Version:  2.0.40 2.2.26 2.4.37 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1 4.2

Linux/drivers/bluetooth/btusb.c

  1 /*
  2  *
  3  *  Generic Bluetooth USB driver
  4  *
  5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
  6  *
  7  *
  8  *  This program is free software; you can redistribute it and/or modify
  9  *  it under the terms of the GNU General Public License as published by
 10  *  the Free Software Foundation; either version 2 of the License, or
 11  *  (at your option) any later version.
 12  *
 13  *  This program is distributed in the hope that it will be useful,
 14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 16  *  GNU General Public License for more details.
 17  *
 18  *  You should have received a copy of the GNU General Public License
 19  *  along with this program; if not, write to the Free Software
 20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 21  *
 22  */
 23 
 24 #include <linux/module.h>
 25 #include <linux/usb.h>
 26 #include <linux/firmware.h>
 27 #include <asm/unaligned.h>
 28 
 29 #include <net/bluetooth/bluetooth.h>
 30 #include <net/bluetooth/hci_core.h>
 31 
 32 #include "btintel.h"
 33 #include "btbcm.h"
 34 #include "btrtl.h"
 35 
 36 #define VERSION "0.8"
 37 
 38 static bool disable_scofix;
 39 static bool force_scofix;
 40 
 41 static bool reset = true;
 42 
 43 static struct usb_driver btusb_driver;
 44 
 45 #define BTUSB_IGNORE            0x01
 46 #define BTUSB_DIGIANSWER        0x02
 47 #define BTUSB_CSR               0x04
 48 #define BTUSB_SNIFFER           0x08
 49 #define BTUSB_BCM92035          0x10
 50 #define BTUSB_BROKEN_ISOC       0x20
 51 #define BTUSB_WRONG_SCO_MTU     0x40
 52 #define BTUSB_ATH3012           0x80
 53 #define BTUSB_INTEL             0x100
 54 #define BTUSB_INTEL_BOOT        0x200
 55 #define BTUSB_BCM_PATCHRAM      0x400
 56 #define BTUSB_MARVELL           0x800
 57 #define BTUSB_SWAVE             0x1000
 58 #define BTUSB_INTEL_NEW         0x2000
 59 #define BTUSB_AMP               0x4000
 60 #define BTUSB_QCA_ROME          0x8000
 61 #define BTUSB_BCM_APPLE         0x10000
 62 #define BTUSB_REALTEK           0x20000
 63 
 64 static const struct usb_device_id btusb_table[] = {
 65         /* Generic Bluetooth USB device */
 66         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
 67 
 68         /* Generic Bluetooth AMP device */
 69         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
 70 
 71         /* Apple-specific (Broadcom) devices */
 72         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
 73           .driver_info = BTUSB_BCM_APPLE },
 74 
 75         /* MediaTek MT76x0E */
 76         { USB_DEVICE(0x0e8d, 0x763f) },
 77 
 78         /* Broadcom SoftSailing reporting vendor specific */
 79         { USB_DEVICE(0x0a5c, 0x21e1) },
 80 
 81         /* Apple MacBookPro 7,1 */
 82         { USB_DEVICE(0x05ac, 0x8213) },
 83 
 84         /* Apple iMac11,1 */
 85         { USB_DEVICE(0x05ac, 0x8215) },
 86 
 87         /* Apple MacBookPro6,2 */
 88         { USB_DEVICE(0x05ac, 0x8218) },
 89 
 90         /* Apple MacBookAir3,1, MacBookAir3,2 */
 91         { USB_DEVICE(0x05ac, 0x821b) },
 92 
 93         /* Apple MacBookAir4,1 */
 94         { USB_DEVICE(0x05ac, 0x821f) },
 95 
 96         /* Apple MacBookPro8,2 */
 97         { USB_DEVICE(0x05ac, 0x821a) },
 98 
 99         /* Apple MacMini5,1 */
100         { USB_DEVICE(0x05ac, 0x8281) },
101 
102         /* AVM BlueFRITZ! USB v2.0 */
103         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
104 
105         /* Bluetooth Ultraport Module from IBM */
106         { USB_DEVICE(0x04bf, 0x030a) },
107 
108         /* ALPS Modules with non-standard id */
109         { USB_DEVICE(0x044e, 0x3001) },
110         { USB_DEVICE(0x044e, 0x3002) },
111 
112         /* Ericsson with non-standard id */
113         { USB_DEVICE(0x0bdb, 0x1002) },
114 
115         /* Canyon CN-BTU1 with HID interfaces */
116         { USB_DEVICE(0x0c10, 0x0000) },
117 
118         /* Broadcom BCM20702A0 */
119         { USB_DEVICE(0x413c, 0x8197) },
120 
121         /* Broadcom BCM20702B0 (Dynex/Insignia) */
122         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
123 
124         /* Foxconn - Hon Hai */
125         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
126           .driver_info = BTUSB_BCM_PATCHRAM },
127 
128         /* Lite-On Technology - Broadcom based */
129         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
130           .driver_info = BTUSB_BCM_PATCHRAM },
131 
132         /* Broadcom devices with vendor specific id */
133         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
134           .driver_info = BTUSB_BCM_PATCHRAM },
135 
136         /* ASUSTek Computer - Broadcom based */
137         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
138           .driver_info = BTUSB_BCM_PATCHRAM },
139 
140         /* Belkin F8065bf - Broadcom based */
141         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
142           .driver_info = BTUSB_BCM_PATCHRAM },
143 
144         /* IMC Networks - Broadcom based */
145         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
146           .driver_info = BTUSB_BCM_PATCHRAM },
147 
148         /* Intel Bluetooth USB Bootloader (RAM module) */
149         { USB_DEVICE(0x8087, 0x0a5a),
150           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
151 
152         { }     /* Terminating entry */
153 };
154 
155 MODULE_DEVICE_TABLE(usb, btusb_table);
156 
157 static const struct usb_device_id blacklist_table[] = {
158         /* CSR BlueCore devices */
159         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
160 
161         /* Broadcom BCM2033 without firmware */
162         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
163 
164         /* Atheros 3011 with sflash firmware */
165         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
166         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
167         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
168         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
169         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
170         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
171         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
172 
173         /* Atheros AR9285 Malbec with sflash firmware */
174         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
175 
176         /* Atheros 3012 with sflash firmware */
177         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
178         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
179         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
180         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
181         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
182         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
183         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
184         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
185         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
186         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
187         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
188         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
189         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
190         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
191         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
192         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
193         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
194         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
195         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
196         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
197         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
198         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
199         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
200         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
201         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
202         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
203         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
204         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
205         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
206         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
207         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
208         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
209         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
210         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
211         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
212         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
213         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
214         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
215         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
216         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
217         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
218 
219         /* Atheros AR5BBU12 with sflash firmware */
220         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
221 
222         /* Atheros AR5BBU12 with sflash firmware */
223         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
224         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
225 
226         /* QCA ROME chipset */
227         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
228         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
229         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
230 
231         /* Broadcom BCM2035 */
232         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
233         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
234         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
235 
236         /* Broadcom BCM2045 */
237         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
238         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
239 
240         /* IBM/Lenovo ThinkPad with Broadcom chip */
241         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
242         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
243 
244         /* HP laptop with Broadcom chip */
245         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
246 
247         /* Dell laptop with Broadcom chip */
248         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
249 
250         /* Dell Wireless 370 and 410 devices */
251         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
252         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
253 
254         /* Belkin F8T012 and F8T013 devices */
255         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
256         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
257 
258         /* Asus WL-BTD202 device */
259         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
260 
261         /* Kensington Bluetooth USB adapter */
262         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
263 
264         /* RTX Telecom based adapters with buggy SCO support */
265         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
266         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
267 
268         /* CONWISE Technology based adapters with buggy SCO support */
269         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
270 
271         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
272         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
273 
274         /* Digianswer devices */
275         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
276         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
277 
278         /* CSR BlueCore Bluetooth Sniffer */
279         { USB_DEVICE(0x0a12, 0x0002),
280           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
281 
282         /* Frontline ComProbe Bluetooth Sniffer */
283         { USB_DEVICE(0x16d3, 0x0002),
284           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
285 
286         /* Marvell Bluetooth devices */
287         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
288         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
289 
290         /* Intel Bluetooth devices */
291         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
292         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
293         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
294         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
295 
296         /* Other Intel Bluetooth devices */
297         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
298           .driver_info = BTUSB_IGNORE },
299 
300         /* Realtek Bluetooth devices */
301         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
302           .driver_info = BTUSB_REALTEK },
303 
304         /* Additional Realtek 8723AE Bluetooth devices */
305         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
306         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
307 
308         /* Additional Realtek 8723BE Bluetooth devices */
309         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
310         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
311         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
312         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
313         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
314 
315         /* Additional Realtek 8821AE Bluetooth devices */
316         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
317         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
318         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
319         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
320         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
321 
322         { }     /* Terminating entry */
323 };
324 
325 #define BTUSB_MAX_ISOC_FRAMES   10
326 
327 #define BTUSB_INTR_RUNNING      0
328 #define BTUSB_BULK_RUNNING      1
329 #define BTUSB_ISOC_RUNNING      2
330 #define BTUSB_SUSPENDING        3
331 #define BTUSB_DID_ISO_RESUME    4
332 #define BTUSB_BOOTLOADER        5
333 #define BTUSB_DOWNLOADING       6
334 #define BTUSB_FIRMWARE_LOADED   7
335 #define BTUSB_FIRMWARE_FAILED   8
336 #define BTUSB_BOOTING           9
337 #define BTUSB_RESET_RESUME      10
338 
339 struct btusb_data {
340         struct hci_dev       *hdev;
341         struct usb_device    *udev;
342         struct usb_interface *intf;
343         struct usb_interface *isoc;
344 
345         unsigned long flags;
346 
347         struct work_struct work;
348         struct work_struct waker;
349 
350         struct usb_anchor deferred;
351         struct usb_anchor tx_anchor;
352         int tx_in_flight;
353         spinlock_t txlock;
354 
355         struct usb_anchor intr_anchor;
356         struct usb_anchor bulk_anchor;
357         struct usb_anchor isoc_anchor;
358         spinlock_t rxlock;
359 
360         struct sk_buff *evt_skb;
361         struct sk_buff *acl_skb;
362         struct sk_buff *sco_skb;
363 
364         struct usb_endpoint_descriptor *intr_ep;
365         struct usb_endpoint_descriptor *bulk_tx_ep;
366         struct usb_endpoint_descriptor *bulk_rx_ep;
367         struct usb_endpoint_descriptor *isoc_tx_ep;
368         struct usb_endpoint_descriptor *isoc_rx_ep;
369 
370         __u8 cmdreq_type;
371         __u8 cmdreq;
372 
373         unsigned int sco_num;
374         int isoc_altsetting;
375         int suspend_count;
376 
377         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
378         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
379 
380         int (*setup_on_usb)(struct hci_dev *hdev);
381 };
382 
383 static inline void btusb_free_frags(struct btusb_data *data)
384 {
385         unsigned long flags;
386 
387         spin_lock_irqsave(&data->rxlock, flags);
388 
389         kfree_skb(data->evt_skb);
390         data->evt_skb = NULL;
