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
66 static const struct usb_device_id btusb_table[] = {
67 /* Generic Bluetooth USB device */
68 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
69
70 /* Generic Bluetooth AMP device */
71 { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
72
73 /* Generic Bluetooth USB interface */
74 { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
75
76 /* Apple-specific (Broadcom) devices */
77 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
78 .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
79
80 /* MediaTek MT76x0E */
81 { USB_DEVICE(0x0e8d, 0x763f) },
82
83 /* Broadcom SoftSailing reporting vendor specific */
84 { USB_DEVICE(0x0a5c, 0x21e1) },
85
86 /* Apple MacBookPro 7,1 */
87 { USB_DEVICE(0x05ac, 0x8213) },
88
89 /* Apple iMac11,1 */
90 { USB_DEVICE(0x05ac, 0x8215) },
91
92 /* Apple MacBookPro6,2 */
93 { USB_DEVICE(0x05ac, 0x8218) },
94
95 /* Apple MacBookAir3,1, MacBookAir3,2 */
96 { USB_DEVICE(0x05ac, 0x821b) },
97
98 /* Apple MacBookAir4,1 */
99 { USB_DEVICE(0x05ac, 0x821f) },
100
101 /* Apple MacBookPro8,2 */
102 { USB_DEVICE(0x05ac, 0x821a) },
103
104 /* Apple MacMini5,1 */
105 { USB_DEVICE(0x05ac, 0x8281) },
106
107 /* AVM BlueFRITZ! USB v2.0 */
108 { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
109
110 /* Bluetooth Ultraport Module from IBM */
111 { USB_DEVICE(0x04bf, 0x030a) },
112
113 /* ALPS Modules with non-standard id */
114 { USB_DEVICE(0x044e, 0x3001) },
115 { USB_DEVICE(0x044e, 0x3002) },
116
117 /* Ericsson with non-standard id */
118 { USB_DEVICE(0x0bdb, 0x1002) },
119
120 /* Canyon CN-BTU1 with HID interfaces */
121 { USB_DEVICE(0x0c10, 0x0000) },
122
123 /* Broadcom BCM20702A0 */
124 { USB_DEVICE(0x413c, 0x8197) },
125
126 /* Broadcom BCM20702B0 (Dynex/Insignia) */
127 { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
128
129 /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
130 { USB_DEVICE(0x105b, 0xe065), .driver_info = BTUSB_BCM_PATCHRAM },
131
132 /* Foxconn - Hon Hai */
133 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
134 .driver_info = BTUSB_BCM_PATCHRAM },
135
136 /* Lite-On Technology - Broadcom based */
137 { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
138 .driver_info = BTUSB_BCM_PATCHRAM },
139
140 /* Broadcom devices with vendor specific id */
141 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
142 .driver_info = BTUSB_BCM_PATCHRAM },
143
144 /* ASUSTek Computer - Broadcom based */
145 { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
146 .driver_info = BTUSB_BCM_PATCHRAM },
147
148 /* Belkin F8065bf - Broadcom based */
149 { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
150 .driver_info = BTUSB_BCM_PATCHRAM },
151
152 /* IMC Networks - Broadcom based */
153 { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
154 .driver_info = BTUSB_BCM_PATCHRAM },
155
156 /* Toshiba Corp - Broadcom based */
157 { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
158 .driver_info = BTUSB_BCM_PATCHRAM },
159
160 /* Intel Bluetooth USB Bootloader (RAM module) */
161 { USB_DEVICE(0x8087, 0x0a5a),
162 .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
163
164 { } /* Terminating entry */
165 };
166
167 MODULE_DEVICE_TABLE(usb, btusb_table);
168
169 static const struct usb_device_id blacklist_table[] = {
170 /* CSR BlueCore devices */
171 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
172
173 /* Broadcom BCM2033 without firmware */
174 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
175
176 /* Broadcom BCM2045 devices */
177 { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
178
179 /* Atheros 3011 with sflash firmware */
180 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
181 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
182 { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
183 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
184 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
185 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
186 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
187
188 /* Atheros AR9285 Malbec with sflash firmware */
189 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
190
191 /* Atheros 3012 with sflash firmware */
192 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
193 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
194 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
195 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
196 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
197 { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
198 { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
199 { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
200 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
201 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
202 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
203 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
204 { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
205 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
206 { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
207 { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
208 { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
209 { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
210 { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
211 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
212 { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
213 { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
214 { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
215 { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
216 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
217 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
218 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
219 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
220 { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
221 { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
222 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
223 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
224 { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
225 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
226 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
227 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
228 { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
229 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
230 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
231 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
232 { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
233 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
234 { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
235 { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
236 { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
237 { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
238 { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
239
240 /* Atheros AR5BBU12 with sflash firmware */
241 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
242
243 /* Atheros AR5BBU12 with sflash firmware */
244 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
245 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
246
247 /* QCA ROME chipset */
248 { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
249 { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
250 { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
251
252 /* Broadcom BCM2035 */
253 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
254 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
255 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
256
257 /* Broadcom BCM2045 */
258 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
259 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
260
261 /* IBM/Lenovo ThinkPad with Broadcom chip */
262 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
263 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
264
265 /* HP laptop with Broadcom chip */
266 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
267
268 /* Dell laptop with Broadcom chip */
269 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
270
271 /* Dell Wireless 370 and 410 devices */
272 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
273 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
274
275 /* Belkin F8T012 and F8T013 devices */
276 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
277 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
278
279 /* Asus WL-BTD202 device */
280 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
281
282 /* Kensington Bluetooth USB adapter */
283 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
284
285 /* RTX Telecom based adapters with buggy SCO support */
286 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
287 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
288
289 /* CONWISE Technology based adapters with buggy SCO support */
290 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
291
292 /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
293 { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
294
295 /* Digianswer devices */
296 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
297 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
298
299 /* CSR BlueCore Bluetooth Sniffer */
300 { USB_DEVICE(0x0a12, 0x0002),
301 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
302
303 /* Frontline ComProbe Bluetooth Sniffer */
304 { USB_DEVICE(0x16d3, 0x0002),
305 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
306
307 /* Marvell Bluetooth devices */
308 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
309 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
310
311 /* Intel Bluetooth devices */
312 { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
313 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
314 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
315 { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
316
317 /* Other Intel Bluetooth devices */
318 { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
319 .driver_info = BTUSB_IGNORE },
320
321 /* Realtek Bluetooth devices */
322 { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
323 .driver_info = BTUSB_REALTEK },
324
325 /* Additional Realtek 8723AE Bluetooth devices */
326 { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
327 { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
328
329 /* Additional Realtek 8723BE Bluetooth devices */
330 { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
331 { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
332 { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
333 { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
334 { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
335
336 /* Additional Realtek 8821AE Bluetooth devices */
337 { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
338 { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
339 { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
340 { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
341 { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
342
343 /* Silicon Wave based devices */
344 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
345
346 { } /* Terminating entry */
347 };
348
349 #define BTUSB_MAX_ISOC_FRAMES 10
350
351 #define BTUSB_INTR_RUNNING 0
352 #define BTUSB_BULK_RUNNING 1
353 #define BTUSB_ISOC_RUNNING 2
354 #define BTUSB_SUSPENDING 3
355 #define BTUSB_DID_ISO_RESUME 4
356 #define BTUSB_BOOTLOADER 5
357 #define BTUSB_DOWNLOADING 6
358 #define BTUSB_FIRMWARE_LOADED 7
359 #define BTUSB_FIRMWARE_FAILED 8
360 #define BTUSB_BOOTING 9
361 #define BTUSB_RESET_RESUME 10
362 #define BTUSB_DIAG_RUNNING 11
363
364 struct btusb_data {
365 struct hci_dev *hdev;
366 struct usb_device *udev;
367 struct usb_interface *intf;
368 struct usb_interface *isoc;
369 struct usb_interface *diag;
370
371 unsigned long flags;
372
373 struct work_struct work;
374 struct work_struct waker;
375
376 struct usb_anchor deferred;
377 struct usb_anchor tx_anchor;
378 int tx_in_flight;
379 spinlock_t txlock;
380
381 struct usb_anchor intr_anchor;
382 struct usb_anchor bulk_anchor;
383 struct usb_anchor isoc_anchor;
384 struct usb_anchor diag_anchor;
385 spinlock_t rxlock;
386
387 struct sk_buff *evt_skb;
388 struct sk_buff *acl_skb;
389 struct sk_buff *sco_skb;
390
391 struct usb_endpoint_descriptor *intr_ep;
392 struct usb_endpoint_descriptor *bulk_tx_ep;
393 struct usb_endpoint_descriptor *bulk_rx_ep;
394 struct usb_endpoint_descriptor *isoc_tx_ep;
395 struct usb_endpoint_descriptor *isoc_rx_ep;
396 struct usb_endpoint_descriptor *diag_tx_ep;
397 struct usb_endpoint_descriptor *diag_rx_ep;
398
399 __u8 cmdreq_type;
400 __u8 cmdreq;
401
402 unsigned int sco_num;
403 int isoc_altsetting;
404 int suspend_count;
