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Bluetooth: Fix nested sleeps
[mirror_ubuntu-hirsute-kernel.git] / drivers / bluetooth / btusb.c
CommitLineData
5e23b923
MH		 1/*
2 *
3 * Generic Bluetooth USB driver
4 *
9bfa35fe 5 * Copyright (C) 2005-2008 Marcel Holtmann <marcel@holtmann.org>
5e23b923
MH		 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
5e23b923 24#include <linux/module.h>
5e23b923 25#include <linux/usb.h>
dffd30ee 26#include <linux/firmware.h>
5e23b923
MH		 27
28#include <net/bluetooth/bluetooth.h>
29#include <net/bluetooth/hci_core.h>
30
7bee549e 31#define VERSION "0.6"
cfeb4145 32
90ab5ee9
RR		 33static bool disable_scofix;
34static bool force_scofix;
7a9d4020 35
90ab5ee9 36static bool reset = 1;
cfeb4145
MH		 37
38static struct usb_driver btusb_driver;
39
40#define BTUSB_IGNORE 0x01
7a9d4020
MH		 41#define BTUSB_DIGIANSWER 0x02
42#define BTUSB_CSR 0x04
43#define BTUSB_SNIFFER 0x08
44#define BTUSB_BCM92035 0x10
45#define BTUSB_BROKEN_ISOC 0x20
46#define BTUSB_WRONG_SCO_MTU 0x40
2d25f8b4 47#define BTUSB_ATH3012 0x80
dffd30ee 48#define BTUSB_INTEL 0x100
40df783d
MH		 49#define BTUSB_INTEL_BOOT 0x200
50#define BTUSB_BCM_PATCHRAM 0x400
ae8df494 51#define BTUSB_MARVELL 0x800
4fcef8ed 52#define BTUSB_SWAVE 0x1000
5e23b923 53
54265202 54static const struct usb_device_id btusb_table[] = {
5e23b923
MH		 55 /* Generic Bluetooth USB device */
56 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
57
1fa6535f
HR		 58 /* Apple-specific (Broadcom) devices */
59 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
60
178c059e
CYC		 61 /* MediaTek MT76x0E */
62 { USB_DEVICE(0x0e8d, 0x763f) },
63
c510eae3 64 /* Broadcom SoftSailing reporting vendor specific */
2e8b5063 65 { USB_DEVICE(0x0a5c, 0x21e1) },
c510eae3 66
3cd01976
NI		 67 /* Apple MacBookPro 7,1 */
68 { USB_DEVICE(0x05ac, 0x8213) },
69
0a79f674
CL		 70 /* Apple iMac11,1 */
71 { USB_DEVICE(0x05ac, 0x8215) },
72
9c047157
NI		 73 /* Apple MacBookPro6,2 */
74 { USB_DEVICE(0x05ac, 0x8218) },
75
3e3ede7d
EH		 76 /* Apple MacBookAir3,1, MacBookAir3,2 */
77 { USB_DEVICE(0x05ac, 0x821b) },
78
a63b723d
PAVM		 79 /* Apple MacBookAir4,1 */
80 { USB_DEVICE(0x05ac, 0x821f) },
81
88d377b6
MAP		 82 /* Apple MacBookPro8,2 */
83 { USB_DEVICE(0x05ac, 0x821a) },
84
f78b6826
JK		 85 /* Apple MacMini5,1 */
86 { USB_DEVICE(0x05ac, 0x8281) },
87
cfeb4145 88 /* AVM BlueFRITZ! USB v2.0 */
4fcef8ed 89 { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
cfeb4145
MH		 90
91 /* Bluetooth Ultraport Module from IBM */
92 { USB_DEVICE(0x04bf, 0x030a) },
93
94 /* ALPS Modules with non-standard id */
95 { USB_DEVICE(0x044e, 0x3001) },
96 { USB_DEVICE(0x044e, 0x3002) },
97
98 /* Ericsson with non-standard id */
99 { USB_DEVICE(0x0bdb, 0x1002) },
100
101 /* Canyon CN-BTU1 with HID interfaces */
7a9d4020 102 { USB_DEVICE(0x0c10, 0x0000) },
cfeb4145 103
d13431ca 104 /* Broadcom BCM20702A0 */
0b880062
AS		 105 { USB_DEVICE(0x0489, 0xe042) },
106 { USB_DEVICE(0x04ca, 0x2003) },
1ee3ff61 107 { USB_DEVICE(0x0b05, 0x17b5) },
38a172be 108 { USB_DEVICE(0x0b05, 0x17cb) },
d13431ca 109 { USB_DEVICE(0x413c, 0x8197) },
a86c02ea
F		 110 { USB_DEVICE(0x13d3, 0x3404),
111 .driver_info = BTUSB_BCM_PATCHRAM },
d13431ca 112
98514036 113 /* Foxconn - Hon Hai */
6029ddc2
HS		 114 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
115 .driver_info = BTUSB_BCM_PATCHRAM },
98514036 116
0b880062 117 /* Broadcom devices with vendor specific id */
10d4c673
PG		 118 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
119 .driver_info = BTUSB_BCM_PATCHRAM },
92c385f4 120
c2aef6e8 121 /* ASUSTek Computer - Broadcom based */
9a5abdaa
RD		 122 { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
123 .driver_info = BTUSB_BCM_PATCHRAM },
c2aef6e8 124
5bcecf32
KB		 125 /* Belkin F8065bf - Broadcom based */
126 { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
127
9113bfd8
JK		 128 /* IMC Networks - Broadcom based */
129 { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
130
40df783d 131 /* Intel Bluetooth USB Bootloader (RAM module) */
d92f2df0
MH		 132 { USB_DEVICE(0x8087, 0x0a5a),
133 .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
40df783d 134
5e23b923
MH		 135 { } /* Terminating entry */
136};
137
138MODULE_DEVICE_TABLE(usb, btusb_table);
139
54265202 140static const struct usb_device_id blacklist_table[] = {
cfeb4145
MH		 141 /* CSR BlueCore devices */
142 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
143
144 /* Broadcom BCM2033 without firmware */
145 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
146
be93112a 147 /* Atheros 3011 with sflash firmware */
0b880062
AS		 148 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
149 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
150 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
be93112a 151 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
6eda541d 152 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
2a7bcccc 153 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
be93112a 154
509e7861
CYC		 155 /* Atheros AR9285 Malbec with sflash firmware */
156 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
157
d9f51b51 158 /* Atheros 3012 with sflash firmware */
0b880062
AS		 159 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
160 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
161 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
162 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
163 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
4b552bc9 164 { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
0b880062
AS		 165 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
166 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
167 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
168 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
1fb4e09a 169 { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
0b880062
AS		 170 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
171 { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
134d3b35 172 { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
0b880062
AS		 173 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
174 { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
89d2975f 175 { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
a735f9e2 176 { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
d66629c1 177 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
2d25f8b4 178 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
94a32d10 179 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
07c0ea87 180 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
b131237c 181 { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
1e56f1eb 182 { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
0b880062 183 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
ebaf5795 184 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
0b880062 185 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
ac71311e 186 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
0a3658cc 187 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
0b880062
AS		 188 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
189 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
eed307e2 190 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
5b77a1f3 191 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
3bb30a7c 192 { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
033efa92 193 { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
fa2f1394 194 { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
d9f51b51 195
e9036e33
CYC		 196 /* Atheros AR5BBU12 with sflash firmware */
197 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
198
85d59726 199 /* Atheros AR5BBU12 with sflash firmware */
bc21fde2 200 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
0b880062 201 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
85d59726 202
cfeb4145 203 /* Broadcom BCM2035 */
7a9d4020 204 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
0b880062
AS		 205 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
206 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145
MH		 207
208 /* Broadcom BCM2045 */
7a9d4020
MH		 209 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
210 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
bdbef3d6 211
cfeb4145 212 /* IBM/Lenovo ThinkPad with Broadcom chip */
7a9d4020
MH		 213 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
214 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145
MH		 215
216 /* HP laptop with Broadcom chip */
7a9d4020 217 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145
MH		 218
219 /* Dell laptop with Broadcom chip */
7a9d4020 220 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145 221
5ddd4a60 222 /* Dell Wireless 370 and 410 devices */
7a9d4020 223 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
5ddd4a60 224 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145 225
7a9d4020
MH		 226 /* Belkin F8T012 and F8T013 devices */
227 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
228 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145 229
