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dm writecache: add cond_resched to loop in persistent_memory_claim()
[linux/fpc-iii.git] / drivers / bluetooth / btusb.c
blob3d9313c746f39d214a8da0f0228aa58c586d1bc5
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 *
4 * Generic Bluetooth USB driver
5 *
6 * Copyright (C) 2005-2008 Marcel Holtmann <marcel@holtmann.org>
7 */
8
9 #include <linux/dmi.h>
10 #include <linux/module.h>
11 #include <linux/usb.h>
12 #include <linux/usb/quirks.h>
13 #include <linux/firmware.h>
14 #include <linux/iopoll.h>
15 #include <linux/of_device.h>
16 #include <linux/of_irq.h>
17 #include <linux/suspend.h>
18 #include <linux/gpio/consumer.h>
19 #include <asm/unaligned.h>
20
21 #include <net/bluetooth/bluetooth.h>
22 #include <net/bluetooth/hci_core.h>
23
24 #include "btintel.h"
25 #include "btbcm.h"
26 #include "btrtl.h"
27
28 #define VERSION "0.8"
29
30 static bool disable_scofix;
31 static bool force_scofix;
32 static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND);
33
34 static bool reset = true;
35
36 static struct usb_driver btusb_driver;
37
38 #define BTUSB_IGNORE 0x01
39 #define BTUSB_DIGIANSWER 0x02
40 #define BTUSB_CSR 0x04
41 #define BTUSB_SNIFFER 0x08
42 #define BTUSB_BCM92035 0x10
43 #define BTUSB_BROKEN_ISOC 0x20
44 #define BTUSB_WRONG_SCO_MTU 0x40
45 #define BTUSB_ATH3012 0x80
46 #define BTUSB_INTEL 0x100
47 #define BTUSB_INTEL_BOOT 0x200
48 #define BTUSB_BCM_PATCHRAM 0x400
49 #define BTUSB_MARVELL 0x800
50 #define BTUSB_SWAVE 0x1000
51 #define BTUSB_INTEL_NEW 0x2000
52 #define BTUSB_AMP 0x4000
53 #define BTUSB_QCA_ROME 0x8000
54 #define BTUSB_BCM_APPLE 0x10000
55 #define BTUSB_REALTEK 0x20000
56 #define BTUSB_BCM2045 0x40000
57 #define BTUSB_IFNUM_2 0x80000
58 #define BTUSB_CW6622 0x100000
59 #define BTUSB_MEDIATEK 0x200000
60 #define BTUSB_WIDEBAND_SPEECH 0x400000
61 #define BTUSB_VALID_LE_STATES 0x800000
62
63 static const struct usb_device_id btusb_table[] = {
64 /* Generic Bluetooth USB device */
65 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
66
67 /* Generic Bluetooth AMP device */
68 { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
69
70 /* Generic Bluetooth USB interface */
71 { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
72
73 /* Apple-specific (Broadcom) devices */
74 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
75 .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
76
77 /* MediaTek MT76x0E */
78 { USB_DEVICE(0x0e8d, 0x763f) },
79
80 /* Broadcom SoftSailing reporting vendor specific */
81 { USB_DEVICE(0x0a5c, 0x21e1) },
82
83 /* Apple MacBookPro 7,1 */
84 { USB_DEVICE(0x05ac, 0x8213) },
85
86 /* Apple iMac11,1 */
87 { USB_DEVICE(0x05ac, 0x8215) },
88
89 /* Apple MacBookPro6,2 */
90 { USB_DEVICE(0x05ac, 0x8218) },
91
92 /* Apple MacBookAir3,1, MacBookAir3,2 */
93 { USB_DEVICE(0x05ac, 0x821b) },
94
95 /* Apple MacBookAir4,1 */
96 { USB_DEVICE(0x05ac, 0x821f) },
97
98 /* Apple MacBookPro8,2 */
99 { USB_DEVICE(0x05ac, 0x821a) },
100
101 /* Apple MacMini5,1 */
102 { USB_DEVICE(0x05ac, 0x8281) },
103
104 /* AVM BlueFRITZ! USB v2.0 */
105 { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
106
107 /* Bluetooth Ultraport Module from IBM */
108 { USB_DEVICE(0x04bf, 0x030a) },
109
110 /* ALPS Modules with non-standard id */
111 { USB_DEVICE(0x044e, 0x3001) },
112 { USB_DEVICE(0x044e, 0x3002) },
113
114 /* Ericsson with non-standard id */
115 { USB_DEVICE(0x0bdb, 0x1002) },
116
117 /* Canyon CN-BTU1 with HID interfaces */
118 { USB_DEVICE(0x0c10, 0x0000) },
119
120 /* Broadcom BCM20702A0 */
121 { USB_DEVICE(0x413c, 0x8197) },
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 { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
259 { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME },
260 { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME },
261 { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
262 { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME },
263 { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
264 { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME },
265 { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME },
266 { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME },
267 { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME },
268 { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME },
269 { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME },
270 { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME },
271 { USB_DEVICE(0x04ca, 0x3021), .driver_info = BTUSB_QCA_ROME },
272 { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME },
273 { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME },
274 { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME },
275
276 /* Broadcom BCM2035 */
277 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
278 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
279 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
280
281 /* Broadcom BCM2045 */
282 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
283 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
284
285 /* IBM/Lenovo ThinkPad with Broadcom chip */
286 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
287 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
288
289 /* HP laptop with Broadcom chip */
290 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
291
292 /* Dell laptop with Broadcom chip */
293 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
294
295 /* Dell Wireless 370 and 410 devices */
296 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
297 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
298
299 /* Belkin F8T012 and F8T013 devices */
300 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
301 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
302
303 /* Asus WL-BTD202 device */
304 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
305
306 /* Kensington Bluetooth USB adapter */
307 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
308
309 /* RTX Telecom based adapters with buggy SCO support */
310 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
311 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
312
313 /* CONWISE Technology based adapters with buggy SCO support */
314 { USB_DEVICE(0x0e5e, 0x6622),
315 .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
316
317 /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
318 { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
319
320 /* Digianswer devices */
321 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
322 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
323
324 /* CSR BlueCore Bluetooth Sniffer */
325 { USB_DEVICE(0x0a12, 0x0002),
326 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
327
328 /* Frontline ComProbe Bluetooth Sniffer */
329 { USB_DEVICE(0x16d3, 0x0002),
330 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
331
332 /* Marvell Bluetooth devices */
333 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
334 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
335 { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
336
337 /* Intel Bluetooth devices */
338 { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW |
339 BTUSB_WIDEBAND_SPEECH },
340 { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_NEW |
341 BTUSB_WIDEBAND_SPEECH },
342 { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_NEW |
343 BTUSB_WIDEBAND_SPEECH },
344 { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
345 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
346 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
347 { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW |
348 BTUSB_WIDEBAND_SPEECH },
349 { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL |
350 BTUSB_WIDEBAND_SPEECH },
351 { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW |
352 BTUSB_WIDEBAND_SPEECH },
353
354 /* Other Intel Bluetooth devices */
355 { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
356 .driver_info = BTUSB_IGNORE },
357
358 /* Realtek Bluetooth devices */
359 { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
360 .driver_info = BTUSB_REALTEK },
361
362 /* MediaTek Bluetooth devices */
363 { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01),
364 .driver_info = BTUSB_MEDIATEK },
365
366 /* Additional Realtek 8723AE Bluetooth devices */
367 { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
368 { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
369
370 /* Additional Realtek 8723BE Bluetooth devices */
371 { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
372 { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
373 { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
374 { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
375 { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
376 { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
377
378 /* Additional Realtek 8723BU Bluetooth devices */
379 { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
380
381 /* Additional Realtek 8723DE Bluetooth devices */
382 { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
383 { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
384
385 /* Additional Realtek 8821AE Bluetooth devices */
386 { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
387 { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
388 { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
389 { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
390 { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
391
392 /* Additional Realtek 8822BE Bluetooth devices */
393 { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
394 { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
395
396 /* Additional Realtek 8822CE Bluetooth devices */
397 { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK },
398 { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK },
399
400 /* Silicon Wave based devices */
401 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
402
403 { } /* Terminating entry */
404 };
405
406 /* The Bluetooth USB module build into some devices needs to be reset on resume,
407 * this is a problem with the platform (likely shutting off all power) not with
408 * the module itself. So we use a DMI list to match known broken platforms.
409 */
410 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
411 {
412 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
413 .matches = {
414 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
415 DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
416 },
417 },
418 {
419 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
420 .matches = {
421 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
422 DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
423 },
424 },
425 {
426 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
427 .matches = {
428 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
429 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
430 },
431 },
432 {}
433 };
434
435 #define BTUSB_MAX_ISOC_FRAMES 10
436
437 #define BTUSB_INTR_RUNNING 0
438 #define BTUSB_BULK_RUNNING 1
439 #define BTUSB_ISOC_RUNNING 2
440 #define BTUSB_SUSPENDING 3
441 #define BTUSB_DID_ISO_RESUME 4
442 #define BTUSB_BOOTLOADER 5
443 #define BTUSB_DOWNLOADING 6
444 #define BTUSB_FIRMWARE_LOADED 7
445 #define BTUSB_FIRMWARE_FAILED 8
446 #define BTUSB_BOOTING 9
447 #define BTUSB_DIAG_RUNNING 10
448 #define BTUSB_OOB_WAKE_ENABLED 11
449 #define BTUSB_HW_RESET_ACTIVE 12
450 #define BTUSB_TX_WAIT_VND_EVT 13
451 #define BTUSB_WAKEUP_DISABLE 14
452
453 struct btusb_data {
454 struct hci_dev *hdev;
455 struct usb_device *udev;
456 struct usb_interface *intf;
457 struct usb_interface *isoc;
458 struct usb_interface *diag;
459 unsigned isoc_ifnum;
460
461 unsigned long flags;
462
463 struct work_struct work;
464 struct work_struct waker;
465
466 struct usb_anchor deferred;
467 struct usb_anchor tx_anchor;
468 int tx_in_flight;
469 spinlock_t txlock;
470
471 struct usb_anchor intr_anchor;
472 struct usb_anchor bulk_anchor;
473 struct usb_anchor isoc_anchor;
474 struct usb_anchor diag_anchor;
475 struct usb_anchor ctrl_anchor;
476 spinlock_t rxlock;
477
478 struct sk_buff *evt_skb;
479 struct sk_buff *acl_skb;
480 struct sk_buff *sco_skb;
481
482 struct usb_endpoint_descriptor *intr_ep;
483 struct usb_endpoint_descriptor *bulk_tx_ep;
484 struct usb_endpoint_descriptor *bulk_rx_ep;
485 struct usb_endpoint_descriptor *isoc_tx_ep;
486 struct usb_endpoint_descriptor *isoc_rx_ep;
487 struct usb_endpoint_descriptor *diag_tx_ep;
488 struct usb_endpoint_descriptor *diag_rx_ep;
489
490 struct gpio_desc *reset_gpio;
491
492 __u8 cmdreq_type;
493 __u8 cmdreq;
494
495 unsigned int sco_num;
496 int isoc_altsetting;
497 int suspend_count;
498
499 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
500 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
501
502 int (*setup_on_usb)(struct hci_dev *hdev);
503
504 int oob_wake_irq; /* irq for out-of-band wake-on-bt */
505 unsigned cmd_timeout_cnt;
506 };
507
508
509 static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
510 {
511 struct btusb_data *data = hci_get_drvdata(hdev);
512 struct gpio_desc *reset_gpio = data->reset_gpio;
513
514 if (++data->cmd_timeout_cnt < 5)
515 return;
516
517 if (!reset_gpio) {
518 bt_dev_err(hdev, "No way to reset. Ignoring and continuing");
519 return;
520 }
521
522 /*
523 * Toggle the hard reset line if the platform provides one. The reset
524 * is going to yank the device off the USB and then replug. So doing
525 * once is enough. The cleanup is handled correctly on the way out
526 * (standard USB disconnect), and the new device is detected cleanly
527 * and bound to the driver again like it should be.
528 */
529 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
530 bt_dev_err(hdev, "last reset failed? Not resetting again");
531 return;
532 }
533
534 bt_dev_err(hdev, "Initiating HW reset via gpio");
535 gpiod_set_value_cansleep(reset_gpio, 1);
536 msleep(100);
537 gpiod_set_value_cansleep(reset_gpio, 0);
538 }
539
540 static void btusb_rtl_cmd_timeout(struct hci_dev *hdev)
541 {
542 struct btusb_data *data = hci_get_drvdata(hdev);
543 struct gpio_desc *reset_gpio = data->reset_gpio;
544
545 if (++data->cmd_timeout_cnt < 5)
546 return;
547
548 if (!reset_gpio) {
549 bt_dev_err(hdev, "No gpio to reset Realtek device, ignoring");
550 return;
551 }
552
553 /* Toggle the hard reset line. The Realtek device is going to
554 * yank itself off the USB and then replug. The cleanup is handled
555 * correctly on the way out (standard USB disconnect), and the new
556 * device is detected cleanly and bound to the driver again like
557 * it should be.
