtime_forbid(&data->udev->dev);
2325
2326 device_set_wakeup_capable(&data->udev->dev, false);
2327
2328 /* Re-enable autosuspend if this was requested */
2329 if (enable_autosuspend)
2330 usb_enable_autosuspend(data->udev);
2331 }
2332
2333 kfree_skb(skb);
2334
2335 return 0;
2336}
2337
2338static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
2339{
2340 struct sk_buff *skb;
2341 struct hci_event_hdr *hdr;
2342 struct hci_ev_cmd_complete *evt;
2343
2344 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
2345 if (!skb)
2346 return -ENOMEM;
2347
2348 hdr = skb_put(skb, sizeof(*hdr));
2349 hdr->evt = HCI_EV_CMD_COMPLETE;
2350 hdr->plen = sizeof(*evt) + 1;
2351
2352 evt = skb_put(skb, sizeof(*evt));
2353 evt->ncmd = 0x01;
2354 evt->opcode = cpu_to_le16(opcode);
2355
2356 skb_put_u8(skb, 0x00);
2357
2358 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2359
2360 return hci_recv_frame(hdev, skb);
2361}
2362
2363static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
2364 int count)
2365{
2366 struct hci_dev *hdev = data->hdev;
2367
2368 /* When the device is in bootloader mode, then it can send
2369 * events via the bulk endpoint. These events are treated the
2370 * same way as the ones received from the interrupt endpoint.
2371 */
2372 if (btintel_test_flag(hdev, INTEL_BOOTLOADER))
2373 return btusb_recv_intr(data, buffer, count);
2374
2375 return btusb_recv_bulk(data, buffer, count);
2376}
2377
2378static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2379{
2380 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) {
2381 struct hci_event_hdr *hdr = (void *)skb->data;
2382
2383 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2384 hdr->plen > 0) {
2385 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2386 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2387
2388 switch (skb->data[2]) {
2389 case 0x02:
2390 /* When switching to the operational firmware
2391 * the device sends a vendor specific event
2392 * indicating that the bootup completed.
2393 */
2394 btintel_bootup(hdev, ptr, len);
2395 break;
2396 case 0x06:
2397 /* When the firmware loading completes the
2398 * device sends out a vendor specific event
2399 * indicating the result of the firmware
2400 * loading.
2401 */
2402 btintel_secure_send_result(hdev, ptr, len);
2403 break;
2404 }
2405 }
2406 }
2407
2408 return hci_recv_frame(hdev, skb);
2409}
2410
2411static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2412{
2413 struct urb *urb;
2414
2415 BT_DBG("%s", hdev->name);
2416
2417 switch (hci_skb_pkt_type(skb)) {
2418 case HCI_COMMAND_PKT:
2419 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) {
2420 struct hci_command_hdr *cmd = (void *)skb->data;
2421 __u16 opcode = le16_to_cpu(cmd->opcode);
2422
2423 /* When in bootloader mode and the command 0xfc09
2424 * is received, it needs to be send down the
2425 * bulk endpoint. So allocate a bulk URB instead.
2426 */
2427 if (opcode == 0xfc09)
2428 urb = alloc_bulk_urb(hdev, skb);
2429 else
2430 urb = alloc_ctrl_urb(hdev, skb);
2431
2432 /* When the 0xfc01 command is issued to boot into
2433 * the operational firmware, it will actually not
2434 * send a command complete event. To keep the flow
2435 * control working inject that event here.
2436 */
2437 if (opcode == 0xfc01)
2438 inject_cmd_complete(hdev, opcode);
2439 } else {
2440 urb = alloc_ctrl_urb(hdev, skb);
2441 }
2442 if (IS_ERR(urb))
2443 return PTR_ERR(urb);
2444
2445 hdev->stat.cmd_tx++;
2446 return submit_or_queue_tx_urb(hdev, urb);
2447
2448 case HCI_ACLDATA_PKT:
2449 urb = alloc_bulk_urb(hdev, skb);
2450 if (IS_ERR(urb))
2451 return PTR_ERR(urb);
2452
2453 hdev->stat.acl_tx++;
2454 return submit_or_queue_tx_urb(hdev, urb);
2455
2456 case HCI_SCODATA_PKT:
2457 if (hci_conn_num(hdev, SCO_LINK) < 1)
2458 return -ENODEV;
2459
2460 urb = alloc_isoc_urb(hdev, skb);
2461 if (IS_ERR(urb))
2462 return PTR_ERR(urb);
2463
2464 hdev->stat.sco_tx++;
2465 return submit_tx_urb(hdev, urb);
2466
2467 case HCI_ISODATA_PKT:
2468 urb = alloc_bulk_urb(hdev, skb);
2469 if (IS_ERR(urb))
2470 return PTR_ERR(urb);
2471
2472 return submit_or_queue_tx_urb(hdev, urb);
2473 }
2474
2475 return -EILSEQ;
2476}
2477
2478static int btusb_setup_realtek(struct hci_dev *hdev)
2479{
2480 struct btusb_data *data = hci_get_drvdata(hdev);
2481 int ret;
2482
2483 ret = btrtl_setup_realtek(hdev);
2484
2485 if (btrealtek_test_flag(data->hdev, REALTEK_ALT6_CONTINUOUS_TX_CHIP))
2486 set_bit(BTUSB_ALT6_CONTINUOUS_TX, &data->flags);
2487
2488 return ret;
2489}
2490
2491/* UHW CR mapping */
2492#define MTK_BT_MISC 0x70002510
2493#define MTK_BT_SUBSYS_RST 0x70002610
2494#define MTK_UDMA_INT_STA_BT 0x74000024
2495#define MTK_UDMA_INT_STA_BT1 0x74000308
2496#define MTK_BT_WDT_STATUS 0x740003A0
2497#define MTK_EP_RST_OPT 0x74011890
2498#define MTK_EP_RST_IN_OUT_OPT 0x00010001
2499#define MTK_BT_RST_DONE 0x00000100
2500#define MTK_BT_RESET_WAIT_MS 100
2501#define MTK_BT_RESET_NUM_TRIES 10
2502
2503static void btusb_mtk_wmt_recv(struct urb *urb)
2504{
2505 struct hci_dev *hdev = urb->context;
2506 struct btusb_data *data = hci_get_drvdata(hdev);
2507 struct sk_buff *skb;
2508 int err;
2509
2510 if (urb->status == 0 && urb->actual_length > 0) {
2511 hdev->stat.byte_rx += urb->actual_length;
2512
2513 /* WMT event shouldn't be fragmented and the size should be
2514 * less than HCI_WMT_MAX_EVENT_SIZE.
2515 */
2516 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
2517 if (!skb) {
2518 hdev->stat.err_rx++;
2519 kfree(urb->setup_packet);
2520 return;
2521 }
2522
2523 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2524 skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
2525
2526 /* When someone waits for the WMT event, the skb is being cloned
2527 * and being processed the events from there then.
2528 */
2529 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
2530 data->evt_skb = skb_clone(skb, GFP_ATOMIC);
2531 if (!data->evt_skb) {
2532 kfree_skb(skb);
2533 kfree(urb->setup_packet);
2534 return;
2535 }
2536 }
2537
2538 err = hci_recv_frame(hdev, skb);
2539 if (err < 0) {
2540 kfree_skb(data->evt_skb);
2541 data->evt_skb = NULL;
2542 kfree(urb->setup_packet);
2543 return;
2544 }
2545
2546 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
2547 &data->flags)) {
2548 /* Barrier to sync with other CPUs */
2549 smp_mb__after_atomic();
2550 wake_up_bit(&data->flags,
2551 BTUSB_TX_WAIT_VND_EVT);
2552 }
2553 kfree(urb->setup_packet);
2554 return;
2555 } else if (urb->status == -ENOENT) {
2556 /* Avoid suspend failed when usb_kill_urb */
2557 return;
2558 }
2559
2560 usb_mark_last_busy(data->udev);
2561
2562 /* The URB complete handler is still called with urb->actual_length = 0
2563 * when the event is not available, so we should keep re-submitting
2564 * URB until WMT event returns, Also, It's necessary to wait some time
2565 * between the two consecutive control URBs to relax the target device
2566 * to generate the event. Otherwise, the WMT event cannot return from
2567 * the device successfully.
2568 */
2569 udelay(500);
2570
2571 usb_anchor_urb(urb, &data->ctrl_anchor);
2572 err = usb_submit_urb(urb, GFP_ATOMIC);
2573 if (err < 0) {
2574 kfree(urb->setup_packet);
2575 /* -EPERM: urb is being killed;
2576 * -ENODEV: device got disconnected
2577 */
2578 if (err != -EPERM && err != -ENODEV)
2579 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
2580 urb, -err);
2581 usb_unanchor_urb(urb);
2582 }
2583}
2584
2585static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
2586{
2587 struct btusb_data *data = hci_get_drvdata(hdev);
2588 struct usb_ctrlrequest *dr;
2589 unsigned char *buf;
2590 int err, size = 64;
2591 unsigned int pipe;
2592 struct urb *urb;
2593
2594 urb = usb_alloc_urb(0, GFP_KERNEL);
2595 if (!urb)
2596 return -ENOMEM;
2597
2598 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
2599 if (!dr) {
2600 usb_free_urb(urb);
2601 return -ENOMEM;
2602 }
2603
2604 dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
2605 dr->bRequest = 1;
2606 dr->wIndex = cpu_to_le16(0);
2607 dr->wValue = cpu_to_le16(48);
2608 dr->wLength = cpu_to_le16(size);
2609
2610 buf = kmalloc(size, GFP_KERNEL);
2611 if (!buf) {
2612 kfree(dr);
2613 usb_free_urb(urb);
2614 return -ENOMEM;
2615 }
2616
2617 pipe = usb_rcvctrlpipe(data->udev, 0);
2618
2619 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
2620 buf, size, btusb_mtk_wmt_recv, hdev);
2621
2622 urb->transfer_flags |= URB_FREE_BUFFER;
2623
2624 usb_anchor_urb(urb, &data->ctrl_anchor);
2625 err = usb_submit_urb(urb, GFP_KERNEL);
2626 if (err < 0) {
2627 if (err != -EPERM && err != -ENODEV)
2628 bt_dev_err(hdev, "urb %p submission failed (%d)",
2629 urb, -err);
2630 usb_unanchor_urb(urb);
2631 }
2632
2633 usb_free_urb(urb);
2634
2635 return err;
2636}
2637
2638static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
2639 struct btmtk_hci_wmt_params *wmt_params)
2640{
2641 struct btusb_data *data = hci_get_drvdata(hdev);
2642 struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
2643 u32 hlen, status = BTMTK_WMT_INVALID;
2644 struct btmtk_hci_wmt_evt *wmt_evt;
2645 struct btmtk_hci_wmt_cmd *wc;
2646 struct btmtk_wmt_hdr *hdr;
2647 int err;
2648
2649 /* Send the WMT command and wait until the WMT event returns */
2650 hlen = sizeof(*hdr) + wmt_params->dlen;
2651 if (hlen > 255)
2652 return -EINVAL;
2653
2654 wc = kzalloc(hlen, GFP_KERNEL);
2655 if (!wc)
2656 return -ENOMEM;
2657
2658 hdr = &wc->hdr;
2659 hdr->dir = 1;
2660 hdr->op = wmt_params->op;
2661 hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
2662 hdr->flag = wmt_params->flag;
2663 memcpy(wc->data, wmt_params->data, wmt_params->dlen);
2664
2665 set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2666
2667 /* WMT cmd/event doesn't follow up the generic HCI cmd/event handling,
2668 * it needs constantly polling control pipe until the host received the
2669 * WMT event, thus, we should require to specifically acquire PM counter
2670 * on the USB to prevent the interface from entering auto suspended
2671 * while WMT cmd/event in progress.
2672 */
2673 err = usb_autopm_get_interface(data->intf);
2674 if (err < 0)
2675 goto err_free_wc;
2676
2677 err = __hci_cmd_send(hdev, 0xfc6f, hlen, wc);
2678
2679 if (err < 0) {
2680 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2681 usb_autopm_put_interface(data->intf);
2682 goto err_free_wc;
2683 }
2684
2685 /* Submit control IN URB on demand to process the WMT event */
2686 err = btusb_mtk_submit_wmt_recv_urb(hdev);
2687
2688 usb_autopm_put_interface(data->intf);
2689
2690 if (err < 0)
2691 goto err_free_wc;
2692
2693 /* The vendor specific WMT commands are all answered by a vendor
2694 * specific event and will have the Command Status or Command
2695 * Complete as with usual HCI command flow control.
2696 *
2697 * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
2698 * state to be cleared. The driver specific event receive routine
2699 * will clear that state and with that indicate completion of the
2700 * WMT command.
2701 */
2702 err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
2703 TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
2704 if (err == -EINTR) {
2705 bt_dev_err(hdev, "Execution of wmt command interrupted");
2706 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2707 goto err_free_wc;
2708 }
2709
2710 if (err) {
2711 bt_dev_err(hdev, "Execution of wmt command timed out");
2712 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2713 err = -ETIMEDOUT;
2714 goto err_free_wc;
2715 }
2716
2717 /* Parse and handle the return WMT event */
2718 wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
2719 if (wmt_evt->whdr.op != hdr->op) {
2720 bt_dev_err(hdev, "Wrong op received %d expected %d",
2721 wmt_evt->whdr.op, hdr->op);
2722 err = -EIO;
2723 goto err_free_skb;
2724 }
2725
2726 switch (wmt_evt->whdr.op) {
2727 case BTMTK_WMT_SEMAPHORE:
2728 if (wmt_evt->whdr.flag == 2)
2729 status = BTMTK_WMT_PATCH_UNDONE;
2730 else
2731 status = BTMTK_WMT_PATCH_DONE;
2732 break;
2733 case BTMTK_WMT_FUNC_CTRL:
2734 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
2735 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
2736 status = BTMTK_WMT_ON_DONE;
2737 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
2738 status = BTMTK_WMT_ON_PROGRESS;
2739 else
2740 status = BTMTK_WMT_ON_UNDONE;
2741 break;
2742 case BTMTK_WMT_PATCH_DWNLD:
2743 if (wmt_evt->whdr.flag == 2)
2744 status = BTMTK_WMT_PATCH_DONE;
2745 else if (wmt_evt->whdr.flag == 1)
2746 status = BTMTK_WMT_PATCH_PROGRESS;
2747 else
2748 status = BTMTK_WMT_PATCH_UNDONE;
2749 break;
2750 }
2751
2752 if (wmt_params->status)
2753 *wmt_params->status = status;
2754
2755err_free_skb:
2756 kfree_skb(data->evt_skb);
2757 data->evt_skb = NULL;
2758err_free_wc:
2759 kfree(wc);
2760 return err;
2761}
2762
2763static int btusb_mtk_func_query(struct hci_dev *hdev)
2764{
2765 struct btmtk_hci_wmt_params wmt_params;
2766 int status, err;
2767 u8 param = 0;
2768
2769 /* Query whether the function is enabled */
2770 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2771 wmt_params.flag = 4;
2772 wmt_params.dlen = sizeof(param);
2773 wmt_params.data = ¶m;
2774 wmt_params.status = &status;
2775
2776 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2777 if (err < 0) {
2778 bt_dev_err(hdev, "Failed to query function status (%d)", err);
2779 return err;
2780 }
2781
2782 return status;
2783}
2784
2785static int btusb_mtk_uhw_reg_write(struct btusb_data *data, u32 reg, u32 val)
2786{
2787 struct hci_dev *hdev = data->hdev;
2788 int pipe, err;
2789 void *buf;
2790
2791 buf = kzalloc(4, GFP_KERNEL);
2792 if (!buf)
2793 return -ENOMEM;
2794
2795 put_unaligned_le32(val, buf);
2796
2797 pipe = usb_sndctrlpipe(data->udev, 0);
2798 err = usb_control_msg(data->udev, pipe, 0x02,
2799 0x5E,
2800 reg >> 16, reg & 0xffff,
2801 buf, 4, USB_CTRL_SET_TIMEOUT);
2802 if (err < 0) {
2803 bt_dev_err(hdev, "Failed to write uhw reg(%d)", err);
2804 goto err_free_buf;
2805 }
2806
2807err_free_buf:
2808 kfree(buf);
2809
2810 return err;
2811}
2812
2813static int btusb_mtk_uhw_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2814{
2815 struct hci_dev *hdev = data->hdev;
2816 int pipe, err;
2817 void *buf;
2818
2819 buf = kzalloc(4, GFP_KERNEL);
2820 if (!buf)
2821 return -ENOMEM;
2822
2823 pipe = usb_rcvctrlpipe(data->udev, 0);
2824 err = usb_control_msg(data->udev, pipe, 0x01,
2825 0xDE,
2826 reg >> 16, reg & 0xffff,
2827 buf, 4, USB_CTRL_SET_TIMEOUT);
2828 if (err < 0) {
2829 bt_dev_err(hdev, "Failed to read uhw reg(%d)", err);
2830 goto err_free_buf;
2831 }
2832
2833 *val = get_unaligned_le32(buf);
2834 bt_dev_dbg(hdev, "reg=%x, value=0x%08x", reg, *val);
2835
2836err_free_buf:
2837 kfree(buf);
2838
2839 return err;
2840}
2841
2842static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2843{
2844 int pipe, err, size = sizeof(u32);
2845 void *buf;
2846
2847 buf = kzalloc(size, GFP_KERNEL);
2848 if (!buf)
2849 return -ENOMEM;
2850
2851 pipe = usb_rcvctrlpipe(data->udev, 0);
2852 err = usb_control_msg(data->udev, pipe, 0x63,
2853 USB_TYPE_VENDOR | USB_DIR_IN,
2854 reg >> 16, reg & 0xffff,
2855 buf, size, USB_CTRL_SET_TIMEOUT);
2856 if (err < 0)
2857 goto err_free_buf;
2858
2859 *val = get_unaligned_le32(buf);
2860
2861err_free_buf:
2862 kfree(buf);
2863
2864 return err;
2865}
2866
2867static int btusb_mtk_id_get(struct btusb_data *data, u32 reg, u32 *id)
2868{
2869 return btusb_mtk_reg_read(data, reg, id);
2870}
2871
2872static int btusb_mtk_setup(struct hci_dev *hdev)
2873{
2874 struct btusb_data *data = hci_get_drvdata(hdev);
2875 struct btmtk_hci_wmt_params wmt_params;
2876 ktime_t calltime, delta, rettime;
2877 struct btmtk_tci_sleep tci_sleep;
2878 unsigned long long duration;
2879 struct sk_buff *skb;
2880 const char *fwname;
2881 int err, status;
2882 u32 dev_id;
2883 char fw_bin_name[64];
2884 u32 fw_version = 0;
2885 u8 param;
2886
2887 calltime = ktime_get();
2888
2889 err = btusb_mtk_id_get(data, 0x80000008, &dev_id);
2890 if (err < 0) {
2891 bt_dev_err(hdev, "Failed to get device id (%d)", err);
2892 return err;
2893 }
2894
2895 if (!dev_id) {
2896 err = btusb_mtk_id_get(data, 0x70010200, &dev_id);
2897 if (err < 0) {
2898 bt_dev_err(hdev, "Failed to get device id (%d)", err);
2899 return err;
2900 }
2901 err = btusb_mtk_id_get(data, 0x80021004, &fw_version);
2902 if (err < 0) {
2903 bt_dev_err(hdev, "Failed to get fw version (%d)", err);
2904 return err;
2905 }
2906 }
2907
2908 switch (dev_id) {
2909 case 0x7663:
2910 fwname = FIRMWARE_MT7663;
2911 break;
2912 case 0x7668:
2913 fwname = FIRMWARE_MT7668;
2914 break;
2915 case 0x7922:
2916 case 0x7961:
2917 snprintf(fw_bin_name, sizeof(fw_bin_name),
2918 "mediatek/BT_RAM_CODE_MT%04x_1_%x_hdr.bin",
2919 dev_id & 0xffff, (fw_version & 0xff) + 1);
2920 err = btmtk_setup_firmware_79xx(hdev, fw_bin_name,
2921 btusb_mtk_hci_wmt_sync);
2922 if (err < 0) {
2923 bt_dev_err(hdev, "Failed to set up firmware (%d)", err);
2924 return err;
2925 }
2926
2927 /* It's Device EndPoint Reset Option Register */
2928 btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT);
2929
2930 /* Enable Bluetooth protocol */
2931 param = 1;
2932 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2933 wmt_params.flag = 0;
2934 wmt_params.dlen = sizeof(param);
2935 wmt_params.data = ¶m;
2936 wmt_params.status = NULL;
2937
2938 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2939 if (err < 0) {
2940 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
2941 return err;
2942 }
2943
2944 hci_set_msft_opcode(hdev, 0xFD30);
2945 hci_set_aosp_capable(hdev);
2946 goto done;
2947 default:
2948 bt_dev_err(hdev, "Unsupported hardware variant (%08x)",
2949 dev_id);
2950 return -ENODEV;
2951 }
2952
2953 /* Query whether the firmware is already download */
2954 wmt_params.op = BTMTK_WMT_SEMAPHORE;
2955 wmt_params.flag = 1;
2956 wmt_params.dlen = 0;
2957 wmt_params.data = NULL;
2958 wmt_params.status = &status;
2959
2960 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2961 if (err < 0) {
2962 bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
2963 return err;
2964 }
2965
2966 if (status == BTMTK_WMT_PATCH_DONE) {
2967 bt_dev_info(hdev, "firmware already downloaded");
2968 goto ignore_setup_fw;
2969 }
2970
2971 /* Setup a firmware which the device definitely requires */
2972 err = btmtk_setup_firmware(hdev, fwname,
2973 btusb_mtk_hci_wmt_sync);
2974 if (err < 0)
2975 return err;
2976
2977ignore_setup_fw:
2978 err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
2979 status < 0 || status != BTMTK_WMT_ON_PROGRESS,
2980 2000, 5000000);
2981 /* -ETIMEDOUT happens */
2982 if (err < 0)
2983 return err;
2984
2985 /* The other errors happen in btusb_mtk_func_query */
2986 if (status < 0)
2987 return status;
2988
2989 if (status == BTMTK_WMT_ON_DONE) {
2990 bt_dev_info(hdev, "function already on");
2991 goto ignore_func_on;
2992 }
2993
2994 /* Enable Bluetooth protocol */
2995 param = 1;
2996 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2997 wmt_params.flag = 0;
2998 wmt_params.dlen = sizeof(param);
2999 wmt_params.data = ¶m;
3000 wmt_params.status = NULL;
3001
3002 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3003 if (err < 0) {
3004 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3005 return err;
3006 }
3007
3008ignore_func_on:
3009 /* Apply the low power environment setup */
3010 tci_sleep.mode = 0x5;
3011 tci_sleep.duration = cpu_to_le16(0x640);
3012 tci_sleep.host_duration = cpu_to_le16(0x640);
3013 tci_sleep.host_wakeup_pin = 0;
3014 tci_sleep.time_compensation = 0;
3015
3016 skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
3017 HCI_INIT_TIMEOUT);
3018 if (IS_ERR(skb)) {
3019 err = PTR_ERR(skb);
3020 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
3021 return err;
3022 }
3023 kfree_skb(skb);
3024
3025done:
3026 rettime = ktime_get();
3027 delta = ktime_sub(rettime, calltime);
3028 duration = (unsigned long long)ktime_to_ns(delta) >> 10;
3029
3030 bt_dev_info(hdev, "Device setup in %llu usecs", duration);
3031
3032 return 0;
3033}
3034
3035static int btusb_mtk_shutdown(struct hci_dev *hdev)
3036{
3037 struct btmtk_hci_wmt_params wmt_params;
3038 u8 param = 0;
3039 int err;
3040
3041 /* Disable the device */
3042 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3043 wmt_params.flag = 0;
3044 wmt_params.dlen = sizeof(param);
3045 wmt_params.data = ¶m;
3046 wmt_params.status = NULL;
3047
3048 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3049 if (err < 0) {
3050 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3051 return err;
3052 }
3053
3054 return 0;
3055}
3056
3057static void btusb_mtk_cmd_timeout(struct hci_dev *hdev)
3058{
3059 struct btusb_data *data = hci_get_drvdata(hdev);
3060 u32 val;
3061 int err, retry = 0;
3062
3063 /* It's MediaTek specific bluetooth reset mechanism via USB */
3064 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
3065 bt_dev_err(hdev, "last reset failed? Not resetting again");
3066 return;
3067 }
3068
3069 err = usb_autopm_get_interface(data->intf);
3070 if (err < 0)
3071 return;
3072
3073 btusb_stop_traffic(data);
3074 usb_kill_anchored_urbs(&data->tx_anchor);
3075
3076 /* It's Device EndPoint Reset Option Register */
3077 bt_dev_dbg(hdev, "Initiating reset mechanism via uhw");
3078 btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT);
3079 btusb_mtk_uhw_reg_read(data, MTK_BT_WDT_STATUS, &val);
3080
3081 /* Reset the bluetooth chip via USB interface. */
3082 btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 1);
3083 btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT, 0x000000FF);
3084 btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT, &val);
3085 btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT1, 0x000000FF);
3086 btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT1, &val);
3087 /* MT7921 need to delay 20ms between toggle reset bit */
3088 msleep(20);
3089 btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 0);
3090 btusb_mtk_uhw_reg_read(data, MTK_BT_SUBSYS_RST, &val);
3091
3092 /* Poll the register until reset is completed */
3093 do {
3094 btusb_mtk_uhw_reg_read(data, MTK_BT_MISC, &val);
3095 if (val & MTK_BT_RST_DONE) {
3096 bt_dev_dbg(hdev, "Bluetooth Reset Successfully");
3097 break;
3098 }
3099
3100 bt_dev_dbg(hdev, "Polling Bluetooth Reset CR");
3101 retry++;
3102 msleep(MTK_BT_RESET_WAIT_MS);
3103 } while (retry < MTK_BT_RESET_NUM_TRIES);
3104
3105 btusb_mtk_id_get(data, 0x70010200, &val);
3106 if (!val)
3107 bt_dev_err(hdev, "Can't get device id, subsys reset fail.");
3108
3109 usb_queue_reset_device(data->intf);
3110
3111 clear_bit(BTUSB_HW_RESET_ACTIVE, &data->flags);
3112}
3113
3114static int btusb_recv_acl_mtk(struct hci_dev *hdev, struct sk_buff *skb)
3115{
3116 struct btusb_data *data = hci_get_drvdata(hdev);
3117 u16 handle = le16_to_cpu(hci_acl_hdr(skb)->handle);
3118
3119 switch (handle) {
3120 case 0xfc6f: /* Firmware dump from device */
3121 /* When the firmware hangs, the device can no longer
3122 * suspend and thus disable auto-suspend.