5ddd4a60
MH		 230 /* Asus WL-BTD202 device */
231 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
232
233 /* Kensington Bluetooth USB adapter */
234 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
235
cfeb4145
MH		 236 /* RTX Telecom based adapters with buggy SCO support */
237 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
238 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
239
240 /* CONWISE Technology based adapters with buggy SCO support */
241 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
242
4fcef8ed
MH		 243 /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
244 { USB_DEVICE(0x1300, 0x0001), .driver_info = BTUSB_SWAVE },
245
cfeb4145
MH		 246 /* Digianswer devices */
247 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
248 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
249
250 /* CSR BlueCore Bluetooth Sniffer */
4f64fa80
MH		 251 { USB_DEVICE(0x0a12, 0x0002),
252 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
cfeb4145
MH		 253
254 /* Frontline ComProbe Bluetooth Sniffer */
4f64fa80
MH		 255 { USB_DEVICE(0x16d3, 0x0002),
256 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
cfeb4145 257
dffd30ee
THJA		 258 /* Intel Bluetooth device */
259 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
ef4e5e4a 260 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
dffd30ee 261
ae8df494
AK		 262 /* Marvell device */
263 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
264 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
265
5e23b923
MH		 266 { } /* Terminating entry */
267};
268
9bfa35fe
MH		 269#define BTUSB_MAX_ISOC_FRAMES 10
270
5e23b923
MH		 271#define BTUSB_INTR_RUNNING 0
272#define BTUSB_BULK_RUNNING 1
9bfa35fe 273#define BTUSB_ISOC_RUNNING 2
7bee549e 274#define BTUSB_SUSPENDING 3
08b8b6c4 275#define BTUSB_DID_ISO_RESUME 4
5e23b923
MH		 276
277struct btusb_data {
278 struct hci_dev *hdev;
279 struct usb_device *udev;
5fbcd260 280 struct usb_interface *intf;
9bfa35fe 281 struct usb_interface *isoc;
5e23b923 282
5e23b923
MH		 283 unsigned long flags;
284
285 struct work_struct work;
7bee549e 286 struct work_struct waker;
5e23b923 287
803b5836 288 struct usb_anchor deferred;
5e23b923 289 struct usb_anchor tx_anchor;
803b5836
MH		 290 int tx_in_flight;
291 spinlock_t txlock;
292
5e23b923
MH		 293 struct usb_anchor intr_anchor;
294 struct usb_anchor bulk_anchor;
9bfa35fe 295 struct usb_anchor isoc_anchor;
803b5836
MH		 296 spinlock_t rxlock;
297
298 struct sk_buff *evt_skb;
299 struct sk_buff *acl_skb;
300 struct sk_buff *sco_skb;
5e23b923
MH		 301
302 struct usb_endpoint_descriptor *intr_ep;
303 struct usb_endpoint_descriptor *bulk_tx_ep;
304 struct usb_endpoint_descriptor *bulk_rx_ep;
9bfa35fe
MH		 305 struct usb_endpoint_descriptor *isoc_tx_ep;
306 struct usb_endpoint_descriptor *isoc_rx_ep;
307
7a9d4020
MH		 308 __u8 cmdreq_type;
309
43c2e57f 310 unsigned int sco_num;
9bfa35fe 311 int isoc_altsetting;
6a88adf2 312 int suspend_count;
2cbd3f5c 313
97307f51 314 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
2cbd3f5c 315 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
5e23b923
MH		 316};
317
803b5836
MH		 318static inline void btusb_free_frags(struct btusb_data *data)
319{
320 unsigned long flags;
321
322 spin_lock_irqsave(&data->rxlock, flags);
323
324 kfree_skb(data->evt_skb);
325 data->evt_skb = NULL;
326
327 kfree_skb(data->acl_skb);
328 data->acl_skb = NULL;
329
330 kfree_skb(data->sco_skb);
331 data->sco_skb = NULL;
332
333 spin_unlock_irqrestore(&data->rxlock, flags);
334}
335
1ffa4ad0
MH		 336static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
337{
803b5836
MH		 338 struct sk_buff *skb;
339 int err = 0;
340
341 spin_lock(&data->rxlock);
342 skb = data->evt_skb;
343
344 while (count) {
345 int len;
346
347 if (!skb) {
348 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
349 if (!skb) {
350 err = -ENOMEM;
351 break;
352 }
353
354 bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
355 bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
356 }
357
358 len = min_t(uint, bt_cb(skb)->expect, count);
359 memcpy(skb_put(skb, len), buffer, len);
360
361 count -= len;
362 buffer += len;
363 bt_cb(skb)->expect -= len;
364
365 if (skb->len == HCI_EVENT_HDR_SIZE) {
366 /* Complete event header */
367 bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
368
369 if (skb_tailroom(skb) < bt_cb(skb)->expect) {
370 kfree_skb(skb);
371 skb = NULL;
372
373 err = -EILSEQ;
374 break;
375 }
376 }
377
378 if (bt_cb(skb)->expect == 0) {
379 /* Complete frame */
97307f51 380 data->recv_event(data->hdev, skb);
803b5836
MH		 381 skb = NULL;
382 }
383 }
384
385 data->evt_skb = skb;
386 spin_unlock(&data->rxlock);
387
388 return err;
1ffa4ad0
MH		 389}
390
391static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
392{
803b5836
MH		 393 struct sk_buff *skb;
394 int err = 0;
395
396 spin_lock(&data->rxlock);
397 skb = data->acl_skb;
398
399 while (count) {
400 int len;
401
402 if (!skb) {
403 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
404 if (!skb) {
405 err = -ENOMEM;
406 break;
407 }
408
409 bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
410 bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
411 }
412
413 len = min_t(uint, bt_cb(skb)->expect, count);
414 memcpy(skb_put(skb, len), buffer, len);
415
416 count -= len;
417 buffer += len;
418 bt_cb(skb)->expect -= len;
419
420 if (skb->len == HCI_ACL_HDR_SIZE) {
421 __le16 dlen = hci_acl_hdr(skb)->dlen;
422
423 /* Complete ACL header */
424 bt_cb(skb)->expect = __le16_to_cpu(dlen);
425
426 if (skb_tailroom(skb) < bt_cb(skb)->expect) {
427 kfree_skb(skb);
428 skb = NULL;
429
430 err = -EILSEQ;
431 break;
432 }
433 }
434
435 if (bt_cb(skb)->expect == 0) {
436 /* Complete frame */
437 hci_recv_frame(data->hdev, skb);
438 skb = NULL;
439 }
440 }
441
442 data->acl_skb = skb;
443 spin_unlock(&data->rxlock);
444
445 return err;
1ffa4ad0
MH		 446}
447
448static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
449{
803b5836
MH		 450 struct sk_buff *skb;
451 int err = 0;
452
453 spin_lock(&data->rxlock);
454 skb = data->sco_skb;
455
456 while (count) {
457 int len;
458
459 if (!skb) {
460 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
461 if (!skb) {
462 err = -ENOMEM;
463 break;
464 }
465
466 bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
467 bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
468 }
469
470 len = min_t(uint, bt_cb(skb)->expect, count);
471 memcpy(skb_put(skb, len), buffer, len);
472
473 count -= len;
474 buffer += len;
475 bt_cb(skb)->expect -= len;
476
477 if (skb->len == HCI_SCO_HDR_SIZE) {
478 /* Complete SCO header */
479 bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
480
481 if (skb_tailroom(skb) < bt_cb(skb)->expect) {
482 kfree_skb(skb);
483 skb = NULL;
484
485 err = -EILSEQ;
486 break;
487 }
488 }
489
490 if (bt_cb(skb)->expect == 0) {
491 /* Complete frame */
492 hci_recv_frame(data->hdev, skb);
493 skb = NULL;
494 }
495 }
496
497 data->sco_skb = skb;
498 spin_unlock(&data->rxlock);
499
500 return err;
1ffa4ad0
MH		 501}
502
5e23b923
MH		 503static void btusb_intr_complete(struct urb *urb)
504{
505 struct hci_dev *hdev = urb->context;
155961e8 506 struct btusb_data *data = hci_get_drvdata(hdev);
5e23b923
MH		 507 int err;
508
89e7533d
MH		 509 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
510 urb->actual_length);
5e23b923
MH		 511
512 if (!test_bit(HCI_RUNNING, &hdev->flags))
513 return;
514
515 if (urb->status == 0) {
9bfa35fe
MH		 516 hdev->stat.byte_rx += urb->actual_length;
517
1ffa4ad0
MH		 518 if (btusb_recv_intr(data, urb->transfer_buffer,
519 urb->actual_length) < 0) {
5e23b923
MH		 520 BT_ERR("%s corrupted event packet", hdev->name);
521 hdev->stat.err_rx++;
522 }
85560c4a
CC		 523 } else if (urb->status == -ENOENT) {
524 /* Avoid suspend failed when usb_kill_urb */
525 return;
5e23b923
MH		 526 }
527
528 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
529 return;
530
7bee549e 531 usb_mark_last_busy(data->udev);
5e23b923
MH		 532 usb_anchor_urb(urb, &data->intr_anchor);
533
534 err = usb_submit_urb(urb, GFP_ATOMIC);
535 if (err < 0) {
4935f1c1
PB		 536 /* -EPERM: urb is being killed;
537 * -ENODEV: device got disconnected */
538 if (err != -EPERM && err != -ENODEV)
61faddf6 539 BT_ERR("%s urb %p failed to resubmit (%d)",
89e7533d 540 hdev->name, urb, -err);
5e23b923
MH		 541 usb_unanchor_urb(urb);
542 }
543}
544
2eda66f4 545static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
5e23b923 546{
155961e8 547 struct btusb_data *data = hci_get_drvdata(hdev);
5e23b923
MH		 548 struct urb *urb;
549 unsigned char *buf;
550 unsigned int pipe;
551 int err, size;
552
553 BT_DBG("%s", hdev->name);
554
9bfa35fe
MH		 555 if (!data->intr_ep)
556 return -ENODEV;
557
2eda66f4 558 urb = usb_alloc_urb(0, mem_flags);
5e23b923
MH		 559 if (!urb)
560 return -ENOMEM;
561
562 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
563
2eda66f4 564 buf = kmalloc(size, mem_flags);
5e23b923
MH		 565 if (!buf) {
566 usb_free_urb(urb);
567 return -ENOMEM;
568 }
569