391 
392         kfree_skb(data->acl_skb);
393         data->acl_skb = NULL;
394 
395         kfree_skb(data->sco_skb);
396         data->sco_skb = NULL;
397 
398         spin_unlock_irqrestore(&data->rxlock, flags);
399 }
400 
401 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
402 {
403         struct sk_buff *skb;
404         int err = 0;
405 
406         spin_lock(&data->rxlock);
407         skb = data->evt_skb;
408 
409         while (count) {
410                 int len;
411 
412                 if (!skb) {
413                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
414                         if (!skb) {
415                                 err = -ENOMEM;
416                                 break;
417                         }
418 
419                         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
420                         bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
421                 }
422 
423                 len = min_t(uint, bt_cb(skb)->expect, count);
424                 memcpy(skb_put(skb, len), buffer, len);
425 
426                 count -= len;
427                 buffer += len;
428                 bt_cb(skb)->expect -= len;
429 
430                 if (skb->len == HCI_EVENT_HDR_SIZE) {
431                         /* Complete event header */
432                         bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
433 
434                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
435                                 kfree_skb(skb);
436                                 skb = NULL;
437 
438                                 err = -EILSEQ;
439                                 break;
440                         }
441                 }
442 
443                 if (bt_cb(skb)->expect == 0) {
444                         /* Complete frame */
445                         data->recv_event(data->hdev, skb);
446                         skb = NULL;
447                 }
448         }
449 
450         data->evt_skb = skb;
451         spin_unlock(&data->rxlock);
452 
453         return err;
454 }
455 
456 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
457 {
458         struct sk_buff *skb;
459         int err = 0;
460 
461         spin_lock(&data->rxlock);
462         skb = data->acl_skb;
463 
464         while (count) {
465                 int len;
466 
467                 if (!skb) {
468                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
469                         if (!skb) {
470                                 err = -ENOMEM;
471                                 break;
472                         }
473 
474                         bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
475                         bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
476                 }
477 
478                 len = min_t(uint, bt_cb(skb)->expect, count);
479                 memcpy(skb_put(skb, len), buffer, len);
480 
481                 count -= len;
482                 buffer += len;
483                 bt_cb(skb)->expect -= len;
484 
485                 if (skb->len == HCI_ACL_HDR_SIZE) {
486                         __le16 dlen = hci_acl_hdr(skb)->dlen;
487 
488                         /* Complete ACL header */
489                         bt_cb(skb)->expect = __le16_to_cpu(dlen);
490 
491                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
492                                 kfree_skb(skb);
493                                 skb = NULL;
494 
495                                 err = -EILSEQ;
496                                 break;
497                         }
498                 }
499 
500                 if (bt_cb(skb)->expect == 0) {
501                         /* Complete frame */
502                         hci_recv_frame(data->hdev, skb);
503                         skb = NULL;
504                 }
505         }
506 
507         data->acl_skb = skb;
508         spin_unlock(&data->rxlock);
509 
510         return err;
511 }
512 
513 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
514 {
515         struct sk_buff *skb;
516         int err = 0;
517 
518         spin_lock(&data->rxlock);
519         skb = data->sco_skb;
520 
521         while (count) {
522                 int len;
523 
524                 if (!skb) {
525                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
526                         if (!skb) {
527                                 err = -ENOMEM;
528                                 break;
529                         }
530 
531                         bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
532                         bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
533                 }
534 
535                 len = min_t(uint, bt_cb(skb)->expect, count);
536                 memcpy(skb_put(skb, len), buffer, len);
537 
538                 count -= len;
539                 buffer += len;
540                 bt_cb(skb)->expect -= len;
541 
542                 if (skb->len == HCI_SCO_HDR_SIZE) {
543                         /* Complete SCO header */
544                         bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
545 
546                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
547                                 kfree_skb(skb);
548                                 skb = NULL;
549 
550                                 err = -EILSEQ;
551                                 break;
552                         }
553                 }
554 
555                 if (bt_cb(skb)->expect == 0) {
556                         /* Complete frame */
557                         hci_recv_frame(data->hdev, skb);
558                         skb = NULL;
559                 }
560         }
561 
562         data->sco_skb = skb;
563         spin_unlock(&data->rxlock);
564 
565         return err;
566 }
567 
568 static void btusb_intr_complete(struct urb *urb)
569 {
570         struct hci_dev *hdev = urb->context;
571         struct btusb_data *data = hci_get_drvdata(hdev);
572         int err;
573 
574         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
575                urb->actual_length);
576 
577         if (!test_bit(HCI_RUNNING, &hdev->flags))
578                 return;
579 
580         if (urb->status == 0) {
581                 hdev->stat.byte_rx += urb->actual_length;
582 
583                 if (btusb_recv_intr(data, urb->transfer_buffer,
584                                     urb->actual_length) < 0) {
585                         BT_ERR("%s corrupted event packet", hdev->name);
586                         hdev->stat.err_rx++;
587                 }
588         } else if (urb->status == -ENOENT) {
589                 /* Avoid suspend failed when usb_kill_urb */
590                 return;
591         }
592 
593         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
594                 return;
595 
596         usb_mark_last_busy(data->udev);
597         usb_anchor_urb(urb, &data->intr_anchor);
598 
599         err = usb_submit_urb(urb, GFP_ATOMIC);
600         if (err < 0) {
601                 /* -EPERM: urb is being killed;
602                  * -ENODEV: device got disconnected */
603                 if (err != -EPERM && err != -ENODEV)
604                         BT_ERR("%s urb %p failed to resubmit (%d)",
605                                hdev->name, urb, -err);
606                 usb_unanchor_urb(urb);
607         }
608 }
609 
610 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
611 {
612         struct btusb_data *data = hci_get_drvdata(hdev);
613         struct urb *urb;
614         unsigned char *buf;
615         unsigned int pipe;
616         int err, size;
617 
618         BT_DBG("%s", hdev->name);
619 
620         if (!data->intr_ep)
621                 return -ENODEV;
622 
623         urb = usb_alloc_urb(0, mem_flags);
624         if (!urb)
625                 return -ENOMEM;
626 
627         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
628 
629         buf = kmalloc(size, mem_flags);
630         if (!buf) {
631                 usb_free_urb(urb);
632                 return -ENOMEM;
633         }
634 
635         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
636 
637         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
638                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
639 
640         urb->transfer_flags |= URB_FREE_BUFFER;
641 
642         usb_anchor_urb(urb, &data->intr_anchor);
643 
644         err = usb_submit_urb(urb, mem_flags);
645         if (err < 0) {
646                 if (err != -EPERM && err != -ENODEV)
647                         BT_ERR("%s urb %p submission failed (%d)",
648                                hdev->name, urb, -err);
649                 usb_unanchor_urb(urb);
650         }
651 
652         usb_free_urb(urb);
653 
654         return err;
655 }
656 
657 static void btusb_bulk_complete(struct urb *urb)
658 {
659         struct hci_dev *hdev = urb->context;
660         struct btusb_data *data = hci_get_drvdata(hdev);
661         int err;
662 
663         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
664                urb->actual_length);
665 
666         if (!test_bit(HCI_RUNNING, &hdev->flags))
667                 return;
668 
669         if (urb->status == 0) {
670                 hdev->stat.byte_rx += urb->actual_length;
671 
672                 if (data->recv_bulk(data, urb->transfer_buffer,
673                                     urb->actual_length) < 0) {
674                         BT_ERR("%s corrupted ACL packet", hdev->name);
675                         hdev->stat.err_rx++;
676                 }
677         } else if (urb->status == -ENOENT) {
678                 /* Avoid suspend failed when usb_kill_urb */
679                 return;
680         }
681 
682         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
683                 return;
684 
685         usb_anchor_urb(urb, &data->bulk_anchor);
686         usb_mark_last_busy(data->udev);
687 
688         err = usb_submit_urb(urb, GFP_ATOMIC);
689         if (err < 0) {
690                 /* -EPERM: urb is being killed;
691                  * -ENODEV: device got disconnected */
692                 if (err != -EPERM && err != -ENODEV)
693                         BT_ERR("%s urb %p failed to resubmit (%d)",
694                                hdev->name, urb, -err);
695                 usb_unanchor_urb(urb);
696         }
697 }
698 
699 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
700 {
701         struct btusb_data *data = hci_get_drvdata(hdev);
702         struct urb *urb;
703         unsigned char *buf;
704         unsigned int pipe;
705         int err, size = HCI_MAX_FRAME_SIZE;
706 
707         BT_DBG("%s", hdev->name);
708 
709         if (!data->bulk_rx_ep)
710                 return -ENODEV;
711 
712         urb = usb_alloc_urb(0, mem_flags);
713         if (!urb)
714                 return -ENOMEM;
715 
716         buf = kmalloc(size, mem_flags);
717         if (!buf) {
718                 usb_free_urb(urb);
719                 return -ENOMEM;
720         }
721 
722         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
723 
724         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
725                           btusb_bulk_complete, hdev);
726 
727         urb->transfer_flags |= URB_FREE_BUFFER;
728 
729         usb_mark_last_busy(data->udev);
730         usb_anchor_urb(urb, &data->bulk_anchor);
731 
732         err = usb_submit_urb(urb, mem_flags);
733         if (err < 0) {
734                 if (err != -EPERM && err != -ENODEV)
735                         BT_ERR("%s urb %p submission failed (%d)",
736                                hdev->name, urb, -err);
737                 usb_unanchor_urb(urb);
738         }
739 
740         usb_free_urb(urb);
741 
742         return err;
743 }
744 
745 static void btusb_isoc_complete(struct urb *urb)
746 {
747         struct hci_dev *hdev = urb->context;
748         struct btusb_data *data = hci_get_drvdata(hdev);
749         int i, err;
750 
751         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
752                urb->actual_length);
753 
754         if (!test_bit(HCI_RUNNING, &hdev->flags))
755                 return;
756 
757         if (urb->status == 0) {
758                 for (i = 0; i < urb->number_of_packets; i++) {
759                         unsigned int offset = urb->iso_frame_desc[i].offset;
760                         unsigned int length = urb->iso_frame_desc[i].actual_length;
761 
762                         if (urb->iso_frame_desc[i].status)
763                                 continue;
764 
765                         hdev->stat.byte_rx += length;
766 
767                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
768                                             length) < 0) {
769                                 BT_ERR("%s corrupted SCO packet", hdev->name);
770                                 hdev->stat.err_rx++;
771                         }
772                 }
773         } else if (urb->status == -ENOENT) {
774                 /* Avoid suspend failed when usb_kill_urb */
775                 return;
776         }
777 
778         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
779                 return;
780 
781         usb_anchor_urb(urb, &data->isoc_anchor);
782 
783         err = usb_submit_urb(urb, GFP_ATOMIC);
784         if (err < 0) {
785                 /* -EPERM: urb is being killed;
786                  * -ENODEV: device got disconnected */
787                 if (err != -EPERM && err != -ENODEV)
788                         BT_ERR("%s urb %p failed to resubmit (%d)",
789                                hdev->name, urb, -err);
790                 usb_unanchor_urb(urb);
791         }
792 }
793 
794 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
795 {
796         int i, offset = 0;
797 
798         BT_DBG("len %d mtu %d", len, mtu);
799 
800         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
801                                         i++, offset += mtu, len -= mtu) {
802                 urb->iso_frame_desc[i].offset = offset;
803                 urb->iso_frame_desc[i].length = mtu;
804         }
805 
806         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
807                 urb->iso_frame_desc[i].offset = offset;
808                 urb->iso_frame_desc[i].length = len;
809                 i++;
810         }
811 
812         urb->number_of_packets = i;
813 }
814 
815 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
816 {
817         struct btusb_data *data = hci_get_drvdata(hdev);
818         struct urb *urb;
819         unsigned char *buf;
820         unsigned int pipe;
821         int err, size;
822 
823         BT_DBG("%s", hdev->name);
824 
825         if (!data->isoc_rx_ep)
826                 return -ENODEV;
827 
828         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
829         if (!urb)
830                 return -ENOMEM;
831 
832         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
833                                                 BTUSB_MAX_ISOC_FRAMES;
834 
835         buf = kmalloc(size, mem_flags);
836         if (!buf) {
837                 usb_free_urb(urb);
838                 return -ENOMEM;
839         }
840 
841         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
842 
843         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
844                          hdev, data->isoc_rx_ep->bInterval);
845 
846         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
847 
848         __fill_isoc_descriptor(urb, size,
849                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
850 
851         usb_anchor_urb(urb, &data->isoc_anchor);
852 
853         err = usb_submit_urb(urb, mem_flags);
854         if (err < 0) {
855                 if (err != -EPERM && err != -ENODEV)
856                         BT_ERR("%s urb %p submission failed (%d)",
857                                hdev->name, urb, -err);
858                 usb_unanchor_urb(urb);
859         }
860 
861         usb_free_urb(urb);
