1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 *
4 * Generic Bluetooth USB driver
5 *
6 * Copyright (C) 2005-2008 Marcel Holtmann <marcel@holtmann.org>
7 */
8
9 #include <linux/dmi.h>
10 #include <linux/module.h>
11 #include <linux/usb.h>
12 #include <linux/usb/quirks.h>
13 #include <linux/firmware.h>
14 #include <linux/iopoll.h>
15 #include <linux/of_device.h>
16 #include <linux/of_irq.h>
17 #include <linux/suspend.h>
18 #include <linux/gpio/consumer.h>
19 #include <asm/unaligned.h>
20
21 #include <net/bluetooth/bluetooth.h>
22 #include <net/bluetooth/hci_core.h>
23
24 #include "btintel.h"
25 #include "btbcm.h"
26 #include "btrtl.h"
27
28 #define VERSION "0.8"
29
30 static bool disable_scofix;
31 static bool force_scofix;
32 static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND);
33
34 static bool reset = true;
35
36 static struct usb_driver btusb_driver;
37
38 #define BTUSB_IGNORE 0x01
39 #define BTUSB_DIGIANSWER 0x02
40 #define BTUSB_CSR 0x04
41 #define BTUSB_SNIFFER 0x08
42 #define BTUSB_BCM92035 0x10
43 #define BTUSB_BROKEN_ISOC 0x20
44 #define BTUSB_WRONG_SCO_MTU 0x40
45 #define BTUSB_ATH3012 0x80
46 #define BTUSB_INTEL_COMBINED 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_AMP 0x4000
52 #define BTUSB_QCA_ROME 0x8000
53 #define BTUSB_BCM_APPLE 0x10000
54 #define BTUSB_REALTEK 0x20000
55 #define BTUSB_BCM2045 0x40000
56 #define BTUSB_IFNUM_2 0x80000
57 #define BTUSB_CW6622 0x100000
58 #define BTUSB_MEDIATEK 0x200000
59 #define BTUSB_WIDEBAND_SPEECH 0x400000
60 #define BTUSB_VALID_LE_STATES 0x800000
61 #define BTUSB_QCA_WCN6855 0x1000000
62 #define BTUSB_INTEL_BROKEN_SHUTDOWN_LED 0x2000000
63 #define BTUSB_INTEL_BROKEN_INITIAL_NCMD 0x4000000
64 #define BTUSB_INTEL_NO_WBS_SUPPORT 0x8000000
65
66 static const struct usb_device_id btusb_table[] = {
67 /* Generic Bluetooth USB device */
68 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
69
70 /* Generic Bluetooth AMP device */
71 { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
72
73 /* Generic Bluetooth USB interface */
74 { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
75
76 /* Apple-specific (Broadcom) devices */
77 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
78 .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
79
80 /* MediaTek MT76x0E */
81 { USB_DEVICE(0x0e8d, 0x763f) },
82
83 /* Broadcom SoftSailing reporting vendor specific */
84 { USB_DEVICE(0x0a5c, 0x21e1) },
85
86 /* Apple MacBookPro 7,1 */
87 { USB_DEVICE(0x05ac, 0x8213) },
88
89 /* Apple iMac11,1 */
90 { USB_DEVICE(0x05ac, 0x8215) },
91
92 /* Apple MacBookPro6,2 */
93 { USB_DEVICE(0x05ac, 0x8218) },
94
95 /* Apple MacBookAir3,1, MacBookAir3,2 */
96 { USB_DEVICE(0x05ac, 0x821b) },
97
98 /* Apple MacBookAir4,1 */
99 { USB_DEVICE(0x05ac, 0x821f) },
100
101 /* Apple MacBookPro8,2 */
102 { USB_DEVICE(0x05ac, 0x821a) },
103
104 /* Apple MacMini5,1 */
105 { USB_DEVICE(0x05ac, 0x8281) },
106
107 /* AVM BlueFRITZ! USB v2.0 */
108 { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
109
110 /* Bluetooth Ultraport Module from IBM */
111 { USB_DEVICE(0x04bf, 0x030a) },
112
113 /* ALPS Modules with non-standard id */
114 { USB_DEVICE(0x044e, 0x3001) },
115 { USB_DEVICE(0x044e, 0x3002) },
116
117 /* Ericsson with non-standard id */
118 { USB_DEVICE(0x0bdb, 0x1002) },
119
120 /* Canyon CN-BTU1 with HID interfaces */
121 { USB_DEVICE(0x0c10, 0x0000) },
122
123 /* Broadcom BCM20702B0 (Dynex/Insignia) */
124 { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
125
126 /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
127 { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01),
128 .driver_info = BTUSB_BCM_PATCHRAM },
129
130 /* Broadcom BCM920703 (HTC Vive) */
131 { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
132 .driver_info = BTUSB_BCM_PATCHRAM },
133
134 /* Foxconn - Hon Hai */
135 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
136 .driver_info = BTUSB_BCM_PATCHRAM },
137
138 /* Lite-On Technology - Broadcom based */
139 { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
140 .driver_info = BTUSB_BCM_PATCHRAM },
141
142 /* Broadcom devices with vendor specific id */
143 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
144 .driver_info = BTUSB_BCM_PATCHRAM },
145
146 /* ASUSTek Computer - Broadcom based */
147 { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
148 .driver_info = BTUSB_BCM_PATCHRAM },
149
150 /* Belkin F8065bf - Broadcom based */
151 { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
152 .driver_info = BTUSB_BCM_PATCHRAM },
153
154 /* IMC Networks - Broadcom based */
155 { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
156 .driver_info = BTUSB_BCM_PATCHRAM },
157
158 /* Dell Computer - Broadcom based */
159 { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
160 .driver_info = BTUSB_BCM_PATCHRAM },
161
162 /* Toshiba Corp - Broadcom based */
163 { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
164 .driver_info = BTUSB_BCM_PATCHRAM },
165
166 /* Intel Bluetooth USB Bootloader (RAM module) */
167 { USB_DEVICE(0x8087, 0x0a5a),
168 .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
169
170 { } /* Terminating entry */
171 };
172
173 MODULE_DEVICE_TABLE(usb, btusb_table);
174
175 static const struct usb_device_id blacklist_table[] = {
176 /* CSR BlueCore devices */
177 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
178
179 /* Broadcom BCM2033 without firmware */
180 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
181
182 /* Broadcom BCM2045 devices */
183 { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
184
185 /* Atheros 3011 with sflash firmware */
186 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
187 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
188 { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
189 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
190 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
191 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
192 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
193
194 /* Atheros AR9285 Malbec with sflash firmware */
195 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
196
197 /* Atheros 3012 with sflash firmware */
198 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
199 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
200 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
201 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
202 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
203 { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
204 { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
205 { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
206 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
207 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
208 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
209 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
210 { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
211 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
212 { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
213 { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
214 { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
215 { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
216 { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
217 { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
218 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
219 { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
220 { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
221 { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
222 { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
223 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
224 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
225 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
226 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
227 { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
228 { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
229 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
230 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
231 { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
232 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
233 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
234 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
235 { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
236 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
237 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
238 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
239 { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
240 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
241 { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
242 { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
243 { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
244 { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
245 { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
246 { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
247 { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
248
249 /* Atheros AR5BBU12 with sflash firmware */
250 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
251
252 /* Atheros AR5BBU12 with sflash firmware */
253 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
254 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
255
256 /* QCA ROME chipset */
257 { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME |
258 BTUSB_WIDEBAND_SPEECH },
259 { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME |
260 BTUSB_WIDEBAND_SPEECH },
261 { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME |
262 BTUSB_WIDEBAND_SPEECH },
263 { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME |
264 BTUSB_WIDEBAND_SPEECH },
265 { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME |
266 BTUSB_WIDEBAND_SPEECH },
267 { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME |
268 BTUSB_WIDEBAND_SPEECH },
269 { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME |
270 BTUSB_WIDEBAND_SPEECH },
271 { USB_DEVICE(0x0cf3, 0xe500), .driver_info = BTUSB_QCA_ROME |
272 BTUSB_WIDEBAND_SPEECH },
273 { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME |
274 BTUSB_WIDEBAND_SPEECH },
275 { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME |
276 BTUSB_WIDEBAND_SPEECH },
277 { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME |
278 BTUSB_WIDEBAND_SPEECH },
279 { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME |
280 BTUSB_WIDEBAND_SPEECH },
281 { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME |
282 BTUSB_WIDEBAND_SPEECH },
283 { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME |
284 BTUSB_WIDEBAND_SPEECH },
285 { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME |
286 BTUSB_WIDEBAND_SPEECH },
287 { USB_DEVICE(0x04ca, 0x3021), .driver_info = BTUSB_QCA_ROME |
288 BTUSB_WIDEBAND_SPEECH },
289 { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME |
290 BTUSB_WIDEBAND_SPEECH },
291 { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME |
292 BTUSB_WIDEBAND_SPEECH },
293 { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME |
294 BTUSB_WIDEBAND_SPEECH },
295
296 /* QCA WCN6855 chipset */
297 { USB_DEVICE(0x0cf3, 0xe600), .driver_info = BTUSB_QCA_WCN6855 |
298 BTUSB_WIDEBAND_SPEECH |
299 BTUSB_VALID_LE_STATES },
300 { USB_DEVICE(0x0489, 0xe0cc), .driver_info = BTUSB_QCA_WCN6855 |
301 BTUSB_WIDEBAND_SPEECH |
302 BTUSB_VALID_LE_STATES },
303 { USB_DEVICE(0x0489, 0xe0d6), .driver_info = BTUSB_QCA_WCN6855 |
304 BTUSB_WIDEBAND_SPEECH |
305 BTUSB_VALID_LE_STATES },
306 { USB_DEVICE(0x0489, 0xe0e3), .driver_info = BTUSB_QCA_WCN6855 |
307 BTUSB_WIDEBAND_SPEECH |
308 BTUSB_VALID_LE_STATES },
309 { USB_DEVICE(0x10ab, 0x9309), .driver_info = BTUSB_QCA_WCN6855 |
310 BTUSB_WIDEBAND_SPEECH |
311 BTUSB_VALID_LE_STATES },
312 { USB_DEVICE(0x10ab, 0x9409), .driver_info = BTUSB_QCA_WCN6855 |
313 BTUSB_WIDEBAND_SPEECH |
314 BTUSB_VALID_LE_STATES },
315 { USB_DEVICE(0x0489, 0xe0d0), .driver_info = BTUSB_QCA_WCN6855 |
316 BTUSB_WIDEBAND_SPEECH |
317 BTUSB_VALID_LE_STATES },
318
319 /* Broadcom BCM2035 */
320 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
321 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
322 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
323
324 /* Broadcom BCM2045 */
325 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
326 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
327
328 /* IBM/Lenovo ThinkPad with Broadcom chip */
329 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
330 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
331
332 /* HP laptop with Broadcom chip */
333 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
334
335 /* Dell laptop with Broadcom chip */
336 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
337
338 /* Dell Wireless 370 and 410 devices */
339 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
340 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
341
342 /* Belkin F8T012 and F8T013 devices */
343 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
344 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
345
346 /* Asus WL-BTD202 device */
347 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
348
349 /* Kensington Bluetooth USB adapter */
350 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
351
352 /* RTX Telecom based adapters with buggy SCO support */
353 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
354 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
355
356 /* CONWISE Technology based adapters with buggy SCO support */
357 { USB_DEVICE(0x0e5e, 0x6622),
358 .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
359
360 /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
361 { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
362
363 /* Digianswer devices */
364 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
365 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
366
367 /* CSR BlueCore Bluetooth Sniffer */
368 { USB_DEVICE(0x0a12, 0x0002),
369 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
370
371 /* Frontline ComProbe Bluetooth Sniffer */
372 { USB_DEVICE(0x16d3, 0x0002),
373 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
374
375 /* Marvell Bluetooth devices */
376 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
377 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
378 { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
379
380 /* Intel Bluetooth devices */
381 { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_COMBINED },
382 { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_COMBINED },
383 { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_COMBINED },
384 { USB_DEVICE(0x8087, 0x0032), .driver_info = BTUSB_INTEL_COMBINED },
385 { USB_DEVICE(0x8087, 0x0033), .driver_info = BTUSB_INTEL_COMBINED },
386 { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
387 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL_COMBINED |
388 BTUSB_INTEL_NO_WBS_SUPPORT |
389 BTUSB_INTEL_BROKEN_INITIAL_NCMD |
390 BTUSB_INTEL_BROKEN_SHUTDOWN_LED },
391 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL_COMBINED |
392 BTUSB_INTEL_NO_WBS_SUPPORT |
393 BTUSB_INTEL_BROKEN_SHUTDOWN_LED },
394 { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_COMBINED },
395 { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL_COMBINED |
396 BTUSB_INTEL_BROKEN_SHUTDOWN_LED },
397 { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_COMBINED },
398
399 /* Other Intel Bluetooth devices */
400 { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
401 .driver_info = BTUSB_IGNORE },
402
403 /* Realtek 8821CE Bluetooth devices */
404 { USB_DEVICE(0x13d3, 0x3529), .driver_info = BTUSB_REALTEK |
405 BTUSB_WIDEBAND_SPEECH },
406
407 /* Realtek 8822CE Bluetooth devices */
408 { USB_DEVICE(0x0bda, 0xb00c), .driver_info = BTUSB_REALTEK |
409 BTUSB_WIDEBAND_SPEECH },
410 { USB_DEVICE(0x0bda, 0xc822), .driver_info = BTUSB_REALTEK |
411 BTUSB_WIDEBAND_SPEECH },
412
413 /* Realtek 8852AE Bluetooth devices */
414 { USB_DEVICE(0x0bda, 0x2852), .driver_info = BTUSB_REALTEK |
415 BTUSB_WIDEBAND_SPEECH },
416 { USB_DEVICE(0x0bda, 0xc852), .driver_info = BTUSB_REALTEK |
417 BTUSB_WIDEBAND_SPEECH },
418 { USB_DEVICE(0x0bda, 0x385a), .driver_info = BTUSB_REALTEK |
419 BTUSB_WIDEBAND_SPEECH },
420 { USB_DEVICE(0x0bda, 0x4852), .driver_info = BTUSB_REALTEK |
421 BTUSB_WIDEBAND_SPEECH },
422 { USB_DEVICE(0x04c5, 0x165c), .driver_info = BTUSB_REALTEK |
423 BTUSB_WIDEBAND_SPEECH },
424 { USB_DEVICE(0x04ca, 0x4006), .driver_info = BTUSB_REALTEK |
425 BTUSB_WIDEBAND_SPEECH },
426
427 /* Realtek 8852CE Bluetooth devices */
428 { USB_DEVICE(0x04ca, 0x4007), .driver_info = BTUSB_REALTEK |
429 BTUSB_WIDEBAND_SPEECH },
430 { USB_DEVICE(0x04c5, 0x1675), .driver_info = BTUSB_REALTEK |
431 BTUSB_WIDEBAND_SPEECH },
432 { USB_DEVICE(0x0cb8, 0xc558), .driver_info = BTUSB_REALTEK |
433 BTUSB_WIDEBAND_SPEECH },
434 { USB_DEVICE(0x13d3, 0x3587), .driver_info = BTUSB_REALTEK |
435 BTUSB_WIDEBAND_SPEECH },
436 { USB_DEVICE(0x13d3, 0x3586), .driver_info = BTUSB_REALTEK |
437 BTUSB_WIDEBAND_SPEECH },
438
439 /* Realtek 8852BE Bluetooth devices */
440 { USB_DEVICE(0x0cb8, 0xc559), .driver_info = BTUSB_REALTEK |
441 BTUSB_WIDEBAND_SPEECH },
442 { USB_DEVICE(0x0bda, 0x887b), .driver_info = BTUSB_REALTEK |
443 BTUSB_WIDEBAND_SPEECH },
444 { USB_DEVICE(0x0bda, 0xb85b), .driver_info = BTUSB_REALTEK |
445 BTUSB_WIDEBAND_SPEECH },
446 { USB_DEVICE(0x13d3, 0x3570), .driver_info = BTUSB_REALTEK |
447 BTUSB_WIDEBAND_SPEECH },
448 { USB_DEVICE(0x13d3, 0x3571), .driver_info = BTUSB_REALTEK |
449 BTUSB_WIDEBAND_SPEECH },
450
451 /* Realtek Bluetooth devices */
452 { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
453 .driver_info = BTUSB_REALTEK },
454
455 /* MediaTek Bluetooth devices */
456 { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01),
457 .driver_info = BTUSB_MEDIATEK |
458 BTUSB_WIDEBAND_SPEECH |
459 BTUSB_VALID_LE_STATES },
460
461 /* Additional MediaTek MT7615E Bluetooth devices */
462 { USB_DEVICE(0x13d3, 0x3560), .driver_info = BTUSB_MEDIATEK},
463
464 /* Additional MediaTek MT7668 Bluetooth devices */
465 { USB_DEVICE(0x043e, 0x3109), .driver_info = BTUSB_MEDIATEK |
466 BTUSB_WIDEBAND_SPEECH |
467 BTUSB_VALID_LE_STATES },
468
469 /* Additional MediaTek MT7921 Bluetooth devices */
470 { USB_DEVICE(0x04ca, 0x3802), .driver_info = BTUSB_MEDIATEK |
471 BTUSB_WIDEBAND_SPEECH |
472 BTUSB_VALID_LE_STATES },
473 { USB_DEVICE(0x13d3, 0x3563), .driver_info = BTUSB_MEDIATEK |
474 BTUSB_WIDEBAND_SPEECH |
475 BTUSB_VALID_LE_STATES },
476 { USB_DEVICE(0x13d3, 0x3564), .driver_info = BTUSB_MEDIATEK |
477 BTUSB_WIDEBAND_SPEECH |
478 BTUSB_VALID_LE_STATES },
479 { USB_DEVICE(0x0489, 0xe0cd), .driver_info = BTUSB_MEDIATEK |
480 BTUSB_WIDEBAND_SPEECH |
481 BTUSB_VALID_LE_STATES },
482
483 /* MediaTek MT7922A Bluetooth devices */
484 { USB_DEVICE(0x0489, 0xe0d8), .driver_info = BTUSB_MEDIATEK |
485 BTUSB_WIDEBAND_SPEECH |
486 BTUSB_VALID_LE_STATES },
487 { USB_DEVICE(0x0489, 0xe0d9), .driver_info = BTUSB_MEDIATEK |
488 BTUSB_WIDEBAND_SPEECH |
489 BTUSB_VALID_LE_STATES },
490 { USB_DEVICE(0x0489, 0xe0f5), .driver_info = BTUSB_MEDIATEK |
491 BTUSB_WIDEBAND_SPEECH |
492 BTUSB_VALID_LE_STATES },
493 { USB_DEVICE(0x13d3, 0x3568), .driver_info = BTUSB_MEDIATEK |
494 BTUSB_WIDEBAND_SPEECH |
495 BTUSB_VALID_LE_STATES },
496
497 /* Additional Realtek 8723AE Bluetooth devices */
498 { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
499 { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
500
501 /* Additional Realtek 8723BE Bluetooth devices */
502 { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
503 { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
504 { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
505 { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
506 { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
507 { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
508
509 /* Additional Realtek 8723BU Bluetooth devices */
510 { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
511
512 /* Additional Realtek 8723DE Bluetooth devices */
513 { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
514 { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
515
516 /* Additional Realtek 8761B Bluetooth devices */
517 { USB_DEVICE(0x2357, 0x0604), .driver_info = BTUSB_REALTEK |
518 BTUSB_WIDEBAND_SPEECH },
519
520 /* Additional Realtek 8761BU Bluetooth devices */
521 { USB_DEVICE(0x0b05, 0x190e), .driver_info = BTUSB_REALTEK |
522 BTUSB_WIDEBAND_SPEECH },
523 { USB_DEVICE(0x2550, 0x8761), .driver_info = BTUSB_REALTEK |
524 BTUSB_WIDEBAND_SPEECH },
525
526 /* Additional Realtek 8821AE Bluetooth devices */
527 { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
528 { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
529 { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
530 { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
531 { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
532
533 /* Additional Realtek 8822BE Bluetooth devices */
534 { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
535 { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
536
537 /* Additional Realtek 8822CE Bluetooth devices */
538 { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK |
539 BTUSB_WIDEBAND_SPEECH },
540 { USB_DEVICE(0x04c5, 0x161f), .driver_info = BTUSB_REALTEK |
541 BTUSB_WIDEBAND_SPEECH },
542 { USB_DEVICE(0x0b05, 0x18ef), .driver_info = BTUSB_REALTEK |
543 BTUSB_WIDEBAND_SPEECH },
544 { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK |
545 BTUSB_WIDEBAND_SPEECH },
546 { USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK |
547 BTUSB_WIDEBAND_SPEECH },
548 { USB_DEVICE(0x13d3, 0x3553), .driver_info = BTUSB_REALTEK |
549 BTUSB_WIDEBAND_SPEECH },
550 { USB_DEVICE(0x13d3, 0x3555), .driver_info = BTUSB_REALTEK |
551 BTUSB_WIDEBAND_SPEECH },
552 { USB_DEVICE(0x2ff8, 0x3051), .driver_info = BTUSB_REALTEK |
553 BTUSB_WIDEBAND_SPEECH },
554 { USB_DEVICE(0x1358, 0xc123), .driver_info = BTUSB_REALTEK |
555 BTUSB_WIDEBAND_SPEECH },
556 { USB_DEVICE(0x0bda, 0xc123), .driver_info = BTUSB_REALTEK |
557 BTUSB_WIDEBAND_SPEECH },
558 { USB_DEVICE(0x0cb5, 0xc547), .driver_info = BTUSB_REALTEK |
559 BTUSB_WIDEBAND_SPEECH },
560
561 /* Silicon Wave based devices */
562 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
563
564 { } /* Terminating entry */
565 };
566
567 /* The Bluetooth USB module build into some devices needs to be reset on resume,
568 * this is a problem with the platform (likely shutting off all power) not with
569 * the module itself. So we use a DMI list to match known broken platforms.