570 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
571
572 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
89e7533d 573 btusb_intr_complete, hdev, data->intr_ep->bInterval);
5e23b923
MH		 574
575 urb->transfer_flags |= URB_FREE_BUFFER;
576
577 usb_anchor_urb(urb, &data->intr_anchor);
578
2eda66f4 579 err = usb_submit_urb(urb, mem_flags);
5e23b923 580 if (err < 0) {
d4b8d1c9
PB		 581 if (err != -EPERM && err != -ENODEV)
582 BT_ERR("%s urb %p submission failed (%d)",
89e7533d 583 hdev->name, urb, -err);
5e23b923 584 usb_unanchor_urb(urb);
5e23b923
MH		 585 }
586
587 usb_free_urb(urb);
588
589 return err;
590}
591
592static void btusb_bulk_complete(struct urb *urb)
593{
594 struct hci_dev *hdev = urb->context;
155961e8 595 struct btusb_data *data = hci_get_drvdata(hdev);
5e23b923
MH		 596 int err;
597
89e7533d
MH		 598 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
599 urb->actual_length);
5e23b923
MH		 600
601 if (!test_bit(HCI_RUNNING, &hdev->flags))
602 return;
603
604 if (urb->status == 0) {
9bfa35fe
MH		 605 hdev->stat.byte_rx += urb->actual_length;
606
2cbd3f5c 607 if (data->recv_bulk(data, urb->transfer_buffer,
1ffa4ad0 608 urb->actual_length) < 0) {
5e23b923
MH		 609 BT_ERR("%s corrupted ACL packet", hdev->name);
610 hdev->stat.err_rx++;
611 }
85560c4a
CC		 612 } else if (urb->status == -ENOENT) {
613 /* Avoid suspend failed when usb_kill_urb */
614 return;
5e23b923
MH		 615 }
616
617 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
618 return;
619
620 usb_anchor_urb(urb, &data->bulk_anchor);
652fd781 621 usb_mark_last_busy(data->udev);
5e23b923
MH		 622
623 err = usb_submit_urb(urb, GFP_ATOMIC);
624 if (err < 0) {
4935f1c1
PB		 625 /* -EPERM: urb is being killed;
626 * -ENODEV: device got disconnected */
627 if (err != -EPERM && err != -ENODEV)
61faddf6 628 BT_ERR("%s urb %p failed to resubmit (%d)",
89e7533d 629 hdev->name, urb, -err);
5e23b923
MH		 630 usb_unanchor_urb(urb);
631 }
632}
633
2eda66f4 634static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
5e23b923 635{
155961e8 636 struct btusb_data *data = hci_get_drvdata(hdev);
5e23b923
MH		 637 struct urb *urb;
638 unsigned char *buf;
639 unsigned int pipe;
290ba200 640 int err, size = HCI_MAX_FRAME_SIZE;
5e23b923
MH		 641
642 BT_DBG("%s", hdev->name);
643
9bfa35fe
MH		 644 if (!data->bulk_rx_ep)
645 return -ENODEV;
646
2eda66f4 647 urb = usb_alloc_urb(0, mem_flags);
5e23b923
MH		 648 if (!urb)
649 return -ENOMEM;
650
2eda66f4 651 buf = kmalloc(size, mem_flags);
5e23b923
MH		 652 if (!buf) {
653 usb_free_urb(urb);
654 return -ENOMEM;
655 }
656
657 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
658
89e7533d
MH		 659 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
660 btusb_bulk_complete, hdev);
5e23b923
MH		 661
662 urb->transfer_flags |= URB_FREE_BUFFER;
663
7bee549e 664 usb_mark_last_busy(data->udev);
5e23b923
MH		 665 usb_anchor_urb(urb, &data->bulk_anchor);
666
2eda66f4 667 err = usb_submit_urb(urb, mem_flags);
5e23b923 668 if (err < 0) {
d4b8d1c9
PB		 669 if (err != -EPERM && err != -ENODEV)
670 BT_ERR("%s urb %p submission failed (%d)",
89e7533d 671 hdev->name, urb, -err);
5e23b923 672 usb_unanchor_urb(urb);
5e23b923
MH		 673 }
674
675 usb_free_urb(urb);
676
677 return err;
678}
679
9bfa35fe
MH		 680static void btusb_isoc_complete(struct urb *urb)
681{
682 struct hci_dev *hdev = urb->context;
155961e8 683 struct btusb_data *data = hci_get_drvdata(hdev);
9bfa35fe
MH		 684 int i, err;
685
89e7533d
MH		 686 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
687 urb->actual_length);
9bfa35fe
MH		 688
689 if (!test_bit(HCI_RUNNING, &hdev->flags))
690 return;
691
692 if (urb->status == 0) {
693 for (i = 0; i < urb->number_of_packets; i++) {
694 unsigned int offset = urb->iso_frame_desc[i].offset;
695 unsigned int length = urb->iso_frame_desc[i].actual_length;
696
697 if (urb->iso_frame_desc[i].status)
698 continue;
699
700 hdev->stat.byte_rx += length;
701
1ffa4ad0
MH		 702 if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
703 length) < 0) {
9bfa35fe
MH		 704 BT_ERR("%s corrupted SCO packet", hdev->name);
705 hdev->stat.err_rx++;
706 }
707 }
85560c4a
CC		 708 } else if (urb->status == -ENOENT) {
709 /* Avoid suspend failed when usb_kill_urb */
710 return;
9bfa35fe
MH		 711 }
712
713 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
714 return;
715
716 usb_anchor_urb(urb, &data->isoc_anchor);
717
718 err = usb_submit_urb(urb, GFP_ATOMIC);
719 if (err < 0) {
4935f1c1
PB		 720 /* -EPERM: urb is being killed;
721 * -ENODEV: device got disconnected */
722 if (err != -EPERM && err != -ENODEV)
61faddf6 723 BT_ERR("%s urb %p failed to resubmit (%d)",
89e7533d 724 hdev->name, urb, -err);
9bfa35fe
MH		 725 usb_unanchor_urb(urb);
726 }
727}
728
42b16b3f 729static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
9bfa35fe
MH		 730{
731 int i, offset = 0;
732
733 BT_DBG("len %d mtu %d", len, mtu);
734
735 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
736 i++, offset += mtu, len -= mtu) {
737 urb->iso_frame_desc[i].offset = offset;
738 urb->iso_frame_desc[i].length = mtu;
739 }
740
741 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
742 urb->iso_frame_desc[i].offset = offset;
743 urb->iso_frame_desc[i].length = len;
744 i++;
745 }
746
747 urb->number_of_packets = i;
748}
749
2eda66f4 750static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
9bfa35fe 751{
155961e8 752 struct btusb_data *data = hci_get_drvdata(hdev);
9bfa35fe
MH		 753 struct urb *urb;
754 unsigned char *buf;
755 unsigned int pipe;
756 int err, size;
757
758 BT_DBG("%s", hdev->name);
759
760 if (!data->isoc_rx_ep)
761 return -ENODEV;
762
2eda66f4 763 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
9bfa35fe
MH		 764 if (!urb)
765 return -ENOMEM;
766
767 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
768 BTUSB_MAX_ISOC_FRAMES;
769
2eda66f4 770 buf = kmalloc(size, mem_flags);
9bfa35fe
MH		 771 if (!buf) {
772 usb_free_urb(urb);
773 return -ENOMEM;
774 }
775
776 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
777
fa0fb93f 778 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
89e7533d 779 hdev, data->isoc_rx_ep->bInterval);
9bfa35fe 780
89e7533d 781 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
9bfa35fe
MH		 782
783 __fill_isoc_descriptor(urb, size,
89e7533d 784 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
9bfa35fe
MH		 785
786 usb_anchor_urb(urb, &data->isoc_anchor);
787
2eda66f4 788 err = usb_submit_urb(urb, mem_flags);
9bfa35fe 789 if (err < 0) {
d4b8d1c9
PB		 790 if (err != -EPERM && err != -ENODEV)
791 BT_ERR("%s urb %p submission failed (%d)",
89e7533d 792 hdev->name, urb, -err);
9bfa35fe 793 usb_unanchor_urb(urb);
9bfa35fe
MH		 794 }
795
796 usb_free_urb(urb);
797
798 return err;
799}
800
5e23b923 801static void btusb_tx_complete(struct urb *urb)
7bee549e
ON		 802{
803 struct sk_buff *skb = urb->context;
89e7533d 804 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
155961e8 805 struct btusb_data *data = hci_get_drvdata(hdev);
7bee549e 806
89e7533d
MH		 807 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
808 urb->actual_length);
7bee549e
ON		 809
810 if (!test_bit(HCI_RUNNING, &hdev->flags))
811 goto done;
812
813 if (!urb->status)
814 hdev->stat.byte_tx += urb->transfer_buffer_length;
815 else
816 hdev->stat.err_tx++;
817
818done:
819 spin_lock(&data->txlock);
820 data->tx_in_flight--;
821 spin_unlock(&data->txlock);
822
823 kfree(urb->setup_packet);
824
825 kfree_skb(skb);
826}
827
828static void btusb_isoc_tx_complete(struct urb *urb)
5e23b923
MH		 829{
830 struct sk_buff *skb = urb->context;
89e7533d 831 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
5e23b923 832
89e7533d
MH		 833 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
834 urb->actual_length);
5e23b923
MH		 835
836 if (!test_bit(HCI_RUNNING, &hdev->flags))
837 goto done;
838
839 if (!urb->status)
840 hdev->stat.byte_tx += urb->transfer_buffer_length;
841 else
842 hdev->stat.err_tx++;
843
844done:
845 kfree(urb->setup_packet);
846
847 kfree_skb(skb);
848}
849
850static int btusb_open(struct hci_dev *hdev)
851{
155961e8 852 struct btusb_data *data = hci_get_drvdata(hdev);
5e23b923
MH		 853 int err;
854
855 BT_DBG("%s", hdev->name);
856
7bee549e
ON		 857 err = usb_autopm_get_interface(data->intf);
858 if (err < 0)
859 return err;
860
861 data->intf->needs_remote_wakeup = 1;
862
5e23b923 863 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
7bee549e 864 goto done;
5e23b923
MH		 865
866 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
7bee549e 867 goto done;
5e23b923 868
2eda66f4 869 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
43c2e57f
MH		 870 if (err < 0)
871 goto failed;
872
873 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
5e23b923 874 if (err < 0) {
43c2e57f
MH		 875 usb_kill_anchored_urbs(&data->intr_anchor);
876 goto failed;
5e23b923
MH		 877 }
878
43c2e57f
MH		 879 set_bit(BTUSB_BULK_RUNNING, &data->flags);
880 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
881
7bee549e
ON		 882done:
883 usb_autopm_put_interface(data->intf);
43c2e57f
MH		 884 return 0;
885
886failed:
