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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
[mirror_ubuntu-jammy-kernel.git] / drivers / bluetooth / btusb.c
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/of_device.h>
15 #include <linux/of_irq.h>
16 #include <linux/suspend.h>
17 #include <linux/gpio/consumer.h>
18 #include <asm/unaligned.h>
19
20 #include <net/bluetooth/bluetooth.h>
21 #include <net/bluetooth/hci_core.h>
22
23 #include "btintel.h"
24 #include "btbcm.h"
25 #include "btrtl.h"
26
27 #define VERSION "0.8"
28
29 static bool disable_scofix;
30 static bool force_scofix;
31 static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND);
32
33 static bool reset = true;
34
35 static struct usb_driver btusb_driver;
36
37 #define BTUSB_IGNORE 0x01
38 #define BTUSB_DIGIANSWER 0x02
39 #define BTUSB_CSR 0x04
40 #define BTUSB_SNIFFER 0x08
41 #define BTUSB_BCM92035 0x10
42 #define BTUSB_BROKEN_ISOC 0x20
43 #define BTUSB_WRONG_SCO_MTU 0x40
44 #define BTUSB_ATH3012 0x80
45 #define BTUSB_INTEL 0x100
46 #define BTUSB_INTEL_BOOT 0x200
47 #define BTUSB_BCM_PATCHRAM 0x400
48 #define BTUSB_MARVELL 0x800
49 #define BTUSB_SWAVE 0x1000
50 #define BTUSB_INTEL_NEW 0x2000
51 #define BTUSB_AMP 0x4000
52 #define BTUSB_QCA_ROME 0x8000
53 #define BTUSB_BCM_APPLE 0x10000
54 #define BTUSB_REALTEK 0x20000
55 #define BTUSB_BCM2045 0x40000
56 #define BTUSB_IFNUM_2 0x80000
57 #define BTUSB_CW6622 0x100000
58
59 static const struct usb_device_id btusb_table[] = {
60 /* Generic Bluetooth USB device */
61 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
62
63 /* Generic Bluetooth AMP device */
64 { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
65
66 /* Generic Bluetooth USB interface */
67 { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
68
69 /* Apple-specific (Broadcom) devices */
70 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
71 .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
72
73 /* MediaTek MT76x0E */
74 { USB_DEVICE(0x0e8d, 0x763f) },
75
76 /* Broadcom SoftSailing reporting vendor specific */
77 { USB_DEVICE(0x0a5c, 0x21e1) },
78
79 /* Apple MacBookPro 7,1 */
80 { USB_DEVICE(0x05ac, 0x8213) },
81
82 /* Apple iMac11,1 */
83 { USB_DEVICE(0x05ac, 0x8215) },
84
85 /* Apple MacBookPro6,2 */
86 { USB_DEVICE(0x05ac, 0x8218) },
87
88 /* Apple MacBookAir3,1, MacBookAir3,2 */
89 { USB_DEVICE(0x05ac, 0x821b) },
90
91 /* Apple MacBookAir4,1 */
92 { USB_DEVICE(0x05ac, 0x821f) },
93
94 /* Apple MacBookPro8,2 */
95 { USB_DEVICE(0x05ac, 0x821a) },
96
97 /* Apple MacMini5,1 */
98 { USB_DEVICE(0x05ac, 0x8281) },
99
100 /* AVM BlueFRITZ! USB v2.0 */
101 { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
102
103 /* Bluetooth Ultraport Module from IBM */
104 { USB_DEVICE(0x04bf, 0x030a) },
105
106 /* ALPS Modules with non-standard id */
107 { USB_DEVICE(0x044e, 0x3001) },
108 { USB_DEVICE(0x044e, 0x3002) },
109
110 /* Ericsson with non-standard id */
111 { USB_DEVICE(0x0bdb, 0x1002) },
112
113 /* Canyon CN-BTU1 with HID interfaces */
114 { USB_DEVICE(0x0c10, 0x0000) },
115
116 /* Broadcom BCM20702A0 */
117 { USB_DEVICE(0x413c, 0x8197) },
118
119 /* Broadcom BCM20702B0 (Dynex/Insignia) */
120 { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
121
122 /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
123 { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01),
124 .driver_info = BTUSB_BCM_PATCHRAM },
125
126 /* Broadcom BCM920703 (HTC Vive) */
127 { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
128 .driver_info = BTUSB_BCM_PATCHRAM },
129
130 /* Foxconn - Hon Hai */
131 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
132 .driver_info = BTUSB_BCM_PATCHRAM },
133
134 /* Lite-On Technology - Broadcom based */
135 { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
136 .driver_info = BTUSB_BCM_PATCHRAM },
137
138 /* Broadcom devices with vendor specific id */
139 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
140 .driver_info = BTUSB_BCM_PATCHRAM },
141
142 /* ASUSTek Computer - Broadcom based */
143 { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
144 .driver_info = BTUSB_BCM_PATCHRAM },
145
146 /* Belkin F8065bf - Broadcom based */
147 { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
148 .driver_info = BTUSB_BCM_PATCHRAM },
149
150 /* IMC Networks - Broadcom based */
151 { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
152 .driver_info = BTUSB_BCM_PATCHRAM },
153
154 /* Dell Computer - Broadcom based */
155 { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
156 .driver_info = BTUSB_BCM_PATCHRAM },
157
158 /* Toshiba Corp - Broadcom based */
159 { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
160 .driver_info = BTUSB_BCM_PATCHRAM },
161
162 /* Intel Bluetooth USB Bootloader (RAM module) */
163 { USB_DEVICE(0x8087, 0x0a5a),
164 .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
165
166 { } /* Terminating entry */
167 };
168
169 MODULE_DEVICE_TABLE(usb, btusb_table);
170
171 static const struct usb_device_id blacklist_table[] = {
172 /* CSR BlueCore devices */
173 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
174
175 /* Broadcom BCM2033 without firmware */
176 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
177
178 /* Broadcom BCM2045 devices */
179 { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
180
181 /* Atheros 3011 with sflash firmware */
182 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
183 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
184 { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
185 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
186 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
187 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
188 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
189
190 /* Atheros AR9285 Malbec with sflash firmware */
191 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
192
193 /* Atheros 3012 with sflash firmware */
194 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
195 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
196 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
197 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
198 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
199 { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
200 { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
201 { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
202 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
203 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
204 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
205 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
206 { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
207 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
208 { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
209 { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
210 { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
211 { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
212 { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
213 { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
214 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
215 { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
216 { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
217 { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
218 { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
219 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
220 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
221 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
222 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
223 { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
224 { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
225 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
226 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
227 { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
228 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
229 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
230 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
231 { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
232 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
233 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
234 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
235 { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
236 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
237 { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
238 { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
239 { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
240 { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
241 { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
242 { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
243 { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
244
245 /* Atheros AR5BBU12 with sflash firmware */
246 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
247
248 /* Atheros AR5BBU12 with sflash firmware */
249 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
250 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
251
252 /* QCA ROME chipset */
253 { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME },
254 { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
255 { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME },
256 { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME },
257 { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
258 { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME },
259 { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
260 { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME },
261 { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME },
262 { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME },
263 { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME },
264 { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME },
265 { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME },
266 { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME },
267 { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME },
268
269 /* Broadcom BCM2035 */
270 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
271 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
272 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
273
274 /* Broadcom BCM2045 */
275 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
276 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
277
278 /* IBM/Lenovo ThinkPad with Broadcom chip */
279 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
280 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
281
282 /* HP laptop with Broadcom chip */
283 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
284
285 /* Dell laptop with Broadcom chip */
286 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
287
288 /* Dell Wireless 370 and 410 devices */
289 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
290 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
291
292 /* Belkin F8T012 and F8T013 devices */
293 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
294 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
295
296 /* Asus WL-BTD202 device */
297 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
298
299 /* Kensington Bluetooth USB adapter */
300 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
301
302 /* RTX Telecom based adapters with buggy SCO support */
303 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
304 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
305
306 /* CONWISE Technology based adapters with buggy SCO support */
307 { USB_DEVICE(0x0e5e, 0x6622),
308 .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
309
310 /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
311 { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
312
313 /* Digianswer devices */
314 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
315 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
316
317 /* CSR BlueCore Bluetooth Sniffer */
318 { USB_DEVICE(0x0a12, 0x0002),
319 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
320
321 /* Frontline ComProbe Bluetooth Sniffer */
322 { USB_DEVICE(0x16d3, 0x0002),
323 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
324
325 /* Marvell Bluetooth devices */
326 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
327 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
328 { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
329
330 /* Intel Bluetooth devices */
331 { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW },
332 { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_NEW },
333 { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_NEW },
334 { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
335 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
336 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
337 { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
338 { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL },
339 { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW },
340
341 /* Other Intel Bluetooth devices */
342 { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
343 .driver_info = BTUSB_IGNORE },
344
345 /* Realtek Bluetooth devices */
346 { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
347 .driver_info = BTUSB_REALTEK },
348
349 /* Additional Realtek 8723AE Bluetooth devices */
350 { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
351 { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
352
353 /* Additional Realtek 8723BE Bluetooth devices */
354 { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
355 { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
356 { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
357 { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
358 { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
359 { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
360
361 /* Additional Realtek 8723BU Bluetooth devices */
362 { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
363
364 /* Additional Realtek 8723DE Bluetooth devices */
365 { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
366 { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
367
368 /* Additional Realtek 8821AE Bluetooth devices */
369 { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
370 { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
371 { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
372 { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
373 { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
374
375 /* Additional Realtek 8822BE Bluetooth devices */
376 { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
377 { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
378
379 /* Silicon Wave based devices */
380 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
381
382 { } /* Terminating entry */
383 };
384
385 /* The Bluetooth USB module build into some devices needs to be reset on resume,
386 * this is a problem with the platform (likely shutting off all power) not with
387 * the module itself. So we use a DMI list to match known broken platforms.
388 */
389 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
390 {
391 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
392 .matches = {
393 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
394 DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
395 },
396 },
397 {
398 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
399 .matches = {
400 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
401 DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
402 },
403 },
404 {
405 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
406 .matches = {
407 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
408 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
409 },
410 },
411 {}
412 };
413
414 #define BTUSB_MAX_ISOC_FRAMES 10
415
416 #define BTUSB_INTR_RUNNING 0
417 #define BTUSB_BULK_RUNNING 1
418 #define BTUSB_ISOC_RUNNING 2
419 #define BTUSB_SUSPENDING 3
420 #define BTUSB_DID_ISO_RESUME 4
421 #define BTUSB_BOOTLOADER 5
422 #define BTUSB_DOWNLOADING 6
423 #define BTUSB_FIRMWARE_LOADED 7
424 #define BTUSB_FIRMWARE_FAILED 8
425 #define BTUSB_BOOTING 9
426 #define BTUSB_DIAG_RUNNING 10
427 #define BTUSB_OOB_WAKE_ENABLED 11
428 #define BTUSB_HW_RESET_ACTIVE 12
429
430 struct btusb_data {
431 struct hci_dev *hdev;
432 struct usb_device *udev;
433 struct usb_interface *intf;
434 struct usb_interface *isoc;
435 struct usb_interface *diag;
436 unsigned isoc_ifnum;
437
438 unsigned long flags;
439
440 struct work_struct work;
441 struct work_struct waker;
442
443 struct usb_anchor deferred;
444 struct usb_anchor tx_anchor;
445 int tx_in_flight;
446 spinlock_t txlock;
447
448 struct usb_anchor intr_anchor;
449 struct usb_anchor bulk_anchor;
450 struct usb_anchor isoc_anchor;
451 struct usb_anchor diag_anchor;
452 spinlock_t rxlock;
453
454 struct sk_buff *evt_skb;
455 struct sk_buff *acl_skb;
456 struct sk_buff *sco_skb;
457
458 struct usb_endpoint_descriptor *intr_ep;
459 struct usb_endpoint_descriptor *bulk_tx_ep;
460 struct usb_endpoint_descriptor *bulk_rx_ep;
461 struct usb_endpoint_descriptor *isoc_tx_ep;
462 struct usb_endpoint_descriptor *isoc_rx_ep;
463 struct usb_endpoint_descriptor *diag_tx_ep;
464 struct usb_endpoint_descriptor *diag_rx_ep;
465
466 struct gpio_desc *reset_gpio;
467
468 __u8 cmdreq_type;
469 __u8 cmdreq;
470
471 unsigned int sco_num;
472 int isoc_altsetting;
473 int suspend_count;
474
475 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
476 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
477
478 int (*setup_on_usb)(struct hci_dev *hdev);
479
480 int oob_wake_irq; /* irq for out-of-band wake-on-bt */
481 unsigned cmd_timeout_cnt;
482 };
483
484
485 static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
486 {
487 struct btusb_data *data = hci_get_drvdata(hdev);
488 struct gpio_desc *reset_gpio = data->reset_gpio;
489
490 if (++data->cmd_timeout_cnt < 5)
491 return;
492
493 if (!reset_gpio) {
494 bt_dev_err(hdev, "No way to reset. Ignoring and continuing");
495 return;
496 }
497
498 /*
499 * Toggle the hard reset line if the platform provides one. The reset
500 * is going to yank the device off the USB and then replug. So doing
501 * once is enough. The cleanup is handled correctly on the way out
502 * (standard USB disconnect), and the new device is detected cleanly
503 * and bound to the driver again like it should be.