570 */
571 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
572 {
573 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
574 .matches = {
575 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
576 DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
577 },
578 },
579 {
580 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
581 .matches = {
582 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
583 DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
584 },
585 },
586 {
587 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
588 .matches = {
589 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
590 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
591 },
592 },
593 {}
594 };
595
596 #define BTUSB_MAX_ISOC_FRAMES 10
597
598 #define BTUSB_INTR_RUNNING 0
599 #define BTUSB_BULK_RUNNING 1
600 #define BTUSB_ISOC_RUNNING 2
601 #define BTUSB_SUSPENDING 3
602 #define BTUSB_DID_ISO_RESUME 4
603 #define BTUSB_BOOTLOADER 5
604 #define BTUSB_DOWNLOADING 6
605 #define BTUSB_FIRMWARE_LOADED 7
606 #define BTUSB_FIRMWARE_FAILED 8
607 #define BTUSB_BOOTING 9
608 #define BTUSB_DIAG_RUNNING 10
609 #define BTUSB_OOB_WAKE_ENABLED 11
610 #define BTUSB_HW_RESET_ACTIVE 12
611 #define BTUSB_TX_WAIT_VND_EVT 13
612 #define BTUSB_WAKEUP_AUTOSUSPEND 14
613 #define BTUSB_USE_ALT3_FOR_WBS 15
614
615 struct btusb_data {
616 struct hci_dev *hdev;
617 struct usb_device *udev;
618 struct usb_interface *intf;
619 struct usb_interface *isoc;
620 struct usb_interface *diag;
621 unsigned isoc_ifnum;
622
623 unsigned long flags;
624
625 struct work_struct work;
626 struct work_struct waker;
627
628 struct usb_anchor deferred;
629 struct usb_anchor tx_anchor;
630 int tx_in_flight;
631 spinlock_t txlock;
632
633 struct usb_anchor intr_anchor;
634 struct usb_anchor bulk_anchor;
635 struct usb_anchor isoc_anchor;
636 struct usb_anchor diag_anchor;
637 struct usb_anchor ctrl_anchor;
638 spinlock_t rxlock;
639
640 struct sk_buff *evt_skb;
641 struct sk_buff *acl_skb;
642 struct sk_buff *sco_skb;
643
644 struct usb_endpoint_descriptor *intr_ep;
645 struct usb_endpoint_descriptor *bulk_tx_ep;
646 struct usb_endpoint_descriptor *bulk_rx_ep;
647 struct usb_endpoint_descriptor *isoc_tx_ep;
648 struct usb_endpoint_descriptor *isoc_rx_ep;
649 struct usb_endpoint_descriptor *diag_tx_ep;
650 struct usb_endpoint_descriptor *diag_rx_ep;
651
652 struct gpio_desc *reset_gpio;
653
654 __u8 cmdreq_type;
655 __u8 cmdreq;
656
657 unsigned int sco_num;
658 unsigned int air_mode;
659 bool usb_alt6_packet_flow;
660 int isoc_altsetting;
661 int suspend_count;
662
663 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
664 int (*recv_acl)(struct hci_dev *hdev, struct sk_buff *skb);
665 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
666
667 int (*setup_on_usb)(struct hci_dev *hdev);
668
669 int oob_wake_irq; /* irq for out-of-band wake-on-bt */
670 unsigned cmd_timeout_cnt;
671 };
672
btusb_intel_cmd_timeout(struct hci_dev * hdev)673 static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
674 {
675 struct btusb_data *data = hci_get_drvdata(hdev);
676 struct gpio_desc *reset_gpio = data->reset_gpio;
677
678 if (++data->cmd_timeout_cnt < 5)
679 return;
680
681 if (!reset_gpio) {
682 bt_dev_err(hdev, "No way to reset. Ignoring and continuing");
683 return;
684 }
685
686 /*
687 * Toggle the hard reset line if the platform provides one. The reset
688 * is going to yank the device off the USB and then replug. So doing
689 * once is enough. The cleanup is handled correctly on the way out
690 * (standard USB disconnect), and the new device is detected cleanly
691 * and bound to the driver again like it should be.
692 */
693 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
694 bt_dev_err(hdev, "last reset failed? Not resetting again");
695 return;
696 }
697
698 bt_dev_err(hdev, "Initiating HW reset via gpio");
699 gpiod_set_value_cansleep(reset_gpio, 1);
700 msleep(100);
701 gpiod_set_value_cansleep(reset_gpio, 0);
702 }
703
btusb_rtl_cmd_timeout(struct hci_dev * hdev)704 static void btusb_rtl_cmd_timeout(struct hci_dev *hdev)
705 {
706 struct btusb_data *data = hci_get_drvdata(hdev);
707 struct gpio_desc *reset_gpio = data->reset_gpio;
708
709 if (++data->cmd_timeout_cnt < 5)
710 return;
711
712 if (!reset_gpio) {
713 bt_dev_err(hdev, "No gpio to reset Realtek device, ignoring");
714 return;
715 }
716
717 /* Toggle the hard reset line. The Realtek device is going to
718 * yank itself off the USB and then replug. The cleanup is handled
719 * correctly on the way out (standard USB disconnect), and the new
720 * device is detected cleanly and bound to the driver again like
721 * it should be.
722 */
723 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
724 bt_dev_err(hdev, "last reset failed? Not resetting again");
725 return;
726 }
727
728 bt_dev_err(hdev, "Reset Realtek device via gpio");
729 gpiod_set_value_cansleep(reset_gpio, 1);
730 msleep(200);
731 gpiod_set_value_cansleep(reset_gpio, 0);
732 }
733
btusb_qca_cmd_timeout(struct hci_dev * hdev)734 static void btusb_qca_cmd_timeout(struct hci_dev *hdev)
735 {
736 struct btusb_data *data = hci_get_drvdata(hdev);
737 int err;
738
739 if (++data->cmd_timeout_cnt < 5)
740 return;
741
742 bt_dev_err(hdev, "Multiple cmd timeouts seen. Resetting usb device.");
743 /* This is not an unbalanced PM reference since the device will reset */
744 err = usb_autopm_get_interface(data->intf);
745 if (!err)
746 usb_queue_reset_device(data->intf);
747 else
748 bt_dev_err(hdev, "Failed usb_autopm_get_interface with %d", err);
749 }
750
btusb_free_frags(struct btusb_data * data)751 static inline void btusb_free_frags(struct btusb_data *data)
752 {
753 unsigned long flags;
754
755 spin_lock_irqsave(&data->rxlock, flags);
756
757 dev_kfree_skb_irq(data->evt_skb);
758 data->evt_skb = NULL;
759
760 dev_kfree_skb_irq(data->acl_skb);
761 data->acl_skb = NULL;
762
763 dev_kfree_skb_irq(data->sco_skb);
764 data->sco_skb = NULL;
765
766 spin_unlock_irqrestore(&data->rxlock, flags);
767 }
768
btusb_recv_intr(struct btusb_data * data,void * buffer,int count)769 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
770 {
771 struct sk_buff *skb;
772 unsigned long flags;
773 int err = 0;
774
775 spin_lock_irqsave(&data->rxlock, flags);
776 skb = data->evt_skb;
777
778 while (count) {
779 int len;
780
781 if (!skb) {
782 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
783 if (!skb) {
784 err = -ENOMEM;
785 break;
786 }
787
788 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
789 hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
790 }
791
792 len = min_t(uint, hci_skb_expect(skb), count);
793 skb_put_data(skb, buffer, len);
794
795 count -= len;
796 buffer += len;
797 hci_skb_expect(skb) -= len;
798
799 if (skb->len == HCI_EVENT_HDR_SIZE) {
800 /* Complete event header */
801 hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
802
803 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
804 kfree_skb(skb);
805 skb = NULL;
806
807 err = -EILSEQ;
808 break;
809 }
810 }
811
812 if (!hci_skb_expect(skb)) {
813 /* Complete frame */
814 data->recv_event(data->hdev, skb);
815 skb = NULL;
816 }
817 }
818
819 data->evt_skb = skb;
820 spin_unlock_irqrestore(&data->rxlock, flags);
821
822 return err;
823 }
824
btusb_recv_bulk(struct btusb_data * data,void * buffer,int count)825 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
826 {
827 struct sk_buff *skb;
828 unsigned long flags;
829 int err = 0;
830
831 spin_lock_irqsave(&data->rxlock, flags);
832 skb = data->acl_skb;
833
834 while (count) {
835 int len;
836
837 if (!skb) {
838 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
839 if (!skb) {
840 err = -ENOMEM;
841 break;
842 }
843
844 hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
845 hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
846 }
847
848 len = min_t(uint, hci_skb_expect(skb), count);
849 skb_put_data(skb, buffer, len);
850
851 count -= len;
852 buffer += len;
853 hci_skb_expect(skb) -= len;
854
855 if (skb->len == HCI_ACL_HDR_SIZE) {
856 __le16 dlen = hci_acl_hdr(skb)->dlen;
857
858 /* Complete ACL header */
859 hci_skb_expect(skb) = __le16_to_cpu(dlen);
860
861 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
862 kfree_skb(skb);
863 skb = NULL;
864
865 err = -EILSEQ;
866 break;
867 }
868 }
869
870 if (!hci_skb_expect(skb)) {
871 /* Complete frame */
872 data->recv_acl(data->hdev, skb);
873 skb = NULL;
874 }
875 }
876
877 data->acl_skb = skb;
878 spin_unlock_irqrestore(&data->rxlock, flags);
879
880 return err;
881 }
882
btusb_recv_isoc(struct btusb_data * data,void * buffer,int count)883 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
884 {
885 struct sk_buff *skb;
886 unsigned long flags;
887 int err = 0;
888
889 spin_lock_irqsave(&data->rxlock, flags);
890 skb = data->sco_skb;
891
892 while (count) {
893 int len;
894
895 if (!skb) {
896 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
897 if (!skb) {
898 err = -ENOMEM;
899 break;
900 }
901
902 hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
903 hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
904 }
905
906 len = min_t(uint, hci_skb_expect(skb), count);
907 skb_put_data(skb, buffer, len);
908
909 count -= len;
910 buffer += len;
911 hci_skb_expect(skb) -= len;
912
913 if (skb->len == HCI_SCO_HDR_SIZE) {
914 /* Complete SCO header */
915 hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
916
917 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
918 kfree_skb(skb);
919 skb = NULL;
920
921 err = -EILSEQ;
922 break;
923 }
924 }
925
926 if (!hci_skb_expect(skb)) {
927 /* Complete frame */
928 hci_recv_frame(data->hdev, skb);
929 skb = NULL;
930 }
931 }
932
933 data->sco_skb = skb;
934 spin_unlock_irqrestore(&data->rxlock, flags);
935
936 return err;
937 }
938
btusb_intr_complete(struct urb * urb)939 static void btusb_intr_complete(struct urb *urb)
940 {
941 struct hci_dev *hdev = urb->context;
942 struct btusb_data *data = hci_get_drvdata(hdev);
943 int err;
944
945 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
946 urb->actual_length);
947
948 if (!test_bit(HCI_RUNNING, &hdev->flags))
949 return;
950
951 if (urb->status == 0) {
952 hdev->stat.byte_rx += urb->actual_length;
953
954 if (btusb_recv_intr(data, urb->transfer_buffer,
955 urb->actual_length) < 0) {
956 bt_dev_err(hdev, "corrupted event packet");
957 hdev->stat.err_rx++;
958 }
959 } else if (urb->status == -ENOENT) {
960 /* Avoid suspend failed when usb_kill_urb */
961 return;
962 }
963
964 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
965 return;
966
967 usb_mark_last_busy(data->udev);
968 usb_anchor_urb(urb, &data->intr_anchor);
969
970 err = usb_submit_urb(urb, GFP_ATOMIC);
971 if (err < 0) {
972 /* -EPERM: urb is being killed;
973 * -ENODEV: device got disconnected
974 */
975 if (err != -EPERM && err != -ENODEV)
976 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
977 urb, -err);
978 usb_unanchor_urb(urb);
979 }
980 }
981
btusb_submit_intr_urb(struct hci_dev * hdev,gfp_t mem_flags)982 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
983 {
984 struct btusb_data *data = hci_get_drvdata(hdev);
985 struct urb *urb;
986 unsigned char *buf;
987 unsigned int pipe;
988 int err, size;
989
990 BT_DBG("%s", hdev->name);
991
992 if (!data->intr_ep)
993 return -ENODEV;
994
995 urb = usb_alloc_urb(0, mem_flags);
996 if (!urb)
997 return -ENOMEM;
998
999 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
1000
1001 buf = kmalloc(size, mem_flags);
1002 if (!buf) {
1003 usb_free_urb(urb);
1004 return -ENOMEM;
1005 }
1006
1007 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
1008
1009 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
1010 btusb_intr_complete, hdev, data->intr_ep->bInterval);
1011
1012 urb->transfer_flags |= URB_FREE_BUFFER;
1013
1014 usb_anchor_urb(urb, &data->intr_anchor);
1015
1016 err = usb_submit_urb(urb, mem_flags);
1017 if (err < 0) {
1018 if (err != -EPERM && err != -ENODEV)
1019 bt_dev_err(hdev, "urb %p submission failed (%d)",
1020 urb, -err);
1021 usb_unanchor_urb(urb);
1022 }
1023
1024 usb_free_urb(urb);
1025
1026 return err;
1027 }
1028
btusb_bulk_complete(struct urb * urb)1029 static void btusb_bulk_complete(struct urb *urb)
1030 {
1031 struct hci_dev *hdev = urb->context;
1032 struct btusb_data *data = hci_get_drvdata(hdev);
1033 int err;
1034
1035 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1036 urb->actual_length);
1037
1038 if (!test_bit(HCI_RUNNING, &hdev->flags))
1039 return;
1040
1041 if (urb->status == 0) {
1042 hdev->stat.byte_rx += urb->actual_length;
1043
1044 if (data->recv_bulk(data, urb->transfer_buffer,
1045 urb->actual_length) < 0) {
1046 bt_dev_err(hdev, "corrupted ACL packet");
1047 hdev->stat.err_rx++;
1048 }
1049 } else if (urb->status == -ENOENT) {
1050 /* Avoid suspend failed when usb_kill_urb */
1051 return;
1052 }
1053
1054 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
1055 return;
1056
1057 usb_anchor_urb(urb, &data->bulk_anchor);
1058 usb_mark_last_busy(data->udev);
1059
1060 err = usb_submit_urb(urb, GFP_ATOMIC);
1061 if (err < 0) {
1062 /* -EPERM: urb is being killed;
1063 * -ENODEV: device got disconnected
1064 */
1065 if (err != -EPERM && err != -ENODEV)
1066 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1067 urb, -err);
1068 usb_unanchor_urb(urb);
1069 }
1070 }
1071
btusb_submit_bulk_urb(struct hci_dev * hdev,gfp_t mem_flags)1072 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
1073 {
1074 struct btusb_data *data = hci_get_drvdata(hdev);
1075 struct urb *urb;
1076 unsigned char *buf;
1077 unsigned int pipe;
1078 int err, size = HCI_MAX_FRAME_SIZE;
1079
1080 BT_DBG("%s", hdev->name);
1081
1082 if (!data->bulk_rx_ep)
1083 return -ENODEV;
1084
1085 urb = usb_alloc_urb(0, mem_flags);
1086 if (!urb)
1087 return -ENOMEM;
1088
1089 buf = kmalloc(size, mem_flags);
1090 if (!buf) {
1091 usb_free_urb(urb);
1092 return -ENOMEM;
1093 }
1094
1095 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
1096
1097 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1098 btusb_bulk_complete, hdev);
1099
1100 urb->transfer_flags |= URB_FREE_BUFFER;
1101
1102 usb_mark_last_busy(data->udev);
1103 usb_anchor_urb(urb, &data->bulk_anchor);
1104
1105 err = usb_submit_urb(urb, mem_flags);
1106 if (err < 0) {
1107 if (err != -EPERM && err != -ENODEV)
1108 bt_dev_err(hdev, "urb %p submission failed (%d)",
1109 urb, -err);
1110 usb_unanchor_urb(urb);
1111 }
1112
1113 usb_free_urb(urb);
1114
1115 return err;
1116 }
1117
