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target: Fix kref->refcount underflow in transport_cmd_finish_abort
[linux/fpc-iii.git] / drivers / bluetooth / btusb.c
blobdd220fad366cbcdc1e42905e4d0744fe252ba526
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 <asm/unaligned.h>
28
29 #include <net/bluetooth/bluetooth.h>
30 #include <net/bluetooth/hci_core.h>
31
32 #include "btintel.h"
33 #include "btbcm.h"
34 #include "btrtl.h"
35
36 #define VERSION "0.8"
37
38 static bool disable_scofix;
39 static bool force_scofix;
40
41 static bool reset = true;
42
43 static struct usb_driver btusb_driver;
44
45 #define BTUSB_IGNORE 0x01
46 #define BTUSB_DIGIANSWER 0x02
47 #define BTUSB_CSR 0x04
48 #define BTUSB_SNIFFER 0x08
49 #define BTUSB_BCM92035 0x10
50 #define BTUSB_BROKEN_ISOC 0x20
51 #define BTUSB_WRONG_SCO_MTU 0x40
52 #define BTUSB_ATH3012 0x80
53 #define BTUSB_INTEL 0x100
54 #define BTUSB_INTEL_BOOT 0x200
55 #define BTUSB_BCM_PATCHRAM 0x400
56 #define BTUSB_MARVELL 0x800
57 #define BTUSB_SWAVE 0x1000
58 #define BTUSB_INTEL_NEW 0x2000
59 #define BTUSB_AMP 0x4000
60 #define BTUSB_QCA_ROME 0x8000
61 #define BTUSB_BCM_APPLE 0x10000
62 #define BTUSB_REALTEK 0x20000
63 #define BTUSB_BCM2045 0x40000
64 #define BTUSB_IFNUM_2 0x80000
65 #define BTUSB_CW6622 0x100000
66
67 static const struct usb_device_id btusb_table[] = {
68 /* Generic Bluetooth USB device */
69 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
70
71 /* Generic Bluetooth AMP device */
72 { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
73
74 /* Generic Bluetooth USB interface */
75 { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
76
77 /* Apple-specific (Broadcom) devices */
78 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
79 .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
80
81 /* MediaTek MT76x0E */
82 { USB_DEVICE(0x0e8d, 0x763f) },
83
84 /* Broadcom SoftSailing reporting vendor specific */
85 { USB_DEVICE(0x0a5c, 0x21e1) },
86
87 /* Apple MacBookPro 7,1 */
88 { USB_DEVICE(0x05ac, 0x8213) },
89
90 /* Apple iMac11,1 */
91 { USB_DEVICE(0x05ac, 0x8215) },
92
93 /* Apple MacBookPro6,2 */
94 { USB_DEVICE(0x05ac, 0x8218) },
95
96 /* Apple MacBookAir3,1, MacBookAir3,2 */
97 { USB_DEVICE(0x05ac, 0x821b) },
98
99 /* Apple MacBookAir4,1 */
100 { USB_DEVICE(0x05ac, 0x821f) },
101
102 /* Apple MacBookPro8,2 */
103 { USB_DEVICE(0x05ac, 0x821a) },
104
105 /* Apple MacMini5,1 */
106 { USB_DEVICE(0x05ac, 0x8281) },
107
108 /* AVM BlueFRITZ! USB v2.0 */
109 { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
110
111 /* Bluetooth Ultraport Module from IBM */
112 { USB_DEVICE(0x04bf, 0x030a) },
113
114 /* ALPS Modules with non-standard id */
115 { USB_DEVICE(0x044e, 0x3001) },
116 { USB_DEVICE(0x044e, 0x3002) },
117
118 /* Ericsson with non-standard id */
119 { USB_DEVICE(0x0bdb, 0x1002) },
120
121 /* Canyon CN-BTU1 with HID interfaces */
122 { USB_DEVICE(0x0c10, 0x0000) },
123
124 /* Broadcom BCM20702A0 */
125 { USB_DEVICE(0x413c, 0x8197) },
126
127 /* Broadcom BCM20702B0 (Dynex/Insignia) */
128 { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
129
130 /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
131 { USB_DEVICE(0x105b, 0xe065), .driver_info = BTUSB_BCM_PATCHRAM },
132
133 /* Foxconn - Hon Hai */
134 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
135 .driver_info = BTUSB_BCM_PATCHRAM },
136
137 /* Lite-On Technology - Broadcom based */
138 { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
139 .driver_info = BTUSB_BCM_PATCHRAM },
140
141 /* Broadcom devices with vendor specific id */
142 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
143 .driver_info = BTUSB_BCM_PATCHRAM },
144
145 /* ASUSTek Computer - Broadcom based */
146 { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
147 .driver_info = BTUSB_BCM_PATCHRAM },
148
149 /* Belkin F8065bf - Broadcom based */
150 { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
151 .driver_info = BTUSB_BCM_PATCHRAM },
152
153 /* IMC Networks - Broadcom based */
154 { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
155 .driver_info = BTUSB_BCM_PATCHRAM },
156
157 /* Toshiba Corp - Broadcom based */
158 { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
159 .driver_info = BTUSB_BCM_PATCHRAM },
160
161 /* Intel Bluetooth USB Bootloader (RAM module) */
162 { USB_DEVICE(0x8087, 0x0a5a),
163 .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
164
165 { } /* Terminating entry */
166 };
167
168 MODULE_DEVICE_TABLE(usb, btusb_table);
169
170 static const struct usb_device_id blacklist_table[] = {
171 /* CSR BlueCore devices */
172 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
173
174 /* Broadcom BCM2033 without firmware */
175 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
176
177 /* Broadcom BCM2045 devices */
178 { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
179
180 /* Atheros 3011 with sflash firmware */
181 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
182 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
183 { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
184 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
185 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
186 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
187 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
188
189 /* Atheros AR9285 Malbec with sflash firmware */
190 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
191
192 /* Atheros 3012 with sflash firmware */
193 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
194 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
195 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
196 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
197 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
198 { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
199 { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
200 { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
201 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
202 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
203 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
204 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
205 { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
206 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
207 { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
208 { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
209 { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
210 { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
211 { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
212 { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
213 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
214 { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
215 { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
216 { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
217 { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
218 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
219 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
220 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
221 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
222 { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
223 { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
224 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
225 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
226 { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
227 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
228 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
229 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
230 { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
231 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
232 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
233 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
234 { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
235 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
236 { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
237 { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
238 { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
239 { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
240 { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
241 { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
242 { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
243
244 /* Atheros AR5BBU12 with sflash firmware */
245 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
246
247 /* Atheros AR5BBU12 with sflash firmware */
248 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
249 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
250
251 /* QCA ROME chipset */
252 { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
253 { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME },
254 { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
255 { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
256 { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME },
257 { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME },
258
259 /* Broadcom BCM2035 */
260 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
261 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
262 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
263
264 /* Broadcom BCM2045 */
265 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
266 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
267
268 /* IBM/Lenovo ThinkPad with Broadcom chip */
269 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
270 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
271
272 /* HP laptop with Broadcom chip */
273 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
274
275 /* Dell laptop with Broadcom chip */
276 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
277
278 /* Dell Wireless 370 and 410 devices */
279 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
280 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
281
282 /* Belkin F8T012 and F8T013 devices */
283 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
284 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
285
286 /* Asus WL-BTD202 device */
287 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
288
289 /* Kensington Bluetooth USB adapter */
290 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
291
292 /* RTX Telecom based adapters with buggy SCO support */
293 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
294 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
295
296 /* CONWISE Technology based adapters with buggy SCO support */
297 { USB_DEVICE(0x0e5e, 0x6622),
298 .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
299
300 /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
301 { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
302
303 /* Digianswer devices */
304 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
305 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
306
307 /* CSR BlueCore Bluetooth Sniffer */
308 { USB_DEVICE(0x0a12, 0x0002),
309 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
310
311 /* Frontline ComProbe Bluetooth Sniffer */
312 { USB_DEVICE(0x16d3, 0x0002),
313 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
314
315 /* Marvell Bluetooth devices */
316 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
317 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
318 { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
319
320 /* Intel Bluetooth devices */
321 { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
322 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
323 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
324 { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
325 { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL },
326
327 /* Other Intel Bluetooth devices */
328 { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
329 .driver_info = BTUSB_IGNORE },
330
331 /* Realtek Bluetooth devices */
332 { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
333 .driver_info = BTUSB_REALTEK },
334
335 /* Additional Realtek 8723AE Bluetooth devices */
336 { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
337 { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
338
339 /* Additional Realtek 8723BE Bluetooth devices */
340 { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
341 { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
342 { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
343 { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
344 { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
345
346 /* Additional Realtek 8821AE Bluetooth devices */
347 { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
348 { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
349 { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
350 { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
351 { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
352
353 /* Silicon Wave based devices */
