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
35 #define VERSION "0.8"
36
37 static bool disable_scofix;
38 static bool force_scofix;
39
40 static bool reset = 1;
41
42 static struct usb_driver btusb_driver;
43
44 #define BTUSB_IGNORE 0x01
45 #define BTUSB_DIGIANSWER 0x02
46 #define BTUSB_CSR 0x04
47 #define BTUSB_SNIFFER 0x08
48 #define BTUSB_BCM92035 0x10
49 #define BTUSB_BROKEN_ISOC 0x20
50 #define BTUSB_WRONG_SCO_MTU 0x40
51 #define BTUSB_ATH3012 0x80
52 #define BTUSB_INTEL 0x100
53 #define BTUSB_INTEL_BOOT 0x200
54 #define BTUSB_BCM_PATCHRAM 0x400
55 #define BTUSB_MARVELL 0x800
56 #define BTUSB_SWAVE 0x1000
57 #define BTUSB_INTEL_NEW 0x2000
58 #define BTUSB_AMP 0x4000
59 #define BTUSB_QCA_ROME 0x8000
60 #define BTUSB_BCM_APPLE 0x10000
61 #define BTUSB_REALTEK 0x20000
62
63 static const struct usb_device_id btusb_table[] = {
64 /* Generic Bluetooth USB device */
65 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
66
67 /* Generic Bluetooth AMP device */
68 { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
69
70 /* Apple-specific (Broadcom) devices */
71 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
72 .driver_info = BTUSB_BCM_APPLE },
73
74 /* MediaTek MT76x0E */
75 { USB_DEVICE(0x0e8d, 0x763f) },
76
77 /* Broadcom SoftSailing reporting vendor specific */
78 { USB_DEVICE(0x0a5c, 0x21e1) },
79
80 /* Apple MacBookPro 7,1 */
81 { USB_DEVICE(0x05ac, 0x8213) },
82
83 /* Apple iMac11,1 */
84 { USB_DEVICE(0x05ac, 0x8215) },
85
86 /* Apple MacBookPro6,2 */
87 { USB_DEVICE(0x05ac, 0x8218) },
88
89 /* Apple MacBookAir3,1, MacBookAir3,2 */
90 { USB_DEVICE(0x05ac, 0x821b) },
91
92 /* Apple MacBookAir4,1 */
93 { USB_DEVICE(0x05ac, 0x821f) },
94
95 /* Apple MacBookPro8,2 */
96 { USB_DEVICE(0x05ac, 0x821a) },
97
98 /* Apple MacMini5,1 */
99 { USB_DEVICE(0x05ac, 0x8281) },
100
101 /* AVM BlueFRITZ! USB v2.0 */
102 { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
103
104 /* Bluetooth Ultraport Module from IBM */
105 { USB_DEVICE(0x04bf, 0x030a) },
106
107 /* ALPS Modules with non-standard id */
108 { USB_DEVICE(0x044e, 0x3001) },
109 { USB_DEVICE(0x044e, 0x3002) },
110
111 /* Ericsson with non-standard id */
112 { USB_DEVICE(0x0bdb, 0x1002) },
113
114 /* Canyon CN-BTU1 with HID interfaces */
115 { USB_DEVICE(0x0c10, 0x0000) },
116
117 /* Broadcom BCM20702A0 */
118 { USB_DEVICE(0x413c, 0x8197) },
119
120 /* Broadcom BCM20702B0 (Dynex/Insignia) */
121 { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
122
123 /* Foxconn - Hon Hai */
124 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
125 .driver_info = BTUSB_BCM_PATCHRAM },
126
127 /* Lite-On Technology - Broadcom based */
128 { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
129 .driver_info = BTUSB_BCM_PATCHRAM },
130
131 /* Broadcom devices with vendor specific id */
132 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
133 .driver_info = BTUSB_BCM_PATCHRAM },
134
135 /* ASUSTek Computer - Broadcom based */
136 { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
137 .driver_info = BTUSB_BCM_PATCHRAM },
138
139 /* Belkin F8065bf - Broadcom based */
140 { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
141 .driver_info = BTUSB_BCM_PATCHRAM },
142
143 /* IMC Networks - Broadcom based */
144 { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
145 .driver_info = BTUSB_BCM_PATCHRAM },
146
147 /* Toshiba Corp - Broadcom based */
148 { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
149 .driver_info = BTUSB_BCM_PATCHRAM },
150
151 /* Intel Bluetooth USB Bootloader (RAM module) */
152 { USB_DEVICE(0x8087, 0x0a5a),
153 .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
154
155 { } /* Terminating entry */
156 };
157
158 MODULE_DEVICE_TABLE(usb, btusb_table);
159
160 static const struct usb_device_id blacklist_table[] = {
161 /* CSR BlueCore devices */
162 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
163
164 /* Broadcom BCM2033 without firmware */
165 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
166
167 /* Atheros 3011 with sflash firmware */
168 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
169 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
170 { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
171 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
172 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
173 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
174 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
175
176 /* Atheros AR9285 Malbec with sflash firmware */
177 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
178
179 /* Atheros 3012 with sflash firmware */
180 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
181 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
182 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
183 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
184 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
185 { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
186 { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
187 { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
188 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
189 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
190 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
191 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
192 { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
193 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
194 { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
195 { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
196 { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
197 { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
198 { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
199 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
200 { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
201 { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
202 { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
203 { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
204 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
205 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
206 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
207 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
208 { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
209 { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
210 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
211 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
212 { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
213 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
214 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
215 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
216 { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
217 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
218 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
219 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
220 { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
221 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
222 { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
223 { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
224 { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
225 { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
226 { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
227
228 /* Atheros AR5BBU12 with sflash firmware */
229 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
230
231 /* Atheros AR5BBU12 with sflash firmware */
232 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
233 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
234
235 /* QCA ROME chipset */
236 { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
237 { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
238 { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
239
240 /* Broadcom BCM2035 */
241 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
242 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
243 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
244
245 /* Broadcom BCM2045 */
246 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
247 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
248
249 /* IBM/Lenovo ThinkPad with Broadcom chip */
250 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
251 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
252
253 /* HP laptop with Broadcom chip */
254 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
255
256 /* Dell laptop with Broadcom chip */
257 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
258
259 /* Dell Wireless 370 and 410 devices */
260 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
261 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
262
263 /* Belkin F8T012 and F8T013 devices */
264 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
265 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
266
267 /* Asus WL-BTD202 device */
268 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
269
270 /* Kensington Bluetooth USB adapter */
271 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
272
273 /* RTX Telecom based adapters with buggy SCO support */
274 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
275 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
276
277 /* CONWISE Technology based adapters with buggy SCO support */
278 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
279
280 /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
281 { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
282
283 /* Digianswer devices */
284 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
285 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
286
287 /* CSR BlueCore Bluetooth Sniffer */
288 { USB_DEVICE(0x0a12, 0x0002),
289 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
290
291 /* Frontline ComProbe Bluetooth Sniffer */
292 { USB_DEVICE(0x16d3, 0x0002),
293 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
294
295 /* Marvell Bluetooth devices */
296 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
297 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
298
299 /* Intel Bluetooth devices */
300 { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
301 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
302 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
303 { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
304
305 /* Other Intel Bluetooth devices */
306 { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
307 .driver_info = BTUSB_IGNORE },
308
309 /* Realtek Bluetooth devices */
310 { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
311 .driver_info = BTUSB_REALTEK },
312
313 /* Additional Realtek 8723AE Bluetooth devices */
314 { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
315 { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
316
317 /* Additional Realtek 8723BE Bluetooth devices */
318 { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
319 { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
320 { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
321 { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
322 { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
323
324 /* Additional Realtek 8821AE Bluetooth devices */
325 { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
326 { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
327 { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
328 { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
329 { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
330
331 { } /* Terminating entry */
332 };
333
334 #define BTUSB_MAX_ISOC_FRAMES 10
335
336 #define BTUSB_INTR_RUNNING 0
337 #define BTUSB_BULK_RUNNING 1
338 #define BTUSB_ISOC_RUNNING 2
339 #define BTUSB_SUSPENDING 3
340 #define BTUSB_DID_ISO_RESUME 4
341 #define BTUSB_BOOTLOADER 5
342 #define BTUSB_DOWNLOADING 6
343 #define BTUSB_FIRMWARE_LOADED 7
344 #define BTUSB_FIRMWARE_FAILED 8
345 #define BTUSB_BOOTING 9
346
347 struct btusb_data {
348 struct hci_dev *hdev;
349 struct usb_device *udev;
350 struct usb_interface *intf;
351 struct usb_interface *isoc;
352
353 unsigned long flags;
354
355 struct work_struct work;
356 struct work_struct waker;
357
358 struct usb_anchor deferred;
359 struct usb_anchor tx_anchor;
360 int tx_in_flight;
361 spinlock_t txlock;
362
363 struct usb_anchor intr_anchor;
364 struct usb_anchor bulk_anchor;
365 struct usb_anchor isoc_anchor;
366 spinlock_t rxlock;
367
368 struct sk_buff *evt_skb;
369 struct sk_buff *acl_skb;
370 struct sk_buff *sco_skb;
371
372 struct usb_endpoint_descriptor *intr_ep;
373 struct usb_endpoint_descriptor *bulk_tx_ep;
374 struct usb_endpoint_descriptor *bulk_rx_ep;
375 struct usb_endpoint_descriptor *isoc_tx_ep;
376 struct usb_endpoint_descriptor *isoc_rx_ep;
377
378 __u8 cmdreq_type;
379 __u8 cmdreq;
380
381 unsigned int sco_num;
382 int isoc_altsetting;
383 int suspend_count;