btusb_isoc_complete(struct urb * urb)1118 static void btusb_isoc_complete(struct urb *urb)
1119 {
1120 struct hci_dev *hdev = urb->context;
1121 struct btusb_data *data = hci_get_drvdata(hdev);
1122 int i, err;
1123
1124 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1125 urb->actual_length);
1126
1127 if (!test_bit(HCI_RUNNING, &hdev->flags))
1128 return;
1129
1130 if (urb->status == 0) {
1131 for (i = 0; i < urb->number_of_packets; i++) {
1132 unsigned int offset = urb->iso_frame_desc[i].offset;
1133 unsigned int length = urb->iso_frame_desc[i].actual_length;
1134
1135 if (urb->iso_frame_desc[i].status)
1136 continue;
1137
1138 hdev->stat.byte_rx += length;
1139
1140 if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
1141 length) < 0) {
1142 bt_dev_err(hdev, "corrupted SCO packet");
1143 hdev->stat.err_rx++;
1144 }
1145 }
1146 } else if (urb->status == -ENOENT) {
1147 /* Avoid suspend failed when usb_kill_urb */
1148 return;
1149 }
1150
1151 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
1152 return;
1153
1154 usb_anchor_urb(urb, &data->isoc_anchor);
1155
1156 err = usb_submit_urb(urb, GFP_ATOMIC);
1157 if (err < 0) {
1158 /* -EPERM: urb is being killed;
1159 * -ENODEV: device got disconnected
1160 */
1161 if (err != -EPERM && err != -ENODEV)
1162 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1163 urb, -err);
1164 usb_unanchor_urb(urb);
1165 }
1166 }
1167
__fill_isoc_descriptor_msbc(struct urb * urb,int len,int mtu,struct btusb_data * data)1168 static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len,
1169 int mtu, struct btusb_data *data)
1170 {
1171 int i, offset = 0;
1172 unsigned int interval;
1173
1174 BT_DBG("len %d mtu %d", len, mtu);
1175
1176 /* For mSBC ALT 6 setting the host will send the packet at continuous
1177 * flow. As per core spec 5, vol 4, part B, table 2.1. For ALT setting
1178 * 6 the HCI PACKET INTERVAL should be 7.5ms for every usb packets.
1179 * To maintain the rate we send 63bytes of usb packets alternatively for
1180 * 7ms and 8ms to maintain the rate as 7.5ms.
1181 */
1182 if (data->usb_alt6_packet_flow) {
1183 interval = 7;
1184 data->usb_alt6_packet_flow = false;
1185 } else {
1186 interval = 6;
1187 data->usb_alt6_packet_flow = true;
1188 }
1189
1190 for (i = 0; i < interval; i++) {
1191 urb->iso_frame_desc[i].offset = offset;
1192 urb->iso_frame_desc[i].length = offset;
1193 }
1194
1195 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1196 urb->iso_frame_desc[i].offset = offset;
1197 urb->iso_frame_desc[i].length = len;
1198 i++;
1199 }
1200
1201 urb->number_of_packets = i;
1202 }
1203
__fill_isoc_descriptor(struct urb * urb,int len,int mtu)1204 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
1205 {
1206 int i, offset = 0;
1207
1208 BT_DBG("len %d mtu %d", len, mtu);
1209
1210 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
1211 i++, offset += mtu, len -= mtu) {
1212 urb->iso_frame_desc[i].offset = offset;
1213 urb->iso_frame_desc[i].length = mtu;
1214 }
1215
1216 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1217 urb->iso_frame_desc[i].offset = offset;
1218 urb->iso_frame_desc[i].length = len;
1219 i++;
1220 }
1221
1222 urb->number_of_packets = i;
1223 }
1224
btusb_submit_isoc_urb(struct hci_dev * hdev,gfp_t mem_flags)1225 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
1226 {
1227 struct btusb_data *data = hci_get_drvdata(hdev);
1228 struct urb *urb;
1229 unsigned char *buf;
1230 unsigned int pipe;
1231 int err, size;
1232
1233 BT_DBG("%s", hdev->name);
1234
1235 if (!data->isoc_rx_ep)
1236 return -ENODEV;
1237
1238 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
1239 if (!urb)
1240 return -ENOMEM;
1241
1242 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
1243 BTUSB_MAX_ISOC_FRAMES;
1244
1245 buf = kmalloc(size, mem_flags);
1246 if (!buf) {
1247 usb_free_urb(urb);
1248 return -ENOMEM;
1249 }
1250
1251 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
1252
1253 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
1254 hdev, data->isoc_rx_ep->bInterval);
1255
1256 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
1257
1258 __fill_isoc_descriptor(urb, size,
1259 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
1260
1261 usb_anchor_urb(urb, &data->isoc_anchor);
1262
1263 err = usb_submit_urb(urb, mem_flags);
1264 if (err < 0) {
1265 if (err != -EPERM && err != -ENODEV)
1266 bt_dev_err(hdev, "urb %p submission failed (%d)",
1267 urb, -err);
1268 usb_unanchor_urb(urb);
1269 }
1270
1271 usb_free_urb(urb);
1272
1273 return err;
1274 }
1275
btusb_diag_complete(struct urb * urb)1276 static void btusb_diag_complete(struct urb *urb)
1277 {
1278 struct hci_dev *hdev = urb->context;
1279 struct btusb_data *data = hci_get_drvdata(hdev);
1280 int err;
1281
1282 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1283 urb->actual_length);
1284
1285 if (urb->status == 0) {
1286 struct sk_buff *skb;
1287
1288 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1289 if (skb) {
1290 skb_put_data(skb, urb->transfer_buffer,
1291 urb->actual_length);
1292 hci_recv_diag(hdev, skb);
1293 }
1294 } else if (urb->status == -ENOENT) {
1295 /* Avoid suspend failed when usb_kill_urb */
1296 return;
1297 }
1298
1299 if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1300 return;
1301
1302 usb_anchor_urb(urb, &data->diag_anchor);
1303 usb_mark_last_busy(data->udev);
1304
1305 err = usb_submit_urb(urb, GFP_ATOMIC);
1306 if (err < 0) {
1307 /* -EPERM: urb is being killed;
1308 * -ENODEV: device got disconnected
1309 */
1310 if (err != -EPERM && err != -ENODEV)
1311 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1312 urb, -err);
1313 usb_unanchor_urb(urb);
1314 }
1315 }
1316
btusb_submit_diag_urb(struct hci_dev * hdev,gfp_t mem_flags)1317 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1318 {
1319 struct btusb_data *data = hci_get_drvdata(hdev);
1320 struct urb *urb;
1321 unsigned char *buf;
1322 unsigned int pipe;
1323 int err, size = HCI_MAX_FRAME_SIZE;
1324
1325 BT_DBG("%s", hdev->name);
1326
1327 if (!data->diag_rx_ep)
1328 return -ENODEV;
1329
1330 urb = usb_alloc_urb(0, mem_flags);
1331 if (!urb)
1332 return -ENOMEM;
1333
1334 buf = kmalloc(size, mem_flags);
1335 if (!buf) {
1336 usb_free_urb(urb);
1337 return -ENOMEM;
1338 }
1339
1340 pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1341
1342 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1343 btusb_diag_complete, hdev);
1344
1345 urb->transfer_flags |= URB_FREE_BUFFER;
1346
1347 usb_mark_last_busy(data->udev);
1348 usb_anchor_urb(urb, &data->diag_anchor);
1349
1350 err = usb_submit_urb(urb, mem_flags);
1351 if (err < 0) {
1352 if (err != -EPERM && err != -ENODEV)
1353 bt_dev_err(hdev, "urb %p submission failed (%d)",
1354 urb, -err);
1355 usb_unanchor_urb(urb);
1356 }
1357
1358 usb_free_urb(urb);
1359
1360 return err;
1361 }
1362
btusb_tx_complete(struct urb * urb)1363 static void btusb_tx_complete(struct urb *urb)
1364 {
1365 struct sk_buff *skb = urb->context;
1366 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1367 struct btusb_data *data = hci_get_drvdata(hdev);
1368 unsigned long flags;
1369
1370 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1371 urb->actual_length);
1372
1373 if (!test_bit(HCI_RUNNING, &hdev->flags))
1374 goto done;
1375
1376 if (!urb->status)
1377 hdev->stat.byte_tx += urb->transfer_buffer_length;
1378 else
1379 hdev->stat.err_tx++;
1380
1381 done:
1382 spin_lock_irqsave(&data->txlock, flags);
1383 data->tx_in_flight--;
1384 spin_unlock_irqrestore(&data->txlock, flags);
1385
1386 kfree(urb->setup_packet);
1387
1388 kfree_skb(skb);
1389 }
1390
btusb_isoc_tx_complete(struct urb * urb)1391 static void btusb_isoc_tx_complete(struct urb *urb)
1392 {
1393 struct sk_buff *skb = urb->context;
1394 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1395
1396 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1397 urb->actual_length);
1398
1399 if (!test_bit(HCI_RUNNING, &hdev->flags))
1400 goto done;
1401
1402 if (!urb->status)
1403 hdev->stat.byte_tx += urb->transfer_buffer_length;
1404 else
1405 hdev->stat.err_tx++;
1406
1407 done:
1408 kfree(urb->setup_packet);
1409
1410 kfree_skb(skb);
1411 }
1412
btusb_open(struct hci_dev * hdev)1413 static int btusb_open(struct hci_dev *hdev)
1414 {
1415 struct btusb_data *data = hci_get_drvdata(hdev);
1416 int err;
1417
1418 BT_DBG("%s", hdev->name);
1419
1420 err = usb_autopm_get_interface(data->intf);
1421 if (err < 0)
1422 return err;
1423
1424 /* Patching USB firmware files prior to starting any URBs of HCI path
1425 * It is more safe to use USB bulk channel for downloading USB patch
1426 */
1427 if (data->setup_on_usb) {
1428 err = data->setup_on_usb(hdev);
1429 if (err < 0)
1430 goto setup_fail;
1431 }
1432
1433 data->intf->needs_remote_wakeup = 1;
1434
1435 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1436 goto done;
1437
1438 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1439 if (err < 0)
1440 goto failed;
1441
1442 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1443 if (err < 0) {
1444 usb_kill_anchored_urbs(&data->intr_anchor);
1445 goto failed;
1446 }
1447
1448 set_bit(BTUSB_BULK_RUNNING, &data->flags);
1449 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1450
1451 if (data->diag) {
1452 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1453 set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1454 }
1455
1456 done:
1457 usb_autopm_put_interface(data->intf);
1458 return 0;
1459
1460 failed:
1461 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1462 setup_fail:
1463 usb_autopm_put_interface(data->intf);
1464 return err;
1465 }
1466
btusb_stop_traffic(struct btusb_data * data)1467 static void btusb_stop_traffic(struct btusb_data *data)
1468 {
1469 usb_kill_anchored_urbs(&data->intr_anchor);
1470 usb_kill_anchored_urbs(&data->bulk_anchor);
1471 usb_kill_anchored_urbs(&data->isoc_anchor);
1472 usb_kill_anchored_urbs(&data->diag_anchor);
1473 usb_kill_anchored_urbs(&data->ctrl_anchor);
1474 }
1475
btusb_close(struct hci_dev * hdev)1476 static int btusb_close(struct hci_dev *hdev)
1477 {
1478 struct btusb_data *data = hci_get_drvdata(hdev);
1479 int err;
1480
1481 BT_DBG("%s", hdev->name);
1482
1483 cancel_work_sync(&data->work);
1484 cancel_work_sync(&data->waker);
1485
1486 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1487 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1488 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1489 clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1490
1491 btusb_stop_traffic(data);
1492 btusb_free_frags(data);
1493
1494 err = usb_autopm_get_interface(data->intf);
1495 if (err < 0)
1496 goto failed;
1497
1498 data->intf->needs_remote_wakeup = 0;
1499
1500 /* Enable remote wake up for auto-suspend */
1501 if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags))
1502 data->intf->needs_remote_wakeup = 1;
1503
1504 usb_autopm_put_interface(data->intf);
1505
1506 failed:
1507 usb_scuttle_anchored_urbs(&data->deferred);
1508 return 0;
1509 }
1510
btusb_flush(struct hci_dev * hdev)1511 static int btusb_flush(struct hci_dev *hdev)
1512 {
1513 struct btusb_data *data = hci_get_drvdata(hdev);
1514
1515 BT_DBG("%s", hdev->name);
1516
1517 usb_kill_anchored_urbs(&data->tx_anchor);
1518 btusb_free_frags(data);
1519
1520 return 0;
1521 }
1522
alloc_ctrl_urb(struct hci_dev * hdev,struct sk_buff * skb)1523 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1524 {
1525 struct btusb_data *data = hci_get_drvdata(hdev);
1526 struct usb_ctrlrequest *dr;
1527 struct urb *urb;
1528 unsigned int pipe;
1529
1530 urb = usb_alloc_urb(0, GFP_KERNEL);
1531 if (!urb)
1532 return ERR_PTR(-ENOMEM);
1533
1534 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1535 if (!dr) {
1536 usb_free_urb(urb);
1537 return ERR_PTR(-ENOMEM);
1538 }
1539
1540 dr->bRequestType = data->cmdreq_type;
1541 dr->bRequest = data->cmdreq;
1542 dr->wIndex = 0;
1543 dr->wValue = 0;
1544 dr->wLength = __cpu_to_le16(skb->len);
1545
1546 pipe = usb_sndctrlpipe(data->udev, 0x00);
1547
1548 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1549 skb->data, skb->len, btusb_tx_complete, skb);
1550
1551 skb->dev = (void *)hdev;
1552
1553 return urb;
1554 }
1555
alloc_bulk_urb(struct hci_dev * hdev,struct sk_buff * skb)1556 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1557 {
1558 struct btusb_data *data = hci_get_drvdata(hdev);
1559 struct urb *urb;
1560 unsigned int pipe;
1561
1562 if (!data->bulk_tx_ep)
1563 return ERR_PTR(-ENODEV);
1564
1565 urb = usb_alloc_urb(0, GFP_KERNEL);
1566 if (!urb)
1567 return ERR_PTR(-ENOMEM);
1568
1569 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1570
1571 usb_fill_bulk_urb(urb, data->udev, pipe,
1572 skb->data, skb->len, btusb_tx_complete, skb);
1573
1574 skb->dev = (void *)hdev;
1575
1576 return urb;
1577 }
1578
alloc_isoc_urb(struct hci_dev * hdev,struct sk_buff * skb)1579 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1580 {
1581 struct btusb_data *data = hci_get_drvdata(hdev);
1582 struct urb *urb;
1583 unsigned int pipe;
1584
1585 if (!data->isoc_tx_ep)
1586 return ERR_PTR(-ENODEV);
1587
1588 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1589 if (!urb)
1590 return ERR_PTR(-ENOMEM);
1591
1592 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1593
1594 usb_fill_int_urb(urb, data->udev, pipe,
1595 skb->data, skb->len, btusb_isoc_tx_complete,
1596 skb, data->isoc_tx_ep->bInterval);
1597
1598 urb->transfer_flags = URB_ISO_ASAP;
1599
1600 if (data->isoc_altsetting == 6)
1601 __fill_isoc_descriptor_msbc(urb, skb->len,
1602 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize),
1603 data);
1604 else
1605 __fill_isoc_descriptor(urb, skb->len,
1606 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1607 skb->dev = (void *)hdev;
1608
1609 return urb;
1610 }
1611
submit_tx_urb(struct hci_dev * hdev,struct urb * urb)1612 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1613 {
1614 struct btusb_data *data = hci_get_drvdata(hdev);
1615 int err;
1616
1617 usb_anchor_urb(urb, &data->tx_anchor);
1618
1619 err = usb_submit_urb(urb, GFP_KERNEL);
1620 if (err < 0) {
1621 if (err != -EPERM && err != -ENODEV)
1622 bt_dev_err(hdev, "urb %p submission failed (%d)",
1623 urb, -err);
1624 kfree(urb->setup_packet);
1625 usb_unanchor_urb(urb);
1626 } else {
1627 usb_mark_last_busy(data->udev);
1628 }
1629
1630 usb_free_urb(urb);
1631 return err;
1632 }
1633
submit_or_queue_tx_urb(struct hci_dev * hdev,struct urb * urb)1634 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1635 {