558 */
559 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
560 bt_dev_err(hdev, "last reset failed? Not resetting again");
561 return;
562 }
563
564 bt_dev_err(hdev, "Reset Realtek device via gpio");
565 gpiod_set_value_cansleep(reset_gpio, 1);
566 msleep(200);
567 gpiod_set_value_cansleep(reset_gpio, 0);
568 }
569
570 static inline void btusb_free_frags(struct btusb_data *data)
571 {
572 unsigned long flags;
573
574 spin_lock_irqsave(&data->rxlock, flags);
575
576 kfree_skb(data->evt_skb);
577 data->evt_skb = NULL;
578
579 kfree_skb(data->acl_skb);
580 data->acl_skb = NULL;
581
582 kfree_skb(data->sco_skb);
583 data->sco_skb = NULL;
584
585 spin_unlock_irqrestore(&data->rxlock, flags);
586 }
587
588 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
589 {
590 struct sk_buff *skb;
591 unsigned long flags;
592 int err = 0;
593
594 spin_lock_irqsave(&data->rxlock, flags);
595 skb = data->evt_skb;
596
597 while (count) {
598 int len;
599
600 if (!skb) {
601 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
602 if (!skb) {
603 err = -ENOMEM;
604 break;
605 }
606
607 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
608 hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
609 }
610
611 len = min_t(uint, hci_skb_expect(skb), count);
612 skb_put_data(skb, buffer, len);
613
614 count -= len;
615 buffer += len;
616 hci_skb_expect(skb) -= len;
617
618 if (skb->len == HCI_EVENT_HDR_SIZE) {
619 /* Complete event header */
620 hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
621
622 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
623 kfree_skb(skb);
624 skb = NULL;
625
626 err = -EILSEQ;
627 break;
628 }
629 }
630
631 if (!hci_skb_expect(skb)) {
632 /* Complete frame */
633 data->recv_event(data->hdev, skb);
634 skb = NULL;
635 }
636 }
637
638 data->evt_skb = skb;
639 spin_unlock_irqrestore(&data->rxlock, flags);
640
641 return err;
642 }
643
644 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
645 {
646 struct sk_buff *skb;
647 unsigned long flags;
648 int err = 0;
649
650 spin_lock_irqsave(&data->rxlock, flags);
651 skb = data->acl_skb;
652
653 while (count) {
654 int len;
655
656 if (!skb) {
657 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
658 if (!skb) {
659 err = -ENOMEM;
660 break;
661 }
662
663 hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
664 hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
665 }
666
667 len = min_t(uint, hci_skb_expect(skb), count);
668 skb_put_data(skb, buffer, len);
669
670 count -= len;
671 buffer += len;
672 hci_skb_expect(skb) -= len;
673
674 if (skb->len == HCI_ACL_HDR_SIZE) {
675 __le16 dlen = hci_acl_hdr(skb)->dlen;
676
677 /* Complete ACL header */
678 hci_skb_expect(skb) = __le16_to_cpu(dlen);
679
680 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
681 kfree_skb(skb);
682 skb = NULL;
683
684 err = -EILSEQ;
685 break;
686 }
687 }
688
689 if (!hci_skb_expect(skb)) {
690 /* Complete frame */
691 hci_recv_frame(data->hdev, skb);
692 skb = NULL;
693 }
694 }
695
696 data->acl_skb = skb;
697 spin_unlock_irqrestore(&data->rxlock, flags);
698
699 return err;
700 }
701
702 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
703 {
704 struct sk_buff *skb;
705 unsigned long flags;
706 int err = 0;
707
708 spin_lock_irqsave(&data->rxlock, flags);
709 skb = data->sco_skb;
710
711 while (count) {
712 int len;
713
714 if (!skb) {
715 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
716 if (!skb) {
717 err = -ENOMEM;
718 break;
719 }
720
721 hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
722 hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
723 }
724
725 len = min_t(uint, hci_skb_expect(skb), count);
726 skb_put_data(skb, buffer, len);
727
728 count -= len;
729 buffer += len;
730 hci_skb_expect(skb) -= len;
731
732 if (skb->len == HCI_SCO_HDR_SIZE) {
733 /* Complete SCO header */
734 hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
735
736 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
737 kfree_skb(skb);
738 skb = NULL;
739
740 err = -EILSEQ;
741 break;
742 }
743 }
744
745 if (!hci_skb_expect(skb)) {
746 /* Complete frame */
747 hci_recv_frame(data->hdev, skb);
748 skb = NULL;
749 }
750 }
751
752 data->sco_skb = skb;
753 spin_unlock_irqrestore(&data->rxlock, flags);
754
755 return err;
756 }
757
758 static void btusb_intr_complete(struct urb *urb)
759 {
760 struct hci_dev *hdev = urb->context;
761 struct btusb_data *data = hci_get_drvdata(hdev);
762 int err;
763
764 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
765 urb->actual_length);
766
767 if (!test_bit(HCI_RUNNING, &hdev->flags))
768 return;
769
770 if (urb->status == 0) {
771 hdev->stat.byte_rx += urb->actual_length;
772
773 if (btusb_recv_intr(data, urb->transfer_buffer,
774 urb->actual_length) < 0) {
775 bt_dev_err(hdev, "corrupted event packet");
776 hdev->stat.err_rx++;
777 }
778 } else if (urb->status == -ENOENT) {
779 /* Avoid suspend failed when usb_kill_urb */
780 return;
781 }
782
783 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
784 return;
785
786 usb_mark_last_busy(data->udev);
787 usb_anchor_urb(urb, &data->intr_anchor);
788
789 err = usb_submit_urb(urb, GFP_ATOMIC);
790 if (err < 0) {
791 /* -EPERM: urb is being killed;
792 * -ENODEV: device got disconnected
793 */
794 if (err != -EPERM && err != -ENODEV)
795 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
796 urb, -err);
797 usb_unanchor_urb(urb);
798 }
799 }
800
801 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
802 {
803 struct btusb_data *data = hci_get_drvdata(hdev);
804 struct urb *urb;
805 unsigned char *buf;
806 unsigned int pipe;
807 int err, size;
808
809 BT_DBG("%s", hdev->name);
810
811 if (!data->intr_ep)
812 return -ENODEV;
813
814 urb = usb_alloc_urb(0, mem_flags);
815 if (!urb)
816 return -ENOMEM;
817
818 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
819
820 buf = kmalloc(size, mem_flags);
821 if (!buf) {
822 usb_free_urb(urb);
823 return -ENOMEM;
824 }
825
826 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
827
828 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
829 btusb_intr_complete, hdev, data->intr_ep->bInterval);
830
831 urb->transfer_flags |= URB_FREE_BUFFER;
832
833 usb_anchor_urb(urb, &data->intr_anchor);
834
835 err = usb_submit_urb(urb, mem_flags);
836 if (err < 0) {
837 if (err != -EPERM && err != -ENODEV)
838 bt_dev_err(hdev, "urb %p submission failed (%d)",
839 urb, -err);
840 usb_unanchor_urb(urb);
841 }
842
843 usb_free_urb(urb);
844
845 return err;
846 }
847
848 static void btusb_bulk_complete(struct urb *urb)
849 {
850 struct hci_dev *hdev = urb->context;
851 struct btusb_data *data = hci_get_drvdata(hdev);
852 int err;
853
854 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
855 urb->actual_length);
856
857 if (!test_bit(HCI_RUNNING, &hdev->flags))
858 return;
859
860 if (urb->status == 0) {
861 hdev->stat.byte_rx += urb->actual_length;
862
863 if (data->recv_bulk(data, urb->transfer_buffer,
864 urb->actual_length) < 0) {
865 bt_dev_err(hdev, "corrupted ACL packet");
866 hdev->stat.err_rx++;
867 }
868 } else if (urb->status == -ENOENT) {
869 /* Avoid suspend failed when usb_kill_urb */
870 return;
871 }
872
873 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
874 return;
875
876 usb_anchor_urb(urb, &data->bulk_anchor);
877 usb_mark_last_busy(data->udev);
878
879 err = usb_submit_urb(urb, GFP_ATOMIC);
880 if (err < 0) {
881 /* -EPERM: urb is being killed;
882 * -ENODEV: device got disconnected
883 */
884 if (err != -EPERM && err != -ENODEV)
885 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
886 urb, -err);
887 usb_unanchor_urb(urb);
888 }
889 }
890
891 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
892 {
893 struct btusb_data *data = hci_get_drvdata(hdev);
894 struct urb *urb;
895 unsigned char *buf;
896 unsigned int pipe;
897 int err, size = HCI_MAX_FRAME_SIZE;
898
899 BT_DBG("%s", hdev->name);
900
901 if (!data->bulk_rx_ep)
902 return -ENODEV;
903
904 urb = usb_alloc_urb(0, mem_flags);
905 if (!urb)
906 return -ENOMEM;
907
908 buf = kmalloc(size, mem_flags);
909 if (!buf) {
910 usb_free_urb(urb);
911 return -ENOMEM;
912 }
913
914 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
915
916 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
917 btusb_bulk_complete, hdev);
918
919 urb->transfer_flags |= URB_FREE_BUFFER;
920
921 usb_mark_last_busy(data->udev);
922 usb_anchor_urb(urb, &data->bulk_anchor);
923
924 err = usb_submit_urb(urb, mem_flags);
925 if (err < 0) {
926 if (err != -EPERM && err != -ENODEV)
927 bt_dev_err(hdev, "urb %p submission failed (%d)",
928 urb, -err);
929 usb_unanchor_urb(urb);
930 }
931
932 usb_free_urb(urb);
933
934 return err;
935 }
936
937 static void btusb_isoc_complete(struct urb *urb)
938 {
939 struct hci_dev *hdev = urb->context;
940 struct btusb_data *data = hci_get_drvdata(hdev);
941 int i, err;
942
943 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
944 urb->actual_length);
945
946 if (!test_bit(HCI_RUNNING, &hdev->flags))
947 return;
948
949 if (urb->status == 0) {
950 for (i = 0; i < urb->number_of_packets; i++) {
951 unsigned int offset = urb->iso_frame_desc[i].offset;
952 unsigned int length = urb->iso_frame_desc[i].actual_length;
953
954 if (urb->iso_frame_desc[i].status)
955 continue;
956
957 hdev->stat.byte_rx += length;
958
959 if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
960 length) < 0) {
961 bt_dev_err(hdev, "corrupted SCO packet");
962 hdev->stat.err_rx++;
963 }
964 }
965 } else if (urb->status == -ENOENT) {
966 /* Avoid suspend failed when usb_kill_urb */
967 return;
968 }
969
970 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
971 return;
972
973 usb_anchor_urb(urb, &data->isoc_anchor);
974
975 err = usb_submit_urb(urb, GFP_ATOMIC);
976 if (err < 0) {
977 /* -EPERM: urb is being killed;
978 * -ENODEV: device got disconnected
979 */
980 if (err != -EPERM && err != -ENODEV)
981 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
982 urb, -err);
983 usb_unanchor_urb(urb);
984 }
985 }
986
987 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
988 {
989 int i, offset = 0;
990
991 BT_DBG("len %d mtu %d", len, mtu);
992
993 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
994 i++, offset += mtu, len -= mtu) {
995 urb->iso_frame_desc[i].offset = offset;
996 urb->iso_frame_desc[i].length = mtu;
997 }
998
999 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1000 urb->iso_frame_desc[i].offset = offset;
1001 urb->iso_frame_desc[i].length = len;
1002 i++;
1003 }
1004
1005 urb->number_of_packets = i;
1006 }
1007
1008 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
1009 {
1010 struct btusb_data *data = hci_get_drvdata(hdev);
1011 struct urb *urb;
1012 unsigned char *buf;
1013 unsigned int pipe;
1014 int err, size;
1015
1016 BT_DBG("%s", hdev->name);
1017
1018 if (!data->isoc_rx_ep)
1019 return -ENODEV;
1020
1021 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
1022 if (!urb)
1023 return -ENOMEM;
1024
1025 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
1026 BTUSB_MAX_ISOC_FRAMES;
1027
1028 buf = kmalloc(size, mem_flags);
1029 if (!buf) {
1030 usb_free_urb(urb);
1031 return -ENOMEM;
1032 }
1033
1034 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
1035
1036 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
1037 hdev, data->isoc_rx_ep->bInterval);
1038
1039 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
1040
1041 __fill_isoc_descriptor(urb, size,
1042 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
1043
1044 usb_anchor_urb(urb, &data->isoc_anchor);
1045
1046 err = usb_submit_urb(urb, mem_flags);
1047 if (err < 0) {
1048 if (err != -EPERM && err != -ENODEV)
1049 bt_dev_err(hdev, "urb %p submission failed (%d)",
1050 urb, -err);
1051 usb_unanchor_urb(urb);
1052 }
1053
1054 usb_free_urb(urb);
1055
1056 return err;
1057 }
1058
1059 static void btusb_diag_complete(struct urb *urb)
1060 {
1061 struct hci_dev *hdev = urb->context;
1062 struct btusb_data *data = hci_get_drvdata(hdev);
1063 int err;
1064
1065 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1066 urb->actual_length);
1067
1068 if (urb->status == 0) {
1069 struct sk_buff *skb;
1070
1071 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1072 if (skb) {
1073 skb_put_data(skb, urb->transfer_buffer,
1074 urb->actual_length);
1075 hci_recv_diag(hdev, skb);
1076 }
1077 } else if (urb->status == -ENOENT) {
1078 /* Avoid suspend failed when usb_kill_urb */
1079 return;
1080 }
1081
1082 if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1083 return;
1084
1085 usb_anchor_urb(urb, &data->diag_anchor);
1086 usb_mark_last_busy(data->udev);
1087
1088 err = usb_submit_urb(urb, GFP_ATOMIC);
1089 if (err < 0) {
1090 /* -EPERM: urb is being killed;
1091 * -ENODEV: device got disconnected
1092 */
1093 if (err != -EPERM && err != -ENODEV)
1094 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1095 urb, -err);
1096 usb_unanchor_urb(urb);
1097 }
1098 }
1099
1100 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1101 {
1102 struct btusb_data *data = hci_get_drvdata(hdev);
1103 struct urb *urb;
1104 unsigned char *buf;
1105 unsigned int pipe;
1106 int err, size = HCI_MAX_FRAME_SIZE;
1107
1108 BT_DBG("%s", hdev->name);
1109
1110 if (!data->diag_rx_ep)
1111 return -ENODEV;
1112
1113 urb = usb_alloc_urb(0, mem_flags);
1114 if (!urb)
1115 return -ENOMEM;
1116
1117 buf = kmalloc(size, mem_flags);
1118 if (!buf) {
1119 usb_free_urb(urb);
1120 return -ENOMEM;
1121 }
1122
1123 pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1124
1125 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1126 btusb_diag_complete, hdev);
1127
1128 urb->transfer_flags |= URB_FREE_BUFFER;
1129
1130 usb_mark_last_busy(data->udev);
1131 usb_anchor_urb(urb, &data->diag_anchor);
1132
1133 err = usb_submit_urb(urb, mem_flags);
1134 if (err < 0) {
1135 if (err != -EPERM && err != -ENODEV)
1136 bt_dev_err(hdev, "urb %p submission failed (%d)",
1137 urb, -err);
1138 usb_unanchor_urb(urb);
1139 }
1140
1141 usb_free_urb(urb);
1142
1143 return err;
1144 }
1145
1146 static void btusb_tx_complete(struct urb *urb)
1147 {
1148 struct sk_buff *skb = urb->context;
1149 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1150 struct btusb_data *data = hci_get_drvdata(hdev);
1151 unsigned long flags;
1152
1153 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1154 urb->actual_length);
1155
1156 if (!test_bit(HCI_RUNNING, &hdev->flags))
1157 goto done;
1158
1159 if (!urb->status)
1160 hdev->stat.byte_tx += urb->transfer_buffer_length;
1161 else
1162 hdev->stat.err_tx++;
1163
1164 done:
1165 spin_lock_irqsave(&data->txlock, flags);
1166 data->tx_in_flight--;
1167 spin_unlock_irqrestore(&data->txlock, flags);
1168
1169 kfree(urb->setup_packet);
1170
1171 kfree_skb(skb);
1172 }
1173
1174 static void btusb_isoc_tx_complete(struct urb *urb)
1175 {
1176 struct sk_buff *skb = urb->context;
1177 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1178
1179 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1180 urb->actual_length);
1181
1182 if (!test_bit(HCI_RUNNING, &hdev->flags))
1183 goto done;
1184
1185 if (!urb->status)
1186 hdev->stat.byte_tx += urb->transfer_buffer_length;
1187 else
1188 hdev->stat.err_tx++;
1189
1190 done:
1191 kfree(urb->setup_packet);
1192
1193 kfree_skb(skb);
1194 }
1195
1196 static int btusb_open(struct hci_dev *hdev)
1197 {
1198 struct btusb_data *data = hci_get_drvdata(hdev);
1199 int err;
1200
1201 BT_DBG("%s", hdev->name);
1202
1203 err = usb_autopm_get_interface(data->intf);
1204 if (err < 0)
1205 return err;
1206
1207 /* Patching USB firmware files prior to starting any URBs of HCI path
1208 * It is more safe to use USB bulk channel for downloading USB patch
1209 */
1210 if (data->setup_on_usb) {
1211 err = data->setup_on_usb(hdev);
1212 if (err < 0)
1213 goto setup_fail;
1214 }
1215
1216 data->intf->needs_remote_wakeup = 1;
1217
1218 /* Disable device remote wakeup when host is suspended
1219 * For Realtek chips, global suspend without
1220 * SET_FEATURE (DEVICE_REMOTE_WAKEUP) can save more power in device.