504 */
505 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
506 bt_dev_err(hdev, "last reset failed? Not resetting again");
507 return;
508 }
509
510 bt_dev_err(hdev, "Initiating HW reset via gpio");
511 gpiod_set_value_cansleep(reset_gpio, 1);
512 msleep(100);
513 gpiod_set_value_cansleep(reset_gpio, 0);
514 }
515
516 static inline void btusb_free_frags(struct btusb_data *data)
517 {
518 unsigned long flags;
519
520 spin_lock_irqsave(&data->rxlock, flags);
521
522 kfree_skb(data->evt_skb);
523 data->evt_skb = NULL;
524
525 kfree_skb(data->acl_skb);
526 data->acl_skb = NULL;
527
528 kfree_skb(data->sco_skb);
529 data->sco_skb = NULL;
530
531 spin_unlock_irqrestore(&data->rxlock, flags);
532 }
533
534 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
535 {
536 struct sk_buff *skb;
537 unsigned long flags;
538 int err = 0;
539
540 spin_lock_irqsave(&data->rxlock, flags);
541 skb = data->evt_skb;
542
543 while (count) {
544 int len;
545
546 if (!skb) {
547 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
548 if (!skb) {
549 err = -ENOMEM;
550 break;
551 }
552
553 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
554 hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
555 }
556
557 len = min_t(uint, hci_skb_expect(skb), count);
558 skb_put_data(skb, buffer, len);
559
560 count -= len;
561 buffer += len;
562 hci_skb_expect(skb) -= len;
563
564 if (skb->len == HCI_EVENT_HDR_SIZE) {
565 /* Complete event header */
566 hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
567
568 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
569 kfree_skb(skb);
570 skb = NULL;
571
572 err = -EILSEQ;
573 break;
574 }
575 }
576
577 if (!hci_skb_expect(skb)) {
578 /* Complete frame */
579 data->recv_event(data->hdev, skb);
580 skb = NULL;
581 }
582 }
583
584 data->evt_skb = skb;
585 spin_unlock_irqrestore(&data->rxlock, flags);
586
587 return err;
588 }
589
590 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
591 {
592 struct sk_buff *skb;
593 unsigned long flags;
594 int err = 0;
595
596 spin_lock_irqsave(&data->rxlock, flags);
597 skb = data->acl_skb;
598
599 while (count) {
600 int len;
601
602 if (!skb) {
603 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
604 if (!skb) {
605 err = -ENOMEM;
606 break;
607 }
608
609 hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
610 hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
611 }
612
613 len = min_t(uint, hci_skb_expect(skb), count);
614 skb_put_data(skb, buffer, len);
615
616 count -= len;
617 buffer += len;
618 hci_skb_expect(skb) -= len;
619
620 if (skb->len == HCI_ACL_HDR_SIZE) {
621 __le16 dlen = hci_acl_hdr(skb)->dlen;
622
623 /* Complete ACL header */
624 hci_skb_expect(skb) = __le16_to_cpu(dlen);
625
626 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
627 kfree_skb(skb);
628 skb = NULL;
629
630 err = -EILSEQ;
631 break;
632 }
633 }
634
635 if (!hci_skb_expect(skb)) {
636 /* Complete frame */
637 hci_recv_frame(data->hdev, skb);
638 skb = NULL;
639 }
640 }
641
642 data->acl_skb = skb;
643 spin_unlock_irqrestore(&data->rxlock, flags);
644
645 return err;
646 }
647
648 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
649 {
650 struct sk_buff *skb;
651 unsigned long flags;
652 int err = 0;
653
654 spin_lock_irqsave(&data->rxlock, flags);
655 skb = data->sco_skb;
656
657 while (count) {
658 int len;
659
660 if (!skb) {
661 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
662 if (!skb) {
663 err = -ENOMEM;
664 break;
665 }
666
667 hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
668 hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
669 }
670
671 len = min_t(uint, hci_skb_expect(skb), count);
672 skb_put_data(skb, buffer, len);
673
674 count -= len;
675 buffer += len;
676 hci_skb_expect(skb) -= len;
677
678 if (skb->len == HCI_SCO_HDR_SIZE) {
679 /* Complete SCO header */
680 hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
681
682 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
683 kfree_skb(skb);
684 skb = NULL;
685
686 err = -EILSEQ;
687 break;
688 }
689 }
690
691 if (!hci_skb_expect(skb)) {
692 /* Complete frame */
693 hci_recv_frame(data->hdev, skb);
694 skb = NULL;
695 }
696 }
697
698 data->sco_skb = skb;
699 spin_unlock_irqrestore(&data->rxlock, flags);
700
701 return err;
702 }
703
704 static void btusb_intr_complete(struct urb *urb)
705 {
706 struct hci_dev *hdev = urb->context;
707 struct btusb_data *data = hci_get_drvdata(hdev);
708 int err;
709
710 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
711 urb->actual_length);
712
713 if (!test_bit(HCI_RUNNING, &hdev->flags))
714 return;
715
716 if (urb->status == 0) {
717 hdev->stat.byte_rx += urb->actual_length;
718
719 if (btusb_recv_intr(data, urb->transfer_buffer,
720 urb->actual_length) < 0) {
721 bt_dev_err(hdev, "corrupted event packet");
722 hdev->stat.err_rx++;
723 }
724 } else if (urb->status == -ENOENT) {
725 /* Avoid suspend failed when usb_kill_urb */
726 return;
727 }
728
729 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
730 return;
731
732 usb_mark_last_busy(data->udev);
733 usb_anchor_urb(urb, &data->intr_anchor);
734
735 err = usb_submit_urb(urb, GFP_ATOMIC);
736 if (err < 0) {
737 /* -EPERM: urb is being killed;
738 * -ENODEV: device got disconnected
739 */
740 if (err != -EPERM && err != -ENODEV)
741 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
742 urb, -err);
743 usb_unanchor_urb(urb);
744 }
745 }
746
747 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
748 {
749 struct btusb_data *data = hci_get_drvdata(hdev);
750 struct urb *urb;
751 unsigned char *buf;
752 unsigned int pipe;
753 int err, size;
754
755 BT_DBG("%s", hdev->name);
756
757 if (!data->intr_ep)
758 return -ENODEV;
759
760 urb = usb_alloc_urb(0, mem_flags);
761 if (!urb)
762 return -ENOMEM;
763
764 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
765
766 buf = kmalloc(size, mem_flags);
767 if (!buf) {
768 usb_free_urb(urb);
769 return -ENOMEM;
770 }
771
772 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
773
774 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
775 btusb_intr_complete, hdev, data->intr_ep->bInterval);
776
777 urb->transfer_flags |= URB_FREE_BUFFER;
778
779 usb_anchor_urb(urb, &data->intr_anchor);
780
781 err = usb_submit_urb(urb, mem_flags);
782 if (err < 0) {
783 if (err != -EPERM && err != -ENODEV)
784 bt_dev_err(hdev, "urb %p submission failed (%d)",
785 urb, -err);
786 usb_unanchor_urb(urb);
787 }
788
789 usb_free_urb(urb);
790
791 return err;
792 }
793
794 static void btusb_bulk_complete(struct urb *urb)
795 {
796 struct hci_dev *hdev = urb->context;
797 struct btusb_data *data = hci_get_drvdata(hdev);
798 int err;
799
800 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
801 urb->actual_length);
802
803 if (!test_bit(HCI_RUNNING, &hdev->flags))
804 return;
805
806 if (urb->status == 0) {
807 hdev->stat.byte_rx += urb->actual_length;
808
809 if (data->recv_bulk(data, urb->transfer_buffer,
810 urb->actual_length) < 0) {
811 bt_dev_err(hdev, "corrupted ACL packet");
812 hdev->stat.err_rx++;
813 }
814 } else if (urb->status == -ENOENT) {
815 /* Avoid suspend failed when usb_kill_urb */
816 return;
817 }
818
819 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
820 return;
821
822 usb_anchor_urb(urb, &data->bulk_anchor);
823 usb_mark_last_busy(data->udev);
824
825 err = usb_submit_urb(urb, GFP_ATOMIC);
826 if (err < 0) {
827 /* -EPERM: urb is being killed;
828 * -ENODEV: device got disconnected
829 */
830 if (err != -EPERM && err != -ENODEV)
831 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
832 urb, -err);
833 usb_unanchor_urb(urb);
834 }
835 }
836
837 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
838 {
839 struct btusb_data *data = hci_get_drvdata(hdev);
840 struct urb *urb;
841 unsigned char *buf;
842 unsigned int pipe;
843 int err, size = HCI_MAX_FRAME_SIZE;
844
845 BT_DBG("%s", hdev->name);
846
847 if (!data->bulk_rx_ep)
848 return -ENODEV;
849
850 urb = usb_alloc_urb(0, mem_flags);
851 if (!urb)
852 return -ENOMEM;
853
854 buf = kmalloc(size, mem_flags);
855 if (!buf) {
856 usb_free_urb(urb);
857 return -ENOMEM;
858 }
859
860 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
861
862 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
863 btusb_bulk_complete, hdev);
864
865 urb->transfer_flags |= URB_FREE_BUFFER;
866
867 usb_mark_last_busy(data->udev);
868 usb_anchor_urb(urb, &data->bulk_anchor);
869
870 err = usb_submit_urb(urb, mem_flags);
871 if (err < 0) {
872 if (err != -EPERM && err != -ENODEV)
873 bt_dev_err(hdev, "urb %p submission failed (%d)",
874 urb, -err);
875 usb_unanchor_urb(urb);
876 }
877
878 usb_free_urb(urb);
879
880 return err;
881 }
882
883 static void btusb_isoc_complete(struct urb *urb)
884 {
885 struct hci_dev *hdev = urb->context;
886 struct btusb_data *data = hci_get_drvdata(hdev);
887 int i, err;
888
889 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
890 urb->actual_length);
891
892 if (!test_bit(HCI_RUNNING, &hdev->flags))
893 return;
894
895 if (urb->status == 0) {
896 for (i = 0; i < urb->number_of_packets; i++) {
897 unsigned int offset = urb->iso_frame_desc[i].offset;
898 unsigned int length = urb->iso_frame_desc[i].actual_length;
899
900 if (urb->iso_frame_desc[i].status)
901 continue;
902
903 hdev->stat.byte_rx += length;
904
905 if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
906 length) < 0) {
907 bt_dev_err(hdev, "corrupted SCO packet");
908 hdev->stat.err_rx++;
909 }
910 }
911 } else if (urb->status == -ENOENT) {
912 /* Avoid suspend failed when usb_kill_urb */
913 return;
914 }
915
916 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
917 return;
918
919 usb_anchor_urb(urb, &data->isoc_anchor);
920
921 err = usb_submit_urb(urb, GFP_ATOMIC);
922 if (err < 0) {
923 /* -EPERM: urb is being killed;
924 * -ENODEV: device got disconnected
925 */
926 if (err != -EPERM && err != -ENODEV)
927 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
928 urb, -err);
929 usb_unanchor_urb(urb);
930 }
931 }
932
933 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
934 {
935 int i, offset = 0;
936
937 BT_DBG("len %d mtu %d", len, mtu);
938
939 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
940 i++, offset += mtu, len -= mtu) {
941 urb->iso_frame_desc[i].offset = offset;
942 urb->iso_frame_desc[i].length = mtu;
943 }
944
945 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
946 urb->iso_frame_desc[i].offset = offset;
947 urb->iso_frame_desc[i].length = len;
948 i++;
949 }
950
951 urb->number_of_packets = i;
952 }
953
954 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
955 {
956 struct btusb_data *data = hci_get_drvdata(hdev);
957 struct urb *urb;
958 unsigned char *buf;
959 unsigned int pipe;
960 int err, size;
961
962 BT_DBG("%s", hdev->name);
963
964 if (!data->isoc_rx_ep)
965 return -ENODEV;
966
967 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
968 if (!urb)
969 return -ENOMEM;
970
971 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
972 BTUSB_MAX_ISOC_FRAMES;
973
974 buf = kmalloc(size, mem_flags);
975 if (!buf) {
976 usb_free_urb(urb);
977 return -ENOMEM;
978 }
979
980 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
981
982 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
983 hdev, data->isoc_rx_ep->bInterval);
984
985 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
986
987 __fill_isoc_descriptor(urb, size,
988 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
989
990 usb_anchor_urb(urb, &data->isoc_anchor);
991
992 err = usb_submit_urb(urb, mem_flags);
993 if (err < 0) {
994 if (err != -EPERM && err != -ENODEV)
995 bt_dev_err(hdev, "urb %p submission failed (%d)",
996 urb, -err);
997 usb_unanchor_urb(urb);
998 }
999
1000 usb_free_urb(urb);
1001
1002 return err;
1003 }
1004
1005 static void btusb_diag_complete(struct urb *urb)
1006 {
1007 struct hci_dev *hdev = urb->context;
1008 struct btusb_data *data = hci_get_drvdata(hdev);
1009 int err;
1010
1011 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1012 urb->actual_length);
1013
1014 if (urb->status == 0) {
1015 struct sk_buff *skb;
1016
1017 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1018 if (skb) {
1019 skb_put_data(skb, urb->transfer_buffer,
1020 urb->actual_length);
1021 hci_recv_diag(hdev, skb);
1022 }
1023 } else if (urb->status == -ENOENT) {
1024 /* Avoid suspend failed when usb_kill_urb */
1025 return;
1026 }
1027
1028 if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1029 return;
1030