405
406 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
407 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
408
409 int (*setup_on_usb)(struct hci_dev *hdev);
410 };
411
btusb_free_frags(struct btusb_data * data)412 static inline void btusb_free_frags(struct btusb_data *data)
413 {
414 unsigned long flags;
415
416 spin_lock_irqsave(&data->rxlock, flags);
417
418 kfree_skb(data->evt_skb);
419 data->evt_skb = NULL;
420
421 kfree_skb(data->acl_skb);
422 data->acl_skb = NULL;
423
424 kfree_skb(data->sco_skb);
425 data->sco_skb = NULL;
426
427 spin_unlock_irqrestore(&data->rxlock, flags);
428 }
429
btusb_recv_intr(struct btusb_data * data,void * buffer,int count)430 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
431 {
432 struct sk_buff *skb;
433 int err = 0;
434
435 spin_lock(&data->rxlock);
436 skb = data->evt_skb;
437
438 while (count) {
439 int len;
440
441 if (!skb) {
442 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
443 if (!skb) {
444 err = -ENOMEM;
445 break;
446 }
447
448 bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
449 bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
450 }
451
452 len = min_t(uint, bt_cb(skb)->expect, count);
453 memcpy(skb_put(skb, len), buffer, len);
454
455 count -= len;
456 buffer += len;
457 bt_cb(skb)->expect -= len;
458
459 if (skb->len == HCI_EVENT_HDR_SIZE) {
460 /* Complete event header */
461 bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
462
463 if (skb_tailroom(skb) < bt_cb(skb)->expect) {
464 kfree_skb(skb);
465 skb = NULL;
466
467 err = -EILSEQ;
468 break;
469 }
470 }
471
472 if (bt_cb(skb)->expect == 0) {
473 /* Complete frame */
474 data->recv_event(data->hdev, skb);
475 skb = NULL;
476 }
477 }
478
479 data->evt_skb = skb;
480 spin_unlock(&data->rxlock);
481
482 return err;
483 }
484
btusb_recv_bulk(struct btusb_data * data,void * buffer,int count)485 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
486 {
487 struct sk_buff *skb;
488 int err = 0;
489
490 spin_lock(&data->rxlock);
491 skb = data->acl_skb;
492
493 while (count) {
494 int len;
495
496 if (!skb) {
497 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
498 if (!skb) {
499 err = -ENOMEM;
500 break;
501 }
502
503 bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
504 bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
505 }
506
507 len = min_t(uint, bt_cb(skb)->expect, count);
508 memcpy(skb_put(skb, len), buffer, len);
509
510 count -= len;
511 buffer += len;
512 bt_cb(skb)->expect -= len;
513
514 if (skb->len == HCI_ACL_HDR_SIZE) {
515 __le16 dlen = hci_acl_hdr(skb)->dlen;
516
517 /* Complete ACL header */
518 bt_cb(skb)->expect = __le16_to_cpu(dlen);
519
520 if (skb_tailroom(skb) < bt_cb(skb)->expect) {
521 kfree_skb(skb);
522 skb = NULL;
523
524 err = -EILSEQ;
525 break;
526 }
527 }
528
529 if (bt_cb(skb)->expect == 0) {
530 /* Complete frame */
531 hci_recv_frame(data->hdev, skb);
532 skb = NULL;
533 }
534 }
535
536 data->acl_skb = skb;
537 spin_unlock(&data->rxlock);
538
539 return err;
540 }
541
btusb_recv_isoc(struct btusb_data * data,void * buffer,int count)542 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
543 {
544 struct sk_buff *skb;
545 int err = 0;
546
547 spin_lock(&data->rxlock);
548 skb = data->sco_skb;
549
550 while (count) {
551 int len;
552
553 if (!skb) {
554 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
555 if (!skb) {
556 err = -ENOMEM;
557 break;
558 }
559
560 bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
561 bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
562 }
563
564 len = min_t(uint, bt_cb(skb)->expect, count);
565 memcpy(skb_put(skb, len), buffer, len);
566
567 count -= len;
568 buffer += len;
569 bt_cb(skb)->expect -= len;
570
571 if (skb->len == HCI_SCO_HDR_SIZE) {
572 /* Complete SCO header */
573 bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
574
575 if (skb_tailroom(skb) < bt_cb(skb)->expect) {
576 kfree_skb(skb);
577 skb = NULL;
578
579 err = -EILSEQ;
580 break;
581 }
582 }
583
584 if (bt_cb(skb)->expect == 0) {
585 /* Complete frame */
586 hci_recv_frame(data->hdev, skb);
587 skb = NULL;
588 }
589 }
590
591 data->sco_skb = skb;
592 spin_unlock(&data->rxlock);
593
594 return err;
595 }
596
btusb_intr_complete(struct urb * urb)597 static void btusb_intr_complete(struct urb *urb)
598 {
599 struct hci_dev *hdev = urb->context;
600 struct btusb_data *data = hci_get_drvdata(hdev);
601 int err;
602
603 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
604 urb->actual_length);
605
606 if (!test_bit(HCI_RUNNING, &hdev->flags))
607 return;
608
609 if (urb->status == 0) {
610 hdev->stat.byte_rx += urb->actual_length;
611
612 if (btusb_recv_intr(data, urb->transfer_buffer,
613 urb->actual_length) < 0) {
614 BT_ERR("%s corrupted event packet", hdev->name);
615 hdev->stat.err_rx++;
616 }
617 } else if (urb->status == -ENOENT) {
618 /* Avoid suspend failed when usb_kill_urb */
619 return;
620 }
621
622 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
623 return;
624
625 usb_mark_last_busy(data->udev);
626 usb_anchor_urb(urb, &data->intr_anchor);
627
628 err = usb_submit_urb(urb, GFP_ATOMIC);
629 if (err < 0) {
630 /* -EPERM: urb is being killed;
631 * -ENODEV: device got disconnected */
632 if (err != -EPERM && err != -ENODEV)
633 BT_ERR("%s urb %p failed to resubmit (%d)",
634 hdev->name, urb, -err);
635 usb_unanchor_urb(urb);
636 }
637 }
638
btusb_submit_intr_urb(struct hci_dev * hdev,gfp_t mem_flags)639 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
640 {
641 struct btusb_data *data = hci_get_drvdata(hdev);
642 struct urb *urb;
643 unsigned char *buf;
644 unsigned int pipe;
645 int err, size;
646
647 BT_DBG("%s", hdev->name);
648
649 if (!data->intr_ep)
650 return -ENODEV;
651
652 urb = usb_alloc_urb(0, mem_flags);
653 if (!urb)
654 return -ENOMEM;
655
656 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
657
658 buf = kmalloc(size, mem_flags);
659 if (!buf) {
660 usb_free_urb(urb);
661 return -ENOMEM;
662 }
663
664 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
665
666 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
667 btusb_intr_complete, hdev, data->intr_ep->bInterval);
668
669 urb->transfer_flags |= URB_FREE_BUFFER;
670
671 usb_anchor_urb(urb, &data->intr_anchor);
672
673 err = usb_submit_urb(urb, mem_flags);
674 if (err < 0) {
675 if (err != -EPERM && err != -ENODEV)
676 BT_ERR("%s urb %p submission failed (%d)",
677 hdev->name, urb, -err);
678 usb_unanchor_urb(urb);
679 }
680
681 usb_free_urb(urb);
682
683 return err;
684 }
685
btusb_bulk_complete(struct urb * urb)686 static void btusb_bulk_complete(struct urb *urb)
687 {
688 struct hci_dev *hdev = urb->context;
689 struct btusb_data *data = hci_get_drvdata(hdev);
690 int err;
691
692 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
693 urb->actual_length);
694
695 if (!test_bit(HCI_RUNNING, &hdev->flags))
696 return;
697
698 if (urb->status == 0) {
699 hdev->stat.byte_rx += urb->actual_length;
700
701 if (data->recv_bulk(data, urb->transfer_buffer,
702 urb->actual_length) < 0) {
703 BT_ERR("%s corrupted ACL packet", hdev->name);
704 hdev->stat.err_rx++;
705 }
706 } else if (urb->status == -ENOENT) {
707 /* Avoid suspend failed when usb_kill_urb */
708 return;
709 }
710
711 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
712 return;
713
714 usb_anchor_urb(urb, &data->bulk_anchor);
715 usb_mark_last_busy(data->udev);
716
717 err = usb_submit_urb(urb, GFP_ATOMIC);
718 if (err < 0) {
719 /* -EPERM: urb is being killed;
720 * -ENODEV: device got disconnected */
721 if (err != -EPERM && err != -ENODEV)
722 BT_ERR("%s urb %p failed to resubmit (%d)",
723 hdev->name, urb, -err);
724 usb_unanchor_urb(urb);
725 }
726 }
727
btusb_submit_bulk_urb(struct hci_dev * hdev,gfp_t mem_flags)728 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
729 {
730 struct btusb_data *data = hci_get_drvdata(hdev);
731 struct urb *urb;
732 unsigned char *buf;
733 unsigned int pipe;
734 int err, size = HCI_MAX_FRAME_SIZE;
735
736 BT_DBG("%s", hdev->name);
737
738 if (!data->bulk_rx_ep)
739 return -ENODEV;
740
741 urb = usb_alloc_urb(0, mem_flags);
742 if (!urb)
743 return -ENOMEM;
744
745 buf = kmalloc(size, mem_flags);
746 if (!buf) {
747 usb_free_urb(urb);
748 return -ENOMEM;
749 }
750
751 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
752
753 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
754 btusb_bulk_complete, hdev);
755
756 urb->transfer_flags |= URB_FREE_BUFFER;
757
758 usb_mark_last_busy(data->udev);
759 usb_anchor_urb(urb, &data->bulk_anchor);
760
761 err = usb_submit_urb(urb, mem_flags);
762 if (err < 0) {
763 if (err != -EPERM && err != -ENODEV)
764 BT_ERR("%s urb %p submission failed (%d)",
765 hdev->name, urb, -err);
766 usb_unanchor_urb(urb);
767 }
768
769 usb_free_urb(urb);
770
771 return err;
772 }
773
btusb_isoc_complete(struct urb * urb)774 static void btusb_isoc_complete(struct urb *urb)
775 {
776 struct hci_dev *hdev = urb->context;
777 struct btusb_data *data = hci_get_drvdata(hdev);
778 int i, err;
779
780 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
781 urb->actual_length);
782
783 if (!test_bit(HCI_RUNNING, &hdev->flags))
784 return;
785
786 if (urb->status == 0) {
787 for (i = 0; i < urb->number_of_packets; i++) {
788 unsigned int offset = urb->iso_frame_desc[i].offset;
789 unsigned int length = urb->iso_frame_desc[i].actual_length;
790
791 if (urb->iso_frame_desc[i].status)
792 continue;
793
794 hdev->stat.byte_rx += length;
795
796 if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
797 length) < 0) {
798 BT_ERR("%s corrupted SCO packet", hdev->name);
799 hdev->stat.err_rx++;
800 }
801 }
802 } else if (urb->status == -ENOENT) {
803 /* Avoid suspend failed when usb_kill_urb */
804 return;
805 }
806
807 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
808 return;
809
810 usb_anchor_urb(urb, &data->isoc_anchor);
811
812 err = usb_submit_urb(urb, GFP_ATOMIC);
813 if (err < 0) {
814 /* -EPERM: urb is being killed;
815 * -ENODEV: device got disconnected */
816 if (err != -EPERM && err != -ENODEV)
817 BT_ERR("%s urb %p failed to resubmit (%d)",
818 hdev->name, urb, -err);
819 usb_unanchor_urb(urb);
820 }
821 }
822
__fill_isoc_descriptor(struct urb * urb,int len,int mtu)823 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
824 {
825 int i, offset = 0;
826
827 BT_DBG("len %d mtu %d", len, mtu);
828
829 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
830 i++, offset += mtu, len -= mtu) {
831 urb->iso_frame_desc[i].offset = offset;
832 urb->iso_frame_desc[i].length = mtu;
833 }
834
835 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
836 urb->iso_frame_desc[i].offset = offset;
837 urb->iso_frame_desc[i].length = len;
838 i++;
839 }
840
841 urb->number_of_packets = i;
842 }
843
btusb_submit_isoc_urb(struct hci_dev * hdev,gfp_t mem_flags)844 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
845 {
846 struct btusb_data *data = hci_get_drvdata(hdev);
847 struct urb *urb;
848 unsigned char *buf;
849 unsigned int pipe;
850 int err, size;
851
852 BT_DBG("%s", hdev->name);
853
854 if (!data->isoc_rx_ep)
855 return -ENODEV;
856
857 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
858 if (!urb)
859 return -ENOMEM;
860
861 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
862 BTUSB_MAX_ISOC_FRAMES;
863
864 buf = kmalloc(size, mem_flags);
865 if (!buf) {
866 usb_free_urb(urb);
867 return -ENOMEM;
868 }
869
870 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
871
872 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
873 hdev, data->isoc_rx_ep->bInterval);
874
875 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
876
877 __fill_isoc_descriptor(urb, size,
878 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
879
880 usb_anchor_urb(urb, &data->isoc_anchor);
881
882 err = usb_submit_urb(urb, mem_flags);
883 if (err < 0) {
884 if (err != -EPERM && err != -ENODEV)
885 BT_ERR("%s urb %p submission failed (%d)",
886 hdev->name, urb, -err);
887 usb_unanchor_urb(urb);
888 }
889
890 usb_free_urb(urb);
891
892 return err;
893 }
894
btusb_diag_complete(struct urb * urb)895 static void btusb_diag_complete(struct urb *urb)
896 {
897 struct hci_dev *hdev = urb->context;
898 struct btusb_data *data = hci_get_drvdata(hdev);
899 int err;
900
901 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
902 urb->actual_length);
903
904 if (urb->status == 0) {
905 struct sk_buff *skb;
906
907 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
908 if (skb) {
909 memcpy(skb_put(skb, urb->actual_length),
910 urb->transfer_buffer, urb->actual_length);
911 hci_recv_diag(hdev, skb);
912 }
913 } else if (urb->status == -ENOENT) {
914 /* Avoid suspend failed when usb_kill_urb */
915 return;
916 }
917
918 if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
919 return;
920
921 usb_anchor_urb(urb, &data->diag_anchor);
922 usb_mark_last_busy(data->udev);
