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rds: tcp: allow progress of rds_conn_shutdown if the rds_connection is marked ERROR...
[linux-2.6/btrfs-unstable.git] / drivers / bluetooth / btusb.c
blob1c8094ef3f228414bb427c258b9201034e01004d
1 /*
2 *
3 * Generic Bluetooth USB driver
4 *
5 * Copyright (C) 2005-2008 Marcel Holtmann <marcel@holtmann.org>
6 *
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24 #include <linux/module.h>
25 #include <linux/usb.h>
26 #include <linux/firmware.h>
27 #include <linux/of_device.h>
28 #include <linux/of_irq.h>
29 #include <asm/unaligned.h>
30
31 #include <net/bluetooth/bluetooth.h>
32 #include <net/bluetooth/hci_core.h>
33
34 #include "btintel.h"
35 #include "btbcm.h"
36 #include "btrtl.h"
37
38 #define VERSION "0.8"
39
40 static bool disable_scofix;
41 static bool force_scofix;
42
43 static bool reset = true;
44
45 static struct usb_driver btusb_driver;
46
47 #define BTUSB_IGNORE 0x01
48 #define BTUSB_DIGIANSWER 0x02
49 #define BTUSB_CSR 0x04
50 #define BTUSB_SNIFFER 0x08
51 #define BTUSB_BCM92035 0x10
52 #define BTUSB_BROKEN_ISOC 0x20
53 #define BTUSB_WRONG_SCO_MTU 0x40
54 #define BTUSB_ATH3012 0x80
55 #define BTUSB_INTEL 0x100
56 #define BTUSB_INTEL_BOOT 0x200
57 #define BTUSB_BCM_PATCHRAM 0x400
58 #define BTUSB_MARVELL 0x800
59 #define BTUSB_SWAVE 0x1000
60 #define BTUSB_INTEL_NEW 0x2000
61 #define BTUSB_AMP 0x4000
62 #define BTUSB_QCA_ROME 0x8000
63 #define BTUSB_BCM_APPLE 0x10000
64 #define BTUSB_REALTEK 0x20000
65 #define BTUSB_BCM2045 0x40000
66 #define BTUSB_IFNUM_2 0x80000
67 #define BTUSB_CW6622 0x100000
68
69 static const struct usb_device_id btusb_table[] = {
70 /* Generic Bluetooth USB device */
71 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
72
73 /* Generic Bluetooth AMP device */
74 { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
75
76 /* Generic Bluetooth USB interface */
77 { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
78
79 /* Apple-specific (Broadcom) devices */
80 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
81 .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
82
83 /* MediaTek MT76x0E */
84 { USB_DEVICE(0x0e8d, 0x763f) },
85
86 /* Broadcom SoftSailing reporting vendor specific */
87 { USB_DEVICE(0x0a5c, 0x21e1) },
88
89 /* Apple MacBookPro 7,1 */
90 { USB_DEVICE(0x05ac, 0x8213) },
91
92 /* Apple iMac11,1 */
93 { USB_DEVICE(0x05ac, 0x8215) },
94
95 /* Apple MacBookPro6,2 */
96 { USB_DEVICE(0x05ac, 0x8218) },
97
98 /* Apple MacBookAir3,1, MacBookAir3,2 */
99 { USB_DEVICE(0x05ac, 0x821b) },
100
101 /* Apple MacBookAir4,1 */
102 { USB_DEVICE(0x05ac, 0x821f) },
103
104 /* Apple MacBookPro8,2 */
105 { USB_DEVICE(0x05ac, 0x821a) },
106
107 /* Apple MacMini5,1 */
108 { USB_DEVICE(0x05ac, 0x8281) },
109
110 /* AVM BlueFRITZ! USB v2.0 */
111 { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
112
113 /* Bluetooth Ultraport Module from IBM */
114 { USB_DEVICE(0x04bf, 0x030a) },
115
116 /* ALPS Modules with non-standard id */
117 { USB_DEVICE(0x044e, 0x3001) },
118 { USB_DEVICE(0x044e, 0x3002) },
119
120 /* Ericsson with non-standard id */
121 { USB_DEVICE(0x0bdb, 0x1002) },
122
123 /* Canyon CN-BTU1 with HID interfaces */
124 { USB_DEVICE(0x0c10, 0x0000) },
125
126 /* Broadcom BCM20702A0 */
127 { USB_DEVICE(0x413c, 0x8197) },
128
129 /* Broadcom BCM20702B0 (Dynex/Insignia) */
130 { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
131
132 /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
133 { USB_DEVICE(0x105b, 0xe065), .driver_info = BTUSB_BCM_PATCHRAM },
134
135 /* Broadcom BCM920703 (HTC Vive) */
136 { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
137 .driver_info = BTUSB_BCM_PATCHRAM },
138
139 /* Foxconn - Hon Hai */
140 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
141 .driver_info = BTUSB_BCM_PATCHRAM },
142
143 /* Lite-On Technology - Broadcom based */
144 { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
145 .driver_info = BTUSB_BCM_PATCHRAM },
146
147 /* Broadcom devices with vendor specific id */
148 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
149 .driver_info = BTUSB_BCM_PATCHRAM },
150
151 /* ASUSTek Computer - Broadcom based */
152 { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
153 .driver_info = BTUSB_BCM_PATCHRAM },
154
155 /* Belkin F8065bf - Broadcom based */
156 { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
157 .driver_info = BTUSB_BCM_PATCHRAM },
158
159 /* IMC Networks - Broadcom based */
160 { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
161 .driver_info = BTUSB_BCM_PATCHRAM },
162
163 /* Dell Computer - Broadcom based */
164 { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
165 .driver_info = BTUSB_BCM_PATCHRAM },
166
167 /* Toshiba Corp - Broadcom based */
168 { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
169 .driver_info = BTUSB_BCM_PATCHRAM },
170
171 /* Intel Bluetooth USB Bootloader (RAM module) */
172 { USB_DEVICE(0x8087, 0x0a5a),
173 .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
174
175 { } /* Terminating entry */
176 };
177
178 MODULE_DEVICE_TABLE(usb, btusb_table);
179
180 static const struct usb_device_id blacklist_table[] = {
181 /* CSR BlueCore devices */
182 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
183
184 /* Broadcom BCM2033 without firmware */
185 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
186
187 /* Broadcom BCM2045 devices */
188 { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
189
190 /* Atheros 3011 with sflash firmware */
191 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
192 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
193 { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
194 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
195 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
196 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
197 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
198
199 /* Atheros AR9285 Malbec with sflash firmware */
200 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
201
202 /* Atheros 3012 with sflash firmware */
203 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
204 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
205 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
206 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
207 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
208 { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
209 { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
210 { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
211 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
212 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
213 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
214 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
215 { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
216 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
217 { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
218 { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
219 { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
220 { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
221 { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
222 { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
223 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
224 { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
225 { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
226 { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
227 { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
228 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
229 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
230 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
231 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
232 { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
233 { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
234 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
235 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
236 { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
237 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
238 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
239 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
240 { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
241 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
242 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
243 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
244 { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
245 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
246 { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
247 { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
248 { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
249 { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
250 { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
251 { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
252 { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
253
254 /* Atheros AR5BBU12 with sflash firmware */
255 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
256
257 /* Atheros AR5BBU12 with sflash firmware */
258 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
259 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
260
261 /* QCA ROME chipset */
262 { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
263 { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME },
264 { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
265 { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
266 { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME },
267 { USB_DEVICE(0x04ca, 0x3011), .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, 0x07da), .driver_info = BTUSB_CSR },
332 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
333 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
334 { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
335 { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL },
336
337 /* Other Intel Bluetooth devices */
338 { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
339 .driver_info = BTUSB_IGNORE },
340
341 /* Realtek Bluetooth devices */
342 { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
343 .driver_info = BTUSB_REALTEK },
344
345 /* Additional Realtek 8723AE Bluetooth devices */
346 { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
347 { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
348
349 /* Additional Realtek 8723BE Bluetooth devices */
350 { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
351 { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
352 { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
353 { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
354 { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
355
356 /* Additional Realtek 8821AE Bluetooth devices */
357 { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
358 { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
359 { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
360 { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
361 { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
362
363 /* Silicon Wave based devices */
364 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
365
366 { } /* Terminating entry */
367 };
368
369 #define BTUSB_MAX_ISOC_FRAMES 10
370
371 #define BTUSB_INTR_RUNNING 0
372 #define BTUSB_BULK_RUNNING 1
373 #define BTUSB_ISOC_RUNNING 2
374 #define BTUSB_SUSPENDING 3
375 #define BTUSB_DID_ISO_RESUME 4
376 #define BTUSB_BOOTLOADER 5
377 #define BTUSB_DOWNLOADING 6
378 #define BTUSB_FIRMWARE_LOADED 7
379 #define BTUSB_FIRMWARE_FAILED 8
380 #define BTUSB_BOOTING 9
381 #define BTUSB_RESET_RESUME 10
382 #define BTUSB_DIAG_RUNNING 11
383 #define BTUSB_OOB_WAKE_ENABLED 12
384
385 struct btusb_data {
386 struct hci_dev *hdev;
387 struct usb_device *udev;
388 struct usb_interface *intf;
389 struct usb_interface *isoc;
390 struct usb_interface *diag;
391
392 unsigned long flags;
393
394 struct work_struct work;
395 struct work_struct waker;
396
397 struct usb_anchor deferred;
398 struct usb_anchor tx_anchor;
399 int tx_in_flight;
400 spinlock_t txlock;
401
402 struct usb_anchor intr_anchor;
403 struct usb_anchor bulk_anchor;
404 struct usb_anchor isoc_anchor;
405 struct usb_anchor diag_anchor;
406 spinlock_t rxlock;
407
408 struct sk_buff *evt_skb;
409 struct sk_buff *acl_skb;
410 struct sk_buff *sco_skb;
411
412 struct usb_endpoint_descriptor *intr_ep;