1031 usb_anchor_urb(urb, &data->diag_anchor);
1032 usb_mark_last_busy(data->udev);
1033
1034 err = usb_submit_urb(urb, GFP_ATOMIC);
1035 if (err < 0) {
1036 /* -EPERM: urb is being killed;
1037 * -ENODEV: device got disconnected
1038 */
1039 if (err != -EPERM && err != -ENODEV)
1040 bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1041 urb, -err);
1042 usb_unanchor_urb(urb);
1043 }
1044 }
1045
1046 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1047 {
1048 struct btusb_data *data = hci_get_drvdata(hdev);
1049 struct urb *urb;
1050 unsigned char *buf;
1051 unsigned int pipe;
1052 int err, size = HCI_MAX_FRAME_SIZE;
1053
1054 BT_DBG("%s", hdev->name);
1055
1056 if (!data->diag_rx_ep)
1057 return -ENODEV;
1058
1059 urb = usb_alloc_urb(0, mem_flags);
1060 if (!urb)
1061 return -ENOMEM;
1062
1063 buf = kmalloc(size, mem_flags);
1064 if (!buf) {
1065 usb_free_urb(urb);
1066 return -ENOMEM;
1067 }
1068
1069 pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1070
1071 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1072 btusb_diag_complete, hdev);
1073
1074 urb->transfer_flags |= URB_FREE_BUFFER;
1075
1076 usb_mark_last_busy(data->udev);
1077 usb_anchor_urb(urb, &data->diag_anchor);
1078
1079 err = usb_submit_urb(urb, mem_flags);
1080 if (err < 0) {
1081 if (err != -EPERM && err != -ENODEV)
1082 bt_dev_err(hdev, "urb %p submission failed (%d)",
1083 urb, -err);
1084 usb_unanchor_urb(urb);
1085 }
1086
1087 usb_free_urb(urb);
1088
1089 return err;
1090 }
1091
1092 static void btusb_tx_complete(struct urb *urb)
1093 {
1094 struct sk_buff *skb = urb->context;
1095 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1096 struct btusb_data *data = hci_get_drvdata(hdev);
1097 unsigned long flags;
1098
1099 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1100 urb->actual_length);
1101
1102 if (!test_bit(HCI_RUNNING, &hdev->flags))
1103 goto done;
1104
1105 if (!urb->status)
1106 hdev->stat.byte_tx += urb->transfer_buffer_length;
1107 else
1108 hdev->stat.err_tx++;
1109
1110 done:
1111 spin_lock_irqsave(&data->txlock, flags);
1112 data->tx_in_flight--;
1113 spin_unlock_irqrestore(&data->txlock, flags);
1114
1115 kfree(urb->setup_packet);
1116
1117 kfree_skb(skb);
1118 }
1119
1120 static void btusb_isoc_tx_complete(struct urb *urb)
1121 {
1122 struct sk_buff *skb = urb->context;
1123 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1124
1125 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1126 urb->actual_length);
1127
1128 if (!test_bit(HCI_RUNNING, &hdev->flags))
1129 goto done;
1130
1131 if (!urb->status)
1132 hdev->stat.byte_tx += urb->transfer_buffer_length;
1133 else
1134 hdev->stat.err_tx++;
1135
1136 done:
1137 kfree(urb->setup_packet);
1138
1139 kfree_skb(skb);
1140 }
1141
1142 static int btusb_open(struct hci_dev *hdev)
1143 {
1144 struct btusb_data *data = hci_get_drvdata(hdev);
1145 int err;
1146
1147 BT_DBG("%s", hdev->name);
1148
1149 err = usb_autopm_get_interface(data->intf);
1150 if (err < 0)
1151 return err;
1152
1153 /* Patching USB firmware files prior to starting any URBs of HCI path
1154 * It is more safe to use USB bulk channel for downloading USB patch
1155 */
1156 if (data->setup_on_usb) {
1157 err = data->setup_on_usb(hdev);
1158 if (err < 0)
1159 return err;
1160 }
1161
1162 data->intf->needs_remote_wakeup = 1;
1163 /* device specific wakeup source enabled and required for USB
1164 * remote wakeup while host is suspended
1165 */
1166 device_wakeup_enable(&data->udev->dev);
1167
1168 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1169 goto done;
1170
1171 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1172 if (err < 0)
1173 goto failed;
1174
1175 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1176 if (err < 0) {
1177 usb_kill_anchored_urbs(&data->intr_anchor);
1178 goto failed;
1179 }
1180
1181 set_bit(BTUSB_BULK_RUNNING, &data->flags);
1182 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1183
1184 if (data->diag) {
1185 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1186 set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1187 }
1188
1189 done:
1190 usb_autopm_put_interface(data->intf);
1191 return 0;
1192
1193 failed:
1194 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1195 usb_autopm_put_interface(data->intf);
1196 return err;
1197 }
1198
1199 static void btusb_stop_traffic(struct btusb_data *data)
1200 {
1201 usb_kill_anchored_urbs(&data->intr_anchor);
1202 usb_kill_anchored_urbs(&data->bulk_anchor);
1203 usb_kill_anchored_urbs(&data->isoc_anchor);
1204 usb_kill_anchored_urbs(&data->diag_anchor);
1205 }
1206
1207 static int btusb_close(struct hci_dev *hdev)
1208 {
1209 struct btusb_data *data = hci_get_drvdata(hdev);
1210 int err;
1211
1212 BT_DBG("%s", hdev->name);
1213
1214 cancel_work_sync(&data->work);
1215 cancel_work_sync(&data->waker);
1216
1217 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1218 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1219 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1220 clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1221
1222 btusb_stop_traffic(data);
1223 btusb_free_frags(data);
1224
1225 err = usb_autopm_get_interface(data->intf);
1226 if (err < 0)
1227 goto failed;
1228
1229 data->intf->needs_remote_wakeup = 0;
1230 device_wakeup_disable(&data->udev->dev);
1231 usb_autopm_put_interface(data->intf);
1232
1233 failed:
1234 usb_scuttle_anchored_urbs(&data->deferred);
1235 return 0;
1236 }
1237
1238 static int btusb_flush(struct hci_dev *hdev)
1239 {
1240 struct btusb_data *data = hci_get_drvdata(hdev);
1241
1242 BT_DBG("%s", hdev->name);
1243
1244 usb_kill_anchored_urbs(&data->tx_anchor);
1245 btusb_free_frags(data);
1246
1247 return 0;
1248 }
1249
1250 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1251 {
1252 struct btusb_data *data = hci_get_drvdata(hdev);
1253 struct usb_ctrlrequest *dr;
1254 struct urb *urb;
1255 unsigned int pipe;
1256
1257 urb = usb_alloc_urb(0, GFP_KERNEL);
1258 if (!urb)
1259 return ERR_PTR(-ENOMEM);
1260
1261 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1262 if (!dr) {
1263 usb_free_urb(urb);
1264 return ERR_PTR(-ENOMEM);
1265 }
1266
1267 dr->bRequestType = data->cmdreq_type;
1268 dr->bRequest = data->cmdreq;
1269 dr->wIndex = 0;
1270 dr->wValue = 0;
1271 dr->wLength = __cpu_to_le16(skb->len);
1272
1273 pipe = usb_sndctrlpipe(data->udev, 0x00);
1274
1275 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1276 skb->data, skb->len, btusb_tx_complete, skb);
1277
1278 skb->dev = (void *)hdev;
1279
1280 return urb;
1281 }
1282
1283 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1284 {
1285 struct btusb_data *data = hci_get_drvdata(hdev);
1286 struct urb *urb;
1287 unsigned int pipe;
1288
1289 if (!data->bulk_tx_ep)
1290 return ERR_PTR(-ENODEV);
1291
1292 urb = usb_alloc_urb(0, GFP_KERNEL);
1293 if (!urb)
1294 return ERR_PTR(-ENOMEM);
1295
1296 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1297
1298 usb_fill_bulk_urb(urb, data->udev, pipe,
1299 skb->data, skb->len, btusb_tx_complete, skb);
1300
1301 skb->dev = (void *)hdev;
1302
1303 return urb;
1304 }
1305
1306 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1307 {
1308 struct btusb_data *data = hci_get_drvdata(hdev);
1309 struct urb *urb;
1310 unsigned int pipe;
1311
1312 if (!data->isoc_tx_ep)
1313 return ERR_PTR(-ENODEV);
1314
1315 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1316 if (!urb)
1317 return ERR_PTR(-ENOMEM);
1318
1319 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1320
1321 usb_fill_int_urb(urb, data->udev, pipe,
1322 skb->data, skb->len, btusb_isoc_tx_complete,
1323 skb, data->isoc_tx_ep->bInterval);
1324
1325 urb->transfer_flags = URB_ISO_ASAP;
1326
1327 __fill_isoc_descriptor(urb, skb->len,
1328 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1329
1330 skb->dev = (void *)hdev;
1331
1332 return urb;
1333 }
1334
1335 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1336 {
1337 struct btusb_data *data = hci_get_drvdata(hdev);
1338 int err;
1339
1340 usb_anchor_urb(urb, &data->tx_anchor);
1341
1342 err = usb_submit_urb(urb, GFP_KERNEL);
1343 if (err < 0) {
1344 if (err != -EPERM && err != -ENODEV)
1345 bt_dev_err(hdev, "urb %p submission failed (%d)",
1346 urb, -err);
1347 kfree(urb->setup_packet);
1348 usb_unanchor_urb(urb);
1349 } else {
1350 usb_mark_last_busy(data->udev);
1351 }
1352
1353 usb_free_urb(urb);
1354 return err;
1355 }
1356
1357 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1358 {
1359 struct btusb_data *data = hci_get_drvdata(hdev);
1360 unsigned long flags;
1361 bool suspending;
1362
1363 spin_lock_irqsave(&data->txlock, flags);
1364 suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1365 if (!suspending)
1366 data->tx_in_flight++;
1367 spin_unlock_irqrestore(&data->txlock, flags);
1368
1369 if (!suspending)
1370 return submit_tx_urb(hdev, urb);
1371
1372 usb_anchor_urb(urb, &data->deferred);
1373 schedule_work(&data->waker);
1374
1375 usb_free_urb(urb);
1376 return 0;
1377 }
1378
1379 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1380 {
1381 struct urb *urb;
1382
1383 BT_DBG("%s", hdev->name);
1384
1385 switch (hci_skb_pkt_type(skb)) {
1386 case HCI_COMMAND_PKT:
1387 urb = alloc_ctrl_urb(hdev, skb);
1388 if (IS_ERR(urb))
1389 return PTR_ERR(urb);
1390
1391 hdev->stat.cmd_tx++;
1392 return submit_or_queue_tx_urb(hdev, urb);
1393
1394 case HCI_ACLDATA_PKT:
1395 urb = alloc_bulk_urb(hdev, skb);
1396 if (IS_ERR(urb))
1397 return PTR_ERR(urb);
1398
1399 hdev->stat.acl_tx++;
1400 return submit_or_queue_tx_urb(hdev, urb);
1401
1402 case HCI_SCODATA_PKT:
1403 if (hci_conn_num(hdev, SCO_LINK) < 1)
1404 return -ENODEV;
1405
1406 urb = alloc_isoc_urb(hdev, skb);
1407 if (IS_ERR(urb))
1408 return PTR_ERR(urb);
1409
1410 hdev->stat.sco_tx++;
1411 return submit_tx_urb(hdev, urb);
1412 }
1413
1414 return -EILSEQ;
1415 }
1416
1417 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1418 {
1419 struct btusb_data *data = hci_get_drvdata(hdev);
1420
1421 BT_DBG("%s evt %d", hdev->name, evt);
1422
1423 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1424 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1425 schedule_work(&data->work);
1426 }
1427 }
1428
1429 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1430 {
1431 struct btusb_data *data = hci_get_drvdata(hdev);
1432 struct usb_interface *intf = data->isoc;
1433 struct usb_endpoint_descriptor *ep_desc;
1434 int i, err;
1435
1436 if (!data->isoc)
1437 return -ENODEV;
1438
1439 err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1440 if (err < 0) {
1441 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1442 return err;
1443 }
1444
1445 data->isoc_altsetting = altsetting;
1446
1447 data->isoc_tx_ep = NULL;
1448 data->isoc_rx_ep = NULL;
1449
1450 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1451 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1452
1453 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1454 data->isoc_tx_ep = ep_desc;
1455 continue;
1456 }
1457
1458 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1459 data->isoc_rx_ep = ep_desc;
1460 continue;
1461 }
1462 }
1463
1464 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1465 bt_dev_err(hdev, "invalid SCO descriptors");
1466 return -ENODEV;
1467 }
1468
1469 return 0;
1470 }
1471
1472 static void btusb_work(struct work_struct *work)
1473 {
1474 struct btusb_data *data = container_of(work, struct btusb_data, work);
1475 struct hci_dev *hdev = data->hdev;
1476 int new_alts;
1477 int err;
1478
1479 if (data->sco_num > 0) {
1480 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1481 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1482 if (err < 0) {
1483 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1484 usb_kill_anchored_urbs(&data->isoc_anchor);
1485 return;
1486 }
1487
1488 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1489 }
1490
1491 if (hdev->voice_setting & 0x0020) {
1492 static const int alts[3] = { 2, 4, 5 };
1493
1494 new_alts = alts[data->sco_num - 1];
1495 } else {
1496 new_alts = data->sco_num;
1497 }
1498
1499 if (data->isoc_altsetting != new_alts) {
1500 unsigned long flags;
1501
1502 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1503 usb_kill_anchored_urbs(&data->isoc_anchor);
1504
1505 /* When isochronous alternate setting needs to be
1506 * changed, because SCO connection has been added
1507 * or removed, a packet fragment may be left in the
1508 * reassembling state. This could lead to wrongly
1509 * assembled fragments.