923
924 err = usb_submit_urb(urb, GFP_ATOMIC);
925 if (err < 0) {
926 /* -EPERM: urb is being killed;
927 * -ENODEV: device got disconnected */
928 if (err != -EPERM && err != -ENODEV)
929 BT_ERR("%s urb %p failed to resubmit (%d)",
930 hdev->name, urb, -err);
931 usb_unanchor_urb(urb);
932 }
933 }
934
btusb_submit_diag_urb(struct hci_dev * hdev,gfp_t mem_flags)935 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
936 {
937 struct btusb_data *data = hci_get_drvdata(hdev);
938 struct urb *urb;
939 unsigned char *buf;
940 unsigned int pipe;
941 int err, size = HCI_MAX_FRAME_SIZE;
942
943 BT_DBG("%s", hdev->name);
944
945 if (!data->diag_rx_ep)
946 return -ENODEV;
947
948 urb = usb_alloc_urb(0, mem_flags);
949 if (!urb)
950 return -ENOMEM;
951
952 buf = kmalloc(size, mem_flags);
953 if (!buf) {
954 usb_free_urb(urb);
955 return -ENOMEM;
956 }
957
958 pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
959
960 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
961 btusb_diag_complete, hdev);
962
963 urb->transfer_flags |= URB_FREE_BUFFER;
964
965 usb_mark_last_busy(data->udev);
966 usb_anchor_urb(urb, &data->diag_anchor);
967
968 err = usb_submit_urb(urb, mem_flags);
969 if (err < 0) {
970 if (err != -EPERM && err != -ENODEV)
971 BT_ERR("%s urb %p submission failed (%d)",
972 hdev->name, urb, -err);
973 usb_unanchor_urb(urb);
974 }
975
976 usb_free_urb(urb);
977
978 return err;
979 }
980
btusb_tx_complete(struct urb * urb)981 static void btusb_tx_complete(struct urb *urb)
982 {
983 struct sk_buff *skb = urb->context;
984 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
985 struct btusb_data *data = hci_get_drvdata(hdev);
986
987 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
988 urb->actual_length);
989
990 if (!test_bit(HCI_RUNNING, &hdev->flags))
991 goto done;
992
993 if (!urb->status)
994 hdev->stat.byte_tx += urb->transfer_buffer_length;
995 else
996 hdev->stat.err_tx++;
997
998 done:
999 spin_lock(&data->txlock);
1000 data->tx_in_flight--;
1001 spin_unlock(&data->txlock);
1002
1003 kfree(urb->setup_packet);
1004
1005 kfree_skb(skb);
1006 }
1007
btusb_isoc_tx_complete(struct urb * urb)1008 static void btusb_isoc_tx_complete(struct urb *urb)
1009 {
1010 struct sk_buff *skb = urb->context;
1011 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1012
1013 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1014 urb->actual_length);
1015
1016 if (!test_bit(HCI_RUNNING, &hdev->flags))
1017 goto done;
1018
1019 if (!urb->status)
1020 hdev->stat.byte_tx += urb->transfer_buffer_length;
1021 else
1022 hdev->stat.err_tx++;
1023
1024 done:
1025 kfree(urb->setup_packet);
1026
1027 kfree_skb(skb);
1028 }
1029
btusb_open(struct hci_dev * hdev)1030 static int btusb_open(struct hci_dev *hdev)
1031 {
1032 struct btusb_data *data = hci_get_drvdata(hdev);
1033 int err;
1034
1035 BT_DBG("%s", hdev->name);
1036
1037 /* Patching USB firmware files prior to starting any URBs of HCI path
1038 * It is more safe to use USB bulk channel for downloading USB patch
1039 */
1040 if (data->setup_on_usb) {
1041 err = data->setup_on_usb(hdev);
1042 if (err < 0)
1043 return err;
1044 }
1045
1046 err = usb_autopm_get_interface(data->intf);
1047 if (err < 0)
1048 return err;
1049
1050 data->intf->needs_remote_wakeup = 1;
1051
1052 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1053 goto done;
1054
1055 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1056 if (err < 0)
1057 goto failed;
1058
1059 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1060 if (err < 0) {
1061 usb_kill_anchored_urbs(&data->intr_anchor);
1062 goto failed;
1063 }
1064
1065 set_bit(BTUSB_BULK_RUNNING, &data->flags);
1066 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1067
1068 if (data->diag) {
1069 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1070 set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1071 }
1072
1073 done:
1074 usb_autopm_put_interface(data->intf);
1075 return 0;
1076
1077 failed:
1078 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1079 usb_autopm_put_interface(data->intf);
1080 return err;
1081 }
1082
btusb_stop_traffic(struct btusb_data * data)1083 static void btusb_stop_traffic(struct btusb_data *data)
1084 {
1085 usb_kill_anchored_urbs(&data->intr_anchor);
1086 usb_kill_anchored_urbs(&data->bulk_anchor);
1087 usb_kill_anchored_urbs(&data->isoc_anchor);
1088 usb_kill_anchored_urbs(&data->diag_anchor);
1089 }
1090
btusb_close(struct hci_dev * hdev)1091 static int btusb_close(struct hci_dev *hdev)
1092 {
1093 struct btusb_data *data = hci_get_drvdata(hdev);
1094 int err;
1095
1096 BT_DBG("%s", hdev->name);
1097
1098 cancel_work_sync(&data->work);
1099 cancel_work_sync(&data->waker);
1100
1101 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1102 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1103 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1104 clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1105
1106 btusb_stop_traffic(data);
1107 btusb_free_frags(data);
1108
1109 err = usb_autopm_get_interface(data->intf);
1110 if (err < 0)
1111 goto failed;
1112
1113 data->intf->needs_remote_wakeup = 0;
1114 usb_autopm_put_interface(data->intf);
1115
1116 failed:
1117 usb_scuttle_anchored_urbs(&data->deferred);
1118 return 0;
1119 }
1120
btusb_flush(struct hci_dev * hdev)1121 static int btusb_flush(struct hci_dev *hdev)
1122 {
1123 struct btusb_data *data = hci_get_drvdata(hdev);
1124
1125 BT_DBG("%s", hdev->name);
1126
1127 usb_kill_anchored_urbs(&data->tx_anchor);
1128 btusb_free_frags(data);
1129
1130 return 0;
1131 }
1132
alloc_ctrl_urb(struct hci_dev * hdev,struct sk_buff * skb)1133 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1134 {
1135 struct btusb_data *data = hci_get_drvdata(hdev);
1136 struct usb_ctrlrequest *dr;
1137 struct urb *urb;
1138 unsigned int pipe;
1139
1140 urb = usb_alloc_urb(0, GFP_KERNEL);
1141 if (!urb)
1142 return ERR_PTR(-ENOMEM);
1143
1144 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1145 if (!dr) {
1146 usb_free_urb(urb);
1147 return ERR_PTR(-ENOMEM);
1148 }
1149
1150 dr->bRequestType = data->cmdreq_type;
1151 dr->bRequest = data->cmdreq;
1152 dr->wIndex = 0;
1153 dr->wValue = 0;
1154 dr->wLength = __cpu_to_le16(skb->len);
1155
1156 pipe = usb_sndctrlpipe(data->udev, 0x00);
1157
1158 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1159 skb->data, skb->len, btusb_tx_complete, skb);
1160
1161 skb->dev = (void *)hdev;
1162
1163 return urb;
1164 }
1165
alloc_bulk_urb(struct hci_dev * hdev,struct sk_buff * skb)1166 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1167 {
1168 struct btusb_data *data = hci_get_drvdata(hdev);
1169 struct urb *urb;
1170 unsigned int pipe;
1171
1172 if (!data->bulk_tx_ep)
1173 return ERR_PTR(-ENODEV);
1174
1175 urb = usb_alloc_urb(0, GFP_KERNEL);
1176 if (!urb)
1177 return ERR_PTR(-ENOMEM);
1178
1179 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1180
1181 usb_fill_bulk_urb(urb, data->udev, pipe,
1182 skb->data, skb->len, btusb_tx_complete, skb);
1183
1184 skb->dev = (void *)hdev;
1185
1186 return urb;
1187 }
1188
alloc_isoc_urb(struct hci_dev * hdev,struct sk_buff * skb)1189 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1190 {
1191 struct btusb_data *data = hci_get_drvdata(hdev);
1192 struct urb *urb;
1193 unsigned int pipe;
1194
1195 if (!data->isoc_tx_ep)
1196 return ERR_PTR(-ENODEV);
1197
1198 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1199 if (!urb)
1200 return ERR_PTR(-ENOMEM);
1201
1202 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1203
1204 usb_fill_int_urb(urb, data->udev, pipe,
1205 skb->data, skb->len, btusb_isoc_tx_complete,
1206 skb, data->isoc_tx_ep->bInterval);
1207
1208 urb->transfer_flags = URB_ISO_ASAP;
1209
1210 __fill_isoc_descriptor(urb, skb->len,
1211 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1212
1213 skb->dev = (void *)hdev;
1214
1215 return urb;
1216 }
1217
submit_tx_urb(struct hci_dev * hdev,struct urb * urb)1218 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1219 {
1220 struct btusb_data *data = hci_get_drvdata(hdev);
1221 int err;
1222
1223 usb_anchor_urb(urb, &data->tx_anchor);
1224
1225 err = usb_submit_urb(urb, GFP_KERNEL);
1226 if (err < 0) {
1227 if (err != -EPERM && err != -ENODEV)
1228 BT_ERR("%s urb %p submission failed (%d)",
1229 hdev->name, urb, -err);
1230 kfree(urb->setup_packet);
1231 usb_unanchor_urb(urb);
1232 } else {
1233 usb_mark_last_busy(data->udev);
1234 }
1235
1236 usb_free_urb(urb);
1237 return err;
1238 }
1239
submit_or_queue_tx_urb(struct hci_dev * hdev,struct urb * urb)1240 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1241 {
1242 struct btusb_data *data = hci_get_drvdata(hdev);
1243 unsigned long flags;
1244 bool suspending;
1245
1246 spin_lock_irqsave(&data->txlock, flags);
1247 suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1248 if (!suspending)
1249 data->tx_in_flight++;
1250 spin_unlock_irqrestore(&data->txlock, flags);
1251
1252 if (!suspending)
1253 return submit_tx_urb(hdev, urb);
1254
1255 usb_anchor_urb(urb, &data->deferred);
1256 schedule_work(&data->waker);
1257
1258 usb_free_urb(urb);
1259 return 0;
1260 }
1261
btusb_send_frame(struct hci_dev * hdev,struct sk_buff * skb)1262 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1263 {
1264 struct urb *urb;
1265
1266 BT_DBG("%s", hdev->name);
1267
1268 switch (bt_cb(skb)->pkt_type) {
1269 case HCI_COMMAND_PKT:
1270 urb = alloc_ctrl_urb(hdev, skb);
1271 if (IS_ERR(urb))
1272 return PTR_ERR(urb);
1273
1274 hdev->stat.cmd_tx++;
1275 return submit_or_queue_tx_urb(hdev, urb);
1276
1277 case HCI_ACLDATA_PKT:
1278 urb = alloc_bulk_urb(hdev, skb);
1279 if (IS_ERR(urb))
1280 return PTR_ERR(urb);
1281
1282 hdev->stat.acl_tx++;
1283 return submit_or_queue_tx_urb(hdev, urb);
1284
1285 case HCI_SCODATA_PKT:
1286 if (hci_conn_num(hdev, SCO_LINK) < 1)
1287 return -ENODEV;
1288
1289 urb = alloc_isoc_urb(hdev, skb);
1290 if (IS_ERR(urb))
1291 return PTR_ERR(urb);
1292
1293 hdev->stat.sco_tx++;
1294 return submit_tx_urb(hdev, urb);
1295 }
1296
1297 return -EILSEQ;
1298 }
1299
btusb_notify(struct hci_dev * hdev,unsigned int evt)1300 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1301 {
1302 struct btusb_data *data = hci_get_drvdata(hdev);
1303
1304 BT_DBG("%s evt %d", hdev->name, evt);
1305
1306 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1307 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1308 schedule_work(&data->work);
1309 }
1310 }
1311
__set_isoc_interface(struct hci_dev * hdev,int altsetting)1312 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1313 {
1314 struct btusb_data *data = hci_get_drvdata(hdev);
1315 struct usb_interface *intf = data->isoc;
1316 struct usb_endpoint_descriptor *ep_desc;
1317 int i, err;
1318
1319 if (!data->isoc)
1320 return -ENODEV;
1321
1322 err = usb_set_interface(data->udev, 1, altsetting);
1323 if (err < 0) {
1324 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1325 return err;
1326 }
1327
1328 data->isoc_altsetting = altsetting;
1329
1330 data->isoc_tx_ep = NULL;
1331 data->isoc_rx_ep = NULL;
1332
1333 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1334 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1335
1336 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1337 data->isoc_tx_ep = ep_desc;
1338 continue;
1339 }
1340
1341 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1342 data->isoc_rx_ep = ep_desc;
1343 continue;
1344 }
1345 }
1346
1347 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1348 BT_ERR("%s invalid SCO descriptors", hdev->name);
1349 return -ENODEV;
1350 }
1351
1352 return 0;
1353 }
1354
btusb_work(struct work_struct * work)1355 static void btusb_work(struct work_struct *work)
1356 {
1357 struct btusb_data *data = container_of(work, struct btusb_data, work);
1358 struct hci_dev *hdev = data->hdev;
1359 int new_alts;
1360 int err;
1361
1362 if (data->sco_num > 0) {
1363 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1364 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1365 if (err < 0) {
1366 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1367 usb_kill_anchored_urbs(&data->isoc_anchor);
1368 return;
1369 }
1370
1371 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1372 }
1373
1374 if (hdev->voice_setting & 0x0020) {
1375 static const int alts[3] = { 2, 4, 5 };
1376
1377 new_alts = alts[data->sco_num - 1];
1378 } else {
1379 new_alts = data->sco_num;
1380 }
1381
1382 if (data->isoc_altsetting != new_alts) {
1383 unsigned long flags;
1384
1385 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1386 usb_kill_anchored_urbs(&data->isoc_anchor);
1387
1388 /* When isochronous alternate setting needs to be
1389 * changed, because SCO connection has been added
1390 * or removed, a packet fragment may be left in the
1391 * reassembling state. This could lead to wrongly
1392 * assembled fragments.