1221 */
1222 if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1223 device_wakeup_disable(&data->udev->dev);
1224
1225 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1226 goto done;
1227
1228 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1229 if (err < 0)
1230 goto failed;
1231
1232 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1233 if (err < 0) {
1234 usb_kill_anchored_urbs(&data->intr_anchor);
1235 goto failed;
1236 }
1237
1238 set_bit(BTUSB_BULK_RUNNING, &data->flags);
1239 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1240
1241 if (data->diag) {
1242 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1243 set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1244 }
1245
1246 done:
1247 usb_autopm_put_interface(data->intf);
1248 return 0;
1249
1250 failed:
1251 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1252 setup_fail:
1253 usb_autopm_put_interface(data->intf);
1254 return err;
1255 }
1256
1257 static void btusb_stop_traffic(struct btusb_data *data)
1258 {
1259 usb_kill_anchored_urbs(&data->intr_anchor);
1260 usb_kill_anchored_urbs(&data->bulk_anchor);
1261 usb_kill_anchored_urbs(&data->isoc_anchor);
1262 usb_kill_anchored_urbs(&data->diag_anchor);
1263 usb_kill_anchored_urbs(&data->ctrl_anchor);
1264 }
1265
1266 static int btusb_close(struct hci_dev *hdev)
1267 {
1268 struct btusb_data *data = hci_get_drvdata(hdev);
1269 int err;
1270
1271 BT_DBG("%s", hdev->name);
1272
1273 cancel_work_sync(&data->work);
1274 cancel_work_sync(&data->waker);
1275
1276 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1277 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1278 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1279 clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1280
1281 btusb_stop_traffic(data);
1282 btusb_free_frags(data);
1283
1284 err = usb_autopm_get_interface(data->intf);
1285 if (err < 0)
1286 goto failed;
1287
1288 data->intf->needs_remote_wakeup = 0;
1289
1290 /* Enable remote wake up for auto-suspend */
1291 if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1292 data->intf->needs_remote_wakeup = 1;
1293
1294 usb_autopm_put_interface(data->intf);
1295
1296 failed:
1297 usb_scuttle_anchored_urbs(&data->deferred);
1298 return 0;
1299 }
1300
1301 static int btusb_flush(struct hci_dev *hdev)
1302 {
1303 struct btusb_data *data = hci_get_drvdata(hdev);
1304
1305 BT_DBG("%s", hdev->name);
1306
1307 usb_kill_anchored_urbs(&data->tx_anchor);
1308 btusb_free_frags(data);
1309
1310 return 0;
1311 }
1312
1313 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1314 {
1315 struct btusb_data *data = hci_get_drvdata(hdev);
1316 struct usb_ctrlrequest *dr;
1317 struct urb *urb;
1318 unsigned int pipe;
1319
1320 urb = usb_alloc_urb(0, GFP_KERNEL);
1321 if (!urb)
1322 return ERR_PTR(-ENOMEM);
1323
1324 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1325 if (!dr) {
1326 usb_free_urb(urb);
1327 return ERR_PTR(-ENOMEM);
1328 }
1329
1330 dr->bRequestType = data->cmdreq_type;
1331 dr->bRequest = data->cmdreq;
1332 dr->wIndex = 0;
1333 dr->wValue = 0;
1334 dr->wLength = __cpu_to_le16(skb->len);
1335
1336 pipe = usb_sndctrlpipe(data->udev, 0x00);
1337
1338 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1339 skb->data, skb->len, btusb_tx_complete, skb);
1340
1341 skb->dev = (void *)hdev;
1342
1343 return urb;
1344 }
1345
1346 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1347 {
1348 struct btusb_data *data = hci_get_drvdata(hdev);
1349 struct urb *urb;
1350 unsigned int pipe;
1351
1352 if (!data->bulk_tx_ep)
1353 return ERR_PTR(-ENODEV);
1354
1355 urb = usb_alloc_urb(0, GFP_KERNEL);
1356 if (!urb)
1357 return ERR_PTR(-ENOMEM);
1358
1359 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1360
1361 usb_fill_bulk_urb(urb, data->udev, pipe,
1362 skb->data, skb->len, btusb_tx_complete, skb);
1363
1364 skb->dev = (void *)hdev;
1365
1366 return urb;
1367 }
1368
1369 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1370 {
1371 struct btusb_data *data = hci_get_drvdata(hdev);
1372 struct urb *urb;
1373 unsigned int pipe;
1374
1375 if (!data->isoc_tx_ep)
1376 return ERR_PTR(-ENODEV);
1377
1378 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1379 if (!urb)
1380 return ERR_PTR(-ENOMEM);
1381
1382 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1383
1384 usb_fill_int_urb(urb, data->udev, pipe,
1385 skb->data, skb->len, btusb_isoc_tx_complete,
1386 skb, data->isoc_tx_ep->bInterval);
1387
1388 urb->transfer_flags = URB_ISO_ASAP;
1389
1390 __fill_isoc_descriptor(urb, skb->len,
1391 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1392
1393 skb->dev = (void *)hdev;
1394
1395 return urb;
1396 }
1397
1398 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1399 {
1400 struct btusb_data *data = hci_get_drvdata(hdev);
1401 int err;
1402
1403 usb_anchor_urb(urb, &data->tx_anchor);
1404
1405 err = usb_submit_urb(urb, GFP_KERNEL);
1406 if (err < 0) {
1407 if (err != -EPERM && err != -ENODEV)
1408 bt_dev_err(hdev, "urb %p submission failed (%d)",
1409 urb, -err);
1410 kfree(urb->setup_packet);
1411 usb_unanchor_urb(urb);
1412 } else {
1413 usb_mark_last_busy(data->udev);
1414 }
1415
1416 usb_free_urb(urb);
1417 return err;
1418 }
1419
1420 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1421 {
1422 struct btusb_data *data = hci_get_drvdata(hdev);
1423 unsigned long flags;
1424 bool suspending;
1425
1426 spin_lock_irqsave(&data->txlock, flags);
1427 suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1428 if (!suspending)
1429 data->tx_in_flight++;
1430 spin_unlock_irqrestore(&data->txlock, flags);
1431
1432 if (!suspending)
1433 return submit_tx_urb(hdev, urb);
1434
1435 usb_anchor_urb(urb, &data->deferred);
1436 schedule_work(&data->waker);
1437
1438 usb_free_urb(urb);
1439 return 0;
1440 }
1441
1442 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1443 {
1444 struct urb *urb;
1445
1446 BT_DBG("%s", hdev->name);
1447
1448 switch (hci_skb_pkt_type(skb)) {
1449 case HCI_COMMAND_PKT:
1450 urb = alloc_ctrl_urb(hdev, skb);
1451 if (IS_ERR(urb))
1452 return PTR_ERR(urb);
1453
1454 hdev->stat.cmd_tx++;
1455 return submit_or_queue_tx_urb(hdev, urb);
1456
1457 case HCI_ACLDATA_PKT:
1458 urb = alloc_bulk_urb(hdev, skb);
1459 if (IS_ERR(urb))
1460 return PTR_ERR(urb);
1461
1462 hdev->stat.acl_tx++;
1463 return submit_or_queue_tx_urb(hdev, urb);
1464
1465 case HCI_SCODATA_PKT:
1466 if (hci_conn_num(hdev, SCO_LINK) < 1)
1467 return -ENODEV;
1468
1469 urb = alloc_isoc_urb(hdev, skb);
1470 if (IS_ERR(urb))
1471 return PTR_ERR(urb);
1472
1473 hdev->stat.sco_tx++;
1474 return submit_tx_urb(hdev, urb);
1475 }
1476
1477 return -EILSEQ;
1478 }
1479
1480 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1481 {
1482 struct btusb_data *data = hci_get_drvdata(hdev);
1483
1484 BT_DBG("%s evt %d", hdev->name, evt);
1485
1486 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1487 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1488 schedule_work(&data->work);
1489 }
1490 }
1491
1492 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1493 {
1494 struct btusb_data *data = hci_get_drvdata(hdev);
1495 struct usb_interface *intf = data->isoc;
1496 struct usb_endpoint_descriptor *ep_desc;
1497 int i, err;
1498
1499 if (!data->isoc)
1500 return -ENODEV;
1501
1502 err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1503 if (err < 0) {
1504 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1505 return err;
1506 }
1507
1508 data->isoc_altsetting = altsetting;
1509
1510 data->isoc_tx_ep = NULL;
1511 data->isoc_rx_ep = NULL;
1512
1513 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1514 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1515
1516 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1517 data->isoc_tx_ep = ep_desc;
1518 continue;
1519 }
1520
1521 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1522 data->isoc_rx_ep = ep_desc;
1523 continue;
1524 }
1525 }
1526
1527 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1528 bt_dev_err(hdev, "invalid SCO descriptors");
1529 return -ENODEV;
1530 }
1531
1532 return 0;
1533 }
1534
1535 static void btusb_work(struct work_struct *work)
1536 {
1537 struct btusb_data *data = container_of(work, struct btusb_data, work);
1538 struct hci_dev *hdev = data->hdev;
1539 int new_alts;
1540 int err;
1541
1542 if (data->sco_num > 0) {
1543 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1544 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1545 if (err < 0) {
1546 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1547 usb_kill_anchored_urbs(&data->isoc_anchor);
1548 return;
1549 }
1550
1551 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1552 }
1553
1554 if (hdev->voice_setting & 0x0020) {
1555 static const int alts[3] = { 2, 4, 5 };
1556
1557 new_alts = alts[data->sco_num - 1];
1558 } else {
1559 new_alts = data->sco_num;
1560 }
1561
1562 if (data->isoc_altsetting != new_alts) {
1563 unsigned long flags;
1564
1565 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1566 usb_kill_anchored_urbs(&data->isoc_anchor);
1567
1568 /* When isochronous alternate setting needs to be
1569 * changed, because SCO connection has been added
1570 * or removed, a packet fragment may be left in the
1571 * reassembling state. This could lead to wrongly
1572 * assembled fragments.
1573 *
1574 * Clear outstanding fragment when selecting a new
1575 * alternate setting.
1576 */
1577 spin_lock_irqsave(&data->rxlock, flags);
1578 kfree_skb(data->sco_skb);
1579 data->sco_skb = NULL;
1580 spin_unlock_irqrestore(&data->rxlock, flags);
1581
1582 if (__set_isoc_interface(hdev, new_alts) < 0)
1583 return;
1584 }
1585
1586 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1587 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1588 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1589 else
1590 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1591 }
1592 } else {
1593 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1594 usb_kill_anchored_urbs(&data->isoc_anchor);
1595
1596 __set_isoc_interface(hdev, 0);
1597 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1598 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1599 }
1600 }
1601
1602 static void btusb_waker(struct work_struct *work)
1603 {
1604 struct btusb_data *data = container_of(work, struct btusb_data, waker);
1605 int err;
1606
1607 err = usb_autopm_get_interface(data->intf);
1608 if (err < 0)
1609 return;
1610
1611 usb_autopm_put_interface(data->intf);
1612 }
1613
1614 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1615 {
1616 struct sk_buff *skb;
1617 u8 val = 0x00;
1618
1619 BT_DBG("%s", hdev->name);
1620
1621 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1622 if (IS_ERR(skb))
1623 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
1624 else
1625 kfree_skb(skb);
1626
1627 return 0;
1628 }
1629
1630 static int btusb_setup_csr(struct hci_dev *hdev)
1631 {
1632 struct hci_rp_read_local_version *rp;
1633 struct sk_buff *skb;
1634
1635 BT_DBG("%s", hdev->name);
1636
1637 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1638 HCI_INIT_TIMEOUT);
1639 if (IS_ERR(skb)) {
1640 int err = PTR_ERR(skb);
1641 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
1642 return err;
1643 }
1644
1645 if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1646 bt_dev_err(hdev, "CSR: Local version length mismatch");
1647 kfree_skb(skb);
1648 return -EIO;
1649 }
1650
1651 rp = (struct hci_rp_read_local_version *)skb->data;
1652
1653 /* Detect controllers which aren't real CSR ones. */
1654 if (le16_to_cpu(rp->manufacturer) != 10 ||
1655 le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1656 /* Clear the reset quirk since this is not an actual
1657 * early Bluetooth 1.1 device from CSR.
1658 */
1659 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1660
1661 /* These fake CSR controllers have all a broken
1662 * stored link key handling and so just disable it.
1663 */
1664 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1665 }
1666
1667 kfree_skb(skb);
1668
1669 return 0;
1670 }
1671
1672 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1673 struct intel_version *ver)
1674 {
1675 const struct firmware *fw;
1676 char fwname[64];
1677 int ret;
1678
1679 snprintf(fwname, sizeof(fwname),
1680 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1681 ver->hw_platform, ver->hw_variant, ver->hw_revision,
1682 ver->fw_variant, ver->fw_revision, ver->fw_build_num,
1683 ver->fw_build_ww, ver->fw_build_yy);
1684
1685 ret = request_firmware(&fw, fwname, &hdev->dev);
1686 if (ret < 0) {
1687 if (ret == -EINVAL) {
1688 bt_dev_err(hdev, "Intel firmware file request failed (%d)",
1689 ret);
1690 return NULL;
1691 }
1692
1693 bt_dev_err(hdev, "failed to open Intel firmware file: %s (%d)",
1694 fwname, ret);
1695
1696 /* If the correct firmware patch file is not found, use the
1697 * default firmware patch file instead
1698 */
1699 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1700 ver->hw_platform, ver->hw_variant);
1701 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1702 bt_dev_err(hdev, "failed to open default fw file: %s",
1703 fwname);
1704 return NULL;
1705 }
1706 }
1707
1708 bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname);
1709
1710 return fw;
1711 }
1712
1713 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1714 const struct firmware *fw,
1715 const u8 **fw_ptr, int *disable_patch)
1716 {
1717 struct sk_buff *skb;
1718 struct hci_command_hdr *cmd;
1719 const u8 *cmd_param;
1720 struct hci_event_hdr *evt = NULL;
1721 const u8 *evt_param = NULL;
1722 int remain = fw->size - (*fw_ptr - fw->data);
1723
1724 /* The first byte indicates the types of the patch command or event.
1725 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1726 * in the current firmware buffer doesn't start with 0x01 or
1727 * the size of remain buffer is smaller than HCI command header,
1728 * the firmware file is corrupted and it should stop the patching
1729 * process.