1510 *
1511 * Clear outstanding fragment when selecting a new
1512 * alternate setting.
1513 */
1514 spin_lock_irqsave(&data->rxlock, flags);
1515 kfree_skb(data->sco_skb);
1516 data->sco_skb = NULL;
1517 spin_unlock_irqrestore(&data->rxlock, flags);
1518
1519 if (__set_isoc_interface(hdev, new_alts) < 0)
1520 return;
1521 }
1522
1523 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1524 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1525 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1526 else
1527 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1528 }
1529 } else {
1530 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1531 usb_kill_anchored_urbs(&data->isoc_anchor);
1532
1533 __set_isoc_interface(hdev, 0);
1534 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1535 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1536 }
1537 }
1538
1539 static void btusb_waker(struct work_struct *work)
1540 {
1541 struct btusb_data *data = container_of(work, struct btusb_data, waker);
1542 int err;
1543
1544 err = usb_autopm_get_interface(data->intf);
1545 if (err < 0)
1546 return;
1547
1548 usb_autopm_put_interface(data->intf);
1549 }
1550
1551 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1552 {
1553 struct sk_buff *skb;
1554 u8 val = 0x00;
1555
1556 BT_DBG("%s", hdev->name);
1557
1558 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1559 if (IS_ERR(skb))
1560 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
1561 else
1562 kfree_skb(skb);
1563
1564 return 0;
1565 }
1566
1567 static int btusb_setup_csr(struct hci_dev *hdev)
1568 {
1569 struct hci_rp_read_local_version *rp;
1570 struct sk_buff *skb;
1571
1572 BT_DBG("%s", hdev->name);
1573
1574 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1575 HCI_INIT_TIMEOUT);
1576 if (IS_ERR(skb)) {
1577 int err = PTR_ERR(skb);
1578 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
1579 return err;
1580 }
1581
1582 if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1583 bt_dev_err(hdev, "CSR: Local version length mismatch");
1584 kfree_skb(skb);
1585 return -EIO;
1586 }
1587
1588 rp = (struct hci_rp_read_local_version *)skb->data;
1589
1590 /* Detect controllers which aren't real CSR ones. */
1591 if (le16_to_cpu(rp->manufacturer) != 10 ||
1592 le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1593 /* Clear the reset quirk since this is not an actual
1594 * early Bluetooth 1.1 device from CSR.
1595 */
1596 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1597
1598 /* These fake CSR controllers have all a broken
1599 * stored link key handling and so just disable it.
1600 */
1601 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1602 }
1603
1604 kfree_skb(skb);
1605
1606 return 0;
1607 }
1608
1609 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1610 struct intel_version *ver)
1611 {
1612 const struct firmware *fw;
1613 char fwname[64];
1614 int ret;
1615
1616 snprintf(fwname, sizeof(fwname),
1617 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1618 ver->hw_platform, ver->hw_variant, ver->hw_revision,
1619 ver->fw_variant, ver->fw_revision, ver->fw_build_num,
1620 ver->fw_build_ww, ver->fw_build_yy);
1621
1622 ret = request_firmware(&fw, fwname, &hdev->dev);
1623 if (ret < 0) {
1624 if (ret == -EINVAL) {
1625 bt_dev_err(hdev, "Intel firmware file request failed (%d)",
1626 ret);
1627 return NULL;
1628 }
1629
1630 bt_dev_err(hdev, "failed to open Intel firmware file: %s (%d)",
1631 fwname, ret);
1632
1633 /* If the correct firmware patch file is not found, use the
1634 * default firmware patch file instead
1635 */
1636 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1637 ver->hw_platform, ver->hw_variant);
1638 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1639 bt_dev_err(hdev, "failed to open default fw file: %s",
1640 fwname);
1641 return NULL;
1642 }
1643 }
1644
1645 bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname);
1646
1647 return fw;
1648 }
1649
1650 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1651 const struct firmware *fw,
1652 const u8 **fw_ptr, int *disable_patch)
1653 {
1654 struct sk_buff *skb;
1655 struct hci_command_hdr *cmd;
1656 const u8 *cmd_param;
1657 struct hci_event_hdr *evt = NULL;
1658 const u8 *evt_param = NULL;
1659 int remain = fw->size - (*fw_ptr - fw->data);
1660
1661 /* The first byte indicates the types of the patch command or event.
1662 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1663 * in the current firmware buffer doesn't start with 0x01 or
1664 * the size of remain buffer is smaller than HCI command header,
1665 * the firmware file is corrupted and it should stop the patching
1666 * process.
1667 */
1668 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1669 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd read");
1670 return -EINVAL;
1671 }
1672 (*fw_ptr)++;
1673 remain--;
1674
1675 cmd = (struct hci_command_hdr *)(*fw_ptr);
1676 *fw_ptr += sizeof(*cmd);
1677 remain -= sizeof(*cmd);
1678
1679 /* Ensure that the remain firmware data is long enough than the length
1680 * of command parameter. If not, the firmware file is corrupted.
1681 */
1682 if (remain < cmd->plen) {
1683 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd len");
1684 return -EFAULT;
1685 }
1686
1687 /* If there is a command that loads a patch in the firmware
1688 * file, then enable the patch upon success, otherwise just
1689 * disable the manufacturer mode, for example patch activation
1690 * is not required when the default firmware patch file is used
1691 * because there are no patch data to load.
1692 */
1693 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1694 *disable_patch = 0;
1695
1696 cmd_param = *fw_ptr;
1697 *fw_ptr += cmd->plen;
1698 remain -= cmd->plen;
1699
1700 /* This reads the expected events when the above command is sent to the
1701 * device. Some vendor commands expects more than one events, for
1702 * example command status event followed by vendor specific event.
1703 * For this case, it only keeps the last expected event. so the command
1704 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1705 * last expected event.
1706 */
1707 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1708 (*fw_ptr)++;
1709 remain--;
1710
1711 evt = (struct hci_event_hdr *)(*fw_ptr);
1712 *fw_ptr += sizeof(*evt);
1713 remain -= sizeof(*evt);
1714
1715 if (remain < evt->plen) {
1716 bt_dev_err(hdev, "Intel fw corrupted: invalid evt len");
1717 return -EFAULT;
1718 }
1719
1720 evt_param = *fw_ptr;
1721 *fw_ptr += evt->plen;
1722 remain -= evt->plen;
1723 }
1724
1725 /* Every HCI commands in the firmware file has its correspond event.
1726 * If event is not found or remain is smaller than zero, the firmware
1727 * file is corrupted.
1728 */
1729 if (!evt || !evt_param || remain < 0) {
1730 bt_dev_err(hdev, "Intel fw corrupted: invalid evt read");
1731 return -EFAULT;
1732 }
1733
1734 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1735 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1736 if (IS_ERR(skb)) {
1737 bt_dev_err(hdev, "sending Intel patch command (0x%4.4x) failed (%ld)",
1738 cmd->opcode, PTR_ERR(skb));
1739 return PTR_ERR(skb);
1740 }
1741
1742 /* It ensures that the returned event matches the event data read from
1743 * the firmware file. At fist, it checks the length and then
1744 * the contents of the event.
1745 */
1746 if (skb->len != evt->plen) {
1747 bt_dev_err(hdev, "mismatch event length (opcode 0x%4.4x)",
1748 le16_to_cpu(cmd->opcode));
1749 kfree_skb(skb);
1750 return -EFAULT;
1751 }
1752
1753 if (memcmp(skb->data, evt_param, evt->plen)) {
1754 bt_dev_err(hdev, "mismatch event parameter (opcode 0x%4.4x)",
1755 le16_to_cpu(cmd->opcode));
1756 kfree_skb(skb);
1757 return -EFAULT;
1758 }
1759 kfree_skb(skb);
1760
1761 return 0;
1762 }
1763
1764 static int btusb_setup_intel(struct hci_dev *hdev)
1765 {
1766 struct sk_buff *skb;
1767 const struct firmware *fw;
1768 const u8 *fw_ptr;
1769 int disable_patch, err;
1770 struct intel_version ver;
1771
1772 BT_DBG("%s", hdev->name);
1773
1774 /* The controller has a bug with the first HCI command sent to it
1775 * returning number of completed commands as zero. This would stall the
1776 * command processing in the Bluetooth core.
1777 *
1778 * As a workaround, send HCI Reset command first which will reset the
1779 * number of completed commands and allow normal command processing
1780 * from now on.
1781 */
1782 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1783 if (IS_ERR(skb)) {
1784 bt_dev_err(hdev, "sending initial HCI reset command failed (%ld)",
1785 PTR_ERR(skb));
1786 return PTR_ERR(skb);
1787 }
1788 kfree_skb(skb);
1789
1790 /* Read Intel specific controller version first to allow selection of
1791 * which firmware file to load.
1792 *
1793 * The returned information are hardware variant and revision plus
1794 * firmware variant, revision and build number.
1795 */
1796 err = btintel_read_version(hdev, &ver);
1797 if (err)
1798 return err;
1799
1800 bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1801 ver.hw_platform, ver.hw_variant, ver.hw_revision,
1802 ver.fw_variant, ver.fw_revision, ver.fw_build_num,
1803 ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
1804
1805 /* fw_patch_num indicates the version of patch the device currently
1806 * have. If there is no patch data in the device, it is always 0x00.
1807 * So, if it is other than 0x00, no need to patch the device again.
1808 */
1809 if (ver.fw_patch_num) {
1810 bt_dev_info(hdev, "Intel device is already patched. "
1811 "patch num: %02x", ver.fw_patch_num);
1812 goto complete;
1813 }
1814
1815 /* Opens the firmware patch file based on the firmware version read
1816 * from the controller. If it fails to open the matching firmware
1817 * patch file, it tries to open the default firmware patch file.