354 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
355
356 { } /* Terminating entry */
357 };
358
359 #define BTUSB_MAX_ISOC_FRAMES 10
360
361 #define BTUSB_INTR_RUNNING 0
362 #define BTUSB_BULK_RUNNING 1
363 #define BTUSB_ISOC_RUNNING 2
364 #define BTUSB_SUSPENDING 3
365 #define BTUSB_DID_ISO_RESUME 4
366 #define BTUSB_BOOTLOADER 5
367 #define BTUSB_DOWNLOADING 6
368 #define BTUSB_FIRMWARE_LOADED 7
369 #define BTUSB_FIRMWARE_FAILED 8
370 #define BTUSB_BOOTING 9
371 #define BTUSB_RESET_RESUME 10
372 #define BTUSB_DIAG_RUNNING 11
373
374 struct btusb_data {
375 struct hci_dev *hdev;
376 struct usb_device *udev;
377 struct usb_interface *intf;
378 struct usb_interface *isoc;
379 struct usb_interface *diag;
380
381 unsigned long flags;
382
383 struct work_struct work;
384 struct work_struct waker;
385
386 struct usb_anchor deferred;
387 struct usb_anchor tx_anchor;
388 int tx_in_flight;
389 spinlock_t txlock;
390
391 struct usb_anchor intr_anchor;
392 struct usb_anchor bulk_anchor;
393 struct usb_anchor isoc_anchor;
394 struct usb_anchor diag_anchor;
395 spinlock_t rxlock;
396
397 struct sk_buff *evt_skb;
398 struct sk_buff *acl_skb;
399 struct sk_buff *sco_skb;
400
401 struct usb_endpoint_descriptor *intr_ep;
402 struct usb_endpoint_descriptor *bulk_tx_ep;
403 struct usb_endpoint_descriptor *bulk_rx_ep;
404 struct usb_endpoint_descriptor *isoc_tx_ep;
405 struct usb_endpoint_descriptor *isoc_rx_ep;
406 struct usb_endpoint_descriptor *diag_tx_ep;
407 struct usb_endpoint_descriptor *diag_rx_ep;
408
409 __u8 cmdreq_type;
410 __u8 cmdreq;
411
412 unsigned int sco_num;
413 int isoc_altsetting;
414 int suspend_count;
415
416 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
417 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
418
419 int (*setup_on_usb)(struct hci_dev *hdev);
420 };
421
422 static inline void btusb_free_frags(struct btusb_data *data)
423 {
424 unsigned long flags;
425
426 spin_lock_irqsave(&data->rxlock, flags);
427
428 kfree_skb(data->evt_skb);
429 data->evt_skb = NULL;
430
431 kfree_skb(data->acl_skb);
432 data->acl_skb = NULL;
433
434 kfree_skb(data->sco_skb);
435 data->sco_skb = NULL;
436
437 spin_unlock_irqrestore(&data->rxlock, flags);
438 }
439
440 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
441 {
442 struct sk_buff *skb;
443 int err = 0;
444
445 spin_lock(&data->rxlock);
446 skb = data->evt_skb;
447
448 while (count) {
449 int len;
450
451 if (!skb) {
452 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
453 if (!skb) {
454 err = -ENOMEM;
455 break;
456 }
457
458 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
459 hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
460 }
461
462 len = min_t(uint, hci_skb_expect(skb), count);
463 memcpy(skb_put(skb, len), buffer, len);
464
465 count -= len;
466 buffer += len;
467 hci_skb_expect(skb) -= len;
468
469 if (skb->len == HCI_EVENT_HDR_SIZE) {
470 /* Complete event header */
471 hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
472
473 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
474 kfree_skb(skb);
475 skb = NULL;
476
477 err = -EILSEQ;
478 break;
479 }
480 }
481
482 if (!hci_skb_expect(skb)) {
483 /* Complete frame */
484 data->recv_event(data->hdev, skb);
485 skb = NULL;
486 }
487 }
488
489 data->evt_skb = skb;
490 spin_unlock(&data->rxlock);
491
492 return err;
493 }
494
495 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
496 {
497 struct sk_buff *skb;
498 int err = 0;
499
500 spin_lock(&data->rxlock);
501 skb = data->acl_skb;
502
503 while (count) {
504 int len;
505
506 if (!skb) {
507 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
508 if (!skb) {
509 err = -ENOMEM;
510 break;
511 }
512
513 hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
514 hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
515 }
516
517 len = min_t(uint, hci_skb_expect(skb), count);
518 memcpy(skb_put(skb, len), buffer, len);
519
520 count -= len;
521 buffer += len;
522 hci_skb_expect(skb) -= len;
523
524 if (skb->len == HCI_ACL_HDR_SIZE) {
525 __le16 dlen = hci_acl_hdr(skb)->dlen;
526
527 /* Complete ACL header */
528 hci_skb_expect(skb) = __le16_to_cpu(dlen);
529
530 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
531 kfree_skb(skb);
532 skb = NULL;
533
534 err = -EILSEQ;
535 break;
536 }
537 }
538
539 if (!hci_skb_expect(skb)) {
540 /* Complete frame */
541 hci_recv_frame(data->hdev, skb);
542 skb = NULL;
543 }
544 }
545
546 data->acl_skb = skb;
547 spin_unlock(&data->rxlock);
548
549 return err;
550 }
551
552 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
553 {
554 struct sk_buff *skb;
555 int err = 0;
556
557 spin_lock(&data->rxlock);
558 skb = data->sco_skb;
559
560 while (count) {
561 int len;
562
563 if (!skb) {
564 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
565 if (!skb) {
566 err = -ENOMEM;
567 break;
568 }
569
570 hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
571 hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
572 }
573
574 len = min_t(uint, hci_skb_expect(skb), count);
575 memcpy(skb_put(skb, len), buffer, len);
576
577 count -= len;
578 buffer += len;
579 hci_skb_expect(skb) -= len;
580
581 if (skb->len == HCI_SCO_HDR_SIZE) {
582 /* Complete SCO header */
583 hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
584
585 if (skb_tailroom(skb) < hci_skb_expect(skb)) {
586 kfree_skb(skb);
587 skb = NULL;
588
589 err = -EILSEQ;
590 break;
591 }
592 }
593
594 if (!hci_skb_expect(skb)) {
595 /* Complete frame */
596 hci_recv_frame(data->hdev, skb);
597 skb = NULL;
598 }
599 }
600
601 data->sco_skb = skb;
602 spin_unlock(&data->rxlock);
603
604 return err;
605 }
606
607 static void btusb_intr_complete(struct urb *urb)
608 {
609 struct hci_dev *hdev = urb->context;
610 struct btusb_data *data = hci_get_drvdata(hdev);
611 int err;
612
613 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
614 urb->actual_length);
615
616 if (!test_bit(HCI_RUNNING, &hdev->flags))
617 return;
618
619 if (urb->status == 0) {
620 hdev->stat.byte_rx += urb->actual_length;
621
622 if (btusb_recv_intr(data, urb->transfer_buffer,
623 urb->actual_length) < 0) {
624 BT_ERR("%s corrupted event packet", hdev->name);
625 hdev->stat.err_rx++;
626 }
627 } else if (urb->status == -ENOENT) {
628 /* Avoid suspend failed when usb_kill_urb */
629 return;
630 }
631
632 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
633 return;
634
635 usb_mark_last_busy(data->udev);
636 usb_anchor_urb(urb, &data->intr_anchor);
637
638 err = usb_submit_urb(urb, GFP_ATOMIC);
639 if (err < 0) {
640 /* -EPERM: urb is being killed;
641 * -ENODEV: device got disconnected */
642 if (err != -EPERM && err != -ENODEV)
643 BT_ERR("%s urb %p failed to resubmit (%d)",
644 hdev->name, urb, -err);
645 usb_unanchor_urb(urb);
646 }
647 }
648
649 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
650 {
651 struct btusb_data *data = hci_get_drvdata(hdev);
652 struct urb *urb;
653 unsigned char *buf;
654 unsigned int pipe;
655 int err, size;
656
657 BT_DBG("%s", hdev->name);
658
659 if (!data->intr_ep)
660 return -ENODEV;
661
662 urb = usb_alloc_urb(0, mem_flags);
663 if (!urb)
664 return -ENOMEM;
665
666 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
667
668 buf = kmalloc(size, mem_flags);
669 if (!buf) {
670 usb_free_urb(urb);
671 return -ENOMEM;
672 }
673
674 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
675
676 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
677 btusb_intr_complete, hdev, data->intr_ep->bInterval);
678
679 urb->transfer_flags |= URB_FREE_BUFFER;
680
681 usb_anchor_urb(urb, &data->intr_anchor);
682
683 err = usb_submit_urb(urb, mem_flags);
684 if (err < 0) {
685 if (err != -EPERM && err != -ENODEV)
686 BT_ERR("%s urb %p submission failed (%d)",
687 hdev->name, urb, -err);
688 usb_unanchor_urb(urb);
689 }
690
691 usb_free_urb(urb);
692
693 return err;
694 }
695
696 static void btusb_bulk_complete(struct urb *urb)
697 {
698 struct hci_dev *hdev = urb->context;
699 struct btusb_data *data = hci_get_drvdata(hdev);
700 int err;
701
702 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
703 urb->actual_length);
704
705 if (!test_bit(HCI_RUNNING, &hdev->flags))
706 return;
707
708 if (urb->status == 0) {
709 hdev->stat.byte_rx += urb->actual_length;
710
711 if (data->recv_bulk(data, urb->transfer_buffer,
712 urb->actual_length) < 0) {
713 BT_ERR("%s corrupted ACL packet", hdev->name);
714 hdev->stat.err_rx++;
715 }
716 } else if (urb->status == -ENOENT) {
717 /* Avoid suspend failed when usb_kill_urb */
718 return;
719 }
720
721 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
722 return;
723
724 usb_anchor_urb(urb, &data->bulk_anchor);
725 usb_mark_last_busy(data->udev);
726
727 err = usb_submit_urb(urb, GFP_ATOMIC);
728 if (err < 0) {
729 /* -EPERM: urb is being killed;
730 * -ENODEV: device got disconnected */
731 if (err != -EPERM && err != -ENODEV)
732 BT_ERR("%s urb %p failed to resubmit (%d)",
733 hdev->name, urb, -err);
734 usb_unanchor_urb(urb);
735 }
736 }
737
738 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
739 {
740 struct btusb_data *data = hci_get_drvdata(hdev);
741 struct urb *urb;
742 unsigned char *buf;
743 unsigned int pipe;
744 int err, size = HCI_MAX_FRAME_SIZE;
745
746 BT_DBG("%s", hdev->name);
747
748 if (!data->bulk_rx_ep)
749 return -ENODEV;
750
751 urb = usb_alloc_urb(0, mem_flags);
752 if (!urb)
753 return -ENOMEM;
754
755 buf = kmalloc(size, mem_flags);
756 if (!buf) {
757 usb_free_urb(urb);
758 return -ENOMEM;
759 }
760
761 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
762
763 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
764 btusb_bulk_complete, hdev);
765
766 urb->transfer_flags |= URB_FREE_BUFFER;
767
768 usb_mark_last_busy(data->udev);
769 usb_anchor_urb(urb, &data->bulk_anchor);
770
771 err = usb_submit_urb(urb, mem_flags);
772 if (err < 0) {
773 if (err != -EPERM && err != -ENODEV)
774 BT_ERR("%s urb %p submission failed (%d)",
775 hdev->name, urb, -err);
776 usb_unanchor_urb(urb);
777 }
778
779 usb_free_urb(urb);
780
781 return err;
782 }
783
784 static void btusb_isoc_complete(struct urb *urb)
785 {
786 struct hci_dev *hdev = urb->context;
787 struct btusb_data *data = hci_get_drvdata(hdev);
788 int i, err;
789
790 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
791 urb->actual_length);
792
793 if (!test_bit(HCI_RUNNING, &hdev->flags))
794 return;
795
796 if (urb->status == 0) {
797 for (i = 0; i < urb->number_of_packets; i++) {
798 unsigned int offset = urb->iso_frame_desc[i].offset;
799 unsigned int length = urb->iso_frame_desc[i].actual_length;
800
801 if (urb->iso_frame_desc[i].status)
802 continue;
803
804 hdev->stat.byte_rx += length;
805
806 if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
807 length) < 0) {
808 BT_ERR("%s corrupted SCO packet", hdev->name);
809 hdev->stat.err_rx++;
810 }
811 }
812 } else if (urb->status == -ENOENT) {
813 /* Avoid suspend failed when usb_kill_urb */
814 return;
815 }
816
817 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
818 return;
819
820 usb_anchor_urb(urb, &data->isoc_anchor);
821
822 err = usb_submit_urb(urb, GFP_ATOMIC);
823 if (err < 0) {
824 /* -EPERM: urb is being killed;
825 * -ENODEV: device got disconnected */
826 if (err != -EPERM && err != -ENODEV)
827 BT_ERR("%s urb %p failed to resubmit (%d)",
828 hdev->name, urb, -err);
829 usb_unanchor_urb(urb);
830 }
831 }
832
833 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
834 {
835 int i, offset = 0;
836
837 BT_DBG("len %d mtu %d", len, mtu);
838
839 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
840 i++, offset += mtu, len -= mtu) {
841 urb->iso_frame_desc[i].offset = offset;
842 urb->iso_frame_desc[i].length = mtu;
843 }
844
845 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
846 urb->iso_frame_desc[i].offset = offset;
847 urb->iso_frame_desc[i].length = len;
848 i++;
849 }
850
851 urb->number_of_packets = i;
852 }
853
854 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
855 {
856 struct btusb_data *data = hci_get_drvdata(hdev);
857 struct urb *urb;
858 unsigned char *buf;
859 unsigned int pipe;
860 int err, size;
861
862 BT_DBG("%s", hdev->name);
863
864 if (!data->isoc_rx_ep)
865 return -ENODEV;
866
867 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
868 if (!urb)
869 return -ENOMEM;
870
871 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
872 BTUSB_MAX_ISOC_FRAMES;
873
874 buf = kmalloc(size, mem_flags);
875 if (!buf) {
876 usb_free_urb(urb);
877 return -ENOMEM;
878 }
879
880 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
881
882 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
883 hdev, data->isoc_rx_ep->bInterval);
884
885 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
886
887 __fill_isoc_descriptor(urb, size,
888 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
889
890 usb_anchor_urb(urb, &data->isoc_anchor);
891
892 err = usb_submit_urb(urb, mem_flags);
893 if (err < 0) {
894 if (err != -EPERM && err != -ENODEV)
895 BT_ERR("%s urb %p submission failed (%d)",