413 struct usb_endpoint_descriptor *bulk_tx_ep;
414 struct usb_endpoint_descriptor *bulk_rx_ep;
415 struct usb_endpoint_descriptor *isoc_tx_ep;
416 struct usb_endpoint_descriptor *isoc_rx_ep;
417 struct usb_endpoint_descriptor *diag_tx_ep;
418 struct usb_endpoint_descriptor *diag_rx_ep;
419
420 __u8 cmdreq_type;
421 __u8 cmdreq;
422
423 unsigned int sco_num;
424 int isoc_altsetting;
425 int suspend_count;
426
427 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
428 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
429
430 int (*setup_on_usb)(struct hci_dev *hdev);
431
432 int oob_wake_irq; /* irq for out-of-band wake-on-bt */
433 };
434
435 static inline void btusb_free_frags(struct btusb_data *data)
436 {
437 unsigned long flags;
438
439 spin_lock_irqsave(&data->rxlock, flags);
440
441 kfree_skb(data->evt_skb);
442 data->evt_skb = NULL;
443
444 kfree_skb(data->acl_skb);
445 data->acl_skb = NULL;
446
447 kfree_skb(data->sco_skb);
448 data->sco_skb = NULL;
449
450 spin_unlock_irqrestore(&data->rxlock, flags);
451 }
452
453 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
454 {
455 struct sk_buff *skb;
456 int err = 0;
457
458 spin_lock(&data->rxlock);
459 skb = data->evt_skb;
460
461 while (count) {
462 int len;
463
464 if (!skb) {
465 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
466 if (!skb) {
467 err = -ENOMEM;
468 break;
469 }
470
471 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
472 hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
473 }
474
475 len = min_t(uint, hci_skb_expect(skb), count);
476 memcpy(skb_put(skb, len), buffer, len);
477
478 count -= len;
479 buffer += len;
480 hci_skb_expect(skb) -= len;
481
482 if (skb->len == HCI_EVENT_HDR_SIZE) {
483 /* Complete event header */
484 hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
485
486 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
487 kfree_skb(skb);
488 skb = NULL;
489
490 err = -EILSEQ;
491 break;
492 }
493 }
494
495 if (!hci_skb_expect(skb)) {
496 /* Complete frame */
497 data->recv_event(data->hdev, skb);
498 skb = NULL;
499 }
500 }
501
502 data->evt_skb = skb;
503 spin_unlock(&data->rxlock);
504
505 return err;
506 }
507
508 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
509 {
510 struct sk_buff *skb;
511 int err = 0;
512
513 spin_lock(&data->rxlock);
514 skb = data->acl_skb;
515
516 while (count) {
517 int len;
518
519 if (!skb) {
520 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
521 if (!skb) {
522 err = -ENOMEM;
523 break;
524 }
525
526 hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
527 hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
528 }
529
530 len = min_t(uint, hci_skb_expect(skb), count);
531 memcpy(skb_put(skb, len), buffer, len);
532
533 count -= len;
534 buffer += len;
535 hci_skb_expect(skb) -= len;
536
537 if (skb->len == HCI_ACL_HDR_SIZE) {
538 __le16 dlen = hci_acl_hdr(skb)->dlen;
539
540 /* Complete ACL header */
541 hci_skb_expect(skb) = __le16_to_cpu(dlen);
542
543 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
544 kfree_skb(skb);
545 skb = NULL;
546
547 err = -EILSEQ;
548 break;
549 }
550 }
551
552 if (!hci_skb_expect(skb)) {
553 /* Complete frame */
554 hci_recv_frame(data->hdev, skb);
555 skb = NULL;
556 }
557 }
558
559 data->acl_skb = skb;
560 spin_unlock(&data->rxlock);
561
562 return err;
563 }
564
565 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
566 {
567 struct sk_buff *skb;
568 int err = 0;
569
570 spin_lock(&data->rxlock);
571 skb = data->sco_skb;
572
573 while (count) {
574 int len;
575
576 if (!skb) {
577 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
578 if (!skb) {
579 err = -ENOMEM;
580 break;
581 }
582
583 hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
584 hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
585 }
586
587 len = min_t(uint, hci_skb_expect(skb), count);
588 memcpy(skb_put(skb, len), buffer, len);
589
590 count -= len;
591 buffer += len;
592 hci_skb_expect(skb) -= len;
593
594 if (skb->len == HCI_SCO_HDR_SIZE) {
595 /* Complete SCO header */
596 hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
597
598 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
599 kfree_skb(skb);
600 skb = NULL;
601
602 err = -EILSEQ;
603 break;
604 }
605 }
606
607 if (!hci_skb_expect(skb)) {
608 /* Complete frame */
609 hci_recv_frame(data->hdev, skb);
610 skb = NULL;
611 }
612 }
613
614 data->sco_skb = skb;
615 spin_unlock(&data->rxlock);
616
617 return err;
618 }
619
620 static void btusb_intr_complete(struct urb *urb)
621 {
622 struct hci_dev *hdev = urb->context;
623 struct btusb_data *data = hci_get_drvdata(hdev);
624 int err;
625
626 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
627 urb->actual_length);
628
629 if (!test_bit(HCI_RUNNING, &hdev->flags))
630 return;
631
632 if (urb->status == 0) {
633 hdev->stat.byte_rx += urb->actual_length;
634
635 if (btusb_recv_intr(data, urb->transfer_buffer,
636 urb->actual_length) < 0) {
637 BT_ERR("%s corrupted event packet", hdev->name);
638 hdev->stat.err_rx++;
639 }
640 } else if (urb->status == -ENOENT) {
641 /* Avoid suspend failed when usb_kill_urb */
642 return;
643 }
644
645 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
646 return;
647
648 usb_mark_last_busy(data->udev);
649 usb_anchor_urb(urb, &data->intr_anchor);
650
651 err = usb_submit_urb(urb, GFP_ATOMIC);
652 if (err < 0) {
653 /* -EPERM: urb is being killed;
654 * -ENODEV: device got disconnected */
655 if (err != -EPERM && err != -ENODEV)
656 BT_ERR("%s urb %p failed to resubmit (%d)",
657 hdev->name, urb, -err);
658 usb_unanchor_urb(urb);
659 }
660 }
661
662 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
663 {
664 struct btusb_data *data = hci_get_drvdata(hdev);
665 struct urb *urb;
666 unsigned char *buf;
667 unsigned int pipe;
668 int err, size;
669
670 BT_DBG("%s", hdev->name);
671
672 if (!data->intr_ep)
673 return -ENODEV;
674
675 urb = usb_alloc_urb(0, mem_flags);
676 if (!urb)
677 return -ENOMEM;
678
679 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
680
681 buf = kmalloc(size, mem_flags);
682 if (!buf) {
683 usb_free_urb(urb);
684 return -ENOMEM;
685 }
686
687 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
688
689 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
690 btusb_intr_complete, hdev, data->intr_ep->bInterval);
691
692 urb->transfer_flags |= URB_FREE_BUFFER;
693
694 usb_anchor_urb(urb, &data->intr_anchor);
695
696 err = usb_submit_urb(urb, mem_flags);
697 if (err < 0) {
698 if (err != -EPERM && err != -ENODEV)
699 BT_ERR("%s urb %p submission failed (%d)",
700 hdev->name, urb, -err);
701 usb_unanchor_urb(urb);
702 }
703
704 usb_free_urb(urb);
705
706 return err;
707 }
708
709 static void btusb_bulk_complete(struct urb *urb)
710 {
711 struct hci_dev *hdev = urb->context;
712 struct btusb_data *data = hci_get_drvdata(hdev);
713 int err;
714
715 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
716 urb->actual_length);
717
718 if (!test_bit(HCI_RUNNING, &hdev->flags))
719 return;
720
721 if (urb->status == 0) {
722 hdev->stat.byte_rx += urb->actual_length;
723
724 if (data->recv_bulk(data, urb->transfer_buffer,
725 urb->actual_length) < 0) {
726 BT_ERR("%s corrupted ACL packet", hdev->name);
727 hdev->stat.err_rx++;
728 }
729 } else if (urb->status == -ENOENT) {
730 /* Avoid suspend failed when usb_kill_urb */
731 return;
732 }
733
734 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
735 return;
736
737 usb_anchor_urb(urb, &data->bulk_anchor);
738 usb_mark_last_busy(data->udev);
739
740 err = usb_submit_urb(urb, GFP_ATOMIC);
741 if (err < 0) {
742 /* -EPERM: urb is being killed;
743 * -ENODEV: device got disconnected */
744 if (err != -EPERM && err != -ENODEV)
745 BT_ERR("%s urb %p failed to resubmit (%d)",
746 hdev->name, urb, -err);
747 usb_unanchor_urb(urb);
748 }
749 }
750
751 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
752 {
753 struct btusb_data *data = hci_get_drvdata(hdev);
754 struct urb *urb;
755 unsigned char *buf;
756 unsigned int pipe;
757 int err, size = HCI_MAX_FRAME_SIZE;
758
759 BT_DBG("%s", hdev->name);
760
761 if (!data->bulk_rx_ep)
762 return -ENODEV;
763
764 urb = usb_alloc_urb(0, mem_flags);
765 if (!urb)
766 return -ENOMEM;
767
768 buf = kmalloc(size, mem_flags);
769 if (!buf) {
770 usb_free_urb(urb);
771 return -ENOMEM;
772 }
773
774 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
775
776 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
777 btusb_bulk_complete, hdev);
778
779 urb->transfer_flags |= URB_FREE_BUFFER;
780
781 usb_mark_last_busy(data->udev);
782 usb_anchor_urb(urb, &data->bulk_anchor);
783
784 err = usb_submit_urb(urb, mem_flags);
785 if (err < 0) {
786 if (err != -EPERM && err != -ENODEV)
787 BT_ERR("%s urb %p submission failed (%d)",
788 hdev->name, urb, -err);
789 usb_unanchor_urb(urb);
790 }
791
792 usb_free_urb(urb);
793
794 return err;
795 }
796
797 static void btusb_isoc_complete(struct urb *urb)
798 {
799 struct hci_dev *hdev = urb->context;
800 struct btusb_data *data = hci_get_drvdata(hdev);
801 int i, err;
802
803 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
804 urb->actual_length);
805
806 if (!test_bit(HCI_RUNNING, &hdev->flags))
807 return;
808
809 if (urb->status == 0) {
810 for (i = 0; i < urb->number_of_packets; i++) {
811 unsigned int offset = urb->iso_frame_desc[i].offset;
812 unsigned int length = urb->iso_frame_desc[i].actual_length;
813
814 if (urb->iso_frame_desc[i].status)
815 continue;
816
817 hdev->stat.byte_rx += length;
818
819 if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
820 length) < 0) {
821 BT_ERR("%s corrupted SCO packet", hdev->name);
822 hdev->stat.err_rx++;
823 }
824 }
825 } else if (urb->status == -ENOENT) {
826 /* Avoid suspend failed when usb_kill_urb */
827 return;
828 }
829
830 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
831 return;
832
833 usb_anchor_urb(urb, &data->isoc_anchor);
834
835 err = usb_submit_urb(urb, GFP_ATOMIC);
836 if (err < 0) {
837 /* -EPERM: urb is being killed;
838 * -ENODEV: device got disconnected */
839 if (err != -EPERM && err != -ENODEV)
840 BT_ERR("%s urb %p failed to resubmit (%d)",
841 hdev->name, urb, -err);
842 usb_unanchor_urb(urb);
843 }
844 }
845
846 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
847 {
848 int i, offset = 0;
849
850 BT_DBG("len %d mtu %d", len, mtu);
851
852 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
853 i++, offset += mtu, len -= mtu) {
854 urb->iso_frame_desc[i].offset = offset;
855 urb->iso_frame_desc[i].length = mtu;
856 }
857
858 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
859 urb->iso_frame_desc[i].offset = offset;
860 urb->iso_frame_desc[i].length = len;
861 i++;
862 }
863
864 urb->number_of_packets = i;
865 }
866
867 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
868 {
869 struct btusb_data *data = hci_get_drvdata(hdev);
870 struct urb *urb;
871 unsigned char *buf;
872 unsigned int pipe;
873 int err, size;
874
875 BT_DBG("%s", hdev->name);
876
877 if (!data->isoc_rx_ep)
878 return -ENODEV;
879
880 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
881 if (!urb)
882 return -ENOMEM;
883
884 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
885 BTUSB_MAX_ISOC_FRAMES;
886
887 buf = kmalloc(size, mem_flags);
888 if (!buf) {
889 usb_free_urb(urb);
890 return -ENOMEM;
891 }
892
893 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
894
895 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
896 hdev, data->isoc_rx_ep->bInterval);
897
898 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
899
900 __fill_isoc_descriptor(urb, size,
901 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
902
903 usb_anchor_urb(urb, &data->isoc_anchor);
904
905 err = usb_submit_urb(urb, mem_flags);
906 if (err < 0) {
907 if (err != -EPERM && err != -ENODEV)
908 BT_ERR("%s urb %p submission failed (%d)",
909 hdev->name, urb, -err);
910 usb_unanchor_urb(urb);
911 }
912
913 usb_free_urb(urb);
914
915 return err;
916 }
917
918 static void btusb_diag_complete(struct urb *urb)
919 {
920 struct hci_dev *hdev = urb->context;
921 struct btusb_data *data = hci_get_drvdata(hdev);
922 int err;
923
924 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
925 urb->actual_length);
926
927 if (urb->status == 0) {
928 struct sk_buff *skb;
929
930 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
931 if (skb) {
932 memcpy(skb_put(skb, urb->actual_length),