862 
863         return err;
864 }
865 
866 static void btusb_tx_complete(struct urb *urb)
867 {
868         struct sk_buff *skb = urb->context;
869         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
870         struct btusb_data *data = hci_get_drvdata(hdev);
871 
872         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
873                urb->actual_length);
874 
875         if (!test_bit(HCI_RUNNING, &hdev->flags))
876                 goto done;
877 
878         if (!urb->status)
879                 hdev->stat.byte_tx += urb->transfer_buffer_length;
880         else
881                 hdev->stat.err_tx++;
882 
883 done:
884         spin_lock(&data->txlock);
885         data->tx_in_flight--;
886         spin_unlock(&data->txlock);
887 
888         kfree(urb->setup_packet);
889 
890         kfree_skb(skb);
891 }
892 
893 static void btusb_isoc_tx_complete(struct urb *urb)
894 {
895         struct sk_buff *skb = urb->context;
896         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
897 
898         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
899                urb->actual_length);
900 
901         if (!test_bit(HCI_RUNNING, &hdev->flags))
902                 goto done;
903 
904         if (!urb->status)
905                 hdev->stat.byte_tx += urb->transfer_buffer_length;
906         else
907                 hdev->stat.err_tx++;
908 
909 done:
910         kfree(urb->setup_packet);
911 
912         kfree_skb(skb);
913 }
914 
915 static int btusb_open(struct hci_dev *hdev)
916 {
917         struct btusb_data *data = hci_get_drvdata(hdev);
918         int err;
919 
920         BT_DBG("%s", hdev->name);
921 
922         /* Patching USB firmware files prior to starting any URBs of HCI path
923          * It is more safe to use USB bulk channel for downloading USB patch
924          */
925         if (data->setup_on_usb) {
926                 err = data->setup_on_usb(hdev);
927                 if (err < 0)
928                         return err;
929         }
930 
931         err = usb_autopm_get_interface(data->intf);
932         if (err < 0)
933                 return err;
934 
935         data->intf->needs_remote_wakeup = 1;
936 
937         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
938                 goto done;
939 
940         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
941                 goto done;
942 
943         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
944         if (err < 0)
945                 goto failed;
946 
947         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
948         if (err < 0) {
949                 usb_kill_anchored_urbs(&data->intr_anchor);
950                 goto failed;
951         }
952 
953         set_bit(BTUSB_BULK_RUNNING, &data->flags);
954         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
955 
956 done:
957         usb_autopm_put_interface(data->intf);
958         return 0;
959 
960 failed:
961         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
962         clear_bit(HCI_RUNNING, &hdev->flags);
963         usb_autopm_put_interface(data->intf);
964         return err;
965 }
966 
967 static void btusb_stop_traffic(struct btusb_data *data)
968 {
969         usb_kill_anchored_urbs(&data->intr_anchor);
970         usb_kill_anchored_urbs(&data->bulk_anchor);
971         usb_kill_anchored_urbs(&data->isoc_anchor);
972 }
973 
974 static int btusb_close(struct hci_dev *hdev)
975 {
976         struct btusb_data *data = hci_get_drvdata(hdev);
977         int err;
978 
979         BT_DBG("%s", hdev->name);
980 
981         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
982                 return 0;
983 
984         cancel_work_sync(&data->work);
985         cancel_work_sync(&data->waker);
986 
987         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
988         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
989         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
990 
991         btusb_stop_traffic(data);
992         btusb_free_frags(data);
993 
994         err = usb_autopm_get_interface(data->intf);
995         if (err < 0)
996                 goto failed;
997 
998         data->intf->needs_remote_wakeup = 0;
999         usb_autopm_put_interface(data->intf);
1000 
1001 failed:
1002         usb_scuttle_anchored_urbs(&data->deferred);
1003         return 0;
1004 }
1005 
1006 static int btusb_flush(struct hci_dev *hdev)
1007 {
1008         struct btusb_data *data = hci_get_drvdata(hdev);
1009 
1010         BT_DBG("%s", hdev->name);
1011 
1012         usb_kill_anchored_urbs(&data->tx_anchor);
1013         btusb_free_frags(data);
1014 
1015         return 0;
1016 }
1017 
1018 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1019 {
1020         struct btusb_data *data = hci_get_drvdata(hdev);
1021         struct usb_ctrlrequest *dr;
1022         struct urb *urb;
1023         unsigned int pipe;
1024 
1025         urb = usb_alloc_urb(0, GFP_KERNEL);
1026         if (!urb)
1027                 return ERR_PTR(-ENOMEM);
1028 
1029         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1030         if (!dr) {
1031                 usb_free_urb(urb);
1032                 return ERR_PTR(-ENOMEM);
1033         }
1034 
1035         dr->bRequestType = data->cmdreq_type;
1036         dr->bRequest     = data->cmdreq;
1037         dr->wIndex       = 0;
1038         dr->wValue       = 0;
1039         dr->wLength      = __cpu_to_le16(skb->len);
1040 
1041         pipe = usb_sndctrlpipe(data->udev, 0x00);
1042 
1043         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1044                              skb->data, skb->len, btusb_tx_complete, skb);
1045 
1046         skb->dev = (void *)hdev;
1047 
1048         return urb;
1049 }
1050 
1051 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1052 {
1053         struct btusb_data *data = hci_get_drvdata(hdev);
1054         struct urb *urb;
1055         unsigned int pipe;
1056 
1057         if (!data->bulk_tx_ep)
1058                 return ERR_PTR(-ENODEV);
1059 
1060         urb = usb_alloc_urb(0, GFP_KERNEL);
1061         if (!urb)
1062                 return ERR_PTR(-ENOMEM);
1063 
1064         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1065 
1066         usb_fill_bulk_urb(urb, data->udev, pipe,
1067                           skb->data, skb->len, btusb_tx_complete, skb);
1068 
1069         skb->dev = (void *)hdev;
1070 
1071         return urb;
1072 }
1073 
1074 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1075 {
1076         struct btusb_data *data = hci_get_drvdata(hdev);
1077         struct urb *urb;
1078         unsigned int pipe;
1079 
1080         if (!data->isoc_tx_ep)
1081                 return ERR_PTR(-ENODEV);
1082 
1083         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1084         if (!urb)
1085                 return ERR_PTR(-ENOMEM);
1086 
1087         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1088 
1089         usb_fill_int_urb(urb, data->udev, pipe,
1090                          skb->data, skb->len, btusb_isoc_tx_complete,
1091                          skb, data->isoc_tx_ep->bInterval);
1092 
1093         urb->transfer_flags  = URB_ISO_ASAP;
1094 
1095         __fill_isoc_descriptor(urb, skb->len,
1096                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1097 
1098         skb->dev = (void *)hdev;
1099 
1100         return urb;
1101 }
1102 
1103 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1104 {
1105         struct btusb_data *data = hci_get_drvdata(hdev);
1106         int err;
1107 
1108         usb_anchor_urb(urb, &data->tx_anchor);
1109 
1110         err = usb_submit_urb(urb, GFP_KERNEL);
1111         if (err < 0) {
1112                 if (err != -EPERM && err != -ENODEV)
1113                         BT_ERR("%s urb %p submission failed (%d)",
1114                                hdev->name, urb, -err);
1115                 kfree(urb->setup_packet);
1116                 usb_unanchor_urb(urb);
1117         } else {
1118                 usb_mark_last_busy(data->udev);
1119         }
1120 
1121         usb_free_urb(urb);
1122         return err;
1123 }
1124 
1125 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1126 {
1127         struct btusb_data *data = hci_get_drvdata(hdev);
1128         unsigned long flags;
1129         bool suspending;
1130 
1131         spin_lock_irqsave(&data->txlock, flags);
1132         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1133         if (!suspending)
1134                 data->tx_in_flight++;
1135         spin_unlock_irqrestore(&data->txlock, flags);
1136 
1137         if (!suspending)
1138                 return submit_tx_urb(hdev, urb);
1139 
1140         usb_anchor_urb(urb, &data->deferred);
1141         schedule_work(&data->waker);
1142 
1143         usb_free_urb(urb);
1144         return 0;
1145 }
1146 
1147 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1148 {
1149         struct urb *urb;
1150 
1151         BT_DBG("%s", hdev->name);
1152 
1153         if (!test_bit(HCI_RUNNING, &hdev->flags))
1154                 return -EBUSY;
1155 
1156         switch (bt_cb(skb)->pkt_type) {
1157         case HCI_COMMAND_PKT:
1158                 urb = alloc_ctrl_urb(hdev, skb);
1159                 if (IS_ERR(urb))
1160                         return PTR_ERR(urb);
1161 
1162                 hdev->stat.cmd_tx++;
1163                 return submit_or_queue_tx_urb(hdev, urb);
1164 
1165         case HCI_ACLDATA_PKT:
1166                 urb = alloc_bulk_urb(hdev, skb);
1167                 if (IS_ERR(urb))
1168                         return PTR_ERR(urb);
1169 
1170                 hdev->stat.acl_tx++;
1171                 return submit_or_queue_tx_urb(hdev, urb);
1172 
1173         case HCI_SCODATA_PKT:
1174                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1175                         return -ENODEV;
1176 
1177                 urb = alloc_isoc_urb(hdev, skb);
1178                 if (IS_ERR(urb))
1179                         return PTR_ERR(urb);
1180 
1181                 hdev->stat.sco_tx++;
1182                 return submit_tx_urb(hdev, urb);
1183         }
1184 
1185         return -EILSEQ;
1186 }
1187 
1188 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1189 {
1190         struct btusb_data *data = hci_get_drvdata(hdev);
1191 
1192         BT_DBG("%s evt %d", hdev->name, evt);
1193 
1194         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1195                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1196                 schedule_work(&data->work);
1197         }
1198 }
1199 
1200 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1201 {
1202         struct btusb_data *data = hci_get_drvdata(hdev);
1203         struct usb_interface *intf = data->isoc;
1204         struct usb_endpoint_descriptor *ep_desc;
1205         int i, err;
1206 
1207         if (!data->isoc)
1208                 return -ENODEV;
1209 
1210         err = usb_set_interface(data->udev, 1, altsetting);
1211         if (err < 0) {
1212                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1213                 return err;
1214         }
1215 
1216         data->isoc_altsetting = altsetting;
1217 
1218         data->isoc_tx_ep = NULL;
1219         data->isoc_rx_ep = NULL;
1220 
1221         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1222                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1223 
1224                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1225                         data->isoc_tx_ep = ep_desc;
1226                         continue;
1227                 }
1228 
1229                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1230                         data->isoc_rx_ep = ep_desc;
1231                         continue;
1232                 }
1233         }
1234 
1235         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1236                 BT_ERR("%s invalid SCO descriptors", hdev->name);
1237                 return -ENODEV;
1238         }
1239 
1240         return 0;
1241 }
1242 
1243 static void btusb_work(struct work_struct *work)
1244 {
1245         struct btusb_data *data = container_of(work, struct btusb_data, work);
1246         struct hci_dev *hdev = data->hdev;
1247         int new_alts;
1248         int err;
1249 
1250         if (data->sco_num > 0) {
1251                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1252                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1253                         if (err < 0) {
1254                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1255                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1256                                 return;
1257                         }
1258 
1259                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1260                 }
1261 
1262                 if (hdev->voice_setting & 0x0020) {
1263                         static const int alts[3] = { 2, 4, 5 };
1264 
1265                         new_alts = alts[data->sco_num - 1];
1266                 } else {
1267                         new_alts = data->sco_num;
1268                 }
1269 
1270                 if (data->isoc_altsetting != new_alts) {
1271                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1272                         usb_kill_anchored_urbs(&data->isoc_anchor);
1273 
1274                         if (__set_isoc_interface(hdev, new_alts) < 0)
1275                                 return;
1276                 }
1277 
1278                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1279                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1280                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1281                         else
1282                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1283                 }
1284         } else {
1285                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1286                 usb_kill_anchored_urbs(&data->isoc_anchor);
1287 
1288                 __set_isoc_interface(hdev, 0);
1289                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1290                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1291         }
1292 }
1293 
1294 static void btusb_waker(struct work_struct *work)
1295 {
1296         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1297         int err;
1298 
1299         err = usb_autopm_get_interface(data->intf);
1300         if (err < 0)
1301                 return;
1302 
1303         usb_autopm_put_interface(data->intf);
1304 }
1305 
1306 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1307 {
1308         struct sk_buff *skb;
1309         u8 val = 0x00;
1310 
1311         BT_DBG("%s", hdev->name);
1312 
1313         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1314         if (IS_ERR(skb))
1315                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1316         else
1317                 kfree_skb(skb);
1318 
1319         return 0;
1320 }
1321 
1322 static int btusb_setup_csr(struct hci_dev *hdev)
1323 {
1324         struct hci_rp_read_local_version *rp;
1325         struct sk_buff *skb;
1326 
1327         BT_DBG("%s", hdev->name);
1328 
1329         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1330                              HCI_INIT_TIMEOUT);
1331         if (IS_ERR(skb)) {
1332                 int err = PTR_ERR(skb);
1333                 BT_ERR("%s: CSR: Local version failed (%d)", hdev->name, err);
1334                 return err;
1335         }
1336 
1337         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1338                 BT_ERR("%s: CSR: Local version length mismatch", hdev->name);
1339                 kfree_skb(skb);
1340                 return -EIO;
1341         }
1342 
1343         rp = (struct hci_rp_read_local_version *)skb->data;
1344 
1345         if (le16_to_cpu(rp->manufacturer) != 10) {
1346                 /* Clear the reset quirk since this is not an actual
1347                  * early Bluetooth 1.1 device from CSR.