896 hdev->name, urb, -err);
897 usb_unanchor_urb(urb);
898 }
899
900 usb_free_urb(urb);
901
902 return err;
903 }
904
905 static void btusb_diag_complete(struct urb *urb)
906 {
907 struct hci_dev *hdev = urb->context;
908 struct btusb_data *data = hci_get_drvdata(hdev);
909 int err;
910
911 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
912 urb->actual_length);
913
914 if (urb->status == 0) {
915 struct sk_buff *skb;
916
917 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
918 if (skb) {
919 memcpy(skb_put(skb, urb->actual_length),
920 urb->transfer_buffer, urb->actual_length);
921 hci_recv_diag(hdev, skb);
922 }
923 } else if (urb->status == -ENOENT) {
924 /* Avoid suspend failed when usb_kill_urb */
925 return;
926 }
927
928 if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
929 return;
930
931 usb_anchor_urb(urb, &data->diag_anchor);
932 usb_mark_last_busy(data->udev);
933
934 err = usb_submit_urb(urb, GFP_ATOMIC);
935 if (err < 0) {
936 /* -EPERM: urb is being killed;
937 * -ENODEV: device got disconnected */
938 if (err != -EPERM && err != -ENODEV)
939 BT_ERR("%s urb %p failed to resubmit (%d)",
940 hdev->name, urb, -err);
941 usb_unanchor_urb(urb);
942 }
943 }
944
945 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
946 {
947 struct btusb_data *data = hci_get_drvdata(hdev);
948 struct urb *urb;
949 unsigned char *buf;
950 unsigned int pipe;
951 int err, size = HCI_MAX_FRAME_SIZE;
952
953 BT_DBG("%s", hdev->name);
954
955 if (!data->diag_rx_ep)
956 return -ENODEV;
957
958 urb = usb_alloc_urb(0, mem_flags);
959 if (!urb)
960 return -ENOMEM;
961
962 buf = kmalloc(size, mem_flags);
963 if (!buf) {
964 usb_free_urb(urb);
965 return -ENOMEM;
966 }
967
968 pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
969
970 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
971 btusb_diag_complete, hdev);
972
973 urb->transfer_flags |= URB_FREE_BUFFER;
974
975 usb_mark_last_busy(data->udev);
976 usb_anchor_urb(urb, &data->diag_anchor);
977
978 err = usb_submit_urb(urb, mem_flags);
979 if (err < 0) {
980 if (err != -EPERM && err != -ENODEV)
981 BT_ERR("%s urb %p submission failed (%d)",
982 hdev->name, urb, -err);
983 usb_unanchor_urb(urb);
984 }
985
986 usb_free_urb(urb);
987
988 return err;
989 }
990
991 static void btusb_tx_complete(struct urb *urb)
992 {
993 struct sk_buff *skb = urb->context;
994 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
995 struct btusb_data *data = hci_get_drvdata(hdev);
996
997 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
998 urb->actual_length);
999
1000 if (!test_bit(HCI_RUNNING, &hdev->flags))
1001 goto done;
1002
1003 if (!urb->status)
1004 hdev->stat.byte_tx += urb->transfer_buffer_length;
1005 else
1006 hdev->stat.err_tx++;
1007
1008 done:
1009 spin_lock(&data->txlock);
1010 data->tx_in_flight--;
1011 spin_unlock(&data->txlock);
1012
1013 kfree(urb->setup_packet);
1014
1015 kfree_skb(skb);
1016 }
1017
1018 static void btusb_isoc_tx_complete(struct urb *urb)
1019 {
1020 struct sk_buff *skb = urb->context;
1021 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1022
1023 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1024 urb->actual_length);
1025
1026 if (!test_bit(HCI_RUNNING, &hdev->flags))
1027 goto done;
1028
1029 if (!urb->status)
1030 hdev->stat.byte_tx += urb->transfer_buffer_length;
1031 else
1032 hdev->stat.err_tx++;
1033
1034 done:
1035 kfree(urb->setup_packet);
1036
1037 kfree_skb(skb);
1038 }
1039
1040 static int btusb_open(struct hci_dev *hdev)
1041 {
1042 struct btusb_data *data = hci_get_drvdata(hdev);
1043 int err;
1044
1045 BT_DBG("%s", hdev->name);
1046
1047 err = usb_autopm_get_interface(data->intf);
1048 if (err < 0)
1049 return err;
1050
1051 /* Patching USB firmware files prior to starting any URBs of HCI path
1052 * It is more safe to use USB bulk channel for downloading USB patch
1053 */
1054 if (data->setup_on_usb) {
1055 err = data->setup_on_usb(hdev);
1056 if (err < 0)
1057 return err;
1058 }
1059
1060 data->intf->needs_remote_wakeup = 1;
1061
1062 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1063 goto done;
1064
1065 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1066 if (err < 0)
1067 goto failed;
1068
1069 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1070 if (err < 0) {
1071 usb_kill_anchored_urbs(&data->intr_anchor);
1072 goto failed;
1073 }
1074
1075 set_bit(BTUSB_BULK_RUNNING, &data->flags);
1076 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1077
1078 if (data->diag) {
1079 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1080 set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1081 }
1082
1083 done:
1084 usb_autopm_put_interface(data->intf);
1085 return 0;
1086
1087 failed:
1088 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1089 usb_autopm_put_interface(data->intf);
1090 return err;
1091 }
1092
1093 static void btusb_stop_traffic(struct btusb_data *data)
1094 {
1095 usb_kill_anchored_urbs(&data->intr_anchor);
1096 usb_kill_anchored_urbs(&data->bulk_anchor);
1097 usb_kill_anchored_urbs(&data->isoc_anchor);
1098 usb_kill_anchored_urbs(&data->diag_anchor);
1099 }
1100
1101 static int btusb_close(struct hci_dev *hdev)
1102 {
1103 struct btusb_data *data = hci_get_drvdata(hdev);
1104 int err;
1105
1106 BT_DBG("%s", hdev->name);
1107
1108 cancel_work_sync(&data->work);
1109 cancel_work_sync(&data->waker);
1110
1111 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1112 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1113 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1114 clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1115
1116 btusb_stop_traffic(data);
1117 btusb_free_frags(data);
1118
1119 err = usb_autopm_get_interface(data->intf);
1120 if (err < 0)
1121 goto failed;
1122
1123 data->intf->needs_remote_wakeup = 0;
1124 usb_autopm_put_interface(data->intf);
1125
1126 failed:
1127 usb_scuttle_anchored_urbs(&data->deferred);
1128 return 0;
1129 }
1130
1131 static int btusb_flush(struct hci_dev *hdev)
1132 {
1133 struct btusb_data *data = hci_get_drvdata(hdev);
1134
1135 BT_DBG("%s", hdev->name);
1136
1137 usb_kill_anchored_urbs(&data->tx_anchor);
1138 btusb_free_frags(data);
1139
1140 return 0;
1141 }
1142
1143 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1144 {
1145 struct btusb_data *data = hci_get_drvdata(hdev);
1146 struct usb_ctrlrequest *dr;
1147 struct urb *urb;
1148 unsigned int pipe;
1149
1150 urb = usb_alloc_urb(0, GFP_KERNEL);
1151 if (!urb)
1152 return ERR_PTR(-ENOMEM);
1153
1154 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1155 if (!dr) {
1156 usb_free_urb(urb);
1157 return ERR_PTR(-ENOMEM);
1158 }
1159
1160 dr->bRequestType = data->cmdreq_type;
1161 dr->bRequest = data->cmdreq;
1162 dr->wIndex = 0;
1163 dr->wValue = 0;
1164 dr->wLength = __cpu_to_le16(skb->len);
1165
1166 pipe = usb_sndctrlpipe(data->udev, 0x00);
1167
1168 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1169 skb->data, skb->len, btusb_tx_complete, skb);
1170
1171 skb->dev = (void *)hdev;
1172
1173 return urb;
1174 }
1175
1176 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1177 {
1178 struct btusb_data *data = hci_get_drvdata(hdev);
1179 struct urb *urb;
1180 unsigned int pipe;
1181
1182 if (!data->bulk_tx_ep)
1183 return ERR_PTR(-ENODEV);
1184
1185 urb = usb_alloc_urb(0, GFP_KERNEL);
1186 if (!urb)
1187 return ERR_PTR(-ENOMEM);
1188
1189 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1190
1191 usb_fill_bulk_urb(urb, data->udev, pipe,
1192 skb->data, skb->len, btusb_tx_complete, skb);
1193
1194 skb->dev = (void *)hdev;
1195
1196 return urb;
1197 }
1198
1199 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1200 {
1201 struct btusb_data *data = hci_get_drvdata(hdev);
1202 struct urb *urb;
1203 unsigned int pipe;
1204
1205 if (!data->isoc_tx_ep)
1206 return ERR_PTR(-ENODEV);
1207
1208 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1209 if (!urb)
1210 return ERR_PTR(-ENOMEM);
1211
1212 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1213
1214 usb_fill_int_urb(urb, data->udev, pipe,
1215 skb->data, skb->len, btusb_isoc_tx_complete,
1216 skb, data->isoc_tx_ep->bInterval);
1217
1218 urb->transfer_flags = URB_ISO_ASAP;
1219
1220 __fill_isoc_descriptor(urb, skb->len,
1221 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1222
1223 skb->dev = (void *)hdev;
1224
1225 return urb;
1226 }
1227
1228 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1229 {
1230 struct btusb_data *data = hci_get_drvdata(hdev);
1231 int err;
1232
1233 usb_anchor_urb(urb, &data->tx_anchor);
1234
1235 err = usb_submit_urb(urb, GFP_KERNEL);
1236 if (err < 0) {
1237 if (err != -EPERM && err != -ENODEV)
1238 BT_ERR("%s urb %p submission failed (%d)",
1239 hdev->name, urb, -err);
1240 kfree(urb->setup_packet);
1241 usb_unanchor_urb(urb);
1242 } else {
1243 usb_mark_last_busy(data->udev);
1244 }
1245
1246 usb_free_urb(urb);
1247 return err;
1248 }
1249
1250 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1251 {
1252 struct btusb_data *data = hci_get_drvdata(hdev);
1253 unsigned long flags;
1254 bool suspending;
1255
1256 spin_lock_irqsave(&data->txlock, flags);
1257 suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1258 if (!suspending)
1259 data->tx_in_flight++;
1260 spin_unlock_irqrestore(&data->txlock, flags);
1261
1262 if (!suspending)
1263 return submit_tx_urb(hdev, urb);
1264
1265 usb_anchor_urb(urb, &data->deferred);
1266 schedule_work(&data->waker);
1267
1268 usb_free_urb(urb);
1269 return 0;
1270 }
1271
1272 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1273 {
1274 struct urb *urb;
1275
1276 BT_DBG("%s", hdev->name);
1277
1278 switch (hci_skb_pkt_type(skb)) {
1279 case HCI_COMMAND_PKT:
1280 urb = alloc_ctrl_urb(hdev, skb);
1281 if (IS_ERR(urb))
1282 return PTR_ERR(urb);
1283
1284 hdev->stat.cmd_tx++;
1285 return submit_or_queue_tx_urb(hdev, urb);
1286
1287 case HCI_ACLDATA_PKT:
1288 urb = alloc_bulk_urb(hdev, skb);
1289 if (IS_ERR(urb))
1290 return PTR_ERR(urb);
1291
1292 hdev->stat.acl_tx++;
1293 return submit_or_queue_tx_urb(hdev, urb);
1294
1295 case HCI_SCODATA_PKT:
1296 if (hci_conn_num(hdev, SCO_LINK) < 1)
1297 return -ENODEV;
1298
1299 urb = alloc_isoc_urb(hdev, skb);
1300 if (IS_ERR(urb))
1301 return PTR_ERR(urb);
1302
1303 hdev->stat.sco_tx++;
1304 return submit_tx_urb(hdev, urb);
1305 }
1306
1307 return -EILSEQ;
1308 }
1309
1310 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1311 {
1312 struct btusb_data *data = hci_get_drvdata(hdev);
1313
1314 BT_DBG("%s evt %d", hdev->name, evt);
1315
1316 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1317 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1318 schedule_work(&data->work);
1319 }
1320 }
1321
1322 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1323 {
1324 struct btusb_data *data = hci_get_drvdata(hdev);
1325 struct usb_interface *intf = data->isoc;
1326 struct usb_endpoint_descriptor *ep_desc;
1327 int i, err;
1328
1329 if (!data->isoc)
1330 return -ENODEV;
1331
1332 err = usb_set_interface(data->udev, 1, altsetting);
1333 if (err < 0) {
1334 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1335 return err;
1336 }
1337
1338 data->isoc_altsetting = altsetting;
1339
1340 data->isoc_tx_ep = NULL;
1341 data->isoc_rx_ep = NULL;
1342
1343 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1344 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1345
1346 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1347 data->isoc_tx_ep = ep_desc;
1348 continue;
1349 }
1350
1351 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1352 data->isoc_rx_ep = ep_desc;
1353 continue;
1354 }
1355 }
1356
1357 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1358 BT_ERR("%s invalid SCO descriptors", hdev->name);
1359 return -ENODEV;
1360 }
1361
1362 return 0;
1363 }
1364
1365 static void btusb_work(struct work_struct *work)
1366 {
1367 struct btusb_data *data = container_of(work, struct btusb_data, work);
1368 struct hci_dev *hdev = data->hdev;
1369 int new_alts;
1370 int err;
1371
1372 if (data->sco_num > 0) {
1373 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1374 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1375 if (err < 0) {
1376 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1377 usb_kill_anchored_urbs(&data->isoc_anchor);
1378 return;
1379 }
1380
1381 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1382 }
1383
1384 if (hdev->voice_setting & 0x0020) {
1385 static const int alts[3] = { 2, 4, 5 };
1386
1387 new_alts = alts[data->sco_num - 1];
1388 } else {
1389 new_alts = data->sco_num;
1390 }
1391
1392 if (data->isoc_altsetting != new_alts) {
1393 unsigned long flags;
1394
1395 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1396 usb_kill_anchored_urbs(&data->isoc_anchor);
1397
1398 /* When isochronous alternate setting needs to be
1399 * changed, because SCO connection has been added
1400 * or removed, a packet fragment may be left in the
1401 * reassembling state. This could lead to wrongly
1402 * assembled fragments.