1730 */
1731 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1732 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd read");
1733 return -EINVAL;
1734 }
1735 (*fw_ptr)++;
1736 remain--;
1737
1738 cmd = (struct hci_command_hdr *)(*fw_ptr);
1739 *fw_ptr += sizeof(*cmd);
1740 remain -= sizeof(*cmd);
1741
1742 /* Ensure that the remain firmware data is long enough than the length
1743 * of command parameter. If not, the firmware file is corrupted.
1744 */
1745 if (remain < cmd->plen) {
1746 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd len");
1747 return -EFAULT;
1748 }
1749
1750 /* If there is a command that loads a patch in the firmware
1751 * file, then enable the patch upon success, otherwise just
1752 * disable the manufacturer mode, for example patch activation
1753 * is not required when the default firmware patch file is used
1754 * because there are no patch data to load.
1755 */
1756 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1757 *disable_patch = 0;
1758
1759 cmd_param = *fw_ptr;
1760 *fw_ptr += cmd->plen;
1761 remain -= cmd->plen;
1762
1763 /* This reads the expected events when the above command is sent to the
1764 * device. Some vendor commands expects more than one events, for
1765 * example command status event followed by vendor specific event.
1766 * For this case, it only keeps the last expected event. so the command
1767 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1768 * last expected event.
1769 */
1770 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1771 (*fw_ptr)++;
1772 remain--;
1773
1774 evt = (struct hci_event_hdr *)(*fw_ptr);
1775 *fw_ptr += sizeof(*evt);
1776 remain -= sizeof(*evt);
1777
1778 if (remain < evt->plen) {
1779 bt_dev_err(hdev, "Intel fw corrupted: invalid evt len");
1780 return -EFAULT;
1781 }
1782
1783 evt_param = *fw_ptr;
1784 *fw_ptr += evt->plen;
1785 remain -= evt->plen;
1786 }
1787
1788 /* Every HCI commands in the firmware file has its correspond event.
1789 * If event is not found or remain is smaller than zero, the firmware
1790 * file is corrupted.
1791 */
1792 if (!evt || !evt_param || remain < 0) {
1793 bt_dev_err(hdev, "Intel fw corrupted: invalid evt read");
1794 return -EFAULT;
1795 }
1796
1797 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1798 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1799 if (IS_ERR(skb)) {
1800 bt_dev_err(hdev, "sending Intel patch command (0x%4.4x) failed (%ld)",
1801 cmd->opcode, PTR_ERR(skb));
1802 return PTR_ERR(skb);
1803 }
1804
1805 /* It ensures that the returned event matches the event data read from
1806 * the firmware file. At fist, it checks the length and then
1807 * the contents of the event.
1808 */
1809 if (skb->len != evt->plen) {
1810 bt_dev_err(hdev, "mismatch event length (opcode 0x%4.4x)",
1811 le16_to_cpu(cmd->opcode));
1812 kfree_skb(skb);
1813 return -EFAULT;
1814 }
1815
1816 if (memcmp(skb->data, evt_param, evt->plen)) {
1817 bt_dev_err(hdev, "mismatch event parameter (opcode 0x%4.4x)",
1818 le16_to_cpu(cmd->opcode));
1819 kfree_skb(skb);
1820 return -EFAULT;
1821 }
1822 kfree_skb(skb);
1823
1824 return 0;
1825 }
1826
1827 static int btusb_setup_intel(struct hci_dev *hdev)
1828 {
1829 struct sk_buff *skb;
1830 const struct firmware *fw;
1831 const u8 *fw_ptr;
1832 int disable_patch, err;
1833 struct intel_version ver;
1834
1835 BT_DBG("%s", hdev->name);
1836
1837 /* The controller has a bug with the first HCI command sent to it
1838 * returning number of completed commands as zero. This would stall the
1839 * command processing in the Bluetooth core.
1840 *
1841 * As a workaround, send HCI Reset command first which will reset the
1842 * number of completed commands and allow normal command processing
1843 * from now on.
1844 */
1845 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1846 if (IS_ERR(skb)) {
1847 bt_dev_err(hdev, "sending initial HCI reset command failed (%ld)",
1848 PTR_ERR(skb));
1849 return PTR_ERR(skb);
1850 }
1851 kfree_skb(skb);
1852
1853 /* Read Intel specific controller version first to allow selection of
1854 * which firmware file to load.
1855 *
1856 * The returned information are hardware variant and revision plus
1857 * firmware variant, revision and build number.
1858 */
1859 err = btintel_read_version(hdev, &ver);
1860 if (err)
1861 return err;
1862
1863 bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1864 ver.hw_platform, ver.hw_variant, ver.hw_revision,
1865 ver.fw_variant, ver.fw_revision, ver.fw_build_num,
1866 ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
1867
1868 /* fw_patch_num indicates the version of patch the device currently
1869 * have. If there is no patch data in the device, it is always 0x00.
1870 * So, if it is other than 0x00, no need to patch the device again.
1871 */
1872 if (ver.fw_patch_num) {
1873 bt_dev_info(hdev, "Intel device is already patched. "
1874 "patch num: %02x", ver.fw_patch_num);
1875 goto complete;
1876 }
1877
1878 /* Opens the firmware patch file based on the firmware version read
1879 * from the controller. If it fails to open the matching firmware
1880 * patch file, it tries to open the default firmware patch file.
1881 * If no patch file is found, allow the device to operate without
1882 * a patch.
1883 */
1884 fw = btusb_setup_intel_get_fw(hdev, &ver);
1885 if (!fw)
1886 goto complete;
1887 fw_ptr = fw->data;
1888
1889 /* Enable the manufacturer mode of the controller.
1890 * Only while this mode is enabled, the driver can download the
1891 * firmware patch data and configuration parameters.
1892 */
1893 err = btintel_enter_mfg(hdev);
1894 if (err) {
1895 release_firmware(fw);
1896 return err;
1897 }
1898
1899 disable_patch = 1;
1900
1901 /* The firmware data file consists of list of Intel specific HCI
1902 * commands and its expected events. The first byte indicates the
1903 * type of the message, either HCI command or HCI event.
1904 *
1905 * It reads the command and its expected event from the firmware file,
1906 * and send to the controller. Once __hci_cmd_sync_ev() returns,
1907 * the returned event is compared with the event read from the firmware
1908 * file and it will continue until all the messages are downloaded to
1909 * the controller.
1910 *
1911 * Once the firmware patching is completed successfully,
1912 * the manufacturer mode is disabled with reset and activating the
1913 * downloaded patch.
1914 *
1915 * If the firmware patching fails, the manufacturer mode is
1916 * disabled with reset and deactivating the patch.
1917 *
1918 * If the default patch file is used, no reset is done when disabling
1919 * the manufacturer.
1920 */
1921 while (fw->size > fw_ptr - fw->data) {
1922 int ret;
1923
1924 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1925 &disable_patch);
1926 if (ret < 0)
1927 goto exit_mfg_deactivate;
1928 }
1929
1930 release_firmware(fw);
1931
1932 if (disable_patch)
1933 goto exit_mfg_disable;
1934
1935 /* Patching completed successfully and disable the manufacturer mode
1936 * with reset and activate the downloaded firmware patches.
1937 */
1938 err = btintel_exit_mfg(hdev, true, true);
1939 if (err)
1940 return err;
1941
1942 /* Need build number for downloaded fw patches in
1943 * every power-on boot
1944 */
1945 err = btintel_read_version(hdev, &ver);
1946 if (err)
1947 return err;
1948 bt_dev_info(hdev, "Intel BT fw patch 0x%02x completed & activated",
1949 ver.fw_patch_num);
1950
1951 goto complete;
1952
1953 exit_mfg_disable:
1954 /* Disable the manufacturer mode without reset */
1955 err = btintel_exit_mfg(hdev, false, false);
1956 if (err)
1957 return err;
1958
1959 bt_dev_info(hdev, "Intel firmware patch completed");
1960
1961 goto complete;
1962
1963 exit_mfg_deactivate:
1964 release_firmware(fw);
1965
1966 /* Patching failed. Disable the manufacturer mode with reset and
1967 * deactivate the downloaded firmware patches.
1968 */
1969 err = btintel_exit_mfg(hdev, true, false);
1970 if (err)
1971 return err;
1972
1973 bt_dev_info(hdev, "Intel firmware patch completed and deactivated");
1974
1975 complete:
1976 /* Set the event mask for Intel specific vendor events. This enables
1977 * a few extra events that are useful during general operation.
1978 */
1979 btintel_set_event_mask_mfg(hdev, false);
1980
1981 btintel_check_bdaddr(hdev);
1982 return 0;
1983 }
1984
1985 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1986 {
1987 struct sk_buff *skb;
1988 struct hci_event_hdr *hdr;
1989 struct hci_ev_cmd_complete *evt;
1990
1991 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
1992 if (!skb)
1993 return -ENOMEM;
1994
1995 hdr = skb_put(skb, sizeof(*hdr));
1996 hdr->evt = HCI_EV_CMD_COMPLETE;
1997 hdr->plen = sizeof(*evt) + 1;
1998
1999 evt = skb_put(skb, sizeof(*evt));
2000 evt->ncmd = 0x01;
2001 evt->opcode = cpu_to_le16(opcode);
2002
2003 skb_put_u8(skb, 0x00);
2004
2005 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2006
2007 return hci_recv_frame(hdev, skb);
2008 }
2009
2010 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
2011 int count)
2012 {
2013 /* When the device is in bootloader mode, then it can send
2014 * events via the bulk endpoint. These events are treated the
2015 * same way as the ones received from the interrupt endpoint.
2016 */
2017 if (test_bit(BTUSB_BOOTLOADER, &data->flags))
2018 return btusb_recv_intr(data, buffer, count);
2019
2020 return btusb_recv_bulk(data, buffer, count);
2021 }
2022
2023 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
2024 unsigned int len)
2025 {
2026 const struct intel_bootup *evt = ptr;
2027
2028 if (len != sizeof(*evt))
2029 return;
2030
2031 if (test_and_clear_bit(BTUSB_BOOTING, &data->flags))
2032 wake_up_bit(&data->flags, BTUSB_BOOTING);
2033 }
2034
2035 static void btusb_intel_secure_send_result(struct btusb_data *data,
2036 const void *ptr, unsigned int len)
2037 {
2038 const struct intel_secure_send_result *evt = ptr;
2039
2040 if (len != sizeof(*evt))
2041 return;
2042
2043 if (evt->result)
2044 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
2045
2046 if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
2047 test_bit(BTUSB_FIRMWARE_LOADED, &data->flags))
2048 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
2049 }
2050
2051 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2052 {
2053 struct btusb_data *data = hci_get_drvdata(hdev);
2054
2055 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2056 struct hci_event_hdr *hdr = (void *)skb->data;
2057
2058 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2059 hdr->plen > 0) {
2060 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2061 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2062
2063 switch (skb->data[2]) {
2064 case 0x02:
2065 /* When switching to the operational firmware
2066 * the device sends a vendor specific event
2067 * indicating that the bootup completed.
2068 */
2069 btusb_intel_bootup(data, ptr, len);
2070 break;
2071 case 0x06:
2072 /* When the firmware loading completes the
2073 * device sends out a vendor specific event
2074 * indicating the result of the firmware
2075 * loading.
2076 */
2077 btusb_intel_secure_send_result(data, ptr, len);
2078 break;
2079 }
2080 }
2081 }
2082
2083 return hci_recv_frame(hdev, skb);
2084 }
2085
2086 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2087 {
2088 struct btusb_data *data = hci_get_drvdata(hdev);
2089 struct urb *urb;
2090
2091 BT_DBG("%s", hdev->name);
2092
2093 switch (hci_skb_pkt_type(skb)) {
2094 case HCI_COMMAND_PKT:
2095 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2096 struct hci_command_hdr *cmd = (void *)skb->data;
2097 __u16 opcode = le16_to_cpu(cmd->opcode);
2098
2099 /* When in bootloader mode and the command 0xfc09
2100 * is received, it needs to be send down the
2101 * bulk endpoint. So allocate a bulk URB instead.
2102 */
2103 if (opcode == 0xfc09)
2104 urb = alloc_bulk_urb(hdev, skb);
2105 else
2106 urb = alloc_ctrl_urb(hdev, skb);
2107
2108 /* When the 0xfc01 command is issued to boot into
2109 * the operational firmware, it will actually not
2110 * send a command complete event. To keep the flow
2111 * control working inject that event here.
2112 */
2113 if (opcode == 0xfc01)
2114 inject_cmd_complete(hdev, opcode);
2115 } else {
2116 urb = alloc_ctrl_urb(hdev, skb);
2117 }
2118 if (IS_ERR(urb))
2119 return PTR_ERR(urb);
2120
2121 hdev->stat.cmd_tx++;
2122 return submit_or_queue_tx_urb(hdev, urb);
2123
2124 case HCI_ACLDATA_PKT:
2125 urb = alloc_bulk_urb(hdev, skb);
2126 if (IS_ERR(urb))
2127 return PTR_ERR(urb);
2128
2129 hdev->stat.acl_tx++;
2130 return submit_or_queue_tx_urb(hdev, urb);
2131
2132 case HCI_SCODATA_PKT:
2133 if (hci_conn_num(hdev, SCO_LINK) < 1)
2134 return -ENODEV;
2135
2136 urb = alloc_isoc_urb(hdev, skb);
2137 if (IS_ERR(urb))
2138 return PTR_ERR(urb);
2139
2140 hdev->stat.sco_tx++;
2141 return submit_tx_urb(hdev, urb);
2142 }
2143
2144 return -EILSEQ;
2145 }
2146
2147 static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver,
2148 struct intel_boot_params *params,
2149 char *fw_name, size_t len,
2150 const char *suffix)
2151 {
2152 switch (ver->hw_variant) {
2153 case 0x0b: /* SfP */
2154 case 0x0c: /* WsP */
2155 snprintf(fw_name, len, "intel/ibt-%u-%u.%s",
2156 le16_to_cpu(ver->hw_variant),
2157 le16_to_cpu(params->dev_revid),
2158 suffix);
2159 break;
2160 case 0x11: /* JfP */
2161 case 0x12: /* ThP */
2162 case 0x13: /* HrP */
2163 case 0x14: /* CcP */
2164 snprintf(fw_name, len, "intel/ibt-%u-%u-%u.%s",
2165 le16_to_cpu(ver->hw_variant),
2166 le16_to_cpu(ver->hw_revision),
2167 le16_to_cpu(ver->fw_revision),
2168 suffix);
2169 break;
2170 default:
2171 return false;
2172 }
2173 return true;
2174 }
2175
2176 static int btusb_setup_intel_new(struct hci_dev *hdev)
2177 {
2178 struct btusb_data *data = hci_get_drvdata(hdev);
2179 struct intel_version ver;
2180 struct intel_boot_params params;
2181 const struct firmware *fw;
2182 u32 boot_param;
2183 char fwname[64];
2184 ktime_t calltime, delta, rettime;
2185 unsigned long long duration;
2186 int err;
2187
2188 BT_DBG("%s", hdev->name);
2189
2190 /* Set the default boot parameter to 0x0 and it is updated to
2191 * SKU specific boot parameter after reading Intel_Write_Boot_Params
2192 * command while downloading the firmware.