1348                  */
1349                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1350 
1351                 /* These fake CSR controllers have all a broken
1352                  * stored link key handling and so just disable it.
1353                  */
1354                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1355         }
1356 
1357         kfree_skb(skb);
1358 
1359         return 0;
1360 }
1361 
1362 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1363                                                        struct intel_version *ver)
1364 {
1365         const struct firmware *fw;
1366         char fwname[64];
1367         int ret;
1368 
1369         snprintf(fwname, sizeof(fwname),
1370                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1371                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1372                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1373                  ver->fw_build_ww, ver->fw_build_yy);
1374 
1375         ret = request_firmware(&fw, fwname, &hdev->dev);
1376         if (ret < 0) {
1377                 if (ret == -EINVAL) {
1378                         BT_ERR("%s Intel firmware file request failed (%d)",
1379                                hdev->name, ret);
1380                         return NULL;
1381                 }
1382 
1383                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1384                        hdev->name, fwname, ret);
1385 
1386                 /* If the correct firmware patch file is not found, use the
1387                  * default firmware patch file instead
1388                  */
1389                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1390                          ver->hw_platform, ver->hw_variant);
1391                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1392                         BT_ERR("%s failed to open default Intel fw file: %s",
1393                                hdev->name, fwname);
1394                         return NULL;
1395                 }
1396         }
1397 
1398         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1399 
1400         return fw;
1401 }
1402 
1403 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1404                                       const struct firmware *fw,
1405                                       const u8 **fw_ptr, int *disable_patch)
1406 {
1407         struct sk_buff *skb;
1408         struct hci_command_hdr *cmd;
1409         const u8 *cmd_param;
1410         struct hci_event_hdr *evt = NULL;
1411         const u8 *evt_param = NULL;
1412         int remain = fw->size - (*fw_ptr - fw->data);
1413 
1414         /* The first byte indicates the types of the patch command or event.
1415          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1416          * in the current firmware buffer doesn't start with 0x01 or
1417          * the size of remain buffer is smaller than HCI command header,
1418          * the firmware file is corrupted and it should stop the patching
1419          * process.
1420          */
1421         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1422                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1423                 return -EINVAL;
1424         }
1425         (*fw_ptr)++;
1426         remain--;
1427 
1428         cmd = (struct hci_command_hdr *)(*fw_ptr);
1429         *fw_ptr += sizeof(*cmd);
1430         remain -= sizeof(*cmd);
1431 
1432         /* Ensure that the remain firmware data is long enough than the length
1433          * of command parameter. If not, the firmware file is corrupted.
1434          */
1435         if (remain < cmd->plen) {
1436                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1437                 return -EFAULT;
1438         }
1439 
1440         /* If there is a command that loads a patch in the firmware
1441          * file, then enable the patch upon success, otherwise just
1442          * disable the manufacturer mode, for example patch activation
1443          * is not required when the default firmware patch file is used
1444          * because there are no patch data to load.
1445          */
1446         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1447                 *disable_patch = 0;
1448 
1449         cmd_param = *fw_ptr;
1450         *fw_ptr += cmd->plen;
1451         remain -= cmd->plen;
1452 
1453         /* This reads the expected events when the above command is sent to the
1454          * device. Some vendor commands expects more than one events, for
1455          * example command status event followed by vendor specific event.
1456          * For this case, it only keeps the last expected event. so the command
1457          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1458          * last expected event.
1459          */
1460         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1461                 (*fw_ptr)++;
1462                 remain--;
1463 
1464                 evt = (struct hci_event_hdr *)(*fw_ptr);
1465                 *fw_ptr += sizeof(*evt);
1466                 remain -= sizeof(*evt);
1467 
1468                 if (remain < evt->plen) {
1469                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1470                                hdev->name);
1471                         return -EFAULT;
1472                 }
1473 
1474                 evt_param = *fw_ptr;
1475                 *fw_ptr += evt->plen;
1476                 remain -= evt->plen;
1477         }
1478 
1479         /* Every HCI commands in the firmware file has its correspond event.
1480          * If event is not found or remain is smaller than zero, the firmware
1481          * file is corrupted.
1482          */
1483         if (!evt || !evt_param || remain < 0) {
1484                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1485                 return -EFAULT;
1486         }
1487 
1488         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1489                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1490         if (IS_ERR(skb)) {
1491                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1492                        hdev->name, cmd->opcode, PTR_ERR(skb));
1493                 return PTR_ERR(skb);
1494         }
1495 
1496         /* It ensures that the returned event matches the event data read from
1497          * the firmware file. At fist, it checks the length and then
1498          * the contents of the event.
1499          */
1500         if (skb->len != evt->plen) {
1501                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1502                        le16_to_cpu(cmd->opcode));
1503                 kfree_skb(skb);
1504                 return -EFAULT;
1505         }
1506 
1507         if (memcmp(skb->data, evt_param, evt->plen)) {
1508                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1509                        hdev->name, le16_to_cpu(cmd->opcode));
1510                 kfree_skb(skb);
1511                 return -EFAULT;
1512         }
1513         kfree_skb(skb);
1514 
1515         return 0;
1516 }
1517 
1518 static int btusb_setup_intel(struct hci_dev *hdev)
1519 {
1520         struct sk_buff *skb;
1521         const struct firmware *fw;
1522         const u8 *fw_ptr;
1523         int disable_patch;
1524         struct intel_version *ver;
1525 
1526         const u8 mfg_enable[] = { 0x01, 0x00 };
1527         const u8 mfg_disable[] = { 0x00, 0x00 };
1528         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1529         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1530 
1531         BT_DBG("%s", hdev->name);
1532 
1533         /* The controller has a bug with the first HCI command sent to it
1534          * returning number of completed commands as zero. This would stall the
1535          * command processing in the Bluetooth core.
1536          *
1537          * As a workaround, send HCI Reset command first which will reset the
1538          * number of completed commands and allow normal command processing
1539          * from now on.
1540          */
1541         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1542         if (IS_ERR(skb)) {
1543                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1544                        hdev->name, PTR_ERR(skb));
1545                 return PTR_ERR(skb);
1546         }
1547         kfree_skb(skb);
1548 
1549         /* Read Intel specific controller version first to allow selection of
1550          * which firmware file to load.
1551          *
1552          * The returned information are hardware variant and revision plus
1553          * firmware variant, revision and build number.
1554          */
1555         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1556         if (IS_ERR(skb)) {
1557                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1558                        hdev->name, PTR_ERR(skb));
1559                 return PTR_ERR(skb);
1560         }
1561 
1562         if (skb->len != sizeof(*ver)) {
1563                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1564                 kfree_skb(skb);
1565                 return -EIO;
1566         }
1567 
1568         ver = (struct intel_version *)skb->data;
1569 
1570         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1571                 hdev->name, ver->hw_platform, ver->hw_variant,
1572                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1573                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1574                 ver->fw_patch_num);
1575 
1576         /* fw_patch_num indicates the version of patch the device currently
1577          * have. If there is no patch data in the device, it is always 0x00.
1578          * So, if it is other than 0x00, no need to patch the deivce again.
1579          */
1580         if (ver->fw_patch_num) {
1581                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1582                         hdev->name, ver->fw_patch_num);
1583                 kfree_skb(skb);
1584                 btintel_check_bdaddr(hdev);
1585                 return 0;
1586         }
1587 
1588         /* Opens the firmware patch file based on the firmware version read
1589          * from the controller. If it fails to open the matching firmware
1590          * patch file, it tries to open the default firmware patch file.
1591          * If no patch file is found, allow the device to operate without
1592          * a patch.
1593          */
1594         fw = btusb_setup_intel_get_fw(hdev, ver);
1595         if (!fw) {
1596                 kfree_skb(skb);
1597                 btintel_check_bdaddr(hdev);
1598                 return 0;
1599         }
1600         fw_ptr = fw->data;
1601 
1602         kfree_skb(skb);
1603 
1604         /* This Intel specific command enables the manufacturer mode of the
1605          * controller.
1606          *
1607          * Only while this mode is enabled, the driver can download the
1608          * firmware patch data and configuration parameters.