933 urb->transfer_buffer, urb->actual_length);
934 hci_recv_diag(hdev, skb);
935 }
936 } else if (urb->status == -ENOENT) {
937 /* Avoid suspend failed when usb_kill_urb */
938 return;
939 }
940
941 if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
942 return;
943
944 usb_anchor_urb(urb, &data->diag_anchor);
945 usb_mark_last_busy(data->udev);
946
947 err = usb_submit_urb(urb, GFP_ATOMIC);
948 if (err < 0) {
949 /* -EPERM: urb is being killed;
950 * -ENODEV: device got disconnected */
951 if (err != -EPERM && err != -ENODEV)
952 BT_ERR("%s urb %p failed to resubmit (%d)",
953 hdev->name, urb, -err);
954 usb_unanchor_urb(urb);
955 }
956 }
957
958 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
959 {
960 struct btusb_data *data = hci_get_drvdata(hdev);
961 struct urb *urb;
962 unsigned char *buf;
963 unsigned int pipe;
964 int err, size = HCI_MAX_FRAME_SIZE;
965
966 BT_DBG("%s", hdev->name);
967
968 if (!data->diag_rx_ep)
969 return -ENODEV;
970
971 urb = usb_alloc_urb(0, mem_flags);
972 if (!urb)
973 return -ENOMEM;
974
975 buf = kmalloc(size, mem_flags);
976 if (!buf) {
977 usb_free_urb(urb);
978 return -ENOMEM;
979 }
980
981 pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
982
983 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
984 btusb_diag_complete, hdev);
985
986 urb->transfer_flags |= URB_FREE_BUFFER;
987
988 usb_mark_last_busy(data->udev);
989 usb_anchor_urb(urb, &data->diag_anchor);
990
991 err = usb_submit_urb(urb, mem_flags);
992 if (err < 0) {
993 if (err != -EPERM && err != -ENODEV)
994 BT_ERR("%s urb %p submission failed (%d)",
995 hdev->name, urb, -err);
996 usb_unanchor_urb(urb);
997 }
998
999 usb_free_urb(urb);
1000
1001 return err;
1002 }
1003
1004 static void btusb_tx_complete(struct urb *urb)
1005 {
1006 struct sk_buff *skb = urb->context;
1007 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1008 struct btusb_data *data = hci_get_drvdata(hdev);
1009
1010 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1011 urb->actual_length);
1012
1013 if (!test_bit(HCI_RUNNING, &hdev->flags))
1014 goto done;
1015
1016 if (!urb->status)
1017 hdev->stat.byte_tx += urb->transfer_buffer_length;
1018 else
1019 hdev->stat.err_tx++;
1020
1021 done:
1022 spin_lock(&data->txlock);
1023 data->tx_in_flight--;
1024 spin_unlock(&data->txlock);
1025
1026 kfree(urb->setup_packet);
1027
1028 kfree_skb(skb);
1029 }
1030
1031 static void btusb_isoc_tx_complete(struct urb *urb)
1032 {
1033 struct sk_buff *skb = urb->context;
1034 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1035
1036 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1037 urb->actual_length);
1038
1039 if (!test_bit(HCI_RUNNING, &hdev->flags))
1040 goto done;
1041
1042 if (!urb->status)
1043 hdev->stat.byte_tx += urb->transfer_buffer_length;
1044 else
1045 hdev->stat.err_tx++;
1046
1047 done:
1048 kfree(urb->setup_packet);
1049
1050 kfree_skb(skb);
1051 }
1052
1053 static int btusb_open(struct hci_dev *hdev)
1054 {
1055 struct btusb_data *data = hci_get_drvdata(hdev);
1056 int err;
1057
1058 BT_DBG("%s", hdev->name);
1059
1060 err = usb_autopm_get_interface(data->intf);
1061 if (err < 0)
1062 return err;
1063
1064 /* Patching USB firmware files prior to starting any URBs of HCI path
1065 * It is more safe to use USB bulk channel for downloading USB patch
1066 */
1067 if (data->setup_on_usb) {
1068 err = data->setup_on_usb(hdev);
1069 if (err < 0)
1070 return err;
1071 }
1072
1073 data->intf->needs_remote_wakeup = 1;
1074
1075 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1076 goto done;
1077
1078 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1079 if (err < 0)
1080 goto failed;
1081
1082 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1083 if (err < 0) {
1084 usb_kill_anchored_urbs(&data->intr_anchor);
1085 goto failed;
1086 }
1087
1088 set_bit(BTUSB_BULK_RUNNING, &data->flags);
1089 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1090
1091 if (data->diag) {
1092 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1093 set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1094 }
1095
1096 done:
1097 usb_autopm_put_interface(data->intf);
1098 return 0;
1099
1100 failed:
1101 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1102 usb_autopm_put_interface(data->intf);
1103 return err;
1104 }
1105
1106 static void btusb_stop_traffic(struct btusb_data *data)
1107 {
1108 usb_kill_anchored_urbs(&data->intr_anchor);
1109 usb_kill_anchored_urbs(&data->bulk_anchor);
1110 usb_kill_anchored_urbs(&data->isoc_anchor);
1111 usb_kill_anchored_urbs(&data->diag_anchor);
1112 }
1113
1114 static int btusb_close(struct hci_dev *hdev)
1115 {
1116 struct btusb_data *data = hci_get_drvdata(hdev);
1117 int err;
1118
1119 BT_DBG("%s", hdev->name);
1120
1121 cancel_work_sync(&data->work);
1122 cancel_work_sync(&data->waker);
1123
1124 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1125 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1126 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1127 clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1128
1129 btusb_stop_traffic(data);
1130 btusb_free_frags(data);
1131
1132 err = usb_autopm_get_interface(data->intf);
1133 if (err < 0)
1134 goto failed;
1135
1136 data->intf->needs_remote_wakeup = 0;
1137 usb_autopm_put_interface(data->intf);
1138
1139 failed:
1140 usb_scuttle_anchored_urbs(&data->deferred);
1141 return 0;
1142 }
1143
1144 static int btusb_flush(struct hci_dev *hdev)
1145 {
1146 struct btusb_data *data = hci_get_drvdata(hdev);
1147
1148 BT_DBG("%s", hdev->name);
1149
1150 usb_kill_anchored_urbs(&data->tx_anchor);
1151 btusb_free_frags(data);
1152
1153 return 0;
1154 }
1155
1156 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1157 {
1158 struct btusb_data *data = hci_get_drvdata(hdev);
1159 struct usb_ctrlrequest *dr;
1160 struct urb *urb;
1161 unsigned int pipe;
1162
1163 urb = usb_alloc_urb(0, GFP_KERNEL);
1164 if (!urb)
1165 return ERR_PTR(-ENOMEM);
1166
1167 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1168 if (!dr) {
1169 usb_free_urb(urb);
1170 return ERR_PTR(-ENOMEM);
1171 }
1172
1173 dr->bRequestType = data->cmdreq_type;
1174 dr->bRequest = data->cmdreq;
1175 dr->wIndex = 0;
1176 dr->wValue = 0;
1177 dr->wLength = __cpu_to_le16(skb->len);
1178
1179 pipe = usb_sndctrlpipe(data->udev, 0x00);
1180
1181 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1182 skb->data, skb->len, btusb_tx_complete, skb);
1183
1184 skb->dev = (void *)hdev;
1185
1186 return urb;
1187 }
1188
1189 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1190 {
1191 struct btusb_data *data = hci_get_drvdata(hdev);
1192 struct urb *urb;
1193 unsigned int pipe;
1194
1195 if (!data->bulk_tx_ep)
1196 return ERR_PTR(-ENODEV);
1197
1198 urb = usb_alloc_urb(0, GFP_KERNEL);
1199 if (!urb)
1200 return ERR_PTR(-ENOMEM);
1201
1202 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1203
1204 usb_fill_bulk_urb(urb, data->udev, pipe,
1205 skb->data, skb->len, btusb_tx_complete, skb);
1206
1207 skb->dev = (void *)hdev;
1208
1209 return urb;
1210 }
1211
1212 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1213 {
1214 struct btusb_data *data = hci_get_drvdata(hdev);
1215 struct urb *urb;
1216 unsigned int pipe;
1217
1218 if (!data->isoc_tx_ep)
1219 return ERR_PTR(-ENODEV);
1220
1221 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1222 if (!urb)
1223 return ERR_PTR(-ENOMEM);
1224
1225 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1226
1227 usb_fill_int_urb(urb, data->udev, pipe,
1228 skb->data, skb->len, btusb_isoc_tx_complete,
1229 skb, data->isoc_tx_ep->bInterval);
1230
1231 urb->transfer_flags = URB_ISO_ASAP;
1232
1233 __fill_isoc_descriptor(urb, skb->len,
1234 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1235
1236 skb->dev = (void *)hdev;
1237
1238 return urb;
1239 }
1240
1241 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1242 {
1243 struct btusb_data *data = hci_get_drvdata(hdev);
1244 int err;
1245
1246 usb_anchor_urb(urb, &data->tx_anchor);
1247
1248 err = usb_submit_urb(urb, GFP_KERNEL);
1249 if (err < 0) {
1250 if (err != -EPERM && err != -ENODEV)
1251 BT_ERR("%s urb %p submission failed (%d)",
1252 hdev->name, urb, -err);
1253 kfree(urb->setup_packet);
1254 usb_unanchor_urb(urb);
1255 } else {
1256 usb_mark_last_busy(data->udev);
1257 }
1258
1259 usb_free_urb(urb);
1260 return err;
1261 }
1262
1263 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1264 {
1265 struct btusb_data *data = hci_get_drvdata(hdev);
1266 unsigned long flags;
1267 bool suspending;
1268
1269 spin_lock_irqsave(&data->txlock, flags);
1270 suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1271 if (!suspending)
1272 data->tx_in_flight++;
1273 spin_unlock_irqrestore(&data->txlock, flags);
1274
1275 if (!suspending)
1276 return submit_tx_urb(hdev, urb);
1277
1278 usb_anchor_urb(urb, &data->deferred);
1279 schedule_work(&data->waker);
1280
1281 usb_free_urb(urb);
1282 return 0;
1283 }
1284
1285 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1286 {
1287 struct urb *urb;
1288
1289 BT_DBG("%s", hdev->name);
1290
1291 switch (hci_skb_pkt_type(skb)) {
1292 case HCI_COMMAND_PKT:
1293 urb = alloc_ctrl_urb(hdev, skb);
1294 if (IS_ERR(urb))
1295 return PTR_ERR(urb);
1296
1297 hdev->stat.cmd_tx++;
1298 return submit_or_queue_tx_urb(hdev, urb);
1299
1300 case HCI_ACLDATA_PKT:
1301 urb = alloc_bulk_urb(hdev, skb);
1302 if (IS_ERR(urb))
1303 return PTR_ERR(urb);
1304
1305 hdev->stat.acl_tx++;
1306 return submit_or_queue_tx_urb(hdev, urb);
1307
1308 case HCI_SCODATA_PKT:
1309 if (hci_conn_num(hdev, SCO_LINK) < 1)
1310 return -ENODEV;
1311
1312 urb = alloc_isoc_urb(hdev, skb);
1313 if (IS_ERR(urb))
1314 return PTR_ERR(urb);
1315
1316 hdev->stat.sco_tx++;
1317 return submit_tx_urb(hdev, urb);
1318 }
1319
1320 return -EILSEQ;
1321 }
1322
1323 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1324 {
1325 struct btusb_data *data = hci_get_drvdata(hdev);
1326
1327 BT_DBG("%s evt %d", hdev->name, evt);
1328
1329 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1330 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1331 schedule_work(&data->work);
1332 }
1333 }
1334
1335 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1336 {
1337 struct btusb_data *data = hci_get_drvdata(hdev);
1338 struct usb_interface *intf = data->isoc;
1339 struct usb_endpoint_descriptor *ep_desc;
1340 int i, err;
1341
1342 if (!data->isoc)
1343 return -ENODEV;
1344
1345 err = usb_set_interface(data->udev, 1, altsetting);
1346 if (err < 0) {
1347 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1348 return err;
1349 }
1350
1351 data->isoc_altsetting = altsetting;
1352
1353 data->isoc_tx_ep = NULL;
1354 data->isoc_rx_ep = NULL;
1355
1356 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1357 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1358
1359 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1360 data->isoc_tx_ep = ep_desc;
1361 continue;
1362 }
1363
1364 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1365 data->isoc_rx_ep = ep_desc;
1366 continue;
1367 }
1368 }
1369
1370 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1371 BT_ERR("%s invalid SCO descriptors", hdev->name);
1372 return -ENODEV;
1373 }
1374
1375 return 0;
1376 }
1377
1378 static void btusb_work(struct work_struct *work)
1379 {
1380 struct btusb_data *data = container_of(work, struct btusb_data, work);
1381 struct hci_dev *hdev = data->hdev;
1382 int new_alts;
1383 int err;
1384
1385 if (data->sco_num > 0) {
1386 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1387 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1388 if (err < 0) {
1389 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1390 usb_kill_anchored_urbs(&data->isoc_anchor);
1391 return;
1392 }
1393
1394 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1395 }
1396
1397 if (hdev->voice_setting & 0x0020) {
1398 static const int alts[3] = { 2, 4, 5 };
1399
1400 new_alts = alts[data->sco_num - 1];
1401 } else {
1402 new_alts = data->sco_num;
1403 }
1404
1405 if (data->isoc_altsetting != new_alts) {
1406 unsigned long flags;
1407
1408 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1409 usb_kill_anchored_urbs(&data->isoc_anchor);
1410
1411 /* When isochronous alternate setting needs to be
1412 * changed, because SCO connection has been added
1413 * or removed, a packet fragment may be left in the
1414 * reassembling state. This could lead to wrongly
1415 * assembled fragments.