887 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
888 clear_bit(HCI_RUNNING, &hdev->flags);
7bee549e 889 usb_autopm_put_interface(data->intf);
5e23b923
MH		 890 return err;
891}
892
7bee549e
ON		 893static void btusb_stop_traffic(struct btusb_data *data)
894{
895 usb_kill_anchored_urbs(&data->intr_anchor);
896 usb_kill_anchored_urbs(&data->bulk_anchor);
897 usb_kill_anchored_urbs(&data->isoc_anchor);
898}
899
5e23b923
MH		 900static int btusb_close(struct hci_dev *hdev)
901{
155961e8 902 struct btusb_data *data = hci_get_drvdata(hdev);
7bee549e 903 int err;
5e23b923
MH		 904
905 BT_DBG("%s", hdev->name);
906
907 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
908 return 0;
909
e8c3c3d2 910 cancel_work_sync(&data->work);
404291ac 911 cancel_work_sync(&data->waker);
e8c3c3d2 912
9bfa35fe 913 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
5e23b923 914 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
5e23b923 915 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
7bee549e
ON		 916
917 btusb_stop_traffic(data);
803b5836
MH		 918 btusb_free_frags(data);
919
7bee549e
ON		 920 err = usb_autopm_get_interface(data->intf);
921 if (err < 0)
7b8e2c1d 922 goto failed;
7bee549e
ON		 923
924 data->intf->needs_remote_wakeup = 0;
925 usb_autopm_put_interface(data->intf);
5e23b923 926
7b8e2c1d
ON		 927failed:
928 usb_scuttle_anchored_urbs(&data->deferred);
5e23b923
MH		 929 return 0;
930}
931
932static int btusb_flush(struct hci_dev *hdev)
933{
155961e8 934 struct btusb_data *data = hci_get_drvdata(hdev);
5e23b923
MH		 935
936 BT_DBG("%s", hdev->name);
937
938 usb_kill_anchored_urbs(&data->tx_anchor);
803b5836 939 btusb_free_frags(data);
5e23b923
MH		 940
941 return 0;
942}
943
047b2ec8 944static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
5e23b923 945{
155961e8 946 struct btusb_data *data = hci_get_drvdata(hdev);
5e23b923
MH		 947 struct usb_ctrlrequest *dr;
948 struct urb *urb;
949 unsigned int pipe;
5e23b923 950
047b2ec8
MH		 951 urb = usb_alloc_urb(0, GFP_KERNEL);
952 if (!urb)
953 return ERR_PTR(-ENOMEM);
5e23b923 954
047b2ec8
MH		 955 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
956 if (!dr) {
957 usb_free_urb(urb);
958 return ERR_PTR(-ENOMEM);
959 }
5e23b923 960
047b2ec8
MH		 961 dr->bRequestType = data->cmdreq_type;
962 dr->bRequest = 0;
963 dr->wIndex = 0;
964 dr->wValue = 0;
965 dr->wLength = __cpu_to_le16(skb->len);
7bd8f09f 966
047b2ec8 967 pipe = usb_sndctrlpipe(data->udev, 0x00);
5e23b923 968
89e7533d 969 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
047b2ec8 970 skb->data, skb->len, btusb_tx_complete, skb);
5e23b923 971
89e7533d 972 skb->dev = (void *)hdev;
5e23b923 973
047b2ec8
MH		 974 return urb;
975}
5e23b923 976
047b2ec8
MH		 977static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
978{
979 struct btusb_data *data = hci_get_drvdata(hdev);
980 struct urb *urb;
981 unsigned int pipe;
5e23b923 982
047b2ec8
MH		 983 if (!data->bulk_tx_ep)
984 return ERR_PTR(-ENODEV);
9bfa35fe 985
047b2ec8
MH		 986 urb = usb_alloc_urb(0, GFP_KERNEL);
987 if (!urb)
988 return ERR_PTR(-ENOMEM);
5e23b923 989
047b2ec8 990 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
5e23b923 991
047b2ec8
MH		 992 usb_fill_bulk_urb(urb, data->udev, pipe,
993 skb->data, skb->len, btusb_tx_complete, skb);
5e23b923 994
89e7533d 995 skb->dev = (void *)hdev;
5e23b923 996
047b2ec8
MH		 997 return urb;
998}
9bfa35fe 999
047b2ec8
MH		 1000static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1001{
1002 struct btusb_data *data = hci_get_drvdata(hdev);
1003 struct urb *urb;
1004 unsigned int pipe;
9bfa35fe 1005
047b2ec8
MH		 1006 if (!data->isoc_tx_ep)
1007 return ERR_PTR(-ENODEV);
9bfa35fe 1008
047b2ec8
MH		 1009 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1010 if (!urb)
1011 return ERR_PTR(-ENOMEM);
9bfa35fe 1012
047b2ec8 1013 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
9bfa35fe 1014
047b2ec8
MH		 1015 usb_fill_int_urb(urb, data->udev, pipe,
1016 skb->data, skb->len, btusb_isoc_tx_complete,
1017 skb, data->isoc_tx_ep->bInterval);
9bfa35fe 1018
047b2ec8 1019 urb->transfer_flags = URB_ISO_ASAP;
5e23b923 1020
047b2ec8
MH		 1021 __fill_isoc_descriptor(urb, skb->len,
1022 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
5e23b923 1023
89e7533d 1024 skb->dev = (void *)hdev;
047b2ec8
MH		 1025
1026 return urb;
1027}
1028
1029static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1030{
1031 struct btusb_data *data = hci_get_drvdata(hdev);
1032 int err;
7bee549e 1033
5e23b923
MH		 1034 usb_anchor_urb(urb, &data->tx_anchor);
1035
e9753eff 1036 err = usb_submit_urb(urb, GFP_KERNEL);
5e23b923 1037 if (err < 0) {
5a9b80e2
PB		 1038 if (err != -EPERM && err != -ENODEV)
1039 BT_ERR("%s urb %p submission failed (%d)",
89e7533d 1040 hdev->name, urb, -err);
5e23b923
MH		 1041 kfree(urb->setup_packet);
1042 usb_unanchor_urb(urb);
7bee549e
ON		 1043 } else {
1044 usb_mark_last_busy(data->udev);
5e23b923
MH		 1045 }
1046
54a8a79c 1047 usb_free_urb(urb);
5e23b923
MH		 1048 return err;
1049}
1050
047b2ec8
MH		 1051static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1052{
1053 struct btusb_data *data = hci_get_drvdata(hdev);
1054 unsigned long flags;
1055 bool suspending;
1056
1057 spin_lock_irqsave(&data->txlock, flags);
1058 suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1059 if (!suspending)
1060 data->tx_in_flight++;
1061 spin_unlock_irqrestore(&data->txlock, flags);
1062
1063 if (!suspending)
1064 return submit_tx_urb(hdev, urb);
1065
1066 usb_anchor_urb(urb, &data->deferred);
1067 schedule_work(&data->waker);
1068
1069 usb_free_urb(urb);
1070 return 0;
1071}
1072
1073static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1074{
1075 struct urb *urb;
1076
1077 BT_DBG("%s", hdev->name);
1078
1079 if (!test_bit(HCI_RUNNING, &hdev->flags))
1080 return -EBUSY;
1081
1082 switch (bt_cb(skb)->pkt_type) {
1083 case HCI_COMMAND_PKT:
1084 urb = alloc_ctrl_urb(hdev, skb);
1085 if (IS_ERR(urb))
1086 return PTR_ERR(urb);
1087
1088 hdev->stat.cmd_tx++;
1089 return submit_or_queue_tx_urb(hdev, urb);
1090
1091 case HCI_ACLDATA_PKT:
1092 urb = alloc_bulk_urb(hdev, skb);
1093 if (IS_ERR(urb))
1094 return PTR_ERR(urb);
1095
1096 hdev->stat.acl_tx++;
1097 return submit_or_queue_tx_urb(hdev, urb);
1098
1099 case HCI_SCODATA_PKT:
1100 if (hci_conn_num(hdev, SCO_LINK) < 1)
1101 return -ENODEV;
1102
1103 urb = alloc_isoc_urb(hdev, skb);
1104 if (IS_ERR(urb))
1105 return PTR_ERR(urb);
1106
1107 hdev->stat.sco_tx++;
1108 return submit_tx_urb(hdev, urb);
1109 }
1110
1111 return -EILSEQ;
1112}
1113
5e23b923
MH		 1114static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1115{
155961e8 1116 struct btusb_data *data = hci_get_drvdata(hdev);
5e23b923
MH		 1117
1118 BT_DBG("%s evt %d", hdev->name, evt);
1119
014f7bc7
MH		 1120 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1121 data->sco_num = hci_conn_num(hdev, SCO_LINK);
43c2e57f 1122 schedule_work(&data->work);
a780efa8 1123 }
5e23b923
MH		 1124}
1125
42b16b3f 1126static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
9bfa35fe 1127{
155961e8 1128 struct btusb_data *data = hci_get_drvdata(hdev);
9bfa35fe
MH		 1129 struct usb_interface *intf = data->isoc;
1130 struct usb_endpoint_descriptor *ep_desc;
1131 int i, err;
1132
1133 if (!data->isoc)
1134 return -ENODEV;
1135
1136 err = usb_set_interface(data->udev, 1, altsetting);
1137 if (err < 0) {
1138 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1139 return err;
1140 }
1141
1142 data->isoc_altsetting = altsetting;
1143
1144 data->isoc_tx_ep = NULL;
1145 data->isoc_rx_ep = NULL;
1146
1147 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1148 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1149
1150 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1151 data->isoc_tx_ep = ep_desc;
1152 continue;
1153 }
1154
1155 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1156 data->isoc_rx_ep = ep_desc;
1157 continue;
1158 }
1159 }
1160
1161 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1162 BT_ERR("%s invalid SCO descriptors", hdev->name);
1163 return -ENODEV;
1164 }
1165
1166 return 0;
1167}
1168
5e23b923
MH		 1169static void btusb_work(struct work_struct *work)
1170{
1171 struct btusb_data *data = container_of(work, struct btusb_data, work);
1172 struct hci_dev *hdev = data->hdev;
f4001d28 1173 int new_alts;
7bee549e 1174 int err;
5e23b923 1175
014f7bc7 1176 if (data->sco_num > 0) {
08b8b6c4 1177 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
8efdd0cd 1178 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
7bee549e
ON		 1179 if (err < 0) {
1180 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1181 usb_kill_anchored_urbs(&data->isoc_anchor);
1182 return;
1183 }
1184
08b8b6c4 1185 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
7bee549e 1186 }
f4001d28
MA		 1187
1188 if (hdev->voice_setting & 0x0020) {
1189 static const int alts[3] = { 2, 4, 5 };
89e7533d 1190
014f7bc7 1191 new_alts = alts[data->sco_num - 1];
f4001d28 1192 } else {
014f7bc7 1193 new_alts = data->sco_num;
f4001d28
MA		 1194 }
1195
1196 if (data->isoc_altsetting != new_alts) {
9bfa35fe