1636 struct btusb_data *data = hci_get_drvdata(hdev);
1637 unsigned long flags;
1638 bool suspending;
1639
1640 spin_lock_irqsave(&data->txlock, flags);
1641 suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1642 if (!suspending)
1643 data->tx_in_flight++;
1644 spin_unlock_irqrestore(&data->txlock, flags);
1645
1646 if (!suspending)
1647 return submit_tx_urb(hdev, urb);
1648
1649 usb_anchor_urb(urb, &data->deferred);
1650 schedule_work(&data->waker);
1651
1652 usb_free_urb(urb);
1653 return 0;
1654 }
1655
btusb_send_frame(struct hci_dev * hdev,struct sk_buff * skb)1656 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1657 {
1658 struct urb *urb;
1659
1660 BT_DBG("%s", hdev->name);
1661
1662 switch (hci_skb_pkt_type(skb)) {
1663 case HCI_COMMAND_PKT:
1664 urb = alloc_ctrl_urb(hdev, skb);
1665 if (IS_ERR(urb))
1666 return PTR_ERR(urb);
1667
1668 hdev->stat.cmd_tx++;
1669 return submit_or_queue_tx_urb(hdev, urb);
1670
1671 case HCI_ACLDATA_PKT:
1672 urb = alloc_bulk_urb(hdev, skb);
1673 if (IS_ERR(urb))
1674 return PTR_ERR(urb);
1675
1676 hdev->stat.acl_tx++;
1677 return submit_or_queue_tx_urb(hdev, urb);
1678
1679 case HCI_SCODATA_PKT:
1680 if (hci_conn_num(hdev, SCO_LINK) < 1)
1681 return -ENODEV;
1682
1683 urb = alloc_isoc_urb(hdev, skb);
1684 if (IS_ERR(urb))
1685 return PTR_ERR(urb);
1686
1687 hdev->stat.sco_tx++;
1688 return submit_tx_urb(hdev, urb);
1689 }
1690
1691 return -EILSEQ;
1692 }
1693
btusb_notify(struct hci_dev * hdev,unsigned int evt)1694 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1695 {
1696 struct btusb_data *data = hci_get_drvdata(hdev);
1697
1698 BT_DBG("%s evt %d", hdev->name, evt);
1699
1700 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1701 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1702 data->air_mode = evt;
1703 schedule_work(&data->work);
1704 }
1705 }
1706
__set_isoc_interface(struct hci_dev * hdev,int altsetting)1707 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1708 {
1709 struct btusb_data *data = hci_get_drvdata(hdev);
1710 struct usb_interface *intf = data->isoc;
1711 struct usb_endpoint_descriptor *ep_desc;
1712 int i, err;
1713
1714 if (!data->isoc)
1715 return -ENODEV;
1716
1717 err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1718 if (err < 0) {
1719 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1720 return err;
1721 }
1722
1723 data->isoc_altsetting = altsetting;
1724
1725 data->isoc_tx_ep = NULL;
1726 data->isoc_rx_ep = NULL;
1727
1728 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1729 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1730
1731 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1732 data->isoc_tx_ep = ep_desc;
1733 continue;
1734 }
1735
1736 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1737 data->isoc_rx_ep = ep_desc;
1738 continue;
1739 }
1740 }
1741
1742 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1743 bt_dev_err(hdev, "invalid SCO descriptors");
1744 return -ENODEV;
1745 }
1746
1747 return 0;
1748 }
1749
btusb_switch_alt_setting(struct hci_dev * hdev,int new_alts)1750 static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts)
1751 {
1752 struct btusb_data *data = hci_get_drvdata(hdev);
1753 int err;
1754
1755 if (data->isoc_altsetting != new_alts) {
1756 unsigned long flags;
1757
1758 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1759 usb_kill_anchored_urbs(&data->isoc_anchor);
1760
1761 /* When isochronous alternate setting needs to be
1762 * changed, because SCO connection has been added
1763 * or removed, a packet fragment may be left in the
1764 * reassembling state. This could lead to wrongly
1765 * assembled fragments.
1766 *
1767 * Clear outstanding fragment when selecting a new
1768 * alternate setting.
1769 */
1770 spin_lock_irqsave(&data->rxlock, flags);
1771 dev_kfree_skb_irq(data->sco_skb);
1772 data->sco_skb = NULL;
1773 spin_unlock_irqrestore(&data->rxlock, flags);
1774
1775 err = __set_isoc_interface(hdev, new_alts);
1776 if (err < 0)
1777 return err;
1778 }
1779
1780 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1781 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1782 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1783 else
1784 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1785 }
1786
1787 return 0;
1788 }
1789
btusb_find_altsetting(struct btusb_data * data,int alt)1790 static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data,
1791 int alt)
1792 {
1793 struct usb_interface *intf = data->isoc;
1794 int i;
1795
1796 BT_DBG("Looking for Alt no :%d", alt);
1797
1798 if (!intf)
1799 return NULL;
1800
1801 for (i = 0; i < intf->num_altsetting; i++) {
1802 if (intf->altsetting[i].desc.bAlternateSetting == alt)
1803 return &intf->altsetting[i];
1804 }
1805
1806 return NULL;
1807 }
1808
btusb_work(struct work_struct * work)1809 static void btusb_work(struct work_struct *work)
1810 {
1811 struct btusb_data *data = container_of(work, struct btusb_data, work);
1812 struct hci_dev *hdev = data->hdev;
1813 int new_alts = 0;
1814 int err;
1815
1816 if (data->sco_num > 0) {
1817 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1818 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1819 if (err < 0) {
1820 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1821 usb_kill_anchored_urbs(&data->isoc_anchor);
1822 return;
1823 }
1824
1825 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1826 }
1827
1828 if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_CVSD) {
1829 if (hdev->voice_setting & 0x0020) {
1830 static const int alts[3] = { 2, 4, 5 };
1831
1832 new_alts = alts[data->sco_num - 1];
1833 } else {
1834 new_alts = data->sco_num;
1835 }
1836 } else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) {
1837 /* Bluetooth USB spec recommends alt 6 (63 bytes), but
1838 * many adapters do not support it. Alt 1 appears to
1839 * work for all adapters that do not have alt 6, and
1840 * which work with WBS at all. Some devices prefer
1841 * alt 3 (HCI payload >= 60 Bytes let air packet
1842 * data satisfy 60 bytes), requiring
1843 * MTU >= 3 (packets) * 25 (size) - 3 (headers) = 72
1844 * see also Core spec 5, vol 4, B 2.1.1 & Table 2.1.
1845 */
1846 if (btusb_find_altsetting(data, 6))
1847 new_alts = 6;
1848 else if (btusb_find_altsetting(data, 3) &&
1849 hdev->sco_mtu >= 72 &&
1850 test_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags))
1851 new_alts = 3;
1852 else
1853 new_alts = 1;
1854 }
1855
1856 if (btusb_switch_alt_setting(hdev, new_alts) < 0)
1857 bt_dev_err(hdev, "set USB alt:(%d) failed!", new_alts);
1858 } else {
1859 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1860 usb_kill_anchored_urbs(&data->isoc_anchor);
1861
1862 __set_isoc_interface(hdev, 0);
1863 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1864 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1865 }
1866 }
1867
btusb_waker(struct work_struct * work)1868 static void btusb_waker(struct work_struct *work)
1869 {
1870 struct btusb_data *data = container_of(work, struct btusb_data, waker);
1871 int err;
1872
1873 err = usb_autopm_get_interface(data->intf);
1874 if (err < 0)
1875 return;
1876
1877 usb_autopm_put_interface(data->intf);
1878 }
1879
btusb_setup_bcm92035(struct hci_dev * hdev)1880 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1881 {
1882 struct sk_buff *skb;
1883 u8 val = 0x00;
1884
1885 BT_DBG("%s", hdev->name);
1886
1887 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1888 if (IS_ERR(skb))
1889 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
1890 else
1891 kfree_skb(skb);
1892
1893 return 0;
1894 }
1895
btusb_setup_csr(struct hci_dev * hdev)1896 static int btusb_setup_csr(struct hci_dev *hdev)
1897 {
1898 struct btusb_data *data = hci_get_drvdata(hdev);
1899 u16 bcdDevice = le16_to_cpu(data->udev->descriptor.bcdDevice);
1900 struct hci_rp_read_local_version *rp;
1901 struct sk_buff *skb;
1902 bool is_fake = false;
1903 int ret;
1904
1905 BT_DBG("%s", hdev->name);
1906
1907 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1908 HCI_INIT_TIMEOUT);
1909 if (IS_ERR(skb)) {
1910 int err = PTR_ERR(skb);
1911 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
1912 return err;
1913 }
1914
1915 if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1916 bt_dev_err(hdev, "CSR: Local version length mismatch");
1917 kfree_skb(skb);
1918 return -EIO;
1919 }
1920
1921 rp = (struct hci_rp_read_local_version *)skb->data;
1922
1923 bt_dev_info(hdev, "CSR: Setting up dongle with HCI ver=%u rev=%04x; LMP ver=%u subver=%04x; manufacturer=%u",
1924 le16_to_cpu(rp->hci_ver), le16_to_cpu(rp->hci_rev),
1925 le16_to_cpu(rp->lmp_ver), le16_to_cpu(rp->lmp_subver),
1926 le16_to_cpu(rp->manufacturer));
1927
1928 /* Detect a wide host of Chinese controllers that aren't CSR.
1929 *
1930 * Known fake bcdDevices: 0x0100, 0x0134, 0x1915, 0x2520, 0x7558, 0x8891
1931 *
1932 * The main thing they have in common is that these are really popular low-cost
1933 * options that support newer Bluetooth versions but rely on heavy VID/PID
1934 * squatting of this poor old Bluetooth 1.1 device. Even sold as such.
1935 *
1936 * We detect actual CSR devices by checking that the HCI manufacturer code
1937 * is Cambridge Silicon Radio (10) and ensuring that LMP sub-version and
1938 * HCI rev values always match. As they both store the firmware number.
1939 */
1940 if (le16_to_cpu(rp->manufacturer) != 10 ||
1941 le16_to_cpu(rp->hci_rev) != le16_to_cpu(rp->lmp_subver))
1942 is_fake = true;
1943
1944 /* Known legit CSR firmware build numbers and their supported BT versions:
1945 * - 1.1 (0x1) -> 0x0073, 0x020d, 0x033c, 0x034e
1946 * - 1.2 (0x2) -> 0x04d9, 0x0529
1947 * - 2.0 (0x3) -> 0x07a6, 0x07ad, 0x0c5c
1948 * - 2.1 (0x4) -> 0x149c, 0x1735, 0x1899 (0x1899 is a BlueCore4-External)
1949 * - 4.0 (0x6) -> 0x1d86, 0x2031, 0x22bb
1950 *
1951 * e.g. Real CSR dongles with LMP subversion 0x73 are old enough that
1952 * support BT 1.1 only; so it's a dead giveaway when some
1953 * third-party BT 4.0 dongle reuses it.
1954 */
1955 else if (le16_to_cpu(rp->lmp_subver) <= 0x034e &&
1956 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_1)
1957 is_fake = true;
1958
1959 else if (le16_to_cpu(rp->lmp_subver) <= 0x0529 &&
1960 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_2)
1961 is_fake = true;
1962
1963 else if (le16_to_cpu(rp->lmp_subver) <= 0x0c5c &&
1964 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_0)
1965 is_fake = true;
1966
1967 else if (le16_to_cpu(rp->lmp_subver) <= 0x1899 &&
1968 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_1)
1969 is_fake = true;
1970
1971 else if (le16_to_cpu(rp->lmp_subver) <= 0x22bb &&
1972 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_4_0)
1973 is_fake = true;
1974
1975 /* Other clones which beat all the above checks */
1976 else if (bcdDevice == 0x0134 &&
1977 le16_to_cpu(rp->lmp_subver) == 0x0c5c &&
1978 le16_to_cpu(rp->hci_ver) == BLUETOOTH_VER_2_0)
1979 is_fake = true;
1980
1981 if (is_fake) {
1982 bt_dev_warn(hdev, "CSR: Unbranded CSR clone detected; adding workarounds and force-suspending once...");
1983
1984 /* Generally these clones have big discrepancies between
1985 * advertised features and what's actually supported.
1986 * Probably will need to be expanded in the future;
1987 * without these the controller will lock up.
1988 */
1989 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1990 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks);
1991
1992 /* Clear the reset quirk since this is not an actual
1993 * early Bluetooth 1.1 device from CSR.
1994 */
1995 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1996 clear_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
1997
1998 /*
1999 * Special workaround for these BT 4.0 chip clones, and potentially more:
2000 *
2001 * - 0x0134: a Barrot 8041a02 (HCI rev: 0x1012 sub: 0x0810)
2002 * - 0x7558: IC markings FR3191AHAL 749H15143 (HCI rev/sub-version: 0x0709)
2003 *
2004 * These controllers are really messed-up.
2005 *
2006 * 1. Their bulk RX endpoint will never report any data unless
2007 * the device was suspended at least once (yes, really).
2008 * 2. They will not wakeup when autosuspended and receiving data
2009 * on their bulk RX endpoint from e.g. a keyboard or mouse
2010 * (IOW remote-wakeup support is broken for the bulk endpoint).
2011 *
2012 * To fix 1. enable runtime-suspend, force-suspend the
2013 * HCI and then wake-it up by disabling runtime-suspend.
2014 *
2015 * To fix 2. clear the HCI's can_wake flag, this way the HCI
2016 * will still be autosuspended when it is not open.
2017 *
2018 * --
2019 *
2020 * Because these are widespread problems we prefer generic solutions; so
2021 * apply this initialization quirk to every controller that gets here,
2022 * it should be harmless. The alternative is to not work at all.
2023 */
2024 pm_runtime_allow(&data->udev->dev);
2025
2026 ret = pm_runtime_suspend(&data->udev->dev);
2027 if (ret >= 0)
2028 msleep(200);
2029 else
2030 bt_dev_err(hdev, "CSR: Failed to suspend the device for our Barrot 8041a02 receive-issue workaround");
2031
2032 pm_runtime_forbid(&data->udev->dev);
2033
2034 device_set_wakeup_capable(&data->udev->dev, false);
2035
2036 /* Re-enable autosuspend if this was requested */
2037 if (enable_autosuspend)
2038 usb_enable_autosuspend(data->udev);
2039 }
2040
2041 kfree_skb(skb);
2042
2043 return 0;
2044 }
2045
inject_cmd_complete(struct hci_dev * hdev,__u16 opcode)2046 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
2047 {
2048 struct sk_buff *skb;
2049 struct hci_event_hdr *hdr;
2050 struct hci_ev_cmd_complete *evt;
2051
2052 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
2053 if (!skb)
2054 return -ENOMEM;
2055
2056 hdr = skb_put(skb, sizeof(*hdr));
2057 hdr->evt = HCI_EV_CMD_COMPLETE;
2058 hdr->plen = sizeof(*evt) + 1;
2059
2060 evt = skb_put(skb, sizeof(*evt));
2061 evt->ncmd = 0x01;
2062 evt->opcode = cpu_to_le16(opcode);
2063
2064 skb_put_u8(skb, 0x00);
2065
2066 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2067
2068 return hci_recv_frame(hdev, skb);
2069 }
2070
btusb_recv_bulk_intel(struct btusb_data * data,void * buffer,int count)2071 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
2072 int count)
2073 {
2074 struct hci_dev *hdev = data->hdev;
2075
2076 /* When the device is in bootloader mode, then it can send
2077 * events via the bulk endpoint. These events are treated the
2078 * same way as the ones received from the interrupt endpoint.