1609          */
1610         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1611         if (IS_ERR(skb)) {
1612                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1613                        hdev->name, PTR_ERR(skb));
1614                 release_firmware(fw);
1615                 return PTR_ERR(skb);
1616         }
1617 
1618         kfree_skb(skb);
1619 
1620         disable_patch = 1;
1621 
1622         /* The firmware data file consists of list of Intel specific HCI
1623          * commands and its expected events. The first byte indicates the
1624          * type of the message, either HCI command or HCI event.
1625          *
1626          * It reads the command and its expected event from the firmware file,
1627          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1628          * the returned event is compared with the event read from the firmware
1629          * file and it will continue until all the messages are downloaded to
1630          * the controller.
1631          *
1632          * Once the firmware patching is completed successfully,
1633          * the manufacturer mode is disabled with reset and activating the
1634          * downloaded patch.
1635          *
1636          * If the firmware patching fails, the manufacturer mode is
1637          * disabled with reset and deactivating the patch.
1638          *
1639          * If the default patch file is used, no reset is done when disabling
1640          * the manufacturer.
1641          */
1642         while (fw->size > fw_ptr - fw->data) {
1643                 int ret;
1644 
1645                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1646                                                  &disable_patch);
1647                 if (ret < 0)
1648                         goto exit_mfg_deactivate;
1649         }
1650 
1651         release_firmware(fw);
1652 
1653         if (disable_patch)
1654                 goto exit_mfg_disable;
1655 
1656         /* Patching completed successfully and disable the manufacturer mode
1657          * with reset and activate the downloaded firmware patches.
1658          */
1659         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1660                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1661         if (IS_ERR(skb)) {
1662                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1663                        hdev->name, PTR_ERR(skb));
1664                 return PTR_ERR(skb);
1665         }
1666         kfree_skb(skb);
1667 
1668         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1669                 hdev->name);
1670 
1671         btintel_check_bdaddr(hdev);
1672         return 0;
1673 
1674 exit_mfg_disable:
1675         /* Disable the manufacturer mode without reset */
1676         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1677                              HCI_INIT_TIMEOUT);
1678         if (IS_ERR(skb)) {
1679                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1680                        hdev->name, PTR_ERR(skb));
1681                 return PTR_ERR(skb);
1682         }
1683         kfree_skb(skb);
1684 
1685         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1686 
1687         btintel_check_bdaddr(hdev);
1688         return 0;
1689 
1690 exit_mfg_deactivate:
1691         release_firmware(fw);
1692 
1693         /* Patching failed. Disable the manufacturer mode with reset and
1694          * deactivate the downloaded firmware patches.
1695          */
1696         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1697                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1698         if (IS_ERR(skb)) {
1699                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1700                        hdev->name, PTR_ERR(skb));
1701                 return PTR_ERR(skb);
1702         }
1703         kfree_skb(skb);
1704 
1705         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1706                 hdev->name);
1707 
1708         btintel_check_bdaddr(hdev);
1709         return 0;
1710 }
1711 
1712 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1713 {
1714         struct sk_buff *skb;
1715         struct hci_event_hdr *hdr;
1716         struct hci_ev_cmd_complete *evt;
1717 
1718         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1719         if (!skb)
1720                 return -ENOMEM;
1721 
1722         hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
1723         hdr->evt = HCI_EV_CMD_COMPLETE;
1724         hdr->plen = sizeof(*evt) + 1;
1725 
1726         evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
1727         evt->ncmd = 0x01;
1728         evt->opcode = cpu_to_le16(opcode);
1729 
1730         *skb_put(skb, 1) = 0x00;
1731 
1732         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
1733 
1734         return hci_recv_frame(hdev, skb);
1735 }
1736 
1737 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1738                                  int count)
1739 {
1740         /* When the device is in bootloader mode, then it can send
1741          * events via the bulk endpoint. These events are treated the
1742          * same way as the ones received from the interrupt endpoint.
1743          */
1744         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1745                 return btusb_recv_intr(data, buffer, count);
1746 
1747         return btusb_recv_bulk(data, buffer, count);
1748 }
1749 
1750 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1751                                unsigned int len)
1752 {
1753         const struct intel_bootup *evt = ptr;
1754 
1755         if (len != sizeof(*evt))
1756                 return;
1757 
1758         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1759                 smp_mb__after_atomic();
1760                 wake_up_bit(&data->flags, BTUSB_BOOTING);
1761         }
1762 }
1763 
1764 static void btusb_intel_secure_send_result(struct btusb_data *data,
1765                                            const void *ptr, unsigned int len)
1766 {
1767         const struct intel_secure_send_result *evt = ptr;
1768 
1769         if (len != sizeof(*evt))
1770                 return;
1771 
1772         if (evt->result)
1773                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1774 
1775         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1776             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1777                 smp_mb__after_atomic();
1778                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1779         }
1780 }
1781 
1782 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1783 {
1784         struct btusb_data *data = hci_get_drvdata(hdev);
1785 
1786         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1787                 struct hci_event_hdr *hdr = (void *)skb->data;
1788 
1789                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1790                     hdr->plen > 0) {
1791                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1792                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1793 
1794                         switch (skb->data[2]) {
1795                         case 0x02:
1796                                 /* When switching to the operational firmware
1797                                  * the device sends a vendor specific event
1798                                  * indicating that the bootup completed.
1799                                  */
1800                                 btusb_intel_bootup(data, ptr, len);
1801                                 break;
1802                         case 0x06:
1803                                 /* When the firmware loading completes the
1804                                  * device sends out a vendor specific event
1805                                  * indicating the result of the firmware
1806                                  * loading.
1807                                  */
1808                                 btusb_intel_secure_send_result(data, ptr, len);
1809                                 break;
1810                         }
1811                 }
1812         }
1813 
1814         return hci_recv_frame(hdev, skb);
1815 }
1816 
1817 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1818 {
1819         struct btusb_data *data = hci_get_drvdata(hdev);
1820         struct urb *urb;
1821 
1822         BT_DBG("%s", hdev->name);
1823 
1824         if (!test_bit(HCI_RUNNING, &hdev->flags))
1825                 return -EBUSY;
1826 
1827         switch (bt_cb(skb)->pkt_type) {
1828         case HCI_COMMAND_PKT:
1829                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1830                         struct hci_command_hdr *cmd = (void *)skb->data;
1831                         __u16 opcode = le16_to_cpu(cmd->opcode);
1832 
1833                         /* When in bootloader mode and the command 0xfc09
1834                          * is received, it needs to be send down the
1835                          * bulk endpoint. So allocate a bulk URB instead.
1836                          */
1837                         if (opcode == 0xfc09)
1838                                 urb = alloc_bulk_urb(hdev, skb);
1839                         else
1840                                 urb = alloc_ctrl_urb(hdev, skb);
1841 
1842                         /* When the 0xfc01 command is issued to boot into
1843                          * the operational firmware, it will actually not
1844                          * send a command complete event. To keep the flow
1845                          * control working inject that event here.
1846                          */
1847                         if (opcode == 0xfc01)
1848                                 inject_cmd_complete(hdev, opcode);
1849                 } else {
1850                         urb = alloc_ctrl_urb(hdev, skb);
1851                 }
1852                 if (IS_ERR(urb))
1853                         return PTR_ERR(urb);
1854 
1855                 hdev->stat.cmd_tx++;
1856                 return submit_or_queue_tx_urb(hdev, urb);
1857 
1858         case HCI_ACLDATA_PKT:
1859                 urb = alloc_bulk_urb(hdev, skb);
1860                 if (IS_ERR(urb))
1861                         return PTR_ERR(urb);
1862 
1863                 hdev->stat.acl_tx++;
1864                 return submit_or_queue_tx_urb(hdev, urb);
1865 
1866         case HCI_SCODATA_PKT:
1867                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1868                         return -ENODEV;
1869 
1870                 urb = alloc_isoc_urb(hdev, skb);
1871                 if (IS_ERR(urb))
1872                         return PTR_ERR(urb);
1873 
1874                 hdev->stat.sco_tx++;
1875                 return submit_tx_urb(hdev, urb);
1876         }
1877 
1878         return -EILSEQ;
1879 }
1880 
1881 static int btusb_intel_secure_send(struct hci_dev *hdev, u8 fragment_type,
1882                                    u32 plen, const void *param)
1883 {
1884         while (plen > 0) {
1885                 struct sk_buff *skb;
1886                 u8 cmd_param[253], fragment_len = (plen > 252) ? 252 : plen;
1887 
1888                 cmd_param[0] = fragment_type;
1889                 memcpy(cmd_param + 1, param, fragment_len);
1890 
1891                 skb = __hci_cmd_sync(hdev, 0xfc09, fragment_len + 1,
1892                                      cmd_param, HCI_INIT_TIMEOUT);
1893                 if (IS_ERR(skb))
1894                         return PTR_ERR(skb);
1895 
1896                 kfree_skb(skb);
1897 
1898                 plen -= fragment_len;
1899                 param += fragment_len;
1900         }
1901 
1902         return 0;
1903 }
1904 
1905 static void btusb_intel_version_info(struct hci_dev *hdev,
1906                                      struct intel_version *ver)
1907 {
1908         const char *variant;
1909 
1910         switch (ver->fw_variant) {
1911         case 0x06:
1912                 variant = "Bootloader";
1913                 break;
1914         case 0x23:
1915                 variant = "Firmware";
1916                 break;
1917         default:
1918                 return;
1919         }
1920 
1921         BT_INFO("%s: %s revision %u.%u build %u week %u %u", hdev->name,
1922                 variant, ver->fw_revision >> 4, ver->fw_revision & 0x0f,
1923                 ver->fw_build_num, ver->fw_build_ww, 2000 + ver->fw_build_yy);
1924 }
1925 
1926 static int btusb_setup_intel_new(struct hci_dev *hdev)
1927 {
1928         static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
1929                                           0x00, 0x08, 0x04, 0x00 };
1930         struct btusb_data *data = hci_get_drvdata(hdev);
1931         struct sk_buff *skb;
1932         struct intel_version *ver;
1933         struct intel_boot_params *params;
1934         const struct firmware *fw;
1935         const u8 *fw_ptr;
1936         u32 frag_len;
1937         char fwname[64];
1938         ktime_t calltime, delta, rettime;
1939         unsigned long long duration;
1940         int err;
1941 
1942         BT_DBG("%s", hdev->name);
1943 
1944         calltime = ktime_get();
1945 
1946         /* Read the Intel version information to determine if the device
1947          * is in bootloader mode or if it already has operational firmware
1948          * loaded.
1949          */
1950         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1951         if (IS_ERR(skb)) {
1952                 BT_ERR("%s: Reading Intel version information failed (%ld)",
1953                        hdev->name, PTR_ERR(skb));
1954                 return PTR_ERR(skb);
1955         }
1956 
1957         if (skb->len != sizeof(*ver)) {
1958                 BT_ERR("%s: Intel version event size mismatch", hdev->name);
1959                 kfree_skb(skb);
1960                 return -EILSEQ;
1961         }
1962 
1963         ver = (struct intel_version *)skb->data;
1964 
1965         /* The hardware platform number has a fixed value of 0x37 and
1966          * for now only accept this single value.
1967          */
1968         if (ver->hw_platform != 0x37) {
1969                 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
1970                        hdev->name, ver->hw_platform);
1971                 kfree_skb(skb);
1972                 return -EINVAL;
1973         }
1974 
1975         /* At the moment only the hardware variant iBT 3.0 (LnP/SfP) is
1976          * supported by this firmware loading method. This check has been
1977          * put in place to ensure correct forward compatibility options
1978          * when newer hardware variants come along.