MH		 1197 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1198 usb_kill_anchored_urbs(&data->isoc_anchor);
1199
f4001d28 1200 if (__set_isoc_interface(hdev, new_alts) < 0)
9bfa35fe
MH		 1201 return;
1202 }
1203
1204 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2eda66f4 1205 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
9bfa35fe
MH		 1206 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1207 else
2eda66f4 1208 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
9bfa35fe
MH		 1209 }
1210 } else {
1211 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1212 usb_kill_anchored_urbs(&data->isoc_anchor);
1213
1214 __set_isoc_interface(hdev, 0);
08b8b6c4 1215 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
8efdd0cd 1216 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
5e23b923
MH		 1217 }
1218}
1219
7bee549e
ON		 1220static void btusb_waker(struct work_struct *work)
1221{
1222 struct btusb_data *data = container_of(work, struct btusb_data, waker);
1223 int err;
1224
1225 err = usb_autopm_get_interface(data->intf);
1226 if (err < 0)
1227 return;
1228
1229 usb_autopm_put_interface(data->intf);
1230}
1231
9f8f962c
MH		 1232static int btusb_setup_bcm92035(struct hci_dev *hdev)
1233{
1234 struct sk_buff *skb;
1235 u8 val = 0x00;
1236
1237 BT_DBG("%s", hdev->name);
1238
1239 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1240 if (IS_ERR(skb))
1241 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1242 else
1243 kfree_skb(skb);
1244
1245 return 0;
1246}
1247
81cac64b
MH		 1248static int btusb_setup_csr(struct hci_dev *hdev)
1249{
1250 struct hci_rp_read_local_version *rp;
1251 struct sk_buff *skb;
1252 int ret;
1253
1254 BT_DBG("%s", hdev->name);
1255
1256 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1257 HCI_INIT_TIMEOUT);
1258 if (IS_ERR(skb)) {
1259 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
1260 return -PTR_ERR(skb);
1261 }
1262
89e7533d 1263 rp = (struct hci_rp_read_local_version *)skb->data;
81cac64b
MH		 1264
1265 if (!rp->status) {
1266 if (le16_to_cpu(rp->manufacturer) != 10) {
1267 /* Clear the reset quirk since this is not an actual
1268 * early Bluetooth 1.1 device from CSR.
1269 */
1270 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1271
1272 /* These fake CSR controllers have all a broken
1273 * stored link key handling and so just disable it.
1274 */
1275 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1276 &hdev->quirks);
1277 }
1278 }
1279
1280 ret = -bt_to_errno(rp->status);
1281
1282 kfree_skb(skb);
1283
1284 return ret;
1285}
1286
dffd30ee
THJA		 1287struct intel_version {
1288 u8 status;
1289 u8 hw_platform;
1290 u8 hw_variant;
1291 u8 hw_revision;
1292 u8 fw_variant;
1293 u8 fw_revision;
1294 u8 fw_build_num;
1295 u8 fw_build_ww;
1296 u8 fw_build_yy;
1297 u8 fw_patch_num;
1298} __packed;
1299
1300static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
89e7533d 1301 struct intel_version *ver)
dffd30ee
THJA		 1302{
1303 const struct firmware *fw;
1304 char fwname[64];
1305 int ret;
1306
1307 snprintf(fwname, sizeof(fwname),
1308 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1309 ver->hw_platform, ver->hw_variant, ver->hw_revision,
1310 ver->fw_variant, ver->fw_revision, ver->fw_build_num,
1311 ver->fw_build_ww, ver->fw_build_yy);
1312
1313 ret = request_firmware(&fw, fwname, &hdev->dev);
1314 if (ret < 0) {
1315 if (ret == -EINVAL) {
1316 BT_ERR("%s Intel firmware file request failed (%d)",
1317 hdev->name, ret);
1318 return NULL;
1319 }
1320
1321 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1322 hdev->name, fwname, ret);
1323
1324 /* If the correct firmware patch file is not found, use the
1325 * default firmware patch file instead
1326 */
1327 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1328 ver->hw_platform, ver->hw_variant);
1329 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1330 BT_ERR("%s failed to open default Intel fw file: %s",
1331 hdev->name, fwname);
1332 return NULL;
1333 }
1334 }
1335
1336 BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1337
1338 return fw;
1339}
1340
1341static int btusb_setup_intel_patching(struct hci_dev *hdev,
1342 const struct firmware *fw,
1343 const u8 **fw_ptr, int *disable_patch)
1344{
1345 struct sk_buff *skb;
1346 struct hci_command_hdr *cmd;
1347 const u8 *cmd_param;
1348 struct hci_event_hdr *evt = NULL;
1349 const u8 *evt_param = NULL;
1350 int remain = fw->size - (*fw_ptr - fw->data);
1351
1352 /* The first byte indicates the types of the patch command or event.
1353 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1354 * in the current firmware buffer doesn't start with 0x01 or
1355 * the size of remain buffer is smaller than HCI command header,
1356 * the firmware file is corrupted and it should stop the patching
1357 * process.
1358 */
1359 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1360 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1361 return -EINVAL;
1362 }
1363 (*fw_ptr)++;
1364 remain--;
1365
1366 cmd = (struct hci_command_hdr *)(*fw_ptr);
1367 *fw_ptr += sizeof(*cmd);
1368 remain -= sizeof(*cmd);
1369
1370 /* Ensure that the remain firmware data is long enough than the length
1371 * of command parameter. If not, the firmware file is corrupted.
1372 */
1373 if (remain < cmd->plen) {
1374 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1375 return -EFAULT;
1376 }
1377
1378 /* If there is a command that loads a patch in the firmware
1379 * file, then enable the patch upon success, otherwise just
1380 * disable the manufacturer mode, for example patch activation
1381 * is not required when the default firmware patch file is used
1382 * because there are no patch data to load.
1383 */
1384 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1385 *disable_patch = 0;
1386
1387 cmd_param = *fw_ptr;
1388 *fw_ptr += cmd->plen;
1389 remain -= cmd->plen;
1390
1391 /* This reads the expected events when the above command is sent to the
1392 * device. Some vendor commands expects more than one events, for
1393 * example command status event followed by vendor specific event.
1394 * For this case, it only keeps the last expected event. so the command
1395 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1396 * last expected event.
1397 */
1398 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1399 (*fw_ptr)++;
1400 remain--;
1401
1402 evt = (struct hci_event_hdr *)(*fw_ptr);
1403 *fw_ptr += sizeof(*evt);
1404 remain -= sizeof(*evt);
1405
1406 if (remain < evt->plen) {
1407 BT_ERR("%s Intel fw corrupted: invalid evt len",
1408 hdev->name);
1409 return -EFAULT;
1410 }
1411
1412 evt_param = *fw_ptr;
1413 *fw_ptr += evt->plen;
1414 remain -= evt->plen;
1415 }
1416
1417 /* Every HCI commands in the firmware file has its correspond event.
1418 * If event is not found or remain is smaller than zero, the firmware
1419 * file is corrupted.
1420 */
1421 if (!evt || !evt_param || remain < 0) {
1422 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1423 return -EFAULT;
1424 }
1425
1426 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1427 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1428 if (IS_ERR(skb)) {
1429 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1430 hdev->name, cmd->opcode, PTR_ERR(skb));
d9c78e97 1431 return PTR_ERR(skb);
dffd30ee
THJA		 1432 }
1433
1434 /* It ensures that the returned event matches the event data read from
1435 * the firmware file. At fist, it checks the length and then
1436 * the contents of the event.
1437 */
1438 if (skb->len != evt->plen) {
1439 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1440 le16_to_cpu(cmd->opcode));
1441 kfree_skb(skb);
1442 return -EFAULT;
1443 }
1444
1445 if (memcmp(skb->data, evt_param, evt->plen)) {
1446 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1447 hdev->name, le16_to_cpu(cmd->opcode));
1448 kfree_skb(skb);
1449 return -EFAULT;
1450 }
1451 kfree_skb(skb);
1452
1453 return 0;
1454}
1455
40cb0984
MH		 1456#define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})
1457
1458static int btusb_check_bdaddr_intel(struct hci_dev *hdev)
1459{
1460 struct sk_buff *skb;
1461 struct hci_rp_read_bd_addr *rp;
1462
1463 skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1464 HCI_INIT_TIMEOUT);
1465 if (IS_ERR(skb)) {
1466 BT_ERR("%s reading Intel device address failed (%ld)",
1467 hdev->name, PTR_ERR(skb));
1468 return PTR_ERR(skb);
1469 }
1470
1471 if (skb->len != sizeof(*rp)) {
1472 BT_ERR("%s Intel device address length mismatch", hdev->name);
1473 kfree_skb(skb);
1474 return -EIO;
1475 }
1476
89e7533d 1477 rp = (struct hci_rp_read_bd_addr *)skb->data;
40cb0984
MH		 1478 if (rp->status) {
1479 BT_ERR("%s Intel device address result failed (%02x)",
1480 hdev->name, rp->status);
1481 kfree_skb(skb);
1482 return -bt_to_errno(rp->status);
1483 }
1484
1485 /* For some Intel based controllers, the default Bluetooth device
1486 * address 00:03:19:9E:8B:00 can be found. These controllers are
1487 * fully operational, but have the danger of duplicate addresses
1488 * and that in turn can cause problems with Bluetooth operation.