384
385 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
386 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
387
388 int (*setup_on_usb)(struct hci_dev *hdev);
389 };
390
btusb_free_frags(struct btusb_data * data)391 static inline void btusb_free_frags(struct btusb_data *data)
392 {
393 unsigned long flags;
394
395 spin_lock_irqsave(&data->rxlock, flags);
396
397 kfree_skb(data->evt_skb);
398 data->evt_skb = NULL;
399
400 kfree_skb(data->acl_skb);
401 data->acl_skb = NULL;
402
403 kfree_skb(data->sco_skb);
404 data->sco_skb = NULL;
405
406 spin_unlock_irqrestore(&data->rxlock, flags);
407 }
408
btusb_recv_intr(struct btusb_data * data,void * buffer,int count)409 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
410 {
411 struct sk_buff *skb;
412 int err = 0;
413
414 spin_lock(&data->rxlock);
415 skb = data->evt_skb;
416
417 while (count) {
418 int len;
419
420 if (!skb) {
421 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
422 if (!skb) {
423 err = -ENOMEM;
424 break;
425 }
426
427 bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
428 bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
429 }
430
431 len = min_t(uint, bt_cb(skb)->expect, count);
432 memcpy(skb_put(skb, len), buffer, len);
433
434 count -= len;
435 buffer += len;
436 bt_cb(skb)->expect -= len;
437
438 if (skb->len == HCI_EVENT_HDR_SIZE) {
439 /* Complete event header */
440 bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
441
442 if (skb_tailroom(skb) < bt_cb(skb)->expect) {
443 kfree_skb(skb);
444 skb = NULL;
445
446 err = -EILSEQ;
447 break;
448 }
449 }
450
451 if (bt_cb(skb)->expect == 0) {
452 /* Complete frame */
453 data->recv_event(data->hdev, skb);
454 skb = NULL;
455 }
456 }
457
458 data->evt_skb = skb;
459 spin_unlock(&data->rxlock);
460
461 return err;
462 }
463
btusb_recv_bulk(struct btusb_data * data,void * buffer,int count)464 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
465 {
466 struct sk_buff *skb;
467 int err = 0;
468
469 spin_lock(&data->rxlock);
470 skb = data->acl_skb;
471
472 while (count) {
473 int len;
474
475 if (!skb) {
476 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
477 if (!skb) {
478 err = -ENOMEM;
479 break;
480 }
481
482 bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
483 bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
484 }
485
486 len = min_t(uint, bt_cb(skb)->expect, count);
487 memcpy(skb_put(skb, len), buffer, len);
488
489 count -= len;
490 buffer += len;
491 bt_cb(skb)->expect -= len;
492
493 if (skb->len == HCI_ACL_HDR_SIZE) {
494 __le16 dlen = hci_acl_hdr(skb)->dlen;
495
496 /* Complete ACL header */
497 bt_cb(skb)->expect = __le16_to_cpu(dlen);
498
499 if (skb_tailroom(skb) < bt_cb(skb)->expect) {
500 kfree_skb(skb);
501 skb = NULL;
502
503 err = -EILSEQ;
504 break;
505 }
506 }
507
508 if (bt_cb(skb)->expect == 0) {
509 /* Complete frame */
510 hci_recv_frame(data->hdev, skb);
511 skb = NULL;
512 }
513 }
514
515 data->acl_skb = skb;
516 spin_unlock(&data->rxlock);
517
518 return err;
519 }
520
btusb_recv_isoc(struct btusb_data * data,void * buffer,int count)521 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
522 {
523 struct sk_buff *skb;
524 int err = 0;
525
526 spin_lock(&data->rxlock);
527 skb = data->sco_skb;
528
529 while (count) {
530 int len;
531
532 if (!skb) {
533 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
534 if (!skb) {
535 err = -ENOMEM;
536 break;
537 }
538
539 bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
540 bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
541 }
542
543 len = min_t(uint, bt_cb(skb)->expect, count);
544 memcpy(skb_put(skb, len), buffer, len);
545
546 count -= len;
547 buffer += len;
548 bt_cb(skb)->expect -= len;
549
550 if (skb->len == HCI_SCO_HDR_SIZE) {
551 /* Complete SCO header */
552 bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
553
554 if (skb_tailroom(skb) < bt_cb(skb)->expect) {
555 kfree_skb(skb);
556 skb = NULL;
557
558 err = -EILSEQ;
559 break;
560 }
561 }
562
563 if (bt_cb(skb)->expect == 0) {
564 /* Complete frame */
565 hci_recv_frame(data->hdev, skb);
566 skb = NULL;
567 }
568 }
569
570 data->sco_skb = skb;
571 spin_unlock(&data->rxlock);
572
573 return err;
574 }
575
btusb_intr_complete(struct urb * urb)576 static void btusb_intr_complete(struct urb *urb)
577 {
578 struct hci_dev *hdev = urb->context;
579 struct btusb_data *data = hci_get_drvdata(hdev);
580 int err;
581
582 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
583 urb->actual_length);
584
585 if (!test_bit(HCI_RUNNING, &hdev->flags))
586 return;
587
588 if (urb->status == 0) {
589 hdev->stat.byte_rx += urb->actual_length;
590
591 if (btusb_recv_intr(data, urb->transfer_buffer,
592 urb->actual_length) < 0) {
593 BT_ERR("%s corrupted event packet", hdev->name);
594 hdev->stat.err_rx++;
595 }
596 } else if (urb->status == -ENOENT) {
597 /* Avoid suspend failed when usb_kill_urb */
598 return;
599 }
600
601 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
602 return;
603
604 usb_mark_last_busy(data->udev);
605 usb_anchor_urb(urb, &data->intr_anchor);
606
607 err = usb_submit_urb(urb, GFP_ATOMIC);
608 if (err < 0) {
609 /* -EPERM: urb is being killed;
610 * -ENODEV: device got disconnected */
611 if (err != -EPERM && err != -ENODEV)
612 BT_ERR("%s urb %p failed to resubmit (%d)",
613 hdev->name, urb, -err);
614 usb_unanchor_urb(urb);
615 }
616 }
617
btusb_submit_intr_urb(struct hci_dev * hdev,gfp_t mem_flags)618 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
619 {
620 struct btusb_data *data = hci_get_drvdata(hdev);
621 struct urb *urb;
622 unsigned char *buf;
623 unsigned int pipe;
624 int err, size;
625
626 BT_DBG("%s", hdev->name);
627
628 if (!data->intr_ep)
629 return -ENODEV;
630
631 urb = usb_alloc_urb(0, mem_flags);
632 if (!urb)
633 return -ENOMEM;
634
635 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
636
637 buf = kmalloc(size, mem_flags);
638 if (!buf) {
639 usb_free_urb(urb);
640 return -ENOMEM;
641 }
642
643 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
644
645 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
646 btusb_intr_complete, hdev, data->intr_ep->bInterval);
647
648 urb->transfer_flags |= URB_FREE_BUFFER;
649
650 usb_anchor_urb(urb, &data->intr_anchor);
651
652 err = usb_submit_urb(urb, mem_flags);
653 if (err < 0) {
654 if (err != -EPERM && err != -ENODEV)
655 BT_ERR("%s urb %p submission failed (%d)",
656 hdev->name, urb, -err);
657 usb_unanchor_urb(urb);
658 }
659
660 usb_free_urb(urb);
661
662 return err;
663 }
664
btusb_bulk_complete(struct urb * urb)665 static void btusb_bulk_complete(struct urb *urb)
666 {
667 struct hci_dev *hdev = urb->context;
668 struct btusb_data *data = hci_get_drvdata(hdev);
669 int err;
670
671 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
672 urb->actual_length);
673
674 if (!test_bit(HCI_RUNNING, &hdev->flags))
675 return;
676
677 if (urb->status == 0) {
678 hdev->stat.byte_rx += urb->actual_length;
679
680 if (data->recv_bulk(data, urb->transfer_buffer,
681 urb->actual_length) < 0) {
682 BT_ERR("%s corrupted ACL packet", hdev->name);
683 hdev->stat.err_rx++;
684 }
685 } else if (urb->status == -ENOENT) {
686 /* Avoid suspend failed when usb_kill_urb */
687 return;
688 }
689
690 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
691 return;
692
693 usb_anchor_urb(urb, &data->bulk_anchor);
694 usb_mark_last_busy(data->udev);
695
696 err = usb_submit_urb(urb, GFP_ATOMIC);
697 if (err < 0) {
698 /* -EPERM: urb is being killed;
699 * -ENODEV: device got disconnected */
700 if (err != -EPERM && err != -ENODEV)
701 BT_ERR("%s urb %p failed to resubmit (%d)",
702 hdev->name, urb, -err);
703 usb_unanchor_urb(urb);
704 }
705 }
706
btusb_submit_bulk_urb(struct hci_dev * hdev,gfp_t mem_flags)707 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
708 {
709 struct btusb_data *data = hci_get_drvdata(hdev);
710 struct urb *urb;
711 unsigned char *buf;
712 unsigned int pipe;
713 int err, size = HCI_MAX_FRAME_SIZE;
714
715 BT_DBG("%s", hdev->name);
716
717 if (!data->bulk_rx_ep)
718 return -ENODEV;
719
720 urb = usb_alloc_urb(0, mem_flags);
721 if (!urb)
722 return -ENOMEM;
723
724 buf = kmalloc(size, mem_flags);
725 if (!buf) {
726 usb_free_urb(urb);
727 return -ENOMEM;
728 }
729
730 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
731
732 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
733 btusb_bulk_complete, hdev);
734
735 urb->transfer_flags |= URB_FREE_BUFFER;
736
737 usb_mark_last_busy(data->udev);
738 usb_anchor_urb(urb, &data->bulk_anchor);
739
740 err = usb_submit_urb(urb, mem_flags);
741 if (err < 0) {
742 if (err != -EPERM && err != -ENODEV)
743 BT_ERR("%s urb %p submission failed (%d)",
744 hdev->name, urb, -err);
745 usb_unanchor_urb(urb);
746 }
747
748 usb_free_urb(urb);
749
750 return err;
751 }
752
btusb_isoc_complete(struct urb * urb)753 static void btusb_isoc_complete(struct urb *urb)
754 {
755 struct hci_dev *hdev = urb->context;
756 struct btusb_data *data = hci_get_drvdata(hdev);
757 int i, err;
758
759 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
760 urb->actual_length);
761
762 if (!test_bit(HCI_RUNNING, &hdev->flags))
763 return;
764
765 if (urb->status == 0) {
766 for (i = 0; i < urb->number_of_packets; i++) {
767 unsigned int offset = urb->iso_frame_desc[i].offset;
768 unsigned int length = urb->iso_frame_desc[i].actual_length;
769
770 if (urb->iso_frame_desc[i].status)
771 continue;
772
773 hdev->stat.byte_rx += length;
774
775 if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
776 length) < 0) {
777 BT_ERR("%s corrupted SCO packet", hdev->name);
778 hdev->stat.err_rx++;
779 }
780 }
781 } else if (urb->status == -ENOENT) {
782 /* Avoid suspend failed when usb_kill_urb */
783 return;
784 }
785
786 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
787 return;
788
789 usb_anchor_urb(urb, &data->isoc_anchor);
790
791 err = usb_submit_urb(urb, GFP_ATOMIC);
792 if (err < 0) {
793 /* -EPERM: urb is being killed;
794 * -ENODEV: device got disconnected */
795 if (err != -EPERM && err != -ENODEV)
796 BT_ERR("%s urb %p failed to resubmit (%d)",
797 hdev->name, urb, -err);
798 usb_unanchor_urb(urb);
799 }
800 }
801
__fill_isoc_descriptor(struct urb * urb,int len,int mtu)802 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
803 {
804 int i, offset = 0;
805
806 BT_DBG("len %d mtu %d", len, mtu);
807
808 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
809 i++, offset += mtu, len -= mtu) {
810 urb->iso_frame_desc[i].offset = offset;
811 urb->iso_frame_desc[i].length = mtu;
812 }
813
814 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
815 urb->iso_frame_desc[i].offset = offset;
816 urb->iso_frame_desc[i].length = len;
817 i++;
818 }
819
820 urb->number_of_packets = i;
821 }
822
btusb_submit_isoc_urb(struct hci_dev * hdev,gfp_t mem_flags)823 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
824 {
825 struct btusb_data *data = hci_get_drvdata(hdev);
826 struct urb *urb;
827 unsigned char *buf;
828 unsigned int pipe;
829 int err, size;
830
831 BT_DBG("%s", hdev->name);
832
833 if (!data->isoc_rx_ep)
834 return -ENODEV;
835
836 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
837 if (!urb)
838 return -ENOMEM;
839
840 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
841 BTUSB_MAX_ISOC_FRAMES;
842
843 buf = kmalloc(size, mem_flags);
844 if (!buf) {
845 usb_free_urb(urb);
846 return -ENOMEM;
847 }
848
849 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
850
851 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
852 hdev, data->isoc_rx_ep->bInterval);
853
854 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
855
856 __fill_isoc_descriptor(urb, size,
857 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
858
859 usb_anchor_urb(urb, &data->isoc_anchor);
860
861 err = usb_submit_urb(urb, mem_flags);
862 if (err < 0) {
863 if (err != -EPERM && err != -ENODEV)
864 BT_ERR("%s urb %p submission failed (%d)",
865 hdev->name, urb, -err);
866 usb_unanchor_urb(urb);
867 }
868
869 usb_free_urb(urb);
870
871 return err;
872 }
873
btusb_tx_complete(struct urb * urb)874 static void btusb_tx_complete(struct urb *urb)
875 {
876 struct sk_buff *skb = urb->context;
877 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
878 struct btusb_data *data = hci_get_drvdata(hdev);
879
880 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
881 urb->actual_length);
882
883 if (!test_bit(HCI_RUNNING, &hdev->flags))
884 goto done;
885
886 if (!urb->status)
887 hdev->stat.byte_tx += urb->transfer_buffer_length;
888 else
889 hdev->stat.err_tx++;
890
891 done:
892 spin_lock(&data->txlock);
893 data->tx_in_flight--;
894 spin_unlock(&data->txlock);
895
896 kfree(urb->setup_packet);
897
898 kfree_skb(skb);
899 }
900
btusb_isoc_tx_complete(struct urb * urb)901 static void btusb_isoc_tx_complete(struct urb *urb)
902 {
903 struct sk_buff *skb = urb->context;
904 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