1818 * If no patch file is found, allow the device to operate without
1819 * a patch.
1820 */
1821 fw = btusb_setup_intel_get_fw(hdev, &ver);
1822 if (!fw)
1823 goto complete;
1824 fw_ptr = fw->data;
1825
1826 /* Enable the manufacturer mode of the controller.
1827 * Only while this mode is enabled, the driver can download the
1828 * firmware patch data and configuration parameters.
1829 */
1830 err = btintel_enter_mfg(hdev);
1831 if (err) {
1832 release_firmware(fw);
1833 return err;
1834 }
1835
1836 disable_patch = 1;
1837
1838 /* The firmware data file consists of list of Intel specific HCI
1839 * commands and its expected events. The first byte indicates the
1840 * type of the message, either HCI command or HCI event.
1841 *
1842 * It reads the command and its expected event from the firmware file,
1843 * and send to the controller. Once __hci_cmd_sync_ev() returns,
1844 * the returned event is compared with the event read from the firmware
1845 * file and it will continue until all the messages are downloaded to
1846 * the controller.
1847 *
1848 * Once the firmware patching is completed successfully,
1849 * the manufacturer mode is disabled with reset and activating the
1850 * downloaded patch.
1851 *
1852 * If the firmware patching fails, the manufacturer mode is
1853 * disabled with reset and deactivating the patch.
1854 *
1855 * If the default patch file is used, no reset is done when disabling
1856 * the manufacturer.
1857 */
1858 while (fw->size > fw_ptr - fw->data) {
1859 int ret;
1860
1861 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1862 &disable_patch);
1863 if (ret < 0)
1864 goto exit_mfg_deactivate;
1865 }
1866
1867 release_firmware(fw);
1868
1869 if (disable_patch)
1870 goto exit_mfg_disable;
1871
1872 /* Patching completed successfully and disable the manufacturer mode
1873 * with reset and activate the downloaded firmware patches.
1874 */
1875 err = btintel_exit_mfg(hdev, true, true);
1876 if (err)
1877 return err;
1878
1879 bt_dev_info(hdev, "Intel firmware patch completed and activated");
1880
1881 goto complete;
1882
1883 exit_mfg_disable:
1884 /* Disable the manufacturer mode without reset */
1885 err = btintel_exit_mfg(hdev, false, false);
1886 if (err)
1887 return err;
1888
1889 bt_dev_info(hdev, "Intel firmware patch completed");
1890
1891 goto complete;
1892
1893 exit_mfg_deactivate:
1894 release_firmware(fw);
1895
1896 /* Patching failed. Disable the manufacturer mode with reset and
1897 * deactivate the downloaded firmware patches.
1898 */
1899 err = btintel_exit_mfg(hdev, true, false);
1900 if (err)
1901 return err;
1902
1903 bt_dev_info(hdev, "Intel firmware patch completed and deactivated");
1904
1905 complete:
1906 /* Set the event mask for Intel specific vendor events. This enables
1907 * a few extra events that are useful during general operation.
1908 */
1909 btintel_set_event_mask_mfg(hdev, false);
1910
1911 btintel_check_bdaddr(hdev);
1912 return 0;
1913 }
1914
1915 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1916 {
1917 struct sk_buff *skb;
1918 struct hci_event_hdr *hdr;
1919 struct hci_ev_cmd_complete *evt;
1920
1921 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
1922 if (!skb)
1923 return -ENOMEM;
1924
1925 hdr = skb_put(skb, sizeof(*hdr));
1926 hdr->evt = HCI_EV_CMD_COMPLETE;
1927 hdr->plen = sizeof(*evt) + 1;
1928
1929 evt = skb_put(skb, sizeof(*evt));
1930 evt->ncmd = 0x01;
1931 evt->opcode = cpu_to_le16(opcode);
1932
1933 skb_put_u8(skb, 0x00);
1934
1935 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
1936
1937 return hci_recv_frame(hdev, skb);
1938 }
1939
1940 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1941 int count)
1942 {
1943 /* When the device is in bootloader mode, then it can send
1944 * events via the bulk endpoint. These events are treated the
1945 * same way as the ones received from the interrupt endpoint.
1946 */
1947 if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1948 return btusb_recv_intr(data, buffer, count);
1949
1950 return btusb_recv_bulk(data, buffer, count);
1951 }
1952
1953 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1954 unsigned int len)
1955 {
1956 const struct intel_bootup *evt = ptr;
1957
1958 if (len != sizeof(*evt))
1959 return;
1960
1961 if (test_and_clear_bit(BTUSB_BOOTING, &data->flags))
1962 wake_up_bit(&data->flags, BTUSB_BOOTING);
1963 }
1964
1965 static void btusb_intel_secure_send_result(struct btusb_data *data,
1966 const void *ptr, unsigned int len)
1967 {
1968 const struct intel_secure_send_result *evt = ptr;
1969
1970 if (len != sizeof(*evt))
1971 return;
1972
1973 if (evt->result)
1974 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1975
1976 if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1977 test_bit(BTUSB_FIRMWARE_LOADED, &data->flags))
1978 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1979 }
1980
1981 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1982 {
1983 struct btusb_data *data = hci_get_drvdata(hdev);
1984
1985 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1986 struct hci_event_hdr *hdr = (void *)skb->data;
1987
1988 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1989 hdr->plen > 0) {
1990 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1991 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1992
1993 switch (skb->data[2]) {
1994 case 0x02:
1995 /* When switching to the operational firmware
1996 * the device sends a vendor specific event
1997 * indicating that the bootup completed.
1998 */
1999 btusb_intel_bootup(data, ptr, len);
2000 break;
2001 case 0x06:
2002 /* When the firmware loading completes the
2003 * device sends out a vendor specific event
2004 * indicating the result of the firmware
2005 * loading.
2006 */
2007 btusb_intel_secure_send_result(data, ptr, len);
2008 break;
2009 }
2010 }
2011 }
2012
2013 return hci_recv_frame(hdev, skb);
2014 }
2015
2016 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2017 {
2018 struct btusb_data *data = hci_get_drvdata(hdev);
2019 struct urb *urb;
2020
2021 BT_DBG("%s", hdev->name);
2022
2023 switch (hci_skb_pkt_type(skb)) {
2024 case HCI_COMMAND_PKT:
2025 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2026 struct hci_command_hdr *cmd = (void *)skb->data;
2027 __u16 opcode = le16_to_cpu(cmd->opcode);
2028
2029 /* When in bootloader mode and the command 0xfc09
2030 * is received, it needs to be send down the
2031 * bulk endpoint. So allocate a bulk URB instead.
2032 */
2033 if (opcode == 0xfc09)
2034 urb = alloc_bulk_urb(hdev, skb);
2035 else
2036 urb = alloc_ctrl_urb(hdev, skb);
2037
2038 /* When the 0xfc01 command is issued to boot into
2039 * the operational firmware, it will actually not
2040 * send a command complete event. To keep the flow
2041 * control working inject that event here.
2042 */
2043 if (opcode == 0xfc01)
2044 inject_cmd_complete(hdev, opcode);
2045 } else {
2046 urb = alloc_ctrl_urb(hdev, skb);
2047 }
2048 if (IS_ERR(urb))
2049 return PTR_ERR(urb);
2050
2051 hdev->stat.cmd_tx++;
2052 return submit_or_queue_tx_urb(hdev, urb);
2053
2054 case HCI_ACLDATA_PKT:
2055 urb = alloc_bulk_urb(hdev, skb);
2056 if (IS_ERR(urb))
2057 return PTR_ERR(urb);
2058
2059 hdev->stat.acl_tx++;
2060 return submit_or_queue_tx_urb(hdev, urb);
2061
2062 case HCI_SCODATA_PKT:
2063 if (hci_conn_num(hdev, SCO_LINK) < 1)
2064 return -ENODEV;
2065
2066 urb = alloc_isoc_urb(hdev, skb);
2067 if (IS_ERR(urb))
2068 return PTR_ERR(urb);
2069
2070 hdev->stat.sco_tx++;
2071 return submit_tx_urb(hdev, urb);
2072 }
2073
2074 return -EILSEQ;
2075 }
2076
2077 static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver,
2078 struct intel_boot_params *params,
2079 char *fw_name, size_t len,
2080 const char *suffix)
2081 {
2082 switch (ver->hw_variant) {
2083 case 0x0b: /* SfP */
2084 case 0x0c: /* WsP */
2085 snprintf(fw_name, len, "intel/ibt-%u-%u.%s",
2086 le16_to_cpu(ver->hw_variant),
2087 le16_to_cpu(params->dev_revid),
2088 suffix);
2089 break;
2090 case 0x11: /* JfP */
2091 case 0x12: /* ThP */
2092 case 0x13: /* HrP */
2093 case 0x14: /* CcP */
2094 snprintf(fw_name, len, "intel/ibt-%u-%u-%u.%s",
2095 le16_to_cpu(ver->hw_variant),
2096 le16_to_cpu(ver->hw_revision),
2097 le16_to_cpu(ver->fw_revision),
2098 suffix);
2099 break;
2100 default:
2101 return false;
2102 }
2103 return true;
2104 }
2105
2106 static int btusb_setup_intel_new(struct hci_dev *hdev)
2107 {
2108 struct btusb_data *data = hci_get_drvdata(hdev);
2109 struct intel_version ver;
2110 struct intel_boot_params params;
2111 const struct firmware *fw;
2112 u32 boot_param;
2113 char fwname[64];
2114 ktime_t calltime, delta, rettime;
2115 unsigned long long duration;
2116 int err;
2117
2118 BT_DBG("%s", hdev->name);
2119
2120 /* Set the default boot parameter to 0x0 and it is updated to
2121 * SKU specific boot parameter after reading Intel_Write_Boot_Params
2122 * command while downloading the firmware.
2123 */
2124 boot_param = 0x00000000;
2125
2126 calltime = ktime_get();
2127
2128 /* Read the Intel version information to determine if the device
2129 * is in bootloader mode or if it already has operational firmware
2130 * loaded.
2131 */
2132 err = btintel_read_version(hdev, &ver);
2133 if (err)
2134 return err;
2135
2136 /* The hardware platform number has a fixed value of 0x37 and
2137 * for now only accept this single value.
2138 */
2139 if (ver.hw_platform != 0x37) {
2140 bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)",
2141 ver.hw_platform);
2142 return -EINVAL;
2143 }
2144
2145 /* Check for supported iBT hardware variants of this firmware
2146 * loading method.
2147 *
2148 * This check has been put in place to ensure correct forward
2149 * compatibility options when newer hardware variants come along.
2150 */
2151 switch (ver.hw_variant) {
2152 case 0x0b: /* SfP */
2153 case 0x0c: /* WsP */
2154 case 0x11: /* JfP */
2155 case 0x12: /* ThP */
2156 case 0x13: /* HrP */
2157 case 0x14: /* CcP */
2158 break;
2159 default:
2160 bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",
2161 ver.hw_variant);
2162 return -EINVAL;
2163 }
2164
2165 btintel_version_info(hdev, &ver);
2166
2167 /* The firmware variant determines if the device is in bootloader
2168 * mode or is running operational firmware. The value 0x06 identifies
2169 * the bootloader and the value 0x23 identifies the operational
2170 * firmware.
2171 *
2172 * When the operational firmware is already present, then only
2173 * the check for valid Bluetooth device address is needed. This
2174 * determines if the device will be added as configured or
2175 * unconfigured controller.
2176 *
2177 * It is not possible to use the Secure Boot Parameters in this
2178 * case since that command is only available in bootloader mode.
2179 */
2180 if (ver.fw_variant == 0x23) {
2181 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2182 btintel_check_bdaddr(hdev);
2183 return 0;
2184 }
2185
2186 /* If the device is not in bootloader mode, then the only possible
2187 * choice is to return an error and abort the device initialization.
2188 */
2189 if (ver.fw_variant != 0x06) {
2190 bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)",
2191 ver.fw_variant);
2192 return -ENODEV;
2193 }
2194
2195 /* Read the secure boot parameters to identify the operating
2196 * details of the bootloader.
2197 */
2198 err = btintel_read_boot_params(hdev, &params);
2199 if (err)
2200 return err;
2201
2202 /* It is required that every single firmware fragment is acknowledged
2203 * with a command complete event. If the boot parameters indicate
2204 * that this bootloader does not send them, then abort the setup.