2193 */
2194 boot_param = 0x00000000;
2195
2196 calltime = ktime_get();
2197
2198 /* Read the Intel version information to determine if the device
2199 * is in bootloader mode or if it already has operational firmware
2200 * loaded.
2201 */
2202 err = btintel_read_version(hdev, &ver);
2203 if (err) {
2204 bt_dev_err(hdev, "Intel Read version failed (%d)", err);
2205 btintel_reset_to_bootloader(hdev);
2206 return err;
2207 }
2208
2209 /* The hardware platform number has a fixed value of 0x37 and
2210 * for now only accept this single value.
2211 */
2212 if (ver.hw_platform != 0x37) {
2213 bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)",
2214 ver.hw_platform);
2215 return -EINVAL;
2216 }
2217
2218 /* Check for supported iBT hardware variants of this firmware
2219 * loading method.
2220 *
2221 * This check has been put in place to ensure correct forward
2222 * compatibility options when newer hardware variants come along.
2223 */
2224 switch (ver.hw_variant) {
2225 case 0x0b: /* SfP */
2226 case 0x0c: /* WsP */
2227 case 0x11: /* JfP */
2228 case 0x12: /* ThP */
2229 case 0x13: /* HrP */
2230 case 0x14: /* CcP */
2231 break;
2232 default:
2233 bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",
2234 ver.hw_variant);
2235 return -EINVAL;
2236 }
2237
2238 btintel_version_info(hdev, &ver);
2239
2240 /* The firmware variant determines if the device is in bootloader
2241 * mode or is running operational firmware. The value 0x06 identifies
2242 * the bootloader and the value 0x23 identifies the operational
2243 * firmware.
2244 *
2245 * When the operational firmware is already present, then only
2246 * the check for valid Bluetooth device address is needed. This
2247 * determines if the device will be added as configured or
2248 * unconfigured controller.
2249 *
2250 * It is not possible to use the Secure Boot Parameters in this
2251 * case since that command is only available in bootloader mode.
2252 */
2253 if (ver.fw_variant == 0x23) {
2254 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2255 btintel_check_bdaddr(hdev);
2256 return 0;
2257 }
2258
2259 /* If the device is not in bootloader mode, then the only possible
2260 * choice is to return an error and abort the device initialization.
2261 */
2262 if (ver.fw_variant != 0x06) {
2263 bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)",
2264 ver.fw_variant);
2265 return -ENODEV;
2266 }
2267
2268 /* Read the secure boot parameters to identify the operating
2269 * details of the bootloader.
2270 */
2271 err = btintel_read_boot_params(hdev, &params);
2272 if (err)
2273 return err;
2274
2275 /* It is required that every single firmware fragment is acknowledged
2276 * with a command complete event. If the boot parameters indicate
2277 * that this bootloader does not send them, then abort the setup.
2278 */
2279 if (params.limited_cce != 0x00) {
2280 bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",
2281 params.limited_cce);
2282 return -EINVAL;
2283 }
2284
2285 /* If the OTP has no valid Bluetooth device address, then there will
2286 * also be no valid address for the operational firmware.
2287 */
2288 if (!bacmp(&params.otp_bdaddr, BDADDR_ANY)) {
2289 bt_dev_info(hdev, "No device address configured");
2290 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2291 }
2292
2293 /* With this Intel bootloader only the hardware variant and device
2294 * revision information are used to select the right firmware for SfP
2295 * and WsP.
2296 *
2297 * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2298 *
2299 * Currently the supported hardware variants are:
2300 * 11 (0x0b) for iBT3.0 (LnP/SfP)
2301 * 12 (0x0c) for iBT3.5 (WsP)
2302 *
2303 * For ThP/JfP and for future SKU's, the FW name varies based on HW
2304 * variant, HW revision and FW revision, as these are dependent on CNVi
2305 * and RF Combination.
2306 *
2307 * 17 (0x11) for iBT3.5 (JfP)
2308 * 18 (0x12) for iBT3.5 (ThP)
2309 *
2310 * The firmware file name for these will be
2311 * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi.
2312 *
2313 */
2314 err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2315 sizeof(fwname), "sfi");
2316 if (!err) {
2317 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2318 return -EINVAL;
2319 }
2320
2321 err = request_firmware(&fw, fwname, &hdev->dev);
2322 if (err < 0) {
2323 bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err);
2324 return err;
2325 }
2326
2327 bt_dev_info(hdev, "Found device firmware: %s", fwname);
2328
2329 /* Save the DDC file name for later use to apply once the firmware
2330 * downloading is done.
2331 */
2332 err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2333 sizeof(fwname), "ddc");
2334 if (!err) {
2335 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2336 return -EINVAL;
2337 }
2338
2339 if (fw->size < 644) {
2340 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2341 fw->size);
2342 err = -EBADF;
2343 goto done;
2344 }
2345
2346 set_bit(BTUSB_DOWNLOADING, &data->flags);
2347
2348 /* Start firmware downloading and get boot parameter */
2349 err = btintel_download_firmware(hdev, fw, &boot_param);
2350 if (err < 0) {
2351 /* When FW download fails, send Intel Reset to retry
2352 * FW download.
2353 */
2354 btintel_reset_to_bootloader(hdev);
2355 goto done;
2356 }
2357 set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2358
2359 bt_dev_info(hdev, "Waiting for firmware download to complete");
2360
2361 /* Before switching the device into operational mode and with that
2362 * booting the loaded firmware, wait for the bootloader notification
2363 * that all fragments have been successfully received.
2364 *
2365 * When the event processing receives the notification, then the
2366 * BTUSB_DOWNLOADING flag will be cleared.
2367 *
2368 * The firmware loading should not take longer than 5 seconds
2369 * and thus just timeout if that happens and fail the setup
2370 * of this device.
2371 */
2372 err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2373 TASK_INTERRUPTIBLE,
2374 msecs_to_jiffies(5000));
2375 if (err == -EINTR) {
2376 bt_dev_err(hdev, "Firmware loading interrupted");
2377 goto done;
2378 }
2379
2380 if (err) {
2381 bt_dev_err(hdev, "Firmware loading timeout");
2382 err = -ETIMEDOUT;
2383 btintel_reset_to_bootloader(hdev);
2384 goto done;
2385 }
2386
2387 if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2388 bt_dev_err(hdev, "Firmware loading failed");
2389 err = -ENOEXEC;
2390 goto done;
2391 }
2392
2393 rettime = ktime_get();
2394 delta = ktime_sub(rettime, calltime);
2395 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2396
2397 bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2398
2399 done:
2400 release_firmware(fw);
2401
2402 if (err < 0)
2403 return err;
2404
2405 calltime = ktime_get();
2406
2407 set_bit(BTUSB_BOOTING, &data->flags);
2408
2409 err = btintel_send_intel_reset(hdev, boot_param);
2410 if (err) {
2411 bt_dev_err(hdev, "Intel Soft Reset failed (%d)", err);
2412 btintel_reset_to_bootloader(hdev);
2413 return err;
2414 }
2415
2416 /* The bootloader will not indicate when the device is ready. This
2417 * is done by the operational firmware sending bootup notification.
2418 *
2419 * Booting into operational firmware should not take longer than
2420 * 1 second. However if that happens, then just fail the setup
2421 * since something went wrong.
2422 */
2423 bt_dev_info(hdev, "Waiting for device to boot");
2424
2425 err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2426 TASK_INTERRUPTIBLE,
2427 msecs_to_jiffies(1000));
2428
2429 if (err == -EINTR) {
2430 bt_dev_err(hdev, "Device boot interrupted");
2431 return -EINTR;
2432 }
2433
2434 if (err) {
2435 bt_dev_err(hdev, "Device boot timeout");
2436 btintel_reset_to_bootloader(hdev);
2437 return -ETIMEDOUT;
2438 }
2439
2440 rettime = ktime_get();
2441 delta = ktime_sub(rettime, calltime);
2442 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2443
2444 bt_dev_info(hdev, "Device booted in %llu usecs", duration);
2445
2446 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2447
2448 /* Once the device is running in operational mode, it needs to apply
2449 * the device configuration (DDC) parameters.
2450 *
2451 * The device can work without DDC parameters, so even if it fails
2452 * to load the file, no need to fail the setup.
2453 */
2454 btintel_load_ddc_config(hdev, fwname);
2455
2456 /* Set the event mask for Intel specific vendor events. This enables
2457 * a few extra events that are useful during general operation. It
2458 * does not enable any debugging related events.
2459 *
2460 * The device will function correctly without these events enabled
2461 * and thus no need to fail the setup.
2462 */
2463 btintel_set_event_mask(hdev, false);
2464
2465 /* Read the Intel version information after loading the FW */
2466 err = btintel_read_version(hdev, &ver);
2467 if (err)
2468 return err;
2469
2470 btintel_version_info(hdev, &ver);
2471
2472 return 0;
2473 }
2474
2475 static int btusb_shutdown_intel(struct hci_dev *hdev)
2476 {
2477 struct sk_buff *skb;
2478 long ret;
2479
2480 /* In the shutdown sequence where Bluetooth is turned off followed
2481 * by WiFi being turned off, turning WiFi back on causes issue with
2482 * the RF calibration.
2483 *
2484 * To ensure that any RF activity has been stopped, issue HCI Reset
2485 * command to clear all ongoing activity including advertising,
2486 * scanning etc.
2487 */
2488 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2489 if (IS_ERR(skb)) {
2490 ret = PTR_ERR(skb);
2491 bt_dev_err(hdev, "HCI reset during shutdown failed");
2492 return ret;
2493 }
2494 kfree_skb(skb);
2495
2496 /* Some platforms have an issue with BT LED when the interface is
2497 * down or BT radio is turned off, which takes 5 seconds to BT LED
2498 * goes off. This command turns off the BT LED immediately.
2499 */
2500 skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2501 if (IS_ERR(skb)) {
2502 ret = PTR_ERR(skb);
2503 bt_dev_err(hdev, "turning off Intel device LED failed");
2504 return ret;
2505 }
2506 kfree_skb(skb);
2507
2508 return 0;
2509 }
2510
2511 static int btusb_shutdown_intel_new(struct hci_dev *hdev)
2512 {
2513 struct sk_buff *skb;
2514
2515 /* Send HCI Reset to the controller to stop any BT activity which
2516 * were triggered. This will help to save power and maintain the
2517 * sync b/w Host and controller
2518 */
2519 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2520 if (IS_ERR(skb)) {
2521 bt_dev_err(hdev, "HCI reset during shutdown failed");
2522 return PTR_ERR(skb);
2523 }
2524 kfree_skb(skb);
2525
2526 return 0;
2527 }
2528
2529 #define FIRMWARE_MT7663 "mediatek/mt7663pr2h.bin"
2530 #define FIRMWARE_MT7668 "mediatek/mt7668pr2h.bin"
2531
2532 #define HCI_WMT_MAX_EVENT_SIZE 64
2533
2534 enum {
2535 BTMTK_WMT_PATCH_DWNLD = 0x1,
2536 BTMTK_WMT_FUNC_CTRL = 0x6,
2537 BTMTK_WMT_RST = 0x7,
2538 BTMTK_WMT_SEMAPHORE = 0x17,
2539 };
2540
2541 enum {
2542 BTMTK_WMT_INVALID,
2543 BTMTK_WMT_PATCH_UNDONE,
2544 BTMTK_WMT_PATCH_DONE,
2545 BTMTK_WMT_ON_UNDONE,
2546 BTMTK_WMT_ON_DONE,
2547 BTMTK_WMT_ON_PROGRESS,
2548 };
2549
2550 struct btmtk_wmt_hdr {
2551 u8 dir;
2552 u8 op;
2553 __le16 dlen;
2554 u8 flag;
2555 } __packed;
2556
2557 struct btmtk_hci_wmt_cmd {
2558 struct btmtk_wmt_hdr hdr;
2559 u8 data[256];
2560 } __packed;
2561
2562 struct btmtk_hci_wmt_evt {
2563 struct hci_event_hdr hhdr;
2564 struct btmtk_wmt_hdr whdr;
2565 } __packed;
2566
2567 struct btmtk_hci_wmt_evt_funcc {
2568 struct btmtk_hci_wmt_evt hwhdr;
2569 __be16 status;
2570 } __packed;
2571
2572 struct btmtk_tci_sleep {
2573 u8 mode;
2574 __le16 duration;
2575 __le16 host_duration;
2576 u8 host_wakeup_pin;
2577 u8 time_compensation;
2578 } __packed;
2579
2580 struct btmtk_hci_wmt_params {
2581 u8 op;
2582 u8 flag;
2583 u16 dlen;
2584 const void *data;
2585 u32 *status;
2586 };
2587
2588 static void btusb_mtk_wmt_recv(struct urb *urb)
2589 {
2590 struct hci_dev *hdev = urb->context;
2591 struct btusb_data *data = hci_get_drvdata(hdev);
2592 struct hci_event_hdr *hdr;
2593 struct sk_buff *skb;
2594 int err;
2595
2596 if (urb->status == 0 && urb->actual_length > 0) {
2597 hdev->stat.byte_rx += urb->actual_length;
2598
2599 /* WMT event shouldn't be fragmented and the size should be
2600 * less than HCI_WMT_MAX_EVENT_SIZE.
2601 */
2602 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
2603 if (!skb) {
2604 hdev->stat.err_rx++;
2605 goto err_out;
2606 }
2607
2608 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2609 skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
2610
2611 hdr = (void *)skb->data;
2612 /* Fix up the vendor event id with 0xff for vendor specific
2613 * instead of 0xe4 so that event send via monitoring socket can
2614 * be parsed properly.
2615 */
2616 hdr->evt = 0xff;
2617
2618 /* When someone waits for the WMT event, the skb is being cloned
2619 * and being processed the events from there then.
2620 */
2621 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
2622 data->evt_skb = skb_clone(skb, GFP_ATOMIC);
2623 if (!data->evt_skb)
2624 goto err_out;
2625 }
2626
2627 err = hci_recv_frame(hdev, skb);
2628 if (err < 0)
2629 goto err_free_skb;
2630
2631 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
2632 &data->flags)) {
2633 /* Barrier to sync with other CPUs */
2634 smp_mb__after_atomic();
2635 wake_up_bit(&data->flags,
2636 BTUSB_TX_WAIT_VND_EVT);
2637 }
2638 err_out:
2639 return;
2640 err_free_skb:
2641 kfree_skb(data->evt_skb);
2642 data->evt_skb = NULL;
2643 return;
2644 } else if (urb->status == -ENOENT) {
2645 /* Avoid suspend failed when usb_kill_urb */
2646 return;
2647 }
2648
2649 usb_mark_last_busy(data->udev);
2650
2651 /* The URB complete handler is still called with urb->actual_length = 0
2652 * when the event is not available, so we should keep re-submitting
2653 * URB until WMT event returns, Also, It's necessary to wait some time
2654 * between the two consecutive control URBs to relax the target device
2655 * to generate the event. Otherwise, the WMT event cannot return from
2656 * the device successfully.