1979          */
1980         if (ver->hw_variant != 0x0b) {
1981                 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
1982                        hdev->name, ver->hw_variant);
1983                 kfree_skb(skb);
1984                 return -EINVAL;
1985         }
1986 
1987         btusb_intel_version_info(hdev, ver);
1988 
1989         /* The firmware variant determines if the device is in bootloader
1990          * mode or is running operational firmware. The value 0x06 identifies
1991          * the bootloader and the value 0x23 identifies the operational
1992          * firmware.
1993          *
1994          * When the operational firmware is already present, then only
1995          * the check for valid Bluetooth device address is needed. This
1996          * determines if the device will be added as configured or
1997          * unconfigured controller.
1998          *
1999          * It is not possible to use the Secure Boot Parameters in this
2000          * case since that command is only available in bootloader mode.
2001          */
2002         if (ver->fw_variant == 0x23) {
2003                 kfree_skb(skb);
2004                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2005                 btintel_check_bdaddr(hdev);
2006                 return 0;
2007         }
2008 
2009         /* If the device is not in bootloader mode, then the only possible
2010          * choice is to return an error and abort the device initialization.
2011          */
2012         if (ver->fw_variant != 0x06) {
2013                 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2014                        hdev->name, ver->fw_variant);
2015                 kfree_skb(skb);
2016                 return -ENODEV;
2017         }
2018 
2019         kfree_skb(skb);
2020 
2021         /* Read the secure boot parameters to identify the operating
2022          * details of the bootloader.
2023          */
2024         skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2025         if (IS_ERR(skb)) {
2026                 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2027                        hdev->name, PTR_ERR(skb));
2028                 return PTR_ERR(skb);
2029         }
2030 
2031         if (skb->len != sizeof(*params)) {
2032                 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2033                 kfree_skb(skb);
2034                 return -EILSEQ;
2035         }
2036 
2037         params = (struct intel_boot_params *)skb->data;
2038 
2039         BT_INFO("%s: Device revision is %u", hdev->name,
2040                 le16_to_cpu(params->dev_revid));
2041 
2042         BT_INFO("%s: Secure boot is %s", hdev->name,
2043                 params->secure_boot ? "enabled" : "disabled");
2044 
2045         BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2046                 params->min_fw_build_nn, params->min_fw_build_cw,
2047                 2000 + params->min_fw_build_yy);
2048 
2049         /* It is required that every single firmware fragment is acknowledged
2050          * with a command complete event. If the boot parameters indicate
2051          * that this bootloader does not send them, then abort the setup.
2052          */
2053         if (params->limited_cce != 0x00) {
2054                 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2055                        hdev->name, params->limited_cce);
2056                 kfree_skb(skb);
2057                 return -EINVAL;
2058         }
2059 
2060         /* If the OTP has no valid Bluetooth device address, then there will
2061          * also be no valid address for the operational firmware.
2062          */
2063         if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2064                 BT_INFO("%s: No device address configured", hdev->name);
2065                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2066         }
2067 
2068         /* With this Intel bootloader only the hardware variant and device
2069          * revision information are used to select the right firmware.
2070          *
2071          * Currently this bootloader support is limited to hardware variant
2072          * iBT 3.0 (LnP/SfP) which is identified by the value 11 (0x0b).
2073          */
2074         snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.sfi",
2075                  le16_to_cpu(params->dev_revid));
2076 
2077         err = request_firmware(&fw, fwname, &hdev->dev);
2078         if (err < 0) {
2079                 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2080                        hdev->name, err);
2081                 kfree_skb(skb);
2082                 return err;
2083         }
2084 
2085         BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2086 
2087         /* Save the DDC file name for later use to apply once the firmware
2088          * downloading is done.
2089          */
2090         snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.ddc",
2091                  le16_to_cpu(params->dev_revid));
2092 
2093         kfree_skb(skb);
2094 
2095         if (fw->size < 644) {
2096                 BT_ERR("%s: Invalid size of firmware file (%zu)",
2097                        hdev->name, fw->size);
2098                 err = -EBADF;
2099                 goto done;
2100         }
2101 
2102         set_bit(BTUSB_DOWNLOADING, &data->flags);
2103 
2104         /* Start the firmware download transaction with the Init fragment
2105          * represented by the 128 bytes of CSS header.
2106          */
2107         err = btusb_intel_secure_send(hdev, 0x00, 128, fw->data);
2108         if (err < 0) {
2109                 BT_ERR("%s: Failed to send firmware header (%d)",
2110                        hdev->name, err);
2111                 goto done;
2112         }
2113 
2114         /* Send the 256 bytes of public key information from the firmware
2115          * as the PKey fragment.
2116          */
2117         err = btusb_intel_secure_send(hdev, 0x03, 256, fw->data + 128);
2118         if (err < 0) {
2119                 BT_ERR("%s: Failed to send firmware public key (%d)",
2120                        hdev->name, err);
2121                 goto done;
2122         }
2123 
2124         /* Send the 256 bytes of signature information from the firmware
2125          * as the Sign fragment.
2126          */
2127         err = btusb_intel_secure_send(hdev, 0x02, 256, fw->data + 388);
2128         if (err < 0) {
2129                 BT_ERR("%s: Failed to send firmware signature (%d)",
2130                        hdev->name, err);
2131                 goto done;
2132         }
2133 
2134         fw_ptr = fw->data + 644;
2135         frag_len = 0;
2136 
2137         while (fw_ptr - fw->data < fw->size) {
2138                 struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
2139 
2140                 frag_len += sizeof(*cmd) + cmd->plen;
2141 
2142                 /* The paramter length of the secure send command requires
2143                  * a 4 byte alignment. It happens so that the firmware file
2144                  * contains proper Intel_NOP commands to align the fragments
2145                  * as needed.
2146                  *
2147                  * Send set of commands with 4 byte alignment from the
2148                  * firmware data buffer as a single Data fragement.
2149                  */
2150                 if (!(frag_len % 4)) {
2151                         err = btusb_intel_secure_send(hdev, 0x01, frag_len,
2152                                                       fw_ptr);
2153                         if (err < 0) {
2154                                 BT_ERR("%s: Failed to send firmware data (%d)",
2155                                        hdev->name, err);
2156                                 goto done;
2157                         }
2158 
2159                         fw_ptr += frag_len;
2160                         frag_len = 0;
2161                 }
2162         }
2163 
2164         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2165 
2166         BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2167 
2168         /* Before switching the device into operational mode and with that
2169          * booting the loaded firmware, wait for the bootloader notification
2170          * that all fragments have been successfully received.
2171          *
2172          * When the event processing receives the notification, then the
2173          * BTUSB_DOWNLOADING flag will be cleared.
2174          *
2175          * The firmware loading should not take longer than 5 seconds
2176          * and thus just timeout if that happens and fail the setup
2177          * of this device.
2178          */
2179         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2180                                   TASK_INTERRUPTIBLE,
2181                                   msecs_to_jiffies(5000));
2182         if (err == 1) {
2183                 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2184                 err = -EINTR;
2185                 goto done;
2186         }
2187 
2188         if (err) {
2189                 BT_ERR("%s: Firmware loading timeout", hdev->name);
2190                 err = -ETIMEDOUT;
2191                 goto done;
2192         }
2193 
2194         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2195                 BT_ERR("%s: Firmware loading failed", hdev->name);
2196                 err = -ENOEXEC;
2197                 goto done;
2198         }
2199 
2200         rettime = ktime_get();
2201         delta = ktime_sub(rettime, calltime);
2202         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2203 
2204         BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2205 
2206 done:
2207         release_firmware(fw);
2208 
2209         if (err < 0)
2210                 return err;
2211 
2212         calltime = ktime_get();
2213 
2214         set_bit(BTUSB_BOOTING, &data->flags);
2215 
2216         skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2217                              HCI_INIT_TIMEOUT);
2218         if (IS_ERR(skb))
2219                 return PTR_ERR(skb);
2220 
2221         kfree_skb(skb);
2222 
2223         /* The bootloader will not indicate when the device is ready. This
2224          * is done by the operational firmware sending bootup notification.
2225          *
2226          * Booting into operational firmware should not take longer than
2227          * 1 second. However if that happens, then just fail the setup
2228          * since something went wrong.
2229          */
2230         BT_INFO("%s: Waiting for device to boot", hdev->name);
2231 
2232         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2233                                   TASK_INTERRUPTIBLE,
2234                                   msecs_to_jiffies(1000));
2235 
2236         if (err == 1) {
2237                 BT_ERR("%s: Device boot interrupted", hdev->name);
2238                 return -EINTR;
2239         }
2240 
2241         if (err) {
2242                 BT_ERR("%s: Device boot timeout", hdev->name);
2243                 return -ETIMEDOUT;
2244         }
2245 
2246         rettime = ktime_get();
2247         delta = ktime_sub(rettime, calltime);
2248         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2249 
2250         BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2251 
2252         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2253 
2254         /* Once the device is running in operational mode, it needs to apply
2255          * the device configuration (DDC) parameters.
2256          *
2257          * The device can work without DDC parameters, so even if it fails
2258          * to load the file, no need to fail the setup.
2259          */
2260         err = request_firmware_direct(&fw, fwname, &hdev->dev);
2261         if (err < 0)
2262                 return 0;
2263 
2264         BT_INFO("%s: Found Intel DDC parameters: %s", hdev->name, fwname);
2265 
2266         fw_ptr = fw->data;
2267 
2268         /* DDC file contains one or more DDC structure which has
2269          * Length (1 byte), DDC ID (2 bytes), and DDC value (Length - 2).
2270          */
2271         while (fw->size > fw_ptr - fw->data) {
2272                 u8 cmd_plen = fw_ptr[0] + sizeof(u8);
2273 
2274                 skb = __hci_cmd_sync(hdev, 0xfc8b, cmd_plen, fw_ptr,
2275                                      HCI_INIT_TIMEOUT);
2276                 if (IS_ERR(skb)) {
2277                         BT_ERR("%s: Failed to send Intel_Write_DDC (%ld)",
2278                                hdev->name, PTR_ERR(skb));
2279                         release_firmware(fw);
2280                         return PTR_ERR(skb);
2281                 }
2282 
2283                 fw_ptr += cmd_plen;
2284                 kfree_skb(skb);
2285         }
2286 
2287         release_firmware(fw);
2288 
2289         BT_INFO("%s: Applying Intel DDC parameters completed", hdev->name);
2290 
2291         return 0;
2292 }
2293 
2294 static void btusb_hw_error_intel(struct hci_dev *hdev, u8 code)
2295 {
2296         struct sk_buff *skb;
2297         u8 type = 0x00;
2298 
2299         BT_ERR("%s: Hardware error 0x%2.2x", hdev->name, code);
2300 
2301         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2302         if (IS_ERR(skb)) {
2303                 BT_ERR("%s: Reset after hardware error failed (%ld)",
2304                        hdev->name, PTR_ERR(skb));
2305                 return;
2306         }
2307         kfree_skb(skb);
2308 
2309         skb = __hci_cmd_sync(hdev, 0xfc22, 1, &type, HCI_INIT_TIMEOUT);
2310         if (IS_ERR(skb)) {
2311                 BT_ERR("%s: Retrieving Intel exception info failed (%ld)",
2312                        hdev->name, PTR_ERR(skb));
2313                 return;
2314         }
2315 
2316         if (skb->len != 13) {
2317                 BT_ERR("%s: Exception info size mismatch", hdev->name);
2318                 kfree_skb(skb);
2319                 return;
2320         }
2321 
2322         BT_ERR("%s: Exception info %s", hdev->name, (char *)(skb->data + 1));
2323 
2324         kfree_skb(skb);
2325 }
2326 
2327 static int btusb_shutdown_intel(struct hci_dev *hdev)
2328 {
2329         struct sk_buff *skb;
2330         long ret;
2331 
2332         /* Some platforms have an issue with BT LED when the interface is
2333          * down or BT radio is turned off, which takes 5 seconds to BT LED
2334          * goes off. This command turns off the BT LED immediately.