905
906 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
907 urb->actual_length);
908
909 if (!test_bit(HCI_RUNNING, &hdev->flags))
910 goto done;
911
912 if (!urb->status)
913 hdev->stat.byte_tx += urb->transfer_buffer_length;
914 else
915 hdev->stat.err_tx++;
916
917 done:
918 kfree(urb->setup_packet);
919
920 kfree_skb(skb);
921 }
922
btusb_open(struct hci_dev * hdev)923 static int btusb_open(struct hci_dev *hdev)
924 {
925 struct btusb_data *data = hci_get_drvdata(hdev);
926 int err;
927
928 BT_DBG("%s", hdev->name);
929
930 /* Patching USB firmware files prior to starting any URBs of HCI path
931 * It is more safe to use USB bulk channel for downloading USB patch
932 */
933 if (data->setup_on_usb) {
934 err = data->setup_on_usb(hdev);
935 if (err < 0)
936 return err;
937 }
938
939 err = usb_autopm_get_interface(data->intf);
940 if (err < 0)
941 return err;
942
943 data->intf->needs_remote_wakeup = 1;
944
945 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
946 goto done;
947
948 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
949 goto done;
950
951 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
952 if (err < 0)
953 goto failed;
954
955 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
956 if (err < 0) {
957 usb_kill_anchored_urbs(&data->intr_anchor);
958 goto failed;
959 }
960
961 set_bit(BTUSB_BULK_RUNNING, &data->flags);
962 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
963
964 done:
965 usb_autopm_put_interface(data->intf);
966 return 0;
967
968 failed:
969 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
970 clear_bit(HCI_RUNNING, &hdev->flags);
971 usb_autopm_put_interface(data->intf);
972 return err;
973 }
974
btusb_stop_traffic(struct btusb_data * data)975 static void btusb_stop_traffic(struct btusb_data *data)
976 {
977 usb_kill_anchored_urbs(&data->intr_anchor);
978 usb_kill_anchored_urbs(&data->bulk_anchor);
979 usb_kill_anchored_urbs(&data->isoc_anchor);
980 }
981
btusb_close(struct hci_dev * hdev)982 static int btusb_close(struct hci_dev *hdev)
983 {
984 struct btusb_data *data = hci_get_drvdata(hdev);
985 int err;
986
987 BT_DBG("%s", hdev->name);
988
989 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
990 return 0;
991
992 cancel_work_sync(&data->work);
993 cancel_work_sync(&data->waker);
994
995 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
996 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
997 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
998
999 btusb_stop_traffic(data);
1000 btusb_free_frags(data);
1001
1002 err = usb_autopm_get_interface(data->intf);
1003 if (err < 0)
1004 goto failed;
1005
1006 data->intf->needs_remote_wakeup = 0;
1007 usb_autopm_put_interface(data->intf);
1008
1009 failed:
1010 usb_scuttle_anchored_urbs(&data->deferred);
1011 return 0;
1012 }
1013
btusb_flush(struct hci_dev * hdev)1014 static int btusb_flush(struct hci_dev *hdev)
1015 {
1016 struct btusb_data *data = hci_get_drvdata(hdev);
1017
1018 BT_DBG("%s", hdev->name);
1019
1020 usb_kill_anchored_urbs(&data->tx_anchor);
1021 btusb_free_frags(data);
1022
1023 return 0;
1024 }
1025
alloc_ctrl_urb(struct hci_dev * hdev,struct sk_buff * skb)1026 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1027 {
1028 struct btusb_data *data = hci_get_drvdata(hdev);
1029 struct usb_ctrlrequest *dr;
1030 struct urb *urb;
1031 unsigned int pipe;
1032
1033 urb = usb_alloc_urb(0, GFP_KERNEL);
1034 if (!urb)
1035 return ERR_PTR(-ENOMEM);
1036
1037 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1038 if (!dr) {
1039 usb_free_urb(urb);
1040 return ERR_PTR(-ENOMEM);
1041 }
1042
1043 dr->bRequestType = data->cmdreq_type;
1044 dr->bRequest = data->cmdreq;
1045 dr->wIndex = 0;
1046 dr->wValue = 0;
1047 dr->wLength = __cpu_to_le16(skb->len);
1048
1049 pipe = usb_sndctrlpipe(data->udev, 0x00);
1050
1051 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1052 skb->data, skb->len, btusb_tx_complete, skb);
1053
1054 skb->dev = (void *)hdev;
1055
1056 return urb;
1057 }
1058
alloc_bulk_urb(struct hci_dev * hdev,struct sk_buff * skb)1059 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1060 {
1061 struct btusb_data *data = hci_get_drvdata(hdev);
1062 struct urb *urb;
1063 unsigned int pipe;
1064
1065 if (!data->bulk_tx_ep)
1066 return ERR_PTR(-ENODEV);
1067
1068 urb = usb_alloc_urb(0, GFP_KERNEL);
1069 if (!urb)
1070 return ERR_PTR(-ENOMEM);
1071
1072 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1073
1074 usb_fill_bulk_urb(urb, data->udev, pipe,
1075 skb->data, skb->len, btusb_tx_complete, skb);
1076
1077 skb->dev = (void *)hdev;
1078
1079 return urb;
1080 }
1081
alloc_isoc_urb(struct hci_dev * hdev,struct sk_buff * skb)1082 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1083 {
1084 struct btusb_data *data = hci_get_drvdata(hdev);
1085 struct urb *urb;
1086 unsigned int pipe;
1087
1088 if (!data->isoc_tx_ep)
1089 return ERR_PTR(-ENODEV);
1090
1091 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1092 if (!urb)
1093 return ERR_PTR(-ENOMEM);
1094
1095 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1096
1097 usb_fill_int_urb(urb, data->udev, pipe,
1098 skb->data, skb->len, btusb_isoc_tx_complete,
1099 skb, data->isoc_tx_ep->bInterval);
1100
1101 urb->transfer_flags = URB_ISO_ASAP;
1102
1103 __fill_isoc_descriptor(urb, skb->len,
1104 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1105
1106 skb->dev = (void *)hdev;
1107
1108 return urb;
1109 }
1110
submit_tx_urb(struct hci_dev * hdev,struct urb * urb)1111 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1112 {
1113 struct btusb_data *data = hci_get_drvdata(hdev);
1114 int err;
1115
1116 usb_anchor_urb(urb, &data->tx_anchor);
1117
1118 err = usb_submit_urb(urb, GFP_KERNEL);
1119 if (err < 0) {
1120 if (err != -EPERM && err != -ENODEV)
1121 BT_ERR("%s urb %p submission failed (%d)",
1122 hdev->name, urb, -err);
1123 kfree(urb->setup_packet);
1124 usb_unanchor_urb(urb);
1125 } else {
1126 usb_mark_last_busy(data->udev);
1127 }
1128
1129 usb_free_urb(urb);
1130 return err;
1131 }
1132
submit_or_queue_tx_urb(struct hci_dev * hdev,struct urb * urb)1133 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1134 {
1135 struct btusb_data *data = hci_get_drvdata(hdev);
1136 unsigned long flags;
1137 bool suspending;
1138
1139 spin_lock_irqsave(&data->txlock, flags);
1140 suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1141 if (!suspending)
1142 data->tx_in_flight++;
1143 spin_unlock_irqrestore(&data->txlock, flags);
1144
1145 if (!suspending)
1146 return submit_tx_urb(hdev, urb);
1147
1148 usb_anchor_urb(urb, &data->deferred);
1149 schedule_work(&data->waker);
1150
1151 usb_free_urb(urb);
1152 return 0;
1153 }
1154
btusb_send_frame(struct hci_dev * hdev,struct sk_buff * skb)1155 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1156 {
1157 struct urb *urb;
1158
1159 BT_DBG("%s", hdev->name);
1160
1161 if (!test_bit(HCI_RUNNING, &hdev->flags))
1162 return -EBUSY;
1163
1164 switch (bt_cb(skb)->pkt_type) {
1165 case HCI_COMMAND_PKT:
1166 urb = alloc_ctrl_urb(hdev, skb);
1167 if (IS_ERR(urb))
1168 return PTR_ERR(urb);
1169
1170 hdev->stat.cmd_tx++;
1171 return submit_or_queue_tx_urb(hdev, urb);
1172
1173 case HCI_ACLDATA_PKT:
1174 urb = alloc_bulk_urb(hdev, skb);
1175 if (IS_ERR(urb))
1176 return PTR_ERR(urb);
1177
1178 hdev->stat.acl_tx++;
1179 return submit_or_queue_tx_urb(hdev, urb);
1180
1181 case HCI_SCODATA_PKT:
1182 if (hci_conn_num(hdev, SCO_LINK) < 1)
1183 return -ENODEV;
1184
1185 urb = alloc_isoc_urb(hdev, skb);
1186 if (IS_ERR(urb))
1187 return PTR_ERR(urb);
1188
1189 hdev->stat.sco_tx++;
1190 return submit_tx_urb(hdev, urb);
1191 }
1192
1193 return -EILSEQ;
1194 }
1195
btusb_notify(struct hci_dev * hdev,unsigned int evt)1196 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1197 {
1198 struct btusb_data *data = hci_get_drvdata(hdev);
1199
1200 BT_DBG("%s evt %d", hdev->name, evt);
1201
1202 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1203 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1204 schedule_work(&data->work);
1205 }
1206 }
1207
__set_isoc_interface(struct hci_dev * hdev,int altsetting)1208 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1209 {
1210 struct btusb_data *data = hci_get_drvdata(hdev);
1211 struct usb_interface *intf = data->isoc;
1212 struct usb_endpoint_descriptor *ep_desc;
1213 int i, err;
1214
1215 if (!data->isoc)
1216 return -ENODEV;
1217
1218 err = usb_set_interface(data->udev, 1, altsetting);
1219 if (err < 0) {
1220 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1221 return err;
1222 }
1223
1224 data->isoc_altsetting = altsetting;
1225
1226 data->isoc_tx_ep = NULL;
1227 data->isoc_rx_ep = NULL;
1228
1229 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1230 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1231
1232 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1233 data->isoc_tx_ep = ep_desc;
1234 continue;
1235 }
1236
1237 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1238 data->isoc_rx_ep = ep_desc;
1239 continue;
1240 }
1241 }
1242
1243 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1244 BT_ERR("%s invalid SCO descriptors", hdev->name);
1245 return -ENODEV;
1246 }
1247
1248 return 0;
1249 }
1250
btusb_work(struct work_struct * work)1251 static void btusb_work(struct work_struct *work)
1252 {
1253 struct btusb_data *data = container_of(work, struct btusb_data, work);
1254 struct hci_dev *hdev = data->hdev;
1255 int new_alts;
1256 int err;
1257
1258 if (data->sco_num > 0) {
1259 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1260 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1261 if (err < 0) {
1262 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1263 usb_kill_anchored_urbs(&data->isoc_anchor);
1264 return;
1265 }
1266
1267 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1268 }
1269
1270 if (hdev->voice_setting & 0x0020) {
1271 static const int alts[3] = { 2, 4, 5 };
1272
1273 new_alts = alts[data->sco_num - 1];
1274 } else {
1275 new_alts = data->sco_num;
1276 }
1277
1278 if (data->isoc_altsetting != new_alts) {
1279 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1280 usb_kill_anchored_urbs(&data->isoc_anchor);
1281
1282 if (__set_isoc_interface(hdev, new_alts) < 0)
1283 return;
1284 }
1285
1286 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1287 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1288 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1289 else
1290 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1291 }
1292 } else {
1293 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1294 usb_kill_anchored_urbs(&data->isoc_anchor);
1295
1296 __set_isoc_interface(hdev, 0);
1297 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1298 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1299 }
1300 }
1301
btusb_waker(struct work_struct * work)1302 static void btusb_waker(struct work_struct *work)
1303 {
1304 struct btusb_data *data = container_of(work, struct btusb_data, waker);
1305 int err;
1306
1307 err = usb_autopm_get_interface(data->intf);
1308 if (err < 0)
1309 return;
1310
1311 usb_autopm_put_interface(data->intf);
1312 }
1313
btusb_read_local_version(struct hci_dev * hdev)1314 static struct sk_buff *btusb_read_local_version(struct hci_dev *hdev)
1315 {
1316 struct sk_buff *skb;
1317
1318 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1319 HCI_INIT_TIMEOUT);
1320 if (IS_ERR(skb)) {
1321 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1322 hdev->name, PTR_ERR(skb));
1323 return skb;
1324 }
1325
1326 if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1327 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1328 hdev->name);
1329 kfree_skb(skb);
1330 return ERR_PTR(-EIO);
1331 }
1332
1333 return skb;
1334 }
1335
btusb_setup_bcm92035(struct hci_dev * hdev)1336 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1337 {
1338 struct sk_buff *skb;
1339 u8 val = 0x00;
1340
1341 BT_DBG("%s", hdev->name);
1342
1343 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1344 if (IS_ERR(skb))
1345 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1346 else
1347 kfree_skb(skb);
1348
1349 return 0;
1350 }
1351
btusb_setup_csr(struct hci_dev * hdev)1352 static int btusb_setup_csr(struct hci_dev *hdev)
1353 {
1354 struct hci_rp_read_local_version *rp;
1355 struct sk_buff *skb;
1356 int ret;
1357
1358 BT_DBG("%s", hdev->name);
1359
1360 skb = btusb_read_local_version(hdev);
1361 if (IS_ERR(skb))
1362 return -PTR_ERR(skb);
1363
1364 rp = (struct hci_rp_read_local_version *)skb->data;
1365
1366 if (!rp->status) {
1367 if (le16_to_cpu(rp->manufacturer) != 10) {
1368 /* Clear the reset quirk since this is not an actual
1369 * early Bluetooth 1.1 device from CSR.
1370 */
1371 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1372
1373 /* These fake CSR controllers have all a broken
1374 * stored link key handling and so just disable it.