2079 */
2080 if (btintel_test_flag(hdev, INTEL_BOOTLOADER))
2081 return btusb_recv_intr(data, buffer, count);
2082
2083 return btusb_recv_bulk(data, buffer, count);
2084 }
2085
btusb_recv_event_intel(struct hci_dev * hdev,struct sk_buff * skb)2086 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2087 {
2088 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) {
2089 struct hci_event_hdr *hdr = (void *)skb->data;
2090
2091 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2092 hdr->plen > 0) {
2093 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2094 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2095
2096 switch (skb->data[2]) {
2097 case 0x02:
2098 /* When switching to the operational firmware
2099 * the device sends a vendor specific event
2100 * indicating that the bootup completed.
2101 */
2102 btintel_bootup(hdev, ptr, len);
2103 break;
2104 case 0x06:
2105 /* When the firmware loading completes the
2106 * device sends out a vendor specific event
2107 * indicating the result of the firmware
2108 * loading.
2109 */
2110 btintel_secure_send_result(hdev, ptr, len);
2111 break;
2112 }
2113 }
2114 }
2115
2116 return hci_recv_frame(hdev, skb);
2117 }
2118
btusb_send_frame_intel(struct hci_dev * hdev,struct sk_buff * skb)2119 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2120 {
2121 struct urb *urb;
2122
2123 BT_DBG("%s", hdev->name);
2124
2125 switch (hci_skb_pkt_type(skb)) {
2126 case HCI_COMMAND_PKT:
2127 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) {
2128 struct hci_command_hdr *cmd = (void *)skb->data;
2129 __u16 opcode = le16_to_cpu(cmd->opcode);
2130
2131 /* When in bootloader mode and the command 0xfc09
2132 * is received, it needs to be send down the
2133 * bulk endpoint. So allocate a bulk URB instead.
2134 */
2135 if (opcode == 0xfc09)
2136 urb = alloc_bulk_urb(hdev, skb);
2137 else
2138 urb = alloc_ctrl_urb(hdev, skb);
2139
2140 /* When the 0xfc01 command is issued to boot into
2141 * the operational firmware, it will actually not
2142 * send a command complete event. To keep the flow
2143 * control working inject that event here.
2144 */
2145 if (opcode == 0xfc01)
2146 inject_cmd_complete(hdev, opcode);
2147 } else {
2148 urb = alloc_ctrl_urb(hdev, skb);
2149 }
2150 if (IS_ERR(urb))
2151 return PTR_ERR(urb);
2152
2153 hdev->stat.cmd_tx++;
2154 return submit_or_queue_tx_urb(hdev, urb);
2155
2156 case HCI_ACLDATA_PKT:
2157 urb = alloc_bulk_urb(hdev, skb);
2158 if (IS_ERR(urb))
2159 return PTR_ERR(urb);
2160
2161 hdev->stat.acl_tx++;
2162 return submit_or_queue_tx_urb(hdev, urb);
2163
2164 case HCI_SCODATA_PKT:
2165 if (hci_conn_num(hdev, SCO_LINK) < 1)
2166 return -ENODEV;
2167
2168 urb = alloc_isoc_urb(hdev, skb);
2169 if (IS_ERR(urb))
2170 return PTR_ERR(urb);
2171
2172 hdev->stat.sco_tx++;
2173 return submit_tx_urb(hdev, urb);
2174 }
2175
2176 return -EILSEQ;
2177 }
2178
2179 /* UHW CR mapping */
2180 #define MTK_BT_MISC 0x70002510
2181 #define MTK_BT_SUBSYS_RST 0x70002610
2182 #define MTK_UDMA_INT_STA_BT 0x74000024
2183 #define MTK_UDMA_INT_STA_BT1 0x74000308
2184 #define MTK_BT_WDT_STATUS 0x740003A0
2185 #define MTK_EP_RST_OPT 0x74011890
2186 #define MTK_EP_RST_IN_OUT_OPT 0x00010001
2187 #define MTK_BT_RST_DONE 0x00000100
2188 #define MTK_BT_RESET_WAIT_MS 100
2189 #define MTK_BT_RESET_NUM_TRIES 10
2190 #define FIRMWARE_MT7663 "mediatek/mt7663pr2h.bin"
2191 #define FIRMWARE_MT7668 "mediatek/mt7668pr2h.bin"
2192
2193 #define HCI_WMT_MAX_EVENT_SIZE 64
2194 /* It is for mt79xx download rom patch*/
2195 #define MTK_FW_ROM_PATCH_HEADER_SIZE 32
2196 #define MTK_FW_ROM_PATCH_GD_SIZE 64
2197 #define MTK_FW_ROM_PATCH_SEC_MAP_SIZE 64
2198 #define MTK_SEC_MAP_COMMON_SIZE 12
2199 #define MTK_SEC_MAP_NEED_SEND_SIZE 52
2200
2201 enum {
2202 BTMTK_WMT_PATCH_DWNLD = 0x1,
2203 BTMTK_WMT_FUNC_CTRL = 0x6,
2204 BTMTK_WMT_RST = 0x7,
2205 BTMTK_WMT_SEMAPHORE = 0x17,
2206 };
2207
2208 enum {
2209 BTMTK_WMT_INVALID,
2210 BTMTK_WMT_PATCH_UNDONE,
2211 BTMTK_WMT_PATCH_PROGRESS,
2212 BTMTK_WMT_PATCH_DONE,
2213 BTMTK_WMT_ON_UNDONE,
2214 BTMTK_WMT_ON_DONE,
2215 BTMTK_WMT_ON_PROGRESS,
2216 };
2217
2218 struct btmtk_wmt_hdr {
2219 u8 dir;
2220 u8 op;
2221 __le16 dlen;
2222 u8 flag;
2223 } __packed;
2224
2225 struct btmtk_hci_wmt_cmd {
2226 struct btmtk_wmt_hdr hdr;
2227 u8 data[];
2228 } __packed;
2229
2230 struct btmtk_hci_wmt_evt {
2231 struct hci_event_hdr hhdr;
2232 struct btmtk_wmt_hdr whdr;
2233 } __packed;
2234
2235 struct btmtk_hci_wmt_evt_funcc {
2236 struct btmtk_hci_wmt_evt hwhdr;
2237 __be16 status;
2238 } __packed;
2239
2240 struct btmtk_tci_sleep {
2241 u8 mode;
2242 __le16 duration;
2243 __le16 host_duration;
2244 u8 host_wakeup_pin;
2245 u8 time_compensation;
2246 } __packed;
2247
2248 struct btmtk_hci_wmt_params {
2249 u8 op;
2250 u8 flag;
2251 u16 dlen;
2252 const void *data;
2253 u32 *status;
2254 };
2255
2256 struct btmtk_patch_header {
2257 u8 datetime[16];
2258 u8 platform[4];
2259 __le16 hwver;
2260 __le16 swver;
2261 __le32 magicnum;
2262 } __packed;
2263
2264 struct btmtk_global_desc {
2265 __le32 patch_ver;
2266 __le32 sub_sys;
2267 __le32 feature_opt;
2268 __le32 section_num;
2269 } __packed;
2270
2271 struct btmtk_section_map {
2272 __le32 sectype;
2273 __le32 secoffset;
2274 __le32 secsize;
2275 union {
2276 __le32 u4SecSpec[13];
2277 struct {
2278 __le32 dlAddr;
2279 __le32 dlsize;
2280 __le32 seckeyidx;
2281 __le32 alignlen;
2282 __le32 sectype;
2283 __le32 dlmodecrctype;
2284 __le32 crc;
2285 __le32 reserved[6];
2286 } bin_info_spec;
2287 };
2288 } __packed;
2289
btusb_mtk_wmt_recv(struct urb * urb)2290 static void btusb_mtk_wmt_recv(struct urb *urb)
2291 {
2292 struct hci_dev *hdev = urb->context;
2293 struct btusb_data *data = hci_get_drvdata(hdev);
2294 struct hci_event_hdr *hdr;
2295 struct sk_buff *skb;
2296 int err;
2297
2298 if (urb->status == 0 && urb->actual_length > 0) {
2299 hdev->stat.byte_rx += urb->actual_length;
2300
2301 /* WMT event shouldn't be fragmented and the size should be
2302 * less than HCI_WMT_MAX_EVENT_SIZE.
2303 */
2304 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
2305 if (!skb) {
2306 hdev->stat.err_rx++;
2307 kfree(urb->setup_packet);
2308 return;
2309 }
2310
2311 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2312 skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
2313
2314 hdr = (void *)skb->data;
2315 /* Fix up the vendor event id with 0xff for vendor specific
2316 * instead of 0xe4 so that event send via monitoring socket can
2317 * be parsed properly.
2318 */
2319 hdr->evt = 0xff;
2320
2321 /* When someone waits for the WMT event, the skb is being cloned
2322 * and being processed the events from there then.
2323 */
2324 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
2325 data->evt_skb = skb_clone(skb, GFP_ATOMIC);
2326 if (!data->evt_skb) {
2327 kfree_skb(skb);
2328 kfree(urb->setup_packet);
2329 return;
2330 }
2331 }
2332
2333 err = hci_recv_frame(hdev, skb);
2334 if (err < 0) {
2335 kfree_skb(data->evt_skb);
2336 data->evt_skb = NULL;
2337 kfree(urb->setup_packet);
2338 return;
2339 }
2340
2341 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
2342 &data->flags)) {
2343 /* Barrier to sync with other CPUs */
2344 smp_mb__after_atomic();
2345 wake_up_bit(&data->flags,
2346 BTUSB_TX_WAIT_VND_EVT);
2347 }
2348 kfree(urb->setup_packet);
2349 return;
2350 } else if (urb->status == -ENOENT) {
2351 /* Avoid suspend failed when usb_kill_urb */
2352 return;
2353 }
2354
2355 usb_mark_last_busy(data->udev);
2356
2357 /* The URB complete handler is still called with urb->actual_length = 0
2358 * when the event is not available, so we should keep re-submitting
2359 * URB until WMT event returns, Also, It's necessary to wait some time
2360 * between the two consecutive control URBs to relax the target device
2361 * to generate the event. Otherwise, the WMT event cannot return from
2362 * the device successfully.
2363 */
2364 udelay(500);
2365
2366 usb_anchor_urb(urb, &data->ctrl_anchor);
2367 err = usb_submit_urb(urb, GFP_ATOMIC);
2368 if (err < 0) {
2369 kfree(urb->setup_packet);
2370 /* -EPERM: urb is being killed;
2371 * -ENODEV: device got disconnected
2372 */
2373 if (err != -EPERM && err != -ENODEV)
2374 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
2375 urb, -err);
2376 usb_unanchor_urb(urb);
2377 }
2378 }
2379
btusb_mtk_submit_wmt_recv_urb(struct hci_dev * hdev)2380 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
2381 {
2382 struct btusb_data *data = hci_get_drvdata(hdev);
2383 struct usb_ctrlrequest *dr;
2384 unsigned char *buf;
2385 int err, size = 64;
2386 unsigned int pipe;
2387 struct urb *urb;
2388
2389 urb = usb_alloc_urb(0, GFP_KERNEL);
2390 if (!urb)
2391 return -ENOMEM;
2392
2393 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
2394 if (!dr) {
2395 usb_free_urb(urb);
2396 return -ENOMEM;
2397 }
2398
2399 dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
2400 dr->bRequest = 1;
2401 dr->wIndex = cpu_to_le16(0);
2402 dr->wValue = cpu_to_le16(48);
2403 dr->wLength = cpu_to_le16(size);
2404
2405 buf = kmalloc(size, GFP_KERNEL);
2406 if (!buf) {
2407 kfree(dr);
2408 usb_free_urb(urb);
2409 return -ENOMEM;
2410 }
2411
2412 pipe = usb_rcvctrlpipe(data->udev, 0);
2413
2414 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
2415 buf, size, btusb_mtk_wmt_recv, hdev);
2416
2417 urb->transfer_flags |= URB_FREE_BUFFER;
2418
2419 usb_anchor_urb(urb, &data->ctrl_anchor);
2420 err = usb_submit_urb(urb, GFP_KERNEL);
2421 if (err < 0) {
2422 if (err != -EPERM && err != -ENODEV)
2423 bt_dev_err(hdev, "urb %p submission failed (%d)",
2424 urb, -err);
2425 usb_unanchor_urb(urb);
2426 }
2427
2428 usb_free_urb(urb);
2429
2430 return err;
2431 }
2432
btusb_mtk_hci_wmt_sync(struct hci_dev * hdev,struct btmtk_hci_wmt_params * wmt_params)2433 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
2434 struct btmtk_hci_wmt_params *wmt_params)
2435 {
2436 struct btusb_data *data = hci_get_drvdata(hdev);
2437 struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
2438 u32 hlen, status = BTMTK_WMT_INVALID;
2439 struct btmtk_hci_wmt_evt *wmt_evt;
2440 struct btmtk_hci_wmt_cmd *wc;
2441 struct btmtk_wmt_hdr *hdr;
2442 int err;
2443
2444 /* Send the WMT command and wait until the WMT event returns */
2445 hlen = sizeof(*hdr) + wmt_params->dlen;
2446 if (hlen > 255)
2447 return -EINVAL;
2448
2449 wc = kzalloc(hlen, GFP_KERNEL);
2450 if (!wc)
2451 return -ENOMEM;
2452
2453 hdr = &wc->hdr;
2454 hdr->dir = 1;
2455 hdr->op = wmt_params->op;
2456 hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
2457 hdr->flag = wmt_params->flag;
2458 memcpy(wc->data, wmt_params->data, wmt_params->dlen);
2459
2460 set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2461
2462 /* WMT cmd/event doesn't follow up the generic HCI cmd/event handling,
2463 * it needs constantly polling control pipe until the host received the
2464 * WMT event, thus, we should require to specifically acquire PM counter
2465 * on the USB to prevent the interface from entering auto suspended
2466 * while WMT cmd/event in progress.
2467 */
2468 err = usb_autopm_get_interface(data->intf);
2469 if (err < 0)
2470 goto err_free_wc;
2471
2472 err = __hci_cmd_send(hdev, 0xfc6f, hlen, wc);
2473
2474 if (err < 0) {
2475 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2476 usb_autopm_put_interface(data->intf);
2477 goto err_free_wc;
2478 }
2479
2480 /* Submit control IN URB on demand to process the WMT event */
2481 err = btusb_mtk_submit_wmt_recv_urb(hdev);
2482
2483 usb_autopm_put_interface(data->intf);
2484
2485 if (err < 0)
2486 goto err_free_wc;
2487
2488 /* The vendor specific WMT commands are all answered by a vendor
2489 * specific event and will have the Command Status or Command
2490 * Complete as with usual HCI command flow control.
2491 *
2492 * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
2493 * state to be cleared. The driver specific event receive routine
2494 * will clear that state and with that indicate completion of the
2495 * WMT command.