2335          */
2336         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2337         if (IS_ERR(skb)) {
2338                 ret = PTR_ERR(skb);
2339                 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2340                        hdev->name, ret);
2341                 return ret;
2342         }
2343         kfree_skb(skb);
2344 
2345         return 0;
2346 }
2347 
2348 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2349                                     const bdaddr_t *bdaddr)
2350 {
2351         struct sk_buff *skb;
2352         u8 buf[8];
2353         long ret;
2354 
2355         buf[0] = 0xfe;
2356         buf[1] = sizeof(bdaddr_t);
2357         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2358 
2359         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2360         if (IS_ERR(skb)) {
2361                 ret = PTR_ERR(skb);
2362                 BT_ERR("%s: changing Marvell device address failed (%ld)",
2363                        hdev->name, ret);
2364                 return ret;
2365         }
2366         kfree_skb(skb);
2367 
2368         return 0;
2369 }
2370 
2371 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2372                                     const bdaddr_t *bdaddr)
2373 {
2374         struct sk_buff *skb;
2375         u8 buf[10];
2376         long ret;
2377 
2378         buf[0] = 0x01;
2379         buf[1] = 0x01;
2380         buf[2] = 0x00;
2381         buf[3] = sizeof(bdaddr_t);
2382         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2383 
2384         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2385         if (IS_ERR(skb)) {
2386                 ret = PTR_ERR(skb);
2387                 BT_ERR("%s: Change address command failed (%ld)",
2388                        hdev->name, ret);
2389                 return ret;
2390         }
2391         kfree_skb(skb);
2392 
2393         return 0;
2394 }
2395 
2396 #define QCA_DFU_PACKET_LEN      4096
2397 
2398 #define QCA_GET_TARGET_VERSION  0x09
2399 #define QCA_CHECK_STATUS        0x05
2400 #define QCA_DFU_DOWNLOAD        0x01
2401 
2402 #define QCA_SYSCFG_UPDATED      0x40
2403 #define QCA_PATCH_UPDATED       0x80
2404 #define QCA_DFU_TIMEOUT         3000
2405 
2406 struct qca_version {
2407         __le32  rom_version;
2408         __le32  patch_version;
2409         __le32  ram_version;
2410         __le32  ref_clock;
2411         __u8    reserved[4];
2412 } __packed;
2413 
2414 struct qca_rampatch_version {
2415         __le16  rom_version;
2416         __le16  patch_version;
2417 } __packed;
2418 
2419 struct qca_device_info {
2420         u32     rom_version;
2421         u8      rampatch_hdr;   /* length of header in rampatch */
2422         u8      nvm_hdr;        /* length of header in NVM */
2423         u8      ver_offset;     /* offset of version structure in rampatch */
2424 };
2425 
2426 static const struct qca_device_info qca_devices_table[] = {
2427         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2428         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2429         { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2430         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2431         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2432         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2433 };
2434 
2435 static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request,
2436                                      void *data, u16 size)
2437 {
2438         struct btusb_data *btdata = hci_get_drvdata(hdev);
2439         struct usb_device *udev = btdata->udev;
2440         int pipe, err;
2441         u8 *buf;
2442 
2443         buf = kmalloc(size, GFP_KERNEL);
2444         if (!buf)
2445                 return -ENOMEM;
2446 
2447         /* Found some of USB hosts have IOT issues with ours so that we should
2448          * not wait until HCI layer is ready.
2449          */
2450         pipe = usb_rcvctrlpipe(udev, 0);
2451         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2452                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2453         if (err < 0) {
2454                 BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err);
2455                 goto done;
2456         }
2457 
2458         memcpy(data, buf, size);
2459 
2460 done:
2461         kfree(buf);
2462 
2463         return err;
2464 }
2465 
2466 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2467                                        const struct firmware *firmware,
2468                                        size_t hdr_size)
2469 {
2470         struct btusb_data *btdata = hci_get_drvdata(hdev);
2471         struct usb_device *udev = btdata->udev;
2472         size_t count, size, sent = 0;
2473         int pipe, len, err;
2474         u8 *buf;
2475 
2476         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2477         if (!buf)
2478                 return -ENOMEM;
2479 
2480         count = firmware->size;
2481 
2482         size = min_t(size_t, count, hdr_size);
2483         memcpy(buf, firmware->data, size);
2484 
2485         /* USB patches should go down to controller through USB path
2486          * because binary format fits to go down through USB channel.
2487          * USB control path is for patching headers and USB bulk is for
2488          * patch body.
2489          */
2490         pipe = usb_sndctrlpipe(udev, 0);
2491         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2492                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2493         if (err < 0) {
2494                 BT_ERR("%s: Failed to send headers (%d)", hdev->name, err);
2495                 goto done;
2496         }
2497 
2498         sent += size;
2499         count -= size;
2500 
2501         while (count) {
2502                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2503 
2504                 memcpy(buf, firmware->data + sent, size);
2505 
2506                 pipe = usb_sndbulkpipe(udev, 0x02);
2507                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2508                                    QCA_DFU_TIMEOUT);
2509                 if (err < 0) {
2510                         BT_ERR("%s: Failed to send body at %zd of %zd (%d)",
2511                                hdev->name, sent, firmware->size, err);
2512                         break;
2513                 }
2514 
2515                 if (size != len) {
2516                         BT_ERR("%s: Failed to get bulk buffer", hdev->name);
2517                         err = -EILSEQ;
2518                         break;
2519                 }
2520 
2521                 sent  += size;
2522                 count -= size;
2523         }
2524 
2525 done:
2526         kfree(buf);
2527         return err;
2528 }
2529 
2530 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2531                                          struct qca_version *ver,
2532                                          const struct qca_device_info *info)
2533 {
2534         struct qca_rampatch_version *rver;
2535         const struct firmware *fw;
2536         u32 ver_rom, ver_patch;
2537         u16 rver_rom, rver_patch;
2538         char fwname[64];
2539         int err;
2540 
2541         ver_rom = le32_to_cpu(ver->rom_version);
2542         ver_patch = le32_to_cpu(ver->patch_version);
2543 
2544         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2545 
2546         err = request_firmware(&fw, fwname, &hdev->dev);
2547         if (err) {
2548                 BT_ERR("%s: failed to request rampatch file: %s (%d)",
2549                        hdev->name, fwname, err);
2550                 return err;
2551         }
2552 
2553         BT_INFO("%s: using rampatch file: %s", hdev->name, fwname);
2554 
2555         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2556         rver_rom = le16_to_cpu(rver->rom_version);
2557         rver_patch = le16_to_cpu(rver->patch_version);
2558 
2559         BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x "
2560                 "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom,
2561                 ver_patch);
2562 
2563         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2564                 BT_ERR("%s: rampatch file version did not match with firmware",
2565                        hdev->name);
2566                 err = -EINVAL;
2567                 goto done;
2568         }
2569 
2570         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2571 
2572 done:
2573         release_firmware(fw);
2574 
2575         return err;
2576 }
2577 
2578 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2579                                     struct qca_version *ver,
2580                                     const struct qca_device_info *info)
2581 {
2582         const struct firmware *fw;
2583         char fwname[64];
2584         int err;
2585 
2586         snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2587                  le32_to_cpu(ver->rom_version));
2588 
2589         err = request_firmware(&fw, fwname, &hdev->dev);
2590         if (err) {
2591                 BT_ERR("%s: failed to request NVM file: %s (%d)",
2592                        hdev->name, fwname, err);
2593                 return err;
2594         }
2595 
2596         BT_INFO("%s: using NVM file: %s", hdev->name, fwname);
2597 
2598         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2599 
2600         release_firmware(fw);
2601 
2602         return err;
2603 }
2604 
2605 static int btusb_setup_qca(struct hci_dev *hdev)
2606 {
2607         const struct qca_device_info *info = NULL;
2608         struct qca_version ver;
2609         u32 ver_rom;
2610         u8 status;
2611         int i, err;
2612 
2613         err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver,
2614                                         sizeof(ver));
2615         if (err < 0)
2616                 return err;
2617 
2618         ver_rom = le32_to_cpu(ver.rom_version);
2619         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2620                 if (ver_rom == qca_devices_table[i].rom_version)
2621                         info = &qca_devices_table[i];
2622         }
2623         if (!info) {
2624                 BT_ERR("%s: don't support firmware rome 0x%x", hdev->name,
2625                        ver_rom);
2626                 return -ENODEV;
2627         }
2628 
2629         err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status,
2630                                         sizeof(status));
2631         if (err < 0)
2632                 return err;
2633 
2634         if (!(status & QCA_PATCH_UPDATED)) {
2635                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2636                 if (err < 0)
2637                         return err;
2638         }
2639 
2640         if (!(status & QCA_SYSCFG_UPDATED)) {
2641                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2642                 if (err < 0)
2643                         return err;
2644         }
2645 
2646         return 0;
2647 }
2648 
2649 static int btusb_probe(struct usb_interface *intf,
2650                        const struct usb_device_id *id)
2651 {
2652         struct usb_endpoint_descriptor *ep_desc;
2653         struct btusb_data *data;
2654         struct hci_dev *hdev;
2655         int i, err;
2656 
2657         BT_DBG("intf %p id %p", intf, id);
2658 
2659         /* interface numbers are hardcoded in the spec */
2660         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
2661                 return -ENODEV;
2662 
2663         if (!id->driver_info) {
2664                 const struct usb_device_id *match;
2665 
2666                 match = usb_match_id(intf, blacklist_table);
2667                 if (match)
2668                         id = match;
2669         }
2670 
2671         if (id->driver_info == BTUSB_IGNORE)
2672                 return -ENODEV;
2673 
2674         if (id->driver_info & BTUSB_ATH3012) {
2675                 struct usb_device *udev = interface_to_usbdev(intf);
2676 
2677                 /* Old firmware would otherwise let ath3k driver load
2678                  * patch and sysconfig files */
2679                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2680                         return -ENODEV;
2681         }
2682 
2683         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2684         if (!data)
2685                 return -ENOMEM;
2686 
2687         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2688                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2689 
2690                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2691                         data->intr_ep = ep_desc;
2692                         continue;
2693                 }
2694 
2695                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2696                         data->bulk_tx_ep = ep_desc;
2697                         continue;
2698                 }
2699 
2700                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2701                         data->bulk_rx_ep = ep_desc;
2702                         continue;
2703                 }
2704         }
2705 
2706         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2707                 return -ENODEV;
2708 