1416 *
1417 * Clear outstanding fragment when selecting a new
1418 * alternate setting.
1419 */
1420 spin_lock_irqsave(&data->rxlock, flags);
1421 kfree_skb(data->sco_skb);
1422 data->sco_skb = NULL;
1423 spin_unlock_irqrestore(&data->rxlock, flags);
1424
1425 if (__set_isoc_interface(hdev, new_alts) < 0)
1426 return;
1427 }
1428
1429 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1430 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1431 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1432 else
1433 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1434 }
1435 } else {
1436 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1437 usb_kill_anchored_urbs(&data->isoc_anchor);
1438
1439 __set_isoc_interface(hdev, 0);
1440 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1441 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1442 }
1443 }
1444
1445 static void btusb_waker(struct work_struct *work)
1446 {
1447 struct btusb_data *data = container_of(work, struct btusb_data, waker);
1448 int err;
1449
1450 err = usb_autopm_get_interface(data->intf);
1451 if (err < 0)
1452 return;
1453
1454 usb_autopm_put_interface(data->intf);
1455 }
1456
1457 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1458 {
1459 struct sk_buff *skb;
1460 u8 val = 0x00;
1461
1462 BT_DBG("%s", hdev->name);
1463
1464 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1465 if (IS_ERR(skb))
1466 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1467 else
1468 kfree_skb(skb);
1469
1470 return 0;
1471 }
1472
1473 static int btusb_setup_csr(struct hci_dev *hdev)
1474 {
1475 struct hci_rp_read_local_version *rp;
1476 struct sk_buff *skb;
1477
1478 BT_DBG("%s", hdev->name);
1479
1480 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1481 HCI_INIT_TIMEOUT);
1482 if (IS_ERR(skb)) {
1483 int err = PTR_ERR(skb);
1484 BT_ERR("%s: CSR: Local version failed (%d)", hdev->name, err);
1485 return err;
1486 }
1487
1488 if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1489 BT_ERR("%s: CSR: Local version length mismatch", hdev->name);
1490 kfree_skb(skb);
1491 return -EIO;
1492 }
1493
1494 rp = (struct hci_rp_read_local_version *)skb->data;
1495
1496 /* Detect controllers which aren't real CSR ones. */
1497 if (le16_to_cpu(rp->manufacturer) != 10 ||
1498 le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1499 /* Clear the reset quirk since this is not an actual
1500 * early Bluetooth 1.1 device from CSR.
1501 */
1502 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1503
1504 /* These fake CSR controllers have all a broken
1505 * stored link key handling and so just disable it.
1506 */
1507 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1508 }
1509
1510 kfree_skb(skb);
1511
1512 return 0;
1513 }
1514
1515 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1516 struct intel_version *ver)
1517 {
1518 const struct firmware *fw;
1519 char fwname[64];
1520 int ret;
1521
1522 snprintf(fwname, sizeof(fwname),
1523 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1524 ver->hw_platform, ver->hw_variant, ver->hw_revision,
1525 ver->fw_variant, ver->fw_revision, ver->fw_build_num,
1526 ver->fw_build_ww, ver->fw_build_yy);
1527
1528 ret = request_firmware(&fw, fwname, &hdev->dev);
1529 if (ret < 0) {
1530 if (ret == -EINVAL) {
1531 BT_ERR("%s Intel firmware file request failed (%d)",
1532 hdev->name, ret);
1533 return NULL;
1534 }
1535
1536 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1537 hdev->name, fwname, ret);
1538
1539 /* If the correct firmware patch file is not found, use the
1540 * default firmware patch file instead
1541 */
1542 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1543 ver->hw_platform, ver->hw_variant);
1544 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1545 BT_ERR("%s failed to open default Intel fw file: %s",
1546 hdev->name, fwname);
1547 return NULL;
1548 }
1549 }
1550
1551 BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1552
1553 return fw;
1554 }
1555
1556 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1557 const struct firmware *fw,
1558 const u8 **fw_ptr, int *disable_patch)
1559 {
1560 struct sk_buff *skb;
1561 struct hci_command_hdr *cmd;
1562 const u8 *cmd_param;
1563 struct hci_event_hdr *evt = NULL;
1564 const u8 *evt_param = NULL;
1565 int remain = fw->size - (*fw_ptr - fw->data);
1566
1567 /* The first byte indicates the types of the patch command or event.
1568 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1569 * in the current firmware buffer doesn't start with 0x01 or
1570 * the size of remain buffer is smaller than HCI command header,
1571 * the firmware file is corrupted and it should stop the patching
1572 * process.
1573 */
1574 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1575 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1576 return -EINVAL;
1577 }
1578 (*fw_ptr)++;
1579 remain--;
1580
1581 cmd = (struct hci_command_hdr *)(*fw_ptr);
1582 *fw_ptr += sizeof(*cmd);
1583 remain -= sizeof(*cmd);
1584
1585 /* Ensure that the remain firmware data is long enough than the length
1586 * of command parameter. If not, the firmware file is corrupted.
1587 */
1588 if (remain < cmd->plen) {
1589 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1590 return -EFAULT;
1591 }
1592
1593 /* If there is a command that loads a patch in the firmware
1594 * file, then enable the patch upon success, otherwise just
1595 * disable the manufacturer mode, for example patch activation
1596 * is not required when the default firmware patch file is used
1597 * because there are no patch data to load.
1598 */
1599 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1600 *disable_patch = 0;
1601
1602 cmd_param = *fw_ptr;
1603 *fw_ptr += cmd->plen;
1604 remain -= cmd->plen;
1605
1606 /* This reads the expected events when the above command is sent to the
1607 * device. Some vendor commands expects more than one events, for
1608 * example command status event followed by vendor specific event.
1609 * For this case, it only keeps the last expected event. so the command
1610 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1611 * last expected event.
1612 */
1613 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1614 (*fw_ptr)++;
1615 remain--;
1616
1617 evt = (struct hci_event_hdr *)(*fw_ptr);
1618 *fw_ptr += sizeof(*evt);
1619 remain -= sizeof(*evt);
1620
1621 if (remain < evt->plen) {
1622 BT_ERR("%s Intel fw corrupted: invalid evt len",
1623 hdev->name);
1624 return -EFAULT;
1625 }
1626
1627 evt_param = *fw_ptr;
1628 *fw_ptr += evt->plen;
1629 remain -= evt->plen;
1630 }
1631
1632 /* Every HCI commands in the firmware file has its correspond event.
1633 * If event is not found or remain is smaller than zero, the firmware
1634 * file is corrupted.
1635 */
1636 if (!evt || !evt_param || remain < 0) {
1637 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1638 return -EFAULT;
1639 }
1640
1641 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1642 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1643 if (IS_ERR(skb)) {
1644 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1645 hdev->name, cmd->opcode, PTR_ERR(skb));
1646 return PTR_ERR(skb);
1647 }
1648
1649 /* It ensures that the returned event matches the event data read from
1650 * the firmware file. At fist, it checks the length and then
1651 * the contents of the event.
1652 */
1653 if (skb->len != evt->plen) {
1654 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1655 le16_to_cpu(cmd->opcode));
1656 kfree_skb(skb);
1657 return -EFAULT;
1658 }
1659
1660 if (memcmp(skb->data, evt_param, evt->plen)) {
1661 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1662 hdev->name, le16_to_cpu(cmd->opcode));
1663 kfree_skb(skb);
1664 return -EFAULT;
1665 }
1666 kfree_skb(skb);
1667
1668 return 0;
1669 }
1670
1671 static int btusb_setup_intel(struct hci_dev *hdev)
1672 {
1673 struct sk_buff *skb;
1674 const struct firmware *fw;
1675 const u8 *fw_ptr;
1676 int disable_patch, err;
1677 struct intel_version ver;
1678
1679 BT_DBG("%s", hdev->name);
1680
1681 /* The controller has a bug with the first HCI command sent to it
1682 * returning number of completed commands as zero. This would stall the
1683 * command processing in the Bluetooth core.
1684 *
1685 * As a workaround, send HCI Reset command first which will reset the
1686 * number of completed commands and allow normal command processing
1687 * from now on.
1688 */
1689 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1690 if (IS_ERR(skb)) {
1691 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1692 hdev->name, PTR_ERR(skb));
1693 return PTR_ERR(skb);
1694 }
1695 kfree_skb(skb);
1696
1697 /* Read Intel specific controller version first to allow selection of
1698 * which firmware file to load.
1699 *
1700 * The returned information are hardware variant and revision plus
1701 * firmware variant, revision and build number.
1702 */
1703 err = btintel_read_version(hdev, &ver);
1704 if (err)
1705 return err;
1706
1707 BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1708 hdev->name, ver.hw_platform, ver.hw_variant, ver.hw_revision,
1709 ver.fw_variant, ver.fw_revision, ver.fw_build_num,
1710 ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
1711
1712 /* fw_patch_num indicates the version of patch the device currently
1713 * have. If there is no patch data in the device, it is always 0x00.
1714 * So, if it is other than 0x00, no need to patch the device again.
1715 */
1716 if (ver.fw_patch_num) {
1717 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1718 hdev->name, ver.fw_patch_num);
1719 goto complete;
1720 }
1721
1722 /* Opens the firmware patch file based on the firmware version read
1723 * from the controller. If it fails to open the matching firmware
1724 * patch file, it tries to open the default firmware patch file.
1725 * If no patch file is found, allow the device to operate without
1726 * a patch.
1727 */
1728 fw = btusb_setup_intel_get_fw(hdev, &ver);
1729 if (!fw)
1730 goto complete;
1731 fw_ptr = fw->data;
1732
1733 /* Enable the manufacturer mode of the controller.
1734 * Only while this mode is enabled, the driver can download the
1735 * firmware patch data and configuration parameters.
1736 */
1737 err = btintel_enter_mfg(hdev);
1738 if (err) {
1739 release_firmware(fw);
1740 return err;
1741 }
1742
1743 disable_patch = 1;
1744
1745 /* The firmware data file consists of list of Intel specific HCI
1746 * commands and its expected events. The first byte indicates the
1747 * type of the message, either HCI command or HCI event.