1393 *
1394 * Clear outstanding fragment when selecting a new
1395 * alternate setting.
1396 */
1397 spin_lock_irqsave(&data->rxlock, flags);
1398 kfree_skb(data->sco_skb);
1399 data->sco_skb = NULL;
1400 spin_unlock_irqrestore(&data->rxlock, flags);
1401
1402 if (__set_isoc_interface(hdev, new_alts) < 0)
1403 return;
1404 }
1405
1406 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1407 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1408 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1409 else
1410 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1411 }
1412 } else {
1413 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1414 usb_kill_anchored_urbs(&data->isoc_anchor);
1415
1416 __set_isoc_interface(hdev, 0);
1417 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1418 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1419 }
1420 }
1421
btusb_waker(struct work_struct * work)1422 static void btusb_waker(struct work_struct *work)
1423 {
1424 struct btusb_data *data = container_of(work, struct btusb_data, waker);
1425 int err;
1426
1427 err = usb_autopm_get_interface(data->intf);
1428 if (err < 0)
1429 return;
1430
1431 usb_autopm_put_interface(data->intf);
1432 }
1433
btusb_setup_bcm92035(struct hci_dev * hdev)1434 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1435 {
1436 struct sk_buff *skb;
1437 u8 val = 0x00;
1438
1439 BT_DBG("%s", hdev->name);
1440
1441 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1442 if (IS_ERR(skb))
1443 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1444 else
1445 kfree_skb(skb);
1446
1447 return 0;
1448 }
1449
btusb_setup_csr(struct hci_dev * hdev)1450 static int btusb_setup_csr(struct hci_dev *hdev)
1451 {
1452 struct hci_rp_read_local_version *rp;
1453 struct sk_buff *skb;
1454
1455 BT_DBG("%s", hdev->name);
1456
1457 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1458 HCI_INIT_TIMEOUT);
1459 if (IS_ERR(skb)) {
1460 int err = PTR_ERR(skb);
1461 BT_ERR("%s: CSR: Local version failed (%d)", hdev->name, err);
1462 return err;
1463 }
1464
1465 if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1466 BT_ERR("%s: CSR: Local version length mismatch", hdev->name);
1467 kfree_skb(skb);
1468 return -EIO;
1469 }
1470
1471 rp = (struct hci_rp_read_local_version *)skb->data;
1472
1473 /* Detect controllers which aren't real CSR ones. */
1474 if (le16_to_cpu(rp->manufacturer) != 10 ||
1475 le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1476 /* Clear the reset quirk since this is not an actual
1477 * early Bluetooth 1.1 device from CSR.
1478 */
1479 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1480
1481 /* These fake CSR controllers have all a broken
1482 * stored link key handling and so just disable it.
1483 */
1484 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1485 }
1486
1487 kfree_skb(skb);
1488
1489 return 0;
1490 }
1491
btusb_setup_intel_get_fw(struct hci_dev * hdev,struct intel_version * ver)1492 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1493 struct intel_version *ver)
1494 {
1495 const struct firmware *fw;
1496 char fwname[64];
1497 int ret;
1498
1499 snprintf(fwname, sizeof(fwname),
1500 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1501 ver->hw_platform, ver->hw_variant, ver->hw_revision,
1502 ver->fw_variant, ver->fw_revision, ver->fw_build_num,
1503 ver->fw_build_ww, ver->fw_build_yy);
1504
1505 ret = request_firmware(&fw, fwname, &hdev->dev);
1506 if (ret < 0) {
1507 if (ret == -EINVAL) {
1508 BT_ERR("%s Intel firmware file request failed (%d)",
1509 hdev->name, ret);
1510 return NULL;
1511 }
1512
1513 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1514 hdev->name, fwname, ret);
1515
1516 /* If the correct firmware patch file is not found, use the
1517 * default firmware patch file instead
1518 */
1519 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1520 ver->hw_platform, ver->hw_variant);
1521 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1522 BT_ERR("%s failed to open default Intel fw file: %s",
1523 hdev->name, fwname);
1524 return NULL;
1525 }
1526 }
1527
1528 BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1529
1530 return fw;
1531 }
1532
btusb_setup_intel_patching(struct hci_dev * hdev,const struct firmware * fw,const u8 ** fw_ptr,int * disable_patch)1533 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1534 const struct firmware *fw,
1535 const u8 **fw_ptr, int *disable_patch)
1536 {
1537 struct sk_buff *skb;
1538 struct hci_command_hdr *cmd;
1539 const u8 *cmd_param;
1540 struct hci_event_hdr *evt = NULL;
1541 const u8 *evt_param = NULL;
1542 int remain = fw->size - (*fw_ptr - fw->data);
1543
1544 /* The first byte indicates the types of the patch command or event.
1545 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1546 * in the current firmware buffer doesn't start with 0x01 or
1547 * the size of remain buffer is smaller than HCI command header,
1548 * the firmware file is corrupted and it should stop the patching
1549 * process.
1550 */
1551 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1552 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1553 return -EINVAL;
1554 }
1555 (*fw_ptr)++;
1556 remain--;
1557
1558 cmd = (struct hci_command_hdr *)(*fw_ptr);
1559 *fw_ptr += sizeof(*cmd);
1560 remain -= sizeof(*cmd);
1561
1562 /* Ensure that the remain firmware data is long enough than the length
1563 * of command parameter. If not, the firmware file is corrupted.
1564 */
1565 if (remain < cmd->plen) {
1566 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1567 return -EFAULT;
1568 }
1569
1570 /* If there is a command that loads a patch in the firmware
1571 * file, then enable the patch upon success, otherwise just
1572 * disable the manufacturer mode, for example patch activation
1573 * is not required when the default firmware patch file is used
1574 * because there are no patch data to load.
1575 */
1576 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1577 *disable_patch = 0;
1578
1579 cmd_param = *fw_ptr;
1580 *fw_ptr += cmd->plen;
1581 remain -= cmd->plen;
1582
1583 /* This reads the expected events when the above command is sent to the
1584 * device. Some vendor commands expects more than one events, for
1585 * example command status event followed by vendor specific event.
1586 * For this case, it only keeps the last expected event. so the command
1587 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1588 * last expected event.
1589 */
1590 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1591 (*fw_ptr)++;
1592 remain--;
1593
1594 evt = (struct hci_event_hdr *)(*fw_ptr);
1595 *fw_ptr += sizeof(*evt);
1596 remain -= sizeof(*evt);
1597
1598 if (remain < evt->plen) {
1599 BT_ERR("%s Intel fw corrupted: invalid evt len",
1600 hdev->name);
1601 return -EFAULT;
1602 }
1603
1604 evt_param = *fw_ptr;
1605 *fw_ptr += evt->plen;
1606 remain -= evt->plen;
1607 }
1608
1609 /* Every HCI commands in the firmware file has its correspond event.
1610 * If event is not found or remain is smaller than zero, the firmware
1611 * file is corrupted.
1612 */
1613 if (!evt || !evt_param || remain < 0) {
1614 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1615 return -EFAULT;
1616 }
1617
1618 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1619 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1620 if (IS_ERR(skb)) {
1621 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1622 hdev->name, cmd->opcode, PTR_ERR(skb));
1623 return PTR_ERR(skb);
1624 }
1625
1626 /* It ensures that the returned event matches the event data read from
1627 * the firmware file. At fist, it checks the length and then
1628 * the contents of the event.
1629 */
1630 if (skb->len != evt->plen) {
1631 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1632 le16_to_cpu(cmd->opcode));
1633 kfree_skb(skb);
1634 return -EFAULT;
1635 }
1636
1637 if (memcmp(skb->data, evt_param, evt->plen)) {
1638 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1639 hdev->name, le16_to_cpu(cmd->opcode));
1640 kfree_skb(skb);
1641 return -EFAULT;
1642 }
1643 kfree_skb(skb);
1644
1645 return 0;
1646 }
1647
btusb_setup_intel(struct hci_dev * hdev)1648 static int btusb_setup_intel(struct hci_dev *hdev)
1649 {
1650 struct sk_buff *skb;
1651 const struct firmware *fw;
1652 const u8 *fw_ptr;
1653 int disable_patch;
1654 struct intel_version *ver;
1655
1656 const u8 mfg_enable[] = { 0x01, 0x00 };
1657 const u8 mfg_disable[] = { 0x00, 0x00 };
1658 const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1659 const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1660
1661 BT_DBG("%s", hdev->name);
1662
1663 /* The controller has a bug with the first HCI command sent to it
1664 * returning number of completed commands as zero. This would stall the
1665 * command processing in the Bluetooth core.
1666 *
1667 * As a workaround, send HCI Reset command first which will reset the
1668 * number of completed commands and allow normal command processing
1669 * from now on.
1670 */
1671 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1672 if (IS_ERR(skb)) {
1673 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1674 hdev->name, PTR_ERR(skb));
1675 return PTR_ERR(skb);
1676 }
1677 kfree_skb(skb);
1678
1679 /* Read Intel specific controller version first to allow selection of
1680 * which firmware file to load.
1681 *
1682 * The returned information are hardware variant and revision plus
1683 * firmware variant, revision and build number.
1684 */
1685 skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1686 if (IS_ERR(skb)) {
1687 BT_ERR("%s reading Intel fw version command failed (%ld)",
1688 hdev->name, PTR_ERR(skb));
1689 return PTR_ERR(skb);
1690 }
1691
1692 if (skb->len != sizeof(*ver)) {
1693 BT_ERR("%s Intel version event length mismatch", hdev->name);
1694 kfree_skb(skb);
1695 return -EIO;
1696 }
1697
1698 ver = (struct intel_version *)skb->data;
1699
1700 BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1701 hdev->name, ver->hw_platform, ver->hw_variant,
1702 ver->hw_revision, ver->fw_variant, ver->fw_revision,
1703 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1704 ver->fw_patch_num);
1705
1706 /* fw_patch_num indicates the version of patch the device currently
1707 * have. If there is no patch data in the device, it is always 0x00.
1708 * So, if it is other than 0x00, no need to patch the device again.