1403 *
1404 * Clear outstanding fragment when selecting a new
1405 * alternate setting.
1406 */
1407 spin_lock_irqsave(&data->rxlock, flags);
1408 kfree_skb(data->sco_skb);
1409 data->sco_skb = NULL;
1410 spin_unlock_irqrestore(&data->rxlock, flags);
1411
1412 if (__set_isoc_interface(hdev, new_alts) < 0)
1413 return;
1414 }
1415
1416 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1417 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1418 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1419 else
1420 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1421 }
1422 } else {
1423 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1424 usb_kill_anchored_urbs(&data->isoc_anchor);
1425
1426 __set_isoc_interface(hdev, 0);
1427 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1428 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1429 }
1430 }
1431
1432 static void btusb_waker(struct work_struct *work)
1433 {
1434 struct btusb_data *data = container_of(work, struct btusb_data, waker);
1435 int err;
1436
1437 err = usb_autopm_get_interface(data->intf);
1438 if (err < 0)
1439 return;
1440
1441 usb_autopm_put_interface(data->intf);
1442 }
1443
1444 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1445 {
1446 struct sk_buff *skb;
1447 u8 val = 0x00;
1448
1449 BT_DBG("%s", hdev->name);
1450
1451 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1452 if (IS_ERR(skb))
1453 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1454 else
1455 kfree_skb(skb);
1456
1457 return 0;
1458 }
1459
1460 static int btusb_setup_csr(struct hci_dev *hdev)
1461 {
1462 struct hci_rp_read_local_version *rp;
1463 struct sk_buff *skb;
1464
1465 BT_DBG("%s", hdev->name);
1466
1467 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1468 HCI_INIT_TIMEOUT);
1469 if (IS_ERR(skb)) {
1470 int err = PTR_ERR(skb);
1471 BT_ERR("%s: CSR: Local version failed (%d)", hdev->name, err);
1472 return err;
1473 }
1474
1475 if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1476 BT_ERR("%s: CSR: Local version length mismatch", hdev->name);
1477 kfree_skb(skb);
1478 return -EIO;
1479 }
1480
1481 rp = (struct hci_rp_read_local_version *)skb->data;
1482
1483 /* Detect controllers which aren't real CSR ones. */
1484 if (le16_to_cpu(rp->manufacturer) != 10 ||
1485 le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1486 /* Clear the reset quirk since this is not an actual
1487 * early Bluetooth 1.1 device from CSR.
1488 */
1489 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1490
1491 /* These fake CSR controllers have all a broken
1492 * stored link key handling and so just disable it.
1493 */
1494 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1495 }
1496
1497 kfree_skb(skb);
1498
1499 return 0;
1500 }
1501
1502 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1503 struct intel_version *ver)
1504 {
1505 const struct firmware *fw;
1506 char fwname[64];
1507 int ret;
1508
1509 snprintf(fwname, sizeof(fwname),
1510 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1511 ver->hw_platform, ver->hw_variant, ver->hw_revision,
1512 ver->fw_variant, ver->fw_revision, ver->fw_build_num,
1513 ver->fw_build_ww, ver->fw_build_yy);
1514
1515 ret = request_firmware(&fw, fwname, &hdev->dev);
1516 if (ret < 0) {
1517 if (ret == -EINVAL) {
1518 BT_ERR("%s Intel firmware file request failed (%d)",
1519 hdev->name, ret);
1520 return NULL;
1521 }
1522
1523 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1524 hdev->name, fwname, ret);
1525
1526 /* If the correct firmware patch file is not found, use the
1527 * default firmware patch file instead
1528 */
1529 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1530 ver->hw_platform, ver->hw_variant);
1531 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1532 BT_ERR("%s failed to open default Intel fw file: %s",
1533 hdev->name, fwname);
1534 return NULL;
1535 }
1536 }
1537
1538 BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1539
1540 return fw;
1541 }
1542
1543 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1544 const struct firmware *fw,
1545 const u8 **fw_ptr, int *disable_patch)
1546 {
1547 struct sk_buff *skb;
1548 struct hci_command_hdr *cmd;
1549 const u8 *cmd_param;
1550 struct hci_event_hdr *evt = NULL;
1551 const u8 *evt_param = NULL;
1552 int remain = fw->size - (*fw_ptr - fw->data);
1553
1554 /* The first byte indicates the types of the patch command or event.
1555 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1556 * in the current firmware buffer doesn't start with 0x01 or
1557 * the size of remain buffer is smaller than HCI command header,
1558 * the firmware file is corrupted and it should stop the patching
1559 * process.
1560 */
1561 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1562 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1563 return -EINVAL;
1564 }
1565 (*fw_ptr)++;
1566 remain--;
1567
1568 cmd = (struct hci_command_hdr *)(*fw_ptr);
1569 *fw_ptr += sizeof(*cmd);
1570 remain -= sizeof(*cmd);
1571
1572 /* Ensure that the remain firmware data is long enough than the length
1573 * of command parameter. If not, the firmware file is corrupted.
1574 */
1575 if (remain < cmd->plen) {
1576 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1577 return -EFAULT;
1578 }
1579
1580 /* If there is a command that loads a patch in the firmware
1581 * file, then enable the patch upon success, otherwise just
1582 * disable the manufacturer mode, for example patch activation
1583 * is not required when the default firmware patch file is used
1584 * because there are no patch data to load.
1585 */
1586 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1587 *disable_patch = 0;
1588
1589 cmd_param = *fw_ptr;
1590 *fw_ptr += cmd->plen;
1591 remain -= cmd->plen;
1592
1593 /* This reads the expected events when the above command is sent to the
1594 * device. Some vendor commands expects more than one events, for
1595 * example command status event followed by vendor specific event.
1596 * For this case, it only keeps the last expected event. so the command
1597 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1598 * last expected event.
1599 */
1600 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1601 (*fw_ptr)++;
1602 remain--;
1603
1604 evt = (struct hci_event_hdr *)(*fw_ptr);
1605 *fw_ptr += sizeof(*evt);
1606 remain -= sizeof(*evt);
1607
1608 if (remain < evt->plen) {
1609 BT_ERR("%s Intel fw corrupted: invalid evt len",
1610 hdev->name);
1611 return -EFAULT;
1612 }
1613
1614 evt_param = *fw_ptr;
1615 *fw_ptr += evt->plen;
1616 remain -= evt->plen;
1617 }
1618
1619 /* Every HCI commands in the firmware file has its correspond event.
1620 * If event is not found or remain is smaller than zero, the firmware
1621 * file is corrupted.
1622 */
1623 if (!evt || !evt_param || remain < 0) {
1624 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1625 return -EFAULT;
1626 }
1627
1628 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1629 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1630 if (IS_ERR(skb)) {
1631 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1632 hdev->name, cmd->opcode, PTR_ERR(skb));
1633 return PTR_ERR(skb);
1634 }
1635
1636 /* It ensures that the returned event matches the event data read from
1637 * the firmware file. At fist, it checks the length and then
1638 * the contents of the event.
1639 */
1640 if (skb->len != evt->plen) {
1641 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1642 le16_to_cpu(cmd->opcode));
1643 kfree_skb(skb);
1644 return -EFAULT;
1645 }
1646
1647 if (memcmp(skb->data, evt_param, evt->plen)) {
1648 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1649 hdev->name, le16_to_cpu(cmd->opcode));
1650 kfree_skb(skb);
1651 return -EFAULT;
1652 }
1653 kfree_skb(skb);
1654
1655 return 0;
1656 }
1657
1658 static int btusb_setup_intel(struct hci_dev *hdev)
1659 {
1660 struct sk_buff *skb;
1661 const struct firmware *fw;
1662 const u8 *fw_ptr;
1663 int disable_patch, err;
1664 struct intel_version ver;
1665
1666 BT_DBG("%s", hdev->name);
1667
1668 /* The controller has a bug with the first HCI command sent to it
1669 * returning number of completed commands as zero. This would stall the
1670 * command processing in the Bluetooth core.
1671 *
1672 * As a workaround, send HCI Reset command first which will reset the
1673 * number of completed commands and allow normal command processing
1674 * from now on.