2657 */
2658 udelay(100);
2659
2660 usb_anchor_urb(urb, &data->ctrl_anchor);
2661 err = usb_submit_urb(urb, GFP_ATOMIC);
2662 if (err < 0) {
2663 /* -EPERM: urb is being killed;
2664 * -ENODEV: device got disconnected
2665 */
2666 if (err != -EPERM && err != -ENODEV)
2667 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
2668 urb, -err);
2669 usb_unanchor_urb(urb);
2670 }
2671 }
2672
2673 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
2674 {
2675 struct btusb_data *data = hci_get_drvdata(hdev);
2676 struct usb_ctrlrequest *dr;
2677 unsigned char *buf;
2678 int err, size = 64;
2679 unsigned int pipe;
2680 struct urb *urb;
2681
2682 urb = usb_alloc_urb(0, GFP_KERNEL);
2683 if (!urb)
2684 return -ENOMEM;
2685
2686 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
2687 if (!dr) {
2688 usb_free_urb(urb);
2689 return -ENOMEM;
2690 }
2691
2692 dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
2693 dr->bRequest = 1;
2694 dr->wIndex = cpu_to_le16(0);
2695 dr->wValue = cpu_to_le16(48);
2696 dr->wLength = cpu_to_le16(size);
2697
2698 buf = kmalloc(size, GFP_KERNEL);
2699 if (!buf) {
2700 kfree(dr);
2701 return -ENOMEM;
2702 }
2703
2704 pipe = usb_rcvctrlpipe(data->udev, 0);
2705
2706 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
2707 buf, size, btusb_mtk_wmt_recv, hdev);
2708
2709 urb->transfer_flags |= URB_FREE_BUFFER;
2710
2711 usb_anchor_urb(urb, &data->ctrl_anchor);
2712 err = usb_submit_urb(urb, GFP_KERNEL);
2713 if (err < 0) {
2714 if (err != -EPERM && err != -ENODEV)
2715 bt_dev_err(hdev, "urb %p submission failed (%d)",
2716 urb, -err);
2717 usb_unanchor_urb(urb);
2718 }
2719
2720 usb_free_urb(urb);
2721
2722 return err;
2723 }
2724
2725 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
2726 struct btmtk_hci_wmt_params *wmt_params)
2727 {
2728 struct btusb_data *data = hci_get_drvdata(hdev);
2729 struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
2730 u32 hlen, status = BTMTK_WMT_INVALID;
2731 struct btmtk_hci_wmt_evt *wmt_evt;
2732 struct btmtk_hci_wmt_cmd wc;
2733 struct btmtk_wmt_hdr *hdr;
2734 int err;
2735
2736 /* Submit control IN URB on demand to process the WMT event */
2737 err = btusb_mtk_submit_wmt_recv_urb(hdev);
2738 if (err < 0)
2739 return err;
2740
2741 /* Send the WMT command and wait until the WMT event returns */
2742 hlen = sizeof(*hdr) + wmt_params->dlen;
2743 if (hlen > 255)
2744 return -EINVAL;
2745
2746 hdr = (struct btmtk_wmt_hdr *)&wc;
2747 hdr->dir = 1;
2748 hdr->op = wmt_params->op;
2749 hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
2750 hdr->flag = wmt_params->flag;
2751 memcpy(wc.data, wmt_params->data, wmt_params->dlen);
2752
2753 set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2754
2755 err = __hci_cmd_send(hdev, 0xfc6f, hlen, &wc);
2756
2757 if (err < 0) {
2758 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2759 return err;
2760 }
2761
2762 /* The vendor specific WMT commands are all answered by a vendor
2763 * specific event and will have the Command Status or Command
2764 * Complete as with usual HCI command flow control.
2765 *
2766 * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
2767 * state to be cleared. The driver specific event receive routine
2768 * will clear that state and with that indicate completion of the
2769 * WMT command.
2770 */
2771 err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
2772 TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
2773 if (err == -EINTR) {
2774 bt_dev_err(hdev, "Execution of wmt command interrupted");
2775 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2776 return err;
2777 }
2778
2779 if (err) {
2780 bt_dev_err(hdev, "Execution of wmt command timed out");
2781 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2782 return -ETIMEDOUT;
2783 }
2784
2785 /* Parse and handle the return WMT event */
2786 wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
2787 if (wmt_evt->whdr.op != hdr->op) {
2788 bt_dev_err(hdev, "Wrong op received %d expected %d",
2789 wmt_evt->whdr.op, hdr->op);
2790 err = -EIO;
2791 goto err_free_skb;
2792 }
2793
2794 switch (wmt_evt->whdr.op) {
2795 case BTMTK_WMT_SEMAPHORE:
2796 if (wmt_evt->whdr.flag == 2)
2797 status = BTMTK_WMT_PATCH_UNDONE;
2798 else
2799 status = BTMTK_WMT_PATCH_DONE;
2800 break;
2801 case BTMTK_WMT_FUNC_CTRL:
2802 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
2803 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
2804 status = BTMTK_WMT_ON_DONE;
2805 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
2806 status = BTMTK_WMT_ON_PROGRESS;
2807 else
2808 status = BTMTK_WMT_ON_UNDONE;
2809 break;
2810 }
2811
2812 if (wmt_params->status)
2813 *wmt_params->status = status;
2814
2815 err_free_skb:
2816 kfree_skb(data->evt_skb);
2817 data->evt_skb = NULL;
2818
2819 return err;
2820 }
2821
2822 static int btusb_mtk_setup_firmware(struct hci_dev *hdev, const char *fwname)
2823 {
2824 struct btmtk_hci_wmt_params wmt_params;
2825 const struct firmware *fw;
2826 const u8 *fw_ptr;
2827 size_t fw_size;
2828 int err, dlen;
2829 u8 flag;
2830
2831 err = request_firmware(&fw, fwname, &hdev->dev);
2832 if (err < 0) {
2833 bt_dev_err(hdev, "Failed to load firmware file (%d)", err);
2834 return err;
2835 }
2836
2837 fw_ptr = fw->data;
2838 fw_size = fw->size;
2839
2840 /* The size of patch header is 30 bytes, should be skip */
2841 if (fw_size < 30) {
2842 err = -EINVAL;
2843 goto err_release_fw;
2844 }
2845
2846 fw_size -= 30;
2847 fw_ptr += 30;
2848 flag = 1;
2849
2850 wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
2851 wmt_params.status = NULL;
2852
2853 while (fw_size > 0) {
2854 dlen = min_t(int, 250, fw_size);
2855
2856 /* Tell deivice the position in sequence */
2857 if (fw_size - dlen <= 0)
2858 flag = 3;
2859 else if (fw_size < fw->size - 30)
2860 flag = 2;
2861
2862 wmt_params.flag = flag;
2863 wmt_params.dlen = dlen;
2864 wmt_params.data = fw_ptr;
2865
2866 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2867 if (err < 0) {
2868 bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
2869 err);
2870 goto err_release_fw;
2871 }
2872
2873 fw_size -= dlen;
2874 fw_ptr += dlen;
2875 }
2876
2877 wmt_params.op = BTMTK_WMT_RST;
2878 wmt_params.flag = 4;
2879 wmt_params.dlen = 0;
2880 wmt_params.data = NULL;
2881 wmt_params.status = NULL;
2882
2883 /* Activate funciton the firmware providing to */
2884 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2885 if (err < 0) {
2886 bt_dev_err(hdev, "Failed to send wmt rst (%d)", err);
2887 goto err_release_fw;
2888 }
2889
2890 /* Wait a few moments for firmware activation done */
2891 usleep_range(10000, 12000);
2892
2893 err_release_fw:
2894 release_firmware(fw);
2895
2896 return err;
2897 }
2898
2899 static int btusb_mtk_func_query(struct hci_dev *hdev)
2900 {
2901 struct btmtk_hci_wmt_params wmt_params;
2902 int status, err;
2903 u8 param = 0;
2904
2905 /* Query whether the function is enabled */
2906 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2907 wmt_params.flag = 4;
2908 wmt_params.dlen = sizeof(param);
2909 wmt_params.data = &param;
2910 wmt_params.status = &status;
2911
2912 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2913 if (err < 0) {
2914 bt_dev_err(hdev, "Failed to query function status (%d)", err);
2915 return err;
2916 }
2917
2918 return status;
2919 }
2920
2921 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2922 {
2923 int pipe, err, size = sizeof(u32);
2924 void *buf;
2925
2926 buf = kzalloc(size, GFP_KERNEL);
2927 if (!buf)
2928 return -ENOMEM;
2929
2930 pipe = usb_rcvctrlpipe(data->udev, 0);
2931 err = usb_control_msg(data->udev, pipe, 0x63,
2932 USB_TYPE_VENDOR | USB_DIR_IN,
2933 reg >> 16, reg & 0xffff,
2934 buf, size, USB_CTRL_SET_TIMEOUT);
2935 if (err < 0)
2936 goto err_free_buf;
2937
2938 *val = get_unaligned_le32(buf);
2939
2940 err_free_buf:
2941 kfree(buf);
2942
2943 return err;
2944 }
2945
2946 static int btusb_mtk_id_get(struct btusb_data *data, u32 *id)
2947 {
2948 return btusb_mtk_reg_read(data, 0x80000008, id);
2949 }
2950
2951 static int btusb_mtk_setup(struct hci_dev *hdev)
2952 {
2953 struct btusb_data *data = hci_get_drvdata(hdev);
2954 struct btmtk_hci_wmt_params wmt_params;
2955 ktime_t calltime, delta, rettime;
2956 struct btmtk_tci_sleep tci_sleep;
2957 unsigned long long duration;
2958 struct sk_buff *skb;
2959 const char *fwname;
2960 int err, status;
2961 u32 dev_id;
2962 u8 param;
2963
2964 calltime = ktime_get();
2965
2966 err = btusb_mtk_id_get(data, &dev_id);
2967 if (err < 0) {
2968 bt_dev_err(hdev, "Failed to get device id (%d)", err);
2969 return err;
2970 }
2971
2972 switch (dev_id) {
2973 case 0x7663:
2974 fwname = FIRMWARE_MT7663;
2975 break;
2976 case 0x7668:
2977 fwname = FIRMWARE_MT7668;
2978 break;
2979 default:
2980 bt_dev_err(hdev, "Unsupported support hardware variant (%08x)",
2981 dev_id);
2982 return -ENODEV;
2983 }
2984
2985 /* Query whether the firmware is already download */
2986 wmt_params.op = BTMTK_WMT_SEMAPHORE;
2987 wmt_params.flag = 1;
2988 wmt_params.dlen = 0;
2989 wmt_params.data = NULL;
2990 wmt_params.status = &status;
2991
2992 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2993 if (err < 0) {
2994 bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
2995 return err;
2996 }
2997
2998 if (status == BTMTK_WMT_PATCH_DONE) {
2999 bt_dev_info(hdev, "firmware already downloaded");
3000 goto ignore_setup_fw;
3001 }
3002
3003 /* Setup a firmware which the device definitely requires */
3004 err = btusb_mtk_setup_firmware(hdev, fwname);
3005 if (err < 0)
3006 return err;
3007
3008 ignore_setup_fw:
3009 err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
3010 status < 0 || status != BTMTK_WMT_ON_PROGRESS,
3011 2000, 5000000);
3012 /* -ETIMEDOUT happens */
3013 if (err < 0)
3014 return err;
3015
3016 /* The other errors happen in btusb_mtk_func_query */
3017 if (status < 0)
3018 return status;
3019
3020 if (status == BTMTK_WMT_ON_DONE) {
3021 bt_dev_info(hdev, "function already on");
3022 goto ignore_func_on;
3023 }
3024
3025 /* Enable Bluetooth protocol */
3026 param = 1;
3027 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3028 wmt_params.flag = 0;
3029 wmt_params.dlen = sizeof(param);
3030 wmt_params.data = &param;
3031 wmt_params.status = NULL;
3032
3033 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3034 if (err < 0) {
3035 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3036 return err;
3037 }
3038
3039 ignore_func_on:
3040 /* Apply the low power environment setup */
3041 tci_sleep.mode = 0x5;
3042 tci_sleep.duration = cpu_to_le16(0x640);
3043 tci_sleep.host_duration = cpu_to_le16(0x640);
3044 tci_sleep.host_wakeup_pin = 0;
3045 tci_sleep.time_compensation = 0;
3046
3047 skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
3048 HCI_INIT_TIMEOUT);
3049 if (IS_ERR(skb)) {
3050 err = PTR_ERR(skb);
3051 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
3052 return err;
3053 }
3054 kfree_skb(skb);
3055
3056 rettime = ktime_get();
3057 delta = ktime_sub(rettime, calltime);
3058 duration = (unsigned long long)ktime_to_ns(delta) >> 10;
3059
3060 bt_dev_info(hdev, "Device setup in %llu usecs", duration);
3061
3062 return 0;
3063 }
3064
3065 static int btusb_mtk_shutdown(struct hci_dev *hdev)
3066 {
3067 struct btmtk_hci_wmt_params wmt_params;
3068 u8 param = 0;
3069 int err;
3070
3071 /* Disable the device */
3072 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3073 wmt_params.flag = 0;
3074 wmt_params.dlen = sizeof(param);
3075 wmt_params.data = &param;
3076 wmt_params.status = NULL;
3077
3078 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3079 if (err < 0) {
3080 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3081 return err;
3082 }
3083
3084 return 0;
3085 }
3086
3087 MODULE_FIRMWARE(FIRMWARE_MT7663);
3088 MODULE_FIRMWARE(FIRMWARE_MT7668);
3089
3090 #ifdef CONFIG_PM
3091 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
3092 static int marvell_config_oob_wake(struct hci_dev *hdev)
3093 {
3094 struct sk_buff *skb;
3095 struct btusb_data *data = hci_get_drvdata(hdev);
3096 struct device *dev = &data->udev->dev;
3097 u16 pin, gap, opcode;
3098 int ret;
3099 u8 cmd[5];
3100
3101 /* Move on if no wakeup pin specified */
3102 if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
3103 of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
3104 return 0;
3105
3106 /* Vendor specific command to configure a GPIO as wake-up pin */
3107 opcode = hci_opcode_pack(0x3F, 0x59);
3108 cmd[0] = opcode & 0xFF;
3109 cmd[1] = opcode >> 8;
3110 cmd[2] = 2; /* length of parameters that follow */
3111 cmd[3] = pin;
3112 cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
3113
3114 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
3115 if (!skb) {
3116 bt_dev_err(hdev, "%s: No memory\n", __func__);
3117 return -ENOMEM;
3118 }
3119
3120 skb_put_data(skb, cmd, sizeof(cmd));
3121 hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
3122
3123 ret = btusb_send_frame(hdev, skb);
3124 if (ret) {
3125 bt_dev_err(hdev, "%s: configuration failed\n", __func__);
3126 kfree_skb(skb);
3127 return ret;
3128 }
3129
3130 return 0;
3131 }
3132 #endif
3133
3134 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
3135 const bdaddr_t *bdaddr)
3136 {
3137 struct sk_buff *skb;
3138 u8 buf[8];
3139 long ret;
3140
3141 buf[0] = 0xfe;
3142 buf[1] = sizeof(bdaddr_t);
3143 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
3144
3145 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3146 if (IS_ERR(skb)) {
3147 ret = PTR_ERR(skb);
3148 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
3149 ret);
3150 return ret;
3151 }
3152 kfree_skb(skb);
3153
3154 return 0;
3155 }
3156
3157 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3158 const bdaddr_t *bdaddr)
3159 {
3160 struct sk_buff *skb;
3161 u8 buf[10];
3162 long ret;
3163
3164 buf[0] = 0x01;
3165 buf[1] = 0x01;
3166 buf[2] = 0x00;
3167 buf[3] = sizeof(bdaddr_t);
3168 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3169
3170 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3171 if (IS_ERR(skb)) {
3172 ret = PTR_ERR(skb);
3173 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3174 return ret;
3175 }
3176 kfree_skb(skb);
3177
3178 return 0;
3179 }
3180
3181 #define QCA_DFU_PACKET_LEN 4096
3182
3183 #define QCA_GET_TARGET_VERSION 0x09
3184 #define QCA_CHECK_STATUS 0x05
3185 #define QCA_DFU_DOWNLOAD 0x01
3186
3187 #define QCA_SYSCFG_UPDATED 0x40
3188 #define QCA_PATCH_UPDATED 0x80
3189 #define QCA_DFU_TIMEOUT 3000
3190
3191 struct qca_version {
3192 __le32 rom_version;
3193 __le32 patch_version;
3194 __le32 ram_version;
3195 __le32 ref_clock;
3196 __u8 reserved[4];
3197 } __packed;
3198
3199 struct qca_rampatch_version {
3200 __le16 rom_version;
3201 __le16 patch_version;
3202 } __packed;
3203
3204 struct qca_device_info {
3205 u32 rom_version;
3206 u8 rampatch_hdr; /* length of header in rampatch */
3207 u8 nvm_hdr; /* length of header in NVM */
3208 u8 ver_offset; /* offset of version structure in rampatch */
3209 };
3210
3211 static const struct qca_device_info qca_devices_table[] = {
3212 { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
3213 { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
3214 { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
3215 { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
3216 { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
3217 { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
3218 };
3219
3220 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
3221 void *data, u16 size)
3222 {
3223 int pipe, err;
3224 u8 *buf;
3225
3226 buf = kmalloc(size, GFP_KERNEL);
3227 if (!buf)
3228 return -ENOMEM;
3229
3230 /* Found some of USB hosts have IOT issues with ours so that we should
3231 * not wait until HCI layer is ready.