2205 */
2206 if (params.limited_cce != 0x00) {
2207 bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",
2208 params.limited_cce);
2209 return -EINVAL;
2210 }
2211
2212 /* If the OTP has no valid Bluetooth device address, then there will
2213 * also be no valid address for the operational firmware.
2214 */
2215 if (!bacmp(&params.otp_bdaddr, BDADDR_ANY)) {
2216 bt_dev_info(hdev, "No device address configured");
2217 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2218 }
2219
2220 /* With this Intel bootloader only the hardware variant and device
2221 * revision information are used to select the right firmware for SfP
2222 * and WsP.
2223 *
2224 * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2225 *
2226 * Currently the supported hardware variants are:
2227 * 11 (0x0b) for iBT3.0 (LnP/SfP)
2228 * 12 (0x0c) for iBT3.5 (WsP)
2229 *
2230 * For ThP/JfP and for future SKU's, the FW name varies based on HW
2231 * variant, HW revision and FW revision, as these are dependent on CNVi
2232 * and RF Combination.
2233 *
2234 * 17 (0x11) for iBT3.5 (JfP)
2235 * 18 (0x12) for iBT3.5 (ThP)
2236 *
2237 * The firmware file name for these will be
2238 * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi.
2239 *
2240 */
2241 err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2242 sizeof(fwname), "sfi");
2243 if (!err) {
2244 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2245 return -EINVAL;
2246 }
2247
2248 err = request_firmware(&fw, fwname, &hdev->dev);
2249 if (err < 0) {
2250 bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err);
2251 return err;
2252 }
2253
2254 bt_dev_info(hdev, "Found device firmware: %s", fwname);
2255
2256 /* Save the DDC file name for later use to apply once the firmware
2257 * downloading is done.
2258 */
2259 err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2260 sizeof(fwname), "ddc");
2261 if (!err) {
2262 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2263 return -EINVAL;
2264 }
2265
2266 if (fw->size < 644) {
2267 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2268 fw->size);
2269 err = -EBADF;
2270 goto done;
2271 }
2272
2273 set_bit(BTUSB_DOWNLOADING, &data->flags);
2274
2275 /* Start firmware downloading and get boot parameter */
2276 err = btintel_download_firmware(hdev, fw, &boot_param);
2277 if (err < 0)
2278 goto done;
2279
2280 set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2281
2282 bt_dev_info(hdev, "Waiting for firmware download to complete");
2283
2284 /* Before switching the device into operational mode and with that
2285 * booting the loaded firmware, wait for the bootloader notification
2286 * that all fragments have been successfully received.
2287 *
2288 * When the event processing receives the notification, then the
2289 * BTUSB_DOWNLOADING flag will be cleared.
2290 *
2291 * The firmware loading should not take longer than 5 seconds
2292 * and thus just timeout if that happens and fail the setup
2293 * of this device.
2294 */
2295 err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2296 TASK_INTERRUPTIBLE,
2297 msecs_to_jiffies(5000));
2298 if (err == -EINTR) {
2299 bt_dev_err(hdev, "Firmware loading interrupted");
2300 goto done;
2301 }
2302
2303 if (err) {
2304 bt_dev_err(hdev, "Firmware loading timeout");
2305 err = -ETIMEDOUT;
2306 goto done;
2307 }
2308
2309 if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2310 bt_dev_err(hdev, "Firmware loading failed");
2311 err = -ENOEXEC;
2312 goto done;
2313 }
2314
2315 rettime = ktime_get();
2316 delta = ktime_sub(rettime, calltime);
2317 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2318
2319 bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2320
2321 done:
2322 release_firmware(fw);
2323
2324 if (err < 0)
2325 return err;
2326
2327 calltime = ktime_get();
2328
2329 set_bit(BTUSB_BOOTING, &data->flags);
2330
2331 err = btintel_send_intel_reset(hdev, boot_param);
2332 if (err)
2333 return err;
2334
2335 /* The bootloader will not indicate when the device is ready. This
2336 * is done by the operational firmware sending bootup notification.
2337 *
2338 * Booting into operational firmware should not take longer than
2339 * 1 second. However if that happens, then just fail the setup
2340 * since something went wrong.
2341 */
2342 bt_dev_info(hdev, "Waiting for device to boot");
2343
2344 err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2345 TASK_INTERRUPTIBLE,
2346 msecs_to_jiffies(1000));
2347
2348 if (err == -EINTR) {
2349 bt_dev_err(hdev, "Device boot interrupted");
2350 return -EINTR;
2351 }
2352
2353 if (err) {
2354 bt_dev_err(hdev, "Device boot timeout");
2355 return -ETIMEDOUT;
2356 }
2357
2358 rettime = ktime_get();
2359 delta = ktime_sub(rettime, calltime);
2360 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2361
2362 bt_dev_info(hdev, "Device booted in %llu usecs", duration);
2363
2364 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2365
2366 /* Once the device is running in operational mode, it needs to apply
2367 * the device configuration (DDC) parameters.
2368 *
2369 * The device can work without DDC parameters, so even if it fails
2370 * to load the file, no need to fail the setup.
2371 */
2372 btintel_load_ddc_config(hdev, fwname);
2373
2374 /* Set the event mask for Intel specific vendor events. This enables
2375 * a few extra events that are useful during general operation. It
2376 * does not enable any debugging related events.
2377 *
2378 * The device will function correctly without these events enabled
2379 * and thus no need to fail the setup.
2380 */
2381 btintel_set_event_mask(hdev, false);
2382
2383 return 0;
2384 }
2385
2386 static int btusb_shutdown_intel(struct hci_dev *hdev)
2387 {
2388 struct sk_buff *skb;
2389 long ret;
2390
2391 /* In the shutdown sequence where Bluetooth is turned off followed
2392 * by WiFi being turned off, turning WiFi back on causes issue with
2393 * the RF calibration.
2394 *
2395 * To ensure that any RF activity has been stopped, issue HCI Reset
2396 * command to clear all ongoing activity including advertising,
2397 * scanning etc.
2398 */
2399 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2400 if (IS_ERR(skb)) {
2401 ret = PTR_ERR(skb);
2402 bt_dev_err(hdev, "HCI reset during shutdown failed");
2403 return ret;
2404 }
2405 kfree_skb(skb);
2406
2407 /* Some platforms have an issue with BT LED when the interface is
2408 * down or BT radio is turned off, which takes 5 seconds to BT LED
2409 * goes off. This command turns off the BT LED immediately.
2410 */
2411 skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2412 if (IS_ERR(skb)) {
2413 ret = PTR_ERR(skb);
2414 bt_dev_err(hdev, "turning off Intel device LED failed");
2415 return ret;
2416 }
2417 kfree_skb(skb);
2418
2419 return 0;
2420 }
2421
2422 static int btusb_shutdown_intel_new(struct hci_dev *hdev)
2423 {
2424 struct sk_buff *skb;
2425
2426 /* Send HCI Reset to the controller to stop any BT activity which
2427 * were triggered. This will help to save power and maintain the
2428 * sync b/w Host and controller
2429 */
2430 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2431 if (IS_ERR(skb)) {
2432 bt_dev_err(hdev, "HCI reset during shutdown failed");
2433 return PTR_ERR(skb);
2434 }
2435 kfree_skb(skb);
2436
2437 return 0;
2438 }
2439
2440 #ifdef CONFIG_PM
2441 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
2442 static int marvell_config_oob_wake(struct hci_dev *hdev)
2443 {
2444 struct sk_buff *skb;
2445 struct btusb_data *data = hci_get_drvdata(hdev);
2446 struct device *dev = &data->udev->dev;
2447 u16 pin, gap, opcode;
2448 int ret;
2449 u8 cmd[5];
2450
2451 /* Move on if no wakeup pin specified */
2452 if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
2453 of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
2454 return 0;
2455
2456 /* Vendor specific command to configure a GPIO as wake-up pin */
2457 opcode = hci_opcode_pack(0x3F, 0x59);
2458 cmd[0] = opcode & 0xFF;
2459 cmd[1] = opcode >> 8;
2460 cmd[2] = 2; /* length of parameters that follow */
2461 cmd[3] = pin;
2462 cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
2463
2464 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
2465 if (!skb) {
2466 bt_dev_err(hdev, "%s: No memory\n", __func__);
2467 return -ENOMEM;
2468 }
2469
2470 skb_put_data(skb, cmd, sizeof(cmd));
2471 hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
2472
2473 ret = btusb_send_frame(hdev, skb);
2474 if (ret) {
2475 bt_dev_err(hdev, "%s: configuration failed\n", __func__);
2476 kfree_skb(skb);
2477 return ret;
2478 }
2479
2480 return 0;
2481 }
2482 #endif
2483
2484 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2485 const bdaddr_t *bdaddr)
2486 {
2487 struct sk_buff *skb;
2488 u8 buf[8];
2489 long ret;
2490
2491 buf[0] = 0xfe;
2492 buf[1] = sizeof(bdaddr_t);
2493 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2494
2495 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2496 if (IS_ERR(skb)) {
2497 ret = PTR_ERR(skb);
2498 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
2499 ret);
2500 return ret;
2501 }
2502 kfree_skb(skb);
2503
2504 return 0;
2505 }
2506
2507 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2508 const bdaddr_t *bdaddr)
2509 {
2510 struct sk_buff *skb;
2511 u8 buf[10];
2512 long ret;
2513
2514 buf[0] = 0x01;
2515 buf[1] = 0x01;
2516 buf[2] = 0x00;
2517 buf[3] = sizeof(bdaddr_t);
2518 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2519
2520 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2521 if (IS_ERR(skb)) {
2522 ret = PTR_ERR(skb);
2523 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
2524 return ret;
2525 }
2526 kfree_skb(skb);
2527
2528 return 0;
2529 }
2530
2531 #define QCA_DFU_PACKET_LEN 4096
2532
2533 #define QCA_GET_TARGET_VERSION 0x09
2534 #define QCA_CHECK_STATUS 0x05
2535 #define QCA_DFU_DOWNLOAD 0x01
2536
2537 #define QCA_SYSCFG_UPDATED 0x40
2538 #define QCA_PATCH_UPDATED 0x80
2539 #define QCA_DFU_TIMEOUT 3000
2540
2541 struct qca_version {
2542 __le32 rom_version;
2543 __le32 patch_version;
2544 __le32 ram_version;
2545 __le32 ref_clock;
2546 __u8 reserved[4];
2547 } __packed;
2548
2549 struct qca_rampatch_version {
2550 __le16 rom_version;
2551 __le16 patch_version;
2552 } __packed;
2553
2554 struct qca_device_info {
2555 u32 rom_version;
2556 u8 rampatch_hdr; /* length of header in rampatch */
2557 u8 nvm_hdr; /* length of header in NVM */
2558 u8 ver_offset; /* offset of version structure in rampatch */
2559 };
2560
2561 static const struct qca_device_info qca_devices_table[] = {
2562 { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2563 { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2564 { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2565 { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2566 { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2567 { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2568 };
2569
2570 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
2571 void *data, u16 size)
2572 {
2573 int pipe, err;
2574 u8 *buf;
2575
2576 buf = kmalloc(size, GFP_KERNEL);
2577 if (!buf)
2578 return -ENOMEM;
2579
2580 /* Found some of USB hosts have IOT issues with ours so that we should
2581 * not wait until HCI layer is ready.
2582 */
2583 pipe = usb_rcvctrlpipe(udev, 0);
2584 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2585 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2586 if (err < 0) {
2587 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
2588 goto done;
2589 }
2590
2591 memcpy(data, buf, size);
2592
2593 done:
2594 kfree(buf);
2595
2596 return err;
2597 }
2598
2599 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2600 const struct firmware *firmware,
2601 size_t hdr_size)
2602 {
2603 struct btusb_data *btdata = hci_get_drvdata(hdev);
2604 struct usb_device *udev = btdata->udev;
2605 size_t count, size, sent = 0;
2606 int pipe, len, err;
2607 u8 *buf;
2608
2609 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2610 if (!buf)
2611 return -ENOMEM;
2612
2613 count = firmware->size;
2614
2615 size = min_t(size_t, count, hdr_size);
2616 memcpy(buf, firmware->data, size);
2617
2618 /* USB patches should go down to controller through USB path
2619 * because binary format fits to go down through USB channel.
2620 * USB control path is for patching headers and USB bulk is for
2621 * patch body.