1375 */
1376 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1377 &hdev->quirks);
1378 }
1379 }
1380
1381 ret = -bt_to_errno(rp->status);
1382
1383 kfree_skb(skb);
1384
1385 return ret;
1386 }
1387
1388 #define RTL_FRAG_LEN 252
1389
1390 struct rtl_download_cmd {
1391 __u8 index;
1392 __u8 data[RTL_FRAG_LEN];
1393 } __packed;
1394
1395 struct rtl_download_response {
1396 __u8 status;
1397 __u8 index;
1398 } __packed;
1399
1400 struct rtl_rom_version_evt {
1401 __u8 status;
1402 __u8 version;
1403 } __packed;
1404
1405 struct rtl_epatch_header {
1406 __u8 signature[8];
1407 __le32 fw_version;
1408 __le16 num_patches;
1409 } __packed;
1410
1411 #define RTL_EPATCH_SIGNATURE "Realtech"
1412 #define RTL_ROM_LMP_3499 0x3499
1413 #define RTL_ROM_LMP_8723A 0x1200
1414 #define RTL_ROM_LMP_8723B 0x8723
1415 #define RTL_ROM_LMP_8821A 0x8821
1416 #define RTL_ROM_LMP_8761A 0x8761
1417
rtl_read_rom_version(struct hci_dev * hdev,u8 * version)1418 static int rtl_read_rom_version(struct hci_dev *hdev, u8 *version)
1419 {
1420 struct rtl_rom_version_evt *rom_version;
1421 struct sk_buff *skb;
1422 int ret;
1423
1424 /* Read RTL ROM version command */
1425 skb = __hci_cmd_sync(hdev, 0xfc6d, 0, NULL, HCI_INIT_TIMEOUT);
1426 if (IS_ERR(skb)) {
1427 BT_ERR("%s: Read ROM version failed (%ld)",
1428 hdev->name, PTR_ERR(skb));
1429 return PTR_ERR(skb);
1430 }
1431
1432 if (skb->len != sizeof(*rom_version)) {
1433 BT_ERR("%s: RTL version event length mismatch", hdev->name);
1434 kfree_skb(skb);
1435 return -EIO;
1436 }
1437
1438 rom_version = (struct rtl_rom_version_evt *)skb->data;
1439 BT_INFO("%s: rom_version status=%x version=%x",
1440 hdev->name, rom_version->status, rom_version->version);
1441
1442 ret = rom_version->status;
1443 if (ret == 0)
1444 *version = rom_version->version;
1445
1446 kfree_skb(skb);
1447 return ret;
1448 }
1449
rtl8723b_parse_firmware(struct hci_dev * hdev,u16 lmp_subver,const struct firmware * fw,unsigned char ** _buf)1450 static int rtl8723b_parse_firmware(struct hci_dev *hdev, u16 lmp_subver,
1451 const struct firmware *fw,
1452 unsigned char **_buf)
1453 {
1454 const u8 extension_sig[] = { 0x51, 0x04, 0xfd, 0x77 };
1455 struct rtl_epatch_header *epatch_info;
1456 unsigned char *buf;
1457 int i, ret, len;
1458 size_t min_size;
1459 u8 opcode, length, data, rom_version = 0;
1460 int project_id = -1;
1461 const unsigned char *fwptr, *chip_id_base;
1462 const unsigned char *patch_length_base, *patch_offset_base;
1463 u32 patch_offset = 0;
1464 u16 patch_length, num_patches;
1465 const u16 project_id_to_lmp_subver[] = {
1466 RTL_ROM_LMP_8723A,
1467 RTL_ROM_LMP_8723B,
1468 RTL_ROM_LMP_8821A,
1469 RTL_ROM_LMP_8761A
1470 };
1471
1472 ret = rtl_read_rom_version(hdev, &rom_version);
1473 if (ret)
1474 return -bt_to_errno(ret);
1475
1476 min_size = sizeof(struct rtl_epatch_header) + sizeof(extension_sig) + 3;
1477 if (fw->size < min_size)
1478 return -EINVAL;
1479
1480 fwptr = fw->data + fw->size - sizeof(extension_sig);
1481 if (memcmp(fwptr, extension_sig, sizeof(extension_sig)) != 0) {
1482 BT_ERR("%s: extension section signature mismatch", hdev->name);
1483 return -EINVAL;
1484 }
1485
1486 /* Loop from the end of the firmware parsing instructions, until
1487 * we find an instruction that identifies the "project ID" for the
1488 * hardware supported by this firwmare file.
1489 * Once we have that, we double-check that that project_id is suitable
1490 * for the hardware we are working with.
1491 */
1492 while (fwptr >= fw->data + (sizeof(struct rtl_epatch_header) + 3)) {
1493 opcode = *--fwptr;
1494 length = *--fwptr;
1495 data = *--fwptr;
1496
1497 BT_DBG("check op=%x len=%x data=%x", opcode, length, data);
1498
1499 if (opcode == 0xff) /* EOF */
1500 break;
1501
1502 if (length == 0) {
1503 BT_ERR("%s: found instruction with length 0",
1504 hdev->name);
1505 return -EINVAL;
1506 }
1507
1508 if (opcode == 0 && length == 1) {
1509 project_id = data;
1510 break;
1511 }
1512
1513 fwptr -= length;
1514 }
1515
1516 if (project_id < 0) {
1517 BT_ERR("%s: failed to find version instruction", hdev->name);
1518 return -EINVAL;
1519 }
1520
1521 if (project_id >= ARRAY_SIZE(project_id_to_lmp_subver)) {
1522 BT_ERR("%s: unknown project id %d", hdev->name, project_id);
1523 return -EINVAL;
1524 }
1525
1526 if (lmp_subver != project_id_to_lmp_subver[project_id]) {
1527 BT_ERR("%s: firmware is for %x but this is a %x", hdev->name,
1528 project_id_to_lmp_subver[project_id], lmp_subver);
1529 return -EINVAL;
1530 }
1531
1532 epatch_info = (struct rtl_epatch_header *)fw->data;
1533 if (memcmp(epatch_info->signature, RTL_EPATCH_SIGNATURE, 8) != 0) {
1534 BT_ERR("%s: bad EPATCH signature", hdev->name);
1535 return -EINVAL;
1536 }
1537
1538 num_patches = le16_to_cpu(epatch_info->num_patches);
1539 BT_DBG("fw_version=%x, num_patches=%d",
1540 le32_to_cpu(epatch_info->fw_version), num_patches);
1541
1542 /* After the rtl_epatch_header there is a funky patch metadata section.
1543 * Assuming 2 patches, the layout is:
1544 * ChipID1 ChipID2 PatchLength1 PatchLength2 PatchOffset1 PatchOffset2
1545 *
1546 * Find the right patch for this chip.
1547 */
1548 min_size += 8 * num_patches;
1549 if (fw->size < min_size)
1550 return -EINVAL;
1551
1552 chip_id_base = fw->data + sizeof(struct rtl_epatch_header);
1553 patch_length_base = chip_id_base + (sizeof(u16) * num_patches);
1554 patch_offset_base = patch_length_base + (sizeof(u16) * num_patches);
1555 for (i = 0; i < num_patches; i++) {
1556 u16 chip_id = get_unaligned_le16(chip_id_base +
1557 (i * sizeof(u16)));
1558 if (chip_id == rom_version + 1) {
1559 patch_length = get_unaligned_le16(patch_length_base +
1560 (i * sizeof(u16)));
1561 patch_offset = get_unaligned_le32(patch_offset_base +
1562 (i * sizeof(u32)));
1563 break;
1564 }
1565 }
1566
1567 if (!patch_offset) {
1568 BT_ERR("%s: didn't find patch for chip id %d",
1569 hdev->name, rom_version);
1570 return -EINVAL;
1571 }
1572
1573 BT_DBG("length=%x offset=%x index %d", patch_length, patch_offset, i);
1574 min_size = patch_offset + patch_length;
1575 if (fw->size < min_size)
1576 return -EINVAL;
1577
1578 /* Copy the firmware into a new buffer and write the version at
1579 * the end.
1580 */
1581 len = patch_length;
1582 buf = kmemdup(fw->data + patch_offset, patch_length, GFP_KERNEL);
1583 if (!buf)
1584 return -ENOMEM;
1585
1586 memcpy(buf + patch_length - 4, &epatch_info->fw_version, 4);
1587
1588 *_buf = buf;
1589 return len;
1590 }
1591
rtl_download_firmware(struct hci_dev * hdev,const unsigned char * data,int fw_len)1592 static int rtl_download_firmware(struct hci_dev *hdev,
1593 const unsigned char *data, int fw_len)
1594 {
1595 struct rtl_download_cmd *dl_cmd;
1596 int frag_num = fw_len / RTL_FRAG_LEN + 1;
1597 int frag_len = RTL_FRAG_LEN;
1598 int ret = 0;
1599 int i;
1600
1601 dl_cmd = kmalloc(sizeof(struct rtl_download_cmd), GFP_KERNEL);
1602 if (!dl_cmd)
1603 return -ENOMEM;
1604
1605 for (i = 0; i < frag_num; i++) {
1606 struct rtl_download_response *dl_resp;
1607 struct sk_buff *skb;
1608
1609 BT_DBG("download fw (%d/%d)", i, frag_num);
1610
1611 dl_cmd->index = i;
1612 if (i == (frag_num - 1)) {
1613 dl_cmd->index |= 0x80; /* data end */
1614 frag_len = fw_len % RTL_FRAG_LEN;
1615 }
1616 memcpy(dl_cmd->data, data, frag_len);
1617
1618 /* Send download command */
1619 skb = __hci_cmd_sync(hdev, 0xfc20, frag_len + 1, dl_cmd,
1620 HCI_INIT_TIMEOUT);
1621 if (IS_ERR(skb)) {
1622 BT_ERR("%s: download fw command failed (%ld)",
1623 hdev->name, PTR_ERR(skb));
1624 ret = -PTR_ERR(skb);
1625 goto out;
1626 }
1627
1628 if (skb->len != sizeof(*dl_resp)) {
1629 BT_ERR("%s: download fw event length mismatch",
1630 hdev->name);
1631 kfree_skb(skb);
1632 ret = -EIO;
1633 goto out;
1634 }
1635
1636 dl_resp = (struct rtl_download_response *)skb->data;
1637 if (dl_resp->status != 0) {
1638 kfree_skb(skb);
1639 ret = bt_to_errno(dl_resp->status);
1640 goto out;
1641 }
1642
1643 kfree_skb(skb);
1644 data += RTL_FRAG_LEN;
1645 }
1646
1647 out:
1648 kfree(dl_cmd);
1649 return ret;
1650 }
1651
btusb_setup_rtl8723a(struct hci_dev * hdev)1652 static int btusb_setup_rtl8723a(struct hci_dev *hdev)
1653 {
1654 struct btusb_data *data = dev_get_drvdata(&hdev->dev);
1655 struct usb_device *udev = interface_to_usbdev(data->intf);
1656 const struct firmware *fw;
1657 int ret;
1658
1659 BT_INFO("%s: rtl: loading rtl_bt/rtl8723a_fw.bin", hdev->name);
1660 ret = request_firmware(&fw, "rtl_bt/rtl8723a_fw.bin", &udev->dev);
1661 if (ret < 0) {
1662 BT_ERR("%s: Failed to load rtl_bt/rtl8723a_fw.bin", hdev->name);
1663 return ret;
1664 }
1665
1666 if (fw->size < 8) {
1667 ret = -EINVAL;
1668 goto out;
1669 }
1670
1671 /* Check that the firmware doesn't have the epatch signature
1672 * (which is only for RTL8723B and newer).
1673 */
1674 if (!memcmp(fw->data, RTL_EPATCH_SIGNATURE, 8)) {
1675 BT_ERR("%s: unexpected EPATCH signature!", hdev->name);
1676 ret = -EINVAL;
1677 goto out;
1678 }
1679
1680 ret = rtl_download_firmware(hdev, fw->data, fw->size);
1681
1682 out:
1683 release_firmware(fw);
1684 return ret;
1685 }
1686
btusb_setup_rtl8723b(struct hci_dev * hdev,u16 lmp_subver,const char * fw_name)1687 static int btusb_setup_rtl8723b(struct hci_dev *hdev, u16 lmp_subver,
1688 const char *fw_name)
1689 {
1690 struct btusb_data *data = dev_get_drvdata(&hdev->dev);
1691 struct usb_device *udev = interface_to_usbdev(data->intf);
1692 unsigned char *fw_data = NULL;
1693 const struct firmware *fw;
1694 int ret;
1695
1696 BT_INFO("%s: rtl: loading %s", hdev->name, fw_name);
1697 ret = request_firmware(&fw, fw_name, &udev->dev);
1698 if (ret < 0) {
1699 BT_ERR("%s: Failed to load %s", hdev->name, fw_name);
1700 return ret;
1701 }
1702
1703 ret = rtl8723b_parse_firmware(hdev, lmp_subver, fw, &fw_data);
1704 if (ret < 0)
1705 goto out;
1706
1707 ret = rtl_download_firmware(hdev, fw_data, ret);
1708 kfree(fw_data);
1709 if (ret < 0)
1710 goto out;
1711
1712 out:
1713 release_firmware(fw);
1714 return ret;
1715 }
1716
btusb_setup_realtek(struct hci_dev * hdev)1717 static int btusb_setup_realtek(struct hci_dev *hdev)
1718 {
1719 struct sk_buff *skb;
1720 struct hci_rp_read_local_version *resp;
1721 u16 lmp_subver;
1722
1723 skb = btusb_read_local_version(hdev);
1724 if (IS_ERR(skb))
1725 return -PTR_ERR(skb);
1726
1727 resp = (struct hci_rp_read_local_version *)skb->data;
1728 BT_INFO("%s: rtl: examining hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1729 "lmp_subver=%04x", hdev->name, resp->hci_ver, resp->hci_rev,
1730 resp->lmp_ver, resp->lmp_subver);
1731
1732 lmp_subver = le16_to_cpu(resp->lmp_subver);
1733 kfree_skb(skb);
1734
1735 /* Match a set of subver values that correspond to stock firmware,
1736 * which is not compatible with standard btusb.
1737 * If matched, upload an alternative firmware that does conform to
1738 * standard btusb. Once that firmware is uploaded, the subver changes
1739 * to a different value.