1709 */
1710 if (ver->fw_patch_num) {
1711 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1712 hdev->name, ver->fw_patch_num);
1713 kfree_skb(skb);
1714 goto complete;
1715 }
1716
1717 /* Opens the firmware patch file based on the firmware version read
1718 * from the controller. If it fails to open the matching firmware
1719 * patch file, it tries to open the default firmware patch file.
1720 * If no patch file is found, allow the device to operate without
1721 * a patch.
1722 */
1723 fw = btusb_setup_intel_get_fw(hdev, ver);
1724 if (!fw) {
1725 kfree_skb(skb);
1726 goto complete;
1727 }
1728 fw_ptr = fw->data;
1729
1730 kfree_skb(skb);
1731
1732 /* This Intel specific command enables the manufacturer mode of the
1733 * controller.
1734 *
1735 * Only while this mode is enabled, the driver can download the
1736 * firmware patch data and configuration parameters.
1737 */
1738 skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1739 if (IS_ERR(skb)) {
1740 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1741 hdev->name, PTR_ERR(skb));
1742 release_firmware(fw);
1743 return PTR_ERR(skb);
1744 }
1745
1746 kfree_skb(skb);
1747
1748 disable_patch = 1;
1749
1750 /* The firmware data file consists of list of Intel specific HCI
1751 * commands and its expected events. The first byte indicates the
1752 * type of the message, either HCI command or HCI event.
1753 *
1754 * It reads the command and its expected event from the firmware file,
1755 * and send to the controller. Once __hci_cmd_sync_ev() returns,
1756 * the returned event is compared with the event read from the firmware
1757 * file and it will continue until all the messages are downloaded to
1758 * the controller.
1759 *
1760 * Once the firmware patching is completed successfully,
1761 * the manufacturer mode is disabled with reset and activating the
1762 * downloaded patch.
1763 *
1764 * If the firmware patching fails, the manufacturer mode is
1765 * disabled with reset and deactivating the patch.
1766 *
1767 * If the default patch file is used, no reset is done when disabling
1768 * the manufacturer.
1769 */
1770 while (fw->size > fw_ptr - fw->data) {
1771 int ret;
1772
1773 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1774 &disable_patch);
1775 if (ret < 0)
1776 goto exit_mfg_deactivate;
1777 }
1778
1779 release_firmware(fw);
1780
1781 if (disable_patch)
1782 goto exit_mfg_disable;
1783
1784 /* Patching completed successfully and disable the manufacturer mode
1785 * with reset and activate the downloaded firmware patches.
1786 */
1787 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1788 mfg_reset_activate, HCI_INIT_TIMEOUT);
1789 if (IS_ERR(skb)) {
1790 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1791 hdev->name, PTR_ERR(skb));
1792 return PTR_ERR(skb);
1793 }
1794 kfree_skb(skb);
1795
1796 BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1797 hdev->name);
1798
1799 goto complete;
1800
1801 exit_mfg_disable:
1802 /* Disable the manufacturer mode without reset */
1803 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1804 HCI_INIT_TIMEOUT);
1805 if (IS_ERR(skb)) {
1806 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1807 hdev->name, PTR_ERR(skb));
1808 return PTR_ERR(skb);
1809 }
1810 kfree_skb(skb);
1811
1812 BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1813
1814 goto complete;
1815
1816 exit_mfg_deactivate:
1817 release_firmware(fw);
1818
1819 /* Patching failed. Disable the manufacturer mode with reset and
1820 * deactivate the downloaded firmware patches.
1821 */
1822 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1823 mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1824 if (IS_ERR(skb)) {
1825 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1826 hdev->name, PTR_ERR(skb));
1827 return PTR_ERR(skb);
1828 }
1829 kfree_skb(skb);
1830
1831 BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1832 hdev->name);
1833
1834 complete:
1835 /* Set the event mask for Intel specific vendor events. This enables
1836 * a few extra events that are useful during general operation.
1837 */
1838 btintel_set_event_mask_mfg(hdev, false);
1839
1840 btintel_check_bdaddr(hdev);
1841 return 0;
1842 }
1843
inject_cmd_complete(struct hci_dev * hdev,__u16 opcode)1844 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1845 {
1846 struct sk_buff *skb;
1847 struct hci_event_hdr *hdr;
1848 struct hci_ev_cmd_complete *evt;
1849
1850 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1851 if (!skb)
1852 return -ENOMEM;
1853
1854 hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
1855 hdr->evt = HCI_EV_CMD_COMPLETE;
1856 hdr->plen = sizeof(*evt) + 1;
1857
1858 evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
1859 evt->ncmd = 0x01;
1860 evt->opcode = cpu_to_le16(opcode);
1861
1862 *skb_put(skb, 1) = 0x00;
1863
1864 bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
1865
1866 return hci_recv_frame(hdev, skb);
1867 }
1868
btusb_recv_bulk_intel(struct btusb_data * data,void * buffer,int count)1869 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1870 int count)
1871 {
1872 /* When the device is in bootloader mode, then it can send
1873 * events via the bulk endpoint. These events are treated the
1874 * same way as the ones received from the interrupt endpoint.
1875 */
1876 if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1877 return btusb_recv_intr(data, buffer, count);
1878
1879 return btusb_recv_bulk(data, buffer, count);
1880 }
1881
btusb_intel_bootup(struct btusb_data * data,const void * ptr,unsigned int len)1882 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1883 unsigned int len)
1884 {
1885 const struct intel_bootup *evt = ptr;
1886
1887 if (len != sizeof(*evt))
1888 return;
1889
1890 if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1891 smp_mb__after_atomic();
1892 wake_up_bit(&data->flags, BTUSB_BOOTING);
1893 }
1894 }
1895
btusb_intel_secure_send_result(struct btusb_data * data,const void * ptr,unsigned int len)1896 static void btusb_intel_secure_send_result(struct btusb_data *data,
1897 const void *ptr, unsigned int len)
1898 {
1899 const struct intel_secure_send_result *evt = ptr;
1900
1901 if (len != sizeof(*evt))
1902 return;
1903
1904 if (evt->result)
1905 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1906
1907 if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1908 test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1909 smp_mb__after_atomic();
1910 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1911 }
1912 }
1913
btusb_recv_event_intel(struct hci_dev * hdev,struct sk_buff * skb)1914 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1915 {
1916 struct btusb_data *data = hci_get_drvdata(hdev);
1917
1918 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1919 struct hci_event_hdr *hdr = (void *)skb->data;
1920
1921 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1922 hdr->plen > 0) {
1923 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1924 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1925
1926 switch (skb->data[2]) {
1927 case 0x02:
1928 /* When switching to the operational firmware
1929 * the device sends a vendor specific event
1930 * indicating that the bootup completed.
1931 */
1932 btusb_intel_bootup(data, ptr, len);
1933 break;
1934 case 0x06:
1935 /* When the firmware loading completes the
1936 * device sends out a vendor specific event
1937 * indicating the result of the firmware
1938 * loading.
1939 */
1940 btusb_intel_secure_send_result(data, ptr, len);
1941 break;
1942 }
1943 }
1944 }
1945
1946 return hci_recv_frame(hdev, skb);
1947 }
1948
btusb_send_frame_intel(struct hci_dev * hdev,struct sk_buff * skb)1949 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1950 {
1951 struct btusb_data *data = hci_get_drvdata(hdev);
1952 struct urb *urb;
1953
1954 BT_DBG("%s", hdev->name);
1955
1956 switch (bt_cb(skb)->pkt_type) {
1957 case HCI_COMMAND_PKT:
1958 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1959 struct hci_command_hdr *cmd = (void *)skb->data;
1960 __u16 opcode = le16_to_cpu(cmd->opcode);
1961
1962 /* When in bootloader mode and the command 0xfc09
1963 * is received, it needs to be send down the
1964 * bulk endpoint. So allocate a bulk URB instead.
1965 */
1966 if (opcode == 0xfc09)
1967 urb = alloc_bulk_urb(hdev, skb);
1968 else
1969 urb = alloc_ctrl_urb(hdev, skb);
1970
1971 /* When the 0xfc01 command is issued to boot into
1972 * the operational firmware, it will actually not
1973 * send a command complete event. To keep the flow
1974 * control working inject that event here.
1975 */
1976 if (opcode == 0xfc01)
1977 inject_cmd_complete(hdev, opcode);
1978 } else {
1979 urb = alloc_ctrl_urb(hdev, skb);
1980 }
1981 if (IS_ERR(urb))
1982 return PTR_ERR(urb);
1983
1984 hdev->stat.cmd_tx++;
1985 return submit_or_queue_tx_urb(hdev, urb);
1986
1987 case HCI_ACLDATA_PKT:
1988 urb = alloc_bulk_urb(hdev, skb);
1989 if (IS_ERR(urb))
1990 return PTR_ERR(urb);
1991
1992 hdev->stat.acl_tx++;
1993 return submit_or_queue_tx_urb(hdev, urb);
1994
1995 case HCI_SCODATA_PKT:
1996 if (hci_conn_num(hdev, SCO_LINK) < 1)
1997 return -ENODEV;
1998
1999 urb = alloc_isoc_urb(hdev, skb);
2000 if (IS_ERR(urb))
2001 return PTR_ERR(urb);
2002
2003 hdev->stat.sco_tx++;
2004 return submit_tx_urb(hdev, urb);
2005 }
2006
2007 return -EILSEQ;
2008 }
2009
btusb_setup_intel_new(struct hci_dev * hdev)2010 static int btusb_setup_intel_new(struct hci_dev *hdev)
2011 {
2012 static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
2013 0x00, 0x08, 0x04, 0x00 };
2014 struct btusb_data *data = hci_get_drvdata(hdev);
2015 struct sk_buff *skb;
2016 struct intel_version *ver;
2017 struct intel_boot_params *params;
2018 const struct firmware *fw;
2019 const u8 *fw_ptr;
2020 u32 frag_len;
2021 char fwname[64];
2022 ktime_t calltime, delta, rettime;
2023 unsigned long long duration;
2024 int err;
2025
2026 BT_DBG("%s", hdev->name);
2027
2028 calltime = ktime_get();
2029
2030 /* Read the Intel version information to determine if the device
2031 * is in bootloader mode or if it already has operational firmware
2032 * loaded.
2033 */
2034 skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
2035 if (IS_ERR(skb)) {
2036 BT_ERR("%s: Reading Intel version information failed (%ld)",
2037 hdev->name, PTR_ERR(skb));
2038 return PTR_ERR(skb);
2039 }
2040
2041 if (skb->len != sizeof(*ver)) {
2042 BT_ERR("%s: Intel version event size mismatch", hdev->name);
2043 kfree_skb(skb);
2044 return -EILSEQ;
2045 }
2046
2047 ver = (struct intel_version *)skb->data;
2048
2049 /* The hardware platform number has a fixed value of 0x37 and
2050 * for now only accept this single value.
2051 */
2052 if (ver->hw_platform != 0x37) {
2053 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
2054 hdev->name, ver->hw_platform);
2055 kfree_skb(skb);
2056 return -EINVAL;
2057 }
2058
2059 /* At the moment only the hardware variant iBT 3.0 (LnP/SfP) is
2060 * supported by this firmware loading method. This check has been
2061 * put in place to ensure correct forward compatibility options
2062 * when newer hardware variants come along.
2063 */
2064 if (ver->hw_variant != 0x0b) {
2065 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
2066 hdev->name, ver->hw_variant);
2067 kfree_skb(skb);
2068 return -EINVAL;
2069 }
2070
2071 btintel_version_info(hdev, ver);
2072
2073 /* The firmware variant determines if the device is in bootloader
2074 * mode or is running operational firmware. The value 0x06 identifies
2075 * the bootloader and the value 0x23 identifies the operational
2076 * firmware.
2077 *
2078 * When the operational firmware is already present, then only
2079 * the check for valid Bluetooth device address is needed. This
2080 * determines if the device will be added as configured or
2081 * unconfigured controller.