1748 *
1749 * It reads the command and its expected event from the firmware file,
1750 * and send to the controller. Once __hci_cmd_sync_ev() returns,
1751 * the returned event is compared with the event read from the firmware
1752 * file and it will continue until all the messages are downloaded to
1753 * the controller.
1754 *
1755 * Once the firmware patching is completed successfully,
1756 * the manufacturer mode is disabled with reset and activating the
1757 * downloaded patch.
1758 *
1759 * If the firmware patching fails, the manufacturer mode is
1760 * disabled with reset and deactivating the patch.
1761 *
1762 * If the default patch file is used, no reset is done when disabling
1763 * the manufacturer.
1764 */
1765 while (fw->size > fw_ptr - fw->data) {
1766 int ret;
1767
1768 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1769 &disable_patch);
1770 if (ret < 0)
1771 goto exit_mfg_deactivate;
1772 }
1773
1774 release_firmware(fw);
1775
1776 if (disable_patch)
1777 goto exit_mfg_disable;
1778
1779 /* Patching completed successfully and disable the manufacturer mode
1780 * with reset and activate the downloaded firmware patches.
1781 */
1782 err = btintel_exit_mfg(hdev, true, true);
1783 if (err)
1784 return err;
1785
1786 BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1787 hdev->name);
1788
1789 goto complete;
1790
1791 exit_mfg_disable:
1792 /* Disable the manufacturer mode without reset */
1793 err = btintel_exit_mfg(hdev, false, false);
1794 if (err)
1795 return err;
1796
1797 BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1798
1799 goto complete;
1800
1801 exit_mfg_deactivate:
1802 release_firmware(fw);
1803
1804 /* Patching failed. Disable the manufacturer mode with reset and
1805 * deactivate the downloaded firmware patches.
1806 */
1807 err = btintel_exit_mfg(hdev, true, false);
1808 if (err)
1809 return err;
1810
1811 BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1812 hdev->name);
1813
1814 complete:
1815 /* Set the event mask for Intel specific vendor events. This enables
1816 * a few extra events that are useful during general operation.
1817 */
1818 btintel_set_event_mask_mfg(hdev, false);
1819
1820 btintel_check_bdaddr(hdev);
1821 return 0;
1822 }
1823
1824 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1825 {
1826 struct sk_buff *skb;
1827 struct hci_event_hdr *hdr;
1828 struct hci_ev_cmd_complete *evt;
1829
1830 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1831 if (!skb)
1832 return -ENOMEM;
1833
1834 hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
1835 hdr->evt = HCI_EV_CMD_COMPLETE;
1836 hdr->plen = sizeof(*evt) + 1;
1837
1838 evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
1839 evt->ncmd = 0x01;
1840 evt->opcode = cpu_to_le16(opcode);
1841
1842 *skb_put(skb, 1) = 0x00;
1843
1844 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
1845
1846 return hci_recv_frame(hdev, skb);
1847 }
1848
1849 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1850 int count)
1851 {
1852 /* When the device is in bootloader mode, then it can send
1853 * events via the bulk endpoint. These events are treated the
1854 * same way as the ones received from the interrupt endpoint.
1855 */
1856 if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1857 return btusb_recv_intr(data, buffer, count);
1858
1859 return btusb_recv_bulk(data, buffer, count);
1860 }
1861
1862 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1863 unsigned int len)
1864 {
1865 const struct intel_bootup *evt = ptr;
1866
1867 if (len != sizeof(*evt))
1868 return;
1869
1870 if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1871 smp_mb__after_atomic();
1872 wake_up_bit(&data->flags, BTUSB_BOOTING);
1873 }
1874 }
1875
1876 static void btusb_intel_secure_send_result(struct btusb_data *data,
1877 const void *ptr, unsigned int len)
1878 {
1879 const struct intel_secure_send_result *evt = ptr;
1880
1881 if (len != sizeof(*evt))
1882 return;
1883
1884 if (evt->result)
1885 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1886
1887 if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1888 test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1889 smp_mb__after_atomic();
1890 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1891 }
1892 }
1893
1894 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1895 {
1896 struct btusb_data *data = hci_get_drvdata(hdev);
1897
1898 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1899 struct hci_event_hdr *hdr = (void *)skb->data;
1900
1901 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1902 hdr->plen > 0) {
1903 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1904 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1905
1906 switch (skb->data[2]) {
1907 case 0x02:
1908 /* When switching to the operational firmware
1909 * the device sends a vendor specific event
1910 * indicating that the bootup completed.
1911 */
1912 btusb_intel_bootup(data, ptr, len);
1913 break;
1914 case 0x06:
1915 /* When the firmware loading completes the
1916 * device sends out a vendor specific event
1917 * indicating the result of the firmware
1918 * loading.
1919 */
1920 btusb_intel_secure_send_result(data, ptr, len);
1921 break;
1922 }
1923 }
1924 }
1925
1926 return hci_recv_frame(hdev, skb);
1927 }
1928
1929 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1930 {
1931 struct btusb_data *data = hci_get_drvdata(hdev);
1932 struct urb *urb;
1933
1934 BT_DBG("%s", hdev->name);
1935
1936 switch (hci_skb_pkt_type(skb)) {
1937 case HCI_COMMAND_PKT:
1938 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1939 struct hci_command_hdr *cmd = (void *)skb->data;
1940 __u16 opcode = le16_to_cpu(cmd->opcode);
1941
1942 /* When in bootloader mode and the command 0xfc09
1943 * is received, it needs to be send down the
1944 * bulk endpoint. So allocate a bulk URB instead.
1945 */
1946 if (opcode == 0xfc09)
1947 urb = alloc_bulk_urb(hdev, skb);
1948 else
1949 urb = alloc_ctrl_urb(hdev, skb);
1950
1951 /* When the 0xfc01 command is issued to boot into
1952 * the operational firmware, it will actually not
1953 * send a command complete event. To keep the flow
1954 * control working inject that event here.
1955 */
1956 if (opcode == 0xfc01)
1957 inject_cmd_complete(hdev, opcode);
1958 } else {
1959 urb = alloc_ctrl_urb(hdev, skb);
1960 }
1961 if (IS_ERR(urb))
1962 return PTR_ERR(urb);
1963
1964 hdev->stat.cmd_tx++;
1965 return submit_or_queue_tx_urb(hdev, urb);
1966
1967 case HCI_ACLDATA_PKT:
1968 urb = alloc_bulk_urb(hdev, skb);
1969 if (IS_ERR(urb))
1970 return PTR_ERR(urb);
1971
1972 hdev->stat.acl_tx++;
1973 return submit_or_queue_tx_urb(hdev, urb);
1974
1975 case HCI_SCODATA_PKT:
1976 if (hci_conn_num(hdev, SCO_LINK) < 1)
1977 return -ENODEV;
1978
1979 urb = alloc_isoc_urb(hdev, skb);
1980 if (IS_ERR(urb))
1981 return PTR_ERR(urb);
1982
1983 hdev->stat.sco_tx++;
1984 return submit_tx_urb(hdev, urb);
1985 }
1986
1987 return -EILSEQ;
1988 }
1989
1990 static int btusb_setup_intel_new(struct hci_dev *hdev)
1991 {
1992 static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
1993 0x00, 0x08, 0x04, 0x00 };
1994 struct btusb_data *data = hci_get_drvdata(hdev);
1995 struct sk_buff *skb;
1996 struct intel_version ver;
1997 struct intel_boot_params *params;
1998 const struct firmware *fw;
1999 const u8 *fw_ptr;
2000 u32 frag_len;
2001 char fwname[64];
2002 ktime_t calltime, delta, rettime;
2003 unsigned long long duration;
2004 int err;
2005
2006 BT_DBG("%s", hdev->name);
2007
2008 calltime = ktime_get();
2009
2010 /* Read the Intel version information to determine if the device
2011 * is in bootloader mode or if it already has operational firmware
2012 * loaded.
2013 */
2014 err = btintel_read_version(hdev, &ver);
2015 if (err)
2016 return err;
2017
2018 /* The hardware platform number has a fixed value of 0x37 and
2019 * for now only accept this single value.
2020 */
2021 if (ver.hw_platform != 0x37) {
2022 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
2023 hdev->name, ver.hw_platform);
2024 return -EINVAL;
2025 }
2026
2027 /* At the moment the iBT 3.0 hardware variants 0x0b (LnP/SfP)
2028 * and 0x0c (WsP) are supported by this firmware loading method.
2029 *
2030 * This check has been put in place to ensure correct forward
2031 * compatibility options when newer hardware variants come along.
2032 */
2033 if (ver.hw_variant != 0x0b && ver.hw_variant != 0x0c) {
2034 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
2035 hdev->name, ver.hw_variant);
2036 return -EINVAL;
2037 }
2038
2039 btintel_version_info(hdev, &ver);
2040
2041 /* The firmware variant determines if the device is in bootloader
2042 * mode or is running operational firmware. The value 0x06 identifies
2043 * the bootloader and the value 0x23 identifies the operational
2044 * firmware.
2045 *
2046 * When the operational firmware is already present, then only
2047 * the check for valid Bluetooth device address is needed. This
2048 * determines if the device will be added as configured or
2049 * unconfigured controller.
2050 *
2051 * It is not possible to use the Secure Boot Parameters in this
2052 * case since that command is only available in bootloader mode.
2053 */
2054 if (ver.fw_variant == 0x23) {
2055 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2056 btintel_check_bdaddr(hdev);
2057 return 0;
2058 }
2059
2060 /* If the device is not in bootloader mode, then the only possible
2061 * choice is to return an error and abort the device initialization.
2062 */
2063 if (ver.fw_variant != 0x06) {
2064 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2065 hdev->name, ver.fw_variant);
2066 return -ENODEV;
2067 }
2068
2069 /* Read the secure boot parameters to identify the operating
2070 * details of the bootloader.
2071 */
2072 skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2073 if (IS_ERR(skb)) {
2074 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2075 hdev->name, PTR_ERR(skb));
2076 return PTR_ERR(skb);
2077 }
2078
2079 if (skb->len != sizeof(*params)) {
2080 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2081 kfree_skb(skb);
2082 return -EILSEQ;
2083 }
2084
2085 params = (struct intel_boot_params *)skb->data;
2086
2087 BT_INFO("%s: Device revision is %u", hdev->name,
2088 le16_to_cpu(params->dev_revid));
2089
2090 BT_INFO("%s: Secure boot is %s", hdev->name,
2091 params->secure_boot ? "enabled" : "disabled");
2092
2093 BT_INFO("%s: OTP lock is %s", hdev->name,
2094 params->otp_lock ? "enabled" : "disabled");
2095
2096 BT_INFO("%s: API lock is %s", hdev->name,
2097 params->api_lock ? "enabled" : "disabled");
2098
2099 BT_INFO("%s: Debug lock is %s", hdev->name,
2100 params->debug_lock ? "enabled" : "disabled");
2101
2102 BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2103 params->min_fw_build_nn, params->min_fw_build_cw,
2104 2000 + params->min_fw_build_yy);
2105
2106 /* It is required that every single firmware fragment is acknowledged
2107 * with a command complete event. If the boot parameters indicate
2108 * that this bootloader does not send them, then abort the setup.
2109 */
2110 if (params->limited_cce != 0x00) {
2111 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2112 hdev->name, params->limited_cce);
2113 kfree_skb(skb);
2114 return -EINVAL;
2115 }
2116
2117 /* If the OTP has no valid Bluetooth device address, then there will
2118 * also be no valid address for the operational firmware.
2119 */
2120 if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2121 BT_INFO("%s: No device address configured", hdev->name);
2122 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2123 }
2124
2125 /* With this Intel bootloader only the hardware variant and device
2126 * revision information are used to select the right firmware.