1489 */
4739b5b1 1490 if (!bacmp(&rp->bdaddr, BDADDR_INTEL)) {
40cb0984
MH		 1491 BT_ERR("%s found Intel default device address (%pMR)",
1492 hdev->name, &rp->bdaddr);
4739b5b1
MH		 1493 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1494 }
40cb0984
MH		 1495
1496 kfree_skb(skb);
1497
1498 return 0;
1499}
1500
dffd30ee
THJA		 1501static int btusb_setup_intel(struct hci_dev *hdev)
1502{
1503 struct sk_buff *skb;
1504 const struct firmware *fw;
1505 const u8 *fw_ptr;
1506 int disable_patch;
1507 struct intel_version *ver;
1508
1509 const u8 mfg_enable[] = { 0x01, 0x00 };
1510 const u8 mfg_disable[] = { 0x00, 0x00 };
1511 const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1512 const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1513
1514 BT_DBG("%s", hdev->name);
1515
1516 /* The controller has a bug with the first HCI command sent to it
1517 * returning number of completed commands as zero. This would stall the
1518 * command processing in the Bluetooth core.
1519 *
1520 * As a workaround, send HCI Reset command first which will reset the
1521 * number of completed commands and allow normal command processing
1522 * from now on.
1523 */
1524 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1525 if (IS_ERR(skb)) {
1526 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1527 hdev->name, PTR_ERR(skb));
d9c78e97 1528 return PTR_ERR(skb);
dffd30ee
THJA		 1529 }
1530 kfree_skb(skb);
1531
1532 /* Read Intel specific controller version first to allow selection of
1533 * which firmware file to load.
1534 *
1535 * The returned information are hardware variant and revision plus
1536 * firmware variant, revision and build number.
1537 */
1538 skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1539 if (IS_ERR(skb)) {
1540 BT_ERR("%s reading Intel fw version command failed (%ld)",
1541 hdev->name, PTR_ERR(skb));
d9c78e97 1542 return PTR_ERR(skb);
dffd30ee
THJA		 1543 }
1544
1545 if (skb->len != sizeof(*ver)) {
1546 BT_ERR("%s Intel version event length mismatch", hdev->name);
1547 kfree_skb(skb);
1548 return -EIO;
1549 }
1550
1551 ver = (struct intel_version *)skb->data;
1552 if (ver->status) {
1553 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1554 ver->status);
1555 kfree_skb(skb);
1556 return -bt_to_errno(ver->status);
1557 }
1558
1559 BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1560 hdev->name, ver->hw_platform, ver->hw_variant,
1561 ver->hw_revision, ver->fw_variant, ver->fw_revision,
1562 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1563 ver->fw_patch_num);
1564
1565 /* fw_patch_num indicates the version of patch the device currently
1566 * have. If there is no patch data in the device, it is always 0x00.
1567 * So, if it is other than 0x00, no need to patch the deivce again.
1568 */
1569 if (ver->fw_patch_num) {
1570 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1571 hdev->name, ver->fw_patch_num);
1572 kfree_skb(skb);
40cb0984 1573 btusb_check_bdaddr_intel(hdev);
dffd30ee
THJA		 1574 return 0;
1575 }
1576
1577 /* Opens the firmware patch file based on the firmware version read
1578 * from the controller. If it fails to open the matching firmware
1579 * patch file, it tries to open the default firmware patch file.
1580 * If no patch file is found, allow the device to operate without
1581 * a patch.
1582 */
1583 fw = btusb_setup_intel_get_fw(hdev, ver);
1584 if (!fw) {
1585 kfree_skb(skb);
40cb0984 1586 btusb_check_bdaddr_intel(hdev);
dffd30ee
THJA		 1587 return 0;
1588 }
1589 fw_ptr = fw->data;
1590
1591 /* This Intel specific command enables the manufacturer mode of the
1592 * controller.
1593 *
1594 * Only while this mode is enabled, the driver can download the
1595 * firmware patch data and configuration parameters.
1596 */
1597 skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1598 if (IS_ERR(skb)) {
1599 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1600 hdev->name, PTR_ERR(skb));
1601 release_firmware(fw);
d9c78e97 1602 return PTR_ERR(skb);
dffd30ee
THJA		 1603 }
1604
1605 if (skb->data[0]) {
1606 u8 evt_status = skb->data[0];
89e7533d 1607
dffd30ee
THJA		 1608 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1609 hdev->name, evt_status);
1610 kfree_skb(skb);
1611 release_firmware(fw);
1612 return -bt_to_errno(evt_status);
1613 }
1614 kfree_skb(skb);
1615
1616 disable_patch = 1;
1617
1618 /* The firmware data file consists of list of Intel specific HCI
1619 * commands and its expected events. The first byte indicates the
1620 * type of the message, either HCI command or HCI event.
1621 *
1622 * It reads the command and its expected event from the firmware file,
1623 * and send to the controller. Once __hci_cmd_sync_ev() returns,
1624 * the returned event is compared with the event read from the firmware
1625 * file and it will continue until all the messages are downloaded to
1626 * the controller.
1627 *
1628 * Once the firmware patching is completed successfully,
1629 * the manufacturer mode is disabled with reset and activating the
1630 * downloaded patch.
1631 *
1632 * If the firmware patching fails, the manufacturer mode is
1633 * disabled with reset and deactivating the patch.
1634 *
1635 * If the default patch file is used, no reset is done when disabling
1636 * the manufacturer.
1637 */
1638 while (fw->size > fw_ptr - fw->data) {
1639 int ret;
1640
1641 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1642 &disable_patch);
1643 if (ret < 0)
1644 goto exit_mfg_deactivate;
1645 }
1646
1647 release_firmware(fw);
1648
1649 if (disable_patch)
1650 goto exit_mfg_disable;
1651
1652 /* Patching completed successfully and disable the manufacturer mode
1653 * with reset and activate the downloaded firmware patches.
1654 */
1655 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1656 mfg_reset_activate, HCI_INIT_TIMEOUT);
1657 if (IS_ERR(skb)) {
1658 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1659 hdev->name, PTR_ERR(skb));
d9c78e97 1660 return PTR_ERR(skb);
dffd30ee
THJA		 1661 }
1662 kfree_skb(skb);
1663
1664 BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1665 hdev->name);
1666
40cb0984 1667 btusb_check_bdaddr_intel(hdev);
dffd30ee
THJA		 1668 return 0;
1669
1670exit_mfg_disable:
1671 /* Disable the manufacturer mode without reset */
1672 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1673 HCI_INIT_TIMEOUT);
1674 if (IS_ERR(skb)) {
1675 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1676 hdev->name, PTR_ERR(skb));
d9c78e97 1677 return PTR_ERR(skb);
dffd30ee
THJA		 1678 }
1679 kfree_skb(skb);
1680
1681 BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
40cb0984
MH		 1682
1683 btusb_check_bdaddr_intel(hdev);
dffd30ee
THJA		 1684 return 0;
1685
1686exit_mfg_deactivate:
1687 release_firmware(fw);
1688
1689 /* Patching failed. Disable the manufacturer mode with reset and
1690 * deactivate the downloaded firmware patches.