2496 */
2497 err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
2498 TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
2499 if (err == -EINTR) {
2500 bt_dev_err(hdev, "Execution of wmt command interrupted");
2501 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2502 goto err_free_wc;
2503 }
2504
2505 if (err) {
2506 bt_dev_err(hdev, "Execution of wmt command timed out");
2507 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2508 err = -ETIMEDOUT;
2509 goto err_free_wc;
2510 }
2511
2512 if (data->evt_skb == NULL)
2513 goto err_free_wc;
2514
2515 /* Parse and handle the return WMT event */
2516 wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
2517 if (wmt_evt->whdr.op != hdr->op) {
2518 bt_dev_err(hdev, "Wrong op received %d expected %d",
2519 wmt_evt->whdr.op, hdr->op);
2520 err = -EIO;
2521 goto err_free_skb;
2522 }
2523
2524 switch (wmt_evt->whdr.op) {
2525 case BTMTK_WMT_SEMAPHORE:
2526 if (wmt_evt->whdr.flag == 2)
2527 status = BTMTK_WMT_PATCH_UNDONE;
2528 else
2529 status = BTMTK_WMT_PATCH_DONE;
2530 break;
2531 case BTMTK_WMT_FUNC_CTRL:
2532 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
2533 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
2534 status = BTMTK_WMT_ON_DONE;
2535 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
2536 status = BTMTK_WMT_ON_PROGRESS;
2537 else
2538 status = BTMTK_WMT_ON_UNDONE;
2539 break;
2540 case BTMTK_WMT_PATCH_DWNLD:
2541 if (wmt_evt->whdr.flag == 2)
2542 status = BTMTK_WMT_PATCH_DONE;
2543 else if (wmt_evt->whdr.flag == 1)
2544 status = BTMTK_WMT_PATCH_PROGRESS;
2545 else
2546 status = BTMTK_WMT_PATCH_UNDONE;
2547 break;
2548 }
2549
2550 if (wmt_params->status)
2551 *wmt_params->status = status;
2552
2553 err_free_skb:
2554 kfree_skb(data->evt_skb);
2555 data->evt_skb = NULL;
2556 err_free_wc:
2557 kfree(wc);
2558 return err;
2559 }
2560
btusb_mtk_setup_firmware_79xx(struct hci_dev * hdev,const char * fwname)2561 static int btusb_mtk_setup_firmware_79xx(struct hci_dev *hdev, const char *fwname)
2562 {
2563 struct btmtk_hci_wmt_params wmt_params;
2564 struct btmtk_global_desc *globaldesc = NULL;
2565 struct btmtk_section_map *sectionmap;
2566 const struct firmware *fw;
2567 const u8 *fw_ptr;
2568 const u8 *fw_bin_ptr;
2569 int err, dlen, i, status;
2570 u8 flag, first_block, retry;
2571 u32 section_num, dl_size, section_offset;
2572 u8 cmd[64];
2573
2574 err = request_firmware(&fw, fwname, &hdev->dev);
2575 if (err < 0) {
2576 bt_dev_err(hdev, "Failed to load firmware file (%d)", err);
2577 return err;
2578 }
2579
2580 fw_ptr = fw->data;
2581 fw_bin_ptr = fw_ptr;
2582 globaldesc = (struct btmtk_global_desc *)(fw_ptr + MTK_FW_ROM_PATCH_HEADER_SIZE);
2583 section_num = le32_to_cpu(globaldesc->section_num);
2584
2585 for (i = 0; i < section_num; i++) {
2586 first_block = 1;
2587 fw_ptr = fw_bin_ptr;
2588 sectionmap = (struct btmtk_section_map *)(fw_ptr + MTK_FW_ROM_PATCH_HEADER_SIZE +
2589 MTK_FW_ROM_PATCH_GD_SIZE + MTK_FW_ROM_PATCH_SEC_MAP_SIZE * i);
2590
2591 section_offset = le32_to_cpu(sectionmap->secoffset);
2592 dl_size = le32_to_cpu(sectionmap->bin_info_spec.dlsize);
2593
2594 if (dl_size > 0) {
2595 retry = 20;
2596 while (retry > 0) {
2597 cmd[0] = 0; /* 0 means legacy dl mode. */
2598 memcpy(cmd + 1,
2599 fw_ptr + MTK_FW_ROM_PATCH_HEADER_SIZE +
2600 MTK_FW_ROM_PATCH_GD_SIZE + MTK_FW_ROM_PATCH_SEC_MAP_SIZE * i +
2601 MTK_SEC_MAP_COMMON_SIZE,
2602 MTK_SEC_MAP_NEED_SEND_SIZE + 1);
2603
2604 wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
2605 wmt_params.status = &status;
2606 wmt_params.flag = 0;
2607 wmt_params.dlen = MTK_SEC_MAP_NEED_SEND_SIZE + 1;
2608 wmt_params.data = &cmd;
2609
2610 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2611 if (err < 0) {
2612 bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
2613 err);
2614 goto err_release_fw;
2615 }
2616
2617 if (status == BTMTK_WMT_PATCH_UNDONE) {
2618 break;
2619 } else if (status == BTMTK_WMT_PATCH_PROGRESS) {
2620 msleep(100);
2621 retry--;
2622 } else if (status == BTMTK_WMT_PATCH_DONE) {
2623 goto next_section;
2624 } else {
2625 bt_dev_err(hdev, "Failed wmt patch dwnld status (%d)",
2626 status);
2627 err = -EIO;
2628 goto err_release_fw;
2629 }
2630 }
2631
2632 fw_ptr += section_offset;
2633 wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
2634 wmt_params.status = NULL;
2635
2636 while (dl_size > 0) {
2637 dlen = min_t(int, 250, dl_size);
2638 if (first_block == 1) {
2639 flag = 1;
2640 first_block = 0;
2641 } else if (dl_size - dlen <= 0) {
2642 flag = 3;
2643 } else {
2644 flag = 2;
2645 }
2646
2647 wmt_params.flag = flag;
2648 wmt_params.dlen = dlen;
2649 wmt_params.data = fw_ptr;
2650
2651 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2652 if (err < 0) {
2653 bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
2654 err);
2655 goto err_release_fw;
2656 }
2657
2658 dl_size -= dlen;
2659 fw_ptr += dlen;
2660 }
2661 }
2662 next_section:
2663 continue;
2664 }
2665 /* Wait a few moments for firmware activation done */
2666 usleep_range(100000, 120000);
2667
2668 err_release_fw:
2669 release_firmware(fw);
2670
2671 return err;
2672 }
2673
btusb_mtk_setup_firmware(struct hci_dev * hdev,const char * fwname)2674 static int btusb_mtk_setup_firmware(struct hci_dev *hdev, const char *fwname)
2675 {
2676 struct btmtk_hci_wmt_params wmt_params;
2677 const struct firmware *fw;
2678 const u8 *fw_ptr;
2679 size_t fw_size;
2680 int err, dlen;
2681 u8 flag, param;
2682
2683 err = request_firmware(&fw, fwname, &hdev->dev);
2684 if (err < 0) {
2685 bt_dev_err(hdev, "Failed to load firmware file (%d)", err);
2686 return err;
2687 }
2688
2689 /* Power on data RAM the firmware relies on. */
2690 param = 1;
2691 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2692 wmt_params.flag = 3;
2693 wmt_params.dlen = sizeof(param);
2694 wmt_params.data = ¶m;
2695 wmt_params.status = NULL;
2696
2697 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2698 if (err < 0) {
2699 bt_dev_err(hdev, "Failed to power on data RAM (%d)", err);
2700 goto err_release_fw;
2701 }
2702
2703 fw_ptr = fw->data;
2704 fw_size = fw->size;
2705
2706 /* The size of patch header is 30 bytes, should be skip */
2707 if (fw_size < 30) {
2708 err = -EINVAL;
2709 goto err_release_fw;
2710 }
2711
2712 fw_size -= 30;
2713 fw_ptr += 30;
2714 flag = 1;
2715
2716 wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
2717 wmt_params.status = NULL;
2718
2719 while (fw_size > 0) {
2720 dlen = min_t(int, 250, fw_size);
2721
2722 /* Tell device the position in sequence */
2723 if (fw_size - dlen <= 0)
2724 flag = 3;
2725 else if (fw_size < fw->size - 30)
2726 flag = 2;
2727
2728 wmt_params.flag = flag;
2729 wmt_params.dlen = dlen;
2730 wmt_params.data = fw_ptr;
2731
2732 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2733 if (err < 0) {
2734 bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
2735 err);
2736 goto err_release_fw;
2737 }
2738
2739 fw_size -= dlen;
2740 fw_ptr += dlen;
2741 }
2742
2743 wmt_params.op = BTMTK_WMT_RST;
2744 wmt_params.flag = 4;
2745 wmt_params.dlen = 0;
2746 wmt_params.data = NULL;
2747 wmt_params.status = NULL;
2748
2749 /* Activate funciton the firmware providing to */
2750 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2751 if (err < 0) {
2752 bt_dev_err(hdev, "Failed to send wmt rst (%d)", err);
2753 goto err_release_fw;
2754 }
2755
2756 /* Wait a few moments for firmware activation done */
2757 usleep_range(10000, 12000);
2758
2759 err_release_fw:
2760 release_firmware(fw);
2761
2762 return err;
2763 }
2764
btusb_mtk_func_query(struct hci_dev * hdev)2765 static int btusb_mtk_func_query(struct hci_dev *hdev)
2766 {
2767 struct btmtk_hci_wmt_params wmt_params;
2768 int status, err;
2769 u8 param = 0;
2770
2771 /* Query whether the function is enabled */
2772 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2773 wmt_params.flag = 4;
2774 wmt_params.dlen = sizeof(param);
2775 wmt_params.data = ¶m;
2776 wmt_params.status = &status;
2777
2778 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2779 if (err < 0) {
2780 bt_dev_err(hdev, "Failed to query function status (%d)", err);
2781 return err;
2782 }
2783
2784 return status;
2785 }
2786
btusb_mtk_uhw_reg_write(struct btusb_data * data,u32 reg,u32 val)2787 static int btusb_mtk_uhw_reg_write(struct btusb_data *data, u32 reg, u32 val)
2788 {
2789 struct hci_dev *hdev = data->hdev;
2790 int pipe, err;
2791 void *buf;
2792
2793 buf = kzalloc(4, GFP_KERNEL);
2794 if (!buf)
2795 return -ENOMEM;
2796
2797 put_unaligned_le32(val, buf);
2798
2799 pipe = usb_sndctrlpipe(data->udev, 0);
2800 err = usb_control_msg(data->udev, pipe, 0x02,
2801 0x5E,
2802 reg >> 16, reg & 0xffff,
2803 buf, 4, USB_CTRL_SET_TIMEOUT);
2804 if (err < 0) {
2805 bt_dev_err(hdev, "Failed to write uhw reg(%d)", err);
2806 goto err_free_buf;
2807 }
2808
2809 err_free_buf:
2810 kfree(buf);
2811
2812 return err;
2813 }
2814
btusb_mtk_uhw_reg_read(struct btusb_data * data,u32 reg,u32 * val)2815 static int btusb_mtk_uhw_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2816 {
2817 struct hci_dev *hdev = data->hdev;
2818 int pipe, err;
2819 void *buf;
2820
2821 buf = kzalloc(4, GFP_KERNEL);
2822 if (!buf)
2823 return -ENOMEM;
2824
2825 pipe = usb_rcvctrlpipe(data->udev, 0);
2826 err = usb_control_msg(data->udev, pipe, 0x01,
2827 0xDE,
2828 reg >> 16, reg & 0xffff,
2829 buf, 4, USB_CTRL_SET_TIMEOUT);
2830 if (err < 0) {
2831 bt_dev_err(hdev, "Failed to read uhw reg(%d)", err);
2832 goto err_free_buf;
2833 }
2834
2835 *val = get_unaligned_le32(buf);
2836 bt_dev_dbg(hdev, "reg=%x, value=0x%08x", reg, *val);
2837
2838 err_free_buf:
2839 kfree(buf);
2840
2841 return err;
2842 }
2843
btusb_mtk_reg_read(struct btusb_data * data,u32 reg,u32 * val)2844 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2845 {
2846 int pipe, err, size = sizeof(u32);
2847 void *buf;
2848
2849 buf = kzalloc(size, GFP_KERNEL);
2850 if (!buf)
2851 return -ENOMEM;
2852
2853 pipe = usb_rcvctrlpipe(data->udev, 0);
2854 err = usb_control_msg(data->udev, pipe, 0x63,
2855 USB_TYPE_VENDOR | USB_DIR_IN,
2856 reg >> 16, reg & 0xffff,
2857 buf, size, USB_CTRL_SET_TIMEOUT);
2858 if (err < 0)
2859 goto err_free_buf;
2860
2861 *val = get_unaligned_le32(buf);
2862
2863 err_free_buf:
2864 kfree(buf);
2865
2866 return err;
2867 }
2868
btusb_mtk_id_get(struct btusb_data * data,u32 reg,u32 * id)2869 static int btusb_mtk_id_get(struct btusb_data *data, u32 reg, u32 *id)
2870 {
2871 return btusb_mtk_reg_read(data, reg, id);
2872 }
2873
btusb_mtk_setup(struct hci_dev * hdev)2874 static int btusb_mtk_setup(struct hci_dev *hdev)
2875 {
2876 struct btusb_data *data = hci_get_drvdata(hdev);
2877 struct btmtk_hci_wmt_params wmt_params;
2878 ktime_t calltime, delta, rettime;
2879 struct btmtk_tci_sleep tci_sleep;
2880 unsigned long long duration;
2881 struct sk_buff *skb;
2882 const char *fwname;
2883 int err, status;
2884 u32 dev_id;
2885 char fw_bin_name[64];
2886 u32 fw_version = 0;
2887 u8 param;
2888
2889 calltime = ktime_get();
2890
2891 err = btusb_mtk_id_get(data, 0x80000008, &dev_id);
2892 if (err < 0) {
2893 bt_dev_err(hdev, "Failed to get device id (%d)", err);
2894 return err;
2895 }
2896
2897 if (!dev_id) {
2898 err = btusb_mtk_id_get(data, 0x70010200, &dev_id);
2899 if (err < 0) {
2900 bt_dev_err(hdev, "Failed to get device id (%d)", err);
2901 return err;
2902 }
2903 err = btusb_mtk_id_get(data, 0x80021004, &fw_version);
2904 if (err < 0) {
2905 bt_dev_err(hdev, "Failed to get fw version (%d)", err);
2906 return err;
2907 }
2908 }
2909
2910 switch (dev_id) {
2911 case 0x7663:
2912 fwname = FIRMWARE_MT7663;
2913 break;
2914 case 0x7668:
2915 fwname = FIRMWARE_MT7668;
2916 break;
2917 case 0x7922:
2918 case 0x7961:
2919 snprintf(fw_bin_name, sizeof(fw_bin_name),
2920 "mediatek/BT_RAM_CODE_MT%04x_1_%x_hdr.bin",
2921 dev_id & 0xffff, (fw_version & 0xff) + 1);
2922 err = btusb_mtk_setup_firmware_79xx(hdev, fw_bin_name);
2923 if (err < 0) {
2924 bt_dev_err(hdev, "Failed to set up firmware (%d)", err);
2925 return err;
2926 }
2927
2928 /* It's Device EndPoint Reset Option Register */
2929 btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT);
2930
2931 /* Enable Bluetooth protocol */
2932 param = 1;
2933 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2934 wmt_params.flag = 0;
2935 wmt_params.dlen = sizeof(param);
2936 wmt_params.data = ¶m;
2937 wmt_params.status = NULL;
2938
2939 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2940 if (err < 0) {
2941 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
2942 return err;
2943 }
2944
2945 hci_set_msft_opcode(hdev, 0xFD30);
2946 hci_set_aosp_capable(hdev);
2947 goto done;
2948 default:
2949 bt_dev_err(hdev, "Unsupported hardware variant (%08x)",
2950 dev_id);
2951 return -ENODEV;
2952 }
2953
2954 /* Query whether the firmware is already download */
2955 wmt_params.op = BTMTK_WMT_SEMAPHORE;
2956 wmt_params.flag = 1;
2957 wmt_params.dlen = 0;
2958 wmt_params.data = NULL;
2959 wmt_params.status = &status;
2960
2961 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2962 if (err < 0) {
2963 bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
2964 return err;
2965 }
2966
2967 if (status == BTMTK_WMT_PATCH_DONE) {
2968 bt_dev_info(hdev, "firmware already downloaded");
2969 goto ignore_setup_fw;
2970 }
2971
2972 /* Setup a firmware which the device definitely requires */
2973 err = btusb_mtk_setup_firmware(hdev, fwname);
2974 if (err < 0)
2975 return err;
2976
2977 ignore_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
3008 ignore_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
3025 done:
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
btusb_mtk_shutdown(struct hci_dev * hdev)3035 static 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
btusb_mtk_cmd_timeout(struct hci_dev * hdev)3057 static 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
btusb_recv_acl_mtk(struct hci_dev * hdev,struct sk_buff * skb)3114 static 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 MODULE_FIRMWARE(FIRMWARE_MT7663);
3135 MODULE_FIRMWARE(FIRMWARE_MT7668);
3136
3137 #ifdef CONFIG_PM
3138 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
marvell_config_oob_wake(struct hci_dev * hdev)3139 static int marvell_config_oob_wake(struct hci_dev *hdev)
3140 {
3141 struct sk_buff *skb;
3142 struct btusb_data *data = hci_get_drvdata(hdev);
3143 struct device *dev = &data->udev->dev;
3144 u16 pin, gap, opcode;
3145 int ret;
3146 u8 cmd[5];
3147
3148 /* Move on if no wakeup pin specified */
3149 if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
3150 of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
3151 return 0;
3152
3153 /* Vendor specific command to configure a GPIO as wake-up pin */
3154 opcode = hci_opcode_pack(0x3F, 0x59);
3155 cmd[0] = opcode & 0xFF;
3156 cmd[1] = opcode >> 8;
3157 cmd[2] = 2; /* length of parameters that follow */
3158 cmd[3] = pin;
3159 cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
3160
3161 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
3162 if (!skb) {
3163 bt_dev_err(hdev, "%s: No memory", __func__);
3164 return -ENOMEM;
3165 }
3166
3167 skb_put_data(skb, cmd, sizeof(cmd));
3168 hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
3169
3170 ret = btusb_send_frame(hdev, skb);
3171 if (ret) {
3172 bt_dev_err(hdev, "%s: configuration failed", __func__);
3173 kfree_skb(skb);
3174 return ret;
3175 }
3176
3177 return 0;
3178 }
3179 #endif
3180
btusb_set_bdaddr_marvell(struct hci_dev * hdev,const bdaddr_t * bdaddr)3181 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
3182 const bdaddr_t *bdaddr)
3183 {
3184 struct sk_buff *skb;
3185 u8 buf[8];
3186 long ret;
3187
3188 buf[0] = 0xfe;
3189 buf[1] = sizeof(bdaddr_t);
3190 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
3191
3192 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3193 if (IS_ERR(skb)) {
3194 ret = PTR_ERR(skb);
3195 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
3196 ret);
3197 return ret;
3198 }
3199 kfree_skb(skb);
3200
3201 return 0;
3202 }
3203
btusb_set_bdaddr_ath3012(struct hci_dev * hdev,const bdaddr_t * bdaddr)3204 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3205 const bdaddr_t *bdaddr)
3206 {
3207 struct sk_buff *skb;
3208 u8 buf[10];
3209 long ret;
3210
3211 buf[0] = 0x01;
3212 buf[1] = 0x01;
3213 buf[2] = 0x00;
3214 buf[3] = sizeof(bdaddr_t);
3215 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3216
3217 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3218 if (IS_ERR(skb)) {
3219 ret = PTR_ERR(skb);
3220 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3221 return ret;
3222 }
3223 kfree_skb(skb);
3224
3225 return 0;
3226 }
3227
btusb_set_bdaddr_wcn6855(struct hci_dev * hdev,const bdaddr_t * bdaddr)3228 static int btusb_set_bdaddr_wcn6855(struct hci_dev *hdev,
3229 const bdaddr_t *bdaddr)
3230 {
3231 struct sk_buff *skb;
3232 u8 buf[6];
3233 long ret;
3234
3235 memcpy(buf, bdaddr, sizeof(bdaddr_t));
3236
3237 skb = __hci_cmd_sync_ev(hdev, 0xfc14, sizeof(buf), buf,
3238 HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
3239 if (IS_ERR(skb)) {
3240 ret = PTR_ERR(skb);
3241 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3242 return ret;
3243 }
3244 kfree_skb(skb);
3245
3246 return 0;
3247 }
3248
3249 #define QCA_DFU_PACKET_LEN 4096
3250
3251 #define QCA_GET_TARGET_VERSION 0x09
3252 #define QCA_CHECK_STATUS 0x05
3253 #define QCA_DFU_DOWNLOAD 0x01
3254
3255 #define QCA_SYSCFG_UPDATED 0x40
3256 #define QCA_PATCH_UPDATED 0x80
3257 #define QCA_DFU_TIMEOUT 3000
3258 #define QCA_FLAG_MULTI_NVM 0x80
3259
3260 struct qca_version {
3261 __le32 rom_version;
3262 __le32 patch_version;
3263 __le32 ram_version;
3264 __le16 board_id;
3265 __le16 flag;
3266 __u8 reserved[4];
3267 } __packed;
3268
3269 struct qca_rampatch_version {
3270 __le16 rom_version_high;
3271 __le16 rom_version_low;
3272 __le16 patch_version;
3273 } __packed;
3274
3275 struct qca_device_info {
3276 u32 rom_version;
3277 u8 rampatch_hdr; /* length of header in rampatch */
3278 u8 nvm_hdr; /* length of header in NVM */
3279 u8 ver_offset; /* offset of version structure in rampatch */
3280 };
3281
3282 static const struct qca_device_info qca_devices_table[] = {
3283 { 0x00000100, 20, 4, 8 }, /* Rome 1.0 */
3284 { 0x00000101, 20, 4, 8 }, /* Rome 1.1 */
3285 { 0x00000200, 28, 4, 16 }, /* Rome 2.0 */
3286 { 0x00000201, 28, 4, 16 }, /* Rome 2.1 */
3287 { 0x00000300, 28, 4, 16 }, /* Rome 3.0 */
3288 { 0x00000302, 28, 4, 16 }, /* Rome 3.2 */
3289 { 0x00130100, 40, 4, 16 }, /* WCN6855 1.0 */
3290 { 0x00130200, 40, 4, 16 }, /* WCN6855 2.0 */
3291 };
3292
btusb_qca_send_vendor_req(struct usb_device * udev,u8 request,void * data,u16 size)3293 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
3294 void *data, u16 size)
3295 {
3296 int pipe, err;
3297 u8 *buf;
3298
3299 buf = kmalloc(size, GFP_KERNEL);
3300 if (!buf)
3301 return -ENOMEM;
3302
3303 /* Found some of USB hosts have IOT issues with ours so that we should
3304 * not wait until HCI layer is ready.