2709         if (id->driver_info & BTUSB_AMP) {
2710                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2711                 data->cmdreq = 0x2b;
2712         } else {
2713                 data->cmdreq_type = USB_TYPE_CLASS;
2714                 data->cmdreq = 0x00;
2715         }
2716 
2717         data->udev = interface_to_usbdev(intf);
2718         data->intf = intf;
2719 
2720         INIT_WORK(&data->work, btusb_work);
2721         INIT_WORK(&data->waker, btusb_waker);
2722         init_usb_anchor(&data->deferred);
2723         init_usb_anchor(&data->tx_anchor);
2724         spin_lock_init(&data->txlock);
2725 
2726         init_usb_anchor(&data->intr_anchor);
2727         init_usb_anchor(&data->bulk_anchor);
2728         init_usb_anchor(&data->isoc_anchor);
2729         spin_lock_init(&data->rxlock);
2730 
2731         if (id->driver_info & BTUSB_INTEL_NEW) {
2732                 data->recv_event = btusb_recv_event_intel;
2733                 data->recv_bulk = btusb_recv_bulk_intel;
2734                 set_bit(BTUSB_BOOTLOADER, &data->flags);
2735         } else {
2736                 data->recv_event = hci_recv_frame;
2737                 data->recv_bulk = btusb_recv_bulk;
2738         }
2739 
2740         hdev = hci_alloc_dev();
2741         if (!hdev)
2742                 return -ENOMEM;
2743 
2744         hdev->bus = HCI_USB;
2745         hci_set_drvdata(hdev, data);
2746 
2747         if (id->driver_info & BTUSB_AMP)
2748                 hdev->dev_type = HCI_AMP;
2749         else
2750                 hdev->dev_type = HCI_BREDR;
2751 
2752         data->hdev = hdev;
2753 
2754         SET_HCIDEV_DEV(hdev, &intf->dev);
2755 
2756         hdev->open   = btusb_open;
2757         hdev->close  = btusb_close;
2758         hdev->flush  = btusb_flush;
2759         hdev->send   = btusb_send_frame;
2760         hdev->notify = btusb_notify;
2761 
2762         if (id->driver_info & BTUSB_BCM92035)
2763                 hdev->setup = btusb_setup_bcm92035;
2764 
2765 #ifdef CONFIG_BT_HCIBTUSB_BCM
2766         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2767                 hdev->setup = btbcm_setup_patchram;
2768                 hdev->set_bdaddr = btbcm_set_bdaddr;
2769         }
2770 
2771         if (id->driver_info & BTUSB_BCM_APPLE)
2772                 hdev->setup = btbcm_setup_apple;
2773 #endif
2774 
2775         if (id->driver_info & BTUSB_INTEL) {
2776                 hdev->setup = btusb_setup_intel;
2777                 hdev->shutdown = btusb_shutdown_intel;
2778                 hdev->set_bdaddr = btintel_set_bdaddr;
2779                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2780                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2781         }
2782 
2783         if (id->driver_info & BTUSB_INTEL_NEW) {
2784                 hdev->send = btusb_send_frame_intel;
2785                 hdev->setup = btusb_setup_intel_new;
2786                 hdev->hw_error = btusb_hw_error_intel;
2787                 hdev->set_bdaddr = btintel_set_bdaddr;
2788                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2789         }
2790 
2791         if (id->driver_info & BTUSB_MARVELL)
2792                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2793 
2794         if (id->driver_info & BTUSB_SWAVE) {
2795                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
2796                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
2797         }
2798 
2799         if (id->driver_info & BTUSB_INTEL_BOOT)
2800                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2801 
2802         if (id->driver_info & BTUSB_ATH3012) {
2803                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2804                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2805                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2806         }
2807 
2808         if (id->driver_info & BTUSB_QCA_ROME) {
2809                 data->setup_on_usb = btusb_setup_qca;
2810                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2811         }
2812 
2813 #ifdef CONFIG_BT_HCIBTUSB_RTL
2814         if (id->driver_info & BTUSB_REALTEK) {
2815                 hdev->setup = btrtl_setup_realtek;
2816 
2817                 /* Realtek devices lose their updated firmware over suspend,
2818                  * but the USB hub doesn't notice any status change.
2819                  * Explicitly request a device reset on resume.
2820                  */
2821                 set_bit(BTUSB_RESET_RESUME, &data->flags);
2822         }
2823 #endif
2824 
2825         if (id->driver_info & BTUSB_AMP) {
2826                 /* AMP controllers do not support SCO packets */
2827                 data->isoc = NULL;
2828         } else {
2829                 /* Interface numbers are hardcoded in the specification */
2830                 data->isoc = usb_ifnum_to_if(data->udev, 1);
2831         }
2832 
2833         if (!reset)
2834                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2835 
2836         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2837                 if (!disable_scofix)
2838                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2839         }
2840 
2841         if (id->driver_info & BTUSB_BROKEN_ISOC)
2842                 data->isoc = NULL;
2843 
2844         if (id->driver_info & BTUSB_DIGIANSWER) {
2845                 data->cmdreq_type = USB_TYPE_VENDOR;
2846                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2847         }
2848 
2849         if (id->driver_info & BTUSB_CSR) {
2850                 struct usb_device *udev = data->udev;
2851                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
2852 
2853                 /* Old firmware would otherwise execute USB reset */
2854                 if (bcdDevice < 0x117)
2855                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2856 
2857                 /* Fake CSR devices with broken commands */
2858                 if (bcdDevice <= 0x100)
2859                         hdev->setup = btusb_setup_csr;
2860 
2861                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2862         }
2863 
2864         if (id->driver_info & BTUSB_SNIFFER) {
2865                 struct usb_device *udev = data->udev;
2866 
2867                 /* New sniffer firmware has crippled HCI interface */
2868                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
2869                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2870         }
2871 
2872         if (id->driver_info & BTUSB_INTEL_BOOT) {
2873                 /* A bug in the bootloader causes that interrupt interface is
2874                  * only enabled after receiving SetInterface(0, AltSetting=0).
2875                  */
2876                 err = usb_set_interface(data->udev, 0, 0);
2877                 if (err < 0) {
2878                         BT_ERR("failed to set interface 0, alt 0 %d", err);
2879                         hci_free_dev(hdev);
2880                         return err;
2881                 }
2882         }
2883 
2884         if (data->isoc) {
2885                 err = usb_driver_claim_interface(&btusb_driver,
2886                                                  data->isoc, data);
2887                 if (err < 0) {
2888                         hci_free_dev(hdev);
2889                         return err;
2890                 }
2891         }
2892 
2893         err = hci_register_dev(hdev);
2894         if (err < 0) {
2895                 hci_free_dev(hdev);
2896                 return err;
2897         }
2898 
2899         usb_set_intfdata(intf, data);
2900 
2901         return 0;
2902 }
2903 
2904 static void btusb_disconnect(struct usb_interface *intf)
2905 {
2906         struct btusb_data *data = usb_get_intfdata(intf);
2907         struct hci_dev *hdev;
2908 
2909         BT_DBG("intf %p", intf);
2910 
2911         if (!data)
2912                 return;
2913 
2914         hdev = data->hdev;
2915         usb_set_intfdata(data->intf, NULL);
2916 
2917         if (data->isoc)
2918                 usb_set_intfdata(data->isoc, NULL);
2919 
2920         hci_unregister_dev(hdev);
2921 
2922         if (intf == data->isoc)
2923                 usb_driver_release_interface(&btusb_driver, data->intf);
2924         else if (data->isoc)
2925                 usb_driver_release_interface(&btusb_driver, data->isoc);
2926 
2927         hci_free_dev(hdev);
2928 }
2929 
2930 #ifdef CONFIG_PM
2931 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
2932 {
2933         struct btusb_data *data = usb_get_intfdata(intf);
2934 
2935         BT_DBG("intf %p", intf);
2936 
2937         if (data->suspend_count++)
2938                 return 0;
2939 
2940         spin_lock_irq(&data->txlock);
2941         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
2942                 set_bit(BTUSB_SUSPENDING, &data->flags);
2943                 spin_unlock_irq(&data->txlock);
2944         } else {
2945                 spin_unlock_irq(&data->txlock);
2946                 data->suspend_count--;
2947                 return -EBUSY;
2948         }
2949 
2950         cancel_work_sync(&data->work);
2951 
2952         btusb_stop_traffic(data);
2953         usb_kill_anchored_urbs(&data->tx_anchor);
2954 
2955         /* Optionally request a device reset on resume, but only when
2956          * wakeups are disabled. If wakeups are enabled we assume the
2957          * device will stay powered up throughout suspend.
2958          */
2959         if (test_bit(BTUSB_RESET_RESUME, &data->flags) &&
2960             !device_may_wakeup(&data->udev->dev))
2961                 data->udev->reset_resume = 1;
2962 
2963         return 0;
2964 }
2965 
2966 static void play_deferred(struct btusb_data *data)
2967 {
2968         struct urb *urb;
2969         int err;
2970 
2971         while ((urb = usb_get_from_anchor(&data->deferred))) {
2972                 err = usb_submit_urb(urb, GFP_ATOMIC);
2973                 if (err < 0)
2974                         break;
2975 
2976                 data->tx_in_flight++;
2977         }
2978         usb_scuttle_anchored_urbs(&data->deferred);
2979 }
2980 
2981 static int btusb_resume(struct usb_interface *intf)
2982 {
2983         struct btusb_data *data = usb_get_intfdata(intf);
2984         struct hci_dev *hdev = data->hdev;
2985         int err = 0;
2986 
2987         BT_DBG("intf %p", intf);
2988 
2989         if (--data->suspend_count)
2990                 return 0;
2991 
2992         if (!test_bit(HCI_RUNNING, &hdev->flags))
2993                 goto done;
2994 
2995         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
2996                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
2997                 if (err < 0) {
2998                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
2999                         goto failed;
3000                 }
3001         }
3002 
3003         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3004                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3005                 if (err < 0) {
3006                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3007                         goto failed;
3008                 }
3009 
3010                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3011         }
3012 
3013         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3014                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3015                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3016                 else
3017                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
3018         }
3019 
3020         spin_lock_irq(&data->txlock);
3021         play_deferred(data);
3022         clear_bit(BTUSB_SUSPENDING, &data->flags);
3023         spin_unlock_irq(&data->txlock);
3024         schedule_work(&data->work);
3025 
3026         return 0;
3027 
3028 failed:
3029         usb_scuttle_anchored_urbs(&data->deferred);
3030 done:
3031         spin_lock_irq(&data->txlock);
3032         clear_bit(BTUSB_SUSPENDING, &data->flags);
3033         spin_unlock_irq(&data->txlock);
3034 
3035         return err;
3036 }
3037 #endif
3038 
3039 static struct usb_driver btusb_driver = {
3040         .name           = "btusb",
3041         .probe          = btusb_probe,
3042         .disconnect     = btusb_disconnect,
3043 #ifdef CONFIG_PM
3044         .suspend        = btusb_suspend,
3045         .resume         = btusb_resume,
3046 #endif
3047         .id_table       = btusb_table,
3048         .supports_autosuspend = 1,
3049         .disable_hub_initiated_lpm = 1,
3050 };
3051 
3052 module_usb_driver(btusb_driver);
3053 
3054 module_param(disable_scofix, bool, 0644);
3055 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3056 
3057 module_param(force_scofix, bool, 0644);
3058 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3059 
3060 module_param(reset, bool, 0644);
3061 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3062 
3063 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3064 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3065 MODULE_VERSION(VERSION);
3066 MODULE_LICENSE("GPL");
3067 

This page was automatically generated by LXR 0.3.1 (source).  •  Linux is a registered trademark of Linus Torvalds  •  Contact us