1675 */
1676 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1677 if (IS_ERR(skb)) {
1678 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1679 hdev->name, PTR_ERR(skb));
1680 return PTR_ERR(skb);
1681 }
1682 kfree_skb(skb);
1683
1684 /* Read Intel specific controller version first to allow selection of
1685 * which firmware file to load.
1686 *
1687 * The returned information are hardware variant and revision plus
1688 * firmware variant, revision and build number.
1689 */
1690 err = btintel_read_version(hdev, &ver);
1691 if (err)
1692 return err;
1693
1694 BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1695 hdev->name, ver.hw_platform, ver.hw_variant, ver.hw_revision,
1696 ver.fw_variant, ver.fw_revision, ver.fw_build_num,
1697 ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
1698
1699 /* fw_patch_num indicates the version of patch the device currently
1700 * have. If there is no patch data in the device, it is always 0x00.
1701 * So, if it is other than 0x00, no need to patch the device again.
1702 */
1703 if (ver.fw_patch_num) {
1704 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1705 hdev->name, ver.fw_patch_num);
1706 goto complete;
1707 }
1708
1709 /* Opens the firmware patch file based on the firmware version read
1710 * from the controller. If it fails to open the matching firmware
1711 * patch file, it tries to open the default firmware patch file.
1712 * If no patch file is found, allow the device to operate without
1713 * a patch.
1714 */
1715 fw = btusb_setup_intel_get_fw(hdev, &ver);
1716 if (!fw)
1717 goto complete;
1718 fw_ptr = fw->data;
1719
1720 /* Enable the manufacturer mode of the controller.
1721 * Only while this mode is enabled, the driver can download the
1722 * firmware patch data and configuration parameters.
1723 */
1724 err = btintel_enter_mfg(hdev);
1725 if (err) {
1726 release_firmware(fw);
1727 return err;
1728 }
1729
1730 disable_patch = 1;
1731
1732 /* The firmware data file consists of list of Intel specific HCI
1733 * commands and its expected events. The first byte indicates the
1734 * type of the message, either HCI command or HCI event.
1735 *
1736 * It reads the command and its expected event from the firmware file,
1737 * and send to the controller. Once __hci_cmd_sync_ev() returns,
1738 * the returned event is compared with the event read from the firmware
1739 * file and it will continue until all the messages are downloaded to
1740 * the controller.
1741 *
1742 * Once the firmware patching is completed successfully,
1743 * the manufacturer mode is disabled with reset and activating the
1744 * downloaded patch.
1745 *
1746 * If the firmware patching fails, the manufacturer mode is
1747 * disabled with reset and deactivating the patch.
1748 *
1749 * If the default patch file is used, no reset is done when disabling
1750 * the manufacturer.
1751 */
1752 while (fw->size > fw_ptr - fw->data) {
1753 int ret;
1754
1755 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1756 &disable_patch);
1757 if (ret < 0)
1758 goto exit_mfg_deactivate;
1759 }
1760
1761 release_firmware(fw);
1762
1763 if (disable_patch)
1764 goto exit_mfg_disable;
1765
1766 /* Patching completed successfully and disable the manufacturer mode
1767 * with reset and activate the downloaded firmware patches.
1768 */
1769 err = btintel_exit_mfg(hdev, true, true);
1770 if (err)
1771 return err;
1772
1773 BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1774 hdev->name);
1775
1776 goto complete;
1777
1778 exit_mfg_disable:
1779 /* Disable the manufacturer mode without reset */
1780 err = btintel_exit_mfg(hdev, false, false);
1781 if (err)
1782 return err;
1783
1784 BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1785
1786 goto complete;
1787
1788 exit_mfg_deactivate:
1789 release_firmware(fw);
1790
1791 /* Patching failed. Disable the manufacturer mode with reset and
1792 * deactivate the downloaded firmware patches.
1793 */
1794 err = btintel_exit_mfg(hdev, true, false);
1795 if (err)
1796 return err;
1797
1798 BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1799 hdev->name);
1800
1801 complete:
1802 /* Set the event mask for Intel specific vendor events. This enables
1803 * a few extra events that are useful during general operation.
1804 */
1805 btintel_set_event_mask_mfg(hdev, false);
1806
1807 btintel_check_bdaddr(hdev);
1808 return 0;
1809 }
1810
1811 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1812 {
1813 struct sk_buff *skb;
1814 struct hci_event_hdr *hdr;
1815 struct hci_ev_cmd_complete *evt;
1816
1817 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1818 if (!skb)
1819 return -ENOMEM;
1820
1821 hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
1822 hdr->evt = HCI_EV_CMD_COMPLETE;
1823 hdr->plen = sizeof(*evt) + 1;
1824
1825 evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
1826 evt->ncmd = 0x01;
1827 evt->opcode = cpu_to_le16(opcode);
1828
1829 *skb_put(skb, 1) = 0x00;
1830
1831 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
1832
1833 return hci_recv_frame(hdev, skb);
1834 }
1835
1836 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1837 int count)
1838 {
1839 /* When the device is in bootloader mode, then it can send
1840 * events via the bulk endpoint. These events are treated the
1841 * same way as the ones received from the interrupt endpoint.
1842 */
1843 if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1844 return btusb_recv_intr(data, buffer, count);
1845
1846 return btusb_recv_bulk(data, buffer, count);
1847 }
1848
1849 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1850 unsigned int len)
1851 {
1852 const struct intel_bootup *evt = ptr;
1853
1854 if (len != sizeof(*evt))
1855 return;
1856
1857 if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1858 smp_mb__after_atomic();
1859 wake_up_bit(&data->flags, BTUSB_BOOTING);
1860 }
1861 }
1862
1863 static void btusb_intel_secure_send_result(struct btusb_data *data,
1864 const void *ptr, unsigned int len)
1865 {
1866 const struct intel_secure_send_result *evt = ptr;
1867
1868 if (len != sizeof(*evt))
1869 return;
1870
1871 if (evt->result)
1872 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1873
1874 if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1875 test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1876 smp_mb__after_atomic();
1877 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1878 }
1879 }
1880
1881 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1882 {
1883 struct btusb_data *data = hci_get_drvdata(hdev);
1884
1885 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1886 struct hci_event_hdr *hdr = (void *)skb->data;
1887
1888 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1889 hdr->plen > 0) {
1890 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1891 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1892
1893 switch (skb->data[2]) {
1894 case 0x02:
1895 /* When switching to the operational firmware
1896 * the device sends a vendor specific event
1897 * indicating that the bootup completed.
1898 */
1899 btusb_intel_bootup(data, ptr, len);
1900 break;
1901 case 0x06:
1902 /* When the firmware loading completes the
1903 * device sends out a vendor specific event
1904 * indicating the result of the firmware
1905 * loading.
1906 */
1907 btusb_intel_secure_send_result(data, ptr, len);
1908 break;
1909 }
1910 }
1911 }
1912
1913 return hci_recv_frame(hdev, skb);
1914 }
1915
1916 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1917 {
1918 struct btusb_data *data = hci_get_drvdata(hdev);
1919 struct urb *urb;
1920
1921 BT_DBG("%s", hdev->name);
1922
1923 switch (hci_skb_pkt_type(skb)) {
1924 case HCI_COMMAND_PKT:
1925 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1926 struct hci_command_hdr *cmd = (void *)skb->data;
1927 __u16 opcode = le16_to_cpu(cmd->opcode);
1928
1929 /* When in bootloader mode and the command 0xfc09
1930 * is received, it needs to be send down the
1931 * bulk endpoint. So allocate a bulk URB instead.
1932 */
1933 if (opcode == 0xfc09)
1934 urb = alloc_bulk_urb(hdev, skb);
1935 else
1936 urb = alloc_ctrl_urb(hdev, skb);
1937
1938 /* When the 0xfc01 command is issued to boot into
1939 * the operational firmware, it will actually not
1940 * send a command complete event. To keep the flow
1941 * control working inject that event here.
1942 */
1943 if (opcode == 0xfc01)
1944 inject_cmd_complete(hdev, opcode);
1945 } else {
1946 urb = alloc_ctrl_urb(hdev, skb);
1947 }
1948 if (IS_ERR(urb))
1949 return PTR_ERR(urb);
1950
1951 hdev->stat.cmd_tx++;
1952 return submit_or_queue_tx_urb(hdev, urb);
1953
1954 case HCI_ACLDATA_PKT:
1955 urb = alloc_bulk_urb(hdev, skb);
1956 if (IS_ERR(urb))
1957 return PTR_ERR(urb);
1958
1959 hdev->stat.acl_tx++;
1960 return submit_or_queue_tx_urb(hdev, urb);
1961
1962 case HCI_SCODATA_PKT:
1963 if (hci_conn_num(hdev, SCO_LINK) < 1)
1964 return -ENODEV;
1965
1966 urb = alloc_isoc_urb(hdev, skb);
1967 if (IS_ERR(urb))
1968 return PTR_ERR(urb);
1969
1970 hdev->stat.sco_tx++;
1971 return submit_tx_urb(hdev, urb);
1972 }
1973
1974 return -EILSEQ;
1975 }
1976
1977 static int btusb_setup_intel_new(struct hci_dev *hdev)
1978 {
1979 static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
1980 0x00, 0x08, 0x04, 0x00 };
1981 struct btusb_data *data = hci_get_drvdata(hdev);
1982 struct sk_buff *skb;
1983 struct intel_version ver;
1984 struct intel_boot_params *params;
1985 const struct firmware *fw;
1986 const u8 *fw_ptr;
1987 u32 frag_len;
1988 char fwname[64];
1989 ktime_t calltime, delta, rettime;
1990 unsigned long long duration;
1991 int err;
1992
1993 BT_DBG("%s", hdev->name);
1994
1995 calltime = ktime_get();
1996
1997 /* Read the Intel version information to determine if the device
1998 * is in bootloader mode or if it already has operational firmware
1999 * loaded.
2000 */
2001 err = btintel_read_version(hdev, &ver);
2002 if (err)
2003 return err;
2004
2005 /* The hardware platform number has a fixed value of 0x37 and
2006 * for now only accept this single value.
2007 */
2008 if (ver.hw_platform != 0x37) {
2009 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
2010 hdev->name, ver.hw_platform);
2011 return -EINVAL;
2012 }
2013
2014 /* At the moment the iBT 3.0 hardware variants 0x0b (LnP/SfP)
2015 * and 0x0c (WsP) are supported by this firmware loading method.
2016 *
2017 * This check has been put in place to ensure correct forward
2018 * compatibility options when newer hardware variants come along.
2019 */
2020 if (ver.hw_variant != 0x0b && ver.hw_variant != 0x0c) {
2021 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
2022 hdev->name, ver.hw_variant);
2023 return -EINVAL;
2024 }
2025
2026 btintel_version_info(hdev, &ver);
2027
2028 /* The firmware variant determines if the device is in bootloader
2029 * mode or is running operational firmware. The value 0x06 identifies
2030 * the bootloader and the value 0x23 identifies the operational
2031 * firmware.
2032 *
2033 * When the operational firmware is already present, then only
2034 * the check for valid Bluetooth device address is needed. This
2035 * determines if the device will be added as configured or
2036 * unconfigured controller.
2037 *
2038 * It is not possible to use the Secure Boot Parameters in this
2039 * case since that command is only available in bootloader mode.
2040 */
2041 if (ver.fw_variant == 0x23) {
2042 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2043 btintel_check_bdaddr(hdev);
2044 return 0;
2045 }
2046
2047 /* If the device is not in bootloader mode, then the only possible
2048 * choice is to return an error and abort the device initialization.