1740 */
1741 switch (lmp_subver) {
1742 case RTL_ROM_LMP_8723A:
1743 case RTL_ROM_LMP_3499:
1744 return btusb_setup_rtl8723a(hdev);
1745 case RTL_ROM_LMP_8723B:
1746 return btusb_setup_rtl8723b(hdev, lmp_subver,
1747 "rtl_bt/rtl8723b_fw.bin");
1748 case RTL_ROM_LMP_8821A:
1749 return btusb_setup_rtl8723b(hdev, lmp_subver,
1750 "rtl_bt/rtl8821a_fw.bin");
1751 case RTL_ROM_LMP_8761A:
1752 return btusb_setup_rtl8723b(hdev, lmp_subver,
1753 "rtl_bt/rtl8761a_fw.bin");
1754 default:
1755 BT_INFO("rtl: assuming no firmware upload needed.");
1756 return 0;
1757 }
1758 }
1759
btusb_setup_intel_get_fw(struct hci_dev * hdev,struct intel_version * ver)1760 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1761 struct intel_version *ver)
1762 {
1763 const struct firmware *fw;
1764 char fwname[64];
1765 int ret;
1766
1767 snprintf(fwname, sizeof(fwname),
1768 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1769 ver->hw_platform, ver->hw_variant, ver->hw_revision,
1770 ver->fw_variant, ver->fw_revision, ver->fw_build_num,
1771 ver->fw_build_ww, ver->fw_build_yy);
1772
1773 ret = request_firmware(&fw, fwname, &hdev->dev);
1774 if (ret < 0) {
1775 if (ret == -EINVAL) {
1776 BT_ERR("%s Intel firmware file request failed (%d)",
1777 hdev->name, ret);
1778 return NULL;
1779 }
1780
1781 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1782 hdev->name, fwname, ret);
1783
1784 /* If the correct firmware patch file is not found, use the
1785 * default firmware patch file instead
1786 */
1787 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1788 ver->hw_platform, ver->hw_variant);
1789 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1790 BT_ERR("%s failed to open default Intel fw file: %s",
1791 hdev->name, fwname);
1792 return NULL;
1793 }
1794 }
1795
1796 BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1797
1798 return fw;
1799 }
1800
btusb_setup_intel_patching(struct hci_dev * hdev,const struct firmware * fw,const u8 ** fw_ptr,int * disable_patch)1801 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1802 const struct firmware *fw,
1803 const u8 **fw_ptr, int *disable_patch)
1804 {
1805 struct sk_buff *skb;
1806 struct hci_command_hdr *cmd;
1807 const u8 *cmd_param;
1808 struct hci_event_hdr *evt = NULL;
1809 const u8 *evt_param = NULL;
1810 int remain = fw->size - (*fw_ptr - fw->data);
1811
1812 /* The first byte indicates the types of the patch command or event.
1813 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1814 * in the current firmware buffer doesn't start with 0x01 or
1815 * the size of remain buffer is smaller than HCI command header,
1816 * the firmware file is corrupted and it should stop the patching
1817 * process.
1818 */
1819 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1820 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1821 return -EINVAL;
1822 }
1823 (*fw_ptr)++;
1824 remain--;
1825
1826 cmd = (struct hci_command_hdr *)(*fw_ptr);
1827 *fw_ptr += sizeof(*cmd);
1828 remain -= sizeof(*cmd);
1829
1830 /* Ensure that the remain firmware data is long enough than the length
1831 * of command parameter. If not, the firmware file is corrupted.
1832 */
1833 if (remain < cmd->plen) {
1834 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1835 return -EFAULT;
1836 }
1837
1838 /* If there is a command that loads a patch in the firmware
1839 * file, then enable the patch upon success, otherwise just
1840 * disable the manufacturer mode, for example patch activation
1841 * is not required when the default firmware patch file is used
1842 * because there are no patch data to load.
1843 */
1844 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1845 *disable_patch = 0;
1846
1847 cmd_param = *fw_ptr;
1848 *fw_ptr += cmd->plen;
1849 remain -= cmd->plen;
1850
1851 /* This reads the expected events when the above command is sent to the
1852 * device. Some vendor commands expects more than one events, for
1853 * example command status event followed by vendor specific event.
1854 * For this case, it only keeps the last expected event. so the command
1855 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1856 * last expected event.
1857 */
1858 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1859 (*fw_ptr)++;
1860 remain--;
1861
1862 evt = (struct hci_event_hdr *)(*fw_ptr);
1863 *fw_ptr += sizeof(*evt);
1864 remain -= sizeof(*evt);
1865
1866 if (remain < evt->plen) {
1867 BT_ERR("%s Intel fw corrupted: invalid evt len",
1868 hdev->name);
1869 return -EFAULT;
1870 }
1871
1872 evt_param = *fw_ptr;
1873 *fw_ptr += evt->plen;
1874 remain -= evt->plen;
1875 }
1876
1877 /* Every HCI commands in the firmware file has its correspond event.
1878 * If event is not found or remain is smaller than zero, the firmware
1879 * file is corrupted.
1880 */
1881 if (!evt || !evt_param || remain < 0) {
1882 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1883 return -EFAULT;
1884 }
1885
1886 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1887 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1888 if (IS_ERR(skb)) {
1889 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1890 hdev->name, cmd->opcode, PTR_ERR(skb));
1891 return PTR_ERR(skb);
1892 }
1893
1894 /* It ensures that the returned event matches the event data read from
1895 * the firmware file. At fist, it checks the length and then
1896 * the contents of the event.
1897 */
1898 if (skb->len != evt->plen) {
1899 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1900 le16_to_cpu(cmd->opcode));
1901 kfree_skb(skb);
1902 return -EFAULT;
1903 }
1904
1905 if (memcmp(skb->data, evt_param, evt->plen)) {
1906 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1907 hdev->name, le16_to_cpu(cmd->opcode));
1908 kfree_skb(skb);
1909 return -EFAULT;
1910 }
1911 kfree_skb(skb);
1912
1913 return 0;
1914 }
1915
btusb_setup_intel(struct hci_dev * hdev)1916 static int btusb_setup_intel(struct hci_dev *hdev)
1917 {
1918 struct sk_buff *skb;
1919 const struct firmware *fw;
1920 const u8 *fw_ptr;
1921 int disable_patch;
1922 struct intel_version *ver;
1923
1924 const u8 mfg_enable[] = { 0x01, 0x00 };
1925 const u8 mfg_disable[] = { 0x00, 0x00 };
1926 const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1927 const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1928
1929 BT_DBG("%s", hdev->name);
1930
1931 /* The controller has a bug with the first HCI command sent to it
1932 * returning number of completed commands as zero. This would stall the
1933 * command processing in the Bluetooth core.
1934 *
1935 * As a workaround, send HCI Reset command first which will reset the
1936 * number of completed commands and allow normal command processing
1937 * from now on.
1938 */
1939 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1940 if (IS_ERR(skb)) {
1941 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1942 hdev->name, PTR_ERR(skb));
1943 return PTR_ERR(skb);
1944 }
1945 kfree_skb(skb);
1946
1947 /* Read Intel specific controller version first to allow selection of
1948 * which firmware file to load.
1949 *
1950 * The returned information are hardware variant and revision plus
1951 * firmware variant, revision and build number.
1952 */
1953 skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1954 if (IS_ERR(skb)) {
1955 BT_ERR("%s reading Intel fw version command failed (%ld)",
1956 hdev->name, PTR_ERR(skb));
1957 return PTR_ERR(skb);
1958 }
1959
1960 if (skb->len != sizeof(*ver)) {
1961 BT_ERR("%s Intel version event length mismatch", hdev->name);
1962 kfree_skb(skb);
1963 return -EIO;
1964 }
1965
1966 ver = (struct intel_version *)skb->data;
1967 if (ver->status) {
1968 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1969 ver->status);
1970 kfree_skb(skb);
1971 return -bt_to_errno(ver->status);
1972 }
1973
1974 BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1975 hdev->name, ver->hw_platform, ver->hw_variant,
1976 ver->hw_revision, ver->fw_variant, ver->fw_revision,
1977 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1978 ver->fw_patch_num);
1979
1980 /* fw_patch_num indicates the version of patch the device currently
1981 * have. If there is no patch data in the device, it is always 0x00.
1982 * So, if it is other than 0x00, no need to patch the deivce again.
1983 */
1984 if (ver->fw_patch_num) {
1985 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1986 hdev->name, ver->fw_patch_num);
1987 kfree_skb(skb);
1988 btintel_check_bdaddr(hdev);
1989 return 0;
1990 }
1991
1992 /* Opens the firmware patch file based on the firmware version read
1993 * from the controller. If it fails to open the matching firmware
1994 * patch file, it tries to open the default firmware patch file.
1995 * If no patch file is found, allow the device to operate without
1996 * a patch.
1997 */
1998 fw = btusb_setup_intel_get_fw(hdev, ver);
1999 if (!fw) {
2000 kfree_skb(skb);
2001 btintel_check_bdaddr(hdev);
2002 return 0;
2003 }
2004 fw_ptr = fw->data;
2005
2006 kfree_skb(skb);
2007
2008 /* This Intel specific command enables the manufacturer mode of the
2009 * controller.
2010 *
2011 * Only while this mode is enabled, the driver can download the
2012 * firmware patch data and configuration parameters.
2013 */
2014 skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
2015 if (IS_ERR(skb)) {
2016 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
2017 hdev->name, PTR_ERR(skb));
2018 release_firmware(fw);
2019 return PTR_ERR(skb);
2020 }
2021
2022 if (skb->data[0]) {
2023 u8 evt_status = skb->data[0];
2024
2025 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
2026 hdev->name, evt_status);
2027 kfree_skb(skb);
2028 release_firmware(fw);
2029 return -bt_to_errno(evt_status);
2030 }
2031 kfree_skb(skb);
2032
2033 disable_patch = 1;
2034
2035 /* The firmware data file consists of list of Intel specific HCI
2036 * commands and its expected events. The first byte indicates the
2037 * type of the message, either HCI command or HCI event.
2038 *
2039 * It reads the command and its expected event from the firmware file,
2040 * and send to the controller. Once __hci_cmd_sync_ev() returns,
2041 * the returned event is compared with the event read from the firmware
2042 * file and it will continue until all the messages are downloaded to
2043 * the controller.
2044 *
2045 * Once the firmware patching is completed successfully,
2046 * the manufacturer mode is disabled with reset and activating the
2047 * downloaded patch.
2048 *
2049 * If the firmware patching fails, the manufacturer mode is
2050 * disabled with reset and deactivating the patch.
2051 *
2052 * If the default patch file is used, no reset is done when disabling
2053 * the manufacturer.
2054 */
2055 while (fw->size > fw_ptr - fw->data) {
2056 int ret;
2057
2058 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
2059 &disable_patch);
2060 if (ret < 0)
2061 goto exit_mfg_deactivate;
2062 }
2063
2064 release_firmware(fw);
2065
2066 if (disable_patch)
2067 goto exit_mfg_disable;
2068
2069 /* Patching completed successfully and disable the manufacturer mode
2070 * with reset and activate the downloaded firmware patches.
2071 */
2072 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
2073 mfg_reset_activate, HCI_INIT_TIMEOUT);
2074 if (IS_ERR(skb)) {
2075 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
2076 hdev->name, PTR_ERR(skb));
2077 return PTR_ERR(skb);
2078 }
2079 kfree_skb(skb);
2080
2081 BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
2082 hdev->name);
2083
2084 btintel_check_bdaddr(hdev);
2085 return 0;
2086
2087 exit_mfg_disable:
2088 /* Disable the manufacturer mode without reset */
2089 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
2090 HCI_INIT_TIMEOUT);
2091 if (IS_ERR(skb)) {
2092 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
2093 hdev->name, PTR_ERR(skb));
2094 return PTR_ERR(skb);
2095 }
2096 kfree_skb(skb);
2097
2098 BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
2099
2100 btintel_check_bdaddr(hdev);
2101 return 0;
2102
2103 exit_mfg_deactivate:
2104 release_firmware(fw);
2105
2106 /* Patching failed. Disable the manufacturer mode with reset and
2107 * deactivate the downloaded firmware patches.
2108 */
2109 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
2110 mfg_reset_deactivate, HCI_INIT_TIMEOUT);
2111 if (IS_ERR(skb)) {
2112 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
2113 hdev->name, PTR_ERR(skb));
2114 return PTR_ERR(skb);
2115 }
2116 kfree_skb(skb);
2117
2118 BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
2119 hdev->name);
2120
2121 btintel_check_bdaddr(hdev);
2122 return 0;
2123 }
2124
inject_cmd_complete(struct hci_dev * hdev,__u16 opcode)2125 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
2126 {
2127 struct sk_buff *skb;
2128 struct hci_event_hdr *hdr;
2129 struct hci_ev_cmd_complete *evt;
2130
2131 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
2132 if (!skb)
2133 return -ENOMEM;
2134
2135 hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
2136 hdr->evt = HCI_EV_CMD_COMPLETE;
2137 hdr->plen = sizeof(*evt) + 1;
2138
2139 evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
2140 evt->ncmd = 0x01;
2141 evt->opcode = cpu_to_le16(opcode);
2142
2143 *skb_put(skb, 1) = 0x00;
2144
2145 bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
2146
2147 return hci_recv_frame(hdev, skb);
2148 }
2149
btusb_recv_bulk_intel(struct btusb_data * data,void * buffer,int count)2150 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
2151 int count)
2152 {
2153 /* When the device is in bootloader mode, then it can send
2154 * events via the bulk endpoint. These events are treated the
2155 * same way as the ones received from the interrupt endpoint.