2622 */
2623 pipe = usb_sndctrlpipe(udev, 0);
2624 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2625 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2626 if (err < 0) {
2627 bt_dev_err(hdev, "Failed to send headers (%d)", err);
2628 goto done;
2629 }
2630
2631 sent += size;
2632 count -= size;
2633
2634 while (count) {
2635 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2636
2637 memcpy(buf, firmware->data + sent, size);
2638
2639 pipe = usb_sndbulkpipe(udev, 0x02);
2640 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2641 QCA_DFU_TIMEOUT);
2642 if (err < 0) {
2643 bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
2644 sent, firmware->size, err);
2645 break;
2646 }
2647
2648 if (size != len) {
2649 bt_dev_err(hdev, "Failed to get bulk buffer");
2650 err = -EILSEQ;
2651 break;
2652 }
2653
2654 sent += size;
2655 count -= size;
2656 }
2657
2658 done:
2659 kfree(buf);
2660 return err;
2661 }
2662
2663 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2664 struct qca_version *ver,
2665 const struct qca_device_info *info)
2666 {
2667 struct qca_rampatch_version *rver;
2668 const struct firmware *fw;
2669 u32 ver_rom, ver_patch;
2670 u16 rver_rom, rver_patch;
2671 char fwname[64];
2672 int err;
2673
2674 ver_rom = le32_to_cpu(ver->rom_version);
2675 ver_patch = le32_to_cpu(ver->patch_version);
2676
2677 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2678
2679 err = request_firmware(&fw, fwname, &hdev->dev);
2680 if (err) {
2681 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
2682 fwname, err);
2683 return err;
2684 }
2685
2686 bt_dev_info(hdev, "using rampatch file: %s", fwname);
2687
2688 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2689 rver_rom = le16_to_cpu(rver->rom_version);
2690 rver_patch = le16_to_cpu(rver->patch_version);
2691
2692 bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
2693 "firmware rome 0x%x build 0x%x",
2694 rver_rom, rver_patch, ver_rom, ver_patch);
2695
2696 if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2697 bt_dev_err(hdev, "rampatch file version did not match with firmware");
2698 err = -EINVAL;
2699 goto done;
2700 }
2701
2702 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2703
2704 done:
2705 release_firmware(fw);
2706
2707 return err;
2708 }
2709
2710 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2711 struct qca_version *ver,
2712 const struct qca_device_info *info)
2713 {
2714 const struct firmware *fw;
2715 char fwname[64];
2716 int err;
2717
2718 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2719 le32_to_cpu(ver->rom_version));
2720
2721 err = request_firmware(&fw, fwname, &hdev->dev);
2722 if (err) {
2723 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
2724 fwname, err);
2725 return err;
2726 }
2727
2728 bt_dev_info(hdev, "using NVM file: %s", fwname);
2729
2730 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2731
2732 release_firmware(fw);
2733
2734 return err;
2735 }
2736
2737 /* identify the ROM version and check whether patches are needed */
2738 static bool btusb_qca_need_patch(struct usb_device *udev)
2739 {
2740 struct qca_version ver;
2741
2742 if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
2743 sizeof(ver)) < 0)
2744 return false;
2745 /* only low ROM versions need patches */
2746 return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
2747 }
2748
2749 static int btusb_setup_qca(struct hci_dev *hdev)
2750 {
2751 struct btusb_data *btdata = hci_get_drvdata(hdev);
2752 struct usb_device *udev = btdata->udev;
2753 const struct qca_device_info *info = NULL;
2754 struct qca_version ver;
2755 u32 ver_rom;
2756 u8 status;
2757 int i, err;
2758
2759 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
2760 sizeof(ver));
2761 if (err < 0)
2762 return err;
2763
2764 ver_rom = le32_to_cpu(ver.rom_version);
2765 /* Don't care about high ROM versions */
2766 if (ver_rom & ~0xffffU)
2767 return 0;
2768
2769 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2770 if (ver_rom == qca_devices_table[i].rom_version)
2771 info = &qca_devices_table[i];
2772 }
2773 if (!info) {
2774 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
2775 return -ENODEV;
2776 }
2777
2778 err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
2779 sizeof(status));
2780 if (err < 0)
2781 return err;
2782
2783 if (!(status & QCA_PATCH_UPDATED)) {
2784 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2785 if (err < 0)
2786 return err;
2787 }
2788
2789 if (!(status & QCA_SYSCFG_UPDATED)) {
2790 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2791 if (err < 0)
2792 return err;
2793 }
2794
2795 return 0;
2796 }
2797
2798 #ifdef CONFIG_BT_HCIBTUSB_BCM
2799 static inline int __set_diag_interface(struct hci_dev *hdev)
2800 {
2801 struct btusb_data *data = hci_get_drvdata(hdev);
2802 struct usb_interface *intf = data->diag;
2803 int i;
2804
2805 if (!data->diag)
2806 return -ENODEV;
2807
2808 data->diag_tx_ep = NULL;
2809 data->diag_rx_ep = NULL;
2810
2811 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2812 struct usb_endpoint_descriptor *ep_desc;
2813
2814 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2815
2816 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2817 data->diag_tx_ep = ep_desc;
2818 continue;
2819 }
2820
2821 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2822 data->diag_rx_ep = ep_desc;
2823 continue;
2824 }
2825 }
2826
2827 if (!data->diag_tx_ep || !data->diag_rx_ep) {
2828 bt_dev_err(hdev, "invalid diagnostic descriptors");
2829 return -ENODEV;
2830 }
2831
2832 return 0;
2833 }
2834
2835 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
2836 {
2837 struct btusb_data *data = hci_get_drvdata(hdev);
2838 struct sk_buff *skb;
2839 struct urb *urb;
2840 unsigned int pipe;
2841
2842 if (!data->diag_tx_ep)
2843 return ERR_PTR(-ENODEV);
2844
2845 urb = usb_alloc_urb(0, GFP_KERNEL);
2846 if (!urb)
2847 return ERR_PTR(-ENOMEM);
2848
2849 skb = bt_skb_alloc(2, GFP_KERNEL);
2850 if (!skb) {
2851 usb_free_urb(urb);
2852 return ERR_PTR(-ENOMEM);
2853 }
2854
2855 skb_put_u8(skb, 0xf0);
2856 skb_put_u8(skb, enable);
2857
2858 pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
2859
2860 usb_fill_bulk_urb(urb, data->udev, pipe,
2861 skb->data, skb->len, btusb_tx_complete, skb);
2862
2863 skb->dev = (void *)hdev;
2864
2865 return urb;
2866 }
2867
2868 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
2869 {
2870 struct btusb_data *data = hci_get_drvdata(hdev);
2871 struct urb *urb;
2872
2873 if (!data->diag)
2874 return -ENODEV;
2875
2876 if (!test_bit(HCI_RUNNING, &hdev->flags))
2877 return -ENETDOWN;
2878
2879 urb = alloc_diag_urb(hdev, enable);
2880 if (IS_ERR(urb))
2881 return PTR_ERR(urb);
2882
2883 return submit_or_queue_tx_urb(hdev, urb);
2884 }
2885 #endif
2886
2887 #ifdef CONFIG_PM
2888 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
2889 {
2890 struct btusb_data *data = priv;
2891
2892 pm_wakeup_event(&data->udev->dev, 0);
2893 pm_system_wakeup();
2894
2895 /* Disable only if not already disabled (keep it balanced) */
2896 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
2897 disable_irq_nosync(irq);
2898 disable_irq_wake(irq);
2899 }
2900 return IRQ_HANDLED;
2901 }
2902
2903 static const struct of_device_id btusb_match_table[] = {
2904 { .compatible = "usb1286,204e" },
2905 { .compatible = "usbcf3,e300" }, /* QCA6174A */
2906 { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
2907 { }
2908 };
2909 MODULE_DEVICE_TABLE(of, btusb_match_table);
2910
2911 /* Use an oob wakeup pin? */
2912 static int btusb_config_oob_wake(struct hci_dev *hdev)
2913 {
2914 struct btusb_data *data = hci_get_drvdata(hdev);
2915 struct device *dev = &data->udev->dev;
2916 int irq, ret;
2917
2918 clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
2919
2920 if (!of_match_device(btusb_match_table, dev))
2921 return 0;
2922
2923 /* Move on if no IRQ specified */
2924 irq = of_irq_get_byname(dev->of_node, "wakeup");
2925 if (irq <= 0) {
2926 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
2927 return 0;
2928 }
2929
2930 irq_set_status_flags(irq, IRQ_NOAUTOEN);
2931 ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
2932 0, "OOB Wake-on-BT", data);
2933 if (ret) {
2934 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
2935 return ret;
2936 }
2937
2938 ret = device_init_wakeup(dev, true);
2939 if (ret) {
2940 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
2941 return ret;
2942 }
2943
2944 data->oob_wake_irq = irq;
2945 bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
2946 return 0;
2947 }
2948 #endif
2949
2950 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
2951 {
2952 if (dmi_check_system(btusb_needs_reset_resume_table))
2953 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
2954 }
2955
2956 static int btusb_probe(struct usb_interface *intf,
2957 const struct usb_device_id *id)
2958 {
2959 struct usb_endpoint_descriptor *ep_desc;
2960 struct gpio_desc *reset_gpio;
2961 struct btusb_data *data;
2962 struct hci_dev *hdev;
2963 unsigned ifnum_base;
2964 int i, err;
2965
2966 BT_DBG("intf %p id %p", intf, id);
2967
2968 /* interface numbers are hardcoded in the spec */
2969 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
2970 if (!(id->driver_info & BTUSB_IFNUM_2))
2971 return -ENODEV;
2972 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
2973 return -ENODEV;
2974 }
2975
2976 ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
2977
2978 if (!id->driver_info) {
2979 const struct usb_device_id *match;
2980
2981 match = usb_match_id(intf, blacklist_table);
2982 if (match)
2983 id = match;
2984 }
2985
2986 if (id->driver_info == BTUSB_IGNORE)
2987 return -ENODEV;
2988
2989 if (id->driver_info & BTUSB_ATH3012) {
2990 struct usb_device *udev = interface_to_usbdev(intf);
2991
2992 /* Old firmware would otherwise let ath3k driver load
2993 * patch and sysconfig files
2994 */
2995 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
2996 !btusb_qca_need_patch(udev))
2997 return -ENODEV;
2998 }
2999
3000 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
3001 if (!data)
3002 return -ENOMEM;
3003
3004 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3005 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3006
3007 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
3008 data->intr_ep = ep_desc;
3009 continue;
3010 }
3011
3012 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3013 data->bulk_tx_ep = ep_desc;
3014 continue;
3015 }
3016
3017 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3018 data->bulk_rx_ep = ep_desc;
3019 continue;
3020 }
3021 }
3022
3023 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
3024 return -ENODEV;
3025
3026 if (id->driver_info & BTUSB_AMP) {
3027 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
3028 data->cmdreq = 0x2b;
3029 } else {
3030 data->cmdreq_type = USB_TYPE_CLASS;
3031 data->cmdreq = 0x00;
3032 }
3033
3034 data->udev = interface_to_usbdev(intf);
3035 data->intf = intf;
3036
3037 INIT_WORK(&data->work, btusb_work);
3038 INIT_WORK(&data->waker, btusb_waker);
3039 init_usb_anchor(&data->deferred);
3040 init_usb_anchor(&data->tx_anchor);
3041 spin_lock_init(&data->txlock);
3042
3043 init_usb_anchor(&data->intr_anchor);
3044 init_usb_anchor(&data->bulk_anchor);
3045 init_usb_anchor(&data->isoc_anchor);
3046 init_usb_anchor(&data->diag_anchor);
3047 spin_lock_init(&data->rxlock);
3048
3049 if (id->driver_info & BTUSB_INTEL_NEW) {
3050 data->recv_event = btusb_recv_event_intel;
3051 data->recv_bulk = btusb_recv_bulk_intel;
3052 set_bit(BTUSB_BOOTLOADER, &data->flags);
3053 } else {
3054 data->recv_event = hci_recv_frame;
3055 data->recv_bulk = btusb_recv_bulk;
3056 }
3057
3058 hdev = hci_alloc_dev();
3059 if (!hdev)
3060 return -ENOMEM;
3061
3062 hdev->bus = HCI_USB;
3063 hci_set_drvdata(hdev, data);
3064
3065 if (id->driver_info & BTUSB_AMP)
3066 hdev->dev_type = HCI_AMP;
3067 else
3068 hdev->dev_type = HCI_PRIMARY;
3069
3070 data->hdev = hdev;
3071
3072 SET_HCIDEV_DEV(hdev, &intf->dev);
3073
3074 reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
3075 GPIOD_OUT_LOW);
3076 if (IS_ERR(reset_gpio)) {
3077 err = PTR_ERR(reset_gpio);
3078 goto out_free_dev;
3079 } else if (reset_gpio) {
3080 data->reset_gpio = reset_gpio;
3081 }
3082
3083 hdev->open = btusb_open;
3084 hdev->close = btusb_close;
3085 hdev->flush = btusb_flush;
3086 hdev->send = btusb_send_frame;
3087 hdev->notify = btusb_notify;
3088
3089 #ifdef CONFIG_PM
3090 err = btusb_config_oob_wake(hdev);
3091 if (err)
3092 goto out_free_dev;
3093
3094 /* Marvell devices may need a specific chip configuration */
3095 if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
3096 err = marvell_config_oob_wake(hdev);
3097 if (err)
3098 goto out_free_dev;
3099 }
3100 #endif
3101 if (id->driver_info & BTUSB_CW6622)
3102 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3103
3104 if (id->driver_info & BTUSB_BCM2045)
3105 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3106
3107 if (id->driver_info & BTUSB_BCM92035)
3108 hdev->setup = btusb_setup_bcm92035;
3109
3110 #ifdef CONFIG_BT_HCIBTUSB_BCM
3111 if (id->driver_info & BTUSB_BCM_PATCHRAM) {
3112 hdev->manufacturer = 15;
3113 hdev->setup = btbcm_setup_patchram;
3114 hdev->set_diag = btusb_bcm_set_diag;
3115 hdev->set_bdaddr = btbcm_set_bdaddr;
3116
3117 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3118 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3119 }
3120
3121 if (id->driver_info & BTUSB_BCM_APPLE) {
3122 hdev->manufacturer = 15;
3123 hdev->setup = btbcm_setup_apple;
3124 hdev->set_diag = btusb_bcm_set_diag;
3125
3126 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3127 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3128 }
3129 #endif
3130
3131 if (id->driver_info & BTUSB_INTEL) {
3132 hdev->manufacturer = 2;
3133 hdev->setup = btusb_setup_intel;
3134 hdev->shutdown = btusb_shutdown_intel;
3135 hdev->set_diag = btintel_set_diag_mfg;
3136 hdev->set_bdaddr = btintel_set_bdaddr;
3137 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3138 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3139 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3140 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3141 }
3142
3143 if (id->driver_info & BTUSB_INTEL_NEW) {
3144 hdev->manufacturer = 2;
3145 hdev->send = btusb_send_frame_intel;
3146 hdev->setup = btusb_setup_intel_new;
3147 hdev->shutdown = btusb_shutdown_intel_new;
3148 hdev->hw_error = btintel_hw_error;
3149 hdev->set_diag = btintel_set_diag;
3150 hdev->set_bdaddr = btintel_set_bdaddr;
3151 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3152 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3153 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3154 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3155 }
3156
3157 if (id->driver_info & BTUSB_MARVELL)
3158 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3159
3160 if (id->driver_info & BTUSB_SWAVE) {
3161 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3162 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3163 }
3164
3165 if (id->driver_info & BTUSB_INTEL_BOOT) {
3166 hdev->manufacturer = 2;
3167 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3168 }
3169
3170 if (id->driver_info & BTUSB_ATH3012) {
3171 data->setup_on_usb = btusb_setup_qca;
3172 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3173 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3174 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3175 }
3176
3177 if (id->driver_info & BTUSB_QCA_ROME) {
3178 data->setup_on_usb = btusb_setup_qca;
3179 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3180 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3181 btusb_check_needs_reset_resume(intf);
3182 }
3183
3184 #ifdef CONFIG_BT_HCIBTUSB_RTL
3185 if (id->driver_info & BTUSB_REALTEK) {
3186 hdev->setup = btrtl_setup_realtek;
3187
3188 /* Realtek devices lose their updated firmware over suspend,
3189 * but the USB hub doesn't notice any status change.