3123 */
3124 usb_disable_autosuspend(data->udev);
3125 fallthrough;
3126 case 0x05ff: /* Firmware debug logging 1 */
3127 case 0x05fe: /* Firmware debug logging 2 */
3128 return hci_recv_diag(hdev, skb);
3129 }
3130
3131 return hci_recv_frame(hdev, skb);
3132}
3133
3134#ifdef CONFIG_PM
3135/* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
3136static int marvell_config_oob_wake(struct hci_dev *hdev)
3137{
3138 struct sk_buff *skb;
3139 struct btusb_data *data = hci_get_drvdata(hdev);
3140 struct device *dev = &data->udev->dev;
3141 u16 pin, gap, opcode;
3142 int ret;
3143 u8 cmd[5];
3144
3145 /* Move on if no wakeup pin specified */
3146 if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
3147 of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
3148 return 0;
3149
3150 /* Vendor specific command to configure a GPIO as wake-up pin */
3151 opcode = hci_opcode_pack(0x3F, 0x59);
3152 cmd[0] = opcode & 0xFF;
3153 cmd[1] = opcode >> 8;
3154 cmd[2] = 2; /* length of parameters that follow */
3155 cmd[3] = pin;
3156 cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
3157
3158 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
3159 if (!skb) {
3160 bt_dev_err(hdev, "%s: No memory", __func__);
3161 return -ENOMEM;
3162 }
3163
3164 skb_put_data(skb, cmd, sizeof(cmd));
3165 hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
3166
3167 ret = btusb_send_frame(hdev, skb);
3168 if (ret) {
3169 bt_dev_err(hdev, "%s: configuration failed", __func__);
3170 kfree_skb(skb);
3171 return ret;
3172 }
3173
3174 return 0;
3175}
3176#endif
3177
3178static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
3179 const bdaddr_t *bdaddr)
3180{
3181 struct sk_buff *skb;
3182 u8 buf[8];
3183 long ret;
3184
3185 buf[0] = 0xfe;
3186 buf[1] = sizeof(bdaddr_t);
3187 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
3188
3189 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3190 if (IS_ERR(skb)) {
3191 ret = PTR_ERR(skb);
3192 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
3193 ret);
3194 return ret;
3195 }
3196 kfree_skb(skb);
3197
3198 return 0;
3199}
3200
3201static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3202 const bdaddr_t *bdaddr)
3203{
3204 struct sk_buff *skb;
3205 u8 buf[10];
3206 long ret;
3207
3208 buf[0] = 0x01;
3209 buf[1] = 0x01;
3210 buf[2] = 0x00;
3211 buf[3] = sizeof(bdaddr_t);
3212 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3213
3214 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3215 if (IS_ERR(skb)) {
3216 ret = PTR_ERR(skb);
3217 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3218 return ret;
3219 }
3220 kfree_skb(skb);
3221
3222 return 0;
3223}
3224
3225static int btusb_set_bdaddr_wcn6855(struct hci_dev *hdev,
3226 const bdaddr_t *bdaddr)
3227{
3228 struct sk_buff *skb;
3229 u8 buf[6];
3230 long ret;
3231
3232 memcpy(buf, bdaddr, sizeof(bdaddr_t));
3233
3234 skb = __hci_cmd_sync_ev(hdev, 0xfc14, sizeof(buf), buf,
3235 HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
3236 if (IS_ERR(skb)) {
3237 ret = PTR_ERR(skb);
3238 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3239 return ret;
3240 }
3241 kfree_skb(skb);
3242
3243 return 0;
3244}
3245
3246#define QCA_DFU_PACKET_LEN 4096
3247
3248#define QCA_GET_TARGET_VERSION 0x09
3249#define QCA_CHECK_STATUS 0x05
3250#define QCA_DFU_DOWNLOAD 0x01
3251
3252#define QCA_SYSCFG_UPDATED 0x40
3253#define QCA_PATCH_UPDATED 0x80
3254#define QCA_DFU_TIMEOUT 3000
3255#define QCA_FLAG_MULTI_NVM 0x80
3256#define QCA_BT_RESET_WAIT_MS 100
3257
3258#define WCN6855_2_0_RAM_VERSION_GF 0x400c1200
3259#define WCN6855_2_1_RAM_VERSION_GF 0x400c1211
3260
3261struct qca_version {
3262 __le32 rom_version;
3263 __le32 patch_version;
3264 __le32 ram_version;
3265 __u8 chip_id;
3266 __u8 platform_id;
3267 __le16 flag;
3268 __u8 reserved[4];
3269} __packed;
3270
3271struct qca_rampatch_version {
3272 __le16 rom_version_high;
3273 __le16 rom_version_low;
3274 __le16 patch_version;
3275} __packed;
3276
3277struct qca_device_info {
3278 u32 rom_version;
3279 u8 rampatch_hdr; /* length of header in rampatch */
3280 u8 nvm_hdr; /* length of header in NVM */
3281 u8 ver_offset; /* offset of version structure in rampatch */
3282};
3283
3284static const struct qca_device_info qca_devices_table[] = {
3285 { 0x00000100, 20, 4, 8 }, /* Rome 1.0 */
3286 { 0x00000101, 20, 4, 8 }, /* Rome 1.1 */
3287 { 0x00000200, 28, 4, 16 }, /* Rome 2.0 */
3288 { 0x00000201, 28, 4, 16 }, /* Rome 2.1 */
3289 { 0x00000300, 28, 4, 16 }, /* Rome 3.0 */
3290 { 0x00000302, 28, 4, 16 }, /* Rome 3.2 */
3291 { 0x00130100, 40, 4, 16 }, /* WCN6855 1.0 */
3292 { 0x00130200, 40, 4, 16 }, /* WCN6855 2.0 */
3293 { 0x00130201, 40, 4, 16 }, /* WCN6855 2.1 */
3294 { 0x00190200, 40, 4, 16 }, /* WCN785x 2.0 */
3295};
3296
3297static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
3298 void *data, u16 size)
3299{
3300 int pipe, err;
3301 u8 *buf;
3302
3303 buf = kmalloc(size, GFP_KERNEL);
3304 if (!buf)
3305 return -ENOMEM;
3306
3307 /* Found some of USB hosts have IOT issues with ours so that we should
3308 * not wait until HCI layer is ready.
3309 */
3310 pipe = usb_rcvctrlpipe(udev, 0);
3311 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
3312 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3313 if (err < 0) {
3314 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
3315 goto done;
3316 }
3317
3318 memcpy(data, buf, size);
3319
3320done:
3321 kfree(buf);
3322
3323 return err;
3324}
3325
3326static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
3327 const struct firmware *firmware,
3328 size_t hdr_size)
3329{
3330 struct btusb_data *btdata = hci_get_drvdata(hdev);
3331 struct usb_device *udev = btdata->udev;
3332 size_t count, size, sent = 0;
3333 int pipe, len, err;
3334 u8 *buf;
3335
3336 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
3337 if (!buf)
3338 return -ENOMEM;
3339
3340 count = firmware->size;
3341
3342 size = min_t(size_t, count, hdr_size);
3343 memcpy(buf, firmware->data, size);
3344
3345 /* USB patches should go down to controller through USB path
3346 * because binary format fits to go down through USB channel.
3347 * USB control path is for patching headers and USB bulk is for
3348 * patch body.
3349 */
3350 pipe = usb_sndctrlpipe(udev, 0);
3351 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
3352 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3353 if (err < 0) {
3354 bt_dev_err(hdev, "Failed to send headers (%d)", err);
3355 goto done;
3356 }
3357
3358 sent += size;
3359 count -= size;
3360
3361 /* ep2 need time to switch from function acl to function dfu,
3362 * so we add 20ms delay here.
3363 */
3364 msleep(20);
3365
3366 while (count) {
3367 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
3368
3369 memcpy(buf, firmware->data + sent, size);
3370
3371 pipe = usb_sndbulkpipe(udev, 0x02);
3372 err = usb_bulk_msg(udev, pipe, buf, size, &len,
3373 QCA_DFU_TIMEOUT);
3374 if (err < 0) {
3375 bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
3376 sent, firmware->size, err);
3377 break;
3378 }
3379
3380 if (size != len) {
3381 bt_dev_err(hdev, "Failed to get bulk buffer");
3382 err = -EILSEQ;
3383 break;
3384 }
3385
3386 sent += size;
3387 count -= size;
3388 }
3389
3390done:
3391 kfree(buf);
3392 return err;
3393}
3394
3395static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
3396 struct qca_version *ver,
3397 const struct qca_device_info *info)
3398{
3399 struct qca_rampatch_version *rver;
3400 const struct firmware *fw;
3401 u32 ver_rom, ver_patch, rver_rom;
3402 u16 rver_rom_low, rver_rom_high, rver_patch;
3403 char fwname[64];
3404 int err;
3405
3406 ver_rom = le32_to_cpu(ver->rom_version);
3407 ver_patch = le32_to_cpu(ver->patch_version);
3408
3409 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
3410
3411 err = request_firmware(&fw, fwname, &hdev->dev);
3412 if (err) {
3413 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
3414 fwname, err);
3415 return err;
3416 }
3417
3418 bt_dev_info(hdev, "using rampatch file: %s", fwname);
3419
3420 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
3421 rver_rom_low = le16_to_cpu(rver->rom_version_low);
3422 rver_patch = le16_to_cpu(rver->patch_version);
3423
3424 if (ver_rom & ~0xffffU) {
3425 rver_rom_high = le16_to_cpu(rver->rom_version_high);
3426 rver_rom = rver_rom_high << 16 | rver_rom_low;
3427 } else {
3428 rver_rom = rver_rom_low;
3429 }
3430
3431 bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
3432 "firmware rome 0x%x build 0x%x",
3433 rver_rom, rver_patch, ver_rom, ver_patch);
3434
3435 if (rver_rom != ver_rom || rver_patch <= ver_patch) {
3436 bt_dev_err(hdev, "rampatch file version did not match with firmware");
3437 err = -EINVAL;
3438 goto done;
3439 }
3440
3441 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
3442
3443done:
3444 release_firmware(fw);
3445
3446 return err;
3447}
3448
3449static void btusb_generate_qca_nvm_name(char *fwname, size_t max_size,
3450 const struct qca_version *ver)
3451{
3452 u32 rom_version = le32_to_cpu(ver->rom_version);
3453 u16 flag = le16_to_cpu(ver->flag);
3454
3455 if (((flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) {
3456 /* The board_id should be split into two bytes
3457 * The 1st byte is chip ID, and the 2nd byte is platform ID
3458 * For example, board ID 0x010A, 0x01 is platform ID. 0x0A is chip ID
3459 * we have several platforms, and platform IDs are continuously added
3460 * Platform ID:
3461 * 0x00 is for Mobile
3462 * 0x01 is for X86
3463 * 0x02 is for Automotive
3464 * 0x03 is for Consumer electronic
3465 */
3466 u16 board_id = (ver->chip_id << 8) + ver->platform_id;
3467 const char *variant;
3468
3469 switch (le32_to_cpu(ver->ram_version)) {
3470 case WCN6855_2_0_RAM_VERSION_GF:
3471 case WCN6855_2_1_RAM_VERSION_GF:
3472 variant = "_gf";
3473 break;
3474 default:
3475 variant = "";
3476 break;
3477 }
3478
3479 if (board_id == 0) {
3480 snprintf(fwname, max_size, "qca/nvm_usb_%08x%s.bin",
3481 rom_version, variant);
3482 } else {
3483 snprintf(fwname, max_size, "qca/nvm_usb_%08x%s_%04x.bin",
3484 rom_version, variant, board_id);
3485 }
3486 } else {
3487 snprintf(fwname, max_size, "qca/nvm_usb_%08x.bin",
3488 rom_version);
3489 }
3490
3491}
3492
3493static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
3494 struct qca_version *ver,
3495 const struct qca_device_info *info)
3496{
3497 const struct firmware *fw;
3498 char fwname[64];
3499 int err;
3500
3501 btusb_generate_qca_nvm_name(fwname, sizeof(fwname), ver);
3502
3503 err = request_firmware(&fw, fwname, &hdev->dev);
3504 if (err) {
3505 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
3506 fwname, err);
3507 return err;
3508 }
3509
3510 bt_dev_info(hdev, "using NVM file: %s", fwname);
3511
3512 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
3513
3514 release_firmware(fw);
3515
3516 return err;
3517}
3518
3519/* identify the ROM version and check whether patches are needed */
3520static bool btusb_qca_need_patch(struct usb_device *udev)
3521{
3522 struct qca_version ver;
3523
3524 if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3525 sizeof(ver)) < 0)
3526 return false;
3527 /* only low ROM versions need patches */
3528 return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
3529}
3530
3531static int btusb_setup_qca(struct hci_dev *hdev)
3532{
3533 struct btusb_data *btdata = hci_get_drvdata(hdev);
3534 struct usb_device *udev = btdata->udev;
3535 const struct qca_device_info *info = NULL;
3536 struct qca_version ver;
3537 u32 ver_rom;
3538 u8 status;
3539 int i, err;
3540
3541 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3542 sizeof(ver));
3543 if (err < 0)
3544 return err;
3545
3546 ver_rom = le32_to_cpu(ver.rom_version);
3547
3548 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
3549 if (ver_rom == qca_devices_table[i].rom_version)
3550 info = &qca_devices_table[i];
3551 }
3552 if (!info) {
3553 /* If the rom_version is not matched in the qca_devices_table
3554 * and the high ROM version is not zero, we assume this chip no
3555 * need to load the rampatch and nvm.
3556 */
3557 if (ver_rom & ~0xffffU)
3558 return 0;
3559
3560 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
3561 return -ENODEV;
3562 }
3563
3564 err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
3565 sizeof(status));
3566 if (err < 0)
3567 return err;
3568
3569 if (!(status & QCA_PATCH_UPDATED)) {
3570 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3571 if (err < 0)
3572 return err;
3573 }
3574
3575 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3576 sizeof(ver));
3577 if (err < 0)
3578 return err;
3579
3580 if (!(status & QCA_SYSCFG_UPDATED)) {
3581 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3582 if (err < 0)
3583 return err;
3584
3585 /* WCN6855 2.1 and later will reset to apply firmware downloaded here, so
3586 * wait ~100ms for reset Done then go ahead, otherwise, it maybe
3587 * cause potential enable failure.
3588 */
3589 if (info->rom_version >= 0x00130201)
3590 msleep(QCA_BT_RESET_WAIT_MS);
3591 }
3592
3593 /* Mark HCI_OP_ENHANCED_SETUP_SYNC_CONN as broken as it doesn't seem to
3594 * work with the likes of HSP/HFP mSBC.