1691 */
1692 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1693 mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1694 if (IS_ERR(skb)) {
1695 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1696 hdev->name, PTR_ERR(skb));
d9c78e97 1697 return PTR_ERR(skb);
dffd30ee
THJA		 1698 }
1699 kfree_skb(skb);
1700
1701 BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1702 hdev->name);
1703
40cb0984 1704 btusb_check_bdaddr_intel(hdev);
dffd30ee
THJA		 1705 return 0;
1706}
1707
cb8d6597
MH		 1708static int btusb_set_bdaddr_intel(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1709{
1710 struct sk_buff *skb;
1711 long ret;
1712
1713 skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT);
1714 if (IS_ERR(skb)) {
1715 ret = PTR_ERR(skb);
1716 BT_ERR("%s: changing Intel device address failed (%ld)",
89e7533d 1717 hdev->name, ret);
cb8d6597
MH		 1718 return ret;
1719 }
1720 kfree_skb(skb);
1721
1722 return 0;
1723}
1724
ae8df494
AK		 1725static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
1726 const bdaddr_t *bdaddr)
1727{
1728 struct sk_buff *skb;
1729 u8 buf[8];
1730 long ret;
1731
1732 buf[0] = 0xfe;
1733 buf[1] = sizeof(bdaddr_t);
1734 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
1735
1736 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
1737 if (IS_ERR(skb)) {
1738 ret = PTR_ERR(skb);
1739 BT_ERR("%s: changing Marvell device address failed (%ld)",
1740 hdev->name, ret);
1741 return ret;
1742 }
1743 kfree_skb(skb);
1744
1745 return 0;
1746}
1747
c8abb73f
MH		 1748#define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
1749
10d4c673
PG		 1750static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
1751{
1752 struct btusb_data *data = hci_get_drvdata(hdev);
1753 struct usb_device *udev = data->udev;
1754 char fw_name[64];
1755 const struct firmware *fw;
1756 const u8 *fw_ptr;
1757 size_t fw_size;
1758 const struct hci_command_hdr *cmd;
1759 const u8 *cmd_param;
1760 u16 opcode;
1761 struct sk_buff *skb;
1762 struct hci_rp_read_local_version *ver;
c8abb73f 1763 struct hci_rp_read_bd_addr *bda;
10d4c673
PG		 1764 long ret;
1765
1766 snprintf(fw_name, sizeof(fw_name), "brcm/%s-%04x-%04x.hcd",
1767 udev->product ? udev->product : "BCM",
1768 le16_to_cpu(udev->descriptor.idVendor),
1769 le16_to_cpu(udev->descriptor.idProduct));
1770
1771 ret = request_firmware(&fw, fw_name, &hdev->dev);
1772 if (ret < 0) {
c8abb73f 1773 BT_INFO("%s: BCM: patch %s not found", hdev->name, fw_name);
10d4c673
PG		 1774 return 0;
1775 }
1776
1777 /* Reset */
1778 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1779 if (IS_ERR(skb)) {
1780 ret = PTR_ERR(skb);
1781 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1782 goto done;
1783 }
1784 kfree_skb(skb);
1785
1786 /* Read Local Version Info */
1787 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1788 HCI_INIT_TIMEOUT);
1789 if (IS_ERR(skb)) {
1790 ret = PTR_ERR(skb);
1791 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
89e7533d 1792 hdev->name, ret);
10d4c673
PG		 1793 goto done;
1794 }
1795
1796 if (skb->len != sizeof(*ver)) {
1797 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
89e7533d 1798 hdev->name);
10d4c673
PG		 1799 kfree_skb(skb);
1800 ret = -EIO;
1801 goto done;
1802 }
1803
89e7533d 1804 ver = (struct hci_rp_read_local_version *)skb->data;
10d4c673
PG		 1805 BT_INFO("%s: BCM: patching hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1806 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1807 ver->lmp_ver, ver->lmp_subver);
1808 kfree_skb(skb);
1809
1810 /* Start Download */
1811 skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
1812 if (IS_ERR(skb)) {
1813 ret = PTR_ERR(skb);
1814 BT_ERR("%s: BCM: Download Minidrv command failed (%ld)",
89e7533d 1815 hdev->name, ret);
10d4c673
PG		 1816 goto reset_fw;
1817 }
1818 kfree_skb(skb);
1819
1820 /* 50 msec delay after Download Minidrv completes */
1821 msleep(50);
1822
1823 fw_ptr = fw->data;
1824 fw_size = fw->size;
1825
1826 while (fw_size >= sizeof(*cmd)) {
89e7533d 1827 cmd = (struct hci_command_hdr *)fw_ptr;
10d4c673
PG		 1828 fw_ptr += sizeof(*cmd);
1829 fw_size -= sizeof(*cmd);
1830
1831 if (fw_size < cmd->plen) {
1832 BT_ERR("%s: BCM: patch %s is corrupted",
89e7533d 1833 hdev->name, fw_name);
10d4c673
PG		 1834 ret = -EINVAL;
1835 goto reset_fw;
1836 }
1837
1838 cmd_param = fw_ptr;
1839 fw_ptr += cmd->plen;
1840 fw_size -= cmd->plen;
1841
1842 opcode = le16_to_cpu(cmd->opcode);
1843
1844 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
1845 HCI_INIT_TIMEOUT);
1846 if (IS_ERR(skb)) {
1847 ret = PTR_ERR(skb);
1848 BT_ERR("%s: BCM: patch command %04x failed (%ld)",
89e7533d 1849 hdev->name, opcode, ret);
10d4c673
PG		 1850 goto reset_fw;
1851 }
1852 kfree_skb(skb);
1853 }
1854
1855 /* 250 msec delay after Launch Ram completes */
1856 msleep(250);
1857
1858reset_fw:
1859 /* Reset */
1860 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1861 if (IS_ERR(skb)) {
1862 ret = PTR_ERR(skb);
1863 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1864 goto done;
1865 }
1866 kfree_skb(skb);
1867
1868 /* Read Local Version Info */
1869 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1870 HCI_INIT_TIMEOUT);
1871 if (IS_ERR(skb)) {
1872 ret = PTR_ERR(skb);
1873 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
89e7533d 1874 hdev->name, ret);
10d4c673
PG		 1875 goto done;
1876 }
1877
1878 if (skb->len != sizeof(*ver)) {
1879 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
89e7533d 1880 hdev->name);
10d4c673
PG		 1881 kfree_skb(skb);
1882 ret = -EIO;
1883 goto done;
1884 }
1885
89e7533d 1886 ver = (struct hci_rp_read_local_version *)skb->data;
10d4c673
PG		 1887 BT_INFO("%s: BCM: firmware hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1888 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1889 ver->lmp_ver, ver->lmp_subver);
1890 kfree_skb(skb);
1891
c8abb73f
MH		 1892 /* Read BD Address */
1893 skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1894 HCI_INIT_TIMEOUT);
1895 if (IS_ERR(skb)) {
1896 ret = PTR_ERR(skb);
1897 BT_ERR("%s: HCI_OP_READ_BD_ADDR failed (%ld)",
89e7533d 1898 hdev->name, ret);
c8abb73f
MH		 1899 goto done;
1900 }
1901
1902 if (skb->len != sizeof(*bda)) {
1903 BT_ERR("%s: HCI_OP_READ_BD_ADDR event length mismatch",
89e7533d 1904 hdev->name);
c8abb73f
MH		 1905 kfree_skb(skb);
1906 ret = -EIO;
1907 goto done;
1908 }
1909
89e7533d 1910 bda = (struct hci_rp_read_bd_addr *)skb->data;
c8abb73f
MH		 1911 if (bda->status) {
1912 BT_ERR("%s: HCI_OP_READ_BD_ADDR error status (%02x)",
1913 hdev->name, bda->status);
1914 kfree_skb(skb);
1915 ret = -bt_to_errno(bda->status);
1916 goto done;
1917 }
1918
1919 /* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
1920 * with no configured address.
1921 */
849e5086 1922 if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0)) {
c8abb73f
MH		 1923 BT_INFO("%s: BCM: using default device address (%pMR)",
1924 hdev->name, &bda->bdaddr);
849e5086
MH		 1925 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1926 }
c8abb73f
MH		 1927
1928 kfree_skb(skb);
1929
10d4c673
PG		 1930done:
1931 release_firmware(fw);
1932
1933 return ret;
1934}
1935
abbaf50e
MH		 1936static int btusb_set_bdaddr_bcm(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1937{
1938 struct sk_buff *skb;
1939 long ret;
1940
1941 skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
1942 if (IS_ERR(skb)) {
1943 ret = PTR_ERR(skb);
1944 BT_ERR("%s: BCM: Change address command failed (%ld)",
89e7533d 1945 hdev->name, ret);
abbaf50e
MH		 1946 return ret;
1947 }
1948 kfree_skb(skb);
1949
1950 return 0;
1951}
1952
5859223e
TK		 1953static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
1954 const bdaddr_t *bdaddr)
1955{
1956 struct sk_buff *skb;
1957 u8 buf[10];
1958 long ret;
1959
1960 buf[0] = 0x01;
1961 buf[1] = 0x01;
1962 buf[2] = 0x00;
1963 buf[3] = sizeof(bdaddr_t);
1964 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
1965
1966 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
1967 if (IS_ERR(skb)) {
1968 ret = PTR_ERR(skb);
1969 BT_ERR("%s: Change address command failed (%ld)",
1970 hdev->name, ret);
1971 return ret;
1972 }
1973 kfree_skb(skb);
1974
1975 return 0;
1976}
1977
5e23b923 1978static int btusb_probe(struct usb_interface *intf,
89e7533d 1979 const struct usb_device_id *id)
5e23b923
MH		 1980{
1981 struct usb_endpoint_descriptor *ep_desc;
1982 struct btusb_data *data;
1983 struct hci_dev *hdev;
1984 int i, err;
1985
1986 BT_DBG("intf %p id %p", intf, id);
1987
cfeb4145 1988 /* interface numbers are hardcoded in the spec */
5e23b923
MH		 1989 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1990 return -ENODEV;
1991
1992 if (!id->driver_info) {
1993 const struct usb_device_id *match;
89e7533d 1994
5e23b923
MH		 1995 match = usb_match_id(intf, blacklist_table);
1996 if (match)
1997 id = match;
1998 }
1999
cfeb4145
MH		 2000 if (id->driver_info == BTUSB_IGNORE)
2001 return -ENODEV;
2002
2d25f8b4
SL		 2003 if (id->driver_info & BTUSB_ATH3012) {
2004 struct usb_device *udev = interface_to_usbdev(intf);
2005
2006 /* Old firmware would otherwise let ath3k driver load
2007 * patch and sysconfig files */
2008 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2009 return -ENODEV;
2010 }
2011
98921dbd 2012 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
5e23b923
MH		 2013 if (!data)
2014 return -ENOMEM;
2015
2016 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2017 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2018
2019 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2020 data->intr_ep = ep_desc;
2021 continue;
2022 }
2023