2082 *
2083 * It is not possible to use the Secure Boot Parameters in this
2084 * case since that command is only available in bootloader mode.
2085 */
2086 if (ver->fw_variant == 0x23) {
2087 kfree_skb(skb);
2088 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2089 btintel_check_bdaddr(hdev);
2090 return 0;
2091 }
2092
2093 /* If the device is not in bootloader mode, then the only possible
2094 * choice is to return an error and abort the device initialization.
2095 */
2096 if (ver->fw_variant != 0x06) {
2097 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2098 hdev->name, ver->fw_variant);
2099 kfree_skb(skb);
2100 return -ENODEV;
2101 }
2102
2103 kfree_skb(skb);
2104
2105 /* Read the secure boot parameters to identify the operating
2106 * details of the bootloader.
2107 */
2108 skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2109 if (IS_ERR(skb)) {
2110 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2111 hdev->name, PTR_ERR(skb));
2112 return PTR_ERR(skb);
2113 }
2114
2115 if (skb->len != sizeof(*params)) {
2116 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2117 kfree_skb(skb);
2118 return -EILSEQ;
2119 }
2120
2121 params = (struct intel_boot_params *)skb->data;
2122
2123 BT_INFO("%s: Device revision is %u", hdev->name,
2124 le16_to_cpu(params->dev_revid));
2125
2126 BT_INFO("%s: Secure boot is %s", hdev->name,
2127 params->secure_boot ? "enabled" : "disabled");
2128
2129 BT_INFO("%s: OTP lock is %s", hdev->name,
2130 params->otp_lock ? "enabled" : "disabled");
2131
2132 BT_INFO("%s: API lock is %s", hdev->name,
2133 params->api_lock ? "enabled" : "disabled");
2134
2135 BT_INFO("%s: Debug lock is %s", hdev->name,
2136 params->debug_lock ? "enabled" : "disabled");
2137
2138 BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2139 params->min_fw_build_nn, params->min_fw_build_cw,
2140 2000 + params->min_fw_build_yy);
2141
2142 /* It is required that every single firmware fragment is acknowledged
2143 * with a command complete event. If the boot parameters indicate
2144 * that this bootloader does not send them, then abort the setup.
2145 */
2146 if (params->limited_cce != 0x00) {
2147 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2148 hdev->name, params->limited_cce);
2149 kfree_skb(skb);
2150 return -EINVAL;
2151 }
2152
2153 /* If the OTP has no valid Bluetooth device address, then there will
2154 * also be no valid address for the operational firmware.
2155 */
2156 if (!bacmp(¶ms->otp_bdaddr, BDADDR_ANY)) {
2157 BT_INFO("%s: No device address configured", hdev->name);
2158 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2159 }
2160
2161 /* With this Intel bootloader only the hardware variant and device
2162 * revision information are used to select the right firmware.
2163 *
2164 * Currently this bootloader support is limited to hardware variant
2165 * iBT 3.0 (LnP/SfP) which is identified by the value 11 (0x0b).
2166 */
2167 snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.sfi",
2168 le16_to_cpu(params->dev_revid));
2169
2170 err = request_firmware(&fw, fwname, &hdev->dev);
2171 if (err < 0) {
2172 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2173 hdev->name, err);
2174 kfree_skb(skb);
2175 return err;
2176 }
2177
2178 BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2179
2180 /* Save the DDC file name for later use to apply once the firmware
2181 * downloading is done.
2182 */
2183 snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.ddc",
2184 le16_to_cpu(params->dev_revid));
2185
2186 kfree_skb(skb);
2187
2188 if (fw->size < 644) {
2189 BT_ERR("%s: Invalid size of firmware file (%zu)",
2190 hdev->name, fw->size);
2191 err = -EBADF;
2192 goto done;
2193 }
2194
2195 set_bit(BTUSB_DOWNLOADING, &data->flags);
2196
2197 /* Start the firmware download transaction with the Init fragment
2198 * represented by the 128 bytes of CSS header.
2199 */
2200 err = btintel_secure_send(hdev, 0x00, 128, fw->data);
2201 if (err < 0) {
2202 BT_ERR("%s: Failed to send firmware header (%d)",
2203 hdev->name, err);
2204 goto done;
2205 }
2206
2207 /* Send the 256 bytes of public key information from the firmware
2208 * as the PKey fragment.
2209 */
2210 err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128);
2211 if (err < 0) {
2212 BT_ERR("%s: Failed to send firmware public key (%d)",
2213 hdev->name, err);
2214 goto done;
2215 }
2216
2217 /* Send the 256 bytes of signature information from the firmware
2218 * as the Sign fragment.
2219 */
2220 err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388);
2221 if (err < 0) {
2222 BT_ERR("%s: Failed to send firmware signature (%d)",
2223 hdev->name, err);
2224 goto done;
2225 }
2226
2227 fw_ptr = fw->data + 644;
2228 frag_len = 0;
2229
2230 while (fw_ptr - fw->data < fw->size) {
2231 struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
2232
2233 frag_len += sizeof(*cmd) + cmd->plen;
2234
2235 /* The parameter length of the secure send command requires
2236 * a 4 byte alignment. It happens so that the firmware file
2237 * contains proper Intel_NOP commands to align the fragments
2238 * as needed.
2239 *
2240 * Send set of commands with 4 byte alignment from the
2241 * firmware data buffer as a single Data fragement.
2242 */
2243 if (!(frag_len % 4)) {
2244 err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr);
2245 if (err < 0) {
2246 BT_ERR("%s: Failed to send firmware data (%d)",
2247 hdev->name, err);
2248 goto done;
2249 }
2250
2251 fw_ptr += frag_len;
2252 frag_len = 0;
2253 }
2254 }
2255
2256 set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2257
2258 BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2259
2260 /* Before switching the device into operational mode and with that
2261 * booting the loaded firmware, wait for the bootloader notification
2262 * that all fragments have been successfully received.
2263 *
2264 * When the event processing receives the notification, then the
2265 * BTUSB_DOWNLOADING flag will be cleared.
2266 *
2267 * The firmware loading should not take longer than 5 seconds
2268 * and thus just timeout if that happens and fail the setup
2269 * of this device.
2270 */
2271 err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2272 TASK_INTERRUPTIBLE,
2273 msecs_to_jiffies(5000));
2274 if (err == 1) {
2275 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2276 err = -EINTR;
2277 goto done;
2278 }
2279
2280 if (err) {
2281 BT_ERR("%s: Firmware loading timeout", hdev->name);
2282 err = -ETIMEDOUT;
2283 goto done;
2284 }
2285
2286 if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2287 BT_ERR("%s: Firmware loading failed", hdev->name);
2288 err = -ENOEXEC;
2289 goto done;
2290 }
2291
2292 rettime = ktime_get();
2293 delta = ktime_sub(rettime, calltime);
2294 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2295
2296 BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2297
2298 done:
2299 release_firmware(fw);
2300
2301 if (err < 0)
2302 return err;
2303
2304 calltime = ktime_get();
2305
2306 set_bit(BTUSB_BOOTING, &data->flags);
2307
2308 skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2309 HCI_INIT_TIMEOUT);
2310 if (IS_ERR(skb))
2311 return PTR_ERR(skb);
2312
2313 kfree_skb(skb);
2314
2315 /* The bootloader will not indicate when the device is ready. This
2316 * is done by the operational firmware sending bootup notification.
2317 *
2318 * Booting into operational firmware should not take longer than
2319 * 1 second. However if that happens, then just fail the setup
2320 * since something went wrong.
2321 */
2322 BT_INFO("%s: Waiting for device to boot", hdev->name);
2323
2324 err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2325 TASK_INTERRUPTIBLE,
2326 msecs_to_jiffies(1000));
2327
2328 if (err == 1) {
2329 BT_ERR("%s: Device boot interrupted", hdev->name);
2330 return -EINTR;
2331 }
2332
2333 if (err) {
2334 BT_ERR("%s: Device boot timeout", hdev->name);
2335 return -ETIMEDOUT;
2336 }
2337
2338 rettime = ktime_get();
2339 delta = ktime_sub(rettime, calltime);
2340 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2341
2342 BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2343
2344 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2345
2346 /* Once the device is running in operational mode, it needs to apply
2347 * the device configuration (DDC) parameters.
2348 *
2349 * The device can work without DDC parameters, so even if it fails
2350 * to load the file, no need to fail the setup.
2351 */
2352 btintel_load_ddc_config(hdev, fwname);
2353
2354 /* Set the event mask for Intel specific vendor events. This enables
2355 * a few extra events that are useful during general operation. It
2356 * does not enable any debugging related events.
2357 *
2358 * The device will function correctly without these events enabled
2359 * and thus no need to fail the setup.
2360 */
2361 btintel_set_event_mask(hdev, false);
2362
2363 return 0;
2364 }
2365
btusb_shutdown_intel(struct hci_dev * hdev)2366 static int btusb_shutdown_intel(struct hci_dev *hdev)
2367 {
2368 struct sk_buff *skb;
2369 long ret;
2370
2371 /* Some platforms have an issue with BT LED when the interface is
2372 * down or BT radio is turned off, which takes 5 seconds to BT LED
2373 * goes off. This command turns off the BT LED immediately.
2374 */
2375 skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2376 if (IS_ERR(skb)) {
2377 ret = PTR_ERR(skb);
2378 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2379 hdev->name, ret);
2380 return ret;
2381 }
2382 kfree_skb(skb);
2383
2384 return 0;
2385 }
2386
btusb_set_bdaddr_marvell(struct hci_dev * hdev,const bdaddr_t * bdaddr)2387 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2388 const bdaddr_t *bdaddr)
2389 {
2390 struct sk_buff *skb;
2391 u8 buf[8];
2392 long ret;
2393
2394 buf[0] = 0xfe;
2395 buf[1] = sizeof(bdaddr_t);
2396 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2397
2398 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2399 if (IS_ERR(skb)) {
2400 ret = PTR_ERR(skb);
2401 BT_ERR("%s: changing Marvell device address failed (%ld)",
2402 hdev->name, ret);
2403 return ret;
2404 }
2405 kfree_skb(skb);
2406
2407 return 0;
2408 }
2409
btusb_set_bdaddr_ath3012(struct hci_dev * hdev,const bdaddr_t * bdaddr)2410 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2411 const bdaddr_t *bdaddr)
2412 {
2413 struct sk_buff *skb;
2414 u8 buf[10];
2415 long ret;
2416
2417 buf[0] = 0x01;
2418 buf[1] = 0x01;
2419 buf[2] = 0x00;
2420 buf[3] = sizeof(bdaddr_t);
2421 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2422
2423 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2424 if (IS_ERR(skb)) {
2425 ret = PTR_ERR(skb);
2426 BT_ERR("%s: Change address command failed (%ld)",
2427 hdev->name, ret);
2428 return ret;
2429 }
2430 kfree_skb(skb);
2431
2432 return 0;
2433 }
2434
2435 #define QCA_DFU_PACKET_LEN 4096
2436
2437 #define QCA_GET_TARGET_VERSION 0x09
2438 #define QCA_CHECK_STATUS 0x05
2439 #define QCA_DFU_DOWNLOAD 0x01
2440
2441 #define QCA_SYSCFG_UPDATED 0x40
2442 #define QCA_PATCH_UPDATED 0x80
2443 #define QCA_DFU_TIMEOUT 3000
2444
2445 struct qca_version {
2446 __le32 rom_version;
2447 __le32 patch_version;
2448 __le32 ram_version;
2449 __le32 ref_clock;
2450 __u8 reserved[4];
2451 } __packed;
2452
2453 struct qca_rampatch_version {
2454 __le16 rom_version;
2455 __le16 patch_version;
2456 } __packed;
2457
2458 struct qca_device_info {
2459 u32 rom_version;
2460 u8 rampatch_hdr; /* length of header in rampatch */
2461 u8 nvm_hdr; /* length of header in NVM */
2462 u8 ver_offset; /* offset of version structure in rampatch */
2463 };
2464
2465 static const struct qca_device_info qca_devices_table[] = {
2466 { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2467 { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2468 { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2469 { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2470 { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2471 { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2472 };
2473
btusb_qca_send_vendor_req(struct hci_dev * hdev,u8 request,void * data,u16 size)2474 static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request,
2475 void *data, u16 size)
2476 {
2477 struct btusb_data *btdata = hci_get_drvdata(hdev);
2478 struct usb_device *udev = btdata->udev;
2479 int pipe, err;
2480 u8 *buf;
2481
2482 buf = kmalloc(size, GFP_KERNEL);
2483 if (!buf)
2484 return -ENOMEM;
2485
2486 /* Found some of USB hosts have IOT issues with ours so that we should
2487 * not wait until HCI layer is ready.