3190 * Explicitly request a device reset on resume.
3191 */
3192 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3193 }
3194 #endif
3195
3196 if (id->driver_info & BTUSB_AMP) {
3197 /* AMP controllers do not support SCO packets */
3198 data->isoc = NULL;
3199 } else {
3200 /* Interface orders are hardcoded in the specification */
3201 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
3202 data->isoc_ifnum = ifnum_base + 1;
3203 }
3204
3205 if (!reset)
3206 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3207
3208 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3209 if (!disable_scofix)
3210 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3211 }
3212
3213 if (id->driver_info & BTUSB_BROKEN_ISOC)
3214 data->isoc = NULL;
3215
3216 if (id->driver_info & BTUSB_DIGIANSWER) {
3217 data->cmdreq_type = USB_TYPE_VENDOR;
3218 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3219 }
3220
3221 if (id->driver_info & BTUSB_CSR) {
3222 struct usb_device *udev = data->udev;
3223 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3224
3225 /* Old firmware would otherwise execute USB reset */
3226 if (bcdDevice < 0x117)
3227 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3228
3229 /* Fake CSR devices with broken commands */
3230 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3231 hdev->setup = btusb_setup_csr;
3232
3233 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3234 }
3235
3236 if (id->driver_info & BTUSB_SNIFFER) {
3237 struct usb_device *udev = data->udev;
3238
3239 /* New sniffer firmware has crippled HCI interface */
3240 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3241 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3242 }
3243
3244 if (id->driver_info & BTUSB_INTEL_BOOT) {
3245 /* A bug in the bootloader causes that interrupt interface is
3246 * only enabled after receiving SetInterface(0, AltSetting=0).
3247 */
3248 err = usb_set_interface(data->udev, 0, 0);
3249 if (err < 0) {
3250 BT_ERR("failed to set interface 0, alt 0 %d", err);
3251 goto out_free_dev;
3252 }
3253 }
3254
3255 if (data->isoc) {
3256 err = usb_driver_claim_interface(&btusb_driver,
3257 data->isoc, data);
3258 if (err < 0)
3259 goto out_free_dev;
3260 }
3261
3262 #ifdef CONFIG_BT_HCIBTUSB_BCM
3263 if (data->diag) {
3264 if (!usb_driver_claim_interface(&btusb_driver,
3265 data->diag, data))
3266 __set_diag_interface(hdev);
3267 else
3268 data->diag = NULL;
3269 }
3270 #endif
3271
3272 if (enable_autosuspend)
3273 usb_enable_autosuspend(data->udev);
3274
3275 err = hci_register_dev(hdev);
3276 if (err < 0)
3277 goto out_free_dev;
3278
3279 usb_set_intfdata(intf, data);
3280
3281 return 0;
3282
3283 out_free_dev:
3284 if (data->reset_gpio)
3285 gpiod_put(data->reset_gpio);
3286 hci_free_dev(hdev);
3287 return err;
3288 }
3289
3290 static void btusb_disconnect(struct usb_interface *intf)
3291 {
3292 struct btusb_data *data = usb_get_intfdata(intf);
3293 struct hci_dev *hdev;
3294
3295 BT_DBG("intf %p", intf);
3296
3297 if (!data)
3298 return;
3299
3300 hdev = data->hdev;
3301 usb_set_intfdata(data->intf, NULL);
3302
3303 if (data->isoc)
3304 usb_set_intfdata(data->isoc, NULL);
3305
3306 if (data->diag)
3307 usb_set_intfdata(data->diag, NULL);
3308
3309 hci_unregister_dev(hdev);
3310
3311 if (intf == data->intf) {
3312 if (data->isoc)
3313 usb_driver_release_interface(&btusb_driver, data->isoc);
3314 if (data->diag)
3315 usb_driver_release_interface(&btusb_driver, data->diag);
3316 } else if (intf == data->isoc) {
3317 if (data->diag)
3318 usb_driver_release_interface(&btusb_driver, data->diag);
3319 usb_driver_release_interface(&btusb_driver, data->intf);
3320 } else if (intf == data->diag) {
3321 usb_driver_release_interface(&btusb_driver, data->intf);
3322 if (data->isoc)
3323 usb_driver_release_interface(&btusb_driver, data->isoc);
3324 }
3325
3326 if (data->oob_wake_irq)
3327 device_init_wakeup(&data->udev->dev, false);
3328
3329 if (data->reset_gpio)
3330 gpiod_put(data->reset_gpio);
3331
3332 hci_free_dev(hdev);
3333 }
3334
3335 #ifdef CONFIG_PM
3336 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3337 {
3338 struct btusb_data *data = usb_get_intfdata(intf);
3339
3340 BT_DBG("intf %p", intf);
3341
3342 if (data->suspend_count++)
3343 return 0;
3344
3345 spin_lock_irq(&data->txlock);
3346 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3347 set_bit(BTUSB_SUSPENDING, &data->flags);
3348 spin_unlock_irq(&data->txlock);
3349 } else {
3350 spin_unlock_irq(&data->txlock);
3351 data->suspend_count--;
3352 return -EBUSY;
3353 }
3354
3355 cancel_work_sync(&data->work);
3356
3357 btusb_stop_traffic(data);
3358 usb_kill_anchored_urbs(&data->tx_anchor);
3359
3360 if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
3361 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3362 enable_irq_wake(data->oob_wake_irq);
3363 enable_irq(data->oob_wake_irq);
3364 }
3365
3366 return 0;
3367 }
3368
3369 static void play_deferred(struct btusb_data *data)
3370 {
3371 struct urb *urb;
3372 int err;
3373
3374 while ((urb = usb_get_from_anchor(&data->deferred))) {
3375 usb_anchor_urb(urb, &data->tx_anchor);
3376
3377 err = usb_submit_urb(urb, GFP_ATOMIC);
3378 if (err < 0) {
3379 if (err != -EPERM && err != -ENODEV)
3380 BT_ERR("%s urb %p submission failed (%d)",
3381 data->hdev->name, urb, -err);
3382 kfree(urb->setup_packet);
3383 usb_unanchor_urb(urb);
3384 usb_free_urb(urb);
3385 break;
3386 }
3387
3388 data->tx_in_flight++;
3389 usb_free_urb(urb);
3390 }
3391
3392 /* Cleanup the rest deferred urbs. */
3393 while ((urb = usb_get_from_anchor(&data->deferred))) {
3394 kfree(urb->setup_packet);
3395 usb_free_urb(urb);
3396 }
3397 }
3398
3399 static int btusb_resume(struct usb_interface *intf)
3400 {
3401 struct btusb_data *data = usb_get_intfdata(intf);
3402 struct hci_dev *hdev = data->hdev;
3403 int err = 0;
3404
3405 BT_DBG("intf %p", intf);
3406
3407 if (--data->suspend_count)
3408 return 0;
3409
3410 /* Disable only if not already disabled (keep it balanced) */
3411 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3412 disable_irq(data->oob_wake_irq);
3413 disable_irq_wake(data->oob_wake_irq);
3414 }
3415
3416 if (!test_bit(HCI_RUNNING, &hdev->flags))
3417 goto done;
3418
3419 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3420 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3421 if (err < 0) {
3422 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3423 goto failed;
3424 }
3425 }
3426
3427 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3428 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3429 if (err < 0) {
3430 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3431 goto failed;
3432 }
3433
3434 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3435 }
3436
3437 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3438 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3439 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3440 else
3441 btusb_submit_isoc_urb(hdev, GFP_NOIO);
3442 }
3443
3444 spin_lock_irq(&data->txlock);
3445 play_deferred(data);
3446 clear_bit(BTUSB_SUSPENDING, &data->flags);
3447 spin_unlock_irq(&data->txlock);
3448 schedule_work(&data->work);
3449
3450 return 0;
3451
3452 failed:
3453 usb_scuttle_anchored_urbs(&data->deferred);
3454 done:
3455 spin_lock_irq(&data->txlock);
3456 clear_bit(BTUSB_SUSPENDING, &data->flags);
3457 spin_unlock_irq(&data->txlock);
3458
3459 return err;
3460 }
3461 #endif
3462
3463 static struct usb_driver btusb_driver = {
3464 .name = "btusb",
3465 .probe = btusb_probe,
3466 .disconnect = btusb_disconnect,
3467 #ifdef CONFIG_PM
3468 .suspend = btusb_suspend,
3469 .resume = btusb_resume,
3470 #endif
3471 .id_table = btusb_table,
3472 .supports_autosuspend = 1,
3473 .disable_hub_initiated_lpm = 1,
3474 };
3475
3476 module_usb_driver(btusb_driver);
3477
3478 module_param(disable_scofix, bool, 0644);
3479 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3480
3481 module_param(force_scofix, bool, 0644);
3482 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3483
3484 module_param(enable_autosuspend, bool, 0644);
3485 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
3486
3487 module_param(reset, bool, 0644);
3488 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3489
3490 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3491 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3492 MODULE_VERSION(VERSION);
3493 MODULE_LICENSE("GPL");
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