2127 *
2128 * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2129 *
2130 * Currently the supported hardware variants are:
2131 * 11 (0x0b) for iBT3.0 (LnP/SfP)
2132 * 12 (0x0c) for iBT3.5 (WsP)
2133 */
2134 snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.sfi",
2135 le16_to_cpu(ver.hw_variant),
2136 le16_to_cpu(params->dev_revid));
2137
2138 err = request_firmware(&fw, fwname, &hdev->dev);
2139 if (err < 0) {
2140 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2141 hdev->name, err);
2142 kfree_skb(skb);
2143 return err;
2144 }
2145
2146 BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2147
2148 /* Save the DDC file name for later use to apply once the firmware
2149 * downloading is done.
2150 */
2151 snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.ddc",
2152 le16_to_cpu(ver.hw_variant),
2153 le16_to_cpu(params->dev_revid));
2154
2155 kfree_skb(skb);
2156
2157 if (fw->size < 644) {
2158 BT_ERR("%s: Invalid size of firmware file (%zu)",
2159 hdev->name, fw->size);
2160 err = -EBADF;
2161 goto done;
2162 }
2163
2164 set_bit(BTUSB_DOWNLOADING, &data->flags);
2165
2166 /* Start the firmware download transaction with the Init fragment
2167 * represented by the 128 bytes of CSS header.
2168 */
2169 err = btintel_secure_send(hdev, 0x00, 128, fw->data);
2170 if (err < 0) {
2171 BT_ERR("%s: Failed to send firmware header (%d)",
2172 hdev->name, err);
2173 goto done;
2174 }
2175
2176 /* Send the 256 bytes of public key information from the firmware
2177 * as the PKey fragment.
2178 */
2179 err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128);
2180 if (err < 0) {
2181 BT_ERR("%s: Failed to send firmware public key (%d)",
2182 hdev->name, err);
2183 goto done;
2184 }
2185
2186 /* Send the 256 bytes of signature information from the firmware
2187 * as the Sign fragment.
2188 */
2189 err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388);
2190 if (err < 0) {
2191 BT_ERR("%s: Failed to send firmware signature (%d)",
2192 hdev->name, err);
2193 goto done;
2194 }
2195
2196 fw_ptr = fw->data + 644;
2197 frag_len = 0;
2198
2199 while (fw_ptr - fw->data < fw->size) {
2200 struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
2201
2202 frag_len += sizeof(*cmd) + cmd->plen;
2203
2204 /* The parameter length of the secure send command requires
2205 * a 4 byte alignment. It happens so that the firmware file
2206 * contains proper Intel_NOP commands to align the fragments
2207 * as needed.
2208 *
2209 * Send set of commands with 4 byte alignment from the
2210 * firmware data buffer as a single Data fragement.
2211 */
2212 if (!(frag_len % 4)) {
2213 err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr);
2214 if (err < 0) {
2215 BT_ERR("%s: Failed to send firmware data (%d)",
2216 hdev->name, err);
2217 goto done;
2218 }
2219
2220 fw_ptr += frag_len;
2221 frag_len = 0;
2222 }
2223 }
2224
2225 set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2226
2227 BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2228
2229 /* Before switching the device into operational mode and with that
2230 * booting the loaded firmware, wait for the bootloader notification
2231 * that all fragments have been successfully received.
2232 *
2233 * When the event processing receives the notification, then the
2234 * BTUSB_DOWNLOADING flag will be cleared.
2235 *
2236 * The firmware loading should not take longer than 5 seconds
2237 * and thus just timeout if that happens and fail the setup
2238 * of this device.
2239 */
2240 err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2241 TASK_INTERRUPTIBLE,
2242 msecs_to_jiffies(5000));
2243 if (err == -EINTR) {
2244 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2245 goto done;
2246 }
2247
2248 if (err) {
2249 BT_ERR("%s: Firmware loading timeout", hdev->name);
2250 err = -ETIMEDOUT;
2251 goto done;
2252 }
2253
2254 if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2255 BT_ERR("%s: Firmware loading failed", hdev->name);
2256 err = -ENOEXEC;
2257 goto done;
2258 }
2259
2260 rettime = ktime_get();
2261 delta = ktime_sub(rettime, calltime);
2262 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2263
2264 BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2265
2266 done:
2267 release_firmware(fw);
2268
2269 if (err < 0)
2270 return err;
2271
2272 calltime = ktime_get();
2273
2274 set_bit(BTUSB_BOOTING, &data->flags);
2275
2276 skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2277 HCI_INIT_TIMEOUT);
2278 if (IS_ERR(skb))
2279 return PTR_ERR(skb);
2280
2281 kfree_skb(skb);
2282
2283 /* The bootloader will not indicate when the device is ready. This
2284 * is done by the operational firmware sending bootup notification.
2285 *
2286 * Booting into operational firmware should not take longer than
2287 * 1 second. However if that happens, then just fail the setup
2288 * since something went wrong.
2289 */
2290 BT_INFO("%s: Waiting for device to boot", hdev->name);
2291
2292 err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2293 TASK_INTERRUPTIBLE,
2294 msecs_to_jiffies(1000));
2295
2296 if (err == -EINTR) {
2297 BT_ERR("%s: Device boot interrupted", hdev->name);
2298 return -EINTR;
2299 }
2300
2301 if (err) {
2302 BT_ERR("%s: Device boot timeout", hdev->name);
2303 return -ETIMEDOUT;
2304 }
2305
2306 rettime = ktime_get();
2307 delta = ktime_sub(rettime, calltime);
2308 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2309
2310 BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2311
2312 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2313
2314 /* Once the device is running in operational mode, it needs to apply
2315 * the device configuration (DDC) parameters.
2316 *
2317 * The device can work without DDC parameters, so even if it fails
2318 * to load the file, no need to fail the setup.
2319 */
2320 btintel_load_ddc_config(hdev, fwname);
2321
2322 /* Set the event mask for Intel specific vendor events. This enables
2323 * a few extra events that are useful during general operation. It
2324 * does not enable any debugging related events.
2325 *
2326 * The device will function correctly without these events enabled
2327 * and thus no need to fail the setup.
2328 */
2329 btintel_set_event_mask(hdev, false);
2330
2331 return 0;
2332 }
2333
2334 static int btusb_shutdown_intel(struct hci_dev *hdev)
2335 {
2336 struct sk_buff *skb;
2337 long ret;
2338
2339 /* Some platforms have an issue with BT LED when the interface is
2340 * down or BT radio is turned off, which takes 5 seconds to BT LED
2341 * goes off. This command turns off the BT LED immediately.
2342 */
2343 skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2344 if (IS_ERR(skb)) {
2345 ret = PTR_ERR(skb);
2346 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2347 hdev->name, ret);
2348 return ret;
2349 }
2350 kfree_skb(skb);
2351
2352 return 0;
2353 }
2354
2355 #ifdef CONFIG_PM
2356 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
2357 static int marvell_config_oob_wake(struct hci_dev *hdev)
2358 {
2359 struct sk_buff *skb;
2360 struct btusb_data *data = hci_get_drvdata(hdev);
2361 struct device *dev = &data->udev->dev;
2362 u16 pin, gap, opcode;
2363 int ret;
2364 u8 cmd[5];
2365
2366 /* Move on if no wakeup pin specified */
2367 if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
2368 of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
2369 return 0;
2370
2371 /* Vendor specific command to configure a GPIO as wake-up pin */
2372 opcode = hci_opcode_pack(0x3F, 0x59);
2373 cmd[0] = opcode & 0xFF;
2374 cmd[1] = opcode >> 8;
2375 cmd[2] = 2; /* length of parameters that follow */
2376 cmd[3] = pin;
2377 cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
2378
2379 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
2380 if (!skb) {
2381 bt_dev_err(hdev, "%s: No memory\n", __func__);
2382 return -ENOMEM;
2383 }
2384
2385 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
2386 hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
2387
2388 ret = btusb_send_frame(hdev, skb);
2389 if (ret) {
2390 bt_dev_err(hdev, "%s: configuration failed\n", __func__);
2391 kfree_skb(skb);
2392 return ret;
2393 }
2394
2395 return 0;
2396 }
2397 #endif
2398
2399 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2400 const bdaddr_t *bdaddr)
2401 {
2402 struct sk_buff *skb;
2403 u8 buf[8];
2404 long ret;
2405
2406 buf[0] = 0xfe;
2407 buf[1] = sizeof(bdaddr_t);
2408 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2409
2410 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2411 if (IS_ERR(skb)) {
2412 ret = PTR_ERR(skb);
2413 BT_ERR("%s: changing Marvell device address failed (%ld)",
2414 hdev->name, ret);
2415 return ret;
2416 }
2417 kfree_skb(skb);
2418
2419 return 0;
2420 }
2421
2422 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2423 const bdaddr_t *bdaddr)
2424 {
2425 struct sk_buff *skb;
2426 u8 buf[10];
2427 long ret;
2428
2429 buf[0] = 0x01;
2430 buf[1] = 0x01;
2431 buf[2] = 0x00;
2432 buf[3] = sizeof(bdaddr_t);
2433 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2434
2435 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2436 if (IS_ERR(skb)) {
2437 ret = PTR_ERR(skb);
2438 BT_ERR("%s: Change address command failed (%ld)",
2439 hdev->name, ret);
2440 return ret;
2441 }
2442 kfree_skb(skb);
2443
2444 return 0;
2445 }
2446
2447 #define QCA_DFU_PACKET_LEN 4096
2448
2449 #define QCA_GET_TARGET_VERSION 0x09
2450 #define QCA_CHECK_STATUS 0x05
2451 #define QCA_DFU_DOWNLOAD 0x01
2452
2453 #define QCA_SYSCFG_UPDATED 0x40
2454 #define QCA_PATCH_UPDATED 0x80
2455 #define QCA_DFU_TIMEOUT 3000
2456
2457 struct qca_version {
2458 __le32 rom_version;
2459 __le32 patch_version;
2460 __le32 ram_version;
2461 __le32 ref_clock;
2462 __u8 reserved[4];
2463 } __packed;
2464
2465 struct qca_rampatch_version {
2466 __le16 rom_version;
2467 __le16 patch_version;
2468 } __packed;
2469
2470 struct qca_device_info {
2471 u32 rom_version;
2472 u8 rampatch_hdr; /* length of header in rampatch */
2473 u8 nvm_hdr; /* length of header in NVM */
2474 u8 ver_offset; /* offset of version structure in rampatch */
2475 };
2476
2477 static const struct qca_device_info qca_devices_table[] = {
2478 { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2479 { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2480 { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2481 { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2482 { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2483 { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2484 };
2485
2486 static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request,
2487 void *data, u16 size)
2488 {
2489 struct btusb_data *btdata = hci_get_drvdata(hdev);
2490 struct usb_device *udev = btdata->udev;
2491 int pipe, err;
2492 u8 *buf;
2493
2494 buf = kmalloc(size, GFP_KERNEL);
2495 if (!buf)
2496 return -ENOMEM;
2497
2498 /* Found some of USB hosts have IOT issues with ours so that we should
2499 * not wait until HCI layer is ready.
2500 */
2501 pipe = usb_rcvctrlpipe(udev, 0);
2502 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2503 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2504 if (err < 0) {
2505 BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err);
2506 goto done;
2507 }
2508
2509 memcpy(data, buf, size);
2510
2511 done:
2512 kfree(buf);
2513
2514 return err;
2515 }
2516
2517 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2518 const struct firmware *firmware,
2519 size_t hdr_size)
2520 {
2521 struct btusb_data *btdata = hci_get_drvdata(hdev);
2522 struct usb_device *udev = btdata->udev;
2523 size_t count, size, sent = 0;
2524 int pipe, len, err;
2525 u8 *buf;
2526
2527 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2528 if (!buf)
2529 return -ENOMEM;
2530
2531 count = firmware->size;
2532
2533 size = min_t(size_t, count, hdr_size);
2534 memcpy(buf, firmware->data, size);
2535
2536 /* USB patches should go down to controller through USB path
2537 * because binary format fits to go down through USB channel.
2538 * USB control path is for patching headers and USB bulk is for
2539 * patch body.