3595 */
3596 set_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &hdev->quirks);
3597
3598 return 0;
3599}
3600
3601static inline int __set_diag_interface(struct hci_dev *hdev)
3602{
3603 struct btusb_data *data = hci_get_drvdata(hdev);
3604 struct usb_interface *intf = data->diag;
3605 int i;
3606
3607 if (!data->diag)
3608 return -ENODEV;
3609
3610 data->diag_tx_ep = NULL;
3611 data->diag_rx_ep = NULL;
3612
3613 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3614 struct usb_endpoint_descriptor *ep_desc;
3615
3616 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3617
3618 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3619 data->diag_tx_ep = ep_desc;
3620 continue;
3621 }
3622
3623 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3624 data->diag_rx_ep = ep_desc;
3625 continue;
3626 }
3627 }
3628
3629 if (!data->diag_tx_ep || !data->diag_rx_ep) {
3630 bt_dev_err(hdev, "invalid diagnostic descriptors");
3631 return -ENODEV;
3632 }
3633
3634 return 0;
3635}
3636
3637static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
3638{
3639 struct btusb_data *data = hci_get_drvdata(hdev);
3640 struct sk_buff *skb;
3641 struct urb *urb;
3642 unsigned int pipe;
3643
3644 if (!data->diag_tx_ep)
3645 return ERR_PTR(-ENODEV);
3646
3647 urb = usb_alloc_urb(0, GFP_KERNEL);
3648 if (!urb)
3649 return ERR_PTR(-ENOMEM);
3650
3651 skb = bt_skb_alloc(2, GFP_KERNEL);
3652 if (!skb) {
3653 usb_free_urb(urb);
3654 return ERR_PTR(-ENOMEM);
3655 }
3656
3657 skb_put_u8(skb, 0xf0);
3658 skb_put_u8(skb, enable);
3659
3660 pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
3661
3662 usb_fill_bulk_urb(urb, data->udev, pipe,
3663 skb->data, skb->len, btusb_tx_complete, skb);
3664
3665 skb->dev = (void *)hdev;
3666
3667 return urb;
3668}
3669
3670static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
3671{
3672 struct btusb_data *data = hci_get_drvdata(hdev);
3673 struct urb *urb;
3674
3675 if (!data->diag)
3676 return -ENODEV;
3677
3678 if (!test_bit(HCI_RUNNING, &hdev->flags))
3679 return -ENETDOWN;
3680
3681 urb = alloc_diag_urb(hdev, enable);
3682 if (IS_ERR(urb))
3683 return PTR_ERR(urb);
3684
3685 return submit_or_queue_tx_urb(hdev, urb);
3686}
3687
3688#ifdef CONFIG_PM
3689static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
3690{
3691 struct btusb_data *data = priv;
3692
3693 pm_wakeup_event(&data->udev->dev, 0);
3694 pm_system_wakeup();
3695
3696 /* Disable only if not already disabled (keep it balanced) */
3697 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3698 disable_irq_nosync(irq);
3699 disable_irq_wake(irq);
3700 }
3701 return IRQ_HANDLED;
3702}
3703
3704static const struct of_device_id btusb_match_table[] = {
3705 { .compatible = "usb1286,204e" },
3706 { .compatible = "usbcf3,e300" }, /* QCA6174A */
3707 { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
3708 { }
3709};
3710MODULE_DEVICE_TABLE(of, btusb_match_table);
3711
3712/* Use an oob wakeup pin? */
3713static int btusb_config_oob_wake(struct hci_dev *hdev)
3714{
3715 struct btusb_data *data = hci_get_drvdata(hdev);
3716 struct device *dev = &data->udev->dev;
3717 int irq, ret;
3718
3719 clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3720
3721 if (!of_match_device(btusb_match_table, dev))
3722 return 0;
3723
3724 /* Move on if no IRQ specified */
3725 irq = of_irq_get_byname(dev->of_node, "wakeup");
3726 if (irq <= 0) {
3727 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
3728 return 0;
3729 }
3730
3731 irq_set_status_flags(irq, IRQ_NOAUTOEN);
3732 ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
3733 0, "OOB Wake-on-BT", data);
3734 if (ret) {
3735 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
3736 return ret;
3737 }
3738
3739 ret = device_init_wakeup(dev, true);
3740 if (ret) {
3741 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
3742 return ret;
3743 }
3744
3745 data->oob_wake_irq = irq;
3746 bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
3747 return 0;
3748}
3749#endif
3750
3751static void btusb_check_needs_reset_resume(struct usb_interface *intf)
3752{
3753 if (dmi_check_system(btusb_needs_reset_resume_table))
3754 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3755}
3756
3757static bool btusb_wakeup(struct hci_dev *hdev)
3758{
3759 struct btusb_data *data = hci_get_drvdata(hdev);
3760
3761 return device_may_wakeup(&data->udev->dev);
3762}
3763
3764static int btusb_shutdown_qca(struct hci_dev *hdev)
3765{
3766 struct sk_buff *skb;
3767
3768 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
3769 if (IS_ERR(skb)) {
3770 bt_dev_err(hdev, "HCI reset during shutdown failed");
3771 return PTR_ERR(skb);
3772 }
3773 kfree_skb(skb);
3774
3775 return 0;
3776}
3777
3778static ssize_t force_poll_sync_read(struct file *file, char __user *user_buf,
3779 size_t count, loff_t *ppos)
3780{
3781 struct btusb_data *data = file->private_data;
3782 char buf[3];
3783
3784 buf[0] = data->poll_sync ? 'Y' : 'N';
3785 buf[1] = '\n';
3786 buf[2] = '\0';
3787 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
3788}
3789
3790static ssize_t force_poll_sync_write(struct file *file,
3791 const char __user *user_buf,
3792 size_t count, loff_t *ppos)
3793{
3794 struct btusb_data *data = file->private_data;
3795 bool enable;
3796 int err;
3797
3798 err = kstrtobool_from_user(user_buf, count, &enable);
3799 if (err)
3800 return err;
3801
3802 /* Only allow changes while the adapter is down */
3803 if (test_bit(HCI_UP, &data->hdev->flags))
3804 return -EPERM;
3805
3806 if (data->poll_sync == enable)
3807 return -EALREADY;
3808
3809 data->poll_sync = enable;
3810
3811 return count;
3812}
3813
3814static const struct file_operations force_poll_sync_fops = {
3815 .open = simple_open,
3816 .read = force_poll_sync_read,
3817 .write = force_poll_sync_write,
3818 .llseek = default_llseek,
3819};
3820
3821static int btusb_probe(struct usb_interface *intf,
3822 const struct usb_device_id *id)
3823{
3824 struct usb_endpoint_descriptor *ep_desc;
3825 struct gpio_desc *reset_gpio;
3826 struct btusb_data *data;
3827 struct hci_dev *hdev;
3828 unsigned ifnum_base;
3829 int i, err, priv_size;
3830
3831 BT_DBG("intf %p id %p", intf, id);
3832
3833 /* interface numbers are hardcoded in the spec */
3834 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
3835 if (!(id->driver_info & BTUSB_IFNUM_2))
3836 return -ENODEV;
3837 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
3838 return -ENODEV;
3839 }
3840
3841 ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
3842
3843 if (!id->driver_info) {
3844 const struct usb_device_id *match;
3845
3846 match = usb_match_id(intf, blacklist_table);
3847 if (match)
3848 id = match;
3849 }
3850
3851 if (id->driver_info == BTUSB_IGNORE)
3852 return -ENODEV;
3853
3854 if (id->driver_info & BTUSB_ATH3012) {
3855 struct usb_device *udev = interface_to_usbdev(intf);
3856
3857 /* Old firmware would otherwise let ath3k driver load
3858 * patch and sysconfig files
3859 */
3860 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
3861 !btusb_qca_need_patch(udev))
3862 return -ENODEV;
3863 }
3864
3865 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
3866 if (!data)
3867 return -ENOMEM;
3868
3869 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3870 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3871
3872 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
3873 data->intr_ep = ep_desc;
3874 continue;
3875 }
3876
3877 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3878 data->bulk_tx_ep = ep_desc;
3879 continue;
3880 }
3881
3882 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3883 data->bulk_rx_ep = ep_desc;
3884 continue;
3885 }
3886 }
3887
3888 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
3889 return -ENODEV;
3890
3891 if (id->driver_info & BTUSB_AMP) {
3892 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
3893 data->cmdreq = 0x2b;
3894 } else {
3895 data->cmdreq_type = USB_TYPE_CLASS;
3896 data->cmdreq = 0x00;
3897 }
3898
3899 data->udev = interface_to_usbdev(intf);
3900 data->intf = intf;
3901
3902 INIT_WORK(&data->work, btusb_work);
3903 INIT_WORK(&data->waker, btusb_waker);
3904 INIT_DELAYED_WORK(&data->rx_work, btusb_rx_work);
3905
3906 skb_queue_head_init(&data->acl_q);
3907
3908 init_usb_anchor(&data->deferred);
3909 init_usb_anchor(&data->tx_anchor);
3910 spin_lock_init(&data->txlock);
3911
3912 init_usb_anchor(&data->intr_anchor);
3913 init_usb_anchor(&data->bulk_anchor);
3914 init_usb_anchor(&data->isoc_anchor);
3915 init_usb_anchor(&data->diag_anchor);
3916 init_usb_anchor(&data->ctrl_anchor);
3917 spin_lock_init(&data->rxlock);
3918
3919 priv_size = 0;
3920
3921 data->recv_event = hci_recv_frame;
3922 data->recv_bulk = btusb_recv_bulk;
3923
3924 if (id->driver_info & BTUSB_INTEL_COMBINED) {
3925 /* Allocate extra space for Intel device */
3926 priv_size += sizeof(struct btintel_data);
3927
3928 /* Override the rx handlers */
3929 data->recv_event = btusb_recv_event_intel;
3930 data->recv_bulk = btusb_recv_bulk_intel;
3931 } else if (id->driver_info & BTUSB_REALTEK) {
3932 /* Allocate extra space for Realtek device */
3933 priv_size += sizeof(struct btrealtek_data);
3934 }
3935
3936 data->recv_acl = hci_recv_frame;
3937
3938 hdev = hci_alloc_dev_priv(priv_size);
3939 if (!hdev)
3940 return -ENOMEM;
3941
3942 hdev->bus = HCI_USB;
3943 hci_set_drvdata(hdev, data);
3944
3945 if (id->driver_info & BTUSB_AMP)
3946 hdev->dev_type = HCI_AMP;
3947 else
3948 hdev->dev_type = HCI_PRIMARY;
3949
3950 data->hdev = hdev;
3951
3952 SET_HCIDEV_DEV(hdev, &intf->dev);
3953
3954 reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
3955 GPIOD_OUT_LOW);
3956 if (IS_ERR(reset_gpio)) {
3957 err = PTR_ERR(reset_gpio);
3958 goto out_free_dev;
3959 } else if (reset_gpio) {
3960 data->reset_gpio = reset_gpio;
3961 }
3962
3963 hdev->open = btusb_open;
3964 hdev->close = btusb_close;
3965 hdev->flush = btusb_flush;
3966 hdev->send = btusb_send_frame;
3967 hdev->notify = btusb_notify;
3968 hdev->wakeup = btusb_wakeup;
3969
3970#ifdef CONFIG_PM
3971 err = btusb_config_oob_wake(hdev);
3972 if (err)
3973 goto out_free_dev;
3974
3975 /* Marvell devices may need a specific chip configuration */
3976 if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
3977 err = marvell_config_oob_wake(hdev);
3978 if (err)
3979 goto out_free_dev;
3980 }
3981#endif
3982 if (id->driver_info & BTUSB_CW6622)
3983 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3984
3985 if (id->driver_info & BTUSB_BCM2045)
3986 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3987
3988 if (id->driver_info & BTUSB_BCM92035)
3989 hdev->setup = btusb_setup_bcm92035;
3990
3991 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
3992 (id->driver_info & BTUSB_BCM_PATCHRAM)) {
3993 hdev->manufacturer = 15;
3994 hdev->setup = btbcm_setup_patchram;
3995 hdev->set_diag = btusb_bcm_set_diag;
3996 hdev->set_bdaddr = btbcm_set_bdaddr;
3997
3998 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3999 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4000 }
4001
4002 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
4003 (id->driver_info & BTUSB_BCM_APPLE)) {
4004 hdev->manufacturer = 15;
4005 hdev->setup = btbcm_setup_apple;
4006 hdev->set_diag = btusb_bcm_set_diag;
4007
4008 /* Broadcom LM_DIAG Interface numbers are hardcoded */
4009 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4010 }
4011
4012 /* Combined Intel Device setup to support multiple setup routine */
4013 if (id->driver_info & BTUSB_INTEL_COMBINED) {
4014 err = btintel_configure_setup(hdev);
4015 if (err)
4016 goto out_free_dev;
4017
4018 /* Transport specific configuration */
4019 hdev->send = btusb_send_frame_intel;
4020 hdev->cmd_timeout = btusb_intel_cmd_timeout;
4021
4022 if (id->driver_info & BTUSB_INTEL_NO_WBS_SUPPORT)
4023 btintel_set_flag(hdev, INTEL_ROM_LEGACY_NO_WBS_SUPPORT);
4024
4025 if (id->driver_info & BTUSB_INTEL_BROKEN_INITIAL_NCMD)
4026 btintel_set_flag(hdev, INTEL_BROKEN_INITIAL_NCMD);
4027
4028 if (id->driver_info & BTUSB_INTEL_BROKEN_SHUTDOWN_LED)
4029 btintel_set_flag(hdev, INTEL_BROKEN_SHUTDOWN_LED);
4030 }
4031
4032 if (id->driver_info & BTUSB_MARVELL)
4033 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
4034
4035 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) &&
4036 (id->driver_info & BTUSB_MEDIATEK)) {
4037 hdev->setup = btusb_mtk_setup;
4038 hdev->shutdown = btusb_mtk_shutdown;
4039 hdev->manufacturer = 70;
4040 hdev->cmd_timeout = btusb_mtk_cmd_timeout;
4041 hdev->set_bdaddr = btmtk_set_bdaddr;
4042 set_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &hdev->quirks);
4043 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
4044 data->recv_acl = btusb_recv_acl_mtk;
4045 }
4046
4047 if (id->driver_info & BTUSB_SWAVE) {
4048 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
4049 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
4050 }
4051
4052 if (id->driver_info & BTUSB_INTEL_BOOT) {
4053 hdev->manufacturer = 2;
4054 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4055 }
4056
4057 if (id->driver_info & BTUSB_ATH3012) {
4058 data->setup_on_usb = btusb_setup_qca;
4059 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4060 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4061 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4062 }
4063
4064 if (id->driver_info & BTUSB_QCA_ROME) {
4065 data->setup_on_usb = btusb_setup_qca;
4066 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4067 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4068 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4069 btusb_check_needs_reset_resume(intf);
4070 }
4071
4072 if (id->driver_info & BTUSB_QCA_WCN6855) {
4073 data->setup_on_usb = btusb_setup_qca;
4074 hdev->shutdown = btusb_shutdown_qca;
4075 hdev->set_bdaddr = btusb_set_bdaddr_wcn6855;
4076 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4077 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4078 hci_set_msft_opcode(hdev, 0xFD70);
4079 }
4080
4081 if (id->driver_info & BTUSB_AMP) {
4082 /* AMP controllers do not support SCO packets */
4083 data->isoc = NULL;
4084 } else {
4085 /* Interface orders are hardcoded in the specification */
4086 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
4087 data->isoc_ifnum = ifnum_base + 1;
4088 }
4089
4090 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) &&
4091 (id->driver_info & BTUSB_REALTEK)) {
4092 hdev->setup = btusb_setup_realtek;
4093 hdev->shutdown = btrtl_shutdown_realtek;
4094 hdev->cmd_timeout = btusb_rtl_cmd_timeout;
4095
4096 /* Realtek devices need to set remote wakeup on auto-suspend */
4097 set_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags);
4098 set_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags);
4099 }
4100
4101 if (!reset)
4102 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4103
4104 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
4105 if (!disable_scofix)
4106 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
4107 }
4108
4109 if (id->driver_info & BTUSB_BROKEN_ISOC)
4110 data->isoc = NULL;
4111
4112 if (id->driver_info & BTUSB_WIDEBAND_SPEECH)
4113 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
4114
4115 if (id->driver_info & BTUSB_VALID_LE_STATES)
4116 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
4117
4118 if (id->driver_info & BTUSB_DIGIANSWER) {
4119 data->cmdreq_type = USB_TYPE_VENDOR;
4120 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4121 }
4122
4123 if (id->driver_info & BTUSB_CSR) {
4124 struct usb_device *udev = data->udev;
4125 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
4126
4127 /* Old firmware would otherwise execute USB reset */
4128 if (bcdDevice < 0x117)
4129 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4130
4131 /* This must be set first in case we disable it for fakes */
4132 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4133
4134 /* Fake CSR devices with broken commands */
4135 if (le16_to_cpu(udev->descriptor.idVendor) == 0x0a12 &&
4136 le16_to_cpu(udev->descriptor.idProduct) == 0x0001)
4137 hdev->setup = btusb_setup_csr;
4138 }
4139
4140 if (id->driver_info & BTUSB_SNIFFER) {
4141 struct usb_device *udev = data->udev;
4142
4143 /* New sniffer firmware has crippled HCI interface */
4144 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
4145 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4146 }
4147
4148 if (id->driver_info & BTUSB_INTEL_BOOT) {
4149 /* A bug in the bootloader causes that interrupt interface is
4150 * only enabled after receiving SetInterface(0, AltSetting=0).
4151 */
4152 err = usb_set_interface(data->udev, 0, 0);
4153 if (err < 0) {
4154 BT_ERR("failed to set interface 0, alt 0 %d", err);
4155 goto out_free_dev;
4156 }
4157 }
4158
4159 if (data->isoc) {
4160 err = usb_driver_claim_interface(&btusb_driver,
4161 data->isoc, data);
4162 if (err < 0)
4163 goto out_free_dev;
4164 }
4165
4166 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) {
4167 if (!usb_driver_claim_interface(&btusb_driver,
4168 data->diag, data))
4169 __set_diag_interface(hdev);
4170 else
4171 data->diag = NULL;
4172 }
4173
4174 if (enable_autosuspend)
4175 usb_enable_autosuspend(data->udev);
4176
4177 data->poll_sync = enable_poll_sync;
4178
4179 err = hci_register_dev(hdev);
4180 if (err < 0)
4181 goto out_free_dev;
4182
4183 usb_set_intfdata(intf, data);
4184
4185 debugfs_create_file("force_poll_sync", 0644, hdev->debugfs, data,
4186 &force_poll_sync_fops);
4187
4188 return 0;
4189
4190out_free_dev:
4191 if (data->reset_gpio)
4192 gpiod_put(data->reset_gpio);
4193 hci_free_dev(hdev);
4194 return err;
4195}
4196
4197static void btusb_disconnect(struct usb_interface *intf)
4198{
4199 struct btusb_data *data = usb_get_intfdata(intf);
4200 struct hci_dev *hdev;
4201
4202 BT_DBG("intf %p", intf);
4203
4204 if (!data)
4205 return;
4206
4207 hdev = data->hdev;
4208 usb_set_intfdata(data->intf, NULL);
4209
4210 if (data->isoc)
4211 usb_set_intfdata(data->isoc, NULL);
4212
4213 if (data->diag)
4214 usb_set_intfdata(data->diag, NULL);
4215
4216 hci_unregister_dev(hdev);
4217
4218 if (intf == data->intf) {
4219 if (data->isoc)
4220 usb_driver_release_interface(&btusb_driver, data->isoc);
4221 if (data->diag)
4222 usb_driver_release_interface(&btusb_driver, data->diag);
4223 } else if (intf == data->isoc) {
4224 if (data->diag)
4225 usb_driver_release_interface(&btusb_driver, data->diag);
4226 usb_driver_release_interface(&btusb_driver, data->intf);
4227 } else if (intf == data->diag) {
4228 usb_driver_release_interface(&btusb_driver, data->intf);
4229 if (data->isoc)
4230 usb_driver_release_interface(&btusb_driver, data->isoc);
4231 }
4232
4233 if (data->oob_wake_irq)
4234 device_init_wakeup(&data->udev->dev, false);
4235
4236 if (data->reset_gpio)
4237 gpiod_put(data->reset_gpio);
4238
4239 hci_free_dev(hdev);
4240}
4241
4242#ifdef CONFIG_PM
4243static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
4244{
4245 struct btusb_data *data = usb_get_intfdata(intf);
4246
4247 BT_DBG("intf %p", intf);
4248
4249 if (data->suspend_count++)
4250 return 0;
4251
4252 spin_lock_irq(&data->txlock);
4253 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
4254 set_bit(BTUSB_SUSPENDING, &data->flags);
4255 spin_unlock_irq(&data->txlock);
4256 } else {
4257 spin_unlock_irq(&data->txlock);
4258 data->suspend_count--;
4259 return -EBUSY;
4260 }
4261
4262 cancel_work_sync(&data->work);
4263
4264 btusb_stop_traffic(data);
4265 usb_kill_anchored_urbs(&data->tx_anchor);
4266
4267 if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
4268 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4269 enable_irq_wake(data->oob_wake_irq);
4270 enable_irq(data->oob_wake_irq);
4271 }
4272
4273 /* For global suspend, Realtek devices lose the loaded fw
4274 * in them. But for autosuspend, firmware should remain.
4275 * Actually, it depends on whether the usb host sends
4276 * set feature (enable wakeup) or not.
4277 */
4278 if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags)) {
4279 if (PMSG_IS_AUTO(message) &&
4280 device_can_wakeup(&data->udev->dev))
4281 data->udev->do_remote_wakeup = 1;
4282 else if (!PMSG_IS_AUTO(message) &&
4283 !device_may_wakeup(&data->udev->dev)) {
4284 data->udev->do_remote_wakeup = 0;
4285 data->udev->reset_resume = 1;
4286 }
4287 }
4288
4289 return 0;
4290}
4291
4292static void play_deferred(struct btusb_data *data)
4293{
4294 struct urb *urb;
4295 int err;
4296
4297 while ((urb = usb_get_from_anchor(&data->deferred))) {
4298 usb_anchor_urb(urb, &data->tx_anchor);
4299
4300 err = usb_submit_urb(urb, GFP_ATOMIC);
4301 if (err < 0) {
4302 if (err != -EPERM && err != -ENODEV)
4303 BT_ERR("%s urb %p submission failed (%d)",
4304 data->hdev->name, urb, -err);
4305 kfree(urb->setup_packet);
4306 usb_unanchor_urb(urb);
4307 usb_free_urb(urb);
4308 break;
4309 }
4310
4311 data->tx_in_flight++;
4312 usb_free_urb(urb);
4313 }
4314
4315 /* Cleanup the rest deferred urbs. */
4316 while ((urb = usb_get_from_anchor(&data->deferred))) {
4317 kfree(urb->setup_packet);
4318 usb_free_urb(urb);
4319 }
4320}
4321
4322static int btusb_resume(struct usb_interface *intf)
4323{
4324 struct btusb_data *data = usb_get_intfdata(intf);
4325 struct hci_dev *hdev = data->hdev;
4326 int err = 0;
4327
4328 BT_DBG("intf %p", intf);
4329
4330 if (--data->suspend_count)
4331 return 0;
4332
4333 /* Disable only if not already disabled (keep it balanced) */
4334 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4335 disable_irq(data->oob_wake_irq);
4336 disable_irq_wake(data->oob_wake_irq);
4337 }
4338
4339 if (!test_bit(HCI_RUNNING, &hdev->flags))
4340 goto done;
4341
4342 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4343 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4344 if (err < 0) {
4345 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
4346 goto failed;
4347 }
4348 }
4349
4350 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
4351 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
4352 if (err < 0) {
4353 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
4354 goto failed;
4355 }
4356
4357 btusb_submit_bulk_urb(hdev, GFP_NOIO);
4358 }
4359
4360 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
4361 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
4362 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
4363 else
4364 btusb_submit_isoc_urb(hdev, GFP_NOIO);
4365 }
4366
4367 spin_lock_irq(&data->txlock);
4368 play_deferred(data);
4369 clear_bit(BTUSB_SUSPENDING, &data->flags);
4370 spin_unlock_irq(&data->txlock);
4371 schedule_work(&data->work);
4372
4373 return 0;
4374
4375failed:
4376 usb_scuttle_anchored_urbs(&data->deferred);
4377done:
4378 spin_lock_irq(&data->txlock);
4379 clear_bit(BTUSB_SUSPENDING, &data->flags);
4380 spin_unlock_irq(&data->txlock);
4381
4382 return err;
4383}
4384#endif
4385
4386static struct usb_driver btusb_driver = {
4387 .name = "btusb",
4388 .probe = btusb_probe,
4389 .disconnect = btusb_disconnect,
4390#ifdef CONFIG_PM
4391 .suspend = btusb_suspend,
4392 .resume = btusb_resume,
4393#endif
4394 .id_table = btusb_table,
4395 .supports_autosuspend = 1,
4396 .disable_hub_initiated_lpm = 1,
4397};
4398
4399module_usb_driver(btusb_driver);
4400
4401module_param(disable_scofix, bool, 0644);
4402MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
4403
4404module_param(force_scofix, bool, 0644);
4405MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
4406
4407module_param(enable_autosuspend, bool, 0644);
4408MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
4409
4410module_param(reset, bool, 0644);
4411MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
4412
4413MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
4414MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
4415MODULE_VERSION(VERSION);
4416MODULE_LICENSE("GPL");
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 *
4 * Generic Bluetooth USB driver
5 *
6 * Copyright (C) 2005-2008 Marcel Holtmann <marcel@holtmann.org>
7 */
8
9#include <linux/dmi.h>
10#include <linux/module.h>
11#include <linux/usb.h>
12#include <linux/usb/quirks.h>
13#include <linux/firmware.h>
14#include <linux/iopoll.h>
15#include <linux/of_device.h>
16#include <linux/of_irq.h>
17#include <linux/suspend.h>
18#include <linux/gpio/consumer.h>
19#include <asm/unaligned.h>
20
21#include <net/bluetooth/bluetooth.h>
22#include <net/bluetooth/hci_core.h>
23
24#include "btintel.h"
25#include "btbcm.h"
26#include "btrtl.h"
27
28#define VERSION "0.8"
29
30static bool disable_scofix;
31static bool force_scofix;
32static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND);
33
34static bool reset = true;
35
36static struct usb_driver btusb_driver;
37
38#define BTUSB_IGNORE 0x01
39#define BTUSB_DIGIANSWER 0x02
40#define BTUSB_CSR 0x04
41#define BTUSB_SNIFFER 0x08
42#define BTUSB_BCM92035 0x10
43#define BTUSB_BROKEN_ISOC 0x20
44#define BTUSB_WRONG_SCO_MTU 0x40
45#define BTUSB_ATH3012 0x80
46#define BTUSB_INTEL 0x100
47#define BTUSB_INTEL_BOOT 0x200
48#define BTUSB_BCM_PATCHRAM 0x400
49#define BTUSB_MARVELL 0x800
50#define BTUSB_SWAVE 0x1000
51#define BTUSB_INTEL_NEW 0x2000
52#define BTUSB_AMP 0x4000
53#define BTUSB_QCA_ROME 0x8000
54#define BTUSB_BCM_APPLE 0x10000
55#define BTUSB_REALTEK 0x20000
56#define BTUSB_BCM2045 0x40000
57#define BTUSB_IFNUM_2 0x80000
58#define BTUSB_CW6622 0x100000
59#define BTUSB_MEDIATEK 0x200000
60
61static const struct usb_device_id btusb_table[] = {
62 /* Generic Bluetooth USB device */
63 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
64
65 /* Generic Bluetooth AMP device */
66 { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
67
68 /* Generic Bluetooth USB interface */
69 { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
70
71 /* Apple-specific (Broadcom) devices */
72 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
73 .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
74
75 /* MediaTek MT76x0E */
76 { USB_DEVICE(0x0e8d, 0x763f) },
77
78 /* Broadcom SoftSailing reporting vendor specific */
79 { USB_DEVICE(0x0a5c, 0x21e1) },
80
81 /* Apple MacBookPro 7,1 */
82 { USB_DEVICE(0x05ac, 0x8213) },
83
84 /* Apple iMac11,1 */
85 { USB_DEVICE(0x05ac, 0x8215) },
86
87 /* Apple MacBookPro6,2 */
88 { USB_DEVICE(0x05ac, 0x8218) },
89
90 /* Apple MacBookAir3,1, MacBookAir3,2 */
91 { USB_DEVICE(0x05ac, 0x821b) },
92
93 /* Apple MacBookAir4,1 */
94 { USB_DEVICE(0x05ac, 0x821f) },
95
96 /* Apple MacBookPro8,2 */
97 { USB_DEVICE(0x05ac, 0x821a) },
98
99 /* Apple MacMini5,1 */
100 { USB_DEVICE(0x05ac, 0x8281) },
101
102 /* AVM BlueFRITZ! USB v2.0 */
103 { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
104
105 /* Bluetooth Ultraport Module from IBM */
106 { USB_DEVICE(0x04bf, 0x030a) },
107
108 /* ALPS Modules with non-standard id */
109 { USB_DEVICE(0x044e, 0x3001) },
110 { USB_DEVICE(0x044e, 0x3002) },
111
112 /* Ericsson with non-standard id */
113 { USB_DEVICE(0x0bdb, 0x1002) },
114
115 /* Canyon CN-BTU1 with HID interfaces */
116 { USB_DEVICE(0x0c10, 0x0000) },
117
118 /* Broadcom BCM20702A0 */
119 { USB_DEVICE(0x413c, 0x8197) },
120
121 /* Broadcom BCM20702B0 (Dynex/Insignia) */
122 { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
123
124 /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
125 { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01),
126 .driver_info = BTUSB_BCM_PATCHRAM },
127
128 /* Broadcom BCM920703 (HTC Vive) */
129 { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
130 .driver_info = BTUSB_BCM_PATCHRAM },
131
132 /* Foxconn - Hon Hai */
133 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
134 .driver_info = BTUSB_BCM_PATCHRAM },
135
136 /* Lite-On Technology - Broadcom based */
137 { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
138 .driver_info = BTUSB_BCM_PATCHRAM },
139
140 /* Broadcom devices with vendor specific id */
141 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
142 .driver_info = BTUSB_BCM_PATCHRAM },
143
144 /* ASUSTek Computer - Broadcom based */
145 { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
146 .driver_info = BTUSB_BCM_PATCHRAM },
147
148 /* Belkin F8065bf - Broadcom based */
149 { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
150 .driver_info = BTUSB_BCM_PATCHRAM },
151
152 /* IMC Networks - Broadcom based */
153 { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
154 .driver_info = BTUSB_BCM_PATCHRAM },
155
156 /* Dell Computer - Broadcom based */
157 { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
158 .driver_info = BTUSB_BCM_PATCHRAM },
159
160 /* Toshiba Corp - Broadcom based */
161 { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
162 .driver_info = BTUSB_BCM_PATCHRAM },
163
164 /* Intel Bluetooth USB Bootloader (RAM module) */
165 { USB_DEVICE(0x8087, 0x0a5a),
166 .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
167
168 { } /* Terminating entry */
169};
170
171MODULE_DEVICE_TABLE(usb, btusb_table);
172
173static const struct usb_device_id blacklist_table[] = {
174 /* CSR BlueCore devices */
175 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
176
177 /* Broadcom BCM2033 without firmware */
178 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
179
180 /* Broadcom BCM2045 devices */
181 { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
182
183 /* Atheros 3011 with sflash firmware */
184 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
185 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
186 { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
187 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
188 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
189 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
190 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
191
192 /* Atheros AR9285 Malbec with sflash firmware */
193 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
194
195 /* Atheros 3012 with sflash firmware */
196 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
197 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
198 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
199 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
200 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
201 { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
202 { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
203 { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
204 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
205 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
206 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
207 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
208 { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
209 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
210 { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
211 { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
212 { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
213 { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
214 { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
215 { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
216 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
217 { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
218 { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
219 { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
220 { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
221 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
222 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
223 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
224 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
225 { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
226 { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
227 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
228 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
229 { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
230 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
231 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
232 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
233 { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
234 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
235 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
236 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
237 { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
238 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
239 { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
240 { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
241 { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
242 { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
243 { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
244 { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
245 { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
246
247 /* Atheros AR5BBU12 with sflash firmware */
248 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
249
250 /* Atheros AR5BBU12 with sflash firmware */
251 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
252 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
253
254 /* QCA ROME chipset */
255 { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME },
256 { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
257 { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME },
258 { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME },
259 { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
260 { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME },
261 { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
262 { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME },
263 { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME },
264 { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME },
265 { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME },
266 { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME },
267 { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME },
268 { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME },
269 { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME },
270 { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME },
271 { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME },
272
273 /* Broadcom BCM2035 */
274 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
275 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
276 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
277
278 /* Broadcom BCM2045 */
279 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
280 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
281
282 /* IBM/Lenovo ThinkPad with Broadcom chip */
283 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
284 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
285
286 /* HP laptop with Broadcom chip */
287 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
288
289 /* Dell laptop with Broadcom chip */
290 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
291
292 /* Dell Wireless 370 and 410 devices */
293 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
294 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
295
296 /* Belkin F8T012 and F8T013 devices */
297 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
298 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
299
300 /* Asus WL-BTD202 device */
301 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
302
303 /* Kensington Bluetooth USB adapter */
304 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
305
306 /* RTX Telecom based adapters with buggy SCO support */
307 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
308 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
309
310 /* CONWISE Technology based adapters with buggy SCO support */
311 { USB_DEVICE(0x0e5e, 0x6622),
312 .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
313
314 /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
315 { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
316
317 /* Digianswer devices */
318 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
319 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
320
321 /* CSR BlueCore Bluetooth Sniffer */
322 { USB_DEVICE(0x0a12, 0x0002),
323 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
324
325 /* Frontline ComProbe Bluetooth Sniffer */
326 { USB_DEVICE(0x16d3, 0x0002),
327 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
328
329 /* Marvell Bluetooth devices */
330 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
331 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
332 { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
333
334 /* Intel Bluetooth devices */
335 { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW },
336 { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_NEW },
337 { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_NEW },
338 { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
339 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
340 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
341 { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
342 { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL },
343 { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW },
344
345 /* Other Intel Bluetooth devices */
346 { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
347 .driver_info = BTUSB_IGNORE },
348
349 /* Realtek Bluetooth devices */
350 { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
351 .driver_info = BTUSB_REALTEK },
352
353 /* MediaTek Bluetooth devices */
354 { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01),
355 .driver_info = BTUSB_MEDIATEK },
356
357 /* Additional Realtek 8723AE Bluetooth devices */
358 { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
359 { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
360
361 /* Additional Realtek 8723BE Bluetooth devices */
362 { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
363 { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
364 { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
365 { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
366 { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
367 { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
368
369 /* Additional Realtek 8723BU Bluetooth devices */
370 { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
371
372 /* Additional Realtek 8723DE Bluetooth devices */
373 { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
374 { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
375
376 /* Additional Realtek 8821AE Bluetooth devices */
377 { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
378 { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
379 { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
380 { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
381 { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
382
383 /* Additional Realtek 8822BE Bluetooth devices */
384 { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
385 { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
386
387 /* Additional Realtek 8822CE Bluetooth devices */
388 { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK },
389
390 /* Silicon Wave based devices */
391 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
392
393 { } /* Terminating entry */
394};
395
396/* The Bluetooth USB module build into some devices needs to be reset on resume,
397 * this is a problem with the platform (likely shutting off all power) not with
398 * the module itself. So we use a DMI list to match known broken platforms.