2049 */
2050 if (ver.fw_variant != 0x06) {
2051 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2052 hdev->name, ver.fw_variant);
2053 return -ENODEV;
2054 }
2055
2056 /* Read the secure boot parameters to identify the operating
2057 * details of the bootloader.
2058 */
2059 skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2060 if (IS_ERR(skb)) {
2061 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2062 hdev->name, PTR_ERR(skb));
2063 return PTR_ERR(skb);
2064 }
2065
2066 if (skb->len != sizeof(*params)) {
2067 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2068 kfree_skb(skb);
2069 return -EILSEQ;
2070 }
2071
2072 params = (struct intel_boot_params *)skb->data;
2073
2074 BT_INFO("%s: Device revision is %u", hdev->name,
2075 le16_to_cpu(params->dev_revid));
2076
2077 BT_INFO("%s: Secure boot is %s", hdev->name,
2078 params->secure_boot ? "enabled" : "disabled");
2079
2080 BT_INFO("%s: OTP lock is %s", hdev->name,
2081 params->otp_lock ? "enabled" : "disabled");
2082
2083 BT_INFO("%s: API lock is %s", hdev->name,
2084 params->api_lock ? "enabled" : "disabled");
2085
2086 BT_INFO("%s: Debug lock is %s", hdev->name,
2087 params->debug_lock ? "enabled" : "disabled");
2088
2089 BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2090 params->min_fw_build_nn, params->min_fw_build_cw,
2091 2000 + params->min_fw_build_yy);
2092
2093 /* It is required that every single firmware fragment is acknowledged
2094 * with a command complete event. If the boot parameters indicate
2095 * that this bootloader does not send them, then abort the setup.
2096 */
2097 if (params->limited_cce != 0x00) {
2098 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2099 hdev->name, params->limited_cce);
2100 kfree_skb(skb);
2101 return -EINVAL;
2102 }
2103
2104 /* If the OTP has no valid Bluetooth device address, then there will
2105 * also be no valid address for the operational firmware.
2106 */
2107 if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2108 BT_INFO("%s: No device address configured", hdev->name);
2109 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2110 }
2111
2112 /* With this Intel bootloader only the hardware variant and device
2113 * revision information are used to select the right firmware.
2114 *
2115 * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2116 *
2117 * Currently the supported hardware variants are:
2118 * 11 (0x0b) for iBT3.0 (LnP/SfP)
2119 * 12 (0x0c) for iBT3.5 (WsP)
2120 */
2121 snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.sfi",
2122 le16_to_cpu(ver.hw_variant),
2123 le16_to_cpu(params->dev_revid));
2124
2125 err = request_firmware(&fw, fwname, &hdev->dev);
2126 if (err < 0) {
2127 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2128 hdev->name, err);
2129 kfree_skb(skb);
2130 return err;
2131 }
2132
2133 BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2134
2135 /* Save the DDC file name for later use to apply once the firmware
2136 * downloading is done.
2137 */
2138 snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.ddc",
2139 le16_to_cpu(ver.hw_variant),
2140 le16_to_cpu(params->dev_revid));
2141
2142 kfree_skb(skb);
2143
2144 if (fw->size < 644) {
2145 BT_ERR("%s: Invalid size of firmware file (%zu)",
2146 hdev->name, fw->size);
2147 err = -EBADF;
2148 goto done;
2149 }
2150
2151 set_bit(BTUSB_DOWNLOADING, &data->flags);
2152
2153 /* Start the firmware download transaction with the Init fragment
2154 * represented by the 128 bytes of CSS header.
2155 */
2156 err = btintel_secure_send(hdev, 0x00, 128, fw->data);
2157 if (err < 0) {
2158 BT_ERR("%s: Failed to send firmware header (%d)",
2159 hdev->name, err);
2160 goto done;
2161 }
2162
2163 /* Send the 256 bytes of public key information from the firmware
2164 * as the PKey fragment.
2165 */
2166 err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128);
2167 if (err < 0) {
2168 BT_ERR("%s: Failed to send firmware public key (%d)",
2169 hdev->name, err);
2170 goto done;
2171 }
2172
2173 /* Send the 256 bytes of signature information from the firmware
2174 * as the Sign fragment.
2175 */
2176 err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388);
2177 if (err < 0) {
2178 BT_ERR("%s: Failed to send firmware signature (%d)",
2179 hdev->name, err);
2180 goto done;
2181 }
2182
2183 fw_ptr = fw->data + 644;
2184 frag_len = 0;
2185
2186 while (fw_ptr - fw->data < fw->size) {
2187 struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
2188
2189 frag_len += sizeof(*cmd) + cmd->plen;
2190
2191 /* The parameter length of the secure send command requires
2192 * a 4 byte alignment. It happens so that the firmware file
2193 * contains proper Intel_NOP commands to align the fragments
2194 * as needed.
2195 *
2196 * Send set of commands with 4 byte alignment from the
2197 * firmware data buffer as a single Data fragement.
2198 */
2199 if (!(frag_len % 4)) {
2200 err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr);
2201 if (err < 0) {
2202 BT_ERR("%s: Failed to send firmware data (%d)",
2203 hdev->name, err);
2204 goto done;
2205 }
2206
2207 fw_ptr += frag_len;
2208 frag_len = 0;
2209 }
2210 }
2211
2212 set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2213
2214 BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2215
2216 /* Before switching the device into operational mode and with that
2217 * booting the loaded firmware, wait for the bootloader notification
2218 * that all fragments have been successfully received.
2219 *
2220 * When the event processing receives the notification, then the
2221 * BTUSB_DOWNLOADING flag will be cleared.
2222 *
2223 * The firmware loading should not take longer than 5 seconds
2224 * and thus just timeout if that happens and fail the setup
2225 * of this device.
2226 */
2227 err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2228 TASK_INTERRUPTIBLE,
2229 msecs_to_jiffies(5000));
2230 if (err == -EINTR) {
2231 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2232 goto done;
2233 }
2234
2235 if (err) {
2236 BT_ERR("%s: Firmware loading timeout", hdev->name);
2237 err = -ETIMEDOUT;
2238 goto done;
2239 }
2240
2241 if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2242 BT_ERR("%s: Firmware loading failed", hdev->name);
2243 err = -ENOEXEC;
2244 goto done;
2245 }
2246
2247 rettime = ktime_get();
2248 delta = ktime_sub(rettime, calltime);
2249 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2250
2251 BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2252
2253 done:
2254 release_firmware(fw);
2255
2256 if (err < 0)
2257 return err;
2258
2259 calltime = ktime_get();
2260
2261 set_bit(BTUSB_BOOTING, &data->flags);
2262
2263 skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2264 HCI_INIT_TIMEOUT);
2265 if (IS_ERR(skb))
2266 return PTR_ERR(skb);
2267
2268 kfree_skb(skb);
2269
2270 /* The bootloader will not indicate when the device is ready. This
2271 * is done by the operational firmware sending bootup notification.
2272 *
2273 * Booting into operational firmware should not take longer than
2274 * 1 second. However if that happens, then just fail the setup
2275 * since something went wrong.
2276 */
2277 BT_INFO("%s: Waiting for device to boot", hdev->name);
2278
2279 err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2280 TASK_INTERRUPTIBLE,
2281 msecs_to_jiffies(1000));
2282
2283 if (err == -EINTR) {
2284 BT_ERR("%s: Device boot interrupted", hdev->name);
2285 return -EINTR;
2286 }
2287
2288 if (err) {
2289 BT_ERR("%s: Device boot timeout", hdev->name);
2290 return -ETIMEDOUT;
2291 }
2292
2293 rettime = ktime_get();
2294 delta = ktime_sub(rettime, calltime);
2295 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2296
2297 BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2298
2299 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2300
2301 /* Once the device is running in operational mode, it needs to apply
2302 * the device configuration (DDC) parameters.
2303 *
2304 * The device can work without DDC parameters, so even if it fails
2305 * to load the file, no need to fail the setup.
2306 */
2307 btintel_load_ddc_config(hdev, fwname);
2308
2309 /* Set the event mask for Intel specific vendor events. This enables
2310 * a few extra events that are useful during general operation. It
2311 * does not enable any debugging related events.
2312 *
2313 * The device will function correctly without these events enabled
2314 * and thus no need to fail the setup.
2315 */
2316 btintel_set_event_mask(hdev, false);
2317
2318 return 0;
2319 }
2320
2321 static int btusb_shutdown_intel(struct hci_dev *hdev)
2322 {
2323 struct sk_buff *skb;
2324 long ret;
2325
2326 /* Some platforms have an issue with BT LED when the interface is
2327 * down or BT radio is turned off, which takes 5 seconds to BT LED
2328 * goes off. This command turns off the BT LED immediately.
2329 */
2330 skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2331 if (IS_ERR(skb)) {
2332 ret = PTR_ERR(skb);
2333 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2334 hdev->name, ret);
2335 return ret;
2336 }
2337 kfree_skb(skb);
2338
2339 return 0;
2340 }
2341
2342 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2343 const bdaddr_t *bdaddr)
2344 {
2345 struct sk_buff *skb;
2346 u8 buf[8];
2347 long ret;
2348
2349 buf[0] = 0xfe;
2350 buf[1] = sizeof(bdaddr_t);
2351 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2352
2353 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2354 if (IS_ERR(skb)) {
2355 ret = PTR_ERR(skb);
2356 BT_ERR("%s: changing Marvell device address failed (%ld)",
2357 hdev->name, ret);
2358 return ret;
2359 }
2360 kfree_skb(skb);
2361
2362 return 0;
2363 }
2364
2365 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2366 const bdaddr_t *bdaddr)
2367 {
2368 struct sk_buff *skb;
2369 u8 buf[10];
2370 long ret;
2371
2372 buf[0] = 0x01;
2373 buf[1] = 0x01;
2374 buf[2] = 0x00;
2375 buf[3] = sizeof(bdaddr_t);
2376 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2377
2378 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2379 if (IS_ERR(skb)) {
2380 ret = PTR_ERR(skb);
2381 BT_ERR("%s: Change address command failed (%ld)",
2382 hdev->name, ret);
2383 return ret;
2384 }
2385 kfree_skb(skb);
2386
2387 return 0;
2388 }
2389
2390 #define QCA_DFU_PACKET_LEN 4096
2391
2392 #define QCA_GET_TARGET_VERSION 0x09
2393 #define QCA_CHECK_STATUS 0x05
2394 #define QCA_DFU_DOWNLOAD 0x01
2395
2396 #define QCA_SYSCFG_UPDATED 0x40
2397 #define QCA_PATCH_UPDATED 0x80
2398 #define QCA_DFU_TIMEOUT 3000
2399
2400 struct qca_version {
2401 __le32 rom_version;
2402 __le32 patch_version;
2403 __le32 ram_version;
2404 __le32 ref_clock;
2405 __u8 reserved[4];
2406 } __packed;
2407
2408 struct qca_rampatch_version {
2409 __le16 rom_version;
2410 __le16 patch_version;
2411 } __packed;
2412
2413 struct qca_device_info {
2414 u32 rom_version;
2415 u8 rampatch_hdr; /* length of header in rampatch */
2416 u8 nvm_hdr; /* length of header in NVM */
2417 u8 ver_offset; /* offset of version structure in rampatch */
2418 };
2419
2420 static const struct qca_device_info qca_devices_table[] = {
2421 { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2422 { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2423 { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2424 { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2425 { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2426 { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2427 };
2428
2429 static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request,
2430 void *data, u16 size)
2431 {
2432 struct btusb_data *btdata = hci_get_drvdata(hdev);
2433 struct usb_device *udev = btdata->udev;
2434 int pipe, err;
2435 u8 *buf;
2436
2437 buf = kmalloc(size, GFP_KERNEL);
2438 if (!buf)
2439 return -ENOMEM;
2440
2441 /* Found some of USB hosts have IOT issues with ours so that we should
2442 * not wait until HCI layer is ready.