2156 */
2157 if (test_bit(BTUSB_BOOTLOADER, &data->flags))
2158 return btusb_recv_intr(data, buffer, count);
2159
2160 return btusb_recv_bulk(data, buffer, count);
2161 }
2162
btusb_intel_bootup(struct btusb_data * data,const void * ptr,unsigned int len)2163 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
2164 unsigned int len)
2165 {
2166 const struct intel_bootup *evt = ptr;
2167
2168 if (len != sizeof(*evt))
2169 return;
2170
2171 if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
2172 smp_mb__after_atomic();
2173 wake_up_bit(&data->flags, BTUSB_BOOTING);
2174 }
2175 }
2176
btusb_intel_secure_send_result(struct btusb_data * data,const void * ptr,unsigned int len)2177 static void btusb_intel_secure_send_result(struct btusb_data *data,
2178 const void *ptr, unsigned int len)
2179 {
2180 const struct intel_secure_send_result *evt = ptr;
2181
2182 if (len != sizeof(*evt))
2183 return;
2184
2185 if (evt->result)
2186 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
2187
2188 if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
2189 test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
2190 smp_mb__after_atomic();
2191 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
2192 }
2193 }
2194
btusb_recv_event_intel(struct hci_dev * hdev,struct sk_buff * skb)2195 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2196 {
2197 struct btusb_data *data = hci_get_drvdata(hdev);
2198
2199 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2200 struct hci_event_hdr *hdr = (void *)skb->data;
2201
2202 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2203 hdr->plen > 0) {
2204 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2205 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2206
2207 switch (skb->data[2]) {
2208 case 0x02:
2209 /* When switching to the operational firmware
2210 * the device sends a vendor specific event
2211 * indicating that the bootup completed.
2212 */
2213 btusb_intel_bootup(data, ptr, len);
2214 break;
2215 case 0x06:
2216 /* When the firmware loading completes the
2217 * device sends out a vendor specific event
2218 * indicating the result of the firmware
2219 * loading.
2220 */
2221 btusb_intel_secure_send_result(data, ptr, len);
2222 break;
2223 }
2224 }
2225 }
2226
2227 return hci_recv_frame(hdev, skb);
2228 }
2229
btusb_send_frame_intel(struct hci_dev * hdev,struct sk_buff * skb)2230 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2231 {
2232 struct btusb_data *data = hci_get_drvdata(hdev);
2233 struct urb *urb;
2234
2235 BT_DBG("%s", hdev->name);
2236
2237 if (!test_bit(HCI_RUNNING, &hdev->flags))
2238 return -EBUSY;
2239
2240 switch (bt_cb(skb)->pkt_type) {
2241 case HCI_COMMAND_PKT:
2242 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2243 struct hci_command_hdr *cmd = (void *)skb->data;
2244 __u16 opcode = le16_to_cpu(cmd->opcode);
2245
2246 /* When in bootloader mode and the command 0xfc09
2247 * is received, it needs to be send down the
2248 * bulk endpoint. So allocate a bulk URB instead.
2249 */
2250 if (opcode == 0xfc09)
2251 urb = alloc_bulk_urb(hdev, skb);
2252 else
2253 urb = alloc_ctrl_urb(hdev, skb);
2254
2255 /* When the 0xfc01 command is issued to boot into
2256 * the operational firmware, it will actually not
2257 * send a command complete event. To keep the flow
2258 * control working inject that event here.
2259 */
2260 if (opcode == 0xfc01)
2261 inject_cmd_complete(hdev, opcode);
2262 } else {
2263 urb = alloc_ctrl_urb(hdev, skb);
2264 }
2265 if (IS_ERR(urb))
2266 return PTR_ERR(urb);
2267
2268 hdev->stat.cmd_tx++;
2269 return submit_or_queue_tx_urb(hdev, urb);
2270
2271 case HCI_ACLDATA_PKT:
2272 urb = alloc_bulk_urb(hdev, skb);
2273 if (IS_ERR(urb))
2274 return PTR_ERR(urb);
2275
2276 hdev->stat.acl_tx++;
2277 return submit_or_queue_tx_urb(hdev, urb);
2278
2279 case HCI_SCODATA_PKT:
2280 if (hci_conn_num(hdev, SCO_LINK) < 1)
2281 return -ENODEV;
2282
2283 urb = alloc_isoc_urb(hdev, skb);
2284 if (IS_ERR(urb))
2285 return PTR_ERR(urb);
2286
2287 hdev->stat.sco_tx++;
2288 return submit_tx_urb(hdev, urb);
2289 }
2290
2291 return -EILSEQ;
2292 }
2293
btusb_intel_secure_send(struct hci_dev * hdev,u8 fragment_type,u32 plen,const void * param)2294 static int btusb_intel_secure_send(struct hci_dev *hdev, u8 fragment_type,
2295 u32 plen, const void *param)
2296 {
2297 while (plen > 0) {
2298 struct sk_buff *skb;
2299 u8 cmd_param[253], fragment_len = (plen > 252) ? 252 : plen;
2300
2301 cmd_param[0] = fragment_type;
2302 memcpy(cmd_param + 1, param, fragment_len);
2303
2304 skb = __hci_cmd_sync(hdev, 0xfc09, fragment_len + 1,
2305 cmd_param, HCI_INIT_TIMEOUT);
2306 if (IS_ERR(skb))
2307 return PTR_ERR(skb);
2308
2309 kfree_skb(skb);
2310
2311 plen -= fragment_len;
2312 param += fragment_len;
2313 }
2314
2315 return 0;
2316 }
2317
btusb_intel_version_info(struct hci_dev * hdev,struct intel_version * ver)2318 static void btusb_intel_version_info(struct hci_dev *hdev,
2319 struct intel_version *ver)
2320 {
2321 const char *variant;
2322
2323 switch (ver->fw_variant) {
2324 case 0x06:
2325 variant = "Bootloader";
2326 break;
2327 case 0x23:
2328 variant = "Firmware";
2329 break;
2330 default:
2331 return;
2332 }
2333
2334 BT_INFO("%s: %s revision %u.%u build %u week %u %u", hdev->name,
2335 variant, ver->fw_revision >> 4, ver->fw_revision & 0x0f,
2336 ver->fw_build_num, ver->fw_build_ww, 2000 + ver->fw_build_yy);
2337 }
2338
btusb_setup_intel_new(struct hci_dev * hdev)2339 static int btusb_setup_intel_new(struct hci_dev *hdev)
2340 {
2341 static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
2342 0x00, 0x08, 0x04, 0x00 };
2343 struct btusb_data *data = hci_get_drvdata(hdev);
2344 struct sk_buff *skb;
2345 struct intel_version *ver;
2346 struct intel_boot_params *params;
2347 const struct firmware *fw;
2348 const u8 *fw_ptr;
2349 u32 frag_len;
2350 char fwname[64];
2351 ktime_t calltime, delta, rettime;
2352 unsigned long long duration;
2353 int err;
2354
2355 BT_DBG("%s", hdev->name);
2356
2357 calltime = ktime_get();
2358
2359 /* Read the Intel version information to determine if the device
2360 * is in bootloader mode or if it already has operational firmware
2361 * loaded.
2362 */
2363 skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
2364 if (IS_ERR(skb)) {
2365 BT_ERR("%s: Reading Intel version information failed (%ld)",
2366 hdev->name, PTR_ERR(skb));
2367 return PTR_ERR(skb);
2368 }
2369
2370 if (skb->len != sizeof(*ver)) {
2371 BT_ERR("%s: Intel version event size mismatch", hdev->name);
2372 kfree_skb(skb);
2373 return -EILSEQ;
2374 }
2375
2376 ver = (struct intel_version *)skb->data;
2377 if (ver->status) {
2378 BT_ERR("%s: Intel version command failure (%02x)",
2379 hdev->name, ver->status);
2380 err = -bt_to_errno(ver->status);
2381 kfree_skb(skb);
2382 return err;
2383 }
2384
2385 /* The hardware platform number has a fixed value of 0x37 and
2386 * for now only accept this single value.
2387 */
2388 if (ver->hw_platform != 0x37) {
2389 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
2390 hdev->name, ver->hw_platform);
2391 kfree_skb(skb);
2392 return -EINVAL;
2393 }
2394
2395 /* At the moment only the hardware variant iBT 3.0 (LnP/SfP) is
2396 * supported by this firmware loading method. This check has been
2397 * put in place to ensure correct forward compatibility options
2398 * when newer hardware variants come along.
2399 */
2400 if (ver->hw_variant != 0x0b) {
2401 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
2402 hdev->name, ver->hw_variant);
2403 kfree_skb(skb);
2404 return -EINVAL;
2405 }
2406
2407 btusb_intel_version_info(hdev, ver);
2408
2409 /* The firmware variant determines if the device is in bootloader
2410 * mode or is running operational firmware. The value 0x06 identifies
2411 * the bootloader and the value 0x23 identifies the operational
2412 * firmware.
2413 *
2414 * When the operational firmware is already present, then only
2415 * the check for valid Bluetooth device address is needed. This
2416 * determines if the device will be added as configured or
2417 * unconfigured controller.
2418 *
2419 * It is not possible to use the Secure Boot Parameters in this
2420 * case since that command is only available in bootloader mode.
2421 */
2422 if (ver->fw_variant == 0x23) {
2423 kfree_skb(skb);
2424 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2425 btintel_check_bdaddr(hdev);
2426 return 0;
2427 }
2428
2429 /* If the device is not in bootloader mode, then the only possible
2430 * choice is to return an error and abort the device initialization.
2431 */
2432 if (ver->fw_variant != 0x06) {
2433 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2434 hdev->name, ver->fw_variant);
2435 kfree_skb(skb);
2436 return -ENODEV;
2437 }
2438
2439 kfree_skb(skb);
2440
2441 /* Read the secure boot parameters to identify the operating
2442 * details of the bootloader.
2443 */
2444 skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2445 if (IS_ERR(skb)) {
2446 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2447 hdev->name, PTR_ERR(skb));
2448 return PTR_ERR(skb);
2449 }
2450
2451 if (skb->len != sizeof(*params)) {
2452 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2453 kfree_skb(skb);
2454 return -EILSEQ;
2455 }
2456
2457 params = (struct intel_boot_params *)skb->data;
2458 if (params->status) {
2459 BT_ERR("%s: Intel boot parameters command failure (%02x)",
2460 hdev->name, params->status);
2461 err = -bt_to_errno(params->status);
2462 kfree_skb(skb);
2463 return err;
2464 }
2465
2466 BT_INFO("%s: Device revision is %u", hdev->name,
2467 le16_to_cpu(params->dev_revid));
2468
2469 BT_INFO("%s: Secure boot is %s", hdev->name,
2470 params->secure_boot ? "enabled" : "disabled");
2471
2472 BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2473 params->min_fw_build_nn, params->min_fw_build_cw,
2474 2000 + params->min_fw_build_yy);
2475
2476 /* It is required that every single firmware fragment is acknowledged
2477 * with a command complete event. If the boot parameters indicate
2478 * that this bootloader does not send them, then abort the setup.
2479 */
2480 if (params->limited_cce != 0x00) {
2481 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2482 hdev->name, params->limited_cce);
2483 kfree_skb(skb);
2484 return -EINVAL;
2485 }
2486
2487 /* If the OTP has no valid Bluetooth device address, then there will
2488 * also be no valid address for the operational firmware.
2489 */
2490 if (!bacmp(¶ms->otp_bdaddr, BDADDR_ANY)) {
2491 BT_INFO("%s: No device address configured", hdev->name);
2492 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2493 }
2494
2495 /* With this Intel bootloader only the hardware variant and device
2496 * revision information are used to select the right firmware.
2497 *
2498 * Currently this bootloader support is limited to hardware variant
2499 * iBT 3.0 (LnP/SfP) which is identified by the value 11 (0x0b).
2500 */
2501 snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.sfi",
2502 le16_to_cpu(params->dev_revid));
2503
2504 err = request_firmware(&fw, fwname, &hdev->dev);
2505 if (err < 0) {
2506 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2507 hdev->name, err);
2508 kfree_skb(skb);
2509 return err;
2510 }
2511
2512 BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2513
2514 kfree_skb(skb);
2515
2516 if (fw->size < 644) {
2517 BT_ERR("%s: Invalid size of firmware file (%zu)",
2518 hdev->name, fw->size);
2519 err = -EBADF;
2520 goto done;
2521 }
2522
2523 set_bit(BTUSB_DOWNLOADING, &data->flags);
2524
2525 /* Start the firmware download transaction with the Init fragment
2526 * represented by the 128 bytes of CSS header.
2527 */
2528 err = btusb_intel_secure_send(hdev, 0x00, 128, fw->data);
2529 if (err < 0) {
2530 BT_ERR("%s: Failed to send firmware header (%d)",
2531 hdev->name, err);
2532 goto done;
2533 }
2534
2535 /* Send the 256 bytes of public key information from the firmware
2536 * as the PKey fragment.
2537 */
2538 err = btusb_intel_secure_send(hdev, 0x03, 256, fw->data + 128);
2539 if (err < 0) {
2540 BT_ERR("%s: Failed to send firmware public key (%d)",
2541 hdev->name, err);
2542 goto done;
2543 }
2544
2545 /* Send the 256 bytes of signature information from the firmware
2546 * as the Sign fragment.
2547 */
2548 err = btusb_intel_secure_send(hdev, 0x02, 256, fw->data + 388);
2549 if (err < 0) {
2550 BT_ERR("%s: Failed to send firmware signature (%d)",
2551 hdev->name, err);
2552 goto done;
2553 }
2554
2555 fw_ptr = fw->data + 644;
2556 frag_len = 0;
2557
2558 while (fw_ptr - fw->data < fw->size) {
2559 struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
2560
2561 frag_len += sizeof(*cmd) + cmd->plen;
2562
2563 /* The paramter length of the secure send command requires
2564 * a 4 byte alignment. It happens so that the firmware file
2565 * contains proper Intel_NOP commands to align the fragments
2566 * as needed.