399 */
400static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
401 {
402 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
403 .matches = {
404 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
405 DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
406 },
407 },
408 {
409 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
410 .matches = {
411 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
412 DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
413 },
414 },
415 {
416 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
417 .matches = {
418 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
419 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
420 },
421 },
422 {}
423};
424
425#define BTUSB_MAX_ISOC_FRAMES 10
426
427#define BTUSB_INTR_RUNNING 0
428#define BTUSB_BULK_RUNNING 1
429#define BTUSB_ISOC_RUNNING 2
430#define BTUSB_SUSPENDING 3
431#define BTUSB_DID_ISO_RESUME 4
432#define BTUSB_BOOTLOADER 5
433#define BTUSB_DOWNLOADING 6
434#define BTUSB_FIRMWARE_LOADED 7
435#define BTUSB_FIRMWARE_FAILED 8
436#define BTUSB_BOOTING 9
437#define BTUSB_DIAG_RUNNING 10
438#define BTUSB_OOB_WAKE_ENABLED 11
439#define BTUSB_HW_RESET_ACTIVE 12
440#define BTUSB_TX_WAIT_VND_EVT 13
441#define BTUSB_WAKEUP_DISABLE 14
442
443struct btusb_data {
444 struct hci_dev *hdev;
445 struct usb_device *udev;
446 struct usb_interface *intf;
447 struct usb_interface *isoc;
448 struct usb_interface *diag;
449 unsigned isoc_ifnum;
450
451 unsigned long flags;
452
453 struct work_struct work;
454 struct work_struct waker;
455
456 struct usb_anchor deferred;
457 struct usb_anchor tx_anchor;
458 int tx_in_flight;
459 spinlock_t txlock;
460
461 struct usb_anchor intr_anchor;
462 struct usb_anchor bulk_anchor;
463 struct usb_anchor isoc_anchor;
464 struct usb_anchor diag_anchor;
465 struct usb_anchor ctrl_anchor;
466 spinlock_t rxlock;
467
468 struct sk_buff *evt_skb;
469 struct sk_buff *acl_skb;
470 struct sk_buff *sco_skb;
471
472 struct usb_endpoint_descriptor *intr_ep;
473 struct usb_endpoint_descriptor *bulk_tx_ep;
474 struct usb_endpoint_descriptor *bulk_rx_ep;
475 struct usb_endpoint_descriptor *isoc_tx_ep;
476 struct usb_endpoint_descriptor *isoc_rx_ep;
477 struct usb_endpoint_descriptor *diag_tx_ep;
478 struct usb_endpoint_descriptor *diag_rx_ep;
479
480 struct gpio_desc *reset_gpio;
481
482 __u8 cmdreq_type;
483 __u8 cmdreq;
484
485 unsigned int sco_num;
486 int isoc_altsetting;
487 int suspend_count;
488
489 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
490 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
491
492 int (*setup_on_usb)(struct hci_dev *hdev);
493
494 int oob_wake_irq; /* irq for out-of-band wake-on-bt */
495 unsigned cmd_timeout_cnt;
496};
497
498
499static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
500{
501 struct btusb_data *data = hci_get_drvdata(hdev);
502 struct gpio_desc *reset_gpio = data->reset_gpio;
503
504 if (++data->cmd_timeout_cnt < 5)
505 return;
506
507 if (!reset_gpio) {
508 bt_dev_err(hdev, "No way to reset. Ignoring and continuing");
509 return;
510 }
511
512 /*
513 * Toggle the hard reset line if the platform provides one. The reset
514 * is going to yank the device off the USB and then replug. So doing
515 * once is enough. The cleanup is handled correctly on the way out
516 * (standard USB disconnect), and the new device is detected cleanly
517 * and bound to the driver again like it should be.
518 */
519 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
520 bt_dev_err(hdev, "last reset failed? Not resetting again");
521 return;
522 }
523
524 bt_dev_err(hdev, "Initiating HW reset via gpio");
525 gpiod_set_value_cansleep(reset_gpio, 1);
526 msleep(100);
527 gpiod_set_value_cansleep(reset_gpio, 0);
528}
529
530static void btusb_rtl_cmd_timeout(struct hci_dev *hdev)
531{
532 struct btusb_data *data = hci_get_drvdata(hdev);
533 struct gpio_desc *reset_gpio = data->reset_gpio;
534
535 if (++data->cmd_timeout_cnt < 5)
536 return;
537
538 if (!reset_gpio) {
539 bt_dev_err(hdev, "No gpio to reset Realtek device, ignoring");
540 return;
541 }
542
543 /* Toggle the hard reset line. The Realtek device is going to
544 * yank itself off the USB and then replug. The cleanup is handled
545 * correctly on the way out (standard USB disconnect), and the new
546 * device is detected cleanly and bound to the driver again like
547 * it should be.
548 */
549 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
550 bt_dev_err(hdev, "last reset failed? Not resetting again");
551 return;
552 }
553
554 bt_dev_err(hdev, "Reset Realtek device via gpio");
555 gpiod_set_value_cansleep(reset_gpio, 0);
556 msleep(200);
557 gpiod_set_value_cansleep(reset_gpio, 1);
558}
559
560static inline void btusb_free_frags(struct btusb_data *data)
561{
562 unsigned long flags;
563
564 spin_lock_irqsave(&data->rxlock, flags);
565
566 kfree_skb(data->evt_skb);
567 data->evt_skb = NULL;
568
569 kfree_skb(data->acl_skb);
570 data->acl_skb = NULL;
571
572 kfree_skb(data->sco_skb);
573 data->sco_skb = NULL;
574
575 spin_unlock_irqrestore(&data->rxlock, flags);
576}
577
578static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
579{
580 struct sk_buff *skb;
581 unsigned long flags;
582 int err = 0;
583
584 spin_lock_irqsave(&data->rxlock, flags);
585 skb = data->evt_skb;
586
587 while (count) {
588 int len;
589
590 if (!skb) {
591 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
592 if (!skb) {
593 err = -ENOMEM;
594 break;
595 }
596
597 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
598 hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
599 }
600
601 len = min_t(uint, hci_skb_expect(skb), count);
602 skb_put_data(skb, buffer, len);
603
604 count -= len;
605 buffer += len;
606 hci_skb_expect(skb) -= len;
607
608 if (skb->len == HCI_EVENT_HDR_SIZE) {
609 /* Complete event header */
610 hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
611
612 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
613 kfree_skb(skb);
614 skb = NULL;
615
616 err = -EILSEQ;
617 break;
618 }
619 }
620
621 if (!hci_skb_expect(skb)) {
622 /* Complete frame */
623 data->recv_event(data->hdev, skb);
624 skb = NULL;
625 }
626 }
627
628 data->evt_skb = skb;
629 spin_unlock_irqrestore(&data->rxlock, flags);
630
631 return err;
632}
633
634static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
635{
636 struct sk_buff *skb;
637 unsigned long flags;
638 int err = 0;
639
640 spin_lock_irqsave(&data->rxlock, flags);
641 skb = data->acl_skb;
642
643 while (count) {
644 int len;
645
646 if (!skb) {
647 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
648 if (!skb) {
649 err = -ENOMEM;
650 break;
651 }
652
653 hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
654 hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
655 }
656
657 len = min_t(uint, hci_skb_expect(skb), count);
658 skb_put_data(skb, buffer, len);
659
660 count -= len;
661 buffer += len;
662 hci_skb_expect(skb) -= len;
663
664 if (skb->len == HCI_ACL_HDR_SIZE) {
665 __le16 dlen = hci_acl_hdr(skb)->dlen;
666
667 /* Complete ACL header */
668 hci_skb_expect(skb) = __le16_to_cpu(dlen);
669
670 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
671 kfree_skb(skb);
672 skb = NULL;
673
674 err = -EILSEQ;
675 break;
676 }
677 }
678
679 if (!hci_skb_expect(skb)) {
680 /* Complete frame */
681 hci_recv_frame(data->hdev, skb);
682 skb = NULL;
683 }
684 }
685
686 data->acl_skb = skb;
687 spin_unlock_irqrestore(&data->rxlock, flags);
688
689 return err;
690}
691
692static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
693{
694 struct sk_buff *skb;
695 unsigned long flags;
696 int err = 0;
697
698 spin_lock_irqsave(&data->rxlock, flags);
699 skb = data->sco_skb;
700
701 while (count) {
702 int len;
703
704 if (!skb) {
705 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
706 if (!skb) {
707 err = -ENOMEM;
708 break;
709 }
710
711 hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
712 hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
713 }
714
715 len = min_t(uint, hci_skb_expect(skb), count);
716 skb_put_data(skb, buffer, len);
717
718 count -= len;
719 buffer += len;
720 hci_skb_expect(skb) -= len;
721
722 if (skb->len == HCI_SCO_HDR_SIZE) {
723 /* Complete SCO header */
724 hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
725
726 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
727 kfree_skb(skb);
728 skb = NULL;
729
730 err = -EILSEQ;
731 break;
732 }
733 }
734
735 if (!hci_skb_expect(skb)) {
736 /* Complete frame */
737 hci_recv_frame(data->hdev, skb);
738 skb = NULL;
739 }
740 }
741
742 data->sco_skb = skb;
743 spin_unlock_irqrestore(&data->rxlock, flags);
744
745 return err;
746}
747
748static void btusb_intr_complete(struct urb *urb)
749{
750 struct hci_dev *hdev = urb->context;
751 struct btusb_data *data = hci_get_drvdata(hdev);
752 int err;
753
754 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
755 urb->actual_length);
756
757 if (!test_bit(HCI_RUNNING, &hdev->flags))
758 return;
759
760 if (urb->status == 0) {
761 hdev->stat.byte_rx += urb->actual_length;
762
763 if (btusb_recv_intr(data, urb->transfer_buffer,
764 urb->actual_length) < 0) {
765 bt_dev_err(hdev, "corrupted event packet");
766 hdev->stat.err_rx++;
767 }
768 } else if (urb->status == -ENOENT) {
769 /* Avoid suspend failed when usb_kill_urb */
770 return;
771 }
772
773 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
774 return;
775
776 usb_mark_last_busy(data->udev);
777 usb_anchor_urb(urb, &data->intr_anchor);
778
779 err = usb_submit_urb(urb, GFP_ATOMIC);
780 if (err < 0) {
781 /* -EPERM: urb is being killed;
782 * -ENODEV: device got disconnected
783 */
784 if (err != -EPERM && err != -ENODEV)
785 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
786 urb, -err);
787 usb_unanchor_urb(urb);
788 }
789}
790
791static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
792{
793 struct btusb_data *data = hci_get_drvdata(hdev);
794 struct urb *urb;
795 unsigned char *buf;
796 unsigned int pipe;
797 int err, size;
798
799 BT_DBG("%s", hdev->name);
800
801 if (!data->intr_ep)
802 return -ENODEV;
803
804 urb = usb_alloc_urb(0, mem_flags);
805 if (!urb)
806 return -ENOMEM;
807
808 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
809
810 buf = kmalloc(size, mem_flags);
811 if (!buf) {
812 usb_free_urb(urb);
813 return -ENOMEM;
814 }
815
816 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
817
818 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
819 btusb_intr_complete, hdev, data->intr_ep->bInterval);
820
821 urb->transfer_flags |= URB_FREE_BUFFER;
822
823 usb_anchor_urb(urb, &data->intr_anchor);
824
825 err = usb_submit_urb(urb, mem_flags);
826 if (err < 0) {
827 if (err != -EPERM && err != -ENODEV)
828 bt_dev_err(hdev, "urb %p submission failed (%d)",
829 urb, -err);
830 usb_unanchor_urb(urb);
831 }
832
833 usb_free_urb(urb);
834
835 return err;
836}
837
838static void btusb_bulk_complete(struct urb *urb)
839{
840 struct hci_dev *hdev = urb->context;
841 struct btusb_data *data = hci_get_drvdata(hdev);
842 int err;
843
844 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
845 urb->actual_length);
846
847 if (!test_bit(HCI_RUNNING, &hdev->flags))
848 return;
849
850 if (urb->status == 0) {
851 hdev->stat.byte_rx += urb->actual_length;
852
853 if (data->recv_bulk(data, urb->transfer_buffer,
854 urb->actual_length) < 0) {
855 bt_dev_err(hdev, "corrupted ACL packet");
856 hdev->stat.err_rx++;
857 }
858 } else if (urb->status == -ENOENT) {
859 /* Avoid suspend failed when usb_kill_urb */
860 return;
861 }
862
863 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
864 return;
865
866 usb_anchor_urb(urb, &data->bulk_anchor);
867 usb_mark_last_busy(data->udev);
868
869 err = usb_submit_urb(urb, GFP_ATOMIC);
870 if (err < 0) {
871 /* -EPERM: urb is being killed;
872 * -ENODEV: device got disconnected
873 */
874 if (err != -EPERM && err != -ENODEV)
875 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
876 urb, -err);
877 usb_unanchor_urb(urb);
878 }
879}
880
881static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
882{
883 struct btusb_data *data = hci_get_drvdata(hdev);
884 struct urb *urb;
885 unsigned char *buf;
886 unsigned int pipe;
887 int err, size = HCI_MAX_FRAME_SIZE;
888
889 BT_DBG("%s", hdev->name);
890
891 if (!data->bulk_rx_ep)
892 return -ENODEV;
893
894 urb = usb_alloc_urb(0, mem_flags);
895 if (!urb)
896 return -ENOMEM;
897
898 buf = kmalloc(size, mem_flags);
899 if (!buf) {
900 usb_free_urb(urb);
901 return -ENOMEM;
902 }
903
904 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
905
906 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
907 btusb_bulk_complete, hdev);
908
909 urb->transfer_flags |= URB_FREE_BUFFER;
910
911 usb_mark_last_busy(data->udev);
912 usb_anchor_urb(urb, &data->bulk_anchor);
913
914 err = usb_submit_urb(urb, mem_flags);
915 if (err < 0) {
916 if (err != -EPERM && err != -ENODEV)
917 bt_dev_err(hdev, "urb %p submission failed (%d)",
918 urb, -err);
919 usb_unanchor_urb(urb);
920 }
921
922 usb_free_urb(urb);
923
924 return err;
925}
926
927static void btusb_isoc_complete(struct urb *urb)
928{
929 struct hci_dev *hdev = urb->context;
930 struct btusb_data *data = hci_get_drvdata(hdev);
931 int i, err;
932
933 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
934 urb->actual_length);
935
936 if (!test_bit(HCI_RUNNING, &hdev->flags))
937 return;
938
939 if (urb->status == 0) {
940 for (i = 0; i < urb->number_of_packets; i++) {
941 unsigned int offset = urb->iso_frame_desc[i].offset;
942 unsigned int length = urb->iso_frame_desc[i].actual_length;
943
944 if (urb->iso_frame_desc[i].status)
945 continue;
946
947 hdev->stat.byte_rx += length;
948
949 if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
950 length) < 0) {
951 bt_dev_err(hdev, "corrupted SCO packet");
952 hdev->stat.err_rx++;
953 }
954 }
955 } else if (urb->status == -ENOENT) {
956 /* Avoid suspend failed when usb_kill_urb */
957 return;
958 }
959
960 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
961 return;
962
963 usb_anchor_urb(urb, &data->isoc_anchor);
964
965 err = usb_submit_urb(urb, GFP_ATOMIC);
966 if (err < 0) {
967 /* -EPERM: urb is being killed;
968 * -ENODEV: device got disconnected
969 */
970 if (err != -EPERM && err != -ENODEV)
971 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
972 urb, -err);
973 usb_unanchor_urb(urb);
974 }
975}
976
977static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
978{
979 int i, offset = 0;
980
981 BT_DBG("len %d mtu %d", len, mtu);
982
983 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
984 i++, offset += mtu, len -= mtu) {
985 urb->iso_frame_desc[i].offset = offset;
986 urb->iso_frame_desc[i].length = mtu;
987 }
988
989 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
990 urb->iso_frame_desc[i].offset = offset;
991 urb->iso_frame_desc[i].length = len;
992 i++;
993 }
994
995 urb->number_of_packets = i;
996}
997
998static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
999{
1000 struct btusb_data *data = hci_get_drvdata(hdev);
1001 struct urb *urb;
1002 unsigned char *buf;
1003 unsigned int pipe;
1004 int err, size;
1005
1006 BT_DBG("%s", hdev->name);
1007
1008 if (!data->isoc_rx_ep)
1009 return -ENODEV;
1010
1011 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
1012 if (!urb)
1013 return -ENOMEM;
1014
1015 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
1016 BTUSB_MAX_ISOC_FRAMES;
1017
1018 buf = kmalloc(size, mem_flags);
1019 if (!buf) {
1020 usb_free_urb(urb);
1021 return -ENOMEM;
1022 }
1023
1024 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
1025
1026 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
1027 hdev, data->isoc_rx_ep->bInterval);
1028
1029 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
1030
1031 __fill_isoc_descriptor(urb, size,
1032 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
1033
1034 usb_anchor_urb(urb, &data->isoc_anchor);
1035
1036 err = usb_submit_urb(urb, mem_flags);
1037 if (err < 0) {
1038 if (err != -EPERM && err != -ENODEV)
1039 bt_dev_err(hdev, "urb %p submission failed (%d)",
1040 urb, -err);
1041 usb_unanchor_urb(urb);
1042 }
1043
1044 usb_free_urb(urb);
1045
1046 return err;
1047}
1048
1049static void btusb_diag_complete(struct urb *urb)
1050{
1051 struct hci_dev *hdev = urb->context;
1052 struct btusb_data *data = hci_get_drvdata(hdev);
1053 int err;
1054
1055 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1056 urb->actual_length);
1057
1058 if (urb->status == 0) {
1059 struct sk_buff *skb;
1060
1061 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1062 if (skb) {
1063 skb_put_data(skb, urb->transfer_buffer,
1064 urb->actual_length);
1065 hci_recv_diag(hdev, skb);
1066 }
1067 } else if (urb->status == -ENOENT) {
1068 /* Avoid suspend failed when usb_kill_urb */
1069 return;
1070 }
1071
1072 if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1073 return;
1074
1075 usb_anchor_urb(urb, &data->diag_anchor);
1076 usb_mark_last_busy(data->udev);
1077
1078 err = usb_submit_urb(urb, GFP_ATOMIC);
1079 if (err < 0) {
1080 /* -EPERM: urb is being killed;
1081 * -ENODEV: device got disconnected
1082 */
1083 if (err != -EPERM && err != -ENODEV)
1084 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1085 urb, -err);
1086 usb_unanchor_urb(urb);
1087 }
1088}
1089
1090static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1091{
1092 struct btusb_data *data = hci_get_drvdata(hdev);
1093 struct urb *urb;
1094 unsigned char *buf;
1095 unsigned int pipe;
1096 int err, size = HCI_MAX_FRAME_SIZE;
1097
1098 BT_DBG("%s", hdev->name);
1099
1100 if (!data->diag_rx_ep)
1101 return -ENODEV;
1102
1103 urb = usb_alloc_urb(0, mem_flags);
1104 if (!urb)
1105 return -ENOMEM;
1106
1107 buf = kmalloc(size, mem_flags);
1108 if (!buf) {
1109 usb_free_urb(urb);
1110 return -ENOMEM;
1111 }
1112
1113 pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1114
1115 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1116 btusb_diag_complete, hdev);
1117
1118 urb->transfer_flags |= URB_FREE_BUFFER;
1119
1120 usb_mark_last_busy(data->udev);
1121 usb_anchor_urb(urb, &data->diag_anchor);
1122
1123 err = usb_submit_urb(urb, mem_flags);
1124 if (err < 0) {
1125 if (err != -EPERM && err != -ENODEV)
1126 bt_dev_err(hdev, "urb %p submission failed (%d)",
1127 urb, -err);
1128 usb_unanchor_urb(urb);
1129 }
1130
1131 usb_free_urb(urb);
1132
1133 return err;
1134}
1135
1136static void btusb_tx_complete(struct urb *urb)
1137{
1138 struct sk_buff *skb = urb->context;
1139 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1140 struct btusb_data *data = hci_get_drvdata(hdev);
1141 unsigned long flags;
1142
1143 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1144 urb->actual_length);
1145
1146 if (!test_bit(HCI_RUNNING, &hdev->flags))
1147 goto done;
1148
1149 if (!urb->status)
1150 hdev->stat.byte_tx += urb->transfer_buffer_length;
1151 else
1152 hdev->stat.err_tx++;
1153
1154done:
1155 spin_lock_irqsave(&data->txlock, flags);
1156 data->tx_in_flight--;
1157 spin_unlock_irqrestore(&data->txlock, flags);
1158
1159 kfree(urb->setup_packet);
1160
1161 kfree_skb(skb);
1162}
1163
1164static void btusb_isoc_tx_complete(struct urb *urb)
1165{
1166 struct sk_buff *skb = urb->context;
1167 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1168
1169 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1170 urb->actual_length);
1171
1172 if (!test_bit(HCI_RUNNING, &hdev->flags))
1173 goto done;
1174
1175 if (!urb->status)
1176 hdev->stat.byte_tx += urb->transfer_buffer_length;
1177 else
1178 hdev->stat.err_tx++;
1179
1180done:
1181 kfree(urb->setup_packet);
1182
1183 kfree_skb(skb);
1184}
1185
1186static int btusb_open(struct hci_dev *hdev)
1187{
1188 struct btusb_data *data = hci_get_drvdata(hdev);
1189 int err;
1190
1191 BT_DBG("%s", hdev->name);
1192
1193 err = usb_autopm_get_interface(data->intf);
1194 if (err < 0)
1195 return err;
1196
1197 /* Patching USB firmware files prior to starting any URBs of HCI path
1198 * It is more safe to use USB bulk channel for downloading USB patch
1199 */
1200 if (data->setup_on_usb) {
1201 err = data->setup_on_usb(hdev);
1202 if (err < 0)
1203 return err;
1204 }
1205
1206 data->intf->needs_remote_wakeup = 1;
1207
1208 /* Disable device remote wakeup when host is suspended
1209 * For Realtek chips, global suspend without
1210 * SET_FEATURE (DEVICE_REMOTE_WAKEUP) can save more power in device.