2540 */
2541 pipe = usb_sndctrlpipe(udev, 0);
2542 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2543 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2544 if (err < 0) {
2545 BT_ERR("%s: Failed to send headers (%d)", hdev->name, err);
2546 goto done;
2547 }
2548
2549 sent += size;
2550 count -= size;
2551
2552 while (count) {
2553 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2554
2555 memcpy(buf, firmware->data + sent, size);
2556
2557 pipe = usb_sndbulkpipe(udev, 0x02);
2558 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2559 QCA_DFU_TIMEOUT);
2560 if (err < 0) {
2561 BT_ERR("%s: Failed to send body at %zd of %zd (%d)",
2562 hdev->name, sent, firmware->size, err);
2563 break;
2564 }
2565
2566 if (size != len) {
2567 BT_ERR("%s: Failed to get bulk buffer", hdev->name);
2568 err = -EILSEQ;
2569 break;
2570 }
2571
2572 sent += size;
2573 count -= size;
2574 }
2575
2576 done:
2577 kfree(buf);
2578 return err;
2579 }
2580
2581 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2582 struct qca_version *ver,
2583 const struct qca_device_info *info)
2584 {
2585 struct qca_rampatch_version *rver;
2586 const struct firmware *fw;
2587 u32 ver_rom, ver_patch;
2588 u16 rver_rom, rver_patch;
2589 char fwname[64];
2590 int err;
2591
2592 ver_rom = le32_to_cpu(ver->rom_version);
2593 ver_patch = le32_to_cpu(ver->patch_version);
2594
2595 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2596
2597 err = request_firmware(&fw, fwname, &hdev->dev);
2598 if (err) {
2599 BT_ERR("%s: failed to request rampatch file: %s (%d)",
2600 hdev->name, fwname, err);
2601 return err;
2602 }
2603
2604 BT_INFO("%s: using rampatch file: %s", hdev->name, fwname);
2605
2606 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2607 rver_rom = le16_to_cpu(rver->rom_version);
2608 rver_patch = le16_to_cpu(rver->patch_version);
2609
2610 BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x "
2611 "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom,
2612 ver_patch);
2613
2614 if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2615 BT_ERR("%s: rampatch file version did not match with firmware",
2616 hdev->name);
2617 err = -EINVAL;
2618 goto done;
2619 }
2620
2621 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2622
2623 done:
2624 release_firmware(fw);
2625
2626 return err;
2627 }
2628
2629 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2630 struct qca_version *ver,
2631 const struct qca_device_info *info)
2632 {
2633 const struct firmware *fw;
2634 char fwname[64];
2635 int err;
2636
2637 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2638 le32_to_cpu(ver->rom_version));
2639
2640 err = request_firmware(&fw, fwname, &hdev->dev);
2641 if (err) {
2642 BT_ERR("%s: failed to request NVM file: %s (%d)",
2643 hdev->name, fwname, err);
2644 return err;
2645 }
2646
2647 BT_INFO("%s: using NVM file: %s", hdev->name, fwname);
2648
2649 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2650
2651 release_firmware(fw);
2652
2653 return err;
2654 }
2655
2656 static int btusb_setup_qca(struct hci_dev *hdev)
2657 {
2658 const struct qca_device_info *info = NULL;
2659 struct qca_version ver;
2660 u32 ver_rom;
2661 u8 status;
2662 int i, err;
2663
2664 err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver,
2665 sizeof(ver));
2666 if (err < 0)
2667 return err;
2668
2669 ver_rom = le32_to_cpu(ver.rom_version);
2670 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2671 if (ver_rom == qca_devices_table[i].rom_version)
2672 info = &qca_devices_table[i];
2673 }
2674 if (!info) {
2675 BT_ERR("%s: don't support firmware rome 0x%x", hdev->name,
2676 ver_rom);
2677 return -ENODEV;
2678 }
2679
2680 err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status,
2681 sizeof(status));
2682 if (err < 0)
2683 return err;
2684
2685 if (!(status & QCA_PATCH_UPDATED)) {
2686 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2687 if (err < 0)
2688 return err;
2689 }
2690
2691 if (!(status & QCA_SYSCFG_UPDATED)) {
2692 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2693 if (err < 0)
2694 return err;
2695 }
2696
2697 return 0;
2698 }
2699
2700 #ifdef CONFIG_BT_HCIBTUSB_BCM
2701 static inline int __set_diag_interface(struct hci_dev *hdev)
2702 {
2703 struct btusb_data *data = hci_get_drvdata(hdev);
2704 struct usb_interface *intf = data->diag;
2705 int i;
2706
2707 if (!data->diag)
2708 return -ENODEV;
2709
2710 data->diag_tx_ep = NULL;
2711 data->diag_rx_ep = NULL;
2712
2713 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2714 struct usb_endpoint_descriptor *ep_desc;
2715
2716 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2717
2718 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2719 data->diag_tx_ep = ep_desc;
2720 continue;
2721 }
2722
2723 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2724 data->diag_rx_ep = ep_desc;
2725 continue;
2726 }
2727 }
2728
2729 if (!data->diag_tx_ep || !data->diag_rx_ep) {
2730 BT_ERR("%s invalid diagnostic descriptors", hdev->name);
2731 return -ENODEV;
2732 }
2733
2734 return 0;
2735 }
2736
2737 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
2738 {
2739 struct btusb_data *data = hci_get_drvdata(hdev);
2740 struct sk_buff *skb;
2741 struct urb *urb;
2742 unsigned int pipe;
2743
2744 if (!data->diag_tx_ep)
2745 return ERR_PTR(-ENODEV);
2746
2747 urb = usb_alloc_urb(0, GFP_KERNEL);
2748 if (!urb)
2749 return ERR_PTR(-ENOMEM);
2750
2751 skb = bt_skb_alloc(2, GFP_KERNEL);
2752 if (!skb) {
2753 usb_free_urb(urb);
2754 return ERR_PTR(-ENOMEM);
2755 }
2756
2757 *skb_put(skb, 1) = 0xf0;
2758 *skb_put(skb, 1) = enable;
2759
2760 pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
2761
2762 usb_fill_bulk_urb(urb, data->udev, pipe,
2763 skb->data, skb->len, btusb_tx_complete, skb);
2764
2765 skb->dev = (void *)hdev;
2766
2767 return urb;
2768 }
2769
2770 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
2771 {
2772 struct btusb_data *data = hci_get_drvdata(hdev);
2773 struct urb *urb;
2774
2775 if (!data->diag)
2776 return -ENODEV;
2777
2778 if (!test_bit(HCI_RUNNING, &hdev->flags))
2779 return -ENETDOWN;
2780
2781 urb = alloc_diag_urb(hdev, enable);
2782 if (IS_ERR(urb))
2783 return PTR_ERR(urb);
2784
2785 return submit_or_queue_tx_urb(hdev, urb);
2786 }
2787 #endif
2788
2789 #ifdef CONFIG_PM
2790 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
2791 {
2792 struct btusb_data *data = priv;
2793
2794 pm_wakeup_event(&data->udev->dev, 0);
2795
2796 /* Disable only if not already disabled (keep it balanced) */
2797 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
2798 disable_irq_nosync(irq);
2799 disable_irq_wake(irq);
2800 }
2801 return IRQ_HANDLED;
2802 }
2803
2804 static const struct of_device_id btusb_match_table[] = {
2805 { .compatible = "usb1286,204e" },
2806 { }
2807 };
2808 MODULE_DEVICE_TABLE(of, btusb_match_table);
2809
2810 /* Use an oob wakeup pin? */
2811 static int btusb_config_oob_wake(struct hci_dev *hdev)
2812 {
2813 struct btusb_data *data = hci_get_drvdata(hdev);
2814 struct device *dev = &data->udev->dev;
2815 int irq, ret;
2816
2817 clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
2818
2819 if (!of_match_device(btusb_match_table, dev))
2820 return 0;
2821
2822 /* Move on if no IRQ specified */
2823 irq = of_irq_get_byname(dev->of_node, "wakeup");
2824 if (irq <= 0) {
2825 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
2826 return 0;
2827 }
2828
2829 ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
2830 0, "OOB Wake-on-BT", data);
2831 if (ret) {
2832 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
2833 return ret;
2834 }
2835
2836 ret = device_init_wakeup(dev, true);
2837 if (ret) {
2838 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
2839 return ret;
2840 }
2841
2842 data->oob_wake_irq = irq;
2843 disable_irq(irq);
2844 bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
2845 return 0;
2846 }
2847 #endif
2848
2849 static int btusb_probe(struct usb_interface *intf,
2850 const struct usb_device_id *id)
2851 {
2852 struct usb_endpoint_descriptor *ep_desc;
2853 struct btusb_data *data;
2854 struct hci_dev *hdev;
2855 unsigned ifnum_base;
2856 int i, err;
2857
2858 BT_DBG("intf %p id %p", intf, id);
2859
2860 /* interface numbers are hardcoded in the spec */
2861 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
2862 if (!(id->driver_info & BTUSB_IFNUM_2))
2863 return -ENODEV;
2864 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
2865 return -ENODEV;
2866 }
2867
2868 ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
2869
2870 if (!id->driver_info) {
2871 const struct usb_device_id *match;
2872
2873 match = usb_match_id(intf, blacklist_table);
2874 if (match)
2875 id = match;
2876 }
2877
2878 if (id->driver_info == BTUSB_IGNORE)
2879 return -ENODEV;
2880
2881 if (id->driver_info & BTUSB_ATH3012) {
2882 struct usb_device *udev = interface_to_usbdev(intf);
2883
2884 /* Old firmware would otherwise let ath3k driver load
2885 * patch and sysconfig files */
2886 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2887 return -ENODEV;
2888 }
2889
2890 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2891 if (!data)
2892 return -ENOMEM;
2893
2894 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2895 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2896
2897 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2898 data->intr_ep = ep_desc;
2899 continue;
2900 }
2901
2902 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2903 data->bulk_tx_ep = ep_desc;
2904 continue;
2905 }
2906
2907 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2908 data->bulk_rx_ep = ep_desc;
2909 continue;
2910 }
2911 }
2912
2913 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2914 return -ENODEV;
2915
2916 if (id->driver_info & BTUSB_AMP) {
2917 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2918 data->cmdreq = 0x2b;
2919 } else {
2920 data->cmdreq_type = USB_TYPE_CLASS;
2921 data->cmdreq = 0x00;
2922 }
2923
2924 data->udev = interface_to_usbdev(intf);
2925 data->intf = intf;
2926
2927 INIT_WORK(&data->work, btusb_work);
2928 INIT_WORK(&data->waker, btusb_waker);
2929 init_usb_anchor(&data->deferred);
2930 init_usb_anchor(&data->tx_anchor);
2931 spin_lock_init(&data->txlock);
2932
2933 init_usb_anchor(&data->intr_anchor);
2934 init_usb_anchor(&data->bulk_anchor);
2935 init_usb_anchor(&data->isoc_anchor);
2936 init_usb_anchor(&data->diag_anchor);
2937 spin_lock_init(&data->rxlock);
2938
2939 if (id->driver_info & BTUSB_INTEL_NEW) {
2940 data->recv_event = btusb_recv_event_intel;
2941 data->recv_bulk = btusb_recv_bulk_intel;
2942 set_bit(BTUSB_BOOTLOADER, &data->flags);
2943 } else {
2944 data->recv_event = hci_recv_frame;
2945 data->recv_bulk = btusb_recv_bulk;
2946 }
2947
2948 hdev = hci_alloc_dev();
2949 if (!hdev)
2950 return -ENOMEM;
2951
2952 hdev->bus = HCI_USB;
2953 hci_set_drvdata(hdev, data);
2954
2955 if (id->driver_info & BTUSB_AMP)
2956 hdev->dev_type = HCI_AMP;
2957 else
2958 hdev->dev_type = HCI_PRIMARY;
2959
2960 data->hdev = hdev;
2961
2962 SET_HCIDEV_DEV(hdev, &intf->dev);
2963
2964 hdev->open = btusb_open;
2965 hdev->close = btusb_close;
2966 hdev->flush = btusb_flush;
2967 hdev->send = btusb_send_frame;
2968 hdev->notify = btusb_notify;
2969
2970 #ifdef CONFIG_PM
2971 err = btusb_config_oob_wake(hdev);
2972 if (err)
2973 goto out_free_dev;
2974
2975 /* Marvell devices may need a specific chip configuration */
2976 if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
2977 err = marvell_config_oob_wake(hdev);
2978 if (err)
2979 goto out_free_dev;
2980 }
2981 #endif
2982 if (id->driver_info & BTUSB_CW6622)
2983 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2984
2985 if (id->driver_info & BTUSB_BCM2045)
2986 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2987
2988 if (id->driver_info & BTUSB_BCM92035)
2989 hdev->setup = btusb_setup_bcm92035;
2990
2991 #ifdef CONFIG_BT_HCIBTUSB_BCM
2992 if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2993 hdev->manufacturer = 15;
2994 hdev->setup = btbcm_setup_patchram;
2995 hdev->set_diag = btusb_bcm_set_diag;
2996 hdev->set_bdaddr = btbcm_set_bdaddr;
2997
2998 /* Broadcom LM_DIAG Interface numbers are hardcoded */
2999 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3000 }
3001
3002 if (id->driver_info & BTUSB_BCM_APPLE) {
3003 hdev->manufacturer = 15;
3004 hdev->setup = btbcm_setup_apple;
3005 hdev->set_diag = btusb_bcm_set_diag;
3006
3007 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3008 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3009 }
3010 #endif
3011
3012 if (id->driver_info & BTUSB_INTEL) {
3013 hdev->manufacturer = 2;
3014 hdev->setup = btusb_setup_intel;
3015 hdev->shutdown = btusb_shutdown_intel;
3016 hdev->set_diag = btintel_set_diag_mfg;
3017 hdev->set_bdaddr = btintel_set_bdaddr;
3018 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3019 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3020 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3021 }
3022
3023 if (id->driver_info & BTUSB_INTEL_NEW) {
3024 hdev->manufacturer = 2;
3025 hdev->send = btusb_send_frame_intel;
3026 hdev->setup = btusb_setup_intel_new;
3027 hdev->hw_error = btintel_hw_error;
3028 hdev->set_diag = btintel_set_diag;
3029 hdev->set_bdaddr = btintel_set_bdaddr;
3030 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3031 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3032 }
3033
3034 if (id->driver_info & BTUSB_MARVELL)
3035 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3036
3037 if (id->driver_info & BTUSB_SWAVE) {
3038 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3039 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3040 }
3041
3042 if (id->driver_info & BTUSB_INTEL_BOOT) {
3043 hdev->manufacturer = 2;
3044 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3045 }
3046
3047 if (id->driver_info & BTUSB_ATH3012) {
3048 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3049 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3050 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3051 }
3052
3053 if (id->driver_info & BTUSB_QCA_ROME) {
3054 data->setup_on_usb = btusb_setup_qca;
3055 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3056 }
3057
3058 #ifdef CONFIG_BT_HCIBTUSB_RTL
3059 if (id->driver_info & BTUSB_REALTEK) {
3060 hdev->setup = btrtl_setup_realtek;
3061
3062 /* Realtek devices lose their updated firmware over suspend,
3063 * but the USB hub doesn't notice any status change.