2567 *
2568 * Send set of commands with 4 byte alignment from the
2569 * firmware data buffer as a single Data fragement.
2570 */
2571 if (!(frag_len % 4)) {
2572 err = btusb_intel_secure_send(hdev, 0x01, frag_len,
2573 fw_ptr);
2574 if (err < 0) {
2575 BT_ERR("%s: Failed to send firmware data (%d)",
2576 hdev->name, err);
2577 goto done;
2578 }
2579
2580 fw_ptr += frag_len;
2581 frag_len = 0;
2582 }
2583 }
2584
2585 set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2586
2587 BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2588
2589 /* Before switching the device into operational mode and with that
2590 * booting the loaded firmware, wait for the bootloader notification
2591 * that all fragments have been successfully received.
2592 *
2593 * When the event processing receives the notification, then the
2594 * BTUSB_DOWNLOADING flag will be cleared.
2595 *
2596 * The firmware loading should not take longer than 5 seconds
2597 * and thus just timeout if that happens and fail the setup
2598 * of this device.
2599 */
2600 err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2601 TASK_INTERRUPTIBLE,
2602 msecs_to_jiffies(5000));
2603 if (err == 1) {
2604 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2605 err = -EINTR;
2606 goto done;
2607 }
2608
2609 if (err) {
2610 BT_ERR("%s: Firmware loading timeout", hdev->name);
2611 err = -ETIMEDOUT;
2612 goto done;
2613 }
2614
2615 if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2616 BT_ERR("%s: Firmware loading failed", hdev->name);
2617 err = -ENOEXEC;
2618 goto done;
2619 }
2620
2621 rettime = ktime_get();
2622 delta = ktime_sub(rettime, calltime);
2623 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2624
2625 BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2626
2627 done:
2628 release_firmware(fw);
2629
2630 if (err < 0)
2631 return err;
2632
2633 calltime = ktime_get();
2634
2635 set_bit(BTUSB_BOOTING, &data->flags);
2636
2637 skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2638 HCI_INIT_TIMEOUT);
2639 if (IS_ERR(skb))
2640 return PTR_ERR(skb);
2641
2642 kfree_skb(skb);
2643
2644 /* The bootloader will not indicate when the device is ready. This
2645 * is done by the operational firmware sending bootup notification.
2646 *
2647 * Booting into operational firmware should not take longer than
2648 * 1 second. However if that happens, then just fail the setup
2649 * since something went wrong.
2650 */
2651 BT_INFO("%s: Waiting for device to boot", hdev->name);
2652
2653 err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2654 TASK_INTERRUPTIBLE,
2655 msecs_to_jiffies(1000));
2656
2657 if (err == 1) {
2658 BT_ERR("%s: Device boot interrupted", hdev->name);
2659 return -EINTR;
2660 }
2661
2662 if (err) {
2663 BT_ERR("%s: Device boot timeout", hdev->name);
2664 return -ETIMEDOUT;
2665 }
2666
2667 rettime = ktime_get();
2668 delta = ktime_sub(rettime, calltime);
2669 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2670
2671 BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2672
2673 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2674
2675 return 0;
2676 }
2677
btusb_hw_error_intel(struct hci_dev * hdev,u8 code)2678 static void btusb_hw_error_intel(struct hci_dev *hdev, u8 code)
2679 {
2680 struct sk_buff *skb;
2681 u8 type = 0x00;
2682
2683 BT_ERR("%s: Hardware error 0x%2.2x", hdev->name, code);
2684
2685 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2686 if (IS_ERR(skb)) {
2687 BT_ERR("%s: Reset after hardware error failed (%ld)",
2688 hdev->name, PTR_ERR(skb));
2689 return;
2690 }
2691 kfree_skb(skb);
2692
2693 skb = __hci_cmd_sync(hdev, 0xfc22, 1, &type, HCI_INIT_TIMEOUT);
2694 if (IS_ERR(skb)) {
2695 BT_ERR("%s: Retrieving Intel exception info failed (%ld)",
2696 hdev->name, PTR_ERR(skb));
2697 return;
2698 }
2699
2700 if (skb->len != 13) {
2701 BT_ERR("%s: Exception info size mismatch", hdev->name);
2702 kfree_skb(skb);
2703 return;
2704 }
2705
2706 if (skb->data[0] != 0x00) {
2707 BT_ERR("%s: Exception info command failure (%02x)",
2708 hdev->name, skb->data[0]);
2709 kfree_skb(skb);
2710 return;
2711 }
2712
2713 BT_ERR("%s: Exception info %s", hdev->name, (char *)(skb->data + 1));
2714
2715 kfree_skb(skb);
2716 }
2717
btusb_shutdown_intel(struct hci_dev * hdev)2718 static int btusb_shutdown_intel(struct hci_dev *hdev)
2719 {
2720 struct sk_buff *skb;
2721 long ret;
2722
2723 /* Some platforms have an issue with BT LED when the interface is
2724 * down or BT radio is turned off, which takes 5 seconds to BT LED
2725 * goes off. This command turns off the BT LED immediately.
2726 */
2727 skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2728 if (IS_ERR(skb)) {
2729 ret = PTR_ERR(skb);
2730 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2731 hdev->name, ret);
2732 return ret;
2733 }
2734 kfree_skb(skb);
2735
2736 return 0;
2737 }
2738
btusb_set_bdaddr_marvell(struct hci_dev * hdev,const bdaddr_t * bdaddr)2739 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2740 const bdaddr_t *bdaddr)
2741 {
2742 struct sk_buff *skb;
2743 u8 buf[8];
2744 long ret;
2745
2746 buf[0] = 0xfe;
2747 buf[1] = sizeof(bdaddr_t);
2748 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2749
2750 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2751 if (IS_ERR(skb)) {
2752 ret = PTR_ERR(skb);
2753 BT_ERR("%s: changing Marvell device address failed (%ld)",
2754 hdev->name, ret);
2755 return ret;
2756 }
2757 kfree_skb(skb);
2758
2759 return 0;
2760 }
2761
btusb_set_bdaddr_ath3012(struct hci_dev * hdev,const bdaddr_t * bdaddr)2762 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2763 const bdaddr_t *bdaddr)
2764 {
2765 struct sk_buff *skb;
2766 u8 buf[10];
2767 long ret;
2768
2769 buf[0] = 0x01;
2770 buf[1] = 0x01;
2771 buf[2] = 0x00;
2772 buf[3] = sizeof(bdaddr_t);
2773 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2774
2775 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2776 if (IS_ERR(skb)) {
2777 ret = PTR_ERR(skb);
2778 BT_ERR("%s: Change address command failed (%ld)",
2779 hdev->name, ret);
2780 return ret;
2781 }
2782 kfree_skb(skb);
2783
2784 return 0;
2785 }
2786
2787 #define QCA_DFU_PACKET_LEN 4096
2788
2789 #define QCA_GET_TARGET_VERSION 0x09
2790 #define QCA_CHECK_STATUS 0x05
2791 #define QCA_DFU_DOWNLOAD 0x01
2792
2793 #define QCA_SYSCFG_UPDATED 0x40
2794 #define QCA_PATCH_UPDATED 0x80
2795 #define QCA_DFU_TIMEOUT 3000
2796
2797 struct qca_version {
2798 __le32 rom_version;
2799 __le32 patch_version;
2800 __le32 ram_version;
2801 __le32 ref_clock;
2802 __u8 reserved[4];
2803 } __packed;
2804
2805 struct qca_rampatch_version {
2806 __le16 rom_version;
2807 __le16 patch_version;
2808 } __packed;
2809
2810 struct qca_device_info {
2811 u32 rom_version;
2812 u8 rampatch_hdr; /* length of header in rampatch */
2813 u8 nvm_hdr; /* length of header in NVM */
2814 u8 ver_offset; /* offset of version structure in rampatch */
2815 };
2816
2817 static const struct qca_device_info qca_devices_table[] = {
2818 { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2819 { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2820 { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2821 { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2822 { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2823 };
2824
btusb_qca_send_vendor_req(struct hci_dev * hdev,u8 request,void * data,u16 size)2825 static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request,
2826 void *data, u16 size)
2827 {
2828 struct btusb_data *btdata = hci_get_drvdata(hdev);
2829 struct usb_device *udev = btdata->udev;
2830 int pipe, err;
2831 u8 *buf;
2832
2833 buf = kmalloc(size, GFP_KERNEL);
2834 if (!buf)
2835 return -ENOMEM;
2836
2837 /* Found some of USB hosts have IOT issues with ours so that we should
2838 * not wait until HCI layer is ready.
2839 */
2840 pipe = usb_rcvctrlpipe(udev, 0);
2841 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2842 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2843 if (err < 0) {
2844 BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err);
2845 goto done;
2846 }
2847
2848 memcpy(data, buf, size);
2849
2850 done:
2851 kfree(buf);
2852
2853 return err;
2854 }
2855
btusb_setup_qca_download_fw(struct hci_dev * hdev,const struct firmware * firmware,size_t hdr_size)2856 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2857 const struct firmware *firmware,
2858 size_t hdr_size)
2859 {
2860 struct btusb_data *btdata = hci_get_drvdata(hdev);
2861 struct usb_device *udev = btdata->udev;
2862 size_t count, size, sent = 0;
2863 int pipe, len, err;
2864 u8 *buf;
2865
2866 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2867 if (!buf)
2868 return -ENOMEM;
2869
2870 count = firmware->size;
2871
2872 size = min_t(size_t, count, hdr_size);
2873 memcpy(buf, firmware->data, size);
2874
2875 /* USB patches should go down to controller through USB path
2876 * because binary format fits to go down through USB channel.
2877 * USB control path is for patching headers and USB bulk is for
2878 * patch body.