1211 */
1212 if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1213 device_wakeup_disable(&data->udev->dev);
1214
1215 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1216 goto done;
1217
1218 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1219 if (err < 0)
1220 goto failed;
1221
1222 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1223 if (err < 0) {
1224 usb_kill_anchored_urbs(&data->intr_anchor);
1225 goto failed;
1226 }
1227
1228 set_bit(BTUSB_BULK_RUNNING, &data->flags);
1229 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1230
1231 if (data->diag) {
1232 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1233 set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1234 }
1235
1236done:
1237 usb_autopm_put_interface(data->intf);
1238 return 0;
1239
1240failed:
1241 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1242 usb_autopm_put_interface(data->intf);
1243 return err;
1244}
1245
1246static void btusb_stop_traffic(struct btusb_data *data)
1247{
1248 usb_kill_anchored_urbs(&data->intr_anchor);
1249 usb_kill_anchored_urbs(&data->bulk_anchor);
1250 usb_kill_anchored_urbs(&data->isoc_anchor);
1251 usb_kill_anchored_urbs(&data->diag_anchor);
1252 usb_kill_anchored_urbs(&data->ctrl_anchor);
1253}
1254
1255static int btusb_close(struct hci_dev *hdev)
1256{
1257 struct btusb_data *data = hci_get_drvdata(hdev);
1258 int err;
1259
1260 BT_DBG("%s", hdev->name);
1261
1262 cancel_work_sync(&data->work);
1263 cancel_work_sync(&data->waker);
1264
1265 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1266 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1267 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1268 clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1269
1270 btusb_stop_traffic(data);
1271 btusb_free_frags(data);
1272
1273 err = usb_autopm_get_interface(data->intf);
1274 if (err < 0)
1275 goto failed;
1276
1277 data->intf->needs_remote_wakeup = 0;
1278
1279 /* Enable remote wake up for auto-suspend */
1280 if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1281 data->intf->needs_remote_wakeup = 1;
1282
1283 usb_autopm_put_interface(data->intf);
1284
1285failed:
1286 usb_scuttle_anchored_urbs(&data->deferred);
1287 return 0;
1288}
1289
1290static int btusb_flush(struct hci_dev *hdev)
1291{
1292 struct btusb_data *data = hci_get_drvdata(hdev);
1293
1294 BT_DBG("%s", hdev->name);
1295
1296 usb_kill_anchored_urbs(&data->tx_anchor);
1297 btusb_free_frags(data);
1298
1299 return 0;
1300}
1301
1302static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1303{
1304 struct btusb_data *data = hci_get_drvdata(hdev);
1305 struct usb_ctrlrequest *dr;
1306 struct urb *urb;
1307 unsigned int pipe;
1308
1309 urb = usb_alloc_urb(0, GFP_KERNEL);
1310 if (!urb)
1311 return ERR_PTR(-ENOMEM);
1312
1313 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1314 if (!dr) {
1315 usb_free_urb(urb);
1316 return ERR_PTR(-ENOMEM);
1317 }
1318
1319 dr->bRequestType = data->cmdreq_type;
1320 dr->bRequest = data->cmdreq;
1321 dr->wIndex = 0;
1322 dr->wValue = 0;
1323 dr->wLength = __cpu_to_le16(skb->len);
1324
1325 pipe = usb_sndctrlpipe(data->udev, 0x00);
1326
1327 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1328 skb->data, skb->len, btusb_tx_complete, skb);
1329
1330 skb->dev = (void *)hdev;
1331
1332 return urb;
1333}
1334
1335static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1336{
1337 struct btusb_data *data = hci_get_drvdata(hdev);
1338 struct urb *urb;
1339 unsigned int pipe;
1340
1341 if (!data->bulk_tx_ep)
1342 return ERR_PTR(-ENODEV);
1343
1344 urb = usb_alloc_urb(0, GFP_KERNEL);
1345 if (!urb)
1346 return ERR_PTR(-ENOMEM);
1347
1348 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1349
1350 usb_fill_bulk_urb(urb, data->udev, pipe,
1351 skb->data, skb->len, btusb_tx_complete, skb);
1352
1353 skb->dev = (void *)hdev;
1354
1355 return urb;
1356}
1357
1358static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1359{
1360 struct btusb_data *data = hci_get_drvdata(hdev);
1361 struct urb *urb;
1362 unsigned int pipe;
1363
1364 if (!data->isoc_tx_ep)
1365 return ERR_PTR(-ENODEV);
1366
1367 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1368 if (!urb)
1369 return ERR_PTR(-ENOMEM);
1370
1371 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1372
1373 usb_fill_int_urb(urb, data->udev, pipe,
1374 skb->data, skb->len, btusb_isoc_tx_complete,
1375 skb, data->isoc_tx_ep->bInterval);
1376
1377 urb->transfer_flags = URB_ISO_ASAP;
1378
1379 __fill_isoc_descriptor(urb, skb->len,
1380 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1381
1382 skb->dev = (void *)hdev;
1383
1384 return urb;
1385}
1386
1387static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1388{
1389 struct btusb_data *data = hci_get_drvdata(hdev);
1390 int err;
1391
1392 usb_anchor_urb(urb, &data->tx_anchor);
1393
1394 err = usb_submit_urb(urb, GFP_KERNEL);
1395 if (err < 0) {
1396 if (err != -EPERM && err != -ENODEV)
1397 bt_dev_err(hdev, "urb %p submission failed (%d)",
1398 urb, -err);
1399 kfree(urb->setup_packet);
1400 usb_unanchor_urb(urb);
1401 } else {
1402 usb_mark_last_busy(data->udev);
1403 }
1404
1405 usb_free_urb(urb);
1406 return err;
1407}
1408
1409static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1410{
1411 struct btusb_data *data = hci_get_drvdata(hdev);
1412 unsigned long flags;
1413 bool suspending;
1414
1415 spin_lock_irqsave(&data->txlock, flags);
1416 suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1417 if (!suspending)
1418 data->tx_in_flight++;
1419 spin_unlock_irqrestore(&data->txlock, flags);
1420
1421 if (!suspending)
1422 return submit_tx_urb(hdev, urb);
1423
1424 usb_anchor_urb(urb, &data->deferred);
1425 schedule_work(&data->waker);
1426
1427 usb_free_urb(urb);
1428 return 0;
1429}
1430
1431static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1432{
1433 struct urb *urb;
1434
1435 BT_DBG("%s", hdev->name);
1436
1437 switch (hci_skb_pkt_type(skb)) {
1438 case HCI_COMMAND_PKT:
1439 urb = alloc_ctrl_urb(hdev, skb);
1440 if (IS_ERR(urb))
1441 return PTR_ERR(urb);
1442
1443 hdev->stat.cmd_tx++;
1444 return submit_or_queue_tx_urb(hdev, urb);
1445
1446 case HCI_ACLDATA_PKT:
1447 urb = alloc_bulk_urb(hdev, skb);
1448 if (IS_ERR(urb))
1449 return PTR_ERR(urb);
1450
1451 hdev->stat.acl_tx++;
1452 return submit_or_queue_tx_urb(hdev, urb);
1453
1454 case HCI_SCODATA_PKT:
1455 if (hci_conn_num(hdev, SCO_LINK) < 1)
1456 return -ENODEV;
1457
1458 urb = alloc_isoc_urb(hdev, skb);
1459 if (IS_ERR(urb))
1460 return PTR_ERR(urb);
1461
1462 hdev->stat.sco_tx++;
1463 return submit_tx_urb(hdev, urb);
1464 }
1465
1466 return -EILSEQ;
1467}
1468
1469static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1470{
1471 struct btusb_data *data = hci_get_drvdata(hdev);
1472
1473 BT_DBG("%s evt %d", hdev->name, evt);
1474
1475 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1476 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1477 schedule_work(&data->work);
1478 }
1479}
1480
1481static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1482{
1483 struct btusb_data *data = hci_get_drvdata(hdev);
1484 struct usb_interface *intf = data->isoc;
1485 struct usb_endpoint_descriptor *ep_desc;
1486 int i, err;
1487
1488 if (!data->isoc)
1489 return -ENODEV;
1490
1491 err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1492 if (err < 0) {
1493 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1494 return err;
1495 }
1496
1497 data->isoc_altsetting = altsetting;
1498
1499 data->isoc_tx_ep = NULL;
1500 data->isoc_rx_ep = NULL;
1501
1502 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1503 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1504
1505 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1506 data->isoc_tx_ep = ep_desc;
1507 continue;
1508 }
1509
1510 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1511 data->isoc_rx_ep = ep_desc;
1512 continue;
1513 }
1514 }
1515
1516 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1517 bt_dev_err(hdev, "invalid SCO descriptors");
1518 return -ENODEV;
1519 }
1520
1521 return 0;
1522}
1523
1524static void btusb_work(struct work_struct *work)
1525{
1526 struct btusb_data *data = container_of(work, struct btusb_data, work);
1527 struct hci_dev *hdev = data->hdev;
1528 int new_alts;
1529 int err;
1530
1531 if (data->sco_num > 0) {
1532 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1533 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1534 if (err < 0) {
1535 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1536 usb_kill_anchored_urbs(&data->isoc_anchor);
1537 return;
1538 }
1539
1540 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1541 }
1542
1543 if (hdev->voice_setting & 0x0020) {
1544 static const int alts[3] = { 2, 4, 5 };
1545
1546 new_alts = alts[data->sco_num - 1];
1547 } else {
1548 new_alts = data->sco_num;
1549 }
1550
1551 if (data->isoc_altsetting != new_alts) {
1552 unsigned long flags;
1553
1554 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1555 usb_kill_anchored_urbs(&data->isoc_anchor);
1556
1557 /* When isochronous alternate setting needs to be
1558 * changed, because SCO connection has been added
1559 * or removed, a packet fragment may be left in the
1560 * reassembling state. This could lead to wrongly
1561 * assembled fragments.
1562 *
1563 * Clear outstanding fragment when selecting a new
1564 * alternate setting.
1565 */
1566 spin_lock_irqsave(&data->rxlock, flags);
1567 kfree_skb(data->sco_skb);
1568 data->sco_skb = NULL;
1569 spin_unlock_irqrestore(&data->rxlock, flags);
1570
1571 if (__set_isoc_interface(hdev, new_alts) < 0)
1572 return;
1573 }
1574
1575 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1576 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1577 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1578 else
1579 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1580 }
1581 } else {
1582 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1583 usb_kill_anchored_urbs(&data->isoc_anchor);
1584
1585 __set_isoc_interface(hdev, 0);
1586 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1587 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1588 }
1589}
1590
1591static void btusb_waker(struct work_struct *work)
1592{
1593 struct btusb_data *data = container_of(work, struct btusb_data, waker);
1594 int err;
1595
1596 err = usb_autopm_get_interface(data->intf);
1597 if (err < 0)
1598 return;
1599
1600 usb_autopm_put_interface(data->intf);
1601}
1602
1603static int btusb_setup_bcm92035(struct hci_dev *hdev)
1604{
1605 struct sk_buff *skb;
1606 u8 val = 0x00;
1607
1608 BT_DBG("%s", hdev->name);
1609
1610 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1611 if (IS_ERR(skb))
1612 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
1613 else
1614 kfree_skb(skb);
1615
1616 return 0;
1617}
1618
1619static int btusb_setup_csr(struct hci_dev *hdev)
1620{
1621 struct hci_rp_read_local_version *rp;
1622 struct sk_buff *skb;
1623
1624 BT_DBG("%s", hdev->name);
1625
1626 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1627 HCI_INIT_TIMEOUT);
1628 if (IS_ERR(skb)) {
1629 int err = PTR_ERR(skb);
1630 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
1631 return err;
1632 }
1633
1634 if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1635 bt_dev_err(hdev, "CSR: Local version length mismatch");
1636 kfree_skb(skb);
1637 return -EIO;
1638 }
1639
1640 rp = (struct hci_rp_read_local_version *)skb->data;
1641
1642 /* Detect controllers which aren't real CSR ones. */
1643 if (le16_to_cpu(rp->manufacturer) != 10 ||
1644 le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1645 /* Clear the reset quirk since this is not an actual
1646 * early Bluetooth 1.1 device from CSR.
1647 */
1648 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1649
1650 /* These fake CSR controllers have all a broken
1651 * stored link key handling and so just disable it.
1652 */
1653 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1654 }
1655
1656 kfree_skb(skb);
1657
1658 return 0;
1659}
1660
1661static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1662 struct intel_version *ver)
1663{
1664 const struct firmware *fw;
1665 char fwname[64];
1666 int ret;
1667
1668 snprintf(fwname, sizeof(fwname),
1669 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1670 ver->hw_platform, ver->hw_variant, ver->hw_revision,
1671 ver->fw_variant, ver->fw_revision, ver->fw_build_num,
1672 ver->fw_build_ww, ver->fw_build_yy);
1673
1674 ret = request_firmware(&fw, fwname, &hdev->dev);
1675 if (ret < 0) {
1676 if (ret == -EINVAL) {
1677 bt_dev_err(hdev, "Intel firmware file request failed (%d)",
1678 ret);
1679 return NULL;
1680 }
1681
1682 bt_dev_err(hdev, "failed to open Intel firmware file: %s (%d)",
1683 fwname, ret);
1684
1685 /* If the correct firmware patch file is not found, use the
1686 * default firmware patch file instead
1687 */
1688 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1689 ver->hw_platform, ver->hw_variant);
1690 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1691 bt_dev_err(hdev, "failed to open default fw file: %s",
1692 fwname);
1693 return NULL;
1694 }
1695 }
1696
1697 bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname);
1698
1699 return fw;
1700}
1701
1702static int btusb_setup_intel_patching(struct hci_dev *hdev,
1703 const struct firmware *fw,
1704 const u8 **fw_ptr, int *disable_patch)
1705{
1706 struct sk_buff *skb;
1707 struct hci_command_hdr *cmd;
1708 const u8 *cmd_param;
1709 struct hci_event_hdr *evt = NULL;
1710 const u8 *evt_param = NULL;
1711 int remain = fw->size - (*fw_ptr - fw->data);
1712
1713 /* The first byte indicates the types of the patch command or event.
1714 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1715 * in the current firmware buffer doesn't start with 0x01 or
1716 * the size of remain buffer is smaller than HCI command header,
1717 * the firmware file is corrupted and it should stop the patching
1718 * process.
1719 */
1720 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1721 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd read");
1722 return -EINVAL;
1723 }
1724 (*fw_ptr)++;
1725 remain--;
1726
1727 cmd = (struct hci_command_hdr *)(*fw_ptr);
1728 *fw_ptr += sizeof(*cmd);
1729 remain -= sizeof(*cmd);
1730
1731 /* Ensure that the remain firmware data is long enough than the length
1732 * of command parameter. If not, the firmware file is corrupted.
1733 */
1734 if (remain < cmd->plen) {
1735 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd len");
1736 return -EFAULT;
1737 }
1738
1739 /* If there is a command that loads a patch in the firmware
1740 * file, then enable the patch upon success, otherwise just
1741 * disable the manufacturer mode, for example patch activation
1742 * is not required when the default firmware patch file is used
1743 * because there are no patch data to load.
1744 */
1745 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1746 *disable_patch = 0;
1747
1748 cmd_param = *fw_ptr;
1749 *fw_ptr += cmd->plen;
1750 remain -= cmd->plen;
1751
1752 /* This reads the expected events when the above command is sent to the
1753 * device. Some vendor commands expects more than one events, for
1754 * example command status event followed by vendor specific event.
1755 * For this case, it only keeps the last expected event. so the command
1756 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1757 * last expected event.
1758 */
1759 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1760 (*fw_ptr)++;
1761 remain--;
1762
1763 evt = (struct hci_event_hdr *)(*fw_ptr);
1764 *fw_ptr += sizeof(*evt);
1765 remain -= sizeof(*evt);
1766
1767 if (remain < evt->plen) {
1768 bt_dev_err(hdev, "Intel fw corrupted: invalid evt len");
1769 return -EFAULT;
1770 }
1771
1772 evt_param = *fw_ptr;
1773 *fw_ptr += evt->plen;
1774 remain -= evt->plen;
1775 }
1776
1777 /* Every HCI commands in the firmware file has its correspond event.
1778 * If event is not found or remain is smaller than zero, the firmware
1779 * file is corrupted.
1780 */
1781 if (!evt || !evt_param || remain < 0) {
1782 bt_dev_err(hdev, "Intel fw corrupted: invalid evt read");
1783 return -EFAULT;
1784 }
1785
1786 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1787 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1788 if (IS_ERR(skb)) {
1789 bt_dev_err(hdev, "sending Intel patch command (0x%4.4x) failed (%ld)",
1790 cmd->opcode, PTR_ERR(skb));
1791 return PTR_ERR(skb);
1792 }
1793
1794 /* It ensures that the returned event matches the event data read from
1795 * the firmware file. At fist, it checks the length and then
1796 * the contents of the event.
1797 */
1798 if (skb->len != evt->plen) {
1799 bt_dev_err(hdev, "mismatch event length (opcode 0x%4.4x)",
1800 le16_to_cpu(cmd->opcode));
1801 kfree_skb(skb);
1802 return -EFAULT;
1803 }
1804
1805 if (memcmp(skb->data, evt_param, evt->plen)) {
1806 bt_dev_err(hdev, "mismatch event parameter (opcode 0x%4.4x)",
1807 le16_to_cpu(cmd->opcode));
1808 kfree_skb(skb);
1809 return -EFAULT;
1810 }
1811 kfree_skb(skb);
1812
1813 return 0;
1814}
1815
1816static int btusb_setup_intel(struct hci_dev *hdev)
1817{
1818 struct sk_buff *skb;
1819 const struct firmware *fw;
1820 const u8 *fw_ptr;
1821 int disable_patch, err;
1822 struct intel_version ver;
1823
1824 BT_DBG("%s", hdev->name);
1825
1826 /* The controller has a bug with the first HCI command sent to it
1827 * returning number of completed commands as zero. This would stall the
1828 * command processing in the Bluetooth core.