2443 */
2444 pipe = usb_rcvctrlpipe(udev, 0);
2445 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2446 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2447 if (err < 0) {
2448 BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err);
2449 goto done;
2450 }
2451
2452 memcpy(data, buf, size);
2453
2454 done:
2455 kfree(buf);
2456
2457 return err;
2458 }
2459
2460 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2461 const struct firmware *firmware,
2462 size_t hdr_size)
2463 {
2464 struct btusb_data *btdata = hci_get_drvdata(hdev);
2465 struct usb_device *udev = btdata->udev;
2466 size_t count, size, sent = 0;
2467 int pipe, len, err;
2468 u8 *buf;
2469
2470 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2471 if (!buf)
2472 return -ENOMEM;
2473
2474 count = firmware->size;
2475
2476 size = min_t(size_t, count, hdr_size);
2477 memcpy(buf, firmware->data, size);
2478
2479 /* USB patches should go down to controller through USB path
2480 * because binary format fits to go down through USB channel.
2481 * USB control path is for patching headers and USB bulk is for
2482 * patch body.
2483 */
2484 pipe = usb_sndctrlpipe(udev, 0);
2485 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2486 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2487 if (err < 0) {
2488 BT_ERR("%s: Failed to send headers (%d)", hdev->name, err);
2489 goto done;
2490 }
2491
2492 sent += size;
2493 count -= size;
2494
2495 while (count) {
2496 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2497
2498 memcpy(buf, firmware->data + sent, size);
2499
2500 pipe = usb_sndbulkpipe(udev, 0x02);
2501 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2502 QCA_DFU_TIMEOUT);
2503 if (err < 0) {
2504 BT_ERR("%s: Failed to send body at %zd of %zd (%d)",
2505 hdev->name, sent, firmware->size, err);
2506 break;
2507 }
2508
2509 if (size != len) {
2510 BT_ERR("%s: Failed to get bulk buffer", hdev->name);
2511 err = -EILSEQ;
2512 break;
2513 }
2514
2515 sent += size;
2516 count -= size;
2517 }
2518
2519 done:
2520 kfree(buf);
2521 return err;
2522 }
2523
2524 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2525 struct qca_version *ver,
2526 const struct qca_device_info *info)
2527 {
2528 struct qca_rampatch_version *rver;
2529 const struct firmware *fw;
2530 u32 ver_rom, ver_patch;
2531 u16 rver_rom, rver_patch;
2532 char fwname[64];
2533 int err;
2534
2535 ver_rom = le32_to_cpu(ver->rom_version);
2536 ver_patch = le32_to_cpu(ver->patch_version);
2537
2538 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2539
2540 err = request_firmware(&fw, fwname, &hdev->dev);
2541 if (err) {
2542 BT_ERR("%s: failed to request rampatch file: %s (%d)",
2543 hdev->name, fwname, err);
2544 return err;
2545 }
2546
2547 BT_INFO("%s: using rampatch file: %s", hdev->name, fwname);
2548
2549 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2550 rver_rom = le16_to_cpu(rver->rom_version);
2551 rver_patch = le16_to_cpu(rver->patch_version);
2552
2553 BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x "
2554 "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom,
2555 ver_patch);
2556
2557 if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2558 BT_ERR("%s: rampatch file version did not match with firmware",
2559 hdev->name);
2560 err = -EINVAL;
2561 goto done;
2562 }
2563
2564 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2565
2566 done:
2567 release_firmware(fw);
2568
2569 return err;
2570 }
2571
2572 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2573 struct qca_version *ver,
2574 const struct qca_device_info *info)
2575 {
2576 const struct firmware *fw;
2577 char fwname[64];
2578 int err;
2579
2580 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2581 le32_to_cpu(ver->rom_version));
2582
2583 err = request_firmware(&fw, fwname, &hdev->dev);
2584 if (err) {
2585 BT_ERR("%s: failed to request NVM file: %s (%d)",
2586 hdev->name, fwname, err);
2587 return err;
2588 }
2589
2590 BT_INFO("%s: using NVM file: %s", hdev->name, fwname);
2591
2592 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2593
2594 release_firmware(fw);
2595
2596 return err;
2597 }
2598
2599 static int btusb_setup_qca(struct hci_dev *hdev)
2600 {
2601 const struct qca_device_info *info = NULL;
2602 struct qca_version ver;
2603 u32 ver_rom;
2604 u8 status;
2605 int i, err;
2606
2607 err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver,
2608 sizeof(ver));
2609 if (err < 0)
2610 return err;
2611
2612 ver_rom = le32_to_cpu(ver.rom_version);
2613 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2614 if (ver_rom == qca_devices_table[i].rom_version)
2615 info = &qca_devices_table[i];
2616 }
2617 if (!info) {
2618 BT_ERR("%s: don't support firmware rome 0x%x", hdev->name,
2619 ver_rom);
2620 return -ENODEV;
2621 }
2622
2623 err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status,
2624 sizeof(status));
2625 if (err < 0)
2626 return err;
2627
2628 if (!(status & QCA_PATCH_UPDATED)) {
2629 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2630 if (err < 0)
2631 return err;
2632 }
2633
2634 if (!(status & QCA_SYSCFG_UPDATED)) {
2635 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2636 if (err < 0)
2637 return err;
2638 }
2639
2640 return 0;
2641 }
2642
2643 #ifdef CONFIG_BT_HCIBTUSB_BCM
2644 static inline int __set_diag_interface(struct hci_dev *hdev)
2645 {
2646 struct btusb_data *data = hci_get_drvdata(hdev);
2647 struct usb_interface *intf = data->diag;
2648 int i;
2649
2650 if (!data->diag)
2651 return -ENODEV;
2652
2653 data->diag_tx_ep = NULL;
2654 data->diag_rx_ep = NULL;
2655
2656 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2657 struct usb_endpoint_descriptor *ep_desc;
2658
2659 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2660
2661 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2662 data->diag_tx_ep = ep_desc;
2663 continue;
2664 }
2665
2666 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2667 data->diag_rx_ep = ep_desc;
2668 continue;
2669 }
2670 }
2671
2672 if (!data->diag_tx_ep || !data->diag_rx_ep) {
2673 BT_ERR("%s invalid diagnostic descriptors", hdev->name);
2674 return -ENODEV;
2675 }
2676
2677 return 0;
2678 }
2679
2680 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
2681 {
2682 struct btusb_data *data = hci_get_drvdata(hdev);
2683 struct sk_buff *skb;
2684 struct urb *urb;
2685 unsigned int pipe;
2686
2687 if (!data->diag_tx_ep)
2688 return ERR_PTR(-ENODEV);
2689
2690 urb = usb_alloc_urb(0, GFP_KERNEL);
2691 if (!urb)
2692 return ERR_PTR(-ENOMEM);
2693
2694 skb = bt_skb_alloc(2, GFP_KERNEL);
2695 if (!skb) {
2696 usb_free_urb(urb);
2697 return ERR_PTR(-ENOMEM);
2698 }
2699
2700 *skb_put(skb, 1) = 0xf0;
2701 *skb_put(skb, 1) = enable;
2702
2703 pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
2704
2705 usb_fill_bulk_urb(urb, data->udev, pipe,
2706 skb->data, skb->len, btusb_tx_complete, skb);
2707
2708 skb->dev = (void *)hdev;
2709
2710 return urb;
2711 }
2712
2713 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
2714 {
2715 struct btusb_data *data = hci_get_drvdata(hdev);
2716 struct urb *urb;
2717
2718 if (!data->diag)
2719 return -ENODEV;
2720
2721 if (!test_bit(HCI_RUNNING, &hdev->flags))
2722 return -ENETDOWN;
2723
2724 urb = alloc_diag_urb(hdev, enable);
2725 if (IS_ERR(urb))
2726 return PTR_ERR(urb);
2727
2728 return submit_or_queue_tx_urb(hdev, urb);
2729 }
2730 #endif
2731
2732 static int btusb_probe(struct usb_interface *intf,
2733 const struct usb_device_id *id)
2734 {
2735 struct usb_endpoint_descriptor *ep_desc;
2736 struct btusb_data *data;
2737 struct hci_dev *hdev;
2738 unsigned ifnum_base;
2739 int i, err;
2740
2741 BT_DBG("intf %p id %p", intf, id);
2742
2743 /* interface numbers are hardcoded in the spec */
2744 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
2745 if (!(id->driver_info & BTUSB_IFNUM_2))
2746 return -ENODEV;
2747 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
2748 return -ENODEV;
2749 }
2750
2751 ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
2752
2753 if (!id->driver_info) {
2754 const struct usb_device_id *match;
2755
2756 match = usb_match_id(intf, blacklist_table);
2757 if (match)
2758 id = match;
2759 }
2760
2761 if (id->driver_info == BTUSB_IGNORE)
2762 return -ENODEV;
2763
2764 if (id->driver_info & BTUSB_ATH3012) {
2765 struct usb_device *udev = interface_to_usbdev(intf);
2766
2767 /* Old firmware would otherwise let ath3k driver load
2768 * patch and sysconfig files */
2769 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2770 return -ENODEV;
2771 }
2772
2773 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2774 if (!data)
2775 return -ENOMEM;
2776
2777 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2778 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2779
2780 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2781 data->intr_ep = ep_desc;
2782 continue;
2783 }
2784
2785 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2786 data->bulk_tx_ep = ep_desc;
2787 continue;
2788 }
2789
2790 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2791 data->bulk_rx_ep = ep_desc;
2792 continue;
2793 }
2794 }
2795
2796 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2797 return -ENODEV;
2798
2799 if (id->driver_info & BTUSB_AMP) {
2800 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2801 data->cmdreq = 0x2b;
2802 } else {
2803 data->cmdreq_type = USB_TYPE_CLASS;
2804 data->cmdreq = 0x00;
2805 }
2806
2807 data->udev = interface_to_usbdev(intf);
2808 data->intf = intf;
2809
2810 INIT_WORK(&data->work, btusb_work);
2811 INIT_WORK(&data->waker, btusb_waker);
2812 init_usb_anchor(&data->deferred);
2813 init_usb_anchor(&data->tx_anchor);
2814 spin_lock_init(&data->txlock);
2815
2816 init_usb_anchor(&data->intr_anchor);
2817 init_usb_anchor(&data->bulk_anchor);
2818 init_usb_anchor(&data->isoc_anchor);
2819 init_usb_anchor(&data->diag_anchor);
2820 spin_lock_init(&data->rxlock);
2821
2822 if (id->driver_info & BTUSB_INTEL_NEW) {
2823 data->recv_event = btusb_recv_event_intel;
2824 data->recv_bulk = btusb_recv_bulk_intel;
2825 set_bit(BTUSB_BOOTLOADER, &data->flags);
2826 } else {
2827 data->recv_event = hci_recv_frame;
2828 data->recv_bulk = btusb_recv_bulk;
2829 }
2830
2831 hdev = hci_alloc_dev();
2832 if (!hdev)
2833 return -ENOMEM;
2834
2835 hdev->bus = HCI_USB;
2836 hci_set_drvdata(hdev, data);
2837
2838 if (id->driver_info & BTUSB_AMP)
2839 hdev->dev_type = HCI_AMP;
2840 else
2841 hdev->dev_type = HCI_PRIMARY;
2842
2843 data->hdev = hdev;
2844
2845 SET_HCIDEV_DEV(hdev, &intf->dev);
2846