2879 */
2880 pipe = usb_sndctrlpipe(udev, 0);
2881 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2882 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2883 if (err < 0) {
2884 BT_ERR("%s: Failed to send headers (%d)", hdev->name, err);
2885 goto done;
2886 }
2887
2888 sent += size;
2889 count -= size;
2890
2891 while (count) {
2892 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2893
2894 memcpy(buf, firmware->data + sent, size);
2895
2896 pipe = usb_sndbulkpipe(udev, 0x02);
2897 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2898 QCA_DFU_TIMEOUT);
2899 if (err < 0) {
2900 BT_ERR("%s: Failed to send body at %zd of %zd (%d)",
2901 hdev->name, sent, firmware->size, err);
2902 break;
2903 }
2904
2905 if (size != len) {
2906 BT_ERR("%s: Failed to get bulk buffer", hdev->name);
2907 err = -EILSEQ;
2908 break;
2909 }
2910
2911 sent += size;
2912 count -= size;
2913 }
2914
2915 done:
2916 kfree(buf);
2917 return err;
2918 }
2919
btusb_setup_qca_load_rampatch(struct hci_dev * hdev,struct qca_version * ver,const struct qca_device_info * info)2920 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2921 struct qca_version *ver,
2922 const struct qca_device_info *info)
2923 {
2924 struct qca_rampatch_version *rver;
2925 const struct firmware *fw;
2926 u32 ver_rom, ver_patch;
2927 u16 rver_rom, rver_patch;
2928 char fwname[64];
2929 int err;
2930
2931 ver_rom = le32_to_cpu(ver->rom_version);
2932 ver_patch = le32_to_cpu(ver->patch_version);
2933
2934 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2935
2936 err = request_firmware(&fw, fwname, &hdev->dev);
2937 if (err) {
2938 BT_ERR("%s: failed to request rampatch file: %s (%d)",
2939 hdev->name, fwname, err);
2940 return err;
2941 }
2942
2943 BT_INFO("%s: using rampatch file: %s", hdev->name, fwname);
2944
2945 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2946 rver_rom = le16_to_cpu(rver->rom_version);
2947 rver_patch = le16_to_cpu(rver->patch_version);
2948
2949 BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x "
2950 "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom,
2951 ver_patch);
2952
2953 if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2954 BT_ERR("%s: rampatch file version did not match with firmware",
2955 hdev->name);
2956 err = -EINVAL;
2957 goto done;
2958 }
2959
2960 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2961
2962 done:
2963 release_firmware(fw);
2964
2965 return err;
2966 }
2967
btusb_setup_qca_load_nvm(struct hci_dev * hdev,struct qca_version * ver,const struct qca_device_info * info)2968 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2969 struct qca_version *ver,
2970 const struct qca_device_info *info)
2971 {
2972 const struct firmware *fw;
2973 char fwname[64];
2974 int err;
2975
2976 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2977 le32_to_cpu(ver->rom_version));
2978
2979 err = request_firmware(&fw, fwname, &hdev->dev);
2980 if (err) {
2981 BT_ERR("%s: failed to request NVM file: %s (%d)",
2982 hdev->name, fwname, err);
2983 return err;
2984 }
2985
2986 BT_INFO("%s: using NVM file: %s", hdev->name, fwname);
2987
2988 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2989
2990 release_firmware(fw);
2991
2992 return err;
2993 }
2994
btusb_setup_qca(struct hci_dev * hdev)2995 static int btusb_setup_qca(struct hci_dev *hdev)
2996 {
2997 const struct qca_device_info *info = NULL;
2998 struct qca_version ver;
2999 u32 ver_rom;
3000 u8 status;
3001 int i, err;
3002
3003 err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver,
3004 sizeof(ver));
3005 if (err < 0)
3006 return err;
3007
3008 ver_rom = le32_to_cpu(ver.rom_version);
3009 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
3010 if (ver_rom == qca_devices_table[i].rom_version)
3011 info = &qca_devices_table[i];
3012 }
3013 if (!info) {
3014 BT_ERR("%s: don't support firmware rome 0x%x", hdev->name,
3015 ver_rom);
3016 return -ENODEV;
3017 }
3018
3019 err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status,
3020 sizeof(status));
3021 if (err < 0)
3022 return err;
3023
3024 if (!(status & QCA_PATCH_UPDATED)) {
3025 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3026 if (err < 0)
3027 return err;
3028 }
3029
3030 if (!(status & QCA_SYSCFG_UPDATED)) {
3031 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3032 if (err < 0)
3033 return err;
3034 }
3035
3036 return 0;
3037 }
3038
btusb_probe(struct usb_interface * intf,const struct usb_device_id * id)3039 static int btusb_probe(struct usb_interface *intf,
3040 const struct usb_device_id *id)
3041 {
3042 struct usb_endpoint_descriptor *ep_desc;
3043 struct btusb_data *data;
3044 struct hci_dev *hdev;
3045 int i, err;
3046
3047 BT_DBG("intf %p id %p", intf, id);
3048
3049 /* interface numbers are hardcoded in the spec */
3050 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
3051 return -ENODEV;
3052
3053 if (!id->driver_info) {
3054 const struct usb_device_id *match;
3055
3056 match = usb_match_id(intf, blacklist_table);
3057 if (match)
3058 id = match;
3059 }
3060
3061 if (id->driver_info == BTUSB_IGNORE)
3062 return -ENODEV;
3063
3064 if (id->driver_info & BTUSB_ATH3012) {
3065 struct usb_device *udev = interface_to_usbdev(intf);
3066
3067 /* Old firmware would otherwise let ath3k driver load
3068 * patch and sysconfig files */
3069 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
3070 return -ENODEV;
3071 }
3072
3073 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
3074 if (!data)
3075 return -ENOMEM;
3076
3077 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3078 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3079
3080 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
3081 data->intr_ep = ep_desc;
3082 continue;
3083 }
3084
3085 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3086 data->bulk_tx_ep = ep_desc;
3087 continue;
3088 }
3089
3090 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3091 data->bulk_rx_ep = ep_desc;
3092 continue;
3093 }
3094 }
3095
3096 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
3097 return -ENODEV;
3098
3099 if (id->driver_info & BTUSB_AMP) {
3100 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
3101 data->cmdreq = 0x2b;
3102 } else {
3103 data->cmdreq_type = USB_TYPE_CLASS;
3104 data->cmdreq = 0x00;
3105 }
3106
3107 data->udev = interface_to_usbdev(intf);
3108 data->intf = intf;
3109
3110 INIT_WORK(&data->work, btusb_work);
3111 INIT_WORK(&data->waker, btusb_waker);
3112 init_usb_anchor(&data->deferred);
3113 init_usb_anchor(&data->tx_anchor);
3114 spin_lock_init(&data->txlock);
3115
3116 init_usb_anchor(&data->intr_anchor);
3117 init_usb_anchor(&data->bulk_anchor);
3118 init_usb_anchor(&data->isoc_anchor);
3119 spin_lock_init(&data->rxlock);
3120
3121 if (id->driver_info & BTUSB_INTEL_NEW) {
3122 data->recv_event = btusb_recv_event_intel;
3123 data->recv_bulk = btusb_recv_bulk_intel;
3124 set_bit(BTUSB_BOOTLOADER, &data->flags);
3125 } else {
3126 data->recv_event = hci_recv_frame;
3127 data->recv_bulk = btusb_recv_bulk;
3128 }
3129
3130 hdev = hci_alloc_dev();
3131 if (!hdev)
3132 return -ENOMEM;
3133
3134 hdev->bus = HCI_USB;
3135 hci_set_drvdata(hdev, data);
3136
3137 if (id->driver_info & BTUSB_AMP)
3138 hdev->dev_type = HCI_AMP;
3139 else
3140 hdev->dev_type = HCI_BREDR;
3141
3142 data->hdev = hdev;
3143
3144 SET_HCIDEV_DEV(hdev, &intf->dev);
3145
3146 hdev->open = btusb_open;
3147 hdev->close = btusb_close;
3148 hdev->flush = btusb_flush;
3149 hdev->send = btusb_send_frame;
3150 hdev->notify = btusb_notify;
3151
3152 if (id->driver_info & BTUSB_BCM92035)
3153 hdev->setup = btusb_setup_bcm92035;
3154
3155 #ifdef CONFIG_BT_HCIBTUSB_BCM
3156 if (id->driver_info & BTUSB_BCM_PATCHRAM) {
3157 hdev->setup = btbcm_setup_patchram;
3158 hdev->set_bdaddr = btbcm_set_bdaddr;
3159 }
3160
3161 if (id->driver_info & BTUSB_BCM_APPLE)
3162 hdev->setup = btbcm_setup_apple;
3163 #endif
3164
3165 if (id->driver_info & BTUSB_INTEL) {
3166 hdev->setup = btusb_setup_intel;
3167 hdev->shutdown = btusb_shutdown_intel;
3168 hdev->set_bdaddr = btintel_set_bdaddr;
3169 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3170 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3171 }
3172
3173 if (id->driver_info & BTUSB_INTEL_NEW) {
3174 hdev->send = btusb_send_frame_intel;
3175 hdev->setup = btusb_setup_intel_new;
3176 hdev->hw_error = btusb_hw_error_intel;
3177 hdev->set_bdaddr = btintel_set_bdaddr;
3178 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3179 }
3180
3181 if (id->driver_info & BTUSB_MARVELL)
3182 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3183
3184 if (id->driver_info & BTUSB_SWAVE) {
3185 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3186 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3187 }
3188
3189 if (id->driver_info & BTUSB_INTEL_BOOT)
3190 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3191
3192 if (id->driver_info & BTUSB_ATH3012) {
3193 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3194 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3195 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3196 }
3197
3198 if (id->driver_info & BTUSB_QCA_ROME) {
3199 data->setup_on_usb = btusb_setup_qca;
3200 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3201 }
3202
3203 if (id->driver_info & BTUSB_REALTEK)
3204 hdev->setup = btusb_setup_realtek;
3205
3206 if (id->driver_info & BTUSB_AMP) {
3207 /* AMP controllers do not support SCO packets */
3208 data->isoc = NULL;
3209 } else {
3210 /* Interface numbers are hardcoded in the specification */
3211 data->isoc = usb_ifnum_to_if(data->udev, 1);
3212 }
3213
3214 if (!reset)
3215 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3216
3217 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3218 if (!disable_scofix)
3219 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3220 }
3221
3222 if (id->driver_info & BTUSB_BROKEN_ISOC)
3223 data->isoc = NULL;
3224
3225 if (id->driver_info & BTUSB_DIGIANSWER) {
3226 data->cmdreq_type = USB_TYPE_VENDOR;
3227 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3228 }
3229
3230 if (id->driver_info & BTUSB_CSR) {
3231 struct usb_device *udev = data->udev;
3232 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3233
3234 /* Old firmware would otherwise execute USB reset */
3235 if (bcdDevice < 0x117)
3236 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3237
3238 /* Fake CSR devices with broken commands */
3239 if (bcdDevice <= 0x100)
3240 hdev->setup = btusb_setup_csr;
3241
3242 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3243 }
3244
3245 if (id->driver_info & BTUSB_SNIFFER) {
3246 struct usb_device *udev = data->udev;
3247
3248 /* New sniffer firmware has crippled HCI interface */
3249 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3250 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3251 }
3252
3253 if (id->driver_info & BTUSB_INTEL_BOOT) {
3254 /* A bug in the bootloader causes that interrupt interface is
3255 * only enabled after receiving SetInterface(0, AltSetting=0).
3256 */
3257 err = usb_set_interface(data->udev, 0, 0);
3258 if (err < 0) {
3259 BT_ERR("failed to set interface 0, alt 0 %d", err);
3260 hci_free_dev(hdev);
3261 return err;
3262 }
3263 }
3264
3265 if (data->isoc) {
3266 err = usb_driver_claim_interface(&btusb_driver,
3267 data->isoc, data);
3268 if (err < 0) {
3269 hci_free_dev(hdev);
3270 return err;
3271 }
3272 }
3273
3274 err = hci_register_dev(hdev);
3275 if (err < 0) {
3276 hci_free_dev(hdev);
3277 return err;
3278 }
3279
3280 usb_set_intfdata(intf, data);
3281
3282 return 0;
3283 }
3284
btusb_disconnect(struct usb_interface * intf)3285 static void btusb_disconnect(struct usb_interface *intf)
3286 {
3287 struct btusb_data *data = usb_get_intfdata(intf);
3288 struct hci_dev *hdev;
3289
3290 BT_DBG("intf %p", intf);
3291
3292 if (!data)
3293 return;
3294
3295 hdev = data->hdev;
3296 usb_set_intfdata(data->intf, NULL);
3297
3298 if (data->isoc)
3299 usb_set_intfdata(data->isoc, NULL);
3300
3301 hci_unregister_dev(hdev);
3302
3303 if (intf == data->isoc)
3304 usb_driver_release_interface(&btusb_driver, data->intf);
3305 else if (data->isoc)
3306 usb_driver_release_interface(&btusb_driver, data->isoc);
3307
3308 hci_free_dev(hdev);
3309 }
3310
3311 #ifdef CONFIG_PM
btusb_suspend(struct usb_interface * intf,pm_message_t message)3312 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3313 {
3314 struct btusb_data *data = usb_get_intfdata(intf);
3315
3316 BT_DBG("intf %p", intf);
3317
3318 if (data->suspend_count++)
3319 return 0;
3320
3321 spin_lock_irq(&data->txlock);
3322 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3323 set_bit(BTUSB_SUSPENDING, &data->flags);
3324 spin_unlock_irq(&data->txlock);
3325 } else {
3326 spin_unlock_irq(&data->txlock);
3327 data->suspend_count--;
3328 return -EBUSY;
3329 }
3330
3331 cancel_work_sync(&data->work);
3332
3333 btusb_stop_traffic(data);
3334 usb_kill_anchored_urbs(&data->tx_anchor);
3335
3336 return 0;
3337 }
3338
play_deferred(struct btusb_data * data)3339 static void play_deferred(struct btusb_data *data)
3340 {
3341 struct urb *urb;
3342 int err;
3343
3344 while ((urb = usb_get_from_anchor(&data->deferred))) {
3345 err = usb_submit_urb(urb, GFP_ATOMIC);
3346 if (err < 0)
3347 break;
3348
3349 data->tx_in_flight++;
3350 }
3351 usb_scuttle_anchored_urbs(&data->deferred);
3352 }
3353
btusb_resume(struct usb_interface * intf)3354 static int btusb_resume(struct usb_interface *intf)
3355 {
3356 struct btusb_data *data = usb_get_intfdata(intf);
3357 struct hci_dev *hdev = data->hdev;
3358 int err = 0;
3359
3360 BT_DBG("intf %p", intf);
3361
3362 if (--data->suspend_count)
3363 return 0;
3364
3365 if (!test_bit(HCI_RUNNING, &hdev->flags))
3366 goto done;
3367
3368 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3369 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3370 if (err < 0) {
3371 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3372 goto failed;
3373 }
3374 }
3375
3376 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3377 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3378 if (err < 0) {
3379 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3380 goto failed;
3381 }
3382
3383 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3384 }
3385
3386 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3387 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3388 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3389 else
3390 btusb_submit_isoc_urb(hdev, GFP_NOIO);
3391 }
3392
3393 spin_lock_irq(&data->txlock);
3394 play_deferred(data);
3395 clear_bit(BTUSB_SUSPENDING, &data->flags);
3396 spin_unlock_irq(&data->txlock);
3397 schedule_work(&data->work);
3398
3399 return 0;
3400
3401 failed:
3402 usb_scuttle_anchored_urbs(&data->deferred);
3403 done:
3404 spin_lock_irq(&data->txlock);
3405 clear_bit(BTUSB_SUSPENDING, &data->flags);
3406 spin_unlock_irq(&data->txlock);
3407
3408 return err;
3409 }
3410 #endif
3411
3412 static struct usb_driver btusb_driver = {
3413 .name = "btusb",
3414 .probe = btusb_probe,
3415 .disconnect = btusb_disconnect,
3416 #ifdef CONFIG_PM
3417 .suspend = btusb_suspend,
3418 .resume = btusb_resume,
3419 #endif
3420 .id_table = btusb_table,
3421 .supports_autosuspend = 1,
3422 .disable_hub_initiated_lpm = 1,
3423 };
3424
3425 module_usb_driver(btusb_driver);
3426
3427 module_param(disable_scofix, bool, 0644);
3428 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3429
3430 module_param(force_scofix, bool, 0644);
3431 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3432
3433 module_param(reset, bool, 0644);
3434 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3435
3436 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3437 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3438 MODULE_VERSION(VERSION);
3439 MODULE_LICENSE("GPL");
3440