3305 */
3306 pipe = usb_rcvctrlpipe(udev, 0);
3307 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
3308 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3309 if (err < 0) {
3310 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
3311 goto done;
3312 }
3313
3314 memcpy(data, buf, size);
3315
3316 done:
3317 kfree(buf);
3318
3319 return err;
3320 }
3321
btusb_setup_qca_download_fw(struct hci_dev * hdev,const struct firmware * firmware,size_t hdr_size)3322 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
3323 const struct firmware *firmware,
3324 size_t hdr_size)
3325 {
3326 struct btusb_data *btdata = hci_get_drvdata(hdev);
3327 struct usb_device *udev = btdata->udev;
3328 size_t count, size, sent = 0;
3329 int pipe, len, err;
3330 u8 *buf;
3331
3332 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
3333 if (!buf)
3334 return -ENOMEM;
3335
3336 count = firmware->size;
3337
3338 size = min_t(size_t, count, hdr_size);
3339 memcpy(buf, firmware->data, size);
3340
3341 /* USB patches should go down to controller through USB path
3342 * because binary format fits to go down through USB channel.
3343 * USB control path is for patching headers and USB bulk is for
3344 * patch body.
3345 */
3346 pipe = usb_sndctrlpipe(udev, 0);
3347 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
3348 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3349 if (err < 0) {
3350 bt_dev_err(hdev, "Failed to send headers (%d)", err);
3351 goto done;
3352 }
3353
3354 sent += size;
3355 count -= size;
3356
3357 /* ep2 need time to switch from function acl to function dfu,
3358 * so we add 20ms delay here.
3359 */
3360 msleep(20);
3361
3362 while (count) {
3363 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
3364
3365 memcpy(buf, firmware->data + sent, size);
3366
3367 pipe = usb_sndbulkpipe(udev, 0x02);
3368 err = usb_bulk_msg(udev, pipe, buf, size, &len,
3369 QCA_DFU_TIMEOUT);
3370 if (err < 0) {
3371 bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
3372 sent, firmware->size, err);
3373 break;
3374 }
3375
3376 if (size != len) {
3377 bt_dev_err(hdev, "Failed to get bulk buffer");
3378 err = -EILSEQ;
3379 break;
3380 }
3381
3382 sent += size;
3383 count -= size;
3384 }
3385
3386 done:
3387 kfree(buf);
3388 return err;
3389 }
3390
btusb_setup_qca_load_rampatch(struct hci_dev * hdev,struct qca_version * ver,const struct qca_device_info * info)3391 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
3392 struct qca_version *ver,
3393 const struct qca_device_info *info)
3394 {
3395 struct qca_rampatch_version *rver;
3396 const struct firmware *fw;
3397 u32 ver_rom, ver_patch, rver_rom;
3398 u16 rver_rom_low, rver_rom_high, rver_patch;
3399 char fwname[64];
3400 int err;
3401
3402 ver_rom = le32_to_cpu(ver->rom_version);
3403 ver_patch = le32_to_cpu(ver->patch_version);
3404
3405 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
3406
3407 err = request_firmware(&fw, fwname, &hdev->dev);
3408 if (err) {
3409 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
3410 fwname, err);
3411 return err;
3412 }
3413
3414 bt_dev_info(hdev, "using rampatch file: %s", fwname);
3415
3416 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
3417 rver_rom_low = le16_to_cpu(rver->rom_version_low);
3418 rver_patch = le16_to_cpu(rver->patch_version);
3419
3420 if (ver_rom & ~0xffffU) {
3421 rver_rom_high = le16_to_cpu(rver->rom_version_high);
3422 rver_rom = le32_to_cpu(rver_rom_high << 16 | rver_rom_low);
3423 } else {
3424 rver_rom = rver_rom_low;
3425 }
3426
3427 bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
3428 "firmware rome 0x%x build 0x%x",
3429 rver_rom, rver_patch, ver_rom, ver_patch);
3430
3431 if (rver_rom != ver_rom || rver_patch <= ver_patch) {
3432 bt_dev_err(hdev, "rampatch file version did not match with firmware");
3433 err = -EINVAL;
3434 goto done;
3435 }
3436
3437 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
3438
3439 done:
3440 release_firmware(fw);
3441
3442 return err;
3443 }
3444
btusb_setup_qca_load_nvm(struct hci_dev * hdev,struct qca_version * ver,const struct qca_device_info * info)3445 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
3446 struct qca_version *ver,
3447 const struct qca_device_info *info)
3448 {
3449 const struct firmware *fw;
3450 char fwname[64];
3451 int err;
3452
3453 if (((ver->flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) {
3454 /* if boardid equal 0, use default nvm without surfix */
3455 if (le16_to_cpu(ver->board_id) == 0x0) {
3456 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
3457 le32_to_cpu(ver->rom_version));
3458 } else {
3459 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x_%04x.bin",
3460 le32_to_cpu(ver->rom_version),
3461 le16_to_cpu(ver->board_id));
3462 }
3463 } else {
3464 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
3465 le32_to_cpu(ver->rom_version));
3466 }
3467
3468 err = request_firmware(&fw, fwname, &hdev->dev);
3469 if (err) {
3470 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
3471 fwname, err);
3472 return err;
3473 }
3474
3475 bt_dev_info(hdev, "using NVM file: %s", fwname);
3476
3477 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
3478
3479 release_firmware(fw);
3480
3481 return err;
3482 }
3483
3484 /* identify the ROM version and check whether patches are needed */
btusb_qca_need_patch(struct usb_device * udev)3485 static bool btusb_qca_need_patch(struct usb_device *udev)
3486 {
3487 struct qca_version ver;
3488
3489 if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3490 sizeof(ver)) < 0)
3491 return false;
3492 /* only low ROM versions need patches */
3493 return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
3494 }
3495
btusb_setup_qca(struct hci_dev * hdev)3496 static int btusb_setup_qca(struct hci_dev *hdev)
3497 {
3498 struct btusb_data *btdata = hci_get_drvdata(hdev);
3499 struct usb_device *udev = btdata->udev;
3500 const struct qca_device_info *info = NULL;
3501 struct qca_version ver;
3502 u32 ver_rom;
3503 u8 status;
3504 int i, err;
3505
3506 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3507 sizeof(ver));
3508 if (err < 0)
3509 return err;
3510
3511 ver_rom = le32_to_cpu(ver.rom_version);
3512
3513 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
3514 if (ver_rom == qca_devices_table[i].rom_version)
3515 info = &qca_devices_table[i];
3516 }
3517 if (!info) {
3518 /* If the rom_version is not matched in the qca_devices_table
3519 * and the high ROM version is not zero, we assume this chip no
3520 * need to load the rampatch and nvm.
3521 */
3522 if (ver_rom & ~0xffffU)
3523 return 0;
3524
3525 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
3526 return -ENODEV;
3527 }
3528
3529 err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
3530 sizeof(status));
3531 if (err < 0)
3532 return err;
3533
3534 if (!(status & QCA_PATCH_UPDATED)) {
3535 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3536 if (err < 0)
3537 return err;
3538 }
3539
3540 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3541 sizeof(ver));
3542 if (err < 0)
3543 return err;
3544
3545 if (!(status & QCA_SYSCFG_UPDATED)) {
3546 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3547 if (err < 0)
3548 return err;
3549 }
3550
3551 return 0;
3552 }
3553
__set_diag_interface(struct hci_dev * hdev)3554 static inline int __set_diag_interface(struct hci_dev *hdev)
3555 {
3556 struct btusb_data *data = hci_get_drvdata(hdev);
3557 struct usb_interface *intf = data->diag;
3558 int i;
3559
3560 if (!data->diag)
3561 return -ENODEV;
3562
3563 data->diag_tx_ep = NULL;
3564 data->diag_rx_ep = NULL;
3565
3566 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3567 struct usb_endpoint_descriptor *ep_desc;
3568
3569 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3570
3571 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3572 data->diag_tx_ep = ep_desc;
3573 continue;
3574 }
3575
3576 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3577 data->diag_rx_ep = ep_desc;
3578 continue;
3579 }
3580 }
3581
3582 if (!data->diag_tx_ep || !data->diag_rx_ep) {
3583 bt_dev_err(hdev, "invalid diagnostic descriptors");
3584 return -ENODEV;
3585 }
3586
3587 return 0;
3588 }
3589
alloc_diag_urb(struct hci_dev * hdev,bool enable)3590 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
3591 {
3592 struct btusb_data *data = hci_get_drvdata(hdev);
3593 struct sk_buff *skb;
3594 struct urb *urb;
3595 unsigned int pipe;
3596
3597 if (!data->diag_tx_ep)
3598 return ERR_PTR(-ENODEV);
3599
3600 urb = usb_alloc_urb(0, GFP_KERNEL);
3601 if (!urb)
3602 return ERR_PTR(-ENOMEM);
3603
3604 skb = bt_skb_alloc(2, GFP_KERNEL);
3605 if (!skb) {
3606 usb_free_urb(urb);
3607 return ERR_PTR(-ENOMEM);
3608 }
3609
3610 skb_put_u8(skb, 0xf0);
3611 skb_put_u8(skb, enable);
3612
3613 pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
3614
3615 usb_fill_bulk_urb(urb, data->udev, pipe,
3616 skb->data, skb->len, btusb_tx_complete, skb);
3617
3618 skb->dev = (void *)hdev;
3619
3620 return urb;
3621 }
3622
btusb_bcm_set_diag(struct hci_dev * hdev,bool enable)3623 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
3624 {
3625 struct btusb_data *data = hci_get_drvdata(hdev);
3626 struct urb *urb;
3627
3628 if (!data->diag)
3629 return -ENODEV;
3630
3631 if (!test_bit(HCI_RUNNING, &hdev->flags))
3632 return -ENETDOWN;
3633
3634 urb = alloc_diag_urb(hdev, enable);
3635 if (IS_ERR(urb))
3636 return PTR_ERR(urb);
3637
3638 return submit_or_queue_tx_urb(hdev, urb);
3639 }
3640
3641 #ifdef CONFIG_PM
btusb_oob_wake_handler(int irq,void * priv)3642 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
3643 {
3644 struct btusb_data *data = priv;
3645
3646 pm_wakeup_event(&data->udev->dev, 0);
3647 pm_system_wakeup();
3648
3649 /* Disable only if not already disabled (keep it balanced) */
3650 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3651 disable_irq_nosync(irq);
3652 disable_irq_wake(irq);
3653 }
3654 return IRQ_HANDLED;
3655 }
3656
3657 static const struct of_device_id btusb_match_table[] = {
3658 { .compatible = "usb1286,204e" },
3659 { .compatible = "usbcf3,e300" }, /* QCA6174A */
3660 { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
3661 { }
3662 };
3663 MODULE_DEVICE_TABLE(of, btusb_match_table);
3664
3665 /* Use an oob wakeup pin? */
btusb_config_oob_wake(struct hci_dev * hdev)3666 static int btusb_config_oob_wake(struct hci_dev *hdev)
3667 {
3668 struct btusb_data *data = hci_get_drvdata(hdev);
3669 struct device *dev = &data->udev->dev;
3670 int irq, ret;
3671
3672 clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3673
3674 if (!of_match_device(btusb_match_table, dev))
3675 return 0;
3676
3677 /* Move on if no IRQ specified */
3678 irq = of_irq_get_byname(dev->of_node, "wakeup");
3679 if (irq <= 0) {
3680 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
3681 return 0;
3682 }
3683
3684 irq_set_status_flags(irq, IRQ_NOAUTOEN);
3685 ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
3686 0, "OOB Wake-on-BT", data);
3687 if (ret) {
3688 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
3689 return ret;
3690 }
3691
3692 ret = device_init_wakeup(dev, true);
3693 if (ret) {
3694 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
3695 return ret;
3696 }
3697
3698 data->oob_wake_irq = irq;
3699 bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
3700 return 0;
3701 }
3702 #endif
3703
btusb_check_needs_reset_resume(struct usb_interface * intf)3704 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
3705 {
3706 if (dmi_check_system(btusb_needs_reset_resume_table))
3707 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3708 }
3709
btusb_prevent_wake(struct hci_dev * hdev)3710 static bool btusb_prevent_wake(struct hci_dev *hdev)
3711 {
3712 struct btusb_data *data = hci_get_drvdata(hdev);
3713
3714 return !device_may_wakeup(&data->udev->dev);
3715 }
3716
btusb_shutdown_qca(struct hci_dev * hdev)3717 static int btusb_shutdown_qca(struct hci_dev *hdev)
3718 {
3719 struct sk_buff *skb;
3720
3721 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
3722 if (IS_ERR(skb)) {
3723 bt_dev_err(hdev, "HCI reset during shutdown failed");
3724 return PTR_ERR(skb);
3725 }
3726 kfree_skb(skb);
3727
3728 return 0;
3729 }
3730
btusb_probe(struct usb_interface * intf,const struct usb_device_id * id)3731 static int btusb_probe(struct usb_interface *intf,
3732 const struct usb_device_id *id)
3733 {
3734 struct usb_endpoint_descriptor *ep_desc;
3735 struct gpio_desc *reset_gpio;
3736 struct btusb_data *data;
3737 struct hci_dev *hdev;
3738 unsigned ifnum_base;
3739 int i, err, priv_size;
3740
3741 BT_DBG("intf %p id %p", intf, id);
3742
3743 /* interface numbers are hardcoded in the spec */
3744 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
3745 if (!(id->driver_info & BTUSB_IFNUM_2))
3746 return -ENODEV;
3747 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
3748 return -ENODEV;
3749 }
3750
3751 ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
3752
3753 if (!id->driver_info) {
3754 const struct usb_device_id *match;
3755
3756 match = usb_match_id(intf, blacklist_table);
3757 if (match)
3758 id = match;
3759 }
3760
3761 if (id->driver_info == BTUSB_IGNORE)
3762 return -ENODEV;
3763
3764 if (id->driver_info & BTUSB_ATH3012) {
3765 struct usb_device *udev = interface_to_usbdev(intf);
3766
3767 /* Old firmware would otherwise let ath3k driver load
3768 * patch and sysconfig files
3769 */
3770 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
3771 !btusb_qca_need_patch(udev))
3772 return -ENODEV;
3773 }
3774
3775 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
3776 if (!data)
3777 return -ENOMEM;
3778
3779 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3780 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3781
3782 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
3783 data->intr_ep = ep_desc;
3784 continue;
3785 }
3786
3787 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3788 data->bulk_tx_ep = ep_desc;
3789 continue;
3790 }
3791
3792 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3793 data->bulk_rx_ep = ep_desc;
3794 continue;
3795 }
3796 }
3797
3798 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
3799 return -ENODEV;
3800
3801 if (id->driver_info & BTUSB_AMP) {
3802 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
3803 data->cmdreq = 0x2b;
3804 } else {
3805 data->cmdreq_type = USB_TYPE_CLASS;
3806 data->cmdreq = 0x00;
3807 }
3808
3809 data->udev = interface_to_usbdev(intf);
3810 data->intf = intf;
3811
3812 INIT_WORK(&data->work, btusb_work);
3813 INIT_WORK(&data->waker, btusb_waker);
3814 init_usb_anchor(&data->deferred);
3815 init_usb_anchor(&data->tx_anchor);
3816 spin_lock_init(&data->txlock);
3817
3818 init_usb_anchor(&data->intr_anchor);
3819 init_usb_anchor(&data->bulk_anchor);
3820 init_usb_anchor(&data->isoc_anchor);
3821 init_usb_anchor(&data->diag_anchor);
3822 init_usb_anchor(&data->ctrl_anchor);
3823 spin_lock_init(&data->rxlock);
3824
3825 priv_size = 0;
3826