1829 *
1830 * As a workaround, send HCI Reset command first which will reset the
1831 * number of completed commands and allow normal command processing
1832 * from now on.
1833 */
1834 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1835 if (IS_ERR(skb)) {
1836 bt_dev_err(hdev, "sending initial HCI reset command failed (%ld)",
1837 PTR_ERR(skb));
1838 return PTR_ERR(skb);
1839 }
1840 kfree_skb(skb);
1841
1842 /* Read Intel specific controller version first to allow selection of
1843 * which firmware file to load.
1844 *
1845 * The returned information are hardware variant and revision plus
1846 * firmware variant, revision and build number.
1847 */
1848 err = btintel_read_version(hdev, &ver);
1849 if (err)
1850 return err;
1851
1852 bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1853 ver.hw_platform, ver.hw_variant, ver.hw_revision,
1854 ver.fw_variant, ver.fw_revision, ver.fw_build_num,
1855 ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
1856
1857 /* fw_patch_num indicates the version of patch the device currently
1858 * have. If there is no patch data in the device, it is always 0x00.
1859 * So, if it is other than 0x00, no need to patch the device again.
1860 */
1861 if (ver.fw_patch_num) {
1862 bt_dev_info(hdev, "Intel device is already patched. "
1863 "patch num: %02x", ver.fw_patch_num);
1864 goto complete;
1865 }
1866
1867 /* Opens the firmware patch file based on the firmware version read
1868 * from the controller. If it fails to open the matching firmware
1869 * patch file, it tries to open the default firmware patch file.
1870 * If no patch file is found, allow the device to operate without
1871 * a patch.
1872 */
1873 fw = btusb_setup_intel_get_fw(hdev, &ver);
1874 if (!fw)
1875 goto complete;
1876 fw_ptr = fw->data;
1877
1878 /* Enable the manufacturer mode of the controller.
1879 * Only while this mode is enabled, the driver can download the
1880 * firmware patch data and configuration parameters.
1881 */
1882 err = btintel_enter_mfg(hdev);
1883 if (err) {
1884 release_firmware(fw);
1885 return err;
1886 }
1887
1888 disable_patch = 1;
1889
1890 /* The firmware data file consists of list of Intel specific HCI
1891 * commands and its expected events. The first byte indicates the
1892 * type of the message, either HCI command or HCI event.
1893 *
1894 * It reads the command and its expected event from the firmware file,
1895 * and send to the controller. Once __hci_cmd_sync_ev() returns,
1896 * the returned event is compared with the event read from the firmware
1897 * file and it will continue until all the messages are downloaded to
1898 * the controller.
1899 *
1900 * Once the firmware patching is completed successfully,
1901 * the manufacturer mode is disabled with reset and activating the
1902 * downloaded patch.
1903 *
1904 * If the firmware patching fails, the manufacturer mode is
1905 * disabled with reset and deactivating the patch.
1906 *
1907 * If the default patch file is used, no reset is done when disabling
1908 * the manufacturer.
1909 */
1910 while (fw->size > fw_ptr - fw->data) {
1911 int ret;
1912
1913 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1914 &disable_patch);
1915 if (ret < 0)
1916 goto exit_mfg_deactivate;
1917 }
1918
1919 release_firmware(fw);
1920
1921 if (disable_patch)
1922 goto exit_mfg_disable;
1923
1924 /* Patching completed successfully and disable the manufacturer mode
1925 * with reset and activate the downloaded firmware patches.
1926 */
1927 err = btintel_exit_mfg(hdev, true, true);
1928 if (err)
1929 return err;
1930
1931 bt_dev_info(hdev, "Intel firmware patch completed and activated");
1932
1933 goto complete;
1934
1935exit_mfg_disable:
1936 /* Disable the manufacturer mode without reset */
1937 err = btintel_exit_mfg(hdev, false, false);
1938 if (err)
1939 return err;
1940
1941 bt_dev_info(hdev, "Intel firmware patch completed");
1942
1943 goto complete;
1944
1945exit_mfg_deactivate:
1946 release_firmware(fw);
1947
1948 /* Patching failed. Disable the manufacturer mode with reset and
1949 * deactivate the downloaded firmware patches.
1950 */
1951 err = btintel_exit_mfg(hdev, true, false);
1952 if (err)
1953 return err;
1954
1955 bt_dev_info(hdev, "Intel firmware patch completed and deactivated");
1956
1957complete:
1958 /* Set the event mask for Intel specific vendor events. This enables
1959 * a few extra events that are useful during general operation.
1960 */
1961 btintel_set_event_mask_mfg(hdev, false);
1962
1963 btintel_check_bdaddr(hdev);
1964 return 0;
1965}
1966
1967static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1968{
1969 struct sk_buff *skb;
1970 struct hci_event_hdr *hdr;
1971 struct hci_ev_cmd_complete *evt;
1972
1973 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
1974 if (!skb)
1975 return -ENOMEM;
1976
1977 hdr = skb_put(skb, sizeof(*hdr));
1978 hdr->evt = HCI_EV_CMD_COMPLETE;
1979 hdr->plen = sizeof(*evt) + 1;
1980
1981 evt = skb_put(skb, sizeof(*evt));
1982 evt->ncmd = 0x01;
1983 evt->opcode = cpu_to_le16(opcode);
1984
1985 skb_put_u8(skb, 0x00);
1986
1987 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
1988
1989 return hci_recv_frame(hdev, skb);
1990}
1991
1992static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1993 int count)
1994{
1995 /* When the device is in bootloader mode, then it can send
1996 * events via the bulk endpoint. These events are treated the
1997 * same way as the ones received from the interrupt endpoint.
1998 */
1999 if (test_bit(BTUSB_BOOTLOADER, &data->flags))
2000 return btusb_recv_intr(data, buffer, count);
2001
2002 return btusb_recv_bulk(data, buffer, count);
2003}
2004
2005static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
2006 unsigned int len)
2007{
2008 const struct intel_bootup *evt = ptr;
2009
2010 if (len != sizeof(*evt))
2011 return;
2012
2013 if (test_and_clear_bit(BTUSB_BOOTING, &data->flags))
2014 wake_up_bit(&data->flags, BTUSB_BOOTING);
2015}
2016
2017static void btusb_intel_secure_send_result(struct btusb_data *data,
2018 const void *ptr, unsigned int len)
2019{
2020 const struct intel_secure_send_result *evt = ptr;
2021
2022 if (len != sizeof(*evt))
2023 return;
2024
2025 if (evt->result)
2026 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
2027
2028 if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
2029 test_bit(BTUSB_FIRMWARE_LOADED, &data->flags))
2030 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
2031}
2032
2033static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2034{
2035 struct btusb_data *data = hci_get_drvdata(hdev);
2036
2037 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2038 struct hci_event_hdr *hdr = (void *)skb->data;
2039
2040 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2041 hdr->plen > 0) {
2042 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2043 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2044
2045 switch (skb->data[2]) {
2046 case 0x02:
2047 /* When switching to the operational firmware
2048 * the device sends a vendor specific event
2049 * indicating that the bootup completed.
2050 */
2051 btusb_intel_bootup(data, ptr, len);
2052 break;
2053 case 0x06:
2054 /* When the firmware loading completes the
2055 * device sends out a vendor specific event
2056 * indicating the result of the firmware
2057 * loading.
2058 */
2059 btusb_intel_secure_send_result(data, ptr, len);
2060 break;
2061 }
2062 }
2063 }
2064
2065 return hci_recv_frame(hdev, skb);
2066}
2067
2068static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2069{
2070 struct btusb_data *data = hci_get_drvdata(hdev);
2071 struct urb *urb;
2072
2073 BT_DBG("%s", hdev->name);
2074
2075 switch (hci_skb_pkt_type(skb)) {
2076 case HCI_COMMAND_PKT:
2077 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2078 struct hci_command_hdr *cmd = (void *)skb->data;
2079 __u16 opcode = le16_to_cpu(cmd->opcode);
2080
2081 /* When in bootloader mode and the command 0xfc09
2082 * is received, it needs to be send down the
2083 * bulk endpoint. So allocate a bulk URB instead.
2084 */
2085 if (opcode == 0xfc09)
2086 urb = alloc_bulk_urb(hdev, skb);
2087 else
2088 urb = alloc_ctrl_urb(hdev, skb);
2089
2090 /* When the 0xfc01 command is issued to boot into
2091 * the operational firmware, it will actually not
2092 * send a command complete event. To keep the flow
2093 * control working inject that event here.
2094 */
2095 if (opcode == 0xfc01)
2096 inject_cmd_complete(hdev, opcode);
2097 } else {
2098 urb = alloc_ctrl_urb(hdev, skb);
2099 }
2100 if (IS_ERR(urb))
2101 return PTR_ERR(urb);
2102
2103 hdev->stat.cmd_tx++;
2104 return submit_or_queue_tx_urb(hdev, urb);
2105
2106 case HCI_ACLDATA_PKT:
2107 urb = alloc_bulk_urb(hdev, skb);
2108 if (IS_ERR(urb))
2109 return PTR_ERR(urb);
2110
2111 hdev->stat.acl_tx++;
2112 return submit_or_queue_tx_urb(hdev, urb);
2113
2114 case HCI_SCODATA_PKT:
2115 if (hci_conn_num(hdev, SCO_LINK) < 1)
2116 return -ENODEV;
2117
2118 urb = alloc_isoc_urb(hdev, skb);
2119 if (IS_ERR(urb))
2120 return PTR_ERR(urb);
2121
2122 hdev->stat.sco_tx++;
2123 return submit_tx_urb(hdev, urb);
2124 }
2125
2126 return -EILSEQ;
2127}
2128
2129static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver,
2130 struct intel_boot_params *params,
2131 char *fw_name, size_t len,
2132 const char *suffix)
2133{
2134 switch (ver->hw_variant) {
2135 case 0x0b: /* SfP */
2136 case 0x0c: /* WsP */
2137 snprintf(fw_name, len, "intel/ibt-%u-%u.%s",
2138 le16_to_cpu(ver->hw_variant),
2139 le16_to_cpu(params->dev_revid),
2140 suffix);
2141 break;
2142 case 0x11: /* JfP */
2143 case 0x12: /* ThP */
2144 case 0x13: /* HrP */
2145 case 0x14: /* CcP */
2146 snprintf(fw_name, len, "intel/ibt-%u-%u-%u.%s",
2147 le16_to_cpu(ver->hw_variant),
2148 le16_to_cpu(ver->hw_revision),
2149 le16_to_cpu(ver->fw_revision),
2150 suffix);
2151 break;
2152 default:
2153 return false;
2154 }
2155 return true;
2156}
2157
2158static int btusb_setup_intel_new(struct hci_dev *hdev)
2159{
2160 struct btusb_data *data = hci_get_drvdata(hdev);
2161 struct intel_version ver;
2162 struct intel_boot_params params;
2163 const struct firmware *fw;
2164 u32 boot_param;
2165 char fwname[64];
2166 ktime_t calltime, delta, rettime;
2167 unsigned long long duration;
2168 int err;
2169
2170 BT_DBG("%s", hdev->name);
2171
2172 /* Set the default boot parameter to 0x0 and it is updated to
2173 * SKU specific boot parameter after reading Intel_Write_Boot_Params
2174 * command while downloading the firmware.
2175 */
2176 boot_param = 0x00000000;
2177
2178 calltime = ktime_get();
2179
2180 /* Read the Intel version information to determine if the device
2181 * is in bootloader mode or if it already has operational firmware
2182 * loaded.
2183 */
2184 err = btintel_read_version(hdev, &ver);
2185 if (err)
2186 return err;
2187
2188 /* The hardware platform number has a fixed value of 0x37 and
2189 * for now only accept this single value.
2190 */
2191 if (ver.hw_platform != 0x37) {
2192 bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)",
2193 ver.hw_platform);
2194 return -EINVAL;
2195 }
2196
2197 /* Check for supported iBT hardware variants of this firmware
2198 * loading method.
2199 *
2200 * This check has been put in place to ensure correct forward
2201 * compatibility options when newer hardware variants come along.
2202 */
2203 switch (ver.hw_variant) {
2204 case 0x0b: /* SfP */
2205 case 0x0c: /* WsP */
2206 case 0x11: /* JfP */
2207 case 0x12: /* ThP */
2208 case 0x13: /* HrP */
2209 case 0x14: /* CcP */
2210 break;
2211 default:
2212 bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",
2213 ver.hw_variant);
2214 return -EINVAL;
2215 }
2216
2217 btintel_version_info(hdev, &ver);
2218
2219 /* The firmware variant determines if the device is in bootloader
2220 * mode or is running operational firmware. The value 0x06 identifies
2221 * the bootloader and the value 0x23 identifies the operational
2222 * firmware.
2223 *
2224 * When the operational firmware is already present, then only
2225 * the check for valid Bluetooth device address is needed. This
2226 * determines if the device will be added as configured or
2227 * unconfigured controller.
2228 *
2229 * It is not possible to use the Secure Boot Parameters in this
2230 * case since that command is only available in bootloader mode.
2231 */
2232 if (ver.fw_variant == 0x23) {
2233 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2234 btintel_check_bdaddr(hdev);
2235 return 0;
2236 }
2237
2238 /* If the device is not in bootloader mode, then the only possible
2239 * choice is to return an error and abort the device initialization.
2240 */
2241 if (ver.fw_variant != 0x06) {
2242 bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)",
2243 ver.fw_variant);
2244 return -ENODEV;
2245 }
2246
2247 /* Read the secure boot parameters to identify the operating
2248 * details of the bootloader.
2249 */
2250 err = btintel_read_boot_params(hdev, ¶ms);
2251 if (err)
2252 return err;
2253
2254 /* It is required that every single firmware fragment is acknowledged
2255 * with a command complete event. If the boot parameters indicate
2256 * that this bootloader does not send them, then abort the setup.
2257 */
2258 if (params.limited_cce != 0x00) {
2259 bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",
2260 params.limited_cce);
2261 return -EINVAL;
2262 }
2263
2264 /* If the OTP has no valid Bluetooth device address, then there will
2265 * also be no valid address for the operational firmware.
2266 */
2267 if (!bacmp(¶ms.otp_bdaddr, BDADDR_ANY)) {
2268 bt_dev_info(hdev, "No device address configured");
2269 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2270 }
2271
2272 /* With this Intel bootloader only the hardware variant and device
2273 * revision information are used to select the right firmware for SfP
2274 * and WsP.
2275 *
2276 * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2277 *
2278 * Currently the supported hardware variants are:
2279 * 11 (0x0b) for iBT3.0 (LnP/SfP)
2280 * 12 (0x0c) for iBT3.5 (WsP)
2281 *
2282 * For ThP/JfP and for future SKU's, the FW name varies based on HW
2283 * variant, HW revision and FW revision, as these are dependent on CNVi
2284 * and RF Combination.
2285 *
2286 * 17 (0x11) for iBT3.5 (JfP)
2287 * 18 (0x12) for iBT3.5 (ThP)
2288 *
2289 * The firmware file name for these will be
2290 * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi.
2291 *
2292 */
2293 err = btusb_setup_intel_new_get_fw_name(&ver, ¶ms, fwname,
2294 sizeof(fwname), "sfi");
2295 if (!err) {
2296 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2297 return -EINVAL;
2298 }
2299
2300 err = request_firmware(&fw, fwname, &hdev->dev);
2301 if (err < 0) {
2302 bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err);
2303 return err;
2304 }
2305
2306 bt_dev_info(hdev, "Found device firmware: %s", fwname);
2307
2308 /* Save the DDC file name for later use to apply once the firmware
2309 * downloading is done.
2310 */
2311 err = btusb_setup_intel_new_get_fw_name(&ver, ¶ms, fwname,
2312 sizeof(fwname), "ddc");
2313 if (!err) {
2314 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2315 return -EINVAL;
2316 }
2317
2318 if (fw->size < 644) {
2319 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2320 fw->size);
2321 err = -EBADF;
2322 goto done;
2323 }
2324
2325 set_bit(BTUSB_DOWNLOADING, &data->flags);
2326
2327 /* Start firmware downloading and get boot parameter */
2328 err = btintel_download_firmware(hdev, fw, &boot_param);
2329 if (err < 0)
2330 goto done;
2331
2332 set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2333
2334 bt_dev_info(hdev, "Waiting for firmware download to complete");
2335
2336 /* Before switching the device into operational mode and with that
2337 * booting the loaded firmware, wait for the bootloader notification
2338 * that all fragments have been successfully received.
2339 *
2340 * When the event processing receives the notification, then the
2341 * BTUSB_DOWNLOADING flag will be cleared.
2342 *
2343 * The firmware loading should not take longer than 5 seconds
2344 * and thus just timeout if that happens and fail the setup
2345 * of this device.
2346 */
2347 err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2348 TASK_INTERRUPTIBLE,
2349 msecs_to_jiffies(5000));
2350 if (err == -EINTR) {
2351 bt_dev_err(hdev, "Firmware loading interrupted");
2352 goto done;
2353 }
2354
2355 if (err) {
2356 bt_dev_err(hdev, "Firmware loading timeout");
2357 err = -ETIMEDOUT;
2358 goto done;
2359 }
2360
2361 if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2362 bt_dev_err(hdev, "Firmware loading failed");
2363 err = -ENOEXEC;
2364 goto done;
2365 }
2366
2367 rettime = ktime_get();
2368 delta = ktime_sub(rettime, calltime);
2369 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2370
2371 bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2372
2373done:
2374 release_firmware(fw);
2375
2376 if (err < 0)
2377 return err;
2378
2379 calltime = ktime_get();
2380
2381 set_bit(BTUSB_BOOTING, &data->flags);
2382
2383 err = btintel_send_intel_reset(hdev, boot_param);
2384 if (err)
2385 return err;
2386
2387 /* The bootloader will not indicate when the device is ready. This
2388 * is done by the operational firmware sending bootup notification.
2389 *
2390 * Booting into operational firmware should not take longer than
2391 * 1 second. However if that happens, then just fail the setup
2392 * since something went wrong.
2393 */
2394 bt_dev_info(hdev, "Waiting for device to boot");
2395
2396 err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2397 TASK_INTERRUPTIBLE,
2398 msecs_to_jiffies(1000));
2399
2400 if (err == -EINTR) {
2401 bt_dev_err(hdev, "Device boot interrupted");
2402 return -EINTR;
2403 }
2404
2405 if (err) {
2406 bt_dev_err(hdev, "Device boot timeout");
2407 return -ETIMEDOUT;
2408 }
2409
2410 rettime = ktime_get();
2411 delta = ktime_sub(rettime, calltime);
2412 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2413
2414 bt_dev_info(hdev, "Device booted in %llu usecs", duration);
2415
2416 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2417
2418 /* Once the device is running in operational mode, it needs to apply
2419 * the device configuration (DDC) parameters.
2420 *
2421 * The device can work without DDC parameters, so even if it fails
2422 * to load the file, no need to fail the setup.
2423 */
2424 btintel_load_ddc_config(hdev, fwname);
2425
2426 /* Set the event mask for Intel specific vendor events. This enables
2427 * a few extra events that are useful during general operation. It
2428 * does not enable any debugging related events.
2429 *
2430 * The device will function correctly without these events enabled
2431 * and thus no need to fail the setup.
2432 */
2433 btintel_set_event_mask(hdev, false);
2434
2435 return 0;
2436}
2437
2438static int btusb_shutdown_intel(struct hci_dev *hdev)
2439{
2440 struct sk_buff *skb;
2441 long ret;
2442
2443 /* In the shutdown sequence where Bluetooth is turned off followed
2444 * by WiFi being turned off, turning WiFi back on causes issue with
2445 * the RF calibration.
2446 *
2447 * To ensure that any RF activity has been stopped, issue HCI Reset
2448 * command to clear all ongoing activity including advertising,
2449 * scanning etc.
2450 */
2451 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2452 if (IS_ERR(skb)) {
2453 ret = PTR_ERR(skb);
2454 bt_dev_err(hdev, "HCI reset during shutdown failed");
2455 return ret;
2456 }
2457 kfree_skb(skb);
2458
2459 /* Some platforms have an issue with BT LED when the interface is
2460 * down or BT radio is turned off, which takes 5 seconds to BT LED
2461 * goes off. This command turns off the BT LED immediately.
2462 */
2463 skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2464 if (IS_ERR(skb)) {
2465 ret = PTR_ERR(skb);
2466 bt_dev_err(hdev, "turning off Intel device LED failed");
2467 return ret;
2468 }
2469 kfree_skb(skb);
2470
2471 return 0;
2472}
2473
2474static int btusb_shutdown_intel_new(struct hci_dev *hdev)
2475{
2476 struct sk_buff *skb;
2477
2478 /* Send HCI Reset to the controller to stop any BT activity which
2479 * were triggered. This will help to save power and maintain the
2480 * sync b/w Host and controller
2481 */
2482 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2483 if (IS_ERR(skb)) {
2484 bt_dev_err(hdev, "HCI reset during shutdown failed");
2485 return PTR_ERR(skb);
2486 }
2487 kfree_skb(skb);
2488
2489 return 0;
2490}
2491
2492#ifdef CONFIG_BT_HCIBTUSB_MTK
2493
2494#define FIRMWARE_MT7663 "mediatek/mt7663pr2h.bin"
2495#define FIRMWARE_MT7668 "mediatek/mt7668pr2h.bin"
2496
2497#define HCI_WMT_MAX_EVENT_SIZE 64
2498
2499enum {
2500 BTMTK_WMT_PATCH_DWNLD = 0x1,
2501 BTMTK_WMT_FUNC_CTRL = 0x6,
2502 BTMTK_WMT_RST = 0x7,
2503 BTMTK_WMT_SEMAPHORE = 0x17,
2504};
2505
2506enum {
2507 BTMTK_WMT_INVALID,
2508 BTMTK_WMT_PATCH_UNDONE,
2509 BTMTK_WMT_PATCH_DONE,
2510 BTMTK_WMT_ON_UNDONE,
2511 BTMTK_WMT_ON_DONE,
2512 BTMTK_WMT_ON_PROGRESS,
2513};
2514
2515struct btmtk_wmt_hdr {
2516 u8 dir;
2517 u8 op;
2518 __le16 dlen;
2519 u8 flag;
2520} __packed;
2521
2522struct btmtk_hci_wmt_cmd {
2523 struct btmtk_wmt_hdr hdr;
2524 u8 data[256];
2525} __packed;
2526
2527struct btmtk_hci_wmt_evt {
2528 struct hci_event_hdr hhdr;
2529 struct btmtk_wmt_hdr whdr;
2530} __packed;
2531
2532struct btmtk_hci_wmt_evt_funcc {
2533 struct btmtk_hci_wmt_evt hwhdr;
2534 __be16 status;
2535} __packed;
2536
2537struct btmtk_tci_sleep {
2538 u8 mode;
2539 __le16 duration;
2540 __le16 host_duration;
2541 u8 host_wakeup_pin;
2542 u8 time_compensation;
2543} __packed;
2544
2545struct btmtk_hci_wmt_params {
2546 u8 op;
2547 u8 flag;
2548 u16 dlen;
2549 const void *data;
2550 u32 *status;
2551};
2552
2553static void btusb_mtk_wmt_recv(struct urb *urb)
2554{
2555 struct hci_dev *hdev = urb->context;
2556 struct btusb_data *data = hci_get_drvdata(hdev);
2557 struct hci_event_hdr *hdr;
2558 struct sk_buff *skb;
2559 int err;
2560
2561 if (urb->status == 0 && urb->actual_length > 0) {
2562 hdev->stat.byte_rx += urb->actual_length;
2563
2564 /* WMT event shouldn't be fragmented and the size should be
2565 * less than HCI_WMT_MAX_EVENT_SIZE.