3232 */
3233 pipe = usb_rcvctrlpipe(udev, 0);
3234 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
3235 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3236 if (err < 0) {
3237 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
3238 goto done;
3239 }
3240
3241 memcpy(data, buf, size);
3242
3243 done:
3244 kfree(buf);
3245
3246 return err;
3247 }
3248
3249 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
3250 const struct firmware *firmware,
3251 size_t hdr_size)
3252 {
3253 struct btusb_data *btdata = hci_get_drvdata(hdev);
3254 struct usb_device *udev = btdata->udev;
3255 size_t count, size, sent = 0;
3256 int pipe, len, err;
3257 u8 *buf;
3258
3259 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
3260 if (!buf)
3261 return -ENOMEM;
3262
3263 count = firmware->size;
3264
3265 size = min_t(size_t, count, hdr_size);
3266 memcpy(buf, firmware->data, size);
3267
3268 /* USB patches should go down to controller through USB path
3269 * because binary format fits to go down through USB channel.
3270 * USB control path is for patching headers and USB bulk is for
3271 * patch body.
3272 */
3273 pipe = usb_sndctrlpipe(udev, 0);
3274 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
3275 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3276 if (err < 0) {
3277 bt_dev_err(hdev, "Failed to send headers (%d)", err);
3278 goto done;
3279 }
3280
3281 sent += size;
3282 count -= size;
3283
3284 while (count) {
3285 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
3286
3287 memcpy(buf, firmware->data + sent, size);
3288
3289 pipe = usb_sndbulkpipe(udev, 0x02);
3290 err = usb_bulk_msg(udev, pipe, buf, size, &len,
3291 QCA_DFU_TIMEOUT);
3292 if (err < 0) {
3293 bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
3294 sent, firmware->size, err);
3295 break;
3296 }
3297
3298 if (size != len) {
3299 bt_dev_err(hdev, "Failed to get bulk buffer");
3300 err = -EILSEQ;
3301 break;
3302 }
3303
3304 sent += size;
3305 count -= size;
3306 }
3307
3308 done:
3309 kfree(buf);
3310 return err;
3311 }
3312
3313 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
3314 struct qca_version *ver,
3315 const struct qca_device_info *info)
3316 {
3317 struct qca_rampatch_version *rver;
3318 const struct firmware *fw;
3319 u32 ver_rom, ver_patch;
3320 u16 rver_rom, rver_patch;
3321 char fwname[64];
3322 int err;
3323
3324 ver_rom = le32_to_cpu(ver->rom_version);
3325 ver_patch = le32_to_cpu(ver->patch_version);
3326
3327 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
3328
3329 err = request_firmware(&fw, fwname, &hdev->dev);
3330 if (err) {
3331 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
3332 fwname, err);
3333 return err;
3334 }
3335
3336 bt_dev_info(hdev, "using rampatch file: %s", fwname);
3337
3338 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
3339 rver_rom = le16_to_cpu(rver->rom_version);
3340 rver_patch = le16_to_cpu(rver->patch_version);
3341
3342 bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
3343 "firmware rome 0x%x build 0x%x",
3344 rver_rom, rver_patch, ver_rom, ver_patch);
3345
3346 if (rver_rom != ver_rom || rver_patch <= ver_patch) {
3347 bt_dev_err(hdev, "rampatch file version did not match with firmware");
3348 err = -EINVAL;
3349 goto done;
3350 }
3351
3352 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
3353
3354 done:
3355 release_firmware(fw);
3356
3357 return err;
3358 }
3359
3360 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
3361 struct qca_version *ver,
3362 const struct qca_device_info *info)
3363 {
3364 const struct firmware *fw;
3365 char fwname[64];
3366 int err;
3367
3368 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
3369 le32_to_cpu(ver->rom_version));
3370
3371 err = request_firmware(&fw, fwname, &hdev->dev);
3372 if (err) {
3373 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
3374 fwname, err);
3375 return err;
3376 }
3377
3378 bt_dev_info(hdev, "using NVM file: %s", fwname);
3379
3380 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
3381
3382 release_firmware(fw);
3383
3384 return err;
3385 }
3386
3387 /* identify the ROM version and check whether patches are needed */
3388 static bool btusb_qca_need_patch(struct usb_device *udev)
3389 {
3390 struct qca_version ver;
3391
3392 if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3393 sizeof(ver)) < 0)
3394 return false;
3395 /* only low ROM versions need patches */
3396 return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
3397 }
3398
3399 static int btusb_setup_qca(struct hci_dev *hdev)
3400 {
3401 struct btusb_data *btdata = hci_get_drvdata(hdev);
3402 struct usb_device *udev = btdata->udev;
3403 const struct qca_device_info *info = NULL;
3404 struct qca_version ver;
3405 u32 ver_rom;
3406 u8 status;
3407 int i, err;
3408
3409 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3410 sizeof(ver));
3411 if (err < 0)
3412 return err;
3413
3414 ver_rom = le32_to_cpu(ver.rom_version);
3415 /* Don't care about high ROM versions */
3416 if (ver_rom & ~0xffffU)
3417 return 0;
3418
3419 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
3420 if (ver_rom == qca_devices_table[i].rom_version)
3421 info = &qca_devices_table[i];
3422 }
3423 if (!info) {
3424 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
3425 return -ENODEV;
3426 }
3427
3428 err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
3429 sizeof(status));
3430 if (err < 0)
3431 return err;
3432
3433 if (!(status & QCA_PATCH_UPDATED)) {
3434 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3435 if (err < 0)
3436 return err;
3437 }
3438
3439 if (!(status & QCA_SYSCFG_UPDATED)) {
3440 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3441 if (err < 0)
3442 return err;
3443 }
3444
3445 return 0;
3446 }
3447
3448 static inline int __set_diag_interface(struct hci_dev *hdev)
3449 {
3450 struct btusb_data *data = hci_get_drvdata(hdev);
3451 struct usb_interface *intf = data->diag;
3452 int i;
3453
3454 if (!data->diag)
3455 return -ENODEV;
3456
3457 data->diag_tx_ep = NULL;
3458 data->diag_rx_ep = NULL;
3459
3460 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3461 struct usb_endpoint_descriptor *ep_desc;
3462
3463 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3464
3465 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3466 data->diag_tx_ep = ep_desc;
3467 continue;
3468 }
3469
3470 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3471 data->diag_rx_ep = ep_desc;
3472 continue;
3473 }
3474 }
3475
3476 if (!data->diag_tx_ep || !data->diag_rx_ep) {
3477 bt_dev_err(hdev, "invalid diagnostic descriptors");
3478 return -ENODEV;
3479 }
3480
3481 return 0;
3482 }
3483
3484 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
3485 {
3486 struct btusb_data *data = hci_get_drvdata(hdev);
3487 struct sk_buff *skb;
3488 struct urb *urb;
3489 unsigned int pipe;
3490
3491 if (!data->diag_tx_ep)
3492 return ERR_PTR(-ENODEV);
3493
3494 urb = usb_alloc_urb(0, GFP_KERNEL);
3495 if (!urb)
3496 return ERR_PTR(-ENOMEM);
3497
3498 skb = bt_skb_alloc(2, GFP_KERNEL);
3499 if (!skb) {
3500 usb_free_urb(urb);
3501 return ERR_PTR(-ENOMEM);
3502 }
3503
3504 skb_put_u8(skb, 0xf0);
3505 skb_put_u8(skb, enable);
3506
3507 pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
3508
3509 usb_fill_bulk_urb(urb, data->udev, pipe,
3510 skb->data, skb->len, btusb_tx_complete, skb);
3511
3512 skb->dev = (void *)hdev;
3513
3514 return urb;
3515 }
3516
3517 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
3518 {
3519 struct btusb_data *data = hci_get_drvdata(hdev);
3520 struct urb *urb;
3521
3522 if (!data->diag)
3523 return -ENODEV;
3524
3525 if (!test_bit(HCI_RUNNING, &hdev->flags))
3526 return -ENETDOWN;
3527
3528 urb = alloc_diag_urb(hdev, enable);
3529 if (IS_ERR(urb))
3530 return PTR_ERR(urb);
3531
3532 return submit_or_queue_tx_urb(hdev, urb);
3533 }
3534
3535 #ifdef CONFIG_PM
3536 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
3537 {
3538 struct btusb_data *data = priv;
3539
3540 pm_wakeup_event(&data->udev->dev, 0);
3541 pm_system_wakeup();
3542
3543 /* Disable only if not already disabled (keep it balanced) */
3544 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3545 disable_irq_nosync(irq);
3546 disable_irq_wake(irq);
3547 }
3548 return IRQ_HANDLED;
3549 }
3550
3551 static const struct of_device_id btusb_match_table[] = {
3552 { .compatible = "usb1286,204e" },
3553 { .compatible = "usbcf3,e300" }, /* QCA6174A */
3554 { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
3555 { }
3556 };
3557 MODULE_DEVICE_TABLE(of, btusb_match_table);
3558
3559 /* Use an oob wakeup pin? */
3560 static int btusb_config_oob_wake(struct hci_dev *hdev)
3561 {
3562 struct btusb_data *data = hci_get_drvdata(hdev);
3563 struct device *dev = &data->udev->dev;
3564 int irq, ret;
3565
3566 clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3567
3568 if (!of_match_device(btusb_match_table, dev))
3569 return 0;
3570
3571 /* Move on if no IRQ specified */
3572 irq = of_irq_get_byname(dev->of_node, "wakeup");
3573 if (irq <= 0) {
3574 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
3575 return 0;
3576 }
3577
3578 irq_set_status_flags(irq, IRQ_NOAUTOEN);
3579 ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
3580 0, "OOB Wake-on-BT", data);
3581 if (ret) {
3582 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
3583 return ret;
3584 }
3585
3586 ret = device_init_wakeup(dev, true);
3587 if (ret) {
3588 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
3589 return ret;
3590 }
3591
3592 data->oob_wake_irq = irq;
3593 bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
3594 return 0;
3595 }
3596 #endif
3597
3598 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
3599 {
3600 if (dmi_check_system(btusb_needs_reset_resume_table))
3601 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3602 }
3603
3604 static int btusb_probe(struct usb_interface *intf,
3605 const struct usb_device_id *id)
3606 {
3607 struct usb_endpoint_descriptor *ep_desc;
3608 struct gpio_desc *reset_gpio;
3609 struct btusb_data *data;
3610 struct hci_dev *hdev;
3611 unsigned ifnum_base;
3612 int i, err;
3613
3614 BT_DBG("intf %p id %p", intf, id);
3615
3616 /* interface numbers are hardcoded in the spec */
3617 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
3618 if (!(id->driver_info & BTUSB_IFNUM_2))
3619 return -ENODEV;
3620 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
3621 return -ENODEV;
3622 }
3623
3624 ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
3625
3626 if (!id->driver_info) {
3627 const struct usb_device_id *match;
3628
3629 match = usb_match_id(intf, blacklist_table);
3630 if (match)
3631 id = match;
3632 }
3633
3634 if (id->driver_info == BTUSB_IGNORE)
3635 return -ENODEV;
3636
3637 if (id->driver_info & BTUSB_ATH3012) {
3638 struct usb_device *udev = interface_to_usbdev(intf);
3639
3640 /* Old firmware would otherwise let ath3k driver load
3641 * patch and sysconfig files
3642 */
3643 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
3644 !btusb_qca_need_patch(udev))
3645 return -ENODEV;
3646 }
3647
3648 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
3649 if (!data)
3650 return -ENOMEM;
3651
3652 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3653 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3654
3655 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
3656 data->intr_ep = ep_desc;
3657 continue;
3658 }
3659
3660 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3661 data->bulk_tx_ep = ep_desc;
3662 continue;
3663 }
3664
3665 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3666 data->bulk_rx_ep = ep_desc;
3667 continue;
3668 }
3669 }
3670
3671 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
3672 return -ENODEV;
3673
3674 if (id->driver_info & BTUSB_AMP) {
3675 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
3676 data->cmdreq = 0x2b;
3677 } else {
3678 data->cmdreq_type = USB_TYPE_CLASS;
3679 data->cmdreq = 0x00;
3680 }
3681
3682 data->udev = interface_to_usbdev(intf);
3683 data->intf = intf;
3684
3685 INIT_WORK(&data->work, btusb_work);
3686 INIT_WORK(&data->waker, btusb_waker);
3687 init_usb_anchor(&data->deferred);
3688 init_usb_anchor(&data->tx_anchor);
3689 spin_lock_init(&data->txlock);
3690
3691 init_usb_anchor(&data->intr_anchor);
3692 init_usb_anchor(&data->bulk_anchor);
3693 init_usb_anchor(&data->isoc_anchor);
3694 init_usb_anchor(&data->diag_anchor);
3695 init_usb_anchor(&data->ctrl_anchor);
3696 spin_lock_init(&data->rxlock);
3697
3698 if (id->driver_info & BTUSB_INTEL_NEW) {
3699 data->recv_event = btusb_recv_event_intel;
3700 data->recv_bulk = btusb_recv_bulk_intel;
3701 set_bit(BTUSB_BOOTLOADER, &data->flags);
3702 } else {
3703 data->recv_event = hci_recv_frame;
3704 data->recv_bulk = btusb_recv_bulk;
3705 }
3706
3707 hdev = hci_alloc_dev();
3708 if (!hdev)
3709 return -ENOMEM;
3710
3711 hdev->bus = HCI_USB;
3712 hci_set_drvdata(hdev, data);
3713
3714 if (id->driver_info & BTUSB_AMP)
3715 hdev->dev_type = HCI_AMP;
3716 else
3717 hdev->dev_type = HCI_PRIMARY;
3718
3719 data->hdev = hdev;
3720
3721 SET_HCIDEV_DEV(hdev, &intf->dev);
3722
3723 reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
3724 GPIOD_OUT_LOW);
3725 if (IS_ERR(reset_gpio)) {
3726 err = PTR_ERR(reset_gpio);
3727 goto out_free_dev;
3728 } else if (reset_gpio) {
3729 data->reset_gpio = reset_gpio;