2488 */
2489 pipe = usb_rcvctrlpipe(udev, 0);
2490 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2491 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2492 if (err < 0) {
2493 BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err);
2494 goto done;
2495 }
2496
2497 memcpy(data, buf, size);
2498
2499 done:
2500 kfree(buf);
2501
2502 return err;
2503 }
2504
btusb_setup_qca_download_fw(struct hci_dev * hdev,const struct firmware * firmware,size_t hdr_size)2505 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2506 const struct firmware *firmware,
2507 size_t hdr_size)
2508 {
2509 struct btusb_data *btdata = hci_get_drvdata(hdev);
2510 struct usb_device *udev = btdata->udev;
2511 size_t count, size, sent = 0;
2512 int pipe, len, err;
2513 u8 *buf;
2514
2515 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2516 if (!buf)
2517 return -ENOMEM;
2518
2519 count = firmware->size;
2520
2521 size = min_t(size_t, count, hdr_size);
2522 memcpy(buf, firmware->data, size);
2523
2524 /* USB patches should go down to controller through USB path
2525 * because binary format fits to go down through USB channel.
2526 * USB control path is for patching headers and USB bulk is for
2527 * patch body.
2528 */
2529 pipe = usb_sndctrlpipe(udev, 0);
2530 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2531 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2532 if (err < 0) {
2533 BT_ERR("%s: Failed to send headers (%d)", hdev->name, err);
2534 goto done;
2535 }
2536
2537 sent += size;
2538 count -= size;
2539
2540 while (count) {
2541 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2542
2543 memcpy(buf, firmware->data + sent, size);
2544
2545 pipe = usb_sndbulkpipe(udev, 0x02);
2546 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2547 QCA_DFU_TIMEOUT);
2548 if (err < 0) {
2549 BT_ERR("%s: Failed to send body at %zd of %zd (%d)",
2550 hdev->name, sent, firmware->size, err);
2551 break;
2552 }
2553
2554 if (size != len) {
2555 BT_ERR("%s: Failed to get bulk buffer", hdev->name);
2556 err = -EILSEQ;
2557 break;
2558 }
2559
2560 sent += size;
2561 count -= size;
2562 }
2563
2564 done:
2565 kfree(buf);
2566 return err;
2567 }
2568
btusb_setup_qca_load_rampatch(struct hci_dev * hdev,struct qca_version * ver,const struct qca_device_info * info)2569 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2570 struct qca_version *ver,
2571 const struct qca_device_info *info)
2572 {
2573 struct qca_rampatch_version *rver;
2574 const struct firmware *fw;
2575 u32 ver_rom, ver_patch;
2576 u16 rver_rom, rver_patch;
2577 char fwname[64];
2578 int err;
2579
2580 ver_rom = le32_to_cpu(ver->rom_version);
2581 ver_patch = le32_to_cpu(ver->patch_version);
2582
2583 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2584
2585 err = request_firmware(&fw, fwname, &hdev->dev);
2586 if (err) {
2587 BT_ERR("%s: failed to request rampatch file: %s (%d)",
2588 hdev->name, fwname, err);
2589 return err;
2590 }
2591
2592 BT_INFO("%s: using rampatch file: %s", hdev->name, fwname);
2593
2594 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2595 rver_rom = le16_to_cpu(rver->rom_version);
2596 rver_patch = le16_to_cpu(rver->patch_version);
2597
2598 BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x "
2599 "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom,
2600 ver_patch);
2601
2602 if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2603 BT_ERR("%s: rampatch file version did not match with firmware",
2604 hdev->name);
2605 err = -EINVAL;
2606 goto done;
2607 }
2608
2609 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2610
2611 done:
2612 release_firmware(fw);
2613
2614 return err;
2615 }
2616
btusb_setup_qca_load_nvm(struct hci_dev * hdev,struct qca_version * ver,const struct qca_device_info * info)2617 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2618 struct qca_version *ver,
2619 const struct qca_device_info *info)
2620 {
2621 const struct firmware *fw;
2622 char fwname[64];
2623 int err;
2624
2625 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2626 le32_to_cpu(ver->rom_version));
2627
2628 err = request_firmware(&fw, fwname, &hdev->dev);
2629 if (err) {
2630 BT_ERR("%s: failed to request NVM file: %s (%d)",
2631 hdev->name, fwname, err);
2632 return err;
2633 }
2634
2635 BT_INFO("%s: using NVM file: %s", hdev->name, fwname);
2636
2637 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2638
2639 release_firmware(fw);
2640
2641 return err;
2642 }
2643
btusb_setup_qca(struct hci_dev * hdev)2644 static int btusb_setup_qca(struct hci_dev *hdev)
2645 {
2646 const struct qca_device_info *info = NULL;
2647 struct qca_version ver;
2648 u32 ver_rom;
2649 u8 status;
2650 int i, err;
2651
2652 err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver,
2653 sizeof(ver));
2654 if (err < 0)
2655 return err;
2656
2657 ver_rom = le32_to_cpu(ver.rom_version);
2658 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2659 if (ver_rom == qca_devices_table[i].rom_version)
2660 info = &qca_devices_table[i];
2661 }
2662 if (!info) {
2663 BT_ERR("%s: don't support firmware rome 0x%x", hdev->name,
2664 ver_rom);
2665 return -ENODEV;
2666 }
2667
2668 err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status,
2669 sizeof(status));
2670 if (err < 0)
2671 return err;
2672
2673 if (!(status & QCA_PATCH_UPDATED)) {
2674 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2675 if (err < 0)
2676 return err;
2677 }
2678
2679 if (!(status & QCA_SYSCFG_UPDATED)) {
2680 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2681 if (err < 0)
2682 return err;
2683 }
2684
2685 return 0;
2686 }
2687
2688 #ifdef CONFIG_BT_HCIBTUSB_BCM
__set_diag_interface(struct hci_dev * hdev)2689 static inline int __set_diag_interface(struct hci_dev *hdev)
2690 {
2691 struct btusb_data *data = hci_get_drvdata(hdev);
2692 struct usb_interface *intf = data->diag;
2693 int i;
2694
2695 if (!data->diag)
2696 return -ENODEV;
2697
2698 data->diag_tx_ep = NULL;
2699 data->diag_rx_ep = NULL;
2700
2701 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2702 struct usb_endpoint_descriptor *ep_desc;
2703
2704 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2705
2706 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2707 data->diag_tx_ep = ep_desc;
2708 continue;
2709 }
2710
2711 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2712 data->diag_rx_ep = ep_desc;
2713 continue;
2714 }
2715 }
2716
2717 if (!data->diag_tx_ep || !data->diag_rx_ep) {
2718 BT_ERR("%s invalid diagnostic descriptors", hdev->name);
2719 return -ENODEV;
2720 }
2721
2722 return 0;
2723 }
2724
alloc_diag_urb(struct hci_dev * hdev,bool enable)2725 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
2726 {
2727 struct btusb_data *data = hci_get_drvdata(hdev);
2728 struct sk_buff *skb;
2729 struct urb *urb;
2730 unsigned int pipe;
2731
2732 if (!data->diag_tx_ep)
2733 return ERR_PTR(-ENODEV);
2734
2735 urb = usb_alloc_urb(0, GFP_KERNEL);
2736 if (!urb)
2737 return ERR_PTR(-ENOMEM);
2738
2739 skb = bt_skb_alloc(2, GFP_KERNEL);
2740 if (!skb) {
2741 usb_free_urb(urb);
2742 return ERR_PTR(-ENOMEM);
2743 }
2744
2745 *skb_put(skb, 1) = 0xf0;
2746 *skb_put(skb, 1) = enable;
2747
2748 pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
2749
2750 usb_fill_bulk_urb(urb, data->udev, pipe,
2751 skb->data, skb->len, btusb_tx_complete, skb);
2752
2753 skb->dev = (void *)hdev;
2754
2755 return urb;
2756 }
2757
btusb_bcm_set_diag(struct hci_dev * hdev,bool enable)2758 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
2759 {
2760 struct btusb_data *data = hci_get_drvdata(hdev);
2761 struct urb *urb;
2762
2763 if (!data->diag)
2764 return -ENODEV;
2765
2766 if (!test_bit(HCI_RUNNING, &hdev->flags))
2767 return -ENETDOWN;
2768
2769 urb = alloc_diag_urb(hdev, enable);
2770 if (IS_ERR(urb))
2771 return PTR_ERR(urb);
2772
2773 return submit_or_queue_tx_urb(hdev, urb);
2774 }
2775 #endif
2776
btusb_probe(struct usb_interface * intf,const struct usb_device_id * id)2777 static int btusb_probe(struct usb_interface *intf,
2778 const struct usb_device_id *id)
2779 {
2780 struct usb_endpoint_descriptor *ep_desc;
2781 struct btusb_data *data;
2782 struct hci_dev *hdev;
2783 unsigned ifnum_base;
2784 int i, err;
2785
2786 BT_DBG("intf %p id %p", intf, id);
2787
2788 /* interface numbers are hardcoded in the spec */
2789 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
2790 if (!(id->driver_info & BTUSB_IFNUM_2))
2791 return -ENODEV;
2792 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
2793 return -ENODEV;
2794 }
2795
2796 ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
2797
2798 if (!id->driver_info) {
2799 const struct usb_device_id *match;
2800
2801 match = usb_match_id(intf, blacklist_table);
2802 if (match)
2803 id = match;
2804 }
2805
2806 if (id->driver_info == BTUSB_IGNORE)
2807 return -ENODEV;
2808
2809 if (id->driver_info & BTUSB_ATH3012) {
2810 struct usb_device *udev = interface_to_usbdev(intf);
2811
2812 /* Old firmware would otherwise let ath3k driver load
2813 * patch and sysconfig files */
2814 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2815 return -ENODEV;
2816 }
2817
2818 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2819 if (!data)
2820 return -ENOMEM;
2821
2822 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2823 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2824
2825 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2826 data->intr_ep = ep_desc;
2827 continue;
2828 }
2829
2830 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2831 data->bulk_tx_ep = ep_desc;
2832 continue;
2833 }
2834
2835 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2836 data->bulk_rx_ep = ep_desc;
2837 continue;
2838 }
2839 }
2840
2841 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2842 return -ENODEV;
2843
2844 if (id->driver_info & BTUSB_AMP) {
2845 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2846 data->cmdreq = 0x2b;
2847 } else {
2848 data->cmdreq_type = USB_TYPE_CLASS;
2849 data->cmdreq = 0x00;
2850 }
2851
2852 data->udev = interface_to_usbdev(intf);
2853 data->intf = intf;
2854
2855 INIT_WORK(&data->work, btusb_work);
2856 INIT_WORK(&data->waker, btusb_waker);
2857 init_usb_anchor(&data->deferred);
2858 init_usb_anchor(&data->tx_anchor);
2859 spin_lock_init(&data->txlock);
2860
2861 init_usb_anchor(&data->intr_anchor);
2862 init_usb_anchor(&data->bulk_anchor);
2863 init_usb_anchor(&data->isoc_anchor);
2864 init_usb_anchor(&data->diag_anchor);
2865 spin_lock_init(&data->rxlock);
2866
2867 if (id->driver_info & BTUSB_INTEL_NEW) {
2868 data->recv_event = btusb_recv_event_intel;
2869 data->recv_bulk = btusb_recv_bulk_intel;
2870 set_bit(BTUSB_BOOTLOADER, &data->flags);
2871 } else {
2872 data->recv_event = hci_recv_frame;
2873 data->recv_bulk = btusb_recv_bulk;
2874 }
2875
2876 hdev = hci_alloc_dev();
2877 if (!hdev)
2878 return -ENOMEM;
2879