2566 */
2567 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
2568 if (!skb) {
2569 hdev->stat.err_rx++;
2570 goto err_out;
2571 }
2572
2573 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2574 skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
2575
2576 hdr = (void *)skb->data;
2577 /* Fix up the vendor event id with 0xff for vendor specific
2578 * instead of 0xe4 so that event send via monitoring socket can
2579 * be parsed properly.
2580 */
2581 hdr->evt = 0xff;
2582
2583 /* When someone waits for the WMT event, the skb is being cloned
2584 * and being processed the events from there then.
2585 */
2586 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
2587 data->evt_skb = skb_clone(skb, GFP_KERNEL);
2588 if (!data->evt_skb)
2589 goto err_out;
2590 }
2591
2592 err = hci_recv_frame(hdev, skb);
2593 if (err < 0)
2594 goto err_free_skb;
2595
2596 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
2597 &data->flags)) {
2598 /* Barrier to sync with other CPUs */
2599 smp_mb__after_atomic();
2600 wake_up_bit(&data->flags,
2601 BTUSB_TX_WAIT_VND_EVT);
2602 }
2603err_out:
2604 return;
2605err_free_skb:
2606 kfree_skb(data->evt_skb);
2607 data->evt_skb = NULL;
2608 return;
2609 } else if (urb->status == -ENOENT) {
2610 /* Avoid suspend failed when usb_kill_urb */
2611 return;
2612 }
2613
2614 usb_mark_last_busy(data->udev);
2615
2616 /* The URB complete handler is still called with urb->actual_length = 0
2617 * when the event is not available, so we should keep re-submitting
2618 * URB until WMT event returns, Also, It's necessary to wait some time
2619 * between the two consecutive control URBs to relax the target device
2620 * to generate the event. Otherwise, the WMT event cannot return from
2621 * the device successfully.
2622 */
2623 udelay(100);
2624
2625 usb_anchor_urb(urb, &data->ctrl_anchor);
2626 err = usb_submit_urb(urb, GFP_ATOMIC);
2627 if (err < 0) {
2628 /* -EPERM: urb is being killed;
2629 * -ENODEV: device got disconnected
2630 */
2631 if (err != -EPERM && err != -ENODEV)
2632 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
2633 urb, -err);
2634 usb_unanchor_urb(urb);
2635 }
2636}
2637
2638static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
2639{
2640 struct btusb_data *data = hci_get_drvdata(hdev);
2641 struct usb_ctrlrequest *dr;
2642 unsigned char *buf;
2643 int err, size = 64;
2644 unsigned int pipe;
2645 struct urb *urb;
2646
2647 urb = usb_alloc_urb(0, GFP_KERNEL);
2648 if (!urb)
2649 return -ENOMEM;
2650
2651 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
2652 if (!dr) {
2653 usb_free_urb(urb);
2654 return -ENOMEM;
2655 }
2656
2657 dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
2658 dr->bRequest = 1;
2659 dr->wIndex = cpu_to_le16(0);
2660 dr->wValue = cpu_to_le16(48);
2661 dr->wLength = cpu_to_le16(size);
2662
2663 buf = kmalloc(size, GFP_KERNEL);
2664 if (!buf) {
2665 kfree(dr);
2666 return -ENOMEM;
2667 }
2668
2669 pipe = usb_rcvctrlpipe(data->udev, 0);
2670
2671 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
2672 buf, size, btusb_mtk_wmt_recv, hdev);
2673
2674 urb->transfer_flags |= URB_FREE_BUFFER;
2675
2676 usb_anchor_urb(urb, &data->ctrl_anchor);
2677 err = usb_submit_urb(urb, GFP_KERNEL);
2678 if (err < 0) {
2679 if (err != -EPERM && err != -ENODEV)
2680 bt_dev_err(hdev, "urb %p submission failed (%d)",
2681 urb, -err);
2682 usb_unanchor_urb(urb);
2683 }
2684
2685 usb_free_urb(urb);
2686
2687 return err;
2688}
2689
2690static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
2691 struct btmtk_hci_wmt_params *wmt_params)
2692{
2693 struct btusb_data *data = hci_get_drvdata(hdev);
2694 struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
2695 u32 hlen, status = BTMTK_WMT_INVALID;
2696 struct btmtk_hci_wmt_evt *wmt_evt;
2697 struct btmtk_hci_wmt_cmd wc;
2698 struct btmtk_wmt_hdr *hdr;
2699 int err;
2700
2701 /* Submit control IN URB on demand to process the WMT event */
2702 err = btusb_mtk_submit_wmt_recv_urb(hdev);
2703 if (err < 0)
2704 return err;
2705
2706 /* Send the WMT command and wait until the WMT event returns */
2707 hlen = sizeof(*hdr) + wmt_params->dlen;
2708 if (hlen > 255)
2709 return -EINVAL;
2710
2711 hdr = (struct btmtk_wmt_hdr *)&wc;
2712 hdr->dir = 1;
2713 hdr->op = wmt_params->op;
2714 hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
2715 hdr->flag = wmt_params->flag;
2716 memcpy(wc.data, wmt_params->data, wmt_params->dlen);
2717
2718 set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2719
2720 err = __hci_cmd_send(hdev, 0xfc6f, hlen, &wc);
2721
2722 if (err < 0) {
2723 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2724 return err;
2725 }
2726
2727 /* The vendor specific WMT commands are all answered by a vendor
2728 * specific event and will have the Command Status or Command
2729 * Complete as with usual HCI command flow control.
2730 *
2731 * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
2732 * state to be cleared. The driver specific event receive routine
2733 * will clear that state and with that indicate completion of the
2734 * WMT command.
2735 */
2736 err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
2737 TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
2738 if (err == -EINTR) {
2739 bt_dev_err(hdev, "Execution of wmt command interrupted");
2740 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2741 return err;
2742 }
2743
2744 if (err) {
2745 bt_dev_err(hdev, "Execution of wmt command timed out");
2746 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2747 return -ETIMEDOUT;
2748 }
2749
2750 /* Parse and handle the return WMT event */
2751 wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
2752 if (wmt_evt->whdr.op != hdr->op) {
2753 bt_dev_err(hdev, "Wrong op received %d expected %d",
2754 wmt_evt->whdr.op, hdr->op);
2755 err = -EIO;
2756 goto err_free_skb;
2757 }
2758
2759 switch (wmt_evt->whdr.op) {
2760 case BTMTK_WMT_SEMAPHORE:
2761 if (wmt_evt->whdr.flag == 2)
2762 status = BTMTK_WMT_PATCH_UNDONE;
2763 else
2764 status = BTMTK_WMT_PATCH_DONE;
2765 break;
2766 case BTMTK_WMT_FUNC_CTRL:
2767 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
2768 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
2769 status = BTMTK_WMT_ON_DONE;
2770 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
2771 status = BTMTK_WMT_ON_PROGRESS;
2772 else
2773 status = BTMTK_WMT_ON_UNDONE;
2774 break;
2775 }
2776
2777 if (wmt_params->status)
2778 *wmt_params->status = status;
2779
2780err_free_skb:
2781 kfree_skb(data->evt_skb);
2782 data->evt_skb = NULL;
2783
2784 return err;
2785}
2786
2787static int btusb_mtk_setup_firmware(struct hci_dev *hdev, const char *fwname)
2788{
2789 struct btmtk_hci_wmt_params wmt_params;
2790 const struct firmware *fw;
2791 const u8 *fw_ptr;
2792 size_t fw_size;
2793 int err, dlen;
2794 u8 flag;
2795
2796 err = request_firmware(&fw, fwname, &hdev->dev);
2797 if (err < 0) {
2798 bt_dev_err(hdev, "Failed to load firmware file (%d)", err);
2799 return err;
2800 }
2801
2802 fw_ptr = fw->data;
2803 fw_size = fw->size;
2804
2805 /* The size of patch header is 30 bytes, should be skip */
2806 if (fw_size < 30) {
2807 err = -EINVAL;
2808 goto err_release_fw;
2809 }
2810
2811 fw_size -= 30;
2812 fw_ptr += 30;
2813 flag = 1;
2814
2815 wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
2816 wmt_params.status = NULL;
2817
2818 while (fw_size > 0) {
2819 dlen = min_t(int, 250, fw_size);
2820
2821 /* Tell deivice the position in sequence */
2822 if (fw_size - dlen <= 0)
2823 flag = 3;
2824 else if (fw_size < fw->size - 30)
2825 flag = 2;
2826
2827 wmt_params.flag = flag;
2828 wmt_params.dlen = dlen;
2829 wmt_params.data = fw_ptr;
2830
2831 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2832 if (err < 0) {
2833 bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
2834 err);
2835 goto err_release_fw;
2836 }
2837
2838 fw_size -= dlen;
2839 fw_ptr += dlen;
2840 }
2841
2842 wmt_params.op = BTMTK_WMT_RST;
2843 wmt_params.flag = 4;
2844 wmt_params.dlen = 0;
2845 wmt_params.data = NULL;
2846 wmt_params.status = NULL;
2847
2848 /* Activate funciton the firmware providing to */
2849 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2850 if (err < 0) {
2851 bt_dev_err(hdev, "Failed to send wmt rst (%d)", err);
2852 return err;
2853 }
2854
2855 /* Wait a few moments for firmware activation done */
2856 usleep_range(10000, 12000);
2857
2858err_release_fw:
2859 release_firmware(fw);
2860
2861 return err;
2862}
2863
2864static int btusb_mtk_func_query(struct hci_dev *hdev)
2865{
2866 struct btmtk_hci_wmt_params wmt_params;
2867 int status, err;
2868 u8 param = 0;
2869
2870 /* Query whether the function is enabled */
2871 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2872 wmt_params.flag = 4;
2873 wmt_params.dlen = sizeof(param);
2874 wmt_params.data = ¶m;
2875 wmt_params.status = &status;
2876
2877 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2878 if (err < 0) {
2879 bt_dev_err(hdev, "Failed to query function status (%d)", err);
2880 return err;
2881 }
2882
2883 return status;
2884}
2885
2886static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2887{
2888 int pipe, err, size = sizeof(u32);
2889 void *buf;
2890
2891 buf = kzalloc(size, GFP_KERNEL);
2892 if (!buf)
2893 return -ENOMEM;
2894
2895 pipe = usb_rcvctrlpipe(data->udev, 0);
2896 err = usb_control_msg(data->udev, pipe, 0x63,
2897 USB_TYPE_VENDOR | USB_DIR_IN,
2898 reg >> 16, reg & 0xffff,
2899 buf, size, USB_CTRL_SET_TIMEOUT);
2900 if (err < 0)
2901 goto err_free_buf;
2902
2903 *val = get_unaligned_le32(buf);
2904
2905err_free_buf:
2906 kfree(buf);
2907
2908 return err;
2909}
2910
2911static int btusb_mtk_id_get(struct btusb_data *data, u32 *id)
2912{
2913 return btusb_mtk_reg_read(data, 0x80000008, id);
2914}
2915
2916static int btusb_mtk_setup(struct hci_dev *hdev)
2917{
2918 struct btusb_data *data = hci_get_drvdata(hdev);
2919 struct btmtk_hci_wmt_params wmt_params;
2920 ktime_t calltime, delta, rettime;
2921 struct btmtk_tci_sleep tci_sleep;
2922 unsigned long long duration;
2923 struct sk_buff *skb;
2924 const char *fwname;
2925 int err, status;
2926 u32 dev_id;
2927 u8 param;
2928
2929 calltime = ktime_get();
2930
2931 err = btusb_mtk_id_get(data, &dev_id);
2932 if (err < 0) {
2933 bt_dev_err(hdev, "Failed to get device id (%d)", err);
2934 return err;
2935 }
2936
2937 switch (dev_id) {
2938 case 0x7663:
2939 fwname = FIRMWARE_MT7663;
2940 break;
2941 case 0x7668:
2942 fwname = FIRMWARE_MT7668;
2943 break;
2944 default:
2945 bt_dev_err(hdev, "Unsupported support hardware variant (%08x)",
2946 dev_id);
2947 return -ENODEV;
2948 }
2949
2950 /* Query whether the firmware is already download */
2951 wmt_params.op = BTMTK_WMT_SEMAPHORE;
2952 wmt_params.flag = 1;
2953 wmt_params.dlen = 0;
2954 wmt_params.data = NULL;
2955 wmt_params.status = &status;
2956
2957 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2958 if (err < 0) {
2959 bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
2960 return err;
2961 }
2962
2963 if (status == BTMTK_WMT_PATCH_DONE) {
2964 bt_dev_info(hdev, "firmware already downloaded");
2965 goto ignore_setup_fw;
2966 }
2967
2968 /* Setup a firmware which the device definitely requires */
2969 err = btusb_mtk_setup_firmware(hdev, fwname);
2970 if (err < 0)
2971 return err;
2972
2973ignore_setup_fw:
2974 err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
2975 status < 0 || status != BTMTK_WMT_ON_PROGRESS,
2976 2000, 5000000);
2977 /* -ETIMEDOUT happens */
2978 if (err < 0)
2979 return err;
2980
2981 /* The other errors happen in btusb_mtk_func_query */
2982 if (status < 0)
2983 return status;
2984
2985 if (status == BTMTK_WMT_ON_DONE) {
2986 bt_dev_info(hdev, "function already on");
2987 goto ignore_func_on;
2988 }
2989
2990 /* Enable Bluetooth protocol */
2991 param = 1;
2992 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2993 wmt_params.flag = 0;
2994 wmt_params.dlen = sizeof(param);
2995 wmt_params.data = ¶m;
2996 wmt_params.status = NULL;
2997
2998 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2999 if (err < 0) {
3000 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3001 return err;
3002 }
3003
3004ignore_func_on:
3005 /* Apply the low power environment setup */
3006 tci_sleep.mode = 0x5;
3007 tci_sleep.duration = cpu_to_le16(0x640);
3008 tci_sleep.host_duration = cpu_to_le16(0x640);
3009 tci_sleep.host_wakeup_pin = 0;
3010 tci_sleep.time_compensation = 0;
3011
3012 skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
3013 HCI_INIT_TIMEOUT);
3014 if (IS_ERR(skb)) {
3015 err = PTR_ERR(skb);
3016 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
3017 return err;
3018 }
3019 kfree_skb(skb);
3020
3021 rettime = ktime_get();
3022 delta = ktime_sub(rettime, calltime);
3023 duration = (unsigned long long)ktime_to_ns(delta) >> 10;
3024
3025 bt_dev_info(hdev, "Device setup in %llu usecs", duration);
3026
3027 return 0;
3028}
3029
3030static int btusb_mtk_shutdown(struct hci_dev *hdev)
3031{
3032 struct btmtk_hci_wmt_params wmt_params;
3033 u8 param = 0;
3034 int err;
3035
3036 /* Disable the device */
3037 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3038 wmt_params.flag = 0;
3039 wmt_params.dlen = sizeof(param);
3040 wmt_params.data = ¶m;
3041 wmt_params.status = NULL;
3042
3043 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3044 if (err < 0) {
3045 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3046 return err;
3047 }
3048
3049 return 0;
3050}
3051
3052MODULE_FIRMWARE(FIRMWARE_MT7663);
3053MODULE_FIRMWARE(FIRMWARE_MT7668);
3054#endif
3055
3056#ifdef CONFIG_PM
3057/* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
3058static int marvell_config_oob_wake(struct hci_dev *hdev)
3059{
3060 struct sk_buff *skb;
3061 struct btusb_data *data = hci_get_drvdata(hdev);
3062 struct device *dev = &data->udev->dev;
3063 u16 pin, gap, opcode;
3064 int ret;
3065 u8 cmd[5];
3066
3067 /* Move on if no wakeup pin specified */
3068 if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
3069 of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
3070 return 0;
3071
3072 /* Vendor specific command to configure a GPIO as wake-up pin */
3073 opcode = hci_opcode_pack(0x3F, 0x59);
3074 cmd[0] = opcode & 0xFF;
3075 cmd[1] = opcode >> 8;
3076 cmd[2] = 2; /* length of parameters that follow */
3077 cmd[3] = pin;
3078 cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
3079
3080 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
3081 if (!skb) {
3082 bt_dev_err(hdev, "%s: No memory\n", __func__);
3083 return -ENOMEM;
3084 }
3085
3086 skb_put_data(skb, cmd, sizeof(cmd));
3087 hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
3088
3089 ret = btusb_send_frame(hdev, skb);
3090 if (ret) {
3091 bt_dev_err(hdev, "%s: configuration failed\n", __func__);
3092 kfree_skb(skb);
3093 return ret;
3094 }
3095
3096 return 0;
3097}
3098#endif
3099
3100static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
3101 const bdaddr_t *bdaddr)
3102{
3103 struct sk_buff *skb;
3104 u8 buf[8];
3105 long ret;
3106
3107 buf[0] = 0xfe;
3108 buf[1] = sizeof(bdaddr_t);
3109 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
3110
3111 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3112 if (IS_ERR(skb)) {
3113 ret = PTR_ERR(skb);
3114 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
3115 ret);
3116 return ret;
3117 }
3118 kfree_skb(skb);
3119
3120 return 0;
3121}
3122
3123static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3124 const bdaddr_t *bdaddr)
3125{
3126 struct sk_buff *skb;
3127 u8 buf[10];
3128 long ret;
3129
3130 buf[0] = 0x01;
3131 buf[1] = 0x01;
3132 buf[2] = 0x00;
3133 buf[3] = sizeof(bdaddr_t);
3134 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3135
3136 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3137 if (IS_ERR(skb)) {
3138 ret = PTR_ERR(skb);
3139 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3140 return ret;
3141 }
3142 kfree_skb(skb);
3143
3144 return 0;
3145}
3146
3147#define QCA_DFU_PACKET_LEN 4096
3148
3149#define QCA_GET_TARGET_VERSION 0x09
3150#define QCA_CHECK_STATUS 0x05
3151#define QCA_DFU_DOWNLOAD 0x01
3152
3153#define QCA_SYSCFG_UPDATED 0x40
3154#define QCA_PATCH_UPDATED 0x80
3155#define QCA_DFU_TIMEOUT 3000
3156
3157struct qca_version {
3158 __le32 rom_version;
3159 __le32 patch_version;
3160 __le32 ram_version;
3161 __le32 ref_clock;
3162 __u8 reserved[4];
3163} __packed;
3164
3165struct qca_rampatch_version {
3166 __le16 rom_version;
3167 __le16 patch_version;
3168} __packed;
3169
3170struct qca_device_info {
3171 u32 rom_version;
3172 u8 rampatch_hdr; /* length of header in rampatch */
3173 u8 nvm_hdr; /* length of header in NVM */
3174 u8 ver_offset; /* offset of version structure in rampatch */
3175};
3176
3177static const struct qca_device_info qca_devices_table[] = {
3178 { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
3179 { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
3180 { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
3181 { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
3182 { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
3183 { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
3184};
3185
3186static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
3187 void *data, u16 size)
3188{
3189 int pipe, err;
3190 u8 *buf;
3191
3192 buf = kmalloc(size, GFP_KERNEL);
3193 if (!buf)
3194 return -ENOMEM;
3195
3196 /* Found some of USB hosts have IOT issues with ours so that we should
3197 * not wait until HCI layer is ready.
3198 */
3199 pipe = usb_rcvctrlpipe(udev, 0);
3200 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
3201 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3202 if (err < 0) {
3203 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
3204 goto done;
3205 }
3206
3207 memcpy(data, buf, size);
3208
3209done:
3210 kfree(buf);
3211
3212 return err;
3213}
3214
3215static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
3216 const struct firmware *firmware,
3217 size_t hdr_size)
3218{
3219 struct btusb_data *btdata = hci_get_drvdata(hdev);
3220 struct usb_device *udev = btdata->udev;
3221 size_t count, size, sent = 0;
3222 int pipe, len, err;
3223 u8 *buf;
3224
3225 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
3226 if (!buf)
3227 return -ENOMEM;
3228
3229 count = firmware->size;
3230
3231 size = min_t(size_t, count, hdr_size);
3232 memcpy(buf, firmware->data, size);
3233
3234 /* USB patches should go down to controller through USB path
3235 * because binary format fits to go down through USB channel.
3236 * USB control path is for patching headers and USB bulk is for
3237 * patch body.