3730 }
3731
3732 hdev->open = btusb_open;
3733 hdev->close = btusb_close;
3734 hdev->flush = btusb_flush;
3735 hdev->send = btusb_send_frame;
3736 hdev->notify = btusb_notify;
3737
3738 #ifdef CONFIG_PM
3739 err = btusb_config_oob_wake(hdev);
3740 if (err)
3741 goto out_free_dev;
3742
3743 /* Marvell devices may need a specific chip configuration */
3744 if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
3745 err = marvell_config_oob_wake(hdev);
3746 if (err)
3747 goto out_free_dev;
3748 }
3749 #endif
3750 if (id->driver_info & BTUSB_CW6622)
3751 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3752
3753 if (id->driver_info & BTUSB_BCM2045)
3754 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3755
3756 if (id->driver_info & BTUSB_BCM92035)
3757 hdev->setup = btusb_setup_bcm92035;
3758
3759 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
3760 (id->driver_info & BTUSB_BCM_PATCHRAM)) {
3761 hdev->manufacturer = 15;
3762 hdev->setup = btbcm_setup_patchram;
3763 hdev->set_diag = btusb_bcm_set_diag;
3764 hdev->set_bdaddr = btbcm_set_bdaddr;
3765
3766 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3767 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3768 }
3769
3770 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
3771 (id->driver_info & BTUSB_BCM_APPLE)) {
3772 hdev->manufacturer = 15;
3773 hdev->setup = btbcm_setup_apple;
3774 hdev->set_diag = btusb_bcm_set_diag;
3775
3776 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3777 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3778 }
3779
3780 if (id->driver_info & BTUSB_INTEL) {
3781 hdev->manufacturer = 2;
3782 hdev->setup = btusb_setup_intel;
3783 hdev->shutdown = btusb_shutdown_intel;
3784 hdev->set_diag = btintel_set_diag_mfg;
3785 hdev->set_bdaddr = btintel_set_bdaddr;
3786 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3787 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3788 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3789 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3790 }
3791
3792 if (id->driver_info & BTUSB_INTEL_NEW) {
3793 hdev->manufacturer = 2;
3794 hdev->send = btusb_send_frame_intel;
3795 hdev->setup = btusb_setup_intel_new;
3796 hdev->shutdown = btusb_shutdown_intel_new;
3797 hdev->hw_error = btintel_hw_error;
3798 hdev->set_diag = btintel_set_diag;
3799 hdev->set_bdaddr = btintel_set_bdaddr;
3800 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3801 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3802 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3803 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3804 }
3805
3806 if (id->driver_info & BTUSB_MARVELL)
3807 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3808
3809 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) &&
3810 (id->driver_info & BTUSB_MEDIATEK)) {
3811 hdev->setup = btusb_mtk_setup;
3812 hdev->shutdown = btusb_mtk_shutdown;
3813 hdev->manufacturer = 70;
3814 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
3815 }
3816
3817 if (id->driver_info & BTUSB_SWAVE) {
3818 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3819 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3820 }
3821
3822 if (id->driver_info & BTUSB_INTEL_BOOT) {
3823 hdev->manufacturer = 2;
3824 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3825 }
3826
3827 if (id->driver_info & BTUSB_ATH3012) {
3828 data->setup_on_usb = btusb_setup_qca;
3829 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3830 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3831 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3832 }
3833
3834 if (id->driver_info & BTUSB_QCA_ROME) {
3835 data->setup_on_usb = btusb_setup_qca;
3836 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3837 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3838 btusb_check_needs_reset_resume(intf);
3839 }
3840
3841 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) &&
3842 (id->driver_info & BTUSB_REALTEK)) {
3843 hdev->setup = btrtl_setup_realtek;
3844 hdev->shutdown = btrtl_shutdown_realtek;
3845 hdev->cmd_timeout = btusb_rtl_cmd_timeout;
3846
3847 /* Realtek devices lose their updated firmware over global
3848 * suspend that means host doesn't send SET_FEATURE
3849 * (DEVICE_REMOTE_WAKEUP)
3850 */
3851 set_bit(BTUSB_WAKEUP_DISABLE, &data->flags);
3852
3853 err = usb_autopm_get_interface(intf);
3854 if (err < 0)
3855 goto out_free_dev;
3856 }
3857
3858 if (id->driver_info & BTUSB_AMP) {
3859 /* AMP controllers do not support SCO packets */
3860 data->isoc = NULL;
3861 } else {
3862 /* Interface orders are hardcoded in the specification */
3863 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
3864 data->isoc_ifnum = ifnum_base + 1;
3865 }
3866
3867 if (!reset)
3868 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3869
3870 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3871 if (!disable_scofix)
3872 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3873 }
3874
3875 if (id->driver_info & BTUSB_BROKEN_ISOC)
3876 data->isoc = NULL;
3877
3878 if (id->driver_info & BTUSB_WIDEBAND_SPEECH)
3879 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
3880
3881 if (id->driver_info & BTUSB_DIGIANSWER) {
3882 data->cmdreq_type = USB_TYPE_VENDOR;
3883 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3884 }
3885
3886 if (id->driver_info & BTUSB_CSR) {
3887 struct usb_device *udev = data->udev;
3888 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3889
3890 /* Old firmware would otherwise execute USB reset */
3891 if (bcdDevice < 0x117)
3892 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3893
3894 /* Fake CSR devices with broken commands */
3895 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3896 hdev->setup = btusb_setup_csr;
3897
3898 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3899 }
3900
3901 if (id->driver_info & BTUSB_SNIFFER) {
3902 struct usb_device *udev = data->udev;
3903
3904 /* New sniffer firmware has crippled HCI interface */
3905 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3906 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3907 }
3908
3909 if (id->driver_info & BTUSB_INTEL_BOOT) {
3910 /* A bug in the bootloader causes that interrupt interface is
3911 * only enabled after receiving SetInterface(0, AltSetting=0).
3912 */
3913 err = usb_set_interface(data->udev, 0, 0);
3914 if (err < 0) {
3915 BT_ERR("failed to set interface 0, alt 0 %d", err);
3916 goto out_free_dev;
3917 }
3918 }
3919
3920 if (data->isoc) {
3921 err = usb_driver_claim_interface(&btusb_driver,
3922 data->isoc, data);
3923 if (err < 0)
3924 goto out_free_dev;
3925 }
3926
3927 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) {
3928 if (!usb_driver_claim_interface(&btusb_driver,
3929 data->diag, data))
3930 __set_diag_interface(hdev);
3931 else
3932 data->diag = NULL;
3933 }
3934
3935 if (enable_autosuspend)
3936 usb_enable_autosuspend(data->udev);
3937
3938 err = hci_register_dev(hdev);
3939 if (err < 0)
3940 goto out_free_dev;
3941
3942 usb_set_intfdata(intf, data);
3943
3944 return 0;
3945
3946 out_free_dev:
3947 if (data->reset_gpio)
3948 gpiod_put(data->reset_gpio);
3949 hci_free_dev(hdev);
3950 return err;
3951 }
3952
3953 static void btusb_disconnect(struct usb_interface *intf)
3954 {
3955 struct btusb_data *data = usb_get_intfdata(intf);
3956 struct hci_dev *hdev;
3957
3958 BT_DBG("intf %p", intf);
3959
3960 if (!data)
3961 return;
3962
3963 hdev = data->hdev;
3964 usb_set_intfdata(data->intf, NULL);
3965
3966 if (data->isoc)
3967 usb_set_intfdata(data->isoc, NULL);
3968
3969 if (data->diag)
3970 usb_set_intfdata(data->diag, NULL);
3971
3972 hci_unregister_dev(hdev);
3973
3974 if (intf == data->intf) {
3975 if (data->isoc)
3976 usb_driver_release_interface(&btusb_driver, data->isoc);
3977 if (data->diag)
3978 usb_driver_release_interface(&btusb_driver, data->diag);
3979 } else if (intf == data->isoc) {
3980 if (data->diag)
3981 usb_driver_release_interface(&btusb_driver, data->diag);
3982 usb_driver_release_interface(&btusb_driver, data->intf);
3983 } else if (intf == data->diag) {
3984 usb_driver_release_interface(&btusb_driver, data->intf);
3985 if (data->isoc)
3986 usb_driver_release_interface(&btusb_driver, data->isoc);
3987 }
3988
3989 if (data->oob_wake_irq)
3990 device_init_wakeup(&data->udev->dev, false);
3991
3992 if (data->reset_gpio)
3993 gpiod_put(data->reset_gpio);
3994
3995 hci_free_dev(hdev);
3996 }
3997
3998 #ifdef CONFIG_PM
3999 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
4000 {
4001 struct btusb_data *data = usb_get_intfdata(intf);
4002
4003 BT_DBG("intf %p", intf);
4004
4005 if (data->suspend_count++)
4006 return 0;
4007
4008 spin_lock_irq(&data->txlock);
4009 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
4010 set_bit(BTUSB_SUSPENDING, &data->flags);
4011 spin_unlock_irq(&data->txlock);
4012 } else {
4013 spin_unlock_irq(&data->txlock);
4014 data->suspend_count--;
4015 return -EBUSY;
4016 }
4017
4018 cancel_work_sync(&data->work);
4019
4020 btusb_stop_traffic(data);
4021 usb_kill_anchored_urbs(&data->tx_anchor);
4022
4023 if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
4024 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4025 enable_irq_wake(data->oob_wake_irq);
4026 enable_irq(data->oob_wake_irq);
4027 }
4028
4029 /* For global suspend, Realtek devices lose the loaded fw
4030 * in them. But for autosuspend, firmware should remain.
4031 * Actually, it depends on whether the usb host sends
4032 * set feature (enable wakeup) or not.
4033 */
4034 if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags)) {
4035 if (PMSG_IS_AUTO(message) &&
4036 device_can_wakeup(&data->udev->dev))
4037 data->udev->do_remote_wakeup = 1;
4038 else if (!PMSG_IS_AUTO(message))
4039 data->udev->reset_resume = 1;
4040 }
4041
4042 return 0;
4043 }
4044
4045 static void play_deferred(struct btusb_data *data)
4046 {
4047 struct urb *urb;
4048 int err;
4049
4050 while ((urb = usb_get_from_anchor(&data->deferred))) {
4051 usb_anchor_urb(urb, &data->tx_anchor);
4052
4053 err = usb_submit_urb(urb, GFP_ATOMIC);
4054 if (err < 0) {
4055 if (err != -EPERM && err != -ENODEV)
4056 BT_ERR("%s urb %p submission failed (%d)",
4057 data->hdev->name, urb, -err);
4058 kfree(urb->setup_packet);
4059 usb_unanchor_urb(urb);
4060 usb_free_urb(urb);
4061 break;
4062 }
4063
4064 data->tx_in_flight++;
4065 usb_free_urb(urb);
4066 }
4067
4068 /* Cleanup the rest deferred urbs. */
4069 while ((urb = usb_get_from_anchor(&data->deferred))) {
4070 kfree(urb->setup_packet);
4071 usb_free_urb(urb);
4072 }
4073 }
4074
4075 static int btusb_resume(struct usb_interface *intf)
4076 {
4077 struct btusb_data *data = usb_get_intfdata(intf);
4078 struct hci_dev *hdev = data->hdev;
4079 int err = 0;
4080
4081 BT_DBG("intf %p", intf);
4082
4083 if (--data->suspend_count)
4084 return 0;
4085
4086 /* Disable only if not already disabled (keep it balanced) */
4087 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4088 disable_irq(data->oob_wake_irq);
4089 disable_irq_wake(data->oob_wake_irq);
4090 }
4091
4092 if (!test_bit(HCI_RUNNING, &hdev->flags))
4093 goto done;
4094
4095 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4096 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4097 if (err < 0) {
4098 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
4099 goto failed;
4100 }
4101 }
4102
4103 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
4104 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
4105 if (err < 0) {
4106 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
4107 goto failed;
4108 }
4109
4110 btusb_submit_bulk_urb(hdev, GFP_NOIO);
4111 }
4112
4113 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
4114 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
4115 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
4116 else
4117 btusb_submit_isoc_urb(hdev, GFP_NOIO);
4118 }
4119
4120 spin_lock_irq(&data->txlock);
4121 play_deferred(data);
4122 clear_bit(BTUSB_SUSPENDING, &data->flags);
4123 spin_unlock_irq(&data->txlock);
4124 schedule_work(&data->work);
4125
4126 return 0;
4127
4128 failed:
4129 usb_scuttle_anchored_urbs(&data->deferred);
4130 done:
4131 spin_lock_irq(&data->txlock);
4132 clear_bit(BTUSB_SUSPENDING, &data->flags);
4133 spin_unlock_irq(&data->txlock);
4134
4135 return err;
4136 }
4137 #endif
4138
4139 static struct usb_driver btusb_driver = {
4140 .name = "btusb",
4141 .probe = btusb_probe,
4142 .disconnect = btusb_disconnect,
4143 #ifdef CONFIG_PM
4144 .suspend = btusb_suspend,
4145 .resume = btusb_resume,
4146 #endif
4147 .id_table = btusb_table,
4148 .supports_autosuspend = 1,
4149 .disable_hub_initiated_lpm = 1,
4150 };
4151
4152 module_usb_driver(btusb_driver);
4153
4154 module_param(disable_scofix, bool, 0644);
4155 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
4156
4157 module_param(force_scofix, bool, 0644);
4158 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
4159
4160 module_param(enable_autosuspend, bool, 0644);
4161 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
4162
4163 module_param(reset, bool, 0644);
4164 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
4165
4166 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
4167 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
4168 MODULE_VERSION(VERSION);
4169 MODULE_LICENSE("GPL");
Linux with added FPC-III support