3827 data->recv_event = hci_recv_frame;
3828 data->recv_bulk = btusb_recv_bulk;
3829
3830 if (id->driver_info & BTUSB_INTEL_COMBINED) {
3831 /* Allocate extra space for Intel device */
3832 priv_size += sizeof(struct btintel_data);
3833
3834 /* Override the rx handlers */
3835 data->recv_event = btusb_recv_event_intel;
3836 data->recv_bulk = btusb_recv_bulk_intel;
3837 }
3838
3839 data->recv_acl = hci_recv_frame;
3840
3841 hdev = hci_alloc_dev_priv(priv_size);
3842 if (!hdev)
3843 return -ENOMEM;
3844
3845 hdev->bus = HCI_USB;
3846 hci_set_drvdata(hdev, data);
3847
3848 if (id->driver_info & BTUSB_AMP)
3849 hdev->dev_type = HCI_AMP;
3850 else
3851 hdev->dev_type = HCI_PRIMARY;
3852
3853 data->hdev = hdev;
3854
3855 SET_HCIDEV_DEV(hdev, &intf->dev);
3856
3857 reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
3858 GPIOD_OUT_LOW);
3859 if (IS_ERR(reset_gpio)) {
3860 err = PTR_ERR(reset_gpio);
3861 goto out_free_dev;
3862 } else if (reset_gpio) {
3863 data->reset_gpio = reset_gpio;
3864 }
3865
3866 hdev->open = btusb_open;
3867 hdev->close = btusb_close;
3868 hdev->flush = btusb_flush;
3869 hdev->send = btusb_send_frame;
3870 hdev->notify = btusb_notify;
3871 hdev->prevent_wake = btusb_prevent_wake;
3872
3873 #ifdef CONFIG_PM
3874 err = btusb_config_oob_wake(hdev);
3875 if (err)
3876 goto out_free_dev;
3877
3878 /* Marvell devices may need a specific chip configuration */
3879 if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
3880 err = marvell_config_oob_wake(hdev);
3881 if (err)
3882 goto out_free_dev;
3883 }
3884 #endif
3885 if (id->driver_info & BTUSB_CW6622)
3886 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3887
3888 if (id->driver_info & BTUSB_BCM2045)
3889 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3890
3891 if (id->driver_info & BTUSB_BCM92035)
3892 hdev->setup = btusb_setup_bcm92035;
3893
3894 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
3895 (id->driver_info & BTUSB_BCM_PATCHRAM)) {
3896 hdev->manufacturer = 15;
3897 hdev->setup = btbcm_setup_patchram;
3898 hdev->set_diag = btusb_bcm_set_diag;
3899 hdev->set_bdaddr = btbcm_set_bdaddr;
3900
3901 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3902 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3903 }
3904
3905 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
3906 (id->driver_info & BTUSB_BCM_APPLE)) {
3907 hdev->manufacturer = 15;
3908 hdev->setup = btbcm_setup_apple;
3909 hdev->set_diag = btusb_bcm_set_diag;
3910
3911 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3912 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3913 }
3914
3915 /* Combined Intel Device setup to support multiple setup routine */
3916 if (id->driver_info & BTUSB_INTEL_COMBINED) {
3917 err = btintel_configure_setup(hdev);
3918 if (err)
3919 goto out_free_dev;
3920
3921 /* Transport specific configuration */
3922 hdev->send = btusb_send_frame_intel;
3923 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3924
3925 if (id->driver_info & BTUSB_INTEL_NO_WBS_SUPPORT)
3926 btintel_set_flag(hdev, INTEL_ROM_LEGACY_NO_WBS_SUPPORT);
3927
3928 if (id->driver_info & BTUSB_INTEL_BROKEN_INITIAL_NCMD)
3929 btintel_set_flag(hdev, INTEL_BROKEN_INITIAL_NCMD);
3930
3931 if (id->driver_info & BTUSB_INTEL_BROKEN_SHUTDOWN_LED)
3932 btintel_set_flag(hdev, INTEL_BROKEN_SHUTDOWN_LED);
3933 }
3934
3935 if (id->driver_info & BTUSB_MARVELL)
3936 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3937
3938 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) &&
3939 (id->driver_info & BTUSB_MEDIATEK)) {
3940 hdev->setup = btusb_mtk_setup;
3941 hdev->shutdown = btusb_mtk_shutdown;
3942 hdev->manufacturer = 70;
3943 hdev->cmd_timeout = btusb_mtk_cmd_timeout;
3944 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
3945 data->recv_acl = btusb_recv_acl_mtk;
3946 }
3947
3948 if (id->driver_info & BTUSB_SWAVE) {
3949 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3950 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3951 }
3952
3953 if (id->driver_info & BTUSB_INTEL_BOOT) {
3954 hdev->manufacturer = 2;
3955 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3956 }
3957
3958 if (id->driver_info & BTUSB_ATH3012) {
3959 data->setup_on_usb = btusb_setup_qca;
3960 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3961 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3962 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3963 }
3964
3965 if (id->driver_info & BTUSB_QCA_ROME) {
3966 data->setup_on_usb = btusb_setup_qca;
3967 hdev->shutdown = btusb_shutdown_qca;
3968 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3969 hdev->cmd_timeout = btusb_qca_cmd_timeout;
3970 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3971 btusb_check_needs_reset_resume(intf);
3972 }
3973
3974 if (id->driver_info & BTUSB_QCA_WCN6855) {
3975 data->setup_on_usb = btusb_setup_qca;
3976 hdev->shutdown = btusb_shutdown_qca;
3977 hdev->set_bdaddr = btusb_set_bdaddr_wcn6855;
3978 hdev->cmd_timeout = btusb_qca_cmd_timeout;
3979 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3980 hci_set_msft_opcode(hdev, 0xFD70);
3981 }
3982
3983 if (id->driver_info & BTUSB_AMP) {
3984 /* AMP controllers do not support SCO packets */
3985 data->isoc = NULL;
3986 } else {
3987 /* Interface orders are hardcoded in the specification */
3988 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
3989 data->isoc_ifnum = ifnum_base + 1;
3990 }
3991
3992 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) &&
3993 (id->driver_info & BTUSB_REALTEK)) {
3994 hdev->setup = btrtl_setup_realtek;
3995 hdev->shutdown = btrtl_shutdown_realtek;
3996 hdev->cmd_timeout = btusb_rtl_cmd_timeout;
3997
3998 /* Realtek devices need to set remote wakeup on auto-suspend */
3999 set_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags);
4000 set_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags);
4001 }
4002
4003 if (!reset)
4004 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4005
4006 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
4007 if (!disable_scofix)
4008 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
4009 }
4010
4011 if (id->driver_info & BTUSB_BROKEN_ISOC)
4012 data->isoc = NULL;
4013
4014 if (id->driver_info & BTUSB_WIDEBAND_SPEECH)
4015 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
4016
4017 if (id->driver_info & BTUSB_VALID_LE_STATES)
4018 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
4019
4020 if (id->driver_info & BTUSB_DIGIANSWER) {
4021 data->cmdreq_type = USB_TYPE_VENDOR;
4022 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4023 }
4024
4025 if (id->driver_info & BTUSB_CSR) {
4026 struct usb_device *udev = data->udev;
4027 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
4028
4029 /* Old firmware would otherwise execute USB reset */
4030 if (bcdDevice < 0x117)
4031 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4032
4033 /* This must be set first in case we disable it for fakes */
4034 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4035
4036 /* Fake CSR devices with broken commands */
4037 if (le16_to_cpu(udev->descriptor.idVendor) == 0x0a12 &&
4038 le16_to_cpu(udev->descriptor.idProduct) == 0x0001)
4039 hdev->setup = btusb_setup_csr;
4040 }
4041
4042 if (id->driver_info & BTUSB_SNIFFER) {
4043 struct usb_device *udev = data->udev;
4044
4045 /* New sniffer firmware has crippled HCI interface */
4046 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
4047 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4048 }
4049
4050 if (id->driver_info & BTUSB_INTEL_BOOT) {
4051 /* A bug in the bootloader causes that interrupt interface is
4052 * only enabled after receiving SetInterface(0, AltSetting=0).
4053 */
4054 err = usb_set_interface(data->udev, 0, 0);
4055 if (err < 0) {
4056 BT_ERR("failed to set interface 0, alt 0 %d", err);
4057 goto out_free_dev;
4058 }
4059 }
4060
4061 if (data->isoc) {
4062 err = usb_driver_claim_interface(&btusb_driver,
4063 data->isoc, data);
4064 if (err < 0)
4065 goto out_free_dev;
4066 }
4067
4068 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) {
4069 if (!usb_driver_claim_interface(&btusb_driver,
4070 data->diag, data))
4071 __set_diag_interface(hdev);
4072 else
4073 data->diag = NULL;
4074 }
4075
4076 if (enable_autosuspend)
4077 usb_enable_autosuspend(data->udev);
4078
4079 err = hci_register_dev(hdev);
4080 if (err < 0)
4081 goto out_free_dev;
4082
4083 usb_set_intfdata(intf, data);
4084
4085 return 0;
4086
4087 out_free_dev:
4088 if (data->reset_gpio)
4089 gpiod_put(data->reset_gpio);
4090 hci_free_dev(hdev);
4091 return err;
4092 }
4093
btusb_disconnect(struct usb_interface * intf)4094 static void btusb_disconnect(struct usb_interface *intf)
4095 {
4096 struct btusb_data *data = usb_get_intfdata(intf);
4097 struct hci_dev *hdev;
4098
4099 BT_DBG("intf %p", intf);
4100
4101 if (!data)
4102 return;
4103
4104 hdev = data->hdev;
4105 usb_set_intfdata(data->intf, NULL);
4106
4107 if (data->isoc)
4108 usb_set_intfdata(data->isoc, NULL);
4109
4110 if (data->diag)
4111 usb_set_intfdata(data->diag, NULL);
4112
4113 hci_unregister_dev(hdev);
4114
4115 if (intf == data->intf) {
4116 if (data->isoc)
4117 usb_driver_release_interface(&btusb_driver, data->isoc);
4118 if (data->diag)
4119 usb_driver_release_interface(&btusb_driver, data->diag);
4120 } else if (intf == data->isoc) {
4121 if (data->diag)
4122 usb_driver_release_interface(&btusb_driver, data->diag);
4123 usb_driver_release_interface(&btusb_driver, data->intf);
4124 } else if (intf == data->diag) {
4125 usb_driver_release_interface(&btusb_driver, data->intf);
4126 if (data->isoc)
4127 usb_driver_release_interface(&btusb_driver, data->isoc);
4128 }
4129
4130 if (data->oob_wake_irq)
4131 device_init_wakeup(&data->udev->dev, false);
4132
4133 if (data->reset_gpio)
4134 gpiod_put(data->reset_gpio);
4135
4136 hci_free_dev(hdev);
4137 }
4138
4139 #ifdef CONFIG_PM
btusb_suspend(struct usb_interface * intf,pm_message_t message)4140 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
4141 {
4142 struct btusb_data *data = usb_get_intfdata(intf);
4143
4144 BT_DBG("intf %p", intf);
4145
4146 if (data->suspend_count++)
4147 return 0;
4148
4149 spin_lock_irq(&data->txlock);
4150 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
4151 set_bit(BTUSB_SUSPENDING, &data->flags);
4152 spin_unlock_irq(&data->txlock);
4153 } else {
4154 spin_unlock_irq(&data->txlock);
4155 data->suspend_count--;
4156 return -EBUSY;
4157 }
4158
4159 cancel_work_sync(&data->work);
4160
4161 btusb_stop_traffic(data);
4162 usb_kill_anchored_urbs(&data->tx_anchor);
4163
4164 if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
4165 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4166 enable_irq_wake(data->oob_wake_irq);
4167 enable_irq(data->oob_wake_irq);
4168 }
4169
4170 /* For global suspend, Realtek devices lose the loaded fw
4171 * in them. But for autosuspend, firmware should remain.
4172 * Actually, it depends on whether the usb host sends
4173 * set feature (enable wakeup) or not.
4174 */
4175 if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags)) {
4176 if (PMSG_IS_AUTO(message) &&
4177 device_can_wakeup(&data->udev->dev))
4178 data->udev->do_remote_wakeup = 1;
4179 else if (!PMSG_IS_AUTO(message) &&
4180 !device_may_wakeup(&data->udev->dev)) {
4181 data->udev->do_remote_wakeup = 0;
4182 data->udev->reset_resume = 1;
4183 }
4184 }
4185
4186 return 0;
4187 }
4188
play_deferred(struct btusb_data * data)4189 static void play_deferred(struct btusb_data *data)
4190 {
4191 struct urb *urb;
4192 int err;
4193
4194 while ((urb = usb_get_from_anchor(&data->deferred))) {
4195 usb_anchor_urb(urb, &data->tx_anchor);
4196
4197 err = usb_submit_urb(urb, GFP_ATOMIC);
4198 if (err < 0) {
4199 if (err != -EPERM && err != -ENODEV)
4200 BT_ERR("%s urb %p submission failed (%d)",
4201 data->hdev->name, urb, -err);
4202 kfree(urb->setup_packet);
4203 usb_unanchor_urb(urb);
4204 usb_free_urb(urb);
4205 break;
4206 }
4207
4208 data->tx_in_flight++;
4209 usb_free_urb(urb);
4210 }
4211
4212 /* Cleanup the rest deferred urbs. */
4213 while ((urb = usb_get_from_anchor(&data->deferred))) {
4214 kfree(urb->setup_packet);
4215 usb_free_urb(urb);
4216 }
4217 }
4218
btusb_resume(struct usb_interface * intf)4219 static int btusb_resume(struct usb_interface *intf)
4220 {
4221 struct btusb_data *data = usb_get_intfdata(intf);
4222 struct hci_dev *hdev = data->hdev;
4223 int err = 0;
4224
4225 BT_DBG("intf %p", intf);
4226
4227 if (--data->suspend_count)
4228 return 0;
4229
4230 /* Disable only if not already disabled (keep it balanced) */
4231 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4232 disable_irq(data->oob_wake_irq);
4233 disable_irq_wake(data->oob_wake_irq);
4234 }
4235
4236 if (!test_bit(HCI_RUNNING, &hdev->flags))
4237 goto done;
4238
4239 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4240 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4241 if (err < 0) {
4242 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
4243 goto failed;
4244 }
4245 }
4246
4247 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
4248 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
4249 if (err < 0) {
4250 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
4251 goto failed;
4252 }
4253
4254 btusb_submit_bulk_urb(hdev, GFP_NOIO);
4255 }
4256
4257 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
4258 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
4259 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
4260 else
4261 btusb_submit_isoc_urb(hdev, GFP_NOIO);
4262 }
4263
4264 spin_lock_irq(&data->txlock);
4265 play_deferred(data);
4266 clear_bit(BTUSB_SUSPENDING, &data->flags);
4267 spin_unlock_irq(&data->txlock);
4268 schedule_work(&data->work);
4269
4270 return 0;
4271
4272 failed:
4273 usb_scuttle_anchored_urbs(&data->deferred);
4274 done:
4275 spin_lock_irq(&data->txlock);
4276 clear_bit(BTUSB_SUSPENDING, &data->flags);
4277 spin_unlock_irq(&data->txlock);
4278
4279 return err;
4280 }
4281 #endif
4282
4283 static struct usb_driver btusb_driver = {
4284 .name = "btusb",
4285 .probe = btusb_probe,
4286 .disconnect = btusb_disconnect,
4287 #ifdef CONFIG_PM
4288 .suspend = btusb_suspend,
4289 .resume = btusb_resume,
4290 #endif
4291 .id_table = btusb_table,
4292 .supports_autosuspend = 1,
4293 .disable_hub_initiated_lpm = 1,
4294 };
4295
4296 module_usb_driver(btusb_driver);
4297
4298 module_param(disable_scofix, bool, 0644);
4299 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
4300
4301 module_param(force_scofix, bool, 0644);
4302 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
4303
4304 module_param(enable_autosuspend, bool, 0644);
4305 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
4306
4307 module_param(reset, bool, 0644);
4308 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
4309
4310 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
4311 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
4312 MODULE_VERSION(VERSION);
4313 MODULE_LICENSE("GPL");
4314