3238 */
3239 pipe = usb_sndctrlpipe(udev, 0);
3240 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
3241 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3242 if (err < 0) {
3243 bt_dev_err(hdev, "Failed to send headers (%d)", err);
3244 goto done;
3245 }
3246
3247 sent += size;
3248 count -= size;
3249
3250 while (count) {
3251 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
3252
3253 memcpy(buf, firmware->data + sent, size);
3254
3255 pipe = usb_sndbulkpipe(udev, 0x02);
3256 err = usb_bulk_msg(udev, pipe, buf, size, &len,
3257 QCA_DFU_TIMEOUT);
3258 if (err < 0) {
3259 bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
3260 sent, firmware->size, err);
3261 break;
3262 }
3263
3264 if (size != len) {
3265 bt_dev_err(hdev, "Failed to get bulk buffer");
3266 err = -EILSEQ;
3267 break;
3268 }
3269
3270 sent += size;
3271 count -= size;
3272 }
3273
3274done:
3275 kfree(buf);
3276 return err;
3277}
3278
3279static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
3280 struct qca_version *ver,
3281 const struct qca_device_info *info)
3282{
3283 struct qca_rampatch_version *rver;
3284 const struct firmware *fw;
3285 u32 ver_rom, ver_patch;
3286 u16 rver_rom, rver_patch;
3287 char fwname[64];
3288 int err;
3289
3290 ver_rom = le32_to_cpu(ver->rom_version);
3291 ver_patch = le32_to_cpu(ver->patch_version);
3292
3293 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
3294
3295 err = request_firmware(&fw, fwname, &hdev->dev);
3296 if (err) {
3297 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
3298 fwname, err);
3299 return err;
3300 }
3301
3302 bt_dev_info(hdev, "using rampatch file: %s", fwname);
3303
3304 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
3305 rver_rom = le16_to_cpu(rver->rom_version);
3306 rver_patch = le16_to_cpu(rver->patch_version);
3307
3308 bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
3309 "firmware rome 0x%x build 0x%x",
3310 rver_rom, rver_patch, ver_rom, ver_patch);
3311
3312 if (rver_rom != ver_rom || rver_patch <= ver_patch) {
3313 bt_dev_err(hdev, "rampatch file version did not match with firmware");
3314 err = -EINVAL;
3315 goto done;
3316 }
3317
3318 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
3319
3320done:
3321 release_firmware(fw);
3322
3323 return err;
3324}
3325
3326static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
3327 struct qca_version *ver,
3328 const struct qca_device_info *info)
3329{
3330 const struct firmware *fw;
3331 char fwname[64];
3332 int err;
3333
3334 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
3335 le32_to_cpu(ver->rom_version));
3336
3337 err = request_firmware(&fw, fwname, &hdev->dev);
3338 if (err) {
3339 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
3340 fwname, err);
3341 return err;
3342 }
3343
3344 bt_dev_info(hdev, "using NVM file: %s", fwname);
3345
3346 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
3347
3348 release_firmware(fw);
3349
3350 return err;
3351}
3352
3353/* identify the ROM version and check whether patches are needed */
3354static bool btusb_qca_need_patch(struct usb_device *udev)
3355{
3356 struct qca_version ver;
3357
3358 if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3359 sizeof(ver)) < 0)
3360 return false;
3361 /* only low ROM versions need patches */
3362 return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
3363}
3364
3365static int btusb_setup_qca(struct hci_dev *hdev)
3366{
3367 struct btusb_data *btdata = hci_get_drvdata(hdev);
3368 struct usb_device *udev = btdata->udev;
3369 const struct qca_device_info *info = NULL;
3370 struct qca_version ver;
3371 u32 ver_rom;
3372 u8 status;
3373 int i, err;
3374
3375 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3376 sizeof(ver));
3377 if (err < 0)
3378 return err;
3379
3380 ver_rom = le32_to_cpu(ver.rom_version);
3381 /* Don't care about high ROM versions */
3382 if (ver_rom & ~0xffffU)
3383 return 0;
3384
3385 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
3386 if (ver_rom == qca_devices_table[i].rom_version)
3387 info = &qca_devices_table[i];
3388 }
3389 if (!info) {
3390 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
3391 return -ENODEV;
3392 }
3393
3394 err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
3395 sizeof(status));
3396 if (err < 0)
3397 return err;
3398
3399 if (!(status & QCA_PATCH_UPDATED)) {
3400 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3401 if (err < 0)
3402 return err;
3403 }
3404
3405 if (!(status & QCA_SYSCFG_UPDATED)) {
3406 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3407 if (err < 0)
3408 return err;
3409 }
3410
3411 return 0;
3412}
3413
3414#ifdef CONFIG_BT_HCIBTUSB_BCM
3415static inline int __set_diag_interface(struct hci_dev *hdev)
3416{
3417 struct btusb_data *data = hci_get_drvdata(hdev);
3418 struct usb_interface *intf = data->diag;
3419 int i;
3420
3421 if (!data->diag)
3422 return -ENODEV;
3423
3424 data->diag_tx_ep = NULL;
3425 data->diag_rx_ep = NULL;
3426
3427 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3428 struct usb_endpoint_descriptor *ep_desc;
3429
3430 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3431
3432 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3433 data->diag_tx_ep = ep_desc;
3434 continue;
3435 }
3436
3437 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3438 data->diag_rx_ep = ep_desc;
3439 continue;
3440 }
3441 }
3442
3443 if (!data->diag_tx_ep || !data->diag_rx_ep) {
3444 bt_dev_err(hdev, "invalid diagnostic descriptors");
3445 return -ENODEV;
3446 }
3447
3448 return 0;
3449}
3450
3451static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
3452{
3453 struct btusb_data *data = hci_get_drvdata(hdev);
3454 struct sk_buff *skb;
3455 struct urb *urb;
3456 unsigned int pipe;
3457
3458 if (!data->diag_tx_ep)
3459 return ERR_PTR(-ENODEV);
3460
3461 urb = usb_alloc_urb(0, GFP_KERNEL);
3462 if (!urb)
3463 return ERR_PTR(-ENOMEM);
3464
3465 skb = bt_skb_alloc(2, GFP_KERNEL);
3466 if (!skb) {
3467 usb_free_urb(urb);
3468 return ERR_PTR(-ENOMEM);
3469 }
3470
3471 skb_put_u8(skb, 0xf0);
3472 skb_put_u8(skb, enable);
3473
3474 pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
3475
3476 usb_fill_bulk_urb(urb, data->udev, pipe,
3477 skb->data, skb->len, btusb_tx_complete, skb);
3478
3479 skb->dev = (void *)hdev;
3480
3481 return urb;
3482}
3483
3484static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
3485{
3486 struct btusb_data *data = hci_get_drvdata(hdev);
3487 struct urb *urb;
3488
3489 if (!data->diag)
3490 return -ENODEV;
3491
3492 if (!test_bit(HCI_RUNNING, &hdev->flags))
3493 return -ENETDOWN;
3494
3495 urb = alloc_diag_urb(hdev, enable);
3496 if (IS_ERR(urb))
3497 return PTR_ERR(urb);
3498
3499 return submit_or_queue_tx_urb(hdev, urb);
3500}
3501#endif
3502
3503#ifdef CONFIG_PM
3504static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
3505{
3506 struct btusb_data *data = priv;
3507
3508 pm_wakeup_event(&data->udev->dev, 0);
3509 pm_system_wakeup();
3510
3511 /* Disable only if not already disabled (keep it balanced) */
3512 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3513 disable_irq_nosync(irq);
3514 disable_irq_wake(irq);
3515 }
3516 return IRQ_HANDLED;
3517}
3518
3519static const struct of_device_id btusb_match_table[] = {
3520 { .compatible = "usb1286,204e" },
3521 { .compatible = "usbcf3,e300" }, /* QCA6174A */
3522 { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
3523 { }
3524};
3525MODULE_DEVICE_TABLE(of, btusb_match_table);
3526
3527/* Use an oob wakeup pin? */
3528static int btusb_config_oob_wake(struct hci_dev *hdev)
3529{
3530 struct btusb_data *data = hci_get_drvdata(hdev);
3531 struct device *dev = &data->udev->dev;
3532 int irq, ret;
3533
3534 clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3535
3536 if (!of_match_device(btusb_match_table, dev))
3537 return 0;
3538
3539 /* Move on if no IRQ specified */
3540 irq = of_irq_get_byname(dev->of_node, "wakeup");
3541 if (irq <= 0) {
3542 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
3543 return 0;
3544 }
3545
3546 irq_set_status_flags(irq, IRQ_NOAUTOEN);
3547 ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
3548 0, "OOB Wake-on-BT", data);
3549 if (ret) {
3550 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
3551 return ret;
3552 }
3553
3554 ret = device_init_wakeup(dev, true);
3555 if (ret) {
3556 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
3557 return ret;
3558 }
3559
3560 data->oob_wake_irq = irq;
3561 bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
3562 return 0;
3563}
3564#endif
3565
3566static void btusb_check_needs_reset_resume(struct usb_interface *intf)
3567{
3568 if (dmi_check_system(btusb_needs_reset_resume_table))
3569 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3570}
3571
3572static int btusb_probe(struct usb_interface *intf,
3573 const struct usb_device_id *id)
3574{
3575 struct usb_endpoint_descriptor *ep_desc;
3576 struct gpio_desc *reset_gpio;
3577 struct btusb_data *data;
3578 struct hci_dev *hdev;
3579 unsigned ifnum_base;
3580 int i, err;
3581
3582 BT_DBG("intf %p id %p", intf, id);
3583
3584 /* interface numbers are hardcoded in the spec */
3585 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
3586 if (!(id->driver_info & BTUSB_IFNUM_2))
3587 return -ENODEV;
3588 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
3589 return -ENODEV;
3590 }
3591
3592 ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
3593
3594 if (!id->driver_info) {
3595 const struct usb_device_id *match;
3596
3597 match = usb_match_id(intf, blacklist_table);
3598 if (match)
3599 id = match;
3600 }
3601
3602 if (id->driver_info == BTUSB_IGNORE)
3603 return -ENODEV;
3604
3605 if (id->driver_info & BTUSB_ATH3012) {
3606 struct usb_device *udev = interface_to_usbdev(intf);
3607
3608 /* Old firmware would otherwise let ath3k driver load
3609 * patch and sysconfig files
3610 */
3611 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
3612 !btusb_qca_need_patch(udev))
3613 return -ENODEV;
3614 }
3615
3616 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
3617 if (!data)
3618 return -ENOMEM;
3619
3620 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3621 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3622
3623 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
3624 data->intr_ep = ep_desc;
3625 continue;
3626 }
3627
3628 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3629 data->bulk_tx_ep = ep_desc;
3630 continue;
3631 }
3632
3633 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3634 data->bulk_rx_ep = ep_desc;
3635 continue;
3636 }
3637 }
3638
3639 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
3640 return -ENODEV;
3641
3642 if (id->driver_info & BTUSB_AMP) {
3643 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
3644 data->cmdreq = 0x2b;
3645 } else {
3646 data->cmdreq_type = USB_TYPE_CLASS;
3647 data->cmdreq = 0x00;
3648 }
3649
3650 data->udev = interface_to_usbdev(intf);
3651 data->intf = intf;
3652
3653 INIT_WORK(&data->work, btusb_work);
3654 INIT_WORK(&data->waker, btusb_waker);
3655 init_usb_anchor(&data->deferred);
3656 init_usb_anchor(&data->tx_anchor);
3657 spin_lock_init(&data->txlock);
3658
3659 init_usb_anchor(&data->intr_anchor);
3660 init_usb_anchor(&data->bulk_anchor);
3661 init_usb_anchor(&data->isoc_anchor);
3662 init_usb_anchor(&data->diag_anchor);
3663 init_usb_anchor(&data->ctrl_anchor);
3664 spin_lock_init(&data->rxlock);
3665
3666 if (id->driver_info & BTUSB_INTEL_NEW) {
3667 data->recv_event = btusb_recv_event_intel;
3668 data->recv_bulk = btusb_recv_bulk_intel;
3669 set_bit(BTUSB_BOOTLOADER, &data->flags);
3670 } else {
3671 data->recv_event = hci_recv_frame;
3672 data->recv_bulk = btusb_recv_bulk;
3673 }
3674
3675 hdev = hci_alloc_dev();
3676 if (!hdev)
3677 return -ENOMEM;
3678
3679 hdev->bus = HCI_USB;
3680 hci_set_drvdata(hdev, data);
3681
3682 if (id->driver_info & BTUSB_AMP)
3683 hdev->dev_type = HCI_AMP;
3684 else
3685 hdev->dev_type = HCI_PRIMARY;
3686
3687 data->hdev = hdev;
3688
3689 SET_HCIDEV_DEV(hdev, &intf->dev);
3690
3691 reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
3692 GPIOD_OUT_LOW);
3693 if (IS_ERR(reset_gpio)) {
3694 err = PTR_ERR(reset_gpio);
3695 goto out_free_dev;
3696 } else if (reset_gpio) {
3697 data->reset_gpio = reset_gpio;
3698 }
3699
3700 hdev->open = btusb_open;
3701 hdev->close = btusb_close;
3702 hdev->flush = btusb_flush;
3703 hdev->send = btusb_send_frame;
3704 hdev->notify = btusb_notify;
3705
3706#ifdef CONFIG_PM
3707 err = btusb_config_oob_wake(hdev);
3708 if (err)
3709 goto out_free_dev;
3710
3711 /* Marvell devices may need a specific chip configuration */
3712 if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
3713 err = marvell_config_oob_wake(hdev);
3714 if (err)
3715 goto out_free_dev;
3716 }
3717#endif
3718 if (id->driver_info & BTUSB_CW6622)
3719 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3720
3721 if (id->driver_info & BTUSB_BCM2045)
3722 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3723
3724 if (id->driver_info & BTUSB_BCM92035)
3725 hdev->setup = btusb_setup_bcm92035;
3726
3727#ifdef CONFIG_BT_HCIBTUSB_BCM
3728 if (id->driver_info & BTUSB_BCM_PATCHRAM) {
3729 hdev->manufacturer = 15;
3730 hdev->setup = btbcm_setup_patchram;
3731 hdev->set_diag = btusb_bcm_set_diag;
3732 hdev->set_bdaddr = btbcm_set_bdaddr;
3733
3734 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3735 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3736 }
3737
3738 if (id->driver_info & BTUSB_BCM_APPLE) {
3739 hdev->manufacturer = 15;
3740 hdev->setup = btbcm_setup_apple;
3741 hdev->set_diag = btusb_bcm_set_diag;
3742
3743 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3744 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3745 }
3746#endif
3747
3748 if (id->driver_info & BTUSB_INTEL) {
3749 hdev->manufacturer = 2;
3750 hdev->setup = btusb_setup_intel;
3751 hdev->shutdown = btusb_shutdown_intel;
3752 hdev->set_diag = btintel_set_diag_mfg;
3753 hdev->set_bdaddr = btintel_set_bdaddr;
3754 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3755 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3756 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3757 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3758 }
3759
3760 if (id->driver_info & BTUSB_INTEL_NEW) {
3761 hdev->manufacturer = 2;
3762 hdev->send = btusb_send_frame_intel;
3763 hdev->setup = btusb_setup_intel_new;
3764 hdev->shutdown = btusb_shutdown_intel_new;
3765 hdev->hw_error = btintel_hw_error;
3766 hdev->set_diag = btintel_set_diag;
3767 hdev->set_bdaddr = btintel_set_bdaddr;
3768 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3769 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3770 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3771 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3772 }
3773
3774 if (id->driver_info & BTUSB_MARVELL)
3775 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3776
3777#ifdef CONFIG_BT_HCIBTUSB_MTK
3778 if (id->driver_info & BTUSB_MEDIATEK) {
3779 hdev->setup = btusb_mtk_setup;
3780 hdev->shutdown = btusb_mtk_shutdown;
3781 hdev->manufacturer = 70;
3782 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
3783 }
3784#endif
3785
3786 if (id->driver_info & BTUSB_SWAVE) {
3787 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3788 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3789 }
3790
3791 if (id->driver_info & BTUSB_INTEL_BOOT) {
3792 hdev->manufacturer = 2;
3793 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3794 }
3795
3796 if (id->driver_info & BTUSB_ATH3012) {
3797 data->setup_on_usb = btusb_setup_qca;
3798 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3799 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3800 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3801 }
3802
3803 if (id->driver_info & BTUSB_QCA_ROME) {
3804 data->setup_on_usb = btusb_setup_qca;
3805 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3806 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3807 btusb_check_needs_reset_resume(intf);
3808 }
3809
3810#ifdef CONFIG_BT_HCIBTUSB_RTL
3811 if (id->driver_info & BTUSB_REALTEK) {
3812 hdev->setup = btrtl_setup_realtek;
3813 hdev->shutdown = btrtl_shutdown_realtek;
3814 hdev->cmd_timeout = btusb_rtl_cmd_timeout;
3815
3816 /* Realtek devices lose their updated firmware over global
3817 * suspend that means host doesn't send SET_FEATURE
3818 * (DEVICE_REMOTE_WAKEUP)
3819 */
3820 set_bit(BTUSB_WAKEUP_DISABLE, &data->flags);
3821 }
3822#endif
3823
3824 if (id->driver_info & BTUSB_AMP) {
3825 /* AMP controllers do not support SCO packets */
3826 data->isoc = NULL;
3827 } else {
3828 /* Interface orders are hardcoded in the specification */
3829 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
3830 data->isoc_ifnum = ifnum_base + 1;
3831 }
3832
3833 if (!reset)
3834 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3835
3836 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3837 if (!disable_scofix)
3838 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3839 }
3840
3841 if (id->driver_info & BTUSB_BROKEN_ISOC)
3842 data->isoc = NULL;
3843
3844 if (id->driver_info & BTUSB_DIGIANSWER) {
3845 data->cmdreq_type = USB_TYPE_VENDOR;
3846 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3847 }
3848
3849 if (id->driver_info & BTUSB_CSR) {
3850 struct usb_device *udev = data->udev;
3851 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3852
3853 /* Old firmware would otherwise execute USB reset */
3854 if (bcdDevice < 0x117)
3855 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3856
3857 /* Fake CSR devices with broken commands */
3858 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3859 hdev->setup = btusb_setup_csr;
3860
3861 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3862 }
3863
3864 if (id->driver_info & BTUSB_SNIFFER) {
3865 struct usb_device *udev = data->udev;
3866
3867 /* New sniffer firmware has crippled HCI interface */
3868 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3869 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3870 }
3871
3872 if (id->driver_info & BTUSB_INTEL_BOOT) {
3873 /* A bug in the bootloader causes that interrupt interface is
3874 * only enabled after receiving SetInterface(0, AltSetting=0).
3875 */
3876 err = usb_set_interface(data->udev, 0, 0);
3877 if (err < 0) {
3878 BT_ERR("failed to set interface 0, alt 0 %d", err);
3879 goto out_free_dev;
3880 }
3881 }
3882
3883 if (data->isoc) {
3884 err = usb_driver_claim_interface(&btusb_driver,
3885 data->isoc, data);
3886 if (err < 0)
3887 goto out_free_dev;
3888 }
3889
3890#ifdef CONFIG_BT_HCIBTUSB_BCM
3891 if (data->diag) {
3892 if (!usb_driver_claim_interface(&btusb_driver,
3893 data->diag, data))
3894 __set_diag_interface(hdev);
3895 else
3896 data->diag = NULL;
3897 }
3898#endif
3899
3900 if (enable_autosuspend)
3901 usb_enable_autosuspend(data->udev);
3902
3903 err = hci_register_dev(hdev);
3904 if (err < 0)
3905 goto out_free_dev;
3906
3907 usb_set_intfdata(intf, data);
3908
3909 return 0;
3910
3911out_free_dev:
3912 if (data->reset_gpio)
3913 gpiod_put(data->reset_gpio);
3914 hci_free_dev(hdev);
3915 return err;
3916}
3917
3918static void btusb_disconnect(struct usb_interface *intf)
3919{
3920 struct btusb_data *data = usb_get_intfdata(intf);
3921 struct hci_dev *hdev;
3922
3923 BT_DBG("intf %p", intf);
3924
3925 if (!data)
3926 return;
3927
3928 hdev = data->hdev;
3929 usb_set_intfdata(data->intf, NULL);
3930
3931 if (data->isoc)
3932 usb_set_intfdata(data->isoc, NULL);
3933
3934 if (data->diag)
3935 usb_set_intfdata(data->diag, NULL);
3936
3937 hci_unregister_dev(hdev);
3938
3939 if (intf == data->intf) {
3940 if (data->isoc)
3941 usb_driver_release_interface(&btusb_driver, data->isoc);
3942 if (data->diag)
3943 usb_driver_release_interface(&btusb_driver, data->diag);
3944 } else if (intf == data->isoc) {
3945 if (data->diag)
3946 usb_driver_release_interface(&btusb_driver, data->diag);
3947 usb_driver_release_interface(&btusb_driver, data->intf);
3948 } else if (intf == data->diag) {
3949 usb_driver_release_interface(&btusb_driver, data->intf);
3950 if (data->isoc)
3951 usb_driver_release_interface(&btusb_driver, data->isoc);
3952 }
3953
3954 if (data->oob_wake_irq)
3955 device_init_wakeup(&data->udev->dev, false);
3956
3957 if (data->reset_gpio)
3958 gpiod_put(data->reset_gpio);
3959
3960 hci_free_dev(hdev);
3961}
3962
3963#ifdef CONFIG_PM
3964static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3965{
3966 struct btusb_data *data = usb_get_intfdata(intf);
3967
3968 BT_DBG("intf %p", intf);
3969
3970 if (data->suspend_count++)
3971 return 0;
3972
3973 spin_lock_irq(&data->txlock);
3974 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3975 set_bit(BTUSB_SUSPENDING, &data->flags);
3976 spin_unlock_irq(&data->txlock);
3977 } else {
3978 spin_unlock_irq(&data->txlock);
3979 data->suspend_count--;
3980 return -EBUSY;
3981 }
3982
3983 cancel_work_sync(&data->work);
3984
3985 btusb_stop_traffic(data);
3986 usb_kill_anchored_urbs(&data->tx_anchor);
3987
3988 if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
3989 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3990 enable_irq_wake(data->oob_wake_irq);
3991 enable_irq(data->oob_wake_irq);
3992 }
3993
3994 /* For global suspend, Realtek devices lose the loaded fw
3995 * in them. But for autosuspend, firmware should remain.
3996 * Actually, it depends on whether the usb host sends
3997 * set feature (enable wakeup) or not.
3998 */
3999 if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags)) {
4000 if (PMSG_IS_AUTO(message) &&
4001 device_can_wakeup(&data->udev->dev))
4002 data->udev->do_remote_wakeup = 1;
4003 else if (!PMSG_IS_AUTO(message))
4004 data->udev->reset_resume = 1;
4005 }
4006
4007 return 0;
4008}
4009
4010static void play_deferred(struct btusb_data *data)
4011{
4012 struct urb *urb;
4013 int err;
4014
4015 while ((urb = usb_get_from_anchor(&data->deferred))) {
4016 usb_anchor_urb(urb, &data->tx_anchor);
4017
4018 err = usb_submit_urb(urb, GFP_ATOMIC);
4019 if (err < 0) {
4020 if (err != -EPERM && err != -ENODEV)
4021 BT_ERR("%s urb %p submission failed (%d)",
4022 data->hdev->name, urb, -err);
4023 kfree(urb->setup_packet);
4024 usb_unanchor_urb(urb);
4025 usb_free_urb(urb);
4026 break;
4027 }
4028
4029 data->tx_in_flight++;
4030 usb_free_urb(urb);
4031 }
4032
4033 /* Cleanup the rest deferred urbs. */
4034 while ((urb = usb_get_from_anchor(&data->deferred))) {
4035 kfree(urb->setup_packet);
4036 usb_free_urb(urb);
4037 }
4038}
4039
4040static int btusb_resume(struct usb_interface *intf)
4041{
4042 struct btusb_data *data = usb_get_intfdata(intf);
4043 struct hci_dev *hdev = data->hdev;
4044 int err = 0;
4045
4046 BT_DBG("intf %p", intf);
4047
4048 if (--data->suspend_count)
4049 return 0;
4050
4051 /* Disable only if not already disabled (keep it balanced) */
4052 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4053 disable_irq(data->oob_wake_irq);
4054 disable_irq_wake(data->oob_wake_irq);
4055 }
4056
4057 if (!test_bit(HCI_RUNNING, &hdev->flags))
4058 goto done;
4059
4060 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4061 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4062 if (err < 0) {
4063 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
4064 goto failed;
4065 }
4066 }
4067
4068 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
4069 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
4070 if (err < 0) {
4071 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
4072 goto failed;
4073 }
4074
4075 btusb_submit_bulk_urb(hdev, GFP_NOIO);
4076 }
4077
4078 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
4079 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
4080 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
4081 else
4082 btusb_submit_isoc_urb(hdev, GFP_NOIO);
4083 }
4084
4085 spin_lock_irq(&data->txlock);
4086 play_deferred(data);
4087 clear_bit(BTUSB_SUSPENDING, &data->flags);
4088 spin_unlock_irq(&data->txlock);
4089 schedule_work(&data->work);
4090
4091 return 0;
4092
4093failed:
4094 usb_scuttle_anchored_urbs(&data->deferred);
4095done:
4096 spin_lock_irq(&data->txlock);
4097 clear_bit(BTUSB_SUSPENDING, &data->flags);
4098 spin_unlock_irq(&data->txlock);
4099
4100 return err;
4101}
4102#endif
4103
4104static struct usb_driver btusb_driver = {
4105 .name = "btusb",
4106 .probe = btusb_probe,
4107 .disconnect = btusb_disconnect,
4108#ifdef CONFIG_PM
4109 .suspend = btusb_suspend,
4110 .resume = btusb_resume,
4111#endif
4112 .id_table = btusb_table,
4113 .supports_autosuspend = 1,
4114 .disable_hub_initiated_lpm = 1,
4115};
4116
4117module_usb_driver(btusb_driver);
4118
4119module_param(disable_scofix, bool, 0644);
4120MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
4121
4122module_param(force_scofix, bool, 0644);
4123MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
4124
4125module_param(enable_autosuspend, bool, 0644);
4126MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
4127
4128module_param(reset, bool, 0644);
4129MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
4130
4131MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
4132MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
4133MODULE_VERSION(VERSION);
4134MODULE_LICENSE("GPL");