2024 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2025 data->bulk_tx_ep = ep_desc;
2026 continue;
2027 }
2028
2029 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2030 data->bulk_rx_ep = ep_desc;
2031 continue;
2032 }
2033 }
2034
98921dbd 2035 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
5e23b923 2036 return -ENODEV;
5e23b923 2037
7a9d4020
MH		 2038 data->cmdreq_type = USB_TYPE_CLASS;
2039
5e23b923 2040 data->udev = interface_to_usbdev(intf);
5fbcd260 2041 data->intf = intf;
5e23b923 2042
5e23b923 2043 INIT_WORK(&data->work, btusb_work);
7bee549e 2044 INIT_WORK(&data->waker, btusb_waker);
803b5836
MH		 2045 init_usb_anchor(&data->deferred);
2046 init_usb_anchor(&data->tx_anchor);
7bee549e 2047 spin_lock_init(&data->txlock);
5e23b923 2048
5e23b923
MH		 2049 init_usb_anchor(&data->intr_anchor);
2050 init_usb_anchor(&data->bulk_anchor);
9bfa35fe 2051 init_usb_anchor(&data->isoc_anchor);
803b5836 2052 spin_lock_init(&data->rxlock);
5e23b923 2053
97307f51 2054 data->recv_event = hci_recv_frame;
2cbd3f5c
MH		 2055 data->recv_bulk = btusb_recv_bulk;
2056
5e23b923 2057 hdev = hci_alloc_dev();
98921dbd 2058 if (!hdev)
5e23b923 2059 return -ENOMEM;
5e23b923 2060
c13854ce 2061 hdev->bus = HCI_USB;
155961e8 2062 hci_set_drvdata(hdev, data);
5e23b923
MH		 2063
2064 data->hdev = hdev;
2065
2066 SET_HCIDEV_DEV(hdev, &intf->dev);
2067
9f8f962c
MH		 2068 hdev->open = btusb_open;
2069 hdev->close = btusb_close;
2070 hdev->flush = btusb_flush;
2071 hdev->send = btusb_send_frame;
2072 hdev->notify = btusb_notify;
2073
2074 if (id->driver_info & BTUSB_BCM92035)
2075 hdev->setup = btusb_setup_bcm92035;
5e23b923 2076
abbaf50e 2077 if (id->driver_info & BTUSB_BCM_PATCHRAM) {
10d4c673 2078 hdev->setup = btusb_setup_bcm_patchram;
abbaf50e 2079 hdev->set_bdaddr = btusb_set_bdaddr_bcm;
27c3fbe0 2080 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
abbaf50e 2081 }
10d4c673 2082
cb8d6597 2083 if (id->driver_info & BTUSB_INTEL) {
dffd30ee 2084 hdev->setup = btusb_setup_intel;
cb8d6597
MH		 2085 hdev->set_bdaddr = btusb_set_bdaddr_intel;
2086 }
dffd30ee 2087
ae8df494
AK		 2088 if (id->driver_info & BTUSB_MARVELL)
2089 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2090
661cf88a
MH		 2091 if (id->driver_info & BTUSB_SWAVE) {
2092 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
d57dbe77 2093 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
661cf88a 2094 }
d57dbe77 2095
40df783d
MH		 2096 if (id->driver_info & BTUSB_INTEL_BOOT)
2097 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2098
5859223e
TK		 2099 if (id->driver_info & BTUSB_ATH3012)
2100 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2101
7a9d4020 2102 /* Interface numbers are hardcoded in the specification */
9bfa35fe
MH		 2103 data->isoc = usb_ifnum_to_if(data->udev, 1);
2104
7a9d4020 2105 if (!reset)
a6c511c6 2106 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
cfeb4145
MH		 2107
2108 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2109 if (!disable_scofix)
2110 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2111 }
2112
9bfa35fe
MH		 2113 if (id->driver_info & BTUSB_BROKEN_ISOC)
2114 data->isoc = NULL;
2115
7a9d4020
MH		 2116 if (id->driver_info & BTUSB_DIGIANSWER) {
2117 data->cmdreq_type = USB_TYPE_VENDOR;
a6c511c6 2118 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
7a9d4020
MH		 2119 }
2120
2121 if (id->driver_info & BTUSB_CSR) {
2122 struct usb_device *udev = data->udev;
81cac64b 2123 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
7a9d4020
MH		 2124
2125 /* Old firmware would otherwise execute USB reset */
81cac64b 2126 if (bcdDevice < 0x117)
a6c511c6 2127 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
81cac64b
MH		 2128
2129 /* Fake CSR devices with broken commands */
2130 if (bcdDevice <= 0x100)
2131 hdev->setup = btusb_setup_csr;
7a9d4020
MH		 2132 }
2133
cfeb4145 2134 if (id->driver_info & BTUSB_SNIFFER) {
9bfa35fe 2135 struct usb_device *udev = data->udev;
cfeb4145 2136
7a9d4020 2137 /* New sniffer firmware has crippled HCI interface */
cfeb4145
MH		 2138 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
2139 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2140 }
2141
3a5ef20c
MH		 2142 if (id->driver_info & BTUSB_INTEL_BOOT) {
2143 /* A bug in the bootloader causes that interrupt interface is
2144 * only enabled after receiving SetInterface(0, AltSetting=0).
2145 */
2146 err = usb_set_interface(data->udev, 0, 0);
2147 if (err < 0) {
2148 BT_ERR("failed to set interface 0, alt 0 %d", err);
2149 hci_free_dev(hdev);
2150 return err;
2151 }
2152 }
2153
9bfa35fe
MH		 2154 if (data->isoc) {
2155 err = usb_driver_claim_interface(&btusb_driver,
89e7533d 2156 data->isoc, data);
9bfa35fe
MH		 2157 if (err < 0) {
2158 hci_free_dev(hdev);
9bfa35fe
MH		 2159 return err;
2160 }
2161 }
2162
5e23b923
MH		 2163 err = hci_register_dev(hdev);
2164 if (err < 0) {
2165 hci_free_dev(hdev);
5e23b923
MH		 2166 return err;
2167 }
2168
2169 usb_set_intfdata(intf, data);
2170
2171 return 0;
2172}
2173
2174static void btusb_disconnect(struct usb_interface *intf)
2175{
2176 struct btusb_data *data = usb_get_intfdata(intf);
2177 struct hci_dev *hdev;
2178
2179 BT_DBG("intf %p", intf);
2180
2181 if (!data)
2182 return;
2183
2184 hdev = data->hdev;
5fbcd260
MH		 2185 usb_set_intfdata(data->intf, NULL);
2186
2187 if (data->isoc)
2188 usb_set_intfdata(data->isoc, NULL);
5e23b923
MH		 2189
2190 hci_unregister_dev(hdev);
2191
5fbcd260
MH		 2192 if (intf == data->isoc)
2193 usb_driver_release_interface(&btusb_driver, data->intf);
2194 else if (data->isoc)
2195 usb_driver_release_interface(&btusb_driver, data->isoc);
2196
803b5836 2197 btusb_free_frags(data);
5e23b923
MH		 2198 hci_free_dev(hdev);
2199}
2200
7bee549e 2201#ifdef CONFIG_PM
6a88adf2
MH		 2202static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
2203{
2204 struct btusb_data *data = usb_get_intfdata(intf);
2205
2206 BT_DBG("intf %p", intf);
2207
2208 if (data->suspend_count++)
2209 return 0;
2210
7bee549e 2211 spin_lock_irq(&data->txlock);
5b1b0b81 2212 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
7bee549e
ON		 2213 set_bit(BTUSB_SUSPENDING, &data->flags);
2214 spin_unlock_irq(&data->txlock);
2215 } else {
2216 spin_unlock_irq(&data->txlock);
2217 data->suspend_count--;
2218 return -EBUSY;
2219 }
2220
6a88adf2
MH		 2221 cancel_work_sync(&data->work);
2222
7bee549e 2223 btusb_stop_traffic(data);
6a88adf2
MH		 2224 usb_kill_anchored_urbs(&data->tx_anchor);
2225
6a88adf2
MH		 2226 return 0;
2227}
2228
7bee549e
ON		 2229static void play_deferred(struct btusb_data *data)
2230{
2231 struct urb *urb;
2232 int err;
2233
2234 while ((urb = usb_get_from_anchor(&data->deferred))) {
2235 err = usb_submit_urb(urb, GFP_ATOMIC);
2236 if (err < 0)
2237 break;
2238
2239 data->tx_in_flight++;
2240 }
2241 usb_scuttle_anchored_urbs(&data->deferred);
2242}
2243
6a88adf2
MH		 2244static int btusb_resume(struct usb_interface *intf)
2245{
2246 struct btusb_data *data = usb_get_intfdata(intf);
2247 struct hci_dev *hdev = data->hdev;
7bee549e 2248 int err = 0;
6a88adf2
MH		 2249
2250 BT_DBG("intf %p", intf);
2251
2252 if (--data->suspend_count)
2253 return 0;
2254
2255 if (!test_bit(HCI_RUNNING, &hdev->flags))
7bee549e 2256 goto done;
6a88adf2
MH		 2257
2258 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
2259 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
2260 if (err < 0) {
2261 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
7bee549e 2262 goto failed;
6a88adf2
MH		 2263 }
2264 }
2265
2266 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
43c2e57f
MH		 2267 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
2268 if (err < 0) {
6a88adf2 2269 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
7bee549e
ON		 2270 goto failed;
2271 }
2272
2273 btusb_submit_bulk_urb(hdev, GFP_NOIO);
6a88adf2
MH		 2274 }
2275
2276 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2277 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
2278 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2279 else
2280 btusb_submit_isoc_urb(hdev, GFP_NOIO);
2281 }
2282
7bee549e
ON		 2283 spin_lock_irq(&data->txlock);
2284 play_deferred(data);
2285 clear_bit(BTUSB_SUSPENDING, &data->flags);
2286 spin_unlock_irq(&data->txlock);
2287 schedule_work(&data->work);
2288
6a88adf2 2289 return 0;
7bee549e
ON		 2290
2291failed:
2292 usb_scuttle_anchored_urbs(&data->deferred);
2293done:
2294 spin_lock_irq(&data->txlock);
2295 clear_bit(BTUSB_SUSPENDING, &data->flags);
2296 spin_unlock_irq(&data->txlock);
2297
2298 return err;
6a88adf2 2299}
7bee549e 2300#endif
6a88adf2 2301
5e23b923
MH		 2302static struct usb_driver btusb_driver = {
2303 .name = "btusb",
2304 .probe = btusb_probe,
2305 .disconnect = btusb_disconnect,
7bee549e 2306#ifdef CONFIG_PM
6a88adf2
MH		 2307 .suspend = btusb_suspend,
2308 .resume = btusb_resume,
7bee549e 2309#endif
5e23b923 2310 .id_table = btusb_table,
7bee549e 2311 .supports_autosuspend = 1,
e1f12eb6 2312 .disable_hub_initiated_lpm = 1,
5e23b923
MH		 2313};
2314
93f1508c 2315module_usb_driver(btusb_driver);
5e23b923 2316
cfeb4145
MH		 2317module_param(disable_scofix, bool, 0644);
2318MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
2319
2320module_param(force_scofix, bool, 0644);
2321MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
2322
2323module_param(reset, bool, 0644);
2324MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
2325
5e23b923
MH		 2326MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
2327MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
2328MODULE_VERSION(VERSION);
2329MODULE_LICENSE("GPL");
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