2880 hdev->bus = HCI_USB;
2881 hci_set_drvdata(hdev, data);
2882
2883 if (id->driver_info & BTUSB_AMP)
2884 hdev->dev_type = HCI_AMP;
2885 else
2886 hdev->dev_type = HCI_BREDR;
2887
2888 data->hdev = hdev;
2889
2890 SET_HCIDEV_DEV(hdev, &intf->dev);
2891
2892 hdev->open = btusb_open;
2893 hdev->close = btusb_close;
2894 hdev->flush = btusb_flush;
2895 hdev->send = btusb_send_frame;
2896 hdev->notify = btusb_notify;
2897
2898 if (id->driver_info & BTUSB_BCM2045)
2899 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2900
2901 if (id->driver_info & BTUSB_BCM92035)
2902 hdev->setup = btusb_setup_bcm92035;
2903
2904 #ifdef CONFIG_BT_HCIBTUSB_BCM
2905 if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2906 hdev->manufacturer = 15;
2907 hdev->setup = btbcm_setup_patchram;
2908 hdev->set_diag = btusb_bcm_set_diag;
2909 hdev->set_bdaddr = btbcm_set_bdaddr;
2910
2911 /* Broadcom LM_DIAG Interface numbers are hardcoded */
2912 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
2913 }
2914
2915 if (id->driver_info & BTUSB_BCM_APPLE) {
2916 hdev->manufacturer = 15;
2917 hdev->setup = btbcm_setup_apple;
2918 hdev->set_diag = btusb_bcm_set_diag;
2919
2920 /* Broadcom LM_DIAG Interface numbers are hardcoded */
2921 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
2922 }
2923 #endif
2924
2925 if (id->driver_info & BTUSB_INTEL) {
2926 hdev->manufacturer = 2;
2927 hdev->setup = btusb_setup_intel;
2928 hdev->shutdown = btusb_shutdown_intel;
2929 hdev->set_diag = btintel_set_diag_mfg;
2930 hdev->set_bdaddr = btintel_set_bdaddr;
2931 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2932 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2933 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
2934 }
2935
2936 if (id->driver_info & BTUSB_INTEL_NEW) {
2937 hdev->manufacturer = 2;
2938 hdev->send = btusb_send_frame_intel;
2939 hdev->setup = btusb_setup_intel_new;
2940 hdev->hw_error = btintel_hw_error;
2941 hdev->set_diag = btintel_set_diag;
2942 hdev->set_bdaddr = btintel_set_bdaddr;
2943 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2944 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
2945 }
2946
2947 if (id->driver_info & BTUSB_MARVELL)
2948 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2949
2950 if (id->driver_info & BTUSB_SWAVE) {
2951 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
2952 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
2953 }
2954
2955 if (id->driver_info & BTUSB_INTEL_BOOT) {
2956 hdev->manufacturer = 2;
2957 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2958 }
2959
2960 if (id->driver_info & BTUSB_ATH3012) {
2961 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2962 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2963 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2964 }
2965
2966 if (id->driver_info & BTUSB_QCA_ROME) {
2967 data->setup_on_usb = btusb_setup_qca;
2968 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2969 }
2970
2971 #ifdef CONFIG_BT_HCIBTUSB_RTL
2972 if (id->driver_info & BTUSB_REALTEK) {
2973 hdev->setup = btrtl_setup_realtek;
2974
2975 /* Realtek devices lose their updated firmware over suspend,
2976 * but the USB hub doesn't notice any status change.
2977 * Explicitly request a device reset on resume.
2978 */
2979 set_bit(BTUSB_RESET_RESUME, &data->flags);
2980 }
2981 #endif
2982
2983 if (id->driver_info & BTUSB_AMP) {
2984 /* AMP controllers do not support SCO packets */
2985 data->isoc = NULL;
2986 } else {
2987 /* Interface orders are hardcoded in the specification */
2988 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
2989 }
2990
2991 if (!reset)
2992 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2993
2994 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2995 if (!disable_scofix)
2996 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2997 }
2998
2999 if (id->driver_info & BTUSB_BROKEN_ISOC)
3000 data->isoc = NULL;
3001
3002 if (id->driver_info & BTUSB_DIGIANSWER) {
3003 data->cmdreq_type = USB_TYPE_VENDOR;
3004 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3005 }
3006
3007 if (id->driver_info & BTUSB_CSR) {
3008 struct usb_device *udev = data->udev;
3009 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3010
3011 /* Old firmware would otherwise execute USB reset */
3012 if (bcdDevice < 0x117)
3013 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3014
3015 /* Fake CSR devices with broken commands */
3016 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3017 hdev->setup = btusb_setup_csr;
3018
3019 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3020 }
3021
3022 if (id->driver_info & BTUSB_SNIFFER) {
3023 struct usb_device *udev = data->udev;
3024
3025 /* New sniffer firmware has crippled HCI interface */
3026 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3027 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3028 }
3029
3030 if (id->driver_info & BTUSB_INTEL_BOOT) {
3031 /* A bug in the bootloader causes that interrupt interface is
3032 * only enabled after receiving SetInterface(0, AltSetting=0).
3033 */
3034 err = usb_set_interface(data->udev, 0, 0);
3035 if (err < 0) {
3036 BT_ERR("failed to set interface 0, alt 0 %d", err);
3037 hci_free_dev(hdev);
3038 return err;
3039 }
3040 }
3041
3042 if (data->isoc) {
3043 err = usb_driver_claim_interface(&btusb_driver,
3044 data->isoc, data);
3045 if (err < 0) {
3046 hci_free_dev(hdev);
3047 return err;
3048 }
3049 }
3050
3051 #ifdef CONFIG_BT_HCIBTUSB_BCM
3052 if (data->diag) {
3053 if (!usb_driver_claim_interface(&btusb_driver,
3054 data->diag, data))
3055 __set_diag_interface(hdev);
3056 else
3057 data->diag = NULL;
3058 }
3059 #endif
3060
3061 err = hci_register_dev(hdev);
3062 if (err < 0) {
3063 hci_free_dev(hdev);
3064 return err;
3065 }
3066
3067 usb_set_intfdata(intf, data);
3068
3069 return 0;
3070 }
3071
btusb_disconnect(struct usb_interface * intf)3072 static void btusb_disconnect(struct usb_interface *intf)
3073 {
3074 struct btusb_data *data = usb_get_intfdata(intf);
3075 struct hci_dev *hdev;
3076
3077 BT_DBG("intf %p", intf);
3078
3079 if (!data)
3080 return;
3081
3082 hdev = data->hdev;
3083 usb_set_intfdata(data->intf, NULL);
3084
3085 if (data->isoc)
3086 usb_set_intfdata(data->isoc, NULL);
3087
3088 if (data->diag)
3089 usb_set_intfdata(data->diag, NULL);
3090
3091 hci_unregister_dev(hdev);
3092
3093 if (intf == data->intf) {
3094 if (data->isoc)
3095 usb_driver_release_interface(&btusb_driver, data->isoc);
3096 if (data->diag)
3097 usb_driver_release_interface(&btusb_driver, data->diag);
3098 } else if (intf == data->isoc) {
3099 if (data->diag)
3100 usb_driver_release_interface(&btusb_driver, data->diag);
3101 usb_driver_release_interface(&btusb_driver, data->intf);
3102 } else if (intf == data->diag) {
3103 usb_driver_release_interface(&btusb_driver, data->intf);
3104 if (data->isoc)
3105 usb_driver_release_interface(&btusb_driver, data->isoc);
3106 }
3107
3108 hci_free_dev(hdev);
3109 }
3110
3111 #ifdef CONFIG_PM
btusb_suspend(struct usb_interface * intf,pm_message_t message)3112 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3113 {
3114 struct btusb_data *data = usb_get_intfdata(intf);
3115
3116 BT_DBG("intf %p", intf);
3117
3118 if (data->suspend_count++)
3119 return 0;
3120
3121 spin_lock_irq(&data->txlock);
3122 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3123 set_bit(BTUSB_SUSPENDING, &data->flags);
3124 spin_unlock_irq(&data->txlock);
3125 } else {
3126 spin_unlock_irq(&data->txlock);
3127 data->suspend_count--;
3128 return -EBUSY;
3129 }
3130
3131 cancel_work_sync(&data->work);
3132
3133 btusb_stop_traffic(data);
3134 usb_kill_anchored_urbs(&data->tx_anchor);
3135
3136 /* Optionally request a device reset on resume, but only when
3137 * wakeups are disabled. If wakeups are enabled we assume the
3138 * device will stay powered up throughout suspend.
3139 */
3140 if (test_bit(BTUSB_RESET_RESUME, &data->flags) &&
3141 !device_may_wakeup(&data->udev->dev))
3142 data->udev->reset_resume = 1;
3143
3144 return 0;
3145 }
3146
play_deferred(struct btusb_data * data)3147 static void play_deferred(struct btusb_data *data)
3148 {
3149 struct urb *urb;
3150 int err;
3151
3152 while ((urb = usb_get_from_anchor(&data->deferred))) {
3153 err = usb_submit_urb(urb, GFP_ATOMIC);
3154 if (err < 0)
3155 break;
3156
3157 data->tx_in_flight++;
3158 }
3159 usb_scuttle_anchored_urbs(&data->deferred);
3160 }
3161
btusb_resume(struct usb_interface * intf)3162 static int btusb_resume(struct usb_interface *intf)
3163 {
3164 struct btusb_data *data = usb_get_intfdata(intf);
3165 struct hci_dev *hdev = data->hdev;
3166 int err = 0;
3167
3168 BT_DBG("intf %p", intf);
3169
3170 if (--data->suspend_count)
3171 return 0;
3172
3173 if (!test_bit(HCI_RUNNING, &hdev->flags))
3174 goto done;
3175
3176 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3177 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3178 if (err < 0) {
3179 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3180 goto failed;
3181 }
3182 }
3183
3184 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3185 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3186 if (err < 0) {
3187 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3188 goto failed;
3189 }
3190
3191 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3192 }
3193
3194 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3195 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3196 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3197 else
3198 btusb_submit_isoc_urb(hdev, GFP_NOIO);
3199 }
3200
3201 spin_lock_irq(&data->txlock);
3202 play_deferred(data);
3203 clear_bit(BTUSB_SUSPENDING, &data->flags);
3204 spin_unlock_irq(&data->txlock);
3205 schedule_work(&data->work);
3206
3207 return 0;
3208
3209 failed:
3210 usb_scuttle_anchored_urbs(&data->deferred);
3211 done:
3212 spin_lock_irq(&data->txlock);
3213 clear_bit(BTUSB_SUSPENDING, &data->flags);
3214 spin_unlock_irq(&data->txlock);
3215
3216 return err;
3217 }
3218 #endif
3219
3220 static struct usb_driver btusb_driver = {
3221 .name = "btusb",
3222 .probe = btusb_probe,
3223 .disconnect = btusb_disconnect,
3224 #ifdef CONFIG_PM
3225 .suspend = btusb_suspend,
3226 .resume = btusb_resume,
3227 #endif
3228 .id_table = btusb_table,
3229 .supports_autosuspend = 1,
3230 .disable_hub_initiated_lpm = 1,
3231 };
3232
3233 module_usb_driver(btusb_driver);
3234
3235 module_param(disable_scofix, bool, 0644);
3236 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3237
3238 module_param(force_scofix, bool, 0644);
3239 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3240
3241 module_param(reset, bool, 0644);
3242 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3243
3244 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3245 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3246 MODULE_VERSION(VERSION);
3247 MODULE_LICENSE("GPL");
3248