2847 hdev->open = btusb_open;
2848 hdev->close = btusb_close;
2849 hdev->flush = btusb_flush;
2850 hdev->send = btusb_send_frame;
2851 hdev->notify = btusb_notify;
2852
2853 if (id->driver_info & BTUSB_CW6622)
2854 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2855
2856 if (id->driver_info & BTUSB_BCM2045)
2857 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2858
2859 if (id->driver_info & BTUSB_BCM92035)
2860 hdev->setup = btusb_setup_bcm92035;
2861
2862 #ifdef CONFIG_BT_HCIBTUSB_BCM
2863 if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2864 hdev->manufacturer = 15;
2865 hdev->setup = btbcm_setup_patchram;
2866 hdev->set_diag = btusb_bcm_set_diag;
2867 hdev->set_bdaddr = btbcm_set_bdaddr;
2868
2869 /* Broadcom LM_DIAG Interface numbers are hardcoded */
2870 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
2871 }
2872
2873 if (id->driver_info & BTUSB_BCM_APPLE) {
2874 hdev->manufacturer = 15;
2875 hdev->setup = btbcm_setup_apple;
2876 hdev->set_diag = btusb_bcm_set_diag;
2877
2878 /* Broadcom LM_DIAG Interface numbers are hardcoded */
2879 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
2880 }
2881 #endif
2882
2883 if (id->driver_info & BTUSB_INTEL) {
2884 hdev->manufacturer = 2;
2885 hdev->setup = btusb_setup_intel;
2886 hdev->shutdown = btusb_shutdown_intel;
2887 hdev->set_diag = btintel_set_diag_mfg;
2888 hdev->set_bdaddr = btintel_set_bdaddr;
2889 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2890 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2891 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
2892 }
2893
2894 if (id->driver_info & BTUSB_INTEL_NEW) {
2895 hdev->manufacturer = 2;
2896 hdev->send = btusb_send_frame_intel;
2897 hdev->setup = btusb_setup_intel_new;
2898 hdev->hw_error = btintel_hw_error;
2899 hdev->set_diag = btintel_set_diag;
2900 hdev->set_bdaddr = btintel_set_bdaddr;
2901 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2902 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
2903 }
2904
2905 if (id->driver_info & BTUSB_MARVELL)
2906 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2907
2908 if (id->driver_info & BTUSB_SWAVE) {
2909 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
2910 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
2911 }
2912
2913 if (id->driver_info & BTUSB_INTEL_BOOT) {
2914 hdev->manufacturer = 2;
2915 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2916 }
2917
2918 if (id->driver_info & BTUSB_ATH3012) {
2919 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2920 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2921 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2922 }
2923
2924 if (id->driver_info & BTUSB_QCA_ROME) {
2925 data->setup_on_usb = btusb_setup_qca;
2926 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2927 }
2928
2929 #ifdef CONFIG_BT_HCIBTUSB_RTL
2930 if (id->driver_info & BTUSB_REALTEK) {
2931 hdev->setup = btrtl_setup_realtek;
2932
2933 /* Realtek devices lose their updated firmware over suspend,
2934 * but the USB hub doesn't notice any status change.
2935 * Explicitly request a device reset on resume.
2936 */
2937 set_bit(BTUSB_RESET_RESUME, &data->flags);
2938 }
2939 #endif
2940
2941 if (id->driver_info & BTUSB_AMP) {
2942 /* AMP controllers do not support SCO packets */
2943 data->isoc = NULL;
2944 } else {
2945 /* Interface orders are hardcoded in the specification */
2946 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
2947 }
2948
2949 if (!reset)
2950 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2951
2952 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2953 if (!disable_scofix)
2954 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2955 }
2956
2957 if (id->driver_info & BTUSB_BROKEN_ISOC)
2958 data->isoc = NULL;
2959
2960 if (id->driver_info & BTUSB_DIGIANSWER) {
2961 data->cmdreq_type = USB_TYPE_VENDOR;
2962 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2963 }
2964
2965 if (id->driver_info & BTUSB_CSR) {
2966 struct usb_device *udev = data->udev;
2967 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
2968
2969 /* Old firmware would otherwise execute USB reset */
2970 if (bcdDevice < 0x117)
2971 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2972
2973 /* Fake CSR devices with broken commands */
2974 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
2975 hdev->setup = btusb_setup_csr;
2976
2977 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2978 }
2979
2980 if (id->driver_info & BTUSB_SNIFFER) {
2981 struct usb_device *udev = data->udev;
2982
2983 /* New sniffer firmware has crippled HCI interface */
2984 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
2985 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2986 }
2987
2988 if (id->driver_info & BTUSB_INTEL_BOOT) {
2989 /* A bug in the bootloader causes that interrupt interface is
2990 * only enabled after receiving SetInterface(0, AltSetting=0).
2991 */
2992 err = usb_set_interface(data->udev, 0, 0);
2993 if (err < 0) {
2994 BT_ERR("failed to set interface 0, alt 0 %d", err);
2995 hci_free_dev(hdev);
2996 return err;
2997 }
2998 }
2999
3000 if (data->isoc) {
3001 err = usb_driver_claim_interface(&btusb_driver,
3002 data->isoc, data);
3003 if (err < 0) {
3004 hci_free_dev(hdev);
3005 return err;
3006 }
3007 }
3008
3009 #ifdef CONFIG_BT_HCIBTUSB_BCM
3010 if (data->diag) {
3011 if (!usb_driver_claim_interface(&btusb_driver,
3012 data->diag, data))
3013 __set_diag_interface(hdev);
3014 else
3015 data->diag = NULL;
3016 }
3017 #endif
3018
3019 err = hci_register_dev(hdev);
3020 if (err < 0) {
3021 hci_free_dev(hdev);
3022 return err;
3023 }
3024
3025 usb_set_intfdata(intf, data);
3026
3027 return 0;
3028 }
3029
3030 static void btusb_disconnect(struct usb_interface *intf)
3031 {
3032 struct btusb_data *data = usb_get_intfdata(intf);
3033 struct hci_dev *hdev;
3034
3035 BT_DBG("intf %p", intf);
3036
3037 if (!data)
3038 return;
3039
3040 hdev = data->hdev;
3041 usb_set_intfdata(data->intf, NULL);
3042
3043 if (data->isoc)
3044 usb_set_intfdata(data->isoc, NULL);
3045
3046 if (data->diag)
3047 usb_set_intfdata(data->diag, NULL);
3048
3049 hci_unregister_dev(hdev);
3050
3051 if (intf == data->intf) {
3052 if (data->isoc)
3053 usb_driver_release_interface(&btusb_driver, data->isoc);
3054 if (data->diag)
3055 usb_driver_release_interface(&btusb_driver, data->diag);
3056 } else if (intf == data->isoc) {
3057 if (data->diag)
3058 usb_driver_release_interface(&btusb_driver, data->diag);
3059 usb_driver_release_interface(&btusb_driver, data->intf);
3060 } else if (intf == data->diag) {
3061 usb_driver_release_interface(&btusb_driver, data->intf);
3062 if (data->isoc)
3063 usb_driver_release_interface(&btusb_driver, data->isoc);
3064 }
3065
3066 hci_free_dev(hdev);
3067 }
3068
3069 #ifdef CONFIG_PM
3070 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3071 {
3072 struct btusb_data *data = usb_get_intfdata(intf);
3073
3074 BT_DBG("intf %p", intf);
3075
3076 if (data->suspend_count++)
3077 return 0;
3078
3079 spin_lock_irq(&data->txlock);
3080 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3081 set_bit(BTUSB_SUSPENDING, &data->flags);
3082 spin_unlock_irq(&data->txlock);
3083 } else {
3084 spin_unlock_irq(&data->txlock);
3085 data->suspend_count--;
3086 return -EBUSY;
3087 }
3088
3089 cancel_work_sync(&data->work);
3090
3091 btusb_stop_traffic(data);
3092 usb_kill_anchored_urbs(&data->tx_anchor);
3093
3094 /* Optionally request a device reset on resume, but only when
3095 * wakeups are disabled. If wakeups are enabled we assume the
3096 * device will stay powered up throughout suspend.
3097 */
3098 if (test_bit(BTUSB_RESET_RESUME, &data->flags) &&
3099 !device_may_wakeup(&data->udev->dev))
3100 data->udev->reset_resume = 1;
3101
3102 return 0;
3103 }
3104
3105 static void play_deferred(struct btusb_data *data)
3106 {
3107 struct urb *urb;
3108 int err;
3109
3110 while ((urb = usb_get_from_anchor(&data->deferred))) {
3111 err = usb_submit_urb(urb, GFP_ATOMIC);
3112 if (err < 0)
3113 break;
3114
3115 data->tx_in_flight++;
3116 }
3117 usb_scuttle_anchored_urbs(&data->deferred);
3118 }
3119
3120 static int btusb_resume(struct usb_interface *intf)
3121 {
3122 struct btusb_data *data = usb_get_intfdata(intf);
3123 struct hci_dev *hdev = data->hdev;
3124 int err = 0;
3125
3126 BT_DBG("intf %p", intf);
3127
3128 if (--data->suspend_count)
3129 return 0;
3130
3131 if (!test_bit(HCI_RUNNING, &hdev->flags))
3132 goto done;
3133
3134 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3135 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3136 if (err < 0) {
3137 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3138 goto failed;
3139 }
3140 }
3141
3142 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3143 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3144 if (err < 0) {
3145 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3146 goto failed;
3147 }
3148
3149 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3150 }
3151
3152 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3153 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3154 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3155 else
3156 btusb_submit_isoc_urb(hdev, GFP_NOIO);
3157 }
3158
3159 spin_lock_irq(&data->txlock);
3160 play_deferred(data);
3161 clear_bit(BTUSB_SUSPENDING, &data->flags);
3162 spin_unlock_irq(&data->txlock);
3163 schedule_work(&data->work);
3164
3165 return 0;
3166
3167 failed:
3168 usb_scuttle_anchored_urbs(&data->deferred);
3169 done:
3170 spin_lock_irq(&data->txlock);
3171 clear_bit(BTUSB_SUSPENDING, &data->flags);
3172 spin_unlock_irq(&data->txlock);
3173
3174 return err;
3175 }
3176 #endif
3177
3178 static struct usb_driver btusb_driver = {
3179 .name = "btusb",
3180 .probe = btusb_probe,
3181 .disconnect = btusb_disconnect,
3182 #ifdef CONFIG_PM
3183 .suspend = btusb_suspend,
3184 .resume = btusb_resume,
3185 #endif
3186 .id_table = btusb_table,
3187 .supports_autosuspend = 1,
3188 .disable_hub_initiated_lpm = 1,
3189 };
3190
3191 module_usb_driver(btusb_driver);
3192
3193 module_param(disable_scofix, bool, 0644);
3194 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3195
3196 module_param(force_scofix, bool, 0644);
3197 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3198
3199 module_param(reset, bool, 0644);
3200 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3201
3202 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3203 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3204 MODULE_VERSION(VERSION);
3205 MODULE_LICENSE("GPL");
Linux with added FPC-III support