3064 * Explicitly request a device reset on resume.
3065 */
3066 set_bit(BTUSB_RESET_RESUME, &data->flags);
3067 }
3068 #endif
3069
3070 if (id->driver_info & BTUSB_AMP) {
3071 /* AMP controllers do not support SCO packets */
3072 data->isoc = NULL;
3073 } else {
3074 /* Interface orders are hardcoded in the specification */
3075 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
3076 }
3077
3078 if (!reset)
3079 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3080
3081 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3082 if (!disable_scofix)
3083 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3084 }
3085
3086 if (id->driver_info & BTUSB_BROKEN_ISOC)
3087 data->isoc = NULL;
3088
3089 if (id->driver_info & BTUSB_DIGIANSWER) {
3090 data->cmdreq_type = USB_TYPE_VENDOR;
3091 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3092 }
3093
3094 if (id->driver_info & BTUSB_CSR) {
3095 struct usb_device *udev = data->udev;
3096 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3097
3098 /* Old firmware would otherwise execute USB reset */
3099 if (bcdDevice < 0x117)
3100 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3101
3102 /* Fake CSR devices with broken commands */
3103 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3104 hdev->setup = btusb_setup_csr;
3105
3106 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3107 }
3108
3109 if (id->driver_info & BTUSB_SNIFFER) {
3110 struct usb_device *udev = data->udev;
3111
3112 /* New sniffer firmware has crippled HCI interface */
3113 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3114 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3115 }
3116
3117 if (id->driver_info & BTUSB_INTEL_BOOT) {
3118 /* A bug in the bootloader causes that interrupt interface is
3119 * only enabled after receiving SetInterface(0, AltSetting=0).
3120 */
3121 err = usb_set_interface(data->udev, 0, 0);
3122 if (err < 0) {
3123 BT_ERR("failed to set interface 0, alt 0 %d", err);
3124 goto out_free_dev;
3125 }
3126 }
3127
3128 if (data->isoc) {
3129 err = usb_driver_claim_interface(&btusb_driver,
3130 data->isoc, data);
3131 if (err < 0)
3132 goto out_free_dev;
3133 }
3134
3135 #ifdef CONFIG_BT_HCIBTUSB_BCM
3136 if (data->diag) {
3137 if (!usb_driver_claim_interface(&btusb_driver,
3138 data->diag, data))
3139 __set_diag_interface(hdev);
3140 else
3141 data->diag = NULL;
3142 }
3143 #endif
3144
3145 err = hci_register_dev(hdev);
3146 if (err < 0)
3147 goto out_free_dev;
3148
3149 usb_set_intfdata(intf, data);
3150
3151 return 0;
3152
3153 out_free_dev:
3154 hci_free_dev(hdev);
3155 return err;
3156 }
3157
3158 static void btusb_disconnect(struct usb_interface *intf)
3159 {
3160 struct btusb_data *data = usb_get_intfdata(intf);
3161 struct hci_dev *hdev;
3162
3163 BT_DBG("intf %p", intf);
3164
3165 if (!data)
3166 return;
3167
3168 hdev = data->hdev;
3169 usb_set_intfdata(data->intf, NULL);
3170
3171 if (data->isoc)
3172 usb_set_intfdata(data->isoc, NULL);
3173
3174 if (data->diag)
3175 usb_set_intfdata(data->diag, NULL);
3176
3177 hci_unregister_dev(hdev);
3178
3179 if (intf == data->intf) {
3180 if (data->isoc)
3181 usb_driver_release_interface(&btusb_driver, data->isoc);
3182 if (data->diag)
3183 usb_driver_release_interface(&btusb_driver, data->diag);
3184 } else if (intf == data->isoc) {
3185 if (data->diag)
3186 usb_driver_release_interface(&btusb_driver, data->diag);
3187 usb_driver_release_interface(&btusb_driver, data->intf);
3188 } else if (intf == data->diag) {
3189 usb_driver_release_interface(&btusb_driver, data->intf);
3190 if (data->isoc)
3191 usb_driver_release_interface(&btusb_driver, data->isoc);
3192 }
3193
3194 if (data->oob_wake_irq)
3195 device_init_wakeup(&data->udev->dev, false);
3196
3197 hci_free_dev(hdev);
3198 }
3199
3200 #ifdef CONFIG_PM
3201 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3202 {
3203 struct btusb_data *data = usb_get_intfdata(intf);
3204
3205 BT_DBG("intf %p", intf);
3206
3207 if (data->suspend_count++)
3208 return 0;
3209
3210 spin_lock_irq(&data->txlock);
3211 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3212 set_bit(BTUSB_SUSPENDING, &data->flags);
3213 spin_unlock_irq(&data->txlock);
3214 } else {
3215 spin_unlock_irq(&data->txlock);
3216 data->suspend_count--;
3217 return -EBUSY;
3218 }
3219
3220 cancel_work_sync(&data->work);
3221
3222 btusb_stop_traffic(data);
3223 usb_kill_anchored_urbs(&data->tx_anchor);
3224
3225 if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
3226 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3227 enable_irq_wake(data->oob_wake_irq);
3228 enable_irq(data->oob_wake_irq);
3229 }
3230
3231 /* Optionally request a device reset on resume, but only when
3232 * wakeups are disabled. If wakeups are enabled we assume the
3233 * device will stay powered up throughout suspend.
3234 */
3235 if (test_bit(BTUSB_RESET_RESUME, &data->flags) &&
3236 !device_may_wakeup(&data->udev->dev))
3237 data->udev->reset_resume = 1;
3238
3239 return 0;
3240 }
3241
3242 static void play_deferred(struct btusb_data *data)
3243 {
3244 struct urb *urb;
3245 int err;
3246
3247 while ((urb = usb_get_from_anchor(&data->deferred))) {
3248 err = usb_submit_urb(urb, GFP_ATOMIC);
3249 if (err < 0)
3250 break;
3251
3252 data->tx_in_flight++;
3253 }
3254 usb_scuttle_anchored_urbs(&data->deferred);
3255 }
3256
3257 static int btusb_resume(struct usb_interface *intf)
3258 {
3259 struct btusb_data *data = usb_get_intfdata(intf);
3260 struct hci_dev *hdev = data->hdev;
3261 int err = 0;
3262
3263 BT_DBG("intf %p", intf);
3264
3265 if (--data->suspend_count)
3266 return 0;
3267
3268 /* Disable only if not already disabled (keep it balanced) */
3269 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3270 disable_irq(data->oob_wake_irq);
3271 disable_irq_wake(data->oob_wake_irq);
3272 }
3273
3274 if (!test_bit(HCI_RUNNING, &hdev->flags))
3275 goto done;
3276
3277 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3278 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3279 if (err < 0) {
3280 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3281 goto failed;
3282 }
3283 }
3284
3285 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3286 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3287 if (err < 0) {
3288 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3289 goto failed;
3290 }
3291
3292 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3293 }
3294
3295 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3296 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3297 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3298 else
3299 btusb_submit_isoc_urb(hdev, GFP_NOIO);
3300 }
3301
3302 spin_lock_irq(&data->txlock);
3303 play_deferred(data);
3304 clear_bit(BTUSB_SUSPENDING, &data->flags);
3305 spin_unlock_irq(&data->txlock);
3306 schedule_work(&data->work);
3307
3308 return 0;
3309
3310 failed:
3311 usb_scuttle_anchored_urbs(&data->deferred);
3312 done:
3313 spin_lock_irq(&data->txlock);
3314 clear_bit(BTUSB_SUSPENDING, &data->flags);
3315 spin_unlock_irq(&data->txlock);
3316
3317 return err;
3318 }
3319 #endif
3320
3321 static struct usb_driver btusb_driver = {
3322 .name = "btusb",
3323 .probe = btusb_probe,
3324 .disconnect = btusb_disconnect,
3325 #ifdef CONFIG_PM
3326 .suspend = btusb_suspend,
3327 .resume = btusb_resume,
3328 #endif
3329 .id_table = btusb_table,
3330 .supports_autosuspend = 1,
3331 .disable_hub_initiated_lpm = 1,
3332 };
3333
3334 module_usb_driver(btusb_driver);
3335
3336 module_param(disable_scofix, bool, 0644);
3337 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3338
3339 module_param(force_scofix, bool, 0644);
3340 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3341
3342 module_param(reset, bool, 0644);
3343 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3344
3345 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3346 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3347 MODULE_VERSION(VERSION);
3348 MODULE_LICENSE("GPL");
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